/* roulang page: index */
:root {
  --c7-primary: #0F766E;
  --c7-primary-dark: #134E4A;
  --c7-primary-light: #CCFBF1;
  --c7-accent: #F59E0B;
  --c7-accent-hover: #D97706;
  --c7-bg: #FAFAF9;
  --c7-text: #1C1917;
  --c7-sub: #57534E;
  --c7-border: #E7E5E4;
  --c7-dark: #0C0A09;
  --c7-success: #10B981;
  --c7-radius-lg: 16px;
  --c7-radius-md: 12px;
  --c7-radius-sm: 8px;
  --c7-shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --c7-shadow-lg: 0 20px 40px rgba(0,0,0,0.12);
  --c7-transition: 300ms ease;
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--c7-bg);
  color:var(--c7-text);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img { max-width:100%; display:block; }
a { color:inherit; text-decoration:none; }
button { border:none; background:none; cursor:pointer; font:inherit; }
input { font:inherit; }
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
@media (min-width:768px) { .container { padding:0 32px; } }
.section { padding:64px 0; }
@media (min-width:768px) { .section { padding:96px 0; } }
.eyebrow {
  display:inline-block;
  font-size:12px;
  font-weight:600;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--c7-primary);
  background:rgba(15,118,110,0.08);
  padding:4px 12px;
  border-radius:999px;
  margin-bottom:16px;
}

/* ===== 导航 ==== */
.header {
  position:fixed; top:0; left:0; right:0; z-index:50;
  height:64px;
  background:rgba(12,10,9,0.85);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.header-inner {
  height:64px;
  display:flex; align-items:center; justify-content:space-between;
  gap:20px;
}
.logo-mark {
  width:38px; height:38px; border-radius:10px;
  background:linear-gradient(135deg,#0F766E,#134E4A);
  color:#fff; font-weight:800; font-size:14px;
  display:inline-flex; align-items:center; justify-content:center;
  letter-spacing:-0.5px; flex-shrink:0;
}
.logo-text { font-size:18px; font-weight:600; color:#fff; letter-spacing:-0.02em; white-space:nowrap; }
.nav-links { display:none; gap:28px; }
@media (min-width:768px) {
  .nav-links { display:flex; }
}
.nav-link {
  position:relative; color:rgba(245,245,244,0.72);
  font-size:14px; font-weight:500; padding:8px 0;
  transition:color 300ms ease;
}
.nav-link::after {
  content:''; position:absolute; left:0; bottom:2px;
  width:0; height:2px; border-radius:2px;
  background:var(--c7-accent); transition:width 300ms ease;
}
.nav-link:hover { color:#fff; }
.nav-link:hover::after { width:100%; }
.nav-link.active { color:#fff; }
.nav-link.active::after { width:100%; }
.header-actions { display:flex; align-items:center; gap:12px; }
.search-box {
  display:none; align-items:center; gap:8px;
  background:rgba(255,255,255,0.08);
  border:1px solid rgba(255,255,255,0.1);
  border-radius:999px;
  padding:6px 14px;
  color:rgba(245,245,244,0.6);
  font-size:13px;
  transition:border-color 300ms, background 300ms;
}
.search-box input {
  background:transparent; border:none; outline:none;
  color:#fff; font-size:13px; width:110px;
}
.search-box input::placeholder { color:rgba(245,245,244,0.45); }
.search-box kbd {
  font-size:11px; background:rgba(255,255,255,0.1);
  border-radius:4px; padding:2px 6px; color:rgba(245,245,244,0.7);
}
.search-box:focus-within {
  border-color:rgba(245,158,11,0.5);
  background:rgba(255,255,255,0.12);
}
@media (min-width:1024px) { .search-box { display:flex; } }
.btn-accent {
  display:inline-flex; align-items:center; justify-content:center;
  background:var(--c7-accent); color:#1C1917;
  font-size:14px; font-weight:600;
  border-radius:999px; padding:10px 22px;
  transition:background 300ms, transform 100ms;
  white-space:nowrap;
}
.btn-accent:hover { background:var(--c7-accent-hover); }
.btn-accent:active { transform:scale(0.96); }
.btn-ghost {
  display:inline-flex; align-items:center; justify-content:center;
  border:1px solid rgba(255,255,255,0.35); color:#fff;
  font-size:14px; font-weight:500;
  border-radius:999px; padding:10px 22px;
  backdrop-filter:blur(4px);
  transition:background 300ms, border-color 300ms;
}
.btn-ghost:hover { background:rgba(255,255,255,0.1); border-color:rgba(255,255,255,0.5); }
.mobile-menu-btn { display:flex; color:#fff; width:40px; height:40px; align-items:center; justify-content:center; }
@media (min-width:768px) {
  .mobile-menu-btn { display:none; }
}
.mobile-menu {
  position:fixed; top:64px; left:0; right:0; bottom:0; z-index:49;
  background:rgba(12,10,9,0.97);
  backdrop-filter:blur(20px);
  display:none; flex-direction:column; padding:32px 24px;
  padding-bottom:64px; overflow-y:auto;
}
.mobile-menu.open { display:flex; }
.mobile-menu a {
  color:rgba(245,245,244,0.85); font-size:18px; font-weight:500;
  padding:16px 0; border-bottom:1px solid rgba(255,255,255,0.06);
  transition:color 300ms;
}
.mobile-menu a:hover { color:var(--c7-accent); }
.mobile-menu .btn-accent { margin-top:24px; justify-content:center; }

/* ===== Hero ===== */
.hero {
  position:relative; min-height:640px;
  display:flex; align-items:center;
  background-color:var(--c7-dark);
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover; background-position:center;
  padding:120px 0 80px;
  overflow:hidden;
}
.hero::before {
  content:''; position:absolute; inset:0;
  background:linear-gradient(90deg, rgba(12,10,9,0.92) 0%, rgba(12,10,9,0.75) 50%, rgba(12,10,9,0.5) 100%);
}
.hero-content { position:relative; z-index:2; max-width:680px; }
.hero-badge {
  display:inline-flex; align-items:center; gap:8px;
  background:rgba(255,255,255,0.08);
  border:1px solid rgba(255,255,255,0.12);
  color:#F5F5F4; font-size:13px; font-weight:500;
  border-radius:999px; padding:6px 16px; margin-bottom:24px;
  backdrop-filter:blur(8px);
}
.hero-badge-dot {
  width:8px; height:8px; border-radius:50%;
  background:var(--c7-accent);
  animation:pulse-dot 1.6s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%,100% { opacity:1; transform:scale(1); }
  50% { opacity:0.5; transform:scale(0.8); }
}
.hero h1 {
  font-size:36px; line-height:1.15; font-weight:700; color:#fff;
  letter-spacing:-0.03em; margin-bottom:20px;
}
@media (min-width:768px) {
  .hero h1 { font-size:56px; line-height:1.1; }
}
.hero-sub {
  color:rgba(231,229,228,0.8); font-size:16px; line-height:1.75;
  max-width:540px; margin-bottom:32px;
}
.hero-cta { display:flex; flex-wrap:wrap; gap:16px; margin-bottom:48px; }
.countdown-grid { display:flex; gap:12px; flex-wrap:wrap; margin-bottom:56px; }
.countdown-item {
  background:rgba(255,255,255,0.08);
  border:1px solid rgba(255,255,255,0.1);
  border-radius:14px; padding:12px 20px; min-width:80px;
  text-align:center; backdrop-filter:blur(8px);
}
.countdown-num {
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:32px; font-weight:700; color:var(--c7-accent);
  font-variant-numeric:tabular-nums; line-height:1.2;
  display:block;
}
.countdown-label {
  font-size:12px; color:rgba(168,162,158,0.8); margin-top:4px;
}
.hero-trust {
  display:flex; flex-wrap:wrap; gap:24px;
  color:rgba(168,162,158,0.7); font-size:13px;
}
.hero-trust span { display:inline-flex; align-items:center; gap:6px; }

/* ===== 看点列表 ==== */
.highlights { background:var(--c7-bg); }
.highlight-list { display:flex; flex-direction:column; }
.highlight-item {
  display:flex; gap:20px; padding:24px 16px;
  border-radius:12px; transition:background 300ms ease;
  position:relative;
}
.highlight-item::before {
  content:''; position:absolute; left:-8px; top:20px; bottom:20px;
  width:4px; border-radius:4px;
  background:var(--c7-primary);
  opacity:0; transform:scaleY(0.3); transition:opacity 300ms, transform 300ms;
}
.highlight-item:hover { background:rgba(250,250,249,0.8); }
.highlight-item:hover::before { opacity:1; transform:scaleY(1); }
.highlight-num {
  font-size:28px; font-weight:700; color:var(--c7-primary);
  line-height:1.2; min-width:48px; font-family:ui-monospace,monospace;
}
.highlight-body h3 { font-size:16px; font-weight:600; color:var(--c7-text); margin-bottom:6px; }
.highlight-body p { font-size:14px; color:var(--c7-sub); line-height:1.7; max-width:640px; }
.highlight-divider { border-bottom:1px solid var(--c7-border); margin-left:84px; }

