/* roulang page: index */
:root {
  --bg-deep: #070B14;
  --bg-panel: #0D1626;
  --surface-glass: rgba(255,255,255,0.04);
  --stroke-glass: rgba(255,255,255,0.10);
  --stroke-strong: rgba(160,200,255,0.28);
  --blue-band: #3D7EFF;
  --cyan-signal: #26D6FF;
  --red-signal: #FF5D6C;
  --text-hi: rgba(240,248,255,0.96);
  --text-mid: rgba(180,200,228,0.82);
  --text-low: rgba(140,160,190,0.60);
  --radius-lg: 20px;
  --radius-card: 16px;
  --radius-badge: 999px;
  --font-main: "PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",system-ui,-apple-system,sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-deep);
  color: var(--text-hi);
  font-family: var(--font-main);
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
body::before,
body::after {
  content: "";
  position: fixed;
  width: 520px;
  height: 520px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.9;
}
body::before {
  left: -140px;
  top: -140px;
  background: radial-gradient(circle, rgba(50,110,255,0.20), transparent 68%);
}
body::after {
  right: -100px;
  bottom: -100px;
  background: radial-gradient(circle, rgba(0,200,240,0.09), transparent 68%);
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button, input, summary { font-family: inherit; }
h1, h2, h3, p, figure, blockquote { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--cyan-signal);
  outline-offset: 3px;
  border-radius: 12px;
}

.container-page {
  width: min(1200px, 100%);
  margin: 0 auto;
  padding-left: 28px;
  padding-right: 28px;
}

.page-shell {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  min-height: 100vh;
  position: relative;
  z-index: 1;
}
.side-rail {
  position: sticky;
  top: 0;
  height: 100vh;
  width: 96px;
  background: rgba(7,11,20,0.88);
  border-right: 1px solid rgba(255,255,255,0.06);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 60;
}
.rail-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  padding: 26px 0 18px;
  flex: 1;
}
.brand-lockup {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}
.brand-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  background: linear-gradient(160deg, rgba(255,255,255,0.12), rgba(255,255,255,0.03));
  border: 1px solid rgba(160,200,255,0.25);
  box-shadow: 0 0 22px rgba(60,140,255,0.25), inset 0 1px 0 rgba(255,255,255,0.13);
  font-size: 25px;
  font-weight: 800;
  color: var(--text-hi);
  line-height: 1;
}
.brand-text {
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.4px;
  text-align: center;
  color: var(--text-mid);
}
.rail-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  padding: 0 6px;
}
.rail-link {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  height: 58px;
  border-radius: 14px;
  color: var(--text-low);
  transition: all .22s ease;
  font-size: 11px;
  line-height: 1.25;
  text-align: center;
}
.rail-link i {
  font-size: 17px;
}
.rail-link:hover {
  color: var(--text-hi);
  background: rgba(255,255,255,0.05);
  transform: scale(1.03);
}
.rail-link.active {
  color: var(--cyan-signal);
  background: rgba(38,214,255,0.06);
}
.rail-link.active::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 22%;
  height: 56%;
  width: 3px;
  border-radius: 999px;
  background: var(--cyan-signal);
  box-shadow: 0 0 14px rgba(38,214,255,.55);
}
.rail-bottom {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}
.rail-bottom-btn {
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid var(--stroke-glass);
  background: rgba(255,255,255,0.04);
  color: var(--text-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .25s ease;
  font-size: 15px;
}
.rail-bottom-btn:hover {
  color: var(--cyan-signal);
  border-color: var(--stroke-strong);
  transform: rotate(90deg);
}
.main-root {
  min-width: 0;
  position: relative;
  background-image:
    radial-gradient(circle at 70% 0%, rgba(40,80,160,0.07), transparent 30%),
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: auto, 42px 42px, 42px 42px;
  background-position: center, top left, top left;
}
.main-root > section {
  position: relative;
  z-index: 2;
}

.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  height: 60px;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  background: rgba(7,11,20,0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  z-index: 80;
}
.mobile-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16px;
}
.mobile-brand .brand-icon {
  width: 34px;
  height: 34px;
  font-size: 17px;
  border-radius: 10px;
  box-shadow: 0 0 16px rgba(60,140,255,0.28);
}
.mobile-menu-btn {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--stroke-glass);
  background: rgba(255,255,255,0.04);
  color: var(--text-hi);
  font-size: 17px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mobile-drawer {
  display: none;
}
.mobile-drawer.open {
  display: flex;
  flex-direction: column;
  position: fixed;
  inset: 0;
  background: rgba(7,11,20,0.97);
  backdrop-filter: blur(26px);
  -webkit-backdrop-filter: blur(26px);
  z-index: 90;
  padding: 84px 24px 34px;
  overflow-y: auto;
}
.drawer-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  padding: 0 18px;
}
.m-drawer-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  margin-bottom: 8px;
  border-radius: 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid transparent;
  color: var(--text-mid);
  font-size: 16px;
  transition: all .2s ease;
}
.m-drawer-link i {
  width: 22px;
  color: var(--text-low);
}
.m-drawer-link.active {
  color: var(--cyan-signal);
  border-color: rgba(38,214,255,0.25);
  background: rgba(38,214,255,0.06);
}
.m-drawer-link.active i { color: var(--cyan-signal); }

.hero-section {
  min-height: calc(100vh - 0px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  padding: 72px 0 44px;
}
.hero-section .container-page {
  display: grid;
  grid-template-columns: 46% 1fr;
  gap: 56px;
  align-items: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.42;
  z-index: -2;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(7,11,20,0.72) 0%, rgba(7,11,20,0.42) 44%, rgba(7,11,20,0.86) 100%);
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px;
  border-radius: 999px;
  border: 1px solid rgba(38,214,255,0.24);
  background: rgba(38,214,255,0.07);
  color: var(--cyan-signal);
  font-size: 13px;
  letter-spacing: 0.2px;
  margin-bottom: 20px;
}
.hero-section h1 {
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.6px;
  color: #F5FAFF;
  margin: 0 0 24px;
}
.hero-section .hero-sub {
  font-size: 17px;
  color: var(--text-mid);
  max-width: 46ch;
  line-height: 1.85;
  margin-bottom: 34px;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}
.hero-anchors {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.anchor-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--stroke-glass);
  background: rgba(255,255,255,0.04);
  color: var(--text-mid);
  font-size: 13px;
  transition: all .2s ease;
}
.anchor-badge:hover {
  color: var(--text-hi);
  border-color: var(--stroke-strong);
  transform: translateY(-2px);
  background: rgba(255,255,255,0.07);
}
.hero-visual {
  max-width: 320px;
  margin-left: auto;
  position: relative;
}
.cover-card {
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--stroke-glass);
  background: linear-gradient(160deg, rgba(255,255,255,0.10), rgba(255,255,255,0.02));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 12px;
  box-shadow: 0 28px 70px rgba(0,10,30,0.45), inset 0 1px 0 rgba(255,255,255,0.10);
}
.cover-card-img {
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  position: relative;
}
.cover-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cover-card-body {
  padding: 14px 8px 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.cover-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-hi);
}
.cover-index {
  font-size: 13px;
  color: var(--cyan-signal);
}
.cover-status {
  padding: 8px 10px;
  font-size: 12px;
  color: var(--text-mid);
  display: flex;
  align-items: center;
  gap: 8px;
}
.cover-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--cyan-signal);
  box-shadow: 0 0 10px var(--cyan-signal);
  animation: pulse 1.8s infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; }
  50% { opacity: 0.35; }
}
.glass-card {
  background: linear-gradient(160deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  border: 1px solid var(--stroke-glass);
  border-radius: var(--radius-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: all .3s ease;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06);
}
.glass-card:hover {
  border-color: var(--stroke-strong);
  box-shadow: 0 18px 50px rgba(0,10,30,0.4), inset 0 1px 0 rgba(255,255,255,0.08);
}
.section {
  padding: 72px 0;
}
.section-tight {
  padding: 48px 0;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 40px;
}
.section-title-wrap h2 {
  font-size: 30px;
  line-height: 1.3;
  font-weight: 700;
  color: #EDF4FF;
  margin: 0;
  position: relative;
  padding-left: 18px;
}
.section-title-wrap h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  width: 5px;
  height: 26px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--blue-band), var(--cyan-signal));
  box-shadow: 0 0 14px rgba(38,214,255,0.35);
}
.section-sub {
  color: var(--text-low);
  font-size: 15px;
  margin-top: 12px;
}
.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 13px;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 26px;
  transition: all .3s ease;
  border: none;
  cursor: pointer;
  line-height: 1.2;
}
.btn-primary {
  color: #061324;
  background: linear-gradient(135deg, #3D7EFF, #26D6FF);
  box-shadow: 0 0 24px rgba(60,140,255,0.33);
}
.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 40px rgba(60,140,255,0.5);
  transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(1px); }
.btn-ghost {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--stroke-glass);
  color: var(--text-hi);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  border-color: var(--stroke-strong);
  background: rgba(255,255,255,0.08);
  transform: translateY(-1px);
}
.btn-sm {
  padding: 8px 14px;
  font-size: 13px;
}
.btn-red-ghost {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  border-radius: 11px;
  border: 1px solid rgba(255,93,108,0.28);
  background: rgba(255,93,108,0.06);
  color: #FFB7BE;
  font-size: 13px;
  cursor: pointer;
  transition: all .25s ease;
}
.btn-red-ghost:hover {
  border-color: rgba(255,93,108,0.55);
  background: rgba(255,93,108,0.10);
  color: #FFD7DA;
}

.directory-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 36px;
}
.mini-tile-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.mini-tile {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 16px 14px;
  min-height: 76px;
  transition: all .23s ease;
}
.mini-tile:hover {
  transform: translateY(-2px);
}
.tile-num {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  color: var(--cyan-signal);
  background: rgba(38,214,255,0.07);
  border: 1px solid rgba(38,214,255,0.2);
  box-shadow: 0 0 16px rgba(38,214,255,0.12);
  flex-shrink: 0;
}
.tile-info {
  flex: 1;
  min-width: 0;
}
.tile-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-hi);
  line-height: 1.4;
}
.tile-desc {
  font-size: 12px;
  color: var(--text-low);
  margin-top: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tile-arrow {
  color: var(--text-low);
  font-size: 13px;
  flex-shrink: 0;
}
.mini-tile:hover .tile-arrow { color: var(--cyan-signal); transform: translateX(3px); transition: all .2s; }

.step-panel {
  position: relative;
  padding: 10px 0 10px 26px;
}
.step-panel::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 32px;
  bottom: 32px;
  width: 1px;
  background: linear-gradient(180deg, rgba(38,214,255,0.5), rgba(61,126,255,0.05));
}
.step-node {
  position: relative;
  padding: 13px 16px;
  border-radius: 16px;
  margin-bottom: 14px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--stroke-glass);
  transition: all .25s ease;
}
.step-node::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 24px;
  width: 11px;
  height: 11px;
  border-radius: 999px;
  background: var(--cyan-signal);
  box-shadow: 0 0 12px rgba(38,214,255,0.5);
}
.step-node:hover {
  border-color: var(--stroke-strong);
  background: rgba(38,214,255,0.04);
}
.step-node-label {
  font-size: 13px;
  color: var(--cyan-signal);
  font-weight: 600;
  margin-bottom: 4px;
}
.step-node-title {
  font-size: 16px;
  color: var(--text-hi);
  font-weight: 600;
  margin-bottom: 6px;
}
.step-node-text {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.7;
}

.featured-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 20px;
}
.featured-main-card {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  min-height: 360px;
  display: flex;
  align-items: flex-end;
  background: linear-gradient(180deg, rgba(13,22,38,0.1), rgba(7,11,20,0.4));
}
.featured-main-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
}
.featured-main-body {
  width: 100%;
  padding: 32px;
  background: linear-gradient(180deg, transparent, rgba(7,11,20,0.92) 70%);
}
.badge {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(38,214,255,0.12);
  border: 1px solid rgba(38,214,255,0.2);
  color: var(--cyan-signal);
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 12px;
}
.badge-red {
  background: rgba(255,93,108,0.12);
  border-color: rgba(255,93,108,0.24);
  color: #FFAAB2;
}
.featured-title {
  font-size: 22px;
  line-height: 1.5;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}
.featured-excerpt {
  font-size: 14px;
  color: rgba(215,230,250,0.78);
  line-height: 1.7;
  max-width: 52ch;
  margin-bottom: 14px;
}
.featured-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: rgba(190,210,240,0.6);
}
.link-line {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-weight: 600;
  color: var(--cyan-signal);
}
.link-line:hover { color: #70E5FF; }
.link-line i { font-size: 12px; }
.featured-side {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.mini-feature-card {
  flex: 1;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all .25s ease;
  border: 1px solid var(--stroke-glass);
  border-radius: 18px;
  background: linear-gradient(160deg, rgba(255,255,255,0.07), rgba(255,255,255,0.02));
  min-height: 174px;
}
.mini-feature-card:hover {
  border-color: var(--stroke-strong);
  transform: translateY(-2px);
}
.mini-feature-src {
  font-size: 12px;
  color: var(--text-low);
}
.mini-feature-card h3 {
  font-size: 17px;
  line-height: 1.5;
  font-weight: 600;
  color: var(--text-hi);
}
.mini-feature-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-low);
  font-size: 13px;
}

.recommend-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.recommend-row {
  display: grid;
  grid-template-columns: 64px minmax(0,1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--stroke-glass);
  background: rgba(255,255,255,0.025);
  transition: all .22s ease;
}
.recommend-row:hover {
  border-color: var(--stroke-strong);
  background: rgba(255,255,255,0.05);
  transform: translateX(4px);
}
.recommend-thumb {
  width: 64px;
  height: 58px;
  border-radius: 10px;
  overflow: hidden;
  position: relative;
  background: rgba(255,255,255,0.04);
}
.recommend-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.recommend-main {
  min-width: 0;
}
.recommend-cat {
  display: inline-block;
  font-size: 11px;
  color: var(--cyan-signal);
  margin-bottom: 3px;
}
.recommend-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-hi);
  line-height: 1.5;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.recommend-side {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: var(--text-low);
  white-space: nowrap;
}
.recommend-side .go-link {
  color: var(--cyan-signal);
}

.status-block {
  border-radius: 22px;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--stroke-glass);
  background: linear-gradient(160deg, rgba(255,255,255,0.06), rgba(255,255,255,0.01));
  backdrop-filter: blur(12px);
  padding: 48px 44px;
}
.status-block::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-2.webp");
  background-size: cover;
  opacity: 0.1;
  z-index: -1;
}
.status-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 22px;
}
.status-item {
  text-align: center;
  padding: 14px 8px;
}
.status-value {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -1px;
  background: linear-gradient(135deg, #fff, #a8c7ff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
  margin-bottom: 8px;
}
.status-label {
  font-size: 14px;
  color: var(--text-mid);
}

