/* roulang page: index */
:root{
  --brand:#1E5AA8;--brand-d:#17457F;--brand-x:#0E2A4E;--brand-l:#2C74C9;--brand-bg:#E3EDF9;
  --accent:#F26522;--accent-h:#D9541A;--accent-bg:#FEF0E7;
  --teal:#12A594;--teal-bg:#E4F5F3;
  --t1:#10171F;--t2:#2C3A4A;--t3:#5A6B7D;--t4:#9AA8B6;
  --bg:#F5F7FA;--card:#FFFFFF;--line:#E3E8EF;--div:#EEF1F5;
  --ok:#1F9D6B;--warn:#E0A32A;--err:#D64545;
  --r-card:12px;--r-panel:16px;--r-btn:10px;
  --sh1:0 1px 2px rgba(16,23,31,.06),0 1px 3px rgba(16,23,31,.04);
  --sh2:0 4px 12px rgba(16,23,31,.07);
  --sh3:0 12px 28px rgba(16,23,31,.10);
  --max:1200px;--sec:88px;--gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--t3);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16.5px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:3px solid rgba(30,90,168,.28);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 32px}
.section{padding:var(--sec) 0}
.section-tight{padding:64px 0}
.section-alt{background:#fff}
.section-line{border-top:1px solid var(--div)}

h1,h2,h3,h4{color:var(--t1);line-height:1.25;letter-spacing:-.01em;font-weight:700}
h1{font-size:48px}
h2{font-size:32px}
h3{font-size:22px}
.lead{font-size:16.5px;color:var(--t3);line-height:1.75}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.sec-head .eyebrow{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--brand);font-weight:600;letter-spacing:.06em;margin-bottom:10px}
.sec-head .eyebrow::before{content:"";width:26px;height:2px;background:var(--brand);display:block}
.sec-head p{margin-top:10px;color:var(--t3);max-width:660px}
.sec-more{color:var(--brand);font-size:14.5px;font-weight:600;white-space:nowrap;transition:transform .18s}
.sec-more i{margin-left:6px;transition:transform .18s}
.sec-more:hover{color:var(--brand-d)}
.sec-more:hover i{transform:translateX(4px)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;border-radius:var(--r-btn);font-size:15.5px;font-weight:600;transition:background-color .2s cubic-bezier(.2,.7,.3,1),color .2s,transform .2s,box-shadow .2s;white-space:nowrap}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-h)}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-d)}
.btn-ghost{background:#fff;color:var(--brand);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--brand-l);color:var(--brand-d);box-shadow:var(--sh2)}
.btn-block{width:100%}
.btn:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none}
.btn-sm{height:38px;padding:0 16px;font-size:14px}

.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:12px;font-size:12px;font-weight:600;line-height:1.6}
.badge-blue{background:var(--brand-bg);color:var(--brand-d)}
.badge-accent{background:var(--accent-bg);color:var(--accent-h)}
.badge-teal{background:var(--teal-bg);color:#0C7F72}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s,height .2s}
.site-header.is-scrolled{box-shadow:var(--sh2)}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px;transition:height .2s}
.site-header.is-scrolled .nav-wrap{height:64px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;letter-spacing:.02em}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text b{font-size:18px;color:var(--brand-d);letter-spacing:.01em}
.logo-text span{font-size:11px;color:var(--t4);letter-spacing:.16em;margin-top:3px}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{position:relative;padding:8px 12px;font-size:15px;color:var(--t2);border-radius:8px;transition:color .18s,background-color .18s}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:-14px;height:2px;background:transparent;transition:background-color .18s}
.nav-link:hover{color:var(--brand);background:var(--brand-bg)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{background:var(--brand)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;color:var(--t2);font-size:17px}

/* ---------- hero ---------- */
.hero{background:linear-gradient(180deg,#FFFFFF 0%,#F5F7FA 100%);padding:96px 0 88px;border-bottom:1px solid var(--div)}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center}
.hero h1{margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{font-size:17px;color:var(--t2);max-width:560px;margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.trust{display:flex;flex-wrap:wrap;gap:32px;padding-top:26px;border-top:1px solid var(--line)}
.trust-item b{display:block;font-size:24px;color:var(--t1);font-weight:700;letter-spacing:-.02em}
.trust-item span{font-size:13px;color:var(--t4)}
.hero-visual{position:relative}
.hero-visual>img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-panel);box-shadow:var(--sh3)}
.scorecard{position:absolute;left:-18px;bottom:-26px;width:268px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh2);padding:16px}
.scorecard-head{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--t4);margin-bottom:12px}
.live{display:inline-flex;align-items:center;gap:6px;color:var(--accent-h);font-weight:700;font-size:11.5px;letter-spacing:.08em}
.live::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent)}
.scorecard-main{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:12px}
.scorecard-main .team{text-align:center;flex:1}
.scorecard-main .team span{display:block;font-size:12.5px;color:var(--t3);margin-bottom:4px}
.scorecard-main .team b{font-size:28px;color:var(--t1);letter-spacing:-.02em}
.scorecard-main .colon{color:var(--t4);font-size:20px;padding-bottom:12px}
.scorecard-foot{display:flex;justify-content:space-between;font-size:12.5px;color:var(--t4);border-top:1px solid var(--div);padding-top:10px}

/* ---------- quickbar ---------- */
.quickbar{background:#fff;border-bottom:1px solid var(--div);padding:20px 0}
.quickbar-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.quick-item{display:flex;align-items:center;gap:12px;padding:14px 18px;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;transition:border-color .2s,box-shadow .2s,transform .2s}
.quick-item:hover{border-color:var(--brand-l);box-shadow:var(--sh2);transform:translateY(-2px)}
.quick-item i{width:38px;height:38px;border-radius:10px;background:var(--brand-bg);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:16px;flex:0 0 auto}
.quick-item b{display:block;font-size:15px;color:var(--t1)}
.quick-item span{font-size:12.5px;color:var(--t4)}

/* ---------- ladder ---------- */
.ladder{position:relative;margin-top:8px}
.ladder::before{content:"";position:absolute;left:23px;top:14px;bottom:14px;width:1px;background:var(--line)}
.step{display:grid;grid-template-columns:48px 1fr;gap:20px;margin-bottom:20px}
.step-axis{position:relative;display:flex;justify-content:center;padding-top:26px}
.step-axis .dot{width:13px;height:13px;border-radius:50%;background:#fff;border:2px solid var(--brand-l);position:relative;z-index:1}
.step.is-active .step-axis .dot{background:var(--accent);border-color:var(--accent);box-shadow:0 0 0 5px var(--accent-bg)}
.step-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);padding:24px 26px;margin-left:var(--indent,0);transition:box-shadow .2s,transform .2s,border-color .2s}
.step-card:hover{box-shadow:var(--sh3);transform:translateY(-3px)}
.step.is-active .step-card{border-left:3px solid var(--accent)}
.step-top{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:14px}
.step-top h3{font-size:19px}
.step-top h3 i{font-style:normal;color:var(--t4);font-size:13.5px;margin-right:8px;letter-spacing:.06em}
.step-price{font-size:20px;font-weight:700;color:var(--brand-d)}
.step-price small{font-size:13px;color:var(--t4);font-weight:500}
.step-list{display:grid;grid-template-columns:repeat(3,1fr);gap:10px 20px;margin-bottom:18px}
.step-list li{font-size:14.5px;color:var(--t3);position:relative;padding-left:18px}
.step-list li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--teal)}
.step-note{font-size:13px;color:var(--t4);border-top:1px dashed var(--line);padding-top:12px}

