/* roulang page: index */
:root{
  --c-primary:#0E7A72;
  --c-primary-dark:#095E58;
  --c-primary-light:#D8EBE7;
  --c-accent:#C8703C;
  --c-bg:#FAF8F4;
  --c-bg-alt:#F1EFE9;
  --c-ink:#1E2A28;
  --c-muted:#5A6B68;
  --c-line:#E2DED5;
  --c-dark:#12332F;
  --c-white:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(18,42,40,.06), 0 8px 24px -12px rgba(18,42,40,.14);
  --sh-hover:0 2px 4px rgba(18,42,40,.08), 0 16px 36px -16px rgba(18,42,40,.22);
  --max:1200px;
  --gap:24px;
  --pad-section:104px;
  --ease:.22s ease;
}
*,*::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-ink);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB",sans-serif;
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none;}
input,textarea,select{font:inherit;}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;}
:focus-visible{outline:2px solid rgba(14,122,114,.45);outline-offset:3px;border-radius:6px;}

/* ===== 顶部信息条 ===== */
.topbar{background:var(--c-dark);color:#E8F1EF;font-size:12.5px;line-height:1.7;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;}
.topbar-note{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.topbar-note .dot{width:5px;height:5px;border-radius:50%;background:#5FBDB1;display:inline-block;}
.topbar-host{letter-spacing:.3px;color:#BFD6D2;}
.topbar-links{display:flex;align-items:center;gap:14px;}
.topbar-links a{color:#E8F1EF;transition:color var(--ease);}
.topbar-links a:hover{color:#8FD3C9;}
.topbar-sep{width:1px;height:12px;background:rgba(232,241,239,.28);display:inline-block;}

/* ===== 主导航 ===== */
.site-header{position:sticky;top:0;z-index:80;background:rgba(250,248,244,.97);border-bottom:1px solid var(--c-line);transition:box-shadow var(--ease),background var(--ease);}
.site-header.is-stuck{box-shadow:var(--sh-card);background:rgba(250,248,244,.99);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height var(--ease);}
.site-header.is-stuck .nav-wrap{height:60px;}
.logo{display:flex;align-items:center;gap:10px;}
.logo-mark{width:38px;height:38px;border-radius:12px;background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;flex:0 0 auto;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:17px;font-weight:700;color:var(--c-ink);}
.logo-sub{font-size:11.5px;color:var(--c-muted);letter-spacing:.4px;}
.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{position:relative;display:inline-block;padding:10px 14px;border-radius:var(--r-btn);font-size:15px;color:var(--c-muted);transition:color var(--ease),background var(--ease);}
.nav-link:hover{color:var(--c-primary-dark);background:var(--c-primary-light);}
.nav-link.active{color:var(--c-primary-dark);font-weight:600;}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;background:var(--c-primary);}
.nav-cta{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:var(--r-btn);background:var(--c-primary);color:#fff;font-size:14.5px;font-weight:600;transition:background var(--ease),transform var(--ease),box-shadow var(--ease);}
.nav-cta:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-card);}
.nav-cta:active{transform:translateY(0);}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--c-line);border-radius:var(--r-btn);align-items:center;justify-content:center;background:#fff;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.drawer{position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;background:var(--c-bg);z-index:120;transform:translateX(105%);transition:transform .28s ease;padding:22px 20px 28px;display:flex;flex-direction:column;gap:22px;box-shadow:-12px 0 40px rgba(18,42,40,.18);overflow-y:auto;}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-title{font-size:12.5px;color:var(--c-muted);}
.drawer-close{width:36px;height:36px;border-radius:50%;background:var(--c-primary-light);color:var(--c-primary-dark);font-size:18px;display:flex;align-items:center;justify-content:center;}
.drawer-group{display:flex;flex-direction:column;gap:6px;}
.drawer-group .group-label{font-size:12px;color:var(--c-muted);margin-bottom:2px;}
.drawer-link{display:block;padding:12px 14px;border-radius:var(--r-btn);background:#fff;border:1px solid var(--c-line);font-size:15px;transition:border-color var(--ease),color var(--ease);}
.drawer-link:hover,.drawer-link.active{border-color:var(--c-primary);color:var(--c-primary-dark);}
.drawer .nav-cta{justify-content:center;margin-top:auto;}
.drawer-mask{position:fixed;inset:0;background:rgba(18,42,40,.45);z-index:110;opacity:0;pointer-events:none;transition:opacity .28s ease;}
.drawer-mask.open{opacity:1;pointer-events:auto;}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;background:var(--c-dark);}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;}
.hero-bg::after{content:"";position:absolute;inset:0;background:rgba(18,42,40,.62);}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:end;padding:100px 0 88px;}
.hero-content{max-width:640px;color:#fff;}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);background:rgba(216,235,231,.16);border:1px solid rgba(216,235,231,.34);font-size:12.5px;color:#CFE9E4;margin-bottom:22px;}
.hero-eyebrow .pulse{width:7px;height:7px;border-radius:50%;background:#6FD0C3;box-shadow:0 0 0 4px rgba(111,208,195,.18);}
.hero h1{font-size:clamp(30px,4vw,46px);line-height:1.25;font-weight:700;letter-spacing:0;}
.hero-sub{margin-top:18px;font-size:19px;line-height:1.75;color:#D6E6E3;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 26px;border-radius:var(--r-btn);font-size:15.5px;font-weight:600;transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:#128A81;transform:translateY(-1px);box-shadow:0 12px 28px -14px rgba(14,122,114,.9);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-outline{background:#fff;color:var(--c-primary-dark);border:1px solid var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-light);transform:translateY(-1px);}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.5);}
.btn-ghost:hover{background:rgba(255,255,255,.18);}
.btn-block{width:100%;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.badge{display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:var(--r-pill);font-size:12.5px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.26);color:#E6F3F0;}
.badge i{width:5px;height:5px;border-radius:50%;background:#6FD0C3;display:inline-block;}
.hero-card{background:rgba(250,248,244,.94);border:1px solid rgba(255,255,255,.6);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-hover);}
.hero-card h2{font-size:14px;font-weight:600;color:var(--c-muted);line-height:1.6;}
.hero-card ul{margin-top:14px;display:flex;flex-direction:column;gap:12px;}
.hero-card li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;line-height:1.7;color:var(--c-ink);}
.hero-card .num{flex:0 0 auto;width:24px;height:24px;border-radius:8px;background:var(--c-primary-light);color:var(--c-primary-dark);font-size:12.5px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:2px;}

/* ===== 指标条 ===== */
.metrics{background:var(--c-dark);color:#fff;padding:0 0 40px;}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.14);border-radius:var(--r-card);overflow:hidden;}
.metric{background:var(--c-dark);padding:22px 24px;}
.metric .val{font-size:clamp(24px,2.6vw,32px);font-weight:700;color:#7FD6C9;line-height:1.2;}
.metric .val small{font-size:13px;font-weight:500;color:#BFD6D2;margin-left:4px;}
.metric .key{margin-top:6px;font-size:13px;color:#BFD6D2;}

/* ===== 通用板块 ===== */
.section{padding:var(--pad-section) 0;}
.section-alt{background:var(--c-bg-alt);}
.section-head{max-width:720px;margin-bottom:48px;}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:600;color:var(--c-primary-dark);background:var(--c-primary-light);padding:5px 12px;border-radius:var(--r-pill);margin-bottom:16px;}
.section-title{font-size:clamp(24px,2.6vw,32px);line-height:1.35;font-weight:700;word-spacing:.06em;}
.section-desc{margin-top:14px;font-size:16px;color:var(--c-muted);line-height:1.85;}
.to-top{display:inline-flex;align-items:center;gap:6px;margin-top:36px;font-size:13px;color:var(--c-muted);transition:color var(--ease);}
.to-top:hover{color:var(--c-primary-dark);}

