/* roulang page: index */
:root {
  --primary: #0F766E;
  --primary-dark: #134E4A;
  --primary-light: rgba(15, 118, 110, 0.1);
  --accent: #F97316;
  --accent-hover: #EA580C;
  --bg: #FAF9F6;
  --white: #FFFFFF;
  --text: #1C1917;
  --text-secondary: #6B7280;
  --border: #E7E5E4;
  --border-light: #F0EFED;
  --bg-muted: #F1EFEA;
  --shadow-sm: 0 1px 3px rgba(28, 25, 23, 0.06), 0 4px 12px rgba(28, 25, 23, 0.04);
  --shadow-lg: 0 4px 12px rgba(28, 25, 23, 0.08), 0 12px 32px rgba(28, 25, 23, 0.06);
  --radius-lg: 20px;
  --radius-sm: 12px;
  --radius-full: 999px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color 0.25s ease; }
a:hover { color: var(--accent); }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid rgba(15, 118, 110, 0.3);
  outline-offset: 2px;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-tight { padding: 64px 0; }

.section-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 48px; flex-wrap: wrap; }
.section-header.center { flex-direction: column; align-items: center; text-align: center; gap: 12px; }
.section-eyebrow { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 0.06em; color: var(--primary); background: var(--primary-light); padding: 6px 16px; border-radius: var(--radius-full); margin-bottom: 12px; text-transform: uppercase; }
.section-header h2 { font-size: 30px; font-weight: 700; color: var(--text); line-height: 1.3; letter-spacing: -0.02em; }
.section-header.center h2 { margin-bottom: 8px; }
.section-header p { color: var(--text-secondary); max-width: 560px; font-size: 16px; }
.section-header.center p { margin: 0 auto; }
.text-link { font-weight: 600; font-size: 15px; color: var(--primary); white-space: nowrap; transition: color 0.25s ease; }
.text-link i { margin-left: 4px; transition: transform 0.25s ease; }
.text-link:hover { color: var(--accent); }
.text-link:hover i { transform: translateX(4px); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 28px; font-size: 15px; font-weight: 600; border-radius: var(--radius-full); border: none; cursor: pointer; transition: all 0.3s ease; white-space: nowrap; }
.btn-primary { background: var(--accent); color: var(--white); box-shadow: 0 2px 8px rgba(249, 115, 22, 0.3); }
.btn-primary:hover { background: var(--accent-hover); color: var(--white); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(249, 115, 22, 0.35); }
.btn-primary:active { transform: translateY(0); }
.btn-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: var(--primary-light); color: var(--primary); transform: translateY(-2px); }
.btn-outline:active { transform: translateY(0); }
.btn-lg { padding: 14px 36px; font-size: 16px; }

/* ── Header / Nav ── */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 999;
  height: 64px; background: rgba(250, 249, 246, 0.92);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: box-shadow 0.3s ease, background 0.3s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(250, 249, 246, 0.96);
  box-shadow: 0 2px 12px rgba(28, 25, 23, 0.06);
  border-bottom: 1px solid var(--border-light);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.header-left { display: flex; align-items: center; gap: 32px; }
.logo { display: flex; align-items: center; gap: 8px; font-size: 19px; font-weight: 800; color: var(--text); letter-spacing: -0.01em; white-space: nowrap; }
.logo-icon { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; background: var(--primary); color: var(--white); border-radius: 8px; font-size: 14px; font-weight: 800; }
.logo:hover .logo-icon { background: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  display: inline-block; padding: 8px 12px; font-size: 14px; font-weight: 500;
  color: var(--text-secondary); border-radius: 8px; position: relative; transition: color 0.25s ease, background 0.25s ease;
}
.nav-links a:hover { color: var(--primary); background: var(--primary-light); }
.nav-links a.active { color: var(--primary); font-weight: 700; }
.nav-links a.active::after {
  content: ''; position: absolute; left: 12px; right: 12px; bottom: 2px;
  height: 2px; background: var(--accent); border-radius: 2px;
}
.header-right { display: flex; align-items: center; gap: 12px; }
.search-box { position: relative; }
.search-box .search-input {
  width: 0; padding: 0; border: none; opacity: 0; font-size: 14px;
  border-radius: var(--radius-full); background: var(--white);
  border: 1px solid var(--border); transition: all 0.35s ease;
}
.search-box.open .search-input {
  width: 220px; padding: 8px 36px 8px 16px; opacity: 1;
}
.search-toggle { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 50%; background: transparent; color: var(--text-secondary); border: none; cursor: pointer; transition: all 0.3s ease; font-size: 15px; }
.search-toggle:hover { background: var(--primary-light); color: var(--primary); }
.search-submit { position: absolute; top: 50%; right: 12px; transform: translateY(-50%); background: transparent; border: none; color: var(--text-secondary); font-size: 13px; cursor: pointer; opacity: 0; transition: opacity 0.3s ease; }
.search-box.open .search-submit { opacity: 1; }
.header-cta { padding: 9px 22px; font-size: 14px; }
.hamburger { display: none; width: 40px; height: 40px; background: transparent; border: none; cursor: pointer; border-radius: 8px; align-items: center; justify-content: center; }
.hamburger:hover { background: var(--primary-light); }
.hamburger span { display: block; width: 20px; height: 2px; background: var(--text); margin: 3px auto; border-radius: 2px; transition: all 0.3s ease; }

/* Mobile Drawer */
.mobile-drawer {
  position: fixed; top: 0; right: -100%; width: 100%; height: 100vh;
  background: var(--primary-dark); z-index: 2000; transition: right 0.4s cubic-bezier(.77,0,.18,1); display: flex; flex-direction: column; padding: 24px;
}
.mobile-drawer.open { right: 0; }
.drawer-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 48px; }
.drawer-top .logo { color: var(--white); }
.drawer-top .logo-icon { background: var(--accent); }
.drawer-close { width: 40px; height: 40px; background: rgba(255,255,255,0.1); border: none; border-radius: 50%; color: var(--white); font-size: 18px; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: background 0.3s ease; }
.drawer-close:hover { background: rgba(255,255,255,0.2); }
.drawer-links { display: flex; flex-direction: column; gap: 8px; }
.drawer-links a { color: rgba(255,255,255,0.85); font-size: 20px; font-weight: 600; padding: 14px 12px; border-radius: 12px; transition: all 0.3s ease; }
.drawer-links a:hover { background: rgba(255,255,255,0.1); color: var(--white); }
.drawer-links a.active { color: var(--accent); background: rgba(255,255,255,0.08); }
.drawer-cta { margin-top: 32px; }
.drawer-cta .btn { width: 100%; }

/* ── Hero ── */
.hero-section { position: relative; padding-top: 160px; padding-bottom: 96px; overflow: hidden; }
.hero-section::before {
  content: ''; position: absolute; width: 420px; height: 420px; border-radius: 50%;
  background: rgba(15, 118, 110, 0.06); top: -140px; right: -100px;
}
.hero-section::after {
  content: ''; position: absolute; width: 200px; height: 200px;
  background: rgba(249, 115, 22, 0.05); border-radius: 40px; transform: rotate(30deg);
  bottom: 60px; left: -70px;
}
.hero-grid { position: relative; z-index: 2; align-items: center; }
.hero-copy { padding-right: 40px; }
.hero-copy h1 { font-size: 42px; font-weight: 900; line-height: 1.25; letter-spacing: -0.02em; color: var(--text); margin-bottom: 20px; }
.hero-copy h1 .highlight { color: var(--primary); position: relative; }
.hero-copy h1 .highlight::after { content: ''; position: absolute; left: 0; right: 0; bottom: 2px; height: 8px; background: rgba(249, 115, 22, 0.2); border-radius: 4px; z-index: -1; }
.hero-sub { font-size: 18px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 32px; max-width: 480px; }
.hero-actions { display: flex; align-items: center; gap: 16px; margin-bottom: 40px; flex-wrap: wrap; }
.hero-trust { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.trust-item { display: inline-flex; align-items: center; gap: 8px; background: var(--white); border: 1px solid var(--border-light); border-radius: var(--radius-full); padding: 8px 16px; font-size: 13px; font-weight: 600; color: var(--text-secondary); box-shadow: var(--shadow-sm); }
.trust-item i { color: var(--primary); font-size: 14px; }

.hero-visual { position: relative; }
.hero-visual-card {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-lg); background: var(--bg-muted);
}
.hero-visual-card img { width: 100%; height: 380px; object-fit: cover; border-radius: var(--radius-lg); border: 1px solid var(--border-light); }
.hero-visual-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(19, 78, 74, 0.35), transparent 60%); border-radius: var(--radius-lg); }
.hero-badge {
  position: absolute; display: flex; align-items: center; gap: 12px;
  background: rgba(255, 255, 255, 0.95); border-radius: 16px; padding: 14px 20px;
  box-shadow: var(--shadow-lg); backdrop-filter: blur(4px);
}
.hero-badge-top { top: 24px; left: 24px; }
.hero-badge-bottom { bottom: 24px; right: 24px; }
.hero-badge .badge-icon { width: 42px; height: 42px; border-radius: 12px; background: var(--primary-light); display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 18px; }
.hero-badge .badge-num { font-size: 28px; font-weight: 900; color: var(--primary); font-variant-numeric: tabular-nums; line-height: 1.1; font-family: "JetBrains Mono", monospace; }
.hero-badge .badge-label { font-size: 13px; color: var(--text-secondary); line-height: 1.4; }