/* ---------- compare ---------- */
.compare-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-panel);box-shadow:var(--sh1);overflow:hidden}
.compare-table thead th{position:sticky;top:72px;background:#fff;height:64px;font-size:15px;color:var(--t2);text-align:center;border-bottom:1px solid var(--line);font-weight:600;z-index:2}
.compare-table th:first-child,.compare-table td:first-child{text-align:left;padding-left:26px;color:var(--t2);font-weight:600}
.compare-table td{height:56px;text-align:center;font-size:14.5px;color:var(--t3);border-bottom:1px solid var(--div)}
.compare-table tbody tr:nth-child(even){background:#FAFBFD}
.compare-table tbody tr:last-child td{border-bottom:0}
.col-best{background:var(--accent-bg);border-left:2px solid var(--accent);border-right:2px solid var(--accent)}
.col-best-head{color:var(--accent-h)}
.compare-table .yes{color:var(--teal);font-weight:700}
.compare-table .no{color:var(--t4)}
.compare-cards{display:none}
.compare-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);padding:18px;margin-bottom:14px}
.compare-card h4{font-size:16px;margin-bottom:12px}
.compare-row{display:flex;flex-wrap:wrap;gap:8px}
.compare-row span{font-size:12.5px;color:var(--t3);background:var(--bg);border:1px solid var(--div);border-radius:10px;padding:4px 10px}
.compare-row span b{color:var(--t1);font-weight:600}

/* ---------- flash ---------- */
.flash{background:var(--brand-x);color:#fff;padding:0}
.flash-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;min-height:140px;padding:26px 0}
.flash-label{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.14em;color:rgba(255,255,255,.72);margin-bottom:10px}
.flash-label::before{content:"";width:22px;height:2px;background:var(--accent)}
.flash h2{color:#fff;font-size:28px;margin-bottom:8px}
.flash p{color:rgba(255,255,255,.72);font-size:14.5px;max-width:560px}
.countdown{display:flex;align-items:center;gap:8px;margin-bottom:12px}
.countdown b{display:inline-flex;align-items:center;justify-content:center;min-width:52px;height:52px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:10px;font-size:24px;color:#fff;letter-spacing:-.02em}
.countdown i{font-style:normal;color:rgba(255,255,255,.5);font-size:20px}
.flash-right{display:flex;flex-direction:column;align-items:flex-end;flex:0 0 auto}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:24px;align-items:start}
.news-lead{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);overflow:hidden;transition:box-shadow .2s,transform .2s}
.news-lead:hover{box-shadow:var(--sh3);transform:translateY(-3px)}
.news-lead-media{overflow:hidden}
.news-lead-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s}
.news-lead:hover .news-lead-media img{transform:scale(1.03)}
.news-lead-body{padding:22px}
.news-lead-body h3{font-size:20px;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-lead-body p{font-size:14.5px;color:var(--t3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--t4);margin-top:14px}
.news-side{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.news-mini{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);padding:18px;display:flex;flex-direction:column;gap:10px;transition:box-shadow .2s,transform .2s}
.news-mini:hover{box-shadow:var(--sh3);transform:translateY(-3px)}
.news-mini h4{font-size:16px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--t1)}
.news-mini .news-meta{margin-top:auto}
.empty{background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);padding:56px 24px;text-align:center}
.empty svg{width:52px;height:52px;color:var(--t4);margin:0 auto 16px}
.empty p{color:var(--t3);margin-bottom:16px}

/* ---------- capability ---------- */
.capab{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start}
.capab-side{position:sticky;top:100px}
.capab-side h2{margin-bottom:14px}
.capab-side p{font-size:15px;color:var(--t3);margin-bottom:22px}
.capab-list{border-top:1px solid var(--line)}
.capab-item{display:grid;grid-template-columns:64px 1fr;gap:20px;padding:26px 0;border-bottom:1px solid var(--line);transition:background-color .2s}
.capab-item:hover{background:#fff}
.capab-item .idx{font-size:14px;color:var(--t4);letter-spacing:.06em;padding-top:4px}
.capab-item h3{font-size:19px;margin-bottom:8px}
.capab-item p{font-size:14.5px;color:var(--t3);max-width:720px}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);margin-bottom:12px;overflow:hidden;transition:box-shadow .2s}
.faq-item:hover{box-shadow:var(--sh2)}
.faq-item summary{list-style:none;cursor:pointer;position:relative;padding:20px 58px 20px 22px;font-size:17px;font-weight:600;color:var(--t1);line-height:1.5}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);font-size:22px;line-height:1;color:var(--brand)}
.faq-item[open]{box-shadow:var(--sh2)}
.faq-item[open] summary::after{content:"−"}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--t3);line-height:1.8}

/* ---------- form ---------- */
.consult{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.consult-left h2{margin-bottom:16px}
.consult-left p{font-size:15.5px;margin-bottom:24px}
.consult-points li{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--t2)}
.consult-points li i{color:var(--teal);margin-top:5px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-panel);box-shadow:var(--sh2);padding:28px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;color:var(--t2);margin-bottom:8px;font-weight:600}
.field label .req{color:var(--accent)}
.field input,.field select,.field textarea{width:100%;height:46px;padding:0 14px;background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);color:var(--t1);font-size:15px;transition:border-color .18s,box-shadow .18s}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(30,90,168,.14)}
.field .err{display:none;color:var(--err);font-size:13px;margin-top:6px}
.field.has-error .err{display:block}
.field.has-error input,.field.has-error select{border-color:var(--err)}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--t4);line-height:1.6;margin-bottom:18px}
.check input{width:16px;height:16px;margin-top:2px;flex:0 0 auto;accent-color:var(--brand)}
.form-success{display:none;align-items:center;gap:10px;background:var(--teal-bg);color:#0C7F72;border-radius:var(--r-btn);padding:14px 16px;font-size:14.5px;margin-top:16px}
.form-success.is-on{display:flex}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-x);color:#fff;margin-top:0;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand .logo-text b{color:#fff}
.footer-brand .logo-text span{color:rgba(255,255,255,.6)}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.72);margin-top:16px;max-width:320px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s}
.footer-col a:hover{color:#fff}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.72);margin-bottom:10px;display:flex;gap:10px}
.footer-contact i{color:var(--accent);margin-top:5px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6)}

