/* roulang page: index */
:root{
  --c-primary:#1667E8;
  --c-primary-600:#0F55C4;
  --c-primary-050:#EAF1FE;
  --c-accent:#00B39F;
  --c-accent-050:#E6F8F5;
  --c-ink:#0E1B33;
  --c-ink-2:#43536E;
  --c-ink-3:#7A88A0;
  --c-bg:#F5F8FC;
  --c-surface:#FFFFFF;
  --c-line:#E4EAF3;
  --c-success:#12A150;
  --c-warn:#E08C1F;
  --c-danger:#E0483C;
  --c-disabled:#C9D3E2;
  --f-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-num:"Inter","SF Pro Display",system-ui,sans-serif;
  --r-s:8px; --r-m:12px; --r-l:18px; --r-xl:26px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,27,51,.04);
  --sh-2:0 8px 24px rgba(14,27,51,.06);
  --sh-3:0 18px 48px rgba(20,60,140,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--c-bg);color:var(--c-ink-2);
  font-family:var(--f-sans);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color 180ms var(--ease)}
a:hover{color:var(--c-primary-600)}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input,textarea,select{font-family:inherit;font-size:15px}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:0;box-shadow:0 0 0 3px rgba(22,103,232,.18);border-radius:var(--r-s)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding-bottom:20px;border-bottom:1px solid var(--c-line);margin-bottom:40px}
.sec-head h2{font-size:clamp(24px,3vw,34px)}
.sec-head p{margin-top:10px;font-size:15px;color:var(--c-ink-3);max-width:620px}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);white-space:nowrap}
.text-link svg{transition:transform 180ms var(--ease)}
.text-link:hover svg{transform:translateX(3px)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--c-primary-050);color:var(--c-primary);font-size:14px;font-weight:600;padding:7px 14px;border-radius:var(--r-pill)}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 4px rgba(0,179,159,.16)}
.badge{display:inline-flex;align-items:center;background:var(--c-accent-050);color:#0A7D70;font-size:12.5px;line-height:1.6;padding:4px 10px;border-radius:var(--r-pill);font-weight:600}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-m);font-size:15px;font-weight:600;transition:all 180ms var(--ease);white-space:nowrap}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-primary-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;color:var(--c-ink);border:1px solid var(--c-line)}
.btn-ghost:hover{color:var(--c-primary);border-color:rgba(22,103,232,.32)}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* 顶部导航 */
.topline{height:2px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent))}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--c-line);transition:box-shadow 180ms var(--ease)}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:24px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--c-ink)}
.logo:hover{color:var(--c-ink)}
.logo-mark{width:28px;height:28px;flex:0 0 28px;position:relative;border-radius:9px;background:var(--c-primary);overflow:hidden}
.logo-mark::after{content:"";position:absolute;right:-6px;bottom:-6px;width:20px;height:20px;background:var(--c-accent);border-radius:6px;transform:rotate(18deg)}
.logo-mark span{position:absolute;left:7px;top:6px;width:9px;height:9px;border-radius:3px;background:#fff;z-index:1}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--c-ink-2);padding:6px 0}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform 180ms var(--ease)}
.nav-link:hover{color:var(--c-ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-ink);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.cmd-search{position:relative;display:flex;align-items:center;width:220px;height:36px;background:#F2F6FC;border:1px solid transparent;border-radius:10px;padding:0 8px 0 10px;transition:all 180ms var(--ease)}
.cmd-search:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(22,103,232,.18)}
.cmd-search svg{flex:0 0 auto;color:var(--c-ink-3)}
.cmd-search input{flex:1;min-width:0;border:0;background:transparent;outline:0;font-size:14px;color:var(--c-ink);padding:0 8px}
.cmd-search input::placeholder{color:var(--c-ink-3)}
.kbd{font-family:var(--f-num);font-size:11.5px;color:var(--c-ink-3);border:1px solid var(--c-line);border-radius:6px;padding:1px 6px;background:#fff}
.nav-sub{font-size:14px;font-weight:500;color:var(--c-ink-2)}
.nav-sub:hover{color:var(--c-primary)}
.menu-btn{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);background:#fff;align-items:center;justify-content:center;color:var(--c-ink)}
.drawer-mask{position:fixed;inset:0;background:rgba(14,27,51,.35);opacity:0;visibility:hidden;transition:opacity 220ms var(--ease);z-index:110}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:320px;max-width:86vw;background:#fff;z-index:120;transform:translateX(102%);transition:transform 220ms var(--ease);padding:22px;display:flex;flex-direction:column;gap:20px;overflow-y:auto}
.drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--c-line);display:flex;align-items:center;justify-content:center;color:var(--c-ink)}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{padding:13px 12px;border-radius:10px;color:var(--c-ink-2);font-size:15px;font-weight:500}
.drawer-nav a:hover{background:var(--c-primary-050);color:var(--c-primary)}
.drawer-nav a.is-active{background:var(--c-primary-050);color:var(--c-primary);font-weight:700}
.drawer-search{display:flex;align-items:center;height:44px;background:#F2F6FC;border-radius:12px;padding:0 12px;gap:8px}
.drawer-search input{flex:1;border:0;background:transparent;outline:0;font-size:15px}

/* Hero */
.hero{position:relative;overflow:hidden;padding:76px 0 88px;background:
  radial-gradient(720px 420px at 88% -8%,rgba(22,103,232,.10),transparent 70%),
  radial-gradient(560px 380px at 4% 108%,rgba(0,179,159,.08),transparent 70%),
  var(--c-bg)}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(14,27,51,.10) 1px,transparent 1px);background-size:22px 22px;opacity:.35;pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center}
.hero-title{font-size:clamp(30px,4.2vw,46px);line-height:1.25;margin:22px 0 18px}
.hero-sub{font-size:18px;line-height:1.85;color:var(--c-ink-2);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.trust-list{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:32px;padding-top:24px;border-top:1px solid var(--c-line)}
.trust-list li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-2)}
.trust-list svg{color:var(--c-accent);flex:0 0 auto}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-xl);box-shadow:var(--sh-2)}
.login-card{position:absolute;right:-14px;bottom:-18px;width:300px;background:#fff;border-radius:var(--r-l);box-shadow:var(--sh-3);padding:24px;border:1px solid var(--c-line)}
.login-card h3{font-size:17px;margin-bottom:4px}
.login-card .hint{font-size:12.5px;color:var(--c-ink-3);margin-bottom:16px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--c-ink);margin-bottom:6px}
.field input{width:100%;height:44px;border:1px solid var(--c-line);border-radius:var(--r-m);padding:0 13px;outline:0;transition:all 180ms var(--ease);color:var(--c-ink)}
.field input::placeholder{color:var(--c-ink-3)}
.field input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(22,103,232,.18)}
.login-card .assist{display:flex;justify-content:space-between;gap:12px;margin-top:14px;font-size:12.5px}

/* 卖点 */
.feature-grid{display:grid;grid-template-columns:5fr 7fr;gap:24px;align-items:stretch}
.card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);box-shadow:var(--sh-1);padding:28px;transition:all 180ms var(--ease)}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(22,103,232,.22)}
.card-lg{display:flex;flex-direction:column;gap:16px;padding:32px;border-radius:var(--r-xl)}
.num{font-family:var(--f-num);font-size:13px;font-weight:600;color:var(--c-ink-3);letter-spacing:.06em}
.icon-block{width:40px;height:40px;border-radius:10px;background:rgba(22,103,232,.08);color:var(--c-primary);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.card-lg h3{font-size:21px}
.point-list{margin-top:4px}
.point-list li{position:relative;padding-left:16px;font-size:14px;line-height:1.9;color:var(--c-ink-2)}
.point-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--c-primary)}
.card-lg img{aspect-ratio:4/3;object-fit:cover;border-radius:14px;margin-top:auto}
.row-stack{display:flex;flex-direction:column;gap:24px}
.card-row{display:flex;gap:18px;align-items:flex-start;height:100%}
.card-row h3{font-size:17px;margin-bottom:6px}
.card-row p{font-size:14px;line-height:1.75;color:var(--c-ink-2)}
.row-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}

/* 场景 tabs */
.scene-wrap{display:grid;grid-template-columns:240px 1fr;gap:28px;align-items:start}
.tab-list{display:flex;flex-direction:column;gap:6px}
.tab-btn{text-align:left;padding:14px 16px;border-radius:var(--r-m);font-size:15px;font-weight:500;color:var(--c-ink-2);border-left:3px solid transparent;transition:all 180ms var(--ease)}
.tab-btn:hover{background:#fff;color:var(--c-ink)}
.tab-btn.is-active{background:#fff;border-left-color:var(--c-primary);color:var(--c-ink);font-weight:700;box-shadow:var(--sh-1)}
.scene-panel{background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-l);padding:28px}
.scene-panel h3{font-size:19px;margin-bottom:8px}
.scene-panel p{font-size:15px;line-height:1.85}
.step-list{margin:18px 0 20px;counter-reset:st}
.step-list li{position:relative;padding:10px 0 10px 40px;font-size:15px;color:var(--c-ink-2);border-bottom:1px dashed var(--c-line)}
.step-list li:last-child{border-bottom:0}
.step-list li::before{counter-increment:st;content:counter(st,decimal-leading-zero);position:absolute;left:0;top:11px;font-family:var(--f-num);font-size:13px;font-weight:600;color:var(--c-primary);background:var(--c-primary-050);border-radius:8px;padding:2px 7px}
.panel-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--c-ink-3);flex-wrap:wrap}
.panel-shot{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px;border:1px solid var(--c-line);margin:16px 0 4px}
.scene-panel.is-hidden{display:none}

