/* roulang page: index */
:root{
  --brand:#0F8A7C;
  --brand-deep:#07564E;
  --accent:#F2543D;
  --accent-soft:#FFEDE9;
  --canvas:#F4F7F6;
  --surface:#FFFFFF;
  --line:#E2EAE8;
  --ink:#10161A;
  --muted:#5B6B70;
  --dark:#0C1A1F;
  --dark-ink:#E8F1EF;
  --dark-muted:rgba(232,241,239,.68);
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --sh-card:0 1px 2px rgba(12,26,31,.05),0 8px 24px -12px rgba(12,26,31,.10);
  --sh-hover:0 16px 36px -18px rgba(12,26,31,.22);
}
*{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",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--canvas);
}
h1,h2,h3,h4{margin:0;line-height:1.3;}
p{margin:0;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
button,input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.hero :focus-visible,.site-footer :focus-visible{outline-color:#7FE0D4;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 28px;}}
@media (min-width:1024px){.container{padding:0 32px;}}

/* ---------- 顶部命令栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(150%) blur(12px);
  -webkit-backdrop-filter:saturate(150%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease,background .2s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 28px -22px rgba(12,26,31,.6);background:rgba(255,255,255,.95);}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#fff;font-size:17px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.06em;}
.main-nav{display:none;align-items:center;gap:4px;margin-left:8px;}
@media (min-width:1024px){.main-nav{display:flex;}}
.nav-link{
  position:relative;padding:8px 14px;border-radius:9px;
  font-size:15px;color:var(--muted);font-weight:500;
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--ink);background:#F2F6F5;}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;
  height:2px;border-radius:2px;background:var(--brand);
}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.cmd-search{
  display:none;align-items:center;gap:8px;
  height:40px;padding:0 12px;min-width:250px;
  background:#F7FAF9;border:1px solid var(--line);border-radius:var(--r-btn);
  transition:border-color .18s ease,background .18s ease,box-shadow .18s ease;
}
@media (min-width:1024px){.cmd-search{display:flex;}}
.cmd-search i{color:var(--muted);font-size:13px;}
.cmd-search input{
  flex:1;border:0;background:transparent;outline:none;font-size:14px;min-width:0;
}
.cmd-search input::placeholder{color:#9AA8AC;}
.cmd-search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(15,138,124,.12);}
.kbd{
  font-size:11px;color:var(--muted);border:1px solid var(--line);
  border-radius:6px;padding:2px 6px;background:#fff;white-space:nowrap;
}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;cursor:pointer;color:var(--ink);transition:border-color .18s ease,color .18s ease;
}
.menu-toggle:hover{border-color:var(--brand);color:var(--brand);}
@media (min-width:1024px){.menu-toggle{display:none;}}
.mobile-nav{
  display:none;border-top:1px solid var(--line);background:#fff;padding:12px 20px 18px;
}
.mobile-nav.open{display:block;}
@media (min-width:1024px){.mobile-nav.open{display:none;}}
.mobile-nav a{
  display:block;padding:12px 4px;font-size:15.5px;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.mobile-nav a.active{color:var(--brand);font-weight:600;}
.mobile-nav a:last-child{border-bottom:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -14px rgba(15,138,124,.85);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink);}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);}
.btn-ghost-dark{background:rgba(232,241,239,.06);border-color:rgba(232,241,239,.3);color:var(--dark-ink);}
.btn-ghost-dark:hover{border-color:#7FE0D4;color:#7FE0D4;background:rgba(232,241,239,.1);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background-color:var(--dark);
  background-image:linear-gradient(100deg,rgba(12,26,31,.94) 0%,rgba(12,26,31,.72) 46%,rgba(12,26,31,.45) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  color:var(--dark-ink);
}
.hero-inner{
  display:grid;grid-template-columns:1fr;gap:40px;
  padding:64px 0 72px;
}
@media (min-width:1024px){
  .hero-inner{grid-template-columns:7fr 5fr;gap:56px;padding:92px 0 100px;align-items:center;}
}
.hero h1{
  font-size:31px;font-weight:700;line-height:1.24;letter-spacing:-.01em;color:#fff;
}
@media (min-width:640px){.hero h1{font-size:38px;}}
@media (min-width:1024px){.hero h1{font-size:48px;}}
.hero-sub{
  margin-top:18px;font-size:17px;line-height:1.8;color:rgba(232,241,239,.82);max-width:600px;
}
@media (min-width:1024px){.hero-sub{font-size:19px;}}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:22px;}
.hero-points span{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;color:rgba(232,241,239,.86);
}
.hero-points i{font-size:8px;color:#7FE0D4;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}

.hero-card{
  background:var(--surface);color:var(--ink);
  border-radius:var(--r-card);padding:24px;
  box-shadow:0 24px 60px -30px rgba(0,0,0,.65);
}
.hero-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.hero-card-head h2{font-size:15px;font-weight:700;}
.hero-card-head span{font-size:12px;color:var(--muted);}
.mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;margin-top:18px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden;}
.mini-cell{background:#fff;padding:16px 14px;}
.mini-cell b{
  display:block;font-size:24px;font-weight:700;color:var(--brand);
  font-family:"DIN Alternate","Helvetica Neue",ui-monospace,monospace;letter-spacing:.01em;
}
.mini-cell small{display:block;margin-top:4px;font-size:12.5px;color:var(--muted);line-height:1.5;}
.bar-track{margin-top:20px;}
.bar-track .bar-label{display:flex;justify-content:space-between;font-size:12.5px;color:var(--muted);margin-bottom:8px;}
.bar{height:8px;border-radius:999px;background:#EDF2F1;overflow:hidden;}
.bar span{display:block;height:100%;width:86%;border-radius:999px;background:linear-gradient(90deg,var(--brand) 0%,#37B3A3 100%);}

/* ---------- 区块通用 ---------- */
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:88px 0;}}
.section-alt{background:#FFFFFF;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.eyebrow{
  font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--brand);
  display:inline-flex;align-items:center;gap:8px;margin-bottom:12px;
}
.eyebrow::before{content:"";width:3px;height:13px;border-radius:2px;background:var(--brand);}
.h2{font-size:26px;font-weight:700;letter-spacing:-.01em;}
@media (min-width:1024px){.h2{font-size:32px;}}
.section-desc{margin-top:12px;font-size:14.5px;color:var(--muted);max-width:660px;line-height:1.8;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;}
.link-more{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand);
}
.link-more:hover{color:var(--brand-deep);}
.link-more i{font-size:12px;transition:transform .18s ease;}
.link-more:hover i{transform:translateX(3px);}

