/* roulang page: index */
:root{
  --brand:#FF5A36;
  --brand-2:#E5327A;
  --accent:#FFC53D;
  --ok:#12B76A;
  --warn:#F79009;
  --ink-900:#14162B;
  --ink-600:#4A4F6B;
  --ink-400:#8B90A8;
  --line:#ECE9E4;
  --bg:#F8F6F2;
  --surface:#FFFFFF;
  --grad-brand:linear-gradient(118deg,#FF5A36 0%,#E5327A 60%,#7C3AED 100%);
  --sh-1:0 2px 8px rgba(20,22,43,.05);
  --sh-2:0 16px 36px -20px rgba(20,22,43,.18);
  --sh-3:0 26px 60px -24px rgba(229,50,122,.30);
  --nav-h:132px;
  --bs-primary:#FF5A36;
  --bs-body-color:#4A4F6B;
  --bs-border-color:#ECE9E4;
  --bs-body-font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink-600);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16.5px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none;transition:color .2s ease,transform .2s ease}
a:hover{color:var(--brand)}
button{font-family:inherit}
input{font-family:inherit}
h1,h2,h3,h4{color:var(--ink-900);margin:0}
h1{font-size:clamp(30px,4.6vw,52px);font-weight:800;line-height:1.16;letter-spacing:-.02em}
h2{font-size:clamp(24px,3vw,36px);font-weight:800;line-height:1.24}
h3{font-size:21px;font-weight:700;line-height:1.35}
h4{font-size:17.5px;font-weight:600}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
.num{font-variant-numeric:tabular-nums}
.container-x{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
section[id]{scroll-margin-top:var(--nav-h)}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand-2);text-transform:uppercase;margin-bottom:12px}
.section-head p{max-width:620px;margin:12px 0 0}
.text-link{color:var(--brand);font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.text-link i{transition:transform .2s ease}
.text-link:hover i{transform:translateX(4px)}

/* 导航 */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-top{height:72px;display:flex;align-items:center;gap:20px;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink-900);font-size:19px;letter-spacing:-.01em;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:12px;background:var(--grad-brand);display:grid;place-items:center;color:#fff;font-size:14px;font-weight:800;letter-spacing:.02em}
.brand small{display:block;font-size:11px;font-weight:600;color:var(--ink-400);letter-spacing:.14em}
.nav-search{flex:1;max-width:360px;position:relative}
.nav-search input{width:100%;height:44px;border-radius:999px;border:1px solid var(--line);background:var(--surface);padding:0 44px 0 18px;font-size:14.5px;color:var(--ink-900);outline:none;transition:border-color .2s ease,box-shadow .2s ease}
.nav-search input::placeholder{color:var(--ink-400)}
.nav-search input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,90,54,.14)}
.nav-search i{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--ink-400);font-size:14px}
.nav-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.nav-user{font-size:13.5px;color:var(--ink-400);display:flex;align-items:center;gap:6px}
.nav-user .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(18,183,106,.15)}
.btn-burger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink-900);font-size:16px}
.nav-tabsrow{border-top:1px solid var(--line);height:56px;display:flex;align-items:center}
.tabs-scroll{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding:2px 0;width:100%}
.tabs-scroll::-webkit-scrollbar{display:none}
.tab-pill{padding:8px 18px;border-radius:999px;border:1px solid var(--line);font-size:14.5px;font-weight:600;color:var(--ink-600);white-space:nowrap;background:var(--surface)}
.tab-pill:hover{background:rgba(255,90,54,.06);color:var(--brand);border-color:rgba(255,90,54,.3)}
.tab-pill.active{background:var(--grad-brand);border-color:transparent;color:#fff}
.mobile-menu{display:none;border-top:1px solid var(--line);background:var(--surface);padding:16px 0 20px}
.mobile-menu a{display:block;padding:12px 4px;font-weight:600;color:var(--ink-900);border-bottom:1px dashed var(--line)}
.mobile-menu a:last-child{border-bottom:0}
.mobile-menu.show{display:block}

/* 按钮 */
.btn-x{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:50px;padding:0 28px;border-radius:999px;font-weight:700;font-size:15.5px;border:1px solid transparent;cursor:pointer;transition:transform .2s ease,filter .2s ease,box-shadow .2s ease,background-color .2s ease}
.btn-primary-x{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-2)}
.btn-primary-x:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px)}
.btn-outline-x{background:transparent;border:1.5px solid var(--brand);color:var(--brand)}
.btn-outline-x:hover{background:rgba(255,90,54,.08);color:var(--brand);transform:translateY(-1px)}
.btn-ghost-x{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.32);color:#fff}
.btn-ghost-x:hover{background:rgba(255,255,255,.22);color:#fff;transform:translateY(-1px)}
.btn-sm-x{height:42px;padding:0 20px;font-size:14.5px}
.btn-x:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(229,50,122,.35)}
.btn-x[disabled]{opacity:.45;pointer-events:none}

/* 徽章与标签 */
.badge-data{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 12px;border-radius:999px;border:1px solid rgba(255,197,61,.4);background:rgba(255,197,61,.12);font-size:12px;color:var(--ink-900);white-space:nowrap}
.badge-data b{color:#B57A00;font-weight:800;font-variant-numeric:tabular-nums}
.chip{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;font-size:12.5px;font-weight:700;background:rgba(229,50,122,.10);color:var(--brand-2)}
.chip-soft{background:rgba(20,22,43,.05);color:var(--ink-600)}
.tag-line{font-size:13px;color:var(--ink-400);font-weight:600;letter-spacing:.06em}

/* Hero */
.hero{padding:64px 0 72px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(560px 320px at 12% 0%,rgba(255,90,54,.10),transparent 70%),radial-gradient(520px 300px at 88% 12%,rgba(124,58,237,.10),transparent 72%);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero h1{margin-bottom:18px}
.hero h1 .accent{background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;max-width:560px;color:var(--ink-600)}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 26px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3.2;border-radius:28px;box-shadow:var(--sh-2)}
.hero-float{position:absolute;left:-28px;bottom:34px;background:var(--surface);border-radius:20px;padding:16px 18px;box-shadow:var(--sh-2);display:flex;align-items:center;gap:14px;max-width:290px}
.hero-float .icon-box{width:40px;height:40px;border-radius:14px;background:rgba(255,90,54,.12);color:var(--brand);display:grid;place-items:center;font-size:16px}
.hero-float strong{display:block;font-size:14.5px;color:var(--ink-900);line-height:1.4}
.hero-float span{font-size:12.5px;color:var(--ink-400)}

/* 信任条 */
.trust-bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.6)}
.trust-scroll{display:flex;gap:32px;overflow-x:auto;scrollbar-width:none;padding:20px 0;opacity:.85}
.trust-scroll::-webkit-scrollbar{display:none}
.trust-item{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:600;color:var(--ink-600);white-space:nowrap}
.trust-item i{color:var(--brand-2)}

/* 功能分区 */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.card-x{position:relative;background-color:var(--surface);border:1px solid var(--line);border-radius:24px;padding:28px;transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s ease,border-color .22s ease}
.card-x:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:transparent;background-image:linear-gradient(var(--surface),var(--surface)),var(--grad-brand);background-origin:border-box;background-clip:padding-box,border-box}
.card-icon{width:48px;height:48px;border-radius:16px;display:grid;place-items:center;font-size:19px;color:var(--brand);background:rgba(255,90,54,.10);margin-bottom:18px}
.card-icon.alt{color:var(--brand-2);background:rgba(229,50,122,.10)}
.card-icon.gold{color:#B57A00;background:rgba(255,197,61,.18)}
.card-x h3{margin-bottom:10px}
.card-x p{font-size:15.5px}
.feature-main{grid-column:span 7;display:flex;flex-direction:column}
.feature-main .card-media{margin-top:auto;border-radius:18px;overflow:hidden;margin-top:22px}
.feature-main .card-media img{width:100%;aspect-ratio:16/8;object-fit:cover}
.feature-side{grid-column:span 5;display:grid;gap:24px}
.feature-bar{grid-column:span 12;display:flex;align-items:center;justify-content:space-between;gap:28px;background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:26px 28px;flex-wrap:wrap}
.feature-bar .left{display:flex;align-items:center;gap:18px}

/* Z 字场景 */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;margin-bottom:72px}
.scene:last-child{margin-bottom:0}
.scene.reverse .scene-media{order:2}
.scene-media img{width:100%;aspect-ratio:16/10;border-radius:24px;box-shadow:var(--sh-2)}
.scene ul{list-style:none;padding:0;margin:20px 0 0}
.scene li{position:relative;padding-left:20px;margin-bottom:12px;font-size:16px}
.scene li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* 深色区块 */
.dark-section{background-color:var(--ink-900);background-image:radial-gradient(520px 300px at 8% 10%,rgba(255,90,54,.16),transparent 70%),radial-gradient(560px 320px at 92% 88%,rgba(124,58,237,.18),transparent 72%);color:rgba(255,255,255,.72);padding:104px 0}
.dark-section h2,.dark-section h3{color:#fff}
.dark-section .eyebrow{color:var(--accent)}
.dark-section p{color:rgba(255,255,255,.72)}
.rail-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:32px}
.rail-arrows{display:flex;gap:10px}
.rail-arrows button{width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.06);color:#fff;font-size:15px;transition:background-color .2s ease}
.rail-arrows button:hover{background:rgba(255,255,255,.16)}
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:14px;scrollbar-width:none}
.rail::-webkit-scrollbar{display:none}
.rail-card{flex:0 0 340px;scroll-snap-align:start;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:20px;padding:26px;transition:background-color .22s ease,transform .22s ease}
.rail-card:hover{background:rgba(255,255,255,.1);transform:translateY(-4px)}
.rail-card .who{font-size:13px;letter-spacing:.06em;font-weight:700;color:var(--accent)}
.rail-card strong{display:block;color:#fff;font-size:17px;margin:12px 0 14px;line-height:1.5}
.badge-dark{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 12px;border-radius:999px;background:rgba(255,197,61,.14);border:1px solid rgba(255,197,61,.34);color:var(--accent);font-size:12px;font-weight:700;font-variant-numeric:tabular-nums}

/* 方案区 */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.plan{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:32px 28px;display:flex;flex-direction:column;transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s ease}
.plan:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.plan-featured{border-top:4px solid transparent;border-image:var(--grad-brand) 1;border-image-slice:1 1 0 0;box-shadow:var(--sh-3);transform:translateY(-6px)}
.plan-featured:hover{transform:translateY(-10px)}
.plan-featured .flag{position:absolute;top:-14px;right:24px;background:var(--grad-brand);color:#fff;font-size:12.5px;font-weight:700;padding:5px 14px;border-radius:999px}
.plan h3{font-size:19px;margin-bottom:8px}
.plan .price{font-size:34px;font-weight:800;color:var(--ink-900);font-variant-numeric:tabular-nums;line-height:1.1;margin:14px 0 4px}
.plan .price small{font-size:14px;font-weight:600;color:var(--ink-400)}
.plan ul{list-style:none;padding:0;margin:20px 0 26px}
.plan li{display:flex;gap:10px;font-size:15px;margin-bottom:11px}
.plan li i{color:var(--ok);margin-top:5px;font-size:13px}
.plan .btn-x{margin-top:auto;width:100%}
.custom-bar{margin-top:24px;background:linear-gradient(118deg,rgba(255,90,54,.10),rgba(124,58,237,.10));border:1px solid var(--line);border-radius:24px;padding:26px 28px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* CMS 列表 */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:24px;overflow:hidden;display:flex;flex-direction:column;transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s ease,border-color .22s ease}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:transparent;background-image:linear-gradient(var(--surface),var(--surface)),var(--grad-brand);background-origin:border-box;background-clip:padding-box,border-box}
.post-thumb{overflow:hidden;border-radius:18px;margin:14px 14px 0}
.post-thumb img{width:100%;aspect-ratio:16/9;border-radius:18px;transition:transform .35s ease}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-body h3{font-size:17.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card:hover .post-body h3{color:var(--brand)}
.post-body .desc{font-size:14.5px;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums}
.post-card .cover-link{position:absolute;inset:0;z-index:2}
.empty-state{border:1px dashed var(--line);border-radius:24px;background:var(--surface);padding:56px 24px;text-align:center}
.empty-state i{font-size:34px;color:var(--ink-400)}
.empty-state p{margin:16px 0 20px;color:var(--ink-400)}

