/* roulang page: index */
:root{
  --brand:#0E7C6B;
  --brand-dark:#0A5A4E;
  --brand-soft:#E6F2EF;
  --accent:#E06A45;
  --ink:#121B19;
  --ink-soft:#5C6B68;
  --paper:#F6F5F1;
  --paper-2:#FFFFFF;
  --line:#E3E2DB;
  --deep:#0E2B27;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(16,27,25,.06);
  --sh-2:0 10px 28px rgba(16,27,25,.10);
  --nav-h:66px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",Inter,system-ui,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
p{margin-bottom:1.15em}
p:last-child{margin-bottom:0}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
::selection{background:var(--brand-soft);color:var(--brand-dark)}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:1024px){.container{padding-left:32px;padding-right:32px}}

section[id]{scroll-margin-top:88px}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--deep);color:#DCE9E6;font-size:13px;line-height:36px;height:36px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-domain{font-weight:600;letter-spacing:.02em;color:#fff;white-space:nowrap}
.topbar-mid{color:#9FB6B1;text-align:center;flex:1 1 auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar-link{color:#fff;white-space:nowrap;border-bottom:1px solid rgba(255,255,255,.35);transition:border-color .18s var(--ease)}
.topbar-link:hover{border-color:#fff}
@media (max-width:767px){.topbar-mid{display:none}}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;background:var(--paper-2);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 1px 0 var(--line),0 6px 18px rgba(16,27,25,.05)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{
  width:30px;height:30px;border-radius:9px;background:linear-gradient(145deg,var(--brand),var(--brand-dark));
  display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:14px;font-weight:700;flex:0 0 auto;
}
.brand-name{color:var(--ink)}
.brand-name .kw{color:var(--brand)}
.nav-menu{display:none;align-items:center;gap:4px}
@media (min-width:1024px){.nav-menu{display:flex}}
.nav-item{
  position:relative;padding:20px 14px;font-size:15px;color:var(--ink);
  transition:color .18s var(--ease);white-space:nowrap;
}
.nav-item::after{
  content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.nav-item:hover{color:var(--brand)}
.nav-item:hover::after{transform:scaleX(1)}
.nav-item.active{color:var(--brand);font-weight:600}
.nav-item.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-cta{display:none}
@media (min-width:1024px){.nav-cta{display:inline-flex}}
.hamburger{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
  transition:background .18s var(--ease),border-color .18s var(--ease);
}
.hamburger:hover{background:var(--brand-soft);border-color:#CFE4DF}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s var(--ease),opacity .2s var(--ease)}
@media (min-width:1024px){.hamburger{display:none}}

/* ============ 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;cursor:pointer;white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(16,27,25,.10)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 10px 24px rgba(14,124,107,.24)}
.btn-primary:active{transform:translateY(0);box-shadow:0 1px 2px rgba(16,27,25,.10)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);border-color:#CFE4DF}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#C85836;transform:translateY(-1px);box-shadow:0 10px 24px rgba(224,106,69,.26)}
.btn-on-deep{background:#fff;color:var(--brand-dark)}
.btn-on-deep:hover{background:var(--brand-soft);transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.7)}
.btn-sm{padding:9px 16px;font-size:14px}

/* ============ 文字链 ============ */
.tlink{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14.5px;font-weight:600;
  transition:color .18s var(--ease);
}
.tlink .arw{transition:transform .18s var(--ease)}
.tlink:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px}
.tlink:hover .arw{transform:translateX(3px)}
.tlink-light{color:#8FD8C9}
.tlink-light:hover{color:#fff}

/* ============ 通用排版 ============ */
.sec{padding:88px 0}
.sec-tight{padding:56px 0}
@media (max-width:767px){
  .sec{padding:56px 0}
  .sec-tight{padding:40px 0}
}
.sec-alt{background:var(--brand-soft)}
.sec-white{background:var(--paper-2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px}
.sec-title{
  position:relative;padding-left:16px;font-size:clamp(22px,3vw,32px);line-height:1.35;font-weight:700;letter-spacing:-.01em;
  color:var(--ink);
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:2px;background:var(--brand);
}
.sec-lead{color:var(--ink-soft);font-size:16px;max-width:760px;margin-top:16px}
.sec-head{margin-bottom:44px}
@media (max-width:767px){.sec-head{margin-bottom:30px}}

/* ============ Hero ============ */
.hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center 30%;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(14,43,39,.92) 0%,rgba(14,43,39,.78) 46%,rgba(14,43,39,.58) 100%);
}
.hero-inner{position:relative;z-index:2;padding:76px 0 84px}
@media (max-width:767px){.hero-inner{padding:52px 0 60px}}
.hero-grid{display:grid;gap:48px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:56px}}
.hero h1{
  font-size:clamp(30px,5vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.01em;color:#fff;
}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.8;color:#C9DED9;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-trust{margin-top:34px;display:flex;flex-wrap:wrap;gap:10px 22px;padding-top:22px;border-top:1px solid rgba(255,255,255,.16)}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:13.5px;color:#B9D2CC}
.dot{width:6px;height:6px;border-radius:999px;background:var(--accent);flex:0 0 auto}
.hero-visual{
  position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid rgba(255,255,255,.16);
  box-shadow:0 24px 60px rgba(0,0,0,.32);background:rgba(255,255,255,.05);
}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;object-position:center 40%}
.hero-badge{
  position:absolute;left:18px;bottom:18px;display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.94);color:var(--deep);font-size:13px;font-weight:600;
  padding:8px 14px;border-radius:999px;backdrop-filter:blur(4px);
}
.hero-badge i{width:7px;height:7px;border-radius:999px;background:var(--brand);display:inline-block}

/* ============ 卡片 ============ */
.card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:26px;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D6DED9}
.card h3{font-size:19px;font-weight:600;line-height:1.5;margin-bottom:10px}
.card p{color:var(--ink-soft);font-size:15px;line-height:1.8}
.icon-box{
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.icon-box svg{width:22px;height:22px;stroke-width:1.6}
.bento-main{background:linear-gradient(160deg,#0E2B27,#134A41);border-color:#134A41;color:#fff}
.bento-main h3{color:#fff;font-size:22px}
.bento-main p{color:#B8D2CC}
.bento-main .icon-box{background:rgba(255,255,255,.12);color:#8FD8C9}
.bento-wide{display:grid;gap:20px;align-items:center}
@media (min-width:768px){.bento-wide{grid-template-columns:1.4fr 1fr}}
.bento-wide .card-list{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--brand-dark);
  background:var(--brand-soft);border-radius:999px;padding:6px 13px;font-weight:500;
}

/* ============ 交错图文 ============ */
.demo-row{display:grid;gap:36px;align-items:center}
@media (min-width:1024px){
  .demo-row{grid-template-columns:1fr 1fr;gap:60px}
  .demo-row.reverse .demo-media{order:2}
}
.demo-media{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1);background:#fff}
.demo-media img{width:100%;object-fit:cover}
.ratio-16-10 img{aspect-ratio:16/10;object-position:center 35%}
.ratio-4-3 img{aspect-ratio:4/3;object-position:center 60%}
.demo-row h2{font-size:clamp(22px,3vw,30px);line-height:1.35;font-weight:700;margin-bottom:16px}
.check-list{margin-top:22px;display:grid;gap:12px}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--ink-soft);line-height:1.75}
.check-list li::before{
  content:"";flex:0 0 auto;width:7px;height:7px;border-radius:999px;background:var(--brand);margin-top:.62em;
}

/* ============ 深色证据区 ============ */
.proof{
  position:relative;background-color:var(--deep);color:#fff;overflow:hidden;
}
.proof::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.20;
}
.proof-inner{position:relative;z-index:2}
.proof .sec-title{color:#fff}
.proof .sec-title::before{background:#8FD8C9}
.proof .sec-lead{color:#AEC7C2}
.stat-grid{display:grid;gap:22px;grid-template-columns:repeat(2,1fr);margin-bottom:48px}
@media (min-width:768px){.stat-grid{grid-template-columns:repeat(4,1fr)}}
.stat{
  border:1px solid rgba(255,255,255,.14);border-radius:var(--r-card);padding:24px 20px;
  background:rgba(255,255,255,.04);
}
.stat b{display:block;font-size:clamp(26px,3.4vw,36px);font-weight:700;line-height:1.2;color:#fff;letter-spacing:-.02em}
.stat span{display:block;margin-top:8px;font-size:13.5px;color:#9FBAB4;line-height:1.6}
.quote-grid{display:grid;gap:20px}
@media (min-width:768px){.quote-grid{grid-template-columns:repeat(3,1fr)}}
.quote{
  border:1px solid rgba(255,255,255,.14);border-radius:var(--r-card);padding:24px;background:rgba(255,255,255,.04);
}
.quote p{color:#D5E5E1;font-size:15px;line-height:1.8}
.quote cite{display:block;margin-top:16px;font-style:normal;font-size:13.5px;color:#8FD8C9}

/* ============ 价格 ============ */
.price-grid{display:grid;gap:22px}
@media (min-width:768px){.price-grid{grid-template-columns:repeat(3,1fr);align-items:start}}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px 24px;
  box-shadow:var(--sh-1);position:relative;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.price-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.price-card.feat{border:2px solid var(--brand);box-shadow:0 14px 34px rgba(14,124,107,.14)}
@media (min-width:768px){.price-card.feat{margin-top:-14px}}
.price-name{font-size:17px;font-weight:600}
.price-amount{margin:16px 0 6px;font-size:30px;font-weight:700;letter-spacing:-.02em}
.price-amount small{font-size:14px;font-weight:500;color:var(--ink-soft);margin-left:6px}
.price-desc{font-size:14px;color:var(--ink-soft);min-height:44px}
.price-list{margin:22px 0 26px;display:grid;gap:12px;border-top:1px solid var(--line);padding-top:22px}
.price-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-soft);line-height:1.7}
.price-list li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;border-radius:999px;background:var(--brand);margin-top:.65em;
}
.price-card .btn{width:100%}
.price-note{margin-top:26px;font-size:13px;color:var(--ink-soft);text-align:center}

