/* roulang page: index */
:root{
  --brand:#12C7A4;
  --brand-deep:#0B8F77;
  --brand-soft:rgba(18,199,164,.12);
  --ink:#12121B;
  --ink-2:#1C1D2B;
  --accent:#FF7A3D;
  --accent-deep:#E8662B;
  --bg:#F7F8FA;
  --card:#FFFFFF;
  --line:#E6E8EE;
  --text:#1A1C25;
  --muted:#5B6070;
  --danger:#E5484D;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow:0 1px 2px rgba(18,18,27,.06), 0 8px 24px -12px rgba(18,18,27,.18);
  --shadow-lg:0 2px 4px rgba(18,18,27,.06), 0 18px 40px -18px rgba(18,18,27,.3);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:180ms;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--brand-deep);}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.3px;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.bg-white{background:#fff;}
.bg-soft{background:var(--bg);}
.bg-dark{background:var(--ink);color:#fff;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.sec-head h2{font-size:28px;font-weight:700;}
.sec-head .sec-sub{margin-top:10px;color:var(--muted);font-size:15px;max-width:640px;}
.bg-dark .sec-head .sec-sub{color:rgba(255,255,255,.66);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.4px;
  color:var(--brand-deep);background:var(--brand-soft);
  border-radius:var(--r-pill);padding:5px 14px;margin-bottom:18px;
}
.bg-dark .eyebrow{color:#8FF0DE;background:rgba(18,199,164,.14);}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-deep);}
.link-more svg{transition:transform var(--dur) var(--ease);}
.link-more:hover svg{transform:translateX(3px);}

/* 顶部信息条 */
.topbar{background:var(--ink);color:rgba(255,255,255,.72);font-size:13px;height:36px;}
.topbar .container{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.3px;}
.topbar-tip{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:rgba(255,255,255,.6);}
.topbar-links{display:flex;align-items:center;gap:18px;flex-shrink:0;}
.topbar-links a{color:rgba(255,255,255,.82);transition:color var(--dur) var(--ease);}
.topbar-links a:hover{color:var(--brand);}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow var(--dur) var(--ease);}
.site-header.is-stuck{box-shadow:0 8px 24px -16px rgba(18,18,27,.35);}
.nav{height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
  display:flex;flex-direction:column;justify-content:center;gap:3px;padding:0 8px;
  box-shadow:0 6px 16px -8px rgba(18,199,164,.9);
}
.logo-mark i{display:block;height:3px;border-radius:2px;background:#fff;opacity:.95;}
.logo-mark i:nth-child(2){width:70%;opacity:.8;}
.logo-mark i:nth-child(3){width:45%;opacity:.6;}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.2px;white-space:nowrap;}
.nav-pills{display:flex;align-items:center;gap:4px;background:var(--bg);border:1px solid var(--line);border-radius:var(--r-pill);padding:4px;}
.nav-pills a{
  padding:7px 15px;border-radius:var(--r-pill);font-size:14px;font-weight:500;color:var(--muted);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-pills a:hover{color:var(--text);background:#fff;}
.nav-pills a.active{background:var(--ink);color:#fff;}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--muted);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-soft);}
.nav-drawer-btn{display:none;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),
             border-color var(--dur) var(--ease),color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
  white-space:nowrap;
}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--brand);color:#062B23;box-shadow:0 10px 22px -14px rgba(18,199,164,.95);}
.btn-primary:hover{background:#1ED6B2;transform:translateY(-1px);color:#062B23;}
.btn-accent{background:var(--accent);color:#3A1300;}
.btn-accent:hover{background:#FF8A55;transform:translateY(-1px);color:#3A1300;}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-1px);}
.btn-outline-light{background:transparent;border:1px solid rgba(255,255,255,.28);color:#fff;}
.btn-outline-light:hover{border-color:var(--brand);color:#8FF0DE;transform:translateY(-1px);}
.btn-lg{padding:14px 28px;font-size:16px;}
.btn-sm{padding:8px 16px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.45;pointer-events:none;}

/* Hero */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background-color:var(--ink);
  background-image:linear-gradient(180deg,rgba(10,10,17,.78) 0%,rgba(10,10,17,.9) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 20% 10%,#000 0%,transparent 70%);
  -webkit-mask-image:radial-gradient(circle at 20% 10%,#000 0%,transparent 70%);
}
.hero-inner{position:relative;z-index:2;padding:88px 0 72px;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero h1{font-size:36px;line-height:1.28;font-weight:700;letter-spacing:-.5px;}
.hero .lede{margin-top:18px;font-size:18px;line-height:1.7;color:rgba(255,255,255,.78);max-width:520px;}
.hero-cta{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap;}
.hero-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.55);}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  margin-top:44px;padding-top:28px;border-top:1px solid rgba(255,255,255,.1);
}
.hero-stats .num{font-size:26px;font-weight:700;color:var(--brand);letter-spacing:-.5px;}
.hero-stats .num small{font-size:13px;font-weight:600;margin-left:2px;color:rgba(255,255,255,.55);}
.hero-stats .lbl{font-size:13px;color:rgba(255,255,255,.6);margin-top:4px;}

.hero-cards{position:relative;padding:12px 0 12px 34px;}
.stack-card{
  background:#fff;color:var(--text);border-radius:8px;padding:16px 18px;
  box-shadow:0 20px 44px -22px rgba(0,0,0,.7);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.stack-card + .stack-card{margin-top:14px;}
.stack-card:nth-child(1){transform:translateX(28px) scale(.97);opacity:.92;}
.stack-card:nth-child(2){transform:translateX(12px);}
.stack-card .sc-name{font-size:14px;font-weight:600;}
.stack-card .sc-meta{font-size:12px;color:var(--muted);margin-top:2px;}
.stack-card .sc-val{font-size:18px;font-weight:700;color:var(--brand-deep);white-space:nowrap;}
.stack-card .sc-val small{font-size:12px;color:var(--muted);font-weight:500;margin-left:3px;}
.float-chip{
  position:absolute;right:-6px;bottom:-18px;z-index:3;
  background:var(--ink-2);border:1px solid rgba(255,255,255,.14);
  border-radius:12px;padding:12px 16px;box-shadow:0 18px 40px -20px rgba(0,0,0,.9);
  display:flex;align-items:center;gap:10px;
}
.float-chip .dot{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(18,199,164,.18);}
.float-chip span{font-size:13px;color:rgba(255,255,255,.85);}

