/* roulang page: index */
:root {
  --primary: #00A8FF;
  --secondary: #7B5CFF;
  --accent: #00E5A0;
  --alert: #FF8A3D;
  --bg-base: #060910;
  --bg-lift: #0B1120;
  --glass-bg: rgba(15, 23, 42, 0.60);
  --glass-border: rgba(140, 180, 255, 0.10);
  --border-line: rgba(140, 180, 255, 0.06);
  --text-title: #EAF2FF;
  --text-body: #B6C6DC;
  --text-muted: #7A8DA6;
  --text-white: #FFFFFF;
  --disabled: #3D4C63;
  --placeholder: #4E607B;
  --radius-card: 16px;
  --radius-inner: 12px;
  --radius-btn: 12px;
  --radius-tag: 999px;
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.28);
  --shadow-lift: 0 16px 48px rgba(2, 6, 20, 0.45);
  --shadow-glow: 0 0 24px rgba(0, 168, 255, 0.35), 0 4px 12px rgba(123, 92, 255, 0.22);
  --font-main: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-base);
  background-image: radial-gradient(circle, rgba(140, 180, 255, 0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--text-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--text-title);
}

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

input {
  font-family: inherit;
}

h1, h2, h3, h4 {
  color: var(--text-title);
  line-height: 1.3;
  font-weight: 700;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: clamp(20px, 4vw, 48px);
  padding-right: clamp(20px, 4vw, 48px);
}

.section {
  padding: 96px 0;
}

.section-lift {
  background: linear-gradient(180deg, var(--bg-lift) 0%, var(--bg-base) 100%);
}

.section-head {
  margin-bottom: 40px;
}

.section-head .eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 8px;
  font-weight: 600;
}

.section-head h2 {
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 8px;
}

.section-head p {
  color: var(--text-muted);
  font-size: 1rem;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  font-size: 0.95rem;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(0, 168, 255, 0.5), 0 6px 16px rgba(123, 92, 255, 0.35);
}

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

.btn-ghost {
  background: rgba(140, 180, 255, 0.06);
  border: 1px solid rgba(140, 180, 255, 0.18);
  color: var(--text-title);
}

.btn-ghost:hover {
  border-color: rgba(0, 168, 255, 0.5);
  color: var(--text-title);
  background: rgba(0, 168, 255, 0.08);
}

.btn-lg {
  height: 54px;
  padding: 0 36px;
  font-size: 1.05rem;
  font-weight: 700;
}

.btn-glow {
  position: relative;
  z-index: 1;
  overflow: visible;
}

.btn-glow::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 16px;
  border: 2px solid rgba(0, 168, 255, 0.45);
  animation: btnPulse 3s infinite;
  z-index: -1;
  pointer-events: none;
}

@keyframes btnPulse {
  0% {
    opacity: 0.5;
    transform: scale(1);
  }
  50% {
    opacity: 0;
    transform: scale(1.15);
  }
  100% {
    opacity: 0.5;
    transform: scale(1);
  }
}

.btn-header {
  height: 40px;
  padding: 0 20px;
  font-size: 0.9rem;
  border-radius: 10px;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 9, 16, 0.72);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-bottom: 1px solid var(--border-line);
  height: 72px;
}

.header-inner {
  max-width: 1280px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.logo-badge {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  color: #fff;
  box-shadow: 0 0 16px rgba(0, 168, 255, 0.35);
}

.logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-title);
  letter-spacing: 0.02em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  display: inline-block;
  padding: 8px 16px;
  font-size: 0.95rem;
  color: var(--text-body);
  border-radius: 8px;
  position: relative;
  transition: color 0.18s ease;
}

.nav-link:hover {
  color: var(--text-title);
}

.nav-link.active {
  color: #fff;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0, 168, 255, 0.6);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--glass-border);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--text-title);
  position: relative;
  transition: background 0.2s;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background-color: var(--text-title);
}

.nav-toggle span::before {
  top: -6px;
}

.nav-toggle span::after {
  top: 6px;
}

.mobile-drop {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: rgba(6, 9, 16, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 99;
  padding: 16px;
  flex-direction: column;
  gap: 4px;
}

.mobile-drop a {
  display: block;
  padding: 14px 16px;
  border-radius: 12px;
  color: var(--text-body);
  font-size: 1rem;
}

.mobile-drop a.active {
  background: rgba(0, 168, 255, 0.1);
  color: #fff;
}

/* ===== 移动底部 Tab ===== */
.mobile-tabbar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 120;
  height: 62px;
  padding-bottom: env(safe-area-inset-bottom);
  background: rgba(6, 9, 16, 0.82);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-top: 1px solid var(--glass-border);
}

.mobile-tabbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-around;
  height: 62px;
}

.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 11px;
  color: var(--text-muted);
  padding: 4px 12px;
  border-radius: 20px;
  min-width: 52px;
  position: relative;
  transition: color 0.2s, background 0.2s;
}

.tab-item svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.tab-item.active {
  color: var(--primary);
  background: rgba(0, 168, 255, 0.1);
}

.tab-item.active::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(0, 168, 255, 0.8);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 80px 0 120px;
  overflow: hidden;
  background-image: radial-gradient(circle, rgba(140, 180, 255, 0.025) 1px, transparent 1px);
  background-size: 32px 32px;
}

.hero::before {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.12;
  filter: blur(90px);
  top: 10%;
  right: 12%;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: var(--secondary);
  opacity: 0.1;
  filter: blur(90px);
  bottom: 0;
  left: 4%;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: clamp(40px, 6vw, 80px);
}

.hero-copy {
  flex: 0 0 55%;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.6rem);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin-bottom: 20px;
}

.hero h1 .grad {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: 1.15rem;
  line-height: 1.7;
  color: #9FB3D1;
  margin-bottom: 32px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.hero-stats strong {
  color: var(--primary);
  font-weight: 700;
  font-feature-settings: "tnum";
  font-size: 1.1rem;
}

.stat-divider {
  width: 1px;
  height: 20px;
  background: var(--glass-border);
}

/* Hero 竖屏模型 */
.hero-phone {
  flex: 0 0 45%;
  display: flex;
  justify-content: center;
  position: relative;
}

.phone-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(0, 168, 255, 0.14), transparent 65%);
  pointer-events: none;
}

.phone-frame {
  position: relative;
  width: clamp(220px, 28vw, 320px);
  max-height: 560px;
  aspect-ratio: 9 / 16;
  border-radius: 22px;
  overflow: hidden;
  background: var(--bg-lift);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-lift), 0 0 40px rgba(0, 168, 255, 0.08);
}

.phone-card {
  position: absolute;
  left: 0;
  right: 0;
  border-radius: 18px;
  overflow: hidden;
  background: var(--bg-lift);
}

.phone-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.main-card {
  top: 0;
  bottom: 0;
  z-index: 2;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.main-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 0 30px rgba(0, 168, 255, 0.25);
}

.next-card {
  bottom: -18%;
  height: 60%;
  z-index: 1;
  opacity: 0.6;
}

.card-gradient {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 60%;
  background: linear-gradient(180deg, transparent, rgba(6, 9, 16, 0.92));
  pointer-events: none;
}

.card-info {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  z-index: 3;
  color: #fff;
}

.card-info h3 {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 6px;
  color: #fff;
}

.hot-value {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.85);
  font-feature-settings: "tnum";
}

.duration {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
  z-index: 3;
  font-feature-settings: "tnum";
}

.status {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(0, 229, 160, 0.2);
  border: 1px solid rgba(0, 229, 160, 0.35);
  color: var(--accent);
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
  z-index: 3;
}

.swipe-hint {
  position: absolute;
  bottom: -30px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
  animation: swipeFloat 2s ease-in-out infinite;
  z-index: 4;
}

@keyframes swipeFloat {
  0%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(-5px);
  }
}

/* ===== 爆款片段 ===== */
.hot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 8px;
}

.hot-card {
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
  scroll-snap-align: start;
  display: block;
}

.hot-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lift);
  border-color: rgba(0, 168, 255, 0.35);
}

.hot-card-cover {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
}

.hot-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.hot-card:hover .hot-card-cover img {
  transform: scale(1.03);
}

.hot-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--alert);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 6px;
  z-index: 2;
  box-shadow: 0 0 14px rgba(255, 138, 61, 0.4);
}

.new-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--accent);
  color: #07140e;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 6px;
  z-index: 2;
}

.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: transform 0.2s, box-shadow 0.2s;
}

.play-btn svg {
  width: 20px;
  height: 20px;
  fill: #fff;
  margin-left: 2px;
}

.hot-card:hover .play-btn {
  transform: translate(-50%, -50%) scale(1.1);
  box-shadow: 0 0 24px rgba(0, 168, 255, 0.5);
}

.hot-card-body {
  padding: 16px;
}

.hot-card-body h3 {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-title);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.8em;
}

.hot-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 3px 10px;
  border-radius: var(--radius-tag);
  background: rgba(0, 168, 255, 0.08);
  border: 1px solid rgba(0, 168, 255, 0.12);
}

.hot-num {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-feature-settings: "tnum";
  display: flex;
  align-items: center;
  gap: 4px;
}

.hot-num svg {
  width: 14px;
  height: 14px;
  fill: var(--alert);
}

/* ===== 种草清单 ===== */
.pick-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.pick-card {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  position: relative;
  overflow: hidden;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.pick-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 30px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent);
  pointer-events: none;
}

.pick-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 168, 255, 0.35);
  box-shadow: var(--shadow-lift);
}

.pick-num {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1;
  color: rgba(255, 255, 255, 0.1);
  -webkit-text-stroke: 1px rgba(140, 180, 255, 0.2);
  flex-shrink: 0;
  min-width: 52px;
  font-feature-settings: "tnum";
}

.pick-content {
  flex: 1;
}

.pick-content h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.pick-content p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tags span {
  font-size: 0.78rem;
  color: var(--text-body);
  background: rgba(140, 180, 255, 0.06);
  border: 1px solid var(--glass-border);
  padding: 2px 10px;
  border-radius: var(--radius-tag);
}