/* ============ 内容卡片（CMS） ============ */
.news-grid{display:grid;gap:24px}
@media (min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D6DED9}
.post-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;object-position:center}
.post-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1 1 auto}
.post-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-soft);margin-bottom:12px}
.badge{
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;padding:3px 10px;
  border-radius:999px;background:var(--brand-soft);color:var(--brand-dark);line-height:1.6;
}
.badge-accent{background:var(--accent);color:#fff}
.post-title{
  font-size:17px;font-weight:600;line-height:1.55;color:var(--ink);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s var(--ease);
}
.post-card:hover .post-title{color:var(--brand)}
.post-excerpt{
  font-size:14px;color:var(--ink-soft);line-height:1.8;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding-top:14px;font-size:13px;color:var(--ink-soft)}
.empty-state{
  min-height:180px;border:1px dashed #CFD8D4;border-radius:var(--r-card);background:var(--paper);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center;padding:28px;
}
.empty-state p{color:var(--ink-soft);font-size:15px;margin:0}
.empty-icon{
  width:44px;height:44px;border-radius:999px;border:1px solid #CFD8D4;background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--brand);
}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:880px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  overflow:hidden;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.faq-item[open]{border-color:#CFE4DF;box-shadow:var(--sh-2)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 56px 20px 24px;position:relative;
  font-size:17px;font-weight:600;line-height:1.6;color:var(--ink);
  transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary::after{
  content:"";position:absolute;right:24px;top:50%;width:12px;height:12px;margin-top:-6px;
  background:
    linear-gradient(var(--brand),var(--brand)) center/12px 2px no-repeat,
    linear-gradient(var(--brand),var(--brand)) center/2px 12px no-repeat;
  transition:transform .22s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(90deg)}
.faq-answer{
  padding:0 24px 22px;background:var(--brand-soft);font-size:15px;line-height:1.85;color:#254A44;
}
.faq-answer-inner{padding-top:18px;border-top:1px solid #CFE4DF;margin-top:-2px}
.faq-answer p{margin-bottom:.9em}

/* ============ 底部 CTA ============ */
.bottom-cta{
  position:relative;background-color:var(--deep);color:#fff;overflow:hidden;border-top:1px solid rgba(255,255,255,.12);
}
.bottom-cta::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;opacity:.18;
}
.bottom-cta-inner{position:relative;z-index:2;padding:72px 0;display:grid;gap:26px;align-items:center}
@media (min-width:1024px){.bottom-cta-inner{grid-template-columns:1.5fr auto;padding:80px 0}}
.bottom-cta h2{font-size:clamp(22px,3vw,30px);line-height:1.35;font-weight:700;color:#fff}
.bottom-cta p{margin-top:14px;color:#AEC7C2;font-size:16px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-footer{background:var(--deep);color:#B9CEC9;font-size:14px;line-height:1.8}
.footer-top{padding:64px 0 40px}
.footer-grid{display:grid;gap:34px;grid-template-columns:1fr}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-brand .kw{color:#8FD8C9}
.footer-desc{color:#93ADA8;font-size:14px;line-height:1.85;max-width:330px}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-links{display:grid;gap:11px}
.footer-links a{color:#A7BFBA;transition:color .18s var(--ease)}
.footer-links a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0 30px;display:grid;gap:12px;font-size:13px;color:#87A29D}
@media (min-width:768px){.footer-bottom{grid-template-columns:1fr auto;align-items:center}}
.footer-bottom .fb-right{display:flex;flex-wrap:wrap;gap:18px}
@media (max-width:767px){.site-footer{padding-bottom:64px}}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:55;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent);color:#fff;font-size:15px;font-weight:600;
  padding:13px 24px;border-radius:999px;box-shadow:0 10px 26px rgba(224,106,69,.34);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .25s var(--ease),transform .25s var(--ease),background .18s var(--ease);
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{background:#C85836;transform:translateY(-1px);box-shadow:0 14px 30px rgba(224,106,69,.4)}
@media (max-width:767px){
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;height:56px;justify-content:center;
    transform:translateY(100%);box-shadow:0 -6px 20px rgba(16,27,25,.14);font-size:15px;
  }
  .float-cta.show{transform:translateY(0)}
}

/* ============ 移动端抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:60;background:#fff;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
  display:flex;flex-direction:column;
}
.drawer.open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);padding:0 20px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;
  font-size:20px;line-height:1;color:var(--ink);display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{background:var(--brand-soft)}
.drawer-menu{padding:16px 20px 24px;display:grid;gap:4px;overflow-y:auto}
.drawer-menu a{
  padding:15px 14px;border-radius:12px;font-size:16px;font-weight:500;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer-menu a.active{color:var(--brand);background:var(--brand-soft);border-bottom-color:transparent;font-weight:600}
.drawer-foot{padding:20px;border-top:1px solid var(--line);margin-top:auto;display:grid;gap:12px}
.drawer-foot .domain{font-size:13px;color:var(--ink-soft)}
@media (min-width:1024px){.drawer{display:none}}
body.drawer-open{overflow:hidden}

/* roulang page: article */
:root{
  --brand:#0E7C6B;
  --brand-dark:#0A5A4E;
  --brand-soft:#E6F2EF;
  --accent:#E06A45;
  --ink:#121B19;
  --ink-soft:#5C6B68;
  --paper:#F6F5F1;
  --paper-2:#FFFFFF;
  --line:#E3E2DB;
  --deep:#0E2B27;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(16,27,25,.06);
  --shadow-2:0 10px 28px rgba(16,27,25,.10);
  --font: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",Inter,system-ui,sans-serif;
  --nav-h:66px;
}
*,*::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:1.85;
  color:var(--ink);
  background:var(--paper);
  padding-bottom:56px;
  font-variant-numeric:tabular-nums;
}
@media(min-width:768px){body{padding-bottom:0}}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .18s ease}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

.container{
  width:100% !important;
  max-width:1200px !important;
  margin:0 auto !important;
  padding-left:20px !important;
  padding-right:20px !important;
}
@media(min-width:768px){
  .container{padding-left:32px !important;padding-right:32px !important}
}

/* 顶部信息条 */
.topbar{background:var(--deep);color:#fff;font-size:13px;line-height:36px;height:36px;overflow:hidden}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px}
.tb-domain{font-weight:600;letter-spacing:.02em;color:rgba(255,255,255,.92)}
.tb-mid{display:none;color:rgba(255,255,255,.72)}
.tb-link{color:#fff;border-bottom:1px solid rgba(255,255,255,.4);padding-bottom:1px}
.tb-link:hover{color:#8FDCCB;border-bottom-color:#8FDCCB}
@media(min-width:1024px){.tb-mid{display:block}}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid transparent;transition:border-color .2s ease,box-shadow .2s ease}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 0 var(--line)}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:18px;height:var(--nav-h)}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
.brand-mark{width:32px;height:32px;border-radius:9px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:15px;font-weight:700;flex:none}
.brand .kw{color:var(--brand)}
.nav-menu{display:none;align-items:center;gap:2px}
@media(min-width:1024px){.nav-menu{display:flex}}
.nav-item{position:relative;font-size:15px;color:var(--ink);padding:9px 12px;border-radius:8px;transition:color .18s ease}
.nav-item::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .18s ease}
.nav-item:hover{color:var(--brand)}
.nav-item:hover::after{transform:scaleX(1)}
.nav-item.active{color:var(--brand);font-weight:600}
.nav-item.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}
.menu-toggle{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer}
.menu-toggle span{display:block;width:18px;height:2px;margin:0 auto;background:var(--ink);border-radius:2px}
@media(min-width:1024px){.menu-toggle{display:none}}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-btn);font-weight:600;font-size:15px;padding:11px 20px;border:1px solid transparent;cursor:pointer;transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 8px 20px rgba(14,124,107,.22)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line)}
.btn-ghost:hover{background:var(--brand-soft);border-color:#CDE3DE}
.btn-light{background:#fff;color:var(--deep)}
.btn-light:hover{background:#E6F2EF;transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-outline-light:hover{background:rgba(255,255,255,.12)}

/* 文字链 */
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px}
.link-more .arrow{transition:transform .18s ease}
.link-more:hover{text-decoration:underline;text-underline-offset:3px}
.link-more:hover .arrow{transform:translateX(2px)}

/* 徽章 */
.badge{display:inline-flex;align-items:center;border-radius:999px;background:var(--brand-soft);color:var(--brand-dark);font-size:12px;font-weight:600;padding:4px 12px;letter-spacing:.02em}
.badge-accent{background:var(--accent);color:#fff}

/* 文章头部 */
.article-hero{position:relative;background:var(--deep);color:#fff;overflow:hidden}
.article-hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.32}
.article-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(14,43,39,.92) 0%,rgba(14,43,39,.72) 100%)}
.article-hero .container{position:relative;z-index:1;padding-top:34px;padding-bottom:44px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);list-style:none}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.42)}
.breadcrumb a{color:rgba(255,255,255,.82)}
.breadcrumb a:hover{color:#8FDCCB}
.article-hero h1{margin-top:22px;font-size:clamp(30px,5vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.01em;color:#fff;max-width:22em}
.hero-sub{margin-top:16px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.78);max-width:40em}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:24px;font-size:13px;color:rgba(255,255,255,.7)}
.meta-row .badge{background:rgba(255,255,255,.14);color:#B9E9DE}
.meta-row time{display:inline-flex;align-items:center;gap:6px}
.meta-divider{width:1px;height:12px;background:rgba(255,255,255,.24)}