/* 数据与口碑 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:26px 0;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.stat{position:relative;padding-left:24px;border-left:1px solid var(--c-line)}
.stat:first-child{border-left:0;padding-left:0}
.stat b{display:block;font-family:var(--f-num);font-size:32px;line-height:1.2;color:var(--c-primary);font-variant-numeric:tabular-nums}
.stat span{font-size:12.5px;color:var(--c-ink-3)}
.partners{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;margin-top:34px}
.partner{height:62px;border:1px solid var(--c-line);border-radius:var(--r-m);background:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--c-ink-3);opacity:.55;transition:all 180ms var(--ease)}
.partner:hover{opacity:1;border-color:rgba(22,103,232,.22);color:var(--c-ink-2)}
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:34px;align-items:start}
.quote{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);box-shadow:var(--sh-1);padding:26px;transition:all 180ms var(--ease)}
.quote:hover{box-shadow:var(--sh-2)}
.quote:nth-child(2){transform:translateY(-16px)}
.quote .mark{font-family:var(--f-num);font-size:34px;line-height:1;color:var(--c-accent)}
.quote p{margin:12px 0 18px;font-size:15px;line-height:1.85;color:var(--c-ink-2)}
.quote .who{display:flex;align-items:center;gap:12px;padding-top:16px;border-top:1px solid var(--c-line)}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--c-primary-050);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;flex:0 0 40px}
.who span{font-size:12.5px;color:var(--c-ink-3);display:block}

/* 资讯列表 */
.news-lead{display:grid;grid-template-columns:5fr 7fr;gap:28px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-xl);box-shadow:var(--sh-1);overflow:hidden;transition:all 180ms var(--ease)}
.news-lead:hover{box-shadow:var(--sh-2);border-color:rgba(22,103,232,.22)}
.news-lead img{width:100%;height:100%;aspect-ratio:16/9;object-fit:cover}
.news-lead .body{padding:30px 32px;display:flex;flex-direction:column;gap:12px}
.news-lead h3{font-size:22px;line-height:1.45}
.news-lead p{font-size:14.5px;line-height:1.8;color:var(--c-ink-2)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.news-card{position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;transition:all 180ms var(--ease)}
.news-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(22,103,232,.22)}
.news-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.news-card .body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-card h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card p{font-size:14px;line-height:1.7;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line)}
.meta time{font-family:var(--f-num);font-size:12.5px;color:var(--c-ink-3);font-variant-numeric:tabular-nums}
.arrow-ic{color:var(--c-primary);transition:transform 180ms var(--ease)}
.news-card:hover .arrow-ic,.news-lead:hover .arrow-ic{transform:translateX(3px)}
.empty-state{background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-l);padding:52px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px}
.empty-state svg{color:var(--c-line)}
.empty-state p{font-size:14.5px;color:var(--c-ink-3)}
.skeleton{border-radius:var(--r-l);height:280px;background:linear-gradient(90deg,#EEF3FA 25%,#F7FAFE 37%,#EEF3FA 63%);background-size:400% 100%;animation:sk 1.4s ease infinite}
@keyframes sk{0%{background-position:100% 0}100%{background-position:0 0}}

/* FAQ */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:14px;margin-bottom:10px;overflow:hidden;transition:all 180ms var(--ease)}
.faq-item[open]{border-left:3px solid var(--c-accent);background:#FAFCFF}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;font-size:16px;font-weight:600;color:var(--c-ink)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .pm{position:relative;width:16px;height:16px;flex:0 0 16px}
.faq-item summary .pm::before,.faq-item summary .pm::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:transform 180ms var(--ease)}
.faq-item summary .pm::before{left:0;top:7px;width:16px;height:2px}
.faq-item summary .pm::after{left:7px;top:0;width:2px;height:16px}
.faq-item[open] summary .pm::after{transform:scaleY(0)}
.faq-item .ans{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--c-ink-2)}

/* 底部 CTA */
.cta-band{position:relative;overflow:hidden;background:var(--c-primary-050);border-radius:var(--r-xl);padding:56px;display:flex;align-items:center;justify-content:space-between;gap:32px}
.cta-band h2{font-size:clamp(22px,2.6vw,32px)}
.cta-band p{margin-top:12px;font-size:15.5px;color:var(--c-ink-2);max-width:520px}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.cta-band .arc{position:absolute;right:-60px;bottom:-90px;width:280px;height:280px;border:2px solid rgba(0,179,159,.35);border-radius:50%;pointer-events:none}

/* 页脚 */
.site-footer{background:#F2F6FC;border-top:1px solid var(--c-line);margin-top:96px;padding:64px 0 88px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:var(--c-ink-3);max-width:300px}
.footer-brand .contact{margin-top:16px;font-size:13.5px;color:var(--c-ink-2)}
.footer-col h4{font-size:14.5px;margin-bottom:14px}
.footer-col li{margin-bottom:9px}
.footer-col a{font-size:14px;color:var(--c-ink-3)}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline}
.footer-bottom{margin-top:44px;padding-top:22px;border-top:1px solid var(--c-line);display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-ink-3)}
.footer-bottom a{color:var(--c-ink-3)}
.footer-bottom a:hover{color:var(--c-primary);text-decoration:underline}

/* 底部转化条 */
.sticky-bar{position:fixed;left:50%;bottom:20px;transform:translate(-50%,16px);width:min(560px,calc(100% - 40px));height:60px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);box-shadow:var(--sh-3);display:flex;align-items:center;gap:14px;padding:0 14px 0 22px;z-index:90;opacity:0;visibility:hidden;transition:all 200ms var(--ease)}
.sticky-bar.is-show{opacity:1;visibility:visible;transform:translate(-50%,0)}
.sticky-bar .txt{font-size:13.5px;color:var(--c-ink);font-weight:600;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sticky-close{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--c-ink-3);flex:0 0 32px}
.sticky-close:hover{background:var(--c-bg);color:var(--c-ink)}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .card:hover,.news-card:hover,.btn-primary:hover{transform:none}
}

@media (max-width:1200px){
  .nav-links{gap:18px}
  .cmd-search{width:170px}
}
@media (max-width:1024px){
  .nav-links,.cmd-search,.nav-sub{display:none}
  .menu-btn{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:64px}
  .hero-sub{max-width:none}
  .feature-grid{grid-template-columns:1fr}
  .scene-wrap{grid-template-columns:1fr}
  .tab-list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:4px;scrollbar-width:none}
  .tab-list::-webkit-scrollbar{display:none}
  .tab-btn{white-space:nowrap;border-left:0;border-bottom:3px solid transparent;border-radius:var(--r-m) var(--r-m) 0 0;background:#fff;box-shadow:var(--sh-1)}
  .tab-btn.is-active{border-left:0;border-bottom-color:var(--c-primary)}
  .stats{grid-template-columns:repeat(2,1fr);gap:20px}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .partners{grid-template-columns:repeat(3,1fr)}
  .quotes{grid-template-columns:1fr 1fr}
  .quote:nth-child(2){transform:none}
  .news-lead{grid-template-columns:1fr}
  .news-lead img{aspect-ratio:16/9}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section--tight{padding:56px 0}
  .hero{padding:52px 0 68px}
  .hero::before{display:none}
  .login-card{position:static;width:100%;margin-top:20px;box-shadow:var(--sh-2)}
  .hero-visual img{border-radius:var(--r-l)}
  .news-grid{grid-template-columns:1fr}
  .quotes{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .stat{border-left:0;padding-left:0;padding-bottom:14px;border-bottom:1px solid var(--c-line)}
  .stat:last-child{border-bottom:0}
  .partners{grid-template-columns:repeat(2,1fr)}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .sticky-bar{left:0;right:0;bottom:0;transform:translateY(100%);width:100%;border-radius:0;height:auto;min-height:60px;padding:10px 14px calc(10px + env(safe-area-inset-bottom,0px)) 18px}
  .sticky-bar.is-show{transform:none}
  .site-footer{padding-bottom:96px}
}
@media (max-width:520px){
  .hero-title{font-size:28px}
  .btn{width:100%}
  .hero-actions{flex-direction:column}
  .cta-actions{width:100%}
  .faq-item summary{font-size:15px;padding:16px}
  .footer-grid{grid-template-columns:1fr}
  .logo{font-size:15.5px}
}

