/* roulang page: index */
:root{
  --ink:#12181A;
  --ink-2:#4A5A5E;
  --line:#E3E6DD;
  --paper:#F7F6F0;
  --surface:#FFFFFF;
  --brand:#0E7A5F;
  --brand-deep:#0A3128;
  --accent:#D8FF4A;
  --accent-2:#FF7A45;
  --radius:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(18,24,26,.05);
  --shadow-2:0 10px 24px rgba(10,49,40,.10);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:700;line-height:1.35}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid rgba(14,122,95,.55);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 16px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 40px}}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(18,24,26,.04);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 6px 18px rgba(10,49,40,.08)}
.header-top{display:flex;align-items:center;height:60px;transition:height .2s ease}
.site-header.scrolled .header-top{height:52px}
.nav-inner{display:flex;align-items:center;gap:20px;width:100%}
.brand{display:flex;align-items:baseline;gap:8px;font-size:17px;font-weight:700;color:var(--brand-deep);white-space:nowrap}
.brand small{font-size:11px;font-weight:500;color:var(--ink-2);opacity:.75}
.nav-links{display:none;align-items:center;gap:22px;margin-left:8px}
@media(min-width:1024px){.nav-links{display:flex}}
.nav-link{
  position:relative;padding:6px 0;font-size:14px;font-weight:500;color:var(--ink-2);
  transition:color .18s ease;
}
.nav-link::after{
  content:'';position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover,.nav-link.active{color:var(--brand-deep)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{font-weight:600}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.search-pill{display:none;align-items:center;gap:8px;height:36px;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:#fff;min-width:190px}
@media(min-width:768px){.search-pill{display:flex}}
.search-pill:focus-within{border-color:var(--brand);box-shadow:0 0 0 2px rgba(14,122,95,.18)}
.search-pill i{font-size:13px;color:var(--ink-2);opacity:.7}
.search-pill input{border:0;outline:none;background:transparent;font-size:13px;color:var(--ink);width:100%;line-height:1.4}
.search-pill input::placeholder{color:#9AA5A2}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--brand-deep);
  cursor:pointer;transition:all .18s ease;
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand)}
@media(min-width:1024px){.icon-btn.nav-toggle{display:none}}

.header-sub{border-top:1px solid var(--line);background:var(--surface)}
.sub-inner{display:flex;align-items:center;gap:16px;height:46px;overflow:hidden}
.channel-chips{display:flex;align-items:center;gap:8px;overflow-x:auto;flex:1;scrollbar-width:none}
.channel-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:13px;color:var(--ink-2);
  white-space:nowrap;transition:all .18s ease;
}
.chip:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff}
.chip.active{background:#E8F3EE;border-color:#CDE4DA;color:var(--brand-deep);font-weight:600}
.hotwords{display:none;align-items:center;gap:8px;font-size:12px;color:#93A09C;white-space:nowrap}
@media(min-width:1024px){.hotwords{display:flex}}
.hot-pill{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:12px;color:var(--ink-2);transition:all .18s ease;cursor:default;
}
.hot-pill:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:80;background:#fff;padding:20px 16px 40px;
  transform:translateY(-12px);opacity:0;pointer-events:none;transition:all .25s ease;overflow-y:auto;
}
.mobile-drawer.open{transform:none;opacity:1;pointer-events:auto}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;border-bottom:1px solid var(--line);font-size:15px;font-weight:500;color:var(--ink);
}
.drawer-link.active{color:var(--brand-deep);font-weight:600}
.drawer-search{display:flex;align-items:center;gap:8px;height:42px;padding:0 14px;border:1px solid var(--line);border-radius:999px;margin:20px 0}
.drawer-search input{border:0;outline:none;background:transparent;font-size:14px;width:100%;color:var(--ink)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--accent);color:var(--ink);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand-deep)}
.btn-ghost:hover{border-color:var(--brand-deep);background:#FBFAF4}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:9px}
.btn-lg{height:48px;padding:0 28px;font-size:16px}
.btn-dark{background:var(--brand-deep);color:#fff}
.btn-dark:hover{background:var(--accent);color:var(--ink)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.link-arrow i{transition:transform .2s ease;font-size:12px}
.link-arrow:hover{color:var(--brand-deep)}
.link-arrow:hover i{transform:translateX(3px)}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:500;background:#E8F3EE;color:var(--brand-deep);line-height:1;
}
.badge-hot{background:var(--accent-2);color:#fff}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:13px;color:var(--ink-2);transition:all .18s ease;
}
.tag:hover{border-color:var(--brand);color:var(--brand-deep)}

/* ============ Hero ============ */
.hero{position:relative;padding:40px 0 48px;overflow:hidden}
.hero::before{
  content:'';position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(18,24,26,.07) 1px,transparent 1px);
  background-size:20px 20px;
  -webkit-mask-image:linear-gradient(120deg,rgba(0,0,0,.9),transparent 65%);
          mask-image:linear-gradient(120deg,rgba(0,0,0,.9),transparent 65%);
}
.hero-grid{position:relative;display:grid;gap:28px}
@media(min-width:1024px){
  .hero{padding:56px 0 64px}
  .hero-grid{grid-template-columns:1.06fr .94fr;align-items:center;gap:48px}
}
.hero-h1{font-size:clamp(30px,4.2vw,50px);line-height:1.2;font-weight:700;color:var(--ink)}
.hl{background:linear-gradient(transparent 62%,var(--accent) 62%);padding:0 2px}
.hero-sub{margin-top:16px;font-size:16px;line-height:1.8;color:var(--ink-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;padding-top:22px;border-top:1px solid var(--line)}
.hero-point{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2)}
.hero-point i{color:var(--brand);font-size:13px}
.hero-media{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--brand-deep);min-height:280px}
.hero-media img{width:100%;height:100%;min-height:280px;object-fit:cover;opacity:.94}
@media(min-width:1024px){.hero-media img{min-height:420px}}
.hero-media-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,49,40,.12),rgba(10,49,40,.78))}
.hero-media-info{position:absolute;left:18px;right:18px;bottom:18px;color:#fff}
.hero-media-info .badge{background:rgba(216,255,74,.92);color:var(--brand-deep)}
.hero-media-info p{margin-top:10px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.82)}
.hero-dot{position:absolute;top:18px;right:18px;width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 6px rgba(216,255,74,.18)}

/* ============ 通用板块 ============ */
.section{padding:44px 0}
@media(min-width:768px){.section{padding:64px 0}}
@media(min-width:1024px){.section{padding:80px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:28px}
.section-title{font-size:clamp(22px,2.6vw,30px);line-height:1.35;color:var(--ink)}
.section-desc{margin-top:8px;font-size:15px;line-height:1.8;color:var(--ink-2);max-width:46em}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  color:var(--brand);margin-bottom:10px;
}
.eyebrow::before{content:'';width:18px;height:2px;background:var(--brand);display:inline-block}

/* 价值条 */
.value-bar{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1)}
.value-grid{display:grid}
@media(min-width:768px){.value-grid{grid-template-columns:repeat(3,1fr)}}
.value-item{padding:22px 20px;display:flex;gap:14px;align-items:flex-start}
@media(min-width:768px){.value-item+.value-item{border-left:1px solid var(--line)}}
@media(max-width:767px){.value-item+.value-item{border-top:1px solid var(--line)}}
.value-icon{
  flex:none;width:38px;height:38px;border-radius:10px;background:#E8F3EE;
  display:flex;align-items:center;justify-content:center;color:var(--brand);font-size:15px;
}
.value-item h3{font-size:16px;font-weight:600;color:var(--ink)}
.value-item p{margin-top:6px;font-size:14px;line-height:1.7;color:var(--ink-2)}

