/* roulang page: index */
:root {
  --blue-primary: #2B7FD1;
  --blue-hover: #1E5F9E;
  --blue-light: #E8F1F8;
  --blue-pale: #F4F8FC;
  --peach: #FFB07A;
  --peach-light: #FFF1E8;
  --peach-deep: #FA6B3B;
  --text-main: #1A2A3A;
  --text-secondary: #5A6B7B;
  --border-light: #E5ECF2;
  --bg-white: #FFFFFF;
  --success: #21A67A;
  --warning: #E6A23C;
  --error: #D64545;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --shadow-card: 0 2px 8px rgba(26,42,58,0.06);
  --shadow-hover: 0 8px 24px rgba(26,42,58,0.12);
  --shadow-highlight: 0 12px 32px rgba(26,42,58,0.14);
  --font-main: "PingFang SC", "Microsoft YaHei", "Segoe UI", "Helvetica Neue", sans-serif;
  --space-section: 80px;
  --space-section-mobile: 48px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin:0; font-family: var(--font-main); font-size:16px; line-height:1.7; color:var(--text-main); background:var(--bg-white); overflow-x:hidden; }
img { max-width:100%; display:block; }
a { color:var(--blue-primary); text-decoration:none; transition:color .2s ease; }
a:hover { color:var(--blue-hover); }
ul, ol { margin:0; padding:0; list-style:none; }
h1,h2,h3,h4 { margin:0 0 .5em; line-height:1.3; font-weight:700; color:var(--text-main); }
p { margin:0 0 1em; }
button, input, textarea { font-family:inherit; font-size:inherit; }
.row { max-width:100%; width:100%; margin:0 auto; }
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
section { padding:var(--space-section) 0; }
.section-head { text-align:center; margin-bottom:48px; }
.sec-tag { display:inline-block; background:var(--peach-light); color:var(--peach-deep); font-size:13px; font-weight:600; padding:4px 14px; border-radius:var(--radius-badge); margin-bottom:14px; }
.section-head h2 { font-size:32px; margin-bottom:12px; }
.section-head p { color:var(--text-secondary); max-width:640px; margin:0 auto; font-size:15px; }
.btn { display:inline-flex; align-items:center; justify-content:center; gap:8px; border-radius:var(--radius-btn); padding:13px 30px; font-weight:600; font-size:15px; line-height:1.2; border:1px solid transparent; cursor:pointer; transition:all .25s ease; text-align:center; }
.btn-primary { background:var(--blue-primary); color:#fff; }
.btn-primary:hover { background:var(--blue-hover); transform:translateY(-1px); box-shadow:var(--shadow-card); color:#fff; }
.btn-primary:active { transform:translateY(0); }
.btn-outline { background:#fff; border-color:var(--blue-primary); color:var(--blue-primary); }
.btn-outline:hover { background:var(--blue-light); border-color:var(--blue-hover); color:var(--blue-hover); transform:translateY(-1px); }
.btn-cta { background:var(--peach-deep); color:#fff; }
.btn-cta:hover { filter:brightness(0.95); transform:translateY(-1px); box-shadow:var(--shadow-card); color:#fff; }
.btn-cta:active { transform:translateY(0); }
.btn:focus-visible, a:focus-visible, button:focus-visible { outline:2px solid var(--blue-primary); outline-offset:2px; }
.badge { display:inline-flex; align-items:center; padding:3px 12px; border-radius:var(--radius-badge); font-size:12px; font-weight:600; line-height:1.6; }
.badge-gray { background:#F1F4F8; color:#5A6B7B; }
.badge-blue { background:var(--blue-light); color:var(--blue-primary); }
.badge-peach { background:var(--peach-light); color:var(--peach-deep); }
.badge-green { background:#E7F7F0; color:var(--success); }
.badge-warning { background:#FDF3E0; color:var(--warning); }