/* ===== 卖点错位双列 ===== */
.point-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.point-row + .point-row{margin-top:80px;}
.point-row.reverse .point-copy{order:2;}
.point-row.reverse .point-media{order:1;}
.point-icon{width:46px;height:46px;border-radius:12px;border:1.5px solid var(--c-primary);color:var(--c-primary);display:flex;align-items:center;justify-content:center;margin-bottom:18px;}
.point-copy h3{font-size:20px;line-height:1.5;font-weight:600;}
.point-copy p{margin-top:12px;color:var(--c-muted);font-size:16px;line-height:1.85;}
.point-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.point-list li{position:relative;padding-left:22px;font-size:15px;color:var(--c-ink);}
.point-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:3px;background:var(--c-primary-light);border:1.5px solid var(--c-primary);}
.point-media{position:relative;}
.point-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);border:1px solid var(--c-line);background:var(--c-bg-alt);}
.media-tag{position:absolute;left:18px;bottom:18px;background:rgba(18,42,40,.86);color:#fff;font-size:12.5px;padding:7px 14px;border-radius:var(--r-pill);}

/* ===== 演示区 ===== */
.demo-card{background:#fff;border:1px solid var(--c-line);border-radius:18px;padding:20px;box-shadow:var(--sh-card);}
.demo-visual{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);aspect-ratio:16/9;background:var(--c-bg-alt);}
.demo-visual img{width:100%;height:100%;object-fit:cover;}
.demo-visual::after{content:"";position:absolute;inset:0;background:rgba(18,42,40,.34);}
.play-btn{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:74px;height:74px;border-radius:50%;background:rgba(250,248,244,.94);color:var(--c-primary-dark);display:flex;align-items:center;justify-content:center;z-index:3;box-shadow:0 12px 32px -12px rgba(18,42,40,.6);transition:transform var(--ease),background var(--ease);}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.06);background:#fff;}
.play-btn::before{content:"";width:0;height:0;border-left:16px solid var(--c-primary);border-top:10px solid transparent;border-bottom:10px solid transparent;margin-left:5px;}
.demo-notes{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:24px;}
.demo-notes div{padding:0 22px;font-size:14.5px;color:var(--c-muted);line-height:1.75;}
.demo-notes div + div{border-left:1px solid var(--c-line);}
.demo-notes strong{display:block;color:var(--c-ink);font-size:15px;font-weight:600;margin-bottom:4px;}

/* ===== 证据区 ===== */
.proof-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:56px;align-items:start;}
.proof-stats{display:flex;flex-direction:column;gap:22px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-card);}
.stat .num{font-size:clamp(28px,3.2vw,38px);font-weight:700;color:var(--c-primary-dark);line-height:1.1;}
.stat .num small{font-size:14px;font-weight:500;color:var(--c-muted);margin-left:6px;}
.stat .label{margin-top:6px;font-size:14px;color:var(--c-muted);}
.timeline{position:relative;padding-left:26px;}
.timeline::before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;background:var(--c-primary-light);}
.tl-item{position:relative;padding-bottom:26px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{content:"";position:absolute;left:-26px;top:8px;width:10px;height:10px;border-radius:50%;background:var(--c-primary);border:2px solid var(--c-bg-alt);}
.tl-item h3{font-size:17px;font-weight:600;line-height:1.6;}
.tl-item p{margin-top:6px;font-size:14.5px;color:var(--c-muted);line-height:1.8;}

/* ===== 价格方案 ===== */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.price-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px 24px 24px;display:flex;flex-direction:column;transition:box-shadow var(--ease),transform var(--ease);}
.price-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);}
.price-card.featured{border-top:3px solid var(--c-primary);transform:translateY(-8px);box-shadow:var(--sh-card);}
.price-card.featured:hover{transform:translateY(-10px);}
.price-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:6px;}
.price-head h3{font-size:18px;font-weight:600;}
.tag-recommend{font-size:11.5px;font-weight:600;color:#fff;background:var(--c-accent);padding:4px 10px;border-radius:var(--r-pill);}
.price-desc{font-size:13.5px;color:var(--c-muted);line-height:1.7;min-height:44px;}
.price-num{margin-top:14px;display:flex;align-items:baseline;gap:4px;color:var(--c-primary-dark);}
.price-num .cur{font-size:15px;font-weight:600;}
.price-num .val{font-size:40px;font-weight:700;line-height:1;}
.price-num .unit{font-size:13px;color:var(--c-muted);}
.feature-list{margin:22px 0 26px;display:flex;flex-direction:column;gap:11px;}
.feature-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;line-height:1.7;}
.feature-list li::before{content:"";flex:0 0 auto;width:16px;height:16px;margin-top:4px;border-radius:50%;background:var(--c-primary-light);border:1.5px solid var(--c-primary);}
.price-card .btn{margin-top:auto;}

/* ===== 最新信息 ===== */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:36px;}
.news-more{font-size:14px;color:var(--c-primary-dark);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.news-more:hover{color:var(--c-accent);}
.news-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:28px;min-height:360px;}
.news-main{display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;transition:box-shadow var(--ease);}
.news-main:hover{box-shadow:var(--sh-hover);}
.news-main .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-bg-alt);}
.news-main .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-main:hover .thumb img{transform:scale(1.03);}
.news-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-tag{display:inline-flex;align-self:flex-start;font-size:12px;font-weight:600;color:var(--c-primary-dark);background:var(--c-primary-light);padding:4px 11px;border-radius:var(--r-pill);}
.news-main h3{font-size:20px;line-height:1.55;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-excerpt{font-size:14.5px;color:var(--c-muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--c-muted);padding-top:12px;border-top:1px solid var(--c-line);}
.read-link{color:var(--c-primary-dark);font-weight:600;}
.read-link:hover{color:var(--c-accent);}
.news-side{display:flex;flex-direction:column;gap:20px;}
.news-item{display:grid;grid-template-columns:96px minmax(0,1fr);gap:16px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:16px;transition:box-shadow var(--ease),border-color var(--ease);}
.news-item:hover{box-shadow:var(--sh-card);border-color:#CFE4E0;}
.news-item .thumb{width:96px;height:96px;border-radius:10px;overflow:hidden;background:var(--c-bg-alt);}
.news-item .thumb img{width:100%;height:100%;object-fit:cover;}
.news-item h3{font-size:15.5px;line-height:1.55;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item .mini-meta{margin-top:8px;font-size:12.5px;color:var(--c-muted);display:flex;gap:10px;flex-wrap:wrap;}
.empty-state{grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:56px 24px;background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-card);text-align:center;}
.empty-box{width:64px;height:64px;border-radius:16px;background:var(--c-bg-alt);border:1px solid var(--c-line);display:flex;align-items:center;justify-content:center;color:var(--c-muted);font-size:22px;}
.empty-state p{font-size:14.5px;color:var(--c-muted);}

/* ===== FAQ ===== */
.faq-layout{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:56px;align-items:start;}
.faq-left{position:sticky;top:96px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:12px;padding:0 20px;transition:border-color var(--ease),box-shadow var(--ease);}
.faq-item[open]{border-color:#CFE4E0;box-shadow:var(--sh-card);}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;font-size:16px;font-weight:600;line-height:1.6;transition:color var(--ease);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item[open] summary{color:var(--c-primary-dark);}
.faq-arrow{flex:0 0 auto;width:24px;height:24px;border-radius:50%;background:var(--c-primary-light);position:relative;transition:transform .18s ease;}
.faq-arrow::before,.faq-arrow::after{content:"";position:absolute;background:var(--c-primary-dark);border-radius:2px;}
.faq-arrow::before{width:10px;height:2px;left:7px;top:11px;}
.faq-arrow::after{width:2px;height:10px;left:11px;top:7px;transition:opacity .18s ease;}
.faq-item[open] .faq-arrow{transform:rotate(180deg);}
.faq-item[open] .faq-arrow::after{opacity:0;}
.faq-answer{padding:0 0 20px;font-size:15px;color:var(--c-muted);line-height:1.85;max-width:640px;}

/* ===== 尾部 CTA ===== */
.cta-band{background:var(--c-dark);color:#fff;padding:76px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(24px,2.8vw,32px);line-height:1.35;font-weight:700;}
.cta-inner p{margin-top:12px;color:#BFD6D2;font-size:15.5px;max-width:620px;line-height:1.8;}

/* ===== 页脚 ===== */
.site-footer{background:var(--c-dark);color:#CFE0DC;padding:64px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px;}
.footer-brand .logo-main{color:#fff;}
.footer-brand .logo-sub{color:#8FB5AF;}
.footer-brand p{margin-top:16px;color:#A9C4BF;line-height:1.85;font-size:13.5px;max-width:320px;}
.footer-col h3{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:#A9C4BF;font-size:13.5px;transition:color var(--ease);}
.footer-col a:hover{color:#7FD6C9;}
.footer-bottom{border-top:1px solid rgba(207,224,220,.16);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:#8FB5AF;}
.footer-bottom .host{letter-spacing:.3px;}

