/* roulang page: index */
:root{
  --ink:#0E3B33;--ink-deep:#08241F;--ink-soft:#5C8F7B;
  --copper:#C8622F;--copper-deep:#A44C22;
  --sand:#F6F3EC;--panel:#FFFFFF;--line:#E2DCCF;
  --text:#17211E;--text-2:#55605B;--text-3:#8A9490;
  --ok:#2E7D5B;--warn:#B4552E;--zebra:#FBFAF6;
  --r-lg:16px;--r-md:12px;--r-sm:10px;
  --shadow:0 1px 2px rgba(14,59,51,.06);
  --shadow-hover:0 14px 30px -14px rgba(14,59,51,.28);
  --maxw:1200px;
  --ease-c:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;
  --ease-m:transform .25s cubic-bezier(.2,.7,.3,1),box-shadow .25s cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--sand);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none}
p{margin:0 0 16px}
h1,h2,h3,h4{margin:0;color:var(--ink-deep);font-weight:700;line-height:1.3}
ul,ol{margin:0 0 16px;padding-left:20px}
button{font:inherit;cursor:pointer}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:4px}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:12px 0;background:rgba(246,243,236,.94);backdrop-filter:saturate(1.2) blur(8px)}
.nav-card{
  display:flex;align-items:center;gap:14px;justify-content:space-between;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow);padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;min-width:0;flex:none}
.brand-mark{position:relative;width:30px;height:30px;border-radius:8px;background:var(--ink);flex:none}
.brand-mark::after{content:"";position:absolute;inset:8px;border:2px solid var(--copper);border-radius:3px}
.brand-name{font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap;letter-spacing:-.2px}
.brand-div{width:1px;height:16px;background:var(--line);flex:none}
.brand-tag{font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--copper);background:rgba(200,98,47,.1);border-radius:999px;padding:2px 10px;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:6px;min-width:0}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:var(--r-md);
  font-size:14px;font-weight:600;color:var(--text-2);border:1px solid transparent;
  transition:var(--ease-c),var(--ease-m);white-space:nowrap;
}
.nav-link:hover{background:var(--sand);color:var(--ink);transform:translateY(-1px)}
.nav-link.is-active{background:var(--ink);color:#fff}
.nav-actions{display:flex;align-items:center;gap:8px;flex:none}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-sm);border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1;text-align:center;
  transition:var(--ease-c),var(--ease-m);
}
.btn-primary{background:var(--copper);color:#fff}
.btn-primary:hover{background:var(--copper-deep);transform:translateY(-1px);box-shadow:0 10px 20px -12px rgba(164,76,34,.7)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:rgba(14,59,51,.06);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{min-height:38px;padding:0 14px;font-size:13px}
.btn-block{width:100%}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid transparent;padding-bottom:1px;transition:var(--ease-c),var(--ease-m);
}
.btn-text::after{content:"→";transition:transform .25s cubic-bezier(.2,.7,.3,1)}
.btn-text:hover{border-bottom-color:var(--ink)}
.btn-text:hover::after{transform:translateX(3px)}

/* ---------- Sections ---------- */
.section{padding:72px 0;border-top:1px solid var(--line)}
.section.on-panel{background:var(--panel)}
.section-head{max-width:780px;margin-bottom:32px}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--ink-soft);text-transform:uppercase;
}
.section-title{font-size:clamp(22px,3vw,32px);margin:8px 0 10px;letter-spacing:-.3px}
.section-sub{margin:0;color:var(--text-2);font-size:15px}

/* ---------- Grid ---------- */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid>*{min-width:0}

/* ---------- Cards ---------- */
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow);transition:var(--ease-m),var(--ease-c);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.card-title{font-size:18px;margin:0 0 10px}
.card-text{font-size:14.5px;line-height:1.75;color:var(--text-2);margin:0 0 12px}
.num-box{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:34px;height:26px;padding:0 8px;border-radius:8px;
  background:rgba(14,59,51,.07);color:var(--ink);
  font-size:12.5px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  border:1px solid var(--line);background:var(--zebra);
  font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--text-2);
}
.tag-copper{background:rgba(200,98,47,.1);border-color:rgba(200,98,47,.25);color:var(--copper-deep)}
.tag-ink{background:rgba(14,59,51,.07);border-color:rgba(14,59,51,.18);color:var(--ink)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}

/* ---------- Hero ---------- */
.hero{padding:44px 0 64px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;letter-spacing:-.5px;margin:12px 0 18px}
.hero-lead{font-size:16px;line-height:1.85;color:var(--text-2);margin-bottom:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.spec-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.spec{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);padding:12px 14px;box-shadow:var(--shadow);min-width:0}
.spec-label{display:block;font-size:12px;color:var(--text-3);letter-spacing:.04em;margin-bottom:4px}
.spec-value{font-size:16px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.4}

