/* roulang page: index */
:root{
  --c-primary:#0F7A63;
  --c-primary-dark:#0B5F4D;
  --c-primary-light:#2AC3A6;
  --c-accent:#F0762A;
  --c-accent-dark:#C95A15;
  --c-ink:#0F1512;
  --c-ink-2:#1C2622;
  --c-bg:#F7F5F0;
  --c-bg-2:#EDEAE2;
  --c-card:#FFFFFF;
  --c-line:#DED9CE;
  --c-text:#1A211D;
  --c-text-2:#5C665F;
  --c-on-ink:#F4F2EC;
  --c-error:#C0392B;
  --c-success:#1B7F4B;
  --ff-base:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,sans-serif;
  --ff-num:"Manrope","Inter",system-ui,-apple-system,"PingFang SC",sans-serif;
  --r-s:8px;--r-m:14px;--r-l:20px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(15,21,18,.06),0 10px 26px -14px rgba(15,21,18,.20);
  --sh-2:0 2px 4px rgba(15,21,18,.07),0 20px 38px -20px rgba(15,21,18,.30);
  --sp:8px;
  --section:96px;
  --side-w:232px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--c-bg);color:var(--c-text);font-family:var(--ff-base);font-size:16.5px;line-height:1.85;letter-spacing:.01em;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--c-primary-dark);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--c-primary)}
img{max-width:100%;display:block;height:auto}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input{font:inherit}
svg{display:block}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}
.sec{padding:var(--section) 0}
.sec-tight{padding:64px 0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--c-primary);font-family:var(--ff-num);font-weight:700}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.sec-head h2{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:-.01em}
.sec-head p{color:var(--c-text-2);font-size:15px;max-width:560px;margin-top:8px}
.more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary-dark)}
.more svg{transition:transform .18s var(--ease)}
.more:hover svg{transform:translateX(3px)}

/* ===== 侧栏导航 ===== */
.layout{display:flex;align-items:flex-start;min-height:100vh}
.sidebar{position:sticky;top:0;height:100vh;flex:0 0 var(--side-w);width:var(--side-w);display:flex;flex-direction:column;gap:8px;background:var(--c-ink);color:var(--c-on-ink);border-right:1px solid rgba(255,255,255,.08);padding:22px 0 18px;z-index:70;overflow-y:auto}
.brand{display:flex;align-items:center;gap:12px;padding:0 20px 18px;color:var(--c-on-ink)}
.brand:hover{color:#fff}
.brand-mark{width:30px;height:30px;flex:0 0 30px;color:var(--c-accent)}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.02em;line-height:1.2}
.nav{display:flex;flex-direction:column;gap:2px;padding:8px 0}
.nav-item{position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 20px;font-size:15px;color:rgba(244,242,236,.72);transition:background .16s var(--ease),color .16s var(--ease)}
.nav-item svg{width:18px;height:18px;flex:0 0 18px;opacity:.85}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.is-active{background:rgba(255,255,255,.09);color:#fff;font-weight:600}
.nav-item.is-active::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:0 3px 3px 0;background:var(--c-accent)}
.side-tools{margin-top:auto;padding:18px 20px 0;border-top:1px solid rgba(255,255,255,.08)}
.side-search{display:flex;align-items:center;gap:8px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.04);border-radius:var(--r-m);padding:0 10px;height:42px;transition:border-color .18s var(--ease),background .18s var(--ease)}
.side-search:focus-within{border-color:var(--c-primary-light);background:rgba(42,195,166,.08)}
.side-search input{flex:1;min-width:0;background:none;border:0;color:var(--c-on-ink);font-size:13.5px;height:100%;outline:none}
.side-search input::placeholder{color:rgba(244,242,236,.45)}
.side-search button{color:var(--c-accent);display:grid;place-items:center;width:26px;height:26px;border-radius:6px}
.side-search button:hover{background:rgba(240,118,42,.16)}
.side-note{margin-top:12px;font-size:12.5px;line-height:1.7;color:rgba(244,242,236,.55)}

/* ===== 移动端顶栏 ===== */
.mobile-bar{display:none;position:sticky;top:0;z-index:80;height:64px;align-items:center;justify-content:space-between;padding:0 20px;background:var(--c-ink);color:var(--c-on-ink);border-bottom:1px solid rgba(255,255,255,.1)}
.mobile-bar .brand{padding:0}
.hamb{width:44px;height:44px;display:grid;place-items:center;border-radius:var(--r-s);color:var(--c-on-ink)}
.hamb:hover{background:rgba(255,255,255,.1)}
.drawer-mask{position:fixed;inset:0;background:rgba(15,21,18,.55);opacity:0;pointer-events:none;transition:opacity .24s var(--ease);z-index:90}
.drawer{position:fixed;top:0;right:0;bottom:0;width:84%;max-width:360px;background:var(--c-ink);color:var(--c-on-ink);z-index:100;transform:translateX(100%);transition:transform .28s var(--ease);display:flex;flex-direction:column;padding:18px 0;overflow-y:auto}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open .drawer-mask{opacity:1;pointer-events:auto}
body.drawer-open{overflow:hidden}
.drawer-close{position:absolute;right:12px;top:12px;width:40px;height:40px;display:grid;place-items:center;border-radius:var(--r-s);color:rgba(244,242,236,.8)}
.drawer-close:hover{background:rgba(255,255,255,.1);color:#fff}
.drawer .brand{padding:6px 20px 18px;margin-top:26px}

/* ===== 主区 ===== */
.page{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
main{flex:1 1 auto}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;background:var(--c-ink)}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;transform:scale(1.02)}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,16,14,.90) 0%,rgba(10,16,14,.72) 46%,rgba(10,16,14,.30) 100%)}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,4fr);gap:40px;align-items:center;padding:76px 0 84px;min-height:500px}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.hero-badges span{font-size:12.5px;line-height:1.6;padding:5px 12px;border-radius:var(--r-pill);border:1px solid rgba(244,242,236,.28);color:rgba(244,242,236,.88);background:rgba(255,255,255,.06)}
.hero h1{font-size:clamp(30px,4vw,46px);line-height:1.25;font-weight:800;color:#fff;letter-spacing:-.015em}
.hero h1 em{font-style:normal;color:var(--c-primary-light)}
.hero-sub{margin-top:18px;font-size:18px;line-height:1.8;color:rgba(244,242,236,.82);max-width:580px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-figure{position:relative;border-radius:var(--r-l);overflow:hidden;box-shadow:0 30px 60px -30px rgba(0,0,0,.8);border:1px solid rgba(255,255,255,.12)}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--c-bg-2)}
.hero-figure figcaption{position:absolute;left:0;right:0;bottom:0;padding:12px 16px;font-size:12.5px;color:#fff;background:linear-gradient(to top,rgba(10,16,14,.86),rgba(10,16,14,0))}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 24px;border-radius:var(--r-m);font-size:15px;font-weight:600;line-height:1.2;letter-spacing:.01em;transition:transform .16s var(--ease),background .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease),color .16s var(--ease);white-space:nowrap}
.btn svg{width:18px;height:18px;flex:0 0 18px}
.btn-primary{background:var(--c-accent);color:#14100A;border:1px solid var(--c-accent)}
.btn-primary:hover{background:var(--c-accent-dark);border-color:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--c-on-ink);border:1px solid rgba(244,242,236,.45)}
.btn-ghost:hover{border-color:var(--c-primary-light);color:#fff;background:rgba(42,195,166,.14)}
.btn-line{background:transparent;color:var(--c-primary-dark);border:1px solid var(--c-line)}
.btn-line:hover{border-color:var(--c-primary);background:rgba(15,122,99,.08);color:var(--c-primary-dark)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ===== 专题合集 ===== */
.topic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.topic-card{position:relative;display:flex;flex-direction:column;gap:10px;padding:26px 24px 22px;background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-l);box-shadow:var(--sh-1);transition:transform .28s var(--ease),background .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease),color .28s var(--ease);min-height:200px}
.topic-card .num{font-family:var(--ff-num);font-size:34px;font-weight:800;line-height:1;color:var(--c-primary);letter-spacing:-.02em;transition:color .28s var(--ease)}
.topic-card h3{font-size:22px;line-height:1.5;font-weight:700;color:var(--c-text);transition:color .28s var(--ease)}
.topic-card p{font-size:14px;line-height:1.75;color:var(--c-text-2);transition:color .28s var(--ease)}
.topic-card .meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);font-size:12.5px;color:var(--c-text-2);transition:border-color .28s var(--ease),color .28s var(--ease)}
.topic-card .meta svg{width:18px;height:18px;transition:transform .24s var(--ease)}
.topic-card:hover{background:var(--c-ink);border-color:var(--c-ink);color:var(--c-on-ink);transform:translateY(-4px);box-shadow:var(--sh-2)}
.topic-card:hover h3{color:#fff}
.topic-card:hover p{color:rgba(244,242,236,.72)}
.topic-card:hover .num{color:var(--c-accent)}
.topic-card:hover .meta{color:rgba(244,242,236,.72);border-color:rgba(255,255,255,.14)}
.topic-card:hover .meta svg{transform:translateX(4px)}

/* ===== 最新信息（时间轴列表） ===== */
.news-wrap{background:var(--c-bg-2);border-radius:var(--r-l);padding:8px 32px}
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px}
.news-item{display:grid;grid-template-columns:66px minmax(0,1fr);gap:20px;padding:24px 0;border-bottom:1px solid var(--c-line)}
.news-item:hover .news-title{color:var(--c-primary-dark)}
.tl-date{display:flex;flex-direction:column;align-items:center;justify-content:flex-start;gap:2px;font-family:var(--ff-num);padding-top:2px}
.tl-day{font-size:26px;font-weight:800;line-height:1;color:var(--c-primary);letter-spacing:-.02em}
.tl-ym{font-size:11.5px;letter-spacing:.06em;color:var(--c-text-2);line-height:1.6}
.news-body{min-width:0}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;line-height:1.6;padding:3px 10px;border-radius:var(--r-pill);background:rgba(15,122,99,.10);color:var(--c-primary-dark);font-weight:600}
.badge-accent{background:rgba(240,118,42,.12);color:var(--c-accent-dark)}
.news-title{display:block;margin-top:8px;font-size:17px;line-height:1.6;font-weight:600;color:var(--c-text);transition:color .18s var(--ease)}
.news-desc{margin-top:8px;font-size:14px;line-height:1.75;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-link{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-size:13px;font-weight:600;color:var(--c-primary-dark)}
.news-link svg{width:15px;height:15px;transition:transform .18s var(--ease)}
.news-link:hover svg{transform:translateX(3px)}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:64px 20px;color:var(--c-text-2)}
.empty-state svg{width:40px;height:40px;color:var(--c-primary)}
.empty-state p{font-size:15px}

/* ===== 参数对照 ===== */
.spec-layout{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,7fr);gap:56px;align-items:start}
.spec-intro h2{font-size:30px;line-height:1.35;font-weight:700}
.spec-intro p{margin-top:16px;font-size:15.5px;line-height:1.85;color:var(--c-text-2)}
.spec-list{border-top:1px solid var(--c-line)}
.spec-row{display:grid;grid-template-columns:120px 120px minmax(0,1fr);gap:24px;align-items:baseline;padding:22px 0;border-bottom:1px solid var(--c-line);transition:background .18s var(--ease)}
.spec-row:hover{background:rgba(15,122,99,.045)}
.spec-key{font-size:14px;font-weight:600;color:var(--c-text-2)}
.spec-val{font-family:var(--ff-num);font-size:24px;font-weight:800;color:var(--c-primary-dark);line-height:1.2;letter-spacing:-.01em}
.spec-val small{font-size:13px;font-weight:600;color:var(--c-text-2);margin-left:2px;font-family:var(--ff-base)}
.spec-note{font-size:14px;line-height:1.75;color:var(--c-text-2)}

/* ===== 场景图文 ===== */
.scene{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:48px;align-items:center;padding:var(--section) 0}
.scene + .scene{padding-top:0}
.scene-figure{border-radius:var(--r-l);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-1);background:var(--c-bg-2)}
.scene-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .32s var(--ease)}
.scene-figure:hover img{transform:scale(1.04)}
.scene-text h2{font-size:28px;line-height:1.4;font-weight:700;letter-spacing:-.01em}
.scene-text p{margin-top:16px;font-size:15.5px;line-height:1.9;color:var(--c-text-2)}
.check-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.check-list li{display:flex;gap:10px;font-size:15px;line-height:1.8;color:var(--c-text)}
.check-list svg{width:18px;height:18px;flex:0 0 18px;margin-top:5px;color:var(--c-primary)}
.scene-alt .scene-figure{order:2}
.scene-alt .scene-text{order:1}

/* ===== 数据证据 ===== */
.evidence{background:var(--c-ink);color:var(--c-on-ink);border-radius:var(--r-l);padding:56px 48px}
.evidence-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:end;margin-bottom:40px}
.evidence h2{font-size:30px;line-height:1.35;font-weight:700;color:#fff}
.evidence-head p{font-size:15px;line-height:1.85;color:rgba(244,242,236,.72)}
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.stat{padding:24px 22px;border-radius:var(--r-m);border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.04);transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease)}
.stat:hover{border-color:rgba(42,195,166,.5);background:rgba(42,195,166,.08);transform:translateY(-3px)}
.stat b{display:block;font-family:var(--ff-num);font-size:34px;font-weight:800;line-height:1.1;color:var(--c-accent);letter-spacing:-.02em}
.stat b span{font-size:15px;font-weight:700;margin-left:2px;color:rgba(244,242,236,.8)}
.stat p{margin-top:10px;font-size:13.5px;line-height:1.7;color:rgba(244,242,236,.7)}

/* ===== FAQ ===== */
.faq{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-1)}
.faq-item + .faq-item{border-top:1px solid var(--c-line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;text-align:left;padding:18px 24px;min-height:56px;font-size:17px;font-weight:500;line-height:1.6;color:var(--c-text);transition:background .18s var(--ease),color .18s var(--ease)}
.faq-q:hover{background:var(--c-bg)}
.faq-q .plus{width:20px;height:20px;flex:0 0 20px;color:var(--c-primary);transition:transform .2s var(--ease)}
.faq-item.open .faq-q{color:var(--c-primary-dark);box-shadow:inset 3px 0 0 var(--c-accent)}
.faq-item.open .plus{transform:rotate(45deg)}
.faq-a{display:none;padding:0 24px 22px 24px;font-size:15.5px;line-height:1.85;color:var(--c-text-2)}
.faq-item.open .faq-a{display:block}

/* ===== 横向推荐 ===== */
.rail-wrap{position:relative}
.rail{display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 18px;scrollbar-width:none;-ms-overflow-style:none}
.rail::-webkit-scrollbar{display:none}
.rail-wrap::before,.rail-wrap::after{content:"";position:absolute;top:0;bottom:18px;width:56px;pointer-events:none;z-index:2}
.rail-wrap::before{left:0;background:linear-gradient(to right,var(--c-bg),rgba(247,245,240,0))}
.rail-wrap::after{right:0;background:linear-gradient(to left,var(--c-bg),rgba(247,245,240,0))}
.rail-card{flex:0 0 280px;scroll-snap-align:start;background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-1);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);display:flex;flex-direction:column}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,122,99,.3)}
.rail-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-bg-2)}
.rail-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.rail-card:hover .rail-thumb img{transform:scale(1.04)}
.rail-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px}
.rail-body h3{font-size:16.5px;line-height:1.55;font-weight:600;color:var(--c-text)}
.rail-card:hover h3{color:var(--c-primary-dark)}
.rail-body time{font-size:12.5px;color:var(--c-text-2);font-family:var(--ff-num);letter-spacing:.04em}