/* ---------- 指标看板 ---------- */
.kpi-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:32px;}
@media (min-width:1024px){.kpi-grid{grid-template-columns:repeat(4,1fr);gap:24px;}}
.kpi{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 20px;box-shadow:var(--sh-card);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.kpi:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);border-color:#D6E3E0;}
.kpi i{font-size:15px;color:var(--brand);}
.kpi b{
  display:block;margin-top:14px;font-size:32px;font-weight:700;color:var(--accent);
  font-family:"DIN Alternate","Helvetica Neue",ui-monospace,monospace;line-height:1.1;
}
@media (min-width:1024px){.kpi b{font-size:38px;}}
.kpi b em{font-style:normal;font-size:15px;margin-left:4px;color:var(--muted);font-weight:600;}
.kpi small{display:block;margin-top:8px;font-size:13px;color:var(--muted);line-height:1.65;}

/* ---------- 内容卡片 ---------- */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);border-color:#D6E3E0;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;line-height:1;
  padding:6px 10px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent);
}
.badge-plain{background:#EAF4F2;color:var(--brand);}

.post-grid{display:grid;grid-template-columns:1fr;gap:20px;margin-top:32px;}
@media (min-width:640px){.post-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.post-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.post-card-link{display:block;height:100%;padding:24px;}
.post-title{
  margin-top:14px;font-size:19px;font-weight:600;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card:hover .post-title{color:var(--brand);}
.post-sum{
  margin-top:10px;font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.post-meta .more{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;}
.post-meta .more i{transition:transform .18s ease;}
.post-card:hover .post-meta .more i{transform:translateX(3px);}
.empty-state{
  margin-top:32px;min-height:230px;
  border:1px dashed #CFDEDB;border-radius:var(--r-card);background:#FBFDFC;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:32px;
}
.empty-state i{font-size:26px;color:#A9BCB8;}
.empty-state p{font-size:14px;color:var(--muted);}

/* ---------- 服务矩阵 ---------- */
.matrix{display:grid;grid-template-columns:1fr;gap:20px;margin-top:34px;align-items:start;}
@media (min-width:1024px){.matrix{grid-template-columns:repeat(4,1fr);gap:24px;}}
.matrix .span-2{grid-column:span 1;}
@media (min-width:1024px){.matrix .span-2{grid-column:span 2;}}
.matrix .wide{grid-column:span 1;}
@media (min-width:640px) and (max-width:1023px){.matrix .wide{grid-column:span 1;}}
@media (min-width:1024px){.matrix .wide{grid-column:span 2;}}
.svc{padding:26px;height:100%;display:flex;flex-direction:column;position:relative;overflow:hidden;}
.svc::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:0;
  background:var(--brand);border-radius:0 3px 3px 0;transition:width .22s ease;
}
.svc:hover::before{width:3px;}
.svc i.svc-icon{font-size:17px;color:var(--brand);}
.svc h3{margin-top:14px;font-size:20px;font-weight:600;}
.svc p{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.8;}
.svc .svc-link{
  margin-top:auto;padding-top:18px;display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.svc .svc-link i{font-size:11px;transition:transform .18s ease;}
.svc:hover .svc-link i{transform:translateX(3px);}
.svc-img{
  margin-top:20px;border-radius:var(--r-img);overflow:hidden;background:#EDF2F1;
}
.svc-img img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease;}
.svc:hover .svc-img img{transform:scale(1.03);}

/* ---------- 结果对比 ---------- */
.compare{display:grid;grid-template-columns:1fr;gap:20px;margin-top:34px;}
@media (min-width:1024px){.compare{grid-template-columns:1fr 1fr;gap:24px;}}
.compare-col{border-radius:var(--r-card);padding:26px;border:1px solid var(--line);background:#fff;}
.compare-col.is-before{background:#FAFCFB;}
.compare-col.is-after{border-color:var(--brand);background:#F4FAF8;}
.compare-col h3{font-size:18px;font-weight:600;display:flex;align-items:center;gap:10px;}
.compare-col h3 i{font-size:14px;}
.compare-col.is-before h3{color:var(--muted);}
.compare-col.is-after h3{color:var(--brand);}
.compare-list{list-style:none;margin:18px 0 0;padding:0;display:flex;flex-direction:column;gap:12px;}
.compare-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.7;}
.compare-col.is-before .compare-list li{color:var(--muted);}
.compare-col.is-after .compare-list li{color:var(--ink);}
.compare-list i{margin-top:6px;font-size:12px;}
.compare-col.is-before .compare-list i{color:#B9C4C2;}
.compare-col.is-after .compare-list i{color:var(--brand);}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr;gap:0 40px;margin-top:30px;}
@media (min-width:1024px){.faq-grid{grid-template-columns:1fr 1fr;}}
.faq-col{display:flex;flex-direction:column;}
details.faq{border-bottom:1px solid var(--line);}
details.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:18px 14px;font-size:16.5px;font-weight:600;line-height:1.55;
  cursor:pointer;list-style:none;border-left:2px solid transparent;
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
details.faq summary::-webkit-details-marker{display:none;}
details.faq summary:hover{background:#F7FAF9;}
details.faq[open] summary{border-left-color:var(--brand);color:var(--brand);background:#F7FAF9;}
details.faq summary .chev{font-size:12px;color:var(--muted);transition:transform .2s ease,color .2s ease;flex-shrink:0;}
details.faq[open] summary .chev{transform:rotate(180deg);color:var(--brand);}
details.faq .faq-body{padding:2px 14px 20px 16px;font-size:15px;line-height:1.85;color:var(--muted);}

/* ---------- 转化表单 ---------- */
.cta-panel{
  display:grid;grid-template-columns:1fr;gap:32px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-card);
}
@media (min-width:1024px){.cta-panel{grid-template-columns:5fr 7fr;gap:48px;padding:44px;}}
.cta-points{list-style:none;margin:22px 0 0;padding:0;display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;gap:10px;font-size:14.5px;color:var(--muted);line-height:1.7;}
.cta-points i{margin-top:5px;font-size:12px;color:var(--brand);}
.privacy-note{margin-top:20px;font-size:12.5px;color:var(--muted);line-height:1.7;}
.form-grid{display:grid;grid-template-columns:1fr;gap:18px;}
@media (min-width:640px){.form-grid.two{grid-template-columns:1fr 1fr;}}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.field .req{color:var(--accent);margin-left:2px;}
.input{
  width:100%;height:46px;padding:0 14px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-input);
  font-size:14.5px;outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
textarea.input{height:auto;min-height:124px;padding:12px 14px;line-height:1.75;resize:vertical;}
select.input{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 18px) 21px,calc(100% - 13px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:38px;}
.input::placeholder{color:#9AA8AC;}
.input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(15,138,124,.12);}
.form-foot{font-size:12px;color:var(--muted);line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--dark-ink);padding:60px 0 26px;margin-top:8px;}
.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:2fr 1fr 1fr 1.2fr;gap:40px;}}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.site-footer p{font-size:14px;color:var(--dark-muted);line-height:1.8;}
.site-footer a{color:var(--dark-muted);font-size:14px;}
.site-footer a:hover{color:#fff;text-decoration:underline;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{background:linear-gradient(135deg,#12A08F 0%,var(--brand-deep) 100%);}
.footer-brand strong{color:#fff;font-size:16px;}
.footer-brand em{font-style:normal;font-size:11.5px;color:var(--dark-muted);display:block;}
.footer-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px;}
.footer-social{display:flex;gap:12px;margin-top:18px;}
.footer-social a{
  width:36px;height:36px;border-radius:10px;border:1px solid rgba(232,241,239,.18);
  display:inline-flex;align-items:center;justify-content:center;color:var(--dark-muted);
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.footer-social a:hover{color:#fff;border-color:#7FE0D4;background:rgba(232,241,239,.06);text-decoration:none;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(232,241,239,.14);
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  font-size:12px;color:rgba(232,241,239,.55);
}
.footer-bottom a{font-size:12px;color:rgba(232,241,239,.55);}

