:root{
  --bg:#17171A;
  --panel:#222226;
  --panel-soft:#1D1D21;
  --panel-deep:#121214;
  --text:#F1EEEE;
  --muted:#A9A3A6;
  --brand:#C84A5A;
  --brand-deep:#A53A48;
  --accent:#E59A3A;
  --copper:#D08A48;
  --line:#34343A;
  --line-soft:#29292F;
  --ok:#8DB892;
  --max:1180px;
  --narrow:860px;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 18px 60px rgba(0,0,0,.24);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
body.modal-open{overflow:hidden}
a{color:inherit;text-decoration:none}
a:hover{color:#fff}
img{display:block;max-width:100%;height:auto}
button,input,textarea{font:inherit}
button{cursor:pointer}
.wrap{width:min(var(--max),calc(100% - 40px));margin-inline:auto}
.narrow{width:min(var(--narrow),calc(100% - 40px));margin-inline:auto}
.skip-link{position:absolute;left:20px;top:-100px;z-index:1000;background:#fff;color:#111;padding:10px 16px;border-radius:10px}
.skip-link:focus{top:14px}
.site-header{position:sticky;top:0;z-index:100;background:rgba(18,18,20,.94);backdrop-filter:blur(16px);border-bottom:1px solid var(--line-soft)}
.header-inner{min-height:76px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:12px;min-width:210px}
.brand img{width:46px;height:46px;object-fit:cover;border-radius:14px;background:var(--panel)}
.brand span{display:grid;line-height:1.25}
.brand b{font-size:19px;letter-spacing:.02em}
.brand small{margin-top:4px;color:var(--muted);font-size:12px}
.site-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.site-nav a{padding:9px 11px;border-radius:10px;color:#C9C4C6;font-size:14px;white-space:nowrap}
.site-nav a:hover,.site-nav a.is-active{background:#28282D;color:#fff}
.search-open,.menu-toggle{border:1px solid var(--line);background:#202024;color:var(--text);padding:9px 14px;border-radius:10px}
.menu-toggle{display:none}
.hero{padding:62px 0 38px;border-bottom:1px solid var(--line-soft)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(340px,.92fr);gap:56px;align-items:center}
.hero-copy{max-width:700px}
.eyebrow{margin:0 0 12px;color:var(--accent);font-size:13px;font-weight:700;letter-spacing:.13em;text-transform:uppercase}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(38px,5vw,64px);line-height:1.08;letter-spacing:-.035em;margin-bottom:22px}
h2{font-size:clamp(27px,3vw,40px);line-height:1.18;letter-spacing:-.025em;margin-bottom:14px}
h3{font-size:20px;line-height:1.35;margin-bottom:10px}
.lede{font-size:19px;color:#D8D2D4;max-width:720px;line-height:1.8}
.hero-note{display:flex;gap:12px;align-items:flex-start;margin-top:22px;padding:14px 16px;border-left:3px solid var(--brand);background:#202024;border-radius:0 12px 12px 0;color:#CFC8CA}
.hero-note strong{color:#fff;white-space:nowrap}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;border-radius:11px;border:1px solid transparent;font-weight:700}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:#D55464}
.btn-secondary{border-color:#45454D;background:#202024;color:#F0EBED}
.btn-secondary:hover{background:#2A2A30}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:24px;border:1px solid #393940;box-shadow:var(--shadow)}
.hero-caption{position:absolute;left:22px;right:22px;bottom:22px;background:rgba(18,18,20,.88);border:1px solid rgba(255,255,255,.08);backdrop-filter:blur(12px);padding:15px 17px;border-radius:13px}
.hero-caption strong{display:block;margin-bottom:3px}
.hero-caption span{font-size:13px;color:#C0BABC}
.section{padding:66px 0;border-bottom:1px solid var(--line-soft)}
.section-deep{background:var(--panel-deep)}
.section-soft{background:var(--panel-soft)}
.section-head{max-width:760px;margin-bottom:30px}
.section-head p:not(.eyebrow){color:var(--muted);font-size:17px}
.route-list{border-top:1px solid var(--line)}
.route-row{display:grid;grid-template-columns:66px minmax(0,1fr) 160px;gap:22px;align-items:center;padding:24px 0;border-bottom:1px solid var(--line)}
.route-row .num{font-size:13px;color:var(--copper);font-weight:800;letter-spacing:.16em}
.route-row p{margin:5px 0 0;color:var(--muted)}
.route-row a{justify-self:end;color:#fff;font-weight:700}
