:root{
    --primary:#6F5AE8;
    --primary-soft:#9A8CF2;
    --ink:#242433;
    --text:#30303A;
    --muted:#70707D;
    --bg:#F8F8FC;
    --panel:#F0EEFA;
    --accent:#F29A4A;
    --white:#FFFFFF;
    --line:#DDD9EF;
    --success:#2E7D62;
    --shadow:0 18px 55px rgba(36,36,51,.10);
    --radius:24px;
    --radius-sm:14px;
    --container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.72;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:var(--primary);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:#5844cf}
button,input{font:inherit}
button{cursor:pointer}
.container{width:min(calc(100% - 40px),var(--container));margin:0 auto}
.narrow-container{width:min(100%,860px)}
.skip-link{position:fixed;left:16px;top:-80px;z-index:1000;background:var(--ink);color:#fff;padding:10px 14px;border-radius:10px}
.skip-link:focus{top:16px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(248,248,252,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(111,90,232,.12)}
.header-inner{min-height:76px;display:flex;align-items:center;gap:22px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);text-decoration:none;min-width:210px}
.brand img{width:46px;height:46px;object-fit:contain;border-radius:12px}
.brand span{display:flex;flex-direction:column;line-height:1.25}
.brand strong{font-size:16px}.brand small{font-size:11px;color:var(--muted);margin-top:4px}
.primary-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.primary-nav a{padding:9px 11px;border-radius:10px;color:var(--text);font-size:14px;text-decoration:none;white-space:nowrap}
.primary-nav a:hover,.primary-nav a[aria-current="page"]{background:var(--panel);color:var(--primary)}
.search-open,.nav-toggle{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:12px;padding:9px 13px}
.nav-toggle{display:none}
.search-modal[hidden]{display:none !important}
.search-modal{position:fixed;inset:0;z-index:100;display:grid;place-items:start center;padding:100px 20px 20px}
.search-backdrop{position:absolute;inset:0;background:rgba(24,24,34,.56)}
.search-panel{position:relative;width:min(100%,720px);background:#fff;border-radius:24px;padding:34px;box-shadow:var(--shadow)}
.search-panel h2{margin:5px 0 18px;font-size:clamp(24px,3vw,34px);line-height:1.25}
.search-close{position:absolute;right:18px;top:18px;border:0;background:var(--panel);padding:8px 12px;border-radius:10px;color:var(--ink)}
.search-form label{display:block;font-size:14px;font-weight:700;color:var(--ink);margin-bottom:8px}
.search-row{display:flex;gap:10px}
.search-row input{flex:1;min-width:0;border:1px solid var(--line);background:#fff;border-radius:13px;padding:13px 14px;color:var(--ink);outline:none}
.search-row input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(111,90,232,.12)}
.hero{padding:70px 0 56px;background:linear-gradient(180deg,#F2F0FF 0%,var(--bg) 100%)}
.hero-grid,.page-hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(360px,.92fr);gap:56px;align-items:center}
.eyebrow{display:inline-block;margin:0 0 10px;color:var(--primary);font-size:13px;font-weight:800;letter-spacing:.06em;text-transform:none}
.hero h1,.page-hero h1,.article-hero h1,.not-found h1{margin:0;color:var(--ink);font-size:clamp(38px,5vw,62px);line-height:1.08;letter-spacing:-.035em}
.page-hero h1{font-size:clamp(34px,4.4vw,52px)}
.hero-lead{font-size:18px;color:#4d4d5a;margin:22px 0 0;max-width:760px;line-height:1.78}
.hero-actions{display:flex;flex-wrap:wrap;gap:11px;margin-top:28px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 18px;border-radius:13px;font-weight:750;text-decoration:none;border:1px solid transparent;transition:.2s ease}
.button:hover{transform:translateY(-1px)}
.button-primary{background:var(--primary);color:#fff}.button-primary:hover{background:#5e49d8;color:#fff}
.button-accent{background:var(--accent);color:#2b2019}.button-accent:hover{background:#ea8b37;color:#2b2019}
.button-ghost{background:#fff;color:var(--ink);border-color:var(--line)}.button-ghost:hover{border-color:var(--primary);color:var(--primary)}
.hero-checks{display:flex;flex-wrap:wrap;gap:8px 18px;margin:26px 0 0;padding:0;list-style:none;color:var(--muted);font-size:13px}