/* ===== 浮动 CTA ===== */
.float-cta{position:fixed;right:24px;bottom:28px;z-index:90;display:inline-flex;align-items:center;gap:10px;padding:13px 22px;border-radius:var(--r-pill);background:var(--c-primary);color:#fff;font-size:14.5px;font-weight:600;box-shadow:0 12px 30px -12px rgba(14,122,114,.85);opacity:0;transform:translateY(14px);pointer-events:none;transition:opacity .26s ease,transform .26s ease,background var(--ease);}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{background:var(--c-primary-dark);}
.float-cta .fc-dot{width:7px;height:7px;border-radius:50%;background:#9FE3D9;}
.mobile-bar{display:none;}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .container{padding:0 22px;}
  .hero-inner{gap:36px;padding:84px 0 72px;}
  .point-row{gap:40px;}
  .point-row + .point-row{margin-top:64px;}
}
@media (max-width:1024px){
  :root{--pad-section:84px;}
  .main-nav{display:none;}
  .nav-cta.desk{display:none;}
  .nav-toggle{display:flex;}
  .hero-inner{grid-template-columns:1fr;align-items:start;padding:76px 0 64px;}
  .hero-card{max-width:520px;}
  .metrics-grid{grid-template-columns:repeat(2,1fr);}
  .price-grid{grid-template-columns:1fr;gap:20px;}
  .price-card.featured{transform:none;}
  .price-card.featured:hover{transform:translateY(-2px);}
  .news-grid{grid-template-columns:1fr;}
  .proof-grid{grid-template-columns:1fr;gap:32px;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .faq-left{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  :root{--pad-section:64px;}
  body{font-size:16px;}
  .container{padding:0 16px;}
  .topbar-note .topbar-host{display:none;}
  .topbar-inner{font-size:12px;}
  .hero-sub{font-size:17px;}
  .hero-card{display:none;}
  .hero-actions .btn{flex:1 1 100%;}
  .point-row,.point-row.reverse{grid-template-columns:1fr;gap:24px;}
  .point-row.reverse .point-copy{order:1;}
  .point-row.reverse .point-media{order:2;}
  .point-row + .point-row{margin-top:48px;}
  .demo-notes{grid-template-columns:1fr;gap:16px;}
  .demo-notes div{padding:0;}
  .demo-notes div + div{border-left:0;border-top:1px solid var(--c-line);padding-top:16px;}
  .play-btn{width:60px;height:60px;}
  .section-head{margin-bottom:32px;}
  .faq-item{padding:0 16px;}
  .cta-band{padding:56px 0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .float-cta{display:none;}
  .mobile-bar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:95;align-items:center;justify-content:space-between;gap:12px;background:var(--c-dark);color:#fff;padding:10px 16px calc(10px + env(safe-area-inset-bottom));box-shadow:0 -8px 24px -12px rgba(18,42,40,.6);}
  .mobile-bar span{font-size:13.5px;color:#CFE0DC;}
  .mobile-bar .btn{padding:10px 18px;font-size:14px;}
  body{padding-bottom:66px;}
  .footer-bottom{font-size:12px;}
}
@media (max-width:520px){
  .hero h1{font-size:28px;}
  .metrics-grid{grid-template-columns:1fr;}
  .logo-mark{width:34px;height:34px;font-size:15px;}
  .logo-main{font-size:15.5px;}
  .news-item{grid-template-columns:72px minmax(0,1fr);}
  .news-item .thumb{width:72px;height:72px;}
  .price-num .val{font-size:34px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

/* roulang page: article */
:root{
  --brand:#0E7A72;
  --brand-dark:#095E58;
  --brand-light:#D8EBE7;
  --accent:#C8703C;
  --bg:#FAF8F4;
  --bg-alt:#F1EFE9;
  --ink:#1E2A28;
  --ink-2:#5A6B68;
  --line:#E2DED5;
  --deep:#12332F;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-card:0 1px 2px rgba(18,42,40,.06),0 8px 24px -12px rgba(18,42,40,.14);
  --shadow-hover:0 2px 4px rgba(18,42,40,.08),0 18px 38px -16px rgba(18,42,40,.22);
  --container:1200px;
  --gap:24px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
body.nav-open{overflow:hidden;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
button{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid rgba(14,122,114,.45);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--deep);color:#EAF2F0;font-size:12.5px;line-height:38px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;}
.topbar-left{display:flex;align-items:center;gap:10px;color:#B9CFCB;min-width:0;}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.02em;}
.topbar-dot{width:3px;height:3px;border-radius:50%;background:#6E8C88;flex:none;}
.topbar-note{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.topbar-right{display:flex;align-items:center;gap:8px;flex:none;}
.topbar-right a{color:#DCEBE8;}
.topbar-right a:hover{color:#fff;}
.topbar-sep{color:#5F7A76;}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease,background .22s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-card);background:#FFFDF9;}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px;transition:height .22s ease;}
.site-header.is-scrolled .nav-wrap{height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand);color:#fff;font-size:19px;font-weight:700;
  box-shadow:0 6px 16px -8px rgba(14,122,114,.7);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:16.5px;font-weight:700;color:var(--ink);}
.logo-sub{font-size:11px;color:var(--ink-2);letter-spacing:.06em;margin-top:2px;}
.main-nav{display:flex;align-items:center;gap:30px;flex:1;justify-content:center;}
.nav-link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;color:var(--ink-2);font-weight:500;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left center;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--brand-dark);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-dark);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.nav-cta{flex:none;}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;flex:none;
  border:1px solid var(--line);border-radius:10px;background:#fff;
  position:relative;cursor:pointer;padding:0;
}
.nav-toggle span{position:absolute;left:50%;top:50%;width:18px;height:2px;background:var(--ink);border-radius:2px;transform:translate(-50%,-50%);transition:background .18s ease;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .22s ease;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 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 .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px -10px rgba(14,122,114,.9);}
.btn-primary:hover{background:#0F8A80;transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand-dark);}
.btn-ghost:hover{background:var(--brand-light);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px;}

/* ---------- 面包屑 ---------- */
.breadcrumb{font-size:13px;color:var(--ink-2);padding:22px 0 0;}
.breadcrumb-inner{display:flex;align-items:center;flex-wrap:wrap;gap:8px;}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--brand-dark);}
.bc-sep{color:#C3BDB1;}
.bc-current{color:var(--ink);font-weight:600;}

/* ---------- 文章头部 ---------- */
.article-head{background:var(--bg-alt);border-bottom:1px solid var(--line);padding-bottom:44px;margin-bottom:56px;}
.article-head-inner{max-width:860px;margin:0 auto;padding-top:26px;}
.tag{
  display:inline-flex;align-items:center;height:27px;padding:0 13px;
  border-radius:var(--radius-pill);background:var(--brand-light);color:var(--brand-dark);
  font-size:12.5px;font-weight:600;line-height:1;
}
.article-title{
  font-size:clamp(25px,3.6vw,38px);line-height:1.34;font-weight:700;
  color:#152723;margin:18px 0 18px;
  word-break:break-word;
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:13.5px;color:var(--ink-2);}
.article-meta time{color:var(--ink-2);}
.meta-sep{color:#C3BDB1;}
.meta-strong{color:var(--brand-dark);font-weight:600;}

