/* roulang page: index */
:root{
  --ink:#0E2A23;
  --ink-2:#16372E;
  --lime:#C8F24B;
  --copper:#C96B3B;
  --sand:#F4F0E8;
  --paper:#FFFDF7;
  --text:#101C18;
  --muted:#66736C;
  --line:#D8D5CA;
  --err:#B4453A;
  --ok:#2F7A55;
  --r-card:18px;
  --r-img:15px;
  --r-btn:12px;
  --shadow:0 12px 32px rgba(14,42,35,.08);
  --shadow-hover:0 18px 40px rgba(14,42,35,.14);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --num:"Bahnschrift","DIN Alternate","Noto Sans SC",sans-serif;
  --nav-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
p{margin:0 0 16px}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:-.01em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(200,242,75,.55);border-radius:8px}
::selection{background:rgba(200,242,75,.6);color:var(--ink)}

/* ---------- 左侧竖向导航 ---------- */
.sidenav{
  position:fixed;left:0;top:0;bottom:0;width:var(--nav-w);
  background:var(--ink);
  display:flex;flex-direction:column;
  padding:26px 18px 20px;
  z-index:60;
  border-right:1px solid rgba(200,242,75,.10);
}
.brand{display:flex;gap:12px;align-items:center;padding:4px 6px 22px}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:11px;
  background:var(--lime);color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--num);font-weight:800;font-size:15px;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.3}
.brand-name{color:#FFFDF7;font-size:15px;font-weight:800;letter-spacing:.01em}
.brand-sub{color:rgba(255,253,247,.55);font-size:11.5px;letter-spacing:.04em;margin-top:3px}
.nav-label{color:rgba(255,253,247,.38);font-size:11.5px;letter-spacing:.16em;padding:0 10px;margin-bottom:10px}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-link{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:10px;
  color:rgba(255,253,247,.78);font-size:14.5px;font-weight:500;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.nav-link::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:20px;border-radius:3px;background:var(--lime);
  transition:transform .2s ease;
}
.nav-link:hover{background:rgba(200,242,75,.12);color:#FFFDF7}
.nav-link.is-active{background:rgba(200,242,75,.14);color:var(--lime);font-weight:700}
.nav-link.is-active::before{transform:translateY(-50%) scaleY(1)}
.nav-dot{width:6px;height:6px;border-radius:50%;background:rgba(200,242,75,.35);flex:0 0 6px}
.nav-link.is-active .nav-dot{background:var(--lime)}
.side-foot{margin-top:auto;padding-top:22px}
.side-card{
  background:rgba(255,253,247,.06);
  border:1px solid rgba(200,242,75,.18);
  border-radius:14px;padding:14px;
}
.side-card p{margin:0 0 10px;font-size:12.5px;color:rgba(255,253,247,.68);line-height:1.6}
.btn-mini{
  display:block;text-align:center;
  background:var(--lime);color:var(--ink);
  font-size:13px;font-weight:800;padding:9px 12px;border-radius:9px;
  transition:background .2s ease,color .2s ease;
}
.btn-mini:hover{background:#FFFDF7;color:var(--ink)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid rgba(200,242,75,.3);
  background:transparent;border-radius:11px;color:#FFFDF7;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-mask{
  display:none;position:fixed;inset:0;background:rgba(14,42,35,.6);z-index:65;
}
.nav-mask.is-show{display:block}

/* ---------- 主区域 ---------- */
main{margin-left:var(--nav-w);min-height:100vh}
.wrap{max-width:1240px;margin:0 auto;padding:0 48px}
.section{padding:76px 0}
.section.tight{padding:54px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(201,107,59,.12);color:var(--copper);
  font-size:12.5px;font-weight:700;letter-spacing:.06em;
  padding:6px 14px;border-radius:999px;
}
.eyebrow.lime{background:rgba(200,242,75,.22);color:#3F5A12}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:34px;flex-wrap:wrap}
.sec-title{font-size:clamp(26px,2.6vw,34px);line-height:1.25;margin:10px 0 0}
.sec-desc{color:var(--muted);font-size:16px;max-width:760px;margin:12px 0 0}
.text-link{
  color:var(--ink);font-weight:700;font-size:14.5px;
  border-bottom:2px solid transparent;transition:border-color .2s ease,color .2s ease;
}
.text-link:hover{border-color:var(--lime);color:#20463A}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:64px 0 72px;
  background:
    radial-gradient(circle at 88% 12%, rgba(200,242,75,.20), transparent 42%),
    linear-gradient(180deg,#F7F3EB 0%,var(--sand) 100%);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-60px;bottom:-40px;width:320px;height:320px;
  background-image:radial-gradient(rgba(14,42,35,.16) 1.5px, transparent 1.5px);
  background-size:18px 18px;opacity:.55;pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center;position:relative;z-index:1}
.hero h1{
  font-size:clamp(36px,4.4vw,60px);
  font-weight:800;line-height:1.12;letter-spacing:-.02em;
  margin:18px 0 0;
}
.hero h1 em{font-style:normal;color:#20463A;background:linear-gradient(180deg,transparent 62%,rgba(200,242,75,.75) 62%)}
.lead{font-size:17.5px;color:#3A4A43;margin:20px 0 0;max-width:560px;line-height:1.8}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.hero-points{display:flex;gap:22px;flex-wrap:wrap;margin-top:30px;padding-top:24px;border-top:1px solid var(--line)}
.hero-points li{font-size:13.5px;color:var(--muted);display:flex;align-items:center;gap:8px}
.hero-points li::before{
  content:"";width:7px;height:7px;border-radius:2px;background:var(--copper);transform:rotate(45deg);
}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:20px;border:1px solid rgba(14,42,35,.12);
  box-shadow:0 24px 60px rgba(14,42,35,.18);
}
.hero-figure::before{
  content:"";position:absolute;inset:0;border-radius:20px;
  background:linear-gradient(180deg,rgba(14,42,35,.05) 0%,rgba(14,42,35,.42) 100%);
  pointer-events:none;
}
.hero-info{
  position:absolute;left:16px;right:16px;bottom:16px;
  background:rgba(14,42,35,.92);
  border:1px solid rgba(200,242,75,.28);
  border-radius:14px;padding:14px 16px;
  display:grid;grid-template-columns:repeat(3,1fr);gap:10px;
}
.hero-info div{display:flex;flex-direction:column;gap:2px}
.hero-info b{color:var(--lime);font-family:var(--num);font-size:15px;letter-spacing:.02em}
.hero-info span{color:rgba(255,253,247,.62);font-size:11.5px;line-height:1.5}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;line-height:1.2;
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.btn-primary:hover{background:var(--ink);color:var(--lime);border-color:var(--ink);transform:translateY(-1px);box-shadow:0 10px 24px rgba(14,42,35,.22)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(14,42,35,.34)}
.btn-ghost:hover{background:rgba(200,242,75,.28);border-color:var(--ink);transform:translateY(-1px)}
.btn-dark{background:var(--ink);color:#FFFDF7;border-color:var(--ink)}
.btn-dark:hover{background:#0A2019;color:var(--lime);transform:translateY(-1px)}
.btn-lg{padding:16px 34px;font-size:16px}
.btn-block{width:100%}

/* ---------- Bento 价值区 ---------- */
.bento{display:grid;grid-template-columns:1.35fr 1fr;grid-template-rows:auto auto;gap:22px}
.bento-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.bento-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--lime)}
.bento-main{grid-row:span 2;position:relative;overflow:hidden}
.bento-main img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);margin-bottom:22px;
}
.bento-icon{
  width:44px;height:44px;border-radius:12px;background:rgba(200,242,75,.28);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--ink);
}
.bento-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.bento-card h3{font-size:21px;line-height:1.35;margin-bottom:10px}
.bento-card p{color:var(--muted);font-size:15px;margin-bottom:16px}
.bento-card .text-link{margin-top:auto}
.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.tag{
  font-size:12px;font-weight:700;color:#3F5A12;background:rgba(200,242,75,.24);
  padding:4px 11px;border-radius:999px;
}
.tag.copper{color:#8A4526;background:rgba(201,107,59,.14)}

/* ---------- 截图轮播 ---------- */
.shots-wrap{position:relative}
.shots{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 2px 18px;scrollbar-width:thin;
}
.shots::-webkit-scrollbar{height:6px}
.shots::-webkit-scrollbar-thumb{background:rgba(14,42,35,.22);border-radius:99px}
.shot{
  flex:0 0 calc(33.333% - 14px);scroll-snap-align:start;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.shot:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--copper)}
.shot img{width:100%;aspect-ratio:16/10;object-fit:cover}
.shot-body{padding:18px 20px 20px}
.shot-body h3{font-size:17px;margin-bottom:6px}
.shot-body p{font-size:13.5px;color:var(--muted);margin:0}
.shot-nav{display:flex;align-items:center;gap:10px;margin-top:18px}
.shot-btn{
  width:44px;height:44px;border-radius:12px;border:1px solid rgba(14,42,35,.28);
  background:transparent;color:var(--ink);display:flex;align-items:center;justify-content:center;
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.shot-btn:hover{background:var(--lime);border-color:var(--lime);transform:translateY(-1px)}
.shot-btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.shot-hint{font-size:13px;color:var(--muted);margin-left:6px}

/* ---------- 系统要求 ---------- */
.req-band{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;display:grid;grid-template-columns:1.5fr .9fr;gap:36px;align-items:center;
}
.req-list{display:grid;gap:0}
.req-list div{
  display:flex;justify-content:space-between;gap:18px;align-items:baseline;
  padding:15px 0;border-bottom:1px dashed var(--line);
}
.req-list div:last-child{border-bottom:none}
.req-list dt{color:var(--muted);font-size:14px;font-weight:600;flex:0 0 auto}
.req-list dd{margin:0;font-size:15px;font-weight:700;color:var(--ink);text-align:right}
.req-side{background:rgba(200,242,75,.16);border-radius:14px;padding:24px;text-align:center}
.req-side p{font-size:13.5px;color:#3F5A12;margin-bottom:16px;font-weight:600}

/* ---------- 评价墙 ---------- */
.quotes{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:start}
.quotes .q-col:last-child{margin-top:34px}
.quote{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;margin-bottom:22px;position:relative;
  transition:transform .2s ease,box-shadow .2s ease;
}
.quote:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.quote::before{
  content:"“";position:absolute;top:10px;right:20px;font-size:38px;line-height:1;
  color:rgba(201,107,59,.28);font-family:Georgia,serif;
}
.quote p{font-size:15px;color:#28392F;margin:0 0 18px}
.quote.dark{background:var(--ink-2);border-color:rgba(200,242,75,.22)}
.quote.dark p{color:rgba(255,253,247,.9)}
.quote.dark::before{color:rgba(200,242,75,.35)}
.quote.dark .q-meta b{color:#FFFDF7}
.quote.dark .q-meta span{color:rgba(255,253,247,.5)}
.quote.dark .q-tag{background:rgba(200,242,75,.16);color:var(--lime)}
.q-meta{display:flex;align-items:center;gap:12px}
.q-avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 40px;
  background:rgba(200,242,75,.3);color:#20463A;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;
}
.quote.dark .q-avatar{background:rgba(200,242,75,.24);color:var(--lime)}
.q-meta b{display:block;font-size:14px;color:var(--ink);line-height:1.4}
.q-meta span{display:block;font-size:12.5px;color:var(--muted)}
.q-tag{
  margin-left:auto;font-size:11.5px;font-weight:700;padding:4px 10px;border-radius:999px;
  background:rgba(201,107,59,.13);color:#8A4526;white-space:nowrap;
}

/* ---------- 下载 CTA ---------- */
.dl-card{
  background:var(--ink);border-radius:24px;padding:44px;
  display:grid;grid-template-columns:1.35fr .65fr;gap:40px;align-items:center;
  position:relative;overflow:hidden;
}
.dl-card::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  border:1px solid rgba(200,242,75,.22);
}
.dl-card::after{
  content:"";position:absolute;right:-20px;bottom:-100px;width:220px;height:220px;border-radius:50%;
  border:1px solid rgba(200,242,75,.14);
}
.dl-card h2{color:#FFFDF7;font-size:clamp(26px,2.6vw,34px);line-height:1.25}
.dl-card .dl-sub{color:rgba(255,253,247,.66);font-size:15px;margin:14px 0 26px;max-width:520px}
.dl-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1}
.dl-actions .btn-ghost{color:#FFFDF7;border-color:rgba(255,253,247,.4)}
.dl-actions .btn-ghost:hover{background:rgba(200,242,75,.2);color:#FFFDF7;border-color:var(--lime)}
.dl-note{display:flex;gap:20px;flex-wrap:wrap;margin-top:24px;position:relative;z-index:1}
.dl-note a{color:rgba(255,253,247,.7);font-size:13.5px;border-bottom:1px solid rgba(200,242,75,.35);padding-bottom:2px;transition:color .2s ease}
.dl-note a:hover{color:var(--lime)}
.qr-box{
  background:rgba(255,253,247,.06);border:1px solid rgba(200,242,75,.24);
  border-radius:18px;padding:22px;text-align:center;position:relative;z-index:1;
}
.qr-code{
  width:100%;aspect-ratio:1;border-radius:12px;background:#FFFDF7;
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
  background-image:
    repeating-linear-gradient(90deg,rgba(14,42,35,.85) 0 6px,transparent 6px 12px),
    repeating-linear-gradient(0deg,rgba(14,42,35,.85) 0 6px,transparent 6px 12px);
  background-size:24px 24px;background-blend-mode:multiply;
  max-width:200px;margin-left:auto;margin-right:auto;
}
.qr-box p{color:rgba(255,253,247,.62);font-size:12.5px;margin:0}