/* demo window mock */
.demo-window{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-hover);overflow:hidden}
.demo-bar{display:flex;align-items:center;gap:6px;height:34px;padding:0 12px;background:var(--zebra);border-bottom:1px solid var(--line)}
.demo-dot{width:8px;height:8px;border-radius:50%;background:var(--line)}
.demo-url{margin-left:8px;height:16px;flex:1;max-width:220px;border-radius:999px;background:var(--sand)}
.demo-body{padding:16px;background:var(--sand);display:grid;gap:10px}
.demo-strip{height:12px;border-radius:6px;background:#EDE7DA}
.demo-strip.w70{width:70%}
.demo-strip.w45{width:45%}
.demo-panels{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.demo-panel{height:58px;border-radius:10px;background:var(--panel);border:1px solid var(--line)}
.demo-panel.is-ink{background:rgba(14,59,51,.09);border-color:rgba(14,59,51,.16)}
.demo-panel.is-copper{background:rgba(200,98,47,.12);border-color:rgba(200,98,47,.25)}
.demo-rows{display:grid;gap:8px;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:12px}
.demo-row{height:9px;border-radius:5px;background:var(--sand)}
.demo-row.w80{width:80%}
.demo-row.w60{width:60%}
.demo-row.w90{width:90%}
.demo-caption{font-size:13px;color:var(--text-3);margin:10px 0 0;text-align:center}

/* ---------- Download ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.dl-card{display:flex;flex-direction:column;gap:10px;min-width:0}
.dl-head{display:flex;align-items:center;gap:10px}
.dl-icon{
  width:38px;height:38px;border-radius:10px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:rgba(14,59,51,.07);color:var(--ink);font-size:13px;font-weight:700;letter-spacing:.02em;
}
.dl-name{font-size:17px;font-weight:700;color:var(--ink-deep)}
.dl-file{font-size:12.5px;color:var(--text-3);font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.dl-note{font-size:12.5px;color:var(--text-3);margin:2px 0 0}

/* ---------- Feature asymmetric ---------- */
.feat-asym{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}
.feat-stack{display:grid;gap:24px}
.feat-lead{background:var(--ink);color:#fff;border:none}
.feat-lead h3{color:#fff;font-size:22px;margin:14px 0 12px}
.feat-lead p{color:rgba(255,255,255,.78);font-size:15px;margin-bottom:0}
.feat-lead .num-box{background:rgba(255,255,255,.14);color:#fff}
.feat-lead .tag{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.22);color:#fff}

/* ---------- Plan matrix ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.plan-item{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);padding:20px;box-shadow:var(--shadow);transition:var(--ease-m),var(--ease-c);min-width:0}
.plan-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(14,59,51,.2)}
.plan-item h3{font-size:16.5px;margin:10px 0 8px}
.plan-item ul{margin:0 0 10px;padding-left:18px;font-size:14px;color:var(--text-2);line-height:1.7}
.plan-rule{font-size:13px;color:var(--text-3);border-top:1px dashed var(--line);padding-top:10px;margin:0}

/* ---------- Tools narrow ---------- */
.tool-card{display:flex;flex-direction:column;gap:10px}
.tool-top{display:flex;align-items:center;justify-content:space-between;gap:8px}
.tool-mark{width:30px;height:30px;border-radius:9px;background:rgba(92,143,123,.16);border:1px solid rgba(92,143,123,.3)}
.tool-card h3{font-size:16px;margin:0}
.tool-card p{font-size:14px;color:var(--text-2);margin:0}

/* ---------- Scene ---------- */
.scene-card h3{font-size:17px;margin:12px 0 8px}
.scene-card p{font-size:14.5px;color:var(--text-2);margin-bottom:14px}

/* ---------- Showcase ---------- */
.show-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-bottom:24px}
.show-grid>*{min-width:0}
.mobile-show{display:grid;grid-template-columns:260px 1fr;gap:32px;align-items:center}
.phone-mock{
  width:100%;max-width:260px;border:1px solid var(--line);border-radius:22px;background:var(--panel);
  box-shadow:var(--shadow-hover);padding:10px;
}
.phone-screen{background:var(--sand);border-radius:14px;padding:12px;display:grid;gap:9px;min-height:300px}
.phone-bar{height:10px;border-radius:5px;background:#E9E3D5}
.phone-bar.w70{width:70%}
.phone-bar.w50{width:50%}
.phone-block{height:52px;border-radius:10px;background:var(--panel);border:1px solid var(--line)}
.phone-block.is-ink{background:rgba(14,59,51,.08);border-color:rgba(14,59,51,.16)}

/* ---------- Cases ---------- */
.case-card{display:grid;gap:10px}
.case-row{display:grid;grid-template-columns:82px 1fr;gap:12px;font-size:14px;line-height:1.7;min-width:0}
.case-k{color:var(--text-3);font-weight:600;font-size:13px}
.case-v{color:var(--text-2);margin:0}

/* ---------- Pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:stretch}
.price-card{
  display:flex;flex-direction:column;gap:14px;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;box-shadow:var(--shadow);
  transition:var(--ease-m);position:relative;overflow:hidden;min-width:0;
}
.price-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.price-card.is-featured{background:var(--ink);border-color:var(--ink);color:#fff}
.price-card.is-featured::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:var(--copper)}
.price-card.is-featured h3,.price-card.is-featured .price-mul,.price-card.is-featured .price-label{color:#fff}
.price-card.is-featured li,.price-card.is-featured .price-note{color:rgba(255,255,255,.76)}
.price-label{font-size:12px;letter-spacing:.04em;font-weight:600;color:var(--text-3)}
.price-mul{font-size:34px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.1;letter-spacing:-1px}
.price-mul span{font-size:15px;font-weight:600;margin-left:4px;letter-spacing:0}
.price-card ul{margin:0;padding-left:18px;font-size:14px;color:var(--text-2);line-height:1.8}
.price-note{font-size:12.5px;color:var(--text-3);margin:0}
.price-cta{margin-top:auto}
.price-foot{font-size:12.5px;color:var(--text-3);margin:18px 0 0}

