/* roulang page: index */
:root{
  --brand-600:#0F5A78;
  --brand-700:#0B4660;
  --brand-500:#12718F;
  --brand-50:#EAF3F7;
  --brand-100:#D3E6EE;
  --accent-500:#E07B39;
  --accent-50:#FDF1E7;
  --bg-base:#F6F9FB;
  --surface:#FFFFFF;
  --deep:#0B2B38;
  --ink-900:#10202A;
  --ink-600:#55666F;
  --ink-400:#8A99A3;
  --line-200:#E4ECF1;
  --line-100:#EEF3F6;
  --ok:#1F9D6B;
  --bad:#C24A3F;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(16,32,42,.06);
  --shadow-card:0 8px 24px rgba(15,90,120,.08);
  --shadow-hover:0 14px 34px rgba(15,90,120,.14);
  --section-y:56px;
}
@media (min-width:768px){ :root{ --section-y:72px; } }
@media (min-width:1024px){ :root{ --section-y:104px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-900);
  background:var(--bg-base);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; transition:color .2s ease, background-color .2s ease, border-color .2s ease; }
button,input,select,textarea{ font:inherit; color:inherit; }
h1,h2,h3,h4,p,ul,ol,figure{ margin:0; }
ul,ol{ padding:0; list-style:none; }
:focus-visible{ outline:2px solid var(--brand-600); outline-offset:2px; border-radius:4px; }
[id]{ scroll-margin-top:80px; }
::selection{ background:var(--brand-100); color:var(--brand-700); }
::-webkit-scrollbar{ width:10px; height:10px; }
::-webkit-scrollbar-track{ background:var(--line-100); }
::-webkit-scrollbar-thumb{ background:#C6D7E0; border-radius:999px; border:2px solid var(--line-100); }
::-webkit-scrollbar-thumb:hover{ background:var(--brand-100); }

.container{ width:100%; max-width:1180px; margin:0 auto; padding-left:20px; padding-right:20px; }
@media (min-width:1024px){ .container{ padding-left:32px; padding-right:32px; } }
.section{ padding-top:var(--section-y); padding-bottom:var(--section-y); }
.section-tight{ padding-top:calc(var(--section-y) * .6); padding-bottom:calc(var(--section-y) * .6); }

h1{ font-size:clamp(28px,4vw,42px); font-weight:700; line-height:1.25; letter-spacing:-0.01em; }
h2{ font-size:clamp(22px,2.6vw,30px); font-weight:700; line-height:1.35; letter-spacing:-0.01em; }
h3{ font-size:19px; font-weight:600; line-height:1.5; }
.num{ font-variant-numeric:tabular-nums; }

.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-size:13px; font-weight:600; letter-spacing:.08em;
  color:var(--brand-600); text-transform:uppercase;
}
.eyebrow::before{ content:""; width:22px; height:2px; background:var(--accent-500); display:block; }
.section-head{ display:flex; flex-wrap:wrap; align-items:flex-end; justify-content:space-between; gap:20px; margin-bottom:36px; }
.section-head p.lead{ color:var(--ink-600); font-size:15px; max-width:640px; margin-top:10px; }
.grid-lines{
  background-image:linear-gradient(var(--line-100) 1px, transparent 1px), linear-gradient(90deg, var(--line-100) 1px, transparent 1px);
  background-size:56px 56px;
}

/* Header */
.site-header{
  position:sticky; top:0; z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(150%) blur(6px);
  border-bottom:1px solid var(--line-200);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{ box-shadow:var(--shadow-card); }
.nav-wrap{ display:flex; align-items:center; justify-content:space-between; height:56px; gap:16px; }
@media (min-width:1024px){ .nav-wrap{ height:64px; } }
.brand{ display:flex; align-items:center; gap:10px; }
.brand-mark{
  width:28px; height:28px; border-radius:8px; background:var(--brand-600); color:#fff;
  display:flex; align-items:center; justify-content:center; font-size:15px; font-weight:700; flex:none;
}
.brand-text{ font-size:18px; font-weight:700; color:var(--ink-900); letter-spacing:-0.01em; }
.nav-main{ display:none; align-items:center; gap:30px; }
@media (min-width:1024px){ .nav-main{ display:flex; } }
.nav-link{
  position:relative; font-size:15px; font-weight:500; color:var(--ink-600); padding:6px 0;
}
.nav-link::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px; height:2px; background:var(--brand-600);
  transform:scaleX(0); transform-origin:left; transition:transform .2s ease;
}
.nav-link:hover{ color:var(--brand-600); }
.nav-link:hover::after{ transform:scaleX(1); }
.nav-link.active{ color:var(--brand-700); font-weight:600; }
.nav-link.active::after{ transform:scaleX(1); }
.nav-right{ display:flex; align-items:center; gap:12px; }
.nav-toggle{
  width:44px; height:44px; border:1px solid var(--line-200); background:#fff; border-radius:var(--r-btn);
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:5px; cursor:pointer;
}
@media (min-width:1024px){ .nav-toggle{ display:none; } }
.nav-toggle span{ width:20px; height:2px; background:var(--brand-700); border-radius:2px; transition:transform .2s ease, opacity .2s ease; }
.nav-toggle.is-open span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2){ opacity:0; }
.nav-toggle.is-open span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }
.mobile-drawer{
  overflow:hidden; max-height:0; opacity:0; transform:translateY(-6px);
  transition:max-height .28s ease, opacity .24s ease, transform .24s ease;
  border-top:0 solid var(--line-200); background:#fff;
}
.mobile-drawer.is-open{ max-height:420px; opacity:1; transform:translateY(0); border-top:1px solid var(--line-200); }
@media (min-width:1024px){ .mobile-drawer{ display:none; } }
.mobile-drawer a.m-row{
  display:flex; align-items:center; justify-content:space-between; height:48px; padding:0 20px;
  font-size:15px; color:var(--ink-600); border-bottom:1px solid var(--line-100);
}
.mobile-drawer a.m-row:hover{ color:var(--brand-600); background:var(--brand-50); }
.mobile-drawer a.m-row.active{ color:var(--brand-700); font-weight:600; }
.mobile-cta{ padding:16px 20px 20px; }

/* Buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:44px; padding:0 22px; border-radius:var(--r-btn); font-size:15px; font-weight:600;
  border:1px solid transparent; cursor:pointer; white-space:nowrap;
  transition:background-color .2s ease, color .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.btn-primary{ background:var(--brand-600); color:#fff; }
.btn-primary:hover{ background:var(--brand-700); transform:translateY(-1px); box-shadow:var(--shadow-hover); }
.btn-primary:active{ transform:translateY(0); box-shadow:var(--shadow-sm); }
.btn-ghost{ background:#fff; color:var(--brand-700); border-color:var(--brand-100); }
.btn-ghost:hover{ background:var(--brand-50); }
.btn-light{ background:#fff; color:var(--deep); }
.btn-light:hover{ background:var(--brand-50); transform:translateY(-1px); }
.btn-sm{ height:38px; padding:0 16px; font-size:14px; }
.btn-block{ width:100%; }

/* Badges */
.badge{
  display:inline-flex; align-items:center; gap:6px; padding:3px 12px; border-radius:var(--r-pill);
  font-size:12px; font-weight:600; background:var(--brand-50); color:var(--brand-700); line-height:1.7;
}
.badge-accent{ background:var(--accent-50); color:var(--accent-500); }
.badge-ok{ background:#E8F6F0; color:var(--ok); }

/* Cards */
.card{
  background:var(--surface); border:1px solid var(--line-200); border-radius:var(--r-card);
  box-shadow:var(--shadow-sm); transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover{ transform:translateY(-2px); box-shadow:var(--shadow-hover); border-color:var(--brand-100); }
.card-pad{ padding:26px; }