/* ---------- CMS 资讯列表 ---------- */
.news-lead{
  display:grid;grid-template-columns:1.05fr 1fr;gap:0;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  margin-bottom:22px;
}
.news-lead:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--lime)}
.news-lead-img{position:relative;min-height:280px}
.news-lead-img img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.news-lead-body{padding:32px}
.news-lead-body h3{font-size:23px;line-height:1.4;margin:12px 0 12px}
.news-lead-body h3 a:hover{color:#20463A}
.news-lead-body p{color:var(--muted);font-size:15px;margin-bottom:18px}
.meta-row{display:flex;gap:14px;align-items:center;flex-wrap:wrap;font-size:12.5px;color:var(--muted)}
.meta-row .badge{
  background:rgba(201,107,59,.13);color:#8A4526;font-weight:700;
  padding:3px 11px;border-radius:999px;font-size:11.5px;
}
.news-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.news-item{
  display:flex;gap:16px;align-items:center;
  background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:16px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--lime)}
.news-item img{
  width:72px;height:72px;flex:0 0 72px;object-fit:cover;border-radius:10px;
}
.news-item h4{font-size:15.5px;line-height:1.5;margin:0 0 6px;font-weight:700}
.news-item h4 a:hover{color:#20463A}
.news-item .meta-row{font-size:12px;gap:10px}
.empty-state{
  background:var(--paper);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:48px 32px;text-align:center;
}
.empty-state .empty-ico{
  width:64px;height:64px;border-radius:18px;background:rgba(200,242,75,.28);
  margin:0 auto 18px;display:flex;align-items:center;justify-content:center;color:#20463A;
}
.empty-state .empty-ico svg{width:28px;height:28px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.empty-state h3{font-size:19px;margin-bottom:8px}
.empty-state p{color:var(--muted);font-size:14.5px;margin-bottom:20px}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:22px 44px 22px 20px;position:relative;
  font-size:18px;font-weight:700;color:var(--ink);line-height:1.5;
  transition:color .2s ease,background .2s ease;border-radius:10px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:3px;
  background:var(--lime);transform:scaleY(.35);transform-origin:top;
  transition:transform .24s ease;
}
.faq-item summary::after{
  content:"";position:absolute;right:14px;top:50%;width:12px;height:12px;
  border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:translateY(-70%) rotate(45deg);transition:transform .24s ease,border-color .2s ease;
}
.faq-item[open] summary::before{transform:scaleY(1)}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg);border-color:var(--ink)}
.faq-item summary:hover{color:#20463A;background:rgba(200,242,75,.10)}
.faq-answer{padding:0 44px 22px 20px;font-size:16px;line-height:1.85;color:#3A4A43}
.faq-answer p:last-child{margin-bottom:0}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,253,247,.74);margin-left:var(--nav-w)}
.footer-inner{max-width:1240px;margin:0 auto;padding:60px 48px 30px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand{display:flex;gap:12px;align-items:center;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--lime)}
.footer-brand b{color:#FFFDF7;font-size:16px;letter-spacing:.01em}
.footer-about{font-size:13.5px;line-height:1.9;color:rgba(255,253,247,.58);max-width:340px}
.footer-col h4{color:#FFFDF7;font-size:14px;letter-spacing:.05em;margin-bottom:16px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:13.5px;color:rgba(255,253,247,.66);transition:color .2s ease}
.footer-col a:hover{color:var(--lime)}
.footer-dl{display:inline-flex;align-items:center;gap:8px;background:rgba(200,242,75,.14);border:1px solid rgba(200,242,75,.3);color:var(--lime);padding:10px 16px;border-radius:10px;font-size:13.5px;font-weight:700;transition:background .2s ease,color .2s ease}
.footer-dl:hover{background:var(--lime);color:var(--ink)}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid rgba(255,253,247,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,253,247,.45);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--nav-w:216px}
  .wrap{padding:0 32px}
  .footer-inner{padding:54px 32px 28px}
  .hero-grid{gap:36px}
  .dl-card{padding:36px}
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-figure img{aspect-ratio:16/9}
  .bento{grid-template-columns:1fr}
  .bento-main{grid-row:auto}
  .req-band{grid-template-columns:1fr;gap:24px}
  .dl-card{grid-template-columns:1fr;gap:28px}
  .news-lead{grid-template-columns:1fr}
  .news-lead-img{min-height:220px;position:relative;height:220px}
  .news-list{grid-template-columns:1fr}
  .shot{flex:0 0 calc(50% - 10px)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .sidenav{
    width:100%;height:64px;bottom:auto;flex-direction:row;align-items:center;
    justify-content:space-between;padding:0 16px;border-right:none;
    border-bottom:1px solid rgba(200,242,75,.16);
  }
  .brand{padding:0;align-items:center}
  .brand-sub{display:none}
  .brand-name{font-size:14px;max-width:190px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .nav-toggle{display:flex}
  .nav-label{display:none}
  .nav-list{
    position:fixed;top:0;left:0;bottom:0;width:290px;max-width:84vw;
    background:var(--paper);flex-direction:column;gap:4px;
    padding:84px 16px 24px;overflow-y:auto;z-index:70;
    transform:translateX(-102%);transition:transform .28s ease;
    box-shadow:0 0 60px rgba(14,42,35,.35);
  }
  .sidenav.is-open .nav-list{transform:translateX(0)}
  .nav-link{color:var(--ink);font-size:15px;padding:13px 12px;border-radius:10px;min-height:48px}
  .nav-link:hover{background:rgba(200,242,75,.28);color:var(--ink)}
  .nav-link.is-active{background:rgba(200,242,75,.34);color:var(--ink);font-weight:700}
  .nav-link.is-active::before{background:#20463A}
  .nav-dot{background:rgba(14,42,35,.25)}
  .nav-link.is-active .nav-dot{background:#20463A}
  .side-foot{
    margin-top:20px;padding-top:18px;border-top:1px solid var(--line);
  }
  .side-card{background:rgba(200,242,75,.16);border-color:rgba(14,42,35,.12)}
  .side-card p{color:#3F5A12}
  .btn-mini{background:var(--ink);color:var(--lime)}
  .btn-mini:hover{background:#0A2019;color:var(--lime)}
  main{margin-left:0;padding-top:64px}
  .site-footer{margin-left:0}
}
@media (max-width:640px){
  .wrap{padding:0 18px}
  .section{padding:52px 0}
  .section.tight{padding:40px 0}
  .hero{padding:40px 0 52px}
  .hero h1{font-size:32px}
  .lead{font-size:16px}
  .hero-actions .btn{width:100%}
  .hero-info{position:static;margin-top:14px;grid-template-columns:1fr;gap:8px;border-radius:14px}
  .hero-info div{flex-direction:row;justify-content:space-between;align-items:baseline}
  .hero-figure::before{display:none}
  .bento-card,.req-band,.quote{padding:20px}
  .dl-card{padding:26px 20px;border-radius:18px}
  .dl-actions .btn{width:100%}
  .shot{flex:0 0 86%}
  .quotes{grid-template-columns:1fr}
  .quotes .q-col:last-child{margin-top:0}
  .news-lead-body{padding:22px}
  .news-lead-body h3{font-size:19px}
  .faq-item summary{font-size:16.5px;padding:18px 40px 18px 16px}
  .faq-answer{padding:0 16px 18px 16px;font-size:15.5px}
  .footer-inner{padding:40px 18px 24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .sec-title{font-size:24px}
}
@media (max-width:400px){
  .wrap{padding:0 16px}
  .footer-inner{padding:36px 16px 22px}
  .hero::after{display:none}
  .news-item{flex-direction:column;align-items:flex-start}
  .news-item img{width:100%;height:auto;aspect-ratio:16/10;flex:none}
}

/* roulang page: article */
:root{
  --ink:#0E2A23;
  --ink-soft:#16372E;
  --lime:#C8F24B;
  --lime-soft:rgba(200,242,75,.16);
  --copper:#C96B3B;
  --sand:#F4F0E8;
  --paper:#FFFDF7;
  --text:#101C18;
  --muted:#66736C;
  --line:#D8D5CA;
  --err:#B4453A;
  --ok:#2F7A55;
  --radius-card:18px;
  --radius-img:16px;
  --radius-btn:12px;
  --shadow:0 12px 32px rgba(14,42,35,.08);
  --shadow-hover:0 18px 40px rgba(14,42,35,.14);
  --nav-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
body.nav-lock{overflow:hidden}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:16px}
:focus-visible{outline:3px solid rgba(200,242,75,.55);outline-offset:2px;border-radius:6px}

/* ============ 左侧导航 ============ */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  background:var(--ink);
  color:#EDEADF;
  display:flex;
  flex-direction:column;
  padding:26px 18px 22px;
  z-index:80;
  overflow-y:auto;
  transition:transform .28s ease;
}
.brand-lock{
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 6px 22px;
  border-bottom:1px solid rgba(237,234,223,.14);
  margin-bottom:22px;
}
.brand-mark{
  width:38px;height:38px;
  flex:0 0 38px;
  display:flex;align-items:center;justify-content:center;
  background:var(--lime);
  color:var(--ink);
  font-family:"Bahnschrift","DIN Alternate",sans-serif;
  font-weight:800;
  font-size:14px;
  letter-spacing:.02em;
  border-radius:11px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text b{font-size:15px;font-weight:800;color:#FFFDF7;letter-spacing:.01em}
.brand-text span{font-size:11.5px;color:rgba(237,234,223,.62);letter-spacing:.06em}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-link{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  padding:11px 14px 11px 20px;
  border-radius:12px;
  font-size:15px;
  color:rgba(237,234,223,.8);
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.nav-dot{
  width:6px;height:6px;
  flex:0 0 6px;
  border-radius:50%;
  background:rgba(237,234,223,.4);
  transition:background .2s ease,box-shadow .2s ease;
}
.nav-link:hover{background:rgba(200,242,75,.12);color:#FFFDF7}
.nav-link:hover .nav-dot{background:var(--lime)}
.nav-link.is-active{
  background:rgba(200,242,75,.14);
  color:#FFFDF7;
  font-weight:700;
}
.nav-link.is-active::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  border-radius:3px;
  background:var(--lime);
}
.nav-link.is-active .nav-dot{background:var(--lime);box-shadow:0 0 0 4px rgba(200,242,75,.18)}
.side-foot{margin-top:auto;padding-top:24px}
.side-note{
  font-size:12px;
  color:rgba(237,234,223,.55);
  line-height:1.7;
  padding:0 6px 12px;
}
.side-dl{
  display:flex;align-items:center;justify-content:center;gap:8px;
  width:100%;
  padding:11px 12px;
  border-radius:var(--radius-btn);
  background:var(--lime);
  color:var(--ink);
  font-weight:700;
  font-size:14px;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.side-dl:hover{background:#FFFDF7;color:var(--ink);transform:translateY(-1px)}
.side-dl:active{transform:translateY(0)}
.nav-mask{
  position:fixed;inset:0;
  background:rgba(14,42,35,.6);
  opacity:0;pointer-events:none;
  transition:opacity .25s ease;
  z-index:70;
}
.nav-mask.is-open{opacity:1;pointer-events:auto}

/* ============ 主区域 ============ */
.main-shell{
  margin-left:var(--nav-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 48px;
}
.mobile-bar{display:none}

/* ============ 面包屑 ============ */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:30px 0 0;
  font-size:13.5px;
  color:var(--muted);
}
.crumbs a{color:var(--muted);transition:color .18s ease}
.crumbs a:hover{color:var(--ink);text-decoration:underline;text-decoration-color:var(--lime);text-underline-offset:4px}
.crumbs .sep{color:#B3B0A4}
.crumbs .current{color:var(--ink);font-weight:600;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头 ============ */
.article-head{padding:26px 0 0;max-width:900px}
.badge-copper{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border-radius:999px;
  background:rgba(201,107,59,.12);
  color:var(--copper);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.02em;
}
.article-head h1{
  margin-top:16px;
  font-size:clamp(30px,3.6vw,48px);
  line-height:1.22;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--ink);
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  margin-top:20px;
  font-size:13.5px;
  color:var(--muted);
}
.article-meta i{color:var(--copper);margin-right:6px}
.meta-chip{
  display:inline-flex;align-items:center;
  padding:4px 10px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--paper);
  font-size:12.5px;
}
.article-lead{
  margin-top:24px;
  padding:20px 24px;
  border-left:4px solid var(--lime);
  border-radius:0 14px 14px 0;
  background:var(--paper);
  border-top:1px solid var(--line);
  border-right:1px solid var(--line);
  border-bottom:1px solid var(--line);
  font-size:16.5px;
  color:#2C3A34;
  line-height:1.85;
}

/* ============ 封面 ============ */
.article-cover{
  margin:32px 0 0;
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--ink-soft);
}
.article-cover img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}

/* ============ 正文布局 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:44px;
  align-items:start;
  padding:36px 0 8px;
}
.article-body{
  min-width:0;
  max-width:820px;
  font-size:16.5px;
  line-height:1.85;
  color:#1C2A24;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 20px}
.article-body h2{
  margin:42px 0 16px;
  font-size:clamp(22px,2.2vw,29px);
  line-height:1.35;
  font-weight:800;
  color:var(--ink);
  padding-left:14px;
  border-left:5px solid var(--lime);
}
.article-body h3{
  margin:30px 0 12px;
  font-size:20px;
  line-height:1.45;
  font-weight:700;
  color:var(--ink);
}
.article-body h4{
  margin:24px 0 10px;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:4px}
.article-body ul li,.article-body ol li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:2px;top:11px;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--lime);
  box-shadow:0 0 0 1px rgba(14,42,35,.12);
}
.article-body ol{counter-reset:item}
.article-body ol li{counter-increment:item}
.article-body ol li::before{
  content:counter(item);
  position:absolute;
  left:0;top:4px;
  width:18px;height:18px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--ink);
  color:var(--lime);
  font-family:"Bahnschrift","DIN Alternate",sans-serif;
  font-size:11px;
  font-weight:700;
}
.article-body blockquote{
  margin:26px 0;
  padding:18px 24px;
  background:var(--paper);
  border-left:4px solid var(--copper);
  border-radius:0 14px 14px 0;
  color:#3A4740;
  font-size:16px;
}
.article-body img{
  border-radius:var(--radius-img);
  margin:24px 0 10px;
  border:1px solid var(--line);
  height:auto;
}
.article-body a{
  color:var(--ink);
  font-weight:600;
  text-decoration:underline;
  text-decoration-color:var(--lime);
  text-decoration-thickness:2px;
  text-underline-offset:4px;
  transition:color .18s ease;
}
.article-body a:hover{color:var(--ok)}
.article-body hr{
  margin:34px 0;
  border:0;
  border-top:1px solid var(--line);
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:22px 0;
  font-size:15px;
  background:var(--paper);
  border-radius:12px;
  overflow:hidden;
}
.article-body th,.article-body td{
  padding:12px 14px;
  border-bottom:1px solid var(--line);
  text-align:left;
}
.article-body th{background:rgba(200,242,75,.18);font-weight:700;color:var(--ink)}
.article-body code{
  background:rgba(14,42,35,.06);
  padding:2px 6px;
  border-radius:6px;
  font-size:14px;
}

