/* roulang page: index */
:root{
  --primary:#F4511E;
  --primary-deep:#C93A0E;
  --ink:#0B3B36;
  --accent:#12C2A0;
  --warn:#E8A33D;
  --danger:#D2402B;
  --page:#FAF7F2;
  --band:#F3EEE6;
  --card:#FFFFFF;
  --line:#E7DFD3;
  --text:#33312E;
  --text-muted:#6E6A63;
  --radius-lg:24px;
  --radius-md:20px;
  --shadow-sm:0 2px 8px rgba(11,59,54,.06);
  --shadow-lg:0 16px 40px -12px rgba(244,81,30,.28);
  --grad:linear-gradient(100deg,#F4511E 0%,#FF7A3C 46%,#12C2A0 132%);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  background:var(--page);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-0.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
.num{font-variant-numeric:tabular-nums;}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.grad-bg{background:var(--grad);}
.divider{height:1px;background:var(--line);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(250,247,242,.9);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(11,59,54,.35);background:rgba(250,247,242,.96);}
.nav-bar{
  height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:height .22s ease;
}
.site-header.is-scrolled .nav-bar{height:56px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:34px;height:34px;border-radius:12px;display:grid;place-items:center;background:var(--grad);box-shadow:var(--shadow-sm);}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  font-size:15px;color:var(--text);border-radius:999px;transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--primary);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;border-radius:999px;border:1.5px solid var(--line);background:#fff;
  display:grid;place-items:center;color:var(--ink);transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.icon-btn:hover{border-color:var(--primary);color:var(--primary);}
.icon-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease,background .3s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad);background-size:160% 100%;color:#fff;box-shadow:0 10px 24px -14px rgba(244,81,30,.85);}
.btn-primary:hover{background-position:100% 0;transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.btn-primary:active{transform:translateY(1px);filter:saturate(.9);}
.btn-ghost{background:#fff;color:var(--ink);border:1.5px solid var(--line);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.btn[disabled]{opacity:.5;pointer-events:none;}
.link-more{color:var(--primary);font-size:14px;font-weight:600;border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease;}
.link-more:hover{color:var(--primary-deep);border-color:var(--primary-deep);}

/* 搜索展开条 */
.search-strip{
  max-height:0;overflow:hidden;transition:max-height .28s ease;border-top:1px solid transparent;
}
.search-strip.open{max-height:72px;border-top-color:var(--line);}
.search-strip .inner{display:flex;align-items:center;gap:12px;height:56px;}
.search-input{
  flex:1;height:44px;border-radius:16px;border:1.5px solid var(--line);background:#fff;
  padding:0 16px;font-size:15px;color:var(--text);outline:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.search-input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(244,81,30,.08);}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:120;background:rgba(11,59,54,.4);
  opacity:0;pointer-events:none;transition:opacity .25s ease;
}
.drawer.open{opacity:1;pointer-events:auto;}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(320px,86vw);height:100%;background:#fff;
  padding:20px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(100%);transition:transform .28s ease;overflow-y:auto;
}
.drawer.open .drawer-panel{transform:translateX(0);}
.drawer-link{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:16px;
  font-size:16px;color:var(--text);transition:background .2s ease,color .2s ease;
}
.drawer-link:hover,.drawer-link.active{background:rgba(18,194,160,.12);color:var(--ink);font-weight:600;}

/* 锚点 Tab 组 */
.anchor-bar{position:sticky;top:64px;z-index:70;background:rgba(250,247,242,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
.site-header.is-scrolled ~ .anchor-bar{top:56px;}
.anchor-tabs{display:flex;gap:8px;align-items:center;height:56px;overflow-x:auto;scrollbar-width:none;}
.anchor-tabs::-webkit-scrollbar{display:none;}
.anchor-tab{
  flex:0 0 auto;display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  font-size:14px;color:var(--text-muted);border:1px solid transparent;transition:all .2s ease;
}
.anchor-tab:hover{color:var(--ink);}
.anchor-tab.active{background:rgba(18,194,160,.12);color:var(--ink);border-color:rgba(18,194,160,.4);font-weight:600;}

/* ============ Hero ============ */
.hero{position:relative;padding:104px 0 72px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;top:-160px;right:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(244,81,30,.14),rgba(244,81,30,0) 68%);
  pointer-events:none;
}
.hero-arc{position:absolute;left:-60px;bottom:-40px;width:420px;opacity:.35;pointer-events:none;}
.hero-grid{display:grid;grid-template-columns:1fr;gap:44px;align-items:center;position:relative;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(18,194,160,.12);color:var(--ink);font-size:13px;font-weight:600;margin-bottom:18px;
}
.dot-pulse{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:pulse 1.8s infinite;}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(18,194,160,.6);}70%{box-shadow:0 0 0 8px rgba(18,194,160,0);}100%{box-shadow:0 0 0 0 rgba(18,194,160,0);}}
.hero h1{font-size:34px;line-height:1.25;font-weight:700;letter-spacing:-0.01em;}
.hero-sub{margin-top:18px;font-size:16px;color:var(--text-muted);max-width:520px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.trust-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px;}
.trust-badge{
  flex:1 1 130px;min-width:130px;background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:14px 16px;box-shadow:var(--shadow-sm);
}
.trust-badge .num{font-size:26px;font-weight:700;color:var(--ink);line-height:1.1;}
.trust-badge .unit{font-size:14px;color:var(--primary);font-weight:600;}
.trust-badge .cap{font-size:13px;color:var(--text-muted);margin-top:4px;}

.hero-visual{position:relative;}
.hero-img-wrap{position:relative;border-radius:24px;overflow:hidden;box-shadow:0 24px 60px -28px rgba(11,59,54,.5);}
.hero-img-wrap img{width:100%;height:340px;object-fit:cover;background:var(--band);}
.hero-img-wrap::after{
  content:"";position:absolute;inset:0;background:var(--grad);opacity:.12;mix-blend-mode:multiply;pointer-events:none;
}
.float-card{
  position:absolute;left:-14px;bottom:-24px;background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:16px 18px;box-shadow:0 18px 40px -20px rgba(11,59,54,.45);min-width:190px;
}
.float-card .k{font-size:12px;color:var(--text-muted);}
.float-card .v{font-size:24px;font-weight:700;color:var(--ink);line-height:1.2;}
.float-card .v span{font-size:13px;color:var(--accent);font-weight:600;}

/* ============ 板块通用 ============ */
.section{padding:72px 0;}
.section-band{background:var(--band);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:38px;}
.sec-index{
  display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:10px;
  background:var(--grad);color:#fff;font-size:14px;font-weight:700;margin-right:10px;
}
.section h2{font-size:26px;font-weight:700;display:flex;align-items:center;}
.section-lead{margin-top:8px;font-size:15px;color:var(--text-muted);}
.grid-2{display:grid;grid-template-columns:1fr;gap:22px;}
.grid-3{display:grid;grid-template-columns:1fr;gap:22px;}
.grid-4{display:grid;grid-template-columns:1fr;gap:22px;}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:24px;padding:26px;
  box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(244,81,30,.3);}
.icon-block{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
  background:var(--grad);color:#fff;
}
.card h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.card p{font-size:15px;color:var(--text-muted);line-height:1.8;}

/* 演示三屏 */
.demo-shots{display:grid;grid-template-columns:1fr;gap:20px;margin-bottom:40px;}
.shot{position:relative;border-radius:20px;overflow:hidden;border:1px solid rgba(11,59,54,.06);background:var(--band);}
.shot img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.shot .cap{
  position:absolute;left:14px;bottom:14px;padding:6px 12px;border-radius:999px;
  background:rgba(11,59,54,.78);color:#fff;font-size:13px;backdrop-filter:blur(4px);
}
.steps{display:grid;grid-template-columns:1fr;gap:20px;border-top:1px dashed var(--line);padding-top:32px;}
.step{display:flex;gap:14px;align-items:flex-start;}
.step-num{
  flex:0 0 auto;width:28px;height:28px;border-radius:9px;background:var(--grad);color:#fff;
  font-size:13px;font-weight:700;display:grid;place-items:center;
}
.step h4{font-size:16px;font-weight:600;margin-bottom:4px;}
.step p{font-size:14px;color:var(--text-muted);}

/* 证据 */
.stat-wall{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-bottom:40px;}
.stat-cell{
  border-radius:20px;padding:20px;background:rgba(18,194,160,.1);border:1px solid rgba(18,194,160,.22);
}
.stat-cell .num{font-size:28px;font-weight:700;color:var(--ink);line-height:1.15;}
.stat-cell .num span{font-size:14px;color:var(--accent);font-weight:600;margin-left:2px;}
.stat-cell .cap{font-size:13px;color:var(--text-muted);margin-top:6px;}
.quote-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:26px;box-shadow:var(--shadow-sm);}
.quote-card .q{font-size:16px;color:var(--ink);line-height:1.85;}
.quote-card .who{margin-top:16px;font-size:13px;color:var(--text-muted);}
.partner-strip{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;}
.partner-strip span{
  font-size:13px;color:var(--text-muted);border:1px dashed var(--line);border-radius:999px;padding:6px 14px;background:#fff;
}