/* 正文 */
.article-section{padding:52px 0 8px}
@media(min-width:768px){.article-section{padding:72px 0 12px}}
.article-body{max-width:760px;margin:0 auto;font-size:17px;line-height:1.9;color:#1B2523}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.15em}
.article-body h2{
  font-size:clamp(22px,3vw,28px);
  line-height:1.35;
  font-weight:700;
  color:var(--ink);
  margin:40px 0 16px;
  padding-left:14px;
  border-left:3px solid var(--brand);
}
.article-body h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink);margin:28px 0 12px}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;color:var(--brand-dark)}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.2em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.45em 0}
.article-body ul li::marker{color:var(--brand)}
.article-body ol li::marker{color:var(--brand);font-weight:600}
.article-body strong{font-weight:700;color:var(--ink)}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-dark)}
.article-body blockquote{
  margin:24px 0;
  padding:14px 18px;
  background:var(--brand-soft);
  border-left:3px solid var(--brand);
  border-radius:0 10px 10px 0;
  color:#22403B;
  font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-img);margin:22px 0;width:100%;object-fit:cover}
.article-body figure{margin:22px 0}
.article-body figcaption{font-size:13px;color:var(--ink-soft);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15.5px;background:#fff;border-radius:12px;overflow:hidden;box-shadow:var(--shadow-1)}
.article-body thead th{background:var(--brand-soft);color:var(--brand-dark);font-weight:600;text-align:left;padding:11px 14px;border-bottom:1px solid #CDE3DE}
.article-body td{padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.article-body tbody tr:nth-child(even){background:#FAFAF7}
.article-body tbody tr:last-child td{border-bottom:none}
.article-body hr{border:none;border-top:1px solid var(--line);margin:34px 0}

/* 空态 */
.empty-state{
  border:1px dashed #C9D6D2;
  background:var(--paper-2);
  border-radius:var(--radius-card);
  padding:44px 24px;
  text-align:center;
}
.empty-icon{width:52px;height:52px;margin:0 auto 16px;border-radius:14px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-size:22px;font-weight:700}
.empty-title{font-size:20px;font-weight:700;margin-bottom:10px}
.empty-desc{font-size:15px;color:var(--ink-soft);line-height:1.85;max-width:32em;margin:0 auto 22px}

/* 相关推荐 */
.rel-section{padding:56px 0;background:var(--paper-2);border-top:1px solid var(--line)}
@media(min-width:768px){.rel-section{padding:76px 0}}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:30px}
.sec-head h2{font-size:clamp(22px,3vw,30px);line-height:1.35;font-weight:700}
.sec-lead{margin-top:10px;font-size:15.5px;color:var(--ink-soft);max-width:44em;line-height:1.8}
.rel-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media(min-width:768px){.rel-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.rel-grid{grid-template-columns:repeat(3,1fr)}}
.rel-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFE0DB}
.rel-card figure{margin:0;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft)}
.rel-card img{width:100%;height:100%;object-fit:cover;object-position:center;transition:transform .35s ease}
.rel-card:hover img{transform:scale(1.03)}
.rel-card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-card-body h3{font-size:18px;line-height:1.5;font-weight:600}
.rel-card-body p{font-size:14.5px;line-height:1.85;color:var(--ink-soft)}
.rel-card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-soft)}

/* 返回入口 */
.back-section{padding:0 0 64px}
.back-wrap{max-width:760px;margin:0 auto;text-align:center;border-top:1px solid var(--line);padding-top:30px}
.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:600;font-size:15px}
.back-link .arrow{transition:transform .18s ease}
.back-link:hover{text-decoration:underline;text-underline-offset:3px}
.back-link:hover .arrow{transform:translateX(2px)}
.back-hint{margin-top:10px;font-size:13px;color:var(--ink-soft)}

/* 底部 CTA */
.cta-band{background:var(--deep);color:#fff;position:relative;overflow:hidden;border-top:1px solid var(--line)}
.cta-band::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.webp');background-size:cover;background-position:center;opacity:.22}
.cta-band .container{position:relative;z-index:1;padding-top:56px;padding-bottom:56px;display:flex;flex-direction:column;gap:24px}
@media(min-width:1024px){
  .cta-band .container{flex-direction:row;align-items:center;justify-content:space-between;padding-top:64px;padding-bottom:64px}
}
.cta-band h2{font-size:clamp(22px,3vw,32px);line-height:1.35;font-weight:700;color:#fff}
.cta-band p{margin-top:12px;font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.76);max-width:42em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* 页脚 */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72)}
.footer-top{padding:56px 0 36px !important}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.14)}
.footer-brand .kw{color:#8FDCCB}
.footer-desc{margin:0;font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);max-width:34em}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin:0 0 16px}
.footer-links{display:flex;flex-direction:column;gap:11px;font-size:14px}
.footer-links a{color:rgba(255,255,255,.7)}
.footer-links a:hover{color:#8FDCCB}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:18px !important;
  padding-bottom:26px !important;
  display:flex;flex-direction:column;gap:8px;
  font-size:13px;color:rgba(255,255,255,.55);
}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}
.fb-right{display:flex;flex-wrap:wrap;gap:16px}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:60;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent);color:#fff;font-weight:600;font-size:15px;
  padding:13px 22px;border-radius:999px;
  box-shadow:0 8px 22px rgba(224,106,69,.3);
  opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease,transform .18s ease,box-shadow .18s ease;
}
.float-cta.is-show{opacity:1;visibility:visible}
.float-cta:hover{transform:translateY(-1px);box-shadow:0 12px 28px rgba(224,106,69,.42)}
.float-cta:active{transform:translateY(0)}
@media(max-width:767px){
  .float-cta{
    left:0;right:0;bottom:0;height:56px;border-radius:0;
    justify-content:center;font-size:15.5px;padding:0;
    opacity:1;visibility:visible;box-shadow:0 -2px 14px rgba(16,27,25,.12);
  }
}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:80;background:#fff;
  transform:translateX(100%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:20px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;font-size:20px;line-height:1;cursor:pointer}
.drawer-nav{display:flex;flex-direction:column;padding:14px 0}
.drawer-nav a{font-size:16px;padding:14px 4px;border-bottom:1px solid #F1F0EA;color:var(--ink)}
.drawer-nav a.active{color:var(--brand);font-weight:600}
.drawer-cta{margin-top:20px;width:100%}
.drawer-note{margin-top:16px;font-size:13px;color:var(--ink-soft);line-height:1.8}
@media(min-width:1024px){.drawer{display:none}}

/* roulang page: category1 */
:root{
  --brand:#0E7C6B;
  --brand-dark:#0A5A4E;
  --brand-soft:#E6F2EF;
  --accent:#E06A45;
  --ink:#121B19;
  --ink-soft:#5C6B68;
  --paper:#F6F5F1;
  --paper-2:#FFFFFF;
  --line:#E3E2DB;
  --deep:#0E2B27;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(16,27,25,.06);
  --shadow-2:0 10px 28px rgba(16,27,25,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",Inter,system-ui,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16.5px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0}
section[id]{scroll-margin-top:88px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--deep);color:#fff;font-size:13px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px}
.topbar-left{color:rgba(255,255,255,.72);letter-spacing:.02em}
.topbar-mid{color:rgba(255,255,255,.86);display:none}
.topbar-right{color:#fff;font-weight:600;border-bottom:1px solid rgba(255,255,255,.4);padding-bottom:1px;transition:color .16s,border-color .16s}
.topbar-right:hover{color:#8FD8CB;border-color:#8FD8CB}
@media (min-width:768px){.topbar-mid{display:inline}}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:#fff;
  border-bottom:1px solid transparent;
  transition:border-color .2s,box-shadow .2s;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 2px 14px rgba(16,27,25,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:66px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{
  width:30px;height:30px;border-radius:9px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:15px;font-weight:700;flex:none;
}
.kw{color:var(--brand)}
.nav-menu{display:none;align-items:center;gap:26px}
.nav-item{
  position:relative;font-size:15px;color:var(--ink);padding:6px 0;
  transition:color .16s;
}
.nav-item::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:transparent;transition:background .18s;
}
.nav-item:hover{color:var(--brand)}
.nav-item:hover::after{background:var(--brand-soft)}
.nav-item.active{color:var(--brand);font-weight:600}
.nav-item.active::after{background:var(--brand)}
.header-actions{display:flex;align-items:center;gap:12px}
.menu-toggle{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  display:grid;place-items:center;background:#fff;transition:background .16s,border-color .16s;
}
.menu-toggle:hover{background:var(--brand-soft);border-color:var(--brand)}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
@media (min-width:1024px){
  .nav-menu{display:flex}
  .menu-toggle{display:none}
}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:70;background:#fff;
  transform:translateX(100%);transition:transform .26s ease;
  overflow-y:auto;padding:20px;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  display:grid;place-items:center;font-size:20px;line-height:1;color:var(--ink-soft);
}
.drawer-close:hover{background:var(--brand-soft);color:var(--brand)}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.drawer-link{
  padding:16px 4px;border-bottom:1px solid var(--line);font-size:16px;
  display:flex;align-items:center;justify-content:space-between;color:var(--ink);
}
.drawer-link.active{color:var(--brand);font-weight:600}
.drawer-link:hover{color:var(--brand)}
.drawer-actions{margin-top:26px;display:flex;flex-direction:column;gap:12px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);padding:12px 22px;font-size:15px;font-weight:600;
  border:1px solid transparent;transition:background .18s,color .18s,transform .18s,box-shadow .18s,border-color .18s;
  white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:none}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#C8552F;transform:translateY(-1px);box-shadow:0 10px 24px rgba(224,106,69,.28)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.38);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.7)}
.btn-sm{padding:9px 16px;font-size:14px}

