/* roulang page: index */
:root {
  --primary: #2563EB;
  --primary-dark: #1D4ED8;
  --primary-light: #EFF6FF;
  --accent: #F97316;
  --accent-dark: #EA580C;
  --bg: #F8FAFC;
  --card: #FFFFFF;
  --text: #1E293B;
  --text-body: #475569;
  --text-muted: #94A3B8;
  --border: #E2E8F0;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 28px rgba(30,64,175,0.10);
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { display:block; max-width:100%; }
a { text-decoration:none; color:inherit; }
button { font-family:inherit; cursor:pointer; }

.container { max-width:1200px; margin:0 auto; padding:0 20px; }
.section-pad { padding:80px 0; }
@media (max-width:768px) { .section-pad { padding:48px 0; } }

.line-clamp-2 { display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.line-clamp-3 { display:-webkit-box; -webkit-line-clamp:3; -webkit-box-orient:vertical; overflow:hidden; }

/* 按钮 */
.btn-primary {
  display:inline-flex; align-items:center; gap:8px;
  background:var(--primary); color:#fff;
  padding:12px 26px; border-radius:12px; font-weight:600; font-size:15px;
  transition:all .15s ease; border:none; box-shadow:0 4px 14px rgba(37,99,235,.25);
}
.btn-primary:hover { background:var(--primary-dark); transform:translateY(-2px); box-shadow:0 8px 20px rgba(37,99,235,.30); }
.btn-primary:focus-visible { outline:3px solid #bfdbfe; outline-offset:2px; }

.btn-secondary {
  display:inline-flex; align-items:center; gap:8px;
  background:#fff; color:var(--primary);
  padding:12px 26px; border-radius:12px; font-weight:600; font-size:15px;
  border:1.5px solid var(--primary); transition:all .15s ease;
}
.btn-secondary:hover { background:var(--primary-light); transform:translateY(-2px); }
.btn-secondary:focus-visible { outline:3px solid #bfdbfe; outline-offset:2px; }

.btn-accent {
  display:inline-flex; align-items:center; gap:8px;
  background:var(--accent); color:#fff;
  padding:12px 26px; border-radius:12px; font-weight:700; font-size:15px;
  transition:all .15s ease; border:none; box-shadow:0 4px 16px rgba(249,115,22,.28);
}
.btn-accent:hover { background:var(--accent-dark); transform:translateY(-2px); box-shadow:0 8px 22px rgba(249,115,22,.32); }
.btn-accent:focus-visible { outline:3px solid #fed7aa; outline-offset:2px; }

.btn-lg { padding:16px 38px; font-size:17px; }

/* 导航 */
.site-header {
  position: sticky; top:0; z-index:100;
  background:#fff;
  box-shadow:0 2px 18px rgba(30,64,175,0.06);
  border-bottom:1px solid #f1f5f9;
}
.header-inner { display:flex; align-items:center; justify-content:space-between; height:72px; }
.logo { display:flex; align-items:center; gap:10px; }
.logo-icon {
  width:40px; height:40px; border-radius:12px;
  background:linear-gradient(135deg, #2563EB 0%, #3B82F6 100%);
  display:flex; align-items:center; justify-content:center;
  color:#fff; box-shadow:0 4px 12px rgba(37,99,235,.3);
}
.logo-text { font-size:20px; font-weight:800; color:var(--text); letter-spacing:0; }
.logo-text .sub { font-size:13px; font-weight:500; color:var(--text-muted); margin-left:4px; letter-spacing:1px; }
.nav-menu { display:flex; align-items:center; gap:6px; }
.nav-link {
  display:flex; align-items:center; gap:8px;
  padding:10px 18px; border-radius:12px;
  font-size:15px; font-weight:500; color:var(--text-body);
  transition:all .15s ease; background:transparent; border:1px solid transparent;
}
.nav-link:hover { background:#F1F5F9; transform:translateY(-1px); }
.nav-link.active { background:var(--primary-light); color:var(--primary); font-weight:600; border-color:#dbeafe; }
.nav-cta { margin-left:12px; }
.mobile-toggle { display:none; align-items:center; justify-content:center; width:42px; height:42px; border-radius:10px; border:1px solid var(--border); background:#fff; color:var(--text); }
@media (max-width:768px) {
  .nav-menu {
    display:none; position:absolute; top:100%; left:0; right:0;
    background:#fff; padding:16px 20px; border-radius:0 0 16px 16px;
    box-shadow:0 16px 30px rgba(0,0,0,.08); flex-direction:column; gap:10px;
    border-top:1px solid #f1f5f9;
  }
  .nav-menu.open { display:flex; }
  .nav-link { width:100%; padding:14px 16px; }
  .nav-cta { margin-left:0; margin-top:4px; width:100%; }
  .nav-cta .btn-accent { width:100%; justify-content:center; }
  .mobile-toggle { display:flex; }
  .desktop-cta { display:none; }
}
@media (min-width:769px) { .nav-cta.desktop-cta { display:inline-flex; } }