/* ===== CTA ===== */
.cta{background:var(--c-ink);border-radius:var(--r-l);padding:52px 48px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:center}
.cta h2{font-size:30px;line-height:1.35;font-weight:700;color:#fff}
.cta p{margin-top:12px;font-size:15px;line-height:1.85;color:rgba(244,242,236,.7);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-toast{margin-top:16px;font-size:13.5px;color:var(--c-primary-light);min-height:20px}

/* ===== 页脚 ===== */
.footer{background:var(--c-ink-2);color:rgba(244,242,236,.78);margin-top:var(--section);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));gap:40px;padding-bottom:44px}
.footer .brand{padding:0 0 14px;color:var(--c-on-ink)}
.footer .brand:hover{color:#fff}
.footer-about{font-size:14px;line-height:1.85;color:rgba(244,242,236,.62);max-width:320px}
.footer h4{font-size:14px;font-weight:700;color:var(--c-accent);margin-bottom:16px;letter-spacing:.02em}
.footer li + li{margin-top:10px}
.footer a{font-size:14px;color:rgba(244,242,236,.74)}
.footer a:hover{color:#fff}
.footer-contact{font-size:14px;line-height:1.9;color:rgba(244,242,236,.62)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:rgba(244,242,236,.5)}

/* ===== 响应式 ===== */
@media (max-width:1439px){
  .container{max-width:1120px}
}
@media (max-width:1279px){
  :root{--side-w:216px}
  .topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  :root{--section:72px}
  .sidebar{display:none}
  .mobile-bar{display:flex}
  .container{padding:0 28px}
  .hero-inner{grid-template-columns:1fr;min-height:0;padding:56px 0 60px;gap:32px}
  .hero-figure{max-width:520px}
  .spec-layout{grid-template-columns:1fr;gap:32px}
  .scene{grid-template-columns:1fr;gap:28px}
  .scene-alt .scene-figure{order:0}
  .scene-alt .scene-text{order:1}
  .news-grid{grid-template-columns:1fr}
  .news-wrap{padding:8px 24px}
  .evidence{padding:44px 32px}
  .evidence-head{grid-template-columns:1fr;gap:16px;align-items:start}
  .cta{grid-template-columns:1fr;padding:40px 32px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (min-width:1024px) and (max-width:1279px){
  .sidebar{width:76px;flex-basis:76px}
  .brand{padding:0 0 18px;justify-content:center}
  .brand-name{display:none}
  .nav-item{justify-content:center;padding:0}
  .nav-item span{display:none}
  .side-tools{padding:16px 0 0;display:flex;justify-content:center}
  .side-search{width:44px;height:44px;padding:0;justify-content:center}
  .side-search input,.side-note{display:none}
  .side-search button{width:44px;height:44px}
}
@media (max-width:768px){
  :root{--section:56px}
  body{font-size:16px}
  .container{padding:0 20px}
  .sec-head h2,.spec-intro h2,.scene-text h2,.evidence h2,.cta h2{font-size:24px}
  .topic-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .topic-card{padding:20px 18px 18px;min-height:180px}
  .topic-card h3{font-size:19px}
  .news-item{grid-template-columns:54px minmax(0,1fr);gap:16px}
  .tl-day{font-size:22px}
  .spec-row{grid-template-columns:1fr;gap:6px;padding:18px 0}
  .spec-val{font-size:22px}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .evidence{padding:32px 20px}
  .faq-q{font-size:16px;padding:16px 18px}
  .faq-a{padding:0 18px 18px}
  .cta{padding:32px 20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer{margin-top:56px}
}
@media (max-width:560px){
  .hero-inner{padding:44px 0 48px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .topic-grid{grid-template-columns:1fr}
  .rail-card{flex-basis:82%}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .topic-card:hover,.stat:hover,.rail-card:hover,.scene-figure:hover img,.rail-card:hover .rail-thumb img{transform:none}
}

/* roulang page: article */
:root{
  --main:#0F7A63;--main-d:#0B5F4D;--main-l:#2AC3A6;
  --accent:#F0762A;--accent-d:#C95A15;
  --ink:#0F1512;--ink-2:#1C2622;
  --bg:#F7F5F0;--bg-2:#EDEAE2;--card:#FFFFFF;
  --line:#DED9CE;--text:#1A211D;--muted:#5C665F;--inv:#F4F2EC;
  --err:#C0392B;--ok:#1B7F4B;
  --r-s:8px;--r-m:14px;--r-l:20px;--r-p:999px;
  --sh-1:0 1px 2px rgba(15,21,18,.06),0 10px 26px -14px rgba(15,21,18,.20);
  --sh-2:0 2px 6px rgba(15,21,18,.08),0 20px 38px -18px rgba(15,21,18,.30);
  --ff:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,sans-serif;
  --ff-num:Manrope,Inter,system-ui,-apple-system,sans-serif;
  --sidebar-w:232px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--ff);font-size:16.5px;line-height:1.85;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--main-d);text-decoration:none;transition:color .16s ease}
a:hover{color:var(--main)}
img{max-width:100%;display:block}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit;font-size:inherit}
svg{display:block}
:focus-visible{outline:2px solid var(--main);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}

/* ---------- 左侧竖向导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:var(--ink);color:var(--inv);display:flex;flex-direction:column;
  border-right:1px solid rgba(255,255,255,.08);z-index:60;
  padding:22px 0 18px;
}
.brand{display:flex;align-items:center;gap:10px;padding:0 20px 18px;color:var(--inv)}
.brand:hover{color:#fff}
.brand-mark{width:30px;height:30px;color:var(--accent);flex:none}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.sidebar .brand{border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:14px;padding-bottom:18px}
.nav{display:flex;flex-direction:column;gap:2px;padding:0 10px;flex:1 1 auto;overflow-y:auto}
.nav-item{
  display:flex;align-items:center;gap:12px;min-height:44px;padding:0 12px 0 10px;
  border-radius:var(--r-s);color:rgba(244,242,236,.78);font-size:15px;
  border-left:3px solid transparent;transition:background .16s ease,color .16s ease;
  white-space:nowrap;
}
.nav-item svg{width:18px;height:18px;flex:none}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.is-active{background:rgba(255,255,255,.09);border-left-color:var(--accent);color:#fff}
.side-tools{padding:16px 20px 0;border-top:1px solid rgba(255,255,255,.08);margin-top:12px}
.side-search{position:relative}
.side-search input{
  width:100%;height:40px;padding:0 12px;border-radius:var(--r-s);
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.16);
  color:var(--inv);font-size:14px;transition:border-color .16s ease,box-shadow .16s ease;
}
.side-search input::placeholder{color:rgba(244,242,236,.45)}
.side-search input:focus{outline:none;border-color:var(--main-l);box-shadow:0 0 0 3px rgba(42,195,166,.16)}
.side-note{margin-top:10px;font-size:12.5px;line-height:1.6;color:rgba(244,242,236,.6)}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
  background:var(--ink);color:var(--inv);align-items:center;justify-content:space-between;
  padding:0 16px;border-bottom:1px solid rgba(255,255,255,.08);
}
.topbar .brand{padding:0}
.topbar .brand-name{font-size:16px}
.hamburger{
  width:44px;height:44px;display:grid;place-items:center;border-radius:var(--r-s);
  border:1px solid rgba(255,255,255,.18);color:var(--inv);
}
.hamburger:hover{background:rgba(255,255,255,.08)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,21,18,.55);opacity:0;visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;z-index:80;
}
.drawer{
  position:fixed;top:0;right:0;width:84%;max-width:340px;height:100%;
  background:var(--ink);color:var(--inv);z-index:90;transform:translateX(100%);
  transition:transform .28s cubic-bezier(.2,.7,.3,1);display:flex;flex-direction:column;
  padding:20px 16px;overflow-y:auto;
}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
body.drawer-open{overflow:hidden}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-close{width:40px;height:40px;display:grid;place-items:center;border-radius:var(--r-s);border:1px solid rgba(255,255,255,.18)}
.drawer .nav{padding:0;overflow:visible}
.drawer .side-tools{padding:16px 0 0}

/* ---------- 主内容 ---------- */
.main-wrap{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
.page{padding:36px 0 64px;flex:1 1 auto}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:22px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--main)}
.crumbs .sep{opacity:.6}
.crumbs .cur{color:var(--text);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-head{max-width:940px}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-p);
  background:rgba(15,122,99,.10);color:var(--main-d);font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.badge-warm{background:rgba(240,118,42,.13);color:var(--accent-d)}
.article-head h1{
  font-size:clamp(30px,4vw,46px);line-height:1.25;font-weight:800;letter-spacing:.005em;
  margin:16px 0 18px;color:var(--ink);
}
.meta-row{display:flex;flex-wrap:wrap;gap:16px;font-size:12.5px;color:var(--muted);align-items:center}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
.meta-row strong{color:var(--text);font-weight:600}

.cover{margin:28px 0 8px;border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);background:var(--bg-2);box-shadow:var(--sh-1)}
.cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.cover figcaption{font-size:12.5px;color:var(--muted);text-align:center;padding:10px 16px;background:var(--card);border-top:1px solid var(--line)}

.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:48px;align-items:start;margin-top:32px}
.article-grid.no-toc{grid-template-columns:minmax(0,1fr)}

.article-content{max-width:760px;font-size:16.5px;line-height:1.9;color:var(--text)}
.article-content > * + *{margin-top:1.1em}
.article-content h2{
  position:relative;font-size:30px;line-height:1.35;font-weight:700;color:var(--ink);
  margin-top:40px;margin-bottom:16px;padding-left:16px;
}
.article-content h2::before{content:"";position:absolute;left:0;top:.32em;width:3px;height:18px;background:var(--accent);border-radius:2px}
.article-content h3{font-size:20px;line-height:1.5;font-weight:700;margin-top:28px;margin-bottom:12px;color:var(--ink)}
.article-content p{margin-top:0}
.article-content ul,.article-content ol{margin:16px 0;padding-left:22px}
.article-content ul{list-style:none;padding-left:0}
.article-content ul li{position:relative;padding-left:20px;margin-bottom:8px}
.article-content ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--main);
}
.article-content ol{list-style:decimal;color:var(--text)}
.article-content ol li{margin-bottom:8px;padding-left:4px}
.article-content ol li::marker{color:var(--main);font-weight:700}
.article-content blockquote{
  margin:24px 0;padding:16px 20px;background:var(--bg);border-left:3px solid var(--main);
  border-radius:0 var(--r-m) var(--r-m) 0;color:var(--muted);font-size:15.5px;
}
.article-content blockquote p{margin:0}
.article-content strong{color:var(--main-d);font-weight:700}
.article-content a{color:var(--main-d);border-bottom:1px solid rgba(15,122,99,.35)}
.article-content a:hover{color:var(--main);border-bottom-color:var(--main)}
.article-content img{border-radius:var(--r-m);border:1px solid var(--line);margin:20px 0}
.article-content figure{margin:24px 0}
.article-content figcaption{font-size:12.5px;color:var(--muted);text-align:center;margin-top:8px}
.article-content table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
.article-content th,.article-content td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.article-content th{background:var(--bg-2);font-weight:700;color:var(--ink);font-size:14px}
.article-content tr:hover td{background:rgba(237,234,226,.45)}
.article-content hr{border:0;border-top:1px solid var(--line);margin:32px 0}

/* 目录 */
.toc{position:sticky;top:32px;border-left:1px solid var(--line);padding-left:18px}
.toc-title{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--muted);text-transform:uppercase;margin-bottom:12px}
.toc ul{display:flex;flex-direction:column;gap:2px}
.toc a{
  display:block;font-size:13.5px;line-height:1.55;color:var(--muted);padding:6px 10px;
  border-left:2px solid transparent;margin-left:-19px;padding-left:17px;border-radius:0 6px 6px 0;
}
.toc a:hover{color:var(--main-d);background:rgba(15,122,99,.05)}
.toc a.is-current{color:var(--main-d);font-weight:600;border-left-color:var(--accent);background:rgba(15,122,99,.06)}
.toc a.lvl-3{padding-left:30px;font-size:13px}
.toc-toggle{display:none}

/* 标签与分享 */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:40px 0 0;max-width:760px;padding-top:24px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-p);
  background:var(--card);border:1px solid var(--line);font-size:13px;color:var(--muted);
  transition:all .16s ease;
}
.tag:hover{border-color:rgba(15,122,99,.4);color:var(--main-d);background:rgba(15,122,99,.06)}

.share-bar{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  margin-top:24px;max-width:760px;padding:18px 20px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-m);
}
.share-bar .label{font-size:14px;color:var(--muted)}
.share-actions{display:flex;gap:10px;flex-wrap:wrap}
.icon-btn{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 14px;border-radius:var(--r-m);
  border:1px solid var(--line);background:var(--card);font-size:13.5px;color:var(--text);
  transition:all .16s ease;
}
.icon-btn svg{width:16px;height:16px}
.icon-btn:hover{border-color:var(--main);background:rgba(15,122,99,.07);color:var(--main-d);transform:translateY(-1px)}
.icon-btn:active{transform:translateY(0)}

/* 相关推荐 */
.section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin:0 0 22px}
.section-title h2{font-size:30px;line-height:1.35;font-weight:700;color:var(--ink);letter-spacing:.005em}
.section-title .more{font-size:14px;color:var(--main-d);display:inline-flex;align-items:center;gap:6px}
.section-title .more svg{width:14px;height:14px;transition:transform .16s ease}
.section-title .more:hover svg{transform:translateX(3px)}

.related{margin-top:56px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);
  overflow:hidden;box-shadow:var(--sh-1);transition:transform .32s cubic-bezier(.2,.7,.3,1),box-shadow .32s ease,border-color .32s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,122,99,.35)}
.card-media{overflow:hidden;background:var(--bg-2);aspect-ratio:16/10}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s cubic-bezier(.2,.7,.3,1)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;line-height:1.5;font-weight:700;color:var(--ink);transition:color .16s ease}
.card:hover .card-body h3{color:var(--main-d)}
.card-body p{font-size:14px;line-height:1.7;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted);padding-top:6px}

/* 返回入口 */
.back-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:48px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;
  border-radius:var(--r-m);font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:all .16s ease;border:1px solid transparent;
}
.btn-primary{background:var(--accent);color:#14100A;box-shadow:0 6px 16px -10px rgba(240,118,42,.9)}
.btn-primary:hover{background:var(--accent-d);color:#14100A;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--main);background:rgba(15,122,99,.08);color:var(--main-d);transform:translateY(-1px)}
.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none}

/* 空态 */
.empty{
  display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center;
  padding:64px 24px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);
}
.empty svg{width:44px;height:44px;color:var(--main)}
.empty p{color:var(--muted);font-size:15px}