/* ---------- 内页首屏 ---------- */
.page-hero{position:relative;background:var(--deep);color:#fff;overflow:hidden;padding:56px 0 64px}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center 35%;opacity:.45;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,43,39,.94) 0%,rgba(14,43,39,.80) 48%,rgba(14,43,39,.62) 100%);
}
.page-hero-inner{position:relative;z-index:2;max-width:840px}
.breadcrumb{font-size:13.5px;color:rgba(255,255,255,.72)}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.42)}
.breadcrumb a{transition:color .16s}
.breadcrumb a:hover{color:#8FD8CB}
.breadcrumb [aria-current]{color:#fff}
.page-hero h1{
  font-size:clamp(30px,5vw,46px);line-height:1.25;font-weight:700;
  letter-spacing:-.01em;margin:16px 0 14px;
}
.page-hero .lede{font-size:17px;line-height:1.8;color:rgba(255,255,255,.84);max-width:660px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:26px;
  font-size:14px;color:rgba(255,255,255,.76);
}
.hero-facts span{display:inline-flex;align-items:center;gap:8px}
.hero-facts span::before{content:"";width:6px;height:6px;border-radius:50%;background:#8FD8CB}

/* ---------- 分区 ---------- */
.section{padding:56px 0}
.section-compact{padding:44px 0}
.section-alt{background:var(--paper-2)}
.section-deep{background:var(--deep);color:#fff}
@media (min-width:768px){
  .section{padding:88px 0}
  .section-compact{padding:56px 0}
}
.section-head{max-width:720px;margin-bottom:34px}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand);
  border-left:3px solid var(--brand);padding-left:10px;margin-bottom:12px;line-height:1.4;
}
.section-title{font-size:clamp(22px,3vw,32px);line-height:1.35;font-weight:700;letter-spacing:-.01em}
.section-lede{margin-top:12px;color:var(--ink-soft);font-size:16px;line-height:1.8}

/* 概览两栏 */
.intro-split{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:900px){.intro-split{grid-template-columns:1.15fr .85fr;gap:48px}}
.intro-text p{color:var(--ink-soft);margin-bottom:1.15em}
.intro-text p:last-child{margin-bottom:0}
.number-list{list-style:none;counter-reset:nl;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px 26px;box-shadow:var(--shadow-1)}
.number-list li{counter-increment:nl;position:relative;padding:12px 0 12px 42px;border-top:1px solid var(--line);color:var(--ink-soft);font-size:15.5px;line-height:1.75}
.number-list li:first-child{border-top:0;padding-top:4px}
.number-list li::before{
  content:counter(nl,decimal-leading-zero);position:absolute;left:0;top:14px;
  width:26px;height:26px;border-radius:50%;background:var(--brand-soft);color:var(--brand-dark);
  font-size:12px;font-weight:700;display:grid;place-items:center;
}
.number-list li:first-child::before{top:6px}
.number-list strong{color:var(--ink);font-weight:600}

/* Bento 网格 */
.bento{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:720px){.bento{grid-template-columns:repeat(2,1fr)}.bento-main{grid-column:span 2}.bento-wide{grid-column:span 2}}
@media (min-width:1024px){.bento{grid-template-columns:repeat(3,1fr)}.bento-main{grid-column:span 2}.bento-wide{grid-column:span 3}}
.bento-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;
  transition:box-shadow .18s,transform .18s,border-color .18s;
}
.bento-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#D6D4CB}
.card-media{width:100%;aspect-ratio:16/10;object-fit:cover;object-position:center}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:19px;line-height:1.5;font-weight:600}
.card-body p{color:var(--ink-soft);font-size:15.5px;line-height:1.75}
.card-link{
  margin-top:auto;padding-top:8px;color:var(--brand);font-weight:600;font-size:14.5px;
  display:inline-flex;align-items:center;gap:6px;
}
.card-link .arrow{transition:transform .18s}
.card-link:hover .arrow{transform:translateX(4px)}
.card-link:hover{text-decoration:underline}
.icon-badge{
  width:40px;height:40px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;flex:none;
}
.bento-wide{display:grid;grid-template-columns:1fr}
@media (min-width:860px){.bento-wide{grid-template-columns:1fr 1fr}}
.bento-wide .card-media{height:100%;aspect-ratio:auto;min-height:250px;object-position:60% center}
.bento-wide .card-body{padding:28px 30px}

/* 能力对照 */
.compare{display:grid;grid-template-columns:1fr;gap:22px}
@media (min-width:820px){.compare{grid-template-columns:1fr 1fr;gap:26px}}
.compare-col{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 28px;box-shadow:var(--shadow-1)}
.compare-col h3{font-size:19px;font-weight:600;display:flex;align-items:center;gap:10px}
.compare-col .tag{
  font-size:12px;font-weight:600;border-radius:999px;padding:3px 10px;
  background:var(--brand-soft);color:var(--brand-dark);
}
.compare-col.alt .tag{background:#FCEAE3;color:#A8431F}
.compare-col .hint{color:var(--ink-soft);font-size:14.5px;margin-top:8px;line-height:1.7}
.check-list{list-style:none;margin-top:16px}
.check-list li{position:relative;padding:11px 0 11px 26px;border-top:1px solid var(--line);font-size:15.5px;color:var(--ink-soft);line-height:1.75}
.check-list li::before{
  content:"";position:absolute;left:0;top:22px;width:8px;height:8px;border-radius:50%;background:var(--brand);
}
.compare-col.alt .check-list li::before{background:var(--accent)}
.check-list strong{color:var(--ink);font-weight:600}

/* 表格 */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;box-shadow:var(--shadow-1)}
table.data-table{width:100%;border-collapse:collapse;min-width:660px;font-size:15px}
.data-table thead th{
  background:var(--brand-soft);color:var(--brand-dark);text-align:left;
  padding:14px 18px;font-weight:600;font-size:14.5px;white-space:nowrap;
}
.data-table tbody td{padding:14px 18px;border-top:1px solid var(--line);color:var(--ink-soft);line-height:1.7}
.data-table tbody tr:nth-child(even){background:#FAFAF7}
.data-table tbody td:first-child{color:var(--ink);font-weight:600;white-space:nowrap}

/* CTA 带 */
.cta-band{
  position:relative;overflow:hidden;background:var(--deep);color:#fff;border-radius:20px;
  padding:38px 28px;display:flex;flex-direction:column;gap:24px;align-items:flex-start;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;opacity:.28;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(14,43,39,.95),rgba(14,43,39,.68));
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:clamp(21px,2.6vw,28px);line-height:1.4;font-weight:700}
.cta-band p{color:rgba(255,255,255,.8);margin-top:10px;font-size:15.5px;line-height:1.8;max-width:600px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (min-width:900px){
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:46px 44px;gap:40px}
  .cta-actions{flex:none}
}

/* 浮动 CTA */
.float-cta{
  position:fixed;z-index:60;right:24px;bottom:24px;
  background:var(--accent);color:#fff;font-weight:600;font-size:15px;
  padding:13px 24px;border-radius:999px;box-shadow:0 10px 26px rgba(224,106,69,.32);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s,transform .24s,visibility .24s,background .18s;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{background:#C8552F;transform:translateY(-1px)}
.float-cta:focus-visible{outline:2px solid #fff;outline-offset:3px}
@media (max-width:640px){
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;height:56px;
    display:flex;align-items:center;justify-content:center;font-size:16px;
    transform:none;box-shadow:0 -6px 20px rgba(16,27,25,.12);
  }
  .float-cta.show{transform:none}
  body{padding-bottom:56px}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.78);margin-top:0;padding-top:56px}
.footer-top{padding-bottom:40px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:#fff;margin-bottom:14px}
.footer-brand .brand-mark{background:var(--brand);color:#fff}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.68);max-width:420px}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.72);transition:color .16s}
.footer-links a:hover{color:#8FD8CB}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding-top:18px;padding-bottom:26px;
  display:flex;flex-direction:column;gap:8px;font-size:13.5px;color:rgba(255,255,255,.58);
}
.fb-right{display:flex;flex-wrap:wrap;gap:16px}
@media (min-width:768px){
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}
}

/* roulang page: category2 */
:root{
  --brand:#0E7C6B;
  --brand-dark:#0A5A4E;
  --brand-soft:#E6F2EF;
  --accent:#E06A45;
  --ink:#121B19;
  --ink-soft:#5C6B68;
  --paper:#F6F5F1;
  --paper-2:#FFFFFF;
  --line:#E3E2DB;
  --deep:#0E2B27;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(16,27,25,.06);
  --shadow-2:0 10px 28px rgba(16,27,25,.10);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC','Inter',system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease, opacity .18s ease;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}