/* Hero */
.hero{
  position:relative; overflow:hidden;
  background-image:linear-gradient(180deg, rgba(255,255,255,.93), rgba(246,249,251,.95)), url('/assets/images/backpic/back-1.webp');
  background-size:cover; background-position:center;
  border-bottom:1px solid var(--line-200);
}
.hero-grid{ display:grid; grid-template-columns:1fr; gap:40px; padding:56px 0 64px; }
@media (min-width:1024px){
  .hero-grid{ grid-template-columns:1.15fr .85fr; gap:56px; align-items:center; padding:84px 0 88px; }
}
.hero h1{ margin:18px 0 16px; }
.hero-sub{ font-size:17px; color:var(--ink-600); max-width:520px; }
.hero-actions{ display:flex; flex-wrap:wrap; gap:12px; margin-top:30px; }
.hero-notes{ display:flex; flex-wrap:wrap; gap:18px; margin-top:26px; font-size:13px; color:var(--ink-400); }
.hero-notes span{ display:inline-flex; align-items:center; gap:6px; }
.hero-notes span::before{ content:""; width:6px; height:6px; border-radius:50%; background:var(--accent-500); }
.hero-side{ display:flex; flex-direction:column; gap:14px; }
.metric-card{
  background:#fff; border:1px solid var(--line-200); border-radius:var(--r-card); padding:20px 22px;
  box-shadow:var(--shadow-card); display:flex; align-items:flex-start; justify-content:space-between; gap:16px;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.metric-card:hover{ transform:translateY(-2px); box-shadow:var(--shadow-hover); border-color:var(--brand-100); }
.metric-value{ font-size:clamp(30px,4vw,40px); font-weight:700; line-height:1.1; color:var(--brand-700); }
.metric-label{ font-size:14px; color:var(--ink-600); margin-top:6px; }
.metric-chip{ font-size:12px; font-weight:600; color:var(--ok); background:#E8F6F0; border-radius:var(--r-pill); padding:2px 10px; }
.metric-chip.warn{ color:var(--accent-500); background:var(--accent-50); }

/* Stat board */
.stat-card{
  position:relative; background:#fff; border:1px solid var(--line-200); border-radius:var(--r-card);
  padding:24px 22px 34px; box-shadow:var(--shadow-sm);
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease; height:100%;
}
.stat-card:hover{ transform:translateY(-2px); box-shadow:var(--shadow-hover); border-color:var(--brand-100); }
.stat-num{ font-size:clamp(34px,5vw,46px); font-weight:700; line-height:1.05; color:var(--ink-900); }
.stat-num em{ font-style:normal; font-size:16px; font-weight:600; color:var(--ink-600); margin-left:4px; }
.stat-desc{ font-size:13px; color:var(--ink-400); margin-top:10px; }
.stat-bar{ position:absolute; left:22px; right:22px; bottom:16px; height:3px; border-radius:999px; background:var(--line-100); overflow:hidden; }
.stat-bar i{ display:block; height:100%; background:var(--accent-500); border-radius:999px; }

/* Service matrix */
.matrix{ display:grid; grid-template-columns:1fr; gap:24px; }
@media (min-width:1024px){ .matrix{ grid-template-columns:1fr 1fr; } }
.matrix-main{ background:#fff; border:1px solid var(--line-200); border-radius:var(--r-card); overflow:hidden; box-shadow:var(--shadow-card); display:flex; flex-direction:column; }
.matrix-main:hover{ border-color:var(--brand-100); }
.matrix-main .img-wrap{ aspect-ratio:16/9; overflow:hidden; border-radius:0; }
.matrix-main .img-wrap img{ width:100%; height:100%; object-fit:cover; transition:transform .35s ease; }
.matrix-main:hover .img-wrap img{ transform:scale(1.03); }
.matrix-main .body{ padding:28px; }
.index-no{ font-family:ui-monospace,SFMono-Regular,Menlo,monospace; font-size:13px; font-weight:700; color:var(--brand-600); letter-spacing:.08em; }
.matrix-mini-grid{ display:grid; grid-template-columns:1fr; gap:24px; }
@media (min-width:640px){ .matrix-mini-grid{ grid-template-columns:1fr 1fr; } }
.mini-card{ background:#fff; border:1px solid var(--line-200); border-radius:var(--r-card); padding:24px; box-shadow:var(--shadow-sm); transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.mini-card:hover{ transform:translateY(-2px); box-shadow:var(--shadow-hover); border-color:var(--brand-100); }
.mini-card p{ font-size:14px; color:var(--ink-600); margin-top:10px; }
.arrow-link{ display:inline-flex; align-items:center; gap:6px; font-size:14px; font-weight:600; color:var(--brand-600); margin-top:16px; }
.arrow-link:hover{ color:var(--brand-700); }
.arrow-link svg{ transition:transform .2s ease; }
.arrow-link:hover svg{ transform:translateX(3px); }

/* Compare */
.compare{ background:#fff; border:1px solid var(--line-200); border-radius:var(--r-card); padding:28px; box-shadow:var(--shadow-sm); }
.compare-row{ padding:20px 0; border-bottom:1px solid var(--line-100); }
.compare-row:last-child{ border-bottom:0; padding-bottom:4px; }
.compare-item{ font-size:14px; font-weight:600; color:var(--ink-900); margin-bottom:12px; }
.compare-pair{ display:grid; grid-template-columns:1fr; gap:12px; }
@media (min-width:768px){ .compare-pair{ grid-template-columns:1fr 1fr; gap:24px; } }
.compare-lane{ font-size:13px; color:var(--ink-600); }
.compare-lane .lane-title{ display:flex; justify-content:space-between; margin-bottom:6px; }
.track{ height:8px; border-radius:999px; background:var(--line-100); overflow:hidden; }
.track i{ display:block; height:100%; border-radius:999px; background:#CFDCE4; }
.track.track-brand i{ background:var(--brand-600); }
.delta{ font-size:12px; font-weight:600; color:var(--accent-500); background:var(--accent-50); padding:2px 10px; border-radius:var(--r-pill); }
.legend{ display:flex; gap:18px; font-size:13px; color:var(--ink-400); margin-bottom:8px; }
.legend span{ display:inline-flex; align-items:center; gap:6px; }
.swatch{ width:10px; height:10px; border-radius:3px; display:inline-block; }

/* News list */
.filter-pills{ display:flex; flex-wrap:wrap; gap:10px; }
.pill{
  padding:6px 16px; border-radius:var(--r-pill); border:1px solid var(--line-200); background:#fff;
  font-size:13px; color:var(--ink-600); cursor:pointer; transition:all .2s ease;
}
.pill:hover{ border-color:var(--brand-100); color:var(--brand-600); background:var(--brand-50); }
.pill.active{ background:var(--brand-600); border-color:var(--brand-600); color:#fff; }
.news-grid{ display:grid; grid-template-columns:1fr; gap:24px; }
@media (min-width:768px){ .news-grid{ grid-template-columns:1fr 1fr; } }
@media (min-width:1024px){ .news-grid{ grid-template-columns:repeat(3,1fr); } }
.news-card{
  display:flex; flex-direction:column; background:#fff; border:1px solid var(--line-200); border-radius:var(--r-card);
  overflow:hidden; box-shadow:var(--shadow-sm); height:100%;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.news-card:hover{ transform:translateY(-2px); box-shadow:var(--shadow-hover); border-color:var(--brand-100); }
.news-cover{ aspect-ratio:16/9; overflow:hidden; border-radius:var(--r-img); margin:0; background:var(--brand-50); }
.news-cover img{ width:100%; height:100%; object-fit:cover; transition:transform .35s ease; }
.news-card:hover .news-cover img{ transform:scale(1.03); }
.news-body{ padding:20px 22px 22px; display:flex; flex-direction:column; gap:12px; flex:1; }
.news-title{
  font-size:17px; font-weight:600; line-height:1.5; color:var(--ink-900);
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.news-desc{
  font-size:14px; color:var(--ink-600); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.news-meta{ display:flex; align-items:center; gap:8px; font-size:13px; color:var(--ink-400); margin-top:auto; }
.dot-sep{ width:4px; height:4px; border-radius:50%; background:var(--line-200); }
.empty-state{
  grid-column:1 / -1; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:16px;
  padding:56px 24px; text-align:center; background:#fff; border:1px dashed var(--line-200); border-radius:var(--r-card);
}
.empty-state p{ color:var(--ink-600); font-size:15px; }

/* Proof */
.proof-grid{ display:grid; grid-template-columns:1fr; gap:24px; }
@media (min-width:768px){ .proof-grid{ grid-template-columns:repeat(3,1fr); } }
.proof-card{ background:#fff; border:1px solid var(--line-200); border-radius:var(--r-card); padding:26px; box-shadow:var(--shadow-sm); }
.proof-card:hover{ box-shadow:var(--shadow-card); border-color:var(--brand-100); }
.proof-quote{ font-size:15px; color:var(--ink-600); margin-top:14px; }
.proof-person{ display:flex; align-items:center; gap:12px; margin-top:20px; padding-top:18px; border-top:1px solid var(--line-100); }
.avatar{ width:38px; height:38px; border-radius:50%; background:var(--brand-50); color:var(--brand-700); display:flex; align-items:center; justify-content:center; font-weight:700; font-size:14px; }
.proof-person strong{ display:block; font-size:14px; }
.proof-person small{ color:var(--ink-400); font-size:12px; }