.cms-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.cms-card {
  padding: 18px 20px;
  border-radius: 16px;
  background: linear-gradient(160deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border: 1px solid var(--stroke-glass);
  transition: all .22s ease;
}
.cms-card:hover {
  border-color: var(--stroke-strong);
  box-shadow: 0 12px 38px rgba(0,10,30,0.35);
}
.cms-card-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.cms-cat {
  display: inline-block;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(38,214,255,0.09);
  border: 1px solid rgba(38,214,255,0.18);
  color: var(--cyan-signal);
}
.cms-time {
  font-size: 13px;
  color: var(--text-low);
}
.cms-title {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-hi);
}
.cms-title a:hover { color: var(--cyan-signal); }
.cms-card:hover .cms-arrow { transform: translateX(4px); color: var(--cyan-signal); }
.cms-empty {
  min-height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border-radius: 20px;
  border: 1px dashed rgba(255,255,255,0.16);
  color: var(--text-mid);
}
.cms-empty-icon {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--stroke-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: rgba(255,255,255,0.3);
  margin-bottom: 14px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 100%;
}
.faq-item {
  border: 1px solid var(--stroke-glass);
  border-radius: 16px;
  background: rgba(255,255,255,0.025);
  overflow: hidden;
  transition: all .25s ease;
}
.faq-item[open] {
  border-color: rgba(38,214,255,0.28);
  background: rgba(38,214,255,0.03);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  cursor: pointer;
  padding: 18px 20px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-hi);
  gap: 16px;
  transition: color .2s ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .faq-icon {
  position: relative;
  width: 22px;
  height: 22px;
  border-radius: 7px;
  border: 1px solid var(--stroke-strong);
  flex-shrink: 0;
  transition: transform .3s ease, border-color .3s ease;
}
.faq-item summary .faq-icon::before,
.faq-item summary .faq-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 11px;
  height: 1px;
  background: var(--cyan-signal);
  transform: translate(-50%,-50%);
  transition: transform .3s ease;
}
.faq-item summary .faq-icon::after {
  transform: translate(-50%,-50%) rotate(90deg);
}
.faq-item[open] summary .faq-icon { transform: rotate(45deg); border-color: var(--cyan-signal); }
.faq-item[open] summary .faq-icon::after { transform: translate(-50%,-50%) rotate(0deg); }
.faq-item .faq-answer {
  padding: 0 20px 20px;
  color: var(--text-mid);
  font-size: 15px;
  line-height: 1.85;
}
.faq-item .faq-answer p { margin-bottom: 8px; }

.cta-band {
  position: relative;
  overflow: hidden;
  border-radius: 22px;
  border: 1px solid var(--stroke-glass);
  background: linear-gradient(160deg, rgba(255,255,255,0.09), rgba(255,255,255,0.02));
  backdrop-filter: blur(14px);
  padding: 40px 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.cta-band::before {
  content: "";
  position: absolute;
  right: -40px;
  top: -60px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(61,126,255,0.16), transparent 66%);
  z-index: -1;
}
.cta-mark {
  position: absolute;
  right: 18px;
  top: 18px;
  color: var(--red-signal);
  font-size: 18px;
  opacity: 0.6;
}
.cta-title {
  font-size: 23px;
  font-weight: 700;
  color: #F5FAFF;
  margin-bottom: 8px;
  padding-right: 30px;
}
.cta-sub {
  font-size: 14px;
  color: var(--text-mid);
}
.cta-btn-group {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  background: rgba(4,8,16,0.7);
  margin-top: 36px;
  padding: 56px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.1fr 0.9fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-hi);
}
.footer-brand small { display: block; font-size: 13px; font-weight: 400; color: var(--text-low); margin-top: 6px; }
.footer-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-hi);
  margin-bottom: 14px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
  color: var(--text-mid);
}
.footer-links a { transition: color .2s; }
.footer-links a:hover { color: var(--cyan-signal); }
.footer-copyright {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 22px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-low);
  text-align: center;
}

.scroll-btn-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid var(--stroke-glass);
  background: rgba(255,255,255,0.04);
  color: var(--text-mid);
  font-size: 15px;
  cursor: pointer;
  transition: all .25s ease;
}
.scroll-btn-placeholder:hover {
  color: var(--cyan-signal);
  transform: translateY(-3px);
  border-color: var(--stroke-strong);
}

@media (max-width: 1023.98px) {
  .page-shell { display: block; }
  .side-rail { display: none; }
  .mobile-header { display: flex; }
  .mobile-drawer.open { display: flex; }
  .hero-section { min-height: auto; padding: 60px 0 52px; }
  .hero-section .container-page { grid-template-columns: 1fr; gap: 42px; }
  .hero-visual { margin-left: 0; max-width: 100%; }
  .cover-card { max-width: 360px; }
  .main-root { background-size: auto; }
  .directory-grid { grid-template-columns: 1fr; gap: 28px; }
  .featured-grid { grid-template-columns: 1fr; }
  .status-grid { grid-template-columns: repeat(2,1fr); }
  .cta-band { flex-direction: column; }
  .cta-btn-group { justify-content: flex-start; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 767.98px) {
  .section { padding: 48px 0; }
  .section-title-wrap h2 { font-size: 24px; }
  .container-page { padding-left: 18px; padding-right: 18px; }
  .hero-section { padding: 40px 0 44px; }
  .hero-section h1 { font-size: 32px; }
  .hero-section .hero-sub { font-size: 15px; }
  .mini-tile-grid { grid-template-columns: 1fr; }
  .recommend-row { grid-template-columns: 56px minmax(0,1fr); align-items: flex-start; }
  .recommend-thumb { width: 56px; height: 48px; }
  .recommend-side { display: none; }
  .status-block { padding: 36px 20px; }
  .status-value { font-size: 28px; }
  .cta-band { padding: 28px 22px; }
  .cta-title { font-size: 20px; padding-right: 0;}
  .page-footer-grid .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 479.98px) {
  .hero-cta .btn-primary,
  .hero-cta .btn-ghost { width: 100%; }
  .anchor-badge { width: 100%; justify-content: center; }
  .mini-feature-card { min-height: 150px; }
  .cover-card { max-width: none; }
}

/* roulang page: category1 */
:root {
      --bg-deep: #070B14;
      --bg-panel: #0D1626;
      --surface-glass: rgba(255, 255, 255, 0.04);
      --stroke-glass: rgba(255, 255, 255, 0.10);
      --stroke-strong: rgba(160, 200, 255, 0.28);
      --blue-band: #3D7EFF;
      --cyan-signal: #26D6FF;
      --red-signal: #FF5D6C;
      --text-hi: rgba(240, 248, 255, 0.96);
      --text-mid: rgba(180, 200, 228, 0.82);
      --text-low: rgba(140, 160, 190, 0.60);
      --card-radius: 16px;
      --panel-radius: 20px;
      --shadow-card: 0 18px 50px rgba(0, 10, 30, 0.4);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, sans-serif;
      background: var(--bg-deep);
      color: var(--text-mid);
      line-height: 1.85;
      display: grid;
      grid-template-columns: 96px 1fr;
      min-height: 100vh;
      overflow-x: hidden;
    }
    body::before {
      content: "";
      position: fixed;
      width: 600px;
      height: 600px;
      left: -160px;
      top: -160px;
      background: radial-gradient(circle, rgba(50, 110, 255, 0.18), transparent 70%);
      pointer-events: none;
      z-index: 0;
      filter: blur(60px);
    }
    body::after {
      content: "";
      position: fixed;
      width: 500px;
      height: 500px;
      right: -140px;
      bottom: -100px;
      background: radial-gradient(circle, rgba(0, 200, 240, 0.08), transparent 70%);
      pointer-events: none;
      z-index: 0;
      filter: blur(100px);
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    img {
      max-width: 100%;
      display: block;
    }
    button {
      font-family: inherit;
    }

    .rail-nav {
      position: fixed;
      left: 0;
      top: 0;
      bottom: 0;
      width: 96px;
      background: rgba(7, 11, 20, 0.9);
      backdrop-filter: blur(20px);
      border-right: 1px solid var(--stroke-glass);
      display: flex;
      flex-direction: column;
      align-items: center;
      z-index: 50;
      padding: 22px 0 18px;
    }
    .rail-logo {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      background: linear-gradient(145deg, rgba(61, 126, 255, 0.3), rgba(38, 214, 255, 0.12));
      border: 1px solid rgba(160, 200, 255, 0.25);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      font-weight: 800;
      color: #fff;
      box-shadow: 0 0 22px rgba(60, 140, 255, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.12);
      margin-bottom: 10px;
      letter-spacing: -1px;
    }
    .rail-brand-text {
      color: var(--text-hi);
      font-size: 12px;
      font-weight: 700;
      text-align: center;
      line-height: 1.4;
      letter-spacing: 1px;
      margin-bottom: 26px;
      padding: 0 2px;
    }
    .rail-nav {
      padding-top: 18px;
    }
    .rail-nav .rail-link {
      width: 74px;
      padding: 10px 4px;
      border-radius: 10px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
      font-size: 12px;
      line-height: 1.3;
      color: var(--text-mid);
      text-align: center;
      transition: background 0.25s, color 0.25s, transform 0.2s;
      position: relative;
      margin-bottom: 4px;
    }
    .rail-nav .rail-link i {
      font-size: 17px;
      height: 22px;
    }
    .rail-nav .rail-link span {
      font-size: 11px;
      line-height: 1.25;
    }
    .rail-nav .rail-link:hover {
      background: rgba(255, 255, 255, 0.05);
      color: var(--text-hi);
      transform: scale(1.04);
      border: none;
    }
    .rail-nav .rail-link.active {
      color: var(--cyan-signal);
      background: rgba(38, 214, 255, 0.07);
    }
    .rail-nav .rail-link.active::before {
      content: "";
      position: absolute;
      left: -9px;
      top: 28%;
      height: 40%;
      width: 2px;
      background: var(--cyan-signal);
      box-shadow: 0 0 8px rgba(38, 214, 255, 0.7);
      border-radius: 3px;
    }

    .main-content {
      grid-column: 2;
      position: relative;
      z-index: 1;
      min-height: 100vh;
      width: 100%;
    }
    .main-content::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 80px;
      background-image: linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
      background-size: 64px 64px;
      pointer-events: none;
      opacity: 0.6;
    }

    .container-page {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 40px;
    }

    .content-wrap {
      padding-top: 48px;
    }

    /* ======= Category 1 Page: Left Split / Right Visual ======= */
    .cat-hero {
      padding: 36px 0 28px;
    }
    .cat-breadcrumb {
      font-size: 13px;
      color: var(--text-low);
      letter-spacing: 0.3px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 6px;
      margin-bottom: 18px;
    }
    .cat-breadcrumb a:hover {
      color: var(--cyan-signal);
    }
    .cat-breadcrumb .sep {
      color: rgba(140, 160, 190, 0.4);
      font-size: 12px;
    }
    .cat-breadcrumb .current {
      color: var(--text-low);
      font-weight: 500;
    }
    .cat-hero-title {
      font-size: 42px;
      font-weight: 800;
      color: var(--text-hi);
      line-height: 1.2;
      letter-spacing: -0.3px;
      margin-bottom: 12px;
      display: flex;
      align-items: flex-start;
      gap: 16px;
    }
    .cat-hero-title i {
      color: var(--cyan-signal);
      font-size: 30px;
      margin-top: 7px;
    }
    .cat-hero-sub {
      font-size: 16px;
      color: var(--text-mid);
      max-width: 56ch;
      line-height: 1.9;
    }

    .cat-section-a {
      display: grid;
      grid-template-columns: 42% 58%;
      gap: 28px;
      margin: 36px 0 44px;
      align-items: start;
    }

    .directory-panel {
      background: linear-gradient(160deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02));
      backdrop-filter: blur(14px);
      border: 1px solid var(--stroke-glass);
      border-radius: var(--panel-radius);
      padding: 28px 26px;
      position: relative;
    }
    .directory-panel::before {
      content: "";
      position: absolute;
      top: 0;
      left: 18px;
      right: 18px;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
    }
    .directory-title {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13px;
      color: var(--text-low);
      letter-spacing: 2px;
      text-transform: uppercase;
      padding-bottom: 18px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.07);
      margin-bottom: 18px;
      font-weight: 600;
    }
    .directory-title span:last-child {
      color: var(--cyan-signal);
      font-size: 11px;
      border: 1px solid rgba(38, 214, 255, 0.3);
      padding: 2px 10px;
      border-radius: 999px;
    }
    .directory-list {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .directory-item {
      display: grid;
      grid-template-columns: 36px 1fr auto;
      align-items: center;
      gap: 12px;
      padding: 14px 12px;
      border-radius: 10px;
      background: rgba(255, 255, 255, 0.025);
      border: 1px solid transparent;
      text-align: left;
      width: 100%;
      transition: background 0.25s, border-color 0.25s, transform 0.2s;
      cursor: default;
    }
    .directory-item:hover {
      background: rgba(255, 255, 255, 0.05);
      border-color: rgba(160, 200, 255, 0.18);
      transform: translateX(4px);
    }
    .directory-num {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: rgba(61, 126, 255, 0.16);
      border: 1px solid rgba(61, 126, 255, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: var(--cyan-signal);
      font-size: 15px;
      box-shadow: 0 0 14px rgba(38, 214, 255, 0.12);
    }
    .directory-item h3 {
      font-size: 16px;
      font-weight: 600;
      color: var(--text-hi);
      line-height: 1.4;
    }
    .directory-item p {
      font-size: 13px;
      color: var(--text-mid);
      grid-column: 2 / 3;
    }
    .directory-arrow {
      color: var(--text-low);
      font-size: 14px;
    }
    .directory-item:hover .directory-arrow {
      color: var(--cyan-signal);
      transform: translateX(3px);
    }
    .directory-foot {
      margin-top: 16px;
      padding-top: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13px;
    }
    .directory-foot .note {
      color: var(--text-low);
    }
    .directory-foot .status {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      color: #55ed97;
    }
    .directory-foot .status i {
      font-size: 8px;
    }

    .guide-main-card {
      background: linear-gradient(160deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.015));
      backdrop-filter: blur(14px);
      border: 1px solid var(--stroke-glass);
      border-radius: var(--panel-radius);
      padding: 0;
      overflow: hidden;
      position: relative;
    }
    .guide-cover {
      position: relative;
      height: 220px;
      overflow: hidden;
    }
    .guide-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .guide-cover::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(7, 11, 20, 0.2) 0%, rgba(7, 11, 20, 0.1) 50%, rgba(7, 11, 20, 0.85) 100%);
    }
    .guide-cover-tag {
      position: absolute;
      left: 18px;
      bottom: 16px;
      z-index: 2;
      background: rgba(7, 11, 20, 0.7);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.18);
      border-radius: 40px;
      padding: 6px 16px;
      font-size: 13px;
      color: var(--text-hi);
      font-weight: 500;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .guide-cover-tag i {
      color: var(--cyan-signal);
    }
    .guide-body {
      padding: 28px 30px 30px;
    }
    .guide-body h2 {
      font-size: 22px;
      font-weight: 700;
      color: var(--text-hi);
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .guide-body h2::before {
      content: "";
      width: 4px;
      height: 18px;
      background: var(--cyan-signal);
      border-radius: 2px;
      box-shadow: 0 0 8px rgba(38, 214, 255, 0.4);
    }
    .guide-body p {
      font-size: 15px;
      color: var(--text-mid);
      line-height: 1.9;
      margin-bottom: 14px;
    }
    .guide-body strong {
      color: var(--text-hi);
      font-weight: 600;
    }