/* 卖点 */
.diff-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.diff-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.diff-item:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:var(--shadow-lg);}
.diff-item .idx{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:1px;
  color:var(--brand-deep);background:var(--brand-soft);border-radius:var(--r-pill);
  padding:3px 12px;margin-bottom:16px;
}
.diff-item h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.diff-item p{font-size:15px;color:var(--muted);line-height:1.8;}

/* 演示 */
.demo-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.step{display:flex;gap:20px;padding:22px 0;border-bottom:1px solid rgba(255,255,255,.09);}
.step:last-child{border-bottom:0;}
.step .no{font-size:34px;font-weight:700;color:var(--brand);line-height:1;letter-spacing:-1px;min-width:52px;}
.step h3{font-size:19px;font-weight:600;margin-bottom:8px;}
.step p{font-size:15px;color:rgba(255,255,255,.66);line-height:1.8;}
.device{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);
  padding:12px;
  box-shadow:inset 0 0 60px rgba(18,199,164,.08);
}
.device img{border-radius:12px;width:100%;aspect-ratio:16/10;object-fit:cover;}
.device .badge-float{
  position:absolute;left:26px;bottom:26px;
  background:rgba(18,18,27,.92);border:1px solid rgba(18,199,164,.4);
  border-radius:12px;padding:10px 14px;font-size:13px;color:#8FF0DE;
  display:flex;align-items:center;gap:8px;
}

/* 证据 */
.proof-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.stat-block{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow);}
.stat-block .num{font-size:34px;font-weight:700;color:var(--brand-deep);letter-spacing:-1px;line-height:1;}
.stat-block .num small{font-size:14px;font-weight:600;margin-left:4px;color:var(--muted);letter-spacing:0;}
.stat-block .lbl{font-size:14px;color:var(--muted);margin-top:10px;}
.quote-list{display:grid;gap:20px;}
.quote-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow);}
.quote-card p{font-size:15px;line-height:1.85;color:var(--text);}
.quote-user{display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);}
.avatar{
  width:40px;height:40px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#062B23;font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;
}
.quote-user .name{font-size:14px;font-weight:600;}
.quote-user .role{font-size:12.5px;color:var(--muted);}

/* 价格 */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.plan{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 26px;display:flex;flex-direction:column;box-shadow:var(--shadow);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.plan:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:var(--shadow-lg);}
.plan--hot{background:var(--ink);border-color:rgba(18,199,164,.55);color:#fff;box-shadow:0 24px 50px -26px rgba(18,18,27,.7);}
.plan--hot:hover{border-color:var(--brand);}
.plan-tag{
  position:absolute;top:-13px;left:26px;background:var(--brand);color:#062B23;
  font-size:12.5px;font-weight:700;padding:4px 14px;border-radius:var(--r-pill);letter-spacing:.5px;
}
.plan h3{font-size:18px;font-weight:600;}
.plan .plan-desc{font-size:13.5px;color:var(--muted);margin-top:8px;}
.plan--hot .plan-desc{color:rgba(255,255,255,.6);}
.plan .price{display:flex;align-items:baseline;gap:4px;margin:22px 0 6px;}
.plan .price .amount{font-size:40px;font-weight:700;letter-spacing:-1.5px;line-height:1;}
.plan .price .unit{font-size:14px;color:var(--muted);}
.plan--hot .price .unit{color:rgba(255,255,255,.6);}
.plan .price-note{font-size:12.5px;color:var(--muted);min-height:20px;}
.plan--hot .price-note{color:rgba(255,255,255,.55);}
.plan ul{margin:22px 0 26px;display:grid;gap:12px;}
.plan li{display:flex;gap:10px;font-size:14.5px;line-height:1.6;align-items:flex-start;}
.plan li svg{flex-shrink:0;margin-top:3px;color:var(--brand);}
.plan--hot li{color:rgba(255,255,255,.86);}
.plan .btn{margin-top:auto;}

/* 最新信息 */
.chip-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:32px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 16px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:#fff;font-size:13.5px;color:var(--muted);font-weight:500;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.chip:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-soft);}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.news-card:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:var(--shadow-lg);color:inherit;}
.news-cover{position:relative;overflow:hidden;background:#EEF0F4;}
.news-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform 320ms var(--ease);}
.news-card:hover .news-cover img{transform:scale(1.04);}
.news-badge{
  position:absolute;left:12px;top:12px;background:rgba(18,18,27,.86);color:#8FF0DE;
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:var(--r-pill);backdrop-filter:blur(4px);
}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.news-body h3{
  font-size:17px;font-weight:600;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  margin-top:10px;font-size:14px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12.5px;color:var(--muted);border-top:1px solid var(--line);
}
.news-foot svg{color:var(--brand-deep);transition:transform var(--dur) var(--ease);}
.news-card:hover .news-foot svg{transform:translateX(3px);}
.empty-state{
  grid-column:1/-1;border:1px dashed #C9CEDB;border-radius:var(--r-card);
  background:#fff;padding:56px 24px;text-align:center;
}
.empty-state svg{color:#9AA1B2;margin:0 auto 14px;}
.empty-state p{font-size:14.5px;color:var(--muted);margin-bottom:18px;}

/* FAQ */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:17px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-deep);}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--muted);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(45deg);border-color:var(--brand);color:var(--brand-deep);}
.faq-answer{padding:0 0 24px;font-size:15px;line-height:1.8;color:var(--muted);max-width:680px;}