/* ---------- mobile tab ---------- */
.tabbar{display:none}
.drawer{position:fixed;inset:0;z-index:90;background:rgba(14,42,78,.45);opacity:0;visibility:hidden;transition:opacity .2s,visibility .2s}
body.drawer-open .drawer{opacity:1;visibility:visible}
.drawer-panel{position:absolute;right:0;top:0;height:100%;width:min(86vw,340px);background:#fff;padding:22px;transform:translateX(100%);transition:transform .26s cubic-bezier(.2,.7,.3,1);overflow-y:auto}
body.drawer-open .drawer-panel{transform:none}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;margin-left:auto;margin-bottom:18px;color:var(--t2)}
.drawer-nav a{display:block;padding:14px 12px;border-radius:10px;font-size:16px;color:var(--t2);border-bottom:1px solid var(--div)}
.drawer-nav a.is-active{color:var(--brand);font-weight:600;background:var(--brand-bg)}
.drawer-nav{margin-bottom:22px}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero h1{font-size:42px}
}
@media (max-width:1023px){
  :root{--sec:72px}
  .container{padding:0 24px}
  .nav-main{display:none}
  .nav-actions .btn-ghost{display:none}
  .nav-toggle{display:flex}
  .nav-wrap{height:60px;gap:16px}
  .site-header.is-scrolled .nav-wrap{height:56px}
  h1{font-size:36px}
  h2{font-size:27px}
  .hero{padding:64px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:52px}
  .hero-visual{order:2}
  .scorecard{left:auto;right:14px;bottom:-18px;width:238px}
  .quickbar-inner{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr}
  .capab{grid-template-columns:1fr;gap:28px}
  .capab-side{position:static}
  .consult{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .compare-wrap{display:none}
  .compare-cards{display:block}
  .flash-inner{flex-direction:column;align-items:flex-start;gap:22px;padding:32px 0}
  .flash-right{align-items:flex-start}
  .step-list{grid-template-columns:1fr 1fr}
  .tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;background:#fff;border-top:1px solid var(--line);box-shadow:0 -2px 10px rgba(16,23,31,.06);padding-bottom:env(safe-area-inset-bottom)}
  .tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:9px 0 8px;font-size:11px;color:var(--t4);position:relative}
  .tabbar a i{font-size:20px}
  .tabbar a.is-active{color:var(--brand)}
  .tabbar a.is-active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:28px;height:3px;border-radius:0 0 3px 3px;background:var(--brand)}
  body{padding-bottom:72px}
  .site-footer{padding-bottom:72px}
}
@media (max-width:767px){
  :root{--sec:56px}
  .container{padding:0 16px}
  h1{font-size:32px}
  h2{font-size:24px}
  h3{font-size:19px}
  body{font-size:16px}
  .hero h1{font-size:31px}
  .hero-sub{font-size:16px}
  .hero-cta .btn{flex:1 1 100%}
  .trust{gap:20px}
  .trust-item b{font-size:21px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px}
  .quickbar-inner{display:flex;overflow-x:auto;gap:12px;padding-bottom:6px;scrollbar-width:none}
  .quickbar-inner::-webkit-scrollbar{display:none}
  .quick-item{flex:0 0 210px}
  .news-side{grid-template-columns:1fr}
  .step{grid-template-columns:36px 1fr;gap:12px}
  .ladder::before{left:17px}
  .step-card{padding:20px;margin-left:0!important}
  .step-list{grid-template-columns:1fr}
  .step-top{flex-direction:column;align-items:flex-start;gap:6px}
  .capab-item{grid-template-columns:44px 1fr;gap:12px;padding:20px 0}
  .faq-item summary{font-size:16px;padding:18px 52px 18px 18px}
  .form-card{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:6px}
  .flash h2{font-size:22px}
  .countdown b{min-width:46px;height:46px;font-size:20px}
}
@media (max-width:479px){
  .logo-text span{display:none}
  .hero-visual>img{border-radius:12px}
  .scorecard{position:static;width:100%;margin-top:14px;left:auto;right:auto;bottom:auto}
}

/* roulang page: article */
:root{
  --brand:#1E5AA8;
  --brand-dark:#17457F;
  --brand-deep:#0E2A4E;
  --brand-light:#2C74C9;
  --brand-soft:#E3EDF9;
  --accent:#F26522;
  --accent-hover:#D9541A;
  --accent-soft:#FEF0E7;
  --teal:#12A594;
  --teal-soft:#E4F5F3;
  --text:#10171F;
  --text-2:#2C3A4A;
  --text-3:#5A6B7D;
  --text-4:#9AA8B6;
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --border:#E3E8EF;
  --divider:#EEF1F5;
  --success:#1F9D6B;
  --warning:#E0A32A;
  --danger:#D64545;
  --radius-sm:10px;
  --radius:12px;
  --radius-lg:16px;
  --shadow-1:0 1px 2px rgba(16,23,31,.06), 0 1px 3px rgba(16,23,31,.04);
  --shadow-2:0 4px 12px rgba(16,23,31,.07);
  --shadow-3:0 12px 28px rgba(16,23,31,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.75;
  color:var(--text-3);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--text);line-height:1.25;letter-spacing:-.01em;font-weight:700}
p{margin:0}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:3px solid rgba(30,90,168,.28);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
.container-narrow{max-width:1120px;margin:0 auto;padding:0 32px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:32px}
.section-head .sub{margin-top:8px;font-size:15px;color:var(--text-3)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.04em;margin-bottom:14px}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--brand);border-radius:2px}
.eyebrow.on-dark{color:#8FB8E8}
.eyebrow.on-dark::before{background:#8FB8E8}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn i{font-size:14px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-hover)}
.btn-ghost{background:#fff;border-color:var(--border);color:var(--brand-dark)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-text{height:auto;padding:0;color:var(--brand);font-weight:600;gap:6px}
.btn-text i{transition:transform .2s var(--ease)}
.btn-text:hover i{transform:translateX(4px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn:disabled,.btn.is-disabled{opacity:.5;pointer-events:none}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;line-height:1}
.badge-brand{background:var(--brand-soft);color:var(--brand)}
.badge-accent{background:var(--accent-soft);color:var(--accent)}
.badge-teal{background:var(--teal-soft);color:var(--teal)}

/* 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 var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-2)}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px;transition:height .25s var(--ease)}
.site-header.is-scrolled .nav-wrap{height:64px}
.logo{display:flex;align-items:center;gap:10px}
.logo-mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:18px;font-weight:700;flex:none;
}
.logo-text{display:flex;flex-direction:column;line-height:1.12}
.logo-text b{font-size:17px;color:var(--brand-dark);letter-spacing:-.01em}
.logo-text span{font-size:11px;color:var(--text-4);letter-spacing:.1em}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:8px 12px;border-radius:8px;font-size:15px;color:var(--text-2);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.nav-link:hover{background:var(--brand-soft);color:var(--brand)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--brand);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
  color:var(--brand-dark);place-items:center;font-size:16px;background:#fff;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}

/* 文章头部 */
.article-hero{background:#fff;border-bottom:1px solid var(--border);padding:34px 0 40px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-4);margin-bottom:18px}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#C6D0DB}
.breadcrumb .current{color:var(--text-4);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{font-size:38px;line-height:1.28;margin:14px 0 18px;max-width:900px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px;font-size:13.5px;color:var(--text-4)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--brand-light);font-size:13px}

