/* roulang page: index */
:root{
  --brand:#1A5CB8;--brand-dark:#134488;--brand-soft:#E9F1FC;--brand-line:#BFD5F2;
  --accent:#E07A2F;--accent-soft:#FDF1E7;
  --ink:#0F1F35;--text:#3C4A5E;--muted:#6B7A90;--line:#E4EAF2;
  --page:#F6F8FB;--card:#FFFFFF;
  --ok:#1E9E62;--warn:#D9544D;--disabled:#C3CBD6;
  --footer:#101E33;
  --r-lg:16px;--r-md:14px;--r-sm:10px;--r-pill:999px;--r-img:12px;
  --sh1:0 1px 2px rgba(16,32,64,.05);
  --sh2:0 6px 20px rgba(16,32,64,.07);
  --sh3:0 14px 34px rgba(16,32,64,.10);
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--page);color:var(--text);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:16px;line-height:1.8;font-weight:400}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35}
h1{font-size:40px;line-height:1.25}
h2{font-size:28px;line-height:1.35}
h3{font-size:20px;line-height:1.45;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;height:auto;border-radius:var(--r-img)}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid rgba(26,92,184,.4);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.sec{padding:var(--sec) 0}
.sec-tight{padding:56px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.sec-head .lead{margin-top:10px;font-size:15px;color:var(--muted);max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.02em;color:var(--brand);background:var(--brand-soft);border:1px solid var(--brand-line);padding:4px 12px;border-radius:var(--r-pill);margin-bottom:14px}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block}
.more-link{font-size:14px;font-weight:600;white-space:nowrap}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-sm);font-size:15px;font-weight:600;border:1px solid transparent;transition:background-color .18s ease,color .18s ease,box-shadow .18s ease,transform .12s ease;text-decoration:none}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh1)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;box-shadow:var(--sh2)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand-line)}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-dark)}
.btn-ghost{background:transparent;color:var(--text)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{background:#EDF1F6;color:var(--disabled);box-shadow:none;cursor:not-allowed;border-color:var(--line)}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;padding:14px 0;transition:padding .2s ease,background-color .2s ease}
.site-header.stuck{padding:8px 0;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}
.nav-shell{display:flex;align-items:center;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh2);padding:10px 14px}
.site-header.stuck .nav-shell{box-shadow:var(--sh1)}
.brand{display:flex;align-items:center;gap:10px;padding-right:18px;border-right:1px solid var(--line);text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{width:38px;height:38px;border-radius:10px;background:linear-gradient(140deg,var(--brand) 0%,#2C77D6 100%);display:flex;align-items:center;justify-content:center;color:#fff;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:16px;color:var(--ink);letter-spacing:.01em}
.brand-text span{font-size:11px;color:var(--muted);letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:8px;flex:1;min-width:0}
.nav-item{display:flex;align-items:center;gap:8px;padding:8px 12px;border-radius:var(--r-sm);color:var(--text);font-size:13px;font-weight:600;border:1px solid transparent;transition:background-color .18s ease,color .18s ease,transform .18s ease;text-decoration:none;white-space:nowrap}
.nav-item svg{width:18px;height:18px;color:var(--muted);transition:color .18s ease}
.nav-item:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-1px);text-decoration:none}
.nav-item:hover svg{color:var(--brand)}
.nav-item.active{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-line)}
.nav-item.active svg{color:var(--brand)}
.nav-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.nav-toggle{display:none;width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--line);align-items:center;justify-content:center;background:#fff}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.drawer{display:none;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh3);margin-top:10px;padding:16px}
.drawer.open{display:block}
.drawer-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.drawer-card{display:flex;flex-direction:column;gap:6px;padding:14px;border:1px solid var(--line);border-radius:var(--r-md);color:var(--text);font-size:14px;font-weight:600;text-decoration:none}
.drawer-card small{font-size:12px;color:var(--muted);font-weight:400}
.drawer-card.active{border-color:var(--brand-line);background:var(--brand-soft);color:var(--brand)}
.drawer-cta{margin-top:14px;display:grid;gap:10px}

/* Hero */
.hero{position:relative;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(96deg,rgba(255,255,255,.90) 0%,rgba(255,255,255,.78) 48%,rgba(255,255,255,.34) 100%)}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(26,92,184,.35) 1px,transparent 1px);background-size:22px 22px;opacity:.06;z-index:1}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.35fr .95fr;gap:48px;align-items:center;min-height:520px;padding:64px 0}
.hero h1{max-width:640px}
.hero h1 em{font-style:normal;color:var(--brand);position:relative}
.hero .sub{margin-top:18px;font-size:17px;line-height:1.85;color:var(--text);max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-trust{margin-top:16px;font-size:12.5px;color:var(--muted)}
.hero-side{display:grid;gap:12px}
.mini-card{background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:var(--r-md);padding:16px 18px;box-shadow:var(--sh2)}
.mini-card .mini-top{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted)}
.mini-card .mini-num{font-size:26px;font-weight:700;color:var(--ink);line-height:1.3;margin-top:4px}
.mini-card .mini-num small{font-size:13px;font-weight:500;color:var(--muted);margin-left:4px}
.mini-bar{height:4px;border-radius:999px;background:#EDF2F9;overflow:hidden;margin-top:10px}
.mini-bar i{display:block;height:100%;border-radius:999px;background:var(--brand)}

/* KPI */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh2);padding:22px;position:relative;overflow:hidden;transition:transform .18s ease,box-shadow .18s ease}
.kpi::after{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--brand);opacity:0;transition:opacity .18s ease}
.kpi:hover{transform:translateY(-2px);box-shadow:var(--sh3)}
.kpi:hover::after{opacity:1}
.kpi .kpi-num{font-size:44px;font-weight:700;color:var(--ink);line-height:1.1}
.kpi .kpi-num small{font-size:15px;font-weight:600;color:var(--muted);margin-left:4px}
.kpi .kpi-label{margin-top:8px;font-size:13px;color:var(--muted)}
.kpi .kpi-foot{margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);font-size:12px;color:var(--muted)}
.badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:600;padding:3px 10px;border-radius:var(--r-pill);letter-spacing:.02em}
.badge-ok{background:#E8F6EF;color:var(--ok)}
.badge-neutral{background:#EEF2F7;color:var(--muted)}
.badge-accent{background:var(--accent-soft);color:var(--accent)}