/* ---------- Feedback ---------- */
.quote-card{position:relative;padding-top:34px}
.quote-card::before{
  content:"“";position:absolute;top:6px;left:20px;font-size:44px;line-height:1;
  color:rgba(200,98,47,.28);font-family:Georgia,serif;
}
.quote-card p{font-size:14.5px;color:var(--text-2);margin-bottom:12px}
.quote-anon{font-size:12.5px;color:var(--text-3);letter-spacing:.04em}

/* ---------- Reputation bars ---------- */
.bar-list{display:grid;gap:12px}
.bar-item{
  display:grid;grid-template-columns:180px 1fr;gap:16px;align-items:center;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 18px;box-shadow:var(--shadow);min-width:0;
}
.bar-item strong{font-size:14.5px;color:var(--ink-deep);font-weight:600}
.bar-item span{font-size:14px;color:var(--text-2)}
.bar-total{background:rgba(14,59,51,.05);border-style:dashed}

/* ---------- News / CMS ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.news-card{display:flex;flex-direction:column;gap:10px;min-width:0}
.news-title{font-size:17px;line-height:1.5;margin:0}
.news-title a{color:var(--ink-deep);transition:var(--ease-c)}
.news-title a:hover{color:var(--copper-deep)}
.news-excerpt{font-size:14px;color:var(--text-2);margin:0}
.news-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:12.5px;color:var(--text-3);margin-top:auto}
.empty-card{background:var(--panel);border:1px dashed var(--line);border-radius:var(--r-lg);padding:32px;text-align:center}
.empty-card p{color:var(--text-2);margin-bottom:16px}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.step{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);padding:20px;box-shadow:var(--shadow);min-width:0}
.step h3{font-size:16px;margin:10px 0 8px}
.step p{font-size:14px;color:var(--text-2);margin:0}

/* ---------- Fees ---------- */
.fee-wrap{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-bottom:24px}
.fee-card h3{font-size:16.5px;margin:10px 0 8px}
.fee-card p{font-size:14px;color:var(--text-2);margin:0}
.param-list{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.param-row{display:grid;grid-template-columns:200px 1fr;gap:16px;padding:14px 20px;font-size:14px;border-bottom:1px solid var(--line);min-width:0}
.param-row:nth-child(odd){background:var(--zebra)}
.param-row:last-child{border-bottom:none}
.param-k{font-weight:600;color:var(--ink);font-size:14px}
.param-v{color:var(--text-2);margin:0}
.param-v b{color:var(--copper-deep);font-weight:600;font-variant-numeric:tabular-nums}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow);overflow:hidden}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 52px 18px 20px;position:relative;
  font-size:15.5px;font-weight:600;color:var(--ink-deep);transition:var(--ease-c);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--ink-soft);transition:transform .25s ease;
}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:hover{background:var(--zebra)}
.faq-body{padding:0 20px 18px;font-size:14.5px;color:var(--text-2);line-height:1.8}

/* ---------- Topic entries ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.topic-card{display:flex;flex-direction:column;gap:12px;min-width:0}
.topic-card h3{font-size:19px;margin:0}
.topic-num{font-size:28px;font-weight:700;color:rgba(14,59,51,.18);font-variant-numeric:tabular-nums;line-height:1}
.topic-list{display:grid;gap:8px;font-size:14px;color:var(--text-2);margin:0;padding:0;list-style:none}
.topic-list li{padding-left:14px;position:relative}
.topic-list li::before{content:"";position:absolute;left:0;top:10px;width:5px;height:5px;border-radius:50%;background:var(--ink-soft)}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);border-radius:20px;padding:48px 40px;color:#fff;
  display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.76);font-size:14.5px;margin:0;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.1)}
.risk-note{font-size:12.5px;color:rgba(255,255,255,.6);margin-top:16px;grid-column:1/-1;border-top:1px solid rgba(255,255,255,.14);padding-top:14px}

/* ---------- Footer ---------- */
.site-footer{background:var(--panel);border-top:1px solid var(--line);padding:56px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-desc{font-size:14px;color:var(--text-2);max-width:320px;margin:0}
.footer-col h4{font-size:13px;letter-spacing:.05em;color:var(--text-3);font-weight:600;margin-bottom:14px}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2);transition:var(--ease-c)}
.footer-col a:hover{color:var(--copper-deep)}
.footer-bottom{border-top:1px solid var(--line);padding-top:20px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;color:var(--text-3)}
.footer-bottom span{min-width:0}