/* ── KPI ── */
.kpi-section { padding: 80px 0 16px; }
.kpi-grid .kpi-card {
  background: var(--white); border-radius: var(--radius-lg); padding: 32px;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border-light);
  transition: transform 0.3s ease, box-shadow 0.3s ease; height: 100%;
}
.kpi-grid .kpi-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.kpi-card .kpi-label { font-size: 14px; color: var(--text-secondary); font-weight: 500; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.kpi-card .kpi-label i { color: var(--primary); font-size: 15px; }
.kpi-card .kpi-num { font-size: 42px; font-weight: 900; color: var(--primary); font-variant-numeric: tabular-nums; line-height: 1.1; margin-bottom: 8px; font-family: "JetBrains Mono", monospace; }
.kpi-card .kpi-num.orange { color: var(--accent); }
.kpi-card .kpi-num small { font-size: 22px; font-weight: 700; }
.kpi-card .kpi-trend { font-size: 12px; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; }
.kpi-card .kpi-trend i { color: var(--primary); }
.kpi-bar { height: 4px; background: var(--bg-muted); border-radius: 4px; margin-bottom: 14px; overflow: hidden; }
.kpi-bar span { display: block; height: 100%; border-radius: 4px; background: var(--primary); }

/* ── Services ── */
.services-section { padding: 80px 0; }
.services-grid .service-card {
  background: var(--white); border-radius: var(--radius-lg); padding: 32px;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border-light);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex; flex-direction: column; height: 100%; position: relative;
}
.services-grid .service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.service-card .service-icon {
  width: 48px; height: 48px; border-radius: 14px; background: var(--primary-light);
  display: flex; align-items: center; justify-content: center; color: var(--primary);
  font-size: 20px; margin-bottom: 20px;
}
.service-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.service-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; flex-grow: 1; }
.service-card .service-link { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; transition: gap 0.3s ease; }
.service-card .service-link:hover { gap: 10px; color: var(--accent); }
.service-card.accent-left { border-left: 4px solid var(--accent); }
.service-card.featured { background: var(--primary-dark); border-color: transparent; }
.service-card.featured .service-icon { background: rgba(255,255,255,0.15); color: var(--white); }
.service-card.featured h3 { color: var(--white); }
.service-card.featured p { color: rgba(255,255,255,0.7); }
.service-card.featured .service-link { color: var(--accent); }

/* ── Compare ── */
.compare-section { padding: 80px 0; background: var(--bg-muted); }
.compare-grid { align-items: stretch; }
.compare-card { border-radius: var(--radius-lg); padding: 40px; height: 100%; box-shadow: var(--shadow-sm); }
.compare-old { background: var(--white); border: 1px solid var(--border-light); }
.compare-new { background: var(--primary-dark); color: var(--white); }
.compare-card h3 { font-size: 22px; font-weight: 700; margin-bottom: 24px; display: flex; align-items: center; gap: 10px; }
.compare-old h3 { color: var(--text); }
.compare-new h3 { color: var(--white); }
.compare-card ul { list-style: none; }
.compare-card ul li { display: flex; align-items: flex-start; gap: 12px; padding: 10px 0; font-size: 15px; line-height: 1.6; }
.compare-old ul li { color: var(--text-secondary); }
.compare-new ul li { color: rgba(255,255,255,0.85); }
.compare-card ul li i { flex-shrink: 0; margin-top: 4px; font-size: 14px; }
.compare-old ul li i { color: #DC2626; }
.compare-new ul li i { color: var(--accent); }
.compare-new ul li .highlight-num { color: var(--accent); font-weight: 800; font-variant-numeric: tabular-nums; font-family: "JetBrains Mono", monospace; }
.vs-col { display: flex; align-items: center; justify-content: center; }
.vs-badge { width: 64px; height: 64px; border-radius: 50%; background: var(--accent); color: var(--white); display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 900; box-shadow: 0 4px 16px rgba(249, 115, 22, 0.4); font-family: "JetBrains Mono", monospace; }

/* ── Latest / CMS ── */
.latest-section { padding: 80px 0; }
.featured-card {
  display: flex; background: var(--white); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm); border: 1px solid var(--border-light);
  overflow: hidden; height: 100%;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.featured-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.featured-thumb { width: 240px; flex-shrink: 0; background: var(--bg-muted); }
.featured-thumb img { width: 100%; height: 100%; object-fit: cover; }
.featured-content { padding: 24px; display: flex; flex-direction: column; align-items: flex-start; }
.featured-content h3 { font-size: 18px; font-weight: 700; line-height: 1.5; margin: 12px 0 10px; color: var(--text); }
.featured-content p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; flex-grow: 1; }
.featured-content .date { font-size: 13px; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; }
.tag {
  display: inline-block; font-size: 12px; font-weight: 600; color: var(--primary);
  background: var(--primary-light); border-radius: var(--radius-full); padding: 4px 12px;
}
.compact-list { background: var(--white); border-radius: var(--radius-lg); border: 1px solid var(--border-light); box-shadow: var(--shadow-sm); padding: 8px 24px; height: 100%; }
.compact-item { display: flex; align-items: center; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--border-light); transition: all 0.3s ease; }
.compact-item:last-child { border-bottom: none; }
.compact-item:hover .compact-title { color: var(--primary); }
.compact-item .tag { flex-shrink: 0; }
.compact-title { font-size: 14px; font-weight: 600; color: var(--text); flex-grow: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: color 0.25s ease; }
.compact-item .date { font-size: 13px; color: var(--text-secondary); white-space: nowrap; }
.empty-state {
  border: 2px dashed var(--border); border-radius: var(--radius-lg);
  padding: 64px 24px; text-align: center; background: var(--white);
  width: 100%;
}
.empty-state i { font-size: 40px; color: var(--border); margin-bottom: 16px; }
.empty-state p { color: var(--text-secondary); font-size: 15px; }

/* ── FAQ ── */
.faq-section { padding: 80px 0; background: var(--bg-muted); }
.faq-wrap { max-width: 820px; margin: 0 auto; }
.faq-card { background: var(--white); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); overflow: hidden; }
.faq-item { border-bottom: 1px solid var(--border-light); }
.faq-item:last-child { border-bottom: none; }
.faq-question { display: flex; align-items: center; gap: 16px; padding: 20px 24px; cursor: pointer; transition: background 0.3s ease; }
.faq-question:hover { background: rgba(15, 118, 110, 0.02); }
.faq-q-icon { width: 32px; height: 32px; border-radius: 50%; background: var(--primary); color: var(--white); display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 700; flex-shrink: 0; }
.faq-question .faq-q-text { flex-grow: 1; font-size: 16px; font-weight: 600; color: var(--text); }
.faq-toggle { width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; color: var(--text-secondary); transition: transform 0.35s ease, color 0.3s ease; font-size: 16px; flex-shrink: 0; }
.faq-item.active .faq-toggle { transform: rotate(45deg); color: var(--accent); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.4s ease; padding: 0 24px; }
.faq-item.active .faq-answer { max-height: 500px; padding: 0 24px 24px 72px; }
.faq-answer p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; }

/* ── Contact / Form ── */
.contact-section { padding: 80px 0; }
.contact-card { background: var(--white); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); border: 1px solid var(--border-light); overflow: hidden; }
.contact-grid { display: flex; }
.contact-form-side { flex: 1.4; padding: 40px; }
.contact-info-side { flex: 1; background: var(--primary-dark); padding: 40px; color: var(--white); position: relative; overflow: hidden; }
.contact-info-side::after { content: ''; position: absolute; width: 220px; height: 220px; border-radius: 50%; background: rgba(255,255,255,0.05); bottom: -80px; right: -60px; }
.contact-form-side h3 { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.contact-form-side > p { font-size: 14px; color: var(--text-secondary); margin-bottom: 32px; }
.contact-form-side label { font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 8px; display: block; }
.contact-form-side input[type="text"], .contact-form-side input[type="tel"], .contact-form-side input[type="email"], .contact-form-side select, .contact-form-side textarea {
  width: 100%; padding: 12px 16px; border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); background: var(--bg); font-size: 14px; color: var(--text); margin-bottom: 20px; transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.contact-form-side select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; }
.contact-form-side input:focus, .contact-form-side select:focus, .contact-form-side textarea:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15); background: var(--white); outline: none;
}
.contact-form-side textarea { min-height: 110px; resize: vertical; }
.form-row { display: flex; gap: 16px; }
.form-row > div { flex: 1; }
.form-success { display: none; background: var(--primary-light); border-radius: var(--radius-sm); padding: 16px 20px; color: var(--primary); font-size: 14px; font-weight: 600; margin-bottom: 20px; }
.form-success.show { display: block; animation: fadeIn 0.4s ease; }
.contact-info-side h4 { font-size: 22px; font-weight: 700; margin-bottom: 16px; }
.contact-info-side > p { font-size: 14px; color: rgba(255,255,255,0.75); line-height: 1.7; margin-bottom: 32px; position: relative; z-index: 2; }
.contact-info-list { list-style: none; position: relative; z-index: 2; }
.contact-info-list li { display: flex; align-items: center; gap: 12px; padding: 10px 0; font-size: 14px; color: rgba(255,255,255,0.85); }
.contact-info-list li i { width: 32px; height: 32px; border-radius: 10px; background: rgba(255,255,255,0.12); display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 13px; flex-shrink: 0; }