/* ---------- 正文 ---------- */
.article-wrap{padding-bottom:64px;}
.article-prose{
  max-width:760px;margin:0 auto;padding-left:8px;
  font-size:16.5px;line-height:1.9;color:var(--ink);
  overflow-wrap:break-word;
}
.article-prose p{margin:0 0 1.15em;}
.article-prose > p:first-of-type{
  font-size:17.5px;color:#15302C;padding-left:16px;
  border-left:3px solid var(--brand);margin-bottom:1.4em;line-height:1.85;
}
.article-prose h2{
  position:relative;font-size:clamp(20px,2.2vw,24px);font-weight:700;line-height:1.5;
  padding-left:18px;margin:2em 0 .75em;color:#152723;
}
.article-prose h2::before{
  content:"";position:absolute;left:0;top:.55em;width:10px;height:10px;
  border-radius:3px;background:var(--brand);
}
.article-prose h3{font-size:19px;font-weight:600;line-height:1.55;margin:1.7em 0 .6em;color:#152723;}
.article-prose h4{font-size:17px;font-weight:600;margin:1.4em 0 .5em;}
.article-prose a{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.article-prose a:hover{color:var(--accent);}
.article-prose strong{font-weight:700;color:#15302C;}
.article-prose blockquote{
  margin:1.6em 0;padding:16px 20px;background:var(--brand-light);
  border-left:3px solid var(--brand);border-radius:0 10px 10px 0;color:#22403B;
}
.article-prose blockquote p:last-child{margin-bottom:0;}
.article-prose ul{margin:0 0 1.2em;padding-left:2px;}
.article-prose ul li{position:relative;padding-left:20px;margin-bottom:.55em;}
.article-prose ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;
  border-radius:50%;background:var(--brand);
}
.article-prose ol{margin:0 0 1.2em;padding-left:22px;list-style:decimal;}
.article-prose ol li{margin-bottom:.55em;padding-left:4px;}
.article-prose ol li::marker{color:var(--brand);font-weight:700;}
.article-prose img{
  max-width:100%;height:auto;margin:1.6em 0;border-radius:var(--radius-card);
  border:1px solid var(--line);background:#EDEAE3;
}
.article-prose figure{margin:1.6em 0;}
.article-prose figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:10px;}
.article-prose table{
  display:block;width:100%;max-width:100%;overflow-x:auto;
  border-collapse:collapse;margin:1.6em 0;font-size:15px;line-height:1.7;
}
.article-prose th,.article-prose td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top;}
.article-prose thead th{background:var(--brand-light);color:#15302C;font-weight:600;white-space:nowrap;}
.article-prose tbody tr:nth-child(even){background:#F7F5F0;}
.article-prose hr{border:0;border-top:1px solid var(--line);margin:2.2em 0;}
.article-prose code{background:#EFEDE6;border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:14px;}
.article-prose pre{
  background:#15302C;color:#E7F2EF;border-radius:var(--radius-card);
  padding:18px 20px;overflow-x:auto;margin:1.6em 0;font-size:14px;line-height:1.75;
}
.article-prose pre code{background:none;border:0;color:inherit;padding:0;}

/* ---------- 文末行动条 ---------- */
.article-end{
  max-width:760px;margin:52px auto 0;padding:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  box-shadow:var(--shadow-card);
}
.article-end h3{font-size:17px;font-weight:700;margin-bottom:4px;color:#152723;}
.article-end p{font-size:14px;color:var(--ink-2);line-height:1.75;margin:0;}

/* ---------- 空状态 ---------- */
.empty-state{
  max-width:760px;margin:0 auto;padding:48px 24px;text-align:center;
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);
}
.empty-icon{
  width:64px;height:64px;margin:0 auto 16px;border-radius:16px;
  background:#E7E3DA;display:flex;align-items:center;justify-content:center;
  font-size:24px;color:#8D9B98;
}
.empty-state p{font-size:16px;color:var(--ink-2);margin-bottom:20px;}

/* ---------- 相关入口 ---------- */
.related-section{background:var(--bg-alt);padding:72px 0;margin-top:24px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:32px;}
.section-head h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;color:#152723;line-height:1.4;}
.section-head p{font-size:14.5px;color:var(--ink-2);margin-top:8px;}
.section-head a{font-size:14.5px;font-weight:600;color:var(--brand-dark);}
.section-head a:hover{color:var(--accent);}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.related-card{
  display:flex;gap:18px;padding:18px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#CFDAD6;}
.related-card img{
  width:104px;height:104px;flex:none;object-fit:cover;
  border-radius:12px;border:1px solid var(--line);background:#EDEAE3;
}
.related-card .rc-body{min-width:0;display:flex;flex-direction:column;justify-content:center;}
.related-card .rc-body h3{font-size:16.5px;font-weight:700;line-height:1.5;margin-bottom:6px;color:#152723;}
.related-card .rc-body p{font-size:13.5px;color:var(--ink-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-card .rc-body span{margin-top:10px;font-size:13px;font-weight:600;color:var(--brand-dark);}

/* ---------- 返回入口 ---------- */
.back-row{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:36px;}

/* ---------- 尾部 CTA ---------- */
.tail-cta{background:var(--deep);color:#fff;padding:64px 0;}
.tail-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;}
.tail-cta h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.4;color:#fff;}
.tail-cta p{font-size:14.5px;color:#B9CFCB;margin-top:8px;}
.tail-cta .btn-primary{background:#fff;color:var(--brand-dark);box-shadow:none;}
.tail-cta .btn-primary:hover{background:var(--brand-light);color:var(--brand-dark);}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:130;
  display:inline-flex;align-items:center;gap:10px;
  height:50px;padding:0 22px;border-radius:var(--radius-pill);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 10px 26px -10px rgba(14,122,114,.9);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background .18s ease;
}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:#0F8A80;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:#C6D8D5;padding:64px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-main{color:#fff;}
.footer-brand .logo-sub{color:#93AFAB;}
.footer-brand p{font-size:13.5px;line-height:1.85;color:#A6BFBB;max-width:340px;}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:13.5px;color:#A6BFBB;}
.footer-col a:hover{color:var(--brand-light);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:12.5px;color:#8AA5A1;
}
.footer-bottom .host{color:#6F8B87;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .main-nav{gap:22px;}
}
@media (max-width:991px){
  .nav-wrap{height:64px;gap:16px;}
  .main-nav{
    position:fixed;top:0;right:0;z-index:200;
    width:80%;max-width:320px;height:100vh;
    background:#FFFDF9;border-left:1px solid var(--line);
    flex-direction:column;align-items:flex-start;justify-content:flex-start;
    gap:6px;padding:88px 24px 32px;
    transform:translateX(102%);transition:transform .26s ease;
    box-shadow:-20px 0 40px -24px rgba(18,42,40,.4);
  }
  .main-nav.is-open{transform:translateX(0);}
  .nav-link{display:block;width:100%;padding:12px 0;font-size:15.5px;border-bottom:1px solid var(--line);}
  .nav-link::after{display:none;}
  .nav-toggle{display:block;}
  .nav-cta.desk{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .related-grid{grid-template-columns:1fr;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .topbar-left{display:none;}
  .topbar-inner{justify-content:flex-end;}
  .article-head{padding-bottom:34px;margin-bottom:40px;}
  .article-head-inner{padding-top:18px;}
  .article-prose{padding-left:0;font-size:16px;}
  .article-prose > p:first-of-type{font-size:16.5px;}
  .article-end{flex-direction:column;align-items:flex-start;}
  .related-section{padding:56px 0;}
  .related-card{flex-direction:column;}
  .related-card img{width:100%;height:160px;}
  .tail-cta{padding:48px 0;}
  .float-cta{
    left:0;right:0;bottom:0;height:auto;padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    border-radius:0;justify-content:space-between;background:var(--brand);
    opacity:1;visibility:visible;transform:none;
  }
  body{padding-bottom:64px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .site-footer{padding-top:48px;}
}
@media (max-width:520px){
  .article-prose{font-size:15.5px;}
  .article-meta{font-size:12.5px;gap:8px;}
  .btn{height:42px;padding:0 18px;font-size:14.5px;}
  .back-row .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --primary:#0E7A72;
  --primary-dark:#095E58;
  --primary-light:#D8EBE7;
  --accent:#C8703C;
  --bg:#FAF8F4;
  --bg-alt:#F1EFE9;
  --text:#1E2A28;
  --muted:#5A6B68;
  --line:#E2DED5;
  --ink:#12332F;
  --white:#FFFFFF;

  --radius-card:14px;
  --radius-btn:10px;
  --radius-pill:999px;

  --shadow-sm:0 1px 2px rgba(18,42,40,.06);
  --shadow-md:0 1px 2px rgba(18,42,40,.06),0 8px 24px -12px rgba(18,42,40,.14);
  --shadow-lg:0 2px 6px rgba(18,42,40,.08),0 20px 44px -20px rgba(18,42,40,.30);

  --container:1200px;
  --pad-x:24px;
  --sec-y:96px;
  --gap:24px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:var(--primary-dark);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
a:hover{color:var(--primary)}
button{font-family:inherit;font-size:inherit;cursor:pointer}
:focus-visible{outline:2px solid rgba(14,122,114,.45);outline-offset:2px;border-radius:6px}

