:root{--primary:#5B4BDB;--primary-soft:#8B7CF6;--dark:#1E1B2E;--bg:#F7F7FB;--bg2:#EFEFFC;--text:#292734;--muted:#6F6B7A;--accent:#F05A7E;--line:#dddced;--white:#fff;--shadow:0 18px 45px rgba(45,39,91,.10);--radius:24px;--container: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:1.75}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}button{font:inherit}.container{width:var(--container);margin-inline:auto}.skip-link{position:absolute;left:16px;top:-80px;background:var(--dark);color:#fff;padding:10px 14px;border-radius:10px;z-index:1000}.skip-link:focus{top:16px}.site-header{background:rgba(247,247,251,.96);border-bottom:1px solid 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a[aria-current=page]::after{content:"";position:absolute;left:0;right:0;bottom:-15px;height:3px;border-radius:4px;background:var(--primary)}.eyebrow{font-size:.76rem;letter-spacing:.18em;font-weight:800;color:var(--primary);margin:0 0 10px;text-transform:uppercase}.hero-band{padding:64px 0 58px;background:linear-gradient(180deg,var(--bg2),var(--bg))}.hero-layout{display:grid;grid-template-columns:1.08fr .92fr;gap:54px;align-items:center}.hero-copy h1,.page-intro h1,.app-hero h1{font-size:clamp(2.3rem,5vw,4.75rem);line-height:1.08;letter-spacing:-.04em;color:var(--dark);margin:0 0 20px}.hero-lead,.lead{font-size:1.14rem;color:var(--muted);max-width:760px;margin:0}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:14px;font-weight:700}.button.primary{background:var(--primary);color:#fff;box-shadow:0 12px 28px rgba(91,75,219,.25)}.button.secondary{background:#fff;border:1px solid var(--line);color:var(--dark)}.button.dark{background:var(--dark);color:#fff}.hero-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:30px}.hero-meta span,.badge{padding:6px 10px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:.82rem;color:var(--muted)}.hero-media img{border-radius:34px;box-shadow:var(--shadow);aspect-ratio:1.46/1;object-fit:cover}.focus-strip{padding:76px 0}.section-heading{margin-bottom:28px}.section-heading h2{font-size:clamp(1.7rem,3vw,2.5rem);line-height:1.2;margin:0;color:var(--dark)}.inline-heading{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:end}.inline-heading>p{margin:0;color:var(--muted)}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 10px 24px 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span{color:#bcb8ca;font-size:.92rem}.secondary-flow{padding:80px 0}.image-copy-split{display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:center}.image-copy-split figure{margin:0}.image-copy-split img{border-radius:28px;box-shadow:var(--shadow)}.image-copy-split h2{font-size:clamp(1.8rem,3.5vw,3rem);line-height:1.18;margin:0 0 16px}.image-copy-split p{color:var(--muted)}.faq-preview{padding:20px 0 90px}.faq-list{display:grid;gap:12px}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:0 18px}.faq-list summary{cursor:pointer;font-weight:700;padding:18px 0;color:var(--dark)}.faq-list p{margin:0 0 18px;color:var(--muted)}.breadcrumbs{width:var(--container);margin:26px auto 0;font-size:.9rem;color:var(--muted);display:flex;gap:8px;align-items:center}.breadcrumbs a:hover{color:var(--primary)}.page-intro{padding:54px 0 44px}.split-intro,.video-intro,.faq-intro{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}.page-intro figure{margin:0}.page-intro figure img{border-radius:28px;box-shadow:var(--shadow)}.prose-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding:20px 0 50px}.prose-columns article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px}.prose-columns h2{font-size:1.3rem;line-height:1.35;margin-top:0}.prose-columns p{color:var(--muted);margin-bottom:0}.identity-panel{display:grid;grid-template-columns:repeat(3,1fr);background:var(--bg2);border-radius:24px;padding:26px;gap:14px;margin-bottom:70px}.identity-panel>div{background:#fff;border-radius:16px;padding:18px}.identity-panel .label{display:block;font-size:.82rem;color:var(--muted);margin-bottom:4px}.related-section{width:var(--container);margin:0 auto 80px}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.related-link{display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--line);padding:18px;border-radius:18px}.related-link span{font-weight:800;color:var(--dark)}.related-link small{color:var(--muted);font-size:.9rem}.wide-intro{max-width:980px}.story-stack{padding:10px 0 70px;display:grid;gap:56px}.story-row{display:grid;grid-template-columns:.95fr 1.05fr;gap:50px;align-items:center}.story-row.reverse figure{order:2}.story-row figure{margin:0}.story-row img{border-radius:26px;box-shadow:var(--shadow);width:100%;aspect-ratio:1.48/1;object-fit:cover}.story-index{font-size:.8rem;font-weight:800;color:var(--accent);letter-spacing:.15em}.story-row