/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --bg-deep: #071A26;
  --bg-mid: #0B2236;
  --bg-footer: #050F18;
  --brand: #0F3D5C;
  --accent: #22D3EE;
  --action: #FF7849;
  --success: #34D399;
  --warning: #FBBF24;
  --text-main: #E6F2FF;
  --text-sub: #94A9C2;
  --text-weak: #5C7A99;
  --border: rgba(255,255,255,0.08);
  --glass-bg: rgba(255,255,255,0.06);
  --card-bg: rgba(255,255,255,0.04);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.35);
  --shadow-glow: 0 0 24px rgba(34,211,238,0.15);
  --font-body: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Helvetica Neue", Arial, sans-serif;
  --font-num: "DIN Alternate", "Inter", "Bahnschrift", sans-serif;
  --container: 1200px;
  --space-section: 96px;
  --space-section-md: 64px;
  --space-section-sm: 48px;
}
/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
body {
  font-family: var(--font-body);
  background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-mid) 50%, #0D2A3F 100%);
  background-attachment: fixed;
  color: var(--text-main);
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; transition: color 0.25s, opacity 0.25s; }
a:hover { color: #7FE4F8; text-decoration: underline; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; font-size: 15px; color: var(--text-main); }
ul, ol { list-style: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
/* ===== 容器 ===== */
.container { width: min(var(--container), 92%); margin-inline: auto; }
/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px; border-radius: 999px; font-size: 15px; font-weight: 600;
  line-height: 1.2; border: 1px solid transparent; transition: all 0.28s ease;
  text-decoration: none; white-space: nowrap; letter-spacing: 0.2px;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn:active { transform: translateY(0) scale(0.98); }
.btn-primary {
  background: linear-gradient(135deg, #FF9470 0%, var(--action) 50%, #F56A3B 100%);
  color: #fff; box-shadow: 0 4px 20px rgba(255,120,73,0.35);
}
.btn-primary:hover { color: #fff; box-shadow: 0 6px 30px rgba(255,120,73,0.55); filter: brightness(1.08); }
.btn-primary:active { filter: brightness(0.95); box-shadow: 0 2px 12px rgba(255,120,73,0.3); }
.btn-outline {
  background: rgba(34,211,238,0.06); color: var(--accent);
  border-color: rgba(34,211,238,0.5); backdrop-filter: blur(4px);
}
.btn-outline:hover { background: rgba(34,211,238,0.14); color: #7FE4F8; border-color: var(--accent); box-shadow: 0 0 20px rgba(34,211,238,0.15); }
/* ===== 导航 ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: 72px; background: linear-gradient(180deg, rgba(7,26,38,0.92), rgba(7,26,38,0.75));
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border); transition: background 0.3s, box-shadow 0.3s;
}
.site-header.scrolled { background: rgba(7,26,38,0.96); box-shadow: 0 8px 30px rgba(0,0,0,0.3); }
.header-inner { height: 72px; display: flex; align-items: center; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo svg { flex-shrink: 0; }
.logo-text {
  font-size: 18px; font-weight: 700; color: var(--text-main); white-space: nowrap;
  letter-spacing: 0.5px; display: flex; align-items: center; gap: 8px;
}
.logo-text::after {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--success); box-shadow: 0 0 10px var(--success); display: inline-block;
}
.main-nav { display: flex; align-items: center; gap: 4px; margin-left: 12px; flex: 1; }
.main-nav a {
  color: var(--text-sub); font-size: 15px; font-weight: 500; padding: 8px 16px;
  border-radius: 999px; transition: all 0.25s; text-decoration: none; position: relative; white-space: nowrap;
}
.main-nav a:hover { color: var(--text-main); background: rgba(34,211,238,0.08); text-decoration: none; }
.main-nav a.active { color: var(--accent); background: rgba(34,211,238,0.12); }
.main-nav a.active::after {
  content: ""; position: absolute; left: 20px; right: 20px; bottom: 2px;
  height: 2px; background: var(--accent); border-radius: 2px; box-shadow: 0 0 8px var(--accent);
}
.header-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.header-search {
  position: relative; display: flex; align-items: center;
}
.header-search input {
  width: 200px; height: 40px; padding: 0 14px 0 36px; border-radius: 999px;
  background: rgba(255,255,255,0.05); border: 1px solid var(--border); color: var(--text-main);
  font-size: 14px; transition: all 0.3s; outline: none;
}
.header-search input::placeholder { color: var(--text-weak); }
.header-search input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(34,211,238,0.12); width: 230px; }
.header-search svg { position: absolute; left: 12px; width: 16px; height: 16px; stroke: var(--text-weak); pointer-events: none; }
.header-login {
  color: var(--text-sub); font-size: 14px; font-weight: 500; padding: 8px 6px;
  transition: color 0.25s; text-decoration: none; white-space: nowrap;
}
.header-login:hover { color: var(--accent); text-decoration: none; }
.header-register { padding: 9px 20px; font-size: 14px; }
.burger { display: none; width: 40px; height: 40px; border-radius: 10px; align-items: center; justify-content: center; border: 1px solid var(--border); background: rgba(255,255,255,0.04); }
.burger span { display: block; width: 20px; height: 2px; background: var(--text-main); border-radius: 2px; position: relative; transition: all 0.3s; }
.burger span::before, .burger span::after { content: ""; position: absolute; left: 0; width: 20px; height: 2px; background: var(--text-main); border-radius: 2px; transition: all 0.3s; }
.burger span::before { top: -6px; }
.burger span::after { top: 6px; }
.burger.open span { background: transparent; }
.burger.open span::before { top: 0; transform: rotate(45deg); }
.burger.open span::after { top: 0; transform: rotate(-45deg); }
/* 移动端导航抽屉 */
.mobile-menu {
  display: none; position: fixed; top: 72px; left: 0; right: 0; z-index: 999;
  background: rgba(7,26,38,0.97); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border); padding: 24px 0 32px;
}
.mobile-menu.open { display: block; }
.mobile-menu-inner { width: min(var(--container), 92%); margin-inline: auto; }
.mobile-nav { display: flex; flex-direction: column; gap: 4px; }
.mobile-nav a {
  color: var(--text-main); font-size: 17px; font-weight: 500; padding: 14px 16px;
  border-radius: 12px; text-decoration: none; transition: background 0.2s;
}
.mobile-nav a:hover { background: rgba(34,211,238,0.08); text-decoration: none; }
.mobile-nav a.active { background: rgba(34,211,238,0.12); color: var(--accent); }
.mobile-search { margin-bottom: 16px; position: relative; }
.mobile-search input {
  width: 100%; height: 46px; padding: 0 16px 0 42px; border-radius: 12px;
  background: rgba(255,255,255,0.06); border: 1px solid var(--border); color: var(--text-main); outline: none;
}
.mobile-search input:focus { border-color: var(--accent); }
.mobile-search svg { position: absolute; left: 14px; top: 15px; width: 17px; height: 17px; stroke: var(--text-weak); }
.mobile-cta { display: flex; gap: 12px; margin-top: 16px; }
.mobile-cta .btn { flex: 1; }
/* ===== Hero ===== */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  padding: 140px 0 80px; overflow: hidden;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover; background-position: center; background-repeat: no-repeat;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(7,26,38,0.82) 0%, rgba(7,26,38,0.65) 40%, rgba(7,26,38,0.9) 100%);
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 70% 40%, rgba(34,211,238,0.10) 0%, transparent 60%);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 16px;
  border-radius: 999px; background: rgba(34,211,238,0.12); border: 1px solid rgba(34,211,238,0.25);
  color: var(--accent); font-size: 13px; font-weight: 500; margin-bottom: 20px;
}
.hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--success); box-shadow: 0 0 8px var(--success); }
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 800; line-height: 1.22;
  color: var(--text-main); letter-spacing: 0.5px; margin-bottom: 20px;
}
.hero h1 .highlight { color: var(--accent); }
.hero-sub {
  font-size: 17px; line-height: 1.8; color: var(--text-sub); max-width: 540px;
  margin-bottom: 28px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 36px; }
.hero-trust { display: flex; gap: 12px; flex-wrap: wrap; }
.trust-item {
  display: inline-flex; align-items: center; gap: 6px; font-size: 13px;
  color: var(--text-sub); padding: 6px 14px; border-radius: 999px;
  background: rgba(255,255,255,0.04); border: 1px solid var(--border);
}
.trust-item svg { width: 14px; height: 14px; stroke: var(--success); }
/* Hero 右卡 */
.hero-visual { position: relative; display: flex; justify-content: center; }
.hero-card {
  width: min(420px, 100%); border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: var(--shadow-lg); padding: 36px 32px; position: relative; overflow: hidden;
}
.hero-card::before {
  content: ""; position: absolute; top: -80px; right: -80px; width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(34,211,238,0.18) 0%, transparent 70%);
  pointer-events: none;
}
.hero-card-title { font-size: 20px; font-weight: 700; margin-bottom: 4px; display: flex; align-items: center; gap: 10px; }
.hero-card-title svg { width: 22px; height: 22px; stroke: var(--accent); }
.hero-card-desc { font-size: 14px; color: var(--text-sub); margin-bottom: 24px; }
.hero-card .form-row { margin-bottom: 14px; }
.hero-card label { display: block; font-size: 13px; color: var(--text-sub); margin-bottom: 6px; font-weight: 500; }
.hero-card input {
  width: 100%; height: 42px; padding: 0 14px; border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.05); border: 1px solid var(--border);
  color: var(--text-main); outline: none; transition: all 0.3s; font-size: 14px;
}
.hero-card input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(34,211,238,0.1); }
.hero-card .btn { width: 100%; margin-top: 8px; }
.hero-card-note { font-size: 12px; color: var(--text-weak); text-align: center; margin-top: 12px; display: flex; align-items: center; justify-content: center; gap: 6px; }
.hero-card-note svg { width: 13px; height: 13px; stroke: var(--success); }
/* ===== 区块标题 ===== */
.section { padding: var(--space-section) 0; position: relative; }
.section-head { margin-bottom: 48px; }
.section-tag {
  display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600;
  color: var(--accent); letter-spacing: 1px; margin-bottom: 12px;
}
.section-tag::before { content: ""; width: 24px; height: 2px; background: var(--accent); border-radius: 2px; box-shadow: 0 0 8px var(--accent); }
.section-head h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem); font-weight: 800; color: var(--text-main);
  line-height: 1.3; margin-bottom: 10px; position: relative;
}
.section-head h2::after {
  content: ""; display: block; width: 80px; height: 3px; border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), transparent); margin-top: 10px;
}
.section-desc { font-size: 15px; color: var(--text-sub); max-width: 640px; line-height: 1.7; }
/* ===== Bento 服务 ===== */
.bento-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 20px; }
.bento-card {
  border-radius: var(--radius-md); background: rgba(255,255,255,0.04);
  border: 1px solid var(--border); padding: 32px 28px; position: relative;
  overflow: hidden; transition: all 0.35s ease;
}
.bento-card:hover { border-color: rgba(34,211,238,0.45); box-shadow: var(--shadow-glow), var(--shadow-lg); transform: translateY(-4px); }
.bento-card::after {
  content: ""; position: absolute; bottom: -60px; right: -50px; width: 160px; height: 160px;
  border-radius: 50%; background: radial-gradient(circle, rgba(34,211,238,0.06), transparent 70%);
  pointer-events: none;
}
.bento-col-7 { grid-column: span 7; }
.bento-col-5 { grid-column: span 5; }
.bento-col-12 { grid-column: span 12; }
.bento-icon {
  width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  background: rgba(34,211,238,0.12); border: 1px solid rgba(34,211,238,0.2); margin-bottom: 20px;
}
.bento-icon svg { width: 24px; height: 24px; stroke: var(--accent); }
.bento-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; color: var(--text-main); }
.bento-card p { font-size: 14px; color: var(--text-sub); line-height: 1.7; margin-bottom: 16px; }
.bento-link { font-size: 14px; font-weight: 500; color: var(--accent); display: inline-flex; align-items: center; gap: 6px; }
.bento-link:hover { color: #7FE4F8; text-decoration: none; }
.bento-link svg { width: 14px; height: 14px; stroke: currentColor; transition: transform 0.25s; }
.bento-link:hover svg { transform: translateX(4px); }
.bento-wide {
  background: linear-gradient(90deg, rgba(34,211,238,0.08), rgba(255,255,255,0.03));
  display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.bento-wide .bento-icon { background: rgba(255,120,73,0.15); border-color: rgba(255,120,73,0.3); }
.bento-wide .bento-icon svg { stroke: var(--action); }
.bento-wide-content { flex: 1; min-width: 260px; }
.bento-wide h3 { font-size: 20px; }
.bento-wide p { margin-bottom: 0; max-width: 640px; }
/* ===== 优势数据 ===== */
.stats-section {
  padding: 84px 0; position: relative;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover; background-position: center; background-attachment: fixed;
}
.stats-section::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(7,26,38,0.94), rgba(7,26,38,0.92)); }
.stats-grid {
  position: relative; z-index: 2; display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0; background: rgba(255,255,255,0.02); border: 1px solid var(--border);
  border-radius: var(--radius-md); overflow: hidden;
}
.stat-item { text-align: center; padding: 48px 24px; position: relative; }
.stat-item:not(:last-child)::after {
  content: ""; position: absolute; right: 0; top: 30%; height: 40%; width: 1px;
  background: linear-gradient(180deg, transparent, var(--border), transparent);
}
.stat-num {
  font-family: var(--font-num); font-size: clamp(2.2rem, 4vw, 3.2rem); font-weight: 800;
  color: var(--text-main); line-height: 1.1; margin-bottom: 8px;
