/* roulang page: index */
:root {
  --primary: #16181A;
  --accent: #A07B4F;
  --accent-hover: #B58E5E;
  --bg: #F5F3F0;
  --bg-secondary: #EFECE7;
  --text: #3D3A36;
  --text-light: #8B857D;
  --border: rgba(22,24,26,0.10);
  --white: #FFFFFF;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", monospace;
  --radius: 4px;
  --shadow: 0 2px 14px rgba(22,24,26,0.07);
  --transition: all 0.25s cubic-bezier(0.2, 0.6, 0.3, 1);
}
*, *::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); font-size: 16px; line-height: 1.8; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button { font-family: inherit; cursor: pointer; background: none; border: none; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
section { position: relative; }

input, select, textarea { font-family: inherit; font-size: 15px; width: 100%; }
input:focus, select:focus, textarea:focus { outline: none; }
table { width: 100%; border-collapse: collapse; }

/* 顶部信息条 */
.top-info-bar { background: var(--primary); color: rgba(255,255,255,0.85); height: 40px; font-size: 13px; width: 100%; }
.top-info-inner { display: flex; justify-content: space-between; align-items: center; height: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.domain-text { font-family: var(--font-mono); color: var(--accent); font-size: 13px; letter-spacing: 0.02em; }
.top-info-links { display: flex; align-items: center; gap: 22px; }
.top-info-links a { color: rgba(255,255,255,0.72); font-size: 13px; line-height: 1.2; }
.top-info-links a:hover { color: #fff; }
.btn-mini { border: 1px solid var(--accent); color: #fff !important; padding: 4px 16px; border-radius: 3px; font-size: 12px !important; transition: var(--transition); }
.btn-mini:hover { background: var(--accent); }

/* 主导航 */
.main-header { position: sticky; top: 0; z-index: 100; background: var(--white); border-bottom: 1px solid rgba(22,24,26,0.08); backdrop-filter: saturate(1.2); }
.header-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; height: 72px; gap: 36px; }
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-icon { width: 40px; height: 40px; background: var(--accent); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 22px; font-weight: 800; border-radius: 3px; line-height: 1; }
.brand-text { font-size: 21px; line-height: 1.2; color: var(--primary); letter-spacing: -0.01em; }
.brand-text strong { font-weight: 800; }
.brand-text .thin { font-weight: 300; }
.brand-text small { display: block; font-size: 11px; color: var(--text-light); font-family: var(--font-mono); line-height: 1; margin-top: 3px; letter-spacing: 0.03em; }
.main-nav { flex: 1; }
.nav-list { display: flex; gap: 4px; }
.nav-link { padding: 9px 16px; font-size: 15px; font-weight: 500; color: var(--text); border-radius: var(--radius); position: relative; display: inline-block; }
.nav-link:hover { color: var(--accent); }
.nav-link.active { font-weight: 600; color: var(--primary); }
.nav-link.active::after { content: ''; position: absolute; bottom: 0; left: 16px; right: 16px; height: 2px; background: var(--accent); }
.btn { display: inline-flex; align-items: center; justify-content: center; height: 44px; padding: 0 26px; font-size: 15px; font-weight: 500; border-radius: var(--radius); transition: var(--transition); border: 1px solid transparent; line-height: 1; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); }
.btn-outline { border: 1px solid var(--accent); color: var(--accent); background: transparent; }
.btn-outline:hover { background: var(--accent); color: #fff; }
.btn-text-link { color: var(--text); font-size: 15px; border-bottom: 1px solid var(--border); padding-bottom: 2px; }
.btn-text-link:hover { color: var(--accent); border-color: var(--accent); }
.btn-header { height: 40px; padding: 0 20px; font-size: 14px; flex-shrink: 0; }
.nav-toggle { display: none; font-size: 24px; color: var(--primary); margin-left: auto; }

/* Hero */
.hero-section { position: relative; padding: 88px 0 72px; background: var(--bg); border-bottom: 1px solid var(--border); overflow: hidden; }
.hero-section::before { content: ''; position: absolute; top: 0; right: 0; width: 55%; height: 100%; background: repeating-linear-gradient(to right, rgba(22,24,26,0.035) 0, rgba(22,24,26,0.035) 1px, transparent 1px, transparent 44px); pointer-events: none; z-index: 0; }
.hero-inner { position: relative; z-index: 2; min-height: 500px; display: flex; align-items: center; }
.hero-content { padding-right: 40px; }
.hero-content h1 { font-size: 52px; line-height: 1.3; font-weight: 700; color: var(--primary); margin-bottom: 18px; letter-spacing: 0.01em; animation: fadeUp 0.4s cubic-bezier(0.2, 0.6, 0.3, 1) both; }
.hero-content .hero-sub { font-size: 17px; font-weight: 500; color: var(--text); margin-bottom: 12px; animation: fadeUp 0.4s cubic-bezier(0.2, 0.6, 0.3, 1) 0.08s both; }
.hero-content .hero-desc { font-size: 15px; color: var(--text-light); max-width: 460px; margin-bottom: 32px; animation: fadeUp 0.4s cubic-bezier(0.2, 0.6, 0.3, 1) 0.16s both; }
.hero-actions { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; animation: fadeUp 0.4s cubic-bezier(0.2, 0.6, 0.3, 1) 0.24s both; }
.hero-visual { position: relative; animation: heroZoom 1.2s cubic-bezier(0.2, 0.6, 0.3, 1) both; }
.hero-visual img { width: 100%; max-height: 420px; object-fit: cover; border-radius: 6px; border: 1px solid var(--border); box-shadow: var(--shadow); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes heroZoom { from { opacity: 0.7; transform: scale(1.02); } to { opacity: 1; transform: scale(1); } }

/* 数据信任条 */
.data-strip { background: var(--bg-secondary); padding: 28px 0; border-bottom: 1px solid var(--border); }
.data-grid { display: flex; justify-content: space-between; max-width: 1000px; margin: 0 auto; flex-wrap: wrap; gap: 24px; }
.data-item { text-align: center; flex: 1; min-width: 140px; }
.data-num { font-size: 38px; font-weight: 800; color: var(--accent); font-family: var(--font-sans); line-height: 1.2; }
.data-num span { font-size: 18px; font-weight: 600; }
.data-label { font-size: 13px; color: var(--text-light); margin-top: 4px; letter-spacing: 0.05em; }

/* 优惠阶梯 */
.tiers-section { padding: 88px 0 0; }
.section-head { margin-bottom: 40px; }
.section-head .section-title { font-size: 30px; font-weight: 700; color: var(--primary); position: relative; padding-bottom: 14px; }
.section-head .section-title::after { content: ''; position: absolute; bottom: 0; left: 0; width: 36px; height: 3px; background: var(--accent); }
.section-head .section-sub { font-size: 15px; color: var(--text-light); margin-top: 8px; max-width: 640px; }
.tier-card { height: 100%; border-radius: 4px; padding: 36px 30px; display: flex; flex-direction: column; position: relative; transition: var(--transition); }
.tier-card:hover { transform: translateY(-2px); }
.tier-card.tier-basic { background: var(--white); border: 1px solid var(--border); }
.tier-card.tier-basic:hover { border-color: var(--accent); }
.tier-card.tier-pro { background: var(--primary); border: 1px solid var(--accent); color: #fff; }
.tier-card.tier-pro:hover { border-color: var(--accent-hover); }
.tier-card.tier-pro .tier-name, .tier-card.tier-pro .tier-scene { color: #fff; }
.tier-card.tier-pro .tier-feature { color: rgba(255,255,255,0.8); }
.tier-card.tier-pro .tier-price { color: var(--accent); }
.tier-card.tier-max { background: var(--white); border: 1px solid var(--border); }
.tier-card.tier-max:hover { border-color: var(--accent); }
.tier-card.tier-max::before { content: '尊享'; position: absolute; top: 24px; right: -30px; background: var(--accent); color: #fff; font-size: 12px; padding: 6px 34px; transform: rotate(45deg); letter-spacing: 0.1em; }
.tier-badge { display: inline-block; background: var(--accent); color: #fff; font-size: 12px; padding: 4px 12px; border-radius: 2px; font-weight: 600; align-self: flex-start; margin-bottom: 14px; letter-spacing: 0.06em; }
.tier-name { font-size: 22px; font-weight: 700; color: var(--primary); margin-bottom: 6px; }
.tier-scene { font-size: 14px; color: var(--text-light); margin-bottom: 22px; }
.tier-list { flex: 1; margin-bottom: 28px; }
.tier-list li { padding: 7px 0 7px 24px; position: relative; font-size: 14px; }
.tier-list li::before { content: ''; position: absolute; left: 0; top: 14px; width: 8px; height: 8px; border: 1px solid var(--accent); transform: rotate(45deg); }
.tier-card.tier-pro .tier-list li::before { border-color: var(--accent-hover); }
.tier-price { font-size: 14px; color: var(--text-light); border-top: 1px solid var(--border); padding-top: 16px; }
.tier-card.tier-pro .tier-price { border-color: rgba(255,255,255,0.15); }

/* 套餐对比 */
.comparison-section { padding: 88px 0 0; max-width: 1200px; margin: 0 auto; }
.compare-wrapper { overflow-x: auto; border: 1px solid var(--border); border-radius: 6px; background: var(--white); }
.compare-table { width: 100%; min-width: 760px; }
.compare-table th { background: var(--primary); color: #fff; padding: 18px 20px; font-size: 15px; font-weight: 600; text-align: left; border-bottom: 2px solid var(--accent); }
.compare-table th:first-child { background: #1E2124; }
.compare-table th.highlight-col { border-left: 2px solid var(--accent); }
.compare-table td { padding: 16px 20px; font-size: 14px; border-bottom: 1px solid var(--border); }
.compare-table tr:last-child td { border-bottom: none; }
.compare-table tbody tr:hover { background: #F0EDE9; }
.compare-table td.highlight-col { border-left: 2px solid var(--accent); background: rgba(160,123,79,0.03); }
.compare-table td:first-child { font-weight: 500; color: var(--primary); background: #FAF8F5; }

