/* roulang page: index */
/* ============ 设计变量 ============ */
:root {
  --bg-primary: #0B1220;
  --bg-alt: #0F1B2C;
  --bg-deep: #081120;
  --grad-start: #0D2B45;
  --grad-end: #1B3A5C;
  --accent-cyan: #00D4FF;
  --accent-amber: #FFB800;
  --text-main: #E6EDF3;
  --text-sub: #9FB0C3;
  --text-dim: #6B7D91;
  --border-color: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-cyan: 0 0 24px rgba(0, 212, 255, 0.35);
  --shadow-cyan-hover: 0 0 36px rgba(0, 212, 255, 0.45);
  --container-max: 1200px;
  --section-pad: 88px 0;
  --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", sans-serif;
  --transition: all 0.25s ease;
}

/* ============ Reset / Base ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 15px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-cyan); text-decoration: none; transition: var(--transition); }
a:hover { color: #fff; }
ul, ol { list-style: none; }
button, input { font-family: inherit; font-size: 100%; border: none; outline: none; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 32px; }
section { padding: var(--section-pad); }
::selection { background: rgba(0, 212, 255, 0.25); }

/* ============ 导航 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(8, 17, 32, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  height: 64px;
  border-bottom: 1px solid rgba(0, 212, 255, 0.15);
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}
.site-header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--accent-cyan), transparent 60%);
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}
.brand-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent-cyan), #0088aa);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: #0B1220;
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.35);
}
.brand-logo span {
  background: linear-gradient(90deg, #fff, var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-links { display: flex; align-items: center; gap: 6px; list-style: none; }
.nav-links li a {
  display: inline-block;
  padding: 8px 18px;
  color: var(--text-sub);
  font-size: 14px;
  font-weight: 500;
  border-radius: 8px;
  transition: var(--transition);
  position: relative;
}
.nav-links li a:hover {
  color: var(--text-main);
  background: rgba(0, 212, 255, 0.06);
}
.nav-links li.active a {
  color: var(--accent-cyan);
  text-shadow: 0 0 12px rgba(0, 212, 255, 0.5);
}
.nav-links li.active a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 18px;
  right: 18px;
  height: 2px;
  background: var(--accent-cyan);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.8);
}
.nav-cta {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent-cyan), #00A6CC);
  color: #0B1220 !important;
  font-weight: 600;
  padding: 8px 22px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  box-shadow: var(--shadow-cyan);
  transition: var(--transition);
  margin-left: 8px;
}
.nav-cta:hover {
  box-shadow: var(--shadow-cyan-hover);
  transform: translateY(-1px);
}
.hamburger { display: none; background: none; font-size: 24px; color: #fff; cursor: pointer; }

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--grad-start) 55%, var(--grad-end) 100%);
  overflow: hidden;
  padding-top: 64px;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.15), transparent 65%);
  pointer-events: none;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.3;
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; display: flex; align-items: center; gap: 60px; }
.hero-content { flex: 1.2; }
.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--glass-bg);
  border: 1px solid rgba(0, 212, 255, 0.2);
  color: var(--accent-cyan);
  padding: 6px 16px;
  border-radius: 40px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 20px;
}
.hero h1 .highlight {
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-amber));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 18px;
  color: var(--text-sub);
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: 32px;
}
.hero-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 32px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), #0088AA);
  color: #0B1220 !important;
  box-shadow: var(--shadow-cyan);
}
.btn-primary:hover {
  box-shadow: var(--shadow-cyan-hover);
  transform: translateY(-2px);
  color: #0B1220 !important;
}
.btn-outline {
  background: transparent;
  color: var(--accent-cyan) !important;
  border: 1px solid var(--accent-cyan);
}
.btn-outline:hover {
  background: rgba(0, 212, 255, 0.08);
  transform: translateY(-2px);
  color: #fff !important;
}
.btn:focus, .nav-cta:focus, .btn-outline:focus {
  outline: 2px solid rgba(0, 212, 255, 0.4);
  outline-offset: 2px;
}
.hero-side { flex: 0.8; }
.hero-glass-card {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
}
.hero-glass-card h3 {
  font-size: 16px;
  color: var(--text-main);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-glass-card h3 i { color: var(--accent-cyan); }
.glass-stats { display: grid; gap: 20px; }
.glass-stat { display: flex; align-items: center; gap: 14px; }
.glass-stat .gs-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  background: rgba(0, 212, 255, 0.12);
  color: var(--accent-cyan);
  flex-shrink: 0;
}
.glass-stat .gs-num { font-size: 22px; font-weight: 700; color: #fff; line-height: 1.2; }
.glass-stat .gs-label { font-size: 13px; color: var(--text-sub); }

/* ============ 品牌故事 ============ */
.brand-story { background: var(--bg-alt); }
.brand-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items: center; }
.brand-text .eyebrow {
  color: var(--accent-cyan);
  font-size: 13px;
  letter-spacing: 0.08em;
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand-text h2 { font-size: 30px; font-weight: 700; color: #fff; margin-bottom: 20px; letter-spacing: -0.01em; }
.brand-text p { color: var(--text-sub); margin-bottom: 16px; line-height: 1.8; }
.brand-image {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.brand-image img { width: 100%; height: 400px; object-fit: cover; }
.brand-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0, 212, 255, 0.1));
  border-radius: 20px;
}
.glass-points { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 36px; }
.glass-point {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
}
.glass-point:hover { border-color: rgba(0, 212, 255, 0.3); transform: translateY(-3px); }
.glass-point .gp-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  background: rgba(0, 212, 255, 0.12);
  color: var(--accent-cyan);
  margin-bottom: 14px;
}
.glass-point h4 { font-size: 16px; color: #fff; margin-bottom: 8px; font-weight: 600; }
.glass-point p { font-size: 14px; color: var(--text-sub); line-height: 1.7; margin: 0; }

/* ============ 精选内容 ============ */
.featured-section { background: var(--bg-primary); }
.featured-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 44px; }
.featured-head .eyebrow { color: var(--accent-cyan); font-size: 13px; letter-spacing: 0.08em; font-weight: 600; margin-bottom: 12px; }
.featured-head h2 { font-size: 30px; font-weight: 700; color: #fff; }
.featured-head p { color: var(--text-sub); font-size: 15px; max-width: 420px; }
.featured-grid { display: grid; grid-template-columns: repeat(6, 1fr); grid-template-rows: auto auto; gap: 24px; }
.featured-card {
  position: relative;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.featured-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}
.featured-card.featured-main { grid-column: span 4; grid-row: span 2; }
.featured-card.featured-side { grid-column: span 2; }
.featured-card.featured-bottom { grid-column: span 3; }
.featured-card .fc-img { overflow: hidden; position: relative; }
.featured-card.featured-main .fc-img img { height: 300px; }
.featured-card.featured-side .fc-img img { height: 180px; }
.featured-card.featured-bottom .fc-img img { height: 180px; }
.featured-card .fc-img img { width: 100%; object-fit: cover; transition: transform 0.4s ease; }
.featured-card:hover .fc-img img { transform: scale(1.05); }
.featured-card .fc-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0, 212, 255, 0.08));
}
.featured-card .fc-body { padding: 22px 24px; flex: 1; display: flex; flex-direction: column; }
.fc-tag {
  display: inline-block;
  background: rgba(0, 212, 255, 0.12);
  color: var(--accent-cyan);
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 30px;
  margin-bottom: 12px;
  align-self: flex-start;
  letter-spacing: 0.03em;
}
.featured-main .fc-body h3 { font-size: 20px; }
.featured-side .fc-body h3, .featured-bottom .fc-body h3 { font-size: 17px; }
.featured-card .fc-body h3 { color: #fff; line-height: 1.45; margin-bottom: 10px; font-weight: 600; }
.featured-card .fc-body p { color: var(--text-sub); font-size: 14px; line-height: 1.7; margin-bottom: 16px; }
.fc-link {
  margin-top: auto;
  color: var(--accent-cyan);
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.fc-link i { font-size: 12px; transition: transform 0.3s; }
.fc-link:hover i { transform: translateX(4px); }
.fc-link:hover { color: #fff; }

