/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --bg-root: #070B14;
  --bg-panel: #0D1526;
  --bg-deep: #060912;
  --glass-bg: rgba(15, 23, 42, 0.66);
  --glass-bg-light: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(148, 184, 255, 0.16);
  --glass-border-hover: rgba(0, 212, 255, 0.35);
  --primary: #2E6BFF;
  --accent: #00D4FF;
  --success: #10D9A3;
  --warning: #F5A524;
  --text-main: #EAF2FF;
  --text-secondary: #9FB3D9;
  --text-muted: #5C7299;
  --border-light: rgba(255, 255, 255, 0.1);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 12px 28px rgba(0, 0, 0, 0.4);
  --shadow-glass: 0 16px 40px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.12);
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.28);
  --shadow-glow-hover: 0 0 40px rgba(0, 212, 255, 0.45);
  --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "DIN Alternate", "Rajdhani", "PingFang SC", sans-serif;
  --container-max: 1200px;
  --space-section: 90px;
  --header-h: 72px;
}
/* ===== Reset / Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-cn);
  background: var(--bg-root);
  background-image: radial-gradient(at 85% 10%, rgba(0, 212, 255, 0.05) 0, transparent 55%), radial-gradient(at 10% 90%, rgba(46, 107, 255, 0.06) 0, transparent 45%), linear-gradient(145deg, #070B14 0%, #0A1120 100%);
  background-attachment: fixed;
  color: var(--text-main);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.25s, border-color 0.25s, box-shadow 0.25s, transform 0.25s; }
button { cursor: pointer; border: none; background: none; font-family: inherit; color: inherit; }
input, textarea { font-family: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5 { line-height: 1.3; font-weight: 700; }
/* ===== 容器 ===== */
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) { .container { padding: 0 16px; } }
/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  height: 48px; padding: 0 32px; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #2E6BFF 0%, #00D4FF 100%);
  color: #fff; font-size: 15px; font-weight: 600; letter-spacing: 0.02em;
  box-shadow: var(--shadow-glow); transition: all 0.3s ease;
  border: none; line-height: 1;
}
.btn-primary:hover { box-shadow: var(--shadow-glow-hover); transform: translateY(-1px); filter: brightness(1.05); }
.btn-primary:active { transform: scale(0.98); }
.btn-primary:focus-visible { outline: 3px solid rgba(0, 212, 255, 0.5); outline-offset: 2px; }
.btn-ghost {
  display: inline-flex; align-items: center; justify-content: center;
  height: 48px; padding: 0 32px; border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06); color: var(--accent);
  border: 1px solid rgba(255, 255, 255, 0.2); font-size: 15px; font-weight: 500;
  transition: all 0.3s ease;
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.1); border-color: var(--glass-border-hover); }
.btn-ghost:focus-visible { outline: 3px solid rgba(0, 212, 255, 0.4); outline-offset: 2px; }
.btn-lg { height: 52px; padding: 0 40px; font-size: 16px; border-radius: 12px; }
.btn-sm { height: 32px; padding: 0 18px; font-size: 13px; border-radius: 9px; }
/* ===== 顶部导航 ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(7, 11, 20, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(148, 184, 255, 0.1);
}
.header-inner { display: flex; align-items: center; height: var(--header-h); gap: 20px; }
.logo { flex-shrink: 0; display: flex; align-items: center; }
.logo a { display: flex; align-items: center; gap: 10px; }
.logo-icon {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, #2E6BFF, #00D4FF);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 18px; font-weight: 700;
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.3);
}
.logo-text { font-size: 20px; font-weight: 700; letter-spacing: 0.02em; color: var(--text-main); white-space: nowrap; }
.logo-text:hover { color: var(--accent); }
.search-box {
  flex: 1; max-width: 560px; margin: 0 auto;
  display: flex; align-items: center; gap: 0;
  height: 42px; border-radius: 12px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
  transition: border-color 0.3s, box-shadow 0.3s;
}
.search-box:focus-within { border-color: rgba(0, 212, 255, 0.6); box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15); }
.search-box svg { flex-shrink: 0; margin-left: 14px; opacity: 0.7; }
.search-input {
  flex: 1; height: 100%; border: none; background: transparent;
  padding: 0 12px; color: var(--text-main); font-size: 14px;
  outline: none;
}
.search-input::placeholder { color: var(--text-muted); }
.search-btn {
  height: 100%; padding: 0 20px; border-radius: 0 10px 10px 0;
  background: linear-gradient(135deg, #2E6BFF, #00D4FF);
  color: #fff; font-size: 14px; font-weight: 600;
  transition: opacity 0.25s, filter 0.25s;
}
.search-btn:hover { filter: brightness(1.08); }
.user-actions { display: flex; align-items: center; gap: 18px; flex-shrink: 0; }
.btn-login { font-size: 14px; color: var(--text-secondary); padding: 6px 0; }
.btn-login:hover { color: var(--accent); }
.btn-register {
  display: inline-flex; align-items: center; justify-content: center;
  height: 36px; padding: 0 20px; border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--accent); font-size: 14px; font-weight: 500;
  transition: all 0.3s;
}
.btn-register:hover { background: rgba(255, 255, 255, 0.1); border-color: var(--glass-border-hover); }
.menu-toggle {
  display: none; width: 40px; height: 40px; border-radius: 8px;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  border: 1px solid rgba(255, 255, 255, 0.15); background: rgba(255, 255, 255, 0.05);
}
.menu-toggle span { width: 18px; height: 2px; background: var(--text-main); border-radius: 2px; transition: all 0.3s; }
.category-nav {
  border-top: 1px solid rgba(148, 184, 255, 0.08);
  background: rgba(7, 11, 20, 0.5);
}
.category-nav .container { display: flex; align-items: center; height: 40px; gap: 28px; overflow-x: auto; scrollbar-width: none; }
.category-nav .container::-webkit-scrollbar { display: none; }
.category-nav a {
  position: relative; font-size: 14px; color: var(--text-secondary);
  white-space: nowrap; padding: 10px 0; transition: color 0.25s;
}
.category-nav a:hover { color: var(--text-main); }
.category-nav a.active { color: var(--accent); font-weight: 600; }
.category-nav a.active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0;
  height: 2px; background: var(--accent); border-radius: 2px;
}
/* ===== Hero 直播预告流 ===== */
.hero { padding: 48px 0 0; position: relative; }
.hero::before {
  content: ''; position: absolute; top: -60px; right: -80px; width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.07), transparent 65%);
  pointer-events: none;
}
.hero-glass {
  border-radius: var(--radius-lg); overflow: hidden;
  background: var(--glass-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass);
  padding: 20px;
}
.hero-cover {
  position: relative; border-radius: 18px; overflow: hidden;
  aspect-ratio: 21 / 10;
  background-color: var(--bg-panel);
}
.hero-cover img { width: 100%; height: 100%; object-fit: cover; }
.hero-cover::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(7, 11, 20, 0.92) 0%, rgba(7, 11, 20, 0.35) 55%, rgba(7, 11, 20, 0.1) 100%);
}
.hero-badge {
  position: absolute; top: 16px; left: 16px; z-index: 2;
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(0, 0, 0, 0.55); backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 5px 12px; border-radius: 6px; font-size: 12px; color: #fff;
}
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--success); box-shadow: 0 0 8px rgba(16, 217, 163, 0.8); }
.hero-overlay {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 2;
  padding: 24px 28px 32px;
}
.hero-overlay h1 {
  font-size: clamp(28px, 4.2vw, 48px);
  font-weight: 700; color: #fff; line-height: 1.25;
  margin-bottom: 8px; max-width: 680px;
}
.hero-overlay p {
  font-size: 15px; color: rgba(234, 242, 255, 0.85); max-width: 560px;
  line-height: 1.6;
}
/* 倒计时条 */
.countdown-bar {
  margin: 20px 0;
  display: flex; align-items: center; flex-wrap: wrap; gap: 20px;
  background: rgba(10, 14, 25, 0.6);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 18px 28px;
  position: relative;
  overflow: hidden;
}
.countdown-bar::before, .countdown-bar::after {
  content: ''; position: absolute; width: 120px; height: 120px;
  border-radius: 50%; background: radial-gradient(circle, rgba(0, 212, 255, 0.12), transparent 70%);
  pointer-events: none;
}
.countdown-bar::before { top: -60px; left: -30px; }
.countdown-bar::after { bottom: -70px; right: 30px; }
.countdown-label {
  font-size: 13px; color: var(--text-muted);
  position: relative; z-index: 1;
  display: flex; align-items: center; gap: 6px;
}
.countdown-label::before { content: '●'; color: var(--warning); font-size: 8px; }
.countdown { display: flex; align-items: center; gap: 20px; margin-left: auto; position: relative; z-index: 1; }
.countdown > div { display: flex; flex-direction: column; align-items: center; min-width: 48px; }
.countdown .num {
  font-family: var(--font-num); font-size: 44px; font-weight: 600;
  line-height: 1.1; color: var(--accent);
  text-shadow: 0 0 18px rgba(0, 212, 255, 0.45);
}
.countdown .unit { font-size: 12px; color: var(--text-muted); margin-top: 4px; letter-spacing: 0.1em; }
.countdown .sep { font-size: 28px; color: var(--text-muted); opacity: 0.5; align-self: center; padding-bottom: 14px; }
/* 看点列表 */
.hero-highlights { display: flex; gap: 16px; margin-bottom: 20px; }
.highlight-block {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  position: relative;
  transition: border-color 0.3s, transform 0.3s, background 0.3s;
  flex: 1;
}
.highlight-block:nth-child(2) { flex: 0 0 32%; }
.highlight-block:last-child { flex: 0 0 38%; }
.highlight-block:hover { border-color: var(--glass-border-hover); background: rgba(255, 255, 255, 0.08); transform: translateY(-2px); }
.highlight-block::before {
  content: ''; position: absolute; left: 0; top: 20px; bottom: 20px;
  width: 2px; background: transparent; border-radius: 2px; transition: background 0.3s;
}
.highlight-block:hover::before { background: var(--accent); }
.hl-num {
  font-family: var(--font-num); font-size: 22px; font-weight: 700;
  color: rgba(0, 212, 255, 0.6); display: block; margin-bottom: 10px;
}
.highlight-block p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
/* Hero CTA */
.hero-cta { display: flex; align-items: center; flex-wrap: wrap; gap: 16px; }
.hero-cta .btn-primary { min-width: 160px; }
.hero-cta .btn-ghost { min-width: 160px; }
.cta-tip { font-size: 12px; color: var(--text-muted); width: 100%; margin-top: 2px; }
/* ===== 区块通用 ===== */
.section { padding: var(--space-section) 0; position: relative; }
.section-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 32px;
}
.section-head h2 {
  font-size: clamp(22px, 3vw, 34px); font-weight: 600; color: var(--text-main);
  position: relative;
}
.section-head h2::after {
  content: ''; display: block; width: 40px; height: 3px; border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), transparent); margin-top: 8px;
}
.more-link {
  font-size: 14px; color: var(--text-secondary);
  display: inline-flex; align-items: center; gap: 6px;
  transition: color 0.3s, gap 0.3s;
}
.more-link:hover { color: var(--accent); gap: 10px; }
/* ===== 资讯列表 ===== */
.news-section { background: transparent; }
.news-section::before {
  content: ''; position: absolute; top: 0; left: -10%;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(46, 107, 255, 0.06), transparent 65%);
  pointer-events: none;
}
.news-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.news-card {
  background: rgba(13, 21, 38, 0.7);
  border: 1px solid rgba(148, 184, 255, 0.12);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.news-card:hover { transform: translateY(-4px); border-color: rgba(0, 212, 255, 0.3); box-shadow: var(--shadow-hover); }
.news-link { display: block; height: 100%; }
.news-thumb {
  position: relative; height: 160px; overflow: hidden;
  background: linear-gradient(135deg, #0D1526 0%, #1a2b52 50%, #1f3a5c 100%);
}
.news-thumb::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.15), transparent 60%);
}
.thumb-date {
  position: absolute; left: 14px; bottom: 12px; z-index: 1;
  font-family: var(--font-num); font-size: 13px; color: var(--accent);
  background: rgba(0, 0, 0, 0.45); padding: 3px 12px; border-radius: 6px;
  border: 1px solid rgba(0, 212, 255, 0.25);
}
.news-body { padding: 18px 20px 16px; }
.news-title {
  font-size: 16px; font-weight: 600; color: var(--text-main);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  margin-bottom: 8px; line-height: 1.4;
}
.news-card:hover .news-title { color: var(--accent); }
.news-summary {
  font-size: 14px; color: var(--text-secondary);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; line-height: 1.6; margin-bottom: 14px;
}
.news-meta {
  display: flex; align-items: center; gap: 10px;
  font-size: 12px; color: var(--text-muted);
}
.news-cat {
  display: inline-block; padding: 2px 10px; border-radius: 4px;
  background: rgba(0, 212, 255, 0.12); color: var(--accent); font-size: 12px;
}
.news-more { margin-left: auto; transition: color 0.3s, transform 0.3s; }
.news-card:hover .news-more { color: var(--accent); }
/* 空状态 */
.empty-state {
  grid-column: 1 / -1; padding: 60px 20px; text-align: center;
  background: rgba(13, 21, 38, 0.5); border-radius: var(--radius-md);
  border: 1px dashed rgba(148, 184, 255, 0.2);
}
.empty-icon {
  width: 40px; height: 40px; margin: 0 auto 16px; border-radius: 50%;
  background: linear-gradient(135deg, #2E6BFF, #00D4FF); opacity: 0.5;
}
.empty-state p { color: var(--text-secondary); font-size: 14px; }
/* ===== 能力区 ===== */
.capability-section { position: relative; }
.capability-section::before {
  content: ''; position: absolute; bottom: 60px; right: -60px; width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.05), transparent 65%);
  pointer-events: none;
}
.cap-row { display: flex; gap: 24px; margin-bottom: 32px; align-items: stretch; }
.cap-row:last-child { margin-bottom: 0; }
.cap-media {
  flex: 0 0 58%; border-radius: var(--radius-lg); overflow: hidden;
  min-height: 280px; position: relative;
}
.cap-media img { width: 100%; height: 100%; object-fit: cover; }
.cap-media::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(7, 11, 20, 0.5), transparent 60%);
}
.cap-panel {
  flex: 1; border-radius: var(--radius-lg); padding: 32px 30px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  display: flex; flex-direction: column; justify-content: center;
}
.cap-panel h3 {
  font-size: 20px; font-weight: 600; color: var(--text-main);
  margin-bottom: 14px;
}
.cap-panel h3 span { color: var(--accent); }
.cap-panel p { font-size: 14px; color: var(--text-secondary); line-height: 1.75; margin-bottom: 18px; }
.cap-list li {
  position: relative; padding-left: 20px; font-size: 14px; color: var(--text-main);
  margin-bottom: 8px;
}
.cap-list li::before {
  content: ''; position: absolute; left: 0; top: 9px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 6px rgba(0, 212, 255, 0.5);
}
.cap-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.cap-tags span {
  padding: 4px 14px; border-radius: 999px;
  background: rgba(46, 107, 255, 0.12);
  border: 1px solid rgba(46, 107, 255, 0.25);
  font-size: 13px; color: #B8D1FF;
}
.cap-row-2 .cap-media { order: 2; }
.cap-row-2 .cap-panel { order: 1; }
/* ===== 数据区 ===== */
.data-section {
  background: rgba(6, 9, 18, 0.6);
  border-top: 1px solid rgba(148, 184, 255, 0.08);
  border-bottom: 1px solid rgba(148, 184, 255, 0.08);
  padding: 56px 0;
}
.data-grid {
  display: flex; justify-content: center; gap: 48px; flex-wrap: wrap;
}
.data-item { text-align: center; min-width: 140px; }
.data-num {
  font-family: var(--font-num); font-size: 52px; font-weight: 700;
  background: linear-gradient(135deg, #2E6BFF, #00D4FF);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block; line-height: 1.2;
}
.data-label { display: block; font-size: 14px; color: var(--text-secondary); margin-top: 8px; }
/* ===== FAQ ===== */
.faq-section { position: relative; }
.faq-section::before {
  content: ''; position: absolute; top: 80px; left: -80px;
  width: 260px; height: 260px;
  background: radial-gradient(circle, rgba(46, 107, 255, 0.06), transparent 65%);
  pointer-events: none;
}
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  margin-bottom: 12px; overflow: hidden;
  transition: border-color 0.3s;
}
.faq-item.active { border-color: rgba(0, 212, 255, 0.35); }
.faq-question {
  display: flex; align-items: center; gap: 14px;
  padding: 0 22px; height: 52px; cursor: pointer;
}
.faq-q-badge {
  width: 24px; height: 24px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, #2E6BFF, #00D4FF);
  color: #fff; font-size: 13px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.faq-q-title { font-size: 15px; font-weight: 500; color: var(--text-main); flex: 1; }
.faq-icon {
  width: 24px; height: 24px; border-radius: 50%; flex-shrink: 0;
  border: 1px solid rgba(148, 184, 255, 0.3);
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.3s, border-color 0.3s;
  color: var(--accent); font-size: 14px; font-weight: 300;
}
.faq-item.active .faq-icon { transform: rotate(45deg); border-color: var(--accent); }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.3s ease, padding 0.3s ease;
}
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer-inner { padding: 2px 22px 18px 60px; font-size: 14px; color: var(--text-secondary); line-height: 1.8; }
.faq-guide { text-align: center; font-size: 14px; color: var(--text-muted); margin-bottom: 28px; }
/* ===== CTA 区 ===== */
.cta-section {
  position: relative; overflow: hidden;
  background: var(--bg-deep);
  padding: 80px 0;
}
.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.04) 1px, transparent 1px);
  background-size: 36px 36px;
}
.cta-section::after {
  content: ''; position: absolute; top: 50%; left: 40%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.08), transparent 65%);
  transform: translate(-50%, -50%);
}
.cta-inner {
  position: relative; z-index: 2; text-align: center;
  max-width: 640px; margin: 0 auto;
}
.cta-inner h2 {
  font-size: clamp(24px, 3.2vw, 36px); font-weight: 700; color: #fff;
  margin-bottom: 12px;
}
.cta-inner p { font-size: 14px; color: var(--text-secondary); margin-bottom: 32px; }
.cta-inner .btn-primary { min-width: 220px; }
/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(148, 184, 255, 0.08);
  padding-top: 56px;
}
.footer-divider {
  height: 1px; border: none;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.5), transparent);
  margin-bottom: 48px;
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px;
  padding-bottom: 40px;
}
.footer-brand .footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; max-width: 280px; }
.footer-links h4, .footer-contact h4 {
  font-size: 15px; font-weight: 600; color: var(--text-main);
  margin-bottom: 16px;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; color: var(--text-secondary); }
.footer-links a:hover { color: var(--accent); }
.footer-contact li { font-size: 14px; color: var(--text-secondary); margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.footer-contact .icon { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(148, 184, 255, 0.08);
  padding: 20px 0; text-align: center;
}
.footer-bottom p { font-size: 13px; color: var(--text-muted); }
/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .cap-row, .cap-row-2 { flex-direction: column; }
  .cap-media { flex: auto; min-height: 220px; }
  .cap-row-2 .cap-media { order: 1; }
  .cap-row-2 .cap-panel { order: 2; }
  .hero-highlights { flex-wrap: wrap; }
  .highlight-block, .highlight-block:nth-child(2), .highlight-block:last-child { flex: 1 1 45%; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  :root { --space-section: 56px; }
  .header-inner { flex-wrap: wrap; height: auto; padding: 12px 0; gap: 12px; }
  .menu-toggle { display: flex; }
  .search-box { order: 3; max-width: 100%; flex-basis: 100%; }
  .user-actions { gap: 12px; }
  .category-nav .container { height: auto; padding: 6px 16px; gap: 18px; }
  .hero { padding-top: 24px; }
  .hero-glass { padding: 14px; }
  .hero-cover { aspect-ratio: 16/10; }
  .hero-overlay { padding: 20px; }
  .hero-overlay h1 { font-size: 24px; }
  .hero-overlay p { font-size: 14px; }
  .countdown-bar { flex-direction: column; gap: 14px; padding: 16px 20px; }
  .countdown { margin-left: 0; }
  .countdown .num { font-size: 32px; }
  .hero-cta { gap: 12px; }
  .hero-cta .btn-primary, .hero-cta .btn-ghost { flex: 1; min-width: 0; height: 44px; font-size: 14px; }
  .news-grid { grid-template-columns: 1fr; }
  .data-grid { gap: 32px; }
  .data-num { font-size: 38px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .faq-answer-inner { padding-left: 22px; }
  .btn-primary, .btn-ghost { height: 44px; padding: 0 24px; font-size: 14px; }
}
@media (max-width: 520px) {
  .container { padding: 0 14px; }
  .logo { margin-right: auto; }
  .logo-text { font-size: 17px; }
  .logo-icon { width: 30px; height: 30px; font-size: 15px; }
  .user-actions .btn-register { padding: 0 14px; height: 32px; font-size: 13px; }
  .hero-highlights { flex-direction: column; }
  .highlight-block, .highlight-block:nth-child(2), .highlight-block:last-child { flex: 1 1 100%; }
  .data-grid { flex-direction: column; align-items: center; gap: 24px; }
  .cta-section { padding: 60px 0; }
  .cta-inner .btn-primary { width: 100%; min-width: 0; }
}