.btn-pick {
  flex-shrink: 0;
  height: 34px;
  padding: 0 16px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s, box-shadow 0.2s;
  white-space: nowrap;
}

.btn-pick:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 168, 255, 0.35);
}

/* ===== 口碑条 ===== */
.review-wrap {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
  align-items: stretch;
}

.rating-panel {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 32px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.rating-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 168, 255, 0.08), rgba(123, 92, 255, 0.05));
  pointer-events: none;
}

.rating-score {
  font-size: 3.6rem;
  font-weight: 800;
  color: var(--text-title);
  line-height: 1.1;
  text-shadow: 0 0 24px rgba(0, 168, 255, 0.3);
  font-feature-settings: "tnum";
}

.rating-stars {
  display: flex;
  gap: 2px;
  margin: 12px 0 8px;
}

.rating-stars svg {
  width: 18px;
  height: 18px;
  fill: var(--primary);
}

.rating-count {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.review-scroll {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 8px;
  scroll-snap-type: x mandatory;
}

.review-card {
  flex: 0 0 320px;
  background: rgba(8, 12, 22, 0.6);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 20px;
  scroll-snap-align: start;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.review-head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.review-user {
  flex: 1;
}

.review-name {
  font-size: 0.9rem;
  color: var(--text-title);
  font-weight: 600;
}

.review-stars {
  color: var(--primary);
  font-size: 0.75rem;
  letter-spacing: 1px;
}

.review-text {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-body);
}

.review-text::before {
  content: "“";
  color: var(--primary);
  font-size: 1.2em;
  margin-right: 2px;
}

.review-text::after {
  content: "”";
  color: var(--primary);
  font-size: 1.2em;
  margin-left: 2px;
}

.review-tried {
  text-align: right;
  font-size: 0.78rem;
  color: var(--accent);
  margin-top: auto;
}

/* ===== CTA ===== */
.cta-section {
  padding: 100px 0;
  background: radial-gradient(ellipse at center, var(--bg-lift) 0%, var(--bg-base) 75%);
  position: relative;
  overflow: hidden;
}

.cta-container {
  text-align: center;
  max-width: 680px;
}

.cta-container h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: 12px;
}

.cta-container p {
  color: var(--text-muted);
  margin-top: 24px;
  font-size: 0.9rem;
}

.cta-trust {
  display: flex;
  justify-content: center;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.cta-trust span + span::before {
  content: "·";
  margin-right: 12px;
  color: var(--primary);
}

/* ===== 最新资讯 ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
  border-color: rgba(0, 168, 255, 0.3);
}

.news-cover {
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  position: relative;
}

.news-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.news-card:hover .news-cover img {
  transform: scale(1.03);
}

.news-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.tag-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}

.news-time {
  font-feature-settings: "tnum";
}

.news-body h3 {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 8px;
}

.news-body h3 a {
  color: var(--text-title);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s, transform 0.2s;
}

.news-body h3 a:hover {
  color: var(--primary);
  transform: translateX(2px);
}

.news-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.news-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s;
}

.news-link:hover {
  gap: 8px;
  color: var(--text-title);
}

.news-empty {
  grid-column: 1 / -1;
  height: 220px;
  border-radius: var(--radius-card);
  border: 1px dashed var(--disabled);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-muted);
  background: rgba(15, 23, 42, 0.3);
}

.empty-icon {
  font-size: 2rem;
  color: var(--disabled);
}

/* ===== FAQ ===== */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.faq-item {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  transition: border-color 0.2s;
}

.faq-item[open] {
  border-color: rgba(0, 168, 255, 0.35);
}

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-title);
  text-align: left;
  border-radius: var(--radius-card);
}

.faq-icon {
  width: 22px;
  height: 22px;
  position: relative;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: var(--primary);
  border-radius: 2px;
  transition: transform 0.3s ease;
}

.faq-icon::before {
  top: 10px;
  left: 3px;
  right: 3px;
  height: 2px;
}

.faq-icon::after {
  left: 10px;
  top: 3px;
  bottom: 3px;
  width: 2px;
}

.faq-item[open] .faq-icon::after {
  transform: scaleY(0);
}

.faq-a {
  padding: 0 24px 20px;
  font-size: 0.92rem;
  color: #9FB3D1;
  line-height: 1.75;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #05070D;
  border-top: 1px solid var(--border-line);
  padding-top: 64px;
  padding-bottom: 32px;
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer-brand .logo {
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 320px;
  line-height: 1.7;
}

.footer-nav h4,
.footer-info h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-title);
}

.footer-nav a {
  display: block;
  padding: 5px 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

.footer-info p {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 4px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-info p::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}

.footer-copy {
  border-top: 1px solid var(--border-line);
  padding-top: 24px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-copy a {
  color: var(--text-muted);
}

/* ===== 焦点可访问性 ===== */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  .site-header {
    height: 64px;
  }

  .header-inner {
    height: 64px;
  }

  .main-nav {
    display: none;
  }

  .btn-header {
    display: none;
  }

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

  .mobile-tabbar {
    display: block;
  }

  .mobile-drop.show {
    display: flex;
  }

  .hero {
    padding: 56px 0 90px;
  }

  .hero-inner {
    flex-direction: column;
    gap: 48px;
  }

  .hero-copy {
    flex: none;
    width: 100%;
  }

  .hero-phone {
    flex: none;
    width: 100%;
  }

  .phone-frame {
    width: clamp(220px, 60vw, 320px);
  }

  .section {
    padding: 72px 0;
  }

  .hot-grid {
    grid-template-columns: repeat(4, minmax(260px, 1fr));
    grid-auto-flow: column;
    grid-auto-columns: minmax(72vw, 260px);
  }

  .hot-card {
    min-width: 260px;
  }

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

  .rating-panel {
    flex-direction: row;
    gap: 16px;
    padding: 20px;
  }

  .rating-stars {
    margin: 0;
  }

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

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

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

  body {
    padding-bottom: 62px;
  }
}

@media (max-width: 540px) {
  .site-header {
    height: 58px;
  }

  .header-inner {
    height: 58px;
  }

  .logo-badge {
    width: 32px;
    height: 32px;
    font-size: 0.75rem;
    border-radius: 8px;
  }

  .logo-text {
    font-size: 1rem;
  }

  .hero {
    padding: 40px 0 72px;
  }

  .hero h1 {
    font-size: 1.9rem;
  }

  .hero-sub {
    font-size: 1rem;
  }

  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }

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

  .hero-stats {
    flex-wrap: wrap;
    gap: 10px;
  }

  .section {
    padding: 56px 0;
  }

  .section-head {
    margin-bottom: 24px;
  }

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

  .pick-card {
    padding: 20px 16px;
  }

  .pick-num {
    font-size: 2.4rem;
    min-width: 40px;
  }

  .btn-pick {
    height: 30px;
    padding: 0 12px;
    font-size: 0.8rem;
  }

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

  .review-card {
    flex-basis: 80vw;
  }

  .faq-q {
    padding: 16px 18px;
  }

  .faq-a {
    padding: 0 18px 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    text-align: center;
  }

  .footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .footer-brand p {
    text-align: center;
  }

  .footer-nav a {
    display: inline-block;
    margin: 0 8px;
  }

  .footer-nav h4,
  .footer-info h4 {
    text-align: center;
  }

  .footer-info p {
    justify-content: center;
  }

  .cta-section {
    padding: 64px 0;
  }

  .btn-glow::after {
    display: none;
  }

  .cta-trust {
    flex-direction: column;
    gap: 6px;
  }

  .cta-trust span + span::before {
    content: "";
    margin: 0;
  }

  .hero-phone {
    order: -1;
  }
}

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

  .mobile-drop {
    display: none !important;
  }
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root {
  --primary: #00A8FF;
  --secondary: #7B5CFF;
  --accent: #00E5A0;
  --alert: #FF8A3D;
  --bg-base: #060910;
  --bg-raised: #0B1120;
  --glass-bg: rgba(15, 23, 42, 0.60);
  --glass-border: rgba(140, 180, 255, 0.10);
  --divider: rgba(140, 180, 255, 0.06);
  --text-title: #EAF2FF;
  --text-body: #B6C6DC;
  --text-muted: #7A8DA6;
  --text-disabled: #3D4C63;
  --radius-card: 16px;
  --radius-inner: 12px;
  --radius-btn: 10px;
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.28);
  --shadow-glass: 0 16px 48px rgba(2, 6, 20, 0.45);
  --shadow-glow: 0 0 24px rgba(0, 168, 255, 0.35), 0 4px 12px rgba(123, 92, 255, 0.22);
}

/* ============ Reset / Base ============ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg-base);
  color: var(--text-body);
  line-height: 1.8;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--text-title);
}
button {
  font-family: inherit;
  cursor: pointer;
}
input, textarea {
  font-family: inherit;
}
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: clamp(20px, 4vw, 48px);
  padding-right: clamp(20px, 4vw, 48px);
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  border: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(0, 168, 255, 0.45), 0 6px 16px rgba(123, 92, 255, 0.3);
  color: #fff;
}
.btn-primary:active {
  transform: translateY(1px);
}
.btn-ghost {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid rgba(140, 180, 255, 0.25);
  color: var(--text-body);
}
.btn-ghost:hover {
  border-color: rgba(0, 168, 255, 0.5);
  color: var(--text-title);
  background: rgba(15, 23, 42, 0.8);
}
.btn-lg {
  height: 54px;
  padding: 0 36px;
  font-size: 17px;
  font-weight: 700;
  border-radius: 12px;
}
.btn-header {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
  border-radius: 10px;
}