/* ============ 最新动态 CMS ============ */
.news-section { background: var(--bg-alt); position: relative; }
.news-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.25), transparent);
}
.news-head { text-align: center; margin-bottom: 56px; }
.news-head .eyebrow { color: var(--accent-cyan); font-size: 13px; letter-spacing: 0.08em; font-weight: 600; margin-bottom: 12px; }
.news-head h2 { font-size: 30px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.news-head p { color: var(--text-sub); max-width: 520px; margin: 0 auto; }
.news-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 32px; align-items: start; }
.news-feature {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.news-feature:hover { border-color: rgba(0, 212, 255, 0.3); transform: translateY(-4px); }
.news-feature .nf-img { width: 100%; height: 240px; object-fit: cover; }
.news-feature .nf-body { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.news-feature .nf-body h3 { font-size: 20px; color: #fff; line-height: 1.5; margin-bottom: 12px; }
.news-feature .nf-body h3 a { color: #fff; }
.news-feature .nf-body h3 a:hover { color: var(--accent-cyan); }
.news-feature .nf-body p { color: var(--text-sub); font-size: 14px; line-height: 1.7; margin-bottom: 18px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.nf-meta { margin-top: auto; display: flex; align-items: center; gap: 14px; }
.badge {
  display: inline-block;
  background: rgba(0, 212, 255, 0.14);
  color: var(--accent-cyan);
  font-size: 12px;
  padding: 4px 14px;
  border-radius: 30px;
  font-weight: 500;
  letter-spacing: 0.03em;
}
.time-text { color: var(--accent-amber); font-size: 13px; display: flex; align-items: center; gap: 6px; }
.news-list { display: flex; flex-direction: column; gap: 0; }
.news-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  padding: 22px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: var(--glass-bg);
  border-radius: 12px;
  margin-bottom: 12px;
  transition: var(--transition);
  align-items: start;
}
.news-item:last-child { margin-bottom: 0; }
.news-item:hover { background: rgba(0, 212, 255, 0.06); border-color: rgba(0, 212, 255, 0.2); }
.news-item .ni-time { color: var(--accent-amber); font-size: 13px; font-weight: 500; padding-top: 4px; }
.news-item .ni-body h4 { font-size: 15px; color: #fff; line-height: 1.5; margin-bottom: 4px; }
.news-item .ni-body h4 a { color: #fff; }
.news-item .ni-body h4 a:hover { color: var(--accent-cyan); }
.news-item .ni-body p { font-size: 13px; color: var(--text-dim); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; margin: 0; }
.news-empty {
  text-align: center;
  color: var(--text-sub);
  padding: 60px 20px;
  background: var(--glass-bg);
  border: 1px dashed rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  font-size: 15px;
}

/* ============ 信任背书 ============ */
.trust-section { background: var(--bg-primary); }
.trust-head { text-align: center; margin-bottom: 50px; }
.trust-head .eyebrow { color: var(--accent-cyan); font-size: 13px; letter-spacing: 0.08em; font-weight: 600; margin-bottom: 12px; }
.trust-head h2 { font-size: 30px; font-weight: 700; color: #fff; }
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.trust-item {
  text-align: center;
  padding: 40px 28px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.trust-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-cyan), transparent);
  opacity: 0.6;
}
.trust-item:hover { transform: translateY(-4px); background: rgba(255, 255, 255, 0.07); }
.trust-item .trust-icon { font-size: 30px; color: var(--accent-cyan); margin-bottom: 16px; }
.trust-item .trust-num { font-size: 40px; font-weight: 700; color: var(--accent-amber); line-height: 1.2; margin-bottom: 8px; }
.trust-item h4 { font-size: 16px; color: #fff; margin-bottom: 10px; font-weight: 600; }
.trust-item p { font-size: 14px; color: var(--text-sub); line-height: 1.7; margin: 0; }

/* ============ FAQ ============ */
.faq-section { background: var(--bg-alt); }
.faq-head { text-align: center; margin-bottom: 44px; }
.faq-head .eyebrow { color: var(--accent-cyan); font-size: 13px; letter-spacing: 0.08em; font-weight: 600; margin-bottom: 12px; }
.faq-head h2 { font-size: 30px; font-weight: 700; color: #fff; }
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.faq-item:first-child { border-top: 1px solid rgba(255, 255, 255, 0.08); }
.faq-question {
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  gap: 16px;
  transition: var(--transition);
}
.faq-question:hover { color: var(--accent-cyan); }
.faq-question::before {
  content: "";
  width: 3px;
  height: 0;
  background: var(--accent-cyan);
  border-radius: 2px;
  transition: height 0.3s ease;
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.6);
  margin-right: 12px;
}
.faq-item.active .faq-question::before { height: 22px; }
.faq-question .faq-icon { flex-shrink: 0; font-size: 16px; color: var(--accent-cyan); transition: transform 0.3s ease; }
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-answer-inner { padding: 0 0 22px 15px; color: var(--text-sub); font-size: 14px; line-height: 1.8; }

/* ============ 订阅 CTA ============ */
.subscribe-section { background: var(--bg-primary); position: relative; }
.subscribe-card {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 24px;
  padding: 56px 48px;
}
.subscribe-card .sub-icon { font-size: 36px; color: var(--accent-cyan); margin-bottom: 16px; }
.subscribe-card h2 { font-size: 28px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.subscribe-card p { color: var(--text-sub); max-width: 480px; margin: 0 auto 28px; }
.subscribe-form { display: flex; gap: 12px; max-width: 480px; margin: 0 auto; }
.subscribe-form input[type="email"] {
  flex: 1;
  height: 46px;
  background: var(--bg-primary);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 0 18px;
  color: var(--text-main);
  font-size: 15px;
  transition: var(--transition);
}
.subscribe-form input[type="email"]::placeholder { color: var(--text-dim); }
.subscribe-form input[type="email"]:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.2);
  outline: none;
}
.subscribe-form .btn-subscribe {
  height: 46px;
  background: linear-gradient(135deg, var(--accent-cyan), #0088AA);
  color: #0B1220 !important;
  font-weight: 600;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 15px;
  transition: var(--transition);
  box-shadow: var(--shadow-cyan);
  white-space: nowrap;
}
.subscribe-form .btn-subscribe:hover { box-shadow: var(--shadow-cyan-hover); transform: translateY(-1px); }

/* ============ 页脚 ============ */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(0, 212, 255, 0.2);
  padding: 64px 0 28px;
}
.site-footer::before {
  content: "";
  display: block;
  height: 1px;
  background: linear-gradient(90deg, var(--accent-cyan), transparent);
  margin-bottom: 48px;
}
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; }
.footer-brand p { color: var(--text-sub); font-size: 14px; line-height: 1.7; margin-top: 14px; }
.footer-col h4 {
  font-size: 15px;
  color: #fff;
  font-weight: 600;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--accent-cyan);
  border-radius: 2px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: var(--text-sub); font-size: 14px; }
.footer-col ul li a:hover { color: var(--accent-cyan); }
.footer-contact { display: flex; flex-direction: column; gap: 12px; }
.footer-contact p { color: var(--text-sub); font-size: 14px; display: flex; align-items: center; gap: 10px; }
.footer-contact p i { color: var(--accent-cyan); width: 18px; text-align: center; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 24px;
  margin-top: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-dim);
  font-size: 13px;
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .brand-grid { grid-template-columns: 1fr; gap: 40px; }
  .brand-image img { height: 320px; }
  .featured-main { grid-column: span 6 !important; }
  .featured-side { grid-column: span 3 !important; }
  .featured-bottom { grid-column: span 6 !important; }
  .news-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero .container { flex-direction: column; gap: 40px; }
  .hero-content { text-align: center; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero { min-height: auto; padding: 120px 0 80px; }
  .hero-side { width: 100%; max-width: 480px; }
  .hero-glass-card { max-width: 480px; margin: 0 auto; }
}