/* ---------- Responsive ---------- */
@media (max-width:1100px){
  .nav-card{flex-wrap:wrap;gap:10px}
  .nav-links{
    order:3;width:100%;overflow-x:auto;padding-top:10px;border-top:1px solid var(--line);
    scrollbar-width:none;-ms-overflow-style:none;
  }
  .nav-links::-webkit-scrollbar{display:none}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .feat-asym{grid-template-columns:1fr}
  .section{padding:60px 0}
}
@media (max-width:960px){
  .grid-3,.grid-4,.plan-grid,.price-grid,.dl-grid,.show-grid,.steps,.fee-wrap{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-2,.news-grid,.topic-grid{grid-template-columns:1fr}
  .spec-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .mobile-show{grid-template-columns:1fr;justify-items:center;text-align:left}
  .phone-mock{max-width:230px}
  .cta-band{grid-template-columns:1fr;padding:36px 24px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
  .bar-item{grid-template-columns:1fr;gap:6px}
  .param-row{grid-template-columns:1fr;gap:6px}
  .case-row{grid-template-columns:70px 1fr}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .section-head{margin-bottom:24px}
  .grid,.plan-grid,.price-grid,.dl-grid,.show-grid,.steps,.fee-wrap,.spec-grid,.grid-3,.grid-4{grid-template-columns:1fr}
  .card{padding:20px}
  .hero{padding:20px 0 44px}
  .hero-actions .btn{flex:1 1 100%}
  .nav-card{padding:10px}
  .brand-name{font-size:15px}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .demo-panels{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* roulang page: article */
:root{
  --ink:#0E3B33;--ink-deep:#08241F;--ink-soft:#5C8F7B;
  --copper:#C8622F;--copper-deep:#A44C22;
  --sand:#F6F3EC;--panel:#FFFFFF;--line:#E2DCCF;
  --text:#17211E;--text-2:#55605B;--text-3:#8A9490;
  --ok:#2E7D5B;--warn:#B4552E;--zebra:#FBFAF6;
  --r-lg:16px;--r-md:12px;--r-sm:10px;
  --shadow:0 1px 2px rgba(14,59,51,.06);
  --shadow-hover:0 14px 30px -14px rgba(14,59,51,.28);
  --maxw:1200px;
  --ease-c:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;
  --ease-m:transform .25s cubic-bezier(.2,.7,.3,1),box-shadow .25s cubic-bezier(.2,.7,.3,1);
}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--sand);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
*{box-sizing:border-box}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4{line-height:1.35;color:var(--text);letter-spacing:-.2px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:12px 0;background:rgba(246,243,236,.94);backdrop-filter:saturate(1.2) blur(8px)}
.nav-card{
  display:flex;align-items:center;gap:14px;justify-content:space-between;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow);padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;min-width:0;flex:none}
.brand-mark{position:relative;width:30px;height:30px;border-radius:8px;background:var(--ink);flex:none}
.brand-mark::after{content:"";position:absolute;inset:8px;border:2px solid var(--copper);border-radius:3px}
.brand-name{font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap;letter-spacing:-.2px}
.brand-div{width:1px;height:16px;background:var(--line);flex:none}
.brand-tag{font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--copper);background:rgba(200,98,47,.1);border-radius:999px;padding:2px 10px;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:6px;min-width:0}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:var(--r-md);
  font-size:14px;font-weight:600;color:var(--text-2);border:1px solid transparent;
  transition:var(--ease-c),var(--ease-m);white-space:nowrap;
}
.nav-link:hover{background:var(--sand);color:var(--ink);transform:translateY(-1px)}
.nav-link.is-active{background:var(--ink);color:#fff}
.nav-actions{display:flex;align-items:center;gap:8px;flex:none}
/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-sm);border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1;text-align:center;
  transition:var(--ease-c),var(--ease-m);
}
.btn-primary{background:var(--copper);color:#fff}
.btn-primary:hover{background:var(--copper-deep);transform:translateY(-1px);box-shadow:0 10px 20px -12px rgba(164,76,34,.7)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:rgba(14,59,51,.06);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{min-height:38px;padding:0 14px;font-size:13px}
.btn-block{width:100%}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid transparent;padding-bottom:1px;transition:var(--ease-c),var(--ease-m);
}
.btn-text::after{content:"→";transition:transform .25s cubic-bezier(.2,.7,.3,1)}
.btn-text:hover{border-bottom-color:var(--ink)}
.btn-text:hover::after{transform:translateX(3px)}
/* ---------- Sections ---------- */
.section{padding:72px 0;border-top:1px solid var(--line)}
.section.on-panel{background:var(--panel)}
.section-tight{padding:40px 0}
.section-head{max-width:780px;margin-bottom:32px}
.eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--ink-soft);text-transform:uppercase}
.section-title{font-size:clamp(22px,3vw,32px);margin:8px 0 10px;letter-spacing:-.3px}
.section-sub{margin:0;color:var(--text-2);font-size:15px}
/* ---------- Grid ---------- */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid>*{min-width:0}
/* ---------- Cards ---------- */
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow);transition:var(--ease-m),var(--ease-c);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.card-title{font-size:18px;margin:0 0 10px}
.card-text{font-size:14.5px;line-height:1.75;color:var(--text-2);margin:0 0 12px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  border:1px solid var(--line);background:var(--zebra);
  font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--text-2);
}
.tag-copper{background:rgba(200,98,47,.1);border-color:rgba(200,98,47,.25);color:var(--copper-deep)}
.tag-ink{background:rgba(14,59,51,.07);border-color:rgba(14,59,51,.18);color:var(--ink)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
/* ---------- Article page ---------- */
.crumb-bar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:16px 0;border-bottom:1px solid var(--line);
}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13.5px;color:var(--text-3)}
.crumb a{color:var(--text-2);transition:var(--ease-c)}
.crumb a:hover{color:var(--ink)}
.crumb .sep{color:var(--text-3);opacity:.7}
.crumb .current{color:var(--ink);font-weight:600}
.article-head{max-width:820px;padding:36px 0 28px}
.article-h1{
  font-size:clamp(24px,3.4vw,38px);line-height:1.32;letter-spacing:-.5px;
  margin:14px 0 16px;overflow-wrap:break-word;word-break:normal;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  font-size:13.5px;color:var(--text-3);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);opacity:.6;display:inline-block}
.keypoints{
  background:rgba(14,59,51,.05);border:1px solid rgba(14,59,51,.12);
  border-left:3px solid var(--copper);border-radius:var(--r-md);
  padding:22px 24px;margin:0 0 40px;
}
.keypoints h2{font-size:15px;margin:0 0 12px;letter-spacing:.02em;color:var(--ink)}
.keypoints ul{margin:0;padding-left:0;list-style:none;display:grid;gap:9px}
.keypoints li{
  position:relative;padding-left:20px;font-size:14.5px;line-height:1.7;color:var(--text-2);
}
.keypoints li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--ink-soft);
}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:44px;align-items:start}
.article-main{min-width:0}
