/* roulang page: index */
:root {
  --primary: #FF6A00;
  --secondary: #F5C542;
  --tertiary: #3DDC97;
  --bg-base: #0E1116;
  --bg-panel: #171B22;
  --border: #262B33;
  --text-primary: #E8E6E3;
  --text-secondary: #9BA1A6;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --shadow-card: 0 1px 2px rgba(0,0,0,.4);
  --shadow-hover: 0 8px 24px rgba(0,0,0,.5);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: "Noto Sans SC", "PingFang SC", system-ui, sans-serif; background: var(--bg-base); color: var(--text-primary); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s; }
button { font-family: inherit; cursor: pointer; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 1rem; width: 100%; }
.mono, .font-mono { font-family: "JetBrains Mono", "SF Mono", ui-monospace, monospace; }

/* ---------- 导航 ---------- */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(14,17,22,.86); backdrop-filter: blur(14px); border-bottom: 1px solid var(--border); transition: background .3s, border-color .3s; }
.site-header.scrolled { background: rgba(10,12,15,.94); border-bottom-color: rgba(255,106,0,.25); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { font-size: 1.35rem; font-weight: 800; color: var(--text-primary); letter-spacing: .01em; display: inline-flex; align-items: center; }
.logo span { color: var(--primary); }
.logo-badge { display: inline-block; font-family: "JetBrains Mono", monospace; font-size: .58rem; color: var(--secondary); border: 1px solid rgba(245,197,66,.35); border-radius: 999px; padding: 1px 8px; margin-left: 8px; letter-spacing: .05em; background: rgba(245,197,66,.06); }
.nav-links { display: flex; align-items: center; gap: 1.6rem; list-style: none; }
.nav-links a { font-size: .95rem; color: var(--text-secondary); padding: 4px 2px; border-bottom: 2px solid transparent; transition: color .2s, border-color .2s; }
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); border-bottom-color: var(--primary); }
.nav-cta { display: inline-block; background: var(--primary); color: #0E1116 !important; font-weight: 700; font-size: .95rem; padding: 10px 24px; border-radius: var(--radius-btn); border: none !important; transition: all .2s; }
.nav-cta:hover { filter: brightness(1.12); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(255,106,0,.25); color: #0E1116 !important; }
.nav-cta:active { transform: scale(.96); }
.nav-cta:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.nav-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.6rem; line-height: 1; width: 42px; height: 42px; border-radius: 8px; transition: background .2s; }
.nav-toggle:hover { background: rgba(255,255,255,.06); }

/* ---------- Hero ---------- */
.hero { position: relative; background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat; padding: 88px 0 100px; }
.hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(14,17,22,.94) 42%, rgba(14,17,22,.68) 100%); }
.hero::after { content: ''; position: absolute; inset: 0; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='44' height='44' viewBox='0 0 44 44'%3E%3Cpath d='M44 0H0v44' fill='none' stroke='rgba(255,255,255,.045)' stroke-width='1'/%3E%3C/svg%3E"); pointer-events: none; }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.08fr .92fr; gap: 52px; align-items: center; z-index: 2; }
.hero-label { display: inline-block; font-family: "JetBrains Mono", monospace; font-size: .75rem; color: var(--secondary); border: 1px solid rgba(245,197,66,.3); border-radius: var(--radius-badge); padding: 4px 14px; margin-bottom: 22px; background: rgba(245,197,66,.07); letter-spacing: .04em; }
.hero h1 { font-size: 2.55rem; line-height: 1.28; font-weight: 800; margin-bottom: 20px; letter-spacing: .01em; }
.hero h1 .highlight { color: var(--primary); }
.hero-desc { font-size: 1.05rem; color: var(--text-secondary); margin-bottom: 32px; max-width: 540px; line-height: 1.85; }
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 44px; }
.btn-primary { display: inline-block; background: var(--primary); color: #0E1116; font-weight: 700; font-size: 1rem; padding: 13px 32px; border-radius: var(--radius-btn); transition: all .2s; border: none; }
.btn-primary:hover { filter: brightness(1.12); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(255,106,0,.3); }
.btn-primary:active { transform: scale(.96); }
.btn-primary:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.btn-secondary { display: inline-block; background: transparent; color: var(--text-primary); font-weight: 600; font-size: 1rem; padding: 12px 30px; border-radius: var(--radius-btn); border: 1px solid var(--border); transition: all .2s; }
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); }
.hero-stats { display: flex; gap: 36px; flex-wrap: wrap; }
.hero-stats .stat-num { font-family: "JetBrains Mono", monospace; font-size: 1.35rem; font-weight: 700; color: var(--tertiary); line-height: 1.2; }
.hero-stats .stat-label { font-size: .76rem; color: var(--text-secondary); letter-spacing: .04em; }

