/* roulang page: index */
:root {
  --primary: #5B4ED1;
  --primary-deep: #332C6B;
  --accent: #F5B84A;
  --accent-light: #FFC96B;
  --bg: #080A12;
  --card: #11172B;
  --surface: #171F37;
  --border: rgba(255,255,255,0.08);
  --header: #0E1322;
  --text-title: #F4F6FD;
  --text-body: #C7CCDC;
  --text-muted: #8C93AC;
  --mint: #70C7C2;
  --paper: #F7F3EA;
  --ink-text: #1A1E2B;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 14px;
  --shadow-lg: 0 24px 80px rgba(2,4,18,.45);
  --shadow-glow: 0 12px 36px rgba(245,184,74,.18);
  --container-w: 1240px;
  --font-stack: "PingFang SC","Microsoft YaHei","Noto Sans CJK SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-stack);
  background: var(--bg);
  color: var(--text-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color .2s ease;
}
img {
  display: block;
  max-width: 100%;
}
button, input {
  font-family: inherit;
  border: none;
  background: none;
}
button {
  cursor: pointer;
}
ul, ol {
  list-style: none;
}

.container {
  width: min(100% - 48px, var(--container-w));
  margin-inline: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  white-space: nowrap;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease, background .25s ease;
}
.btn-primary {
  background: linear-gradient(120deg, var(--accent-light), var(--accent));
  color: #1B1626;
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(245,184,74,.30);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 14px rgba(0,0,0,.4);
}
.btn-ghost {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.16);
  color: #F4F6FD;
}
.btn-ghost:hover {
  border-color: rgba(255,255,255,.5);
  background: rgba(255,255,255,.08);
  transform: translateY(-2px);
}
.btn-ghost:active {
  transform: translateY(0);
}
.btn-download {
  position: relative;
  background: var(--surface);
  color: #F4F6FD;
  border: 1px solid rgba(255,255,255,.16);
  padding: 0 22px;
}
.btn-download strong {
  color: var(--accent-light);
  font-weight: 700;
  margin-right: 6px;
}
.btn-download small {
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 400;
}
.btn-download:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(245,184,74,.14);
}
.btn-download svg {
  width: 18px;
  height: 18px;
  color: var(--accent);
}
.btn:focus-visible,
.nav-link:focus-visible,
.nav-logo:focus-visible,
.panel-tab:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 6px;
}

/* Header / Topbar */
.site-header {
  position: relative;
  z-index: 50;
}
.topbar {
  background: #06070D;
  color: var(--text-muted);
  border-bottom: 1px solid rgba(255,255,255,.04);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 40px;
  gap: 24px;
  font-size: 13px;
}
.topbar-tag {
  color: #C7CCDC;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
}
.topbar-tag .dot {
  width: 6px;
  height: 6px;
  border-radius: 99px;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(245,184,74,.13);
  display: inline-block;
}
.topbar-msg {
  color: var(--text-muted);
  letter-spacing: .2px;
}
.topbar-side {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  color: var(--text-muted);
}
.topbar-side span {
  color: #AEB5C8;
}
.topbar-side .star-icon {
  color: var(--accent);
  font-size: 12px;
}
.main-nav {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(7,9,18,.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.main-nav.is-sticky {
  background: rgba(6,8,15,.98);
  border-bottom-color: rgba(255,255,255,.06);
  box-shadow: 0 16px 30px rgba(0,0,0,.32);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 22px;
  position: relative;
}
.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
}
.logo-mark {
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, #6D5AE6, #332C6B);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 20px rgba(91,78,209,.3), inset 0 1px 1px rgba(255,255,255,.2);
}
.logo-mark svg {
  width: 21px;
  height: 21px;
  color: #FFE1A1;
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}
.logo-cn {
  color: #F4F6FD;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: .4px;
}
.logo-sub {
  color: var(--text-muted);
  font-size: 11px;
  letter-spacing: .6px;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3.2vw, 36px);
}
.nav-menu li {
  position: relative;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 500;
  color: #C9CEE0;
  font-size: 15px;
  position: relative;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width .3s ease;
}
.nav-link:hover,
.nav-link.active {
  color: #ffffff;
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 22px;
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}
.cta-btn {
  min-height: 44px;
  padding: 0 22px;
  background: linear-gradient(110deg, var(--accent-light), var(--accent));
  color: #1A141F;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 8px 22px rgba(245,184,74,.2);
  transition: all .3s ease;
}
.cta-btn:hover {
  transform: scale(1.02);
  box-shadow: 0 12px 32px rgba(245,184,74,.32);
}
.hamburger {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border: 1px solid rgba(255,255,255,.1);
  transition: border .2s ease;
}
.hamburger:hover {
  border-color: var(--accent);
}
.hamburger span {
  width: 20px;
  height: 2px;
  background: #E6E8F2;
  border-radius: 2px;
  display: block;
  transition: all .3s ease;
}
.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  padding: clamp(64px, 8vw, 120px) 0 clamp(64px, 7vw, 100px);
  background: radial-gradient(ellipse at 72% 24%, rgba(91,78,209,.28), transparent 50%), radial-gradient(circle at 18% 62%, rgba(245,184,74,.08), transparent 40%), var(--bg);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: .34;
}
.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(94deg, rgba(6,8,18,.92) 0%, rgba(8,10,18,.72) 50%, rgba(17,23,43,.5) 100%);
}
.hero-stars {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(2px 2px at 22px 32px, rgba(255,255,255,.8) 50%, transparent 51%), radial-gradient(1px 1px at 120px 80px, rgba(255,255,255,.7) 50%, transparent 51%), radial-gradient(1px 1px at 300px 40px, rgba(245,184,74,.7) 50%, transparent 51%), radial-gradient(2px 2px at 450px 150px, rgba(255,255,255,.6) 50%, transparent 51%), radial-gradient(1px 1px at 700px 90px, rgba(255,255,255,.5) 50%, transparent 51%), radial-gradient(1px 1px at 980px 180px, rgba(255,255,255,.55) 50%, transparent 51%);
  opacity: .5;
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  gap: 48px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245,184,74,.1);
  border: 1px solid rgba(245,184,74,.25);
  color: var(--accent-light);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
  letter-spacing: .3px;
}
.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 99px;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(245,184,74,.16);
}
.hero h1 {
  font-size: clamp(32px, 4.6vw, 56px);
  line-height: 1.22;
  color: var(--text-title);
  font-weight: 800;
  letter-spacing: -.6px;
  position: relative;
}
.hero h1 .grad {
  background: linear-gradient(110deg, #8A7CFF, #C9A7FD);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-desc {
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-body);
  margin-top: 20px;
  max-width: 520px;
}
.hero-feature-list {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 26px;
}
.hero-feature-list li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: #DDE1EE;
}
.hero-feature-list li svg {
  width: 17px;
  height: 17px;
  color: var(--accent);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
  align-items: center;
}
.hero-note {
  margin-top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.hero-note .safe-dot {
  width: 7px;
  height: 7px;
  background: var(--mint);
  border-radius: 99px;
  box-shadow: 0 0 0 3px rgba(112,199,194,.12);
}
.hero-visual {
  position: relative;
}
.hero-shot {
  border-radius: 24px;
  padding: 16px;
  background: linear-gradient(145deg, rgba(255,255,255,.1), rgba(255,255,255,.02));
  border: 1px solid rgba(255,255,255,.14);
  box-shadow: var(--shadow-lg);
}
.hero-shot img {
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,.08);
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.hero-badge {
  position: absolute;
  right: -8px;
  bottom: 26px;
  background: rgba(17,23,43,.92);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 16px;
  padding: 14px 18px;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
}
.hero-badge-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: rgba(245,184,74,.16);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.hero-badge-text small {
  display: block;
  color: var(--text-muted);
  font-size: 12px;
}
.hero-badge-text strong {
  color: #F4F6FD;
  font-size: 14px;
  font-weight: 600;
}
@media (max-width:1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-visual {
    order: 2;
  }
  .hero-desc {
    max-width: 100%;
  }
}

/* Stats */
.stats-section {
  padding: 0 0 clamp(48px, 6vw, 80px);
  margin-top: -36px;
  position: relative;
  z-index: 3;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 18px;
}
.stat-card {
  background: linear-gradient(145deg, #151C32, #10162A);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 20px;
  padding: 30px 22px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform .3s ease, border-color .3s ease;
}
.stat-card:hover {
  transform: translateY(-4px);
  border-color: rgba(245,184,74,.3);
}
.stat-card::after {
  content: "";
  position: absolute;
  width: 70px;
  height: 70px;
  border-radius: 99px;
  background: radial-gradient(circle, rgba(91,78,209,.3), transparent 70%);
  top: -20px;
  right: -20px;
}
.stat-star {
  position: absolute;
  top: 12px;
  right: 14px;
  color: var(--accent);
  opacity: .5;
  font-size: 16px;
}
.stat-num {
  font-size: 38px;
  line-height: 1.1;
  font-weight: 800;
  color: var(--accent-light);
  letter-spacing: -1px;
  font-variant-numeric: tabular-nums;
}
.stat-unit {
  font-size: 15px;
  color: var(--text-muted);
  font-weight: 500;
  margin-left: 3px;
}
.stat-label {
  margin-top: 10px;
  color: #C7CCDC;
  font-size: 14px;
}
@media (max-width: 820px) {
  .stats-grid {
    grid-template-columns: repeat(2,1fr);
  }
}
@media (max-width: 480px) {
  .stats-grid {
    gap: 10px;
  }
  .stat-card {
    padding: 20px 14px;
  }
  .stat-num {
    font-size: 30px;
  }
}

/* Section 通用 */
.section {
  padding-block: clamp(56px, 7vw, 96px);
  position: relative;
}
.section-head {
  max-width: 680px;
  margin-bottom: 46px;
}
.section-head.align-center {
  margin-inline: auto;
  text-align: center;
}
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.section-kicker::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--accent);
}
.section-title {
  color: var(--text-title);
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.5px;
}
.section-sub {
  color: var(--text-muted);
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.8;
}
.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-light);
  font-weight: 600;
  font-size: 14px;
  transition: gap .25s ease;
}
.arrow-link:hover {
  gap: 11px;
}
.arrow-link svg {
  width: 15px;
  height: 15px;
}

/* value cards */
.values-section {
  background: linear-gradient(180deg, rgba(12,15,25,0) 0%, #0A0E1A 100%);
}
.value-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr 1fr;
}
.value-card {
  background: linear-gradient(145deg, #121A33, #0E1426);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg);
  padding: 30px;
  position: relative;
  overflow: hidden;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.value-card:hover {
  transform: translateY(-4px);
  border-color: rgba(112,199,194,.22);
  box-shadow: 0 18px 44px rgba(0,0,0,.35);
}
.value-card.big-card {
  grid-row: span 2;
  background: linear-gradient(140deg, #171F3F 0%, #0D1225 100%);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 380px;
}
.value-card.big-card::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -60px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(91,78,209,.28), transparent 60%);
  pointer-events: none;
}
.value-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: rgba(91,78,209,.2);
  border: 1px solid rgba(255,255,255,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  color: #C6BDFF;
}
.value-icon i {
  font-size: 24px;
}
.value-card.big-card .value-icon {
  width: 60px;
  height: 60px;
  font-size: 27px;
  background: rgba(245,184,74,.15);
  color: var(--accent-light);
}
.value-title {
  color: var(--text-title);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: .2px;
}
.value-title.lg {
  font-size: 24px;
}
.value-text {
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.85;
}
.value-feature-list {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}
.value-feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: #D9DCEA;
}
.value-feature-list li svg {
  width: 18px;
  height: 18px;
  margin-top: 4px;
  color: var(--mint);
  flex: 0 0 18px;
}
@media (max-width: 760px) {
  .value-grid {
    grid-template-columns: 1fr;
  }
  .value-card.big-card {
    grid-row: auto;
    min-height: 0;
  }
}

/* Showcase carousel */
.showcase-shell {
  background: radial-gradient(ellipse at 60% 80%, rgba(91,78,209,.12), transparent 60%);
}
.showcase-panel {
  position: relative;
  border-radius: 26px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.1);
  background: #0F1527;
  box-shadow: var(--shadow-lg);
}
.slider-viewport {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  display: flex;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.slider-viewport::-webkit-scrollbar {
  display: none;
}
.slide-item {
  scroll-snap-align: center;
  flex: 0 0 100%;
  min-width: 100%;
  position: relative;
  scroll-snap-stop: always;
}
.slide-item img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}
.slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(95deg, rgba(6,8,18,.6), transparent 55%);
  display: flex;
  align-items: flex-end;
  padding: 34px;
}
.slide-info {
  color: #fff;
  max-width: 420px;
}
.slide-tag {
  font-size: 12px;
  display: inline-flex;
  color: var(--accent);
  border: 1px solid rgba(245,184,74,.3);
  background: rgba(245,184,74,.16);
  padding: 4px 12px;
  border-radius: 99px;
  margin-bottom: 12px;
  letter-spacing: .4px;
}
.slide-info h3 {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
}
.slide-info p {
  font-size: 14px;
  color: rgba(255,255,255,.8);
  margin-top: 8px;
}
.slider-control {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 22px;
  justify-content: flex-end;
}
.slider-dots {
  display: flex;
  gap: 8px;
}
.slider-dots button {
  width: 8px;
  height: 8px;
  border-radius: 99px;
  background: rgba(255,255,255,.2);
  transition: all .3s ease;
}
.slider-dots button.active {
  width: 28px;
  background: var(--accent);
}
.slider-arrow {
  width: 42px;
  height: 42px;
  border-radius: 99px;
  border: 1px solid rgba(255,255,255,.16);
  color: #DDE1EE;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all .25s ease;
  background: rgba(255,255,255,.04);
}
.slider-arrow:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: scale(1.05);
}

/* Requirement */
.req-section {
  background: linear-gradient(180deg, #0A0E1A, #080A12);
}
.req-grid {
  display: grid;
  grid-template-columns: repeat(12,1fr);
  gap: 32px;
  align-items: center;
}
.req-visual {
  grid-column: span 5;
  border-radius: 24px;
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(255,255,255,.1);
  min-height: 300px;
}
.req-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
}
.req-content {
  grid-column: span 7;
}
.req-os-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  margin-bottom: 28px;
}
.req-os-list li {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 99px;
  padding: 9px 18px;
  font-size: 14px;
  color: #DDE1EE;
}
.req-os-list li svg {
  width: 17px;
  height: 17px;
  color: var(--accent);
}
.req-spec-list {
  display: grid;
  gap: 1px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 16px;
  overflow: hidden;
}
.req-spec-row {
  display: grid;
  grid-template-columns: 150px 1fr;
  background: #10162B;
}
.req-spec-row:nth-child(even) {
  background: #0E1426;
}
.req-spec-key {
  padding: 15px 18px;
  color: var(--text-muted);
  font-size: 14px;
  border-right: 1px solid rgba(255,255,255,.04);
}
.req-spec-val {
  padding: 15px 18px;
  color: #F4F6FD;
  font-weight: 500;
  font-size: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: center;
}
.req-ver {
  display: inline-flex;
  background: rgba(245,184,74,.14);
  border: 1px solid rgba(245,184,74,.3);
  color: var(--accent-light);
  font-size: 12px;
  border-radius: 99px;
  padding: 2px 10px;
  font-weight: 600;
  margin-left: 6px;
}
.mint-tag {
  color: var(--mint);
  font-size: 13px;
}
@media (max-width: 960px) {
  .req-visual {
    grid-column: span 12;
    min-height: 220px;
  }
  .req-content {
    grid-column: span 12;
  }
}
@media (max-width: 620px) {
  .req-spec-row {
    grid-template-columns: 1fr;
  }
  .req-spec-key {
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,.04);
    padding-bottom: 8px;
  }
}