/* ── Footer ── */
.site-footer { background: var(--primary-dark); color: rgba(255,255,255,0.75); padding-top: 80px; }
.footer-grid { padding-bottom: 48px; }
.footer-brand .footer-logo { display: flex; align-items: center; gap: 8px; font-size: 20px; font-weight: 800; color: var(--white); margin-bottom: 16px; }
.footer-brand .footer-logo .logo-icon { background: var(--accent); }
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.6); max-width: 260px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: var(--white); margin-bottom: 20px; letter-spacing: 0.02em; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a { font-size: 14px; color: rgba(255,255,255,0.65); transition: color 0.3s ease; }
.footer-col ul a:hover { color: var(--accent); }
.footer-col .footer-contact li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: rgba(255,255,255,0.65); }
.footer-col .footer-contact li i { color: var(--accent); margin-top: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 0; text-align: center; }
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.45); }

/* ── Scroll Top ── */
.scroll-top { position: fixed; bottom: 24px; right: 24px; width: 44px; height: 44px; border-radius: 50%; background: var(--primary); color: var(--white); border: none; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 16px; box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transition: all 0.4s ease; z-index: 900; }
.scroll-top.show { opacity: 1; visibility: visible; }
.scroll-top:hover { background: var(--accent); transform: translateY(-3px); }

@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ── Responsive ── */
@media screen and (max-width: 1024px) {
  .hero-copy h1 { font-size: 36px; }
  .hero-visual-card img { height: 320px; }
  .featured-card { flex-direction: column; }
  .featured-thumb { width: 100%; height: 180px; }
  .compare-card { padding: 28px; }
  .contact-grid { flex-direction: column; }
  .contact-info-side { min-height: auto; }
}

@media screen and (max-width: 768px) {
  .section { padding: 64px 0; }
  .nav-links, .header-right .btn, .header-right .search-box { display: none; }
  .hamburger { display: flex; }
  .hero-section { padding-top: 120px; padding-bottom: 64px; }
  .hero-copy { padding-right: 0; }
  .hero-copy h1 { font-size: 32px; }
  .hero-sub { font-size: 16px; }
  .hero-visual-card img { height: 260px; }
  .kpi-grid .kpi-card { margin-bottom: 16px; }
  .services-grid .service-card { margin-bottom: 16px; }
  .vs-col { padding: 12px 0; }
  .vs-badge { width: 50px; height: 50px; font-size: 15px; }
  .compare-card { margin-bottom: 16px; }
  .faq-item.active .faq-answer { padding-left: 24px; }
  .form-row { flex-direction: column; gap: 0; }
  .footer-col { margin-bottom: 32px; }
  .footer-bottom p { font-size: 12px; line-height: 1.6; }
  .compact-list { margin-top: 16px; }
  .featured-content h3 { font-size: 17px; }
  .latest-grid .columns { padding: 0 15px; }
}

@media screen and (max-width: 520px) {
  .section { padding: 48px 0; }
  .container { padding: 0 16px; }
  .hero-copy h1 { font-size: 28px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .hero-trust { flex-direction: column; align-items: flex-start; }
  .kpi-card .kpi-num { font-size: 32px; }
  .section-header h2 { font-size: 25px; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .contact-form-side, .contact-info-side { padding: 24px; }
  .scroll-top { display: none; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #0F766E;
  --primary-dark: #134E4A;
  --primary-light: rgba(15, 118, 110, 0.08);
  --accent: #F97316;
  --accent-dark: #EA580C;
  --bg: #FAF9F6;
  --white: #FFFFFF;
  --text: #1C1917;
  --text-muted: #6B7280;
  --border: #E7E5E4;
  --card-border: #F0EFED;
  --placeholder-bg: #F1EFEA;
  --radius-xl: 20px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(28, 25, 23, 0.06), 0 4px 12px rgba(28, 25, 23, 0.04);
  --shadow-lg: 0 4px 12px rgba(28, 25, 23, 0.08), 0 12px 32px rgba(28, 25, 23, 0.06);
  --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-num: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  --nav-h: 64px;
  --section-pad: 96px;
}

/* ===== 基础 Reset ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
  object-fit: cover;
  background: var(--placeholder-bg);
  border: 1px solid var(--card-border);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* ===== 容器 ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 导航 ===== */
.nav-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 249, 246, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  height: var(--nav-h);
  transition: box-shadow 0.3s ease;
}

.nav-header.scrolled {
  box-shadow: 0 4px 20px rgba(28, 25, 23, 0.06);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-size: 19px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.01em;
  transition: opacity 0.2s ease;
}

.logo:hover {
  opacity: 0.85;
  color: var(--text);
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  font-weight: 900;
  font-size: 18px;
  font-family: var(--font-num);
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
}

.nav-links a {
  position: relative;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: 999px;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-links a:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.nav-links a.active {
  color: var(--primary);
  font-weight: 700;
  background: var(--primary-light);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

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

.search-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--text);
  cursor: pointer;
  transition: all 0.2s ease;
}

.search-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.search-box {
  display: none;
  align-items: center;
  position: absolute;
  right: 180px;
  top: 14px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 16px;
  box-shadow: var(--shadow-sm);
  z-index: 120;
}

.search-box.open {
  display: flex;
}

.search-box input {
  border: none;
  outline: none;
  background: transparent;
  width: 200px;
  font-size: 14px;
}

.search-box i {
  color: var(--text-muted);
  font-size: 14px;
  margin-right: 8px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
}

.nav-cta:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(249, 115, 22, 0.3);
}

.nav-cta:active {
  transform: translateY(0);
}

.nav-cta:focus-visible,
.search-toggle:focus-visible,
.hamburger:focus-visible {
  outline: 3px solid rgba(15, 118, 110, 0.3);
  outline-offset: 2px;
}

.hamburger {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  background: var(--white);
  border-radius: 10px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--text);
}

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--primary-dark);
  z-index: 200;
  flex-direction: column;
  padding: 24px;
  overflow-y: auto;
}

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

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}

.mobile-menu .logo {
  color: #fff;
}

.mobile-menu .logo-icon {
  background: var(--accent);
}

.mobile-menu-close {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: transparent;
  color: #fff;
  border-radius: 10px;
  cursor: pointer;
  font-size: 18px;
}

.mobile-menu-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mobile-menu-links a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 20px;
  font-weight: 600;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: color 0.2s ease;
}

.mobile-menu-links a:hover {
  color: var(--accent);
}

.mobile-menu-links a.active {
  color: var(--accent);
}

.mobile-menu-cta {
  margin-top: 32px;
}

.mobile-menu-cta a {
  display: inline-flex;
  background: var(--accent);
  color: #fff;
  padding: 12px 28px;
  border-radius: 999px;
  font-weight: 600;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--placeholder-bg);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--primary);
  font-weight: 500;
}

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

.breadcrumb .sep {
  color: var(--text-muted);
  margin: 0 2px;
}

.breadcrumb span:last-child {
  font-weight: 600;
  color: var(--text);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 80px 0 72px;
  overflow: hidden;
  background: var(--bg);
}

.hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: rgba(15, 118, 110, 0.06);
}

.hero::after {
  content: "";
  position: absolute;
  bottom: 40px;
  left: -40px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(249, 115, 22, 0.06);
}

.hero-grid {
  display: flex;
  align-items: center;
  gap: 48px;
  position: relative;
  z-index: 1;
}

.hero-content {
  flex: 0 0 55%;
  max-width: 55%;
}

.hero-content h1 {
  font-size: 42px;
  line-height: 1.25;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 20px;
}

.hero-content h1 em {
  font-style: normal;
  color: var(--primary);
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 440px;
  line-height: 1.7;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 13px 30px;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: 0 2px 8px rgba(249, 115, 22, 0.25);
}

.btn-primary:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(249, 115, 22, 0.3);
}

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

.btn-primary:focus-visible,
.btn-outline:focus-visible {
  outline: 3px solid rgba(15, 118, 110, 0.3);
  outline-offset: 2px;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--primary);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border: 1.5px solid var(--primary);
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.25s ease;
}

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

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

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

.trust-item i {
  color: var(--primary);
  font-size: 15px;
}

.hero-visual {
  flex: 0 0 45%;
  max-width: 45%;
  position: relative;
}

.hero-visual .main-image {
  width: 100%;
  height: 440px;
  border-radius: var(--radius-xl);
  object-fit: cover;
  box-shadow: var(--shadow-lg);
}