/* ============ 顶部导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 9, 16, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--divider);
}
.header-inner {
  display: flex;
  align-items: center;
  height: 72px;
  max-width: 1280px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}
.logo-badge {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 14px;
  box-shadow: 0 0 16px rgba(0, 168, 255, 0.3);
}
.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-title);
  letter-spacing: 0.01em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 40px;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  color: var(--text-body);
  font-size: 15px;
  border-radius: 8px;
  position: relative;
  text-decoration: none;
  transition: color 0.18s ease, background 0.18s ease;
}
.nav-link:hover {
  color: var(--text-title);
  background: rgba(140, 180, 255, 0.06);
}
.nav-link.active {
  color: #fff;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 2px;
  transform: translateX(-50%);
  width: 22px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0, 168, 255, 0.6);
}
.nav-toggle {
  display: none;
  margin-left: auto;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid rgba(140, 180, 255, 0.2);
  border-radius: 10px;
  position: relative;
  cursor: pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 2px;
  background: var(--text-title);
  border-radius: 2px;
  transition: all 0.2s ease;
}
.nav-toggle span {
  top: 50%;
  transform: translate(-50%, -50%);
}
.nav-toggle span::before {
  top: -6px;
}
.nav-toggle span::after {
  top: 6px;
}
.nav-toggle.open span {
  background: transparent;
}
.nav-toggle.open span::before {
  top: 0;
  transform: translateX(-50%) rotate(45deg);
}
.nav-toggle.open span::after {
  top: 0;
  transform: translateX(-50%) rotate(-45deg);
}

/* ============ 移动端底部 Tab ============ */
.mobile-tab {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  height: calc(62px + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  background: rgba(8, 12, 22, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-top: 1px solid var(--divider);
  justify-content: space-around;
  align-items: center;
}
.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex: 1;
  height: 100%;
  color: var(--text-muted);
  font-size: 11px;
  text-decoration: none;
  transition: color 0.18s ease;
  position: relative;
}
.tab-item i {
  font-size: 18px;
}
.tab-item.active {
  color: var(--primary);
}
.tab-item.active::before {
  content: '';
  position: absolute;
  top: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(0, 168, 255, 0.8);
}
.tab-item.active {
  background: rgba(0, 168, 255, 0.12);
  border-radius: 20px;
}

/* ============ 页面 Hero ============ */
.page-hero {
  position: relative;
  padding: 100px 0 80px;
  background:
    radial-gradient(circle at 20% 20%, rgba(0, 168, 255, 0.10), transparent 60%),
    radial-gradient(circle at 80% 80%, rgba(123, 92, 255, 0.08), transparent 60%),
    linear-gradient(180deg, rgba(6, 9, 16, 0.90), rgba(6, 9, 16, 0.98)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-bottom: 1px solid var(--divider);
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.page-hero::after {
  content: '';
  position: absolute;
  right: -120px;
  top: -120px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.10;
  filter: blur(90px);
  pointer-events: none;
}
.hero-wrap {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 60px;
}
.hero-main {
  flex: 1.2;
}
.hero-aside {
  flex: 0.8;
  display: flex;
  justify-content: flex-end;
}
.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 16px;
  padding: 6px 14px;
  border: 1px solid rgba(0, 168, 255, 0.3);
  border-radius: 999px;
  background: rgba(0, 168, 255, 0.08);
}
.page-hero h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.2rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-title);
  letter-spacing: 0.01em;
  margin-bottom: 20px;
}
.page-hero h1 .grad {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero-desc {
  font-size: 1.15rem;
  line-height: 1.7;
  color: #9FB3D1;
  margin-bottom: 32px;
  max-width: 480px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-note {
  max-width: 320px;
  background: var(--glass-bg);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 28px 26px;
  position: relative;
  overflow: hidden;
}
.hero-note::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 30px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent);
  pointer-events: none;
}
.hero-note .note-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-size: 18px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-glow);
}
.hero-note p {
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.7;
}

/* ============ 通用 Section ============ */
section {
  padding: 96px 0;
}
.section-head {
  margin-bottom: 40px;
}
.section-head .eyebrow {
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.25;
  margin-bottom: 12px;
}
.section-head p {
  color: var(--text-muted);
  max-width: 560px;
  font-size: 0.95rem;
}

/* ============ 推荐卡片网格 ============ */
.rec-section {
  background: var(--bg-base);
}
.rec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.rec-card {
  display: flex;
  background: var(--glass-bg);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-radius: var(--radius-card);
  border: 1px solid var(--glass-border);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  position: relative;
}
.rec-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 30px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent);
  pointer-events: none;
  z-index: 1;
}
.rec-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glass), 0 0 24px rgba(0, 168, 255, 0.12);
  border-color: rgba(0, 168, 255, 0.35);
}
.rec-media {
  flex: 0 0 180px;
  min-height: 150px;
  position: relative;
  overflow: hidden;
}
.rec-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.rec-card:hover .rec-media img {
  transform: scale(1.03);
}
.rec-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
  background: var(--alert);
  box-shadow: 0 2px 10px rgba(255, 138, 61, 0.35);
  letter-spacing: 0.02em;
}
.rec-badge.new {
  background: var(--accent);
  color: #061015;
}
.rec-body {
  flex: 1;
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
}
.rec-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.rec-cat {
  color: var(--primary);
  font-weight: 600;
}
.rec-time {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.rec-time i {
  font-size: 12px;
}
.rec-body h3 {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
}
.rec-body h3 a {
  color: var(--text-title);
  text-decoration: none;
  transition: color 0.2s ease;
}
.rec-body h3 a:hover {
  color: var(--primary);
}
.rec-body p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.rec-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.rec-arrow {
  color: var(--primary);
  font-size: 14px;
  transition: transform 0.2s ease;
}
.rec-card:hover .rec-arrow {
  transform: translateX(4px);
}

/* ============ 分页器 ============ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 48px;
}
.page-num,
.page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 10px;
  border-radius: 10px;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--glass-border);
  color: var(--text-body);
  font-size: 14px;
  text-decoration: none;
  transition: all 0.2s ease;
}
.page-num:hover,
.page-btn:hover {
  border-color: rgba(0, 168, 255, 0.4);
  color: var(--text-title);
  background: rgba(15, 23, 42, 0.8);
}
.page-num.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-glow);
  font-weight: 600;
}
.page-btn:disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* ============ 特色区 ============ */
.features {
  background: var(--bg-raised);
  border-top: 1px solid var(--divider);
  border-bottom: 1px solid var(--divider);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0.7;
}
.feature-card:hover {
  border-color: rgba(0, 168, 255, 0.3);
  transform: translateY(-3px);
}
.feature-num {
  font-size: 2.4rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.10);
  display: block;
  margin-bottom: 10px;
  line-height: 1;
}
.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============ 场景区 ============ */
.scenarios {
  background: var(--bg-base);
}
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.scenario-card {
  background: linear-gradient(180deg, rgba(11, 17, 32, 0.9), rgba(6, 9, 16, 0.95));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  position: relative;
  transition: border-color 0.3s ease;
}
.scenario-card:hover {
  border-color: rgba(0, 168, 255, 0.3);
}
.scenario-card .icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(0, 168, 255, 0.12);
  color: var(--primary);
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.scenario-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 10px;
}
.scenario-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ============ 流程区 ============ */
.process {
  background: var(--bg-raised);
  border-top: 1px solid var(--divider);
  border-bottom: 1px solid var(--divider);
}
.process-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}
.process-list::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 12%;
  right: 12%;
  height: 1px;
  background: linear-gradient(90deg, rgba(0, 168, 255, 0.2), rgba(123, 92, 255, 0.2), rgba(0, 168, 255, 0.2));
  z-index: 0;
}
.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  box-shadow: var(--shadow-glow);
  margin-bottom: 20px;
}
.process-step h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 10px;
}
.process-step p {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 270px;
  margin: 0 auto;
  line-height: 1.75;
}

/* ============ FAQ ============ */
.faq {
  background: var(--bg-base);
}
.faq-list {
  max-width: 800px;
}
.faq-item {
  background: var(--glass-bg);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.3s ease;
}
.faq-item:hover {
  border-color: rgba(0, 168, 255, 0.25);
}
.faq-item[open] {
  border-color: rgba(0, 168, 255, 0.4);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-title);
  cursor: pointer;
  list-style: none;
  user-select: none;
  position: relative;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: '+';
  font-size: 24px;
  font-weight: 300;
  color: var(--primary);
  transition: transform 0.25s ease;
  line-height: 1;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-item .faq-answer {
  padding: 0 24px 20px;
  color: #9FB3D1;
  font-size: 0.95rem;
  line-height: 1.75;
  border-top: 1px solid var(--divider);
  margin-top: 0;
}
.faq-item .faq-answer p {
  padding-top: 14px;
}

/* ============ CTA ============ */
.cta-section {
  background: radial-gradient(circle at 50% 50%, #0B1120, #060910 75%);
  border-top: 1px solid var(--divider);
  text-align: center;
  padding: 96px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 300px;
  height: 300px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.05;
  filter: blur(90px);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 1;
}
.cta-inner h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 16px;
}
.cta-inner p {
  color: var(--text-muted);
  margin-bottom: 32px;
}
.btn-pulse {
  position: relative;
}
.btn-pulse::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 16px;
  border: 2px solid rgba(0, 168, 255, 0.3);
  animation: pulse 3s infinite;
  pointer-events: none;
}
@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.06); opacity: 0.5; }
  100% { transform: scale(1.12); opacity: 0; }
}
.cta-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 24px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.cta-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.cta-meta i {
  color: var(--primary);
}
.cta-meta .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-disabled);
}

/* ============ 页脚 ============ */
.site-footer {
  background: #05070D;
  border-top: 1px solid var(--divider);
  padding-top: 56px;
  padding-bottom: 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand .logo {
  margin-bottom: 16px;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 320px;
  line-height: 1.7;
}
.footer-nav h4,
.footer-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 16px;
}
.footer-nav a {
  display: block;
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 6px 0;
  text-decoration: none;
  transition: color 0.2s ease;
}
.footer-nav a:hover {
  color: var(--primary);
}
.footer-info p {
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 6px 0;
  line-height: 1.6;
}
.footer-copy {
  border-top: 1px solid var(--divider);
  padding-top: 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}
.footer-copy a {
  color: var(--text-muted);
  text-decoration: none;
}
.footer-copy a:hover {
  color: var(--primary);
}