}
.stat-num em {
  font-style: normal; color: var(--accent); text-shadow: 0 0 24px rgba(34,211,238,0.4);
}
.stat-label { font-size: 14px; color: var(--text-sub); letter-spacing: 0.5px; }
/* ===== 案例展示 ===== */
.case-list { display: flex; flex-direction: column; gap: 56px; }
.case-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
}
.case-row.reverse .case-media { order: 2; }
.case-row.reverse .case-text { order: 1; }
.case-media {
  border-radius: var(--radius-md); overflow: hidden; position: relative;
  border: 1px solid var(--border); box-shadow: var(--shadow-lg);
}
.case-media img { width: 100%; height: 300px; object-fit: cover; transition: transform 0.5s ease; }
.case-media:hover img { transform: scale(1.03); }
.case-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 60%, rgba(7,26,38,0.4)); pointer-events: none; }
.case-tag {
  display: inline-block; padding: 4px 14px; border-radius: 999px; font-size: 12px;
  background: rgba(34,211,238,0.12); color: var(--accent); font-weight: 500; margin-bottom: 14px;
}
.case-text h3 { font-size: 22px; font-weight: 700; margin-bottom: 12px; color: var(--text-main); }
.case-text p { font-size: 15px; color: var(--text-sub); line-height: 1.75; margin-bottom: 18px; }
.case-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--accent); }
.case-link svg { width: 14px; height: 14px; stroke: currentColor; transition: transform 0.25s; }
.case-link:hover svg { transform: translateX(4px); }
/* ===== 解决方案时间轴 ===== */
.solution-section { background: rgba(255,255,255,0.02); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; }
.steps::before {
  content: ""; position: absolute; top: 40px; left: 6%; right: 6%;
  border-top: 2px dashed rgba(34,211,238,0.3); z-index: 1;
}
.step { position: relative; z-index: 2; text-align: center; padding: 0 8px; }
.step-node {
  width: 80px; height: 80px; margin: 0 auto 20px; border-radius: 50%;
  background: var(--bg-deep); border: 2px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 30px rgba(34,211,238,0.2), inset 0 0 16px rgba(34,211,238,0.06);
  font-family: var(--font-num); font-size: 22px; font-weight: 800; color: var(--accent);
  transition: all 0.3s;
}
.step:hover .step-node { transform: scale(1.06); box-shadow: 0 0 40px rgba(34,211,238,0.35); }
.step h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; color: var(--text-main); }
.step p { font-size: 14px; color: var(--text-sub); line-height: 1.65; }
/* ===== 资讯列表 ===== */
.news-section { }
.news-layout { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 48px; }
.news-left { position: sticky; top: 100px; align-self: start; }
.news-left h3 { font-size: 20px; font-weight: 700; color: var(--text-main); margin-bottom: 12px; }
.news-left p { font-size: 14px; color: var(--text-sub); line-height: 1.7; margin-bottom: 24px; }
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-item {
  display: grid; grid-template-columns: 160px 1fr; gap: 20px;
  background: rgba(255,255,255,0.03); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 16px; transition: all 0.3s ease;
}
.news-item:hover { border-color: rgba(34,211,238,0.4); box-shadow: var(--shadow-glow); transform: translateX(4px); }
.news-thumb { border-radius: var(--radius-sm); overflow: hidden; }
.news-thumb img { width: 160px; height: 100px; object-fit: cover; }
.news-content { display: flex; flex-direction: column; justify-content: center; }
.news-content .badge {
  display: inline-block; align-self: flex-start; padding: 3px 12px; border-radius: 999px;
  background: rgba(34,211,238,0.12); color: var(--accent); font-size: 12px; font-weight: 500; margin-bottom: 8px;
}
.news-content h4 { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.news-content h4 a { color: var(--text-main); text-decoration: none; transition: color 0.25s; }
.news-content h4 a:hover { color: var(--accent); text-decoration: none; }
.news-content p { font-size: 13px; color: var(--text-sub); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-meta { display: flex; align-items: center; gap: 14px; margin-top: 8px; font-size: 12px; color: var(--text-weak); }
.news-meta a { color: var(--accent); font-weight: 500; }
.news-meta a:hover { text-decoration: none; color: #7FE4F8; }
.empty-state {
  border: 1px dashed var(--border); border-radius: var(--radius-md);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 56px 24px; text-align: center;
}
.empty-state svg { width: 40px; height: 40px; stroke: var(--text-weak); margin-bottom: 16px; }
.empty-state p { color: var(--text-weak); font-size: 14px; margin-bottom: 12px; }
.empty-state a { font-size: 13px; color: var(--accent); }
/* ===== FAQ ===== */
.faq-layout { display: grid; grid-template-columns: 0.6fr 1.4fr; gap: 56px; }
.faq-left { position: sticky; top: 100px; align-self: start; }
.faq-left h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); font-weight: 800; margin-bottom: 12px; }
.faq-left p { font-size: 14px; color: var(--text-sub); line-height: 1.7; margin-bottom: 24px; }
.faq-contact { display: inline-flex; align-items: center; gap: 10px; padding: 12px 20px; border-radius: 12px; background: rgba(255,255,255,0.04); border: 1px solid var(--border); font-size: 14px; color: var(--text-sub); }
.faq-contact svg { width: 17px; height: 17px; stroke: var(--action); }
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: rgba(255,255,255,0.03); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 0; overflow: hidden; transition: border-color 0.3s;
}
.faq-item.active { border-color: rgba(34,211,238,0.4); background: rgba(34,211,238,0.03); }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px; font-size: 16px; font-weight: 600; color: var(--text-main);
  text-align: left; background: transparent; transition: color 0.25s;
}
.faq-q:hover { color: var(--accent); }
.faq-q .icon {
  flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%;
  border: 1px solid var(--border); display: flex; align-items: center; justify-content: center;
  transition: transform 0.35s, background 0.35s, border-color 0.35s;
  position: relative; font-size: 15px; line-height: 1; color: var(--accent);
}
.faq-q .icon::before { content: ""; position: absolute; width: 10px; height: 2px; background: var(--accent); border-radius: 2px; }
.faq-q .icon::after { content: ""; position: absolute; width: 2px; height: 10px; background: var(--accent); border-radius: 2px; transition: transform 0.35s; }
.faq-item.active .faq-q .icon { transform: rotate(135deg); border-color: var(--accent); background: rgba(34,211,238,0.1); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.45s ease; }
.faq-a-inner { padding: 0 24px 20px; font-size: 14px; color: var(--text-sub); line-height: 1.8; }
.faq-item.active .faq-a { max-height: 400px; }
/* ===== 联系板块 ===== */
.contact-section {
  position: relative;
  background-image: url('/assets/images/backpic/back-3.webp');
  background-size: cover; background-position: center;
}
.contact-section::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(7,26,38,0.92), rgba(7,26,38,0.96)); }
.contact-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 64px; }
.contact-info h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); font-weight: 800; margin-bottom: 12px; }
.contact-info > p { font-size: 15px; color: var(--text-sub); line-height: 1.75; margin-bottom: 36px; max-width: 440px; }
.contact-list { display: flex; flex-direction: column; gap: 24px; margin-bottom: 36px; }
.contact-list-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-list-icon {
  width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(34,211,238,0.1); border: 1px solid rgba(34,211,238,0.2);
}
.contact-list-icon svg { width: 20px; height: 20px; stroke: var(--accent); }
.contact-list-item .label { font-size: 13px; color: var(--text-weak); margin-bottom: 2px; }
.contact-list-item .value { font-size: 15px; font-weight: 600; color: var(--text-main); }
.contact-qr {
  display: inline-flex; align-items: center; gap: 16px; padding: 16px 20px;
  background: rgba(255,255,255,0.04); border: 1px solid var(--border); border-radius: var(--radius-md);
}
.contact-qr .qr-box {
  width: 64px; height: 64px; border-radius: 10px; background: #fff;
  display: flex; align-items: center; justify-content: center;
}
.contact-qr .qr-box svg { width: 44px; height: 44px; }
.contact-qr p { font-size: 13px; color: var(--text-sub); line-height: 1.5; }
.contact-form {
  border-radius: var(--radius-lg); padding: 36px 32px;
  background: linear-gradient(145deg, rgba(255,255,255,0.07), rgba(255,255,255,0.02));
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(255,255,255,0.12); box-shadow: var(--shadow-lg);
}
.contact-form h3 { font-size: 20px; font-weight: 700; margin-bottom: 6px; }
.contact-form .form-desc { font-size: 13px; color: var(--text-sub); margin-bottom: 24px; }
.form-row { margin-bottom: 18px; }
.form-row label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; color: var(--text-main); }
.form-row label span { color: var(--action); }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; padding: 12px 16px; border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.05); border: 1px solid var(--border);
  color: var(--text-main); outline: none; transition: all 0.3s; font-size: 14px;
}
.form-row textarea { min-height: 100px; resize: vertical; }
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  border-color: var(--accent); box-shadow: 0 0 0 4px rgba(34,211,238,0.1);
}
.form-row select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2294A9C2%27 stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; }
.form-row select option { background: #0B2236; }
.contact-form .btn { width: 100%; }
/* ===== CTA 横幅 ===== */
.cta-banner {
  padding: 72px 0; position: relative; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, rgba(15,61,92,0.4), rgba(7,26,38,0.2));
}
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; text-align: center; }
.cta-inner h2 { font-size: clamp(1.4rem, 2.4vw, 2rem); font-weight: 800; color: var(--text-main); margin-bottom: 6px; }
.cta-inner p { font-size: 14px; color: var(--text-sub); }
.cta-actions { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
/* ===== 页脚 ===== */
.site-footer { background: var(--bg-footer); border-top: 1px solid var(--border); padding-top: 72px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 0.8fr 0.9fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .logo-text { font-size: 20px; margin-bottom: 12px; }
.footer-brand p { font-size: 14px; color: var(--text-sub); line-height: 1.7; margin-top: 14px; max-width: 260px; }
.footer-col h3 { font-size: 14px; font-weight: 700; color: var(--text-main); margin-bottom: 20px; letter-spacing: 0.5px; position: relative; padding-bottom: 10px; }
.footer-col h3::after { content: ""; position: absolute; left: 0; bottom: 0; width: 28px; height: 2px; background: var(--accent); border-radius: 2px; }
.footer-col a {
  display: block; font-size: 14px; color: var(--text-sub); line-height: 2.4; transition: color 0.25s;
}
.footer-col a:hover { color: var(--accent); text-decoration: none; }
.footer-contact-item { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-sub); margin-bottom: 12px; }
.footer-contact-item svg { width: 16px; height: 16px; stroke: var(--accent); flex-shrink: 0; }
.footer-cta { margin-top: 20px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06); padding: 20px 0;
  font-size: 12px; color: var(--text-weak); text-align: center;
  display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap;
}
.footer-bottom a { color: var(--text-weak); }
.footer-bottom a:hover { color: var(--accent); }
/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  :root { --space-section: 64px; }
  .main-nav { display: none; }
  .header-search { display: none; }
  .header-login { display: none; }
  .header-register { display: none; }
  .burger { display: flex; }
  .mobile-menu { display: none; }
  .mobile-menu.open { display: block; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero { padding-top: 120px; }
  .hero-visual { order: 2; }
  .hero-card { margin: 0 auto; }
  .bento-col-7, .bento-col-5, .bento-col-12 { grid-column: span 12; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2)::after { display: none; }
  .step:not(:last-child)::after { display: block; }
  .case-row { grid-template-columns: 1fr; gap: 24px; }
  .case-row.reverse .case-media { order: 1; }
  .case-row.reverse .case-text { order: 2; }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 40px 24px; }
  .steps::before { display: none; }
  .news-layout { grid-template-columns: 1fr; gap: 32px; }
  .news-left { position: static; }
  .faq-layout { grid-template-columns: 1fr; gap: 32px; }
  .faq-left { position: static; }
  .contact-inner { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767px) {
  :root { --space-section: 48px; }
  .hero { padding: 100px 0 60px; min-height: auto; }
  .hero h1 { font-size: 2rem; }
  .hero-sub { font-size: 15px; }
  .hero-cta .btn { width: 100%; }
  .hero-trust { gap: 8px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-item { padding: 36px 16px; }
  .stat-item::after { display: none; }
  .news-item { grid-template-columns: 1fr; }
  .news-thumb img { width: 100%; height: 140px; }
  .news-content h4 { font-size: 15px; }
  .steps { grid-template-columns: 1fr; }
  .step { text-align: left; display: grid; grid-template-columns: 80px 1fr; gap: 16px; text-align: left; align-items: center; }
  .step-node { grid-row: span 2; margin: 0; }
  .step h3 { white-space: nowrap; }
  .faq-q { padding: 16px 18px; font-size: 15px; }
  .contact-form { padding: 26px 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-inner { text-align: left; }
  .bento-card { padding: 24px 20px; }
  .bento-wide { flex-direction: column; align-items: flex-start; gap: 16px; }
}
@media (max-width: 520px) {
  .container { width: 90%; }
  .logo-text { font-size: 15px; }
  .header-register { padding: 8px 14px; font-size: 13px; }
  .stats-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}