/* 限时入口 */
.entry-window { background: var(--primary); color: #fff; padding: 76px 0; margin-top: 88px; text-align: center; }
.entry-window .entry-title { font-size: 34px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.entry-window .entry-sub { font-size: 15px; color: rgba(255,255,255,0.6); margin-bottom: 34px; }
.countdown-wrap { display: flex; justify-content: center; gap: 16px; margin-bottom: 36px; }
.countdown-item { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15); border-radius: 6px; padding: 16px 20px; min-width: 88px; display: flex; flex-direction: column; align-items: center; }
.countdown-item .cd-num { font-family: var(--font-mono); font-size: 40px; font-weight: 700; color: var(--accent); line-height: 1.1; }
.countdown-item .cd-label { font-size: 12px; color: rgba(255,255,255,0.5); margin-top: 6px; letter-spacing: 0.1em; }
.countdown-sep { font-size: 32px; color: var(--accent); align-self: center; line-height: 1; padding-bottom: 18px; }
.entry-window .btn-entry { display: inline-flex; height: 52px; padding: 0 42px; border: 1px solid var(--accent); color: var(--accent); background: transparent; font-size: 16px; font-weight: 500; border-radius: 4px; align-items: center; justify-content: center; transition: var(--transition); }
.entry-window .btn-entry:hover { background: var(--accent); color: #fff; }
.entry-window .entry-note { font-size: 12px; color: rgba(255,255,255,0.4); margin-top: 16px; font-family: var(--font-mono); }

/* 最新动态 */
.news-section { padding: 88px 0 0; }
.news-head { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 28px; }
.news-head .section-title { font-size: 28px; font-weight: 700; color: var(--primary); padding-bottom: 12px; position: relative; }
.news-head .section-title::after { content: ''; position: absolute; bottom: 0; left: 0; width: 32px; height: 3px; background: var(--accent); }
.view-all-link { font-size: 14px; color: var(--text-light); border-bottom: 1px solid var(--border); padding-bottom: 2px; }
.view-all-link:hover { color: var(--accent); border-color: var(--accent); }
.feature-card { background: var(--white); border: 1px solid var(--border); border-radius: 4px; overflow: hidden; height: 100%; display: flex; flex-direction: column; transition: var(--transition); }
.feature-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }
.feature-card img { width: 100%; height: 180px; object-fit: cover; }
.feature-body { padding: 22px 24px; flex: 1; display: flex; flex-direction: column; }
.news-cat { font-size: 12px; color: var(--accent); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 6px; }
.feature-body h3 { font-size: 18px; font-weight: 600; color: var(--primary); line-height: 1.5; margin-bottom: 8px; }
.feature-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; margin-bottom: 12px; }
.news-time { font-size: 13px; color: var(--text-light); font-family: var(--font-mono); margin-top: auto; }
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-list-item { background: var(--white); border: 1px solid var(--border); border-radius: 4px; padding: 18px 20px; transition: var(--transition); display: block; }
.news-list-item:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }
.news-list-item h4 { font-size: 15px; font-weight: 600; color: var(--primary); line-height: 1.5; margin-bottom: 4px; }
.news-list-item p { font-size: 13px; color: var(--text-light); line-height: 1.6; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-bottom: 6px; }
.news-meta { font-size: 12px; color: var(--text-light); font-family: var(--font-mono); }
.empty-state { background: var(--white); border: 1px dashed var(--border); border-radius: 6px; min-height: 200px; display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--text-light); font-size: 15px; }
.empty-state i { font-size: 36px; margin-bottom: 12px; color: var(--border); }

/* 咨询表单 */
.contact-section { padding: 88px 0; }
.contact-box { background: var(--white); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.contact-left { background: var(--primary); color: #fff; padding: 40px 32px; height: 100%; }
.contact-left h3 { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.contact-left .contact-desc { font-size: 14px; color: rgba(255,255,255,0.6); margin-bottom: 28px; }
.contact-item { display: flex; gap: 14px; margin-bottom: 18px; font-size: 15px; }
.contact-item i { color: var(--accent); font-size: 16px; margin-top: 4px; width: 20px; text-align: center; }
.contact-item span { color: rgba(255,255,255,0.85); }
.contact-faq-links { margin-top: 30px; border-top: 1px solid rgba(255,255,255,0.12); padding-top: 20px; }
.contact-faq-links a { display: block; font-size: 14px; color: rgba(255,255,255,0.6); padding: 5px 0; }
.contact-faq-links a:hover { color: var(--accent-hover); }
.contact-right { padding: 40px 36px; }
.form-group { margin-bottom: 22px; }
.form-group label { font-size: 14px; color: var(--text); font-weight: 500; display: block; margin-bottom: 6px; }
.form-control { height: 48px; background: #FBF9F7; border: none; border-bottom: 1px solid var(--border); padding: 0 12px; font-size: 15px; color: var(--text); transition: var(--transition); border-radius: 0 0 2px 2px; }
.form-control:focus { border-bottom-color: var(--accent); background: #F7F4F0; box-shadow: 0 2px 4px rgba(160,123,79,0.1); }
textarea.form-control { height: 110px; padding: 12px; resize: vertical; }
.form-submit { width: 100%; height: 48px; background: var(--primary); color: #fff; font-size: 15px; font-weight: 500; border: none; border-radius: 4px; transition: var(--transition); }
.form-submit:hover { background: var(--accent); }

/* 页脚 */
.site-footer { background: var(--primary); color: rgba(255,255,255,0.7); padding: 64px 0 0; }
.footer-grid { display: flex; gap: 50px; flex-wrap: wrap; padding-bottom: 48px; }
.footer-brand { flex: 1.4; min-width: 240px; }
.footer-brand .brand-bottom { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.footer-brand .brand-bottom small { font-size: 12px; color: rgba(255,255,255,0.4); display: block; font-family: var(--font-mono); margin-top: 4px; font-weight: 400; }
.footer-brand .footer-tagline { font-size: 14px; color: rgba(255,255,255,0.5); max-width: 280px; line-height: 1.7; }
.footer-col { flex: 1; min-width: 140px; }
.footer-col h4 { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 16px; letter-spacing: 0.05em; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 13px; color: rgba(255,255,255,0.5); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent-hover); }
.footer-contact { flex: 1.2; min-width: 200px; }
.footer-contact h4 { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-contact p { font-size: 13px; color: rgba(255,255,255,0.5); margin-bottom: 8px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 18px 0; text-align: center; }
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.35); }
.footer-bottom .footer-domain { color: rgba(255,255,255,0.45); font-family: var(--font-mono); font-size: 12px; margin-top: 4px; }

/* 移动端导航覆盖层 */
.mobile-nav-overlay { display: none; position: fixed; inset: 0; background: var(--white); z-index: 9999; flex-direction: column; padding: 32px 32px 48px; overflow-y: auto; }
.mobile-nav-overlay.open { display: flex; }
.mobile-nav-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 32px; }
.mobile-nav-close { font-size: 28px; color: var(--primary); }
.mobile-nav-links { flex: 1; }
.mobile-nav-links a { display: block; font-size: 20px; font-weight: 500; color: var(--primary); padding: 14px 0; border-bottom: 1px solid var(--border); }
.mobile-nav-links a:hover { color: var(--accent); }
.mobile-nav-links a.active { color: var(--accent); font-weight: 700; }
.mobile-nav-contact { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border); }
.mobile-nav-contact p { font-size: 14px; color: var(--text-light); margin-bottom: 6px; }
body.no-scroll { overflow: hidden; }

/* 响应式 */
@media screen and (max-width: 1024px) {
  .container { padding: 0 20px; }
  .header-inner { padding: 0 20px; gap: 20px; }
  .nav-link { padding: 9px 10px; font-size: 14px; }
  .hero-content h1 { font-size: 42px; }
  .hero-section { padding: 60px 0; }
  .hero-inner { min-height: 420px; }
}
@media screen and (max-width: 768px) {
  .top-info-bar .top-info-links a:not(.btn-mini) { display: none; }
  .top-info-links { gap: 12px; }
  .main-nav { display: none; }
  .btn-header { display: none; }
  .nav-toggle { display: block; }
  .hero-section { padding: 44px 0 36px; }
  .hero-inner { min-height: auto; }
  .hero-content { padding-right: 0; }
  .hero-content h1 { font-size: 36px; line-height: 1.35; }
  .hero-visual { margin-top: 28px; }
  .hero-actions { gap: 16px; }
  .data-grid { gap: 18px; }
  .data-num { font-size: 30px; }
  .section-head .section-title { font-size: 24px; }
  .tiers-section { padding-top: 60px; }
  .comparison-section { padding-top: 60px; }
  .entry-window { padding: 56px 0; margin-top: 60px; }
  .entry-window .entry-title { font-size: 26px; }
  .countdown-item { min-width: 68px; padding: 12px 12px; }
  .countdown-item .cd-num { font-size: 28px; }
  .news-section { padding-top: 60px; }
  .contact-section { padding-top: 60px; }
  .contact-left { padding: 28px 24px; }
  .contact-right { padding: 28px 20px; }
  .footer-grid { gap: 32px; }
}
@media screen and (max-width: 520px) {
  .domain-text { font-size: 11px; }
  .brand-text { font-size: 18px; }
  .brand-icon { width: 34px; height: 34px; font-size: 18px; }
  .hero-content h1 { font-size: 30px; }
  .hero-content .hero-sub { font-size: 15px; }
  .tier-card { padding: 28px 22px; }
  .compare-table th, .compare-table td { padding: 12px 12px; font-size: 13px; }
  .countdown-wrap { gap: 8px; }
  .countdown-item { min-width: 58px; padding: 10px 8px; }
  .countdown-item .cd-num { font-size: 22px; }
  .countdown-sep { font-size: 22px; }
  .form-control { height: 44px; }
}

