:root{
    --brand:#C84A5A;
    --brand-soft:#D08A48;
    --ink:#F1EEEE;
    --muted:#A9A3A6;
    --deep:#121214;
    --bg:#17171A;
    --panel:#222226;
    --panel-2:#2A292D;
    --accent:#E59A3A;
    --line:rgba(241,238,238,.11);
    --shadow:0 26px 70px rgba(0,0,0,.28);
    --radius:22px;
    --shell:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
a:hover{color:#fff}
button,input{font:inherit}
button{cursor:pointer}
.shell{width:min(calc(100% - 40px),var(--shell));margin-inline:auto}
.narrow-shell{max-width:850px}
.skip-link{position:fixed;left:16px;top:-100px;z-index:9999;background:#fff;color:#111;padding:10px 14px;border-radius:8px}.skip-link:focus{top:16px}
.site-header{position:sticky;top:0;z-index:90;background:rgba(18,18,20,.9);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.header-row{min-height:76px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:12px;min-width:max-content}.brand img{width:46px;height:46px;object-fit:cover;border-radius:14px}.brand-copy{display:flex;flex-direction:column;line-height:1.1}.brand-copy strong{font-size:19px}.brand-copy small{color:var(--muted);font-size:11px;margin-top:5px;letter-spacing:.08em}
.site-nav{display:flex;align-items:center;gap:6px;margin-left:auto}.site-nav a{padding:9px 11px;border-radius:10px;color:#cbc6c8;font-size:14px}.site-nav a:hover,.site-nav a.is-active{background:var(--panel);color:#fff}
.search-open,.menu-toggle{border:1px solid var(--line);background:transparent;color:var(--ink);border-radius:12px;padding:9px 13px}.menu-toggle{display:none}
.search-modal[hidden]{display:none!important}.search-modal{position:fixed;inset:0;z-index:200;display:grid;place-items:start center;padding-top:12vh}.search-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.72)}.search-panel{position:relative;width:min(640px,calc(100% - 32px));background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:34px;box-shadow:var(--shadow)}.search-close{position:absolute;right:18px;top:15px;width:40px;height:40px;border:0;border-radius:50%;background:#19191b;color:#fff;font-size:24px}.search-panel h2{margin:.1em 0 .7em;font-size:30px}.search-form label{display:block;color:var(--muted);font-size:14px;margin-bottom:8px}.search-line{display:flex;gap:10px}.search-line input{flex:1;min-width:0;background:#151517;color:#fff;border:1px solid var(--line);border-radius:12px;padding:13px 14px}.search-line button{border:0;background:var(--accent);color:#171717;border-radius:12px;padding:0 18px;font-weight:700}
.eyebrow{margin:0 0 8px;color:#e2a25f;font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase}.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:13px;font-weight:750}.button.primary{background:var(--brand);color:#fff}.button.secondary{background:var(--accent);color:#181818}.button.text{border:1px solid var(--line);background:transparent}.text-link{color:#efb072;font-weight:700}.muted{color:var(--muted)}
.home-lead{padding:78px 0 50px;background:radial-gradient(circle at 80% 10%,rgba(200,74,90,.18),transparent 38%),linear-gradient(180deg,#151517,var(--bg))}.home-lead-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}.lead-copy h1{font-size:clamp(38px,5.2vw,70px);line-height:1.07;letter-spacing:-.045em;margin:.2em 0 .35em;max-width:760px}.lead-intro{font-size:19px;color:#c9c3c5;max-width:690px}.lead-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0}.lead-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden;margin:30px 0 0}.lead-facts div{background:#19191c;padding:18px}.lead-facts dt{color:var(--muted);font-size:12px}.lead-facts dd{margin:5px 0 0;font-weight:700;font-size:14px}.lead-visual{margin:0;position:relative}.lead-visual img{width:100%;aspect-ratio:1.08/1;object-fit:cover;border-radius:30px;box-shadow:var(--shadow);border:1px solid var(--line)}.lead-visual figcaption{position:absolute;left:18px;right:18px;bottom:18px;background:rgba(18,18,20,.86);border:1px solid var(--line);padding:12px 14px;border-radius:14px;color:#d8d3d5;font-size:13px}