/* ---------- 顶部信息条 ---------- */
.topbar{height:36px;background:var(--deep);color:#fff;font-size:13px;line-height:36px;}
.topbar-inner{display:flex;align-items:center;gap:16px;height:36px;}
.topbar-domain{font-weight:600;letter-spacing:.02em;color:#DCEAE6;}
.topbar-note{flex:1;text-align:center;color:#9FBDB6;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-link{color:#fff;border-bottom:1px solid rgba(255,255,255,.35);}
.topbar-link:hover{color:#8FD6C7;border-color:#8FD6C7;}
@media (max-width:767px){.topbar-note{display:none;} .topbar-inner{justify-content:space-between;}}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:var(--paper-2);transition:box-shadow .2s ease;}
.site-header.scrolled{box-shadow:0 1px 0 var(--line), 0 8px 20px rgba(16,27,25,.06);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:66px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:-.01em;}
.brand-mark{
  width:30px;height:30px;border-radius:9px;background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
}
.brand-text{color:var(--ink);}
.brand-text .kw{color:var(--brand);}
.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-item{
  position:relative;display:inline-block;padding:8px 12px;font-size:14.5px;color:var(--ink);
  border-bottom:2px solid transparent;
}
.nav-item:hover{color:var(--brand);border-bottom-color:var(--brand-soft);}
.nav-item.active{color:var(--brand);font-weight:600;border-bottom-color:var(--brand);}
.nav-cta{display:flex;align-items:center;gap:12px;}
.hamburger{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;
  align-items:center;justify-content:center;cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.hamburger span::before,.hamburger span::after{
  content:'';position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand-soft);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--shadow-1);}
.btn-accent:hover{background:#C75733;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-sm{padding:9px 16px;font-size:14px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:#fff;overflow:hidden;
  background-color:var(--deep);
  background-image:linear-gradient(115deg, rgba(14,43,39,.90) 0%, rgba(14,43,39,.66) 55%, rgba(14,124,107,.62) 100%), url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center 30%;
}
.hero-inner{padding:52px 20px 64px;}
@media (min-width:768px){.hero-inner{padding:64px 32px 82px;}}
.crumbs{margin-bottom:22px;}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#A9C7C1;}
.crumbs li+li::before{content:'/';margin-right:8px;color:#6C8D87;}
.crumbs a{color:#DCEAE6;}
.crumbs a:hover{color:#8FD6C7;}
.crumbs [aria-current]{color:#8FD6C7;}
.hero-badge{
  display:inline-block;padding:5px 14px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(230,242,239,.16);color:#8FD6C7;border:1px solid rgba(143,214,199,.35);letter-spacing:.04em;
}
.hero h1{
  margin-top:18px;font-size:clamp(30px,5vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.01em;max-width:820px;
}
.hero-sub{margin-top:16px;font-size:clamp(15px,1.6vw,17.5px);line-height:1.8;color:#CDE0DC;max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:20px;margin-top:26px;font-size:13.5px;color:#A9C7C1;}
.hero-trust li{display:flex;align-items:center;gap:8px;}
.hero-trust li::before{content:'';width:6px;height:6px;border-radius:50%;background:#8FD6C7;flex:none;}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:88px 0;}}
.section--tight{padding:40px 0;}
@media (min-width:768px){.section--tight{padding:56px 0;}}
.section--soft{background:var(--brand-soft);}
.section-head{max-width:760px;}
.section-head h2{font-size:clamp(22px,3vw,32px);line-height:1.35;font-weight:700;position:relative;padding-left:14px;}
.section-head h2::before{content:'';position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--brand);}
.section-head p{margin-top:14px;color:var(--ink-soft);font-size:16px;line-height:1.85;}

/* ---------- 场景标签 ---------- */
.scene-tabs{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;
}
.scene-tab{
  padding:9px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:14.5px;color:var(--ink-soft);transition:all .18s ease;
}
.scene-tab:hover{border-color:var(--brand);color:var(--brand);}
.scene-tab.active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}

/* ---------- 场景交错 ---------- */
.scene-row{
  display:grid;grid-template-columns:1fr;gap:28px;align-items:center;
  padding:34px 0;border-bottom:1px solid var(--line);
}
.scene-row:last-of-type{border-bottom:none;}
@media (min-width:900px){
  .scene-row{grid-template-columns:1.05fr 1fr;gap:56px;padding:46px 0;}
  .scene-row.reverse .scene-media{order:2;}
}
.scene-media img{
  width:100%;border-radius:var(--radius-img);object-fit:cover;box-shadow:var(--shadow-1);
}
.scene-media.ratio-16-10 img{aspect-ratio:16/10;object-position:center 35%;}
.scene-media.ratio-4-3 img{aspect-ratio:4/3;object-position:center 60%;}
.scene-body .badge{
  display:inline-block;padding:4px 12px;border-radius:999px;background:var(--brand-soft);
  color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.03em;
}
.scene-body h2{margin-top:14px;font-size:clamp(21px,2.6vw,28px);line-height:1.4;font-weight:700;}
.scene-body p{margin-top:14px;color:var(--ink-soft);line-height:1.85;}
.check-list{margin-top:18px;display:grid;gap:10px;}
.check-list li{
  position:relative;padding-left:24px;font-size:15.5px;line-height:1.8;color:var(--ink);
}
.check-list li::before{
  content:'';position:absolute;left:2px;top:.62em;width:8px;height:8px;border-radius:2px;
  background:var(--brand-soft);border:1.5px solid var(--brand);
}
.link-arrow{display:inline-flex;align-items:center;gap:6px;margin-top:20px;color:var(--brand);font-weight:600;font-size:15px;}
.link-arrow span{transition:transform .18s ease;}
.link-arrow:hover{text-decoration:underline;}
.link-arrow:hover span{transform:translateX(3px);}

/* ---------- 对照清单 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr;gap:20px;margin-top:32px;}
@media (min-width:768px){.compare-grid{grid-template-columns:1fr 1fr;gap:28px;}}
.compare-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 24px;
  box-shadow:var(--shadow-1);transition:all .18s ease;
}
.compare-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.compare-card h3{font-size:18.5px;font-weight:600;display:flex;align-items:center;gap:10px;}
.compare-card h3 .dot{width:10px;height:10px;border-radius:50%;background:var(--brand);flex:none;}
.compare-card h3 .dot.accent{background:var(--accent);}
.compare-card ul{margin-top:16px;display:grid;gap:0;}
.compare-card li{
  padding:12px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink-soft);
  display:flex;gap:10px;
}
.compare-card li:last-child{border-bottom:none;}
.compare-card li strong{color:var(--ink);font-weight:600;flex:none;min-width:86px;}

/* ---------- FAQ ---------- */
.faq-list{margin-top:32px;display:grid;gap:12px;max-width:880px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  transition:box-shadow .18s ease;
}
.faq-item:hover{box-shadow:var(--shadow-1);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:17px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .icon{
  position:relative;width:20px;height:20px;flex:none;
}
.faq-item summary .icon::before,.faq-item summary .icon::after{
  content:'';position:absolute;background:var(--brand);border-radius:2px;transition:transform .22s ease;
}
.faq-item summary .icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-item summary .icon::after{left:9px;top:0;width:2px;height:20px;}
.faq-item[open] summary .icon::after{transform:rotate(90deg) scaleY(0);}
.faq-item[open] summary{color:var(--brand);}
.faq-body{padding:0 22px 20px;color:var(--ink-soft);font-size:15.5px;line-height:1.85;background:var(--brand-soft);}
.faq-body p{padding-top:16px;}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:var(--deep);color:#fff;border-top:1px solid rgba(255,255,255,.08);
}
.cta-inner{
  display:flex;flex-direction:column;gap:22px;padding:48px 20px;
}
@media (min-width:900px){
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;padding:56px 32px;}
}
.cta-inner h2{font-size:clamp(21px,2.6vw,30px);line-height:1.4;font-weight:700;}
.cta-inner p{margin-top:12px;color:#A9C7C1;font-size:15.5px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:60;
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 22px;border-radius:999px;background:var(--accent);color:#fff;
  font-size:15px;font-weight:600;box-shadow:0 10px 24px rgba(224,106,69,.32);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .28s ease, transform .28s ease, background .18s ease;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{background:#C75733;transform:translateY(-1px);box-shadow:0 14px 30px rgba(224,106,69,.4);}
@media (max-width:640px){
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;height:56px;justify-content:center;
    font-size:15.5px;transform:translateY(100%);
  }
  .float-cta.show{transform:translateY(0);}
  .float-cta:hover{transform:translateY(0);}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:#C8DAD6;padding-top:56px;font-size:14.5px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:960px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;}
.footer-brand .brand-mark{background:var(--brand);color:#fff;}
.footer-brand .kw{color:#8FD6C7;}
.footer-desc{margin-top:16px;line-height:1.85;color:#9FBDB6;max-width:360px;}
.footer-title{color:#fff;font-weight:600;font-size:15px;margin-bottom:16px;}
.footer-links{display:grid;gap:12px;}
.footer-links a{color:#C8DAD6;}
.footer-links a:hover{color:#8FD6C7;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  margin-top:44px;padding:22px 20px;border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:#8FA9A4;
}
@media (min-width:768px){.footer-bottom{padding:22px 32px;}}
.fb-right{display:flex;flex-wrap:wrap;gap:16px;}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--paper-2);
  transform:translateY(-100%);transition:transform .32s cubic-bezier(.4,0,.2,1);
  padding:20px;overflow-y:auto;
}
.drawer.open{transform:translateY(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:56px;}
.drawer-close{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;
  font-size:20px;color:var(--ink);cursor:pointer;line-height:1;
}
.drawer-menu{display:grid;gap:4px;margin-top:20px;}
.drawer-menu a{
  padding:14px 12px;border-bottom:1px solid var(--line);font-size:16.5px;color:var(--ink);
}
.drawer-menu a.active{color:var(--brand);font-weight:600;}
.drawer-menu a:hover{color:var(--brand);}
.drawer-cta{margin-top:24px;}
.drawer-cta .btn{width:100%;}