/* Hero */
.hero-section {
  position: relative; overflow:hidden;
  background:linear-gradient(120deg, #EFF6FF 0%, #FFFFFF 55%, #F0F9FF 100%);
}
.hero-section::before {
  content:''; position:absolute; inset:0;
  background:url('/assets/images/backpic/back-1.webp') no-repeat right center / cover;
  opacity:.10; z-index:0;
}
.hero-section::after {
  content:''; position:absolute; top:-120px; right:-160px; width:420px; height:420px;
  background:radial-gradient(circle, rgba(59,130,246,.12) 0%, transparent 70%);
  border-radius:50%; z-index:0;
}
.hero-inner { position:relative; z-index:10; display:grid; grid-template-columns:1.1fr .9fr; gap:56px; align-items:center; padding:88px 0 96px; }
.hero-badge {
  display:inline-flex; align-items:center; gap:8px;
  background:rgba(255,255,255,.85); border:1px solid #dbeafe; border-radius:999px;
  padding:8px 18px; font-size:14px; font-weight:600; color:#1D4ED8;
  box-shadow:0 2px 10px rgba(37,99,235,.08);
}
.hero-badge svg { width:16px; height:16px; }
.hero-title { margin-top:24px; font-size:42px; line-height:1.15; font-weight:800; color:var(--text); letter-spacing:-0.01em; }
.hero-sub { margin-top:22px; font-size:18px; line-height:1.8; color:var(--text-body); max-width:520px; }
.hero-actions { margin-top:32px; display:flex; flex-wrap:wrap; gap:14px; }
.hero-visual { position:relative; }
.hero-visual .blob { position:absolute; top:-24px; right:-18px; width:160px; height:160px; background:rgba(59,130,246,.10); border-radius:50%; filter:blur(32px); }
.hero-visual img { position:relative; z-index:2; border-radius:24px; box-shadow:0 24px 48px rgba(30,64,175,.16); object-fit:cover; width:100%; aspect-ratio:4/3; }
.hero-float-card {
  position:absolute; bottom:22px; left:20px; z-index:3;
  background:rgba(255,255,255,.92); backdrop-filter:blur(8px);
  border-radius:16px; box-shadow:0 10px 30px rgba(0,0,0,.10);
  padding:14px 18px; display:flex; align-items:center; gap:12px;
  border:1px solid #f1f5f9;
}
.hero-float-icon { width:40px; height:40px; border-radius:10px; background:var(--primary-light); display:flex; align-items:center; justify-content:center; color:var(--primary); }
.hero-float-title { font-size:14px; font-weight:700; color:var(--text); }
.hero-float-meta { font-size:12px; color:var(--text-muted); }
@media (max-width:1024px) {
  .hero-inner { grid-template-columns:1fr; gap:32px; padding:56px 0 64px; }
  .hero-title { font-size:34px; }
  .hero-visual { max-width:560px; }
}
@media (max-width:640px) {
  .hero-inner { padding:40px 0 48px; }
  .hero-title { font-size:28px; }
  .hero-sub { font-size:16px; }
  .hero-actions .btn-primary, .hero-actions .btn-secondary { width:100%; justify-content:center; }
}

/* 信任条 */
.trust-wrap { position:relative; z-index:20; margin-top:-36px; }
.trust-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; background:#fff; border-radius:20px; padding:28px; box-shadow:0 10px 30px rgba(30,64,175,.06); border:1px solid #f1f5f9; }
.trust-item { display:flex; align-items:center; gap:14px; }
.trust-icon { width:44px; height:44px; flex-shrink:0; border-radius:12px; background:var(--primary-light); color:var(--primary); display:flex; align-items:center; justify-content:center; }
.trust-text { font-size:15px; font-weight:700; color:var(--text); line-height:1.3; }
.trust-text span { display:block; font-size:12px; font-weight:400; color:var(--text-muted); }
@media (max-width:768px) { .trust-grid { grid-template-columns:1fr 1fr; padding:20px; } }
@media (max-width:480px) { .trust-grid { grid-template-columns:1fr; } }

/* 通用板块 */
.section-head { text-align:center; margin-bottom:48px; }
.section-tag { display:inline-block; background:var(--primary-light); color:var(--primary); font-size:13px; font-weight:700; padding:6px 16px; border-radius:999px; margin-bottom:14px; letter-spacing:.5px; }
.section-title { font-size:32px; font-weight:800; color:var(--text); line-height:1.25; }
.section-desc { margin-top:12px; font-size:16px; color:var(--text-body); max-width:640px; margin-left:auto; margin-right:auto; }
@media (max-width:768px) { .section-title { font-size:26px; } }

/* 优惠阶梯 */
.deals-grid { display:grid; grid-template-columns:1fr 1fr 1fr; gap:24px; align-items:stretch; }
.deal-card {
  background:#fff; border-radius:20px; padding:36px 28px;
  box-shadow:var(--shadow); border:1px solid #f1f5f9;
  transition:all .2s ease; position:relative; display:flex; flex-direction:column;
}
.deal-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-lg); }
.deal-card.hot { border:2px solid var(--accent); box-shadow:0 16px 40px rgba(249,115,22,.10); }
.deal-card.hot::before { content:''; position:absolute; top:0; left:0; right:0; height:5px; background:var(--accent); border-radius:20px 20px 0 0; }
.hot-badge {
  position:absolute; top:-12px; right:20px; background:var(--accent); color:#fff;
  font-size:12px; font-weight:700; padding:5px 14px; border-radius:999px; box-shadow:0 4px 12px rgba(249,115,22,.3);
}
.deal-name { font-size:20px; font-weight:800; color:var(--text); }
.deal-desc { margin-top:6px; font-size:14px; color:var(--text-muted); }
.deal-list { list-style:none; margin:22px 0 0; padding:0; flex:1; }
.deal-list li { display:flex; align-items:flex-start; gap:10px; padding:8px 0; font-size:15px; color:var(--text-body); }
.deal-list li svg { width:18px; height:18px; color:#22c55e; flex-shrink:0; margin-top:3px; }
.deal-cond { margin-top:16px; padding-top:14px; border-top:1px dashed var(--border); font-size:13px; color:var(--text-muted); }
.deal-cta { margin-top:20px; }
.deal-card.hot .deal-cta .btn-accent { width:100%; justify-content:center; }
.deal-card:not(.hot) .deal-cta .btn-secondary { width:100%; justify-content:center; }
@media (max-width:900px) { .deals-grid { grid-template-columns:1fr; max-width:480px; margin:0 auto; } }