.route-strip{border-block:1px solid var(--line);background:#1b1b1f}.route-strip-inner{display:flex;align-items:center;gap:13px;min-height:58px;font-size:13px;color:#bfb9bc;overflow:auto;white-space:nowrap}.route-strip strong{color:#fff}.route-strip i{color:#695f63;font-style:normal}
.section{padding-block:84px}.section-heading{max-width:800px;margin-bottom:34px}.section-heading.narrow{max-width:680px}.section-heading h2,.feature-copy h2,.visual-note h2,.app-band h2,.two-col-text h2,.closing-index h2{font-size:clamp(30px,4vw,48px);line-height:1.15;letter-spacing:-.025em;margin:.15em 0 .35em}.section-heading p:not(.eyebrow),.feature-copy p,.visual-note p,.app-band p,.two-col-text p,.closing-index p{color:#bdb7ba}.editorial-list{border-top:1px solid var(--line)}.editorial-row{display:grid;grid-template-columns:70px 1fr 260px;gap:24px;align-items:center;padding:28px 0;border-bottom:1px solid var(--line)}.row-index{font-size:14px;color:#6f696c}.editorial-row h3{font-size:26px;margin:2px 0 8px}.editorial-row p{margin:0;color:#aaa4a7}.editorial-row>a{color:#efb072;font-weight:700;text-align:right}
.split-feature{display:grid;grid-template-columns:.92fr 1.08fr;gap:60px;align-items:center}.split-feature.reverse{grid-template-columns:1.08fr .92fr}.feature-image img{width:100%;border-radius:26px;border:1px solid var(--line);object-fit:cover;max-height:560px}.feature-image.tall img{max-height:650px}.feature-copy .check-list{margin:26px 0}.check-list{padding:0;list-style:none;display:grid;gap:10px}.check-list li{position:relative;padding-left:26px;color:#d7d1d3}.check-list li:before{content:"";position:absolute;left:0;top:.75em;width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 5px rgba(229,154,58,.11)}
.app-band{background:#202024;border-block:1px solid var(--line)}.app-band-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:70px;align-items:center}.image-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px}.image-pair img{width:100%;height:390px;object-fit:cover;border-radius:24px;border:1px solid var(--line)}.image-pair img:nth-child(2){margin-top:38px}
.question-grid{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:24px;overflow:hidden}.question-grid article{padding:28px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#1b1b1e}.question-grid article:nth-child(2n){border-right:0}.question-grid article:nth-last-child(-n+2){border-bottom:0}.question-grid h3{font-size:23px;margin:0 0 9px}.question-grid p{color:#aaa4a7}.question-grid a{color:#efb072;font-weight:700}
.visual-note{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:center}.visual-note img{width:100%;border-radius:28px;max-height:440px;object-fit:cover;border:1px solid var(--line)}
.info-columns{display:grid;grid-template-columns:1fr 1fr;gap:48px;border-top:1px solid var(--line)}.info-columns h2{font-size:33px;line-height:1.2;margin:.2em 0}.info-columns p{color:#b9b3b6}.note-card{background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:18px}.note-card img{border-radius:15px;margin-bottom:16px;width:100%;height:240px;object-fit:cover}.note-card p{margin:0}
