/* roulang page: index */
:root{
  --brand-deep:#0C241F;
  --brand:#16453B;
  --brand-light:#1F6F5C;
  --lime:#C4E86B;
  --orange:#E2703A;
  --bg:#F5F3EC;
  --card:#FFFFFF;
  --soft:#EEF0E7;
  --line:#E2DED2;
  --text:#1A2321;
  --muted:#5B6A66;
  --white:#FFFFFF;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh1:0 1px 2px rgba(12,36,31,.06);
  --sh2:0 18px 34px -24px rgba(12,36,31,.35);
  --nav-w:240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,dl,dd{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:var(--brand-light);text-decoration:none;transition:color .16s ease;}
a:hover{color:var(--brand);}
img{display:block;max-width:100%;border-radius:var(--r-img);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font:inherit;color:inherit;box-shadow:none;border-radius:var(--r-btn);}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.num,.metric-value{font-variant-numeric:tabular-nums;}

/* ===== 布局骨架 ===== */
.main{margin-left:var(--nav-w);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:40px 0;}
.grid-gap{margin-left:-12px;margin-right:-12px;row-gap:24px;}
.grid-gap>.cell{padding-left:12px;padding-right:12px;}

/* ===== 左侧导航 ===== */
.side-nav{
  position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;z-index:60;
  display:flex;flex-direction:column;
  background:var(--brand-deep);color:#fff;
  padding:0 16px 20px;
  box-shadow:1px 0 0 rgba(255,255,255,.06);
}
.nav-top{display:flex;align-items:center;justify-content:space-between;height:88px;flex:0 0 auto;}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:34px;height:34px;flex:0 0 auto;border-radius:9px;
  background:var(--brand);display:flex;align-items:center;justify-content:center;
}
.brand-text{color:#fff;font-size:17px;font-weight:700;letter-spacing:.01em;line-height:1.2;}
.brand:hover .brand-text{color:var(--lime);}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;align-items:center;gap:4px;
  width:42px;height:42px;padding:0;border-radius:9px;
  border:1px solid rgba(255,255,255,.25);background:transparent;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .2s ease,opacity .2s ease;}
.nav-list{display:flex;flex-direction:column;gap:4px;margin-top:8px;}
.nav-item{
  position:relative;display:flex;align-items:center;
  height:44px;padding:0 16px 0 20px;border-radius:8px;
  color:#DCE5E2;font-size:15px;font-weight:500;
  transition:background .16s ease,color .16s ease;
}
.nav-item:hover{background:rgba(255,255,255,.07);color:#fff;}
.nav-item.is-active{background:rgba(196,232,107,.14);color:#fff;font-weight:600;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:2px;background:var(--lime);
}
.nav-login{
  display:flex;align-items:center;justify-content:center;
  height:44px;margin-top:20px;border-radius:var(--r-btn);
  border:1.5px solid var(--lime);color:var(--lime);font-size:15px;font-weight:600;
  transition:background .16s ease,color .16s ease;
}
.nav-login:hover{background:rgba(196,232,107,.14);color:var(--lime);}
.nav-foot{
  margin-top:auto;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  color:#B9C7C1;font-size:13px;line-height:1.9;
}
.nav-foot p{margin:0;}

/* ===== 通用组件 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:transform .16s ease,background .16s ease,color .16s ease,border-color .16s ease,box-shadow .16s ease;
}
.btn-primary{background:var(--orange);color:#fff;}
.btn-primary:hover{background:#cf5f2c;color:#fff;transform:translateY(-1px);}
.btn-secondary{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-secondary:hover{background:rgba(22,69,59,.08);color:var(--brand);}
.btn-block{width:100%;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-light);transition:gap .16s ease,color .16s ease;}
.link-more:hover{gap:10px;color:var(--brand);}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:rgba(196,232,107,.2);color:#20402F;font-size:12px;font-weight:600;letter-spacing:.02em;
}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--brand-light);margin-bottom:8px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:28px;}
.section-head h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:700;color:var(--brand-deep);}
.section-desc{font-size:14px;line-height:1.8;color:var(--muted);max-width:520px;}
.card{
  height:100%;display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh1);
  transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease;
}
.card:hover{transform:translateY(-2px);border-color:var(--brand-light);box-shadow:var(--sh2);}
.card-soft{background:var(--soft);border-color:transparent;}
.card-soft:hover{border-color:var(--brand-light);}
.card h3{font-size:20px;line-height:1.4;font-weight:700;color:var(--brand-deep);margin-bottom:8px;}
.card p{font-size:14px;line-height:1.8;color:var(--muted);}
.card .link-more{margin-top:auto;padding-top:16px;}
.card-cover{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);margin-bottom:18px;}
.icon-box{
  width:32px;height:32px;border-radius:12px;margin-bottom:16px;
  display:flex;align-items:center;justify-content:center;
  background:var(--soft);color:var(--brand);
}
.card-soft .icon-box{background:rgba(255,255,255,.75);}

/* ===== 首屏 ===== */
.hero{padding:48px 0 56px;}
.hero-title{
  font-size:clamp(30px,3.6vw,44px);line-height:1.25;font-weight:700;
  letter-spacing:-.01em;color:var(--brand-deep);margin:16px 0 18px;
}
.hero-sub{font-size:17px;line-height:1.8;color:var(--muted);max-width:560px;}
.hero-actions{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap;}
.hero-tip{display:flex;gap:10px;margin-top:22px;font-size:13px;line-height:1.7;color:var(--muted);max-width:520px;}
.hero-tip::before{content:"";flex:0 0 4px;width:4px;border-radius:2px;background:var(--lime);}
.hero-visual{position:relative;padding-bottom:30px;}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh2);}
.hero-note{
  position:absolute;left:16px;right:16px;bottom:0;
  display:flex;flex-direction:column;gap:2px;
  padding:16px 44px 16px 16px;
  background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:var(--sh2);
}
.hero-note-label{font-size:12px;color:var(--muted);}
.hero-note strong{font-size:15px;font-weight:600;line-height:1.5;color:var(--brand-deep);}
.hero-note-arrow{position:absolute;right:16px;top:50%;transform:translateY(-50%);font-size:18px;color:var(--brand-light);}

/* ===== 指标看板 ===== */
.metrics{background:var(--brand-deep);border-radius:16px;padding:32px;color:#fff;box-shadow:var(--sh2);}
.metrics-head{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-bottom:20px;border-bottom:1px solid rgba(255,255,255,.12);
}
.metrics-head h2{font-size:clamp(20px,2vw,26px);font-weight:700;color:#fff;}
.metrics-time{font-size:13px;color:#B9C7C1;}
.metrics-grid{padding-top:12px;}
.metric{padding:18px 0;}
.metric-value{font-size:clamp(32px,3vw,42px);font-weight:700;line-height:1.1;color:#fff;letter-spacing:-.01em;}
.metric-value span{font-size:15px;font-weight:500;color:#B9C7C1;margin-left:4px;}
.metric-name{font-size:15px;color:#B9C7C1;margin-top:6px;}
.metric-badge{
  display:inline-flex;align-items:center;height:22px;padding:0 9px;margin-top:10px;
  border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(196,232,107,.16);color:var(--lime);border:1px solid rgba(196,232,107,.35);
}
@media (min-width:992px){
  .metrics-grid>.cell+.cell .metric{border-left:1px solid rgba(255,255,255,.12);padding-left:26px;}
}