@media (max-width: 640px) {
  :root { --section-pad: 64px 0; }
  .container { padding: 0 20px; }
  .site-header { padding: 0 16px; }
  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    width: 100%;
    background: rgba(8, 17, 32, 0.98);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 20px;
    gap: 4px;
    display: none;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
    z-index: 999;
  }
  .nav-links.open { display: flex; }
  .nav-links li a { display: block; width: 100%; padding: 12px 14px; font-size: 15px; }
  .nav-cta { width: 100%; margin: 8px 0 0; text-align: center; }
  .hamburger { display: block; }
  .hero h1 { font-size: 30px; }
  .hero-sub { font-size: 16px; }
  .brand-text h2 { font-size: 24px; }
  .featured-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .featured-grid { grid-template-columns: 1fr; }
  .featured-card.featured-main, .featured-card.featured-side, .featured-card.featured-bottom { grid-column: auto; }
  .featured-card.featured-main .fc-img img { height: 220px; }
  .glass-points { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: 1fr; }
  .subscribe-card { padding: 40px 20px; }
  .subscribe-form { flex-direction: column; }
  .subscribe-form .btn-subscribe { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .news-item { grid-template-columns: 1fr; gap: 6px; }
  .brand-image img { height: 260px; }
  .news-feature .nf-img { height: 200px; }
}

@media (max-width: 520px) {
  body { font-size: 14px; }
  .btn { padding: 12px 24px; font-size: 14px; width: 100%; justify-content: center; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
}

/* roulang page: article */
:root {
  --bg-primary: #0B1220;
  --bg-secondary: #0F1B2C;
  --bg-header: #081120;
  --accent: #00D4FF;
  --accent-dim: rgba(0, 212, 255, 0.08);
  --accent-secondary: #FFB800;
  --text-primary: #E6EDF3;
  --text-secondary: #9FB0C3;
  --text-muted: #6B7D91;
  --border: rgba(255, 255, 255, 0.08);
  --glass: rgba(255, 255, 255, 0.04);
  --glass-strong: rgba(255, 255, 255, 0.07);
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-img: 12px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 24px rgba(0, 212, 255, 0.35);
  --shadow-glow-strong: 0 0 36px rgba(0, 212, 255, 0.45);
  --container-width: 1200px;
  --font-stack: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-stack);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: #33dfff; }
ul, ol { list-style: none; }
button, input { font-family: inherit; }

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 40px;
}

/* ========== Header / Nav ========== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--bg-header);
  height: 64px;
  border-bottom: 1px solid rgba(0, 212, 255, 0.18);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}
.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 40px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.brand-logo:hover { color: var(--text-primary); }
.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  background: linear-gradient(135deg, #00D4FF, #1B3A5C);
  border-radius: 10px;
  color: #fff;
  font-size: 16px;
  box-shadow: 0 0 14px rgba(0, 212, 255, 0.25);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links li {
  position: relative;
}
.nav-links a:not(.nav-cta) {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}
.nav-links a:not(.nav-cta):hover {
  background: rgba(0, 212, 255, 0.06);
  color: var(--text-primary);
}
.nav-links li.active a:not(.nav-cta) {
  color: var(--accent);
  text-shadow: 0 0 12px rgba(0, 212, 255, 0.4);
}
.nav-links li.active a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  left: 16px; right: 16px; bottom: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.6);
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 9px 22px;
  margin-left: 12px;
  background: linear-gradient(135deg, #00D4FF, #00B4E0);
  color: #081120 !important;
  font-weight: 700;
  font-size: 14px;
  border-radius: var(--radius-btn);
  box-shadow: var(--shadow-glow);
  transition: all 0.25s ease;
}
.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow-strong);
  color: #081120 !important;
}
.nav-cta:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s;
}
.nav-toggle:hover { border-color: var(--accent); }
.nav-toggle:focus { outline: 2px solid rgba(0, 212, 255, 0.5); outline-offset: 2px; }

/* ========== Breadcrumb ========== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--text-muted); opacity: 0.5; }
.breadcrumb .current { color: var(--accent); }

/* ========== Article Hero ========== */
.article-hero {
  position: relative;
  padding: 120px 0 56px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.article-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.4), transparent);
}
.article-hero::after {
  content: '';
  position: absolute;
  top: -40%; right: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.08), transparent 70%);
  pointer-events: none;
}
.article-hero .container {
  position: relative;
  z-index: 1;
}
.article-hero h1 {
  font-size: 38px;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
  max-width: 860px;
  margin-bottom: 18px;
  color: var(--text-primary);
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  color: var(--text-secondary);
}
.article-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-meta .meta-item i { color: var(--accent); }
.article-meta .badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  background: var(--accent-dim);
  border: 1px solid rgba(0, 212, 255, 0.25);
  color: var(--accent);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-shadow: 0 0 8px rgba(0, 212, 255, 0.3);
}

/* ========== Article Body ========== */
.article-body {
  padding: 64px 0 80px;
  background: var(--bg-primary);
}
.article-content {
  max-width: 780px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-primary);
}
.article-content p {
  margin-bottom: 1.5em;
}
.article-content h2 {
  font-size: 28px;
  font-weight: 700;
  margin: 2em 0 0.8em;
  padding-left: 16px;
  border-left: 4px solid var(--accent);
  color: var(--text-primary);
}
.article-content h3 {
  font-size: 22px;
  font-weight: 600;
  margin: 1.8em 0 0.6em;
  color: var(--text-primary);
}
.article-content h4 {
  font-size: 18px;
  font-weight: 600;
  margin: 1.4em 0 0.5em;
  color: var(--text-primary);
}
.article-content a {
  color: var(--accent);
  border-bottom: 1px solid rgba(0, 212, 255, 0.3);
  transition: border-color 0.2s;
}
.article-content a:hover { border-color: var(--accent); }
.article-content blockquote {
  border-left: 4px solid var(--accent);
  padding: 16px 24px;
  margin: 1.5em 0;
  background: rgba(0, 212, 255, 0.04);
  border-radius: 0 12px 12px 0;
  color: var(--text-secondary);
  font-style: normal;
}
.article-content blockquote p:last-child { margin-bottom: 0; }
.article-content img {
  border-radius: var(--radius-img);
  box-shadow: var(--shadow-card);
  margin: 1.8em 0;
  max-width: 100%;
  height: auto;
}
.article-content ul,
.article-content ol {
  margin: 0 0 1.5em 1.5em;
  list-style: disc;
}
.article-content ol { list-style: decimal; }
.article-content li {
  margin-bottom: 0.4em;
  color: var(--text-secondary);
}
.article-content code {
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 14px;
  color: var(--accent);
}
.article-content pre {
  background: #0A0E18;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  overflow-x: auto;
  margin-bottom: 1.5em;
}
.article-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.7;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 15px;
}
.article-content table th,
.article-content table td {
  border: 1px solid var(--border);
  padding: 12px 16px;
  text-align: left;
}
.article-content table th {
  background: var(--bg-secondary);
  color: var(--accent);
  font-weight: 600;
}
.article-content table tr:nth-child(even) td {
  background: rgba(255, 255, 255, 0.02);
}

