/* roulang page: index */
:root{
  --c-primary:#1C6E8C;
  --c-primary-deep:#114E66;
  --c-primary-soft:#E7F1F5;
  --c-accent:#E4713A;
  --c-accent-soft:#FDECE3;
  --c-ink:#10262F;
  --c-ink-2:#48606B;
  --c-ink-3:#8AA3AD;
  --c-line:#DCE7EC;
  --c-bg:#FFFFFF;
  --c-bg-2:#F4F8FA;
  --c-ok:#2E9E7B;
  --c-warn:#C9553D;
  --shadow-sm:0 1px 2px rgba(16,42,54,.06);
  --shadow-md:0 1px 2px rgba(16,42,54,.06),0 12px 28px -14px rgba(16,42,54,.14);
  --shadow-lg:0 2px 4px rgba(16,42,54,.07),0 20px 44px -20px rgba(16,42,54,.22);
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --nav-w:248px;
  --nav-w-mini:72px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer;border:0;background:none}
input,textarea,select{font:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.article-w{max-width:800px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .2s ease-out, box-shadow .2s ease-out, background-color .2s ease-out, color .2s ease-out, border-color .2s ease-out;
  border:1px solid transparent;
}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm)}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:var(--shadow-sm)}
.btn-accent:hover{background:#cf6029;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-soft);transform:translateY(-1px)}
.btn-ghost{color:var(--c-primary);font-weight:600;padding:0 6px;min-height:auto;gap:6px}
.btn-ghost i{transition:transform .2s ease-out}
.btn-ghost:hover i{transform:translateX(3px)}
.btn-lg{min-height:52px;padding:0 28px;font-size:16px}
.btn-block{width:100%}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;line-height:1.7;letter-spacing:.02em;
  background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;
}
.tag-time{background:#F1F5F7;color:var(--c-ink-3);font-weight:500}
.tag-soft{background:var(--c-accent-soft);color:#B9521F}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--c-primary);
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--c-primary);opacity:.6}

/* ---------- 侧边竖向导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;height:100vh;z-index:40;
  display:none;flex-direction:column;
  width:var(--nav-w-mini);
  background:#fff;border-right:1px solid var(--c-line);
  padding:24px 12px 20px;
}
.side-brand{display:flex;align-items:center;gap:10px;padding:0 4px 20px;border-bottom:1px solid var(--c-line)}
.brand-logo{font-size:16px;font-weight:700;letter-spacing:.02em;color:var(--c-ink);line-height:1.35}
.brand-sub{display:block;font-size:12px;font-weight:500;color:var(--c-ink-3);line-height:1.6;margin-top:2px}
.side-status{
  margin:18px 4px 10px;display:flex;align-items:center;gap:8px;
  font-size:12px;color:var(--c-ink-2);
}
.dot{width:8px;height:8px;border-radius:50%;background:var(--c-ok);flex:none;box-shadow:0 0 0 4px rgba(46,158,123,.12)}
.side-menu{display:flex;flex-direction:column;gap:4px;margin-top:12px}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:46px;padding:0 12px;border-radius:10px;
  font-size:14px;font-weight:500;color:var(--c-ink-2);
  transition:background-color .2s ease-out,color .2s ease-out;
}
.side-link i{width:18px;text-align:center;font-size:15px;flex:none}
.side-link:hover{background:var(--c-bg-2);color:var(--c-primary)}
.side-link.active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:700}
.side-link.active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;background:var(--c-primary)}
.side-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--c-line)}
.side-contact{font-size:12px;line-height:1.8;color:var(--c-ink-3);padding:0 4px 12px}
.side-cta{width:100%}
.nav-label{display:none}
@media (min-width:1024px){
  .side-nav{display:flex}
}
@media (min-width:1280px){
  .side-nav{width:var(--nav-w);padding:28px 20px 24px}
  .nav-label{display:inline}
  .side-link{font-size:14.5px}
}

/* ---------- 移动端顶部导航 ---------- */
.topbar{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--c-line);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;min-height:64px;gap:16px}
.topbar-logo{font-size:16px;font-weight:700;line-height:1.3}
.topbar-logo span{display:block;font-size:11px;font-weight:500;color:var(--c-ink-3);letter-spacing:.02em}
.burger{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;color:var(--c-ink);font-size:17px;
  transition:background-color .2s ease-out,border-color .2s ease-out;
}
.burger:hover{background:var(--c-primary-soft);border-color:var(--c-primary)}
@media (min-width:1024px){ .topbar{display:none} }

.drawer-mask{
  position:fixed;inset:0;background:rgba(16,42,54,.42);z-index:60;
  opacity:0;visibility:hidden;transition:opacity .22s ease-out,visibility .22s ease-out;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;z-index:61;
  background:var(--c-primary-deep);color:#fff;padding:20px 22px 28px;
  display:flex;flex-direction:column;gap:6px;
  transform:translateX(100%);transition:transform .24s ease-out;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.18)}
.drawer-brand{font-size:16px;font-weight:700;line-height:1.4}
.drawer-brand span{display:block;font-size:12px;font-weight:400;color:rgba(255,255,255,.65);margin-top:2px}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.28);color:#fff;display:flex;align-items:center;justify-content:center}
.drawer-close:hover{background:rgba(255,255,255,.12)}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  min-height:48px;padding:0 4px;border-bottom:1px solid rgba(255,255,255,.1);
  font-size:15px;color:rgba(255,255,255,.92);
}
.drawer-link.active{color:#fff;font-weight:700}
.drawer-link i{font-size:12px;opacity:.6}
.drawer-link:hover{color:#fff}
.drawer-cta{margin-top:22px}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0}
.section-alt{background:var(--c-bg-2)}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;letter-spacing:-.01em}
.section-head p{margin-top:14px;font-size:15.5px;color:var(--c-ink-2);line-height:1.85}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;max-width:none}
@media (min-width:768px){ .section{padding:64px 0} }
@media (min-width:1024px){ .section{padding:96px 0} }

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--c-line)}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.90) 48%,rgba(255,255,255,.84) 100%);
}
.hero-inner{position:relative;z-index:1;padding-top:56px;padding-bottom:56px;display:grid;gap:40px}
.hero-copy h1{
  margin-top:18px;
  font-size:clamp(28px,4.2vw,44px);
  font-weight:700;line-height:1.25;letter-spacing:-.015em;
}
.hero-sub{margin-top:16px;font-size:18px;font-weight:600;color:var(--c-primary-deep);line-height:1.6}
.hero-desc{margin-top:16px;font-size:15.5px;color:var(--c-ink-2);line-height:1.9;max-width:560px}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px}
.hero-badges{margin-top:28px;display:flex;flex-wrap:wrap;gap:10px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;border:1px solid var(--c-line);background:rgba(255,255,255,.9);
  font-size:13px;color:var(--c-ink-2);
}
.hero-badge i{color:var(--c-primary);font-size:12px}
.hero-panel{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-md);overflow:hidden;
}
.hero-panel-img{height:180px;background:var(--c-primary-soft)}
.hero-panel-img img{width:100%;height:100%;object-fit:cover}
.hero-panel-body{padding:22px 24px 24px}
.hero-panel-body h2{font-size:15px;font-weight:700;color:var(--c-ink)}
.hero-panel-body>p{margin-top:6px;font-size:13px;color:var(--c-ink-3)}
.hero-stats{margin-top:18px;display:grid;grid-template-columns:repeat(3,1fr);gap:8px;border-top:1px solid var(--c-line);padding-top:18px}
.hero-stat b{display:block;font-size:24px;font-weight:700;color:var(--c-accent);line-height:1.2;font-family:Inter,system-ui,sans-serif}
.hero-stat span{display:block;margin-top:6px;font-size:12.5px;color:var(--c-ink-2);line-height:1.6}
@media (min-width:1024px){
  .hero-inner{grid-template-columns:minmax(0,1.15fr) minmax(320px,.85fr);align-items:center;padding-top:88px;padding-bottom:88px;gap:56px}
}
@media (max-width:639px){
  .hero-actions .btn{width:100%}
}

/* ---------- 三步阶梯 ---------- */
.steps{position:relative;display:grid;gap:20px}
.step{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:30px 26px 26px;transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:rgba(28,110,140,.35)}
.step-num{
  position:absolute;right:18px;top:8px;
  font-size:64px;font-weight:800;line-height:1;letter-spacing:-.03em;
  color:var(--c-primary);opacity:.12;font-family:Inter,system-ui,sans-serif;
}
.step h3{font-size:19px;font-weight:600;line-height:1.5}
.step p{margin-top:12px;font-size:14.5px;color:var(--c-ink-2);line-height:1.85;max-width:34ch}
.step-line{margin-top:22px;height:1px;background:linear-gradient(90deg,var(--c-primary),rgba(28,110,140,0))}
@media (min-width:768px){
  .steps{grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
  .step:nth-child(2){transform:translateY(24px)}
  .step:nth-child(2):hover{transform:translateY(22px)}
}
@media (max-width:767px){
  .steps{padding-left:26px}
  .steps::before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:1px;background:var(--c-line)}
  .step::before{content:"";position:absolute;left:-26px;top:34px;width:11px;height:11px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 0 4px var(--c-primary-soft)}
}