/* 内容卡片（资讯/CMS） */
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:24px;
  overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(244,81,30,.3);}
.post-thumb{position:relative;background:var(--band);}
.post-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.post-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.tag{
  align-self:flex-start;display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(18,194,160,.12);color:var(--ink);font-size:13px;font-weight:600;
}
.post-card h3{font-size:18px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease;}
.post-card:hover h3{color:var(--primary);}
.post-card .excerpt{font-size:14px;color:var(--text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{margin-top:auto;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);}
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:24px;padding:46px 24px;text-align:center;color:var(--text-muted);
}

/* 价格 */
.price-grid{display:grid;grid-template-columns:1fr;gap:24px;align-items:stretch;}
.plan{position:relative;background:#fff;border:1px solid var(--line);border-radius:24px;padding:28px;display:flex;flex-direction:column;box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease;}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.plan.featured{border:2px solid transparent;background-image:linear-gradient(#fff,#fff),var(--grad);background-origin:border-box;background-clip:padding-box,border-box;box-shadow:0 20px 46px -22px rgba(244,81,30,.5);}
.plan-badge{
  position:absolute;top:-14px;right:22px;padding:5px 14px;border-radius:999px;background:var(--grad);color:#fff;font-size:12px;font-weight:700;
}
.plan h3{font-size:18px;font-weight:600;}
.plan .price{margin-top:14px;font-size:36px;font-weight:700;color:var(--ink);line-height:1.1;}
.plan .price small{font-size:14px;color:var(--text-muted);font-weight:400;margin-left:6px;}
.plan .desc{font-size:14px;color:var(--text-muted);margin-top:8px;}
.plan ul{margin:22px 0 26px;display:grid;gap:12px;}
.plan li{display:flex;gap:10px;font-size:15px;color:var(--text);align-items:flex-start;}
.plan li svg{flex:0 0 auto;margin-top:5px;}
.plan .btn{width:100%;margin-top:auto;}

/* FAQ */
.faq-list{display:grid;gap:14px;margin-top:34px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:24px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;}
.faq-item.open{border-color:rgba(244,81,30,.35);box-shadow:var(--shadow-sm);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;
  padding:22px 24px;font-size:17px;font-weight:600;color:var(--ink);
}
.faq-arrow{flex:0 0 auto;transition:transform .28s ease;color:var(--primary);}
.faq-item.open .faq-arrow{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq-a-inner{padding:0 24px 24px;font-size:15px;line-height:1.8;color:var(--text-muted);}

/* 底部 CTA */
.cta-band{
  border-radius:28px;background:var(--grad);color:#fff;padding:46px 34px;position:relative;overflow:hidden;
  box-shadow:0 26px 60px -30px rgba(244,81,30,.75);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:rgba(255,255,255,.14);
}
.cta-band h2{color:#fff;font-size:26px;}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.9);max-width:560px;}
.cta-band .btn{background:#fff;color:var(--ink);margin-top:26px;}
.cta-band .btn:hover{color:var(--primary-deep);}

/* 页脚 */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);margin-top:72px;position:relative;}
.site-footer::before{content:"";display:block;height:2px;background:var(--grad);}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px;padding:56px 0 40px;}
.footer-brand .brand-text{color:#fff;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.site-footer a{font-size:14px;color:rgba(255,255,255,.78);transition:color .2s ease;}
.site-footer a:hover{color:var(--accent);}
.footer-links{display:grid;gap:12px;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin-top:16px;max-width:320px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 88px;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6);
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.8);font-size:13px;}
.to-top:hover{color:var(--accent);}

/* 浮动 CTA */
.float-rail{
  position:fixed;right:22px;top:50%;transform:translateY(-50%) translateX(12px);
  z-index:90;display:none;flex-direction:column;gap:10px;opacity:0;pointer-events:none;
  transition:opacity .3s ease,transform .3s ease;
}
.float-rail.show{opacity:1;pointer-events:auto;transform:translateY(-50%) translateX(0);}
.float-rail .btn{writing-mode:vertical-rl;height:auto;padding:22px 12px;letter-spacing:.08em;font-size:14px;}
.float-rail .icon-btn{width:44px;height:44px;background:#fff;}
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:90;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);padding:8px 16px;display:flex;align-items:center;gap:12px;
  transform:translateY(110%);transition:transform .3s ease;
}
.mobile-cta.show{transform:translateY(0);}
.mobile-cta .btn{flex:1;}
.mobile-cta .small{font-size:12px;color:var(--text-muted);white-space:nowrap;}

@media (min-width:640px){
  .hero h1{font-size:38px;}
  .grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .demo-shots{grid-template-columns:repeat(3,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(3,minmax(0,1fr));}
  .stat-wall{grid-template-columns:repeat(3,minmax(0,1fr));}
  .plan.featured{transform:scale(1.02);}
}
@media (max-width:639px){
  .demo-shots{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:16px;padding-bottom:8px;}
  .demo-shots .shot{flex:0 0 86%;scroll-snap-align:center;}
  .plan.featured{order:-1;}
  .float-card{position:static;margin-top:14px;left:auto;bottom:auto;}
}
@media (min-width:1024px){
  .nav-links{display:flex;}
  .mobile-menu-btn{display:none;}
  .hero{padding:118px 0 84px;}
  .hero-grid{grid-template-columns:55fr 45fr;gap:56px;}
  .hero h1{font-size:40px;}
  .section{padding:96px 0;}
  .grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .price-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
  .float-rail{display:flex;}
  .mobile-cta{display:none;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
}

/* roulang page: article */
:root{
  --primary:#F4511E;
  --primary-deep:#C93A0E;
  --ink:#0B3B36;
  --accent:#12C2A0;
  --warn:#E8A33D;
  --danger:#D2402B;
  --page:#FAF7F2;
  --band:#F3EEE6;
  --card:#FFFFFF;
  --line:#E7DFD3;
  --text:#33312E;
  --muted:#6E6A63;
  --grad:linear-gradient(100deg,#F4511E 0%,#FF7A3C 46%,#12C2A0 132%);
  --r-card:24px;
  --r-img:20px;
  --shadow:0 2px 8px rgba(11,59,54,.06);
  --shadow-hover:0 16px 40px -12px rgba(244,81,30,.28);
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--page);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--primary)}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(250,247,242,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 24px -14px rgba(11,59,54,.35)}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;height:64px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:12px;background:var(--grad);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
  box-shadow:0 6px 16px -8px rgba(244,81,30,.7);
}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink);
  padding:8px 0;display:inline-flex;align-items:center;min-height:44px;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:6px;height:2px;width:0;
  background:var(--primary);border-radius:2px;transition:width var(--ease),bottom var(--ease);
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{width:100%;bottom:3px}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{width:100%;background:var(--primary)}
.header-right{display:flex;align-items:center;gap:18px}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:44px;height:44px;border-radius:999px;border:1.5px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink);
  background:#fff;transition:all var(--ease);
}
.icon-btn:hover{border-color:var(--primary);color:var(--primary);box-shadow:var(--shadow)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:14px;border:1.5px solid var(--line);align-items:center;justify-content:center;color:var(--ink);background:#fff}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;transition:transform var(--ease)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{transform:rotate(45deg);top:0}
.nav-toggle.is-open span::after{transform:rotate(-45deg);top:0}
.search-bar{
  display:none;border-top:1px solid var(--line);background:#fff;
}
.search-bar.open{display:block}
.search-bar .inner{display:flex;gap:12px;align-items:center;padding:10px 0}
.search-bar input{
  flex:1;height:48px;border-radius:20px;border:1.5px solid var(--line);
  padding:0 18px;font-size:15px;color:var(--text);background:var(--page);
  transition:all var(--ease);
}
.search-bar input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(244,81,30,.08)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px -10px rgba(244,81,30,.75)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px -12px rgba(244,81,30,.8);background-position:20% 0}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;color:var(--ink);border:1.5px solid var(--line)}
.btn-ghost:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-light{background:#fff;color:var(--ink);border:0}
.btn-light:hover{color:var(--primary);transform:translateY(-2px)}
.btn-link{color:var(--primary);font-weight:600;font-size:14px;text-decoration:underline;text-underline-offset:4px}
.btn-link:hover{color:var(--primary-deep)}

/* ============ 面包屑与文章头部 ============ */
.article-hero{padding:28px 0 6px}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#C9C1B4}
.breadcrumb .current{color:var(--ink);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{
  font-size:40px;line-height:1.25;font-weight:700;color:var(--ink);
  margin:20px 0 18px;max-width:920px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--muted)}
.badge-cat{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  background:rgba(18,194,160,.14);color:var(--ink);font-size:13px;font-weight:600;
}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#CFC7BA}

.cover-wrap{margin:26px 0 0}
.cover-wrap img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--r-card);background:var(--band);
  border:1px solid rgba(231,223,211,.9);
}