/* 提示条 */
.toast{
  position:fixed;left:50%;bottom:32px;transform:translate(-50%,16px);opacity:0;visibility:hidden;
  background:var(--ink);color:var(--inv);font-size:14px;padding:12px 22px;border-radius:var(--r-p);
  box-shadow:var(--sh-2);transition:all .24s ease;z-index:120;
}
.toast.is-show{opacity:1;visibility:visible;transform:translate(-50%,0)}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink-2);color:var(--inv);margin-top:auto;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:32px;padding-bottom:40px}
.footer .brand{padding:0 0 14px;color:var(--inv)}
.footer-about{font-size:14px;line-height:1.8;color:rgba(244,242,236,.66);max-width:36ch}
.footer h4{font-size:14px;font-weight:700;color:var(--accent);letter-spacing:.04em;margin-bottom:16px}
.footer ul{display:flex;flex-direction:column;gap:10px}
.footer ul a{font-size:14px;color:rgba(244,242,236,.72)}
.footer ul a:hover{color:#fff}
.footer-contact{font-size:14px;line-height:1.9;color:rgba(244,242,236,.66)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.1);padding:18px 0 22px;font-size:12.5px;color:rgba(244,242,236,.55);
}

/* ---------- 响应式 ---------- */
@media (min-width:1024px) and (max-width:1279px){
  :root{--sidebar-w:76px}
  .brand-name,.nav-item span,.side-note,.side-search{display:none}
  .sidebar{padding:20px 0 14px}
  .sidebar .brand{padding:0 0 16px;justify-content:center}
  .nav{padding:0 8px}
  .nav-item{justify-content:center;padding:0;border-left-width:3px}
  .side-tools{padding:10px 0 0;margin-top:10px}
}
@media (max-width:1200px){
  .article-grid{grid-template-columns:minmax(0,1fr)}
  .toc{position:static;border-left:0;padding-left:0;border:1px solid var(--line);border-radius:var(--r-m);background:var(--card);margin-bottom:24px}
  .toc-title{display:none}
  .toc-toggle{
    display:flex;align-items:center;justify-content:space-between;width:100%;
    padding:16px 18px;font-size:15px;font-weight:600;color:var(--ink);
  }
  .toc-toggle svg{width:18px;height:18px;transition:transform .2s ease}
  .toc.is-open .toc-toggle svg{transform:rotate(45deg)}
  .toc ul{padding:0 18px 16px;display:none}
  .toc.is-open ul{display:flex}
  .toc a{margin-left:0;padding-left:12px;border-left:2px solid transparent}
  .toc a.lvl-3{padding-left:24px}
}
@media (max-width:1023px){
  .sidebar{display:none}
  .topbar{display:flex}
  .main-wrap{margin-left:0;padding-top:64px}
  .container{padding:0 28px}
  .page{padding:28px 0 56px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 20px}
  .article-head h1{font-size:30px}
  .article-content h2{font-size:24px}
  .article-content h3{font-size:18px}
  .card-grid{grid-template-columns:1fr;gap:18px}
  .related{margin-top:44px}
  .section-title{flex-direction:column;align-items:flex-start;gap:10px}
  .section-title h2{font-size:24px}
  .share-bar{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer{padding-top:44px}
  .crumbs .cur{max-width:30ch}
}
@media (max-width:560px){
  .btn{width:100%}
  .back-row{flex-direction:column}
  .share-actions{width:100%}
  .icon-btn{flex:1 1 auto;justify-content:center}
  .meta-row{gap:10px;font-size:12px}
  .cover{margin-top:22px}
  .article-content{font-size:16px;line-height:1.85}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;transform:none!important}
}

/* roulang page: category1 */
:root{
  --c-primary:#0F7A63;
  --c-primary-d:#0B5F4D;
  --c-primary-l:#2AC3A6;
  --c-accent:#F0762A;
  --c-accent-d:#C95A15;
  --c-ink:#0F1512;
  --c-ink-2:#1C2622;
  --c-bg:#F7F5F0;
  --c-bg-2:#EDEAE2;
  --c-card:#FFFFFF;
  --c-line:#DED9CE;
  --c-text:#1A211D;
  --c-text-2:#5C665F;
  --c-invert:#F4F2EC;
  --c-error:#C0392B;
  --c-ok:#1B7F4B;
  --ff-base:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,sans-serif;
  --ff-num:"Manrope",Inter,system-ui,"PingFang SC",sans-serif;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,21,18,.06),0 10px 26px -14px rgba(15,21,18,.20);
  --sh-2:0 2px 6px rgba(15,21,18,.08),0 20px 44px -20px rgba(15,21,18,.30);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--ff-base);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(15,122,99,.18)}

/* ---------- 布局骨架 ---------- */
.layout{display:flex;align-items:flex-start;min-height:100vh}
.sidebar{
  width:232px;flex:0 0 232px;
  position:sticky;top:0;height:100vh;
  background:var(--c-ink);color:var(--c-invert);
  display:flex;flex-direction:column;
  padding:22px 0 18px;
  border-right:1px solid rgba(255,255,255,.08);
  z-index:80;
}
.sidebar-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 20px 18px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-invert)}
.brand-mark{width:26px;height:26px;flex:0 0 auto;color:var(--c-accent)}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.drawer-close{display:none;width:40px;height:40px;border-radius:10px;align-items:center;justify-content:center;color:rgba(244,242,236,.75)}
.drawer-close:hover{background:rgba(255,255,255,.08);color:#fff}
.drawer-close svg{width:20px;height:20px}

.nav{display:flex;flex-direction:column;gap:2px;flex:1;overflow-y:auto;overflow-x:hidden;padding:6px 0}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 16px 0 20px;
  font-size:15px;color:rgba(244,242,236,.72);
  transition:background .16s ease,color .16s ease;
}
.nav-item svg{width:18px;height:18px;flex:0 0 auto}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.is-active{background:rgba(255,255,255,.09);color:#fff}
.nav-item.is-active::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:0 3px 3px 0;background:var(--c-accent)}

.sidebar-foot{padding:16px 20px 0;border-top:1px solid rgba(255,255,255,.08);margin-top:8px}
.search{display:flex;align-items:center;gap:8px;height:40px;padding:0 10px;border:1px solid rgba(255,255,255,.16);border-radius:var(--r-sm);background:rgba(255,255,255,.04);transition:border-color .16s ease,background .16s ease}
.search:focus-within{border-color:rgba(42,195,166,.7);background:rgba(255,255,255,.07)}
.search svg{width:16px;height:16px;flex:0 0 auto;color:rgba(244,242,236,.55)}
.search input{flex:1;min-width:0;height:100%;border:0;background:none;outline:none;color:var(--c-invert);font-size:13.5px}
.search input::placeholder{color:rgba(244,242,236,.45)}
.side-note{margin-top:12px;font-size:12.5px;line-height:1.6;color:rgba(244,242,236,.6)}

.mobile-bar{display:none}
.scrim{display:none}

.main{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}

/* ---------- 面包屑 ---------- */
.crumbs{padding-top:26px;font-size:13px;color:var(--c-text-2)}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--c-line)}
.crumbs a{transition:color .16s ease}
.crumbs a:hover{color:var(--c-primary)}
.crumbs .is-current{color:var(--c-text)}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;margin-top:20px;overflow:hidden;
  border-radius:var(--r-lg);background:var(--c-ink-2);color:var(--c-invert);
  min-height:400px;display:flex;align-items:flex-end;
  box-shadow:var(--sh-1);
}
.page-hero .hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,16,14,.88) 0%,rgba(10,16,14,.62) 48%,rgba(10,16,14,.40) 100%)}
.hero-inner{position:relative;z-index:1;padding:48px 44px;max-width:800px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--c-accent)}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-accent);border-radius:2px}
.page-hero h1{
  margin-top:16px;
  font-size:clamp(30px,4vw,46px);line-height:1.25;font-weight:800;letter-spacing:.01em;
}
.page-hero .lede{margin-top:18px;font-size:18px;line-height:1.8;color:rgba(244,242,236,.86);max-width:640px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.badge{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:var(--r-pill);font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:rgba(255,255,255,.10);color:var(--c-invert);border:1px solid rgba(255,255,255,.16);
}
.badge-accent{background:rgba(240,118,42,.16);border-color:rgba(240,118,42,.42);color:#FFD7BC}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 24px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
  transition:background .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn svg{width:16px;height:16px;transition:transform .18s ease}
.btn-primary{background:var(--c-accent);color:#14100A}
.btn-primary:hover{background:var(--c-accent-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;border:1px solid rgba(244,242,236,.5);color:var(--c-invert)}
.btn-ghost:hover{border-color:var(--c-primary-l);background:rgba(42,195,166,.16)}
.btn-outline{background:transparent;border:1px solid var(--c-line);color:var(--c-text)}
.btn-outline:hover{border-color:var(--c-primary);background:rgba(15,122,99,.08);color:var(--c-primary-d)}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-primary-d);transition:color .16s ease}
.link-arrow svg{width:15px;height:15px;transition:transform .18s ease}
.link-arrow:hover{color:var(--c-primary)}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.sec-head h2{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:.01em;margin-top:10px}
.sec-head .sub{margin-top:10px;font-size:15px;color:var(--c-text-2);max-width:640px}
.divider{height:1px;background:var(--c-line);border:0;margin:0}

/* ---------- 参数双栏 ---------- */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:start}
.panel{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);
}
.panel h3{font-size:20px;line-height:1.5;font-weight:700;margin-bottom:6px}
.panel .panel-note{font-size:13.5px;color:var(--c-text-2);margin-bottom:18px}
.spec-table{width:100%;border-collapse:collapse;font-size:15px}
.spec-table th,.spec-table td{text-align:left;padding:13px 0;border-bottom:1px solid var(--c-line);vertical-align:top}
.spec-table th{width:40%;font-weight:500;color:var(--c-text-2);padding-right:16px}
.spec-table td{font-family:var(--ff-num);font-weight:600;color:var(--c-text);letter-spacing:.01em}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:0}
.spec-table .unit{font-family:var(--ff-base);font-weight:400;font-size:13px;color:var(--c-text-2)}
.text-block p{font-size:16px;line-height:1.85;color:var(--c-text);margin-bottom:16px}
.text-block p:last-of-type{margin-bottom:0}
.figure{border-radius:var(--r-lg);overflow:hidden;background:var(--c-bg-2);border:1px solid var(--c-line);margin-top:22px}
.figure img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .32s var(--ease)}
.figure:hover img{transform:scale(1.03)}
.figure figcaption{padding:12px 16px;font-size:12.5px;color:var(--c-text-2);background:var(--c-card);border-top:1px solid var(--c-line)}

/* ---------- 三焦段对比 ---------- */
.compare{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.compare figure{
  margin:0;background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:border-color .24s ease,box-shadow .24s ease,transform .24s var(--ease);
}
.compare figure:hover{border-color:rgba(15,122,99,.3);box-shadow:var(--sh-2);transform:translateY(-4px)}
.compare .shot{position:relative;overflow:hidden;background:var(--c-bg-2)}
.compare .shot img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .32s var(--ease)}
.compare figure:hover .shot img{transform:scale(1.04)}
.compare .focal{
  position:absolute;left:14px;top:14px;display:inline-flex;align-items:center;
  height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(15,21,18,.78);color:#fff;font-size:12.5px;font-weight:600;
  font-family:var(--ff-num);backdrop-filter:none;
}
.compare figcaption{padding:20px 22px 22px}
.compare h3{font-size:18px;line-height:1.5;font-weight:700}
.compare p{margin-top:8px;font-size:14.5px;line-height:1.75;color:var(--c-text-2)}

/* ---------- 编号行式清单 ---------- */
.list-rows{border-top:1px solid var(--c-line)}
.row-item{
  display:grid;grid-template-columns:72px minmax(0,1fr) auto;gap:20px;align-items:start;
  padding:24px 8px;border-bottom:1px solid var(--c-line);
  transition:background .18s ease;
}
.row-item:hover{background:rgba(15,122,99,.045)}
.row-num{font-family:var(--ff-num);font-size:26px;font-weight:800;line-height:1.15;color:var(--c-accent);opacity:.9}
.row-item h3{font-size:18px;line-height:1.5;font-weight:700}
.row-item p{margin-top:6px;font-size:15px;line-height:1.8;color:var(--c-text-2)}
.row-item .row-link{display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-size:13.5px;font-weight:600;color:var(--c-primary-d)}
.row-item .row-link svg{width:14px;height:14px;transition:transform .18s ease}
.row-item:hover .row-link svg{transform:translateX(3px)}
.row-tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12.5px;font-weight:600;
  background:rgba(15,122,99,.10);color:var(--c-primary-d);white-space:nowrap;
}

/* ---------- 深色记录条件 ---------- */
.dark-block{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--c-ink-2);color:var(--c-invert);padding:48px;
}
.dark-block::after{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;
  border:1px solid rgba(240,118,42,.22);transform:rotate(24deg);border-radius:24px;pointer-events:none;
}
.dark-block h2{font-size:28px;line-height:1.35;font-weight:700}
.dark-block .dsub{margin-top:12px;font-size:15.5px;line-height:1.85;color:rgba(244,242,236,.72);max-width:680px}
.dark-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:36px;position:relative;z-index:1}
.dark-cell{padding:22px 24px;border:1px solid rgba(255,255,255,.12);border-radius:var(--r-md);background:rgba(255,255,255,.04)}
.dark-cell .k{font-size:12.5px;letter-spacing:.08em;color:var(--c-accent)}
.dark-cell .v{margin-top:10px;font-family:var(--ff-num);font-size:30px;font-weight:800;line-height:1.2;color:#fff}
.dark-cell .v small{font-family:var(--ff-base);font-size:14px;font-weight:500;color:rgba(244,242,236,.66);margin-left:4px}
.dark-cell .d{margin-top:10px;font-size:13.5px;line-height:1.7;color:rgba(244,242,236,.68)}

/* ---------- FAQ ---------- */
.faq{border:1px solid var(--c-line);border-radius:var(--r-lg);background:var(--c-card);overflow:hidden;box-shadow:var(--sh-1)}
.faq-item+.faq-item{border-top:1px solid var(--c-line)}
.faq-q{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:20px;
  width:100%;min-height:56px;padding:14px 24px;text-align:left;
  font-size:17px;font-weight:500;line-height:1.6;color:var(--c-text);
  transition:background .16s ease,color .16s ease;
}
.faq-q:hover{background:var(--c-bg)}
.faq-q .plus{width:20px;height:20px;flex:0 0 auto;color:var(--c-primary);transition:transform .2s ease}
.faq-item.is-open .faq-q{color:var(--c-primary-d)}
.faq-item.is-open .plus{transform:rotate(45deg)}
.faq-item.is-open .faq-q::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;background:var(--c-accent);border-radius:0 3px 3px 0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a p{padding:0 24px 22px;font-size:15.5px;line-height:1.85;color:var(--c-text-2)}