/* 正文布局 */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;
  padding:48px 0 24px;
}
.article-main{min-width:0}
.article-body{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:40px 44px;font-size:17px;line-height:1.9;color:var(--text-2);
  box-shadow:var(--shadow-1);overflow-wrap:break-word;word-break:break-word;
}
.article-body>*+*{margin-top:1.2em}
.article-body p{margin:0;color:var(--text-2)}
.article-body h2{
  font-size:24px;margin:40px 0 16px;padding-left:14px;border-left:3px solid var(--brand);color:var(--text);
}
.article-body h3{font-size:19px;margin:32px 0 12px;color:var(--text)}
.article-body h4{font-size:17px;margin:24px 0 10px;color:var(--text-2)}
.article-body ul,.article-body ol{padding-left:22px;margin:16px 0}
.article-body ul li{list-style:disc}
.article-body ol li{list-style:decimal}
.article-body li{margin:8px 0;color:var(--text-2)}
.article-body li::marker{color:var(--brand-light)}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;background:var(--brand-soft);color:var(--text-2);
  border-left:4px solid var(--brand);border-radius:0 var(--radius) var(--radius) 0;font-size:16px;
}
.article-body blockquote p{margin:0}
.article-body img{border-radius:var(--radius);margin:24px auto;max-width:100%;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-4);text-align:center;margin-top:8px}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(30,90,168,.32)}
.article-body a:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark)}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;display:block;overflow-x:auto;
}
.article-body th,.article-body td{border:1px solid var(--border);padding:10px 14px;text-align:left;white-space:nowrap}
.article-body th{background:var(--brand-soft);color:var(--brand-dark);font-weight:600}
.article-body tr:nth-child(even) td{background:#FAFBFD}
.article-body pre{
  background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);
  padding:16px 18px;overflow-x:auto;margin:24px 0;font-family:var(--mono);font-size:14px;line-height:1.7;color:var(--text-2);
}
.article-body code{font-family:var(--mono);background:var(--divider);padding:2px 6px;border-radius:6px;font-size:.9em;color:var(--brand-dark)}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body hr{border:none;border-top:1px solid var(--divider);margin:32px 0}

/* 侧栏 */
.sidebar{position:sticky;top:96px;display:grid;gap:20px}
.side-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-1)}
.side-card h3{font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:8px;color:var(--text)}
.side-card h3 i{color:var(--brand-light);font-size:14px}
.side-list{display:grid;gap:4px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 10px;border-radius:8px;font-size:14.5px;color:var(--text-3);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.side-list a:hover{background:var(--brand-soft);color:var(--brand)}
.side-list a i{font-size:12px;color:var(--text-4);transition:transform .2s var(--ease)}
.side-list a:hover i{transform:translateX(3px);color:var(--brand)}
.side-note{font-size:13.5px;color:var(--text-3);line-height:1.7}
.side-cta{margin-top:14px;display:grid;gap:10px}

/* 空态 */
.empty-state{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:64px 32px;text-align:center;box-shadow:var(--shadow-1);
}
.empty-state i{font-size:34px;color:var(--text-4)}
.empty-state h2{font-size:22px;margin:16px 0 10px}
.empty-state p{font-size:15px;color:var(--text-3);max-width:520px;margin:0 auto 24px}

/* 相关推荐 */
.related{padding:56px 0 8px}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.related-head h2{font-size:26px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-3)}
.card-media{aspect-ratio:16/9;overflow:hidden;background:var(--divider)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;line-height:1.5}
.card-body p{font-size:14px;color:var(--text-3);line-height:1.7}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;font-size:13px;color:var(--text-4)}
.card-foot .go{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600}
.card:hover .card-foot .go i{transform:translateX(3px)}
.card-foot .go i{transition:transform .2s var(--ease)}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600}

/* 返回条 */
.back-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:32px 0 72px}
.back-bar .hint{font-size:14px;color:var(--text-3)}

/* CTA 条 */
.cta-band{
  background:var(--brand-deep);color:#fff;border-radius:var(--radius-lg);
  padding:32px 36px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  margin-bottom:72px;
}
.cta-band h2{color:#fff;font-size:24px;margin-bottom:8px}
.cta-band p{color:rgba(255,255,255,.72);font-size:14.5px;max-width:600px}
.cta-band .cta-actions{display:flex;gap:12px;flex:none}

/* 页脚 */
.site-footer{background:var(--brand-deep);color:#fff;padding:64px 0 28px;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .logo-mark{background:#fff;color:var(--brand-deep)}
.footer-brand .logo-text b{color:#fff}
.footer-brand .logo-text span{color:rgba(255,255,255,.6)}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:340px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:rgba(255,255,255,.72);line-height:1.6}
.footer-contact i{color:#8FB8E8;margin-top:4px;font-size:13px}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}

/* 移动底部 Tab */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;background:#fff;
  border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -2px 10px rgba(16,23,31,.05);
}
.mobile-tab .tab-inner{display:flex}
.mobile-tab a{
  position:relative;flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:9px 2px 7px;font-size:11px;color:var(--text-4);
}
.mobile-tab a i{font-size:19px}
.mobile-tab a.is-active{color:var(--brand)}
.mobile-tab a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:3px;background:var(--brand);border-radius:0 0 3px 3px;
}

@media (max-width:1023px){
  .container,.container-narrow{padding:0 24px}
  .nav-main{display:none}
  .nav-toggle{display:grid}
  .site-header.nav-open .nav-main{
    display:flex;flex-direction:column;align-items:stretch;gap:2px;
    position:absolute;left:0;right:0;top:100%;background:#fff;
    padding:12px 16px 18px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-2);
  }
  .site-header.nav-open .nav-main .nav-link{padding:12px 14px;font-size:15.5px}
  .article-layout{grid-template-columns:1fr;gap:32px;padding-top:36px}
  .sidebar{position:static}
  .article-title{font-size:30px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px}
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
}
@media (max-width:767px){
  body{font-size:16px;padding-bottom:68px}
  .container,.container-narrow{padding:0 16px}
  .nav-wrap{height:56px;gap:12px}
  .site-header.is-scrolled .nav-wrap{height:56px}
  .logo-mark{width:32px;height:32px;font-size:16px}
  .logo-text b{font-size:15.5px}
  .logo-text span{font-size:10px}
  .nav-actions .btn-ghost{display:none}
  .article-hero{padding:22px 0 28px}
  .article-title{font-size:25px;margin:12px 0 16px}
  .breadcrumb{font-size:13px}
  .breadcrumb .current{max-width:180px}
  .article-body{padding:24px 18px;font-size:16px;line-height:1.85;border-radius:var(--radius)}
  .article-body h2{font-size:20px;margin:30px 0 12px}
  .article-body h3{font-size:17.5px}
  .article-body table{font-size:14px}
  .article-body th,.article-body td{padding:8px 10px}
  .related{padding:40px 0 8px}
  .related-head h2{font-size:21px}
  .card-grid{grid-template-columns:1fr}
  .back-bar{padding:24px 0 40px;flex-direction:column;align-items:flex-start}
  .cta-band{margin-bottom:40px;border-radius:var(--radius)}
  .cta-band h2{font-size:20px}
  .cta-band .cta-actions{flex-direction:column;width:100%}
  .cta-band .cta-actions .btn{width:100%}
  .site-footer{padding:48px 0 92px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .mobile-tab{display:block}
  .section{padding:52px 0}
  .section-tight{padding:44px 0}
  .section-head h2{font-size:24px}
}
@media (max-width:479px){
  .container,.container-narrow{padding:0 16px}
  .article-title{font-size:22px}
  .article-body{padding:20px 15px}
  .btn{padding:0 18px;font-size:14.5px}
}