/* ---------- 入口网格（错位版式） ---------- */
.entry-grid{display:grid;gap:20px}
.entry-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:rgba(28,110,140,.35)}
.entry-card:hover h3{color:var(--c-primary)}
.entry-media{height:180px;background:var(--c-primary-soft)}
.entry-media img{width:100%;height:100%;object-fit:cover}
.entry-body{padding:24px 26px 26px;flex:1;display:flex;flex-direction:column}
.entry-body h3{font-size:19px;font-weight:600;line-height:1.5;transition:color .2s ease-out}
.entry-body p{margin-top:12px;font-size:14.5px;color:var(--c-ink-2);line-height:1.85}
.entry-list{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.entry-list li{position:relative;padding-left:18px;font-size:14px;color:var(--c-ink-2)}
.entry-list li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:2px;background:var(--c-primary)}
.entry-more{margin-top:auto;padding-top:20px}
.entry-side{display:grid;gap:20px}
.entry-mini{
  display:flex;gap:16px;align-items:flex-start;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);padding:20px;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.entry-mini:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:rgba(28,110,140,.35)}
.entry-mini img{width:64px;height:64px;border-radius:var(--radius-img);object-fit:cover;flex:none;background:var(--c-primary-soft)}
.entry-mini h3{font-size:16px;font-weight:600;line-height:1.5}
.entry-mini p{margin-top:8px;font-size:13.5px;color:var(--c-ink-2);line-height:1.8}
@media (min-width:900px){
  .entry-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);align-items:stretch}
  .entry-grid .entry-card.is-lead{grid-row:span 1}
}

/* ---------- 案例证明 ---------- */
.proof-grid{display:grid;gap:24px}
.proof-main{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden}
.proof-main img{width:100%;height:240px;object-fit:cover;background:var(--c-primary-soft)}
.proof-main-body{padding:26px 28px 30px}
.proof-main-body h3{font-size:20px;font-weight:600;line-height:1.55}
.proof-main-body p{margin-top:12px;font-size:14.5px;color:var(--c-ink-2);line-height:1.9}
.proof-metric{margin-top:22px;display:flex;align-items:baseline;gap:12px}
.proof-metric b{font-size:34px;font-weight:700;color:var(--c-accent);line-height:1;font-family:Inter,system-ui,sans-serif}
.proof-metric span{font-size:14px;color:var(--c-ink-2)}
.proof-side{display:grid;gap:16px;align-content:start}
.proof-item{
  display:flex;gap:16px;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);padding:20px;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.proof-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.proof-item img{width:56px;height:56px;border-radius:10px;object-fit:cover;flex:none;background:var(--c-primary-soft)}
.proof-item h3{font-size:15.5px;font-weight:600}
.proof-item p{margin-top:8px;font-size:13.5px;color:var(--c-ink-2);line-height:1.8}
.proof-item .tag{margin-top:10px}
.trust-strip{
  margin-top:32px;background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:var(--radius-card);
  display:grid;grid-template-columns:1fr;
}
.trust-cell{padding:20px 22px;border-bottom:1px solid var(--c-line)}
.trust-cell:last-child{border-bottom:0}
.trust-cell b{display:block;font-size:14.5px;font-weight:600}
.trust-cell span{display:block;margin-top:6px;font-size:13px;color:var(--c-ink-3)}
@media (min-width:768px){
  .proof-grid{grid-template-columns:minmax(0,3fr) minmax(0,2fr)}
  .trust-strip{grid-template-columns:repeat(5,1fr)}
  .trust-cell{border-bottom:0;border-right:1px solid var(--c-line)}
  .trust-cell:last-child{border-right:0}
}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;gap:16px}
.faq-col{display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden;transition:border-color .2s ease-out,box-shadow .2s ease-out}
.faq-item.open{border-color:rgba(28,110,140,.4);box-shadow:var(--shadow-sm)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:15.5px;font-weight:600;color:var(--c-ink);
  min-height:56px;
}
.faq-q:focus-visible{outline:2px solid var(--c-primary);outline-offset:-2px}
.faq-item.open .faq-q{color:var(--c-primary)}
.faq-q i{font-size:13px;color:var(--c-ink-3);transition:transform .2s ease-out}
.faq-item.open .faq-q i{transform:rotate(180deg);color:var(--c-primary)}
.faq-a{padding:0 22px 20px;font-size:14.5px;color:var(--c-ink-2);line-height:1.85;display:none;border-left:3px solid transparent}
.faq-item.open .faq-a{display:block;border-left:3px solid var(--c-primary);margin-left:22px;padding-left:16px;padding-right:16px}
@media (min-width:1024px){ .faq-grid{grid-template-columns:1fr 1fr;gap:16px 20px} }

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;gap:20px}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:rgba(28,110,140,.35)}
.news-card:hover h3{color:var(--c-primary)}
.news-thumb{height:168px;background:var(--c-primary-soft)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.news-body h3{
  margin-top:14px;font-size:16.5px;font-weight:600;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease-out;
}
.news-body p{
  margin-top:10px;font-size:13.5px;color:var(--c-ink-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-time{margin-top:auto;padding-top:16px;font-size:12.5px;color:var(--c-ink-3);display:flex;align-items:center;gap:8px}
.news-empty{
  grid-column:1/-1;background:var(--c-bg-2);border:1px dashed var(--c-line);border-radius:var(--radius-card);
  padding:52px 24px;text-align:center;
}
.news-empty i{font-size:28px;color:var(--c-ink-3)}
.news-empty b{display:block;margin-top:14px;font-size:16px;font-weight:600}
.news-empty span{display:block;margin-top:8px;font-size:13.5px;color:var(--c-ink-3)}
@media (min-width:640px){ .news-grid{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1024px){ .news-grid{grid-template-columns:repeat(3,1fr)} }

/* ---------- 开通 CTA ---------- */
.apply-card{
  background:#fff;border:1px solid rgba(28,110,140,.25);border-left:4px solid var(--c-accent);
  border-radius:var(--radius-card);box-shadow:var(--shadow-md);
  padding:32px 26px;display:grid;gap:32px;
}
.apply-copy h2{font-size:clamp(21px,2.4vw,28px);font-weight:700;line-height:1.4}
.apply-copy p{margin-top:14px;font-size:15px;color:var(--c-ink-2);line-height:1.9;max-width:44ch}
.apply-points{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.apply-points li{position:relative;padding-left:20px;font-size:14px;color:var(--c-ink-2)}
.apply-points li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--c-primary)}
.form-row{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.form-row label{font-size:13.5px;font-weight:600;color:var(--c-ink)}
.form-row input,.form-row select{
  height:48px;border:1px solid var(--c-line);border-radius:var(--radius-btn);
  padding:0 14px;font-size:14.5px;color:var(--c-ink);background:#fff;width:100%;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.form-row input::placeholder{color:var(--c-ink-3)}
.form-row input:focus,.form-row select:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(28,110,140,.15);
}
.form-note{margin-top:12px;font-size:12.5px;color:var(--c-ink-3);line-height:1.7}
@media (min-width:960px){
  .apply-card{grid-template-columns:minmax(0,1fr) minmax(320px,.8fr);padding:44px 48px;align-items:center}
}
@media (max-width:639px){
  .apply-form .btn{width:100%}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg-2);border-top:1px solid var(--c-line);padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;gap:32px}
.footer-brand h2{font-size:17px;font-weight:700;line-height:1.4}
.footer-brand p{margin-top:12px;font-size:13.5px;color:var(--c-ink-2);line-height:1.9;max-width:34ch}
.footer-col h3{font-size:15px;font-weight:600;color:var(--c-ink)}
.footer-col ul{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--c-ink-2);transition:color .2s ease-out}
.footer-col a:hover{color:var(--c-primary)}
.footer-col li{font-size:14px;color:var(--c-ink-2);line-height:1.8}
.footer-bottom{
  margin-top:44px;border-top:1px solid var(--c-line);padding:22px 0 26px;
  text-align:center;font-size:14px;color:var(--c-ink-3);
}
@media (min-width:640px){ .footer-grid{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px} }

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .step:hover,.entry-card:hover,.news-card:hover,.proof-item:hover,.btn:hover{transform:none !important}
}