.hero-visual .main-image::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-xl);
  background: linear-gradient(to top, rgba(19, 78, 74, 0.2), transparent 40%);
}

.float-badge {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--white);
  border-radius: 16px;
  padding: 14px 18px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--card-border);
  z-index: 2;
}

.float-badge .badge-icon {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 14px;
  color: #fff;
}

.float-badge .badge-text {
  font-size: 13px;
  line-height: 1.4;
  color: var(--text);
}

.float-badge .badge-text strong {
  display: block;
  font-size: 14px;
  color: var(--text);
}

.float-badge-1 {
  top: 24px;
  left: -20px;
}

.float-badge-1 .badge-icon {
  background: var(--primary);
}

.float-badge-2 {
  bottom: 90px;
  right: -12px;
}

.float-badge-2 .badge-icon {
  background: var(--accent);
}

.float-badge-3 {
  bottom: 24px;
  left: 32px;
}

.float-badge-3 .badge-icon {
  background: var(--primary-dark);
}

/* ===== 通用板块 ===== */
.section {
  padding: var(--section-pad) 0;
}

.section-alt {
  background: var(--white);
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 14px;
  line-height: 1.3;
}

.section-head p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== 分类简介区 ===== */
.intro-grid {
  display: flex;
  align-items: center;
  gap: 64px;
}

.intro-content {
  flex: 1;
}

.intro-content h2 {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
  line-height: 1.3;
}

.intro-content p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 16px;
}

.intro-content .intro-point {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
  color: var(--text);
  font-size: 15px;
}

.intro-content .intro-point i {
  color: var(--primary);
  margin-top: 3px;
  font-size: 16px;
}

.intro-image {
  flex: 1;
  position: relative;
}

.intro-image img {
  width: 100%;
  height: 380px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.intro-image .image-note {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  background: rgba(19, 78, 74, 0.85);
  color: #fff;
  border-radius: var(--radius-md);
  padding: 10px 16px;
  font-size: 14px;
  text-align: center;
  backdrop-filter: blur(4px);
}

/* ===== 识别要点卡 ===== */
.points-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.point-card {
  background: var(--white);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.point-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.point-card:nth-child(2)::before {
  background: var(--accent);
}

.point-card:nth-child(3)::before {
  background: var(--primary);
}

.point-card:nth-child(4)::before {
  background: var(--accent);
}

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

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

.point-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-light);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--primary);
  margin-bottom: 20px;
}

.point-card:nth-child(2) .point-icon {
  background: rgba(249, 115, 22, 0.1);
  color: var(--accent);
}

.point-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

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

/* ===== 内链指引卡片 ===== */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.guide-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--card-border);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

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

.guide-card .card-image {
  position: relative;
  height: 180px;
  overflow: hidden;
  background: var(--placeholder-bg);
}

.guide-card .card-image img {
  width: 100%;
  height: 100%;
  border-radius: 0;
  border: none;
  transition: transform 0.4s ease;
  object-fit: cover;
}

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

.guide-card .card-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(19, 78, 74, 0.15), transparent 50%);
}

.guide-card .card-body {
  padding: 26px 28px 28px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.guide-card .card-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
  align-self: flex-start;
}

.guide-card:nth-child(2) .card-tag {
  background: rgba(249, 115, 22, 0.1);
  color: var(--accent-dark);
}

.guide-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
  line-height: 1.4;
}

.guide-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
  flex: 1;
}

.guide-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  transition: gap 0.2s ease, color 0.2s ease;
}

.guide-card .card-link:hover {
  color: var(--accent-dark);
  gap: 10px;
}

/* ===== 流程步骤 ===== */
.steps-section {
  background: var(--white);
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
}

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

.step-card {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 36px 28px 28px;
  text-align: center;
  transition: all 0.3s ease;
}

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

.step-num {
  font-family: var(--font-num);
  font-size: 44px;
  font-weight: 900;
  color: var(--primary);
  opacity: 0.2;
  line-height: 1;
  margin-bottom: 12px;
  display: inline-block;
}

.step-card:nth-child(2) .step-num {
  color: var(--accent);
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

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

.step-arrow {
  position: absolute;
  top: 50%;
  right: -20px;
  width: 40px;
  height: 40px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  z-index: 2;
  transform: translateY(-50%);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.35);
}

.step-card:last-child .step-arrow {
  display: none;
}

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

.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  margin-bottom: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease;
}

.faq-item:hover {
  box-shadow: var(--shadow-lg);
}

.faq-question {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: background 0.2s ease;
}

.faq-question:hover {
  background: rgba(15, 118, 110, 0.02);
}

.faq-q-icon {
  width: 30px;
  height: 30px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  flex-shrink: 0;
}

.faq-toggle {
  margin-left: auto;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-muted);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq-answer {
  display: none;
  padding: 0 24px 20px;
  padding-left: 70px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== CTA 区块 ===== */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: var(--primary-dark);
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -40px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
}

.cta-section::after {
  content: "";
  position: absolute;
  bottom: -100px;
  left: 30%;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(249, 115, 22, 0.08);
}

.cta-grid {
  display: flex;
  align-items: center;
  gap: 48px;
  position: relative;
  z-index: 1;
}

.cta-content {
  flex: 1;
}

.cta-content h2 {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.cta-content p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 16px;
  line-height: 1.7;
  max-width: 480px;
}

.cta-form {
  flex: 1;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-xl);
  padding: 32px;
  backdrop-filter: blur(4px);
}

.cta-form label {
  color: rgba(255, 255, 255, 0.9);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  display: block;
}

.cta-form input,
.cta-form textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  color: #fff;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  margin-bottom: 16px;
}

.cta-form input::placeholder,
.cta-form textarea::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.cta-form input:focus,
.cta-form textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.2);
}

.cta-form textarea {
  height: 80px;
  resize: vertical;
}

.cta-form .btn-primary {
  width: 100%;
  justify-content: center;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--primary-dark);
  color: #fff;
  padding: 72px 0 0;
}

.footer-grid {
  display: flex;
  gap: 40px;
  margin-bottom: 56px;
}

.footer-brand {
  flex: 2;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-logo .logo-icon {
  background: var(--accent);
}

.footer-logo span:last-child {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  line-height: 1.8;
  max-width: 340px;
}

.footer-col {
  flex: 1;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  transition: color 0.2s ease;
}

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

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  text-align: center;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  :root {
    --section-pad: 64px;
  }

  .nav-links a {
    padding: 8px 10px;
    font-size: 14px;
  }

  .hero-content h1 {
    font-size: 36px;
  }

  .hero-grid {
    gap: 32px;
  }

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

  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .step-arrow {
    display: none;
  }

  .footer-grid {
    flex-wrap: wrap;
  }

  .footer-brand {
    flex: 0 0 100%;
  }
}

@media (max-width: 768px) {
  :root {
    --section-pad: 48px;
  }

  .nav-links {
    display: none;
  }

  .nav-actions .search-toggle {
    display: none;
  }

  .nav-actions .nav-cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }

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

  .hero-content {
    flex: 0 0 100%;
    max-width: 100%;
  }

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

  .hero-visual {
    flex: 0 0 100%;
    max-width: 100%;
  }

  .hero-visual .main-image {
    height: 340px;
  }

  .float-badge-1 {
    left: 12px;
  }

  .float-badge-2 {
    right: 12px;
  }

  .intro-grid {
    flex-direction: column;
    gap: 40px;
  }

  .intro-image img {
    height: 280px;
  }

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

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

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

  .cta-grid {
    flex-direction: column;
    gap: 32px;
  }

  .cta-content h2 {
    font-size: 28px;
  }

  .search-box {
    right: 16px;
    left: 16px;
    top: 12px;
  }

  .search-box input {
    width: 100%;
  }

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

  .footer-grid {
    flex-direction: column;
    gap: 32px;
  }
}

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

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

  .hero-content h1 {
    font-size: 28px;
  }

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

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

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

  .hero-trust {
    flex-direction: column;
    gap: 10px;
  }

  .float-badge-1 {
    top: 12px;
  }

  .float-badge-2 {
    bottom: 80px;
  }

  .float-badge-3 {
    left: 12px;
    bottom: 12px;
  }

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

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

  .intro-content h2 {
    font-size: 24px;
  }

  .guide-card .card-image {
    height: 160px;
  }

  .cta-form {
    padding: 24px 20px;
  }

  .breadcrumb {
    font-size: 12px;
  }
}

/* roulang page: article */
/* ===== Design Tokens ===== */
:root {
  --primary: #0F766E;
  --primary-dark: #134E4A;
  --accent: #F97316;
  --accent-dark: #EA580C;
  --bg: #FAF9F6;
  --card-bg: #FFFFFF;
  --text: #1C1917;
  --text-muted: #6B7280;
  --border: #E7E5E4;
  --border-light: #F0EFED;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 3px rgba(28,25,23,0.06), 0 4px 12px rgba(28,25,23,0.04);
  --shadow-lg: 0 4px 12px rgba(28,25,23,0.08), 0 12px 32px rgba(28,25,23,0.06);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;
  --header-h: 64px;
  --space-section: 96px;
  --space-section-md: 64px;
  --space-section-sm: 48px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  margin: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: var(--primary); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--accent); }
ul, ol, dl, p, figure, h1, h2, h3, h4, h5, h6 { margin: 0; padding: 0; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.row { max-width: 1200px; margin-left: auto; margin-right: auto; }
.row .columns { padding-left: 12px; padding-right: 12px; }