/* FAQ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:18px;margin-bottom:12px;overflow:hidden;transition:box-shadow .2s ease}
.faq-item.open{box-shadow:var(--sh-2)}
.faq-item.open::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad-brand)}
.faq-q{width:100%;background:none;border:0;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 24px;font-size:16.5px;font-weight:700;color:var(--ink-900);text-align:left;cursor:pointer}
.faq-q .sign{flex:0 0 26px;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;font-weight:700;color:var(--brand);transition:transform .2s ease}
.faq-item.open .faq-q .sign{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s cubic-bezier(.2,.7,.3,1)}
.faq-a div{padding:0 24px 22px;font-size:15.5px}

/* CTA */
.cta-band{background-color:var(--ink-900);background-image:radial-gradient(460px 260px at 12% 20%,rgba(255,90,54,.18),transparent 70%),radial-gradient(500px 300px at 86% 80%,rgba(229,50,122,.16),transparent 72%);border-radius:28px;padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;max-width:620px}
.cta-band p{color:rgba(255,255,255,.72);margin:14px 0 0}

/* 页脚 */
.site-footer{background:var(--surface);border-top:2px solid transparent;border-image:var(--grad-brand) 1;margin-top:88px;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-grid h4{font-size:15px;margin-bottom:18px;color:var(--ink-900)}
.footer-grid ul{list-style:none;padding:0;margin:0}
.footer-grid li{margin-bottom:11px}
.footer-grid a{font-size:14.5px;color:var(--ink-600);display:inline-block}
.footer-grid a:hover{color:var(--brand);transform:translateX(2px)}
.footer-brand p{font-size:14.5px;max-width:320px;margin-top:14px}
.footer-sub{margin-top:20px;display:flex;gap:8px;max-width:340px}
.footer-sub input{flex:1;height:48px;border-radius:999px;border:1px solid var(--line);padding:0 18px;font-size:14.5px;outline:none;transition:border-color .2s ease,box-shadow .2s ease}
.footer-sub input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,90,54,.14)}
.footer-sub button{height:48px;padding:0 22px;border-radius:999px;border:0;background:var(--grad-brand);color:#fff;font-weight:700;font-size:14.5px}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--ink-400)}
.footer-bottom a{color:var(--ink-400);margin-left:16px}
.footer-bottom a:hover{color:var(--brand)}

@media (max-width:1200px){
  .rail-card{flex-basis:300px}
}
@media (max-width:992px){
  :root{--nav-h:116px}
  .nav-search{display:none}
  .btn-burger{display:grid;place-items:center}
  .nav-top{height:60px}
  .nav-tabsrow{height:48px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media img{aspect-ratio:16/10}
  .hero-float{position:static;margin-top:16px;max-width:none;left:auto;bottom:auto}
  .feature-main,.feature-side{grid-column:span 12}
  .plan-grid{grid-template-columns:1fr;gap:20px}
  .plan-featured{transform:none}
  .plan-featured:hover{transform:translateY(-4px)}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:64px 0}
  .dark-section{padding:76px 0}
  .scene{gap:32px}
}
@media (max-width:768px){
  body{font-size:16px}
  .container-x{padding:0 16px}
  .section{padding:52px 0}
  .dark-section{padding:60px 0}
  .scene{grid-template-columns:1fr;gap:24px;margin-bottom:52px}
  .scene.reverse .scene-media{order:0}
  .feature-bar{flex-direction:column;align-items:flex-start}
  .cta-band{padding:36px 24px;border-radius:24px}
  .hero{padding:40px 0 52px}
  .rail-card{flex-basis:82%}
  .rail-arrows{display:none}
  .faq-q{font-size:15.5px;padding:18px 18px}
  .faq-a div{padding:0 18px 18px}
  .nav-user{display:none}
}
@media (max-width:576px){
  :root{--nav-h:100px}
  .nav-top{height:56px}
  .nav-tabsrow{height:44px}
  .post-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero-cta .btn-x{width:100%}
  .brand{font-size:17px}
}

/* roulang page: article */
:root{
  --grad-brand:linear-gradient(118deg,#FF5A36 0%,#E5327A 60%,#7C3AED 100%);
  --brand:#FF5A36;
  --brand-2:#E5327A;
  --accent:#FFC53D;
  --ok:#12B76A;
  --warn:#F79009;
  --ink-900:#14162B;
  --ink-600:#4A4F6B;
  --ink-400:#8B90A8;
  --line:#ECE9E4;
  --bg:#F8F6F2;
  --surface:#FFFFFF;
  --sh-1:0 2px 8px rgba(20,22,43,.05);
  --sh-2:0 16px 36px -20px rgba(20,22,43,.18);
  --sh-3:0 26px 60px -24px rgba(229,50,122,.30);
  --r-sm:10px; --r-md:14px; --r-card:24px; --r-hero:28px;
  --nav-h:128px;
  --bs-primary:#FF5A36;
  --bs-body-color:#4A4F6B;
  --bs-border-color:#ECE9E4;
}
@media (max-width:992px){ :root{ --nav-h:100px; } }
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--ink-600);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button,input{font-family:inherit;}
h1,h2,h3,h4{color:var(--ink-900);margin:0;}
p{margin:0 0 1.1em;}
.container-x{max-width:1200px;margin:0 auto;padding:0 24px;}
@media (max-width:768px){ .container-x{padding:0 16px;} }
:focus-visible{outline:3px solid rgba(229,50,122,.35);outline-offset:2px;border-radius:6px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:var(--sh-1);}
.nav-top{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink-900);font-weight:800;font-size:17px;letter-spacing:-.01em;white-space:nowrap;}
.brand span{display:flex;flex-direction:column;line-height:1.15;}
.brand small{font-size:11.5px;font-weight:500;color:var(--ink-400);letter-spacing:.02em;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;background:var(--grad-brand);
  color:#fff;display:grid;place-items:center;font-size:14px;font-weight:800;letter-spacing:.04em;
  box-shadow:0 8px 20px -10px rgba(229,50,122,.7);
}
.nav-search{position:relative;flex:1;max-width:360px;margin-left:8px;}
.nav-search input{
  width:100%;height:44px;border-radius:999px;border:1px solid var(--line);
  background:#fff;padding:0 44px 0 18px;font-size:14.5px;color:var(--ink-900);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,90,54,.14);}
.nav-search i{position:absolute;right:18px;top:50%;transform:translateY(-50%);color:var(--ink-400);font-size:14px;}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto;}
.nav-user{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-400);white-space:nowrap;}
.nav-user .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(18,183,106,.16);}
.btn-burger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink-900);font-size:16px;}

/* nav tabs row */
.nav-tabsrow{height:56px;display:flex;align-items:center;border-top:1px solid rgba(236,233,228,.7);}
.tabs-scroll{display:flex;gap:8px;overflow-x:auto;padding:8px 0;scrollbar-width:none;width:100%;}
.tabs-scroll::-webkit-scrollbar{display:none;}
.tab-pill{
  flex:0 0 auto;display:inline-flex;align-items:center;
  padding:8px 18px;border-radius:999px;border:1px solid var(--line);
  font-size:14px;color:var(--ink-600);background:#fff;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.tab-pill:hover{background:rgba(255,90,54,.06);border-color:rgba(255,90,54,.28);color:var(--ink-900);}
.tab-pill.active{background:var(--grad-brand);color:#fff;border-color:transparent;box-shadow:0 10px 22px -14px rgba(229,50,122,.9);}
.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff;}
.mobile-menu.open{display:block;}
.mobile-menu .container-x{display:flex;flex-direction:column;padding-top:10px;padding-bottom:16px;}
.mobile-menu a{padding:12px 4px;font-size:15px;color:var(--ink-600);border-bottom:1px solid rgba(236,233,228,.7);}
.mobile-menu a:last-child{border-bottom:none;}

/* ---------- Buttons ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease,background-color .2s ease,color .2s ease;
}
.btn-primary-x{background:var(--grad-brand);color:#fff;box-shadow:0 12px 26px -16px rgba(229,50,122,.85);}
.btn-primary-x:hover{filter:brightness(1.06);transform:translateY(-1px);color:#fff;}
.btn-outline-x{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-outline-x:hover{background:rgba(255,90,54,.08);color:var(--brand);}
.btn-ghost-x{background:var(--ink-900);color:#fff;}
.btn-ghost-x:hover{background:#20233d;transform:translateY(-1px);color:#fff;}
.btn-sm-x{height:40px;padding:0 20px;font-size:14px;}

/* ---------- Article shell ---------- */
main{padding-top:32px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);margin-bottom:26px;}
.crumbs a{color:var(--ink-400);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:#c9c5bd;}
.crumbs .cur{color:var(--ink-600);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

.art-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start;}
.art-main{min-width:0;max-width:780px;}
@media (max-width:1200px){
  .art-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .art-side{display:none;}
  .art-main{max-width:820px;margin:0 auto;}
}

.art-head{margin-bottom:26px;}
.art-cat{
  display:inline-flex;align-items:center;gap:7px;height:28px;padding:0 14px;border-radius:999px;
  font-size:12.5px;font-weight:600;color:var(--brand-2);
  background:rgba(229,50,122,.09);border:1px solid rgba(229,50,122,.22);
}
.art-title{
  font-size:clamp(28px,3.9vw,44px);font-weight:800;line-height:1.2;letter-spacing:-.02em;
  margin:16px 0 18px;color:var(--ink-900);
}
.art-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:13px;color:var(--ink-400);}
.art-meta i{margin-right:5px;opacity:.75;}
.art-meta .div{color:#d5d1c9;}

.art-hero{margin:0 0 36px;border-radius:var(--r-card);overflow:hidden;background:#efece6;position:relative;aspect-ratio:21/9;}
.art-hero img{width:100%;height:100%;object-fit:cover;}
@media (max-width:768px){ .art-hero{aspect-ratio:16/9;border-radius:18px;} }