/* ===== Not Found ===== */
.not-found {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  padding: 40px 20px;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
}
.not-found i {
  font-size: 48px;
  color: var(--accent);
  margin-bottom: 20px;
  display: block;
  opacity: 0.7;
}
.not-found h2 {
  font-size: 24px;
  margin-bottom: 12px;
}
.not-found p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  border: none;
  line-height: 1.4;
}
.btn-primary {
  background: linear-gradient(135deg, #00D4FF, #00B0DC);
  color: #081120;
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-strong);
  color: #081120;
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.3);
}
.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid rgba(0, 212, 255, 0.5);
}
.btn-outline:hover {
  background: var(--accent-dim);
  transform: translateY(-2px);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.15);
}
.btn-outline:active {
  transform: translateY(0);
}
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ========== Related Articles ========== */
.related-articles {
  padding: 80px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}
.related-articles .section-head {
  text-align: center;
  margin-bottom: 48px;
}
.related-articles .section-head h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
}
.related-articles .section-head p {
  color: var(--text-secondary);
  font-size: 15px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: var(--shadow-card);
}
.related-card .card-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-primary);
}
.related-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.related-card:hover .card-img img { transform: scale(1.03); }
.related-card .card-body {
  padding: 22px;
}
.related-card .card-body h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.related-card .card-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}
.related-card .card-link i { font-size: 12px; transition: transform 0.2s; }
.related-card .card-link:hover i { transform: translateX(4px); }

/* ========== Back Entry ========== */
.back-entry {
  padding: 56px 0;
  text-align: center;
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
}
.back-entry .btn {
  padding: 14px 36px;
  font-size: 15px;
}

/* ========== CTA / Newsletter ========== */
.newsletter-cta {
  padding: 80px 0;
  background: var(--bg-primary);
}
.newsletter-card {
  max-width: 760px;
  margin: 0 auto;
  background: var(--glass);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 20px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 48px 56px;
  text-align: center;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
}
.newsletter-card h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}
.newsletter-card p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 32px;
}
.newsletter-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
}
.newsletter-form input[type="email"] {
  flex: 1;
  height: 46px;
  padding: 0 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  color: var(--text-primary);
  font-size: 15px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.newsletter-form input[type="email"]::placeholder { color: var(--text-muted); }
.newsletter-form input[type="email"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}
.newsletter-form .btn {
  height: 46px;
  padding: 0 28px;
  white-space: nowrap;
}

/* ========== Footer ========== */
.site-footer {
  background: var(--bg-header);
  border-top: 1px solid rgba(0, 212, 255, 0.15);
  padding-top: 64px;
}
.site-footer::before {
  content: '';
  display: block;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
  margin: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .brand-logo { margin-bottom: 16px; }
.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: all 0.2s;
}
.footer-col ul a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-contact p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-contact p i { color: var(--accent); width: 16px; text-align: center; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-secondary); }
.footer-bottom a:hover { color: var(--accent); }

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .container, .header-inner { padding: 0 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .header-inner { padding: 0 20px; }
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 64px;
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg-header);
    border-bottom: 1px solid var(--border);
    padding: 8px 20px 20px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links li { width: 100%; }
  .nav-links a:not(.nav-cta) {
    display: block;
    padding: 14px 12px;
    border-radius: 8px;
  }
  .nav-links li.active a:not(.nav-cta)::after { display: none; }
  .nav-links li.active a:not(.nav-cta) {
    background: var(--accent-dim);
  }
  .nav-cta {
    margin: 12px 0 0;
    justify-content: center;
  }
  .article-hero { padding: 100px 0 40px; }
  .article-hero h1 { font-size: 30px; }
  .article-content { font-size: 15px; }
  .article-content h2 { font-size: 24px; }
  .article-content h3 { font-size: 20px; }
  .related-grid { grid-template-columns: 1fr; }
  .newsletter-card { padding: 36px 24px; }
  .newsletter-form { flex-direction: column; }
  .newsletter-form .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-brand p { max-width: 100%; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .header-inner { padding: 0 16px; }
  .article-hero h1 { font-size: 26px; }
  .article-meta { gap: 10px; font-size: 13px; }
  .newsletter-card { padding: 28px 18px; }
  .back-entry .btn {
    width: 100%;
    max-width: 320px;
  }
}

/* roulang page: category1 */
:root {
      --bg-primary: #0B1220;
      --bg-secondary: #0F1B2C;
      --bg-elevated: #111E31;
      --accent-cyan: #00D4FF;
      --accent-amber: #FFB800;
      --grad-main: linear-gradient(135deg, #0D2B45, #1B3A5C);
      --grad-cyan: linear-gradient(135deg, #00D4FF, #00A8CC);
      --text-primary: #E6EDF3;
      --text-secondary: #9FB0C3;
      --text-muted: #6B7D91;
      --border-color: rgba(255, 255, 255, 0.08);
      --glass-bg: rgba(255, 255, 255, 0.04);
      --glass-bg-strong: rgba(255, 255, 255, 0.06);
      --radius-card: 16px;
      --radius-img: 12px;
      --radius-btn: 10px;
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
      --shadow-cyan: 0 0 24px rgba(0, 212, 255, 0.35);
      --max-width: 1200px;
      --header-height: 64px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", sans-serif;
      background: var(--bg-primary);
      color: var(--text-primary);
      line-height: 1.75;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

    a {
      color: var(--accent-cyan);
      text-decoration: none;
      transition: color .25s;
    }

    a:hover {
      color: #00E6FF;
    }

    button {
      cursor: pointer;
      font-family: inherit;
    }

    input {
      font-family: inherit;
    }

    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 40px;
    }

    @media (max-width: 1024px) {
      .container {
        padding: 0 24px;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding: 0 20px;
      }
    }

    /* ===== Header / Nav ===== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: var(--header-height);
      background: #081120;
      z-index: 1000;
      border-bottom: 1px solid var(--border-color);
    }

    .site-header::after {
      content: '';
      position: absolute;
      bottom: -1px;
      left: 0;
      right: 0;
      height: 1px;
      background: linear-gradient(90deg, var(--accent-cyan), transparent 60%);
      pointer-events: none;
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 100%;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--text-primary);
      letter-spacing: .02em;
    }

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

    .logo-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      border-radius: 10px;
      background: var(--grad-cyan);
      color: #0B1220;
      font-size: 14px;
    }

    .nav-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      color: var(--text-primary);
      width: 40px;
      height: 40px;
      border-radius: 8px;
      font-size: 18px;
      align-items: center;
      justify-content: center;
      transition: border-color .25s;
    }

    .nav-toggle:hover {
      border-color: var(--accent-cyan);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 6px;
      list-style: none;
    }

    .nav-links li a {
      display: inline-block;
      padding: 8px 16px;
      border-radius: 8px;
      color: var(--text-secondary);
      font-size: 15px;
      font-weight: 500;
      transition: all .25s;
    }

    .nav-links li a:hover {
      background: rgba(0, 212, 255, 0.06);
      color: var(--text-primary);
    }

    .nav-links li.active a {
      color: var(--accent-cyan);
      text-shadow: 0 0 12px rgba(0, 212, 255, 0.4);
      position: relative;
    }

    .nav-links li.active a::after {
      content: '';
      position: absolute;
      left: 16px;
      right: 16px;
      bottom: 4px;
      height: 2px;
      border-radius: 2px;
      background: var(--accent-cyan);
      box-shadow: 0 0 8px rgba(0, 212, 255, 0.6);
    }

    .nav-cta {
      background: var(--grad-cyan);
      color: #0B1220 !important;
      font-weight: 700;
      border-radius: 10px !important;
      padding: 8px 20px !important;
      box-shadow: var(--shadow-cyan);
      transition: all .25s !important;
    }

    .nav-cta:hover {
      box-shadow: 0 0 36px rgba(0, 212, 255, 0.45);
      transform: translateY(-1px);
      color: #0B1220 !important;
    }

    @media (max-width: 768px) {
      .nav-toggle {
        display: inline-flex;
      }