/* ===== Reading Progress ===== */
.reading-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: var(--accent); z-index: 300; transition: width 0.1s linear;
  border-radius: 0 3px 3px 0;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 600; font-size: 15px; line-height: 1; padding: 13px 28px;
  border-radius: 999px; border: none; cursor: pointer;
  transition: all 0.25s ease; font-family: var(--font);
  text-align: center; white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(249,115,22,0.3); }
.btn-primary:active { transform: translateY(0); }
.btn-outline { background: transparent; border: 1.5px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: rgba(15,118,110,0.05); color: var(--primary-dark); transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--primary-dark); }
.btn-light:hover { background: #f0fdfa; color: var(--primary-dark); transform: translateY(-2px); }
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn-lg { padding: 15px 36px; font-size: 16px; }
.btn:focus-visible, .search-btn:focus-visible, .nav-toggle:focus-visible, .drawer-close:focus-visible {
  outline: 3px solid rgba(15,118,110,0.3); outline-offset: 2px;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky; top: 0; z-index: 200;
  background: rgba(250,249,246,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  height: var(--header-h);
}
.site-header.scrolled { box-shadow: 0 4px 16px rgba(28,25,23,0.05); }
.header-inner {
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.header-left { display: flex; align-items: center; gap: 28px; flex: 1; min-width: 0; }
.brand { display: flex; align-items: center; flex-shrink: 0; }
.brand-link { display: inline-flex; align-items: center; gap: 10px; }
.logo-icon {
  width: 36px; height: 36px; border-radius: 11px;
  background: var(--primary-dark); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 18px; letter-spacing: -0.02em;
}
.brand-name {
  font-size: 18px; font-weight: 800; color: var(--primary-dark);
  letter-spacing: -0.01em; white-space: nowrap;
}
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a {
  color: var(--text-muted); font-size: 15px; font-weight: 500;
  padding: 6px 0; position: relative; transition: color 0.2s ease;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--primary); }
.nav-links a.active { color: var(--primary); font-weight: 700; }
.nav-links a.active::after {
  content: ''; position: absolute; left: 0; bottom: -2px;
  width: 100%; height: 2px; background: var(--accent); border-radius: 2px;
}
.header-right { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.header-search { position: relative; display: flex; align-items: center; }
.search-btn {
  width: 38px; height: 38px; border-radius: 50%;
  border: none; background: transparent; color: var(--text);
  font-size: 15px; cursor: pointer; transition: all 0.2s ease;
  display: inline-flex; align-items: center; justify-content: center;
}
.search-btn:hover { background: rgba(15,118,110,0.08); color: var(--primary); }
.search-input-wrap {
  position: absolute; right: 44px; top: 50%; transform: translateY(-50%) scaleX(0);
  transform-origin: right center; width: 220px;
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 0 12px; height: 38px;
  display: flex; align-items: center; gap: 8px;
  opacity: 0; pointer-events: none;
  transition: all 0.25s ease;
  box-shadow: var(--shadow-sm);
}
.search-input-wrap.open { transform: translateY(-50%) scaleX(1); opacity: 1; pointer-events: auto; }
.search-input-wrap input {
  border: none; outline: none; font-size: 14px; width: 100%;
  background: transparent; color: var(--text);
}
.search-input-wrap input::placeholder { color: #a8a29e; }
.search-input-wrap i { color: var(--text-muted); font-size: 13px; flex-shrink: 0; }
.nav-toggle {
  display: none; width: 38px; height: 38px; border-radius: var(--radius-sm);
  border: none; background: transparent; color: var(--text);
  font-size: 18px; cursor: pointer;
  align-items: center; justify-content: center;
}
.nav-toggle:hover { background: rgba(15,118,110,0.08); color: var(--primary); }
.header-cta { font-size: 14px; padding: 10px 22px; }

/* ===== Mobile Drawer ===== */
.drawer-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(19,78,74,0.5); backdrop-filter: blur(4px);
  opacity: 0; pointer-events: none; transition: opacity 0.3s ease; z-index: 250;
}
.drawer-overlay.open { opacity: 1; pointer-events: auto; }
.mobile-drawer {
  position: fixed; top: 0; right: 0; bottom: 0; width: 300px; max-width: 85vw;
  background: var(--primary-dark); color: #fff; z-index: 300;
  transform: translateX(100%); transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
  display: flex; flex-direction: column; padding: 28px 24px; overflow-y: auto;
}
.mobile-drawer.open { transform: translateX(0); }
.drawer-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 36px; }
.drawer-header .brand-name { color: #fff; }
.drawer-header .logo-icon { background: var(--accent); color: #fff; }
.drawer-close {
  width: 36px; height: 36px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.2);
  background: transparent; color: #fff; font-size: 16px; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: background 0.2s ease;
}
.drawer-close:hover { background: rgba(255,255,255,0.1); }
.drawer-links { display: flex; flex-direction: column; gap: 4px; margin-bottom: 32px; }
.drawer-links a {
  color: rgba(255,255,255,0.85); font-size: 16px; font-weight: 500;
  padding: 13px 14px; border-radius: var(--radius-md); transition: all 0.2s ease;
}
.drawer-links a:hover, .drawer-links a.active { background: rgba(255,255,255,0.08); color: #fff; }
.drawer-divider { height: 1px; background: rgba(255,255,255,0.12); margin: 16px 0 24px; }
.drawer-cta { text-align: center; }

/* ===== Breadcrumb ===== */
.article-breadcrumb { padding: 28px 0 0; }
.breadcrumb-pill {
  display: inline-flex; align-items: center; gap: 8px; flex-wrap: wrap;
  background: #F1EFEA; border-radius: 999px; padding: 8px 18px;
  font-size: 14px; color: var(--text-muted);
}
.breadcrumb-pill a { color: var(--text-muted); transition: color 0.2s ease; }
.breadcrumb-pill a:hover { color: var(--primary); }
.breadcrumb-pill .sep { color: #c0bdb6; font-size: 12px; }
.breadcrumb-pill .current { color: var(--text); font-weight: 600; max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ===== Article Hero ===== */
.article-hero {
  position: relative;
  padding: 36px 0 20px;
  overflow: hidden;
}
.article-hero::before {
  content: ''; position: absolute; top: -100px; right: -60px;
  width: 300px; height: 300px; border-radius: 50%;
  background: rgba(15,118,110,0.04);
}
.article-hero::after {
  content: ''; position: absolute; bottom: -40px; left: -30px;
  width: 140px; height: 140px; border-radius: 50%;
  background: rgba(249,115,22,0.04);
}
.article-hero-inner { max-width: 860px; margin: 0 auto; position: relative; z-index: 1; }
.article-tag-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.article-category-tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(15,118,110,0.1); color: var(--primary);
  font-size: 13px; font-weight: 600; padding: 5px 14px; border-radius: 999px;
}
.article-source-tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(249,115,22,0.1); color: var(--accent-dark);
  font-size: 13px; font-weight: 600; padding: 5px 14px; border-radius: 999px;
}
.article-title {
  font-size: 36px; font-weight: 800; line-height: 1.3;
  letter-spacing: -0.02em; color: var(--text); margin: 0 0 16px;
}
.article-meta {
  display: flex; align-items: center; gap: 22px; flex-wrap: wrap;
  color: var(--text-muted); font-size: 14px;
}
.meta-item { display: inline-flex; align-items: center; gap: 7px; }
.meta-item i { color: var(--primary); font-size: 14px; }
.meta-item:last-child { margin-right: 0; }

