/* roulang page: index */
:root {
  --bg-deep: #0A111E;
  --bg-panel: #101C2C;
  --bg-elev: #16263A;
  --border-soft: rgba(141, 182, 210, 0.16);
  --border-light: rgba(141, 182, 210, 0.28);
  --text-main: #EAF2F8;
  --text-sub: #9DB0C0;
  --text-dim: #71869A;
  --primary: #1AA6C9;
  --glow: #56E3D6;
  --accent: #F6C24B;
  --danger: #F26A6A;
  --radius: 10px;
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.16);
  --shadow-hover: 0 18px 44px rgba(0, 0, 0, 0.32);
  --sidebar-w: 232px;
  --spacer-y: clamp(4rem, 8vw, 6.5rem);
  --ease: .25s cubic-bezier(.2, .7, .3, 1);
  --font-stack: system-ui, -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  background: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: 0;
  outline: none;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--glow);
  outline-offset: 2px;
}

ul,
ol {
  list-style: none;
}

.container-fluid {
  padding: 0;
}

.content-k {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 32px;
}

.section-hero,
.section-features,
.section-stats,
.section-scene,
.section-path,
.section-news,
.section-faq,
.section-contact {
  padding: var(--spacer-y) 0;
  position: relative;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}

.section-subtitle {
  color: var(--text-sub);
  font-size: 1rem;
  max-width: 660px;
  margin-bottom: 0;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 44px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--glow);
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

.eyebrow::before {
  content: "";
  width: 20px;
  height: 2px;
  background: var(--glow);
  opacity: .85;
}

.text-glow {
  color: var(--glow);
}

.text-primary {
  color: var(--primary) !important;
}

.text-accent {
  color: var(--accent) !important;
}

.bg-panel {
  background: var(--bg-panel);
}

/* ============ Buttons ============ */
.btn-main,
.btn-sub,
.btn-light,
.btn-main:active,
.btn-main:focus,
.btn-sub:hover {
  border: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 8px;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
  transition: all var(--ease);
  white-space: nowrap;
}

.btn-main {
  background: linear-gradient(135deg, #1AA6C9 0%, #56E3D6 100%);
  color: #061016;
  box-shadow: 0 0 18px rgba(86, 227, 214, 0.28);
}

.btn-main:hover {
  color: #061016;
  transform: translateY(-2px);
  box-shadow: 0 0 24px rgba(86, 227, 214, 0.45);
}

.btn-sub {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-light);
}

.btn-sub:hover {
  border-color: var(--glow);
  background: rgba(86, 227, 214, 0.05);
  color: var(--glow);
  transform: translateY(-2px);
}

.btn-warm {
  background: linear-gradient(135deg, #F6C24B, #FFDE78);
  color: #1D1505;
  box-shadow: 0 0 18px rgba(246, 194, 75, 0.25);
}

.btn-warm:hover {
  color: #1D1505;
  transform: translateY(-2px);
  box-shadow: 0 0 26px rgba(246, 194, 75, 0.4);
}

/* ============ Sidebar Layout ============ */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--sidebar-w);
  background: var(--bg-panel);
  border-right: 1px solid var(--border-soft);
  z-index: 1070;
  display: flex;
  flex-direction: column;
  padding: 0 14px 18px;
  transition: transform .35s cubic-bezier(.2, .7, .3, 1), box-shadow var(--ease);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  height: 86px;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 10px;
  padding: 0 6px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 1.25;
}

.brand-icon {
  flex: 0 0 36px;
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: linear-gradient(135deg, rgba(26, 166, 201, .35), rgba(86, 227, 214, .25));
  border: 1px solid rgba(86, 227, 214, .45);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #56E3D6;
  font-size: 18px;
}

.brand-text {
  font-weight: 800;
  font-size: .96rem;
  color: var(--text-main);
  display: block;
}

.side-nav {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 12px;
}

.side-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: 8px;
  font-size: .92rem;
  font-weight: 500;
  color: var(--text-sub);
  transition: all var(--ease);
  position: relative;
}

.side-nav a i {
  width: 18px;
  text-align: center;
  font-size: .86rem;
  color: var(--text-dim);
  transition: color var(--ease);
}

.side-nav a:hover {
  color: var(--text-main);
  background: rgba(86, 227, 214, .06);
}

.side-nav a:hover i {
  color: var(--glow);
}

.side-nav a.active {
  background: linear-gradient(90deg, rgba(26, 166, 201, .14), transparent);
  color: #fff;
  font-weight: 600;
}

.side-nav a.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 3px;
  border-radius: 3px;
  background: var(--glow);
  box-shadow: 0 0 8px rgba(86, 227, 214, .7);
}

.side-nav a.active i {
  color: var(--glow);
}

.sidebar-help {
  padding-top: 14px;
  border-top: 1px solid var(--border-soft);
}

.help-card {
  background: rgba(22, 38, 58, .62);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  padding: 16px 14px;
  backdrop-filter: blur(6px);
}

.help-card p {
  color: var(--text-sub);
  font-size: .82rem;
  margin: 0 0 8px;
}

.help-link {
  font-size: .82rem;
  color: var(--glow);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.help-link:hover {
  color: #fff;
}

/* ============ Mobile topbar ============ */
.mobile-topbar {
  display: none;
}

.sidebar-close {
  display: none;
}

.drawer-overlay {
  display: none;
}

/* ============ Main Area ============ */
.main-area {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  position: relative;
  background: var(--bg-deep);
}

/* ============ Hero ============ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 90px 0 70px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 20%;
  background-repeat: no-repeat;
  opacity: .45;
  z-index: 0;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 17, 30, .8) 0%, rgba(10, 17, 30, .55) 40%, rgba(10, 17, 30, .95) 100%),
    radial-gradient(circle at 76% 40%, rgba(26, 166, 201, .22) 0%, transparent 52%);
}

.hero-grid-bg {
  position: absolute;
  left: -50%;
  right: -50%;
  top: 0;
  bottom: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(141, 182, 210, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(141, 182, 210, .035) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}

.hero .content-k {
  position: relative;
  z-index: 2;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.7fr .9fr;
  gap: 56px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(86, 227, 214, .3);
  background: rgba(86, 227, 214, .06);
  color: var(--glow);
  border-radius: 100px;
  padding: 6px 14px;
  font-size: .8rem;
  letter-spacing: .04em;
  margin-bottom: 22px;
}

.hero h1 {
  font-size: clamp(2.5rem, 4.8vw, 4rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}

.hero h1 .word-secondary {
  color: var(--glow);
  text-shadow: 0 0 32px rgba(86, 227, 214, .28);
}

.hero-desc {
  color: var(--text-sub);
  font-size: clamp(1rem, 1.3vw, 1.14rem);
  line-height: 1.9;
  max-width: 560px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 26px;
}

.hero-tip {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: .84rem;
  color: var(--text-dim);
}

.hero-tip span {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-tip i {
  color: var(--accent);
}

.hero-visual {
  position: relative;
  min-height: 300px;
  border-radius: 10px;
  overflow: hidden;
  background: rgba(17, 32, 52, .55);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(6px);
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 300px;
  opacity: .36;
}

.hero-visual-caption {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  background: rgba(10, 17, 30, .58);
  border: 1px solid rgba(86, 227, 214, .22);
  border-radius: 10px;
  backdrop-filter: blur(10px);
  padding: 14px 16px;
  font-size: .9rem;
  color: var(--text-main);
}

.hero-visual-caption strong {
  color: var(--glow);
  display: block;
  margin-bottom: 4px;
}

.scroll-cue {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  width: 24px;
  height: 40px;
  border: 2px solid rgba(141, 182, 210, .35);
  border-radius: 18px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 8px;
}

.scroll-cue::before {
  content: "";
  width: 3px;
  height: 8px;
  border-radius: 3px;
  background: var(--glow);
  animation: scrollwave 1.6s infinite;
}

@keyframes scrollwave {
  0% {
    transform: translateY(0);
    opacity: 1;
  }
  100% {
    transform: translateY(16px);
    opacity: 0;
  }
}

/* ============ Features ============ */
.section-features {
  background: var(--bg-deep);
}

.features-card {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 30px 28px;
  overflow: hidden;
  height: 100%;
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
  display: flex;
  flex-direction: column;
}

.features-card:hover {
  transform: translateY(-4px);
  border-color: rgba(86, 227, 214, .45);
  box-shadow: var(--shadow-hover);
}

.features-card.wide-card {
  flex-direction: row;
  align-items: center;
  gap: 30px;
}

.features-icon {
  width: 58px;
  height: 58px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--glow);
  background: rgba(86, 227, 214, .1);
  border: 1px solid rgba(86, 227, 214, .2);
  margin-bottom: 22px;
}

.features-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.features-card p {
  color: var(--text-sub);
  font-size: .94rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.features-more {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .86rem;
  color: var(--glow);
  font-weight: 600;
}

.features-more:hover {
  color: #fff;
}

.features-more i {
  transition: transform var(--ease);
}

.features-more:hover i {
  transform: translateX(4px);
}

.features-cover {
  flex: 0 0 170px;
  min-height: 130px;
  border-radius: 8px;
  background-position: center;
  background-size: cover;
  border: 1px solid var(--border-soft);
  position: relative;
}

.features-cover::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(10, 17, 30, .28);
  border-radius: inherit;
}

.features-card-text {
  flex: 1;
}

/* ============ Stats ============ */
.section-stats {
  background: var(--bg-panel);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
}

.stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-left: 1px solid var(--border-soft);
}

.stats-item {
  text-align: center;
  padding: 36px 20px;
  border-right: 1px solid var(--border-soft);
}

.stats-value {
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--text-main);
  line-height: 1.2;
  margin-bottom: 6px;
}

.stats-value em {
  font-style: normal;
  font-size: .62em;
  color: var(--glow);
  margin-left: 2px;
}

.stats-label {
  color: var(--text-sub);
  font-size: .92rem;
}

.stats-desc {
  color: var(--text-dim);
  font-size: .82rem;
  margin-top: 10px;
}

/* ============ Scene / typical use cases ============ */
.scene-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  height: 100%;
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.scene-card:hover {
  transform: translateY(-4px);
  border-color: rgba(86, 227, 214, .42);
  box-shadow: var(--shadow-hover);
}

.scene-media {
  position: relative;
  overflow: hidden;
  flex: 0 0 42%;
  min-height: 220px;
  background: var(--bg-elev);
}

.scene-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}

.scene-media .scene-alt {
  position: absolute;
  inset: 0;
  background: linear-gradient(145deg, rgba(26, 166, 201, .26), rgba(10, 17, 30, .4));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 34px;
  color: rgba(234, 242, 248, .72);
}

.scene-content {
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.scene-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.tag {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border-light);
  color: var(--text-sub);
  font-size: .75rem;
  letter-spacing: .05em;
  border-radius: 100px;
  padding: 4px 12px;
}

.tag.tag-hot {
  color: var(--accent);
  border-color: rgba(246, 194, 75, .4);
}

.tag.tag-new {
  color: var(--glow);
  border-color: rgba(86, 227, 214, .4);
}

.scene-content h3 {
  font-size: 1.28rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 12px;
}

.scene-content p {
  color: var(--text-sub);
  font-size: .94rem;
  line-height: 1.8;
  margin-bottom: 18px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.scene-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: .9rem;
  color: var(--glow);
}

.scene-link i {
  transition: transform var(--ease);
}

.scene-link:hover i {
  transform: translateX(4px);
}

/* ============ Path ============ */
.section-path {
  background: linear-gradient(180deg, var(--bg-deep) 0%, rgba(16, 28, 44, .5) 100%);
}

.path-layout {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 56px;
  align-items: center;
}

.path-step-wrap {
  display: flex;
  flex-direction: column;
}

.path-step {
  display: flex;
  gap: 20px;
  padding: 22px 0;
  position: relative;
}

.path-step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 58px;
  bottom: -8px;
  width: 2px;
  background: linear-gradient(180deg, rgba(86, 227, 214, .35), rgba(26, 166, 201, .06));
}

.path-num {
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  background: rgba(26, 166, 201, .14);
  border: 1px solid rgba(86, 227, 214, .4);
  color: var(--glow);
  position: relative;
  z-index: 2;
}

.path-step-body {
  flex: 1;
  padding-top: 2px;
}

.path-step-body h3 {
  font-size: 1.08rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.path-step-body p {
  color: var(--text-sub);
  font-size: .92rem;
  line-height: 1.75;
}

.path-aside {
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-card);
  position: relative;
}

.path-aside-image {
  border-radius: 8px;
  overflow: hidden;
  height: 160px;
  background-position: center;
  background-size: cover;
  margin-bottom: 20px;
  position: relative;
  border: 1px solid var(--border-soft);
}

.path-aside-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(26, 166, 201, .12), transparent);
}

.path-aside h3 {
  font-size: 1.18rem;
  margin-bottom: 10px;
}

.path-aside ul {
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.path-aside ul li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: var(--text-sub);
  font-size: .92rem;
}

.path-aside ul li i {
  color: var(--accent);
  margin-top: 5px;
  font-size: .8rem;
}

/* ============ News ============ */
.section-news .news-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 10px 24px;
}

.news-empty {
  min-height: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
}

.news-empty-icon {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  border: 1px dashed rgba(141, 182, 210, .4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 14px;
}

.news-row {
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border-soft);
  align-items: center;
  transition: background var(--ease);
}

.news-row:last-child {
  border-bottom: 0;
}

.news-row:hover .news-title {
  color: var(--glow);
}

.news-date {
  color: rgba(234, 242, 248, .8);
  font-variant-numeric: tabular-nums;
  font-size: .9rem;
  border-left: 2px solid rgba(86, 227, 214, .4);
  padding-left: 12px;
}

.news-info {
  min-width: 0;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

.badge-cat {
  display: inline-flex;
  border: 1px solid rgba(86, 227, 214, .35);
  color: var(--glow);
  font-size: .75rem;
  border-radius: 100px;
  padding: 2px 10px;
  line-height: 1.6;
}

.news-title {
  display: block;
  font-weight: 700;
  color: var(--text-main);
  font-size: 1.05rem;
  line-height: 1.5;
  margin-bottom: 4px;
  transition: color var(--ease);
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

.news-summary {
  color: var(--text-sub);
  font-size: .9rem;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
}

.news-row-arrow {
  position: absolute;
  right: 0;
  color: var(--glow);
  opacity: 0;
  transition: opacity var(--ease);
}

.news-row:hover .news-row-arrow {
  opacity: 1;
}

.btn-view-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-sub);
  font-size: .9rem;
  font-weight: 500;
  border: 1px solid var(--border-soft);
  padding: 8px 16px;
  border-radius: 100px;
  transition: all var(--ease);
}

.btn-view-more:hover {
  color: var(--glow);
  border-color: rgba(86, 227, 214, .4);
}

/* ============ FAQ ============ */
.section-faq {
  background: var(--bg-panel);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
}

.accordion {
  background: transparent;
}

.accordion-item {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--border-soft);
  border-radius: 0 !important;
}

.accordion-item:last-child {
  border-bottom: 0;
}

.accordion-header {
  margin: 0;
}

.accordion-button {
  background: transparent;
  color: var(--text-main);
  font-size: 1rem;
  font-weight: 600;
  padding: 20px 12px 20px 0;
  border-radius: 0 !important;
  transition: color var(--ease);
  box-shadow: none;
}

.accordion-button::after {
  background-image: none;
  width: auto;
  height: auto;
  content: "\002B";
  font-weight: 400;
  font-size: 1.5rem;
  color: var(--text-sub);
  transform: rotate(0);
  transition: transform .3s ease;
  display: flex;
  align-items: center;
}

.accordion-button:not(.collapsed) {
  background: transparent;
  color: var(--glow);
  box-shadow: none;
}

.accordion-button:not(.collapsed)::after {
  transform: rotate(45deg);
  color: var(--glow);
}

.accordion-button:focus {
  box-shadow: none;
  border: 0;
}

.accordion-body {
  color: var(--text-sub);
  font-size: .94rem;
  line-height: 1.9;
  padding: 2px 40px 20px 0;
}

/* ============ Contact ============ */
.section-contact {
  background: var(--bg-deep);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr .9fr;
  gap: 48px;
  align-items: center;
}