/* FAQ */
.faq-list{ display:grid; gap:14px; }
.faq-item{ background:#fff; border:1px solid var(--line-200); border-radius:12px; overflow:hidden; transition:border-color .2s ease, box-shadow .2s ease; }
.faq-item:hover{ border-color:var(--brand-100); }
.faq-item.is-open{ box-shadow:var(--shadow-card); border-color:var(--brand-100); }
.faq-q{
  width:100%; display:flex; align-items:center; justify-content:space-between; gap:16px; text-align:left;
  background:transparent; border:0; padding:18px 22px; font-size:16px; font-weight:600; color:var(--ink-900); cursor:pointer;
}
.faq-item.is-open .faq-q{ color:var(--brand-700); }
.faq-arrow{ flex:none; transition:transform .25s ease; color:var(--brand-600); }
.faq-item.is-open .faq-arrow{ transform:rotate(180deg); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .3s ease; }
.faq-a-inner{ padding:0 22px 20px; color:var(--ink-600); font-size:15px; line-height:1.8; }

/* CTA form */
.cta-band{
  background:var(--deep); border-radius:var(--r-card); padding:40px 28px; color:#fff;
  display:grid; grid-template-columns:1fr; gap:32px;
}
@media (min-width:1024px){ .cta-band{ grid-template-columns:1fr 1fr; padding:52px 48px; gap:48px; align-items:start; } }
.cta-band h2{ color:#fff; }
.cta-band p{ color:#B7CBD4; margin-top:14px; }
.cta-points{ display:grid; gap:12px; margin-top:24px; }
.cta-points li{ display:flex; align-items:center; gap:10px; font-size:14px; color:#D6E3E9; }
.cta-points li::before{ content:""; width:6px; height:6px; border-radius:50%; background:var(--accent-500); flex:none; }
.form-card{ background:#fff; border-radius:var(--r-card); padding:28px; color:var(--ink-900); }
.field{ margin-bottom:16px; }
.field label{ display:block; font-size:14px; color:var(--ink-600); margin-bottom:6px; }
.field input,.field select,.field textarea{
  width:100%; height:44px; padding:0 14px; border:1px solid var(--line-200); border-radius:var(--r-btn);
  background:#fff; font-size:15px; transition:border-color .2s ease, box-shadow .2s ease;
}
.field textarea{ height:96px; padding:12px 14px; resize:vertical; line-height:1.7; }
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none; border-color:var(--brand-600); box-shadow:0 0 0 3px rgba(15,90,120,.12);
}
.check-row{ display:flex; align-items:flex-start; gap:10px; font-size:13px; color:var(--ink-600); margin:6px 0 18px; }
.check-row input{ width:16px; height:16px; margin-top:3px; accent-color:var(--brand-600); }
.form-tip{ margin-top:14px; font-size:13px; color:var(--ok); display:none; }
.form-tip.show{ display:block; }

/* Breadcrumb */
.breadcrumb{ display:flex; flex-wrap:wrap; align-items:center; gap:8px; font-size:13px; color:var(--ink-400); }
.breadcrumb a{ color:var(--brand-700); }
.breadcrumb a:hover{ text-decoration:underline; }

/* Footer */
.site-footer{ background:var(--deep); color:#B7CBD4; margin-top:0; }
.footer-grid{ display:grid; grid-template-columns:1fr; gap:32px; padding:56px 0 36px; }
@media (min-width:768px){ .footer-grid{ grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:36px; } }
.footer-brand{ display:flex; align-items:center; gap:10px; color:#fff; font-size:18px; font-weight:700; }
.footer-brand .brand-mark{ background:#fff; color:var(--deep); }
.site-footer p{ font-size:14px; line-height:1.8; margin-top:16px; color:#9FB6C0; }
.footer-title{ color:#fff; font-size:15px; font-weight:600; margin-bottom:16px; }
.footer-links{ display:grid; gap:10px; }
.footer-links a{ font-size:14px; color:#B7CBD4; }
.footer-links a:hover{ color:#fff; text-decoration:underline; }
.footer-contact{ display:grid; gap:10px; font-size:14px; }
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12); padding:20px 0 28px; display:flex; flex-wrap:wrap;
  justify-content:space-between; gap:12px; font-size:13px; color:#8FA7B2;
}

/* roulang page: category1 */
:root {
    --brand-600: #0F5A78;
    --brand-700: #0B4660;
    --brand-50: #EAF3F7;
    --brand-100: #D3E6EE;
    --accent-500: #E07B39;
    --accent-50: #FDF1E7;
    --bg-base: #F6F9FB;
    --card: #FFFFFF;
    --dark: #0B2B38;
    --text: #10202A;
    --text-2: #55666F;
    --text-3: #8A99A3;
    --border: #E4ECF1;
    --divider: #EEF3F6;
    --pos: #1F9D6B;
    --neg: #C24A3F;
    --r-card: 16px;
    --r-btn: 10px;
    --r-img: 12px;
    --r-pill: 999px;
    --shadow-sm: 0 1px 2px rgba(16,32,42,.06);
    --shadow-card: 0 8px 24px rgba(15,90,120,.08);
    --shadow-hover: 0 14px 34px rgba(15,90,120,.14);
    --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  }

  * { box-sizing: border-box; }

  html { scroll-behavior: smooth; }

  body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.85;
    color: var(--text);
    background: var(--bg-base);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  img { max-width: 100%; display: block; }

  a { color: inherit; text-decoration: none; }

  button { font-family: inherit; cursor: pointer; }

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

  h1, h2, h3, h4, p { margin: 0; }

  ul { margin: 0; padding: 0; list-style: none; }

  :focus-visible {
    outline: 2px solid var(--brand-600);
    outline-offset: 2px;
    border-radius: 4px;
  }

  ::selection { background: var(--brand-100); color: var(--brand-700); }

  ::-webkit-scrollbar { width: 10px; height: 10px; }
  ::-webkit-scrollbar-track { background: var(--divider); }
  ::-webkit-scrollbar-thumb { background: #C6D6DE; border-radius: 999px; }
  ::-webkit-scrollbar-thumb:hover { background: #A9BEC9; }

  [id] { scroll-margin-top: 80px; }

  .container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
  }

  /* ============ 按钮 ============ */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 22px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--r-btn);
    border: 1px solid transparent;
    transition: background-color .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    white-space: nowrap;
  }

  .btn-primary {
    background: var(--brand-600);
    color: #fff;
    box-shadow: var(--shadow-sm);
  }
  .btn-primary:hover {
    background: var(--brand-700);
    transform: translateY(-1px);
    box-shadow: var(--shadow-hover);
  }
  .btn-primary:active { transform: translateY(0); }

  .btn-ghost {
    background: #fff;
    color: var(--brand-700);
    border-color: var(--brand-100);
  }
  .btn-ghost:hover { background: var(--brand-50); }

  .btn-sm { height: 40px; padding: 0 18px; font-size: 14px; }
  .btn-block { width: 100%; }

  /* ============ 标签 / 徽章 ============ */
  .pill {
    display: inline-flex;
    align-items: center;
    height: 26px;
    padding: 0 12px;
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--r-pill);
    background: var(--brand-50);
    color: var(--brand-700);
    letter-spacing: .02em;
  }
  .pill-accent { background: var(--accent-50); color: var(--accent-500); }

  .badge-up {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    height: 22px;
    padding: 0 8px;
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--r-pill);
    background: rgba(31,157,107,.1);
    color: var(--pos);
    font-variant-numeric: tabular-nums;
  }

  /* ============ 头部导航 ============ */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 60;
    background: #fff;
    border-bottom: 1px solid var(--border);
    transition: box-shadow .25s ease;
  }
  .site-header.is-scrolled { box-shadow: var(--shadow-sm); }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    height: 56px;
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }
  .brand-mark {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: var(--brand-600);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  .brand-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -.01em;
  }