/* Bento */
.bento{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:768px){.bento{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.bento{grid-template-columns:repeat(4,1fr);gap:20px}}
.bento-item{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;display:flex;flex-direction:column;gap:10px;transition:box-shadow .25s ease,border-color .25s ease,transform .25s ease;
}
.bento-item:hover{box-shadow:var(--shadow-2);border-color:#CFD6C8;transform:translateY(-2px)}
.bento-num{font-size:12px;font-weight:700;color:var(--brand);letter-spacing:.04em}
.bento-item h3{font-size:18px;font-weight:600;color:var(--ink);line-height:1.5}
.bento-item p{font-size:14px;line-height:1.75;color:var(--ink-2)}
.bento-item .link-arrow{margin-top:auto;padding-top:8px}
@media(min-width:1024px){
  .bento-main{grid-column:span 2;grid-row:span 2;padding:0;overflow:hidden;gap:0}
  .bento-main .bento-main-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
}
.bento-main .bento-main-img{order:-1;height:170px;overflow:hidden;background:var(--line)}
@media(min-width:1024px){.bento-main .bento-main-img{height:200px}}
.bento-main .bento-main-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.bento-main:hover .bento-main-img img{transform:scale(1.03)}

/* 使用场景 */
.scene-grid{display:grid;gap:16px}
@media(min-width:768px){.scene-grid{grid-template-columns:repeat(3,1fr);gap:20px}}
.scene-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;transition:box-shadow .25s ease,border-color .25s ease;
}
.scene-card:hover{box-shadow:var(--shadow-2);border-color:#CFD6C8}
@media(min-width:1024px){.scene-card.offset{margin-top:24px}}
.scene-step{
  display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:999px;
  background:var(--brand-deep);color:var(--accent);font-size:13px;font-weight:700;margin-bottom:14px;
}
.scene-card h3{font-size:18px;font-weight:600;color:var(--ink)}
.scene-card p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--ink-2)}
.scene-line{position:relative;padding-left:18px;margin-top:14px;font-size:13px;color:var(--brand);border-left:2px solid var(--accent)}

/* 数据 + 案例 */
.proof-grid{display:grid;gap:20px}
@media(min-width:1024px){.proof-grid{grid-template-columns:.85fr 1.15fr;gap:28px;align-items:start}}
.stat-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:8px 22px}
.stat-row{display:flex;align-items:flex-start;gap:16px;padding:20px 0}
.stat-row+.stat-row{border-top:1px solid var(--line)}
.stat-num{font-size:32px;font-weight:700;color:var(--brand-deep);line-height:1.1;min-width:96px}
@media(min-width:1024px){.stat-num{font-size:38px}}
.stat-num small{font-size:14px;font-weight:600;margin-left:2px;color:var(--brand)}
.stat-text b{display:block;font-size:15px;font-weight:600;color:var(--ink);margin-bottom:4px}
.stat-text span{font-size:13px;line-height:1.7;color:var(--ink-2)}
.case-grid{display:grid;gap:16px}
@media(min-width:640px){.case-grid{grid-template-columns:repeat(2,1fr)}}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:box-shadow .25s ease,border-color .25s ease;
  display:flex;flex-direction:column;
}
.card:hover{box-shadow:var(--shadow-2);border-color:#CFD6C8}
.card:hover .card-title{color:var(--brand-deep)}
.card-img{aspect-ratio:16/10;overflow:hidden;background:var(--line)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-img img{transform:scale(1.03)}
.card-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;transition:color .2s ease}
.card-text{font-size:14px;line-height:1.75;color:var(--ink-2)}
.card-meta{display:flex;align-items:center;gap:12px;margin-top:auto;font-size:12px;color:#8C9995;padding-top:6px}

/* 价格 */
.price-grid{display:grid;gap:16px}
@media(min-width:768px){.price-grid{grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}}
.price-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;display:flex;flex-direction:column;gap:14px;transition:box-shadow .25s ease,transform .25s ease;
}
.price-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.price-card.featured{background:var(--brand-deep);border-color:var(--brand-deep);color:rgba(255,255,255,.78);border-top:4px solid var(--accent)}
.price-card.featured h3,.price-card.featured .price-num{color:#fff}
.price-card.featured .price-note{color:rgba(255,255,255,.72)}
.price-flag{
  position:absolute;top:-12px;left:22px;height:24px;padding:0 12px;border-radius:999px;
  background:var(--accent);color:var(--brand-deep);font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;
}
.price-card h3{font-size:17px;font-weight:600}
.price-num{font-size:34px;font-weight:700;color:var(--brand-deep);line-height:1.1}
.price-num small{font-size:14px;font-weight:500;margin-left:4px;color:var(--ink-2)}
.price-note{font-size:13px;color:var(--ink-2);line-height:1.7}
.price-list{display:flex;flex-direction:column;gap:10px;font-size:14px;margin-top:4px}
.price-list li{display:flex;gap:9px;align-items:flex-start;line-height:1.65}
.price-list i{color:var(--brand);font-size:12px;margin-top:6px}
.price-card.featured .price-list i{color:var(--accent)}
.price-card .btn{margin-top:auto;width:100%}

.compare-wrap{margin-top:26px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.scroll-x{overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:thin}
.scroll-x::-webkit-scrollbar{height:6px}
.scroll-x::-webkit-scrollbar-thumb{background:#D6DBCE;border-radius:999px}
table.compare{width:100%;border-collapse:collapse;min-width:520px;font-size:14px}
table.compare th,table.compare td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line)}
table.compare thead th{background:#E8F3EE;color:var(--brand-deep);font-weight:600;font-size:13px}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare tbody th{font-weight:500;color:var(--ink);background:#FCFCF8;width:26%}
table.compare td{color:var(--ink-2)}
table.compare tbody tr:hover td,table.compare tbody tr:hover th{background:#FBFBF6}

/* CMS 列表 */
.post-grid{display:grid;gap:16px}
@media(min-width:768px){.post-grid{grid-template-columns:repeat(2,1fr);gap:20px}}
@media(min-width:1024px){.post-grid{grid-template-columns:repeat(3,1fr)}}
.post-grid .card.wide{grid-column:span 1}
@media(min-width:1024px){.post-grid .card.wide{grid-column:span 2}}
.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius);padding:32px 20px;text-align:center;
}
.empty-state i{font-size:26px;color:#B4BFB9}
.empty-state p{font-size:15px;color:var(--ink-2)}

/* FAQ */
.faq{max-width:880px;margin:0 auto;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:18px 0;transition:padding .2s ease}
.faq summary{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink);list-style:none;line-height:1.6;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:'+';flex:none;font-size:22px;line-height:1;color:var(--brand);transition:transform .2s ease;
}
.faq details[open] summary::after{content:'−'}
.faq details[open]{border-left:3px solid var(--accent);padding-left:14px}
.faq p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--ink-2)}

/* CTA */
.cta-band{
  background:var(--brand-deep);border-top:1px solid var(--accent);
  padding:44px 0;
}
@media(min-width:768px){.cta-band{padding:56px 0}}
.cta-inner{display:grid;gap:20px;align-items:center}
@media(min-width:1024px){.cta-inner{grid-template-columns:1.3fr .7fr;gap:32px}}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.35}
.cta-inner p{margin-top:10px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.7);max-width:38em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media(min-width:1024px){.cta-actions{justify-content:flex-end}}
.cta-band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.3);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--accent);color:var(--accent)}