/* roulang page: category1 */
:root{
  --c-primary:#1667E8;
  --c-primary-600:#0F55C4;
  --c-primary-050:#EAF1FE;
  --c-accent:#00B39F;
  --c-accent-050:#E6F8F5;
  --c-ink:#0E1B33;
  --c-ink-2:#43536E;
  --c-ink-3:#7A88A0;
  --c-bg:#F5F8FC;
  --c-surface:#FFFFFF;
  --c-line:#E4EAF3;
  --c-success:#12A150;
  --c-warn:#E08C1F;
  --c-danger:#E0483C;
  --c-disabled:#C9D3E2;
  --r-s:8px; --r-m:12px; --r-l:18px; --r-xl:26px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,27,51,.04);
  --sh-2:0 8px 24px rgba(14,27,51,.06);
  --sh-3:0 18px 48px rgba(20,60,140,.10);
  --f-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-num:Inter,"SF Pro Display",system-ui,-apple-system,sans-serif;
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp-4:4px; --sp-8:8px; --sp-12:12px; --sp-16:16px; --sp-24:24px;
  --sp-32:32px; --sp-48:48px; --sp-64:64px; --sp-88:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--f-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.3}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25;letter-spacing:-.01em}
h2{font-size:clamp(24px,3vw,34px);line-height:1.3;letter-spacing:-.01em}
h3{font-size:21px;line-height:1.45}
p{margin:0}
a{color:var(--c-primary);text-decoration:none;transition:color 180ms var(--ease)}
a:hover{color:var(--c-primary-600)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(22,103,232,.18)}
::selection{background:var(--c-primary-050);color:var(--c-ink)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{margin-bottom:32px}
.section-head h2{max-width:760px}
.section-head p{margin-top:14px;font-size:17px;color:var(--c-ink-2);max-width:760px}
.divider{height:1px;background:var(--c-line);border:0;margin:0}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow 180ms var(--ease);
}
.site-header::before{
  content:"";display:block;height:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:24px;height:64px}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:700;letter-spacing:-.01em;font-size:17px;color:var(--c-ink);
  white-space:nowrap;
}
.logo:hover{color:var(--c-ink)}
.logo-mark{
  position:relative;width:28px;height:28px;flex:0 0 28px;
  border-radius:9px;background:var(--c-primary);overflow:hidden;
}
.logo-mark span{
  position:absolute;right:-6px;bottom:-6px;width:18px;height:18px;
  background:var(--c-accent);border-radius:4px;transform:rotate(45deg);
}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-link{
  position:relative;padding:8px 12px;font-size:14.5px;font-weight:500;color:var(--c-ink-2);
  border-radius:var(--r-s);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--c-primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform 180ms var(--ease);
}
.nav-link:hover{color:var(--c-ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-ink);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:14px;margin-left:auto}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  width:220px;height:36px;padding:0 10px;
  background:#F2F6FC;border:1px solid transparent;border-radius:10px;
  color:var(--c-ink-3);
  transition:border-color 180ms var(--ease),background 180ms var(--ease);
}
.cmd-search:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(22,103,232,.14)}
.cmd-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--c-ink);
}
.cmd-search input::placeholder{color:var(--c-ink-3)}
.kbd{
  font-family:var(--f-num);font-size:12px;line-height:1;
  padding:4px 6px;border:1px solid var(--c-line);border-radius:6px;color:var(--c-ink-3);
  background:#fff;
}
.nav-sub{font-size:14.5px;font-weight:500;color:var(--c-ink-2)}
.nav-sub:hover{color:var(--c-ink)}
.menu-btn{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:10px;background:#fff;color:var(--c-ink);
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:12px;font-size:15px;font-weight:600;
  border:1px solid transparent;white-space:nowrap;
  transition:transform 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease),color 180ms var(--ease);
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-primary-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--c-ink);border-color:var(--c-line)}
.btn-ghost:hover{color:var(--c-primary);border-color:rgba(22,103,232,.3)}
.btn-text{color:var(--c-primary);font-weight:600;padding:0 4px;gap:6px}
.btn-text svg{transition:transform 180ms var(--ease)}
.btn-text:hover svg{transform:translateX(3px)}
.btn-block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-pill);
  background:var(--c-accent-050);color:#04776B;
  font-size:12.5px;font-weight:600;line-height:1.5;
}
.badge-blue{background:var(--c-primary-050);color:var(--c-primary)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 4px rgba(0,179,159,.16);flex:0 0 6px}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--c-bg);
  padding:56px 0 64px;
  border-bottom:1px solid var(--c-line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center right;
  opacity:.14;pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;top:-160px;right:-120px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(22,103,232,.14),transparent 68%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.crumbs{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-3);margin-bottom:20px}
.crumbs a{color:var(--c-ink-3)}
.crumbs a:hover{color:var(--c-primary)}
.crumbs span[aria-current]{color:var(--c-ink-2)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:48px;align-items:center}
.hero-lead{margin-top:20px;font-size:18px;line-height:1.85;color:var(--c-ink-2);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-note{display:flex;flex-wrap:wrap;gap:20px;margin-top:26px;padding-top:22px;border-top:1px solid var(--c-line)}
.hero-note li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-2)}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-xl);box-shadow:var(--sh-3)}
.hero-media .float-card{
  position:absolute;left:-28px;bottom:-24px;width:238px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);
  padding:18px 18px 16px;box-shadow:var(--sh-3);
}
.float-card .fc-title{font-size:14px;font-weight:600;color:var(--c-ink)}
.float-card .fc-text{margin-top:6px;font-size:13px;line-height:1.65;color:var(--c-ink-3)}
.float-card .fc-row{display:flex;align-items:center;gap:8px;margin-top:12px;font-size:13px;color:var(--c-ink-2)}

/* ---------- Anchor nav ---------- */
.anchor-bar{
  position:sticky;top:64px;z-index:80;
  background:rgba(245,248,252,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  padding:12px 0;
}
.anchor-bar .container{display:flex;gap:10px;overflow-x:auto;scrollbar-width:none}
.anchor-bar .container::-webkit-scrollbar{display:none}
.anchor-pill{
  flex:0 0 auto;padding:7px 14px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink-2);
  font-size:14px;font-weight:500;white-space:nowrap;
}
.anchor-pill:hover{color:var(--c-primary);border-color:rgba(22,103,232,.3)}
.anchor-pill.is-current{background:var(--c-primary-050);color:var(--c-primary);border-color:rgba(22,103,232,.24);font-weight:600}

/* ---------- Layout with side toc ---------- */
.doc-layout{
  display:grid;grid-template-columns:220px minmax(0,1fr);
  gap:56px;align-items:start;
  padding:72px 0 24px;
}
.toc{position:sticky;top:136px}
.toc-title{font-size:12.5px;font-weight:600;letter-spacing:.08em;color:var(--c-ink-3);margin-bottom:14px}
.toc ul{display:flex;flex-direction:column;gap:4px;border-left:2px solid var(--c-line)}
.toc a{
  display:block;padding:7px 0 7px 14px;margin-left:-2px;
  border-left:2px solid transparent;
  font-size:14px;color:var(--c-ink-3);line-height:1.5;
}
.toc a:hover{color:var(--c-ink)}
.toc a.is-current{color:var(--c-primary);border-left-color:var(--c-primary);font-weight:600}
.doc-main{max-width:760px;min-width:0}

.doc-block{padding-bottom:56px;margin-bottom:56px;border-bottom:1px solid var(--c-line)}
.doc-block:last-of-type{border-bottom:0;margin-bottom:0;padding-bottom:24px}
.doc-block h2{margin-bottom:18px;padding-left:16px;position:relative}
.doc-block h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;
  background:var(--c-primary);border-radius:2px;
}
.doc-block h3{margin:28px 0 10px}
.doc-block > p{font-size:17px;line-height:1.9}
.doc-block > p + p{margin-top:16px}
.point-list{display:flex;flex-direction:column;gap:14px;margin-top:24px}
.point-list li{position:relative;padding-left:26px;font-size:16px;line-height:1.85}
.point-list li::before{
  content:"";position:absolute;left:4px;top:.62em;width:8px;height:8px;
  background:var(--c-primary-050);border:2px solid var(--c-primary);border-radius:3px;
}
.quote-note{
  margin-top:26px;padding:18px 22px;
  background:var(--c-accent-050);border-left:4px solid var(--c-accent);
  border-radius:0 12px 12px 0;font-size:15.5px;color:var(--c-ink-2);
}
.inline-card{
  margin-top:28px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-l);box-shadow:var(--sh-1);padding:26px;
}
.inline-card h3{margin:0 0 10px}
.inline-card p{font-size:15.5px;line-height:1.8}
.mini-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:22px}
.mini-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-m);
  padding:16px 18px;transition:box-shadow 180ms var(--ease),transform 180ms var(--ease),border-color 180ms var(--ease);
}
.mini-item:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(22,103,232,.22)}
.mini-item .mi-k{font-family:var(--f-num);font-size:12.5px;color:var(--c-ink-3);letter-spacing:.06em}
.mini-item .mi-t{margin-top:6px;font-size:15.5px;font-weight:600;color:var(--c-ink)}
.mini-item .mi-d{margin-top:6px;font-size:13.5px;line-height:1.7;color:var(--c-ink-3)}

.doc-figure{margin-top:30px}
.doc-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-l)}
.doc-figure figcaption{margin-top:10px;font-size:13px;color:var(--c-ink-3);text-align:center}

.feature-row{
  display:flex;gap:18px;align-items:flex-start;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);
  padding:20px 22px;box-shadow:var(--sh-1);
  transition:box-shadow 180ms var(--ease),transform 180ms var(--ease),border-color 180ms var(--ease);
}
.feature-row + .feature-row{margin-top:14px}
.feature-row:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(22,103,232,.22)}
.feature-icon{
  flex:0 0 40px;width:40px;height:40px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(22,103,232,.08);color:var(--c-primary);
}
.feature-row h3{font-size:17px;margin:0 0 6px}
.feature-row p{font-size:14px;line-height:1.75;color:var(--c-ink-3)}

.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);gap:28px;align-items:center;margin-top:26px}
.split.reverse .split-media{order:2}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-l);box-shadow:var(--sh-1)}
.split-body h3{margin:0 0 10px}
.split-body p{font-size:15.5px;line-height:1.85}