/* ===== 订阅 ===== */
.subscribe-wrap {
  background:linear-gradient(120deg,#134E4A 0%,#0F766E 100%);
  border-radius:24px; padding:48px 32px; position:relative; overflow:hidden;
}
@media (min-width:768px) {
  .subscribe-wrap { padding:56px 48px; }
}
.subscribe-wrap::before {
  content:''; position:absolute; right:-80px; top:-80px;
  width:280px; height:280px; border-radius:50%;
  background:rgba(255,255,255,0.04);
}
.subscribe-grid { display:flex; flex-direction:column; gap:32px; }
@media (min-width:900px) {
  .subscribe-grid { flex-direction:row; align-items:center; justify-content:space-between; }
}
.subscribe-text { max-width:480px; }
.subscribe-text h2 { color:#fff; font-size:26px; font-weight:700; margin-bottom:12px; }
@media (min-width:768px) { .subscribe-text h2 { font-size:32px; } }
.subscribe-text p { color:rgba(204,251,241,0.8); font-size:15px; line-height:1.75; }
.subscribe-form { width:100%; max-width:420px; }
.subscribe-form .input-group { display:flex; gap:10px; flex-wrap:wrap; }
.subscribe-form input {
  flex:1; background:#fff; border-radius:12px; padding:13px 18px;
  font-size:14px; color:var(--c7-text); border:1px solid transparent;
  outline:none; transition:box-shadow 300ms, border-color 300ms;
  min-width:200px;
}
.subscribe-form input:focus {
  box-shadow:0 0 0 3px rgba(245,158,11,0.4);
  border-color:var(--c7-accent);
}
.subscribe-form input::placeholder { color:#A8A29E; }
.subscribe-note {
  margin-top:14px; color:rgba(204,251,241,0.6); font-size:12px; line-height:1.6;
}
.subscribe-success {
  display:none; margin-top:12px; padding:12px 16px;
  background:rgba(16,185,129,0.15); border:1px solid rgba(16,185,129,0.4);
  color:#D1FAE5; border-radius:10px; font-size:14px;
}

/* ===== 回放卡片 ===== */
.replay-section { background:#fff; border-top:1px solid var(--c7-border); border-bottom:1px solid var(--c7-border); }
.replay-scroll {
  display:flex; gap:24px; overflow-x:auto;
  padding-bottom:16px; scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.replay-scroll::-webkit-scrollbar { height:6px; }
.replay-scroll::-webkit-scrollbar-thumb { background:#D6D3D1; border-radius:8px; }
.replay-scroll::-webkit-scrollbar-track { background:transparent; }
.replay-card {
  flex:0 0 85%; scroll-snap-align:start;
  background:#fff; border:1px solid var(--c7-border);
  border-radius:var(--c7-radius-lg); overflow:hidden;
  transition:transform 300ms ease, box-shadow 300ms ease;
}
@media (min-width:640px) { .replay-card { flex:0 0 48%; } }
@media (min-width:1024px) { .replay-card { flex:0 0 24%; } }
.replay-card:hover {
  transform:translateY(-4px);
  box-shadow:var(--c7-shadow-lg);
}
.replay-cover { position:relative; aspect-ratio:16/9; overflow:hidden; }
.replay-cover img { width:100%; height:100%; object-fit:cover; transition:transform 500ms ease; }
.replay-card:hover .replay-cover img { transform:scale(1.05); }
.replay-duration {
  position:absolute; top:12px; right:12px;
  background:rgba(0,0,0,0.65); color:#fff;
  font-size:12px; font-weight:500;
  border-radius:6px; padding:4px 10px;
  backdrop-filter:blur(4px);
}
.replay-body { padding:20px; }
.replay-body h3 { font-size:15px; font-weight:600; color:var(--c7-text); line-height:1.5; margin-bottom:10px; }
.replay-meta { display:flex; align-items:center; justify-content:space-between; }
.replay-date { font-size:12px; color:#A8A29E; }
.replay-link {
  font-size:13px; font-weight:500; color:var(--c7-primary);
  display:inline-flex; align-items:center; gap:4px;
  transition:gap 300ms ease;
}
.replay-link:hover { gap:8px; }

/* ===== CMS 资讯 ===== */
.cms-list { display:flex; flex-direction:column; }
.cms-item {
  display:flex; flex-direction:column; gap:8px;
  padding:20px 0; border-bottom:1px solid var(--c7-border);
  transition:background 300ms ease;
}
@media (min-width:768px) {
  .cms-item { flex-direction:row; align-items:center; gap:24px; }
}
.cms-item:hover { background:rgba(250,250,249,0.6); }
.cms-item-content { flex:1; min-width:0; }
.cms-meta { display:flex; align-items:center; gap:10px; margin-bottom:6px; flex-wrap:wrap; }
.cms-badge {
  background:rgba(15,118,110,0.08); color:var(--c7-primary);
  font-size:12px; font-weight:500;
  border-radius:999px; padding:2px 12px;
}
.cms-date { font-size:12px; color:#A8A29E; }
.cms-title {
  font-size:15px; font-weight:600; color:var(--c7-text);
  line-height:1.5; transition:color 300ms ease;
}
.cms-title:hover { color:var(--c7-primary); }
.cms-summary {
  font-size:13px; color:var(--c7-sub); line-height:1.7;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
  margin-top:4px;
}
.cms-link {
  font-size:13px; font-weight:500; color:var(--c7-primary);
  white-space:nowrap; display:inline-flex; align-items:center; gap:4px;
  transition:gap 300ms ease;
}
.cms-link:hover { gap:8px; }
.section-head {
  display:flex; align-items:flex-end; justify-content:space-between;
  gap:20px; margin-bottom:40px;
}
.section-head h2 { font-size:28px; font-weight:700; color:var(--c7-text); letter-spacing:-0.02em; }
@media (min-width:768px) { .section-head h2 { font-size:36px; } }
.section-link {
  font-size:14px; font-weight:500; color:var(--c7-primary);
  display:inline-flex; align-items:center; gap:6px;
  transition:gap 300ms ease; white-space:nowrap;
}
.section-link:hover { gap:10px; }

/* ===== FAQ ===== */
.faq-section { background:#fff; }
.faq-wrap { max-width:760px; margin:0 auto; }
.faq-item { border-bottom:1px solid var(--c7-border); padding:20px 0; }
.faq-item:first-child { border-top:1px solid var(--c7-border); }
.faq-question {
  display:flex; align-items:center; justify-content:space-between;
  width:100%; text-align:left;
  font-size:15px; font-weight:600; color:var(--c7-text);
  padding:8px 0; transition:color 300ms ease;
}
.faq-question:hover { color:var(--c7-primary); }
.faq-icon {
  font-size:24px; font-weight:300; color:#A8A29E;
  transition:transform 300ms ease, color 300ms ease;
  flex-shrink:0; margin-left:16px;
}
.faq-icon.open { transform:rotate(45deg); color:var(--c7-primary); }
.faq-answer {
  display:none; padding:4px 40px 8px 0;
  font-size:14px; color:var(--c7-sub); line-height:1.75;
}

/* ===== CTA ===== */
.cta-section { background:var(--c7-dark); }
.cta-inner { text-align:center; max-width:640px; margin:0 auto; padding:64px 0; }
@media (min-width:768px) { .cta-inner { padding:96px 0; } }
.cta-inner h2 { color:#fff; font-size:28px; font-weight:700; letter-spacing:-0.02em; margin-bottom:16px; }
@media (min-width:768px) { .cta-inner h2 { font-size:40px; } }
.cta-inner p { color:rgba(245,245,244,0.7); font-size:15px; line-height:1.75; margin-bottom:32px; }

/* ===== 页脚 ===== */
.footer { background:var(--c7-dark); border-top:1px solid rgba(255,255,255,0.06); }
.footer-grid {
  display:grid; grid-template-columns:1fr; gap:40px;
  padding:64px 0 48px;
}
@media (min-width:640px) { .footer-grid { grid-template-columns:1fr 1fr; } }
@media (min-width:1024px) { .footer-grid { grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; } }
.footer-brand p { color:rgba(245,245,244,0.6); font-size:13px; line-height:1.75; margin-top:16px; max-width:280px; }
.footer-col h4 { color:#fff; font-size:13px; font-weight:600; letter-spacing:0.06em; margin-bottom:20px; }
.footer-col ul { list-style:none; display:flex; flex-direction:column; gap:12px; }
.footer-col ul a { color:rgba(245,245,244,0.55); font-size:13px; transition:color 300ms ease; }
.footer-col ul a:hover { color:var(--c7-primary-light); }
.footer-contact li { color:rgba(245,245,244,0.55); font-size:13px; }
.footer-bottom {
  border-top:1px solid rgba(255,255,255,0.06);
  padding:24px 0;
  color:rgba(245,245,244,0.4); font-size:12px;
  text-align:center;
}
.footer-bottom .container { display:flex; flex-direction:column; gap:6px; align-items:center; }
@media (min-width:768px) { .footer-bottom .container { flex-direction:row; justify-content:space-between; } }

/* ===== 动画 ===== */
@keyframes countdown-tick {
  0% { transform:scale(1); }
  50% { transform:scale(1.08); }
  100% { transform:scale(1); }
}
.tick { animation:countdown-tick 300ms ease-out; }

/* ===== 辅助 ===== */
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border-width:0; }
.focus-ring:focus-visible { outline:2px solid var(--c7-accent); outline-offset:2px; border-radius:4px; }