/* ===== 登录入口区 ===== */
.login-intro h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:700;color:var(--brand-deep);margin-bottom:12px;}
.login-intro p{font-size:15px;line-height:1.85;color:var(--muted);}
.dot-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.dot-list li{position:relative;padding-left:18px;font-size:15px;line-height:1.75;color:var(--text);}
.dot-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--lime);}
.login-panel{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--sh2);}
.seg{display:inline-flex;gap:4px;padding:4px;background:var(--soft);border-radius:999px;}
.seg button{
  height:36px;padding:0 18px;border-radius:999px;
  font-size:14px;font-weight:600;color:var(--muted);
  transition:background .16s ease,color .16s ease;
}
.seg button.is-active{background:var(--brand);color:#fff;}
.field{margin-top:16px;}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--brand-deep);}
.field .req{color:var(--orange);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--text);
  transition:border-color .16s ease,box-shadow .16s ease;
}
.field select{
  appearance:none;-webkit-appearance:none;padding-right:38px;
  background:#fff url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235B6A66' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 14px center;
  background-size:12px 8px;
}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-light);box-shadow:0 0 0 3px rgba(31,111,92,.2);
}
.form-help{display:block;margin-top:8px;font-size:12px;color:var(--muted);}
.panel-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:16px;font-size:13px;color:var(--muted);}
.panel-submit{margin-top:18px;}

/* ===== 资讯列表 ===== */
.news-feature{
  display:flex;flex-direction:column;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease;
}
.news-feature:hover{transform:translateY(-2px);border-color:var(--brand-light);box-shadow:var(--sh2);}
.news-cover{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.news-body{padding:22px;display:flex;flex-direction:column;flex:1;}
.news-feature-title{
  font-size:20px;line-height:1.45;font-weight:700;color:var(--brand-deep);margin:12px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-excerpt{
  font-size:14px;line-height:1.8;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  margin-top:auto;padding-top:16px;font-size:13px;color:var(--muted);
}
.news-list{height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;}
.news-item+.news-item{border-top:1px solid var(--line);}
.news-item a{display:block;padding:16px 20px;transition:background .16s ease;}
.news-item a:hover{background:var(--bg);}
.news-title{
  font-size:16px;font-weight:600;line-height:1.5;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .16s ease;
}
.news-item a:hover .news-title{color:var(--brand-light);}
.news-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:6px;font-size:13px;color:var(--muted);}
.news-meta .sep{width:1px;height:10px;background:var(--line);display:inline-block;}
.empty-state{
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  padding:36px 20px;text-align:center;
  background:var(--soft);border-radius:var(--r-card);border:1px dashed var(--line);
}
.empty-state svg{color:var(--brand);opacity:.4;}
.empty-state p{font-size:15px;color:var(--muted);}

/* ===== 对比区 ===== */
.compare{
  display:grid;grid-template-columns:1fr 1fr;
  background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;
}
.compare-col{padding:28px;}
.compare-col+.compare-col{border-left:1px solid var(--line);}
.compare-col-muted{background:var(--soft);}
.compare-col-head{display:flex;align-items:center;gap:8px;margin-bottom:20px;font-size:15px;font-weight:700;}
.compare-col-muted .compare-col-head{color:var(--muted);}
.compare-col-active .compare-col-head{color:var(--brand-deep);}
.compare-col-head .pin{width:8px;height:8px;border-radius:50%;background:#B7BFB8;}
.compare-col-active .compare-col-head .pin{background:var(--lime);}
.compare-item+.compare-item{margin-top:20px;}
.compare-item h4{font-size:16px;font-weight:600;color:var(--brand-deep);margin-bottom:4px;}
.compare-col-muted .compare-item h4{color:var(--muted);}
.compare-item p{font-size:14px;line-height:1.7;color:var(--muted);}
.bar{height:6px;border-radius:3px;background:rgba(12,36,31,.08);margin-top:10px;overflow:hidden;}
.bar span{display:block;height:100%;border-radius:3px;background:#B7BFB8;transition:width .3s ease;}
.compare-col-active .bar span{background:var(--brand-light);}

/* ===== FAQ ===== */
.faq{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;}
.faq-item+.faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;
  font-size:16px;font-weight:600;color:var(--brand-deep);
  transition:background .16s ease;
}
.faq-q:hover{background:var(--bg);}
.faq-icon{
  flex:0 0 24px;width:24px;height:24px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1.5px solid var(--brand);color:var(--brand);font-size:15px;line-height:1;
  transition:transform .18s ease,background .18s ease,color .18s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .18s ease;}
.faq-item.is-open .faq-a{max-height:360px;}
.faq-a p{padding:0 22px 18px;font-size:15px;line-height:1.8;color:var(--muted);}

/* ===== 转化表单 ===== */
.cta-block{background:var(--soft);border-radius:16px;padding:32px;}
.cta-copy h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:700;color:var(--brand-deep);margin-bottom:12px;}
.cta-copy p{font-size:15px;line-height:1.85;color:var(--muted);max-width:460px;}
.trust-list{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.trust-item{display:flex;gap:10px;font-size:15px;line-height:1.7;color:var(--text);}
.trust-item svg{flex:0 0 20px;margin-top:4px;color:var(--brand-light);}
.cta-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px;box-shadow:var(--sh2);}
.cta-note{margin-top:12px;font-size:12px;line-height:1.7;color:var(--muted);}