/* roulang page: category1 */
:root{
  --bg-deep:#071A26;
  --bg-mid:#0B2236;
  --brand:#0F3D5C;
  --accent:#22D3EE;
  --action:#FF7849;
  --success:#34D399;
  --warning:#FBBF24;
  --txt:#E6F2FF;
  --txt-sub:#94A9C2;
  --txt-mute:#5C7A99;
  --border:rgba(255,255,255,.08);
  --glass:linear-gradient(135deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  --shadow:0 12px 32px rgba(0,0,0,.35);
  --radius-sm:8px;
  --radius-md:16px;
  --radius-lg:24px;
  --container:1200px;
  --space:96px;
  --font: "PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:linear-gradient(180deg,var(--bg-deep) 0%,var(--bg-mid) 100%);
  color:var(--txt);
  font-size:16px;
  line-height:1.7;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none;transition:color .25s}
a:hover{color:#7FE8FF}
input,button,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--space) 0;position:relative}
.section-label{
  font-size:14px;font-weight:600;color:var(--accent);
  letter-spacing:.08em;text-transform:uppercase;
  display:inline-flex;align-items:center;gap:8px;
  margin-bottom:14px;
}
.section-label::before{
  content:"";width:24px;height:2px;
  background:linear-gradient(90deg,var(--accent),transparent);
}
.section-title{
  font-size:clamp(1.8rem,3vw,2.6rem);
  font-weight:800;
  line-height:1.3;
  margin-bottom:16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.section-title::after{
  content:"";flex:1;height:1px;
  background:linear-gradient(90deg,var(--border),transparent);
}
.section-sub{
  color:var(--txt-sub);
  font-size:16px;
  max-width:640px;
  margin-bottom:40px;
}
/* ===== 导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:72px;
  background:linear-gradient(135deg,rgba(7,26,38,.82),rgba(11,34,54,.72));
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  height:72px;
  display:flex;align-items:center;gap:24px;
}
.logo{
  display:flex;align-items:center;gap:10px;
  flex-shrink:0;
}
.logo-text{
  font-size:18px;font-weight:700;color:var(--txt);
  white-space:nowrap;
  letter-spacing:.02em;
}
.logo-text::after{
  content:"";display:inline-block;width:7px;height:7px;
  background:var(--success);border-radius:50%;
  margin-left:6px;
  box-shadow:0 0 8px var(--success);
}
.main-nav{
  display:flex;align-items:center;gap:4px;
  flex:1;justify-content:center;
}
.main-nav a{
  color:var(--txt-sub);
  font-size:15px;
  padding:8px 14px;
  border-radius:999px;
  transition:all .25s;
  white-space:nowrap;
}
.main-nav a:hover{
  color:var(--txt);
  background:rgba(34,211,238,.08);
}
.main-nav a.active{
  color:#fff;
  background:rgba(34,211,238,.12);
  box-shadow:inset 0 -2px 0 var(--accent);
}
.header-actions{
  display:flex;align-items:center;gap:14px;
  flex-shrink:0;
}
.header-search{
  display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  border-radius:999px;
  padding:6px 14px;
  width:220px;
  transition:border-color .25s, box-shadow .25s;
}
.header-search:focus-within{
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(34,211,238,.15);
}
.header-search svg{
  width:16px;height:16px;stroke:var(--txt-mute);flex-shrink:0;
}
.header-search input{
  background:transparent;border:none;outline:none;
  color:var(--txt);font-size:14px;width:100%;
}
.header-search input::placeholder{color:var(--txt-mute)}
.header-login{
  color:var(--txt-sub);font-size:14px;font-weight:500;
  padding:6px 12px;
}
.header-login:hover{color:var(--txt)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;
  font-weight:600;
  font-size:15px;
  padding:10px 24px;
  border:1px solid transparent;
  transition:transform .25s, box-shadow .25s, background .25s;
  line-height:1.4;
  white-space:nowrap;
}
.btn:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}
.btn-primary{
  background:linear-gradient(135deg,#FF9A6A,var(--action));
  color:#1A0D08;
  box-shadow:0 0 20px rgba(255,120,73,.35);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 30px rgba(255,120,73,.55);
  color:#1A0D08;
  filter:brightness(1.05);
}
.btn-primary:active{
  transform:translateY(1px);
  filter:brightness(.92);
}
.btn-outline{
  background:transparent;
  border-color:var(--accent);
  color:var(--accent);
}
.btn-outline:hover{
  background:rgba(34,211,238,.1);
  box-shadow:0 0 18px rgba(34,211,238,.2);
  color:var(--accent);
}
.btn-outline:active{
  transform:translateY(1px);
}
.header-register{
  padding:8px 20px;
  font-size:14px;
}
.burger{
  display:none;
  width:40px;height:40px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--border);
  border-radius:10px;
  position:relative;
}
.burger span,.burger span::before,.burger span::after{
  content:"";
  position:absolute;
  left:10px;right:10px;height:2px;
  background:var(--txt);
  border-radius:2px;
  transition:transform .3s;
}
.burger span{top:19px}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.burger[aria-expanded="true"] span{
  background:transparent;
}
.burger[aria-expanded="true"] span::before{
  transform:rotate(45deg);top:0;
}
.burger[aria-expanded="true"] span::after{
  transform:rotate(-45deg);top:0;
}
/* ===== 页脚 ===== */
.site-footer{
  background:#050F18;
  border-top:1px solid var(--border);
  padding:56px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{
  color:var(--txt-sub);
  font-size:14px;
  line-height:1.8;
  max-width:300px;
}
.footer-col h3{
  font-size:14px;font-weight:700;color:var(--txt);
  margin-bottom:16px;
  letter-spacing:.05em;
}
.footer-col a{
  display:block;
  color:var(--txt-sub);
  font-size:14px;
  line-height:2.4;
  transition:color .2s;
}
.footer-col a:hover{color:var(--accent)}
.footer-contact-item{
  display:flex;align-items:center;gap:10px;
  color:var(--txt-sub);
  font-size:14px;
  margin-bottom:12px;
}
.footer-contact-item svg{
  width:18px;height:18px;stroke:var(--accent);flex-shrink:0;
}
.footer-bottom{
  border-top:1px solid var(--border);
  padding:18px 0;
  text-align:center;
  color:var(--txt-mute);
  font-size:12px;
}
.footer-bottom a{
  color:var(--txt-mute);
}
/* ===== Hero ===== */
.hero-cat{
  position:relative;
  padding:168px 0 96px;
  overflow:hidden;
  background:
    linear-gradient(180deg,rgba(7,26,38,.92) 0%,rgba(7,26,38,.75) 50%,rgba(11,34,54,.94) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero-cat::before{
  content:"";
  position:absolute;
  top:-120px;right:-120px;
  width:480px;height:480px;
  background:radial-gradient(circle,rgba(34,211,238,.14),transparent 65%);
  pointer-events:none;
}
.hero-cat::after{
  content:"";
  position:absolute;
  bottom:0;left:0;right:0;height:80px;
  background:linear-gradient(180deg,transparent,var(--bg-deep));
  pointer-events:none;
}
.hero-cat .container{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:56px;
  align-items:center;
  position:relative;z-index:1;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(34,211,238,.1);
  border:1px solid rgba(34,211,238,.25);
  color:var(--accent);
  font-size:13px;font-weight:600;
  padding:6px 16px;
  border-radius:999px;
  margin-bottom:24px;
}
.hero-badge::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--success);
  box-shadow:0 0 8px var(--success);
}
.hero-cat h1{
  font-size:clamp(2.2rem,5vw,3.8rem);
  font-weight:800;
  line-height:1.25;
  margin-bottom:20px;
  letter-spacing:.01em;
}
.hero-cat h1 .gradient{
  background:linear-gradient(135deg,var(--accent),#7FE8FF);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-sub{
  color:var(--txt-sub);
  font-size:17px;
  line-height:1.8;
  max-width:540px;
  margin-bottom:32px;
}
.hero-cta{
  display:flex;gap:16px;flex-wrap:wrap;
  margin-bottom:36px;
}
.hero-trust{
  display:flex;gap:12px;flex-wrap:wrap;
}
.trust-badge{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  border-radius:999px;
  padding:6px 14px;
  font-size:13px;
  color:var(--txt-sub);
}
.trust-badge svg{
  width:15px;height:15px;stroke:var(--success);
}
.hero-card{
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-lg);
  padding:32px;
  box-shadow:var(--shadow);
  position:relative;
}
.hero-card::before{
  content:"";
  position:absolute;
  top:-1px;right:-1px;
  width:80px;height:80px;
  background:linear-gradient(135deg,rgba(34,211,238,.2),transparent 70%);
  border-radius:0 var(--radius-lg) 0 0;
  pointer-events:none;
}
.hero-card h3{
  font-size:18px;font-weight:700;
  margin-bottom:6px;
}
.hero-card p{
  color:var(--txt-sub);
  font-size:14px;
  margin-bottom:24px;
}
.mock-form .form-row{
  margin-bottom:16px;
}
.mock-form label{
  display:block;
  font-size:13px;
  color:var(--txt-sub);
  margin-bottom:6px;
}
.mock-form .input-box{
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  padding:10px 14px;
  font-size:14px;
  color:var(--txt);
  display:flex;align-items:center;gap:10px;
}
.mock-form .input-box svg{
  width:15px;height:15px;stroke:var(--txt-mute);flex-shrink:0;
}
.mock-form .input-box span{color:var(--txt-mute)}
.mock-form .btn{width:100%;margin-top:6px}
/* ===== 卖点 ===== */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.feature-card{
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:28px;
  transition:border-color .3s, box-shadow .3s, transform .3s;
  position:relative;
  overflow:hidden;
}
.feature-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--accent),transparent);
  opacity:0;transition:opacity .3s;
}
.feature-card:hover{
  border-color:rgba(34,211,238,.4);
  box-shadow:0 0 30px rgba(34,211,238,.12);
  transform:translateY(-3px);
}
.feature-card:hover::before{opacity:1}
.feature-icon{
  width:48px;height:48px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(34,211,238,.1);
  border-radius:12px;
  margin-bottom:18px;
}
.feature-icon svg{
  width:26px;height:26px;stroke:var(--accent);
}
.feature-card h3{
  font-size:18px;font-weight:700;
  margin-bottom:10px;
}
.feature-card p{
  color:var(--txt-sub);
  font-size:15px;
  line-height:1.7;
  margin-bottom:14px;
}
.feature-link{
  font-size:14px;
  font-weight:500;
  display:inline-flex;align-items:center;gap:6px;
}
.feature-link::after{
  content:"→";
  transition:transform .2s;
}
.feature-link:hover::after{
  transform:translateX(4px);
}
/* ===== 应用场景 ===== */
.scenario-section{
  background:rgba(255,255,255,.015);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.scenario-list{
  display:grid;
  gap:24px;
}
.scenario-row{
  display:grid;
  grid-template-columns:1fr 320px;
  gap:32px;
  align-items:center;
  background:rgba(255,255,255,.03);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:32px;
  transition:border-color .3s, box-shadow .3s;
}
.scenario-row:hover{
  border-color:rgba(34,211,238,.3);
  box-shadow:0 8px 28px rgba(0,0,0,.28);
}
.scenario-row.reverse{grid-template-columns:320px 1fr}
.scenario-row.reverse .scenario-img{order:2}
.scenario-row.reverse .scenario-info{order:1}
.scenario-tag{
  display:inline-block;
  background:rgba(34,211,238,.12);
  color:var(--accent);
  font-size:12px;
  font-weight:600;
  padding:4px 12px;
  border-radius:999px;
  margin-bottom:12px;
}
.scenario-info h3{
  font-size:22px;font-weight:700;
  margin-bottom:8px;
}
.scenario-info p{
  color:var(--txt-sub);
  font-size:15px;
  line-height:1.7;
  margin-bottom:14px;
}
.scenario-info a{
  font-size:14px;font-weight:500;
}
.scenario-img{
  border-radius:var(--radius-md);
  overflow:hidden;
  height:220px;
  position:relative;
}
.scenario-img img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s;
}
.scenario-row:hover .scenario-img img{
  transform:scale(1.05);
}
.scenario-img::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(7,26,38,.5));
}
/* ===== 流程时间轴 ===== */
.process-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:20px;
  position:relative;
}
.process-grid::before{
  content:"";
  position:absolute;
  top:28px;left:8%;right:8%;
  height:2px;
  border-top:2px dashed rgba(34,211,238,.3);
  z-index:0;
}
.process-item{
  text-align:center;
  position:relative;
  z-index:1;
}
.process-node{
  width:60px;height:60px;
  margin:0 auto 18px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(34,211,238,.2),rgba(34,211,238,.05));
  border:2px solid var(--accent);
  box-shadow:0 0 24px rgba(34,211,238,.3);
  font-size:20px;font-weight:800;
  color:var(--accent);
}
.process-node svg{
  width:26px;height:26px;stroke:var(--accent);
}
.process-item h3{
  font-size:17px;font-weight:700;
  margin-bottom:8px;
}
.process-item p{
  color:var(--txt-sub);
  font-size:14px;
  line-height:1.6;
}
/* ===== FAQ ===== */
.faq-wrap{
  display:grid;
  grid-template-columns:2fr 3fr;
  gap:48px;
  align-items:start;
}
.faq-left .section-title{
  margin-bottom:16px;
}
.faq-left .section-sub{
  margin-bottom:24px;
}
.faq-left .btn{
  margin-top:8px;
}
.faq-list{
  display:grid;
  gap:16px;
}
.faq-item{
  background:rgba(255,255,255,.03);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  overflow:hidden;
  transition:border-color .3s, background .3s;
}
.faq-item.active{
  border-color:rgba(34,211,238,.4);
  background:rgba(34,211,238,.04);
}
.faq-q{
  padding:20px 24px;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;
  cursor:pointer;
  font-size:16px;
  font-weight:600;
  color:var(--txt);
  background:none;
  border:none;
  text-align:left;
  width:100%;
  transition:color .2s;
}
.faq-q:hover{color:var(--accent)}
.faq-icon{
  width:28px;height:28px;
  border-radius:50%;
  background:rgba(34,211,238,.1);
  border:1px solid rgba(34,211,238,.3);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
  transition:transform .3s;
  font-size:18px;
  color:var(--accent);
  line-height:1;
}
.faq-item.active .faq-icon{
  transform:rotate(45deg);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-a-inner{
  padding:0 24px 20px;
  color:var(--txt-sub);
  font-size:15px;
  line-height:1.75;
}
/* ===== 相关服务 ===== */
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.related-card{
  background:rgba(255,255,255,.035);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:28px;
  transition:border-color .3s, box-shadow .3s, transform .3s;
  position:relative;
  overflow:hidden;
}
.related-card::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--accent),var(--action));
  opacity:0;transition:opacity .3s;
}
.related-card:hover{
  border-color:rgba(34,211,238,.35);
  transform:translateY(-4px);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
}
.related-card:hover::before{opacity:1}
.related-card h3{
  font-size:18px;font-weight:700;
  margin-bottom:8px;
}
.related-card p{
  color:var(--txt-sub);
  font-size:14px;
  line-height:1.7;
  margin-bottom:16px;
}
.related-card a{
  font-size:14px;font-weight:600;
}
.related-num{
  position:absolute;
  top:20px;right:24px;
  font-size:32px;font-weight:800;
  color:rgba(255,255,255,.06);
  line-height:1;
}
/* ===== CTA ===== */
.cta-section{
  position:relative;
  overflow:hidden;
  border-top:1px solid var(--border);
}
.cta-box{
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-lg);
  padding:56px 48px;
  text-align:center;
  position:relative;
  box-shadow:var(--shadow);
}
.cta-box::before{
  content:"";
  position:absolute;
  top:-60px;left:50%;
  transform:translateX(-50%);
  width:300px;height:160px;
  background:radial-gradient(ellipse,rgba(255,120,73,.2),transparent 70%);
  pointer-events:none;
}
.cta-box h2{
  font-size:clamp(1.6rem,3vw,2.4rem);
  font-weight:800;
  margin-bottom:12px;
}
.cta-box p{
  color:var(--txt-sub);
  font-size:16px;
  margin-bottom:32px;
  max-width:560px;
  margin-left:auto;margin-right:auto;
}
.cta-actions{
  display:flex;gap:16px;justify-content:center;flex-wrap:wrap;
}
/* ===== 响应式 ===== */
@media (max-width:1024px){
  :root{--space:72px}
  .header-search{width:160px}
  .hero-cat .container{
    grid-template-columns:1fr;
    gap:40px;
  }
  .hero-card{
    max-width:520px;
  }
  .feature-grid,.related-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .process-grid{
    grid-template-columns:repeat(2,1fr);
    gap:32px 24px;
  }
  .process-grid::before{display:none}
  .scenario-row,
  .scenario-row.reverse{
    grid-template-columns:1fr;
    gap:20px;
  }
  .scenario-row.reverse .scenario-img{order:0}
  .scenario-row.reverse .scenario-info{order:0}
  .scenario-img{height:220px}
  .faq-wrap{
    grid-template-columns:1fr;
    gap:32px;
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
  }
}
@media (max-width:768px){
  .main-nav{
    position:fixed;
    top:72px;left:0;right:0;
    background:rgba(7,26,38,.98);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-bottom:1px solid var(--border);
    flex-direction:column;
    align-items:flex-start;
    padding:16px 24px;
    gap:4px;
    transform:translateY(-130%);
    transition:transform .35s;
    z-index:99;
  }
  .main-nav.open{
    transform:translateY(0);
  }
  .main-nav a{
    display:block;
    width:100%;
    padding:12px 16px;
  }
  .header-search{
    width:120px;
  }
  .header-login{display:none}
  .header-actions .header-register{
    padding:8px 14px;
    font-size:13px;
  }
  .burger{display:block}
  .hero-cat{
    padding:120px 0 64px;
  }
  .hero-cat h1{
    font-size:clamp(1.9rem,7vw,2.4rem);
  }
  .feature-grid,.related-grid{
    grid-template-columns:1fr;
  }
  .process-grid{
    grid-template-columns:1fr;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:32px;
  }
  .cta-box{
    padding:40px 24px;
  }
}
@media (max-width:520px){
  .header-search{display:none}
  .hero-cta .btn{
    width:100%;
  }
  .scenario-row{
    padding:20px;
  }
  .scenario-img{
    height:180px;
  }
  .section-title::after{
    display:none;
  }
}