/* 套餐对比 */
.plans-wrap { background:#fff; border-radius:28px; padding:64px 20px; box-shadow:0 10px 40px rgba(30,64,175,.04); border:1px solid #f1f5f9; position:relative; overflow:hidden; }
.plans-grid { display:flex; gap:20px; justify-content:center; align-items:flex-end; max-width:1000px; margin:0 auto; }
.plan-card { flex:1; max-width:320px; background:#F8FAFC; border-radius:20px; padding:32px 24px; border:1px solid #e2e8f0; transition:all .2s ease; }
.plan-card:hover { transform:translateY(-3px); box-shadow:var(--shadow-lg); }
.plan-card.recommend { flex:1.08; background:#fff; border:2px solid var(--primary); box-shadow:0 20px 44px rgba(37,99,235,.12); padding:40px 28px; transform:scale(1.02); }
.plan-card.recommend:hover { transform:scale(1.02) translateY(-3px); }
.plan-recommend-badge {
  display:inline-block; background:var(--primary); color:#fff; font-size:12px; font-weight:700;
  padding:5px 14px; border-radius:999px; margin-bottom:14px;
}
.plan-name { font-size:18px; font-weight:800; color:var(--text); }
.plan-price { margin-top:12px; display:flex; align-items:baseline; gap:4px; }
.plan-price .num { font-size:40px; font-weight:800; color:var(--text); line-height:1; }
.plan-price .unit { font-size:14px; color:var(--text-muted); }
.plan-features { list-style:none; margin:24px 0 0; padding:0; }
.plan-features li { display:flex; align-items:flex-start; gap:10px; padding:7px 0; font-size:14px; color:var(--text-body); }
.plan-features li svg { width:17px; height:17px; flex-shrink:0; margin-top:3px; }
.plan-features li.no svg { color:#cbd5e1; }
.plan-features li.no { color:var(--text-muted); }
.plan-cta { margin-top:22px; }
.plan-card.recommend .plan-cta .btn-primary { width:100%; justify-content:center; }
.plan-card:not(.recommend) .plan-cta .btn-secondary { width:100%; justify-content:center; }
@media (max-width:900px) { .plans-grid { flex-direction:column; align-items:center; } .plan-card, .plan-card.recommend { max-width:420px; width:100%; flex:none; transform:none; } .plan-card.recommend:hover { transform:translateY(-3px); } }

/* 资讯 */
.news-wrap { background:linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%); border-radius:28px; padding:56px 32px; border:1px solid #f1f5f9; }
.news-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.news-card {
  background:#fff; border-radius:16px; border:1px solid #f1f5f9;
  overflow:hidden; transition:all .2s ease; display:block;
  box-shadow:var(--shadow);
}
.news-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-lg); border-color:#dbeafe; }
.news-card-lg { grid-column:span 2; display:grid; grid-template-columns:1.1fr .9fr; }
.news-card-lg .news-thumb { height:100%; min-height:240px; }
.news-thumb { height:170px; overflow:hidden; background:var(--primary-light); }
.news-thumb img { width:100%; height:100%; object-fit:cover; transition:transform .3s ease; }
.news-card:hover .news-thumb img { transform:scale(1.03); }
.news-body { padding:20px; }
.news-card-lg .news-body { padding:28px; display:flex; flex-direction:column; justify-content:center; }
.news-tag {
  display:inline-block; background:var(--primary-light); color:var(--primary);
  font-size:12px; font-weight:700; padding:4px 12px; border-radius:999px; margin-bottom:10px;
}
.news-title { font-size:17px; font-weight:700; color:var(--text); line-height:1.4; margin-bottom:8px; }
.news-card-lg .news-title { font-size:21px; }
.news-summary { font-size:14px; color:var(--text-body); line-height:1.7; }
.news-time { display:block; margin-top:14px; font-size:13px; color:var(--text-muted); }
.news-empty {
  grid-column:1/-1; border:2px dashed #cbd5e1; border-radius:20px; min-height:180px;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:12px;
  background:#F8FAFC; color:var(--text-muted); font-size:15px;
}
.news-empty-icon { width:52px; height:52px; border-radius:50%; background:#e2e8f0; display:flex; align-items:center; justify-content:center; color:#94a3b8; }
.news-more { text-align:center; margin-top:36px; }
@media (max-width:900px) { .news-grid { grid-template-columns:1fr 1fr; } .news-card-lg { grid-column:span 2; } }
@media (max-width:640px) { .news-grid { grid-template-columns:1fr; } .news-card-lg { grid-column:span 1; grid-template-columns:1fr; } .news-wrap { padding:32px 16px; } }

/* 限时 */
.deals-banner {
  position:relative; overflow:hidden; border-radius:28px;
  background:linear-gradient(120deg, #1D4ED8 0%, #2563EB 55%, #3B82F6 100%);
  color:#fff; padding:64px 56px; z-index:1;
}
.deals-banner::before {
  content:''; position:absolute; top:0; right:0; width:60%; height:100%;
  background:url('/assets/images/backpic/back-2.webp') no-repeat right center / cover;
  opacity:.14; z-index:0;
}
.deals-banner::after {
  content:''; position:absolute; bottom:-60px; left:10%; width:200px; height:200px;
  border:32px solid rgba(255,255,255,.06); border-radius:50%; z-index:0;
}
.deals-banner-inner { position:relative; z-index:2; display:flex; align-items:center; justify-content:space-between; gap:32px; flex-wrap:wrap; }
.deals-title { font-size:30px; font-weight:800; line-height:1.3; }
.deals-sub { margin-top:8px; font-size:15px; opacity:.85; }
.countdown { display:flex; gap:10px; margin-top:20px; }
.countdown-box { background:rgba(255,255,255,.14); border:1px solid rgba(255,255,255,.2); backdrop-filter:blur(4px); border-radius:14px; padding:12px 18px; text-align:center; min-width:68px; }
.countdown-box .num { font-size:28px; font-weight:800; line-height:1; }
.countdown-box .label { font-size:12px; opacity:.75; margin-top:4px; }
.deals-cta { text-align:center; position:relative; z-index:2; }
@media (max-width:768px) { .deals-banner { padding:40px 24px; } .deals-title { font-size:24px; } .countdown-box { min-width:56px; padding:8px 10px; } .countdown-box .num { font-size:22px; } }

/* FAQ */
.faq-grid { max-width:820px; margin:0 auto; display:flex; flex-direction:column; gap:14px; }
.faq-item { background:#fff; border-radius:14px; border:1px solid var(--border); overflow:hidden; transition:border-color .2s ease, box-shadow .2s ease; }
.faq-item:hover { border-color:#bfdbfe; }
.faq-item.active { border-color:var(--primary); box-shadow:0 8px 24px rgba(37,99,235,.08); }
.faq-question { width:100%; background:none; border:none; padding:20px 24px; font-size:16px; font-weight:700; color:var(--text); display:flex; align-items:center; justify-content:space-between; gap:12px; text-align:left; }
.faq-icon { width:28px; height:28px; border-radius:8px; background:var(--primary-light); color:var(--primary); display:flex; align-items:center; justify-content:center; flex-shrink:0; transition:transform .2s ease; }
.faq-item.active .faq-icon { transform:rotate(45deg); background:var(--primary); color:#fff; }
.faq-answer { max-height:0; overflow:hidden; transition:max-height .25s ease; }
.faq-answer-inner { padding:0 24px 20px; font-size:15px; color:var(--text-body); line-height:1.8; }