    .guide-tip-block {
      margin-top: 16px;
      background: rgba(38, 214, 255, 0.05);
      border: 1px solid rgba(38, 214, 255, 0.15);
      border-left: 3px solid var(--cyan-signal);
      padding: 18px 20px;
      border-radius: 12px;
    }
    .guide-tip-block .tip-title {
      font-weight: 700;
      color: var(--cyan-signal);
      font-size: 15px;
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .guide-tip-block p {
      margin-bottom: 0;
      font-size: 14px;
    }

    .cat-step-section {
      margin: 64px 0;
    }
    .section-head {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 26px;
    }
    .section-head .bar {
      width: 4px;
      height: 20px;
      background: var(--cyan-signal);
      border-radius: 3px;
      box-shadow: 0 0 12px rgba(38, 214, 255, 0.35);
      display: inline-block;
    }
    .section-head h2 {
      font-size: 26px;
      font-weight: 700;
      color: var(--text-hi);
    }
    .section-head .heading-note {
      font-size: 13px;
      color: var(--text-low);
      margin-left: 8px;
      position: relative;
      top: 3px;
    }

    .process-steps {
      display: flex;
      gap: 16px;
      align-items: stretch;
      margin-top: 20px;
    }
    .process-steps .process-card {
      flex: 1;
      background: linear-gradient(160deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
      backdrop-filter: blur(12px);
      border: 1px solid var(--stroke-glass);
      border-radius: 14px;
      padding: 22px 20px;
      text-align: left;
      transition: border-color 0.3s, box-shadow 0.3s, transform 0.2s;
      display: flex;
      flex-direction: column;
      border-top: 2px solid rgba(255, 255, 255, 0.2);
    }
    .process-steps .process-card:hover {
      border-color: var(--stroke-strong);
      box-shadow: var(--shadow-card);
      transform: translateY(-3px);
    }
    .process-card .step-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 10px;
    }
    .process-card .step-num {
      font-size: 13px;
      font-weight: 700;
      color: var(--cyan-signal);
      background: rgba(38, 214, 255, 0.1);
      border: 1px solid rgba(38, 214, 255, 0.15);
      padding: 2px 10px;
      border-radius: 999px;
    }
    .process-card h3 {
      color: var(--text-hi);
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .process-card p {
      font-size: 14px;
      color: var(--text-mid);
      line-height: 1.75;
      margin-bottom: 12px;
    }

    .cat-feature-panel {
      margin: 0 0 60px;
      background: rgba(13, 22, 38, 0.6);
      backdrop-filter: blur(16px);
      border: 1px solid var(--stroke-glass);
      border-radius: var(--panel-radius);
      overflow: hidden;
      padding: 0;
    }
    .cat-feature-inner {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 0;
      position: relative;
    }
    .cat-feature-copy {
      padding: 36px 38px;
    }
    .cat-feature-copy h2 {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-hi);
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .cat-feature-copy h2::before {
      content: "";
      width: 4px;
      height: 18px;
      background: var(--blue-band);
      border-radius: 2px;
      box-shadow: 0 0 10px rgba(61, 126, 255, 0.4);
    }
    .cat-feature-copy p {
      font-size: 15px;
      color: var(--text-mid);
      line-height: 1.9;
      margin-bottom: 14px;
    }
    .cat-feature-copy ul {
      list-style: none;
      margin: 18px 0;
    }
    .cat-feature-copy ul li {
      padding: 9px 0;
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      color: var(--text-mid);
      border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
    }
    .cat-feature-copy ul li:last-child {
      border-bottom: none;
    }
    .cat-feature-copy ul li i {
      color: var(--cyan-signal);
      width: 20px;
      text-align: center;
      font-size: 13px;
    }
    .cat-feature-media {
      position: relative;
      background-size: cover;
      background-position: center;
      display: flex;
      align-items: flex-end;
      padding: 28px;
      background-image: linear-gradient(160deg, rgba(7, 11, 20, 0.35), rgba(7, 11, 20, 0.7)), url('/assets/images/backpic/back-1.webp');
      background-color: #0d1626;
    }
    .cat-feature-media .widget-note {
      background: rgba(7, 11, 20, 0.65);
      backdrop-filter: blur(14px);
      border: 1px solid rgba(255, 255, 255, 0.14);
      border-radius: 14px;
      padding: 18px 22px;
      width: 100%;
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .widget-note i {
      font-size: 28px;
      color: var(--cyan-signal);
      filter: drop-shadow(0 0 10px rgba(38, 214, 255, 0.4));
    }
    .widget-note .widget-title {
      color: var(--text-hi);
      font-weight: 700;
      font-size: 15px;
      margin-bottom: 2px;
    }
    .widget-note .widget-sub {
      color: var(--text-low);
      font-size: 12px;
    }

    .section-label {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--cyan-signal);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 3px;
      margin-bottom: 28px;
      border: 1px solid rgba(38, 214, 255, 0.22);
      padding: 4px 14px;
      border-radius: 999px;
      background: rgba(38, 214, 255, 0.05);
    }
    .section-label i {
      font-size: 11px;
    }

    .channel-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
      margin-bottom: 26px;
    }
    .info-mini-card {
      background: rgba(255, 255, 255, 0.035);
      border: 1px solid var(--stroke-glass);
      border-radius: 14px;
      padding: 22px 22px;
      transition: border-color 0.25s, background 0.25s;
    }
    .info-mini-card:hover {
      border-color: rgba(160, 200, 255, 0.3);
      background: rgba(255, 255, 255, 0.05);
    }
    .info-mini-card i {
      color: var(--cyan-signal);
      font-size: 22px;
      margin-bottom: 10px;
      display: inline-block;
    }
    .info-mini-card h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-hi);
      margin-bottom: 4px;
    }
    .info-mini-card p {
      font-size: 13px;
      color: var(--text-low);
      line-height: 1.7;
    }
    .info-mini-card .nl {
      margin-top: 12px;
      font-size: 13px;
      border-radius: 40px;
      background: rgba(61, 126, 255, 0.15);
      border: 1px solid rgba(61, 126, 255, 0.2);
      padding: 3px 12px;
      color: var(--text-hi);
      display: inline-block;
    }

    /* ===== Story Panel ===== */
    .story-section {
      margin-bottom: 56px;
    }
    .story-grid {
      display: grid;
      grid-template-columns: 52% 44%;
      gap: 24px;
    }
    .story-a {
      height: 260px;
      background-image: linear-gradient(200deg, rgba(7, 11, 20, 0.5), rgba(7, 11, 20, 0.3)), url('/assets/images/coverpic/cover-4.png');
      background-size: cover;
      background-position: center;
      border-radius: var(--panel-radius);
      border: 1px solid var(--stroke-glass);
      position: relative;
      display: flex;
      align-items: flex-end;
      overflow: hidden;
      transition: box-shadow 0.4s;
    }
    .story-a::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(200deg, transparent 30%, rgba(7, 11, 20, 0.88) 100%);
    }
    .story-copy {
      position: relative;
      z-index: 3;
      padding: 26px;
    }
    .story-copy .tag-chip {
      color: #fff;
      background: rgba(38, 214, 255, 0.6);
      backdrop-filter: blur(6px);
      font-size: 12px;
      font-weight: 600;
      padding: 3px 12px;
      border-radius: 20px;
    }
    .story-copy h3 {
      color: #fff;
      font-size: 22px;
      font-weight: 700;
      margin: 12px 0 6px;
      line-height: 1.4;
    }
    .story-copy span {
      color: rgba(240, 248, 255, 0.8);
      font-size: 13px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .story-b {
      background: linear-gradient(160deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
      backdrop-filter: blur(14px);
      border: 1px solid var(--stroke-glass);
      border-radius: var(--panel-radius);
      padding: 30px;
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      justify-content: center;
    }
    .story-b h3 {
      font-size: 22px;
      color: var(--text-hi);
      margin-bottom: 10px;
    }
    .story-b p {
      font-size: 15px;
      margin-bottom: 10px;
    }
    .story-link-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 18px;
    }
    .inline-pill-link {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(160, 200, 255, 0.2);
      color: var(--cyan-signal);
      border-radius: 999px;
      font-size: 13px;
      padding: 6px 16px;
      transition: background 0.2s, border-color 0.2s;
    }
    .inline-pill-link:hover {
      background: rgba(38, 214, 255, 0.12);
      border-color: rgba(38, 214, 255, 0.4);
    }

    /* ===== FAQ ===== */
    .faq-section {
      margin-bottom: 64px;
    }
    .faq-panel {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: linear-gradient(160deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.015));
      backdrop-filter: blur(12px);
      border: 1px solid var(--stroke-glass);
      border-radius: 12px;
      overflow: hidden;
      transition: border-color 0.3s;
    }
    .faq-item:hover {
      border-color: rgba(160, 200, 255, 0.22);
    }
    .faq-item summary {
      list-style: none;
      cursor: pointer;
      padding: 18px 26px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-hi);
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-item[open] summary {
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .faq-icon {
      width: 20px;
      height: 20px;
      position: relative;
      flex: 0 0 20px;
    }
    .faq-icon::before,
    .faq-icon::after {
      content: "";
      position: absolute;
      background: var(--cyan-signal);
      transition: all 0.25s ease;
    }
    .faq-icon::before {
      top: 9px;
      left: 0;
      width: 20px;
      height: 2px;
    }
    .faq-icon::after {
      top: 0;
      left: 9px;
      width: 2px;
      height: 20px;
    }
    .faq-item[open] .faq-icon::after {
      transform: rotate(90deg);
      opacity: 0;
    }
    .faq-content {
      padding: 14px 26px 22px;
      font-size: 15px;
      color: var(--text-mid);
      background: rgba(7, 11, 20, 0.2);
      line-height: 1.9;
    }

    /* ===== CTA ===== */
    .cta-panel {
      background: linear-gradient(160deg, rgba(38, 214, 255, 0.1), rgba(61, 126, 255, 0.05));
      border: 1px solid rgba(160, 200, 255, 0.28);
      border-radius: 18px;
      padding: 0;
      overflow: hidden;
      position: relative;
      display: flex;
      flex-direction: column;
    }
    .cta-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 34px 38px;
      gap: 24px;
      flex-wrap: wrap;
    }
    .cta-copy h3 {
      color: #fff;
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .cta-copy p {
      color: var(--text-mid);
      font-size: 15px;
      max-width: 44ch;
    }
    .cta-btn-group {
      display: flex;
      gap: 14px;
      align-items: center;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, #3D7EFF, #26D6FF);
      color: #070B14;
      font-weight: 700;
      font-size: 15px;
      padding: 13px 28px;
      border-radius: 10px;
      border: none;
      box-shadow: 0 0 24px rgba(60, 140, 255, 0.35);
      transition: box-shadow 0.2s, transform 0.2s, filter 0.2s;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      line-height: 1;
      white-space: nowrap;
    }
    .btn-primary:hover {
      box-shadow: 0 0 38px rgba(60, 140, 255, 0.5);
      filter: brightness(1.08);
      transform: translateY(-1px);
      color: #070B14;
    }
    .btn-primary:active {
      transform: translateY(1px);
      box-shadow: 0 0 10px rgba(60, 140, 255, 0.3);
    }
    .hero-cta-second {
      background: transparent;
      border: 1px solid var(--stroke-strong);
      color: var(--text-hi);
      padding: 12px 28px;
      font-weight: 600;
      font-size: 15px;
      border-radius: 10px;
      transition: border-color 0.2s, color 0.2s, background 0.2s;
      line-height: 1.2;
      white-space: nowrap;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .hero-cta-second:hover {
      border-color: var(--cyan-signal);
      color: var(--cyan-signal);
      background: rgba(38, 214, 255, 0.06);
    }

    /* ===== Footer ===== */
    .site-footer {
      background: rgba(3, 6, 12, 0.88);
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin-top: 36px;
      padding: 52px 0 26px;
    }
    .site-footer .container-page {
      padding: 0 40px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
      gap: 40px;
      padding-bottom: 36px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .footer-brand {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      line-height: 1.4;
      margin-bottom: 8px;
    }
    .footer-brand small {
      display: block;
      font-size: 13px;
      font-weight: 400;
      color: var(--text-mid);
      margin-top: 10px;
    }
    .footer-title {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-hi);
      margin-bottom: 14px;
      padding-bottom: 6px;
      position: relative;
    }
    .footer-title::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 26px;
      height: 2px;
      background: var(--blue-band);
      border-radius: 2px;
    }
    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links a {
      font-size: 13px;
      color: var(--text-mid);
      transition: color 0.2s, padding-left 0.2s;
    }
    .footer-links a:hover {
      color: var(--cyan-signal);
      padding-left: 4px;
    }
    .footer-copyright {
      padding-top: 26px;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
      font-size: 13px;
      color: var(--text-low);
    }
    .footer-copyright p {
      margin: 2px 0;
    }

    /* ===== Mobile Topnav ===== */
    .mobile-header {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 60px;
      z-index: 60;
      background: rgba(7, 11, 20, 0.92);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--stroke-glass);
      padding: 0 20px;
      align-items: center;
      justify-content: space-between;
    }
    .mobile-logo {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .mobile-logo .mini-box {
      width: 28px;
      height: 28px;
      background: rgba(61, 126, 255, 0.35);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 13px;
      color: #fff;
    }
    .drawer-toggle {
      width: 42px;
      height: 42px;
      border: 1px solid var(--stroke-glass);
      border-radius: 10px;
      background: rgba(255, 255, 255, 0.03);
      color: var(--text-hi);
      font-size: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
    }
    .drawer-panel {
      position: fixed;
      inset: 0;
      background: rgba(5, 8, 16, 0.98);
      backdrop-filter: blur(28px);
      z-index: 70;
      display: none;
      padding: 80px 28px 30px;
      flex-direction: column;
      gap: 6px;
    }
    .drawer-panel.open {
      display: flex;
    }
    .drawer-panel a {
      padding: 18px 22px;
      border-radius: 14px;
      font-size: 18px;
      font-weight: 600;
      color: var(--text-hi);
      display: flex;
      align-items: center;
      gap: 18px;
      border: 1px solid transparent;
    }
    .drawer-panel a:hover {
      background: rgba(255, 255, 255, 0.05);
    }
    .drawer-panel a.active {
      background: rgba(38, 214, 255, 0.08);
      border-color: rgba(38, 214, 255, 0.2);
      color: var(--cyan-signal);
    }
    .drawer-close-btn {
      position: absolute;
      top: 18px;
      right: 20px;
      width: 40px;
      height: 40px;
      border-radius: 50%;
      border: 1px solid var(--stroke-glass);
      background: rgba(255, 255, 255, 0.04);
      color: #fff;
      font-size: 17px;
      font-family: "PingFang SC", sans-serif;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
    }
    .drawer-brand {
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding-bottom: 22px;
      margin-bottom: 18px;
      font-size: 20px;
      color: #fff;
      font-weight: 700;
    }
    .drawer-brand small {
      display: block;
      color: var(--text-low);
      font-size: 13px;
      font-weight: 400;
      margin-top: 4px;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      body {
        grid-template-columns: 1fr;
      }
      .rail-nav {
        display: none;
      }
      .main-content {
        grid-column: 1;
        width: 100%;
      }
      .mobile-header {
        display: flex;
      }
      .content-wrap {
        padding-top: 72px;
      }
      .container-page {
        padding: 0 28px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 900px) {
      .cat-section-a {
        grid-template-columns: 1fr;
      }
      .cat-hero-title {
        flex-wrap: wrap;
      }
    }