/* roulang page: category1 */
:root{
  --brand:#1E5AA8;
  --brand-deep:#17457F;
  --brand-darkest:#0E2A4E;
  --brand-light:#2C74C9;
  --brand-tint:#E3EDF9;
  --accent:#F26522;
  --accent-hover:#D9541A;
  --accent-tint:#FEF0E7;
  --teal:#12A594;
  --teal-tint:#E4F5F3;
  --text-1:#10171F;
  --text-2:#2C3A4A;
  --text-3:#5A6B7D;
  --text-4:#9AA8B6;
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --line:#E3E8EF;
  --divider:#EEF1F5;
  --success:#1F9D6B;
  --warn:#E0A32A;
  --danger:#D64545;
  --r-card:12px;
  --r-panel:16px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(16,23,31,.06), 0 1px 3px rgba(16,23,31,.04);
  --sh-2:0 4px 12px rgba(16,23,31,.07);
  --sh-3:0 12px 28px rgba(16,23,31,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.75;
  color:var(--text-3);
  background:var(--bg);
  padding-bottom:0;
}
h1,h2,h3,h4{margin:0;color:var(--text-1);line-height:1.25;letter-spacing:-0.01em;font-weight:700;}
p{margin:0;}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--brand-light);}
img{max-width:100%;display:block;border-radius:var(--r-card);}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:3px solid rgba(30,90,168,.28);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.container-narrow{max-width:1120px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease),height .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px;transition:height .2s var(--ease);}
.site-header.is-scrolled .nav-wrap{height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--brand);flex:0 0 auto;}
.logo-mark{
  width:38px;height:38px;border-radius:10px;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:700;letter-spacing:0;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{font-size:18px;color:var(--brand-deep);letter-spacing:.02em;}
.logo-text span{font-size:11.5px;color:var(--text-4);letter-spacing:.14em;}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:12px;}
.nav-link{
  position:relative;
  padding:9px 14px;border-radius:8px;
  font-size:15px;color:var(--text-2);font-weight:500;
  transition:background .18s var(--ease),color .18s var(--ease);
  white-space:nowrap;
}
.nav-link:hover{background:var(--brand-tint);color:var(--brand);}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--text-2);
  font-size:17px;
}
.nav-toggle:hover{background:var(--brand-tint);color:var(--brand);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px;}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:var(--accent-hover);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-3);}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-3);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-tint);color:var(--brand-deep);border-color:var(--brand-tint);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand);
  background:none;border:none;padding:0;
}
.btn-link i{transition:transform .2s var(--ease);}
.btn-link:hover i{transform:translateX(4px);}
.btn:disabled,.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;}

/* ---------- 移动抽屉 ---------- */
.nav-drawer{
  display:none;
  border-top:1px solid var(--divider);
  background:#fff;
  padding:14px 0 20px;
}
.nav-drawer.is-open{display:block;}
.nav-drawer .container{display:flex;flex-direction:column;gap:6px;}
.drawer-link{
  padding:12px 14px;border-radius:10px;font-size:16px;color:var(--text-2);font-weight:500;
}
.drawer-link:hover,.drawer-link.is-active{background:var(--brand-tint);color:var(--brand);}
.drawer-actions{display:flex;gap:10px;margin-top:10px;}
.drawer-actions .btn{flex:1;}

/* ---------- 页面 Hero ---------- */
.page-hero{
  background-image:linear-gradient(rgba(227,237,249,.93),rgba(227,237,249,.93)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  padding:56px 0 48px;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:18px;}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb i{font-size:10px;color:var(--text-4);}
.hero-tag{
  display:inline-flex;align-items:center;gap:7px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:6px 14px;font-size:13px;color:var(--brand);font-weight:600;margin-bottom:16px;
  box-shadow:var(--sh-1);
}
.page-hero h1{font-size:44px;max-width:820px;}
.page-hero .lead{margin-top:16px;font-size:17px;color:var(--text-2);max-width:760px;line-height:1.8;}
.hero-stats{
  margin-top:32px;
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;
}
.stat-item{background:#fff;padding:18px 20px;}
.stat-item b{display:block;font-size:26px;color:var(--brand-deep);letter-spacing:-.02em;font-variant-numeric:tabular-nums;}
.stat-item span{font-size:13.5px;color:var(--text-4);}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-compact{padding:64px 0;}
.section-alt{background:#fff;border-top:1px solid var(--divider);border-bottom:1px solid var(--divider);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--brand);text-transform:uppercase;
  margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:26px;height:2px;background:var(--brand);display:block;border-radius:2px;}
.section-head h2{font-size:31px;}
.section-head p{margin-top:14px;font-size:16.5px;color:var(--text-3);}

/* ---------- 卖点条目（左标题 + 右推进） ---------- */
.split{display:grid;grid-template-columns:360px 1fr;gap:64px;align-items:start;}
.split-aside{position:sticky;top:104px;}
.split-aside h2{font-size:30px;}
.split-aside p{margin-top:16px;font-size:16px;color:var(--text-3);}
.split-aside .aside-figure{margin-top:28px;border-radius:var(--r-panel);overflow:hidden;box-shadow:var(--sh-2);}
.split-aside .aside-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;}
.feature-item{
  display:grid;grid-template-columns:56px 1fr;gap:20px;
  padding:26px 0;border-bottom:1px solid var(--divider);
}
.feature-item:first-child{padding-top:0;}
.feature-item:last-child{border-bottom:none;padding-bottom:0;}
.feature-no{
  font-size:15px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;
  width:56px;height:56px;border-radius:12px;
  background:var(--brand-tint);
  display:flex;align-items:center;justify-content:center;
}
.feature-item h3{font-size:19px;margin-bottom:8px;}
.feature-item p{font-size:15.5px;line-height:1.8;}

/* ---------- 数据维度卡片 ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.data-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.data-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:var(--brand-tint);}
.data-card .ic{
  width:42px;height:42px;border-radius:11px;
  background:var(--teal-tint);color:var(--teal);
  display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:16px;
}
.data-card h3{font-size:18px;margin-bottom:8px;}
.data-card p{font-size:15px;line-height:1.75;}
.data-card .tags{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px;}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:999px;font-size:12px;font-weight:600;
}
.badge-blue{background:var(--brand-tint);color:var(--brand);}
.badge-accent{background:var(--accent-tint);color:var(--accent);}
.badge-teal{background:var(--teal-tint);color:var(--teal);}

/* ---------- 场景图文交替 ---------- */
.scene-block{
  display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;
  padding:40px 0;
  border-top:1px solid var(--divider);
}
.scene-block:first-of-type{border-top:none;padding-top:0;}
.scene-block.reverse .scene-figure{order:2;}
.scene-figure{
  border-radius:var(--r-panel);overflow:hidden;box-shadow:var(--sh-2);position:relative;background:var(--brand-tint);
}
.scene-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .3s var(--ease);}
.scene-block:hover .scene-figure img{transform:scale(1.03);}
.scene-body h3{font-size:22px;margin-bottom:12px;}
.scene-body p{font-size:16px;line-height:1.85;margin-bottom:16px;}
.scene-list{display:flex;flex-direction:column;gap:10px;}
.scene-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-2);}
.scene-list i{color:var(--teal);font-size:14px;margin-top:5px;}