.contact-aside h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 18px;
}

.contact-aside > p {
  color: var(--text-sub);
  line-height: 1.9;
  margin-bottom: 18px;
}

.contact-list {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.contact-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--text-sub);
  font-size: .94rem;
}

.contact-list i {
  color: var(--glow);
  margin-top: 4px;
}

.contact-form {
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-card);
}

.form-label {
  color: var(--text-sub);
  font-size: .85rem;
  margin-bottom: 8px;
}

.form-control,
.form-select {
  background: #0A1320;
  border: 1px solid rgba(141, 182, 210, .18);
  border-radius: 8px;
  color: var(--text-main);
  padding: 12px 14px;
  font-size: .95rem;
  transition: border-color var(--ease), box-shadow var(--ease);
}

.form-control::placeholder {
  color: #52677A;
}

.form-control:focus,
.form-select:focus {
  background: #0A1320;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(26, 166, 201, .14);
  color: var(--text-main);
}

.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%239DB0C0'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

.form-select option {
  background: var(--bg-panel);
  color: var(--text-main);
}

.form-tip {
  font-size: .8rem;
  color: var(--text-dim);
  margin-top: 4px;
}

.submit-feedback {
  display: none;
  margin-top: 14px;
  border: 1px solid rgba(86, 227, 214, .3);
  background: rgba(86, 227, 214, .08);
  color: var(--glow);
  font-size: .9rem;
  border-radius: 8px;
  padding: 12px 16px;
}

.submit-feedback.show {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ============ Footer ============ */
.site-footer {
  background: var(--bg-panel);
  border-top: 1px solid var(--border-soft);
  padding: 56px 0 0;
}

.footer-layout {
  display: grid;
  grid-template-columns: 1.1fr .6fr .75fr;
  gap: 36px;
  padding-bottom: 32px;
}

.footer-brand-text {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 14px;
}

.footer-brand-text i {
  color: var(--glow);
  margin-right: 6px;
}

.footer-desc {
  color: var(--text-sub);
  font-size: .9rem;
  line-height: 1.8;
  max-width: 340px;
}

.footer-col-title {
  font-size: .95rem;
  color: var(--text-main);
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-links {
  display: grid;
  gap: 10px;
}

.footer-links a {
  color: var(--text-sub);
  font-size: .9rem;
  display: inline-flex;
  gap: 6px;
  align-items: center;
  transition: color var(--ease);
}

.footer-links a:hover {
  color: var(--glow);
}

.footer-contact li {
  display: flex;
  gap: 8px;
  align-items: center;
  color: var(--text-sub);
  font-size: .9rem;
  margin-bottom: 10px;
}

.footer-contact li i {
  color: var(--text-dim);
  width: 16px;
}

.footer-bottom {
  border-top: 1px solid var(--border-soft);
  padding: 18px 0;
}

.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  color: var(--text-dim);
  font-size: .82rem;
}

.footer-bottom a {
  color: var(--text-dim);
}

.footer-bottom a:hover {
  color: var(--glow);
}

/* ============ Responsive ============ */
@media (max-width: 1199.98px) {
  .hero-inner {
    grid-template-columns: 1.3fr .8fr;
  }
}

@media (max-width: 991.98px) {
  .desktop-only {
    display: none !important;
  }

  .mobile-topbar {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    background: rgba(10, 17, 30, .88);
    border-bottom: 1px solid var(--border-soft);
    backdrop-filter: blur(10px);
    z-index: 1090;
  }

  .mobile-brand {
    font-size: .95rem;
    font-weight: 800;
    color: var(--text-main);
    display: inline-flex;
    align-items: center;
    gap: 8px;
  }

  .mobile-brand i {
    color: var(--glow);
  }

  .menu-btn {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: background var(--ease);
  }

  .menu-btn:hover {
    background: rgba(86, 227, 214, .08);
  }

  .menu-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-main);
    border-radius: 2px;
    transition: transform .3s ease, opacity .3s ease;
  }

  .menu-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .menu-btn.active span:nth-child(2) {
    transform: translateY(0) rotate(-45deg);
  }

  .sidebar {
    top: 64px;
    bottom: 0;
    left: 0;
    width: 274px;
    z-index: 1060;
    transform: translateX(-110%);
    border-top: 1px solid var(--border-soft);
    box-shadow: none;
  }

  .sidebar.open {
    transform: translateX(0);
    box-shadow: 16px 0 40px rgba(0, 0, 0, .35);
  }

  .drawer-overlay {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 1050;
    background: rgba(2, 8, 18, .66);
    backdrop-filter: blur(2px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s ease, visibility .3s ease;
  }

  .drawer-overlay.show {
    opacity: 1;
    visibility: visible;
  }

  .main-area {
    margin-left: 0;
    padding-top: 64px;
  }

  .hero {
    min-height: calc(100vh - 64px);
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-visual {
    display: none;
  }

  .section-hero,
  .section-features,
  .section-stats,
  .section-scene,
  .section-path,
  .section-news,
  .section-faq,
  .section-contact {
    padding: 54px 0;
  }

  .path-layout,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .stats-inner {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-layout {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767.98px) {
  .content-k {
    padding: 0 20px;
  }

  .section-hero,
  .section-features,
  .section-stats,
  .section-scene,
  .section-path,
  .section-news,
  .section-faq,
  .section-contact {
    padding: 46px 0;
  }

  .section-head {
    margin-bottom: 30px;
  }

  .hero {
    padding: 70px 0;
    min-height: auto;
  }

  .hero h1 {
    font-size: clamp(2rem, 9vw, 2.8rem);
  }

  .hero-actions .btn-main,
  .hero-actions .btn-sub {
    width: 100%;
  }

  .features-card.wide-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .features-cover {
    width: 100%;
    flex: none;
    min-height: 160px;
  }

  .scene-card {
    flex-direction: column;
  }

  .scene-media {
    flex: none;
    min-height: 180px;
    height: auto;
  }

  .scene-media img {
    position: absolute;
    inset: 0;
  }

  .news-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .news-date {
    border-left: 0;
    border-bottom: 1px solid var(--border-soft);
    padding: 0 0 8px;
  }

  .news-title {
    white-space: normal;
  }

  .footer-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
  }

  .contact-form {
    padding: 22px;
  }
}

@media (max-width: 575.98px) {
  .hero-actions .btn-main,
  .hero-actions .btn-sub {
    width: 100%;
  }

  .stats-inner {
    grid-template-columns: 1fr 1fr;
  }

  .stats-item {
    padding: 22px 10px;
  }

  .stats-label {
    font-size: .84rem;
  }

  .eyebrow,
  .hero-badge {
    font-size: .75rem;
  }

  .features-card {
    padding: 22px 18px;
  }

  .btn-view-more {
    width: 100%;
    justify-content: center;
  }
}

@media (min-width: 992px) {
  .mobile-topbar {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

/* roulang page: article */
:root {
            --bg-page: #0A111E;
            --bg-panel: #101C2C;
            --bg-deep: #0A1320;
            --bg-glass: rgba(17, 32, 52, 0.72);
            --primary: #1AA6C9;
            --accent: #56E3D6;
            --hot: #F6C24B;
            --text-white: #EAF2F8;
            --text-body: #C6D6E4;
            --text-muted: #9DB0C0;
            --text-weak: #71869A;
            --line-soft: rgba(141, 182, 210, 0.16);
            --line-light: rgba(141, 182, 210, 0.32);
            --radius: 10px;
            --radius-sm: 8px;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.16);
            --shadow-hover: 0 18px 40px rgba(0, 0, 0, 0.3);
            --focus-ring: 0 0 0 2px rgba(86, 227, 214, 0.65);
            --sidebar-w: 232px;
            --transition-base: all .25s ease;
            --font-cn: system-ui, -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg-page);
            color: var(--text-body);
            font-family: var(--font-cn);
            font-size: 1rem;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color .2s ease;
        }

        a:hover {
            color: #A6F4EC;
        }

        img,
        svg {
            max-width: 100%;
            vertical-align: middle;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-white);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6,
        p,
        figure,
        blockquote,
        dl,
        dd {
            margin: 0 0 1rem 0;
        }

        .content-k {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: clamp(20px, 4vw, 44px);
            padding-right: clamp(20px, 4vw, 44px);
        }

        /* ------- sidebar base ------- */
        .layout-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-w);
            background: #0B1524;
            border-right: 1px solid var(--line-soft);
            z-index: 1060;
            display: flex;
            flex-direction: column;
            padding: 0 16px 18px;
            overflow-y: auto;
        }

        .brand-lockup {
            display: flex;
            align-items: center;
            gap: 10px;
            height: 76px;
            padding: 0 8px;
            color: var(--text-white);
            border-bottom: 1px solid var(--line-soft);
            margin-bottom: 18px;
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            flex: 0 0 38px;
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #07242C;
            font-size: 18px;
        }

        .brand-text {
            font-size: 15px;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.3;
            letter-spacing: 0.02em;
        }

        .side-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .side-nav a {
            position: relative;
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-muted);
            border: 1px solid transparent;
            border-radius: 9px;
            padding: 10px 14px;
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition-base);
        }

        .side-nav a i {
            width: 20px;
            text-align: center;
            font-size: 15px;
            color: var(--text-weak);
            transition: var(--transition-base);
        }

        .side-nav a:hover {
            color: var(--text-white);
            background: rgba(26, 166, 201, 0.07);
        }

        .side-nav a:hover i {
            color: var(--accent);
        }

        .side-nav a.active {
            color: #fff;
            background: linear-gradient(90deg, rgba(26, 166, 201, 0.15), rgba(26, 166, 201, 0.02));
            border-color: rgba(26, 166, 201, 0.1);
        }

        .side-nav a.active::before {
            content: "";
            width: 3px;
            height: 20px;
            border-radius: 0 3px 3px 0;
            background: var(--accent);
            position: absolute;
            left: -16px;
            top: 50%;
            transform: translateY(-50%);
            box-shadow: 0 0 14px rgba(86, 227, 214, 0.45);
        }

        .side-nav a.active i {
            color: var(--accent);
        }

        .sidebar-tip {
            margin-top: auto;
            margin-bottom: 6px;
            color: var(--text-weak);
            background: rgba(86, 227, 214, 0.05);
            border: 1px solid rgba(86, 227, 214, 0.12);
            border-radius: var(--radius-sm);
            padding: 14px 14px 12px;
            font-size: 0.82rem;
            line-height: 1.7;
        }

        .sidebar-tip i {
            color: var(--accent);
            margin-right: 5px;
        }

        .sidebar-overlay {
            opacity: 0;
            visibility: hidden;
            position: fixed;
            inset: 0;
            background: rgba(3, 10, 20, 0.62);
            z-index: 1050;
            transition: opacity .3s ease, visibility .3s ease;
        }

        .sidebar-overlay.show {
            opacity: 1;
            visibility: visible;
        }

        /* mobile top */
        .mobile-topbar {
            display: none;
        }

        /* main content shell */
        .page-main {
            margin-left: var(--sidebar-w);
            min-height: 100vh;
            background:
                linear-gradient(rgba(20, 40, 60, 0.035) 1px, transparent 1px),
                linear-gradient(90deg, rgba(20, 40, 60, 0.035) 1px, transparent 1px);
            background-size: 56px 56px;
            background-color: var(--bg-page);
        }

        .page-main::before {
            content: "";
            display: block;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), var(--primary), transparent 60%);
            opacity: .8;
        }

        /* article hero */
        .article-hero {
            position: relative;
            padding: clamp(56px, 8vw, 90px) 0 clamp(28px, 5vw, 48px);
            border-bottom: 1px solid var(--line-soft);
            background:
                linear-gradient(180deg, rgba(10, 17, 30, 0.82), rgba(10, 17, 30, 0.94)),
                url('/assets/images/backpic/back-2.png') center top / cover no-repeat;
        }

        .crumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 28px;
            font-size: 13px;
            color: var(--text-weak);
        }

        .crumb a {
            color: var(--text-weak);
            transition: color .2s ease;
        }

        .crumb a:hover {
            color: var(--accent);
        }

        .crumb i {
            color: rgba(141, 182, 210, 0.4);
            font-size: 12px;
        }

        .crumb span {
            color: var(--text-body);
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 360px;
            white-space: nowrap;
        }

        .article-title-wrap h1 {
            font-size: clamp(1.9rem, 3.2vw, 3rem);
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.35;
            margin: 0 0 22px 0;
            max-width: 820px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px 26px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta span i {
            color: var(--primary);
        }

        .article-meta .meta-category {
            color: var(--text-body);
            background: rgba(26, 166, 201, 0.08);
            border: 1px solid rgba(86, 227, 214, 0.16);
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 0.84rem;
        }

        /* prose / article detail */
        .prose-section {
            padding: clamp(40px, 6vw, 64px) 0 30px;
        }

        .prose-inner {
            max-width: 780px;
            margin: 0 auto;
        }

        .article-rich {
            font-size: 1rem;
            line-height: 1.9;
            color: #D3E2EE;
        }

        .article-rich p {
            margin-bottom: 1.6em;
        }

        .article-rich h2 {
            font-size: clamp(1.4rem, 2vw, 1.7rem);
            margin: 1.9em 0 0.8em;
            padding-left: 14px;
            border-left: 3px solid var(--accent);
        }

        .article-rich h3 {
            font-size: 1.3rem;
            margin: 1.7em 0 0.7em;
            color: var(--text-white);
        }

        .article-rich ul,
        .article-rich ol {
            padding-left: 1.5rem;
            margin-bottom: 1.6em;
        }

        .article-rich li {
            margin-bottom: .55em;
        }

        .article-rich blockquote {
            margin: 1.8em 0;
            padding: 18px 22px;
            background: rgba(26, 166, 201, 0.05);
            border-left: 3px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
        }

        .article-rich img {
            border-radius: var(--radius);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
        }

        .article-rich table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 1.8em;
            color: var(--text-body);
        }

        .article-rich th,
        .article-rich td {
            border: 1px solid var(--line-soft);
            padding: 10px 14px;
            text-align: left;
        }

        .article-rich th {
            background: rgba(26, 166, 201, 0.06);
            color: var(--text-white);
            font-weight: 600;
        }

        .article-rich code {
            background: #152235;
            padding: .15rem .4rem;
            border-radius: 6px;
            font-size: .9em;
            color: var(--accent);
        }

        .article-empty {
            border: 1px dashed rgba(141, 182, 210, 0.3);
            background: rgba(16, 28, 44, 0.6);
            border-radius: var(--radius);
            padding: 56px 24px;
            text-align: center;
            color: var(--text-muted);
        }

        .empty-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            border-radius: 50%;
            background: rgba(141, 182, 210, 0.08);
            color: var(--text-weak);
            font-size: 22px;
        }

        .article-empty a {
            color: var(--accent);
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        .article-toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin: 34px 0 10px;
            padding-top: 22px;
            border-top: 1px solid var(--line-soft);
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(26, 166, 201, 0.07);
            border: 1px solid rgba(26, 166, 201, 0.16);
            color: var(--text-muted);
            font-size: 0.82rem;
            border-radius: 30px;
            padding: 5px 14px;
            transition: var(--transition-base);
        }

        .tag-badge i {
            color: var(--primary);
        }

        .tag-badge:hover {
            color: var(--text-white);
            border-color: rgba(86, 227, 214, .32);
        }

        .back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: .92rem;
            transition: var(--transition-base);
        }

        .back-home:hover {
            color: var(--accent);
        }

        /* btn system */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            font-weight: 600;
            line-height: 1.2;
            padding: 13px 22px;
            font-size: 0.95rem;
            transition: var(--transition-base);
            text-align: center;
        }

        .btn-main,
        .btn-main:hover {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #062129;
            border-color: transparent;
            box-shadow: 0 0 18px rgba(86, 227, 214, 0.32);
        }

        .btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 24px rgba(86, 227, 214, 0.5);
            color: #062129;
        }

        .btn-hollow {
            border-color: var(--line-light);
            color: var(--text-white);
            background: transparent;
        }

        .btn-hollow:hover {
            color: var(--accent);
            border-color: rgba(86, 227, 214, 0.55);
            background: rgba(86, 227, 214, 0.05);
        }