    @media (max-width: 768px) {
      .container-page {
        padding: 0 20px;
      }
      .cat-hero-title {
        font-size: 32px;
        line-height: 1.3;
        gap: 10px;
      }
      .cat-hero-title i {
        font-size: 24px;
      }
      .cat-hero-sub {
        font-size: 15px;
      }
      .process-steps {
        flex-direction: column;
      }
      .channel-grid {
        grid-template-columns: 1fr 1fr;
      }
      .cat-feature-inner {
        grid-template-columns: 1fr;
      }
      .cat-feature-media {
        min-height: 220px;
      }
      .story-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }
      .cat-breadcrumb {
        font-size: 12px;
      }
    }

    @media (max-width: 520px) {
      .container-page {
        padding: 0 16px;
      }
      .section-head h2 {
        font-size: 22px;
      }
      .section-head {
        flex-wrap: wrap;
      }
      .channel-grid {
        grid-template-columns: 1fr;
      }
      .btn-primary,
      .hero-cta-second {
        width: 100%;
        justify-content: center;
      }
      .cta-inner {
        padding: 24px 20px;
      }
      .guide-body {
        padding: 22px 18px;
      }
      .directory-panel {
        padding: 22px 16px;
      }
      .footer-copyright {
        flex-direction: column;
      }
      .mobile-header {
        padding: 0 14px;
      }
      .guide-cover {
        height: 180px;
      }
    }

    @media (max-width: 1024px) and (min-width: 769px) {
      .footer-bottom-inner {
        flex-direction: column;
        gap: 16px;
        align-items: center;
      }
    }

/* roulang page: article */
:root {
    --bg-deep: #070B14;
    --bg-panel: #0D1626;
    --glass: rgba(255, 255, 255, 0.045);
    --stroke: rgba(255, 255, 255, 0.10);
    --stroke-strong: rgba(160, 200, 255, 0.30);
    --blue: #3D7EFF;
    --cyan: #26D6FF;
    --red: #FF5D6C;
    --text-hi: rgba(240, 248, 255, 0.96);
    --text-mid: rgba(180, 200, 228, 0.82);
    --text-low: rgba(140, 160, 190, 0.60);
    --radius-lg: 20px;
    --radius-md: 16px;
    --radius-sm: 10px;
    --shadow-card: 0 18px 50px rgba(0, 10, 30, 0.42);
    --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
  }

  * { box-sizing: border-box; }

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

  body {
    margin: 0;
    background: var(--bg-deep);
    color: var(--text-hi);
    font-family: var(--font-stack);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }

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

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

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

  .main-area {
    min-height: 100vh;
    position: relative;
    margin-left: 0;
    background:
      radial-gradient(circle at 14% -4%, rgba(50, 110, 255, 0.17), transparent 34%),
      radial-gradient(circle at 90% 92%, rgba(0, 200, 240, 0.065), transparent 30%);
  }

  @media (min-width: 1024px) {
    .main-area { margin-left: 96px; }
    .main-area::before {
      content: "";
      pointer-events: none;
      position: fixed;
      inset: 0 0 0 96px;
      z-index: 0;
      background-image:
        linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
      background-size: 56px 56px;
      mask-image: linear-gradient(to bottom, rgba(0,0,0,.6), transparent 75%);
    }
  }

  /* ====== 左侧窄栏导航 ====== */
  .rail {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 96px;
    z-index: 50;
    background: rgba(7, 11, 20, 0.88);
    backdrop-filter: blur(18px);
    border-right: 1px solid rgba(160, 200, 255, 0.12);
    display: none;
    flex-direction: column;
    align-items: center;
    padding: 24px 0 18px;
    box-shadow: 12px 0 42px rgba(0, 0, 0, 0.25);
  }

  @media (min-width: 1024px) {
    .rail { display: flex; }
  }

  .rail-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
  }

  .brand-mark {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    font-size: 24px;
    font-weight: 800;
    color: #fff;
    background:
      linear-gradient(160deg, rgba(255,255,255,.14), rgba(255,255,255,.03)),
      rgba(13, 22, 38, .9);
    border: 1px solid rgba(160, 200, 255, 0.35);
    box-shadow:
      inset 0 1px 0 rgba(255,255,255,.35),
      0 0 22px rgba(61, 126, 255, 0.28),
      0 10px 28px rgba(0, 0, 0, 0.35);
    text-shadow: 0 0 18px rgba(38, 214, 255, 0.5);
  }

  .rail-brand-name {
    text-align: center;
    font-size: 11px;
    line-height: 1.5;
    letter-spacing: 0.6px;
    color: var(--text-mid);
    max-width: 68px;
  }

  .rail-nav {
    width: 72px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 7px;
    padding-top: 8px;
  }

  .rail-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 76px;
    border-radius: 16px;
    color: var(--text-mid);
    background: transparent;
    border: 1px solid transparent;
    transition: transform .24s ease, background .24s ease, color .24s ease, border-color .24s ease;
    font-size: 12px;
    text-align: center;
    line-height: 1.35;
    position: relative;
  }

  .rail-link i {
    font-size: 18px;
    color: rgba(160, 190, 230, 0.78);
    transition: transform .24s ease, color .24s ease;
  }

  .rail-link span {
    letter-spacing: 0.2px;
  }

  .rail-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(160, 200, 255, 0.22);
  }

  .rail-link:hover i {
    color: var(--cyan);
    transform: scale(1.08);
  }

  .rail-link.active {
    color: #dff6ff;
    background: linear-gradient(135deg, rgba(61,126,255,.15), rgba(38,214,255,.05));
    border-color: rgba(38, 214, 255, 0.28);
  }

  .rail-link.active::before {
    content: "";
    position: absolute;
    left: -4px;
    top: 16px;
    bottom: 16px;
    width: 2px;
    border-radius: 999px;
    background: var(--cyan);
    box-shadow: 0 0 14px rgba(38, 214, 255, 0.75);
  }

  .rail-link.active i {
    color: var(--cyan);
    text-shadow: 0 0 14px rgba(38, 214, 255, 0.45);
  }

  .rail-footer {
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    width: 56px;
    display: flex;
    justify-content: center;
  }

  .rail-top-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-mid);
    transition: transform .3s ease, border-color .3s ease, color .3s ease;
  }

  .rail-top-btn:hover {
    transform: rotate(-90deg);
    border-color: var(--stroke-strong);
    color: var(--cyan);
  }

  /* ====== 移动端顶部导航 ====== */
  .mobile-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 52;
    padding: 0 16px;
    background: rgba(7, 11, 20, 0.82);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  @media (min-width: 1024px) {
    .mobile-topbar { display: none; }
  }

  .mobile-topbar .brand-mark {
    width: 38px;
    height: 38px;
    font-size: 18px;
    border-radius: 12px;
  }

  .mobile-topbar .rail-brand-name {
    display: none;
  }

  .mobile-brand-text {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.2px;
    white-space: nowrap;
  }

  .mobile-menu-open {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: #fff;
    font-size: 18px;
    cursor: pointer;
  }

  .drawer {
    position: fixed;
    inset: 0;
    z-index: 60;
    background: rgba(5, 8, 15, 0.96);
    backdrop-filter: blur(18px);
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transition: opacity .28s ease, visibility .28s ease;
  }

  .drawer.open {
    opacity: 1;
    visibility: visible;
  }

  .drawer-top {
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .drawer-top .brand-mark {
    width: 40px;
    height: 40px;
    font-size: 19px;
  }

  .drawer .rail-nav {
    width: 100%;
    padding: 28px 22px 0;
    flex: 1;
    gap: 10px;
  }

  .drawer .rail-link {
    width: 100%;
    height: auto;
    min-height: 58px;
    flex-direction: row;
    justify-content: flex-start;
    gap: 14px;
    padding: 0 16px;
    border-radius: 16px;
    font-size: 16px;
    text-align: left;
    background: rgba(255, 255, 255, 0.025);
    border: 1px solid rgba(255, 255, 255, 0.06);
  }

  .drawer .rail-link.active {
    background: rgba(61, 126, 255, 0.13);
  }

  .drawer .rail-link.active::before { display: none; }

  .drawer .rail-link i {
    width: 24px;
    text-align: center;
  }

  .drawer .copyright-holder {
    padding: 18px 24px 32px;
    font-size: 13px;
    color: var(--text-low);
  }

  /* ====== 文章页空间 ====== */
  .article-main {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 96px 24px 60px;
  }

  @media (min-width: 768px) {
    .article-main {
      padding: 48px 32px 72px;
    }
  }

  @media (min-width: 1024px) {
    .article-main {
      padding: 52px 44px 80px;
    }
  }

  /* 面包屑 */
  .breadcrumb-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-low);
    margin-bottom: 22px;
  }

  .breadcrumb-row a {
    color: var(--text-mid);
    transition: color .2s ease;
  }

  .breadcrumb-row a:hover {
    color: var(--cyan);
  }

  .breadcrumb-row .slash {
    opacity: 0.5;
  }

  .breadcrumb-row .current-crumb {
    color: var(--text-mid);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 260px;
  }

  /* 文章首屏区 */
  .article-hero {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    padding: clamp(28px, 5vw, 52px) clamp(20px, 5vw, 54px);
    border: 1px solid rgba(255, 255, 255, 0.11);
    background:
      linear-gradient(130deg, rgba(13, 22, 38, 0.88), rgba(6, 10, 19, 0.72)),
      url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15);
  }

  .article-hero::after {
    content: "";
    position: absolute;
    right: -70px;
    top: -70px;
    width: 280px;
    height: 280px;
    background: radial-gradient(circle, rgba(38, 214, 255, 0.12), transparent 62%);
    pointer-events: none;
  }

  .article-cat {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(38, 214, 255, 0.1);
    color: #bdf3ff;
    font-size: 12px;
    border: 1px solid rgba(38, 214, 255, 0.2);
    padding: 5px 12px;
    border-radius: 999px;
    margin-bottom: 18px;
    letter-spacing: 0.5px;
  }

  .article-title {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: -0.5px;
    color: #fff;
    margin: 0 0 20px;
    max-width: 20em;
  }

  .article-hero-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px 24px;
    color: var(--text-mid);
    font-size: 13px;
  }

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

  .article-hero-meta i {
    color: var(--cyan);
    font-size: 13px;
    opacity: 0.85;
  }

  /* 玻璃卡片 */
  .glass-panel {
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.018));
    border: 1px solid var(--stroke);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.16);
  }

  @media (max-width: 767px) {
    .glass-panel { border-radius: 16px; }
  }

  /* 文章正文面板 */
  .article-card {
    padding: clamp(22px, 5vw, 56px);
    margin-top: 34px;
    position: relative;
  }

  .article-content {
    max-width: 860px;
    margin: 0 auto;
    font-size: 16px;
    color: var(--text-mid);
    line-height: 1.95;
  }

  .article-content p {
    margin: 0 0 24px;
  }

  .article-content h2 {
    font-size: clamp(22px, 2.5vw, 30px);
    color: var(--text-hi);
    font-weight: 700;
    line-height: 1.45;
    margin: 48px 0 20px;
    padding-left: 15px;
    border-left: 4px solid var(--blue);
  }

  .article-content h3 {
    font-size: clamp(19px, 2vw, 22px);
    color: var(--text-hi);
    font-weight: 600;
    margin: 40px 0 16px;
    line-height: 1.5;
  }

  .article-content ul,
  .article-content ol {
    margin: 0 0 26px;
    padding-left: 22px;
  }

  .article-content li {
    margin-bottom: 8px;
  }

  .article-content blockquote {
    margin: 28px 0;
    padding: 16px 22px;
    background: rgba(255, 255, 255, 0.028);
    border-left: 4px solid var(--blue);
    border-radius: 0 12px 12px 0;
    color: rgba(200, 218, 242, 0.88);
  }

  .article-content blockquote p:last-child {
    margin-bottom: 0;
  }

  .article-content a {
    color: var(--cyan);
    text-decoration: underline;
    text-underline-offset: 4px;
    text-decoration-color: rgba(38, 214, 255, 0.3);
    transition: color .2s ease, text-decoration-color .2s ease;
  }

  .article-content a:hover {
    color: #8bf0ff;
    text-decoration-color: var(--cyan);
  }

  .article-content code {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 2px 6px;
    border-radius: 6px;
    font-size: 14px;
    color: #dbeaff;
  }

  .article-content table {
    width: 100%;
    margin: 26px 0;
    border-collapse: collapse;
    font-size: 15px;
  }

  .article-content th,
  .article-content td {
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 10px 14px;
    text-align: left;
  }

  .article-content th {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-hi);
    font-weight: 600;
  }

  .tag-row {
    max-width: 860px;
    margin: 24px auto 0;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .tag-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 13px;
    background: rgba(61, 126, 255, 0.09);
    border: 1px solid rgba(61, 126, 255, 0.2);
    border-radius: 999px;
    color: var(--text-mid);
    font-size: 13px;
    letter-spacing: 0.2px;
    transition: border-color .2s ease, color .2s ease, background .2s ease;
  }

  .tag-chip:hover {
    border-color: rgba(38, 214, 255, 0.42);
    color: #d8f7ff;
    background: rgba(38, 214, 255, 0.07);
  }

  /* 相关阅读 */
  .related-section {
    margin-top: 46px;
  }

  .related-panel {
    padding: clamp(20px, 4vw, 38px);
  }

  .related-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-hi);
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 0 0 22px;
  }

  .related-title::before {
    content: "";
    width: 4px;
    height: 20px;
    border-radius: 999px;
    background: linear-gradient(180deg, var(--blue), var(--cyan));
  }

  .related-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .related-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 16px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.022);
    border: 1px solid rgba(255, 255, 255, 0.07);
    transition: border-color .2s ease, background .2s ease, transform .24s ease;
  }

  .related-item:hover {
    border-color: rgba(38, 214, 255, 0.28);
    background: rgba(255, 255, 255, 0.045);
    transform: translateX(4px);
  }

  .related-thumb {
    width: 64px;
    height: 64px;
    flex: 0 0 64px;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: var(--bg-panel);
  }

  .related-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .related-info {
    flex: 1;
    min-width: 0;
  }

  .related-info strong {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-hi);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
  }

  .related-info small {
    display: block;
    color: var(--text-low);
    font-size: 13px;
  }

  .related-arrow {
    color: var(--text-low);
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.04);
    transition: color .2s ease, background .2s ease, transform .24s ease;
  }

  .related-item:hover .related-arrow {
    color: var(--cyan);
    background: rgba(38, 214, 255, 0.1);
    transform: translateX(3px);
  }