.step-list{counter-reset:step;margin-top:26px;display:flex;flex-direction:column;gap:18px}
.step-list li{
  position:relative;padding-left:52px;font-size:16px;line-height:1.85;
}
.step-list li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:2px;width:34px;height:34px;border-radius:50%;
  background:var(--c-primary);color:#fff;font-family:var(--f-num);font-size:13px;font-weight:600;
  display:flex;align-items:center;justify-content:center;
}
.step-list li strong{display:block;color:var(--c-ink);font-size:16.5px;margin-bottom:4px}

/* ---------- FAQ ---------- */
.faq-wrap{margin-top:26px}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:14px;
  box-shadow:var(--sh-1);overflow:hidden;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease);
}
.faq-item + .faq-item{margin-top:10px}
.faq-item[open]{border-left:3px solid var(--c-accent);background:#FAFCFF;box-shadow:var(--sh-2)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 56px 18px 22px;font-size:16px;font-weight:600;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:22px;top:50%;width:14px;height:14px;
  transform:translateY(-50%);
  background:
    linear-gradient(var(--c-primary),var(--c-primary)) center/14px 2px no-repeat,
    linear-gradient(var(--c-primary),var(--c-primary)) center/2px 14px no-repeat;
  transition:transform 180ms var(--ease);
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(90deg)}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--c-ink-2)}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  background:var(--c-primary-050);
  border-radius:var(--r-xl);
  padding:56px;
  display:flex;align-items:center;gap:40px;justify-content:space-between;
  margin:56px 0 8px;
}
.cta-panel::after{
  content:"";position:absolute;right:-70px;bottom:-90px;width:240px;height:240px;
  border:2px solid rgba(0,179,159,.35);border-radius:50%;
}
.cta-copy{position:relative;z-index:1;max-width:620px}
.cta-copy h2{font-size:clamp(22px,2.4vw,30px)}
.cta-copy p{margin-top:12px;font-size:16px;line-height:1.8;color:var(--c-ink-2)}
.cta-actions{position:relative;z-index:1;display:flex;align-items:center;gap:16px;flex:0 0 auto}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:88px;
  background:#F2F6FC;
  border-top:1px solid var(--c-line);
  padding:64px 0 88px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:var(--c-ink-3);max-width:320px}
.footer-brand .contact{margin-top:14px;font-size:13.5px;color:var(--c-ink-3)}
.footer-col h4{font-size:15px;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--c-ink-2)}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;
  font-size:13px;color:var(--c-ink-3);
}
.footer-bottom a{color:var(--c-ink-3)}
.footer-bottom a:hover{color:var(--c-primary);text-decoration:underline}

/* ---------- Bottom bar ---------- */
.convert-bar{
  position:fixed;left:50%;bottom:22px;transform:translate(-50%,16px);
  z-index:90;width:min(560px,calc(100% - 40px));
  display:flex;align-items:center;gap:16px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);
  box-shadow:var(--sh-3);
  padding:10px 12px 10px 22px;
  opacity:0;pointer-events:none;
  transition:opacity 200ms var(--ease),transform 200ms var(--ease);
}
.convert-bar.is-visible{opacity:1;pointer-events:auto;transform:translate(-50%,0)}
.convert-bar .cb-text{font-size:14px;color:var(--c-ink);font-weight:500;flex:1;min-width:0}
.convert-bar .cb-close{
  width:32px;height:32px;flex:0 0 32px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--c-ink-3);border:1px solid transparent;
}
.convert-bar .cb-close:hover{background:var(--c-bg);color:var(--c-ink)}

/* ---------- Drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,27,51,.35);
  opacity:0;pointer-events:none;transition:opacity 220ms var(--ease);z-index:110;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:88vw;
  background:#fff;z-index:120;padding:20px;
  transform:translateX(100%);transition:transform 220ms var(--ease);
  overflow-y:auto;box-shadow:var(--sh-3);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--c-ink-2);
}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-link{
  padding:12px 14px;border-radius:var(--r-m);font-size:15px;color:var(--c-ink-2);
  border:1px solid transparent;
}
.drawer-link:hover{background:var(--c-bg);color:var(--c-ink)}
.drawer-link.is-active{background:var(--c-primary-050);color:var(--c-primary);font-weight:600}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:44px;padding:0 12px;
  background:#F2F6FC;border:1px solid var(--c-line);border-radius:var(--r-m);margin:20px 0 16px;
}
.drawer-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px}

/* ---------- Responsive ---------- */
@media (max-width:1200px){
  .doc-layout{grid-template-columns:200px minmax(0,1fr);gap:40px}
  .toc{top:128px}
}
@media (max-width:1024px){
  .nav-links{display:none}
  .cmd-search{display:none}
  .menu-btn{display:flex}
  .nav-sub{display:none}
  .section{padding:72px 0}
  .doc-layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:56px}
  .toc{position:static;margin-bottom:28px}
  .toc ul{border-left:0;flex-direction:row;flex-wrap:wrap;gap:8px}
  .toc a{padding:6px 12px;margin-left:0;border:1px solid var(--c-line);border-radius:var(--r-pill);background:#fff}
  .toc a.is-current{border-color:rgba(22,103,232,.24);background:var(--c-primary-050)}
  .doc-main{max-width:none}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:36px}
  .hero-media img{aspect-ratio:16/9}
  .hero-media .float-card{position:static;width:100%;margin-top:16px;left:auto;bottom:auto}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .page-hero{padding:36px 0 48px}
  h1{font-size:30px}
  .hero-actions .btn{flex:1 1 100%}
  .mini-grid{grid-template-columns:minmax(0,1fr)}
  .split{grid-template-columns:minmax(0,1fr);gap:18px}
  .split.reverse .split-media{order:0}
  .cta-panel{flex-direction:column;align-items:flex-start;padding:32px 24px;gap:24px}
  .cta-actions{width:100%;flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .site-footer{padding:48px 0 100px}
  .convert-bar{
    left:0;right:0;bottom:0;width:100%;transform:translateY(100%);
    border-radius:16px 16px 0 0;border-left:0;border-right:0;border-bottom:0;
    padding:12px 14px calc(12px + env(safe-area-inset-bottom));
  }
  .convert-bar.is-visible{transform:translateY(0)}
  .convert-bar .cb-text{font-size:13.5px}
}
@media (max-width:520px){
  .doc-block h2{font-size:22px}
  .doc-block > p{font-size:16px}
  .feature-row{padding:16px}
  .btn{height:42px;font-size:14.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --c-primary:#1667E8;
  --c-primary-600:#0F55C4;
  --c-primary-050:#EAF1FE;
  --c-accent:#00B39F;
  --c-accent-050:#E6F8F5;
  --c-ink:#0E1B33;
  --c-ink-2:#43536E;
  --c-ink-3:#7A88A0;
  --c-bg:#F5F8FC;
  --c-surface:#FFFFFF;
  --c-line:#E4EAF3;
  --c-success:#12A150;
  --c-warn:#E08C1F;
  --c-danger:#E0483C;
  --f-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-num:"Inter","SF Pro Display",system-ui,sans-serif;
  --r-s:8px;--r-m:12px;--r-l:18px;--r-xl:26px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(14,27,51,.04);
  --sh-2:0 8px 24px rgba(14,27,51,.06);
  --sh-3:0 18px 48px rgba(20,60,140,.10);
  --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;background:var(--c-bg);color:var(--c-ink);
  font-family:var(--f-sans);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color .18s var(--ease)}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--c-ink)}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(22,103,232,.35);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 顶部命令栏 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
}
.site-header::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--c-ink);
  white-space:nowrap;
}
.logo-mark{
  position:relative;width:28px;height:28px;border-radius:9px;
  background:var(--c-primary);display:inline-block;flex:0 0 auto;
}
.logo-mark span{
  position:absolute;right:-3px;bottom:-3px;width:15px;height:15px;
  background:var(--c-accent);border:2px solid #fff;border-radius:5px;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:12px}
.nav-link{
  position:relative;padding:10px 12px;font-size:14.5px;font-weight:500;
  color:var(--c-ink-2);border-radius:8px;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  border-radius:2px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease);
}
.nav-link:hover{color:var(--c-ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-ink);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.cmd-search{
  display:flex;align-items:center;gap:8px;width:230px;height:36px;padding:0 10px;
  background:#F2F6FC;border:1px solid transparent;border-radius:10px;color:var(--c-ink-3);
  transition:border-color .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease);
}
.cmd-search:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(22,103,232,.14)}
.cmd-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--c-ink)}
.cmd-search input::placeholder{color:var(--c-ink-3)}
.kbd{
  font-size:12px;line-height:1.4;padding:1px 6px;border:1px solid var(--c-line);
  background:#fff;border-radius:6px;color:var(--c-ink-3);font-family:var(--f-num);
}
.nav-sub{font-size:14px;font-weight:500;color:var(--c-ink-2)}
.nav-sub:hover{color:var(--c-primary)}
.menu-btn{
  display:none;align-items:center;justify-content:center;width:38px;height:38px;
  border:1px solid var(--c-line);border-radius:10px;background:#fff;color:var(--c-ink);
}
.menu-btn:hover{border-color:rgba(22,103,232,.3);color:var(--c-primary)}
.nav-mask{
  position:fixed;inset:0;background:rgba(14,27,51,.35);z-index:110;
  opacity:0;pointer-events:none;transition:opacity .22s var(--ease);
}
.nav-mask.is-on{opacity:1;pointer-events:auto}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-m);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-ink)}
.btn-ghost:hover{border-color:rgba(22,103,232,.3);color:var(--c-primary)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;padding:0;
  font-size:14.5px;font-weight:600;color:var(--c-primary);
}
.btn-text svg{transition:transform .18s var(--ease)}
.btn-text:hover svg{transform:translateX(3px)}

