:root{--brand:#5B4BDB;--brand-soft:#8B7CF6;--ink:#1E1B2E;--text:#292734;--muted:#6F6B7A;--bg:#F7F7FB;--bg2:#EFEFFC;--accent:#F05A7E;--white:#fff;--border:#deddee;--shadow:0 18px 50px rgba(30,27,46,.08);--radius:22px;--shell:min(1180px,calc(100% - 40px))}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.72}img{max-width:100%;height:auto;display:block}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}.shell{width:var(--shell);margin-inline:auto}.skip-link{position:absolute;left:-9999px;top:8px;background:var(--ink);color:#fff;padding:10px 14px;border-radius:8px;z-index:999}.skip-link:focus{left:8px}.site-header{position:sticky;top:0;z-index:30;background:rgba(247,247,251,.94);backdrop-filter:blur(12px);border-bottom:1px solid 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var(--border);border-radius:14px;padding:16px 18px}.faq-list summary{cursor:pointer;font-weight:800;color:var(--ink)}.faq-list p{color:var(--muted)}.faq-list.large{max-width:900px}.site-footer{margin-top:70px;background:#211f31;color:#ddd9e8;padding:44px 0 20px}.footer-grid{display:grid;grid-template-columns:1fr auto;gap:30px}.footer-grid nav{display:grid;grid-template-columns:repeat(2,minmax(120px,1fr));gap:10px}.footer-grid a{color:#ddd9e8}.footer-bottom{margin-top:30px;padding-top:20px;border-top:1px solid #3a364d;color:#9994a8;font-size:.88rem}.breadcrumbs{padding-top:24px}.breadcrumbs ol{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:.88rem}.breadcrumbs li:not(:last-child)::after{content:'›';margin-left:8px;color:#aaa6b8}.page-layout{padding-bottom:20px}.page-hero{padding:48px 0 40px}.page-hero.compact{max-width:850px}.page-hero.compact h1{font-size:clamp(2.3rem,4vw,4rem)}.page-hero p{max-width:760px;color:var(--muted);font-size:1.1rem}.media-hero{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center}.media-hero img{border-radius:24px;max-height:330px;width:100%;object-fit:cover;box-shadow:var(--shadow)}.two-col{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:38px;align-items:start}.two-col article>p{font-size:1.04rem}.sticky-card{position:sticky;top:98px;display:grid;gap:12px}.sticky-card img{border-radius:16px}.sticky-card a:not(.btn){padding:8px 0;border-top:1px solid var(--border)}.callout{margin-top:24px;border-left:4px solid var(--brand)}.callout.wide{max-width:900px}.link-list,.check-list{padding-left:22px}.link-list li+li,.check-list li+li{margin-top:8px}.filter-bar{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 28px}.filter-btn{border:1px solid var(--border);background:#fff;color:var(--text);padding:9px 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