/* ---------- CTA ---------- */
.cta-block{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  background:var(--c-ink);color:var(--c-invert);border-radius:var(--r-lg);padding:48px;
}
.cta-block h2{font-size:28px;line-height:1.35;font-weight:700}
.cta-block p{margin-top:12px;font-size:15.5px;line-height:1.85;color:rgba(244,242,236,.72);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.cta-links a{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.2);
  font-size:13.5px;color:rgba(244,242,236,.82);
  transition:border-color .16s ease,background .16s ease,color .16s ease;
}
.cta-links a:hover{border-color:var(--c-accent);background:rgba(240,118,42,.14);color:#fff}

/* ---------- 页脚 ---------- */
.footer{background:var(--c-ink-2);color:var(--c-invert);margin-top:96px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.footer h4{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--c-accent);margin-bottom:14px}
.footer ul{display:flex;flex-direction:column;gap:10px}
.footer ul a{font-size:14px;color:rgba(244,242,236,.72);transition:color .16s ease}
.footer ul a:hover{color:#fff}
.footer-about,.footer-contact{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(244,242,236,.7)}
.footer .brand{color:var(--c-invert)}
.footer .brand-mark{color:var(--c-accent)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding:20px 0 26px;border-top:1px solid rgba(255,255,255,.1);
  font-size:12.5px;color:rgba(244,242,236,.6);
}

/* ---------- 断点 ---------- */
@media (max-width:1439px){
  .sidebar{width:216px;flex-basis:216px}
}
@media (max-width:1279px){
  .sidebar{width:76px;flex-basis:76px}
  .sidebar-head{padding:0 0 18px;justify-content:center}
  .brand-name{display:none}
  .nav-item{justify-content:center;padding:0}
  .nav-item span{display:none}
  .sidebar-foot{padding:16px 10px 0}
  .search{justify-content:center;padding:0}
  .search input,.side-note{display:none}
  .dark-block{padding:40px}
}
@media (max-width:1023px){
  .layout{display:block}
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;
    height:64px;padding:0 20px;position:sticky;top:0;z-index:70;
    background:var(--c-ink);color:var(--c-invert);
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .mobile-bar .brand-name{display:inline;font-size:17px}
  .burger{display:flex;align-items:center;justify-content:center;width:44px;height:44px;margin-right:-10px;border-radius:10px;color:var(--c-invert);transition:background .16s ease}
  .burger:hover{background:rgba(255,255,255,.08)}
  .burger svg{width:22px;height:22px}
  .sidebar{
    position:fixed;top:0;right:0;left:auto;height:100vh;width:84%;max-width:340px;
    flex:none;transform:translateX(103%);
    transition:transform .3s var(--ease);
    overflow-y:auto;padding:22px 0 18px;border-right:0;
  }
  .sidebar.is-open{transform:translateX(0);box-shadow:-24px 0 64px -30px rgba(0,0,0,.7)}
  .sidebar-head{padding:0 20px 18px;justify-content:space-between}
  .brand-name{display:inline}
  .nav-item{justify-content:flex-start;padding:0 16px 0 20px}
  .nav-item span{display:inline}
  .sidebar-foot{padding:16px 20px 0}
  .search{justify-content:flex-start;padding:0 10px}
  .search input,.side-note{display:block}
  .drawer-close{display:flex}
  .scrim{
    display:block;position:fixed;inset:0;background:rgba(15,21,18,.55);
    opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;z-index:85;
  }
  .scrim.is-open{opacity:1;visibility:visible}
  body.is-locked{overflow:hidden}
  .container{padding:0 28px}
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .split{grid-template-columns:minmax(0,1fr)}
  .dark-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-block{padding:36px}
  .dark-block{padding:32px}
  .page-hero .hero-inner{padding:36px 28px}
}
@media (max-width:768px){
  .page-hero{min-height:360px}
  .page-hero .lede{font-size:16.5px}
  .compare{grid-template-columns:minmax(0,1fr)}
  .dark-grid{grid-template-columns:minmax(0,1fr)}
  .row-item{grid-template-columns:52px minmax(0,1fr);gap:16px;padding:20px 4px}
  .row-item .row-tag{display:none}
  .row-num{font-size:22px}
  .sec-head h2{font-size:25px}
  .dark-block h2,.cta-block h2{font-size:23px}
  .section{padding:56px 0}
  .section-tight{padding:44px 0}
}
@media (max-width:560px){
  .container{padding:0 20px}
  .page-hero{min-height:380px;border-radius:var(--r-md)}
  .page-hero .hero-inner{padding:28px 22px}
  .page-hero h1{font-size:30px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .panel{padding:20px}
  .spec-table{font-size:14px}
  .spec-table th{width:44%}
  .footer{padding-top:48px;margin-top:64px}
  .footer-grid{grid-template-columns:1fr}
  .cta-block{padding:28px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .movie-bar h1{font-size:26px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .btn:hover,.compare figure:hover,.figure:hover img,.compare figure:hover .shot img{transform:none !important}
}

/* roulang page: category2 */
:root{
  --brand:#0F7A63;
  --brand-d:#0B5F4D;
  --brand-l:#2AC3A6;
  --accent:#F0762A;
  --accent-d:#C95A15;
  --ink:#0F1512;
  --ink-2:#1C2622;
  --paper:#F7F5F0;
  --paper-2:#EDEAE2;
  --card:#FFFFFF;
  --line:#DED9CE;
  --text:#1A211D;
  --muted:#5C665F;
  --white:#F4F2EC;
  --err:#C0392B;
  --ok:#1B7F4B;
  --ff-base:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  --ff-num:Manrope,Inter,system-ui,sans-serif;
  --r-s:8px;
  --r-m:14px;
  --r-l:20px;
  --r-p:999px;
  --sh-1:0 1px 2px rgba(15,21,18,.06),0 10px 26px -14px rgba(15,21,18,.20);
  --sh-2:0 2px 4px rgba(15,21,18,.08),0 18px 38px -18px rgba(15,21,18,.30);
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--ff-base);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,dl,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

/* 布局骨架 */
.shell{display:flex;min-height:100vh;align-items:flex-start}
.main-wrap{flex:1;min-width:0;display:flex;flex-direction:column}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}

/* 侧栏导航 */
.sider{
  width:232px;flex:0 0 232px;height:100vh;
  position:sticky;top:0;
  background:var(--ink);color:var(--white);
  border-right:1px solid rgba(255,255,255,.08);
  display:flex;flex-direction:column;
  z-index:80;
  transition:transform .28s cubic-bezier(.2,.7,.3,1);
}
.sider-head{padding:22px 20px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand{display:flex;align-items:center;gap:10px;color:var(--white)}
.brand-mark{width:26px;height:26px;color:var(--accent);flex:0 0 auto}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.nav{padding:14px 10px;display:flex;flex-direction:column;gap:2px;flex:1;overflow-y:auto}
.nav-item{
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:10px;
  color:rgba(244,242,236,.78);font-size:15px;
  position:relative;white-space:nowrap;
  transition:background .18s ease,color .18s ease;
}
.nav-item svg{width:18px;height:18px;flex:0 0 auto}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.is-active{background:rgba(255,255,255,.09);color:#fff}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;
  width:3px;border-radius:2px;background:var(--accent);
}
.sider-foot{padding:16px;border-top:1px solid rgba(255,255,255,.08)}
.search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 10px;
  border:1px solid rgba(255,255,255,.16);border-radius:10px;
  transition:border-color .18s ease;
}
.search:focus-within{border-color:var(--brand-l)}
.search svg{width:16px;height:16px;color:rgba(244,242,236,.55);flex:0 0 auto}
.search input{
  width:100%;height:100%;border:0;outline:none;background:transparent;
  color:var(--white);font-size:14px;font-family:inherit;
}
.search input::placeholder{color:rgba(244,242,236,.42)}
.sider-note{margin-top:10px;font-size:12.5px;line-height:1.6;color:rgba(244,242,236,.6)}

/* 移动端顶栏与遮罩 */
.topbar{display:none}
.mask{
  position:fixed;inset:0;background:rgba(15,21,18,.55);
  opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:75;
}
.mask.is-open{opacity:1;pointer-events:auto}
body.no-scroll{overflow:hidden}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-m);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .16s ease,background .16s ease,border-color .16s ease,box-shadow .16s ease,color .16s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#14100A;box-shadow:0 12px 26px -18px rgba(240,118,42,.95)}
.btn-primary:hover{background:var(--accent-d);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-outline{border-color:rgba(255,255,255,.45);color:var(--white);background:transparent}
.btn-outline:hover{border-color:var(--brand-l);background:rgba(42,195,166,.14)}
.btn-line{background:var(--card);border-color:var(--line);color:var(--text)}
.btn-line:hover{border-color:var(--brand);color:var(--brand-d);background:rgba(15,122,99,.06);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}

/* 首屏 */
.cat-hero{position:relative;overflow:hidden;background:var(--ink);color:var(--white);padding:52px 0 60px}
.hero-bg{position:absolute;inset:0;background:url(/assets/images/backpic/back-2.png) center/cover no-repeat}
.hero-veil{position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,16,14,.92),rgba(10,16,14,.46))}
.hero-inner{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(244,242,236,.7);margin-bottom:22px;flex-wrap:wrap}
.crumb a{color:rgba(244,242,236,.86)}
.crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.crumb-sep{color:rgba(244,242,236,.4)}
.crumb [aria-current]{color:var(--brand-l)}
.hero-title{
  font-size:clamp(30px,4vw,46px);line-height:1.25;font-weight:800;
  letter-spacing:-.01em;max-width:19em;margin:0 0 18px;
}
.hero-sub{font-size:18px;line-height:1.8;color:rgba(244,242,236,.86);max-width:36em;margin:0 0 24px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;
  border-radius:var(--r-p);font-size:12.5px;letter-spacing:.02em;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  color:var(--white);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}

/* 通用板块 */
.section{margin-top:var(--sec)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.sec-title{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:-.01em}
.sec-lead{font-size:16px;line-height:1.85;color:var(--muted);margin-top:10px;max-width:46em}
.sec-link{font-size:14px;font-weight:600;color:var(--brand-d);display:inline-flex;align-items:center;gap:6px;transition:gap .18s ease}
.sec-link:hover{gap:10px;color:var(--brand)}

/* 要点清单 */
.points-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.point-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .28s cubic-bezier(.2,.7,.3,1),box-shadow .28s ease,border-color .28s ease;
}
.point-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,122,99,.32)}
.point-num{font-family:var(--ff-num);font-size:28px;line-height:1.1;font-weight:800;color:var(--brand);letter-spacing:-.02em}
.point-num small{font-size:13px;font-weight:600;color:var(--muted);margin-left:4px;letter-spacing:0}
.point-title{font-size:17px;font-weight:700;margin-top:10px}
.point-text{font-size:14.5px;line-height:1.8;color:var(--muted);margin-top:8px}

/* 正文两栏 */
.body-grid{display:grid;grid-template-columns:210px 1fr;gap:48px;align-items:start}
.toc{
  position:sticky;top:24px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);
  padding:20px 18px;box-shadow:var(--sh-1);
}
.toc-title{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--muted);margin-bottom:12px}
.toc-list{display:flex;flex-direction:column;gap:4px}
.toc-link{
  display:block;font-size:14px;line-height:1.6;padding:8px 10px;
  border-left:2px solid transparent;color:var(--muted);border-radius:0 6px 6px 0;
  transition:color .18s ease,background .18s ease,border-color .18s ease;
}
.toc-link:hover{color:var(--brand-d);background:rgba(15,122,99,.06);border-left-color:rgba(15,122,99,.4)}
.toc-link.is-current{color:var(--brand-d);border-left-color:var(--brand);background:rgba(15,122,99,.08);font-weight:600}
.toc-note{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;line-height:1.7;color:var(--muted)}

.block{margin-bottom:56px;scroll-margin-top:24px}
.block:last-child{margin-bottom:0}
.block h2{
  position:relative;font-size:26px;line-height:1.4;font-weight:700;
  padding-left:16px;margin-bottom:16px;
}
.block h2::before{
  content:"";position:absolute;left:0;top:6px;width:3px;height:20px;
  border-radius:2px;background:var(--accent);
}
.block p{color:var(--text);margin-bottom:14px;max-width:44em}
.block p.muted{color:var(--muted);font-size:15.5px}
.block h3{font-size:19px;font-weight:700;margin:26px 0 10px}
.note-line{
  display:flex;gap:10px;align-items:flex-start;
  border-left:3px solid var(--brand);background:rgba(15,122,99,.06);
  border-radius:0 var(--r-s) var(--r-s) 0;
  padding:14px 18px;font-size:15px;line-height:1.8;color:var(--brand-d);
  margin:18px 0;
}
.note-line svg{width:18px;height:18px;flex:0 0 auto;margin-top:4px}

/* 大号数字引导 */
.big-figure{display:flex;align-items:flex-end;gap:16px;margin:6px 0 18px;flex-wrap:wrap}
.big-num{font-family:var(--ff-num);font-size:56px;line-height:.95;font-weight:800;color:var(--brand);letter-spacing:-.03em}
.big-num span{font-size:20px;font-weight:700;margin-left:2px}
.big-label{font-size:14px;line-height:1.6;color:var(--muted);padding-bottom:6px}

/* 充电刻度 */
.charge-line{
  position:relative;display:grid;grid-template-columns:repeat(5,1fr);
  margin:44px 0 8px;padding:0;
}
.charge-line::before{
  content:"";position:absolute;left:8%;right:8%;top:7px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));opacity:.45;
}
.cl-item{position:relative;text-align:center;padding-top:28px}
.cl-dot{
  position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:16px;height:16px;border-radius:50%;
  background:var(--card);border:2px solid var(--brand);
}
.cl-item:last-child .cl-dot{border-color:var(--accent);background:var(--accent);box-shadow:0 0 0 4px rgba(240,118,42,.16)}
.cl-num{font-family:var(--ff-num);font-size:20px;font-weight:800;color:var(--text);line-height:1.2}
.cl-txt{font-size:13px;color:var(--muted);line-height:1.6;margin-top:2px}

/* 图文 */
.figure{margin:24px 0 0}
.figure img{width:100%;border-radius:var(--r-l);border:1px solid var(--line);object-fit:cover;aspect-ratio:16/9}
.figcaption{font-size:12.5px;line-height:1.7;color:var(--muted);text-align:center;margin-top:10px}

/* 条目清单 */
.entry-list{border-top:1px solid var(--line);margin-top:8px}
.entry{
  display:grid;grid-template-columns:56px 1fr;gap:20px;
  padding:22px 14px;border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.entry:hover{background:var(--card)}
.entry-no{font-family:var(--ff-num);font-size:20px;font-weight:800;color:var(--brand);line-height:1.5}
.entry-title{font-size:17.5px;font-weight:700;line-height:1.6}
.entry-text{font-size:15px;line-height:1.8;color:var(--muted);margin-top:6px;max-width:44em}
.entry-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:10px;
  font-size:14px;font-weight:600;color:var(--brand-d);
  transition:gap .18s ease,color .18s ease;
}
.entry-link:hover{gap:10px;color:var(--accent-d)}