/* roulang page: article */
:root{
  --brand:#0F8A7C;
  --brand-deep:#07564E;
  --accent:#F2543D;
  --accent-soft:#FFEDE9;
  --canvas:#F4F7F6;
  --surface:#FFFFFF;
  --line:#E2EAE8;
  --ink:#10161A;
  --muted:#5B6B70;
  --dark:#0C1A1F;
  --dark-text:#E8F1EF;
  --dark-muted:rgba(232,241,239,.68);
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;
  --shadow-card:0 1px 2px rgba(12,26,31,.05),0 8px 24px -12px rgba(12,26,31,.10);
  --shadow-hover:0 16px 36px -18px rgba(12,26,31,.22);
}
*,*::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",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--canvas);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--brand);}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:1.3em;}
: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 28px;}}
@media(min-width:1024px){.container{padding:0 32px;}}

/* ---------- 命令栏 ---------- */
.cmd-bar{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.95);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease-out;
}
.cmd-bar.is-stuck{box-shadow:0 10px 30px -22px rgba(12,26,31,.45);}
.cmd-inner{display:flex;align-items:center;gap:18px;min-height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#fff;display:grid;place-items:center;
  font-weight:700;font-size:17px;letter-spacing:.02em;
  box-shadow:0 6px 16px -10px rgba(15,138,124,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1.16;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.08em;}
.main-nav{display:none;align-items:center;gap:4px;margin-left:10px;}
@media(min-width:1024px){.main-nav{display:flex;}}
.nav-link{
  position:relative;padding:9px 12px;border-radius:8px;
  font-size:15px;color:var(--muted);white-space:nowrap;
  transition:color .18s ease-out,background .18s ease-out;
}
.nav-link:hover{color:var(--ink);background:#F1F6F5;}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.cmd-right{display:flex;align-items:center;gap:10px;margin-left:auto;}
.cmd-search{
  display:none;align-items:center;gap:8px;height:40px;padding:0 12px;
  border:1px solid var(--line);border-radius:var(--radius-input);
  background:#F8FBFA;min-width:240px;
  transition:border-color .18s ease-out,background .18s ease-out,box-shadow .18s ease-out;
}
@media(min-width:1024px){.cmd-search{display:flex;}}
.cmd-search:focus-within{border-color:var(--brand);background:var(--surface);box-shadow:0 0 0 3px rgba(15,138,124,.12);}
.cmd-search i{color:var(--muted);font-size:13px;}
.cmd-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;}
.cmd-search input::placeholder{color:#9AA8AC;}
.cmd-search kbd{
  font-family:"DIN Alternate","Helvetica Neue",ui-monospace,monospace;
  font-size:11px;color:var(--muted);border:1px solid var(--line);
  border-radius:6px;padding:1px 5px;background:#fff;white-space:nowrap;
}
.icon-btn{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:var(--surface);color:var(--muted);
  transition:all .18s ease-out;
}
@media(min-width:1024px){.icon-btn{display:inline-flex;}}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;
  transition:all .18s ease-out;
}
.menu-toggle:hover{border-color:var(--brand);color:var(--brand);}
@media(min-width:1024px){.menu-toggle{display:none;}}
.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--surface);padding:14px 20px 20px;}
.mobile-panel.open{display:block;}
@media(min-width:1024px){.mobile-panel{display:none !important;}}
.mobile-panel .mobile-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:14px;}
.mobile-nav-link{padding:11px 12px;border-radius:10px;font-size:15px;color:var(--muted);}
.mobile-nav-link:hover{background:#F1F6F5;color:var(--ink);}
.mobile-nav-link.active{color:var(--brand);font-weight:600;background:#F1F6F5;}
.mobile-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 12px;border:1px solid var(--line);border-radius:var(--radius-input);background:#F8FBFA;margin-bottom:12px;}
.mobile-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;}
.mobile-search i{color:var(--muted);font-size:13px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px -14px rgba(15,138,124,.9);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border-color:var(--line);background:var(--surface);color:var(--ink);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-sm{height:38px;font-size:14px;padding:0 16px;}
.cmd-cta{display:none;}
@media(min-width:640px){.cmd-cta{display:inline-flex;}}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  background:var(--dark) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:var(--dark-text);
  padding:34px 0 52px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(12,26,31,.94) 0%,rgba(12,26,31,.78) 46%,rgba(12,26,31,.54) 100%);
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--dark-muted);margin-bottom:24px;}
.breadcrumb a{color:var(--dark-muted);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:var(--dark-text);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-head h1{
  font-size:30px;line-height:1.28;font-weight:700;letter-spacing:-.01em;
  margin:16px 0 18px;color:#fff;max-width:920px;
}
@media(min-width:768px){.article-head h1{font-size:38px;}}
@media(min-width:1024px){.article-head h1{font-size:46px;}}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;padding:4px 12px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent);
}
.badge-dark{background:rgba(127,224,212,.16);color:#7FE0D4;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--dark-muted);}
.article-meta i{font-size:13px;opacity:.85;}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:currentColor;opacity:.5;}

/* ---------- 区块 ---------- */
.section{padding:48px 0;}
@media(min-width:1024px){.section{padding:80px 0;}}
.section-head{margin-bottom:28px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--brand);font-weight:600;margin-bottom:10px;
}
.section-head .eyebrow::before{content:"";width:3px;height:14px;background:var(--brand);border-radius:2px;}
.section-head h2{font-size:24px;line-height:1.32;font-weight:700;}
@media(min-width:1024px){.section-head h2{font-size:32px;}}
.section-head p{margin-top:10px;font-size:14px;color:var(--muted);max-width:62ch;}