/* ---------- Article content ---------- */
.art-content{font-size:17px;line-height:1.9;color:var(--ink-600);}
.art-content > *:first-child{margin-top:0;}
.art-content p{margin:0 0 1.15em;}
.art-content h2{
  font-size:clamp(22px,2.4vw,29px);font-weight:800;line-height:1.28;color:var(--ink-900);
  margin:2.4em 0 .9em;padding-left:16px;position:relative;
}
.art-content h2::before{
  content:"";position:absolute;left:0;top:.24em;width:4px;height:20px;border-radius:3px;background:var(--grad-brand);
}
.art-content h3{font-size:20px;font-weight:700;color:var(--ink-900);margin:1.9em 0 .7em;}
.art-content h4{font-size:17.5px;font-weight:600;color:var(--ink-900);margin:1.6em 0 .6em;}
.art-content a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1.5px;}
.art-content a:hover{color:var(--brand-2);}
.art-content blockquote{
  margin:1.6em 0;padding:18px 22px;border-left:4px solid var(--brand);
  background:#FBF7F2;border-radius:0 14px 14px 0;color:var(--ink-600);
}
.art-content ul,.art-content ol{margin:0 0 1.3em;padding-left:1.4em;}
.art-content li{margin:.45em 0;}
.art-content ul li::marker{color:var(--brand);}
.art-content ol li::marker{color:var(--brand);font-weight:700;}
.art-content img{border-radius:18px;width:100%;margin:1.4em 0;}
.art-content figure{margin:1.6em 0;}
.art-content figcaption{font-size:13px;color:var(--ink-400);text-align:center;margin-top:8px;}
.art-content .table-wrap{overflow-x:auto;margin:1.6em 0;border-radius:14px;border:1px solid var(--line);}
.art-content table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px;}
.art-content thead th{background:var(--ink-900);color:#fff;font-weight:600;text-align:left;padding:12px 16px;}
.art-content tbody td{padding:12px 16px;border-top:1px solid var(--line);}
.art-content tbody tr:nth-child(even){background:rgba(20,22,43,.02);}
.art-content code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;
  background:#F2EFE9;border-radius:8px;padding:2px 7px;color:var(--ink-900);
}
.art-content hr{border:none;border-top:1px solid var(--line);margin:2.2em 0;}

/* empty state */
.art-empty{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:56px 28px;text-align:center;box-shadow:var(--sh-1);
}
.art-empty i{font-size:34px;color:var(--ink-400);margin-bottom:16px;display:block;}
.art-empty h2{font-size:22px;margin-bottom:10px;}
.art-empty p{margin-bottom:22px;color:var(--ink-400);}

/* ---------- Pager ---------- */
.art-pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:56px 0 0;}
.pager-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:20px;
  padding:22px 24px;transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s ease,border-color .22s ease;
}
.pager-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(255,90,54,.35);}
.pager-card span{display:block;font-size:12.5px;color:var(--ink-400);margin-bottom:8px;}
.pager-card strong{display:block;font-size:15.5px;font-weight:700;color:var(--ink-900);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.pager-card:hover strong{color:var(--brand);}
.pager-card.next{text-align:right;}
@media (max-width:768px){ .art-pager{grid-template-columns:1fr;} .pager-card.next{text-align:left;} }

/* ---------- Related list ---------- */
.art-block{margin-top:56px;}
.art-block-h{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.art-block-h h2{font-size:22px;font-weight:800;}
.art-block-h a{font-size:14px;color:var(--brand);}
.art-block-h a:hover{color:var(--brand-2);}
.rel-list{display:flex;flex-direction:column;gap:12px;}
.rel-item{
  display:flex;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--line);
  border-radius:16px;padding:16px 20px;position:relative;overflow:hidden;
  transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s ease,border-color .22s ease;
}
.rel-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--grad-brand);opacity:.85;}
.rel-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(229,50,122,.28);}
.rel-item strong{font-size:15.5px;font-weight:700;color:var(--ink-900);flex:1;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;padding-left:6px;}
.rel-item:hover strong{color:var(--brand);}
.rel-item time{font-size:13px;color:var(--ink-400);white-space:nowrap;}
.back-row{margin-top:32px;}

/* ---------- Sidebar ---------- */
.art-side{position:sticky;top:calc(var(--nav-h) + 20px);display:flex;flex-direction:column;gap:20px;}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--sh-1);}
.side-card h3{font-size:14px;font-weight:700;color:var(--ink-900);letter-spacing:.02em;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:3px;background:var(--grad-brand);}
.side-toc{display:flex;flex-direction:column;gap:2px;max-height:320px;overflow:auto;}
.side-toc a{font-size:14px;color:var(--ink-600);padding:8px 10px;border-radius:10px;line-height:1.5;transition:background .2s ease,color .2s ease;}
.side-toc a:hover,.side-toc a.on{background:rgba(255,90,54,.08);color:var(--brand);}
.side-rel{display:flex;flex-direction:column;gap:14px;}
.side-rel a{display:block;font-size:14.5px;font-weight:600;color:var(--ink-900);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.side-rel a:hover{color:var(--brand);}
.side-rel time{display:block;font-size:12.5px;color:var(--ink-400);margin-top:5px;font-weight:400;}
.side-tip{background:linear-gradient(180deg,#FFF7F2 0%,#FFFFFF 100%);padding:20px;border-radius:18px;border:1px solid var(--line);}
.side-tip p{font-size:14px;margin-bottom:14px;color:var(--ink-600);}

/* ---------- Bottom CTA ---------- */
.art-cta{
  margin-top:88px;background:var(--ink-900);color:#fff;position:relative;overflow:hidden;
  padding:66px 0;
}
.art-cta::before,.art-cta::after{content:"";position:absolute;border-radius:50%;pointer-events:none;}
.art-cta::before{width:520px;height:520px;left:-160px;top:-220px;background:radial-gradient(circle,rgba(255,90,54,.18),transparent 68%);}
.art-cta::after{width:480px;height:480px;right:-140px;bottom:-240px;background:radial-gradient(circle,rgba(124,58,237,.18),transparent 68%);}
.art-cta .container-x{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.art-cta h2{color:#fff;font-size:clamp(22px,2.6vw,32px);font-weight:800;line-height:1.3;max-width:620px;}
.art-cta p{color:rgba(255,255,255,.72);margin:12px 0 0;font-size:15px;max-width:620px;}

/* ---------- Footer ---------- */
.site-footer{background:#fff;border-top:2px solid transparent;border-image:var(--grad-brand) 1;padding-top:64px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:44px;padding-bottom:52px;}
.footer-brand p{font-size:14.5px;color:var(--ink-600);margin:18px 0 22px;max-width:340px;line-height:1.8;}
.footer-sub{display:flex;gap:8px;}
.footer-sub input{
  flex:1;height:48px;border-radius:999px;border:1px solid var(--line);padding:0 18px;font-size:14px;
  background:var(--bg);transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-sub input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,90,54,.14);background:#fff;}
.footer-sub button{
  height:48px;padding:0 22px;border-radius:999px;border:none;background:var(--grad-brand);
  color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:filter .2s ease,transform .2s ease;
}
.footer-sub button:hover{filter:brightness(1.06);transform:translateY(-1px);}
.site-footer h4{font-size:14px;font-weight:700;color:var(--ink-900);margin-bottom:16px;letter-spacing:.02em;}
.site-footer ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:11px;}
.site-footer ul a{font-size:14.5px;color:var(--ink-600);display:inline-block;transition:color .2s ease,transform .2s ease;}
.site-footer ul a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13px;color:var(--ink-400);
}
.footer-bottom a{color:var(--ink-400);margin-left:18px;}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- Responsive ---------- */
@media (max-width:992px){
  .nav-top{height:56px;gap:14px;}
  .nav-tabsrow{height:44px;}
  .nav-search{display:none;}
  .btn-burger{display:grid;place-items:center;}
  .nav-user{display:none;}
  .tab-pill{padding:7px 15px;font-size:13.5px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  main{padding-top:22px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .brand{font-size:15.5px;}
  .brand-mark{width:36px;height:36px;border-radius:11px;font-size:13px;}
  .brand small{display:none;}
  .art-title{font-size:26px;}
  .art-content{font-size:16.5px;}
  .art-cta{padding:52px 0;margin-top:64px;}
  .art-cta .container-x{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px;}
  .site-footer{padding-top:48px;}
  .footer-bottom a{margin-left:0;margin-right:16px;}
}
@media (max-width:520px){
  .btn-x{height:44px;padding:0 20px;font-size:14.5px;}
  .btn-sm-x{height:38px;padding:0 16px;font-size:13.5px;}
  .art-meta{gap:7px;font-size:12.5px;}
}

/* roulang page: category1 */
:root{
  --brand:#FF5A36;
  --brand-2:#E5327A;
  --accent:#FFC53D;
  --ok:#12B76A;
  --warn:#F79009;
  --ink-900:#14162B;
  --ink-600:#4A4F6B;
  --ink-400:#8B90A8;
  --line:#ECE9E4;
  --bg:#F8F6F2;
  --surface:#FFFFFF;
  --grad-brand:linear-gradient(118deg,#FF5A36 0%,#E5327A 60%,#7C3AED 100%);
  --sh-1:0 2px 8px rgba(20,22,43,.05);
  --sh-2:0 16px 36px -20px rgba(20,22,43,.18);
  --sh-3:0 26px 60px -24px rgba(229,50,122,.30);
  --r-s:10px;
  --r-m:14px;
  --r-c:24px;
  --r-lg:28px;
  --nav-h:128px;
  --bs-primary:#FF5A36;
  --bs-body-color:#4A4F6B;
  --bs-body-bg:#F8F6F2;
  --bs-border-color:#ECE9E4;
  --bs-link-color:#E5327A;
  --bs-link-hover-color:#FF5A36;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:800;letter-spacing:-.01em;}
p{margin:0;}
p+p{margin-top:1.1em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(229,50,122,.35);outline-offset:2px;border-radius:8px;}

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

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:var(--sh-1);}
.nav-top{
  display:flex;align-items:center;gap:24px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:42px;height:42px;border-radius:13px;
  background:var(--grad-brand);color:#fff;
  display:grid;place-items:center;
  font-size:15px;font-weight:800;letter-spacing:.4px;
  box-shadow:0 10px 22px -14px rgba(229,50,122,.9);
}
.brand>span:last-child{
  display:block;font-size:17px;font-weight:800;color:var(--ink-900);
  line-height:1.25;letter-spacing:-.01em;
}
.brand small{display:block;font-size:12px;font-weight:500;color:var(--ink-400);letter-spacing:.02em;}
.nav-search{position:relative;flex:1;max-width:340px;margin-left:12px;}
.nav-search input{
  width:100%;height:44px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
  padding:0 46px 0 18px;font-size:14px;
  transition:border-color .2s,box-shadow .2s;
}
.nav-search input::placeholder{color:var(--ink-400);}
.nav-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,90,54,.14);}
.nav-search i{position:absolute;right:17px;top:50%;transform:translateY(-50%);color:var(--ink-400);font-size:14px;}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto;}
.nav-user{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);white-space:nowrap;}
.nav-user .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(18,183,106,.16);}
.btn-burger{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink-900);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-tabsrow{height:56px;display:flex;align-items:center;}
.tabs-scroll{
  display:flex;gap:8px;align-items:center;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  padding:6px 0;width:100%;
}
.tabs-scroll::-webkit-scrollbar{display:none;}
.tab-pill{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border-radius:999px;border:1px solid var(--line);background:#fff;
  color:var(--ink-600);font-size:14px;font-weight:600;white-space:nowrap;
  transition:background .2s,color .2s,border-color .2s,box-shadow .2s;
}
.tab-pill:hover{background:rgba(255,90,54,.06);color:var(--brand);border-color:rgba(255,90,54,.32);}
.tab-pill.active{
  background:var(--grad-brand);color:#fff;border-color:transparent;
  box-shadow:0 12px 24px -16px rgba(229,50,122,.95);
}
.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff;padding:8px 0 14px;}
.mobile-menu.open{display:block;}
.mobile-menu a{display:block;padding:13px 0;border-bottom:1px solid var(--line);font-weight:600;color:var(--ink-900);font-size:15px;}
.mobile-menu a:last-child{border-bottom:0;}