  .nav-main {
    display: none;
    align-items: center;
    gap: 4px;
  }
  .nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    height: 64px;
    padding: 0 14px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-2);
    transition: color .2s ease;
  }
  .nav-link::after {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 16px;
    height: 2px;
    background: var(--brand-600);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform .2s ease;
  }
  .nav-link:hover { color: var(--brand-600); }
  .nav-link:hover::after { transform: scaleX(1); }
  .nav-link.active { color: var(--brand-700); font-weight: 600; }
  .nav-link.active::after { transform: scaleX(1); }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .header-actions .btn-primary { display: none; }

  .nav-toggle {
    width: 44px;
    height: 44px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--r-btn);
  }
  .nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--brand-700);
    border-radius: 2px;
    transition: transform .22s ease, opacity .22s ease;
  }
  .nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
  .nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .mobile-drawer {
    display: block;
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transform: translateY(-8px);
    background: #fff;
    border-top: 0 solid var(--divider);
    transition: max-height .3s ease, opacity .25s ease, transform .25s ease;
  }
  .mobile-drawer.is-open {
    max-height: 340px;
    opacity: 1;
    transform: translateY(0);
    border-top: 1px solid var(--divider);
  }
  .drawer-link {
    display: flex;
    align-items: center;
    height: 48px;
    padding: 0 20px;
    font-size: 15px;
    color: var(--text-2);
    border-bottom: 1px solid var(--divider);
    transition: color .2s ease, background-color .2s ease;
  }
  .drawer-link:hover { color: var(--brand-600); background: var(--brand-50); }
  .drawer-link.active { color: var(--brand-700); font-weight: 600; }
  .drawer-cta-wrap { padding: 14px 20px 18px; }
  .drawer-cta { width: 100%; }

  /* ============ 页头 ============ */
  .page-head {
    background:
      linear-gradient(180deg, rgba(255,255,255,.94) 0%, rgba(234,243,247,.86) 100%),
      url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    border-bottom: 1px solid var(--border);
    padding: 34px 0 46px;
  }
  .page-head-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 26px;
    align-items: center;
  }
  .breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-3);
    margin-bottom: 14px;
  }
  .breadcrumb a { color: var(--brand-700); transition: color .2s ease; }
  .breadcrumb a:hover { color: var(--brand-600); text-decoration: underline; }
  .breadcrumb .sep { color: var(--text-3); }
  .breadcrumb .current { color: var(--text-3); }

  .page-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -.01em;
    color: var(--text);
  }
  .page-lead {
    margin-top: 14px;
    max-width: 620px;
    font-size: 16px;
    color: var(--text-2);
    line-height: 1.85;
  }
  .page-head-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 18px;
  }

  .page-head-media {
    position: relative;
    border-radius: var(--r-img);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
    background: #fff;
  }
  .page-head-media img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
  }
  .media-badge {
    position: absolute;
    left: 14px;
    bottom: 14px;
    display: flex;
    align-items: baseline;
    gap: 8px;
    padding: 8px 14px;
    background: rgba(255,255,255,.95);
    border: 1px solid var(--border);
    border-radius: var(--r-pill);
    box-shadow: var(--shadow-sm);
  }
  .media-badge strong {
    font-size: 18px;
    font-weight: 700;
    color: var(--brand-700);
    font-variant-numeric: tabular-nums;
  }
  .media-badge span { font-size: 12px; color: var(--text-2); }

  /* ============ 板块通用 ============ */
  .section { padding: 56px 0; }
  .section-tight { padding: 44px 0; }
  .section-head { margin-bottom: 28px; }
  .section-title {
    font-size: clamp(22px, 2.6vw, 30px);
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: -.01em;
  }
  .section-sub {
    margin-top: 10px;
    font-size: 15px;
    color: var(--text-2);
    max-width: 700px;
  }
  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--brand-600);
    letter-spacing: .06em;
    margin-bottom: 10px;
  }
  .eyebrow::before {
    content: "";
    width: 18px;
    height: 2px;
    background: var(--brand-600);
    border-radius: 2px;
  }

  /* ============ 指标看板 ============ */
  .kpi-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
  .kpi-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--r-card);
    box-shadow: var(--shadow-card);
    padding: 20px 18px 16px;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  }
  .kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    border-color: var(--brand-100);
  }
  .kpi-label {
    font-size: 13px;
    color: var(--text-3);
    letter-spacing: .02em;
  }
  .kpi-value {
    margin-top: 6px;
    font-size: clamp(34px, 5vw, 44px);
    font-weight: 700;
    line-height: 1.1;
    color: var(--brand-700);
    font-variant-numeric: tabular-nums;
    font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  }
  .kpi-unit {
    font-size: 15px;
    font-weight: 600;
    margin-left: 4px;
    color: var(--text-2);
    font-family: var(--font-sans);
  }
  .kpi-desc {
    margin-top: 8px;
    font-size: 13px;
    color: var(--text-2);
    line-height: 1.7;
  }
  .kpi-bar {
    margin-top: 14px;
    height: 4px;
    border-radius: 999px;
    background: var(--divider);
    overflow: hidden;
  }
  .kpi-bar span {
    display: block;
    height: 100%;
    border-radius: 999px;
    background: var(--accent-500);
  }

  /* ============ 能力矩阵 ============ */
  .matrix-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .matrix-card {
    position: relative;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--r-card);
    box-shadow: var(--shadow-card);
    padding: 22px 20px;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  }
  .matrix-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    border-color: var(--brand-100);
  }
  .matrix-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: var(--brand-50);
    color: var(--brand-700);
    font-size: 14px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    margin-bottom: 14px;
  }
  .matrix-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.5;
  }
  .matrix-card p {
    margin-top: 8px;
    font-size: 14px;
    color: var(--text-2);
    line-height: 1.8;
  }

  /* ============ 对比表 ============ */
  .table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--r-card);
    box-shadow: var(--shadow-card);
  }
  .cmp-table {
    width: 100%;
    min-width: 620px;
    border-collapse: collapse;
    font-size: 15px;
  }
  .cmp-table thead th {
    background: var(--brand-50);
    color: var(--brand-700);
    font-size: 13px;
    font-weight: 600;
    text-align: left;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
  }
  .cmp-table td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--divider);
    color: var(--text-2);
    line-height: 1.75;
    vertical-align: top;
  }
  .cmp-table tbody tr:last-child td { border-bottom: 0; }
  .cmp-table td:first-child {
    color: var(--text);
    font-weight: 600;
    white-space: nowrap;
  }
  .cmp-table .cmp-good { color: var(--brand-700); font-weight: 600; }
  .cmp-table tbody tr:hover { background: #FBFDFE; }

  /* ============ 图文核验区 ============ */
  .verify-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    align-items: center;
  }
  .verify-media {
    border-radius: var(--r-img);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
  }
  .verify-media img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
  }
  .verify-list { margin-top: 20px; display: grid; gap: 12px; }
  .verify-list li {
    position: relative;
    padding-left: 20px;
    font-size: 15px;
    color: var(--text-2);
    line-height: 1.8;
  }
  .verify-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 11px;
    width: 8px;
    height: 8px;
    border-radius: 2px;
    background: var(--brand-600);
  }
  .verify-list strong { color: var(--text); font-weight: 600; }

  /* ============ CTA 长条 ============ */
  .cta-strip {
    background: var(--dark);
    border-radius: var(--r-card);
    padding: 28px 24px;
    color: #fff;
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    align-items: center;
  }
  .cta-strip h2 {
    font-size: clamp(20px, 2.4vw, 26px);
    font-weight: 700;
    line-height: 1.4;
  }
  .cta-strip p {
    margin-top: 10px;
    font-size: 15px;
    color: rgba(255,255,255,.76);
    line-height: 1.8;
  }
  .cta-strip .btn-primary { background: var(--brand-600); }
  .cta-strip .btn-primary:hover { background: #146C8D; }

  /* ============ 页脚 ============ */
  .site-footer {
    margin-top: 64px;
    background: var(--dark);
    color: rgba(255,255,255,.72);
    padding: 52px 0 26px;
    font-size: 14px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 14px;
  }
  .footer-brand .brand-mark { background: #146C8D; }
  .site-footer p { line-height: 1.85; font-size: 14px; }
  .footer-title {
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 14px;
  }
  .footer-links { display: grid; gap: 10px; }
  .footer-links a {
    color: rgba(255,255,255,.72);
    transition: color .2s ease;
  }
  .footer-links a:hover { color: #fff; text-decoration: underline; }
  .footer-contact { display: grid; gap: 10px; }
  .footer-bottom {
    margin-top: 36px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,.14);
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 13px;
    color: rgba(255,255,255,.6);
  }