/* Reviews */
.review-bg {
  background: radial-gradient(ellipse at 20% 20%, rgba(245,184,74,.1), transparent 30%), radial-gradient(ellipse at 80% 20%, rgba(91,78,209,.18), transparent 30%);
}
.reviews-grid {
  columns: 2;
  column-gap: 24px;
}
.review-card {
  break-inside: avoid;
  background: #10162B;
  border: 1px solid rgba(255,255,255,.07);
  border-radius: 18px;
  padding: 24px;
  margin-bottom: 22px;
  transition: all .3s ease;
}
.review-card:hover {
  border-color: rgba(255,255,255,.14);
  transform: translateY(-2px);
}
.review-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.stars {
  color: var(--accent);
  display: inline-flex;
  gap: 3px;
  font-size: 14px;
  letter-spacing: 1px;
}
.reviewer {
  font-size: 14px;
  color: #AEB6CA;
  font-weight: 600;
}
.review-text {
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.85;
}
@media (max-width: 680px) {
  .reviews-grid {
    columns: 1;
  }
}

/* News / CMS */
.news-section {
  background: #080A12;
  overflow: hidden;
}
.news-wrap {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 26px;
}
.news-guide {
  grid-column: span 4;
  background: linear-gradient(145deg, #151D38, #10152A);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 24px;
  padding: 32px;
  position: relative;
  overflow: hidden;
}
.news-guide::after {
  content: "";
  position: absolute;
  right: -50px;
  bottom: -60px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(245,184,74,.14), transparent 65%);
}
.news-guide-icon {
  width: 52px;
  height: 52px;
  border-radius: 15px;
  background: rgba(245,184,74,.14);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 24px;
  margin-bottom: 22px;
}
.news-guide h3 {
  color: var(--text-title);
  font-size: 20px;
  margin-bottom: 12px;
}
.news-guide p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 22px;
}
.guide-list {
  display: grid;
  gap: 12px;
}
.guide-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #D9DCEA;
  font-size: 14px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.05);
  border-radius: 12px;
  padding: 9px 14px;
}
.guide-list li::before {
  content: "✦";
  color: var(--accent);
  font-size: 12px;
}
.news-content {
  grid-column: span 8;
}
.cms-panel {
  background: #0E1426;
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 24px;
  padding: 30px;
  min-height: 360px;
}
.cms-list {
  display: grid;
  gap: 8px;
}
.cms-item {
  padding: 20px 22px;
  background: rgba(255,255,255,.025);
  border: 1px solid transparent;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  transition: background .25s ease, border-color .25s ease;
}
.cms-item:hover {
  background: rgba(255,255,255,.05);
  border-color: rgba(255,255,255,.08);
}
.cms-item-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.cms-cat {
  display: inline-flex;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 99px;
  background: rgba(91,78,209,.2);
  border: 1px solid rgba(120,110,255,.2);
  color: #BFB8FF;
  flex: 0 0 auto;
}
.cms-time {
  font-size: 12px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.cms-time svg {
  width: 13px;
  height: 13px;
}
.cms-link {
  color: var(--text-title);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.5;
  transition: color .2s ease;
}
.cms-link:hover {
  color: var(--accent-light);
}
.cms-summary {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
  margin-top: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.cms-empty {
  padding: 28px 10px;
  color: var(--text-muted);
  font-size: 15px;
  text-align: center;
  background: rgba(255,255,255,.02);
  border-radius: 16px;
}
.cms-more-btn {
  margin-top: 22px;
}
@media (max-width: 1024px) {
  .news-guide,
  .news-content {
    grid-column: span 12;
  }
  .news-guide {
    order: 2;
  }
}

/* FAQ */
.faq-section {
  background: #0A0D17;
}
.faq-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.4fr;
  gap: 42px;
  align-items: start;
}
.faq-aside{
  position: sticky;
  top: 100px;
}
.faq-aside h2 {
  color: var(--text-title);
}
.faq-desc-text{
  margin-top: 12px;
}
.faq-list {
  display: grid;
  gap: 10px;
}
.faq-item {
  background: #10162B;
  border: 1px solid rgba(255,255,255,.07);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color .3s ease;
}
.faq-item[open] {
  border-color: rgba(245,184,74,.3);
  background: #121831;
}
.faq-question {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  color: #F4F6FD;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  min-height: 66px;
  position: relative;
  transition: color .2s ease;
}
.faq-question::-webkit-details-marker {
  display: none;
}
.faq-question::after {
  content: "+";
  margin-left: auto;
  font-size: 24px;
  font-weight: 300;
  color: var(--accent);
  transition: transform .3s ease;
}
.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
  color: var(--accent-light);
}
.faq-answer {
  padding: 0 24px 24px;
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.85;
  max-width: 780px;
}
.faq-answer p + p {
  margin-top: 12px;
}
.faq-question:hover {
  color: #fff;
}
@media (max-width: 900px) {
  .faq-layout {
    grid-template-columns: 1fr;
  }
  .faq-aside {
    position: static;
  }
}

/* CTA */
.cta-section {
  padding-block: clamp(64px, 7vw, 96px);
}
.cta-panel {
  position: relative;
  background: linear-gradient(140deg, var(--primary-deep) 0%, #4A3D9E 40%, #251F50 100%);
  border-radius: 28px;
  padding: clamp(40px, 6vw, 76px);
  text-align: center;
  overflow: hidden;
  color: #fff;
}
.cta-panel::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -100px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(245,184,74,.2), transparent 62%);
}
.cta-panel::after {
  content: "";
  position: absolute;
  bottom: -100px;
  left: -80px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,.1), transparent 65%);
}
.cta-content {
  position: relative;
  z-index: 2;
}
.cta-content h2 {
  font-size: clamp(24px, 3.4vw, 40px);
  font-weight: 800;
  color: #fff;
  line-height: 1.35;
}
.cta-content p {
  color: rgba(255,255,255,.86);
  font-size: 16px;
  max-width: 620px;
  margin: 18px auto 0;
  line-height: 1.85;
}
.cta-buttons {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}
.trust-mini {
  margin-top: 26px;
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 20px;
  font-size: 13px;
  color: rgba(255,255,255,.7);
}
.trust-mini span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.trust-mini .tdot {
  width: 6px;
  height: 6px;
  border-radius: 99px;
  display: inline-block;
}
.tdot-green {
  background: var(--mint);
  box-shadow: 0 0 0 3px rgba(112,199,194,.15);
}
.tdot-amber {
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(245,184,74,.12);
}

/* Footer */
.footer {
  background: #06080F;
  border-top: 1px solid rgba(255,255,255,.06);
}
.footer-info-line {
  background: rgba(255,255,255,.02);
  border-bottom: 1px solid rgba(255,255,255,.05);
  padding: 14px 0;
}
.footer-info-line .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}
.f-info {
  font-size: 13px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.f-info .sep {
  color: rgba(255,255,255,.12);
  margin: 0 3px;
}
.footer-main {
  padding: 58px 0 38px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 46px;
}
.footer-brand {
  max-width: 380px;
}
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.footer-brand-text {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.85;
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(2,1fr);
  gap: 28px;
}
.footer-col h4 {
  color: #E9EBF3;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col ul {
  display: grid;
  gap: 10px;
}
.footer-col ul a {
  color: var(--text-muted);
  font-size: 14px;
  transition: color .2s ease;
}
.footer-col ul a:hover {
  color: var(--accent-light);
}
.footer-copy {
  margin-top: 50px;
  padding-top: 26px;
  border-top: 1px solid rgba(255,255,255,.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--text-muted);
  font-size: 13px;
}
@media (max-width: 720px) {
  .footer-grid{
    grid-template-columns: 1fr;
  }
  .footer-cols{
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 420px) {
  .footer-cols{
    grid-template-columns: 1fr;
  }
}

/* misc */
.mt-24{margin-top:24px}.mt-32{margin-top:32px}.mt-40{margin-top:40px}
.mobile-nav {
  display: none;
}
@media (max-width: 1024px) {
  .nav-menu {
    display: none;
  }
  .hamburger {
    display: inline-flex;
  }
  .mobile-nav-panel {
    display: none;
    position: fixed;
    top: 118px;
    right: 18px;
    left: 18px;
    background: #0B0F1D;
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 18px;
    padding: 18px;
    z-index: 70;
    box-shadow: var(--shadow-lg);
  }
  .mobile-nav-panel.open {
    display: block;
  }
  .mobile-nav-panel ul {
    display: grid;
    gap: 6px;
  }
  .mobile-nav-panel a {
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 48px;
    padding: 0 16px;
    border-radius: 12px;
    font-size: 16px;
    color: #D9DCEA;
    font-weight: 500;
  }
  .mobile-nav-panel a.active {
    background: rgba(91,78,209,.18);
    color: #fff;
  }
  .mobile-nav-panel a:hover {
    background: rgba(255,255,255,.06);
  }
  .mobile-nav-cta {
    margin-top: 10px;
    border-top: 1px solid rgba(255,255,255,.08);
    padding-top: 14px;
  }
}

/* roulang page: article */
:root{
  --bg:#080a12;
  --surface:#11172b;
  --surface2:#171f37;
  --line:rgba(255,255,255,.08);
  --purple:#6d5ae6;
  --purple-deep:#3d2d8f;
  --amber:#f5b84a;
  --amber-light:#ffc96b;
  --white:#f4f6fd;
  --text:#c7ccdc;
  --muted:#8c93ac;
  --paper:#f7f3ea;
  --ink:#1a1e2b;
  --paper-muted:#a89e8f;
  --radius-round:999px;
  --radius-card:16px;
  --radius-large:24px;
  --shadow-card:0 12px 32px rgba(0,0,0,.18);
  --shadow-amber:0 12px 32px rgba(245,184,74,.2);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:inline-block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button{font-family:inherit}
ul{list-style:none}
.container{width:min(1240px,calc(100% - 40px));margin-left:auto;margin-right:auto}
.section{padding:64px 0}

/* 顶部信息条 */
.topbar{
  background:#05080f;
  border-bottom:1px solid rgba(255,255,255,.04);
  color:var(--muted);
  font-size:13px;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:40px;
  gap:14px;
}
.topbar-site{color:var(--white);font-weight:600;letter-spacing:.4px}
.topbar-message{
  color:var(--text);
  display:inline-flex;
  align-items:center;
  gap:6px;
  letter-spacing:.4px;
}
.topbar-message .topbar-star{color:var(--amber);font-size:12px}
.topbar-link{
  color:var(--amber);
  font-weight:600;
  letter-spacing:.4px;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.topbar-link:hover{text-decoration:underline}
@media(max-width:640px){
  .topbar-message{display:none}
  .topbar-inner{height:38px}
}

/* 主导航 */
.mainnav{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(8,10,18,.95);
  border-bottom:1px solid rgba(255,255,255,.062);
  transition:box-shadow .25s ease, background .25s ease;
}
.mainnav.scrolled{
  background:rgba(6,8,15,.98);
  box-shadow:0 14px 34px rgba(0,0,0,.28);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:16px;
  height:76px;
}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;
  display:grid;
  place-items:center;
  border-radius:12px;
  background:linear-gradient(135deg,var(--purple),var(--purple-deep));
  color:var(--amber-light);
  box-shadow:0 6px 18px rgba(109,90,230,.35);
}
.logo-text{display:flex;flex-direction:column;line-height:1.1;gap:3px}
.logo-cn{
  color:var(--white);
  font-size:18px;
  font-weight:700;
  letter-spacing:1.2px;
}
.logo-sub{
  color:var(--muted);
  font-size:9px;
  letter-spacing:2px;
  font-weight:500;
  text-transform:uppercase;
}
.site-nav{flex:1;margin-left:24px;margin-right:12px}
.nav-menu{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:30px;
  margin:0;
  padding:0;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:76px;
  color:var(--text);
  font-size:15px;
  font-weight:500;
  letter-spacing:.3px;
  white-space:nowrap;
  transition:color .2s ease;
}
.nav-link:hover{color:var(--white)}
.nav-link.active{color:var(--white)}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:3px;
  background:linear-gradient(90deg,var(--amber),var(--purple));
  border-radius:var(--radius-round);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
  flex-shrink:0;
}
.btn-nav-dl{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-round);
  background:linear-gradient(135deg,var(--amber),var(--amber-light));
  color:#140f08;
  font-size:15px;
  font-weight:700;
  box-shadow:var(--shadow-amber);
  transition:transform .2s ease, box-shadow .2s ease;
}
.btn-nav-dl:hover{
  transform:translateY(-1px);
  box-shadow:0 16px 38px rgba(245,184,74,.28);
}
.mobile-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border:1px solid rgba(255,255,255,.1);
  border-radius:12px;
  background:var(--surface);
  color:var(--white);
  cursor:pointer;
}
.mobile-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:currentColor;
  border-radius:99px;
  position:relative;
  transition:background .2s ease;
}
.mobile-toggle span::before,.mobile-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:currentColor;
  border-radius:99px;
  transition:transform .2s ease;
}
.mobile-toggle span::before{top:-6px}
.mobile-toggle span::after{top:6px}
.mobile-toggle.active span{background:transparent}
.mobile-toggle.active span::before{transform:translateY(6px) rotate(45deg)}
.mobile-toggle.active span::after{transform:translateY(-6px) rotate(-45deg)}
@media(max-width:991px){
  .site-nav{
    display:none;
    position:absolute;
    top:calc(100% + 1px);
    left:0;
    right:0;
    margin:0;
    background:rgba(10,13,26,.99);
    border-bottom:1px solid rgba(255,255,255,.06);
    padding:12px 20px 16px;
    box-shadow:0 20px 40px rgba(0,0,0,.35);
  }
  .site-nav.menu-open{display:block}
  .nav-menu{
    flex-direction:column;
    align-items:stretch;
    gap:4px;
  }
  .nav-link,.nav-link.active{
    width:100%;
    height:46px;
    padding:0 12px;
    border-radius:10px;
    justify-content:flex-start;
  }
  .nav-link:hover{background:rgba(255,255,255,.04)}
  .nav-link.active{background:rgba(109,90,230,.16);color:#fff}
  .nav-link.active::after{display:none}
  .btn-nav-dl{display:none}
  .mobile-toggle{display:inline-flex}
}
@media(max-width:440px){
  .logo-cn{font-size:16px;letter-spacing:.5px}
  .logo-sub{display:none}
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:52px;
  padding:0 28px;
  border-radius:14px;
  font-size:16px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
}
.btn:focus-visible,.mobile-toggle:focus-visible,.nav-link:focus-visible,.logo:focus-visible,a:focus-visible{
  outline:2px solid var(--amber);
  outline-offset:3px;
}
.btn-primary{
  background:linear-gradient(135deg,var(--amber),var(--amber-light));
  color:#140f08;
  box-shadow:var(--shadow-amber);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(245,184,74,.32)}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 22px rgba(245,184,74,.24)}
.btn-secondary{
  background:transparent;
  border-color:rgba(255,255,255,.18);
  color:var(--white);
}
.btn-secondary:hover{border-color:var(--amber);color:var(--amber);transform:translateY(-2px)}
.btn-secondary:active{transform:translateY(0)}
.btn-sm{height:42px;padding:0 18px;font-size:14px;border-radius:999px}