/* 收口 CTA */
.cta-band{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:52px 48px;box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:26px;font-weight:700;}
.cta-band p{margin-top:10px;font-size:15px;color:var(--muted);}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* 页脚 */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.site-footer h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:.3px;}
.site-footer p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);}
.site-footer li{margin-bottom:11px;}
.site-footer li a{font-size:13.5px;color:rgba(255,255,255,.7);transition:color var(--dur) var(--ease);}
.site-footer li a:hover{color:var(--brand);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-text{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  display:flex;gap:10px;align-items:center;
  background:rgba(18,18,27,.94);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-pill);padding:8px;backdrop-filter:blur(8px);
  box-shadow:0 20px 44px -22px rgba(0,0,0,.8);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity 240ms var(--ease),transform 240ms var(--ease),visibility 240ms;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta .float-text{padding:0 8px 0 12px;font-size:13.5px;color:rgba(255,255,255,.8);white-space:nowrap;}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(10,10,17,.55);z-index:90;
  opacity:0;visibility:hidden;transition:opacity 220ms var(--ease),visibility 220ms;
}
.drawer-mask.show{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:280px;max-width:86vw;z-index:100;
  background:#fff;padding:22px;overflow-y:auto;
  transform:translateX(100%);transition:transform 240ms var(--ease);
  box-shadow:-20px 0 60px -30px rgba(0,0,0,.5);
}
.drawer.show{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-nav a{
  display:block;padding:13px 12px;border-radius:var(--r-btn);font-size:15px;font-weight:500;color:var(--text);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.active{background:var(--brand-soft);color:var(--brand-deep);}
.drawer-sub{margin-top:22px;padding-top:20px;border-top:1px solid var(--line);}
.drawer-sub h5{margin:0 0 10px;font-size:12.5px;letter-spacing:.6px;color:var(--muted);font-weight:600;}
.drawer .btn{margin-top:22px;}

@media (max-width:1024px){
  .nav-pills{display:none;}
  .nav-drawer-btn{display:inline-flex;}
  .hero-inner{grid-template-columns:1fr;gap:44px;padding:64px 0 60px;}
  .hero h1{font-size:32px;}
  .demo-grid,.proof-grid{grid-template-columns:1fr;gap:40px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .price-grid{grid-template-columns:1fr;max-width:520px;margin:0 auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:72px 0;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .topbar-tip{display:none;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:20px;}
  .hero h1{font-size:28px;}
  .hero .lede{font-size:16.5px;}
  .diff-grid{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr 1fr;}
  .cta-band{padding:36px 26px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{flex:1;}
  body{padding-bottom:76px;}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;border-left:0;border-right:0;border-bottom:0;
    padding:10px 16px;justify-content:space-between;gap:8px;
  }
  .float-cta .float-text{display:none;}
  .float-cta .btn{flex:1;justify-content:center;}
}
@media (max-width:520px){
  .news-grid{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-cards{padding-left:0;}
  .stack-card:nth-child(1){transform:none;opacity:1;}
  .stack-card:nth-child(2){transform:none;}
  .float-chip{position:static;margin-top:14px;right:auto;bottom:auto;}
  .sec-head h2{font-size:24px;}
  .chip-row{flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch;}
  .chip{flex:0 0 auto;}
}

/* roulang page: article */
:root{
  --primary:#12C7A4;
  --primary-deep:#0B8F77;
  --primary-soft:rgba(18,199,164,.12);
  --accent:#FF7A3D;
  --ink:#12121B;
  --ink-2:#1C1D2B;
  --bg:#F7F8FA;
  --surface:#FFFFFF;
  --line:#E6E8EE;
  --text:#1A1C25;
  --muted:#5B6070;
  --danger:#E5484D;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow:0 1px 2px rgba(18,18,27,.06), 0 8px 24px -12px rgba(18,18,27,.18);
  --shadow-soft:0 1px 2px rgba(18,18,27,.05), 0 12px 32px -20px rgba(18,18,27,.24);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease)}
ul,ol{margin:0;padding:0}
li{list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
svg{display:block}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
::selection{background:var(--primary-soft);color:var(--ink)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{background:var(--primary);color:#04211B;box-shadow:0 8px 20px -12px rgba(18,199,164,.9)}
.btn-primary:hover{background:#19D6B1;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary-deep);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#FF8B55;transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:999px;font-size:12px;font-weight:600;
  background:var(--primary-soft);color:var(--primary-deep);line-height:1.6;
}
.badge-neutral{background:#EEF0F4;color:var(--muted)}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);font-size:13px;color:var(--muted);
  transition:all .18s var(--ease);
}
.tag:hover{border-color:var(--primary);color:var(--primary-deep);background:var(--primary-soft)}

/* 顶部信息条 */
.topbar{background:var(--ink);color:rgba(255,255,255,.72);font-size:13px;height:36px;display:flex;align-items:center}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0}
.topbar-left strong{color:#fff;font-weight:600;letter-spacing:.3px}
.topbar-left span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:18px}
.topbar-right a:hover{color:var(--primary)}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease)}
.site-header.is-scrolled{box-shadow:0 10px 28px -22px rgba(18,18,27,.6)}
.nav{display:flex;align-items:center;gap:22px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:30px;height:30px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(135deg,#12C7A4,#0B8F77);
  display:flex;flex-direction:column;justify-content:center;align-items:center;gap:3px;
}
.logo-mark i{display:block;width:15px;height:2px;border-radius:2px;background:#fff;opacity:.95}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.2px}
.nav-pills{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-pills a{
  display:inline-flex;align-items:center;height:36px;padding:0 15px;border-radius:999px;
  font-size:14.5px;color:var(--muted);font-weight:500;
  transition:all .18s var(--ease);
}
.nav-pills a:hover{background:#F0F2F6;color:var(--ink)}
.nav-pills a.active{background:var(--primary-soft);color:var(--primary-deep);font-weight:600}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--muted);background:var(--surface);
  transition:all .18s var(--ease);
}
.icon-btn:hover{border-color:var(--primary);color:var(--primary-deep);background:var(--primary-soft)}
.nav-drawer-btn{display:none}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(18,18,27,.5);opacity:0;visibility:hidden;transition:all .22s var(--ease);z-index:90}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;width:280px;max-width:86vw;height:100%;
  background:var(--surface);z-index:100;transform:translateX(102%);
  transition:transform .26s var(--ease);display:flex;flex-direction:column;
  box-shadow:-20px 0 40px -24px rgba(18,18,27,.5);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.drawer-head .brand-text{font-size:16px}
.drawer nav{padding:14px 12px;display:flex;flex-direction:column;gap:4px;flex:1;overflow-y:auto}
.drawer nav a{padding:12px 14px;border-radius:10px;font-size:15px;color:var(--muted);font-weight:500}
.drawer nav a:hover{background:#F0F2F6;color:var(--ink)}
.drawer nav a.active{background:var(--primary-soft);color:var(--primary-deep);font-weight:600}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line)}