/* ===== 页脚 ===== */
.site-foot{background:var(--brand-deep);color:#B9C7C1;margin-top:44px;padding-top:56px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.foot-brand .brand-mark{width:32px;height:32px;border-radius:9px;background:var(--brand);}
.foot-brand strong{color:#fff;font-size:16px;font-weight:700;}
.foot-text{font-size:14px;line-height:1.9;max-width:300px;}
.foot-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.foot-links li+li{margin-top:10px;}
.foot-links a{color:#B9C7C1;font-size:14px;transition:color .16s ease;}
.foot-links a:hover{color:var(--lime);}
.foot-contact li{font-size:14px;line-height:1.9;color:#B9C7C1;}
.foot-contact li+li{margin-top:8px;}
.foot-contact span{display:block;font-size:12px;color:#8FA39C;}
.foot-bottom{
  margin-top:40px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:#8FA39C;line-height:1.8;
}
.foot-bottom a{color:#8FA39C;}
.foot-bottom a:hover{color:var(--lime);}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  :root{--nav-w:208px;}
  .container{padding:0 24px;}
}
@media (max-width:991px){
  .side-nav{
    right:0;width:100%;height:56px;overflow:hidden;
    flex-direction:row;align-items:center;justify-content:space-between;
    padding:0 16px;transition:height .2s ease;
    border-bottom:1px solid rgba(255,255,255,.1);
  }
  .nav-top{height:56px;width:100%;flex:1 1 auto;}
  .brand-mark{width:30px;height:30px;border-radius:8px;}
  .brand-text{font-size:16px;}
  .nav-toggle{display:flex;}
  .nav-list,.nav-login,.nav-foot{display:none;}
  body.menu-open{overflow:hidden;}
  body.menu-open .side-nav{
    height:100vh;flex-direction:column;align-items:stretch;justify-content:flex-start;
    padding-bottom:28px;overflow-y:auto;
  }
  body.menu-open .nav-top{margin-bottom:8px;}
  body.menu-open .nav-list{display:flex;flex-direction:column;gap:2px;margin-top:8px;}
  body.menu-open .nav-item{height:52px;}
  body.menu-open .nav-login{display:flex;margin-top:16px;}
  body.menu-open .nav-foot{display:block;margin-top:24px;}
  .main{margin-left:0;padding-top:56px;}
  .hero{padding:32px 0 40px;}
  .compare{grid-template-columns:1fr;}
  .compare-col+.compare-col{border-left:0;border-top:1px solid var(--line);}
  .cta-block{padding:24px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:32px 0;}
  .grid-gap{row-gap:16px;}
  .metrics{padding:22px;}
  .card{padding:18px;}
  .login-panel{padding:20px;}
  .news-body{padding:18px;}
  .faq-q{font-size:15px;padding:16px 18px;}
  .faq-a p{padding:0 18px 16px;}
  .cta-card{padding:20px;}
  .compare-col{padding:20px;}
  .site-foot{padding-top:40px;}
  .foot-bottom{margin-top:28px;justify-content:center;text-align:center;}
}
@media (max-width:559px){
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .hero-title{font-size:26px;}
  .hero-visual{padding-bottom:0;}
  .hero-note{position:static;margin-top:12px;box-shadow:var(--sh1);}
  .panel-submit .btn{width:100%;}
  .metrics-head{flex-direction:column;align-items:flex-start;gap:6px;}
}

/* roulang page: article */
:root{
  --deep:#0C241F;
  --brand:#16453B;
  --brand-light:#1F6F5C;
  --lime:#C4E86B;
  --orange:#E2703A;
  --bg:#F5F3EC;
  --card:#FFFFFF;
  --soft:#EEF0E7;
  --line:#E2DED2;
  --ink:#1A2321;
  --muted:#5B6A66;
  --white:#FFFFFF;
  --muted-dark:#B9C7C1;
  --nav-w:240px;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(12,36,31,.06);
  --sh-2:0 18px 34px -24px rgba(12,36,31,.35);
  --ease:160ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
body.nav-locked{overflow:hidden}
img{max-width:100%;display:block;border-radius:var(--r-img);object-fit:cover}
a{color:var(--brand-light);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand)}
p{margin:0 0 1.1em}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em;line-height:1.3;font-weight:700}
h1{font-size:clamp(26px,3.2vw,36px);line-height:1.3}
h2{font-size:clamp(22px,2.4vw,30px)}
h3{font-size:20px}
h4{font-size:17px}
ul,ol{margin:0 0 1.1em;padding-left:22px}
button,input,select,textarea{font-family:inherit;font-size:16px}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
.grid-gap{margin-left:-12px;margin-right:-12px}
.grid-gap>.cell{padding-left:12px;padding-right:12px}

/* ============ 左侧竖导航 ============ */
.side-nav{
  position:fixed;top:0;left:0;
  width:var(--nav-w);height:100vh;
  background:var(--deep);
  display:flex;flex-direction:column;
  padding:0 16px 20px;
  z-index:80;
  border-right:1px solid rgba(255,255,255,.06);
}
.nav-top{display:flex;align-items:center;justify-content:space-between;min-height:88px;padding:0 4px}
.brand{display:flex;align-items:center;gap:10px;color:#fff}
.brand:hover{color:#fff}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:9px;
  background:var(--brand);display:inline-flex;align-items:center;justify-content:center;
  box-shadow:inset 0 0 0 1px rgba(196,232,107,.25);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:9px;border:1px solid rgba(255,255,255,.18);
  background:transparent;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--lime);border-radius:2px}
.nav-list{display:flex;flex-direction:column;gap:4px;margin-top:8px}
.nav-item{
  display:flex;align-items:center;min-height:44px;padding:0 20px;
  color:rgba(255,255,255,.82);font-size:15px;font-weight:500;
  border-radius:8px;position:relative;transition:background var(--ease),color var(--ease);
}
.nav-item:hover{background:rgba(196,232,107,.08);color:#fff}
.nav-item.is-active{background:rgba(196,232,107,.14);color:#fff;font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:6px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:2px;background:var(--lime);
}
.nav-login{
  margin-top:20px;display:flex;align-items:center;justify-content:center;
  height:44px;border-radius:var(--r-btn);border:1px solid var(--lime);
  color:var(--lime);font-size:14px;font-weight:600;letter-spacing:.02em;
  transition:background var(--ease),color var(--ease);
}
.nav-login:hover{background:var(--lime);color:var(--deep)}
.nav-foot{margin-top:auto;padding:18px 4px 0;border-top:1px solid rgba(255,255,255,.12)}
.nav-foot p{margin:0 0 6px;font-size:13px;line-height:1.7;color:var(--muted-dark)}

/* ============ 内容区 ============ */
.main-area{margin-left:var(--nav-w);display:flex;flex-direction:column;min-height:100vh}
.site-main{flex:1 0 auto;padding:36px 0 72px}

/* 面包屑 */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:24px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand-light)}
.crumb-sep{color:#B7B5A9}
.crumb-current{color:var(--brand);max-width:60%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* 文章头 */
.article-head{padding-bottom:28px;border-bottom:1px solid var(--line);margin-bottom:36px}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  background:rgba(196,232,107,.18);color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.article-head h1{margin:16px 0 18px;max-width:900px}
.article-meta{display:flex;flex-wrap:wrap;gap:8px 14px;font-size:13px;color:var(--muted)}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta i{color:var(--brand-light);font-size:12px}

/* 文章 + 侧栏 */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:48px;align-items:start}
.article-main{min-width:0}
.article-body{font-size:16px;line-height:1.9;max-width:820px}
.article-body p{margin:0 0 1.15em}
.article-body h2{
  font-size:clamp(22px,2.2vw,28px);margin:40px 0 16px;padding-left:16px;
  border-left:4px solid var(--lime);
}
.article-body h3{font-size:20px;margin:28px 0 12px}
.article-body h4{font-size:17px;margin:22px 0 10px}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 1.15em}
.article-body li{margin-bottom:.45em}
.article-body li::marker{color:var(--brand);font-weight:700}
.article-body blockquote{
  margin:0 0 1.4em;padding:20px;border-left:4px solid var(--brand);
  background:var(--soft);border-radius:0 12px 12px 0;font-size:15px;color:var(--muted);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:0 0 12px;width:100%;height:auto}
.article-body figure{margin:0 0 1.4em}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body a{color:var(--brand-light);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand)}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 1.4em;border-radius:12px;overflow:hidden;background:var(--soft)}
.article-body th{background:var(--brand);color:#fff;font-size:14px;text-align:left;padding:12px 16px}
.article-body td{padding:12px 16px;font-size:15px;border-bottom:1px solid var(--line)}
.article-body tr:last-child td{border-bottom:none}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0}