  /* ============ 响应式 ============ */
  @media (min-width: 640px) {
    .container { padding-left: 24px; padding-right: 24px; }
    .section { padding: 72px 0; }
    .kpi-grid { gap: 20px; }
    .matrix-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
    .cta-strip { padding: 34px 32px; }
    .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px; }
    .footer-bottom { flex-direction: row; justify-content: space-between; align-items: center; }
  }

  @media (min-width: 768px) {
    .page-head { padding: 48px 0 60px; }
    .page-head-grid { grid-template-columns: 1.15fr .85fr; gap: 36px; }
    .kpi-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .verify-grid { grid-template-columns: .9fr 1.1fr; gap: 36px; }
    .cta-strip { grid-template-columns: 1.4fr .6fr; padding: 40px 44px; }
    .cta-strip .cta-action { justify-self: end; }
  }

  @media (min-width: 1024px) {
    .container { padding-left: 32px; padding-right: 32px; }
    .header-inner { height: 64px; }
    .nav-main { display: flex; }
    .header-actions .btn-primary { display: inline-flex; }
    .nav-toggle { display: none; }
    .mobile-drawer { display: none !important; }
    .section { padding: 96px 0; }
    .section-tight { padding: 72px 0; }
    .matrix-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
    .footer-grid { grid-template-columns: 1.4fr .8fr .8fr 1fr; gap: 40px; }
    .site-footer { padding: 64px 0 28px; }
  }

  @media (min-width: 1280px) {
    .container { padding-left: 32px; padding-right: 32px; }
  }

/* roulang page: article */
:root {
    --brand-600: #0F5A78;
    --brand-700: #0B4660;
    --brand-50: #EAF3F7;
    --brand-100: #D3E6EE;
    --accent-500: #E07B39;
    --accent-50: #FDF1E7;
    --bg-base: #F6F9FB;
    --card: #FFFFFF;
    --dark: #0B2B38;
    --text: #10202A;
    --text-2: #55666F;
    --text-3: #8A99A3;
    --border: #E4ECF1;
    --divider: #EEF3F6;
    --pos: #1F9D6B;
    --neg: #C24A3F;
    --radius-card: 16px;
    --radius-btn: 10px;
    --radius-img: 12px;
    --radius-pill: 999px;
    --shadow-sm: 0 1px 2px rgba(16, 32, 42, .06);
    --shadow-card: 0 8px 24px rgba(15, 90, 120, .08);
    --shadow-hover: 0 14px 34px rgba(15, 90, 120, .14);
    --container: 1180px;
    --font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  }

  *, *::before, *::after { box-sizing: border-box; }
  html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
  body {
    margin: 0;
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.85;
    color: var(--text);
    background: var(--bg-base);
  }
  img { max-width: 100%; display: block; }
  a { color: var(--brand-700); text-decoration: none; transition: color .2s ease; }
  a:hover { color: var(--brand-600); }
  button { font-family: inherit; }
  h1, h2, h3, h4 { margin: 0; font-weight: 700; color: var(--text); letter-spacing: -0.01em; }
  p { margin: 0; }
  :focus-visible { outline: 2px solid var(--brand-600); outline-offset: 2px; border-radius: 4px; }
  .num { font-variant-numeric: tabular-nums; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

  .container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }
  @media (min-width: 1024px) { .container { padding: 0 32px; } }

  /* ============ 顶部导航 ============ */
  .site-header {
    position: sticky; top: 0; z-index: 50;
    background: #fff; border-bottom: 1px solid var(--border);
    transition: box-shadow .2s ease;
  }
  .site-header.is-scrolled { box-shadow: 0 4px 18px rgba(15, 90, 120, .08); }
  .header-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 56px; }
  @media (min-width: 900px) { .header-inner { height: 64px; gap: 32px; } }

  .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--text); }
  .brand:hover { color: var(--brand-700); }
  .brand-mark {
    width: 28px; height: 28px; border-radius: 8px; background: var(--brand-600); color: #fff;
    display: grid; place-items: center; font-size: 15px; font-weight: 700; flex: none;
  }
  .brand-name { white-space: nowrap; }

  .nav-main { display: none; align-items: center; gap: 28px; }
  @media (min-width: 900px) { .nav-main { display: flex; } }
  .nav-link {
    position: relative; padding: 6px 0; font-size: 15px; font-weight: 500; color: var(--text-2);
  }
  .nav-link::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
    background: var(--brand-600); transform: scaleX(0); transform-origin: left;
    transition: transform .2s ease;
  }
  .nav-link:hover { color: var(--brand-600); }
  .nav-link:hover::after { transform: scaleX(1); }
  .nav-link.active { color: var(--brand-700); font-weight: 600; }
  .nav-link.active::after { transform: scaleX(1); }

  .header-actions { display: flex; align-items: center; gap: 12px; }
  .nav-toggle {
    display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
    width: 44px; height: 44px; border: 1px solid var(--border); border-radius: var(--radius-btn);
    background: #fff; cursor: pointer; transition: border-color .2s ease, background .2s ease;
  }
  .nav-toggle:hover { border-color: var(--brand-100); background: var(--brand-50); }
  .nav-toggle .bar { width: 18px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .2s ease, opacity .2s ease; }
  .nav-toggle[aria-expanded="true"] .bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .bar:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] .bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  @media (min-width: 900px) { .nav-toggle { display: none; } }

  .mobile-drawer {
    position: fixed; left: 0; right: 0; top: 0; z-index: 40;
    background: #fff; border-bottom: 1px solid var(--border);
    padding: 72px 20px 20px;
    opacity: 0; transform: translateY(-12px); pointer-events: none;
    transition: opacity .22s ease, transform .22s ease;
    box-shadow: var(--shadow-card); max-height: 100vh; overflow-y: auto;
  }
  .mobile-drawer.open { opacity: 1; transform: translateY(0); pointer-events: auto; }
  @media (min-width: 900px) { .mobile-drawer { display: none; } }
  .drawer-link {
    display: flex; align-items: center; height: 48px; font-weight: 600; font-size: 15px;
    color: var(--text); border-bottom: 1px solid var(--divider);
  }
  .drawer-link:hover, .drawer-link.active { color: var(--brand-600); }
  .drawer-cta { margin-top: 16px; }
  .drawer-cta .btn { width: 100%; }

  /* ============ 按钮 ============ */
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    height: 44px; padding: 0 22px; border-radius: var(--radius-btn);
    font-size: 15px; font-weight: 600; line-height: 1; cursor: pointer;
    border: 1px solid transparent; transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
    white-space: nowrap;
  }
  .btn-primary { background: var(--brand-600); color: #fff; }
  .btn-primary:hover { background: var(--brand-700); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-hover); }
  .btn-primary:active { transform: translateY(0); box-shadow: none; }
  .btn-outline { background: #fff; color: var(--brand-700); border-color: var(--brand-100); }
  .btn-outline:hover { background: var(--brand-50); color: var(--brand-700); }
  .btn-light { background: #fff; color: var(--brand-700); }
  .btn-light:hover { background: var(--brand-50); color: var(--brand-700); transform: translateY(-1px); }
  .btn-sm { height: 38px; padding: 0 16px; font-size: 14px; }

  /* ============ 文章主体 ============ */
  .article-page { padding: 24px 0 72px; }
  @media (min-width: 768px) { .article-page { padding: 32px 0 96px; } }

  .breadcrumb {
    display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
    font-size: 13px; color: var(--text-3); margin-bottom: 20px;
  }
  .breadcrumb a { color: var(--brand-700); }
  .breadcrumb .sep { color: #C3D0D8; }
  .breadcrumb .current { color: var(--text-3); max-width: 42ch; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

  .article-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 32px; }
  @media (min-width: 1280px) {
    .article-layout { grid-template-columns: minmax(0, 1fr) 300px; gap: 40px; align-items: start; }
  }

  .article-main { min-width: 0; }
  .article-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-card);
    box-shadow: var(--shadow-card); padding: 24px 20px;
  }
  @media (min-width: 768px) { .article-card { padding: 40px 44px; } }