/* ============ 侧栏 ============ */
.article-side{
  position:sticky;
  top:28px;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.side-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px;
  box-shadow:var(--shadow);
}
.side-card h3{
  font-size:15px;
  font-weight:800;
  color:var(--ink);
  margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.side-card h3 i{color:var(--copper);font-size:13px}
.side-links{display:flex;flex-direction:column;gap:2px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;
  gap:8px;
  padding:9px 10px;
  border-radius:10px;
  font-size:14px;
  color:#33413A;
  transition:background .18s ease,color .18s ease,padding-left .18s ease;
}
.side-links a i{font-size:11px;color:#B0ADA1;transition:color .18s ease,transform .18s ease}
.side-links a:hover{background:var(--lime-soft);color:var(--ink);padding-left:14px}
.side-links a:hover i{color:var(--ink);transform:translateX(2px)}
.side-card.dark{
  background:var(--ink-soft);
  border-color:rgba(200,242,75,.24);
  color:#EDEADF;
}
.side-card.dark h3{color:#FFFDF7}
.side-card.dark p{font-size:13.5px;color:rgba(237,234,223,.75);line-height:1.75;margin-bottom:16px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  padding:13px 26px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  border:1px solid transparent;
}
.btn-primary{background:var(--lime);color:var(--ink);box-shadow:0 8px 20px rgba(200,242,75,.28)}
.btn-primary:hover{background:var(--ink);color:var(--lime);transform:translateY(-1px);box-shadow:0 12px 26px rgba(14,42,35,.22)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--lime-soft);border-color:var(--ink);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-block{width:100%}
.btn-sm{padding:10px 18px;font-size:14px}

/* ============ 正文内下载条 ============ */
.dl-strip{
  margin:38px 0 8px;
  background:var(--ink);
  color:#EDEADF;
  border-radius:var(--radius-card);
  padding:30px 32px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  position:relative;
  overflow:hidden;
}
.dl-strip::after{
  content:"";
  position:absolute;
  right:-40px;top:-40px;
  width:180px;height:180px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(200,242,75,.22),transparent 68%);
  pointer-events:none;
}
.dl-strip h3{font-size:21px;font-weight:800;color:#FFFDF7;margin-bottom:6px}
.dl-strip p{font-size:14px;color:rgba(237,234,223,.76);line-height:1.7;max-width:520px}
.dl-strip .actions{display:flex;gap:12px;flex-wrap:wrap}
.dl-strip .btn-primary:hover{background:#FFFDF7;color:var(--ink)}

/* ============ 相关推荐 ============ */
.related-block{padding:20px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:22px}
.section-head h2{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:800;
  color:var(--ink);
  letter-spacing:-.01em;
  line-height:1.3;
}
.section-head p{font-size:14px;color:var(--muted);margin-top:6px}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
}
.rel-card{
  display:flex;
  flex-direction:column;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  box-shadow:var(--shadow);
}
.rel-card:hover{transform:translateY(-2px);border-color:var(--lime);box-shadow:var(--shadow-hover)}
.rel-card img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.rel-body .tag{
  align-self:flex-start;
  font-size:12px;
  font-weight:700;
  color:var(--copper);
  background:rgba(201,107,59,.1);
  padding:3px 10px;
  border-radius:999px;
}
.rel-body h3{font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.5}
.rel-body p{font-size:13.5px;color:var(--muted);line-height:1.7;flex:1}
.rel-body .more{font-size:13.5px;font-weight:700;color:var(--ink);display:inline-flex;align-items:center;gap:6px}
.rel-card:hover .more{color:var(--ok)}

/* ============ 空态 ============ */
.empty-state{
  background:var(--paper);
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  padding:52px 32px;
  text-align:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:14px;
}
.empty-state .icon{
  width:64px;height:64px;
  border-radius:20px;
  display:flex;align-items:center;justify-content:center;
  background:var(--lime-soft);
  color:var(--ink);
  font-size:26px;
}
.empty-state h2{font-size:22px;font-weight:800;color:var(--ink)}
.empty-state p{font-size:15px;color:var(--muted);max-width:460px;line-height:1.8}

/* ============ 返回条 ============ */
.back-bar{
  margin:38px 0 0;
  padding:20px 24px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--paper);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
}
.back-bar span{font-size:14px;color:var(--muted)}
.back-links{display:flex;flex-wrap:wrap;gap:10px}
.back-links a{
  font-size:13.5px;
  font-weight:600;
  padding:8px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--ink);
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.back-links a:hover{background:var(--lime-soft);border-color:var(--lime)}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#E9E6DA;margin-top:64px}
.footer-inner{max-width:1240px;margin:0 auto;padding:56px 48px 26px}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1fr;
  gap:34px;
  padding-bottom:34px;
  border-bottom:1px solid rgba(237,234,223,.14);
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:14px}
.footer-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:12.5px;border-radius:10px}
.footer-brand b{font-size:16px;font-weight:800;color:#FFFDF7}
.footer-about{font-size:13.5px;line-height:1.85;color:rgba(237,234,223,.66);max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;color:#FFFDF7;margin-bottom:14px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:9px}
.footer-col a{
  font-size:13.5px;
  color:rgba(237,234,223,.7);
  transition:color .18s ease,padding-left .18s ease;
}
.footer-col a:hover{color:var(--lime);padding-left:4px}
.footer-dl{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:8px 14px;
  border-radius:10px;
  background:var(--lime);
  color:var(--ink) !important;
  font-weight:700;
}
.footer-dl:hover{background:#FFFDF7;padding-left:14px !important}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  padding-top:22px;
  font-size:12.5px;
  color:rgba(237,234,223,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--nav-w:216px}
  .container{padding:0 32px}
  .footer-inner{padding:48px 32px 24px}
  .article-layout{grid-template-columns:minmax(0,1fr) 264px;gap:32px}
}
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .article-side .side-card{flex:1 1 260px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .side-nav{
    width:284px;
    transform:translateX(-100%);
    box-shadow:0 0 40px rgba(0,0,0,.3);
    padding-top:22px;
  }
  .side-nav.is-open{transform:translateX(0)}
  .side-nav .nav-close{
    position:absolute;
    top:14px;right:14px;
    width:44px;height:44px;
    display:flex;align-items:center;justify-content:center;
    border-radius:12px;
    color:#EDEADF;
    background:rgba(237,234,223,.08);
    font-size:16px;
  }
  .side-nav .nav-close:hover{background:rgba(200,242,75,.2)}
  .main-shell{margin-left:0}
  .mobile-bar{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    position:sticky;
    top:0;
    z-index:60;
    height:64px;
    padding:0 20px;
    background:var(--ink);
    color:#FFFDF7;
    box-shadow:0 6px 18px rgba(14,42,35,.18);
  }
  .mobile-bar .brand-lock{padding:0;border:0;margin:0;gap:10px}
  .mobile-bar .brand-text b{font-size:14.5px}
  .mobile-bar .brand-text span{font-size:11px}
  .mobile-bar .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:12.5px;border-radius:10px}
  .burger{
    width:44px;height:44px;
    display:flex;align-items:center;justify-content:center;
    border-radius:12px;
    background:rgba(237,234,223,.1);
    color:#FFFDF7;
    font-size:17px;
    transition:background .2s ease;
  }
  .burger:hover{background:rgba(200,242,75,.24);color:#FFFDF7}
  .container{padding:0 24px}
  .crumbs{padding-top:22px}
  .footer-inner{padding:44px 24px 22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .article-head{padding-top:20px}
  .article-head h1{font-size:28px;line-height:1.3}
  .article-lead{padding:16px 18px;font-size:15.5px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:21px;margin-top:34px}
  .article-body h3{font-size:18px;margin-top:26px}
  .dl-strip{padding:24px 20px;flex-direction:column;align-items:flex-start}
  .dl-strip .actions{width:100%;flex-direction:column}
  .dl-strip .actions .btn{width:100%}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .article-side{flex-direction:column}
  .back-bar{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;gap:6px}
  .article-meta{gap:8px 16px;font-size:13px}
  .section-head h2{font-size:23px}
}
@media (max-width:400px){
  .container{padding:0 16px}
  .mobile-bar{padding:0 14px}
  .mobile-bar .brand-text span{display:none}
  .article-head h1{font-size:25px}
  .btn{padding:12px 18px;font-size:14px}
}

/* roulang page: category1 */
:root{
  --ink:#0E2A23;
  --lime:#C8F24B;
  --copper:#C96B3B;
  --sand:#F4F0E8;
  --paper:#FFFDF7;
  --deep:#16372E;
  --text:#101C18;
  --muted:#66736C;
  --line:#D8D5CA;
  --error:#B4453A;
  --ok:#2F7A55;
  --radius:18px;
  --radius-sm:12px;
  --radius-lg:24px;
  --shadow:0 12px 32px rgba(14,42,35,.08);
  --shadow-soft:0 4px 14px rgba(14,42,35,.06);
  --sidebar-w:248px;
  --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Bahnschrift","DIN Alternate","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--ink);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--ink);}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:3px solid rgba(200,242,75,.55);
  outline-offset:2px;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.25;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
::selection{background:var(--lime);color:var(--ink);}

/* ---------- 侧栏导航 ---------- */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--ink);
  color:#E9EFE6;
  display:flex;
  flex-direction:column;
  padding:26px 0 22px;
  z-index:60;
  transition:transform .28s ease;
}
.sidebar-brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 20px 22px;
  border-bottom:1px solid rgba(244,240,232,.14);
}
.brand-mark{
  flex:0 0 auto;
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:11px;
  background:var(--lime);
  color:var(--ink);
  font-family:var(--font-num);
  font-weight:800;
  font-size:13px;
  letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;min-width:0;}
.brand-text b{font-size:15px;color:#F7F5EE;font-weight:700;letter-spacing:.01em;}
.brand-text small{font-size:11.5px;color:rgba(233,239,230,.6);letter-spacing:.02em;}
.sidebar-label{
  font-size:11.5px;
  letter-spacing:.16em;
  color:rgba(233,239,230,.42);
  padding:22px 22px 10px;
}
.nav-list{display:flex;flex-direction:column;gap:4px;padding:0 12px;}
.nav-link{
  display:flex;align-items:center;gap:10px;
  padding:12px 14px 12px 16px;
  border-radius:12px;
  font-size:15px;
  font-weight:600;
  color:rgba(233,239,230,.76);
  position:relative;
  transition:background-color .18s ease,color .18s ease,box-shadow .18s ease;
}
.nav-link:hover{background:rgba(200,242,75,.12);color:#F7F5EE;}
.nav-link:active{transform:translateY(1px);}
.nav-link.is-active{
  background:rgba(200,242,75,.16);
  color:var(--lime);
  box-shadow:inset 3px 0 0 var(--lime);
}
.nav-dot{
  width:6px;height:6px;border-radius:50%;
  background:currentColor;
  opacity:.5;
  flex:0 0 auto;
  transition:opacity .18s ease,transform .18s ease;
}
.nav-link:hover .nav-dot,.nav-link.is-active .nav-dot{opacity:1;transform:scale(1.25);}
.sidebar-foot{
  margin-top:auto;
  padding:18px 20px 0;
  border-top:1px solid rgba(244,240,232,.14);
}
.sidebar-foot p{
  margin:12px 0 0;
  font-size:12px;
  line-height:1.7;
  color:rgba(233,239,230,.55);
}
.sidebar-foot .btn{width:100%;justify-content:center;}

/* ---------- 顶部移动导航 ---------- */
.topbar{
  display:none;
  position:sticky;top:0;z-index:70;
  height:64px;
  padding:0 16px;
  align-items:center;
  gap:12px;
  background:var(--ink);
  border-bottom:1px solid rgba(244,240,232,.12);
}
.hamburger{
  width:44px;height:44px;
  border:1px solid rgba(244,240,232,.22);
  border-radius:12px;
  background:transparent;
  display:inline-flex;align-items:center;justify-content:center;
  position:relative;
}
.hamburger span,
.hamburger span::before,
.hamburger span::after{
  display:block;
  width:18px;height:2px;
  background:var(--lime);
  border-radius:2px;
  content:"";
  transition:transform .2s ease,opacity .2s ease;
}
.hamburger span::before{position:absolute;transform:translateY(-6px);}
.hamburger span::after{position:absolute;transform:translateY(6px);}
.topbar-brand{
  font-size:15px;font-weight:700;color:#F7F5EE;
  flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.topbar-dl{
  font-size:13.5px;font-weight:700;
  color:var(--ink);background:var(--lime);
  padding:8px 14px;border-radius:10px;white-space:nowrap;
}
.topbar-dl:hover{background:#d8fa6e;color:var(--ink);}
.drawer-mask{
  display:none;
  position:fixed;inset:0;
  background:rgba(14,42,35,.6);
  z-index:55;
  border:0;padding:0;
}
.drawer-mask.is-open{display:block;}

/* ---------- 主内容 ---------- */
.main{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
  background:var(--sand);
}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 48px;
}
.section{padding:72px 0;}
.section--tight{padding:56px 0;}
.section-head{max-width:800px;margin-bottom:38px;}
.section-head h2{font-size:32px;letter-spacing:-.01em;}
.section-head p{margin-top:14px;color:var(--muted);font-size:16.5px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.14em;
  color:var(--copper);
  text-transform:none;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";width:22px;height:2px;background:var(--copper);border-radius:2px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;
  border-radius:var(--radius-sm);
  font-size:15.5px;
  font-weight:700;
  border:1px solid transparent;
  transition:transform .16s ease,background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
  line-height:1.2;
}
.btn:hover{transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--lime);color:var(--ink);border-color:var(--lime);}
.btn-primary:hover{background:var(--ink);color:var(--lime);border-color:var(--ink);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:rgba(200,242,75,.35);border-color:var(--ink);color:var(--ink);}
.btn-on-dark{background:var(--lime);color:var(--ink);border-color:var(--lime);}
.btn-on-dark:hover{background:#F7F5EE;color:var(--ink);border-color:#F7F5EE;}
.btn-outline-light{background:transparent;color:#F4F0E8;border-color:rgba(244,240,232,.42);}
.btn-outline-light:hover{background:rgba(244,240,232,.12);border-color:#F4F0E8;color:#fff;}
.btn-sm{padding:11px 18px;font-size:14px;border-radius:10px;}
.btn-group{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:64px 0 68px;
  background:
    repeating-linear-gradient(90deg,rgba(14,42,35,.05) 0 1px,transparent 1px 64px) top left/100% 14px no-repeat,
    var(--sand);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-90px;
  width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(200,242,75,.28),transparent 68%);
  pointer-events:none;
}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
  position:relative;z-index:1;
}
.crumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
  margin-bottom:18px;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--ink);text-decoration:underline;text-decoration-color:var(--lime);text-decoration-thickness:2px;text-underline-offset:3px;}
.crumb span{opacity:.6;}
.badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;
  border-radius:999px;
  font-size:12.5px;font-weight:700;
  background:rgba(201,107,59,.14);
  color:#9c4f27;
  letter-spacing:.02em;
}
.hero h1{
  font-size:clamp(36px,4.2vw,56px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.14;
  margin:16px 0 20px;
}
.hero-lead{
  font-size:19px;
  font-weight:600;
  color:var(--deep);
  max-width:640px;
  margin-bottom:14px;
}
.hero-text{
  font-size:16.5px;
  color:var(--muted);
  max-width:660px;
  margin-bottom:28px;
}
.hero-media{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  aspect-ratio:4/3;
  border:1px solid rgba(14,42,35,.14);
  box-shadow:var(--shadow);
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,42,35,.12) 0%,rgba(14,42,35,.62) 100%);
}
.spec-card{
  position:absolute;left:16px;right:16px;bottom:16px;
  background:rgba(255,253,247,.96);
  border:1px solid rgba(14,42,35,.1);
  border-radius:14px;
  padding:14px 16px;
  z-index:2;
}
.spec-card dl{display:flex;flex-direction:column;gap:6px;margin:0;}
.spec-card .row{
  display:flex;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}
.spec-card .row b{
  color:var(--ink);font-family:var(--font-num);font-weight:700;font-size:13.5px;
  text-align:right;
}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
}
.stat{background:var(--paper);padding:26px 24px;}
.stat b{
  display:block;
  font-family:var(--font-num);
  font-size:30px;
  font-weight:800;
  color:var(--ink);
  line-height:1.1;
  margin-bottom:6px;
}
.stat span{font-size:13.5px;color:var(--muted);}