        .btn:focus-visible {
            outline: none;
            box-shadow: var(--focus-ring);
        }

        /* related / guide cards */
        .guide-section {
            padding: clamp(20px, 5vw, 50px) 0 clamp(20px, 4vw, 42px);
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px 20px;
            margin-bottom: 28px;
        }

        .section-head h2 {
            font-size: clamp(1.5rem, 2.4vw, 2rem);
            margin-bottom: 0;
        }

        .section-head p {
            color: var(--text-weak);
            font-size: .92rem;
            margin-bottom: 0;
            max-width: 400px;
        }

        .guide-grid {
            display: grid;
            grid-template-columns: 1.15fr 1fr 1fr;
            gap: 18px;
            align-items: stretch;
        }

        .guide-card {
            position: relative;
            min-height: 210px;
            border-radius: var(--radius);
            background: var(--bg-panel);
            background-image: linear-gradient(180deg, rgba(10, 17, 30, 0.2), rgba(10, 17, 30, 0.92)), url('/assets/images/coverpic/cover-1.webp');
            background-size: cover;
            background-position: center;
            border: 1px solid var(--line-soft);
            padding: 22px 24px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            overflow: hidden;
            transition: var(--transition-base);
            box-shadow: var(--shadow);
        }

        .guide-card:nth-child(2) {
            background-image: linear-gradient(180deg, rgba(10, 17, 30, 0.2), rgba(10, 17, 30, 0.92)), url('/assets/images/coverpic/cover-5.png');
        }

        .guide-card:nth-child(3) {
            background-image: linear-gradient(180deg, rgba(10, 17, 30, 0.2), rgba(10, 17, 30, 0.92)), url('/assets/images/coverpic/cover-8.webp');
        }

        .guide-card:hover {
            transform: translateY(-4px);
            border-color: rgba(86, 227, 214, 0.42);
            box-shadow: var(--shadow-hover);
        }

        .guide-card span {
            font-size: 0.8rem;
            color: var(--accent);
            letter-spacing: 0.05em;
            margin-bottom: 10px;
        }

        .guide-card h3 {
            margin-bottom: 8px;
            color: #fff;
            font-size: 1.3rem;
        }

        .guide-card p {
            color: rgba(234, 242, 248, 0.7);
            font-size: .9rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .guide-link {
            margin-top: 16px;
            font-size: .9rem;
            color: var(--text-white);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .guide-link i {
            transition: transform .2s ease;
        }

        .guide-card:hover .guide-link i {
            transform: translateX(4px);
        }

        /* contact CTA */
        .contact-section {
            padding: 10px 0 calc(56px + 1rem);
        }

        .contact-panel {
            background: radial-gradient(circle at right top, rgba(26, 166, 201, 0.10), transparent 44%), var(--bg-panel);
            border: 1px solid var(--line-soft);
            border-radius: 14px;
            padding: clamp(30px, 5vw, 50px);
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            align-items: center;
            justify-content: space-between;
            position: relative;
            overflow: hidden;
        }

        .contact-panel::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 180px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
        }

        .contact-note {
            max-width: 560px;
        }

        .contact-note h2 {
            margin-bottom: 12px;
            font-size: clamp(1.4rem, 2.2vw, 1.8rem);
        }

        .contact-note p {
            margin-bottom: 0;
            color: var(--text-muted);
            font-size: .96rem;
        }

        .contact-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* footer */
        .site-footer {
            border-top: 1px solid var(--line-soft);
            background: #0B1422;
            margin-top: 10px;
        }

        .site-footer .content-k {
            padding-top: clamp(30px, 4vw, 48px);
            padding-bottom: 24px;
        }

        .footer-layout {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 30px;
        }

        .footer-brand-text {
            font-size: 18px;
            font-weight: 800;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
        }

        .footer-brand-text i {
            color: var(--accent);
        }

        .footer-desc {
            color: var(--text-weak);
            font-size: 0.88rem;
            max-width: 420px;
            margin-bottom: 0;
        }

        .footer-col-title {
            margin-bottom: 14px;
            font-size: 0.84rem;
            font-weight: 600;
            color: var(--text-white);
            letter-spacing: 0.06em;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: var(--text-weak);
            font-size: .9rem;
            transition: color .2s ease;
        }

        .footer-links a:hover {
            color: var(--accent);
        }

        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-contact li {
            color: var(--text-weak);
            font-size: .9rem;
        }

        .footer-contact li i {
            color: var(--primary);
            margin-right: 6px;
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(141, 182, 210, 0.12);
            padding: 15px 0 20px;
            background: #080E19;
        }

        .footer-bottom-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 20px;
            align-items: center;
            justify-content: space-between;
            color: var(--text-weak);
            font-size: 0.82rem;
        }

        /* mobile breakpoints */
        @media (min-width: 992px) {
            .sidebar-overlay {
                display: none !important;
            }
        }

        @media (max-width: 991.98px) {
            .layout-sidebar {
                transform: translateX(-104%);
                transition: transform .32s ease;
                width: min(280px, 84vw);
                box-shadow: 16px 0 40px rgba(0, 0, 0, .35);
            }

            .layout-sidebar.open {
                transform: translateX(0);
            }

            .page-main {
                margin-left: 0;
            }

            .mobile-topbar {
                position: sticky;
                top: 0;
                z-index: 1040;
                display: flex;
                align-items: center;
                justify-content: space-between;
                height: 62px;
                padding: 0 20px;
                background: rgba(10, 17, 30, 0.9);
                backdrop-filter: blur(12px);
                border-bottom: 1px solid var(--line-soft);
            }

            .mobile-brand {
                display: inline-flex;
                align-items: center;
                gap: 8px;
                font-weight: 800;
                color: var(--text-white);
                font-size: 16px;
            }

            .mobile-brand i {
                color: var(--accent);
            }

            .mobile-toggle {
                width: 44px;
                height: 44px;
                border: 1px solid var(--line-soft);
                background: rgba(255, 255, 255, 0.03);
                border-radius: 8px;
                color: var(--text-white);
                font-size: 18px;
                display: flex;
                align-items: center;
                justify-content: center;
                transition: var(--transition-base);
            }

            .mobile-toggle:hover {
                color: var(--accent);
                border-color: rgba(86, 227, 214, .32);
            }

            .page-main::before {
                display: none;
            }

            .article-hero {
                padding-top: 46px;
            }
        }

        @media (max-width: 768px) {
            .content-k {
                padding-left: 18px;
                padding-right: 18px;
            }

            .footer-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .article-meta {
                gap: 8px 16px;
            }

            .crumb span {
                max-width: 180px;
            }

            .guide-grid {
                grid-template-columns: 1fr 1fr;
            }

            .guide-card:first-child {
                grid-column: 1 / -1;
                min-height: 230px;
            }

            .contact-panel {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 576px) {
            .article-hero {
                padding-top: 36px;
            }

            .article-title-wrap h1 {
                font-size: 1.55rem;
            }

            .crumb {
                margin-bottom: 18px;
                font-size: 12px;
            }

            .guide-grid {
                grid-template-columns: 1fr;
            }

            .guide-card:first-child {
                grid-column: auto;
            }

            .contact-panel {
                padding: 22px;
            }

            .btn {
                width: 100%;
                padding: 13px 16px;
            }

            .btn-hollow,
            .btn-main {
                width: 100%;
            }

            .contact-actions {
                width: 100%;
                flex-direction: column;
            }
        }

        @media (max-width: 400px) {
            .mobile-topbar {
                padding: 0 12px;
            }

            .content-k {
                padding-left: 14px;
                padding-right: 14px;
            }
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --bg-primary: #0A111E;
            --bg-secondary: #101C2C;
            --bg-glass: rgba(17, 32, 52, 0.72);
            --primary: #1AA6C9;
            --accent: #56E3D6;
            --accent-2: #F6C24B;
            --border: rgba(141, 182, 210, 0.18);
            --border-light: rgba(141, 182, 210, 0.12);
            --text-primary: #EAF2F8;
            --text-secondary: #9DB0C0;
            --text-muted: #71869A;
            --radius: 10px;
            --radius-sm: 8px;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.16);
            --shadow-hover: 0 19px 40px rgba(0, 0, 0, 0.28), 0 0 0 1px rgba(86, 227, 214, 0.08);
            --trans: 0.2s cubic-bezier(0.23, 1, 0.32, 1);
            --sidebar-w: 232px;
            --font: system-ui, -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html{
            scroll-behavior: smooth;
        }
        body {
            background: var(--bg-primary);
            color: var(--text-primary);
            font-family: var(--font);
            font-size: 1rem;
            line-height: 1.8;
            letter-spacing: 0.01em;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--trans);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .content-k {
            width: 100%;
            max-width: 1180px;
            margin: 0 auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        @media(max-width: 768px) {
            .content-k {
                padding-left: 20px;
                padding-right: 20px;
            }
        }

        h1,
        h2,
        h3,
        h4,
        h5 {
            font-family: var(--font);
            letter-spacing: -0.01em;
        }
        h1 {
            font-size: clamp(2.5rem, 4.8vw, 4rem);
            font-weight: 800;
            line-height: 1.15;
        }
        h2 {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            font-weight: 700;
            line-height: 1.3;
        }
        h3 {
            font-size: 1.3rem;
            font-weight: 700;
        }

        /* ===== 侧边导航 ===== */
        .side-nav-wrap {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: var(--sidebar-w);
            z-index: 1030;
            padding: 0;
            display: flex;
            flex-direction: column;
            background: rgba(10, 17, 30, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-right: 1px solid var(--border-light);
        }
        .side-brand {
            height: 72px;
            display: flex;
            align-items: center;
            padding: 14px 20px 14px 22px;
            border-bottom: 1px solid var(--border-light);
            flex-shrink: 0;
        }
        .side-brand-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0A111E;
            font-size: 15px;
            margin-right: 10px;
            flex: 0 0 auto;
            box-shadow: 0 0 20px rgba(86, 227, 214, 0.25);
        }
        .side-brand-text {
            font-weight: 800;
            font-size: 17px;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            letter-spacing: 0.01em;
        }
        .side-nav {
            flex: 1 1 auto;
            display: flex;
            flex-direction: column;
            padding: 18px 12px;
            gap: 2px;
            overflow-y: auto;
        }
        .side-nav a {
            display: flex;
            align-items: center;
            gap: 11px;
            padding: 13px 16px;
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            border-radius: 8px;
            border-left: 2px solid transparent;
            transition: all var(--trans);
            position: relative;
            line-height: 1.2;
        }
        .side-nav a i {
            width: 22px;
            text-align: center;
            font-size: 15px;
            color: var(--text-muted);
            transition: color var(--trans);
        }
        .side-nav a:hover {
            color: #fff;
            background: rgba(141, 182, 210, 0.06);
        }
        .side-nav a:hover i {
            color: var(--accent);
        }
        .side-nav a.active {
            color: #fff;
            background: linear-gradient(90deg, rgba(26, 166, 201, 0.16), rgba(86, 227, 214, 0.04));
            border-left-color: var(--accent);
            font-weight: 600;
        }
        .side-nav a.active i {
            color: var(--accent);
        }
        .side-help-card {
            margin: 14px 14px 20px;
            background: var(--bg-secondary);
            border: 1px solid var(--border-light);
            border-radius: 10px;
            padding: 14px 15px;
            flex-shrink: 0;
        }
        .side-help-title {
            font-size: 13px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 5px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .side-help-title i {
            color: var(--accent-2);
        }
        .side-help-text {
            font-size: 12px;
            line-height: 1.65;
            color: var(--text-muted);
            margin-bottom: 6px;
        }
        .side-help-cta {
            font-size: 12px;
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== 右侧主体 ===== */
        .right-content {
            margin-left: var(--sidebar-w);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background:
                radial-gradient(ellipse 600px 600px at 90% -5%, rgba(26, 166, 201, 0.14), transparent),
                radial-gradient(ellipse 500px 400px at -10% 35%, rgba(86, 227, 214, 0.08), transparent);
        }
        .right-main {
            flex: 1;
        }

        /* ===== 移动端导航 ===== */
        .mobile-navbar {
            display: none;
        }

        /* ===== Hero 区 ===== */
        .category-hero {
            padding: clamp(4rem, 9vw, 6rem) 0 clamp(2.5rem, 6vw, 4rem);
            position: relative;
            border-bottom: 1px solid var(--border-light);
            background:
                linear-gradient(rgba(10, 17, 30, 0.92), rgba(10, 17, 30, 0.86)),
                url('/assets/images/backpic/back-2.png') no-repeat right center / cover;
        }
        .category-hero .content-k {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 20px;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: var(--text-muted);
            opacity: 0.6;
        }
        .hero-tagline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(86, 227, 214, 0.1);
            border: 1px solid rgba(86, 227, 214, 0.25);
            padding: 5px 14px;
            border-radius: 50px;
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 22px;
            letter-spacing: 0.04em;
        }
        .category-hero h1 {
            color: #fff;
            max-width: 760px;
            margin-bottom: 16px;
        }
        .category-hero h1 .txt-glow {
            background: linear-gradient(135deg, #1AA6C9, #56E3D6);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .category-hero .hero-lead {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.9;
            margin-bottom: 12px;
        }
        .hero-feature-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px 28px;
            margin-top: 26px;
        }
        .hero-feature-item {
            color: var(--text-secondary);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-feature-item i {
            color: var(--accent);
            font-size: 13px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 34px;
        }
        .btn-kai {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.02em;
            border: none;
            cursor: pointer;
            transition: all var(--trans);
            text-align: center;
            line-height: 1.4;
        }
        .btn-kai-primary {
            background: linear-gradient(120deg, var(--primary), var(--accent));
            color: #0A111E;
            box-shadow: 0 0 18px rgba(86, 227, 214, 0.30);
            border: 1px solid rgba(86, 227, 214, 0.2);
        }
        .btn-kai-primary:hover {
            background: linear-gradient(120deg, #22c4e2, #6cf4df);
            color: #081018;
            transform: translateY(-2px) scale(1.01);
            box-shadow: 0 4px 28px rgba(86, 227, 214, 0.45);
        }
        .btn-kai-secondary {
            background: rgba(86, 227, 214, 0.04);
            color: var(--text-primary);
            border: 1px solid rgba(141, 182, 210, 0.35);
        }
        .btn-kai-secondary:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 区块通用 ===== */
        .page-section {
            padding: clamp(4rem, 8vw, 6.5rem) 0;
            position: relative;
        }
        .page-section + .page-section {
            border-top: 1px solid var(--border-light);
        }
        .section-eyebrow {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.16em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 10px;
        }
        .section-header-k {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 28px;
            margin-bottom: 42px;
            flex-wrap: wrap;
        }
        .section-title-k {
            max-width: 640px;
        }
        .section-lead-text {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            margin-top: 10px;
            max-width: 580px;
        }

        /* ===== 热门玩法卡片区 ===== */
        .hotplay-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 24px;
            margin: 0;
        }
        .hotplay-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            overflow: hidden;
            transition: transform var(--trans), box-shadow var(--trans), border-color var(--trans);
            position: relative;
        }
        .hotplay-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(86, 227, 214, 0.35);
        }
        .hotplay-card-img {
            aspect-ratio: 16 / 9;
            background: linear-gradient(135deg, rgba(26, 166, 201, 0.15), rgba(86, 227, 214, 0.05)), var(--bg-secondary);
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hotplay-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.9;
        }
        .hotplay-card-img .icon-layer {
            position: absolute;
            font-size: 2.6rem;
            color: var(--accent);
            opacity: 0.5;
        }
        .hotplay-card-content {
            padding: 22px 22px 24px;
        }
        .hotplay-type {
            font-size: 13px;
            display: inline-block;
            padding: 3px 12px;
            border-radius: 40px;
            border: 1px solid rgba(86, 227, 214, 0.35);
            color: var(--accent);
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }
        .hotplay-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            transition: color var(--trans);
        }
        .hotplay-card:hover h3 {
            color: var(--accent);
        }
        .hotplay-card p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .hotplay-feature-item {
            margin-bottom: 4px;
        }
        .feat-list {
            margin-top: 16px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding: 0;
            list-style: none;
        }
        .feat-list li {
            display: flex;
            align-items: flex-start;
            gap: 9px;
            color: var(--text-secondary);
            font-size: 13px;
            line-height: 1.6;
        }
        .feat-list li i {
            color: var(--accent);
            font-size: 12px;
            margin-top: 4px;
            width: 18px;
            text-align: center;
        }