/* Header */
.site-header { position:sticky; top:0; z-index:100; background:rgba(255,255,255,0.96); backdrop-filter:blur(8px); border-bottom:1px solid var(--border-light); box-shadow:0 2px 12px rgba(26,42,58,0.06); height:72px; }
.header-inner { display:flex; align-items:center; justify-content:space-between; height:72px; gap:20px; }
.brand { display:flex; align-items:center; gap:10px; font-size:18px; font-weight:700; color:var(--text-main); flex-shrink:0; }
.brand:hover { color:var(--text-main); }
.brand svg { width:32px; height:32px; flex-shrink:0; }
.main-nav { display:flex; gap:8px; margin:0 auto; }
.main-nav a { font-size:15px; font-weight:500; color:var(--text-secondary); padding:24px 16px; border-bottom:2px solid transparent; white-space:nowrap; }
.main-nav a:hover { color:var(--blue-primary); }
.main-nav a.active { color:var(--blue-primary); border-bottom-color:var(--blue-primary); font-weight:600; }
.header-actions { display:flex; align-items:center; gap:12px; flex-shrink:0; }
.node-selector { position:relative; }
.node-btn { display:inline-flex; align-items:center; gap:6px; background:var(--blue-light); border:1px solid transparent; border-radius:var(--radius-btn); padding:9px 16px; font-size:14px; font-weight:600; color:var(--blue-primary); cursor:pointer; transition:all .2s ease; }
.node-btn:hover { background:var(--blue-pale); border-color:var(--blue-primary); }
.node-btn.active { background:#fff; border-color:var(--blue-primary); color:var(--blue-primary); }
.node-panel { position:absolute; right:0; top:calc(100% + 10px); width:290px; background:#fff; border:1px solid var(--border-light); border-radius:var(--radius-card); box-shadow:var(--shadow-highlight); padding:18px; display:none; z-index:300; }
.node-panel.open { display:block; animation:fadeIn .2s ease; }
@keyframes fadeIn { from { opacity:0; transform:translateY(-6px); } to { opacity:1; transform:translateY(0); } }
.node-panel h4 { font-size:14px; font-weight:600; color:var(--text-main); margin-bottom:12px; display:flex; align-items:center; gap:8px; }
.node-list li { display:flex; justify-content:space-between; align-items:center; padding:9px 10px; border-radius:8px; transition:background .2s; }
.node-list li:hover { background:var(--blue-pale); }
.node-name { display:flex; align-items:center; gap:8px; font-size:14px; color:var(--text-main); font-weight:500; }
.hamburger { display:none; background:none; border:1px solid var(--border-light); border-radius:8px; padding:10px 12px; cursor:pointer; }
.hamburger span { display:block; width:20px; height:2px; background:var(--text-main); margin:4px 0; border-radius:2px; transition:all .3s; }

/* Hero */
.hero { position:relative; padding:72px 0 80px; background:var(--bg-white); overflow:hidden; }
.hero-bg { position:absolute; inset:0; background:url('/assets/images/backpic/back-1.jpg') center/cover no-repeat; opacity:.13; pointer-events:none; }
.hero::after { content:''; position:absolute; inset:0; background:linear-gradient(90deg, rgba(255,255,255,.85) 0%, rgba(255,255,255,.55) 60%, rgba(255,255,255,.3) 100%); pointer-events:none; }
.hero-inner { position:relative; z-index:2; display:flex; align-items:center; gap:56px; }
.hero-copy { flex:1.05; }
.hero-visual { flex:1; }
.hero-version { display:inline-flex; align-items:center; gap:8px; background:var(--blue-light); color:var(--blue-primary); border-radius:var(--radius-badge); padding:5px 14px; font-size:13px; font-weight:600; }
.hero h1 { font-size:44px; line-height:1.3; margin:20px 0 16px; letter-spacing:.5px; }
.hero-sub { font-size:18px; color:var(--text-secondary); margin-bottom:32px; line-height:1.6; }
.hero-actions { display:flex; flex-wrap:wrap; gap:16px; }
.hero-badge-row { display:flex; flex-wrap:wrap; gap:8px; margin-top:28px; }
.hero-badge-row .badge { background:var(--blue-pale); color:var(--text-secondary); font-weight:500; }
.hero-visual .vis-card { position:relative; border-radius:var(--radius-card); border:1px solid var(--border-light); overflow:hidden; box-shadow:var(--shadow-card); background:#F7FAFC; }
.hero-visual .vis-card img { width:100%; height:420px; object-fit:cover; }
.vis-bar { position:absolute; bottom:0; left:0; right:0; height:3px; background:var(--peach); }
.hero-float { position:absolute; top:20px; right:20px; display:flex; flex-direction:column; gap:8px; z-index:3; }
.float-item { background:rgba(255,255,255,.94); border-radius:10px; padding:10px 14px; font-size:12px; color:var(--text-secondary); box-shadow:var(--shadow-card); display:flex; align-items:center; gap:8px; }
.float-item .num { font-size:18px; font-weight:700; color:var(--blue-primary); line-height:1.2; }

/* Features */
.features-section { background:var(--bg-white); }
.feature-col { margin-bottom:24px; }
.feature-card { background:#fff; border:1px solid var(--border-light); border-radius:var(--radius-card); padding:28px 24px; box-shadow:var(--shadow-card); transition:all .3s ease; position:relative; height:100%; }
.feature-card::before { content:''; position:absolute; top:0; left:0; right:0; height:2px; background:var(--peach); opacity:0; transition:opacity .3s; border-radius:var(--radius-card) var(--radius-card) 0 0; }
.feature-card:hover { box-shadow:var(--shadow-hover); border-color:#C9D8E6; transform:translateY(-4px); }
.feature-card:hover::before { opacity:1; }
.feature-icon { width:48px; height:48px; border-radius:10px; background:var(--blue-light); display:flex; align-items:center; justify-content:center; margin-bottom:16px; transition:background .3s; }
.feature-icon svg { width:24px; height:24px; stroke:var(--blue-primary); fill:none; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; transition:stroke .3s; }
.feature-card h3 { font-size:18px; margin-bottom:8px; }
.feature-card p { font-size:14px; color:var(--text-secondary); line-height:1.7; margin:0; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.feature-banner { display:flex; align-items:center; justify-content:space-between; gap:32px; padding:32px 36px; }
.fb-left { display:flex; align-items:center; gap:20px; }
.fb-left .feature-icon { margin:0; }
.fb-content h3 { font-size:18px; margin-bottom:6px; }
.fb-content p { font-size:14px; color:var(--text-secondary); margin:0; max-width:640px; }
.fb-link { display:inline-flex; align-items:center; gap:6px; font-size:15px; font-weight:600; color:var(--blue-primary); white-space:nowrap; }
.fb-link svg { width:16px; height:16px; stroke:var(--blue-primary); transition:transform .3s; }
.fb-link:hover svg { transform:translateX(4px); }