/* 表单 */
.contact-wrap { background:#fff; border-radius:28px; box-shadow:0 10px 40px rgba(30,64,175,.04); border:1px solid #f1f5f9; overflow:hidden; }
.contact-grid { display:grid; grid-template-columns:1fr 1fr; }
.contact-form-side { padding:48px; }
.contact-info-side { background:var(--primary-light); padding:48px; display:flex; flex-direction:column; justify-content:space-between; }
.form-group { margin-bottom:20px; }
.form-label { display:block; font-size:14px; font-weight:600; color:var(--text); margin-bottom:8px; }
.form-input {
  width:100%; padding:13px 16px; border:1.5px solid #CBD5E1; border-radius:10px;
  font-size:15px; color:var(--text); background:#fff; transition:all .15s ease;
}
.form-input:focus { outline:none; border-color:var(--primary); box-shadow:0 0 0 3px rgba(37,99,235,.10); }
.form-input::placeholder { color:#94A3B8; }
.radio-group { display:grid; grid-template-columns:1fr 1fr; gap:10px; }
.radio-card { position:relative; }
.radio-card input { position:absolute; opacity:0; width:100%; height:100%; cursor:pointer; z-index:1; }
.radio-card span {
  display:flex; align-items:center; justify-content:center; padding:12px 14px;
  border:1.5px solid #CBD5E1; border-radius:10px; font-size:14px; font-weight:500; color:var(--text-body);
  transition:all .15s ease; text-align:center;
}
.radio-card input:checked + span { border-color:var(--primary); background:var(--primary-light); color:var(--primary); font-weight:600; }
.radio-card input:focus-visible + span { outline:3px solid #bfdbfe; outline-offset:2px; }
.form-submit { width:100%; margin-top:6px; justify-content:center; }
.contact-info-title { font-size:24px; font-weight:800; color:var(--text); }
.contact-info-desc { margin-top:8px; font-size:15px; color:var(--text-body); line-height:1.7; }
.contact-info-list { list-style:none; margin-top:28px; }
.contact-info-list li { display:flex; align-items:flex-start; gap:12px; padding:10px 0; font-size:15px; color:var(--text-body); }
.contact-info-list li svg { width:20px; height:20px; color:var(--primary); flex-shrink:0; margin-top:2px; }
.contact-qr { margin-top:24px; display:flex; align-items:center; gap:16px; background:#fff; padding:14px 18px; border-radius:14px; border:1px solid #e2e8f0; }
.qr-placeholder { width:72px; height:72px; border-radius:12px; background:linear-gradient(135deg,#e2e8f0,#f1f5f9); display:flex; align-items:center; justify-content:center; color:#94a3b8; flex-shrink:0; }
.qr-text { font-size:13px; color:var(--text-body); line-height:1.6; }
@media (max-width:900px) { .contact-grid { grid-template-columns:1fr; } .contact-form-side, .contact-info-side { padding:32px 24px; } }

/* 页脚 */
.site-footer { background:#0F172A; color:#CBD5E1; margin-top:40px; }
.footer-container { max-width:1200px; margin:0 auto; padding:64px 20px 0; }
.footer-grid { display:grid; grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:40px; padding-bottom:44px; border-bottom:1px solid rgba(255,255,255,.08); }
.footer-brand .logo-text { color:#fff; }
.footer-brand-desc { margin-top:16px; font-size:14px; line-height:1.8; color:#94A3B8; max-width:300px; }
.footer-heading { font-size:15px; font-weight:700; color:#fff; margin-bottom:18px; }
.footer-links { list-style:none; }
.footer-links li { padding:6px 0; }
.footer-links a { font-size:14px; color:#94A3B8; transition:color .15s ease; }
.footer-links a:hover { color:#fff; }
.footer-contact { list-style:none; }
.footer-contact li { display:flex; align-items:flex-start; gap:10px; padding:6px 0; font-size:14px; color:#94A3B8; }
.footer-contact li svg { width:17px; height:17px; color:#64748B; flex-shrink:0; margin-top:2px; }
.footer-bottom { padding:22px 0; text-align:center; font-size:13px; color:#64748B; }
.footer-bottom .dot { margin:0 8px; }
@media (max-width:900px) { .footer-grid { grid-template-columns:1fr 1fr; } }
@media (max-width:640px) { .footer-grid { grid-template-columns:1fr; } }

/* roulang page: article */
:root {
  --primary: #2563EB;
  --primary-dark: #1D4ED8;
  --primary-light: #EFF6FF;
  --accent: #F97316;
  --accent-dark: #EA580C;
  --ink: #1E293B;
  --body: #475569;
  --muted: #94A3B8;
  --line: #E2E8F0;
  --bg: #F8FAFC;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06);
  --shadow-md: 0 4px 16px rgba(37, 99, 235, .08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, .10);
  --width: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { border: none; background: none; cursor: pointer; font: inherit; }

.container {
  max-width: var(--width);
  margin: 0 auto;
  padding: 0 20px;
}

/* 头部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 12px;
}
.logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -.02em;
}
.logo-text .sub {
  font-size: .85rem;
  font-weight: 500;
  color: var(--primary);
  margin-left: 2px;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 4px;
  box-shadow: var(--shadow-sm);
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 10px;
  font-size: .9rem;
  font-weight: 500;
  color: var(--body);
  transition: all .2s ease;
  white-space: nowrap;
}
.nav-link:hover {
  background: var(--primary-light);
  color: var(--primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.nav-link.active {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.nav-cta { display: flex; align-items: center; }
.btn-accent {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: #fff;
  font-size: .9rem;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(249, 115, 22, .25);
  transition: all .2s ease;
  white-space: nowrap;
}
.btn-accent:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(249, 115, 22, .35);
}
.btn-accent:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.mobile-cta { display: none; }
.mobile-toggle { display: none; }