/* 空态 */
.empty-state{
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;background:var(--soft);border-radius:var(--r-card);padding:40px 24px;text-align:center;
}
.empty-state i{font-size:34px;color:rgba(22,69,59,.4)}
.empty-state p{margin:0;color:var(--muted);font-size:15px}

/* 侧栏 */
.article-side{position:sticky;top:24px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1)}
.side-card.is-brand{background:var(--soft);border-color:#DCE3CE}
.side-card h3{font-size:17px;margin-bottom:10px}
.side-card p{font-size:14px;line-height:1.75;color:var(--muted);margin:0 0 16px}
.side-actions{display:flex;flex-direction:column;gap:10px}
.side-link-list{list-style:none;margin:0;padding:0}
.side-link-list li{border-bottom:1px solid var(--line)}
.side-link-list li:last-child{border-bottom:none}
.side-link-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 0 12px 12px;border-left:2px solid var(--lime);
  font-size:14px;color:var(--ink);font-weight:500;transition:color var(--ease),padding-left var(--ease);
}
.side-link-list a:hover{color:var(--brand-light);padding-left:16px}
.side-link-list i{color:var(--brand-light);font-size:12px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:#cf6231;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-outline:hover{background:rgba(31,111,92,.08);color:var(--brand)}
.btn-block{width:100%}
.btn-sm{height:40px;font-size:14px;padding:0 18px}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand-light)}
.text-link i{transition:transform var(--ease)}
.text-link:hover i{transform:translateX(3px)}

/* 相关推荐 */
.related{margin-top:64px;padding-top:40px;border-top:1px solid var(--line)}
.related-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:24px}
.related-head h2{font-size:clamp(20px,2vw,24px)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.rel-card:hover{transform:translateY(-2px);border-color:var(--brand-light);box-shadow:var(--sh-2)}
.rel-card img{width:100%;aspect-ratio:16/9;border-radius:0}
.rel-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:16px;line-height:1.5}
.rel-body p{margin:0;font-size:13px;color:var(--muted);line-height:1.7}
.rel-meta{margin-top:auto;font-size:12px;color:var(--muted);display:flex;gap:10px}

/* 文末导航 */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px}
.post-nav a{
  display:flex;flex-direction:column;gap:6px;padding:20px 22px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.post-nav a:hover{border-color:var(--brand-light);transform:translateY(-2px);box-shadow:var(--sh-2)}
.post-nav .pn-label{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:6px}
.post-nav .pn-title{font-size:15px;font-weight:600;color:var(--ink)}
.post-nav .pn-next{align-items:flex-end;text-align:right}
.back-row{margin-top:20px}

/* CTA 条 */
.cta-band{margin-top:64px;background:var(--deep);border-radius:16px;padding:36px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.cta-band h2{color:#fff;font-size:clamp(20px,2.2vw,26px)}
.cta-band p{margin:8px 0 0;color:var(--muted-dark);font-size:14px}
.cta-band .btn-primary{flex:0 0 auto}

/* ============ 页脚 ============ */
.site-foot{background:var(--deep);color:#fff;padding:56px 0 24px;margin-top:0}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.foot-brand strong{font-size:16px;color:#fff;letter-spacing:.01em}
.foot-text{font-size:13px;line-height:1.8;color:var(--muted-dark);margin:0;max-width:280px}
.foot-title{font-size:14px;color:#fff;margin:0 0 14px;font-weight:600;letter-spacing:.03em}
.foot-links,.foot-contact{list-style:none;margin:0;padding:0}
.foot-links li{margin-bottom:10px}
.foot-links a{font-size:14px;color:var(--muted-dark)}
.foot-links a:hover{color:var(--lime)}
.foot-contact li{font-size:13px;color:var(--muted-dark);line-height:1.9;display:flex;gap:10px}
.foot-contact span{color:rgba(255,255,255,.45);flex:0 0 62px}
.foot-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.foot-bottom p{margin:0;font-size:12px;color:var(--muted-dark);line-height:1.7}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--nav-w:208px}
  .container{padding:0 24px}
  .article-layout{grid-template-columns:minmax(0,1fr) 250px;gap:36px}
  .side-nav{padding:0 14px 18px}
  .nav-item{padding:0 16px;font-size:14px}
}
@media (max-width:991px){
  .side-nav{
    position:fixed;top:0;left:0;right:0;width:100%;height:56px;
    padding:0 16px;overflow:hidden;transition:height 220ms ease;
    border-bottom:1px solid rgba(255,255,255,.1);border-right:none;
  }
  .side-nav.is-open{height:100vh;overflow-y:auto;padding-bottom:24px}
  .nav-top{min-height:56px}
  .nav-toggle{display:flex}
  .side-nav.is-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .side-nav.is-open .nav-toggle span:nth-child(2){opacity:0}
  .side-nav.is-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
  .nav-toggle span{transition:transform 180ms ease,opacity 180ms ease}
  .nav-list,.nav-login,.nav-foot{display:none}
  .side-nav.is-open .nav-list{display:flex;margin-top:16px}
  .side-nav.is-open .nav-login{display:flex;margin-top:20px}
  .side-nav.is-open .nav-foot{display:block;margin-top:24px}
  .side-nav.is-open .nav-item{min-height:52px;font-size:15px}
  .main-area{margin-left:0;padding-top:56px}
  .site-main{padding:28px 0 56px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .article-side{position:static;order:2;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 260px}
  .article-body{max-width:100%}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .article-side{flex-direction:column}
  .side-card{width:100%}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .post-nav{grid-template-columns:minmax(0,1fr)}
  .post-nav .pn-next{align-items:flex-start;text-align:left}
  .article-meta{font-size:12px}
  .crumb-current{max-width:100%}
  .site-foot{padding:44px 0 20px}
  .foot-bottom{justify-content:center;text-align:center}
}
@media (max-width:560px){
  .btn{width:100%}
  .cta-band .btn-primary{width:100%}
  .article-body table{display:block;background:transparent}
  .article-body thead{display:none}
  .article-body tbody{display:block}
  .article-body tr{display:block;background:var(--soft);border-radius:12px;padding:10px 4px;margin-bottom:12px}
  .article-body td{display:block;border-bottom:1px solid var(--line);padding:8px 14px;font-size:14px}
  .article-body tr td:last-child{border-bottom:none}
  .article-head h1{margin:14px 0 14px}
  .related-head{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --c-deep:#0C241F;
  --c-brand:#16453B;
  --c-brand-light:#1F6F5C;
  --c-lime:#C4E86B;
  --c-orange:#E2703A;
  --c-orange-dark:#C95F2C;
  --c-bg:#F5F3EC;
  --c-card:#FFFFFF;
  --c-soft:#EEF0E7;
  --c-line:#E2DED2;
  --c-ink:#1A2321;
  --c-ink-2:#5B6A66;
  --c-on-dark-2:#B9C7C1;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(12,36,31,.06);
  --sh-2:0 18px 34px -24px rgba(12,36,31,.35);
  --nav-w:240px;
  --gutter:12px;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{
  margin:0 0 .6em;
  font-family:inherit;
  color:var(--c-ink);
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.01em;
}
h1{font-size:clamp(30px,3.6vw,44px);line-height:1.25;}
h2{font-size:clamp(22px,2.4vw,30px);}
h3{font-size:20px;line-height:1.4;}
h4{font-size:17px;}
p{margin:0 0 1.1em;font-size:16px;line-height:1.85;}
p:last-child{margin-bottom:0;}
a{color:var(--c-brand);text-decoration:none;transition:color .16s ease;}
a:hover{color:var(--c-brand-light);}
ul,ol{margin:0 0 1.1em;padding:0;list-style:none;}
li{font-size:16px;line-height:1.8;}
img{max-width:100%;display:block;border-radius:var(--r-img);}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--c-lime);outline-offset:2px;border-radius:6px;}