/* 服务矩阵 */
.matrix{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.m-card{grid-column:span 4;background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh2);padding:24px;display:flex;flex-direction:column;gap:14px;position:relative;overflow:hidden;transition:transform .18s ease,box-shadow .18s ease}
.m-card::after{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--brand);opacity:0;transition:opacity .18s ease}
.m-card:hover{transform:translateY(-2px);box-shadow:var(--sh3)}
.m-card:hover::after{opacity:1}
.m-card.wide{grid-column:span 6;padding:28px}
.m-card .ico{width:44px;height:44px;border-radius:12px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;border:1px solid var(--brand-line)}
.m-card.wide .ico{background:var(--brand);border-color:var(--brand);color:#fff}
.m-card p.desc{font-size:14.5px;color:var(--text)}
.m-card ul.pts{display:grid;gap:8px;font-size:14px;color:var(--text)}
.m-card ul.pts li{position:relative;padding-left:18px}
.m-card ul.pts li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--brand-line)}
.m-card .go{margin-top:auto;font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}

/* 对比 */
.cmp{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh2);overflow:hidden}
.cmp-head,.cmp-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:0}
.cmp-head{background:#F3F7FC;border-bottom:1px solid var(--line);font-size:13px;font-weight:700;color:var(--ink)}
.cmp-head div{padding:14px 20px}
.cmp-row{border-bottom:1px solid var(--line)}
.cmp-row:nth-child(even){background:#FCFDFE}
.cmp-row:last-child{border-bottom:0}
.cmp-cell{padding:18px 20px;font-size:14.5px;display:flex;align-items:flex-start;gap:10px}
.cmp-cell.alt{color:var(--muted)}
.cmp-cell.hl{color:var(--ink);font-weight:600;background:rgba(233,241,252,.5)}
.cmp-cell.note{font-size:13.5px;color:var(--muted)}
.tick{width:18px;height:18px;border-radius:50%;background:var(--brand-soft);color:var(--brand);flex:0 0 auto;display:flex;align-items:center;justify-content:center;margin-top:3px}
.cmp-cell::before{content:none}

/* 流程 */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);padding:22px;box-shadow:var(--sh1);position:relative}
.step .step-no{font-size:13px;font-weight:700;color:var(--brand);background:var(--brand-soft);border:1px solid var(--brand-line);border-radius:var(--r-pill);display:inline-block;padding:2px 12px}
.step h3{margin-top:12px;font-size:17px}
.step p{margin-top:8px;font-size:14px;color:var(--text)}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh2);overflow:hidden;color:var(--text);text-decoration:none;transition:transform .18s ease,box-shadow .18s ease}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh3);text-decoration:none;color:var(--text)}
.news-thumb{position:relative;aspect-ratio:16/10;background:var(--brand-soft);overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .24s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body .ex{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;padding-top:12px;border-top:1px dashed var(--line);display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--muted)}
.tag{display:inline-flex;align-items:center;font-size:13px;letter-spacing:.02em;padding:3px 10px;border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand);border:1px solid var(--brand-line);font-weight:600}
.empty-state{grid-column:1/-1;border:1px dashed var(--brand-line);background:#FBFDFF;border-radius:var(--r-md);padding:44px 24px;text-align:center}
.empty-state .ei{width:48px;height:48px;margin:0 auto 14px;border-radius:14px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center}
.empty-state p{font-size:14.5px;color:var(--muted);margin-bottom:16px}

/* 分类入口 */
.cat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.cat-card{display:grid;grid-template-columns:180px 1fr;gap:0;background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh2);overflow:hidden;text-decoration:none;color:var(--text);transition:transform .18s ease,box-shadow .18s ease}
.cat-card:hover{transform:translateY(-2px);box-shadow:var(--sh3);text-decoration:none;color:var(--text)}
.cat-card .cat-img{aspect-ratio:16/10;height:100%;overflow:hidden;background:var(--brand-soft)}
.cat-card .cat-img img{width:100%;height:100%;object-fit:cover;border-radius:0}
.cat-card .cat-body{padding:20px;display:flex;flex-direction:column;gap:10px}
.cat-card .cat-body h3{font-size:18px}
.cat-card .cat-body p{font-size:14px;color:var(--muted)}
.cat-card .cat-body .go{margin-top:auto;font-size:14px;font-weight:600}

/* 评价 */
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.voice{background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);padding:24px;box-shadow:var(--sh1)}
.voice p{font-size:14.5px}
.voice .who{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;gap:10px}
.voice .who b{font-size:14px;color:var(--ink)}
.voice .who span{font-size:12.5px;color:var(--muted)}
.avatar{width:36px;height:36px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;border:1px solid var(--brand-line)}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh1);overflow:hidden;transition:box-shadow .18s ease,border-color .18s ease}
.faq-item.open{border-color:var(--brand-line);box-shadow:var(--sh2)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink)}
.faq-q .chev{width:28px;height:28px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;flex:0 0 auto;transition:transform .22s ease}
.faq-item.open .chev{transform:rotate(180deg)}
.faq-a{display:none;padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--text)}
.faq-item.open .faq-a{display:block}

/* 表单 CTA */
.cta-wrap{display:grid;grid-template-columns:1fr 1fr;gap:32px;background:linear-gradient(180deg,#F2F7FD 0%,#FFFFFF 100%);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh2);padding:36px}
.cta-list{display:grid;gap:14px;margin-top:20px}
.cta-list li{display:flex;gap:10px;font-size:14.5px}
.contact-box{margin-top:24px;padding-top:20px;border-top:1px solid var(--line);display:grid;gap:8px;font-size:14px}
.contact-box b{color:var(--ink)}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh1);padding:24px}
.field{display:grid;gap:6px;margin-bottom:16px}
.field label{font-size:13px;color:var(--muted)}
.field input,.field select,.field textarea{width:100%;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);background:#FCFDFF;padding:0 14px;font-size:14.5px;color:var(--ink);transition:border-color .18s ease,box-shadow .18s ease}
.field textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.field select{appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%236B7A90' stroke-width='2'><path d='M6 9l6 6 6-6'/></svg>");background-repeat:no-repeat;background-position:right 14px center}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(26,92,184,.12)}
.field .hint{font-size:12px;color:var(--muted)}
.field.error input,.field.error select,.field.error textarea{border-color:var(--warn)}
.field .err{display:none;font-size:12px;color:var(--warn)}
.field.error .err{display:block}
.form-ok{display:none;text-align:center;padding:28px 10px}
.form-ok.show{display:block}
.form-ok .ok-ico{width:52px;height:52px;margin:0 auto 14px;border-radius:50%;background:#E8F6EF;color:var(--ok);display:flex;align-items:center;justify-content:center}