/* ---------- buttons ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;cursor:pointer;border-radius:999px;font-weight:700;
  white-space:nowrap;text-decoration:none;
  transition:transform 220ms cubic-bezier(.2,.7,.3,1),filter 220ms,background .2s,color .2s,border-color .2s,box-shadow .22s;
}
.btn-primary-x{
  background:var(--grad-brand);color:#fff;
  height:50px;padding:0 26px;font-size:15.5px;
  box-shadow:0 18px 34px -22px rgba(229,50,122,.95);
}
.btn-primary-x:hover{filter:brightness(1.06);transform:translateY(-1px);color:#fff;}
.btn-sm-x{height:40px;padding:0 18px;font-size:14px;box-shadow:none;}
.btn-line-x{
  background:transparent;border:1.5px solid var(--brand);color:var(--brand);
  height:50px;padding:0 24px;font-size:15.5px;
}
.btn-line-x:hover{background:rgba(255,90,54,.08);transform:translateY(-1px);}
.btn-line-sm-x{background:transparent;border:1.5px solid var(--brand);color:var(--brand);height:40px;padding:0 18px;font-size:14px;}
.btn-line-sm-x:hover{background:rgba(255,90,54,.08);}
.btn-dark-x{background:rgba(255,255,255,.14);color:#fff;border:1.5px solid rgba(255,255,255,.34);height:50px;padding:0 24px;font-size:15.5px;}
.btn-dark-x:hover{background:rgba(255,255,255,.22);transform:translateY(-1px);color:#fff;}
.btn-x[disabled]{opacity:.45;pointer-events:none;}

/* ---------- generic ---------- */
.section{padding:88px 0;scroll-margin-top:var(--nav-h);}
.section-tight{padding:64px 0;scroll-margin-top:var(--nav-h);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,3vw,36px);line-height:1.24;}
.section-head p{margin-top:14px;font-size:16.5px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--brand-2);
  letter-spacing:.06em;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad-brand);}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 13px;border-radius:999px;
  background:rgba(229,50,122,.09);color:var(--brand-2);
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
}
.badge-x{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 13px;border-radius:999px;
  border:1px solid rgba(255,197,61,.45);
  background:rgba(255,197,61,.12);
  font-size:12.5px;color:var(--ink-900);white-space:nowrap;
}
.badge-x b{color:#B7791F;font-weight:800;font-variant-numeric:tabular-nums;}

/* ---------- breadcrumb ---------- */
.breadcrumb-x{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-400);margin-bottom:22px;
}
.breadcrumb-x a{color:var(--ink-400);}
.breadcrumb-x a:hover{color:var(--brand);}
.breadcrumb-x span.sep{color:#C9C4BC;}

/* ---------- hero ---------- */
.page-hero{padding:56px 0 76px;scroll-margin-top:var(--nav-h);position:relative;overflow:hidden;}
.page-hero::before{
  content:"";position:absolute;top:-160px;right:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(255,90,54,.16),rgba(255,90,54,0) 68%);
  pointer-events:none;
}
.hero-grid{
  display:grid;grid-template-columns:1.28fr 1fr;
  gap:48px;align-items:center;position:relative;
}
.hero-copy h1{
  font-size:clamp(30px,4.6vw,50px);
  line-height:1.16;letter-spacing:-.02em;font-weight:800;margin-top:16px;
}
.hero-copy .lead{margin-top:20px;font-size:17.5px;line-height:1.8;max-width:560px;}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-lg);box-shadow:var(--sh-2);
  background:var(--bg);
}
.float-card{
  position:absolute;left:-14px;bottom:26px;
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:14px 18px;box-shadow:var(--sh-2);
  display:flex;flex-direction:column;gap:6px;min-width:196px;
}
.float-card .fc-tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;color:var(--brand-2);
}
.float-card .fc-time{font-size:12.5px;color:var(--ink-400);font-variant-numeric:tabular-nums;}
.float-card strong{font-size:14.5px;color:var(--ink-900);font-weight:700;}

/* ---------- card wall ---------- */
.wall{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card-x{
  position:relative;
  background-color:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-c);
  padding:28px;
  transition:transform 220ms cubic-bezier(.2,.7,.3,1),box-shadow 220ms ease,border-color 220ms ease,background-image 220ms ease;
}
.card-x:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:transparent;
  background-image:linear-gradient(var(--surface),var(--surface)),var(--grad-brand);
  background-origin:border-box;
  background-clip:padding-box,border-box;
}
.card-ico{
  width:48px;height:48px;border-radius:15px;
  display:grid;place-items:center;font-size:18px;
  background:rgba(255,90,54,.1);color:var(--brand);
  margin-bottom:20px;
}
.card-x h3{font-size:20px;line-height:1.4;font-weight:700;margin-bottom:12px;}
.card-x p{font-size:15.5px;line-height:1.8;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:18px;font-size:14px;font-weight:700;color:var(--brand);
}
.text-link i{font-size:11px;transition:transform .2s;}
.text-link:hover i{transform:translateX(3px);}
.wall .card-x.is-feature{
  grid-column:span 2;
  display:flex;gap:24px;align-items:flex-start;
  background-image:linear-gradient(var(--surface),var(--surface)),var(--grad-brand);
  background-origin:border-box;background-clip:padding-box,border-box;
  border-color:transparent;
  box-shadow:var(--sh-2);
}
.wall .card-x.is-feature .card-ico{
  width:58px;height:58px;border-radius:18px;font-size:22px;margin-bottom:0;flex-shrink:0;
  background:var(--grad-brand);color:#fff;
}
.wall .card-x.is-feature h3{font-size:22px;}

/* ---------- checklist / zigzag ---------- */
.zig{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.zig.reverse .zig-media{order:2;}
.zig-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-c);box-shadow:var(--sh-2);}
.check-list{margin-top:26px;display:grid;gap:16px;}
.check-list li{display:flex;gap:14px;align-items:flex-start;}
.check-list .num{
  flex-shrink:0;width:30px;height:30px;border-radius:10px;
  display:grid;place-items:center;font-size:13px;font-weight:800;color:#fff;
  background:var(--grad-brand);font-variant-numeric:tabular-nums;
}
.check-list strong{display:block;color:var(--ink-900);font-size:16px;font-weight:700;margin-bottom:4px;}
.check-list span.desc{font-size:15px;line-height:1.75;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.step-x{
  background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:24px;
  position:relative;transition:transform 220ms cubic-bezier(.2,.7,.3,1),box-shadow 220ms;
}
.step-x:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.step-x .step-no{
  width:38px;height:38px;border-radius:12px;background:var(--grad-brand);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:15px;margin-bottom:18px;
  font-variant-numeric:tabular-nums;
}
.step-x h3{font-size:17.5px;font-weight:700;margin-bottom:10px;}
.step-x p{font-size:14.8px;line-height:1.75;}

/* ---------- dark block ---------- */
.dark-block{
  background-color:var(--ink-900);
  background-image:
    radial-gradient(circle at 12% 18%,rgba(255,90,54,.18),rgba(255,90,54,0) 55%),
    radial-gradient(circle at 88% 82%,rgba(124,58,237,.16),rgba(124,58,237,0) 55%);
  color:rgba(255,255,255,.72);
  padding:104px 0;scroll-margin-top:var(--nav-h);
}
.dark-block h2{color:#fff;}
.dark-block .eyebrow{color:var(--accent);}
.dark-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:start;}
.dark-grid p{color:rgba(255,255,255,.72);font-size:16px;}
.dark-list{display:grid;gap:16px;}
.dark-item{
  display:flex;gap:18px;align-items:flex-start;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-radius:20px;padding:22px 24px;
  transition:background .22s,border-color .22s,transform 220ms cubic-bezier(.2,.7,.3,1);
}
.dark-item:hover{background:rgba(255,255,255,.09);border-color:rgba(255,197,61,.5);transform:translateY(-3px);}
.dark-item .num{
  flex-shrink:0;width:34px;height:34px;border-radius:11px;
  display:grid;place-items:center;font-weight:800;font-size:14px;
  background:rgba(255,197,61,.16);color:var(--accent);font-variant-numeric:tabular-nums;
}
.dark-item h3{color:#fff;font-size:17px;font-weight:700;margin-bottom:8px;}
.dark-item p{font-size:15px;line-height:1.75;color:rgba(255,255,255,.72);}
.dark-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.badge-dark{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 13px;border-radius:999px;
  background:rgba(255,197,61,.12);border:1px solid rgba(255,197,61,.4);
  font-size:12.5px;color:rgba(255,255,255,.86);
}
.badge-dark b{color:var(--accent);font-variant-numeric:tabular-nums;}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto;display:grid;gap:12px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);
  border-radius:18px;padding:0 24px;position:relative;overflow:hidden;
  transition:box-shadow .22s,border-color .22s;
}
.faq-item[open]{box-shadow:var(--sh-2);border-color:rgba(255,90,54,.28);}
.faq-item[open]::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  border-radius:3px;background:var(--grad-brand);
}
.faq-item summary{
  cursor:pointer;list-style:none;
  padding:22px 40px 22px 0;
  font-size:16.5px;font-weight:700;color:var(--ink-900);line-height:1.6;
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;font-size:17px;font-weight:600;
  color:var(--brand);background:rgba(255,90,54,.1);
  transition:transform .2s ease,background .2s;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);background:rgba(229,50,122,.14);color:var(--brand-2);}
.faq-body{padding:0 40px 24px 0;font-size:15.5px;line-height:1.85;}

/* ---------- cta ---------- */
.cta-bar{
  background-color:var(--ink-900);
  background-image:
    radial-gradient(circle at 20% 20%,rgba(229,50,122,.18),rgba(229,50,122,0) 58%),
    radial-gradient(circle at 82% 78%,rgba(255,90,54,.16),rgba(255,90,54,0) 58%);
  border-radius:var(--r-lg);
  padding:48px 52px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-bar h2{color:#fff;font-size:clamp(22px,2.6vw,30px);}
.cta-bar p{color:rgba(255,255,255,.72);margin-top:12px;max-width:560px;font-size:15.5px;}