/* roulang page: category1 */
:root {
      --ink: #16181A;
      --gold: #A07B4F;
      --gold-bright: #B58E5E;
      --bg: #F5F3F0;
      --bg-alt: #EFECE7;
      --text: #3D3A36;
      --muted: #8B857D;
      --line: rgba(22, 24, 26, 0.10);
      --white: #FFFFFF;
      --success: #3E6B4F;
      --radius: 4px;
      --shadow-sm: 0 1px 3px rgba(22, 24, 26, 0.06);
      --shadow-md: 0 4px 16px rgba(22, 24, 26, 0.07);
      --font-main: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      --font-mono: "JetBrains Mono", "SFMono-Regular", monospace;
      --ease: cubic-bezier(0.2, 0.6, 0.3, 1);
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font-main);
      font-size: 16px;
      line-height: 1.8;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: color 0.25s var(--ease); }
    img { max-width: 100%; height: auto; display: block; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5 { color: var(--ink); font-weight: 700; line-height: 1.4; }

    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
    .section-pad { padding: 88px 0; }

    /* ===== 顶部信息条 ===== */
    .topbar {
      background: var(--ink);
      height: 40px;
      display: flex;
      align-items: center;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.70);
    }
    .topbar-inner {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .topbar-domain {
      font-family: var(--font-mono);
      color: var(--gold);
      letter-spacing: 0.02em;
      font-size: 12px;
    }
    .topbar-links { display: flex; align-items: center; gap: 20px; }
    .topbar-links a { color: rgba(255,255,255,0.72); font-size: 13px; }
    .topbar-links a:hover { color: var(--gold-bright); }
    .topbar-btn {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border: 1px solid rgba(160,123,79,0.6);
      color: var(--gold-bright) !important;
      padding: 2px 14px;
      border-radius: 2px;
      font-size: 12px;
      transition: all 0.25s var(--ease);
    }
    .topbar-btn:hover { background: rgba(160,123,79,0.12); }

    /* ===== 主导航 ===== */
    .main-header {
      background: var(--white);
      border-bottom: 1px solid var(--line);
      position: sticky;
      top: 0;
      z-index: 100;
    }
    .header-inner {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .brand { display: flex; align-items: center; gap: 12px; }
    .brand-icon {
      width: 40px;
      height: 40px;
      background: var(--ink);
      color: var(--gold-bright);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 20px;
      border-radius: 3px;
      letter-spacing: -1px;
      flex-shrink: 0;
    }
    .brand-text { line-height: 1.2; display: flex; align-items: baseline; gap: 4px; flex-wrap: wrap; }
    .brand-text strong {
      font-size: 24px;
      color: var(--ink);
      font-weight: 800;
      letter-spacing: 0.02em;
    }
    .brand-text .thin {
      font-size: 18px;
      font-weight: 300;
      color: var(--ink);
      letter-spacing: 0.04em;
    }
    .brand-text small {
      font-size: 11px;
      color: var(--muted);
      font-family: var(--font-mono);
      margin-left: 8px;
      letter-spacing: 0.02em;
      flex-basis: 100%;
    }
    .main-nav { display: flex; align-items: center; }
    .nav-list { display: flex; align-items: center; gap: 4px; list-style: none; }
    .nav-link {
      display: block;
      padding: 8px 16px;
      font-size: 15px;
      color: var(--text);
      font-weight: 500;
      border-bottom: 2px solid transparent;
      transition: all 0.25s var(--ease);
    }
    .nav-link:hover { color: var(--ink); border-bottom-color: rgba(160,123,79,0.4); }
    .nav-link.active { color: var(--ink); font-weight: 600; border-bottom-color: var(--gold); }
    .btn-header { margin-left: 16px; }
    .nav-toggle {
      display: none;
      background: none;
      border: 1px solid var(--line);
      border-radius: 4px;
      width: 42px;
      height: 42px;
      font-size: 18px;
      color: var(--ink);
      cursor: pointer;
      transition: all 0.25s var(--ease);
    }
    .nav-toggle:hover { border-color: var(--gold); color: var(--gold); }

    /* ===== 通用按钮 ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 44px;
      padding: 0 28px;
      border-radius: 3px;
      font-size: 15px;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.25s var(--ease);
      border: 1px solid transparent;
      white-space: nowrap;
    }
    .btn-primary {
      background: var(--ink);
      color: var(--white);
      border-color: var(--ink);
    }
    .btn-primary:hover { background: var(--gold); border-color: var(--gold); color: var(--white); }
    .btn-gold { background: var(--gold); color: var(--white); border-color: var(--gold); }
    .btn-gold:hover { background: var(--gold-bright); border-color: var(--gold-bright); transform: translateY(-1px); }
    .btn-outline {
      background: transparent;
      color: var(--gold);
      border-color: var(--gold);
    }
    .btn-outline:hover { background: rgba(160,123,79,0.08); border-color: var(--gold-bright); }
    .btn-text-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 15px;
      color: var(--ink);
      border-bottom: 2px solid rgba(160,123,79,0.4);
      padding-bottom: 2px;
      font-weight: 500;
    }
    .btn-text-link:hover { border-bottom-color: var(--gold); color: var(--gold); }
    .btn-lg { height: 52px; padding: 0 36px; font-size: 16px; }
    .btn:active { transform: translateY(1px); }

    /* ===== Hero ===== */
    .page-hero {
      position: relative;
      background: var(--bg);
      padding: 96px 0 88px;
      border-bottom: 1px solid var(--line);
      overflow: hidden;
    }
    .page-hero::before {
      content: "";
      position: absolute;
      top: 0;
      right: 0;
      width: 52%;
      height: 100%;
      background-image: url('/assets/images/backpic/back-1.png');
      background-size: cover;
      background-position: center left;
      opacity: 0.22;
      mask-image: linear-gradient(to left, rgba(0,0,0,0.8), transparent);
      -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,0.8), transparent);
    }
    .page-hero::after {
      content: "";
      position: absolute;
      top: 0;
      right: 0;
      width: 52%;
      height: 100%;
      background-image: repeating-linear-gradient(90deg, rgba(22,24,26,0.04) 0px, rgba(22,24,26,0.04) 1px, transparent 1px, transparent 44px);
    }
    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.05fr 0.95fr;
      gap: 64px;
      align-items: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 500;
      color: var(--gold);
      background: rgba(160,123,79,0.06);
      border: 1px solid rgba(160,123,79,0.25);
      padding: 4px 16px;
      border-radius: 2px;
      margin-bottom: 24px;
      letter-spacing: 0.04em;
    }
    .hero-badge::before { content: ""; width: 6px; height: 6px; background: var(--gold); border-radius: 50%; }
    .hero-title {
      font-size: 52px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: 0.01em;
      margin-bottom: 20px;
      color: var(--ink);
    }
    .hero-title .gold { color: var(--gold); }
    .hero-subtitle {
      font-size: 19px;
      color: var(--text);
      font-weight: 500;
      margin-bottom: 16px;
      letter-spacing: 0.02em;
    }
    .hero-desc {
      font-size: 16px;
      color: var(--muted);
      max-width: 520px;
      margin-bottom: 32px;
      line-height: 1.8;
    }
    .hero-actions { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
    .hero-media {
      position: relative;
      z-index: 2;
    }
    .hero-media img {
      width: 100%;
      border-radius: 6px;
      box-shadow: 0 12px 32px rgba(22,24,26,0.10);
      border: 1px solid var(--line);
    }
    .hero-media::after {
      content: "";
      position: absolute;
      bottom: -16px;
      right: -16px;
      width: 140px;
      height: 140px;
      border-right: 2px solid var(--gold);
      border-bottom: 2px solid var(--gold);
      border-radius: 0 0 8px 0;
      opacity: 0.35;
      z-index: -1;
    }

    /* ===== 数据信任条 ===== */
    .stats-strip {
      background: var(--white);
      border-bottom: 1px solid var(--line);
      padding: 48px 0;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
    }
    .stat-item { text-align: center; padding: 8px 0; }
    .stat-num {
      font-size: 40px;
      font-weight: 800;
      color: var(--gold);
      line-height: 1.2;
      font-family: var(--font-main);
      letter-spacing: 0.01em;
    }
    .stat-num span { font-size: 22px; font-weight: 700; margin-left: 2px; }
    .stat-label {
      font-size: 14px;
      color: var(--muted);
      margin-top: 6px;
      letter-spacing: 0.04em;
    }
    .stat-divider { border-left: 1px solid var(--line); }

    /* ===== 分类页标题区 ===== */
    .page-title-bar {
      background: var(--white);
      padding: 64px 0 48px;
      border-bottom: 1px solid var(--line);
    }
    .page-title-bar .crumb {
      font-size: 13px;
      color: var(--muted);
      margin-bottom: 16px;
      display: flex;
      gap: 8px;
      align-items: center;
    }
    .page-title-bar .crumb a:hover { color: var(--gold); }
    .page-title-bar h1 {
      font-size: 36px;
      font-weight: 700;
      line-height: 1.35;
      margin-bottom: 12px;
    }
    .page-title-bar .page-sub {
      font-size: 16px;
      color: var(--muted);
      max-width: 640px;
    }

    /* ===== 要点网格 ===== */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .feature-card {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 32px 24px;
      transition: all 0.25s var(--ease);
    }
    .feature-card:hover {
      transform: translateY(-2px);
      border-color: var(--gold);
      box-shadow: var(--shadow-sm);
    }
    .feature-icon {
      width: 48px;
      height: 48px;
      border-radius: 3px;
      border: 1px solid rgba(160,123,79,0.3);
      background: rgba(160,123,79,0.05);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--gold);
      font-size: 18px;
      margin-bottom: 20px;
    }
    .feature-card h3 {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 10px;
      color: var(--ink);
    }
    .feature-card p {
      font-size: 14px;
      color: var(--muted);
      line-height: 1.7;
    }