      .site-header nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: #081120;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        display: none;
        padding: 12px 0 20px;
        max-height: calc(100vh - var(--header-height));
        overflow-y: auto;
      }

      .site-header nav.open {
        display: block;
      }

      .nav-links {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
        gap: 2px;
      }

      .nav-links li a {
        display: block;
        padding: 14px 24px;
        border-radius: 0;
      }

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

      .nav-links li.active a {
        background: rgba(0, 212, 255, 0.08);
      }

      .nav-cta {
        margin: 12px auto 0;
        display: inline-block;
        width: calc(100% - 48px);
        text-align: center;
        padding: 12px 20px !important;
      }
    }

    /* ===== Hero ===== */
    .page-hero {
      padding: 160px 0 80px;
      position: relative;
      background:
        linear-gradient(135deg, rgba(0, 212, 255, 0.08), transparent 40%),
        var(--bg-primary);
      overflow: hidden;
    }

    .page-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
      background-size: 32px 32px;
      pointer-events: none;
    }

    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 780px;
    }

    .page-hero h1 {
      font-size: 44px;
      font-weight: 700;
      letter-spacing: -0.02em;
      margin-bottom: 20px;
      line-height: 1.25;
    }

    .hero-sub {
      font-size: 18px;
      color: var(--text-secondary);
      margin-bottom: 36px;
      max-width: 640px;
      line-height: 1.8;
    }

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

    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--grad-cyan);
      color: #0B1220;
      font-weight: 700;
      font-size: 15px;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      border: none;
      box-shadow: var(--shadow-cyan);
      transition: all .25s;
      line-height: 1.5;
    }

    .btn-primary:hover {
      box-shadow: 0 0 36px rgba(0, 212, 255, 0.45);
      transform: translateY(-2px);
      color: #0B1220;
    }

    .btn-primary:active {
      transform: translateY(0);
      box-shadow: 0 0 16px rgba(0, 212, 255, 0.3);
    }

    .btn-primary:focus-visible {
      outline: 2px solid #fff;
      outline-offset: 3px;
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: transparent;
      color: var(--accent-cyan);
      font-weight: 600;
      font-size: 15px;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      border: 1px solid var(--accent-cyan);
      transition: all .25s;
      line-height: 1.5;
    }

    .btn-outline:hover {
      background: rgba(0, 212, 255, 0.08);
      color: #00E6FF;
      transform: translateY(-2px);
    }

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

    .btn-outline:focus-visible {
      outline: 2px solid #fff;
      outline-offset: 3px;
    }

    @media (max-width: 768px) {
      .page-hero {
        padding: 130px 0 56px;
      }

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

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

      .hero-actions .btn-primary,
      .hero-actions .btn-outline {
        flex: 1;
        justify-content: center;
        padding: 12px 16px;
      }
    }

    @media (max-width: 520px) {
      .hero-actions {
        flex-direction: column;
      }

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

    /* ===== Section base ===== */
    .section {
      padding: 80px 0;
    }

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

    .section-label {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 600;
      color: var(--accent-cyan);
      text-transform: uppercase;
      letter-spacing: 0.08em;
      margin-bottom: 14px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 700;
      letter-spacing: -0.02em;
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .section-desc {
      color: var(--text-secondary);
      font-size: 16px;
      max-width: 640px;
      margin-bottom: 40px;
      line-height: 1.8;
    }

    @media (max-width: 768px) {
      .section {
        padding: 56px 0;
      }

      .section-title {
        font-size: 26px;
      }
    }

    /* ===== Intro glass card ===== */
    .glass-card {
      background: var(--glass-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-card);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      padding: 40px;
      position: relative;
      overflow: hidden;
    }

    .glass-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 1px;
      background: linear-gradient(90deg, rgba(0, 212, 255, 0.4), transparent);
      pointer-events: none;
    }

    .intro-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 44px;
      align-items: center;
    }

    .intro-text .section-title {
      margin-bottom: 12px;
    }

    .intro-text .section-desc {
      margin-bottom: 24px;
    }

    .intro-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      background: rgba(0, 212, 255, 0.08);
      border: 1px solid rgba(0, 212, 255, 0.2);
      color: var(--accent-cyan);
      border-radius: 100px;
      font-size: 13px;
      font-weight: 500;
    }

    .intro-visual {
      border-radius: var(--radius-card);
      overflow: hidden;
      height: 280px;
      position: relative;
    }

    .intro-visual img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .intro-stat {
      position: absolute;
      bottom: 16px;
      left: 16px;
      right: 16px;
      background: rgba(11, 18, 32, 0.85);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 12px 16px;
      display: flex;
      gap: 28px;
    }

    .stat-item .stat-num {
      font-size: 20px;
      font-weight: 700;
      color: var(--accent-amber);
      line-height: 1.3;
    }

    .stat-item .stat-label {
      font-size: 12px;
      color: var(--text-muted);
      letter-spacing: 0.03em;
    }

    @media (max-width: 1024px) {
      .intro-grid {
        grid-template-columns: 1fr;
      }

      .intro-visual {
        height: 240px;
      }
    }

    @media (max-width: 768px) {
      .glass-card {
        padding: 28px 22px;
      }

      .intro-stat {
        gap: 16px;
      }
    }

    /* ===== Guide cards ===== */
    .guide-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 24px;
    }

    .guide-card {
      grid-column: span 3;
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-card);
      overflow: hidden;
      transition: all .3s;
      display: flex;
      flex-direction: column;
    }

    .guide-card:first-child {
      grid-column: span 6;
      flex-direction: row;
    }

    .guide-card:first-child .card-img {
      width: 46%;
      min-height: 260px;
      flex-shrink: 0;
    }

    .guide-card:first-child .card-body {
      flex: 1;
      padding: 40px;
    }

    .guide-card .card-img {
      height: 200px;
      overflow: hidden;
      position: relative;
    }

    .guide-card .card-img::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 60%, rgba(11, 18, 32, 0.5));
      pointer-events: none;
    }

    .guide-card .card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s;
    }

    .guide-card:hover {
      border-color: rgba(0, 212, 255, 0.3);
      transform: translateY(-4px);
      box-shadow: var(--shadow-card);
    }

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

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

    .card-tag {
      align-self: flex-start;
      font-size: 12px;
      color: var(--accent-cyan);
      background: rgba(0, 212, 255, 0.1);
      border: 1px solid rgba(0, 212, 255, 0.2);
      padding: 3px 10px;
      border-radius: 100px;
      margin-bottom: 12px;
      letter-spacing: 0.05em;
      font-weight: 500;
    }

    .card-body h3 {
      font-size: 20px;
      font-weight: 600;
      margin-bottom: 10px;
      color: var(--text-primary);
      line-height: 1.4;
    }

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

    .card-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--accent-cyan);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: gap .25s, color .25s;
    }

    .card-link:hover {
      gap: 10px;
      color: #00E6FF;
    }

    @media (max-width: 1024px) {
      .guide-card:first-child {
        flex-direction: column;
      }

      .guide-card:first-child .card-img {
        width: 100%;
        min-height: 220px;
      }

      .guide-card {
        grid-column: span 6;
      }
    }

    @media (max-width: 768px) {
      .guide-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }

      .guide-card,
      .guide-card:first-child {
        grid-column: auto;
      }

      .guide-card:first-child .card-body {
        padding: 24px;
      }
    }

    /* ===== Scene cards ===== */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .scene-card {
      background: var(--glass-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-card);
      padding: 30px 24px;
      text-align: center;
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      transition: all .3s;
    }

    .scene-card:hover {
      border-color: rgba(0, 212, 255, 0.3);
      transform: translateY(-3px);
      background: var(--glass-bg-strong);
    }