  .article-header { padding-bottom: 20px; border-bottom: 1px solid var(--divider); margin-bottom: 28px; }
  .badge {
    display: inline-flex; align-items: center; height: 26px; padding: 0 12px;
    border-radius: var(--radius-pill); background: var(--brand-50); color: var(--brand-700);
    font-size: 12px; font-weight: 600; letter-spacing: .01em;
  }
  .badge-accent { background: var(--accent-50); color: var(--accent-500); }
  .article-title {
    font-size: clamp(26px, 3.4vw, 38px); line-height: 1.3; font-weight: 700;
    margin: 16px 0 16px; letter-spacing: -0.01em;
  }
  .article-meta {
    display: flex; align-items: center; flex-wrap: wrap; gap: 10px;
    font-size: 13px; color: var(--text-3);
  }
  .article-meta .dot { width: 4px; height: 4px; border-radius: 50%; background: #C3D0D8; flex: none; }

  /* 正文排版 */
  .article-content { font-size: 17px; line-height: 1.9; color: var(--text); max-width: 820px; }
  .article-content p { margin: 0 0 1.1em; }
  .article-content h2 {
    position: relative; font-size: clamp(20px, 2.4vw, 26px); line-height: 1.4;
    margin: 2em 0 .8em; padding-left: 16px;
  }
  .article-content h2::before {
    content: ""; position: absolute; left: 0; top: .3em; bottom: .3em;
    width: 4px; border-radius: 2px; background: var(--brand-600);
  }
  .article-content h3 { font-size: 18px; font-weight: 700; line-height: 1.5; margin: 1.6em 0 .6em; color: var(--text); }
  .article-content h4 { font-size: 16px; font-weight: 600; margin: 1.3em 0 .5em; }
  .article-content ul, .article-content ol { margin: 0 0 1.1em; padding-left: 1.25em; }
  .article-content li { margin-bottom: .5em; }
  .article-content ul { list-style: none; padding-left: 0; }
  .article-content ul > li { position: relative; padding-left: 20px; }
  .article-content ul > li::before {
    content: ""; position: absolute; left: 2px; top: .78em;
    width: 6px; height: 6px; border-radius: 2px; background: var(--brand-600);
  }
  .article-content ol > li::marker { color: var(--brand-600); font-weight: 600; }
  .article-content blockquote {
    margin: 0 0 1.4em; padding: 16px 20px; border-left: 3px solid var(--brand-600);
    background: var(--brand-50); border-radius: 0 var(--radius-img) var(--radius-img) 0;
    color: var(--text-2);
  }
  .article-content blockquote p:last-child { margin-bottom: 0; }
  .article-content img { border-radius: var(--radius-img); height: auto; }
  .article-content figure { margin: 0 0 1.4em; }
  .article-content figcaption { margin-top: 8px; font-size: 13px; color: var(--text-3); text-align: center; }
  .article-content table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 0 0 1.4em; }
  .article-content th {
    background: var(--brand-50); color: var(--brand-700); text-align: left;
    font-size: 13px; font-weight: 600; padding: 12px 14px; border-bottom: 1px solid var(--brand-100);
  }
  .article-content td { padding: 12px 14px; border-bottom: 1px solid var(--divider); vertical-align: top; }
  .article-content a { color: var(--brand-700); text-decoration: underline; text-underline-offset: 3px; }
  .article-content code {
    background: var(--brand-50); color: var(--brand-700); padding: 2px 6px;
    border-radius: 6px; font-size: 15px;
  }
  .article-content hr { border: 0; border-top: 1px solid var(--divider); margin: 2em 0; }

  /* 空态 */
  .empty-state {
    padding: 56px 20px; text-align: center; border: 1px dashed var(--border);
    border-radius: var(--radius-card); background: #FBFDFE;
  }
  .empty-state svg { width: 40px; height: 40px; margin: 0 auto 14px; stroke: var(--text-3); }
  .empty-state p { font-size: 15px; color: var(--text-2); margin-bottom: 18px; }

  /* 标签行 */
  .tag-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--divider); }
  .tag {
    display: inline-flex; align-items: center; height: 28px; padding: 0 14px;
    border-radius: var(--radius-pill); background: var(--brand-50); color: var(--brand-700);
    font-size: 12px; font-weight: 500; transition: background .2s ease, color .2s ease;
  }
  .tag:hover { background: var(--brand-100); color: var(--brand-700); }

  .back-bar {
    display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 14px;
    margin-top: 28px; padding: 18px 20px; border: 1px solid var(--border);
    border-radius: var(--radius-card); background: var(--brand-50);
  }
  .back-bar span { font-size: 14px; color: var(--text-2); }

  /* 相关推荐 */
  .related { margin-top: 56px; }
  .related-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
  .related-head h2 { font-size: clamp(20px, 2.2vw, 24px); line-height: 1.35; }
  .related-head a { font-size: 14px; font-weight: 600; }
  .related-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
  @media (min-width: 640px) { .related-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
  @media (min-width: 1024px) { .related-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

  .card {
    display: block; background: var(--card); border: 1px solid var(--border);
    border-radius: var(--radius-card); box-shadow: var(--shadow-sm); overflow: hidden;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    color: inherit;
  }
  .card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); border-color: var(--brand-100); color: inherit; }
  .card-cover { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: var(--brand-50); }
  .card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
  .card:hover .card-cover img { transform: scale(1.03); }
  .card-body { padding: 18px 18px 20px; }
  .card-body h3 { font-size: 17px; font-weight: 600; line-height: 1.5; margin: 10px 0 8px; }
  .card-body p { font-size: 14px; line-height: 1.7; color: var(--text-2); }
  .card-foot { display: flex; align-items: center; gap: 8px; margin-top: 14px; font-size: 13px; color: var(--text-3); }
  .card-foot .dot { width: 4px; height: 4px; border-radius: 50%; background: #C3D0D8; }

  /* 侧栏 */
  .article-aside { display: grid; gap: 20px; }
  @media (min-width: 1280px) { .article-aside { position: sticky; top: 88px; } }
  .side-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-card);
    box-shadow: var(--shadow-sm); padding: 20px;
  }
  .side-title {
    font-size: 13px; font-weight: 700; color: var(--text-3); letter-spacing: .08em;
    text-transform: uppercase; padding-bottom: 12px; margin-bottom: 10px; border-bottom: 1px solid var(--divider);
  }
  .side-link {
    display: flex; align-items: center; justify-content: space-between; gap: 10px;
    padding: 10px 0; font-size: 14px; color: var(--text); border-bottom: 1px solid var(--divider);
  }
  .side-link:last-child { border-bottom: 0; }
  .side-link:hover { color: var(--brand-600); }
  .side-link .arrow { color: var(--text-3); transition: transform .2s ease, color .2s ease; }
  .side-link:hover .arrow { transform: translateX(3px); color: var(--brand-600); }
  .side-note { font-size: 13px; line-height: 1.8; color: var(--text-2); }
  .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }

  /* CTA 长条 */
  .cta-band { background: var(--dark); padding: 40px 0; }
  @media (min-width: 768px) { .cta-band { padding: 48px 0; } }
  .cta-inner { display: flex; flex-direction: column; gap: 20px; }
  @media (min-width: 900px) { .cta-inner { flex-direction: row; align-items: center; justify-content: space-between; gap: 32px; } }
  .cta-inner h2 { color: #fff; font-size: clamp(20px, 2.4vw, 26px); line-height: 1.35; margin-bottom: 8px; }
  .cta-inner p { color: rgba(255, 255, 255, .72); font-size: 15px; max-width: 62ch; }
  .cta-actions { display: flex; flex-wrap: wrap; gap: 12px; flex: none; }

  /* ============ 页脚 ============ */
  .site-footer { background: var(--dark); color: rgba(255, 255, 255, .72); padding: 56px 0 28px; }
  .footer-grid { display: grid; grid-template-columns: 1fr; gap: 32px; }
  @media (min-width: 640px) { .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
  @media (min-width: 1024px) { .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; } }
  .footer-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; font-size: 17px; margin-bottom: 14px; }
  .site-footer p { font-size: 14px; line-height: 1.85; max-width: 40ch; }
  .footer-title { color: #fff; font-size: 14px; font-weight: 700; margin-bottom: 14px; }
  .footer-links { display: flex; flex-direction: column; gap: 10px; }
  .footer-links a { color: rgba(255, 255, 255, .72); font-size: 14px; width: fit-content; }
  .footer-links a:hover { color: #fff; text-decoration: underline; text-underline-offset: 3px; }
  .footer-contact { display: flex; flex-direction: column; gap: 10px; font-size: 14px; }
  .footer-bottom {
    display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
    margin-top: 40px; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, .12);
    font-size: 13px; color: rgba(255, 255, 255, .56);
  }