/* ============ 文章头部 ============ */
.article-hero{padding:40px 0 0}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--c-ink-3);margin-bottom:20px;
}
.breadcrumb a{color:var(--c-ink-3)}
.breadcrumb a:hover{color:var(--c-primary);text-decoration:underline}
.breadcrumb .sep{opacity:.65}
.breadcrumb .current{color:var(--c-ink-2)}
.article-head{max-width:900px}
.badge-cat{
  display:inline-flex;align-items:center;
  background:var(--c-accent-050);color:#0B8578;
  font-size:12.5px;font-weight:600;padding:4px 10px;border-radius:var(--r-pill);
}
.article-head h1{
  font-size:clamp(26px,3.4vw,36px);line-height:1.35;margin:14px 0 0;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:18px;font-size:13.5px;color:var(--c-ink-3);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--c-line);display:inline-block}
.article-meta time{font-family:var(--f-num);font-variant-numeric:tabular-nums}
.article-rule{margin-top:28px;border-top:1px solid var(--c-line)}

/* ============ 正文布局 ============ */
.article-section{padding:40px 0 0}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 240px;
  gap:64px;align-items:start;
}
.article-content{
  max-width:760px;
  font-size:17px;line-height:1.9;color:var(--c-ink-2);
  word-wrap:break-word;overflow-wrap:break-word;
}
.article-content h2{
  position:relative;font-size:clamp(21px,2.2vw,26px);line-height:1.4;
  color:var(--c-ink);margin:44px 0 16px;padding-left:14px;scroll-margin-top:96px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:4px;
  border-radius:2px;background:var(--c-primary);
}
.article-content h3{font-size:20px;line-height:1.45;color:var(--c-ink);margin:32px 0 12px;scroll-margin-top:96px}
.article-content h4{font-size:17px;color:var(--c-ink);margin:24px 0 10px}
.article-content strong{color:var(--c-ink);font-weight:700}
.article-content a{color:var(--c-primary);text-decoration:underline;text-decoration-color:rgba(22,103,232,.35);text-underline-offset:3px}
.article-content a:hover{text-decoration-color:var(--c-primary)}
.article-content ul{margin:0 0 1.2em}
.article-content ul li{position:relative;padding-left:20px;margin-bottom:10px}
.article-content ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;
  border-radius:2px;background:var(--c-primary);opacity:.8;
}
.article-content ol{margin:0 0 1.2em;counter-reset:item;list-style:none;padding:0}
.article-content ol li{position:relative;padding-left:32px;counter-increment:item;margin-bottom:10px}
.article-content ol li::before{
  content:counter(item);position:absolute;left:0;top:.28em;
  width:20px;height:20px;border-radius:6px;background:var(--c-primary-050);
  color:var(--c-primary);font-family:var(--f-num);font-variant-numeric:tabular-nums;
  font-size:12.5px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.article-content blockquote{
  margin:0 0 1.2em;padding:16px 20px;border-left:4px solid var(--c-accent);
  background:rgba(22,103,232,.045);border-radius:0 12px 12px 0;color:var(--c-ink-2);
}
.article-content img{border-radius:14px;margin:26px auto;max-width:100%}
.article-content figure{margin:26px 0}
.article-content figcaption{font-size:13px;text-align:center;color:var(--c-ink-3);margin-top:10px}
.article-content table{
  width:100%;border-collapse:collapse;font-size:15px;margin:0 0 1.4em;
  display:block;overflow-x:auto;border:1px solid var(--c-line);border-radius:12px;
}
.article-content th{
  background:rgba(22,103,232,.06);color:var(--c-ink);font-weight:700;
  text-align:left;padding:12px 16px;white-space:nowrap;
}
.article-content td{padding:12px 16px;border-top:1px solid var(--c-line);color:var(--c-ink-2)}
.article-content hr{border:0;border-top:1px solid var(--c-line);margin:36px 0}

/* 空态 */
.empty-state{
  max-width:760px;text-align:center;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-l);padding:56px 32px;box-shadow:var(--sh-1);
}
.empty-state svg{color:var(--c-line);margin:0 auto 16px}
.empty-state p{font-size:15px;color:var(--c-ink-3);margin-bottom:20px}

/* 侧栏锚点目录 */
.article-aside{position:sticky;top:96px}
.toc-title{
  font-size:12.5px;font-weight:700;letter-spacing:.1em;color:var(--c-ink-3);
  text-transform:uppercase;margin-bottom:10px;
}
.toc a{
  display:block;font-size:14px;line-height:1.5;color:var(--c-ink-3);
  padding:7px 12px;border-left:2px solid var(--c-line);
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.toc a:hover{color:var(--c-ink);background:#fff}
.toc a.is-current{color:var(--c-primary);border-left-color:var(--c-primary);font-weight:600;background:#fff}

/* ============ 文末标签与返回 ============ */
.article-foot{padding:40px 0 0;max-width:760px}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag-row .label{font-size:13px;color:var(--c-ink-3);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);font-size:13px;color:var(--c-ink-2);
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.tag:hover{border-color:rgba(22,103,232,.3);color:var(--c-primary)}
.article-foot .back-row{margin-top:26px}

/* ============ 通用板块头 ============ */
.section{padding:64px 0 0}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;
  border-bottom:1px solid var(--c-line);padding-bottom:16px;margin-bottom:28px;
}
.section-head h2{font-size:clamp(21px,2.4vw,28px)}
.section-head p{font-size:14px;color:var(--c-ink-3);margin:6px 0 0}

/* ============ 相关推荐 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  display:flex;flex-direction:column;gap:14px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(22,103,232,.22)}
.rel-card h3{font-size:17px;line-height:1.5}
.rel-card h3 a{color:var(--c-ink)}
.rel-card h3 a:hover{color:var(--c-primary)}
.rel-card p{font-size:14px;line-height:1.7;color:var(--c-ink-2);margin:0}
.rel-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--c-ink-3);
}
.rel-meta time{font-family:var(--f-num);font-variant-numeric:tabular-nums}
.rel-meta svg{color:var(--c-primary)}

/* ============ 登录前核对（图文块） ============ */
.check-block{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:center;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-xl);
  padding:32px;box-shadow:var(--sh-1);
}
.check-block img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:14px;border:1px solid var(--c-line)}
.check-block h3{font-size:22px;margin-bottom:12px}
.check-block p{font-size:15px;color:var(--c-ink-2)}
.check-list{margin-top:8px}
.check-list li{position:relative;padding-left:30px;font-size:15px;color:var(--c-ink-2);margin-bottom:12px}
.check-list li:last-child{margin-bottom:0}
.check-list li svg{position:absolute;left:0;top:5px;color:var(--c-accent)}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:14px;
  margin-bottom:10px;overflow:hidden;transition:border-color .18s var(--ease),background .18s var(--ease);
}
.faq-item.is-open{border-left:3px solid var(--c-accent);background:#FAFCFF}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;text-align:left;color:var(--c-ink);
}
.faq-q:hover{color:var(--c-primary)}
.faq-q .sign{
  flex:0 0 auto;width:22px;height:22px;border-radius:6px;background:var(--c-primary-050);
  color:var(--c-primary);display:flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;font-weight:600;transition:transform .18s var(--ease),background .18s var(--ease);
}
.faq-item.is-open .faq-q .sign{background:var(--c-accent-050);color:#0B8578;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--c-ink-2);margin:0}

/* ============ 底部 CTA ============ */
.cta-section{padding:72px 0 0}
.cta-band{
  position:relative;overflow:hidden;background:var(--c-primary-050);
  border-radius:var(--r-xl);padding:56px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:240px;height:240px;
  border:24px solid rgba(0,179,159,.16);border-radius:50%;
}
.cta-text{position:relative;z-index:1;max-width:620px}
.cta-text h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px}
.cta-text p{font-size:15px;color:var(--c-ink-2);margin:0}
.cta-actions{position:relative;z-index:1;display:flex;align-items:center;gap:20px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:88px;background:#F2F6FC;border-top:1px solid var(--c-line);
  padding:56px 0 88px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.75;color:var(--c-ink-2);max-width:340px}
.footer-brand .contact{font-size:13px;color:var(--c-ink-3);margin-top:14px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--c-ink);margin-bottom:14px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--c-ink-2)}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px;
  font-size:13px;color:var(--c-ink-3);
}
.footer-bottom a{color:var(--c-ink-3)}
.footer-bottom a:hover{color:var(--c-primary);text-decoration:underline}