/* 主体 */
.page-main{padding:26px 0 88px}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--muted);min-height:22px}
.crumb a:hover{color:var(--primary-deep)}
.crumb .sep{color:#C3C7D1}
.crumb .current{color:var(--text);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-shell{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:48px;align-items:start;margin-top:22px}
.article-head{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:32px 34px;box-shadow:var(--shadow-soft);min-height:186px}
.article-head h1{font-size:34px;line-height:1.32;letter-spacing:-.5px;font-weight:700;color:var(--ink)}
.article-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:18px;font-size:13px;color:var(--muted)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3C7D1}
.article-lead{margin-top:16px;font-size:15.5px;color:var(--muted);line-height:1.85}

.article-body-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:34px 40px;margin-top:20px;box-shadow:var(--shadow-soft)}
.article-body{font-size:16px;line-height:1.9;color:var(--text);max-width:760px}
.article-body p{margin:0 0 1.2em}
.article-body h2{font-size:24px;line-height:1.4;font-weight:700;color:var(--ink);margin:2em 0 .8em;padding-left:14px;position:relative;letter-spacing:-.3px}
.article-body h2::before{content:"";position:absolute;left:0;top:.3em;width:4px;height:1em;border-radius:2px;background:var(--primary)}
.article-body h3{font-size:17px;font-weight:600;color:var(--ink);margin:1.6em 0 .6em}
.article-body h4{font-size:16px;font-weight:600;color:var(--ink);margin:1.4em 0 .5em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:4px}
.article-body li{position:relative;padding-left:20px;margin-bottom:.5em}
.article-body li::before{content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--primary)}
.article-body ol{counter-reset:olc}
.article-body ol li{counter-increment:olc}
.article-body ol li::before{content:counter(olc);width:auto;height:auto;background:none;color:var(--primary-deep);font-weight:700;font-size:14px;left:0;top:0}
.article-body blockquote{
  margin:1.4em 0;padding:16px 20px;background:var(--bg);
  border-left:3px solid var(--primary);border-radius:0 var(--radius-img) var(--radius-img) 0;color:#33363F;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-img);margin:1.4em auto;box-shadow:var(--shadow-soft)}
.article-body figure{margin:1.4em 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body a{color:var(--primary-deep);border-bottom:1px solid rgba(11,143,119,.35)}
.article-body a:hover{color:var(--primary);border-color:var(--primary)}
.article-body strong{font-weight:600;color:var(--ink)}
.article-body hr{border:0;height:1px;background:var(--line);margin:2em 0}
.article-body table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:1.4em 0;font-size:14.5px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap}
.article-body th{background:var(--bg);color:var(--ink);font-weight:600}
.article-body pre{background:var(--ink);color:#DDE1EA;border-radius:var(--radius-img);padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.7;margin:1.4em 0}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;background:#EEF0F4;padding:2px 6px;border-radius:6px;color:#0B8F77}
.article-body pre code{background:none;padding:0;color:inherit}

.empty-state{
  border:1px dashed #CDD2DC;border-radius:var(--radius-card);background:var(--surface);
  padding:56px 28px;text-align:center;margin-top:20px;
}
.empty-state .empty-icon{
  width:56px;height:56px;border-radius:16px;margin:0 auto 18px;
  background:var(--primary-soft);display:flex;align-items:center;justify-content:center;color:var(--primary-deep);
}
.empty-state h2{font-size:20px;font-weight:700;color:var(--ink)}
.empty-state p{margin:10px 0 22px;color:var(--muted);font-size:15px}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag-row .label{font-size:13px;color:var(--muted);align-self:center;margin-right:2px}

.pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:26px}
.pager-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 22px;transition:all .2s var(--ease);
}
.pager-card:hover{border-color:var(--primary);transform:translateY(-3px);box-shadow:var(--shadow)}
.pager-card .kicker{font-size:12px;color:var(--primary-deep);font-weight:600;letter-spacing:.4px}
.pager-card h3{font-size:16px;font-weight:600;color:var(--ink);margin-top:8px;line-height:1.6}
.pager-card p{font-size:13.5px;color:var(--muted);margin-top:6px}

.section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:52px 0 22px}
.section-title h2{font-size:24px;font-weight:700;color:var(--ink);letter-spacing:-.3px}
.section-title p{font-size:14px;color:var(--muted);margin-top:6px}
.section-title .more{font-size:14px;font-weight:600;color:var(--primary-deep);display:inline-flex;align-items:center;gap:6px}
.section-title .more:hover{color:var(--primary)}

.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{transform:translateY(-3px);border-color:var(--primary);box-shadow:var(--shadow)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EFF1F5}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-media .badge{position:absolute;top:12px;left:12px;background:rgba(18,18,27,.78);color:#fff;backdrop-filter:blur(2px)}
.card-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:16.5px;font-weight:600;line-height:1.55;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:13.5px;color:var(--muted);line-height:1.75;margin-top:10px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted)}
.card-foot .arrow{color:var(--primary-deep);transition:transform .2s var(--ease)}
.card:hover .card-foot .arrow{transform:translateX(3px)}

.back-bar{
  margin-top:34px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px 26px;
}
.back-bar p{font-size:14px;color:var(--muted)}
.back-bar strong{color:var(--ink);font-weight:600}

/* 侧边目录 */
.toc{position:sticky;top:96px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:18px 18px 20px;box-shadow:var(--shadow-soft)}
.toc h4{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.6px;margin-bottom:12px}
.toc ol{display:flex;flex-direction:column;gap:2px;counter-reset:toc}
.toc a{display:block;font-size:13.5px;line-height:1.6;color:var(--muted);padding:7px 10px;border-radius:8px;border-left:2px solid transparent}
.toc a:hover{background:#F4F6F9;color:var(--ink)}
.toc a.active{background:var(--primary-soft);color:var(--primary-deep);border-left-color:var(--primary);font-weight:600}
.toc .toc-note{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted);line-height:1.7}
.toc .toc-note a{display:inline;padding:0;border:0;background:none;color:var(--primary-deep);font-weight:600}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;display:flex;gap:10px;align-items:center;
  padding:10px;border-radius:999px;background:rgba(255,255,255,.96);
  border:1px solid var(--line);box-shadow:0 18px 40px -22px rgba(18,18,27,.6);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:all .24s var(--ease);
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}

