/* roulang page: index */
:root {
  --bg-0: #080a0f;
  --bg-1: #10131a;
  --bg-2: #171b26;
  --line-1: #232a3a;
  --line-2: #314156;
  --tx-0: #f1f3f8;
  --tx-1: #aab3c5;
  --tx-2: #6f7a91;
  --brand-1: #e6225f;
  --brand-2: #ff5f8a;
  --brand-3: #8e6efb;
  --radius-card: 8px;
  --radius-btn: 4px;
  --radius-badge: 999px;
  --shadow-card: 0 12px 30px rgba(0,0,0,.35);
  --shadow-hover: 0 18px 44px rgba(0,0,0,.5);
  --container: 1200px;
  --section-y: clamp(64px, 8vw, 110px);
  --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg-0);
  color: var(--tx-0);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: inline-block; vertical-align: middle; }
a {
  color: var(--tx-0);
  text-decoration: none;
  transition: color .2s ease-out, border-color .2s ease-out, background .2s ease-out, opacity .2s ease-out;
}
a:hover, a:focus { color: var(--tx-0); }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
button { cursor: pointer; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px dashed var(--brand-1);
  outline-offset: 3px;
}
.row { max-width: var(--container); }
.columns { padding-left: .9375rem; padding-right: .9375rem; }
section { position: relative; }
.button { margin: 0; }

/* 顶部状态条 */
.site-header { background: var(--bg-2); border-bottom: 1px solid var(--line-1); position: relative; z-index: 50; }
.topbar { background: #0c0f16; border-bottom: 1px solid rgba(35,42,58,.7); }
.topbar-inner { min-height: 36px; display: flex; align-items: center; justify-content: space-between; font-size: 12px; letter-spacing: .04em; color: var(--tx-2); }
.topbar-links { display: flex; align-items: center; }
.topbar-links a { display: inline-flex; align-items: center; min-height: 36px; padding: 0 14px; color: var(--tx-1); position: relative; font-size: 12px; letter-spacing: .06em; }
.topbar-links a + a { border-left: 1px solid var(--line-1); }
.topbar-links a::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 0; height: 2px; background: var(--brand-1); opacity: 0; transform: scaleX(.3); transition: .2s ease-out; }
.topbar-links a:hover, .topbar-links a:focus { color: var(--brand-2); }
.topbar-links a:hover::after, .topbar-links a:focus::after { opacity: 1; transform: scaleX(1); }

/* 主导航 */
.mainnav { position: relative; z-index: 60; }
.nav-row { display: flex; align-items: center; justify-content: space-between; min-height: 72px; }
.brand { display: flex; flex-direction: column; justify-content: center; line-height: 1; padding: 10px 0 10px 2px; }
.brand-main { font-size: 26px; font-weight: 800; letter-spacing: -.01em; color: var(--tx-0); }
.brand-main strong { display: inline-block; margin-right: .2em; color: var(--brand-1); font-weight: 800; }
.brand-sub { font-size: 11px; color: var(--tx-2); letter-spacing: .28em; margin-top: 5px; }
.nav-links { display: flex; align-items: center; gap: 0; margin-left: auto; }
.nav-links a { position: relative; display: inline-flex; align-items: center; min-height: 72px; padding: 0 20px; font-size: 15px; font-weight: 600; color: var(--tx-1); letter-spacing: .02em; }
.nav-links a::after { content: ""; position: absolute; left: 18px; right: 18px; bottom: 0; height: 2px; background: var(--brand-1); opacity: 0; transform: translateY(4px); transition: .2s ease-out; }
.nav-links a:hover, .nav-links a:focus { color: var(--tx-0); }
.nav-links a:hover::after, .nav-links a:focus::after, .nav-links a.is-active::after { opacity: 1; transform: translateY(0); }
.nav-links a.is-active { color: var(--tx-0); }
.nav-cta { margin-left: 16px; }
.btn-primary, .btn-secondary, .btn-quiet, .nav-cta .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  line-height: 1;
  transition: background .2s ease-out, border-color .2s ease-out, color .2s ease-out, transform .2s ease-out, box-shadow .2s ease-out;
}
.btn-primary { background: var(--brand-1); color: #fff; }
.btn-primary:hover, .btn-primary:focus { background: var(--brand-2); color: #fff; box-shadow: 0 10px 24px rgba(230,34,95,.28); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }
.btn-secondary { background: transparent; border-color: #3b4457; color: var(--tx-0); }
.btn-secondary:hover, .btn-secondary:focus { border-color: var(--brand-1); color: var(--brand-2); }
.btn-secondary:active { transform: translateY(1px); }
.btn-quiet { background: transparent; color: var(--tx-1); padding: 0 6px; }
.btn-quiet:hover, .btn-quiet:focus { color: var(--brand-2); }
.nav-cta { display: inline-flex; }
.nav-toggle { display: none; background: transparent; border: 1px solid var(--line-1); color: var(--tx-0); font-size: 14px; min-height: 40px; padding: 0 14px; border-radius: var(--radius-btn); letter-spacing: .08em; }
.mobile-menu { display: none; background: var(--bg-2); border-top: 1px solid var(--line-1); }
.mobile-menu.open { display: block; }
.mobile-menu a { display: flex; align-items: center; min-height: 46px; padding: 0 16px; border-bottom: 1px solid var(--line-1); font-size: 15px; font-weight: 500; color: var(--tx-1); }
.mobile-menu a.is-active, .mobile-menu a:active { color: var(--brand-2); }