/* 文章头图区 */
.article-hero{
  position:relative;
  overflow:hidden;
  padding:72px 0 66px;
  text-align:center;
  background:
    radial-gradient(circle at 20% 10%, rgba(109,90,230,.22), transparent 38%),
    radial-gradient(circle at 85% 20%, rgba(245,184,74,.1), transparent 32%),
    linear-gradient(180deg,rgba(4,5,12,.65),rgba(8,10,18,.96)),
    url('/assets/images/backpic/back-2.png') center/cover;
}
.article-hero .container{position:relative;z-index:2}
.crumbs{
  display:flex;
  align-items:center;
  justify-content:center;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:28px;
  color:var(--muted);
  font-size:14px;
}
.crumbs a{color:var(--muted);transition:color .2s ease, transform .2s ease}
.crumbs a:hover{color:var(--amber)}
.crumbs .arrow{color:var(--amber);opacity:.75}
.crumbs .current{color:var(--text)}
.article-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 16px;
  border-radius:var(--radius-round);
  background:rgba(109,90,230,.16);
  border:1px solid rgba(109,90,230,.42);
  color:var(--amber-light);
  font-size:13px;
  letter-spacing:.6px;
  margin-bottom:20px;
}
.article-title{
  color:var(--white);
  font-size:clamp(30px,5vw,50px);
  line-height:1.3;
  font-weight:800;
  max-width:1040px;
  margin:0 auto 24px;
  letter-spacing:.4px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:10px 14px;
  color:var(--muted);
  font-size:14px;
}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-item svg{opacity:.7}
.meta-divider{color:var(--amber);font-size:11px}
@media(max-width:520px){
  .article-hero{padding:52px 0 46px}
}

/* 正文纸面区 */
.article-reader-section{
  padding:52px 0 36px;
  background:
    radial-gradient(circle at 50% 0%, rgba(109,90,230,.12), transparent 45%),
    var(--bg);
}
.article-reader-container{max-width:920px}
.paper-frame{
  border-radius:34px;
  padding:12px;
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.1);
  box-shadow:0 24px 56px rgba(0,0,0,.36);
}
.paper-reader{
  background:var(--paper);
  color:var(--ink);
  border-radius:24px;
  padding:clamp(28px,5vw,60px);
  position:relative;
}
.paper-reader::before{
  content:"";
  position:absolute;
  top:0;
  left:clamp(28px,5vw,60px);
  right:clamp(28px,5vw,60px);
  height:4px;
  background:linear-gradient(90deg,transparent,var(--amber),transparent);
  border-radius:0 0 999px 999px;
}
.cms-article-body{
  font-size:16px;
  line-height:2;
  color:#323744;
  word-break:break-word;
}
.cms-article-body>*:first-child{margin-top:0}
.cms-article-body>*:last-child{margin-bottom:0}
.cms-article-body h2,
.paper-reader h2{
  font-size:26px;
  font-weight:800;
  line-height:1.45;
  color:var(--ink);
  margin:44px 0 16px;
  padding-top:22px;
  border-top:1px solid rgba(26,30,43,.12);
}
.cms-article-body h2:first-child,
.paper-reader h2:first-child{margin-top:0}
.cms-article-body h3,
.paper-reader h3{
  font-size:20px;
  font-weight:700;
  color:var(--ink);
  margin:30px 0 12px;
}
.cms-article-body p,.paper-reader p{
  margin:0 0 22px;
  color:#3a4050;
}
.cms-article-body a,.paper-reader a{color:#5b4ed1;border-bottom:1px solid rgba(91,78,209,.4);font-weight:500}
.cms-article-body a:hover,.paper-reader a:hover{color:#3d2d8f;border-color:var(--purple-deep)}
.cms-article-body ul,.paper-reader ul,.cms-article-body ol,.paper-reader ol{
  margin:0 0 24px;
  padding-left:1.5em;
  color:#3a4050;
}
.cms-article-body ul,.paper-reader ul{list-style:disc}
.cms-article-body ol,.paper-reader ol{list-style:decimal}
.cms-article-body li,.paper-reader li{margin-bottom:7px;padding-left:4px}
.cms-article-body blockquote,.paper-reader blockquote{
  margin:30px 0;
  padding:18px 24px 18px 28px;
  background:rgba(109,90,230,.07);
  border-left:4px solid var(--purple);
  border-radius:0 14px 14px 0;
  color:#2a2f44;
  font-style:normal;
}
.cms-article-body blockquote p:last-child,.paper-reader blockquote p:last-child{margin-bottom:0}
.cms-article-body img,.paper-reader img{
  border-radius:16px;
  margin:26px 0;
  border:1px solid rgba(26,30,43,.1);
  box-shadow:0 8px 24px rgba(26,30,43,.08);
}
.cms-article-body figure,.paper-reader figure{margin:28px 0}
.cms-article-body figcaption,.paper-reader figcaption{
  text-align:center;
  font-size:13px;
  color:var(--paper-muted);
  margin-top:8px;
}
.cms-article-body pre,.paper-reader pre{
  background:#151a27;
  color:#e8eaf3;
  border-radius:12px;
  padding:18px 20px;
  overflow-x:auto;
  font-size:14px;
  line-height:1.7;
  margin:26px 0;
  border:1px solid rgba(255,255,255,.06);
}
.cms-article-body code,.paper-reader code{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  background:rgba(26,30,43,.07);
  padding:2px 7px;
  border-radius:6px;
  font-size:.92em;
  color:var(--ink);
}
.cms-article-body pre code,.paper-reader pre code{
  background:transparent;
  padding:0;
  color:inherit;
  font-size:.95em;
}
.cms-article-body table,.paper-reader table{
  width:100%;
  border-collapse:collapse;
  margin:28px 0;
  font-size:15px;
}
.cms-article-body th,.paper-reader th{
  background:rgba(109,90,230,.1);
  color:#1a1e2b;
  font-weight:700;
  text-align:left;
  padding:12px 14px;
  border:1px solid rgba(26,30,43,.12);
}
.cms-article-body td,.paper-reader td{
  padding:11px 14px;
  border:1px solid rgba(26,30,43,.1);
  color:#3a4050;
}
.cms-article-body hr,.paper-reader hr{
  border:none;
  border-top:1px solid rgba(26,30,43,.12);
  margin:36px 0;
}
@media(max-width:640px){
  .article-reader-section{padding:36px 0 24px}
  .paper-frame{border-radius:24px;padding:8px}
  .paper-reader{border-radius:18px}
  .cms-article-body{font-size:16px;line-height:1.9}
  .cms-article-body h2,.paper-reader h2{font-size:23px}
  .cms-article-body blockquote,.paper-reader blockquote{padding:16px 16px 16px 20px}
}

/* 空态 + 工具栏 */
.empty-state{
  text-align:center;
  padding:44px 20px 36px;
}
.empty-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:64px;
  height:64px;
  border-radius:24px;
  background:rgba(245,184,74,.14);
  border:1px dashed rgba(245,184,74,.5);
  color:var(--amber);
  font-size:26px;
  margin-bottom:20px;
}
.empty-state h2{font-size:32px;margin:0 0 10px;color:var(--ink)}
.empty-state p{color:#646a80;margin:0 0 14px;font-size:15px}
.btn-empty{
  display:inline-flex;height:48px;padding:0 30px;
  align-items:center;justify-content:center;
  border-radius:999px;
  background:linear-gradient(135deg,var(--amber),var(--amber-light));
  color:#140f08;font-weight:600;margin-top:14px;
  box-shadow:0 10px 28px rgba(245,184,74,.2);
  transition:transform .2s ease,box-shadow .2s ease;
}
.btn-empty:hover{transform:translateY(-2px)}

/* 文章底部附加 */
.article-extras{
  padding:20px 0 30px;
  background:
    radial-gradient(circle at 50% 100%, rgba(109,90,230,.08), transparent 55%),
    var(--bg);
}
.article-extras-inner{max-width:920px;margin-left:auto;margin-right:auto}
.article-tag-card{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  background:var(--surface);
  border:1px solid rgba(255,255,255,.08);
  border-radius:18px;
  padding:16px 20px;
  margin-bottom:20px;
}
.tag-card-title{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--amber-light);
  font-size:14px;
  font-weight:700;
  margin-right:6px;
  white-space:nowrap;
}
.tag-chip{
  display:inline-flex;
  align-items:center;
  padding:5px 12px;
  border-radius:var(--radius-round);
  background:rgba(109,90,230,.16);
  border:1px solid rgba(109,90,230,.28);
  color:var(--text);
  font-size:13px;
  transition:background .2s ease,color .2s ease;
}
.tag-chip:hover{background:rgba(109,90,230,.3);color:#fff}
.article-actions-row{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:12px;
  margin-top:22px;
}
@media(max-width:560px){
  .article-actions-row .btn{width:100%}
}

/* 相关推荐 */
.related-section{padding:56px 0 20px}
.section-heading{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:32px;
}
.section-heading h2{
  margin:0;
  color:var(--white);
  font-size:clamp(26px,4vw,38px);
  font-weight:800;
  letter-spacing:.5px;
}
.section-heading .heading-sub{
  color:var(--muted);
  font-size:14px;
  max-width:360px;
  text-align:right;
}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.related-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:20px;
  overflow:hidden;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.related-card:hover{
  transform:translateY(-5px);
  border-color:rgba(245,184,74,.35);
  box-shadow:0 18px 38px rgba(0,0,0,.3);
}
.related-thumb{
  height:168px;
  overflow:hidden;
  background:var(--surface2);
  position:relative;
}
.related-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .45s ease;
}
.related-card:hover .related-thumb img{transform:scale(1.05)}
.related-body{
  padding:22px 22px 24px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.related-body h3{
  color:var(--white);
  font-size:20px;
  font-weight:700;
  margin:0 0 8px;
}
.related-body p{
  flex:1;
  color:var(--muted);
  font-size:14px;
  line-height:1.8;
  margin:0 0 18px;
}
.related-go{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--amber);
  font-size:14px;
  font-weight:600;
}
.related-go svg{transition:transform .2s ease}
.related-card:hover .related-go svg{transform:translateX(4px)}
@media(max-width:991px){
  .related-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
  .related-grid{grid-template-columns:1fr}
  .section-heading{flex-direction:column;align-items:flex-start;gap:8px}
  .section-heading .heading-sub{text-align:left}
}

/* CTA区 */
.cta-band{padding:64px 0 88px}
.cta-box{
  position:relative;
  overflow:hidden;
  text-align:center;
  padding:64px 28px 52px;
  border-radius:32px;
  background:
    radial-gradient(circle at 90% 10%, rgba(245,184,74,.18), transparent 30%),
    radial-gradient(circle at 10% 100%, rgba(109,90,230,.32), transparent 42%),
    linear-gradient(135deg,#1b1440,#3d2d8f 70%,#5b4ed1);
  border:1px solid rgba(255,255,255,.1);
  box-shadow:0 24px 60px rgba(0,0,0,.35);
}
.cta-box::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    radial-gradient(1.5px 1.5px at 12% 20%, rgba(255,255,255,.6), transparent),
    radial-gradient(1px 1px at 72% 14%, rgba(255,255,255,.45), transparent),
    radial-gradient(1.5px 1.5px at 30% 80%, rgba(255,255,255,.3), transparent),
    radial-gradient(1px 1px at 86% 72%, rgba(255,255,255,.34), transparent);
  pointer-events:none;
}
.cta-box .inner{position:relative;z-index:2}
.cta-box h2{
  color:#fff;
  font-size:clamp(26px,4vw,40px);
  font-weight:800;
  margin:0 0 14px;
}
.cta-box p{
  color:rgba(244,246,253,.84);
  font-size:15px;
  max-width:620px;
  margin:0 auto 30px;
}
.cta-actions{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:14px;
}
.cta-actions .btn-primary{
  background:#fff;
  color:#24165a;
  box-shadow:0 14px 34px rgba(0,0,0,.2);
}
.cta-actions .btn-primary:hover{box-shadow:0 18px 44px rgba(0,0,0,.26)}
.cta-actions .btn-secondary{
  border-color:rgba(255,255,255,.45);
  color:#fff;
}
.cta-actions .btn-secondary:hover{border-color:#fff;color:#fff}
@media(max-width:560px){
  .cta-actions .btn{width:100%}
}