/* ============ 底部固定转化条 ============ */
.sticky-cta{
  position:fixed;left:50%;bottom:24px;transform:translate(-50%,16px);
  z-index:90;display:flex;align-items:center;gap:16px;
  width:min(560px,calc(100% - 40px));height:60px;padding:0 16px 0 22px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);
  box-shadow:var(--sh-3);opacity:0;pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.sticky-cta.is-on{opacity:1;pointer-events:auto;transform:translate(-50%,0)}
.sticky-cta p{flex:1;margin:0;font-size:14px;color:var(--c-ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sticky-close{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;line-height:1;color:var(--c-ink-3);background:#F2F6FC;
}
.sticky-close:hover{color:var(--c-ink);background:var(--c-line)}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .article-aside{display:none}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .nav-links{
    position:fixed;top:0;right:0;z-index:120;
    width:320px;height:100vh;margin:0;padding:84px 20px 28px;
    background:#fff;box-shadow:var(--sh-3);
    flex-direction:column;align-items:stretch;gap:4px;
    transform:translateX(104%);
    transition:transform .22s var(--ease);
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{padding:14px 14px;font-size:15px}
  .nav-link::after{display:none}
  .nav-link.is-active{background:var(--c-primary-050);color:var(--c-primary);border-radius:10px}
  .menu-btn{display:inline-flex}
  .cmd-search{display:none}
  .nav-sub{display:none}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .article-hero{padding:28px 0 0}
  .article-section{padding:28px 0 0}
  .article-content{font-size:16.5px;line-height:1.9}
  .section{padding:52px 0 0}
  .related-grid{grid-template-columns:minmax(0,1fr);gap:16px}
  .check-block{grid-template-columns:minmax(0,1fr);gap:24px;padding:24px}
  .check-block img{aspect-ratio:16/10}
  .cta-section{padding:56px 0 0}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px;gap:24px}
  .cta-band::after{width:180px;height:180px;bottom:-100px;right:-70px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .site-footer{margin-top:64px;padding:44px 0 96px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .sticky-cta{
    left:0;right:0;bottom:0;width:100%;transform:translateY(16px);
    border-radius:0;border-left:0;border-right:0;border-bottom:0;
    padding:0 16px calc(0px + env(safe-area-inset-bottom));
    height:60px;
  }
  .sticky-cta.is-on{transform:translateY(0)}
}
@media (max-width:520px){
  .article-head h1{font-size:25px}
  .faq-q{padding:16px 18px;font-size:15.5px}
  .faq-a p{padding:0 18px 18px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .rel-card{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --c-primary:#1667E8;--c-primary-600:#0F55C4;--c-primary-050:#EAF1FE;
  --c-accent:#00B39F;--c-accent-050:#E6F8F5;
  --c-ink:#0E1B33;--c-ink-2:#43536E;--c-ink-3:#7A88A0;
  --c-bg:#F5F8FC;--c-surface:#FFFFFF;--c-line:#E4EAF3;
  --c-success:#12A150;--c-warn:#E08C1F;--c-danger:#E0483C;--c-disabled:#C9D3E2;
  --f-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-num:Inter,"SF Pro Display",system-ui,-apple-system,sans-serif;
  --r-s:8px;--r-m:12px;--r-l:18px;--r-xl:26px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(14,27,51,.04);
  --sh-2:0 8px 24px rgba(14,27,51,.06);
  --sh-3:0 18px 48px rgba(20,60,140,.10);
  --t:180ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--c-bg);color:var(--c-ink-2);
  font-family:var(--f-sans);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25}
h2{font-size:clamp(24px,3vw,34px);line-height:1.3}
h3{font-size:21px;line-height:1.45}
p{margin:0}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--c-primary-600)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(22,103,232,.18);border-radius:var(--r-s)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-m);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-ink)}
.btn-ghost:hover{border-color:rgba(22,103,232,.35);color:var(--c-primary)}
.btn-text{background:none;border:none;color:var(--c-primary);padding:0;height:auto;font-weight:600}
.btn-text .arrow{transition:transform var(--t)}
.btn-text:hover .arrow{transform:translateX(3px)}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* ===== header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.88);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);transition:box-shadow var(--t);
}
.site-header::before{
  content:"";display:block;height:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:24px;height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--c-ink)}
.logo:hover{color:var(--c-ink)}
.logo-mark{position:relative;width:28px;height:28px;border-radius:9px;background:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.logo-mark span{width:11px;height:11px;background:#fff;border-radius:3px;display:block}
.logo-mark::after{content:"";position:absolute;right:-3px;bottom:-3px;width:12px;height:12px;background:var(--c-accent);border:2px solid #fff;border-radius:4px}
.nav-links{display:flex;align-items:center;gap:4px;margin-right:auto}
.nav-link{
  position:relative;padding:6px 12px;font-size:15px;font-weight:500;color:var(--c-ink-2);border-radius:var(--r-s);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.nav-link:hover{color:var(--c-ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-ink);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:14px}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:236px;height:36px;padding:0 10px;border-radius:10px;background:#F2F6FC;color:var(--c-ink-3);
  border:1px solid transparent;transition:border-color var(--t),background var(--t);
}
.cmd-search:focus-within{border-color:var(--c-primary);background:#fff}
.cmd-search input{flex:1;border:none;background:none;outline:none;font-size:14px;color:var(--c-ink);min-width:0;font-family:inherit}
.cmd-search input::placeholder{color:var(--c-ink-3)}
.kbd{font-family:var(--f-num);font-size:12px;border:1px solid var(--c-line);border-radius:6px;padding:1px 5px;background:#fff;color:var(--c-ink-3)}
.nav-sub{font-size:14px;color:var(--c-ink-2);font-weight:500}
.nav-sub:hover{color:var(--c-primary)}
.menu-btn{display:none;width:40px;height:40px;align-items:center;justify-content:center;background:#fff;border:1px solid var(--c-line);border-radius:10px;color:var(--c-ink);cursor:pointer}
.nav-mask{position:fixed;inset:0;background:rgba(14,27,51,.35);opacity:0;visibility:hidden;transition:opacity 220ms ease,visibility 220ms ease;z-index:98}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ===== breadcrumb & hero ===== */
.cat-hero{padding:40px 0 8px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-3);margin-bottom:28px;flex-wrap:wrap}
.breadcrumb a{color:var(--c-ink-3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:var(--c-line)}
.breadcrumb .current{color:var(--c-ink-2)}
.hero-center{max-width:820px;margin:0 auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);
  background:var(--c-primary-050);color:var(--c-primary);font-size:14px;font-weight:600;margin-bottom:18px;
}
.lede{font-size:18px;line-height:1.85;color:var(--c-ink-2);margin-top:18px}
.hero-meta{display:flex;align-items:center;justify-content:center;gap:28px;margin-top:30px;flex-wrap:wrap;padding-top:24px;border-top:1px solid var(--c-line)}
.hero-meta .item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-3)}
.dot-ok{width:6px;height:6px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 4px rgba(0,179,159,.16);display:inline-block}

/* ===== section ===== */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head .kicker{font-family:var(--f-num);font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--c-accent);text-transform:uppercase;margin-bottom:10px}
.section-head p{margin-top:14px;font-size:16.5px;color:var(--c-ink-2)}

/* ===== compare rows ===== */
.compare{display:flex;flex-direction:column;gap:32px}
.compare-row{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:40px;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);padding:28px;transition:box-shadow var(--t),border-color var(--t),transform var(--t);
}
.compare-row:hover{box-shadow:var(--sh-2);border-color:rgba(22,103,232,.22);transform:translateY(-2px)}
.compare-row.reverse .compare-media{order:2}
.compare-media{position:relative;border-radius:var(--r-m);overflow:hidden;background:var(--c-bg)}
.compare-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.compare-media .tag{
  position:absolute;left:14px;top:14px;padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.92);color:var(--c-accent);font-size:12.5px;font-weight:600;
}
.compare-body .row-no{font-family:var(--f-num);font-size:13px;font-weight:600;color:var(--c-ink-3);letter-spacing:.06em}
.compare-body h3{margin:10px 0 12px}
.compare-body p{font-size:15.5px;line-height:1.85;color:var(--c-ink-2)}
.point-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.point-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--c-ink-2)}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--c-primary);opacity:.85;
}

/* ===== spec table ===== */
.table-wrap{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);overflow-x:auto;
}
table.spec{width:100%;min-width:760px;border-collapse:collapse;font-size:15px}
table.spec caption{caption-side:top;text-align:left;padding:24px 28px 8px;font-size:14px;color:var(--c-ink-3)}
table.spec th,table.spec td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--c-line);vertical-align:top}
table.spec thead th{background:rgba(22,103,232,.06);color:var(--c-ink);font-size:15px;font-weight:700;white-space:nowrap}
table.spec tbody th{font-weight:600;color:var(--c-ink);width:150px;background:#FBFCFE}
table.spec tbody tr:last-child th,table.spec tbody tr:last-child td{border-bottom:none}
table.spec tbody tr:hover td{background:#FAFCFF}
.table-note{padding:18px 28px 24px;font-size:13.5px;color:var(--c-ink-3);border-top:1px solid var(--c-line)}

/* ===== cards / scenarios ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);padding:26px;transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(22,103,232,.22)}
.card .badge{margin-bottom:16px}
.badge{
  display:inline-flex;align-items:center;padding:4px 10px;border-radius:var(--r-pill);
  background:var(--c-accent-050);color:var(--c-accent);font-size:12.5px;font-weight:600;
}
.card h3{font-size:17px;margin-bottom:10px}
.card p{font-size:14.5px;line-height:1.8;color:var(--c-ink-2)}
.icon-block{
  width:40px;height:40px;border-radius:10px;background:rgba(22,103,232,.08);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.scene-card:nth-child(2){transform:translateY(16px)}
.scene-card:nth-child(2):hover{transform:translateY(14px)}