    .scene-icon {
      width: 56px;
      height: 56px;
      margin: 0 auto 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 16px;
      background: rgba(0, 212, 255, 0.08);
      border: 1px solid rgba(0, 212, 255, 0.2);
      color: var(--accent-cyan);
      font-size: 22px;
    }

    .scene-card h3 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-primary);
    }

    .scene-card p {
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.65;
    }

    @media (max-width: 1024px) {
      .scene-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 520px) {
      .scene-grid {
        grid-template-columns: 1fr;
      }
    }

    /* ===== FAQ ===== */
    .faq-panel {
      max-width: 820px;
      margin: 0 auto;
    }

    .faq-item {
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      transition: box-shadow .3s;
    }

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

    .faq-item.active {
      box-shadow: inset 3px 0 0 var(--accent-cyan);
    }

    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 20px;
      padding: 22px 4px 22px 16px;
      background: none;
      border: none;
      width: 100%;
      text-align: left;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-primary);
      transition: color .25s;
      line-height: 1.5;
    }

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

    .faq-question:focus-visible {
      outline: 2px solid var(--accent-cyan);
      outline-offset: -2px;
      border-radius: 8px;
    }

    .faq-icon {
      flex-shrink: 0;
      width: 28px;
      height: 28px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 8px;
      border: 1px solid var(--border-color);
      color: var(--accent-cyan);
      font-size: 13px;
      transition: all .3s;
    }

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

    .faq-item.active .faq-icon {
      background: rgba(0, 212, 255, 0.1);
      border-color: rgba(0, 212, 255, 0.3);
      transform: rotate(180deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height .35s ease;
      padding: 0 4px 0 16px;
    }

    .faq-answer-inner {
      padding: 0 0 24px;
      color: var(--text-secondary);
      font-size: 15px;
      line-height: 1.75;
    }

    .faq-item.active .faq-answer {
      max-height: 500px;
    }

    @media (max-width: 520px) {
      .faq-question {
        font-size: 15px;
        padding-left: 10px;
      }

      .faq-answer {
        padding-left: 10px;
      }
    }

    /* ===== CTA ===== */
    .cta-section {
      padding: 80px 0;
    }

    .cta-card {
      background: var(--glass-bg);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid rgba(0, 212, 255, 0.25);
      border-radius: var(--radius-card);
      padding: 60px 40px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .cta-card::before {
      content: '';
      position: absolute;
      top: -60%;
      left: 50%;
      transform: translateX(-50%);
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(0, 212, 255, 0.15), transparent 70%);
      pointer-events: none;
    }

    .cta-card h2 {
      font-size: 30px;
      font-weight: 700;
      margin-bottom: 14px;
      line-height: 1.3;
      position: relative;
    }

    .cta-card p {
      color: var(--text-secondary);
      max-width: 560px;
      margin: 0 auto 32px;
      font-size: 16px;
      line-height: 1.75;
      position: relative;
    }

    .cta-actions {
      display: flex;
      gap: 16px;
      justify-content: center;
      flex-wrap: wrap;
      position: relative;
    }

    @media (max-width: 768px) {
      .cta-section {
        padding: 56px 0;
      }

      .cta-card {
        padding: 40px 24px;
      }

      .cta-card h2 {
        font-size: 26px;
      }
    }

    @media (max-width: 520px) {
      .cta-actions {
        flex-direction: column;
      }

      .cta-actions .btn-primary,
      .cta-actions .btn-outline {
        width: 100%;
        justify-content: center;
      }
    }

    /* ===== Footer ===== */
    .site-footer {
      background: #081120;
      position: relative;
    }

    .site-footer::before {
      content: '';
      display: block;
      height: 1px;
      background: linear-gradient(90deg, var(--accent-cyan), transparent 60%);
    }

    .site-footer .container {
      padding-top: 56px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 44px;
      padding-bottom: 40px;
    }

    .footer-brand p {
      color: var(--text-muted);
      font-size: 14px;
      margin-top: 16px;
      line-height: 1.75;
    }

    .footer-col h4 {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 16px;
      letter-spacing: 0.04em;
    }

    .footer-col ul {
      list-style: none;
    }

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

    .footer-col ul li a {
      color: var(--text-secondary);
      font-size: 14px;
      transition: color .25s, padding-left .25s;
      display: inline-block;
    }

    .footer-col ul li a:hover {
      color: var(--accent-cyan);
      padding-left: 4px;
    }

    .footer-contact p {
      color: var(--text-secondary);
      font-size: 14px;
      margin-bottom: 10px;
      line-height: 1.65;
    }

    .footer-contact i {
      color: var(--accent-cyan);
      margin-right: 6px;
      width: 16px;
      text-align: center;
    }

    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding: 20px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--text-muted);
      font-size: 13px;
      flex-wrap: wrap;
      gap: 10px;
    }

    .footer-bottom a {
      color: var(--text-muted);
      transition: color .25s;
    }

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

    @media (max-width: 1024px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 640px) {
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }

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

/* roulang page: category2 */
:root {
  --bg-primary: #0B1220;
  --bg-secondary: #0F1B2C;
  --bg-header: #081120;
  --grad-primary: linear-gradient(135deg, #0D2B45, #1B3A5C);
  --color-main: #00D4FF;
  --color-accent: #FFB800;
  --text-main: #E6EDF3;
  --text-sub: #9FB0C3;
  --text-mut: #6B7D91;
  --border-color: rgba(255,255,255,0.08);
  --glass-bg: rgba(255,255,255,0.05);
  --glass-border: rgba(255,255,255,0.1);
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-img: 12px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-btn: 0 0 24px rgba(0,212,255,0.35);
  --transition: all .3s ease;
  --font-main: -apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Helvetica Neue",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:1.75;
  background:var(--bg-primary);
  color:var(--text-main);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-img)}
a{color:var(--color-main);text-decoration:none;transition:var(--transition)}
a:hover{color:#67E4FF}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--color-main);
  outline-offset:2px;
}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 40px}
.grid-container{max-width:1200px;padding-left:40px;padding-right:40px}
.section{padding:90px 0}
.section-alt{background:var(--bg-secondary)}
.section-kicker{
  display:inline-block;
  font-size:13px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--color-main);
  border:1px solid rgba(0,212,255,.3);
  background:rgba(0,212,255,.06);
  padding:4px 14px;
  border-radius:20px;
  margin-bottom:14px;
}
.section-title{
  font-size:30px;
  font-weight:700;
  letter-spacing:-.02em;
  margin-bottom:16px;
  line-height:1.3;
}
.section-desc{color:var(--text-sub);font-size:16px;max-width:720px;margin-bottom:40px}
.glass-card{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
}

/* ===== Header / Nav ===== */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  background:var(--bg-header);
  height:64px;
  border-bottom:1px solid transparent;
}
.site-header::after{
  content:'';
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,var(--color-main),rgba(0,212,255,.25),transparent);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:64px;
  gap:20px;
}
.brand-logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:20px;
  font-weight:700;
  color:var(--text-main);
  letter-spacing:-.01em;
  flex-shrink:0;
}
.brand-logo:hover{color:var(--text-main)}
.logo-icon{
  width:34px;height:34px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  background:var(--color-main);
  color:#081120;
  font-size:16px;
  box-shadow:0 0 18px rgba(0,212,255,.45);
}
.nav-toggle{
  display:none;
  background:none;
  border:none;
  cursor:pointer;
  width:42px;height:42px;
  border-radius:8px;
  align-items:center;
  justify-content:center;
  gap:5px;
  flex-direction:column;
  z-index:1101;
}
.nav-toggle .hamburger-line{
  display:block;
  width:20px;height:2px;
  background:var(--text-main);
  border-radius:2px;
  transition:var(--transition);
}
.nav-toggle.active .hamburger-line:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active .hamburger-line:nth-child(2){opacity:0}
.nav-toggle.active .hamburger-line:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-links{
  display:flex;
  align-items:center;
  gap:32px;
  margin:0;
}
.nav-links li{position:relative}
.nav-links li a{
  display:inline-block;
  font-size:15px;
  color:var(--text-sub);
  padding:6px 2px;
  position:relative;
  transition:var(--transition);
}
.nav-links li a:hover{
  color:var(--text-main);
  background:rgba(0,212,255,.06);
}
.nav-links li.active a{
  color:var(--color-main);
  text-shadow:0 0 12px rgba(0,212,255,.4);
}
.nav-links li.active a::after{
  content:'';
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--color-main);
  box-shadow:0 0 12px rgba(0,212,255,.6);
  border-radius:2px;
}
.nav-links .nav-cta{
  background:var(--color-main);
  color:#081120;
  font-weight:600;
  padding:8px 22px;
  border-radius:var(--radius-btn);
  box-shadow:var(--shadow-btn);
  transition:var(--transition);
  border:none;
}
.nav-links .nav-cta:hover{
  background:#4DE2FF;
  color:#081120;
  box-shadow:0 0 36px rgba(0,212,255,.5);
  transform:translateY(-1px);
}