/* roulang page: category1 */
:root {
            --c7-primary: #0F766E;
            --c7-primary-dark: #134E4A;
            --c7-primary-light: #CCFBF1;
            --c7-accent: #F59E0B;
            --c7-accent-hover: #D97706;
            --c7-bg: #FAFAF9;
            --c7-dark: #0C0A09;
            --c7-text: #1C1917;
            --c7-muted: #57534E;
            --c7-border: #E7E5E4;
            --c7-success: #10B981;
            --radius-card: 16px;
            --radius-btn: 8px;
            --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.12);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--c7-bg);
            color: var(--c7-text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        button,
        input {
            font: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }
        .focus-ring {
            outline: none;
        }
        .focus-ring:focus-visible {
            outline: 2px solid var(--c7-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            height: 64px;
            background: rgba(12, 10, 9, 0.82);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 16px;
        }
        .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--c7-primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }
        .logo-text {
            color: #F5F5F4;
            font-weight: 600;
            font-size: 18px;
            letter-spacing: -0.01em;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-link {
            position: relative;
            font-size: 14px;
            color: #A8A29E;
            font-weight: 500;
            padding: 6px 0;
            letter-spacing: 0.02em;
            transition: color 0.2s ease;
            white-space: nowrap;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--c7-accent);
            transition: width 0.25s ease;
        }
        .nav-link:hover {
            color: #F5F5F4;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }
        .nav-link.active {
            color: #F5F5F4;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 9999px;
            padding: 6px 14px;
            color: #A8A29E;
            font-size: 13px;
            cursor: pointer;
            transition: border-color 0.2s, background 0.2s;
        }
        .nav-search:hover {
            border-color: rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.12);
        }
        .nav-search svg {
            width: 15px;
            height: 15px;
        }
        .nav-search .kbd {
            background: rgba(255, 255, 255, 0.12);
            border-radius: 4px;
            padding: 1px 6px;
            font-size: 11px;
            font-family: ui-monospace, monospace;
        }
        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 10px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            cursor: pointer;
        }
        .menu-toggle span {
            width: 18px;
            height: 2px;
            background: #F5F5F4;
            border-radius: 2px;
            transition: transform 0.25s ease, opacity 0.25s ease;
        }
        .menu-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .menu-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 49;
            background: rgba(12, 10, 9, 0.98);
            padding: 32px 24px;
            flex-direction: column;
            gap: 4px;
            overflow-y: auto;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-nav-link {
            display: block;
            padding: 14px 8px;
            font-size: 17px;
            font-weight: 500;
            color: #A8A29E;
            border-radius: 10px;
            transition: color 0.2s, background 0.2s;
        }
        .mobile-nav-link:hover,
        .mobile-nav-link.active {
            color: #F5F5F4;
            background: rgba(255, 255, 255, 0.05);
        }
        .mobile-nav-link.active {
            border-left: 3px solid var(--c7-accent);
            padding-left: 14px;
        }

        /* buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            padding: 10px 20px;
            border: none;
            cursor: pointer;
            transition: background 0.2s ease, border-color 0.2s ease, transform 0.1s ease, box-shadow 0.3s ease, opacity 0.2s ease;
            line-height: 1.4;
        }
        .btn:active {
            transform: scale(0.97);
        }
        .btn-accent {
            background: var(--c7-accent);
            color: #1C1917;
        }
        .btn-accent:hover {
            background: var(--c7-accent-hover);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
        }
        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: #F5F5F4;
        }
        .btn-ghost:hover {
            border-color: #F5F5F4;
            background: rgba(255, 255, 255, 0.08);
        }
        .btn-primary {
            background: var(--c7-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--c7-primary-dark);
        }
        .btn-lg {
            padding: 14px 28px;
            font-size: 15px;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        .btn-block {
            width: 100%;
        }

        /* hero */
        .hero {
            background: var(--c7-dark);
            position: relative;
            overflow: hidden;
            padding: 140px 0 100px;
            color: #F5F5F4;
            margin-top: 64px;
        }
        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.35;
        }
        .hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(12, 10, 9, 0.96) 15%, rgba(12, 10, 9, 0.7) 45%, rgba(12, 10, 9, 0.3) 75%, rgba(12, 10, 9, 0.1));
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.14em;
            text-transform: uppercase;
            color: #99F6E4;
            background: rgba(15, 118, 110, 0.2);
            border: 1px solid rgba(153, 246, 228, 0.18);
            border-radius: 9999px;
            padding: 6px 16px;
        }
        .hero-stat {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            margin-top: 48px;
        }
        .hero-stat .num {
            font-family: ui-monospace, 'SF Mono', monospace;
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.02em;
        }

        /* section titles */
        .section {
            padding: 88px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--c7-primary);
            background: var(--c7-primary-light);
            border-radius: 9999px;
            padding: 5px 14px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-top: 18px;
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--c7-muted);
            max-width: 640px;
            line-height: 1.8;
        }
        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }
            .section-title {
                font-size: 26px;
            }
        }

        /* feature cards */
        .feature-card {
            background: #fff;
            border: 1px solid var(--c7-border);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: box-shadow 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: #D6D3D1;
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--c7-primary-light);
            color: var(--c7-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
        }
        .feature-icon svg {
            width: 22px;
            height: 22px;
        }
        .feature-card h3 {
            font-size: 17px;
            font-weight: 600;
            letter-spacing: -0.01em;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--c7-muted);
            line-height: 1.7;
        }

        /* stats strip */
        .stats-strip {
            background: linear-gradient(135deg, #134E4A 0%, #0F766E 60%, #0D9488 100%);
            border-radius: 24px;
            padding: 48px 40px;
            color: #fff;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }
        .stats-strip .num {
            font-family: ui-monospace, 'SF Mono', monospace;
            font-size: 36px;
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .stats-strip .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }
        @media (max-width: 768px) {
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
                padding: 36px 24px;
            }
            .stats-strip .num {
                font-size: 28px;
            }
        }

        /* scene cards */
        .scene-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .scene-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--c7-border);
            background: #fff;
            transition: box-shadow 0.3s ease, transform 0.3s ease;
            min-height: 320px;
        }
        .scene-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .scene-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .scene-card .scene-body {
            padding: 24px;
        }
        .scene-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .scene-card p {
            font-size: 14px;
            color: var(--c7-muted);
            line-height: 1.7;
        }
        .scene-feature {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--c7-primary);
            margin-top: 14px;
            font-weight: 600;
        }
        .scene-feature svg {
            width: 16px;
            height: 16px;
        }
        .scene-span {
            grid-column: span 1;
        }
        @media (max-width: 768px) {
            .scene-grid {
                grid-template-columns: 1fr;
            }
        }

        /* process */
        .process-step {
            position: relative;
            text-align: center;
            padding: 0 8px;
        }
        .process-step .step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--c7-primary);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            position: relative;
            z-index: 2;
            border: 3px solid #fff;
            box-shadow: 0 0 0 2px var(--c7-primary);
        }
        .process-step h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 13px;
            color: var(--c7-muted);
            line-height: 1.6;
        }
        .process-line {
            position: absolute;
            top: 20px;
            left: calc(50% + 30px);
            right: calc(-50% + 30px);
            height: 2px;
            background: #E7E5E4;
            z-index: 1;
        }
        @media (max-width: 768px) {
            .process-line {
                display: none;
            }
        }

        /* faq */
        .faq-item {
            border-bottom: 1px solid var(--c7-border);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 0;
            cursor: pointer;
            font-weight: 500;
            font-size: 15px;
            color: var(--c7-text);
            list-style: none;
            transition: color 0.2s ease;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--c7-primary);
        }
        .faq-icon {
            width: 22px;
            height: 22px;
            flex-shrink: 0;
            transition: transform 0.3s ease;
            color: var(--c7-primary);
        }
        .faq-item[open] .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding-bottom: 22px;
            color: var(--c7-muted);
            font-size: 14px;
            line-height: 1.75;
            max-width: 780px;
        }

        /* cta */
        .cta-block {
            background: linear-gradient(135deg, #0C0A09, #134E4A);
            border-radius: 24px;
            padding: 64px 48px;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.12;
        }
        .cta-block .container-inner {
            position: relative;
            z-index: 2;
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
        }
        .subscribe-form input {
            flex: 1;
            min-width: 0;
            background: #fff;
            border: 1px solid transparent;
            border-radius: 10px;
            padding: 13px 18px;
            font-size: 14px;
            color: var(--c7-text);
            transition: ring 0.2s ease, border-color 0.2s ease;
        }
        .subscribe-form input:focus {
            outline: none;
            border-color: var(--c7-accent);
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.25);
        }
        .subscribe-form input::placeholder {
            color: #A8A29E;
        }
        @media (max-width: 640px) {
            .subscribe-form {
                flex-direction: column;
            }
            .cta-block {
                padding: 48px 24px;
            }
        }

        /* footer */
        .footer {
            background: var(--c7-dark);
            color: #A8A29E;
            padding-top: 72px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 56px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-top: 16px;
            max-width: 280px;
            color: #A8A29E;
        }
        .footer-col h4 {
            color: #F5F5F4;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: #A8A29E;
            transition: color 0.2s ease;
        }
        .footer-col ul li a:hover {
            color: #5EEAD4;
        }
        .footer-contact li {
            font-size: 14px;
            line-height: 1.6;
        }
        .footer-bottom {
            border-top: 1px solid #1C1917;
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: #78716C;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* responsive */
        @media (max-width: 1024px) {
            .nav-links {
                display: none;
            }
            .header-actions {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
        }
        @media (max-width: 768px) {
            .hero {
                padding: 110px 0 64px;
            }
            .hero h1 {
                font-size: 38px;
            }
        }

/* roulang page: article */
:root {
  --c7-primary: #0F766E;
  --c7-primary-dark: #134E4A;
  --c7-primary-light: #CCFBF1;
  --c7-accent: #F59E0B;
  --c7-accent-dark: #D97706;
  --c7-bg: #FAFAF9;
  --c7-dark: #0C0A09;
  --c7-ink: #1C1917;
  --c7-muted: #57534E;
  --c7-line: #E7E5E4;
  --c7-on-dark: #F5F5F4;
  --c7-success: #10B981;
  --c7-disabled: #A8A29E;
  --radius-lg: 16px;
  --radius-md: 8px;
  --shadow-sm: 0 1px 2px rgba(12,10,9,0.06);
  --shadow-lg: 0 20px 25px -5px rgba(12,10,9,0.12), 0 10px 10px -5px rgba(12,10,9,0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--c7-bg);
  color: var(--c7-ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

:focus-visible {
  outline: 2px solid var(--c7-accent);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 16px;
  padding-right: 16px;
}