/* ===== FAQ ===== */
.faq{max-width:820px;margin:0 auto}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-left:1px solid var(--c-line);
  border-radius:14px;margin-bottom:10px;overflow:hidden;transition:border-color var(--t),background var(--t);
}
.faq-item[open]{border-left:3px solid var(--c-accent);background:#FAFCFF}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 24px;font-size:16px;font-weight:600;color:var(--c-ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-family:var(--f-num);font-size:20px;line-height:1;color:var(--c-primary);
  transition:transform var(--t);flex:0 0 auto;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg)}
.faq-body{padding:0 24px 20px;font-size:15px;line-height:1.8;color:var(--c-ink-2)}

/* ===== CTA ===== */
.cta-band{
  position:relative;background:var(--c-primary-050);border-radius:var(--r-xl);
  padding:56px;display:flex;align-items:center;justify-content:space-between;gap:40px;overflow:hidden;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px)}
.cta-band p{margin-top:12px;font-size:16px;color:var(--c-ink-2);max-width:560px}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.cta-band::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:280px;height:280px;border-radius:50%;
  border:28px solid rgba(0,179,159,.14);
}

/* ===== footer ===== */
.site-footer{background:#F2F6FC;border-top:1px solid var(--c-line);padding:64px 0 88px;margin-top:32px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--c-ink-3);max-width:320px}
.footer-brand .contact{margin-top:14px;font-size:13.5px;color:var(--c-ink-3)}
.footer-col h4{font-size:15px;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--c-ink-2)}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-ink-3);
}
.footer-bottom a{color:var(--c-ink-3)}
.footer-bottom a:hover{color:var(--c-primary);text-decoration:underline}

/* ===== sticky cta ===== */
.sticky-cta{
  position:fixed;left:50%;bottom:22px;transform:translate(-50%,16px);z-index:90;
  display:flex;align-items:center;gap:18px;max-width:560px;width:calc(100% - 40px);
  padding:10px 12px 10px 22px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);
  box-shadow:var(--sh-3);opacity:0;visibility:hidden;transition:opacity 200ms ease,transform 200ms ease,visibility 200ms ease;
}
.sticky-cta.is-visible{opacity:1;visibility:visible;transform:translate(-50%,0)}
.sticky-cta p{font-size:14px;color:var(--c-ink);font-weight:500;flex:1;line-height:1.5}
.sticky-cta .close{width:30px;height:30px;border-radius:50%;border:1px solid var(--c-line);background:#fff;color:var(--c-ink-3);cursor:pointer;display:inline-flex;align-items:center;justify-content:center}
.sticky-cta .close:hover{color:var(--c-ink);border-color:var(--c-ink-3)}

@media (max-width:1200px){
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:320px;background:#fff;z-index:99;
    flex-direction:column;align-items:stretch;gap:6px;padding:88px 24px 32px;
    transform:translateX(100%);transition:transform 220ms cubic-bezier(.2,.7,.3,1);
    box-shadow:-16px 0 40px rgba(14,27,51,.10);margin-right:0;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{font-size:16px;padding:12px 8px}
  .nav-link::after{left:8px;right:8px;bottom:6px}
  .menu-btn{display:inline-flex}
  .cmd-search{display:none}
  .nav-sub{display:none}
  .compare-row{grid-template-columns:1fr;gap:24px}
  .compare-row.reverse .compare-media{order:0}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-card:nth-child(2){transform:none}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .cat-hero{padding:28px 0 0}
  .lede{font-size:16.5px}
  .hero-meta{gap:16px}
  .grid-3{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 24px;gap:26px}
  .cta-actions{width:100%;flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .sticky-cta{left:0;right:0;bottom:0;transform:translateY(100%);width:100%;max-width:none;border-radius:0;padding:10px 14px;padding-bottom:calc(10px + env(safe-area-inset-bottom))}
  .sticky-cta.is-visible{transform:translateY(0)}
}
@media (max-width:480px){
  h1{font-size:28px}
  .compare-row{padding:18px}
  .card{padding:20px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-body{padding:0 18px 18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
  .compare-row:hover,.card:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --c-primary:#1667E8;
  --c-primary-600:#0F55C4;
  --c-primary-050:#EAF1FE;
  --c-accent:#00B39F;
  --c-accent-050:#E6F8F5;
  --c-accent-light:#39D8C4;
  --c-ink:#0E1B33;
  --c-ink-2:#43536E;
  --c-ink-3:#7A88A0;
  --c-bg:#F5F8FC;
  --c-surface:#FFFFFF;
  --c-line:#E4EAF3;
  --c-success:#12A150;
  --c-warn:#E08C1F;
  --c-danger:#E0483C;
  --r-s:8px; --r-m:12px; --r-l:18px; --r-xl:26px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,27,51,.04);
  --sh-2:0 8px 24px rgba(14,27,51,.06);
  --sh-3:0 18px 48px rgba(20,60,140,.10);
  --f-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-num:"Inter","SF Pro Display",system-ui,-apple-system,sans-serif;
  --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:var(--f-sans);font-size:16px;line-height:1.8;
  color:var(--c-ink-2);background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--c-primary-600)}
button{font:inherit;color:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--c-ink);letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(22,103,232,.18)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .18s var(--ease);
}
.site-header::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--c-ink);
  flex:0 0 auto;
}
.logo:hover{color:var(--c-ink)}
.logo-mark{
  position:relative;display:inline-block;width:28px;height:28px;flex:0 0 auto;
  border-radius:9px;background:var(--c-primary);overflow:hidden;
}
.logo-mark span{
  position:absolute;right:0;bottom:0;width:14px;height:14px;
  background:var(--c-accent);border-top-left-radius:12px;
}
.nav-links{display:flex;align-items:center;gap:24px;margin-left:14px}
.nav-link{
  position:relative;font-size:14.5px;font-weight:500;color:var(--c-ink-2);
  padding:4px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .18s var(--ease);
}
.nav-link:hover{color:var(--c-ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-ink);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  width:240px;height:36px;padding:0 10px;
  background:#F2F6FC;border:1px solid transparent;border-radius:10px;
  color:var(--c-ink-3);transition:border-color .18s var(--ease),background .18s var(--ease);
}
.cmd-search:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(22,103,232,.14)}
.cmd-search input{
  flex:1;min-width:0;border:0;background:transparent;font-size:14px;color:var(--c-ink);
  outline:none;font-family:var(--f-sans);
}
.cmd-search input::placeholder{color:var(--c-ink-3)}
.kbd{
  font-size:12px;line-height:1;padding:3px 5px;border:1px solid var(--c-line);
  border-radius:6px;color:var(--c-ink-3);background:#fff;
}
.nav-sub{font-size:14px;font-weight:500;color:var(--c-ink-2)}
.nav-sub:hover{color:var(--c-primary)}
.menu-btn{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border:1px solid var(--c-line);border-radius:10px;
  background:#fff;color:var(--c-ink);
}
.menu-btn:hover{border-color:rgba(22,103,232,.3);color:var(--c-primary)}
.nav-mask{
  position:fixed;inset:0;background:rgba(14,27,51,.35);opacity:0;visibility:hidden;
  transition:opacity .22s var(--ease),visibility .22s var(--ease);z-index:110;
}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border:1px solid transparent;border-radius:12px;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-primary-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-ink)}
.btn-ghost:hover{border-color:rgba(22,103,232,.3);color:var(--c-primary);transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:48px;padding:0 26px;font-size:16px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:var(--c-primary);background:none;border:0;padding:0;
}
.btn-text svg{transition:transform .18s var(--ease)}
.btn-text:hover svg{transform:translateX(3px)}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:56px 0 64px;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);
}
.page-hero::before{
  content:"";position:absolute;top:-180px;right:-120px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(22,103,232,.10) 0%,rgba(22,103,232,0) 68%);
  pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;bottom:-220px;left:-160px;width:480px;height:480px;
  background:radial-gradient(circle,rgba(0,179,159,.08) 0%,rgba(0,179,159,0) 70%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:1}
.breadcrumb{font-size:14px;color:var(--c-ink-3);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.breadcrumb a{color:var(--c-ink-3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:#C9D3E2}
.breadcrumb .current{color:var(--c-ink-2)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:56px;align-items:center;margin-top:22px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;
  background:var(--c-primary-050);color:var(--c-primary);
  border-radius:var(--r-pill);font-size:13.5px;font-weight:600;
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,44px);line-height:1.25;margin:16px 0 18px;letter-spacing:-.02em;
}
.hero-lead{font-size:18px;line-height:1.85;color:var(--c-ink-2);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:28px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;padding-top:22px;border-top:1px solid var(--c-line)}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-2)}
.hero-points svg{flex:0 0 auto;color:var(--c-accent)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:22px;
  border:1px solid var(--c-line);box-shadow:var(--sh-3);
}
.hero-float{
  position:absolute;left:-18px;bottom:-20px;
  display:flex;align-items:center;gap:10px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-3);padding:14px 18px;max-width:250px;
}
.hero-float strong{display:block;font-size:14.5px;color:var(--c-ink);line-height:1.5}
.hero-float span{font-size:12.5px;color:var(--c-ink-3)}
.dot{
  position:relative;flex:0 0 auto;width:8px;height:8px;border-radius:50%;
  background:var(--c-accent);box-shadow:0 0 0 5px rgba(0,179,159,.16);
}