/* ============ 容器与栅格 ============ */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
.grid-x{margin-left:calc(var(--gutter) * -1);margin-right:calc(var(--gutter) * -1);}
.grid-x > .cell{padding-left:var(--gutter);padding-right:var(--gutter);}

/* ============ 通用组件 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:999px;
  background:rgba(196,232,107,.18);
  color:var(--c-brand);
  font-size:12px;
  font-weight:600;
  line-height:1.6;
  letter-spacing:.01em;
}
.badge-plain{
  background:var(--c-soft);
  color:var(--c-ink-2);
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1.5px solid transparent;
  transition:background .16s ease,transform .16s ease,color .16s ease,border-color .16s ease,box-shadow .16s ease;
}
.btn-primary{background:var(--c-orange);color:#fff;box-shadow:0 10px 22px -16px rgba(226,112,58,.9);}
.btn-primary:hover{background:var(--c-orange-dark);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--c-brand);color:var(--c-brand);}
.btn-ghost:hover{background:rgba(31,111,92,.08);color:var(--c-brand);}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--c-brand-light);
}
.link-arrow .arw{transition:transform .16s ease;display:inline-block;}
.link-arrow:hover .arw{transform:translateX(3px);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--c-brand-light);
  letter-spacing:.06em;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:18px;height:3px;border-radius:2px;background:var(--c-lime);
}
.band{padding:64px 0;}
.band-tight{padding:40px 0;}

/* ============ 左侧竖向导航 ============ */
.side-nav{
  position:fixed;
  top:0;left:0;
  width:var(--nav-w);
  height:100vh;
  background:var(--c-deep);
  display:flex;
  flex-direction:column;
  padding:0 16px 22px;
  z-index:100;
  border-right:1px solid rgba(255,255,255,.08);
}
.nav-top{
  height:88px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex:0 0 auto;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
}
.brand:hover{color:#fff;}
.brand-mark{
  width:32px;height:32px;
  border-radius:9px;
  background:rgba(196,232,107,.14);
  display:grid;
  place-items:center;
  flex:0 0 auto;
}
.brand-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.nav-list{
  display:flex;
  flex-direction:column;
  gap:4px;
  padding:6px 0 0;
  margin:0;
}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  height:44px;
  padding:0 12px 0 20px;
  border-radius:8px;
  color:rgba(255,255,255,.76);
  font-size:15px;
  font-weight:500;
  transition:background .16s ease,color .16s ease;
}
.nav-item:hover{background:rgba(255,255,255,.07);color:#fff;}
.nav-item.is-active{
  background:rgba(196,232,107,.14);
  color:#fff;
  font-weight:600;
}
.nav-item.is-active::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:20px;
  border-radius:0 3px 3px 0;
  background:var(--c-lime);
}
.nav-login{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:44px;
  margin:20px 0 0;
  border:1.5px solid var(--c-lime);
  border-radius:8px;
  color:var(--c-lime);
  font-size:14px;
  font-weight:600;
  transition:background .16s ease,color .16s ease;
}
.nav-login:hover{background:rgba(196,232,107,.16);color:var(--c-lime);}
.nav-foot{
  margin-top:auto;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.1);
}
.nav-foot p{
  margin:0 0 6px;
  font-size:13px;
  line-height:1.7;
  color:var(--c-on-dark-2);
}
.nav-toggle{
  display:none;
  background:transparent;
  border:1px solid rgba(255,255,255,.22);
  border-radius:9px;
  width:40px;height:40px;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
  padding:0;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:#fff;
  transition:transform .2s ease,opacity .2s ease;
}

/* ============ 页面主体 ============ */
.page-wrap{
  margin-left:var(--nav-w);
  padding-bottom:0;
}

/* 面包屑 */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-ink-2);
  padding-top:32px;
}
.crumb a{color:var(--c-ink-2);}
.crumb a:hover{color:var(--c-brand-light);}
.crumb .sep{opacity:.5;}
.crumb .current{color:var(--c-brand);font-weight:600;}

/* Hero */
.page-hero{
  position:relative;
  padding:8px 0 40px;
  overflow:hidden;
  background:
    radial-gradient(760px 320px at 88% -10%, rgba(196,232,107,.28), transparent 68%),
    radial-gradient(560px 300px at 6% 110%, rgba(31,111,92,.10), transparent 70%);
}
.page-hero h1{margin-bottom:18px;}
.page-hero .lede{
  font-size:18px;
  line-height:1.8;
  color:var(--c-ink-2);
  max-width:34em;
  margin-bottom:22px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;}
.hero-figure img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-card);
  box-shadow:var(--sh-2);
  background:var(--c-soft);
}

/* 锚点子导航 */
.anchor-bar{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(245,243,236,.92);
  backdrop-filter:blur(8px);
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
  margin-bottom:8px;
}
.anchor-inner{
  display:flex;
  gap:8px;
  overflow-x:auto;
  padding:12px 0;
  scrollbar-width:none;
}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border:1px solid var(--c-line);
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  color:var(--c-ink-2);
  background:#fff;
  white-space:nowrap;
  transition:all .16s ease;
}
.anchor-inner a:hover{border-color:var(--c-brand-light);color:var(--c-brand);}
.anchor-inner a.is-on{background:var(--c-brand);border-color:var(--c-brand);color:#fff;}

/* 图文交替区块 */
.alt-block{
  padding:52px 0;
  border-bottom:1px solid var(--c-line);
}
.alt-block:last-of-type{border-bottom:0;}
.alt-block h2{margin-bottom:16px;}
.alt-block h2::after{
  content:"";
  display:block;
  width:44px;height:4px;
  border-radius:2px;
  background:var(--c-lime);
  margin-top:14px;
}
.alt-block p{color:var(--c-ink-2);max-width:36em;}
.alt-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-card);
  box-shadow:var(--sh-2);
  background:var(--c-soft);
}
.alt-figure .fig-cap{
  margin:12px 0 0;
  font-size:13px;
  color:var(--c-ink-2);
  text-align:center;
}
.point-list{margin:18px 0 22px;}
.point-list li{
  position:relative;
  padding-left:18px;
  margin-bottom:8px;
  color:var(--c-ink);
  font-size:15.5px;
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--c-lime);
}