/* Stats */
.stats-section { background:var(--blue-pale); }
.quote-block { display:flex; gap:14px; margin-bottom:44px; max-width:820px; margin-left:auto; margin-right:auto; }
.quote-block .line { width:4px; background:var(--peach); border-radius:2px; flex-shrink:0; }
.quote-block p { font-style:italic; font-size:14px; color:var(--text-secondary); margin:0; line-height:1.8; }
.stat-col { margin-bottom:24px; }
.stat-card { background:#fff; border:1px solid var(--border-light); border-radius:var(--radius-card); padding:28px 20px 24px; text-align:center; box-shadow:var(--shadow-card); height:100%; transition:box-shadow .3s; }
.stat-card:hover { box-shadow:var(--shadow-hover); }
.stat-num { font-size:48px; font-weight:700; color:var(--blue-primary); line-height:1.2; }
.stat-label { font-size:13px; color:var(--text-secondary); margin-top:4px; }
.stat-bar { height:4px; background:var(--blue-light); border-radius:999px; margin-top:18px; overflow:hidden; }
.stat-bar span { display:block; height:100%; background:var(--peach); border-radius:999px; }

/* News */
.news-section { background:var(--bg-white); }
.news-card { background:#fff; border:1px solid var(--border-light); border-radius:var(--radius-card); box-shadow:var(--shadow-card); overflow:hidden; height:100%; }
.news-card .news-header { display:flex; justify-content:space-between; align-items:center; padding:20px 24px; border-bottom:1px solid var(--border-light); }
.news-card .news-header h3 { font-size:16px; margin:0; }
.news-card .news-header a { font-size:13px; font-weight:500; }
.news-item { display:flex; justify-content:space-between; align-items:center; padding:15px 24px; border-bottom:1px solid var(--border-light); transition:background .2s; }
.news-item:last-child { border-bottom:none; }
.news-item:hover { background:var(--blue-pale); }
.news-item a { font-size:15px; font-weight:600; color:var(--text-main); flex:1; }
.news-item a:hover { color:var(--blue-primary); }
.news-meta { font-size:13px; color:var(--text-secondary); flex-shrink:0; margin-left:16px; }
.side-card { background:#fff; border:1px solid var(--border-light); border-radius:var(--radius-card); box-shadow:var(--shadow-card); padding:22px 24px; margin-bottom:24px; }
.side-card h3 { font-size:16px; margin-bottom:14px; padding-bottom:10px; border-bottom:1px solid var(--border-light); }
.tag-cloud { display:flex; flex-wrap:wrap; gap:8px; }
.tag-cloud a { background:var(--blue-pale); color:var(--text-secondary); font-size:13px; padding:5px 12px; border-radius:999px; transition:all .2s; }
.tag-cloud a:hover { background:var(--blue-light); color:var(--blue-primary); }
.hot-links li { padding:10px 0; border-bottom:1px solid var(--border-light); }
.hot-links li:last-child { border-bottom:none; }
.hot-links a { font-size:14px; color:var(--text-secondary); display:flex; align-items:center; gap:8px; transition:all .2s; }
.hot-links a::before { content:''; width:4px; height:4px; border-radius:50%; background:var(--peach); flex-shrink:0; }
.hot-links a:hover { color:var(--blue-primary); transform:translateX(4px); }

/* Scenarios */
.scenarios-section { background:var(--blue-pale); }
.scenario-col { margin-bottom:24px; }
.scenario-card { background:#fff; border:1px solid var(--border-light); border-radius:var(--radius-card); overflow:hidden; box-shadow:var(--shadow-card); height:100%; transition:all .3s; }
.scenario-card:hover { box-shadow:var(--shadow-hover); transform:translateY(-3px); }
.scenario-img { height:180px; overflow:hidden; background:#F7FAFC; border-bottom:1px solid var(--border-light); }
.scenario-img img { width:100%; height:100%; object-fit:cover; transition:transform .4s; }
.scenario-card:hover .scenario-img img { transform:scale(1.03); }
.scenario-body { padding:24px; }
.scenario-body h3 { font-size:18px; margin-bottom:8px; }
.scenario-body p { font-size:14px; color:var(--text-secondary); margin-bottom:0; }
.scenario-tags { display:flex; flex-wrap:wrap; gap:8px; margin-top:14px; }
.scenario-wide .scenario-img { height:300px; }
.scenario-wide .scenario-body { display:flex; align-items:flex-start; justify-content:space-between; gap:32px; }
.scenario-wide .scenario-body .sc-text { flex:1; }
.scenario-wide .scenario-body h3 { font-size:20px; }
.scenario-wide .scenario-body p { max-width:720px; }