/* ---------- 流程 ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.steps::before{
  content:"";position:absolute;top:26px;left:4%;right:4%;height:1px;
  background:repeating-linear-gradient(90deg,var(--line) 0 10px,transparent 10px 18px);
}
.step{position:relative;padding-top:64px;}
.step-dot{
  position:absolute;top:12px;left:0;
  width:30px;height:30px;border-radius:50%;
  background:#fff;border:1px solid var(--brand);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 6px var(--bg);
}
.section-alt .step-dot{box-shadow:0 0 0 6px #fff;}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14.5px;line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:14px;box-shadow:var(--sh-1);overflow:hidden;
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:none;border:none;text-align:left;
  font-size:17px;font-weight:600;color:var(--text-1);
}
.faq-q .faq-ic{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--brand-tint);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:12px;
  transition:transform .2s var(--ease),background .2s var(--ease);
}
.faq-item.is-open .faq-ic{background:var(--accent-tint);color:var(--accent);transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .18s var(--ease);
}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--text-3);}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--brand-darkest);
  border-radius:var(--r-panel);
  padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--sh-2);
}
.cta-band h2{color:#fff;font-size:26px;}
.cta-band p{color:rgba(255,255,255,.72);margin-top:10px;font-size:15.5px;max-width:640px;}
.cta-band .cta-actions{display:flex;gap:12px;flex:0 0 auto;}
.cta-band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.32);color:#fff;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.5);}

.section-foot{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:36px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-darkest);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:88px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;}
.site-footer .logo-mark{background:#fff;color:var(--brand-darkest);}
.site-footer .logo-text b{color:#fff;}
.site-footer .logo-text span{color:rgba(255,255,255,.6);}
.footer-brand p{margin-top:18px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.7);max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{color:rgba(255,255,255,.72);font-size:14.5px;}
.footer-col a:hover{color:#fff;}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;}
.footer-contact i{color:var(--accent);margin-top:5px;font-size:13px;}
.footer-contact a{color:rgba(255,255,255,.72);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.55);
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:120;
  background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -2px 12px rgba(16,23,31,.06);
}
.mobile-tabbar .tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:60px;position:relative;color:var(--text-4);font-size:11px;
}
.mobile-tabbar .tab-item i{font-size:21px;}
.mobile-tabbar .tab-item.is-active{color:var(--brand);}
.mobile-tabbar .tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:34px;height:3px;border-radius:0 0 3px 3px;background:var(--brand);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 28px;}
  .split{grid-template-columns:320px 1fr;gap:44px;}
}
@media (max-width:1023px){
  .nav-main{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-actions .btn{display:none;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split-aside{position:static;}
  .split-aside .aside-figure{max-width:560px;}
  .grid-cards{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-hero h1{font-size:36px;}
  .section{padding:64px 0;}
  .section-compact{padding:48px 0;}
  .scene-block{grid-template-columns:1fr;gap:24px;padding:32px 0;}
  .scene-block.reverse .scene-figure{order:0;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .steps::before{display:none;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px;padding-bottom:72px;}
  .container{padding:0 16px;}
  .nav-wrap{height:56px;gap:12px;}
  .site-header.is-scrolled .nav-wrap{height:56px;}
  .logo-mark{width:34px;height:34px;font-size:17px;border-radius:9px;}
  .logo-text b{font-size:16.5px;}
  .logo-text span{font-size:10.5px;letter-spacing:.1em;}
  .page-hero{padding:36px 0 34px;}
  .page-hero h1{font-size:28px;}
  .page-hero .lead{font-size:15.5px;}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-item b{font-size:22px;}
  .section{padding:52px 0;}
  .section-compact{padding:40px 0;}
  .section-head{margin-bottom:28px;}
  .section-head h2{font-size:24px;}
  .split-aside h2{font-size:24px;}
  .grid-cards{grid-template-columns:1fr;}
  .feature-item{grid-template-columns:48px 1fr;gap:14px;}
  .feature-no{width:48px;height:48px;font-size:14px;}
  .feature-item h3{font-size:17px;}
  .steps{grid-template-columns:1fr;gap:22px;}
  .cta-band h2{font-size:22px;}
  .cta-band .cta-actions{width:100%;flex-direction:column;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .site-footer{padding:48px 0 24px;margin-top:56px;}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:32px;}
  .mobile-tabbar{display:flex;}
  .faq-q{font-size:16px;padding:18px 18px;}
  .faq-a p{padding:0 18px 20px;}
}
@media (max-width:479px){
  .page-hero h1{font-size:24px;}
  .stat-item{padding:14px 16px;}
  .footer-grid{grid-template-columns:1fr;}
}

/* roulang page: category2 */
:root {
  --brand: #1E5AA8;
  --brand-d: #17457F;
  --brand-x: #0E2A4E;
  --brand-l: #2C74C9;
  --brand-soft: #E3EDF9;
  --accent: #F26522;
  --accent-h: #D9541A;
  --accent-soft: #FEF0E7;
  --teal: #12A594;
  --teal-soft: #E4F5F3;
  --ink: #10171F;
  --ink-2: #2C3A4A;
  --text: #5A6B7D;
  --muted: #9AA8B6;
  --bg: #F5F7FA;
  --surface: #FFFFFF;
  --line: #E3E8EF;
  --divider: #EEF1F5;
  --ok: #1F9D6B;
  --warn: #E0A32A;
  --err: #D64545;
  --r-card: 12px;
  --r-panel: 16px;
  --r-btn: 10px;
  --sh-1: 0 1px 2px rgba(16,23,31,.06), 0 1px 3px rgba(16,23,31,.04);
  --sh-2: 0 4px 12px rgba(16,23,31,.07);
  --sh-3: 0 12px 28px rgba(16,23,31,.10);
  --ease: cubic-bezier(.2,.7,.3,1);
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", "Source Han Sans SC", sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; color: var(--ink); line-height: 1.25; letter-spacing: -.01em; font-weight: 700; }
p { margin: 0; }
button, input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }
button { cursor: pointer; border: none; background: none; }

:focus-visible {
  outline: 3px solid rgba(30,90,168,.28);
  outline-offset: 2px;
  border-radius: 6px;
}

.num { font-variant-numeric: tabular-nums; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}
.container-narrow { max-width: 1120px; }

/* ============ 导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: #fff;
  border-bottom: 1px solid var(--line);
  transition: box-shadow .2s var(--ease), height .2s var(--ease);
}
.site-header.is-scrolled { box-shadow: var(--sh-2); }
.nav-wrap {
  height: 72px;
  display: flex;
  align-items: center;
  gap: 28px;
  transition: height .2s var(--ease);
}
.site-header.is-scrolled .nav-wrap { height: 64px; }

.logo { display: inline-flex; align-items: center; gap: 10px; flex: none; }
.logo-mark {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--brand);
  color: #fff;
  display: grid; place-items: center;
  font-size: 18px; font-weight: 700;
  letter-spacing: 0;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-text b { font-size: 17px; color: var(--ink); letter-spacing: .01em; }
.logo-text span { font-size: 11.5px; color: var(--muted); letter-spacing: .16em; }