/* ---------- 步骤条 ---------- */
.steps{
  margin-top:56px;display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-xl);
  box-shadow:var(--sh-1);padding:30px 28px;
}
.step{position:relative;padding-right:28px}
.step:not(:last-child)::after{
  content:"";position:absolute;top:15px;left:44px;right:10px;height:2px;
  background:linear-gradient(90deg,var(--c-primary),rgba(0,179,159,.55));
}
.step-num{
  position:relative;z-index:1;display:flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:50%;background:var(--c-primary);color:#fff;
  font-family:var(--f-num);font-size:13.5px;font-weight:600;font-variant-numeric:tabular-nums;
}
.step:last-child .step-num{background:var(--c-accent)}
.step h3{font-size:16.5px;line-height:1.5;margin:14px 0 6px}
.step p{font-size:13.5px;line-height:1.7;color:var(--c-ink-3)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,3vw,32px);line-height:1.3;margin-bottom:14px}
.section-head p{font-size:16px;color:var(--c-ink-2)}
.tag{
  display:inline-block;padding:4px 10px;border-radius:var(--r-pill);
  background:var(--c-accent-050);color:#0A8D7D;font-size:12.5px;font-weight:600;
}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-left:34px}
.timeline::before{
  content:"";position:absolute;left:11px;top:10px;bottom:10px;width:2px;background:var(--c-line);
}
.tl-item{position:relative;margin-bottom:22px}
.tl-item:last-child{margin-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-29px;top:26px;width:12px;height:12px;border-radius:50%;
  background:#fff;border:3px solid var(--c-primary);
}
.tl-item:last-child::before{border-color:var(--c-accent)}
.tl-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);padding:26px 28px;
  transition:box-shadow .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease);
}
.tl-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(22,103,232,.22)}
.tl-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.tl-num{
  font-family:var(--f-num);font-size:13px;font-weight:600;color:var(--c-ink-3);
  font-variant-numeric:tabular-nums;letter-spacing:.04em;
}
.tl-card h3{font-size:19px;line-height:1.45}
.tl-card p{font-size:15.5px;margin-top:10px}
.tl-body{display:grid;grid-template-columns:minmax(0,1fr) 190px;gap:26px;align-items:center;margin-top:16px}
.tl-body img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:14px;border:1px solid var(--c-line)}
.tl-body .plain{margin-top:0}
.check-list{display:grid;gap:8px;margin-top:14px}
.check-list li{display:flex;gap:10px;font-size:14.5px;color:var(--c-ink-2);line-height:1.7}
.check-list li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;border-radius:2px;background:var(--c-primary);
}
.check-list.accent li::before{background:var(--c-accent)}

/* ---------- 深色对照区 ---------- */
.dark-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:linear-gradient(135deg,#0E1B33 0%,#143059 62%,#123A63 100%);
  padding:56px;color:rgba(255,255,255,.78);
}
.dark-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:380px;height:380px;
  border-radius:50%;background:radial-gradient(circle,rgba(0,179,159,.22) 0%,rgba(0,179,159,0) 70%);
}
.dark-band > *{position:relative;z-index:1}
.dark-band h2{color:#fff;font-size:clamp(24px,3vw,32px);line-height:1.3;margin-bottom:14px}
.dark-band .lead{font-size:16px;max-width:660px;color:rgba(255,255,255,.74)}
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin:38px 0 36px}
.metric{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-l);padding:22px 24px;
}
.metric .num{
  font-family:var(--f-num);font-size:32px;font-weight:700;color:var(--c-accent-light);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.metric .num small{font-size:14px;font-weight:600;margin-left:4px;color:rgba(255,255,255,.6)}
.metric p{font-size:13.5px;margin-top:8px;color:rgba(255,255,255,.66)}
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding-top:34px;border-top:1px solid rgba(255,255,255,.12)}
.quote{position:relative;padding-left:22px}
.quote::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;
  background:rgba(57,216,196,.6);
}
.quote p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.82)}
.quote span{display:block;margin-top:10px;font-size:12.5px;color:rgba(255,255,255,.5)}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid var(--c-accent);
  border-radius:var(--r-l);padding:24px 26px;box-shadow:var(--sh-1);
}
.notice .icon{
  flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;background:var(--c-accent-050);color:var(--c-accent);
}
.notice h3{font-size:17px;margin-bottom:6px}
.notice p{font-size:14.5px;color:var(--c-ink-2)}

/* ---------- CTA 卡 ---------- */
.cta-card{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  background:var(--c-primary-050);border-radius:var(--r-xl);padding:52px 56px;
}
.cta-card::after{
  content:"";position:absolute;right:-70px;bottom:-110px;width:280px;height:280px;
  border:2px solid rgba(0,179,159,.35);border-radius:50%;
}
.cta-card > *{position:relative;z-index:1}
.cta-card h2{font-size:clamp(22px,2.6vw,28px);line-height:1.35;margin-bottom:10px}
.cta-card p{font-size:15.5px;color:var(--c-ink-2);max-width:560px}
.cta-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto}

/* ---------- FAQ ---------- */
.faq-block{margin-top:72px}
.faq-list{max-width:820px;margin:32px auto 0}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:14px;
  margin-bottom:10px;overflow:hidden;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.faq-item.is-open{border-left:3px solid var(--c-accent);background:#FAFCFF}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;border:0;background:none;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;
}
.faq-icon{position:relative;flex:0 0 auto;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
}
.faq-icon::before{left:0;right:0;top:7px;height:2px}
.faq-icon::after{top:0;bottom:0;left:7px;width:2px;transition:transform .18s var(--ease),opacity .18s var(--ease)}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a-inner{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--c-ink-2)}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#F2F6FC;border-top:1px solid var(--c-line);
  padding:64px 0 88px;margin-top:24px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{font-size:16px}
.footer-brand p{font-size:14px;color:var(--c-ink-2);margin-top:14px;max-width:320px;line-height:1.8}
.footer-brand .contact{font-size:13px;color:var(--c-ink-3);margin-top:14px}
.footer-col h4{font-size:14.5px;color:var(--c-ink);margin-bottom:14px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--c-ink-2)}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:22px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-ink-3);
}
.footer-bottom a{color:var(--c-ink-3)}
.footer-bottom a:hover{color:var(--c-primary);text-decoration:underline}

/* ---------- 底部转化条 ---------- */
.sticky-cta{
  position:fixed;left:50%;bottom:22px;z-index:90;
  width:min(560px,calc(100% - 40px));height:60px;
  display:flex;align-items:center;gap:14px;padding:0 12px 0 22px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);box-shadow:var(--sh-3);
  transform:translateX(-50%) translateY(150%);opacity:0;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.sticky-cta.is-visible{transform:translateX(-50%) translateY(0);opacity:1}
.sticky-cta p{flex:1;font-size:14px;color:var(--c-ink);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sticky-close{
  flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  width:34px;height:34px;border:0;border-radius:50%;background:#F2F6FC;color:var(--c-ink-3);
}
.sticky-close:hover{background:var(--c-primary-050);color:var(--c-primary)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;width:320px;max-width:86vw;margin:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;padding:88px 24px 32px;box-shadow:var(--sh-3);z-index:120;
    transform:translateX(100%);transition:transform .22s var(--ease);
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{padding:12px 10px;font-size:16px;border-radius:10px}
  .nav-link::after{display:none}
  .nav-link:hover{background:var(--c-primary-050)}
  .nav-link.is-active{background:var(--c-primary-050);color:var(--c-primary)}
  .cmd-search{display:none}
  .nav-sub{display:none}
  .menu-btn{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media img{aspect-ratio:16/9}
  .hero-float{left:16px;bottom:-20px}
  .steps{grid-template-columns:repeat(2,1fr);gap:26px 0}
  .step:nth-child(2)::after{display:none}
  .metric .num{font-size:28px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:60px 0}
  .page-hero{padding:36px 0 52px}
  .hero-media img{aspect-ratio:16/10}
  .hero-float{position:static;margin-top:16px;max-width:none;left:auto;bottom:auto}
  .steps{grid-template-columns:1fr;padding:24px 22px;gap:0}
  .step{padding:0 0 22px}
  .step:last-child{padding-bottom:0}
  .step:not(:last-child)::after{display:none}
  .timeline{padding-left:26px}
  .timeline::before{left:7px}
  .tl-item::before{left:-25px;top:22px}
  .tl-card{padding:20px}
  .tl-body{grid-template-columns:1fr;gap:16px}
  .tl-body img{aspect-ratio:16/9}
  .dark-band{padding:32px 24px;border-radius:var(--r-l)}
  .metrics{grid-template-columns:1fr;gap:14px;margin:26px 0 26px}
  .quotes{grid-template-columns:1fr;gap:20px;padding-top:26px}
  .cta-card{flex-direction:column;align-items:stretch;padding:32px 24px;gap:24px}
  .cta-actions{flex-direction:column;align-items:stretch;gap:12px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1 / -1}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .sticky-cta{
    left:0;right:0;bottom:0;width:100%;height:60px;border-radius:0;
    border-left:0;border-right:0;border-bottom:0;
    transform:translateY(120%);padding:0 14px 0 18px;
    padding-bottom:env(safe-area-inset-bottom);
  }
  .sticky-cta.is-visible{transform:translateY(0)}
}
@media (max-width:520px){
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .sticky-cta p{font-size:13px}
  .sticky-cta .btn{padding:0 14px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}