/* Pricing */
.pricing-col { margin-bottom:24px; }
.pricing-card { display:flex; flex-direction:column; background:#fff; border:1px solid var(--border-light); border-radius:var(--radius-card); padding:34px 28px 28px; box-shadow:var(--shadow-card); height:100%; position:relative; transition:all .3s; text-align:center; }
.pricing-card:hover { box-shadow:var(--shadow-hover); }
.pricing-card.featured { border:2px solid var(--blue-primary); box-shadow:var(--shadow-highlight); transform:translateY(-8px); }
.pricing-card.featured::before { content:''; position:absolute; top:0; left:0; right:0; height:4px; background:linear-gradient(90deg, var(--peach), var(--peach-deep)); border-radius:var(--radius-card) var(--radius-card) 0 0; }
.plan-badge { position:absolute; top:16px; right:16px; }
.plan-name { font-size:18px; font-weight:600; margin-bottom:4px; }
.plan-sub { font-size:13px; color:var(--text-secondary); }
.plan-price { margin:20px 0 22px; }
.plan-price .price { font-size:40px; font-weight:700; color:var(--text-main); line-height:1.2; }
.plan-price .unit { font-size:14px; color:var(--text-secondary); margin-left:2px; }
.plan-features { list-style:none; margin:0 0 28px; flex-grow:1; text-align:left; }
.plan-features li { display:flex; align-items:flex-start; gap:10px; padding:7px 0; font-size:15px; color:var(--text-secondary); }
.plan-features li svg { flex-shrink:0; width:16px; height:16px; margin-top:5px; stroke:var(--blue-primary); fill:none; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; }
.pricing-card .btn { width:100%; margin-top:auto; }
.team-note { font-size:13px; color:var(--text-secondary); margin-top:14px; }

/* Trust */
.trust-section { background:var(--bg-white); }
.trust-grid { display:grid; grid-template-columns:repeat(4, 1fr); gap:24px; }
.trust-item { background:#fff; border:1px solid var(--border-light); border-radius:var(--radius-card); padding:26px 24px; display:flex; align-items:flex-start; gap:16px; box-shadow:var(--shadow-card); transition:all .3s; }
.trust-item:hover { box-shadow:var(--shadow-hover); transform:translateY(-3px); }
.trust-icon { width:44px; height:44px; border-radius:10px; background:var(--peach-light); display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.trust-icon svg { width:22px; height:22px; stroke:var(--peach-deep); fill:none; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; }
.trust-item h3 { font-size:16px; margin-bottom:6px; }
.trust-item p { font-size:13px; color:var(--text-secondary); margin:0; line-height:1.6; }

/* FAQ */
.faq-section { background:var(--blue-pale); }
.faq-wrap { max-width:880px; margin:0 auto; }
.faq-note { text-align:center; color:var(--text-secondary); font-size:15px; margin-bottom:28px; }
.accordion { border:1px solid var(--border-light); border-radius:var(--radius-card); background:#fff; box-shadow:var(--shadow-card); overflow:hidden; }
.accordion-item { border-bottom:1px solid var(--border-light); transition:background .2s; }
.accordion-item:last-child { border-bottom:none; }
.accordion-item .accordion-title { display:flex; justify-content:space-between; align-items:center; padding:18px 22px; font-size:16px; font-weight:600; color:var(--text-main); background:transparent; border:none; cursor:pointer; transition:all .3s; line-height:1.4; }
.accordion-item .accordion-title:hover { background:var(--blue-pale); color:var(--blue-primary); }
.accordion-item.is-active .accordion-title { background:var(--blue-pale); color:var(--blue-primary); }
.accordion-item .accordion-title::after { content:''; width:10px; height:10px; border-right:2px solid var(--text-secondary); border-bottom:2px solid var(--text-secondary); transform:rotate(45deg); flex-shrink:0; transition:transform .3s; margin-left:12px; }
.accordion-item.is-active .accordion-title::after { transform:rotate(-135deg); border-color:var(--blue-primary); }
.accordion-content { padding:0 22px 20px; font-size:15px; color:var(--text-secondary); line-height:1.8; }

/* Contact */
.contact-section { background:var(--bg-white); }
.contact-grid { display:flex; flex-wrap:wrap; }
.contact-info .info-item { display:flex; align-items:flex-start; gap:14px; padding:12px 0; font-size:15px; color:var(--text-secondary); }
.info-item svg { width:20px; height:20px; stroke:var(--blue-primary); fill:none; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; flex-shrink:0; margin-top:3px; }
.info-item strong { display:block; color:var(--text-main); font-size:14px; font-weight:600; margin-bottom:2px; }
.contact-form-wrap { background:#fff; border:1px solid var(--border-light); border-radius:var(--radius-card); box-shadow:var(--shadow-card); padding:34px; }
.form-field { margin-bottom:20px; }
.form-field label { display:block; font-size:14px; font-weight:600; margin-bottom:6px; color:var(--text-main); }
.form-field input, .form-field textarea { width:100%; background:#fff; border:1px solid #D5E1EC; border-radius:var(--radius-btn); padding:13px 14px; font-size:15px; color:var(--text-main); transition:border .2s, box-shadow .2s; }
.form-field textarea { min-height:110px; resize:vertical; }
.form-field input:focus, .form-field textarea:focus { outline:none; border:2px solid var(--blue-primary); box-shadow:0 0 0 3px rgba(43,127,209,.15); padding:12px 13px; }
.form-field input.is-success, .form-field textarea.is-success { border-color:var(--success); }
.form-field input.is-error, .form-field textarea.is-error { border-color:var(--error); }
.form-msg { font-size:14px; margin-top:8px; display:flex; align-items:center; gap:6px; }
.form-msg.success { color:var(--success); }
.form-msg.error { color:var(--error); }
.contact-form-wrap .btn { width:100%; }