/* ===== Article Content ===== */
.article-section { padding: 24px 0 var(--space-section); }
.article-content-card {
  max-width: 860px; margin: 0 auto;
  background: var(--card-bg);
  border-radius: 20px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  padding: 48px 56px;
}
.prose {
  font-size: 16px; line-height: 1.8; color: var(--text);
  max-width: 760px; margin: 0 auto;
}
.prose > *:first-child { margin-top: 0; }
.prose h2 {
  font-size: 26px; font-weight: 700; color: var(--text);
  margin: 40px 0 16px; padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
}
.prose h3 { font-size: 20px; font-weight: 600; margin: 32px 0 12px; color: var(--text); }
.prose h4 { font-size: 17px; font-weight: 600; margin: 24px 0 8px; color: var(--text); }
.prose p { margin: 0 0 20px; color: var(--text); }
.prose a { color: var(--primary); text-decoration: underline; text-underline-offset: 4px; }
.prose a:hover { color: var(--accent); }
.prose img {
  border-radius: 16px; margin: 24px auto; border: 1px solid var(--border-light);
  max-width: 100%; height: auto;
}
.prose ul, .prose ol { margin: 0 0 20px 0; padding-left: 1.5em; }
.prose li { margin-bottom: 8px; line-height: 1.8; }
.prose strong { font-weight: 700; color: var(--text); }
.prose em { font-style: italic; }
.prose blockquote {
  border-left: 4px solid var(--accent);
  background: rgba(249,115,22,0.06);
  padding: 16px 20px; border-radius: 0 12px 12px 0;
  margin: 24px 0; color: var(--text-muted);
}
.prose blockquote p { margin: 0; color: inherit; }
.prose code {
  background: rgba(15,118,110,0.08); color: var(--primary-dark);
  padding: 2px 6px; border-radius: 4px; font-size: 0.9em;
  font-family: var(--font-mono);
}
.prose pre {
  background: var(--primary-dark); color: #f5f5f4; padding: 20px;
  border-radius: var(--radius-md); overflow-x: auto; margin: 24px 0;
  font-size: 14px; line-height: 1.6;
}
.prose pre code { background: none; color: inherit; padding: 0; border-radius: 0; }
.prose table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 15px; }
.prose th {
  background: rgba(15,118,110,0.07); color: var(--primary-dark);
  font-weight: 600; text-align: left; padding: 10px 14px;
  border: 1px solid var(--border-light);
}
.prose td { padding: 10px 14px; border: 1px solid var(--border-light); }
.prose hr { border: none; border-top: 1px solid var(--border-light); margin: 32px 0; }

/* ===== Article Bottom ===== */
.article-bottom { max-width: 760px; margin: 36px auto 0; padding-top: 28px; border-top: 1px solid var(--border-light); }
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.tag-pill {
  display: inline-block;
  background: rgba(15,118,110,0.08); color: var(--primary);
  font-size: 13px; font-weight: 500; padding: 5px 14px; border-radius: 999px;
}
.article-back-nav { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

/* ===== Not Found ===== */
.not-found-card { text-align: center; padding: 48px 24px; }
.not-found-icon {
  width: 72px; height: 72px; background: rgba(15,118,110,0.08);
  border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
  font-size: 28px; color: var(--primary); margin-bottom: 20px;
}
.not-found-card h2 { font-size: 26px; font-weight: 700; margin-bottom: 12px; color: var(--text); }
.not-found-card p { color: var(--text-muted); margin-bottom: 24px; font-size: 15px; }

/* ===== Related Section ===== */
.related-section { background: var(--bg); padding: var(--space-section) 0; }
.section-head { text-align: center; margin-bottom: 44px; }
.section-eyebrow {
  display: inline-block; background: rgba(15,118,110,0.08); color: var(--primary);
  font-size: 13px; font-weight: 600; padding: 4px 14px; border-radius: 999px;
  margin-bottom: 12px;
}
.section-head h2 { font-size: 30px; font-weight: 800; color: var(--text); letter-spacing: -0.02em; margin-bottom: 10px; }
.section-head p { color: var(--text-muted); font-size: 15px; }
.related-grid { row-gap: 24px; }
.related-card {
  display: flex; flex-direction: column;
  background: #fff; border-radius: 20px; overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  height: 100%;
  color: var(--text);
}
.related-card:hover {
  box-shadow: var(--shadow-lg); transform: translateY(-4px); color: var(--text);
}
.related-card-img { position: relative; overflow: hidden; }
.related-card-img img {
  width: 100%; height: 150px; object-fit: cover; transition: transform 0.4s ease;
}
.related-card:hover .related-card-img img { transform: scale(1.05); }
.related-card-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.related-card-body .card-tag {
  display: inline-block;
  background: rgba(15,118,110,0.08); color: var(--primary);
  font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 999px;
  margin-bottom: 10px; align-self: flex-start;
}
.related-card-body h3 { font-size: 17px; font-weight: 700; line-height: 1.4; margin-bottom: 8px; color: var(--text); }
.related-card-body p { font-size: 14px; color: var(--text-muted); line-height: 1.6; flex: 1; }
.card-footer {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 14px; font-size: 13px; color: var(--text-muted);
}
.card-footer .link-arrow {
  width: 28px; height: 28px; border-radius: 50%;
  background: rgba(15,118,110,0.08); color: var(--primary);
  display: inline-flex; align-items: center; justify-content: center;
  transition: all 0.25s ease;
}
.related-card:hover .link-arrow { background: var(--accent); color: #fff; }
.related-actions { text-align: center; margin-top: 40px; }

/* ===== CTA Section ===== */
.article-cta-section {
  background: var(--primary-dark);
  padding: 72px 0; position: relative; overflow: hidden;
}
.article-cta-section::before {
  content: ''; position: absolute; right: -60px; top: -80px;
  width: 220px; height: 220px; border-radius: 50%;
  background: rgba(255,255,255,0.04);
}
.article-cta-section::after {
  content: ''; position: absolute; left: 10%; bottom: -60px;
  width: 140px; height: 140px; border-radius: 50%;
  background: rgba(249,115,22,0.08);
}
.cta-inner { text-align: center; position: relative; z-index: 1; max-width: 600px; margin: 0 auto; }
.cta-icon {
  width: 64px; height: 64px; border-radius: 50%;
  background: rgba(249,115,22,0.18); color: var(--accent);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 20px;
}
.cta-inner h2 { color: #fff; font-size: 30px; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 14px; }
.cta-inner p { color: rgba(255,255,255,0.75); font-size: 16px; margin-bottom: 30px; line-height: 1.7; }

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.75);
  padding: 72px 0 32px;
  font-size: 14px;
}
.footer-grid { row-gap: 32px; }
.footer-brand .footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand .footer-logo .logo-icon { background: var(--accent); color: #fff; }
.footer-brand .footer-logo span:last-child { color: #fff; font-size: 18px; font-weight: 700; }
.footer-brand p { margin: 0; line-height: 1.8; color: rgba(255,255,255,0.6); font-size: 14px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 16px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: rgba(255,255,255,0.6); transition: color 0.2s ease; font-size: 14px; }
.footer-col ul a:hover { color: var(--accent); }
.footer-contact li { display: flex; align-items: center; gap: 8px; color: rgba(255,255,255,0.6); font-size: 14px; }
.footer-contact li i { color: var(--accent); width: 16px; text-align: center; font-size: 13px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 48px; padding-top: 24px; text-align: center;
}
.footer-bottom p { margin: 0; color: rgba(255,255,255,0.5); font-size: 13px; }

/* ===== Back To Top ===== */
.back-top {
  position: fixed; bottom: 28px; right: 28px; z-index: 180;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 16px; box-shadow: var(--shadow-lg);
  opacity: 0; pointer-events: none; transform: translateY(12px);
  transition: all 0.3s ease;
}
.back-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-top:hover { background: var(--primary-dark); color: #fff; }

/* ===== Responsive ===== */
@media (max-width: 1023.98px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-cta { display: none; }
  .article-title { font-size: 30px; }
  .article-content-card { padding: 36px 32px; }
  :root { --space-section: 72px; }
}
@media (max-width: 767.98px) {
  :root { --space-section: 56px; }
  .article-title { font-size: 26px; }
  .article-content-card { padding: 28px 20px; border-radius: 16px; }
  .article-meta { gap: 12px; font-size: 13px; }
  .search-input-wrap { position: fixed; top: 60px; left: 16px; right: 16px; width: auto; transform: none; border-radius: 14px; }
  .search-input-wrap.open { transform: none; }
  .back-top { bottom: 16px; right: 16px; width: 38px; height: 38px; font-size: 14px; }
  .prose { font-size: 15px; }
  .prose h2 { font-size: 22px; }
  .prose h3 { font-size: 18px; }
  .related-actions .btn { width: 100%; }
  .article-back-nav .btn { flex: 1; }
}
@media (max-width: 520px) {
  .brand-name { font-size: 16px; }
  .header-inner { gap: 10px; }
  .article-tag-row { gap: 6px; }
  .article-category-tag, .article-source-tag { font-size: 12px; padding: 4px 10px; }
  .article-hero-inner { padding: 0 4px; }
  .article-content-card { padding: 20px 16px; }
  .footer-col { margin-bottom: 12px; }
}

/* roulang page: category2 */
:root {
  --primary: #0F766E;
  --primary-dark: #134E4A;
  --accent: #F97316;
  --accent-dark: #EA580C;
  --bg: #FAF9F6;
  --white: #FFFFFF;
  --text: #1C1917;
  --text-secondary: #6B7280;
  --border: #E7E5E4;
  --card-border: #F0EFED;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 3px rgba(28,25,23,0.06), 0 4px 12px rgba(28,25,23,0.04);
  --shadow-md: 0 4px 12px rgba(28,25,23,0.08), 0 12px 32px rgba(28,25,23,0.06);
  --container-max: 1200px;
  --header-h: 64px;
  --spacing-section: 96px;
  --spacing-tablet: 64px;
  --spacing-mobile: 48px;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Consolas", monospace;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }

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

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  transition: all 0.25s ease;
  border: 1.5px solid transparent;
  white-space: nowrap;
}
.btn:focus-visible {
  outline: 3px solid rgba(15,118,110,0.3);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--accent-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(249,115,22,0.3);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-outline {
  border-color: var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background: rgba(15,118,110,0.06);
  color: var(--primary);
  transform: translateY(-2px);
}
.btn-outline:active {
  transform: translateY(0);
}
.btn-lg { padding: 15px 38px; font-size: 16px; }

