/* roulang page: index */
:root{
  --c-primary:#1F5FA9;
  --c-primary-d:#0E3E77;
  --c-primary-l:#3E86D6;
  --c-primary-50:#EDF4FC;
  --c-accent:#12A08A;
  --c-warm:#E9A33C;
  --c-bg:#F6F8FB;
  --c-bg-alt:#EEF3F9;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F2;
  --c-line-strong:#D2DBE7;
  --t1:#101C2B;
  --t2:#4C5C70;
  --t3:#7A8899;
  --r-card:16px;
  --r-sm:10px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,28,43,.05),0 6px 18px rgba(31,95,169,.06);
  --sh-2:0 10px 26px rgba(31,95,169,.13);
  --sh-3:0 18px 48px rgba(16,28,43,.14);
  --sidebar-w:248px;
  --font:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--t1);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-radius:var(--r-img);border:0}
a{color:var(--c-primary);text-decoration:none;text-underline-offset:3px}
a:hover{color:var(--c-primary-d)}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--t1);line-height:1.35;letter-spacing:-.01em}
h2{font-size:26px}
h3{font-size:20px}
h4{font-size:17px}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
::selection{background:rgba(31,95,169,.16)}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}

/* ---------- 侧栏 ---------- */
.app-sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:var(--c-surface);border-right:1px solid var(--c-line);
  z-index:60;display:flex;flex-direction:column;
  transition:transform .28s cubic-bezier(.4,0,.2,1);
}
.sidebar-inner{
  display:flex;flex-direction:column;height:100%;
  padding:24px 18px 20px;overflow-y:auto;
}
.sidebar-inner::-webkit-scrollbar{width:6px}
.sidebar-inner::-webkit-scrollbar-thumb{background:var(--c-line-strong);border-radius:999px}
.brand{
  display:flex;align-items:center;gap:12px;
  padding:4px 8px 18px;margin-bottom:16px;
  border-bottom:1px solid var(--c-line);
}
.brand:hover{text-decoration:none}
.brand-mark{
  width:42px;height:42px;flex:none;border-radius:13px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-l));
  color:#fff;display:grid;place-items:center;
  font-size:17px;font-weight:700;letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;min-width:0}
.brand-text strong{font-size:15px;font-weight:700;color:var(--t1);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-text small{font-size:11.5px;color:var(--t3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.side-nav{display:flex;flex-direction:column;gap:6px}
.side-link{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;border-radius:var(--r-sm);
  font-size:15px;font-weight:500;color:var(--t2);
  transition:background .2s ease,color .2s ease;
}
.side-link svg{width:20px;height:20px;flex:none;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.side-link:hover{background:var(--c-primary-50);color:var(--c-primary-d);text-decoration:none}
.side-link.is-active{background:var(--c-primary-50);color:var(--c-primary);font-weight:600}
.side-link.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-primary);
}
.sidebar-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--c-line)}
.sidebar-foot .btn{width:100%;margin-bottom:14px}
.sidebar-meta{margin:0;font-size:12.5px;line-height:1.75;color:var(--t3)}
.sidebar-meta a{color:var(--t2);font-weight:500}
.sidebar-meta a:hover{color:var(--c-primary)}

/* ---------- 移动端顶栏 ---------- */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:70;
  height:56px;align-items:center;gap:10px;
  padding:0 14px;background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-line);
}
.hamburger{
  width:44px;height:44px;flex:none;border:0;background:transparent;
  display:grid;place-content:center;gap:5px;cursor:pointer;border-radius:10px;
}
.hamburger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--t1);transition:background .2s}
.hamburger:hover span{background:var(--c-primary)}
.mobile-brand{
  flex:1;min-width:0;font-size:15px;font-weight:700;color:var(--t1);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.mobile-brand:hover{text-decoration:none;color:var(--c-primary-d)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(12,20,30,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
  z-index:55;display:none;
}
.drawer-mask.is-visible{opacity:1;visibility:visible}

/* ---------- 主区 ---------- */
.app-main{margin-left:var(--sidebar-w);min-height:100vh}
.wrap{max-width:1120px;margin:0 auto;padding:0 40px}
.section{padding:80px 0}
.section:first-child{padding-top:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  font-size:15.5px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 4px 14px rgba(31,95,169,.22)}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;box-shadow:var(--sh-2)}
.btn-primary:active{background:var(--c-primary-d);box-shadow:0 2px 8px rgba(31,95,169,.2)}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-50);color:var(--c-primary-d);border-color:var(--c-primary-d)}
.btn-soft{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-line)}
.btn-soft:hover{background:var(--c-primary-50);border-color:var(--c-primary-50)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;transform:none;box-shadow:none}

/* ---------- 徽章 / 胶囊 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:500;line-height:1.6;
  background:var(--c-primary-50);color:var(--c-primary);
}
.badge-accent{background:rgba(18,160,138,.12);color:#0B7A69}
.badge-warm{background:rgba(233,163,60,.14);color:#A96D12}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.85);border:1px solid rgba(31,95,169,.16);
  color:var(--c-primary);font-size:13.5px;font-weight:500;
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:84px 0 68px;border-bottom:1px solid var(--c-line)}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(102deg,rgba(255,255,255,.95) 0%,rgba(237,244,252,.9) 48%,rgba(237,244,252,.58) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:1120px;margin:0 auto;padding:0 40px}
.hero-copy{max-width:720px}
.hero h1{
  font-size:38px;line-height:1.28;margin:22px 0 0;letter-spacing:-.02em;
}
.hero-sub{margin:20px 0 0;font-size:18px;line-height:1.8;color:var(--t2);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:12px 36px;margin-top:44px;
  padding-top:26px;border-top:1px solid rgba(31,95,169,.14);
}
.hero-trust li{display:flex;align-items:center;gap:9px;font-size:14.5px;font-weight:500;color:var(--t2)}
.hero-trust svg{width:18px;height:18px;stroke:var(--c-accent);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}

/* ---------- 品牌主张带 ---------- */
.claim-band{
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  flex-wrap:wrap;padding:44px 48px;
  background:var(--c-primary-50);
  border:1px solid rgba(31,95,169,.10);
  border-radius:22px;
}
.claim-band h2{font-size:24px;max-width:660px;line-height:1.5}
.claim-figures{display:flex;align-items:center;gap:36px;flex-wrap:wrap}
.claim-figure{display:flex;flex-direction:column;gap:2px}
.claim-num{
  font-size:34px;font-weight:700;line-height:1.1;color:var(--c-warm);
  font-variant-numeric:tabular-nums;
}
.claim-label{font-size:13px;color:var(--t2)}

/* ---------- 通用版块标题 ---------- */
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;flex-wrap:wrap;margin-bottom:34px;
}
.sec-head h2{font-size:26px}
.sec-head .sec-desc{margin:10px 0 0;font-size:15.5px;color:var(--t2);max-width:660px}
.sec-more{font-size:15px;font-weight:600;color:var(--c-primary);white-space:nowrap}
.sec-more:hover{color:var(--c-primary-d);text-decoration:underline}

/* ---------- 故事区 ---------- */
.story-grid{display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center}
.story-figure{position:relative}
.story-figure img{
  width:100%;height:420px;object-fit:cover;border-radius:18px;
  box-shadow:var(--sh-1);
}
.story-figure::after{
  content:"";position:absolute;left:-14px;bottom:-14px;
  width:130px;height:130px;border-radius:18px;
  border:2px solid rgba(31,95,169,.18);z-index:-1;
}
.story-text{max-width:620px}
.story-text h2{margin-bottom:20px}
.story-text p{font-size:16.5px;color:var(--t2)}
.check-list{margin-top:26px;display:flex;flex-direction:column;gap:14px}
.check-list li{display:flex;gap:12px;font-size:15.5px;color:var(--t1);line-height:1.75}
.check-list svg{width:20px;height:20px;flex:none;margin-top:5px;stroke:var(--c-accent);fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 精选内容卡 ---------- */
.feature-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px;align-items:stretch}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--c-primary-50)}
.card:hover .card-link{color:var(--c-primary-d)}
.card-media{overflow:hidden;background:var(--c-primary-50)}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease}
.card:hover .card-media img{transform:scale(1.035)}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px}
.card-body h3{font-size:19px;line-height:1.45}
.card-body p{font-size:15px;color:var(--t2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--c-primary);
}
.card-link svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s ease}
.card:hover .card-link svg{transform:translateX(3px)}
.card-lead{display:grid;grid-template-columns:45% 1fr}
.card-lead .card-media{height:100%;min-height:280px}
.card-stack{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.card-mini{display:flex;flex-direction:column}
.card-mini .card-media{height:150px}
.card-mini .card-body{padding:20px;gap:10px}
.card-mini .card-body h3{font-size:16.5px}

/* ---------- 信任背书 ---------- */
.trust-band{
  background:var(--c-bg-alt);border-radius:22px;padding:46px 48px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:34px;
}
.trust-item{display:flex;flex-direction:column;gap:12px}
.trust-icon{
  width:44px;height:44px;border-radius:12px;background:var(--c-surface);
  display:grid;place-items:center;border:1px solid var(--c-line);
}
.trust-icon svg{width:22px;height:22px;stroke:var(--c-primary);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.trust-item h3{font-size:16.5px}
.trust-item p{margin:0;font-size:14.5px;color:var(--t2);line-height:1.75}

/* ---------- 最新信息 ---------- */
.news-list{display:flex;flex-direction:column;gap:18px}
.news-item{
  display:grid;grid-template-columns:200px 1fr;gap:24px;
  padding:18px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--c-primary-50);text-decoration:none}
.news-thumb{overflow:hidden;border-radius:12px;background:var(--c-primary-50)}
.news-thumb img{width:100%;height:134px;object-fit:cover;border-radius:12px;transition:transform .4s ease}
.news-item:hover .news-thumb img{transform:scale(1.04)}
.news-main{display:flex;flex-direction:column;gap:10px;min-width:0}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--t3)}
.news-main h3{
  font-size:17.5px;line-height:1.5;color:var(--t1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-item:hover .news-main h3{color:var(--c-primary-d)}
.news-main p{
  margin:0;font-size:14.5px;color:var(--t2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-arrow{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-primary);
}
.news-arrow svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s ease}
.news-item:hover .news-arrow svg{transform:translateX(3px)}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:16px;
  padding:56px 24px;text-align:center;
  background:var(--c-primary-50);border:1px dashed rgba(31,95,169,.25);
  border-radius:var(--r-card);
}
.empty-state svg{width:44px;height:44px;stroke:var(--c-primary);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.empty-state p{margin:0;font-size:15.5px;color:var(--t2)}
.empty-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:14px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(31,95,169,.28);box-shadow:var(--sh-1)}
.faq-q{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 58px 20px 22px;
  font-size:17px;font-weight:600;color:var(--t1);
  transition:color .2s ease;
}
.faq-q::-webkit-details-marker{display:none}
.faq-q::before{
  content:"";position:absolute;right:22px;top:50%;width:14px;height:2px;
  background:var(--c-primary);transform:translateY(-50%);border-radius:2px;
}
.faq-q::after{
  content:"";position:absolute;right:28px;top:50%;width:2px;height:14px;
  background:var(--c-primary);transform:translateY(-50%);border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.faq-item[open] .faq-q::after{transform:translateY(-50%) rotate(90deg);opacity:0}
.faq-item[open] .faq-q{color:var(--c-primary-d);box-shadow:inset 3px 0 0 var(--c-primary)}
.faq-q:hover{color:var(--c-primary)}
.faq-a{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--t2);max-width:760px}

/* ---------- CTA ---------- */
.cta-panel{
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;
  background:var(--c-primary-50);border:1px solid rgba(31,95,169,.12);
  border-radius:24px;padding:52px;
}
.cta-copy h2{font-size:26px;margin-bottom:14px}
.cta-copy p{margin:0;font-size:16px;color:var(--t2);max-width:460px}
.subscribe-form{display:flex;gap:12px;align-items:flex-end}
.field{flex:1;display:flex;flex-direction:column;gap:7px;min-width:0}
.field label{font-size:13px;color:var(--t3)}
.field input{
  height:48px;width:100%;padding:0 14px;
  border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:var(--c-surface);color:var(--t1);font-size:15px;font-family:inherit;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:#A9B4C2}
.field input:hover{border-color:var(--c-line-strong)}
.field input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(18,160,138,.18)}
.field-hint{margin:12px 0 0;font-size:13px;color:var(--t3)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-left:var(--sidebar-w);margin-top:24px;
  background:#0F1D2E;color:#fff;padding:64px 0 0;
}
.footer-grid{
  max-width:1120px;margin:0 auto;padding:0 40px;
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:44px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-mark{
  width:40px;height:40px;flex:none;border-radius:12px;
  background:linear-gradient(135deg,var(--c-primary-l),var(--c-primary));
  display:grid;place-items:center;font-size:16px;font-weight:700;color:#fff;
}
.footer-brand strong{font-size:16px;font-weight:700;color:#fff}
.footer-desc{margin:0;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.68);max-width:320px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col span{font-size:14.5px;color:rgba(255,255,255,.7);transition:color .2s ease}
.footer-col a:hover{color:var(--c-accent);text-decoration:none}
.footer-cta-box{
  margin-top:16px;padding:16px;border-radius:12px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);
}
.footer-cta-box p{margin:0 0 12px;font-size:13.5px;color:rgba(255,255,255,.68);line-height:1.7}
.footer-bottom{
  max-width:1120px;margin:52px auto 0;padding:20px 40px 26px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:var(--c-accent);text-decoration:none}