/* 页脚 */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.72);padding:52px 0 0}
.footer-grid{display:grid;gap:32px}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.site-footer .footer-brand{display:flex;align-items:baseline;gap:8px;font-size:17px;font-weight:700;color:#fff}
.site-footer .footer-brand small{font-size:11px;font-weight:500;color:rgba(255,255,255,.6)}
.site-footer h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px}
.site-footer p{margin-top:14px;font-size:13px;line-height:1.85;color:rgba(255,255,255,.66);max-width:30em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s ease}
.footer-col a:hover{color:var(--accent)}
.footer-sub{display:flex;align-items:center;gap:8px;margin-top:18px;max-width:340px}
.footer-sub input{
  flex:1;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);color:#fff;padding:0 14px;font-size:14px;outline:none;
}
.footer-sub input::placeholder{color:rgba(255,255,255,.45)}
.footer-sub input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(216,255,74,.18)}
.footer-bottom{
  margin-top:40px;border-top:1px solid rgba(255,255,255,.12);padding:18px 0 24px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.72);border-bottom:1px dashed rgba(255,255,255,.25);transition:color .18s ease}
.footer-bottom a:hover{color:var(--accent)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* roulang page: article */
:root{
  --ink:#12181A;
  --ink-2:#4A5A5E;
  --line:#E3E6DD;
  --paper:#F7F6F0;
  --surface:#FFFFFF;
  --brand:#0E7A5F;
  --brand-deep:#0A3128;
  --accent:#D8FF4A;
  --accent-2:#FF7A45;
  --tint:#E8F3EE;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(18,24,26,.05);
  --shadow-2:0 10px 24px rgba(10,49,40,.10);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background-color:var(--paper);
  background-image:radial-gradient(rgba(18,24,26,.06) 1px,transparent 1px);
  background-size:22px 22px;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media(max-width:1024px){.container{padding:0 24px;}}
@media(max-width:640px){.container{padding:0 16px;}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;line-height:1;
  border:1px solid transparent;transition:all .18s ease;white-space:nowrap;
}
.btn-sm{height:36px;padding:0 16px;font-size:13px;}
.btn-lg{height:48px;padding:0 28px;}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand);}
.btn-primary:hover{background:var(--accent);color:var(--ink);border-color:var(--accent);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand-deep);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--brand-deep);color:var(--brand-deep);}
.btn-accent{background:var(--accent);color:var(--brand-deep);border-color:var(--accent);}
.btn-accent:hover{background:#fff;color:var(--brand-deep);border-color:#fff;}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);}
.btn-link i{transition:transform .18s ease;}
.btn-link:hover{color:var(--brand-deep);}
.btn-link:hover i{transform:translateX(3px);}
.btn:focus-visible,.icon-btn:focus-visible,.nav-link:focus-visible,.chip:focus-visible,
.hot-pill:focus-visible,.footer-col a:focus-visible,a:focus-visible{
  outline:2px solid rgba(14,122,95,.45);outline-offset:2px;border-radius:8px;
}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(10,49,40,.04);}
.header-top{background:#fff;border-bottom:1px solid var(--line);}
.nav-inner{display:flex;align-items:center;gap:18px;height:60px;position:relative;}
.brand{display:flex;flex-direction:column;line-height:1.15;font-size:17px;font-weight:700;color:var(--brand-deep);letter-spacing:0;}
.brand small{font-size:11px;font-weight:400;color:var(--ink-2);margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:10px;}
.nav-link{font-size:14px;font-weight:500;color:var(--ink-2);padding:8px 12px;border-radius:8px;transition:all .16s ease;}
.nav-link:hover{color:var(--brand-deep);background:#F1F4EE;}
.nav-link.active{color:var(--brand-deep);background:var(--tint);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.search-pill{display:flex;align-items:center;gap:8px;height:36px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:#F6F7F1;transition:all .16s ease;}
.search-pill i{font-size:12px;color:var(--ink-2);}
.search-pill input{width:176px;border:0;background:transparent;outline:none;font-size:13px;color:var(--ink);}
.search-pill input::placeholder{color:#8B999C;}
.search-pill:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(14,122,95,.16);}
.icon-btn{display:none;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);transition:all .16s ease;}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);}
.header-sub{background:var(--paper);}
.sub-inner{display:flex;align-items:center;gap:16px;height:46px;}
.channel-chips{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;}
.channel-chips::-webkit-scrollbar{display:none;}
.chip{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:13px;color:var(--ink-2);white-space:nowrap;transition:all .16s ease;}
.chip:hover{background:var(--brand-deep);color:#fff;border-color:var(--brand-deep);}
.chip.active{background:var(--tint);color:var(--brand-deep);border-color:#CFE6DA;}
.hotwords{display:flex;align-items:center;gap:8px;margin-left:auto;font-size:12px;color:var(--ink-2);overflow-x:auto;scrollbar-width:none;}
.hotwords::-webkit-scrollbar{display:none;}
.hotwords>span:first-child{font-weight:600;color:var(--brand-deep);white-space:nowrap;}
.hot-pill{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:12px;white-space:nowrap;transition:all .16s ease;}
.hot-pill:hover{background:var(--brand-deep);color:#fff;border-color:var(--brand-deep);}
@media(max-width:1024px){
  .search-pill input{width:130px;}
  .nav-links{margin-left:0;}
}
@media(max-width:900px){
  .nav-links{display:none;}
  .nav-links.open{
    display:flex;flex-direction:column;align-items:stretch;gap:4px;
    position:absolute;top:60px;left:-24px;right:-24px;
    background:#fff;border-bottom:1px solid var(--line);
    padding:12px 24px 16px;box-shadow:var(--shadow-2);
  }
  .nav-links.open .nav-link{padding:12px;}
  .icon-btn{display:inline-flex;}
  .search-pill{display:none;}
  .hotwords{display:none;}
  .sub-inner{height:44px;}
}
@media(max-width:520px){
  .brand{font-size:15px;}
  .brand small{font-size:10px;}
  .nav-actions .btn-sm{display:none;}
}

/* ---------- breadcrumb / article head ---------- */
.page-band{padding:26px 0 0;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb i{font-size:10px;color:#9BA9AB;}
.breadcrumb .current{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink);}
.channel-line{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:20px;}
.channel-tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-deep);background:var(--tint);border:1px solid #CFE6DA;border-radius:999px;height:26px;padding:0 12px;}
.channel-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);}
.channel-tools{display:flex;align-items:center;gap:8px;}
.tool-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:34px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:13px;color:var(--ink-2);transition:all .16s ease;}
.tool-btn:hover{border-color:var(--brand);color:var(--brand);}
.article-head{margin-top:18px;padding-bottom:22px;border-bottom:1px solid var(--line);}
.article-title{font-size:clamp(26px,3.4vw,40px);line-height:1.3;font-weight:700;color:var(--ink);max-width:900px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px;margin-top:16px;font-size:13px;color:var(--ink-2);}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.article-meta i{font-size:12px;color:var(--brand);}

/* ---------- article layout ---------- */
.article-wrap{display:grid;grid-template-columns:1fr 340px;gap:40px;padding:36px 0 0;align-items:start;}
.article-body{min-width:0;}
.prose-cn{font-size:16.5px;line-height:1.9;color:var(--ink-2);max-width:720px;}
.prose-cn>*+*{margin-top:1.4em;}
.prose-cn h2{position:relative;font-size:26px;line-height:1.45;font-weight:700;color:var(--ink);margin-top:2em;padding-left:14px;}
.prose-cn h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:3px;background:var(--accent);}
.prose-cn h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink);margin-top:1.6em;}
.prose-cn h4{font-size:16.5px;font-weight:600;color:var(--ink);margin-top:1.4em;}
.prose-cn p{color:var(--ink-2);}
.prose-cn a{color:var(--brand);border-bottom:1px solid rgba(14,122,95,.35);}
.prose-cn a:hover{color:var(--brand-deep);border-bottom-color:var(--brand-deep);}
.prose-cn strong{color:var(--ink);font-weight:600;}
.prose-cn ul{list-style:disc;padding-left:1.35em;}
.prose-cn ol{list-style:decimal;padding-left:1.45em;}
.prose-cn li+li{margin-top:.5em;}
.prose-cn li::marker{color:var(--brand);}
.prose-cn blockquote{margin:1.6em 0;padding:14px 20px;border-left:3px solid var(--brand);background:#F1F7F3;border-radius:0 12px 12px 0;color:var(--ink);}
.prose-cn blockquote p{color:var(--ink);}
.prose-cn table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;font-size:14px;border:1px solid var(--line);border-radius:12px;}
.prose-cn th{background:var(--tint);color:var(--brand-deep);font-weight:600;text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);white-space:nowrap;}
.prose-cn td{padding:10px 14px;border-top:1px solid var(--line);}
.prose-cn img{border-radius:14px;width:100%;background:#F1F4EE;}
.prose-cn figure{margin:1.8em 0;}
.prose-cn figcaption{margin-top:8px;font-size:13px;color:var(--ink-2);text-align:center;}
.prose-cn code{background:#F1F4EE;padding:2px 6px;border-radius:6px;font-size:.92em;color:var(--brand-deep);}
.prose-cn pre{background:var(--brand-deep);color:#E9F5EF;padding:16px 18px;border-radius:12px;overflow-x:auto;font-size:14px;line-height:1.7;}
.prose-cn pre code{background:transparent;color:inherit;padding:0;}
.prose-cn hr{border:0;border-top:1px solid var(--line);margin:2em 0;}