/* ============ 正文布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);
  gap:44px;padding:44px 0 80px;
}
.article-main{min-width:0}
.article-body{
  max-width:752px;margin:0 auto;
  font-size:17px;line-height:1.9;color:var(--text);
}
.article-body p{margin:0 0 1.4em}
.article-body h2{
  font-size:24px;line-height:1.45;margin:44px 0 18px;padding-left:14px;
  border-left:4px solid var(--primary);
}
.article-body h3{font-size:20px;font-weight:600;margin:32px 0 14px}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 12px}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:8px}
.article-body blockquote{
  margin:26px 0;padding:16px 22px;background:var(--band);
  border-left:4px solid var(--primary);border-radius:0 16px 16px 0;color:var(--ink);
}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
.article-body img{border-radius:var(--r-img);margin:24px auto;border:1px solid rgba(231,223,211,.9)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;margin:22px 0;
  border-radius:16px;overflow:hidden;
}
.article-body th,.article-body td{padding:12px 14px;border:1px solid var(--line);text-align:left}
.article-body th{background:var(--band);color:var(--ink);font-weight:600}
.article-body tr:nth-child(even) td{background:#FCFAF7}
.article-body pre{
  background:var(--ink);color:#fff;border-radius:16px;padding:18px 20px;
  overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;
}
.article-body code{font-variant-numeric:tabular-nums}
.article-body hr{border:0;border-top:1px dashed var(--line);margin:36px 0}

/* 空状态 */
.empty-state{
  max-width:640px;margin:0 auto;text-align:center;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);padding:48px 28px;box-shadow:var(--shadow);
}
.empty-state h2{font-size:22px;margin-bottom:12px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:22px}

/* ============ 标签与分享 ============ */
.post-foot{
  max-width:752px;margin:48px auto 0;padding-top:26px;
  border-top:1px dashed var(--line);
  display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:13px;color:var(--muted);
  transition:all var(--ease);
}
.tag:hover{border-color:var(--primary);color:var(--primary)}
.share-row{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.share-btn{
  width:40px;height:40px;border-radius:999px;border:1px solid var(--line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink);transition:all var(--ease);
}
.share-btn:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow)}
.back-row{max-width:752px;margin:32px auto 0}

/* ============ 侧栏 ============ */
.side-col{display:none}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow);
}
.side-card + .side-card{margin-top:20px}
.side-title{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:16px;display:flex;align-items:center;gap:8px}
.side-title::before{content:"";width:6px;height:16px;border-radius:999px;background:var(--grad)}
.side-list li + li{border-top:1px dashed var(--line)}
.side-list a{
  display:block;padding:12px 0;font-size:14px;color:var(--text);line-height:1.6;
}
.side-list a:hover{color:var(--primary)}
.side-list .hint{display:block;font-size:12px;color:var(--muted);margin-top:4px}
.side-cta{
  background:var(--ink);color:#fff;border-radius:var(--r-card);padding:24px;margin-top:20px;
  position:relative;overflow:hidden;
}
.side-cta::after{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad);
}
.side-cta h3{color:#fff;font-size:17px;margin-bottom:8px}
.side-cta p{font-size:13px;color:rgba(255,255,255,.72);margin-bottom:16px;line-height:1.7}

/* ============ 相关推荐 ============ */
.related{padding:8px 0 84px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:28px}
.section-head .sub{font-size:14px;color:var(--muted);margin-top:8px}
.card-grid{display:grid;grid-template-columns:1fr;gap:24px}
.post-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(244,81,30,.3)}
.post-card .thumb{position:relative;overflow:hidden}
.post-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--band);border-radius:0;transition:transform 400ms ease-out}
.post-card:hover .thumb img{transform:scale(1.04)}
.post-card .body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-card h3{font-size:18px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card:hover h3{color:var(--primary)}
.post-card p{font-size:14px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card .meta{font-size:13px;color:var(--muted);display:flex;gap:10px;align-items:center;margin-top:auto}

/* ============ CTA 带 ============ */
.cta-band{background:var(--grad);padding:64px 0;position:relative;overflow:hidden}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.9);font-size:15px;max-width:520px}
.cta-ring{
  position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  border:1px solid rgba(255,255,255,.25);pointer-events:none;
}

/* ============ 浮动 CTA ============ */
.float-rail{
  position:fixed;right:22px;top:50%;transform:translateY(-50%);
  display:none;flex-direction:column;gap:12px;z-index:70;
  opacity:0;pointer-events:none;transition:opacity 300ms ease-out;
}
.float-rail.show{opacity:1;pointer-events:auto}
.float-btn{
  width:56px;height:56px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);color:var(--ink);box-shadow:var(--shadow);
  transition:all var(--ease);font-size:13px;
}
.float-btn.main{background:var(--grad);color:#fff;border:0;box-shadow:0 12px 26px -12px rgba(244,81,30,.85)}
.float-btn:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.float-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:flex;align-items:center;gap:12px;
  padding:8px 16px 10px;background:rgba(250,247,242,.96);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);transform:translateY(110%);transition:transform 300ms ease-out;
}
.float-bar.show{transform:translateY(0)}
.float-bar .btn{flex:1}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.78);position:relative;padding-bottom:72px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad)}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:36px;padding:60px 0 40px;
}
.footer-brand .brand-text{color:#fff}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.65);margin-top:16px;max-width:320px}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a,.footer-links span{font-size:14px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  padding-top:22px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:rgba(255,255,255,.6);
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.75);min-height:44px}
.to-top:hover{color:var(--accent)}

/* ============ 响应式 ============ */
@media (min-width:640px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .header-right{
    position:fixed;top:64px;left:0;right:0;bottom:auto;
    flex-direction:column;align-items:stretch;gap:8px;
    background:#fff;border-bottom:1px solid var(--line);
    padding:14px 20px 22px;box-shadow:0 18px 40px -22px rgba(11,59,54,.4);
    display:none;max-height:calc(100vh - 64px);overflow-y:auto;
  }
  .header-right.open{display:flex}
  .nav-links{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{min-height:52px;font-size:16px;border-bottom:1px dashed var(--line);justify-content:space-between}
  .nav-link::after{display:none}
  .nav-link.active{color:var(--primary)}
  .header-actions{padding-top:12px}
  .header-actions .btn{flex:1}
  .float-bar{padding-bottom:calc(10px + env(safe-area-inset-bottom))}
}
@media (max-width:639px){
  .header-inner{height:56px}
  .header-right{top:56px;max-height:calc(100vh - 56px)}
  .article-title{font-size:30px}
  .article-hero{padding-top:20px}
  .cover-wrap img{border-radius:20px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:21px;margin-top:36px}
  .section-head h2{font-size:23px}
  .cta-band h2{font-size:23px}
  .cta-band{padding:52px 0}
  .post-foot{flex-direction:column;align-items:flex-start}
}
@media (min-width:1024px){
  .header-inner{height:64px}
  .card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}
  .float-rail{display:flex}
}
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px}
  .side-col{display:block}
  .side-col .sticky{position:sticky;top:96px}
}
@media (min-width:1024px){
  .float-bar{display:none}
}

/* roulang page: category1 */
:root{
  --primary:#F4511E;
  --primary-deep:#C93A0E;
  --ink:#0B3B36;
  --accent:#12C2A0;
  --warn:#E8A33D;
  --danger:#D2402B;
  --page:#FAF7F2;
  --band:#F3EEE6;
  --card:#FFFFFF;
  --line:#E7DFD3;
  --text:#33312E;
  --muted:#6E6A63;
  --grad:linear-gradient(100deg,#F4511E 0%,#FF7A3C 46%,#12C2A0 132%);
  --shadow-sm:0 2px 8px rgba(11,59,54,.06);
  --shadow-lg:0 16px 40px -12px rgba(244,81,30,.28);
  --r-card:24px;
  --r-img:20px;
  --r-field:20px;
  --header-h:64px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--page);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);object-fit:cover;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;}

.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}

/* ============ 品牌标识 ============ */
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px;}
.brand-mark{
  width:34px;height:34px;border-radius:12px;background:var(--grad);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px -6px rgba(244,81,30,.5);flex:0 0 auto;
}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(250,247,242,.92);
  border-bottom:1px solid transparent;
  transition:background .2s ease-out,border-color .2s ease-out,backdrop-filter .2s ease-out;
}
.site-header.scrolled{
  background:rgba(250,247,242,.86);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom-color:var(--line);
}
.site-header::after{
  content:"";display:block;height:1px;width:100%;
  background:var(--grad);opacity:.35;
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:var(--header-h);transition:height .2s ease-out;
}
.site-header.scrolled .header-inner{height:56px;}
.nav-left{display:flex;align-items:center;gap:28px;min-width:0;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 12px;
  font-size:15px;color:var(--text);border-radius:12px;
  transition:color .18s ease-out,background-color .18s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease-out;
}
.nav-link:hover{color:var(--primary);background:rgba(244,81,30,.06);}
.nav-link:hover::after{transform:scaleX(1);height:3px;}
.nav-link.active{color:var(--primary);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;}
.search-toggle{
  display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;
  border:1.5px solid var(--line);border-radius:var(--r-pill,999px);background:#fff;
  font-size:14px;color:var(--muted);transition:all .18s ease-out;
}
.search-toggle:hover{border-color:var(--primary);color:var(--primary);}
.menu-toggle{
  display:none;align-items:center;justify-content:center;width:44px;height:44px;
  border:1.5px solid var(--line);border-radius:14px;background:#fff;
}
.menu-toggle:hover{border-color:var(--primary);}