/* roulang page: article */
:root {
    --bg-root: #070B14;
    --bg-panel: #0D1526;
    --bg-deep: #060912;
    --glass-bg: rgba(15, 23, 42, 0.66);
    --glass-bg2: rgba(10, 14, 25, 0.6);
    --primary: #2E6BFF;
    --accent: #00D4FF;
    --success: #10D9A3;
    --warning: #F5A524;
    --text-main: #EAF2FF;
    --text-secondary: #9FB3D9;
    --text-muted: #5C7299;
    --border-glass: rgba(148, 184, 255, 0.16);
    --border-hover: rgba(0, 212, 255, 0.35);
    --radius-btn: 12px;
    --radius-card: 16px;
    --radius-panel: 24px;
    --radius-full: 999px;
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.25);
    --shadow-card-hover: 0 12px 28px rgba(0, 0, 0, 0.4);
    --shadow-glass: 0 16px 40px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.12);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.28);
    --shadow-glow-hover: 0 0 40px rgba(0, 212, 255, 0.45);
    --sp-section: 80px;
    --sp-section-mobile: 48px;
    --container-max: 1200px;
    --container-pad: 24px;
    --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
    --font-num: "DIN Alternate", "Rajdhani", "PingFang SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-cn);
    background-color: var(--bg-root);
    background-image: radial-gradient(ellipse at 15% 8%, rgba(0, 212, 255, 0.05) 0%, transparent 45%), radial-gradient(ellipse at 90% 85%, rgba(46, 107, 255, 0.06) 0%, transparent 40%);
    background-attachment: fixed;
    color: var(--text-main);
    font-size: 15px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}
a { color: inherit; text-decoration: none; transition: color .25s ease; }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; font-size: inherit; border: none; outline: none; }
ul, ol { list-style: none; }
.container { max-width: var(--container-max); margin: 0 auto; padding-left: var(--container-pad); padding-right: var(--container-pad); }
section { position: relative; }