    /* ===== Section 标题 ===== */
    .section-head { margin-bottom: 48px; }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 500;
      color: var(--gold);
      letter-spacing: 0.06em;
      text-transform: uppercase;
      margin-bottom: 12px;
    }
    .section-tag::before { content: ""; width: 24px; height: 1px; background: var(--gold); }
    .section-head h2 {
      font-size: 32px;
      font-weight: 700;
      color: var(--ink);
      line-height: 1.3;
      margin-bottom: 12px;
    }
    .section-head .section-desc {
      font-size: 16px;
      color: var(--muted);
      max-width: 640px;
    }

    /* ===== 图文交替流程 ===== */
    .detail-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 72px;
      align-items: center;
      margin-bottom: 88px;
    }
    .detail-row:last-child { margin-bottom: 0; }
    .detail-row.flip .detail-media { order: -1; }
    .detail-num {
      font-family: var(--font-mono);
      font-size: 14px;
      color: var(--gold);
      letter-spacing: 0.04em;
      margin-bottom: 10px;
      display: block;
    }
    .detail-text h3 {
      font-size: 26px;
      font-weight: 700;
      margin-bottom: 16px;
      line-height: 1.4;
      color: var(--ink);
    }
    .detail-text p {
      font-size: 16px;
      color: var(--text);
      line-height: 1.8;
      margin-bottom: 16px;
    }
    .detail-text ul li {
      font-size: 15px;
      color: var(--text);
      padding: 6px 0;
      display: flex;
      gap: 10px;
      align-items: baseline;
    }
    .detail-text ul li::before {
      content: "";
      width: 6px;
      height: 6px;
      border: 1px solid var(--gold);
      border-radius: 50%;
      flex-shrink: 0;
      margin-top: 10px;
    }
    .detail-media {
      position: relative;
    }
    .detail-media img {
      width: 100%;
      border-radius: 4px;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-md);
    }
    .detail-media::after {
      content: "";
      position: absolute;
      top: -12px;
      left: -12px;
      width: 56px;
      height: 56px;
      border-top: 2px solid var(--gold);
      border-left: 2px solid var(--gold);
      border-radius: 4px 0 0 0;
      opacity: 0.3;
    }

    /* ===== FAQ ===== */
    .faq-section { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .faq-list { max-width: 860px; margin: 0 auto; }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item:first-child { border-top: 1px solid var(--line); }
    .faq-q {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 24px 0;
      cursor: pointer;
      gap: 24px;
      border: none;
      background: none;
      width: 100%;
      text-align: left;
      font-size: 18px;
      font-weight: 600;
      color: var(--ink);
      font-family: var(--font-main);
      transition: color 0.25s var(--ease);
    }
    .faq-q:hover { color: var(--gold); }
    .faq-icon {
      width: 24px;
      height: 24px;
      flex-shrink: 0;
      position: relative;
    }
    .faq-icon::before, .faq-icon::after {
      content: "";
      position: absolute;
      background: var(--gold);
      transition: transform 0.25s var(--ease);
      border-radius: 1px;
    }
    .faq-icon::before { top: 11px; left: 4px; width: 16px; height: 2px; }
    .faq-icon::after { top: 4px; left: 11px; width: 2px; height: 16px; }
    .faq-item.open .faq-icon::after { transform: scaleY(0); }
    .faq-a {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s var(--ease);
    }
    .faq-a-inner {
      padding: 0 0 24px;
      font-size: 15px;
      color: var(--muted);
      line-height: 1.8;
      max-width: 720px;
    }

    /* ===== CTA ===== */
    .cta-block {
      background: var(--ink);
      padding: 88px 0;
      position: relative;
      overflow: hidden;
    }
    .cta-block::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: repeating-linear-gradient(90deg, rgba(255,255,255,0.02) 0px, rgba(255,255,255,0.02) 1px, transparent 1px, transparent 60px);
    }
    .cta-inner {
      text-align: center;
      position: relative;
      z-index: 2;
    }
    .cta-inner h2 {
      color: var(--white);
      font-size: 36px;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .cta-inner p {
      color: rgba(255,255,255,0.65);
      font-size: 16px;
      margin-bottom: 36px;
    }
    .cta-inner .btn-outline {
      border-color: rgba(160,123,79,0.8);
      color: var(--gold-bright);
      font-size: 16px;
      height: 52px;
      padding: 0 40px;
    }
    .cta-inner .btn-outline:hover { background: rgba(160,123,79,0.15); }
    .cta-note {
      font-size: 12px;
      color: rgba(255,255,255,0.35);
      margin-top: 20px;
      font-family: var(--font-mono);
      letter-spacing: 0.02em;
    }

    /* ===== 联系/咨询区 ===== */
    .contact-section { padding: 88px 0; }
    .contact-grid {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 64px;
    }
    .contact-info h3 {
      font-size: 26px;
      font-weight: 700;
      margin-bottom: 24px;
      color: var(--ink);
    }
    .contact-info-list li {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      margin-bottom: 20px;
      font-size: 15px;
      color: var(--text);
    }
    .contact-info-list .cicon {
      width: 40px;
      height: 40px;
      border-radius: 3px;
      border: 1px solid var(--line);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--gold);
      font-size: 15px;
      flex-shrink: 0;
      background: var(--white);
    }
    .contact-form-wrap {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 6px;
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }
    .form-group { margin-bottom: 24px; }
    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 500;
      color: var(--ink);
      margin-bottom: 6px;
      letter-spacing: 0.02em;
    }
    .form-input {
      width: 100%;
      height: 48px;
      border: none;
      border-bottom: 1px solid rgba(22,24,26,0.18);
      background: var(--white);
      font-size: 15px;
      color: var(--ink);
      outline: none;
      padding: 0 2px;
      transition: all 0.25s var(--ease);
      font-family: var(--font-main);
    }
    .form-input:focus {
      border-bottom-color: var(--gold);
      background: #FBF9F7;
    }
    textarea.form-input {
      height: auto;
      min-height: 96px;
      padding: 12px 2px;
      resize: vertical;
    }
    .form-submit {
      background: var(--ink);
      color: var(--white);
      border: none;
      height: 48px;
      padding: 0 40px;
      border-radius: 3px;
      font-size: 15px;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.25s var(--ease);
      font-family: var(--font-main);
    }
    .form-submit:hover { background: var(--gold); }

    /* ===== 页脚 ===== */
    .site-footer {
      background: var(--ink);
      padding: 64px 0 0;
      color: rgba(255,255,255,0.6);
    }
    .site-footer .container { max-width: 1200px; }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr 1.2fr;
      gap: 40px;
      padding-bottom: 48px;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .brand-bottom {
      display: flex;
      align-items: baseline;
      gap: 4px;
      font-size: 24px;
      color: var(--white);
      font-weight: 300;
      margin-bottom: 8px;
    }
    .brand-bottom strong { font-weight: 800; font-size: 26px; }
    .brand-bottom small {
      font-size: 12px;
      color: rgba(255,255,255,0.4);
      font-family: var(--font-mono);
      margin-left: 8px;
      letter-spacing: 0.02em;
    }
    .footer-tagline {
      font-size: 14px;
      color: rgba(255,255,255,0.45);
      line-height: 1.6;
      max-width: 220px;
    }
    .site-footer h4 {
      font-size: 15px;
      color: var(--white);
      font-weight: 600;
      margin-bottom: 16px;
      letter-spacing: 0.03em;
    }
    .site-footer .footer-col ul li { margin-bottom: 10px; }
    .site-footer .footer-col ul li a {
      font-size: 14px;
      color: rgba(255,255,255,0.5);
    }
    .site-footer .footer-col ul li a:hover { color: var(--gold-bright); }
    .footer-contact p {
      font-size: 14px;
      color: rgba(255,255,255,0.5);
      margin-bottom: 8px;
    }
    .footer-bottom {
      padding: 24px 0;
      text-align: center;
      font-size: 13px;
      color: rgba(255,255,255,0.35);
    }
    .footer-bottom .footer-domain {
      font-family: var(--font-mono);
      margin-top: 4px;
      font-size: 12px;
      color: rgba(255,255,255,0.22);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .header-inner { height: 64px; }
      .nav-toggle { display: flex; align-items: center; justify-content: center; }
      .main-nav {
        position: fixed;
        top: 0;
        right: 0;
        width: 100%;
        height: 100%;
        background: var(--white);
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        padding: 88px 32px 32px;
        z-index: 999;
        display: none;
      }
      .main-nav.open { display: flex; }
      .main-nav .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        margin-bottom: 32px;
      }
      .main-nav .nav-link { font-size: 20px; padding: 12px 0; }
      .main-nav .btn-header { margin-left: 0; margin-top: 8px; }
      .hero-grid { grid-template-columns: 1fr; gap: 40px; }
      .hero-title { font-size: 40px; }
      .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
      .stat-divider { border-left: none; }
      .feature-grid { grid-template-columns: repeat(2, 1fr); }
      .detail-row { grid-template-columns: 1fr; gap: 40px; margin-bottom: 64px; }
      .detail-row.flip .detail-media { order: 0; }
      .contact-grid { grid-template-columns: 1fr; gap: 40px; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
      .page-hero { padding: 64px 0 56px; }
      .section-pad { padding: 64px 0; }
    }
    @media (max-width: 768px) {
      .topbar-links { display: none; }
      .topbar-domain { font-size: 11px; }
      .hero-title { font-size: 32px; }
      .hero-subtitle { font-size: 16px; }
      .hero-desc { font-size: 15px; }
      .feature-grid { grid-template-columns: 1fr; }
      .detail-text h3 { font-size: 22px; }
      .stats-grid { grid-template-columns: 1fr 1fr; }
      .stat-num { font-size: 32px; }
      .section-head h2 { font-size: 26px; }
      .cta-inner h2 { font-size: 28px; }
      .contact-form-wrap { padding: 28px 20px; }
      .footer-grid { grid-template-columns: 1fr; gap: 24px; }
      .page-title-bar h1 { font-size: 28px; }
    }
    @media (max-width: 520px) {
      .container { padding: 0 16px; }
      .hero-actions { flex-direction: column; align-items: flex-start; }
      .btn-lg { width: 100%; }
    }