/* Footer */
.site-footer { background:#1A2A3A; color:#A8B4C0; margin-top:0; }
.site-footer .footer-top { padding:60px 0 40px; }
.site-footer .row { display:flex; flex-wrap:wrap; }
.footer-col { margin-bottom:24px; }
.footer-col h4 { font-size:15px; color:#fff; margin-bottom:14px; font-weight:600; }
.footer-col a { display:block; color:#A8B4C0; font-size:14px; padding:5px 0; transition:color .2s, padding-left .2s; }
.footer-col a:hover { color:#fff; padding-left:4px; }
.footer-brand .brand { color:#fff; margin-bottom:8px; }
.footer-brand .brand:hover { color:#fff; }
.footer-brand p { font-size:14px; line-height:1.8; margin-top:12px; color:#A8B4C0; }
.footer-bottom { border-top:1px solid rgba(255,255,255,.1); padding:20px 0; text-align:center; font-size:13px; color:#7E8C99; }
.footer-bottom a { color:#7E8C99; }
.footer-bottom a:hover { color:#fff; }

/* Responsive */
@media (max-width: 1023px) {
  section { padding:64px 0; }
  .hero-inner { flex-direction:column; gap:44px; }
  .hero h1 { font-size:36px; }
  .hero-visual .vis-card img { height:340px; }
  .trust-grid { grid-template-columns:repeat(2, 1fr); }
  .features-grid .columns.medium-4 { width:50%; }
  .stat-col.columns.medium-3 { width:50%; }
  .scenario-col.columns.medium-6 { width:100%; }
  .pricing-col.columns.medium-4 { width:100%; max-width:480px; margin-left:auto; margin-right:auto; }
  .pricing-card.featured { transform:none; }
  .feature-banner { flex-direction:column; align-items:flex-start; }
  .fb-link { margin-top:12px; }
}
@media (max-width: 767px) {
  section { padding:var(--space-section-mobile) 0; }
  .site-header, .header-inner { height:60px; }
  .brand { font-size:17px; }
  .main-nav { display:none; position:absolute; top:60px; left:0; right:0; background:#fff; border-bottom:1px solid var(--border-light); box-shadow:var(--shadow-hover); flex-direction:column; padding:8px 24px 16px; gap:0; z-index:99; }
  .main-nav.open { display:flex; }
  .main-nav a { padding:13px 0; border-bottom:1px solid var(--border-light); border-top:none; }
  .main-nav a:last-child { border-bottom:none; }
  .hamburger { display:block; }
  .node-panel { right:-60px; width:270px; }
  .hero { padding:48px 0; }
  .hero h1 { font-size:30px; }
  .hero-sub { font-size:16px; }
  .hero-actions { flex-direction:column; }
  .hero-actions .btn { width:100%; }
  .hero-visual .vis-card img { height:240px; }
  .hero-float { top:10px; right:10px; }
  .float-item { padding:6px 10px; }
  .float-item .num { font-size:15px; }
  .section-head h2 { font-size:26px; }
  .features-grid .columns { width:100%; }
  .stat-col.columns.medium-3 { width:100%; }
  .trust-grid { grid-template-columns:1fr; }
  .news-item { flex-direction:column; align-items:flex-start; gap:4px; }
  .news-meta { margin-left:0; }
  .scenario-wide .scenario-img { height:200px; }
  .scenario-wide .scenario-body { flex-direction:column; gap:16px; }
  .pricing-card.featured { transform:none; }
  .contact-form-wrap { padding:24px; }
  .site-footer .footer-top { padding:40px 0 20px; }
  .footer-col { width:50%; }
}