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(7, 11, 20, 0.82);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(148, 184, 255, 0.1);
}
.header-main {
    display: flex;
    align-items: center;
    gap: 24px;
    height: 72px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    min-width: 180px;
}
.logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    box-shadow: 0 0 16px rgba(0, 212, 255, 0.3);
}
.logo-text { font-size: 20px; font-weight: 700; letter-spacing: .02em; color: var(--text-main); }
.search-form {
    flex: 1;
    max-width: 560px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    height: 42px;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--radius-btn);
    padding: 0 4px 0 14px;
    transition: border-color .3s ease, box-shadow .3s ease;
}
.search-form:focus-within {
    border-color: rgba(0, 212, 255, 0.6);
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.15);
}
.search-icon { width: 18px; height: 18px; color: var(--text-muted); flex-shrink: 0; }
.search-form input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 14px;
    padding: 0 10px;
    min-width: 0;
}
.search-form input::placeholder { color: var(--text-muted); }
.search-form input:focus { outline: none; }
.search-submit {
    height: 34px;
    padding: 0 16px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: box-shadow .3s ease, transform .15s ease;
    flex-shrink: 0;
}
.search-submit:hover { box-shadow: var(--shadow-glow); }
.search-submit:active { transform: scale(0.97); }
.user-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.login-link { font-size: 14px; color: var(--text-secondary); padding: 6px 4px; }
.login-link:hover { color: var(--accent); }
.register-btn {
    display: inline-block;
    height: 36px;
    line-height: 34px;
    padding: 0 18px;
    border-radius: var(--radius-btn);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--accent);
    font-size: 14px;
    transition: border-color .3s, background-color .3s;
}
.register-btn:hover { border-color: rgba(0, 212, 255, 0.45); background: rgba(255, 255, 255, 0.1); color: var(--accent); }
.nav-toggle { display: none; background: transparent; cursor: pointer; width: 40px; height: 40px; border-radius: 8px; align-items: center; justify-content: center; flex-direction: column; gap: 5px; }
.nav-toggle .bar { width: 20px; height: 2px; background: var(--text-main); border-radius: 2px; }

/* ===== Category Nav ===== */
.category-nav { border-top: 1px solid rgba(148, 184, 255, 0.06); background: rgba(7, 11, 20, 0.5); }
.category-nav .container { display: flex; gap: 4px; height: 40px; align-items: center; overflow-x: auto; scrollbar-width: none; }
.category-nav .container::-webkit-scrollbar { display: none; }
.category-nav a {
    position: relative;
    display: inline-flex;
    align-items: center;
    height: 40px;
    padding: 0 16px;
    font-size: 14px;
    color: var(--text-secondary);
    white-space: nowrap;
    transition: color .3s ease;
}
.category-nav a::after {
    content: '';
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 0;
    height: 2px;
    border-radius: 2px 2px 0 0;
    background: var(--accent);
    opacity: 0;
    transform: scaleX(0.5);
    transition: opacity .3s, transform .3s;
}
.category-nav a:hover { color: var(--text-main); }
.category-nav a:hover::after { opacity: 0.5; transform: scaleX(1); }
.category-nav a.active { color: var(--accent); }
.category-nav a.active::after { opacity: 1; transform: scaleX(1); }