.search-bar{
  max-height:0;overflow:hidden;border-top:0 solid var(--line);
  transition:max-height .26s ease-out;
  background:rgba(243,238,230,.7);
}
.search-bar.open{max-height:96px;border-top:1px solid var(--line);}
.search-inner{display:flex;align-items:center;gap:12px;height:64px;}
.search-inner input{
  flex:1;height:48px;border-radius:var(--r-field);border:1.5px solid var(--line);
  background:#fff;padding:0 18px;font-size:15px;color:var(--text);
}
.search-inner input::placeholder{color:var(--muted);}
.search-inner input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(244,81,30,.08);}

.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:var(--page);
}
.mobile-drawer.open{display:block;}
.mobile-drawer nav{display:flex;flex-direction:column;padding:8px 0 16px;}
.mobile-drawer a{
  display:flex;align-items:center;min-height:48px;padding:0 4px;font-size:16px;
  border-bottom:1px dashed var(--line);color:var(--text);
}
.mobile-drawer a.active{color:var(--primary);font-weight:600;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform .18s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,saturate .2s;
  white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px -12px rgba(244,81,30,.75);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);filter:brightness(1.03);}
.btn-primary:active{transform:translateY(1px);filter:saturate(.9);}
.btn-ghost{background:#fff;color:var(--ink);border:1.5px solid var(--line);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-white{background:#fff;color:var(--ink);}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 14px 32px -14px rgba(11,59,54,.5);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1.5px;
  transition:color .18s ease-out,gap .18s ease-out;
}
.link-arrow:hover{color:var(--primary-deep);gap:10px;}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-band{background:var(--band);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(18,194,160,.12);color:var(--ink);font-size:13px;font-weight:600;
}
.eyebrow-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
h1{font-size:40px;line-height:1.25;font-weight:700;letter-spacing:-.01em;color:var(--ink);}
h2{font-size:28px;line-height:1.3;font-weight:700;letter-spacing:-.01em;color:var(--ink);}
h3{font-size:20px;font-weight:600;color:var(--ink);line-height:1.45;}
h4{font-size:15px;font-weight:600;}
.lead{font-size:15px;color:var(--muted);line-height:1.75;}
.section-head .lead{margin-top:12px;font-size:16px;}
.rule{height:1px;background:var(--line);border:0;margin:0;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;padding:72px 0 88px;
  background:
    radial-gradient(1000px 480px at 88% -10%,rgba(18,194,160,.16),transparent 62%),
    radial-gradient(880px 460px at -6% 0%,rgba(244,81,30,.14),transparent 60%),
    var(--page);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='560' height='320' viewBox='0 0 560 320'><g fill='none' stroke='%23F4511E' stroke-opacity='0.2' stroke-width='1'><path d='M-40 300 A340 340 0 0 1 600 300'/><path d='M-10 320 A310 310 0 0 1 570 320'/></g></svg>");
  background-repeat:no-repeat;background-position:right -140px bottom -30px;
  opacity:.5;
}
.hero-grid{position:relative;display:grid;grid-template-columns:55fr 45fr;gap:56px;align-items:center;}
.hero-copy h1{margin-top:18px;}
.hero-sub{margin-top:18px;font-size:17px;color:var(--muted);max-width:34em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.trust-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px;}
.trust-item{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 20px;
  box-shadow:var(--shadow-sm);min-width:132px;
}
.trust-num{font-size:26px;font-weight:700;color:var(--ink);line-height:1.1;}
.trust-unit{font-size:14px;font-weight:600;color:var(--primary);margin-left:2px;}
.trust-label{font-size:13px;color:var(--muted);margin-top:2px;}

.hero-visual{position:relative;}
.hero-visual img{
  width:100%;height:396px;border-radius:var(--r-card);border:1px solid var(--line);
  box-shadow:0 24px 60px -28px rgba(11,59,54,.45);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-card);
  background:linear-gradient(100deg,rgba(244,81,30,.12),rgba(18,194,160,.12));
  pointer-events:none;mix-blend-mode:multiply;
}
.hero-float{
  position:absolute;left:-14px;bottom:-22px;background:#fff;border:1px solid var(--line);
  border-radius:18px;padding:14px 18px;box-shadow:var(--shadow-lg);z-index:2;
}
.hero-float .k{font-size:13px;color:var(--muted);}
.hero-float .v{font-size:22px;font-weight:700;color:var(--ink);line-height:1.2;}
.hero-float .v span{font-size:13px;color:var(--accent);font-weight:600;margin-left:6px;}

/* ============ 面包屑 ============ */
.crumb{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.crumb a{color:var(--muted);transition:color .18s;}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:#c9c0b2;}

/* ============ 标签筛选条 ============ */
.chip-bar{display:flex;gap:10px;overflow-x:auto;padding:4px 0 10px;scrollbar-width:thin;}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;height:40px;padding:0 18px;
  border-radius:999px;border:1.5px solid var(--line);background:#fff;font-size:14px;color:var(--muted);
  transition:all .18s ease-out;
}
.chip:hover{border-color:var(--primary);color:var(--primary);}
.chip.active{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 10px 22px -12px rgba(244,81,30,.8);}
.chip.accent{background:rgba(18,194,160,.12);border-color:rgba(18,194,160,.4);color:var(--ink);}

/* ============ 卡片 ============ */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  display:flex;flex-direction:column;height:100%;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(244,81,30,.3);}
.card p{font-size:15px;color:var(--muted);line-height:1.75;margin-top:10px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}

.icon-tile{
  width:44px;height:44px;border-radius:14px;background:var(--grad);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:18px;
  box-shadow:0 10px 20px -12px rgba(244,81,30,.9);
}
.icon-tile svg{stroke:#fff;}

/* ============ 场景列表 ============ */
.scene-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.scene-list{display:flex;flex-direction:column;gap:0;}
.scene-item{
  display:flex;gap:16px;padding:20px 0;border-bottom:1px dashed var(--line);
}
.scene-item:first-child{padding-top:0;}
.scene-item:last-child{border-bottom:0;padding-bottom:0;}
.scene-num{
  flex:0 0 auto;width:28px;height:28px;border-radius:9px;background:var(--grad);
  color:#fff;font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
}
.scene-item h3{font-size:17px;}
.scene-item p{margin-top:6px;font-size:14.5px;color:var(--muted);}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px;}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;
  box-shadow:var(--shadow-sm);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(244,81,30,.3);}
.step-badge{
  width:34px;height:34px;border-radius:11px;background:var(--grad);color:#fff;
  font-size:14px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
  margin-bottom:16px;
}
.step h3{font-size:17px;}
.step p{margin-top:8px;font-size:14.5px;color:var(--muted);}

/* ============ 数据条 ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 28px;box-shadow:var(--shadow-sm);
}
.stat b{display:block;font-size:30px;font-weight:700;color:var(--ink);line-height:1.15;}
.stat b i{font-style:normal;font-size:14px;color:var(--primary);margin-left:4px;}
.stat span{font-size:13px;color:var(--muted);display:block;margin-top:4px;}

/* ============ 截图演示 ============ */
.shots{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.shot{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:14px;box-shadow:var(--shadow-sm);}
.shot img{width:100%;height:196px;border-radius:16px;border:1px solid var(--line);}
.shot .cap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 6px 6px;}
.shot .cap strong{font-size:15px;color:var(--ink);}
.shot .cap span{font-size:13px;color:var(--muted);}

/* ============ FAQ ============ */
.faq-list{max-width:860px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:18px;margin-bottom:14px;
  overflow:hidden;transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.faq-item.open{border-color:rgba(244,81,30,.35);box-shadow:var(--shadow-sm);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:60px;padding:18px 24px;text-align:left;font-size:17px;font-weight:600;color:var(--ink);
}
.faq-q:hover{color:var(--primary);}
.faq-q .arrow{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1.5px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;transition:transform .25s ease-out,background-color .2s,border-color .2s;
}
.faq-item.open .faq-q .arrow{transform:rotate(180deg);background:var(--primary);border-color:var(--primary);}
.faq-item.open .faq-q .arrow svg{stroke:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out;}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--muted);}