.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:260px;border:1px dashed var(--line);border-radius:var(--radius-card);background:#fff;text-align:center;padding:32px 20px;}
.empty-state i{font-size:26px;color:#B9C4C0;}
.empty-state p{font-size:15px;color:var(--ink-2);}
.empty-state h3{font-size:18px;color:var(--ink);}

/* ---------- sidebar ---------- */
.side-col{position:sticky;top:118px;display:flex;flex-direction:column;gap:18px;}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-1);}
.side-card h3{font-size:15px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:8px;padding-bottom:12px;border-bottom:1px solid var(--line);}
.side-card h3 i{color:var(--brand);font-size:13px;}
.side-list{margin-top:12px;display:flex;flex-direction:column;}
.side-list a{display:flex;gap:10px;align-items:flex-start;padding:9px 0;font-size:14px;color:var(--ink-2);border-bottom:1px solid #F0F2EA;transition:color .16s ease;}
.side-list a:last-child{border-bottom:0;}
.side-list a:hover{color:var(--brand-deep);}
.side-list a .idx{flex:none;width:20px;height:20px;border-radius:6px;background:var(--tint);color:var(--brand-deep);font-size:11px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;margin-top:3px;}
.side-note{font-size:14px;line-height:1.85;color:var(--ink-2);margin-top:12px;}
.side-cover{border-radius:12px;overflow:hidden;margin-top:14px;border:1px solid var(--line);}
.side-cover img{width:100%;height:150px;object-fit:cover;}
.side-cta{margin-top:14px;display:flex;flex-direction:column;gap:10px;}
.side-cta .btn{width:100%;}
.mini-faq{margin-top:6px;}
.mini-faq details{border-bottom:1px solid #F0F2EA;padding:10px 0;}
.mini-faq details:last-child{border-bottom:0;}
.mini-faq summary{list-style:none;display:flex;justify-content:space-between;gap:10px;font-size:14px;font-weight:600;color:var(--ink);cursor:pointer;}
.mini-faq summary::-webkit-details-marker{display:none;}
.mini-faq summary::after{content:"+";color:var(--brand);font-weight:600;}
.mini-faq details[open] summary::after{content:"−";}
.mini-faq p{font-size:13.5px;line-height:1.8;color:var(--ink-2);margin-top:8px;}

/* ---------- article footer blocks ---------- */
.article-foot{max-width:720px;}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:36px;}
.tag-row span{font-size:13px;color:var(--ink-2);margin-right:2px;}
.tag-row a{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--ink-2);transition:all .16s ease;}
.tag-row a:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;}
.prev-next{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px;}
.pn-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:16px 18px;transition:all .18s ease;}
.pn-card:hover{border-color:#C9D5CF;box-shadow:var(--shadow-2);transform:translateY(-1px);}
.pn-card small{font-size:12px;color:var(--brand);font-weight:600;}
.pn-card strong{display:block;margin-top:6px;font-size:15px;font-weight:600;color:var(--ink);}
.pn-card span{display:block;margin-top:4px;font-size:13px;color:var(--ink-2);}
.back-row{margin-top:22px;}

/* ---------- recommend ---------- */
.section{padding:64px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;}
.section-head p{font-size:14px;color:var(--ink-2);margin-top:6px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;display:flex;flex-direction:column;transition:all .18s ease;box-shadow:var(--shadow-1);}
.card:hover{border-color:#C9D5CF;box-shadow:var(--shadow-2);transform:translateY(-2px);}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#F1F4EE;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-badge{position:absolute;left:12px;top:12px;height:22px;padding:0 10px;border-radius:999px;background:rgba(255,255,255,.94);color:var(--brand-deep);font-size:12px;font-weight:600;display:inline-flex;align-items:center;}
.card-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1;}
.card-body h3{font-size:16.5px;line-height:1.5;font-weight:600;color:var(--ink);}
.card:hover .card-body h3{color:var(--brand-deep);}
.card-body p{font-size:13.5px;line-height:1.8;color:var(--ink-2);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:#8B999C;padding-top:6px;}
.card-foot i{color:var(--brand);font-size:12px;}

/* ---------- CTA ---------- */
.cta-band{margin-top:72px;background:var(--brand-deep);border-top:1px solid var(--accent);color:#fff;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:48px 0;}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.35;}
.cta-inner p{color:rgba(255,255,255,.72);font-size:14.5px;margin-top:10px;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.cta-actions .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35);}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff;}
@media(max-width:900px){
  .cta-inner{flex-direction:column;align-items:flex-start;padding:40px 0;}
}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.72);margin-top:0;padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:block;font-size:17px;font-weight:700;color:#fff;line-height:1.2;}
.footer-brand small{display:block;font-size:11px;font-weight:400;color:rgba(255,255,255,.6);margin-top:4px;}
.site-footer p{font-size:13.5px;line-height:1.85;margin-top:14px;max-width:360px;color:rgba(255,255,255,.72);}
.footer-sub{display:flex;gap:8px;margin-top:16px;max-width:340px;}
.footer-sub input{flex:1;height:38px;border-radius:10px;border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.06);color:#fff;padding:0 12px;font-size:13px;outline:none;transition:all .16s ease;}
.footer-sub input::placeholder{color:rgba(255,255,255,.45);}
.footer-sub input:focus{border-color:var(--accent);background:rgba(255,255,255,.1);box-shadow:0 0 0 3px rgba(216,255,74,.16);}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:13.5px;color:rgba(255,255,255,.72);transition:color .16s ease;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;margin-top:44px;padding:18px 0 22px;border-top:1px solid rgba(255,255,255,.14);font-size:12.5px;color:rgba(255,255,255,.6);}
.footer-bottom a{color:rgba(255,255,255,.8);border-bottom:1px solid rgba(255,255,255,.28);}
.footer-bottom a:hover{color:var(--accent);border-bottom-color:var(--accent);}
@media(max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
}
@media(max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}

/* ---------- responsive article ---------- */
@media(max-width:1024px){
  .article-wrap{grid-template-columns:1fr;gap:28px;}
  .side-col{position:static;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .prose-cn{max-width:100%;}
  .article-foot{max-width:100%;}
}
@media(max-width:640px){
  .grid-3{grid-template-columns:1fr;}
  .prev-next{grid-template-columns:1fr;}
  .page-band{padding-top:18px;}
  .section{padding-top:44px;}
  .article-title{font-size:24px;}
  .prose-cn{font-size:16px;line-height:1.85;}
  .prose-cn h2{font-size:21px;}
  .prose-cn h3{font-size:17.5px;}
  .channel-tools{display:none;}
}