/* 页脚 */
.site-footer{background:var(--ink);color:rgba(255,255,255,.66);padding:64px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-text{color:#fff;font-size:16.5px}
.site-footer h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px}
.site-footer p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6)}
.site-footer ul{display:flex;flex-direction:column;gap:10px}
.site-footer ul a{font-size:13.5px;color:rgba(255,255,255,.66)}
.site-footer ul a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.45);
}

@media (max-width:1024px){
  .article-shell{grid-template-columns:minmax(0,1fr)}
  .toc{display:none}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .nav-pills{display:none}
  .nav-drawer-btn{display:inline-flex}
  .topbar-left span{display:none}
  .article-head{padding:24px 20px;min-height:0}
  .article-head h1{font-size:26px}
  .article-body-wrap{padding:24px 20px}
  .article-body h2{font-size:21px}
  .pager{grid-template-columns:minmax(0,1fr)}
  .grid-3{grid-template-columns:minmax(0,1fr)}
  .section-title{flex-direction:column;align-items:flex-start;margin-top:44px}
  .page-main{padding-bottom:96px}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;padding:10px 14px;gap:10px;
    border-left:0;border-right:0;border-bottom:0;
  }
  .float-cta .btn{flex:1;height:42px;padding:0 10px;font-size:14px}
  body{padding-bottom:76px}
}
@media (max-width:520px){
  .article-head h1{font-size:22px;line-height:1.4}
  .article-meta{gap:8px}
  .crumb .current{max-width:180px}
  .footer-grid{grid-template-columns:1fr}
  .back-bar{padding:18px 18px}
  .back-bar .btn{width:100%}
}

/* roulang page: category1 */
:root{
  --brand:#12C7A4;
  --brand-deep:#0B8F77;
  --brand-soft:rgba(18,199,164,.12);
  --ink:#12121B;
  --ink-2:#1C1D2B;
  --accent:#FF7A3D;
  --bg:#F7F8FA;
  --card:#FFFFFF;
  --line:#E6E8EE;
  --text:#1A1C25;
  --muted:#5B6070;
  --danger:#E5484D;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow:0 1px 2px rgba(18,18,27,.06),0 8px 24px -12px rgba(18,18,27,.18);
  --shadow-lg:0 2px 6px rgba(18,18,27,.06),0 20px 44px -22px rgba(18,18,27,.32);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.3px;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
input{font:inherit}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:28px;font-weight:700}
.section-head p{margin-top:12px;color:var(--muted)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-deep);background:var(--brand-soft);border-radius:var(--r-pill);padding:5px 12px;margin-bottom:14px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* 顶部信息条 */
.topbar{background:var(--ink);height:36px;display:flex;align-items:center}
.topbar-inner{display:flex;align-items:center;gap:18px;width:100%}
.topbar-domain{color:#fff;font-weight:600;font-size:13px;letter-spacing:.3px}
.topbar-tip{font-size:13px;color:rgba(255,255,255,.62)}
.topbar-links{margin-left:auto;display:flex;align-items:center;gap:18px;font-size:13px}
.topbar-links a{color:rgba(255,255,255,.78);transition:color .18s var(--ease)}
.topbar-links a:hover{color:var(--brand)}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .18s var(--ease)}
.site-header.is-scrolled{box-shadow:0 8px 22px -16px rgba(18,18,27,.4)}
.nav{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;border-radius:10px}
.logo-mark{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,#12C7A4,#0B8F77);display:flex;flex-direction:column;justify-content:center;align-items:center;gap:3px;flex:0 0 auto}
.logo-mark i{display:block;width:14px;height:2px;border-radius:2px;background:#fff}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap}
.nav-pills{display:flex;align-items:center;gap:4px;margin-left:10px}
.nav-pills a{padding:8px 14px;border-radius:var(--r-pill);font-size:15px;color:var(--muted);transition:background .18s var(--ease),color .18s var(--ease)}
.nav-pills a:hover{background:#F1F2F6;color:var(--ink)}
.nav-pills a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{width:38px;height:38px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;display:inline-flex;align-items:center;justify-content:center;color:var(--muted);cursor:pointer;transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease)}
.icon-btn:hover{border-color:var(--brand);color:var(--brand-deep);background:#F6FFFC}
.nav-drawer-btn{display:none}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease)}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-primary{background:var(--brand);color:#04241E;box-shadow:0 10px 22px -14px rgba(18,199,164,.9)}
.btn-primary:hover{background:#1ED6B2;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-accent{background:var(--accent);color:#33130A}
.btn-accent:hover{background:#FF8E57;transform:translateY(-1px)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.1);transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn[disabled]{opacity:.45;pointer-events:none}

/* 抽屉 */
.drawer{position:fixed;top:0;right:0;height:100%;width:280px;max-width:86vw;background:#fff;z-index:92;transform:translateX(102%);transition:transform .26s var(--ease);display:flex;flex-direction:column;padding:18px 20px 24px;box-shadow:-18px 0 40px -26px rgba(18,18,27,.5)}
.drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line)}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-top:14px}
.drawer-links a{padding:12px 14px;border-radius:12px;font-size:16px;color:var(--text);transition:background .18s var(--ease),color .18s var(--ease)}
.drawer-links a:hover{background:#F1F2F6}
.drawer-links a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px}
.drawer-mask{position:fixed;inset:0;background:rgba(18,18,27,.46);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:91}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* 面包屑 */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.66);flex-wrap:wrap}
.crumb a{color:rgba(255,255,255,.78);transition:color .18s var(--ease)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:rgba(255,255,255,.35)}
.crumb .current{color:#fff}