/* ---------- back home ---------- */
.back-home{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:88px;
  border-top:2px solid transparent;
  border-image:var(--grad-brand) 1;
  background:#fff;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding:64px 0 44px;
}
.footer-brand p{margin-top:18px;font-size:15px;line-height:1.8;max-width:340px;}
.footer-sub{display:flex;gap:10px;margin-top:22px;max-width:360px;}
.footer-sub input{
  flex:1;height:48px;border-radius:999px;border:1px solid var(--line);
  background:#fff;padding:0 18px;font-size:14px;
  transition:border-color .2s,box-shadow .2s;
}
.footer-sub input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,90,54,.14);}
.footer-sub button{
  height:48px;padding:0 22px;border:0;border-radius:999px;cursor:pointer;
  background:var(--grad-brand);color:#fff;font-weight:700;font-size:14.5px;
  transition:filter .2s,transform 220ms cubic-bezier(.2,.7,.3,1);
}
.footer-sub button:hover{filter:brightness(1.06);transform:translateY(-1px);}
.site-footer h4{font-size:15.5px;font-weight:700;color:var(--ink-900);margin-bottom:16px;}
.site-footer ul li{margin-bottom:11px;}
.site-footer ul a{font-size:14.6px;color:var(--ink-600);transition:color .2s,transform .2s;display:inline-block;}
.site-footer ul a:hover{color:var(--brand);transform:translateX(-2px);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-400);
}
.footer-bottom a{color:var(--ink-400);margin-left:18px;}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .zig{gap:40px;}
}
@media (max-width:991px){
  :root{--nav-h:100px;}
  .container-x{padding:0 20px;}
  .nav-top{height:56px;}
  .nav-tabsrow{height:44px;}
  .nav-search{display:none;}
  .nav-user{display:none;}
  .btn-burger{display:inline-flex;}
  .brand>span:last-child{font-size:16px;}
  .brand-mark{width:38px;height:38px;border-radius:12px;font-size:14px;}
  .section{padding:64px 0;}
  .section-tight{padding:52px 0;}
  .page-hero{padding:40px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-media img{aspect-ratio:16/10;}
  .float-card{position:static;left:auto;bottom:auto;margin-top:16px;min-width:0;width:100%;}
  .wall{grid-template-columns:repeat(2,minmax(0,1fr));}
  .wall .card-x.is-feature{grid-column:span 2;}
  .zig{grid-template-columns:1fr;}
  .zig.reverse .zig-media{order:0;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .dark-block{padding:72px 0;}
  .dark-grid{grid-template-columns:1fr;gap:34px;}
  .cta-bar{padding:38px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 36px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .section{padding:52px 0;}
  .section-head{margin-bottom:28px;}
  .wall{grid-template-columns:1fr;}
  .wall .card-x.is-feature{grid-column:span 1;flex-direction:column;gap:18px;}
  .wall .card-x.is-feature .card-ico{margin-bottom:0;}
  .steps{grid-template-columns:1fr;gap:14px;}
  .card-x{padding:22px;}
  .faq-item{padding:0 18px;}
  .faq-item summary{padding:18px 36px 18px 0;font-size:15.6px;}
  .faq-body{padding:0 12px 20px 0;font-size:15px;}
  .cta-bar{padding:30px 22px;border-radius:24px;}
  .dark-item{padding:18px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .footer-bottom a{margin-left:0;margin-right:16px;}
}
@media (max-width:520px){
  .container-x{padding:0 16px;}
  .brand small{display:none;}
  .btn-primary-x{height:46px;padding:0 20px;font-size:15px;}
  .btn-line-x{height:46px;padding:0 20px;font-size:15px;}
  .btn-row{gap:10px;}
  .btn-row .btn-x{width:100%;}
  .hero-copy .lead{font-size:16px;}
  .badge-row .badge-x{height:28px;font-size:12px;}
}

/* roulang page: category2 */
:root{
  --brand:#FF5A36;
  --brand-2:#E5327A;
  --accent:#FFC53D;
  --ok:#12B76A;
  --warn:#F79009;
  --ink-900:#14162B;
  --ink-600:#4A4F6B;
  --ink-400:#8B90A8;
  --line:#ECE9E4;
  --bg:#F8F6F2;
  --surface:#FFFFFF;
  --grad-brand:linear-gradient(118deg,#FF5A36 0%,#E5327A 60%,#7C3AED 100%);
  --sh-1:0 2px 8px rgba(20,22,43,.05);
  --sh-2:0 16px 36px -20px rgba(20,22,43,.18);
  --sh-3:0 26px 60px -24px rgba(229,50,122,.30);
  --r-sm:10px;
  --r-md:14px;
  --r-card:24px;
  --r-hero:28px;
  --nav-h:128px;
  --bs-primary:#FF5A36;
  --bs-body-color:#4A4F6B;
  --bs-border-color:#ECE9E4;
  --bs-body-font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--ink-900);margin:0;letter-spacing:-.01em;}
h1{font-size:clamp(30px,4.6vw,52px);font-weight:800;line-height:1.16;letter-spacing:-.02em;}
h2{font-size:clamp(24px,3vw,36px);font-weight:800;line-height:1.24;}
h3{font-size:21px;font-weight:700;}
h4{font-size:17px;font-weight:600;}
p{margin:0 0 1em;}
p+p{margin-top:1.1em;}
ul,ol{margin:0 0 1em;padding-left:1.4em;}
li{margin-bottom:.5em;}
li::marker{color:var(--brand);}
a{color:var(--ink-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand);}
img{max-width:100%;display:block;object-fit:cover;}
button,input{font-family:inherit;}
:focus-visible{outline:3px solid rgba(229,50,122,.35);outline-offset:2px;}
.container-x{max-width:1200px;margin:0 auto;padding:0 24px;}
.tnum{font-variant-numeric:tabular-nums;}
section[id]{scroll-margin-top:150px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:var(--sh-1);}
.nav-top{height:72px;display:flex;align-items:center;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink-900);font-size:17px;line-height:1.15;}
.brand:hover{color:var(--ink-900);}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:var(--grad-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;letter-spacing:.02em;
}
.brand small{display:block;font-size:12px;font-weight:500;color:var(--ink-400);margin-top:2px;}
.nav-search{position:relative;flex:1 1 auto;max-width:380px;margin-left:12px;}
.nav-search input{
  width:100%;height:44px;border-radius:999px;border:1px solid var(--line);
  background:var(--surface);padding:0 44px 0 18px;font-size:14px;color:var(--ink-600);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search input::placeholder{color:var(--ink-400);}
.nav-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,90,54,.12);}
.nav-search i{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--ink-400);font-size:14px;pointer-events:none;}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-user{font-size:13px;color:var(--ink-400);display:inline-flex;align-items:center;gap:6px;white-space:nowrap;}
.nav-user .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);display:inline-block;}
.btn-burger{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);color:var(--ink-900);font-size:16px;
}
.nav-tabsrow{height:56px;display:flex;align-items:center;}
.tabs-scroll{
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  padding:4px 0;width:100%;
}
.tabs-scroll::-webkit-scrollbar{display:none;}
.tab-pill{
  flex:0 0 auto;padding:8px 16px;border-radius:999px;font-size:14px;font-weight:600;
  border:1px solid var(--line);color:var(--ink-600);background:var(--surface);
  transition:all .22s cubic-bezier(.2,.7,.3,1);white-space:nowrap;
}
.tab-pill:hover{background:rgba(255,90,54,.06);color:var(--brand);border-color:rgba(255,90,54,.28);}
.tab-pill.active{background:var(--grad-brand);color:#fff;border-color:transparent;box-shadow:var(--sh-1);}
.mobile-menu{display:none;border-top:1px solid var(--line);background:rgba(255,255,255,.98);padding:8px 0 14px;}
.mobile-menu.open{display:block;}
.mobile-menu a{display:block;padding:12px 2px;font-weight:600;border-bottom:1px solid var(--line);}
.mobile-menu a:last-child{border-bottom:0;}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;font-size:15px;font-weight:700;
  border:1.5px solid transparent;cursor:pointer;transition:all .22s cubic-bezier(.2,.7,.3,1);
}
.btn-sm-x{height:40px;padding:0 18px;font-size:14px;}
.btn-primary-x{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary-x:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost-x{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost-x:hover{background:rgba(255,90,54,.08);color:var(--brand);}
.btn-dark-x{background:var(--ink-900);color:#fff;border-color:transparent;}
.btn-dark-x:hover{background:#1e2140;color:#fff;transform:translateY(-1px);}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 6px;}
.crumb{font-size:13px;color:var(--ink-400);display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb a{color:var(--ink-400);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:var(--ink-400);opacity:.6;}
.crumb .cur{color:var(--ink-600);font-weight:600;}

/* ---------- Hero ---------- */
.page-hero{padding:26px 0 60px;}
.hero-chip{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  font-size:13px;font-weight:700;color:var(--brand-2);
  background:rgba(229,50,122,.08);border:1px solid rgba(229,50,122,.22);margin-bottom:18px;
}
.page-hero h1{margin-bottom:16px;}
.page-hero h1 .grad{background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-lead{font-size:17px;max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 24px;}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;}
.data-pill{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  border:1px solid rgba(255,197,61,.45);background:rgba(255,197,61,.12);
  font-size:12px;color:var(--ink-900);font-weight:600;
}
.data-pill b{color:#B77400;font-size:14px;font-variant-numeric:tabular-nums;}
.hero-figure{position:relative;}
.hero-figure img{width:100%;aspect-ratio:4/3;border-radius:var(--r-hero);box-shadow:var(--sh-2);}
.float-card{
  position:absolute;left:-18px;bottom:-22px;background:var(--surface);border:1px solid var(--line);
  border-radius:20px;padding:16px 20px;box-shadow:var(--sh-2);max-width:270px;
}
.float-card .fc-tag{
  display:inline-block;font-size:12px;font-weight:700;color:var(--brand);
  background:rgba(255,90,54,.09);border-radius:999px;padding:3px 10px;margin-bottom:8px;
}
.float-card p{margin:0;font-size:13.5px;line-height:1.6;color:var(--ink-600);}

/* ---------- 文档布局 ---------- */
.doc-section{padding:20px 0 88px;}
.doc-layout{display:grid;grid-template-columns:262px minmax(0,1fr);gap:44px;align-items:start;}
.doc-side{position:sticky;top:150px;}
.toc-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);}
.toc-card h4{margin-bottom:14px;font-size:15px;color:var(--ink-900);letter-spacing:.02em;}
.toc-list{list-style:none;margin:0;padding:0;}
.toc-list li{margin:0 0 4px;}
.toc-list a{
  display:block;padding:9px 12px;border-radius:12px;font-size:14px;font-weight:600;
  border-left:3px solid transparent;color:var(--ink-600);
}
.toc-list a:hover{background:rgba(255,90,54,.06);color:var(--brand);border-left-color:rgba(255,90,54,.35);}
.toc-list a.on{background:rgba(255,90,54,.09);color:var(--brand);border-left-color:var(--brand);}
.toc-help{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);font-size:13px;color:var(--ink-400);line-height:1.7;}

.doc-main{min-width:0;}
.doc-sec{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;margin-bottom:24px;box-shadow:var(--sh-1);
}
.doc-sec h2{
  font-size:clamp(21px,2.4vw,27px);display:flex;align-items:flex-start;gap:12px;margin-bottom:16px;
}
.doc-sec h2::before{
  content:"";width:4px;height:22px;border-radius:3px;background:var(--grad-brand);
  flex:0 0 4px;margin-top:6px;
}
.doc-sec h3{margin:22px 0 10px;font-size:17.5px;}
.doc-figure{margin:22px 0 6px;}
.doc-figure img{width:100%;aspect-ratio:16/10;border-radius:18px;}
.doc-figure figcaption{font-size:13px;color:var(--ink-400);margin-top:10px;text-align:center;}
.tip-note{
  margin-top:22px;padding:16px 20px;border-left:4px solid var(--brand);
  border-radius:0 14px 14px 0;background:rgba(255,90,54,.06);
  font-size:14.5px;color:var(--ink-600);
}
.tip-note b{color:var(--ink-900);}
.step-list{list-style:none;padding:0;counter-reset:st;margin:0;}
.step-list li{
  position:relative;padding-left:42px;margin-bottom:14px;counter-increment:st;
}
.step-list li::before{
  content:counter(st);position:absolute;left:0;top:2px;
  width:26px;height:26px;border-radius:50%;background:var(--grad-brand);color:#fff;
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
}

