/* roulang page: index */
:root {
  --bg-deep: #0C1226;
  --bg-panel: #0E1730;
  --bg-card: rgba(255, 255, 255, 0.06);
  --bg-card-hover: rgba(255, 255, 255, 0.1);
  --border-soft: rgba(255, 255, 255, 0.12);
  --border-bright: rgba(255, 255, 255, 0.22);
  --brand-blue: #1E6FFF;
  --brand-blue-light: #4D8DFF;
  --track-cyan: #19E3C8;
  --race-orange: #FF7A1A;
  --neon-lime: #CDED4F;
  --text-primary: #EAF0FF;
  --text-secondary: #A0AAC2;
  --text-muted: #6C7592;
  --danger: #FF5D5D;
  --success: #2FD08D;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-tag: 20px;
  --radius-sm: 6px;
  --shadow-card: 0 6px 24px rgba(0, 0, 0, 0.35);
  --shadow-float: 0 8px 40px rgba(0, 0, 0, 0.5);
  --glow-blue: 0 0 20px rgba(30, 111, 255, 0.45);
  --glow-orange: 0 0 26px rgba(255, 122, 26, 0.45);
  --transition-base: all 0.25s ease;
  --font-cn: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  --font-en: Inter, "DIN Alternate", sans-serif;
  --container-width: 1200px;
  --section-gap: 80px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-cn);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.8;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand-blue-light); text-decoration: none; transition: var(--transition-base); }
a:hover { color: var(--track-cyan); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; outline: none; }
.container { max-width: var(--container-width); margin: 0 auto; padding: 0 24px; }
.section-gap { padding: 80px 0; }
h1, h2, h3, h4, h5 { line-height: 1.3; letter-spacing: 0.02em; font-weight: 700; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 32px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  border: none;
  cursor: pointer;
  transition: var(--transition-base);
  white-space: nowrap;
}
.btn-primary {
  background: var(--brand-blue);
  color: #fff;
  box-shadow: var(--glow-blue);
}
.btn-primary:hover { background: var(--brand-blue-light); color: #fff; box-shadow: 0 0 24px rgba(30, 111, 255, 0.6); transform: translateY(-2px); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 0 12px rgba(30, 111, 255, 0.3); }
.btn-primary:focus-visible { outline: 2px solid var(--track-cyan); outline-offset: 3px; }
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--brand-blue);
}
.btn-secondary:hover { background: rgba(30, 111, 255, 0.15); color: #fff; border-color: var(--brand-blue-light); transform: translateY(-2px); }
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-soft);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); color: var(--text-primary); border-color: var(--border-bright); }
.btn-lg { height: 54px; padding: 0 44px; font-size: 16px; }
.btn-glow:hover { box-shadow: var(--glow-orange); }
.btn-block { width: 100%; }

/* ===== 顶部通知条 ===== */
.top-bar {
  height: 36px;
  background: #080D1A;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  font-size: 13px;
  color: var(--text-secondary);
}
.top-bar-inner { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.top-bar a { color: var(--text-secondary); margin-right: 16px; }
.top-bar a:hover { color: var(--track-cyan); }
.top-bar .highlight { color: var(--race-orange); }

/* ===== 导航区 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(12, 18, 38, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
}
.header-brand-row { display: flex; justify-content: space-between; align-items: center; padding: 18px 0 12px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon {
  width: 42px; height: 42px;
  background: linear-gradient(135deg, var(--brand-blue), var(--track-cyan));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; color: #fff;
  box-shadow: 0 0 18px rgba(30, 111, 255, 0.35);
}
.logo-text { font-size: 22px; font-weight: 800; color: var(--text-primary); letter-spacing: 0.02em; }
.logo-text span { color: var(--track-cyan); }
.header-tools { display: flex; align-items: center; gap: 14px; }
.header-search {
  height: 40px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-btn);
  display: flex; align-items: center; padding: 0 14px; gap: 8px;
  width: 220px;
}
.header-search input { background: transparent; border: none; color: var(--text-primary); font-size: 14px; width: 100%; }
.header-search input::placeholder { color: var(--text-muted); }
.header-search i { color: var(--text-muted); font-size: 14px; }
.btn-auth { height: 40px; padding: 0 20px; font-size: 14px; }
.btn-login { background: transparent; border: 1px solid var(--border-soft); color: var(--text-primary); }
.btn-login:hover { border-color: var(--brand-blue); color: var(--brand-blue-light); background: rgba(30, 111, 255, 0.08); }
.btn-register { background: var(--brand-blue); color: #fff; box-shadow: 0 0 14px rgba(30, 111, 255, 0.3); }
.btn-register:hover { background: var(--brand-blue-light); color: #fff; }

.header-nav-row {
  border-top: 1px solid var(--border-soft);
  background: rgba(8, 13, 26, 0.6);
}
.nav-channel { display: flex; align-items: center; flex-wrap: wrap; }
.nav-channel .nav-item {
  display: flex; align-items: center;
  height: 48px;
  padding: 0 22px;
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 500;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  transition: var(--transition-base);
}
.nav-channel .nav-item:first-child { border-left: 1px solid rgba(255, 255, 255, 0.08); }
.nav-channel .nav-item:hover { color: var(--text-primary); background: rgba(255, 255, 255, 0.04); }
.nav-channel .nav-item:hover::after {
  content: '';
  position: absolute;
  bottom: 0; left: 10%; right: 10%;
  height: 2px;
  background: var(--track-cyan);
  box-shadow: 0 0 12px rgba(25, 227, 200, 0.6);
  border-radius: 2px;
}
.nav-channel .nav-item.active {
  background: rgba(30, 111, 255, 0.15);
  color: #fff;
}
.nav-channel .nav-item.active::before {
  content: '';
  position: absolute;
  left: 50%; bottom: 0;
  transform: translateX(-50%);
  width: 4px; height: 4px;
  background: var(--track-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--track-cyan);
}
.nav-item .nav-dot { width: 6px; height: 6px; background: var(--race-orange); border-radius: 50%; margin-left: 6px; box-shadow: 0 0 8px rgba(255, 122, 26, 0.6); }

.mobile-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 24px; cursor: pointer; width: 44px; height: 44px; border-radius: 8px; }
.mobile-toggle:hover { background: rgba(255, 255, 255, 0.06); }
.mobile-nav { display: none; background: #0A101F; border-top: 1px solid var(--border-soft); padding: 8px 16px 16px; }
.mobile-nav .nav-item { display: block; padding: 12px 16px; font-size: 16px; color: var(--text-secondary); border-bottom: 1px solid rgba(255,255,255,0.05); }
.mobile-nav .nav-item.active { color: var(--track-cyan); }
.mobile-nav .nav-item:last-child { border-bottom: none; }
.mobile-search { display: none; margin: 12px 16px 0; height: 42px; background: rgba(255,255,255,0.06); border: 1px solid var(--border-soft); border-radius: 8px; align-items: center; padding: 0 14px; gap: 8px; }
.mobile-search input { background: transparent; border: none; color: var(--text-primary); width: 100%; font-size: 14px; }

/* ===== Hero 首屏 ===== */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  background: linear-gradient(90deg, #0C1226 0%, rgba(12, 18, 38, 0.88) 50%, rgba(12, 18, 38, 0.72) 100%), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  padding: 70px 0;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -120px; right: -120px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(30, 111, 255, 0.18) 0%, transparent 70%);
  z-index: 0;
}
.hero-inner { position: relative; z-index: 2; display: flex; align-items: center; gap: 60px; }
.hero-content { flex: 0 0 55%; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 122, 26, 0.12);
  border: 1px solid rgba(255, 122, 26, 0.3);
  color: var(--race-orange);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--radius-tag);
  margin-bottom: 24px;
}
.hero-badge i { font-size: 14px; }
.hero h1 { font-size: 44px; font-weight: 800; color: #fff; line-height: 1.25; margin-bottom: 20px; }
.hero h1 .highlight { color: var(--track-cyan); position: relative; }
.hero-subtitle { font-size: 18px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 36px; max-width: 560px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 32px; }
.hero-stats { display: flex; gap: 32px; flex-wrap: wrap; }
.hero-stat { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-muted); }
.hero-stat i { color: var(--neon-lime); font-size: 16px; }
.hero-visual { flex: 0 0 45%; position: relative; }
.hero-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 20px;
  padding: 12px;
  box-shadow: var(--shadow-float);
  position: relative;
  backdrop-filter: blur(6px);
}
.hero-card img { border-radius: 14px; min-height: 320px; object-fit: cover; width: 100%; }
.float-card {
  position: absolute;
  background: rgba(10, 16, 31, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 12px;
  padding: 12px 18px;
  backdrop-filter: blur(8px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  gap: 12px;
}
.float-card .fc-number { font-size: 20px; font-weight: 800; color: var(--neon-lime); line-height: 1; }
.float-card .fc-label { font-size: 12px; color: var(--text-secondary); }
.float-card-1 { top: 30px; left: -30px; animation: floatY 4s ease-in-out infinite; }
.float-card-2 { bottom: 40px; right: -20px; animation: floatY 5s ease-in-out 0.5s infinite; }
.float-card i { font-size: 18px; color: var(--race-orange); }
@keyframes floatY { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* ===== 赛事滚动条 ===== */
.marquee-bar {
  background: rgba(8, 13, 26, 0.7);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  padding: 14px 0;
  overflow: hidden;
  white-space: nowrap;
  position: relative;
}
.marquee-track { display: inline-flex; gap: 60px; animation: marquee 30s linear infinite; }
.marquee-item { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-secondary); }
.marquee-item i { color: var(--race-orange); }
.marquee-item strong { color: var(--text-primary); font-weight: 600; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ===== 数据条 ===== */
.stats-bar { background: var(--bg-panel); border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); padding: 40px 0; }
.stats-grid { display: flex; flex-wrap: wrap; }
.stats-item { flex: 1 1 25%; text-align: center; padding: 16px 10px; border-right: 1px solid rgba(255, 255, 255, 0.1); }
.stats-item:last-child { border-right: none; }
.stats-number { font-size: 32px; font-weight: 800; color: var(--neon-lime); font-family: var(--font-en); line-height: 1.2; transition: var(--transition-base); }
.stats-item:hover .stats-number { color: var(--brand-blue-light); }
.stats-label { font-size: 14px; color: var(--text-secondary); margin-top: 8px; letter-spacing: 0.04em; }

/* ===== 板块通用标题 ===== */
.section-header { margin-bottom: 44px; }
.section-tag { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; color: var(--track-cyan); background: rgba(25, 227, 200, 0.08); padding: 5px 14px; border-radius: var(--radius-tag); margin-bottom: 14px; letter-spacing: 0.04em; }
.section-header h2 { font-size: 32px; font-weight: 700; color: var(--text-primary); margin-bottom: 12px; }
.section-header .section-desc { font-size: 16px; color: var(--text-secondary); max-width: 640px; line-height: 1.8; }

/* ===== 功能服务卡片 ===== */
.service-section { background: var(--bg-deep); }
.service-grid { display: flex; flex-wrap: wrap; margin: -12px; }
.service-card {
  flex: 0 0 calc(33.333% - 24px);
  margin: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  padding: 28px;
  position: relative;
  transition: var(--transition-base);
  overflow: hidden;
}
.service-card:hover { background: var(--bg-card-hover); transform: translateY(-6px); border-color: var(--border-bright); }
.service-card::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 3px;
  background: var(--brand-blue);
  transition: var(--transition-base);
}
.service-card:hover::after { width: 100%; }
.service-card .card-num { position: absolute; top: 18px; right: 22px; font-size: 40px; font-weight: 800; color: rgba(255, 255, 255, 0.06); font-family: var(--font-en); line-height: 1; }
.service-card .card-badge {
  position: absolute; top: 18px; right: 22px;
  font-size: 11px; font-weight: 600;
  color: var(--race-orange);
  background: rgba(255, 122, 26, 0.1);
  border: 1px solid rgba(255, 122, 26, 0.25);
  padding: 2px 10px;
  border-radius: var(--radius-tag);
}
.service-icon { width: 48px; height: 48px; background: rgba(30, 111, 255, 0.12); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 20px; color: var(--brand-blue-light); margin-bottom: 18px; }
.service-card:hover .service-icon { background: rgba(25, 227, 200, 0.15); color: var(--track-cyan); }
.service-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: var(--text-primary); }
.service-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ===== 优势区域 ===== */
.advantage-section { background: var(--bg-panel); border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }
.advantage-layout { display: flex; flex-wrap: wrap; align-items: center; gap: 60px; }
.advantage-left { flex: 1 1 45%; }
.advantage-list { display: flex; flex-direction: column; gap: 28px; }
.advantage-item { display: flex; gap: 16px; }
.adv-icon { width: 44px; height: 44px; background: rgba(25, 227, 200, 0.1); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--track-cyan); font-size: 17px; flex-shrink: 0; border: 1px solid rgba(25, 227, 200, 0.2); }
.advantage-item h3 { font-size: 17px; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; }
.advantage-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.advantage-right { flex: 1 1 45%; position: relative; }
.advantage-right .main-img { border-radius: 20px; box-shadow: var(--shadow-float); width: 100%; }
.adv-float-card {
  position: absolute;
  bottom: 28px; left: -24px;
  background: rgba(8, 13, 26, 0.85);
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  padding: 16px 20px;
  backdrop-filter: blur(8px);
  display: flex; align-items: center; gap: 12px;
  box-shadow: var(--shadow-float);
  animation: floatY 5s ease-in-out infinite;
}
.adv-float-card .afc-num { font-size: 24px; font-weight: 800; color: var(--neon-lime); font-family: var(--font-en); }
.adv-float-card .afc-label { font-size: 13px; color: var(--text-secondary); }