.hero-checks li::before{content:"✓";color:var(--success);font-weight:900;margin-right:7px}
.hero-media{margin:0;padding:16px;background:#fff;border:1px solid var(--line);border-radius:30px;box-shadow:var(--shadow)}
.hero-media img,.page-hero img,.rounded-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;background:var(--panel)}
.hero-media figcaption{font-size:12px;color:var(--muted);padding:10px 4px 0}
.section{padding:76px 0}
.section-muted{background:var(--panel)}
.section-deep{background:var(--ink);color:#ececf3}
.section-heading{margin-bottom:30px}.section-heading.narrow{max-width:780px}.section-heading h2,.split-layout h2,.media-callout h2,.final-cta h2{margin:0;color:var(--ink);font-size:clamp(28px,3.4vw,42px);line-height:1.18;letter-spacing:-.02em}
.section-heading p{margin:12px 0 0;color:var(--muted);font-size:16px}.section-heading.light h2{color:#fff}.section-heading.light p{color:#c8c8d4}
.with-link{display:flex;align-items:end;justify-content:space-between;gap:30px}.with-link>div{max-width:760px}
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.entry-card{overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:0 8px 28px rgba(36,36,51,.06)}
.entry-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#e7e4f4}.entry-card-body{padding:22px}.entry-card h3{margin:0 0 10px;color:var(--ink);font-size:21px;line-height:1.3}.entry-card p{margin:0 0 15px;color:var(--muted)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:750;text-decoration:none}.text-link::after{content:"→"}
.split-layout{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:48px;align-items:start}.split-layout.reverse-on-wide{grid-template-columns:minmax(320px,.9fr) minmax(0,1.1fr)}
.split-layout p{color:var(--muted)}
.note-panel,.side-panel{background:#fff;border:1px solid var(--line);border-radius:22px;padding:26px}.note-panel h3,.side-panel h2{margin:0 0 14px;color:var(--ink);font-size:21px}.note-panel ul,.side-panel ul,.side-panel ol{padding-left:20px;margin:0}.note-panel li,.side-panel li{margin:8px 0}
.accent-panel{border-top:5px solid var(--accent)}
.number-list{padding-left:22px}.number-list li{margin:12px 0}.number-list strong{color:var(--ink)}
.feature-bands{display:grid;gap:14px}.feature-band{display:grid;grid-template-columns:260px 1fr 1.2fr;gap:26px;align-items:start;padding:26px 0;border-top:1px solid rgba(255,255,255,.15)}.feature-band h3,.feature-band h2{margin:0;color:#fff;font-size:22px}.feature-band p{margin:0;color:#c8c8d4}.feature-band ul{margin:0;padding-left:20px;color:#e4e4ec}
.light-bands .feature-band{border-top:1px solid var(--line)}.light-bands .feature-band h2{color:var(--ink)}.light-bands .feature-band p{color:var(--muted)}.light-bands .feature-band ul{color:var(--text)}
.editorial-list{display:grid;gap:0;border-top:1px solid var(--line)}.editorial-item{padding:22px 0;border-bottom:1px solid var(--line)}.editorial-item h3{margin:1px 0 7px;font-size:22px;line-height:1.3}.editorial-item h3 a{color:var(--ink);text-decoration:none}.editorial-item h3 a:hover{color:var(--primary)}.editorial-item p{margin:0 0 10px;color:var(--muted);max-width:850px}
.media-callout{display:grid;grid-template-columns:minmax(360px,.92fr) minmax(0,1.08fr);gap:48px;align-items:center}.media-callout figure{margin:0}.media-callout figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:24px;background:#e7e4f4}.media-callout p{color:var(--muted)}
.link-stack{display:grid;gap:10px;margin-top:18px}.link-stack a{background:#fff;border:1px solid var(--line);border-radius:12px;padding:11px 13px;text-decoration:none;font-weight:700}.link-stack a:hover{border-color:var(--primary)}
.rounded-media{margin:0}.rounded-media img{box-shadow:var(--shadow)}
.faq-list{display:grid;gap:12px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}.faq-item summary{cursor:pointer;list-style:none;padding:18px 52px 18px 20px;font-weight:800;color:var(--ink);position:relative}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary::after{content:"+";position:absolute;right:20px;top:15px;color:var(--primary);font-size:22px}.faq-item[open] summary::after{content:"–"}.faq-answer{padding:0 20px 18px;color:var(--muted)}.faq-answer p{margin:0}