/* ============ 提示条 ============ */
.notice{
  display:flex;gap:14px;align-items:flex-start;background:rgba(232,163,61,.12);
  border:1px solid rgba(232,163,61,.4);border-radius:18px;padding:18px 22px;margin-top:32px;
}
.notice svg{flex:0 0 auto;margin-top:2px;stroke:#C9821B;}
.notice p{font-size:14.5px;color:#7A5A16;line-height:1.7;}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--grad);color:#fff;border-radius:0;padding:72px 0;
}
.cta-band h2{color:#fff;font-size:30px;}
.cta-band p{color:rgba(255,255,255,.9);margin-top:12px;font-size:16px;max-width:46em;}
.cta-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;top:50%;transform:translateY(-50%);
  display:flex;flex-direction:column;gap:10px;z-index:70;
  opacity:0;pointer-events:none;transition:opacity .28s ease-out;
}
.float-cta.show{opacity:1;pointer-events:auto;}
.float-cta .fbtn{
  writing-mode:vertical-rl;height:132px;padding:16px 12px;border-radius:999px;
  background:var(--grad);color:#fff;font-size:14px;font-weight:600;letter-spacing:.12em;
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 14px 32px -14px rgba(244,81,30,.85);
}
.float-cta .fbtn.alt{background:#fff;color:var(--ink);border:1.5px solid var(--line);writing-mode:horizontal-tb;
  height:48px;padding:0 16px;letter-spacing:0;box-shadow:var(--shadow-sm);}
.float-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-top:1px solid var(--line);
  padding:8px 16px 10px;opacity:0;pointer-events:none;transition:opacity .28s ease-out;
}
.float-bar.show{opacity:1;pointer-events:auto;}
.float-bar .row{display:flex;align-items:center;gap:14px;}
.float-bar .row .btn{flex:1;}
.float-bar .mini{font-size:13px;color:var(--muted);text-align:center;margin-top:6px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.82);padding-top:68px;position:relative;}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand-text{color:#fff;}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);max-width:34em;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a,.footer-links span{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s ease-out;}
.footer-links a:hover{color:var(--accent);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 92px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.75);transition:color .18s;}
.to-top:hover{color:var(--accent);}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-links{display:none;}
  .menu-toggle{display:inline-flex;}
  .search-toggle span{display:none;}
  .hero{padding:56px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual img{height:320px;}
  .hero-float{left:auto;right:16px;bottom:-18px;}
  .section{padding:72px 0;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .shots{grid-template-columns:repeat(3,1fr);}
  .scene-wrap{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  h1{font-size:32px;}
  h2{font-size:24px;}
  .header-inner{gap:12px;}
  .brand-text{font-size:16px;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:1fr;gap:18px;}
  .shots{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:16px;padding-bottom:8px;}
  .shot{flex:0 0 82%;scroll-snap-align:start;}
  .section{padding:56px 0;}
  .cta-band{padding:56px 0;}
  .float-cta{display:none;}
  .float-bar{display:block;}
  .footer-bottom{padding-bottom:104px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .hero-actions .btn{width:100%;}
  .hero-visual img{height:240px;}
  .hero-float{padding:12px 14px;}
  .trust-row{gap:10px;}
  .trust-item{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-q{font-size:16px;padding:16px 18px;}
  .faq-a p{padding:0 18px 18px;}
  .btn{height:46px;padding:0 22px;}
}

/* roulang page: category2 */
:root{
    --primary:#F4511E;
    --primary-deep:#C93A0E;
    --ink:#0B3B36;
    --accent:#12C2A0;
    --warn:#E8A33D;
    --danger:#D2402B;
    --page:#FAF7F2;
    --band:#F3EEE6;
    --card:#FFFFFF;
    --line:#E7DFD3;
    --text:#33312E;
    --muted:#6E6A63;
    --gradient-brand:linear-gradient(100deg,#F4511E 0%,#FF7A3C 46%,#12C2A0 132%);
    --shadow-sm:0 2px 8px rgba(11,59,54,.06);
    --shadow-lg:0 16px 40px -12px rgba(244,81,30,.28);
    --radius-card:24px;
    --radius-img:20px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--page);
    color:var(--text);
    font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;cursor:pointer;border:none;background:none;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul{padding:0;list-style:none;}
  .num{font-variant-numeric:tabular-nums;}

  .container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:80;
    background:rgba(250,247,242,.92);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s ease;
  }
  .site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(11,59,54,.5);}
  .header-inner{
    display:flex;
    align-items:center;
    gap:20px;
    height:72px;
    transition:height .25s ease;
  }
  .site-header.is-scrolled .header-inner{height:60px;}

  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
  .brand-mark{
    width:34px;height:34px;border-radius:11px;
    background:var(--gradient-brand);
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 6px 16px -8px rgba(244,81,30,.9);
  }
  .brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap;}

  .nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
  .nav-link{
    position:relative;
    padding:9px 14px;
    border-radius:999px;
    font-size:15px;
    color:var(--text);
    transition:color .2s ease,background .2s ease;
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:16px;right:16px;bottom:4px;
    height:2px;border-radius:2px;
    background:var(--primary);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform .22s ease;
  }
  .nav-link:hover{color:var(--primary);background:rgba(244,81,30,.06);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--primary);font-weight:600;}
  .nav-link.active::after{transform:scaleX(1);}
  .nav-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

  .header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}

  .icon-btn{
    width:42px;height:42px;border-radius:999px;
    display:flex;align-items:center;justify-content:center;
    color:var(--ink);
    border:1px solid var(--line);
    background:#fff;
    transition:border-color .2s ease,color .2s ease,transform .2s ease;
  }
  .icon-btn:hover{border-color:rgba(244,81,30,.5);color:var(--primary);transform:translateY(-1px);}
  .icon-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .menu-toggle{display:none;}

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 28px;
    border-radius:999px;
    font-size:15px;font-weight:600;
    transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
    white-space:nowrap;
  }
  .btn-sm{height:40px;padding:0 20px;font-size:14px;}
  .btn-primary{
    background:var(--gradient-brand);
    background-size:180% 100%;
    background-position:0 0;
    color:#fff;
    box-shadow:0 10px 24px -14px rgba(244,81,30,.95);
  }
  .btn-primary:hover{background-position:60% 0;box-shadow:var(--shadow-lg);transform:translateY(-2px);}
  .btn-primary:active{transform:translateY(1px);filter:saturate(.92);}
  .btn-ghost{
    background:#fff;
    color:var(--ink);
    border:1.5px solid var(--line);
  }
  .btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
  .btn-ghost:active{transform:translateY(1px);}
  .btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .btn-white{background:#fff;color:var(--ink);}
  .btn-white:hover{transform:translateY(-2px);box-shadow:0 16px 34px -18px rgba(11,59,54,.6);}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--primary);font-size:14px;font-weight:600;
    text-decoration:underline;text-underline-offset:4px;
    transition:color .2s ease;
  }
  .link-arrow:hover{color:var(--primary-deep);}

  /* 搜索展开条 */
  .search-bar{
    max-height:0;
    overflow:hidden;
    transition:max-height .3s ease,border-color .3s ease;
    border-top:1px solid transparent;
  }
  .search-bar.open{max-height:90px;border-top-color:var(--line);background:#fff;}
  .search-bar form{
    display:flex;gap:12px;align-items:center;
    padding:14px 0;
  }
  .search-bar input{
    flex:1;height:48px;border-radius:20px;
    border:1.5px solid var(--line);
    background:var(--page);
    padding:0 18px;font-size:15px;color:var(--text);
    font-family:inherit;
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .search-bar input:focus{
    outline:none;border-color:var(--primary);
    box-shadow:0 0 0 4px rgba(244,81,30,.09);
    background:#fff;
  }

  /* 移动端抽屉 */
  .mobile-drawer{
    display:none;
    border-top:1px solid var(--line);
    background:#fff;
    padding:12px 0 20px;
  }
  .mobile-drawer.open{display:block;}
  .mobile-drawer a{
    display:flex;align-items:center;
    min-height:48px;padding:0 20px;
    font-size:16px;color:var(--ink);
    border-radius:14px;
  }
  .mobile-drawer a.active{color:var(--primary);font-weight:600;background:rgba(244,81,30,.07);}
  .mobile-drawer .drawer-cta{padding:12px 20px 0;}

  /* ============ 页面主体 ============ */
  .section{padding:96px 0;}
  .section-tight{padding:72px 0;}
  .section-band{background:var(--band);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

  .sec-head{max-width:720px;margin-bottom:44px;}
  .sec-tag{
    display:inline-flex;align-items:center;gap:8px;
    height:30px;padding:0 14px;border-radius:999px;
    background:rgba(18,194,160,.12);
    color:var(--ink);font-size:13px;font-weight:600;
    margin-bottom:16px;
  }
  .sec-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
  h2{font-size:28px;line-height:1.3;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
  .sec-sub{margin-top:12px;font-size:15px;color:var(--muted);}

  /* Hero 引导带 */
  .hero-band{
    position:relative;
    background:
      linear-gradient(100deg,rgba(244,81,30,.10) 0%,rgba(255,122,60,.07) 46%,rgba(18,194,160,.12) 132%),
      var(--page);
    border-bottom:1px solid var(--line);
    padding:64px 0 56px;
    overflow:hidden;
  }
  .hero-band::after{
    content:"";
    position:absolute;
    right:-140px;top:-120px;
    width:460px;height:460px;
    border-radius:50%;
    border:1px solid rgba(244,81,30,.18);
    pointer-events:none;
  }
  .hero-band::before{
    content:"";
    position:absolute;
    right:-60px;top:-40px;
    width:300px;height:300px;
    border-radius:50%;
    border:1px solid rgba(18,194,160,.20);
    pointer-events:none;
  }
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13px;color:var(--muted);margin-bottom:22px;
  }
  .breadcrumb a{transition:color .2s ease;}
  .breadcrumb a:hover{color:var(--primary);}
  .breadcrumb .sep{color:rgba(110,106,99,.55);}
  .hero-title{
    font-size:40px;line-height:1.25;font-weight:700;letter-spacing:-.01em;color:var(--ink);
    max-width:760px;
  }
  .hero-lead{
    margin-top:16px;font-size:17px;color:var(--text);max-width:660px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
  .tag-row{
    display:flex;gap:10px;margin-top:32px;
    overflow-x:auto;padding-bottom:6px;
    scrollbar-width:none;
  }
  .tag-row::-webkit-scrollbar{display:none;}
  .tag{
    flex:0 0 auto;
    display:inline-flex;align-items:center;
    height:38px;padding:0 18px;
    border-radius:999px;
    border:1px solid var(--line);
    background:#fff;
    font-size:14px;color:var(--text);
    transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
  }
  .tag:hover{border-color:rgba(244,81,30,.5);color:var(--primary);transform:translateY(-2px);}
  .tag.selected{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600;}