.article-body{max-width:760px}
.article-side{display:grid;gap:18px;position:sticky;top:96px;min-width:0}
.side-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--shadow);
}
.side-title{font-size:14px;margin:0 0 14px;letter-spacing:.02em;color:var(--ink);display:flex;align-items:center;gap:8px}
.side-title::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--copper)}
.toc{list-style:none;margin:0;padding:0;display:grid;gap:6px;counter-reset:toc}
.toc li{min-width:0}
.toc a{
  display:block;font-size:13.5px;line-height:1.6;color:var(--text-2);
  padding:6px 8px;border-radius:8px;border-left:2px solid transparent;
  transition:var(--ease-c);overflow-wrap:break-word;
}
.toc a:hover{background:var(--sand);color:var(--ink);border-left-color:var(--ink-soft)}
.side-dl{display:grid;gap:8px}
.side-note{font-size:12.5px;color:var(--text-3);margin:10px 0 0;line-height:1.7}
/* ---------- Prose ---------- */
.prose{font-size:16px;line-height:1.78;color:var(--text);overflow-wrap:break-word;word-break:normal}
.prose>*:first-child{margin-top:0}
.prose p{margin:0 0 18px}
.prose h2{
  font-size:22px;margin:40px 0 16px;padding-bottom:10px;
  border-bottom:1px solid var(--line);scroll-margin-top:100px;
}
.prose h3{font-size:18px;margin:32px 0 12px;scroll-margin-top:100px}
.prose h4{font-size:16px;margin:24px 0 10px}
.prose a{
  color:var(--ink);text-decoration:underline;
  text-decoration-color:rgba(14,59,51,.35);text-underline-offset:3px;
  transition:var(--ease-c);
}
.prose a:hover{text-decoration-color:var(--ink);color:var(--ink-deep)}
.prose ul,.prose ol{margin:0 0 18px;padding-left:22px}
.prose li{margin:0 0 8px}
.prose ul li::marker{color:var(--ink-soft)}
.prose ol li::marker{color:var(--copper);font-weight:600}
.prose blockquote{
  margin:22px 0;padding:16px 20px;background:var(--zebra);
  border-left:3px solid var(--ink-soft);border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text-2);font-size:15px;
}
.prose blockquote p:last-child{margin:0}
.prose img{border-radius:12px;margin:24px auto;width:auto;max-width:100%;height:auto}
.prose figure{margin:24px 0}
.prose figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}
.prose table{
  width:100%;border-collapse:collapse;margin:22px 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
}
.prose th,.prose td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.prose th{background:rgba(14,59,51,.05);color:var(--ink);font-weight:600;white-space:nowrap}
.prose tbody tr:nth-child(even){background:var(--zebra)}
.prose tbody tr:last-child td{border-bottom:0}
.prose code{
  background:var(--zebra);border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;font-size:13.5px;
}
.prose hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.prose .num{font-variant-numeric:tabular-nums;font-weight:600}
.table-scroll{max-width:100%;overflow-x:auto}
/* ---------- Empty state ---------- */
.empty-state{
  background:var(--panel);border:1px dashed var(--line);border-radius:var(--r-lg);
  padding:40px 24px;text-align:center;box-shadow:var(--shadow);
}
.empty-state h2{font-size:19px;margin:0 0 8px}
.empty-state p{color:var(--text-2);font-size:14.5px;margin:0 0 18px}
/* ---------- Risk note ---------- */
.risk-note{
  display:flex;gap:14px;align-items:flex-start;
  background:rgba(180,85,46,.08);border:1px solid rgba(180,85,46,.22);
  border-radius:var(--r-md);padding:18px 20px;margin-top:40px;
}
.risk-icon{
  flex:none;width:26px;height:26px;border-radius:8px;background:rgba(180,85,46,.16);
  color:var(--warn);display:grid;place-items:center;font-weight:700;font-size:14px;
}
.risk-note p{margin:0;font-size:14px;line-height:1.75;color:#7C3C1F}
/* ---------- Related / prevnext ---------- */
.post-card{
  display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:22px;box-shadow:var(--shadow);
  transition:var(--ease-m),var(--ease-c);height:100%;min-width:0;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.post-card h3{font-size:16.5px;margin:0 0 10px;overflow-wrap:break-word}
.post-card h3 a{transition:var(--ease-c)}
.post-card h3 a:hover{color:var(--copper-deep)}
.post-card p{font-size:14px;color:var(--text-2);line-height:1.7;margin:0 0 14px}
.post-meta{display:flex;gap:10px;align-items:center;font-size:12.5px;color:var(--text-3);margin-top:auto}
.prevnext{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.nav-card-link{
  display:block;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px 22px;box-shadow:var(--shadow);transition:var(--ease-m),var(--ease-c);min-width:0;
}
.nav-card-link:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(14,59,51,.25)}
.nav-card-link .kicker{font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--ink-soft);display:block;margin-bottom:6px}
.nav-card-link .label{font-size:16px;font-weight:600;color:var(--ink)}
/* ---------- CTA band ---------- */
.cta-band{
  background:var(--ink);border-radius:20px;padding:38px 40px;color:#fff;
  display:flex;flex-wrap:wrap;gap:26px;justify-content:space-between;align-items:center;
}
.cta-band h2{color:#fff;font-size:clamp(19px,2.6vw,25px);margin:0 0 8px}
.cta-band p{color:rgba(255,255,255,.74);margin:0;font-size:14.5px;max-width:56ch;line-height:1.75}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12)}
/* ---------- Footer ---------- */
.site-footer{background:var(--ink-deep);color:rgba(255,255,255,.78);padding:56px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,minmax(0,1fr));gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.12)}
.footer-brand .brand-tag{color:#F0A87C;background:rgba(200,98,47,.22)}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin:0;max-width:42ch}
.footer-col h4{font-size:14px;color:#fff;margin:0 0 12px;letter-spacing:.02em}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.footer-col a{color:rgba(255,255,255,.7);font-size:14px;transition:var(--ease-c)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:18px;
  font-size:12.5px;color:rgba(255,255,255,.52);line-height:1.7;
}
/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:32px}
}
@media (max-width:1023px){
  .section{padding:56px 0}
  .article-layout{grid-template-columns:1fr}
  .article-side{position:static;grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-rows:1fr}
  .article-body{max-width:none}
  .grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
  .article-head{padding:28px 0 22px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .nav-card{flex-wrap:wrap;gap:10px}
  .nav-links{order:3;width:100%;overflow-x:auto;padding-top:8px;margin-top:2px;border-top:1px solid var(--line);-ms-overflow-style:none;scrollbar-width:none}
  .nav-links::-webkit-scrollbar{display:none}
  .nav-actions{flex:1;justify-content:flex-end}
  .nav-actions .btn-ghost{display:none}
  .brand-name{font-size:15px}
  .section{padding:44px 0}
  .grid-2,.grid-3,.grid-4,.prevnext{grid-template-columns:1fr}
  .article-side{grid-template-columns:1fr}
  .article-h1{font-size:clamp(22px,6vw,28px)}
  .keypoints{padding:18px}
  .prose h2{font-size:20px;margin-top:34px}
  .prose h3{font-size:17px;margin-top:26px}
  .prose{font-size:15.5px}
  .cta-band{padding:28px 22px;border-radius:16px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:22px}
  .footer-bottom{flex-direction:column}
  .crumb-bar{padding:12px 0}
}
@media (max-width:520px){
  .article-meta{font-size:12.5px}
  .risk-note{padding:14px 16px}
}