.container{max-width:var(--container);margin:0 auto;padding:0 var(--pad-x)}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--ink);
  color:rgba(255,255,255,.82);
  font-size:12.5px;
  line-height:1.6;
}
.topbar-inner{
  min-height:38px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-top:6px;
  padding-bottom:6px;
}
.topbar-left{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.topbar-host{
  color:#fff;
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-pill);
  padding:1px 10px;
  font-size:12px;
}
.topbar-right{display:flex;align-items:center;gap:10px;white-space:nowrap}
.topbar-right a{color:#CFEAE5;font-weight:600}
.topbar-right a:hover{color:#fff}
.topbar-dot{color:rgba(255,255,255,.35)}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease,background-color .2s ease;
}
.site-header.is-stuck{box-shadow:var(--shadow-md);background:rgba(250,248,244,.97)}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:72px;
  transition:min-height .2s ease;
}
.site-header.is-stuck .nav-wrap{min-height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text)}
.logo:hover{color:var(--text)}
.logo-mark{
  width:36px;height:36px;flex:0 0 36px;
  display:grid;place-items:center;
  background:var(--primary);
  color:#fff;
  border-radius:11px;
  font-weight:700;
  font-size:17px;
  box-shadow:0 6px 16px -8px rgba(14,122,114,.9);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-main{font-size:17px;font-weight:700;color:var(--text)}
.logo-sub{font-size:11.5px;color:var(--muted);font-weight:500}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  border-radius:var(--radius-btn);
  font-size:15px;
  color:var(--muted);
  font-weight:500;
}
.nav-link:hover{color:var(--primary-dark);background:rgba(216,235,231,.55)}
.nav-link.active{color:var(--primary-dark);font-weight:600;background:rgba(216,235,231,.75)}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  background:var(--primary);
  border-radius:2px;
}
.nav-cta.desk{flex:0 0 auto}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;top:50%;
  width:18px;height:2px;background:var(--ink);border-radius:2px;
  transform:translate(-50%,-50%);
  content:"";
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span::before{transform:translate(-50%,-7px)}
.nav-toggle span::after{transform:translate(-50%,5px)}
.nav-scrim{
  position:fixed;inset:0;
  background:rgba(18,42,40,.45);
  opacity:0;pointer-events:none;
  transition:opacity .25s ease;
  z-index:55;
}
.nav-scrim.show{opacity:1;pointer-events:auto}
body.nav-open{overflow:hidden}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--primary-dark);color:#fff;box-shadow:0 8px 20px -12px rgba(9,94,88,.9)}
.btn-primary:hover{background:var(--primary);color:#fff;transform:translateY(-1px);box-shadow:0 14px 26px -14px rgba(9,94,88,.95)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm)}
.btn-outline{background:#fff;color:var(--primary-dark);border-color:rgba(14,122,114,.5)}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--primary-dark);border-color:transparent;padding:8px 4px;font-weight:600}
.btn-ghost:hover{color:var(--primary)}
.btn-block{width:100%}

/* ---------- 页头区 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:56px 0 72px;
  background:var(--bg);
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.10;
  pointer-events:none;
}
.page-hero > .container{position:relative;z-index:1}
.breadcrumb{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary-dark)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--text);font-weight:600}

.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:44px;
  align-items:center;
  margin-top:26px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;
  border-radius:var(--radius-pill);
  background:var(--primary-light);
  color:var(--primary-dark);
  font-size:13px;font-weight:600;
  border:1px solid rgba(14,122,114,.18);
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}
.page-hero h1{
  margin-top:18px;
  font-size:clamp(30px,4vw,46px);
  line-height:1.25;
  font-weight:700;
  color:var(--text);
}
.hero-lead{
  margin-top:16px;
  font-size:18px;
  line-height:1.8;
  color:var(--muted);
  max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 13px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:#fff;
  color:var(--muted);
  font-size:13px;
}
.tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary)}
.tag.accent::before{background:var(--accent)}

.hero-figure{position:relative}
.hero-figure img{
  width:100%;
  height:360px;
  object-fit:cover;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  box-shadow:var(--shadow-lg);
}
.hero-badge{
  position:absolute;
  left:-14px;
  bottom:-18px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:14px 18px;
  box-shadow:var(--shadow-md);
  min-width:190px;
}
.hero-badge strong{display:block;font-size:22px;line-height:1.3;color:var(--primary-dark)}
.hero-badge span{font-size:13px;color:var(--muted)}

/* ---------- 指标卡 ---------- */
.metric-row{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:14px;
  margin-top:34px;
}
.metric-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:16px 18px;
  box-shadow:var(--shadow-sm);
  transition:box-shadow .2s ease,transform .2s ease;
}
.metric-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.metric-num{font-size:26px;font-weight:700;color:var(--primary-dark);line-height:1.2}
.metric-num .unit{font-size:13px;font-weight:600;color:var(--muted);margin-left:3px}
.metric-card p{font-size:13px;color:var(--muted);margin-top:4px;line-height:1.7}

/* ---------- 板块通用 ---------- */
.section{padding:var(--sec-y) 0}
.section--alt{background:var(--bg-alt)}
.section-head{max-width:720px}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.35;
  font-weight:700;
  word-spacing:.06em;
}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px}
.section-foot{margin-top:36px;display:flex;justify-content:flex-start}

/* ---------- 两栏正文 ---------- */
.layout-8-4{
  display:grid;
  grid-template-columns:minmax(0,2fr) minmax(0,1fr);
  gap:36px;
  align-items:start;
  margin-top:44px;
}
.prose p{margin-bottom:1.15em;color:var(--text)}
.prose p:last-child{margin-bottom:0}
.prose .lead{
  font-size:17.5px;
  color:var(--primary-dark);
  border-left:3px solid var(--primary);
  padding-left:16px;
  line-height:1.9;
}
.prose h3{font-size:20px;font-weight:600;margin:30px 0 10px}
.prose ul.bullets li{
  position:relative;
  padding-left:20px;
  margin-bottom:8px;
  color:var(--muted);
}
.prose ul.bullets li::before{
  content:"";
  position:absolute;left:2px;top:.72em;
  width:7px;height:7px;border-radius:2px;
  background:var(--primary);
}

/* ---------- 卡片 ---------- */
.card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:rgba(14,122,114,.28)}

.card-grid-2{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
  margin-top:34px;
}
.item-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.item-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:rgba(14,122,114,.28)}
.item-card img{width:100%;height:158px;object-fit:cover;border-bottom:1px solid var(--line)}
.item-card .body{padding:20px 22px 22px}
.item-card .badge{
  display:inline-block;
  font-size:12.5px;
  font-weight:600;
  color:var(--primary-dark);
  background:var(--primary-light);
  border-radius:var(--radius-pill);
  padding:3px 11px;
}
.item-card h3{font-size:19px;font-weight:600;margin:12px 0 8px;line-height:1.5}
.item-card p{font-size:15px;color:var(--muted);line-height:1.8}
.stagger{display:contents}
@media (min-width:992px){
  .card-grid-2 .item-card:nth-child(even){transform:translateY(26px)}
  .card-grid-2 .item-card:nth-child(even):hover{transform:translateY(23px)}
}

/* ---------- 侧边卡 ---------- */
.side-col{position:relative}
.sticky-card{
  position:sticky;
  top:96px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-sm);
}
.sticky-card h3{font-size:17px;font-weight:700;margin-bottom:14px}
.check-list li{
  display:flex;
  gap:10px;
  font-size:14.5px;
  color:var(--muted);
  line-height:1.75;
  padding:7px 0;
  border-bottom:1px dashed var(--line);
}
.check-list li:last-child{border-bottom:0}
.check-list .tick{
  flex:0 0 18px;
  width:18px;height:18px;
  margin-top:4px;
  border-radius:50%;
  background:var(--primary-light);
  color:var(--primary-dark);
  font-size:11px;
  font-weight:700;
  display:grid;place-items:center;
}
.side-divider{height:1px;background:var(--line);margin:20px 0}
.side-links li{margin-bottom:6px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;
  gap:10px;
  padding:10px 12px;
  border-radius:10px;
  background:var(--bg);
  color:var(--text);
  font-size:14.5px;
  transition:background-color .18s ease,color .18s ease;
}
.side-links a:hover{background:var(--primary-light);color:var(--primary-dark)}
.side-links .arrow{color:var(--primary);font-size:13px}
.side-contact{font-size:13.5px;color:var(--muted);line-height:1.8;margin-top:10px}