/* roulang page: article */
:root {
  --color-primary: #16181A;
  --color-accent: #A07B4F;
  --color-accent-light: #B58E5E;
  --color-bg: #F5F3F0;
  --color-bg-secondary: #EFECE7;
  --color-text: #3D3A36;
  --color-text-title: #16181A;
  --color-text-small: #8B857D;
  --color-border: rgba(22, 24, 26, 0.10);
  --radius: 4px;
  --shadow-sm: 0 1px 3px rgba(22, 24, 26, 0.06);
  --shadow-md: 0 4px 16px rgba(22, 24, 26, 0.08);
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Menlo", monospace;
  --container-width: 1200px;
  --spacing-section: 88px;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease;
}
button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}
.btn {
  display: inline-block;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.2, 0.6, 0.3, 1);
  height: 44px;
  line-height: 42px;
  padding: 0 24px;
  vertical-align: middle;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-light);
  border-color: var(--color-accent-light);
}
.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.btn-outline:hover {
  background: var(--color-accent);
  color: #fff;
}
.btn-sm {
  height: 36px;
  line-height: 34px;
  padding: 0 16px;
  font-size: 13px;
}
.top-info-bar {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.75);
  font-size: 13px;
  height: 40px;
  line-height: 40px;
}
.top-info-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}
.top-info-bar .domain-text {
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-size: 12px;
  letter-spacing: 0.03em;
}
.top-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.top-links a:not(.btn-sm) {
  color: rgba(255, 255, 255, 0.7);
  padding: 0 12px;
  transition: color 0.25s;
}
.top-links a:not(.btn-sm):hover {
  color: #fff;
}
.top-links .btn-sm {
  display: inline-block;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  border-radius: 2px;
  padding: 3px 14px;
  line-height: 22px;
  font-size: 12px;
  margin-left: 8px;
  height: auto;
  background: transparent;
  cursor: pointer;
  transition: all 0.25s;
}
.top-links .btn-sm:hover {
  background: var(--color-accent);
  color: #fff;
}
@media (max-width: 768px) {
  .top-info-bar .top-links {
    display: none;
  }
  .top-info-bar .container {
    justify-content: center;
  }
}
.main-header {
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: saturate(1.2);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-icon {
  width: 40px;
  height: 40px;
  background: var(--color-accent);
  color: #fff;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -1px;
  flex-shrink: 0;
}
.brand-text {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  font-size: 20px;
  color: var(--color-text-title);
  line-height: 1.1;
}
.brand-text strong {
  font-weight: 800;
  margin-right: 2px;
}
.brand-text .thin {
  font-weight: 300;
}
.brand-text small {
  display: block;
  width: 100%;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-small);
  letter-spacing: 0.05em;
  margin-top: 2px;
}
.main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}
.nav-list {
  display: flex;
  list-style: none;
  align-items: center;
}
.nav-link {
  padding: 8px 16px;
  font-size: 15px;
  color: var(--color-text);
  border-bottom: 2px solid transparent;
  transition: all 0.25s;
  display: inline-block;
}
.nav-link:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}
.nav-link.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  font-weight: 500;
}
.btn-header {
  height: 40px;
  line-height: 38px;
  padding: 0 20px;
  margin-left: 16px;
  flex-shrink: 0;
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: 18px;
  cursor: pointer;
  color: var(--color-text-title);
  transition: border-color 0.25s;
  flex-shrink: 0;
}
.nav-toggle:hover {
  border-color: var(--color-accent);
}
@media (max-width: 1024px) {
  .header-inner {
    padding: 0 20px;
  }
  .nav-link {
    padding: 8px 10px;
    font-size: 14px;
  }
  .btn-header {
    padding: 0 14px;
  }
}
@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: #fff;
    z-index: 200;
    flex-direction: column;
    justify-content: flex-start;
    padding: 96px 40px 40px;
    transition: right 0.3s ease;
  }
  .main-nav.is-open {
    display: flex;
    right: 0;
  }
  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    width: 100%;
  }
  .nav-link {
    font-size: 20px;
    padding: 12px 0;
    display: block;
    line-height: 56px;
    border-bottom: none;
  }
  .nav-link:hover,
  .nav-link.active {
    border-bottom: none;
    color: var(--color-accent);
  }
  .btn-header {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
  body.nav-open {
    overflow: hidden;
  }
  .header-inner {
    height: 64px;
  }
}
.breadcrumb-bar {
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
  font-size: 14px;
  color: var(--color-text-small);
}
.breadcrumb-bar .container {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}
.breadcrumb-bar a {
  color: var(--color-text);
}
.breadcrumb-bar a:hover {
  color: var(--color-accent);
}
.breadcrumb-bar .sep {
  margin: 0 10px;
  color: rgba(22, 24, 26, 0.25);
}
.breadcrumb-bar .current {
  color: var(--color-accent);
}
@media (max-width: 768px) {
  .breadcrumb-bar {
    padding: 12px 0;
    font-size: 13px;
  }
}
.article-main {
  padding: 48px 0 80px;
  min-height: 60vh;
}
.article-body {
  max-width: 760px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 48px 56px;
  box-shadow: var(--shadow-sm);
}
.article-body h1 {
  font-size: 36px;
  line-height: 1.4;
  font-weight: 600;
  color: var(--color-text-title);
  margin-bottom: 20px;
  letter-spacing: 0.01em;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 14px;
  color: var(--color-text-small);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 24px;
  margin-bottom: 32px;
}
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-meta .meta-sep {
  opacity: 0.4;
}
.article-content {
  font-size: 17px;
  line-height: 1.8;
  color: var(--color-text);
  word-wrap: break-word;
}
.article-content p {
  margin: 0 0 1.2em;
}
.article-content h2 {
  font-size: 26px;
  font-weight: 600;
  color: var(--color-text-title);
  border-left: 4px solid var(--color-accent);
  padding-left: 16px;
  margin: 40px 0 16px;
  line-height: 1.4;
}
.article-content h3 {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text-title);
  margin: 32px 0 12px;
}
.article-content h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-title);
  margin: 24px 0 10px;
}
.article-content blockquote {
  border-left: 2px solid var(--color-primary);
  background: var(--color-bg-secondary);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 4px 4px 0;
  color: var(--color-text);
}
.article-content ul,
.article-content ol {
  padding-left: 1.5em;
  margin: 0 0 1.2em;
}
.article-content li {
  margin-bottom: 0.5em;
}
.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  border: 1px solid var(--color-border);
  margin: 24px 0;
}
.article-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.article-content a:hover {
  color: var(--color-accent-light);
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}
.article-content th,
.article-content td {
  border: 1px solid var(--color-border);
  padding: 12px 16px;
  text-align: left;
}
.article-content th {
  background: var(--color-bg-secondary);
  font-weight: 600;
}
.article-content code {
  background: var(--color-bg-secondary);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.9em;
}
.article-content pre {
  background: var(--color-primary);
  color: #f0ece7;
  padding: 20px;
  border-radius: 4px;
  overflow-x: auto;
  margin: 24px 0;
}
.article-content pre code {
  background: none;
  color: inherit;
  padding: 0;
}
@media (max-width: 768px) {
  .article-body {
    padding: 32px 20px;
    border-radius: 4px;
  }
  .article-body h1 {
    font-size: 28px;
  }
  .article-meta {
    flex-direction: column;
    gap: 10px;
    padding-bottom: 18px;
    margin-bottom: 24px;
  }
  .article-content {
    font-size: 16px;
  }
  .article-content h2 {
    font-size: 22px;
  }
  .article-content h3 {
    font-size: 19px;
  }
}
.article-not-found {
  text-align: center;
  padding: 80px 20px;
  max-width: 760px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 6px;
}
.article-not-found h1 {
  font-size: 32px;
  color: var(--color-text-title);
  margin-bottom: 16px;
  font-weight: 600;
}
.article-not-found p {
  color: var(--color-text-small);
  margin-bottom: 32px;
  font-size: 16px;
}
.article-pager {
  max-width: 760px;
  margin: 32px auto 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
}
.pager-left {
  display: flex;
  gap: 12px;
}
.pager-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: 14px;
  color: var(--color-text);
  background: #fff;
  transition: all 0.25s;
  cursor: pointer;
}
.pager-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.pager-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
.back-list {
  font-size: 14px;
  color: var(--color-text-small);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.25s;
}
.back-list:hover {
  color: var(--color-accent);
}
@media (max-width: 768px) {
  .article-pager {
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
  }
  .pager-left {
    width: 100%;
  }
  .pager-btn {
    flex: 1;
    justify-content: center;
  }
}
.related-section {
  padding: 56px 0 88px;
  background: #fff;
  border-top: 1px solid var(--color-border);
}
.related-section .section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 32px;
}
.related-section .section-title {
  font-size: 26px;
  font-weight: 600;
  color: var(--color-text-title);
}
.related-section .section-more {
  font-size: 14px;
  color: var(--color-text-small);
  transition: color 0.25s;
}
.related-section .section-more:hover {
  color: var(--color-accent);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.2, 0.6, 0.3, 1), border-color 0.3s;
}
.related-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
}
.related-card a {
  display: block;
}
.related-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-bottom: 1px solid var(--color-border);
}
.related-card-body {
  padding: 16px 20px 20px;
}
.related-card-body h3 {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-title);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card-body .date {
  font-size: 13px;
  color: var(--color-text-small);
  font-family: var(--font-mono);
}
@media (max-width: 1024px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .related-section {
    padding: 40px 0 64px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .related-section .section-title {
    font-size: 22px;
  }
}
.site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.7);
  padding: 56px 0 24px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand .brand-bottom {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: 22px;
  color: #fff;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.brand-bottom strong {
  font-weight: 800;
}
.brand-bottom small {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-accent);
  width: 100%;
  margin-top: 2px;
}
.footer-tagline {
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
  line-height: 1.6;
}
.footer-col h4,
.footer-contact h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}
.footer-col ul {
  list-style: none;
}
.footer-col ul li {
  margin-bottom: 8px;
}
.footer-col ul li a {
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.25s;
}
.footer-col ul li a:hover {
  color: var(--color-accent-light);
}
.footer-contact p {
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 8px;
  line-height: 1.6;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}
.footer-domain {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
}
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