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .85rem;
  color: var(--muted);
  padding: 28px 0 12px;
  flex-wrap: wrap;
}
.breadcrumb a { transition: color .2s; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--line); }
.breadcrumb .current {
  color: var(--muted);
  max-width: 360px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 文章包裹 */
.article-wrap {
  max-width: 860px;
  margin: 0 auto;
}

/* 文章头部卡片 */
.article-header {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px 48px;
  margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
}
.article-header h1 {
  font-size: 2.25rem;
  line-height: 1.35;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -.02em;
  margin-bottom: 18px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: .875rem;
  color: var(--muted);
}
.article-cat {
  display: inline-flex;
  align-items: center;
  background: var(--primary-light);
  color: var(--primary);
  font-size: .75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
}
.article-date {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-date svg {
  width: 15px;
  height: 15px;
  color: var(--muted);
}

/* 文章正文 */
.article-body {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 48px;
  box-shadow: var(--shadow-sm);
  font-size: 1rem;
  color: var(--body);
}
.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink);
  margin: 2rem 0 1rem;
  padding-bottom: .5rem;
  border-bottom: 2px solid var(--primary-light);
}
.article-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ink);
  margin: 1.5rem 0 .75rem;
}
.article-body p {
  line-height: 1.9;
  margin-bottom: 1.25em;
}
.article-body ul,
.article-body ol {
  margin: 1em 0 1.25em;
  padding-left: 1.5em;
}
.article-body ul li { list-style: disc; margin: .4em 0; }
.article-body ol li { list-style: decimal; margin: .4em 0; }
.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: var(--primary-light);
  padding: 16px 20px;
  border-radius: 0 12px 12px 0;
  margin: 1.5em 0;
  color: var(--ink);
}
.article-body img {
  border-radius: 12px;
  height: auto;
  margin: 1.5em 0;
}
.article-body a {
  color: var(--primary);
  font-weight: 500;
}
.article-body a:hover { text-decoration: underline; }
.article-body pre {
  background: #0F172A;
  color: #E2E8F0;
  padding: 20px;
  border-radius: 12px;
  overflow-x: auto;
  font-size: .875rem;
  line-height: 1.7;
  margin: 1.5em 0;
}
.article-body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .875em;
}
.article-body :not(pre) > code {
  background: var(--primary-light);
  color: var(--primary);
  padding: 2px 6px;
  border-radius: 6px;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: .9rem;
}
.article-body th,
.article-body td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
}
.article-body th {
  background: var(--primary-light);
  color: var(--ink);
  font-weight: 600;
}

/* 内容未找到 */
.not-found {
  text-align: center;
  padding: 80px 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.not-found .icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  font-size: 32px;
  font-weight: 800;
}
.not-found h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}
.not-found p {
  color: var(--muted);
  margin-bottom: 24px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: .9rem;
  padding: 12px 24px;
  border-radius: 10px;
  transition: all .2s ease;
  box-shadow: var(--shadow-md);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* 相关推荐 */
.recommend-section {
  margin-top: 48px;
}
.recommend-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}
.recommend-head h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 10px;
}
.recommend-head h2::before {
  content: "";
  width: 4px;
  height: 22px;
  background: var(--primary);
  border-radius: 4px;
}
.back-link {
  font-size: .875rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all .2s;
}
.back-link:hover {
  color: var(--primary-dark);
  gap: 10px;
}
.recommend-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.recommend-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all .25s ease;
  box-shadow: var(--shadow-sm);
}
.recommend-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}
.recommend-img {
  width: 100%;
  height: 140px;
  object-fit: cover;
}
.recommend-body {
  padding: 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.recommend-body h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.recommend-body p {
  font-size: .85rem;
  color: var(--muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
  flex: 1;
}
.recommend-time {
  font-size: .75rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.recommend-time svg {
  width: 13px;
  height: 13px;
}

/* CTA 面板 */
.cta-panel {
  margin: 48px auto 0;
  background: linear-gradient(135deg, var(--primary) 0%, #3B82F6 100%);
  border-radius: var(--radius);
  padding: 40px 48px;
  text-align: center;
  color: #fff;
  box-shadow: var(--shadow-lg);
}
.cta-panel h2 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 8px;
}
.cta-panel p {
  opacity: .9;
  margin-bottom: 24px;
  font-size: .95rem;
}
.btn-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--primary);
  font-weight: 700;
  font-size: .95rem;
  padding: 12px 28px;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, .1);
  transition: all .2s ease;
}
.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, .18);
}
.btn-white:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

/* 页脚 */
.site-footer {
  background: #0F172A;
  color: #94A3B8;
  margin-top: 64px;
  padding: 56px 0 0;
}
.footer-container {
  max-width: var(--width);
  margin: 0 auto;
  padding: 0 20px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .logo-text { color: #fff; }
.footer-brand .sub { color: #60A5FA; }
.footer-brand-desc {
  margin-top: 16px;
  font-size: .875rem;
  line-height: 1.8;
  max-width: 280px;
}
.footer-heading {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-links li,
.footer-contact li { margin-bottom: 10px; }
.footer-links a {
  font-size: .875rem;
  color: #94A3B8;
  transition: all .2s;
}
.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .875rem;
}
.footer-contact svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: #60A5FA;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 20px 0;
  text-align: center;
  font-size: .8rem;
  color: #64748B;
}

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

@media (max-width: 768px) {
  .desktop-cta { display: none; }
  .mobile-toggle {
    display: flex;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--line);
    border-radius: 12px;
    color: var(--ink);
    background: #fff;
    box-shadow: var(--shadow-sm);
    transition: all .2s;
  }
  .mobile-toggle:hover { border-color: var(--primary); color: var(--primary); }
  .mobile-cta { display: block; padding: 10px 4px 4px; }
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 16px;
    right: 16px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    box-shadow: 0 16px 40px rgba(15, 23, 42, .12);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all .25s ease;
    z-index: 60;
  }
  .nav-menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .nav-link {
    padding: 12px 14px;
  }
  .article-header {
    padding: 28px 24px;
  }
  .article-header h1 { font-size: 1.5rem; }
  .article-body { padding: 28px 20px; }
  .recommend-grid { grid-template-columns: 1fr; }
  .cta-panel { padding: 32px 24px; }
  .cta-panel h2 { font-size: 1.4rem; }
}