        /* ===== 适用人群 ===== */
        .scenery-intro {
            padding-bottom: 0;
        }
        .audience-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
            margin: 0;
        }
        .audience-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 28px 24px;
            position: relative;
            transition: all var(--trans);
        }
        .audience-card:hover {
            transform: translateY(-4px);
            border-color: rgba(86, 227, 214, 0.3);
            box-shadow: var(--shadow);
        }
        .audience-icon {
            width: 54px;
            height: 54px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent);
            background: rgba(86, 227, 214, 0.08);
            border: 1px solid rgba(86, 227, 214, 0.15);
            margin-bottom: 16px;
        }
        .audience-card h3 {
            font-size: 17px;
            margin-bottom: 10px;
            color: #fff;
        }
        .audience-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
        }

        /* ===== 步骤/流程区 ===== */
        .process-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            padding: clamp(4rem, 7vw, 6rem) 0;
        }
        .process-flow {
            display: grid;
            grid-template-columns: 8fr 6fr;
            gap: 32px;
            align-items: center;
        }
        .process-list {
            list-style: none;
            padding: 0;
            margin: 0;
            position: relative;
        }
        .process-list::before {
            content: '';
            position: absolute;
            left: 21px;
            top: 30px;
            bottom: 30px;
            width: 1px;
            background: linear-gradient(to bottom, rgba(86, 227, 214, 0.6), rgba(86, 227, 214, 0.05));
        }
        .process-item {
            display: flex;
            gap: 22px;
            padding: 12px 0 22px;
            align-items: flex-start;
        }
        .process-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            flex: 0 0 auto;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-primary);
            border: 1px solid rgba(86, 227, 214, 0.4);
            color: var(--accent);
            font-weight: 700;
            font-size: 18px;
            z-index: 2;
            font-variant-numeric: tabular-nums;
        }
        .process-step-content {
            padding-top: 2px;
        }
        .process-step-content h4 {
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 6px;
        }
        .process-step-content p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.75;
            max-width: 420px;
        }
        .process-aside-card {
            background: rgba(10, 17, 30, 0.5);
            border: 1px solid rgba(141, 182, 210, 0.18);
            border-radius: var(--radius);
            padding: 30px;
            position: relative;
        }
        .process-aside-icon {
            font-size: 30px;
            margin-bottom: 15px;
        }
        .process-aside-card h3 {
            font-size: 20px;
            margin-bottom: 16px;
        }
        .process-aside-text {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.85;
            margin-bottom: 20px;
        }
        .btn-link-block {
            display: inline-flex;
            gap: 8px;
            align-items: center;
            color: var(--accent);
            font-weight: 600;
            background: none;
            border: none;
            padding: 0;
            cursor: pointer;
            transition: all var(--trans);
            font-size: 15px;
        }
        .btn-link-block i {
            transition: transform var(--trans);
        }
        .btn-link-block:hover i {
            transform: translateX(4px);
        }

        /* ===== 热门项目分类墙 ===== */
        .title-brand-row {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 18px;
        }
        .project-type-item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            text-align: center;
            padding: 22px 12px 20px;
            transition: all var(--trans);
        }
        .project-type-item:hover {
            transform: translateY(-4px);
            border-color: rgba(246, 194, 75, 0.4);
            box-shadow: var(--shadow);
        }
        .project-type-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            font-size: 19px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            background: rgba(26, 166, 201, 0.1);
            color: var(--primary);
            border: 1px solid rgba(26, 166, 201, 0.16);
        }
        .project-type-name {
            font-weight: 600;
            font-size: 15px;
            color: #fff;
            margin-bottom: 5px;
        }
        .project-type-desc {
            font-size: 12px;
            line-height: 1.5;
            color: var(--text-muted);
        }

        /* ===== 注意事项区 ===== */
        .tips-block {
            border: 1px solid rgba(246, 194, 75, 0.22);
            border-radius: var(--radius);
            background: rgba(246, 194, 75, 0.04);
            padding: 24px 30px;
            display: flex;
            gap: 18px;
            line-height: 1.75;
            flex-wrap: wrap;
        }
        .tips-icon {
            color: var(--accent-2);
            font-size: 26px;
        }
        .tips-content {
            flex: 1;
            min-width: 260px;
        }
        .tips-content strong {
            color: var(--accent-2);
            font-weight: 600;
            margin-bottom: 4px;
            display: inline-block;
        }
        .tips-content ul {
            padding-left: 18px;
            color: var(--text-secondary);
        }

        /* ===== 玩法项目卡片横排 ===== */
        .play-culture-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 18px;
        }
        .culture-card {
            background: var(--bg-secondary);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-light);
            display: flex;
            min-height: 230px;
            transition: all var(--trans);
        }
        .culture-card:hover {
            transform: translateY(-4px);
            border-color: rgba(86, 227, 214, 0.3);
            box-shadow: var(--shadow-hover);
        }
        .culture-card .cover-side {
            flex: 0 0 44%;
            background-position: center !important;
            background-size: cover !important;
            position: relative;
            min-height: 230px;
            padding: 10px;
        }
        .culture-card .content-side {
            padding: 24px 24px;
        }
        .culture-card .cover-side::after {
            content: '';
            position: absolute;
            inset: auto 0 0 0;
            height: 50%;
            background: linear-gradient(to top, rgba(16, 28, 44, 0.2), transparent);
        }

        .cover-icon-layer {
            position: absolute;
            bottom: 0;
            right: 0;
            left: 0;
            display: flex;
            align-items: center;
            justify-content: flex-start;
            padding: 12px 18px;
        }
        .tag-kai {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 11px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 3px 10px;
            border-radius: 30px;
            color: rgba(255,255,255,.9);
            background: rgba(10,17,30,.25);
            letter-spacing: .06em;
        }
        .culture-tag {
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            text-transform: uppercase;
            letter-spacing: .12em;
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 6px;
        }
        .culture-tag i {
            color: var(--accent-2);
        }
        .content-side h3 {
            color: #fff;
            margin-bottom: 10px;
        }
        .content-side p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== FAQ 区 ===== */
        .faq-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-light);
        }
        .faq-list-k {
            max-width: 780px;
            margin: 0 auto;
        }
        .accordion-item-k {
            border: none;
            border-bottom: 1px solid var(--border-light);
            background: transparent;
            border-radius: 0;
        }
        .accordion-item-k:last-of-type {
            border-bottom: 1px solid var(--border-light);
        }
        .accordion-button-k {
            width: 100%;
            background: transparent;
            border: none;
            text-align: left;
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 500;
            line-height: 1.55;
            padding: 22px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            cursor: pointer;
            transition: all var(--trans);
        }
        .accordion-button-k:hover {
            color: var(--accent);
        }
        .accordion-button-k .ac-icon {
            flex: 0 0 auto;
            width: 26px;
            height: 26px;
            border: 1px solid var(--border);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-secondary);
            transition: all 0.35s ease;
        }
        .accordion-button-k.open .ac-icon {
            transform: rotate(45deg);
            border-color: var(--accent);
            color: var(--accent);
        }
        .accordion-panel-k {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s ease;
        }
        .accordion-body-k {
            padding: 0 40px 24px 0;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.85;
        }

        /* ===== CTA 区 ===== */
        .cta-box {
            background: linear-gradient(120deg, rgba(26, 166, 201, 0.12), rgba(86, 227, 214, 0.04)), var(--bg-secondary);
            border: 1px solid rgba(86, 227, 214, 0.25);
            border-radius: 14px;
            padding: clamp(2.4rem, 6vw, 4rem) clamp(1.6rem, 4vw, 3rem);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            box-shadow: var(--shadow);
        }
        .cta-text h2 {
            font-size: clamp(1.5rem, 2.4vw, 2rem);
            color: #fff;
            margin-bottom: 10px;
        }
        .cta-text p {
            color: var(--text-secondary);
            font-size: 16px;
            margin: 0;
            max-width: 500px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #070D17;
            border-top: 1px solid var(--border-light);
            padding: 60px 0 0;
            margin-left: var(--sidebar-w);
        }
        .site-footer.without-sidebar{
            margin-left: 0;
        }
        .footer-layout {
            display: grid;
            grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1.2fr);
            gap: 42px;
            padding-bottom: 32px;
        }
        .footer-brand-text {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-brand-text i {
            color: var(--accent);
            font-size: 19px;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 380px;
            margin-top: 6px;

        }
        .footer-col-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex-wrap: wrap;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-contact {
            font-size: 14px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-contact i {
            margin-right: 5px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding: 20px 0;
        }
        .footer-bottom-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px 24px;
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== 移动端抽屉 ===== */
        .offcanvas-kai {
            display: none;
        }
        .offcanvas-overlay {
            display: none;
        }

        @media (max-width: 991.98px) {
            :root {
                --sidebar-w: 0px;
            }
            .side-nav-wrap {
                display: none;
            }
            .site-footer {
                margin-left: 0;
            }
            .right-content {
                margin-left: 0;
                padding-top: 56px;
            }
            .mobile-navbar {
                display: flex;
                align-items: center;
                justify-content: space-between;
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                height: 64px;
                z-index: 1040;
                background: rgba(10, 17, 30, 0.88);
                backdrop-filter: blur(14px);
                -webkit-backdrop-filter: blur(14px);
                padding: 0 20px;
                border-bottom: 1px solid var(--border-light);
            }
            .mobile-brand-text {
                display: flex;
                align-items: center;
                gap: 4px;
                font-size: 16px;
                font-weight: 700;
                color: var(--text-primary);
            }
            .mobile-menu-btn {
                width: 44px;
                height: 44px;
                display: flex;
                align-items: center;
                justify-content: center;
                background: none;
                border: 1px solid var(--border-light);
                border-radius: 8px;
                color: var(--text-primary);
                cursor: pointer;
                font-size: 18px;
            }
            .offcanvas-kai {
                display: flex;
                flex-direction: column;
                position: fixed;
                top: 0;
                left: 0;
                bottom: 0;
                width: 282px;
                background: rgba(10, 17, 30, 0.92);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                z-index: 1060;
                transform: translateX(-100%);
                transition: transform 0.3s ease;
                overflow-y: auto;
                border-right: 1px solid var(--border-light);
            }
            .offcanvas-kai.show {
                transform: translateX(0);
            }
            .offcanvas-head {
                height: 64px;
                display: flex;
                align-items: center;
                padding: 0 18px;
                justify-content: space-between;
                border-bottom: 1px solid var(--border-light);
                flex-shrink: 0;
            }
            .offcanvas-nav {
                padding: 20px 12px;
                display: flex;
                flex-direction: column;
                gap: 2px;
            }
            .offcanvas-nav a {
                display: flex;
                align-items: center;
                gap: 12px;
                padding: 14px 16px;
                color: var(--text-secondary);
                font-size: 15px;
                font-weight: 500;
                border-radius: 8px;
                border-left: 2px solid transparent;
                background: transparent;
            }
            .offcanvas-nav a i {
                width: 20px;
                text-align: center;
                color: var(--text-muted);
            }
            .offcanvas-nav a.active {
                color: #fff;
                background: linear-gradient(90deg, rgba(26,166,201,.16), rgba(86,227,214,.05));
                border-left-color: var(--accent);
                font-weight: 600;
            }
            .offcanvas-nav a.active i {
                color: var(--accent);
            }
            .offcanvas-close {
                background: none;
                border: none;
                width: 34px;
                height: 34px;
                color: var(--text-secondary);
                font-size: 18px;
            }
            .offcanvas-overlay {
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.58);
                z-index: 1050;
            }
            .offcanvas-overlay.on {
                display: block;
            }
            .body-lock {
                overflow: hidden;
            }
        }

        @media (max-width: 1024px) {
            .hotplay-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hotplay-card:first-child {
                grid-column: 1 / -1;
            }
            .audience-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .title-brand-row {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 768px) {
            .category-hero h1 {
                font-size: 2.1rem;
            }
            .content-k {
                padding-left: 16px;
                padding-right: 16px;
            }
            .footer-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
            .section-header-k {
                flex-direction: column;
                gap: 14px;
                margin-bottom: 28px;
            }
            .hero-feature-row {
                gap: 10px 18px;
            }
            .process-flow {
                grid-template-columns: 1fr;
            }
            .play-culture-row {
                grid-template-columns: 1fr;
            }
            .hotplay-grid {
                gap: 18px;
            }
            .page-section {
                padding: 3rem 0;
            }
            .culture-card .cover-side {
                min-height: 180px;
            }
            .accordion-body-k {
                padding-right: 20px;
            }
            .cta-box {
                align-items: center;
                text-align: center;
                justify-content: center;
                flex-direction: column;
            }
            .cta-text p {
                max-width: 100%;
            }
            .btn-kai-primary, .btn-kai-secondary {
                width: 100%;
                max-width: 360px;
            }
            .hero-actions {
                justify-content: center;
            }
            .category-hero {
                text-align: center;
            }
            .category-hero .hero-lead {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-feature-row {
                justify-content: center;
            }
            .breadcrumb {
                justify-content: flex-start;
            }
            .category-hero h1 .txt-glow {
                display: block;
                margin-top: 6px;
            }
        }

        @media (max-width: 576px) {
            .hotplay-grid {
                grid-template-columns: 1fr;
            }
            .hotplay-card:first-child {
                grid-column: auto;
            }
            .audience-grid {
                grid-template-columns: 1fr;
            }
            .title-brand-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .project-type-item {
                padding: 16px 10px 14px;
            }
            .category-hero .hero-actions .btn-kai {
                width: 100%;
                padding: 14px 18px;
            }
            .process-item {
                gap: 14px;
            }
            .process-num {
                width: 36px;
                height: 36px;
                font-size: 16px;
                margin-top: 8px;
            }
        }

        /* ===== 适配底部 ===== */
        .page-section + .faq-section,
        .page-section:last-child {
            border-top: 0;
        }

/* roulang page: category2 */
:root {
      --page-bg: #0A111E;
      --panel-bg: #101C2C;
      --glass-bg: rgba(17, 32, 52, 0.72);
      --primary: #1AA6C9;
      --glow: #56E3D6;
      --hot: #F6C24B;
      --line: rgba(141, 182, 210, 0.18);
      --text: #EAF2F8;
      --muted: #9DB0C0;
      --dim: #71869A;
      --radius: 10px;
      --shadow: 0 10px 30px rgba(0, 0, 0, 0.16);
      --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.28);
      --content-w: 1180px;
      --side-w: 232px;
      --font: system-ui, -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
      --transition: 0.25s ease;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: var(--font);
      background: var(--page-bg);
      color: var(--text);
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
    }

    body.no-scroll {
      overflow: hidden;
    }

    * {
      box-sizing: border-box;
    }

    a {
      color: var(--text);
      text-decoration: none;
      transition: color var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
    }

    a:hover {
      color: #ffffff;
    }

    img {
      max-width: 100%;
      display: block;
    }

    h1, h2, h3, h4, h5, h6 {
      color: #ffffff;
      font-weight: 700;
      line-height: 1.35;
    }

    h1, h2, h3, h4, h5, h6, p, ul, ol, figure {
      margin-top: 0;
    }

    button, input, select, textarea {
      font-family: inherit;
      font-size: inherit;
    }

    .content-k {
      width: min(var(--content-w), calc(100% - 48px));
      margin: 0 auto;
    }

    section {
      padding: clamp(3.5rem, 7vw, 5.5rem) 0;
      position: relative;
    }

    .main-wrap {
      min-height: 100vh;
      background: var(--page-bg);
    }

    /* Background grid */
    .section-bg-grid::before {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      background-image:
        linear-gradient(rgba(141, 182, 210, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(141, 182, 210, 0.05) 1px, transparent 1px);
      background-size: 44px 44px;
    }

    /* ===== Side Navigation ===== */
    .app-side {
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      width: var(--side-w);
      background: #0E1828;
      border-right: 1px solid var(--line);
      z-index: 1050;
      overflow: hidden;
      transition: transform 0.3s ease;
    }