/* roulang page: article */
:root {
  --bg-deep: #071A26;
  --bg-dark: #0B2236;
  --brand: #0F3D5C;
  --accent: #22D3EE;
  --accent-bright: #67E8F9;
  --action: #FF7849;
  --action-bright: #FF9A76;
  --success: #34D399;
  --warn: #FBBF24;
  --text-main: #E6F2FF;
  --text-sub: #94A9C2;
  --text-weak: #5C7A99;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.12);
  --glass-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  --glass-border: rgba(255, 255, 255, 0.10);
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --container: 1200px;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-num: "DIN Alternate", "Inter", sans-serif;
  --section-space: 96px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

body {
  font-family: var(--font-sans);
  background: linear-gradient(180deg, #071A26 0%, #0B2236 100%);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #FF7849 0%, #FF9A5B 100%);
  color: #fff;
  box-shadow: 0 6px 20px rgba(255, 120, 73, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  color: #fff;
  box-shadow: 0 10px 28px rgba(255, 120, 73, 0.5);
  filter: brightness(1.05);
}

.btn-primary:active {
  transform: translateY(0);
  filter: brightness(0.95);
  box-shadow: 0 4px 14px rgba(255, 120, 73, 0.35);
}

.btn-ghost {
  border-color: rgba(34, 211, 238, 0.5);
  color: var(--accent);
  background: transparent;
}

.btn-ghost:hover {
  background: rgba(34, 211, 238, 0.10);
  border-color: var(--accent);
  color: var(--accent-bright);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(34, 211, 238, 0.12);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(180deg, rgba(7, 26, 38, 0.92), rgba(7, 26, 38, 0.72));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  height: 72px;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 36px;
  height: 72px;
}

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

.logo svg {
  flex-shrink: 0;
}

.logo-text {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-main);
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.logo:hover .logo-text {
  color: var(--accent-bright);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  flex: 1;
  justify-content: center;
}

.main-nav a {
  color: var(--text-sub);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 2px;
  position: relative;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.3s ease;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  height: 2px;
  width: 0;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.main-nav a:hover {
  color: var(--text-main);
}

.main-nav a:hover::after {
  width: 100%;
}

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

.main-nav a.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 8px 16px;
  width: 220px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.header-search svg {
  width: 18px;
  height: 18px;
  stroke: var(--text-weak);
  flex-shrink: 0;
}

.header-search input {
  background: none;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 14px;
  width: 100%;
}

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

.header-search:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
}

.header-login {
  color: var(--text-sub);
  text-decoration: none;
  font-size: 15px;
  padding: 8px 12px;
  white-space: nowrap;
  transition: color 0.3s ease;
}

.header-login:hover {
  color: var(--text-main);
}

.header-register {
  padding: 10px 22px;
  font-size: 14px;
}

.burger {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.burger:hover {
  border-color: var(--border-strong);
  background: rgba(255, 255, 255, 0.07);
}

.burger span,
.burger span::before,
.burger span::after {
  width: 18px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  display: block;
  transition: all 0.3s ease;
}

.burger span {
  position: relative;
}

.burger span::before,
.burger span::after {
  content: "";
  position: absolute;
  left: 0;
}

.burger span::before {
  top: -6px;
}

.burger span::after {
  top: 6px;
}

.burger.active span {
  background: transparent;
}

.burger.active span::before {
  transform: rotate(45deg);
  top: 0;
}

.burger.active span::after {
  transform: rotate(-45deg);
  top: 0;
}

.mobile-search {
  display: none;
}

.article-banner {
  padding: 64px 0 48px;
  background:
    linear-gradient(120deg, rgba(7, 26, 38, 0.82), rgba(11, 34, 54, 0.70)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-bottom: 1px solid var(--border);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

.breadcrumb a:hover {
  color: var(--accent-bright);
  text-decoration: underline;
}

.bcrumb-sep {
  color: var(--text-weak);
  font-size: 13px;
}

.bcrumb-current {
  color: var(--text-sub);
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-title {
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.35;
  color: var(--text-main);
  max-width: 800px;
  margin-bottom: 20px;
  letter-spacing: 0.01em;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 14px;
  color: var(--text-sub);
}

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

.meta-dot {
  color: var(--text-weak);
  font-size: 12px;
}

.meta-label {
  color: var(--text-weak);
}

.article-section {
  padding: 48px 0 32px;
}

.article-shell {
  max-width: 760px;
  margin: 0 auto;
}

.article-body-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 56px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

.article-content {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-main);
}

.article-content > * + * {
  margin-top: 1.25em;
}

.article-content p {
  margin-bottom: 1.5em;
  color: rgba(230, 242, 255, 0.88);
}

.article-content h2 {
  font-size: 1.55rem;
  font-weight: 700;
  margin-top: 2em;
  margin-bottom: 0.8em;
  padding-left: 14px;
  border-left: 4px solid var(--accent);
  line-height: 1.4;
  color: var(--text-main);
}

.article-content h3 {
  font-size: 1.28rem;
  font-weight: 600;
  margin-top: 1.6em;
  margin-bottom: 0.6em;
  color: var(--accent);
  line-height: 1.4;
}