/* roulang page: category1 */
:root {
    --blue-primary: #2B7FD1;
    --blue-hover: #1E5F9E;
    --blue-light: #E8F1F8;
    --blue-pale: #F4F8FC;
    --peach: #FFB07A;
    --peach-light: #FFF1E8;
    --peach-deep: #FA6B3B;
    --text-main: #1A2A3A;
    --text-secondary: #5A6B7B;
    --border-light: #E5ECF2;
    --bg-white: #FFFFFF;
    --success: #21A67A;
    --warning: #E6A23C;
    --error: #D64545;
    --radius-card: 12px;
    --radius-btn: 8px;
    --radius-badge: 999px;
    --shadow-card: 0 2px 8px rgba(26,42,58,0.06);
    --shadow-hover: 0 8px 24px rgba(26,42,58,0.12);
    --shadow-highlight: 0 12px 32px rgba(26,42,58,0.14);
    --font-main: "PingFang SC", "Microsoft YaHei", "Segoe UI", "Helvetica Neue", sans-serif;
    --space-section: 80px;
    --space-section-mobile: 48px;
}
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font-main); font-size: 16px; line-height: 1.7; color: var(--text-main); background: var(--bg-white); overflow-x: hidden; }
* { box-sizing: border-box; }
img { max-width: 100%; display: block; }
a { color: var(--blue-primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--blue-hover); }
button, input, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; margin: 0; padding: 0; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.row { max-width: 100%; width: 100%; margin: 0 auto; }
.row .row { margin: 0; }
section { padding: var(--space-section) 0; }
.section-head { text-align: center; margin-bottom: 48px; }
.sec-tag { display: inline-block; background: var(--peach-light); color: var(--peach-deep); font-size: 13px; font-weight: 600; padding: 4px 14px; border-radius: var(--radius-badge); margin-bottom: 14px; }
.section-head h2 { font-size: 32px; margin-bottom: 12px; color: var(--text-main); }
.section-head p { color: var(--text-secondary); max-width: 640px; margin: 0 auto; font-size: 15px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: var(--radius-btn); padding: 13px 30px; font-weight: 600; font-size: 15px; line-height: 1.2; border: 1px solid transparent; cursor: pointer; transition: all .25s ease; text-align: center; }
.btn-primary { background: var(--blue-primary); color: #fff; }
.btn-primary:hover { background: var(--blue-hover); transform: translateY(-1px); box-shadow: var(--shadow-card); color: #fff; }
.btn-primary:active { transform: translateY(0); }
.btn-outline { background: #fff; border-color: var(--blue-primary); color: var(--blue-primary); }
.btn-outline:hover { background: var(--blue-light); border-color: var(--blue-hover); color: var(--blue-hover); transform: translateY(-1px); }
.btn-cta { background: var(--peach-deep); color: #fff; }
.btn-cta:hover { filter: brightness(0.95); transform: translateY(-1px); box-shadow: var(--shadow-card); color: #fff; }
.btn-cta:active { transform: translateY(0); }
.btn-sm { padding: 9px 22px; font-size: 14px; }
.btn-block { width: 100%; }
.btn:focus-visible, a:focus-visible, button:focus-visible { outline: 2px solid var(--blue-primary); outline-offset: 2px; }
.badge { display: inline-flex; align-items: center; padding: 3px 12px; border-radius: var(--radius-badge); font-size: 12px; font-weight: 600; line-height: 1.6; }
.badge-gray { background: #F1F4F8; color: #5A6B7B; }
.badge-blue { background: var(--blue-light); color: var(--blue-primary); }
.badge-peach { background: var(--peach-light); color: var(--peach-deep); }
.badge-green { background: #E7F7F0; color: var(--success); }
.badge-warning { background: #FDF3E0; color: var(--warning); }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255, 255, 255, 0.96); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border-light); box-shadow: 0 2px 12px rgba(26, 42, 58, 0.06); height: 72px; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 700; color: var(--text-main); flex-shrink: 0; }
.brand:hover { color: var(--text-main); }
.brand svg { width: 32px; height: 32px; flex-shrink: 0; }
.main-nav { display: flex; gap: 8px; margin: 0 auto; }
.main-nav a { font-size: 15px; font-weight: 500; color: var(--text-secondary); padding: 24px 16px; border-bottom: 2px solid transparent; white-space: nowrap; }
.main-nav a:hover { color: var(--blue-primary); }
.main-nav a.active { color: var(--blue-primary); border-bottom-color: var(--blue-primary); font-weight: 600; }
.header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.node-selector { position: relative; }
.node-btn { display: inline-flex; align-items: center; gap: 6px; background: var(--blue-light); border: 1px solid transparent; border-radius: var(--radius-btn); padding: 9px 16px; font-size: 14px; font-weight: 600; color: var(--blue-primary); cursor: pointer; transition: all .2s ease; }
.node-btn:hover { background: var(--blue-pale); border-color: var(--blue-primary); }
.node-btn.active { background: #fff; border-color: var(--blue-primary); color: var(--blue-primary); }
.node-btn svg { width: 16px; height: 16px; }
.node-panel { position: absolute; top: calc(100% + 10px); right: 0; width: 260px; background: #fff; border: 1px solid var(--border-light); border-radius: var(--radius-card); box-shadow: var(--shadow-hover); padding: 14px; opacity: 0; visibility: hidden; transform: translateY(-8px); transition: all .25s ease; z-index: 99; }
.node-panel.open { opacity: 1; visibility: visible; transform: translateY(0); }
.node-panel h4 { font-size: 14px; font-weight: 600; color: var(--text-secondary); margin: 0 0 8px; padding-bottom: 8px; border-bottom: 1px solid var(--border-light); }
.node-list li { display: flex; justify-content: space-between; align-items: center; padding: 9px 10px; border-radius: 8px; transition: background .2s; font-size: 14px; }
.node-list li:hover { background: var(--blue-pale); }
.hamburger { display: none; background: none; border: 1px solid var(--border-light); border-radius: 8px; padding: 10px 12px; cursor: pointer; }
.hamburger span { display: block; width: 20px; height: 2px; background: var(--text-main); margin: 4px 0; border-radius: 2px; transition: all .3s; }