/* roulang page: category2 */
:root {
      --ink: #16181A;
      --copper: #A07B4F;
      --copper-bright: #B58E5E;
      --bg: #F5F3F0;
      --bg-soft: #EFECE7;
      --surface: #FFFFFF;
      --text: #3D3A36;
      --muted: #8B857D;
      --border: rgba(22, 24, 26, 0.10);
      --green: #3E6B4F;
      --radius: 4px;
      --shadow: 0 10px 30px rgba(22, 24, 26, 0.06);
      --shadow-sm: 0 4px 14px rgba(22, 24, 26, 0.05);
      --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
      --transition: 0.25s cubic-bezier(0.2, 0.6, 0.3, 1);
      --container-w: 1200px;
    }

    /* ===== Base Reset ===== */
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-sans);
      font-size: 16px;
      line-height: 1.8;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      display: block;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--transition), border-color var(--transition), background var(--transition);
    }
    button {
      font-family: inherit;
      border: none;
      cursor: pointer;
      background: none;
    }
    input, textarea, select {
      font-family: inherit;
      font-size: 16px;
      color: var(--text);
    }
    ul, ol {
      list-style: none;
    }
    .container {
      width: 100%;
      max-width: var(--container-w);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* ===== Topbar ===== */
    .topbar {
      background: var(--ink);
      height: 40px;
      color: #fff;
      font-size: 13px;
      display: flex;
      align-items: center;
    }
    .topbar-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .topbar-domain {
      font-family: var(--font-mono);
      color: var(--copper-bright);
      letter-spacing: 0.04em;
      font-size: 13px;
    }
    .topbar-links {
      display: flex;
      align-items: center;
      gap: 22px;
    }
    .topbar-links a {
      color: rgba(255, 255, 255, 0.82);
      font-size: 13px;
      transition: color var(--transition);
    }
    .topbar-links a:hover {
      color: var(--copper-bright);
    }
    .topbar-btn {
      border: 1px solid var(--copper);
      color: #fff !important;
      padding: 3px 14px;
      border-radius: 3px;
      font-size: 12px;
      background: transparent;
      transition: background var(--transition), border-color var(--transition);
    }
    .topbar-btn:hover {
      background: var(--copper);
      border-color: var(--copper);
    }

    /* ===== Header / Nav ===== */
    .main-header {
      background: var(--surface);
      border-bottom: 1px solid var(--border);
      position: sticky;
      top: 0;
      z-index: 200;
      backdrop-filter: saturate(1.2);
    }
    .header-inner {
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-icon {
      width: 40px;
      height: 40px;
      background: var(--copper);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 22px;
      border-radius: 4px;
      letter-spacing: -0.02em;
    }
    .brand-text {
      display: flex;
      align-items: baseline;
      gap: 2px;
      font-size: 24px;
      line-height: 1.2;
      color: var(--ink);
    }
    .brand-text strong {
      font-weight: 800;
      letter-spacing: 0.02em;
    }
    .brand-text .thin {
      font-weight: 300;
      letter-spacing: 0;
    }
    .brand-text small {
      display: block;
      font-family: var(--font-mono);
      font-size: 12px;
      color: var(--muted);
      margin-top: 2px;
      letter-spacing: 0.05em;
    }
    .main-nav {
      flex: 1;
      display: flex;
      justify-content: center;
    }
    .nav-list {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .nav-link {
      display: inline-block;
      padding: 18px 14px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text);
      border-bottom: 2px solid transparent;
      transition: color var(--transition), border-color var(--transition);
    }
    .nav-link:hover {
      color: var(--copper);
      border-color: var(--copper);
    }
    .nav-link.active {
      color: var(--copper);
      border-color: var(--copper);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 44px;
      padding: 0 26px;
      border-radius: 4px;
      font-size: 15px;
      font-weight: 600;
      line-height: 1;
      white-space: nowrap;
      transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
    }
    .btn:active {
      transform: translateY(1px);
    }
    .btn-primary {
      background: var(--copper);
      color: #fff;
      border: 1px solid var(--copper);
    }
    .btn-primary:hover {
      background: var(--copper-bright);
      border-color: var(--copper-bright);
    }
    .btn-outline {
      background: transparent;
      color: var(--ink);
      border: 1px solid var(--copper);
    }
    .btn-outline:hover {
      background: var(--copper);
      color: #fff;
    }
    .btn-dark {
      background: var(--ink);
      color: #fff;
      border: 1px solid var(--ink);
    }
    .btn-dark:hover {
      background: var(--copper);
      border-color: var(--copper);
    }
    .btn-header {
      height: 40px;
      padding: 0 20px;
      font-size: 14px;
    }
    .nav-toggle {
      display: none;
      font-size: 20px;
      color: var(--ink);
      width: 40px;
      height: 40px;
    }

    /* ===== Hero ===== */
    .hero {
      position: relative;
      background: var(--bg);
      padding: 84px 0 64px;
      overflow: hidden;
      border-bottom: 1px solid var(--border);
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        repeating-linear-gradient(0deg, rgba(22, 24, 26, 0.028) 0, rgba(22, 24, 26, 0.028) 1px, transparent 1px, transparent 44px),
        repeating-linear-gradient(90deg, rgba(22, 24, 26, 0.028) 0, rgba(22, 24, 26, 0.028) 1px, transparent 1px, transparent 44px);
      pointer-events: none;
    }
    .hero .container {
      position: relative;
      z-index: 1;
      display: flex;
      align-items: center;
      gap: 56px;
    }
    .hero-content {
      flex: 1 1 52%;
    }
    .hero-visual {
      flex: 1 1 48%;
      position: relative;
    }
    .hero-visual img {
      border-radius: 6px;
      box-shadow: var(--shadow);
      width: 100%;
      object-fit: cover;
      aspect-ratio: 4 / 3;
      transition: transform 0.8s cubic-bezier(0.2, 0.6, 0.3, 1);
    }
    .hero-visual::after {
      content: "";
      position: absolute;
      right: -16px;
      top: -16px;
      width: 120px;
      height: 120px;
      border-top: 2px solid var(--copper);
      border-right: 2px solid var(--copper);
      border-radius: 0 6px 0 0;
      z-index: -1;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--surface);
      border: 1px solid var(--border);
      padding: 4px 14px;
      border-radius: 40px;
      font-size: 12px;
      color: var(--copper);
      font-weight: 600;
      margin-bottom: 18px;
    }
    .hero h1 {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.3;
      color: var(--ink);
      letter-spacing: 0.01em;
      margin-bottom: 12px;
    }
    .hero-sub {
      font-size: 17px;
      color: var(--text);
      font-weight: 500;
      margin-bottom: 14px;
    }
    .hero-desc {
      font-size: 15px;
      color: var(--muted);
      line-height: 1.85;
      max-width: 520px;
      margin-bottom: 30px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }
    .hero-note {
      font-size: 13px;
      color: var(--muted);
      margin-top: 18px;
    }
    .hero-note code {
      font-family: var(--font-mono);
      background: var(--bg-soft);
      padding: 2px 6px;
      border-radius: 3px;
    }

    /* ===== Section generic ===== */
    .section {
      padding: 88px 0;
    }
    .section-tight {
      padding: 64px 0;
    }
    .section-head {
      max-width: 720px;
      margin-bottom: 48px;
    }
    .section-head .section-label {
      font-size: 13px;
      letter-spacing: 0.08em;
      color: var(--copper);
      font-weight: 600;
      text-transform: uppercase;
      margin-bottom: 8px;
    }
    .section-head h2 {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      color: var(--ink);
      margin-bottom: 10px;
    }
    .section-head p {
      font-size: 15px;
      color: var(--muted);
      line-height: 1.8;
    }

    /* ===== Permission cards (3-column list) ===== */
    .permission-grid {
      display: flex;
      gap: 24px;
      align-items: stretch;
    }
    .permission-card {
      flex: 1;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 34px 28px;
      display: flex;
      flex-direction: column;
      transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    }
    .permission-card:hover {
      transform: translateY(-2px);
      border-color: var(--copper);
      box-shadow: var(--shadow-sm);
    }
    .permission-card.featured {
      background: var(--ink);
      border-color: var(--copper);
      color: #fff;
    }
    .permission-card.featured:hover {
      box-shadow: 0 14px 32px rgba(22, 24, 26, 0.18);
    }
    .permission-card .p-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      font-weight: 600;
      color: var(--copper);
      background: rgba(160, 123, 79, 0.10);
      padding: 3px 12px;
      border-radius: 30px;
      margin-bottom: 16px;
      align-self: flex-start;
    }
    .permission-card.featured .p-tag {
      background: var(--copper);
      color: #fff;
    }
    .permission-card h3 {
      font-size: 24px;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .permission-card .p-scene {
      font-size: 14px;
      color: var(--muted);
      line-height: 1.7;
      margin-bottom: 20px;
      min-height: 44px;
    }
    .permission-card.featured .p-scene {
      color: rgba(255, 255, 255, 0.72);
    }
    .permission-card ul {
      margin-top: 0;
      flex: 1;
    }
    .permission-card ul li {
      position: relative;
      padding-left: 20px;
      font-size: 14px;
      line-height: 1.75;
      margin-bottom: 10px;
    }
    .permission-card ul li::before {
      content: "";
      position: absolute;
      left: 2px;
      top: 11px;
      width: 8px;
      height: 8px;
      border: 1px solid var(--copper);
      border-radius: 50%;
    }
    .permission-card.featured ul li::before {
      border-color: var(--copper-bright);
      background: var(--copper-bright);
    }
    .p-note {
      font-size: 13px;
      color: var(--muted);
      margin-top: 20px;
      padding-top: 16px;
      border-top: 1px solid var(--border);
    }
    .permission-card.featured .p-note {
      color: rgba(255, 255, 255, 0.58);
      border-top-color: rgba(255, 255, 255, 0.14);
    }