.section-action{margin-top:24px}.final-cta{padding-top:44px}.final-cta-inner{display:flex;justify-content:space-between;gap:30px;align-items:center;padding:34px;background:#fff;border:1px solid var(--line);border-radius:26px}.final-cta-inner>div:first-child{max-width:700px}.final-cta p{margin:10px 0 0;color:var(--muted)}
.breadcrumb{background:var(--bg);border-bottom:1px solid rgba(111,90,232,.10)}.breadcrumb ol{width:min(calc(100% - 40px),var(--container));margin:0 auto;padding:12px 0;display:flex;gap:8px;list-style:none;font-size:13px;color:var(--muted);overflow:auto;white-space:nowrap}.breadcrumb li:not(:last-child)::after{content:"/";margin-left:8px;color:#aaa4bd}.breadcrumb a{text-decoration:none;color:var(--muted)}
.page-hero{padding:58px 0;background:linear-gradient(180deg,#F0EEFA 0%,#F8F8FC 100%)}.compact-hero{padding:50px 0}.page-hero .status-note{margin-top:24px;background:#fff;border-left:4px solid var(--accent);padding:14px 16px;border-radius:0 12px 12px 0;color:#5f5145}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:46px;align-items:start}.prose{font-size:16px}.prose h2{color:var(--ink);font-size:28px;line-height:1.26;margin:38px 0 13px}.prose h2:first-child{margin-top:0}.prose p{margin:0 0 18px;color:#4a4a56}.prose ul,.prose ol{padding-left:24px}.prose li{margin:10px 0}.prose strong{color:var(--ink)}
.platform-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.platform-grid article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.platform-grid h3,.platform-grid h2{margin:0 0 10px;color:var(--ink);font-size:20px}.platform-grid p{margin:0;color:var(--muted)}.large-grid{grid-template-columns:repeat(2,1fr)}
.guide-index{display:grid;grid-template-columns:320px minmax(0,1fr);gap:40px;align-items:start}.topic-index{position:sticky;top:96px;background:var(--panel);border-radius:20px;padding:20px}.topic-index h2{margin:0 0 12px;font-size:20px;color:var(--ink)}.topic-index a{display:flex;flex-direction:column;gap:3px;padding:12px 0;border-top:1px solid var(--line);text-decoration:none}.topic-index strong{color:var(--ink)}.topic-index span{font-size:13px;color:var(--muted)}
.article-hero{padding:58px 0 28px}.article-title-wrap{max-width:900px}.article-section{padding-top:26px}.article-image{margin:0 0 30px}.article-image img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:22px;background:var(--panel)}.longform{font-size:17px}.article-next{margin-top:34px;padding:24px;background:var(--panel);border-radius:18px}.sticky-panel{position:sticky;top:98px}.link-list{list-style:none;padding:0!important}.link-list li{margin:0!important;border-top:1px solid var(--line)}.link-list li:first-child{border-top:0}.link-list a{display:block;padding:10px 0;text-decoration:none;font-weight:700}
.troubleshooting-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.trouble-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px}.trouble-card h2{margin:0 0 14px;color:var(--ink);font-size:22px}.trouble-card ol{padding-left:22px;margin:0}.trouble-card li{margin:10px 0}
.privacy-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.privacy-grid article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px}.privacy-grid h2{margin:0 0 10px;color:var(--ink);font-size:21px}.privacy-grid p{margin:0;color:var(--muted)}
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.contact-grid article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px}.contact-grid h2{margin:8px 0 8px;color:var(--ink);font-size:22px}.contact-grid p{margin:0;color:var(--muted)}.step-number{font-weight:900;color:var(--primary);font-size:13px}
.page-search{max-width:760px;margin-top:24px}.search-results{display:grid;gap:12px}.search-results article{background:#fff;border:1px solid var(--line);border-radius:17px;padding:20px}.search-results h3{margin:0 0 7px;font-size:21px}.search-results h3 a{color:var(--ink);text-decoration:none}.search-results p{margin:0;color:var(--muted)}
.empty-state{padding:36px;background:#fff;border:1px solid var(--line);border-radius:22px;text-align:center}.empty-state h2{margin:0 0 8px;color:var(--ink)}.empty-state p{color:var(--muted)}.empty-state .hero-actions{justify-content:center}