/* FAQ */
.faq{display:grid;gap:12px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(15,122,99,.34);box-shadow:var(--sh-1)}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 22px;font-size:17px;font-weight:500;cursor:pointer;
  transition:background .18s ease,box-shadow .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:rgba(15,122,99,.04)}
.faq-item[open] summary{box-shadow:inset 3px 0 0 var(--accent);color:var(--brand-d)}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 auto;transition:transform .2s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-icon::before{left:9px;top:2px;width:2px;height:16px}
.faq-icon::after{top:9px;left:2px;height:2px;width:16px}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-a{padding:0 24px 20px;font-size:15.5px;line-height:1.85;color:var(--muted)}

/* CTA */
.cta-block{
  position:relative;overflow:hidden;
  background:var(--ink);color:var(--white);
  border-radius:var(--r-l);padding:44px;
  display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
}
.cta-block::after{
  content:"";position:absolute;right:-60px;top:-70px;
  width:260px;height:260px;border-radius:28px;
  border:1px solid rgba(240,118,42,.28);
  transform:rotate(24deg);
  background:linear-gradient(140deg,rgba(240,118,42,.10),transparent 70%);
  pointer-events:none;
}
.cta-title{font-size:26px;line-height:1.4;font-weight:700;position:relative;z-index:2}
.cta-text{font-size:15.5px;line-height:1.85;color:rgba(244,242,236,.78);margin-top:10px;max-width:38em;position:relative;z-index:2}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:2}

/* 页脚 */
.footer{margin-top:var(--sec);background:var(--ink-2);color:rgba(244,242,236,.78);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.footer .brand{color:var(--white);margin-bottom:14px}
.footer .brand-mark{color:var(--accent)}
.footer h4{font-size:14px;font-weight:700;letter-spacing:.04em;color:var(--accent);margin-bottom:14px}
.footer-about{font-size:14px;line-height:1.85;color:rgba(244,242,236,.66);max-width:26em}
.footer ul{display:grid;gap:10px}
.footer ul a{font-size:14px;color:rgba(244,242,236,.72);transition:color .18s ease}
.footer ul a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-contact{font-size:14px;line-height:1.9;color:rgba(244,242,236,.66)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:40px;padding:20px 0;border-top:1px solid rgba(255,255,255,.1);
  font-size:12.5px;line-height:1.7;color:rgba(244,242,236,.55);
}

/* 响应式 */
@media (max-width:1439px){
  .sider{width:216px;flex-basis:216px}
}
@media (max-width:1279px) and (min-width:1024px){
  .sider{width:76px;flex-basis:76px}
  .sider-head{padding:20px 0;display:flex;justify-content:center}
  .brand-name{display:none}
  .nav{padding:14px 10px;align-items:center}
  .nav-item{justify-content:center;padding:0;width:44px}
  .nav-item span{display:none}
  .sider-foot{display:none}
}
@media (max-width:1023px){
  :root{--sec:72px}
  .shell{display:block}
  .sider{
    position:fixed;top:0;right:0;height:100vh;
    width:84%;max-width:340px;flex-basis:auto;
    transform:translateX(104%);
    box-shadow:-24px 0 60px rgba(0,0,0,.35);
  }
  .sider.is-open{transform:translateX(0)}
  .brand-name{display:inline}
  .nav-item span{display:inline}
  .sider-foot{display:block}
  .sider-head{display:block;padding:22px 20px}
  .nav{align-items:stretch}
  .nav-item{justify-content:flex-start;padding:0 14px;width:auto}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    height:64px;padding:0 20px;background:var(--ink);color:var(--white);
    position:sticky;top:0;z-index:70;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .topbar .brand{color:var(--white)}
  .nav-toggle{
    width:44px;height:44px;display:grid;place-items:center;
    background:transparent;border:1px solid rgba(255,255,255,.18);border-radius:12px;
    color:var(--white);transition:background .18s ease,border-color .18s ease;
  }
  .nav-toggle:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.32)}
  .nav-toggle svg{width:20px;height:20px}
  .container{padding:0 28px}
  .points-grid{grid-template-columns:repeat(2,1fr)}
  .body-grid{grid-template-columns:1fr;gap:32px}
  .toc{position:static}
  .toc-list{flex-direction:row;flex-wrap:wrap;gap:8px}
  .toc-link{border-left:0;border:1px solid var(--line);border-radius:var(--r-p);padding:6px 14px;font-size:13.5px}
  .toc-link.is-current{border-color:rgba(15,122,99,.4);background:rgba(15,122,99,.08)}
  .toc-note{display:none}
  .cta-block{grid-template-columns:1fr;padding:34px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
}
@media (max-width:768px){
  :root{--sec:56px}
  .container{padding:0 20px}
  .cat-hero{padding:40px 0 46px}
  .hero-sub{font-size:16px}
  .points-grid{grid-template-columns:1fr}
  .big-num{font-size:44px}
  .block h2{font-size:22px}
  .sec-title{font-size:24px}
  .entry{grid-template-columns:40px 1fr;gap:14px;padding:18px 8px}
  .entry-no{font-size:17px}
  .cta-block{padding:26px}
  .cta-title{font-size:22px}
  .footer{padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:560px){
  .hero-title{font-size:30px}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .charge-line{grid-template-columns:repeat(5,minmax(62px,1fr));overflow-x:auto;padding-bottom:8px}
  .cl-num{font-size:17px}
  .cl-txt{font-size:11.5px}
  .faq-item summary{font-size:15.5px;padding:14px 16px}
  .faq-a{padding:0 18px 18px;font-size:15px}
  .sec-head{margin-bottom:22px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
  .point-card:hover,.btn:hover{transform:none !important}
}

/* roulang page: category3 */
:root{
  --c-brand:#0F7A63;
  --c-brand-dark:#0B5F4D;
  --c-brand-light:#2AC3A6;
  --c-accent:#F0762A;
  --c-accent-dark:#C95A15;
  --c-ink:#0F1512;
  --c-ink-2:#1C2622;
  --c-bg:#F7F5F0;
  --c-surface:#EDEAE2;
  --c-card:#FFFFFF;
  --c-line:#DED9CE;
  --c-text:#1A211D;
  --c-muted:#5C665F;
  --c-invert:#F4F2EC;
  --c-error:#C0392B;
  --c-success:#1B7F4B;
  --ff-base:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,sans-serif;
  --ff-num:"Manrope","Inter",system-ui,-apple-system,"PingFang SC",sans-serif;
  --sh-1:0 1px 2px rgba(15,21,18,.06),0 10px 26px -14px rgba(15,21,18,.20);
  --sh-2:0 4px 10px rgba(15,21,18,.08),0 18px 38px -18px rgba(15,21,18,.30);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --container:1240px;
  --sp:8px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--ff-base);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
input{font:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--c-brand);
  outline-offset:2px;
  border-radius:6px;
}
.sidebar a:focus-visible,.topbar a:focus-visible,.topbar button:focus-visible,.sidebar button:focus-visible{
  outline:2px solid var(--c-accent);
  outline-offset:2px;
}
::selection{background:rgba(15,122,99,.18)}

/* ---------- 布局骨架 ---------- */
.app{display:flex;align-items:flex-start;min-height:100vh}
.content{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--c-bg)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px}

/* ---------- 左侧竖向导航 ---------- */
.sidebar{
  position:sticky;
  top:0;
  width:232px;
  flex:none;
  height:100vh;
  background:var(--c-ink);
  color:var(--c-invert);
  display:flex;
  flex-direction:column;
  border-right:1px solid rgba(255,255,255,.08);
  z-index:40;
}
.sidebar-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  padding:22px 20px 18px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-invert)}
.brand-mark{width:26px;height:26px;flex:none;color:var(--c-accent)}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.nav{display:flex;flex-direction:column;padding:14px 0;gap:2px;flex:1 1 auto;overflow-y:auto}
.nav-item{
  display:flex;
  align-items:center;
  gap:12px;
  height:44px;
  padding:0 20px;
  font-size:15px;
  color:rgba(244,242,236,.76);
  border-left:3px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.nav-item svg{width:18px;height:18px;flex:none}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.is-active{
  background:rgba(255,255,255,.09);
  border-left-color:var(--c-accent);
  color:#fff;
  font-weight:600;
}
.sidebar-tools{padding:16px 20px 22px;border-top:1px solid rgba(255,255,255,.08)}
.search{display:flex}
.search input{
  width:100%;
  height:40px;
  padding:0 12px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.05);
  color:var(--c-invert);
  font-size:13.5px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search input::placeholder{color:rgba(244,242,236,.42)}
.search input:focus{
  outline:none;
  border-color:var(--c-accent);
  box-shadow:0 0 0 3px rgba(240,118,42,.18);
}
.tools-note{margin-top:10px;font-size:12.5px;line-height:1.6;color:rgba(244,242,236,.55)}

/* ---------- 移动端顶栏 ---------- */
.topbar{display:none}
.overlay{display:none}
.burger{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-sm);
  color:var(--c-invert);
  transition:background .18s ease;
}
.burger:hover{background:rgba(255,255,255,.08)}
.burger svg{width:22px;height:22px}
.drawer-close{display:none}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  background:var(--c-ink);
  color:var(--c-invert);
}
.hero-media{position:absolute;inset:0;z-index:-2}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(10,16,14,.90) 0%,rgba(10,16,14,.72) 46%,rgba(10,16,14,.30) 100%);
}
.hero-inner{
  position:relative;
  padding-top:52px;
  padding-bottom:64px;
  max-width:calc(var(--container));
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;
  color:rgba(244,242,236,.66);
  margin-bottom:22px;
}
.breadcrumb a{color:rgba(244,242,236,.82);transition:color .18s ease}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.breadcrumb span[aria-current]{color:var(--c-invert)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;
  color:var(--c-accent);
  font-weight:700;
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--c-accent);border-radius:2px}
.hero h1{
  font-size:clamp(30px,4vw,46px);
  line-height:1.25;
  font-weight:800;
  letter-spacing:-.01em;
  max-width:19em;
  margin-bottom:18px;
}
.hero-lead{
  font-size:18px;
  line-height:1.8;
  color:rgba(244,242,236,.86);
  max-width:36em;
  margin-bottom:16px;
}
.hero-lead + .hero-lead{margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.hero-badges li{
  padding:6px 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(244,242,236,.24);
  background:rgba(244,242,236,.06);
  font-size:12.5px;
  letter-spacing:.02em;
  color:rgba(244,242,236,.88);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border-radius:var(--r-md);
  font-size:15px;font-weight:600;
  letter-spacing:.02em;
  transition:background .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;
  white-space:nowrap;
}
.btn svg{width:17px;height:17px;flex:none}
.btn-primary{background:var(--c-accent);color:#14100A;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-accent-dark);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost-light{border:1px solid rgba(244,242,236,.46);color:var(--c-invert);background:transparent}
.btn-ghost-light:hover{border-color:var(--c-brand-light);background:rgba(42,195,166,.12);transform:translateY(-1px)}
.btn-outline{border:1px solid var(--c-line);color:var(--c-text);background:var(--c-card)}
.btn-outline:hover{border-color:var(--c-brand);background:rgba(15,122,99,.08);transform:translateY(-1px)}
.btn-solid{background:var(--c-brand);color:#fff}
.btn-solid:hover{background:var(--c-brand-dark);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:600;color:var(--c-brand-dark);
  padding:4px 0;
}
.btn-link svg{width:16px;height:16px;transition:transform .18s ease}
.btn-link:hover{color:var(--c-brand)}
.btn-link:hover svg{transform:translateX(3px)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--c-surface)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head .eyebrow{color:var(--c-brand);margin-bottom:10px}
.section-head .eyebrow::before{background:var(--c-brand)}
.section-title{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:-.01em}
.section-desc{margin-top:12px;font-size:16px;line-height:1.8;color:var(--c-muted);max-width:44em}
.rule{height:1px;background:var(--c-line);border:0;margin:0}

/* ---------- 参数快览 ---------- */
.fact-list{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1)}
.fact-row{
  display:grid;
  grid-template-columns:180px 132px 1fr;
  gap:24px;
  align-items:baseline;
  padding:22px 28px;
  border-bottom:1px solid var(--c-line);
  transition:background .18s ease;
}
.fact-row:last-child{border-bottom:0}
.fact-row:hover{background:#FBFAF6}
.fact-name{font-size:16px;font-weight:700;color:var(--c-ink)}
.fact-value{
  font-family:var(--ff-num);
  font-size:22px;font-weight:800;
  color:var(--c-brand);
  letter-spacing:-.02em;
}
.fact-note{font-size:14.5px;line-height:1.8;color:var(--c-muted)}

/* ---------- 分段图文（整宽图 + 悬浮文字条） ---------- */
.chapter{position:relative;padding-bottom:0}
.chapter + .chapter{margin-top:88px}
.chapter-figure{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:var(--c-surface);
  box-shadow:var(--sh-1);
}
.chapter-figure img{width:100%;aspect-ratio:21/9;object-fit:cover;transition:transform .32s cubic-bezier(.2,.7,.3,1)}
.chapter-figure:hover img{transform:scale(1.02)}
.chapter-figure figcaption{
  position:absolute;left:16px;bottom:16px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:rgba(15,21,18,.72);
  color:rgba(244,242,236,.92);
  font-size:12.5px;
  letter-spacing:.02em;
  backdrop-filter:blur(2px);
}
.chapter-body{
  position:relative;
  margin:-46px auto 0;
  width:calc(100% - 96px);
  max-width:880px;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  padding:30px 36px 32px;
}
.chapter-index{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--ff-num);
  font-size:12.5px;font-weight:800;letter-spacing:.14em;
  color:var(--c-accent-dark);
  margin-bottom:10px;
}
.chapter-index::before{content:"";width:18px;height:1px;background:var(--c-accent)}
.chapter-body h3{font-size:22px;line-height:1.5;font-weight:700;margin-bottom:12px}
.chapter-body p{font-size:16px;line-height:1.85;color:#2C342F}
.chapter-body p + p{margin-top:12px}
.chapter-em{color:var(--c-brand-dark);font-weight:700}

/* ---------- 对照表（细线，无竖框） ---------- */
.table-wrap{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1)}
table.compare{width:100%;border-collapse:collapse;font-size:15px}
table.compare caption{
  text-align:left;
  padding:20px 24px 16px;
  font-size:13px;
  color:var(--c-muted);
  letter-spacing:.02em;
  border-bottom:1px solid var(--c-line);
}
table.compare th,table.compare td{
  padding:16px 24px;
  text-align:left;
  border-bottom:1px solid var(--c-line);
  vertical-align:top;
}
table.compare thead th{
  font-size:13px;
  font-weight:700;
  color:var(--c-muted);
  letter-spacing:.04em;
  background:#FBFAF6;
}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare tbody tr{transition:background .18s ease}
table.compare tbody tr:hover{background:#FBFAF6}
table.compare td.num{font-family:var(--ff-num);font-weight:800;color:var(--c-brand);font-size:16px;white-space:nowrap}
table.compare td.model{font-weight:700;color:var(--c-ink)}