/* ===== Breadcrumb ===== */
.breadcrumb-wrap { padding: 20px 0 0; }
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
    flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-secondary); transition: color .3s; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--text-muted); opacity: 0.6; }
.breadcrumb .current {
    color: var(--text-main);
    max-width: 320px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===== Article Hero ===== */
.article-hero {
    position: relative;
    margin-top: 20px;
    border-radius: var(--radius-panel);
    overflow: hidden;
    background: linear-gradient(135deg, rgba(13, 21, 38, 0.95), rgba(7, 11, 20, 0.88));
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-glass);
}
.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    opacity: 0.18;
    pointer-events: none;
}
.article-hero::after {
    content: '';
    position: absolute;
    top: -80px;
    right: -40px;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1), transparent 70%);
    pointer-events: none;
}
.article-hero-inner {
    position: relative;
    z-index: 1;
    padding: 40px 40px 32px;
}
.category-line {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 4px 14px;
    border: 1px solid var(--border-glass);
}
.live-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 8px rgba(16, 217, 163, 0.7);
    animation: pulse 2s infinite ease-in-out;
}
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.85); }
}
.article-title {
    font-size: clamp(26px, 4vw, 38px);
    font-weight: 700;
    line-height: 1.35;
    color: var(--text-main);
    margin-bottom: 20px;
    letter-spacing: 0.01em;
}
.article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 13px;
    color: var(--text-muted);
}
.meta-item { display: inline-flex; align-items: center; gap: 6px; }
.meta-divider { color: rgba(148, 184, 255, 0.25); }
.meta-item svg { width: 15px; height: 15px; color: var(--text-muted); }

/* ===== Article Main ===== */
.article-main { padding: 48px 0 0; }
.article-container { max-width: 780px; margin: 0 auto; }
.article-content {
    font-size: 16px;
    line-height: 1.85;
    color: var(--text-main);
    word-break: break-word;
}
.article-content > * + * { margin-top: 24px; }
.article-content p { margin-bottom: 24px; color: #D6E4F8; }
.article-content h2 {
    font-size: 24px;
    font-weight: 600;
    line-height: 1.4;
    margin-top: 40px;
    margin-bottom: 16px;
    color: var(--text-main);
    padding-left: 14px;
    border-left: 3px solid var(--accent);
}
.article-content h3 {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.4;
    margin-top: 32px;
    margin-bottom: 14px;
    color: #fff;
}
.article-content h4 {
    font-size: 17px;
    font-weight: 600;
    margin-top: 24px;
    margin-bottom: 12px;
    color: var(--text-main);
}
.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    margin: 28px 0;
}
.article-content blockquote {
    border-left: 3px solid var(--accent);
    background: rgba(0, 212, 255, 0.05);
    padding: 20px 22px;
    border-radius: 0 14px 14px 0;
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 28px;
}
.article-content ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: 24px;
}
.article-content ul li {
    position: relative;
    padding-left: 22px;
    margin-bottom: 10px;
    color: #D6E4F8;
}
.article-content ul li::before {
    content: '';
    position: absolute;
    left: 4px;
    top: 12px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    box-shadow: 0 0 6px rgba(0, 212, 255, 0.4);
}
.article-content ol {
    list-style: decimal;
    padding-left: 22px;
    margin-bottom: 24px;
}
.article-content ol li { margin-bottom: 10px; color: #D6E4F8; }
.article-content a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 4px;
    text-decoration-color: rgba(0, 212, 255, 0.35);
    transition: text-decoration-color .3s;
}
.article-content a:hover { text-decoration-color: var(--accent); }
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 28px 0;
    font-size: 14px;
    border-radius: 12px;
    overflow: hidden;
}
.article-content table th {
    background: rgba(46, 107, 255, 0.2);
    color: var(--text-main);
    padding: 12px 14px;
    text-align: left;
    font-weight: 600;
}
.article-content table td {
    padding: 12px 14px;
    border-bottom: 1px solid rgba(148, 184, 255, 0.1);
    color: #C6D6F0;
}
.article-content table tr:last-child td { border-bottom: none; }
.article-content pre {
    background: rgba(10, 14, 25, 0.8);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 20px;
    overflow-x: auto;
    font-size: 14px;
    line-height: 1.7;
    color: #D6E4F8;
    margin-bottom: 24px;
}
.article-content code { font-family: "SFMono-Regular", Consolas, monospace; font-size: 14px; }
.article-content iframe { width: 100%; aspect-ratio: 16 / 9; border: none; border-radius: 16px; margin: 28px 0; }

/* ===== Not Found ===== */
.not-found {
    text-align: center;
    padding: 80px 24px;
    border-radius: var(--radius-panel);
    background: var(--bg-panel);
    border: 1px solid var(--border-glass);
}
.not-found-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(46, 107, 255, 0.2), rgba(0, 212, 255, 0.15));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--accent);
}
.not-found p { font-size: 18px; color: var(--text-main); margin-bottom: 24px; }
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 48px;
    padding: 0 28px;
    border-radius: var(--radius-btn);
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    box-shadow: var(--shadow-glow);
    transition: box-shadow .3s ease, transform .15s ease, filter .3s ease;
    cursor: pointer;
    border: none;
}
.btn-primary:hover { box-shadow: var(--shadow-glow-hover); transform: translateY(-1px); filter: brightness(1.08); }
.btn-primary:active { transform: scale(0.98); }
.btn-primary:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* ===== Article CTA / Back Bar ===== */
.article-cta {
    margin-top: 72px;
    padding: 64px 0;
    background: linear-gradient(180deg, var(--bg-root), #0A1120), url('/assets/images/backpic/back-2.webp') center/cover;
    border-top: 1px solid var(--border-glass);
    border-bottom: 1px solid var(--border-glass);
    position: relative;
    overflow: hidden;
}
.article-cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.08), transparent 70%);
    pointer-events: none;
}
.article-cta .container { position: relative; z-index: 1; text-align: center; }
.article-cta h2 { font-size: clamp(22px, 3vw, 30px); font-weight: 700; color: var(--text-main); margin-bottom: 12px; }
.article-cta p { font-size: 15px; color: var(--text-secondary); margin-bottom: 32px; }
.cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; margin-bottom: 28px; }
.btn-glass {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 48px;
    padding: 0 28px;
    border-radius: var(--radius-btn);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--accent);
    font-size: 15px;
    font-weight: 500;
    transition: border-color .3s, background-color .3s, transform .15s;
    cursor: pointer;
}
.btn-glass:hover { border-color: rgba(0, 212, 255, 0.45); background: rgba(255, 255, 255, 0.1); color: var(--accent); transform: translateY(-1px); }
.btn-glass:active { transform: scale(0.98); }
.btn-glass:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.cta-backlinks { display: flex; justify-content: center; gap: 12px; align-items: center; }
.cta-backlinks a { font-size: 13px; color: var(--text-muted); padding: 6px 10px; border-radius: 8px; transition: color .3s, background-color .3s; }
.cta-backlinks a:hover { color: var(--accent); background: rgba(0, 212, 255, 0.08); }
.cta-backlinks .dot { color: var(--text-muted); opacity: 0.5; }