@media (max-width:900px){
  .nav-menu{display:none;}
  .nav-cta .btn{display:none;}
  .hamburger{display:inline-flex;}
}
@media (min-width:901px){
  .drawer{display:none;}
}
@media (max-width:520px){
  .hero-actions .btn{width:100%;}
  .hero-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .cta-actions{flex-direction:column;}
}

/* roulang page: category3 */
:root{
  --brand:#0E7C6B;
  --brand-dark:#0A5A4E;
  --brand-soft:#E6F2EF;
  --accent:#E06A45;
  --ink:#121B19;
  --ink-soft:#5C6B68;
  --paper:#F6F5F1;
  --paper-card:#FFFFFF;
  --line:#E3E2DB;
  --deep:#0E2B27;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(16,27,25,.06);
  --shadow-2:0 10px 28px rgba(16,27,25,.10);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",Inter,system-ui,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16.5px;
  line-height:1.85;
  font-feature-settings:"tnum";
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0;list-style:none}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}

/* 顶部信息条 */
.topbar{background:var(--deep);color:#E8F1EF;font-size:13px;height:36px;display:flex;align-items:center}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar .tb-domain{letter-spacing:.02em;color:#B9D2CD}
.topbar .tb-tip{color:#D6E5E2;display:none}
.topbar .tb-link{color:#fff;font-weight:600;border-bottom:1px solid rgba(255,255,255,.35);padding-bottom:1px;transition:.18s}
.topbar .tb-link:hover{color:#8FD6C7;border-color:#8FD6C7}
@media (min-width:768px){.topbar .tb-tip{display:inline}}

/* 导航 */
.navbar{
  position:sticky;top:0;z-index:50;
  background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.navbar.scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1)}
.nav-inner{height:66px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:15px;font-weight:700;flex:none;
}
.brand .kw{color:var(--brand)}
.nav-menu{display:none;align-items:center;gap:4px}
@media (min-width:1024px){.nav-menu{display:flex}}
.nav-item{
  position:relative;font-size:14.5px;color:var(--ink);padding:9px 12px;border-radius:8px;
  transition:color .18s ease,transform .18s ease;
}
.nav-item::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:center;transition:transform .18s ease;
}
.nav-item:hover{color:var(--brand);transform:translateY(1px)}
.nav-item:hover::after{transform:scaleX(1)}
.nav-item.active{color:var(--brand);font-weight:600}
.nav-item.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;
  color:var(--ink);cursor:pointer;transition:.18s;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
.nav-toggle:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
@media (min-width:1024px){.nav-toggle{display:none}}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:66px 0 0 0;background:#fff;z-index:49;
  transform:translateY(-8px);opacity:0;pointer-events:none;transition:.22s ease;
  padding:24px 20px 40px;overflow-y:auto;
}
.drawer.open{transform:none;opacity:1;pointer-events:auto}
.drawer .nav-item{display:block;font-size:16px;padding:14px 8px;border-bottom:1px solid var(--line);border-radius:0}
.drawer .nav-item::after{display:none}
.drawer .drawer-cta{margin-top:22px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;padding:12px 22px;border-radius:var(--radius-btn);
  border:1px solid transparent;cursor:pointer;transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease;
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 8px 20px rgba(14,124,107,.22)}
.btn-primary:active{transform:none}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand-soft)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#C9552F;transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px}

.text-link{color:var(--brand);font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:4px}
.text-link .arrow{transition:transform .18s ease}
.text-link:hover .arrow{transform:translateX(2px)}
.text-link:hover{text-decoration:underline}

.badge{
  display:inline-flex;align-items:center;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;
  padding:3px 12px;line-height:1.7;
}
.badge-warm{background:var(--accent);color:#fff}

/* 面包屑 */
.crumb{padding:18px 0 0}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-soft)}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:var(--line)}
.crumb a:hover{color:var(--brand)}
.crumb [aria-current]{color:var(--ink);font-weight:600}

/* 内页 Hero */
.page-hero{
  position:relative;color:#fff;margin-top:18px;
  border-radius:20px;overflow:hidden;
  background-image:linear-gradient(115deg,rgba(14,43,39,.94) 12%,rgba(14,43,39,.72) 62%,rgba(14,124,107,.62) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  padding:52px 28px;
}
@media (min-width:768px){.page-hero{padding:68px 56px}}
.page-hero h1{
  font-size:clamp(30px,5vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.01em;
  max-width:18em;
}
.page-hero .hero-sub{
  margin-top:18px;font-size:16.5px;line-height:1.85;color:#D8E7E4;max-width:44em;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-tags a{
  font-size:13.5px;color:#EAF4F2;border:1px solid rgba(255,255,255,.28);
  padding:6px 14px;border-radius:999px;transition:.18s;background:rgba(255,255,255,.06);
}
.hero-tags a:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.5)}

/* 分区通用 */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:92px 0}}
.section-tight{padding:40px 0}
@media (min-width:768px){.section-tight{padding:56px 0}}
.section-title{
  font-size:clamp(22px,3vw,32px);line-height:1.35;font-weight:700;letter-spacing:-.01em;
  padding-left:14px;border-left:3px solid var(--brand);
}
.section-lead{margin-top:14px;color:var(--ink-soft);font-size:16px;max-width:56em}

/* 文档双栏 */
.doc-layout{display:grid;grid-template-columns:1fr;gap:36px;align-items:start}
@media (min-width:1024px){.doc-layout{grid-template-columns:264px minmax(0,1fr);gap:56px}}

.toc{
  background:var(--paper-card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 20px;box-shadow:var(--shadow-1);
}
@media (min-width:1024px){.toc{position:sticky;top:92px}}
.toc-title{font-size:15px;font-weight:700;margin-bottom:12px;padding-left:10px;border-left:3px solid var(--brand)}
.toc-list{display:flex;flex-direction:column;gap:2px;counter-reset:toc}
.toc-list a{
  display:flex;gap:10px;font-size:14px;color:var(--ink-soft);
  padding:8px 10px;border-radius:8px;transition:.18s;line-height:1.6;
}
.toc-list a::before{
  counter-increment:toc;content:counter(toc,decimal-leading-zero);
  color:var(--brand);font-weight:700;font-size:12.5px;font-variant-numeric:tabular-nums;flex:none;
}
.toc-list a:hover{background:var(--brand-soft);color:var(--brand-dark)}
.toc-list a.active{background:var(--brand-soft);color:var(--brand-dark);font-weight:600}
.toc-note{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-soft);line-height:1.75;
}

.doc-body{
  background:var(--paper-card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 22px;box-shadow:var(--shadow-1);
}
@media (min-width:768px){.doc-body{padding:44px 48px}}
.doc-body h2{
  font-size:clamp(20px,2.4vw,24px);line-height:1.45;font-weight:700;
  margin:44px 0 16px;padding-left:12px;border-left:3px solid var(--brand);
  scroll-margin-top:92px;
}
.doc-body h2:first-of-type{margin-top:0}
.doc-body h3{font-size:17.5px;font-weight:600;margin:28px 0 12px;color:var(--ink)}
.doc-body p{font-size:17px;line-height:1.9;margin-bottom:1.15em;color:#202B29}
.doc-body p:last-child{margin-bottom:0}
.doc-body strong{color:var(--brand-dark)}

.doc-lead{
  background:var(--brand-soft);border-radius:14px;padding:20px 22px;margin-bottom:28px;
  font-size:15.5px;color:var(--brand-dark);line-height:1.85;
}

/* 步骤列表 */
.step-list{counter-reset:step;margin:18px 0 8px;display:flex;flex-direction:column;gap:12px}
.step-list li{
  position:relative;counter-increment:step;padding-left:40px;
  font-size:16px;line-height:1.8;color:#202B29;
}
.step-list li::before{
  content:counter(step);position:absolute;left:0;top:4px;
  width:24px;height:24px;border-radius:999px;background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:700;display:grid;place-items:center;
}

/* 提示信息对照列表 */
.issue-list{display:flex;flex-direction:column;border-top:1px solid var(--line);margin-top:18px}
.issue-list li{border-bottom:1px solid var(--line);padding:14px 0;display:flex;flex-direction:column;gap:4px}
.issue-list .issue-name{font-size:15.5px;font-weight:600;color:var(--brand-dark)}
.issue-list .issue-desc{font-size:15px;color:var(--ink-soft);line-height:1.8}

/* 图片 */
.doc-figure{margin:26px 0}
.doc-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;object-position:center;
  border-radius:var(--radius-img);border:1px solid var(--line);
}
.doc-figure figcaption{font-size:13px;color:var(--ink-soft);margin-top:10px;text-align:center}

/* 相关入口卡 */
.entry-grid{display:grid;grid-template-columns:1fr;gap:20px;margin-top:28px}
@media (min-width:640px){.entry-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.entry-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.entry-card{
  display:flex;flex-direction:column;gap:10px;
  background:var(--paper-card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px;box-shadow:var(--shadow-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFE3DE}
.entry-card h3{font-size:18px;font-weight:600}
.entry-card p{font-size:14.5px;color:var(--ink-soft);line-height:1.8}