/* ============ 响应式 ============ */
@media (max-width: 1023px) {
  .main-nav {
    display: none;
  }
  .btn-header {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
  .mobile-tab {
    display: flex;
  }
  body {
    padding-bottom: 62px;
  }
  .hero-wrap {
    flex-direction: column;
    gap: 40px;
  }
  .hero-aside {
    justify-content: flex-start;
    width: 100%;
  }
  .hero-note {
    max-width: 100%;
  }
  .rec-grid {
    grid-template-columns: 1fr;
  }
  .feature-grid,
  .scenario-grid,
  .process-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .process-list::before {
    display: none;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 540px) {
  section {
    padding: 60px 0;
  }
  .page-hero {
    padding: 64px 0 48px;
  }
  .page-hero h1 {
    font-size: 2rem;
  }
  .hero-desc {
    font-size: 1rem;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .rec-card {
    flex-direction: row;
  }
  .rec-media {
    flex: 0 0 110px;
    min-height: 120px;
  }
  .rec-body {
    padding: 12px 14px;
  }
  .rec-body h3 {
    font-size: 1rem;
  }
  .rec-body p {
    -webkit-line-clamp: 2;
    font-size: 0.82rem;
  }
  .rec-badge {
    top: 8px;
    left: 8px;
    font-size: 10px;
    padding: 3px 8px;
  }
  .rec-cat {
    font-size: 0.75rem;
  }
  .rec-time {
    font-size: 0.75rem;
  }
  .feature-card,
  .scenario-card {
    padding: 22px 18px;
  }
  .cta-inner .btn-lg {
    width: 100%;
    padding: 0 20px;
  }
  .cta-meta {
    flex-direction: column;
    gap: 8px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-brand {
    text-align: center;
  }
  .footer-brand .logo {
    justify-content: center;
  }
  .footer-brand p {
    margin: 0 auto;
  }
  .footer-nav,
  .footer-info {
    text-align: center;
  }
  .pagination {
    flex-wrap: wrap;
  }
}

/* roulang page: article */
:root {
  --primary: #00A8FF;
  --secondary: #7B5CFF;
  --accent: #00E5A0;
  --alert: #FF8A3D;
  --primary-grad: linear-gradient(135deg, #00A8FF, #7B5CFF);
  --bg-base: #060910;
  --bg-raised: #0B1120;
  --glass-bg: rgba(15, 23, 42, 0.55);
  --glass-border: rgba(140, 180, 255, 0.10);
  --divider: rgba(140, 180, 255, 0.06);
  --glow-border: rgba(0, 168, 255, 0.45);
  --text-title: #EAF2FF;
  --text-body: #B6C6DC;
  --text-muted: #7A8DA6;
  --text-white: #FFFFFF;
  --text-disabled: #3D4C63;
  --text-placeholder: #4E607B;
  --radius-card: 16px;
  --radius-inner: 12px;
  --radius-btn: 10px;
  --radius-pill: 999px;
  --shadow-base: 0 8px 30px rgba(0, 0, 0, 0.28);
  --shadow-glass: 0 16px 48px rgba(2, 6, 20, 0.45);
  --shadow-glow: 0 0 24px rgba(0, 168, 255, 0.35), 0 4px 12px rgba(123, 92, 255, 0.22);
  --font-stack: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  background: var(--bg-base);
  color: var(--text-body);
  line-height: 1.8;
  min-height: 100vh;
  background-image: radial-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  -webkit-font-smoothing: antialiased;
}

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

ul, ol {
  list-style: none;
}

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

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

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
}

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--primary-grad);
  border-radius: 0 3px 3px 0;
  box-shadow: 0 0 12px rgba(0, 168, 255, 0.5);
  z-index: 1000;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 9, 16, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--divider);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  position: relative;
}

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

.logo-badge {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--primary-grad);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  color: var(--text-white);
  box-shadow: var(--shadow-glow);
  letter-spacing: 0.02em;
}

.logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-title);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  position: relative;
  padding: 10px 16px;
  font-size: 0.92rem;
  color: var(--text-body);
  border-radius: 8px;
  transition: color 0.18s, background 0.18s;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--text-title);
  background: rgba(140, 180, 255, 0.06);
}

.nav-link.active {
  color: var(--text-white);
  font-weight: 600;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 4px;
  height: 2px;
  background: var(--primary-grad);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0, 168, 255, 0.6);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s, box-shadow 0.18s, background 0.18s, border-color 0.18s, filter 0.18s;
  font-family: inherit;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary-grad);
  color: var(--text-white);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
  box-shadow: 0 0 30px rgba(0, 168, 255, 0.5), 0 6px 18px rgba(123, 92, 255, 0.3);
}

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

.btn-ghost {
  background: rgba(10, 16, 30, 0.5);
  border-color: rgba(140, 180, 255, 0.25);
  color: var(--text-body);
}

.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--text-title);
  background: rgba(0, 168, 255, 0.08);
  transform: translateY(-2px);
}

.btn-header {
  height: 40px;
  padding: 0 20px;
  font-size: 0.85rem;
}

.btn-glow {
  position: relative;
  overflow: hidden;
}

.btn-glow::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  box-shadow: 0 0 24px rgba(0, 168, 255, 0.35), 0 4px 12px rgba(123, 92, 255, 0.22);
  animation: pulse-glow 3s infinite;
  pointer-events: none;
  z-index: -1;
}

@keyframes pulse-glow {
  0%, 100% {
    opacity: 0.7;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.03);
  }
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  background: rgba(10, 16, 30, 0.5);
  position: relative;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 2px;
  background: var(--text-body);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle span {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.nav-toggle span::before {
  top: -6px;
  left: 0;
}

.nav-toggle span::after {
  top: 6px;
  left: 0;
}

.nav-toggle.open span {
  background: transparent;
}

.nav-toggle.open span::before {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle.open span::after {
  transform: translateY(-6px) rotate(-45deg);
}

/* ===== 移动端底部 Tab ===== */
.mobile-tabs {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 120;
  height: calc(62px + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  background: rgba(6, 9, 16, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-top: 1px solid var(--divider);
}

.tab-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  color: var(--text-muted);
  font-size: 0.68rem;
  line-height: 1;
  transition: color 0.2s;
  -webkit-tap-highlight-color: transparent;
}

.tab-item .tab-icon {
  width: 22px;
  height: 22px;
}

.tab-item.active {
  color: var(--primary);
}

.tab-item.active .tab-icon {
  filter: drop-shadow(0 0 6px rgba(0, 168, 255, 0.8));
}

/* ===== 文章头部 ===== */
.article-main {
  padding-bottom: 80px;
}

.article-head {
  position: relative;
  padding: 72px 0 40px;
  background: linear-gradient(180deg, rgba(11, 17, 32, 0.75), rgba(6, 9, 16, 0.25)),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  border-bottom: 1px solid var(--divider);
  overflow: hidden;
}

.article-head::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 9, 16, 0.55), rgba(6, 9, 16, 0.92));
  pointer-events: none;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
}

.glow-orb-a {
  width: 320px;
  height: 320px;
  background: var(--primary);
  opacity: 0.12;
  top: -60px;
  right: -80px;
}

.glow-orb-b {
  width: 280px;
  height: 280px;
  background: var(--secondary);
  opacity: 0.10;
  bottom: -80px;
  left: -60px;
}

.article-container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: var(--text-muted);
  transition: color 0.2s;
}

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

.breadcrumb .sep {
  color: var(--text-disabled);
}

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

.article-cat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  background: rgba(0, 168, 255, 0.1);
  border: 1px solid rgba(0, 168, 255, 0.3);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 16px;
  transition: background 0.2s, border-color 0.2s;
}

.article-cat:hover {
  background: rgba(0, 168, 255, 0.2);
  border-color: var(--primary);
}

.article-title {
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-title);
  letter-spacing: 0.01em;
  margin-bottom: 16px;
  max-width: 720px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.meta-item svg {
  width: 16px;
  height: 16px;
  color: var(--primary);
  flex-shrink: 0;
}

/* ===== 文章封面 ===== */
.article-cover {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  margin: 40px 0 32px;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-base);
}

.article-cover img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.article-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(6, 9, 16, 0.4));
  pointer-events: none;
}

.article-cover-placeholder {
  height: 380px;
  background: linear-gradient(135deg, var(--bg-raised), var(--bg-base));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  margin: 40px 0 32px;
}

.article-cover-placeholder::before {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.08;
  filter: blur(80px);
}

.article-cover-placeholder::after {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: var(--secondary);
  opacity: 0.08;
  filter: blur(60px);
  right: 10%;
}

.cover-placeholder-text {
  position: relative;
  z-index: 1;
  font-size: 0.9rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  padding: 10px 24px;
  border: 1px solid var(--glass-border);
  border-radius: 40px;
  background: rgba(6, 9, 16, 0.5);
}

/* ===== 文章正文排版 ===== */
.article-content {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--text-body);
  word-break: break-word;
}

.article-content h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-title);
  margin: 2.2em 0 1em;
  padding-bottom: 0.5em;
  border-bottom: 1px solid var(--divider);
  line-height: 1.4;
}

.article-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-title);
  margin: 2em 0 0.8em;
  line-height: 1.4;
}

.article-content p {
  margin: 0 0 1.5em;
  line-height: 1.9;
}

.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color 0.2s;
}

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

.article-content blockquote {
  border-left: 3px solid var(--primary);
  background: rgba(123, 92, 255, 0.06);
  padding: 16px 20px;
  color: #9FB3D1;
  border-radius: 0 12px 12px 0;
  margin: 1.5em 0;
  font-size: 0.95rem;
}

.article-content ul,
.article-content ol {
  margin: 1em 0 1.5em;
  padding-left: 1.5em;
}

.article-content ul li {
  position: relative;
  padding-left: 0.5em;
  margin-bottom: 0.5em;
}

.article-content ul li::before {
  content: "";
  position: absolute;
  left: -0.8em;
  top: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}