/* ---------- 响应式 ---------- */
@media (max-width:1439.98px){
  :root{--sidebar-w:248px}
}
@media (max-width:1279.98px){
  .wrap,.hero-inner,.footer-grid,.footer-bottom{padding-left:32px;padding-right:32px}
  .story-grid{gap:40px}
  .card-lead{grid-template-columns:42% 1fr}
}
@media (max-width:1023.98px){
  .app-sidebar{transform:translateX(-100%);box-shadow:var(--sh-3);width:280px}
  .app-sidebar.is-open{transform:translateX(0)}
  .app-main,.site-footer{margin-left:0}
  .mobile-bar{display:flex}
  .drawer-mask{display:block}
  .hero{padding:64px 0 54px}
  .hero h1{font-size:31px}
  .section{padding:64px 0}
  .story-grid{grid-template-columns:1fr;gap:34px}
  .story-figure img{height:340px}
  .story-text{max-width:none}
  .feature-grid{grid-template-columns:1fr}
  .card-lead{grid-template-columns:1fr}
  .card-lead .card-media{height:280px;min-height:0}
  .card-stack{grid-template-rows:auto auto;grid-template-columns:1fr 1fr}
  .trust-band{grid-template-columns:1fr 1fr;gap:30px;padding:38px 32px}
  .cta-panel{grid-template-columns:1fr;gap:32px;padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767.98px){
  .claim-band{padding:34px 26px;gap:26px}
  .claim-band h2{font-size:21px}
  .trust-band{grid-template-columns:1fr;padding:32px 24px}
  .news-item{grid-template-columns:1fr;gap:16px;padding:16px}
  .news-thumb img{height:190px}
  .card-stack{grid-template-columns:1fr}
  .faq-q{font-size:16px;padding:18px 52px 18px 18px}
  .faq-a{padding:0 18px 20px}
}
@media (max-width:639.98px){
  body{font-size:16px;line-height:1.8}
  .wrap,.hero-inner,.footer-grid,.footer-bottom{padding-left:16px;padding-right:16px}
  .hero{padding:42px 0 40px}
  .hero h1{font-size:26px;margin-top:18px}
  .hero-sub{font-size:16px;margin-top:16px}
  .hero-actions{margin-top:26px;gap:12px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-trust{gap:10px 20px;margin-top:32px;padding-top:20px}
  .hero-trust li{font-size:13.5px}
  .section{padding:48px 0}
  h2,.sec-head h2,.cta-copy h2{font-size:22px}
  .sec-head{margin-bottom:26px}
  .card-body{padding:18px}
  .card-mini .card-body{padding:16px}
  .claim-num{font-size:28px}
  .subscribe-form{flex-direction:column;align-items:stretch;gap:14px}
  .subscribe-form .btn{width:100%}
  .cta-panel{padding:32px 20px;border-radius:18px}
  .claim-band{border-radius:18px}
  .trust-band{border-radius:18px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-top:0}
  .site-footer{padding-top:48px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;margin-top:36px}
  .story-figure img{height:230px}
}

/* roulang page: article */
:root{
  --c-primary:#1F5FA9;
  --c-primary-d:#0E3E77;
  --c-primary-l:#3E86D6;
  --c-primary-50:#EDF4FC;
  --c-accent:#12A08A;
  --c-warm:#E9A33C;
  --c-bg:#F6F8FB;
  --c-bg-alt:#EEF3F9;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F2;
  --c-line-strong:#D2DBE7;
  --t1:#101C2B;
  --t2:#4C5C70;
  --t3:#7A8899;
  --c-danger:#D9534F;
  --r-card:16px;
  --r-sm:10px;
  --r-pill:999px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(16,28,43,.05), 0 6px 18px rgba(31,95,169,.06);
  --sh-2:0 10px 26px rgba(31,95,169,.13);
  --sh-3:0 18px 48px rgba(16,28,43,.14);
  --side-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--t1);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;text-underline-offset:3px;}
a:hover{color:var(--c-primary-d);}
button,input{font-family:inherit;font-size:inherit;}
button{border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
::selection{background:var(--c-primary-50);color:var(--c-primary-d);}

/* ============ 侧栏 App Shell ============ */
.app-sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--side-w);
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  display:flex;
  flex-direction:column;
  padding:22px 16px 18px;
  overflow-y:auto;
  z-index:60;
}
.sidebar-brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:4px 8px 20px;
}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;
  border-radius:12px;
  background:linear-gradient(160deg,var(--c-primary),var(--c-primary-d));
  color:#fff;
  display:grid;place-items:center;
  font-size:19px;font-weight:700;
  letter-spacing:0;
  box-shadow:var(--sh-1);
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--t1);}
.brand-text span{font-size:12px;color:var(--t3);letter-spacing:.5px;}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:4px;}
.side-nav a{
  position:relative;
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;
  border-radius:var(--r-sm);
  color:var(--t2);
  font-size:15px;
  transition:background .16s ease,color .16s ease;
}
.side-nav a i{width:20px;font-size:16px;text-align:center;color:var(--t3);transition:color .16s ease;}
.side-nav a:hover{background:var(--c-primary-50);color:var(--c-primary);}
.side-nav a:hover i{color:var(--c-primary);}
.side-nav a.is-active{background:var(--c-primary-50);color:var(--c-primary);font-weight:600;}
.side-nav a.is-active i{color:var(--c-primary);}
.side-nav a.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--c-primary);
}
.side-divider{height:1px;background:var(--c-line);margin:18px 8px;}
.side-cta{padding:0 0 4px;}
.side-foot{margin-top:auto;padding:18px 10px 0;border-top:1px solid var(--c-line);font-size:13px;color:var(--t3);line-height:1.8;}
.side-foot a{color:var(--c-primary);}
.side-foot p{margin:0 0 4px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 26px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  text-align:center;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-50);color:var(--c-primary-d);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:8px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}

/* ============ 主区域 ============ */
.app-main{
  margin-left:var(--side-w);
  min-height:100vh;
  background:var(--c-bg);
  display:flex;
  flex-direction:column;
}
.container{
  width:100%;
  max-width:1120px;
  margin:0 auto;
  padding:0 32px;
}

/* ============ 移动端顶栏 ============ */
.mobile-bar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:56px;
  align-items:center;justify-content:space-between;
  padding:0 14px;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-line);
  z-index:70;
}
.mobile-brand{font-size:16px;font-weight:700;color:var(--t1);}
.hamburger{
  width:44px;height:44px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  border-radius:var(--r-sm);
  cursor:pointer;
}
.hamburger:hover{background:var(--c-primary-50);}
.hamburger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--t1);transition:.2s;}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.drawer-mask{
  display:none;
  position:fixed;inset:0;
  background:rgba(12,20,30,.45);
  z-index:55;
}

/* ============ 文章头部 TDK 视觉区 ============ */
.article-hero{
  position:relative;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding:52px 0 44px;
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.95),rgba(237,244,252,.93));
}
.article-hero .container{position:relative;z-index:1;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--t3);
  margin-bottom:20px;
}
.breadcrumb a{color:var(--t3);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-line-strong);}
.breadcrumb .current{color:var(--t2);}
.article-title{
  font-size:36px;
  line-height:1.45;
  font-weight:700;
  color:var(--t1);
  max-width:880px;
  letter-spacing:-.2px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:22px;
  font-size:13px;color:var(--t3);
  font-variant-numeric:tabular-nums;
}
.meta-row .dot{color:var(--c-line-strong);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  font-size:12px;font-weight:500;line-height:1.6;
}
.badge-cat{background:var(--c-primary-50);color:var(--c-primary);}
.badge-soft{background:rgba(18,160,138,.12);color:var(--c-accent);}

/* ============ 文章布局 ============ */
.article-section{padding:56px 0 0;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:48px;
  align-items:start;
}
.article-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:44px 48px 48px;
}

/* ============ 正文排版 ============ */
.prose{font-size:17px;line-height:1.9;color:var(--t1);word-break:break-word;}
.prose > *:first-child{margin-top:0;}
.prose p{margin:0 0 1.2em;}
.prose h2{
  position:relative;
  font-size:24px;line-height:1.5;font-weight:700;color:var(--t1);
  margin:2em 0 .8em;
  padding-left:14px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.26em;bottom:.26em;
  width:3px;border-radius:3px;background:var(--c-primary);
}
.prose h3{font-size:20px;line-height:1.55;font-weight:700;color:var(--t1);margin:1.6em 0 .6em;}
.prose h4{font-size:17px;font-weight:700;color:var(--c-primary-d);margin:1.4em 0 .5em;}
.prose ul,.prose ol{padding-left:1.4em;margin:0 0 1.2em;}
.prose ul{list-style:disc;}
.prose ol{list-style:decimal;}
.prose li{margin:.45em 0;line-height:1.85;}
.prose li::marker{color:var(--c-primary);}
.prose blockquote{
  margin:0 0 1.2em;
  padding:16px 20px;
  background:var(--c-primary-50);
  border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--t2);
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{border-radius:var(--r-img);margin:1.5em auto;}
.prose figure{margin:1.5em 0;}
.prose figcaption,.prose .caption{font-size:13px;color:var(--t3);text-align:center;margin-top:8px;}
.prose a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.prose a:hover{color:var(--c-primary-d);text-decoration-thickness:2px;}
.prose table{
  display:block;width:100%;overflow-x:auto;
  border-collapse:collapse;
  font-size:15px;
  margin:0 0 1.4em;
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
}
.prose th{background:var(--c-primary-50);color:var(--c-primary-d);font-weight:600;text-align:left;}
.prose th,.prose td{padding:12px 14px;border-bottom:1px solid var(--c-line);white-space:nowrap;}
.prose tr:last-child td{border-bottom:0;}
.prose pre{background:#0F1D2E;color:#DCE6F2;padding:18px;border-radius:12px;overflow-x:auto;font-size:14px;line-height:1.7;}
.prose code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92em;}
.prose :not(pre) > code{background:var(--c-primary-50);color:var(--c-primary-d);padding:2px 6px;border-radius:6px;}
.prose hr{border:0;height:1px;background:var(--c-line);margin:2em 0;}

/* 空态 */
.empty-state{
  text-align:center;
  padding:48px 24px;
  background:var(--c-primary-50);
  border-radius:var(--r-card);
}
.empty-icon{
  width:56px;height:56px;margin:0 auto 18px;
  border-radius:16px;
  background:var(--c-surface);
  color:var(--c-primary);
  display:grid;place-items:center;
  font-size:22px;
  box-shadow:var(--sh-1);
}
.empty-state h2{font-size:22px;font-weight:700;margin-bottom:10px;}
.empty-state p{font-size:15px;color:var(--t2);max-width:420px;margin:0 auto 22px;line-height:1.85;}

/* 标签 */
.tag-block{margin-top:36px;}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;
  padding:7px 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  font-size:13px;color:var(--t2);
  transition:background .16s ease,color .16s ease,border-color .16s ease,transform .16s ease;
}
.tag:hover{background:var(--c-primary-50);color:var(--c-primary);border-color:var(--c-primary-50);transform:translateY(-1px);}
.divider-line{height:1px;background:var(--c-line);margin:32px 0 0;}

/* 相关推荐 */
.related-block{margin-top:36px;}
.block-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-bottom:18px;
}
.block-title h2{font-size:20px;font-weight:700;color:var(--t1);}
.block-title a{font-size:14px;color:var(--c-primary);}
.related-list{display:flex;flex-direction:column;gap:12px;}
.related-item{
  display:flex;align-items:center;gap:16px;
  padding:12px;
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  background:var(--c-surface);
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.related-item:hover{border-color:var(--c-primary-50);box-shadow:var(--sh-2);transform:translateY(-3px);}
.related-thumb{
  width:88px;height:62px;flex:0 0 88px;
  border-radius:10px;overflow:hidden;
  background:var(--c-primary-50);
}
.related-thumb img{width:100%;height:100%;object-fit:cover;}
.related-body{min-width:0;}
.related-body h3{
  font-size:16px;font-weight:600;color:var(--t1);line-height:1.55;
  margin-bottom:6px;
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
}
.related-item:hover .related-body h3{color:var(--c-primary);}
.related-body time{font-size:13px;color:var(--t3);font-variant-numeric:tabular-nums;}
.back-row{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;}

/* 侧栏面板 */
.side-panel{
  position:sticky;top:28px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:22px;
}
.side-panel h3{font-size:15px;font-weight:700;color:var(--t1);margin-bottom:14px;}
.side-links li{margin-bottom:6px;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 12px;
  border-radius:var(--r-sm);
  font-size:14px;color:var(--t2);
  transition:background .16s ease,color .16s ease;
}
.side-links a i{color:var(--c-line-strong);font-size:12px;transition:color .16s ease;}
.side-links a:hover{background:var(--c-primary-50);color:var(--c-primary);}
.side-links a:hover i{color:var(--c-primary);}
.side-note{
  margin-top:16px;padding:14px;
  background:var(--c-primary-50);
  border-radius:var(--r-sm);
  font-size:13px;line-height:1.8;color:var(--t2);
}