/* 指标条 */
.metric-strip{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  background:var(--c-soft);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:8px 0;
  margin:8px 0;
}
.metric{
  padding:22px 26px;
  border-left:1px solid rgba(12,36,31,.1);
}
.metric:first-child{border-left:0;}
.metric-num{
  display:block;
  font-size:28px;
  font-weight:700;
  color:var(--c-brand);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.metric-label{
  display:block;
  margin-top:6px;
  font-size:13px;
  line-height:1.7;
  color:var(--c-ink-2);
}

/* 更新提示 */
.notice-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:28px 32px;
}
.notice-list{margin:6px 0 0;}
.notice-list li{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:14px 0;
  border-bottom:1px solid var(--c-line);
  font-size:15px;
  color:var(--c-ink);
}
.notice-list li:last-child{border-bottom:0;padding-bottom:0;}
.notice-list .tag{
  flex:0 0 auto;
  font-size:12px;
  font-weight:600;
  color:var(--c-brand);
  background:rgba(196,232,107,.2);
  border-radius:999px;
  padding:2px 10px;
  line-height:1.7;
  margin-top:2px;
}

/* FAQ */
.faq{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.faq-item + .faq-item{border-top:1px solid var(--c-line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  background:none;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  line-height:1.6;
  transition:background .16s ease;
}
.faq-q:hover{background:rgba(238,240,231,.55);}
.faq-icon{
  flex:0 0 auto;
  width:28px;height:28px;
  border-radius:999px;
  border:1.5px solid var(--c-brand-light);
  color:var(--c-brand-light);
  display:grid;
  place-items:center;
  font-size:16px;
  line-height:1;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-item.is-open .faq-icon{background:var(--c-brand-light);color:#fff;transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  padding:0 24px;
  transition:max-height .2s ease;
}
.faq-a-inner{
  padding-bottom:20px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-ink-2);
}
.faq-a-inner p{font-size:15px;color:var(--c-ink-2);margin:0;}

/* CTA 深色条 */
.cta-band{
  background:var(--c-deep);
  border-radius:16px;
  padding:36px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  color:#fff;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-60px;top:-80px;
  width:280px;height:280px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(196,232,107,.20),transparent 70%);
  pointer-events:none;
}
.cta-band h2{color:#fff;margin-bottom:8px;font-size:clamp(20px,2.2vw,26px);}
.cta-band p{color:var(--c-on-dark-2);font-size:15px;margin:0;max-width:34em;}
.cta-band .btn{flex:0 0 auto;position:relative;z-index:1;}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.4);color:#fff;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;}

/* 页脚 */
.site-foot{
  margin-left:var(--nav-w);
  background:var(--c-deep);
  color:#fff;
  padding:64px 0 0;
  margin-top:64px;
}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.foot-brand strong{font-size:17px;font-weight:700;color:#fff;}
.foot-text{font-size:14px;line-height:1.8;color:var(--c-on-dark-2);margin:0;}
.foot-title{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin:4px 0 14px;
}
.foot-links,.foot-contact{margin:0;}
.foot-links li{margin-bottom:9px;}
.foot-links a{
  font-size:14px;
  color:var(--c-on-dark-2);
  transition:color .16s ease;
}
.foot-links a:hover{color:var(--c-lime);}
.foot-contact li{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  font-size:14px;
  line-height:1.9;
  color:var(--c-on-dark-2);
  margin-bottom:6px;
}
.foot-contact li span{color:rgba(255,255,255,.55);}
.foot-bottom{
  margin-top:44px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.foot-bottom p{margin:0;font-size:12px;color:var(--c-on-dark-2);}

/* 锚点定位偏移 */
#prepare,#verify,#trouble,#team,#faq,#news,#contact{scroll-margin-top:86px;}

/* ============ 断点 ============ */
@media (min-width:1024px){
  .alt-block.is-flip .alt-figure{order:-1;}
}
@media (max-width:1199.98px){
  :root{--nav-w:208px;}
  .container{padding:0 24px;}
  .band{padding:56px 0;}
}
@media (max-width:991.98px){
  :root{--gutter:10px;}
  .side-nav{
    width:100%;
    height:56px;
    padding:0 16px;
    overflow:hidden;
    border-right:0;
    border-bottom:1px solid rgba(255,255,255,.1);
    transition:height .22s ease;
  }
  .nav-top{height:56px;width:100%;}
  .brand-text{font-size:16px;}
  .nav-toggle{display:inline-flex;}
  .side-nav .nav-list,
  .side-nav .nav-login,
  .side-nav .nav-foot{display:none;}
  .side-nav.is-open{
    height:100vh;
    overflow-y:auto;
    display:flex;
    flex-direction:column;
  }
  .side-nav.is-open .nav-top{flex:0 0 56px;}
  .side-nav.is-open .nav-list{display:flex;flex-direction:column;gap:6px;padding:12px 0 4px;}
  .side-nav.is-open .nav-item{height:52px;font-size:16px;}
  .side-nav.is-open .nav-login{display:inline-flex;margin:16px 0 4px;height:48px;}
  .side-nav.is-open .nav-foot{display:block;margin-top:auto;padding:20px 0 24px;}
  .side-nav.is-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg);}
  .side-nav.is-open .nav-toggle span:nth-child(2){opacity:0;}
  .side-nav.is-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
  .page-wrap{margin-left:0;padding-top:56px;}
  .site-foot{margin-left:0;}
  .anchor-bar{top:56px;}
  .page-hero{padding-top:8px;}
  .hero-figure{margin-top:28px;}
  #prepare,#verify,#trouble,#team,#faq,#news,#contact{scroll-margin-top:120px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 26px;}
  .cta-band .btn{width:100%;}
  .metric-strip{grid-template-columns:1fr;}
  .metric{border-left:0;border-top:1px solid rgba(12,36,31,.1);padding:18px 20px;}
  .metric:first-child{border-top:0;}
  .alt-block{padding:40px 0;}
  .alt-figure{margin-top:24px;}
}
@media (max-width:767.98px){
  .container{padding:0 18px;}
  .band{padding:44px 0;}
  .page-hero .lede{font-size:16.5px;}
  .page-hero h1{margin-bottom:14px;}
  .notice-card{padding:22px 20px;}
  .faq-q{padding:18px 18px;font-size:15.5px;}
  .faq-a{padding:0 18px;}
  .site-foot{padding-top:48px;margin-top:48px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:559.98px){
  .btn{width:100%;}
  .hero-tags .badge{font-size:12px;}
  .alt-block p{font-size:15.5px;}
  .point-list li{font-size:15px;}
  .metric-num{font-size:25px;}
  .cta-band{padding:26px 20px;}
  .crumb{font-size:12.5px;}
  .anchor-inner a{height:32px;padding:0 14px;}
}