/* ===== Logo 墙 ===== */
.logo-wall-section { background: var(--bg-deep); }
.logo-wall-title { text-align: center; font-size: 14px; color: var(--text-muted); margin-bottom: 32px; letter-spacing: 0.08em; }
.logo-wall { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
.logo-wall-item {
  width: 140px;
  height: 56px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 600;
  color: #6C7592;
  filter: grayscale(1);
  opacity: 0.7;
  transition: var(--transition-base);
  cursor: default;
}
.logo-wall-item:hover { filter: grayscale(0); opacity: 1; color: var(--text-primary); border-color: var(--border-bright); background: var(--bg-card); }
.logo-wall-item i { margin-right: 6px; color: var(--track-cyan); }

/* ===== 场景方案卡片 ===== */
.scene-section { background: var(--bg-panel); border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }
.scene-grid { display: flex; flex-wrap: wrap; gap: 24px; }
.scene-card {
  flex: 1 1 calc(50% - 24px);
  background: linear-gradient(135deg, rgba(30, 111, 255, 0.08) 0%, rgba(30, 40, 80, 0.12) 100%);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  padding: 36px;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}
.scene-card:hover { border-color: rgba(30, 111, 255, 0.4); transform: translateY(-4px); box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4); }
.scene-card::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(30, 111, 255, 0.15) 0%, transparent 70%);
}
.scene-card .scene-icon { width: 52px; height: 52px; border-radius: 14px; background: rgba(25, 227, 200, 0.1); border: 1px solid rgba(25, 227, 200, 0.25); display: flex; align-items: center; justify-content: center; font-size: 22px; color: var(--track-cyan); margin-bottom: 20px; }
.scene-card h3 { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.scene-card > p { font-size: 15px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 20px; }
.scene-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.tag {
  display: inline-flex; align-items: center;
  font-size: 12px; color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-tag);
  padding: 4px 14px;
  transition: var(--transition-base);
}
.tag:hover { color: var(--track-cyan); border-color: rgba(25, 227, 200, 0.3); }
.scene-link { font-size: 14px; font-weight: 600; color: var(--brand-blue-light); display: inline-flex; align-items: center; gap: 6px; }
.scene-link i { font-size: 12px; transition: transform 0.25s ease; }
.scene-link:hover i { transform: translateX(4px); }

/* ===== 资讯动态 ===== */
.news-section { background: var(--bg-deep); }
.news-layout { display: flex; flex-wrap: wrap; gap: 24px; }
.news-feature { flex: 1 1 48%; }
.news-feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: var(--transition-base);
  height: 100%;
  display: flex; flex-direction: column;
}
.news-feature-card:hover { border-color: var(--border-bright); transform: translateY(-4px); box-shadow: var(--shadow-card); }
.news-feature-card .nfc-img { position: relative; height: 220px; overflow: hidden; }
.news-feature-card .nfc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.news-feature-card:hover .nfc-img img { transform: scale(1.05); }
.news-feature-card .nfc-img .nfc-tag { position: absolute; top: 14px; left: 14px; background: rgba(30, 111, 255, 0.9); color: #fff; font-size: 12px; padding: 4px 12px; border-radius: var(--radius-tag); font-weight: 500; }
.news-feature-card .nfc-body { padding: 20px 24px 24px; flex: 1; display: flex; flex-direction: column; }
.news-feature-card h3 { font-size: 18px; font-weight: 600; color: var(--text-primary); margin-bottom: 10px; line-height: 1.45; }
.news-feature-card h3 a { color: var(--text-primary); }
.news-feature-card h3 a:hover { color: var(--track-cyan); }
.news-feature-card .nfc-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-feature-card .nfc-meta { display: flex; align-items: center; gap: 14px; margin-top: 16px; color: var(--text-muted); font-size: 13px; }
.news-feature-card .nfc-meta i { color: var(--track-cyan); font-size: 13px; margin-right: 4px; }
.news-feature-card .nfc-link { margin-left: auto; color: var(--brand-blue-light); font-size: 13px; font-weight: 500; }
.news-feature-card .nfc-link:hover { color: var(--track-cyan); }
.news-list { flex: 1 1 48%; display: flex; flex-direction: column; }
.news-list-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  margin-bottom: 12px;
  transition: var(--transition-base);
  position: relative;
}
.news-list-item:last-child { margin-bottom: 0; }
.news-list-item:hover { background: var(--bg-card-hover); border-color: var(--border-bright); transform: translateX(4px); }
.news-list-item .nl-dot { width: 10px; height: 10px; background: var(--brand-blue); border-radius: 50%; flex-shrink: 0; margin-top: 8px; box-shadow: 0 0 10px rgba(30, 111, 255, 0.6); transition: var(--transition-base); }
.news-list-item:hover .nl-dot { background: var(--track-cyan); box-shadow: 0 0 12px rgba(25, 227, 200, 0.7); }
.news-list-item .nl-content { flex: 1; }
.news-list-item .nl-cat { font-size: 11px; color: var(--brand-blue-light); margin-right: 8px; }
.news-list-item .nl-title { font-size: 15px; font-weight: 500; color: var(--text-primary); line-height: 1.5; }
.news-list-item .nl-title a { color: var(--text-primary); }
.news-list-item .nl-title a:hover { color: var(--track-cyan); }
.news-list-item .nl-meta { display: flex; align-items: center; gap: 12px; margin-top: 6px; color: var(--text-muted); font-size: 12px; }
.news-list-item .nl-meta i { font-size: 12px; }
.news-list-item .nl-arrow { color: var(--text-muted); align-self: center; font-size: 14px; transition: var(--transition-base); }
.news-list-item:hover .nl-arrow { color: var(--track-cyan); transform: translateX(4px); }
.news-feature-card .nfc-empty, .news-list .nlc-empty {
  border: 1px dashed var(--border-bright);
  border-radius: var(--radius-card);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 30px;
  background: rgba(255, 255, 255, 0.02);
  text-align: center;
}
.news-feature-card .nfc-empty { flex: 1; }
.news-list .nlc-empty { min-height: 300px; }
.empty-icon { font-size: 32px; color: var(--text-muted); margin-bottom: 12px; }
.empty-title { font-size: 16px; color: var(--text-secondary); margin-bottom: 6px; }
.empty-desc { font-size: 14px; color: var(--text-muted); }
.news-section .news-toolbar { display: flex; justify-content: flex-end; margin-top: 28px; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-panel); border-top: 1px solid var(--border-soft); }
.faq-layout { display: flex; flex-wrap: wrap; gap: 60px; }
.faq-left { flex: 0 0 30%; }
.faq-left .section-header { margin-bottom: 20px; }
.faq-contact { margin-top: 28px; padding: 24px; background: rgba(255, 255, 255, 0.04); border: 1px solid var(--border-soft); border-radius: var(--radius-card); }
.faq-contact h4 { font-size: 16px; color: var(--text-primary); margin-bottom: 8px; }
.faq-contact p { font-size: 14px; color: var(--text-secondary); margin-bottom: 16px; }
.faq-right { flex: 1 1 60%; }
.faq-item { margin-bottom: 12px; border: 1px solid var(--border-soft); border-radius: 12px; background: var(--bg-card); overflow: hidden; transition: var(--transition-base); }
.faq-item:hover { border-color: var(--border-bright); }
.faq-item.active { border-color: rgba(30, 111, 255, 0.4); }
.faq-question { width: 100%; background: none; border: none; color: var(--text-primary); font-size: 15px; font-weight: 500; padding: 18px 20px; display: flex; align-items: center; justify-content: space-between; gap: 12px; cursor: pointer; text-align: left; transition: var(--transition-base); min-height: 56px; }
.faq-question:hover { color: var(--track-cyan); }
.faq-question .faq-icon { font-size: 18px; color: var(--track-cyan); transition: transform 0.3s ease; flex-shrink: 0; width: 24px; text-align: center; }
.faq-item.active .faq-icon { transform: rotate(45deg); color: var(--race-orange); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-answer-inner { padding: 0 20px 18px; font-size: 14px; color: var(--text-secondary); line-height: 1.8; }

/* ===== CTA / 联系 ===== */
.cta-section { background: var(--bg-deep); }
.cta-banner {
  background: linear-gradient(135deg, #101D3D 0%, #0A101F 100%), url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
  background-blend-mode: overlay;
  border: 1px solid var(--border-soft);
  border-radius: 20px;
  padding: 56px 60px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  position: relative;
  overflow: hidden;
}
.cta-banner::before { content: ''; position: absolute; top: -80px; left: 30%; width: 360px; height: 360px; background: radial-gradient(circle, rgba(30, 111, 255, 0.25) 0%, transparent 70%); pointer-events: none; }
.cta-banner h2 { font-size: 28px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.cta-banner p { font-size: 15px; color: var(--text-secondary); max-width: 600px; }
.cta-actions { display: flex; gap: 16px; flex-wrap: wrap; flex-shrink: 0; }
.cta-contact-info { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 12px; }

/* ===== 页脚 ===== */
.site-footer { background: #080D1A; padding: 60px 0 24px; border-top: 1px solid rgba(255, 255, 255, 0.06); }
.footer-brand-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; padding-bottom: 32px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); margin-bottom: 36px; gap: 16px; }
.footer-desc { font-size: 14px; color: var(--text-muted); max-width: 480px; line-height: 1.7; }
.footer-social { display: flex; gap: 10px; }
.footer-social a { width: 38px; height: 38px; border-radius: 8px; border: 1px solid var(--border-soft); display: flex; align-items: center; justify-content: center; color: var(--text-secondary); background: rgba(255, 255, 255, 0.03); }
.footer-social a:hover { color: var(--track-cyan); border-color: rgba(25, 227, 200, 0.3); }
.footer-col-grid { display: flex; flex-wrap: wrap; gap: 30px; padding-bottom: 36px; border-bottom: 1px solid rgba(255, 255, 255, 0.06); }
.footer-col { flex: 1 1 22%; min-width: 160px; }
.footer-col h4 { font-size: 15px; font-weight: 600; color: var(--text-primary); margin-bottom: 16px; }
.footer-col a { display: block; font-size: 13px; color: var(--text-secondary); padding: 5px 0; }
.footer-col a:hover { color: var(--brand-blue-light); padding-left: 4px; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; padding-top: 24px; gap: 12px; font-size: 12px; color: var(--text-muted); }
.footer-bottom .copyright a { color: var(--text-muted); }
.footer-bottom .copyright a:hover { color: var(--track-cyan); }
.footer-bottom-links { display: flex; gap: 20px; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  :root { --section-gap: 56px; }
  .section-gap { padding: 56px 0; }
  .hero h1 { font-size: 36px; }
  .float-card-1 { left: -10px; }
  .float-card-2 { right: -10px; }
  .service-card { flex: 0 0 calc(50% - 24px); }
  .news-feature { flex: 1 1 100%; }
  .news-list { flex: 1 1 100%; }
  .faq-left { flex: 0 0 100%; }
  .faq-right { flex: 1 1 100%; }
  .cta-banner { padding: 40px; }
}
@media (max-width: 720px) {
  :root { --section-gap: 40px; }
  .section-gap { padding: 40px 0; }
  .container { padding: 0 16px; }
  .top-bar-inner { flex-wrap: wrap; justify-content: center; } 
  .top-bar .top-left { display: none; }
  .header-brand-row { padding: 12px 0; }
  .header-search, .btn-auth { display: none; }
  .mobile-toggle { display: flex; align-items: center; justify-content: center; }
  .mobile-search { display: flex; }
  .nav-channel { display: none; }
  .mobile-nav { display: block; }
  .hero { min-height: auto; padding: 50px 0; }
  .hero-inner { flex-direction: column; gap: 40px; }
  .hero-content { flex: 1 1 100%; text-align: center; }
  .hero-badge { justify-content: center; }
  .hero-subtitle { margin-left: auto; margin-right: auto; }
  .hero-btns { justify-content: center; }
  .hero-visual { flex: 1 1 100%; }
  .float-card-1 { left: 0; }
  .float-card-2 { right: 0; }
  .stats-item { flex: 1 1 50%; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
  .stats-item:nth-child(2) { border-right: none; }
  .stats-item:nth-child(3), .stats-item:nth-child(4) { border-bottom: 0; }
  .service-card { flex: 0 0 calc(100% - 24px); margin: 8px 12px; }
  .advantage-layout { gap: 40px; }
  .advantage-float-card { left: 0; }
  .scene-card { flex: 1 1 100%; }
  .cta-banner { padding: 32px 24px; flex-direction: column; text-align: center; }
  .cta-actions { justify-content: center; }
  .cta-contact-info { justify-content: center; }
  .news-feature-card .nfc-img { height: 180px; }
  .section-header h2 { font-size: 26px; }
  .footer-col-grid { gap: 24px; }
  .footer-bottom { justify-content: center; text-align: center; }
  .navbar-collapse-mobile { display: block; }
}
@media (max-width: 480px) {
  .hero h1 { font-size: 30px; }
  .hero-subtitle { font-size: 16px; }
  .btn-lg { padding: 0 28px; height: 48px; }
  .stats-number { font-size: 24px; }
  .logo-text { font-size: 18px; }
  .news-list-item .nl-title { font-size: 14px; }
  .marquee-item { font-size: 13px; }
  .footer-brand-row { flex-direction: column; align-items: flex-start; }
}