.faq-list{display:grid;gap:10px}.faq-list details{background:#1d1d20;border:1px solid var(--line);border-radius:16px;padding:0 18px}.faq-list summary{cursor:pointer;font-weight:750;padding:17px 28px 17px 0;position:relative}.faq-list summary:after{content:"+";position:absolute;right:0;color:var(--accent)}.faq-list details[open] summary:after{content:"−"}.faq-list details p{color:#bcb6b9;margin:0 0 18px}.compact{max-width:850px}.center{text-align:center;margin-top:24px}.closing-index{display:grid;grid-template-columns:440px 1fr;gap:48px;align-items:center;background:var(--panel);padding-inline:30px;border-radius:28px;margin-bottom:84px}.closing-index img{border-radius:18px}.inline-links{display:flex;flex-wrap:wrap;gap:16px}.inline-links a{color:#efb072;font-weight:700}
.page-hero,.app-hero,.guide-hero{padding:64px 0;border-bottom:1px solid var(--line);background:#151517}.page-hero-grid,.app-hero-grid,.guide-hero-grid,.simple-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}.page-hero h1,.app-hero h1,.guide-hero h1{font-size:clamp(36px,5vw,61px);line-height:1.08;letter-spacing:-.035em;margin:.2em 0 .35em}.page-hero p,.app-hero p,.guide-hero p{color:#c1bbbe;font-size:18px}.page-hero img,.guide-hero img{border-radius:24px;border:1px solid var(--line);max-height:430px;width:100%;object-fit:cover}.compact-hero{background:radial-gradient(circle at 75% 0,rgba(200,74,90,.15),transparent 38%),#151517}.warm-hero{background:radial-gradient(circle at 80% 5%,rgba(208,138,72,.16),transparent 38%),#151517}.risk-hero{background:radial-gradient(circle at 75% 0,rgba(229,154,58,.14),transparent 38%),#151517}.contact-hero{background:radial-gradient(circle at 80% 0,rgba(200,74,90,.11),transparent 38%),#151517}.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;color:#827c80;font-size:13px;margin-bottom:24px}.breadcrumb a{color:#bcb5b9}.breadcrumb a:hover{color:#fff}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:58px;align-items:start}.article-body{font-size:17px}.article-body h2{font-size:32px;line-height:1.2;margin:2em 0 .55em}.article-body h3{font-size:22px;margin:1.6em 0 .4em}.article-body p{color:#c0babe}.article-body a{color:#efb072;text-decoration:underline;text-underline-offset:3px}.stack-list{display:grid;gap:16px;margin:24px 0}.stack-list section{background:var(--panel);border:1px solid var(--line);padding:22px;border-radius:18px}.stack-list h3{margin:0 0 8px}.stack-list p{margin:0}.article-callout{margin:36px 0 0;background:#232124;border-left:3px solid var(--accent);padding:20px 22px;border-radius:0 16px 16px 0}.article-callout h3{margin:0 0 8px}.article-callout p{margin:0}.sticky-card{position:sticky;top:110px;background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:24px}.sticky-card h2{margin:.15em 0 .7em}.sticky-card dl{margin:0 0 22px}.sticky-card dl div{padding:12px 0;border-bottom:1px solid var(--line)}.sticky-card dt{font-size:12px;color:var(--muted)}.sticky-card dd{margin:4px 0 0;font-weight:700;overflow-wrap:anywhere}.accent-card{border-top:4px solid var(--accent)}.accent-card ol{padding-left:20px;color:#cfc9cb}.long-list{display:grid;gap:12px;padding-left:22px;color:#c1bbbe}.long-list li::marker{color:var(--accent)}
.app-hero{background:radial-gradient(circle at 72% 20%,rgba(229,154,58,.15),transparent 35%),#151517}.device-visual{margin:0;text-align:center}.device-visual img{width:min(420px,100%);margin:auto;border-radius:30px;border:1px solid var(--line);box-shadow:var(--shadow)}.device-visual figcaption{color:var(--muted);font-size:13px;margin-top:12px}.step-list{border-top:1px solid var(--line)}.step-list article{display:grid;grid-template-columns:90px 1fr;gap:25px;padding:26px 0;border-bottom:1px solid var(--line)}.step-list>article>span{font-size:28px;color:#71696d;font-weight:800}.step-list h3{font-size:25px;margin:0 0 7px}.step-list p{margin:0;color:#aca6a9}.dark-panel{background:var(--deep);border-block:1px solid var(--line)}.two-col-text{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:start}