/* ===== Related Section ===== */
.related-section { padding: 72px 0 24px; }
.related-section .section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
}
.related-section .section-head h2 {
    font-size: clamp(22px, 2.6vw, 28px);
    font-weight: 700;
    color: var(--text-main);
    position: relative;
    padding-left: 16px;
}
.related-section .section-head h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 3px;
    border-radius: 3px;
    background: linear-gradient(180deg, var(--primary), var(--accent));
    box-shadow: 0 0 8px rgba(0, 212, 255, 0.4);
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.related-card {
    display: flex;
    flex-direction: column;
    background: rgba(13, 21, 38, 0.7);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-card);
    overflow: hidden;
    transition: border-color .3s ease, transform .3s ease, box-shadow .3s ease;
}
.related-card:hover {
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
}
.related-cover {
    width: 100%;
    aspect-ratio: 16 / 9;
    background-position: center;
    background-size: cover;
    position: relative;
}
.related-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(7, 11, 20, 0.85));
}
.related-body { padding: 20px 22px 24px; }
.related-tag {
    display: inline-block;
    font-size: 12px;
    color: var(--accent);
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    padding: 2px 10px;
    border-radius: 12px;
    margin-bottom: 12px;
}
.related-body h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.5;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.related-body p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== Footer ===== */
.site-footer { background: var(--bg-deep); margin-top: 48px; }
.footer-divider { height: 1px; border: none; background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.5), transparent); }
.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 40px;
    padding: 56px 0 40px;
}
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo .logo-icon { width: 34px; height: 34px; font-size: 16px; border-radius: 9px; }
.footer-logo .logo-text { font-size: 18px; font-weight: 700; }
.footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.9; margin-bottom: 20px; max-width: 320px; }
.footer-links h4 { font-size: 15px; font-weight: 600; color: var(--text-main); margin-bottom: 18px; }
.footer-links ul li { margin-bottom: 12px; }
.footer-links ul a { font-size: 14px; color: var(--text-secondary); transition: color .3s; }
.footer-links ul a:hover { color: var(--accent); }
.footer-contact h4 { font-size: 15px; font-weight: 600; color: var(--text-main); margin-bottom: 18px; }
.footer-contact ul li { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-secondary); margin-bottom: 12px; }
.footer-contact .icon { color: var(--accent); font-size: 13px; width: 20px; flex-shrink: 0; }
.footer-bottom { border-top: 1px solid rgba(148, 184, 255, 0.08); padding: 20px 0; text-align: center; }
.footer-bottom p { font-size: 13px; color: var(--text-muted); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    :root { --sp-section: 64px; }
    .header-main { gap: 16px; }
    .search-form { max-width: 420px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .article-hero-inner { padding: 32px 28px 28px; }
}
@media (max-width: 768px) {
    :root { --sp-section: 48px; --container-pad: 16px; }
    .header-main { flex-wrap: wrap; height: auto; padding-top: 14px; padding-bottom: 14px; position: relative; }
    .logo { order: 1; min-width: 0; }
    .nav-toggle { display: flex; order: 3; }
    .user-actions { display: none; order: 4; width: 100%; padding-top: 12px; border-top: 1px solid rgba(148, 184, 255, 0.08); }
    .user-actions.open { display: flex; }
    .search-form { order: 10; max-width: 100%; width: 100%; margin-top: 12px; }
    .category-nav { order: 11; }
    .category-nav .container { height: 40px; overflow-x: auto; }
    .related-grid { grid-template-columns: 1fr; gap: 16px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .article-hero-inner { padding: 28px 20px 24px; }
    .article-title { font-size: 24px; }
    .cta-buttons { flex-direction: column; align-items: center; }
    .btn-primary, .btn-glass { width: 100%; max-width: 280px; }
    .article-content { font-size: 15px; }
    .article-content h2 { font-size: 21px; }
    .article-content h3 { font-size: 18px; }
    .breadcrumb .current { max-width: 180px; }
}
@media (max-width: 520px) {
    .container { padding-left: 16px; padding-right: 16px; }
    .header-main { padding-top: 12px; padding-bottom: 12px; }
    .logo-text { font-size: 17px; }
    .logo-icon { width: 32px; height: 32px; font-size: 15px; }
    .search-form { margin-top: 10px; }
    .article-hero-inner { padding: 24px 16px 20px; }
    .article-title { font-size: 21px; line-height: 1.4; }
    .article-meta { gap: 10px; font-size: 12px; }
    .related-section { padding-top: 48px; }
    .article-cta { padding: 48px 0; }
    .article-cta h2 { font-size: 20px; }
    .footer-grid { padding: 40px 0 32px; gap: 28px; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* roulang page: category1 */
:root {
  --bg: #070B14;
  --bg-deep: #0A1120;
  --bg-panel: #0D1526;
  --glass-bg: rgba(15, 23, 42, 0.66);
  --glass-border: rgba(148, 184, 255, 0.16);
  --primary: #2E6BFF;
  --accent: #00D4FF;
  --success: #10D9A3;
  --warning: #F5A524;
  --text-main: #EAF2FF;
  --text-secondary: #9FB3D9;
  --text-muted: #5C7299;
  --glow: 0 0 20px rgba(0, 212, 255, 0.28);
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-card-hover: 0 12px 28px rgba(0, 0, 0, 0.4);
  --shadow-glass: 0 16px 40px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.12);
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "DIN Alternate", "Rajdhani", "PingFang SC", sans-serif;
  --transition: 0.3s ease;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-cn);
  background: var(--bg);
  background-image: radial-gradient(circle at 15% 10%, rgba(0, 212, 255, 0.05), transparent 40%), radial-gradient(circle at 85% 70%, rgba(46, 107, 255, 0.05), transparent 40%);
  background-attachment: fixed;
  color: var(--text-main);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.3s ease;
}
a:hover {
  color: #4EE3FF;
}
button {
  font-family: inherit;
  cursor: pointer;
}
input {
  font-family: inherit;
}
ul, ol {
  list-style: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 72px 0;
}
.section-head {
  margin-bottom: 40px;
}
.section-head h2 {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-main);
}
.section-head p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-top: 8px;
  max-width: 720px;
}
.section-head.center {
  text-align: center;
}
.section-head.center p {
  margin-left: auto;
  margin-right: auto;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 11, 20, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(148, 184, 255, 0.1);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
  color: #fff;
  box-shadow: var(--glow);
}
.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  white-space: nowrap;
  letter-spacing: 0.5px;
}
.search-box {
  flex: 1;
  max-width: 560px;
  height: 42px;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.search-box:focus-within {
  border-color: rgba(0, 212, 255, 0.6);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}
.search-box svg {
  margin-left: 14px;
  flex-shrink: 0;
  color: var(--text-muted);
}
.search-box input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  padding: 0 12px;
  font-size: 14px;
  min-width: 0;
}
.search-box input::placeholder {
  color: var(--text-muted);
}
.search-box button {
  height: 100%;
  padding: 0 20px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border: none;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transition: filter 0.3s ease;
  white-space: nowrap;
}
.search-box button:hover {
  filter: brightness(1.12);
}
.user-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
  flex-shrink: 0;
}
.login-link {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
}
.login-link:hover {
  color: var(--text-main);
}
.mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid rgba(148, 184, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  flex-shrink: 0;
}
.mobile-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: 0.3s;
}
.category-nav {
  border-top: 1px solid rgba(148, 184, 255, 0.08);
}
.category-nav .container {
  display: flex;
  gap: 32px;
  height: 40px;
  align-items: center;
  overflow-x: auto;
  scrollbar-width: none;
}
.category-nav .container::-webkit-scrollbar {
  display: none;
}
.category-nav a {
  color: var(--text-secondary);
  font-size: 14px;
  position: relative;
  height: 40px;
  display: flex;
  align-items: center;
  white-space: nowrap;
  transition: color 0.3s ease;
}
.category-nav a:hover {
  color: var(--text-main);
}
.category-nav a.active {
  color: var(--accent);
}
.category-nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-weight: 600;
  border: none;
  transition: all 0.3s ease;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: var(--glow);
}
.btn-primary:hover {
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.45);
  color: #fff;
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: scale(0.98);
}
.btn-primary:focus-visible {
  outline: 3px solid rgba(0, 212, 255, 0.6);
  outline-offset: 2px;
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--accent);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(0, 212, 255, 0.35);
  color: var(--accent);
}
.btn-ghost:active {
  transform: scale(0.98);
}
.btn-sm {
  height: 32px;
  padding: 0 16px;
  font-size: 13px;
}
.btn-nm {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
}
.btn-lg {
  height: 48px;
  padding: 0 28px;
  font-size: 15px;
}

/* ===== Hero ===== */
.hero {
  padding: 48px 0 72px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  align-items: start;
}
.hero-cover {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 21 / 9;
  box-shadow: var(--shadow-glass);
  border: 1px solid rgba(148, 184, 255, 0.14);
}
.hero-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 11, 20, 0.15) 0%, rgba(7, 11, 20, 0.1) 40%, rgba(7, 11, 20, 0.88) 100%);
  pointer-events: none;
}
.hero-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--text-main);
  backdrop-filter: blur(8px);
}
.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px rgba(16, 217, 163, 0.7);
  animation: pulse 1.6s ease infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}
.hero-content {
  position: absolute;
  bottom: 24px;
  left: 24px;
  right: 24px;
  z-index: 2;
}
.hero-content h1 {
  font-size: clamp(28px, 4.2vw, 48px);
  font-weight: 700;
  line-height: 1.25;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.6);
}
.hero-content p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-top: 8px;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.5);
}
.countdown-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-top: 20px;
  box-shadow: var(--shadow-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
}
.countdown-bar::before {
  content: "";
  position: absolute;
  width: 140px;
  height: 140px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.08), transparent 70%);
  top: -50px;
  left: -30px;
  pointer-events: none;
}
.countdown-bar::after {
  content: "";
  position: absolute;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(46, 107, 255, 0.07), transparent 70%);
  bottom: -40px;
  right: 8%;
  pointer-events: none;
}
.countdown-label {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
  flex-shrink: 0;
  border-right: 1px solid rgba(148, 184, 255, 0.14);
  padding-right: 24px;
}
.countdown-items {
  display: flex;
  align-items: center;
  gap: 14px;
}
.count-item {
  text-align: center;
}
.count-item .num {
  font-family: var(--font-num);
  font-size: 44px;
  font-weight: 600;
  color: var(--accent);
  text-shadow: var(--glow);
  line-height: 1;
  letter-spacing: 2px;
}
.count-item .unit {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}
.count-sep {
  font-family: var(--font-num);
  font-size: 26px;
  color: rgba(0, 212, 255, 0.35);
  font-weight: 700;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 20px;
  flex-wrap: wrap;
}
.hero-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 10px;
}
.content-block {
  margin-top: 28px;
  background: rgba(13, 21, 38, 0.5);
  border: 1px solid rgba(148, 184, 255, 0.1);
  border-radius: var(--radius);
  padding: 28px 32px;
}
.content-block p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.9;
  margin-bottom: 16px;
}
.content-block p:last-child {
  margin-bottom: 0;
}

/* ===== Hero Side ===== */
.hero-side {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.side-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 20px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-glass);
}
.side-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-main);
}
.side-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 0;
  border-bottom: 1px dashed rgba(148, 184, 255, 0.12);
  font-size: 13px;
}
.side-list li:last-child {
  border-bottom: none;
}
.side-list .label {
  color: var(--text-muted);
}
.side-list .value {
  color: var(--text-secondary);
  text-align: right;
}
.side-img {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(148, 184, 255, 0.12);
  box-shadow: var(--shadow-card);
}
.side-img img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}
.side-cta {
  background: linear-gradient(135deg, rgba(46, 107, 255, 0.18), rgba(0, 212, 255, 0.08));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  backdrop-filter: blur(12px);
}
.side-cta h4 {
  font-size: 17px;
  margin-bottom: 8px;
  color: var(--text-main);
}
.side-cta p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}