/* ---------- Page Banner ---------- */
.page-banner { position: relative; padding: 56px 0 40px; background: var(--bg-white); overflow: hidden; }
.page-banner-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat; opacity: .10; pointer-events: none; }
.page-banner::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(255,255,255,.92) 0%, rgba(255,255,255,.75) 70%, rgba(255,255,255,.4) 100%); pointer-events: none; }
.page-banner .container { position: relative; z-index: 2; }
.breadcrumb { font-size: 13px; color: var(--text-secondary); margin-bottom: 20px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.breadcrumb a { color: var(--blue-primary); }
.breadcrumb a:hover { color: var(--blue-hover); }
.breadcrumb .sep { color: var(--border-light); }
.page-banner h1 { font-size: 36px; line-height: 1.3; margin: 0 0 14px; letter-spacing: .5px; color: var(--text-main); }
.page-desc { font-size: 15px; color: var(--text-secondary); max-width: 720px; line-height: 1.8; margin: 0 0 20px; }
.info-bar { background: var(--blue-pale); border-radius: 8px; padding: 12px 18px; font-size: 13px; color: var(--text-secondary); display: inline-block; border: 1px solid var(--border-light); }

/* ---------- Category Content ---------- */
.category-main { padding-top: 20px; }
.scene-list .columns { margin-bottom: 16px; }
.scene-card { display: flex; gap: 20px; background: #fff; border: 1px solid var(--border-light); border-radius: var(--radius-card); padding: 18px; box-shadow: var(--shadow-card); transition: all .25s ease; height: 100%; }
.scene-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: #C9D8E6; }
.scene-thumb { width: 100px; height: 80px; flex-shrink: 0; border-radius: 8px; overflow: hidden; background: #F7FAFC; border: 1px solid var(--border-light); }
.scene-thumb img { width: 100%; height: 100%; object-fit: cover; }
.scene-body { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.scene-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; font-size: 13px; color: var(--text-secondary); flex-wrap: wrap; }
.scene-body h3 { font-size: 18px; font-weight: 600; margin: 0 0 6px; color: var(--text-main); line-height: 1.4; }
.scene-body p { font-size: 14px; color: var(--text-secondary); margin: 0 0 10px; line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.scene-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: auto; }

/* Sidebar */
.sidebar .side-card { background: #fff; border: 1px solid var(--border-light); border-radius: var(--radius-card); padding: 24px; margin-bottom: 20px; box-shadow: var(--shadow-card); }
.sidebar .side-card h3 { font-size: 17px; font-weight: 600; margin: 0 0 14px; padding-bottom: 10px; border-bottom: 2px solid var(--blue-light); color: var(--text-main); }
.hot-list li { margin-bottom: 4px; }
.hot-list a { display: block; padding: 9px 0; font-size: 14px; color: var(--text-secondary); border-bottom: 1px solid var(--blue-pale); transition: all .2s ease; }
.hot-list a:hover { color: var(--blue-primary); padding-left: 4px; border-bottom-color: var(--blue-light); }
.cert-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.cert-badges .badge { padding: 6px 14px; font-size: 13px; }
.side-download p { font-size: 14px; color: var(--text-secondary); margin: 0 0 12px; }
.side-download .badge { margin-bottom: 10px; }
.side-download .btn { margin-top: 4px; }

/* Pagination */
.pagination-wrap { text-align: center; margin-top: 32px; }
.pagination { display: inline-flex; align-items: center; gap: 6px; }
.pagination li { display: inline-flex; }
.pagination a, .pagination .current, .pagination .pagination-previous.disabled, .pagination .pagination-next.disabled { display: inline-flex; align-items: center; justify-content: center; min-width: 38px; height: 38px; padding: 0 12px; border-radius: 8px; font-size: 14px; font-weight: 600; border: 1px solid var(--border-light); background: #fff; color: var(--text-main); transition: all .2s ease; }
.pagination a:hover { background: var(--blue-pale); border-color: var(--blue-primary); color: var(--blue-primary); }
.pagination .current { background: var(--blue-primary); border-color: var(--blue-primary); color: #fff; }
.pagination .pagination-previous.disabled, .pagination .pagination-next.disabled { color: #B0BECB; background: #F7FAFC; cursor: not-allowed; }
.pagination .pagination-next a, .pagination .pagination-previous a { border-color: var(--border-light); background: #fff; }

/* ---------- Stats ---------- */
.stats-section { background: var(--blue-pale); border-top: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
.stats-quote { display: flex; gap: 16px; max-width: 760px; margin: 0 auto 36px; padding: 0 16px; }
.stats-quote::before { content: ''; width: 4px; flex-shrink: 0; background: var(--peach); border-radius: 2px; }
.stats-quote p { font-size: 14px; font-style: italic; color: var(--text-secondary); margin: 0; line-height: 1.7; }
.stat-block { text-align: center; padding: 20px 12px; }
.stat-number { font-size: 48px; font-weight: 700; color: var(--blue-primary); line-height: 1.2; margin-bottom: 4px; }
.stat-label { font-size: 13px; color: var(--text-secondary); margin-bottom: 14px; }
.stat-bar { height: 4px; background: var(--blue-light); border-radius: 999px; overflow: hidden; max-width: 180px; margin: 0 auto; }
.stat-bar span { display: block; height: 100%; background: var(--peach); border-radius: 999px; }