/* 对比卡片 */
.compare-card { background: rgba(23,27,34,.92); border: 1px solid var(--border); border-radius: 18px; padding: 30px; backdrop-filter: blur(10px); position: relative; box-shadow: 0 4px 24px rgba(0,0,0,.4); }
.compare-card.recommended { border-color: rgba(255,106,0,.55); box-shadow: 0 0 0 1px rgba(255,106,0,.3), 0 16px 40px rgba(0,0,0,.55); }
.badge-rec { position: absolute; top: -12px; right: 24px; background: var(--primary); color: #0E1116; font-size: .68rem; font-weight: 800; padding: 4px 16px; border-radius: 999px; letter-spacing: .08em; text-transform: uppercase; box-shadow: 0 4px 12px rgba(255,106,0,.35); }
.compare-title { font-size: 1.25rem; font-weight: 800; margin-bottom: 4px; display: flex; align-items: center; gap: 10px; }
.compare-title .vs { font-size: .75rem; color: var(--text-secondary); font-weight: 400; }
.compare-sub { font-size: .82rem; color: var(--text-secondary); margin-bottom: 20px; }
.compare-head { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 8px; padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,.08); font-size: .76rem; font-weight: 700; color: var(--text-secondary); letter-spacing: .04em; }
.compare-row { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 8px; align-items: center; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.05); }
.compare-row:last-child { border-bottom: none; }
.compare-name { font-size: .85rem; color: var(--text-secondary); }
.compare-val { font-weight: 600; font-size: .86rem; text-align: center; }
.compare-val.dim { color: var(--text-secondary); font-weight: 400; }
.compare-val.good { color: var(--tertiary); }
.compare-cta { display: block; margin-top: 20px; text-align: center; }

/* ---------- 服务区 ---------- */
.section { padding: 76px 0; }
.section-label { display: inline-block; font-family: "JetBrains Mono", monospace; font-size: .72rem; color: var(--primary); letter-spacing: .1em; text-transform: uppercase; margin-bottom: 10px; font-weight: 600; }
.section h2 { font-size: 2rem; font-weight: 800; line-height: 1.3; margin-bottom: 12px; }
.section-desc { color: var(--text-secondary); font-size: 1rem; max-width: 660px; margin-bottom: 44px; line-height: 1.8; }
.services { background: #0B0E13; border-top: 1px solid rgba(255,255,255,.03); border-bottom: 1px solid rgba(255,255,255,.03); }
.services-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.services-grid .card { background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 32px; transition: all .3s; }
.services-grid .card-lg { grid-row: span 2; display: flex; flex-direction: column; background: linear-gradient(145deg, rgba(255,106,0,.05), rgba(23,27,34,1) 60%); }
.services-grid .card:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: var(--shadow-hover); }
.services-grid .card-icon { font-size: 2rem; margin-bottom: 18px; line-height: 1; }
.services-grid h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; }
.services-grid .card-lg p { font-size: .96rem; color: var(--text-secondary); line-height: 1.8; flex: 1; }
.services-grid .card-sm p { font-size: .88rem; color: var(--text-secondary); line-height: 1.7; }
.card-link { display: inline-block; margin-top: 18px; font-size: .88rem; color: var(--primary); font-weight: 600; transition: all .2s; }
.card-link:hover { text-decoration: underline; transform: translateX(3px); }