/* roulang page: category1 */
:root{
  --ink:#0E3B33;--ink-deep:#08241F;--ink-soft:#5C8F7B;
  --copper:#C8622F;--copper-deep:#A44C22;
  --sand:#F6F3EC;--panel:#FFFFFF;--line:#E2DCCF;
  --text:#17211E;--text-2:#55605B;--text-3:#8A9490;
  --ok:#2E7D5B;--warn:#B4552E;--zebra:#FBFAF6;
  --r-lg:16px;--r-md:12px;--r-sm:10px;
  --shadow:0 1px 2px rgba(14,59,51,.06);
  --shadow-hover:0 14px 30px -14px rgba(14,59,51,.28);
  --maxw:1200px;
  --ease-c:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;
  --ease-m:transform .25s cubic-bezier(.2,.7,.3,1),box-shadow .25s cubic-bezier(.2,.7,.3,1);
}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--sand);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4{line-height:1.35}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:12px 0;background:rgba(246,243,236,.94);backdrop-filter:saturate(1.2) blur(8px)}
.nav-card{
  display:flex;align-items:center;gap:14px;justify-content:space-between;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow);padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;min-width:0;flex:none}
.brand-mark{position:relative;width:30px;height:30px;border-radius:8px;background:var(--ink);flex:none}
.brand-mark::after{content:"";position:absolute;inset:8px;border:2px solid var(--copper);border-radius:3px}
.brand-name{font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap;letter-spacing:-.2px}
.brand-div{width:1px;height:16px;background:var(--line);flex:none}
.brand-tag{font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--copper);background:rgba(200,98,47,.1);border-radius:999px;padding:2px 10px;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:6px;min-width:0}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:var(--r-md);
  font-size:14px;font-weight:600;color:var(--text-2);border:1px solid transparent;
  transition:var(--ease-c),var(--ease-m);white-space:nowrap;
}
.nav-link:hover{background:var(--sand);color:var(--ink);transform:translateY(-1px)}
.nav-link.is-active{background:var(--ink);color:#fff}
.nav-actions{display:flex;align-items:center;gap:8px;flex:none}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-sm);border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1;text-align:center;
  transition:var(--ease-c),var(--ease-m);
}
.btn-primary{background:var(--copper);color:#fff}
.btn-primary:hover{background:var(--copper-deep);transform:translateY(-1px);box-shadow:0 10px 20px -12px rgba(164,76,34,.7)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:rgba(14,59,51,.06);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{min-height:38px;padding:0 14px;font-size:13px}
.btn-block{width:100%}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid transparent;padding-bottom:1px;transition:var(--ease-c),var(--ease-m);
}
.btn-text::after{content:"→";transition:transform .25s cubic-bezier(.2,.7,.3,1)}
.btn-text:hover{border-bottom-color:var(--ink)}
.btn-text:hover::after{transform:translateX(3px)}