.article-content ol {
  list-style: decimal;
}

.article-content ol li {
  margin-bottom: 0.5em;
}

.article-content code {
  background: rgba(8, 12, 22, 0.85);
  color: var(--text-title);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: "SF Mono", "Cascadia Code", Consolas, monospace;
}

.article-content pre {
  background: rgba(8, 12, 22, 0.85);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 20px;
  overflow-x: auto;
  margin: 1.5em 0;
}

.article-content pre code {
  background: transparent;
  padding: 0;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(140, 180, 255, 0.08);
  font-size: 0.92rem;
}

.article-content th {
  background: rgba(10, 16, 30, 0.8);
  color: var(--text-title);
  font-weight: 600;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(140, 180, 255, 0.1);
}

.article-content td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(140, 180, 255, 0.06);
  color: var(--text-body);
}

.article-content img {
  max-width: 100%;
  border-radius: 12px;
  margin: 0.5em 0;
}

/* ===== 标签 / 分享 ===== */
.article-share {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0;
  border-top: 1px solid var(--divider);
  border-bottom: 1px solid var(--divider);
  margin: 40px 0 0;
}

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

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: rgba(10, 16, 30, 0.5);
  border: 1px solid rgba(140, 180, 255, 0.15);
  font-size: 0.78rem;
  color: var(--text-muted);
  transition: border-color 0.2s, color 0.2s;
}

.tag-chip:hover {
  border-color: var(--primary);
  color: var(--text-title);
}

.share-actions {
  display: flex;
  gap: 8px;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--glass-border);
  background: rgba(10, 16, 30, 0.5);
  color: var(--text-muted);
  font-size: 0.82rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.share-btn svg {
  width: 16px;
  height: 16px;
}

.share-btn:hover {
  color: var(--text-title);
  border-color: var(--primary);
  background: rgba(0, 168, 255, 0.08);
}

/* ===== 空状态 ===== */
.article-empty-section {
  padding: 80px 0 40px;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-empty {
  text-align: center;
  padding: 40px 24px;
}

.empty-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

.empty-icon svg {
  width: 28px;
  height: 28px;
}

.article-empty h1 {
  color: var(--text-title);
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.article-empty p {
  color: var(--text-muted);
  max-width: 400px;
  margin: 0 auto 24px;
}

/* ===== 相关推荐 ===== */
.related-section {
  padding: 72px 0 48px;
  background: linear-gradient(180deg, transparent, rgba(11, 17, 32, 0.4), transparent);
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 32px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  font-weight: 600;
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--primary-grad);
  border-radius: 2px;
}

.section-head h2 {
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.25;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-card {
  display: flex;
  flex-direction: column;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  text-decoration: none;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  box-shadow: var(--shadow-base);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  position: relative;
}

.related-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 30px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent);
  border-radius: inherit;
  pointer-events: none;
  z-index: 2;
}

.related-card:hover {
  transform: translateY(-6px);
  border-color: var(--glow-border);
  box-shadow: var(--shadow-glass);
}

.card-thumb {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.related-card:hover .card-thumb img {
  transform: scale(1.03);
}

.card-label {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--alert);
  color: var(--text-white);
  font-size: 0.75rem;
  font-weight: 600;
  z-index: 2;
  box-shadow: 0 4px 12px rgba(255, 138, 61, 0.3);
}

.card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.card-body h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-title);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
  transition: color 0.2s;
}

.related-card:hover .card-body h3 {
  color: var(--primary);
}

.card-excerpt {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
  flex: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
}

/* ===== 返回列表 ===== */
.back-nav {
  text-align: center;
  padding: 16px 0 0;
}

/* ===== 文章 CTA ===== */
.article-cta {
  position: relative;
  padding: 72px 0;
  background: radial-gradient(ellipse at center, var(--bg-raised), var(--bg-base));
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 48px;
  border-radius: 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  position: relative;
  overflow: hidden;
}

.cta-inner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 30px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent);
  border-radius: inherit;
  pointer-events: none;
}

.cta-info h3 {
  color: var(--text-title);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
}

.cta-info p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.cta-actions {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #05070D;
  border-top: 1px solid var(--divider);
  padding: 56px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 320px;
  line-height: 1.6;
}

.footer-nav,
.footer-info {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav h4,
.footer-info h4 {
  color: var(--text-title);
  font-size: 0.95rem;
  margin-bottom: 8px;
  font-weight: 600;
}

.footer-nav a {
  color: var(--text-muted);
  font-size: 0.88rem;
  transition: color 0.2s;
}

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

.footer-info p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

.footer-copy {
  border-top: 1px solid var(--divider);
  padding: 20px 0;
  text-align: center;
}

.footer-copy p {
  color: var(--text-disabled);
  font-size: 0.82rem;
}

.footer-copy a {
  color: var(--text-muted);
  transition: color 0.2s;
}

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

/* ===== 响应式 ===== */
@media (min-width: 541px) and (max-width: 1023px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1023px) {
  .site-header {
    position: sticky;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(6, 9, 16, 0.95);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--divider);
    padding: 8px 24px 20px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    z-index: 99;
  }

  .main-nav.open {
    display: flex;
  }

  .nav-link {
    padding: 12px 16px;
  }

  .nav-link.active::after {
    left: 16px;
    right: auto;
    width: 40px;
    bottom: auto;
  }

  .btn-header {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .mobile-tabs {
    display: flex;
  }

  .site-footer {
    padding-bottom: 80px;
  }

  .article-main {
    padding-bottom: 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }

  .footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .footer-brand p {
    margin: 12px auto 0;
  }

  .footer-nav,
  .footer-info {
    align-items: center;
  }

  .cta-inner {
    flex-direction: column;
    text-align: center;
    padding: 36px 28px;
  }

  .cta-actions {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }
}

@media (max-width: 767px) {
  .article-head {
    padding: 48px 0 32px;
  }

  .breadcrumb {
    font-size: 0.8rem;
    margin-bottom: 20px;
  }

  .breadcrumb .current {
    max-width: 180px;
  }

  .article-title {
    font-size: 1.5rem;
    line-height: 1.3;
  }

  .article-meta {
    gap: 10px 16px;
    font-size: 0.82rem;
  }

  .article-container {
    padding: 0 16px;
  }

  .article-cover {
    border-radius: 16px;
    margin: 32px 0 24px;
  }

  .article-cover img {
    aspect-ratio: 4 / 3;
  }

  .article-cover-placeholder {
    height: 260px;
    margin: 32px 0 24px;
  }

  .article-content {
    font-size: 0.96rem;
  }

  .article-content h2 {
    font-size: 1.25rem;
  }

  .article-content h3 {
    font-size: 1.08rem;
  }

  .article-share {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 20px 0;
    margin-top: 32px;
  }

  .share-actions {
    width: 100%;
  }

  .share-btn {
    flex: 1;
  }

  .related-section {
    padding: 56px 0 32px;
  }

  .related-grid {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 16px;
    margin: 0 -16px;
    padding: 0 16px 8px;
  }

  .related-grid::-webkit-scrollbar {
    display: none;
  }

  .related-card {
    min-width: 76vw;
    flex: 0 0 76vw;
    scroll-snap-align: start;
  }

  .back-nav {
    padding: 8px 0 0;
  }

  .back-nav .btn {
    width: 100%;
    max-width: 320px;
  }

  .article-cta {
    padding: 48px 0;
  }

  .cta-inner {
    padding: 32px 24px;
    gap: 20px;
  }

  .cta-info h3 {
    font-size: 1.15rem;
  }

  .cta-info p {
    font-size: 0.88rem;
  }

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

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

  .btn-glow::after {
    animation: none;
  }
}

@media (min-width: 1024px) {
  .article-main {
    padding-bottom: 0;
  }
}

/* roulang page: category2 */
:root {
  --primary:#00A8FF;
  --secondary:#7B5CFF;
  --accent:#00E5A0;
  --alert:#FF8A3D;
  --bg-main:#060910;
  --bg-raised:#0B1120;
  --glass:rgba(15,23,42,0.60);
  --glass-border:rgba(140,180,255,0.10);
  --text-title:#EAF2FF;
  --text-body:#B6C6DC;
  --text-muted:#7A8DA6;
  --text-dim:#4E607B;
  --radius-card:16px;
  --radius-sm:12px;
  --radius-btn:10px;
  --shadow-card:0 8px 30px rgba(0,0,0,0.28);
  --shadow-glass:0 16px 48px rgba(2,6,20,0.45);
  --glow-btn:0 0 24px rgba(0,168,255,0.35),0 4px 12px rgba(123,92,255,0.22);
  --container:1200px;
  --header-h:72px;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg-main);
  color:var(--text-body);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  padding-bottom:80px;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .18s}
a:hover{color:var(--text-title)}
button{font-family:inherit;cursor:pointer}
.container{max-width:var(--container);margin:0 auto;padding:0 clamp(20px,4vw,48px)}
.section{padding:96px 0;position:relative}
.section + .section{padding-top:0}
.section-eyebrow{
  font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--primary);font-weight:600;margin-bottom:10px;
}
.section-head{
  display:flex;justify-content:space-between;align-items:flex-end;
  gap:20px;margin-bottom:36px;flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(1.5rem,2.6vw,2.2rem);
  font-weight:700;line-height:1.25;color:var(--text-title);
  letter-spacing:.01em;
}
.section-head p{color:var(--text-muted);max-width:420px;font-size:.95rem;line-height:1.6}
h1,h2,h3,h4{font-family:inherit;color:var(--text-title)}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;height:var(--header-h);
  background:rgba(6,9,16,0.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(140,180,255,0.06);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.05rem}
.logo:hover{color:#fff}
.logo-badge{
  width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff;font-weight:800;font-size:.95rem;letter-spacing:.01em;
  box-shadow:0 0 18px rgba(0,168,255,0.28);
}
.logo-text{font-weight:700;color:#EAF2FF;font-size:1.06rem;letter-spacing:.02em}
.main-nav{display:flex;align-items:center;gap:6px}
.nav-link{
  padding:8px 16px;border-radius:8px;color:var(--text-muted);
  font-size:.95rem;position:relative;transition:color .18s;
}
.nav-link:hover{color:#EAF2FF}
.nav-link.active{color:#fff;font-weight:600}
.nav-link.active::after{
  content:'';position:absolute;left:16px;right:16px;bottom:-2px;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  border-radius:2px;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;border:none;border-radius:var(--radius-btn);
  transition:all .2s;text-decoration:none;line-height:1;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff;font-weight:700;
  box-shadow:var(--glow-btn);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 32px rgba(0,168,255,0.45),0 6px 16px rgba(123,92,255,0.28);
  color:#fff;
}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:transparent;color:var(--text-title);border:1px solid rgba(140,180,255,0.22);
}
.btn-ghost:hover{border-color:var(--primary);color:#fff;background:rgba(0,168,255,0.06)}
.btn-header{height:42px;padding:0 22px;font-size:.92rem}
.btn-lg{height:54px;padding:0 36px;font-size:1.05rem}
.nav-toggle{display:none;background:none;border:none;width:44px;height:44px;position:relative}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:'';position:absolute;left:10px;right:10px;height:2px;background:#EAF2FF;
  border-radius:2px;transition:all .25s;
}
.nav-toggle span{top:22px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.active span{background:transparent}
.nav-toggle.active span::before{top:0;transform:rotate(45deg)}
.nav-toggle.active span::after{top:0;transform:rotate(-45deg)}