/* 页脚 */
.footer{
  background:#05070e;
  border-top:1px solid rgba(255,255,255,.05);
}
.footer-info-line{
  background:#04060b;
  border-bottom:1px solid rgba(255,255,255,.04);
  padding:14px 0;
  font-size:13px;
  color:var(--muted);
}
.footer-info-line .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:6px 14px;
}
.f-info{display:inline-flex;align-items:center;gap:8px}
.f-info .sep{color:var(--amber)}
.footer-main{padding:52px 0 22px}
.footer-grid{
  display:grid;
  grid-template-columns:1.35fr 1fr;
  gap:48px;
}
.footer-logo{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:18px;
}
.logo-mark-sm{
  width:38px;
  height:38px;
  display:grid;
  place-items:center;
  border-radius:12px;
  background:linear-gradient(135deg,var(--purple),var(--purple-deep));
  color:var(--amber-light);
  box-shadow:0 6px 18px rgba(109,90,230,.3);
}
.logo-text{display:flex;flex-direction:column;gap:3px;line-height:1.1}
.logo-cn{
  color:var(--white);font-size:17px;font-weight:700;letter-spacing:1px;
}
.logo-sub{
  color:var(--muted);font-size:9px;letter-spacing:2px;text-transform:uppercase;
}
.footer-brand-text{
  color:var(--muted);
  font-size:14px;
  line-height:1.9;
  max-width:440px;
  margin:0 0 10px;
}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:28px;
}
.footer-col h4{
  color:var(--white);
  font-size:15px;
  font-weight:700;
  margin:0 0 16px;
  letter-spacing:.4px;
}
.footer-col ul{
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-col a{
  color:var(--muted);
  font-size:14px;
  transition:color .2s ease,padding-left .2s ease;
}
.footer-col a:hover{color:var(--amber);padding-left:5px}
.footer-copy{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:6px 20px;
  border-top:1px solid rgba(255,255,255,.05);
  margin-top:44px;
  padding:20px 0 24px;
  color:var(--muted);
  font-size:13px;
}
.footer-copy a:hover{color:var(--amber)}
@media(max-width:900px){
  .footer-grid{grid-template-columns:1fr;gap:36px}
}
@media(max-width:600px){
  .footer-cols{grid-template-columns:1fr 1fr;gap:20px}
  .footer-info-line .container{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root {
  --bg-deep: #080A12;
  --surface: #10162B;
  --surface-strong: #151D35;
  --surface-soft: #0C101F;
  --line: rgba(255,255,255,0.08);
  --line-strong: rgba(255,255,255,0.14);
  --primary: #6D5AE6;
  --primary-end: #3D2D8F;
  --amber: #F5B84A;
  --amber-light: #FFC96B;
  --mint: #70C7C2;
  --text-head: #F4F6FD;
  --text-body: #C7CCDC;
  --text-muted: #8C93AC;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-card: 0 18px 44px rgba(0,0,0,0.28), 0 0 0 1px rgba(94,84,200,0.04);
  --shadow-amber: 0 14px 36px rgba(245,184,74,0.20);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-deep);
  color: var(--text-body);
  font-family: var(--font-cn);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body.nav-open { overflow: hidden; }
main { display: block; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; border: none; background: none; cursor: pointer; }
ul { list-style: none; }
svg { display: inline-block; vertical-align: middle; }
:focus-visible {
  outline: 3px solid rgba(245,184,74,0.75);
  outline-offset: 3px;
  border-radius: 8px;
}
.l-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: clamp(70px, 8vw, 120px) 0; }
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--mint);
  text-transform: uppercase;
}
.section-label::before {
  content: "";
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--amber), transparent);
}
.section-title {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.25;
  color: var(--text-head);
  margin-top: 10px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.section-desc {
  margin-top: 14px;
  max-width: 620px;
  font-size: 16px;
  color: var(--text-muted);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: clamp(34px, 5vw, 58px);
}
.section-head .muted-link {
  font-size: 15px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  padding: 12px 0;
  transition: color 0.2s ease;
}
.section-head .muted-link:hover { color: var(--amber-light); }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  background: rgba(8,10,18,0.96);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.25s ease;
}
.site-header.scrolled { box-shadow: 0 12px 30px rgba(0,0,0,0.26); }
.top-info {
  background: #06070E;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.top-info-inner {
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  font-size: 13px;
  color: var(--text-muted);
}
.top-website { font-weight: 500; color: #AEB4CC; letter-spacing: 0.02em; }
.top-notice { color: #7D859F; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.top-live {
  color: #AEB4CC;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  padding: 6px 0;
  transition: color 0.2s ease;
}
.top-live::before {
  content: "✦";
  color: var(--amber);
  font-size: 12px;
  line-height: 1;
}
.top-live:hover { color: #fff; }
.nav-main {
  border-bottom: 1px solid rgba(255,255,255,0.02);
}
.nav-main-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 18px;
  position: relative;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  padding: 8px 0;
}
.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--amber);
  background: linear-gradient(140deg, rgba(109,90,230,0.92), rgba(61,45,143,0.35));
  border: 1px solid rgba(245,184,74,0.25);
  box-shadow: 0 0 22px rgba(109,90,230,0.28);
}
.brand-name {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.logo-cn {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-head);
  letter-spacing: 0;
}
.logo-sub {
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  margin-top: 3px;
  font-weight: 500;
}
.nav-collapse {
  flex: 1;
  display: flex;
  justify-content: center;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-link {
  position: relative;
  display: block;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 500;
  color: #A9AFC6;
  border-radius: 10px;
  transition: color 0.2s ease, background 0.2s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: linear-gradient(90deg, var(--amber), var(--primary));
  border-radius: 999px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.22s ease;
}
.nav-link:hover { color: #fff; background: rgba(255,255,255,0.03); }
.nav-link.active { color: #fff; }
.nav-link.active::after { transform: scaleX(1); }
.nav-link.active:hover { background: transparent; }
.nav-cta {
  flex-shrink: 0;
  margin-left: auto;
}
.nav-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  color: #fff;
  border: 1px solid var(--line);
  flex-shrink: 0;
}
.nav-toggle svg { width: 22px; height: 22px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  transition: transform 0.18s ease, box-shadow 0.22s ease, background 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.btn-sm { min-height: 42px; padding: 0 19px; font-size: 14px; }
.btn-primary {
  background: linear-gradient(135deg, #F5B84A, #FFC96B);
  color: #13162A;
  box-shadow: 0 12px 32px rgba(245,184,74,0.20);
}
.btn-primary:hover { box-shadow: 0 16px 42px rgba(245,184,74,0.30); transform: translateY(-2px); }
.btn-primary:active { box-shadow: 0 4px 14px rgba(245,184,74,0.12); transform: translateY(0); }
.btn-secondary {
  background: rgba(255,255,255,0.04);
  color: #fff;
  border: 1px solid var(--line-strong);
  box-shadow: 0 8px 24px rgba(0,0,0,0.16);
}
.btn-secondary:hover { border-color: rgba(255,201,107,0.5); color: var(--amber-light); transform: translateY(-2px); }
.btn-secondary:active { transform: translateY(0); }
.btn-lg { min-height: 54px; padding: 0 30px; font-size: 16px; }

/* Hero */
.hero {
  position: relative;
  min-height: 0;
  overflow: hidden;
  background:
    linear-gradient(110deg, rgba(6,7,16,0.92) 0%, rgba(23,17,51,0.78) 45%, rgba(30,18,60,0.30) 72%, rgba(8,10,18,0.30) 100%),
    url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  border-bottom: 1px solid var(--line);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 18px 30px, rgba(255,255,255,0.42), transparent),
    radial-gradient(1px 1px at 90px 70px, rgba(246,197,115,0.36), transparent),
    radial-gradient(1px 1px at 150px 18px, rgba(255,255,255,0.25), transparent),
    radial-gradient(1px 1px at 240px 80px, rgba(158,145,255,0.42), transparent),
    radial-gradient(1px 1px at 310px 35px, rgba(255,255,255,0.26), transparent),
    radial-gradient(1px 1px at 420px 55px, rgba(255,201,107,0.3), transparent);
  opacity: 0.7;
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -1px -10%;
  height: 280px;
  background: radial-gradient(ellipse at center bottom, rgba(61,45,143,0.38), transparent 70%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: clamp(34px, 5vw, 68px);
  padding: clamp(64px, 8vw, 116px) 0;
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  font-weight: 600;
  color: #D8D2FF;
  background: rgba(109,90,230,0.16);
  border: 1px solid rgba(148,132,255,0.28);
  padding: 7px 15px;
  border-radius: 999px;
  letter-spacing: 0.02em;
}
.hero-kicker::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 12px rgba(245,184,74,0.8);
}
.hero-title {
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.18;
  font-weight: 800;
  color: var(--text-head);
  margin: 22px 0 18px;
  letter-spacing: -0.02em;
}
.hero-title .hl {
  background: linear-gradient(120deg, #FFD98A, #E9C67C);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead {
  font-size: 17px;
  max-width: 600px;
  color: #C2C7D9;
  margin-bottom: 28px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 22px;
  align-items: center;
  color: var(--text-muted);
  font-size: 13px;
}
.hero-trust span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.hero-trust span::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
}
.hero-visual { position: relative; }
.hero-shot {
  background: rgba(10,14,27,0.82);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 26px;
  padding: 12px;
  box-shadow: 0 24px 70px rgba(0,0,0,0.36), 0 0 0 1px rgba(109,90,230,0.10);
  transform: rotate(1.2deg);
}
.hero-shot img {
  width: 100%;
  border-radius: 18px;
  object-fit: cover;
}
.visual-chip {
  position: absolute;
  background: rgba(13,18,34,0.92);
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 14px;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  color: #E8E6FA;
  box-shadow: 0 14px 34px rgba(0,0,0,0.32);
  backdrop-filter: blur(6px);
}
.visual-chip svg { width: 17px; height: 17px; color: var(--amber); }
.chip-top { top: -22px; right: 0; animation: float 4.6s ease-in-out infinite; }
.chip-bottom { bottom: 28px; left: -8px; animation: float 5.8s ease-in-out infinite; }
.visual-note {
  margin-top: 18px;
  text-align: right;
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Stats */
.stats-band {
  position: relative;
  z-index: 20;
  margin-top: -70px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: clamp(22px, 3vw, 38px);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: 12px 14px;
  border-left: 1px solid rgba(255,255,255,0.06);
}
.stat-item:first-child { border-left: none; }
.stat-num {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.1;
  font-weight: 800;
  color: var(--amber);
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
}
.stat-unit { font-size: 15px; color: var(--text-muted); font-weight: 500; }
.stat-label { color: #9AA2BB; font-size: 14px; margin-top: 7px; }
.stat-star {
  color: var(--primary);
  font-size: 16px;
  margin-top: 4px;
  line-height: 1;
}

/* Value areas */
.value-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.value-card {
  background: linear-gradient(160deg, rgba(19,26,48,0.9), rgba(11,15,30,0.9));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 3vw, 34px);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.25s ease;
}
.value-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,201,107,0.22);
  box-shadow: 0 24px 44px rgba(0,0,0,0.22), 0 0 0 1px rgba(109,90,230,0.06);
}
.value-feature {
  grid-row: span 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  position: relative;
  min-height: 340px;
  overflow: hidden;
}
.value-feature::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(109,90,230,0.26), rgba(8,10,18,0.2) 45%, transparent);
  border-radius: var(--radius-lg);
}
.value-feature::after {
  content: "✦";
  position: absolute;
  right: 22px;
  top: 12px;
  font-size: 66px;
  color: rgba(255,201,107,0.48);
  transform: rotate(12deg);
}
.value-icon {
  width: 46px;
  height: 46px;
  border-radius: 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: linear-gradient(140deg, rgba(109,90,230,0.4), rgba(61,45,143,0.25));
  border: 1px solid rgba(148,132,255,0.3);
  margin-bottom: 16px;
}
.value-icon svg { width: 21px; height: 21px; color: var(--amber-light); }
.value-feature .value-icon { margin-top: auto; }
.value-title {
  color: var(--text-head);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}
.value-feature .value-title { font-size: 24px; }
.value-text { color: var(--text-muted); font-size: 15px; line-height: 1.8; }
.value-card p + p { margin-top: 10px; }
.value-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--amber-light);
  font-size: 14px;
  font-weight: 600;
  margin-top: 13px;
}
.value-link svg { width: 15px; height: 15px; transition: transform 0.2s ease; }
.value-link:hover svg { transform: translateX(5px); }

/* Scenes */
.scenes-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}
.scene-card {
  position: relative;
  min-height: 290px;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: #0F172B;
  border: 1px solid var(--line);
  box-shadow: 0 12px 30px rgba(0,0,0,0.18);
  transition: transform 0.24s ease, box-shadow 0.28s ease, border-color 0.24s ease;
}
.scene-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 26px 48px rgba(0,0,0,0.28), 0 0 0 1px rgba(109,90,230,0.08);
}
.scene-card.img-span-7 { grid-column: span 7; }
.scene-card.img-span-5 { grid-column: span 5; }
.scene-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
  transition: opacity 0.35s ease, transform 0.45s ease;
}
.scene-card:hover .scene-bg { opacity: 0.42; transform: scale(1.03); }
.scene-body {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(20px, 3vw, 30px);
  background: linear-gradient(180deg, rgba(8,10,18,0.2), rgba(8,10,18,0.9) 70%);
  z-index: 2;
}
.scene-tag {
  position: absolute;
  top: 18px;
  left: 18px;
  z-index: 3;
  font-size: 12px;
  color: #F4F6FD;
  background: rgba(8,10,18,0.44);
  border: 1px solid rgba(255,255,255,0.14);
  padding: 5px 11px;
  border-radius: 999px;
}
.scene-title { color: #fff; font-size: 21px; font-weight: 700; margin-bottom: 6px; line-height: 1.4; }
.scene-copy { color: #C5C9DC; font-size: 14px; max-width: 480px; }

/* Guide */
.guide-area { background: linear-gradient(180deg, #080A12 0%, #100F22 50%, #080A12 100%); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  padding-top: 24px;
}
.guide-card {
  background: #11172B;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 26px;
  position: relative;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.guide-card:hover { transform: translateY(-5px) !important; }
.guide-card:nth-child(2) { transform: translateY(36px); }
.guide-card:nth-child(3) { transform: translateY(12px); }
.guide-card:nth-child(4) { transform: translateY(46px); }
.guide-card:nth-child(5) { transform: translateY(8px); }
.guide-card:nth-child(6) { transform: translateY(32px); }
.guide-card:hover { border-color: rgba(245,184,74,0.25); box-shadow: 0 22px 42px rgba(0,0,0,0.22); }
.guide-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(245,184,74,0.2), rgba(109,90,230,0.16));
  border: 1px solid rgba(245,184,74,0.2);
  font-weight: 800;
  color: var(--amber);
  font-size: 15px;
  margin-bottom: 20px;
}
.guide-line {
  position: absolute;
  top: 34px;
  left: 57px;
  width: 22px;
  height: 2px;
  background: linear-gradient(90deg, rgba(245,184,74,0.65), transparent);
}
.guide-title { color: var(--text-head); font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.guide-text { color: var(--text-muted); font-size: 14px; line-height: 1.8; }
.guide-more { display: inline-block; margin-top: 12px; color: var(--amber-light); font-size: 13px; font-weight: 500; }

/* Tool / download area */
.tool-panel {
  background: linear-gradient(140deg, #12172E, #17122D);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  box-shadow: var(--shadow-card);
}
.tool-visual {
  min-height: 320px;
  position: relative;
  border-right: 1px solid var(--line);
}
.tool-visual img { width: 100%; height: 100%; object-fit: cover; min-height: 320px; }
.tool-overlay {
  position: absolute;
  left: 18px;
  bottom: 18px;
  background: rgba(8,10,18,0.82);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  padding: 8px 12px;
  font-size: 13px;
  color: #F4F6FD;
}
.tool-list { padding: clamp(24px, 4vw, 42px); display: flex; flex-direction: column; justify-content: center; }
.tool-list-title { color: var(--text-head); font-weight: 800; font-size: clamp(24px, 3vw, 34px); line-height: 1.3; }
.tool-list-desc { margin-top: 12px; font-size: 15px; color: var(--text-muted); }
.platform-list { margin-top: 22px; display: grid; gap: 12px; }
.platform-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255,255,255,0.035);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 11px 14px;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.platform-row:hover { background: rgba(255,255,255,0.05); border-color: rgba(255,255,255,0.18); }
.platform-plane { flex-shrink: 0; width: 34px; height: 34px; border-radius: 10px; display: flex; align-items: center; justify-content: center; background: rgba(109,90,230,0.2); color: var(--amber); }
.platform-plane svg { width: 17px; height: 17px; }
.platform-meta { flex: 1; }
.platform-meta strong { display: block; color: #E7E9F6; font-weight: 600; font-size: 14px; line-height: 1.5; }
.platform-meta span { font-size: 12px; color: var(--text-muted); }
.platform-badge {
  background: rgba(245,184,74,0.10);
  border: 1px solid rgba(245,184,74,0.20);
  color: var(--amber-light);
  font-size: 12px;
  border-radius: 999px;
  padding: 6px 10px;
  white-space: nowrap;
}