/* roulang page: category2 */
:root{
  --brand-deep:#0C241F;
  --primary:#16453B;
  --primary-mid:#1F6F5C;
  --lime:#C4E86B;
  --accent:#E2703A;
  --bg:#F5F3EC;
  --card:#FFFFFF;
  --section:#EEF0E7;
  --border:#E2DED2;
  --text:#1A2321;
  --text-2:#5B6A66;
  --on-dark-2:#B9C7C1;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(12,36,31,.06);
  --shadow-lg:0 18px 34px -24px rgba(12,36,31,.35);
  --nav-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,p,ul,ol,figure,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .16s ease}
img{max-width:100%;display:block}
button{font-family:inherit;font-size:inherit;border:0;background:none;color:inherit;cursor:pointer}
h1,h2,h3,h4{line-height:1.3;font-weight:700;letter-spacing:-.01em;color:var(--primary)}
input,select,textarea{font-family:inherit;font-size:15px}
::selection{background:rgba(196,232,107,.5);color:var(--brand-deep)}

/* ---------- 布局 ---------- */
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}
.content-area{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
.page-main{flex:1 0 auto;padding-bottom:8px}
.block{margin-top:72px}
.grid-gap{margin-left:-12px;margin-right:-12px}
.grid-gap>.cell{padding-left:12px;padding-right:12px}
.card-row{margin-bottom:-24px}
.card-row>.cell{margin-bottom:24px}

/* ---------- 左侧导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;
  width:var(--nav-w);height:100vh;
  background:var(--brand-deep);
  display:flex;flex-direction:column;
  padding:0 16px 24px;
  overflow-y:auto;z-index:60;
}
.nav-top{height:88px;flex:0 0 88px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:rgba(196,232,107,.12);
  border:1px solid rgba(196,232,107,.25);
  display:flex;align-items:center;justify-content:center;
}
.brand-text{font-size:16px;font-weight:700;color:#fff;letter-spacing:.01em;line-height:1.2}
.nav-toggle{display:none;width:40px;height:40px;flex-direction:column;justify-content:center;align-items:center;gap:5px;border-radius:8px}
.nav-toggle span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.nav-list{display:flex;flex-direction:column;gap:4px;padding-top:6px}
.nav-item{
  position:relative;display:flex;align-items:center;
  height:44px;padding:0 12px 0 20px;border-radius:8px;
  font-size:15px;color:#D5DFDA;transition:background .16s ease,color .16s ease;
}
.nav-item:hover{background:rgba(255,255,255,.07);color:#fff}
.nav-item:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.nav-item.is-active{background:rgba(196,232,107,.14);color:#fff;font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;
  width:3px;border-radius:3px;background:var(--lime);
}
.nav-login{
  margin-top:22px;display:block;text-align:center;
  padding:11px 12px;border-radius:var(--radius-btn);
  border:1.5px solid var(--lime);color:var(--lime);
  font-size:14px;font-weight:600;transition:background .16s ease,color .16s ease;
}
.nav-login:hover{background:rgba(196,232,107,.14);color:#fff}
.nav-login:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.nav-foot{margin-top:auto;padding-top:28px;font-size:13px;line-height:1.95;color:var(--on-dark-2)}
.nav-foot p{margin:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .16s ease,background .16s ease,border-color .16s ease,color .16s ease,box-shadow .16s ease;
}
.btn:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:#c85f2d;color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border:1.5px solid var(--primary);color:var(--primary)}
.btn-ghost:hover{background:rgba(22,69,59,.07);color:var(--primary);transform:translateY(-1px)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary)}
.arrow-link .ar{transition:transform .16s ease}
.arrow-link:hover{color:var(--primary-mid)}
.arrow-link:hover .ar{transform:translateX(3px)}

/* ---------- 面包屑与首屏 ---------- */
.crumbs{padding-top:44px;font-size:13px;color:var(--text-2);display:flex;flex-wrap:wrap;align-items:center;gap:2px}
.crumbs a:hover{color:var(--primary-mid)}
.crumbs .sep{margin:0 8px;opacity:.55}
.crumbs .cur{color:var(--primary);font-weight:600}
.page-hero{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;flex-wrap:wrap;margin-top:22px}
.page-hero-main{max-width:660px}
.h1-kicker{
  display:block;font-size:12px;font-weight:600;letter-spacing:.16em;
  color:var(--primary-mid);margin-bottom:12px;line-height:1.4;
}
.page-hero h1{font-size:clamp(30px,3.6vw,44px);line-height:1.25;font-weight:700;letter-spacing:-.01em;color:var(--primary)}
.hero-lead{margin-top:16px;font-size:17px;line-height:1.85;color:var(--text-2);max-width:620px}
.page-hero-side{display:flex;align-items:center;gap:14px;padding-bottom:6px}
.hero-meta{font-size:13px;color:var(--text-2);line-height:1.6;max-width:150px}

/* ---------- 筛选标签 ---------- */
.filter-row{
  display:flex;gap:10px;margin-top:36px;padding-bottom:6px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.filter-row::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;padding:8px 18px;border-radius:999px;
  border:1px solid var(--border);background:#fff;color:var(--text-2);
  font-size:14px;line-height:1.6;transition:background .16s ease,color .16s ease,border-color .16s ease;
}
.chip:hover{border-color:var(--primary-mid);color:var(--primary)}
.chip:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.chip.is-on{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}

/* ---------- 板块标题 ---------- */
.sec-head{display:flex;justify-content:space-between;align-items:baseline;gap:20px;flex-wrap:wrap;margin-bottom:26px}
.sec-head h2{font-size:clamp(22px,2.4vw,30px);color:var(--primary);line-height:1.35}
.sec-sub{font-size:14px;color:var(--text-2);line-height:1.7}

/* ---------- 服务卡片网格 ---------- */
.venue-card{
  height:100%;display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease;
}
.venue-card:hover{transform:translateY(-2px);border-color:var(--primary-mid);box-shadow:var(--shadow-lg)}
.venue-card:focus-within{outline:2px solid var(--lime);outline-offset:2px}
.thumb{position:relative;aspect-ratio:4/3;background:var(--section);overflow:hidden}
.thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s ease}
.venue-card:hover .thumb img{transform:scale(1.03)}
.badge{
  position:absolute;top:12px;left:12px;
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:999px;
  background:rgba(196,232,107,.94);color:var(--brand-deep);
  font-size:12px;font-weight:600;line-height:1.5;
}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:19px;line-height:1.45;color:var(--primary)}
.card-text{font-size:14px;line-height:1.78;color:var(--text-2)}
.card-meta{font-size:13px;color:var(--text-2);display:flex;flex-wrap:wrap;gap:6px 14px;margin-top:2px}
.card-body .arrow-link{margin-top:auto;padding-top:6px}