/* ---------- 深色指标区 ---------- */
.section--dark{
  background:var(--ink);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.section--dark::before{
  content:"";
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  opacity:.14;
}
.section--dark > .container{position:relative;z-index:1}
.section--dark h2{color:#fff}
.section--dark .section-head p{color:rgba(255,255,255,.72)}
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
  margin-top:40px;
}
.stat{
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.05);
  border-radius:var(--radius-card);
  padding:20px;
  transition:background-color .2s ease,border-color .2s ease,transform .2s ease;
}
.stat:hover{background:rgba(255,255,255,.09);border-color:rgba(216,235,231,.4);transform:translateY(-2px)}
.stat b{display:block;font-size:30px;line-height:1.2;color:#7FD1C7;font-weight:700}
.stat b .unit{font-size:14px;color:rgba(255,255,255,.7);margin-left:4px;font-weight:600}
.stat span{display:block;margin-top:6px;font-size:13.5px;color:rgba(255,255,255,.7);line-height:1.7}

.timeline{margin-top:48px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0}
.tl-item{
  position:relative;
  padding:0 22px 0 22px;
  border-left:2px solid rgba(216,235,231,.28);
}
.tl-item:first-child{padding-left:20px}
.tl-item::before{
  content:"";
  position:absolute;left:-6px;top:6px;
  width:10px;height:10px;border-radius:50%;
  background:#7FD1C7;
  box-shadow:0 0 0 4px rgba(127,209,199,.16);
}
.tl-item .step{font-size:12.5px;font-weight:600;color:var(--accent);background:rgba(200,112,60,.16);border-radius:var(--radius-pill);padding:2px 10px;display:inline-block}
.tl-item h3{font-size:16.5px;font-weight:600;color:#fff;margin:12px 0 6px}
.tl-item p{font-size:13.5px;color:rgba(255,255,255,.66);line-height:1.8}

/* ---------- 横条列表 ---------- */
.bar-list{display:grid;gap:16px;margin-top:38px}
.bar-item{
  display:grid;
  grid-template-columns:132px minmax(0,1fr) auto;
  gap:22px;
  align-items:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:18px;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.bar-item:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:rgba(14,122,114,.28)}
.bar-item img{width:132px;height:96px;object-fit:cover;border-radius:10px;border:1px solid var(--line)}
.bar-item h3{font-size:18px;font-weight:600;line-height:1.5}
.bar-item p{font-size:14.5px;color:var(--muted);line-height:1.8;margin-top:6px}
.bar-item .bar-tag{
  align-self:center;
  font-size:13px;font-weight:600;
  color:var(--primary-dark);
  background:var(--primary-light);
  border-radius:var(--radius-pill);
  padding:6px 14px;
  white-space:nowrap;
}

/* ---------- FAQ ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,2fr);
  gap:40px;
  align-items:start;
}
.faq-side{position:sticky;top:96px}
.faq-side h2{font-size:clamp(24px,2.6vw,32px);line-height:1.35;font-weight:700}
.faq-side p{margin-top:14px;color:var(--muted);font-size:15.5px}
.faq-list{display:grid;gap:12px}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  padding:0 20px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:rgba(14,122,114,.4);box-shadow:var(--shadow-sm)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:17px 34px 17px 0;
  position:relative;
  font-size:16.5px;
  font-weight:600;
  color:var(--text);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";
  position:absolute;
  right:6px;top:50%;
  width:8px;height:8px;
  border-right:2px solid var(--muted);
  border-bottom:2px solid var(--muted);
  transform:translateY(-70%) rotate(45deg);
  transition:transform .18s ease,border-color .18s ease;
}
.faq-item[open] summary{color:var(--primary-dark)}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg);border-color:var(--primary)}
.faq-a{padding-bottom:18px;color:var(--muted);font-size:15.5px;line-height:1.85}
.faq-a p{margin:0}

/* ---------- 尾部 CTA ---------- */
.cta-band{
  background:var(--ink);
  color:#fff;
  padding:72px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);line-height:1.4;font-weight:700;color:#fff}
.cta-inner p{margin-top:10px;color:rgba(255,255,255,.7);font-size:15.5px;max-width:44em}
.cta-band .btn-primary{background:#fff;color:var(--primary-dark);box-shadow:0 12px 28px -16px rgba(0,0,0,.7)}
.cta-band .btn-primary:hover{background:var(--primary-light);color:var(--primary-dark)}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-band .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 0}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:50px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-main{color:#fff}
.footer-brand .logo-sub{color:rgba(255,255,255,.55)}
.footer-brand .logo-mark{background:var(--primary)}
.footer-brand p{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.66);max-width:30em}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-col ul li{margin-bottom:9px}
.footer-col ul li a{color:rgba(255,255,255,.66);font-size:14.5px}
.footer-col ul li a:hover{color:var(--primary-light)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:rgba(255,255,255,.5);
  flex-wrap:wrap;
}
.footer-bottom .host{color:rgba(255,255,255,.42)}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:70;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 22px;
  border-radius:var(--radius-pill);
  background:var(--primary);
  color:#fff;
  font-size:15px;
  font-weight:600;
  box-shadow:0 16px 34px -16px rgba(9,94,88,.9);
  opacity:0;
  transform:translateY(12px);
  pointer-events:none;
  transition:opacity .25s ease,transform .25s ease,background-color .18s ease;
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{background:var(--primary-dark);color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sec-y:84px}
  .hero-grid{gap:32px}
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-figure img{height:300px}
  .hero-badge{left:auto;right:16px;bottom:-16px}
  .layout-8-4{grid-template-columns:1fr;gap:28px}
  .sticky-card{position:static}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-side{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .timeline{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
  .tl-item{border-left:0;border-top:2px solid rgba(216,235,231,.28);padding:20px 0 0}
  .tl-item::before{left:0;top:-6px}
}
@media (max-width:900px){
  .main-nav{
    position:fixed;
    top:0;right:0;
    height:100vh;
    width:min(320px,84vw);
    background:var(--bg);
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:88px 20px 28px;
    transform:translateX(105%);
    transition:transform .28s ease;
    box-shadow:-18px 0 40px -24px rgba(18,42,40,.6);
    z-index:58;
    overflow-y:auto;
  }
  .main-nav.open{transform:translateX(0)}
  .main-nav .nav-link{padding:13px 14px;font-size:16px}
  .main-nav .nav-link.active::after{display:none}
  .nav-toggle{display:block;z-index:59}
  .nav-cta.desk{display:none}
  .card-grid-2{grid-template-columns:1fr}
  .card-grid-2 .item-card:nth-child(even){transform:none}
  .card-grid-2 .item-card:nth-child(even):hover{transform:translateY(-3px)}
}
@media (max-width:767px){
  :root{--sec-y:60px;--pad-x:16px}
  body{font-size:16px;line-height:1.85}
  .topbar-inner{min-height:34px}
  .topbar-label{display:none}
  .topbar-dot{display:none}
  .nav-wrap{min-height:64px}
  .page-hero{padding:38px 0 56px}
  .hero-lead{font-size:16.5px}
  .hero-actions .btn{flex:1 1 auto}
  .hero-figure img{height:240px}
  .hero-badge{position:static;margin-top:14px;box-shadow:var(--shadow-sm)}
  .metric-row{grid-template-columns:1fr;gap:12px}
  .bar-item{grid-template-columns:1fr;gap:14px}
  .bar-item img{width:100%;height:170px}
  .bar-item .bar-tag{justify-self:start}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:36px}
  .stat-strip{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr}
  .float-cta{
    left:0;right:0;bottom:0;
    width:100%;
    justify-content:center;
    border-radius:0;
    padding:16px 16px calc(16px + env(safe-area-inset-bottom));
    transform:translateY(100%);
    box-shadow:0 -10px 28px -18px rgba(18,42,40,.7);
  }
  .float-cta.is-visible{transform:translateY(0)}
  .site-footer{padding-bottom:56px}
}
@media (max-width:480px){
  .page-hero h1{font-size:27px}
  .section-head h2,.faq-side h2{font-size:23px}
  .tag{font-size:12.5px;padding:4px 11px}
  .btn{padding:11px 18px;font-size:14.5px}
  .item-card .body{padding:18px}
  .sticky-card{padding:20px}
}