/* ---------- 深色自查区 ---------- */
.dark-band{
  position:relative;color:rgba(255,255,255,.72);padding:104px 0;
  background:
    radial-gradient(560px 320px at 12% 8%,rgba(229,50,122,.18),transparent 65%),
    radial-gradient(520px 300px at 88% 92%,rgba(124,58,237,.16),transparent 68%),
    var(--ink-900);
  overflow:hidden;
}
.dark-band h2,.dark-band h3{color:#fff;}
.band-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px;}
.band-head p{margin:10px 0 0;max-width:560px;color:rgba(255,255,255,.72);}
.band-arrows{display:flex;gap:10px;}
.band-arrows button{
  width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.25);
  background:rgba(255,255,255,.06);color:#fff;cursor:pointer;transition:all .22s ease;
}
.band-arrows button:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.45);}
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 18px;scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:rgba(255,255,255,.22);border-radius:999px;}
.rail-card{
  flex:0 0 340px;scroll-snap-align:start;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);border-radius:20px;padding:26px;
  transition:all .22s cubic-bezier(.2,.7,.3,1);
}
.rail-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.28);}
.rail-card .rc-idx{font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.08em;}
.rail-card h3{font-size:19px;margin:12px 0 10px;}
.rail-card p{font-size:14.5px;margin:0 0 18px;color:rgba(255,255,255,.72);}
.dark-pill{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(255,197,61,.12);border:1px solid rgba(255,197,61,.4);
  font-size:12px;color:var(--accent);font-weight:600;margin-right:8px;
}
.dark-pill b{color:#FFD873;font-variant-numeric:tabular-nums;font-size:13px;}

/* ---------- FAQ ---------- */
.faq-section{padding:88px 0 20px;}
.faq-inner{max-width:860px;margin:0 auto;}
.faq-inner > h2{margin-bottom:12px;}
.faq-inner > p{margin-bottom:30px;}
.accordion-x .accordion-item{
  position:relative;border:1px solid var(--line);border-radius:18px;
  background:var(--surface);margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);
}
.accordion-x .accordion-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad-brand);
  opacity:0;transition:opacity .2s ease;
}
.accordion-x .accordion-item:has(.accordion-button:not(.collapsed))::before{opacity:1;}
.accordion-x .accordion-button{
  background:transparent;border:0;box-shadow:none;color:var(--ink-900);
  font-size:16.5px;font-weight:700;padding:20px 24px;line-height:1.5;
}
.accordion-x .accordion-button:not(.collapsed){background:transparent;color:var(--brand);}
.accordion-x .accordion-button:focus{box-shadow:none;outline:3px solid rgba(229,50,122,.28);outline-offset:-3px;}
.accordion-x .accordion-button::after{
  content:"+";display:flex;align-items:center;justify-content:center;
  width:28px;height:28px;flex:0 0 28px;border-radius:50%;
  background-color:transparent;background-image:none;
  color:var(--brand);font-size:19px;font-weight:700;line-height:1;
  transition:transform .2s ease,background-color .2s ease;margin-left:16px;
}
.accordion-x .accordion-button:not(.collapsed)::after{transform:rotate(45deg);background-color:rgba(255,90,54,.1);}
.accordion-x .accordion-body{padding:0 24px 22px;font-size:15.5px;color:var(--ink-600);}

/* ---------- CTA ---------- */
.cta-band{
  margin:70px 0 0;border-radius:var(--r-card);padding:44px 40px;
  background:
    radial-gradient(420px 240px at 10% 20%,rgba(229,50,122,.2),transparent 66%),
    radial-gradient(420px 240px at 92% 80%,rgba(124,58,237,.18),transparent 68%),
    var(--ink-900);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);}
.cta-band p{color:rgba(255,255,255,.72);margin:10px 0 0;max-width:520px;font-size:15px;}
.back-home{margin:34px 0 0;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;background:var(--surface);
  border-top:2px solid transparent;
  border-image:var(--grad-brand) 1;
  padding-top:56px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
.footer-brand p{font-size:14.5px;margin:16px 0 18px;color:var(--ink-600);}
.footer-sub{display:flex;gap:8px;max-width:340px;}
.footer-sub input{
  flex:1;height:48px;border-radius:999px;border:1px solid var(--line);
  background:var(--bg);padding:0 18px;font-size:14px;color:var(--ink-600);
}
.footer-sub input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,90,54,.12);}
.footer-sub button{
  height:48px;padding:0 20px;border-radius:999px;border:0;cursor:pointer;
  background:var(--grad-brand);color:#fff;font-weight:700;font-size:14px;
}
.footer-sub button:hover{filter:brightness(1.06);}
.site-footer h4{font-size:15px;margin-bottom:16px;}
.site-footer ul{list-style:none;padding:0;margin:0;}
.site-footer li{margin-bottom:10px;}
.site-footer li a{font-size:14.5px;display:inline-block;transition:transform .2s ease,color .2s ease;}
.site-footer li a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  margin-top:44px;padding:20px 0 28px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--ink-400);
}
.footer-bottom a{color:var(--ink-400);margin-left:16px;}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
}
@media (max-width:992px){
  :root{--nav-h:104px;}
  .nav-top{height:58px;gap:12px;}
  .nav-tabsrow{height:46px;}
  .nav-search{display:none;}
  .btn-burger{display:inline-flex;align-items:center;justify-content:center;}
  .nav-user{display:none;}
  .doc-layout{grid-template-columns:1fr;gap:22px;}
  .doc-side{position:static;}
  .toc-card{padding:16px;}
  .toc-list{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;}
  .toc-list::-webkit-scrollbar{display:none;}
  .toc-list li{margin:0;}
  .toc-list a{white-space:nowrap;border-left:0;border-radius:999px;border:1px solid var(--line);}
  .toc-list a.on{border-color:transparent;background:var(--grad-brand);color:#fff;}
  .toc-help{display:none;}
  .float-card{position:static;margin-top:16px;max-width:none;box-shadow:var(--sh-1);}
  .dark-band{padding:64px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .container-x{padding:0 16px;}
  .page-hero{padding:14px 0 42px;}
  .doc-section{padding:12px 0 52px;}
  .doc-sec{padding:22px;border-radius:20px;}
  .hero-actions .btn-x{width:100%;}
  .hero-figure img{aspect-ratio:16/10;}
  .faq-section{padding:52px 0 0;}
  .cta-band{padding:30px 22px;border-radius:20px;}
  .cta-band .btn-x{width:100%;}
  .rail-card{flex:0 0 82%;}
  .band-arrows{display:none;}
  .site-footer{margin-top:60px;}
  h2{font-size:clamp(21px,5.4vw,28px);}
}
@media (max-width:576px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .footer-bottom a{margin-left:0;margin-right:16px;}
  .doc-sec{padding:20px 16px;border-radius:18px;}
  .data-pill{font-size:11.5px;}
}

/* roulang page: category3 */
:root{
  --brand:#FF5A36;
  --brand-2:#E5327A;
  --accent:#FFC53D;
  --ok:#12B76A;
  --warn:#F79009;
  --ink-900:#14162B;
  --ink-600:#4A4F6B;
  --ink-400:#8B90A8;
  --line:#ECE9E4;
  --bg:#F8F6F2;
  --surface:#FFFFFF;
  --grad-brand:linear-gradient(118deg,#FF5A36 0%,#E5327A 60%,#7C3AED 100%);
  --sh-1:0 2px 8px rgba(20,22,43,.05);
  --sh-2:0 16px 36px -20px rgba(20,22,43,.18);
  --sh-3:0 26px 60px -24px rgba(229,50,122,.30);
  --r-sm:10px;
  --r-md:14px;
  --r-card:24px;
  --r-lg:28px;
  --nav-h:128px;
  --bs-primary:#FF5A36;
  --bs-body-color:#4A4F6B;
  --bs-border-color:#ECE9E4;
  --bs-body-bg:#F8F6F2;
  --bs-link-color:#FF5A36;
  --bs-link-hover-color:#E5327A;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
button{font-family:inherit}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);line-height:1.24}
p{margin:0}
p+p{margin-top:1.1em}
ul{margin:0;padding:0;list-style:none}
input,button,textarea{font:inherit}
:focus-visible{outline:3px solid rgba(229,50,122,.35);outline-offset:2px;border-radius:6px}
section[id],div[id]{scroll-margin-top:132px}

.container-x{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,3vw,36px);font-weight:800;letter-spacing:-.01em}
.section-head p{margin-top:14px;color:var(--ink-600)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--brand-2);text-transform:uppercase;
  padding:6px 14px;border-radius:999px;
  background:rgba(229,50,122,.08);
  border:1px solid rgba(229,50,122,.18);
  margin-bottom:16px;
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:var(--sh-1)}
.nav-top{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--ink-900)}
.brand-mark{
  width:42px;height:42px;border-radius:13px;
  background:var(--grad-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;letter-spacing:.02em;
  box-shadow:0 12px 26px -14px rgba(229,50,122,.85);
}
.brand span{font-weight:800;font-size:17px;line-height:1.2;color:var(--ink-900);display:flex;flex-direction:column}
.brand small{font-size:11.5px;font-weight:500;color:var(--ink-400);letter-spacing:.04em;line-height:1.4;margin-top:2px}
.brand:hover span{color:var(--ink-900)}
.nav-search{position:relative;flex:1 1 auto;max-width:360px}
.nav-search input{
  width:100%;height:44px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
  padding:0 42px 0 18px;font-size:14px;color:var(--ink-900);
  transition:border-color .2s,box-shadow .2s;
}
.nav-search input::placeholder{color:var(--ink-400)}
.nav-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,90,54,.12)}
.nav-search i{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--ink-400);font-size:14px;pointer-events:none}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}
.nav-user{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-400);white-space:nowrap}
.nav-user .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(18,183,106,.18)}
.btn-burger{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink-900);
  align-items:center;justify-content:center;cursor:pointer;
}
.btn-burger:hover{border-color:var(--brand);color:var(--brand)}
.nav-tabsrow{padding:0 0 12px;overflow:hidden}
.tabs-scroll{
  display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;
  -ms-overflow-style:none;padding-bottom:2px;
}
.tabs-scroll::-webkit-scrollbar{display:none}
.tab-pill{
  flex:0 0 auto;display:inline-flex;align-items:center;height:38px;
  padding:0 18px;border-radius:999px;font-size:14px;font-weight:600;
  color:var(--ink-600);border:1px solid var(--line);background:#fff;
  transition:background .2s,color .2s,border-color .2s,transform .2s;
  white-space:nowrap;
}
.tab-pill:hover{background:rgba(255,90,54,.06);color:var(--brand);border-color:rgba(255,90,54,.28)}
.tab-pill.active{background:var(--grad-brand);color:#fff;border-color:transparent;box-shadow:0 12px 26px -16px rgba(229,50,122,.85)}
.tab-pill.active:hover{color:#fff}
.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff}
.mobile-menu.open{display:block}
.mobile-menu .container-x{display:flex;flex-direction:column;padding-top:10px;padding-bottom:14px}
.mobile-menu a{padding:12px 2px;font-size:15px;font-weight:600;color:var(--ink-900);border-bottom:1px solid var(--line)}
.mobile-menu a:last-child{border-bottom:0}

/* ============ 按钮 ============ */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:700;border:0;cursor:pointer;white-space:nowrap;
  transition:transform .22s cubic-bezier(.2,.7,.3,1),filter .22s,box-shadow .22s,background .22s;
}
.btn-primary-x{background:var(--grad-brand);color:#fff;box-shadow:0 16px 32px -20px rgba(229,50,122,.9)}
.btn-primary-x:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px)}
.btn-ghost-x{background:#fff;border:1.5px solid var(--brand);color:var(--brand)}
.btn-ghost-x:hover{background:rgba(255,90,54,.08);color:var(--brand)}
.btn-dark-x{background:var(--ink-900);color:#fff}
.btn-dark-x:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.12)}
.btn-sm-x{height:42px;padding:0 20px;font-size:14px}
.btn-x[disabled]{opacity:.45;pointer-events:none}
.btn-x:focus-visible{outline:3px solid rgba(229,50,122,.35);outline-offset:2px}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);padding:24px 0 0}
.crumb a{color:var(--ink-400)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C9C4BC}