/* ---------- 交错图文 ---------- */
.feature-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  padding:44px 0;
}
.feature-row + .feature-row{border-top:1px solid var(--line);}
.feature-row.reverse .feature-media{order:-1;}
.feature-copy h2{font-size:27px;margin-bottom:14px;letter-spacing:-.01em;}
.feature-copy h2 .num{
  font-family:var(--font-num);
  font-size:14px;
  color:var(--copper);
  display:block;
  letter-spacing:.16em;
  margin-bottom:8px;
  font-weight:700;
}
.feature-copy p{color:var(--muted);font-size:16px;max-width:560px;}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;
  color:var(--deep);
  background:rgba(14,42,35,.05);
  border:1px solid var(--line);
  border-radius:999px;
  padding:6px 13px;
}
.chip i{color:var(--copper);font-size:11px;}
.feature-media{
  border-radius:16px;
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/11;
  background:var(--paper);
  box-shadow:var(--shadow-soft);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feature-media img{width:100%;height:100%;object-fit:cover;}
.feature-media:hover{transform:translateY(-2px);border-color:var(--lime);box-shadow:var(--shadow);}

/* ---------- 上手路径 ---------- */
.path-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  counter-reset:step;
}
.path-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px;
  position:relative;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.path-card:hover{transform:translateY(-2px);border-color:var(--copper);box-shadow:var(--shadow);}
.path-num{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--lime);
  color:var(--ink);
  font-family:var(--font-num);
  font-weight:800;
  font-size:16px;
  margin-bottom:16px;
}
.path-card h3{font-size:19px;margin-bottom:8px;}
.path-card p{font-size:14.5px;color:var(--muted);margin:0;}

/* ---------- 运行环境 ---------- */
.env-wrap{
  display:grid;
  grid-template-columns:1.5fr 1fr;
  gap:36px;
  align-items:start;
}
.spec-list{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
}
.spec-list .item{
  display:grid;
  grid-template-columns:170px 1fr;
  gap:18px;
  padding:18px 24px;
  border-bottom:1px solid var(--line);
  font-size:15px;
}
.spec-list .item:last-child{border-bottom:0;}
.spec-list dt{color:var(--muted);font-weight:600;}
.spec-list dd{margin:0;color:var(--text);}
.env-side{
  background:var(--deep);
  color:rgba(244,240,232,.82);
  border-radius:var(--radius);
  padding:30px 26px;
}
.env-side h3{color:#F7F5EE;font-size:20px;margin-bottom:12px;}
.env-side p{font-size:14.5px;line-height:1.8;margin-bottom:20px;color:rgba(244,240,232,.72);}
.env-side .btn{width:100%;justify-content:center;}
.env-side .hint{
  display:block;margin-top:14px;font-size:12.5px;
  color:rgba(244,240,232,.5);text-align:center;
}

/* ---------- FAQ ---------- */
.faq-list{
  border-top:1px solid var(--line);
  max-width:860px;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:22px 40px 22px 20px;
  font-size:18px;
  font-weight:700;
  color:var(--ink);
  position:relative;
  box-shadow:inset 3px 0 0 transparent;
  transition:box-shadow .2s ease,color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-family:var(--font-num);
  font-size:22px;font-weight:400;
  color:var(--copper);
  transition:transform .2s ease;
}
.faq-item[open] summary{box-shadow:inset 3px 0 0 var(--lime);}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);}
.faq-item summary:hover{color:var(--deep);}
.faq-body{
  padding:0 40px 24px 20px;
  font-size:16px;
  line-height:1.85;
  color:var(--muted);
}
.faq-body p{margin:0;}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--ink);
  border-radius:var(--radius-lg);
  padding:52px 48px;
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:36px;
  align-items:center;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-90px;
  width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(200,242,75,.22),transparent 70%);
}
.cta-band h2{color:#F7F5EE;font-size:30px;margin-bottom:12px;position:relative;z-index:1;}
.cta-band p{color:rgba(244,240,232,.74);font-size:15.5px;margin:0;position:relative;z-index:1;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;position:relative;z-index:1;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(244,240,232,.78);
  margin-top:auto;
  padding:60px 0 26px;
}
.footer-inner{max-width:1240px;margin:0 auto;padding:0 48px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1fr;
  gap:36px;
}
.footer-brand{
  display:flex;align-items:center;gap:11px;
  color:#F7F5EE;font-size:17px;font-weight:700;
  margin-bottom:14px;
}
.footer-about{font-size:14px;line-height:1.8;color:rgba(244,240,232,.62);max-width:340px;margin:0;}
.footer-col h4{font-size:15px;color:#F7F5EE;margin-bottom:14px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(244,240,232,.7);}
.footer-col a:hover{color:var(--lime);text-decoration:underline;text-decoration-color:var(--lime);text-underline-offset:4px;}
.footer-dl{
  display:inline-block;
  background:var(--lime);color:var(--ink)!important;
  padding:9px 16px;border-radius:10px;font-weight:700;
}
.footer-dl:hover{background:#F7F5EE;color:var(--ink)!important;text-decoration:none;}
.footer-bottom{
  margin-top:42px;padding-top:22px;
  border-top:1px solid rgba(244,240,232,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(244,240,232,.55);
}

/* ---------- Foundation 覆盖 ---------- */
a{color:var(--ink);}
button,.button{border-radius:var(--radius-sm);}
.grid-container,.grid-x,.cell{margin:0;padding:0;}
body,html{font-family:var(--font-cn);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sidebar-w:216px;}
  .container{padding:0 32px;}
  .footer-inner{padding:0 32px;}
  .hero-grid{gap:36px;}
  .feature-row{gap:40px;}
  .cta-band{padding:44px 36px;}
}
@media (max-width:900px){
  .sidebar{
    transform:translateX(-100%);
    width:280px;
    box-shadow:0 0 40px rgba(0,0,0,.28);
  }
  .sidebar.is-open{transform:translateX(0);}
  .topbar{display:flex;}
  .main{margin-left:0;}
  .container{padding:0 24px;}
  .footer-inner{padding:0 24px;}
  .hero{padding:40px 0 48px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero h1{font-size:clamp(32px,6vw,42px);}
  .hero-lead{font-size:17.5px;}
  .section{padding:52px 0;}
  .section--tight{padding:44px 0;}
  .section-head h2{font-size:27px;}
  .feature-row{grid-template-columns:1fr;gap:24px;padding:36px 0;}
  .feature-row.reverse .feature-media{order:0;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .env-wrap{grid-template-columns:1fr;}
  .path-grid{grid-template-columns:1fr;gap:14px;}
  .cta-band{grid-template-columns:1fr;padding:38px 28px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-about{max-width:none;}
}
@media (max-width:640px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .footer-inner{padding:0 18px;}
  .hero h1{font-size:32px;}
  .hero-text{font-size:15.5px;}
  .btn{width:100%;}
  .btn-group{flex-direction:column;}
  .btn-sm{width:auto;}
  .stat{padding:20px 18px;}
  .stat b{font-size:25px;}
  .feature-copy h2{font-size:23px;}
  .spec-list .item{grid-template-columns:1fr;gap:4px;padding:16px 18px;}
  .faq-item summary{font-size:16.5px;padding:18px 34px 18px 16px;}
  .faq-body{padding:0 24px 20px 16px;font-size:15.5px;}
  .cta-band h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .spec-card{left:10px;right:10px;bottom:10px;padding:12px 13px;}
}
@media (max-width:400px){
  .container{padding:0 16px;}
  .footer-inner{padding:0 16px;}
  .hero{background:var(--sand);}
  .hero::after{display:none;}
}

/* roulang page: category2 */
:root{
  --ink:#0E2A23;
  --ink-soft:#16372E;
  --lime:#C8F24B;
  --copper:#C96B3B;
  --sand:#F4F0E8;
  --paper:#FFFDF7;
  --text:#101C18;
  --muted:#66736C;
  --line:#D8D5CA;
  --err:#B4453A;
  --ok:#2F7A55;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow:0 12px 32px rgba(14,42,35,.08);
  --shadow-soft:0 6px 18px rgba(14,42,35,.06);
  --side-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:24px}
body{
  margin:0;
  padding-left:var(--side-w);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--ink);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--copper)}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--ink);margin:0;letter-spacing:-.01em}
h1{font-size:clamp(32px,3.6vw,52px);font-weight:800;line-height:1.16;letter-spacing:-.02em}
h2{font-size:clamp(25px,2.6vw,34px);font-weight:700;line-height:1.28}
h3{font-size:20px;font-weight:700;line-height:1.4}
p{margin:0 0 14px}
ul,ol{margin:0;padding:0}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 48px}
.num{font-family:"Bahnschrift","DIN Alternate","Noto Sans SC",sans-serif;font-variant-numeric:tabular-nums}

/* ============ 左侧竖向导航 ============ */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:var(--ink);
  color:#E7EBE3;
  display:flex;flex-direction:column;
  padding:26px 18px 20px;
  z-index:60;
  border-right:1px solid rgba(255,255,255,.06);
}
.brand{
  display:flex;align-items:center;gap:11px;
  padding:0 6px 20px;
  border-bottom:1px solid rgba(255,255,255,.10);
  margin-bottom:18px;
}
.brand-mark{
  flex:none;width:36px;height:36px;border-radius:10px;
  background:var(--lime);color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-family:"Bahnschrift","DIN Alternate",sans-serif;
  font-size:12.5px;font-weight:800;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.24;min-width:0}
.brand-text b{font-size:15.5px;font-weight:700;color:#FFFFFF;white-space:nowrap}
.brand-text small{font-size:11.5px;color:rgba(231,235,227,.55);letter-spacing:.04em}
.nav-scroll{flex:1 1 auto;overflow-y:auto;overscroll-behavior:contain}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-link{
  position:relative;
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;
  border-radius:10px;
  font-size:15.5px;font-weight:500;
  color:rgba(231,235,227,.78);
  transition:background .18s ease,color .18s ease;
}
.nav-link:hover{background:rgba(200,242,75,.12);color:#FFFFFF}
.nav-link:focus-visible{outline:3px solid rgba(200,242,75,.55);outline-offset:2px}
.nav-link.is-active{background:rgba(200,242,75,.14);color:#FFFFFF;font-weight:700}
.nav-link.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--lime);
}
.nav-dot{
  flex:none;width:6px;height:6px;border-radius:50%;
  background:currentColor;opacity:.45;
}
.nav-link.is-active .nav-dot{background:var(--lime);opacity:1}
.side-foot{
  margin-top:18px;padding-top:18px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-direction:column;gap:12px;
}
.side-hint{
  display:flex;align-items:center;gap:8px;
  font-size:12.5px;color:rgba(231,235,227,.55);
}
.side-hint span.dot{width:7px;height:7px;border-radius:50%;background:var(--lime);flex:none}

/* ============ 移动端顶栏 + 抽屉 ============ */
.mobile-bar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:64px;
  align-items:center;justify-content:space-between;
  padding:0 16px;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  z-index:70;
}
.mobile-brand{display:flex;align-items:center;gap:10px;min-width:0}
.mobile-brand .brand-mark{width:32px;height:32px;border-radius:9px;font-size:11.5px}
.mobile-brand b{font-size:15px;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.menu-btn{
  flex:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--paper);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;padding:0;
}
.menu-btn span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.menu-btn span::before,.menu-btn span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.menu-btn span::before{top:-6px}
.menu-btn span::after{top:6px}
.menu-btn:focus-visible{outline:3px solid rgba(200,242,75,.55);outline-offset:2px}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:290px;max-width:86vw;
  background:var(--paper);z-index:90;
  transform:translateX(-104%);
  transition:transform .28s ease;
  display:flex;flex-direction:column;
  padding:18px 16px 22px;overflow-y:auto;
  box-shadow:0 0 40px rgba(0,0,0,.2);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.drawer-head .brand{padding:0;border:0;margin:0}
.drawer-head .brand-text b{color:var(--ink)}
.drawer-head .brand-text small{color:var(--muted)}
.drawer-close{
  flex:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--paper);color:var(--ink);
  font-size:20px;line-height:1;cursor:pointer;
}
.drawer .nav-link{color:var(--ink);font-weight:500;min-height:48px}
.drawer .nav-link:hover{background:rgba(200,242,75,.22);color:var(--ink)}
.drawer .nav-link.is-active{background:rgba(200,242,75,.30);color:var(--ink);font-weight:700}
.drawer .nav-link.is-active .nav-dot{background:var(--copper);opacity:1}
.drawer .nav-link.is-active::before{background:var(--copper)}
.drawer-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,42,35,.6);
  z-index:80;opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ============ 按钮 / 标签 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 24px;border-radius:var(--radius-sm);
  font-size:15.5px;font-weight:700;line-height:1.1;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn:focus-visible{outline:3px solid rgba(200,242,75,.55);outline-offset:2px}
.btn-primary{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.btn-primary:hover{background:var(--ink);color:var(--lime);border-color:var(--ink);transform:translateY(-1px);box-shadow:0 10px 22px rgba(14,42,35,.18)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:rgba(200,242,75,.28);color:var(--ink);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-outline-light{background:transparent;color:#E9EFE6;border-color:rgba(233,239,230,.42)}
.btn-outline-light:hover{background:rgba(200,242,75,.16);color:#FFFFFF;border-color:rgba(200,242,75,.7);transform:translateY(-1px)}
.btn-sm{padding:11px 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.tag{
  display:inline-block;padding:5px 12px;border-radius:999px;
  background:rgba(200,242,75,.30);color:var(--ink);
  font-size:13px;font-weight:600;border:1px solid rgba(14,42,35,.08);
  white-space:nowrap;
}
.tag-copper{background:rgba(201,107,59,.13);color:#8E4526;border-color:rgba(201,107,59,.26)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--copper);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--copper);display:inline-block}
.eyebrow-light{color:var(--lime)}
.eyebrow-light::before{background:var(--lime)}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--muted);padding:26px 0 0;
}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--ink);text-decoration:underline;text-decoration-color:var(--lime);text-decoration-thickness:2px}
.crumb span.sep{color:#B9B5A8}
.crumb span[aria-current]{color:var(--ink);font-weight:600}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:18px 0 68px;
  background:radial-gradient(1100px 420px at 88% -14%,rgba(200,242,75,.22),transparent 68%);
}
.hero::before{
  content:"";position:absolute;right:-30px;top:60px;width:230px;height:230px;
  background-image:radial-gradient(rgba(14,42,35,.16) 1px,transparent 1px);
  background-size:14px 14px;opacity:.55;pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.05fr .95fr;
  gap:52px;align-items:center;
  padding-top:26px;
}
.hero-copy h1{margin-bottom:18px}
.hero-lead{
  font-size:calc(1em + 1.2px);
  color:var(--muted);max-width:560px;line-height:1.8;margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:10px 22px;
  list-style:none;padding:0;margin:0;
}
.hero-facts li{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--muted);
}
.hero-facts li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--copper);flex:none;
}
.hero-media{position:relative;margin:0}
.hero-media img{
  width:100%;aspect-ratio:16/12;object-fit:cover;
  border-radius:var(--radius-lg);border:1px solid var(--line);
}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-lg);
  background:linear-gradient(180deg,rgba(14,42,35,.04) 0%,rgba(14,42,35,.38) 100%);
  pointer-events:none;
}
.hero-mini{
  position:absolute;left:18px;right:18px;bottom:18px;z-index:2;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:14px 16px;
  display:grid;grid-template-columns:repeat(3,1fr);gap:12px;
  box-shadow:var(--shadow-soft);
}
.hero-mini span{display:block;font-size:12px;color:var(--muted);margin-bottom:2px}
.hero-mini b{font-family:"Bahnschrift","DIN Alternate",sans-serif;font-size:15px;color:var(--ink);font-weight:700}