@media (min-width: 768px) {
  .container {
    padding-left: 32px;
    padding-right: 32px;
  }
}

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 64px;
  background: rgba(12, 10, 9, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-inner {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.logo-mark {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c7-primary);
  color: #fff;
  font-weight: 800;
  font-size: 15px;
  border-radius: 10px;
  letter-spacing: -0.02em;
}

.logo-text {
  color: var(--c7-on-dark);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 2px;
}

.nav-link {
  position: relative;
  color: rgba(250, 250, 249, 0.72);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  transition: color 0.2s;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 1px;
  height: 2px;
  border-radius: 2px;
  background: var(--c7-accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

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

.search-box {
  position: relative;
  display: none;
  align-items: center;
}

.search-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 13px;
  color: rgba(250, 250, 249, 0.5);
  transition: border-color 0.2s, background 0.2s;
}

.search-trigger:hover {
  border-color: rgba(245, 158, 11, 0.5);
  background: rgba(255, 255, 255, 0.1);
}

.search-trigger svg {
  width: 15px;
  height: 15px;
}

kbd {
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 11px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 4px;
  padding: 1px 5px;
  color: rgba(250, 250, 249, 0.6);
}

.search-panel {
  display: none;
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  width: 320px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.18);
  padding: 8px;
  z-index: 80;
}

.search-panel.open {
  display: block;
  animation: panel-in 0.2s ease;
}

.search-panel-title {
  font-size: 12px;
  color: #a8a29e;
  padding: 10px 12px 6px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.search-panel-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: 10px;
  font-size: 14px;
  color: var(--c7-ink);
  transition: background 0.15s;
}

.search-panel-item:hover {
  background: #f5f5f4;
}

.search-panel-key {
  font-family: ui-monospace, monospace;
  font-size: 11px;
  color: #a8a29e;
  border: 1px solid #e7e5e4;
  border-radius: 4px;
  padding: 1px 5px;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--c7-accent);
  color: var(--c7-dark);
  font-size: 14px;
  font-weight: 600;
  border-radius: 999px;
  padding: 9px 20px;
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
  transition: background 0.2s, transform 0.1s, box-shadow 0.2s;
  white-space: nowrap;
}

.btn-cta:hover {
  background: var(--c7-accent-dark);
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
}

.btn-cta:active {
  transform: scale(0.97);
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  transition: background 0.2s;
}

.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.06);
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--c7-on-dark);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.menu-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.open span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-drawer {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99;
  background: var(--c7-dark);
  padding: 32px 24px;
  overflow-y: auto;
}

.nav-drawer.open {
  display: block;
  animation: fade-in 0.2s ease;
}

.drawer-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.drawer-link {
  color: var(--c7-on-dark);
  font-size: 18px;
  font-weight: 600;
  padding: 14px 8px;
  border-radius: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background 0.2s, color 0.2s;
}

.drawer-link:hover {
  background: rgba(255, 255, 255, 0.04);
  color: #66e3da;
}

.drawer-link.active {
  color: #66e3da;
}

.drawer-cta {
  margin-top: 24px;
  width: 100%;
  justify-content: center;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }

  .search-box {
    display: flex;
  }

  .menu-toggle {
    display: none;
  }

  .nav-drawer {
    display: none !important;
  }
}

/* ===== 文章页头 ===== */
.article-hero {
  position: relative;
  padding: 120px 0 56px;
  background: var(--c7-dark) url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
}

.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(12, 10, 9, 0.94) 0%, rgba(12, 10, 9, 0.86) 45%, rgba(15, 118, 110, 0.35) 100%);
}

.article-hero .container {
  position: relative;
  z-index: 1;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(245, 245, 244, 0.6);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: rgba(245, 245, 244, 0.85);
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: var(--c7-accent);
}

.breadcrumb-sep {
  opacity: 0.4;
}

.breadcrumb-current {
  color: rgba(245, 245, 244, 0.9);
  max-width: 300px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.article-hero h1 {
  color: #fff;
  font-size: 30px;
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.02em;
  max-width: 780px;
  margin-bottom: 24px;
}

@media (min-width: 768px) {
  .article-hero h1 {
    font-size: 42px;
    line-height: 1.14;
  }
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 18px;
  font-size: 13px;
  color: rgba(245, 245, 244, 0.65);
  padding-top: 20px;
  border-top: 1px solid rgba(245, 245, 244, 0.12);
}

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

.meta-item svg {
  width: 14px;
  height: 14px;
  opacity: 0.6;
}

.badge-category {
  display: inline-flex;
  align-items: center;
  background: rgba(15, 118, 110, 0.3);
  color: #ccfbf1;
  border: 1px solid rgba(15, 118, 110, 0.5);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 999px;
  letter-spacing: 0.02em;
}

/* ===== 正文区 ===== */
.article-section {
  padding: 48px 0;
}

@media (min-width: 768px) {
  .article-section {
    padding: 64px 0;
  }
}

.article-content {
  max-width: 760px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.8;
  color: var(--c7-ink);
}

.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.35;
  margin-top: 44px;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.article-content h3 {
  font-size: 19px;
  font-weight: 600;
  line-height: 1.4;
  margin-top: 32px;
  margin-bottom: 12px;
}

.article-content p {
  margin-bottom: 24px;
}

.article-content ul,
.article-content ol {
  margin: 24px 0;
  padding-left: 24px;
}

.article-content li {
  margin-bottom: 10px;
}

.article-content a {
  color: var(--c7-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: rgba(15, 118, 110, 0.3);
  transition: text-decoration-color 0.2s;
}

.article-content a:hover {
  text-decoration-color: var(--c7-primary);
}

.article-content blockquote {
  border-left: 4px solid var(--c7-primary);
  background: #f0fdfa;
  padding: 18px 22px;
  border-radius: 0 14px 14px 0;
  color: var(--c7-muted);
  margin: 28px 0;
  font-size: 15px;
}

.article-content img {
  border-radius: 16px;
  max-width: 100%;
  height: auto;
  margin: 32px 0;
}

.article-content code {
  background: #f5f5f4;
  border-radius: 4px;
  padding: 2px 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em;
  color: #134e4a;
}

.article-content pre {
  background: var(--c7-dark);
  color: #f5f5f4;
  border-radius: 14px;
  padding: 20px 24px;
  overflow-x: auto;
  margin: 28px 0;
  font-size: 14px;
  line-height: 1.7;
}

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

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14px;
}

.article-content th,
.article-content td {
  border: 1px solid var(--c7-line);
  padding: 10px 14px;
  text-align: left;
}

.article-content th {
  background: #f5f5f4;
  font-weight: 600;
}

/* ===== 无文章态 ===== */
.article-empty {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  padding: 72px 24px;
  background: #fff;
  border-radius: 16px;
  border: 1px dashed #d6d3d1;
}

.empty-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  border-radius: 16px;
  background: #f0fdfa;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--c7-primary);
}

.article-empty h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--c7-ink);
}

.article-empty p {
  font-size: 15px;
  color: var(--c7-muted);
  margin-bottom: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 10px;
  padding: 10px 22px;
  transition: background 0.2s, color 0.2s, transform 0.1s, box-shadow 0.2s;
}

.btn-primary {
  background: var(--c7-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(15, 118, 110, 0.3);
}

.btn-primary:hover {
  background: var(--c7-primary-dark);
  box-shadow: 0 4px 14px rgba(15, 118, 110, 0.4);
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-outline {
  background: transparent;
  color: var(--c7-ink);
  border: 1px solid var(--c7-line);
}

.btn-outline:hover {
  border-color: var(--c7-primary);
  color: var(--c7-primary);
  background: #f0fdfa;
}

/* ===== 相关推荐 ===== */
.related-section {
  padding: 56px 0;
  background: #fff;
  border-top: 1px solid var(--c7-line);
}

@media (min-width: 768px) {
  .related-section {
    padding: 72px 0;
  }
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}

.section-eyebrow {
  font-size: 12px;
  font-weight: 600;
  color: var(--c7-primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 6px;
  display: block;
}

.section-head h2 {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--c7-ink);
}

@media (min-width: 768px) {
  .section-head h2 {
    font-size: 30px;
  }
}

.related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 768px) {
  .related-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

.related-card {
  background: #fff;
  border: 1px solid var(--c7-line);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.3s, transform 0.3s, border-color 0.3s;
}

.related-card:hover {
  box-shadow: 0 20px 25px -5px rgba(12, 10, 9, 0.1);
  transform: translateY(-4px);
  border-color: #d6d3d1;
}

.related-cover {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #e7e5e4;
  position: relative;
}

.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.related-body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.related-body h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 8px;
  color: var(--c7-ink);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s;
}

.related-card:hover .related-body h3 {
  color: var(--c7-primary);
}

.related-body p {
  font-size: 13px;
  color: var(--c7-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}

.related-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--c7-primary);
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.related-link svg {
  width: 14px;
  height: 14px;
  transition: transform 0.2s;
}

.related-card:hover .related-link svg {
  transform: translateX(4px);
}

/* ===== 返回入口 ===== */
.article-pager {
  padding: 40px 0 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.pager-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--c7-primary);
  padding: 10px 18px;
  border: 1px solid var(--c7-line);
  border-radius: 10px;
  background: #fff;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.pager-link:hover {
  border-color: var(--c7-primary);
  background: #f0fdfa;
  transform: translateY(-1px);
}

.pager-next {
  margin-left: auto;
}

/* ===== CTA 区块 ===== */
.cta-section {
  background: var(--c7-dark);
  padding: 64px 0 72px;
}

.cta-inner {
  display: flex;
  flex-direction: column;
  gap: 28px;
  align-items: flex-start;
}

@media (min-width: 1024px) {
  .cta-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.cta-copy {
  max-width: 560px;
}