/* ============ Hero ============ */
.page-hero{padding:26px 0 0}
.hero-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:32px;align-items:center;margin-top:26px}
.hero-copy{grid-column:span 7}
.hero-media{grid-column:span 5}
.hero-copy h1{font-size:clamp(30px,4.6vw,48px);font-weight:800;line-height:1.16;letter-spacing:-.02em}
.hero-copy h1 .hl{
  background:var(--grad-brand);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-copy .lead{margin-top:20px;font-size:17px;color:var(--ink-600);max-width:560px}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.badge-x{
  display:inline-flex;align-items:center;gap:8px;
  height:34px;padding:0 14px;border-radius:999px;
  border:1px solid rgba(255,197,61,.4);background:rgba(255,197,61,.12);
  font-size:12.5px;color:var(--ink-900);
}
.badge-x b{color:#B47400;font-weight:800;font-size:14px}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-lg);box-shadow:var(--sh-2);
}
.float-card{
  position:absolute;left:-18px;bottom:22px;
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:14px 18px;box-shadow:var(--sh-2);max-width:230px;
}
.float-card .tag{
  display:inline-block;font-size:11.5px;font-weight:700;color:var(--brand-2);
  background:rgba(229,50,122,.09);border-radius:999px;padding:3px 10px;margin-bottom:8px;
}
.float-card p{font-size:13.5px;color:var(--ink-900);font-weight:600;line-height:1.5}
.float-card span{font-size:12px;color:var(--ink-400);display:block;margin-top:4px}

/* ============ 时间线 ============ */
.tl-wrap{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.timeline{position:relative;padding:8px 0 0}
.timeline::before{
  content:"";position:absolute;left:50%;top:0;bottom:44px;width:2px;margin-left:-1px;
  background:linear-gradient(180deg,rgba(255,90,54,.65) 0%,rgba(229,50,122,.5) 52%,rgba(124,58,237,.28) 100%);
  border-radius:2px;
}
.tl-item{display:grid;grid-template-columns:1fr 96px 1fr;align-items:start;margin-bottom:26px}
.tl-node{
  grid-column:2;justify-self:center;
  width:56px;height:56px;border-radius:50%;
  background:var(--grad-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:17px;
  box-shadow:0 16px 30px -16px rgba(229,50,122,.75);
}
.tl-card{
  grid-column:1;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s,border-color .22s;
}
.tl-item:nth-child(even) .tl-card{grid-column:3}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(255,90,54,.35)}
.tl-card h3{font-size:20px;font-weight:700;margin-bottom:10px}
.tl-card p{font-size:15.5px;color:var(--ink-600)}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;
  border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(255,90,54,.08);color:#C2401F;border:1px solid rgba(255,90,54,.18);
}
.chip.magenta{background:rgba(229,50,122,.08);color:#B02360;border-color:rgba(229,50,122,.2)}
.chip.gold{background:rgba(255,197,61,.14);color:#96660A;border-color:rgba(255,197,61,.36)}
.chip.green{background:rgba(18,183,106,.1);color:#0B7C48;border-color:rgba(18,183,106,.24)}

/* ============ 对比条 ============ */
.compare-bar{
  display:grid;grid-template-columns:repeat(3,1fr);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
}
.cmp-col{padding:30px 28px;border-right:1px solid var(--line);position:relative}
.cmp-col:last-child{border-right:0}
.cmp-col::after{content:"";position:absolute;left:28px;right:28px;top:0;height:3px;background:var(--grad-brand);border-radius:0 0 4px 4px;opacity:.85}
.cmp-col h3{font-size:19px;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:10px}
.cmp-col h3 i{color:var(--brand)}
.cmp-col p{font-size:15px;color:var(--ink-600)}
.cmp-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.cmp-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--ink-600)}
.cmp-list li::before{
  content:"";position:absolute;left:0;top:.68em;width:6px;height:6px;border-radius:50%;background:var(--brand);
}

/* ============ 设备卡片横滚 ============ */
.rail-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.rail{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 22px;scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:8px}
.rail::-webkit-scrollbar-thumb{background:#DDD8D0;border-radius:999px}
.device-card{
  flex:0 0 316px;scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s,border-color .22s;
}
.device-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(229,50,122,.3)}
.device-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.device-card .body{padding:22px 24px 26px}
.device-card h3{font-size:18px;font-weight:700;margin:12px 0 8px}
.device-card p{font-size:14.5px;color:var(--ink-600)}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:18px;margin-bottom:12px;overflow:hidden;
  transition:box-shadow .2s,border-color .2s;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--grad-brand);opacity:0;transition:opacity .2s;
}
.faq-item.open{box-shadow:var(--sh-2);border-color:rgba(229,50,122,.25)}
.faq-item.open::before{opacity:1}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 26px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink-900);
}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--line);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;transition:transform .2s ease,background .2s;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:rgba(255,90,54,.09)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease}
.faq-a p{padding:0 26px 24px;font-size:15.5px;color:var(--ink-600)}

/* ============ CTA ============ */
.cta-band{
  background:var(--ink-900);
  background-image:
    radial-gradient(600px 300px at 12% 0%,rgba(255,90,54,.18),transparent 70%),
    radial-gradient(560px 320px at 92% 100%,rgba(229,50,122,.16),transparent 70%);
  color:#fff;border-radius:var(--r-lg);
  padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,32px);font-weight:800}
.cta-band p{color:rgba(255,255,255,.72);margin-top:12px;max-width:620px;font-size:15.5px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:88px;background:#fff;
  border-top:2px solid transparent;
  border-image:var(--grad-brand) 1;
  position:relative;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  padding:64px 0 40px;
}
.footer-brand p{font-size:14.5px;color:var(--ink-600);margin-top:18px;max-width:340px}
.footer-sub{display:flex;gap:8px;margin-top:20px;max-width:360px}
.footer-sub input{
  flex:1 1 auto;height:48px;border-radius:999px;border:1px solid var(--line);
  padding:0 18px;font-size:14px;background:#fff;color:var(--ink-900);
  transition:border-color .2s,box-shadow .2s;
}
.footer-sub input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,90,54,.12)}
.footer-sub button{
  height:48px;padding:0 22px;border-radius:999px;border:0;cursor:pointer;
  background:var(--grad-brand);color:#fff;font-weight:700;font-size:14px;
  transition:filter .2s,transform .2s;
}
.footer-sub button:hover{filter:brightness(1.06);transform:translateY(-1px)}
.site-footer h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--ink-900)}
.site-footer ul{display:flex;flex-direction:column;gap:12px}
.site-footer ul a{font-size:14.5px;color:var(--ink-600);display:inline-block;transition:color .2s,transform .2s}
.site-footer ul a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding:22px 0;font-size:13px;color:var(--ink-400);
}
.footer-bottom a{color:var(--ink-400);margin-left:16px}
.footer-bottom a:hover{color:var(--brand)}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .hero-copy{grid-column:span 12}
  .hero-media{grid-column:span 12}
  .float-card{left:auto;right:18px}
}
@media (max-width:992px){
  .nav-search{display:none}
  .btn-burger{display:flex}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .hero-media img{aspect-ratio:16/10}
  .section{padding:64px 0}
  .cta-band{padding:40px 32px}
}
@media (max-width:768px){
  body{font-size:16px}
  .container-x{padding:0 16px}
  .section{padding:52px 0}
  .nav-top{height:60px;gap:12px}
  .nav-user{display:none}
  .brand-mark{width:38px;height:38px;border-radius:12px;font-size:14px}
  .brand span{font-size:15.5px}
  .tab-pill{height:34px;padding:0 14px;font-size:13.5px}
  .timeline::before{left:21px;bottom:20px}
  .tl-item{grid-template-columns:44px 1fr;gap:0 16px}
  .tl-node{grid-column:1;width:44px;height:44px;font-size:15px}
  .tl-card{grid-column:2 !important;padding:20px}
  .compare-bar{grid-template-columns:1fr}
  .cmp-col{border-right:0;border-bottom:1px solid var(--line)}
  .cmp-col:last-child{border-bottom:0}
  .compare-bar{border-radius:20px}
  .device-card{flex:0 0 268px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 32px}
  .footer-sub{max-width:100%}
  .cta-band{padding:32px 22px;border-radius:22px}
  .cta-actions{width:100%}
  .cta-actions .btn-x{flex:1 1 auto}
}
@media (max-width:576px){
  .hero-btns .btn-x{width:100%}
  .faq-q{padding:18px 20px;font-size:16px}
  .faq-a p{padding:0 20px 20px}
  .float-card{position:static;margin-top:16px;max-width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

/* roulang page: category4 */
:root{
  --brand:#FF5A36;
  --brand-2:#E5327A;
  --accent:#FFC53D;
  --ok:#12B76A;
  --warn:#F79009;
  --ink-900:#14162B;
  --ink-600:#4A4F6B;
  --ink-400:#8B90A8;
  --line:#ECE9E4;
  --bg:#F8F6F2;
  --surface:#FFFFFF;
  --grad-brand:linear-gradient(118deg,#FF5A36 0%,#E5327A 60%,#7C3AED 100%);
  --r-sm:10px;
  --r-md:14px;
  --r-card:24px;
  --r-lg:28px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(20,22,43,.05);
  --sh-2:0 16px 36px -20px rgba(20,22,43,.18);
  --sh-3:0 26px 60px -24px rgba(229,50,122,.30);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:128px;
  --bs-primary:#FF5A36;
  --bs-body-color:#4A4F6B;
  --bs-border-color:#ECE9E4;
  --bs-body-font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:800;letter-spacing:-.01em;}
p{margin:0;}
p+p{margin-top:1.1em;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:3px solid rgba(229,50,122,.35);outline-offset:2px;border-radius:6px;}
[id]{scroll-margin-top:var(--nav-h);}

.container-x{max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.scrolled{box-shadow:var(--sh-1);}
.nav-top{
  display:grid;grid-template-columns:auto minmax(0,1fr) auto;
  gap:24px;align-items:center;height:72px;
}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;color:var(--ink-900);line-height:1.15;}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  background:var(--grad-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;letter-spacing:.02em;
  box-shadow:0 10px 22px -12px rgba(229,50,122,.75);
}
.brand > span:last-child{display:flex;flex-direction:column;font-size:16.5px;}
.brand small{font-size:11.5px;font-weight:600;color:var(--ink-400);letter-spacing:.04em;margin-top:2px;}
.nav-search{position:relative;justify-self:center;width:100%;max-width:420px;}
.nav-search input{
  width:100%;height:44px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--bg);
  padding:0 44px 0 18px;color:var(--ink-600);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.nav-search input::placeholder{color:var(--ink-400);}
.nav-search input:focus{
  outline:none;background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(255,90,54,.12);
}
.nav-search i{position:absolute;right:18px;top:50%;transform:translateY(-50%);color:var(--ink-400);font-size:14px;pointer-events:none;}
.nav-actions{display:flex;align-items:center;gap:14px;}
.nav-user{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-400);white-space:nowrap;}
.nav-user .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(18,183,106,.15);}
.btn-burger{
  display:none;width:42px;height:42px;border-radius:13px;
  border:1px solid var(--line);background:#fff;color:var(--ink-900);
  align-items:center;justify-content:center;
}
.nav-tabsrow{padding:0 0 12px;}
.tabs-scroll{
  display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  padding-bottom:2px;
}
.tabs-scroll::-webkit-scrollbar{display:none;}
.tab-pill{
  flex:0 0 auto;height:38px;display:inline-flex;align-items:center;
  padding:0 18px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;
  font-size:14.5px;font-weight:600;color:var(--ink-600);
  transition:all .2s var(--ease);white-space:nowrap;
}
.tab-pill:hover{background:rgba(255,90,54,.06);border-color:rgba(255,90,54,.3);color:var(--brand);}
.tab-pill.active{background:var(--grad-brand);border-color:transparent;color:#fff;box-shadow:0 10px 22px -14px rgba(229,50,122,.9);}
.mobile-menu{
  display:none;border-top:1px solid var(--line);background:#fff;
  padding:10px 0 16px;
}
.mobile-menu.open{display:block;}
.mobile-menu a{
  display:block;padding:11px 0;font-size:15px;font-weight:600;
  color:var(--ink-900);border-bottom:1px solid var(--line);
}
.mobile-menu a:last-child{border-bottom:none;}