.nav-main { display: flex; align-items: center; gap: 4px; margin-right: auto; }
.nav-link {
  position: relative;
  padding: 9px 12px;
  font-size: 15px;
  color: var(--ink-2);
  border-radius: 8px;
  transition: color .18s var(--ease), background .18s var(--ease);
  white-space: nowrap;
}
.nav-link:hover { color: var(--brand); background: var(--brand-soft); }
.nav-link.is-active { color: var(--brand); font-weight: 600; }
.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand);
}

.nav-actions { display: flex; align-items: center; gap: 10px; flex: none; }
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border-radius: 10px;
  border: 1px solid var(--line);
  color: var(--ink-2);
  font-size: 17px;
  background: #fff;
}
.nav-toggle:hover { border-color: var(--brand); color: var(--brand); }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 24px;
  border-radius: var(--r-btn);
  font-size: 15.5px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: background .18s var(--ease), color .18s var(--ease), transform .18s var(--ease), box-shadow .18s var(--ease);
  white-space: nowrap;
}
.btn-sm { height: 38px; padding: 0 16px; font-size: 14px; }
.btn-lg { height: 52px; padding: 0 30px; font-size: 16.5px; }
.btn-accent { background: var(--accent); color: #fff; box-shadow: var(--sh-1); }
.btn-accent:hover { background: var(--accent-h); transform: translateY(-1px); box-shadow: var(--sh-2); }
.btn-primary { background: var(--brand); color: #fff; box-shadow: var(--sh-1); }
.btn-primary:hover { background: var(--brand-d); transform: translateY(-1px); box-shadow: var(--sh-2); }
.btn-ghost { background: #fff; color: var(--brand); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--brand); background: var(--brand-soft); }
.btn-on-dark { background: transparent; color: #fff; border-color: rgba(255,255,255,.42); }
.btn-on-dark:hover { background: rgba(255,255,255,.12); border-color: #fff; }
.btn-text { color: var(--brand); font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.btn-text i { transition: transform .18s var(--ease); font-size: 13px; }
.btn-text:hover i { transform: translateX(4px); }
.btn:disabled, .btn.is-disabled { opacity: .5; pointer-events: none; }

/* ============ 徽章 / 标签 ============ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border-radius: 12px;
  font-size: 12.5px;
  font-weight: 600;
  line-height: 1.5;
}
.badge-brand { background: var(--brand-soft); color: var(--brand); }
.badge-accent { background: var(--accent-soft); color: var(--accent-h); }
.badge-teal { background: var(--teal-soft); color: #0C7A6D; }
.badge-on-dark { background: rgba(255,255,255,.14); color: #EAF2FC; }
.badge-line { background: #fff; border: 1px solid var(--line); color: var(--ink-2); }

/* ============ 专题海报区 ============ */
.topic-hero {
  position: relative;
  background: var(--brand-x);
  color: #fff;
  overflow: hidden;
}
.topic-hero::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 6px;
  background: repeating-linear-gradient(90deg, rgba(255,255,255,.22) 0 22px, transparent 22px 44px);
}
.topic-hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 56px;
  align-items: center;
  padding-top: 76px;
  padding-bottom: 92px;
}
.breadcrumb { font-size: 13.5px; color: rgba(255,255,255,.68); margin-bottom: 18px; }
.breadcrumb a { color: rgba(255,255,255,.86); }
.breadcrumb a:hover { color: #fff; text-decoration: underline; }
.breadcrumb span.sep { margin: 0 8px; opacity: .6; }
.breadcrumb em { font-style: normal; color: #fff; }

.topic-hero h1 {
  color: #fff;
  font-size: 46px;
  line-height: 1.18;
  margin-bottom: 20px;
  max-width: 15em;
}
.topic-hero-lead {
  font-size: 17px;
  line-height: 1.85;
  color: rgba(255,255,255,.82);
  max-width: 34em;
}
.topic-hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.topic-hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 28px;
  font-size: 14px;
  color: rgba(255,255,255,.78);
}
.topic-hero-points li { display: flex; align-items: center; gap: 8px; }
.topic-hero-points i { color: var(--teal); font-size: 12px; }

.topic-hero-media {
  margin: 0;
  border-radius: var(--r-panel);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.16);
  box-shadow: 0 18px 40px rgba(5,18,36,.45);
}
.topic-hero-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }

.topic-wave {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  width: 100%;
  height: 110px;
  z-index: 1;
  display: block;
}

/* ============ 数据条 ============ */
.stat-band { background: #fff; border-bottom: 1px solid var(--line); }
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 30px 0;
}
.stat-item { display: flex; align-items: baseline; gap: 12px; }
.stat-item .stat-num {
  font-size: 32px;
  font-weight: 700;
  color: var(--brand);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  letter-spacing: -.02em;
}
.stat-item .stat-num small { font-size: 15px; font-weight: 600; margin-left: 2px; }
.stat-item .stat-label { font-size: 14px; color: var(--text); line-height: 1.5; }

/* ============ 区块通用 ============ */
.section { padding: 88px 0; }
.section-tight { padding: 64px 0; }
.section-head { max-width: 760px; margin-bottom: 44px; }
.section-head h2 { font-size: 32px; margin-bottom: 14px; }
.section-head p { font-size: 16.5px; color: var(--text); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand);
  letter-spacing: .08em;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.rule-scale {
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line) 0 8px, transparent 8px 16px);
  margin: 0;
}

/* ============ 图文交替 ============ */
.feature-row {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 48px;
  align-items: center;
  padding: 56px 0;
}
.feature-row.is-reverse .feature-media { order: 2; }
.feature-row.is-reverse .feature-body { order: 1; }
.feature-media {
  border-radius: var(--r-card);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--sh-1);
}
.feature-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.feature-index {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  letter-spacing: .12em;
  margin-bottom: 14px;
}
.feature-index b { color: var(--accent); font-size: 15px; }
.feature-body h2 { font-size: 27px; margin-bottom: 14px; }
.feature-body > p { font-size: 16.5px; color: var(--text); margin-bottom: 20px; }
.feature-list { display: grid; gap: 12px; margin-bottom: 22px; }
.feature-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 15.5px;
  color: var(--ink-2);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 16px;
  box-shadow: var(--sh-1);
}
.feature-list i { color: var(--teal); font-size: 13px; margin-top: 5px; }

/* ============ 关联内容横滚 ============ */
.related { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.related-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 32px; }
.related-head h2 { font-size: 28px; }
.related-track {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding-bottom: 14px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.related-track::-webkit-scrollbar { height: 6px; }
.related-track::-webkit-scrollbar-thumb { background: var(--line); border-radius: 999px; }
.related-card {
  flex: 0 0 300px;
  scroll-snap-align: start;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  box-shadow: var(--sh-1);
  overflow: hidden;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}
.related-card:hover { transform: translateY(-3px); box-shadow: var(--sh-3); }
.related-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.related-card-body { padding: 18px 20px 20px; }
.related-card-body h3 { font-size: 17px; margin-bottom: 8px; }
.related-card-body p { font-size: 14.5px; color: var(--text); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ============ 表单 ============ */
.consult { background: var(--bg); }
.consult-panel {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 48px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-panel);
  box-shadow: var(--sh-2);
  padding: 48px;
}
.consult-copy h2 { font-size: 28px; margin-bottom: 14px; }
.consult-copy > p { font-size: 16px; color: var(--text); margin-bottom: 22px; }
.consult-points { display: grid; gap: 12px; }
.consult-points li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--ink-2); }
.consult-points i { color: var(--brand); font-size: 13px; margin-top: 5px; }