/* ---------- 条目清单（左编号右内容） ---------- */
.item-list{display:flex;flex-direction:column;border-top:1px solid var(--c-line)}
.item{
  display:grid;
  grid-template-columns:88px 1fr auto;
  gap:28px;
  align-items:start;
  padding:28px 8px;
  border-bottom:1px solid var(--c-line);
  transition:background .18s ease,padding-left .18s ease;
}
.item:hover{background:rgba(255,255,255,.72);padding-left:16px}
.item-no{
  font-family:var(--ff-num);
  font-size:34px;font-weight:800;line-height:1;
  color:var(--c-brand);
  letter-spacing:-.03em;
}
.item-body h3{font-size:19px;line-height:1.55;font-weight:700;margin-bottom:8px}
.item-body p{font-size:15px;line-height:1.85;color:var(--c-muted);max-width:56em}
.item-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-brand-dark);
  padding-top:6px;white-space:nowrap;
}
.item-link svg{width:15px;height:15px;transition:transform .18s ease}
.item-link:hover{color:var(--c-brand)}
.item-link:hover svg{transform:translateX(3px)}

/* ---------- 场景三栏（非等宽，图文错落） ---------- */
.scene-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:stretch}
.scene-main{
  position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--c-ink);min-height:340px;
  box-shadow:var(--sh-1);
}
.scene-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.72}
.scene-main-inner{position:relative;padding:36px;display:flex;flex-direction:column;justify-content:flex-end;height:100%;color:var(--c-invert)}
.scene-main-inner h3{font-size:24px;line-height:1.45;font-weight:700;margin-bottom:10px}
.scene-main-inner p{font-size:15px;line-height:1.85;color:rgba(244,242,236,.82);max-width:32em}
.scene-side{display:flex;flex-direction:column;gap:20px}
.scene-card{
  flex:1;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:24px 26px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,122,99,.3)}
.scene-card h4{font-size:17px;font-weight:700;margin-bottom:8px}
.scene-card p{font-size:14.5px;line-height:1.8;color:var(--c-muted)}

/* ---------- 标签/徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  line-height:1.6;
  letter-spacing:.02em;
  white-space:nowrap;
}
.badge-brand{background:rgba(15,122,99,.10);color:var(--c-brand-dark);font-weight:600}
.badge-accent{background:rgba(240,118,42,.12);color:var(--c-accent-dark);font-weight:600}

/* ---------- FAQ ---------- */
.faq{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;
  padding:16px 24px;
  text-align:left;
  font-size:17px;font-weight:500;
  color:var(--c-ink);
  border-left:3px solid transparent;
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.faq-q:hover{background:#FBFAF6}
.faq-item.is-open .faq-q{
  border-left-color:var(--c-accent);
  color:var(--c-brand-dark);
  font-weight:700;
}
.faq-q .plus{
  width:20px;height:20px;flex:none;color:var(--c-muted);
  transition:transform .2s ease,color .2s ease;
}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg);color:var(--c-accent)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .22s ease}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a p{
  padding:0 24px 20px 24px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--c-muted);
  border-left:3px solid var(--c-accent);
  margin-left:0;
}

/* ---------- 相关分类 ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.topic-card{
  display:flex;flex-direction:column;gap:10px;
  padding:24px 22px;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease,color .2s ease;
}
.topic-card .topic-no{
  font-family:var(--ff-num);
  font-size:26px;font-weight:800;letter-spacing:-.03em;
  color:var(--c-brand);
  transition:color .2s ease;
}
.topic-card h3{font-size:17px;font-weight:700;line-height:1.5}
.topic-card p{font-size:13.5px;line-height:1.75;color:var(--c-muted);transition:color .2s ease}
.topic-card .topic-arrow{margin-top:auto;width:16px;height:16px;color:var(--c-brand);transition:transform .2s ease,color .2s ease}
.topic-card:hover{
  transform:translateY(-4px);
  background:var(--c-ink);
  border-color:var(--c-ink);
  color:var(--c-invert);
  box-shadow:var(--sh-2);
}
.topic-card:hover .topic-no{color:var(--c-accent)}
.topic-card:hover p{color:rgba(244,242,236,.72)}
.topic-card:hover .topic-arrow{transform:translateX(3px);color:var(--c-accent)}
.topic-card.is-current{
  border-color:var(--c-brand);
  background:rgba(15,122,99,.06);
}
.topic-card.is-current .topic-no{color:var(--c-accent-dark)}

/* ---------- CTA 深色块 ---------- */
.cta-band{background:var(--c-ink);color:var(--c-invert);border-radius:0}
.cta-inner{
  display:grid;
  grid-template-columns:1.25fr .75fr;
  gap:40px;
  align-items:center;
  padding:72px 0;
}
.cta-inner h2{font-size:30px;line-height:1.35;font-weight:700;margin-bottom:14px}
.cta-inner p{font-size:16px;line-height:1.85;color:rgba(244,242,236,.76);max-width:38em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-note{margin-top:16px;font-size:12.5px;color:rgba(244,242,236,.55)}

/* ---------- 页脚 ---------- */
.footer{background:var(--c-ink-2);color:var(--c-invert);margin-top:auto}
.footer .container{padding-top:64px;padding-bottom:28px}
.footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr 1.2fr;gap:40px}
.footer .brand-name{font-size:17px}
.footer-about{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(244,242,236,.62);max-width:26em}
.footer h4{font-size:14px;font-weight:700;color:var(--c-accent);margin-bottom:16px;letter-spacing:.03em}
.footer ul{display:flex;flex-direction:column;gap:10px}
.footer ul a{font-size:14px;color:rgba(244,242,236,.66);transition:color .18s ease}
.footer ul a:hover{color:#fff}
.footer-contact{font-size:14px;line-height:1.85;color:rgba(244,242,236,.62)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  margin-top:48px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.10);
  font-size:12.5px;color:rgba(244,242,236,.52);
}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .container{max-width:1200px}
}
@media (max-width:1279px){
  .sidebar{width:216px}
  .container{padding:0 32px}
  .topic-grid{grid-template-columns:repeat(3,1fr)}
}
@media (min-width:1024px) and (max-width:1279px){
  .sidebar{width:76px}
  .sidebar .brand-name,
  .sidebar .nav-item span,
  .sidebar .sidebar-tools{display:none}
  .sidebar-head{justify-content:center;padding:20px 8px}
  .nav-item{justify-content:center;padding:0;gap:0}
  .nav-item svg{width:20px;height:20px}
  .drawer-close{display:none}
}
@media (max-width:1023px){
  .app{display:block}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
    padding:0 20px;
    background:var(--c-ink);
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .topbar .brand-name{font-size:16px}
  .sidebar{
    position:fixed;top:0;right:0;bottom:0;
    width:84%;max-width:360px;height:100vh;
    transform:translateX(100%);
    transition:transform .28s cubic-bezier(.2,.7,.3,1);
    z-index:90;
  }
  .sidebar.is-open{transform:translateX(0)}
  .drawer-close{
    display:inline-flex;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:var(--r-sm);
    color:var(--c-invert);
  }
  .drawer-close:hover{background:rgba(255,255,255,.08)}
  .overlay{
    display:block;position:fixed;inset:0;z-index:80;
    background:rgba(15,21,18,.55);
    opacity:0;visibility:hidden;
    transition:opacity .24s ease,visibility .24s ease;
  }
  .overlay.is-open{opacity:1;visibility:visible}
  body.nav-open{overflow:hidden}
  .content{padding-top:64px}
  .container{padding:0 28px}
  .section{padding:72px 0}
  .hero-inner{padding-top:40px;padding-bottom:52px}
  .cta-inner{grid-template-columns:1fr;padding:56px 0;gap:28px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .scene-grid{grid-template-columns:1fr}
  .fact-row{grid-template-columns:150px 110px 1fr;gap:18px;padding:20px 22px}
  .chapter-body{width:calc(100% - 48px);padding:26px 28px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .hero h1{font-size:32px}
  .hero-lead{font-size:16.5px}
  .section-title{font-size:25px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:28px}
  .fact-row{grid-template-columns:1fr;gap:6px;padding:20px}
  .fact-value{font-size:20px}
  .chapter-figure img{aspect-ratio:16/10}
  .chapter-body{
    width:calc(100% - 24px);
    margin-top:-30px;
    padding:22px 22px 24px;
  }
  .item{grid-template-columns:56px 1fr;gap:16px;padding:22px 4px}
  .item-no{font-size:26px}
  .item-link{grid-column:2}
  .topic-grid{grid-template-columns:repeat(2,1fr)}
  .scene-main{min-height:280px}
  .scene-main-inner{padding:26px}
  .table-wrap{overflow-x:auto}
  table.compare{min-width:620px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .faq-a p{border-left:0;padding-left:24px}
}
@media (max-width:560px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero h1{font-size:30px}
  .hero-lead{font-size:16px}
  .hero-badges li{font-size:12px;padding:5px 12px}
  .topic-grid{grid-template-columns:1fr}
  .btn{width:100%}
  .btn-link{width:auto}
  .footer-bottom{flex-direction:column;gap:8px}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .chapter-figure:hover img,.topic-card:hover,.item:hover,.scene-card:hover,.btn:hover{transform:none}
}

/* roulang page: category4 */
:root{
  --c-primary:#0F7A63;
  --c-primary-dark:#0B5F4D;
  --c-primary-light:#2AC3A6;
  --c-accent:#F0762A;
  --c-accent-dark:#C95A15;
  --c-ink:#0F1512;
  --c-ink-2:#1C2622;
  --c-bg:#F7F5F0;
  --c-bg-2:#EDEAE2;
  --c-card:#FFFFFF;
  --c-line:#DED9CE;
  --c-text:#1A211D;
  --c-muted:#5C665F;
  --c-reverse:#F4F2EC;
  --c-error:#C0392B;
  --c-success:#1B7F4B;
  --ff-base:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,sans-serif;
  --ff-num:"Manrope","Inter",system-ui,-apple-system,sans-serif;
  --r-s:8px;
  --r-m:14px;
  --r-l:20px;
  --r-p:999px;
  --sh-1:0 1px 2px rgba(15,21,18,.06),0 10px 26px -14px rgba(15,21,18,.20);
  --sh-2:0 2px 6px rgba(15,21,18,.08),0 22px 40px -20px rgba(15,21,18,.28);
  --sidebar-w:232px;
  --sec:96px;
  --pad:40px;
}
*,
*::before,
*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--ff-base);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--c-primary-dark);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-accent-dark);}
img{max-width:100%;display:block;}
svg{display:block;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:none;cursor:pointer;}
input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{max-width:1240px;margin:0 auto;padding:0 var(--pad);}

/* ---------- 布局 ---------- */
.layout{display:flex;min-height:100vh;align-items:flex-start;background:var(--c-bg);}
.main{flex:1 1 auto;min-width:0;}

/* ---------- 侧栏 ---------- */
.sidebar{
  width:var(--sidebar-w);
  flex:0 0 var(--sidebar-w);
  position:sticky;
  top:0;
  align-self:flex-start;
  height:100vh;
  background:var(--c-ink);
  color:var(--c-reverse);
  display:flex;
  flex-direction:column;
  border-right:1px solid rgba(255,255,255,.08);
  z-index:60;
}
.sidebar-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:22px 20px 18px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--c-reverse);
  text-decoration:none;
}
.brand:hover{color:#fff;}
.brand-mark{
  width:26px;
  height:26px;
  color:var(--c-accent);
  flex:0 0 26px;
}
.brand-name{
  font-size:18px;
  font-weight:700;
  letter-spacing:.02em;
  white-space:nowrap;
}
.burger{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  color:var(--c-reverse);
  transition:background .18s ease;
}
.burger:hover{background:rgba(255,255,255,.08);}
.burger svg{width:22px;height:22px;}
.sidebar-body{
  flex:1 1 auto;
  display:flex;
  flex-direction:column;
  min-height:0;
  overflow-y:auto;
  padding-bottom:18px;
}
.nav{display:flex;flex-direction:column;padding:0 12px;gap:2px;}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  height:44px;
  padding:0 20px;
  border-radius:10px;
  font-size:15px;
  line-height:1.4;
  color:rgba(244,242,236,.72);
  text-decoration:none;
  transition:background .18s ease,color .18s ease;
}
.nav-item svg{width:18px;height:18px;flex:0 0 18px;}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-item.is-active{background:rgba(255,255,255,.09);color:#fff;font-weight:600;}
.nav-item.is-active::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  bottom:9px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--c-accent);
}
.sidebar-foot{
  margin-top:auto;
  padding:20px 20px 0;
  border-top:1px solid rgba(255,255,255,.08);
}
.search-label{
  display:block;
  font-size:12.5px;
  letter-spacing:.08em;
  color:rgba(244,242,236,.55);
  margin-bottom:8px;
}
.search{position:relative;display:flex;align-items:center;}
.search-input{
  width:100%;
  height:40px;
  padding:0 38px 0 12px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.04);
  color:var(--c-reverse);
  font-size:13.5px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search-input::placeholder{color:rgba(244,242,236,.4);}
.search-input:focus{
  outline:none;
  border-color:var(--c-primary-light);
  box-shadow:0 0 0 3px rgba(42,195,166,.16);
}
.search-btn{
  position:absolute;
  right:4px;
  width:32px;
  height:32px;
  display:grid;
  place-items:center;
  border-radius:8px;
  color:rgba(244,242,236,.6);
  transition:color .18s ease,background .18s ease;
}
.search-btn:hover{color:#fff;background:rgba(255,255,255,.08);}
.search-btn svg{width:16px;height:16px;}
.sidebar-note{
  margin-top:12px;
  font-size:12.5px;
  line-height:1.6;
  color:rgba(244,242,236,.42);
}
.scrim{
  position:fixed;
  inset:0;
  background:rgba(15,21,18,.55);
  opacity:0;
  pointer-events:none;
  transition:opacity .24s ease;
  z-index:65;
}
.scrim.show{opacity:1;pointer-events:auto;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec) 0;}
.section--tight{padding:calc(var(--sec) * .72) 0;}
.section--alt{background:var(--c-bg-2);}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
}
.sec-head h2{
  font-size:30px;
  line-height:1.35;
  letter-spacing:.01em;
}
.sec-head p{
  margin-top:10px;
  max-width:640px;
  font-size:15.5px;
  color:var(--c-muted);
  line-height:1.85;
}
.sec-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--c-primary-dark);
  white-space:nowrap;
}
.sec-link svg{width:16px;height:16px;transition:transform .18s ease;}
.sec-link:hover svg{transform:translateX(3px);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--c-primary);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:18px;
  height:2px;
  background:var(--c-accent);
  border-radius:2px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-m);
  font-size:15px;
  font-weight:600;
  line-height:1;
  text-decoration:none;
  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 svg{width:17px;height:17px;}
.btn-primary{background:var(--c-accent);color:#14100A;}
.btn-primary:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-line{border-color:rgba(255,255,255,.42);color:var(--c-reverse);background:transparent;}
.btn-line:hover{border-color:var(--c-primary-light);color:#fff;background:rgba(255,255,255,.08);}
.btn-outline{border-color:var(--c-line);background:var(--c-card);color:var(--c-text);}
.btn-outline:hover{border-color:var(--c-primary);color:var(--c-primary-dark);background:rgba(15,122,99,.06);transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn[disabled],
.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 面包屑 ---------- */
.crumb{
  padding:28px 0 0;
  font-size:13px;
  color:var(--c-muted);
}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li::after{content:"/";color:var(--c-line);}
.crumb li:last-child::after{display:none;}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-primary-dark);}
.crumb .current{color:var(--c-text);font-weight:600;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  margin-top:24px;
  padding:72px 0 64px;
  background-image:linear-gradient(135deg,rgba(10,16,14,.90) 12%,rgba(10,16,14,.46) 62%,rgba(10,16,14,.30) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  color:var(--c-reverse);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-80px;
  top:-60px;
  width:420px;
  height:420px;
  border:1px solid rgba(244,242,236,.10);
  transform:rotate(18deg);
  border-radius:64px;
  pointer-events:none;
}
.hero-inner{position:relative;z-index:1;max-width:840px;}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:var(--r-p);
  background:rgba(240,118,42,.16);
  border:1px solid rgba(240,118,42,.38);
  color:#FFD7B8;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.06em;
}
.hero-inner h1{
  margin-top:20px;
  font-size:clamp(30px,4vw,46px);
  line-height:1.25;
  font-weight:800;
  color:var(--c-reverse);
  letter-spacing:.01em;
}
.hero-lead{
  margin-top:20px;
  font-size:18px;
  line-height:1.8;
  color:rgba(244,242,236,.84);
  max-width:720px;
}
.hero-badges{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.hero-badges span{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 14px;
  border-radius:var(--r-p);
  font-size:12.5px;
  font-weight:600;
  color:rgba(244,242,236,.86);
  background:rgba(255,255,255,.09);
  border:1px solid rgba(255,255,255,.16);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}