/* FAQ */
.faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 40px;
}
.faq-list { display: grid; gap: 12px; }
.faq-item {
  background: #11172B;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color 0.22s ease;
}
.faq-item.is-open { border-color: rgba(245,184,74,0.18); }
.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  text-align: left;
  padding: 18px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-head);
  line-height: 1.6;
  transition: background 0.2s ease;
}
.faq-q:hover { background: rgba(255,255,255,0.025); }
.faq-q .plus {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber);
  background: rgba(255,255,255,0.035);
  border: 1px solid var(--line);
  font-size: 19px;
  font-weight: 400;
  transform: rotate(0deg);
  transition: transform 0.28s ease, border-color 0.2s ease;
}
.faq-item.is-open .plus { transform: rotate(135deg); border-color: rgba(245,184,74,0.40); }
.faq-a {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, opacity 0.3s ease, padding 0.3s ease;
}
.faq-item.is-open .faq-a {
  max-height: 500px;
  opacity: 1;
  padding: 0 20px 20px;
}
.faq-a p { font-size: 14px; line-height: 1.85; color: var(--text-muted); border-left: 2px solid var(--primary); padding-left: 15px; }
.faq-side {
  background: radial-gradient(120% 120% at top right, rgba(109,90,230,0.22), transparent 55%), #11172B;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  min-height: 260px;
}
.faq-side .section-label { margin-bottom: 7px; }
.faq-side-title { font-size: 24px; line-height: 1.45; font-weight: 800; color: var(--text-head); }
.faq-side-desc { color: var(--text-muted); font-size: 14px; margin-top: 12px; }
.faq-side .btn { margin-top: auto; }
.star-sky {
  margin-top: 18px;
  font-size: 18px;
  letter-spacing: 8px;
  color: rgba(245,184,74,0.4);
}

/* CTA */
.final-cta {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(120deg, rgba(18,12,48,0.84), rgba(74,32,96,0.62) 50%, rgba(8,10,18,0.94)),
    url('/assets/images/backpic/back-2.png') center right / cover no-repeat;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: clamp(60px, 8vw, 110px) 0;
}
.final-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(1px 1px at 80px 50px, rgba(255,255,255,0.45), transparent), radial-gradient(1px 1px at 120px 120px, rgba(245,184,74,0.35), transparent), radial-gradient(1px 1px at 220px 60px, rgba(158,145,255,0.42), transparent), radial-gradient(1px 1px at 340px 90px, rgba(255,255,255,0.34), transparent);
  opacity: 0.8;
  pointer-events: none;
}
.cta-inner { position: relative; z-index: 2; text-align: center; max-width: 720px; margin: 0 auto; }
.cta-title { font-size: clamp(28px, 5vw, 48px); line-height: 1.25; color: var(--text-head); font-weight: 800; }
.cta-desc { margin-top: 16px; color: #C3C7DB; font-size: 16px; }
.cta-buttons {
  margin-top: 32px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}
.dl-button {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.30);
  border-radius: 18px;
  padding: 12px 20px;
  min-width: 180px;
  transition: background 0.25s ease, transform 0.2s ease, border-color 0.2s ease;
}
.dl-button:hover { background: rgba(255,255,255,0.18); transform: translateY(-3px); border-color: rgba(245,184,74,0.45); }
.dl-button small { font-size: 12px; color: var(--amber-light); letter-spacing: 0.04em; }
.dl-button strong { color: #fff; font-size: 16px; font-weight: 700; }
.cta-trust {
  margin-top: 26px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: #AAB0C9;
}
.cta-trust span { display: inline-flex; align-items: center; gap: 6px; }
.cta-trust span::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--mint); }

/* Footer */
.footer {
  background: #06070E;
  border-top: 1px solid var(--line);
}
.footer-info-line {
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}
.footer-info-line .l-container { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.f-info {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-muted);
}
.f-info .sep { color: rgba(245,184,74,0.4); }
.footer-main { padding-top: 52px; }
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: clamp(30px, 5vw, 70px);
}
.footer-brand p { margin-top: 16px; font-size: 14px; color: var(--text-muted); max-width: 460px; line-height: 1.9; }
.footer-logo { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, rgba(109,90,230,0.5), rgba(61,45,143,0.2));
  color: var(--amber);
  border: 1px solid rgba(245,184,74,0.22);
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-cn { font-weight: 800; color: var(--text-head); font-size: 18px; }
.logo-sub { font-size: 10px; color: var(--text-muted); letter-spacing: 0.18em; }
.footer-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
}
.footer-col h4 { font-size: 15px; color: var(--text-head); font-weight: 700; margin-bottom: 14px; }
.footer-col li + li { margin-top: 9px; }
.footer-col a { font-size: 14px; color: var(--text-muted); transition: color 0.2s ease, padding-left 0.2s ease; }
.footer-col a:hover { color: var(--amber-light); padding-left: 5px; }
.footer-copy {
  margin-top: 50px;
  border-top: 1px solid var(--line);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 13px;
  color: #737B97;
}

/* Responsive */
@media (max-width: 1100px) {
  .l-container { padding: 0 22px; }
  .guide-grid { grid-template-columns: repeat(3, 1fr); gap: 18px; }
  .guide-card { padding: 20px; }
  .footer-grid { gap: 30px; }
}
@media (max-width: 920px) {
  .top-info-inner { gap: 12px; }
  .nav-collapse {
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    display: none;
    background: #0A0D19;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 14px 40px rgba(0,0,0,0.32);
    padding: 12px;
  }
  .site-header.nav-open .nav-collapse {
    display: block;
    max-height: calc(100vh - 60px);
    overflow: auto;
  }
  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }
  .nav-link {
    padding: 14px 16px;
    font-size: 16px;
    border-radius: 12px;
  }
  .nav-link::after { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: inline-flex; }
  .hero-inner { grid-template-columns: 1fr; gap: 44px; padding-top: 72px; padding-bottom: 104px; }
  .hero-visual { max-width: 580px; margin: 0 auto; }
  .stats-band { margin-top: -44px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 22px; }
  .stat-item { border-left: none; }
  .scenes-grid { display: flex; flex-wrap: wrap; }
  .scene-card { width: calc(50% - 12px); }
  .scene-card.img-span-7, .scene-card.img-span-5 { width: calc(50% - 12px); }
  .tool-panel { grid-template-columns: 1fr; }
  .tool-visual { border-right: none; border-bottom: 1px solid var(--line); }
  .faq-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .l-container { padding: 0 16px; }
  .top-notice { display: none; }
  .hero-title { font-size: 31px; }
  .hero-trust { flex-direction: column; align-items: flex-start; gap: 8px; }
  .visual-chip { display: none; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .stats-band { padding: 20px; }
  .stat-num { font-size: 30px; }
  .value-grid { display: flex; flex-direction: column; }
  .value-card,
  .value-feature { width: 100%; flex: none; min-height: 0; }
  .value-feature { min-height: 300px; }
  .scene-card { width: 100%; min-height: 250px; }
  .guide-grid { grid-template-columns: 1fr; padding-top: 0; }
  .guide-card { transform: none !important; width: 100%; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 8px; }
  .tool-list { padding: 24px 18px; }
  .platform-row { flex-wrap: wrap; }
  .dl-button { width: 100%; }
  .footer-info-line .l-container { flex-direction: column; gap: 6px; }
  .footer-cols { grid-template-columns: 1fr; gap: 22px; }
  .footer-copy { flex-direction: column; gap: 6px; }
}

/* roulang page: category2 */
:root {
            --primary: #6D5AE6;
            --primary-deep: #332C6B;
            --amber: #F5B84A;
            --amber-light: #FFC96B;
            --accent: #70C7C2;
            --bg: #080A12;
            --surface: #11172B;
            --surface-2: #171F37;
            --line: rgba(255, 255, 255, 0.08);
            --text: #C7CCDC;
            --heading: #F4F6FD;
            --muted: #8C93AC;
            --paper: #F7F3EA;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.24);
            --shadow-amber: 0 12px 32px rgba(245, 184, 74, 0.2);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg);
            color: var(--text);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        h1,
        h2,
        h3,
        h4,
        p,
        ul,
        figure {
            margin: 0;
            padding: 0;
        }

        ul {
            list-style: none;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease, background-color .25s ease, border-color .25s ease, transform .25s ease, box-shadow .25s ease;
        }

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

        button {
            font-family: inherit;
            border: 0;
            cursor: pointer;
            color: inherit;
            background: transparent;
        }

        :focus-visible {
            outline: 2px solid var(--amber);
            outline-offset: 3px;
            border-radius: 6px;
        }

        section[id] {
            scroll-margin-top: 100px;
        }

        .container {
            width: min(1240px, 92%);
            margin-inline: auto;
        }

        /* ===== Topbar ===== */
        .topbar {
            background: #05070D;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: var(--muted);
        }

        .topbar-flex {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            min-height: 40px;
            flex-wrap: wrap;
            padding-block: 6px;
        }

        .topbar-brand {
            font-weight: 600;
            color: rgba(255, 255, 255, 0.82);
            letter-spacing: 0.02em;
        }

        .topbar-message {
            color: rgba(255, 255, 255, 0.56);
        }

        .topbar-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: var(--amber-light);
        }

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

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(8, 10, 18, 0.94);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: box-shadow .3s ease, border-color .3s ease;
        }

        .site-header.scrolled {
            border-bottom-color: rgba(255, 255, 255, 0.12);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.34);
        }

        .header-flex {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            min-height: 76px;
            position: relative;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-mark {
            width: 38px;
            height: 38px;
            flex-basis: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #332C6B, #6D5AE6);
            border-radius: 14px;
            color: var(--amber-light);
            box-shadow: 0 0 22px rgba(109, 90, 230, 0.3);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.15;
        }

        .logo-cn {
            font-size: 17px;
            font-weight: 800;
            color: var(--heading);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo-sub {
            font-size: 10px;
            letter-spacing: 0.18em;
            color: var(--muted);
            font-weight: 600;
            margin-top: 3px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .nav-link {
            display: inline-block;
            position: relative;
            padding: 9px 14px;
            border-radius: 12px;
            font-size: 15px;
            color: var(--muted);
            font-weight: 500;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-link.active {
            color: var(--heading);
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 4px;
            height: 2px;
            border-radius: 99px;
            background: linear-gradient(90deg, var(--primary), var(--amber));
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 42px;
            padding: 0 20px;
            border-radius: 999px;
            background: linear-gradient(135deg, #F5B84A, #FFC96B);
            color: #191410;
            font-size: 14px;
            font-weight: 700;
            box-shadow: 0 8px 24px rgba(245, 184, 74, 0.18);
            white-space: nowrap;
        }

        .header-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 12px 30px rgba(245, 184, 74, 0.28);
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.02);
            flex-shrink: 0;
        }

        .menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            border-radius: 4px;
            background: var(--heading);
            transition: transform .3s ease, opacity .3s ease;
        }

        .menu-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .menu-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }

        .menu-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            overflow: hidden;
            padding: clamp(72px, 9vw, 130px) 0 90px;
            background:
                linear-gradient(90deg, rgba(5, 7, 14, 0.96) 0%, rgba(9, 11, 23, 0.85) 44%, rgba(11, 16, 30, 0.66) 100%),
                url('/assets/images/backpic/back-2.png') center 20% / cover no-repeat;
        }

        .hero::after {
            content: "";
            position: absolute;
            inset: 0;
            pointer-events: none;
            background-image:
                radial-gradient(rgba(255, 255, 255, 0.14) 1px, transparent 1.4px),
                radial-gradient(rgba(245, 184, 74, 0.16) 1px, transparent 1.6px);
            background-size: 120px 120px, 77px 77px;
            background-position: 0 0, 19px 37px;
            opacity: 0.35;
            mix-blend-mode: screen;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
            gap: clamp(30px, 6vw, 64px);
            align-items: center;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.16em;
            color: var(--amber-light);
            text-transform: uppercase;
        }

        .eyebrow::before {
            content: "";
            width: 24px;
            height: 1px;
            background: linear-gradient(90deg, var(--amber), transparent);
        }

        .hero-title {
            font-size: clamp(36px, 5vw, 58px);
            line-height: 1.15;
            color: var(--heading);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin: 18px 0 0;
        }

        .hero-title span {
            display: block;
            font-size: clamp(22px, 2.8vw, 34px);
            font-weight: 700;
            background: linear-gradient(90deg, #D8D5FF, #8F7EFF, #FFC96B);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-top: 8px;
            letter-spacing: 0.02em;
        }

        .hero-desc {
            margin: 22px 0 32px;
            font-size: 17px;
            line-height: 1.9;
            color: var(--text);
            max-width: 600px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 50px;
            padding: 0 26px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 700;
            gap: 9px;
        }

        .btn-amber {
            background: linear-gradient(135deg, #F5B84A, #FFC96B);
            color: #191410;
            box-shadow: var(--shadow-amber);
        }

        .btn-amber:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 38px rgba(245, 184, 74, 0.32);
        }

        .btn-ghost {
            border: 1px solid rgba(255, 255, 255, 0.22);
            background: rgba(255, 255, 255, 0.04);
            color: var(--heading);
        }

        .btn-ghost:hover {
            border-color: rgba(255, 255, 255, 0.7);
            background: rgba(255, 255, 255, 0.1);
        }

        .official-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 26px;
            padding: 8px 14px;
            border: 1px solid rgba(245, 184, 74, 0.35);
            background: rgba(245, 184, 74, 0.08);
            border-radius: 999px;
            color: var(--amber-light);
            font-size: 12px;
            letter-spacing: 0.04em;
        }

        .official-badge i {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--amber);
            box-shadow: 0 0 0 4px rgba(245, 184, 74, 0.15);
        }

        .hero-media {
            position: relative;
        }

        .hero-screen {
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 28px;
            padding: 12px;
            background: rgba(255, 255, 255, 0.05);
            box-shadow: 0 30px 70px rgba(0, 0, 0, 0.45), inset 0 0 0 1px rgba(255, 255, 255, 0.04);
            transform: rotate(0.8deg);
        }

        .hero-screen img {
            width: 100%;
            border-radius: 20px;
            aspect-ratio: 4 / 3;
            object-fit: cover;
        }

        .hero-float-card {
            position: absolute;
            right: -16px;
            bottom: -20px;
            background: #11172B;
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 14px 18px;
            border-radius: 18px;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.42);
        }