  .hero-stats{
    display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
    margin-top:36px;
  }
  .stat-chip{
    background:rgba(255,255,255,.85);
    border:1px solid var(--line);
    border-radius:20px;
    padding:16px 20px;
    box-shadow:var(--shadow-sm);
  }
  .stat-chip .big{font-size:26px;font-weight:700;color:var(--ink);line-height:1.2;}
  .stat-chip .unit{font-size:14px;font-weight:600;color:var(--primary);margin-left:2px;}
  .stat-chip .cap{font-size:13px;color:var(--muted);margin-top:4px;}

  /* 卡片 */
  .grid-3{display:grid;grid-template-columns:1fr;gap:24px;}
  .card{
    display:flex;flex-direction:column;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:26px;
    box-shadow:var(--shadow-sm);
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .card:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-lg);
    border-color:rgba(244,81,30,.3);
  }
  .card-media{
    position:relative;
    aspect-ratio:16/9;
    border-radius:var(--radius-img);
    overflow:hidden;
    background:var(--band);
    border:1px solid var(--line);
    margin-bottom:20px;
  }
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
  .card:hover .card-media img{transform:scale(1.04);}
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    height:28px;padding:0 12px;border-radius:999px;
    background:rgba(18,194,160,.14);
    color:var(--ink);font-size:13px;font-weight:600;
  }
  .badge-warm{background:rgba(244,81,30,.12);color:var(--primary-deep);}
  .card h3{font-size:20px;font-weight:600;color:var(--ink);line-height:1.4;}
  .card p{margin-top:12px;font-size:15px;color:var(--muted);line-height:1.75;}
  .card .card-foot{margin-top:auto;padding-top:20px;display:flex;align-items:center;justify-content:space-between;gap:12px;}
  .mini-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
  .mini-tags span{
    font-size:12.5px;color:var(--muted);
    background:var(--band);
    border-radius:999px;padding:4px 12px;
  }

  /* 看板预览 */
  .split{
    display:grid;
    grid-template-columns:1fr;
    gap:40px;
    align-items:center;
  }
  .check-list{margin-top:24px;display:grid;gap:16px;}
  .check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--text);}
  .check-list .ico{
    flex:0 0 auto;width:24px;height:24px;border-radius:50%;
    background:rgba(18,194,160,.16);
    display:flex;align-items:center;justify-content:center;
    margin-top:3px;
  }
  .board-wrap{position:relative;}
  .board-img{
    border-radius:var(--radius-card);
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:0 24px 60px -34px rgba(11,59,54,.6);
  }
  .board-img img{width:100%;aspect-ratio:4/3;object-fit:cover;}
  .board-img::after{
    content:"";
    position:absolute;inset:0;
    border-radius:var(--radius-card);
    background:linear-gradient(100deg,rgba(244,81,30,.12),rgba(18,194,160,.12));
    pointer-events:none;
  }
  .float-card{
    position:absolute;
    left:-10px;bottom:-22px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:20px;
    padding:16px 20px;
    box-shadow:var(--shadow-lg);
    min-width:210px;
  }
  .float-card .row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;}
  .float-card .v{font-size:24px;font-weight:700;color:var(--ink);}
  .float-card .k{font-size:13px;color:var(--muted);}
  .float-card .bar{height:6px;border-radius:999px;background:var(--band);margin-top:12px;overflow:hidden;}
  .float-card .bar i{display:block;height:100%;width:76%;background:var(--gradient-brand);border-radius:999px;}
  .badge-wall{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:26px;}
  .b-chip{
    background:rgba(18,194,160,.10);
    border:1px solid rgba(18,194,160,.28);
    border-radius:18px;
    padding:14px 16px;
  }
  .b-chip .v{font-size:22px;font-weight:700;color:var(--ink);}
  .b-chip .k{font-size:13px;color:var(--muted);margin-top:2px;}

  /* 步骤 */
  .steps{display:grid;grid-template-columns:1fr;gap:22px;margin-top:8px;}
  .step{
    display:flex;gap:18px;align-items:flex-start;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px;
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .step:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(244,81,30,.3);}
  .step-no{
    flex:0 0 auto;
    width:36px;height:36px;border-radius:12px;
    background:var(--gradient-brand);
    color:#fff;font-weight:700;font-size:15px;
    display:flex;align-items:center;justify-content:center;
  }
  .step h3{font-size:17px;font-weight:600;color:var(--ink);}
  .step p{margin-top:8px;font-size:14.5px;color:var(--muted);}

  /* FAQ */
  .faq-list{max-width:860px;margin:0 auto;display:grid;gap:14px;}
  .faq-item{
    background:#fff;
    border:1px solid var(--line);
    border-radius:20px;
    overflow:hidden;
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .faq-item.open{border-color:rgba(244,81,30,.35);box-shadow:var(--shadow-sm);}
  .faq-q{
    width:100%;
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:24px;
    text-align:left;
    font-size:17px;font-weight:600;color:var(--ink);
  }
  .faq-q:focus-visible{outline:2px solid var(--accent);outline-offset:-3px;}
  .faq-q .caret{
    flex:0 0 auto;width:26px;height:26px;border-radius:50%;
    background:var(--band);
    display:flex;align-items:center;justify-content:center;
    color:var(--ink);
    transition:transform .3s ease,background .3s ease,color .3s ease;
  }
  .faq-item.open .caret{transform:rotate(180deg);background:var(--primary);color:#fff;}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
  .faq-a p{padding:0 24px 24px;font-size:15px;line-height:1.8;color:var(--muted);}

  /* CTA */
  .cta-band{
    background:var(--gradient-brand);
    border-radius:28px;
    padding:52px 32px;
    color:#fff;
    text-align:center;
    box-shadow:0 26px 60px -34px rgba(244,81,30,.95);
    position:relative;
    overflow:hidden;
  }
  .cta-band::after{
    content:"";
    position:absolute;left:-80px;bottom:-120px;
    width:280px;height:280px;border-radius:50%;
    border:1px solid rgba(255,255,255,.28);
  }
  .cta-band h2{color:#fff;font-size:28px;}
  .cta-band p{margin-top:14px;font-size:16px;color:rgba(255,255,255,.92);}
  .cta-band .btn{margin-top:28px;}

  /* ============ 页脚 ============ */
  .site-footer{
    background:var(--ink);
    color:rgba(255,255,255,.82);
    padding:64px 0 28px;
    margin-top:96px;
    position:relative;
    border-top:1px solid rgba(255,255,255,.12);
  }
  .site-footer::before{
    content:"";
    position:absolute;top:0;left:0;right:0;height:1px;
    background:var(--gradient-brand);
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:36px;
  }
  .footer-brand .brand-text{color:#fff;}
  .footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);max-width:320px;}
  .site-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
  .footer-links{display:flex;flex-direction:column;gap:10px;}
  .footer-links a,.footer-links span{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease;}
  .footer-links a:hover{color:var(--accent);}
  .footer-bottom{
    margin-top:44px;padding-top:22px;
    border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;gap:14px;
    align-items:center;justify-content:space-between;
    font-size:13px;color:rgba(255,255,255,.62);
  }
  .to-top{
    display:inline-flex;align-items:center;gap:8px;
    height:40px;padding:0 18px;border-radius:999px;
    border:1px solid rgba(255,255,255,.24);
    color:#fff;font-size:13px;
    transition:border-color .2s ease,color .2s ease,transform .2s ease;
  }
  .to-top:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}

  /* 浮动 CTA */
  .desktop-float{
    position:fixed;right:24px;bottom:36px;z-index:70;
    display:flex;flex-direction:column;gap:12px;align-items:flex-end;
    opacity:0;pointer-events:none;transform:translateY(10px);
    transition:opacity .3s ease,transform .3s ease;
  }
  .desktop-float.show{opacity:1;pointer-events:auto;transform:translateY(0);}
  .float-pill{
    display:inline-flex;align-items:center;gap:8px;
    height:46px;padding:0 22px;border-radius:999px;
    font-size:14px;font-weight:600;
  }
  .float-pill.primary{background:var(--gradient-brand);color:#fff;box-shadow:0 14px 30px -16px rgba(244,81,30,.95);}
  .float-pill.plain{background:#fff;color:var(--ink);border:1px solid var(--line);}
  .float-pill:hover{transform:translateY(-2px);}
  .mobile-cta{
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    display:none;
    align-items:center;gap:12px;
    height:60px;padding:0 14px;
    background:rgba(255,255,255,.96);
    backdrop-filter:blur(8px);
    border-top:1px solid var(--line);
    transform:translateY(100%);
    transition:transform .3s ease;
  }
  .mobile-cta.show{transform:translateY(0);}
  .mobile-cta .btn{flex:1;height:44px;padding:0 16px;}
  .mobile-cta .txt{font-size:12.5px;color:var(--muted);white-space:nowrap;}