/* ---------- 要点 ---------- */
.points-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
}
.point-card{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-l);
  padding:26px 24px;
  box-shadow:var(--sh-1);
  transition:border-color .24s ease,box-shadow .24s ease,transform .24s ease;
}
.point-card:hover{border-color:rgba(15,122,99,.32);box-shadow:var(--sh-2);transform:translateY(-4px);}
.point-ico{
  width:42px;
  height:42px;
  display:grid;
  place-items:center;
  border-radius:12px;
  background:rgba(15,122,99,.10);
  color:var(--c-primary);
  margin-bottom:16px;
}
.point-ico svg{width:22px;height:22px;}
.point-card h3{font-size:17px;line-height:1.5;margin-bottom:8px;}
.point-card p{font-size:14.5px;line-height:1.8;color:var(--c-muted);}

/* ---------- 主图 ---------- */
.figure-wide{
  margin:0;
  border-radius:var(--r-l);
  overflow:hidden;
  border:1px solid var(--c-line);
  background:var(--c-bg-2);
  box-shadow:var(--sh-1);
}
.figure-wide img{
  width:100%;
  aspect-ratio:21/9;
  object-fit:cover;
}
.figure-wide figcaption{
  padding:14px 20px;
  font-size:12.5px;
  color:var(--c-muted);
  text-align:center;
  background:var(--c-card);
  border-top:1px solid var(--c-line);
}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin-top:8px;}
.tl-item{
  position:relative;
  padding:0 0 40px 64px;
}
.tl-item::before{
  content:"";
  position:absolute;
  left:17px;
  top:38px;
  bottom:0;
  width:2px;
  background:linear-gradient(180deg,rgba(15,122,99,.45),rgba(15,122,99,.12));
}
.tl-item:last-child{padding-bottom:0;}
.tl-item:last-child::before{display:none;}
.tl-dot{
  position:absolute;
  left:0;
  top:0;
  width:36px;
  height:36px;
  border-radius:50%;
  display:grid;
  place-items:center;
  background:var(--c-card);
  border:2px solid var(--c-primary);
  color:var(--c-primary-dark);
  font-family:var(--ff-num);
  font-size:13px;
  font-weight:800;
  letter-spacing:.02em;
  box-shadow:0 0 0 5px rgba(15,122,99,.07);
}
.tl-body{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-l);
  padding:24px 26px;
  box-shadow:var(--sh-1);
  transition:border-color .24s ease,box-shadow .24s ease;
}
.tl-body:hover{border-color:rgba(15,122,99,.30);box-shadow:var(--sh-2);}
.tl-body h3{
  font-size:21px;
  line-height:1.5;
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:12px;
}
.tl-step{
  font-family:var(--ff-num);
  font-size:13px;
  font-weight:800;
  letter-spacing:.12em;
  color:var(--c-accent-dark);
}
.tl-body p{
  margin-top:10px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--c-muted);
}
.tl-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:16px;
}
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-p);
  font-size:12.5px;
  font-weight:600;
  background:rgba(15,122,99,.09);
  color:var(--c-primary-dark);
}
.tag--accent{background:rgba(240,118,42,.13);color:var(--c-accent-dark);}

/* ---------- 对照表 ---------- */
.table-shell{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.table-scroll{overflow-x:auto;}
.spec-table{
  width:100%;
  min-width:640px;
  border-collapse:collapse;
  font-size:15.5px;
}
.spec-table caption{
  caption-side:top;
  text-align:left;
  padding:22px 26px 0;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--c-muted);
  font-weight:700;
}
.spec-table thead th{
  text-align:left;
  padding:18px 26px 14px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--c-muted);
  border-bottom:1px solid var(--c-line);
  white-space:nowrap;
}
.spec-table tbody td{
  padding:18px 26px;
  border-bottom:1px solid var(--c-line);
  vertical-align:top;
  line-height:1.75;
}
.spec-table tbody tr:last-child td{border-bottom:none;}
.spec-table tbody tr{transition:background .18s ease;}
.spec-table tbody tr:hover{background:var(--c-bg);}
.spec-table .name{font-weight:700;color:var(--c-text);white-space:nowrap;}

/* ---------- 编号清单 ---------- */
.row-list{
  border-top:1px solid var(--c-line);
}
.row-item{
  display:grid;
  grid-template-columns:72px minmax(0,1fr) auto;
  gap:24px;
  align-items:start;
  padding:26px 8px;
  border-bottom:1px solid var(--c-line);
  transition:background .18s ease;
}
.row-item:hover{background:var(--c-card);}
.row-num{
  font-family:var(--ff-num);
  font-size:26px;
  font-weight:800;
  line-height:1.2;
  color:var(--c-line);
  letter-spacing:.02em;
}
.row-item:hover .row-num{color:var(--c-accent);}
.row-item h3{font-size:18px;line-height:1.55;}
.row-item p{
  margin-top:8px;
  font-size:14.8px;
  line-height:1.85;
  color:var(--c-muted);
}
.row-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:38px;
  padding:0 16px;
  border-radius:var(--r-s);
  border:1px solid var(--c-line);
  background:var(--c-card);
  font-size:13.5px;
  font-weight:600;
  color:var(--c-primary-dark);
  white-space:nowrap;
  align-self:center;
  transition:border-color .18s ease,background .18s ease,color .18s ease;
}
.row-link svg{width:14px;height:14px;transition:transform .18s ease;}
.row-link:hover{border-color:var(--c-primary);background:rgba(15,122,99,.07);color:var(--c-primary-dark);}
.row-link:hover svg{transform:translateX(3px);}

/* ---------- FAQ ---------- */
.faq-list{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--c-line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:56px;
  padding:16px 24px;
  text-align:left;
  font-size:17px;
  font-weight:500;
  line-height:1.6;
  color:var(--c-text);
  position:relative;
  transition:color .18s ease,background .18s ease;
}
.faq-q:hover{color:var(--c-primary-dark);background:rgba(15,122,99,.04);}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;
  top:14px;
  bottom:14px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:transparent;
  transition:background .2s ease;
}
.faq-item.is-open .faq-q::before{background:var(--c-accent);}
.faq-q svg{
  flex:0 0 20px;
  width:20px;
  height:20px;
  color:var(--c-muted);
  transition:transform .2s ease,color .2s ease;
}
.faq-item.is-open .faq-q svg{transform:rotate(45deg);color:var(--c-accent-dark);}
.faq-a{
  display:none;
  padding:0 24px 22px 24px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--c-muted);
}
.faq-item.is-open .faq-a{display:block;}

/* ---------- 相关分类 ---------- */
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.related-card{
  display:flex;
  flex-direction:column;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-l);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:border-color .24s ease,box-shadow .24s ease,transform .24s ease;
}
.related-card:hover{border-color:rgba(15,122,99,.32);box-shadow:var(--sh-2);transform:translateY(-4px);}
.related-thumb{
  aspect-ratio:16/10;
  background:var(--c-bg-2);
  overflow:hidden;
}
.related-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .32s cubic-bezier(.2,.7,.3,1);
}
.related-card:hover .related-thumb img{transform:scale(1.04);}
.related-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.related-body h3{font-size:18px;line-height:1.5;margin-bottom:8px;transition:color .2s ease;}
.related-card:hover .related-body h3{color:var(--c-primary-dark);}
.related-body p{font-size:14.5px;line-height:1.8;color:var(--c-muted);flex:1;}
.related-more{
  margin-top:16px;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13.5px;
  font-weight:600;
  color:var(--c-primary-dark);
}
.related-more svg{width:14px;height:14px;transition:transform .18s ease;}
.related-card:hover .related-more svg{transform:translateX(3px);}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--c-ink-2);
  color:var(--c-reverse);
  border-radius:var(--r-l);
  padding:52px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-70px;
  bottom:-90px;
  width:300px;
  height:300px;
  border:1px solid rgba(244,242,236,.10);
  border-radius:56px;
  transform:rotate(16deg);
  pointer-events:none;
}
.cta-band h2{
  color:var(--c-reverse);
  font-size:28px;
  line-height:1.35;
}
.cta-band p{
  margin-top:12px;
  font-size:15.5px;
  line-height:1.85;
  color:rgba(244,242,236,.72);
  max-width:560px;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1;}

/* ---------- 页脚 ---------- */
.footer{
  background:var(--c-ink-2);
  color:var(--c-reverse);
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
}
.footer .brand{color:var(--c-reverse);}
.footer .brand:hover{color:#fff;}
.footer .brand-mark{width:28px;height:28px;flex:0 0 28px;}
.footer .brand-name{font-size:17px;}
.footer-about{
  margin-top:16px;
  font-size:14px;
  line-height:1.85;
  color:rgba(244,242,236,.62);
  max-width:360px;
}
.footer h4{
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--c-accent);
  margin-bottom:16px;
}
.footer ul{display:flex;flex-direction:column;gap:10px;}
.footer ul a{
  font-size:14px;
  color:rgba(244,242,236,.66);
  transition:color .18s ease;
}
.footer ul a:hover{color:#fff;}
.footer-contact{
  font-size:14px;
  line-height:1.9;
  color:rgba(244,242,236,.62);
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:12.5px;
  color:rgba(244,242,236,.5);
}

/* ---------- 响应式 ---------- */
@media (min-width:1280px) and (max-width:1439px){
  :root{--sidebar-w:216px;}
}
@media (min-width:1024px) and (max-width:1279px){
  :root{--sidebar-w:76px;}
  .brand-name{display:none;}
  .sidebar-top{justify-content:center;padding:22px 0 18px;}
  .nav{padding:0 10px;}
  .nav-item{justify-content:center;padding:0;gap:0;}
  .nav-item span{display:none;}
  .nav-item.is-active::before{left:-10px;}
  .sidebar-foot{display:none;}
}
@media (max-width:1279px){
  :root{--sec:80px;}
}
@media (max-width:1023px){
  :root{--sec:72px;--pad:28px;}
  .layout{display:block;}
  .sidebar{
    position:fixed;
    top:0;
    left:0;
    right:0;
    width:100%;
    flex:none;
    height:64px;
    flex-direction:row;
    align-items:center;
    border-right:none;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .sidebar-top{width:100%;height:64px;padding:0 18px;justify-content:space-between;}
  .brand-name{display:inline;}
  .burger{display:inline-flex;}
  .sidebar-body{
    position:fixed;
    top:0;
    right:0;
    width:84%;
    max-width:360px;
    height:100vh;
    background:var(--c-ink-2);
    transform:translateX(100%);
    transition:transform .28s cubic-bezier(.2,.7,.3,1);
    padding:84px 16px 28px;
    overflow-y:auto;
    z-index:70;
    border-left:1px solid rgba(255,255,255,.08);
  }
  .sidebar-body.is-open{transform:translateX(0);}
  .sidebar-foot{display:block;margin-top:24px;padding:20px 4px 0;}
  .main{padding-top:64px;}
  .page-hero{padding:52px 0 48px;}
  .points-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;}
}
@media (max-width:768px){
  :root{--sec:56px;--pad:20px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px;}
  .sec-head h2{font-size:24px;}
  .points-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .row-item{grid-template-columns:1fr;gap:12px;padding:22px 4px;}
  .row-num{font-size:20px;}
  .row-link{align-self:flex-start;}
  .tl-item{padding-left:52px;}
  .tl-dot{width:32px;height:32px;font-size:12px;}
  .tl-item::before{left:15px;top:34px;}
  .tl-body{padding:20px;}
  .tl-body h3{font-size:18px;}
  .page-hero::after{display:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:560px){
  .hero-inner h1{font-size:30px;}
  .hero-lead{font-size:16px;}
  .page-hero{padding:44px 0 40px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .faq-q{font-size:15.5px;padding:14px 18px;}
  .faq-a{padding:0 18px 20px;}
  .spec-table tbody td,
  .spec-table thead th{padding-left:18px;padding-right:18px;}
  .cta-band{padding:32px 22px;}
  .cta-band h2{font-size:22px;}
}
@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .point-card:hover,
  .related-card:hover,
  .btn:hover{transform:none;}
  .related-card:hover .related-thumb img{transform:none;}
}