.route-row a:hover{color:var(--accent)}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,.9fr);gap:52px;align-items:start}
.split-reverse{grid-template-columns:minmax(320px,.9fr) minmax(0,1fr)}
.media-frame{position:sticky;top:102px}
.media-frame img{width:100%;border-radius:20px;aspect-ratio:4/3;object-fit:cover;border:1px solid var(--line)}
.media-frame figcaption{color:var(--muted);font-size:13px;margin-top:10px}
.check-list{display:grid;gap:0;border-top:1px solid var(--line)}
.check-item{display:grid;grid-template-columns:42px minmax(0,1fr);gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}
.check-icon{width:34px;height:34px;border:1px solid #584147;border-radius:50%;display:grid;place-items:center;color:#F2A8B0;background:#2A1C20;font-size:13px;font-weight:800}
.check-item p{color:var(--muted);margin:5px 0 0}
.intent-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.intent-card{padding:22px;border:1px solid var(--line);border-radius:16px;background:#1C1C20}
.intent-card small{color:var(--copper);font-weight:800}
.intent-card p{color:var(--muted);margin-bottom:16px}
.intent-card a{color:#fff;font-weight:700}
.intent-card a:hover{color:var(--accent)}
.app-band{display:grid;grid-template-columns:1fr 420px;gap:46px;align-items:center;padding:34px;border-radius:22px;border:1px solid #47363A;background:linear-gradient(135deg,#20191C 0%,#1C1C20 66%,#222226 100%)}
.app-band img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:16px;border:1px solid #3B3336}
.step-list{counter-reset:steps;display:grid;gap:16px;margin-top:26px}
.step{display:grid;grid-template-columns:48px minmax(0,1fr);gap:16px;padding:18px;border:1px solid var(--line);border-radius:14px;background:#1C1C20}
.step b{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:#3A2328;color:#F5C7CD}
.step p{color:var(--muted);margin-bottom:0}
.link-index{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.link-index a{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:20px;background:#1C1C20}
.link-index a:hover{background:#25252A}
.link-index strong{display:block}
.link-index span{display:block;color:var(--muted);font-size:14px;margin-top:3px}
.link-index b{color:var(--accent)}
.timeline{position:relative;margin-top:30px;padding-left:34px}
.timeline:before{content:"";position:absolute;left:8px;top:8px;bottom:8px;width:1px;background:#49494F}
.timeline-item{position:relative;padding:0 0 28px}
.timeline-item:before{content:"";position:absolute;left:-30px;top:7px;width:9px;height:9px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 5px #2A1F22}
.timeline-item p{color:var(--muted);margin-bottom:0}
.note-box{padding:18px 20px;border:1px solid #55483B;border-radius:14px;background:#241F1A;color:#D8C7B8}
.note-box strong{color:#F4DFCB}
.kicker{display:inline-flex;align-items:center;gap:8px;color:#D7CBCF;background:#232327;border:1px solid #38383D;padding:7px 10px;border-radius:999px;font-size:13px;margin-bottom:18px}
.kicker:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent)}
.page-hero{padding:46px 0 28px;border-bottom:1px solid var(--line-soft);background:#151517}
.page-hero .wrap{max-width:1040px}
.page-hero h1{font-size:clamp(34px,4vw,54px);max-width:860px}
.page-hero .lede{max-width:780px}
.breadcrumbs{font-size:13px;color:var(--muted);margin-bottom:20px}
.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:0}
.breadcrumbs li:not(:last-child):after{content:"/";margin-left:8px;color:#67616A}
.breadcrumbs a:hover{color:#fff}
.prose{max-width:760px}
.prose p{color:#CFC9CB}
.prose ul,.prose ol{padding-left:1.25rem;color:#CFC9CB}
.prose li{margin-bottom:8px}
.prose strong{color:#fff}
.info-pairs{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:24px}
.info-pair{border:1px solid var(--line);border-radius:14px;padding:18px;background:#1D1D21}
.info-pair p{color:var(--muted);margin-bottom:0}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:52px;align-items:start}
.side-index{position:sticky;top:102px;border-left:1px solid var(--line);padding-left:20px}