/* ===== Header 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  height: var(--header-h);
  background: rgba(250,249,246,0.92);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.header-left {
  display: flex;
  align-items: center;
  gap: 28px;
  min-width: 0;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-size: 19px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}
.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 900;
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: nowrap;
}
.nav-links a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  position: relative;
  transition: background 0.2s, color 0.2s;
}
.nav-links a:hover {
  background: rgba(15,118,110,0.06);
  color: var(--primary);
}
.nav-links a.active {
  color: var(--primary);
  font-weight: 600;
  background: rgba(15,118,110,0.08);
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 3px;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.search-toggle, .hamburger {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  font-size: 16px;
  transition: background 0.2s, color 0.2s;
  border: 1px solid var(--border);
  background: var(--white);
}
.search-toggle:hover, .hamburger:hover {
  background: rgba(15,118,110,0.06);
  color: var(--primary);
}
.hamburger { display: none; }
.header-cta { white-space: nowrap; }

/* ===== 面包屑 ===== */
.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #F1EFEA;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  color: var(--text-secondary);
}
.breadcrumb a { color: var(--primary); font-weight: 500; }
.breadcrumb .sep { color: #A8A29E; }

/* ===== Page Hero ===== */
.page-hero {
  padding: 64px 0 56px;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  position: relative;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(250,249,246,0.88);
}
.page-hero .container {
  position: relative;
  z-index: 1;
}
.hero-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.hero-title {
  font-size: 42px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 14px 0 16px;
}
.hero-title .keyword { color: var(--primary); }
.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 620px;
  line-height: 1.7;
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--white);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  font-size: 14px;
  color: var(--text);
  box-shadow: var(--shadow-sm);
}
.hero-badge i { color: var(--accent); font-size: 14px; }
.hero-badge strong {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  color: var(--primary);
}

/* ===== Section 通用 ===== */
.section {
  padding: var(--spacing-section) 0;
}
.section-alt { background: var(--white); }
.section-header {
  margin-bottom: 44px;
  max-width: 720px;
}
.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(15,118,110,0.08);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}
.section-title {
  font-size: 30px;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 12px;
}
.section-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== 分类简介 ===== */
.intro-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 60px;
  align-items: center;
}
.intro-copy p {
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.85;
}
.intro-copy p:last-child { margin-bottom: 0; }
.intro-copy strong { color: var(--primary); font-weight: 700; }
.intro-image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--card-border);
}
.intro-image-wrap img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}
.intro-image-float {
  position: absolute;
  right: 16px;
  bottom: 16px;
  background: var(--primary-dark);
  color: #fff;
  border-radius: 14px;
  padding: 12px 18px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-md);
}
.intro-image-float i { color: var(--accent); font-size: 18px; }

/* ===== 内链卡片 ===== */
.link-cards {
  background: var(--white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.link-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.link-card {
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.link-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.link-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(15,118,110,0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}
.link-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}
.link-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 18px;
}
.link-card .card-link {
  font-weight: 600;
  font-size: 15px;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s;
}
.link-card .card-link:hover { gap: 10px; }
.link-card-featured {
  background: var(--primary-dark);
  border-color: transparent;
}
.link-card-featured .link-card-icon {
  background: rgba(255,255,255,0.14);
  color: var(--accent);
}
.link-card-featured h3 { color: #fff; }
.link-card-featured p { color: rgba(255,255,255,0.75); }
.link-card-featured .card-link { color: var(--accent); }

/* ===== 数据 / 要点 ===== */
.data-card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}
.data-card {
  background: var(--white);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.data-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.data-card-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 10px;
}
.data-card-value {
  font-size: 36px;
  font-weight: 900;
  color: var(--primary);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  margin-bottom: 6px;
}
.data-card-desc {
  font-size: 14px;
  color: var(--text-secondary);
}
.feature-list-wrap {
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  box-shadow: var(--shadow-sm);
}
.feature-list-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.feature-list-title i { color: var(--accent); }
.feature-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 40px;
}
.feature-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 15px;
  color: var(--text);
  line-height: 1.7;
}
.feature-list li i {
  color: var(--primary);
  margin-top: 4px;
  flex-shrink: 0;
  width: 18px;
  text-align: center;
}

/* ===== FAQ ===== */
.faq-card {
  background: var(--white);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 12px 32px;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:last-child { border-bottom: none; }
.faq-question {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 22px 0;
  cursor: pointer;
  user-select: none;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: color 0.2s;
}
.faq-question:hover { color: var(--primary); }
.faq-q-icon {
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}
.faq-toggle {
  margin-left: auto;
  font-size: 18px;
  color: var(--text-secondary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item.open .faq-toggle { transform: rotate(45deg); color: var(--accent); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-answer p {
  padding: 0 0 22px 46px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
  background: var(--primary-dark);
  position: relative;
  overflow: hidden;
}
.cta-section::after {
  content: '';
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: rgba(15,118,110,0.35);
  top: -160px;
  right: -120px;
}
.cta-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
}
.cta-title {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}
.cta-desc {
  color: rgba(255,255,255,0.78);
  font-size: 16px;
  max-width: 560px;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.8);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 4fr 3fr 2fr 3fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}
.footer-logo .logo-icon {
  background: var(--accent);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255,255,255,0.68);
  max-width: 360px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  transition: color 0.2s;
}
.footer-col ul a:hover { color: var(--accent); }
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,0.65);
}
.footer-contact i {
  width: 18px;
  color: var(--accent);
  text-align: center;
}
.footer-bottom {
  padding: 22px 0;
  text-align: center;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}

/* ===== 滚动恢复 top ===== */
.scroll-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 90;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}
.scroll-top.visible { opacity: 1; visibility: visible; }
.scroll-top:hover { background: var(--primary-dark); color: var(--accent); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  :root { --spacing-section: 64px; }
  .header-left { gap: 14px; }
  .nav-links { gap: 2px; }
  .nav-links a { padding: 7px 10px; font-size: 14px; }
  .intro-grid { gap: 36px; }
  .data-card-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--primary-dark);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 8px;
    z-index: 998;
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    color: rgba(255,255,255,0.9);
    width: 100%;
    font-size: 16px;
    padding: 10px 12px;
    border-radius: 10px;
  }
  .nav-links a:hover {
    background: rgba(255,255,255,0.08);
    color: #fff;
  }
  .nav-links a.active {
    background: rgba(249,115,22,0.2);
    color: var(--accent);
  }
  .nav-links a.active::after { display: none; }
  .hamburger { display: flex; }
  .header-cta { display: none; }
  .hero-title { font-size: 34px; }
  .intro-grid { grid-template-columns: 1fr; }
  .link-card-grid { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: 1fr; }
  .cta-inner { grid-template-columns: 1fr; text-align: center; }
  .cta-desc { margin: 0 auto; }
  .cta-actions { justify-content: center; }
}
@media (max-width: 640px) {
  :root { --spacing-section: 48px; }
  .page-hero { padding: 48px 0 40px; }
  .hero-title { font-size: 30px; }
  .hero-subtitle { font-size: 16px; }
  .section-title { font-size: 24px; }
  .data-card-grid { grid-template-columns: 1fr; }
  .faq-card { padding: 8px 20px; }
  .faq-answer p { padding-left: 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { padding: 20px 0; }
  .btn-lg { padding: 13px 30px; font-size: 15px; }
  .intro-image-float { font-size: 13px; padding: 10px 14px; }
}

/* roulang page: category3 */
:root {
  --primary: #0F766E;
  --primary-dark: #134E4A;
  --accent: #F97316;
  --accent-dark: #EA580C;
  --bg: #FAF9F6;
  --white: #FFFFFF;
  --text: #1C1917;
  --text-muted: #6B7280;
  --border: #E7E5E4;
  --card-border: #F0EFED;
  --shadow-sm: 0 1px 3px rgba(28,25,23,0.06), 0 4px 12px rgba(28,25,23,0.04);
  --shadow-md: 0 4px 12px rgba(28,25,23,0.08), 0 12px 32px rgba(28,25,23,0.06);
  --radius-lg: 20px;
  --radius-sm: 12px;
  --radius-pill: 999px;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-num: "JetBrains Mono", "SF Mono", Consolas, monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

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

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 64px;
  background: rgba(250, 249, 246, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(28, 25, 23, 0.08);
}

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

.header-left {
  display: flex;
  align-items: center;
  gap: 32px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.logo a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 18px;
  color: var(--text);
  letter-spacing: -0.02em;
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: var(--white);
  border-radius: 10px;
  font-weight: 900;
  font-size: 18px;
}

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

.nav-links a {
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: var(--radius-pill);
  position: relative;
  transition: all 0.2s ease;
}

.nav-links a:hover {
  color: var(--primary);
  background: rgba(15, 118, 110, 0.06);
}

.nav-links a.active {
  color: var(--primary);
  font-weight: 700;
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