/* ---------- 正文 ---------- */
.article-wrap{max-width:840px;margin:0 auto;}
.article-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:24px 20px;
}
@media(min-width:768px){.article-body{padding:44px 48px;}}
.article-body h2{
  position:relative;font-size:22px;line-height:1.36;font-weight:700;
  margin:40px 0 16px;padding-left:14px;
}
@media(min-width:768px){.article-body h2{font-size:25px;}}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:3px;
  background:var(--brand);border-radius:2px;
}
.article-body h2:first-child{margin-top:0;}
.article-body h3{font-size:19px;line-height:1.42;font-weight:600;margin:26px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;}
.article-body p{margin:0 0 1.1em;line-height:1.9;}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:1.4em;line-height:1.85;}
.article-body li{margin-bottom:.5em;}
.article-body ul li::marker{color:var(--brand);}
.article-body ol li::marker{color:var(--brand);font-weight:700;}
.article-body blockquote{
  margin:0 0 1.2em;padding:14px 18px;border-left:3px solid var(--brand);
  background:#F7FAF9;border-radius:0 10px 10px 0;color:var(--muted);
}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body img{border-radius:12px;margin:18px 0;}
.article-body figure{margin:0 0 1.3em;}
.article-body figcaption{font-size:12.5px;color:var(--muted);margin-top:8px;text-align:center;}
.article-body code{
  font-family:"DIN Alternate","Helvetica Neue",ui-monospace,monospace;
  font-size:.92em;background:#F1F6F5;border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;
}
.article-body pre{
  background:var(--dark);color:var(--dark-text);padding:16px 18px;
  border-radius:12px;overflow:auto;margin:0 0 1.2em;
}
.article-body pre code{background:none;border:0;color:inherit;padding:0;}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 1.2em;font-size:15px;display:block;overflow-x:auto;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;white-space:nowrap;}
.article-body th{background:#F7FAF9;font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}
.empty-state{text-align:center;padding:56px 20px;}
.empty-state i{font-size:30px;color:#C3D2CF;}
.empty-state h3{font-size:20px;font-weight:700;margin:16px 0 8px;}
.empty-state p{font-size:14.5px;color:var(--muted);margin-bottom:20px;}

/* ---------- 相关推荐 ---------- */
.card-grid{display:grid;gap:20px;grid-template-columns:1fr;}
@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr);}}
.post-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CFE0DC;}
.post-thumb{aspect-ratio:16/10;overflow:hidden;background:#E8F0EE;}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.post-card:hover .post-thumb img{transform:scale(1.03);}
.post-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-body h3{font-size:17px;line-height:1.45;font-weight:600;}
.post-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-top:auto;}
.post-meta .tag{background:var(--accent-soft);color:var(--accent);border-radius:999px;padding:2px 10px;font-size:12px;font-weight:600;}
.post-body p{font-size:14px;color:var(--muted);line-height:1.7;}
.readmore{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.post-card:hover .readmore{gap:10px;}

/* ---------- FAQ ---------- */
.faq-panel{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  padding:8px 20px;max-width:840px;margin:0 auto;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:18px 4px 18px 0;font-size:16.5px;font-weight:600;line-height:1.5;
  transition:background .18s ease-out,color .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex-shrink:0;color:var(--brand);font-size:20px;font-weight:400;
  line-height:1.2;transition:transform .2s ease-out;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item summary:hover{color:var(--brand);}
.faq-item .faq-answer{padding:0 24px 20px 14px;font-size:15px;line-height:1.8;color:var(--muted);border-left:2px solid var(--brand);margin-bottom:16px;margin-left:2px;}

/* ---------- 表单 ---------- */
.form-panel{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  padding:24px 20px;
}
@media(min-width:768px){.form-panel{padding:34px 36px;}}
.form-grid{display:grid;gap:26px;grid-template-columns:1fr;}
@media(min-width:1024px){.form-grid{grid-template-columns:5fr 7fr;gap:40px;}}
.form-intro h2{font-size:24px;font-weight:700;line-height:1.35;margin-bottom:14px;}
@media(min-width:1024px){.form-intro h2{font-size:28px;}}
.form-intro p{font-size:14.5px;color:var(--muted);margin-bottom:16px;}
.form-points{display:flex;flex-direction:column;gap:10px;margin-bottom:18px;}
.form-points span{display:flex;align-items:center;gap:9px;font-size:14.5px;}
.form-points i{color:var(--brand);font-size:14px;}
.privacy-note{font-size:12.5px;color:var(--muted);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:7px;}
.field label .req{color:var(--accent);}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-input);
  background:#FBFDFC;padding:0 14px;height:46px;font-size:14.5px;
  outline:none;transition:border-color .18s ease-out,box-shadow .18s ease-out,background .18s ease-out;
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(15,138,124,.12);}
.field input::placeholder,.field textarea::placeholder{color:#9AA8AC;}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:6px;}
.form-foot small{font-size:12px;color:var(--muted);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--dark-text);padding:56px 0 28px;margin-top:8px;}
.footer-grid{display:grid;gap:32px;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:1.5fr 1fr 1fr 1fr;gap:40px;}}
.site-footer h4{font-size:15px;font-weight:600;margin-bottom:16px;color:#fff;}
.site-footer p{font-size:14px;color:var(--dark-muted);line-height:1.8;max-width:34ch;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{background:linear-gradient(140deg,var(--brand),#0B9E8E);}
.footer-brand span{display:flex;flex-direction:column;line-height:1.16;}
.footer-brand strong{font-size:16px;color:#fff;}
.footer-brand em{font-style:normal;font-size:11px;color:var(--dark-muted);letter-spacing:.08em;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  border:1px solid rgba(232,241,239,.18);color:var(--dark-muted);font-size:14px;
  transition:all .18s ease-out;
}
.footer-social a:hover{border-color:#7FE0D4;color:#7FE0D4;transform:translateY(-2px);}
.footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:var(--dark-muted);}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(232,241,239,.14);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:rgba(232,241,239,.58);
}
@media print{.cmd-bar,.site-footer{display:none;}}

/* roulang page: category1 */
:root{
  --brand:#0F8A7C;
  --brand-deep:#07564E;
  --accent:#F2543D;
  --accent-soft:#FFEDE9;
  --canvas:#F4F7F6;
  --surface:#FFFFFF;
  --line:#E2EAE8;
  --ink:#10161A;
  --muted:#5B6B70;
  --dark:#0C1A1F;
  --dark-text:#E8F1EF;
  --dark-muted:rgba(232,241,239,.68);
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(12,26,31,.05),0 8px 24px -12px rgba(12,26,31,.10);
  --shadow-hover:0 16px 36px -18px rgba(12,26,31,.22);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--canvas);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.hero :focus-visible,.site-footer :focus-visible{outline-color:#7FE0D4}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media(min-width:640px){.container{padding:0 28px}}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- 命令栏导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease,background-color .2s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(12,26,31,.45);background:rgba(255,255,255,.97)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand:hover{color:inherit}
.brand-mark{
  width:36px;height:36px;flex-shrink:0;border-radius:11px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#fff;font-weight:700;font-size:18px;line-height:36px;text-align:center;
  box-shadow:0 8px 18px -10px rgba(15,138,124,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:-0.01em}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.06em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;display:inline-block;padding:9px 14px;border-radius:9px;
  font-size:15px;color:var(--muted);transition:color .18s ease,background-color .18s ease;
}
.nav-link:hover{color:var(--ink);background:#F1F6F5}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;background:var(--brand);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.command-search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 12px;min-width:236px;
  background:#F1F6F5;border:1px solid transparent;border-radius:var(--radius-btn);
  transition:border-color .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.command-search i{font-size:13px;color:var(--muted)}
.command-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;line-height:1.4;
}
.command-search input::placeholder{color:#93A5A8}
.command-search .kbd{
  font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;background:#fff;white-space:nowrap;
}
.command-search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(15,138,124,.12)}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--radius-btn);color:var(--muted);background:#fff;
  transition:color .18s ease,border-color .18s ease,transform .18s ease;
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-1px)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -14px rgba(15,138,124,.95)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.menu-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;color:var(--muted);cursor:pointer}