/* ---------- 数据区 ---------- */
.stats-section { background: #0A0C0F; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 36px; text-align: center; }
.stat-icon { font-size: 1.3rem; color: var(--tertiary); margin-bottom: 10px; }
.stat-number { font-family: "JetBrains Mono", monospace; font-size: 1.7rem; font-weight: 700; color: var(--tertiary); line-height: 1.25; }
.stat-desc { font-size: .86rem; color: var(--text-secondary); margin-top: 6px; }

/* ---------- 案例区 ---------- */
.cases { background: var(--bg-base); }
.cases-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.case-card { background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius-card); overflow: hidden; transition: all .3s; }
.case-card:hover { transform: translateY(-5px); border-color: var(--primary); box-shadow: var(--shadow-hover); }
.case-cover { position: relative; aspect-ratio: 16/10; overflow: hidden; }
.case-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-card:hover .case-cover img { transform: scale(1.05); }
.case-cover::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(14,17,22,.35), transparent 55%); }
.case-body { padding: 28px; }
.case-badge { display: inline-block; background: rgba(245,197,66,.12); color: var(--secondary); font-size: .72rem; font-weight: 600; border-radius: 999px; padding: 4px 14px; margin-bottom: 14px; }
.case-body h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 10px; line-height: 1.4; }
.case-body p { font-size: .92rem; color: var(--text-secondary); line-height: 1.75; }
.case-footer { display: flex; align-items: center; justify-content: space-between; margin-top: 18px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.06); }
.case-footer .mono { font-size: .78rem; color: var(--text-secondary); }
.case-footer a { color: var(--primary); font-weight: 600; font-size: .9rem; transition: all .2s; }
.case-footer a:hover { text-decoration: underline; transform: translateX(2px); }

/* ---------- 方案区 ---------- */
.process { background: #F4F2EE; color: #1A1D21; }
.process .section-label { color: var(--primary); }
.process .section-desc { color: #5A6068; }
.process h2 { color: #1A1D21; }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 20px; }
.process-step { position: relative; padding: 28px 24px; background: #FFFFFF; border-radius: var(--radius-card); border: 1px solid #E2E0DC; transition: all .3s; }
.process-step:hover { box-shadow: 0 10px 28px rgba(0,0,0,.08); transform: translateY(-3px); }
.process-num { font-family: "JetBrains Mono", monospace; font-size: 1.65rem; font-weight: 800; color: var(--primary); margin-bottom: 10px; line-height: 1; }
.process-step h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; color: #1A1D21; }
.process-step p { font-size: .88rem; color: #5A6068; line-height: 1.65; }
.process-arrow { position: absolute; right: -19px; top: 42%; z-index: 3; font-size: 1.3rem; color: #C8C6C1; pointer-events: none; }
.process-step:last-child .process-arrow { display: none; }

/* ---------- 资讯区 ---------- */
.news { background: #0D1116; }
.news-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 48px; }
.news-main .section-desc { margin-bottom: 28px; }
.news-list { list-style: none; }
.news-list li { display: flex; justify-content: space-between; align-items: center; padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.05); gap: 16px; }
.news-list li:first-child { border-top: 1px solid rgba(255,255,255,.05); }
.news-list a { font-size: .98rem; color: var(--text-primary); transition: color .2s; line-height: 1.5; }
.news-list a:hover { color: var(--primary); }
.news-meta { font-size: .75rem; color: var(--text-secondary); flex-shrink: 0; }
.news-side { background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 28px; }
.news-side h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 18px; padding-bottom: 12px; border-bottom: 1px solid rgba(255,255,255,.06); }
.top-list { list-style: none; }
.top-list li { display: flex; align-items: center; gap: 14px; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.04); font-size: .92rem; color: var(--text-primary); transition: color .2s; cursor: default; }
.top-list li:hover { color: var(--primary); }
.top-num { font-family: "JetBrains Mono", monospace; font-size: .9rem; font-weight: 700; color: var(--text-secondary); min-width: 28px; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { font-size: .8rem; color: var(--text-secondary); border: 1px solid var(--border); border-radius: 999px; padding: 5px 14px; transition: all .2s; }
.tag:hover { color: var(--primary); border-color: var(--primary); }