  /* ============ 响应式 ============ */
  @media (max-width:1023px){
    .nav-links{display:none;}
    .menu-toggle{display:flex;}
    .desktop-float{display:none;}
    .mobile-cta{display:flex;}
    .site-footer{padding-bottom:88px;}
    .section{padding:72px 0;}
    .hero-title{font-size:32px;}
    .hero-band{padding:44px 0 44px;}
  }
  @media (max-width:767px){
    .header-actions .btn-sm{display:none;}
    .section{padding:56px 0;}
    .hero-stats{grid-template-columns:1fr;gap:14px;}
    .badge-wall{grid-template-columns:1fr;}
    .float-card{position:static;margin-top:18px;left:auto;bottom:auto;}
    .board-img::after{border-radius:var(--radius-card);}
    .cta-band{padding:40px 22px;border-radius:24px;}
    .cta-band h2{font-size:23px;}
  }
  @media (min-width:640px){
    .grid-3{grid-template-columns:repeat(2,1fr);}
    .steps{grid-template-columns:repeat(2,1fr);}
    .footer-grid{grid-template-columns:repeat(2,1fr);}
  }
  @media (min-width:1024px){
    .grid-3{grid-template-columns:repeat(3,1fr);}
    .steps{grid-template-columns:repeat(4,1fr);}
    .split{grid-template-columns:1.05fr .95fr;gap:56px;}
    .footer-grid{grid-template-columns:1.4fr .8fr .8fr 1fr;gap:40px;}
  }

/* roulang page: category3 */
:root{
    --primary:#F4511E;
    --primary-deep:#C93A0E;
    --ink:#0B3B36;
    --accent:#12C2A0;
    --warn:#E8A33D;
    --danger:#D2402B;
    --page:#FAF7F2;
    --band:#F3EEE6;
    --card:#FFFFFF;
    --line:#E7DFD3;
    --text:#33312E;
    --muted:#6E6A63;
    --grad:linear-gradient(100deg,#F4511E 0%,#FF7A3C 46%,#12C2A0 132%);
    --r-lg:24px;
    --r-md:20px;
    --r-sm:14px;
    --sh-1:0 2px 8px rgba(11,59,54,.06);
    --sh-2:0 16px 40px -12px rgba(244,81,30,.28);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
    background:var(--page);
    color:var(--text);
    font-size:16px;
    line-height:1.75;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font-family:inherit;cursor:pointer}
  h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.28}
  p{margin:0}
  ul{margin:0;padding:0;list-style:none}
  .tnum{font-variant-numeric:tabular-nums}

  .container{
    width:100%;
    max-width:1180px;
    margin:0 auto;
    padding:0 20px;
  }

  /* ============ 导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(250,247,242,.94);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
    transition:background .25s ease,box-shadow .25s ease;
  }
  .site-header.scrolled{box-shadow:0 6px 24px -18px rgba(11,59,54,.45)}
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    height:64px;
    transition:height .25s ease;
  }
  .site-header.scrolled .header-inner{height:56px}

  .brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
  .brand-mark{
    width:32px;height:32px;border-radius:10px;
    background:var(--grad);
    display:inline-flex;align-items:center;justify-content:center;
    box-shadow:0 6px 16px -8px rgba(244,81,30,.75);
  }
  .brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em}

  .header-right{display:flex;align-items:center;gap:18px;flex:1 1 auto;justify-content:flex-end}
  .nav-links{display:flex;align-items:center;gap:4px}
  .nav-link{
    position:relative;
    padding:9px 12px;
    font-size:15px;
    color:#4a4740;
    border-radius:999px;
    transition:color .2s ease;
    white-space:nowrap;
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:12px;right:12px;bottom:3px;
    height:2px;border-radius:2px;
    background:var(--primary);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .22s ease;
  }
  .nav-link:hover{color:var(--primary)}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.active{color:var(--primary);font-weight:600}
  .nav-link.active::after{transform:scaleX(1)}

  .header-actions{display:flex;align-items:center;gap:12px}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 28px;
    border-radius:999px;
    font-size:15px;font-weight:600;
    border:1.5px solid transparent;
    transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
    cursor:pointer;
    text-align:center;
  }
  .btn-primary{
    background:var(--grad);
    background-size:150% 100%;
    background-position:0 0;
    color:#fff;
    box-shadow:0 10px 24px -12px rgba(244,81,30,.75);
  }
  .btn-primary:hover{background-position:100% 0;transform:translateY(-2px);box-shadow:0 16px 40px -12px rgba(244,81,30,.5)}
  .btn-primary:active{transform:translateY(1px);filter:saturate(.92)}
  .btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
  .btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
  .btn-ghost:active{transform:translateY(1px)}
  .btn-white{background:#fff;color:var(--ink)}
  .btn-white:hover{transform:translateY(-2px);box-shadow:0 18px 40px -16px rgba(11,59,54,.55)}
  .btn-sm{height:40px;padding:0 20px;font-size:14px}
  .btn-lg{height:52px;padding:0 32px;font-size:16px}
  .btn-block{width:100%}
  .btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

  .icon-btn{
    width:40px;height:40px;border-radius:999px;
    display:inline-flex;align-items:center;justify-content:center;
    background:#fff;border:1.5px solid var(--line);color:var(--ink);
    transition:border-color .2s ease,color .2s ease,transform .2s ease;
  }
  .icon-btn:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}
  .icon-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

  .menu-toggle{display:none}

  .header-search{
    max-height:0;overflow:hidden;
    transition:max-height .28s ease;
    border-top:1px solid transparent;
  }
  .header-search.open{max-height:96px;border-top-color:var(--line)}
  .search-form{
    display:flex;align-items:center;gap:12px;
    padding:14px 0;
  }
  .search-form .search-field{
    flex:1 1 auto;display:flex;align-items:center;gap:10px;
    background:#fff;border:1.5px solid var(--line);border-radius:20px;
    height:48px;padding:0 16px;color:var(--muted);
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .search-form .search-field:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(244,81,30,.08)}
  .search-form input{
    flex:1 1 auto;border:0;outline:0;background:transparent;
    font-size:15px;color:var(--text);font-family:inherit;height:100%;
  }

  /* ============ 移动抽屉 ============ */
  .mobile-drawer{
    position:fixed;inset:0;
    background:var(--page);
    z-index:55;
    padding:84px 0 32px;
    overflow-y:auto;
    opacity:0;pointer-events:none;
    transform:translateY(-10px);
    transition:opacity .22s ease,transform .22s ease;
  }
  .mobile-drawer.open{opacity:1;pointer-events:auto;transform:none}
  .drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:24px}
  .drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    min-height:52px;padding:0 18px;
    border-radius:18px;
    font-size:16px;color:var(--ink);
    background:#fff;border:1px solid var(--line);
  }
  .drawer-link.active{background:rgba(18,194,160,.12);border-color:rgba(18,194,160,.4);color:var(--ink);font-weight:600}

  /* ============ Hero ============ */
  .hero{
    position:relative;
    padding:52px 0 84px;
    overflow:hidden;
  }
  .hero::before{
    content:"";
    position:absolute;top:-140px;right:-120px;
    width:520px;height:520px;border-radius:50%;
    background:radial-gradient(circle,rgba(244,81,30,.14),rgba(244,81,30,0) 68%);
    pointer-events:none;
  }
  .hero-arc{
    position:absolute;left:0;right:0;bottom:-1px;height:120px;
    pointer-events:none;opacity:.8;
  }
  .hero-grid{
    position:relative;
    display:grid;
    grid-template-columns:55fr 45fr;
    gap:52px;
    align-items:center;
  }
  .breadcrumb{
    display:flex;align-items:center;gap:8px;
    font-size:13px;color:var(--muted);margin-bottom:20px;flex-wrap:wrap;
  }
  .breadcrumb a{color:var(--muted);transition:color .2s ease}
  .breadcrumb a:hover{color:var(--primary)}
  .breadcrumb .sep{color:rgba(110,106,99,.5)}

  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;border-radius:999px;
    background:rgba(18,194,160,.12);
    color:var(--ink);
    font-size:13px;font-weight:600;
    border:1px solid rgba(18,194,160,.28);
    margin-bottom:18px;
  }
  .eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}

  .hero h1{
    font-size:clamp(32px,4.4vw,40px);
    font-weight:700;
    letter-spacing:-.01em;
    line-height:1.25;
    margin-bottom:16px;
  }
  .hero-sub{
    font-size:17px;
    color:var(--ink);
    font-weight:600;
    margin-bottom:14px;
  }
  .hero-text{
    font-size:16px;
    line-height:1.8;
    color:#4a4740;
    max-width:560px;
    margin-bottom:28px;
  }
  .hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:32px}

  .trust-row{display:flex;gap:12px;flex-wrap:wrap}
  .stat-badge{
    padding:12px 18px;
    border-radius:999px;
    background:rgba(18,194,160,.1);
    border:1px solid rgba(18,194,160,.22);
    display:flex;align-items:baseline;gap:6px;
    font-size:13px;color:var(--muted);
  }
  .stat-badge strong{font-size:24px;font-weight:700;color:var(--ink);line-height:1}
  .stat-badge .unit{font-size:13px;color:var(--ink);font-weight:600}