/* ============ 通用板块 ============ */
.section{padding:72px 0}
.section-tight{padding:56px 0}
.section-paper{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:780px;margin-bottom:36px}
.sec-head h2{margin-bottom:12px}
.sec-head p{color:var(--muted);font-size:16px;margin:0}

/* ============ 系统要求 ============ */
.req-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:40px;align-items:start}
.req-list{display:grid;gap:12px}
.req-item{
  display:grid;grid-template-columns:190px 1fr;gap:20px;
  margin:0;padding:18px 22px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-md);
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.req-item:hover{border-color:var(--lime);box-shadow:var(--shadow-soft);transform:translateY(-2px)}
.req-item dt{font-weight:700;font-size:15.5px;color:var(--ink)}
.req-item dd{margin:0;font-size:15px;color:var(--muted);line-height:1.7}
.req-side{
  background:var(--ink-soft);color:#E9EFE6;
  border-radius:var(--radius-lg);padding:28px 26px;
  box-shadow:var(--shadow);
}
.req-side h3{color:#FFFFFF;font-size:18px;margin-bottom:16px}
.checklist{list-style:none;padding:0;margin:0 0 20px;display:grid;gap:11px}
.checklist li{
  position:relative;padding-left:26px;
  font-size:14.5px;line-height:1.7;color:rgba(233,239,230,.82);
}
.checklist li::before{
  content:"";position:absolute;left:2px;top:7px;
  width:12px;height:7px;
  border-left:2px solid var(--lime);border-bottom:2px solid var(--lime);
  transform:rotate(-45deg);
}
.req-side .btn{width:100%}
.req-side-note{font-size:12.5px;color:rgba(233,239,230,.55);margin:12px 0 0}

/* ============ 四步安装时间线 ============ */
.steps-grid{display:grid;grid-template-columns:1.32fr .78fr;gap:48px;align-items:start}
.timeline{list-style:none;padding:0;margin:0;position:relative}
.timeline::before{
  content:"";position:absolute;left:19px;top:14px;bottom:16px;width:2px;
  background:linear-gradient(180deg,var(--lime) 0%,rgba(200,242,75,.12) 100%);
}
.step{position:relative;padding:0 0 34px 64px}
.step:last-child{padding-bottom:0}
.step-no{
  position:absolute;left:0;top:0;
  width:40px;height:40px;border-radius:50%;
  background:var(--lime);color:var(--ink);
  border:3px solid var(--sand);
  display:flex;align-items:center;justify-content:center;
  font-family:"Bahnschrift","DIN Alternate",sans-serif;
  font-size:16px;font-weight:800;
}
.step h3{margin-bottom:8px}
.step p{color:var(--muted);font-size:15.5px;line-height:1.8;max-width:620px;margin-bottom:12px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.side-media{
  position:sticky;top:32px;
  background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:16px;
  box-shadow:var(--shadow);
}
.side-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-md)}
.side-media h3{font-size:17px;margin:16px 4px 8px}
.side-media p{font-size:14px;color:var(--muted);margin:0 4px 4px;line-height:1.75}

/* ============ 下载区 ============ */
.dl-panel{
  display:grid;grid-template-columns:1fr 200px;gap:40px;align-items:center;
  background:var(--ink);color:#E9EFE6;
  border-radius:22px;padding:48px;
  box-shadow:0 24px 56px rgba(14,42,35,.20);
}
.dl-panel h2{color:#FFFFFF;margin-bottom:14px}
.dl-panel p{color:rgba(233,239,230,.78);font-size:15.5px;max-width:620px}
.dl-btns{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 18px}
.dl-note{font-size:13.5px;color:rgba(233,239,230,.58);margin:0;line-height:1.75}
.dl-side{text-align:center;display:flex;flex-direction:column;align-items:center;gap:12px}
.qr-box{
  width:112px;height:112px;background:#FFFFFF;border-radius:14px;
  padding:10px;display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);gap:4px;
}
.qr-box i{display:block;background:var(--ink);border-radius:2px}
.qr-box i:nth-child(3n){opacity:.35}
.qr-box i:nth-child(5n+1){opacity:.7}
.dl-side p{font-size:13px;color:rgba(233,239,230,.66);margin:0}

/* ============ FAQ ============ */
.faq{max-width:880px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:22px 44px 22px 20px;
  font-size:18px;font-weight:700;color:var(--ink);line-height:1.55;
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:26px;
  width:3px;height:20px;border-radius:2px;background:var(--line);
  transition:background .2s ease;
}
.faq-item summary::after{
  content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:24px;font-weight:400;color:var(--copper);line-height:1;
  transition:transform .2s ease,color .2s ease;
}
.faq-item[open] summary::before{background:var(--lime)}
.faq-item[open] summary::after{content:"−";color:var(--ink)}
.faq-item summary:hover{color:var(--ink-soft)}
.faq-item summary:focus-visible{outline:3px solid rgba(200,242,75,.55);outline-offset:2px;border-radius:6px}
.faq-answer{padding:0 44px 24px 20px}
.faq-answer p{color:var(--muted);font-size:16px;line-height:1.85;margin:0}
.faq-answer p+p{margin-top:10px}

/* ============ 底部提示条 ============ */
.helper{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px 28px;margin-top:36px;
}
.helper p{margin:0;font-size:15px;color:var(--muted)}
.helper p b{color:var(--ink)}
.helper-links{display:flex;flex-wrap:wrap;gap:10px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#E7EBE3;padding:64px 0 28px;margin-top:88px}
.footer-inner{max-width:1240px;margin:0 auto;padding:0 48px}
.footer-grid{display:grid;grid-template-columns:1.55fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:11px;font-size:16.5px;color:#FFFFFF;margin-bottom:16px}
.footer-brand b{font-weight:700}
.footer-about{font-size:14.5px;line-height:1.85;color:rgba(231,235,227,.66);max-width:320px;margin:0}
.footer-col h4{font-size:15px;color:#FFFFFF;margin-bottom:16px;font-weight:700}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.footer-col a{font-size:14.5px;color:rgba(231,235,227,.72)}
.footer-col a:hover{color:var(--lime)}
.footer-col a:focus-visible{outline:3px solid rgba(200,242,75,.55);outline-offset:3px;border-radius:4px}
.footer-dl{color:var(--lime)!important;font-weight:700}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(231,235,227,.54);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--side-w:216px}
  .container{padding:0 32px}
  .footer-inner{padding:0 32px}
  .hero-grid{gap:36px}
  .req-grid,.steps-grid{gap:28px}
  .dl-panel{padding:38px;grid-template-columns:1fr 170px}
  .footer-grid{gap:28px}
}
@media (max-width:1024px){
  .hero-mini{grid-template-columns:1fr 1fr}
  .hero-mini > div:last-child{display:none}
  .req-item{grid-template-columns:1fr;gap:6px}
}
@media (max-width:900px){
  body{padding-left:0;padding-top:64px}
  .side-nav{display:none}
  .mobile-bar{display:flex}
  .crumb{padding-top:20px}
  .hero{padding:8px 0 52px}
  .hero-grid{grid-template-columns:1fr;gap:32px;padding-top:20px}
  .hero-media img{aspect-ratio:16/10}
  .hero-mini{position:static;margin-top:14px;left:auto;right:auto;bottom:auto}
  .hero-media::after{border-radius:var(--radius-lg)}
  .req-grid,.steps-grid{grid-template-columns:1fr;gap:28px}
  .side-media{position:static}
  .section{padding:56px 0}
  .dl-panel{grid-template-columns:1fr;padding:32px;gap:28px}
  .dl-side{flex-direction:row;justify-content:flex-start;text-align:left;gap:16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-inner{padding:0 24px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  h1{font-size:clamp(28px,7.4vw,34px)}
  h2{font-size:24px}
  .hero-actions .btn{width:100%}
  .hero-facts{gap:8px 18px}
  .hero-mini{grid-template-columns:1fr 1fr;padding:12px 14px}
  .step{padding-left:56px;padding-bottom:28px}
  .step-no{width:36px;height:36px;font-size:14px;border-width:3px}
  .timeline::before{left:17px}
  .faq-item summary{font-size:16.5px;padding:18px 38px 18px 16px}
  .faq-item summary::before{top:22px;height:18px}
  .faq-answer{padding:0 16px 20px 16px}
  .helper{padding:20px;flex-direction:column;align-items:flex-start}
  .helper-links{width:100%}
  .helper-links .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:6px}
  .section{padding:48px 0}
  .dl-btns .btn{width:100%}
}
@media (max-width:400px){
  .container{padding:0 16px}
  .footer-inner{padding:0 16px}
  .hero::before{display:none}
  .brand-text b{font-size:14.5px}
}
@media (min-width:901px){
  .drawer,.drawer-mask{display:none}
}

/* roulang page: category3 */
:root{
  --ink:#0E2A23;
  --ink-2:#16372E;
  --lime:#C8F24B;
  --copper:#C96B3B;
  --sand:#F4F0E8;
  --paper:#FFFDF7;
  --text:#101C18;
  --muted:#66736C;
  --line:#D8D5CA;
  --err:#B4453A;
  --ok:#2F7A55;
  --r-card:18px;
  --r-img:16px;
  --r-btn:12px;
  --r-in:10px;
  --shadow:0 12px 32px rgba(14,42,35,.08);
  --shadow-2:0 18px 44px rgba(14,42,35,.14);
  --nav-w:248px;
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --num:"Bahnschrift","DIN Alternate","Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  background:var(--sand);
  color:var(--text);
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,dl,dd,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;}
table{border-collapse:collapse;}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--lime);color:var(--ink);padding:10px 18px;border-radius:0 0 10px 0;font-weight:700;
}
.skip-link:focus{left:0;}

/* ---------- 左侧竖向导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--ink);
  display:flex;flex-direction:column;
  padding:24px 16px 20px;
  z-index:60;
  overflow-y:auto;
}
.brand-lock{
  display:flex;align-items:center;gap:11px;
  padding:0 8px 20px;margin-bottom:18px;
  border-bottom:1px solid rgba(255,253,247,.13);
}
.brand-mark{
  flex:none;width:36px;height:36px;border-radius:10px;
  background:var(--lime);color:var(--ink);
  display:grid;place-items:center;
  font-family:var(--num);font-weight:800;font-size:13px;letter-spacing:.02em;
}
.brand-text b{
  display:block;color:var(--paper);font-size:15px;line-height:1.35;font-weight:800;letter-spacing:-.01em;
}
.brand-text span{
  display:block;color:rgba(255,253,247,.55);font-size:12px;margin-top:3px;letter-spacing:.01em;
}
.nav-list{
  display:flex;flex-direction:column;gap:4px;
  padding:0 4px;flex:1 1 auto;
}
.nav-link{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:11px 14px;border-radius:10px;
  color:rgba(255,253,247,.76);font-size:15px;font-weight:500;
  transition:background .18s ease,color .18s ease;
}
.nav-dot{
  flex:none;width:6px;height:6px;border-radius:50%;
  background:currentColor;opacity:.5;transition:opacity .18s ease,transform .18s ease;
}
.nav-link:hover{background:rgba(200,242,75,.12);color:var(--paper);}
.nav-link:hover .nav-dot{opacity:.9;}
.nav-link:focus-visible{outline:3px solid rgba(200,242,75,.55);outline-offset:2px;}
.nav-link.is-active{
  background:rgba(200,242,75,.16);color:#F4FFD9;font-weight:700;
}
.nav-link.is-active .nav-dot{opacity:1;transform:scale(1.25);}
.nav-link.is-active::before{
  content:"";position:absolute;left:-4px;top:9px;bottom:9px;width:3px;
  border-radius:3px;background:var(--lime);
}
.nav-foot{
  margin-top:22px;padding:16px 8px 0;
  border-top:1px solid rgba(255,253,247,.13);
}
.nav-foot .btn{width:100%;height:42px;font-size:14px;padding:0 12px;}
.nav-hint{
  margin-top:10px;font-size:12px;color:rgba(255,253,247,.5);line-height:1.6;
}
.nav-close{
  display:none;position:absolute;top:12px;right:12px;
  width:44px;height:44px;border-radius:12px;border:0;
  background:rgba(255,253,247,.1);color:var(--paper);font-size:22px;line-height:1;cursor:pointer;
}