/* ---------- FAQ ---------- */
.faq { background: var(--bg-base); }
.faq-list { max-width: 860px; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-q { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 22px 6px; font-size: 1rem; font-weight: 600; cursor: pointer; transition: color .2s; background: none; border: none; color: var(--text-primary); width: 100%; text-align: left; }
.faq-q:hover { color: var(--primary); }
.faq-q .icon { font-size: 1.1rem; transition: transform .35s; color: var(--primary); flex-shrink: 0; }
.faq-item.open .faq-q .icon { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .45s ease; padding: 0 6px; }
.faq-item.open .faq-a { max-height: 400px; padding-bottom: 22px; }
.faq-a p { font-size: .93rem; color: var(--text-secondary); line-height: 1.85; }
.faq-more { margin-top: 28px; text-align: center; }
.faq-more a { color: var(--primary); font-size: .95rem; font-weight: 600; }
.faq-more a:hover { text-decoration: underline; }

/* ---------- CTA ---------- */
.cta-section { position: relative; background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat; padding: 88px 0; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: rgba(10,12,15,.86); }
.cta-inner { position: relative; z-index: 1; text-align: center; max-width: 680px; margin: 0 auto; }
.cta-inner h2 { font-size: 2.1rem; font-weight: 800; margin-bottom: 16px; }
.cta-inner p { color: var(--text-secondary); font-size: 1.05rem; margin-bottom: 32px; line-height: 1.8; }
.cta-note { font-family: "JetBrains Mono", monospace; font-size: .78rem; color: var(--text-secondary); margin-top: 18px; letter-spacing: .04em; }

/* ---------- 订阅 ---------- */
.subscribe { background: #0B0E13; border-top: 1px solid rgba(255,255,255,.03); padding: 56px 0; }
.subscribe-wrap { max-width: 760px; margin: 0 auto; text-align: center; }
.subscribe-text h2 { font-size: 1.5rem; font-weight: 800; margin-bottom: 6px; }
.subscribe-text p { color: var(--text-secondary); font-size: .92rem; margin-bottom: 24px; }
.subscribe-form { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.subscribe-form input { flex: 1; min-width: 220px; background: var(--bg-panel); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; color: var(--text-primary); font-size: .95rem; transition: border-color .2s, box-shadow .2s; }
.subscribe-form input::placeholder { color: var(--text-secondary); }
.subscribe-form input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(255,106,0,.14); }
.subscribe-note { font-size: .78rem; color: var(--text-secondary); margin-top: 14px; }

/* ---------- 页脚 ---------- */
.site-footer { background: #090B0E; border-top: 1px solid rgba(255,255,255,.06); padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-brand .logo { font-size: 1.2rem; }
.footer-brand p { font-size: .85rem; color: var(--text-secondary); margin-top: 14px; line-height: 1.75; max-width: 280px; }
.footer-col h4 { font-size: .88rem; font-weight: 700; color: var(--text-primary); margin-bottom: 16px; letter-spacing: .05em; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: .88rem; color: var(--text-secondary); transition: color .2s; }
.footer-col a:hover { color: var(--primary); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.06); padding: 20px 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; font-size: .8rem; color: var(--text-secondary); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .process-arrow { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 2rem; }
  .services-grid { grid-template-columns: 1fr; }
  .services-grid .card-lg { grid-row: auto; }
  .cases-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; gap: 28px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}
@media (max-width: 768px) {
  .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; background: rgba(14,17,22,.98); border-bottom: 1px solid var(--border); padding: 20px; flex-direction: column; gap: 14px; align-items: flex-start; }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1rem; padding: 8px 0; }
  .nav-cta.desktop { display: none; }
  .nav-toggle { display: block; }
  .section { padding: 52px 0; }
  .section h2 { font-size: 1.6rem; }
  .hero { padding: 64px 0 72px; }
  .hero h1 { font-size: 1.7rem; }
  .btn-primary, .btn-secondary { width: 100%; text-align: center; }
  .cta-inner h2 { font-size: 1.6rem; }
  .subscribe-form { flex-direction: column; }
  .subscribe-form input { min-width: 0; width: 100%; }
  .case-body { padding: 22px; }
  .compare-card { padding: 24px; }
}
@media (max-width: 520px) {
  .stats-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-stats { gap: 20px; }
  .hero-stats .stat-num { font-size: 1.1rem; }
  .news-list li { flex-direction: column; align-items: flex-start; gap: 4px; }
  .compare-head, .compare-row { grid-template-columns: 1.1fr 1fr 1fr; }
}