/* roulang page: article */
:root {
  --bg-dark: #0C1226;
  --bg-panel: #0E1730;
  --bg-card: rgba(255,255,255,0.06);
  --bg-card-hover: rgba(255,255,255,0.1);
  --brand-blue: #1E6FFF;
  --brand-cyan: #19E3C8;
  --brand-orange: #FF7A1A;
  --brand-lime: #CDED4F;
  --text-main: #EAF0FF;
  --text-secondary: #A0AAC2;
  --text-muted: #6C7592;
  --border-color: rgba(255,255,255,0.12);
  --radius-card: 16px;
  --radius-btn: 10px;
  --shadow-card: 0 6px 24px rgba(0,0,0,0.35);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  --font-num: Inter, "DIN Alternate", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand-blue); text-decoration: none; transition: color 0.25s ease; }
a:hover { color: var(--brand-cyan); }
ul, ol { list-style-position: inside; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-gap { padding: 80px 0; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 32px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  border: none;
  transition: all 0.25s ease;
  line-height: 1;
  white-space: nowrap;
}
.btn-primary {
  background: var(--brand-blue);
  color: #fff;
  box-shadow: 0 0 20px rgba(30,111,255,0.45);
}
.btn-primary:hover {
  background: #3A80FF;
  color: #fff;
  box-shadow: 0 0 26px rgba(255,122,26,0.45);
  transform: translateY(-2px);
}
.btn-secondary {
  background: transparent;
  border: 1px solid rgba(30,111,255,0.7);
  color: var(--brand-blue);
}
.btn-secondary:hover {
  background: rgba(30,111,255,0.15);
  border-color: var(--brand-blue);
  color: var(--brand-blue);
}
.btn-sm { height: 38px; padding: 0 20px; font-size: 14px; }
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  height: 38px;
  padding: 0 16px;
  font-weight: 500;
}
.btn-ghost:hover { color: var(--text-main); background: rgba(255,255,255,0.06); }

/* 顶部通知条 */
.topbar {
  background: #0A0F1F;
  border-bottom: 1px solid var(--border-color);
  height: 36px;
  display: flex;
  align-items: center;
  font-size: 13px;
  color: var(--text-secondary);
}
.topbar-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.topbar a { color: var(--text-secondary); }
.topbar a:hover { color: var(--brand-cyan); }
.topbar-notice i { color: var(--brand-orange); margin-right: 6px; }

/* 头部 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(12,18,38,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}
.brand-row { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; }
.logo { display: inline-flex; align-items: center; gap: 10px; }
.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 0 14px rgba(30,111,255,0.4);
}
.logo-text { font-size: 22px; font-weight: 800; color: var(--text-main); letter-spacing: 0.02em; }
.logo-text span { color: var(--brand-cyan); }
.brand-actions { display: flex; align-items: center; gap: 8px; }
.search-toggle {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
}
.search-toggle:hover { color: var(--text-main); border-color: var(--brand-blue); }
.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 18px;
  align-items: center;
  justify-content: center;
}

/* 频道导航 */
.nav-channel {
  background: rgba(255,255,255,0.03);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  position: relative;
  z-index: 999;
}
.nav-channel-inner {
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-channel-inner::-webkit-scrollbar { display: none; }
.nav-item {
  display: inline-flex;
  align-items: center;
  padding: 12px 22px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-right: 1px solid rgba(255,255,255,0.15);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: all 0.25s ease;
  position: relative;
}
.nav-item:first-child { border-left: 1px solid rgba(255,255,255,0.15); }
.nav-item:hover { color: var(--text-main); background: rgba(30,111,255,0.08); }
.nav-item.active {
  color: #fff;
  background: rgba(30,111,255,0.2);
  border-bottom-color: var(--brand-blue);
}
.nav-item.active::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-cyan);
  box-shadow: 0 0 10px var(--brand-cyan);
}

/* 面包屑 */
.breadcrumb {
  background: rgba(14,23,48,0.6);
  border-bottom: 1px solid var(--border-color);
  padding: 14px 0;
  font-size: 14px;
  color: var(--text-muted);
}
.breadcrumb-inner { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--brand-cyan); }
.breadcrumb-sep { color: var(--text-muted); }
.breadcrumb-current {
  color: var(--text-main);
  max-width: 280px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: inline-block;
}

/* 文章页布局 */
.article-wrapper { padding: 50px 0 80px; background: var(--bg-dark); }
.article-main { padding: 0 24px 0 0; }
.article-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 36px;
  box-shadow: var(--shadow-card);
}
.article-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--text-main);
  margin-bottom: 18px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  color: var(--text-secondary);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 24px;
}
.article-meta i { margin-right: 5px; font-size: 13px; }
.meta-category {
  background: rgba(30,111,255,0.18);
  color: #7AA8FF;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
}
.article-cover {
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 28px;
}
.article-cover img { width: 100%; aspect-ratio: 16/7; object-fit: cover; }

/* 文章正文 */
.article-body { font-size: 17px; line-height: 1.8; color: #D8E0F2; }
.article-body p { margin-bottom: 24px; }
.article-body h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 44px;
  margin-bottom: 20px;
  padding-left: 14px;
  border-left: 4px solid var(--brand-blue);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-main);
  margin-top: 32px;
  margin-bottom: 16px;
}
.article-body h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
  margin-top: 24px;
  margin-bottom: 14px;
}
.article-body blockquote {
  background: rgba(30,111,255,0.08);
  border-left: 4px solid var(--brand-blue);
  padding: 18px 24px;
  border-radius: 0 12px 12px 0;
  margin: 24px 0;
  color: var(--text-secondary);
  font-style: normal;
}
.article-body blockquote p { margin-bottom: 0; }
.article-body ul, .article-body ol { margin: 20px 0; padding-left: 8px; }
.article-body li { margin-bottom: 10px; }
.article-body ul li { list-style: disc; padding-left: 6px; }
.article-body ol li { list-style: decimal; padding-left: 6px; }
.article-body pre {
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  overflow-x: auto;
  margin: 24px 0;
  font-size: 14px;
  line-height: 1.6;
}
.article-body code {
  font-family: "SFMono-Regular", Consolas, monospace;
  background: rgba(255,255,255,0.08);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
}
.article-body pre code { background: none; padding: 0; }
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
}
.article-body th {
  background: rgba(255,255,255,0.08);
  padding: 12px 14px;
  text-align: left;
  font-weight: 600;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-color);
}
.article-body td {
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  color: var(--text-secondary);
}
.article-body tr:last-child td { border-bottom: none; }
.article-body img { border-radius: 12px; margin: 24px 0; }
.article-body a { color: var(--brand-cyan); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: #5EF2D8; }
.article-body strong { color: var(--text-main); font-weight: 600; }

/* 文章标签与分享 */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}
.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 13px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  transition: all 0.25s ease;
}
.tag:hover { border-color: var(--brand-blue); color: var(--text-main); }
.article-share {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
  font-size: 14px;
  color: var(--text-secondary);
}
.share-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all 0.25s ease;
}
.share-btn:hover { border-color: var(--brand-blue); color: var(--brand-blue); transform: translateY(-2px); }

/* 侧边栏 */
.article-sidebar { padding: 0 0 0 24px; }
.sidebar-widget {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 26px;
  margin-bottom: 28px;
}
.sidebar-widget h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-widget h3 i { color: var(--brand-cyan); font-size: 15px; }
.toc-list { list-style: none; padding: 0; }
.toc-list li { margin-bottom: 8px; }
.toc-list a {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  padding: 7px 12px;
  border-radius: 8px;
  border-left: 2px solid transparent;
  transition: all 0.25s ease;
  line-height: 1.5;
}
.toc-list a:hover { color: var(--text-main); background: rgba(30,111,255,0.1); border-left-color: var(--brand-blue); }
.toc-list li.toc-sub a { padding-left: 26px; font-size: 13px; }
.toc-empty { color: var(--text-muted); font-size: 14px; padding: 10px 0; }
.hot-posts { list-style: none; padding: 0; }
.hot-post {
  display: flex;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  align-items: center;
}
.hot-post:last-child { border-bottom: none; }
.hot-post-img {
  width: 68px;
  height: 52px;
  border-radius: 10px;
  object-fit: cover;
  flex-shrink: 0;
}
.hot-post-info { flex: 1; min-width: 0; }
.hot-post-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.25s ease;
}
.hot-post-title:hover { color: var(--brand-blue); }
.hot-post-date { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.sidebar-cta-box {
  border: 1px dashed rgba(255,255,255,0.25);
  border-radius: 16px;
  padding: 28px 22px;
  text-align: center;
  background: rgba(255,255,255,0.02);
}
.sidebar-cta-box .qr-placeholder {
  width: 100px;
  height: 100px;
  margin: 0 auto 14px;
  border-radius: 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--text-muted);
}
.sidebar-cta-box h4 { font-size: 15px; color: var(--text-main); margin-bottom: 8px; }
.sidebar-cta-box p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }
.sidebar-widget-cat a {
  display: inline-block;
  font-size: 13px;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 4px 12px;
  margin: 0 6px 8px 0;
  transition: all 0.25s ease;
}
.sidebar-widget-cat a:hover { color: var(--text-main); border-color: var(--brand-blue); background: rgba(30,111,255,0.1); }

/* 空态 */
.article-empty {
  text-align: center;
  padding: 80px 20px;
  background: rgba(255,255,255,0.03);
  border: 1px dashed var(--border-color);
  border-radius: 20px;
}
.article-empty i { font-size: 48px; color: var(--text-muted); margin-bottom: 18px; }
.article-empty h2 { font-size: 22px; color: var(--text-main); margin-bottom: 12px; }
.article-empty p { color: var(--text-secondary); margin-bottom: 24px; }

/* 相关阅读 */
.related-section { background: var(--bg-panel); padding: 60px 0 70px; border-top: 1px solid var(--border-color); }
.related-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-main);
  text-align: center;
  margin-bottom: 34px;
  letter-spacing: 0.02em;
}
.related-title span { color: var(--brand-cyan); }
.related-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.related-card:hover { transform: translateY(-6px); border-color: rgba(30,111,255,0.5); box-shadow: 0 12px 32px rgba(0,0,0,0.4); }
.related-card-img { width: 100%; height: 170px; object-fit: cover; }
.related-card-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.related-card-tag {
  align-self: flex-start;
  background: rgba(30,111,255,0.18);
  color: #7AA8FF;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 10px;
  font-weight: 600;
}
.related-card h3 { font-size: 16px; font-weight: 600; line-height: 1.5; color: var(--text-main); margin-bottom: 10px; }
.related-card h3 a { color: var(--text-main); }
.related-card h3 a:hover { color: var(--brand-cyan); }
.related-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 14px; }
.related-card-link { margin-top: auto; font-size: 13px; color: var(--brand-blue); font-weight: 500; }
.related-card-link i { transition: transform 0.25s ease; }
.related-card:hover .related-card-link i { transform: translateX(4px); }
.related-back { text-align: center; margin-top: 36px; }
.related-back a { font-size: 14px; color: var(--text-secondary); border-bottom: 1px solid var(--border-color); padding-bottom: 4px; transition: all 0.25s ease; }
.related-back a:hover { color: var(--brand-cyan); border-color: var(--brand-cyan); }

/* CTA 区 */
.cta-section {
  background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  position: relative;
  padding: 70px 0;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(12,18,38,0.95) 30%, rgba(12,18,38,0.75));
}
.cta-inner { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-text h2 { font-size: 30px; font-weight: 800; color: var(--text-main); margin-bottom: 10px; }
.cta-text p { color: var(--text-secondary); font-size: 16px; }
.cta-contact { display: flex; align-items: center; gap: 30px; }
.cta-contact-item { text-align: center; }
.cta-contact-item i { font-size: 20px; color: var(--brand-cyan); margin-bottom: 4px; }
.cta-contact-item span { display: block; font-size: 13px; color: var(--text-secondary); }
.cta-contact-item strong { font-size: 15px; color: var(--text-main); font-weight: 600; }

/* 页脚 */
.site-footer { background: #080D1A; color: var(--text-secondary); font-size: 14px; }
.footer-brand-row { padding: 40px 0 24px; border-bottom: 1px solid rgba(255,255,255,0.07); display: flex; flex-direction: column; gap: 16px; align-items: flex-start; }
.footer-brand-row .logo .logo-text { font-size: 20px; }
.footer-desc { color: var(--text-muted); font-size: 14px; max-width: 680px; line-height: 1.7; }
.footer-social { display: flex; gap: 12px; margin-top: 4px; }
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  transition: all 0.25s ease;
}
.footer-social a:hover { background: rgba(30,111,255,0.2); border-color: var(--brand-blue); color: #fff; transform: translateY(-2px); }
.footer-col-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  padding: 32px 0;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.footer-col h4 { font-size: 15px; font-weight: 600; color: var(--text-main); margin-bottom: 14px; }
.footer-col a { display: block; font-size: 13px; color: var(--text-muted); padding: 5px 0; transition: all 0.25s ease; }
.footer-col a:hover { color: var(--brand-blue); padding-left: 4px; }
.footer-bottom {
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--text-muted);
}
.footer-bottom-links { display: flex; gap: 18px; }
.footer-bottom-links a { color: var(--text-muted); }
.footer-bottom-links a:hover { color: var(--brand-blue); }