  .hero-media{
    position:relative;
    border-radius:var(--r-lg);
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:0 24px 60px -30px rgba(11,59,54,.5);
  }
  .hero-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/13;background:var(--band)}
  .hero-media::after{
    content:"";
    position:absolute;inset:0;
    background:var(--grad);
    opacity:.12;
    pointer-events:none;
  }
  .hero-float-card{
    position:absolute;left:18px;bottom:18px;
    display:flex;align-items:center;gap:12px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:18px;
    padding:12px 16px;
    box-shadow:0 14px 34px -18px rgba(11,59,54,.5);
    z-index:2;
  }
  .hero-float-card strong{display:block;font-size:14px;color:var(--ink)}
  .hero-float-card span{font-size:12px;color:var(--muted)}
  .pulse-dot{
    width:10px;height:10px;border-radius:50%;
    background:var(--accent);
    box-shadow:0 0 0 0 rgba(18,194,160,.55);
    animation:pulse 2.2s infinite;
    flex:0 0 auto;
  }
  @keyframes pulse{
    0%{box-shadow:0 0 0 0 rgba(18,194,160,.5)}
    70%{box-shadow:0 0 0 12px rgba(18,194,160,0)}
    100%{box-shadow:0 0 0 0 rgba(18,194,160,0)}
  }

  /* ============ 通用板块 ============ */
  .section{padding:96px 0}
  .section-head{margin-bottom:44px}
  .section-head h2{font-size:clamp(24px,3vw,28px);font-weight:700;letter-spacing:-.01em}
  .section-head p{margin-top:10px;color:var(--muted);font-size:15px;max-width:640px}
  .section-num{
    width:32px;height:32px;border-radius:10px;
    background:var(--grad);
    color:#fff;font-size:14px;font-weight:700;
    display:inline-flex;align-items:center;justify-content:center;
    margin-right:12px;
    vertical-align:middle;
    box-shadow:0 8px 18px -10px rgba(244,81,30,.8);
  }

  .card{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    box-shadow:var(--sh-1);
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(244,81,30,.3)}

  /* 1 大 2 小混合布局 */
  .lead-card{
    display:grid;
    grid-template-columns:1.05fr 1fr;
    padding:0;
    overflow:hidden;
    margin-bottom:26px;
  }
  .lead-media{position:relative;min-height:280px}
  .lead-media img{width:100%;height:100%;object-fit:cover;background:var(--band)}
  .lead-media .tag{
    position:absolute;left:18px;top:18px;
    padding:6px 14px;border-radius:999px;
    background:rgba(255,255,255,.92);
    color:var(--ink);font-size:13px;font-weight:600;
  }
  .lead-body{padding:32px}
  .lead-body h3{font-size:20px;font-weight:600;margin-bottom:12px}
  .lead-body p{font-size:15px;color:#4a4740;line-height:1.8;margin-bottom:8px}
  .mini-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
  .mini-list li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink)}
  .tick{
    width:20px;height:20px;border-radius:50%;
    background:rgba(18,194,160,.16);
    display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
  }

  .sub-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
  .media-card{padding:0;overflow:hidden;display:flex;flex-direction:column;height:100%}
  .media-card .thumb{position:relative}
  .media-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:calc(var(--r-lg) - 1px) calc(var(--r-lg) - 1px) 0 0;background:var(--band)}
  .media-card .body{padding:26px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
  .media-card h3{font-size:18px;font-weight:600}
  .media-card p{font-size:15px;color:#4a4740;line-height:1.8}

  /* 场景列表 */
  .scene-list{
    display:grid;grid-template-columns:repeat(2,1fr);
    gap:0 32px;
    border-top:1px dashed var(--line);
  }
  .scene-item{
    display:flex;gap:14px;align-items:flex-start;
    padding:22px 2px;
    border-bottom:1px dashed var(--line);
  }
  .scene-index{
    width:28px;height:28px;flex:0 0 auto;
    border-radius:9px;
    background:var(--grad);color:#fff;
    font-size:13px;font-weight:700;
    display:inline-flex;align-items:center;justify-content:center;
  }
  .scene-item h3{font-size:16px;font-weight:600;margin-bottom:4px}
  .scene-item p{font-size:14px;color:var(--muted);line-height:1.7}

  /* 步骤 */
  .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
  .step{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
    padding:26px;box-shadow:var(--sh-1);
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(244,81,30,.3)}
  .step-num{
    width:28px;height:28px;border-radius:9px;
    background:var(--grad);color:#fff;
    font-size:13px;font-weight:700;
    display:inline-flex;align-items:center;justify-content:center;
    margin-bottom:14px;
  }
  .step h3{font-size:17px;font-weight:600;margin-bottom:8px}
  .step p{font-size:14px;color:var(--muted);line-height:1.75}

  /* 色带板块 */
  .band-section{
    background:var(--band);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px 28px}
  .check-item{
    display:flex;gap:10px;align-items:flex-start;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
    padding:18px 20px;font-size:15px;color:var(--ink);
    box-shadow:var(--sh-1);
    transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
  }
  .check-item:hover{transform:translateY(-4px);border-color:rgba(244,81,30,.3);box-shadow:var(--sh-2)}
  .metrics-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:36px}
  .metric{
    flex:1 1 200px;
    background:rgba(255,255,255,.9);
    border:1px solid var(--line);
    border-radius:var(--r-md);
    padding:20px 22px;
  }
  .metric strong{display:block;font-size:28px;font-weight:700;color:var(--ink);line-height:1.1}
  .metric span{font-size:13px;color:var(--muted)}

  /* FAQ */
  .faq-list{display:flex;flex-direction:column;gap:14px;max-width:860px}
  .faq-item{
    background:var(--card);border:1px solid var(--line);
    border-radius:var(--r-lg);box-shadow:var(--sh-1);
    overflow:hidden;
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .faq-item:hover{border-color:rgba(244,81,30,.3)}
  .faq-item.open{border-color:rgba(244,81,30,.4);box-shadow:var(--sh-2)}
  .faq-q{
    width:100%;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:22px 24px;
    background:transparent;border:0;
    font-size:17px;font-weight:600;color:var(--ink);
    text-align:left;line-height:1.5;
  }
  .faq-q:focus-visible{outline:2px solid var(--accent);outline-offset:-4px}
  .faq-arrow{flex:0 0 auto;transition:transform .28s ease;color:var(--primary)}
  .faq-item.open .faq-arrow{transform:rotate(180deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
  .faq-a p{padding:0 24px 24px;font-size:15px;line-height:1.85;color:#4a4740}

  /* CTA */
  .cta-band{
    background:var(--grad);
    border-radius:var(--r-lg);
    padding:52px 44px;
    color:#fff;
    display:flex;align-items:center;justify-content:space-between;gap:32px;
    flex-wrap:wrap;
    box-shadow:0 28px 60px -30px rgba(244,81,30,.85);
  }
  .cta-band h2{color:#fff;font-size:clamp(22px,2.8vw,28px);font-weight:700}
  .cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.9)}

  /* ============ 页脚 ============ */
  .site-footer{
    position:relative;
    background:var(--ink);
    color:rgba(255,255,255,.78);
    padding:64px 0 28px;
  }
  .site-footer::before{
    content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad);
  }
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
  .footer-brand .brand-text{color:#fff}
  .footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);max-width:320px}
  .site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
  .footer-links{display:flex;flex-direction:column;gap:11px;font-size:14px}
  .footer-links a,.footer-links span{color:rgba(255,255,255,.72);transition:color .2s ease}
  .footer-links a:hover{color:var(--accent)}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;
    gap:16px;flex-wrap:wrap;
    border-top:1px solid rgba(255,255,255,.12);
    margin-top:44px;padding-top:20px;
    font-size:13px;color:rgba(255,255,255,.6);
  }
  .to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.8);transition:color .2s ease}
  .to-top:hover{color:var(--accent)}

  /* ============ 响应式 ============ */
  @media (max-width:1023px){
    .nav-links{display:none}
    .menu-toggle{display:inline-flex}
    .header-actions .btn-primary{display:none}
    .hero{padding:36px 0 64px}
    .hero-grid{grid-template-columns:1fr;gap:36px}
    .hero-media{order:2}
    .hero-media img{aspect-ratio:16/10}
    .section{padding:72px 0}
    .lead-card{grid-template-columns:1fr}
    .lead-media{min-height:220px}
    .lead-body{padding:26px}
    .sub-grid{grid-template-columns:1fr}
    .steps{grid-template-columns:1fr}
    .check-grid{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  }
  @media (min-width:1024px){
    .mobile-drawer{display:none}
  }
  @media (max-width:767px){
    .container{padding:0 16px}
    .header-inner{height:56px}
    .site-header.scrolled .header-inner{height:56px}
    .brand-text{font-size:16px}
    .hero{padding:28px 0 56px}
    .hero-text{font-size:15px}
    .hero-actions{gap:10px}
    .hero-actions .btn{width:100%}
    .section{padding:56px 0}
    .scene-list{grid-template-columns:1fr;gap:0}
    .check-grid{grid-template-columns:1fr}
    .cta-band{padding:34px 24px;border-radius:var(--r-md)}
    .cta-band .btn{width:100%}
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
    .search-form{flex-wrap:wrap}
    .search-form .btn{width:100%}
    .stat-badge{padding:10px 14px}
    .stat-badge strong{font-size:21px}
  }
  @media (max-width:520px){
    .hero-media img{aspect-ratio:4/3}
    .hero-float-card{left:12px;bottom:12px;padding:10px 12px}
    .lead-body{padding:22px}
  }