/* roulang page: category1 */
:root {
  --primary: #FF6A00;
  --secondary: #F5C542;
  --tertiary: #3DDC97;
  --bg-base: #0E1116;
  --bg-panel: #171B22;
  --border: #262B33;
  --text-primary: #E8E6E3;
  --text-secondary: #9BA1A6;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --shadow-card: 0 1px 2px rgba(0,0,0,.4);
  --shadow-hover: 0 8px 24px rgba(0,0,0,.5);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: "Noto Sans SC", "PingFang SC", system-ui, sans-serif; background: var(--bg-base); color: var(--text-primary); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s; }
button { font-family: inherit; cursor: pointer; background: none; border: none; color: inherit; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 1rem; width: 100%; }
.mono { font-family: "JetBrains Mono", "SF Mono", ui-monospace, monospace; }

/* ---------- 导航 ---------- */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(14,17,22,.86); backdrop-filter: blur(14px); border-bottom: 1px solid var(--border); transition: background .3s, border-color .3s; }
.site-header.scrolled { background: rgba(10,12,15,.94); border-bottom-color: rgba(255,106,0,.25); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; position: relative; }
.logo { font-size: 1.35rem; font-weight: 800; color: var(--text-primary); letter-spacing: .01em; display: inline-flex; align-items: center; }
.logo span { color: var(--primary); }
.logo-badge { display: inline-block; font-family: "JetBrains Mono", ui-monospace, monospace; font-size: .58rem; color: var(--secondary); border: 1px solid rgba(245,197,66,.35); border-radius: 999px; padding: 1px 8px; margin-left: 8px; letter-spacing: .05em; background: rgba(245,197,66,.06); }
.nav-links { display: flex; align-items: center; gap: 1.6rem; list-style: none; }
.nav-links a { font-size: .95rem; color: var(--text-secondary); padding: 4px 2px; border-bottom: 2px solid transparent; transition: color .2s, border-color .2s; }
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); border-bottom-color: var(--primary); }
.nav-cta { display: inline-block; background: var(--primary); color: #0E1116 !important; font-weight: 700; font-size: .95rem; padding: 10px 24px; border-radius: var(--radius-btn); border: none !important; transition: all .2s; white-space: nowrap; }
.nav-cta:hover { filter: brightness(1.12); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(255,106,0,.25); color: #0E1116 !important; }
.nav-cta:active { transform: scale(.96); }
.nav-cta:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.nav-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.6rem; line-height: 1; width: 42px; height: 42px; border-radius: 8px; transition: background .2s; }
.nav-toggle:hover { background: rgba(255,255,255,.06); }

/* ---------- 按钮 ---------- */
.btn-primary { display: inline-block; background: var(--primary); color: #0E1116; font-weight: 700; font-size: 1rem; padding: 13px 32px; border-radius: var(--radius-btn); transition: all .2s; border: none; }
.btn-primary:hover { filter: brightness(1.12); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(255,106,0,.3); }
.btn-primary:active { transform: scale(.96); }
.btn-primary:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.btn-secondary { display: inline-block; background: transparent; color: var(--text-primary); font-weight: 600; font-size: 1rem; padding: 12px 30px; border-radius: var(--radius-btn); border: 1px solid var(--border); transition: all .2s; }
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); }
.btn-secondary:active { transform: scale(.96); }
.btn-secondary:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }

/* ---------- 通用板块 ---------- */
.section { padding: 76px 0; }
.section-label { display: inline-block; font-family: "JetBrains Mono", ui-monospace, monospace; font-size: .72rem; color: var(--secondary); letter-spacing: .12em; text-transform: uppercase; border: 1px solid rgba(245,197,66,.25); border-radius: 999px; padding: 4px 14px; background: rgba(245,197,66,.06); margin-bottom: 18px; }
.section-head { margin-bottom: 44px; }
.section-head h2 { font-size: 1.9rem; font-weight: 800; letter-spacing: .01em; margin-bottom: 10px; line-height: 1.35; }
.section-head p { color: var(--text-secondary); max-width: 560px; }

/* ---------- 面包屑 ---------- */
.breadcrumb { padding-top: 18px; font-size: .85rem; color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { margin: 0 8px; color: var(--border); }

/* ---------- 分类 Hero ---------- */
.category-hero { position: relative; background: linear-gradient(135deg, rgba(14,17,22,.96) 32%, rgba(14,17,22,.8) 75%), url('/assets/images/backpic/back-2.jpg') center/cover no-repeat; padding: 58px 0 70px; border-bottom: 1px solid var(--border); }
.category-hero::after { content: ''; position: absolute; inset: 0; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='44' height='44' viewBox='0 0 44 44'%3E%3Cpath d='M44 0H0v44' fill='none' stroke='rgba(255,255,255,.045)' stroke-width='1'/%3E%3C/svg%3E"); pointer-events: none; }
.category-hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 52px; align-items: center; position: relative; z-index: 2; }
.category-hero h1 { font-size: 2.2rem; line-height: 1.3; font-weight: 800; margin-bottom: 18px; letter-spacing: .01em; }
.category-hero h1 .highlight { color: var(--primary); }
.category-hero-desc { color: var(--text-secondary); font-size: 1.02rem; margin-bottom: 28px; max-width: 540px; line-height: 1.85; }
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-meta { display: flex; gap: 24px; flex-wrap: wrap; margin-top: 32px; color: var(--text-secondary); font-size: .82rem; }
.hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
.hero-meta em { font-style: normal; color: var(--tertiary); font-family: "JetBrains Mono", ui-monospace, monospace; }
.hero-visual { position: relative; }
.hero-visual .cover-frame { border-radius: 16px; overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow-hover); background: var(--bg-panel); }
.hero-visual .cover-frame img { width: 100%; height: 300px; object-fit: cover; }
.hero-visual .cover-badge { position: absolute; top: 16px; left: 16px; background: rgba(14,17,22,.85); border: 1px solid rgba(245,197,66,.35); color: var(--secondary); font-family: "JetBrains Mono", ui-monospace, monospace; font-size: .72rem; padding: 4px 12px; border-radius: 999px; backdrop-filter: blur(6px); letter-spacing: .04em; }
.hero-visual .cover-caption { position: absolute; bottom: 16px; left: 16px; right: 16px; background: rgba(14,17,22,.78); border-radius: 10px; padding: 10px 14px; font-size: .8rem; color: var(--text-primary); border: 1px solid rgba(255,255,255,.07); backdrop-filter: blur(6px); }

/* ---------- 筛选条 ---------- */
.filter-bar { background: var(--bg-panel); border-bottom: 1px solid var(--border); padding: 18px 0; }
.filter-chips { display: flex; gap: 10px; flex-wrap: wrap; }
.chip { padding: 8px 20px; border-radius: 999px; border: 1px solid var(--border); color: var(--text-secondary); font-size: .88rem; transition: all .2s; background: transparent; }
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip.active { background: var(--primary); border-color: var(--primary); color: #0E1116; font-weight: 700; }
.chip:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