/* 响应式 */
@media (max-width: 1024px) {
  .article-main { padding-right: 0; }
  .article-sidebar { padding-left: 0; margin-top: 36px; }
  .cta-inner { flex-direction: column; text-align: center; }
  .cta-contact { justify-content: center; flex-wrap: wrap; }
}
@media (max-width: 720px) {
  .section-gap { padding: 56px 0; }
  .container { padding: 0 16px; }
  .topbar-notice span { max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .brand-actions .btn-ghost, .brand-actions .btn-sm { display: none; }
  .menu-toggle { display: inline-flex; }
  .nav-channel-inner {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(12,18,38,0.98);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
  }
  .nav-channel-inner.open { display: flex; }
  .nav-item { border: none; border-bottom: 1px solid rgba(255,255,255,0.06); padding: 14px 20px; }
  .nav-item:first-child { border-left: none; }
  .nav-item.active { background: rgba(30,111,255,0.15); }
  .nav-item.active::after { display: none; }
  .article-wrapper { padding: 28px 0 50px; }
  .article-card { padding: 20px; }
  .article-title { font-size: 24px; }
  .article-body { font-size: 16px; }
  .article-body h2 { font-size: 22px; }
  .article-body h3 { font-size: 18px; }
  .article-body table { display: block; overflow-x: auto; }
  .article-cover img { aspect-ratio: 16/9; }
  .footer-col-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .cta-text h2 { font-size: 24px; }
  .cta-section { padding: 48px 0; }
  .related-card-img { height: 140px; }
}
@media (max-width: 520px) {
  .footer-col-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .article-meta { gap: 10px; font-size: 13px; }
  .breadcrumb-current { max-width: 160px; }
  .brand-actions .search-toggle { display: none; }
}

/* roulang page: category1 */
/* ===== Design Variables ===== */
    :root {
      --color-bg-primary: #0C1226;
      --color-bg-secondary: #0E1730;
      --color-bg-footer: #080D1A;
      --color-brand-blue: #1E6FFF;
      --color-neon-teal: #19E3C8;
      --color-race-orange: #FF7A1A;
      --color-neon-green: #CDED4F;
      --color-text-primary: #EAF0FF;
      --color-text-secondary: #A0AAC2;
      --color-text-muted: #6C7592;
      --color-border: rgba(255, 255, 255, 0.12);
      --color-card-bg: rgba(255, 255, 255, 0.06);
      --color-card-hover: rgba(255, 255, 255, 0.1);
      --radius-card: 16px;
      --radius-btn: 10px;
      --radius-tag: 20px;
      --radius-small: 6px;
      --shadow-card: 0 6px 24px rgba(0, 0, 0, 0.35);
      --shadow-float: 0 8px 40px rgba(0, 0, 0, 0.5);
      --section-gap: 80px;
      --max-width: 1200px;
      --font-main: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
      --font-num: Inter, "DIN Alternate", sans-serif;
      --transition: all 0.25s ease;
    }

    /* ===== Reset / Base ===== */
    *,
    *::before,
    *::after {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-main);
      background: var(--color-bg-primary);
      color: var(--color-text-primary);
      line-height: 1.7;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: var(--color-brand-blue);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover {
      color: var(--color-neon-teal);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button,
    input,
    select,
    textarea {
      font-family: inherit;
      font-size: inherit;
    }
    ul,
    ol {
      list-style: none;
    }

    /* ===== Container ===== */
    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
      width: 100%;
    }

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-btn);
      font-size: 15px;
      font-weight: 600;
      line-height: 1;
      height: 48px;
      padding: 0 32px;
      border: none;
      cursor: pointer;
      transition: var(--transition);
      gap: 8px;
    }
    .btn-primary {
      background: var(--color-brand-blue);
      color: #fff;
    }
    .btn-primary:hover {
      background: #4a8bff;
      box-shadow: 0 0 24px rgba(30, 111, 255, 0.5);
      color: #fff;
    }
    .btn-secondary {
      background: transparent;
      color: var(--color-text-primary);
      border: 1px solid rgba(30, 111, 255, 0.7);
    }
    .btn-secondary:hover {
      background: rgba(30, 111, 255, 0.15);
      border-color: var(--color-brand-blue);
      color: #fff;
    }
    .btn-glow {
      box-shadow: 0 0 20px rgba(30, 111, 255, 0.45);
    }
    .btn-glow:hover {
      box-shadow: 0 0 26px rgba(255, 122, 26, 0.45);
    }
    .btn-lg {
      height: 52px;
      padding: 0 40px;
      font-size: 16px;
    }
    .btn-sm {
      height: 36px;
      padding: 0 20px;
      font-size: 13px;
      border-radius: 8px;
    }
    .btn-text {
      background: transparent;
      color: var(--color-text-primary);
      padding: 0 8px;
      height: auto;
    }
    .btn-text:hover {
      color: var(--color-neon-teal);
    }

    /* ===== Section Base ===== */
    .section {
      padding: var(--section-gap) 0;
    }
    .section-alt {
      background: var(--color-bg-secondary);
    }
    .section-head {
      text-align: center;
      max-width: 680px;
      margin: 0 auto 48px;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      font-weight: 600;
      color: var(--color-neon-teal);
      background: rgba(25, 227, 200, 0.08);
      border: 1px solid rgba(25, 227, 200, 0.25);
      border-radius: var(--radius-tag);
      padding: 6px 16px;
      margin-bottom: 16px;
      letter-spacing: 0.03em;
    }
    .section-head h2 {
      font-size: 32px;
      font-weight: 700;
      line-height: 1.3;
      letter-spacing: 0.02em;
      margin-bottom: 14px;
    }
    .section-head p {
      color: var(--color-text-secondary);
      font-size: 15px;
    }

    /* ===== Topbar ===== */
    .topbar {
      height: 36px;
      background: #0A0F21;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 13px;
      color: var(--color-text-secondary);
      display: flex;
      align-items: center;
    }
    .topbar-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }
    .topbar-inner span i {
      color: var(--color-neon-teal);
      margin-right: 6px;
    }
    .topbar-inner a {
      color: var(--color-text-secondary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
    }
    .topbar-inner a:hover {
      color: var(--color-neon-teal);
    }

    /* ===== Header / Nav ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(12, 18, 38, 0.92);
      -webkit-backdrop-filter: blur(12px);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .nav-brand-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 0;
    }
    .logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--color-text-primary);
    }
    .logo:hover {
      color: var(--color-text-primary);
    }
    .logo-icon {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: linear-gradient(135deg, #1E6FFF, #19E3C8);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 17px;
      color: #fff;
      box-shadow: 0 0 16px rgba(30, 111, 255, 0.35);
      flex-shrink: 0;
    }
    .logo-text {
      font-size: 21px;
      font-weight: 800;
      letter-spacing: 0.02em;
      white-space: nowrap;
    }
    .logo-text span {
      color: var(--color-neon-teal);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .nav-search {
      background: none;
      border: none;
      color: var(--color-text-secondary);
      font-size: 18px;
      cursor: pointer;
      width: 40px;
      height: 40px;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: var(--transition);
    }
    .nav-search:hover {
      background: rgba(255, 255, 255, 0.06);
      color: var(--color-neon-teal);
    }
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      color: #fff;
      font-size: 22px;
      cursor: pointer;
      width: 40px;
      height: 40px;
      border-radius: 10px;
      align-items: center;
      justify-content: center;
      transition: var(--transition);
    }
    .nav-toggle:hover {
      background: rgba(255, 255, 255, 0.06);
    }
    .nav-channel {
      border-top: 1px solid rgba(255, 255, 255, 0.07);
      background: rgba(14, 23, 48, 0.6);
    }
    .nav-channel-inner {
      display: flex;
      align-items: center;
    }
    .nav-item {
      position: relative;
      display: inline-flex;
      align-items: center;
      padding: 14px 24px;
      font-size: 15px;
      font-weight: 500;
      color: var(--color-text-secondary);
      border-left: 1px solid rgba(255, 255, 255, 0.08);
      transition: var(--transition);
      white-space: nowrap;
    }
    .nav-item:first-child {
      border-left: none;
    }
    .nav-item:hover {
      color: #fff;
      background: rgba(255, 255, 255, 0.04);
    }
    .nav-item.active {
      color: #fff;
      background: rgba(30, 111, 255, 0.15);
    }
    .nav-item.active::after {
      content: '';
      position: absolute;
      left: 24px;
      right: 24px;
      bottom: 0;
      height: 2px;
      background: var(--color-brand-blue);
      box-shadow: 0 0 12px rgba(30, 111, 255, 0.6);
    }

    /* ===== Category Hero ===== */
    .category-hero {
      position: relative;
      padding: calc(var(--section-gap) * 0.85) 0;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat fixed;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      overflow: hidden;
    }
    .category-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(12, 18, 38, 0.97) 0%, rgba(12, 18, 38, 0.88) 45%, rgba(30, 111, 255, 0.38) 100%);
    }
    .category-hero::after {
      content: '';
      position: absolute;
      top: 0;
      right: 0;
      width: 40%;
      height: 100%;
      background: linear-gradient(135deg, transparent 60%, rgba(255, 122, 26, 0.15) 100%);
    }
    .category-hero .container {
      position: relative;
      z-index: 2;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 600;
      color: var(--color-neon-teal);
      background: rgba(25, 227, 200, 0.1);
      border: 1px solid rgba(25, 227, 200, 0.3);
      border-radius: var(--radius-tag);
      padding: 6px 16px;
      margin-bottom: 24px;
      letter-spacing: 0.05em;
    }
    .category-hero h1 {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.3;
      letter-spacing: 0.02em;
      margin-bottom: 20px;
    }
    .hero-desc {
      font-size: 17px;
      color: var(--color-text-secondary);
      line-height: 1.8;
      max-width: 480px;
      margin-bottom: 32px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .hero-visual {
      position: relative;
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-float);
      border: 1px solid var(--color-border);
    }
    .hero-visual img {
      width: 100%;
      height: 320px;
      object-fit: cover;
    }
    .hero-visual::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 60%, rgba(12, 18, 38, 0.7) 100%);
    }
    .float-card {
      position: absolute;
      z-index: 3;
      background: rgba(12, 18, 38, 0.85);
      -webkit-backdrop-filter: blur(8px);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 12px;
      padding: 10px 18px;
      font-size: 14px;
      font-weight: 600;
      color: var(--color-text-primary);
      box-shadow: var(--shadow-float);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .float-card-top {
      top: 20px;
      right: 20px;
    }
    .float-card-bottom {
      bottom: 20px;
      left: 20px;
    }
    .float-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--color-neon-green);
      box-shadow: 0 0 8px var(--color-neon-green);
    }
    .float-card-bottom .float-dot {
      background: var(--color-race-orange);
      box-shadow: 0 0 8px var(--color-race-orange);
    }

    /* ===== Stats Bar ===== */
    .stats-bar {
      border-bottom: 1px solid var(--color-border);
      background: var(--color-bg-secondary);
      padding: 40px 0;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0;
    }
    .stat-item {
      text-align: center;
      padding: 8px 20px;
      border-left: 1px solid rgba(255, 255, 255, 0.1);
    }
    .stat-item:first-child {
      border-left: none;
    }
    .stat-num {
      font-family: var(--font-num);
      font-size: 36px;
      font-weight: 800;
      color: var(--color-neon-green);
      letter-spacing: 0.01em;
      line-height: 1.2;
      transition: var(--transition);
    }
    .stat-item:hover .stat-num {
      color: var(--color-brand-blue);
    }
    .stat-label {
      font-size: 14px;
      color: var(--color-text-secondary);
      margin-top: 6px;
      letter-spacing: 0.03em;
    }

    /* ===== Service Cards ===== */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      position: relative;
      background: var(--color-card-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      padding: 28px;
      transition: var(--transition);
      overflow: hidden;
    }
    .service-card::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 3px;
      height: 0;
      background: var(--color-brand-blue);
      transition: var(--transition);
    }
    .service-card:hover {
      transform: translateY(-6px);
      background: var(--color-card-hover);
      border-color: rgba(255, 255, 255, 0.22);
      box-shadow: var(--shadow-card);
    }
    .service-card:hover::after {
      height: 48px;
    }
    .service-num {
      position: absolute;
      top: 18px;
      right: 20px;
      font-family: var(--font-num);
      font-size: 42px;
      font-weight: 800;
      color: rgba(255, 255, 255, 0.07);
      line-height: 1;
      pointer-events: none;
    }
    .service-badge {
      position: absolute;
      top: 18px;
      right: 18px;
      font-size: 11px;
      font-weight: 700;
      color: var(--color-race-orange);
      background: rgba(255, 122, 26, 0.12);
      border: 1px solid rgba(255, 122, 26, 0.35);
      border-radius: 20px;
      padding: 3px 10px;
      letter-spacing: 0.03em;
    }
    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(30, 111, 255, 0.2), rgba(25, 227, 200, 0.18));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      color: var(--color-neon-teal);
      margin-bottom: 20px;
      border: 1px solid rgba(30, 111, 255, 0.25);
    }
    .service-card h3 {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 10px;
      letter-spacing: 0.01em;
    }
    .service-card p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.7;
    }