/* ---------- Sections ---------- */
.section{padding:72px 0;border-top:1px solid var(--line)}
.section.on-panel{background:var(--panel)}
.section-head{max-width:780px;margin-bottom:32px}
.eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--ink-soft)}
.section-title{font-size:clamp(22px,3vw,32px);margin:8px 0 10px;letter-spacing:-.3px}
.section-sub{margin:0;color:var(--text-2);font-size:15px}

/* ---------- Grid ---------- */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid>*{min-width:0}

/* ---------- Cards ---------- */
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow);transition:var(--ease-m),var(--ease-c);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.card-title{font-size:18px;margin:0 0 10px}
.card-text{font-size:14.5px;line-height:1.75;color:var(--text-2);margin:0 0 12px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  border:1px solid var(--line);background:var(--zebra);
  font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--text-2);
}
.tag-copper{background:rgba(200,98,47,.1);border-color:rgba(200,98,47,.25);color:var(--copper-deep)}
.tag-ink{background:rgba(14,59,51,.07);border-color:rgba(14,59,51,.18);color:var(--ink)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}

/* ---------- 分类页页头 ---------- */
.cat-head{padding:32px 0 56px;border-top:0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.breadcrumb a{color:var(--text-2);transition:var(--ease-c)}
.breadcrumb a:hover{color:var(--copper)}
.cat-hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:start}
.cat-hero-grid h1{font-size:clamp(26px,3.6vw,38px);line-height:1.3;letter-spacing:-.4px;margin:0 0 16px}
.cat-lead{color:var(--text-2);font-size:15.5px;margin:0 0 12px;line-height:1.85}
.cat-line{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.param-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.param-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);padding:16px;box-shadow:var(--shadow);transition:var(--ease-m)}
.param-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.param-label{font-size:12px;font-weight:600;color:var(--text-3);letter-spacing:.04em;margin:0}
.param-value{font-size:19px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;margin:6px 0 4px;letter-spacing:-.3px}
.param-note{font-size:12.5px;color:var(--text-2);margin:0;line-height:1.6}

/* ---------- 速览卡 ---------- */
.overview-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);padding:6px 26px}
.overview-item{display:grid;grid-template-columns:52px 1fr;gap:18px;padding:22px 0;border-top:1px solid var(--line);align-items:start}
.overview-item:first-child{border-top:0}
.num-block{
  width:44px;height:44px;border-radius:12px;background:rgba(14,59,51,.07);color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
  font-variant-numeric:tabular-nums;flex:none;
}
.overview-item h3{margin:0 0 6px;font-size:17px}
.overview-item p{margin:0;font-size:14.5px;color:var(--text-2);line-height:1.8}

/* ---------- 方案条目 ---------- */
.plan-list{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);overflow:hidden}
.plan-item{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;padding:24px;border-top:1px solid var(--line);transition:background-color .2s ease-out}
.plan-item:first-child{border-top:0}
.plan-item:hover{background:var(--zebra)}
.plan-name{margin:0 0 8px;font-size:17px;font-weight:700;display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.plan-index{font-size:12px;font-weight:700;color:var(--ink-soft);letter-spacing:.08em;font-variant-numeric:tabular-nums}
.plan-desc{margin:0 0 12px;font-size:14px;color:var(--text-2);line-height:1.8}
.plan-side{border-left:1px dashed var(--line);padding-left:26px;display:flex;flex-direction:column;gap:14px;justify-content:space-between}
.plan-rules{list-style:none;margin:0;padding:0;display:grid;gap:7px;font-size:13.5px;color:var(--text-2)}
.plan-rules li{position:relative;padding-left:15px;line-height:1.7}
.plan-rules li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:var(--copper)}