/* 页脚 */
.site-footer{background:var(--footer);color:#AFBCCD;padding:64px 0 0;margin-top:var(--sec)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:40px}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.site-footer p{font-size:13.5px;line-height:1.9;color:#93A3B8}
.site-footer ul{display:grid;gap:10px}
.site-footer ul a{color:#AFBCCD;font-size:13.5px}
.site-footer ul a:hover{color:#fff;text-decoration:none}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-brand .brand-mark{background:rgba(255,255,255,.08)}
.foot-brand b{color:#fff;font-size:16px}
.foot-line{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:13px;color:#8394AA}

@media (max-width:1199px){
  .container{max-width:1140px}
  .kpi .kpi-num{font-size:38px}
}
@media (max-width:991px){
  :root{--sec:64px}
  h1{font-size:32px}
  h2{font-size:24px}
  .nav-links{display:none}
  .nav-actions{display:none}
  .nav-toggle{display:flex}
  .hero-inner{grid-template-columns:1fr;gap:32px;min-height:0;padding:48px 0}
  .kpi-grid{grid-template-columns:repeat(2,1fr)}
  .m-card,.m-card.wide{grid-column:span 6}
  .flow{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .cat-grid{grid-template-columns:1fr}
  .voice-grid{grid-template-columns:1fr}
  .cta-wrap{grid-template-columns:1fr;padding:26px}
  .foot-grid{grid-template-columns:repeat(2,1fr)}
  .cmp-head{display:none}
  .cmp-row{grid-template-columns:1fr}
  .cmp-cell{border-bottom:1px dashed var(--line)}
  .cmp-cell::before{content:attr(data-label);display:block;font-size:12px;color:var(--muted);width:64px;flex:0 0 64px;padding-top:2px}
  .cmp-cell.hl{background:var(--brand-soft)}
}
@media (max-width:767px){
  :root{--sec:44px}
  .container{padding:0 16px}
  h1{font-size:28px;line-height:1.3}
  h2{font-size:22px}
  h3{font-size:18px}
  .brand{border-right:0;padding-right:0}
  .brand-text span{display:none}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .matrix .m-card,.matrix .m-card.wide{grid-column:span 12}
  .flow{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .cat-card{grid-template-columns:1fr}
  .cat-card .cat-img{aspect-ratio:16/10;height:auto}
  .btn{width:100%}
  .hero-cta .btn{width:100%}
  .kpi-grid{gap:16px}
  .kpi .kpi-num{font-size:32px}
  .kpi{padding:18px}
}
@media (max-width:520px){
  h1{font-size:26px}
  .foot-grid{grid-template-columns:1fr}
  .drawer-grid{grid-template-columns:1fr}
  .cta-wrap{padding:20px}
  .kpi .kpi-num{font-size:28px}
}

/* roulang page: article */
:root{
  --primary:#1A5CB8;
  --primary-dark:#134488;
  --primary-soft:#E9F1FC;
  --primary-line:#BFD5F2;
  --accent:#E07A2F;
  --accent-soft:#FDF1E7;
  --ink:#0F1F35;
  --text:#3C4A5E;
  --muted:#6B7A90;
  --line:#E4EAF2;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --success:#1E9E62;
  --warn:#D9544D;
  --footer:#101E33;
  --r-lg:16px;
  --r-md:14px;
  --r-sm:10px;
  --sh1:0 1px 2px rgba(16,32,64,.05);
  --sh2:0 6px 20px rgba(16,32,64,.07);
  --sh3:0 14px 34px rgba(16,32,64,.10);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;}
a:hover{color:var(--primary-dark);}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid rgba(26,92,184,.4);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{font-size:28px;line-height:1.35;}
.section-head p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--muted);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.02em;color:var(--primary);font-weight:600;}
.eyebrow::before{content:"";width:16px;height:2px;border-radius:2px;background:var(--primary);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  padding:12px 0;
  background:rgba(246,248,251,.9);
  backdrop-filter:blur(8px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,padding .2s ease;
}
.site-header.is-stuck{background:rgba(255,255,255,.96);border-bottom-color:var(--line);padding:8px 0;}
.nav-panel{
  display:flex;align-items:center;gap:16px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh2);
  padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);font-weight:700;font-size:16px;line-height:1.2;}
.brand:hover{color:var(--primary);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg,var(--primary),#2A73D2);
  color:#fff;box-shadow:var(--sh1);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center;}
.nav-item{
  display:flex;align-items:center;gap:8px;
  padding:8px 12px;border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:13px;letter-spacing:.02em;color:var(--text);
  transition:background .18s ease,color .18s ease,transform .18s ease,border-color .18s ease;
}
.nav-item svg{width:18px;height:18px;color:var(--muted);flex:0 0 auto;transition:color .18s ease;}
.nav-item:hover{background:var(--primary-soft);color:var(--primary);transform:translateY(-1px);}
.nav-item:hover svg{color:var(--primary);}
.nav-item.active{background:var(--primary-soft);color:var(--primary-dark);border-color:var(--primary-line);font-weight:600;}
.nav-item.active svg{color:var(--primary);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;margin-left:auto;
  align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  color:var(--ink);cursor:pointer;transition:background .18s ease,border-color .18s ease;
}
.nav-toggle:hover{background:var(--primary-soft);border-color:var(--primary-line);}
.nav-toggle svg{width:20px;height:20px;}
.mobile-drawer{display:none;}
.mobile-drawer.open{display:block;margin-top:10px;}
.drawer-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh2);padding:14px;
}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.drawer-grid .nav-item{
  flex-direction:column;align-items:flex-start;gap:8px;
  padding:14px;border:1px solid var(--line);border-radius:var(--r-md);font-size:14px;
}
.drawer-grid .nav-item svg{width:20px;height:20px;}
.drawer-cta{display:grid;grid-template-columns:1fr;gap:10px;margin-top:12px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 20px;
  border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh2);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh3);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh1);}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary-line);}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-dark);}
.btn-sm{height:38px;padding:0 14px;font-size:13px;}
.btn-block{width:100%;}
.text-link{font-size:14px;font-weight:600;color:var(--primary);}
.text-link:hover{color:var(--primary-dark);text-decoration:underline;text-underline-offset:3px;}

/* ============ 文章头部 ============ */
.post-hero{
  position:relative;padding:46px 0 42px;
  background-image:linear-gradient(180deg,rgba(255,255,255,.94),rgba(246,248,251,.98)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:#C7D2E0;}
.breadcrumb .current{color:var(--text);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary);
  font-size:13px;letter-spacing:.02em;font-weight:600;
}
.badge:hover{background:var(--primary-line);color:var(--primary-dark);}
.badge-accent{background:var(--accent-soft);color:#B25C1B;}
.post-title{margin-top:16px;font-size:40px;line-height:1.25;font-weight:700;max-width:920px;}
.post-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:18px;font-size:13px;color:var(--muted);}
.post-meta .dot{width:1px;height:12px;background:#D6DEEA;}
.post-meta .meta-strong{color:var(--text);font-weight:600;}