/* 页面头图 */
.page-hero{position:relative;background-color:var(--ink);color:#fff;padding:44px 0 72px;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(18,18,27,.76),rgba(18,18,27,.9)),url(/assets/images/backpic/back-1.png);background-size:cover;background-position:center;z-index:0}
.page-hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:48px 48px;z-index:1;opacity:.5}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{margin-top:26px;font-size:36px;font-weight:700;line-height:1.25;color:#fff;max-width:820px}
.page-hero .lede{margin-top:16px;max-width:720px;font-size:17px;color:rgba(255,255,255,.82)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-tags span{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);font-size:13px;color:rgba(255,255,255,.86)}
.hero-tags span i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:block}

/* 要点图文 */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.step-list{display:flex;flex-direction:column;gap:26px;margin-top:32px}
.step-item{display:grid;grid-template-columns:52px 1fr;gap:16px}
.step-num{font-size:30px;font-weight:700;color:var(--brand);line-height:1;letter-spacing:-1px}
.step-item h3{font-size:18px;font-weight:600;margin-bottom:6px}
.step-item p{font-size:15px;color:var(--muted)}
.media-frame{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid var(--line);background:#fff}
.media-frame img{width:100%;aspect-ratio:4/3;object-fit:cover}
.media-caption{padding:16px 18px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);background:#fff}

/* 条目卡网格 */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.chip{display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;font-size:14px;color:var(--muted)}
.chip.is-on{background:var(--brand-soft);border-color:rgba(18,199,164,.4);color:var(--brand-deep);font-weight:600}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.entry-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease)}
.entry-card:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:var(--shadow-lg)}
.entry-card:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.entry-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EEF0F5}
.entry-media img{width:100%;height:100%;object-fit:cover;transition:transform .34s var(--ease)}
.entry-card:hover .entry-media img{transform:scale(1.04)}
.badge{position:absolute;left:12px;top:12px;display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-pill);background:rgba(18,18,27,.82);color:#fff;font-size:12px;font-weight:600;backdrop-filter:blur(2px)}
.badge.is-live{background:var(--brand);color:#04241E}
.badge.is-warn{background:var(--accent);color:#33130A}
.entry-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1 1 auto}
.entry-body h3{font-size:17px;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.entry-body p{margin-top:10px;font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.entry-meta{margin-top:auto;padding-top:16px;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);border-top:1px solid var(--line)}
.entry-meta .arrow{margin-left:auto;color:var(--brand);transition:transform .18s var(--ease)}
.entry-card:hover .entry-meta .arrow{transform:translateX(3px)}

/* 数据条 */
.metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.metric{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px 26px;box-shadow:var(--shadow)}
.metric .num{font-size:40px;font-weight:700;color:var(--brand-deep);line-height:1.1;letter-spacing:-1px}
.metric .num small{font-size:16px;font-weight:600;margin-left:6px;color:var(--muted);letter-spacing:0}
.metric .label{margin-top:10px;font-size:14px;color:var(--muted)}
.metric .desc{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);font-size:14px;color:var(--text)}

/* FAQ 式说明 */
.note-list{border-top:1px solid var(--line)}
.note-item{display:grid;grid-template-columns:180px 1fr;gap:24px;padding:22px 0;border-bottom:1px solid var(--line)}
.note-item h3{font-size:16px;font-weight:600}
.note-item p{font-size:15px;color:var(--muted)}

/* CTA */
.cta-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:48px;text-align:center;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}
.cta-card::before{content:"";position:absolute;right:-80px;top:-80px;width:240px;height:240px;border-radius:50%;background:radial-gradient(circle,rgba(18,199,164,.18),transparent 70%)}
.cta-card h2{font-size:28px;position:relative}
.cta-card > p{margin:14px auto 0;max-width:640px;color:var(--muted);position:relative}
.subscribe{position:relative;margin:26px auto 0;max-width:520px;display:flex;gap:12px}
.subscribe input{flex:1 1 auto;height:44px;padding:0 16px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;color:var(--text);transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.subscribe input::placeholder{color:#9AA0B0}
.subscribe input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,199,164,.18)}
.subscribe input.is-error{border-color:var(--danger);box-shadow:0 0 0 3px rgba(229,72,77,.14)}
.form-tip{margin-top:14px;font-size:13px;color:var(--muted);position:relative}
.form-tip.is-ok{color:var(--brand-deep);font-weight:600}
.form-tip.is-err{color:var(--danger);font-weight:600}
.cta-actions{position:relative;margin-top:22px;display:flex;flex-wrap:wrap;gap:12px;justify-content:center}

/* 页脚 */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-text{color:#fff}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.site-footer ul{display:flex;flex-direction:column;gap:10px}
.site-footer a{font-size:14px;color:rgba(255,255,255,.68);transition:color .18s var(--ease)}
.site-footer a:hover{color:var(--brand)}
.site-footer p{font-size:14px;line-height:1.8}
.footer-bottom{margin-top:56px;padding:22px 0;border-top:1px solid rgba(255,255,255,.09);display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:rgba(255,255,255,.5)}

/* 浮动 CTA */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:70;display:flex;gap:10px;padding:10px;border-radius:var(--r-pill);background:rgba(18,18,27,.92);border:1px solid rgba(255,255,255,.1);box-shadow:0 20px 40px -22px rgba(18,18,27,.7);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease)}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none}

/* 响应式 */
@media (max-width:1024px){
  .section{padding:72px 0}
  .nav-pills{display:none}
  .nav-drawer-btn{display:inline-flex}
  .split{grid-template-columns:1fr;gap:32px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .page-hero h1{font-size:32px}
}
@media (max-width:768px){
  .metrics{grid-template-columns:1fr}
  .note-item{grid-template-columns:1fr;gap:8px}
  .cta-card{padding:32px 22px}
  .page-hero{padding:32px 0 56px}
  .nav-actions .btn{display:none}
  .float-cta{right:0;left:0;bottom:0;border-radius:0;padding:10px 16px;justify-content:stretch}
  .float-cta .btn{flex:1 1 0}
  body.has-float{padding-bottom:76px}
  .site-footer{padding-top:56px;margin-top:72px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .card-grid{grid-template-columns:1fr}
  .page-hero h1{font-size:28px}
  .page-hero .lede{font-size:16px}
  .subscribe{flex-direction:column}
  .subscribe .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .topbar-tip{display:none}
  .topbar-links a:first-child{display:none}
}