/* roulang page: category1 */
:root{
  --c-primary:#1C6E8C;
  --c-primary-deep:#114E66;
  --c-primary-soft:#E7F1F5;
  --c-accent:#E4713A;
  --c-accent-soft:#FDECE3;
  --c-ink:#10262F;
  --c-ink-2:#48606B;
  --c-ink-3:#8AA3AD;
  --c-line:#DCE7EC;
  --c-bg:#FFFFFF;
  --c-bg-2:#F4F8FA;
  --c-ok:#2E9E7B;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,42,54,.06), 0 12px 28px -14px rgba(16,42,54,.14);
  --shadow-2:0 2px 4px rgba(16,42,54,.08), 0 18px 36px -16px rgba(16,42,54,.22);
  --sidebar-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease-out;}
button,input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;}
p{margin:0;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container-x{max-width:1200px;margin:0 auto;padding:0 24px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:#fff;border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;gap:24px;
  padding:28px 20px;overflow-y:auto;z-index:60;
}
.brand-block{display:flex;flex-direction:column;gap:4px;}
.brand-mark{
  display:flex;align-items:center;gap:10px;
  font-size:19px;font-weight:700;letter-spacing:.01em;color:var(--c-ink);
}
.brand-mark i{color:var(--c-primary);font-size:18px;}
.brand-sub{font-size:12px;color:var(--c-ink-3);letter-spacing:.04em;line-height:1.6;}
.side-menu{display:flex;flex-direction:column;gap:4px;}
.side-link{
  display:flex;align-items:center;gap:12px;
  min-height:44px;padding:10px 12px;border-radius:10px;
  color:var(--c-ink-2);font-size:14.5px;position:relative;
  transition:background .2s ease-out,color .2s ease-out;
}
.side-link i{width:18px;text-align:center;color:var(--c-ink-3);font-size:15px;transition:color .2s ease-out;}
.side-link:hover{background:var(--c-bg-2);color:var(--c-primary);}
.side-link:hover i{color:var(--c-primary);}
.side-link.active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:700;}
.side-link.active i{color:var(--c-primary);}
.side-link.active::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;background:var(--c-primary);
}
.side-status{
  border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:14px 16px;background:var(--c-bg-2);
}
.side-status .dot{
  display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--c-ok);margin-right:8px;vertical-align:middle;
}
.side-status strong{font-size:13.5px;font-weight:600;display:block;margin-bottom:4px;}
.side-status p{font-size:12.5px;color:var(--c-ink-3);line-height:1.7;}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;border-top:1px solid var(--c-line);padding-top:18px;}
.side-foot .row{font-size:13px;color:var(--c-ink-2);display:flex;gap:8px;align-items:flex-start;}
.side-foot .row i{color:var(--c-primary);margin-top:4px;font-size:12px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:all .2s ease-out;text-align:center;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:var(--shadow-1);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-soft);}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:#cf6130;transform:translateY(-1px);box-shadow:0 12px 24px -12px rgba(228,113,58,.65);}
.btn-accent:active{transform:translateY(0);box-shadow:none;}
.btn-block{width:100%;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);
  font-size:14.5px;font-weight:600;background:none;border:0;padding:6px 0;cursor:pointer;
}
.btn-text i{transition:transform .2s ease-out;}
.btn-text:hover i{transform:translateX(3px);}

/* ============ 顶部移动导航 ============ */
.topbar{
  display:none;position:sticky;top:0;z-index:70;
  align-items:center;justify-content:space-between;gap:12px;
  padding:12px 18px;background:#fff;border-bottom:1px solid var(--c-line);
}
.topbar .brand-mark{font-size:17px;}
.hamburger{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-primary);display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background .2s ease-out;
}
.hamburger:hover{background:var(--c-primary-soft);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,38,47,.42);opacity:0;visibility:hidden;
  transition:opacity .22s ease-out,visibility .22s ease-out;z-index:80;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;
  background:var(--c-primary);color:#fff;z-index:90;
  transform:translateX(100%);transition:transform .24s ease-out;
  padding:22px 22px 30px;overflow-y:auto;display:flex;flex-direction:column;gap:24px;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-head .brand-mark{color:#fff;font-size:17px;}
.drawer-head .brand-mark i{color:#fff;}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.4);
  background:transparent;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;
}
.drawer-menu{display:flex;flex-direction:column;gap:6px;}
.drawer-link{
  display:flex;align-items:center;gap:12px;min-height:48px;padding:12px 14px;
  border-radius:10px;font-size:15px;color:rgba(255,255,255,.9);
  transition:background .2s ease-out;
}
.drawer-link i{width:20px;text-align:center;}
.drawer-link:hover{background:rgba(255,255,255,.14);}
.drawer-link.active{background:rgba(255,255,255,.2);font-weight:700;color:#fff;}
.drawer-foot{border-top:1px solid rgba(255,255,255,.25);padding-top:18px;font-size:13px;line-height:1.9;color:rgba(255,255,255,.85);}
.drawer .btn-accent{width:100%;}

/* ============ 主区域 ============ */
.main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
main{flex:1;}
.section{padding:88px 0;}
.section-alt{background:var(--c-bg-2);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.06em;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:999px;padding:4px 12px;margin-bottom:14px;
}
.h1{font-size:clamp(28px,4.2vw,44px);font-weight:700;line-height:1.25;}
.h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;}
.h3{font-size:19px;font-weight:600;}
.lead{font-size:17px;color:var(--c-ink-2);line-height:1.85;}
.muted{color:var(--c-ink-3);font-size:14px;line-height:1.7;}

/* 面包屑 */
.breadcrumb{padding:26px 0 0;font-size:14px;color:var(--c-ink-3);display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.breadcrumb a{color:var(--c-ink-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-ink-3);}
.breadcrumb .now{color:var(--c-ink);font-weight:600;}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--c-line);
  background:#fff;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.5;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.9) 52%,rgba(255,255,255,.72) 100%);
}
.hero-inner{position:relative;padding:72px 0 80px;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px;align-items:center;}
.hero h1{margin-bottom:16px;}
.hero-sub{font-size:17px;font-weight:600;color:var(--c-primary-deep);margin-bottom:14px;}
.hero-desc{font-size:16px;color:var(--c-ink-2);line-height:1.9;max-width:56ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;letter-spacing:.02em;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:999px;padding:5px 13px;
}
.chip i{font-size:11px;}
.chip-neutral{background:var(--c-bg-2);color:var(--c-ink-2);border:1px solid var(--c-line);}
.hero-visual{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:22px;
}
.hero-visual figure{margin:0;border-radius:var(--radius-img);overflow:hidden;aspect-ratio:16/10;background:var(--c-primary-soft);}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px;}
.stat-item{border-left:1px solid var(--c-line);padding-left:12px;}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-num{font-size:26px;font-weight:700;color:var(--c-accent);line-height:1.2;}
.stat-label{font-size:12.5px;color:var(--c-ink-3);line-height:1.6;}

/* 左文右卡 */
.split{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:56px;align-items:start;}
.prose-block p{margin-top:16px;color:var(--c-ink-2);line-height:1.9;}
.prose-block h3{margin-top:36px;font-size:19px;font-weight:600;position:relative;padding-left:14px;}
.prose-block h3::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--c-primary);}
.check-list{margin-top:24px;display:grid;gap:12px;}
.check-item{
  display:flex;gap:12px;align-items:flex-start;
  border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:16px 18px;background:#fff;transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.check-item:hover{border-color:rgba(28,110,140,.35);transform:translateY(-2px);box-shadow:var(--shadow-1);}
.check-item i{color:var(--c-primary);margin-top:5px;font-size:14px;}
.check-item strong{display:block;font-size:15.5px;font-weight:600;margin-bottom:4px;}
.check-item span{font-size:14px;color:var(--c-ink-2);line-height:1.75;}

.sticky-card{
  position:sticky;top:32px;
  border:1px solid var(--c-line);border-radius:var(--radius-card);
  background:#fff;box-shadow:var(--shadow-1);overflow:hidden;
}
.sticky-card .card-top{padding:20px 22px;border-bottom:1px solid var(--c-line);background:var(--c-bg-2);}
.sticky-card .card-top h3{font-size:17px;font-weight:700;}
.sticky-card .card-top p{font-size:13px;color:var(--c-ink-3);margin-top:6px;}
.info-rows{padding:8px 22px;}
.info-row{display:flex;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px solid var(--c-line);font-size:14px;}
.info-row:last-child{border-bottom:0;}
.info-row dt{color:var(--c-ink-3);white-space:nowrap;}
.info-row dd{margin:0;color:var(--c-ink);font-weight:600;text-align:right;}
.card-actions{padding:18px 22px 22px;display:flex;flex-direction:column;gap:10px;}
.card-actions .muted{font-size:12.5px;text-align:center;}

/* 要点卡 */
.card-grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:26px;transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
  display:flex;flex-direction:column;gap:12px;
}
.card:hover{border-color:rgba(28,110,140,.35);transform:translateY(-2px);box-shadow:var(--shadow-1);}
.card-num{
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:999px;padding:4px 12px;align-self:flex-start;
}
.card h3{font-size:18px;font-weight:600;}
.card p{font-size:14.5px;color:var(--c-ink-2);line-height:1.85;}
.card ul{margin-top:4px;display:grid;gap:8px;}
.card ul li{font-size:14px;color:var(--c-ink-2);position:relative;padding-left:16px;}
.card ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--c-primary);opacity:.75;}

/* 流程阶梯 */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--c-line);}
.step{
  position:relative;padding:36px 24px 0;border-right:1px solid var(--c-line);
}
.step:last-child{border-right:0;}
.step:nth-child(2){transform:translateY(20px);}
.step:nth-child(4){transform:translateY(20px);}
.step .wm{
  font-size:44px;font-weight:700;line-height:1;color:var(--c-primary);opacity:.14;letter-spacing:-.02em;
}
.step h3{font-size:17px;font-weight:600;margin-top:10px;}
.step p{font-size:14px;color:var(--c-ink-2);line-height:1.8;margin-top:8px;}
.step::after{content:"";position:absolute;left:24px;right:24px;bottom:-24px;height:1px;background:transparent;}

/* FAQ */
.faq-wrap{max-width:800px;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;padding:20px 0 20px 0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);transition:color .2s ease-out;
  min-height:44px;
}
.faq-btn i{color:var(--c-ink-3);font-size:14px;transition:transform .22s ease-out,color .2s ease-out;}
.faq-item.open .faq-btn{color:var(--c-primary);}
.faq-item.open .faq-btn i{transform:rotate(180deg);color:var(--c-primary);}
.faq-panel{max-height:0;overflow:hidden;transition:max-height .24s ease-out;}
.faq-panel-inner{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--c-ink-2);border-left:3px solid transparent;padding-left:0;}
.faq-item.open .faq-panel-inner{border-left-color:var(--c-primary);padding-left:16px;}