.article-content h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-top: 1.4em;
  margin-bottom: 0.5em;
  color: var(--text-main);
}

.article-content ul,
.article-content ol {
  padding-left: 1.6em;
  margin: 1.5em 0;
  color: rgba(230, 242, 255, 0.88);
}

.article-content li {
  margin-bottom: 0.6em;
}

.article-content img {
  border-radius: var(--radius-md);
  margin: 2em auto;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
}

.article-content blockquote {
  border-left: 3px solid var(--accent);
  background: rgba(34, 211, 238, 0.06);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.8em 0;
  color: var(--text-sub);
  font-style: normal;
}

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

.article-content code {
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.88em;
  font-family: "SFMono-Regular", Consolas, monospace;
  color: var(--accent-bright);
}

.article-content pre {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border);
  padding: 20px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 1.8em 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-main);
}

.article-content pre code {
  background: none;
  padding: 0;
  color: inherit;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.8em 0;
  font-size: 15px;
}

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

.article-content th {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  font-weight: 600;
}

.article-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

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

.not-found-state {
  padding: 48px 24px;
  text-align: center;
}

.not-found-state svg {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  stroke: var(--text-weak);
  display: block;
}

.not-found-state h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}

.not-found-state p {
  color: var(--text-sub);
  font-size: 15px;
  margin-bottom: 28px;
}

.article-pagination {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.pag-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
  transition: border-color 0.3s ease, background 0.3s ease, transform 0.3s ease;
}

.pag-link:hover {
  border-color: rgba(34, 211, 238, 0.4);
  background: rgba(34, 211, 238, 0.06);
  transform: translateY(-2px);
}

.pag-next {
  text-align: right;
}

.pag-label {
  font-size: 12px;
  color: var(--text-weak);
  letter-spacing: 0.05em;
}

.pag-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
}

.article-back {
  margin-top: 20px;
  text-align: center;
}

.article-back a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-sub);
  padding: 8px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  transition: all 0.3s ease;
}

.article-back a:hover {
  color: var(--accent);
  border-color: rgba(34, 211, 238, 0.4);
  background: rgba(34, 211, 238, 0.06);
}

.related-section {
  padding: 80px 0 24px;
}

.section-head {
  margin-bottom: 36px;
}

.section-tag {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.section-head h2 {
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
}

.section-head-line {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--border-strong) 0%, transparent 100%);
}

.related-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.related-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px;
  transition: border-color 0.3s ease, background 0.3s ease, transform 0.3s ease;
}

.related-card:hover {
  border-color: rgba(34, 211, 238, 0.4);
  background: rgba(34, 211, 238, 0.04);
  transform: translateY(-2px);
}

.related-card img {
  width: 160px;
  height: 100px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  background: var(--brand);
}

.related-card-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.related-card-body h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-time {
  font-size: 13px;
  color: var(--text-weak);
}

.cta-section {
  padding: 56px 0 96px;
}

.cta-banner {
  background:
    linear-gradient(120deg, rgba(15, 61, 92, 0.85), rgba(7, 26, 38, 0.82)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 48px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
  box-shadow: var(--shadow);
}

.cta-content h2 {
  font-size: clamp(1.3rem, 2vw, 1.7rem);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.cta-content p {
  color: var(--text-sub);
  font-size: 15px;
  max-width: 520px;
}

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

.site-footer {
  background: #050F18;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.footer-brand p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-top: 12px;
  max-width: 280px;
}

.footer-col h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: 0.03em;
}

.footer-col a {
  display: block;
  color: var(--text-sub);
  font-size: 14px;
  line-height: 2.4;
  transition: color 0.3s ease;
}

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

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-sub);
  font-size: 14px;
  line-height: 2.4;
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  stroke: var(--accent);
  flex-shrink: 0;
}

.footer-cta {
  margin-top: 18px;
}

.footer-bottom {
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 12px;
  color: var(--text-weak);
}

@media (max-width: 1024px) {
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(7, 26, 38, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 4px;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.35s ease, opacity 0.35s ease, visibility 0.35s;
    border-bottom: 1px solid var(--border);
    z-index: 99;
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .main-nav a {
    font-size: 16px;
    padding: 12px 0;
    width: 100%;
  }

  .header-search {
    display: none;
  }

  .mobile-search {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    padding: 8px 16px;
    width: 100%;
    margin-bottom: 16px;
  }

  .mobile-search svg {
    width: 18px;
    height: 18px;
    stroke: var(--text-weak);
    flex-shrink: 0;
  }

  .mobile-search input {
    background: none;
    border: none;
    outline: none;
    color: var(--text-main);
    font-size: 14px;
    width: 100%;
  }

  .mobile-search input::placeholder {
    color: var(--text-weak);
  }

  .burger {
    display: flex;
  }

  .header-actions {
    gap: 8px;
  }

  .header-register {
    padding: 8px 16px;
    font-size: 13px;
  }

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

@media (max-width: 768px) {
  .article-banner {
    padding: 48px 0 36px;
  }

  .article-body-card {
    padding: 32px 24px;
  }

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

  .cta-banner {
    padding: 36px 28px;
    flex-direction: column;
    align-items: flex-start;
  }

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

  .article-pagination {
    grid-template-columns: 1fr;
  }

  .pag-next {
    text-align: left;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  .logo-text {
    font-size: 17px;
  }

  .header-login {
    display: none;
  }

  .header-inner {
    gap: 16px;
  }

  .article-body-card {
    padding: 24px 18px;
  }

  .article-content {
    font-size: 16px;
  }

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

  .related-card img {
    width: 100%;
    height: 140px;
  }

  .cta-actions {
    width: 100%;
  }

  .cta-actions .btn {
    flex: 1;
    min-width: 120px;
  }
}

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

/* roulang page: category2 */
:root {
  --bg-deep: #071A26;
  --bg-blue: #0B2236;
  --brand: #0F3D5C;
  --accent: #22D3EE;
  --accent-light: rgba(34, 211, 238, 0.1);
  --action: #FF7849;
  --success: #34D399;
  --warning: #FBBF24;
  --text-main: #E6F2FF;
  --text-sub: #94A9C2;
  --text-dim: #5C7A99;
  --border: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.10);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.35);
  --font-main: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-blue) 100%);
  color: var(--text-main);
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.25s ease;
}
a:hover { color: #7BE5FF; text-decoration: underline; }

img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
button { border: none; background: none; cursor: pointer; }
ul, ol { list-style: none; }

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, #FF8A5C 0%, var(--action) 100%);
  color: #0B1A26;
  box-shadow: 0 6px 24px rgba(255, 120, 73, 0.35);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #FF9A70 0%, #FF6A3D 100%);
  color: #0B1A26;
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(255, 120, 73, 0.5);
  text-decoration: none;
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 4px 16px rgba(255, 120, 73, 0.4); }
.btn-primary:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.btn-ghost {
  background: transparent;
  border: 1px solid rgba(34, 211, 238, 0.55);
  color: var(--accent);
}
.btn-ghost:hover {
  background: var(--accent-light);
  border-color: var(--accent);
  color: #7BE5FF;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(34, 211, 238, 0.15);
  text-decoration: none;
}
.btn-ghost:active { transform: translateY(0); }
.btn-ghost:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn-lg { padding: 15px 36px; font-size: 16px; }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 15px;
  color: var(--accent);
  text-decoration: none;
  transition: color 0.25s ease, gap 0.25s ease;
}
.text-link:hover { color: #7BE5FF; gap: 10px; text-decoration: none; }
.text-link::after { content: "→"; font-size: 16px; }

/* Header */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 72px;
  background: linear-gradient(180deg, rgba(7, 26, 38, 0.92), rgba(11, 34, 54, 0.78));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}
.site-header.scrolled {
  background: rgba(5, 16, 24, 0.96);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}
.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-main);
  text-decoration: none;
  flex-shrink: 0;
}
.logo:hover { text-decoration: none; }
.logo-text {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.logo-text::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  margin-left: 6px;
  vertical-align: middle;
  box-shadow: 0 0 8px rgba(52, 211, 153, 0.8);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.main-nav a {
  position: relative;
  padding: 10px 16px;
  color: var(--text-sub);
  font-size: 15px;
  font-weight: 500;
  border-radius: 8px;
  transition: color 0.25s ease, background 0.25s ease;
}
.main-nav a:hover { color: var(--text-main); background: rgba(255, 255, 255, 0.04); text-decoration: none; }
.main-nav a.active { color: var(--accent); font-weight: 600; }
.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 16px; right: 16px; bottom: 4px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(34, 211, 238, 0.7);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 220px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.header-search:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
}
.header-search svg {
  width: 16px; height: 16px;
  stroke: var(--text-dim);
  flex-shrink: 0;
}
.header-search input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  font-size: 14px;
  color: var(--text-main);
}
.header-search input::placeholder { color: var(--text-dim); }
.header-login {
  color: var(--text-main);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 4px;
  transition: color 0.25s ease;
}
.header-login:hover { color: var(--accent); text-decoration: none; }
.header-register {
  padding: 10px 20px;
  font-size: 14px;
}
.burger {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  position: relative;
}
.burger span,
.burger span::before,
.burger span::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  position: absolute;
  left: 10px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.burger span { top: 19px; }
.burger span::before { top: -6px; }
.burger span::after { top: 6px; }
.site-header.open .burger span { transform: rotate(45deg); }
.site-header.open .burger span::before { opacity: 0; }
.site-header.open .burger span::after { transform: rotate(-90deg); top: 0; }

/* Hero */
.sec-hero {
  position: relative;
  padding: 160px 0 96px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.35;
  z-index: 0;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 26, 38, 0.92) 0%, rgba(7, 26, 38, 0.76) 45%, rgba(11, 34, 54, 0.95) 100%);
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--accent-light);
  border: 1px solid rgba(34, 211, 238, 0.2);
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-tag::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
}
.sec-hero h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.sec-hero h1 .highlight {
  background: linear-gradient(135deg, var(--accent), #7BE5FF);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  font-size: 17px;
  color: var(--text-sub);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.hero-trust {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.hero-trust li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-sub);
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 999px;
}
.dot { width: 6px; height: 6px; border-radius: 50%; display: inline-block; }
.dot-cyan { background: var(--accent); box-shadow: 0 0 6px var(--accent); }
.dot-orange { background: var(--action); box-shadow: 0 0 6px var(--action); }
.dot-green { background: var(--success); box-shadow: 0 0 6px var(--success); }

.hero-visual {
  display: flex;
  justify-content: center;
}
.hero-card {
  width: 100%;
  max-width: 420px;
  border-radius: var(--radius-lg);
  padding: 28px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.02));
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
}
.hero-card-top {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-main);
}
.status-pulse {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--success);
  position: relative;
  flex-shrink: 0;
}
.status-pulse::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid rgba(52, 211, 153, 0.4);
  animation: pulse 2s ease-out infinite;
}
@keyframes pulse {
  0% { transform: scale(0.6); opacity: 1; }
  100% { transform: scale(1.6); opacity: 0; }
}
.hero-card-body {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-sub);
  padding: 18px;
  background: rgba(7, 26, 38, 0.4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 18px;
}
.hero-card-foot {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.chip {
  padding: 6px 14px;
  font-size: 13px;
  border-radius: 999px;
  background: var(--accent-light);
  border: 1px solid rgba(34, 211, 238, 0.2);
  color: var(--accent);
}

/* Section head */
.sec-block { padding: 96px 0; }
.sec-head {
  max-width: 700px;
  margin-bottom: 48px;
}
.sec-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 14px;
  text-transform: uppercase;
}
.sec-label::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--accent);
}
.sec-head h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  position: relative;
  padding-left: 0;
}
.sec-head h2::after {
  content: "";
  display: block;
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  border-radius: 4px;
  margin-top: 14px;
}
.sec-head p {
  font-size: 16px;
  color: var(--text-sub);
  line-height: 1.8;
}

/* Security services bento */
.sec-service { padding: 96px 0; }
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
}
.bento-card {
  grid-column: span 7;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
  position: relative;
  overflow: hidden;
}
.bento-card::before {
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: 140px; height: 140px;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.bento-card:hover {
  border-color: rgba(34, 211, 238, 0.4);
  box-shadow: 0 12px 34px rgba(34, 211, 238, 0.1);
  transform: translateY(-3px);
}
.bento-card.span-5 { grid-column: span 5; }
.bento-card.span-7 { grid-column: span 7; }
.bento-card.span-12 { grid-column: span 12; }
.bento-icon {
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  border-radius: 12px;
  background: var(--accent-light);
  border: 1px solid rgba(34, 211, 238, 0.2);
  color: var(--accent);
}
.bento-icon svg { width: 22px; height: 22px; }
.bento-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-main);
}
.bento-card p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-sub);
  margin-bottom: 14px;
}
.bento-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  transition: gap 0.2s ease;
}
.bento-link:hover { gap: 10px; text-decoration: none; }