/* roulang page: category1 */
:root{
  --ink:#12181A;
  --ink-2:#4A5A5E;
  --line:#E3E6DD;
  --paper:#F7F6F0;
  --surface:#FFFFFF;
  --brand:#0E7A5F;
  --brand-deep:#0A3128;
  --accent:#D8FF4A;
  --accent-2:#FF7A45;
  --soft:#E8F3EE;
  --radius:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(18,24,26,.05);
  --shadow-2:0 10px 24px rgba(10,49,40,.10);
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius)}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:1.1em}
h1,h2,h3,h4{color:var(--ink);line-height:1.3}
button{font-family:inherit}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 40px}
@media (max-width:1023px){.container{padding:0 24px}}
@media (max-width:639px){.container{padding:0 16px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-stuck{box-shadow:0 2px 10px rgba(18,24,26,.07)}
.header-top{border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:24px;height:60px;transition:height .2s ease}
.site-header.is-stuck .nav-inner{height:52px}
.brand{display:flex;flex-direction:column;line-height:1.2;color:var(--ink);font-weight:700;font-size:17px;white-space:nowrap}
.brand small{display:block;font-size:11.5px;font-weight:500;color:var(--ink-2);letter-spacing:0}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:12px;margin-right:auto}
.nav-link{
  position:relative;font-size:14px;font-weight:500;color:var(--ink-2);
  padding:8px 10px;border-radius:8px;transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--brand-deep);background:#F2F5EE}
.nav-link.active{color:var(--brand-deep);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:10px;right:10px;bottom:-1px;height:2px;
  background:var(--accent);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px}
.search-pill{
  display:flex;align-items:center;gap:8px;height:36px;padding:0 14px;
  background:#FBFBF6;border:1px solid var(--line);border-radius:999px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search-pill i{font-size:12.5px;color:var(--ink-2)}
.search-pill input{
  border:0;background:transparent;outline:none;font-size:13px;color:var(--ink);
  width:190px;height:100%;
}
.search-pill input::placeholder{color:#93A09B}
.search-pill:focus-within{border-color:var(--brand);box-shadow:0 0 0 2px rgba(14,122,95,.18)}
.icon-btn{
  display:none;align-items:center;justify-content:center;
  width:38px;height:38px;border:1px solid var(--line);border-radius:10px;
  background:var(--surface);color:var(--ink);cursor:pointer;transition:.18s ease;
}
.icon-btn:hover{border-color:var(--brand-deep);color:var(--brand-deep)}
.header-sub{background:#FBFBF6}
.sub-inner{display:flex;align-items:center;gap:20px;height:46px;overflow:hidden}
.channel-chips{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none}
.channel-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;white-space:nowrap;
  font-size:13px;font-weight:500;color:var(--ink-2);
  padding:5px 13px;border-radius:999px;background:var(--surface);
  border:1px solid var(--line);transition:.18s ease;
}
.chip:hover{background:var(--brand-deep);color:#fff;border-color:var(--brand-deep)}
.chip.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.hotwords{display:flex;align-items:center;gap:8px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.hotwords::-webkit-scrollbar{display:none}
.hotwords > span:first-child{font-size:12px;color:#8A9791;white-space:nowrap}
.hot-pill{
  white-space:nowrap;font-size:12px;color:var(--ink-2);padding:3px 10px;
  border:1px solid var(--line);border-radius:999px;background:var(--surface);
  transition:.18s ease;cursor:default;
}
.hot-pill:hover{background:var(--brand-deep);color:#fff;border-color:var(--brand-deep)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .16s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(14,122,95,.30)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--accent);color:var(--ink);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand-deep);color:var(--brand-deep)}
.btn-sm{height:36px;padding:0 16px;font-size:13px;border-radius:9px}
.btn-lg{height:48px;padding:0 28px}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--brand-deep);transition:.18s ease;
}
.btn-link i{transition:transform .18s ease}
.btn-link:hover i{transform:translateX(3px)}
.btn-link:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(14,122,95,.25);border-radius:6px}

/* ============ 页头 ============ */
.page-hero{padding:56px 0 72px;position:relative;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(18,24,26,.08) 1px,transparent 1px);
  background-size:22px 22px;opacity:.55;pointer-events:none;
  -webkit-mask-image:linear-gradient(to bottom,transparent,#000 30%,#000 60%,transparent);
          mask-image:linear-gradient(to bottom,transparent,#000 30%,#000 60%,transparent);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:#8A9791;margin-bottom:20px}
.crumb a:hover{color:var(--brand-deep)}
.crumb i{font-size:10px;opacity:.7}
.crumb .current{color:var(--ink-2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  color:var(--brand-deep);background:var(--soft);border:1px solid #D3E7DE;
  padding:5px 12px;border-radius:999px;margin-bottom:18px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:999px;background:var(--brand)}
.page-hero h1{font-size:clamp(28px,3.6vw,44px);font-weight:700;line-height:1.24;color:var(--ink);letter-spacing:0}
.lead{margin-top:18px;font-size:16.5px;line-height:1.9;color:var(--ink-2);max-width:56ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-facts{display:flex;flex-wrap:wrap;gap:24px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line)}
.hero-facts div{min-width:120px}
.hero-facts strong{display:block;font-size:22px;font-weight:700;color:var(--brand-deep);line-height:1.2}
.hero-facts span{font-size:13px;color:#7E8B85}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.hero-figure figcaption{
  margin-top:12px;font-size:12.5px;color:#8A9791;text-align:center;
}
.hero-tag{
  position:absolute;left:16px;bottom:16px;background:rgba(10,49,40,.88);color:#fff;
  font-size:12.5px;padding:6px 12px;border-radius:999px;border:1px solid rgba(216,255,74,.4);
}

/* ============ 通用板块 ============ */
.section{padding:72px 0}
.section-tight{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head h2{font-size:clamp(24px,2.6vw,31px);font-weight:700;color:var(--ink)}
.section-head p{margin-top:10px;font-size:14.5px;color:#7E8B85;max-width:62ch}
.section-head .btn-link{flex:none;margin-bottom:6px}
.divider{height:1px;background:var(--line)}

/* ============ 要点网格 ============ */
.points-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.point-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 26px 24px;box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.point-card:nth-child(even){margin-top:24px}
.point-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#CFD8CD}
.point-num{
  font-size:12.5px;font-weight:700;color:var(--brand);letter-spacing:.06em;
  display:inline-block;padding-bottom:10px;
}
.point-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.point-card p{font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ============ 图文交替 ============ */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding:56px 0;
}
.split + .split{border-top:1px solid var(--line)}
.split-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius);
  border:1px solid var(--line);
}
.split-media figcaption{font-size:12.5px;color:#8A9791;margin-top:10px;text-align:center}
.split-body h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;margin-bottom:14px}
.split-body p{font-size:15.5px;color:var(--ink-2)}
.tick-list{list-style:none;padding:0;margin:20px 0 0}
.tick-list li{position:relative;padding-left:26px;font-size:15px;color:var(--ink-2);margin-bottom:12px}
.tick-list li::before{
  content:"";
  position:absolute;left:0;top:10px;width:12px;height:12px;border-radius:999px;
  background:var(--soft);border:1px solid #C9E2D7;
}
.tick-list li::after{
  content:"";position:absolute;left:3px;top:13.5px;width:5px;height:5px;border-radius:999px;
  background:var(--brand);
}
.split.reverse .split-media{order:2}
.split.reverse .split-body{order:1}

/* ============ 对照表 ============ */
.table-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.table-scroll{overflow-x:auto}
.spec-table{width:100%;border-collapse:collapse;min-width:680px;text-align:left}
.spec-table thead th{
  background:var(--soft);color:var(--brand-deep);font-size:13.5px;font-weight:600;
  padding:14px 20px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.spec-table tbody td{
  padding:16px 20px;font-size:14.5px;color:var(--ink-2);
  border-bottom:1px solid var(--line);vertical-align:top;line-height:1.75;
}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody tr:hover{background:#FBFBF6}
.spec-table td:first-child{color:var(--ink);font-weight:600;width:30%}
.table-note{padding:14px 20px;font-size:12.5px;color:#8A9791;border-top:1px solid var(--line);background:#FBFBF6}

/* ============ FAQ ============ */
.faq-list{max-width:880px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:20px 16px;font-size:16px;font-weight:600;color:var(--ink);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
  border-left:3px solid transparent;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#FBFBF6;color:var(--brand-deep)}
.faq-item summary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(14,122,95,.20);border-radius:8px}
.faq-item summary::after{
  content:"+";font-size:20px;font-weight:400;color:var(--brand);line-height:1;flex:none;
}
.faq-item[open] summary{border-left-color:var(--accent);color:var(--brand-deep)}
.faq-item[open] summary::after{content:"−"}
.faq-answer{padding:0 16px 22px 19px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:70ch}