.guide-hero{background:radial-gradient(circle at 76% 10%,rgba(208,138,72,.14),transparent 35%),#151517}.guide-index ol{margin:0;padding:0;list-style:none;border:1px solid var(--line);border-radius:22px;overflow:hidden}.guide-index li+li{border-top:1px solid var(--line)}.guide-index a{display:flex;gap:18px;align-items:center;padding:17px 20px;background:#1c1c1f}.guide-index a:hover{background:#232327}.guide-index span{color:#7a7276;font-weight:800}.wide-article{max-width:860px}.guide-chapter{scroll-margin-top:110px;padding:24px 0 8px;border-top:1px solid var(--line)}.guide-chapter:first-child{border-top:0}
.simple-hero{padding:58px 0;border-bottom:1px solid var(--line);background:#151517}.simple-hero h1{font-size:clamp(38px,5vw,58px);line-height:1.1;margin:.15em 0 .3em}.simple-hero p{color:#bdb7ba;font-size:18px}.simple-hero img{border-radius:24px;border:1px solid var(--line);width:100%;max-height:360px;object-fit:cover}.faq-page{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:45px;align-items:start}.faq-links{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:22px}.faq-links h2{font-size:22px;margin:0 0 15px}.faq-links a{display:flex;flex-direction:column;padding:14px 0;border-top:1px solid var(--line)}.faq-links a span{color:var(--muted);font-size:13px}.safety-matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:30px}.safety-matrix div{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:18px}.safety-matrix strong{display:block;margin-bottom:8px}.safety-matrix span{color:var(--muted);font-size:14px}
.contact-grid{display:grid;grid-template-columns:1fr 360px;gap:50px}.contact-grid article h2{font-size:31px}.contact-card{background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:26px;height:max-content}.contact-card h2{font-size:28px;margin:.2em 0}.contact-card a{display:block;color:#efb072;font-weight:700;margin:8px 0}.contact-card hr{border:0;border-top:1px solid var(--line);margin:24px 0}
.search-page-head{padding:58px 0 28px;border-bottom:1px solid var(--line);background:#151517}.search-page-head h1{font-size:46px;line-height:1.15;margin:.15em 0 .5em}.page-search{margin-top:28px}.result-count{color:var(--muted)}.search-results{display:grid;gap:12px}.search-results article{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:22px}.search-results h2{margin:0 0 8px;font-size:24px}.search-results p{color:#b8b2b5}.empty-state{padding:50px 0;text-align:center}.empty-state h2{font-size:32px}.empty-state p{color:var(--muted)}.empty-state a{color:#efb072}
.not-found{min-height:65vh;display:grid;place-items:center;padding:80px 0}.not-found-inner{text-align:center;max-width:760px}.status-code{display:block;font-size:110px;line-height:.9;font-weight:900;color:#2f2e32}.not-found h1{font-size:44px;line-height:1.12}.not-found p{color:#aaa4a7}.not-found-links{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:26px}.not-found-links a{border:1px solid var(--line);border-radius:12px;padding:10px 14px}.not-found-links a:hover{background:var(--panel)}
.site-footer{background:#111113;border-top:1px solid var(--line);padding:60px 0 22px}.footer-grid{display:grid;grid-template-columns:1.6fr .7fr .7fr;gap:55px}.footer-grid h2{font-size:28px;line-height:1.2;margin:.2em 0 .5em}.footer-grid h3{font-size:15px;margin:0 0 12px}.footer-grid p{color:#8f888c}.footer-grid section:nth-child(n+2){display:flex;flex-direction:column;align-items:flex-start}.footer-grid a{color:#a9a3a6;margin:5px 0;font-size:14px}.footer-grid a:hover{color:#fff}.footer-bottom{display:flex;justify-content:space-between;gap:25px;margin-top:38px;padding-top:18px;border-top:1px solid var(--line);color:#6f696c;font-size:12px}.back-top{position:fixed;right:20px;bottom:20px;width:44px;height:44px;border:1px solid var(--line);border-radius:50%;background:#232327;color:#fff;opacity:0;transform:translateY(12px);pointer-events:none;transition:.2s}.back-top.is-visible{opacity:1;transform:none;pointer-events:auto}