        .hero-float-card .float-num {
            font-size: 22px;
            font-weight: 800;
            color: var(--amber);
            line-height: 1.2;
        }

        .hero-float-card .float-label {
            font-size: 12px;
            color: var(--muted);
        }

        /* ===== Stats ===== */
        .stats-section {
            position: relative;
            z-index: 5;
            margin-top: -40px;
            padding-bottom: 20px;
        }

        .stats-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 26px;
            overflow: hidden;
            box-shadow: 0 22px 50px rgba(0, 0, 0, 0.3);
        }

        .stat-card {
            background: #11172B;
            padding: 26px 24px;
        }

        .stat-card + .stat-card {
            border-left: 0;
        }

        .stat-num {
            display: block;
            font-size: 34px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--amber);
            letter-spacing: -0.02em;
        }

        .stat-label {
            display: block;
            font-size: 13px;
            color: var(--muted);
            margin-top: 7px;
        }

        /* ===== Section ===== */
        .section {
            padding: clamp(72px, 8vw, 120px) 0;
        }

        .section-panel {
            margin-top: 48px;
        }

        .section-head {
            max-width: 720px;
        }

        .section-title {
            font-size: clamp(28px, 3.6vw, 42px);
            line-height: 1.2;
            font-weight: 800;
            color: var(--heading);
            letter-spacing: -0.02em;
            margin-top: 10px;
        }

        .section-desc {
            margin-top: 18px;
            font-size: 16px;
            color: var(--muted);
            line-height: 1.9;
        }

        /* ===== Value cards ===== */
        .value-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            grid-auto-rows: auto;
            gap: 24px;
            margin-top: 48px;
        }

        .value-card-large {
            grid-column: span 7;
            padding: clamp(28px, 4vw, 44px);
            border-radius: 30px;
            border: 1px solid rgba(255, 255, 255, 0.09);
            background:
                radial-gradient(circle at 85% 15%, rgba(109, 90, 230, 0.25), transparent 40%),
                #11172B;
            min-height: 320px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .value-card-small {
            grid-column: span 5;
            border-radius: 24px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 28px;
            background: #11172B;
        }

        .value-icon {
            width: 46px;
            height: 46px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(109, 90, 230, 0.32), rgba(245, 184, 74, 0.18));
            color: var(--amber-light);
            margin-bottom: 20px;
        }

        .value-card-large h3 {
            font-size: 26px;
            font-weight: 800;
            color: var(--heading);
            margin-top: 12px;
        }

        .value-card-small h3 {
            font-size: 20px;
            color: var(--heading);
            font-weight: 700;
            margin-top: 10px;
        }

        .value-card-large p,
        .value-card-small p {
            color: var(--text);
            line-height: 1.8;
            margin-top: 10px;
        }

        .value-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 18px;
            color: var(--amber-light);
            font-weight: 600;
            font-size: 14px;
        }

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

        /* ===== Features ===== */
        .features-list {
            margin-top: 24px;
        }

        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            align-items: center;
            gap: clamp(28px, 6vw, 72px);
            padding: 36px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
        }

        .feature-row:first-child {
            padding-top: 24px;
        }

        .feature-media {
            position: relative;
            border-radius: 28px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.12);
            background: #11172B;
            box-shadow: var(--shadow-card);
        }

        .feature-media img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            transition: transform .6s ease;
        }

        .feature-media:hover img {
            transform: scale(1.02);
        }

        .media-label {
            position: absolute;
            left: 16px;
            bottom: 16px;
            background: rgba(6, 8, 16, 0.78);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: #fff;
            padding: 7px 12px;
            font-size: 12px;
            border-radius: 999px;
            backdrop-filter: blur(6px);
            letter-spacing: 0.03em;
        }

        .feature-index {
            font-size: 13px;
            font-weight: 800;
            letter-spacing: 0.16em;
            color: var(--primary);
        }

        .feature-copy h3 {
            font-size: clamp(23px, 2.6vw, 34px);
            color: var(--heading);
            font-weight: 800;
            line-height: 1.25;
            margin: 14px 0 14px;
        }

        .feature-copy p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text);
        }

        .feature-list {
            margin-top: 18px;
            display: grid;
            gap: 8px;
        }

        .feature-list li {
            position: relative;
            padding-left: 24px;
            font-size: 15px;
            color: var(--text);
        }

        .feature-list li::before {
            content: "✦";
            position: absolute;
            left: 2px;
            top: 0;
            color: var(--amber);
            font-size: 13px;
        }

        .feature-row.reverse .feature-media {
            order: 2;
        }

        /* ===== Requirements ===== */
        .req-wrap {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 28px;
            margin-top: 48px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 40px;
        }

        .req-intro h3 {
            font-size: 24px;
            color: var(--heading);
            font-weight: 800;
            line-height: 1.3;
        }

        .req-intro p {
            margin: 14px 0 18px;
            line-height: 1.8;
            color: var(--muted);
        }

        .scene-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 13px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            background: rgba(255, 255, 255, 0.03);
            border-radius: 999px;
            color: var(--text);
            font-size: 13px;
        }

        .tag i {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--accent);
        }

        .spec-card {
            background: #11172B;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 28px;
            padding: 8px 26px;
            box-shadow: var(--shadow-card);
        }

        .spec-card-title {
            padding: 18px 0 8px;
            font-size: 15px;
            font-weight: 800;
            color: var(--heading);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .spec-item {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 15px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

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

        .spec-item span {
            flex: 0 0 92px;
            color: var(--muted);
            font-size: 14px;
        }

        .spec-item b {
            color: var(--heading);
            font-weight: 600;
            font-size: 14px;
        }

        /* ===== Reviews ===== */
        .reviews-grid {
            columns: 2;
            column-gap: 22px;
            margin-top: 48px;
        }

        .review-card {
            break-inside: avoid;
            margin-bottom: 22px;
            background: #11172B;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 24px;
            padding: 26px;
        }

        .review-card .review-stars {
            color: var(--amber);
            font-size: 13px;
            letter-spacing: 0.14em;
            margin-bottom: 12px;
        }

        .review-card p {
            color: #D6DAE8;
            line-height: 1.8;
            font-size: 15px;
        }

        .review-card .review-meta {
            margin-top: 16px;
            color: var(--muted);
            font-size: 13px;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 2.2fr;
            gap: 40px;
            margin-top: 48px;
        }

        .faq-guide h2 {
            font-size: 28px;
            color: var(--heading);
            font-weight: 800;
            line-height: 1.3;
        }

        .faq-guide p {
            margin-top: 14px;
            color: var(--muted);
            line-height: 1.8;
        }

        .faq-list {
            display: grid;
            gap: 14px;
        }

        .faq-item {
            background: #11172B;
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: 20px;
            overflow: hidden;
            transition: border-color .3s ease;
        }

        .faq-item[open] {
            border-color: rgba(109, 90, 230, 0.5);
        }

        .faq-summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--heading);
        }

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

        .faq-summary:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-icon {
            width: 30px;
            height: 30px;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(109, 90, 230, 0.14);
            color: #A99AFF;
            font-size: 20px;
            font-weight: 400;
            transition: transform .3s ease, background .3s ease, color .3s ease;
        }

        .faq-item[open] .faq-icon {
            transform: rotate(45deg);
            background: rgba(245, 184, 74, 0.16);
            color: var(--amber);
        }

        .faq-answer {
            padding: 0 26px 24px;
            color: var(--text);
            line-height: 1.85;
            font-size: 15px;
        }

        /* ===== CTA / Download ===== */
        .cta-band {
            background: linear-gradient(135deg, #171228, #120F24 50%, #080A12 100%);
            border: 1px solid rgba(109, 90, 230, 0.4);
            border-radius: 38px;
            padding: clamp(40px, 6vw, 80px) clamp(24px, 5vw, 72px);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-band::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                radial-gradient(circle at 18% 30%, rgba(245, 184, 74, 0.14), transparent 32%),
                radial-gradient(circle at 80% 20%, rgba(109, 90, 230, 0.28), transparent 40%);
            pointer-events: none;
        }

        .cta-band > * {
            position: relative;
        }

        .cta-title {
            font-size: clamp(28px, 4vw, 44px);
            font-weight: 800;
            color: var(--heading);
            line-height: 1.25;
        }

        .cta-desc {
            max-width: 640px;
            margin: 18px auto 0;
            color: var(--text);
            line-height: 1.8;
        }

        .download-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-top: 34px;
        }

        .download-btn {
            display: inline-flex;
            align-items: center;
            gap: 14px;
            min-width: 230px;
            padding: 15px 20px;
            background: #11172B;
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 20px;
            color: var(--heading);
            text-align: left;
            transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
        }

        .download-btn:hover {
            transform: translateY(-3px);
            border-color: rgba(245, 184, 74, 0.6);
            box-shadow: 0 14px 32px rgba(0, 0, 0, 0.35);
        }

        .dl-badge {
            width: 42px;
            height: 42px;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(109, 90, 230, 0.4), rgba(245, 184, 74, 0.2));
            color: var(--amber-light);
            font-weight: 800;
            font-size: 13px;
        }

        .download-btn strong {
            display: block;
            font-size: 16px;
            font-weight: 700;
        }

        .download-btn small {
            color: var(--muted);
            font-size: 12px;
            margin-top: 3px;
            display: block;
        }

        .download-trust {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 22px;
            margin-top: 26px;
            font-size: 12px;
            color: var(--muted);
        }

        .download-trust span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .download-trust i {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 0 3px rgba(112, 199, 194, 0.14);
        }

        /* ===== Footer ===== */
        .footer {
            margin-top: 110px;
            background: #05070D;
            color: var(--muted);
            font-size: 14px;
        }

        .footer-info-line {
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            background: rgba(255, 255, 255, 0.015);
        }

        .footer-info-line .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px 24px;
            min-height: 46px;
            padding-block: 8px;
        }

        .f-info {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--muted);
        }

        .f-info span:first-child {
            color: rgba(255, 255, 255, 0.82);
        }

        .f-info .sep {
            color: rgba(255, 255, 255, 0.3);
        }

        .footer-main {
            padding-bottom: 34px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr 1fr;
            gap: 60px;
            padding: 56px 0 36px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .logo-cn.footer-visible {
            font-size: 17px;
            font-weight: 800;
            color: #fff;
        }

        .footer-brand-text {
            margin-top: 18px;
            max-width: 420px;
            line-height: 1.85;
            color: var(--muted);
            font-size: 14px;
        }

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

        .footer-col h4 {
            font-size: 14px;
            font-weight: 800;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 12px;
            letter-spacing: 0.04em;
        }

        .footer-col a {
            display: block;
            padding: 6px 0;
            color: var(--muted);
            font-size: 14px;
        }

        .footer-col a:hover {
            color: var(--amber);
        }

        .footer-copy {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            padding-top: 26px;
            color: rgba(255, 255, 255, 0.45);
            font-size: 13px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1100px) {
            .value-card-large {
                grid-column: span 12;
            }
            .value-card-small {
                grid-column: span 6;
            }
            .review-card {
                break-inside: auto;
            }
            .reviews-grid {
                columns: 1;
            }
        }

        @media (max-width: 980px) {
            .header-flex {
                min-height: 70px;
            }
            .menu-toggle {
                display: inline-flex;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: calc(100% + 6px);
                left: 0;
                right: 0;
                background: #0B0F1D;
                border: 1px solid rgba(255, 255, 255, 0.1);
                border-radius: 18px;
                padding: 18px;
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            }
            .main-nav.nav-open {
                display: flex;
            }
            .nav-menu {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }
            .nav-link {
                padding: 12px 14px;
                border-radius: 14px;
            }
            .nav-link.active {
                background: rgba(109, 90, 230, 0.14);
            }
            .nav-link.active::after {
                display: none;
            }
            .header-cta {
                width: 100%;
                margin-top: 8px;
                height: 48px;
            }

            .hero-content {
                grid-template-columns: 1fr;
            }
            .hero-media {
                max-width: 640px;
            }
            .hero-float-card {
                right: 6px;
                bottom: -18px;
            }

            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-card {
                border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            }

            .feature-row,
            .feature-row.reverse {
                grid-template-columns: 1fr;
            }
            .feature-row.reverse .feature-media,
            .feature-media {
                order: initial;
            }

            .req-wrap {
                grid-template-columns: 1fr;
            }

            .faq-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

        @media (max-width: 640px) {
            .topbar-message {
                display: none;
            }

            .footer-info-line .container {
                justify-content: center;
            }

            .container {
                width: min(100%, 100%);
                padding-inline: 18px;
            }

            .hero {
                padding-top: 64px;
                padding-bottom: 70px;
            }

            .hero-title {
                font-size: 34px;
            }
            .hero-title span {
                font-size: 23px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .btn {
                padding: 0 20px;
            }

            .stats-strip {
                grid-template-columns: 1fr 1fr;
                border-radius: 20px;
            }
            .stat-card {
                padding: 22px 18px;
            }
            .stat-num {
                font-size: 28px;
            }

            .value-card-large,
            .value-card-small {
                grid-column: span 12;
            }

            .feature-copy h3 {
                font-size: 24px;
            }
            .feature-copy p {
                font-size: 15px;
            }

            .spec-item {
                flex-direction: column;
                gap: 6px;
            }
            .spec-item span {
                flex: initial;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-top: 40px;
            }
            .footer-cols {
                grid-template-columns: 1fr 1fr;
            }
            .footer-copy {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 420px) {
            .logo-sub {
                display: none;
            }
            .download-btn {
                width: 100%;
            }
        }

/* roulang page: category3 */
:root {
        --bg: #080A12;
        --surface: #11172B;
        --surface-2: #171F37;
        --ink: #F4F6FD;
        --muted: #C7CCDC;
        --faint: #8C93AC;
        --brand: #6D5AE6;
        --brand-deep: #332C6B;
        --amber: #F5B84A;
        --amber-2: #FFC96B;
        --mint: #70C7C2;
        --line: rgba(255, 255, 255, 0.08);
        --r-lg: 24px;
        --r-md: 16px;
        --r-pill: 999px;
        --maxw: 1240px;
        --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.14), 0 2px 0 rgba(109, 90, 230, 0.06) inset;
        --shadow-amber: 0 12px 32px rgba(245, 184, 74, 0.2);
        --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
    }

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

    html {
        scroll-behavior: smooth;
        background: var(--bg);
    }

    body {
        font-family: var(--font-cn);
        background: var(--bg);
        color: var(--muted);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
        overflow-x: hidden;
        min-height: 100vh;
    }

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

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

    button {
        font-family: inherit;
        border: none;
        background: none;
        cursor: pointer;
        color: inherit;
    }

    ul,
    ol {
        list-style: none;
    }

    a:focus-visible,
    button:focus-visible,
    summary:focus-visible {
        outline: 2px solid var(--amber);
        outline-offset: 4px;
        border-radius: 8px;
    }

    .container {
        width: min(1240px, 100% - 48px);
        margin-inline: auto;
    }