/* roulang page: category2 */
:root{
  --primary:#0E7A72;
  --primary-dark:#095E58;
  --primary-light:#D8EBE7;
  --accent:#C8703C;
  --bg:#FAF8F4;
  --bg-alt:#F1EFE9;
  --ink:#1E2A28;
  --ink-2:#5A6B68;
  --line:#E2DED5;
  --deep:#12332F;
  --white:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(18,42,40,.06);
  --shadow-md:0 1px 2px rgba(18,42,40,.06),0 8px 24px -12px rgba(18,42,40,.14);
  --shadow-lg:0 1px 2px rgba(18,42,40,.06),0 18px 40px -18px rgba(18,42,40,.26);
  --sp-1:8px;
  --sp-2:12px;
  --sp-3:16px;
  --sp-4:24px;
  --sp-5:32px;
  --sp-6:48px;
  --sp-7:72px;
  --sp-8:96px;
  --container:1200px;
  --font: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary-dark);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--primary);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid rgba(14,122,114,.45);outline-offset:3px;border-radius:4px;}

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

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--deep);
  color:#EAF2F0;
  font-size:12.5px;
  line-height:38px;
  letter-spacing:0;
}
.topbar-inner{display:flex;align-items:center;gap:16px;}
.topbar-host{
  font-weight:600;
  color:#B9D6D1;
  padding-right:14px;
  border-right:1px solid rgba(255,255,255,.18);
}
.topbar-note{color:#CBDCD8;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.topbar-actions{display:flex;align-items:center;gap:10px;white-space:nowrap;}
.topbar-actions a{color:#FFFFFF;font-weight:600;}
.topbar-actions a:hover{color:#8FD3C9;}
.topbar-actions i{color:rgba(255,255,255,.35);font-style:normal;}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease,padding .2s ease;
}
.site-header.is-stuck{box-shadow:var(--shadow-md);}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:28px;
  height:72px;
  transition:height .2s ease;
}
.site-header.is-stuck .nav-wrap{height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);}
.logo:hover{color:var(--ink);}
.logo-mark{
  width:38px;height:38px;flex:0 0 38px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary);
  color:#fff;
  font-size:19px;font-weight:700;
  border-radius:11px;
  box-shadow:var(--shadow-sm);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:18px;font-weight:700;color:var(--ink);}
.logo-sub{font-size:11.5px;color:var(--ink-2);font-weight:500;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  background:var(--primary);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--primary-dark);background:var(--primary-light);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--primary-dark);font-weight:600;}
.nav-cta{margin-left:6px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  background:var(--white);
  border-radius:var(--r-btn);
  position:relative;
  margin-left:auto;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;top:50%;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span::before{content:"";transform:translate(-50%,-7px);}
.nav-toggle span::after{content:"";transform:translate(-50%,5px);}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translate(-50%,-50%) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translate(-50%,-50%) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--primary-dark);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--primary);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-lg);}
.btn-ghost{background:var(--white);color:var(--primary-dark);border-color:rgba(14,122,114,.35);}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary);transform:translateY(-1px);}
.btn-plain{background:transparent;color:var(--primary-dark);padding:10px 4px;}
.btn-plain:hover{color:var(--primary);}
.btn-block{width:100%;}

/* ============ 页头区 ============ */
.page-hero{
  position:relative;
  padding:56px 0 64px;
  background:var(--bg);
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.07;
  pointer-events:none;
}
.page-hero .container{position:relative;}
.crumbs{
  font-size:13px;
  color:var(--ink-2);
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin-bottom:22px;
}
.crumbs a{color:var(--ink-2);}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{color:#C6BFB2;}
.crumbs strong{color:var(--ink);font-weight:600;}
.hero-grid{
  display:grid;
  grid-template-columns:1fr 440px;
  gap:48px;
  align-items:center;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;
  border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;
  background:var(--primary-light);
  color:var(--primary-dark);
}
.tag.accent{background:rgba(200,112,60,.12);color:var(--accent);}
.tag .dot{width:6px;height:6px;border-radius:50%;background:currentColor;}
.page-hero h1{
  font-size:clamp(30px,4vw,46px);
  line-height:1.25;
  font-weight:700;
  color:var(--ink);
  margin-bottom:18px;
}
.page-hero h1 em{font-style:normal;color:var(--primary);}
.hero-sub{
  font-size:17px;
  line-height:1.85;
  color:var(--ink-2);
  max-width:34em;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.metric-bar{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:12px;
  padding:18px 0 0;
  border-top:1px solid var(--line);
}
.metric-item .num{
  display:block;
  font-size:26px;font-weight:700;color:var(--primary-dark);line-height:1.2;
}
.metric-item .num small{font-size:13px;font-weight:600;color:var(--ink-2);margin-left:2px;}
.metric-item .lab{font-size:13px;color:var(--ink-2);}
.hero-figure{
  position:relative;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  overflow:hidden;
  box-shadow:var(--shadow-lg);
  background:var(--bg-alt);
}
.hero-figure img{width:100%;height:320px;object-fit:cover;}
.hero-figure .cap{
  position:absolute;left:0;right:0;bottom:0;
  padding:16px 18px;
  background:rgba(18,51,47,.82);
  color:#EAF2F0;
  font-size:13px;
  line-height:1.7;
}
.hero-figure .cap strong{color:#fff;display:block;font-size:14px;margin-bottom:2px;}

/* ============ 两栏正文区 ============ */
.section{padding:var(--sp-8) 0;}
.section.alt{background:var(--bg-alt);}
.layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 348px;
  gap:40px;
  align-items:start;
}
.content-col > * + *{margin-top:26px;}
.block-title{
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.35;
  font-weight:700;
  color:var(--ink);
  margin-bottom:14px;
  word-spacing:.04em;
}
.block-lead{
  font-size:16px;
  color:var(--ink-2);
  line-height:1.85;
  max-width:56em;
  margin-bottom:28px;
}
.prose p{color:var(--ink-2);line-height:1.9;margin-bottom:1.15em;}
.prose p:last-child{margin-bottom:0;}
.prose strong{color:var(--ink);font-weight:600;}

/* 功能条目（单列横条卡） */
.func-list{display:grid;gap:16px;}
.func-card{
  display:grid;
  grid-template-columns:64px minmax(0,1fr);
  gap:20px;
  padding:24px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.func-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:rgba(14,122,114,.32);}
.func-card:nth-child(even){margin-left:34px;}
.func-no{
  width:64px;height:64px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--primary-light);
  color:var(--primary-dark);
  font-size:20px;font-weight:700;
}
.func-card:nth-child(even) .func-no{background:rgba(200,112,60,.13);color:var(--accent);}
.func-body h3{
  font-size:20px;line-height:1.5;font-weight:600;color:var(--ink);
  margin-bottom:8px;
}
.func-body p{font-size:15px;color:var(--ink-2);line-height:1.85;margin-bottom:12px;}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  font-size:12px;
  padding:3px 10px;
  border-radius:var(--r-pill);
  background:var(--bg-alt);
  color:var(--ink-2);
  border:1px solid var(--line);
}
.chip.on{background:var(--primary-light);color:var(--primary-dark);border-color:rgba(14,122,114,.22);}

/* 黏性侧栏 */
.side-col{position:sticky;top:96px;display:grid;gap:20px;}
.side-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--shadow-sm);
}
.side-card.deep{
  background:var(--deep);
  border-color:var(--deep);
  color:#E7F0EE;
}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:14px;color:var(--ink);}
.side-card.deep h3{color:#fff;}
.side-card p{font-size:14px;color:var(--ink-2);line-height:1.8;margin-bottom:16px;}
.side-card.deep p{color:#BBD3CF;}
.side-list{display:grid;gap:2px;margin-bottom:18px;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;
  border-radius:9px;
  font-size:14.5px;
  color:var(--ink);
  transition:background-color .18s ease,color .18s ease;
}
.side-list a:hover{background:var(--primary-light);color:var(--primary-dark);}
.side-list a .arw{color:var(--primary);font-size:13px;}
.side-meta{font-size:13px;color:var(--ink-2);line-height:1.9;}
.side-meta b{color:var(--ink);}
.side-card.deep .side-meta{color:#BBD3CF;}
.side-card.deep .side-meta b{color:#fff;}