/* Hero */
.hero { background: var(--bg-0); overflow: hidden; padding: clamp(84px, 10vw, 160px) 0 clamp(64px, 7vw, 110px); min-height: 640px; display: flex; align-items: center; }
.hero-bg { position: absolute; inset: 0; z-index: 0; background-image: url("/assets/images/backpic/back-1.jpg"); background-size: cover; background-position: center 35%; }
.hero-bg::before { content: ""; position: absolute; inset: 0; background: linear-gradient(92deg, rgba(8,10,15,.97) 0%, rgba(8,10,15,.87) 42%, rgba(8,10,15,.46) 100%); }
.hero-bg::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 180px; background: linear-gradient(180deg, transparent, var(--bg-0)); }
.hero-inner { position: relative; z-index: 2; align-items: center; }
.hero-copy { padding-top: 0; }
.badge-top { display: inline-flex; align-items: center; background: rgba(230,34,95,.1); border: 1px solid rgba(230,34,95,.28); color: var(--brand-2); font-size: 13px; letter-spacing: .02em; padding: 7px 13px; border-radius: var(--radius-badge); margin-bottom: 24px; }
.badge-top .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--brand-1); display: inline-block; margin-right: 8px; }
.hero h1, .hero-title {
  font-size: clamp(40px, 6vw, 68px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -.02em;
  margin: 16px 0 24px;
  color: var(--tx-0);
  max-width: 850px;
}
.hero-title span { display: inline-block; overflow: hidden; vertical-align: top; animation: heroUp .6s cubic-bezier(.22,.8,.24,1) both; }
@keyframes heroUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.hero-lead { max-width: 660px; font-size: 16px; line-height: 1.9; color: var(--tx-1); margin: 0 0 28px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-bottom: 16px; }
.hero-cta .button { min-height: 48px; padding: 0 28px; }
.update-now { font-size: 13px; color: var(--tx-2); letter-spacing: .02em; display: flex; align-items: center; gap: 10px; }
.update-now::before { content: ""; width: 4px; height: 4px; border-radius: 50%; background: var(--brand-3); display: inline-block; }
.hero-stage { position: relative; }
.cover-stack { display: flex; justify-content: center; align-items: center; position: relative; }
.cover-card {
  position: relative;
  width: min(310px, 86%);
  border: 1px solid rgba(241,243,248,.18);
  border-radius: var(--radius-card);
  background: var(--bg-1);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transform: scale(.98);
  animation: coverIn .65s ease-out both;
}
@keyframes coverIn { from { opacity: 0; transform: scale(1.02); } to { opacity: 1; transform: scale(1); } }
.cover-card img { display: block; width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.cover-meta { display: flex; justify-content: space-between; align-items: center; padding: 15px 18px; background: var(--bg-2); border-top: 1px solid var(--line-1); font-size: 13px; color: var(--tx-1); }
.cover-meta .tag { color: var(--brand-2); font-weight: 600; letter-spacing: .02em; }
.cover-frame { position: absolute; left: 12px; top: 12px; right: 12px; bottom: 12px; border: 1px solid rgba(255,255,255,.08); pointer-events: none; border-radius: 4px; z-index: 1; }

/* 指标看板 */
.metrics-section { background: var(--bg-0); border-top: 1px solid var(--line-1); padding: 34px 0 24px; }
.metrics .columns { padding-top: 10px; padding-bottom: 10px; }
.metric-box { border-left: 1px solid var(--line-1); padding: 16px 0 16px 28px; }
.metric-box:first-child { border-left: 0; padding-left: 0; }
.metric-num { font-size: clamp(30px, 4vw, 48px); font-weight: 800; line-height: 1; color: var(--tx-0); letter-spacing: -.02em; margin-bottom: 12px; }
.metric-num small { font-size: .5em; color: var(--brand-2); font-weight: 600; margin-left: 4px; }
.metric-label { font-size: 13px; color: var(--tx-2); line-height: 1.6; max-width: 160px; }
.metric-design { width: 28px; height: 2px; background: var(--brand-1); opacity: .7; margin-top: 15px; }

/* 通用区块标题 */
.section-head { max-width: 820px; margin: 0 0 36px; }
.section-kicker { display: block; font-size: 12px; letter-spacing: .2em; color: var(--brand-1); text-transform: uppercase; margin-bottom: 12px; }
.section-head h2 { font-size: clamp(24px, 3vw, 36px); line-height: 1.25; font-weight: 700; margin: 10px 0 14px; color: var(--tx-0); letter-spacing: -.01em; }
.section-head p { color: var(--tx-1); font-size: 15px; line-height: 1.85; margin: 0; max-width: 780px; }