/* ---------- 移动顶部栏 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
  background:var(--ink);color:var(--paper);
  align-items:center;justify-content:space-between;gap:12px;
  padding:0 16px;box-shadow:0 6px 18px rgba(14,42,35,.18);
}
.topbar .brand-lock{padding:0;margin:0;border:0;border-bottom:0;}
.topbar .brand-text b{font-size:14px;}
.topbar .brand-text span{display:none;}
.menu-toggle{
  width:44px;height:44px;flex:none;border:0;border-radius:12px;
  background:rgba(200,242,75,.16);color:var(--lime);font-size:18px;cursor:pointer;
}
.menu-toggle:focus-visible{outline:3px solid rgba(200,242,75,.55);outline-offset:2px;}
.nav-scrim{
  display:none;position:fixed;inset:0;z-index:55;background:rgba(14,42,35,.6);
}
.nav-scrim.is-on{display:block;}

/* ---------- 主内容 ---------- */
.app-main{margin-left:var(--nav-w);}
.wrap{max-width:1240px;margin:0 auto;padding:0 48px;}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:16px;font-weight:700;border:1px solid transparent;
  cursor:pointer;transition:background .18s ease,color .18s ease,transform .18s ease,border-color .18s ease;
}
.btn i{font-size:15px;}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{background:var(--ink);color:var(--lime);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:rgba(200,242,75,.35);transform:translateY(-1px);}
.btn-light{background:var(--paper);color:var(--ink);}
.btn-light:hover{background:var(--lime);color:var(--ink);transform:translateY(-1px);}
.btn:focus-visible{outline:3px solid rgba(200,242,75,.55);outline-offset:2px;}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:rgba(200,242,75,.28);color:var(--ink);
  font-size:13px;font-weight:700;line-height:1.6;
}
.tag-copper{background:rgba(201,107,59,.15);color:#8A4423;}
.tag-plain{background:rgba(14,42,35,.06);color:var(--muted);font-weight:600;}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--num);font-size:12.5px;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:var(--copper);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--copper);border-radius:2px;}

.section{padding:64px 0;border-top:1px solid var(--line);}
.section:first-of-type{border-top:0;}
.section-head{max-width:800px;margin-bottom:34px;}
.section-head h2{
  font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.28;
  letter-spacing:-.01em;color:var(--ink);margin-top:12px;
}
.section-head p{margin-top:14px;color:var(--muted);font-size:16.5px;line-height:1.85;max-width:780px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:56px 0 52px;
  background:var(--sand);
}
.hero::after{
  content:"";position:absolute;right:-40px;bottom:-10px;width:320px;height:150px;
  background-image:repeating-linear-gradient(90deg,rgba(14,42,35,.16) 0 1px,transparent 1px 18px);
  opacity:.55;pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center;
}
.hero h1{
  font-size:clamp(30px,3.6vw,48px);
  font-weight:800;line-height:1.14;letter-spacing:-.02em;
  color:var(--ink);margin-top:16px;
}
.hero h1 em{font-style:normal;color:var(--copper);}
.hero-sub{
  margin-top:18px;font-size:17.5px;line-height:1.8;color:var(--muted);max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;}

.hero-media{position:relative;}
.hero-media .shot{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
  aspect-ratio:4/3;background:var(--ink-2);
}
.hero-media .shot img{width:100%;height:100%;object-fit:cover;}
.hero-media .shot::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,42,35,.18),rgba(14,42,35,.5));
}
.hero-media .shot-cap{
  position:absolute;left:16px;right:16px;bottom:16px;z-index:2;
  color:var(--paper);font-size:13.5px;line-height:1.6;
}
.hero-media .shot-cap b{display:block;font-size:15px;margin-bottom:2px;}
.hero-meta{
  display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:12px;
}
.hero-meta div{
  background:var(--paper);border:1px solid var(--line);border-radius:12px;
  padding:10px 12px;
}
.hero-meta span{display:block;font-size:11.5px;color:var(--muted);letter-spacing:.04em;}
.hero-meta b{display:block;font-family:var(--num);font-size:15px;color:var(--ink);margin-top:2px;}

/* ---------- 双栏：流程 + 侧栏 ---------- */
.split{display:grid;grid-template-columns:1.32fr .82fr;gap:36px;align-items:start;}

.steps{position:relative;}
.step{position:relative;padding-left:66px;padding-bottom:30px;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:21px;top:46px;bottom:6px;width:2px;
  background:var(--line);
}
.step:last-child::before{display:none;}
.step-num{
  position:absolute;left:0;top:0;width:44px;height:44px;border-radius:50%;
  background:var(--lime);color:var(--ink);
  display:grid;place-items:center;
  font-family:var(--num);font-weight:800;font-size:16px;
  box-shadow:0 6px 16px rgba(200,242,75,.34);
}
.step h3{font-size:19px;font-weight:700;color:var(--ink);line-height:1.4;padding-top:8px;}
.step p{margin-top:8px;color:var(--muted);font-size:15.8px;line-height:1.85;max-width:620px;}
.step .tag{margin-top:12px;}

.side-stack{display:flex;flex-direction:column;gap:20px;}
.panel{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow);
}
.panel h3{font-size:19px;font-weight:700;color:var(--ink);line-height:1.4;}
.panel .panel-sub{margin-top:8px;font-size:14.5px;color:var(--muted);line-height:1.75;}

.safe-card{
  background:var(--ink);border-radius:var(--r-card);padding:26px 24px;
  color:rgba(255,253,247,.86);box-shadow:var(--shadow-2);
}
.safe-card h3{color:var(--paper);font-size:19px;font-weight:700;display:flex;align-items:center;gap:10px;}
.safe-card h3 i{color:var(--lime);font-size:16px;}
.safe-card ul{margin-top:16px;display:flex;flex-direction:column;gap:12px;}
.safe-card li{
  position:relative;padding-left:20px;font-size:14.8px;line-height:1.75;
}
.safe-card li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--lime);transform:rotate(45deg);
}

/* ---------- 表单 ---------- */
.form-card .field{margin-bottom:16px;}
.form-card label{
  display:block;font-size:14px;font-weight:700;color:var(--ink);margin-bottom:7px;
}
.form-card .hint{display:block;font-size:12.5px;color:var(--muted);margin-top:6px;font-weight:400;}
.form-card input[type="text"],
.form-card input[type="tel"],
.form-card select,
.form-card textarea{
  width:100%;height:48px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-in);
  background:var(--paper);color:var(--text);font-size:15.5px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-card textarea{height:104px;padding:12px 14px;line-height:1.7;resize:vertical;}
.form-card input:focus,
.form-card select:focus,
.form-card textarea:focus{
  outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(200,242,75,.55);
}
.form-card input.is-error{border-color:var(--err);box-shadow:0 0 0 3px rgba(180,69,58,.18);}
.form-note{margin-top:12px;font-size:12.5px;color:var(--muted);line-height:1.7;}
.form-ok{
  margin-top:14px;padding:11px 14px;border-radius:10px;
  background:rgba(47,122,85,.1);border:1px solid rgba(47,122,85,.32);
  color:var(--ok);font-size:13.5px;font-weight:600;
}

/* ---------- 提示对照列表 ---------- */
.issue-list{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow);
}
.issue{
  display:grid;grid-template-columns:280px 1fr;gap:24px;
  padding:22px 26px;border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.issue:last-child{border-bottom:0;}
.issue:hover{background:rgba(200,242,75,.1);}
.issue dt{display:flex;align-items:flex-start;gap:10px;font-weight:700;color:var(--ink);font-size:16px;line-height:1.6;}
.issue dt i{color:var(--copper);font-size:14px;margin-top:5px;}
.issue dd{color:var(--muted);font-size:15.5px;line-height:1.85;}

/* ---------- 账户保护 2x2 ---------- */
.tips{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:8px;}
.tip{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.tip:hover{transform:translateY(-2px);border-color:var(--lime);box-shadow:var(--shadow);}
.tip i{font-size:18px;color:var(--copper);}
.tip h3{margin-top:12px;font-size:18px;font-weight:700;color:var(--ink);}
.tip p{margin-top:8px;font-size:15.2px;color:var(--muted);line-height:1.8;}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  position:relative;cursor:pointer;list-style:none;
  padding:20px 46px 20px 18px;
  font-size:18px;font-weight:700;color:var(--ink);line-height:1.6;
  transition:color .18s ease,background .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:2px;
  background:var(--line);transition:background .18s ease;
}
.faq-item summary::after{
  content:"+";position:absolute;right:12px;top:50%;transform:translateY(-50%);
  font-family:var(--num);font-size:22px;font-weight:700;color:var(--muted);
}
.faq-item[open] summary::before{background:var(--lime);}
.faq-item[open] summary::after{content:"−";color:var(--copper);}
.faq-item summary:hover{background:rgba(200,242,75,.12);}
.faq-item summary:focus-visible{outline:3px solid rgba(200,242,75,.55);outline-offset:-3px;}
.faq-body{padding:0 46px 22px 18px;color:var(--muted);font-size:16px;line-height:1.85;max-width:820px;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);border-radius:22px;overflow:hidden;
  display:grid;grid-template-columns:1.25fr .75fr;align-items:center;
  box-shadow:var(--shadow-2);
}
.cta-copy{padding:44px 40px;}
.cta-copy h2{color:var(--paper);font-size:clamp(22px,2.4vw,30px);line-height:1.32;font-weight:700;}
.cta-copy p{margin-top:14px;color:rgba(255,253,247,.72);font-size:15.8px;line-height:1.85;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.cta-figure{position:relative;align-self:stretch;min-height:240px;}
.cta-figure img{width:100%;height:100%;object-fit:cover;}
.cta-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(14,42,35,.92),rgba(14,42,35,.18));
}

/* ---------- 相关入口 ---------- */
.links{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.link-card{
  display:block;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px;
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.link-card:hover{transform:translateY(-2px);border-color:var(--lime);box-shadow:var(--shadow);}
.link-card i{color:var(--copper);font-size:17px;}
.link-card b{display:block;margin-top:12px;font-size:16.5px;color:var(--ink);}
.link-card span{display:block;margin-top:6px;font-size:14px;color:var(--muted);line-height:1.7;}
.link-card .go{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;
  font-size:13.5px;font-weight:700;color:var(--ink);
}
.link-card:hover .go{color:var(--copper);}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-left:var(--nav-w);
  background:var(--ink);color:rgba(255,253,247,.78);
  padding:52px 0 26px;
}
.footer-inner{max-width:1240px;margin:0 auto;padding:0 48px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:11px;}
.footer-brand b{color:var(--paper);font-size:16px;font-weight:800;}
.footer-about{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,253,247,.62);max-width:340px;}
.footer-col h4{color:var(--paper);font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:14px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,253,247,.72);transition:color .18s ease;}
.footer-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px;}
.footer-dl{color:var(--lime) !important;font-weight:700;}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,253,247,.14);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:13px;color:rgba(255,253,247,.52);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--nav-w:216px;}
  .wrap,.footer-inner{padding:0 32px;}
  .hero-grid{gap:32px;}
  .split{grid-template-columns:1.2fr .85fr;gap:26px;}
  .issue{grid-template-columns:230px 1fr;gap:18px;}
  .links{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1000px){
  .split{grid-template-columns:1fr;}
  .hero-grid{grid-template-columns:1fr;gap:30px;}
  .hero-media{order:2;}
  .cta-band{grid-template-columns:1fr;}
  .cta-figure{min-height:180px;order:-1;}
  .cta-figure::after{background:linear-gradient(180deg,rgba(14,42,35,.75),rgba(14,42,35,.4));}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
  .side-nav{
    width:288px;transform:translateX(-102%);
    transition:transform .26s ease;z-index:80;padding-top:64px;
  }
  .side-nav.is-open{transform:translateX(0);}
  .nav-close{display:block;}
  .topbar{display:flex;}
  .app-main,.site-footer{margin-left:0;}
  .app-main{padding-top:64px;}
  .section{padding:48px 0;}
  .hero{padding:40px 0 44px;}
  .issue{grid-template-columns:1fr;gap:10px;}
  .tips{grid-template-columns:1fr;}
  .links{grid-template-columns:1fr 1fr;}
  .cta-copy{padding:32px 26px;}
}
@media (max-width:640px){
  body{font-size:16px;}
  .wrap,.footer-inner{padding:0 18px;}
  .hero h1{font-size:31px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .hero-meta{grid-template-columns:1fr 1fr;}
  .step{padding-left:58px;}
  .step-num{width:40px;height:40px;font-size:15px;}
  .step::before{left:19px;top:42px;}
  .panel,.safe-card,.tip{border-radius:16px;padding:20px;}
  .cta-copy{padding:28px 20px;}
  .cta-actions .btn{width:100%;}
  .links{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;}
  .faq-item summary{font-size:17px;padding-right:38px;}
  .faq-body{padding-right:20px;}
}
@media (max-width:400px){
  .wrap,.footer-inner{padding:0 16px;}
  .hero::after{display:none;}
  .hero-meta{grid-template-columns:1fr;}
  .tag{font-size:12px;padding:3px 10px;}
}

/* roulang page: category4 */
:root{
  --ink:#0E2A23;
  --ink-70:rgba(14,42,35,.72);
  --ink-80:rgba(14,42,35,.8);
  --lime:#C8F24B;
  --lime-soft:rgba(200,242,75,.14);
  --copper:#C96B3B;
  --copper-soft:rgba(201,107,59,.12);
  --sand:#F4F0E8;
  --paper:#FFFDF7;
  --deep:#16372E;
  --text:#101C18;
  --muted:#66736C;
  --line:#D8D5CA;
  --err:#B4453A;
  --ok:#2F7A55;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 12px 32px rgba(14,42,35,.08);
  --shadow-hover:0 18px 42px rgba(14,42,35,.14);
  --nav-w:248px;
  --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Bahnschrift","DIN Alternate",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0;}
ul,ol{list-style:none;margin:0;padding:0;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--ink);}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:3px solid rgba(200,242,75,.55);outline-offset:2px;border-radius:6px;}
::selection{background:var(--lime);color:var(--ink);}