/* ============ 上手流程 ============ */
.flow{
  display:grid;
  grid-template-columns:320px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.flow-head h2{margin-bottom:14px;}
.flow-head p{color:var(--ink-2);font-size:15.5px;line-height:1.85;}
.timeline{
  position:relative;
  padding-left:28px;
  border-left:2px solid rgba(14,122,114,.22);
  display:grid;gap:26px;
}
.timeline li{position:relative;}
.timeline li::before{
  content:"";
  position:absolute;
  left:-35px;top:8px;
  width:12px;height:12px;
  border-radius:50%;
  background:var(--primary);
  border:3px solid var(--bg-alt);
  box-shadow:0 0 0 2px rgba(14,122,114,.18);
}
.timeline h3{font-size:17px;font-weight:600;color:var(--ink);margin-bottom:6px;}
.timeline p{font-size:14.5px;color:var(--ink-2);line-height:1.85;}

/* ============ 图文说明块 ============ */
.split{
  display:grid;
  grid-template-columns:minmax(0,1fr) 420px;
  gap:48px;
  align-items:center;
}
.split.rev{grid-template-columns:420px minmax(0,1fr);}
.split.rev .split-media{order:-1;}
.split-media{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-md);
  background:var(--bg-alt);
}
.split-media img{width:100%;height:300px;object-fit:cover;}
.check-list{display:grid;gap:14px;margin-top:18px;}
.check-list li{
  display:grid;
  grid-template-columns:24px minmax(0,1fr);
  gap:12px;
  font-size:15px;
  color:var(--ink-2);
  line-height:1.8;
}
.check-list li b{color:var(--ink);font-weight:600;display:block;margin-bottom:2px;}
.tick{
  width:22px;height:22px;border-radius:50%;
  background:var(--primary-light);
  color:var(--primary-dark);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;
  margin-top:4px;
}

/* ============ FAQ ============ */
.faq-grid{
  display:grid;
  grid-template-columns:340px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.faq-side{position:sticky;top:96px;}
.faq-side h2{margin-bottom:14px;}
.faq-side p{color:var(--ink-2);font-size:15px;line-height:1.85;margin-bottom:20px;}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:12px;
  padding:0 22px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:rgba(14,122,114,.3);}
.faq-item[open]{box-shadow:var(--shadow-md);border-color:rgba(14,122,114,.35);}
.faq-item summary{
  list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;
  font-size:16px;font-weight:600;color:var(--ink);
  cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .caret{
  flex:0 0 22px;
  width:22px;height:22px;
  position:relative;
  transition:transform .18s ease;
}
.faq-item summary .caret::before,
.faq-item summary .caret::after{
  content:"";position:absolute;top:50%;left:50%;
  width:11px;height:2px;border-radius:2px;
  background:var(--primary);
  transform:translate(-50%,-50%);
  transition:transform .18s ease;
}
.faq-item summary .caret::after{transform:translate(-50%,-50%) rotate(90deg);}
.faq-item[open] summary{color:var(--primary-dark);}
.faq-item[open] summary .caret{transform:rotate(180deg);}
.faq-item[open] summary .caret::after{transform:translate(-50%,-50%) rotate(0deg);opacity:0;}
.faq-answer{
  font-size:15px;
  color:var(--ink-2);
  line-height:1.85;
  padding:0 0 20px;
  border-top:1px solid var(--line);
  padding-top:14px;
}

/* ============ 尾部 CTA ============ */
.tail-cta{
  background:var(--deep);
  color:#fff;
  padding:var(--sp-7) 0;
}
.tail-cta .inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.tail-cta h2{
  font-size:clamp(22px,2.4vw,30px);
  line-height:1.4;
  font-weight:700;
  color:#fff;
  margin-bottom:8px;
}
.tail-cta p{color:#BBD3CF;font-size:15.5px;line-height:1.8;max-width:44em;}
.tail-cta .btn-primary{background:#fff;color:var(--primary-dark);}
.tail-cta .btn-primary:hover{background:var(--primary-light);color:var(--primary-dark);}
.tail-cta .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4);}
.tail-cta .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}

/* ============ 页脚 ============ */
.site-footer{background:var(--deep);color:#BBD3CF;padding:64px 0 28px;margin-top:0;}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:40px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-main{color:#fff;}
.footer-brand .logo-sub{color:#9CBCB7;}
.footer-brand p{font-size:14px;line-height:1.85;color:#9CBCB7;max-width:32em;}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:#9CBCB7;transition:color .18s ease;}
.footer-col a:hover{color:#8FD3C9;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#84A29D;
}
.footer-bottom .host{color:#84A29D;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:28px;bottom:28px;
  z-index:80;
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 24px;
  border-radius:var(--r-pill);
  background:var(--primary-dark);
  color:#fff;
  font-size:15px;font-weight:600;
  box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background-color .18s ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--primary);color:#fff;}
.float-bar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:80;
  background:var(--deep);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  align-items:center;justify-content:space-between;gap:14px;
  box-shadow:0 -6px 20px rgba(18,42,40,.22);
}
.float-bar span{color:#E7F0EE;font-size:13.5px;line-height:1.5;}
.float-bar .btn{padding:10px 18px;font-size:14px;background:var(--primary);color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero-grid{grid-template-columns:minmax(0,1fr) 380px;gap:32px;}
  .layout{grid-template-columns:minmax(0,1fr) 312px;gap:28px;}
  .split,.split.rev{grid-template-columns:minmax(0,1fr) 340px;gap:32px;}
  .faq-grid{grid-template-columns:280px minmax(0,1fr);gap:32px;}
}
@media (max-width:991px){
  .nav-wrap{height:64px;}
  .main-nav{
    position:fixed;
    top:0;right:0;
    width:280px;height:100vh;
    background:var(--bg);
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:88px 20px 28px;
    box-shadow:-16px 0 40px rgba(18,42,40,.18);
    transform:translateX(105%);
    transition:transform .25s ease;
    z-index:70;
    margin-left:0;
  }
  .main-nav.open{transform:translateX(0);}
  .nav-link{padding:13px 14px;font-size:16px;}
  .nav-link::after{display:none;}
  .nav-link.active{background:var(--primary-light);}
  .nav-cta.desk{display:none;}
  .nav-toggle{display:block;z-index:80;}
  .topbar-inner{flex-wrap:nowrap;}
  .topbar-note{display:none;}
  .topbar-host{display:none;}
  .topbar-actions{margin-left:auto;}

  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-figure img{height:260px;}
  .layout{grid-template-columns:1fr;}
  .side-col{position:static;grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow{grid-template-columns:1fr;gap:28px;}
  .split,.split.rev{grid-template-columns:1fr;gap:26px;}
  .split.rev .split-media{order:0;}
  .faq-grid{grid-template-columns:1fr;gap:24px;}
  .faq-side{position:static;}
  .func-card:nth-child(even){margin-left:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .float-cta{display:none;}
  .float-bar{display:flex;}
  body{padding-bottom:72px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .page-hero{padding:32px 0 44px;}
  .hero-sub{font-size:16px;}
  .hero-figure img{height:210px;}
  .metric-bar{grid-template-columns:repeat(3,1fr);gap:8px;}
  .metric-item .num{font-size:22px;}
  .func-card{grid-template-columns:52px minmax(0,1fr);gap:14px;padding:18px;}
  .func-no{width:52px;height:52px;font-size:18px;border-radius:10px;}
  .func-body h3{font-size:18px;}
  .side-col{grid-template-columns:1fr;}
  .side-card{padding:18px;}
  .split-media img{height:220px;}
  .timeline{padding-left:22px;}
  .timeline li::before{left:-30px;}
  .tail-cta{padding:56px 0;}
  .tail-cta .inner{flex-direction:column;align-items:flex-start;gap:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{justify-content:flex-start;}
}
@media (max-width:480px){
  .page-hero h1{font-size:28px;}
  .block-title{font-size:23px;}
  .metric-bar{grid-template-columns:1fr 1fr;}
  .metric-item:last-child{display:none;}
  .hero-actions .btn{width:100%;}
  .func-card{grid-template-columns:1fr;gap:12px;}
  .func-no{width:44px;height:44px;font-size:16px;}
  .faq-item{padding:0 16px;}
  .faq-item summary{font-size:15px;padding:15px 0;}
}