/* Data strip */
.sec-data { padding: 64px 0; background: rgba(5, 16, 24, 0.5); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.data-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.data-item {
  text-align: center;
  padding: 20px 16px;
  position: relative;
}
.data-item:not(:first-child)::before {
  content: "";
  position: absolute;
  left: -16px; top: 50%;
  transform: translateY(-50%);
  width: 1px; height: 56px;
  background: var(--border);
}
.data-num {
  font-size: 42px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
  text-shadow: 0 0 20px rgba(34, 211, 238, 0.35);
  font-family: "DIN Alternate", "Inter", sans-serif;
}
.data-label {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-sub);
}

/* Flow timeline */
.sec-flow { padding: 96px 0; position: relative; }
.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
}
.flow-grid::before {
  content: "";
  position: absolute;
  top: 24px; left: 60px; right: 60px;
  height: 2px;
  background-image: linear-gradient(90deg, var(--accent), rgba(34, 211, 238, 0.4), var(--accent), rgba(34, 211, 238, 0.4));
  background-size: 20px 2px;
  background-repeat: repeat-x;
  opacity: 0.5;
}
.flow-step {
  position: relative;
  padding: 16px 12px 0;
  text-align: center;
}
.flow-node {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: rgba(7, 26, 38, 0.9);
  border: 2px solid var(--accent);
  color: var(--accent);
  font-weight: 700;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 0 16px rgba(34, 211, 238, 0.35);
  position: relative;
}
.flow-step h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}
.flow-step p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}

/* Scene */
.sec-scene { padding: 96px 0; }
.scene-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-bottom: 72px;
}
.scene-block:last-child { margin-bottom: 0; }
.scene-block.reverse { grid-template-columns: 1fr 1fr; }
.scene-block.reverse .scene-img { order: 2; }
.scene-block.reverse .scene-content { order: 1; }
.scene-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}
.scene-img img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.scene-img:hover img { transform: scale(1.03); }
.scene-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: 10px;
  background: var(--accent-light);
  border: 1px solid rgba(34, 211, 238, 0.25);
  color: var(--accent);
  font-weight: 800;
  font-size: 16px;
  margin-bottom: 16px;
}
.scene-content h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-main);
}
.scene-content p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-sub);
  margin-bottom: 20px;
}

/* FAQ */
.sec-faq { padding: 96px 0; background: rgba(5, 16, 24, 0.35); border-top: 1px solid var(--border); }
.faq-wrap {
  display: grid;
  grid-template-columns: 0.6fr 1.4fr;
  gap: 64px;
}
.faq-side h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 16px;
}
.faq-side p {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 24px;
}
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.02);
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}
.faq-item.active {
  border-color: rgba(34, 211, 238, 0.35);
  background: rgba(34, 211, 238, 0.04);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  text-align: left;
  transition: color 0.25s ease;
}
.faq-q:hover { color: var(--accent); }
.faq-plus {
  position: relative;
  width: 20px; height: 20px;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}
.faq-plus::before,
.faq-plus::after {
  content: "";
  position: absolute;
  background: var(--accent);
  border-radius: 2px;
}
.faq-plus::before { width: 18px; height: 2px; top: 9px; left: 1px; }
.faq-plus::after { width: 2px; height: 18px; top: 1px; left: 9px; }
.faq-item.active .faq-plus { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s ease;
  padding: 0 22px;
}
.faq-a p {
  padding-bottom: 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-sub);
}

/* CTA */
.sec-cta { padding: 96px 0; }
.cta-box {
  position: relative;
  padding: 64px 48px;
  border-radius: var(--radius-lg);
  text-align: center;
  background: linear-gradient(150deg, rgba(15, 61, 92, 0.6), rgba(7, 26, 38, 0.9));
  border: 1px solid rgba(34, 211, 238, 0.2);
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute;
  inset: -1px;
  background-image: radial-gradient(circle at 20% 50%, rgba(34, 211, 238, 0.12), transparent 50%);
  pointer-events: none;
}
.cta-box h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 16px;
  position: relative;
}
.cta-box p {
  font-size: 16px;
  color: var(--text-sub);
  margin-bottom: 32px;
  position: relative;
}
.cta-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

/* Footer */
.site-footer {
  background: #050F18;
  border-top: 1px solid var(--border);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .logo { margin-bottom: 18px; }
.footer-brand p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
  margin-top: 16px;
}
.footer-col h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 18px;
  text-transform: none;
  letter-spacing: 0.04em;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 2.4;
  transition: color 0.2s ease;
}
.footer-col a:hover { color: var(--accent); text-decoration: none; }
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 12px;
  line-height: 1.6;
}
.footer-contact-item svg {
  width: 18px; height: 18px;
  stroke: var(--accent);
  flex-shrink: 0;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  font-size: 12px;
  color: var(--text-dim);
  text-align: center;
}

/* Responsive */
@media (max-width: 1024px) {
  .container { padding: 0 20px; }
  .main-nav { margin-left: 0; }
  .header-search { width: 180px; }
  .hero-inner { gap: 40px; }
  .hero-card { max-width: 380px; }
  .bento-card { grid-column: span 6; }
  .bento-card.span-7, .bento-card.span-5 { grid-column: span 6; }
  .flow-grid { gap: 20px; }
  .flow-grid::before { left: 40px; right: 40px; }
  .faq-wrap { gap: 40px; grid-template-columns: 0.7fr 1.3fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 767px) {
  .site-header { height: 64px; }
  .header-inner { height: 64px; gap: 12px; }
  .logo-text { font-size: 16px; }
  .header-search {
    display: none;
    position: fixed;
    top: 72px;
    left: 16px;
    right: 16px;
    width: auto;
    z-index: 110;
    background: rgba(5, 16, 24, 0.98);
  }
  .site-header.open .header-search { display: flex; }
  .main-nav {
    display: none;
    position: fixed;
    top: 120px;
    left: 12px;
    right: 12px;
    background: rgba(5, 16, 24, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    z-index: 99;
  }
  .site-header.open .main-nav { display: flex; }
  .main-nav a {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 16px;
  }
  .main-nav a.active::after { display: none; }
  .main-nav a.active { background: var(--accent-light); }
  .header-login { display: none; }
  .header-register {
    padding: 9px 16px;
    font-size: 13px;
  }
  .burger { display: flex; }

  .sec-hero { padding: 120px 0 56px; }
  .hero-inner { grid-template-columns: 1fr; gap: 32px; }
  .hero-visual { order: -1; }
  .hero-card { max-width: 100%; }
  .hero-ctas .btn { width: 100%; }

  .sec-service, .sec-flow, .sec-scene, .sec-faq, .sec-cta { padding: 56px 0; }
  .bento-grid { grid-template-columns: 1fr; }
  .bento-card, .bento-card.span-5, .bento-card.span-7, .bento-card.span-12 { grid-column: span 1; }
  .data-strip { grid-template-columns: 1fr 1fr; gap: 16px; }
  .data-item:not(:first-child)::before { display: none; }
  .data-num { font-size: 32px; }
  .flow-grid { grid-template-columns: 1fr; gap: 16px; }
  .flow-grid::before { display: none; }
  .flow-step { display: flex; align-items: center; gap: 16px; text-align: left; padding: 0; }
  .flow-node { margin: 0; flex-shrink: 0; }
  .scene-block, .scene-block.reverse { grid-template-columns: 1fr; gap: 24px; }
  .scene-block.reverse .scene-img { order: 0; }
  .scene-block.reverse .scene-content { order: 1; }
  .scene-img img { height: 220px; }
  .faq-wrap { grid-template-columns: 1fr; gap: 24px; }
  .cta-box { padding: 40px 20px; }
  .cta-btns .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .flow-node { transition: none; }
}

/* roulang page: category4 */
:root {
            --bg-deep: #071A26;
            --bg-main: #0B2236;
            --brand: #0F3D5C;
            --primary: #22D3EE;
            --accent: #FF7849;
            --success: #34D399;
            --warning: #FBBF24;
            --text-main: #E6F2FF;
            --text-sub: #94A9C2;
            --text-dim: #5C7A99;
            --border: rgba(255, 255, 255, 0.08);
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.10);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
            --transition: 0.3s ease;
            --font-main: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Helvetica Neue", Arial, sans-serif;
            --font-num: "DIN Alternate", "Inter", "Bahnschrift", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: linear-gradient(160deg, var(--bg-deep) 0%, var(--bg-main) 100%);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }

        body.menu-open {
            overflow: hidden;
        }

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

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

        a:hover {
            color: #7FE8FA;
            text-decoration: underline;
        }

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

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: 96px 0;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 1px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .section-tag::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            display: inline-block;
        }

        .section-title {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-sub);
            max-width: 560px;
            line-height: 1.8;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            text-decoration: none !important;
            white-space: nowrap;
            outline-offset: 3px;
        }

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

        .btn-primary {
            background: linear-gradient(135deg, #FF8A5C 0%, #FF6A3D 100%);
            color: #0A1A24;
            box-shadow: 0 4px 20px rgba(255, 120, 73, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(255, 120, 73, 0.5);
            color: #081018;
            filter: brightness(1.06);
        }

        .btn-primary:active {
            transform: translateY(1px);
            filter: brightness(0.94);
        }

        .btn-secondary {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-secondary:hover {
            background: rgba(34, 211, 238, 0.1);
            border-color: #7FE8FA;
            color: #7FE8FA;
            transform: translateY(-1px);
        }

        .btn-lg {
            padding: 15px 38px;
            font-size: 16px;
        }

        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(34, 211, 238, 0.12);
            color: var(--primary);
            line-height: 1.6;
        }

        .badge-warm {
            background: rgba(255, 184, 77, 0.12);
            color: var(--warning);
        }

        .badge-green {
            background: rgba(52, 211, 153, 0.12);
            color: var(--success);
        }

        /* ===== Header Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            height: 72px;
            background: linear-gradient(to bottom, rgba(7, 26, 38, 0.92), rgba(7, 26, 38, 0.78));
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.35s ease, box-shadow 0.35s ease;
        }

        .site-header.scrolled {
            background: rgba(5, 18, 28, 0.96);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            text-decoration: none !important;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.2px;
            white-space: nowrap;
        }

        .logo-text::after {
            content: '';
            display: inline-block;
            width: 7px;
            height: 7px;
            background: var(--success);
            border-radius: 50%;
            margin-left: 7px;
            vertical-align: middle;
            box-shadow: 0 0 8px rgba(52, 211, 153, 0.8);
        }

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

        .main-nav a {
            color: var(--text-sub);
            font-size: 14px;
            font-weight: 500;
            padding: 9px 16px;
            border-radius: 999px;
            transition: color 0.25s ease, background 0.25s ease;
            text-decoration: none;
            position: relative;
            white-space: nowrap;
        }

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

        .main-nav a.active {
            color: var(--primary);
            background: rgba(34, 211, 238, 0.08);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            box-shadow: 0 0 10px rgba(34, 211, 238, 0.7);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 999px;
            padding: 7px 16px;
            width: 220px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .header-search svg {
            width: 16px;
            height: 16px;
            stroke: var(--text-dim);
            flex-shrink: 0;
        }

        .header-search input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-main);
            width: 100%;
            font-size: 13px;
        }

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

        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.15);
        }

        .header-login {
            color: var(--text-sub);
            font-size: 14px;
            font-weight: 500;
            text-decoration: none;
            transition: color 0.25s ease;
        }

        .header-login:hover {
            color: var(--text-main);
        }

        .header-register {
            padding: 9px 24px;
            font-size: 14px;
        }

        .burger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .burger span,
        .burger span::before,
        .burger span::after {
            content: '';
            display: block;
            width: 18px;
            height: 2px;
            border-radius: 2px;
            background: var(--text-main);
            transition: all 0.3s ease;
            position: absolute;
            left: 10px;
        }

        .burger span {
            top: 19px;
        }

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

        .burger span::after {
            top: 6px;
            left: 0;
        }

        .burger.open span {
            transform: rotate(45deg);
            background: var(--accent);
        }

        .burger.open span::before {
            top: 0;
            transform: rotate(90deg);
            background: var(--accent);
        }