.cta-copy h2 {
  color: #fff;
  font-size: 26px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

@media (min-width: 768px) {
  .cta-copy h2 {
    font-size: 32px;
  }
}

.cta-copy p {
  color: rgba(245, 245, 244, 0.65);
  font-size: 15px;
  line-height: 1.7;
}

.cta-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  max-width: 420px;
}

@media (min-width: 520px) {
  .cta-form {
    flex-direction: row;
  }
}

.cta-form input {
  flex: 1;
  min-width: 0;
  background: #fff;
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--c7-ink);
  border: 1px solid transparent;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.cta-form input::placeholder {
  color: #a8a29e;
}

.cta-form input:focus {
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.28);
  border-color: var(--c7-accent);
}

.cta-form input.input-error {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.cta-form .btn {
  padding: 12px 24px;
  font-size: 14px;
  white-space: nowrap;
}

.btn-accent {
  background: var(--c7-accent);
  color: var(--c7-dark);
  font-weight: 600;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
  transition: background 0.2s, transform 0.1s, box-shadow 0.2s;
}

.btn-accent:hover {
  background: var(--c7-accent-dark);
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
}

.btn-accent:active {
  transform: scale(0.97);
}

.btn-accent.btn-success {
  background: var(--c7-success);
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.cta-note {
  font-size: 12px;
  color: rgba(245, 245, 244, 0.4);
  margin-top: 12px;
}

/* ===== 页脚 ===== */
.footer {
  background: var(--c7-dark);
  color: #a8a29e;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  gap: 40px;
  padding: 64px 0 48px;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
  }
}

.footer-brand p {
  margin-top: 16px;
  color: #a8a29e;
  font-size: 14px;
  line-height: 1.7;
  max-width: 300px;
}

.footer-col h4 {
  color: #f5f5f4;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  color: #a8a29e;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: #66e3da;
}

.footer-contact {
  line-height: 1.7;
}

.footer-bottom {
  border-top: 1px solid #292524;
  padding: 24px 0;
}

.footer-bottom .container {
  display: flex;
  flex-direction: column;
  gap: 6px;
  justify-content: space-between;
}

@media (min-width: 768px) {
  .footer-bottom .container {
    flex-direction: row;
    align-items: center;
  }
}

/* ===== 动画 ===== */
@keyframes panel-in {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* roulang page: category2 */
:root {
      --c7-primary: #0F766E;
      --c7-primary-dark: #134E4A;
      --c7-primary-light: #CCFBF1;
      --c7-accent: #F59E0B;
      --c7-accent-hover: #D97706;
      --c7-bg: #FAFAF9;
      --c7-dark: #0C0A09;
      --c7-text: #1C1917;
      --c7-text-secondary: #57534E;
      --c7-border: #E7E5E4;
      --c7-success: #10B981;
      --c7-disabled: #A8A29E;
      --c7-cream: #F5F5F4;
      --radius-md: 8px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
      --shadow-lg: 0 10px 30px rgba(0,0,0,0.1);
      --transition-base: 300ms ease;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--c7-bg);
      color: var(--c7-text);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    input {
      font-family: inherit;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    @media (min-width: 768px) {
      .container {
        padding-left: 2rem;
        padding-right: 2rem;
      }
    }

    .focus-ring:focus-visible {
      outline: 3px solid rgba(15, 118, 110, 0.35);
      outline-offset: 2px;
      border-radius: var(--radius-md);
    }

    /* ===== Header ===== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 100;
      background: rgba(12, 10, 9, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      height: 64px;
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 64px;
      gap: 1rem;
    }

    .logo-area {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      flex-shrink: 0;
    }

    .logo-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, #0F766E, #14B8A6);
      color: #fff;
      font-weight: 700;
      font-size: 15px;
      border-radius: 10px;
      letter-spacing: -0.02em;
      box-shadow: 0 2px 8px rgba(15, 118, 110, 0.35);
    }

    .logo-text {
      font-size: 18px;
      font-weight: 600;
      color: #F5F5F4;
      letter-spacing: -0.01em;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 2rem;
    }

    .nav-link {
      position: relative;
      font-size: 14px;
      font-weight: 500;
      color: #D6D3D1;
      padding: 4px 2px;
      transition: color var(--transition-base);
      white-space: nowrap;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -4px;
      width: 100%;
      height: 2px;
      background: var(--c7-accent);
      border-radius: 2px;
      transform: scaleX(0);
      transform-origin: left center;
      transition: transform var(--transition-base);
    }

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

    .nav-link:hover::after {
      transform: scaleX(1);
    }

    .nav-link.active {
      color: #fff;
      font-weight: 600;
    }

    .nav-link.active::after {
      transform: scaleX(1);
      background: var(--c7-accent);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 1rem;
      flex-shrink: 0;
    }

    .search-box {
      position: relative;
      display: flex;
      align-items: center;
    }

    .search-trigger {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-full);
      padding: 6px 14px;
      color: #A8A29E;
      font-size: 13px;
      transition: all var(--transition-base);
      cursor: pointer;
    }

    .search-trigger:hover {
      background: rgba(255, 255, 255, 0.12);
      border-color: rgba(255, 255, 255, 0.2);
      color: #E7E5E4;
    }

    .search-trigger kbd {
      font-family: ui-monospace, monospace;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 4px;
      padding: 1px 6px;
      font-size: 11px;
      color: #D6D3D1;
    }

    .btn-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--c7-accent);
      color: #1C1917;
      font-weight: 600;
      font-size: 14px;
      padding: 8px 20px;
      border-radius: var(--radius-full);
      border: none;
      transition: all 200ms ease;
      box-shadow: 0 2px 8px rgba(245, 158, 11, 0.25);
    }

    .btn-cta:hover {
      background: var(--c7-accent-hover);
      transform: translateY(-1px);
      box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
    }

    .btn-cta:active {
      transform: scale(0.96);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      width: 40px;
      height: 40px;
      border-radius: var(--radius-md);
      align-items: center;
      justify-content: center;
      color: #F5F5F4;
    }

    .menu-toggle:hover {
      background: rgba(255, 255, 255, 0.08);
    }

    .menu-toggle svg {
      width: 24px;
      height: 24px;
    }

    .mobile-drawer {
      display: none;
      position: fixed;
      top: 64px;
      left: 0;
      right: 0;
      bottom: 0;
      background: var(--c7-dark);
      z-index: 99;
      padding: 2rem 1.5rem;
      flex-direction: column;
      gap: 1rem;
      overflow-y: auto;
    }

    .mobile-drawer.open {
      display: flex;
    }

    .mobile-drawer .nav-link {
      font-size: 18px;
      padding: 12px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      color: #D6D3D1;
    }

    .mobile-drawer .nav-link.active {
      color: var(--c7-accent);
    }

    .mobile-drawer .btn-cta {
      margin-top: 1rem;
      width: 100%;
    }

    /* ===== Hero ===== */
    .page-hero {
      position: relative;
      padding-top: 140px;
      padding-bottom: 80px;
      background-color: #0C0A09;
      background-image: linear-gradient(rgba(12, 10, 9, 0.82), rgba(12, 10, 9, 0.92)), url('/assets/images/backpic/back-2.webp');
      background-size: cover;
      background-position: center;
      color: #F5F5F4;
      overflow: hidden;
    }

    .page-hero::after {
      content: '';
      position: absolute;
      bottom: -60px;
      right: -80px;
      width: 360px;
      height: 360px;
      background: radial-gradient(circle, rgba(15, 118, 110, 0.25), transparent 70%);
      pointer-events: none;
    }

    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 860px;
    }

    .hero-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(15, 118, 110, 0.25);
      border: 1px solid rgba(15, 118, 110, 0.4);
      color: #5EEAD4;
      font-size: 13px;
      font-weight: 600;
      padding: 6px 16px;
      border-radius: var(--radius-full);
      margin-bottom: 24px;
      letter-spacing: 0.02em;
    }

    .hero-title {
      font-size: 2.5rem;
      font-weight: 700;
      line-height: 1.15;
      letter-spacing: -0.02em;
      color: #fff;
      margin-bottom: 20px;
    }

    @media (min-width: 768px) {
      .hero-title {
        font-size: 3.5rem;
      }
    }

    .hero-title .highlight {
      color: var(--c7-accent);
    }

    .hero-subtitle {
      font-size: 1.05rem;
      color: #D6D3D1;
      line-height: 1.75;
      max-width: 700px;
      margin-bottom: 2rem;
    }

    .hero-stats {
      display: flex;
      flex-wrap: wrap;
      gap: 2rem;
      margin-top: 2.5rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 1.5rem;
    }

    .stat-item {
      display: flex;
      flex-direction: column;
    }

    .stat-number {
      font-family: ui-monospace, 'SF Mono', monospace;
      font-size: 22px;
      font-weight: 700;
      color: #F5F5F4;
      letter-spacing: -0.01em;
      line-height: 1.2;
    }

    .stat-label {
      font-size: 13px;
      color: #A8A29E;
      margin-top: 4px;
    }

    /* ===== Section common ===== */
    .section-block {
      padding: 4rem 0;
    }

    @media (min-width: 768px) {
      .section-block {
        padding: 6rem 0;
      }
    }

    .section-head {
      margin-bottom: 3rem;
    }

    .section-eyebrow {
      font-size: 13px;
      font-weight: 600;
      color: var(--c7-primary);
      text-transform: uppercase;
      letter-spacing: 0.08em;
      margin-bottom: 12px;
      display: inline-block;
    }

    .section-title {
      font-size: 1.75rem;
      font-weight: 700;
      line-height: 1.25;
      letter-spacing: -0.01em;
      color: var(--c7-text);
      margin-bottom: 12px;
    }

    @media (min-width: 768px) {
      .section-title {
        font-size: 2.25rem;
      }
    }