@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .header-inner { height: 64px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-brand-desc { max-width: 100%; }
  .breadcrumb .current { max-width: 220px; }
  .article-header { border-radius: 14px; }
  .article-body { border-radius: 14px; }
}

/* roulang page: category1 */
/* ========== 设计变量 ========== */
  :root {
    --primary: #2563EB;
    --primary-dark: #1D4ED8;
    --primary-light: #EFF6FF;
    --accent: #F97316;
    --accent-dark: #EA580C;
    --accent-light: #FFEDD5;
    --bg-body: #F8FAFC;
    --bg-white: #FFFFFF;
    --text-title: #1E293B;
    --text-body: #475569;
    --text-weak: #94A3B8;
    --border-color: #E2E8F0;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 10px;
    --shadow-xs: 0 1px 2px rgba(15, 23, 42, .04);
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, .07);
    --shadow-md: 0 8px 20px -4px rgba(15, 23, 42, .10);
    --shadow-lg: 0 20px 40px -8px rgba(15, 23, 42, .15);
    --transition: all .18s ease;
  }

  /* ========== 基础 Reset ========== */
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    background: var(--bg-body);
    color: var(--text-body);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }
  a { color: inherit; text-decoration: none; }
  img { max-width: 100%; display: block; }
  button { border: none; background: none; cursor: pointer; font: inherit; }
  input, select, textarea { font: inherit; }
  ul, ol { list-style: none; }

  /* ========== 容器 ========== */
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 16px;
    padding-right: 16px;
  }

  /* ========== 导航 Header ========== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-xs);
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 12px;
  }
  .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.28rem;
    color: var(--text-title);
    letter-spacing: -0.01em;
    white-space: nowrap;
  }
  .logo-icon {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 11px;
    background: linear-gradient(135deg, var(--primary) 0%, #3B82F6 100%);
    color: #fff;
    box-shadow: 0 4px 10px rgba(37, 99, 235, .25);
    transition: var(--transition);
  }
  .logo:hover .logo-icon { transform: rotate(-6deg) scale(1.05); }
  .logo-text { font-weight: 700; }
  .logo-text .sub {
    font-size: .72rem;
    font-weight: 400;
    color: var(--text-weak);
    margin-left: 3px;
    background: var(--primary-light);
    padding: 2px 7px;
    border-radius: 6px;
    vertical-align: 2px;
  }
  .nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
  }
  .nav-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 15px;
    border-radius: var(--radius-sm);
    font-size: .9rem;
    font-weight: 500;
    color: var(--text-body);
    transition: var(--transition);
  }
  .nav-link svg { opacity: .7; transition: var(--transition); }
  .nav-link:hover {
    background: var(--primary-light);
    color: var(--primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-xs);
  }
  .nav-link:hover svg { opacity: 1; }
  .nav-link.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(37, 99, 235, .28);
  }
  .nav-link.active svg { opacity: 1; }
  .nav-cta { display: flex; align-items: center; }
  .mobile-cta { display: none; }
  .btn-accent {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: var(--accent);
    color: #fff;
    font-size: .9rem;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    box-shadow: 0 3px 10px rgba(249, 115, 22, .28);
    transition: var(--transition);
    white-space: nowrap;
  }
  .btn-accent:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(249, 115, 22, .35);
  }
  .btn-accent:active { transform: translateY(0); }
  .btn-accent:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }
  .mobile-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    align-items: center;
    justify-content: center;
    color: var(--text-title);
    background: var(--bg-white);
    transition: var(--transition);
  }
  .mobile-toggle:hover { background: var(--primary-light); color: var(--primary); }

  /* ========== 面包屑 ========== */
  .breadcrumb-wrap {
    padding: 16px 0 0;
    background: transparent;
  }
  .breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: .85rem;
    color: var(--text-weak);
  }
  .breadcrumb a {
    color: var(--text-body);
    transition: var(--transition);
  }
  .breadcrumb a:hover { color: var(--primary); }
  .breadcrumb .sep { color: #CBD5E1; }
  .breadcrumb .current { color: var(--primary); font-weight: 500; }

  /* ========== Hero ========== */
  .hero {
    position: relative;
    background:
      linear-gradient(135deg, rgba(37, 99, 235, .10) 0%, rgba(248, 250, 252, .92) 45%, rgba(249, 115, 22, .05) 100%),
      url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    padding: 72px 0 64px;
    overflow: hidden;
  }
  .hero::before {
    content: '';
    position: absolute;
    width: 340px;
    height: 340px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37, 99, 235, .10), transparent 65%);
    top: -120px;
    right: -80px;
    pointer-events: none;
  }
  .hero::after {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    border: 2px solid rgba(249, 115, 22, .14);
    bottom: -70px;
    left: 45%;
    pointer-events: none;
  }
  .hero-inner {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 48px;
    align-items: center;
  }
  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, .85);
    border: 1px solid rgba(37, 99, 235, .15);
    color: var(--primary);
    font-size: .8rem;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 999px;
    box-shadow: var(--shadow-xs);
    margin-bottom: 18px;
  }
  .hero-badge svg { width: 15px; height: 15px; }
  .hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.12;
    color: var(--text-title);
    letter-spacing: -0.02em;
    margin-bottom: 14px;
  }
  .hero h1 .highlight {
    background: linear-gradient(135deg, var(--primary), #3B82F6);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }
  .hero-lead {
    font-size: 1.05rem;
    color: var(--text-body);
    line-height: 1.85;
    margin-bottom: 26px;
    max-width: 460px;
  }
  .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: var(--primary);
    color: #fff;
    font-size: .92rem;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 14px rgba(37, 99, 235, .28);
    transition: var(--transition);
  }
  .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, .32);
  }
  .btn-primary:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
  .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: #fff;
    color: var(--text-title);
    font-size: .92rem;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xs);
    transition: var(--transition);
  }
  .btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }
  .hero-media {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 6px solid #fff;
    transform: rotate(1.2deg);
    transition: var(--transition);
  }
  .hero-media:hover { transform: rotate(0deg) scale(1.01); }
  .hero-media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; }
  .hero-media .media-tag {
    position: absolute;
    left: 14px;
    bottom: 14px;
    background: rgba(255, 255, 255, .92);
    border-radius: 999px;
    padding: 6px 14px;
    font-size: .78rem;
    font-weight: 600;
    color: var(--primary);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(6px);
  }