/* ============ 文章布局 ============ */
.article-wrap{padding:56px 0 72px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 288px;gap:36px;align-items:start;}
.article-main{max-width:760px;width:100%;justify-self:center;min-width:0;}
.article-body{font-size:16px;line-height:1.95;color:var(--text);}
.article-body p{margin:0 0 20px;}
.article-body h2{position:relative;font-size:22px;line-height:1.5;font-weight:700;color:var(--ink);margin:40px 0 16px;padding-left:14px;}
.article-body h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--primary);}
.article-body h3{font-size:18px;line-height:1.5;font-weight:600;color:var(--ink);margin:28px 0 12px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:24px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:8px;line-height:1.9;}
.article-body blockquote{
  margin:26px 0;padding:16px 20px;
  background:var(--primary-soft);color:var(--ink);
  border-left:4px solid var(--primary);border-radius:0 12px 12px 0;
  font-size:15px;line-height:1.9;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:26px auto;height:auto;}
.article-body figure{margin:26px 0;}
.article-body figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--muted);}
.article-body a{color:var(--primary);border-bottom:1px solid var(--primary-line);}
.article-body a:hover{color:var(--primary-dark);border-bottom-color:var(--primary-dark);}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;border:1px solid var(--line);border-radius:12px;overflow:hidden;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top;}
.article-body th{background:var(--primary-soft);color:var(--ink);font-weight:600;}
.article-body strong{color:var(--ink);}
.article-body hr{margin:32px 0;border:none;border-top:1px solid var(--line);}
.article-body code{background:#F1F5FA;border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:14px;color:#1B4E8F;}

.empty-state{
  border:1.5px dashed var(--primary-line);border-radius:var(--r-lg);
  background:#fff;padding:44px 28px;text-align:center;
}
.empty-state svg{width:38px;height:38px;color:var(--primary);margin:0 auto 14px;}
.empty-state h3{font-size:18px;margin-bottom:8px;}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:20px;}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:96px;display:grid;gap:16px;}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh1);padding:18px;}
.side-card h3{font-size:15px;margin-bottom:12px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--primary);}
.toc-list{display:grid;gap:4px;}
.toc-list a{display:block;padding:7px 10px;border-radius:8px;font-size:13px;line-height:1.6;color:var(--text);transition:background .18s ease,color .18s ease;}
.toc-list a:hover{background:var(--primary-soft);color:var(--primary);}
.toc-list .toc-empty{font-size:13px;color:var(--muted);padding:6px 10px;}
.side-links{display:grid;gap:8px;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:10px 12px;border:1px solid var(--line);border-radius:var(--r-sm);
  font-size:13px;color:var(--text);transition:background .18s ease,border-color .18s ease,color .18s ease,transform .18s ease;
}
.side-links a:hover{background:var(--primary-soft);border-color:var(--primary-line);color:var(--primary-dark);transform:translateY(-1px);}
.side-links svg{width:15px;height:15px;color:var(--muted);flex:0 0 auto;}
.side-note{font-size:13px;line-height:1.8;color:var(--muted);}

/* ============ 相关推荐 ============ */
.rel-block{margin-top:52px;padding-top:32px;border-top:1px solid var(--line);}
.rel-block h2{font-size:20px;margin-bottom:18px;}
.rel-list{display:grid;gap:12px;}
.rel-card{
  display:grid;grid-template-columns:104px minmax(0,1fr);gap:16px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:12px;box-shadow:var(--sh1);color:inherit;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh3);border-color:var(--primary-line);color:inherit;}
.rel-thumb{display:block;border-radius:10px;overflow:hidden;aspect-ratio:16/10;background:var(--primary-soft);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease;}
.rel-card:hover .rel-thumb img{transform:scale(1.03);}
.rel-body{min-width:0;}
.rel-body b{display:block;font-size:15px;font-weight:600;color:var(--ink);line-height:1.55;margin-bottom:6px;}
.rel-body em{font-style:normal;font-size:13px;color:var(--muted);}
.back-row{margin-top:24px;}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh1);overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;}
.faq-item.open{border-color:var(--primary-line);box-shadow:var(--sh2);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:transparent;border:none;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink);text-align:left;line-height:1.6;
}
.faq-arrow{
  flex:0 0 auto;width:28px;height:28px;border-radius:999px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);
  transition:transform .24s ease,background .18s ease;
}
.faq-arrow svg{width:15px;height:15px;}
.faq-item.open .faq-arrow{transform:rotate(180deg);background:var(--primary);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--text);}

/* ============ CTA / 表单 ============ */
.cta-band{
  background:var(--primary-soft);border:1px solid var(--primary-line);border-radius:var(--r-lg);
  padding:28px 30px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-band h2{font-size:22px;line-height:1.4;}
.cta-band p{margin-top:8px;font-size:15px;color:var(--text);}
.feedback-grid{display:grid;grid-template-columns:minmax(0,1fr) 420px;gap:36px;align-items:start;}
.feedback-points{display:grid;gap:14px;margin-top:22px;}
.feedback-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.8;}
.feedback-points svg{width:20px;height:20px;color:var(--success);flex:0 0 auto;margin-top:4px;}
.feedback-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh2);padding:26px;}
.feedback-card h3{font-size:18px;margin-bottom:8px;}
.feedback-card > p{font-size:14px;color:var(--muted);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--text);margin-bottom:6px;font-weight:600;}
.field input,.field select,.field textarea{
  width:100%;height:44px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:#FCFDFF;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field textarea{height:auto;padding:12px 14px;line-height:1.7;resize:vertical;}
.field select{
  appearance:none;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7A90' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:40px;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(26,92,184,.12);
}
.field input::placeholder,.field textarea::placeholder{color:#9AA8BB;}
.form-note{margin-top:12px;font-size:12px;line-height:1.7;color:var(--muted);}
.form-success{
  border:1px solid #C7E8D6;background:#F2FBF6;border-radius:var(--r-md);padding:24px;
}
.form-success h3{margin-bottom:8px;color:#146B44;}
.form-success p{font-size:14px;line-height:1.85;color:#2C5B45;}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer);color:#C6D2E4;margin-top:0;}
.site-footer .container{padding-top:64px;padding-bottom:28px;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;margin-bottom:14px;}
.foot-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none;}
.site-footer p{font-size:14px;line-height:1.85;color:#93A5BE;}
.site-footer h4{font-size:14px;color:#fff;margin-bottom:14px;font-weight:600;letter-spacing:.02em;}
.site-footer ul{display:grid;gap:10px;}
.site-footer li{font-size:14px;color:#93A5BE;line-height:1.7;}
.site-footer ul a{color:#C6D2E4;font-size:14px;}
.site-footer ul a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.foot-line{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7E90A9;
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-main{max-width:760px;justify-self:start;}
  .article-side{position:static;grid-template-columns:1fr 1fr;}
  .feedback-grid{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:1199px){
  .container{max-width:1140px;}
}
@media (max-width:991px){
  .section{padding:64px 0;}
  .nav-links,.nav-actions{display:none;}
  .nav-toggle{display:inline-flex;}
  .post-title{font-size:32px;}
  .article-wrap{padding:44px 0 56px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .post-hero{padding:32px 0 30px;}
  .post-title{font-size:28px;}
  .section-head h2{font-size:22px;}
  .article-body h2{font-size:20px;}
  .article-side{grid-template-columns:1fr;}
  .rel-card{grid-template-columns:88px minmax(0,1fr);gap:12px;}
  .cta-band{padding:22px;flex-direction:column;align-items:flex-start;}
  .cta-band .btn{width:100%;}
  .feedback-card{padding:20px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .section{padding:44px 0;}
  .brand-text{font-size:15px;}
  .brand-mark{width:32px;height:32px;}
  .post-title{font-size:26px;}
  .post-meta{gap:8px;font-size:12px;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-line{flex-direction:column;align-items:flex-start;}
  .drawer-grid{grid-template-columns:1fr;}
  .btn{width:100%;}
  .nav-toggle{width:40px;}
}