/* CTA */
.cta-card{
  border:1px solid rgba(28,110,140,.26);border-left:4px solid var(--c-accent);
  border-radius:var(--radius-card);background:#fff;box-shadow:var(--shadow-1);
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:40px;
  padding:40px;align-items:center;
}
.field{margin-bottom:14px;}
.field label{display:block;font-size:13.5px;color:var(--c-ink-2);margin-bottom:6px;font-weight:600;}
.field input,.field select{
  width:100%;height:47px;border-radius:10px;border:1px solid var(--c-line);
  padding:0 14px;background:#fff;font-size:14.5px;transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.field input::placeholder{color:var(--c-ink-3);}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(28,110,140,.15);
}
.privacy-note{font-size:12.5px;color:var(--c-ink-3);margin-top:10px;line-height:1.7;}

/* 页脚 */
.site-footer{background:var(--c-bg-2);border-top:1px solid var(--c-line);margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding:64px 0 40px;}
.footer-brand h2{font-size:18px;font-weight:700;margin-bottom:12px;}
.footer-brand p{font-size:14px;color:var(--c-ink-2);line-height:1.85;max-width:42ch;}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:14px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{font-size:14px;color:var(--c-ink-2);}
.footer-col a{color:var(--c-ink-2);}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{border-top:1px solid var(--c-line);padding:22px 0;text-align:center;font-size:14px;color:var(--c-ink-3);}

/* ============ 响应式 ============ */
@media (max-width:1440px){
  .hero-inner{gap:44px;}
}
@media (max-width:1279px){
  :root{--sidebar-w:72px;}
  .sidebar{padding:22px 12px;align-items:center;}
  .side-menu{width:100%;}
  .side-link{justify-content:center;padding:12px 0;}
  .side-link .nav-label,.brand-sub,.side-status,.side-foot{display:none;}
  .brand-mark{justify-content:center;font-size:0;gap:0;}
  .brand-mark i{font-size:20px;}
  .split{grid-template-columns:1fr;gap:40px;}
  .sticky-card{position:static;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step:nth-child(2),.step:nth-child(4){transform:none;}
  .step{border-bottom:1px solid var(--c-line);padding-bottom:28px;}
  .step:nth-child(odd){border-right:1px solid var(--c-line);}
  .step:nth-child(even){border-right:0;}
  .cta-card{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:1023px){
  .sidebar{display:none;}
  .main{margin-left:0;}
  .topbar{display:flex;}
  .hero-inner{grid-template-columns:1fr;padding:52px 0 60px;}
  .section{padding:64px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px;}
}
@media (max-width:640px){
  .container-x{padding:0 18px;}
  .section{padding:52px 0;}
  .breadcrumb{padding-top:18px;}
  .hero-actions .btn{width:100%;}
  .card-grid-2{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .step{border-right:0 !important;padding:28px 0 0;}
  .hero-badges{gap:8px;}
  .cta-card{padding:26px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .stat-grid{grid-template-columns:1fr 1fr;}
  .stat-item:nth-child(3){border-left:0;padding-left:0;}
  .info-row{flex-direction:column;gap:2px;}
  .info-row dd{text-align:left;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
  .card:hover,.check-item:hover,.btn:hover{transform:none !important;}
}

/* roulang page: article */
:root{
  --c-primary:#1C6E8C;
  --c-primary-deep:#114E66;
  --c-primary-soft:#E7F1F5;
  --c-accent:#E4713A;
  --c-accent-soft:#FDECE3;
  --c-ink:#10262F;
  --c-ink-2:#48606B;
  --c-ink-3:#8AA3AD;
  --c-line:#DCE7EC;
  --c-bg:#FFFFFF;
  --c-bg-2:#F4F8FA;
  --c-ok:#2E9E7B;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(16,42,54,.06), 0 12px 28px -14px rgba(16,42,54,.14);
  --sh-2:0 2px 4px rgba(16,42,54,.08), 0 20px 40px -18px rgba(16,42,54,.22);
  --s-1:8px; --s-2:12px; --s-3:16px; --s-4:24px; --s-5:32px; --s-6:48px; --s-7:64px; --s-8:96px;
  --sidebar-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--c-primary);color:#fff;
  padding:10px 18px;border-radius:0 0 var(--r-btn) 0;z-index:200;
}
.skip-link:focus{left:0;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.shell{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
main{flex:1;}

/* ---------- 左侧导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:#fff;border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;gap:var(--s-5);
  padding:28px 20px;z-index:70;overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:12px;padding:6px 0 18px;border-bottom:1px solid var(--c-line);}
.brand-mark{
  width:42px;height:42px;flex:none;border-radius:12px;
  background:linear-gradient(160deg,var(--c-primary) 0%,var(--c-primary-deep) 100%);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;letter-spacing:.5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.35;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--c-ink);}
.brand-text span{font-size:12px;color:var(--c-ink-3);letter-spacing:.02em;}
.side-menu{display:flex;flex-direction:column;gap:6px;}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:46px;padding:11px 14px;border-radius:var(--r-btn);
  color:var(--c-ink-2);font-size:14.5px;font-weight:500;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.side-link i{width:20px;text-align:center;font-size:15px;color:var(--c-ink-3);transition:color .2s ease;}
.side-link:hover{background:var(--c-bg-2);color:var(--c-primary);transform:translateX(2px);}
.side-link:hover i{color:var(--c-primary);}
.side-link.active{
  background:var(--c-primary-soft);color:var(--c-primary);font-weight:700;
}
.side-link.active i{color:var(--c-primary);}
.side-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-primary);
}
.side-status{
  display:inline-flex;align-items:center;gap:8px;align-self:flex-start;
  background:var(--c-bg-2);border:1px solid var(--c-line);
  border-radius:999px;padding:5px 12px;font-size:12.5px;color:var(--c-ink-2);
}
.side-status .dot{width:7px;height:7px;border-radius:50%;background:var(--c-ok);}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px;}
.side-contact{
  background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:16px;font-size:13px;color:var(--c-ink-2);line-height:1.75;
}
.side-contact b{display:block;color:var(--c-ink);font-size:13.5px;margin-bottom:6px;}
.side-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;border-radius:var(--r-btn);
  background:var(--c-accent);color:#fff;font-size:14.5px;font-weight:600;
  box-shadow:var(--sh-1);transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.side-cta:hover{background:#d5642f;transform:translateY(-1px);box-shadow:var(--sh-2);}
.side-cta:active{transform:translateY(0);}

/* ---------- 顶部导航（<1024px） ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:80;
  align-items:center;justify-content:space-between;gap:16px;
  height:64px;padding:0 18px;background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-line);backdrop-filter:blur(8px);
}
.topbar .brand{padding:0;border:none;gap:10px;}
.topbar .brand-mark{width:36px;height:36px;border-radius:10px;font-size:15px;}
.topbar .brand-text strong{font-size:15px;}
.topbar .brand-text span{display:none;}
.hamburger{
  width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;color:var(--c-primary);display:flex;align-items:center;justify-content:center;
  font-size:17px;cursor:pointer;transition:background .2s ease,border-color .2s ease;
}
.hamburger:hover{background:var(--c-primary-soft);border-color:var(--c-primary);}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:340px;
  background:var(--c-primary-deep);color:#fff;z-index:120;
  transform:translateX(102%);transition:transform .24s ease-out;
  display:flex;flex-direction:column;padding:22px 22px 28px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-head strong{font-size:16px;}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.35);
  background:transparent;color:#fff;font-size:16px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{background:rgba(255,255,255,.14);}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-link{
  display:flex;align-items:center;gap:12px;min-height:48px;padding:12px 14px;
  border-radius:var(--r-btn);color:rgba(255,255,255,.9);font-size:15px;
  transition:background .2s ease;
}
.drawer-link:hover{background:rgba(255,255,255,.12);}
.drawer-link.active{background:rgba(255,255,255,.18);font-weight:700;color:#fff;}
.drawer-cta{
  margin-top:22px;display:flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;border-radius:var(--r-btn);background:var(--c-accent);color:#fff;
  font-weight:600;font-size:15px;
}
.overlay{
  position:fixed;inset:0;background:rgba(16,38,47,.5);z-index:110;
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.overlay.open{opacity:1;visibility:visible;}

/* ---------- 文章头部 ---------- */
.article-head{
  position:relative;
  background-image:linear-gradient(rgba(255,255,255,.93),rgba(255,255,255,.97)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
  padding:36px 0 46px;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-3);}
.crumb a{color:var(--c-ink-2);transition:color .2s ease;}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:var(--c-ink-3);}
.crumb .current{color:var(--c-ink-2);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-head-inner{margin-top:26px;max-width:900px;}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--c-primary-soft);color:var(--c-primary);
  border-radius:999px;padding:4px 12px;font-size:12.5px;letter-spacing:.02em;font-weight:600;
}
.article-h1{
  margin-top:16px;
  font-size:clamp(28px,4.2vw,44px);font-weight:700;line-height:1.25;color:var(--c-ink);
  letter-spacing:-.01em;
}
.article-meta{
  margin-top:18px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:14px;color:var(--c-ink-3);
}
.article-meta .dot-sep{color:var(--c-line);}
.article-meta .meta-tag{
  background:var(--c-bg-2);border:1px solid var(--c-line);color:var(--c-ink-2);
  border-radius:999px;padding:3px 10px;font-size:12.5px;
}
.title-rule{width:40px;height:3px;background:var(--c-primary);border-radius:2px;margin-top:22px;}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 260px;
  gap:56px;padding-top:56px;padding-bottom:72px;
}
.article-main{min-width:0;max-width:820px;}
.article-side{border-left:1px solid var(--c-line);padding-left:24px;}
.side-block{position:sticky;top:32px;}
.side-title{
  font-size:15px;font-weight:600;color:var(--c-ink);margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.side-title::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--c-primary);}
.toc-list{list-style:none;display:flex;flex-direction:column;gap:4px;}
.toc-list a{
  display:block;font-size:14px;color:var(--c-ink-2);padding:6px 10px;border-radius:8px;
  line-height:1.6;transition:background .2s ease,color .2s ease;
}
.toc-list a:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.toc-list a.lvl3{padding-left:22px;font-size:13.5px;color:var(--c-ink-3);}
.side-card{
  margin-top:26px;border:1px solid var(--c-line);border-radius:var(--r-card);
  background:var(--c-bg-2);padding:18px;
}
.side-card p{font-size:13.5px;color:var(--c-ink-2);line-height:1.75;}
.side-card .btn{margin-top:14px;width:100%;}