/* ============ 相关入口 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.related-card{
  display:flex;flex-direction:column;gap:10px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#CFD8CD}
.related-card .rc-icon{
  width:40px;height:40px;border-radius:10px;background:var(--soft);color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;font-size:15px;
}
.related-card h3{font-size:17px;font-weight:600}
.related-card p{font-size:14px;color:var(--ink-2);line-height:1.75}
.related-card .btn-link{margin-top:auto;padding-top:6px;font-size:13.5px}
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:500;background:var(--soft);color:var(--brand-deep);
}
.badge-hot{background:var(--accent-2);color:#fff}

/* ============ CTA 通栏 ============ */
.cta-band{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border-top:1px solid var(--accent);
  background-image:linear-gradient(100deg,rgba(10,49,40,.96),rgba(10,49,40,.82)),url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;
  padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,28px);font-weight:700;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.74);font-size:15px;max-width:56ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-band .btn-primary:hover{background:var(--accent);color:var(--ink)}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.cta-band .btn-ghost:hover{border-color:var(--accent);color:var(--accent)}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.72);margin-top:72px;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand{display:block;color:#fff;font-size:19px;font-weight:700;line-height:1.3}
.footer-brand small{display:block;font-size:11.5px;font-weight:500;color:rgba(255,255,255,.55);margin-top:2px}
.footer-grid p{font-size:14px;line-height:1.85;margin-top:16px;max-width:38ch}
.footer-sub{display:flex;gap:10px;margin-top:20px}
.footer-sub input{
  flex:1;min-width:0;height:38px;padding:0 14px;border-radius:9px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.20);
  color:#fff;font-size:13px;outline:none;transition:.18s ease;
}
.footer-sub input::placeholder{color:rgba(255,255,255,.45)}
.footer-sub input:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(216,255,74,.22)}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:13.5px;color:rgba(255,255,255,.72);transition:color .18s ease}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.75)}
.footer-bottom a:hover{color:var(--accent)}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-links{
    display:none;position:absolute;left:0;right:0;top:100%;
    background:var(--surface);border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;padding:12px 24px 18px;
    box-shadow:0 12px 24px rgba(10,49,40,.10);
  }
  body.nav-open .nav-links{display:flex}
  .nav-link{padding:12px 4px;border-radius:0;border-bottom:1px solid var(--line)}
  .nav-link.active::after{left:0;right:auto;width:40px;bottom:-1px}
  .nav-actions .btn{display:none}
  .icon-btn{display:inline-flex}
  .search-pill{display:none}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-figure{order:-1}
  .page-hero{padding:36px 0 48px}
  .points-grid{grid-template-columns:1fr}
  .point-card:nth-child(even){margin-top:0}
  .split{grid-template-columns:1fr;gap:28px;padding:40px 0}
  .split.reverse .split-media{order:0}
  .related-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:36px 28px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .section-tight{padding:44px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px}
  .related-grid{grid-template-columns:1fr}
  .hotwords{display:none}
  .sub-inner{height:44px}
  .hero-facts{gap:18px}
  .hero-facts strong{font-size:19px}
  .cta-band{padding:30px 22px}
  .cta-actions .btn{width:100%}
}
@media (max-width:520px){
  .brand{font-size:15.5px}
  .lead{font-size:15.5px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .point-card{padding:22px 20px}
  .faq-item summary{padding:16px 12px;font-size:15px}
  .faq-answer{padding:0 12px 20px 15px;font-size:14.5px}
}

/* roulang page: category2 */
:root{
    --ink:#12181A;
    --ink-2:#4A5A5E;
    --line:#E3E6DD;
    --paper:#F7F6F0;
    --surface:#FFFFFF;
    --brand:#0E7A5F;
    --brand-deep:#0A3128;
    --accent:#D8FF4A;
    --accent-2:#FF7A45;
    --soft:#E8F3EE;
    --radius:14px;
    --radius-btn:10px;
    --shadow-1:0 1px 2px rgba(18,24,26,.05);
    --shadow-2:0 10px 24px rgba(10,49,40,.10);
    --font-cn:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.85;
    color:var(--ink-2);
    background:var(--paper);
    overflow-x:hidden;
  }
  h1,h2,h3,h4,h5,p,figure,ul,ol,dl{margin:0;}
  ul,ol{padding:0;list-style:none;}
  a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
  img{display:block;max-width:100%;height:auto;}
  button{font-family:inherit;}
  [id]{scroll-margin-top:130px;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

  ::-webkit-scrollbar{height:8px;width:8px;}
  ::-webkit-scrollbar-thumb{background:#CBD5CC;border-radius:999px;}
  ::-webkit-scrollbar-track{background:transparent;}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:14px;font-weight:600;line-height:1;border:1px solid transparent;
    cursor:pointer;transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
  }
  .btn:focus-visible{outline:2px solid rgba(14,122,95,.35);outline-offset:2px;}
  .btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
  .btn-primary:hover{background:var(--accent);color:var(--ink);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);}
  .btn-ghost:hover{border-color:var(--brand-deep);color:var(--brand-deep);transform:translateY(-1px);}
  .btn-sm{height:36px;padding:0 16px;font-size:13px;border-radius:9px;}
  .btn-lg{height:48px;padding:0 28px;font-size:15px;}
  .btn-accent{background:var(--accent);color:var(--ink);}
  .btn-accent:hover{background:#fff;color:var(--brand-deep);transform:translateY(-1px);}
  .btn-outline-light{background:transparent;border-color:rgba(255,255,255,.32);color:#fff;}
  .btn-outline-light:hover{background:#fff;border-color:#fff;color:var(--brand-deep);transform:translateY(-1px);}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-deep);}
  .link-arrow i{transition:transform .18s ease;}
  .link-arrow:hover{color:var(--brand);}
  .link-arrow:hover i{transform:translateX(3px);}
  .link-arrow:focus-visible{outline:2px solid rgba(14,122,95,.35);outline-offset:3px;border-radius:4px;}

  /* ============ 顶部导航 ============ */
  .site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .2s ease;}
  .site-header.is-stuck{box-shadow:0 6px 18px rgba(18,24,26,.07);}
  .header-top{position:relative;background:var(--surface);}
  .nav-inner{display:flex;align-items:center;gap:20px;height:60px;}
  .brand{
    display:inline-flex;align-items:baseline;gap:8px;flex:0 0 auto;
    font-size:18px;font-weight:700;color:var(--brand-deep);line-height:1.2;white-space:nowrap;
  }
  .brand small{font-size:11px;font-weight:500;color:var(--ink-2);line-height:1.2;}
  .brand:hover{color:var(--brand);}
  .nav-links{display:flex;align-items:center;gap:4px;margin-left:10px;}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;
    padding:8px 12px;border-radius:8px;
    font-size:14px;font-weight:500;color:var(--ink-2);white-space:nowrap;
  }
  .nav-link:hover{color:var(--brand-deep);background:#F1F6F3;}
  .nav-link.active{color:var(--brand-deep);font-weight:600;}
  .nav-link.active::after{content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;background:var(--accent);border-radius:2px;}
  .nav-link:focus-visible{outline:2px solid rgba(14,122,95,.35);outline-offset:2px;}
  .nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}

  .search-pill{
    display:flex;align-items:center;gap:8px;height:36px;padding:0 14px;
    border:1px solid var(--line);border-radius:999px;background:#fff;
    transition:border-color .18s ease,box-shadow .18s ease;
  }
  .search-pill i{font-size:12px;color:var(--ink-2);}
  .search-pill input{
    width:190px;border:0;outline:none;background:transparent;
    font-size:13px;color:var(--ink);font-family:inherit;
  }
  .search-pill input::placeholder{color:#96A29C;}
  .search-pill:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,122,95,.16);}