    /* ===== Scenarios ===== */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .scenario-card {
      position: relative;
      background: linear-gradient(135deg, #0E1730 0%, #151B3B 100%);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      padding: 32px;
      transition: var(--transition);
      overflow: hidden;
      min-height: 260px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .scenario-card:hover {
      transform: translateY(-4px);
      border-color: rgba(30, 111, 255, 0.4);
      box-shadow: var(--shadow-card);
    }
    .scenario-card .scenario-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: rgba(30, 111, 255, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      color: var(--color-brand-blue);
      margin-bottom: 18px;
    }
    .scenario-card h3 {
      font-size: 20px;
      font-weight: 600;
      margin-bottom: 10px;
    }
    .scenario-card p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.7;
      flex: 1;
    }
    .scenario-tags {
      display: flex;
      gap: 8px;
      margin-top: 18px;
      flex-wrap: wrap;
    }
    .scenario-tags span {
      font-size: 12px;
      color: var(--color-neon-teal);
      background: rgba(25, 227, 200, 0.08);
      border: 1px solid rgba(25, 227, 200, 0.2);
      border-radius: var(--radius-tag);
      padding: 4px 12px;
    }

    /* ===== Workflow ===== */
    .workflow {
      position: relative;
      background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat fixed;
      background-color: var(--color-bg-secondary);
    }
    .workflow::before {
      content: '';
      position: absolute;
      inset: 0;
      background: rgba(12, 18, 38, 0.92);
    }
    .workflow .container {
      position: relative;
      z-index: 2;
    }
    .workflow-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      counter-reset: step;
    }
    .step-card {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      padding: 28px 24px;
      text-align: center;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .step-card:hover {
      background: rgba(255, 255, 255, 0.09);
      border-color: rgba(30, 111, 255, 0.4);
      transform: translateY(-4px);
    }
    .step-num {
      counter-increment: step;
      font-family: var(--font-num);
      font-size: 32px;
      font-weight: 800;
      color: rgba(30, 111, 255, 0.9);
      margin-bottom: 14px;
      display: block;
    }
    .step-num::before {
      content: '0' counter(step);
    }
    .step-card h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 10px;
    }
    .step-card p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.7;
    }

    /* ===== FAQ ===== */
    .faq-layout {
      display: grid;
      grid-template-columns: 1fr 2fr;
      gap: 48px;
      align-items: start;
    }
    .faq-left {
      position: sticky;
      top: 160px;
    }
    .faq-left h2 {
      font-size: 32px;
      font-weight: 700;
      line-height: 1.3;
      letter-spacing: 0.02em;
      margin-bottom: 14px;
    }
    .faq-left p {
      color: var(--color-text-secondary);
      font-size: 15px;
      margin-bottom: 24px;
      line-height: 1.8;
    }
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: var(--color-card-bg);
      border: 1px solid var(--color-border);
      border-radius: 12px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item:hover {
      border-color: rgba(255, 255, 255, 0.22);
    }
    .faq-item.open {
      background: rgba(255, 255, 255, 0.08);
      border-color: rgba(30, 111, 255, 0.35);
    }
    .faq-question {
      width: 100%;
      background: none;
      border: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 18px 22px;
      font-size: 15px;
      font-weight: 600;
      color: var(--color-text-primary);
      cursor: pointer;
      text-align: left;
      gap: 16px;
    }
    .faq-question i {
      color: var(--color-text-secondary);
      font-size: 14px;
      transition: transform 0.3s ease;
      flex-shrink: 0;
    }
    .faq-item.open .faq-question i {
      transform: rotate(45deg);
      color: var(--color-neon-teal);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
    }
    .faq-answer-inner {
      padding: 0 22px 20px;
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.8;
    }

    /* ===== CTA Section ===== */
    .cta-section {
      position: relative;
      padding: 72px 0;
      background: linear-gradient(135deg, #0C1226 0%, #101A3D 100%);
      border-top: 1px solid var(--color-border);
      border-bottom: 1px solid var(--color-border);
    }
    .cta-box {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 40px;
      padding: 48px 56px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 20px;
      position: relative;
      overflow: hidden;
    }
    .cta-box::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--color-brand-blue), transparent);
    }
    .cta-box h2 {
      font-size: 26px;
      font-weight: 700;
      margin-bottom: 10px;
      letter-spacing: 0.02em;
    }
    .cta-box p {
      color: var(--color-text-secondary);
      font-size: 15px;
    }
    .cta-actions {
      display: flex;
      gap: 14px;
      flex-shrink: 0;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--color-bg-footer);
      padding-top: 64px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }
    .footer-brand-row {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 32px;
      padding-bottom: 40px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.07);
      flex-wrap: wrap;
    }
    .footer-desc {
      font-size: 14px;
      color: var(--color-text-secondary);
      max-width: 420px;
      line-height: 1.8;
    }
    .footer-social {
      display: flex;
      gap: 12px;
    }
    .footer-social a {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--color-text-secondary);
      font-size: 16px;
      transition: var(--transition);
    }
    .footer-social a:hover {
      background: rgba(30, 111, 255, 0.2);
      border-color: var(--color-brand-blue);
      color: var(--color-neon-teal);
    }
    .footer-col-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      padding: 40px 0;
    }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 18px;
      color: var(--color-text-primary);
    }
    .footer-col a {
      display: block;
      font-size: 13px;
      color: var(--color-text-secondary);
      padding: 6px 0;
      transition: var(--transition);
    }
    .footer-col a:hover {
      color: var(--color-brand-blue);
    }
    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 20px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 12px;
      color: var(--color-text-muted);
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer-bottom-links {
      display: flex;
      gap: 20px;
    }
    .footer-bottom-links a {
      color: var(--color-text-muted);
      font-size: 12px;
    }
    .footer-bottom-links a:hover {
      color: var(--color-brand-blue);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      :root {
        --section-gap: 56px;
      }
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .faq-layout {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .faq-left {
        position: static;
      }
      .cta-box {
        flex-direction: column;
        padding: 36px;
        text-align: center;
      }
    }

    @media (max-width: 720px) {
      :root {
        --section-gap: 40px;
      }
      .container {
        padding: 0 16px;
      }
      .nav-search,
      .btn-text {
        display: none;
      }
      .nav-toggle {
        display: flex;
      }
      .nav-channel {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 14, 28, 0.97);
        -webkit-backdrop-filter: blur(16px);
        backdrop-filter: blur(16px);
        border-top: 1px solid var(--color-border);
      }
      .nav-channel.open {
        display: block;
      }
      .nav-channel-inner {
        flex-direction: column;
      }
      .nav-item {
        border-left: none;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        width: 100%;
      }
      .nav-item.active::after {
        left: 16px;
        right: auto;
        width: 3px;
        height: auto;
        top: 50%;
        transform: translateY(-50%);
        bottom: auto;
      }
      .category-hero {
        padding: 48px 0;
        background-attachment: scroll;
      }
      .category-hero h1 {
        font-size: 32px;
      }
      .hero-desc {
        font-size: 15px;
      }
      .hero-actions {
        flex-direction: column;
        width: 100%;
      }
      .hero-actions .btn {
        width: 100%;
      }
      .hero-visual img {
        height: 220px;
      }
      .float-card {
        padding: 8px 14px;
        font-size: 13px;
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px 0;
      }
      .stat-item {
        border-left: none;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
      }
      .stat-item:nth-child(1),
      .stat-item:nth-child(2) {
        border-top: none;
      }
      .stat-num {
        font-size: 28px;
      }
      .stat-label {
        font-size: 13px;
      }
      .services-grid {
        grid-template-columns: 1fr;
        gap: 16px;
      }
      .scenarios-grid {
        grid-template-columns: 1fr;
        gap: 16px;
      }
      .workflow-grid {
        grid-template-columns: 1fr;
        gap: 16px;
      }
      .section-head h2 {
        font-size: 26px;
      }
      .section-head p {
        font-size: 14px;
      }
      .faq-question {
        font-size: 14px;
      }
      .footer-brand-row {
        flex-direction: column;
      }
      .footer-col-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
        justify-content: center;
      }
      .cta-box {
        padding: 28px 24px;
      }
      .cta-box h2 {
        font-size: 22px;
      }
      .cta-actions {
        flex-direction: column;
        width: 100%;
      }
      .cta-actions .btn {
        width: 100%;
      }
    }

    @media (max-width: 480px) {
      .topbar-inner span {
        font-size: 12px;
      }
      .topbar-inner a {
        font-size: 12px;
      }
      .logo-text {
        font-size: 18px;
      }
      .logo-icon {
        width: 34px;
        height: 34px;
        font-size: 14px;
      }
      .footer-col-grid {
        grid-template-columns: 1fr;
      }
    }

    /* ===== Focus / Accessibility ===== */
    a:focus-visible,
    button:focus-visible {
      outline: 2px solid var(--color-neon-teal);
      outline-offset: 2px;
      border-radius: 4px;
    }
    .btn:focus-visible {
      box-shadow: 0 0 0 3px rgba(25, 227, 200, 0.3);
    }

/* roulang page: category2 */
:root {
      --bg-primary: #0C1226;
      --bg-secondary: #0E1730;
      --bg-dark: #080D1A;
      --bg-card: rgba(255, 255, 255, 0.06);
      --bg-hover: rgba(255, 255, 255, 0.1);
      --brand-blue: #1E6FFF;
      --brand-blue-light: #4A8FFF;
      --accent-cyan: #19E3C8;
      --accent-orange: #FF7A1A;
      --accent-yellow: #CDED4F;
      --text-primary: #EAF0FF;
      --text-secondary: #A0AAC2;
      --text-muted: #6C7592;
      --border-light: rgba(255, 255, 255, 0.12);
      --radius-card: 16px;
      --radius-btn: 10px;
      --radius-tag: 20px;
      --shadow-card: 0 6px 24px rgba(0, 0, 0, 0.35);
      --shadow-float: 0 8px 40px rgba(0, 0, 0, 0.5);
      --glow-blue: 0 0 20px rgba(30, 111, 255, 0.45);
      --glow-orange: 0 0 26px rgba(255, 122, 26, 0.45);
      --transition: 0.25s ease;
      --font-cn: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "Helvetica Neue", sans-serif;
      --font-en: Inter, "DIN Alternate", "Helvetica Neue", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-cn);
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-primary);
      background: var(--bg-primary);
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: var(--brand-blue);
      text-decoration: none;
      transition: color var(--transition);
    }

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

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

    ul,
    ol {
      list-style: none;
    }

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

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .section-gap {
      padding: 80px 0;
    }

    /* Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 48px;
      padding: 0 32px;
      border-radius: var(--radius-btn);
      font-size: 15px;
      font-weight: 600;
      letter-spacing: 0.02em;
      cursor: pointer;
      transition: all var(--transition);
      border: 1px solid transparent;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--brand-blue);
      color: #fff;
      box-shadow: 0 0 12px rgba(30, 111, 255, 0.25);
    }

    .btn-primary:hover {
      background: var(--brand-blue-light);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: var(--glow-blue);
    }

    .btn-glow {
      box-shadow: var(--glow-blue);
    }

    .btn-glow:hover {
      box-shadow: var(--glow-orange);
    }

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

    .btn-outline:hover {
      background: rgba(30, 111, 255, 0.15);
      color: var(--text-primary);
      border-color: var(--accent-cyan);
      transform: translateY(-2px);
    }

    .btn-sm {
      height: 40px;
      padding: 0 22px;
      font-size: 14px;
    }

    .btn-block {
      width: 100%;
    }

    /* Section headers */
    .section-header {
      text-align: center;
      margin-bottom: 56px;
    }

    .section-header h2 {
      font-size: 32px;
      font-weight: 700;
      letter-spacing: 0.02em;
      color: var(--text-primary);
      position: relative;
      display: inline-block;
    }

    .section-header h2::after {
      content: "";
      display: block;
      width: 48px;
      height: 3px;
      background: linear-gradient(90deg, var(--brand-blue), var(--accent-cyan));
      border-radius: 3px;
      margin: 16px auto 0;
    }

    .section-header p {
      margin-top: 16px;
      color: var(--text-secondary);
      font-size: 16px;
      max-width: 720px;
      margin-left: auto;
      margin-right: auto;
    }

    /* Top ticker */
    .top-ticker {
      background: var(--bg-dark);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      height: 36px;
      display: flex;
      align-items: center;
      overflow: hidden;
    }

    .top-ticker .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }

    .ticker-text {
      font-size: 13px;
      color: var(--text-secondary);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .ticker-text a {
      color: var(--accent-cyan);
      margin-left: 6px;
    }

    .ticker-text a:hover {
      color: var(--accent-orange);
    }

    .ticker-date {
      font-size: 12px;
      color: var(--text-muted);
      white-space: nowrap;
    }

    /* Header */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 200;
      background: rgba(12, 18, 38, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .header-top {
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }

    .header-top-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

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

    .logo-icon {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--brand-blue), var(--accent-cyan));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: #fff;
      box-shadow: 0 4px 18px rgba(30, 111, 255, 0.35);
    }

    .logo-text {
      font-size: 20px;
      font-weight: 800;
      letter-spacing: 0.02em;
      color: var(--text-primary);
    }

    .logo-text span {
      color: var(--accent-cyan);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .search-btn {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      border: 1px solid var(--border-light);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-secondary);
      font-size: 15px;
      cursor: pointer;
      transition: all var(--transition);
      background: rgba(255, 255, 255, 0.04);
    }

    .search-btn:hover {
      border-color: var(--brand-blue);
      color: var(--brand-blue);
      background: rgba(30, 111, 255, 0.1);
    }

    /* Nav channel */
    .nav-channel {
      background: rgba(14, 23, 48, 0.6);
    }

    .nav-channel-inner {
      display: flex;
      align-items: center;
      height: 52px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      height: 100%;
    }

    .nav-item {
      display: inline-flex;
      align-items: center;
      height: 100%;
      padding: 0 26px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-secondary);
      position: relative;
      border-left: 1px solid rgba(255, 255, 255, 0.1);
      transition: all var(--transition);
    }

    .nav-item:first-child {
      border-left: none;
    }

    .nav-item:hover {
      color: var(--text-primary);
      background: rgba(255, 255, 255, 0.04);
    }

    .nav-item.active {
      color: var(--text-primary);
      background: linear-gradient(180deg, rgba(30, 111, 255, 0.2), transparent);
    }

    .nav-item.active::before {
      content: "";
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 24px;
      height: 3px;
      background: var(--brand-blue);
      border-radius: 3px 3px 0 0;
      box-shadow: var(--glow-blue);
    }

    .nav-item.active::after {
      content: "";
      position: absolute;
      bottom: 8px;
      left: 50%;
      transform: translateX(-50%);
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: var(--accent-cyan);
      box-shadow: 0 0 10px var(--accent-cyan);
    }

    .nav-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border-radius: 8px;
      border: 1px solid var(--border-light);
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-primary);
      font-size: 18px;
      cursor: pointer;
      align-items: center;
      justify-content: center;
      transition: all var(--transition);
    }

    .nav-toggle:hover {
      border-color: var(--brand-blue);
      background: rgba(30, 111, 255, 0.15);
    }

    /* Hero */
    .page-hero {
      position: relative;
      background: linear-gradient(90deg, rgba(12, 18, 38, 0.95) 0%, rgba(12, 18, 38, 0.8) 50%, rgba(14, 23, 48, 0.6) 100%), url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
      padding: 80px 0 90px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .hero-inner {
      display: flex;
      align-items: center;
      gap: 60px;
    }

    .hero-content {
      flex: 1 1 55%;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 6px 16px;
      border-radius: var(--radius-tag);
      background: rgba(30, 111, 255, 0.15);
      border: 1px solid rgba(30, 111, 255, 0.4);
      font-size: 13px;
      color: var(--accent-cyan);
      margin-bottom: 24px;
    }

    .hero-badge i {
      font-size: 12px;
    }

    .page-hero h1 {
      font-size: 44px;
      font-weight: 800;
      letter-spacing: 0.02em;
      line-height: 1.3;
      color: var(--text-primary);
      margin-bottom: 18px;
    }

    .page-hero h1 .highlight {
      background: linear-gradient(90deg, var(--brand-blue), var(--accent-cyan));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-desc {
      font-size: 18px;
      line-height: 1.8;
      color: var(--text-secondary);
      margin-bottom: 34px;
      max-width: 520px;
    }

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

    .hero-visual {
      flex: 1 1 45%;
      position: relative;
    }

    .hero-card {
      position: relative;
      border-radius: 20px;
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-float);
      background: rgba(255, 255, 255, 0.04);
    }

    .hero-card img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    .hero-card::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 55%, rgba(8, 13, 26, 0.7));
      pointer-events: none;
    }

    .float-card {
      position: absolute;
      background: rgba(14, 23, 48, 0.88);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      border: 1px solid var(--border-light);
      border-radius: 12px;
      padding: 12px 18px;
      box-shadow: var(--shadow-card);
      z-index: 2;
    }

    .float-card-top {
      top: 20px;
      right: 20px;
    }

    .float-card-bottom {
      bottom: 20px;
      left: 20px;
    }

    .float-card .fc-label {
      font-size: 12px;
      color: var(--text-muted);
      display: block;
      margin-bottom: 2px;
    }

    .float-card .fc-value {
      font-size: 22px;
      font-weight: 800;
      color: var(--accent-yellow);
      font-family: var(--font-en);
    }

    /* Marquee strip */
    .match-marquee {
      background: rgba(8, 13, 26, 0.8);
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      padding: 12px 0;
      overflow: hidden;
      white-space: nowrap;
    }

    .match-marquee-inner {
      display: inline-flex;
      gap: 48px;
      animation: marquee 22s linear infinite;
    }

    .match-marquee a {
      font-size: 13px;
      color: var(--text-secondary);
    }

    .match-marquee a i {
      color: var(--accent-orange);
      margin-right: 5px;
    }

    .match-marquee a:hover {
      color: var(--accent-cyan);
    }

    @keyframes marquee {
      0% { transform: translateX(0); }
      100% { transform: translateX(-50%); }
    }

    /* Stats bar */
    .stats-bar {
      background: var(--bg-secondary);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      padding: 48px 0;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0;
    }

    .stat-item {
      text-align: center;
      padding: 0 24px;
      border-left: 1px solid rgba(255, 255, 255, 0.1);
    }

    .stat-item:first-child {
      border-left: none;
    }

    .stat-number {
      font-family: var(--font-en);
      font-size: 36px;
      font-weight: 800;
      color: var(--accent-yellow);
      line-height: 1.3;
      transition: color var(--transition);
    }

    .stat-item:hover .stat-number {
      color: var(--brand-blue);
    }

    .stat-label {
      font-size: 14px;
      color: var(--text-secondary);
      margin-top: 6px;
    }

    .stat-en {
      font-size: 12px;
      color: var(--text-muted);
      font-family: var(--font-en);
      letter-spacing: 0.06em;
      text-transform: uppercase;
    }

    /* Feature cards */
    .features-section {
      background: var(--bg-primary);
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .feature-card {
      position: relative;
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      padding: 32px 28px;
      transition: all var(--transition);
      overflow: hidden;
    }

    .feature-card::before {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 3px;
      height: 0;
      background: var(--brand-blue);
      transition: height var(--transition);
    }

    .feature-card:hover {
      transform: translateY(-6px);
      border-color: rgba(255, 255, 255, 0.25);
      background: var(--bg-hover);
      box-shadow: var(--shadow-card);
    }

    .feature-card:hover::before {
      height: 100%;
    }

    .feature-num {
      position: absolute;
      top: 20px;
      right: 24px;
      font-family: var(--font-en);
      font-size: 44px;
      font-weight: 800;
      line-height: 1;
      color: rgba(255, 255, 255, 0.1);
      transition: color var(--transition);
    }

    .feature-card:hover .feature-num {
      color: rgba(30, 111, 255, 0.3);
    }

    .feature-tag {
      position: absolute;
      top: 20px;
      right: 70px;
      font-size: 12px;
      padding: 3px 10px;
      border-radius: var(--radius-tag);
      background: rgba(255, 122, 26, 0.15);
      border: 1px solid rgba(255, 122, 26, 0.4);
      color: var(--accent-orange);
      letter-spacing: 0.04em;
    }

    .feature-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(30, 111, 255, 0.25), rgba(25, 227, 200, 0.15));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      color: var(--accent-cyan);
      margin-bottom: 20px;
    }

    .feature-card h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 10px;
    }

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

    /* Scenes */
    .scenes-section {
      background: var(--bg-secondary);
    }

    .scene-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .scene-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      padding: 32px 26px;
      transition: all var(--transition);
      position: relative;
      overflow: hidden;
    }

    .scene-card::after {
      content: "";
      position: absolute;
      top: -40px;
      right: -40px;
      width: 100px;
      height: 100px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(25, 227, 200, 0.12), transparent 70%);
      transition: transform var(--transition);
    }

    .scene-card:hover {
      transform: translateY(-6px);
      border-color: rgba(30, 111, 255, 0.4);
      background: rgba(255, 255, 255, 0.08);
      box-shadow: var(--shadow-card);
    }

    .scene-card:hover::after {
      transform: scale(2);
    }

    .scene-icon {
      width: 56px;
      height: 56px;
      border-radius: 16px;
      background: linear-gradient(135deg, rgba(255, 122, 26, 0.2), rgba(25, 227, 200, 0.15));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      color: var(--accent-orange);
      margin-bottom: 18px;
    }

    .scene-card h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 10px;
    }

    .scene-card p {
      font-size: 14px;
      line-height: 1.7;
      color: var(--text-secondary);
      margin-bottom: 16px;
    }

    .scene-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .scene-tags span {
      font-size: 12px;
      padding: 4px 12px;
      border-radius: var(--radius-tag);
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.12);
      color: var(--text-secondary);
      transition: all var(--transition);
    }

    .scene-card:hover .scene-tags span {
      border-color: rgba(30, 111, 255, 0.3);
      color: var(--text-primary);
    }

    /* Steps */
    .steps-section {
      background: var(--bg-primary);
    }

    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      position: relative;
      counter-reset: step-counter;
    }

    .steps-grid::before {
      content: "";
      position: absolute;
      top: 32px;
      left: 8%;
      right: 8%;
      height: 1px;
      background: linear-gradient(90deg, var(--brand-blue), var(--accent-cyan), transparent);
      opacity: 0.5;
    }

    .step-item {
      text-align: center;
      position: relative;
      padding: 0 8px;
    }

    .step-dot {
      width: 64px;
      height: 64px;
      border-radius: 50%;
      background: var(--bg-secondary);
      border: 2px solid var(--brand-blue);
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 20px;
      font-family: var(--font-en);
      font-size: 22px;
      font-weight: 800;
      color: var(--brand-blue);
      position: relative;
      z-index: 1;
      box-shadow: 0 0 0 6px rgba(12, 18, 38, 1), 0 0 20px rgba(30, 111, 255, 0.25);
      transition: all var(--transition);
    }

    .step-item:hover .step-dot {
      border-color: var(--accent-cyan);
      color: var(--accent-cyan);
      box-shadow: 0 0 0 6px rgba(12, 18, 38, 1), 0 0 24px rgba(25, 227, 200, 0.3);
    }

    .step-item h3 {
      font-size: 17px;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 8px;
    }

    .step-item p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* Assurance */
    .assurance-section {
      background: var(--bg-secondary);
    }

    .assurance-inner {
      display: flex;
      align-items: center;
      gap: 60px;
    }

    .assurance-image {
      flex: 1 1 45%;
      position: relative;
    }

    .assurance-image img {
      border-radius: 20px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      height: 360px;
      width: 100%;
      object-fit: cover;
    }

    .assurance-float {
      position: absolute;
      bottom: 20px;
      left: 20px;
      background: rgba(14, 23, 48, 0.92);
      backdrop-filter: blur(8px);
      border: 1px solid var(--border-light);
      border-radius: 12px;
      padding: 12px 20px;
      box-shadow: var(--shadow-card);
    }

    .assurance-float .af-label {
      font-size: 12px;
      color: var(--text-muted);
    }

    .assurance-float .af-value {
      font-size: 20px;
      font-weight: 800;
      color: var(--accent-yellow);
      font-family: var(--font-en);
    }

    .assurance-list {
      flex: 1 1 55%;
    }

    .assurance-list h2 {
      font-size: 32px;
      font-weight: 700;
      letter-spacing: 0.02em;
      margin-bottom: 12px;
    }

    .assurance-sub {
      color: var(--text-secondary);
      margin-bottom: 32px;
      max-width: 480px;
    }

    .assurance-item {
      display: flex;
      gap: 18px;
      margin-bottom: 26px;
      padding: 20px 24px;
      border-radius: var(--radius-card);
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      transition: all var(--transition);
    }

    .assurance-item:hover {
      background: var(--bg-hover);
      border-color: rgba(30, 111, 255, 0.35);
      transform: translateX(4px);
    }

    .assurance-icon {
      width: 44px;
      height: 44px;
      flex-shrink: 0;
      border-radius: 12px;
      background: rgba(30, 111, 255, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: var(--brand-blue);
    }

    .assurance-item:nth-child(2) .assurance-icon {
      background: rgba(25, 227, 200, 0.12);
      color: var(--accent-cyan);
    }

    .assurance-item:nth-child(3) .assurance-icon {
      background: rgba(255, 122, 26, 0.12);
      color: var(--accent-orange);
    }

    .assurance-item h3 {
      font-size: 17px;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 4px;
    }

    .assurance-item p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* FAQ */
    .faq-section {
      background: var(--bg-primary);
    }

    .faq-inner {
      display: flex;
      gap: 60px;
      align-items: flex-start;
    }

    .faq-left {
      flex: 1 1 38%;
      position: sticky;
      top: 140px;
    }

    .faq-left h2 {
      font-size: 32px;
      font-weight: 700;
      letter-spacing: 0.02em;
      margin-bottom: 14px;
    }