@media(max-width:1100px){
  .command-search{min-width:180px}
  .command-search .kbd{display:none}
}
@media(max-width:1023px){
  .header-inner{height:64px}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center}
  .main-nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    padding:8px 20px 16px;background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 18px 30px -26px rgba(12,26,31,.5);
    display:none;
  }
  .main-nav.open{display:flex}
  .nav-link{padding:12px 10px;border-radius:8px;font-size:15px}
  .nav-link.active::after{display:none}
  .nav-link.active{background:#EAF5F3}
  .command-search{display:none}
}
@media(max-width:639px){
  .header-actions .btn-primary{padding:0 14px;font-size:14px}
  .brand-text em{display:none}
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--dark);color:var(--dark-text)}
.hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;
  background-color:var(--dark);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(12,26,31,.95) 0%,rgba(12,26,31,.82) 46%,rgba(12,26,31,.62) 100%);
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1fr;gap:40px;
  padding-top:56px;padding-bottom:56px;
}
@media(min-width:1024px){
  .hero-inner{grid-template-columns:7fr 5fr;gap:56px;padding-top:84px;padding-bottom:88px;align-items:center}
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:#7FE0D4;
  border:1px solid rgba(127,224,212,.32);border-radius:999px;padding:5px 12px;margin-bottom:18px;
}
.hero h1{
  font-size:30px;line-height:1.24;letter-spacing:-0.01em;color:#fff;max-width:640px;
}
@media(min-width:640px){.hero h1{font-size:38px}}
@media(min-width:1024px){.hero h1{font-size:47px}}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.8;color:var(--dark-muted);max-width:600px}
@media(min-width:1024px){.hero-sub{font-size:19px}}
.hero-points{display:grid;gap:10px;margin-top:22px}
.hero-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:rgba(232,241,239,.86)}
.hero-points i{color:#7FE0D4;font-size:13px;margin-top:6px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero .btn-outline{background:transparent;border-color:rgba(232,241,239,.28);color:#E8F1EF}
.hero .btn-outline:hover{border-color:#7FE0D4;color:#7FE0D4;background:rgba(127,224,212,.08)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;
  background:linear-gradient(135deg,#12333A,#0C1A1F);
  border:1px solid rgba(232,241,239,.14);
}
.hero-media .media-note{
  margin-top:14px;display:flex;gap:12px;align-items:center;
  font-size:13px;color:var(--dark-muted);
}
.hero-media .media-note span{display:inline-flex;align-items:center;gap:6px}

/* ---------- 通用区块 ---------- */
.section{padding:48px 0}
@media(min-width:1024px){.section{padding:84px 0}}
.section-head{margin-bottom:28px}
@media(min-width:1024px){.section-head{margin-bottom:40px}}
.section-tag{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--brand);font-weight:600}
.section-tag::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--brand)}
.section-title{margin-top:12px;font-size:26px;line-height:1.3}
@media(min-width:1024px){.section-title{font-size:32px}}
.section-desc{margin-top:12px;font-size:15px;color:var(--muted);max-width:760px}

/* ---------- 要点卡 ---------- */
.point-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:640px){.point-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.point-grid{grid-template-columns:repeat(4,1fr)}}
.point-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease;
}
.point-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.point-card i{font-size:16px;color:var(--brand)}
.point-card h3{margin-top:14px;font-size:18px;line-height:1.42}
.point-card p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- 场景卡片 ---------- */
.scene-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:640px){.scene-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.scene-grid{grid-template-columns:repeat(3,1fr)}}
.scene-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CDDFDC}
.scene-thumb{position:relative;overflow:hidden;background:#E8EFEE}
.scene-thumb img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  background:linear-gradient(135deg,#DCE9E7,#C6DBD7);
  transition:transform .3s ease;
}
.scene-card:hover .scene-thumb img{transform:scale(1.03)}
.scene-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.scene-badges{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1.6;padding:3px 10px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent);font-weight:600;
}
.badge-soft{background:#EAF5F3;color:var(--brand)}
.scene-body h3{margin-top:12px;font-size:19px;line-height:1.42}
.scene-body p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.8}
.scene-meta{margin-top:14px;font-size:13px;color:var(--muted);display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.scene-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3D2D0}
.scene-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.text-link{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--brand)}
.text-link i{font-size:12px;transition:transform .18s ease}
.text-link:hover i{transform:translateX(3px)}

/* ---------- 流程 ---------- */
.flow{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.flow-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:640px){.flow-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.flow-grid{grid-template-columns:repeat(4,1fr)}}
.flow-step{position:relative;padding-left:0}
.flow-step .step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;background:#EAF5F3;color:var(--brand);
  font-weight:700;font-size:14px;font-family:"DIN Alternate","Helvetica Neue",ui-monospace,monospace;
}
.flow-step h3{margin-top:14px;font-size:18px;line-height:1.42}
.flow-step p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.8}
.flow-step::after{
  content:"";position:absolute;top:17px;left:44px;right:-20px;height:1px;
  background:linear-gradient(90deg,var(--line),rgba(226,234,232,0));
}
@media(max-width:1023px){.flow-step::after{display:none}}

/* ---------- 报错清单行 ---------- */
.list-rows{border-top:1px solid var(--line)}
.row-item{
  display:flex;align-items:center;gap:16px;
  padding:18px 4px;border-bottom:1px solid var(--line);
  transition:background-color .18s ease,padding-left .18s ease;
}
.row-item:hover{background:#F7FAF9;padding-left:12px}
.row-icon{
  width:36px;height:36px;flex-shrink:0;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:#EAF5F3;color:var(--brand);font-size:14px;
}
.row-main{flex:1;min-width:0}
.row-main h3{font-size:17px;line-height:1.45}
.row-main p{margin-top:4px;font-size:14px;color:var(--muted);line-height:1.7}
.row-item .arrow{color:var(--muted);font-size:13px;flex-shrink:0;transition:transform .18s ease,color .18s ease}
.row-item:hover .arrow{color:var(--brand);transform:translateX(3px)}