  /* 返回按钮 */
  .back-cta {
    margin-top: 34px;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 14px;
    border: none;
    cursor: pointer;
    color: #07121f;
    font-weight: 700;
    font-size: 15px;
    background: linear-gradient(135deg, #3D7EFF, #26D6FF);
    box-shadow: 0 0 24px rgba(60, 140, 255, 0.3);
    transition: filter .2s ease, box-shadow .2s ease, transform .2s ease;
  }

  .btn-primary:hover {
    filter: brightness(1.08);
    box-shadow: 0 0 38px rgba(60, 170, 255, 0.42);
    transform: translateY(-2px);
  }

  .btn-primary:active {
    transform: translateY(1px);
  }

  .btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 14px;
    border: 1px solid rgba(160, 200, 255, 0.18);
    cursor: pointer;
    color: var(--text-mid);
    background: rgba(255, 255, 255, 0.035);
    font-weight: 600;
    font-size: 14px;
    transition: border-color .2s ease, color .2s ease, background .2s ease, transform .2s ease;
  }

  .btn-ghost:hover {
    border-color: var(--stroke-strong);
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-1px);
  }

  /* 内容未找到 */
  .not-found-panel {
    max-width: 820px;
    margin: 36px auto 20px;
    text-align: center;
    padding: 70px 28px;
  }

  .not-found-icon {
    width: 84px;
    height: 84px;
    margin: 0 auto 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 24px;
    font-size: 34px;
    color: var(--cyan);
    background: linear-gradient(160deg, rgba(255,255,255,.1), rgba(255,255,255,.02));
    border: 1px solid rgba(160,200,255,.22);
    box-shadow: 0 0 40px rgba(38, 214, 255, 0.12);
  }

  .not-found-panel h1 {
    font-size: clamp(26px, 4vw, 38px);
    font-weight: 800;
    color: #fff;
    margin: 0 0 16px;
  }

  .not-found-panel p {
    font-size: 15px;
    color: var(--text-mid);
    max-width: 54ch;
    margin: 0 auto 30px;
  }

  /* ====== 页脚 ====== */
  .site-footer {
    margin-top: 40px;
    background: rgba(4, 7, 13, 0.84);
    border-top: 1px solid rgba(160, 200, 255, 0.1);
    padding: 52px 0 26px;
  }

  .container-page {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 22px;
  }

  @media (min-width: 768px) {
    .container-page { padding: 0 34px; }
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 36px;
  }

  @media (min-width: 640px) {
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
  }

  @media (min-width: 1024px) {
    .footer-grid { grid-template-columns: 1.2fr .8fr .9fr .9fr; }
  }

  .footer-brand {
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .footer-brand small {
    font-weight: 400;
    font-size: 13px;
    color: var(--text-mid);
    line-height: 1.7;
    max-width: 28em;
  }

  .footer-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-hi);
    margin-bottom: 15px;
    letter-spacing: .2px;
  }

  .footer-links {
    display: flex;
    flex-direction: column;
    gap: 9px;
    align-items: flex-start;
  }

  .footer-links a {
    color: var(--text-mid);
    font-size: 14px;
    transition: color .2s ease, transform .2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .footer-links a:hover {
    color: var(--cyan);
    transform: translateX(3px);
  }

  .footer-copyright {
    margin-top: 38px;
    padding-top: 22px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    flex-direction: column;
    gap: 6px;
    color: var(--text-low);
    font-size: 13px;
  }

  @media (min-width: 768px) {
    .footer-copyright {
      flex-direction: row;
      justify-content: space-between;
    }
  }

  .btn-focus:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 3px;
  }

  ::selection {
    background: rgba(61, 126, 255, 0.45);
    color: #fff;
  }

  ::-webkit-scrollbar { width: 10px; }
  ::-webkit-scrollbar-track { background: #05080f; }
  ::-webkit-scrollbar-thumb { background: #1b2a45; border-radius: 99px; border: 2px solid #0a101c; }
  ::-webkit-scrollbar-thumb:hover { background: #29436b; }

/* roulang page: category2 */
:root{
    --bg-deep:#070B14;
    --bg-panel:#0D1626;
    --surface-glass:rgba(255,255,255,0.04);
    --stroke-glass:rgba(255,255,255,0.10);
    --stroke-strong:rgba(160,200,255,0.28);
    --blue-band:#3D7EFF;
    --cyan-signal:#26D6FF;
    --red-signal:#FF5D6C;
    --text-hi:rgba(240,248,255,0.96);
    --text-mid:rgba(180,200,228,0.82);
    --text-low:rgba(140,160,190,0.60);
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",system-ui,sans-serif;
    background:var(--bg-deep);
    color:var(--text-hi);
    line-height:1.85;
    letter-spacing:0.02em;
    display:grid;
    grid-template-columns:96px minmax(0,1fr);
    min-height:100vh;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    background:
      radial-gradient(circle at 14% 8%, rgba(50,110,255,0.20), transparent 420px),
      radial-gradient(circle at 86% 92%, rgba(0,200,240,0.10), transparent 480px),
      linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size:auto,auto,80px 80px,80px 80px;
    background-position:0 0,0 0,0 0,0 0;
    z-index:0;
  }
  body > *{position:relative;z-index:1}
  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block}
  button{font-family:inherit}

  .container-page{
    width:min(1180px,100%);
    margin:0 auto;
    padding:0 28px;
  }

  .rail-wrap{
    position:sticky;
    top:0;
    height:100vh;
    z-index:50;
    border-right:1px solid rgba(255,255,255,0.08);
    background:rgba(7,11,20,0.84);
    backdrop-filter:blur(16px);
    display:flex;
    flex-direction:column;
    align-items:center;
    padding:22px 0 18px;
  }
  .rail-brand{
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:10px;
    margin-bottom:26px;
  }
  .rail-brand-icon{
    width:50px;
    height:50px;
    border-radius:16px;
    display:grid;
    place-items:center;
    background:linear-gradient(145deg,rgba(255,255,255,0.10),rgba(255,255,255,0.02));
    border:1px solid var(--stroke-strong);
    box-shadow:0 0 18px rgba(70,130,255,0.28), inset 0 1px rgba(255,255,255,0.16);
    font-size:28px;
    font-weight:800;
    color:#fff;
  }
  .rail-brand-text{
    font-size:12px;
    font-weight:600;
    line-height:1.35;
    text-align:center;
    white-space:pre-line;
    color:rgba(220,235,255,0.86);
  }
  .rail-nav{
    display:flex;
    flex-direction:column;
    gap:4px;
    flex:1;
    width:100%;
    padding:0 8px;
  }
  .rail-link{
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:5px;
    padding:12px 4px 10px;
    border-radius:14px;
    color:var(--text-mid);
    font-size:11px;
    text-align:center;
    line-height:1.3;
    position:relative;
    transition:all .25s ease;
    border:1px solid transparent;
  }
  .rail-link i{
    font-size:18px;
    color:var(--text-low);
    transition:color .25s ease, transform .25s ease;
  }
  .rail-link:hover{
    background:rgba(255,255,255,0.07);
    color:var(--text-hi);
    transform:translateY(-1px);
  }
  .rail-link:hover i{
    color:var(--cyan-signal);
    transform:scale(1.08);
  }
  .rail-link.active{
    color:var(--cyan-signal);
    background:linear-gradient(135deg,rgba(61,126,255,0.18),rgba(38,214,255,0.04));
    border-color:rgba(150,210,255,0.18);
  }
  .rail-link.active::before{
    content:"";
    position:absolute;
    left:-2px;
    top:22%;
    bottom:22%;
    width:3px;
    border-radius:4px;
    background:var(--cyan-signal);
    box-shadow:0 0 12px var(--cyan-signal);
  }
  .rail-link.active i{
    color:var(--cyan-signal);
  }
  .rail-top{
    width:44px;
    height:44px;
    border-radius:50%;
    display:grid;
    place-items:center;
    background:rgba(255,255,255,0.04);
    border:1px solid var(--stroke-glass);
    color:var(--text-low);
    transition:all .3s ease;
  }
  .rail-top:hover{
    color:var(--cyan-signal);
    transform:rotate(90deg);
    border-color:var(--stroke-strong);
  }

  .mobile-header{
    display:none;
  }
  .mobile-nav{
    display:none;
  }

  .card-glass{
    background:linear-gradient(160deg, rgba(255,255,255,0.09), rgba(255,255,255,0.03));
    border:1px solid var(--stroke-glass);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-radius:20px;
    box-shadow:0 18px 50px rgba(0,10,30,0.28);
    position:relative;
    transition:all .3s ease;
  }
  .card-glass::before{
    content:"";
    position:absolute;
    left:10px;
    right:10px;
    top:0;
    height:1px;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,0.28),transparent);
  }
  .card-glass:hover{
    border-color:var(--stroke-strong);
    box-shadow:0 20px 58px rgba(0,10,30,0.4);
    transform:translateY(-3px);
  }

  .btn-primary{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:13px 22px;
    border-radius:999px;
    border:none;
    font-weight:700;
    color:#03102A;
    background:linear-gradient(135deg,var(--blue-band),var(--cyan-signal));
    box-shadow:0 0 24px rgba(60,140,255,0.35);
    transition:all .25s ease;
    cursor:pointer;
  }
  .btn-primary:hover{
    filter:brightness(1.1);
    box-shadow:0 0 38px rgba(60,140,255,0.5);
    transform:translateY(-1px);
  }
  .btn-primary:active{
    transform:translateY(1px) scale(.98);
  }
  .btn-dark{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:13px 22px;
    border-radius:999px;
    border:1px solid var(--stroke-strong);
    background:rgba(255,255,255,0.05);
    color:var(--text-hi);
    font-weight:600;
    backdrop-filter:blur(12px);
    transition:all .25s ease;
    cursor:pointer;
  }
  .btn-dark:hover{
    border-color:var(--cyan-signal);
    color:var(--cyan-signal);
    background:rgba(38,214,255,0.06);
  }
  .btn-dark:active{
    transform:scale(.98);
  }

  .section-gap{
    padding:84px 0;
  }
  .section-title{
    display:flex;
    align-items:flex-start;
    gap:14px;
    margin-bottom:38px;
  }
  .section-title-before{
    width:14px;
    height:34px;
    border-radius:6px;
    flex:none;
    background:linear-gradient(180deg,var(--blue-band),var(--cyan-signal));
    box-shadow:0 0 18px rgba(38,214,255,0.4);
  }
  .section-title h2{
    font-size:clamp(25px,3vw,32px);
    line-height:1.25;
    font-weight:700;
    margin:0;
    color:rgba(235,245,255,0.95);
    letter-spacing:-0.02em;
  }
  .section-sub{
    margin-top:6px;
    color:var(--text-mid);
    font-size:15px;
    max-width:70ch;
  }

  .hero-panel{
    min-height:620px;
    display:flex;
    align-items:center;
    position:relative;
    overflow:hidden;
    background:
      linear-gradient(180deg,rgba(7,11,20,0.34),rgba(7,11,20,0.94)),
      url('/assets/images/backpic/back-2.webp') center 28% / cover no-repeat;
  }
  .hero-panel::before{
    content:"";
    position:absolute;
    right:-120px;
    top:-80px;
    width:500px;
    height:500px;
    background:radial-gradient(circle,rgba(38,214,255,0.18),transparent 63%);
    pointer-events:none;
  }

  .floating-num{
    width:44px;
    height:44px;
    border-radius:14px;
    display:grid;
    place-items:center;
    font-weight:800;
    font-size:18px;
    color:#fff;
    background:rgba(61,126,255,0.24);
    border:1px solid rgba(160,200,255,0.30);
    box-shadow:0 0 22px rgba(61,126,255,0.2);
  }

  .step-line{
    width:0;
    height:100%;
    min-height:150px;
    border-left:1px solid rgba(140,190,255,0.28);
    margin-left:26px;
  }

  .quote-blank{
    position:relative;
    padding:6px 4px 6px 28px;
    color:rgba(200,220,245,0.88);
    font-size:19px;
    font-weight:500;
    line-height:1.9;
    border-left:5px solid var(--cyan-signal);
    box-shadow:none;
    background:transparent;
    margin:0;
  }
  .quote-blank small{
    display:block;
    margin-top:10px;
    color:var(--text-low);
    font-size:13px;
    font-weight:400;
  }

  .sub-list-row{
    display:grid;
    grid-template-columns:64px 1fr auto;
    gap:20px;
    align-items:center;
    padding:20px 6px;
    border-bottom:1px solid rgba(255,255,255,0.08);
    transition:all .25s ease;
  }
  .sub-list-row:hover{
    background:rgba(255,255,255,0.04);
    border-radius:16px;
  }

  .faq-wrap details{
    background:linear-gradient(160deg,rgba(255,255,255,0.06),rgba(255,255,255,0.02));
    border:1px solid var(--stroke-glass);
    border-radius:20px;
    margin-bottom:14px;
    overflow:hidden;
    transition:border-color .3s;
  }
  .faq-wrap details[open]{
    border-color:rgba(140,190,255,0.32);
  }
  .faq-wrap summary{
    list-style:none;
    cursor:pointer;
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:20px;
    padding:22px 26px;
    font-size:16px;
    font-weight:600;
    color:rgba(238,246,255,0.94);
  }
  .faq-wrap summary::-webkit-details-marker{display:none}
  .faq-icon{
    flex:none;
    width:28px;
    height:28px;
    display:grid;
    place-items:center;
    border-radius:50%;
    font-size:18px;
    font-weight:300;
    color:var(--cyan-signal);
    background:rgba(38,214,255,0.08);
    border:1px solid rgba(38,214,255,0.20);
    transition:transform .28s ease,background .28s ease;
  }
  .faq-wrap details[open] .faq-icon{
    transform:rotate(45deg);
    background:rgba(38,214,255,0.16);
  }
  .faq-body{
    padding:0 26px 22px;
    color:var(--text-mid);
    font-size:15px;
    line-height:1.9;
  }

  .red-dot{
    color:var(--red-signal);
  }

  .site-footer{
    background:rgba(4,8,16,0.72);
    border-top:1px solid rgba(255,255,255,0.08);
    padding:54px 0 34px;
    margin-top:0;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1.1fr;
    gap:34px;
    margin-bottom:28px;
  }
  .footer-brand{
    font-size:20px;
    font-weight:800;
    color:var(--text-hi);
    display:flex;
    flex-direction:column;
    gap:10px;
    margin-bottom:8px;
  }
  .footer-brand small{
    color:var(--text-low);
    font-weight:400;
    font-size:13px;
  }
  .footer-title{
    font-size:15px;
    font-weight:700;
    color:rgba(228,239,255,0.88);
    margin-bottom:16px;
  }
  .footer-links{
    display:flex;
    flex-direction:column;
    gap:8px;
    align-items:flex-start;
  }
  .footer-links a{
    font-size:14px;
    color:var(--text-mid);
    transition:color .25s;
  }
  .footer-links a:hover{
    color:var(--cyan-signal);
  }
  .footer-copyright{
    border-top:1px solid rgba(255,255,255,0.06);
    padding-top:22px;
    font-size:13px;
    color:var(--text-low);
  }