/* ---------- Steps ---------- */
.steps-section { background: #fff; }
.step-item { text-align: center; padding: 24px 20px; }
.step-num { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 50%; background: var(--blue-light); color: var(--blue-primary); font-size: 18px; font-weight: 700; margin-bottom: 18px; }
.step-item h3 { font-size: 18px; font-weight: 600; margin: 0 0 8px; }
.step-item p { font-size: 14px; color: var(--text-secondary); max-width: 260px; margin: 0 auto; }

/* ---------- FAQ ---------- */
.faq-section { background: var(--blue-pale); }
.faq-wrap { max-width: 800px; margin: 0 auto; }
.accordion { border: 1px solid var(--border-light); border-radius: var(--radius-card); background: #fff; overflow: hidden; box-shadow: var(--shadow-card); margin: 0; }
.accordion-item { border-bottom: 1px solid var(--border-light); }
.accordion-item:last-child { border-bottom: none; }
.accordion-title { position: relative; display: block; padding: 18px 52px 18px 22px; font-size: 16px; font-weight: 600; color: var(--text-main); background: #fff; transition: all .3s ease; }
.accordion-title:hover { background: var(--blue-pale); color: var(--blue-primary); }
.accordion-title::before { content: ''; position: absolute; right: 22px; top: 50%; width: 8px; height: 8px; border-right: 2px solid var(--text-secondary); border-bottom: 2px solid var(--text-secondary); transform: translateY(-70%) rotate(45deg); transition: transform .3s ease; }
.accordion-item.is-active > .accordion-title::before { transform: translateY(-30%) rotate(-135deg); }
.accordion-content { padding: 0 22px 20px; color: var(--text-secondary); font-size: 15px; line-height: 1.7; background: #fff; }
.accordion-content p { margin: 0 0 8px; }
.accordion-content ul { padding-left: 18px; list-style: disc; }
.accordion-content ul li { list-style: disc; margin-bottom: 6px; }

/* ---------- CTA ---------- */
.cta-section { background: #fff; }
.cta-box { position: relative; background: var(--blue-pale); border: 1px solid var(--border-light); border-radius: 20px; padding: 56px 40px; text-align: center; overflow: hidden; }
.cta-box::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.jpg') center/cover no-repeat; opacity: .08; pointer-events: none; }
.cta-box > * { position: relative; z-index: 1; }
.cta-box h2 { font-size: 30px; margin: 0 0 12px; }
.cta-box p { font-size: 15px; color: var(--text-secondary); max-width: 480px; margin: 0 auto 28px; }
.cta-box .btn { min-width: 160px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--text-main); color: #A7B3BF; padding: 56px 0 0; }
.footer-top { padding-bottom: 40px; }
.footer-col { margin-bottom: 32px; }
.footer-brand .brand { color: #fff; margin-bottom: 10px; }
.footer-brand .brand span { color: #fff; }
.footer-brand p { font-size: 14px; color: #8FA0AF; margin: 12px 0 0; line-height: 1.7; max-width: 260px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 600; margin: 0 0 16px; }
.footer-col a { display: block; padding: 6px 0; font-size: 14px; color: #8FA0AF; transition: color .2s ease; }
.footer-col a:hover { color: var(--peach); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); text-align: center; padding: 20px 0; font-size: 13px; color: rgba(255,255,255,.45); }
.footer-bottom p { margin: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 1023px) and (min-width: 768px) {
    .scene-card { gap: 16px; padding: 16px; }
    .scene-thumb { width: 90px; height: 72px; }
    .page-banner h1 { font-size: 32px; }
}
@media (max-width: 767px) {
    section { padding: var(--space-section-mobile) 0; }
    .site-header { height: 64px; }
    .header-inner { height: 64px; }
    .main-nav { position: absolute; top: 64px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 8px 24px 16px; box-shadow: var(--shadow-hover); border-bottom: 1px solid var(--border-light); display: none; gap: 0; }
    .main-nav.open { display: flex; }
    .main-nav a { padding: 14px 0; border-bottom: 1px solid var(--blue-pale); border-left: 2px solid transparent; font-size: 15px; }
    .main-nav a.active { border-bottom-color: var(--blue-pale); border-left-color: var(--blue-primary); background: transparent; }
    .hamburger { display: block; }
    .node-btn span { display: none; }
    .node-btn { padding: 10px; border-radius: 50%; }
    .node-panel { width: 220px; right: -40px; }
    .page-banner { padding: 36px 0 28px; }
    .page-banner h1 { font-size: 30px; }
    .scene-card { flex-direction: column; gap: 12px; }
    .scene-thumb { width: 100%; height: 140px; }
    .scene-meta { font-size: 12px; }
    .stat-number { font-size: 38px; }
    .stat-block { margin-bottom: 20px; }
    .step-item { margin-bottom: 24px; }
    .cta-box { padding: 36px 20px; }
    .cta-box h2 { font-size: 26px; }
    .content-card { margin-bottom: 16px; }
    .stats-quote { margin-bottom: 24px; }
    .accordion-title { padding: 16px 46px 16px 16px; font-size: 15px; min-height: 48px; }
    .accordion-content { padding: 0 16px 16px; font-size: 14px; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .btn { width: 100%; }
    .hero-actions .btn { width: auto; flex: 1; }
    .badge { font-size: 11px; }
}