  /* ========== 板块标题 ========== */
  .section {
    padding: 72px 0;
  }
  .section-alt { background: var(--bg-white); }
  .section-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 44px;
  }
  .section-head .eyebrow {
    display: inline-block;
    font-size: .78rem;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 14px;
    border-radius: 999px;
    margin-bottom: 12px;
    letter-spacing: .02em;
  }
  .section-head h2 {
    font-size: clamp(1.5rem, 2.6vw, 2rem);
    font-weight: 800;
    color: var(--text-title);
    line-height: 1.25;
    margin-bottom: 10px;
  }
  .section-head p {
    font-size: .95rem;
    color: var(--text-body);
    line-height: 1.7;
  }

  /* ========== 数据条 ========== */
  .stats-bar {
    padding: 28px 0;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
  }
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }
  .stat-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    background: var(--bg-body);
    border: 1px solid var(--border-color);
    transition: var(--transition);
  }
  .stat-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
  .stat-icon {
    width: 46px;
    height: 46px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--primary-light);
    color: var(--primary);
  }
  .stat-num {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-title);
    line-height: 1.2;
  }
  .stat-label { font-size: .82rem; color: var(--text-weak); line-height: 1.4; }

  /* ========== 服务卡片 ========== */
  .card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .service-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow-xs);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
  }
  .service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(37, 99, 235, .22);
  }
  .service-card .card-media {
    position: relative;
    overflow: hidden;
    aspect-ratio: 3/2;
  }
  .service-card .card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
  }
  .service-card:hover .card-media img { transform: scale(1.05); }
  .service-card .card-media .tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(37, 99, 235, .9);
    color: #fff;
    font-size: .72rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 999px;
    backdrop-filter: blur(4px);
  }
  .service-card .card-body { padding: 22px 22px 24px; flex: 1; display: flex; flex-direction: column; }
  .service-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: 8px;
  }
  .service-card p {
    font-size: .87rem;
    color: var(--text-body);
    line-height: 1.7;
    flex: 1;
    margin-bottom: 16px;
  }
  .card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: .86rem;
    font-weight: 600;
    color: var(--primary);
    transition: var(--transition);
  }
  .card-link svg { transition: transform .18s ease; }
  .card-link:hover { color: var(--primary-dark); gap: 9px; }
  .card-link:hover svg { transform: translateX(2px); }

  /* ========== 适用场景 ========== */
  .scenario-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .scenario-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 32px 26px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
  }
  .scenario-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), #60A5FA);
    opacity: 0;
    transition: var(--transition);
  }
  .scenario-card:hover::before { opacity: 1; }
  .scenario-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
  .scenario-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: var(--primary-light);
    color: var(--primary);
    margin-bottom: 18px;
    transition: var(--transition);
  }
  .scenario-card:hover .scenario-icon { background: var(--primary); color: #fff; }
  .scenario-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--text-title); margin-bottom: 8px; }
  .scenario-card p { font-size: .88rem; color: var(--text-body); line-height: 1.75; }

  /* ========== 服务流程 ========== */
  .process-section { background: var(--primary-light); }
  .process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    position: relative;
  }
  .process-steps::before {
    content: '';
    position: absolute;
    top: 38px;
    left: 12%;
    right: 12%;
    height: 2px;
    background: rgba(37, 99, 235, .18);
  }
  .step-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 28px 20px;
    text-align: center;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xs);
    position: relative;
    z-index: 2;
    transition: var(--transition);
  }
  .step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(37, 99, 235, .25); }
  .step-num {
    width: 46px;
    height: 46px;
    margin: 0 auto 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    font-weight: 800;
    font-size: 1.05rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, .3);
  }
  .step-card:nth-child(2) .step-num { background: #3B82F6; }
  .step-card:nth-child(3) .step-num { background: #60A5FA; }
  .step-card:nth-child(4) .step-num { background: var(--accent); box-shadow: 0 4px 12px rgba(249, 115, 22, .3); }
  .step-card h3 { font-size: .98rem; font-weight: 700; color: var(--text-title); margin-bottom: 6px; }
  .step-card p { font-size: .82rem; color: var(--text-weak); line-height: 1.65; }

  /* ========== FAQ ========== */
  .faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
  }
  .faq-item {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xs);
    transition: var(--transition);
    overflow: hidden;
  }
  .faq-item:hover { border-color: rgba(37, 99, 235, .3); box-shadow: var(--shadow-sm); }
  .faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 22px;
    font-size: .95rem;
    font-weight: 600;
    color: var(--text-title);
    cursor: pointer;
    list-style: none;
    transition: var(--transition);
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary .icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 1.05rem;
    font-weight: 600;
    transition: var(--transition);
  }
  .faq-item[open] summary .icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
  .faq-item .faq-answer {
    padding: 0 22px 18px;
    font-size: .88rem;
    color: var(--text-body);
    line-height: 1.8;
  }