/* ---------- 正文排版 ---------- */
.article-cover{
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);
  margin-bottom:36px;aspect-ratio:16/9;background:var(--c-primary-soft);
}
.article-cover img{width:100%;height:100%;object-fit:cover;}
.article-body{font-size:16px;line-height:1.9;color:var(--c-ink-2);}
.article-body > * + *{margin-top:20px;}
.article-body h2{
  margin-top:40px;margin-bottom:16px;padding-left:14px;
  font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;color:var(--c-ink);
  position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;
  border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:19px;font-weight:600;line-height:1.5;color:var(--c-ink);margin-top:32px;}
.article-body h4{font-size:16.5px;font-weight:600;color:var(--c-ink);margin-top:24px;}
.article-body p{color:var(--c-ink-2);}
.article-body strong{color:var(--c-ink);font-weight:600;}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--c-primary-deep);}
.article-body ul,.article-body ol{list-style:none;display:flex;flex-direction:column;gap:10px;padding-left:2px;}
.article-body ul li{position:relative;padding-left:20px;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;
  border-radius:2px;background:var(--c-primary);opacity:.85;
}
.article-body ol{counter-reset:olc;}
.article-body ol li{position:relative;padding-left:30px;counter-increment:olc;}
.article-body ol li::before{
  content:counter(olc);position:absolute;left:0;top:.15em;
  width:20px;height:20px;border-radius:6px;background:var(--c-primary-soft);
  color:var(--c-primary);font-size:12.5px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.article-body blockquote{
  background:var(--c-bg-2);border-left:4px solid var(--c-primary);
  border-radius:0 var(--r-btn) var(--r-btn) 0;padding:18px 22px;color:var(--c-ink-2);
}
.article-body blockquote p{color:var(--c-ink-2);}
.article-body figure{margin:28px 0;}
.article-body img{border-radius:var(--r-img);border:1px solid var(--c-line);width:100%;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--c-ink-3);margin-top:10px;}
.article-body table{
  width:100%;border-collapse:collapse;font-size:14.5px;display:block;overflow-x:auto;
  border:1px solid var(--c-line);border-radius:var(--r-btn);
}
.article-body thead{background:var(--c-bg-2);}
.article-body th{
  color:var(--c-primary);font-weight:600;text-align:left;
  padding:12px 16px;border-bottom:1px solid var(--c-line);white-space:nowrap;
}
.article-body td{padding:12px 16px;border-bottom:1px solid var(--c-line);color:var(--c-ink-2);}
.article-body tbody tr:last-child td{border-bottom:none;}
.article-body code{
  background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:6px;
  padding:2px 6px;font-size:14px;color:var(--c-primary-deep);
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body pre{
  background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:var(--r-btn);
  padding:18px;overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body pre code{background:none;border:none;padding:0;}
.article-body hr{border:none;border-top:1px solid var(--c-line);margin:36px 0;}

/* ---------- 空状态 ---------- */
.empty-state{
  border:1px dashed var(--c-line);border-radius:var(--r-card);background:var(--c-bg-2);
  padding:56px 28px;text-align:center;
}
.empty-state .icon{
  width:52px;height:52px;margin:0 auto 18px;border-radius:14px;
  background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:20px;
}
.empty-state .empty-title{font-size:19px;font-weight:700;color:var(--c-ink);}
.empty-state .empty-desc{font-size:14.5px;color:var(--c-ink-3);margin:10px auto 22px;max-width:460px;line-height:1.8;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);transform:translateY(-1px);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:#d5642f;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);
  font-size:14.5px;font-weight:600;background:none;border:none;padding:0;cursor:pointer;
}
.btn-text i{transition:transform .2s ease;}
.btn-text:hover i{transform:translateX(3px);}

/* ---------- 文末 ---------- */
.article-foot{margin-top:44px;padding-top:26px;border-top:1px solid var(--c-line);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.tag-row .tag-label{font-size:13.5px;color:var(--c-ink-3);margin-right:4px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink-2);
  border-radius:999px;padding:5px 13px;font-size:12.5px;transition:all .2s ease;
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft);}

.related{margin-top:72px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;}
.section-head h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;color:var(--c-ink);line-height:1.4;}
.section-head p{font-size:14px;color:var(--c-ink-3);margin-top:6px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.related-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(28,110,140,.35);}
.related-card .thumb{aspect-ratio:3/2;background:var(--c-primary-soft);overflow:hidden;}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.related-card:hover .thumb img{transform:scale(1.03);}
.related-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.related-card h3{font-size:15.5px;font-weight:600;color:var(--c-ink);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease;}
.related-card:hover h3{color:var(--c-primary);}
.related-card .time{font-size:13px;color:var(--c-ink-3);margin-top:auto;}

.back-bar{
  margin-top:56px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;
  padding:22px 24px;border:1px solid var(--c-line);border-radius:var(--r-card);background:var(--c-bg-2);
}
.back-bar .back-text{font-size:14.5px;color:var(--c-ink-2);margin-right:auto;}

/* ---------- CTA ---------- */
.cta-section{padding:0 0 88px;}
.cta-card{
  position:relative;border:1px solid rgba(28,110,140,.28);border-radius:var(--r-card);
  background:#fff;padding:40px 40px 40px 44px;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,380px);gap:44px;align-items:center;
  box-shadow:var(--sh-1);overflow:hidden;
}
.cta-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--c-accent);}
.cta-card h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;color:var(--c-ink);line-height:1.4;}
.cta-card .cta-desc{margin-top:12px;font-size:15px;color:var(--c-ink-2);line-height:1.85;max-width:520px;}
.cta-points{margin-top:18px;display:flex;flex-direction:column;gap:8px;}
.cta-points li{list-style:none;display:flex;align-items:flex-start;gap:9px;font-size:14.5px;color:var(--c-ink-2);}
.cta-points i{color:var(--c-ok);margin-top:6px;font-size:13px;}
.form-field{display:flex;flex-direction:column;gap:8px;margin-bottom:14px;}
.form-field label{font-size:13.5px;color:var(--c-ink-2);font-weight:500;}
.form-field input,.form-field select{
  height:48px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  padding:0 14px;font-size:14.5px;color:var(--c-ink);background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;width:100%;
}
.form-field input::placeholder{color:var(--c-ink-3);}
.form-field input:focus,.form-field select:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(28,110,140,.15);
}
.form-privacy{font-size:12.5px;color:var(--c-ink-3);margin-top:12px;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--c-line);background:var(--c-bg-2);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px;}
.footer-brand h2{font-size:18px;font-weight:700;color:var(--c-ink);margin-bottom:12px;}
.footer-brand p{font-size:14px;color:var(--c-ink-2);line-height:1.85;max-width:340px;}
.footer-col h3{font-size:15px;font-weight:600;color:var(--c-ink);margin-bottom:14px;}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:var(--c-ink-2);line-height:1.7;}
.footer-col a{color:var(--c-ink-2);transition:color .2s ease;}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:20px 0;text-align:center;
  font-size:14px;color:var(--c-ink-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-side{border-left:none;padding-left:0;margin-top:48px;}
  .side-block{position:static;}
  .related-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
}
@media (max-width:1279px) and (min-width:1024px){
  :root{--sidebar-w:72px;}
  .sidebar{padding:24px 12px;align-items:center;}
  .sidebar .nav-label,.sidebar .brand-text,.side-contact,.side-status{display:none;}
  .sidebar .side-link{justify-content:center;padding:12px 0;}
  .sidebar .brand{justify-content:center;padding-bottom:18px;width:100%;}
  .side-cta{padding:0;width:46px;height:46px;}
  .side-cta span{display:none;}
}
@media (max-width:1023px){
  .sidebar{display:none;}
  .shell{margin-left:0;}
  .topbar{display:flex;}
  .article-head{padding:24px 0 34px;}
  .article-layout{padding-top:40px;padding-bottom:56px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-card{grid-template-columns:minmax(0,1fr);gap:28px;padding:32px 28px 32px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:639px){
  .container-x{padding:0 18px;}
  .article-layout{padding-top:32px;padding-bottom:48px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .related-card{flex-direction:row;align-items:stretch;}
  .related-card .thumb{width:116px;aspect-ratio:auto;flex:none;}
  .related-card .body{padding:14px 16px;gap:8px;}
  .back-bar{flex-direction:column;align-items:stretch;}
  .back-bar .back-text{margin:0 0 4px;}
  .back-bar .btn{width:100%;}
  .cta-section{padding-bottom:56px;}
  .cta-card{padding:26px 20px 26px 24px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .article-meta{font-size:13px;}
  .article-body{font-size:15.5px;}
  .form-field input,.form-field select{height:48px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  .related-card:hover,.btn:hover{transform:none !important;}
}