/* ---------- 侧栏导航 ---------- */
.side-nav{
  position:fixed;inset:0 auto 0 0;
  width:var(--nav-w);
  background:var(--ink);
  color:#EAF3EC;
  display:flex;flex-direction:column;
  padding:26px 18px 22px;
  gap:22px;
  z-index:80;
  overflow-y:auto;
}
.brand-lock{display:flex;align-items:center;gap:12px;}
.brand-mark{
  flex:0 0 auto;
  width:38px;height:38px;border-radius:11px;
  background:var(--lime);color:var(--ink);
  font-family:var(--font-num);font-weight:700;font-size:14px;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:.02em;
}
.brand-text b{display:block;font-size:15.5px;line-height:1.35;color:#F6FAF2;font-weight:700;}
.brand-text span{display:block;font-size:11.5px;letter-spacing:.06em;color:rgba(234,243,236,.6);margin-top:3px;}
.nav-label{
  font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:rgba(234,243,236,.42);padding-left:6px;
}
.nav-list{display:flex;flex-direction:column;gap:4px;}
.nav-link{
  position:relative;
  display:flex;align-items:center;gap:10px;
  padding:11px 12px 11px 16px;
  border-radius:12px;
  font-size:15px;font-weight:500;
  color:rgba(234,243,236,.78);
}
.nav-link::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:2px;background:var(--lime);
  transition:height .2s ease;
}
.nav-link:hover{background:var(--lime-soft);color:#F6FAF2;}
.nav-link.is-active{background:var(--lime-soft);color:#F6FAF2;font-weight:700;}
.nav-link.is-active::before{height:20px;}
.nav-dot{
  width:6px;height:6px;border-radius:50%;
  background:rgba(234,243,236,.35);
  flex:0 0 auto;transition:background-color .2s ease;
}
.nav-link.is-active .nav-dot{background:var(--lime);}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;}
.side-note{
  font-size:12.5px;line-height:1.7;color:rgba(234,243,236,.55);
  border-top:1px solid rgba(234,243,236,.14);padding-top:14px;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border-radius:var(--radius-sm);
  font-weight:700;font-size:15px;line-height:1.2;
  border:1px solid transparent;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{background:var(--ink);color:var(--lime);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--lime-soft);border-color:var(--ink);}
.btn-on-dark{background:var(--lime);color:var(--ink);}
.btn-on-dark:hover{background:#F6FAF2;color:var(--ink);transform:translateY(-1px);}
.btn-outline-light{background:transparent;color:#F1F6EE;border-color:rgba(241,246,238,.42);}
.btn-outline-light:hover{background:rgba(200,242,75,.14);color:#F1F6EE;border-color:var(--lime);}
.btn-sm{padding:10px 14px;font-size:13.5px;}
.btn i{font-size:13px;}

/* ---------- 移动顶栏 ---------- */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:64px;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;
  padding:0 16px;z-index:90;
}
.topbar .brand-lock .brand-mark{width:32px;height:32px;border-radius:9px;font-size:12px;}
.topbar .brand-text b{font-size:14px;color:var(--ink);}
.menu-toggle{
  width:44px;height:44px;border-radius:11px;
  border:1px solid var(--line);color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-size:17px;
  background:var(--paper);
}
.menu-toggle:hover{background:var(--lime-soft);}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:284px;
  background:var(--paper);z-index:120;
  transform:translateX(-100%);
  transition:transform .26s ease;
  display:flex;flex-direction:column;
  padding:18px 16px 24px;gap:16px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer .nav-link{color:var(--ink-80);}
.drawer .nav-link:hover{background:var(--lime-soft);color:var(--ink);}
.drawer .nav-link.is-active{background:var(--lime-soft);color:var(--ink);}
.drawer .nav-dot{background:rgba(14,42,35,.3);}
.drawer .nav-link.is-active .nav-dot{background:var(--ink);}
.drawer-close{
  width:44px;height:44px;border-radius:11px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--ink);
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,42,35,.6);
  opacity:0;pointer-events:none;transition:opacity .26s ease;z-index:110;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}

/* ---------- 主区域 ---------- */
.site-main{margin-left:var(--nav-w);min-height:100vh;}
.wrap{max-width:1240px;margin:0 auto;padding:0 48px;}
.sec{padding:56px 0;}
.sec-tight{padding:40px 0;}
.sec-head{max-width:780px;margin-bottom:30px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.08em;
  color:var(--copper);background:var(--copper-soft);
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.sec-head h2{
  font-size:clamp(26px,2.6vw,34px);font-weight:700;line-height:1.28;
  letter-spacing:-.01em;color:var(--ink);
}
.sec-head p{margin-top:12px;color:var(--muted);font-size:16.5px;max-width:760px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:34px 0 48px;
  background:
    repeating-linear-gradient(90deg,rgba(14,42,35,.045) 0 1px,transparent 1px 96px) no-repeat right top/52% 220px,
    var(--sand);
  overflow:hidden;
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:26px;flex-wrap:wrap;}
.crumb a{color:var(--muted);border-bottom:1px solid transparent;padding-bottom:1px;}
.crumb a:hover{color:var(--ink);border-bottom-color:var(--lime);}
.crumb span{color:var(--copper);font-weight:700;}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;}
.hero h1{
  font-size:clamp(34px,4.2vw,56px);
  font-weight:800;line-height:1.14;letter-spacing:-.02em;
  color:var(--ink);margin-bottom:18px;
}
.hero h1 em{font-style:normal;color:var(--copper);}
.hero-sub{font-size:18px;font-weight:700;color:var(--ink-80);margin-bottom:12px;}
.hero p.lead{color:var(--muted);font-size:16.5px;max-width:640px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:500;color:var(--ink-80);
  background:var(--paper);border:1px solid var(--line);
  border-radius:999px;padding:5px 12px;
}
.tag i{color:var(--copper);font-size:11px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:16px;border:1px solid var(--line);
}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:16px;
  background:linear-gradient(180deg,rgba(14,42,35,.06),rgba(14,42,35,.34));
  pointer-events:none;
}
.hero-chip{
  position:absolute;left:18px;bottom:18px;right:18px;
  background:var(--paper);border:1px solid var(--line);
  border-radius:14px;padding:14px 16px;box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  z-index:2;
}
.hero-chip span{font-size:12.5px;color:var(--muted);letter-spacing:.04em;}
.hero-chip b{font-family:var(--font-num);font-size:15px;color:var(--ink);letter-spacing:.01em;}

/* ---------- 安全声明深色块 ---------- */
.security-banner{
  position:relative;overflow:hidden;
  background:var(--ink);color:#EAF3EC;
  border-radius:22px;padding:44px;
}
.security-banner::before{
  content:"";position:absolute;right:-40px;top:-40px;width:280px;height:280px;
  background-image:radial-gradient(rgba(200,242,75,.35) 1.4px,transparent 1.4px);
  background-size:16px 16px;opacity:.5;pointer-events:none;
}
.security-banner::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--lime);
}
.sb-inner{position:relative;z-index:1;max-width:900px;}
.sb-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;font-weight:700;
  color:var(--ink);background:var(--lime);
  padding:5px 12px;border-radius:6px;margin-bottom:18px;
}
.security-banner h2{
  font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.3;color:#F7FBF4;
  letter-spacing:-.01em;
}
.security-banner p.sb-lead{margin-top:14px;color:rgba(234,243,236,.76);font-size:16.5px;max-width:760px;}
.sb-points{
  margin-top:30px;display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
  border-top:1px solid rgba(234,243,236,.16);padding-top:26px;
}
.sb-point h3{font-size:17px;font-weight:700;color:var(--lime);margin-bottom:8px;}
.sb-point p{font-size:14.5px;line-height:1.75;color:rgba(234,243,236,.72);}
.sb-point .num{
  font-family:var(--font-num);font-size:13px;color:rgba(234,243,236,.45);
  display:block;margin-bottom:8px;letter-spacing:.1em;
}

/* ---------- 安全卡 2×2 ---------- */
.safety-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.safety-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  display:flex;flex-direction:column;gap:14px;
}
.safety-card:hover{transform:translateY(-2px);border-color:var(--lime);box-shadow:var(--shadow-hover);}
.safety-icon{
  width:46px;height:46px;border-radius:13px;
  display:flex;align-items:center;justify-content:center;font-size:19px;
  background:var(--lime-soft);color:var(--ink);
}
.safety-card:nth-child(2n) .safety-icon{background:var(--copper-soft);color:var(--copper);}
.safety-card h3{font-size:21px;font-weight:700;color:var(--ink);line-height:1.35;}
.safety-card p{font-size:15.5px;color:var(--muted);line-height:1.8;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px;}
.tag-row .tag{background:#F7F4EC;font-size:12px;padding:4px 10px;}
.tag-row .tag:hover{border-color:var(--copper);}

/* ---------- 支持渠道 ---------- */
.support-layout{display:grid;grid-template-columns:1.45fr .85fr;gap:28px;align-items:start;}
.channel-list{display:flex;flex-direction:column;gap:12px;}
.channel{
  display:flex;align-items:center;gap:16px;
  background:var(--paper);border:1px solid var(--line);border-radius:14px;
  padding:18px 20px;
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.channel:hover{transform:translateY(-2px);border-color:var(--lime);box-shadow:var(--shadow);}
.channel:hover .channel-go{color:var(--copper);transform:translateX(3px);}
.channel-ico{
  flex:0 0 42px;width:42px;height:42px;border-radius:12px;
  background:var(--sand);color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-size:16px;
}
.channel-body{flex:1 1 auto;min-width:0;}
.channel-body h3{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:3px;}
.channel-body p{font-size:14px;color:var(--muted);line-height:1.65;}
.channel-go{
  flex:0 0 auto;color:var(--ink-70);font-size:14px;
  transition:transform .18s ease,color .18s ease;
}
.support-side{
  background:var(--deep);color:#EAF3EC;border-radius:20px;padding:28px;
  position:sticky;top:32px;
}
.support-side h3{font-size:20px;font-weight:700;color:#F7FBF4;margin-bottom:12px;}
.support-side p{font-size:14.5px;line-height:1.8;color:rgba(234,243,236,.74);}
.support-side dl{margin-top:20px;display:flex;flex-direction:column;gap:14px;}
.support-side dt{font-size:12.5px;letter-spacing:.08em;color:rgba(234,243,236,.5);}
.support-side dd{font-size:16px;font-weight:700;color:var(--lime);font-family:var(--font-num);letter-spacing:.02em;}
.support-side dd.cn{font-family:var(--font-cn);font-size:15px;letter-spacing:0;}
.support-side .btn{margin-top:22px;width:100%;}

/* ---------- FAQ ---------- */
.faq-wrap{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:8px 28px;box-shadow:var(--shadow);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:22px 44px 22px 18px;
  font-size:18px;font-weight:700;color:var(--ink);line-height:1.5;
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:26px;width:3px;height:20px;
  border-radius:2px;background:var(--lime);opacity:0;transition:opacity .2s ease;
}
.faq-item[open] summary::before{opacity:1;}
.faq-item summary::after{
  content:"+";position:absolute;right:12px;top:50%;transform:translateY(-50%);
  font-family:var(--font-num);font-size:22px;color:var(--copper);line-height:1;
}
.faq-item[open] summary::after{content:"−";}
.faq-item summary:hover{color:var(--deep);}
.faq-answer{padding:0 44px 24px 18px;color:var(--muted);font-size:16px;line-height:1.85;}
.faq-answer a{border-bottom:1px solid var(--lime);font-weight:700;}

/* ---------- 下载 CTA ---------- */
.cta-block{
  background:var(--ink);color:#EAF3EC;border-radius:22px;
  padding:48px;position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.5fr .8fr;gap:36px;align-items:center;
}
.cta-block::before{
  content:"";position:absolute;right:-60px;bottom:-70px;width:320px;height:320px;
  border-radius:50%;border:1px solid rgba(200,242,75,.28);
}
.cta-block::after{
  content:"";position:absolute;right:20px;bottom:24px;width:180px;height:180px;
  border-radius:50%;border:1px dashed rgba(200,242,75,.18);
}
.cta-copy{position:relative;z-index:1;}
.cta-copy h2{font-size:clamp(25px,2.5vw,33px);font-weight:700;color:#F7FBF4;line-height:1.28;letter-spacing:-.01em;}
.cta-copy p{margin-top:12px;color:rgba(234,243,236,.74);font-size:16px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.cta-side{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:12px;}
.qr-box{
  width:150px;height:150px;border-radius:14px;background:var(--paper);
  display:flex;align-items:center;justify-content:center;
  color:var(--ink);font-size:12.5px;text-align:center;line-height:1.6;
  border:1px solid rgba(255,253,247,.5);padding:10px;
}
.cta-side small{font-size:12.5px;color:rgba(234,243,236,.6);text-align:center;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#E9F1E7;margin-top:20px;}
.footer-inner{max-width:1240px;margin:0 auto;padding:48px 48px 26px;}
.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;}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;font-size:12px;}
.footer-brand b{font-size:15.5px;color:#F6FAF2;font-weight:700;}
.footer-about{font-size:14px;line-height:1.8;color:rgba(233,241,231,.66);max-width:360px;}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:rgba(233,241,231,.5);font-weight:700;margin-bottom:14px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14.5px;color:rgba(233,241,231,.82);}
.footer-col a:hover{color:var(--lime);}
.footer-dl{color:var(--lime) !important;font-weight:700;}
.footer-bottom{
  margin-top:34px;padding-top:18px;border-top:1px solid rgba(233,241,231,.14);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(233,241,231,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--nav-w:216px;}
  .wrap{padding:0 32px;}
  .footer-inner{padding:44px 32px 24px;}
  .hero-grid{gap:32px;}
  .security-banner{padding:36px;}
  .cta-block{padding:38px;}
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-media{order:-1;}
  .hero-media img{aspect-ratio:16/9;}
  .sb-points{grid-template-columns:1fr;gap:18px;}
  .support-layout{grid-template-columns:1fr;}
  .support-side{position:static;}
  .cta-block{grid-template-columns:1fr;}
  .cta-side{align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
  .side-nav{display:none;}
  .topbar{display:flex;}
  .site-main{margin-left:0;padding-top:64px;}
  .hero{padding:26px 0 38px;background:var(--sand);}
  .hero h1{font-size:clamp(28px,6vw,38px);}
  .sec{padding:42px 0;}
}
@media (max-width:640px){
  .wrap{padding:0 18px;}
  .footer-inner{padding:36px 18px 22px;}
  .safety-grid{grid-template-columns:1fr;gap:16px;}
  .security-banner{padding:26px 22px;border-radius:18px;}
  .security-banner h2{font-size:23px;}
  .faq-wrap{padding:4px 16px;}
  .faq-item summary{font-size:16.5px;padding:18px 38px 18px 14px;}
  .faq-item summary::before{top:22px;}
  .faq-answer{padding:0 30px 20px 14px;font-size:15px;}
  .cta-block{padding:28px 22px;border-radius:18px;}
  .hero-actions .btn{width:100%;}
  .hero-chip{position:static;margin-top:12px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;}
  .channel{padding:15px 16px;}
}
@media (max-width:400px){
  .wrap{padding:0 16px;}
  .hero .tag{font-size:11.5px;}
  .hero-meta{gap:8px;}
}