/* CTA 带 */
.cta-band{
  background:var(--deep);color:#fff;border-radius:20px;
  padding:46px 26px;display:flex;flex-direction:column;gap:22px;
  align-items:flex-start;
  border-top:1px solid rgba(255,255,255,.08);
}
@media (min-width:768px){.cta-band{padding:56px 56px;flex-direction:row;align-items:center;justify-content:space-between}}
.cta-band h2{font-size:clamp(22px,3vw,30px);line-height:1.35;font-weight:700}
.cta-band p{margin-top:10px;font-size:15.5px;color:#C7DAD6;line-height:1.85;max-width:40em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:none}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:60;
  background:var(--accent);color:#fff;font-size:15px;font-weight:600;
  padding:13px 24px;border-radius:999px;
  box-shadow:0 10px 24px rgba(224,106,69,.32);
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity .25s ease,transform .25s ease,background-color .18s ease,box-shadow .18s ease;
}
.float-cta.show{opacity:1;transform:none;pointer-events:auto}
.float-cta:hover{background:#C9552F;transform:translateY(-1px);box-shadow:0 14px 30px rgba(224,106,69,.42)}
.float-cta:focus-visible{outline:2px solid #fff;outline-offset:2px}
@media (max-width:640px){
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;height:56px;
    display:flex;align-items:center;justify-content:center;padding:0;
    transform:translateY(100%);
  }
  .float-cta.show{transform:none}
  body{padding-bottom:0}
  .site-footer{padding-bottom:72px}
}

/* 页脚 */
.site-footer{background:var(--deep);color:#C7DAD6;margin-top:64px;padding:52px 0 26px;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700}
.footer-brand .brand-mark{background:var(--brand);color:#fff}
.footer-brand .kw{color:#7FD3C3}
.footer-desc{margin-top:16px;color:#A9C4BF;line-height:1.85;max-width:34em}
.footer-title{color:#fff;font-weight:600;font-size:15px;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:#A9C4BF;transition:.18s}
.footer-links a:hover{color:#7FD3C3}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-direction:column;gap:10px;font-size:13px;color:#8FA9A4;
}
@media (min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}
.fb-right{display:flex;gap:18px;flex-wrap:wrap}

/* roulang page: category4 */
:root{
    --brand:#0E7C6B;
    --brand-dark:#0A5A4E;
    --brand-soft:#E6F2EF;
    --accent:#E06A45;
    --ink:#121B19;
    --ink-soft:#5C6B68;
    --paper:#F6F5F1;
    --paper-2:#FFFFFF;
    --line:#E3E2DB;
    --deep:#0E2B27;
    --radius-card:16px;
    --radius-img:14px;
    --radius-btn:10px;
    --radius-input:10px;
    --shadow-1:0 1px 2px rgba(16,27,25,.06);
    --shadow-2:0 10px 28px rgba(16,27,25,.10);
    --shadow-nav:0 1px 0 #E3E2DB;
    --container:1200px;
  }

  *,*::before,*::after{box-sizing:border-box;}

  html{scroll-behavior:smooth;}

  body{
    margin:0;
    font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC','Inter',system-ui,sans-serif;
    font-size:16.5px;
    line-height:1.85;
    color:var(--ink);
    background:var(--paper);
    -webkit-font-smoothing:antialiased;
    -moz-osx-font-smoothing:grayscale;
  }

  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  button,input,textarea,select{font:inherit;color:inherit;}
  p{margin:0 0 1.15em;}
  ul,ol{margin:0;padding:0;}
  h1,h2,h3,h4{margin:0;font-weight:700;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding-left:20px;padding-right:20px;}
  @media (min-width:768px){.container{padding-left:32px;padding-right:32px;}}

  .section{padding:52px 0;scroll-margin-top:88px;}
  @media (min-width:768px){.section{padding:88px 0;}}
  .section-tight{padding:36px 0;scroll-margin-top:88px;}
  @media (min-width:768px){.section-tight{padding:56px 0;}}
  .section-alt{background:var(--brand-soft);}
  .section-deep{background:var(--deep);color:#E7F2EF;}
  .section-deep .section-sub{color:#A9C6C0;}

  .section-head{max-width:780px;margin-bottom:30px;}
  .section-title{
    font-size:clamp(22px,3vw,32px);
    line-height:1.35;
    letter-spacing:-.005em;
    position:relative;
    padding-left:16px;
    margin-bottom:12px;
  }
  .section-title::before{
    content:"";
    position:absolute;
    left:0;top:.16em;bottom:.16em;
    width:3px;border-radius:2px;
    background:var(--brand);
  }
  .section-deep .section-title::before{background:#4FC3AE;}
  .section-sub{color:var(--ink-soft);font-size:15.5px;line-height:1.88;margin:0;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--radius-btn);
    padding:11px 22px;
    font-size:15px;font-weight:600;line-height:1.2;
    border:1px solid transparent;
    cursor:pointer;
    transition:background-color .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
    white-space:nowrap;
  }
  .btn-primary{background:var(--brand);color:#fff;}
  .btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 10px 24px rgba(14,124,107,.28);}
  .btn-primary:active{transform:translateY(0);box-shadow:none;}
  .btn-ghost{background:#fff;color:var(--brand);border-color:var(--line);}
  .btn-ghost:hover{background:var(--brand-soft);border-color:#C9E4DD;}
  .btn-accent{background:var(--accent);color:#fff;}
  .btn-accent:hover{background:#CE5A37;transform:translateY(-1px);box-shadow:0 10px 24px rgba(224,106,69,.3);}
  .btn-sm{padding:9px 16px;font-size:14px;}
  .btn-lg{padding:13px 26px;font-size:16px;}

  .link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px;}
  .link-arrow span.ar{transition:transform .18s ease;}
  .link-arrow:hover span.ar{transform:translateX(2px);}
  .link-arrow:hover{text-decoration:underline;text-underline-offset:4px;}

  .badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:4px 12px;font-size:12px;font-weight:600;background:var(--brand-soft);color:var(--brand);line-height:1.6;}
  .badge-accent{background:var(--accent);color:#fff;}
  .badge-outline{background:transparent;border:1px solid rgba(255,255,255,.4);color:#DCEFEA;}

  .card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-1);
    transition:box-shadow .18s ease,transform .18s ease;
  }
  .card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}

  /* ---------- 顶部信息条 ---------- */
  .topbar{background:var(--deep);color:#fff;font-size:13px;line-height:1;}
  .topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
  .topbar-domain{color:#9FC0B9;letter-spacing:.02em;font-variant-numeric:tabular-nums;}
  .topbar-note{color:#D8E9E5;display:none;}
  @media (min-width:768px){.topbar-note{display:block;}}
  .topbar-link{color:#7FD7C6;font-weight:600;transition:color .18s ease;}
  .topbar-link:hover{color:#fff;}

  /* ---------- 主导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:#fff;
    box-shadow:var(--shadow-nav);
  }
  .site-header.scrolled{box-shadow:0 1px 0 #E3E2DB,0 6px 18px rgba(16,27,25,.06);}
  .header-inner{height:66px;display:flex;align-items:center;justify-content:space-between;gap:18px;}

  .brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:-.01em;}
  .brand-mark{
    width:34px;height:34px;border-radius:10px;
    background:var(--brand);color:#fff;
    display:grid;place-items:center;
    font-size:15px;font-weight:700;flex:0 0 auto;
  }
  .brand-text{white-space:nowrap;}
  .brand .kw{color:var(--brand);}

  .nav-menu{display:none;align-items:center;}
  @media (min-width:1024px){.nav-menu{display:flex;}}
  .nav-item{
    position:relative;
    padding:8px 2px;
    margin:0 12px;
    font-size:15px;
    color:var(--ink);
    transition:color .18s ease;
  }
  .nav-item::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
    background:transparent;transition:background-color .18s ease;
  }
  .nav-item:hover{color:var(--brand);}
  .nav-item:hover::after{background:rgba(14,124,107,.3);}
  .nav-item.active{color:var(--brand);font-weight:600;}
  .nav-item.active::after{background:var(--brand);}

  .header-actions{display:flex;align-items:center;gap:12px;}
  .header-actions .btn-primary{display:none;}
  @media (min-width:640px){.header-actions .btn-primary{display:inline-flex;}}

  .nav-toggle{
    width:42px;height:42px;border-radius:10px;
    border:1px solid var(--line);background:#fff;
    display:grid;place-items:center;gap:5px;
    cursor:pointer;
  }
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.2s;}
  @media (min-width:1024px){.nav-toggle{display:none;}}

  /* ---------- 移动端抽屉 ---------- */
  .drawer{
    position:fixed;inset:0;z-index:90;
    background:#fff;
    transform:translateX(100%);
    transition:transform .28s ease;
    display:flex;flex-direction:column;
    padding:20px;
    overflow-y:auto;
  }
  .drawer.open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
  .drawer-close{width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:20px;line-height:1;color:var(--ink-soft);}
  .drawer-nav{display:flex;flex-direction:column;}
  .drawer-nav a{
    padding:15px 4px;border-bottom:1px solid var(--line);
    font-size:16px;font-weight:600;color:var(--ink);
  }
  .drawer-nav a.active{color:var(--brand);}
  .drawer-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px;}
  @media (min-width:1024px){.drawer{display:none;}}

  /* ---------- 内页 Hero ---------- */
  .page-hero{
    position:relative;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;
    background-position:center;
    color:#fff;
    overflow:hidden;
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background:linear-gradient(115deg,rgba(14,43,39,.94) 0%,rgba(14,43,39,.82) 55%,rgba(10,90,78,.78) 100%);
  }
  .page-hero .container{position:relative;z-index:1;padding-top:30px;padding-bottom:78px;}
  .breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;font-size:13.5px;color:rgba(226,242,238,.7);margin:0 0 22px;}
  .breadcrumb li::after{content:"/";margin-left:8px;color:rgba(226,242,238,.4);}
  .breadcrumb li:last-child::after{content:"";margin:0;}
  .breadcrumb a{color:rgba(226,242,238,.9);}
  .breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
  .page-hero h1{
    font-size:clamp(30px,5vw,46px);
    line-height:1.25;
    letter-spacing:-.01em;
    margin-bottom:16px;
  }
  .hero-lead{max-width:660px;font-size:17px;line-height:1.88;color:#CDE4DF;margin-bottom:26px;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
  .hero-points{display:flex;flex-wrap:wrap;gap:10px 24px;list-style:none;font-size:14px;color:#B9D6D1;}
  .hero-points li{display:flex;align-items:center;gap:8px;}
  .hero-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:#4FC3AE;}