  @media (max-width:1024px){
    body{
      display:block;
    }
    .rail-wrap{
      display:none;
    }
    .mobile-header{
      display:flex;
      position:sticky;
      top:0;
      z-index:60;
      height:60px;
      align-items:center;
      justify-content:space-between;
      padding:0 18px;
      background:rgba(7,11,20,0.82);
      backdrop-filter:blur(16px);
      border-bottom:1px solid rgba(255,255,255,0.08);
    }
    .mobile-brand{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .mobile-brand-icon{
      width:36px;
      height:36px;
      border-radius:12px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg,rgba(61,126,255,0.24),rgba(38,214,255,0.10));
      border:1px solid rgba(160,200,255,0.30);
      font-weight:800;
    }
    .mobile-brand-text{
      font-size:16px;
      font-weight:700;
      color:var(--text-hi);
    }
    .mobile-menu-btn{
      width:42px;
      height:42px;
      border-radius:12px;
      border:1px solid var(--stroke-glass);
      background:rgba(255,255,255,0.04);
      color:var(--text-hi);
      cursor:pointer;
      display:grid;
      place-items:center;
    }
    .mobile-menus{
      display:block;
      position:fixed;
      inset:60px 0 auto 0;
      z-index:55;
      background:rgba(7,11,20,0.97);
      padding:14px 18px 26px;
      border-bottom:1px solid rgba(255,255,255,0.08);
      transform:translateY(-16px);
      opacity:0;
      pointer-events:none;
      transition:all .28s ease;
    }
    .mobile-menus.open{
      transform:translateY(0);
      opacity:1;
      pointer-events:auto;
    }
    .mobile-menus a{
      display:flex;
      align-items:center;
      gap:12px;
      padding:15px 10px;
      border-radius:14px;
      font-size:16px;
      font-weight:500;
      color:var(--text-mid);
      border-bottom:1px solid rgba(255,255,255,0.04);
    }
    .mobile-menus a i{
      width:22px;
      text-align:center;
    }
    .mobile-menus a.active{
      color:var(--cyan-signal);
      background:linear-gradient(135deg,rgba(61,126,255,0.15),rgba(255,255,255,0.02));
    }
    .section-gap{
      padding:58px 0;
    }
  }

  @media (max-width:768px){
    .container-page{
      padding:0 16px;
    }
    .grid-stack-mobile{
      grid-template-columns:1fr !important;
    }
    .footer-grid{
      grid-template-columns:1fr;
      gap:24px;
    }
    .footer-copyright p{
      font-size:12px;
    }
    .quote-blank{
      font-size:16px;
    }
  }

  @media (max-width:520px){
    .section-title h2{
      font-size:22px;
    }
    .sub-list-row{
      grid-template-columns:48px 1fr auto;
      gap:12px;
    }
    .hero-panel{
      min-height:520px;
    }
    .btn-primary,.btn-dark{
      width:100%;
      justify-content:center;
      font-size:14px;
      padding:14px 12px;
    }
    .faq-wrap summary{
      padding:18px 16px;
      font-size:15px;
    }
    .faq-body{
      padding:0 18px 20px;
    }
  }

/* roulang page: category3 */
:root{
  --bg-deep:#070B14;
  --bg-panel:#0D1626;
  --surface-glass:rgba(255,255,255,0.04);
  --stroke-glass:rgba(255,255,255,0.10);
  --stroke-strong:rgba(160,200,255,0.28);
  --blue-band:#3D7EFF;
  --cyan-signal:#26D6FF;
  --red-signal:#FF5D6C;
  --text-hi:rgba(240,248,255,0.96);
  --text-mid:rgba(180,200,228,0.82);
  --text-low:rgba(140,160,190,0.60);
  --radius-lg:20px;
  --radius-card:16px;
  --radius-badge:999px;
  --shadow-card:0 18px 50px rgba(0,10,30,0.35);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",system-ui,sans-serif;
  font-size:15.5px;
  line-height:1.75;
  color:var(--text-mid);
  background:var(--bg-deep);
  min-height:100vh;
  display:grid;
  grid-template-columns:96px minmax(0,1fr);
  position:relative;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(600px 420px at 4% 2%, rgba(51,110,255,.18), transparent 68%),
    radial-gradient(560px 480px at 94% 96%, rgba(0,200,240,.08), transparent 68%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit}
ul{list-style:none}
.main-area{
  grid-column:2;
  min-width:0;
  position:relative;
  z-index:1;
}
.inner-wrap{
  max-width:1180px;
  margin:0 auto;
  padding:0 clamp(22px,4vw,44px);
}
.container-page{
  max-width:1180px;
  margin:0 auto;
  padding-left:clamp(22px,4vw,44px);
  padding-right:clamp(22px,4vw,44px);
}
/* left rail */
.rail-nav{
  grid-column:1;
  position:sticky;
  top:0;
  height:100vh;
  background:rgba(7,11,20,.86);
  border-right:1px solid var(--stroke-glass);
  display:flex;
  flex-direction:column;
  align-items:center;
  padding:18px 8px 18px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  z-index:40;
}
.rail-brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:8px;
}
.brand-mark{
  width:48px;
  height:48px;
  border-radius:14px;
  background:linear-gradient(160deg,rgba(255,255,255,.16),rgba(255,255,255,.02));
  border:1px solid var(--stroke-glass);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:23px;
  font-weight:800;
  color:#fff;
  position:relative;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.16),0 10px 30px rgba(0,0,0,.24);
}
.brand-mark::after{
  content:"";
  position:absolute;
  width:12px;
  height:12px;
  right:-2px;
  top:-2px;
  background:var(--cyan-signal);
  border-radius:50%;
  box-shadow:0 0 12px var(--cyan-signal);
}
.rail-brand-name{
  font-size:11px;
  line-height:1.5;
  text-align:center;
  color:var(--text-hi);
  letter-spacing:.08em;
}
.rail-links{
  margin-top:26px;
  width:100%;
  display:flex;
  flex-direction:column;
  gap:6px;
  flex:1;
  overflow-y:auto;
}
.rail-link{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  width:100%;
  min-height:62px;
  padding:8px 4px;
  border-radius:14px;
  color:var(--text-mid);
  font-size:11.5px;
  line-height:1.4;
  text-align:center;
  border:1px solid transparent;
  transition:all .22s ease;
  background:transparent;
}
.rail-link i{font-size:17px;transition:transform .22s ease}
.rail-link:hover{
  color:var(--cyan-signal);
  background:rgba(255,255,255,.04);
  border-color:rgba(255,255,255,.08);
  transform:translateX(-1px);
}
.rail-link:hover i{transform:scale(1.08)}
.rail-link.active{
  color:var(--cyan-signal);
  background:linear-gradient(135deg,rgba(61,126,255,.14),rgba(38,214,255,.05));
  border-left:2px solid var(--cyan-signal);
  box-shadow:0 0 24px rgba(38,214,255,.08);
}
.rail-link.active i{text-shadow:0 0 14px rgba(38,214,255,.6)}
.rail-to-top{
  width:40px;
  height:40px;
  border-radius:50%;
  background:rgba(255,255,255,.04);
  border:1px solid var(--stroke-glass);
  color:var(--text-mid);
  display:flex;
  align-items:center;
  justify-content:center;
  transition:all .25s ease;
  cursor:pointer;
}
.rail-to-top:hover{
  color:var(--cyan-signal);
  border-color:var(--stroke-strong);
  transform:rotate(90deg);
}
/* mobile header */
.mobile-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:60px;
  background:rgba(7,11,20,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--stroke-glass);
  z-index:60;
  display:none;
  align-items:center;
  padding:0 16px;
}
.mobile-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--text-hi);
  font-weight:700;
  font-size:15px;
}
.mobile-brand .brand-dot{
  width:32px;
  height:32px;
  border-radius:10px;
  background:linear-gradient(135deg,rgba(61,126,255,.85),rgba(38,214,255,.55));
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
}
.menu-btn{
  width:38px;
  height:38px;
  border-radius:12px;
  border:1px solid var(--stroke-glass);
  background:rgba(255,255,255,.04);
  color:var(--text-hi);
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.mobile-drawer{
  position:fixed;
  inset:60px 0 0;
  background:rgba(7,11,20,.98);
  z-index:55;
  backdrop-filter:blur(20px);
  padding:22px 20px 40px;
  transform:translateY(-8px);
  opacity:0;
  visibility:hidden;
  transition:.3s ease;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.mobile-drawer.open{
  transform:translateY(0);
  opacity:1;
  visibility:visible;
}
.drawer-link{
  display:flex;
  align-items:center;
  gap:16px;
  padding:16px 18px;
  border-radius:16px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--stroke-glass);
  color:var(--text-hi);
  font-size:16px;
  font-weight:600;
}
.drawer-link i{width:24px;color:var(--cyan-signal)}
.drawer-link.active{
  border-color:rgba(38,214,255,.4);
  background:linear-gradient(135deg,rgba(61,126,255,.16),rgba(38,214,255,.05));
}
/* common */
.section-title{
  display:flex;
  align-items:center;
  gap:14px;
  color:var(--text-hi);
  font-size:29px;
  letter-spacing:-.3px;
  font-weight:700;
  line-height:1.35;
  margin-bottom:10px;
}
.section-title::before{
  content:"";
  display:block;
  width:4px;
  height:24px;
  border-radius:4px;
  background:linear-gradient(180deg,var(--blue-band),var(--cyan-signal));
  flex:0 0 auto;
}
.section-sub{
  color:var(--text-low);
  font-size:15px;
  padding-left:18px;
  margin-bottom:34px;
}
.page-section{padding:62px 0}
.glass-card{
  position:relative;
  background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--stroke-glass);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:border-color .3s ease,box-shadow .3s ease,transform .3s ease;
}
.glass-card::before{
  content:"";
  position:absolute;
  top:0;
  left:6%;
  right:6%;
  height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.22),rgba(255,255,255,0));
  pointer-events:none;
}
.glass-card:hover{
  border-color:var(--stroke-strong);
  box-shadow:var(--shadow-card);
}
.panel-pad{padding:clamp(22px,3.4vw,38px)}
.btn-primary,.btn-ghost,.btn-red{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  border-radius:999px;
  padding:14px 26px;
  font-size:15px;
  font-weight:700;
  line-height:1.3;
  border:1px solid transparent;
  cursor:pointer;
  transition:all .25s ease;
}
.btn-primary{
  background:linear-gradient(135deg,#3D7EFF,#26D6FF);
  color:#06121C;
  box-shadow:0 0 24px rgba(60,140,255,.35);
}
.btn-primary:hover{
  filter:brightness(1.08);
  box-shadow:0 0 38px rgba(60,140,255,.48);
  transform:translateY(-2px);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 16px rgba(60,140,255,.26)}
.btn-ghost{
  background:rgba(255,255,255,.04);
  color:var(--text-hi);
  border-color:rgba(160,200,255,.2);
}
.btn-ghost:hover{
  border-color:var(--stroke-strong);
  background:rgba(255,255,255,.07);
  color:#fff;
  transform:translateY(-2px);
}
.btn-red{
  background:linear-gradient(135deg,rgba(255,93,108,.92),rgba(255,93,108,.68));
  color:#fff;
  box-shadow:0 0 18px rgba(255,93,108,.22);
  padding:12px 24px;
  font-size:14px;
}
.btn-red:hover{filter:brightness(1.06);box-shadow:0 0 30px rgba(255,93,108,.38);transform:translateY(-2px)}
.btn-small{padding:12px 22px;font-size:14px}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--cyan-signal);
  font-size:14px;
  font-weight:600;
  transition:gap .2s ease;
}
.text-link:hover{gap:13px;color:#7FE7FF}
/* hero */
.cat-hero{
  position:relative;
  padding:58px 0 76px;
  border-bottom:1px solid var(--stroke-glass);
  overflow:hidden;
}
.cat-hero .inner-wrap{position:relative;z-index:2}
.hero-bg{
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg,rgba(7,11,20,.94) 0%,rgba(7,11,20,.78) 42%,rgba(7,11,20,.46) 78%,rgba(7,11,20,.24) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(360px 240px at 80% 18%,rgba(38,214,255,.06),transparent 70%);
  pointer-events:none;
}
.cat-hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.25fr) minmax(260px,.72fr);
  gap:clamp(28px,5vw,64px);
  align-items:center;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-low);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-low);transition:color .2s}
.breadcrumb a:hover{color:var(--cyan-signal)}
.breadcrumb i{font-size:10px;margin:0 4px;color:rgba(180,200,228,.35)}
.breadcrumb em{font-style:normal;color:var(--text-mid)}
.hero-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(160,200,255,.18);
  border-radius:999px;
  padding:7px 16px;
  font-size:12px;
  color:#BEDCFF;
  margin-bottom:18px;
  letter-spacing:.03em;
}
.hero-chip i{color:var(--cyan-signal)}
.cat-hero h1{
  font-size:clamp(32px,4.1vw,50px);
  line-height:1.2;
  color:var(--text-hi);
  font-weight:800;
  letter-spacing:-.6px;
}
.cat-hero h1 .light{
  background:linear-gradient(120deg,#8CC7FF,#5AE7FF);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{
  margin-top:18px;
  font-size:17px;
  color:var(--text-mid);
  max-width:46ch;
  line-height:1.85;
}
.hero-tools{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:32px;
}
.hero-visual{
  position:relative;
}
.hero-card{
  padding:12px;
  background:linear-gradient(160deg,rgba(255,255,255,.1),rgba(255,255,255,.025));
  border:1px solid rgba(255,255,255,.16);
  border-radius:22px;
  box-shadow:0 26px 64px rgba(0,8,28,.42);
}
.hero-card-img{
  border-radius:16px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.08);
}
.hero-card-img img{aspect-ratio:4/3;object-fit:cover;width:100%}
.hero-card-caption{
  display:flex;
  align-items:center;
  gap:10px;
  padding:16px 10px 12px;
}
.hero-func-pill{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(160,200,255,.18);
  color:#DCEBFF;
  border-radius:999px;
  padding:4px 11px;
  font-size:12px;
}
.hero-card-note{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:10px 10px 8px;
  border-top:1px solid rgba(255,255,255,.08);
  color:var(--cyan-signal);
  font-size:13px;
  font-weight:600;
}
/* lead section */
.lead-section{padding-top:78px}
.lead-panel{
  border-radius:22px;
  padding:clamp(26px,3.8vw,46px);
  background:
    linear-gradient(150deg,rgba(255,255,255,.07),rgba(255,255,255,.01)),
    linear-gradient(160deg,rgba(7,11,20,.98),rgba(13,22,38,.96)),
    url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  border:1px solid var(--stroke-glass);
  position:relative;
  overflow:hidden;
}
.lead-panel::before{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,rgba(255,255,255,.03),rgba(255,255,255,0))}
.lead-panel h2{
  color:var(--text-hi);
  font-size:clamp(22px,2.5vw,30px);
  font-weight:700;
  margin-bottom:18px;
}
.lead-copy{
  max-width:880px;
  font-size:16px;
  line-height:1.95;
  color:var(--text-mid);
  position:relative;
  z-index:1;
}
.lead-copy p+p{margin-top:16px}
.lead-copy strong{color:#DCEBFF;font-weight:600}
.lead-meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:22px;
}
.mini-tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:12.5px;
  color:#C6D7EC;
  background:rgba(255,255,255,.05);
  border:1px solid var(--stroke-glass);
  border-radius:999px;
  padding:6px 14px;
}
.mini-tag i{color:var(--cyan-signal)}
/* split */
.split-grid{
  display:grid;
  grid-template-columns:minmax(0,1.65fr) minmax(280px,.72fr);
  gap:28px;
  align-items:stretch;
}
.table-panel-title{
  display:flex;
  align-items:center;
  gap:12px;
  color:var(--text-hi);
  font-size:20px;
  font-weight:700;
  margin-bottom:8px;
}
.table-panel-title i{
  width:40px;
  height:40px;
  border-radius:12px;
  background:rgba(38,214,255,.12);
  color:var(--cyan-signal);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:17px;
}
.table-panel-desc{font-size:14px;color:var(--text-low);margin-bottom:16px}
.func-list{
  display:flex;
  flex-direction:column;
  margin-top:20px;
  border-top:1px solid rgba(255,255,255,.07);
}
.func-row{
  display:grid;
  grid-template-columns:56px minmax(0,1fr) auto;
  gap:16px;
  align-items:center;
  padding:17px 6px;
  border-bottom:1px solid rgba(255,255,255,.07);
  transition:background .25s ease;
}
.func-row:hover{background:rgba(255,255,255,.028)}
.func-num{
  font-family:"DIN Alternate",Inter,sans-serif;
  font-size:13px;
  font-weight:700;
  color:var(--cyan-signal);
  background:rgba(38,214,255,.08);
  border:1px solid rgba(38,214,255,.18);
  border-radius:12px;
  width:46px;
  height:34px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.func-body h3{color:var(--text-hi);font-size:16.5px;font-weight:700;line-height:1.4}
.func-body p{color:var(--text-mid);font-size:14px;line-height:1.65;margin-top:3px;max-width:60ch}
.func-link{
  white-space:nowrap;
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--cyan-signal);
  font-size:14px;
  font-weight:600;
  transition:all .2s;
}
.func-link i{transition:transform .2s}
.func-link:hover i{transform:translateX(5px)}
.side-panel{padding:26px 22px;display:flex;flex-direction:column}
.side-panel-icon{
  width:46px;
  height:46px;
  border-radius:14px;
  background:linear-gradient(135deg,rgba(255,93,108,.18),rgba(255,93,108,.04));
  border:1px solid rgba(255,93,108,.24);
  color:#FF97A3;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:19px;
  margin-bottom:16px;
}
.side-panel h3{color:var(--text-hi);font-size:18px;font-weight:700;margin-bottom:8px}
.side-panel>p{font-size:14.5px;color:var(--text-mid);line-height:1.8}
.badge-list{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:18px 0;
}
.badge-chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(160,200,255,.16);
  color:#D4E4F2;
  border-radius:999px;
  padding:6px 14px;
  font-size:12.5px;
}
.badge-chip i{color:var(--cyan-signal)}
.badge-chip.warn i{color:#FFD36B}
.side-panel .btn-ghost{margin-top:auto}
/* feature cards */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:22px;
}
.feature-card{
  padding:28px 22px 24px;
}
.feature-card-icon{
  width:50px;
  height:50px;
  border-radius:15px;
  background:linear-gradient(135deg,rgba(61,126,255,.2),rgba(38,214,255,.04));
  border:1px solid rgba(255,255,255,.12);
  color:var(--cyan-signal);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:19px;
  margin-bottom:16px;
}
.feature-card h3{color:var(--text-hi);font-size:17px;font-weight:700;margin-bottom:8px}
.feature-card p{font-size:14.5px;line-height:1.8;color:var(--text-mid)}
/* process */
.process-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
  counter-reset:steps;
}
.process-step{
  padding:32px 26px;
  position:relative;
}
.step-index{
  font-family:"DIN Alternate",Inter,sans-serif;
  font-size:14px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--cyan-signal);
  border:1px solid rgba(38,214,255,.25);
  background:rgba(38,214,255,.08);
  border-radius:999px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;
  height:27px;
  margin-bottom:18px;
}
.process-step h3{color:var(--text-hi);font-size:18px;font-weight:700;margin-bottom:10px}
.process-step p{font-size:14.5px;line-height:1.85;color:var(--text-mid)}
/* scene */
.scene-grid{
  display:grid;
  grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);
  gap:28px;
  align-items:stretch;
}
.scene-media{
  border-radius:var(--radius-card);
  overflow:hidden;
  min-height:320px;
  position:relative;
  border:1px solid rgba(255,255,255,.08);
}
.scene-media img{width:100%;height:100%;position:absolute;inset:0;object-fit:cover}
.scene-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,0) 0%,rgba(7,11,20,.62) 100%);
}
.scene-media-tag{
  position:absolute;
  left:20px;
  right:20px;
  bottom:18px;
  z-index:2;
  color:rgba(240,248,255,.94);
  font-weight:600;
  font-size:16px;
  letter-spacing:.02em;
}
.scene-copy{padding:clamp(24px,3vw,36px);display:flex;flex-direction:column;justify-content:center}
.scene-copy h3{color:var(--text-hi);font-size:23px;line-height:1.5;font-weight:700;margin-bottom:16px}
.scene-copy p{font-size:15.5px;line-height:1.9;color:var(--text-mid);margin-bottom:18px}
.check-list{
  display:grid;
  gap:10px;
  margin-bottom:24px;
}
.check-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14.5px;
  color:var(--text-mid);
  line-height:1.7;
}
.check-list i{color:var(--cyan-signal);margin-top:4px}
/* faq */
.faq-list{
  display:grid;
  gap:14px;
  max-width:920px;
}
.faq-item{
  background:rgba(255,255,255,.035);
  border:1px solid var(--stroke-glass);
  border-radius:16px;
  transition:border-color .25s ease,background .25s ease,box-shadow .25s ease;
}
.faq-item[open]{
  border-color:rgba(38,214,255,.4);
  background:rgba(255,255,255,.055);
  box-shadow:0 14px 40px rgba(0,8,26,.22);
}
.faq-item summary{
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:18px 22px;
  cursor:pointer;
  font-size:16px;
  color:var(--text-hi);
  font-weight:600;
  letter-spacing:.01em;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .faq-icon{
  position:relative;
  width:26px;
  height:26px;
  flex:0 0 26px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.16);
  transition:all .25s ease;
}
.faq-item summary .faq-icon::before,
.faq-item summary .faq-icon::after{
  content:"";
  position:absolute;
  top:50%;
  left:50%;
  width:11px;
  height:1.5px;
  background:var(--cyan-signal);
  transform:translate(-50%,-50%);
  transition:transform .3s ease,opacity .2s;
}
.faq-item summary .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-item[open] summary .faq-icon::before{transform:translate(-50%,-50%) rotate(135deg)}
.faq-item[open] summary .faq-icon::after{transform:translate(-50%,-50%) rotate(225deg);opacity:0}
.faq-answer{
  padding:0 22px 20px;
  color:var(--text-mid);
  font-size:14.5px;
  line-height:1.85;
  max-width:760px;
}
/* cta */
.cta-section{padding:26px 0 72px}
.cta-band{
  position:relative;
  background:
    linear-gradient(150deg,rgba(7,11,20,.93),rgba(13,22,38,.92)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border:1px solid var(--stroke-glass);
  border-radius:24px;
  padding:clamp(28px,4vw,50px);
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-band::after{
  content:"";
  position:absolute;
  width:260px;
  height:260px;
  right:-80px;
  top:-80px;
  background:radial-gradient(closest-side,rgba(38,214,255,.14),transparent);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:2;flex:1 1 320px}
.cta-copy .mini-bookmark{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:#FF97A3;
  font-size:13px;
  letter-spacing:.05em;
  margin-bottom:12px;
}
.cta-copy h2{
  color:var(--text-hi);
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.45;
  font-weight:800;
  margin-bottom:10px;
}
.cta-copy p{color:var(--text-mid);font-size:15px;line-height:1.85;max-width:50ch}
.cta-actions{
  position:relative;
  z-index:2;
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}
/* footer */
.site-footer{
  background:rgba(4,7,13,.68);
  border-top:1px solid var(--stroke-glass);
  padding:58px 0 30px;
  position:relative;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.25fr .9fr .9fr 1.1fr;
  gap:38px;
  padding-bottom:34px;
  border-bottom:1px solid rgba(255,255,255,.07);
}
.footer-brand{
  font-size:19px;
  font-weight:800;
  color:var(--text-hi);
  line-height:1.4;
  letter-spacing:.01em;
  margin-bottom:14px;
  display:flex;
  flex-direction:column;
  gap:8px;
}
.footer-brand small{
  font-size:13.5px;
  font-weight:400;
  color:var(--text-mid);
  line-height:1.7;
}
.footer-title{
  color:var(--text-hi);
  font-weight:700;
  font-size:15.5px;
  margin-bottom:16px;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links a{
  color:var(--text-mid);
  font-size:14px;
  line-height:1.7;
  transition:color .2s,padding-left .2s;
}
.footer-links a:hover{color:var(--cyan-signal);padding-left:3px}
.footer-copyright{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  padding-top:22px;
  color:var(--text-low);
  font-size:13px;
  line-height:1.7;
}
/* toast */
.toast{
  position:fixed;
  left:50%;
  bottom:32px;
  transform:translateX(-50%) translateY(20px);
  background:rgba(13,22,38,.96);
  border:1px solid var(--stroke-strong);
  color:#EAF4FF;
  padding:12px 24px;
  border-radius:999px;
  font-size:14px;
  z-index:99;
  opacity:0;
  visibility:hidden;
  transition:.3s ease;
  box-shadow:0 18px 46px rgba(0,8,26,.48);
  backdrop-filter:blur(10px);
}
.toast.show{
  opacity:1;
  visibility:visible;
  transform:translateX(-50%) translateY(0);
}
/* responsive */
@media (max-width:1150px){
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
  .split-grid{grid-template-columns:1fr}
}
@media (max-width:1023px){
  body{grid-template-columns:minmax(0,1fr)}
  .rail-nav{display:none}
  .mobile-header{display:flex}
  .main-area{grid-column:auto;padding-top:60px}
  .cat-hero{padding:46px 0 60px}
  .cat-hero-grid{grid-template-columns:1fr}
  .hero-visual{max-width:440px}
  .scene-grid{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr}
  .table-panel-title{flex-wrap:wrap}
}
@media (max-width:767px){
  .section-title{font-size:23px}
  .page-section{padding:48px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .func-row{grid-template-columns:50px minmax(0,1fr);gap:10px}
  .func-link{grid-column:2;margin-left:60px}
  .func-num{width:40px}
  .footer-copyright{flex-direction:column}
  .cat-hero-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  html{font-size:16px}
  body{font-size:15px}
  .inner-wrap,.container-page{padding:0 18px}
  .feature-grid{grid-template-columns:1fr}
  .cat-hero h1{font-size:30px}
  .hero-tools .btn-primary,.hero-tools .btn-ghost{width:100%}
  .btn-primary,.btn-ghost{width:100%}
  .scene-media{min-height:220px}
  .func-row{grid-template-columns:1fr}
  .func-num{display:none}
  .func-link{grid-column:auto;margin-left:0}
  .func-body p{margin-bottom:10px}
  .drawer-link{padding:13px 14px}
}