    .section-desc {
      font-size: 1rem;
      color: var(--c7-text-secondary);
      line-height: 1.75;
      max-width: 720px;
    }

    .section-light {
      background-color: #fff;
      border-top: 1px solid var(--c7-border);
      border-bottom: 1px solid var(--c7-border);
    }

    .section-dark {
      background-color: var(--c7-dark);
      color: #F5F5F4;
    }

    .section-dark .section-title {
      color: #F5F5F4;
    }

    .section-dark .section-desc {
      color: #A8A29E;
    }

    .section-dark .section-eyebrow {
      color: #5EEAD4;
    }

    /* ===== Feature grid ===== */
    .feature-matrix {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1.25rem;
    }

    @media (min-width: 768px) {
      .feature-matrix {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (min-width: 1024px) {
      .feature-matrix {
        grid-template-columns: repeat(3, 1fr);
      }
      .feature-card-featured {
        grid-column: span 2;
      }
    }

    .feature-card {
      position: relative;
      background: #fff;
      border: 1px solid var(--c7-border);
      border-radius: var(--radius-lg);
      padding: 2rem;
      transition: all var(--transition-base);
      overflow: hidden;
    }

    .feature-card:hover {
      box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
      transform: translateY(-4px);
      border-color: rgba(15, 118, 110, 0.25);
    }

    .feature-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: var(--c7-primary);
      opacity: 0;
      transition: opacity var(--transition-base);
    }

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

    .feature-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      background: var(--c7-primary-light);
      color: var(--c7-primary);
      border-radius: 12px;
      margin-bottom: 1rem;
    }

    .feature-icon svg {
      width: 22px;
      height: 22px;
    }

    .feature-card h3 {
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--c7-text);
      margin-bottom: 8px;
      letter-spacing: -0.01em;
    }

    .feature-card p {
      font-size: 0.9rem;
      color: var(--c7-text-secondary);
      line-height: 1.65;
    }

    .feature-card-featured {
      background: linear-gradient(135deg, #F0FDFA, #FFFFFF);
      border-color: rgba(15, 118, 110, 0.2);
    }

    /* ===== Workflow ===== */
    .workflow-section {
      background: var(--c7-bg);
    }

    .workflow-steps {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2rem;
      counter-reset: step;
    }

    @media (min-width: 768px) {
      .workflow-steps {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
      }
    }

    .workflow-step {
      position: relative;
      padding: 1.75rem;
      background: #fff;
      border: 1px solid var(--c7-border);
      border-radius: var(--radius-lg);
      transition: all var(--transition-base);
    }

    .workflow-step:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }

    .workflow-step::before {
      counter-increment: step;
      content: counter(step) counter(step);
      font-family: ui-monospace, monospace;
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--c7-primary-light);
      display: block;
      margin-bottom: 1rem;
      line-height: 1;
      letter-spacing: -0.02em;
    }

    .workflow-step h3 {
      font-size: 1rem;
      font-weight: 600;
      color: var(--c7-text);
      margin-bottom: 8px;
    }

    .workflow-step p {
      font-size: 0.9rem;
      color: var(--c7-text-secondary);
      line-height: 1.65;
    }

    .workflow-arrow {
      display: none;
    }

    @media (min-width: 768px) {
      .workflow-step {
        position: relative;
      }
      .workflow-step:not(:last-child)::after {
        content: '→';
        position: absolute;
        top: 50%;
        right: -20px;
        transform: translateY(-50%);
        font-size: 20px;
        color: #D6D3D1;
        z-index: 2;
      }
    }

    /* ===== Card grid ===== */
    .card-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1.5rem;
    }

    @media (min-width: 768px) {
      .card-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (min-width: 1024px) {
      .card-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    .content-card {
      background: #fff;
      border: 1px solid var(--c7-border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: all var(--transition-base);
      display: flex;
      flex-direction: column;
    }

    .content-card:hover {
      box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
      transform: translateY(-4px);
    }

    .content-card .card-thumbnail {
      position: relative;
      aspect-ratio: 16/9;
      overflow: hidden;
      background: #111;
    }

    .content-card .card-thumbnail img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 500ms ease;
    }

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

    .content-card .card-tag {
      position: absolute;
      top: 12px;
      left: 12px;
      background: var(--c7-primary);
      color: #fff;
      font-size: 12px;
      font-weight: 500;
      padding: 4px 10px;
      border-radius: var(--radius-full);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    }

    .content-card .card-body {
      padding: 1.5rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .content-card .card-title {
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--c7-text);
      margin-bottom: 8px;
      line-height: 1.4;
      transition: color var(--transition-base);
    }

    .content-card:hover .card-title {
      color: var(--c7-primary);
    }

    .content-card .card-desc {
      font-size: 0.875rem;
      color: var(--c7-text-secondary);
      line-height: 1.65;
      flex: 1;
    }

    .content-card .card-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13px;
      color: #A8A29E;
      padding-top: 1rem;
      margin-top: 1rem;
      border-top: 1px solid var(--c7-border);
    }

    .card-link {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      color: var(--c7-primary);
      font-weight: 500;
      font-size: 14px;
      transition: gap var(--transition-base);
    }

    .card-link:hover {
      gap: 8px;
    }

    /* ===== Channel list ===== */
    .channel-list {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1rem;
    }

    @media (min-width: 768px) {
      .channel-list {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (min-width: 1024px) {
      .channel-list {
        grid-template-columns: 1fr 1fr 1fr;
      }
    }

    .channel-item {
      display: flex;
      align-items: center;
      gap: 1rem;
      background: #fff;
      border: 1px solid var(--c7-border);
      border-radius: var(--radius-lg);
      padding: 1.25rem;
      transition: all var(--transition-base);
    }

    .channel-item:hover {
      border-color: var(--c7-primary);
      box-shadow: var(--shadow-lg);
    }

    .channel-icon {
      width: 42px;
      height: 42px;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--c7-primary);
      background: var(--c7-primary-light);
      flex-shrink: 0;
    }

    .channel-info h4 {
      font-size: 14px;
      font-weight: 600;
      color: var(--c7-text);
      margin-bottom: 2px;
    }

    .channel-info p {
      font-size: 13px;
      color: var(--c7-text-secondary);
      line-height: 1.4;
    }

    /* ===== Comparison ===== */
    .comparison-wrap {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1.5rem;
    }

    @media (min-width: 1024px) {
      .comparison-wrap {
        grid-template-columns: 1fr 1fr 1fr;
      }
    }

    .compare-card {
      background: #fff;
      border: 1px solid var(--c7-border);
      border-radius: var(--radius-lg);
      padding: 2rem 1.75rem;
      transition: all var(--transition-base);
      position: relative;
    }

    .compare-card.featured {
      border-color: var(--c7-primary);
      box-shadow: 0 8px 24px rgba(15, 118, 110, 0.12);
    }

    .compare-badge {
      display: inline-flex;
      background: var(--c7-primary);
      color: #fff;
      font-size: 12px;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: var(--radius-full);
      margin-bottom: 1rem;
    }

    .compare-card h3 {
      font-size: 1rem;
      font-weight: 600;
      color: var(--c7-text);
      margin-bottom: 0.75rem;
    }

    .compare-list {
      list-style: none;
      margin: 0;
      padding: 0;
      display: flex;
      flex-direction: column;
      gap: 0.6rem;
    }

    .compare-list li {
      display: flex;
      align-items: flex-start;
      gap: 8px;
      font-size: 0.9rem;
      color: var(--c7-text-secondary);
      line-height: 1.5;
    }

    .compare-list li svg {
      width: 16px;
      height: 16px;
      color: var(--c7-success);
      flex-shrink: 0;
      margin-top: 4px;
    }

    .compare-list li.muted {
      color: #A8A29E;
    }

    .compare-list li.muted svg {
      color: #D6D3D1;
    }

    /* ===== CTA ===== */
    .cta-section {
      background: var(--c7-dark);
      padding: 4rem 0;
      text-align: center;
    }

    @media (min-width: 768px) {
      .cta-section {
        padding: 5rem 0;
      }
    }

    .cta-title {
      font-size: 1.75rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
      letter-spacing: -0.01em;
    }

    @media (min-width: 768px) {
      .cta-title {
        font-size: 2rem;
      }
    }

    .cta-desc {
      font-size: 1rem;
      color: #D6D3D1;
      max-width: 620px;
      margin: 0 auto 2rem;
      line-height: 1.7;
    }

    /* ===== FAQ ===== */
    .faq-list {
      max-width: 840px;
      margin: 0 auto;
      border-top: 1px solid var(--c7-border);
    }

    .faq-item {
      border-bottom: 1px solid var(--c7-border);
      padding: 1.25rem 0;
    }

    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      font-size: 1rem;
      font-weight: 500;
      color: var(--c7-text);
      cursor: pointer;
      background: none;
      border: none;
      width: 100%;
      text-align: left;
      padding: 0;
      transition: color var(--transition-base);
    }

    .faq-question:hover {
      color: var(--c7-primary);
    }

    .faq-question .faq-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: #F5F5F4;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 300;
      color: var(--c7-text);
      flex-shrink: 0;
      transition: all 300ms ease;
      border: 1px solid var(--c7-border);
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      background: var(--c7-primary);
      color: #fff;
      border-color: var(--c7-primary);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 300ms ease;
      font-size: 0.9rem;
      color: var(--c7-text-secondary);
      line-height: 1.7;
    }

    .faq-answer-inner {
      padding-top: 12px;
      padding-right: 2rem;
    }

    /* ===== Footer ===== */
    .footer {
      background: var(--c7-dark);
      color: #A8A29E;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2rem;
      padding: 3.5rem 0;
    }

    @media (min-width: 768px) {
      .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 2rem;
      }
    }