/* roulang page: category2 */
:root{
  --c-primary:#1C6E8C;
  --c-primary-deep:#114E66;
  --c-primary-soft:#E7F1F5;
  --c-accent:#E4713A;
  --c-accent-soft:#FDECE3;
  --c-ink:#10262F;
  --c-ink-2:#48606B;
  --c-ink-3:#8AA3AD;
  --c-line:#DCE7EC;
  --c-bg:#FFFFFF;
  --c-bg-2:#F4F8FA;
  --c-ok:#2E9E7B;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(16,42,54,.06), 0 12px 28px -14px rgba(16,42,54,.14);
  --shadow-2:0 2px 5px rgba(16,42,54,.08), 0 20px 40px -18px rgba(16,42,54,.22);
  --side-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
  border-radius:6px;
}
.container-x{max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:var(--c-bg-2);}
.section-line{border-top:1px solid var(--c-line);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.06em;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:999px;padding:5px 14px;font-weight:600;
}
.h1{font-size:clamp(28px,4.2vw,44px);font-weight:700;line-height:1.25;letter-spacing:-.01em;}
.h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;}
.h3{font-size:19px;font-weight:600;line-height:1.5;}
.lead{font-size:17px;color:var(--c-ink-2);line-height:1.9;}
.muted{color:var(--c-ink-2);}
.faint{color:var(--c-ink-3);}
.small{font-size:14px;line-height:1.7;}
.divider{height:1px;background:var(--c-line);border:0;margin:0;}
.rule{width:40px;height:3px;background:var(--c-primary);border-radius:2px;}

/* ============ 左侧竖向导航 ============ */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:#fff;border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;gap:24px;
  padding:26px 18px 24px;z-index:70;overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:12px;padding:6px 8px 18px;border-bottom:1px solid var(--c-line);}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;min-width:0;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.brand-text em{font-style:normal;font-size:12px;color:var(--c-ink-3);letter-spacing:.04em;white-space:nowrap;}
.side-menu{display:flex;flex-direction:column;gap:6px;}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:46px;padding:10px 12px;border-radius:10px;
  font-size:14.5px;color:var(--c-ink-2);
  transition:background .2s ease-out,color .2s ease-out;
}
.side-link i{width:20px;text-align:center;font-size:15px;color:var(--c-ink-3);transition:color .2s ease-out;}
.side-link:hover{background:var(--c-bg-2);color:var(--c-primary);}
.side-link:hover i{color:var(--c-primary);}
.side-link.active{background:var(--c-primary-soft);color:var(--c-primary-deep);font-weight:700;}
.side-link.active i{color:var(--c-primary);}
.side-link.active::before{
  content:"";position:absolute;left:-18px;top:9px;bottom:9px;width:3px;
  background:var(--c-primary);border-radius:0 3px 3px 0;
}
.side-foot{margin-top:auto;border-top:1px solid var(--c-line);padding-top:20px;display:flex;flex-direction:column;gap:8px;}
.side-foot-title{font-size:15px;font-weight:600;}
.side-foot p{font-size:13.5px;color:var(--c-ink-3);}
.hamburger{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-ink);font-size:18px;cursor:pointer;
}
.main-shell{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .2s ease-out,color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:var(--shadow-1);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:#d2612d;transform:translateY(-1px);box-shadow:var(--shadow-1);}
.btn-accent:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);}
.btn-block{width:100%;}
.btn-sm{min-height:42px;padding:0 16px;font-size:14px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);font-weight:600;font-size:14.5px;
}
.btn-link i{transition:transform .2s ease-out;}
.btn-link:hover i{transform:translateX(3px);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--c-primary-soft);color:var(--c-primary);
  border-radius:999px;padding:4px 12px;font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.badge-accent{background:var(--c-accent-soft);color:#B4531F;}
.badge-time{background:#EEF3F5;color:var(--c-ink-3);}

/* ============ Hero ============ */
.hero{
  position:relative;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.95),rgba(255,255,255,.87));
}
.hero-inner{position:relative;z-index:1;padding:56px 0 72px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-3);margin-bottom:26px;}
.crumbs a{color:var(--c-ink-2);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs span.sep{color:var(--c-ink-3);}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
.hero-copy h1{margin:18px 0 16px;}
.hero-sub{font-size:17px;color:var(--c-primary-deep);font-weight:600;margin-bottom:14px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-metrics{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.metric-chip{
  background:#fff;border:1px solid var(--c-line);border-radius:999px;
  padding:8px 16px;font-size:13.5px;color:var(--c-ink-2);
}
.metric-chip b{color:var(--c-primary-deep);font-weight:700;}
.hero-panel{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:26px;
}
.hero-panel h2{font-size:16px;font-weight:700;margin-bottom:16px;}
.step-mini{display:flex;gap:14px;padding:12px 0;border-bottom:1px solid var(--c-line);}
.step-mini:last-child{border-bottom:0;padding-bottom:0;}
.step-mini .num{
  flex:0 0 30px;width:30px;height:30px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
}
.step-mini p{font-size:14px;color:var(--c-ink-2);line-height:1.6;}
.step-mini strong{display:block;font-size:15px;color:var(--c-ink);margin-bottom:2px;}

/* ============ 时间轴 ============ */
.timeline{position:relative;max-width:1040px;margin:0 auto;padding-top:8px;}
.timeline::before{
  content:"";position:absolute;left:50%;top:0;bottom:0;width:1px;
  background:var(--c-line);transform:translateX(-50%);
}
.tl-item{position:relative;width:50%;padding:0 56px 56px 0;}
.tl-item:nth-child(even){margin-left:50%;padding:0 0 56px 56px;}
.tl-dot{
  position:absolute;top:8px;width:42px;height:42px;border-radius:50%;
  background:#fff;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:var(--c-primary);
  box-shadow:var(--shadow-1);
}
.tl-item:nth-child(odd) .tl-dot{right:-21px;}
.tl-item:nth-child(even) .tl-dot{left:-21px;}
.tl-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px;transition:border-color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out;
}
.tl-card:hover{border-color:rgba(28,110,140,.35);box-shadow:var(--shadow-1);transform:translateY(-2px);}
.tl-card h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.tl-card p{font-size:15px;color:var(--c-ink-2);line-height:1.85;}
.tl-tag{margin-bottom:12px;}
.tl-media{margin-top:16px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);}
.tl-media img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--c-primary-soft);}
.tl-note{
  margin-top:14px;font-size:13.5px;color:var(--c-ink-3);
  border-left:3px solid var(--c-primary);padding-left:12px;
}

/* ============ 对照清单 ============ */
.split{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:start;}
.check-list li{
  display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--c-line);
}
.check-list li:last-child{border-bottom:0;}
.check-list .idx{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.check-list strong{display:block;font-size:16.5px;font-weight:600;margin-bottom:4px;}
.check-list p{font-size:14.5px;color:var(--c-ink-2);line-height:1.8;}
.sticky-card{
  position:sticky;top:32px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow-1);
}
.sticky-card h3{font-size:17px;font-weight:700;margin-bottom:16px;}
.info-row{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px dashed var(--c-line);font-size:14px;}
.info-row:last-of-type{border-bottom:0;}
.info-row span:first-child{color:var(--c-ink-3);}
.info-row span:last-child{color:var(--c-ink);font-weight:600;}

/* ============ FAQ ============ */
.faq-wrap{max-width:800px;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:20px 16px;font-size:16px;font-weight:600;
  transition:color .2s ease-out,background .2s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);background:var(--c-bg-2);}
.faq-item summary .chev{transition:transform .2s ease-out;color:var(--c-ink-3);font-size:14px;}
.faq-item[open] summary{color:var(--c-primary);border-left:3px solid var(--c-primary);}
.faq-item[open] summary .chev{transform:rotate(180deg);color:var(--c-primary);}
.faq-body{padding:0 20px 22px 19px;font-size:15px;line-height:1.85;color:var(--c-ink-2);}

/* ============ CTA 卡 ============ */
.cta-card{
  background:#fff;border:1px solid rgba(28,110,140,.25);border-radius:var(--r-card);
  border-left:4px solid var(--c-accent);
  padding:40px;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start;
  box-shadow:var(--shadow-1);
}
.form-grid{display:grid;gap:16px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
.field input,.field textarea{
  width:100%;min-height:48px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  padding:12px 14px;background:#fff;transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--c-ink-3);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(28,110,140,.15);
}
.privacy-note{font-size:13px;color:var(--c-ink-3);line-height:1.7;}

/* ============ 返回栏 ============ */
.back-bar{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.return-strip{
  display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;
  background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px 28px;
}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-bg-2);border-top:1px solid var(--c-line);padding:64px 0 0;margin-top:auto;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-brand h2{font-size:19px;font-weight:700;margin-bottom:12px;}
.footer-brand p{font-size:14px;color:var(--c-ink-2);line-height:1.85;max-width:340px;}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li,.footer-col a{font-size:14px;color:var(--c-ink-2);line-height:1.7;}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:22px 0;text-align:center;
  font-size:14px;color:var(--c-ink-3);
}