  .icon-btn{
    display:none;align-items:center;justify-content:center;
    width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
    background:#fff;color:var(--ink);cursor:pointer;
    transition:border-color .18s ease,color .18s ease,background-color .18s ease;
  }
  .icon-btn:hover{border-color:var(--brand);color:var(--brand);}
  .icon-btn:focus-visible{outline:2px solid rgba(14,122,95,.35);outline-offset:2px;}

  .header-sub{background:#FBFBF6;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .sub-inner{display:flex;align-items:center;gap:18px;height:46px;overflow:hidden;}
  .channel-chips{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
  .chip{
    display:inline-flex;align-items:center;height:30px;padding:0 14px;
    border:1px solid var(--line);border-radius:999px;background:#fff;
    font-size:13px;color:var(--ink-2);white-space:nowrap;
  }
  .chip:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;}
  .chip.active{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;font-weight:600;}
  .chip:focus-visible{outline:2px solid rgba(14,122,95,.35);outline-offset:2px;}
  .hotwords{display:flex;align-items:center;gap:8px;margin-left:auto;overflow-x:auto;scrollbar-width:none;}
  .hotwords::-webkit-scrollbar{display:none;}
  .hotwords > span:first-child{font-size:12px;color:#8A9690;flex:0 0 auto;}
  .hot-pill{
    display:inline-flex;align-items:center;flex:0 0 auto;height:26px;padding:0 12px;
    border:1px solid var(--line);border-radius:999px;background:#fff;
    font-size:12px;color:var(--ink-2);cursor:default;
  }
  .hot-pill:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;}

  /* ============ 通用区块 ============ */
  .section{padding:56px 0;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;font-weight:600;color:var(--brand);margin-bottom:10px;
  }
  .eyebrow::before{content:"";display:inline-block;width:16px;height:2px;background:var(--brand);border-radius:2px;}

  .badge{
    display:inline-flex;align-items:center;height:22px;padding:0 10px;
    border-radius:999px;background:var(--soft);color:var(--brand-deep);
    font-size:12px;font-weight:600;white-space:nowrap;
  }
  .badge-hot{background:var(--accent-2);color:#fff;}

  /* ============ 分类页头部 ============ */
  .page-hero{position:relative;padding:34px 0 46px;overflow:hidden;background:var(--paper);}
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background-image:radial-gradient(rgba(10,49,40,.10) 1px, transparent 1px);
    background-size:22px 22px;opacity:.55;pointer-events:none;
    mask-image:linear-gradient(to bottom, rgba(0,0,0,.7), transparent 78%);
    -webkit-mask-image:linear-gradient(to bottom, rgba(0,0,0,.7), transparent 78%);
  }
  .hero-grid{position:relative;display:grid;grid-template-columns:1.12fr .88fr;gap:40px;align-items:center;}
  .breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-2);margin-bottom:16px;}
  .breadcrumb a{color:var(--ink-2);}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{color:#B9C2BC;}
  .breadcrumb .current{color:var(--ink);font-weight:600;}
  .page-hero h1{
    font-size:clamp(28px,3.8vw,42px);line-height:1.28;font-weight:700;color:var(--ink);
    max-width:20em;
  }
  .hero-lead{margin-top:16px;font-size:16px;line-height:1.85;color:var(--ink-2);max-width:40em;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}
  .hero-figure{
    position:relative;border:1px solid var(--line);border-radius:var(--radius);
    overflow:hidden;background:#EDEFE8;box-shadow:var(--shadow-1);
    aspect-ratio:16 / 11;
  }
  .hero-figure img{width:100%;height:100%;object-fit:cover;}
  .hero-figure .coord{
    position:absolute;left:14px;bottom:12px;display:inline-flex;align-items:center;gap:6px;
    padding:4px 10px;border-radius:999px;background:rgba(10,49,40,.78);
    font-size:11px;color:#fff;
  }
  .hero-figure .coord::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}

  .strip{
    display:grid;grid-template-columns:repeat(3,1fr);
    margin-top:30px;padding-top:22px;border-top:1px solid var(--line);
  }
  .strip-item{display:flex;gap:10px;align-items:flex-start;padding-right:22px;}
  .strip-item + .strip-item{border-left:1px solid var(--line);padding-left:22px;}
  .strip-item i{color:var(--brand);font-size:14px;margin-top:5px;}
  .strip-item strong{display:block;font-size:14px;font-weight:600;color:var(--ink);line-height:1.5;}
  .strip-item span{display:block;font-size:13px;line-height:1.7;color:var(--ink-2);}

  /* ============ 双栏布局 ============ */
  .layout{
    display:grid;grid-template-columns:250px minmax(0,1fr);gap:32px;
    align-items:start;padding-bottom:64px;
  }
  .side-nav{
    position:sticky;top:120px;
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
    padding:18px 14px;box-shadow:var(--shadow-1);
  }
  .side-nav h2{font-size:13px;font-weight:600;color:var(--ink);padding:0 10px 10px;border-bottom:1px solid var(--line);}
  .side-nav ol{display:flex;flex-direction:column;gap:2px;margin-top:10px;}
  .side-nav a{
    display:block;padding:9px 10px 9px 12px;
    border-left:2px solid transparent;border-radius:0 8px 8px 0;
    font-size:14px;color:var(--ink-2);
  }
  .side-nav a:hover{background:#F1F6F3;border-left-color:var(--accent);color:var(--brand-deep);}
  .side-nav a:focus-visible{outline:2px solid rgba(14,122,95,.35);outline-offset:1px;}
  .side-nav .side-note{margin-top:14px;padding:12px 10px 4px;border-top:1px solid var(--line);font-size:12px;line-height:1.7;color:#81908A;}

  .content-flow{display:flex;flex-direction:column;gap:22px;min-width:0;}
  .panel{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
    padding:30px;box-shadow:var(--shadow-1);
  }
  .panel-title{font-size:26px;line-height:1.35;font-weight:700;color:var(--ink);}
  .panel-sub{margin-top:8px;font-size:14px;line-height:1.8;color:var(--ink-2);max-width:62ch;}

  .mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px;}
  .mini{
    border:1px solid var(--line);border-radius:12px;background:#FCFCF8;
    padding:18px 16px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .mini:hover{transform:translateY(-2px);border-color:#C9D8CF;box-shadow:var(--shadow-2);}
  .mini .num{font-size:12px;font-weight:700;color:var(--brand);letter-spacing:.02em;}
  .mini h3{margin:6px 0 6px;font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;}
  .mini p{font-size:13.5px;line-height:1.78;color:var(--ink-2);}

  .split{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center;margin-top:22px;}
  .split-media{
    border:1px solid var(--line);border-radius:12px;overflow:hidden;
    aspect-ratio:16 / 10;background:#EDEFE8;
  }
  .split-media img{width:100%;height:100%;object-fit:cover;}
  .split-rev .split-media{order:-1;}

  .flow-steps{counter-reset:step;margin-top:18px;display:flex;flex-direction:column;}
  .flow-steps li{
    position:relative;padding:14px 0 14px 46px;border-bottom:1px dashed var(--line);
    font-size:14.5px;line-height:1.8;color:var(--ink-2);
  }
  .flow-steps li:last-child{border-bottom:0;}
  .flow-steps li::before{
    counter-increment:step;content:counter(step,decimal-leading-zero);
    position:absolute;left:0;top:14px;
    display:inline-flex;align-items:center;justify-content:center;
    width:30px;height:30px;border-radius:9px;
    background:var(--soft);color:var(--brand-deep);font-size:12px;font-weight:700;
  }
  .flow-steps li strong{color:var(--ink);font-weight:600;}

  .check-list{margin-top:18px;}
  .check-list li{
    display:flex;gap:10px;align-items:flex-start;
    padding:13px 0;border-bottom:1px dashed var(--line);
    font-size:14.5px;line-height:1.8;color:var(--ink-2);
  }
  .check-list li:last-child{border-bottom:0;}
  .check-list i{color:var(--brand);font-size:13px;margin-top:7px;flex:0 0 auto;}
  .check-list strong{color:var(--ink);font-weight:600;}