  @media (max-width: 639px) {
    .article-card { padding: 20px 16px; }
    .article-title { margin: 12px 0 12px; }
  }

/* roulang page: category2 */
:root {
    --brand-600: #0F5A78;
    --brand-700: #0B4660;
    --brand-50: #EAF3F7;
    --brand-100: #D3E6EE;
    --accent-500: #E07B39;
    --accent-50: #FDF1E7;
    --bg-base: #F6F9FB;
    --card: #FFFFFF;
    --dark: #0B2B38;
    --text: #10202A;
    --muted: #55666F;
    --weak: #8A99A3;
    --border: #E4ECF1;
    --divider: #EEF3F6;
    --pos: #1F9D6B;
    --neg: #C24A3F;
    --radius-card: 16px;
    --radius-btn: 10px;
    --radius-img: 12px;
    --shadow-sm: 0 1px 2px rgba(16, 32, 42, .06);
    --shadow-card: 0 8px 24px rgba(15, 90, 120, .08);
    --shadow-hover: 0 14px 34px rgba(15, 90, 120, .14);
    --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  }

  * { box-sizing: border-box; }

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

  body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.85;
    color: var(--text);
    background: var(--bg-base);
    -webkit-font-smoothing: antialiased;
  }

  img { max-width: 100%; display: block; }

  a { color: inherit; text-decoration: none; }

  button { font-family: inherit; cursor: pointer; }

  h1, h2, h3, h4 { margin: 0; font-weight: 700; color: var(--text); }

  h1 {
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.25;
    letter-spacing: -0.01em;
  }

  h2 {
    font-size: clamp(22px, 2.6vw, 30px);
    line-height: 1.35;
  }

  h3 { font-size: 19px; font-weight: 600; line-height: 1.5; }

  p { margin: 0 0 0.9em; color: var(--muted); }

  ul { margin: 0; padding: 0; list-style: none; }

  :focus-visible {
    outline: 2px solid var(--brand-600);
    outline-offset: 2px;
    border-radius: 6px;
  }

  ::selection { background: var(--brand-100); color: var(--brand-700); }

  .container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
  }

  @media (min-width: 1024px) {
    .container { padding-left: 32px; padding-right: 32px; }
  }

  .section { padding-top: 56px; padding-bottom: 56px; }
  @media (min-width: 768px) {
    .section { padding-top: 72px; padding-bottom: 72px; }
  }
  @media (min-width: 1024px) {
    .section { padding-top: 96px; padding-bottom: 96px; }
  }

  .section-head { margin-bottom: 32px; }
  .section-head .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .06em;
    color: var(--brand-700);
    background: var(--brand-50);
    border: 1px solid var(--brand-100);
    border-radius: 999px;
    padding: 4px 12px;
    margin-bottom: 14px;
  }
  .section-head h2 { margin-bottom: 10px; }
  .section-head p { max-width: 720px; margin-bottom: 0; }

  /* ===== 顶部导航 ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 60;
    background: rgba(255, 255, 255, .96);
    border-bottom: 1px solid var(--border);
    transition: box-shadow .25s ease;
  }
  .site-header.is-scrolled { box-shadow: var(--shadow-card); }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    height: 56px;
  }
  @media (min-width: 1024px) {
    .header-inner { height: 64px; }
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }
  .brand-mark {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: var(--brand-600);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  .brand-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.01em;
    white-space: nowrap;
  }

  .nav-main { display: none; align-items: center; gap: 30px; }
  @media (min-width: 1024px) {
    .nav-main { display: flex; }
  }
  .nav-link {
    position: relative;
    font-size: 15px;
    color: var(--muted);
    padding: 6px 0;
    transition: color .2s ease;
  }
  .nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px;
    background: var(--brand-600);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform .2s ease;
  }
  .nav-link:hover { color: var(--brand-600); }
  .nav-link:hover::after { transform: scaleX(1); }
  .nav-link.active { color: var(--brand-700); font-weight: 600; }
  .nav-link.active::after { transform: scaleX(1); }

  .header-actions { display: flex; align-items: center; gap: 12px; }

  .nav-toggle {
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: var(--radius-btn);
    background: #fff;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: border-color .2s ease, background .2s ease;
  }
  .nav-toggle:hover { border-color: var(--brand-100); background: var(--brand-50); }
  .nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--brand-700);
    border-radius: 2px;
    transition: transform .25s ease, opacity .25s ease;
  }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  @media (min-width: 1024px) {
    .nav-toggle { display: none; }
  }

  .mobile-drawer {
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transform: translateY(-8px);
    transition: max-height .3s ease, opacity .25s ease, transform .25s ease;
    border-top: 1px solid transparent;
    background: #fff;
  }
  .mobile-drawer.open {
    max-height: 420px;
    opacity: 1;
    transform: translateY(0);
    border-top-color: var(--divider);
  }
  @media (min-width: 1024px) {
    .mobile-drawer { display: none; }
  }
  .drawer-inner { padding: 8px 20px 20px; }
  .drawer-link {
    display: flex;
    align-items: center;
    height: 48px;
    font-size: 15px;
    color: var(--muted);
    border-bottom: 1px solid var(--divider);
    transition: color .2s ease;
  }
  .drawer-link:hover { color: var(--brand-600); }
  .drawer-link.active { color: var(--brand-700); font-weight: 600; }
  .drawer-cta { width: 100%; margin-top: 16px; }

  /* ===== 按钮 ===== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 20px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    border: 1px solid transparent;
    transition: background .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    white-space: nowrap;
  }
  .btn-sm { height: 38px; padding: 0 16px; font-size: 14px; }
  .btn-primary { background: var(--brand-600); color: #fff; }
  .btn-primary:hover { background: var(--brand-700); transform: translateY(-1px); box-shadow: var(--shadow-hover); }
  .btn-primary:active { transform: translateY(0); box-shadow: none; }
  .btn-ghost {
    background: #fff;
    color: var(--brand-700);
    border-color: var(--brand-100);
  }
  .btn-ghost:hover { background: var(--brand-50); }
  .btn-onDark {
    background: #fff;
    color: var(--brand-700);
    border-color: #fff;
  }
  .btn-onDark:hover { background: var(--brand-50); transform: translateY(-1px); }

  .link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--brand-700);
    transition: gap .2s ease, color .2s ease;
  }
  .link-arrow:hover { gap: 10px; color: var(--brand-600); }

  /* ===== 徽章 / 标签 ===== */
  .badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    background: var(--brand-50);
    color: var(--brand-700);
    border: 1px solid var(--brand-100);
    white-space: nowrap;
  }
  .badge-accent {
    background: var(--accent-50);
    color: var(--accent-500);
    border-color: #F5D9C2;
  }

  /* ===== 内页页头 ===== */
  .page-hero {
    position: relative;
    overflow: hidden;
    background: var(--bg-base);
    border-bottom: 1px solid var(--border);
  }
  .page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center;
    opacity: .55;
  }
  .page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, .90), rgba(246, 249, 251, .88));
  }
  .page-hero-inner {
    position: relative;
    z-index: 1;
    padding-top: 36px;
    padding-bottom: 44px;
    display: grid;
    gap: 28px;
  }
  @media (min-width: 1024px) {
    .page-hero-inner {
      padding-top: 52px;
      padding-bottom: 60px;
      grid-template-columns: 1.55fr 1fr;
      gap: 48px;
      align-items: center;
    }
  }
  .breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: var(--weak);
    margin-bottom: 16px;
  }
  .breadcrumb a { color: var(--brand-700); transition: color .2s ease; }
  .breadcrumb a:hover { color: var(--brand-600); }
  .breadcrumb .sep { color: var(--weak); }
  .page-hero h1 { margin-bottom: 16px; }
  .page-hero .lede {
    font-size: 16px;
    max-width: 560px;
    color: var(--muted);
    margin-bottom: 24px;
  }
  .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

  .hero-facts {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 22px;
  }
  .hero-facts h2 {
    font-size: 15px;
    font-weight: 600;
    color: var(--muted);
    margin-bottom: 16px;
    letter-spacing: .02em;
  }
  .fact-row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--divider);
  }
  .fact-row:last-child { border-bottom: 0; padding-bottom: 0; }
  .fact-num {
    font-size: 24px;
    font-weight: 700;
    color: var(--brand-700);
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
  }
  .fact-label { font-size: 13px; color: var(--muted); }