/* 服务矩阵 */
.index-section { padding: var(--section-y) 0; }
.index-section + .index-section { border-top: 1px solid var(--line-1); }
.matrix-list { margin: 0 0 18px; border-top: 1px solid var(--line-1); position: relative; }
.matrix-row { list-style: none; margin: 0; padding: 0; }
.matrix-row li { display: flex; align-items: center; gap: 22px; padding: 15px 8px; border-bottom: 1px solid var(--line-1); min-height: 72px; transition: background .2s ease-out; }
.matrix-row li:hover { background: var(--bg-2); }
.matrix-row .rank-num { font-size: 28px; font-weight: 100; color: rgba(111,122,145,.44); line-height: 1; width: 48px; flex: 0 0 48px; transition: color .2s ease-out, font-weight .2s ease-out; font-variant-numeric: tabular-nums; }
.matrix-row li:hover .rank-num { color: var(--brand-1); font-weight: 300; }
.matrix-main { flex: 1 1 auto; min-width: 0; }
.matrix-title { font-size: 16px; font-weight: 600; color: var(--tx-0); letter-spacing: .01em; margin-bottom: 3px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.matrix-title span { color: var(--brand-2); font-weight: 400; margin-left: 4px; }
.matrix-desc { font-size: 13px; color: var(--tx-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.matrix-tags { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; flex: 0 0 auto; max-width: 30%; }
.badge { display: inline-flex; align-items: center; min-height: 22px; padding: 0 9px; border-radius: var(--radius-badge); font-size: 12px; font-weight: 500; background: rgba(23,27,38,.9); border: 1px solid var(--line-2); color: var(--tx-1); white-space: nowrap; }
.badge.badge-hot { background: rgba(230,34,95,.08); border-color: rgba(230,34,95,.4); color: var(--brand-2); }
.badge.badge-ok { background: rgba(142,110,251,.08); border-color: rgba(142,110,251,.35); color: #c9bcff; }
.badge.badge-dim { color: var(--tx-2); }
.matrix-time { font-size: 12px; color: var(--tx-2); text-align: right; flex: 0 0 86px; font-variant-numeric: tabular-nums; }
.text-link { display: inline-flex; align-items: center; gap: 6px; font-size: 15px; font-weight: 600; color: var(--brand-2); border-bottom: 1px solid transparent; padding-bottom: 2px; }
.text-link:hover, .text-link:focus { border-color: var(--brand-1); color: var(--tx-0); }
.text-link::after { content: "→"; font-weight: 400; transition: transform .2s ease-out; }
.text-link:hover::after, .text-link:focus::after { transform: translateX(4px); }
.matrix-extra { display: grid; grid-template-columns: 1.1fr .9fr .9fr; gap: 20px; margin-top: 40px; align-items: stretch; }
.extra-panel { background: var(--bg-1); border: 1px solid var(--line-1); border-radius: var(--radius-card); padding: 25px; min-height: 100%; box-shadow: var(--shadow-card); }
.extra-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.extra-head h3 { margin: 0; font-size: 16px; font-weight: 700; }
.extra-head .tiny { font-size: 12px; color: var(--tx-2); }
.ranking-tag-list { list-style: none; margin: 0; padding: 0; }
.ranking-tag-list li { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 10px 0; border-bottom: 1px dashed var(--line-1); font-size: 14px; color: var(--tx-1); }
.ranking-tag-list li:last-child { border-bottom: 0; }
.ranking-tag-list .count { font-size: 12px; color: var(--tx-2); }
.ranking-tag-list .key { color: var(--tx-0); font-weight: 500; }
.mini-index { list-style: none; margin: 0; padding: 0; }
.mini-index li { display: flex; gap: 14px; align-items: center; padding: 7px 0; border-bottom: 1px dashed var(--line-1); }
.mini-index li:last-child { border-bottom: 0; }
.mini-cover { flex: 0 0 52px; width: 52px; height: 64px; object-fit: cover; border-radius: 3px; border: 1px solid var(--line-1); }
.mini-text { min-width: 0; }
.mini-text b { display: block; font-size: 14px; color: var(--tx-0); font-weight: 600; margin-bottom: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mini-text span { font-size: 12px; color: var(--tx-2); }

/* 对比区 */
.compare-section { background: var(--bg-1); border-top: 1px solid var(--line-1); }
.compare-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; align-items: start; }
.compare-card { background: var(--bg-2); border: 1px solid var(--line-1); border-radius: var(--radius-card); box-shadow: var(--shadow-card); padding: 32px 28px; transition: border-color .2s ease-out, box-shadow .2s ease-out; }
.compare-card.pro { border-color: rgba(230,34,95,.55); }
.compare-card.pro:hover { border-color: var(--brand-1); box-shadow: var(--shadow-hover); }
.compare-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.compare-top h3 { font-size: 20px; margin: 0; font-weight: 700; }
.plan-dot { display: inline-flex; align-items: center; gap: 7px; font-size: 12px; color: var(--tx-2); }
.plan-dot::before { width: 8px; height: 8px; border-radius: 50%; content: ""; background: var(--tx-2); }
.compare-card.pro .plan-dot::before { background: var(--brand-1); box-shadow: 0 0 0 4px rgba(230,34,95,.1); }
.compare-list { border-top: 1px solid var(--line-1); }
.compare-row { display: flex; align-items: center; min-height: 46px; border-bottom: 1px solid var(--line-1); font-size: 14px; }
.compare-row > span:first-child { width: 92px; color: var(--tx-2); flex: none; }
.compare-row > span:last-child { color: var(--tx-1); }
.compare-row.highlight { background: rgba(230,34,95,.08); }
.compare-row.highlight > span:last-child { color: var(--tx-0); font-weight: 600; }
.compare-action { margin-top: 24px; display: flex; gap: 12px; flex-wrap: wrap; }

/* FAQ */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item { border: 1px solid var(--line-1); background: var(--bg-1); border-radius: var(--radius-card); margin-bottom: 12px; overflow: hidden; }
.faq-item .free-title { display: flex; align-items: center; gap: 16px; min-height: 62px; padding: 0 22px; font-size: 16px; font-weight: 600; color: var(--tx-0); }
.faq-item .free-title .q-no { color: var(--brand-1); font-weight: 800; flex: 0 0 auto; }
.faq-item .free-title:hover { background: var(--bg-2); }
.accordion-title.faq-title { background: transparent; border: 0; display: flex; align-items: center; min-height: 62px; padding: 0 20px; font-size: 16px; font-weight: 600; color: var(--tx-0); }
.accordion-title.faq-title::before { content: none; }
.accordion-title.faq-title::after { content: ""; width: 10px; height: 10px; border-right: 2px solid var(--tx-2); border-bottom: 2px solid var(--tx-2); transform: rotate(45deg); transition: transform .2s ease-out; margin-left: auto; }
.accordion-title.faq-title:hover, .accordion-title.faq-title:focus { background: var(--bg-1); color: var(--brand-2); }
.accordion-item .accordion-title.faq-title.is-active::after { transform: rotate(225deg); }
.accordion-content.faq-content { background: var(--bg-1); border: 0; border-top: 1px solid var(--line-1); color: var(--tx-1); font-size: 15px; line-height: 1.8; }
.accordion-content.faq-content p { margin: 0; }