/* ===== Stats ===== */
.stats-band {
  background: linear-gradient(135deg, rgba(46, 107, 255, 0.12), rgba(0, 212, 255, 0.06));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.stats-band::before {
  content: "";
  position: absolute;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.06), transparent 70%);
  top: -80px;
  right: 15%;
  pointer-events: none;
}
.stat-item .stat-num {
  font-family: var(--font-num);
  font-size: 42px;
  font-weight: 700;
  color: var(--accent);
  text-shadow: var(--glow);
  line-height: 1.2;
  letter-spacing: 1px;
}
.stat-item .stat-label {
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 8px;
  line-height: 1.6;
}

/* ===== Features ===== */
.feature-row {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
  align-items: stretch;
}
.feature-row:last-child {
  margin-bottom: 0;
}
.feature-row.reverse {
  grid-template-columns: 1fr 1.6fr;
}
.feature-photo {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  min-height: 260px;
  border: 1px solid rgba(148, 184, 255, 0.12);
  box-shadow: var(--shadow-card);
}
.feature-photo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.feature-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(7, 11, 20, 0.88) 100%);
}
.photo-inner {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 28px;
  z-index: 1;
}
.photo-inner h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-main);
}
.photo-inner p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 6px;
  line-height: 1.8;
}
.feature-panel {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 32px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-shadow: var(--shadow-glass);
  position: relative;
  overflow: hidden;
}
.feature-panel::after {
  content: "";
  position: absolute;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.05), transparent 70%);
  bottom: -30px;
  right: -30px;
  pointer-events: none;
}
.feature-panel .num {
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.65;
  margin-bottom: 12px;
  letter-spacing: 2px;
}
.feature-panel h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-main);
}
.feature-panel p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.85;
}

/* ===== Scenarios ===== */
.scenario-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.4fr;
  gap: 20px;
}
.scenario-card {
  background: rgba(13, 21, 38, 0.72);
  border: 1px solid rgba(148, 184, 255, 0.12);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  position: relative;
}
.scenario-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  bottom: 24px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  border-radius: 2px;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.scenario-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: var(--shadow-card-hover);
}
.scenario-card:hover::before {
  opacity: 1;
}
.scenario-card .icon {
  font-size: 28px;
  margin-bottom: 14px;
  display: block;
}
.scenario-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-main);
}
.scenario-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.85;
}

/* ===== Process ===== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.process-step {
  text-align: center;
  padding: 30px 20px;
  background: rgba(13, 21, 38, 0.6);
  border: 1px solid rgba(148, 184, 255, 0.12);
  border-radius: var(--radius);
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.process-step:hover {
  border-color: rgba(0, 212, 255, 0.3);
  transform: translateY(-3px);
}
.step-num {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-num);
  font-weight: 700;
  color: #fff;
  font-size: 15px;
  margin: 0 auto 16px;
  box-shadow: var(--glow);
}
.process-step h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-main);
}
.process-step p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: border-color 0.3s ease;
}
.faq-item.open {
  border-color: rgba(0, 212, 255, 0.35);
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 15px;
  font-weight: 600;
  padding: 16px 20px;
  border-radius: var(--radius);
  text-align: left;
  transition: color 0.3s ease;
}
.faq-q:hover {
  color: var(--accent);
}
.faq-q:focus-visible {
  outline: 2px solid rgba(0, 212, 255, 0.5);
  outline-offset: 2px;
}
.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid rgba(148, 184, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: var(--accent);
  flex-shrink: 0;
  transition: transform 0.3s ease, background 0.3s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: rgba(0, 212, 255, 0.12);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  padding: 0 20px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.85;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-item.open .faq-a {
  max-height: 320px;
  padding: 0 20px 16px;
}

/* ===== CTA ===== */
.cta-band {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  padding: 72px 40px;
  text-align: center;
  margin: 72px 0;
  background: linear-gradient(135deg, #0A1120, #0D1526);
  border: 1px solid rgba(148, 184, 255, 0.1);
}
.cta-band::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: 36px 36px;
  pointer-events: none;
}
.cta-band::after {
  content: "";
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.1), transparent 70%);
  left: 18%;
  top: -140px;
  pointer-events: none;
}
.cta-band .cta-inner {
  position: relative;
  z-index: 1;
}
.cta-band h2 {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 600;
  line-height: 1.3;
}
.cta-band p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 12px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  padding: 0 44px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border-radius: 12px;
  border: none;
  box-shadow: var(--glow);
  transition: all 0.3s ease;
  margin-top: 28px;
}
.btn-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.45);
  color: #fff;
}
.btn-cta:active {
  transform: scale(0.98);
}
.btn-cta:focus-visible {
  outline: 3px solid rgba(0, 212, 255, 0.6);
  outline-offset: 2px;
}
.cta-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 14px;
}

/* ===== Footer ===== */
.site-footer {
  background: #060912;
  padding-top: 48px;
  margin-top: 40px;
}
.footer-divider {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.5), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
  padding: 40px 0;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.footer-logo .logo-icon {
  width: 32px;
  height: 32px;
  font-size: 16px;
  border-radius: 8px;
}
.footer-logo .logo-text {
  font-size: 18px;
}
.footer-brand p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.8;
  max-width: 340px;
}
.footer-links h4,
.footer-contact h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 14px;
}
.footer-links ul,
.footer-contact ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-links a {
  color: var(--text-secondary);
  font-size: 14px;
}
.footer-links a:hover {
  color: var(--accent);
}
.footer-contact li {
  color: var(--text-secondary);
  font-size: 14px;
}
.footer-contact .icon {
  color: var(--accent);
  margin-right: 6px;
}
.footer-bottom {
  border-top: 1px solid rgba(148, 184, 255, 0.08);
  padding: 18px 0;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .feature-row,
  .feature-row.reverse {
    grid-template-columns: 1fr;
  }
  .stats-band {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }
  .scenario-grid {
    grid-template-columns: 1fr 1fr;
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}
@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 0;
    gap: 12px;
  }
  .search-box {
    order: 3;
    flex-basis: 100%;
    max-width: 100%;
    height: 40px;
  }
  .mobile-toggle {
    display: flex;
    margin-left: auto;
  }
  .user-actions {
    display: none;
  }
  .user-actions.mobile-open {
    display: flex;
    position: absolute;
    top: 106px;
    right: 16px;
    z-index: 200;
    flex-direction: column;
    gap: 12px;
    background: rgba(13, 21, 38, 0.96);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 16px 20px;
    box-shadow: var(--shadow-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
  }
  .login-link {
    font-size: 15px;
  }
  .section {
    padding: 48px 0;
  }
  .hero {
    padding: 32px 0 48px;
  }
  .countdown-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .countdown-label {
    border-right: none;
    border-bottom: 1px solid rgba(148, 184, 255, 0.14);
    padding-right: 0;
    padding-bottom: 10px;
    width: 100%;
  }
  .countdown-items {
    width: 100%;
    justify-content: space-between;
  }
  .count-sep {
    display: none;
  }
  .count-item .num {
    font-size: 34px;
  }
  .count-item .unit {
    font-size: 11px;
  }
  .hero-actions .btn {
    flex: 1;
    text-align: center;
  }
  .content-block {
    padding: 20px;
  }
  .scenario-grid {
    grid-template-columns: 1fr;
  }
  .cta-band {
    padding: 56px 20px;
    margin: 48px 0;
  }
  .category-nav .container {
    gap: 20px;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .logo-text {
    font-size: 17px;
  }
  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 16px;
  }
  .search-box button {
    padding: 0 14px;
    font-size: 13px;
  }
  .stats-band {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 28px 16px;
  }
  .stat-item .stat-num {
    font-size: 30px;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .feature-photo {
    min-height: 220px;
  }
  .feature-panel {
    padding: 24px;
  }
  .cta-band h2 {
    font-size: 22px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn {
    width: 100%;
  }
}

/* roulang page: category2 */
:root {
      --bg-root: #070B14;
      --bg-panel: #0D1526;
      --bg-elevated: #111C30;
      --bg-deep: #060912;
      --primary: #2E6BFF;
      --accent: #00D4FF;
      --success: #10D9A3;
      --warning: #F5A524;
      --text-main: #EAF2FF;
      --text-secondary: #9FB3D9;
      --text-muted: #5C7299;
      --border-glass: rgba(148, 184, 255, 0.16);
      --border-hover: rgba(0, 212, 255, 0.35);
      --radius-sm: 10px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.25);
      --shadow-card-hover: 0 12px 28px rgba(0, 0, 0, 0.4);
      --shadow-glass: 0 16px 40px rgba(0, 0, 0, 0.3);
      --glow-primary: 0 0 20px rgba(0, 212, 255, 0.28);
      --glow-hover: 0 0 40px rgba(0, 212, 255, 0.45);
      --font-cn: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --font-num: 'DIN Alternate', 'Rajdhani', var(--font-cn);
      --header-h: 72px;
      --container-w: 1200px;
      --space-section: 88px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-cn);
      font-size: 15px;
      line-height: 1.8;
      color: var(--text-main);
      background: var(--bg-root);
      background-image: radial-gradient(ellipse at 80% 10%, rgba(46, 107, 255, 0.08), transparent 60%), radial-gradient(ellipse at 10% 90%, rgba(0, 212, 255, 0.04), transparent 50%);
      min-height: 100vh;
      -webkit-font-smoothing: antialiased;
    }

    img {
      max-width: 100%;
      display: block;
      border-radius: var(--radius-md);
    }