/* roulang page: category2 */
:root{
  --brand:#12C7A4;
  --brand-dark:#0B8F77;
  --brand-soft:rgba(18,199,164,.10);
  --accent:#FF7A3D;
  --accent-dark:#E8641F;
  --ink:#12121B;
  --ink-2:#1C1D2B;
  --bg:#F7F8FA;
  --card:#FFFFFF;
  --line:#E6E8EE;
  --text:#1A1C25;
  --muted:#5B6070;
  --danger:#E5484D;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow:0 1px 2px rgba(18,18,27,.06),0 8px 24px -12px rgba(18,18,27,.18);
  --shadow-lg:0 2px 4px rgba(18,18,27,.06),0 18px 44px -18px rgba(18,18,27,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color 180ms var(--ease),background-color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);}
button{font:inherit;cursor:pointer;}
input{font:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.2px;}
h1{font-size:36px;letter-spacing:-.5px;line-height:1.25;}
h2{font-size:28px;}
h3{font-size:20px;font-weight:600;}
h4{font-size:17px;font-weight:600;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-sm{padding:72px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-dark);
  background:var(--brand-soft);border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-head p{color:var(--muted);font-size:15px;margin:10px 0 0;max-width:620px;}
.text-link{color:var(--brand-dark);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;}
.text-link:hover{color:var(--brand);}
.text-link svg{transition:transform 180ms var(--ease);}
.text-link:hover svg{transform:translateX(3px);}

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  font-size:13px;
  height:36px;
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:36px;gap:20px;}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
.topbar-domain{color:var(--brand);font-weight:600;letter-spacing:.4px;}
.topbar-tip{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:rgba(255,255,255,.6);}
.topbar-right{display:flex;align-items:center;gap:18px;}
.topbar-right a:hover{color:var(--brand);}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow 220ms var(--ease);
}
.site-header.scrolled{box-shadow:0 6px 22px -14px rgba(18,18,27,.45);}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(135deg,#12C7A4 0%,#0B8F77 100%);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  box-shadow:0 6px 14px -8px rgba(18,199,164,.9);
}
.logo-mark i{display:block;width:14px;height:2px;border-radius:2px;background:rgba(255,255,255,.95);}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.2px;color:var(--ink);}
.nav-pills{
  display:flex;align-items:center;gap:4px;
  background:var(--bg);border-radius:var(--r-pill);
  padding:4px;border:1px solid var(--line);
}
.nav-pills a{
  font-size:14px;font-weight:600;color:var(--muted);
  padding:8px 16px;border-radius:var(--r-pill);
}
.nav-pills a:hover{color:var(--ink);background:rgba(255,255,255,.8);}
.nav-pills a.active{background:#fff;color:var(--brand-dark);box-shadow:var(--shadow);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;color:var(--muted);
}
.icon-btn:hover{color:var(--brand-dark);border-color:var(--brand);background:var(--brand-soft);}
.nav-drawer-btn{display:none;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:all 180ms var(--ease);white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--brand);color:#08201B;box-shadow:0 10px 22px -14px rgba(18,199,164,.95);}
.btn-primary:hover{background:#19d6b1;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);background:var(--brand-dark);color:#fff;}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 22px -14px rgba(255,122,61,.95);}
.btn-accent:hover{background:#ff8a53;transform:translateY(-1px);}
.btn-accent:active{transform:translateY(0);background:var(--accent-dark);}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink);}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-dark);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0);}
.btn-light{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.28);color:#fff;}
.btn-light:hover{background:rgba(255,255,255,.14);transform:translateY(-1px);}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;}

/* ============ 面包屑 ============ */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:20px;flex-wrap:wrap;}
.crumb a:hover{color:var(--brand);}
.crumb .sep{opacity:.5;}
.crumb .current{color:#fff;font-weight:600;}

/* ============ Hero ============ */
.hero{
  position:relative;
  background-color:var(--ink);
  background-image:linear-gradient(rgba(18,18,27,.72),rgba(18,18,27,.86)),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  color:#fff;
  padding:80px 0 88px;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 82%);
}
.hero-inner{position:relative;z-index:2;max-width:840px;}
.hero h1{color:#fff;}
.hero h1 span{color:var(--brand);}
.hero-sub{
  font-size:18px;line-height:1.65;color:rgba(255,255,255,.78);
  margin:20px 0 0;max-width:700px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;
  margin-top:52px;padding-top:28px;border-top:1px solid rgba(255,255,255,.12);
}
.hero-stats .num{font-size:26px;font-weight:700;color:var(--brand);letter-spacing:-.4px;}
.hero-stats .num small{font-size:14px;font-weight:600;margin-left:2px;color:rgba(18,199,164,.85);}
.hero-stats .lbl{font-size:13px;color:rgba(255,255,255,.6);margin-top:2px;}

/* ============ 主内容双栏 ============ */
.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:56px;align-items:start;}
.side-col{position:sticky;top:96px;}

/* ============ 交错图文行 ============ */
.flow-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:40px;align-items:center;
  padding:36px 0;border-top:1px solid var(--line);
}
.flow-row:first-child{border-top:0;padding-top:0;}
.flow-row:last-child{padding-bottom:0;}
.flow-row.reverse .flow-media{order:2;}
.flow-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-img);box-shadow:var(--shadow);
  transition:transform 260ms var(--ease),box-shadow 260ms var(--ease);
}
.flow-row:hover .flow-media img{transform:scale(1.02);box-shadow:var(--shadow-lg);}
.flow-body h3{margin:14px 0 12px;}
.flow-body p{color:var(--muted);font-size:15px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;letter-spacing:.2px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand-dark);
}
.tag-warm{background:rgba(255,122,61,.12);color:var(--accent-dark);}
.check-list{list-style:none;margin-top:16px;display:grid;gap:10px;}
.check-list li{position:relative;padding-left:26px;font-size:14.5px;color:var(--text);}
.check-list li::before{
  content:"";position:absolute;left:0;top:6px;width:16px;height:16px;border-radius:50%;
  background:var(--brand-soft);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230B8F77' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E");
  background-size:11px 11px;background-position:center;background-repeat:no-repeat;
}
.check-list li b{color:var(--ink);font-weight:600;}