/* ============ CTA 面板 ============ */
.cta-section{padding:64px 0 0;}
.cta-panel{
  background:var(--c-primary-50);
  border:1px solid var(--c-line);
  border-radius:20px;
  padding:36px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-copy h2{font-size:24px;font-weight:700;color:var(--t1);margin-bottom:10px;line-height:1.45;}
.cta-copy p{font-size:15px;color:var(--t2);line-height:1.85;max-width:560px;}
.cta-form{display:flex;gap:10px;flex:0 0 auto;}
.cta-form input{
  width:260px;height:48px;
  padding:0 14px;
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  background:var(--c-surface);
  color:var(--t1);
  transition:border-color .16s ease,box-shadow .16s ease;
}
.cta-form input::placeholder{color:var(--t3);}
.cta-form input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(18,160,138,.22);}

/* ============ 返回顶部 ============ */
.back-top{
  position:fixed;right:28px;bottom:28px;
  width:46px;height:46px;
  border-radius:50%;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  color:var(--c-primary);
  display:grid;place-items:center;
  box-shadow:var(--sh-2);
  cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease,background .18s ease;
  z-index:50;
}
.back-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--c-primary);color:#fff;transform:translateY(-2px);}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:80px;
  background:#0F1D2E;
  color:#fff;
  padding-top:56px;
}
.footer-grid{
  max-width:1120px;
  margin:0 auto;
  padding:0 32px 40px;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--c-primary);
  color:#fff;display:grid;place-items:center;
  font-weight:700;font-size:15px;
}
.footer-brand strong{font-size:16px;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.7);max-width:320px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col li{font-size:14px;color:rgba(255,255,255,.7);line-height:1.7;}
.footer-col a{color:rgba(255,255,255,.7);transition:color .16s ease;}
.footer-col a:hover{color:var(--c-accent);}
.footer-cta-box p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.7);margin-bottom:14px;}
.footer-bottom{
  max-width:1120px;
  margin:0 auto;
  padding:20px 32px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:rgba(255,255,255,.62);
}
.footer-bottom a{color:rgba(255,255,255,.82);}
.footer-bottom a:hover{color:var(--c-accent);}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  :root{--side-w:264px;}
}
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .side-panel{display:none;}
  .article-card{padding:36px 32px 40px;}
}
@media (max-width:1023px){
  .app-sidebar{
    width:280px;
    transform:translateX(-100%);
    transition:transform .28s ease;
    box-shadow:var(--sh-3);
    padding-top:26px;
  }
  .app-sidebar.is-open{transform:translateX(0);}
  .drawer-mask.is-show{display:block;}
  .app-main{margin-left:0;padding-top:56px;}
  .mobile-bar{display:flex;}
  .article-title{font-size:30px;}
  .cta-panel{flex-direction:column;align-items:flex-start;}
  .cta-form{width:100%;}
  .cta-form input{flex:1 1 auto;width:auto;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .article-hero{padding:36px 0 32px;}
  .article-title{font-size:26px;}
  .article-card{padding:26px 20px 30px;}
  .article-section{padding:36px 0 0;}
  .cta-section{padding:48px 0 0;}
  .cta-panel{padding:26px 22px;border-radius:18px;}
  .cta-form{flex-direction:column;}
  .cta-form input{width:100%;}
  .cta-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding:0 20px 32px;}
  .footer-col:first-child{grid-column:1 / -1;}
}
@media (max-width:640px){
  body{font-size:16px;line-height:1.8;}
  .prose{font-size:16px;}
  .prose h2{font-size:21px;}
  .prose h3{font-size:18px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-col:first-child{grid-column:auto;}
  .footer-col h4{
    display:flex;align-items:center;justify-content:space-between;
    margin:0;padding:13px 0;
    border-bottom:1px solid rgba(255,255,255,.12);
    cursor:pointer;
  }
  .footer-col h4::after{content:"+";font-size:17px;color:var(--c-accent);line-height:1;}
  .footer-col.is-open h4::after{content:"–";}
  .footer-col ul,.footer-col .footer-cta-box{display:none;}
  .footer-col.is-open ul{display:flex;}
  .footer-col.is-open .footer-cta-box{display:block;padding-top:14px;}
  .footer-bottom{flex-direction:column;padding:18px 20px;}
  .back-top{right:16px;bottom:16px;width:42px;height:42px;}
  .related-item{align-items:flex-start;}
  .related-thumb{width:72px;height:54px;flex:0 0 72px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#1F5FA9;
  --c-primary-d:#0E3E77;
  --c-primary-l:#3E86D6;
  --c-primary-50:#EDF4FC;
  --c-accent:#12A08A;
  --c-warm:#E9A33C;
  --c-bg:#F6F8FB;
  --c-bg-alt:#EEF3F9;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F2;
  --c-line-strong:#D2DBE7;
  --t1:#101C2B;
  --t2:#4C5C70;
  --t3:#7A8899;
  --r-card:16px;
  --r-sm:10px;
  --r-img:14px;
  --r-pill:999px;
  --sh1:0 1px 2px rgba(16,28,43,.05), 0 6px 18px rgba(31,95,169,.06);
  --sh2:0 10px 26px rgba(31,95,169,.13);
  --sh3:0 18px 48px rgba(16,28,43,.14);
  --side-w:248px;
  --pad:80px;
}
@media (min-width:1440px){ :root{ --side-w:264px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px; line-height:1.85; color:var(--t1); background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{ margin:0 0 .6em; font-weight:700; line-height:1.35; color:var(--t1); }
h1{ font-size:38px; }
h2{ font-size:26px; }
h3{ font-size:20px; }
h4{ font-size:17px; }
p{ margin:0 0 1.05em; }
ul,ol{ margin:0 0 1.05em; padding-left:1.35em; }
li{ margin:.4em 0; }
a{ color:var(--c-primary); text-decoration:none; text-underline-offset:3px; }
a:hover{ color:var(--c-primary-d); text-decoration:underline; text-decoration-thickness:2px; }
img{ display:block; max-width:100%; height:auto; }
button{ font:inherit; color:inherit; background:none; border:0; padding:0; cursor:pointer; -webkit-appearance:none; appearance:none; }
input{ font:inherit; color:inherit; }
:focus-visible{ outline:2px solid var(--c-accent); outline-offset:2px; border-radius:4px; }

.container{ width:100%; max-width:1120px; margin:0 auto; padding:0 32px; }
.section{ padding:var(--pad) 0; }
.section-alt{ background:var(--c-bg-alt); }
.section-head{ margin-bottom:28px; }
.section-head h2{ margin-bottom:10px; }
.section-head p{ color:var(--t2); max-width:680px; margin:0; }
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-size:13px; font-weight:500; letter-spacing:.02em; color:var(--c-primary);
  background:var(--c-primary-50); border-radius:var(--r-pill); padding:4px 14px; margin-bottom:14px;
}
.eyebrow::before{ content:""; width:6px; height:6px; border-radius:50%; background:var(--c-accent); }
.muted{ color:var(--t2); }
.small{ font-size:14px; color:var(--t3); }

/* ===== 侧栏 ===== */
.app-sidebar{
  position:fixed; top:0; left:0; bottom:0; width:280px; max-width:86vw;
  background:var(--c-surface); border-right:1px solid var(--c-line);
  display:flex; flex-direction:column; gap:18px; padding:22px 18px 20px;
  overflow-y:auto; transform:translateX(-100%); transition:transform .28s ease; z-index:80;
}
.app-sidebar.is-open{ transform:translateX(0); }
.sidebar-head{ padding:0 6px; }
.brand{ display:flex; align-items:center; gap:12px; text-decoration:none; color:var(--t1); }
.brand:hover{ text-decoration:none; color:var(--t1); }
.brand-mark{
  flex:0 0 auto; width:42px; height:42px; border-radius:12px; display:flex; align-items:center; justify-content:center;
  background:linear-gradient(160deg,var(--c-primary),var(--c-primary-l)); color:#fff; font-weight:700; font-size:19px;
}
.brand-text{ display:flex; flex-direction:column; line-height:1.35; }
.brand-text strong{ font-size:15px; font-weight:700; }
.brand-text em{ font-style:normal; font-size:12px; color:var(--t3); }
.side-nav{ display:flex; flex-direction:column; gap:4px; }
.side-link{
  position:relative; display:flex; align-items:center; gap:10px; height:44px; padding:0 12px;
  border-radius:var(--r-sm); color:var(--t2); font-size:15px; font-weight:500; text-decoration:none;
  transition:background-color .18s ease,color .18s ease;
}
.side-link:hover{ background:var(--c-primary-50); color:var(--c-primary); text-decoration:none; }
.side-link.is-active{ background:var(--c-primary-50); color:var(--c-primary); font-weight:600; }
.side-link.is-active::before{
  content:""; position:absolute; left:0; top:9px; bottom:9px; width:3px; border-radius:3px; background:var(--c-primary);
}
.side-ico{ width:20px; height:20px; border-radius:6px; background:var(--c-primary-50); position:relative; flex:0 0 auto; }
.side-ico::after{ content:""; position:absolute; left:6px; top:6px; width:8px; height:8px; border-radius:2px; background:var(--c-primary-l); }
.side-link.is-active .side-ico{ background:var(--c-primary); }
.side-link.is-active .side-ico::after{ background:#fff; }
.side-cta{ margin-top:auto; padding:0 6px; }
.side-note{ font-size:13px; line-height:1.7; color:var(--t3); margin:12px 0 0; }
.side-divider{ height:1px; background:var(--c-line); margin:2px 6px; }
.side-foot{ padding:0 6px; display:flex; flex-direction:column; gap:2px; font-size:12px; color:var(--t3); border-top:1px solid var(--c-line); padding-top:14px; }

@media (min-width:1024px){
  .app-sidebar{ width:var(--side-w); max-width:none; transform:none; z-index:40; }
}
.drawer-mask{
  position:fixed; inset:0; background:rgba(12,20,30,.45); opacity:0; visibility:hidden;
  transition:opacity .28s ease,visibility .28s ease; z-index:70;
}
.drawer-mask.is-open{ opacity:1; visibility:visible; }

/* ===== 移动顶栏 ===== */
.mobile-bar{
  position:sticky; top:0; z-index:60; height:56px; display:flex; align-items:center; gap:12px;
  padding:0 16px; background:var(--c-surface); border-bottom:1px solid var(--c-line);
}
.hamburger{
  width:44px; height:44px; margin-left:-8px; display:flex; flex-direction:column; justify-content:center;
  align-items:center; gap:5px; border-radius:var(--r-sm);
}
.hamburger span{ display:block; width:20px; height:2px; border-radius:2px; background:var(--t1); transition:transform .2s ease,opacity .2s ease; }
.hamburger[aria-expanded="true"] span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.hamburger[aria-expanded="true"] span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }
.mobile-brand{ flex:1 1 auto; font-size:15px; font-weight:700; color:var(--t1); text-decoration:none; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.mobile-brand:hover{ color:var(--t1); text-decoration:none; }

/* ===== 主区 ===== */
.app-main{ min-height:100vh; display:flex; flex-direction:column; }
.app-main main{ flex:1 1 auto; }
@media (min-width:1024px){
  .app-main{ margin-left:var(--side-w); }
  .mobile-bar{ display:none; }
}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:14px 26px; border-radius:var(--r-sm); font-size:16px; font-weight:500; line-height:1.2;
  text-decoration:none; cursor:pointer; white-space:nowrap; border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.btn:hover{ text-decoration:none; transform:translateY(-1px); }
.btn:active{ transform:translateY(0); }
.btn-primary{ background:var(--c-primary); color:#fff; box-shadow:var(--sh1); }
.btn-primary:hover{ background:var(--c-primary-d); color:#fff; box-shadow:var(--sh2); }
.btn-ghost{ background:transparent; color:var(--c-primary); border-color:var(--c-primary); }
.btn-ghost:hover{ background:var(--c-primary-50); color:var(--c-primary-d); }
.btn-sm{ padding:10px 18px; font-size:14px; }
.btn-block{ display:flex; width:100%; }
.btn[disabled],.btn:disabled{ opacity:.4; pointer-events:none; }

/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex; align-items:center; gap:6px; padding:3px 12px; border-radius:var(--r-pill);
  font-size:12.5px; font-weight:500; line-height:1.7; background:var(--c-primary-50); color:var(--c-primary);
}
.badge-accent{ background:rgba(18,160,138,.1); color:var(--c-accent); }
.badge-line{ background:transparent; border:1px solid var(--c-line-strong); color:var(--t2); }
.tag{
  display:inline-flex; align-items:center; padding:6px 14px; border-radius:var(--r-pill);
  border:1px solid var(--c-line); background:var(--c-surface); color:var(--t2); font-size:13.5px;
}
.tag:hover{ border-color:var(--c-primary-l); color:var(--c-primary); background:var(--c-primary-50); text-decoration:none; }

/* ===== 面包屑 ===== */
.crumbs{ font-size:13px; color:var(--t3); margin-bottom:14px; }
.crumbs a{ color:var(--t2); }
.crumbs a:hover{ color:var(--c-primary); }
.crumbs span.sep{ margin:0 6px; color:var(--c-line-strong); }