    .section {
        padding: clamp(64px, 9vw, 120px) 0;
    }

    .section-head {
        margin-bottom: clamp(36px, 5vw, 68px);
        max-width: 820px;
    }

    .section-head .section-eyebrow,
    .hero-eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-size: 13px;
        letter-spacing: 0.2em;
        text-transform: uppercase;
        color: var(--amber);
        font-weight: 700;
        margin-bottom: 18px;
    }

    .section-eyebrow .eyebrow-star {
        color: var(--amber);
        font-size: 15px;
    }

    .section-title {
        font-size: clamp(28px, 4vw, 44px);
        line-height: 1.25;
        letter-spacing: -0.02em;
        font-weight: 800;
        color: var(--ink);
        margin-bottom: 18px;
    }

    .section-desc {
        font-size: 16px;
        color: var(--faint);
        max-width: 700px;
    }

    .tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        border: 1px solid var(--line);
        background: rgba(255, 255, 255, 0.04);
        color: var(--muted);
        font-size: 12px;
        font-weight: 600;
        padding: 5px 12px;
        border-radius: 999px;
        line-height: 1.4;
    }

    .tag-amber {
        border-color: rgba(245, 184, 74, 0.32);
        background: rgba(245, 184, 74, 0.1);
        color: var(--amber-2);
    }

    .tag-mint {
        border-color: rgba(112, 199, 194, 0.3);
        background: rgba(112, 199, 194, 0.08);
        color: var(--mint);
    }

    .tag-brand {
        border-color: rgba(109, 90, 230, 0.4);
        background: rgba(109, 90, 230, 0.14);
        color: #D9D3FF;
    }

    .topbar {
        background: #0C0E1B;
        border-bottom: 1px solid var(--line);
        font-size: 13px;
        color: var(--faint);
    }

    .topbar-inner {
        min-height: 40px;
        display: flex;
        align-items: center;
        gap: 20px;
        justify-content: space-between;
    }

    .topbar-left {
        font-weight: 600;
        color: var(--muted);
    }

    .topbar-center {
        color: var(--faint);
        letter-spacing: 0.02em;
    }

    .topbar-action {
        color: var(--amber-2);
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-weight: 600;
        transition: color 0.2s ease;
    }

    .topbar-action:hover {
        color: #fff;
    }

    .tiny-star {
        font-size: 12px;
        line-height: 1;
    }

    .mainnav {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: rgba(8, 10, 18, 0.98);
        border-bottom: 1px solid transparent;
        transition: box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease;
    }

    .mainnav.is-scrolled {
        border-bottom-color: rgba(255, 255, 255, 0.08);
        box-shadow: 0 14px 36px rgba(0, 0, 0, 0.3);
    }

    .nav-wrap {
        display: flex;
        align-items: center;
        gap: clamp(20px, 3vw, 48px);
        min-height: 76px;
        flex-wrap: nowrap;
    }

    .brand {
        display: inline-flex;
        align-items: center;
        gap: 12px;
        min-width: 0;
        flex-shrink: 0;
    }

    .logo-mark {
        width: 38px;
        height: 38px;
        flex: 0 0 38px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        background: linear-gradient(135deg, var(--brand-deep), var(--brand));
        border-radius: 12px;
        box-shadow: 0 6px 18px rgba(93, 77, 209, 0.35);
    }

    .brand-copy {
        display: inline-flex;
        flex-direction: column;
        line-height: 1.15;
    }

    .brand-cn {
        font-size: 17px;
        font-weight: 800;
        color: var(--ink);
        letter-spacing: 0.02em;
        white-space: nowrap;
    }

    .brand-sub {
        font-size: 10px;
        letter-spacing: 0.22em;
        color: var(--faint);
        margin-top: 3px;
        white-space: nowrap;
    }

    .desktop-nav ul {
        display: flex;
        align-items: center;
        gap: clamp(18px, 2.4vw, 38px);
    }

    .desktop-nav a {
        position: relative;
        display: inline-block;
        font-size: 15px;
        font-weight: 600;
        color: var(--faint);
        padding: 10px 2px;
        transition: color 0.2s ease;
    }

    .desktop-nav a:hover {
        color: var(--ink);
    }

    .desktop-nav a.active {
        color: var(--ink);
    }

    .desktop-nav a.active::after {
        content: "";
        position: absolute;
        left: 0;
        right: 0;
        bottom: 2px;
        height: 3px;
        border-radius: 999px;
        background: linear-gradient(90deg, var(--amber), var(--brand));
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
        min-height: 48px;
        padding: 0 28px;
        border-radius: 999px;
        font-size: 15px;
        font-weight: 700;
        cursor: pointer;
        transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease, border-color 0.22s ease;
        line-height: 1.2;
    }

    .btn-primary {
        background: linear-gradient(135deg, var(--amber), var(--amber-2));
        color: #211A0B;
        box-shadow: var(--shadow-amber);
    }

    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 16px 38px rgba(245, 184, 74, 0.28);
    }

    .btn-primary:active {
        transform: translateY(1px);
        box-shadow: 0 8px 20px rgba(245, 184, 74, 0.2);
    }

    .btn-ghost {
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.14);
        color: var(--ink);
    }

    .btn-ghost:hover {
        border-color: rgba(255, 255, 255, 0.5);
        transform: translateY(-2px);
    }

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

    .btn-nav-cta {
        margin-left: auto;
        min-height: 44px;
        padding: 0 22px;
        font-size: 14px;
        box-shadow: none;
        flex-shrink: 0;
        background: linear-gradient(135deg, var(--amber), var(--amber-2));
        color: #211A0B;
        border-radius: 999px;
        font-weight: 700;
    }

    .btn-nav-cta:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-amber);
    }

    .nav-toggle {
        display: none;
        width: 44px;
        height: 44px;
        border: 1px solid var(--line);
        border-radius: 12px;
        background: rgba(255, 255, 255, 0.04);
        margin-left: auto;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 5px;
    }

    .nav-toggle span {
        width: 20px;
        height: 2px;
        background: var(--ink);
        border-radius: 999px;
        transition: transform 0.2s ease, opacity 0.2s ease;
    }

    .nav-toggle[aria-expanded="true"] span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .nav-toggle[aria-expanded="true"] span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle[aria-expanded="true"] span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .mobile-menu {
        display: none;
        border-top: 1px solid var(--line);
        background: #0B0E1B;
        padding: 12px 20px 24px;
    }

    .mobile-menu.open {
        display: block;
    }

    .mobile-menu a.mobile-link {
        display: block;
        padding: 14px 10px;
        font-weight: 600;
        color: var(--muted);
        font-size: 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .mobile-menu a.mobile-link:hover,
    .mobile-menu a.mobile-link.active {
        color: var(--ink);
    }

    .mobile-menu .mobile-download {
        margin-top: 18px;
        width: 100%;
    }

    .page-hero {
        position: relative;
        isolation: isolate;
        padding: clamp(56px, 8vw, 112px) 0 clamp(48px, 7vw, 96px);
        background: var(--bg);
        overflow: hidden;
    }

    .hero-bg {
        position: absolute;
        inset: 0;
        z-index: -2;
        background-image: url('/assets/images/backpic/back-3.webp');
        background-position: center;
        background-repeat: no-repeat;
        background-size: cover;
        opacity: 0.32;
    }

    .hero-bg::after {
        content: "";
        position: absolute;
        inset: 0;
        background:
            radial-gradient(circle at 24% 26%, rgba(109, 90, 230, 0.42), transparent 38%),
            radial-gradient(circle at 78% 90%, rgba(245, 184, 74, 0.16), transparent 32%),
            linear-gradient(120deg, rgba(8, 10, 18, 0.98) 20%, rgba(41, 30, 92, 0.78) 62%, rgba(8, 10, 18, 0.88));
    }

    .hero-grid {
        display: grid;
        grid-template-columns: 1.04fr 0.96fr;
        gap: clamp(28px, 5vw, 72px);
        align-items: center;
    }

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

    .hero-eyebrow {
        margin-bottom: 20px;
    }

    .hero-title {
        font-size: clamp(38px, 5.5vw, 64px);
        line-height: 1.16;
        letter-spacing: -0.03em;
        font-weight: 900;
        color: var(--ink);
        margin-bottom: 24px;
    }

    .hero-title .star-accent {
        background: linear-gradient(100deg, var(--amber), #fff2d8);
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
    }

    .hero-lead {
        font-size: 18px;
        color: var(--muted);
        max-width: 610px;
        margin-bottom: 32px;
    }

    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        margin-bottom: 28px;
    }

    .hero-trust {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        color: var(--faint);
        font-size: 14px;
    }

    .status-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--mint);
        box-shadow: 0 0 0 4px rgba(112, 199, 194, 0.12);
        display: inline-block;
    }

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

    .hero-shot {
        border-radius: 24px;
        border: 1px solid rgba(255, 255, 255, 0.12);
        box-shadow: 0 24px 70px rgba(0, 0, 0, 0.45), 0 8px 30px rgba(109, 90, 230, 0.16);
        width: 100%;
        object-fit: cover;
        aspect-ratio: 4 / 3;
    }

    .hero-version-badge {
        position: absolute;
        top: -18px;
        right: 18px;
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 14px 22px;
        border-radius: 999px;
        background: linear-gradient(135deg, var(--brand-deep), var(--brand));
        color: #fff;
        font-weight: 800;
        font-size: 17px;
        border: 2px solid rgba(255, 255, 255, 0.22);
        box-shadow: 0 18px 50px rgba(55, 44, 150, 0.42);
    }

    .hero-float-card {
        position: absolute;
        left: -18px;
        bottom: 26px;
        background: rgba(17, 23, 43, 0.92);
        border: 1px solid var(--line);
        border-radius: 18px;
        padding: 16px 20px;
        backdrop-filter: blur(10px);
        box-shadow: 0 14px 40px rgba(0, 0, 0, 0.26);
        display: flex;
        align-items: center;
        gap: 14px;
    }

    .float-icon {
        width: 40px;
        height: 40px;
        border-radius: 12px;
        background: rgba(245, 184, 74, 0.12);
        color: var(--amber);
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

    .float-text span {
        display: block;
        color: var(--faint);
        font-size: 12px;
        line-height: 1.4;
    }

    .float-text strong {
        color: var(--ink);
        font-size: 15px;
        line-height: 1.4;
        display: block;
    }

    .stats-strip {
        background: linear-gradient(180deg, transparent, rgba(23, 31, 55, 0.5));
        padding: 22px 0 26px;
    }

    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
    }

    .stat-card {
        background: rgba(17, 23, 43, 0.78);
        border: 1px solid var(--line);
        border-radius: 18px;
        padding: 22px 20px 18px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
        display: flex;
        flex-direction: column;
        min-height: 108px;
        transition: transform 0.22s ease, border-color 0.22s ease;
    }

    .stat-card:hover {
        transform: translateY(-2px);
        border-color: rgba(109, 90, 230, 0.28);
    }

    .stat-num {
        font-size: 30px;
        font-weight: 900;
        color: var(--amber);
        line-height: 1.1;
        letter-spacing: -0.02em;
        margin-bottom: 10px;
    }

    .stat-num small {
        font-size: 17px;
        font-weight: 800;
        margin-left: 3px;
        color: var(--amber-2);
    }

    .stat-label {
        color: var(--faint);
        font-size: 14px;
        line-height: 1.5;
        margin-top: auto;
    }

    .timeline-area {
        background: linear-gradient(180deg, #0A0C18, #0D1020);
    }

    .timeline-wrap {
        position: relative;
    }

    .timeline-rows {
        position: relative;
    }

    .timeline-rows::before {
        content: "";
        position: absolute;
        top: 12px;
        bottom: 12px;
        left: 210px;
        width: 2px;
        background: linear-gradient(180deg, var(--brand), rgba(109, 90, 230, 0.22), var(--amber));
        opacity: 0.35;
    }

    .timeline-row {
        display: grid;
        grid-template-columns: 188px 1fr;
        gap: 48px;
        padding-bottom: clamp(34px, 5vw, 58px);
        position: relative;
    }

    .timeline-meta {
        position: relative;
        text-align: right;
        padding-top: 18px;
        padding-right: 38px;
    }

    .tl-date {
        font-size: 16px;
        color: var(--ink);
        font-weight: 700;
        line-height: 1.4;
        display: block;
        white-space: nowrap;
    }

    .tl-tag {
        font-size: 13px;
        color: var(--faint);
        display: block;
        margin-top: 6px;
        white-space: nowrap;
    }

    .node-dot {
        position: absolute;
        right: -28px;
        top: 30px;
        width: 14px;
        height: 14px;
        border-radius: 50%;
        background: var(--bg);
        border: 4px solid var(--amber);
        box-shadow: 0 0 0 6px rgba(245, 184, 74, 0.08);
        z-index: 2;
        pointer-events: none;
    }

    .version-card {
        background: linear-gradient(180deg, rgba(24, 31, 58, 0.92), rgba(16, 21, 39, 0.96));
        border: 1px solid var(--line);
        border-left: 3px solid rgba(109, 90, 230, 0.68);
        border-radius: 20px;
        padding: clamp(22px, 3vw, 32px);
        box-shadow: var(--shadow-card);
        transition: transform 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease;
    }

    .version-card:hover {
        transform: translateY(-3px);
        border-color: rgba(109, 90, 230, 0.42);
        box-shadow: 0 22px 44px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(109, 90, 230, 0.16);
    }

    .version-card-card-head {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 10px;
        margin-bottom: 16px;
    }

    .version-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: linear-gradient(135deg, rgba(109, 90, 230, 0.34), rgba(109, 90, 230, 0.12));
        border: 1px solid rgba(109, 90, 230, 0.32);
        font-weight: 900;
        padding: 7px 15px;
        border-radius: 999px;
        color: #E6E1FF;
        font-size: 14px;
        letter-spacing: 0.02em;
    }

    .status-chip {
        display: inline-flex;
        align-items: center;
        gap: 7px;
        background: rgba(112, 199, 194, 0.12);
        border: 1px solid rgba(112, 199, 194, 0.26);
        color: var(--mint);
        border-radius: 999px;
        font-size: 13px;
        font-weight: 600;
        padding: 5px 14px;
    }

    .status-chip.stable::before {
        content: "";
        width: 7px;
        height: 7px;
        background: var(--mint);
        border-radius: 50%;
        box-shadow: 0 0 0 3px rgba(112, 199, 194, 0.12);
    }

    .version-card h3 {
        font-size: 22px;
        line-height: 1.4;
        color: var(--ink);
        font-weight: 800;
        letter-spacing: -0.01em;
        margin-bottom: 12px;
    }

    .version-card>p {
        color: var(--faint);
        font-size: 15px;
        margin-bottom: 18px;
        max-width: 760px;
    }

    .change-list {
        display: grid;
        gap: 10px;
        margin-bottom: 22px;
    }

    .change-list li {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        font-size: 15px;
        color: var(--muted);
    }

    .change-dot {
        color: var(--amber);
        font-size: 12px;
        line-height: 1.9;
        flex: 0 0 auto;
    }