h2{font-size:clamp(1.6rem,3vw,2.4rem);margin:6px 0 10px;line-height:1.2}.story-summary{font-weight:700;color:var(--dark)}.story-row p:not(.story-summary){color:var(--muted)}.note-panel{display:flex;align-items:center;justify-content:space-between;gap:30px;background:var(--bg2);padding:28px;border-radius:24px;margin-bottom:70px}.note-panel h2{margin:0 0 6px}.note-panel 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80px}.app-main,.checklist{background:#fff;border:1px solid var(--line);border-radius:24px;padding:26px}.app-main h2,.checklist h2{margin-top:0}.app-main p,.checklist li{color:var(--muted)}.app-main img{margin-top:22px;border-radius:18px}.checklist ul{padding-left:20px;margin-bottom:0}.checklist li+li{margin-top:14px}.faq-list.full{padding:10px 0 60px;max-width:900px}.support-strip{display:flex;align-items:center;justify-content:space-between;gap:30px;background:var(--dark);color:#fff;border-radius:24px;padding:28px;margin-bottom:80px}.support-strip h2{margin:0 0 4px}.support-strip p{margin:0;color:#c6c3d0}.support-actions{display:flex;gap:10px;flex-wrap:wrap}.support-actions a{padding:9px 12px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:10px}.error-panel{padding:100px 0 120px;text-align:center;max-width:760px}.error-code{display:inline-block;font-size:5rem;font-weight:900;line-height:1;color:var(--primary);opacity:.22}.error-panel h1{font-size:2.6rem;margin:14px 0}.error-panel p{color:var(--muted)}.error-panel .hero-actions{justify-content:center}.site-footer{background:#ececf8;border-top:1px solid var(--line);padding:46px 0}.footer-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:30px}.footer-brand{font-size:1.8rem;font-weight:900;color:var(--dark)}.footer-grid p{color:var(--muted);margin:.5rem 0}.footer-links{display:grid;gap:8px}.footer-links a:hover{color:var(--primary)}.footer-meta{text-align:right}.back-top{position:fixed;right:22px;bottom:22px;width:44px;height:44px;border:0;border-radius:50%;background:var(--primary);color:#fff;box-shadow:0 12px 26px rgba(91,75,219,.26);opacity:0;pointer-events:none;transform:translateY(8px);transition:.2s}.back-top.visible{opacity:1;pointer-events:auto;transform:none}:focus-visible{outline:3px solid rgba(240,90,126,.35);outline-offset:3px}@media (max-width:900px){.hero-layout,.ribbon-grid,.image-copy-split,.split-intro,.video-intro,.faq-intro,.app-hero,.app-grid{grid-template-columns:1fr}.feature-grid,.prose-columns,.related-grid{grid-template-columns:1fr 1fr}.inline-heading{grid-template-columns:1fr}.video-row{grid-template-columns:260px 1fr}.story-row{grid-template-columns:1fr}.story-row.reverse figure{order:0}.identity-panel{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-meta{text-align:left}}@media (max-width:680px){:root{--container:min(100% - 28px,1180px)}.site-header{position:relative}.menu-toggle{display:block}.primary-nav{display:none}.primary-nav.open{display:block}.nav-inner{align-items:stretch;flex-direction:column;gap:0;padding:8px 0 16px}.nav-inner a{padding:10px 0}.nav-inner a[aria-current=page]::after{display:none}.hero-band{padding-top:36px}.hero-layout{gap:30px}.hero-copy h1,.page-intro h1,.app-hero h1{font-size:2.35rem}.feature-grid,.prose-columns,.related-grid{grid-template-columns:1fr}.ribbon-grid{gap:32px}.image-copy-split{gap:28px}.story-stack{gap:34px}.story-row{gap:22px}.video-row{grid-template-columns:1fr}.note-panel,.support-strip{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr}.back-top{right:14px;bottom:14px}.breadcrumbs{margin-top:18px}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

.search-shell{padding:0 0 90px}.search-form{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px}.search-form label{display:block;font-weight:800;margin-bottom:10px}.search-form>div{display:flex;gap:10px}.search-form input{flex:1;min-width:0;border:1px solid var(--line);border-radius:14px;padding:12px 14px;font:inherit;background:var(--bg)}.search-status{margin:24px 0;color:var(--muted)}.search-results{display:grid;gap:16px}.search-results article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px}.search-results h2{margin:10px 0 8px;font-size:1.35rem}.search-results p{color:var(--muted)}.result-summary{font-weight:700;color:var(--text)!important}.empty-result,.search-suggestions{margin-top:22px;background:var(--bg2);border-radius:20px;padding:22px}.search-suggestions h2{margin-top:0}.search-suggestions>div{display:flex;flex-wrap:wrap;gap:10px}.search-suggestions a{background:#fff;border:1px solid var(--line);padding:8px 12px;border-radius:10px;color:var(--primary);font-weight:700}@media (max-width:680px){.search-form>div{flex-direction:column}}