/* ===== Hero ===== */
.page-hero{
  position:relative; min-height:300px; display:flex; align-items:center; overflow:hidden;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover; background-position:center;
}
.page-hero::before{
  content:""; position:absolute; inset:0;
  background:linear-gradient(100deg,rgba(246,248,251,.95) 0%,rgba(237,244,252,.88) 52%,rgba(237,244,252,.72) 100%);
}
.page-hero .hero-inner{ position:relative; z-index:1; padding-top:46px; padding-bottom:46px; }
.page-hero h1{ font-size:36px; margin:14px 0 12px; max-width:760px; }
.hero-sub{ font-size:18px; color:var(--t2); max-width:620px; margin:0 0 22px; }
.hero-meta{ display:flex; flex-wrap:wrap; gap:10px 22px; font-size:13.5px; color:var(--t3); }
.hero-meta span{ display:inline-flex; align-items:center; gap:7px; }
.hero-meta span::before{ content:""; width:6px; height:6px; border-radius:50%; background:var(--c-accent); }

/* ===== 锚点条 ===== */
.anchor-bar{
  position:sticky; top:56px; z-index:35; background:var(--c-bg);
  border-bottom:1px solid var(--c-line); padding:12px 0;
}
@media (min-width:1024px){ .anchor-bar{ top:0; } }
.anchor-scroll{ display:flex; gap:10px; overflow-x:auto; padding:0 32px; scrollbar-width:thin; }
.anchor-scroll::-webkit-scrollbar{ height:4px; }
.anchor-scroll::-webkit-scrollbar-thumb{ background:var(--c-line-strong); border-radius:4px; }
.anchor-link{
  flex:0 0 auto; display:inline-flex; align-items:center; padding:8px 16px; border-radius:var(--r-pill);
  border:1px solid var(--c-line); background:var(--c-surface); color:var(--t2); font-size:14px; font-weight:500;
  text-decoration:none; transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.anchor-link:hover{ border-color:var(--c-primary-l); color:var(--c-primary); background:var(--c-primary-50); text-decoration:none; }
.anchor-link.is-current{ background:var(--c-primary-50); border-color:var(--c-primary-l); color:var(--c-primary); }

/* ===== 图文交替 ===== */
.split{
  display:grid; grid-template-columns:1fr; gap:28px; align-items:center;
  padding:34px 0; border-bottom:1px solid var(--c-line);
}
.split:last-child{ border-bottom:0; padding-bottom:0; }
.split-media{ border-radius:var(--r-img); overflow:hidden; box-shadow:var(--sh1); background:var(--c-primary-50); }
.split-media img{ width:100%; aspect-ratio:16/10; object-fit:cover; }
.split-body h3{ margin-bottom:12px; }
.split-body p{ color:var(--t2); }
.point-list{ list-style:none; padding:0; margin:16px 0 0; }
.point-list li{ position:relative; padding-left:24px; color:var(--t2); font-size:15.5px; }
.point-list li::before{
  content:""; position:absolute; left:2px; top:12px; width:8px; height:8px; border-radius:2px;
  background:var(--c-primary-l); transform:rotate(45deg);
}
@media (min-width:768px){
  .split{ grid-template-columns:1fr 1fr; gap:52px; }
  .split.reverse .split-media{ order:2; }
}

/* ===== 场景卡 ===== */
.scene-layout{ display:grid; grid-template-columns:1fr; gap:28px; }
@media (min-width:960px){ .scene-layout{ grid-template-columns:5fr 7fr; gap:52px; align-items:start; } }
.scene-note{ background:var(--c-surface); border:1px solid var(--c-line); border-radius:var(--r-card); padding:26px; box-shadow:var(--sh1); }
.scene-note h3{ margin-bottom:10px; }
.scene-note p{ color:var(--t2); font-size:15.5px; margin-bottom:0; }
.scene-grid{ display:grid; grid-template-columns:1fr; gap:18px; }
@media (min-width:600px){ .scene-grid{ grid-template-columns:1fr 1fr; } }
.scene-card{
  background:var(--c-surface); border:1px solid var(--c-line); border-radius:var(--r-card); padding:22px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.scene-card:hover{ transform:translateY(-3px); box-shadow:var(--sh2); border-color:var(--c-primary-50); }
.scene-card h4{ margin-bottom:8px; }
.scene-card p{ font-size:15px; color:var(--t2); margin:0; }
.scene-num{ font-size:13px; color:var(--c-warm); font-weight:700; font-variant-numeric:tabular-nums; display:block; margin-bottom:6px; }

/* ===== 数据条 ===== */
.stats-band{ background:var(--c-primary-50); border-top:1px solid var(--c-line); border-bottom:1px solid var(--c-line); }
.stats-grid{ display:grid; grid-template-columns:1fr; gap:22px; }
@media (min-width:768px){ .stats-grid{ grid-template-columns:repeat(3,1fr); gap:36px; } }
.stat-item{ border-left:3px solid var(--c-primary-l); padding-left:20px; }
.stat-num{ font-size:32px; font-weight:700; color:var(--c-warm); font-variant-numeric:tabular-nums; line-height:1.3; }
.stat-label{ font-size:15px; color:var(--t2); }
.stat-note{ font-size:13.5px; color:var(--t3); margin:4px 0 0; }

/* ===== 表格 ===== */
.table-wrap{
  overflow-x:auto; background:var(--c-surface); border:1px solid var(--c-line);
  border-radius:var(--r-card); box-shadow:var(--sh1);
}
table.spec-table{ width:100%; border-collapse:collapse; min-width:680px; margin:0; }
table.spec-table th,table.spec-table td{ padding:15px 20px; text-align:left; font-size:15px; border-bottom:1px solid var(--c-line); }
table.spec-table th{ background:var(--c-primary-50); color:var(--c-primary-d); font-weight:700; font-size:14.5px; white-space:nowrap; }
table.spec-table tbody tr:last-child td{ border-bottom:0; }
table.spec-table tbody tr:hover td{ background:#FAFCFF; }
table.spec-table td:first-child{ font-weight:600; color:var(--t1); white-space:nowrap; }
table.spec-table td{ color:var(--t2); }

/* ===== FAQ ===== */
.faq-list{ display:flex; flex-direction:column; gap:12px; }
.faq-item{
  background:var(--c-surface); border:1px solid var(--c-line); border-left:3px solid transparent;
  border-radius:var(--r-img); overflow:hidden; transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{ border-left-color:var(--c-primary); box-shadow:var(--sh1); }
.faq-q{
  width:100%; display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding:18px 22px; text-align:left; font-size:17px; font-weight:600; color:var(--t1);
}
.faq-q:hover{ color:var(--c-primary-d); }
.faq-mark{ position:relative; flex:0 0 auto; width:14px; height:14px; }
.faq-mark::before,.faq-mark::after{ content:""; position:absolute; background:var(--c-primary); border-radius:2px; transition:transform .22s ease,opacity .22s ease; }
.faq-mark::before{ left:0; top:6px; width:14px; height:2px; }
.faq-mark::after{ left:6px; top:0; width:2px; height:14px; }
.faq-item.is-open .faq-mark::after{ transform:scaleY(0); opacity:0; }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .3s ease; }
.faq-a-inner{ padding:0 22px 20px; color:var(--t2); font-size:15.5px; }
.faq-a-inner p:last-child{ margin-bottom:0; }

/* ===== CTA ===== */
.cta-panel{
  background:var(--c-primary-50); border:1px solid var(--c-line); border-radius:22px;
  padding:44px; display:grid; grid-template-columns:1fr; gap:26px; align-items:center;
}
@media (min-width:900px){ .cta-panel{ grid-template-columns:1fr 1fr; gap:48px; padding:52px; } }
.cta-panel h2{ margin-bottom:10px; }
.cta-panel p{ color:var(--t2); margin:0; }
.cta-form{ display:flex; flex-direction:column; gap:8px; }
.cta-form label{ font-size:13px; color:var(--t3); }
.field-row{ display:flex; gap:10px; }
.field-row input{
  flex:1 1 auto; min-width:0; height:48px; padding:0 16px; border-radius:var(--r-sm);
  border:1px solid var(--c-line); background:var(--c-surface); color:var(--t1); transition:border-color .18s ease,box-shadow .18s ease;
}
.field-row input::placeholder{ color:var(--t3); }
.field-row input:focus{ outline:none; border-color:var(--c-primary); box-shadow:0 0 0 3px rgba(18,160,138,.22); }
.form-tip{ font-size:13px; color:var(--t3); min-height:20px; }
.form-tip.is-error{ color:#C4453C; }
.form-tip.is-ok{ color:var(--c-accent); }
@media (max-width:560px){ .field-row{ flex-direction:column; } .field-row .btn{ width:100%; } }

/* ===== 页脚 ===== */
.site-footer{ background:#0F1D2E; color:#fff; padding:56px 0 0; margin-top:0; }
.footer-grid{
  max-width:1120px; margin:0 auto; padding:0 32px;
  display:grid; grid-template-columns:1fr; gap:32px;
}
@media (min-width:768px){ .footer-grid{ grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:40px; } }
.footer-brand{ display:flex; align-items:center; gap:10px; margin-bottom:14px; }
.footer-mark{
  width:36px; height:36px; border-radius:10px; display:flex; align-items:center; justify-content:center;
  background:var(--c-primary); color:#fff; font-weight:700;
}
.footer-brand strong{ font-size:16px; }
.footer-desc{ color:rgba(255,255,255,.7); font-size:14.5px; margin:0; }
.footer-col h4{ color:#fff; font-size:15px; margin-bottom:14px; }
.footer-col ul{ list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:9px; }
.footer-col li{ font-size:14.5px; color:rgba(255,255,255,.7); }
.footer-col a{ color:rgba(255,255,255,.75); }
.footer-col a:hover{ color:var(--c-accent); text-decoration:none; }
.footer-cta-box p{ color:rgba(255,255,255,.7); font-size:14.5px; margin-bottom:14px; }
.footer-bottom{
  max-width:1120px; margin:44px auto 0; padding:20px 32px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex; flex-wrap:wrap; gap:10px 24px; justify-content:space-between;
  font-size:13.5px; color:rgba(255,255,255,.6);
}
.footer-bottom a{ color:rgba(255,255,255,.75); }
.footer-bottom a:hover{ color:var(--c-accent); text-decoration:none; }

/* ===== 响应式 ===== */
@media (max-width:1023px){
  :root{ --pad:56px; }
  .container{ padding:0 20px; }
  .anchor-scroll{ padding:0 20px; }
  .footer-grid,.footer-bottom{ padding-left:20px; padding-right:20px; }
}
@media (max-width:640px){
  :root{ --pad:48px; }
  body{ font-size:16px; line-height:1.8; }
  h1{ font-size:27px; }
  .page-hero h1{ font-size:27px; }
  h2{ font-size:23px; }
  .container{ padding:0 16px; }
  .anchor-scroll{ padding:0 16px; }
  .cta-panel{ padding:26px 20px; border-radius:18px; }
  .footer-grid,.footer-bottom{ padding-left:16px; padding-right:16px; }
  .hero-sub{ font-size:16px; }
  .stat-num{ font-size:28px; }
}

/* roulang page: category3 */
:root{
  --c-primary:#1F5FA9;
  --c-primary-d:#0E3E77;
  --c-primary-l:#3E86D6;
  --c-primary-50:#EDF4FC;
  --c-accent:#12A08A;
  --c-warm:#E9A33C;
  --c-bg:#F6F8FB;
  --c-bg-alt:#EEF3F9;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F2;
  --c-line-strong:#D2DBE7;
  --t1:#101C2B;
  --t2:#4C5C70;
  --t3:#7A8899;
  --r-card:16px;
  --r-sm:10px;
  --r-pill:999px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(16,28,43,.05), 0 6px 18px rgba(31,95,169,.06);
  --sh-2:0 10px 26px rgba(31,95,169,.13);
  --sh-3:0 18px 48px rgba(16,28,43,.14);
  --shell:248px;
  --font:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--t1);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--c-primary);text-decoration:none;text-underline-offset:3px;transition:color .18s ease;}
a:hover{color:var(--c-primary-d);text-decoration:underline;}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--t1);line-height:1.35;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
.foundation-clear{background:none;}

/* ============ 布局壳 ============ */
.app-sidebar{
  position:fixed;top:0;left:0;width:var(--shell);height:100vh;
  background:var(--c-surface);border-right:1px solid var(--c-line);
  padding:24px 18px 28px;display:flex;flex-direction:column;gap:18px;
  overflow-y:auto;z-index:60;
}
.app-main{
  margin-left:var(--shell);min-height:100vh;display:flex;flex-direction:column;
}
.app-main > main{flex:1 1 auto;}
.container{width:100%;max-width:1120px;margin:0 auto;padding:0 32px;}

/* ============ 侧栏品牌 ============ */
.sidebar-head{display:flex;align-items:center;gap:12px;padding:4px 6px 16px;border-bottom:1px solid var(--c-line);}
.logo-mark{
  width:44px;height:44px;flex:0 0 44px;border-radius:12px;
  background:linear-gradient(140deg,var(--c-primary) 0%,var(--c-primary-l) 100%);
  color:#fff;font-weight:700;font-size:20px;display:flex;align-items:center;justify-content:center;
  letter-spacing:0;
}
.logo-text{display:flex;flex-direction:column;line-height:1.3;}
.logo-text strong{font-size:16px;color:var(--t1);letter-spacing:.2px;}
.logo-text em{font-style:normal;font-size:12px;color:var(--t3);}