/* ===== Hero ===== */
.hero{
  position:relative;
  min-height:78vh;
  display:flex;
  align-items:center;
  padding:150px 0 90px;
  background:
    linear-gradient(180deg,rgba(11,18,32,.94) 0%,rgba(15,27,44,.88) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow:hidden;
}
.hero::before{
  content:'';
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:44px 44px;
  pointer-events:none;
}
.hero::after{
  content:'';
  position:absolute;
  top:-150px;right:-100px;
  width:480px;height:480px;
  background:radial-gradient(circle,rgba(0,212,255,.18),transparent 65%);
  pointer-events:none;
  border-radius:50%;
}
.hero .grid-container{position:relative;z-index:2;width:100%}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--color-main);
  border:1px solid rgba(0,212,255,.35);
  background:rgba(0,212,255,.08);
  padding:5px 16px;
  border-radius:24px;
  margin-bottom:22px;
}
.hero-badge i{font-size:12px}
.hero h1{
  font-size:42px;
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.02em;
  margin-bottom:20px;
}
.hero-sub{
  font-size:18px;
  color:var(--text-sub);
  max-width:560px;
  line-height:1.75;
  margin-bottom:34px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:40px}
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  padding:12px 28px;
  border-radius:var(--radius-btn);
  transition:var(--transition);
  cursor:pointer;
  border:none;
  line-height:1.4;
}
.btn i{font-size:14px}
.btn-primary{
  background:var(--color-main);
  color:#081120;
  box-shadow:var(--shadow-btn);
}
.btn-primary:hover{
  background:#4DE2FF;
  color:#081120;
  transform:translateY(-2px);
  box-shadow:0 0 36px rgba(0,212,255,.5);
}
.btn-outline{
  background:transparent;
  color:var(--color-main);
  border:1px solid var(--color-main);
}
.btn-outline:hover{
  background:rgba(0,212,255,.08);
  color:#67E4FF;
  transform:translateY(-2px);
  box-shadow:0 0 20px rgba(0,212,255,.25);
}
.hero-card{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-radius:var(--radius-card);
  padding:30px 32px;
  box-shadow:var(--shadow-card);
  max-width:420px;
  margin:0 auto;
  position:relative;
}
.hero-card::before{
  content:'';
  position:absolute;
  top:0;left:24px;right:24px;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--color-main),transparent);
}
.hero-card h3{
  font-size:16px;
  font-weight:600;
  color:var(--color-main);
  letter-spacing:.05em;
  margin-bottom:20px;
  display:flex;
  align-items:center;
  gap:8px;
}
.hero-card h3 i{font-size:14px}
.hero-card ul li{
  display:flex;
  align-items:center;
  gap:12px;
  padding:9px 0;
  border-bottom:1px solid rgba(255,255,255,.06);
  font-size:14px;
  color:var(--text-main);
}
.hero-card ul li:last-child{border-bottom:none}
.hero-card ul li span{
  color:var(--text-mut);
  min-width:82px;
  font-size:13px;
}
.hero-card ul li strong{font-weight:600;font-size:14px}

/* ===== 板块通用 ===== */
.intro-section{padding:90px 0}
.intro-card{padding:50px;overflow:hidden}
.intro-card .content-wrap{padding:20px 0}
.intro-card h2{font-size:28px;font-weight:700;letter-spacing:-.02em;margin-bottom:16px}
.intro-card p{
  color:var(--text-sub);
  font-size:16px;
  line-height:1.85;
  margin-bottom:16px;
}
.intro-card p:last-child{margin-bottom:0}
.intro-card .img-wrap{
  border-radius:var(--radius-img);
  overflow:hidden;
  position:relative;
  box-shadow:var(--shadow-card);
}
.intro-card .img-wrap::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 60%,rgba(11,18,32,.6));
  border-radius:var(--radius-img);
}
.intro-card .img-wrap img{width:100%;height:340px;object-fit:cover}

/* ===== Timeline ===== */
.timeline-section{padding:90px 0;background:var(--bg-secondary)}
.timeline-list{
  position:relative;
  padding-left:44px;
  max-width:820px;
}
.timeline-list::before{
  content:'';
  position:absolute;
  left:12px;top:6px;bottom:6px;
  width:2px;
  background:linear-gradient(180deg,var(--color-main),rgba(0,212,255,.1));
  border-radius:2px;
}
.timeline-item{
  position:relative;
  margin-bottom:34px;
  padding-left:0;
}
.timeline-item:last-child{margin-bottom:0}
.timeline-item::before{
  content:'';
  position:absolute;
  left:-38px;
  top:26px;
  width:14px;height:14px;
  border-radius:50%;
  background:var(--color-main);
  box-shadow:0 0 18px rgba(0,212,255,.65),0 0 4px rgba(0,212,255,.9);
  z-index:2;
}
.timeline-year{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--color-accent);
  background:rgba(255,184,0,.08);
  border:1px solid rgba(255,184,0,.25);
  padding:2px 14px;
  border-radius:16px;
  margin-bottom:10px;
}
.timeline-card{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-radius:var(--radius-card);
  padding:24px 28px;
  transition:var(--transition);
  box-shadow:var(--shadow-card);
}
.timeline-card:hover{
  border-color:rgba(0,212,255,.35);
  transform:translateY(-3px);
}
.timeline-card h3{font-size:19px;font-weight:600;margin-bottom:8px;color:var(--text-main)}
.timeline-card p{font-size:15px;color:var(--text-sub);line-height:1.75;margin-bottom:0}

/* ===== 理念区 ===== */
.values-section{padding:90px 0}
.values-grid{margin-top:10px}
.value-card{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-radius:var(--radius-card);
  padding:28px 30px;
  transition:var(--transition);
  box-shadow:var(--shadow-card);
  height:100%;
  position:relative;
  overflow:hidden;
}
.value-card::before{
  content:'';
  position:absolute;
  top:0;left:0;
  width:3px;height:0;
  background:var(--color-main);
  box-shadow:0 0 14px rgba(0,212,255,.6);
  transition:var(--transition);
}
.value-card:hover::before{height:100%}
.value-card:hover{
  border-color:rgba(0,212,255,.3);
  transform:translateY(-4px);
}
.value-card .value-icon{
  width:46px;height:46px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  background:rgba(0,212,255,.1);
  border:1px solid rgba(0,212,255,.25);
  color:var(--color-main);
  font-size:19px;
  margin-bottom:18px;
}
.value-card h3{font-size:19px;font-weight:600;margin-bottom:10px;color:var(--text-main)}
.value-card p{font-size:14px;color:var(--text-sub);line-height:1.75;margin-bottom:0}
.value-card-lg{padding:34px 36px}
.value-card-lg .value-icon{width:56px;height:56px;font-size:23px}
.value-card-lg h3{font-size:22px}
.value-card-lg p{font-size:15px}