/* roulang page: category1 */
:root{
  --primary:#1A5CB8;
  --primary-dark:#134488;
  --primary-soft:#E9F1FC;
  --primary-line:#BFD5F2;
  --accent:#E07A2F;
  --accent-soft:#FDF1E7;
  --title:#0F1F35;
  --text:#3C4A5E;
  --muted:#6B7A90;
  --line:#E4EAF2;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --success:#1E9E62;
  --warn:#D9544D;
  --disabled:#C3CBD6;
  --foot:#101E33;
  --r-lg:16px;
  --r-md:14px;
  --r-sm:10px;
  --r-pill:999px;
  --sh1:0 1px 2px rgba(16,32,64,.05);
  --sh2:0 6px 20px rgba(16,32,64,.07);
  --sh3:0 14px 34px rgba(16,32,64,.10);
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,text-underline-offset .18s ease}
a:hover{color:var(--primary-dark);text-decoration:underline;text-underline-offset:3px}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid rgba(26,92,184,.35);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  padding:12px 0;
  background:rgba(246,248,251,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%) blur(6px);
}
.nav-panel{
  position:relative;
  display:flex;
  align-items:center;
  gap:16px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh2);
  padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--title)}
.brand:hover{text-decoration:none;color:var(--title)}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:var(--r-sm);
  background:var(--primary-soft);color:var(--primary);
  border:1px solid var(--primary-line);
  flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-item{
  display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:8px 14px;border-radius:var(--r-sm);
  font-size:12px;line-height:1.4;letter-spacing:.02em;
  color:var(--text);
  border:1px solid transparent;
  transition:background .18s ease,color .18s ease,transform .18s ease,border-color .18s ease;
}
.nav-item svg{width:18px;height:18px;color:var(--muted);transition:color .18s ease}
.nav-item:hover{background:var(--primary-soft);color:var(--primary);text-decoration:none;transform:translateY(-1px);border-color:var(--primary-line)}
.nav-item:hover svg{color:var(--primary)}
.nav-item.active{background:var(--primary-soft);color:var(--primary);border-color:var(--primary-line);font-weight:600}
.nav-item.active svg{color:var(--primary)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:var(--r-sm);
  background:var(--primary-soft);border:1px solid var(--primary-line);
  color:var(--primary);cursor:pointer;
}
.nav-toggle svg{width:20px;height:20px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh1)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh1)}
.btn-ghost{background:var(--card);color:var(--primary);border-color:var(--primary-line)}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary-dark)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 15px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{background:var(--disabled);color:#fff;box-shadow:none;cursor:not-allowed}

/* ---------- 首屏 ---------- */
.page-hero{padding-top:36px}
.hero-card{
  display:flex;align-items:flex-start;justify-content:space-between;gap:36px;
  padding:40px;
  border:1px solid var(--line);
  border-radius:20px;
  background-image:linear-gradient(100deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.92) 52%,rgba(233,241,252,.86) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center right;
  box-shadow:var(--sh2);
}
.hero-main{max-width:660px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px;letter-spacing:.02em}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span.sep{color:var(--disabled)}
.hero-card h1{font-size:40px;line-height:1.25;font-weight:700;color:var(--title);letter-spacing:-.01em}
.hero-sub{margin-top:14px;font-size:16px;line-height:1.8;color:var(--text);max-width:560px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:13px;letter-spacing:.02em;
  background:var(--primary-soft);color:var(--primary);
  border:1px solid var(--primary-line);
}
.tag-accent{background:var(--accent-soft);color:var(--accent);border-color:#F2D6BB}
.tag-plain{background:#fff;color:var(--muted);border-color:var(--line)}
.hero-stats{
  flex:0 0 236px;
  display:grid;gap:12px;
  padding:20px;
  background:rgba(255,255,255,.94);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh1);
}
.hero-stats li{display:flex;flex-direction:column;gap:2px;padding-bottom:12px;border-bottom:1px dashed var(--line)}
.hero-stats li:last-child{padding-bottom:0;border-bottom:0}
.stat-num{font-size:30px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.2;letter-spacing:-.01em}
.stat-label{font-size:13px;color:var(--muted);letter-spacing:.02em}

/* ---------- 主体布局 ---------- */
.section{padding-top:var(--sec)}
.section-tight{padding-top:56px}
.cat-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:40px;align-items:start}
.toc{
  position:sticky;top:104px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh1);
  padding:18px 16px;
}
.toc-title{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.06em;margin-bottom:12px}
.toc-list{display:grid;gap:4px}
.toc-list a{
  display:block;padding:9px 12px;border-radius:var(--r-sm);
  font-size:14px;color:var(--text);line-height:1.5;
  border-left:3px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.toc-list a:hover{background:var(--primary-soft);color:var(--primary);text-decoration:none}
.toc-list a.active{background:var(--primary-soft);color:var(--primary);font-weight:600;border-left-color:var(--primary)}
.toc-note{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);font-size:13px;color:var(--muted);line-height:1.7}