/* ---------- 对比 ---------- */
.compare{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:1024px){.compare{grid-template-columns:1fr 1fr;gap:24px}}
.compare-col{
  border-radius:var(--radius-card);padding:24px;border:1px solid var(--line);background:var(--surface);
}
.compare-col.before{color:var(--muted)}
.compare-col.after{border-color:var(--brand);background:#F2FAF8}
.compare-col h3{font-size:19px;color:var(--ink)}
.compare-col .col-note{margin-top:6px;font-size:13px;color:var(--muted)}
.compare-col ul{margin-top:18px;display:grid;gap:12px}
.compare-col li{display:flex;gap:10px;font-size:15px;line-height:1.75}
.compare-col li i{margin-top:6px;font-size:12px}
.compare-col.before li{color:var(--muted)}
.compare-col.before li i{color:#B6C4C2}
.compare-col.after li{color:var(--ink)}
.compare-col.after li i{color:var(--brand)}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;gap:16px}
@media(min-width:1024px){.faq-wrap{grid-template-columns:1fr 1fr;gap:20px 32px}}
details.faq{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);
  padding:0 22px;transition:border-color .18s ease,box-shadow .18s ease;
}
details.faq[open]{border-color:#CDDFDC;box-shadow:var(--shadow-card);position:relative}
details.faq[open]::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:2px;border-radius:2px;background:var(--brand);
}
details.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:16.5px;font-weight:600;line-height:1.55;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary:hover{color:var(--brand)}
details.faq summary .sign{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--brand);font-size:12px;
  transition:transform .2s ease,background-color .2s ease;
}
details.faq[open] summary .sign{transform:rotate(180deg);background:#EAF5F3}
details.faq .faq-body{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--muted);max-width:640px}

/* ---------- 表单 ---------- */
.assist{
  background:var(--dark);color:var(--dark-text);
  background-image:linear-gradient(100deg,rgba(12,26,31,.97) 0%,rgba(12,26,31,.88) 100%),url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
}
.assist-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media(min-width:1024px){.assist-grid{grid-template-columns:5fr 7fr;gap:48px;align-items:start}}
.assist h2{font-size:26px;line-height:1.3;color:#fff}
@media(min-width:1024px){.assist h2{font-size:32px}}
.assist .lead{margin-top:14px;font-size:15px;color:var(--dark-muted);max-width:460px}
.assist-points{margin-top:22px;display:grid;gap:12px}
.assist-points li{display:flex;gap:10px;font-size:15px;color:rgba(232,241,239,.88)}
.assist-points i{color:#7FE0D4;margin-top:6px;font-size:12px}
.privacy{margin-top:20px;font-size:12px;color:rgba(232,241,239,.55);line-height:1.8}
.form-panel{background:var(--surface);border-radius:var(--radius-card);padding:24px;box-shadow:0 24px 60px -30px rgba(0,0,0,.6)}
@media(min-width:640px){.form-panel{padding:30px}}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field .req{color:var(--accent)}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;font-size:15px;outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.75;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,138,124,.14)}
.field input::placeholder,.field textarea::placeholder{color:#9BA9AC}
.form-panel .btn{width:100%}
.form-note{margin-top:14px;font-size:12px;color:var(--muted);line-height:1.8}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--dark-text);padding:56px 0 28px;margin-top:0}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@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:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:34px;height:34px;line-height:34px;font-size:17px}
.footer-brand strong{display:block;font-size:17px;color:#fff;line-height:1.3}
.footer-brand em{font-style:normal;font-size:11px;color:var(--dark-muted);letter-spacing:.06em}
.site-footer p{font-size:14px;line-height:1.9;color:var(--dark-muted);max-width:360px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{
  width:36px;height:36px;border-radius:10px;border:1px solid rgba(232,241,239,.18);
  display:inline-flex;align-items:center;justify-content:center;color:rgba(232,241,239,.72);
  transition:color .18s ease,border-color .18s ease,transform .18s ease;
}
.footer-social a:hover{color:#fff;border-color:rgba(232,241,239,.5);transform:translateY(-2px)}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:14px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:rgba(232,241,239,.72)}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(232,241,239,.14);
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;
  font-size:12px;color:rgba(232,241,239,.55);
}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* roulang page: category2 */
:root{
    --brand:#0F8A7C;
    --brand-deep:#07564E;
    --accent:#F2543D;
    --accent-soft:#FFEDE9;
    --canvas:#F4F7F6;
    --surface:#FFFFFF;
    --line:#E2EAE8;
    --ink:#10161A;
    --muted:#5B6B70;
    --dark:#0C1A1F;
    --radius-card:14px;
    --radius-btn:10px;
    --shadow-card:0 1px 2px rgba(12,26,31,.05), 0 8px 24px -12px rgba(12,26,31,.10);
    --shadow-hover:0 16px 36px -18px rgba(12,26,31,.22);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  html body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--ink);
    background:var(--canvas);
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none;transition:color .18s ease, border-color .18s ease, background-color .18s ease}
  img{max-width:100%;display:block}
  .num{font-family:"DIN Alternate","Helvetica Neue",ui-monospace,monospace}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

  :focus-visible{outline:2px solid var(--brand);outline-offset:2px}
  .dark-area :focus-visible,.site-footer :focus-visible{outline-color:#7FE0D4}

  /* ============ header ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.94);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{display:flex;align-items:center;gap:22px;height:72px}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{
    width:36px;height:36px;border-radius:10px;flex-shrink:0;
    display:grid;place-items:center;
    background:linear-gradient(135deg,var(--brand),var(--brand-deep));
    color:#fff;font-size:17px;font-weight:700;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.2}
  .brand-text strong{font-size:16px;font-weight:700;letter-spacing:-.01em}
  .brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.02em}
  .main-nav{display:flex;align-items:center;gap:4px;margin-left:6px}
  .nav-link{
    padding:8px 14px;border-radius:999px;font-size:15px;color:var(--muted);
    transition:background-color .18s ease,color .18s ease;
  }
  .nav-link:hover{color:var(--ink);background:#F1F6F5}
  .nav-link.active{color:var(--brand);background:rgba(15,138,124,.09);font-weight:600}
  .header-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
  .command-search{
    display:flex;align-items:center;gap:8px;height:40px;width:236px;padding:0 12px;
    border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--surface);
    transition:border-color .18s ease, box-shadow .18s ease;
  }
  .command-search i{color:var(--muted);font-size:13px}
  .command-search input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--ink)}
  .command-search input::placeholder{color:#9AA9AD}
  .command-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,138,124,.13)}
  .key-hint{
    font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:6px;
    padding:1px 6px;white-space:nowrap;background:#FAFCFC;
  }
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
    transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -14px rgba(15,138,124,.8)}
  .btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink)}
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
  .btn-sm{height:40px;padding:0 16px;font-size:14px}
  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
    background:var(--surface);color:var(--ink);cursor:pointer;
  }