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

    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
    }
    button:focus-visible,
    a:focus-visible,
    input:focus-visible {
      outline: 3px solid rgba(0, 212, 255, 0.6);
      outline-offset: 2px;
    }

    input {
      font-family: inherit;
      border: none;
      outline: none;
    }

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

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 40px;
      padding: 0 22px;
      border-radius: 12px;
      font-size: 14px;
      font-weight: 500;
      letter-spacing: 0.02em;
      transition: all 0.25s ease;
      white-space: nowrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      box-shadow: var(--glow-primary);
    }
    .btn-primary:hover {
      box-shadow: var(--glow-hover);
      transform: translateY(-1px);
      color: #fff;
    }
    .btn-primary:active {
      transform: scale(0.98);
    }
    .btn-ghost {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: var(--accent);
    }
    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: var(--border-hover);
      color: var(--accent);
    }
    .btn-lg {
      height: 52px;
      padding: 0 36px;
      font-size: 16px;
      border-radius: 14px;
    }
    .btn-sm {
      height: 32px;
      padding: 0 16px;
      font-size: 13px;
      border-radius: 10px;
    }
    .btn-block {
      width: 100%;
    }

    .text-link {
      color: var(--text-secondary);
      font-size: 14px;
    }
    .text-link:hover {
      color: var(--accent);
    }

    /* ===== Header ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(7, 11, 20, 0.8);
      -webkit-backdrop-filter: blur(18px);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(148, 184, 255, 0.1);
    }

    .header-main {
      display: flex;
      align-items: center;
      gap: 24px;
      height: var(--header-h);
    }

    .header-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
      width: 180px;
    }
    .logo-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 28px;
      height: 28px;
      border-radius: 8px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      font-size: 16px;
      font-weight: 700;
      box-shadow: 0 0 12px rgba(0, 212, 255, 0.4);
    }
    .logo-text {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: 0.02em;
      background: linear-gradient(90deg, #EAF2FF, var(--accent));
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .header-search {
      display: flex;
      align-items: center;
      flex: 0 1 560px;
      min-width: 0;
      margin: 0 auto;
      height: 42px;
      background: rgba(255, 255, 255, 0.07);
      border: 1px solid rgba(255, 255, 255, 0.14);
      border-radius: 12px;
      padding: 0 8px 0 14px;
      transition: border-color 0.25s, box-shadow 0.25s;
    }
    .header-search:focus-within {
      border-color: rgba(0, 212, 255, 0.6);
      box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
    }
    .search-icon {
      display: inline-flex;
      flex-shrink: 0;
      color: var(--text-muted);
    }
    .search-icon svg {
      width: 18px;
      height: 18px;
    }
    .header-search input {
      flex: 1;
      min-width: 0;
      height: 100%;
      background: transparent;
      color: var(--text-main);
      font-size: 14px;
      padding: 0 12px;
    }
    .header-search input::placeholder {
      color: var(--text-muted);
    }
    .header-search button {
      height: 32px;
      padding: 0 18px;
      border-radius: 8px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      font-size: 13px;
      font-weight: 500;
      transition: box-shadow 0.25s;
      flex-shrink: 0;
    }
    .header-search button:hover {
      box-shadow: var(--glow-primary);
    }

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

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      padding: 8px;
      border-radius: 8px;
    }
    .hamburger span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--text-main);
      border-radius: 2px;
      transition: transform 0.3s, opacity 0.3s;
    }
    .hamburger.active span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }
    .hamburger.active span:nth-child(2) {
      opacity: 0;
    }
    .hamburger.active span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    .category-nav {
      border-top: 1px solid rgba(148, 184, 255, 0.08);
      height: 40px;
      display: flex;
      align-items: center;
    }
    .category-nav .container {
      display: flex;
      align-items: center;
      gap: 32px;
      height: 100%;
      overflow-x: auto;
      scrollbar-width: none;
    }
    .category-nav .container::-webkit-scrollbar {
      display: none;
    }
    .category-nav a {
      position: relative;
      font-size: 14px;
      color: var(--text-secondary);
      padding: 0 2px;
      height: 40px;
      display: inline-flex;
      align-items: center;
      white-space: nowrap;
      transition: color 0.25s;
    }
    .category-nav a:hover {
      color: var(--text-main);
    }
    .category-nav a.active {
      color: var(--accent);
    }
    .category-nav a.active::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
      box-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
    }

    .mobile-menu {
      display: none;
      background: rgba(7, 11, 20, 0.95);
      border-top: 1px solid rgba(148, 184, 255, 0.08);
      padding: 16px 0;
    }
    .mobile-menu .container {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .mobile-menu a {
      padding: 10px 0;
      font-size: 15px;
      border-bottom: 1px solid rgba(148, 184, 255, 0.06);
    }
    .mobile-menu a.active {
      color: var(--accent);
    }
    .mobile-menu .mobile-actions {
      display: flex;
      gap: 12px;
      padding-top: 8px;
    }
    .mobile-menu .mobile-actions .btn {
      flex: 1;
    }

    /* ===== Page Hero ===== */
    .page-hero {
      position: relative;
      padding: 64px 0 40px;
      background: linear-gradient(180deg, rgba(13, 21, 38, 0.4), transparent);
      overflow: hidden;
    }
    .page-hero::before {
      content: '';
      position: absolute;
      top: -40%;
      right: -10%;
      width: 420px;
      height: 420px;
      background: radial-gradient(circle, rgba(0, 212, 255, 0.08), transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }
    .page-hero .container {
      position: relative;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .page-hero h1 {
      font-size: clamp(32px, 4.2vw, 48px);
      font-weight: 700;
      line-height: 1.25;
      color: var(--text-main);
      letter-spacing: 0.02em;
    }
    .page-hero h1 span {
      background: linear-gradient(135deg, var(--accent), var(--success));
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .page-hero .subtitle {
      max-width: 640px;
      font-size: 16px;
      color: var(--text-secondary);
      line-height: 1.8;
    }
    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 4px;
    }
    .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(--text-main);
      font-weight: 500;
      max-width: 200px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    /* ===== Main Layout ===== */
    .main-layout {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 28px;
      padding-top: 32px;
      padding-bottom: 72px;
      align-items: start;
    }

    .content-main {
      display: flex;
      flex-direction: column;
      gap: 36px;
      min-width: 0;
    }

    .cover-banner {
      border-radius: var(--radius-lg);
      overflow: hidden;
      position: relative;
      box-shadow: var(--shadow-glass);
    }
    .cover-banner img {
      width: 100%;
      height: auto;
      object-fit: cover;
      border-radius: 0;
    }
    .cover-banner::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(to bottom, transparent 50%, rgba(7, 11, 20, 0.5));
      pointer-events: none;
    }

    /* ===== Content Blocks ===== */
    .content-block {
      background: rgba(13, 21, 38, 0.66);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-card);
      -webkit-backdrop-filter: blur(16px);
      backdrop-filter: blur(16px);
    }
    .content-block h2 {
      font-size: clamp(20px, 2.6vw, 28px);
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .content-block h2 .block-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 32px;
      height: 32px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      font-size: 16px;
      flex-shrink: 0;
    }
    .content-block p {
      color: var(--text-secondary);
      line-height: 1.9;
      margin-bottom: 12px;
      font-size: 15px;
    }
    .content-block p:last-child {
      margin-bottom: 0;
    }

    /* ===== Stats Bar ===== */
    .stats-bar {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      border-top: 1px solid rgba(148, 184, 255, 0.1);
      border-bottom: 1px solid rgba(148, 184, 255, 0.1);
      padding: 24px 0;
      margin-top: 8px;
    }
    .stat-item {
      text-align: center;
    }
    .stat-item .num {
      font-family: var(--font-num);
      font-size: 32px;
      font-weight: 700;
      color: var(--accent);
      text-shadow: 0 0 16px rgba(0, 212, 255, 0.3);
      line-height: 1.2;
    }
    .stat-item .label {
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 6px;
    }

    /* ===== Steps ===== */
    .steps-grid {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 20px;
    }
    .step-row {
      display: flex;
      gap: 20px;
      padding: 20px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(148, 184, 255, 0.1);
      border-radius: var(--radius-md);
      transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
      position: relative;
      overflow: hidden;
    }
    .step-row::before {
      content: '';
      position: absolute;
      left: 0;
      top: 0;
      bottom: 0;
      width: 3px;
      background: linear-gradient(180deg, var(--primary), var(--accent));
      opacity: 0;
      transition: opacity 0.3s;
    }
    .step-row:hover {
      border-color: var(--border-hover);
      background: rgba(0, 212, 255, 0.04);
      box-shadow: var(--shadow-card);
    }
    .step-row:hover::before {
      opacity: 1;
    }
    .step-num {
      font-family: var(--font-num);
      font-size: 24px;
      font-weight: 700;
      color: rgba(0, 212, 255, 0.5);
      flex-shrink: 0;
      line-height: 1.4;
      width: 40px;
    }
    .step-content {
      flex: 1;
      min-width: 0;
    }
    .step-content h3 {
      font-size: 17px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .step-content p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
      margin: 0;
    }