/* ============ 侧栏导航 ============ */
.sidebar-nav{display:flex;flex-direction:column;gap:6px;}
.nav-item{
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:var(--r-sm);
  color:var(--t2);font-size:15px;font-weight:500;
  border-left:3px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.nav-item i{width:20px;font-size:15px;text-align:center;color:var(--t3);transition:color .18s ease;}
.nav-item:hover{background:var(--c-primary-50);color:var(--c-primary);text-decoration:none;}
.nav-item:hover i{color:var(--c-primary);}
.nav-item.active{
  background:var(--c-primary-50);color:var(--c-primary);
  border-left-color:var(--c-primary);font-weight:700;
}
.nav-item.active i{color:var(--c-primary);}
.sidebar-divider{height:1px;background:var(--c-line);margin:2px 0;}
.sidebar-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line);font-size:13px;color:var(--t3);line-height:1.7;}
.sidebar-foot p{margin:0 0 2px;}
.sidebar-foot a{font-size:13px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.2px;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn:active{transform:translateY(0);box-shadow:none;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;color:var(--c-primary);border:1px solid var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-50);color:var(--c-primary-d);border-color:var(--c-primary-d);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.4;pointer-events:none;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:500;line-height:1.7;
}
.badge-light{background:var(--c-primary-50);color:var(--c-primary);}
.badge-accent{background:rgba(18,160,138,.1);color:var(--c-accent);}
.badge-warm{background:rgba(233,163,60,.14);color:#B7791F;}

/* ============ 移动端顶栏 ============ */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  background:rgba(255,255,255,.96);border-bottom:1px solid var(--c-line);
  align-items:center;justify-content:space-between;
  padding:0 12px;z-index:80;
}
.hamburger{
  width:44px;height:44px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border-radius:var(--r-sm);
}
.hamburger span{display:block;width:20px;height:2px;background:var(--t1);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.hamburger:hover{background:var(--c-primary-50);}
.mobile-brand{font-size:16px;font-weight:700;color:var(--t1);}
.mobile-brand:hover{text-decoration:none;color:var(--c-primary);}
.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(12,20,30,.45);z-index:55;
}
.drawer-mask.show{display:block;}

/* ============ Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  min-height:300px;display:flex;align-items:center;
  border-bottom:1px solid var(--c-line);
}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  filter:saturate(.95);
}
.page-hero .hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(246,248,251,.94) 0%,rgba(237,244,252,.88) 52%,rgba(237,244,252,.72) 100%);
}
.hero-inner{position:relative;z-index:2;padding-top:52px;padding-bottom:56px;}
.breadcrumb{font-size:13px;color:var(--t3);margin-bottom:18px;display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.breadcrumb a{color:var(--t3);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb span.sep{color:var(--c-line-strong);}
.page-hero h1{
  font-size:36px;line-height:1.3;letter-spacing:-.2px;margin:14px 0 16px;max-width:820px;
}
.hero-sub{
  font-size:17px;line-height:1.8;color:var(--t2);max-width:660px;margin:0 0 26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;padding-top:22px;
  border-top:1px solid var(--c-line-strong);font-size:14px;color:var(--t2);
}
.hero-meta b{color:var(--c-warm);font-size:22px;font-variant-numeric:tabular-nums;margin-right:6px;font-weight:700;}

/* ============ 锚点导航 ============ */
.anchor-bar{
  position:sticky;top:0;z-index:40;
  background:rgba(246,248,251,.94);
  border-bottom:1px solid var(--c-line);
  padding:12px 0;
}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;padding:0 2px;scrollbar-width:none;}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-pill{
  flex:0 0 auto;padding:8px 18px;border-radius:var(--r-pill);
  background:var(--c-surface);border:1px solid var(--c-line);
  color:var(--t2);font-size:14px;font-weight:500;
  transition:all .18s ease;
}
.anchor-pill:hover{border-color:var(--c-primary-l);color:var(--c-primary);text-decoration:none;}
.anchor-pill.current{background:var(--c-primary);border-color:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}

/* ============ 板块 ============ */
.section{padding:80px 0;}
.section-alt{background:var(--c-bg-alt);}
.section-white{background:var(--c-surface);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:1px;
  color:var(--c-accent);text-transform:uppercase;margin-bottom:10px;
}
.section-head h2{font-size:26px;margin-bottom:14px;}
.section-head p{color:var(--t2);font-size:16.5px;margin:0;}

/* ============ 规格行（左标签 + 右两列） ============ */
.spec-block{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;
}
.spec-row{
  display:grid;grid-template-columns:180px 1fr 1fr;
  border-bottom:1px solid var(--c-line);
}
.spec-row:last-child{border-bottom:0;}
.spec-row:hover{background:#FBFCFE;}
.spec-label{
  padding:24px 20px;
  background:var(--c-primary-50);border-right:1px solid var(--c-line);
  font-size:15px;font-weight:700;color:var(--c-primary-d);
  display:flex;flex-direction:column;gap:6px;
}
.spec-label em{font-style:normal;font-size:12.5px;font-weight:500;color:var(--t3);}
.spec-cell{padding:24px 24px;border-right:1px solid var(--c-line);}
.spec-cell:last-child{border-right:0;}
.spec-cell h4{font-size:16px;margin-bottom:8px;color:var(--t1);}
.spec-cell p{font-size:15px;line-height:1.8;color:var(--t2);margin:0;}
.spec-cell .tagline{
  display:inline-block;margin-top:12px;font-size:12.5px;color:var(--c-accent);
  background:rgba(18,160,138,.09);padding:2px 10px;border-radius:var(--r-pill);
}

/* ============ 对比卡（两列） ============ */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.compare-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:30px 28px;box-shadow:var(--sh-1);transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.compare-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--c-primary-50);}
.compare-card.is-featured{border-color:var(--c-primary-l);box-shadow:var(--sh-2);}
.compare-card h3{font-size:20px;margin:14px 0 10px;}
.compare-card > p{color:var(--t2);font-size:15.5px;margin-bottom:20px;}
.compare-list{display:flex;flex-direction:column;gap:12px;margin-bottom:24px;}
.compare-list li{display:flex;gap:10px;font-size:15px;color:var(--t2);line-height:1.75;}
.compare-list li i{color:var(--c-accent);margin-top:5px;font-size:14px;}
.compare-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--c-line);display:flex;align-items:baseline;gap:8px;}
.compare-foot b{font-size:26px;color:var(--c-warm);font-variant-numeric:tabular-nums;line-height:1;}
.compare-foot span{font-size:13.5px;color:var(--t3);}

/* ============ 表格 ============ */
.table-wrap{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow-x:auto;
}
table.data-table{width:100%;border-collapse:collapse;min-width:720px;}
table.data-table th{
  background:var(--c-primary-50);color:var(--c-primary-d);
  font-size:14px;font-weight:700;text-align:left;
  padding:16px 20px;border-bottom:1px solid var(--c-line-strong);white-space:nowrap;
}
table.data-table td{
  padding:16px 20px;font-size:15px;color:var(--t2);
  border-bottom:1px solid var(--c-line);vertical-align:top;line-height:1.75;
}
table.data-table tbody tr:last-child td{border-bottom:0;}
table.data-table tbody tr:hover td{background:#FBFCFE;}
table.data-table td strong{color:var(--t1);font-weight:600;}
.table-hint{font-size:13px;color:var(--t3);margin-top:12px;}

/* ============ 图文核验区 ============ */
.verify-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center;}
.verify-figure{position:relative;}
.verify-figure img{border-radius:var(--r-card);box-shadow:var(--sh-3);width:100%;}
.verify-figure figcaption{font-size:13px;color:var(--t3);text-align:center;margin-top:12px;}
.check-list{display:flex;flex-direction:column;gap:16px;margin-top:26px;}
.check-list li{
  display:flex;gap:14px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-sm);
  padding:16px 18px;transition:border-color .2s ease,box-shadow .2s ease;
}
.check-list li:hover{border-color:var(--c-primary-50);box-shadow:var(--sh-1);}
.check-list .idx{
  flex:0 0 26px;height:26px;border-radius:var(--r-pill);
  background:var(--c-primary-50);color:var(--c-primary);
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.check-list h4{font-size:16px;margin-bottom:4px;}
.check-list p{font-size:14.5px;color:var(--t2);margin:0;line-height:1.75;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:880px;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-img);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-left:3px solid var(--c-primary);box-shadow:var(--sh-1);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 56px 20px 22px;position:relative;
  font-size:17px;font-weight:600;color:var(--t1);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";position:absolute;right:22px;top:50%;width:14px;height:14px;
  transform:translateY(-50%);
  background:
    linear-gradient(var(--c-primary),var(--c-primary)) center/14px 2px no-repeat,
    linear-gradient(var(--c-primary),var(--c-primary)) center/2px 14px no-repeat;
  transition:transform .2s ease;
}
.faq-item[open] summary::after{
  background:linear-gradient(var(--c-primary),var(--c-primary)) center/14px 2px no-repeat;
}
.faq-item summary:hover{color:var(--c-primary);}
.faq-item .faq-body{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--t2);}

/* ============ CTA ============ */
.cta-panel{
  background:var(--c-primary-50);border:1px solid #DCE8F7;border-radius:24px;
  padding:48px;display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center;
}
.cta-panel h2{font-size:26px;margin-bottom:14px;}
.cta-panel p{color:var(--t2);font-size:16px;margin:0;}
.cta-form{display:flex;gap:12px;align-items:flex-start;}
.field{flex:1 1 auto;display:flex;flex-direction:column;gap:6px;}
.field label{font-size:13px;color:var(--t2);font-weight:500;}
.field input{
  height:48px;border-radius:var(--r-sm);border:1px solid var(--c-line);
  padding:0 16px;font-size:15px;font-family:inherit;color:var(--t1);
  background:#fff;transition:border-color .18s ease,box-shadow .18s ease;width:100%;
}
.field input:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(18,160,138,.22);
}
.field input::placeholder{color:var(--t3);}
.form-note{font-size:13px;color:var(--t3);margin-top:14px;}
.form-msg{font-size:13.5px;color:var(--c-accent);margin-top:10px;display:none;}
.form-msg.show{display:block;}

/* ============ 页脚 ============ */
.site-footer{
  background:#0F1D2E;color:#fff;padding:64px 32px 0;margin-top:0;
}
.footer-grid{
  max-width:1120px;margin:0 auto;
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-mark{
  width:38px;height:38px;border-radius:10px;background:var(--c-primary-l);
  display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;font-size:17px;
}
.footer-brand strong{font-size:16px;color:#fff;}
.footer-desc{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.7);margin:0;max-width:300px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:rgba(255,255,255,.7);line-height:1.7;}
.footer-col a{color:rgba(255,255,255,.7);}
.footer-col a:hover{color:var(--c-accent);text-decoration:none;}
.footer-cta-box p{font-size:14px;color:rgba(255,255,255,.7);line-height:1.75;margin-bottom:14px;}
.footer-bottom{
  max-width:1120px;margin:0 auto;padding:22px 0 30px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:var(--c-accent);text-decoration:none;}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:var(--r-pill);
  background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .25s ease;z-index:70;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--c-primary-d);color:#fff;text-decoration:none;}

/* ============ 响应式 ============ */
@media(min-width:1440px){
  :root{--shell:264px;}
}
@media(max-width:1023px){
  .app-sidebar{
    transform:translateX(-100%);transition:transform .26s ease;
    box-shadow:var(--sh-3);width:280px;
  }
  .app-sidebar.open{transform:translateX(0);}
  .app-main{margin-left:0;padding-top:56px;}
  .mobile-bar{display:flex;}
  .container{padding:0 24px;}
  .section{padding:64px 0;}
  .page-hero h1{font-size:30px;}
  .spec-row{grid-template-columns:150px 1fr 1fr;}
  .cta-panel{grid-template-columns:1fr;padding:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media(max-width:767px){
  body{font-size:16px;line-height:1.8;}
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .page-hero{min-height:260px;}
  .hero-inner{padding-top:34px;padding-bottom:38px;}
  .page-hero h1{font-size:26px;margin:12px 0 14px;}
  .hero-sub{font-size:15.5px;}
  .hero-meta{gap:18px;font-size:13px;}
  .hero-meta b{font-size:19px;}
  .section-head h2{font-size:22px;}
  .spec-block{border-radius:12px;}
  .spec-row{grid-template-columns:1fr;border-bottom:1px solid var(--c-line);}
  .spec-label{border-right:0;border-bottom:1px solid var(--c-line);padding:16px 18px;}
  .spec-cell{border-right:0;border-bottom:1px dashed var(--c-line);padding:18px;}
  .spec-cell:last-child{border-bottom:0;}
  .compare-grid{grid-template-columns:1fr;gap:18px;}
  .compare-card{padding:24px 20px;}
  .verify-grid{grid-template-columns:1fr;gap:28px;}
  .cta-panel{padding:28px 22px;border-radius:18px;}
  .cta-form{flex-direction:column;}
  .cta-form .btn{width:100%;}
  .faq-item summary{font-size:16px;padding:16px 46px 16px 18px;}
  .faq-item .faq-body{padding:0 18px 18px;}
  .site-footer{padding:48px 16px 0;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .to-top{right:16px;bottom:16px;width:42px;height:42px;}
}
@media(max-width:380px){
  .mobile-brand{font-size:15px;}
  .hamburger{width:40px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#1F5FA9;
  --c-primary-d:#0E3E77;
  --c-primary-l:#3E86D6;
  --c-primary-50:#EDF4FC;
  --c-accent:#12A08A;
  --c-warm:#E9A33C;
  --c-bg:#F6F8FB;
  --c-bg-alt:#EEF3F9;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F2;
  --c-line-strong:#D2DBE7;
  --t1:#101C2B;
  --t2:#4C5C70;
  --t3:#7A8899;
  --r-lg:16px;
  --r-md:10px;
  --r-pill:999px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(16,28,43,.05), 0 6px 18px rgba(31,95,169,.06);
  --sh-2:0 10px 26px rgba(31,95,169,.13);
  --sh-3:0 18px 48px rgba(16,28,43,.14);
  --sidebar-w:248px;
}
@media (min-width:1440px){
  :root{--sidebar-w:264px;}
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--t1);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--t1);letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img);}
a{color:var(--c-primary);text-decoration:none;text-underline-offset:3px;}
a:hover{color:var(--c-primary-d);text-decoration:underline;}
button{font-family:inherit;}
input,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
::selection{background:var(--c-primary-50);color:var(--c-primary-d);}
body.no-scroll{overflow:hidden;}