@media (max-width:1024px){
    .site-nav{position:fixed;left:20px;right:20px;top:84px;display:none;flex-direction:column;align-items:stretch;background:#1b1b1f;border:1px solid var(--line);border-radius:18px;padding:10px;box-shadow:var(--shadow)}.site-nav.is-open{display:flex}.menu-toggle{display:block;margin-left:auto}.search-open{margin-left:0}.header-row{gap:10px}
    .home-lead-grid,.page-hero-grid,.app-hero-grid,.guide-hero-grid,.simple-hero-grid,.split-feature,.split-feature.reverse,.app-band-grid,.visual-note,.article-layout,.faq-page,.contact-grid{grid-template-columns:1fr}.lead-visual{max-width:760px}.editorial-row{grid-template-columns:60px 1fr}.editorial-row>a{grid-column:2;text-align:left}.article-aside{order:-1}.sticky-card{position:static}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}.closing-index{grid-template-columns:320px 1fr}.two-col-text{gap:40px}.safety-matrix{grid-template-columns:1fr}
}
@media (max-width:768px){
    .shell{width:min(calc(100% - 28px),var(--shell))}.section{padding-block:62px}.home-lead{padding-top:48px}.lead-copy h1{font-size:42px}.lead-intro{font-size:17px}.lead-facts{grid-template-columns:1fr}.lead-facts div{padding:14px}.lead-visual img{border-radius:22px}.editorial-row{grid-template-columns:44px 1fr;gap:14px}.editorial-row h3{font-size:22px}.question-grid{grid-template-columns:1fr}.question-grid article{border-right:0}.question-grid article:nth-last-child(-n+2){border-bottom:1px solid var(--line)}.question-grid article:last-child{border-bottom:0}.image-pair img{height:320px}.info-columns,.two-col-text{grid-template-columns:1fr}.closing-index{grid-template-columns:1fr;margin-inline:14px}.closing-index img{width:100%;max-height:320px;object-fit:cover}.page-hero,.app-hero,.guide-hero{padding:45px 0}.page-hero h1,.app-hero h1,.guide-hero h1,.simple-hero h1{font-size:40px}.article-body h2{font-size:28px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid section:first-child{grid-column:1/-1}.footer-bottom{flex-direction:column}.step-list article{grid-template-columns:56px 1fr}.search-page-head h1{font-size:36px}
}
@media (max-width:600px){
    .brand-copy small{display:none}.search-open{font-size:0;padding:9px 12px}.search-open:after{content:"搜";font-size:14px}.header-row{min-height:68px}.site-nav{top:74px}.lead-copy h1{font-size:36px}.lead-actions{flex-direction:column}.lead-actions .button{width:100%}.route-strip-inner{min-height:52px}.section-heading h2,.feature-copy h2,.visual-note h2,.app-band h2,.two-col-text h2,.closing-index h2{font-size:31px}.image-pair{grid-template-columns:1fr 1fr}.image-pair img{height:250px}.image-pair img:nth-child(2){margin-top:20px}.editorial-row{grid-template-columns:1fr}.row-index{display:none}.editorial-row>a{grid-column:1}.page-hero h1,.app-hero h1,.guide-hero h1,.simple-hero h1{font-size:34px}.search-line{flex-direction:column}.search-line button{min-height:44px}.footer-grid{grid-template-columns:1fr}.footer-grid section:first-child{grid-column:auto}.safety-matrix{grid-template-columns:1fr}.not-found h1{font-size:34px}.status-code{font-size:86px}
}
@media (max-width:375px){.shell{width:min(calc(100% - 22px),var(--shell))}.brand img{width:40px;height:40px}.menu-toggle{padding-inline:10px}.lead-copy h1{font-size:32px}.question-grid article{padding:22px}.search-panel{padding:26px 20px}.page-hero h1,.app-hero h1,.guide-hero h1,.simple-hero h1{font-size:31px}}