.cat-content{display:grid;gap:24px}
.guide-block{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh2);
  padding:32px;
  scroll-margin-top:120px;
}
.block-title{display:flex;align-items:center;gap:12px}
.block-title::before{
  content:"";flex:0 0 auto;
  width:4px;height:22px;border-radius:2px;background:var(--primary);
}
.block-title h2{font-size:28px;line-height:1.35;font-weight:700;color:var(--title)}
.block-lead{margin-top:16px;font-size:16px;line-height:1.85;color:var(--text)}
.block-index{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:28px;height:28px;padding:0 8px;border-radius:var(--r-pill);
  background:var(--primary-soft);color:var(--primary);
  font-size:13px;font-weight:600;font-variant-numeric:tabular-nums;
}

.point-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:22px}
.point-card{
  position:relative;
  background:#FBFCFE;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:20px 18px 18px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  overflow:hidden;
}
.point-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--primary);opacity:0;transition:opacity .18s ease;
}
.point-card:hover{transform:translateY(-2px);box-shadow:var(--sh3);border-color:var(--primary-line)}
.point-card:hover::before{opacity:1}
.point-card h3{font-size:18px;line-height:1.45;font-weight:600;color:var(--title);margin-bottom:8px}
.point-card p{font-size:15px;line-height:1.8;color:var(--text)}
.point-card .tag{margin-top:12px}
.point-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:var(--r-sm);
  background:var(--primary-soft);color:var(--primary);
  border:1px solid var(--primary-line);
  margin-bottom:12px;
}
.point-icon svg{width:18px;height:18px}

.figure{margin-top:24px}
.figure-frame{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);background:var(--primary-soft)}
.figure-frame img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .24s ease}
.figure-frame:hover img{transform:scale(1.03)}
.figure figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--muted)}

/* 步骤 */
.step-list{display:grid;gap:14px;margin-top:22px;counter-reset:step}
.step-list li{
  position:relative;
  padding:16px 18px 16px 62px;
  background:#FBFCFE;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.step-list li:hover{border-color:var(--primary-line);box-shadow:var(--sh2)}
.step-list li::before{
  counter-increment:step;
  content:counter(step,decimal-leading-zero);
  position:absolute;left:18px;top:16px;
  width:30px;height:30px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary);color:#fff;
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.step-list strong{display:block;font-size:16px;color:var(--title);font-weight:600;margin-bottom:2px}
.step-list span{font-size:15px;color:var(--text)}

/* 表格化对照条 */
.mini-bar{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  margin-top:22px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
}
.mini-bar li{background:#FBFCFE;padding:18px 16px;text-align:center}
.mini-bar .bar-num{display:block;font-size:24px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.3}
.mini-bar .bar-label{font-size:13px;color:var(--muted);letter-spacing:.02em}

/* FAQ */
.faq-wrap{display:grid;gap:12px;margin-top:26px}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:var(--primary-line)}
.faq-item.open{box-shadow:var(--sh2);border-color:var(--primary-line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;
  background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--title);line-height:1.6;
}
.faq-arrow{
  flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:50%;
  background:var(--primary-soft);color:var(--primary);
  transition:transform .24s ease,background .18s ease;
}
.faq-arrow svg{width:15px;height:15px}
.faq-item.open .faq-arrow{transform:rotate(180deg);background:var(--primary);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:400px}
.faq-a p{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--text)}