    .change-list strong {
        color: var(--ink);
        font-weight: 700;
        margin-right: 4px;
    }

    .version-foot {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        padding-top: 18px;
        border-top: 1px solid rgba(255, 255, 255, 0.07);
    }

    .highlights-area {
        background: #0B0C18;
    }

    .highlight-grid {
        display: grid;
        grid-template-columns: 1.1fr 0.9fr;
        grid-template-areas:
            "big one"
            "big two";
        gap: 24px;
    }

    .highlight-card {
        background: linear-gradient(145deg, #151D36, #11172B);
        border: 1px solid var(--line);
        border-radius: 24px;
        padding: clamp(24px, 4vw, 38px);
        box-shadow: var(--shadow-card);
        display: flex;
        flex-direction: column;
        transition: transform 0.25s ease, border-color 0.25s ease;
    }

    .highlight-card:hover {
        transform: translateY(-3px);
        border-color: rgba(109, 90, 230, 0.3);
    }

    .highlight-main {
        grid-area: big;
        justify-content: space-between;
        min-height: 420px;
    }

    .highlight-one {
        grid-area: one;
    }

    .highlight-two {
        grid-area: two;
    }

    .highlight-icon {
        width: 48px;
        height: 48px;
        border-radius: 14px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, rgba(245, 184, 74, 0.18), rgba(245, 184, 74, 0.04));
        border: 1px solid rgba(245, 184, 74, 0.24);
        color: var(--amber);
        margin-bottom: 22px;
    }

    .highlight-muted-icon {
        background: linear-gradient(135deg, rgba(109, 90, 230, 0.2), rgba(109, 90, 230, 0.04));
        border-color: rgba(109, 90, 230, 0.3);
        color: #B6A8FF;
    }

    .highlight-card h3 {
        color: var(--ink);
        font-size: 23px;
        font-weight: 800;
        line-height: 1.4;
        margin-bottom: 14px;
    }

    .highlight-card.small-card h3 {
        font-size: 19px;
        margin-bottom: 8px;
    }

    .highlight-card p {
        color: var(--faint);
        font-size: 15px;
        margin-bottom: 20px;
    }

    .highlight-card small {
        color: var(--faint);
        display: block;
        font-size: 14px;
        line-height: 1.6;
    }

    .highlight-main-img {
        margin-top: 12px;
        border-radius: 16px;
        border: 1px solid var(--line);
        object-fit: cover;
        width: 100%;
        aspect-ratio: 16 / 9;
        box-shadow: 0 12px 36px rgba(0, 0, 0, 0.3);
    }

    .requirements-area {
        background: linear-gradient(180deg, #0D1020, #080A12);
    }

    .requirements-panel {
        background: rgba(17, 23, 43, 0.66);
        border: 1px solid var(--line);
        border-radius: 28px;
        padding: clamp(24px, 4.6vw, 48px);
        box-shadow: var(--shadow-card);
        display: grid;
        grid-template-columns: 1fr 1.12fr;
        gap: clamp(30px, 5vw, 60px);
        align-items: start;
    }

    .requirements-copy h2 {
        color: var(--ink);
        font-size: clamp(24px, 3vw, 36px);
        font-weight: 800;
        line-height: 1.3;
        letter-spacing: -0.02em;
        margin-bottom: 16px;
    }

    .requirements-copy p {
        color: var(--faint);
        font-size: 15px;
        margin-bottom: 22px;
    }

    .req-list {
        display: grid;
        gap: 18px;
    }

    .req-item {
        background: var(--surface);
        border: 1px solid var(--line);
        border-radius: 18px;
        padding: 18px 20px;
        display: grid;
        grid-template-columns: 30px 1fr;
        gap: 12px;
        align-items: center;
        transition: border-color 0.2s ease, transform 0.2s ease;
    }

    .req-item:hover {
        border-color: rgba(109, 90, 230, 0.36);
        transform: translateX(3px);
    }

    .req-check {
        width: 28px;
        height: 28px;
        border-radius: 50%;
        background: rgba(112, 199, 194, 0.12);
        border: 1px solid rgba(112, 199, 194, 0.32);
        color: var(--mint);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 13px;
        font-weight: 900;
    }

    .req-item strong {
        color: var(--ink);
        display: block;
        font-size: 15px;
        line-height: 1.5;
    }

    .req-item small {
        color: var(--faint);
        font-size: 13px;
        line-height: 1.5;
        display: block;
    }

    .feedback-area {
        background: #0A0C17;
    }

    .feedback-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 22px;
    }

    .feedback-card {
        background: #11172B;
        border: 1px solid var(--line);
        border-radius: 20px;
        padding: 26px 24px;
        height: 100%;
        display: flex;
        flex-direction: column;
        transition: transform 0.22s ease, border-color 0.22s ease;
    }

    .feedback-card:hover {
        transform: translateY(-3px);
        border-color: rgba(245, 184, 74, 0.2);
    }

    .stars {
        display: flex;
        gap: 3px;
        color: var(--amber);
        margin-bottom: 18px;
    }

    .stars svg {
        width: 16px;
        height: 16px;
    }

    .feedback-card blockquote {
        font-size: 15px;
        line-height: 1.8;
        color: var(--muted);
        margin-bottom: 20px;
        flex: 1;
    }

    .feedback-source {
        color: var(--faint);
        font-size: 14px;
        font-style: normal;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding-top: 14px;
        margin-top: auto;
    }

    .feedback-source strong {
        color: var(--ink);
    }

    .faq-area {
        background: var(--bg);
    }

    .faq-layout {
        display: grid;
        grid-template-columns: 0.72fr 1.28fr;
        gap: clamp(30px, 5vw, 80px);
        align-items: start;
    }

    .faq-intro .section-title {
        margin-bottom: 14px;
    }

    .faq-intro p {
        color: var(--faint);
        font-size: 15px;
        margin-bottom: 28px;
    }

    .faq-item {
        background: var(--surface);
        border: 1px solid var(--line);
        border-radius: 16px;
        margin-bottom: 12px;
        transition: border-color 0.2s ease, background 0.2s ease;
    }

    .faq-item[open] {
        border-color: rgba(109, 90, 230, 0.3);
        background: rgba(23, 31, 55, 0.82);
    }

    .faq-item summary {
        list-style: none;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 18px;
        padding: 20px 22px;
        color: var(--ink);
        font-weight: 700;
        font-size: 16px;
        line-height: 1.5;
        transition: color 0.2s ease;
    }

    .faq-item summary:hover {
        color: var(--amber-2);
    }

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

    .faq-icon {
        width: 28px;
        height: 28px;
        flex: 0 0 28px;
        border-radius: 50%;
        background: rgba(245, 184, 74, 0.12);
        color: var(--amber);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 22px;
        line-height: 1;
        font-weight: 400;
        transition: transform 0.24s ease, background 0.24s ease;
    }

    .faq-item[open] .faq-icon {
        transform: rotate(135deg);
        background: rgba(245, 184, 74, 0.22);
    }

    .faq-answer {
        padding: 0 22px 22px;
        color: var(--faint);
        font-size: 15px;
        line-height: 1.8;
        max-width: 760px;
    }

    .cta-area {
        position: relative;
        isolation: isolate;
        overflow: hidden;
        padding: clamp(70px, 9vw, 120px) 0;
        background: var(--bg);
    }

    .cta-bg {
        position: absolute;
        inset: 0;
        z-index: -2;
        background-image: url('/assets/images/backpic/back-1.webp');
        background-position: center bottom;
        background-size: cover;
        background-repeat: no-repeat;
        opacity: 0.28;
    }

    .cta-bg::after {
        content: "";
        position: absolute;
        inset: 0;
        background:
            radial-gradient(circle at 50% 20%, rgba(109, 90, 230, 0.24), transparent 52%),
            linear-gradient(180deg, #080A12 0%, rgba(8, 10, 18, 0.62) 50%, #080A12 100%);
    }

    .cta-panel {
        position: relative;
        z-index: 2;
        text-align: center;
        max-width: 920px;
        margin-inline: auto;
    }

    .cta-panel h2 {
        color: var(--ink);
        font-size: clamp(32px, 5vw, 48px);
        line-height: 1.25;
        letter-spacing: -0.03em;
        font-weight: 900;
        margin-bottom: 18px;
    }

    .cta-panel>p {
        color: var(--muted);
        font-size: 17px;
        margin-bottom: 38px;
        max-width: 680px;
        margin-inline: auto;
    }

    .download-grid {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 16px;
        max-width: 960px;
        margin-inline: auto;
    }

    .download-btn {
        background: rgba(17, 23, 43, 0.9);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 16px;
        padding: 20px 14px 16px;
        text-align: center;
        color: var(--ink);
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 8px;
        transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease;
    }

    .download-btn:hover {
        transform: translateY(-3px);
        border-color: rgba(109, 90, 230, 0.42);
        background: rgba(23, 31, 55, 0.98);
        box-shadow: 0 12px 34px rgba(0, 0, 0, 0.2);
    }

    .download-platform {
        font-size: 17px;
        font-weight: 800;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .download-btn small {
        color: var(--faint);
        font-size: 13px;
    }

    .cta-trust {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 18px;
        margin-top: 30px;
        color: var(--faint);
        font-size: 13px;
    }

    .cta-trust span {
        display: inline-flex;
        align-items: center;
        gap: 7px;
    }

    .cta-trust .status-dot {
        width: 6px;
        height: 6px;
        box-shadow: none;
    }

    .footer {
        background: #070912;
        border-top: 1px solid var(--line);
    }

    .footer-info-line {
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        background: rgba(255, 255, 255, 0.015);
        padding: 14px 0;
        font-size: 13px;
        color: var(--faint);
    }

    .footer-info-line .container {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 10px 26px;
        justify-content: space-between;
    }

    .f-info {
        display: inline-flex;
        align-items: center;
        gap: 10px;
    }

    .f-info .sep {
        color: rgba(255, 255, 255, 0.26);
    }

    .footer-main {
        padding: 56px 0 92px;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.2fr 1fr;
        gap: clamp(30px, 6vw, 90px);
        margin-bottom: 44px;
    }

    .footer-logo {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 18px;
    }

    .logo-text {
        display: flex;
        flex-direction: column;
    }

    .logo-cn {
        font-weight: 800;
        color: var(--ink);
        letter-spacing: 0.02em;
        line-height: 1.2;
    }

    .logo-sub {
        font-size: 10px;
        letter-spacing: 0.2em;
        color: var(--faint);
        margin-top: 4px;
    }

    .footer-brand-text {
        color: var(--faint);
        font-size: 14px;
        line-height: 1.9;
        max-width: 520px;
    }

    .footer-cols {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .footer-col h4 {
        color: var(--ink);
        font-size: 15px;
        font-weight: 800;
        margin-bottom: 14px;
        letter-spacing: 0.05em;
    }

    .footer-col li {
        margin-bottom: 10px;
    }

    .footer-col a {
        color: var(--faint);
        font-size: 14px;
        transition: color 0.2s ease, padding-left 0.2s ease;
    }

    .footer-col a:hover {
        color: var(--amber-2);
        padding-left: 4px;
    }

    .footer-copy {
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding-top: 28px;
        display: flex;
        flex-wrap: wrap;
        gap: 6px 20px;
        justify-content: space-between;
        color: var(--faint);
        font-size: 13px;
    }

    @media (max-width: 1024px) and (min-width: 961px) {
        .hero-grid {
            grid-template-columns: 1fr 0.9fr;
            gap: 36px;
        }

        .hero-title {
            font-size: 44px;
        }

        .timeline-row {
            grid-template-columns: 166px 1fr;
            gap: 36px;
        }

        .timeline-rows::before {
            left: 184px;
        }

        .node-dot {
            right: -27px;
        }

        .tl-date {
            font-size: 15px;
        }
    }

    @media (max-width: 960px) {
        .topbar-center {
            display: none;
        }

        .desktop-nav,
        .btn-nav-cta {
            display: none;
        }

        .nav-toggle {
            display: inline-flex;
        }

        .nav-wrap {
            min-height: 70px;
        }

        .hero-grid {
            grid-template-columns: 1fr;
            gap: 48px;
        }

        .hero-media {
            max-width: 640px;
        }

        .hero-title {
            font-size: 48px;
        }

        .stats-grid {
            grid-template-columns: repeat(4, 1fr);
        }

        .timeline-rows::before {
            display: none;
        }

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

        .timeline-meta {
            text-align: left;
            padding: 0 0 0 22px;
            display: flex;
            align-items: flex-end;
            gap: 18px;
            border-left: 3px solid rgba(109, 90, 230, 0.35);
            margin-left: 6px;
            padding-bottom: 14px;
        }

        .node-dot {
            display: none;
        }

        .tl-date {
            font-size: 16px;
        }

        .tl-tag {
            margin-top: 0;
        }

        .highlight-grid {
            grid-template-columns: 1fr 1fr;
            grid-template-areas:
                "big big"
                "one two";
        }

        .highlight-main {
            min-height: auto;
        }

        .requirements-panel {
            grid-template-columns: 1fr;
        }

        .feedback-grid {
            grid-template-columns: 1fr;
            max-width: 560px;
            margin-inline: auto;
        }

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

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

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

        .footer-cols {
            max-width: 560px;
        }
    }

    @media (max-width: 680px) {
        .container {
            width: min(100% - 32px, 1240px);
        }

        .brand-cn {
            font-size: 16px;
        }

        .brand-sub {
            font-size: 9px;
        }

        .logo-mark {
            width: 34px;
            height: 34px;
            flex-basis: 34px;
        }

        .topbar {
            font-size: 12px;
        }

        .topbar-left {
            font-size: 13px;
        }

        .topbar-action {
            font-size: 13px;
        }

        .hero-title {
            font-size: 36px;
        }

        .hero-lead {
            font-size: 16px;
        }

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

        .hero-float-card {
            left: 8px;
            right: 8px;
            bottom: 10px;
        }

        .hero-version-badge {
            top: -12px;
            right: 10px;
            padding: 10px 16px;
            font-size: 14px;
        }

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

        .stat-card {
            min-height: 100px;
        }

        .section-head {
            margin-bottom: 34px;
        }

        .section-title {
            font-size: 28px;
        }

        .section-desc {
            font-size: 15px;
        }

        .version-card {
            padding: 20px;
        }

        .version-card h3 {
            font-size: 19px;
        }

        .highlight-grid {
            grid-template-columns: 1fr;
            grid-template-areas: "big" "one" "two";
        }

        .requirements-copy p {
            font-size: 14px;
        }

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

        .cta-panel>p {
            font-size: 15px;
        }

        .footer-info-line .container {
            justify-content: center;
            text-align: center;
        }

        .footer-main {
            padding: 40px 0 68px;
        }

        .footer-copy {
            justify-content: center;
            text-align: center;
        }
    }

    @media (max-width: 460px) {
        .topbar-left {
            display: none;
        }

        .topbar-inner {
            justify-content: center;
        }
    }