.side-index h2{font-size:15px;letter-spacing:.04em;margin-bottom:12px}
.side-index a{display:block;color:var(--muted);padding:7px 0;font-size:14px}
.side-index a:hover{color:#fff}
.feature-list{display:grid;gap:18px;margin-top:24px}
.feature-row{padding:0 0 18px;border-bottom:1px solid var(--line)}
.feature-row p{color:var(--muted);margin-bottom:0}
.issue-table{border:1px solid var(--line);border-radius:16px;overflow:hidden}
.issue-row{display:grid;grid-template-columns:210px 1fr;background:#1D1D21}
.issue-row + .issue-row{border-top:1px solid var(--line)}
.issue-title{padding:20px;background:#19191C;border-right:1px solid var(--line);font-weight:800}
.issue-checks{padding:18px 22px}
.issue-checks ol{margin:0;padding-left:20px;color:#CFC9CB}
.issue-checks li{margin:5px 0}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-question{width:100%;display:flex;justify-content:space-between;gap:30px;align-items:center;padding:20px 0;background:transparent;border:0;color:#fff;text-align:left;font-weight:800}
.faq-question span:last-child{color:var(--accent);font-size:22px;font-weight:400}
.faq-answer{padding:0 44px 20px 0;color:var(--muted)}
.faq-answer p{margin:0}
.faq-answer[hidden]{display:none}
.safety-list{display:grid;gap:14px}
.safety-item{display:grid;grid-template-columns:110px minmax(0,1fr);gap:20px;padding:18px 0;border-top:1px solid var(--line)}
.safety-item .level{color:var(--accent);font-size:13px;font-weight:800}
.safety-item p{color:var(--muted);margin-bottom:0}
.form-note{max-width:720px;padding:22px;border:1px solid var(--line);border-radius:16px;background:#1D1D21}
.form-note p{color:var(--muted);margin-bottom:0}
.contact-channels{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.contact-card{padding:22px;border:1px solid var(--line);border-radius:16px;background:#1D1D21}
.contact-card p{color:var(--muted);margin-bottom:0}
.search-results{display:grid;gap:12px}
.search-result{display:block;padding:20px;border:1px solid var(--line);border-radius:14px;background:#1C1C20}
.search-result:hover{border-color:#55515A;background:#212126}
.search-result h2{font-size:21px;margin-bottom:7px}
.search-result p{color:var(--muted);margin-bottom:8px}
.search-result small{color:var(--accent)}
.empty-state{padding:28px;border:1px dashed #4B4B51;border-radius:16px;color:var(--muted)}
.related-list{border-top:1px solid var(--line)}
.related-row{display:flex;justify-content:space-between;gap:24px;align-items:center;padding:17px 0;border-bottom:1px solid var(--line)}
.related-row small{display:block;color:var(--muted);margin-top:3px}
.related-row b{color:var(--accent)}
.section-related{padding-top:48px;padding-bottom:54px}
.site-footer{background:#111113;border-top:1px solid #26262B;padding:48px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:44px}
.footer-brand{font-size:24px;font-weight:800}
.footer-about p{max-width:360px;color:var(--muted);font-size:14px;margin-top:12px}
.footer-grid h2{font-size:14px;margin-bottom:14px;color:#E5DFE1}
.footer-grid>div:not(.footer-about) a{display:block;color:var(--muted);font-size:14px;padding:4px 0}
.footer-grid a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;align-items:center;border-top:1px solid #27272C;margin-top:34px;padding-top:20px;color:#777177;font-size:13px}
.footer-bottom p{margin:0}
.search-modal[hidden]{display:none !important}
.search-modal{position:fixed;inset:0;z-index:999;display:grid;place-items:start center;padding:11vh 20px 30px}
.search-backdrop{position:absolute;inset:0;background:rgba(5,5,6,.78);backdrop-filter:blur(8px)}
.search-panel{position:relative;z-index:1;width:min(680px,100%);padding:30px;border-radius:20px;background:#1D1D21;border:1px solid #3C3C42;box-shadow:var(--shadow)}
.search-panel h2{font-size:28px}
.search-panel>p:not(.eyebrow){color:var(--muted)}
.search-close{position:absolute;right:20px;top:18px;border:0;background:transparent;color:var(--muted)}
.search-form label{display:block;font-size:13px;color:#D0C9CB;margin-bottom:8px}
.search-line{display:grid;grid-template-columns:1fr auto;gap:10px}