/* ---------- 内容类型 1大+2小 ---------- */
.type-grid { display: grid; grid-template-columns: 1.2fr .9fr .9fr; gap: 20px; }
.type-card { background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 28px; transition: all .25s; display: flex; flex-direction: column; }
.type-card:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: var(--shadow-hover); }
.type-card .icon { width: 44px; height: 44px; border-radius: 10px; background: rgba(255,106,0,.12); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; color: var(--primary); flex-shrink: 0; }
.type-card .icon svg { width: 22px; height: 22px; }
.type-card .tag { display: inline-block; font-family: "JetBrains Mono", ui-monospace, monospace; font-size: .68rem; color: var(--secondary); border: 1px solid rgba(245,197,66,.25); border-radius: 999px; padding: 2px 10px; margin-bottom: 14px; background: rgba(245,197,66,.05); letter-spacing: .06em; align-self: flex-start; }
.type-card h3 { font-size: 1.12rem; font-weight: 700; margin-bottom: 8px; }
.type-card p { color: var(--text-secondary); font-size: .9rem; line-height: 1.7; flex: 1; }
.type-card .more { margin-top: 16px; font-size: .85rem; color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 4px; transition: gap .2s; }
.type-card .more:hover { gap: 8px; }

/* ---------- 数据区 ---------- */
.data-section { background: #0A0C0F; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 56px 0; position: relative; }
.data-section::before { content: ''; position: absolute; inset: 0; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='44' height='44' viewBox='0 0 44 44'%3E%3Cpath d='M44 0H0v44' fill='none' stroke='rgba(255,255,255,.04)' stroke-width='1'/%3E%3C/svg%3E"); pointer-events: none; }
.data-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; z-index: 2; }
.data-item { text-align: center; padding: 12px 0; }
.data-item .data-num { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 1.75rem; font-weight: 800; color: var(--tertiary); display: block; line-height: 1.3; }
.data-item .data-label { font-size: .78rem; color: var(--text-secondary); letter-spacing: .06em; margin-top: 6px; display: block; }

/* ---------- 适用场景 ---------- */
.scenarios { background: #12151A; border-bottom: 1px solid var(--border); }
.scenario-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 48px; align-items: start; }
.scenario-side h2 { font-size: 1.9rem; font-weight: 800; line-height: 1.35; margin-bottom: 12px; }
.scenario-side p { color: var(--text-secondary); margin-bottom: 24px; font-size: .94rem; line-height: 1.8; }
.scenario-list { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.scenario-item { background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 24px; display: flex; gap: 16px; transition: all .2s; }
.scenario-item:hover { border-color: var(--primary); background: rgba(255,106,0,.04); transform: translateY(-2px); }
.scenario-idx { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 1rem; color: var(--primary); font-weight: 700; flex-shrink: 0; line-height: 1.6; }
.scenario-item h3 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.scenario-item p { font-size: .88rem; color: var(--text-secondary); line-height: 1.65; }

/* ---------- 流程 ---------- */
.process-section { background: var(--bg-panel); border-bottom: 1px solid var(--border); }
.process-section .section-head h2 { color: var(--text-primary); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step { position: relative; padding: 26px 22px; background: var(--bg-base); border: 1px solid var(--border); border-radius: var(--radius-card); transition: all .25s; }
.step:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: var(--shadow-hover); }
.step .step-num { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 1.4rem; font-weight: 800; color: var(--primary); line-height: 1; display: block; margin-bottom: 14px; }
.step h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.step p { font-size: .85rem; color: var(--text-secondary); line-height: 1.65; }
.step + .step::before { content: '→'; position: absolute; left: -22px; top: 50%; transform: translateY(-50%); color: var(--border); font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 1.1rem; z-index: 3; pointer-events: none; }

/* ---------- FAQ ---------- */
.faq-wrap { max-width: 800px; margin: 0 auto; }
.faq-wrap .section-head { text-align: center; }
.faq-wrap .section-head p { margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-question { width: 100%; text-align: left; padding: 20px 0; display: flex; justify-content: space-between; align-items: center; font-size: 1rem; font-weight: 600; color: var(--text-primary); transition: color .2s; }
.faq-question:hover { color: var(--primary); }
.faq-question:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
.faq-icon { width: 28px; height: 28px; border-radius: 8px; border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 1.1rem; color: var(--primary); transition: all .3s; flex-shrink: 0; margin-left: 16px; }
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: #0E1116; border-color: var(--primary); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-answer-inner { padding: 0 40px 22px 0; color: var(--text-secondary); font-size: .92rem; line-height: 1.8; max-width: 720px; }
.faq-item.open .faq-answer { max-height: 500px; }
.faq-more { text-align: center; margin-top: 28px; color: var(--text-secondary); font-size: .92rem; }
.faq-more a { color: var(--primary); font-weight: 600; }
.faq-more a:hover { text-decoration: underline; }