/* roulang page: category5 */
:root{
  --ink:#0E2A23;
  --lime:#C8F24B;
  --copper:#C96B3B;
  --sand:#F4F0E8;
  --paper:#FFFDF7;
  --deep:#16372E;
  --text:#101C18;
  --muted:#66736C;
  --line:#D8D5CA;
  --err:#B4453A;
  --ok:#2F7A55;
  --r-card:18px;
  --r-img:16px;
  --r-btn:12px;
  --shadow:0 12px 32px rgba(14,42,35,.08);
  --shadow-hover:0 18px 40px rgba(14,42,35,.14);
  --num:"Bahnschrift","DIN Alternate","Noto Sans SC",sans-serif;
  --nav-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .18s ease,background .18s ease,border-color .18s ease}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(200,242,75,.55);outline-offset:2px;border-radius:8px}
.skip-link{position:absolute;left:-9999px;top:0;z-index:300;background:var(--lime);color:var(--ink);padding:10px 18px;border-radius:0 0 10px 0;font-weight:700}
.skip-link:focus{left:0}
body.nav-open{overflow:hidden}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:700;line-height:1.2;cursor:pointer;
  transition:transform .16s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.btn-primary:hover{background:var(--ink);color:var(--lime);border-color:var(--ink);transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-outline:hover{background:rgba(200,242,75,.4);color:var(--ink);transform:translateY(-1px)}
.btn-light{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.btn-light:hover{background:var(--lime);border-color:var(--lime);color:var(--ink);transform:translateY(-1px)}
.btn-ghost-dark{background:transparent;color:#EAF2E7;border-color:rgba(234,242,231,.5)}
.btn-ghost-dark:hover{background:rgba(200,242,75,.18);border-color:var(--lime);color:#FFFDF7;transform:translateY(-1px)}
.btn-sm{padding:9px 14px;font-size:13.5px;border-radius:10px}
.btn-block{width:100%}

/* ===== 侧栏 ===== */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--ink);color:#E7EFE6;padding:26px 18px 22px;
  display:flex;flex-direction:column;gap:24px;z-index:80;
  overflow-y:auto;scrollbar-width:thin;
}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
  flex:0 0 auto;width:38px;height:38px;border-radius:11px;
  background:var(--lime);color:var(--ink);display:grid;place-items:center;
  font:800 12.5px/1 var(--num);letter-spacing:.04em;
}
.brand-text b{display:block;font-size:15px;color:#FFFDF7;line-height:1.3;font-weight:800}
.brand-text em{display:block;font-style:normal;font-size:11.5px;color:rgba(231,239,230,.62);letter-spacing:.02em;margin-top:2px}
.nav-label{font-size:11.5px;letter-spacing:.16em;color:rgba(231,239,230,.45);padding-left:12px;margin-bottom:8px;text-transform:uppercase}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-link{
  display:flex;align-items:center;gap:10px;min-height:44px;padding:0 12px;
  border-radius:10px;font-size:14.5px;color:rgba(231,239,230,.78);
  position:relative;transition:background .18s ease,color .18s ease;
}
.nav-dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.45;flex:0 0 auto;transition:background .18s ease,opacity .18s ease}
.nav-link:hover{background:rgba(200,242,75,.12);color:#FFFDF7}
.nav-link:hover .nav-dot{opacity:.9}
.nav-link.is-active{
  background:rgba(200,242,75,.16);color:#F6FFDC;font-weight:700;
  box-shadow:inset 3px 0 0 var(--lime);padding-left:15px;
}
.nav-link.is-active .nav-dot{background:var(--lime);opacity:1}
.nav-foot{margin-top:auto;display:flex;flex-direction:column;gap:8px;padding-top:18px;border-top:1px solid rgba(231,239,230,.14)}
.nav-note{font-size:12px;color:rgba(231,239,230,.52);padding-left:2px;margin-top:4px}
.nav-close{
  display:none;position:absolute;top:14px;right:14px;width:44px;height:44px;
  border:1px solid rgba(231,239,230,.28);border-radius:12px;background:transparent;
  color:#E7EFE6;font-size:20px;line-height:1;cursor:pointer;
}
.nav-close:hover{background:rgba(200,242,75,.16);color:#FFFDF7}

/* ===== 移动顶栏 & 抽屉 ===== */
.mobile-bar{display:none}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,42,35,.6);z-index:75;
  opacity:0;pointer-events:none;transition:opacity .26s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.menu-btn{
  width:44px;height:44px;border-radius:12px;border:1px solid rgba(231,239,230,.3);
  background:transparent;display:grid;place-items:center;gap:4px;cursor:pointer;padding:0;
}
.menu-btn span{display:block;width:18px;height:2px;background:#EAF2E7;border-radius:2px}
.menu-btn:hover{background:rgba(200,242,75,.15);border-color:var(--lime)}

/* ===== 内容框架 ===== */
.content{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
main{flex:1;width:100%;max-width:1240px;margin:0 auto;padding:32px 48px 0}
.section{margin-top:56px}
.section:first-child{margin-top:0}
.section-head{max-width:800px;margin-bottom:24px}
.section-head h2{font-size:clamp(24px,2.4vw,32px);font-weight:800}
.section-head p{color:var(--muted);font-size:15.5px;margin-top:10px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:999px;
  background:rgba(201,107,59,.12);color:var(--copper);font-size:12.5px;font-weight:700;
  letter-spacing:.06em;margin-bottom:14px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--copper);display:inline-block}

/* ===== Hero ===== */
.hero{
  background:var(--paper);border:1px solid var(--line);border-radius:22px;overflow:hidden;
  display:grid;grid-template-columns:1.08fr .92fr;box-shadow:var(--shadow);
}
.hero-body{padding:44px 40px 40px}
.hero h1{font-size:clamp(28px,3.1vw,44px);font-weight:800;letter-spacing:-.02em;line-height:1.2}
.hero h1 span{color:var(--ink);background:linear-gradient(transparent 66%,rgba(200,242,75,.7) 66%)}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.85;color:var(--muted);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-meta{display:flex;flex-wrap:wrap;gap:20px;margin-top:26px;padding-top:20px;border-top:1px solid var(--line)}
.hero-meta div{font-size:13px;color:var(--muted)}
.hero-meta b{display:block;font-family:var(--num);font-size:19px;color:var(--ink);font-weight:700;letter-spacing:-.01em}
.hero-figure{position:relative;min-height:320px;background:var(--deep)}
.hero-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,42,35,.18),rgba(14,42,35,.62));
}
.hero-card{
  position:absolute;left:22px;right:22px;bottom:22px;z-index:2;
  background:rgba(14,42,35,.94);border:1px solid rgba(200,242,75,.35);
  border-radius:14px;padding:16px 18px;color:#EAF2E7;
}
.hero-card .hc-row{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-size:13px}
.hero-card .hc-row + .hc-row{margin-top:8px;padding-top:8px;border-top:1px dashed rgba(234,242,231,.22)}
.hero-card b{font-family:var(--num);color:var(--lime);font-size:14px}

/* ===== 标签 / 筛选 ===== */
.tag{display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;font-size:12.5px;font-weight:700;letter-spacing:.02em}
.tag-lime{background:rgba(200,242,75,.55);color:#183A2C}
.tag-copper{background:rgba(201,107,59,.16);color:#9E4E27}
.tag-line{border:1px solid var(--line);color:var(--muted);background:transparent}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.filter-chip{
  padding:9px 16px;border-radius:999px;border:1px solid var(--line);background:var(--paper);
  color:var(--muted);font-size:14px;font-weight:600;cursor:pointer;transition:all .18s ease;
}
.filter-chip:hover{border-color:var(--lime);color:var(--ink);background:rgba(200,242,75,.2)}
.filter-chip.is-active{background:var(--ink);border-color:var(--ink);color:var(--lime)}

/* ===== 资讯卡 ===== */
.news-lead{
  display:grid;grid-template-columns:1.02fr .98fr;gap:0;overflow:hidden;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.news-lead:hover{transform:translateY(-2px);border-color:var(--lime);box-shadow:var(--shadow-hover)}
.news-lead figure{margin:0;position:relative;background:var(--deep);overflow:hidden}
.news-lead figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;border-radius:0}
.news-lead-body{padding:30px 32px;display:flex;flex-direction:column;gap:12px}
.news-lead-body h3{font-size:clamp(20px,2vw,26px);font-weight:800;line-height:1.35}
.news-lead-body p{color:var(--muted);font-size:15.5px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--muted)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
.more-link{margin-top:auto;display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14.5px;color:var(--ink);align-self:flex-start}
.more-link::after{content:"→";transition:transform .18s ease}
.more-link:hover{color:var(--copper);box-shadow:inset 0 -2px 0 var(--lime)}
.more-link:hover::after{transform:translateX(3px)}

.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:20px}
.news-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.news-card:hover{transform:translateY(-2px);border-color:var(--copper);box-shadow:var(--shadow-hover)}
.news-card figure{margin:0;overflow:hidden;background:var(--deep)}
.news-card figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease}
.news-card:hover figure img{transform:scale(1.03)}
.news-card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-card-body h3{font-size:18.5px;font-weight:700;line-height:1.45}
.news-card-body p{font-size:14.5px;color:var(--muted);line-height:1.75}

/* ===== 标签 + 下载双栏 ===== */
.dual{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
.panel{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);padding:28px 30px}
.panel h3{font-size:20px;font-weight:800;margin-bottom:8px}
.panel p{color:var(--muted);font-size:14.5px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.tag-cloud a{
  padding:8px 15px;border-radius:999px;border:1px solid var(--line);
  font-size:14px;color:var(--muted);background:var(--paper);
}
.tag-cloud a:hover{border-color:var(--ink);background:rgba(200,242,75,.32);color:var(--ink)}
.dl-panel{background:var(--deep);border:1px solid var(--deep);color:#EAF2E7;display:flex;flex-direction:column;gap:14px}
.dl-panel h3{color:#FFFDF7}
.dl-panel p{color:rgba(234,242,231,.72)}
.dl-panel .btn-block + .btn-block{margin-top:0}
.dl-list{display:flex;flex-direction:column;gap:8px;font-size:13.5px;color:rgba(234,242,231,.72);margin-top:4px}
.dl-list li{display:flex;gap:8px;align-items:flex-start}
.dl-list li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--lime);margin-top:9px;flex:0 0 auto}

/* ===== 分页 ===== */
.pager{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:32px;flex-wrap:wrap}
.pager a,.pager span{
  min-width:42px;height:42px;padding:0 14px;border-radius:10px;border:1px solid var(--line);
  background:var(--paper);display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:600;color:var(--muted);
}
.pager a:hover{border-color:var(--ink);color:var(--ink);background:rgba(200,242,75,.28)}
.pager .is-current{background:var(--ink);border-color:var(--ink);color:var(--lime)}
.pager .is-disabled{opacity:.5;cursor:not-allowed}

/* ===== FAQ ===== */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:18px 0;transition:padding .2s ease}
.faq details[open]{border-left:3px solid var(--lime);padding-left:18px}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
  gap:18px;font-size:18px;font-weight:700;color:var(--ink);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";flex:0 0 auto;width:28px;height:28px;border-radius:8px;
  border:1px solid var(--line);display:grid;place-items:center;font-size:16px;font-weight:700;color:var(--muted);
}
.faq details[open] summary::after{content:"–";background:var(--lime);border-color:var(--lime);color:var(--ink)}
.faq summary:hover{color:var(--copper)}
.faq .faq-a{margin-top:12px;font-size:15.5px;color:var(--muted);line-height:1.85;max-width:820px}

/* ===== CTA ===== */
.cta{
  background:var(--ink);color:#EAF2E7;border-radius:22px;padding:44px 44px;
  display:grid;grid-template-columns:1.25fr .75fr;gap:28px;align-items:center;
  position:relative;overflow:hidden;
}
.cta::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(200,242,75,.22),transparent 68%);
}
.cta h2{font-size:clamp(22px,2.4vw,30px);color:#FFFDF7;font-weight:800}
.cta p{color:rgba(234,242,231,.74);font-size:15.5px;margin-top:12px;max-width:600px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;position:relative;z-index:2}

/* ===== 页脚 ===== */
.site-footer{background:var(--ink);color:#DDE7DF;margin-top:64px;padding:56px 0 26px}
.footer-inner{max-width:1240px;margin:0 auto;padding:0 48px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand b{color:#FFFDF7;font-size:16px;font-weight:800}
.footer-about{margin-top:14px;font-size:14px;line-height:1.85;color:rgba(221,231,223,.7);max-width:340px}
.footer-col h4{font-size:14px;color:#FFFDF7;letter-spacing:.06em;margin-bottom:14px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(221,231,223,.74)}
.footer-col a:hover{color:var(--lime)}
.footer-dl{color:var(--lime)!important;font-weight:700}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(221,231,223,.16);
  font-size:13px;color:rgba(221,231,223,.6);
}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  :root{--nav-w:216px}
  main{padding:28px 32px 0}
  .footer-inner{padding:0 32px}
  .hero-body{padding:34px 30px 32px}
  .news-lead-body{padding:26px 26px}
  .cta{padding:36px 32px}
}
@media (max-width:960px){
  .hero{grid-template-columns:1fr}
  .hero-figure{min-height:260px;order:-1}
  .hero-figure img{aspect-ratio:16/9}
  .news-lead{grid-template-columns:1fr}
  .dual{grid-template-columns:1fr}
  .cta{grid-template-columns:1fr}
  .cta-actions{justify-content:flex-start}
}
@media (max-width:900px){
  .side-nav{transform:translateX(-100%);transition:transform .28s ease;width:290px;box-shadow:0 0 50px rgba(0,0,0,.4)}
  .side-nav.is-open{transform:translateX(0)}
  .side-nav .nav-close{display:block}
  .mobile-bar{
    display:flex;position:sticky;top:0;z-index:70;height:64px;align-items:center;
    justify-content:space-between;gap:12px;padding:0 18px;background:var(--ink);color:#FFFDF7;
    border-bottom:1px solid rgba(200,242,75,.2);
  }
  .mobile-bar .brand-text b{font-size:14.5px}
  .mobile-bar .brand-mark{width:34px;height:34px}
  .content{margin-left:0}
  main{padding:24px 22px 0}
  .footer-inner{padding:0 22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .news-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  body{font-size:15.5px}
  .hero-body{padding:26px 20px 26px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{flex:1 1 auto}
  .hero-meta{gap:14px}
  .section{margin-top:44px}
  .panel{padding:22px 20px}
  .news-lead-body{padding:22px 20px}
  .news-card-body{padding:18px 18px 20px}
  .cta{padding:28px 20px;border-radius:18px}
  .cta-actions .btn{flex:1 1 100%}
  .faq summary{font-size:16.5px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:6px}
  .hero-card{left:14px;right:14px;bottom:14px;padding:12px 14px}
}
@media (max-width:400px){
  main{padding:18px 16px 0}
  .footer-inner{padding:0 16px}
  .filter-chip{padding:8px 12px;font-size:13px}
  .pager a,.pager span{min-width:38px;height:38px;padding:0 10px}
}