  /* ============ hero ============ */
  .hero{
    position:relative;color:#E8F1EF;background-color:var(--dark);
    background-image:linear-gradient(100deg,rgba(12,26,31,.94) 0%,rgba(12,26,31,.74) 46%,rgba(12,26,31,.46) 100%),
      url('/assets/images/backpic/back-1.png');
    background-size:cover;background-position:center;
    padding:64px 0 84px;
  }
  .hero .container{position:relative;z-index:2}
  .crumb{font-size:13px;color:rgba(232,241,239,.66);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
  .crumb a:hover{color:#fff}
  .crumb span.sep{color:rgba(232,241,239,.35)}
  .crumb strong{color:#E8F1EF;font-weight:500}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.08em;font-weight:700;color:#7FE0D4;
    text-transform:uppercase;
  }
  .eyebrow::before{content:"";width:20px;height:2px;background:#7FE0D4;border-radius:2px}
  .eyebrow.dark{color:var(--brand)}
  .eyebrow.dark::before{background:var(--brand)}
  .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center;margin-top:22px}
  .hero h1{
    font-size:46px;line-height:1.22;font-weight:700;letter-spacing:-.01em;
    margin:16px 0 18px;
  }
  .hero-sub{font-size:19px;line-height:1.7;color:rgba(232,241,239,.82);max-width:620px;margin:0}
  .hero-points{display:flex;flex-wrap:wrap;gap:18px;margin:24px 0 0;padding:0;list-style:none;font-size:15px;color:rgba(232,241,239,.88)}
  .hero-points li{display:inline-flex;align-items:center;gap:8px}
  .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex-shrink:0}
  .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
  .btn-outline-light{background:transparent;border-color:rgba(232,241,239,.3);color:#E8F1EF}
  .btn-outline-light:hover{border-color:#7FE0D4;color:#7FE0D4}
  .hero-visual{position:relative}
  .hero-visual img{
    border-radius:var(--radius-card);border:1px solid rgba(232,241,239,.14);
    box-shadow:0 28px 60px -26px rgba(0,0,0,.75);
  }
  .hero-badge{
    position:absolute;left:18px;bottom:18px;
    display:inline-flex;align-items:center;gap:8px;
    background:rgba(12,26,31,.82);border:1px solid rgba(232,241,239,.18);
    border-radius:999px;padding:8px 14px;font-size:13px;color:#E8F1EF;
    backdrop-filter:blur(6px);
  }
  .hero-badge i{color:#7FE0D4}

  /* ============ section base ============ */
  .section{padding:84px 0}
  .section.tight{padding:64px 0}
  .section-plain{background:var(--canvas)}
  .section-white{background:var(--surface)}
  .section-dark{background:var(--dark);color:#E8F1EF}
  .section-head{max-width:760px;margin-bottom:40px}
  .section-head h2{font-size:32px;line-height:1.3;font-weight:700;margin:12px 0 12px;letter-spacing:-.01em}
  .section-head p{font-size:15px;line-height:1.85;color:var(--muted);margin:0}
  .section-dark .section-head p{color:rgba(232,241,239,.7)}
  .section-dark .section-head h2{color:#fff}

  /* ============ split layout ============ */
  .split{display:grid;grid-template-columns:296px minmax(0,1fr);gap:40px;align-items:start}
  .side-rail{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
  .rail-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:22px;box-shadow:var(--shadow-card);
  }
  .rail-title{
    font-size:12px;letter-spacing:.08em;font-weight:700;color:var(--brand);
    margin:0 0 12px;
  }
  .rail-nav{display:flex;flex-direction:column;gap:2px}
  .rail-nav a{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    padding:10px 12px;border-radius:10px;font-size:14px;color:var(--ink);
    border-left:2px solid transparent;
  }
  .rail-nav a:hover{background:#F7FAF9;color:var(--brand);border-left-color:var(--brand)}
  .rail-nav a i{font-size:11px;color:var(--muted)}
  .rail-note{font-size:13px;line-height:1.75;color:var(--muted);margin:6px 0 0}
  .rail-list{list-style:none;padding:0;margin:14px 0 0;display:flex;flex-direction:column;gap:12px}
  .rail-list li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--ink)}
  .rail-list i{color:var(--brand);margin-top:5px;font-size:12px}
  .rail-call{
    background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--brand);
    border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-card);
  }
  .rail-call strong{display:block;font-size:15px;margin-bottom:6px}
  .rail-call p{margin:0 0 14px;font-size:13px;line-height:1.75;color:var(--muted)}

  /* ============ clause blocks ============ */
  .clause{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:28px;margin-bottom:22px;box-shadow:var(--shadow-card);
    transition:box-shadow .2s ease,transform .2s ease;
  }
  .clause:hover{box-shadow:var(--shadow-hover)}
  .clause-head{display:flex;gap:14px;align-items:flex-start}
  .clause-num{
    flex-shrink:0;font-size:13px;font-weight:700;color:var(--accent);
    background:var(--accent-soft);border-radius:8px;padding:3px 9px;line-height:1.6;
  }
  .clause h3{font-size:21px;line-height:1.42;font-weight:600;margin:0 0 8px}
  .clause .lede{margin:0;font-size:15.5px;line-height:1.85;color:#33454A}
  .row-list{margin-top:20px;border-top:1px solid var(--line)}
  .row-item{
    display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
    padding:16px 6px;border-bottom:1px solid var(--line);
    transition:background-color .18s ease;
  }
  .row-item:last-child{border-bottom:0}
  .row-item:hover{background:#F7FAF9}
  .row-item h4{font-size:16px;line-height:1.5;font-weight:600;margin:0 0 4px}
  .row-item p{margin:0;font-size:14px;line-height:1.7;color:var(--muted)}
  .row-meta{display:flex;align-items:center;gap:14px;white-space:nowrap;font-size:13px;color:var(--muted);padding-top:3px}
  .row-meta i{color:var(--brand);font-size:12px}

  /* ============ risk cards ============ */
  .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:start}
  .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;align-items:start}
  .risk-card{
    position:relative;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-card);
    transition:box-shadow .2s ease,transform .2s ease;
  }
  .risk-card::before{
    content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:0 3px 3px 0;
    background:var(--brand);opacity:0;transition:opacity .2s ease;
  }
  .risk-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
  .risk-card:hover::before{opacity:1}
  .risk-card i.lead{font-size:18px;color:var(--brand);margin-bottom:14px;display:block}
  .risk-card h3{font-size:18px;line-height:1.45;font-weight:600;margin:0 0 8px}
  .risk-card p{margin:0;font-size:14px;line-height:1.8;color:var(--muted)}

  /* ============ steps ============ */
  .step{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:26px;box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease;
  }
  .step:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
  .step-num{font-size:30px;font-weight:700;line-height:1;color:var(--brand);letter-spacing:-.02em}
  .step h3{font-size:19px;font-weight:600;margin:14px 0 8px}
  .step p{margin:0;font-size:14px;line-height:1.8;color:var(--muted)}