.not-found{padding:90px 0}.not-found-inner{text-align:center;max-width:820px}.error-code{margin:0;color:var(--primary);font-size:86px;font-weight:900;line-height:1}.not-found h1{font-size:44px;margin-top:12px}.not-found-inner>p:not(.error-code){color:var(--muted);font-size:18px}.not-found .hero-actions{justify-content:center}.center-links{max-width:560px;margin:30px auto 0}
.site-footer{background:var(--ink);color:#d6d6df;padding:56px 0 24px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:36px}.site-footer h2{margin:0 0 13px;color:#fff;font-size:18px}.site-footer p{color:#b9b9c6}.site-footer ul{list-style:none;padding:0;margin:0}.site-footer li{margin:8px 0}.site-footer a{color:#d7d4ff;text-decoration:none}.site-footer a:hover{color:#fff}.footer-bottom{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;gap:20px;align-items:center;justify-content:space-between}.footer-bottom p{margin:0;font-size:13px}.back-top{border:1px solid rgba(255,255,255,.18);background:transparent;color:#fff;border-radius:10px;padding:8px 11px}
@media (max-width:1100px){.primary-nav{gap:1px}.primary-nav a{padding:8px 7px;font-size:13px}.header-inner{gap:12px}.hero-grid,.page-hero-grid{grid-template-columns:1fr 420px;gap:34px}.feature-band{grid-template-columns:220px 1fr}.feature-band ul{grid-column:2}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}.footer-grid section:last-child{grid-column:2/4}}
@media (max-width:900px){.nav-toggle{display:inline-flex;margin-left:auto}.primary-nav{position:absolute;left:20px;right:20px;top:70px;display:none;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);padding:10px;border-radius:16px;box-shadow:var(--shadow)}.primary-nav.is-open{display:flex}.primary-nav a{padding:11px 12px}.search-open{margin-left:0}.hero-grid,.page-hero-grid,.split-layout,.split-layout.reverse-on-wide,.media-callout,.article-layout,.guide-index{grid-template-columns:1fr}.hero-media,.page-hero img{max-width:680px}.entry-grid{grid-template-columns:1fr 1fr}.platform-grid,.privacy-grid{grid-template-columns:1fr 1fr}.topic-index,.sticky-panel{position:static}.feature-band{grid-template-columns:1fr 1fr}.feature-band ul{grid-column:1/3}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid section:last-child{grid-column:auto}.final-cta-inner{align-items:flex-start;flex-direction:column}}
@media (max-width:700px){.container{width:min(calc(100% - 28px),var(--container))}.brand{min-width:0}.brand small{display:none}.brand strong{font-size:14px}.brand img{width:40px;height:40px}.header-inner{min-height:66px}.search-open{padding:8px 10px}.hero,.page-hero{padding:42px 0}.hero h1,.page-hero h1{font-size:36px}.hero-lead{font-size:16px}.section{padding:56px 0}.entry-grid,.platform-grid,.privacy-grid,.contact-grid,.troubleshooting-list,.footer-grid{grid-template-columns:1fr}.feature-band{grid-template-columns:1fr;padding:22px 0}.feature-band ul{grid-column:auto}.with-link{display:block}.with-link .text-link{margin-top:14px}.search-row{flex-direction:column}.search-panel{padding:28px 18px 20px}.section-heading h2,.split-layout h2,.media-callout h2,.final-cta h2{font-size:30px}.article-layout{gap:26px}.prose h2{font-size:24px}.large-grid{grid-template-columns:1fr}.footer-bottom{align-items:flex-start;flex-direction:column}.not-found h1{font-size:36px}.error-code{font-size:68px}}
@media (max-width:420px){.container{width:min(calc(100% - 22px),var(--container))}.hero-actions .button{width:100%}.nav-toggle{padding:8px 9px}.search-open{font-size:0}.search-open::after{content:"搜";font-size:14px}.brand span{max-width:132px}.brand strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.hero h1,.page-hero h1{font-size:32px}.hero-media{padding:10px}.section{padding:48px 0}.entry-card-body,.note-panel,.side-panel,.trouble-card,.privacy-grid article,.contact-grid article{padding:18px}}

.question-index{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.question-index a{display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;text-decoration:none;color:var(--ink);font-weight:800}.question-index a:hover{border-color:var(--primary);color:var(--primary)}.question-index span{font-size:13px;color:var(--muted);font-weight:600}@media (max-width:700px){.question-index{grid-template-columns:1fr}}