/* ===== Hero ===== */
.c2-hero{
  position:relative;overflow:hidden;
  padding:96px 0 80px;min-height:520px;
  border-bottom:1px solid rgba(140,180,255,0.06);
}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.15;z-index:0;
}
.hero-glow{position:absolute;border-radius:50%;filter:blur(90px);z-index:0}
.hero-glow-blue{width:320px;height:320px;background:#00A8FF;opacity:.12;top:-40px;right:10%}
.hero-glow-purple{width:280px;height:280px;background:#7B5CFF;opacity:.10;bottom:-80px;left:15%}
.hero-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:55% 45%;gap:48px;align-items:center;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8rem;letter-spacing:.12em;color:var(--accent);
  background:rgba(0,229,160,0.08);border:1px solid rgba(0,229,160,0.18);
  padding:6px 14px;border-radius:999px;margin-bottom:20px;font-weight:600;
}
.hero-eyebrow::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px rgba(0,229,160,0.5)}
.c2-hero h1{
  font-size:clamp(2.1rem,4.6vw,3.4rem);
  font-weight:700;line-height:1.15;letter-spacing:.01em;
  color:var(--text-title);margin-bottom:20px;
}
.c2-hero h1 .gradient{
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  font-size:1.15rem;line-height:1.7;color:#9FB3D1;max-width:520px;margin-bottom:32px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:36px}
.hero-stats{
  display:flex;align-items:center;gap:20px;flex-wrap:wrap;
  font-size:.88rem;color:var(--text-muted);
}
.hero-stats strong{
  color:var(--primary);font-weight:700;font-size:1.05rem;
  font-feature-settings:"tnum";
}
.hero-stats i{width:1px;height:14px;background:rgba(140,180,255,0.16)}
.phone-frame{
  position:relative;width:clamp(220px,26vw,300px);
  aspect-ratio:9/16;border-radius:22px;margin-left:auto;margin-right:2rem;
  box-shadow:var(--shadow-glass);overflow:visible;
}
.phone-frame::before{
  content:'';position:absolute;inset:-12px;border-radius:32px;
  background:linear-gradient(135deg,rgba(0,168,255,0.2),rgba(123,92,255,0.12),transparent);
  z-index:-1;filter:blur(18px);
}
.phone-cover{
  width:100%;height:100%;border-radius:22px;overflow:hidden;position:relative;
  background:#fff;border:1px solid var(--glass-border);
}
.phone-cover img{width:100%;height:100%;object-fit:cover}
.phone-overlay{
  position:absolute;left:0;right:0;bottom:0;padding:20px 16px;
  background:linear-gradient(180deg,transparent,rgba(6,9,16,0.9));
}
.phone-tag{
  display:inline-block;font-size:.72rem;color:var(--accent);
  background:rgba(0,229,160,0.14);border:1px solid rgba(0,229,160,0.2);
  padding:3px 10px;border-radius:999px;margin-bottom:8px;
}
.phone-title{color:#fff;font-weight:600;font-size:1.05rem;line-height:1.4}
.phone-card-next{
  position:absolute;left:8%;right:8%;bottom:-14%;height:55%;
  border-radius:22px;background:linear-gradient(145deg,#0E1730,#0A101F);
  border:1px solid var(--glass-border);z-index:-1;
  box-shadow:0 16px 40px rgba(0,0,0,0.35);
}
.phone-frame::after{
  content:'';position:absolute;left:-28px;top:35%;width:48px;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);opacity:.5;
}

/* ===== 策略列表 ===== */
.strategy-section{background:var(--bg-raised)}
.filter-tabs{
  display:flex;gap:12px;flex-wrap:wrap;margin-bottom:36px;
}
.filter-tab{
  background:rgba(15,23,42,0.5);border:1px solid var(--glass-border);
  color:var(--text-muted);font-size:.9rem;padding:8px 22px;
  border-radius:999px;transition:all .2s;
}
.filter-tab:hover{color:var(--text-title);border-color:rgba(0,168,255,0.4)}
.filter-tab.active{
  color:#fff;background:linear-gradient(135deg,rgba(0,168,255,0.18),rgba(123,92,255,0.12));
  border-color:rgba(0,168,255,0.5);
}
.strategy-list{
  background:rgba(15,23,42,0.35);border:1px solid var(--glass-border);
  border-radius:var(--radius-card);overflow:hidden;
  backdrop-filter:blur(18px) saturate(150%);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  position:relative;
}
.strategy-list::before{
  content:'';position:absolute;top:0;left:0;right:0;height:30px;
  background:linear-gradient(180deg,rgba(255,255,255,0.04),transparent);
  pointer-events:none;z-index:1;
}
.strategy-row{
  display:grid;grid-template-columns:64px 1fr;gap:20px;
  padding:22px 24px;align-items:center;
  border-bottom:1px solid rgba(140,180,255,0.06);
  transition:background .2s;position:relative;
}
.strategy-row:last-child{border-bottom:none}
.strategy-row:hover{
  background:rgba(0,168,255,0.04);
}
.strategy-row img{
  width:64px;height:64px;border-radius:var(--radius-sm);object-fit:cover;
  border:1px solid var(--glass-border);transition:transform .3s,box-shadow .3s;
}
.strategy-row:hover img{
  transform:scale(1.03);
  box-shadow:0 0 0 2px rgba(0,168,255,0.3);
}
.row-body h3{
  font-size:1.05rem;font-weight:600;line-height:1.45;color:var(--text-title);
  margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.row-body p{
  font-size:.9rem;color:var(--text-muted);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:8px;
}
.row-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:.78rem;color:var(--text-dim)}
.row-meta .tag{
  display:inline-block;background:rgba(123,92,255,0.12);
  border:1px solid rgba(123,92,255,0.22);color:#B9A8FF;
  font-size:.72rem;padding:2px 10px;border-radius:999px;line-height:1.4;
}

/* ===== 卖点 ===== */
.points-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.point-card{
  background:rgba(15,23,42,0.55);border:1px solid var(--glass-border);
  border-radius:var(--radius-card);padding:32px 28px;position:relative;overflow:hidden;
  backdrop-filter:blur(18px) saturate(150%);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  transition:transform .25s,border-color .25s;
}
.point-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:30px;
  background:linear-gradient(180deg,rgba(255,255,255,0.05),transparent);
}
.point-card:hover{transform:translateY(-4px);border-color:rgba(0,168,255,0.3)}
.point-num{
  font-size:2.4rem;font-weight:800;color:rgba(255,255,255,0.08);
  position:absolute;top:12px;right:20px;letter-spacing:.02em;
  font-feature-settings:"tnum";
}
.point-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(0,168,255,0.16),rgba(123,92,255,0.16));
  border:1px solid rgba(0,168,255,0.2);margin-bottom:18px;
}
.point-icon svg{width:20px;height:20px;stroke:#00A8FF;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.point-card h3{font-size:1.05rem;font-weight:600;margin-bottom:10px;color:var(--text-title)}
.point-card p{font-size:.9rem;color:var(--text-muted);line-height:1.7}

/* ===== 流程 ===== */
.process-section{background:var(--bg-raised)}
.process-step{
  display:grid;grid-template-columns:56px 1fr;gap:24px;
  padding:32px 0;position:relative;
}
.process-step::before{
  content:'';position:absolute;left:28px;top:80px;bottom:-24px;width:1px;
  background:linear-gradient(180deg,rgba(0,168,255,0.3),rgba(140,180,255,0.05));
}
.process-step:last-child::before{display:none}
.step-num{
  width:56px;height:56px;border-radius:18px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff;font-weight:800;font-size:1.2rem;
  box-shadow:0 0 18px rgba(0,168,255,0.25);
  font-feature-settings:"tnum";
}
.step-body h3{font-size:1.1rem;font-weight:600;margin-bottom:8px}
.step-body p{color:var(--text-muted);font-size:.92rem;line-height:1.7;max-width:480px}

/* ===== FAQ ===== */
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:12px 24px}
.faq-item{
  background:rgba(15,23,42,0.5);border:1px solid var(--glass-border);
  border-radius:var(--radius-card);overflow:hidden;transition:border-color .25s;
}
.faq-item.open{border-color:rgba(0,168,255,0.4)}
.faq-q{
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:18px 24px;cursor:pointer;user-select:none;
  font-size:1rem;font-weight:600;color:var(--text-title);
}
.faq-q::after{
  content:'';width:12px;height:12px;flex-shrink:0;
  border-right:2px solid var(--text-muted);border-bottom:2px solid var(--text-muted);
  transform:rotate(45deg);transition:transform .25s;margin-top:-4px;
}
.faq-item.open .faq-q::after{transform:rotate(-135deg);margin-top:4px}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s;
  color:#9FB3D1;font-size:.92rem;line-height:1.75;padding:0 24px;
}
.faq-item.open .faq-a{max-height:400px;padding:0 24px 20px}