/* ---------- 参数对照 ---------- */
.spec-card{background:var(--section);border-radius:var(--radius-card);padding:30px 32px}
.spec-note{font-size:13px;color:var(--text-2);line-height:1.75;margin-bottom:20px;max-width:760px}
.spec-list{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.spec-row{display:flex;justify-content:space-between;align-items:baseline;gap:20px;padding:13px 0;border-bottom:1px solid var(--border)}
.spec-name{font-size:14px;color:var(--text-2);line-height:1.7}
.spec-val{font-size:15px;font-weight:600;color:var(--text);text-align:right;line-height:1.7}
.spec-list .spec-row:nth-last-child(-n+2){border-bottom:0}

/* ---------- 数据小结 ---------- */
.stat-card{
  height:100%;background:var(--card);border:1px solid var(--border);
  border-radius:12px;padding:22px 24px;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.stat-card:hover{transform:translateY(-2px);border-color:var(--primary-mid);box-shadow:var(--shadow-lg)}
.stat-num{
  font-size:28px;font-weight:700;color:var(--primary);
  font-variant-numeric:tabular-nums;line-height:1.3;
}
.stat-num small{font-size:14px;font-weight:600;color:var(--text-2);margin-left:4px}
.stat-desc{font-size:13px;color:var(--text-2);line-height:1.7;margin-top:6px}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:22px 20px}
.step .n{
  width:32px;height:32px;border-radius:8px;
  background:rgba(196,232,107,.3);color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:14px;
}
.step h3{font-size:16px;color:var(--primary);margin-bottom:8px}
.step p{font-size:14px;line-height:1.75;color:var(--text-2)}

/* ---------- 图文分区 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius-img);background:var(--section)}
.split-body h2{font-size:clamp(22px,2.4vw,30px);color:var(--primary);margin-bottom:14px}
.split-body p{font-size:15px;line-height:1.85;color:var(--text-2);margin-bottom:12px}
.dot-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.dot-list li{position:relative;padding-left:18px;font-size:15px;line-height:1.7;color:var(--text)}
.dot-list li::before{
  content:"";position:absolute;left:0;top:.62em;
  width:6px;height:6px;border-radius:50%;background:var(--lime);
  box-shadow:0 0 0 1px rgba(22,69,59,.15);
}

/* ---------- FAQ ---------- */
.faq-list{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 24px;font-size:16px;font-weight:600;color:var(--primary);
  transition:background .16s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#FAF9F4}
.faq-item summary:focus-visible{outline:2px solid var(--lime);outline-offset:-2px}
.faq-item .ic{
  position:relative;flex:0 0 24px;width:24px;height:24px;border-radius:50%;
  border:1.5px solid var(--primary);
  transition:transform .18s ease,background .18s ease;
}
.faq-item .ic::before,
.faq-item .ic::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);transition:background .18s ease;
}
.faq-item .ic::before{width:10px;height:1.5px}
.faq-item .ic::after{width:1.5px;height:10px}
.faq-item[open] .ic{background:var(--primary);transform:rotate(45deg)}
.faq-item[open] .ic::before,
.faq-item[open] .ic::after{background:#fff}
.faq-a{padding:0 24px 20px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-deep);border-radius:16px;
  padding:40px 44px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,28px);margin-bottom:10px}
.cta-band p{font-size:15px;line-height:1.8;color:var(--on-dark-2);max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.45);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--brand-deep);color:#fff;padding:64px 0 0;margin-top:80px;flex-shrink:0}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.foot-brand .brand-mark{width:28px;height:28px;flex:0 0 28px;border-radius:8px}
.foot-brand strong{font-size:16px;font-weight:700;color:#fff}
.foot-text{font-size:14px;line-height:1.85;color:var(--on-dark-2);max-width:300px}
.foot-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;line-height:1.4}
.foot-links li{margin-bottom:2px}
.foot-links a{font-size:14px;line-height:2.05;color:var(--on-dark-2)}
.foot-links a:hover{color:var(--lime)}
.foot-links a:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.foot-contact li{font-size:14px;line-height:1.95;color:var(--on-dark-2)}
.foot-contact span{color:#7E918B;display:block;font-size:13px;line-height:1.6}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  margin-top:48px;padding:20px 0 24px;
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  font-size:12px;line-height:1.7;color:var(--on-dark-2);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .side-nav{width:208px;padding:0 14px 22px}
  .content-area{margin-left:208px}
  .container{padding:0 24px}
  .spec-list{gap:0 32px}
}
@media (max-width:1100px){
  .split{grid-template-columns:1fr;gap:26px}
  .split-media img{aspect-ratio:16/9}
}
@media (max-width:991px){
  .side-nav{
    width:100%;height:56px;padding:0 16px;
    flex-direction:column;align-items:stretch;
    overflow:hidden;transition:height .22s ease;
  }
  body.nav-open .side-nav{height:100vh;height:100dvh;overflow-y:auto;padding-bottom:28px}
  .nav-top{height:56px;flex:0 0 56px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.1)}
  .nav-toggle{display:flex}
  body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  body.nav-open .nav-toggle span:nth-child(2){opacity:0}
  body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .nav-list,.nav-login,.nav-foot{display:none}
  body.nav-open .nav-list{display:flex;padding-top:14px}
  body.nav-open .nav-item{height:52px;padding-left:18px}
  body.nav-open .nav-login{display:block;margin-top:20px}
  body.nav-open .nav-foot{display:block;margin-top:26px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12)}
  body.nav-open{overflow:hidden}
  .content-area{margin-left:0;padding-top:56px}
  .container{padding:0 24px}
  .block{margin-top:56px}
  .steps{grid-template-columns:1fr 1fr}
  .spec-card{padding:24px}
  .spec-list{grid-template-columns:1fr}
  .spec-list .spec-row:nth-last-child(-n+2){border-bottom:1px solid var(--border)}
  .spec-list .spec-row:last-child{border-bottom:0}
  .cta-band{padding:32px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-a{padding:0 18px 18px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .block{margin-top:48px}
  .crumbs{padding-top:28px}
  .page-hero{margin-top:18px;gap:20px}
  .hero-lead{font-size:16px}
  .page-hero-side{width:100%;justify-content:flex-start}
  .hero-meta{max-width:none}
  .grid-gap{margin-left:-8px;margin-right:-8px}
  .grid-gap>.cell{padding-left:8px;padding-right:8px}
  .card-row{margin-bottom:-16px}
  .card-row>.cell{margin-bottom:16px}
  .steps{grid-template-columns:1fr}
  .spec-card{padding:20px 18px}
  .spec-row{flex-direction:column;align-items:flex-start;gap:2px}
  .spec-val{text-align:left}
  .cta-band{padding:26px 20px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .site-foot{padding-top:48px;margin-top:56px}
  .foot-text{max-width:none}
  .foot-bottom{flex-direction:column;align-items:flex-start;text-align:left;margin-top:36px}
  .foot-links a,.foot-contact li{font-size:13.5px}
}
@media (max-width:520px){
  .page-hero h1{font-size:clamp(26px,7.6vw,32px)}
  .card-body{padding:16px 16px 18px}
  .stat-card{padding:18px}
  .thumb{aspect-ratio:16/10}
  .btn{width:100%}
  .page-hero-side .btn{width:auto}
}