/* 转化表单 */
.capture-section { border-top: 1px solid var(--line-1); background: var(--bg-0); }
.capture-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 7vw, 90px); align-items: center; }
.capture-intro .lead-title { font-size: clamp(22px, 3vw, 32px); font-weight: 700; line-height: 1.35; margin-bottom: 16px; }
.capture-intro p { color: var(--tx-1); max-width: 500px; }
.capture-features { list-style: none; margin: 24px 0 0; padding: 0; }
.capture-features li { display: flex; align-items: center; gap: 12px; padding: 8px 0; font-size: 15px; color: var(--tx-1); }
.capture-features li::before { content: ""; flex: 0 0 5px; width: 5px; height: 5px; border-radius: 50%; background: var(--brand-1); }
.capture-box { background: var(--bg-1); border: 1px solid var(--line-1); border-radius: var(--radius-card); padding: clamp(24px, 3vw, 36px); max-width: 560px; box-shadow: var(--shadow-card); }
.form-title { margin: 0 0 6px; font-size: 20px; font-weight: 700; }
.form-note { color: var(--tx-2); font-size: 13px; margin-bottom: 24px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; color: var(--tx-1); margin-bottom: 8px; letter-spacing: .02em; }
.foundation-select, .custom-input, .form-control, select, input[type="email"], input[type="text"] { width: 100%; min-height: 46px; background: var(--bg-0); border: 1px solid var(--line-1); color: var(--tx-0); border-radius: var(--radius-btn); padding: 12px 14px; transition: border-color .2s ease-out, box-shadow .2s ease-out; appearance: none; }
select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236f7a91' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; padding-right: 36px; }
select option { background: var(--bg-2); }
.form-control:focus, .foundation-select:focus, input:focus, select:focus { border-color: var(--brand-1); box-shadow: 0 0 0 3px rgba(230,34,95,.12); outline: none; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.radio-group { display: flex; flex-wrap: wrap; gap: 18px; margin-bottom: 24px; }
.radio-group label { display: inline-flex; align-items: center; gap: 7px; min-height: 24px; font-size: 14px; color: var(--tx-1); margin: 0; cursor: pointer; }
.radio-group input[type="radio"] { accent-color: var(--brand-1); width: 15px; height: 15px; }
.form-success { display: none; margin-top: 14px; font-size: 14px; color: #8bd6b5; border: 1px solid rgba(139,214,181,.3); background: rgba(139,214,181,.06); border-radius: var(--radius-btn); padding: 12px 14px; }
.form-success.show { display: block; }

/* CTA strip */
.final-cta { background-color: var(--bg-1); border-top: 1px solid var(--line-1); background-image: linear-gradient(90deg, rgba(8,10,15,.94) 0%, rgba(8,10,15,.82) 100%), url("/assets/images/backpic/back-2.jpg"); background-size: cover; background-position: center; padding: clamp(46px, 7vw, 88px) 0; text-align: center; }
.final-cta h2 { font-size: clamp(24px, 3.6vw, 40px); font-weight: 700; color: var(--tx-0); margin: 0 0 10px; }
.final-cta p { color: var(--tx-1); max-width: 620px; margin: 0 auto 28px; font-size: 15px; }

/* Footer */
.site-footer { background: var(--bg-0); border-top: 1px solid var(--line-1); padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 36px; padding-bottom: 44px; }
.footer-brand { margin-bottom: 14px; font-size: 24px; font-weight: 800; color: var(--tx-0); display: block; }
.footer-brand em { font-style: normal; color: var(--brand-1); margin-right: .1em; }
.footer-desc { font-size: 13px; color: var(--tx-2); line-height: 1.85; margin-bottom: 16px; max-width: 300px; }
.footer-col h4 { font-size: 14px; letter-spacing: .05em; margin: 0 0 18px; color: var(--tx-0); }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { font-size: 13px; color: var(--tx-1); display: inline-flex; align-items: center; gap: 6px; }
.footer-col a::before { content: "·"; color: var(--brand-1); }
.footer-col a:hover, .footer-col a:focus { color: var(--brand-2); }
.footer-status { font-size: 13px; color: var(--tx-2); line-height: 2; }
.footer-status strong { color: var(--tx-1); font-weight: 500; }
.footer-bottom { border-top: 1px solid var(--line-1); padding: 18px 0; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.footer-bottom .legal { font-size: 12px; color: var(--tx-2); }

/* 响应式 */
@media (max-width: 1024px) {
  .matrix-extra { grid-template-columns: 1fr 1fr; }
  .matrix-extra .extra-panel:last-child { grid-column: span 2; }
}
@media (max-width: 900px) {
  .compare-inner, .capture-grid { grid-template-columns: 1fr; }
  .capture-box { max-width: 100%; }
  .hero-stage { margin-top: 50px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-row { min-height: 64px; }
  .topbar .topbar-status { display: none; }
  .topbar-inner { justify-content: center; }
  .matrix-row { flex-wrap: wrap; gap: 8px 12px; padding: 14px 4px; }
  .matrix-tags { max-width: 100%; justify-content: flex-start; order: 4; flex-basis: 100%; }
  .matrix-time { flex: 1 auto; text-align: right; }
  .matrix-row .rank-num { width: 34px; flex-basis: 34px; font-size: 22px; }
  .matrix-title, .matrix-desc { white-space: normal; }
  .metrics .columns { flex: 0 0 50%; max-width: 50%; }
  .metric-box { border-left: 0; border-top: 1px solid var(--line-1); padding: 18px 0 12px; }
  .metric-box:nth-child(-n+2) { border-top: 0; }
  .metrics { display: flex; flex-wrap: wrap; }
}
@media (max-width: 520px) {
  .hero { padding-top: 72px; padding-bottom: 64px; }
  .hero h1, .hero-title { font-size: 34px; }
  .matrix-extra { grid-template-columns: 1fr; }
  .matrix-extra .extra-panel:last-child { grid-column: span 1; }
  .row .columns { padding-left: 16px; padding-right: 16px; }
  .row { max-width: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .footer-bottom { justify-content: center; text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-title span, .cover-card { animation: none; }
  .text-link::after, .btn-primary, .btn-secondary { transition: none; transform: none; }
}