.search-line input{min-width:0;border:1px solid #45454D;background:#141416;color:#fff;border-radius:11px;padding:11px 13px;outline:none}
.search-line input:focus{border-color:var(--brand)}
.search-line button{border:0;border-radius:11px;background:var(--brand);color:#fff;padding:10px 18px;font-weight:800}
.back-top{position:fixed;right:22px;bottom:22px;z-index:20;border:1px solid #44444A;background:#202024;color:#fff;border-radius:999px;padding:9px 13px;box-shadow:0 10px 35px rgba(0,0,0,.25)}
.back-top[hidden]{display:none}
.code-like{display:block;background:#111113;border:1px solid var(--line);padding:12px 14px;border-radius:10px;color:#E9D5D8;overflow-wrap:anywhere;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:14px}
.label-row{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 0}
.label{display:inline-flex;border:1px solid #494047;background:#241E21;color:#D9BEC3;padding:5px 9px;border-radius:999px;font-size:12px}
.two-col-text{columns:2;column-gap:46px}
.two-col-text p{break-inside:avoid;color:#CFC9CB}
.stateless-list{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}
.stateless-list li{padding:14px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:120px 1fr;gap:20px}
.stateless-list b{color:#fff}
.stateless-list span{color:var(--muted)}
@media (max-width:1024px){
  .header-inner{gap:16px}.brand{min-width:auto}.brand small{display:none}.site-nav a{padding:8px 8px}
  .hero-grid,.split,.split-reverse,.app-band,.article-grid{grid-template-columns:1fr}
  .hero-visual{max-width:760px}.media-frame,.side-index{position:static}.app-band img{max-height:380px}
  .intent-grid,.contact-channels{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}.footer-grid>div:last-child{grid-column:2/4}
}
@media (max-width:768px){
  .wrap,.narrow{width:min(100% - 28px,var(--max))}.header-inner{min-height:66px}.brand img{width:40px;height:40px}.brand b{font-size:18px}
  .menu-toggle{display:inline-flex;margin-left:auto}.search-open{padding:8px 10px}.site-nav{display:none;position:absolute;top:66px;left:0;right:0;margin:0;padding:12px 14px 18px;background:#151517;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch}.site-nav.is-open{display:flex}.site-nav a{padding:11px 12px}
  .hero{padding:42px 0 28px}.hero-grid{gap:30px}h1{font-size:39px}.lede{font-size:17px}.hero-visual img{aspect-ratio:16/11}
  .section{padding:50px 0}.route-row{grid-template-columns:48px 1fr}.route-row a{grid-column:2;justify-self:start}.intent-grid,.contact-channels,.info-pairs{grid-template-columns:1fr}.link-index{grid-template-columns:1fr}.app-band{padding:22px}.issue-row{grid-template-columns:1fr}.issue-title{border-right:0;border-bottom:1px solid var(--line)}.footer-grid{grid-template-columns:1fr 1fr}.footer-about{grid-column:1/-1}.footer-grid>div:last-child{grid-column:auto}.two-col-text{columns:1}
}
@media (max-width:600px){
  body{font-size:15px}.header-inner{gap:10px}.brand span small{display:none}.brand{gap:8px}.brand img{width:38px;height:38px}.search-open{font-size:13px}.menu-toggle{font-size:13px}
  .hero-actions{display:grid}.btn{width:100%}.hero-caption{position:static;margin-top:10px}.route-row{grid-template-columns:1fr;gap:7px}.route-row a{grid-column:1}.route-row .num{font-size:11px}
  .app-band{display:block}.app-band img{margin-top:22px}.safety-item{grid-template-columns:1fr;gap:6px}.stateless-list li{grid-template-columns:1fr;gap:4px}.footer-grid{grid-template-columns:1fr}.footer-about,.footer-grid>div:last-child{grid-column:auto}.footer-bottom{align-items:flex-start;flex-direction:column}
  .search-panel{padding:24px 20px}.search-line{grid-template-columns:1fr}.search-line button{width:100%}.page-hero{padding-top:32px}.page-hero h1{font-size:34px}
}
@media (max-width:375px){
  .wrap,.narrow{width:calc(100% - 22px)}.brand b{font-size:16px}.brand img{width:35px;height:35px}.menu-toggle,.search-open{padding:7px 8px}.header-inner{gap:7px}h1{font-size:31px}h2{font-size:25px}.hero{padding-top:32px}.section{padding:42px 0}.app-band{padding:18px}
}