/* ===== CTA ===== */
.cta-section{
  position:relative;overflow:hidden;text-align:center;
  background:radial-gradient(ellipse at center,#0B1120,#060910);
  border-top:1px solid rgba(140,180,255,0.06);
}
.cta-section::before{
  content:'';position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:520px;height:520px;border-radius:50%;
  background:var(--primary);opacity:.07;filter:blur(100px);
}
.cta-inner{position:relative;z-index:2;max-width:600px;margin:0 auto}
.cta-inner h2{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700;margin-bottom:16px}
.cta-inner p{color:var(--text-muted);font-size:1rem;line-height:1.7;margin-bottom:36px}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-pulse{position:relative}
.btn-pulse::after{
  content:'';position:absolute;inset:0;border-radius:inherit;
  box-shadow:0 0 0 0 rgba(0,168,255,0.4);animation:pulse 3s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(0,168,255,0.4)}
  70%{box-shadow:0 0 0 18px rgba(0,168,255,0)}
  100%{box-shadow:0 0 0 0 rgba(0,168,255,0)}
}
.cta-trust{
  display:flex;align-items:center;justify-content:center;gap:14px;
  font-size:.82rem;color:var(--text-dim);margin-top:28px;flex-wrap:wrap;
}
.cta-trust i{width:1px;height:12px;background:rgba(140,180,255,0.14)}

/* ===== Footer ===== */
.site-footer{
  background:#05070D;border-top:1px solid rgba(140,180,255,0.06);
  padding:60px 0 24px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;margin-bottom:40px;
}
.footer-brand p{font-size:.9rem;color:var(--text-muted);margin-top:16px;line-height:1.7;max-width:280px}
.footer-nav h4,.footer-info h4{
  font-size:.9rem;font-weight:600;color:var(--text-title);margin-bottom:16px;
}
.footer-nav a{
  display:block;color:var(--text-muted);font-size:.9rem;padding:5px 0;transition:color .18s,padding-left .18s;
}
.footer-nav a:hover{color:var(--primary);padding-left:4px}
.footer-info p{color:var(--text-muted);font-size:.9rem;padding:5px 0}
.footer-copy{
  border-top:1px solid rgba(140,180,255,0.06);padding-top:24px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
}
.footer-copy p{font-size:.8rem;color:var(--text-dim)}
.footer-copy a{color:var(--text-dim)}
.footer-copy a:hover{color:var(--primary)}

/* ===== Mobile Tabbar ===== */
.mobile-tabbar{
  display:none;
  position:fixed;bottom:0;left:0;right:0;z-index:200;
  height:calc(62px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(8,12,22,0.88);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-top:1px solid rgba(140,180,255,0.08);
}
.tab-list{display:flex;height:100%;align-items:stretch}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  color:var(--text-muted);font-size:11px;text-decoration:none;transition:color .18s;position:relative;
}
.tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.tab-item.active{color:var(--primary);font-weight:600}
.tab-item.active::before{
  content:'';position:absolute;top:6px;width:4px;height:4px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 8px rgba(0,168,255,0.6);
}
.tab-item.active .tab-icon-wrap{
  background:rgba(0,168,255,0.12);padding:4px 16px;border-radius:20px;
}

/* ===== Back to top ===== */
.back-top{
  text-align:center;padding:48px 0 0;font-size:.9rem;
}
.back-top a{color:var(--text-muted)}
.back-top a:hover{color:var(--primary)}

/* ===== Responsive ===== */
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:block}
  .btn-header{display:none}
  .mobile-tabbar{display:block}
  .c2-hero{padding:72px 0 64px}
  .hero-inner{grid-template-columns:1fr;gap:48px}
  .phone-frame{margin:0 auto 32px;width:240px}
  .points-grid{grid-template-columns:1fr 1fr}
  .faq-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .section{padding:72px 0}
}
@media (max-width:540px){
  body{padding-bottom:calc(62px + env(safe-area-inset-bottom))}
  .section{padding:60px 0}
  .c2-hero{padding:48px 0;min-height:auto}
  .hero-actions .btn{flex:1}
  .hero-stats{gap:12px}
  .hero-stats strong{font-size:.95rem}
  .points-grid{grid-template-columns:1fr}
  .point-card{padding:24px 20px}
  .strategy-row{grid-template-columns:52px 1fr;gap:16px;padding:18px 16px}
  .strategy-row img{width:52px;height:52px}
  .row-body h3{font-size:.95rem}
  .row-body p{font-size:.84rem}
  .process-step{grid-template-columns:44px 1fr;gap:16px;padding:24px 0}
  .process-step::before{left:22px;top:70px;bottom:-18px}
  .step-num{width:44px;height:44px;font-size:1rem;border-radius:14px}
  .faq-q{padding:16px 18px}
  .faq-a{padding:0 18px}
  .faq-item.open .faq-a{padding:0 18px 16px}
  .cta-actions .btn{flex:1}
  .footer-grid{gap:24px}
  .cta-trust{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* roulang page: category3 */
:root {
  --primary: #00A8FF;
  --secondary: #7B5CFF;
  --accent: #00E5A0;
  --alert: #FF8A3D;
  --bg-page: #060910;
  --bg-section: #0B1120;
  --bg-glass: rgba(15, 23, 42, 0.60);
  --bg-deep: #05070D;
  --border-glass: rgba(140, 180, 255, 0.10);
  --border-line: rgba(140, 180, 255, 0.06);
  --border-glow: rgba(0, 168, 255, 0.45);
  --text-title: #EAF2FF;
  --text-body: #B6C6DC;
  --text-muted: #7A8DA6;
  --text-white: #FFFFFF;
  --radius-card: 16px;
  --radius-inner: 12px;
  --radius-btn: 10px;
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.28);
  --shadow-glass: 0 16px 48px rgba(2, 6, 20, 0.45);
  --shadow-glow: 0 0 24px rgba(0, 168, 255, 0.35), 0 4px 12px rgba(123, 92, 255, 0.22);
  --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --grad-primary: linear-gradient(135deg, #00A8FF, #7B5CFF);
  --grad-text: linear-gradient(90deg, #00A8FF, #7B5CFF);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-feature-settings: "tnum";
  background-color: var(--bg-page);
  background-image: radial-gradient(rgba(140, 180, 255, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--text-body);
  line-height: 1.8;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.18s ease;
}

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

button,
input {
  font-family: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid #00A8FF;
  outline-offset: 2px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
}

.header-inner {
  max-width: 1280px;
  display: flex;
  align-items: center;
  height: 72px;
  gap: 32px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 9, 16, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-line);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text-title);
  white-space: nowrap;
}

.logo-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--grad-primary);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: 0 0 18px rgba(0, 168, 255, 0.28);
}

.logo-text {
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav-link {
  position: relative;
  padding: 10px 16px;
  font-size: 0.95rem;
  color: var(--text-body);
  border-radius: 10px;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--text-title);
}

.nav-link.active {
  color: var(--text-white);
  font-weight: 600;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-primary);
  box-shadow: 0 0 12px rgba(0, 168, 255, 0.4);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  font-weight: 600;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(0, 168, 255, 0.5), 0 6px 16px rgba(123, 92, 255, 0.3);
}

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

.btn-ghost {
  background: rgba(15, 23, 42, 0.55);
  border: 1px solid rgba(140, 180, 255, 0.16);
  color: var(--text-body);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  border-color: rgba(0, 168, 255, 0.4);
  color: var(--text-title);
  transform: translateY(-1px);
}

.btn-header {
  height: 40px;
  padding: 0 20px;
  font-size: 0.9rem;
  margin-left: 8px;
}

.btn-lg {
  height: 54px;
  padding: 0 36px;
  font-size: 1.0625rem;
  font-weight: 700;
}

.btn-glow {
  position: relative;
  z-index: 1;
}

.btn-glow::before {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 14px;
  border: 2px solid rgba(0, 168, 255, 0.4);
  animation: pulse 3s infinite;
  z-index: -1;
}

@keyframes pulse {
  0% {
    opacity: 0.6;
    transform: scale(0.98);
  }
  50% {
    opacity: 1;
    transform: scale(1.04);
  }
  100% {
    opacity: 0.6;
    transform: scale(0.98);
  }
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-glass);
  border-radius: 10px;
  background: transparent;
  position: relative;
}

.nav-toggle span {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 18px;
  height: 2px;
  background: var(--text-title);
  transform: translate(-50%, -50%);
  transition: background 0.2s;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--text-title);
  transition: transform 0.2s;
}

.nav-toggle span::before {
  top: -6px;
}

.nav-toggle span::after {
  top: 6px;
}

.site-header.open .nav-toggle span {
  background: transparent;
}

.site-header.open .nav-toggle span::before {
  transform: translateY(6px) rotate(45deg);
}

.site-header.open .nav-toggle span::after {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-tabbar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(62px + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  background: rgba(6, 9, 16, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-top: 1px solid var(--border-glass);
  z-index: 110;
}

.tab-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 11px;
  color: var(--text-muted);
}

.tab-item svg {
  width: 22px;
  height: 22px;
  stroke-width: 1.8;
}

.tab-item.active {
  color: var(--primary);
  background: rgba(0, 168, 255, 0.08);
  border-radius: 20px;
  margin: 4px 8px;
}

.tab-item.active svg {
  filter: drop-shadow(0 0 8px rgba(0, 168, 255, 0.5));
}

.page-hero {
  position: relative;
  padding: 110px 0 80px;
  background:
    linear-gradient(180deg, rgba(6, 9, 16, 0.9) 0%, rgba(6, 9, 16, 0.96) 100%),
    url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  overflow: hidden;
  border-bottom: 1px solid var(--border-line);
}