/* roulang page: category1 */
:root {
  --bg-0: #080a0f;
  --bg-1: #10131a;
  --bg-2: #171b26;
  --line-1: #232a3a;
  --line-2: #314156;
  --tx-0: #f1f3f8;
  --tx-1: #aab3c5;
  --tx-2: #6f7a91;
  --brand-1: #e6225f;
  --brand-2: #ff5f8a;
  --brand-3: #8e6efb;
  --radius-card: 8px;
  --radius-btn: 4px;
  --radius-badge: 999px;
  --shadow-card: 0 12px 30px rgba(0, 0, 0, .35);
  --shadow-hover: 0 18px 44px rgba(0, 0, 0, .5);
  --container: 1200px;
  --section-y: clamp(64px, 8vw, 110px);
  --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg-0);
  color: var(--tx-0);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6, p, ul, dl, dd, figure, blockquote {
  margin: 0;
  padding: 0;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: inline-block;
  vertical-align: middle;
}

a {
  color: var(--tx-0);
  text-decoration: none;
  transition: color .2s ease-out, border-color .2s ease-out, background .2s ease-out, opacity .2s ease-out;
}

a:hover,
a:focus {
  color: var(--tx-0);
}

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

button {
  cursor: pointer;
  border: 0;
  background: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px dashed var(--brand-1);
  outline-offset: 3px;
}

.row {
  max-width: var(--container);
  width: 100%;
  margin: 0 auto;
}

.columns {
  padding-left: .9375rem;
  padding-right: .9375rem;
}

section {
  position: relative;
}

.skip-link {
  position: fixed;
  left: 12px;
  top: 8px;
  z-index: 200;
  background: var(--brand-1);
  color: #fff;
  padding: 10px 16px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  transition: .2s ease-out;
}

.skip-link:focus {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

/* 顶部状态条 */
.site-header {
  background: var(--bg-2);
  border-bottom: 1px solid var(--line-1);
  position: relative;
  z-index: 50;
}

.topbar {
  background: #0c0f16;
  border-bottom: 1px solid rgba(35, 42, 58, .7);
}

.topbar-inner {
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--tx-2);
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 16px;
}

.topbar-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar-links {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
}

.topbar-links a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  color: var(--tx-1);
  position: relative;
  font-size: 12px;
  letter-spacing: .06em;
}

.topbar-links a+a {
  border-left: 1px solid var(--line-1);
}

.topbar-links a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 2px;
  background: var(--brand-1);
  opacity: 0;
  transform: scaleX(.3);
  transition: .2s ease-out;
}

.topbar-links a:hover,
.topbar-links a:focus {
  color: var(--brand-2);
}

.topbar-links a:hover::after,
.topbar-links a:focus::after {
  opacity: 1;
  transform: scaleX(1);
}

/* 主导航 */
.mainnav {
  position: relative;
  z-index: 60;
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 16px;
}

.brand {
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1;
  padding: 10px 0 10px 2px;
  flex-shrink: 0;
}

.brand-main {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--tx-0);
}

.brand-main strong {
  display: inline-block;
  margin-right: .2em;
  color: var(--brand-1);
  font-weight: 800;
}

.brand-sub {
  font-size: 11px;
  color: var(--tx-2);
  letter-spacing: .28em;
  margin-top: 5px;
}

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

.nav-links a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 72px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--tx-1);
  letter-spacing: .02em;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 0;
  height: 2px;
  background: var(--brand-1);
  opacity: 0;
  transform: translateY(4px);
  transition: .2s ease-out;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--tx-0);
}

.nav-links a:hover::after,
.nav-links a:focus::after,
.nav-links a.is-active::after {
  opacity: 1;
  transform: translateY(0);
}

.nav-links a.is-active {
  color: var(--tx-0);
}

.nav-cta {
  margin-left: 16px;
  display: inline-flex;
  flex-shrink: 0;
}

.btn-primary,
.btn-secondary,
.btn-quiet,
.nav-cta .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  line-height: 1;
  transition: background .2s ease-out, border-color .2s ease-out, color .2s ease-out, transform .2s ease-out, box-shadow .2s ease-out;
}

.btn-primary {
  background: var(--brand-1);
  color: #fff;
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--brand-2);
  color: #fff;
  box-shadow: 0 10px 24px rgba(230, 34, 95, .28);
  transform: translateY(-1px);
}

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

.btn-secondary {
  background: transparent;
  border-color: #3b4457;
  color: var(--tx-0);
}

.btn-secondary:hover,
.btn-secondary:focus {
  border-color: var(--brand-1);
  color: var(--brand-2);
}

.btn-secondary:active {
  transform: translateY(1px);
}

.btn-quiet {
  background: transparent;
  color: var(--tx-1);
  padding: 0 6px;
}

.btn-quiet:hover,
.btn-quiet:focus {
  color: var(--brand-2);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line-1);
  color: var(--tx-0);
  font-size: 14px;
  min-height: 40px;
  padding: 0 14px;
  border-radius: var(--radius-btn);
  letter-spacing: .08em;
}

.mobile-menu {
  display: none;
  background: var(--bg-2);
  border-top: 1px solid var(--line-1);
}

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

.mobile-menu a {
  display: flex;
  align-items: center;
  min-height: 46px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line-1);
  font-size: 15px;
  font-weight: 500;
  color: var(--tx-1);
}

.mobile-menu a.is-active,
.mobile-menu a:active {
  color: var(--brand-2);
}

.mobile-menu .mobile-cta {
  color: var(--brand-2);
  font-weight: 600;
  letter-spacing: .04em;
}