        .burger.open span::after {
            top: 0;
            opacity: 0;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 180px 0 100px;
            background: linear-gradient(180deg, rgba(7, 26, 38, 0.88) 0%, rgba(7, 26, 38, 0.4) 50%, rgba(11, 34, 54, 0.9) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(34, 211, 238, 0.08) 0%, transparent 55%);
            pointer-events: none;
        }

        .hero-inner {
            display: flex;
            align-items: center;
            gap: 48px;
            position: relative;
            z-index: 2;
        }

        .hero-content {
            flex: 1;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 999px;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.2);
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 22px;
        }

        .hero-tag svg {
            width: 14px;
            height: 14px;
            stroke: var(--primary);
        }

        .hero h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
            color: #F0F8FF;
        }

        .hero h1 .highlight {
            color: var(--primary);
            position: relative;
        }

        .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-sub);
            max-width: 520px;
            margin-bottom: 32px;
        }

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

        .hero-trust {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-sub);
        }

        .trust-item svg {
            width: 16px;
            height: 16px;
            stroke: var(--success);
            flex-shrink: 0;
        }

        .hero-card {
            width: 380px;
            flex-shrink: 0;
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.02) 100%);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--glass-border);
            border-radius: 24px;
            padding: 32px;
            box-shadow: var(--shadow);
            position: relative;
        }

        .hero-card::before {
            content: '';
            position: absolute;
            top: -1px;
            left: 40px;
            right: 40px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.6), transparent);
        }

        .hero-card-icon {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background: rgba(34, 211, 238, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .hero-card-icon svg {
            width: 26px;
            height: 26px;
            stroke: var(--primary);
        }

        .hero-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: #F0F8FF;
            margin-bottom: 10px;
        }

        .hero-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .hero-card a {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .hero-card a:hover {
            color: #7FE8FA;
        }

        .hero-card a svg {
            width: 14px;
            height: 14px;
            stroke: currentColor;
            transition: transform 0.25s ease;
        }

        .hero-card a:hover svg {
            transform: translateX(4px);
        }

        /* ===== Topic Tags ===== */
        .topic-tags-section {
            padding: 64px 0 0;
        }

        .tags-scroll {
            display: flex;
            gap: 12px;
            flex-wrap: nowrap;
            overflow-x: auto;
            padding-bottom: 12px;
            scrollbar-width: thin;
            scrollbar-color: rgba(255, 255, 255, 0.1) transparent;
            -webkit-overflow-scrolling: touch;
        }

        .tags-scroll::-webkit-scrollbar {
            height: 4px;
        }

        .tags-scroll::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 4px;
        }

        .tag-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-sub);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .tag-btn:hover {
            color: var(--text-main);
            border-color: rgba(34, 211, 238, 0.3);
            background: rgba(34, 211, 238, 0.05);
        }

        .tag-btn.active {
            color: var(--primary);
            border-color: rgba(34, 211, 238, 0.35);
            background: rgba(34, 211, 238, 0.08);
            font-weight: 600;
        }

        /* ===== Quick Help ===== */
        .quick-help {
            padding: 64px 0;
        }

        .quick-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 36px;
        }

        .quick-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 28px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .quick-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: linear-gradient(180deg, var(--primary), transparent);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .quick-card:hover {
            border-color: rgba(34, 211, 238, 0.3);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.25);
            transform: translateY(-2px);
        }

        .quick-card:hover::before {
            opacity: 1;
        }

        .quick-card-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: rgba(34, 211, 238, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .quick-card-icon svg {
            width: 20px;
            height: 20px;
            stroke: var(--primary);
        }

        .quick-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }

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

        .quick-card a {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .quick-card a:hover {
            color: #7FE8FA;
        }

        .quick-card a svg {
            width: 13px;
            height: 13px;
            stroke: currentColor;
            transition: transform 0.25s ease;
        }

        .quick-card a:hover svg {
            transform: translateX(3px);
        }

        /* ===== FAQ Detail ===== */
        .faq-detail {
            padding: 40px 0 96px;
        }

        .faq-layout {
            display: grid;
            grid-template-columns: 40% 60%;
            gap: 48px;
            align-items: start;
        }

        .faq-sidebar {
            position: sticky;
            top: 96px;
        }

        .faq-sidebar .section-title {
            margin-bottom: 16px;
        }

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

        .faq-sidebar .contact-box {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 24px;
        }

        .contact-box h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .contact-box p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .contact-box .btn {
            width: 100%;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            transition: border-color 0.3s ease, background 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(34, 211, 238, 0.25);
        }

        .faq-item.open {
            border-color: rgba(34, 211, 238, 0.35);
            background: rgba(34, 211, 238, 0.03);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 22px 24px;
            cursor: pointer;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            transition: color 0.25s ease;
        }

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

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: transform 0.35s ease, border-color 0.35s ease, background 0.35s ease;
            position: relative;
        }

        .faq-question .faq-icon span {
            position: absolute;
            font-size: 16px;
            line-height: 1;
            color: var(--primary);
            font-weight: 400;
            transition: transform 0.35s ease;
        }

        .faq-question .faq-icon span.plus {
            opacity: 1;
            transform: rotate(0deg);
        }

        .faq-question .faq-icon span.minus {
            opacity: 0;
            transform: rotate(-90deg);
        }

        .faq-item.open .faq-question .faq-icon span.plus {
            opacity: 0;
            transform: rotate(90deg);
        }

        .faq-item.open .faq-question .faq-icon span.minus {
            opacity: 1;
            transform: rotate(0deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease, opacity 0.3s ease;
            opacity: 0;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            opacity: 1;
            padding: 0 24px 22px;
            transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease, opacity 0.4s ease 0.1s;
        }

        .faq-answer p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-sub);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 16px;
        }

        /* ===== Trouble Steps ===== */
        .trouble-steps {
            padding: 96px 0;
            position: relative;
            background: linear-gradient(180deg, rgba(15, 61, 92, 0.25) 0%, transparent 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .trouble-steps::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(7, 26, 38, 0.9) 0%, rgba(7, 26, 38, 0.75) 100%);
            pointer-events: none;
        }

        .trouble-steps .container {
            position: relative;
            z-index: 2;
        }

        .steps-title {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 32px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }

        .steps-title .section-desc {
            margin: 0;
            text-align: right;
        }

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

        .steps-timeline::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 40px;
            right: 40px;
            height: 2px;
            background: repeating-linear-gradient(90deg, rgba(34, 211, 238, 0.35) 0px, rgba(34, 211, 238, 0.35) 6px, transparent 6px, transparent 12px);
            border-radius: 2px;
            pointer-events: none;
        }

        .step-item {
            text-align: left;
            position: relative;
            padding-top: 0;
        }

        .step-node {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(145deg, rgba(34, 211, 238, 0.15), rgba(34, 211, 238, 0.05));
            border: 2px solid rgba(34, 211, 238, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-num);
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 24px;
            position: relative;
            z-index: 2;
            box-shadow: 0 0 24px rgba(34, 211, 238, 0.15);
        }

        .step-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.4;
        }

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

        /* ===== Service Entry ===== */
        .service-entry {
            padding: 96px 0;
        }

        .entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .entry-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .entry-card:hover {
            transform: translateY(-4px);
            border-color: rgba(34, 211, 238, 0.3);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.3);
        }

        .entry-card-img {
            height: 170px;
            overflow: hidden;
            position: relative;
        }

        .entry-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .entry-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(7, 26, 38, 0.85) 100%);
        }

        .entry-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .entry-card-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .entry-card-body p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .entry-card-body a {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .entry-card-body a:hover {
            color: #7FE8FA;
        }

        .entry-card-body a svg {
            width: 14px;
            height: 14px;
            stroke: currentColor;
            transition: transform 0.25s ease;
        }

        .entry-card-body a:hover svg {
            transform: translateX(3px);
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            padding: 0 0 96px;
        }

        .cta-card {
            background: linear-gradient(145deg, rgba(15, 61, 92, 0.5), rgba(7, 26, 38, 0.7));
            border: 1px solid rgba(34, 211, 238, 0.2);
            border-radius: 24px;
            padding: 56px 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            position: relative;
            overflow: hidden;
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.06);
            pointer-events: none;
        }

        .cta-card::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: 20%;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(255, 120, 73, 0.05);
            pointer-events: none;
        }

        .cta-content {
            flex: 1;
            position: relative;
            z-index: 2;
        }

        .cta-content h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .cta-content p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.7;
            max-width: 460px;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            flex-shrink: 0;
            position: relative;
            z-index: 2;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #050F18;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 72px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 56px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.8;
            margin-top: 16px;
            max-width: 280px;
        }

        .footer-col h3 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-sub);
            line-height: 2.4;
            text-decoration: none;
            transition: color 0.25s ease;
        }

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

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .footer-contact-item svg {
            width: 17px;
            height: 17px;
            stroke: var(--primary);
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 22px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 12px;
            color: var(--text-dim);
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-up {
            opacity: 0;
            animation: fadeUp 0.7s ease forwards;
        }

        .delay-1 {
            animation-delay: 0.1s;
        }

        .delay-2 {
            animation-delay: 0.2s;
        }

        .delay-3 {
            animation-delay: 0.3s;
        }

        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .main-nav {
                display: none;
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(7, 26, 38, 0.98);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                align-items: stretch;
                padding: 20px 24px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                gap: 4px;
            }

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

            .main-nav a {
                padding: 14px 16px;
                border-radius: 12px;
                font-size: 15px;
            }

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

            .main-nav a.active {
                background: rgba(34, 211, 238, 0.08);
            }

            .header-search {
                display: none;
            }

            .burger {
                display: flex;
            }

            .hero {
                padding: 140px 0 70px;
            }

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

            .hero-card {
                width: 100%;
                max-width: 480px;
            }

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

            .faq-sidebar {
                position: static;
            }

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

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

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

            .cta-card {
                flex-direction: column;
                padding: 40px;
                text-align: center;
            }

            .cta-content p {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }

            .cta-actions {
                justify-content: center;
            }

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

        @media (max-width: 767px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }

            .section {
                padding: 64px 0;
            }

            .logo-text {
                font-size: 16px;
            }

            .header-register {
                display: none;
            }

            .hero {
                padding: 120px 0 60px;
            }

            .hero h1 {
                font-size: clamp(1.9rem, 7vw, 2.6rem);
            }

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

            .hero-actions {
                flex-direction: column;
            }

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

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

            .faq-question {
                padding: 18px 18px;
                font-size: 15px;
            }

            .faq-item.open .faq-answer {
                padding: 0 18px 18px;
            }

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

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

            .cta-card {
                padding: 32px 24px;
            }

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

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

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

            .steps-title {
                flex-direction: column;
                align-items: flex-start;
            }

            .steps-title .section-desc {
                text-align: left;
            }
        }

        @media (max-width: 480px) {
            .header-login {
                font-size: 13px;
            }

            .hero-card {
                padding: 24px;
            }

            .faq-question .faq-icon {
                width: 24px;
                height: 24px;
            }