/* ---------- 布局骨架 ---------- */
.container{width:100%;max-width:1120px;margin:0 auto;padding:0 32px;}
.main-area{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
@media (max-width:640px){
  body{font-size:16px;line-height:1.8;}
  .container{padding:0 18px;}
}

/* ---------- 侧栏导航 ---------- */
.app-sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--c-surface);border-right:1px solid var(--c-line);
  z-index:70;overflow-y:auto;
}
.sidebar-inner{padding:22px 16px 28px;display:flex;flex-direction:column;gap:18px;min-height:100%;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--t1);}
.brand:hover{text-decoration:none;color:var(--t1);}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:linear-gradient(135deg,#2C74C4,#1F5FA9);
  color:#fff;display:grid;place-items:center;font-size:18px;font-weight:700;
  box-shadow:0 6px 16px rgba(31,95,169,.25);
}
.brand-text strong{display:block;font-size:15px;line-height:1.3;letter-spacing:0;}
.brand-text small{display:block;color:var(--t3);font-size:12px;line-height:1.5;}
.side-nav{display:flex;flex-direction:column;gap:4px;border-top:1px solid var(--c-line);padding-top:14px;}
.side-link{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:var(--r-md);
  color:var(--t2);font-size:15px;transition:background .2s,color .2s;
}
.side-link i{width:20px;text-align:center;font-size:15px;color:var(--c-primary-l);}
.side-link:hover{background:var(--c-primary-50);color:var(--c-primary-d);text-decoration:none;}
.side-link.is-active{background:var(--c-primary-50);color:var(--c-primary);font-weight:600;}
.side-link.is-active i{color:var(--c-primary);}
.side-link.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-primary);
}
.sidebar-cta{margin-top:auto;padding-top:8px;}
.sidebar-foot{border-top:1px solid var(--c-line);padding-top:14px;font-size:13px;color:var(--t3);line-height:1.7;}
.sidebar-foot a{font-size:13px;word-break:break-all;}
.sidebar-foot p{margin-bottom:4px;}
.sidebar-foot .muted{color:var(--t3);font-size:12px;margin-top:8px;}

/* ---------- 移动端顶栏与抽屉 ---------- */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  align-items:center;justify-content:space-between;gap:10px;
  padding:0 14px;background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--c-line);z-index:80;
}
.mobile-brand{font-size:16px;font-weight:700;color:var(--t1);text-decoration:none;}
.mobile-brand:hover{color:var(--t1);text-decoration:none;}
.hamburger{
  width:44px;height:44px;display:grid;place-content:center;gap:5px;
  background:transparent;border:1px solid var(--c-line);border-radius:var(--r-md);
  cursor:pointer;transition:background .2s,border-color .2s;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-primary-d);}
.hamburger:hover{background:var(--c-primary-50);border-color:var(--c-primary-l);}
.sidebar-mask{
  position:fixed;inset:0;background:rgba(12,20,30,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:65;
}
.sidebar-mask.is-on{opacity:1;visibility:visible;}
@media (max-width:1023px){
  .mobile-bar{display:flex;}
  .app-sidebar{transform:translateX(-100%);width:280px;box-shadow:var(--sh-3);transition:transform .28s ease;z-index:75;}
  .app-sidebar.is-open{transform:translateX(0);}
  .main-area{margin-left:0;padding-top:56px;}
}

/* ---------- 按钮 / 徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-md);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background .2s,color .2s,box-shadow .2s,transform .2s,border-color .2s;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:none;box-shadow:var(--sh-1);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-50);color:var(--c-primary-d);transform:translateY(-1px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:500;line-height:1.7;
}
.badge-soft{background:var(--c-primary-50);color:var(--c-primary);}
.badge-accent{background:rgba(18,160,138,.12);color:var(--c-accent);}
.badge-warm{background:rgba(233,163,60,.14);color:#B4791F;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  padding:44px 0 52px;
  background-image:linear-gradient(115deg,rgba(246,248,251,.93),rgba(237,244,252,.9)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:18px;}
.crumbs a{color:var(--t3);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs .cur{color:var(--t2);}
.hero-title{font-size:38px;letter-spacing:-.02em;max-width:760px;}
.hero-sub{margin-top:16px;font-size:18px;line-height:1.8;color:var(--t2);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-points{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;font-size:14px;color:var(--t2);}
.hero-points li{display:flex;align-items:center;gap:8px;}
.hero-points i{color:var(--c-accent);}
@media (max-width:640px){
  .page-hero{padding:32px 0 38px;}
  .hero-title{font-size:27px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;}
}

/* ---------- 锚点导航 ---------- */
.anchor-bar{
  position:sticky;top:0;z-index:45;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-line);
}
.anchor-inner{display:flex;gap:10px;overflow-x:auto;padding:12px 0;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-pill{
  flex:0 0 auto;padding:8px 18px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:var(--c-surface);
  font-size:14px;color:var(--t2);white-space:nowrap;
  transition:background .2s,color .2s,border-color .2s,box-shadow .2s;
}
.anchor-pill:hover{background:var(--c-primary-50);color:var(--c-primary);border-color:var(--c-primary-l);text-decoration:none;}
.anchor-pill.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
@media (max-width:1023px){
  .anchor-bar{top:56px;}
}

/* ---------- 通用板块 ---------- */
.section{padding:80px 0;}
.section-alt{background:var(--c-bg-alt);}
.section[id]{scroll-margin-top:90px;}
@media (max-width:640px){
  .section{padding:48px 0;}
  .section[id]{scroll-margin-top:130px;}
}
.section-head{max-width:720px;margin-bottom:40px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--c-primary);background:var(--c-primary-50);
  padding:5px 14px;border-radius:var(--r-pill);margin-bottom:14px;
}
.section-head h2{font-size:26px;}
.section-head .lead{margin-top:14px;font-size:16.5px;color:var(--t2);}
@media (max-width:640px){
  .section-head{margin-bottom:26px;}
  .section-head h2{font-size:22px;}
  .section-head .lead{font-size:15.5px;}
}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:6px;}
.timeline::before{
  content:"";position:absolute;left:19px;top:16px;bottom:26px;width:2px;background:var(--c-line);
}
.tl-item{position:relative;padding:0 0 28px 64px;}
.tl-item:last-child{padding-bottom:0;}
.tl-node{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;
  background:var(--c-warm);color:#fff;display:grid;place-items:center;
  font-size:16px;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:0 6px 16px rgba(233,163,60,.28);
}
.tl-body{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tl-body:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--c-primary-50);}
.tl-body h3{font-size:20px;margin-bottom:10px;}
.tl-body > p{color:var(--t2);font-size:16px;}
.tl-list{margin-top:16px;display:grid;gap:9px;}
.tl-list li{position:relative;padding-left:20px;font-size:15px;color:var(--t2);line-height:1.75;}
.tl-list li::before{
  content:"";position:absolute;left:2px;top:10px;width:6px;height:6px;border-radius:50%;background:var(--c-accent);
}
.tl-body .badge{margin-top:16px;}
@media (max-width:640px){
  .timeline::before{left:15px;}
  .tl-item{padding:0 0 24px 48px;}
  .tl-node{width:32px;height:32px;font-size:14px;}
  .tl-body{padding:18px;}
  .tl-body h3{font-size:18px;}
}
.step-shot{max-width:760px;margin:44px auto 0;text-align:center;}
.step-shot img{border-radius:var(--r-img);box-shadow:var(--sh-1);}
.step-shot figcaption{margin-top:12px;font-size:13px;color:var(--t3);}

/* ---------- 适用场景 ---------- */
.scene-grid{align-items:flex-start;}
.scene-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-1);height:100%;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--c-primary-50);}
.scene-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--c-primary-50);color:var(--c-primary);font-size:18px;margin-bottom:16px;
}
.scene-card h3{font-size:19px;margin-bottom:10px;}
.scene-card p{color:var(--t2);font-size:15.5px;}
.scene-card .badge{margin-top:16px;}

/* ---------- 排查清单 ---------- */
.check-list{display:grid;gap:14px;}
.check-row{
  display:grid;grid-template-columns:270px 1fr;gap:26px;align-items:start;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-img);
  padding:20px 24px;transition:border-color .2s,box-shadow .2s,transform .2s;
}
.check-row:hover{border-color:var(--c-primary-50);box-shadow:var(--sh-1);transform:translateY(-2px);}
.check-label{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600;color:var(--t1);}
.check-label i{color:var(--c-accent);font-size:16px;}
.check-text{color:var(--t2);font-size:15.5px;}
@media (max-width:768px){
  .check-row{grid-template-columns:1fr;gap:10px;padding:18px;}
}

/* ---------- 数据带 ---------- */
.band{background:var(--c-primary-50);}
.band-inner{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;}
.band-text h2{font-size:26px;margin-bottom:14px;}
.band-text p{color:var(--t2);font-size:16px;}
.band-text .btn{margin-top:22px;}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.stat{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:22px 18px;box-shadow:var(--sh-1);text-align:center;
}
.stat strong{
  display:block;font-size:22px;color:var(--c-primary-d);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.stat span{display:block;margin-top:6px;font-size:13.5px;color:var(--t3);}
@media (max-width:900px){
  .band-inner{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:520px){
  .stat-row{grid-template-columns:1fr;gap:12px;}
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.faq-accordion{margin:0;border:0;background:transparent;}
.faq-accordion .accordion-item{
  border:1px solid var(--c-line);border-radius:14px;overflow:hidden;
  background:var(--c-surface);margin-bottom:12px;box-shadow:var(--sh-1);
  transition:border-color .2s,box-shadow .2s;
}
.faq-accordion .accordion-item:hover{border-color:var(--c-primary-50);box-shadow:var(--sh-2);}
.faq-accordion .accordion-item.is-active{border-left:3px solid var(--c-primary);}
.faq-accordion .accordion-title{
  position:relative;display:block;padding:18px 58px 18px 22px;
  font-size:17px;font-weight:600;color:var(--t1);background:transparent;border:0;line-height:1.6;
}
.faq-accordion .accordion-title:hover{background:var(--c-primary-50);color:var(--c-primary-d);text-decoration:none;}
.faq-accordion .accordion-title::before{display:none !important;}
.faq-accordion .accordion-title::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--c-primary);line-height:1;
}
.faq-accordion .accordion-title[aria-expanded="true"]{color:var(--c-primary);}
.faq-accordion .accordion-title[aria-expanded="true"]::after{content:"−";}
.faq-accordion .accordion-content{
  display:none;border:0;background:var(--c-surface);
  padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--t2);
}
.faq-accordion .accordion-content.is-open,
.faq-accordion .accordion-content[aria-hidden="false"]{display:block;}
@media (max-width:640px){
  .faq-accordion .accordion-title{font-size:16px;padding:16px 50px 16px 16px;}
  .faq-accordion .accordion-content{padding:0 16px 18px;}
}