/* 分类页首屏 */
.cat-hero {
  background: var(--bg-0);
  overflow: hidden;
  padding: clamp(46px, 5.5vw, 84px) 0 0;
  min-height: 560px;
  display: flex;
  align-items: center;
}

.cat-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: url("/assets/images/backpic/back-3.jpg");
  background-size: cover;
  background-position: center 30%;
}

.cat-hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(96deg, rgba(8, 10, 15, .98) 0%, rgba(8, 10, 15, .94) 45%, rgba(8, 10, 15, .62) 100%);
}

.cat-hero-bg::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 140px;
  background: linear-gradient(180deg, transparent, var(--bg-0));
}

.cat-hero-wrap {
  position: relative;
  z-index: 2;
  padding-bottom: clamp(40px, 6vw, 96px);
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 18px 0 12px;
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--tx-2);
}

.breadcrumb a {
  color: var(--tx-1);
}

.breadcrumb a:hover {
  color: var(--brand-2);
}

.breadcrumb-sep {
  color: var(--tx-2);
  opacity: .7;
}

.breadcrumb-current {
  color: var(--tx-1);
}

.cat-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--brand-2);
  background: rgba(230, 34, 95, .06);
  margin-bottom: 18px;
}

.cat-hero h1 {
  font-size: clamp(34px, 4.6vw, 60px);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--tx-0);
  max-width: 760px;
}

.cat-hero h1 em {
  font-style: normal;
  color: var(--brand-1);
}

.cat-lead {
  margin-top: 20px;
  max-width: 660px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--tx-1);
}

.cat-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
  padding: 0;
  max-width: 520px;
}

.quickstat {
  padding: 14px 14px 13px;
  border-left: 1px solid var(--line-1);
  background: linear-gradient(90deg, rgba(35, 42, 58, .24), transparent);
}

.quickstat .q-num {
  display: block;
  font-size: clamp(24px, 2.4vw, 34px);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--tx-0);
}

.quickstat .q-num i {
  font-style: normal;
  color: var(--brand-2);
  font-size: .72em;
  margin-left: 2px;
}

.quickstat .q-label {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  color: var(--tx-2);
  letter-spacing: .04em;
}

.cat-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.cat-actions .btn-primary,
.cat-actions .btn-secondary {
  min-height: 46px;
  padding: 0 24px;
}

.cat-cover-col {
  padding-top: 22px;
}

.update-card {
  max-width: 315px;
  margin-left: auto;
  margin-right: 0;
  border: 1px solid var(--line-2);
  background: var(--bg-2);
  border-radius: var(--radius-card);
  padding: 10px;
  box-shadow: var(--shadow-card);
  transition: border-color .2s ease-out, box-shadow .2s ease-out;
}

.update-card:hover {
  border-color: var(--brand-1);
  box-shadow: var(--shadow-hover);
}

.update-card-media {
  position: relative;
  border-radius: 5px;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  background: var(--bg-1);
}

.update-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.update-card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(8, 10, 15, .84));
}

.uc-badge {
  position: absolute;
  left: 12px;
  top: 12px;
  z-index: 2;
  background: var(--brand-1);
  color: #fff;
  border-radius: 999px;
  font-size: 11px;
  line-height: 1;
  padding: 6px 10px;
  font-weight: 600;
  letter-spacing: .05em;
}

.uc-date {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 10px;
  z-index: 2;
  color: var(--tx-0);
  font-size: 13px;
  font-weight: 600;
}

.update-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 6px 6px;
  color: var(--tx-2);
  font-size: 12px;
}

.update-card-foot strong {
  color: var(--tx-1);
  font-weight: 600;
}

/* 筛选与排序 */
.filter-section {
  background: var(--bg-1);
  border-top: 1px solid var(--line-1);
  border-bottom: 1px solid var(--line-1);
  padding: 0;
  scroll-margin-top: 80px;
}

.filter-panel {
  padding: 22px 0;
}

.filterbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.filter-title {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  font-size: 12px;
  color: var(--tx-2);
  letter-spacing: .08em;
  flex: 0 0 auto;
  padding-top: 2px;
}

.filter-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.filter-tag,
.sort-tag {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 13px;
  border: 1px solid var(--line-1);
  border-radius: 999px;
  background: transparent;
  color: var(--tx-1);
  font-size: 13px;
  line-height: 1;
  letter-spacing: .02em;
  transition: color .2s ease-out, border-color .2s ease-out, background .2s ease-out;
}

.filter-tag:hover,
.sort-tag:hover {
  color: var(--tx-0);
  border-color: var(--line-2);
}

.filter-tag.is-on,
.sort-tag.is-on {
  background: var(--brand-1);
  border-color: var(--brand-1);
  color: #fff;
}

.sort-area {
  display: flex;
  align-items: center;
  gap: 10px;
}

.filter-result {
  margin-top: 16px;
  font-size: 13px;
  color: var(--tx-2);
  letter-spacing: .02em;
}

/* 主体内容区 */
.board-section {
  background: var(--bg-0);
  padding: clamp(44px, 6vw, 76px) 0 0;
}

.layout-main {
  align-items: flex-start;
}

.board-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--line-1);
  padding-bottom: 14px;
  margin-bottom: 24px;
}

.board-head h2 {
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--tx-0);
}

.board-head h2 em {
  font-style: normal;
  color: var(--brand-1);
}

.board-sub {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  font-weight: 400;
  color: var(--tx-2);
  letter-spacing: .04em;
}

.brief-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px 16px;
}

.brief-card {
  position: relative;
  background: var(--bg-1);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color .2s ease-out, box-shadow .2s ease-out, transform .2s ease-out;
}

.brief-card:hover {
  border-color: var(--brand-1);
  box-shadow: var(--shadow-card);
}

.brief-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background: var(--bg-2);
}