/* CTA 带 */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:28px 32px;
  background:var(--primary-soft);
  border:1px solid var(--primary-line);
  border-radius:var(--r-lg);
}
.cta-band h2{font-size:22px;line-height:1.45;font-weight:700;color:var(--title)}
.cta-band p{margin-top:8px;font-size:15px;line-height:1.8;color:var(--text);max-width:660px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--sec);
  background:var(--foot);
  color:#C6D2E4;
  padding:56px 0 24px;
  border-top:1px solid rgba(255,255,255,.08);
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:14px}
.foot-brand .brand-mark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);color:#8FB8EE}
.foot-brand b{font-size:17px;font-weight:700;letter-spacing:.01em}
.site-footer p{font-size:14px;line-height:1.9;color:#9FB0C8;max-width:360px}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.site-footer ul{display:grid;gap:10px}
.site-footer ul li{font-size:14px;line-height:1.7;color:#9FB0C8}
.site-footer ul li a{color:#C6D2E4}
.site-footer ul li a:hover{color:#fff}
.foot-line{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  margin-top:36px;padding-top:18px;
  border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;color:#8A9CB6;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{max-width:1140px}
  .hero-card h1{font-size:36px}
}
@media (max-width:1024px){
  .cat-layout{grid-template-columns:210px minmax(0,1fr);gap:28px}
  .hero-card{padding:32px;gap:26px}
  .hero-stats{flex-basis:210px}
}
@media (max-width:991px){
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:6px;
    margin-left:0;padding:12px;
    background:var(--card);border:1px solid var(--line);
    border-radius:var(--r-lg);box-shadow:var(--sh3);
  }
  .nav-panel.open .nav-links{display:flex}
  .nav-item{flex-direction:row;justify-content:flex-start;gap:10px;font-size:14px;padding:12px 14px}
  .nav-actions .btn-sm{display:none}
  .cat-layout{grid-template-columns:minmax(0,1fr)}
  .toc{position:static;top:auto;padding:12px;overflow:hidden}
  .toc-title{display:none}
  .toc-list{
    display:flex;gap:8px;
    overflow-x:auto;overflow-y:hidden;
    padding-bottom:4px;
    scrollbar-width:thin;
  }
  .toc-list a{
    flex:0 0 auto;white-space:nowrap;
    background:#fff;border:1px solid var(--line);
    border-left-width:1px;border-radius:var(--r-pill);
    padding:8px 14px;font-size:13px;
  }
  .toc-list a.active{border-color:var(--primary);border-left-color:var(--primary)}
  .toc-note{display:none}
  .hero-card{flex-direction:column;align-items:stretch}
  .hero-stats{grid-template-columns:repeat(3,minmax(0,1fr));flex-basis:auto}
  .hero-stats li{border-bottom:0;border-right:1px dashed var(--line);padding-bottom:0;padding-right:12px}
  .hero-stats li:last-child{border-right:0;padding-right:0}
  .mini-bar{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:767px){
  .section{padding-top:44px}
  .section-tight{padding-top:32px}
  .container{padding:0 16px}
  .hero-card{padding:24px;border-radius:var(--r-lg)}
  .hero-card h1{font-size:28px;line-height:1.3}
  .hero-sub{font-size:15px}
  .point-grid{grid-template-columns:minmax(0,1fr)}
  .guide-block{padding:22px;border-radius:var(--r-md)}
  .block-title h2{font-size:22px}
  .block-title::before{height:18px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .site-footer{margin-top:56px;padding:40px 0 20px}
  .foot-grid{grid-template-columns:1fr}
  .foot-line{flex-direction:column;gap:6px}
}
@media (max-width:520px){
  .brand-text{font-size:15px}
  .hero-stats{grid-template-columns:minmax(0,1fr)}
  .hero-stats li{border-right:0;border-bottom:1px dashed var(--line);padding-right:0;padding-bottom:12px}
  .hero-stats li:last-child{border-bottom:0;padding-bottom:0}
  .mini-bar{grid-template-columns:minmax(0,1fr)}
  .stat-num{font-size:26px}
  .step-list li{padding-left:56px}
  .btn{width:100%}
  .cta-actions .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --brand:#1A5CB8;
  --brand-dark:#134488;
  --brand-soft:#E9F1FC;
  --brand-line:#BFD5F2;
  --signal:#E07A2F;
  --signal-soft:#FDF1E7;
  --ink:#0F1F35;
  --text:#3C4A5E;
  --muted:#6B7A90;
  --line:#E4EAF2;
  --page:#F6F8FB;
  --card:#FFFFFF;
  --ok:#1E9E62;
  --warn:#D9544D;
  --disabled:#C3CBD6;
  --foot:#101E33;
  --r-lg:16px;
  --r-md:14px;
  --r-sm:10px;
  --r-pill:999px;
  --r-img:12px;
  --sh1:0 1px 2px rgba(16,32,64,.05);
  --sh2:0 6px 20px rgba(16,32,64,.07);
  --sh3:0 14px 34px rgba(16,32,64,.10);
  --gap:24px;
  --sect:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--page);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,text-decoration-color .18s ease}
a:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
svg{flex:none}
:focus-visible{outline:2px solid rgba(26,92,184,.45);outline-offset:2px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  padding:12px 0;
  transition:padding .2s ease,background .2s ease;
}
.site-header.is-scrolled{
  padding:8px 0;
  background:rgba(246,248,251,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-panel{
  display:flex;align-items:center;gap:18px;
  background:rgba(255,255,255,.97);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh2);
  padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;min-width:0;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  width:38px;height:38px;flex:none;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(160deg,var(--brand) 0%,#2C7AD6 100%);
  color:#fff;box-shadow:var(--sh1);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text b{font-size:17px;color:var(--ink);letter-spacing:.01em;white-space:nowrap}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.02em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:6px;flex:1;flex-wrap:wrap}
.nav-item{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 12px;border-radius:var(--r-sm);
  font-size:13px;letter-spacing:.02em;color:var(--text);
  border:1px solid transparent;
  transition:background .18s ease,color .18s ease,transform .18s ease,border-color .18s ease;
}
.nav-item svg{width:18px;height:18px;color:var(--muted);transition:color .18s ease}
.nav-item:hover{background:var(--brand-soft);color:var(--brand-dark);text-decoration:none;transform:translateY(-1px)}
.nav-item:hover svg{color:var(--brand)}
.nav-item.active{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-line)}
.nav-item.active svg{color:var(--brand)}
.header-actions{display:flex;align-items:center;gap:10px;flex:none}
.menu-toggle{
  display:none;width:42px;height:42px;flex:none;
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 18px;border-radius:var(--r-sm);
  font-size:14px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .12s ease,border-color .18s ease;
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh1)}
.btn-primary:hover{background:var(--brand-dark);color:#fff}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand-line)}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-dark)}
.btn-quiet{background:transparent;color:var(--text);padding:0 10px}
.btn-quiet:hover{color:var(--brand);background:var(--brand-soft)}
.btn-block{width:100%}
.btn-sm{height:38px;padding:0 14px;font-size:13px}
.btn:disabled{background:var(--disabled);color:#fff;cursor:not-allowed}

/* ---------- 通用板块 ---------- */
main{display:block}
.section{padding:var(--sect) 0 0}
.section:last-of-type{padding-bottom:var(--sect)}
.section-head{max-width:760px;margin-bottom:34px}
.section-head h2{font-size:28px;line-height:1.35}
.section-head p{margin-top:12px;font-size:15px;color:var(--muted)}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;letter-spacing:.02em;color:var(--brand);
  background:var(--brand-soft);border:1px solid var(--brand-line);
  border-radius:var(--r-pill);padding:4px 12px;margin-bottom:14px;
}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:var(--r-pill);
  font-size:13px;letter-spacing:.02em;
  background:var(--brand-soft);color:var(--brand-dark);
  border:1px solid var(--brand-line);
}
.tag-warm{background:var(--signal-soft);color:#A2541B;border-color:#F3D6BC}
.tag-plain{background:#F1F4F8;color:var(--muted);border-color:var(--line)}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#C3CBD6}

/* ---------- 内页首屏 ---------- */
.page-hero{
  position:relative;
  background-image:linear-gradient(96deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.86) 52%,rgba(255,255,255,.62) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  padding:52px 0 56px;
}
.page-hero h1{font-size:38px;line-height:1.28;max-width:860px}
.hero-lead{margin-top:18px;max-width:720px;font-size:16px;color:var(--text)}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:8px 14px;font-size:13px;color:var(--text);box-shadow:var(--sh1);
}
.chip i{width:8px;height:8px;border-radius:50%;background:var(--brand);display:block}
.chip.is-alt i{background:var(--signal)}
.hero-meta{display:flex;flex-wrap:wrap;gap:26px;margin-top:28px}
.hero-meta div{display:flex;flex-direction:column;gap:2px}
.hero-meta b{font-size:22px;color:var(--ink);font-variant-numeric:tabular-nums}
.hero-meta span{font-size:13px;color:var(--muted)}

/* ---------- 双列大卡 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--gap)}
.feature-card{
  position:relative;
  display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,1fr);
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh2);overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease;
}
.feature-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--brand);opacity:0;transition:opacity .18s ease;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--sh3)}
.feature-card:hover::before{opacity:1}
.feature-media{overflow:hidden;background:var(--brand-soft)}
.feature-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;transition:transform .24s ease}
.feature-card:hover .feature-media img{transform:scale(1.03)}
.feature-body{padding:22px;display:flex;flex-direction:column;gap:12px}
.feature-body h3{font-size:20px;line-height:1.45}
.feature-body p{font-size:14px;line-height:1.75;color:var(--muted)}
.feature-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto}