/* ---------- CTA ---------- */
.cta-panel{
  background:var(--c-primary-50);border:1px solid var(--c-line);
  border-radius:22px;padding:48px;
  display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;
}
.cta-panel h2{font-size:26px;margin-bottom:14px;}
.cta-panel p{color:var(--t2);font-size:16px;}
.cta-points{margin-top:18px;display:grid;gap:9px;}
.cta-points li{position:relative;padding-left:20px;font-size:15px;color:var(--t2);}
.cta-points li::before{
  content:"";position:absolute;left:2px;top:10px;width:6px;height:6px;border-radius:50%;background:var(--c-accent);
}
.cta-form label{display:block;font-size:13px;color:var(--t3);margin-bottom:8px;}
.field-row{display:flex;gap:12px;}
.field-row input{
  flex:1 1 auto;min-width:0;height:48px;padding:0 16px;
  border:1px solid var(--c-line);border-radius:var(--r-md);
  background:var(--c-surface);color:var(--t1);font-size:15px;
  transition:border-color .2s,box-shadow .2s;
}
.field-row input::placeholder{color:var(--t3);}
.field-row input:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(18,160,138,.22);
}
.form-hint{margin-top:10px;font-size:13px;color:var(--t3);}
@media (max-width:900px){
  .cta-panel{grid-template-columns:1fr;gap:28px;padding:32px;}
}
@media (max-width:520px){
  .cta-panel{padding:24px 18px;border-radius:16px;}
  .field-row{flex-direction:column;}
  .field-row .btn{width:100%;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F1D2E;color:#fff;margin-top:auto;padding:56px 0 0;}
.footer-grid{
  max-width:1120px;margin:0 auto;padding:0 32px;
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.25fr;gap:32px;
}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{font-size:14px;color:rgba(255,255,255,.7);}
.footer-col a{color:rgba(255,255,255,.72);}
.footer-col a:hover{color:var(--c-accent);text-decoration:none;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:rgba(255,255,255,.12);color:#fff;font-weight:700;font-size:16px;
}
.footer-brand strong{font-size:16px;color:#fff;}
.footer-desc{font-size:14px;color:rgba(255,255,255,.7);max-width:320px;}
.footer-cta-box{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:14px;padding:18px;
}
.footer-cta-box p{font-size:13.5px;color:rgba(255,255,255,.72);margin-bottom:14px;}
.footer-bottom{
  max-width:1120px;margin:36px auto 0;padding:18px 32px 28px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:var(--c-accent);text-decoration:none;}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
}
@media (max-width:639px){
  .site-footer{padding-top:36px;}
  .footer-grid{grid-template-columns:1fr;padding:0 18px;gap:8px;}
  .footer-col{border-bottom:1px solid rgba(255,255,255,.1);padding:14px 0;}
  .footer-col h4{margin-bottom:0;cursor:pointer;position:relative;padding-right:26px;}
  .footer-col h4::after{
    content:"+";position:absolute;right:2px;top:-2px;font-size:18px;color:rgba(255,255,255,.6);
  }
  .footer-col.is-open h4::after{content:"−";}
  .footer-col ul,.footer-col .footer-cta-box{display:none;}
  .footer-col.is-open ul{display:grid;margin-top:12px;}
  .footer-col.is-open .footer-cta-box{display:block;margin-top:12px;}
  .footer-col:first-child{border-bottom:1px solid rgba(255,255,255,.1);}
  .footer-bottom{padding:16px 18px 26px;flex-direction:column;}
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:50%;
  background:var(--c-primary);color:#fff;display:grid;place-items:center;
  border:0;cursor:pointer;box-shadow:var(--sh-2);opacity:0;visibility:hidden;
  transform:translateY(8px);transition:opacity .25s,visibility .25s,transform .25s,background .2s;
  z-index:60;
}
.to-top.is-on{opacity:1;visibility:visible;transform:none;}
.to-top:hover{background:var(--c-primary-d);}

/* roulang page: category4 */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#1F5FA9;
  --c-primary-d:#0E3E77;
  --c-primary-l:#3E86D6;
  --c-primary-50:#EDF4FC;
  --c-accent:#12A08A;
  --c-warm:#E9A33C;
  --c-bg:#F6F8FB;
  --c-bg-alt:#EEF3F9;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F2;
  --c-line-strong:#D2DBE7;
  --c-footer:#0F1D2E;
  --c-danger:#D2504A;
  --t1:#101C2B;
  --t2:#4C5C70;
  --t3:#7A8899;
  --r-card:16px;
  --r-sm:10px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,28,43,.05), 0 6px 18px rgba(31,95,169,.06);
  --sh-2:0 10px 26px rgba(31,95,169,.13);
  --sh-3:0 18px 48px rgba(16,28,43,.14);
  --sidebar-w:248px;
  --gutter:32px;
  --sec-y:80px;
}
@media (min-width:1440px){ :root{ --sidebar-w:264px; } }

/* ============ 基础 reset ============ */
*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--t1);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
}
img{ max-width:100%; height:auto; display:block; }
a{ color:var(--c-primary); text-decoration:none; text-underline-offset:3px; }
a:hover{ color:var(--c-primary-d); text-decoration:underline; }
button{ font-family:inherit; font-size:inherit; color:inherit; background:none; border:0; cursor:pointer; appearance:none; }
input{ font-family:inherit; font-size:inherit; }
h1,h2,h3,h4{ margin:0; font-weight:700; color:var(--t1); line-height:1.35; letter-spacing:0; }
h1{ font-size:38px; }
h2{ font-size:26px; }
h3{ font-size:20px; }
h4{ font-size:17px; }
p{ margin:0 0 1.05em; }
p:last-child{ margin-bottom:0; }
ul,ol{ margin:0; padding:0; list-style:none; }
hr{ border:0; border-top:1px solid var(--c-line); margin:0; }
:focus{ outline:none; }
:focus-visible{ outline:2px solid var(--c-accent); outline-offset:2px; border-radius:6px; }
::selection{ background:var(--c-primary-50); color:var(--c-primary-d); }

/* ============ 容器 ============ */
.container{
  width:100%;
  max-width:1120px;
  margin:0 auto;
  padding:0 var(--gutter);
}
.sec{ padding:var(--sec-y) 0; }
.sec-alt{ background:var(--c-bg-alt); }
.sec-surface{ background:var(--c-surface); }
.sec-head{ max-width:760px; margin-bottom:36px; }
.sec-eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-size:13px; font-weight:500; letter-spacing:.02em;
  color:var(--c-accent);
  background:#E7F5F2;
  border-radius:var(--r-pill);
  padding:5px 14px;
  margin-bottom:14px;
}
.sec-head h2{ margin-bottom:12px; }
.sec-head p{ color:var(--t2); font-size:16px; }
.sec-head-row{ display:flex; align-items:flex-end; justify-content:space-between; gap:24px; margin-bottom:36px; }
.sec-head-row .sec-head{ margin-bottom:0; }
.text-link{ font-size:14px; font-weight:500; white-space:nowrap; }
.text-link i{ font-size:12px; margin-left:6px; }

/* ============ 侧栏 App Shell ============ */
.app-sidebar{
  position:fixed; top:0; left:0; bottom:0;
  width:var(--sidebar-w);
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  display:flex; flex-direction:column;
  padding:22px 16px 18px;
  z-index:60;
  overflow-y:auto;
}
.sidebar-head{ padding:0 8px 18px; border-bottom:1px solid var(--c-line); margin-bottom:14px; }
.brand{ display:flex; align-items:center; gap:10px; }
.brand:hover{ text-decoration:none; }
.brand-mark{
  width:40px; height:40px; flex:0 0 40px;
  border-radius:12px;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-l));
  color:#fff; font-weight:700; font-size:19px;
  display:flex; align-items:center; justify-content:center;
}
.brand-text{ display:flex; flex-direction:column; line-height:1.3; }
.brand-text strong{ font-size:15px; color:var(--t1); font-weight:700; }
.brand-text small{ font-size:11px; color:var(--t3); }
.sidebar-nav{ display:flex; flex-direction:column; gap:4px; }
.nav-item{
  position:relative;
  display:flex; align-items:center; gap:10px;
  height:44px; padding:0 12px;
  border-radius:var(--r-sm);
  color:var(--t2); font-size:15px; font-weight:500;
  transition:background .18s ease, color .18s ease;
}
.nav-item i{ width:20px; text-align:center; font-size:16px; color:var(--t3); transition:color .18s ease; }
.nav-item:hover{ background:var(--c-bg-alt); color:var(--c-primary-d); text-decoration:none; }
.nav-item:hover i{ color:var(--c-primary); }
.nav-item.is-active{ background:var(--c-primary-50); color:var(--c-primary); }
.nav-item.is-active i{ color:var(--c-primary); }
.nav-item.is-active::before{
  content:""; position:absolute; left:0; top:9px; bottom:9px; width:3px;
  border-radius:0 3px 3px 0; background:var(--c-primary);
}
.sidebar-sep{ height:1px; background:var(--c-line); margin:18px 8px; }
.sidebar-cta{ padding:0 8px; }
.sidebar-foot{ margin-top:auto; padding:18px 8px 0; border-top:1px solid var(--c-line); font-size:12px; color:var(--t3); line-height:1.7; }
.sidebar-foot strong{ display:block; color:var(--t2); font-size:12px; font-weight:500; margin-bottom:2px; }
.sidebar-foot a{ font-size:12px; }

/* ============ 移动顶栏 ============ */
.mobile-bar{
  display:none;
  position:fixed; top:0; left:0; right:0; height:56px;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  align-items:center; justify-content:space-between;
  padding:0 14px; gap:10px;
  z-index:80;
}
.hamburger{
  width:44px; height:44px; flex:0 0 44px;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:5px;
  border-radius:var(--r-sm);
}
.hamburger span{ display:block; width:20px; height:2px; background:var(--t1); border-radius:2px; transition:transform .2s ease, opacity .2s ease; }
.hamburger:hover{ background:var(--c-bg-alt); }
.mobile-brand{ font-weight:700; font-size:15px; color:var(--t1); }
.mobile-brand:hover{ text-decoration:none; color:var(--c-primary); }

.drawer-overlay{
  position:fixed; inset:0; background:rgba(12,20,30,.45);
  opacity:0; visibility:hidden; transition:opacity .22s ease, visibility .22s ease;
  z-index:70;
}
.drawer-overlay.is-open{ opacity:1; visibility:visible; }

/* ============ 主内容区 ============ */
.app-main{ min-height:100vh; }
@media (min-width:1024px){
  .app-main{ margin-left:var(--sidebar-w); }
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:14px 26px;
  border-radius:var(--r-sm);
  font-size:15px; font-weight:600;
  border:1px solid transparent;
  transition:background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease, box-shadow .18s ease;
  white-space:nowrap; text-decoration:none;
}
.btn:hover{ text-decoration:none; transform:translateY(-1px); }
.btn:active{ transform:translateY(0); box-shadow:none; }
.btn-primary{ background:var(--c-primary); color:#fff; box-shadow:0 1px 2px rgba(16,28,43,.05),0 6px 18px rgba(31,95,169,.16); }
.btn-primary:hover{ background:var(--c-primary-d); color:#fff; box-shadow:var(--sh-2); }
.btn-outline{ background:transparent; color:var(--c-primary); border-color:var(--c-primary); }
.btn-outline:hover{ background:var(--c-primary-50); color:var(--c-primary-d); }
.btn-ghost{ background:var(--c-primary-50); color:var(--c-primary); }
.btn-ghost:hover{ background:#E1ECF9; color:var(--c-primary-d); }
.btn-sm{ padding:10px 18px; font-size:14px; border-radius:var(--r-sm); }
.btn-lg{ padding:16px 32px; font-size:16px; }
.btn-block{ width:100%; }
.btn[disabled],.btn.is-disabled{ opacity:.4; pointer-events:none; }

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex; align-items:center; gap:6px;
  padding:3px 11px; border-radius:var(--r-pill);
  font-size:12.5px; font-weight:500; line-height:1.7;
}
.badge-blue{ background:var(--c-primary-50); color:var(--c-primary); }
.badge-green{ background:#E7F5F2; color:#0B7E6C; }
.badge-soft{ background:var(--c-bg-alt); color:var(--t2); }

/* ============ Hero ============ */
.page-hero{
  position:relative;
  min-height:300px;
  display:flex; align-items:center;
  padding:56px 0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover; background-position:center;
  overflow:hidden;
}
.page-hero::before{
  content:""; position:absolute; inset:0;
  background:linear-gradient(100deg, rgba(255,255,255,.94) 0%, rgba(237,244,252,.86) 58%, rgba(237,244,252,.62) 100%);
}
.page-hero .container{ position:relative; z-index:2; }
.crumb{ font-size:13px; color:var(--t3); margin-bottom:18px; }
.crumb a{ color:var(--t3); }
.crumb a:hover{ color:var(--c-primary); }
.crumb span{ margin:0 7px; color:var(--c-line-strong); }
.hero-tag{
  display:inline-flex; align-items:center; gap:7px;
  background:#fff; border:1px solid var(--c-line);
  color:var(--c-primary); font-size:13px; font-weight:500;
  padding:5px 14px; border-radius:var(--r-pill); margin-bottom:16px;
  box-shadow:var(--sh-1);
}
.page-hero h1{ font-size:36px; max-width:820px; margin-bottom:16px; }
.page-hero .hero-sub{ font-size:18px; color:var(--t2); max-width:660px; margin-bottom:26px; }
.hero-actions{ display:flex; flex-wrap:wrap; gap:14px; }

/* ============ 锚点条 ============ */
.anchor-bar{
  position:sticky; top:0; z-index:40;
  background:var(--c-bg);
  border-bottom:1px solid var(--c-line);
}
.anchor-inner{
  display:flex; gap:10px; overflow-x:auto;
  padding:14px 0;
  scrollbar-width:none;
}
.anchor-inner::-webkit-scrollbar{ display:none; }
.anchor-link{
  flex:0 0 auto;
  padding:8px 18px; border-radius:var(--r-pill);
  background:var(--c-surface); border:1px solid var(--c-line);
  color:var(--t2); font-size:14px; font-weight:500;
  transition:all .18s ease; text-decoration:none; white-space:nowrap;
}
.anchor-link:hover{ border-color:var(--c-primary-l); color:var(--c-primary); text-decoration:none; }
.anchor-link.is-active{ background:var(--c-primary); border-color:var(--c-primary); color:#fff; }

/* ============ 网格辅助 ============ */
.grid-x{ display:flex; flex-flow:row wrap; }
.g-gap{ margin-left:-14px; margin-right:-14px; }
.g-gap > .cell{ padding-left:14px; padding-right:14px; margin-bottom:28px; }
.g-gap.no-mb > .cell{ margin-bottom:0; }