    /* ===== Features ===== */
    .features-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 20px;
    }
    .feature-card {
      padding: 24px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(148, 184, 255, 0.1);
      border-radius: var(--radius-md);
      transition: all 0.3s ease;
    }
    .feature-card:hover {
      border-color: rgba(0, 212, 255, 0.3);
      box-shadow: var(--shadow-card);
      transform: translateY(-2px);
    }
    .feature-card .feature-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: rgba(46, 107, 255, 0.12);
      border: 1px solid rgba(46, 107, 255, 0.25);
      color: var(--accent);
      font-size: 20px;
      margin-bottom: 12px;
    }
    .feature-card h3 {
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .feature-card p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
      margin: 0;
    }

    /* ===== Sidebar ===== */
    .sidebar {
      display: flex;
      flex-direction: column;
      gap: 24px;
      position: sticky;
      top: calc(var(--header-h) + 64px);
    }
    .sidebar-card {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
    }
    .info-card {
      background: rgba(13, 21, 38, 0.85);
      border: 1px solid var(--border-glass);
      -webkit-backdrop-filter: blur(16px);
      backdrop-filter: blur(16px);
      padding: 28px;
    }
    .info-card h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 20px;
      padding-bottom: 14px;
      border-bottom: 1px solid rgba(148, 184, 255, 0.12);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .info-card h3 .icon {
      width: 28px;
      height: 28px;
      border-radius: 8px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      color: #fff;
      flex-shrink: 0;
    }
    .info-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .info-list li {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      font-size: 14px;
    }
    .info-list .key {
      color: var(--text-muted);
      flex-shrink: 0;
    }
    .info-list .val {
      color: var(--text-main);
      text-align: right;
      font-weight: 500;
    }

    .img-card {
      border-radius: var(--radius-lg);
      overflow: hidden;
      position: relative;
      min-height: 180px;
      box-shadow: var(--shadow-card);
    }
    .img-card img {
      width: 100%;
      height: 100%;
      min-height: 180px;
      object-fit: cover;
    }
    .img-card::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 40%, rgba(7, 11, 20, 0.7));
      pointer-events: none;
    }

    .cta-card {
      background: linear-gradient(145deg, rgba(46, 107, 255, 0.15), rgba(0, 212, 255, 0.06));
      border: 1px solid rgba(0, 212, 255, 0.2);
      border-radius: var(--radius-lg);
      padding: 28px;
      text-align: center;
      -webkit-backdrop-filter: blur(16px);
      backdrop-filter: blur(16px);
      box-shadow: var(--glow-primary);
    }
    .cta-card h3 {
      font-size: 20px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .cta-card p {
      font-size: 14px;
      color: var(--text-secondary);
      margin-bottom: 20px;
    }
    .cta-card .btn {
      width: 100%;
    }

    /* ===== FAQ ===== */
    .faq-section {
      padding: var(--space-section) 0;
    }
    .faq-section .section-head {
      text-align: center;
      margin-bottom: 48px;
    }
    .section-head h2 {
      font-size: clamp(24px, 3vw, 34px);
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .section-head p {
      font-size: 15px;
      color: var(--text-secondary);
      max-width: 480px;
      margin: 0 auto;
    }
    .faq-list {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: rgba(13, 21, 38, 0.8);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      -webkit-backdrop-filter: blur(16px);
      backdrop-filter: blur(16px);
      overflow: hidden;
      transition: border-color 0.3s;
    }
    .faq-item:hover {
      border-color: var(--border-hover);
    }
    .faq-item.open {
      border-color: rgba(0, 212, 255, 0.35);
    }
    .faq-q {
      width: 100%;
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 16px 20px;
      text-align: left;
      min-height: 52px;
      cursor: pointer;
    }
    .faq-q .q-icon {
      width: 26px;
      height: 26px;
      border-radius: 50%;
      background: rgba(0, 212, 255, 0.12);
      color: var(--accent);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 13px;
      font-weight: 700;
      flex-shrink: 0;
    }
    .faq-q .q-text {
      flex: 1;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      line-height: 1.5;
    }
    .faq-q .q-arrow {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      border: 1px solid rgba(148, 184, 255, 0.25);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      transition: transform 0.3s ease;
      color: var(--text-secondary);
      font-size: 14px;
    }
    .faq-item.open .q-arrow {
      transform: rotate(45deg);
      border-color: var(--accent);
      color: var(--accent);
    }
    .faq-a {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 20px;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
    }
    .faq-item.open .faq-a {
      max-height: 300px;
      padding: 0 20px 18px 60px;
    }

    /* ===== CTA ===== */
    .cta-section {
      position: relative;
      padding: 96px 0;
      text-align: center;
      overflow: hidden;
      background: linear-gradient(180deg, rgba(7, 11, 20, 0.6), rgba(6, 9, 18, 0.9));
    }
    .cta-section::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image: linear-gradient(rgba(148, 184, 255, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(148, 184, 255, 0.03) 1px, transparent 1px);
      background-size: 32px 32px;
      pointer-events: none;
    }
    .cta-section::after {
      content: '';
      position: absolute;
      top: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 560px;
      height: 360px;
      background: radial-gradient(circle, rgba(0, 212, 255, 0.1), transparent 70%);
      pointer-events: none;
    }
    .cta-section .container {
      position: relative;
      z-index: 2;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 16px;
    }
    .cta-section h2 {
      font-size: clamp(24px, 3.4vw, 40px);
      font-weight: 600;
      color: var(--text-main);
      line-height: 1.3;
    }
    .cta-section p {
      font-size: 15px;
      color: var(--text-secondary);
      max-width: 480px;
      margin-bottom: 12px;
    }
    .cta-section .btn {
      min-width: 220px;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--bg-deep);
      border-top: 1px solid rgba(148, 184, 255, 0.08);
    }
    .footer-divider {
      border: none;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.4), transparent);
      margin: 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1.2fr;
      gap: 48px;
      padding: 56px 0 40px;
    }
    .footer-brand .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 14px;
    }
    .footer-brand p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
      max-width: 360px;
    }
    .footer-links h4,
    .footer-contact h4 {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .footer-links ul,
    .footer-contact ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a {
      font-size: 14px;
      color: var(--text-secondary);
    }
    .footer-links a:hover {
      color: var(--accent);
      text-decoration: underline;
      text-underline-offset: 4px;
    }
    .footer-contact ul li {
      font-size: 14px;
      color: var(--text-secondary);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-contact .icon {
      color: var(--accent);
      flex-shrink: 0;
    }
    .footer-bottom {
      border-top: 1px solid rgba(148, 184, 255, 0.06);
      padding: 18px 0;
      text-align: center;
    }
    .footer-bottom p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      :root {
        --space-section: 72px;
      }
      .header-main {
        gap: 16px;
      }
      .header-search {
        flex-basis: 400px;
      }
      .main-layout {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .sidebar {
        position: static;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
      }
      .sidebar .side-section {
        display: contents;
      }
      .cta-card {
        grid-column: span 2;
      }
    }

    @media (max-width: 768px) {
      :root {
        --space-section: 56px;
      }
      .container {
        padding: 0 16px;
      }
      .header-main {
        height: 60px;
        gap: 12px;
      }
      .header-logo {
        width: auto;
      }
      .header-search {
        display: none;
      }
      .header-actions {
        margin-left: auto;
        display: none;
      }
      .hamburger {
        display: inline-flex;
        margin-left: auto;
      }
      .category-nav {
        display: none;
      }
      .mobile-menu {
        display: block;
      }
      .mobile-menu.hidden {
        display: none;
      }
      .page-hero {
        padding: 40px 0 28px;
      }
      .page-hero h1 {
        font-size: 32px;
      }
      .page-hero .subtitle {
        font-size: 15px;
      }
      .content-block {
        padding: 24px;
      }
      .stats-bar {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 8px;
      }
      .stat-item .num {
        font-size: 24px;
      }
      .features-grid {
        grid-template-columns: 1fr;
      }
      .sidebar {
        grid-template-columns: 1fr;
      }
      .cta-card {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
        padding: 40px 0 24px;
      }
      .faq-a {
        padding: 0 20px;
      }
      .faq-item.open .faq-a {
        padding: 0 20px 16px 20px;
      }
    }

    @media (max-width: 520px) {
      .page-hero h1 {
        font-size: 28px;
      }
      .page-hero .subtitle {
        font-size: 14px;
      }
      .content-block {
        padding: 20px;
      }
      .step-row {
        gap: 14px;
        padding: 16px;
      }
      .step-num {
        font-size: 20px;
        width: 30px;
      }
      .stats-bar {
        grid-template-columns: 1fr;
        gap: 14px;
      }
      .stat-item {
        display: flex;
        align-items: baseline;
        justify-content: center;
        gap: 8px;
      }
      .stat-item .num {
        font-size: 26px;
      }
      .stat-item .label {
        margin-top: 0;
      }
      .cta-section {
        padding: 64px 0;
      }
      .cta-section .btn {
        width: 100%;
        max-width: 300px;
      }
    }