.form-grid { display: grid; gap: 18px; }
.field label { display: block; font-size: 14px; color: var(--ink-2); margin-bottom: 8px; font-weight: 600; }
.field label .req { color: var(--accent); margin-left: 4px; }
.field input,
.field textarea {
  width: 100%;
  min-height: 46px;
  padding: 11px 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 15.5px;
  color: var(--ink);
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}
.field textarea { min-height: 108px; resize: vertical; line-height: 1.7; }
.field input::placeholder,
.field textarea::placeholder { color: var(--muted); }
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(30,90,168,.16);
}
.form-actions { display: grid; gap: 12px; }
.form-note { font-size: 13px; color: var(--muted); line-height: 1.7; }
.form-error { font-size: 13px; color: var(--err); display: none; }
.form-error.is-on { display: block; }
.form-success {
  display: none;
  align-items: center;
  gap: 8px;
  font-size: 14.5px;
  color: #0C7A6D;
  background: var(--teal-soft);
  border-radius: 10px;
  padding: 12px 16px;
}
.form-success.is-on { display: flex; }

/* ============ 页脚 ============ */
.site-footer {
  background: var(--brand-x);
  color: #fff;
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.14);
}
.footer-brand .logo-mark { background: rgba(255,255,255,.14); }
.footer-brand .logo-text b { color: #fff; }
.footer-brand .logo-text span { color: rgba(255,255,255,.6); }
.footer-brand p { margin-top: 18px; font-size: 14.5px; line-height: 1.8; color: rgba(255,255,255,.72); max-width: 34em; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; font-weight: 600; }
.footer-col ul { display: grid; gap: 11px; }
.footer-col a { font-size: 14.5px; color: rgba(255,255,255,.72); transition: color .18s var(--ease); }
.footer-col a:hover { color: #fff; }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; font-size: 14.5px; color: rgba(255,255,255,.72); }
.footer-contact i { color: var(--teal); font-size: 13px; margin-top: 5px; }
.footer-contact a { color: rgba(255,255,255,.86); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding-top: 24px;
  font-size: 13.5px;
  color: rgba(255,255,255,.58);
}

/* ============ 移动端底部 Tab ============ */
.mobile-tabbar { display: none; }

/* ============ 响应式 ============ */
@media (max-width: 1279px) {
  .topic-hero h1 { font-size: 40px; }
}

@media (max-width: 1023px) {
  .container { padding: 0 24px; }
  .nav-main { gap: 0; }
  .nav-link { padding: 9px 9px; font-size: 14.5px; }
  .nav-actions .btn-ghost { display: none; }
  .topic-hero-grid { grid-template-columns: 1fr; gap: 40px; padding-top: 60px; padding-bottom: 80px; }
  .topic-hero h1 { font-size: 36px; max-width: none; }
  .feature-row { grid-template-columns: 1fr; gap: 28px; padding: 44px 0; }
  .feature-row.is-reverse .feature-media { order: 0; }
  .feature-row.is-reverse .feature-body { order: 0; }
  .consult-panel { grid-template-columns: 1fr; gap: 32px; padding: 36px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}

@media (max-width: 767px) {
  body { font-size: 16px; padding-bottom: calc(70px + env(safe-area-inset-bottom)); }
  .container { padding: 0 16px; }
  .nav-wrap { height: 56px; gap: 12px; }
  .site-header.is-scrolled .nav-wrap { height: 56px; }
  .nav-main {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 12px 16px 18px;
    box-shadow: var(--sh-2);
    margin-right: 0;
  }
  .nav-main.is-open { display: flex; }
  .nav-link { padding: 12px 10px; font-size: 15.5px; border-radius: 8px; }
  .nav-link.is-active::after { left: 10px; right: auto; width: 18px; bottom: 6px; }
  .nav-toggle { display: grid; place-items: center; }
  .nav-actions { margin-left: auto; gap: 8px; }
  .nav-actions .btn-accent { height: 36px; padding: 0 13px; font-size: 13.5px; }
  .logo-text span { font-size: 10.5px; letter-spacing: .12em; }

  .section { padding: 56px 0; }
  .section-tight { padding: 40px 0; }
  .section-head { margin-bottom: 28px; }
  .section-head h2 { font-size: 24px; }
  .topic-hero-grid { padding-top: 44px; padding-bottom: 64px; gap: 30px; }
  .topic-hero h1 { font-size: 30px; margin-bottom: 14px; }
  .topic-hero-lead { font-size: 15.5px; }
  .topic-hero-actions { gap: 10px; margin-top: 24px; }
  .topic-hero-actions .btn { flex: 1 1 auto; padding: 0 18px; }
  .topic-hero-points { font-size: 13.5px; gap: 8px 16px; }
  .topic-wave { height: 64px; }

  .stat-grid { grid-template-columns: 1fr 1fr; padding: 22px 0; gap: 16px; }
  .stat-item { flex-direction: column; gap: 2px; }
  .stat-item .stat-num { font-size: 26px; }

  .feature-row { padding: 36px 0; gap: 22px; }
  .feature-body h2 { font-size: 21px; }
  .feature-body > p { font-size: 15.5px; }
  .feature-list li { font-size: 14.5px; padding: 11px 14px; }

  .related-head { flex-direction: column; align-items: flex-start; gap: 10px; margin-bottom: 22px; }
  .related-head h2 { font-size: 22px; }
  .related-card { flex: 0 0 78%; }

  .consult-panel { padding: 24px 18px; border-radius: var(--r-card); }
  .consult-copy h2 { font-size: 22px; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; padding-bottom: 28px; }
  .footer-bottom { flex-direction: column; font-size: 12.5px; }

  .mobile-tabbar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    position: fixed;
    left: 0; right: 0; bottom: 0;
    z-index: 95;
    background: #fff;
    border-top: 1px solid var(--line);
    padding-bottom: env(safe-area-inset-bottom);
    box-shadow: 0 -4px 14px rgba(16,23,31,.06);
  }
  .tab-item {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    padding: 9px 4px 8px;
    font-size: 11px;
    color: var(--muted);
    transition: color .18s var(--ease);
  }
  .tab-item i { font-size: 19px; }
  .tab-item.is-active { color: var(--brand); font-weight: 600; }
  .tab-item.is-active::before {
    content: "";
    position: absolute;
    top: 0; left: 50%;
    transform: translateX(-50%);
    width: 26px; height: 3px;
    border-radius: 0 0 3px 3px;
    background: var(--brand);
  }
}

@media (max-width: 479px) {
  .topic-hero h1 { font-size: 26px; }
  .topic-hero-actions { flex-direction: column; }
  .topic-hero-actions .btn { width: 100%; }
  .stat-grid { grid-template-columns: 1fr; gap: 12px; }
  .stat-item { flex-direction: row; align-items: baseline; }
  .related-card { flex: 0 0 86%; }
  .nav-actions .btn-accent { display: none; }
}