.page-hero::before {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  right: 6%;
  top: 10%;
  border-radius: 50%;
  background: #00A8FF;
  opacity: 0.12;
  filter: blur(90px);
}

.page-hero::after {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  left: 4%;
  bottom: -40px;
  border-radius: 50%;
  background: #7B5CFF;
  opacity: 0.1;
  filter: blur(90px);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 56px;
  align-items: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
}

.hero-eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0, 168, 255, 0.6);
}

.hero-title {
  font-family: var(--font-sans);
  font-style: normal;
  color: var(--text-title);
  font-size: clamp(2.1rem, 4.6vw, 3.2rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.01em;
  margin-bottom: 20px;
}

.grad-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  line-height: 1.7;
  color: #9FB3D1;
  margin-bottom: 32px;
  max-width: 560px;
}

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

.hero-panel {
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid rgba(140, 180, 255, 0.14);
  background:
    linear-gradient(180deg, rgba(15, 23, 42, 0.85), rgba(10, 16, 30, 0.9));
  box-shadow: var(--shadow-glass);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  padding: 28px;
  position: relative;
}

.hero-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 30px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent);
  border-radius: 22px 22px 0 0;
  pointer-events: none;
}

.hero-panel-top {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-body);
  margin-bottom: 24px;
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(0, 229, 160, 0.6);
  animation: blink 2s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.hero-panel-title {
  color: var(--text-title);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 8px;
}

.hero-panel-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.hero-panel-bar {
  height: 6px;
  border-radius: 999px;
  background: rgba(140, 180, 255, 0.1);
  overflow: hidden;
}

.hero-panel-bar i {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: var(--grad-primary);
  box-shadow: 0 0 16px rgba(0, 168, 255, 0.4);
}

.section {
  padding: 96px 0;
}

.section-alt {
  background: var(--bg-section);
}

.section-head {
  margin-bottom: 48px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 10px;
}

.section-title {
  color: var(--text-title);
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 12px;
}

.section-desc {
  color: var(--text-muted);
  max-width: 640px;
  font-size: 0.95rem;
}

/* Timeline */
.timeline-section {
  padding: 96px 0;
  background: var(--bg-page);
  position: relative;
}

.timeline {
  position: relative;
  margin-top: 48px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 7px;
  width: 2px;
  background: linear-gradient(to bottom, rgba(0, 168, 255, 0.6), rgba(123, 92, 255, 0.35), transparent);
}

.timeline-item {
  position: relative;
  padding-left: 36px;
  margin-bottom: 32px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 28px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary);
  border: 4px solid #0B1120;
  box-shadow: 0 0 0 4px rgba(0, 168, 255, 0.15);
}

.timeline-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  padding: 24px;
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.timeline-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 30px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent);
  border-radius: 16px 16px 0 0;
  pointer-events: none;
}

.timeline-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 168, 255, 0.35);
  box-shadow: var(--shadow-glass);
}

.timeline-media {
  border-radius: var(--radius-inner);
  overflow: hidden;
  margin-bottom: 20px;
  aspect-ratio: 16 / 9;
  background: rgba(10, 16, 30, 0.6);
}

.timeline-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.timeline-card:hover .timeline-media img {
  transform: scale(1.03);
}

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

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-title);
  background: rgba(0, 168, 255, 0.1);
  border-left: 3px solid var(--primary);
}

.tag-purple {
  background: rgba(123, 92, 255, 0.12);
  border-left-color: var(--secondary);
}

.tag-orange {
  background: rgba(255, 138, 61, 0.12);
  border-left-color: var(--alert);
}

.tag-green {
  background: rgba(0, 229, 160, 0.1);
  border-left-color: var(--accent);
}

.timeline-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-feature-settings: "tnum";
}

.timeline-card h3 {
  color: var(--text-title);
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 10px;
  transition: color 0.18s ease;
}

.timeline-card:hover h3 {
  color: var(--primary);
}

.timeline-card p {
  color: var(--text-body);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.timeline-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--primary);
  font-weight: 500;
}

.timeline-link::after {
  content: "→";
  transition: transform 0.2s;
}

.timeline-link:hover::after {
  transform: translateX(4px);
}

/* Topics */
.topics-section {
  padding: 96px 0;
  background: var(--bg-section);
  border-top: 1px solid var(--border-line);
  border-bottom: 1px solid var(--border-line);
}

.topics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.topic-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  overflow: hidden;
  position: relative;
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.topic-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 168, 255, 0.35);
  box-shadow: var(--shadow-glass);
}

.topic-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: rgba(10, 16, 30, 0.6);
}

.topic-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.topic-card:hover .topic-media img {
  transform: scale(1.04);
}

.topic-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--alert);
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 138, 61, 0.3);
}

.topic-body {
  padding: 24px;
}

.topic-body h3 {
  color: var(--text-title);
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
}

.topic-body p {
  color: var(--text-body);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.topic-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--primary);
  font-weight: 500;
}

.topic-link::after {
  content: "→";
  transition: transform 0.2s;
}

.topic-link:hover::after {
  transform: translateX(4px);
}

/* Stats */
.stats-section {
  padding: 72px 0;
  background: var(--bg-page);
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 600px;
  height: 300px;
  transform: translate(-50%, -50%);
  background: radial-gradient(ellipse, rgba(0, 168, 255, 0.05), transparent 70%);
  pointer-events: none;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  z-index: 1;
}

.stat-item {
  text-align: center;
  padding: 32px 16px;
  border-radius: var(--radius-card);
  background: rgba(15, 23, 42, 0.35);
  border: 1px solid var(--border-glass);
}

.stat-num {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 8px;
  font-feature-settings: "tnum";
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* CTA */
.cta-section {
  padding: 96px 0;
  background: linear-gradient(135deg, var(--bg-section), var(--bg-page));
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.08;
  filter: blur(100px);
  left: -120px;
  top: 50%;
  transform: translateY(-50%);
}

.cta-card {
  position: relative;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 40px;
  border-radius: 22px;
  background: rgba(15, 23, 42, 0.65);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  box-shadow: var(--shadow-card);
}

.cta-card h2 {
  color: var(--text-title);
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-card p {
  color: var(--text-body);
  margin-bottom: 32px;
  font-size: 1.05rem;
}

.cta-trust {
  display: block;
  margin-top: 24px;
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.cta-trust::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 8px;
  vertical-align: 2px;
}

/* FAQ */
.faq-section {
  padding: 96px 0;
  background: var(--bg-section);
  border-top: 1px solid var(--border-line);
}

.faq-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.faq-item {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.faq-item[open] {
  border-color: rgba(0, 168, 255, 0.4);
  box-shadow: 0 0 24px rgba(0, 168, 255, 0.08);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-title);
  position: relative;
  padding-right: 48px;
}

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

.faq-item summary::after {
  content: "";
  position: absolute;
  right: 24px;
  top: 50%;
  width: 12px;
  height: 12px;
  transform: translateY(-50%);
  background:
    linear-gradient(var(--text-muted), var(--text-muted)) center / 100% 2px no-repeat,
    linear-gradient(var(--text-muted), var(--text-muted)) center / 2px 100% no-repeat;
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
  background:
    linear-gradient(var(--primary), var(--primary)) center / 100% 2px no-repeat;
}

.faq-item p {
  padding: 0 24px 20px;
  font-size: 0.9rem;
  color: #9FB3D1;
  line-height: 1.75;
}

/* Footer */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border-glass);
  padding: 56px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 320px;
  line-height: 1.7;
}

.footer-nav h4,
.footer-info h4 {
  color: var(--text-title);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-nav a {
  display: block;
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 6px 0;
}

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

.footer-info p {
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 6px 0;
}

.footer-copy {
  border-top: 1px solid var(--border-line);
  margin-top: 40px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-copy a {
  color: var(--text-muted);
}

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

/* Responsive */
@media (max-width: 1023px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(6, 9, 16, 0.97);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 24px 20px;
    border-bottom: 1px solid var(--border-glass);
    z-index: 120;
  }

  .site-header.open .main-nav {
    display: flex;
  }

  .main-nav .nav-link {
    padding: 14px 8px;
    font-size: 1rem;
    border-bottom: 1px solid var(--border-line);
    border-radius: 0;
  }

  .main-nav .nav-link:last-of-type {
    border-bottom: none;
  }

  .main-nav .nav-link.active::after {
    display: none;
  }

  .nav-toggle {
    display: block;
    margin-left: auto;
  }

  .btn-header {
    display: none;
  }

  .mobile-tabbar {
    display: flex;
  }

  body {
    padding-bottom: calc(62px + env(safe-area-inset-bottom));
  }

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

  .hero-panel {
    max-width: 420px;
  }

  .section,
  .timeline-section,
  .topics-section,
  .faq-section {
    padding: 72px 0;
  }

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

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

  .footer-grid {
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .topics-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 16px;
    margin: 0 -16px;
    padding: 0 16px 16px;
  }

  .topic-card {
    min-width: 280px;
    scroll-snap-align: start;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

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

  .footer-brand p {
    margin: 0 auto;
  }

  .hero-actions .btn {
    flex: 1;
  }
}

@media (max-width: 540px) {
  .hero-title {
    font-size: clamp(1.7rem, 7vw, 2.4rem);
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-panel {
    padding: 20px;
  }

  .timeline-item {
    padding-left: 32px;
  }

  .timeline-card {
    padding: 20px;
  }

  .cta-card {
    padding: 36px 24px;
  }

  .cta-section .btn-lg {
    width: 100%;
  }
}

@media (min-width: 1024px) {
  .timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .timeline-item {
    width: calc(50% - 48px);
    padding-left: 0;
    margin-bottom: 40px;
  }

  .timeline-item:nth-child(odd) {
    margin-right: auto;
  }

  .timeline-item:nth-child(even) {
    margin-left: auto;
  }

  .timeline-item::before {
    left: auto;
    right: -48px;
  }

  .timeline-item:nth-child(even)::before {
    right: auto;
    left: -48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 540px) {
  .btn-glow::before {
    display: none;
  }
}