/* ============ 抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,38,47,.45);z-index:90;
  opacity:0;transition:opacity .22s ease-out;
}
.drawer-mask.show{opacity:1;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:100;
  background:var(--c-primary-deep);color:#fff;
  transform:translateX(100%);transition:transform .22s ease-out;
  display:flex;flex-direction:column;gap:20px;padding:22px;
}
.drawer.show{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.18);padding-bottom:16px;}
.drawer-head strong{font-size:17px;}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.3);
  background:transparent;color:#fff;font-size:18px;cursor:pointer;
}
.drawer-menu{display:flex;flex-direction:column;gap:8px;}
.drawer-menu a{
  display:flex;align-items:center;gap:12px;min-height:48px;padding:10px 12px;border-radius:10px;
  font-size:15px;color:rgba(255,255,255,.88);
}
.drawer-menu a i{width:20px;text-align:center;}
.drawer-menu a:hover{background:rgba(255,255,255,.12);color:#fff;}
.drawer-menu a.active{background:rgba(255,255,255,.18);color:#fff;font-weight:700;}
.drawer .btn-accent{margin-top:auto;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .side-nav{width:72px;padding:22px 12px;gap:18px;}
  .brand{justify-content:center;padding:6px 0 16px;}
  .brand-text{display:none;}
  .side-foot{display:none;}
  .main-shell{margin-left:72px;}
  .side-link{justify-content:center;padding:10px 0;}
  .side-link.active::before{left:-12px;}
  .side-link .nav-label{
    position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);
    background:var(--c-ink);color:#fff;font-size:13px;white-space:nowrap;
    padding:6px 10px;border-radius:8px;opacity:0;pointer-events:none;transition:opacity .18s ease-out;
  }
  .side-link:hover .nav-label{opacity:1;}
}
@media (max-width:1100px){
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .sticky-card{position:static;}
  .cta-card{grid-template-columns:1fr;gap:32px;padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:1023px){
  .side-nav{
    width:100%;height:64px;padding:0 18px;flex-direction:row;align-items:center;
    justify-content:space-between;gap:12px;border-right:0;border-bottom:1px solid var(--c-line);
    overflow:visible;
  }
  .brand{padding:0;border-bottom:0;}
  .side-menu{display:none;}
  .hamburger{display:inline-flex;}
  .main-shell{margin-left:0;padding-top:64px;}
  .timeline::before{left:20px;transform:none;}
  .tl-item,.tl-item:nth-child(even){
    width:100%;margin-left:0;padding:0 0 40px 56px;
  }
  .tl-item:nth-child(odd) .tl-dot,.tl-item:nth-child(even) .tl-dot{left:-1px;right:auto;top:4px;width:38px;height:38px;}
}
@media (max-width:767px){
  .container-x{padding:0 20px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .hero-inner{padding:36px 0 52px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .cta-card{padding:26px 20px;}
  .return-strip{padding:20px;}
  .return-strip .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .tl-card{padding:20px;}
  .info-row{font-size:13.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .btn:hover,.tl-card:hover{transform:none;}
}

/* roulang page: category3 */
:root{
  --c-primary:#1C6E8C;
  --c-primary-deep:#114E66;
  --c-primary-soft:#E7F1F5;
  --c-accent:#E4713A;
  --c-accent-soft:#FDECE3;
  --c-ink:#10262F;
  --c-ink-2:#48606B;
  --c-ink-3:#8AA3AD;
  --c-line:#DCE7EC;
  --c-bg:#FFFFFF;
  --c-bg-2:#F4F8FA;
  --c-ok:#2E9E7B;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(16,42,54,.06), 0 12px 28px -14px rgba(16,42,54,.14);
  --sh-2:0 2px 4px rgba(16,42,54,.08), 0 20px 38px -16px rgba(16,42,54,.22);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","system-ui",-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.28;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (max-width:639px){.container-x{padding:0 16px;}}

/* ============ 布局骨架 ============ */
.site-header{position:relative;z-index:60;}
.page-shell{min-height:100vh;}
@media (min-width:1024px){
  .page-shell{margin-left:248px;}
}
@media (min-width:1024px) and (max-width:1279px){
  .page-shell{margin-left:72px;}
}

/* ============ 左侧竖向导航 ============ */
.side-nav{display:none;}
@media (min-width:1024px){
  .side-nav{
    display:flex;
    flex-direction:column;
    position:fixed;
    top:0;left:0;bottom:0;
    width:248px;
    padding:26px 16px 22px;
    background:var(--c-bg);
    border-right:1px solid var(--c-line);
    overflow-y:auto;
    z-index:70;
  }
}
.side-brand{display:flex;align-items:center;gap:12px;padding:0 6px 20px;border-bottom:1px solid var(--c-line);}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:12px;
  background:linear-gradient(150deg,var(--c-primary) 0%,var(--c-primary-deep) 100%);
  color:#fff;font-family:var(--font-num);font-weight:700;font-size:17px;
  display:flex;align-items:center;justify-content:center;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;}
.brand-name{font-size:16px;font-weight:700;letter-spacing:.01em;}
.brand-sub{font-size:12px;color:var(--c-ink-3);letter-spacing:.04em;}
.side-menu{display:flex;flex-direction:column;gap:4px;margin-top:18px;}
.side-link{
  display:flex;align-items:center;gap:12px;
  min-height:44px;padding:10px 12px;
  border-radius:10px;color:var(--c-ink-2);
  font-size:14.5px;position:relative;
  border-left:3px solid transparent;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.side-link i{width:18px;text-align:center;font-size:15px;color:var(--c-ink-3);transition:color .2s ease-out;}
.side-link:hover{background:var(--c-bg-2);color:var(--c-primary);}
.side-link:hover i{color:var(--c-primary);}
.side-link.active{background:var(--c-primary-soft);color:var(--c-primary-deep);font-weight:600;border-left-color:var(--c-primary);}
.side-link.active i{color:var(--c-primary);}
.nav-state{
  margin-top:20px;padding:14px;border:1px solid var(--c-line);border-radius:var(--r-card);
  background:var(--c-bg-2);
}
.nav-state .state-title{font-size:13px;font-weight:600;color:var(--c-ink);display:flex;align-items:center;gap:8px;}
.nav-state .state-title i{color:var(--c-ok);font-size:13px;}
.nav-state p{font-size:12.5px;line-height:1.7;color:var(--c-ink-2);margin-top:6px;}
.nav-cta{margin-top:18px;}
.nav-cta .btn{width:100%;justify-content:center;}
.nav-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--c-line);}
.nav-foot .foot-line{font-size:12.5px;color:var(--c-ink-2);line-height:1.9;display:flex;align-items:center;gap:8px;}
.nav-foot .foot-line i{color:var(--c-ink-3);font-size:12px;width:14px;text-align:center;}
@media (min-width:1024px) and (max-width:1279px){
  .side-nav{width:72px;padding:20px 8px;align-items:center;}
  .side-brand{padding:0 0 16px;justify-content:center;border-bottom:1px solid var(--c-line);width:100%;}
  .brand-text{display:none;}
  .side-menu{width:100%;margin-top:14px;}
  .side-link{justify-content:center;padding:10px 0;border-left-width:3px;}
  .side-link .nav-label{display:none;}
  .nav-state,.nav-cta .cta-text,.nav-foot{display:none;}
}

/* ============ 移动端顶栏与抽屉 ============ */
.mobile-top{
  position:sticky;top:0;z-index:80;
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;padding:10px 16px;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-line);
  backdrop-filter:blur(8px);
}
@media (min-width:1024px){.mobile-top{display:none;}}
.mobile-brand{display:flex;align-items:center;gap:10px;}
.mobile-brand .brand-mark{width:36px;height:36px;flex:0 0 36px;font-size:15px;border-radius:10px;}
.mobile-brand .brand-name{font-size:15px;}
.mobile-brand .brand-sub{font-size:11px;}
.burger{
  width:44px;height:44px;border:1px solid var(--c-line);border-radius:10px;
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);font-size:17px;
  transition:background .2s ease-out,border-color .2s ease-out;
}
.burger:hover{background:var(--c-primary-soft);border-color:rgba(28,110,140,.35);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,38,47,.45);
  opacity:0;visibility:hidden;transition:opacity .22s ease-out,visibility .22s ease-out;z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:340px;
  background:linear-gradient(165deg,var(--c-primary) 0%,var(--c-primary-deep) 100%);
  color:#fff;padding:22px 20px 28px;z-index:95;
  transform:translateX(103%);transition:transform .24s ease-out;
  display:flex;flex-direction:column;gap:6px;overflow-y:auto;
}
.drawer.is-open{transform:none;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.22);margin-bottom:12px;}
.drawer-head .drawer-title{font-size:16px;font-weight:700;color:#fff;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.3);color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;}
.drawer-close:hover{background:rgba(255,255,255,.14);}
.drawer-link{
  display:flex;align-items:center;gap:12px;min-height:46px;padding:11px 12px;border-radius:10px;
  color:rgba(255,255,255,.9);font-size:15px;border-left:3px solid transparent;
  transition:background .2s ease-out;
}
.drawer-link i{width:18px;text-align:center;color:rgba(255,255,255,.72);font-size:14px;}
.drawer-link:hover,.drawer-link.active{background:rgba(255,255,255,.14);color:#fff;border-left-color:#fff;font-weight:600;}
.drawer-link.active i,.drawer-link:hover i{color:#fff;}
.drawer-cta{margin-top:16px;}
.drawer-cta .btn{width:100%;justify-content:center;background:#fff;color:var(--c-primary-deep);border-color:#fff;}
.drawer-cta .btn:hover{background:var(--c-accent-soft);border-color:var(--c-accent-soft);color:var(--c-primary-deep);}
.drawer-note{margin-top:auto;padding-top:16px;border-top:1px solid rgba(255,255,255,.22);font-size:12.5px;line-height:1.8;color:rgba(255,255,255,.78);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:11px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
  cursor:pointer;
}
.btn-primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
.btn-primary:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-primary:active{transform:none;box-shadow:none;}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);transform:translateY(-1px);}
.btn-ghost:active{transform:none;}
.btn-accent{background:var(--c-accent);color:#fff;border-color:var(--c-accent);}
.btn-accent:hover{background:#cf6330;border-color:#cf6330;transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-accent:active{transform:none;box-shadow:none;}
.btn-sm{min-height:40px;padding:8px 16px;font-size:14px;}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:14.5px;font-weight:600;}
.link-more i{font-size:12px;transition:transform .2s ease-out;}
.link-more:hover i{transform:translateX(3px);}