    .side-inner {
      display: flex;
      flex-direction: column;
      height: 100%;
      padding: 18px 16px 20px;
      overflow-y: auto;
    }

    .brand-main {
      display: flex;
      align-items: center;
      gap: 10px;
      min-height: 64px;
      padding: 8px 10px;
      border-bottom: 1px solid var(--line);
      margin-bottom: 18px;
      flex-shrink: 0;
    }

    .brand-mark {
      width: 36px;
      height: 36px;
      flex: 0 0 36px;
      border-radius: 9px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(140deg, rgba(26, 166, 201, 0.28), rgba(86, 227, 214, 0.08));
      color: var(--glow);
      border: 1px solid rgba(86, 227, 214, 0.35);
      font-size: 16px;
    }

    .brand-text {
      font-size: 0.875rem;
      font-weight: 700;
      line-height: 1.4;
      letter-spacing: 0.02em;
      color: #fff;
      display: inline-block;
    }

    .brand-text small {
      color: var(--dim);
      font-weight: 400;
    }

    .side-nav {
      display: flex;
      flex-direction: column;
      gap: 3px;
    }

    .side-nav a {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 11px 12px;
      border-radius: 8px;
      color: var(--muted);
      font-size: 0.95rem;
      line-height: 1.4;
      border-left: 2px solid transparent;
      position: relative;
      background: transparent;
      font-weight: 500;
    }

    .side-nav a i {
      width: 20px;
      text-align: center;
      color: var(--dim);
      transition: color var(--transition);
    }

    .side-nav a:hover {
      color: #fff;
      background: rgba(26, 166, 201, 0.1);
    }

    .side-nav a:hover i {
      color: var(--primary);
    }

    .side-nav a.active {
      color: #ffffff;
      background: linear-gradient(90deg, rgba(26, 166, 201, 0.18), transparent);
      border-left-color: var(--glow);
    }

    .side-nav a.active i {
      color: var(--glow);
    }

    .side-nav a.active::after {
      content: "";
      position: absolute;
      right: 14px;
      top: 50%;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--glow);
      transform: translateY(-50%);
      box-shadow: 0 0 10px rgba(86, 227, 214, 0.75);
    }

    .side-help {
      margin-top: auto;
      background: rgba(16, 28, 44, 0.75);
      border: 1px solid var(--line);
      border-radius: 10px;
      padding: 16px 14px;
      margin-top: 24px;
    }

    .side-help h3 {
      font-size: 0.9rem;
      font-weight: 700;
      color: #ffffff;
      margin: 0 0 4px;
    }

    .side-help p {
      color: var(--muted);
      font-size: 0.8rem;
      line-height: 1.6;
      margin: 4px 0 10px;
    }

    .side-help a {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      color: var(--glow);
      font-size: 0.85rem;
      font-weight: 500;
    }

    .side-help a:hover {
      color: #fff;
    }

    /* ===== Mobile Topbar ===== */
    .mobile-topbar {
      display: none;
      align-items: center;
      justify-content: space-between;
      height: 66px;
      padding: 0 20px;
      background: rgba(10, 17, 30, 0.96);
      border-bottom: 1px solid var(--line);
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1040;
      backdrop-filter: blur(14px);
    }

    .mobile-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #fff;
      font-weight: 700;
      font-size: 0.9rem;
      letter-spacing: 0.01em;
    }

    .mobile-brand i {
      color: var(--glow);
      font-size: 18px;
    }

    .nav-toggle {
      width: 44px;
      height: 44px;
      border: 1px solid var(--line);
      background: rgba(16, 28, 44, 0.4);
      border-radius: 9px;
      cursor: pointer;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
      transition: all 0.25s ease;
    }

    .nav-toggle:hover {
      border-color: rgba(86, 227, 214, 0.6);
    }

    .nav-toggle span {
      display: block;
      width: 18px;
      height: 1.6px;
      background: var(--glow);
      border-radius: 2px;
    }

    .side-overlay {
      display: none;
    }

    /* ===== Footer ===== */
    .site-footer {
      border-top: 1px solid var(--line);
      background: #0D1524;
      padding: 0 0 28px;
      color: var(--muted);
      position: relative;
      clear: both;
    }

    .site-footer .footer-layout {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr;
      gap: 28px;
      padding: 52px 0 30px;
    }

    .site-footer .footer-brand-text {
      font-size: 1.25rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 9px;
    }

    .site-footer .footer-brand-text i {
      color: var(--glow);
      font-size: 20px;
    }

    .footer-desc {
      color: var(--muted);
      font-size: 0.89rem;
      line-height: 1.9;
      margin-bottom: 0;
      max-width: 42ch;
    }

    .footer-col-title {
      font-weight: 700;
      color: #fff;
      margin-bottom: 15px;
      font-size: 0.95rem;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 9px;
      font-size: 0.88rem;
    }

    .footer-links a {
      color: var(--muted);
      display: inline-flex;
      gap: 8px;
      align-items: center;
    }

    .footer-links a::before {
      content: "";
      width: 4px;
      height: 4px;
      border-radius: 50%;
      background: var(--primary);
    }

    .footer-links a:hover {
      color: var(--glow);
    }

    .footer-contact {
      list-style: none;
      padding: 0;
      margin: 0;
      font-size: 0.86rem;
      color: var(--muted);
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .footer-contact li {
      display: flex;
      gap: 8px;
    }

    .footer-contact i {
      color: var(--primary);
      margin-top: 5px;
    }

    .footer-bottom {
      border-top: 1px solid var(--line);
      padding: 20px 0 2px;
      color: var(--dim);
      font-size: 0.78rem;
    }

    .footer-bottom-inner {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
    }

    /* ===== Hero / Category Hero ===== */
    .cat-hero {
      min-height: 80vh;
      display: flex;
      align-items: center;
      padding: clamp(3rem, 8vw, 6rem) 0;
      position: relative;
      overflow: hidden;
      background:
        radial-gradient(circle at 78% 30%, rgba(26, 166, 201, 0.2), transparent 26%),
        radial-gradient(circle at 10% 75%, rgba(86, 227, 214, 0.08), transparent 20%),
        var(--page-bg);
    }

    .cat-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(141, 182, 210, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(141, 182, 210, 0.05) 1px, transparent 1px);
      background-size: 48px 48px;
      pointer-events: none;
    }

    .hero-bg {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.24;
    }

    .hero-bg::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(100deg, rgba(10, 17, 30, 0.92) 20%, rgba(10, 17, 30, 0.52) 60%, rgba(10, 17, 30, 0.85) 100%);
    }

    .cat-hero__inner {
      position: relative;
      z-index: 3;
      display: grid;
      grid-template-columns: minmax(0, 1.18fr) minmax(290px, 0.82fr);
      gap: 48px;
      align-items: center;
    }

    .hero-title {
      margin-bottom: 22px;
    }

    .h1-kick {
      display: block;
      font-size: 0.94rem;
      font-weight: 700;
      letter-spacing: 0.3em;
      text-transform: uppercase;
      color: var(--glow);
      margin-bottom: 12px;
    }

    .h1-main {
      font-size: clamp(2.1rem, 4.6vw, 3.6rem);
      font-weight: 800;
      line-height: 1.14;
      margin: 0;
      color: #ffffff;
      letter-spacing: 0.01em;
    }

    .h1-main .text-glow {
      color: var(--glow);
    }

    .hero-sub {
      margin: 0 0 30px;
      max-width: 58ch;
      color: var(--muted);
      font-size: 1.05rem;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
    }

    .btn-main,
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      border-radius: 8px;
      border: 1px solid transparent;
      font-size: 0.95rem;
      font-weight: 600;
      line-height: 1;
      padding: 0.85rem 1.5rem;
      cursor: pointer;
      transition: all 0.2s ease;
      white-space: nowrap;
    }

    .btn-main {
      background: linear-gradient(120deg, #1AA6C9, #56E3D6);
      color: #0A111E;
      box-shadow: 0 0 18px rgba(86, 227, 214, 0.25);
    }

    .btn-main:hover {
      filter: brightness(1.15);
      color: #0A111E;
      box-shadow: 0 0 24px rgba(86, 227, 214, 0.48);
      transform: translateY(-2px);
    }

    .btn-outline {
      background: transparent;
      color: var(--text);
      border-color: var(--line);
    }

    .btn-outline:hover {
      border-color: rgba(86, 227, 214, 0.72);
      color: #fff;
      background: rgba(86, 227, 214, 0.05);
    }

    .btn:focus-visible,
    .btn-main:focus-visible,
    .btn-outline:focus-visible {
      outline: 2px solid var(--glow);
      outline-offset: 3px;
      box-shadow: 0 0 0 4px rgba(86, 227, 214, 0.12);
    }

    .hero-visual {
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 14px;
    }

    .hero-card-cover {
      border-radius: var(--radius);
      border: 1px solid var(--line);
      overflow: hidden;
      background: var(--panel-bg);
      box-shadow: var(--shadow-lg);
    }

    .hero-card-cover img {
      width: 100%;
      height: 260px;
      object-fit: cover;
      border: none;
    }

    .hero-cover-info {
      position: absolute;
      left: 14px;
      right: 14px;
      bottom: 14px;
      background: rgba(10, 17, 30, 0.78);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(86, 227, 214, 0.18);
      border-radius: 8px;
      padding: 13px 15px;
      color: #fff;
    }

    .hero-cover-info strong {
      display: block;
      font-size: 0.95rem;
      color: #fff;
      font-weight: 600;
      margin-bottom: 3px;
    }

    .hero-cover-info span {
      font-size: 0.75rem;
      color: var(--muted);
    }

    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 6px;
    }

    .h-badge {
      border: 1px solid var(--line);
      background: rgba(86, 227, 214, 0.06);
      border-radius: 999px;
      color: var(--text);
      font-size: 0.75rem;
      padding: 4px 12px;
    }

    .scroll-down {
      position: absolute;
      bottom: 26px;
      left: 50%;
      transform: translateX(-50%);
      width: 22px;
      height: 38px;
      border: 1px solid var(--line);
      border-radius: 999px;
      display: flex;
      justify-content: center;
      padding-top: 8px;
    }

    .scroll-down::after {
      content: "";
      width: 3px;
      height: 8px;
      background: var(--glow);
      border-radius: 6px;
      animation: scrollMove 1.6s infinite;
    }

    @keyframes scrollMove {
      0% { transform: translateY(0); opacity: 1; }
      70% { transform: translateY(14px); opacity: 0; }
      100% { transform: translateY(0); opacity: 0; }
    }

    /* ===== Section Heading ===== */
    .sec-head {
      display: flex;
      flex-direction: column;
      gap: 8px;
      margin-bottom: 40px;
    }

    .sec-head h2 {
      font-size: clamp(1.6rem, 3vw, 2.35rem);
      font-weight: 800;
      margin: 0;
      color: #fff;
      letter-spacing: -0.02em;
    }

    .sec-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--glow);
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.16em;
      text-transform: uppercase;
    }

    .sec-sub {
      max-width: 66ch;
      color: var(--muted);
      margin-bottom: 0;
    }

    /* ===== Intro Card Grid ===== */
    .section-route {
      background: #0D1624;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }

    .route-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.95fr;
      grid-template-rows: auto auto;
      gap: 22px;
    }

    .route-card {
      background: var(--panel-bg);
      border: 1px solid var(--line);
      border-radius: 10px;
      padding: 28px;
      position: relative;
      overflow: hidden;
      box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
      transition: all 0.3s ease;
    }

    .route-card.large {
      grid-column: 1 / 2;
      grid-row: 1 / 3;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .route-card.large::before {
      content: "";
      position: absolute;
      top: 0;
      right: 0;
      width: 60%;
      height: 60%;
      background: url('/assets/images/backpic/back-3.png') no-repeat right top / cover;
      opacity: 0.1;
      pointer-events: none;
    }

    .route-card .card-mini-icon {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 42px;
      height: 42px;
      border-radius: 10px;
      margin-bottom: 18px;
      color: var(--glow);
      font-size: 17px;
      background: rgba(86, 227, 214, 0.1);
      border: 1px solid rgba(86, 227, 214, 0.2);
    }

    .route-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
    }

    .route-card p {
      color: var(--muted);
      line-height: 1.8;
      margin-bottom: 0;
      font-size: 0.92rem;
    }

    .route-card a.inline-link {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      color: var(--glow);
      font-weight: 600;
      font-size: 0.9rem;
      margin-top: 15px;
    }

    .route-card a.inline-link:hover {
      color: #fff;
    }

    .route-card:hover {
      border-color: rgba(86, 227, 214, 0.42);
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }

    /* ===== Step Section ===== */
    .step-zone {
      background:
        radial-gradient(circle at 90% 8%, rgba(246, 194, 75, 0.07), transparent 22%),
        #0A111E;
    }

    .step-flex {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 300px;
      gap: 42px;
    }

    .step-nodes {
      position: relative;
      padding: 0;
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 24px;
      margin: 0;
    }

    .step-item {
      display: flex;
      gap: 20px;
      background: var(--panel-bg);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 24px;
      position: relative;
      transition: all 0.3s ease;
    }

    .step-item:hover {
      border-color: rgba(86, 227, 214, 0.45);
      box-shadow: var(--shadow);
    }

    .step-no {
      flex: 0 0 52px;
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: rgba(26, 166, 201, 0.14);
      border: 1px solid rgba(86, 227, 214, 0.24);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.98rem;
      font-weight: 800;
      color: var(--glow);
      letter-spacing: -0.02em;
    }

    .step-body h3 {
      font-size: 1.2rem;
      color: #fff;
      margin-bottom: 8px;
    }

    .step-body p {
      margin-bottom: 9px;
      color: var(--muted);
      line-height: 1.8;
      font-size: 0.93rem;
    }

    .step-body ul {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
    }

    .step-body li {
      font-size: 0.78rem;
      color: #B9CEDC;
      background: rgba(26, 166, 201, 0.1);
      border: 1px solid rgba(26, 166, 201, 0.2);
      border-radius: 999px;
      padding: 3px 11px;
    }

    .step-note {
      position: sticky;
      top: 24px;
      align-self: start;
      background: rgba(16, 28, 44, 0.72);
      backdrop-filter: blur(12px);
      border: 1px solid var(--line);
      border-radius: 12px;
      padding: 24px;
    }

    .step-note h3 {
      display: flex;
      gap: 8px;
      font-size: 1.08rem;
      margin-bottom: 10px;
      color: #fff;
    }

    .step-note h3 i {
      color: var(--hot);
    }

    .step-note p {
      font-size: 0.9rem;
      color: var(--muted);
      line-height: 1.8;
    }

    .step-note a {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      color: var(--glow);
      font-weight: 600;
    }

    .step-note a:hover {
      color: #fff;
    }

    /* ===== Use Scenes ===== */
    .section-scenes {
      background: #0D1624;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }

    .scene-grid {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 38px;
      align-items: center;
    }

    .scene-image {
      position: relative;
    }

    .scene-image-main {
      border-radius: var(--radius);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-lg);
      overflow: hidden;
    }

    .scene-image-main img {
      width: 100%;
      height: 340px;
      object-fit: cover;
    }

    .scene-image::after {
      content: "";
      position: absolute;
      width: 72px;
      height: 72px;
      border-radius: 50%;
      right: -12px;
      bottom: -14px;
      background: rgba(86, 227, 214, 0.12);
      filter: blur(6px);
    }

    .scene-list {
      list-style: none;
      margin: 0;
      padding: 0;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .scene-list li {
      display: flex;
      align-items: flex-start;
      gap: 13px;
      background: rgba(16, 28, 44, 0.65);
      border: 1px solid var(--line);
      border-radius: 9px;
      padding: 14px 16px;
      color: var(--text);
      font-size: 0.89rem;
      transition: all 0.25s ease;
    }

    .scene-list li:hover {
      border-color: rgba(86, 227, 214, 0.35);
      background: var(--panel-bg);
      transform: translateX(4px);
    }

    .scene-list i {
      flex: 0 0 20px;
      color: var(--glow);
      margin-top: 4px;
    }

    /* ===== FAQ ===== */
    .section-faq {
      background: #0A111E;
    }

    .faq-wrap {
      max-width: 860px;
    }

    .guide-accordion .accordion-item {
      background: transparent;
      border: 0;
      border-bottom: 1px solid var(--line);
      border-radius: 0 !important;
    }