  /* ---------- 版本信息条 ---------- */
  .version-bar{
    position:relative;z-index:2;
    margin-top:-52px;
  }
  .version-grid{display:grid;grid-template-columns:1fr;gap:14px;}
  @media (min-width:768px){.version-grid{grid-template-columns:repeat(3,1fr);gap:18px;}}
  .version-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-2);
    padding:20px 22px;
  }
  .version-label{font-size:13px;color:var(--ink-soft);margin-bottom:8px;letter-spacing:.02em;}
  .version-value{font-size:20px;font-weight:700;line-height:1.4;font-variant-numeric:tabular-nums;}
  .version-value small{display:block;font-size:13px;font-weight:400;color:var(--ink-soft);margin-top:6px;line-height:1.7;}

  /* ---------- 下载方式卡 ---------- */
  .dl-grid{display:grid;grid-template-columns:1fr;gap:20px;}
  @media (min-width:900px){.dl-grid{grid-template-columns:1fr 1fr;gap:26px;}}
  .dl-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .18s ease,transform .18s ease;}
  .dl-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
  .dl-thumb{position:relative;width:100%;aspect-ratio:16/10;overflow:hidden;background:#DDE9E6;}
  .dl-thumb img{width:100%;height:100%;object-fit:cover;object-position:center 35%;}
  .dl-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
  .dl-body h3{font-size:19px;line-height:1.5;}
  .dl-body p{color:var(--ink-soft);font-size:15px;line-height:1.85;margin:0;}
  .dl-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px;}
  .dl-meta span{font-size:13px;color:var(--ink-soft);background:var(--paper);border:1px solid var(--line);border-radius:999px;padding:3px 11px;}

  /* ---------- 时间轴 ---------- */
  .timeline{position:relative;list-style:none;padding-left:38px;}
  .timeline::before{
    content:"";position:absolute;left:12px;top:8px;bottom:8px;width:2px;
    background:linear-gradient(180deg,var(--brand),rgba(14,124,107,.12));
    border-radius:2px;
  }
  .timeline li{position:relative;padding-bottom:30px;}
  .timeline li:last-child{padding-bottom:0;}
  .tl-dot{
    position:absolute;left:-38px;top:0;
    width:26px;height:26px;border-radius:50%;
    background:#fff;border:2px solid var(--brand);color:var(--brand);
    display:grid;place-items:center;
    font-size:12px;font-weight:700;font-variant-numeric:tabular-nums;
  }
  .tl-title{font-size:19px;font-weight:600;line-height:1.5;margin-bottom:8px;}
  .tl-text{color:var(--ink-soft);font-size:15.5px;line-height:1.85;margin:0 0 10px;}
  .tl-list{list-style:none;display:flex;flex-direction:column;gap:6px;}
  .tl-list li{display:flex;gap:10px;font-size:15px;color:var(--ink);padding-bottom:0;}
  .tl-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:10px;flex:0 0 auto;}

  /* ---------- 信息列表 ---------- */
  .info-list{border-top:1px solid var(--line);}
  .info-row{
    display:flex;gap:18px;align-items:flex-start;
    padding:16px 2px;
    border-bottom:1px solid var(--line);
    font-size:15.5px;
  }
  .info-label{flex:0 0 96px;color:var(--ink-soft);font-size:15px;}
  @media (min-width:640px){.info-label{flex:0 0 120px;}}
  .info-value{flex:1;line-height:1.8;}
  .info-value .mono{font-variant-numeric:tabular-nums;}

  /* ---------- 表单 ---------- */
  .form-wrap{
    display:grid;grid-template-columns:1fr;gap:0;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-1);overflow:hidden;
  }
  @media (min-width:900px){.form-wrap{grid-template-columns:.85fr 1.15fr;}}
  .form-aside{
    background:var(--brand-soft);
    padding:30px 26px;
    display:flex;flex-direction:column;gap:14px;
  }
  .form-aside h3{font-size:19px;line-height:1.5;}
  .form-aside p{font-size:15px;color:#3D524E;line-height:1.85;margin:0;}
  .form-aside ul{list-style:none;display:flex;flex-direction:column;gap:10px;margin-top:6px;}
  .form-aside li{display:flex;gap:10px;font-size:15px;color:#334703;color:#33433F;}
  .form-aside li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:10px;flex:0 0 auto;}
  .form-body{padding:28px 24px;}
  @media (min-width:900px){.form-body{padding:34px 32px;}}
  .form-field{margin-bottom:20px;}
  .form-label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
  .input,.textarea{
    width:100%;
    border:1px solid var(--line);
    border-radius:var(--radius-input);
    background:#fff;
    font-size:15px;
    color:var(--ink);
    transition:border-color .18s ease,box-shadow .18s ease;
  }
  .input{height:44px;padding:0 14px;}
  .textarea{min-height:124px;padding:12px 14px;line-height:1.75;resize:vertical;}
  .input::placeholder,.textarea::placeholder{color:#9AA8A5;}
  .input:focus,.textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,124,107,.15);}
  .form-error{display:none;color:var(--accent);font-size:13px;margin-top:6px;}
  .form-field.has-error .input,
  .form-field.has-error .textarea{border-color:var(--accent);}
  .form-field.has-error .form-error{display:block;}
  .form-hint{font-size:13px;color:var(--ink-soft);margin:0;}
  .form-ok{
    display:none;margin-top:16px;padding:12px 16px;border-radius:10px;
    background:var(--brand-soft);color:var(--brand-dark);font-size:14.5px;font-weight:600;
  }
  .form-ok.show{display:block;}

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:12px;}
  .faq-item{
    background:#fff;
    border:1px solid var(--line);
    border-radius:14px;
    overflow:hidden;
    transition:box-shadow .18s ease,border-color .18s ease;
  }
  .faq-item[open]{box-shadow:var(--shadow-1);border-color:#CFE5DF;}
  .faq-q{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:17px 20px;
    font-size:17px;font-weight:600;line-height:1.6;
    cursor:pointer;list-style:none;
  }
  .faq-q::-webkit-details-marker{display:none;}
  .faq-icon{
    flex:0 0 auto;width:24px;height:24px;border-radius:50%;
    background:var(--brand-soft);color:var(--brand);
    display:grid;place-items:center;
    font-size:16px;line-height:1;font-weight:700;
    transition:transform .2s ease,background-color .2s ease,color .2s ease;
  }
  .faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff;}
  .faq-a{
    padding:0 20px 18px;
    font-size:15.5px;line-height:1.88;color:#3B4B47;
    background:var(--brand-soft);
    padding-top:16px;
  }
  .faq-a p:last-child{margin-bottom:0;}

  /* ---------- 底部 CTA ---------- */
  .cta-band{
    background:var(--deep);
    color:#fff;
    border-top:1px solid rgba(255,255,255,.08);
  }
  .cta-inner{
    display:flex;flex-direction:column;gap:20px;
    padding:56px 0;
  }
  @media (min-width:900px){
    .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;padding:68px 0;}
  }
  .cta-inner h2{font-size:clamp(22px,3vw,30px);line-height:1.4;margin-bottom:10px;}
  .cta-inner p{color:#B7D3CE;font-size:15.5px;line-height:1.85;margin:0;max-width:640px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--deep);color:#CBDDD8;border-top:1px solid rgba(255,255,255,.08);}
  .footer-top{padding:56px 0 34px;}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
  @media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr;}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;}}
  .footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#fff;margin-bottom:14px;}
  .footer-brand .kw{color:#7FD7C6;}
  .footer-desc{font-size:14px;line-height:1.9;color:#9FB8B2;max-width:400px;margin:0;}
  .footer-title{font-size:14px;font-weight:600;color:#fff;margin:0 0 14px;letter-spacing:.02em;}
  .footer-links{display:flex;flex-direction:column;}
  .footer-links a{display:block;padding:6px 0;font-size:14.5px;color:#A9C2BC;transition:color .18s ease;}
  .footer-links a:hover{color:#fff;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.1);
    padding:18px 0;
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
    font-size:13px;color:#8FA9A3;
  }
  .footer-bottom .fb-right{display:flex;flex-wrap:wrap;gap:16px;}

  /* ---------- 浮动 CTA ---------- */
  .float-cta{
    position:fixed;right:24px;bottom:24px;z-index:70;
    border-radius:999px;
    padding:13px 22px;
    background:var(--accent);color:#fff;
    font-size:15px;font-weight:600;
    box-shadow:0 12px 28px rgba(224,106,69,.32);
    opacity:0;visibility:hidden;transform:translateY(10px);
    transition:opacity .24s ease,transform .24s ease,visibility .24s ease,box-shadow .18s ease;
  }
  .float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
  .float-cta:hover{transform:translateY(-1px);box-shadow:0 16px 34px rgba(224,106,69,.42);}
  @media (max-width:767px){
    .float-cta{
      left:0;right:0;bottom:0;
      border-radius:0;
      height:56px;
      display:flex;align-items:center;justify-content:center;
      padding:0;
      transform:none;
      box-shadow:0 -6px 20px rgba(16,27,25,.18);
    }
    .float-cta.show{transform:none;}
    .float-cta:hover{transform:none;}
    body{padding-bottom:56px;}
  }

  .divider{height:1px;background:var(--line);border:0;margin:0;}
  .text-soft{color:var(--ink-soft);}
  .mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}