/* ---------- 横条卡列表 ---------- */
.row-list{display:flex;flex-direction:column;gap:16px}
.row-card{
  position:relative;
  display:grid;grid-template-columns:240px minmax(0,1fr) auto;gap:20px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh1);padding:16px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.row-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--brand);opacity:0;transition:opacity .18s ease;border-radius:2px 2px 0 0;
}
.row-card:hover{transform:translateY(-2px);box-shadow:var(--sh3);border-color:var(--brand-line)}
.row-card:hover::before{opacity:1}
.row-media{border-radius:var(--r-img);overflow:hidden;background:var(--brand-soft)}
.row-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .24s ease}
.row-card:hover .row-media img{transform:scale(1.03)}
.row-body h3{font-size:18px;line-height:1.5}
.row-body p{font-size:14px;color:var(--muted);margin-top:8px}
.row-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.row-side{display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.status{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--ok);background:#EAF7F0;border:1px solid #C9E9D8;
  border-radius:var(--r-pill);padding:3px 10px;letter-spacing:.02em;
}
.status i{width:7px;height:7px;border-radius:50%;background:var(--ok);display:block}
.status.is-new{color:#A2541B;background:var(--signal-soft);border-color:#F3D6BC}
.status.is-new i{background:var(--signal)}
.row-link{font-size:13px;font-weight:600}

/* ---------- 迷你数据条 ---------- */
.metric-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh2);overflow:hidden;
}
.metric-strip .metric{padding:22px 24px;border-right:1px solid var(--line)}
.metric-strip .metric:last-child{border-right:0}
.metric b{display:block;font-size:34px;line-height:1.15;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.metric b small{font-size:15px;font-weight:600;color:var(--muted);margin-left:4px}
.metric span{display:block;font-size:13px;color:var(--muted);margin-top:6px}

/* ---------- 适配卡片 ---------- */
.adapt-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--gap)}
.adapt-card{
  position:relative;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh1);padding:24px 22px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.adapt-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--brand);opacity:0;transition:opacity .18s ease;border-radius:2px 2px 0 0;
}
.adapt-card:hover{transform:translateY(-2px);box-shadow:var(--sh3)}
.adapt-card:hover::before{opacity:1}
.adapt-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);margin-bottom:16px;
}
.adapt-card h3{font-size:18px;line-height:1.5}
.adapt-card p{font-size:14px;color:var(--muted);margin-top:10px}
.adapt-card ul{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.adapt-card li{position:relative;padding-left:18px;font-size:14px;color:var(--text)}
.adapt-card li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--brand-line)}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh1);overflow:hidden;
  transition:box-shadow .18s ease,border-color .18s ease;
}
.faq-item:hover{box-shadow:var(--sh2)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .faq-toggle{
  width:28px;height:28px;flex:none;border-radius:50%;
  display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);
  transition:transform .22s ease;
}
.faq-item[open] summary .faq-toggle{transform:rotate(180deg)}
.faq-item[open]{border-color:var(--brand-line)}
.faq-answer{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--text)}

/* ---------- CTA ---------- */
.cta-card{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:linear-gradient(120deg,var(--brand-soft) 0%,#F4F8FE 100%);
  border:1px solid var(--brand-line);border-radius:var(--r-lg);
  box-shadow:var(--sh2);padding:34px 36px;
}
.cta-card h2{font-size:24px}
.cta-card p{margin-top:10px;font-size:15px;color:var(--text);max-width:640px}
.cta-actions{display:flex;gap:12px;flex:none}
.cta-note{margin-top:14px;font-size:13px;color:var(--muted)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--foot);color:#B9C6D8;margin-top:88px;padding:60px 0 26px}
.site-footer .foot-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;
  padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.12);
}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;margin-bottom:14px}
.foot-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none;color:#fff}
.site-footer p{font-size:14px;line-height:1.85;color:#93A3B8;max-width:360px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em}
.site-footer ul{display:flex;flex-direction:column;gap:10px}
.site-footer li{font-size:14px;color:#93A3B8}
.site-footer a{color:#B9C6D8}
.site-footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.foot-line{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;font-size:13px;color:#7C8DA4;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{max-width:1140px}
  .brand-text em{display:none}
}
@media (max-width:991px){
  :root{--sect:64px;--gap:20px}
  .menu-toggle{display:flex}
  .header-menu{
    position:absolute;left:24px;right:24px;top:calc(100% + 10px);
    background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
    box-shadow:var(--sh3);padding:14px;
    display:none;flex-direction:column;gap:14px;
  }
  .header-menu.is-open{display:flex}
  .nav-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;width:100%}
  .nav-item{
    flex-direction:column;align-items:flex-start;gap:8px;
    background:#F8FAFD;border:1px solid var(--line);
    padding:14px;border-radius:var(--r-md);font-size:13px;
  }
  .header-actions{gap:10px;padding-top:12px;border-top:1px solid var(--line)}
  .header-actions .btn{flex:1}
  .header-panel{position:relative}
  .feature-card{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .row-card{grid-template-columns:200px minmax(0,1fr);align-items:start}
  .row-side{align-items:flex-start;flex-direction:row;grid-column:1/-1;justify-content:space-between;width:100%}
  .metric-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric-strip .metric{border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
  .metric-strip .metric:nth-child(2n){border-right:0}
  .metric-strip .metric:nth-child(n+3){border-bottom:0}
  .adapt-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-card{flex-direction:column;align-items:flex-start;gap:22px}
  .cta-actions{width:100%;flex-wrap:wrap}
  .site-footer .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .page-hero{padding:36px 0 40px}
  .page-hero h1{font-size:28px;line-height:1.32}
  .section-head h2{font-size:22px}
  .feature-grid{grid-template-columns:minmax(0,1fr)}
  .feature-card{grid-template-columns:minmax(0,1fr)}
  .row-card{grid-template-columns:minmax(0,1fr);gap:14px}
  .row-media img{aspect-ratio:16/10}
  .adapt-grid{grid-template-columns:minmax(0,1fr)}
  .metric-strip{grid-template-columns:minmax(0,1fr)}
  .metric-strip .metric{border-right:0;border-bottom:1px solid var(--line)}
  .metric-strip .metric:nth-child(n+3){border-bottom:1px solid var(--line)}
  .metric-strip .metric:last-child{border-bottom:0}
  .site-footer .foot-grid{grid-template-columns:1fr}
  .cta-card{padding:26px 20px}
  .cta-actions .btn{flex:1;min-width:150px}
  .hero-meta{gap:18px}
  .hero-meta b{font-size:20px}
}
@media (max-width:520px){
  :root{--sect:44px}
  body{font-size:15px}
  .brand-text b{font-size:15px;white-space:normal;line-height:1.3}
  .nav-links{grid-template-columns:minmax(0,1fr)}
  .header-actions{flex-direction:column}
  .header-actions .btn{width:100%}
  .btn{width:100%}
  .btn-quiet{width:100%}
  .cta-actions{flex-direction:column}
  .foot-line{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important}
}