    .guide-accordion .accordion-button {
      background: transparent;
      border: 0;
      box-shadow: none;
      color: var(--text);
      padding: 22px 46px 22px 0;
      font-weight: 600;
      font-size: 1.02rem;
      line-height: 1.6;
      border-radius: 0;
      position: relative;
      transition: color 0.2s ease;
    }

    .guide-accordion .accordion-button:hover,
    .guide-accordion .accordion-button:not(.collapsed) {
      color: var(--glow);
    }

    .guide-accordion .accordion-button:not(.collapsed) {
      background: transparent;
      box-shadow: none;
    }

    .guide-accordion .accordion-button::after {
      content: "+";
      font-family: var(--font);
      font-weight: 400;
      background-image: none;
      width: 28px;
      height: 28px;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid rgba(141, 182, 210, 0.24);
      border-radius: 50%;
      font-size: 1.05rem;
      line-height: 1;
      color: var(--muted);
      transition: all 0.25s ease;
      position: absolute;
      right: 0;
      top: 50%;
      transform: translateY(-50%);
    }

    .guide-accordion .accordion-button:not(.collapsed)::after {
      content: "\00d7";
      color: var(--glow);
      border-color: rgba(86, 227, 214, 0.5);
      transform: translateY(-50%) rotate(90deg);
    }

    .guide-accordion .accordion-body {
      padding: 0 54px 24px 0;
      color: var(--muted);
      font-size: 0.92rem;
      line-height: 1.85;
    }

    /* ===== CTA ===== */
    .section-contact {
      background:
        linear-gradient(120deg, rgba(26, 166, 201, 0.12), transparent 52%),
        #0D1524;
      border-top: 1px solid var(--line);
    }

    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 0.9fr;
      gap: 52px;
      align-items: center;
    }

    .contact-copy h2 {
      font-size: clamp(1.8rem, 3vw, 2.5rem);
      font-weight: 800;
      color: #fff;
    }

    .contact-copy p {
      color: var(--muted);
      max-width: 38ch;
      line-height: 1.8;
    }

    .contact-copy .btn-main {
      margin-top: 14px;
    }

    .contact-form-card {
      background: rgba(16, 28, 44, 0.9);
      border: 1px solid var(--line);
      border-radius: 12px;
      padding: 26px;
      box-shadow: var(--shadow-lg);
    }

    .form-label {
      font-weight: 600;
      color: #fff;
      font-size: 0.84rem;
      margin-bottom: 7px;
    }

    .form-control {
      background: #0A1320;
      border: 1px solid var(--line);
      border-radius: 8px;
      color: var(--text);
      padding: 12px 14px;
      font-size: 0.9rem;
    }

    .form-control:focus {
      background: #0A1320;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(86, 227, 214, 0.15);
      color: #fff;
    }

    textarea.form-control {
      min-height: 92px;
    }

    .contact-form-card .btn-main {
      width: 100%;
      justify-content: center;
      margin-top: 6px;
    }

    /* ===== Button focus global ===== */
    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible {
      outline: 2px solid var(--glow);
      outline-offset: 3px;
    }

    /* ===== Media Queries ===== */
    @media (min-width: 992px) {
      .main-wrap {
        margin-left: var(--side-w);
        width: calc(100% - var(--side-w));
      }
    }

    @media (max-width: 991.98px) {
      .app-side {
        width: 260px;
        transform: translateX(-108%);
        transition: transform 0.3s ease-in-out;
        box-shadow: 18px 0 48px rgba(0, 0, 0, 0.5);
      }

      .app-side.is-open {
        transform: translateX(0);
      }

      .mobile-topbar {
        display: flex;
      }

      .main-wrap {
        padding-top: 66px;
        margin-left: 0;
        width: 100%;
      }

      .side-overlay.show {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(4, 8, 15, 0.64);
        backdrop-filter: blur(3px);
        z-index: 1030;
        cursor: pointer;
      }

      .cat-hero {
        min-height: auto;
        padding-top: 54px;
      }

      .cat-hero__inner {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .route-grid {
        grid-template-columns: 1fr;
      }

      .route-card.large {
        grid-column: 1;
        grid-row: auto;
      }

      .scene-grid,
      .contact-grid {
        grid-template-columns: 1fr;
      }

      .scene-image-main img {
        height: 300px;
      }

      .step-flex {
        grid-template-columns: 1fr;
      }

      .step-note {
        position: static;
      }

      .footer-layout {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 767.98px) {
      .content-k {
        width: min(100% - 32px, 1180px);
      }

      .footer-layout {
        grid-template-columns: 1fr;
        gap: 21px;
        padding: 40px 0 24px;
      }

      .hero-card-cover img {
        height: 220px;
      }

      .scroll-down {
        display: none;
      }

      .h1-main {
        font-size: clamp(1.8rem, 8vw, 2.6rem);
      }

      .hero-sub {
        font-size: 0.95rem;
      }

      .route-card,
      .step-item {
        padding: 20px;
      }

      .step-item {
        gap: 15px;
        flex-wrap: wrap;
      }

      .step-no {
        width: 46px;
        height: 46px;
        flex-basis: 46px;
        font-size: 0.9rem;
      }
    }

    @media (max-width: 575.98px) {
      .btn-main,
      .btn-outline {
        width: 100%;
        padding: 0.8rem 1rem;
      }

      .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }

      .mobile-brand {
        font-size: 0.8rem;
      }

      .guide-accordion .accordion-button {
        font-size: 0.95rem;
        padding: 20px 46px 20px 0;
      }

      .footer-bottom-inner {
        flex-direction: column;
        align-items: flex-start;
      }

      .scene-image-main img {
        height: 220px;
      }

      .contact-form-card {
        padding: 20px;
      }
    }

/* roulang page: category4 */
:root {
      --page-bg: #0A111E;
      --panel-bg: #101C2C;
      --panel-raised: #14263A;
      --glass-bg: rgba(17, 32, 52, 0.72);
      --primary: #1AA6C9;
      --primary-light: #56E3D6;
      --accent: #F6C24B;
      --border: rgba(141, 182, 210, 0.16);
      --border-strong: rgba(141, 182, 210, 0.28);
      --text-main: #EAF2F8;
      --text-secondary: #9DB0C0;
      --text-muted: #71869A;
      --radius: 10px;
      --radius-sm: 8px;
      --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.16);
      --shadow-hover: 0 18px 40px rgba(0, 0, 0, 0.28);
      --font-sans: system-ui, -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
      --side-width: 232px;
      --space-section: clamp(4rem, 8vw, 6.5rem);
      --content-max: 1180px;
    }

    *,
    *::before,
    *::after {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: var(--font-sans);
      background: var(--page-bg);
      color: var(--text-main);
      line-height: 1.8;
      min-height: 100vh;
      font-size: 1rem;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    a {
      text-decoration: none;
      transition: color .2s, border-color .2s, background .2s;
    }

    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    textarea:focus-visible,
    select:focus-visible,
    [tabindex]:focus-visible {
      outline: 2px solid var(--primary-light);
      outline-offset: 2px;
    }

    .container-k {
      width: 100%;
      max-width: var(--content-max);
      margin: 0 auto;
      padding: 0 clamp(20px, 4vw, 40px);
    }

    .site-shell {
      min-height: 100vh;
    }

    /* side panel */
    .side-panel {
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      width: var(--side-width);
      background: #0D1725;
      border-right: 1px solid rgba(141, 182, 210, 0.1);
      display: flex;
      flex-direction: column;
      z-index: 1050;
      padding: 20px 16px 18px;
    }

    .brand-lockup {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 8px 8px 18px;
      border-bottom: 1px solid rgba(141, 182, 210, 0.1);
      min-height: 72px;
      color: var(--text-main);
    }

    .brand-icon {
      width: 38px;
      height: 38px;
      flex: 0 0 38px;
      border: 1px solid rgba(86, 227, 214, 0.5);
      border-radius: 10px;
      display: grid;
      place-items: center;
      background: linear-gradient(135deg, rgba(26, 166, 201, 0.2), rgba(86, 227, 214, 0.05));
      color: var(--primary-light);
      font-size: 18px;
    }

    .brand-name {
      font-weight: 800;
      font-size: 1rem;
      line-height: 1.5;
      letter-spacing: 0.01em;
      white-space: normal;
    }

    .side-nav {
      display: flex;
      flex-direction: column;
      gap: 4px;
      margin-top: 16px;
      flex: 1;
    }

    .side-nav a {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 11px 14px;
      border-radius: var(--radius-sm);
      color: var(--text-secondary);
      font-size: 0.95rem;
      border: 1px solid transparent;
      font-weight: 500;
      position: relative;
    }

    .side-nav a i {
      width: 18px;
      text-align: center;
      color: var(--text-muted);
      transition: color .2s;
    }

    .side-nav a:hover {
      color: var(--text-main);
      background: rgba(26, 166, 201, 0.06);
    }

    .side-nav a:hover i {
      color: var(--primary-light);
    }

    .side-nav a.active {
      color: #fff;
      background: linear-gradient(90deg, rgba(26, 166, 201, 0.16), rgba(26, 166, 201, 0.04));
      border-color: rgba(86, 227, 214, 0.2);
    }

    .side-nav a.active::before {
      content: "";
      position: absolute;
      left: -16px;
      top: 8px;
      bottom: 8px;
      width: 2px;
      background: var(--primary-light);
      box-shadow: 0 0 10px var(--primary-light);
    }

    .side-nav a.active i {
      color: var(--primary-light);
    }

    .side-contact-card {
      background: rgba(26, 166, 201, 0.08);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 14px;
      margin-top: 12px;
    }

    .side-contact-card strong {
      display: block;
      color: var(--text-main);
      margin-bottom: 5px;
      font-size: 0.95rem;
    }

    .side-contact-card p {
      margin: 0;
      font-size: 0.8rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* main wrap */
    .main-wrap {
      margin-left: var(--side-width);
      display: flex;
      flex-direction: column;
      min-height: 100vh;
    }

    .site-content {
      flex: 1;
    }

    /* mobile topbar */
    .mobile-topbar {
      display: none;
      align-items: center;
      justify-content: space-between;
      height: 64px;
      padding: 0 20px;
      background: rgba(10, 17, 30, 0.9);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(141, 182, 210, 0.1);
      position: sticky;
      top: 0;
      z-index: 1040;
    }

    .mobile-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text-main);
      font-weight: 800;
      font-size: 0.95rem;
    }

    .mobile-menu-btn {
      width: 44px;
      height: 44px;
      border: 1px solid var(--border);
      background: transparent;
      border-radius: 8px;
      color: var(--text-main);
      font-size: 18px;
      display: grid;
      place-items: center;
    }

    .offcanvas-backdrop {
      background-color: rgba(5, 10, 18, 0.8);
      backdrop-filter: blur(2px);
    }

    .side-canvas {
      background: #0D1725 !important;
      border-right: 1px solid var(--border);
      padding: 22px 16px;
      width: 280px !important;
    }

    .side-canvas .side-contact-card {
      margin-top: auto;
    }

    .canvas-inner {
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    /* Hero */
    .account-hero {
      position: relative;
      overflow: hidden;
      padding: clamp(4rem, 8vw, 6.8rem) 0 clamp(3.5rem, 6vw, 5.5rem);
      background: linear-gradient(rgba(10, 17, 30, 0.78), rgba(10, 17, 30, 0.92)), url('/assets/images/backpic/back-1.webp') center 20% / cover no-repeat;
    }

    .account-hero::before {
      content: "";
      position: absolute;
      width: 480px;
      height: 480px;
      right: 5%;
      top: 20%;
      background: radial-gradient(circle, rgba(26, 166, 201, 0.14), transparent 65%);
      pointer-events: none;
    }

    .account-hero::after {
      content: "";
      position: absolute;
      inset: 0;
      background-image: linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
      background-size: 88px 88px;
      pointer-events: none;
    }

    .account-hero .container-k {
      position: relative;
      z-index: 1;
    }

    .hero-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      border: 1px solid rgba(86, 227, 214, 0.25);
      border-radius: 999px;
      color: var(--primary-light);
      font-size: 0.8rem;
      letter-spacing: 0.05em;
      background: rgba(16, 28, 44, 0.6);
      margin-bottom: 18px;
    }

    .account-hero h1 {
      margin: 0 0 22px;
      font-size: clamp(2.5rem, 4.8vw, 4rem);
      font-weight: 800;
      line-height: 1.12;
      letter-spacing: -0.02em;
      color: #fff;
    }

    .account-hero h1 .highlight {
      color: var(--primary-light);
      text-shadow: 0 0 26px rgba(86, 227, 214, 0.3);
    }

    .hero-lead {
      max-width: 760px;
      font-size: 1.08rem;
      color: var(--text-secondary);
      margin-bottom: 34px;
      line-height: 1.8;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    .btn-brand {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: linear-gradient(135deg, var(--primary-light), var(--primary));
      color: #071018;
      font-weight: 700;
      border: none;
      padding: 14px 28px;
      border-radius: var(--radius-sm);
      box-shadow: 0 0 18px rgba(86, 227, 214, 0.35);
      transition: transform .2s, box-shadow .2s, filter .2s;
    }

    .btn-brand:hover,
    .btn-brand:focus {
      color: #021016;
      filter: brightness(1.12);
      box-shadow: 0 0 28px rgba(86, 227, 214, 0.5);
      transform: translateY(-2px);
    }

    .btn-ghost {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: transparent;
      border: 1px solid rgba(141, 182, 210, 0.35);
      color: var(--text-main);
      font-weight: 600;
      padding: 14px 28px;
      border-radius: var(--radius-sm);
      transition: all .2s;
    }

    .btn-ghost:hover,
    .btn-ghost:focus {
      border-color: var(--primary-light);
      color: var(--primary-light);
      background: rgba(26, 166, 201, 0.08);
    }

    .scroll-sign {
      position: absolute;
      bottom: 28px;
      left: 50%;
      transform: translateX(-50%);
      width: 22px;
      height: 36px;
      border: 1px solid rgba(141, 182, 210, 0.5);
      border-radius: 12px;
      z-index: 2;
    }

    .scroll-sign::before {
      content: "";
      position: absolute;
      width: 3px;
      height: 9px;
      background: var(--primary-light);
      border-radius: 2px;
      left: 50%;
      top: 6px;
      transform: translateX(-50%);
      animation: scrollDown 1.6s infinite;
    }

    @keyframes scrollDown {
      0% { opacity: 1; transform: translate(-50%, 0); }
      70% { opacity: 0; transform: translate(-50%, 12px); }
      100% { opacity: 0; transform: translate(-50%, 0); }
    }

    /* generic section */
    .section-block {
      padding: var(--space-section) 0;
      position: relative;
    }

    .section-title-row {
      margin-bottom: 40px;
    }

    .section-title-row .over-label {
      color: var(--primary-light);
      font-size: 0.8rem;
      letter-spacing: 0.1em;
      margin-bottom: 8px;
      font-weight: 600;
    }

    .section-title-row h2 {
      font-size: clamp(1.8rem, 3vw, 2.5rem);
      font-weight: 800;
      color: #fff;
      letter-spacing: -0.01em;
      margin: 0 0 12px;
    }

    .section-title-row p {
      max-width: 760px;
      margin: 0;
      color: var(--text-secondary);
      font-size: 1rem;
    }

    /* support scope */
    .scope-bg {
      background: #0B1624;
      border-top: 1px solid rgba(141, 182, 210, 0.08);
      border-bottom: 1px solid rgba(141, 182, 210, 0.08);
    }

    .scope-grid {
      display: grid;
      grid-template-columns: repeat(12, 1fr);
      gap: 20px;
    }

    .scope-lead-card {
      grid-column: span 7;
      background: var(--panel-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      display: flex;
      min-height: 100%;
    }

    .scope-lead-card .scope-img {
      flex: 0 0 44%;
      max-width: 44%;
      min-height: 260px;
      background-size: cover;
      background-position: center;
      position: relative;
    }

    .scope-lead-card .scope-img::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, transparent, rgba(16, 28, 44, 0.85) 98%);
    }