/* ============ 快速定位 ============ */
.quick-wrap{ display:flex; flex-wrap:wrap; gap:40px; align-items:flex-start; }
.quick-left{ flex:1 1 360px; }
.quick-left h2{ margin-bottom:16px; }
.quick-left p{ color:var(--t2); }
.stat-row{ display:flex; gap:36px; margin-top:26px; flex-wrap:wrap; }
.stat-item .stat-num{ font-size:32px; font-weight:700; color:var(--c-warm); line-height:1.2; }
.stat-item .stat-label{ font-size:13.5px; color:var(--t3); margin-top:2px; }
.quick-right{ flex:1 1 420px; display:flex; flex-direction:column; gap:12px; }
.quick-item{
  display:flex; gap:14px; align-items:flex-start;
  background:var(--c-surface); border:1px solid var(--c-line);
  border-radius:var(--r-sm); padding:16px 18px;
  transition:border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}
.quick-item:hover{ transform:translateY(-3px); border-color:var(--c-primary-50); box-shadow:var(--sh-2); }
.quick-item .qi-icon{
  width:34px; height:34px; flex:0 0 34px; border-radius:9px;
  background:var(--c-primary-50); color:var(--c-primary);
  display:flex; align-items:center; justify-content:center; font-size:15px;
}
.quick-item h3{ font-size:16px; margin-bottom:3px; }
.quick-item p{ font-size:14px; color:var(--t2); margin:0; }
.quick-item.no-cover:hover{ border-color:var(--c-primary-50); }

/* ============ 卡片瀑布 ============ */
.waterfall{ display:flex; flex-wrap:wrap; gap:28px; }
.wf-col{ flex:1 1 380px; display:flex; flex-direction:column; gap:28px; }
.res-card{
  background:var(--c-surface);
  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;
  display:flex; flex-direction:column;
}
.res-card:hover{ transform:translateY(-3px); box-shadow:var(--sh-2); border-color:var(--c-primary-50); }
.res-card .res-cover{ position:relative; }
.res-card .res-cover img{ width:100%; object-fit:cover; }
.res-cover-h img{ height:230px; }
.res-cover-s img{ height:160px; }
.res-badge{ position:absolute; left:14px; top:14px; }
.res-body{ padding:22px; display:flex; flex-direction:column; gap:10px; flex:1; }
.res-body h3{ font-size:18.5px; }
.res-body > p{ font-size:14.5px; color:var(--t2); }
.res-list{ display:flex; flex-direction:column; gap:8px; margin-top:2px; }
.res-list li{ position:relative; padding-left:20px; font-size:14.5px; color:var(--t2); }
.res-list li::before{
  content:""; position:absolute; left:4px; top:.66em;
  width:6px; height:6px; border-radius:50%; background:var(--c-accent);
}
.res-foot{ margin-top:auto; padding-top:12px; display:flex; align-items:center; justify-content:space-between; border-top:1px solid var(--c-line); }
.res-foot .meta{ font-size:13px; color:var(--t3); }
.res-foot a{ font-size:14px; font-weight:600; }
.res-foot a i{ font-size:12px; margin-left:5px; transition:transform .18s ease; display:inline-block; }
.res-card:hover .res-foot a i{ transform:translateX(3px); }

/* ============ 表格 ============ */
.table-scroll{ overflow-x:auto; border:1px solid var(--c-line); border-radius:var(--r-card); background:var(--c-surface); }
table.spec-table{ width:100%; min-width:720px; border-collapse:collapse; font-size:14.5px; }
table.spec-table th{
  background:var(--c-primary-50); color:var(--c-primary-d);
  font-weight:600; font-size:14px; text-align:left;
  padding:15px 20px; white-space:nowrap;
}
table.spec-table td{
  padding:15px 20px; border-top:1px solid var(--c-line); color:var(--t2); vertical-align:top;
}
table.spec-table td:first-child{ color:var(--t1); font-weight:600; white-space:nowrap; }
table.spec-table tbody tr:hover{ background:#FAFCFE; }
.cell-chip{
  display:inline-block; padding:2px 10px; border-radius:var(--r-pill);
  background:var(--c-bg-alt); color:var(--t2); font-size:12.5px; margin-right:6px; margin-bottom:4px;
}

/* ============ FAQ ============ */
.faq-group{ margin-bottom:34px; }
.faq-group:last-child{ margin-bottom:0; }
.faq-group-title{ display:flex; align-items:center; gap:10px; margin-bottom:16px; }
.faq-group-title i{ color:var(--c-accent); font-size:16px; }
.faq-panel{ display:flex; flex-direction:column; gap:12px; }
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-img);
  overflow:hidden;
  transition:border-color .18s ease, box-shadow .18s ease;
}
.faq-item.is-open{ border-color:var(--c-primary-50); box-shadow:var(--sh-1); }
.faq-q{
  width:100%; display:flex; align-items:flex-start; justify-content:space-between; gap:16px;
  padding:18px 22px; text-align:left;
  font-size:17px; font-weight:600; color:var(--t1);
  position:relative;
}
.faq-q:hover{ color:var(--c-primary-d); }
.faq-item.is-open .faq-q::before{
  content:""; position:absolute; left:0; top:14px; bottom:14px; width:3px;
  border-radius:0 3px 3px 0; background:var(--c-primary);
}
.faq-icon{
  position:relative; width:22px; height:22px; flex:0 0 22px; margin-top:3px;
  border-radius:6px; background:var(--c-primary-50);
  transition:background .18s ease;
}
.faq-icon::before,.faq-icon::after{
  content:""; position:absolute; left:50%; top:50%; background:var(--c-primary);
  transform:translate(-50%,-50%); border-radius:2px; transition:transform .22s ease, opacity .22s ease;
}
.faq-icon::before{ width:11px; height:2px; }
.faq-icon::after{ width:2px; height:11px; }
.faq-item.is-open .faq-icon{ background:var(--c-primary); }
.faq-item.is-open .faq-icon::before{ background:#fff; }
.faq-item.is-open .faq-icon::after{ opacity:0; transform:translate(-50%,-50%) rotate(90deg); }
.faq-a{
  max-height:0; overflow:hidden;
  transition:max-height .28s ease;
}
.faq-a-inner{ padding:0 22px 20px 22px; }
.faq-a-inner p{ font-size:15px; line-height:1.85; color:var(--t2); }
.faq-a-inner .tip{
  margin-top:10px; padding:12px 16px; border-radius:var(--r-sm);
  background:var(--c-bg-alt); border-left:3px solid var(--c-primary);
  font-size:14px; color:var(--t2);
}

/* ============ 提交表单 ============ */
.submit-wrap{ display:flex; flex-wrap:wrap; gap:44px; }
.submit-left{ flex:1 1 340px; }
.submit-left h2{ margin-bottom:14px; }
.submit-left > p{ color:var(--t2); }
.check-list{ display:flex; flex-direction:column; gap:12px; margin-top:24px; }
.check-list li{ display:flex; gap:12px; align-items:flex-start; font-size:15px; color:var(--t2); }
.check-list i{ color:var(--c-accent); font-size:15px; margin-top:4px; }
.form-card{
  flex:1 1 420px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh-1);
}
.field{ margin-bottom:18px; }
.field label{ display:block; font-size:13px; color:var(--t2); margin-bottom:7px; }
.field input[type="text"],
.field input[type="email"],
.field select{
  width:100%; height:48px; padding:0 15px;
  border:1px solid var(--c-line); border-radius:var(--r-sm);
  background:#fff; color:var(--t1);
  transition:border-color .18s ease, box-shadow .18s ease;
}
.field select{ appearance:none; background-image:linear-gradient(45deg,transparent 50%,var(--t3) 50%),linear-gradient(135deg,var(--t3) 50%,transparent 50%); background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px; background-size:6px 6px,6px 6px; background-repeat:no-repeat; }
.field input:focus, .field select:focus{
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(18,160,138,.22);
  outline:none;
}
.field .hint{ font-size:13px; color:var(--t3); margin-top:6px; }
.form-note{ font-size:13px; color:var(--t3); margin-top:14px; }
.form-feedback{ font-size:14px; color:#0B7E6C; margin-top:12px; display:none; }
.form-feedback.is-show{ display:block; }

/* ============ CTA ============ */
.cta-panel{
  background:var(--c-primary);
  border-radius:20px;
  padding:46px 44px;
  display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:32px;
  color:#fff;
  box-shadow:var(--sh-2);
}
.cta-panel h2{ color:#fff; margin-bottom:10px; }
.cta-panel p{ color:rgba(255,255,255,.82); font-size:15px; max-width:560px; margin:0; }
.cta-form{ display:flex; gap:12px; flex-wrap:wrap; }
.cta-form input{
  height:48px; min-width:250px; flex:1 1 250px; padding:0 15px;
  border:1px solid rgba(255,255,255,.35);
  background:rgba(255,255,255,.12);
  color:#fff; border-radius:var(--r-sm);
}
.cta-form input::placeholder{ color:rgba(255,255,255,.6); }
.cta-form input:focus{ outline:none; border-color:#fff; background:rgba(255,255,255,.2); }
.cta-form .btn-primary{ background:#fff; color:var(--c-primary); box-shadow:none; }
.cta-form .btn-primary:hover{ background:#EDF4FC; color:var(--c-primary-d); }

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-footer);
  color:#fff;
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  max-width:1120px; margin:0 auto; padding:0 var(--gutter);
  display:grid; grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:40px;
}
.footer-brand{ display:flex; align-items:center; gap:10px; margin-bottom:14px; }
.footer-mark{
  width:34px; height:34px; border-radius:10px;
  background:rgba(255,255,255,.12);
  display:flex; align-items:center; justify-content:center;
  font-weight:700; font-size:15px; color:#fff;
}
.footer-brand strong{ font-size:15px; color:#fff; }
.footer-desc{ font-size:14px; color:rgba(255,255,255,.7); line-height:1.8; }
.footer-col h4{ font-size:14px; color:#fff; margin-bottom:16px; font-weight:600; }
.footer-col ul{ display:flex; flex-direction:column; gap:10px; }
.footer-col li{ font-size:14px; color:rgba(255,255,255,.7); }
.footer-col a{ color:rgba(255,255,255,.7); font-size:14px; }
.footer-col a:hover{ color:var(--c-accent); text-decoration:none; }
.footer-cta-box p{ font-size:14px; color:rgba(255,255,255,.7); margin-bottom:14px; }
.footer-bottom{
  margin-top:52px; border-top:1px solid rgba(255,255,255,.12);
  padding:22px var(--gutter);
  max-width:1120px; margin-left:auto; margin-right:auto;
  display:flex; flex-wrap:wrap; gap:12px; justify-content:space-between;
  font-size:13px; color:rgba(255,255,255,.6);
}
.footer-bottom a{ color:rgba(255,255,255,.72); }
.footer-bottom a:hover{ color:var(--c-accent); text-decoration:none; }

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed; right:24px; bottom:24px;
  width:44px; height:44px; border-radius:50%;
  background:var(--c-surface); border:1px solid var(--c-line);
  color:var(--c-primary); box-shadow:var(--sh-2);
  display:flex; align-items:center; justify-content:center;
  opacity:0; visibility:hidden; transform:translateY(8px);
  transition:all .22s ease; z-index:50;
}
.to-top.is-show{ opacity:1; visibility:visible; transform:translateY(0); }
.to-top:hover{ background:var(--c-primary); color:#fff; border-color:var(--c-primary); }

/* ============ 响应式 ============ */
@media (max-width:1439px){
  h1{ font-size:34px; }
  .page-hero h1{ font-size:34px; }
}
@media (max-width:1023px){
  :root{ --sec-y:64px; --gutter:24px; }
  .mobile-bar{ display:flex; }
  .app-sidebar{
    transform:translateX(-100%);
    transition:transform .26s ease;
    width:280px;
    box-shadow:var(--sh-3);
  }
  .app-sidebar.is-open{ transform:translateX(0); }
  .app-main{ padding-top:56px; }
  .anchor-bar{ top:56px; }
  .page-hero h1{ font-size:30px; }
  .footer-grid{ grid-template-columns:1fr 1fr; gap:32px; }
  .quick-wrap{ gap:28px; }
  .submit-wrap{ gap:30px; }
  .cta-panel{ padding:36px 28px; }
}
@media (max-width:767px){
  :root{ --sec-y:48px; --gutter:16px; }
  body{ font-size:16px; line-height:1.8; }
  h1{ font-size:26px; }
  h2{ font-size:22px; }
  h3{ font-size:18px; }
  .page-hero{ min-height:auto; padding:40px 0; }
  .page-hero h1{ font-size:26px; }
  .page-hero .hero-sub{ font-size:16px; }
  .hero-actions .btn{ flex:1 1 100%; }
  .sec-head-row{ flex-direction:column; align-items:flex-start; gap:12px; }
  .wf-col{ flex:1 1 100%; }
  .res-body{ padding:18px; }
  .res-cover-h img{ height:190px; }
  .faq-q{ padding:16px 18px; font-size:16px; }
  .faq-a-inner{ padding:0 18px 18px 18px; }
  .form-card{ padding:20px; }
  .footer-grid{ grid-template-columns:1fr; gap:28px; }
  .footer-bottom{ flex-direction:column; }
  .cta-form{ width:100%; }
  .cta-form input{ min-width:100%; }
  .cta-form .btn{ width:100%; }
  .to-top{ right:16px; bottom:16px; }
}