  /* ===== 侧栏锚点 + 内容流 ===== */
  .layout-side { display: grid; gap: 40px; align-items: start; }
  @media (min-width: 1024px) {
    .layout-side { grid-template-columns: 236px minmax(0, 1fr); gap: 56px; }
  }

  .anchor-rail { display: none; }
  @media (min-width: 1024px) {
    .anchor-rail {
      display: block;
      position: sticky;
      top: 96px;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 18px 14px;
      box-shadow: var(--shadow-sm);
    }
  }
  .anchor-rail .rail-title {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .08em;
    color: var(--weak);
    padding: 0 8px 12px;
  }
  .anchor-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 10px;
    border-radius: 8px;
    border-left: 2px solid transparent;
    font-size: 14px;
    color: var(--muted);
    transition: color .2s ease, background .2s ease, border-color .2s ease;
  }
  .anchor-link:hover { color: var(--brand-600); background: var(--brand-50); }
  .anchor-link.active {
    color: var(--brand-700);
    font-weight: 600;
    background: var(--brand-50);
    border-left-color: var(--brand-600);
  }
  .anchor-link .idx {
    font-size: 11px;
    font-variant-numeric: tabular-nums;
    color: var(--weak);
  }

  .content-flow > section { scroll-margin-top: 80px; }
  .content-flow > section + section { margin-top: 56px; }
  @media (min-width: 1024px) {
    .content-flow > section + section { margin-top: 88px; }
  }

  /* ===== 时间线 ===== */
  .timeline { margin-top: 4px; }
  .tl-item { position: relative; padding-left: 54px; padding-bottom: 28px; }
  .tl-item:last-child { padding-bottom: 0; }
  .tl-item::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 34px;
    bottom: 0;
    width: 1px;
    background: var(--border);
  }
  .tl-item:last-child::before { display: none; }
  .tl-dot {
    position: absolute;
    left: 0;
    top: 0;
    width: 32px;
    height: 32px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--brand-100);
    color: var(--brand-700);
    font-size: 12px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    font-variant-numeric: tabular-nums;
  }
  .tl-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-sm);
    padding: 20px 22px;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  }
  .tl-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); border-color: var(--brand-100); }
  .tl-card .tl-time {
    font-size: 13px;
    font-weight: 600;
    color: var(--brand-700);
    margin-bottom: 6px;
    font-variant-numeric: tabular-nums;
  }
  .tl-card h3 { margin-bottom: 8px; }
  .tl-card p { margin-bottom: 0; font-size: 15px; }

  /* ===== 卡片网格 ===== */
  .grid-cards {
    display: grid;
    gap: 24px;
    grid-template-columns: 1fr;
  }
  @media (min-width: 768px) {
    .grid-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  }
  @media (min-width: 1024px) {
    .grid-cards.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .grid-cards.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  }

  .card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-sm);
    padding: 24px;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  }
  .card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    border-color: var(--brand-100);
  }
  .card .card-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--brand-50);
    color: var(--brand-700);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    margin-bottom: 16px;
    font-variant-numeric: tabular-nums;
  }
  .card h3 { margin-bottom: 10px; }
  .card p { font-size: 15px; margin-bottom: 0; }

  .check-list { margin-top: 14px; }
  .check-list li {
    position: relative;
    padding-left: 20px;
    font-size: 14px;
    color: var(--muted);
    line-height: 1.9;
  }
  .check-list li::before {
    content: '';
    position: absolute;
    left: 4px;
    top: 12px;
    width: 6px;
    height: 6px;
    border-radius: 2px;
    background: var(--brand-600);
  }

  /* ===== 图文交替 ===== */
  .split {
    display: grid;
    gap: 28px;
    align-items: center;
  }
  @media (min-width: 1024px) {
    .split { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 56px; }
    .split.reverse .split-media { order: 2; }
  }
  .split-media img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    border-radius: var(--radius-img);
    border: 1px solid var(--border);
  }
  .split-body h3 { margin-bottom: 12px; }
  .split-body p { font-size: 15px; }
  .split-body .badge { margin-bottom: 14px; }

  .note-strip {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    background: var(--brand-50);
    border: 1px solid var(--brand-100);
    border-radius: var(--radius-card);
    padding: 16px 20px;
    font-size: 14px;
    color: var(--brand-700);
    font-weight: 600;
  }
  .note-strip span.dot {
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: var(--accent-500);
    display: inline-block;
  }

  /* ===== FAQ ===== */
  .faq-list { display: grid; gap: 12px; }
  .faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: border-color .2s ease, box-shadow .2s ease;
  }
  .faq-item.open { border-color: var(--brand-100); box-shadow: var(--shadow-card); }
  .faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    text-align: left;
    background: none;
    border: 0;
    padding: 18px 20px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    transition: color .2s ease;
  }
  .faq-item.open .faq-q { color: var(--brand-700); }
  .faq-arrow { flex-shrink: 0; transition: transform .25s ease; color: var(--brand-600); }
  .faq-item.open .faq-arrow { transform: rotate(180deg); }
  .faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
  }
  .faq-a-inner {
    padding: 0 20px 20px;
    font-size: 15px;
    color: var(--muted);
    line-height: 1.8;
  }

  /* ===== CTA + 表单 ===== */
  .cta-block {
    background: var(--dark);
    border-radius: var(--radius-card);
    padding: 32px 24px;
    color: #fff;
  }
  @media (min-width: 1024px) {
    .cta-block { padding: 48px; }
  }
  .cta-grid { display: grid; gap: 32px; }
  @media (min-width: 1024px) {
    .cta-grid { grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
  }
  .cta-block h2 { color: #fff; margin-bottom: 14px; }
  .cta-block p { color: rgba(255, 255, 255, .72); }
  .cta-points { margin-top: 20px; display: grid; gap: 10px; }
  .cta-points li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, .85);
  }
  .cta-points li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 2px;
    background: var(--accent-500);
    flex-shrink: 0;
  }

  .form-card {
    background: #fff;
    border-radius: var(--radius-card);
    padding: 24px;
    box-shadow: var(--shadow-card);
  }
  .form-card h3 { margin-bottom: 18px; font-size: 18px; }
  .field { margin-bottom: 16px; }
  .field label {
    display: block;
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 6px;
  }
  .input, .select, .textarea {
    width: 100%;
    height: 44px;
    padding: 0 14px;
    font-size: 15px;
    font-family: inherit;
    color: var(--text);
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    transition: border-color .2s ease, box-shadow .2s ease;
  }
  .textarea { height: auto; padding: 12px 14px; min-height: 92px; resize: vertical; line-height: 1.7; }
  .input:focus, .select:focus, .textarea:focus {
    outline: none;
    border-color: var(--brand-600);
    box-shadow: 0 0 0 3px rgba(15, 90, 120, .12);
  }
  .form-row { display: grid; gap: 16px; }
  @media (min-width: 560px) {
    .form-row.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  }
  .checkbox-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13px;
    color: var(--muted);
    margin: 4px 0 18px;
    line-height: 1.6;
  }
  .checkbox-row input { margin-top: 4px; width: 16px; height: 16px; accent-color: var(--brand-600); flex-shrink: 0; }
  .submit-btn { width: 100%; }

  /* ===== 页脚 ===== */
  .site-footer {
    background: var(--dark);
    color: rgba(255, 255, 255, .68);
    padding-top: 56px;
    padding-bottom: 28px;
    margin-top: 56px;
  }
  @media (min-width: 1024px) {
    .site-footer { padding-top: 72px; margin-top: 96px; }
  }
  .footer-grid {
    display: grid;
    gap: 32px;
    grid-template-columns: 1fr;
  }
  @media (min-width: 640px) {
    .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  }
  @media (min-width: 1024px) {
    .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
  }
  .footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 17px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
  }
  .footer-brand .brand-mark { background: var(--brand-600); }
  .site-footer p { color: rgba(255, 255, 255, .62); font-size: 14px; line-height: 1.8; margin-bottom: 0; }
  .footer-title {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
  }
  .footer-links, .footer-contact { display: grid; gap: 10px; font-size: 14px; }
  .footer-links a { color: rgba(255, 255, 255, .68); transition: color .2s ease; }
  .footer-links a:hover { color: #fff; text-decoration: underline; }
  .footer-contact span { color: rgba(255, 255, 255, .62); }
  .footer-bottom {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, .12);
    display: flex;
    flex-wrap: wrap;
    gap: 10px 24px;
    justify-content: space-between;
    font-size: 13px;
    color: rgba(255, 255, 255, .5);
  }