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

.search-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--white);
  color: var(--text);
  cursor: pointer;
  transition: all 0.2s ease;
}

.search-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  line-height: 1.4;
}

.btn:focus-visible {
  outline: 3px solid rgba(15, 118, 110, 0.3);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 2px 8px rgba(249, 115, 22, 0.3);
}

.btn-primary:hover {
  background: var(--accent-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(249, 115, 22, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(249, 115, 22, 0.3);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background: rgba(15, 118, 110, 0.05);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(15, 118, 110, 0.12);
}

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

.btn-lg {
  padding: 14px 36px;
  font-size: 16px;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* Mobile drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 300px;
  max-width: 85vw;
  background: var(--primary-dark);
  z-index: 200;
  padding: 32px 24px;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
}

.mobile-drawer.open {
  transform: translateX(0);
}

.mobile-drawer .drawer-logo {
  color: var(--white);
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 32px;
}

.mobile-drawer .drawer-logo .logo-icon {
  background: var(--accent);
}

.mobile-drawer a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 16px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-drawer a.active {
  color: var(--accent);
  font-weight: 700;
}

.mobile-drawer .drawer-btn {
  margin-top: auto;
  background: var(--accent);
  color: var(--white);
  text-align: center;
  border: none;
  padding: 14px 24px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  margin-bottom: 16px;
}

.drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(19, 78, 74, 0.5);
  z-index: 190;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.drawer-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

/* ===== Page Hero ===== */
.page-hero {
  padding: 64px 0 80px;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(15, 118, 110, 0.06);
}

.page-hero::after {
  content: "";
  position: absolute;
  bottom: 20px;
  left: 30px;
  width: 120px;
  height: 120px;
  border-radius: 24px;
  background: rgba(249, 115, 22, 0.05);
  transform: rotate(15deg);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: rgba(15, 118, 110, 0.1);
  color: var(--primary);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}

.page-hero h1 {
  font-size: 42px;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 20px;
}

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

.hero-subtitle {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-trust {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.trust-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-muted);
}

.trust-item i {
  color: var(--primary);
}

.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.hero-visual img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(19, 78, 74, 0.2), transparent 60%);
  border-radius: var(--radius-lg);
}

.float-badge {
  position: absolute;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--white);
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  box-shadow: var(--shadow-md);
}

.float-badge i {
  color: var(--accent);
}

.float-badge.badge-1 {
  top: 24px;
  left: 24px;
}

.float-badge.badge-2 {
  bottom: 24px;
  right: 24px;
  background: var(--primary);
  color: var(--white);
}

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

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

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-header h2 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== Safety Features ===== */
.safety-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.safety-card {
  background: var(--white);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.safety-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.safety-card .card-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: rgba(15, 118, 110, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.safety-card .card-icon i {
  font-size: 20px;
  color: var(--primary);
}

.safety-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
}

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

.safety-card:nth-child(1),
.safety-card:nth-child(4) {
  border-left: 3px solid var(--accent);
}

/* ===== Intro Section ===== */
.intro-section {
  padding: 80px 0;
  background: var(--white);
}

.intro-wrap {
  display: flex;
  gap: 48px;
  align-items: center;
}

.intro-media {
  flex: 0 0 42%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.intro-media img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
}

.intro-content {
  flex: 1;
}

.intro-content .eyebrow {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.intro-content h2 {
  font-size: 30px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.intro-content p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.intro-content .intro-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.intro-content .intro-list li {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 15px;
  color: var(--text);
}

.intro-content .intro-list li i {
  color: var(--primary);
  margin-top: 4px;
  font-size: 14px;
}

/* ===== Related Cards ===== */
.related-section {
  padding: 80px 0;
}

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

.related-card {
  background: var(--white);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.related-card .card-media {
  height: 180px;
  overflow: hidden;
}

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

.related-card:hover .card-media img {
  transform: scale(1.05);
}

.related-card .card-body {
  padding: 24px;
}

.related-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
}

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

.related-card .card-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.related-card .card-link:hover {
  gap: 10px;
  transition: gap 0.2s ease;
}

/* ===== Key Points ===== */
.keypoints-section {
  background: var(--primary-dark);
  padding: 80px 0;
  color: var(--white);
}

.keypoints-section .section-header h2 {
  color: var(--white);
}

.keypoints-section .section-header p {
  color: rgba(255, 255, 255, 0.7);
}

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

.keypoints-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  gap: 16px;
  transition: background 0.3s ease;
}

.keypoints-card:hover {
  background: rgba(255, 255, 255, 0.1);
}

.keypoints-card .kp-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.keypoints-card .kp-icon i {
  color: var(--white);
  font-size: 18px;
}

.keypoints-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 6px;
}

.keypoints-card p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.7;
}

/* ===== Steps ===== */
.steps-section {
  padding: 80px 0;
}

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

.steps-wrap::before {
  content: "";
  position: absolute;
  top: 34px;
  left: 8%;
  right: 8%;
  height: 2px;
  background: var(--border);
}

.step-item {
  text-align: center;
  position: relative;
  background: var(--white);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

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

.step-number {
  width: 52px;
  height: 52px;
  margin: 0 auto 16px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  position: relative;
  z-index: 2;
  box-shadow: 0 0 0 4px var(--bg);
}

.step-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

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

/* ===== Scenarios ===== */
.scenarios-section {
  background: var(--white);
  padding: 80px 0;
}

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

.scenario-card {
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  background: var(--bg);
  transition: all 0.3s ease;
}

.scenario-card:hover {
  border-color: rgba(15, 118, 110, 0.3);
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.scenario-card .scenario-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(15, 118, 110, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.scenario-card .scenario-icon i {
  font-size: 22px;
  color: var(--primary);
}

.scenario-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}

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

.scenario-card .tag-list {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.scenario-card .tag-list span {
  padding: 4px 10px;
  background: rgba(15, 118, 110, 0.08);
  color: var(--primary);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 80px 0;
}

.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease;
  overflow: hidden;
}

.faq-item:hover {
  box-shadow: var(--shadow-md);
}

.faq-question {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
}

.faq-question .q-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  background: rgba(15, 118, 110, 0.1);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
}

.faq-question .q-arrow {
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  font-size: 18px;
  color: var(--text-muted);
  transition: transform 0.3s ease;
}

.faq-item.active .q-arrow {
  transform: rotate(45deg);
  color: var(--accent);
}

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

.faq-answer-inner {
  padding: 0 24px 20px 70px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: 80px 0;
  background: var(--white);
}

.cta-card {
  background: var(--primary-dark);
  border-radius: 24px;
  overflow: hidden;
  position: relative;
  display: flex;
  box-shadow: var(--shadow-md);
}

.cta-left {
  flex: 0 0 55%;
  padding: 48px;
  color: var(--white);
}

.cta-left h2 {
  font-size: 30px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
}

.cta-left p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.8;
  margin-bottom: 24px;
}

.cta-contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.cta-contact-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
}

.cta-contact-list li i {
  color: var(--accent);
}

.cta-right {
  flex: 1;
  padding: 48px;
  background: var(--white);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.cta-right h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text);
}

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

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  transition: all 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
  background: var(--white);
}

.form-group textarea {
  resize: vertical;
  min-height: 90px;
}

.form-submit {
  width: 100%;
  margin-top: 8px;
}

.form-note {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 10px;
  text-align: center;
}

.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: var(--white);
  padding: 64px 0 24px;
}

.footer-grid {
  margin-bottom: 40px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 14px;
  color: var(--white);
}

.footer-brand .footer-logo .logo-icon {
  background: var(--accent);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.65);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  transition: all 0.2s ease;
}

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

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
}

.footer-contact li i {
  color: var(--accent);
  width: 18px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

/* ===== Responsive ===== */
@media screen and (max-width: 1024px) {
  .safety-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-wrap {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

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

  .page-hero h1 {
    font-size: 36px;
  }

  .hero-visual img {
    height: 340px;
  }

  .intro-wrap {
    flex-direction: column;
    gap: 32px;
  }

  .intro-media {
    flex: 1;
    width: 100%;
  }

  .cta-card {
    flex-direction: column;
  }

  .cta-left,
  .cta-right {
    flex: 1;
    padding: 40px;
  }
}

@media screen and (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .search-toggle {
    display: none;
  }

  .header-right .btn {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .section {
    padding: 56px 0;
  }

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

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

  .hero-visual img {
    height: 280px;
  }

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

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

  .steps-wrap {
    grid-template-columns: 1fr;
  }

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

  .cta-left,
  .cta-right {
    padding: 28px;
  }

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

  .footer-grid .columns {
    margin-bottom: 32px;
  }
}

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

  .page-hero h1 {
    font-size: 28px;
  }

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

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

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

  .float-badge {
    padding: 8px 14px;
    font-size: 12px;
  }

  .safety-card {
    padding: 20px;
  }

  .keypoints-card {
    padding: 20px;
    flex-direction: column;
  }

  .faq-question {
    padding: 16px;
    gap: 10px;
    font-size: 14px;
  }

  .faq-answer-inner {
    padding: 0 16px 16px 56px;
  }
}