/* ---------- 场景对照 ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.compare-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;box-shadow:var(--shadow);transition:var(--ease-m)}
.compare-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.compare-card h3{margin:0 0 4px;font-size:18px}
.compare-sub{margin:0 0 8px;font-size:13px;color:var(--text-3)}
.compare-row{display:grid;grid-template-columns:104px minmax(0,1fr);gap:14px;padding:14px 0;border-top:1px solid var(--line);font-size:14px;color:var(--text-2);line-height:1.75}
.compare-key{font-size:13px;font-weight:600;color:var(--ink)}

/* ---------- 规则说明 ---------- */
.rules-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:40px;align-items:start}
.rules-side{position:sticky;top:96px}
.rules-side h2{font-size:24px;margin:10px 0 12px;letter-spacing:-.3px}
.rules-side p{margin:0;font-size:14px;color:var(--text-2);line-height:1.8}
.rules-list{display:grid;gap:14px}
.rule-item{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);padding:20px 22px;box-shadow:var(--shadow);border-left:3px solid rgba(200,98,47,.55)}
.rule-item h3{margin:0 0 6px;font-size:16px}
.rule-item p{margin:0;font-size:14px;color:var(--text-2);line-height:1.8}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px}
.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow);overflow:hidden}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 54px 18px 22px;font-size:15.5px;font-weight:600;color:var(--ink);
  transition:var(--ease-c);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;line-height:1;color:var(--copper);transition:transform .25s ease-out;
}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:hover{background:var(--zebra)}
.faq-body{margin:0;padding:0 22px 20px;font-size:14.5px;color:var(--text-2);line-height:1.85}

/* ---------- 文章卡 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;gap:10px;min-width:0;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--shadow);transition:var(--ease-m),var(--ease-c);
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.post-card h3{margin:0;font-size:16.5px;line-height:1.55;color:var(--ink)}
.post-card p{margin:0;font-size:14px;color:var(--text-2);line-height:1.75}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:auto;padding-top:10px;font-size:12.5px;color:var(--text-3)}
.empty-state{
  background:var(--zebra);border:1px dashed var(--line);border-radius:var(--r-lg);
  padding:32px 24px;text-align:center;color:var(--text-2);font-size:14.5px;
}
.empty-state .btn{margin-top:16px}

/* ---------- 底部分流 / 下载 ---------- */
.split-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.split-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;box-shadow:var(--shadow)}
.split-card h3{margin:0 0 8px;font-size:18px}
.split-card p{margin:0 0 16px;font-size:14px;color:var(--text-2);line-height:1.8}
.dl-btns{display:grid;gap:10px}
.dl-btn{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  min-height:48px;padding:12px 16px;border-radius:var(--r-sm);
  border:1.5px solid var(--ink);background:#fff;color:var(--ink);
  font-size:14px;font-weight:600;transition:var(--ease-c),var(--ease-m);
}
.dl-btn em{font-style:normal;font-size:12px;font-weight:500;color:var(--text-3)}
.dl-btn:hover{background:rgba(14,59,51,.06);transform:translateY(-1px)}
.dl-btn.is-primary{background:var(--copper);border-color:var(--copper);color:#fff}
.dl-btn.is-primary em{color:rgba(255,255,255,.82)}
.dl-btn.is-primary:hover{background:var(--copper-deep);border-color:var(--copper-deep)}
.dl-hint{margin:14px 0 0;font-size:12.5px;color:var(--text-3);line-height:1.7}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-deep);color:rgba(226,236,231,.78);padding:56px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.footer-brand .brand-mark{background:#14544A}
.footer-brand .brand-name{color:#fff}
.footer-desc{margin:0;font-size:14px;line-height:1.85;color:rgba(226,236,231,.72);max-width:360px}
.footer-col h4{margin:0 0 12px;font-size:14px;color:#fff;letter-spacing:.02em}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.footer-col a{color:rgba(226,236,231,.75);font-size:14px;transition:var(--ease-c)}
.footer-col a:hover{color:var(--copper)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:rgba(226,236,231,.6);line-height:1.7;
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .cat-hero-grid{grid-template-columns:1fr;gap:28px}
  .plan-item{grid-template-columns:1fr;gap:18px}
  .plan-side{border-left:0;border-top:1px dashed var(--line);padding-left:0;padding-top:16px}
  .rules-layout{grid-template-columns:1fr;gap:24px}
  .rules-side{position:static}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-4,.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-card{flex-wrap:wrap}
  .brand{order:1}
  .nav-actions{order:2;margin-left:auto}
  .nav-links{order:3;width:100%;overflow-x:auto;justify-content:flex-start;-webkit-overflow-scrolling:touch;scrollbar-width:none;padding-bottom:2px}
  .nav-links::-webkit-scrollbar{display:none}
}
@media (max-width:768px){
  .section{padding:48px 0}
  .container{padding:0 16px}
  .compare-grid,.split-grid,.grid-2,.grid-3,.grid-4,.post-grid{grid-template-columns:1fr}
  .overview-item{grid-template-columns:1fr;gap:10px}
  .overview-card{padding:4px 18px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
}
@media (max-width:560px){
  .param-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .compare-row{grid-template-columns:1fr;gap:4px}
  .brand-tag{display:none}
  .nav-actions .btn-ghost{display:none}
  .plan-item{padding:20px 18px}
}