/* ============ 通用块 ============ */
.sec{padding:92px 0;}
.sec-alt{background:var(--c-bg-2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
@media (max-width:1023px){.sec{padding:64px 0;}}
@media (max-width:639px){.sec{padding:52px 0;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.06em;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:999px;padding:5px 13px;font-weight:600;
}
.sec-title{font-size:clamp(22px,2.6vw,30px);letter-spacing:.01em;}
.sec-lead{margin-top:12px;font-size:16px;line-height:1.85;color:var(--c-ink-2);max-width:760px;}
.sec-head{margin-bottom:40px;}
@media (max-width:639px){.sec-head{margin-bottom:26px;}}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;letter-spacing:.02em;border-radius:999px;padding:4px 12px;
  background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;
}
.tag-neutral{background:#EEF3F5;color:var(--c-ink-2);}
.divider{height:1px;background:var(--c-line);border:0;margin:0;}

/* ============ Hero ============ */
.hero{
  position:relative;
  background-image:linear-gradient(rgba(255,255,255,.93),rgba(255,255,255,.95)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--c-line);
}
.hero-inner{padding:56px 0 64px;}
@media (max-width:639px){.hero-inner{padding:34px 0 44px;}}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-3);margin-bottom:22px;}
.crumb a{color:var(--c-ink-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:var(--c-ink-3);}
.crumb .current{color:var(--c-ink);font-weight:600;}
.hero-grid{display:grid;gap:40px;align-items:center;}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.08fr .92fr;gap:56px;}}
.hero-title{font-size:clamp(28px,4.2vw,44px);line-height:1.25;letter-spacing:.01em;color:var(--c-ink);}
.hero-title .hl{color:var(--c-primary);}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.8;color:var(--c-ink-2);max-width:36em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
@media (max-width:639px){
  .hero-actions{flex-direction:column;gap:10px;}
  .hero-actions .btn{width:100%;}
}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.badge-row .badge{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--c-line);background:#fff;border-radius:999px;
  padding:7px 14px;font-size:13px;color:var(--c-ink-2);
}
.badge-row .badge i{color:var(--c-primary);font-size:12px;}
.hero-figure{
  border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;background:#fff;box-shadow:var(--sh-1);
}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-figure figcaption{padding:14px 18px;font-size:13px;color:var(--c-ink-2);border-top:1px solid var(--c-line);background:var(--c-bg-2);}

/* ============ 对照卡 ============ */
.compare-grid{display:grid;gap:24px;}
@media (min-width:900px){.compare-grid{grid-template-columns:1fr 1fr;gap:28px;}}
.cmp-card{
  border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px;
  background:#fff;transition:box-shadow .2s ease-out,transform .2s ease-out;
}
.cmp-card:hover{box-shadow:var(--sh-1);transform:translateY(-2px);}
.cmp-card.is-primary{background:var(--c-primary-soft);border-color:rgba(28,110,140,.24);}
.cmp-card.is-plain{background:var(--c-bg-2);}
.cmp-head{display:flex;align-items:center;gap:12px;padding-bottom:16px;border-bottom:1px solid rgba(16,42,54,.08);}
.cmp-head .idx{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-weight:700;font-size:14px;
  background:var(--c-primary);color:#fff;
}
.cmp-card.is-plain .cmp-head .idx{background:#DCE7EC;color:var(--c-ink-2);}
.cmp-head h3{font-size:19px;font-weight:600;}
.cmp-list{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
.cmp-list li{display:flex;gap:10px;font-size:15px;line-height:1.8;color:var(--c-ink-2);}
.cmp-list li i{margin-top:7px;font-size:12px;color:var(--c-primary);flex:0 0 auto;}
.cmp-card.is-plain .cmp-list li i{color:var(--c-ink-3);}
.cmp-foot{margin-top:20px;padding-top:16px;border-top:1px solid rgba(16,42,54,.08);font-size:13.5px;color:var(--c-ink-3);}

/* ============ 图文错位 ============ */
.alt-row{display:grid;gap:32px;align-items:center;}
@media (min-width:900px){
  .alt-row{grid-template-columns:1fr 1fr;gap:56px;}
  .alt-row.reverse .alt-media{order:2;}
  .alt-row.reverse .alt-copy{order:1;}
}
.alt-media{border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;background:#fff;box-shadow:var(--sh-1);}
.alt-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.alt-copy h3{font-size:22px;font-weight:700;letter-spacing:.01em;}
.alt-copy .alt-lead{margin-top:12px;font-size:15.5px;line-height:1.85;color:var(--c-ink-2);}
.step-list{margin-top:22px;display:flex;flex-direction:column;gap:16px;}
.step-list li{display:flex;gap:14px;border-top:1px solid var(--c-line);padding-top:16px;}
.step-list li:first-child{border-top:0;padding-top:0;}
.step-num{
  font-family:var(--font-num);font-size:20px;font-weight:700;color:var(--c-primary);
  flex:0 0 40px;line-height:1.2;padding-top:2px;
}
.step-body h4{font-size:16.5px;font-weight:600;}
.step-body p{margin-top:5px;font-size:14.5px;line-height:1.8;color:var(--c-ink-2);}

/* ============ 数据条 ============ */
.stat-strip{
  display:grid;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;background:#fff;
}
@media (min-width:900px){.stat-strip{grid-template-columns:repeat(5,1fr);}}
@media (min-width:600px) and (max-width:899px){.stat-strip{grid-template-columns:repeat(3,1fr);}}
.stat-cell{padding:22px 20px;border-right:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
@media (min-width:900px){.stat-cell{border-bottom:0;}.stat-cell:last-child{border-right:0;}}
.stat-num{font-family:var(--font-num);font-size:24px;font-weight:700;color:var(--c-primary);letter-spacing:.01em;}
.stat-num.accent{color:var(--c-accent);}
.stat-label{margin-top:6px;font-size:13.5px;line-height:1.7;color:var(--c-ink-2);}

/* ============ FAQ ============ */
.faq-list{max-width:800px;border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:58px;padding:16px 14px 16px 0;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);
  border-left:3px solid transparent;transition:color .2s ease-out,border-color .2s ease-out,background .2s ease-out;
}
.faq-q:hover{color:var(--c-primary);}
.faq-item.is-open .faq-q{border-left-color:var(--c-primary);color:var(--c-primary);padding-left:14px;background:var(--c-primary-soft);}
.faq-icon{font-size:13px;color:var(--c-ink-3);transition:transform .22s ease-out,color .2s ease-out;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);color:var(--c-primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out;}
.faq-item.is-open .faq-a{max-height:460px;}
.faq-a-inner{padding:0 14px 20px 17px;font-size:15px;line-height:1.85;color:var(--c-ink-2);}

/* ============ CTA ============ */
.cta-card{
  border:1px solid rgba(28,110,140,.25);border-left:4px solid var(--c-accent);
  border-radius:var(--r-card);background:#fff;padding:36px;
  display:grid;gap:26px;align-items:center;
}
@media (min-width:900px){.cta-card{grid-template-columns:1.25fr .75fr;padding:42px 44px;}}
@media (max-width:639px){.cta-card{padding:26px 20px;}}
.cta-card h2{font-size:clamp(21px,2.4vw,26px);}
.cta-card p{margin-top:12px;font-size:15.5px;line-height:1.85;color:var(--c-ink-2);}
.cta-actions{display:flex;flex-direction:column;gap:12px;}
@media (min-width:900px){.cta-actions{justify-self:end;min-width:210px;}}
.cta-actions .btn{width:100%;}
.back-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
.back-links .btn{min-height:42px;padding:9px 18px;font-size:14px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-bg-2);border-top:1px solid var(--c-line);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;gap:34px;padding-bottom:44px;}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}}
@media (min-width:640px) and (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;}}
.footer-brand h2{font-size:19px;color:var(--c-ink);}
.footer-brand p{margin-top:12px;font-size:14px;line-height:1.85;color:var(--c-ink-2);max-width:34em;}
.footer-col h3{font-size:15px;font-weight:600;color:var(--c-ink);margin-bottom:14px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:var(--c-ink-2);}
.footer-col a{color:var(--c-ink-2);transition:color .2s ease-out;}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:18px 0;text-align:center;
  font-size:14px;color:var(--c-ink-3);
}

@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important;}
  .btn:hover,.cmp-card:hover{transform:none !important;}
}