/* roulang page: category5 */
:root{
  --c-primary:#0F7A63;
  --c-primary-d:#0B5F4D;
  --c-primary-l:#2AC3A6;
  --c-accent:#F0762A;
  --c-accent-d:#C95A15;
  --c-ink:#0F1512;
  --c-ink-2:#1C2622;
  --c-page:#F7F5F0;
  --c-band:#EDEAE2;
  --c-card:#FFFFFF;
  --c-line:#DED9CE;
  --c-text:#1A211D;
  --c-muted:#5C665F;
  --c-invert:#F4F2EC;
  --c-error:#C0392B;
  --c-ok:#1B7F4B;
  --ff-base:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  --ff-num:Manrope,Inter,system-ui,"PingFang SC",sans-serif;
  --r-s:8px;
  --r-m:14px;
  --r-l:20px;
  --r-p:999px;
  --sh-1:0 1px 2px rgba(15,21,18,.06),0 10px 26px -14px rgba(15,21,18,.20);
  --sh-2:0 4px 10px rgba(15,21,18,.08),0 18px 40px -18px rgba(15,21,18,.28);
  --sidebar-w:232px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-left:var(--sidebar-w);
  background:var(--c-page);
  color:var(--c-text);
  font-family:var(--ff-base);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
body.is-locked{overflow:hidden}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700}
h1{font-size:clamp(30px,4vw,46px);line-height:1.25;font-weight:800;letter-spacing:-.01em}
h2{font-size:30px;line-height:1.35;font-weight:700}
h3{font-size:22px;line-height:1.5;font-weight:700}
p{margin:0}
img{display:block;max-width:100%}
a{color:var(--c-primary-d);text-decoration:none;transition:color .16s ease}
a:hover{color:var(--c-primary)}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
button:disabled{cursor:not-allowed;opacity:.45}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;inset:0 auto 0 0;
  width:var(--sidebar-w);
  display:flex;flex-direction:column;
  background:var(--c-ink);
  color:var(--c-invert);
  border-right:1px solid rgba(255,255,255,.08);
  z-index:90;
  overflow:hidden;
}
.sidebar-top{padding:22px 20px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-invert)}
.brand:hover{color:#fff}
.brand-mark{width:26px;height:26px;flex:none;color:var(--c-accent)}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.02em;line-height:1.3;white-space:nowrap}
.nav{
  flex:1 1 auto;
  display:flex;flex-direction:column;
  padding:14px 12px;
  gap:2px;
  overflow-y:auto;
  scrollbar-width:thin;
}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 8px 0 8px;
  border-radius:var(--r-s);
  color:rgba(244,242,236,.78);
  font-size:15px;
  line-height:1;
  transition:background .16s ease,color .16s ease;
}
.nav-item svg{width:18px;height:18px;flex:none}
.nav-item span{white-space:nowrap}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.is-active{background:rgba(255,255,255,.09);color:#fff;font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:2px;background:var(--c-accent);
}
.sidebar-foot{padding:16px 20px 22px;border-top:1px solid rgba(255,255,255,.08)}
.side-search{position:relative;display:block}
.side-search svg{position:absolute;left:10px;top:50%;transform:translateY(-50%);width:15px;height:15px;color:rgba(244,242,236,.5)}
.side-search input{
  width:100%;height:38px;padding:0 10px 0 32px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-s);
  color:var(--c-invert);font-size:13.5px;
  transition:border-color .16s ease,background .16s ease;
}
.side-search input::placeholder{color:rgba(244,242,236,.45)}
.side-search input:focus{outline:none;border-color:var(--c-primary-l);background:rgba(255,255,255,.08)}
.side-note{margin-top:10px;font-size:12.5px;line-height:1.6;color:rgba(244,242,236,.6)}

/* ============ 移动端顶栏与抽屉 ============ */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;
  align-items:center;justify-content:space-between;
  padding:0 18px;background:var(--c-ink);color:var(--c-invert);
  border-bottom:1px solid rgba(255,255,255,.08);z-index:100;
}
.hamburger{
  width:44px;height:44px;display:grid;place-items:center;
  border-radius:var(--r-s);color:var(--c-invert);
  transition:background .16s ease;
}
.hamburger:hover{background:rgba(255,255,255,.08)}
.hamburger svg{width:22px;height:22px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,21,18,.55);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:110;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84%;max-width:340px;
  background:var(--c-ink);color:var(--c-invert);
  transform:translateX(100%);transition:transform .26s cubic-bezier(.2,.7,.3,1);
  z-index:120;display:flex;flex-direction:column;padding:18px 16px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.1)}
.drawer-close{width:40px;height:40px;display:grid;place-items:center;border-radius:var(--r-s);color:var(--c-invert)}
.drawer-close:hover{background:rgba(255,255,255,.08)}
.drawer-close svg{width:20px;height:20px}
.drawer .nav{padding:14px 0 0}
.drawer .nav-item{height:46px}
.drawer-foot{margin-top:auto;padding-top:18px;border-top:1px solid rgba(255,255,255,.1)}

/* ============ 通用组件 ============ */
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13.5px;color:var(--c-muted);padding:26px 0 0;
}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:#B4AE9F}
.breadcrumb .cur{color:var(--c-text)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-p);
  font-size:12.5px;line-height:1.7;font-weight:600;
  background:rgba(15,122,99,.10);color:var(--c-primary-d);
}
.badge-accent{background:rgba(240,118,42,.12);color:var(--c-accent-d)}
.badge-ondark{background:rgba(244,242,236,.14);color:var(--c-invert)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-m);
  font-size:15.5px;font-weight:600;letter-spacing:.01em;
  transition:background .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;
  border:1px solid transparent;
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--c-accent);color:#14100A;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-accent-d);color:#140F0A;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border-color:var(--c-line);background:transparent;color:var(--c-text)}
.btn-outline:hover{border-color:var(--c-primary);background:rgba(15,122,99,.08);color:var(--c-primary-d)}
.btn-onDark-outline{border-color:rgba(244,242,236,.45);background:transparent;color:var(--c-invert)}
.btn-onDark-outline:hover{border-color:var(--c-invert);background:rgba(244,242,236,.12);color:#fff}
.btn-ghost{height:auto;padding:0;color:var(--c-primary-d);font-weight:600}
.btn-ghost svg{transition:transform .16s ease}
.btn-ghost:hover{color:var(--c-primary)}
.btn-ghost:hover svg{transform:translateX(3px)}

.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--c-primary-d)}
.link-arrow svg{width:15px;height:15px;transition:transform .16s ease}
.link-arrow:hover svg{transform:translateX(3px)}

.section{padding:72px 0}
.section-tight{padding:56px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.sec-head .eyebrow{
  display:block;font-family:var(--ff-num);font-size:13px;font-weight:700;
  letter-spacing:.14em;color:var(--c-accent-d);margin-bottom:10px;text-transform:uppercase;
}
.sec-desc{margin-top:10px;max-width:720px;color:var(--c-muted);font-size:15.5px}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:var(--c-ink);
  color:var(--c-invert);
  border-radius:0 0 var(--r-l) var(--r-l);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.92;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(10,16,14,.88) 0%,rgba(10,16,14,.62) 52%,rgba(10,16,14,.30) 100%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:44px;align-items:center;
  padding-top:52px;padding-bottom:60px;
}
.hero-copy{color:var(--c-invert)}
.hero-copy h1{color:var(--c-invert);margin:16px 0 18px}
.hero-lead{font-size:17.5px;line-height:1.85;color:rgba(244,242,236,.86);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-figure{
  margin:0;border-radius:var(--r-l);overflow:hidden;
  border:1px solid rgba(244,242,236,.18);
  box-shadow:0 24px 60px -30px rgba(0,0,0,.7);
  background:var(--c-ink-2);
}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-figure figcaption{
  padding:12px 16px;font-size:12.5px;color:rgba(244,242,236,.72);
  border-top:1px solid rgba(244,242,236,.14);
}

/* ============ 筛选胶囊 ============ */
.filter-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  padding:20px 22px;margin-top:-32px;position:relative;z-index:5;
  background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-l);box-shadow:var(--sh-1);
}
.filter-label{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--c-muted);margin-right:4px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  height:36px;padding:0 16px;border-radius:var(--r-p);
  border:1px solid var(--c-line);background:#fff;
  font-size:14px;color:var(--c-text);
  transition:all .16s ease;
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary-d);background:rgba(15,122,99,.06)}
.chip.is-on{background:var(--c-ink);border-color:var(--c-ink);color:var(--c-invert);font-weight:600}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent)}

/* ============ 对照表 ============ */
.table-wrap{
  background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-l);box-shadow:var(--sh-1);overflow:hidden;
}
.table-scroll{overflow-x:auto}
table.compare{width:100%;border-collapse:collapse;min-width:820px;font-size:14.8px}
table.compare caption{
  text-align:left;padding:20px 24px 0;font-size:13px;color:var(--c-muted);
}
table.compare thead th{
  text-align:left;padding:16px 20px;
  font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--c-muted);
  background:var(--c-band);border-bottom:1px solid var(--c-line);white-space:nowrap;
}
table.compare tbody th,table.compare tbody td{
  padding:16px 20px;border-bottom:1px solid var(--c-line);vertical-align:top;text-align:left;
}
table.compare tbody tr:last-child th,table.compare tbody tr:last-child td{border-bottom:0}
table.compare tbody th{font-weight:700;white-space:nowrap}
table.compare tbody tr:hover td,table.compare tbody tr:hover th{background:#FBFAF6}
table.compare .num{font-family:var(--ff-num);font-variant-numeric:tabular-nums}
.table-foot{
  display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;
  padding:16px 24px;border-top:1px solid var(--c-line);background:#FBFAF6;
  font-size:13px;color:var(--c-muted);
}

/* ============ 机型条目 ============ */
.model-list{display:flex;flex-direction:column;gap:18px}
.model-item{
  display:grid;grid-template-columns:240px minmax(0,1fr) auto;
  gap:24px;align-items:center;
  padding:20px;background:var(--c-card);
  border:1px solid var(--c-line);border-radius:var(--r-l);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.model-item:hover{border-color:rgba(15,122,99,.35);box-shadow:var(--sh-2);transform:translateY(-4px)}
.model-thumb{
  border-radius:var(--r-m);overflow:hidden;background:var(--c-band);
}
.model-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .32s cubic-bezier(.2,.7,.3,1)}
.model-item:hover .model-thumb img{transform:scale(1.04)}
.model-body h3{margin-bottom:8px;font-size:19px}
.model-item:hover .model-body h3{color:var(--c-primary-d)}
.model-body p{font-size:14.8px;line-height:1.8;color:var(--c-muted)}
.model-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.model-side{display:flex;flex-direction:column;align-items:flex-end;gap:10px;min-width:132px}
.model-price{font-family:var(--ff-num);font-size:15px;font-weight:700;color:var(--c-text);letter-spacing:.02em}
.model-side .link-arrow{font-size:14px}

/* ============ 决策步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.step{
  position:relative;padding:26px 24px;
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-l);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.step:hover{border-color:rgba(15,122,99,.35);box-shadow:var(--sh-2);transform:translateY(-4px)}
.step-no{
  font-family:var(--ff-num);font-size:34px;font-weight:800;line-height:1;
  color:var(--c-accent);letter-spacing:-.02em;
}
.step h3{font-size:18px;margin:12px 0 8px}
.step p{font-size:14.8px;color:var(--c-muted);line-height:1.8}
.step ul{margin-top:12px;display:flex;flex-direction:column;gap:6px}
.step li{position:relative;padding-left:16px;font-size:14px;color:var(--c-muted)}
.step li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--c-primary)}

/* ============ 清单 / 高亮块 ============ */
.checklist{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 32px;
  padding:24px 26px;background:var(--c-card);
  border:1px solid var(--c-line);border-left:3px solid var(--c-primary);
  border-radius:var(--r-m);
}
.checklist li{display:flex;gap:10px;font-size:15px;line-height:1.8;color:var(--c-text)}
.checklist svg{width:18px;height:18px;flex:none;color:var(--c-primary);margin-top:5px}

/* ============ FAQ ============ */
.faq{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-1)}
.faq-item + .faq-item{border-top:1px solid var(--c-line)}
.faq-q{
  position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;padding:16px 24px;text-align:left;
  font-size:17px;font-weight:500;color:var(--c-text);
  transition:background .16s ease,color .16s ease,padding-left .2s ease;
}
.faq-q:hover{background:#FBFAF6}
.faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  background:var(--c-accent);border-radius:2px;opacity:0;transition:opacity .2s ease;
}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-item.is-open .faq-q{padding-left:32px;color:var(--c-primary-d);font-weight:600}
.faq-icon{flex:none;width:20px;height:20px;color:var(--c-muted);transition:transform .2s ease,color .2s ease}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--c-accent-d)}
.faq-a{display:none;padding:0 24px 22px;font-size:15.5px;line-height:1.85;color:var(--c-muted)}
.faq-item.is-open .faq-a{display:block}
.faq-a p + p{margin-top:10px}

/* ============ 相关分类 ============ */
.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.related-card{
  display:flex;flex-direction:column;gap:10px;
  padding:22px;background:var(--c-card);
  border:1px solid var(--c-line);border-radius:var(--r-l);
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.related-card:hover{background:var(--c-ink);border-color:var(--c-ink);transform:translateY(-4px)}
.related-card .no{font-family:var(--ff-num);font-size:22px;font-weight:800;color:var(--c-accent)}
.related-card h3{font-size:17px;transition:color .2s ease}
.related-card p{font-size:13.8px;color:var(--c-muted);line-height:1.75;transition:color .2s ease}
.related-card:hover h3{color:var(--c-invert)}
.related-card:hover p{color:rgba(244,242,236,.72)}

/* ============ CTA ============ */
.cta{
  background:var(--c-ink);color:var(--c-invert);
  border-radius:var(--r-l);padding:44px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  position:relative;overflow:hidden;
}
.cta::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;
  border:1px solid rgba(244,242,236,.10);border-radius:50%;
}
.cta h2{color:var(--c-invert);font-size:26px}
.cta p{margin-top:10px;color:rgba(244,242,236,.76);font-size:15px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:none;position:relative;z-index:2}

/* ============ 页脚 ============ */
.footer{background:var(--c-ink-2);color:var(--c-invert);margin-top:80px}
.footer .container{padding-top:56px;padding-bottom:24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer .brand{color:var(--c-invert);margin-bottom:14px}
.footer .brand-mark{color:var(--c-accent)}
.footer-about{margin-top:12px;font-size:14px;line-height:1.8;color:rgba(244,242,236,.66);max-width:320px}
.footer h4{font-size:14px;color:var(--c-accent);letter-spacing:.06em;margin-bottom:14px}
.footer ul{display:flex;flex-direction:column;gap:9px}
.footer ul a{font-size:14px;color:rgba(244,242,236,.72)}
.footer ul a:hover{color:#fff}
.footer-contact{font-size:14px;line-height:1.9;color:rgba(244,242,236,.66)}
.footer-bottom{
  margin-top:40px;padding-top:18px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:rgba(244,242,236,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .container{padding:0 32px}
}
@media (max-width:1279px){
  :root{--sidebar-w:216px}
  .container{padding:0 28px}
  .hero-inner{grid-template-columns:minmax(0,1fr);gap:32px}
  .hero-figure{max-width:520px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  :root{--sidebar-w:0px}
  body{padding-left:0;padding-top:64px}
  .sidebar{display:none}
  .mobile-bar{display:flex}
  .container{padding:0 24px}
  .section{padding:72px 0}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .model-item{grid-template-columns:200px minmax(0,1fr);gap:20px}
  .model-side{grid-column:1 / -1;flex-direction:row;align-items:center;justify-content:space-between;width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-tight{padding:44px 0}
  h2{font-size:24px}
  .hero-inner{padding-top:38px;padding-bottom:44px}
  .hero-lead{font-size:16px}
  .hero-actions .btn{width:100%}
  .hero-figure img{aspect-ratio:16/10}
  .filter-bar{margin-top:-24px;padding:16px}
  .chip{height:34px;padding:0 13px;font-size:13.5px}
  .checklist{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .model-item{grid-template-columns:1fr;padding:16px}
  .model-side{flex-direction:column;align-items:flex-start;gap:8px}
  .related-grid{grid-template-columns:1fr}
  .cta{flex-direction:column;align-items:flex-start;padding:32px 24px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer .container{padding-top:44px}
  .footer-bottom{flex-direction:column}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:559px){
  h1{font-size:30px}
  .btn{width:100%}
  .hero-meta{width:100%}
  .faq-q{font-size:15.5px;padding:14px 18px}
  .faq-item.is-open .faq-q{padding-left:26px}
  .faq-a{padding:0 18px 18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important;scroll-behavior:auto !important}
  .model-item:hover,.step:hover,.related-card:hover{transform:none}
  .model-item:hover .model-thumb img{transform:none}
}