    .faq-left p {
      color: var(--text-secondary);
      line-height: 1.8;
      margin-bottom: 28px;
    }

    .faq-left .btn {
      margin-top: 8px;
    }

    .faq-right {
      flex: 1 1 62%;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      margin-bottom: 16px;
      overflow: hidden;
      transition: all var(--transition);
    }

    .faq-item:hover {
      border-color: rgba(255, 255, 255, 0.22);
    }

    .faq-item.open {
      border-color: rgba(30, 111, 255, 0.4);
      background: rgba(30, 111, 255, 0.06);
    }

    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 18px 24px;
      cursor: pointer;
      font-size: 16px;
      font-weight: 500;
      color: var(--text-primary);
      transition: color var(--transition);
      user-select: none;
    }

    .faq-question:hover {
      color: var(--accent-cyan);
    }

    .faq-icon {
      width: 24px;
      height: 24px;
      border-radius: 6px;
      background: rgba(30, 111, 255, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 13px;
      color: var(--brand-blue);
      transition: transform var(--transition), background var(--transition);
      flex-shrink: 0;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      background: rgba(255, 122, 26, 0.15);
      color: var(--accent-orange);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
    }

    .faq-answer-inner {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 14px;
    }

    /* CTA */
    .cta-section {
      background: linear-gradient(135deg, rgba(12, 18, 38, 0.92), rgba(14, 23, 48, 0.88)), url("/assets/images/backpic/back-3.png") center/cover no-repeat;
      padding: 80px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    .cta-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 48px;
      flex-wrap: wrap;
    }

    .cta-text {
      flex: 1 1 55%;
    }

    .cta-text h2 {
      font-size: 32px;
      font-weight: 800;
      letter-spacing: 0.02em;
      margin-bottom: 14px;
    }

    .cta-text p {
      color: var(--text-secondary);
      font-size: 16px;
      margin-bottom: 28px;
      max-width: 500px;
    }

    .cta-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    .cta-contact {
      flex: 0 1 320px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-light);
      border-radius: 20px;
      padding: 28px 30px;
    }

    .cta-contact h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 16px;
      color: var(--text-primary);
    }

    .cta-contact li {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      color: var(--text-secondary);
      padding: 8px 0;
    }

    .cta-contact li i {
      width: 32px;
      height: 32px;
      border-radius: 8px;
      background: rgba(30, 111, 255, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--brand-blue);
      font-size: 14px;
    }

    /* Footer */
    .site-footer {
      background: var(--bg-dark);
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 64px 0 0;
    }

    .footer-brand-row {
      display: flex;
      align-items: flex-start;
      gap: 32px;
      padding-bottom: 40px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      flex-wrap: wrap;
    }

    .footer-desc {
      max-width: 520px;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
      flex: 1 1 320px;
    }

    .footer-social {
      display: flex;
      gap: 12px;
      margin-left: auto;
      align-items: center;
    }

    .footer-social a {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-secondary);
      font-size: 16px;
      transition: all var(--transition);
    }

    .footer-social a:hover {
      background: var(--brand-blue);
      color: #fff;
      border-color: var(--brand-blue);
      transform: translateY(-2px);
      box-shadow: var(--glow-blue);
    }

    .footer-col-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 40px;
      padding: 40px 0;
    }

    .footer-col h4 {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 18px;
      letter-spacing: 0.02em;
    }

    .footer-col a {
      display: block;
      font-size: 13px;
      color: var(--text-secondary);
      padding: 5px 0;
      transition: all var(--transition);
    }

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

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 20px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      flex-wrap: wrap;
      gap: 12px;
    }

    .copyright {
      font-size: 12px;
      color: var(--text-muted);
    }

    .footer-bottom-links {
      display: flex;
      gap: 20px;
    }

    .footer-bottom-links a {
      font-size: 12px;
      color: var(--text-muted);
    }

    .footer-bottom-links a:hover {
      color: var(--brand-blue);
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .hero-inner {
        flex-direction: column;
        gap: 40px;
      }

      .hero-content {
        flex: 1 1 100%;
        text-align: center;
      }

      .hero-desc {
        margin-left: auto;
        margin-right: auto;
      }

      .hero-buttons {
        justify-content: center;
      }

      .hero-visual {
        flex: 1 1 100%;
        max-width: 620px;
        margin: 0 auto;
        width: 100%;
      }

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

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

      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 24px;
      }

      .steps-grid::before {
        display: none;
      }

      .assurance-inner {
        flex-direction: column;
        gap: 40px;
      }

      .assurance-image {
        flex: 1 1 100%;
      }

      .assurance-list {
        flex: 1 1 100%;
      }

      .faq-inner {
        flex-direction: column;
        gap: 40px;
      }

      .faq-left {
        position: static;
        flex: 1 1 100%;
        text-align: center;
      }

      .faq-left p {
        margin-left: auto;
        margin-right: auto;
      }

      .faq-right {
        flex: 1 1 100%;
      }

      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px 0;
      }

      .stat-item:nth-child(3) {
        border-left: none;
      }

      .stat-item {
        padding: 12px;
      }

      .footer-col-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
      }
    }

    @media (max-width: 720px) {
      .container {
        padding: 0 16px;
      }

      .section-gap {
        padding: 40px 0;
      }

      .section-header {
        margin-bottom: 32px;
      }

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

      .top-ticker {
        height: 32px;
      }

      .ticker-date {
        display: none;
      }

      .header-top-inner {
        height: 60px;
      }

      .logo-text {
        font-size: 18px;
      }

      .nav-channel-inner {
        height: auto;
        padding: 10px 0;
      }

      .nav-links {
        display: none;
        flex-direction: column;
        height: auto;
        background: rgba(14, 23, 48, 0.98);
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        border-bottom: 1px solid var(--border-light);
        padding: 8px 0;
        z-index: 199;
      }

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

      .nav-item {
        width: 100%;
        height: 46px;
        border-left: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        padding: 0 20px;
      }

      .nav-item.active::before,
      .nav-item.active::after {
        display: none;
      }

      .nav-item.active {
        background: rgba(30, 111, 255, 0.15);
        color: var(--accent-cyan);
      }

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

      .page-hero {
        padding: 48px 0 56px;
      }

      .page-hero h1 {
        font-size: 30px;
      }

      .hero-desc {
        font-size: 16px;
        margin-bottom: 24px;
      }

      .btn {
        height: 44px;
        padding: 0 24px;
        font-size: 14px;
      }

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

      .float-card {
        padding: 10px 14px;
      }

      .float-card .fc-value {
        font-size: 18px;
      }

      .stats-bar {
        padding: 32px 0;
      }

      .stat-number {
        font-size: 28px;
      }

      .stat-label {
        font-size: 13px;
      }

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

      .feature-card {
        padding: 24px 20px;
      }

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

      .scene-card {
        padding: 24px 20px;
      }

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

      .step-item {
        display: flex;
        align-items: flex-start;
        text-align: left;
        gap: 18px;
      }

      .step-dot {
        margin: 4px 0 0;
        flex-shrink: 0;
        width: 48px;
        height: 48px;
        font-size: 18px;
      }

      .assurance-item {
        padding: 16px 18px;
      }

      .assurance-image img {
        height: 220px;
      }

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

      .cta-text h2 {
        font-size: 24px;
      }

      .cta-contact {
        flex: 1 1 100%;
        width: 100%;
      }

      .footer-brand-row {
        flex-direction: column;
        gap: 16px;
      }

      .footer-social {
        margin-left: 0;
      }

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

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

      .footer-bottom-links {
        gap: 16px;
      }
    }

/* roulang page: category3 */
:root {
      --bg-deep: #0C1226;
      --bg-deep-2: #0E1730;
      --bg-panel: rgba(255, 255, 255, 0.06);
      --bg-panel-hover: rgba(255, 255, 255, 0.10);
      --border: rgba(255, 255, 255, 0.12);
      --brand: #1E6FFF;
      --brand-hover: #3A82FF;
      --cyan: #19E3C8;
      --orange: #FF7A1A;
      --lime: #CDED4F;
      --text: #EAF0FF;
      --text-secondary: #A0AAC2;
      --text-muted: #6C7592;
      --radius: 16px;
      --radius-sm: 10px;
      --shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
      --glow: 0 0 20px rgba(30, 111, 255, 0.45);
      --section-gap: 80px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "Inter", "DIN Alternate", sans-serif;
      background: var(--bg-deep);
      color: var(--text);
      line-height: 1.7;
      overflow-x: hidden;
      letter-spacing: 0.01em;
    }

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

    a {
      color: var(--brand);
      text-decoration: none;
      transition: all 0.25s ease;
    }

    a:hover {
      color: var(--brand-hover);
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
      color: var(--text);
      line-height: 1.3;
      letter-spacing: 0.02em;
    }

    button,
    input,
    textarea {
      font: inherit;
      color: inherit;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .section {
      padding: var(--section-gap) 0;
    }

    .section-head {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 48px;
    }

    .section-head h2 {
      font-size: 32px;
      font-weight: 800;
      margin: 14px 0 14px;
    }

    .section-head p {
      color: var(--text-secondary);
      font-size: 16px;
      line-height: 1.8;
    }

    .section-kicker {
      display: inline-block;
      font-size: 13px;
      letter-spacing: 0.12em;
      color: var(--cyan);
      text-transform: uppercase;
      border: 1px solid rgba(25, 227, 200, 0.3);
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 14px;
      background: rgba(25, 227, 200, 0.08);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 48px;
      padding: 0 32px;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 600;
      border: none;
      cursor: pointer;
      transition: all 0.25s ease;
      text-decoration: none;
      line-height: 1;
    }

    .btn-primary {
      background: var(--brand);
      color: #fff;
    }

    .btn-primary:hover {
      background: var(--brand-hover);
      box-shadow: 0 0 24px rgba(30, 111, 255, 0.5);
      transform: translateY(-2px);
      color: #fff;
    }

    .btn-outline {
      background: transparent;
      color: var(--text);
      border: 1px solid var(--brand);
    }

    .btn-outline:hover {
      background: rgba(30, 111, 255, 0.15);
      color: var(--text);
    }

    .btn-glow {
      box-shadow: 0 0 20px rgba(30, 111, 255, 0.45);
    }

    .btn-glow:hover {
      box-shadow: 0 0 26px rgba(255, 122, 26, 0.45);
    }

    .btn-sm {
      height: 38px;
      padding: 0 20px;
      font-size: 14px;
    }

    /* Header */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(12, 18, 38, 0.86);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .header-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }

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

    .logo-icon {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--brand), #0E97FF);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 18px;
      box-shadow: 0 0 18px rgba(30, 111, 255, 0.4);
    }

    .logo-text {
      font-size: 22px;
      font-weight: 800;
      letter-spacing: 0.02em;
      color: var(--text);
    }

    .logo-text span {
      color: var(--brand);
    }

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

    .header-search {
      position: relative;
    }

    .header-search input {
      width: 200px;
      height: 38px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid var(--border);
      border-radius: 20px;
      padding: 0 40px 0 14px;
      color: var(--text);
      outline: none;
      transition: all 0.25s ease;
    }

    .header-search input::placeholder {
      color: var(--text-muted);
    }

    .header-search input:focus {
      border-color: var(--brand);
      box-shadow: 0 0 0 3px rgba(30, 111, 255, 0.2);
      width: 240px;
    }

    .header-search i {
      position: absolute;
      right: 14px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-muted);
      pointer-events: none;
    }

    .menu-toggle {
      display: none;
      width: 40px;
      height: 40px;
      border: 1px solid var(--border);
      background: rgba(255, 255, 255, 0.06);
      border-radius: 8px;
      color: var(--text);
      font-size: 16px;
      cursor: pointer;
      align-items: center;
      justify-content: center;
    }

    .nav-wrap {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      position: relative;
    }

    .nav-channel {
      display: flex;
      align-items: center;
    }

    .nav-item {
      display: flex;
      align-items: center;
      height: 48px;
      padding: 0 24px;
      color: var(--text-secondary);
      font-size: 15px;
      font-weight: 500;
      position: relative;
      transition: all 0.25s ease;
      border-right: 1px solid rgba(255, 255, 255, 0.08);
    }

    .nav-item:first-child {
      border-left: 1px solid rgba(255, 255, 255, 0.08);
    }

    .nav-item:hover {
      color: var(--text);
      background: rgba(255, 255, 255, 0.04);
    }

    .nav-item.active {
      color: #fff;
      background: rgba(30, 111, 255, 0.22);
      box-shadow: inset 0 -2px 0 var(--brand);
    }

    .nav-item.active::after {
      content: '';
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      bottom: 6px;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--cyan);
      box-shadow: 0 0 8px var(--cyan);
    }

    /* Hero */
    .category-hero {
      position: relative;
      background: linear-gradient(90deg, rgba(12, 18, 38, 0.96) 0%, rgba(12, 18, 38, 0.82) 50%, rgba(12, 18, 38, 0.55) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      padding: 80px 0;
      border-bottom: 1px solid var(--border);
    }

    .hero-inner {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 600;
      color: var(--cyan);
      background: rgba(25, 227, 200, 0.12);
      border: 1px solid rgba(25, 227, 200, 0.3);
      padding: 6px 16px;
      border-radius: 20px;
    }

    .category-hero h1 {
      font-size: 44px;
      font-weight: 800;
      margin: 18px 0 14px;
      letter-spacing: 0.02em;
    }