.brief-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .35s ease-out;
}

.brief-card:hover .brief-media img {
  transform: scale(1.035);
}

.brief-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 10, 15, 0) 66%, rgba(8, 10, 15, .82));
  pointer-events: none;
}

.brief-badge {
  position: absolute;
  left: 10px;
  top: 10px;
  z-index: 2;
  border-radius: 999px;
  padding: 5px 9px;
  font-size: 11px;
  line-height: 1;
  font-weight: 600;
  letter-spacing: .02em;
  color: #fff;
  background: var(--brand-1);
}

.brief-badge.done {
  background: var(--brand-3);
}

.brief-badge.soft {
  background: rgba(23, 27, 38, .86);
  border: 1px solid var(--line-2);
}

.brief-progress {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 10px;
  z-index: 2;
  font-size: 13px;
  font-weight: 600;
  color: var(--tx-0);
  line-height: 1.2;
}

.brief-body {
  padding: 14px 15px 16px;
}

.brief-title {
  display: block;
  font-size: 16px;
  line-height: 1.4;
  font-weight: 650;
  color: var(--tx-0);
  letter-spacing: .01em;
  overflow-wrap: break-word;
}

.brief-meta {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--tx-2);
}

.brief-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.brief-tag {
  display: inline-flex;
  align-items: center;
  min-height: 20px;
  padding: 0 7px;
  border: 1px solid var(--line-1);
  border-radius: 4px;
  font-size: 11px;
  line-height: 1;
  color: var(--tx-1);
  letter-spacing: .02em;
}

.brief-tag.red {
  color: var(--brand-2);
  border-color: rgba(230, 34, 95, .45);
}

/* 分页 */
.pagination-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 30px;
  padding-top: 18px;
  border-top: 1px solid var(--line-1);
  flex-wrap: wrap;
}

.pager-count {
  font-size: 13px;
  color: var(--tx-2);
}

.pager-list {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.page-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  padding: 0 10px;
  border: 1px solid var(--line-1);
  border-radius: 4px;
  font-size: 13px;
  line-height: 1;
  color: var(--tx-1);
  background: transparent;
  transition: border-color .2s ease-out, background .2s ease-out, color .2s ease-out;
}

a.page-item:hover {
  border-color: var(--brand-1);
  color: var(--brand-2);
}

.page-item.current {
  background: var(--brand-1);
  border-color: var(--brand-1);
  color: #fff;
}

.page-item.disabled {
  opacity: .45;
  cursor: not-allowed;
  user-select: none;
}

/* 侧栏 */
.cat-aside {
  padding-left: 8px;
}

.side-card {
  background: var(--bg-1);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-card);
  padding: 20px 20px 16px;
  margin-bottom: 18px;
}

.side-card .side-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--tx-0);
  letter-spacing: -.01em;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-1);
  margin-bottom: 6px;
}

.side-title .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand-1);
  flex: 0 0 auto;
  box-shadow: 0 0 0 4px rgba(230, 34, 95, .13);
}

.hot-list {
  padding: 0;
  margin: 0;
}

.hot-item {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
  padding: 0 4px;
  border-bottom: 1px dashed rgba(35, 42, 58, .6);
}

.hot-rank {
  flex: 0 0 24px;
  font-size: 15px;
  font-weight: 300;
  color: var(--tx-2);
  transition: color .2s ease-out;
  letter-spacing: .02em;
}

.hot-item:hover .hot-rank {
  color: var(--brand-1);
}

.hot-info {
  flex: 1 1 auto;
  min-width: 0;
}

.hot-name {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--tx-0);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
}

.hot-name small {
  font-size: 11px;
  color: var(--tx-2);
  font-weight: 400;
  margin-left: 6px;
}

.hot-view {
  font-size: 12px;
  color: var(--tx-2);
  flex: 0 0 auto;
}

.hot-arrow {
  color: var(--line-2);
  font-size: 14px;
  flex: 0 0 auto;
}

.hot-item:hover .hot-arrow {
  color: var(--brand-2);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding-top: 12px;
}

.cloud-tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 9px;
  border: 1px solid var(--line-1);
  border-radius: 999px;
  font-size: 12px;
  color: var(--tx-1);
  background: transparent;
  transition: border-color .2s ease-out, color .2s ease-out;
}

.cloud-tag:hover {
  border-color: var(--brand-1);
  color: var(--brand-2);
}

.aside-bottom-link {
  display: block;
  padding-top: 12px;
}

.aside-note {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line-1);
}

.aside-note p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--tx-1);
  margin-bottom: 14px;
}

/* 信息流程 */
.feature-section {
  padding: var(--section-y) 0;
  background: var(--bg-0);
  border-top: 1px solid var(--line-1);
}

.feature-grid {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: clamp(32px, 6vw, 76px);
  align-items: center;
}

.feature-copy h2 {
  font-size: clamp(25px, 3vw, 36px);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--tx-0);
  max-width: 460px;
}

.feature-copy h2 em {
  font-style: normal;
  color: var(--brand-1);
}

.feature-copy p {
  margin-top: 18px;
  font-size: 15px;
  color: var(--tx-1);
  line-height: 1.85;
  max-width: 440px;
}

.feature-flow {
  border-left: 1px solid var(--line-1);
  padding: 0 0 0 clamp(20px, 3vw, 40px);
}

.flow-item {
  position: relative;
  padding: 0 0 30px 16px;
}

.flow-item:last-child {
  padding-bottom: 0;
}

.flow-item::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 9px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--brand-1);
  box-shadow: 0 0 0 5px rgba(230, 34, 95, .1);
}

.flow-item .flow-step {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--brand-2);
  margin-bottom: 6px;
}

.flow-item h3 {
  font-size: 18px;
  font-weight: 650;
  color: var(--tx-0);
  letter-spacing: -.01em;
  line-height: 1.35;
}

.flow-item p {
  margin-top: 7px;
  color: var(--tx-1);
  font-size: 14px;
  line-height: 1.8;
}