/* ===== 精选内容卡 ===== */
.featured-section{padding:90px 0;background:var(--bg-secondary)}
.content-card{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:var(--transition);
  display:flex;
  flex-direction:column;
  height:100%;
  position:relative;
}
.content-card:hover{
  border-color:rgba(0,212,255,.3);
  transform:translateY(-4px);
  box-shadow:0 14px 40px rgba(0,0,0,.45);
}
.content-card .card-img{
  position:relative;
  overflow:hidden;
  border-radius:0;
}
.content-card .card-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.content-card:hover .card-img img{transform:scale(1.05)}
.content-card .card-body{padding:24px 26px;display:flex;flex-direction:column;flex:1}
.card-tag{
  display:inline-block;
  font-size:12px;
  letter-spacing:.04em;
  color:var(--color-main);
  background:rgba(0,212,255,.08);
  border:1px solid rgba(0,212,255,.25);
  border-radius:14px;
  padding:2px 12px;
  margin-bottom:14px;
  align-self:flex-start;
}
.content-card h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:10px;color:var(--text-main)}
.content-card p{font-size:14px;color:var(--text-sub);line-height:1.7;margin-bottom:18px;flex:1}
.card-link{
  font-size:14px;
  font-weight:600;
  color:var(--color-main);
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:var(--transition);
}
.card-link:hover{gap:12px;color:#67E4FF}
.card-link i{font-size:12px}
.content-card-wide .card-img{height:220px}
.content-card-small .card-img{height:150px}
.content-card-small h3{font-size:16px}
.side-stack{display:flex;flex-direction:column;gap:24px;height:100%}

/* ===== FAQ ===== */
.faq-section{padding:90px 0}
.faq-list{max-width:840px;margin:0 auto}
.faq-item{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  margin-bottom:16px;
  overflow:hidden;
  transition:var(--transition);
  position:relative;
}
.faq-item.active{
  border-color:rgba(0,212,255,.3);
  box-shadow:0 0 20px rgba(0,212,255,.08);
}
.faq-item::before{
  content:'';
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--color-main);
  box-shadow:0 0 12px rgba(0,212,255,.5);
  opacity:0;
  transition:var(--transition);
}
.faq-item.active::before{opacity:1}
.faq-question{
  width:100%;
  background:none;
  border:none;
  text-align:left;
  padding:22px 28px;
  font-size:16px;
  font-weight:600;
  color:var(--text-main);
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  transition:var(--transition);
  font-family:var(--font-main);
}
.faq-question:hover{color:var(--color-main)}
.faq-question .faq-icon{
  width:28px;height:28px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.2);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  flex-shrink:0;
  transition:var(--transition);
  color:var(--text-sub);
}
.faq-item.active .faq-question .faq-icon{
  transform:rotate(45deg);
  border-color:var(--color-main);
  color:var(--color-main);
  box-shadow:0 0 12px rgba(0,212,255,.3);
}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .4s ease;
}
.faq-item.active .faq-answer{max-height:400px}
.faq-answer-inner{
  padding:0 28px 22px;
  color:var(--text-sub);
  font-size:15px;
  line-height:1.75;
}
.faq-answer-inner p{margin-bottom:8px}
.faq-answer-inner p:last-child{margin-bottom:0}

/* ===== CTA ===== */
.cta-section{padding:90px 0;background:var(--bg-secondary);position:relative;overflow:hidden}
.cta-section::before{
  content:'';
  position:absolute;
  bottom:-120px;left:-80px;
  width:380px;height:380px;
  background:radial-gradient(circle,rgba(0,212,255,.1),transparent 65%);
  border-radius:50%;
  pointer-events:none;
}
.cta-card{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(0,212,255,.25);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-radius:24px;
  padding:64px 48px;
  text-align:center;
  position:relative;
  z-index:1;
  max-width:880px;
  margin:0 auto;
  box-shadow:0 0 50px rgba(0,212,255,.08);
}
.cta-card h2{font-size:28px;font-weight:700;letter-spacing:-.02em;margin-bottom:14px}
.cta-card p{color:var(--text-sub);font-size:16px;margin-bottom:32px;max-width:600px;margin-left:auto;margin-right:auto}
.cta-form{
  display:flex;
  gap:14px;
  max-width:520px;
  margin:0 auto;
}
.cta-form input[type=email]{
  flex:1;
  height:48px;
  background:#0B1220;
  border:1px solid rgba(255,255,255,.15);
  border-radius:var(--radius-btn);
  padding:0 18px;
  font-size:15px;
  color:var(--text-main);
  font-family:var(--font-main);
  transition:var(--transition);
}
.cta-form input[type=email]::placeholder{color:var(--text-mut)}
.cta-form input[type=email]:focus{
  border-color:var(--color-main);
  box-shadow:0 0 0 3px rgba(0,212,255,.12);
  outline:none;
}
.cta-form .btn{height:48px;white-space:nowrap}

/* ===== Footer ===== */
.site-footer{
  background:#081120;
  padding-top:64px;
  position:relative;
}
.site-footer::before{
  content:'';
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--color-main),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr .8fr .9fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{max-width:320px}
.footer-brand .brand-logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-sub);line-height:1.8;margin-top:14px}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:var(--text-main);
  margin-bottom:18px;
  letter-spacing:.03em;
}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:var(--text-sub);transition:var(--transition)}
.footer-col ul li a:hover{color:var(--color-main);padding-left:4px}
.footer-contact p{font-size:14px;color:var(--text-sub);margin-bottom:10px;display:flex;align-items:center;gap:10px}
.footer-contact i{color:var(--color-main);width:16px;font-size:13px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  font-size:13px;
  color:var(--text-mut);
}
.footer-bottom a{color:var(--text-mut)}
.footer-bottom a:hover{color:var(--color-main)}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .intro-card{padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .value-card-lg{padding:28px 30px}
}
@media (max-width:768px){
  .container,.grid-container{padding-left:24px;padding-right:24px}
  .hero{padding:130px 0 64px}
  .hero h1{font-size:34px}
  .hero-sub{font-size:16px}
  .section{padding:64px 0}
  .timeline-section,.featured-section,.cta-section{padding:64px 0}
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:fixed;
    top:0;left:0;right:0;
    background:rgba(8,17,32,.98);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    flex-direction:column;
    align-items:flex-start;
    padding:90px 32px 32px;
    gap:20px;
    transform:translateY(-100%);
    transition:transform .4s ease;
    z-index:1100;
    height:auto;
    min-height:100vh;
    margin:0;
  }
  .nav-links.open{transform:translateY(0)}
  .nav-links li{width:100%}
  .nav-links li a{display:block;font-size:18px;padding:8px 0}
  .nav-links li.active a::after{width:60px}
  .nav-links .nav-cta{display:inline-block;margin-top:8px}
  .brand-logo{font-size:18px}
  .cta-card{padding:40px 24px}
  .cta-form{flex-direction:column}
  .cta-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;text-align:center}
  .intro-card{padding:28px 22px}
  .intro-card .img-wrap img{height:240px}
  .hero-card{margin-top:32px}
}
@media (max-width:640px){
  .container,.grid-container{padding-left:20px;padding-right:20px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:16px;line-height:1.7}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{justify-content:center}
  .section-title{font-size:26px}
  .timeline-list{padding-left:36px}
  .timeline-item::before{left:-32px;width:12px;height:12px}
  .timeline-year{font-size:12px}
  .timeline-card{padding:20px}
  .value-card-lg{padding:24px}
  .content-card-wide .card-img{height:180px}
  .content-card-small .card-img{height:160px}
  .section-kicker{font-size:12px}
}