    .footer-brand p {
      font-size: 0.9rem;
      line-height: 1.65;
      margin-top: 1rem;
      max-width: 260px;
    }

    .footer-col h4 {
      font-size: 14px;
      font-weight: 600;
      color: #E7E5E4;
      margin-bottom: 1rem;
      letter-spacing: 0.02em;
    }

    .footer-col ul {
      list-style: none;
      margin: 0;
      padding: 0;
      display: flex;
      flex-direction: column;
      gap: 0.6rem;
    }

    .footer-col ul li {
      font-size: 0.875rem;
      line-height: 1.5;
    }

    .footer-col a {
      transition: color var(--transition-base);
      display: inline-block;
    }

    .footer-col a:hover {
      color: var(--c7-primary);
    }

    .footer-contact li {
      color: #A8A29E;
    }

    .footer-bottom {
      border-top: 1px solid #1C1917;
      padding: 1.5rem 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
    }

    .footer-bottom .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
    }

    .footer-bottom span {
      font-size: 0.8rem;
      color: #57534E;
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .nav-links {
        display: none;
      }
      .search-box {
        display: none;
      }
      .menu-toggle {
        display: flex;
      }
      .btn-cta {
        display: none;
      }
      .mobile-drawer .btn-cta {
        display: inline-flex;
      }
      .hero-title {
        font-size: 2.6rem;
      }
    }

    @media (max-width: 640px) {
      .hero-title {
        font-size: 2rem;
        line-height: 1.2;
      }
      .hero-subtitle {
        font-size: 0.95rem;
      }
      .hero-stats {
        gap: 1.25rem;
      }
      .section-block {
        padding: 3rem 0;
      }
      .section-title {
        font-size: 1.5rem;
      }
      .feature-card {
        padding: 1.5rem;
      }
      .footer-bottom .container {
        flex-direction: column;
        text-align: center;
        gap: 0.35rem;
      }
    }

    @media (max-width: 480px) {
      .logo-text {
        font-size: 16px;
      }
      .logo-mark {
        width: 32px;
        height: 32px;
        font-size: 14px;
      }
      .page-hero {
        padding-top: 120px;
        padding-bottom: 60px;
      }
      .hero-title {
        font-size: 1.8rem;
      }
    }

    /* Digital count pulse */
    @keyframes pulse-dot {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(0.85); }
    }

    .pulse-dot {
      animation: pulse-dot 1.5s ease-in-out infinite;
    }

/* roulang page: category3 */
:root {
      --c7-primary: #0F766E;
      --c7-primary-dark: #134E4A;
      --c7-primary-light: #CCFBF1;
      --c7-accent: #F59E0B;
      --c7-accent-hover: #D97706;
      --c7-bg: #FAFAF9;
      --c7-text: #1C1917;
      --c7-text-secondary: #57534E;
      --c7-border: #E7E5E4;
      --c7-success: #10B981;
      --c7-dark: #0C0A09;
      --c7-radius: 16px;
      --c7-shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --c7-shadow-lg: 0 20px 40px rgba(0,0,0,0.08);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      background: var(--c7-bg);
      color: var(--c7-text);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* ========== Header / Nav ========== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 100;
      height: 64px;
      background: rgba(12, 10, 9, 0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 64px;
      gap: 1rem;
    }

    .logo-mark {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: var(--c7-primary);
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 15px;
      letter-spacing: -0.02em;
      flex-shrink: 0;
    }

    .logo-text {
      font-size: 18px;
      font-weight: 600;
      color: #F5F5F4;
      white-space: nowrap;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 2rem;
    }

    .nav-link {
      font-size: 14px;
      color: #A8A29E;
      padding: 8px 2px;
      position: relative;
      transition: color 0.25s ease;
      white-space: nowrap;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--c7-accent);
      transform: scaleX(0);
      transform-origin: left center;
      transition: transform 0.3s ease;
      border-radius: 2px;
    }

    .nav-link:hover {
      color: #F5F5F4;
    }

    .nav-link.active {
      color: #F5F5F4;
    }

    .nav-link.active::after,
    .nav-link:hover::after {
      transform: scaleX(1);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }

    .command-search {
      position: relative;
    }

    .command-search-btn {
      display: flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 10px;
      padding: 7px 14px;
      color: #A8A29E;
      font-size: 13px;
      transition: border-color 0.2s, background 0.2s;
      min-width: 180px;
    }

    .command-search-btn:hover {
      border-color: rgba(255, 255, 255, 0.25);
      background: rgba(255, 255, 255, 0.12);
    }

    .command-search-btn kbd {
      font-family: inherit;
      font-size: 11px;
      background: rgba(255, 255, 255, 0.12);
      border-radius: 4px;
      padding: 2px 6px;
      margin-left: auto;
      color: #D6D3D1;
    }

    .search-dropdown {
      position: absolute;
      top: calc(100% + 8px);
      right: 0;
      width: 320px;
      background: #1C1917;
      border: 1px solid #292524;
      border-radius: 14px;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
      padding: 16px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(8px);
      transition: all 0.25s ease;
    }

    .command-search-btn:focus + .search-dropdown,
    .search-dropdown:hover {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .search-dropdown h4 {
      font-size: 12px;
      color: #78716C;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      margin-bottom: 10px;
    }

    .search-dropdown .search-section {
      padding: 12px 0;
      border-bottom: 1px solid #292524;
    }

    .search-dropdown .search-section:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }

    .search-dropdown .tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .search-dropdown .tag-item {
      font-size: 12px;
      background: rgba(255, 255, 255, 0.06);
      color: #D6D3D1;
      padding: 4px 10px;
      border-radius: 999px;
      transition: background 0.2s;
    }

    .search-dropdown .tag-item:hover {
      background: rgba(15, 118, 110, 0.4);
      color: #fff;
    }

    .search-dropdown .shortcut {
      font-size: 13px;
      color: #A8A29E;
      padding: 6px 0;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .search-dropdown .shortcut kbd {
      font-size: 11px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 4px;
      padding: 2px 6px;
      color: #D6D3D1;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 500;
      padding: 11px 22px;
      border-radius: 10px;
      transition: all 0.25s ease;
      cursor: pointer;
      border: 1px solid transparent;
      white-space: nowrap;
    }

    .btn-accent {
      background: var(--c7-accent);
      color: #0C0A09;
    }

    .btn-accent:hover {
      background: var(--c7-accent-hover);
      transform: translateY(-1px);
      box-shadow: 0 8px 24px rgba(245, 158, 11, 0.25);
    }

    .btn-accent:active {
      transform: scale(0.97);
    }

    .btn-outline-light {
      background: transparent;
      border-color: rgba(255, 255, 255, 0.3);
      color: #F5F5F4;
    }

    .btn-outline-light:hover {
      border-color: #fff;
      background: rgba(255, 255, 255, 0.08);
    }

    .nav-toggle {
      display: none;
      background: none;
      border: none;
      color: #F5F5F4;
      width: 40px;
      height: 40px;
      border-radius: 10px;
      align-items: center;
      justify-content: center;
      transition: background 0.2s;
    }

    .nav-toggle:hover {
      background: rgba(255, 255, 255, 0.1);
    }

    .mobile-drawer {
      display: none;
      position: fixed;
      top: 64px;
      left: 0;
      right: 0;
      background: rgba(12, 10, 9, 0.97);
      backdrop-filter: blur(20px);
      padding: 24px 20px;
      z-index: 99;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      transform: translateY(-16px);
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s ease;
    }

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

    .mobile-drawer a {
      display: block;
      padding: 14px 0;
      font-size: 16px;
      color: #E7E5E4;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .mobile-drawer a.active {
      color: var(--c7-accent);
    }

    .mobile-drawer .btn {
      margin-top: 20px;
      width: 100%;
    }

    /* ========== Hero ========== */
    .hero {
      position: relative;
      padding: 140px 0 80px;
      background: var(--c7-dark);
      overflow: hidden;
    }

    .hero-bg {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.35;
    }

    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(to right, rgba(12, 10, 9, 0.92) 0%, rgba(12, 10, 9, 0.55) 60%, rgba(12, 10, 9, 0.3) 100%);
    }

    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 700px;
    }

    .hero-eyebrow {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--c7-primary-light);
      letter-spacing: 0.08em;
      background: rgba(15, 118, 110, 0.3);
      padding: 6px 14px;
      border-radius: 999px;
      margin-bottom: 24px;
      border: 1px solid rgba(15, 118, 110, 0.4);
    }

    .hero h1 {
      font-size: 44px;
      line-height: 1.12;
      color: #fff;
      font-weight: 700;
      letter-spacing: -0.02em;
      margin-bottom: 20px;
    }

    .hero .subtitle {
      font-size: 16px;
      line-height: 1.75;
      color: #D6D3D1;
      margin-bottom: 36px;
      max-width: 560px;
    }

    .hero-ctas {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .hero-stats {
      display: flex;
      gap: 2.5rem;
      flex-wrap: wrap;
    }

    .hero-stat {
      padding-right: 2rem;
      border-right: 1px solid rgba(255, 255, 255, 0.12);
    }

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

    .hero-stat-value {
      font-size: 28px;
      font-weight: 700;
      color: var(--c7-accent);
      font-family: "SF Mono", "Roboto Mono", monospace;
      letter-spacing: -0.02em;
      line-height: 1.2;
    }

    .hero-stat-label {
      font-size: 13px;
      color: #A8A29E;
      margin-top: 4px;
    }

    /* ========== Sections ========== */
    .section {
      padding: 84px 0;
    }

    .section-alt {
      background: #fff;
    }

    .section-header {
      max-width: 680px;
      margin-bottom: 48px;
    }

    .section-eyebrow {
      display: block;
      font-size: 12px;
      font-weight: 600;
      color: var(--c7-primary);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      margin-bottom: 12px;
    }