    .scope-lead-body {
      padding: 28px 26px;
      display: flex;
      flex-direction: column;
    }

    .scope-lead-body h3 {
      color: var(--text-main);
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .scope-lead-body p {
      color: var(--text-secondary);
      font-size: 0.95rem;
      line-height: 1.8;
      margin-bottom: 14px;
    }

    .scope-point {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--primary-light);
      font-size: 0.82rem;
      font-weight: 500;
      margin-top: auto;
      padding-top: 8px;
    }

    .scope-item {
      grid-column: span 5;
      background: rgba(16, 28, 44, 0.8);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 26px;
      transition: transform .22s, border .22s, box-shadow .22s;
      box-shadow: var(--shadow-card);
    }

    .scope-item:hover {
      transform: translateY(-4px);
      border-color: rgba(86, 227, 214, 0.4);
      box-shadow: var(--shadow-hover);
    }

    .scope-icon {
      width: 46px;
      height: 46px;
      border-radius: 10px;
      background: rgba(26, 166, 201, 0.1);
      border: 1px solid rgba(86, 227, 214, 0.2);
      display: grid;
      place-items: center;
      color: var(--primary-light);
      font-size: 20px;
      margin-bottom: 18px;
    }

    .scope-item h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 8px;
    }

    .scope-item p {
      color: var(--text-secondary);
      font-size: 0.92rem;
      margin: 0;
      line-height: 1.7;
    }

    .tag-line {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 14px;
    }

    .tag-sm {
      font-size: 0.74rem;
      color: var(--text-secondary);
      border: 1px solid var(--border);
      border-radius: 999px;
      padding: 3px 10px;
      letter-spacing: .03em;
    }

    /* process */
    .process-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: clamp(28px, 5vw, 64px);
      align-items: center;
    }

    .process-visual {
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border);
      position: relative;
      min-height: 300px;
      background: var(--panel-bg);
    }

    .process-visual img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      min-height: 320px;
    }

    .process-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .process-list li {
      display: flex;
      gap: 18px;
      padding: 22px 0;
      border-bottom: 1px solid rgba(141, 182, 210, 0.1);
    }

    .process-list li:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }

    .process-no {
      flex: 0 0 48px;
      width: 48px;
      height: 48px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      border: 1px solid rgba(86, 227, 214, 0.35);
      color: var(--primary-light);
      font-weight: 800;
      background: rgba(26, 166, 201, 0.06);
    }

    .process-info h3 {
      color: #fff;
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 4px;
    }

    .process-info p {
      color: var(--text-secondary);
      margin: 0;
      font-size: 0.94rem;
      line-height: 1.6;
    }

    /* security notice */
    .security-section {
      background: #0B1624;
      border-top: 1px solid rgba(141, 182, 210, 0.08);
      border-bottom: 1px solid rgba(141, 182, 210, 0.08);
    }

    .security-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: clamp(28px, 5vw, 60px);
      align-items: center;
    }

    .security-copy h2 {
      color: #fff;
      font-size: clamp(1.8rem, 3vw, 2.4rem);
      font-weight: 800;
      margin-bottom: 16px;
    }

    .security-copy p {
      color: var(--text-secondary);
      line-height: 1.8;
      margin-bottom: 20px;
    }

    .check-list {
      list-style: none;
      margin: 0 0 24px;
      padding: 0;
    }

    .check-list li {
      position: relative;
      padding-left: 30px;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.7;
    }

    .check-list li::before {
      content: "\f00c";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      position: absolute;
      left: 0;
      top: 3px;
      color: var(--primary-light);
      font-size: 14px;
    }

    .security-visual {
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-card);
      position: relative;
    }

    .security-visual img {
      width: 100%;
      object-fit: cover;
      min-height: 300px;
    }

    /* faq */
    .faq-wrap {
      max-width: 860px;
    }

    .faq-custom .accordion-item {
      background: transparent;
      border: none;
      border-bottom: 1px solid rgba(141, 182, 210, 0.12);
    }

    .faq-custom .accordion-button {
      background: transparent;
      box-shadow: none;
      padding: 22px 46px 22px 0;
      font-weight: 700;
      font-size: 1.02rem;
      color: var(--text-main);
      border: none;
      position: relative;
    }

    .faq-custom .accordion-button::after {
      display: none;
    }

    .faq-custom .accordion-button::before {
      content: "\f067";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      position: absolute;
      right: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 30px;
      height: 30px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      border: 1px solid var(--border);
      color: var(--primary-light);
      font-size: 12px;
      transition: transform .25s;
    }

    .faq-custom .accordion-button:not(.collapsed)::before {
      content: "\f00d";
      transform: translateY(-50%) rotate(90deg);
    }

    .faq-custom .accordion-button:not(.collapsed) {
      color: var(--primary-light);
      background: transparent;
    }

    .faq-custom .accordion-collapse {
      transition: all .25s;
    }

    .faq-custom .accordion-body {
      padding: 0 30px 24px 0;
      color: var(--text-secondary);
      line-height: 1.8;
      font-size: 0.95rem;
    }

    /* contact */
    .contact-section {
      background: linear-gradient(135deg, rgba(26, 166, 201, 0.04), rgba(16, 28, 44, 0.6));
      position: relative;
    }

    .contact-grid {
      display: grid;
      grid-template-columns: 5fr 7fr;
      gap: clamp(28px, 5vw, 64px);
      align-items: start;
    }

    .contact-title {
      color: #fff;
      font-size: clamp(1.7rem, 2.4vw, 2.4rem);
      font-weight: 800;
      line-height: 1.4;
      margin-bottom: 16px;
    }

    .contact-note {
      color: var(--text-secondary);
      margin-bottom: 18px;
      line-height: 1.7;
      font-size: 0.95rem;
    }

    .contact-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .chip-light {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      color: var(--text-secondary);
      font-size: 0.82rem;
      border: 1px solid var(--border);
      border-radius: 999px;
      background: rgba(16, 28, 44, 0.6);
      padding: 8px 16px;
    }

    .chip-light i {
      color: var(--primary-light);
      font-size: 13px;
    }

    .contact-form-card {
      background: rgba(16, 28, 44, 0.8);
      border: 1px solid var(--border);
      border-radius: 14px;
      padding: clamp(22px, 3vw, 34px);
      box-shadow: var(--shadow-card);
      backdrop-filter: blur(10px);
    }

    .form-label-custom {
      display: block;
      font-size: 0.87rem;
      color: var(--text-secondary);
      margin-bottom: 7px;
      font-weight: 500;
    }

    .form-control-dark {
      width: 100%;
      padding: 12px 14px;
      background: rgba(10, 19, 32, 0.9);
      border: 1px solid rgba(141, 182, 210, 0.18);
      border-radius: var(--radius-sm);
      color: var(--text-main);
      transition: border .2s, box-shadow .2s;
      font-size: 0.95rem;
    }

    .form-control-dark:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 2px rgba(26, 166, 201, 0.14);
    }

    .form-control-dark::placeholder {
      color: #66798A;
      font-size: 0.9rem;
    }

    .form-mb {
      margin-bottom: 22px;
    }

    select.form-control-dark {
      appearance: none;
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%239DB0C0'%3e%3cpath d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
      background-repeat: no-repeat;
      background-position: right 14px center;
      padding-right: 36px;
    }

    /* footer */
    .site-footer {
      background: #0B1420;
      border-top: 1px solid rgba(141, 182, 210, 0.1);
      margin-top: 0;
    }

    .footer-layout {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr 1fr;
      gap: 36px;
      padding: clamp(3rem, 6vw, 5rem) 0 2rem;
    }

    .footer-brand-text {
      font-size: 1.3rem;
      font-weight: 800;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
    }

    .footer-brand-text i {
      color: var(--primary-light);
      font-size: 22px;
    }

    .footer-desc {
      color: var(--text-secondary);
      font-size: 0.9rem;
      max-width: 360px;
      line-height: 1.8;
      margin: 0;
    }

    .footer-col-title {
      color: #fff;
      font-weight: 700;
      font-size: 1rem;
      margin-bottom: 14px;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-links a {
      color: var(--text-secondary);
      font-size: 0.9rem;
      display: inline-block;
      padding: 2px 0;
    }

    .footer-links a:hover {
      color: var(--primary-light);
    }

    .footer-contact {
      list-style: none;
      padding: 0;
      margin: 0;
      color: var(--text-secondary);
      line-height: 1.8;
      font-size: 0.9rem;
    }

    .footer-contact li {
      margin-bottom: 8px;
    }

    .footer-contact i {
      color: var(--primary-light);
      width: 22px;
      margin-right: 6px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(141, 182, 210, 0.07);
      padding: 22px 0;
    }

    .footer-bottom-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
      color: var(--text-muted);
      font-size: 0.82rem;
    }

    /* responsive */
    @media (max-width: 991.98px) {
      .side-panel {
        display: none;
      }

      .main-wrap {
        margin-left: 0;
      }

      .mobile-topbar {
        display: flex;
      }

      .scope-grid {
        grid-template-columns: 1fr;
      }

      .scope-lead-card,
      .scope-item {
        grid-column: span 1;
      }

      .scope-lead-card .scope-img {
        flex: 0 0 40%;
        max-width: 40%;
      }

      .process-grid,
      .security-grid,
      .contact-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 767.98px) {
      .account-hero h1 {
        font-size: clamp(2rem, 8vw, 2.8rem);
      }

      .hero-actions .btn-brand,
      .hero-actions .btn-ghost {
        width: 100%;
      }

      .scope-lead-card {
        flex-direction: column;
      }

      .scope-lead-card .scope-img {
        flex: unset;
        max-width: 100%;
        width: 100%;
        min-height: 200px;
      }

      .scope-lead-card .scope-img::after {
        background: linear-gradient(180deg, transparent, rgba(16, 28, 44, 0.85));
      }

      .footer-layout {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .footer-bottom-inner {
        flex-direction: column;
        text-align: center;
      }

      .process-visual img {
        min-height: 220px;
      }
    }

    @media (max-width: 575.98px) {
      .section-title-row h2 {
        font-size: 1.7rem;
      }

      .scope-item {
        padding: 20px;
      }

      .process-list li {
        gap: 14px;
      }

      .process-no {
        flex-basis: 42px;
        width: 42px;
        height: 42px;
        font-size: 0.9rem;
      }

      .process-info h3 {
        font-size: 1.05rem;
      }

      .faq-custom .accordion-button {
        font-size: 0.95rem;
        padding: 18px 38px 18px 0;
      }

      .faq-custom .accordion-body {
        font-size: 0.9rem;
        padding-right: 12px;
      }

      .contact-form-card {
        padding: 20px;
      }
    }

/* roulang page: category1 */
:root{
  --bg:#0A111E;
  --bg-soft:#101C2C;
  --bg-soft2:#132135;
  --primary:#1AA6C9;
  --glow:#56E3D6;
  --amber:#F6C24B;
  --line:rgba(141,182,210,0.18);
  --line-light:rgba(141,182,210,0.32);
  --text:#EAF2F8;
  --muted:#9DB0C0;
  --faint:#71869A;
  --radius:10px;
  --shadow:0 10px 30px rgba(0,0,0,.18);
  --transition:.25s ease;
  --side-width:232px;
}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font:1rem/1.8 "system-ui",-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  -webkit-font-smoothing:antialiased;
}
*,*::before,*::after{box-sizing:border-box}
img{max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin:0}
.content-k{width:min(1180px,calc(100% - clamp(2rem,4vw,4rem)));margin-inline:auto}

/* 左侧导航 */
.site-sidebar{
  position:fixed;
  inset:0 auto 0 0;
  width:var(--side-width);
  background:rgba(16,28,44,.92);
  border-right:1px solid var(--line);
  z-index:1050;
  display:flex;
  flex-direction:column;
  padding:20px 14px;
  transition:transform .28s ease;
}
.side-brand{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:10px 6px 24px;
  border-bottom:1px solid rgba(141,182,210,.2);
  color:#fff;
}
.brand-mark{
  width:34px;height:34px;
  border-radius:8px;
  background:linear-gradient(135deg,rgba(26,166,201,.2),rgba(86,227,214,.16));
  border:1px solid rgba(86,227,214,.4);
  display:grid;place-items:center;
  color:var(--glow);
  font-size:16px;
  flex:0 0 auto;
}
.brand-name{
  font-weight:700;
  font-size:1.05rem;
  letter-spacing:.02em;
  line-height:1.5;
}
.brand-subhead{
  display:block;
  font-size:.72rem;
  color:var(--faint);
  margin-top:2px;
  font-weight:400;
  letter-spacing:.08em;
}
.side-nav{
  display:flex;
  flex-direction:column;
  gap:4px;
  margin-top:20px;
  flex:1;
}
.side-nav a{
  display:flex;
  align-items:center;
  gap:12px;
  color:var(--muted);
  font-size:.92rem;
  padding:11px 12px;
  border-radius:8px;
  border:1px solid transparent;
  font-weight:500;
  transition:all var(--transition);
  position:relative;
}
.side-nav a i{width:18px;text-align:center;font-size:15px;color:var(--faint);transition:color var(--transition)}
.side-nav a:hover{
  color:#fff;
  background:rgba(86,227,214,.06);
}
.side-nav a:hover i{color:var(--glow)}
.side-nav a.active{
  color:#fff;
  font-weight:600;
  background:linear-gradient(90deg,rgba(26,166,201,.14),rgba(26,166,201,.03));
  border-color:rgba(86,227,214,.24);
}
.side-nav a.active::before{
  content:"";
  position:absolute;left:-14px;top:8px;bottom:8px;
  width:2px;
  background:var(--glow);
  box-shadow:0 0 8px rgba(86,227,214,.6);
}
.side-nav a.active i{color:var(--glow)}
.side-footer-card{
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:10px;
  padding:12px;
  margin-top:8px;
}
.side-footer-card strong{display:block;font-size:.82rem;color:var(--text)}
.side-footer-card span{display:block;font-size:.75rem;color:var(--faint);margin-top:2px;line-height:1.6}
.side-help-link{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:10px;
  color:var(--glow);
  font-size:.78rem;
}
.content-main{margin-left:var(--side-width);min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}

/* 移动顶栏 */
.mobile-topbar{
  display:none;
  height:64px;
  padding:0 20px;
  align-items:center;
  justify-content:space-between;
  background:rgba(10,17,30,.92);
  border-bottom:1px solid var(--line);
  position:fixed;top:0;left:0;right:0;
  z-index:1035;
}
.mobile-brand{
  font-weight:700;
  color:var(--text);
  display:flex;
  align-items:center;
  gap:10px;
}
.nav-toggle{
  width:44px;height:44px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:8px;
  color:var(--text);
  font-size:16px;
  display:grid;place-items:center;
}
.nav-toggle:hover{border-color:var(--glow);color:var(--glow)}
.sidebar-backdrop{display:none}
body.nav-open .site-sidebar{transform:translateX(0)}
body.nav-open .sidebar-backdrop{
  display:block;
  position:fixed;inset:0;
  background:rgba(2,5,12,.72);
  z-index:1045;
}

/* 通用按钮 */
.btn-k{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.6rem;
  padding:.82rem 1.5rem;
  border-radius:8px;
  font-weight:600;
  border:1px solid transparent;
  transition:all var(--transition);
  white-space:nowrap;
  vertical-align:middle;
  text-decoration:none;
  color:var(--text);
}
.btn-main{
  background:linear-gradient(135deg,var(--primary),var(--glow));
  color:#07111F;
  border-color:rgba(86,227,214,.3);
  box-shadow:0 0 18px rgba(86,227,214,.22), 0 8px 18px rgba(0,0,0,.2);
}
.btn-main:hover,.btn-main:focus{filter:brightness(1.08);color:#07111F;box-shadow:0 0 24px rgba(86,227,214,.46)}
.btn-ghost{background:rgba(86,227,214,.02);border-color:rgba(141,182,210,.4);color:#dcebf6}
.btn-ghost:hover,.btn-ghost:focus{border-color:var(--glow);color:#fff;background:rgba(86,227,214,.06)}
.btn-amber{background:linear-gradient(135deg,#F6C24B,#E8A837);color:#17120d;box-shadow:0 0 16px rgba(246,194,75,.2)}
.btn-amber:hover{color:#17120d;filter:brightness(1.06)}
:focus-visible{outline:2px solid var(--glow);outline-offset:2px;box-shadow:0 0 0 4px rgba(86,227,214,.14)}