    .hero-sub {
      font-size: 18px;
      color: var(--text-secondary);
      line-height: 1.8;
      max-width: 520px;
      margin-bottom: 28px;
    }

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

    .hero-visual {
      position: relative;
    }

    .hero-img {
      border-radius: 20px;
      box-shadow: var(--shadow);
      border: 1px solid var(--border);
      width: 100%;
      min-height: 260px;
      object-fit: cover;
    }

    .float-card {
      position: absolute;
      background: rgba(255, 255, 255, 0.10);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.18);
      border-radius: 12px;
      padding: 10px 16px;
      font-size: 14px;
      font-weight: 600;
      color: #fff;
      box-shadow: var(--shadow);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .fc-top {
      top: -14px;
      right: 8px;
    }

    .fc-bottom {
      bottom: -14px;
      left: 8px;
      background: rgba(30, 111, 255, 0.25);
    }

    /* Stats */
    .stats-bar {
      background: var(--bg-deep-2);
      border-bottom: 1px solid var(--border);
    }

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

    .stat-item {
      text-align: center;
      padding: 32px 16px;
      border-right: 1px solid rgba(255, 255, 255, 0.10);
      transition: all 0.2s ease;
    }

    .stat-item:last-child {
      border-right: none;
    }

    .stat-item:hover .stat-number {
      color: var(--brand);
    }

    .stat-number {
      font-size: 34px;
      font-weight: 800;
      color: var(--lime);
      font-family: "Inter", "DIN Alternate", sans-serif;
      transition: color 0.2s ease;
    }

    .stat-label {
      color: var(--text-secondary);
      font-size: 14px;
      margin-top: 6px;
    }

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

    .feature-card {
      position: relative;
      background: var(--bg-panel);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 28px;
      transition: all 0.25s ease;
      overflow: hidden;
      height: 100%;
    }

    .feature-card:hover {
      transform: translateY(-6px);
      border-color: rgba(30, 111, 255, 0.6);
      background: var(--bg-panel-hover);
      box-shadow: var(--shadow);
    }

    .feature-card::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 0;
      height: 3px;
      background: var(--brand);
      transition: width 0.3s ease;
    }

    .feature-card:hover::after {
      width: 100%;
    }

    .feature-num {
      position: absolute;
      top: 14px;
      right: 20px;
      font-size: 36px;
      font-weight: 800;
      color: rgba(255, 255, 255, 0.08);
      font-family: "Inter", "DIN Alternate", sans-serif;
    }

    .feature-badge {
      position: absolute;
      top: 16px;
      right: 20px;
      font-size: 12px;
      padding: 3px 12px;
      border-radius: 20px;
      background: var(--orange);
      color: #fff;
      z-index: 2;
      font-weight: 600;
    }

    .feature-badge.new {
      background: var(--cyan);
      color: #0C1226;
    }

    .feature-icon {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: rgba(30, 111, 255, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--brand);
      font-size: 18px;
      margin-bottom: 16px;
    }

    .feature-card h3 {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 8px;
    }

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

    /* Advantage */
    .advantage-section {
      background: var(--bg-deep-2);
    }

    .advantage-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }

    .adv-item {
      display: flex;
      gap: 18px;
      padding: 20px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .adv-item:last-child {
      border-bottom: none;
    }

    .adv-icon {
      width: 48px;
      height: 48px;
      flex: 0 0 48px;
      border-radius: 12px;
      background: rgba(25, 227, 200, 0.12);
      border: 1px solid rgba(25, 227, 200, 0.25);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--cyan);
      font-size: 18px;
    }

    .adv-content h3 {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 6px;
    }

    .adv-content p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
    }

    .advantage-visual {
      position: relative;
    }

    .adv-img {
      border-radius: 20px;
      box-shadow: var(--shadow);
      border: 1px solid var(--border);
      width: 100%;
      min-height: 320px;
      object-fit: cover;
    }

    .fc-adv {
      bottom: -16px;
      left: 24px;
      background: rgba(12, 18, 38, 0.7);
    }

    /* Scenario */
    .scenario-section {
      background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-deep-2) 100%);
    }

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

    .scenario-card {
      background: linear-gradient(180deg, #101C3A, #0E1730);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 24px;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
    }

    .scenario-card:hover {
      border-color: var(--cyan);
      transform: translateY(-4px);
      box-shadow: var(--shadow);
    }

    .scenario-img {
      border-radius: 12px;
      width: 100%;
      height: 150px;
      object-fit: cover;
      margin-bottom: 18px;
      border: 1px solid var(--border);
    }

    .scenario-card h3 {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .scenario-card p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
      flex: 1;
    }

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

    .tag {
      display: inline-block;
      padding: 4px 12px;
      background: rgba(25, 227, 200, 0.12);
      border: 1px solid rgba(25, 227, 200, 0.25);
      border-radius: 20px;
      font-size: 12px;
      color: var(--cyan);
    }

    .scenario-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--brand);
      font-size: 14px;
      font-weight: 600;
      margin-top: 18px;
    }

    .scenario-link:hover {
      color: var(--brand-hover);
      gap: 10px;
    }

    /* Process */
    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .step-card {
      text-align: center;
      padding: 32px 16px;
      background: var(--bg-panel);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      transition: all 0.25s ease;
    }

    .step-card:hover {
      border-color: rgba(30, 111, 255, 0.5);
      transform: translateY(-4px);
    }

    .step-num {
      width: 56px;
      height: 56px;
      margin: 0 auto 16px;
      border-radius: 50%;
      background: rgba(30, 111, 255, 0.15);
      border: 1px solid rgba(30, 111, 255, 0.4);
      color: var(--brand);
      font-size: 22px;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: "Inter", sans-serif;
    }

    .step-card h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 8px;
    }

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

    /* Testimonials */
    .testimonials-section {
      background: var(--bg-deep-2);
    }

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

    .testimonial-card {
      background: var(--bg-panel);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 28px;
      transition: all 0.25s ease;
    }

    .testimonial-card:hover {
      border-color: rgba(255, 255, 255, 0.22);
      transform: translateY(-4px);
    }

    .stars {
      color: var(--orange);
      font-size: 14px;
      letter-spacing: 2px;
      margin-bottom: 12px;
    }

    .testimonial-card blockquote {
      font-size: 15px;
      color: var(--text);
      line-height: 1.8;
      border: none;
      margin: 0 0 14px;
      padding: 0;
    }

    .testimonial-card cite {
      font-style: normal;
      font-size: 13px;
      color: var(--text-muted);
    }

    /* FAQ */
    .faq-layout {
      display: grid;
      grid-template-columns: 0.8fr 1.4fr;
      gap: 48px;
      align-items: start;
    }

    .faq-side h2 {
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .faq-side p {
      color: var(--text-secondary);
      font-size: 15px;
      line-height: 1.8;
      margin-bottom: 24px;
    }

    .faq-item {
      border: 1px solid var(--border);
      border-radius: 12px;
      background: var(--bg-panel);
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color 0.25s ease;
    }

    .faq-item:hover {
      border-color: rgba(255, 255, 255, 0.22);
    }

    .faq-item.open {
      border-color: rgba(30, 111, 255, 0.5);
    }

    .faq-q {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 20px;
      cursor: pointer;
      color: var(--text);
      font-weight: 600;
      font-size: 15px;
      user-select: none;
    }

    .faq-q i {
      transition: transform 0.25s ease;
      color: var(--text-muted);
      font-size: 14px;
    }

    .faq-item.open .faq-q i {
      transform: rotate(45deg);
      color: var(--brand);
    }

    .faq-a {
      display: none;
      padding: 0 20px 18px;
      color: var(--text-secondary);
      font-size: 14px;
      line-height: 1.8;
    }

    /* CTA */
    .cta-section {
      background: var(--bg-deep-2);
    }

    .cta-box {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      background: linear-gradient(135deg, #101C3A, #0E1730);
      border: 1px solid var(--border);
      border-radius: 20px;
      padding: 48px;
    }

    .cta-info h2 {
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .cta-info p {
      color: var(--text-secondary);
      font-size: 15px;
      line-height: 1.8;
      margin-bottom: 24px;
    }

    .contact-list {
      list-style: none;
      display: grid;
      gap: 12px;
      margin: 0;
    }

    .contact-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: var(--text-secondary);
    }

    .contact-list i {
      color: var(--brand);
      width: 20px;
      text-align: center;
    }

    .cta-form h3 {
      font-size: 20px;
      font-weight: 600;
      margin-bottom: 20px;
    }

    .form-tip {
      display: none;
      padding: 10px 14px;
      border-radius: 8px;
      font-size: 14px;
      margin-bottom: 16px;
      line-height: 1.6;
    }

    .form-tip.success {
      background: rgba(47, 208, 141, 0.15);
      border: 1px solid rgba(47, 208, 141, 0.4);
      color: #2FD08D;
    }

    .form-tip.error {
      background: rgba(255, 122, 26, 0.15);
      border: 1px solid rgba(255, 122, 26, 0.4);
      color: var(--orange);
    }

    .form-group {
      margin-bottom: 16px;
    }

    .form-group label {
      display: block;
      font-size: 13px;
      color: var(--text);
      margin-bottom: 6px;
    }

    .form-group input,
    .form-group textarea {
      width: 100%;
      height: 44px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.14);
      border-radius: 8px;
      color: var(--text);
      padding: 0 14px;
      outline: none;
      transition: all 0.25s ease;
    }

    .form-group textarea {
      height: auto;
      padding: 12px 14px;
      resize: vertical;
      line-height: 1.6;
    }

    .form-group input:focus,
    .form-group textarea:focus {
      border-color: var(--brand);
      box-shadow: 0 0 0 3px rgba(30, 111, 255, 0.2);
    }

    .form-group input::placeholder,
    .form-group textarea::placeholder {
      color: var(--text-muted);
    }

    /* Footer */
    .site-footer {
      background: #080D1A;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 64px 0 28px;
    }

    .site-footer .logo {
      margin-bottom: 8px;
    }

    .footer-desc {
      color: var(--text-secondary);
      font-size: 14px;
      line-height: 1.8;
      max-width: 480px;
      margin: 8px 0 20px;
    }

    .footer-social {
      display: flex;
      gap: 12px;
    }

    .footer-social a {
      width: 40px;
      height: 40px;
      border: 1px solid var(--border);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-secondary);
      font-size: 16px;
      transition: all 0.25s ease;
    }

    .footer-social a:hover {
      color: var(--brand);
      border-color: var(--brand);
      background: rgba(30, 111, 255, 0.1);
    }

    .footer-col-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      padding: 32px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      margin-top: 32px;
    }

    .footer-col h4 {
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 14px;
      color: var(--text);
    }

    .footer-col a {
      display: block;
      font-size: 13px;
      color: var(--text-secondary);
      padding: 5px 0;
      transition: color 0.2s ease;
    }

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

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding-top: 24px;
      flex-wrap: wrap;
    }

    .copyright {
      font-size: 12px;
      color: var(--text-muted);
    }

    .footer-bottom-links {
      display: flex;
      gap: 18px;
    }

    .footer-bottom-links a {
      font-size: 12px;
      color: var(--text-muted);
    }

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

    /* Responsive */
    @media (max-width: 1024px) {
      .hero-inner {
        grid-template-columns: 1fr;
      }

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

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

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

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

      .cta-box {
        grid-template-columns: 1fr;
        padding: 36px;
      }

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

      .header-search input {
        width: 150px;
      }

      .header-search input:focus {
        width: 180px;
      }
    }

    @media (max-width: 720px) {
      :root {
        --section-gap: 40px;
      }

      .container {
        padding: 0 16px;
      }

      .menu-toggle {
        display: flex;
      }

      .header-search input {
        display: none;
      }

      .header-search i {
        position: static;
        font-size: 18px;
      }

      .nav-wrap {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(12, 18, 38, 0.98);
        border-top: 1px solid var(--border);
        display: none;
        box-shadow: 0 16px 30px rgba(0, 0, 0, 0.4);
      }

      .nav-wrap.open {
        display: block;
      }

      .nav-channel {
        flex-direction: column;
        align-items: stretch;
        padding: 12px 16px;
      }

      .nav-item {
        border: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        height: 44px;
        justify-content: flex-start;
        margin: 0;
      }

      .nav-item:first-child {
        border-left: none;
      }

      .nav-item.active {
        background: rgba(30, 111, 255, 0.18);
      }

      .category-hero {
        padding: 56px 0;
      }

      .category-hero h1 {
        font-size: 32px;
      }

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

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

      .stat-item:nth-child(2) {
        border-right: none;
      }

      .stat-item:nth-child(1),
      .stat-item:nth-child(2) {
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      }

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

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

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

      .cta-box {
        padding: 28px 20px;
        gap: 32px;
      }

      .footer-col-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
      }

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

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

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

      .float-card {
        font-size: 13px;
        padding: 8px 12px;
      }

      .fc-top {
        top: -10px;
      }

      .fc-bottom {
        bottom: -10px;
      }
    }

    @media (max-width: 520px) {
      .logo-text {
        font-size: 18px;
      }

      .btn {
        padding: 0 20px;
      }

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

      .section-head h2 {
        font-size: 26px;
      }

      .stat-number {
        font-size: 28px;
      }
    }