    .section h2 {
      font-size: 32px;
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 1.2;
      margin-bottom: 16px;
      color: var(--c7-text);
    }

    .section-subtitle {
      font-size: 15px;
      line-height: 1.7;
      color: var(--c7-text-secondary);
    }

    /* ========== Feature Cards ========== */
    .feature-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 24px;
    }

    .feature-card {
      background: #fff;
      border: 1px solid var(--c7-border);
      border-radius: var(--c7-radius);
      padding: 32px;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .feature-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: var(--c7-primary);
      opacity: 0;
      transition: opacity 0.3s;
    }

    .feature-card:hover {
      box-shadow: var(--c7-shadow-lg);
      transform: translateY(-4px);
      border-color: var(--c7-primary);
    }

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

    .feature-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--c7-primary-light);
      color: var(--c7-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
    }

    .feature-card h3 {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 10px;
      color: var(--c7-text);
    }

    .feature-card p {
      font-size: 14px;
      line-height: 1.7;
      color: var(--c7-text-secondary);
    }

    /* ========== Metrics ========== */
    .metrics-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 20px;
    }

    .metric-card {
      background: var(--c7-bg);
      border: 1px solid var(--c7-border);
      border-radius: 16px;
      padding: 28px 24px;
      transition: all 0.3s ease;
    }

    .metric-card:hover {
      border-color: var(--c7-primary);
      box-shadow: var(--c7-shadow-sm);
    }

    .metric-card-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }

    .metric-icon {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: var(--c7-primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .metric-title {
      font-size: 15px;
      font-weight: 600;
      color: var(--c7-text);
    }

    .metric-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .metric-list li {
      font-size: 13px;
      color: var(--c7-text-secondary);
      padding: 7px 0;
      border-bottom: 1px dashed #EAE7E5;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .metric-list li:last-child {
      border-bottom: none;
    }

    .metric-list li span:last-child {
      color: var(--c7-text);
      font-weight: 500;
      font-family: monospace;
    }

    /* ========== Dashboard Showcase ========== */
    .dashboard-grid {
      display: grid;
      gap: 48px;
      align-items: center;
    }

    .dashboard-media {
      position: relative;
    }

    .dashboard-media img {
      border-radius: 20px;
      box-shadow: 0 24px 64px rgba(0, 0, 0, 0.1);
      border: 1px solid var(--c7-border);
    }

    .dashboard-media::after {
      content: '';
      position: absolute;
      inset: 0;
      border-radius: 20px;
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
      pointer-events: none;
    }

    .dashboard-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .dashboard-list li {
      display: flex;
      gap: 14px;
      padding: 14px 0;
      border-bottom: 1px solid var(--c7-border);
      font-size: 14px;
      color: var(--c7-text-secondary);
      align-items: flex-start;
    }

    .dashboard-list li:last-child {
      border-bottom: none;
    }

    .dashboard-list .check-icon {
      color: var(--c7-success);
      flex-shrink: 0;
      margin-top: 2px;
    }

    .dashboard-list li strong {
      color: var(--c7-text);
      font-weight: 600;
      display: block;
      margin-bottom: 2px;
    }

    /* ========== Scenario Cards ========== */
    .scenario-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 20px;
    }

    .scenario-card {
      background: #fff;
      border: 1px solid var(--c7-border);
      border-radius: 16px;
      padding: 28px;
      transition: all 0.3s ease;
      position: relative;
    }

    .scenario-card:hover {
      box-shadow: var(--c7-shadow-sm);
      border-color: var(--c7-primary);
      transform: translateY(-2px);
    }

    .scenario-num {
      font-size: 13px;
      font-weight: 700;
      color: var(--c7-primary);
      letter-spacing: 0.06em;
      margin-bottom: 12px;
      font-family: monospace;
    }

    .scenario-card h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--c7-text);
    }

    .scenario-card p {
      font-size: 14px;
      line-height: 1.65;
      color: var(--c7-text-secondary);
    }

    .scenario-card .tag-row {
      display: flex;
      gap: 6px;
      flex-wrap: wrap;
      margin-top: 16px;
    }

    .scenario-tag {
      font-size: 12px;
      background: var(--c7-primary-light);
      color: var(--c7-primary-dark);
      padding: 4px 10px;
      border-radius: 999px;
      font-weight: 500;
    }

    /* ========== Workflow ========== */
    .workflow-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .workflow-item {
      display: grid;
      grid-template-columns: 1fr;
      gap: 8px;
      padding: 24px 0;
      border-bottom: 1px solid var(--c7-border);
      position: relative;
    }

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

    .workflow-step {
      font-size: 13px;
      font-weight: 700;
      color: var(--c7-primary);
      font-family: monospace;
      letter-spacing: 0.08em;
    }

    .workflow-item h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--c7-text);
    }

    .workflow-item p {
      font-size: 14px;
      line-height: 1.65;
      color: var(--c7-text-secondary);
    }

    /* ========== FAQ ========== */
    .faq-list {
      max-width: 820px;
      margin: 0 auto;
      border-top: 1px solid var(--c7-border);
    }

    .faq-item {
      border-bottom: 1px solid var(--c7-border);
      transition: background 0.2s;
    }

    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 22px 4px;
      font-weight: 500;
      font-size: 15px;
      background: none;
      border: none;
      width: 100%;
      text-align: left;
      color: var(--c7-text);
      transition: color 0.2s;
      gap: 16px;
    }

    .faq-question:hover {
      color: var(--c7-primary);
    }

    .faq-icon {
      font-size: 22px;
      font-weight: 300;
      color: var(--c7-primary);
      transition: transform 0.3s ease;
      flex-shrink: 0;
      line-height: 1;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      font-size: 14px;
      line-height: 1.75;
      color: var(--c7-text-secondary);
      padding-left: 4px;
    }

    .faq-item.active .faq-answer {
      max-height: 320px;
      padding-bottom: 22px;
      padding-right: 24px;
    }

    /* ========== CTA ========== */
    .cta-section {
      padding: 84px 0;
      background: var(--c7-dark);
      position: relative;
      overflow: hidden;
    }

    .cta-box {
      text-align: center;
      max-width: 640px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }

    .cta-box h2 {
      color: #fff;
      font-size: 32px;
      font-weight: 700;
      letter-spacing: -0.02em;
      margin-bottom: 16px;
    }

    .cta-box p {
      color: #A8A29E;
      font-size: 15px;
      line-height: 1.7;
      margin-bottom: 32px;
    }

    .cta-actions {
      display: flex;
      gap: 14px;
      justify-content: center;
      flex-wrap: wrap;
    }

    /* ========== Footer ========== */
    .footer {
      background: #0C0A09;
      padding-top: 64px;
    }

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

    .footer-brand p {
      font-size: 14px;
      line-height: 1.75;
      margin-top: 16px;
      color: #A8A29E;
      max-width: 280px;
    }

    .footer-col h4 {
      font-size: 14px;
      font-weight: 600;
      color: #F5F5F4;
      margin-bottom: 16px;
      letter-spacing: 0.02em;
    }

    .footer-col ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }

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

    .footer-col a {
      color: #A8A29E;
      font-size: 14px;
      transition: color 0.2s;
    }

    .footer-col a:hover {
      color: var(--c7-primary-light);
    }

    .footer-contact li {
      color: #A8A29E;
      font-size: 14px;
      line-height: 1.6;
    }

    .footer-bottom {
      border-top: 1px solid #292524;
      padding: 24px 0;
    }

    .footer-bottom .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: #78716C;
      flex-wrap: wrap;
      gap: 8px;
    }

    /* ========== Responsive ========== */
    @media (min-width: 768px) {
      .feature-grid {
        grid-template-columns: 1fr 1fr;
      }

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

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

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

      .workflow-item {
        grid-template-columns: 120px 1fr 1fr;
        align-items: baseline;
        grid-template-areas: "step title desc";
        gap: 20px;
      }

      .workflow-step {
        grid-area: step;
      }

      .workflow-item h3 {
        grid-area: title;
      }

      .workflow-item p {
        grid-area: desc;
      }
    }

    @media (min-width: 1024px) {
      .metrics-grid {
        grid-template-columns: repeat(4, 1fr);
      }

      .dashboard-grid {
        grid-template-columns: 1fr 1fr;
        gap: 56px;
      }
    }

    @media (max-width: 1023px) {
      .nav-links {
        display: none;
      }

      .command-search {
        display: none;
      }

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

      .nav-actions .btn-accent {
        display: none;
      }

      .hero {
        padding: 120px 0 64px;
      }

      .hero h1 {
        font-size: 34px;
      }

      .hero-stats {
        gap: 1.5rem;
      }

      .hero-stat {
        padding-right: 1rem;
      }
    }

    @media (max-width: 767px) {
      .section {
        padding: 56px 0;
      }

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

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

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

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

      .hero-stats {
        gap: 1rem;
        flex-direction: column;
      }

      .hero-stat {
        padding-right: 0;
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        padding-bottom: 12px;
      }

      .hero-stat:last-child {
        border-bottom: none;
        padding-bottom: 0;
      }

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

    @media (max-width: 520px) {
      .container {
        padding-left: 1rem;
        padding-right: 1rem;
      }

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

      .metric-card {
        padding: 20px;
      }

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

    /* Focus ring */
    .focus-ring:focus-visible {
      outline: 2px solid var(--c7-accent);
      outline-offset: 2px;
      border-radius: 6px;
    }

    .btn:focus-visible,
    .nav-link:focus-visible,
    .faq-question:focus-visible,
    .command-search-btn:focus-visible {
      outline: 2px solid var(--c7-accent);
      outline-offset: 2px;
    }

    /* SVG icon baseline */
    svg {
      vertical-align: middle;
    }