    /* ===== Detail list (staggered two columns) ===== */
    .detail-section {
      background: var(--surface);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .detail-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px 72px;
    }
    .detail-item {
      border-top: 1px solid var(--border);
      padding-top: 28px;
    }
    .detail-item:nth-child(even) {
      margin-top: 32px;
    }
    .detail-item h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--ink);
      margin-top: -6px;
      margin-bottom: 10px;
      position: relative;
      padding-left: 14px;
    }
    .detail-item h3::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0;
      bottom: 0;
      width: 4px;
      background: var(--copper);
      border-radius: 2px;
    }
    .detail-item p {
      font-size: 15px;
      color: var(--text);
      line-height: 1.85;
    }

    /* ===== FAQ ===== */
    .faq-wrap {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      border-bottom: 1px solid var(--border);
    }
    .faq-item:first-child {
      border-top: 1px solid var(--border);
    }
    .faq-q {
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 20px;
      text-align: left;
      padding: 24px 4px;
      color: var(--ink);
      font-size: 18px;
      font-weight: 600;
      background: transparent;
      transition: color var(--transition);
    }
    .faq-q:hover {
      color: var(--copper);
    }
    .faq-q .faq-icon {
      flex: 0 0 20px;
      position: relative;
      width: 20px;
      height: 20px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .faq-q .faq-icon::before,
    .faq-q .faq-icon::after {
      content: "";
      position: absolute;
      background: var(--copper);
      border-radius: 2px;
      transition: transform var(--transition);
    }
    .faq-q .faq-icon::before {
      width: 14px;
      height: 2px;
    }
    .faq-q .faq-icon::after {
      width: 2px;
      height: 14px;
    }
    .faq-item.open .faq-icon::after {
      transform: rotate(90deg);
      opacity: 0;
    }
    .faq-a {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0.2, 0.6, 0.3, 1), opacity 0.3s ease;
      opacity: 0;
    }
    .faq-item.open .faq-a {
      max-height: 320px;
      opacity: 1;
    }
    .faq-a-inner {
      padding: 0 40px 26px 4px;
      font-size: 15px;
      color: var(--text);
      line-height: 1.85;
    }

    /* ===== CTA band ===== */
    .cta-band {
      background: var(--ink);
      padding: 72px 0;
      color: #fff;
      text-align: center;
    }
    .cta-band h2 {
      font-size: 34px;
      font-weight: 800;
      margin-bottom: 12px;
      color: #fff;
    }
    .cta-band p {
      font-size: 15px;
      color: rgba(255, 255, 255, 0.68);
      max-width: 560px;
      margin: 0 auto 36px;
      line-height: 1.8;
    }
    .cta-band .btn {
      min-width: 180px;
    }
    .cta-note {
      font-size: 12px;
      color: rgba(255, 255, 255, 0.4);
      margin-top: 18px;
      font-family: var(--font-mono);
    }

    /* ===== Contact ===== */
    .contact-section {
      padding: 88px 0;
      background: var(--bg);
    }
    .contact-grid {
      display: flex;
      gap: 64px;
      align-items: flex-start;
    }
    .contact-info {
      flex: 1 1 36%;
    }
    .contact-info h2 {
      font-size: 30px;
      font-weight: 800;
      color: var(--ink);
      margin-bottom: 16px;
    }
    .contact-info p {
      color: var(--muted);
      font-size: 15px;
      line-height: 1.9;
      margin-bottom: 26px;
    }
    .contact-list {
      margin-bottom: 30px;
    }
    .contact-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      color: var(--text);
      font-size: 15px;
      padding: 12px 0;
      border-bottom: 1px solid var(--border);
    }
    .contact-list li i {
      color: var(--copper);
      font-size: 18px;
      width: 22px;
      text-align: center;
    }
    .contact-form-wrap {
      flex: 1 1 64%;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 6px;
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px 24px;
    }
    .form-field {
      position: relative;
    }
    .form-field.full {
      grid-column: 1 / -1;
    }
    .form-field label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--ink);
      margin-bottom: 6px;
    }
    .form-field input,
    .form-field textarea,
    .form-field select {
      width: 100%;
      border: none;
      border-bottom: 1px solid var(--border);
      background: transparent;
      padding: 12px 2px;
      font-size: 15px;
      outline: none;
      transition: border-color var(--transition), background var(--transition);
      border-radius: 0;
      height: 48px;
      resize: none;
    }
    .form-field textarea {
      height: 110px;
    }
    .form-field input:focus,
    .form-field textarea:focus,
    .form-field select:focus {
      border-bottom-color: var(--copper);
      background: #FBF9F7;
      padding-left: 6px;
    }
    .form-submit {
      margin-top: 28px;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--ink);
      color: rgba(255, 255, 255, 0.72);
      padding-top: 64px;
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 0.8fr 0.8fr 0.8fr 1.2fr;
      gap: 40px;
      padding-bottom: 48px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-brand .brand-bottom {
      font-size: 26px;
      font-weight: 800;
      color: #fff;
      display: flex;
      align-items: baseline;
      gap: 2px;
      margin-bottom: 12px;
    }
    .footer-brand .brand-bottom small {
      font-family: var(--font-mono);
      font-size: 12px;
      color: var(--muted);
      display: block;
      margin-top: 2px;
      font-weight: 400;
    }
    .footer-tagline {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.5);
      line-height: 1.7;
    }
    .footer-col h4,
    .footer-contact h4 {
      font-size: 15px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 18px;
    }
    .footer-col ul li {
      margin-bottom: 10px;
    }
    .footer-col ul li a {
      color: rgba(255, 255, 255, 0.56);
      font-size: 14px;
      transition: color var(--transition);
    }
    .footer-col ul li a:hover {
      color: var(--copper-bright);
    }
    .footer-contact p {
      font-size: 14px;
      margin-bottom: 8px;
      color: rgba(255, 255, 255, 0.56);
      font-family: var(--font-mono);
      letter-spacing: 0.02em;
    }
    .footer-bottom {
      padding: 22px 0;
      text-align: center;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }
    .footer-bottom p {
      font-size: 13px;
      color: rgba(255, 255, 255, 0.36);
    }
    .footer-bottom .footer-domain {
      font-family: var(--font-mono);
      margin-top: 4px;
      font-size: 12px;
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .hero {
        padding: 60px 0 48px;
      }
      .hero .container {
        gap: 32px;
      }
      .hero h1 {
        font-size: 36px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr 1fr;
      }
      .header-inner {
        gap: 16px;
      }
      .nav-link {
        padding: 18px 10px;
        font-size: 14px;
      }
    }
    @media (max-width: 900px) {
      .nav-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
      }
      .main-nav {
        position: fixed;
        top: 0;
        right: 0;
        width: 100%;
        height: 100vh;
        background: var(--surface);
        z-index: 300;
        padding: 100px 36px 40px;
        display: block;
        transform: translateX(100%);
        transition: transform 0.3s cubic-bezier(0.2, 0.6, 0.3, 1);
        overflow-y: auto;
      }
      .main-nav.nav-open {
        transform: translateX(0);
      }
      .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
      }
      .nav-link {
        display: block;
        width: 100%;
        font-size: 20px;
        padding: 16px 0;
        border-bottom: none;
      }
      .btn-header {
        display: none;
      }
      body.nav-locked {
        overflow: hidden;
      }
      .hero .container {
        flex-direction: column;
      }
      .hero-visual {
        width: 100%;
      }
      .permission-grid {
        flex-direction: column;
      }
      .detail-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .detail-item:nth-child(even) {
        margin-top: 0;
      }
      .contact-grid {
        flex-direction: column;
        gap: 36px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
    }
    @media (max-width: 640px) {
      .topbar-links span {
        display: none;
      }
      .topbar-links a {
        font-size: 12px;
      }
      .brand-text {
        font-size: 20px;
      }
      .brand-text small {
        font-size: 11px;
      }
      .hero h1 {
        font-size: 32px;
      }
      .hero-sub {
        font-size: 16px;
      }
      .section {
        padding: 60px 0;
      }
      .section-head h2 {
        font-size: 26px;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .contact-form-wrap {
        padding: 28px 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }
      .footer-brand .brand-bottom {
        font-size: 22px;
      }
    }

/* roulang page: category3 */
:root {
  --primary: #16181A;
  --accent: #A07B4F;
  --accent-hover: #B58E5E;
  --bg: #F5F3F0;
  --bg-secondary: #EFECE7;
  --surface: #FFFFFF;
  --text: #16181A;
  --text-secondary: #3D3A36;
  --text-muted: #8B857D;
  --border: rgba(22, 24, 26, 0.10);
  --border-accent: rgba(160, 123, 79, 0.35);
  --success: #3E6B4F;
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 6px;
  --shadow-card: 0 1px 3px rgba(22, 24, 26, 0.04), 0 4px 12px rgba(22, 24, 26, 0.03);
  --shadow-float: 0 8px 24px rgba(22, 24, 26, 0.06);
  --ease: cubic-bezier(0.2, 0.6, 0.3, 1);
  --font-base: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  --container: 1200px;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-base);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--text); text-decoration: none; transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease); }
ul, ol { list-style: none; }
input, button, textarea, select { font: inherit; }
button { background: none; border: none; cursor: pointer; }
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.no-scroll { overflow: hidden; }