/* roulang page: category4 */
:root {
      --bg-deep: #070B14;
      --bg-panel: #0D1626;
      --surface-glass: rgba(255, 255, 255, 0.04);
      --stroke-glass: rgba(255, 255, 255, 0.10);
      --stroke-strong: rgba(160, 200, 255, 0.28);
      --blue-band: #3D7EFF;
      --cyan-signal: #26D6FF;
      --red-signal: #FF5D6C;
      --text-hi: rgba(240, 248, 255, 0.96);
      --text-mid: rgba(180, 200, 228, 0.82);
      --text-low: rgba(140, 160, 190, 0.60);
      --radius-card: 16px;
      --shadow-card: 0 18px 50px rgba(0, 10, 30, 0.4);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
      background:
        radial-gradient(600px 600px at 8% 0%, rgba(50, 110, 255, 0.16), transparent 60%),
        radial-gradient(650px 650px at 92% 85%, rgba(0, 200, 240, 0.08), transparent 60%),
        var(--bg-deep);
      color: var(--text-hi);
      line-height: 1.75;
      min-height: 100vh;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    ::selection {
      background: rgba(61, 126, 255, 0.45);
      color: #fff;
    }

    h1, h2, h3, h4 {
      margin: 0;
      line-height: 1.35;
    }

    p {
      margin: 0;
    }

    ul,
    ol {
      margin: 0;
      padding: 0;
      list-style: none;
    }

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

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

    button {
      font-family: inherit;
    }

    input,
    button,
    textarea {
      font: inherit;
    }

    a:focus-visible,
    button:focus-visible,
    summary:focus-visible {
      outline: 2px solid var(--blue-band);
      outline-offset: 2px;
      border-radius: 6px;
    }

    .app-layout {
      display: grid;
      grid-template-columns: 96px minmax(0, 1fr);
      min-height: 100vh;
    }

    .container-page {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 32px;
    }

    .left-rail {
      position: fixed;
      top: 0;
      left: 0;
      z-index: 60;
      width: 96px;
      height: 100vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 18px 0 16px;
      background: rgba(7, 11, 20, 0.92);
      border-right: 1px solid var(--stroke-glass);
      backdrop-filter: blur(14px);
    }

    .rail-brand {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
      padding: 0 6px;
    }

    .rail-logo {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      font-size: 24px;
      font-weight: 900;
      color: #fff;
      background: linear-gradient(145deg, rgba(61, 126, 255, 0.9), rgba(38, 214, 255, 0.72));
      box-shadow: 0 0 22px rgba(60, 140, 255, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.4);
    }

    .rail-word {
      font-size: 11px;
      line-height: 1.4;
      letter-spacing: 0.12em;
      text-align: center;
      color: var(--text-hi);
    }

    .rail-nav {
      display: flex;
      flex-direction: column;
      gap: 6px;
      width: 100%;
      margin-top: 26px;
      padding: 0 10px;
    }

    .rail-nav a {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 5px;
      padding: 10px 2px;
      border-radius: 12px;
      font-size: 11px;
      text-align: center;
      color: var(--text-low);
      border: 1px solid transparent;
      transition: background .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease;
    }

    .rail-nav a i {
      font-size: 18px;
    }

    .rail-nav a:hover {
      background: rgba(255, 255, 255, 0.05);
      color: var(--text-hi);
      transform: scale(1.03);
    }

    .rail-nav a.active {
      background: rgba(38, 214, 255, 0.08);
      color: var(--cyan-signal);
      box-shadow: inset 2px 0 0 var(--cyan-signal);
    }

    .rail-top {
      width: 40px;
      height: 40px;
      margin-top: auto;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: var(--text-mid);
      border: 1px solid var(--stroke-glass);
      background: rgba(255, 255, 255, 0.04);
      transition: transform .3s ease, color .2s, border-color .2s;
    }

    .rail-top:hover {
      transform: rotate(90deg);
      border-color: var(--stroke-strong);
      color: var(--cyan-signal);
    }