/* Hero */
.hero-section{
  position:relative;
  min-height:calc(100vh - 80px);
  display:flex;
  align-items:center;
  overflow:hidden;
  background:
    linear-gradient(120deg,rgba(5,10,18,.94),rgba(10,17,30,.78)),
    url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  isolation:isolate;
}
.hero-section::before{
  content:"";
  position:absolute;inset:0;z-index:-1;
  background-image:
    linear-gradient(rgba(86,227,214,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(86,227,214,.045) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse at center,rgba(0,0,0,.9),transparent 80%);
  mask-image:radial-gradient(ellipse at center,rgba(0,0,0,.9),transparent 80%);
}
.hero-inner{
  padding:clamp(80px,10vh,130px) 0;
  width:min(1180px,calc(100% - clamp(2rem,4vw,4rem)));
  margin-inline:auto;
  max-width:1180px;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid rgba(86,227,214,.28);
  background:rgba(26,166,201,.08);
  color:var(--glow);
  border-radius:30px;
  font-size:.78rem;
  padding:.32rem .8rem;
  margin-bottom:24px;
  letter-spacing:.02em;
}
.hero-badge .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--glow);
  box-shadow:0 0 0 3px rgba(86,227,214,.16);
  animation:pulse 2.2s infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.45}}
.hero-section h1{
  font-size:clamp(2.5rem,4.8vw,4rem);
  font-weight:800;
  line-height:1.22;
  letter-spacing:-.02em;
  color:#F3F9FE;
  margin-bottom:24px;
  max-width:900px;
}
.hero-section h1 .text-glow{
  color:var(--glow);
  text-shadow:0 0 28px rgba(86,227,214,.3);
}
.hero-section h1 .text-primary-tint{color:var(--primary)}
.hero-lead{
  max-width:680px;
  font-size:1.1rem;
  color:#C0D3E1;
  line-height:1.9;
  margin-bottom:36px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-scroll{
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  gap:8px;
  color:var(--faint);
  font-size:.75rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  margin-top:70px;
}
.hero-scroll-line{
  width:1px;height:46px;
  background:linear-gradient(var(--glow),transparent);
  position:relative;overflow:hidden;
}
.hero-scroll-line::after{
  content:"";position:absolute;left:0;top:-50%;width:100%;height:50%;
  background:#fff;
  animation:scrollLine 2.4s ease-in-out infinite;
}
@keyframes scrollLine{0%{top:-50%}100%{top:100%}}

/* 通用 page-section */
.page-section{
  padding:clamp(4rem,8vw,6.5rem) 0;
  position:relative;
}
.section-head{
  max-width:830px;
  margin-bottom:clamp(2.2rem,4vw,3.4rem);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--glow);
  font-size:.78rem;
  letter-spacing:.16em;
  margin-bottom:14px;
  font-weight:600;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--glow)}
.section-head h2{
  font-size:clamp(1.8rem,3vw,2.5rem);
  font-weight:800;
  color:var(--text);
  line-height:1.3;
  margin-bottom:14px;
  letter-spacing:-.01em;
}
.section-head p.section-note{
  color:var(--muted);
  font-size:1rem;
  line-height:1.85;
}
.text-secondary{color:var(--muted)}

/* 后台 简介 intro-block */
.intro-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:64px;
  align-items:center;
}
.intro-copy .lead-copy{
  color:var(--muted);
  font-size:1.05rem;
  line-height:2;
  margin-bottom:28px;
}
.entry-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:14px;
}
.entry-list li{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:14px 16px;
  border:1px solid var(--line);
  background:rgba(16,28,44,.6);
  border-radius:10px;
}
.entry-list li span{
  width:32px;height:32px;
  border-radius:8px;
  background:rgba(86,227,214,.08);
  color:var(--glow);
  display:grid;place-items:center;
  font-size:.9rem;
  flex:0 0 auto;
}
.entry-list li strong{display:block;font-size:.95rem;color:#E2F1FA}
.entry-list li small{color:var(--faint);font-size:.8rem;line-height:1.6}
.intro-media{
  position:relative;
  aspect-ratio:4/3;
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--line);
  background:#0d1726;
  box-shadow:var(--shadow);
  min-height:0;
}
.intro-media img{width:100%;height:100%;object-fit:cover;display:block}
.intro-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 35%,rgba(5,10,18,.22));
}
.img-corner-tag{
  position:absolute;
  left:16px;bottom:14px;
  background:rgba(10,17,30,.76);
  border:1px solid rgba(86,227,214,.3);
  color:#cdeef8;
  font-size:.76rem;
  padding:.28rem .7rem;
  border-radius:30px;
  backdrop-filter:blur(8px);
  z-index:2;
}

/* 功能服务 feature 区块 */
.feature-area{background:rgba(16,28,44,.44);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.feature-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}
.feature-card{
  background:var(--bg-soft);
  border:1px solid var(--line);
  border-radius:10px;
  padding:28px 26px;
  transition:all var(--transition);
  position:relative;
  overflow:hidden;
}
.feature-card.large{
  grid-row:span 2;
  background:linear-gradient(145deg,rgba(26,166,201,.12),rgba(10,17,30,.4)),var(--bg-soft);
}
.feature-card:hover{
  transform:translateY(-4px);
  border-color:rgba(86,227,214,.4);
  box-shadow:0 14px 32px rgba(0,0,0,.3), 0 0 0 1px rgba(86,227,214,.12);
}
.feature-card i{
  width:44px;height:44px;
  font-size:1.2rem;
  display:grid;place-items:center;
  border-radius:10px;
  color:var(--glow);
  background:rgba(86,227,214,.08);
  border:1px solid rgba(86,227,214,.18);
  margin-bottom:18px;
}
.feature-card h3{
  font-size:1.2rem;
  font-weight:700;
  color:var(--text);
  margin-bottom:10px;
}
.feature-card p{
  color:var(--muted);
  font-size:.92rem;
  line-height:1.8;
}
.feature-card .feature-tag{
  position:absolute;
  top:22px;right:22px;
  font-size:.7rem;
  letter-spacing:.1em;
  color:var(--faint);
  border:1px solid var(--line);
  padding:.18rem .5rem;
  border-radius:20px;
}
.feature-card .more-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:18px;
  color:var(--glow);
  font-size:.9rem;
}
.feature-card .more-link:hover{gap:12px}

/* 状态统计 strip */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);
  border-left:0;
  border-right:0;
  background:rgba(16,28,44,.4);
}
.stat-cell{
  padding:clamp(1.6rem,3vw,2.6rem) 22px;
  text-align:center;
  border-right:1px solid var(--line);
}
.stat-cell:last-child{border-right:0}
.stat-num{
  font-size:clamp(1.8rem,3vw,2.8rem);
  font-weight:800;
  color:#fff;
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.stat-num small{font-size:.7em;color:var(--glow);font-weight:600;margin-left:4px}
.stat-label{color:var(--faint);font-size:.85rem;letter-spacing:.08em;margin-top:6px}

/* 使用场景 usage */
.scene-grid{
  display:grid;
  grid-template-columns:.92fr 1.08fr;
  gap:60px;
  align-items:center;
}
.scene-media-card{
  position:relative;
  border-radius:14px;
  overflow:hidden;
  aspect-ratio:16/11;
  border:1px solid var(--line);
  background:var(--bg-soft);
}
.scene-media-card img{width:100%;height:100%;object-fit:cover;display:block}
.scene-media-card::after{background:linear-gradient(135deg,rgba(10,17,30,.34),transparent 65%);content:"";position:absolute;inset:0}
.scene-list{display:grid;gap:22px}
.scene-item{
  display:flex;gap:20px;
  padding-bottom:22px;
  border-bottom:1px dashed rgba(141,182,210,.2);
  position:relative;
}
.scene-item:last-child{border-bottom:0;padding-bottom:0}
.scene-num{
  font-size:1.6rem;
  font-weight:800;
  color:transparent;
  -webkit-text-stroke:1px rgba(86,227,214,.7);
  line-height:1;
  flex:0 0 52px;
}
.scene-item h3{font-size:1.08rem;font-weight:700;color:var(--text);margin-bottom:4px}
.scene-item p{color:var(--muted);font-size:.94rem;line-height:1.8}
.scene-item a{color:var(--glow);font-size:.9rem;display:inline-flex;gap:6px;margin-top:8px}

/* 流程 guide */
.path-wrap{
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:64px;
  align-items:stretch;
}
.step-number-list{display:grid}
.step-item{
  display:grid;
  grid-template-columns:58px 1fr;
  gap:18px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
  position:relative;
}
.step-item:last-child{border-bottom:0}
.step-index{
  width:44px;height:44px;
  font-variant-numeric:tabular-nums;
  font-weight:800;
  color:var(--glow);
  border:1px solid rgba(86,227,214,.32);
  background:rgba(86,227,214,.04);
  display:grid;place-items:center;
  border-radius:10px;
  font-size:1.05rem;
}
.step-item h3{font-size:1.1rem;color:var(--text);font-weight:700;margin-bottom:6px}
.step-item p{color:var(--muted);font-size:.93rem;line-height:1.8;max-width:560px}
.path-aside{
  background:linear-gradient(145deg,rgba(26,166,201,.08),rgba(10,17,30,.2)),var(--bg-soft);
  border:1px solid var(--line);
  border-radius:12px;
  padding:28px 26px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  position:relative;
  overflow:hidden;
}
.path-aside::before{
  content:"";
  position:absolute;
  width:140px;height:140px;
  right:-45px;top:-45px;
  border-radius:50%;
  background:rgba(86,227,214,.09);
  filter:blur(20px);
}
.path-aside h3{font-size:1.35rem;color:#fff;margin-bottom:12px;font-weight:700}
.path-aside p{color:var(--muted);line-height:1.95;font-size:.95rem;margin-bottom:20px}
.path-aside .btn-k{align-self:flex-start}

/* FAQ */
.faq-section{background:rgba(16,28,44,.5);border-top:1px solid var(--line)}
.faq-layout{display:grid;grid-template-columns:.42fr .58fr;gap:50px;align-items:start}
.faa-side-title h2{font-size:clamp(1.9rem,3vw,2.4rem)}
.faq-accordion{
  border-top:1px solid var(--line);
}
.faq-accordion .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
}
.faq-accordion .accordion-button{
  background:transparent;
  box-shadow:none;
  padding:20px 42px 20px 0;
  font-size:1.02rem;
  font-weight:600;
  color:#EAF2F8;
  letter-spacing:.01em;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--glow)}
.faq-accordion .accordion-button::after{
  font-family:"Font Awesome 6 Free";
  content:"\f067";
  font-weight:900;
  font-size:.8rem;
  background:none;
  width:16px;height:16px;
  line-height:20px;
  text-align:center;
  color:var(--faint);
  transition:transform .3s ease,color .3s ease;
  margin-left:auto;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  color:var(--glow);
  transform:rotate(45deg);
}
.faq-accordion .accordion-body{
  padding:0 35px 22px 0;
  color:var(--muted);
  font-size:.95rem;
  line-height:1.85;
}
.faq-accordion .accordion-button:focus{box-shadow:none}

/* CTA / Contact */
.cta-grid{
  display:grid;
  grid-template-columns:.95fr 1.05fr;
  gap:64px;
  align-items:start;
}
.cta-copy h2{font-size:clamp(2rem,3.4vw,2.7rem);line-height:1.3}
.cta-copy p{color:var(--muted);margin-top:18px;line-height:2}
.contact-panel{
  background:var(--bg-soft);
  border:1px solid var(--line);
  padding:30px;
  border-radius:12px;
  box-shadow:var(--shadow);
}
.form-label{color:#C9D8E5;font-size:.88rem;margin-bottom:.35rem;font-weight:500}
.form-control,.form-select{
  background:#0A1320;
  border:1px solid rgba(141,182,210,.26);
  color:#EAF2F8;
  border-radius:8px;
  padding:.75rem .9rem;
  font-size:.94rem;
  transition:border-color .2s,box-shadow .2s;
}
.form-control::placeholder{color:#5f7285}
.form-control:focus,.form-select:focus{
  background:#0A1320;
  border-color:var(--primary);
  box-shadow:0 0 0 .2rem rgba(26,166,201,.2);
  color:#fff;
}
textarea.form-control{min-height:104px;resize:vertical}
.form-select{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='%237A8EA2' d='M4.646 6.146a.5.5 0 0 1 .708 0L8 8.793l2.646-2.647a.5.5 0 0 1 .708.708l-3 3a.5.5 0 0 1-.708 0l-3-3a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e")}

/* footer */
.site-footer{
  background:#0d1624;
  border-top:1px solid var(--line);
  padding-top:clamp(2.6rem,5vw,4rem);
  width:100%;
}
.footer-layout{
  display:grid;
  grid-template-columns:1.4fr .9fr .9fr;
  gap:45px;
}
.footer-brand-text{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-weight:700;font-size:1.2rem;
  margin-bottom:12px;
}
.footer-brand-text i{
  color:var(--glow);
  width:24px;height:24px;
  background:rgba(86,227,214,.1);
  border-radius:6px;
  display:grid;place-items:center;
  font-size:.78rem;
}
.footer-desc{color:var(--faint);font-size:.9rem;line-height:1.95;max-width:400px}
.footer-col-title{color:#D6E5EF;font-size:.9rem;font-weight:600;margin-bottom:14px;letter-spacing:.03em}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-links a{color:var(--faint);font-size:.9rem;transition:color .2s,padding-left .2s}
.footer-links a:not(:hover)::before{content:"› ";color:var(--primary);}
.footer-links a:hover{color:var(--glow);padding-left:3px}
.footer-contact li{color:var(--faint);font-size:.9rem;padding:5px 0;display:flex;gap:10px;align-items:center}
.footer-contact i{color:var(--primary);width:16px;text-align:center}
.footer-bottom{margin-top:clamp(2rem,4vw,3rem);border-top:1px solid rgba(141,182,210,.12)}
.footer-bottom-inner{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:8px;
  color:#64798c;
  font-size:.8rem;
  padding:18px 0;
}
.footer-bottom a{color:var(--glow)}

/* Responsive */
@media (max-width:1199px){
  .stat-cell{padding-inline:14px}
}
@media (max-width:991.98px){
  .content-main{margin-left:0}
  .site-sidebar{
    transform:translateX(-108%);
    background:rgba(16,28,44,.96);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
  }
  .mobile-topbar{display:flex}
  .content-main{padding-top:64px}
  .intro-grid,.scene-grid,.path-wrap,.faq-layout,.cta-grid{grid-template-columns:1fr;gap:40px}
  .intro-media{order:1}
  .intro-copy{order:2}
  .footer-layout{grid-template-columns:1fr 1fr;gap:30px}
  .footer-bottom-inner{flex-direction:column;align-items:flex-start}
  .scene-media-card{max-width:720px}
}
@media (max-width:767px){
  .content-k{width:min(100% - 32px,1180px)}
  .stat-strip{grid-template-columns:1fr 1fr;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .stat-cell:nth-child(2){border-right:0}
  .stat-cell{border-top:1px solid var(--line);padding:22px 12px}
  .feature-grid{grid-template-columns:1fr}
  .feature-card.large{grid-row:auto}
  .hero-section{min-height:calc(100vh - 64px)}
  .hero-actions .btn-k{flex:1 1 45%;white-space:nowrap}
  .footer-layout{grid-template-columns:1fr;gap:28px}
  .contact-panel{padding:22px 18px}
  .content-main>.hero-section{min-height:88vh}
}
@media (max-width:575px){
  .hero-actions{display:flex;flex-direction:column}
  .hero-actions .btn-k{width:100%;white-space:normal}
  .hero-section h1{font-size:clamp(2rem,9vw,3rem)}
  .side-nav a{font-size:.9rem}
  .step-item{grid-template-columns:48px 1fr;gap:12px}
  .scene-item{gap:14px}
  .scene-num{flex-basis:40px}
  .stat-grid{grid-template-columns:1fr 1fr}
  .footer-collapse{display:block}
  .btn-k{padding:.8rem 1.2rem}
}