            .entry-card-img {
                height: 140px;
            }
        }

/* roulang page: category3 */
:root {
  --bg-deep: #071A26;
  --bg-body: #0B2236;
  --brand: #0F3D5C;
  --cyan: #22D3EE;
  --orange: #FF7849;
  --green: #34D399;
  --yellow: #FBBF24;
  --text-main: #E6F2FF;
  --text-secondary: #94A9C2;
  --text-muted: #5C7A99;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.12);
  --glass-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.35);
  --shadow-cyan: 0 0 24px rgba(34, 211, 238, 0.15);
  --shadow-orange: 0 6px 24px rgba(255, 120, 73, 0.35);
  --font-main: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Helvetica Neue", sans-serif;
  --transition: all 0.3s ease;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
body {
  font-family: var(--font-main);
  line-height: 1.6;
  color: var(--text-main);
  background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-body) 100%);
  min-height: 100vh;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--cyan);
  text-decoration: none;
  transition: var(--transition);
}
a:hover {
  color: #7FECFB;
  text-decoration: underline;
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
input,
select,
textarea {
  font-family: inherit;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover {
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, #FF8A5C, #FF6A3D);
  color: #0B161F;
  box-shadow: var(--shadow-orange);
}
.btn-primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
  box-shadow: 0 8px 30px rgba(255, 120, 73, 0.45);
  color: #0B161F;
}
.btn-primary:active {
  transform: translateY(0);
  filter: brightness(0.95);
}
.btn-outline {
  background: transparent;
  border-color: rgba(34, 211, 238, 0.6);
  color: var(--cyan);
}
.btn-outline:hover {
  background: rgba(34, 211, 238, 0.1);
  color: #7FECFB;
  transform: translateY(-2px);
}
.btn-outline:active {
  transform: translateY(0);
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--cyan);
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}
.section-tag::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--cyan);
  border-radius: 2px;
  box-shadow: 0 0 6px rgba(34, 211, 238, 0.5);
}
/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  z-index: 1000;
  background: linear-gradient(135deg, rgba(7, 26, 38, 0.75), rgba(11, 34, 54, 0.6));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.site-header.scrolled {
  background: rgba(7, 26, 38, 0.88);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
}
.header-inner {
  display: flex;
  align-items: center;
  height: 72px;
  gap: 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-main);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}
.logo:hover {
  color: var(--text-main);
  text-decoration: none;
}
.logo-text {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.main-nav {
  display: flex;
  gap: 6px;
  margin-left: auto;
}
.main-nav a {
  color: var(--text-secondary);
  font-size: 15px;
  padding: 8px 14px;
  border-radius: 999px;
  transition: var(--transition);
  position: relative;
  text-decoration: none;
  white-space: nowrap;
}
.main-nav a:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.04);
  text-decoration: none;
}
.main-nav a.active {
  color: var(--text-main);
  background: rgba(34, 211, 238, 0.10);
}
.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--cyan);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(34, 211, 238, 0.5);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0 14px;
  height: 38px;
  width: 220px;
  transition: var(--transition);
}
.header-search:focus-within {
  border-color: rgba(34, 211, 238, 0.5);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
}
.header-search svg {
  width: 16px;
  height: 16px;
  stroke: var(--text-muted);
  flex-shrink: 0;
}
.header-search input {
  background: none;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 14px;
  width: 100%;
}
.header-search input::placeholder {
  color: var(--text-muted);
}
.header-login {
  color: var(--text-secondary);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
}
.header-login:hover {
  color: var(--cyan);
  text-decoration: none;
}
.header-register {
  padding: 8px 18px;
  font-size: 14px;
}
.mobile-search {
  display: none;
}
.burger {
  display: none;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  position: relative;
  flex-shrink: 0;
}
.burger span,
.burger span::before,
.burger span::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: var(--transition);
}
.burger span {
  top: 50%;
  transform: translateY(-50%);
}
.burger span::before {
  top: -7px;
}
.burger span::after {
  top: 7px;
}
.burger.open span {
  background: transparent;
}
.burger.open span::before {
  transform: rotate(45deg);
  top: 0;
}
.burger.open span::after {
  transform: rotate(-45deg);
  top: 0;
}
/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 180px 0 100px;
  min-height: 640px;
  display: flex;
  align-items: center;
  background-image: linear-gradient(180deg, rgba(7, 26, 38, 0.92) 0%, rgba(11, 34, 54, 0.82) 55%, rgba(11, 34, 54, 0.96) 100%), url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 72% 30%, rgba(34, 211, 238, 0.15), transparent 60%);
  pointer-events: none;
}
.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 60px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.hero-sub {
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: 32px;
}
.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.hero-trust {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  color: var(--text-secondary);
}
.trust-badge svg {
  width: 15px;
  height: 15px;
  stroke: var(--green);
  flex-shrink: 0;
}
.hero-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
}
.hero-card-head {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--text-main);
}
.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px rgba(52, 211, 153, 0.6);
}
.status-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.status-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
}
.status-value {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 4px;
}
.status-value .green {
  color: var(--green);
}
.status-label {
  font-size: 13px;
  color: var(--text-muted);
}
.hero-card-note {
  margin-top: 20px;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}
/* ===== Section ===== */
.section {
  padding: 96px 0;
  position: relative;
}
.section-alt {
  background: rgba(7, 26, 38, 0.5);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section-header {
  margin-bottom: 48px;
}
.section-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.section-desc {
  color: var(--text-secondary);
  max-width: 640px;
  font-size: 15px;
  line-height: 1.8;
}
/* ===== Bento Grid ===== */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}
.bento-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.bento-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle at top right, rgba(34, 211, 238, 0.06), transparent 70%);
  pointer-events: none;
}
.bento-card:hover {
  border-color: rgba(34, 211, 238, 0.4);
  box-shadow: var(--shadow-cyan);
  transform: translateY(-2px);
}
.bento-card .icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(34, 211, 238, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.bento-card .icon svg {
  width: 22px;
  height: 22px;
  color: var(--cyan);
}
.bento-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  font-weight: 700;
}
.bento-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 16px;
}
.bento-card .more {
  color: var(--cyan);
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  text-decoration: none;
}
.bento-card .more:hover {
  text-decoration: underline;
  color: #7FECFB;
}
.span-7 {
  grid-column: span 7;
}
.span-5 {
  grid-column: span 5;
}
.span-12 {
  grid-column: span 12;
}
.bento-wide-inner {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: 32px;
  align-items: start;
}
.bento-divider {
  width: 1px;
  background: var(--border);
  align-self: stretch;
}
/* ===== Timeline ===== */
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
}
.timeline::before {
  content: "";
  position: absolute;
  top: 24px;
  left: 24px;
  right: 24px;
  height: 2px;
  background: repeating-linear-gradient(90deg, rgba(34, 211, 238, 0.4) 0 6px, transparent 6px 12px);
  border-radius: 2px;
}
.timeline-step {
  position: relative;
  padding-top: 72px;
}
.timeline-step .node {
  position: absolute;
  top: 0;
  left: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(34, 211, 238, 0.15);
  border: 1px solid rgba(34, 211, 238, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--cyan);
  box-shadow: 0 0 16px rgba(34, 211, 238, 0.3);
  z-index: 2;
  font-size: 18px;
}
.timeline-step h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  font-weight: 700;
}
.timeline-step p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
}
/* ===== Split ===== */
.split-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.split-row + .split-row {
  margin-top: 96px;
}
.split-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  aspect-ratio: 4/3;
}
.split-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.split-row.reverse .split-media {
  order: 2;
}
.split-row.reverse .split-content {
  order: 1;
}
.split-label {
  font-size: 13px;
  color: var(--yellow);
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.split-label::before {
  content: "";
  width: 16px;
  height: 2px;
  background: var(--yellow);
  border-radius: 2px;
}
.split-content h3 {
  font-size: 1.5rem;
  line-height: 1.3;
  margin-bottom: 16px;
  font-weight: 800;
}
.split-content p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}
.split-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.split-points li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--text-secondary);
  font-size: 15px;
}
.split-points li svg {
  width: 16px;
  height: 16px;
  color: var(--green);
  flex-shrink: 0;
  margin-top: 4px;
}
/* ===== Stats ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
}
.stat-item {
  padding: 40px 24px;
  text-align: center;
  position: relative;
}
.stat-item + .stat-item {
  border-left: 1px solid var(--border);
}
.stat-value {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.1;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.stat-value span {
  color: var(--cyan);
}
.stat-label {
  color: var(--text-muted);
  font-size: 14px;
}
/* ===== Related ===== */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 12px;
  color: var(--text-main);
}
.related-item:hover {
  border-color: rgba(34, 211, 238, 0.4);
  transform: translateY(-2px);
  box-shadow: var(--shadow-cyan);
  color: var(--text-main);
  text-decoration: none;
}
.related-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
}
.related-item p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  flex-grow: 1;
}
.related-item .link {
  color: var(--cyan);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.related-item .link svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
}
/* ===== FAQ ===== */
.faq-wrap {
  display: grid;
  grid-template-columns: 4fr 6fr;
  gap: 60px;
}
.faq-left h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}
.faq-left > p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 28px;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.02);
  transition: var(--transition);
}
.faq-item.active {
  border-color: rgba(34, 211, 238, 0.3);
  background: rgba(34, 211, 238, 0.03);
}
.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  color: var(--text-main);
  font-size: 16px;
  font-weight: 600;
  padding: 22px 24px;
  text-align: left;
  gap: 16px;
  border-radius: var(--radius-sm);
}
.faq-q:hover {
  color: var(--cyan);
}
.faq-icon {
  font-size: 22px;
  color: var(--cyan);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  line-height: 1;
  font-weight: 400;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-a-inner {
  padding: 0 24px 0;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  border-top: 1px solid transparent;
}
.faq-item.active .faq-a-inner {
  padding-top: 16px;
  padding-bottom: 22px;
  border-top-color: var(--border);
}
/* ===== CTA ===== */
.cta-section {
  padding: 96px 0;
  position: relative;
}
.cta-box {
  background: linear-gradient(135deg, rgba(15, 61, 92, 0.6), rgba(7, 26, 38, 0.88));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 100%, rgba(34, 211, 238, 0.15), transparent 70%);
  pointer-events: none;
}
.cta-box h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 16px;
  position: relative;
}
.cta-box p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
  position: relative;
  line-height: 1.8;
}
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}
/* ===== Footer ===== */
.site-footer {
  background: #050F18;
  border-top: 1px solid var(--border);
  padding: 72px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 56px;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
  margin-top: 16px;
  max-width: 320px;
}
.footer-col h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-main);
}
.footer-col a {
  display: block;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 2.4;
  text-decoration: none;
  transition: var(--transition);
}
.footer-col a:hover {
  color: var(--cyan);
  text-decoration: none;
}
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 12px;
}
.footer-contact-item svg {
  width: 16px;
  height: 16px;
  stroke: var(--cyan);
  flex-shrink: 0;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p {
  color: var(--text-muted);
  font-size: 13px;
}
/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .main-nav {
    display: flex;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(7, 26, 38, 0.97);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    flex-direction: column;
    padding: 24px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    transition: transform 0.3s ease;
    z-index: 999;
    margin-left: 0;
  }
  .main-nav.open {
    transform: translateY(0);
  }
  .main-nav a {
    padding: 14px 16px;
    font-size: 16px;
    border-radius: var(--radius-sm);
  }
  .main-nav a.active {
    background: rgba(34, 211, 238, 0.1);
  }
  .main-nav a.active::after {
    display: none;
  }
  .mobile-search {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0 14px;
    height: 40px;
    margin-bottom: 12px;
  }
  .mobile-search svg {
    width: 16px;
    height: 16px;
    stroke: var(--text-muted);
    flex-shrink: 0;
  }
  .mobile-search input {
    background: none;
    border: none;
    outline: none;
    color: var(--text-main);
    font-size: 14px;
    width: 100%;
  }
  .header-search {
    display: none;
  }
  .burger {
    display: block;
  }
  .hero {
    padding: 160px 0 80px;
    min-height: auto;
  }
  .hero .container {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-card {
    max-width: 460px;
  }
  .section {
    padding: 72px 0;
  }
  .span-7,
  .span-5 {
    grid-column: span 12;
  }
  .bento-wide-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .bento-divider {
    display: none;
  }
  .timeline {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
  .timeline::before {
    display: none;
  }
  .timeline-step {
    padding-top: 0;
    padding-left: 60px;
  }
  .timeline-step .node {
    left: 0;
    top: 0;
  }
  .split-row {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .split-row + .split-row {
    margin-top: 72px;
  }
  .split-row.reverse .split-media {
    order: 2;
  }
  .split-row.reverse .split-content {
    order: 1;
  }
  .split-row.reverse {
    display: flex;
    flex-direction: column;
  }
  .split-row.reverse .split-media {
    order: -1;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-item + .stat-item {
    border-left: none;
  }
  .stat-item:nth-child(odd) {
    border-left: none;
  }
  .stat-item:nth-child(2) {
    border-left: 1px solid var(--border);
  }
  .stat-item:nth-child(n+3) {
    border-top: 1px solid var(--border);
  }
  .related-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .faq-wrap {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}
@media (max-width: 767px) {
  .container {
    padding: 0 16px;
  }
  .hero {
    padding: 130px 0 64px;
  }
  .hero-cta {
    flex-direction: column;
  }
  .hero-cta .btn {
    width: 100%;
  }
  .header-login {
    display: none;
  }
  .section {
    padding: 64px 0;
  }
  .timeline {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .split-row + .split-row {
    margin-top: 56px;
  }
  .split-media {
    aspect-ratio: 16/10;
  }
  .split-content h3 {
    font-size: 1.3rem;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .stat-item + .stat-item,
  .stat-item:nth-child(2),
  .stat-item:nth-child(n+3) {
    border-left: none;
    border-top: 1px solid var(--border);
  }
  .stat-item:first-child {
    border-top: none;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .cta-box {
    padding: 40px 24px;
  }
  .cta-buttons {
    flex-direction: column;
  }
  .cta-buttons .btn {
    width: 100%;
  }
  .faq-q {
    padding: 18px 16px;
    font-size: 15px;
  }
  .faq-a-inner {
    padding: 0 16px 0;
  }
  .faq-item.active .faq-a-inner {
    padding: 14px 16px 20px;
  }
}