/* ============ 时间线 ============ */
.timeline{
  background:var(--ink-2);color:#fff;
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-card);
  padding:28px 24px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
}
.timeline h3{font-size:18px;color:#fff;}
.timeline .tl-sub{font-size:13px;color:rgba(255,255,255,.55);margin:6px 0 22px;}
.timeline ul{list-style:none;position:relative;padding-left:22px;}
.timeline ul::before{content:"";position:absolute;left:5px;top:8px;bottom:16px;width:1px;background:rgba(18,199,164,.35);}
.timeline li{position:relative;padding-bottom:22px;}
.timeline li:last-child{padding-bottom:0;}
.timeline li::before{
  content:"";position:absolute;left:-22px;top:6px;width:11px;height:11px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 4px rgba(18,199,164,.18);
}
.timeline .tl-time{font-size:12.5px;font-weight:600;color:var(--brand);letter-spacing:.4px;}
.timeline .tl-title{font-size:14.5px;font-weight:600;margin-top:4px;color:#fff;}
.timeline .tl-desc{font-size:13px;color:rgba(255,255,255,.58);line-height:1.7;margin-top:4px;}
.timeline .tl-note{
  margin-top:22px;padding-top:18px;border-top:1px solid rgba(255,255,255,.1);
  font-size:12.5px;color:rgba(255,255,255,.5);
}

/* ============ 数据条 ============ */
.stat-band{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.stat-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 26px;box-shadow:var(--shadow);
  transition:transform 180ms var(--ease),border-color 180ms var(--ease);
}
.stat-card:hover{transform:translateY(-3px);border-color:var(--brand);}
.stat-card .num{font-size:40px;font-weight:700;color:var(--brand-dark);line-height:1;letter-spacing:-1px;}
.stat-card .num small{font-size:16px;font-weight:600;color:var(--brand);margin-left:4px;letter-spacing:0;}
.stat-card .lbl{font-size:14px;font-weight:600;margin-top:12px;color:var(--ink);}
.stat-card .txt{font-size:13.5px;color:var(--muted);margin-top:6px;line-height:1.7;}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--ink);
}
.faq-q:hover{color:var(--brand-dark);}
.faq-q .plus{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand-dark);transition:transform 200ms var(--ease),background-color 200ms var(--ease);
}
.faq-item.open .faq-q .plus{transform:rotate(45deg);background:var(--brand-soft);border-color:var(--brand);}
.faq-a{display:none;padding:0 0 24px;font-size:15px;line-height:1.8;color:var(--muted);max-width:700px;}
.faq-item.open .faq-a{display:block;}

/* ============ CTA ============ */
.cta-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:56px 48px;box-shadow:var(--shadow-lg);
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:48px;align-items:center;
}
.cta-card h2{margin-bottom:14px;}
.cta-card .lead{color:var(--muted);font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.subscribe{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-card);padding:28px 26px;
}
.subscribe h4{margin-bottom:8px;}
.subscribe p{font-size:13.5px;color:var(--muted);}
.subscribe form{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap;}
.subscribe input{
  flex:1 1 200px;min-width:0;height:44px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--text);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.subscribe input::placeholder{color:#9AA0B0;}
.subscribe input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,199,164,.16);}
.form-hint{font-size:12.5px;color:var(--muted);margin-top:12px;display:flex;align-items:center;gap:6px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.68);padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;}
.site-footer ul{list-style:none;display:grid;gap:10px;}
.site-footer a{font-size:14px;color:rgba(255,255,255,.68);}
.site-footer a:hover{color:var(--brand);}
.site-footer p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.55);}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ============ 浮动 CTA / 吸底条 / 抽屉 ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  display:flex;gap:10px;padding:10px;
  background:rgba(255,255,255,.92);backdrop-filter:blur(8px);
  border:1px solid var(--line);border-radius:var(--r-pill);box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity 240ms var(--ease),transform 240ms var(--ease),visibility 240ms;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;gap:10px;
  padding:12px 16px;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-top:1px solid var(--line);box-shadow:0 -10px 30px -20px rgba(18,18,27,.5);
}
.mobile-bar .btn{flex:1;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,18,27,.5);z-index:90;
  opacity:0;visibility:hidden;transition:opacity 220ms var(--ease),visibility 220ms;
}
.drawer-mask.show{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:280px;max-width:86vw;z-index:100;
  background:#fff;padding:20px;display:flex;flex-direction:column;gap:18px;
  transform:translateX(100%);transition:transform 260ms var(--ease);
  box-shadow:-20px 0 50px -30px rgba(18,18,27,.6);
}
.drawer.show{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-nav{display:grid;gap:6px;}
.drawer-nav a{
  padding:12px 14px;border-radius:var(--r-btn);font-size:15px;font-weight:600;color:var(--muted);
  border:1px solid transparent;
}
.drawer-nav a:hover{background:var(--bg);color:var(--ink);}
.drawer-nav a.active{background:var(--brand-soft);color:var(--brand-dark);border-color:rgba(18,199,164,.35);}
.drawer .btn{margin-top:auto;width:100%;}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .section{padding:72px 0;}
  .section-sm{padding:56px 0;}
  .nav-pills{display:none;}
  .nav-drawer-btn{display:inline-flex;}
  .content-grid{grid-template-columns:minmax(0,1fr);gap:40px;}
  .side-col{position:static;}
  .cta-card{grid-template-columns:minmax(0,1fr);padding:44px 34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .hero{padding:64px 0 72px;}
}
@media (max-width:768px){
  h1{font-size:28px;}
  h2{font-size:24px;}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .stat-band{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow-row{grid-template-columns:minmax(0,1fr);gap:22px;}
  .flow-row.reverse .flow-media{order:0;}
  .float-cta{display:none;}
  .mobile-bar{display:flex;}
  body{padding-bottom:76px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
}
@media (max-width:520px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section-sm{padding:48px 0;}
  .topbar-tip{display:none;}
  .hero{padding:52px 0 60px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-band{grid-template-columns:minmax(0,1fr);}
  .cta-card{padding:32px 22px;}
  .cta-actions .btn{width:100%;}
  .subscribe form .btn{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}