  .table-wrap{margin-top:20px;border:1px solid var(--line);border-radius:12px;overflow-x:auto;}
  .data-table{width:100%;border-collapse:collapse;min-width:660px;font-size:14px;}
  .data-table th{
    background:var(--soft);color:var(--brand-deep);font-weight:600;text-align:left;
    padding:12px 16px;white-space:nowrap;font-size:13.5px;
  }
  .data-table td{padding:12px 16px;border-top:1px solid var(--line);color:var(--ink-2);vertical-align:top;line-height:1.75;}
  .data-table tbody tr:hover{background:#FBFBF6;}
  .data-table td:first-child{color:var(--ink);font-weight:600;white-space:nowrap;}

  .faq{margin-top:14px;}
  .faq details{border-bottom:1px solid var(--line);}
  .faq details:last-child{border-bottom:0;}
  .faq summary{
    list-style:none;cursor:pointer;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:16px 0 16px 14px;border-left:3px solid transparent;
    font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
    transition:color .18s ease,border-color .18s ease,background-color .18s ease;
  }
  .faq summary::-webkit-details-marker{display:none;}
  .faq summary::after{
    content:"+";flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
    width:26px;height:26px;border-radius:50%;background:var(--soft);
    color:var(--brand-deep);font-size:16px;font-weight:600;line-height:1;
  }
  .faq summary:hover{color:var(--brand-deep);background:#FBFBF6;}
  .faq summary:focus-visible{outline:2px solid rgba(14,122,95,.35);outline-offset:2px;}
  .faq details[open] summary{border-left-color:var(--accent);color:var(--brand-deep);}
  .faq details[open] summary::after{content:"−";}
  .faq .answer{padding:0 0 18px 14px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:72ch;}

  .rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:20px;}
  .rel-card{
    display:flex;flex-direction:column;gap:8px;
    border:1px solid var(--line);border-radius:12px;background:#fff;
    padding:18px 16px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .rel-card:hover{transform:translateY(-3px);border-color:#C9D8CF;box-shadow:var(--shadow-2);}
  .rel-card:focus-visible{outline:2px solid rgba(14,122,95,.35);outline-offset:2px;}
  .rel-card h3{font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;}
  .rel-card:hover h3{color:var(--brand-deep);}
  .rel-card p{font-size:13.5px;line-height:1.75;color:var(--ink-2);}
  .rel-card .link-arrow{font-size:13px;margin-top:auto;}

  /* ============ 深色 CTA ============ */
  .cta-wrap{padding:0 0 72px;}
  .cta-band{
    position:relative;overflow:hidden;
    display:flex;align-items:center;justify-content:space-between;gap:28px;
    background:var(--brand-deep);border-radius:var(--radius);
    border-top:3px solid var(--accent);
    padding:40px;
  }
  .cta-band::after{
    content:"";position:absolute;right:-40px;top:-40px;width:220px;height:220px;
    border:1px solid rgba(216,255,74,.22);border-radius:50%;pointer-events:none;
  }
  .cta-band h2{font-size:26px;line-height:1.4;font-weight:700;color:#fff;}
  .cta-band p{margin-top:8px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.72);max-width:52ch;}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--brand-deep);color:rgba(255,255,255,.72);padding:56px 0 0;}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding-bottom:36px;}
  .footer-brand{display:block;color:#fff;font-size:17px;font-weight:700;line-height:1.3;margin-bottom:12px;}
  .footer-brand small{display:block;margin-top:6px;font-size:11px;font-weight:500;color:rgba(255,255,255,.55);}
  .footer-grid p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.72);max-width:34ch;}
  .footer-sub{display:flex;gap:8px;margin-top:16px;}
  .footer-sub input{
    flex:1 1 auto;min-width:0;height:38px;padding:0 12px;
    border:1px solid rgba(255,255,255,.18);border-radius:10px;
    background:rgba(255,255,255,.06);color:#fff;font-size:13px;font-family:inherit;outline:none;
    transition:border-color .18s ease,box-shadow .18s ease;
  }
  .footer-sub input::placeholder{color:rgba(255,255,255,.45);}
  .footer-sub input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(216,255,74,.16);}
  .footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:12px;}
  .footer-col li{margin-bottom:9px;font-size:13.5px;}
  .footer-col a{color:rgba(255,255,255,.72);}
  .footer-col a:hover{color:var(--accent);}
  .footer-col a:focus-visible{outline:2px solid rgba(216,255,74,.6);outline-offset:2px;border-radius:3px;}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
    padding:18px 0 22px;border-top:1px solid rgba(255,255,255,.12);
    font-size:12.5px;color:rgba(255,255,255,.55);
  }
  .footer-bottom a{color:rgba(255,255,255,.78);}
  .footer-bottom a:hover{color:var(--accent);}

  /* 正文排版补充 */
  .prose-cn p{margin-bottom:1.15em;font-size:15.5px;line-height:1.9;color:var(--ink-2);}
  .prose-cn p:last-child{margin-bottom:0;}
  .prose-cn strong{color:var(--ink);}

  /* ============ 响应式 ============ */
  @media (max-width:1024px){
    .nav-links{display:none;}
    .search-pill{display:none;}
    .nav-toggle{display:inline-flex;}
    .site-header.drawer-open .nav-links{
      display:flex;flex-direction:column;align-items:stretch;gap:4px;
      position:absolute;left:0;right:0;top:100%;margin-left:0;
      background:#fff;padding:12px 16px 18px;
      border-bottom:1px solid var(--line);
      box-shadow:0 18px 30px rgba(18,24,26,.12);
    }
    .site-header.drawer-open .nav-link{padding:12px 14px;font-size:15px;border-radius:8px;}
    .nav-link.active::after{display:none;}
    .nav-link.active{background:#F1F6F3;}
    .layout{grid-template-columns:1fr;gap:20px;}
    .side-nav{position:static;padding:14px;}
    .side-nav ol{flex-direction:row;gap:8px;overflow-x:auto;margin-top:10px;padding-bottom:4px;}
    .side-nav ol::-webkit-scrollbar{height:6px;}
    .side-nav a{
      white-space:nowrap;border-left:0;border:1px solid var(--line);border-radius:999px;
      padding:7px 14px;font-size:13px;background:#fff;
    }
    .side-nav a:hover{background:var(--brand-deep);color:#fff;border-color:var(--brand-deep);}
    .side-nav .side-note{display:none;}
    .hero-grid{grid-template-columns:1fr;gap:26px;}
    .hero-figure{max-width:560px;}
  }

  @media (max-width:900px){
    .mini-grid{grid-template-columns:1fr;}
    .split{grid-template-columns:1fr;gap:20px;}
    .split-rev .split-media{order:0;}
    .rel-grid{grid-template-columns:1fr;}
    .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  }

  @media (max-width:768px){
    .container{padding:0 18px;}
    .nav-inner{height:56px;gap:12px;}
    .brand{font-size:16px;}
    .brand small{display:none;}
    .header-sub .sub-inner{height:auto;padding:9px 0;gap:10px;overflow-x:auto;}
    .header-sub .hotwords{display:none;}
    .page-hero{padding:24px 0 34px;}
    .panel{padding:22px 18px;}
    .panel-title{font-size:22px;}
    .strip{grid-template-columns:1fr;}
    .strip-item{padding:0 0 14px;}
    .strip-item + .strip-item{border-left:0;border-top:1px solid var(--line);padding:14px 0 0;}
    .cta-band h2{font-size:22px;}
    .section{padding:40px 0;}
    .cta-wrap{padding-bottom:52px;}
  }

  @media (max-width:520px){
    .container{padding:0 16px;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1 1 auto;}
    .hero-tags .badge{font-size:11px;}
    .flow-steps li{padding-left:40px;font-size:14px;}
  }