/* ---------- CTA ---------- */
.cta-section { position: relative; background: url('/assets/images/backpic/back-4.jpg') center/cover no-repeat; padding: 72px 0; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(14,17,22,.94) 40%, rgba(14,17,22,.78) 100%); }
.cta-section::after { content: ''; position: absolute; inset: 0; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='44' height='44' viewBox='0 0 44 44'%3E%3Cpath d='M44 0H0v44' fill='none' stroke='rgba(255,255,255,.04)' stroke-width='1'/%3E%3C/svg%3E"); pointer-events: none; }
.cta-inner { position: relative; z-index: 2; text-align: center; max-width: 680px; margin: 0 auto; }
.cta-section h2 { font-size: 1.9rem; font-weight: 800; margin-bottom: 14px; line-height: 1.35; }
.cta-section .cta-desc { color: var(--text-secondary); margin-bottom: 30px; font-size: 1rem; line-height: 1.8; }
.cta-meta { margin-top: 22px; font-family: "JetBrains Mono", ui-monospace, monospace; font-size: .78rem; color: var(--text-secondary); letter-spacing: .03em; }

/* ---------- 页脚 ---------- */
.site-footer { background: #0A0C0F; border-top: 1px solid var(--border); padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid var(--border); }
.footer-brand .logo { margin-bottom: 12px; display: inline-flex; }
.footer-brand p { color: var(--text-secondary); font-size: .88rem; line-height: 1.75; max-width: 300px; }
.footer-col h4 { font-size: .9rem; font-weight: 700; color: var(--text-primary); margin-bottom: 16px; letter-spacing: .04em; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--text-secondary); font-size: .88rem; transition: color .2s; }
.footer-col a:hover { color: var(--primary); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding: 18px 0; color: var(--text-secondary); font-size: .8rem; flex-wrap: wrap; gap: 8px; }
.footer-bottom .mono { font-family: "JetBrains Mono", ui-monospace, monospace; }

/* ---------- 响应式 ---------- */
@media (min-width: 769px) {
  .nav-links .nav-cta { display: none !important; }
}

@media (max-width: 1024px) {
  .category-hero-grid { gap: 32px; }
  .category-hero h1 { font-size: 1.9rem; }
  .type-grid { grid-template-columns: 1fr 1fr; }
  .type-grid .type-card:first-child { grid-column: 1 / -1; }
  .steps { grid-template-columns: 1fr 1fr; gap: 20px; }
  .step + .step::before { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .scenario-layout { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links { position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; background: rgba(14,17,22,.98); padding: 8px 24px 20px; gap: 4px; display: none; border-bottom: 1px solid var(--border); box-shadow: 0 16px 40px rgba(0,0,0,.5); }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.05); width: 100%; }
  .nav-links .nav-cta { display: block !important; margin-top: 10px; text-align: center; padding: 12px; }
  .desktop.nav-cta { display: none; }
  .section { padding: 56px 0; }
  .category-hero { padding: 40px 0 52px; }
  .category-hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .category-hero h1 { font-size: 1.65rem; }
  .category-hero-desc { font-size: .96rem; }
  .hero-visual .cover-frame img { height: 220px; }
  .data-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .scenario-list { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-brand p { max-width: 100%; }
}

@media (max-width: 520px) {
  .section { padding: 44px 0; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn-primary, .hero-ctas .btn-secondary { text-align: center; width: 100%; }
  .data-grid { grid-template-columns: 1fr; }
  .type-grid { grid-template-columns: 1fr; }
  .type-grid .type-card:first-child { grid-column: auto; }
  .filter-chips { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 8px; margin-bottom: -8px; scrollbar-width: none; }
  .filter-chips::-webkit-scrollbar { display: none; }
  .chip { flex-shrink: 0; }
  .cta-section h2 { font-size: 1.5rem; }
  .faq-answer-inner { padding-right: 16px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}