/* FAQ */
.faq-section {
  background: var(--bg-1);
  border-top: 1px solid var(--line-1);
  padding: var(--section-y) 0;
}

.faq-section .section-label {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--brand-2);
  font-weight: 600;
}

.faq-section h2 {
  margin-top: 8px;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -.01em;
}

.faq-section h2 em {
  font-style: normal;
  color: var(--brand-1);
}

.faq-section .section-lead {
  margin-top: 12px;
  color: var(--tx-1);
  max-width: 620px;
  font-size: 15px;
}

.faq-accordion {
  max-width: 860px;
  margin: 34px auto 0;
}

.accordion.accordion-faq .accordion-item {
  background: transparent;
  border: 0;
  margin-bottom: 10px;
}

.accordion.accordion-faq .accordion-title {
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--line-1);
  background: var(--bg-1);
  color: var(--tx-0);
  font-size: 16px;
  font-weight: 600;
  padding: 18px 20px;
  line-height: 1.5;
  border-radius: 6px;
  transition: border-color .2s ease-out, background .3s ease-out;
  position: relative;
}

.accordion.accordion-faq .accordion-title:hover,
.accordion.accordion-faq .accordion-title.is-active {
  border-color: var(--line-2);
  color: var(--tx-0);
}

.accordion.accordion-faq .accordion-title::before {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  flex: 0 0 26px;
  border: 1px solid var(--line-2);
  border-radius: 50%;
  font-size: 16px;
  font-weight: 400;
  color: var(--brand-2);
}

.accordion.accordion-faq .accordion-title.is-active::before {
  content: "−";
  color: #fff;
  border-color: var(--brand-1);
  background: var(--brand-1);
}

.accordion.accordion-faq .faq-num {
  color: var(--brand-1);
  font-size: 13px;
  font-weight: 700;
  margin-right: 2px;
  font-variant-numeric: tabular-nums;
}

.accordion.accordion-faq .accordion-content {
  border: 1px solid var(--line-1);
  border-top: 0;
  background: rgba(23, 27, 38, .7);
  color: var(--tx-1);
  padding: 20px 24px 22px;
  font-size: 15px;
  line-height: 1.8;
  border-radius: 0 0 6px 6px;
}

/* 底部 CTA */
.bottom-cta {
  background: var(--bg-0);
  border-top: 1px solid var(--line-1);
  padding: clamp(48px, 6vw, 80px) 0;
}

.cta-strip {
  border: 1px solid var(--line-1);
  background: linear-gradient(105deg, var(--bg-1), #181c29);
  padding: clamp(46px, 5vw, 76px) clamp(24px, 5vw, 64px);
  border-radius: 12px;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) auto;
  gap: 36px;
  align-items: center;
}

.cta-strip h2 {
  font-size: clamp(24px, 3vw, 42px);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.2;
  color: var(--tx-0);
}

.cta-strip h2 em {
  font-style: normal;
  color: var(--brand-1);
}

.cta-strip p {
  margin-top: 12px;
  color: var(--tx-1);
  font-size: 15px;
  max-width: 560px;
}

.cta-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
}

/* 页脚 */
.site-footer {
  background: var(--bg-1);
  border-top: 1px solid var(--line-1);
  padding: clamp(44px, 6vw, 70px) 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, .8fr) minmax(0, .9fr) minmax(0, .8fr);
  gap: clamp(28px, 4vw, 48px);
}

.footer-brand {
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  font-size: 24px;
  font-weight: 800;
  color: var(--tx-0);
  margin-bottom: 10px;
}

.footer-brand em {
  font-style: normal;
  color: var(--brand-1);
}

.footer-desc {
  color: var(--tx-2);
  font-size: 13px;
  line-height: 1.8;
  max-width: 360px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--tx-0);
  letter-spacing: .02em;
}

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

.footer-col ul a,
.footer-col .footer-status a {
  color: var(--tx-2);
  font-size: 13px;
}

.footer-col ul a:hover,
.footer-col .footer-status a:hover {
  color: var(--brand-2);
}

.footer-status {
  color: var(--tx-2);
  font-size: 13px;
  line-height: 1.9;
}

.footer-status strong {
  color: var(--tx-1);
  font-weight: 600;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--line-1);
  margin-top: 44px;
  padding-top: 18px;
  flex-wrap: wrap;
}

.legal {
  font-size: 12px;
  color: var(--tx-2);
  letter-spacing: .02em;
}

/* 响应式 */
@media (max-width: 64em) {
  .brief-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cat-cover-col {
    padding-top: 8px;
    margin-top: 4px;
  }

  .update-card {
    max-width: 260px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .topbar-links a {
    padding: 0 8px;
  }

  .topbar-status {
    max-width: 55vw;
  }
}

@media (max-width: 40em) {
  .cat-hero {
    min-height: 0;
  }

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

  .cat-hero-bg::after {
    height: 80px;
  }

  .cat-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }

  .quickstat {
    padding-left: 10px;
    padding-right: 8px;
  }

  .quickstat .q-num {
    font-size: 22px;
  }

  .filterbar {
    flex-direction: column;
    gap: 16px;
  }

  .filter-tags {
    width: 100%;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 6px;
  }

  .filter-tag {
    flex: 0 0 auto;
  }

  .filter-tags::-webkit-scrollbar {
    height: 4px;
  }

  .filter-title {
    display: none;
  }

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

  .cat-aside {
    padding-left: 0;
    margin-top: 36px;
  }

  .cta-strip {
    grid-template-columns: 1fr;
    text-align: left;
    padding: 32px 22px;
  }

  .cta-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }

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

  .footer-bottom {
    flex-direction: column;
  }

  .update-card {
    max-width: 100%;
    margin: 0;
  }

  .topbar-links a {
    min-height: 36px;
    padding: 0 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}