/* ============ 按钮 ============ */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15.5px;font-weight:700;border:1.5px solid transparent;
  cursor:pointer;transition:all .22s var(--ease);white-space:nowrap;
}
.btn-sm-x{height:42px;padding:0 20px;font-size:14.5px;}
.btn-primary-x{background:var(--grad-brand);color:#fff;box-shadow:0 14px 28px -16px rgba(229,50,122,.85);}
.btn-primary-x:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);}
.btn-ghost-x{background:transparent;border-color:rgba(255,90,54,.55);color:var(--brand);}
.btn-ghost-x:hover{background:rgba(255,90,54,.08);color:var(--brand);}
.btn-dark-x{background:var(--ink-900);color:#fff;}
.btn-dark-x:hover{color:#fff;filter:brightness(1.15);transform:translateY(-1px);}
.btn-light-x{background:#fff;color:var(--ink-900);}
.btn-light-x:hover{color:var(--brand);transform:translateY(-1px);}
.btn-x[disabled]{opacity:.45;cursor:not-allowed;}

/* ============ 通用块 ============ */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--brand-2);text-transform:uppercase;margin-bottom:14px;
}
.sec-label::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--grad-brand);}
.sec-head h2{font-size:clamp(24px,3vw,36px);line-height:1.24;}
.sec-head p{margin-top:14px;font-size:16.5px;color:var(--ink-600);}

.badge-x{
  display:inline-flex;align-items:center;gap:7px;height:26px;
  padding:0 13px;border-radius:var(--r-pill);
  border:1px solid rgba(255,197,61,.4);background:rgba(255,197,61,.12);
  font-size:12.5px;font-weight:600;color:var(--ink-600);
}
.badge-x b{color:#A9700A;font-weight:800;font-variant-numeric:tabular-nums;}
.badge-x.dark{background:rgba(255,197,61,.14);border-color:rgba(255,197,61,.35);color:rgba(255,255,255,.8);}
.badge-x.dark b{color:var(--accent);}

.chip{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;
  border-radius:var(--r-pill);font-size:12.5px;font-weight:600;
  background:rgba(229,50,122,.09);color:var(--brand-2);
}

/* ============ 面包屑 ============ */
.crumb{font-size:13px;color:var(--ink-400);padding:22px 0 0;display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumb a{color:var(--ink-400);}
.crumb a:hover{color:var(--brand);}
.crumb span.sep{color:#C9C5BE;}

/* ============ Hero ============ */
.hero{padding:30px 0 76px;}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center;}
.hero h1{
  font-size:clamp(30px,4.6vw,50px);
  line-height:1.16;letter-spacing:-.02em;
  margin:16px 0 18px;
}
.hero h1 em{font-style:normal;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-lead{font-size:17.5px;color:var(--ink-600);max-width:560px;}
.hero-search{
  margin:28px 0 22px;max-width:520px;
  display:flex;gap:10px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:6px 6px 6px 20px;box-shadow:var(--sh-1);
}
.hero-search input{
  flex:1 1 auto;min-width:0;height:44px;border:none;background:transparent;color:var(--ink-600);
}
.hero-search input:focus{outline:none;}
.hero-search input::placeholder{color:var(--ink-400);}
.hero-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px;}
.hero-media{position:relative;}
.hero-media img{width:100%;aspect-ratio:4/3.4;border-radius:var(--r-lg);box-shadow:var(--sh-2);}
.hero-float{
  position:absolute;left:-22px;bottom:26px;
  background:#fff;border-radius:18px;padding:16px 18px;
  box-shadow:var(--sh-2);border:1px solid var(--line);min-width:196px;
}
.hero-float .chip{margin-bottom:8px;}
.hero-float h4{font-size:15px;font-weight:700;line-height:1.45;}
.hero-float time{display:block;margin-top:6px;font-size:12.5px;color:var(--ink-400);font-variant-numeric:tabular-nums;}

/* ============ 横向滚动轨 ============ */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 22px;scrollbar-width:none;-ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-card{
  flex:0 0 340px;scroll-snap-align:start;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(229,50,122,.35);}
.rail-card img{width:100%;aspect-ratio:16/9;}
.rail-card-body{padding:22px 24px 26px;}
.rail-card-body h3{font-size:19px;margin:12px 0 8px;}
.rail-card-body p{font-size:15px;color:var(--ink-600);}
.rail-nav{display:flex;gap:10px;justify-content:flex-end;margin-top:-6px;}
.rail-btn{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--line);
  background:#fff;color:var(--ink-900);display:inline-flex;align-items:center;justify-content:center;
  transition:all .2s var(--ease);
}
.rail-btn:hover{background:var(--grad-brand);color:#fff;border-color:transparent;}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:minmax(0,240px) minmax(0,1fr);gap:48px;align-items:start;}
.faq-side{
  position:sticky;top:calc(var(--nav-h) + 20px);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 22px;
}
.faq-side h3{font-size:15.5px;margin-bottom:14px;}
.faq-side a{
  display:block;font-size:14.5px;color:var(--ink-600);
  padding:9px 0 9px 14px;border-left:2px solid var(--line);
  transition:all .2s var(--ease);
}
.faq-side a:hover,.faq-side a.on{border-left-color:var(--brand);color:var(--brand);padding-left:18px;}
.faq-group + .faq-group{margin-top:56px;}
.faq-group > h2{font-size:clamp(21px,2.4vw,28px);margin-bottom:20px;}
.faq-group > h2 span{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:10px;background:var(--grad-brand);
  color:#fff;font-size:14px;margin-right:12px;vertical-align:2px;
}
.faq-item{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:18px;margin-bottom:12px;overflow:hidden;
  transition:box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--grad-brand);opacity:0;transition:opacity .2s var(--ease);
}
.faq-item.open{box-shadow:var(--sh-2);border-color:rgba(229,50,122,.28);}
.faq-item.open::before{opacity:1;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  text-align:left;padding:20px 22px 20px 24px;
  background:transparent;border:none;cursor:pointer;
  font-size:16.5px;font-weight:700;color:var(--ink-900);
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--line);color:var(--brand-2);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--grad-brand);color:#fff;border-color:transparent;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-a-inner{padding:0 24px 22px;font-size:15.8px;color:var(--ink-600);}
.faq-a-inner strong{color:var(--ink-900);}

/* ============ 排查步骤 ============ */
.tip-bar{
  display:flex;gap:16px;align-items:flex-start;
  background:rgba(255,90,54,.06);border-left:3px solid var(--brand);
  border-radius:14px;padding:18px 22px;margin-top:18px;font-size:15.5px;
}
.tip-bar i{color:var(--brand-2);margin-top:5px;}
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:12px;}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.step-no{
  width:38px;height:38px;border-radius:12px;background:var(--grad-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;
  margin-bottom:16px;font-variant-numeric:tabular-nums;
}
.step h3{font-size:18px;margin-bottom:10px;}
.step p{font-size:15px;}

/* ============ 联系卡 ============ */
.contact-card{
  position:relative;background:var(--surface);border-radius:var(--r-card);
  padding:44px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;
  box-shadow:var(--sh-1);
}
.contact-card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1.5px;
  background:var(--grad-brand);
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;
}
.contact-card h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.contact-card p{font-size:16px;max-width:620px;}
.contact-actions{display:flex;flex-direction:column;gap:12px;min-width:190px;}
.contact-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}

/* ============ 深色 CTA ============ */
.cta-band{
  position:relative;background:var(--ink-900);border-radius:var(--r-lg);
  padding:56px 48px;overflow:hidden;color:#fff;
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(520px 260px at 8% 0%,rgba(255,90,54,.18),transparent 70%),
    radial-gradient(460px 240px at 92% 100%,rgba(124,58,237,.16),transparent 70%);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.8vw,32px);line-height:1.28;position:relative;z-index:1;}
.cta-band p{color:rgba(255,255,255,.72);margin-top:12px;font-size:16px;position:relative;z-index:1;max-width:640px;}
.cta-band .btn-x{position:relative;z-index:1;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:88px;background:#fff;border-top:2px solid transparent;
  border-image:var(--grad-brand) 1;padding-top:64px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand p{margin:18px 0 20px;font-size:15px;color:var(--ink-600);max-width:340px;}
.footer-sub{display:flex;gap:8px;background:var(--bg);border:1px solid var(--line);border-radius:var(--r-pill);padding:5px 5px 5px 16px;max-width:360px;}
.footer-sub input{flex:1 1 auto;min-width:0;height:42px;border:none;background:transparent;color:var(--ink-600);}
.footer-sub input:focus{outline:none;}
.footer-sub button{
  height:42px;padding:0 20px;border-radius:var(--r-pill);border:none;
  background:var(--grad-brand);color:#fff;font-weight:700;font-size:14.5px;cursor:pointer;
  transition:filter .2s var(--ease);
}
.footer-sub button:hover{filter:brightness(1.06);}
.site-footer h4{font-size:15.5px;margin-bottom:16px;}
.site-footer ul li{margin-bottom:10px;}
.site-footer ul a{font-size:14.5px;color:var(--ink-600);display:inline-block;transition:all .2s var(--ease);}
.site-footer ul a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-400);
}
.footer-bottom a{color:var(--ink-400);margin-left:16px;}
.footer-bottom a:hover{color:var(--brand);}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .faq-wrap{grid-template-columns:minmax(0,200px) minmax(0,1fr);gap:32px;}
}
@media (max-width:992px){
  :root{--nav-h:104px;}
  .nav-top{grid-template-columns:auto 1fr auto;height:60px;gap:14px;}
  .nav-search{display:none;}
  .nav-user{display:none;}
  .btn-burger{display:inline-flex;}
  .section{padding:64px 0;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-media{order:2;}
  .hero-float{position:static;margin-top:-40px;margin-left:18px;max-width:260px;}
  .steps{grid-template-columns:1fr;}
  .faq-wrap{grid-template-columns:1fr;}
  .faq-side{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .contact-card{grid-template-columns:1fr;padding:34px;}
  .contact-actions{flex-direction:row;flex-wrap:wrap;min-width:0;}
  .cta-band{grid-template-columns:1fr;padding:44px 32px;}
}
@media (max-width:768px){
  .container-x{padding:0 16px;}
  body{font-size:16px;}
  .section{padding:52px 0;}
  .hero{padding:16px 0 52px;}
  .hero-search{flex-direction:column;align-items:stretch;border-radius:20px;padding:12px;}
  .hero-search .btn-x{width:100%;}
  .rail-card{flex:0 0 82%;}
  .rail-nav{display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .footer-bottom a{margin:0 16px 0 0;}
}
@media (max-width:520px){
  .brand small{display:none;}
  .hero-stats{gap:8px;}
  .faq-q{font-size:15.5px;padding:18px 18px 18px 20px;}
  .faq-a-inner{padding:0 20px 20px;}
  .contact-card{padding:26px 22px;}
  .cta-band{padding:36px 22px;}
}