/* ===== Top Bar ===== */
.topbar {
  background: var(--primary);
  height: 40px;
  display: flex;
  align-items: center;
  font-size: 12px;
}
.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.topbar-domain {
  font-family: var(--font-mono);
  color: var(--accent);
  letter-spacing: 0.4px;
}
.topbar-links {
  display: flex;
  align-items: center;
  gap: 24px;
}
.topbar-links a {
  color: rgba(255, 255, 255, 0.78);
  font-size: 12px;
  transition: color 0.25s var(--ease);
}
.topbar-links a:hover { color: #fff; }
.topbar-cta {
  border: 1px solid var(--accent);
  color: #fff !important;
  padding: 3px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  letter-spacing: 0.6px;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease);
}
.topbar-cta:hover { background: var(--accent); border-color: var(--accent); }

/* ===== Main Header ===== */
.main-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: saturate(1.2);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-icon {
  width: 40px;
  height: 40px;
  background: var(--accent);
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  letter-spacing: -1px;
}
.brand-text {
  display: inline-flex;
  align-items: baseline;
  font-size: 18px;
  line-height: 1.2;
  color: var(--text);
}
.brand-text strong {
  font-weight: 800;
  font-size: 20px;
}
.brand-text .thin {
  font-weight: 300;
  letter-spacing: 1px;
}
.brand-text small {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  line-height: 1.3;
}
.main-nav { margin-left: 32px; }
.nav-list {
  display: flex;
  gap: 4px;
}
.nav-link {
  display: block;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  position: relative;
  transition: color 0.25s var(--ease), background 0.25s var(--ease);
}
.nav-link:hover {
  color: var(--primary);
  background: rgba(160, 123, 79, 0.06);
}
.nav-link.active {
  color: var(--accent);
  font-weight: 600;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 2px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}
.btn-header { flex-shrink: 0; }
.nav-toggle {
  display: none;
  font-size: 22px;
  color: var(--text);
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  line-height: 1;
}
.nav-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ===== Mobile Menu ===== */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--surface);
  z-index: 200;
  transform: translateX(100%);
  transition: transform 0.35s var(--ease);
  display: flex;
  flex-direction: column;
  padding: 24px;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.mobile-menu-title {
  font-size: 20px;
  font-weight: 700;
}
.mobile-menu-close {
  font-size: 22px;
  color: var(--text);
  padding: 8px;
}
.mobile-menu ul {
  flex: 1;
  padding: 32px 0;
}
.mobile-menu ul li a {
  display: block;
  font-size: 20px;
  font-weight: 500;
  color: var(--text);
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}
.mobile-menu ul li a.active { color: var(--accent); font-weight: 700; }
.mobile-menu-contact {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  color: var(--text-muted);
  font-size: 14px;
}
.mobile-menu-contact p { margin-bottom: 4px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.4px;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.1s var(--ease), box-shadow 0.25s var(--ease);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(22, 24, 26, 0.14);
}
.btn-primary:hover { background: var(--accent); box-shadow: 0 4px 16px rgba(160, 123, 79, 0.28); }
.btn-gold {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 10px rgba(160, 123, 79, 0.22);
}
.btn-gold:hover { background: var(--accent-hover); }
.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn-outline:hover {
  background: rgba(160, 123, 79, 0.08);
  border-color: var(--accent-hover);
  color: var(--accent-hover);
}
.btn-text {
  background: none;
  color: var(--text);
  padding: 0 8px;
  height: 44px;
  font-weight: 500;
  border-bottom: 1px solid transparent;
  border-radius: 0;
}
.btn-text:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ===== Hero ===== */
.page-hero {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  padding: 88px 0 72px;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(22, 24, 26, 0.05) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(22, 24, 26, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
  align-items: center;
}
.hero-copy h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
  color: var(--text);
  animation: riseIn 0.4s var(--ease) both;
}
.hero-copy h1 .accent {
  color: var(--accent);
  font-weight: 900;
}
.hero-subtitle {
  font-size: 18px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 14px;
  animation: riseIn 0.4s var(--ease) 0.08s both;
}
.hero-desc {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.9;
  animation: riseIn 0.4s var(--ease) 0.16s both;
}
.hero-cta {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 32px;
  animation: riseIn 0.4s var(--ease) 0.24s both;
}
.hero-media {
  position: relative;
}
.hero-media img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-float);
  animation: scaleIn 0.6s var(--ease) both;
}
@keyframes riseIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(1.02); }
  to { opacity: 1; transform: scale(1); }
}

/* ===== Section ===== */
.section {
  padding: 88px 0;
}
.section-head {
  margin-bottom: 44px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 8px;
}
.section-head p {
  color: var(--text-muted);
  font-size: 16px;
}

/* ===== Mini Cards ===== */
.grid-cards {
  margin: 0 -12px;
}
.mini-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  height: 100%;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.mini-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: var(--shadow-card);
}
.mini-card-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: rgba(160, 123, 79, 0.10);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 16px;
}
.mini-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}
.mini-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== Timeline ===== */
.section-timeline {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.timeline-lead {
  max-width: 820px;
  margin-bottom: 48px;
}
.timeline-lead h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 16px;
}
.timeline-lead p {
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-secondary);
}
.timeline {
  position: relative;
  margin-left: 20px;
}
.timeline-item {
  position: relative;
  padding-left: 48px;
  padding-bottom: 44px;
  border-left: 1px solid rgba(160, 123, 79, 0.30);
}
.timeline-item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
  border-left: 1px solid rgba(160, 123, 79, 0.30);
}
.timeline-item:last-child::after {
  content: "";
  position: absolute;
  left: -7px;
  bottom: 0;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--accent);
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
}
.timeline-time {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.4px;
  margin-bottom: 6px;
}
.timeline-item h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}
.timeline-item p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 760px;
}

/* ===== Detail List ===== */
.section-detail {
  background: var(--bg);
}
.section-detail h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 40px;
}
.detail-list {
  max-width: 960px;
}
.detail-item {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.25s var(--ease);
}
.detail-item:hover {
  background: rgba(255, 255, 255, 0.5);
}
.detail-item:first-child { padding-top: 0; }
.detail-item:last-child { border-bottom: none; }
.detail-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  transform: translateY(6px);
  position: relative;
  padding-left: 16px;
}
.detail-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  bottom: 7px;
  width: 4px;
  border-radius: 2px;
  background: var(--accent);
}
.detail-content {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.85;
}

/* ===== FAQ Accordion ===== */
.section-faq {
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.section-faq h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 32px;
}
.faq-accordion {
  max-width: 860px;
  border-top: 1px solid var(--border);
}
.faq-accordion .accordion-item {
  border-bottom: 1px solid var(--border);
  background: transparent;
}
.faq-accordion .accordion-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  background: transparent;
  border: none;
  position: relative;
  transition: color 0.25s var(--ease);
}
.faq-accordion .accordion-title:hover,
.faq-accordion .accordion-title:focus {
  color: var(--accent);
  background: rgba(160, 123, 79, 0.03);
}
.faq-accordion .accordion-title::after {
  content: "+";
  font-size: 22px;
  font-weight: 300;
  color: var(--accent);
  transition: transform 0.3s var(--ease);
  width: 24px;
  text-align: right;
}
.faq-accordion .accordion-item.is-active .accordion-title::after {
  transform: rotate(45deg);
}
.faq-accordion .accordion-content {
  padding: 0 8px 22px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.85;
  background: transparent;
  border: none;
}

/* ===== CTA Panel ===== */
.section-cta {
  background: var(--primary);
  padding: 88px 0;
}
.cta-panel {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}
.cta-panel h2 {
  font-size: 34px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}
.cta-panel p {
  color: rgba(255, 255, 255, 0.72);
  font-size: 16px;
  line-height: 1.9;
  margin-bottom: 36px;
}
.cta-actions {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}
.cta-actions .btn-outline {
  color: var(--accent);
}
.cta-note {
  margin-top: 20px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 0.8fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand .brand-bottom {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 8px;
}
.footer-brand .brand-bottom strong {
  color: var(--accent);
}
.footer-brand small {
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  display: block;
  margin-top: 4px;
}
.footer-tagline {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  margin-top: 16px;
  line-height: 1.7;
}
.footer-col h4,
.footer-contact h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.4px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  transition: color 0.25s var(--ease), padding-left 0.25s var(--ease);
}
.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-contact p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  letter-spacing: 0.2px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  text-align: center;
}
.footer-bottom p {
  color: rgba(255, 255, 255, 0.4);
  font-size: 13px;
  line-height: 1.7;
}
.footer-domain {
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.35);
  margin-top: 4px;
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .main-nav { display: none; }
  .btn-header { display: none; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; }
  .header-inner { height: 64px; }
  .brand-icon { width: 36px; height: 36px; font-size: 19px; }
  .brand-text { font-size: 16px; }
  .brand-text strong { font-size: 18px; }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-copy h1 { font-size: 40px; }
  .hero-media { max-width: 560px; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .footer-brand { grid-column: 1 / -1; }
  .detail-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .detail-title { transform: none; }
}

@media (max-width: 767px) {
  .topbar-domain { font-size: 11px; }
  .topbar-links a { font-size: 11px; }
  .topbar-links { gap: 14px; }
  .section { padding: 64px 0; }
  .hero-copy h1 { font-size: 34px; }
  .hero-subtitle { font-size: 16px; }
  .hero-desc { font-size: 15px; }
  .section-head h2 { font-size: 24px; }
  .timeline-item { padding-left: 32px; }
  .timeline-item h3 { font-size: 18px; }
  .cta-panel h2 { font-size: 26px; }
  .cta-actions { flex-direction: column; align-items: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .mini-card { padding: 22px 18px; }
  .grid-cards .column {
    margin-bottom: 20px;
  }
  .detail-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .detail-title { margin-bottom: 6px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .topbar .container { flex-direction: column; height: auto; padding: 6px 16px; gap: 4px; }
  .topbar { height: auto; }
  .page-hero { padding: 56px 0 48px; }
  .hero-copy h1 { font-size: 28px; }
  .hero-cta { flex-direction: column; align-items: flex-start; }
  .btn { width: 100%; }
  .cta-actions .btn { width: 100%; }
}