  /* ========== CTA + 表单 ========== */
  .contact-section { background: var(--bg-white); }
  .contact-card {
    background: var(--bg-body);
    border-radius: 24px;
    border: 1px solid var(--border-color);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
  }
  .contact-info {
    background: linear-gradient(150deg, var(--primary) 0%, #3B82F6 100%);
    color: #fff;
    padding: 42px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .contact-info h2 { font-size: 1.55rem; font-weight: 800; line-height: 1.3; margin-bottom: 12px; }
  .contact-info .sub-text { font-size: .9rem; opacity: .86; line-height: 1.8; margin-bottom: 26px; }
  .contact-lines { display: flex; flex-direction: column; gap: 13px; }
  .contact-line {
    display: flex;
    align-items: center;
    gap: 11px;
    font-size: .9rem;
    opacity: .95;
  }
  .contact-line svg { width: 17px; height: 17px; opacity: .8; flex-shrink: 0; }
  .contact-form-wrap { padding: 42px 40px; }
  .contact-form-wrap h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-title); margin-bottom: 18px; }
  .form-group { margin-bottom: 18px; }
  .form-group label {
    display: block;
    font-size: .84rem;
    font-weight: 600;
    color: var(--text-title);
    margin-bottom: 6px;
  }
  .form-input {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid #CBD5E1;
    border-radius: var(--radius-sm);
    font-size: .9rem;
    color: var(--text-title);
    background: #fff;
    transition: var(--transition);
  }
  .form-input::placeholder { color: var(--text-weak); }
  .form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
  }
  .radio-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .radio-card {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: #fff;
    font-size: .85rem;
    font-weight: 500;
    color: var(--text-body);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
  }
  .radio-card input { position: absolute; opacity: 0; pointer-events: none; }
  .radio-card:has(input:checked) {
    border-color: var(--primary);
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
    box-shadow: 0 0 0 2px rgba(37, 99, 235, .12);
  }
  .radio-card:hover { border-color: var(--primary); color: var(--primary); }
  .btn-submit {
    width: 100%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--primary);
    color: #fff;
    font-size: .95rem;
    font-weight: 600;
    padding: 13px 24px;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 14px rgba(37, 99, 235, .3);
    transition: var(--transition);
    margin-top: 6px;
  }
  .btn-submit:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(37, 99, 235, .35); }
  .btn-submit:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }

  /* ========== 页脚 ========== */
  .site-footer {
    background: #0F172A;
    color: #94A3B8;
    padding: 56px 0 0;
  }
  .footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.4fr;
    gap: 40px;
    padding-bottom: 40px;
  }
  .footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.3rem;
    color: #F1F5F9;
    margin-bottom: 14px;
  }
  .footer-brand .logo-icon {
    background: linear-gradient(135deg, var(--primary), #3B82F6);
    width: 36px;
    height: 36px;
    border-radius: 10px;
  }
  .footer-brand .logo-text .sub {
    background: rgba(255, 255, 255, .12);
    color: #94A3B8;
  }
  .footer-brand-desc {
    font-size: .85rem;
    line-height: 1.8;
    color: #94A3B8;
    max-width: 320px;
  }
  .footer-heading {
    font-size: .95rem;
    font-weight: 700;
    color: #F1F5F9;
    margin-bottom: 16px;
  }
  .footer-links { display: flex; flex-direction: column; gap: 9px; }
  .footer-links a {
    font-size: .86rem;
    color: #94A3B8;
    transition: var(--transition);
  }
  .footer-links a:hover { color: #fff; padding-left: 4px; }
  .footer-contact { display: flex; flex-direction: column; gap: 12px; }
  .footer-contact li {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: .85rem;
    color: #94A3B8;
    line-height: 1.5;
  }
  .footer-contact svg {
    width: 16px;
    height: 16px;
    opacity: .7;
    flex-shrink: 0;
  }
  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .08);
    padding: 20px 0 24px;
    text-align: center;
    font-size: .8rem;
    color: #64748B;
  }
  .footer-bottom a { color: #94A3B8; }
  .footer-bottom a:hover { color: #fff; }

  /* ========== 响应式断点 ========== */
  @media (max-width: 1024px) {
    .hero { padding: 56px 0 48px; }
    .hero-inner { grid-template-columns: 1fr; gap: 32px; }
    .hero-media { max-width: 600px; }
    .card-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  }
  @media (max-width: 768px) {
    .site-header { position: sticky; }
    .header-inner { height: 64px; }
    .desktop-cta { display: none; }
    .mobile-toggle { display: flex; }
    .nav-menu {
      position: fixed;
      top: 64px;
      left: 0;
      right: 0;
      background: #fff;
      flex-direction: column;
      align-items: stretch;
      padding: 16px 16px 20px;
      gap: 8px;
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-lg);
      transform: translateY(-120%);
      opacity: 0;
      pointer-events: none;
      transition: all .25s ease;
      z-index: 99;
      max-height: calc(100vh - 64px);
      overflow-y: auto;
    }
    .nav-menu.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .nav-link { width: 100%; padding: 13px 15px; font-size: .95rem; }
    .mobile-cta { display: block; }
    .mobile-cta .btn-accent { width: 100%; justify-content: center; }
    .breadcrumb-wrap { padding-top: 12px; }
    .hero { padding: 44px 0 36px; }
    .hero h1 { font-size: 1.9rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .section { padding: 52px 0; }
    .card-grid { grid-template-columns: 1fr; }
    .scenario-grid { grid-template-columns: 1fr; }
    .process-steps { grid-template-columns: 1fr 1fr; gap: 16px; }
    .process-steps::before { display: none; }
    .contact-card { grid-template-columns: 1fr; }
    .contact-info { padding: 32px 26px; }
    .contact-form-wrap { padding: 32px 26px; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .radio-group { grid-template-columns: 1fr 1fr; }
  }
  @media (max-width: 520px) {
    .container { padding-left: 14px; padding-right: 14px; }
    .header-inner { gap: 8px; }
    .logo { font-size: 1.08rem; }
    .logo-icon { width: 32px; height: 32px; border-radius: 9px; }
    .logo-text .sub { font-size: .62rem; padding: 1px 5px; }
    .hero h1 { font-size: 1.65rem; }
    .hero-lead { font-size: .95rem; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .btn-primary, .hero-actions .btn-secondary { justify-content: center; width: 100%; }
    .stats-grid { gap: 10px; }
    .stat-item { padding: 12px 14px; gap: 10px; }
    .stat-num { font-size: 1.1rem; }
    .stat-icon { width: 38px; height: 38px; }
    .process-steps { grid-template-columns: 1fr; }
    .section-head { margin-bottom: 32px; }
    .radio-group { grid-template-columns: 1fr; }
    .footer-container { padding: 0 14px; }
  }