  /* ============ compare ============ */
  .compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
  .compare-col{
    border-radius:var(--radius-card);padding:28px;background:var(--surface);
    border:1px solid var(--line);box-shadow:var(--shadow-card);
  }
  .compare-col.after{border-color:var(--brand);background:#F2FAF8}
  .compare-col h3{font-size:19px;font-weight:600;margin:0 0 6px}
  .compare-col .tag{
    display:inline-block;font-size:12px;font-weight:600;border-radius:999px;
    padding:3px 10px;margin-bottom:16px;
    background:#EEF2F2;color:var(--muted);
  }
  .compare-col.after .tag{background:var(--accent-soft);color:var(--accent)}
  .compare-item{display:flex;gap:10px;font-size:15px;line-height:1.75;padding:12px 0;border-bottom:1px dashed var(--line)}
  .compare-item:last-child{border-bottom:0}
  .compare-col.before .compare-item{color:var(--muted)}
  .compare-col.before .compare-item i{color:#B6C2C2}
  .compare-col.after .compare-item{color:var(--ink)}
  .compare-col.after .compare-item i{color:var(--brand)}
  .compare-item i{margin-top:5px;font-size:12px;flex-shrink:0}

  /* ============ faq ============ */
  .faq-wrap{column-count:2;column-gap:44px}
  .faq-item{
    break-inside:avoid;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-card);margin-bottom:14px;overflow:hidden;
    box-shadow:var(--shadow-card);
  }
  .faq-item summary{
    list-style:none;cursor:pointer;position:relative;
    padding:18px 46px 18px 18px;font-size:16.5px;font-weight:600;line-height:1.55;
    border-left:2px solid transparent;transition:background-color .18s ease,border-color .18s ease,color .18s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);
    font-size:20px;line-height:1;color:var(--brand);transition:transform .2s ease;
  }
  .faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
  .faq-item summary:hover{background:#F7FAF9}
  .faq-item[open] summary{border-left-color:var(--brand);color:var(--brand)}
  .faq-item .answer{padding:0 20px 20px 20px;font-size:15px;line-height:1.85;color:var(--muted)}

  /* ============ assist form ============ */
  .assist-panel{
    display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:start;
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:40px;box-shadow:var(--shadow-card);
  }
  .assist-panel h2{font-size:28px;line-height:1.32;font-weight:700;margin:12px 0 14px}
  .assist-panel .lead{font-size:15px;line-height:1.85;color:var(--muted);margin:0 0 22px}
  .assist-points{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:14px}
  .assist-points li{display:flex;gap:10px;font-size:14.5px;line-height:1.75}
  .assist-points i{color:var(--brand);margin-top:5px;font-size:12px}
  .privacy-note{margin:22px 0 0;font-size:12.5px;line-height:1.75;color:var(--muted)}
  .field{margin-bottom:18px}
  .field label{display:block;font-size:13px;font-weight:600;margin-bottom:7px}
  .req{color:var(--accent)}
  .form-control{
    width:100%;height:46px;border:1px solid var(--line);border-radius:var(--radius-btn);
    padding:0 14px;background:#fff;font-size:15px;color:var(--ink);
    transition:border-color .18s ease,box-shadow .18s ease;
  }
  textarea.form-control{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical}
  .form-control::placeholder{color:#9AA9AD}
  .form-control:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,138,124,.13)}
  .form-foot{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:4px}
  .form-tip{font-size:12px;color:var(--muted);margin:12px 0 0}

  /* ============ footer ============ */
  .site-footer{background:var(--dark);color:#E8F1EF;padding:64px 0 0}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .footer-brand .brand-mark{background:linear-gradient(135deg,var(--brand),var(--brand-deep))}
  .footer-brand strong{display:block;font-size:16px;font-weight:700;line-height:1.3}
  .footer-brand em{font-style:normal;font-size:12px;color:rgba(232,241,239,.62)}
  .site-footer p{font-size:14px;line-height:1.85;color:rgba(232,241,239,.68);margin:0 0 18px;max-width:340px}
  .site-footer h4{font-size:14px;font-weight:600;color:#fff;margin:0 0 16px;letter-spacing:.04em}
  .footer-links{list-style:none;padding:0;margin:0}
  .footer-links li{margin-bottom:10px}
  .footer-links a{font-size:14px;color:rgba(232,241,239,.72)}
  .footer-links a:hover{color:#fff;text-decoration:underline}
  .footer-social{display:flex;gap:10px}
  .footer-social a{
    width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
    border:1px solid rgba(232,241,239,.18);color:rgba(232,241,239,.72);font-size:14px;
    transition:border-color .18s ease,color .18s ease,transform .18s ease;
  }
  .footer-social a:hover{border-color:#7FE0D4;color:#7FE0D4;transform:translateY(-2px)}
  .footer-bottom{
    display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
    padding:20px 0;border-top:1px solid rgba(232,241,239,.14);
    font-size:12px;color:rgba(232,241,239,.55);
  }

  /* ============ responsive ============ */
  @media (max-width:1180px){
    .hero h1{font-size:40px}
    .grid-4{grid-template-columns:repeat(2,1fr)}
  }
  @media (max-width:1023px){
    .container{padding:0 28px}
    .section{padding:64px 0}
    .hero{padding:52px 0 68px}
    .hero-grid{grid-template-columns:1fr;gap:36px}
    .hero h1{font-size:36px}
    .hero-sub{font-size:17.5px}
    .split{grid-template-columns:1fr;gap:28px}
    .side-rail{position:static}
    .assist-panel{grid-template-columns:1fr;gap:30px;padding:32px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .faq-wrap{column-count:1}
  }
  @media (max-width:900px){
    .command-search{display:none}
  }
  @media (max-width:768px){
    .container{padding:0 20px}
    .header-inner{height:66px;gap:12px}
    .main-nav{
      display:none;position:absolute;left:20px;right:20px;top:70px;
      flex-direction:column;align-items:stretch;gap:6px;margin:0;
      background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
      padding:12px;box-shadow:var(--shadow-hover);
    }
    .main-nav.open{display:flex}
    .nav-link{padding:11px 14px;border-radius:10px}
    .nav-toggle{display:block}
    .hero h1{font-size:31px}
    .hero-sub{font-size:16.5px}
    .hero-points{gap:12px;font-size:14px}
    .hero-cta .btn{flex:1 1 100%}
    .section{padding:52px 0}
    .section-head h2{font-size:26px}
    .section-head{margin-bottom:28px}
    .grid-4,.grid-2{grid-template-columns:1fr}
    .compare{grid-template-columns:1fr}
    .clause{padding:22px}
    .assist-panel{padding:24px}
    .assist-panel h2{font-size:24px}
    .row-item{flex-direction:column;gap:8px}
    .row-meta{padding-top:0}
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .footer-bottom{flex-direction:column;gap:6px}
    .site-footer{padding-top:48px}
  }
  @media (max-width:520px){
    .hero h1{font-size:27px}
    .clause h3{font-size:19px}
    .step-num{font-size:26px}
    .btn{width:100%}
    .btn-sm{width:auto}
  }