    .site-main {
      grid-column: 2;
      min-width: 0;
    }

    .mobile-header {
      display: none;
    }

    .mobile-drawer {
      display: none;
    }

    .section-space {
      padding: 72px 0;
    }

    .glass-panel {
      background: linear-gradient(160deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
      border: 1px solid var(--stroke-glass);
      border-radius: var(--radius-card);
      backdrop-filter: blur(14px);
      position: relative;
      transition: border-color .3s ease, box-shadow .3s ease;
    }

    .glass-panel::before {
      content: "";
      position: absolute;
      top: 0;
      left: 18px;
      right: 18px;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.45), transparent);
      pointer-events: none;
    }

    .glass-panel:hover {
      border-color: var(--stroke-strong);
      box-shadow: var(--shadow-card);
    }

    .section-title-row {
      max-width: 780px;
      margin-bottom: 34px;
    }

    .section-title-row h2,
    .cta-title {
      font-size: clamp(24px, 3vw, 32px);
      font-weight: 800;
      color: rgba(232, 244, 255, 0.95);
      letter-spacing: -0.2px;
      padding-left: 16px;
      position: relative;
    }

    .section-title-row h2::before,
    .cta-title::before {
      content: "";
      position: absolute;
      left: 0;
      top: 8px;
      bottom: 8px;
      width: 4px;
      border-radius: 999px;
      background: linear-gradient(180deg, var(--blue-band), var(--cyan-signal));
    }

    .section-sub {
      margin-top: 14px;
      color: var(--text-mid);
      font-size: 15px;
      line-height: 1.8;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--cyan-signal);
      letter-spacing: 0.06em;
      font-weight: 600;
    }

    .btn-primary,
    .btn-ghost {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border-radius: 12px;
      font-weight: 700;
      font-size: 15px;
      padding: 12px 22px;
      line-height: 1.4;
      border: 1px solid transparent;
      transition: background .2s, color .2s, transform .2s, box-shadow .2s, border-color .2s;
      cursor: pointer;
    }

    .btn-primary {
      background: linear-gradient(135deg, #3D7EFF, #26D6FF);
      color: #07101f;
      box-shadow: 0 0 24px rgba(60, 140, 255, 0.35);
    }

    .btn-primary:hover {
      filter: brightness(1.12);
      transform: translateY(-2px);
      box-shadow: 0 0 38px rgba(60, 140, 255, 0.42);
    }

    .btn-primary:active {
      transform: translateY(0) scale(0.98);
    }

    .btn-ghost {
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-hi);
      border-color: var(--stroke-glass);
    }

    .btn-ghost:hover {
      border-color: var(--stroke-strong);
      background: rgba(255, 255, 255, 0.08);
      transform: translateY(-2px);
    }

    .btn-ghost:active {
      transform: translateY(0) scale(0.98);
    }

    .crumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 13px;
      color: var(--text-low);
    }

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

    .crumb span {
      opacity: 0.7;
    }

    .hero-bg {
      position: absolute;
      inset: 0;
      background-position: center;
      background-size: cover;
      filter: brightness(0.42);
    }

    .safe-hero {
      position: relative;
      min-height: 560px;
      display: flex;
      align-items: center;
      padding: 72px 0;
      overflow: hidden;
    }

    .safe-hero::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(7, 11, 20, 0.82), rgba(7, 11, 20, 0.32) 62%, rgba(7, 11, 20, 0.44));
      z-index: 1;
      pointer-events: none;
    }

    .hero-inner {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: minmax(0, 1fr) 360px;
      gap: 48px;
      align-items: center;
    }

    .hero-copy h1 {
      margin: 18px 0 18px;
      font-size: clamp(32px, 4vw, 52px);
      font-weight: 800;
      line-height: 1.2;
      letter-spacing: -0.4px;
      color: rgba(240, 248, 255, 0.98);
    }

    .hero-copy h1 span {
      color: var(--cyan-signal);
    }

    .hero-sub {
      max-width: 64ch;
      font-size: 16px;
      line-height: 1.9;
      color: var(--text-mid);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 28px;
    }

    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 26px;
    }

    .hero-tags span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 12px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--stroke-glass);
      border-radius: 999px;
      color: var(--text-mid);
      font-size: 13px;
    }

    .hero-tags i {
      color: var(--cyan-signal);
      font-size: 13px;
    }

    .hero-card {
      overflow: hidden;
    }

    .hero-card-img {
      aspect-ratio: 16 / 9;
      overflow: hidden;
    }

    .hero-card-img img,
    .risk-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s ease;
    }

    .hero-card:hover .hero-card-img img,
    .risk-main:hover .risk-img img {
      transform: scale(1.04);
    }

    .hero-card-body {
      padding: 20px;
    }

    .hero-card-body h3 {
      font-size: 20px;
      margin: 8px 0 6px;
    }

    .hero-card-body p {
      font-size: 14px;
      color: var(--text-mid);
      line-height: 1.7;
    }

    .card-status {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-top: 14px;
      font-size: 13px;
      color: var(--text-low);
    }

    .card-status i {
      color: var(--cyan-signal);
    }

    .check-split {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 360px;
      gap: 28px;
      align-items: stretch;
    }

    .check-list {
      padding: 6px 24px;
    }

    .check-item {
      display: grid;
      grid-template-columns: 48px 1fr;
      gap: 16px;
      padding: 22px 0;
      border-bottom: 1px solid var(--stroke-glass);
    }

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

    .check-num {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      background: rgba(38, 214, 255, 0.08);
      border: 1px solid rgba(38, 214, 255, 0.28);
      color: var(--cyan-signal);
      font-weight: 800;
      font-family: "DIN Alternate", "Inter", "PingFang SC", sans-serif;
      font-variant-numeric: tabular-nums;
    }

    .check-item h3 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-hi);
      margin-bottom: 6px;
    }

    .check-item p {
      font-size: 14px;
      color: var(--text-mid);
      line-height: 1.75;
    }

    .helper-stack {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .helper-quote {
      border-left: 3px solid var(--cyan-signal);
      padding: 4px 0 4px 16px;
      color: var(--text-mid);
      line-height: 1.85;
      font-size: 15px;
      background: rgba(255, 255, 255, 0.02);
    }

    .helper-mini {
      padding: 22px;
    }

    .helper-mini h3 {
      font-size: 16px;
      margin-bottom: 12px;
      color: var(--text-hi);
    }

    .helper-mini ul {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .helper-mini li {
      display: flex;
      gap: 10px;
      color: var(--text-mid);
      font-size: 14px;
      line-height: 1.7;
    }

    .helper-mini li i {
      color: var(--cyan-signal);
      margin-top: 5px;
    }

    .risk-split {
      display: grid;
      grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.8fr);
      gap: 24px;
      align-items: stretch;
    }

    .risk-main {
      display: grid;
      grid-template-columns: 280px minmax(0, 1fr);
      overflow: hidden;
    }

    .risk-img {
      position: relative;
      min-height: 260px;
    }

    .risk-img::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 40%, rgba(7, 11, 20, 0.5));
    }

    .risk-img img {
      height: 100%;
    }

    .risk-main-copy {
      padding: 26px 28px;
    }

    .risk-main-copy h3 {
      font-size: 21px;
      margin: 10px 0 16px;
    }

    .order-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .order-list li {
      display: flex;
      gap: 10px;
      color: var(--text-mid);
      font-size: 14px;
      line-height: 1.75;
    }

    .order-list li strong {
      color: var(--text-hi);
      white-space: nowrap;
    }

    .risk-mini-stack {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .risk-mini {
      flex: 1;
      padding: 22px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .risk-mini h4 {
      font-size: 16px;
      color: var(--text-hi);
      margin-bottom: 4px;
    }

    .risk-mini p,
    .risk-mini span {
      color: var(--text-mid);
      font-size: 14px;
      line-height: 1.7;
    }

    .faq-panel {
      padding: 6px 26px;
      border-radius: 20px;
    }

    .faq-panel details {
      border-bottom: 1px solid var(--stroke-glass);
      padding: 12px 0;
    }

    .faq-panel details:last-child {
      border-bottom: 0;
    }

    .faq-panel summary {
      list-style: none;
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 18px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-hi);
      padding: 12px 0;
      cursor: pointer;
      transition: color .2s;
    }

    .faq-panel summary::-webkit-details-marker {
      display: none;
    }

    .faq-panel summary::after {
      content: "+";
      flex: 0 0 auto;
      font-size: 22px;
      line-height: 1;
      color: var(--cyan-signal);
      transition: transform .25s ease;
      margin-top: -2px;
    }

    .faq-panel details[open] summary {
      color: #fff;
    }

    .faq-panel details[open] summary::after {
      transform: rotate(45deg);
    }

    .faq-answer {
      padding: 2px 30px 16px 0;
      color: var(--text-mid);
      font-size: 15px;
      line-height: 1.85;
    }

    .cta-panel {
      position: relative;
      padding: 40px;
      border-radius: 20px;
      overflow: hidden;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
      background: linear-gradient(160deg, rgba(61, 126, 255, 0.16), rgba(38, 214, 255, 0.05)), rgba(255, 255, 255, 0.03);
      border: 1px solid var(--stroke-strong);
      box-shadow: 0 18px 50px rgba(0, 10, 30, 0.3);
    }

    .cta-copy {
      max-width: 680px;
    }

    .cta-copy p {
      margin-top: 12px;
      color: var(--text-mid);
      line-height: 1.85;
      font-size: 15px;
    }

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

    .site-footer {
      grid-column: 2;
      background: rgba(4, 8, 16, 0.9);
      border-top: 1px solid var(--stroke-glass);
      padding: 56px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 0.9fr 0.9fr 1fr;
      gap: 40px;
    }

    .footer-brand {
      font-size: 19px;
      font-weight: 800;
      display: flex;
      flex-direction: column;
      gap: 12px;
      color: var(--text-hi);
    }

    .footer-brand small {
      font-size: 13px;
      font-weight: 400;
      color: var(--text-mid);
      line-height: 1.7;
      max-width: 32ch;
    }

    .footer-title {
      font-size: 14px;
      font-weight: 700;
      letter-spacing: 0.1em;
      color: var(--text-hi);
      margin-bottom: 14px;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 14px;
      color: var(--text-mid);
    }

    .footer-links a {
      transition: color .2s;
    }

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

    .footer-copyright {
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 36px;
      padding-top: 18px;
      border-top: 1px solid var(--stroke-glass);
      font-size: 13px;
      color: var(--text-low);
    }

    @media (max-width: 1180px) {
      .hero-inner {
        grid-template-columns: minmax(0, 1fr) 320px;
        gap: 30px;
      }

      .risk-main {
        grid-template-columns: 240px minmax(0, 1fr);
      }
    }

    @media (max-width: 1023px) {
      .app-layout {
        display: block;
        padding-top: 60px;
      }

      .left-rail {
        display: none;
      }

      .site-main,
      .site-footer {
        grid-column: auto;
      }

      .mobile-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 80;
        height: 60px;
        padding: 0 20px;
        background: rgba(7, 11, 20, 0.92);
        backdrop-filter: blur(14px);
        border-bottom: 1px solid var(--stroke-glass);
      }

      .mobile-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        color: var(--text-hi);
        font-weight: 800;
        font-size: 16px;
      }

      .mobile-logo {
        width: 34px;
        height: 34px;
        border-radius: 10px;
        display: grid;
        place-items: center;
        background: linear-gradient(135deg, var(--blue-band), var(--cyan-signal));
        color: #07101f;
        font-weight: 900;
        font-size: 18px;
      }

      .menu-toggle {
        width: 42px;
        height: 42px;
        border-radius: 10px;
        border: 1px solid var(--stroke-glass);
        background: rgba(255, 255, 255, 0.04);
        color: var(--text-hi);
        font-size: 18px;
        display: grid;
        place-items: center;
      }

      .menu-toggle:hover {
        border-color: var(--stroke-strong);
      }

      .mobile-drawer {
        display: flex;
        flex-direction: column;
        position: fixed;
        inset: 0;
        z-index: 100;
        background: rgba(7, 11, 20, 0.97);
        backdrop-filter: blur(18px);
        padding: 24px 20px;
        transform: translateX(102%);
        transition: transform .3s ease;
      }

      .mobile-drawer.open {
        transform: translateX(0);
      }

      .mobile-drawer-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 20px;
        color: var(--text-hi);
        font-weight: 800;
        font-size: 18px;
      }

      .drawer-close {
        width: 42px;
        height: 42px;
        border-radius: 12px;
        border: 1px solid var(--stroke-glass);
        background: rgba(255, 255, 255, 0.05);
        color: var(--text-hi);
        font-size: 18px;
        display: grid;
        place-items: center;
      }

      .mobile-nav {
        display: flex;
        flex-direction: column;
        gap: 6px;
        overflow-y: auto;
        flex: 1;
        padding-bottom: 30px;
      }

      .mobile-nav a {
        display: flex;
        align-items: center;
        gap: 16px;
        padding: 15px 12px;
        border-radius: 12px;
        font-size: 17px;
        font-weight: 600;
        color: var(--text-mid);
        border: 1px solid transparent;
      }

      .mobile-nav a i {
        width: 24px;
        text-align: center;
        color: var(--text-low);
      }

      .mobile-nav a:hover {
        background: rgba(255, 255, 255, 0.05);
        color: var(--text-hi);
      }

      .mobile-nav a.active {
        color: var(--cyan-signal);
        background: rgba(38, 214, 255, 0.08);
        border-color: rgba(38, 214, 255, 0.16);
      }

      .mobile-nav a.active i {
        color: var(--cyan-signal);
      }

      .check-split,
      .risk-split {
        grid-template-columns: minmax(0, 1fr);
      }

      .risk-main {
        grid-template-columns: 260px minmax(0, 1fr);
      }

      .risk-img {
        min-height: 220px;
      }

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

    @media (max-width: 768px) {
      .section-space {
        padding: 52px 0;
      }

      .container-page {
        padding: 0 20px;
      }

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

      .hero-card {
        width: 100%;
        max-width: 420px;
      }

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

      .risk-main {
        grid-template-columns: 1fr;
      }

      .risk-main-copy {
        padding: 20px;
      }

      .risk-img {
        min-height: 220px;
      }

      .section-title-row h2 {
        font-size: 24px;
      }

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

      .cta-panel {
        padding: 26px 20px;
      }

      .cta-actions {
        width: 100%;
      }

      .cta-actions .btn-primary,
      .cta-actions .btn-ghost {
        flex: 1;
        min-width: 140px;
      }

      .faq-panel {
        padding: 4px 16px;
      }
    }

    @media (max-width: 520px) {
      .hero-copy h1 {
        font-size: 30px;
      }

      .hero-sub {
        font-size: 15px;
      }

      .hero-tags {
        gap: 8px;
      }

      .check-list {
        padding: 2px 14px;
      }

      .check-item {
        grid-template-columns: 38px 1fr;
        gap: 12px;
        padding: 18px 0;
      }

      .check-num {
        width: 36px;
        height: 36px;
        font-size: 14px;
      }

      .faq-answer {
        padding-right: 18px;
        font-size: 14px;
      }

      .footer-copyright {
        flex-direction: column;
      }
    }