:root{--brand-primary:#4f46e5;--brand-bg:#faf9f7;--brand-text:#1e293b;--brand-muted:#64748b;--brand-card-bg:#ffffff;--brand-card-border:#e8e5e0;--brand-alt-bg:#f1efe9;--brand-highlight:#ec4899}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--brand-bg);color:var(--brand-text);line-height:1.7;-webkit-font-smoothing:antialiased}.brand-nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(250,249,247,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--brand-card-border)}@media (prefers-color-scheme:dark){:root{--brand-bg:#0f172a;--brand-text:#f8fafc;--brand-muted:#94a3b8;--brand-card-bg:#1e293b;--brand-card-border:#334155;--brand-alt-bg:#1a2332;--brand-highlight:#f472b6}.brand-nav{background:rgba(15,23,42,.9)}}.brand-nav-inner{max-width:720px;margin:0 auto;padding:14px 20px;display:flex;align-items:center}.brand-nav-logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--brand-text)}.brand-nav-logo-img{width:28px;height:28px}.brand-nav-logo-text{font-size:16px;font-weight:700}.brand-hero{max-width:720px;margin:0 auto;padding:140px 20px 80px;text-align:center}.brand-hero-sub{font-size:18px;color:var(--brand-muted);margin-bottom:8px;letter-spacing:.5px}.brand-hero-title{font-size:48px;font-weight:800;line-height:1.2;margin-bottom:28px;letter-spacing:-1px}.brand-hero-desc{font-size:17px;color:var(--brand-muted);line-height:1.9}.brand-section{padding:80px 20px}.brand-section-alt{background:var(--brand-alt-bg)}.brand-section-inner{max-width:720px;margin:0 auto}.brand-section-title{font-size:28px;font-weight:700;margin-bottom:32px;text-align:center;letter-spacing:-.5px}.brand-story-text{font-size:17px;color:var(--brand-muted);line-height:1.9;text-align:center;margin-bottom:20px}.brand-story-highlight{font-size:20px;font-weight:600;color:var(--brand-text);text-align:center;margin:36px 0;line-height:1.7;padding:24px;border-left:3px solid var(--brand-highlight);background:var(--brand-alt-bg);border-radius:0 12px 12px 0}.brand-test-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}.brand-test-card{background:var(--brand-card-bg);border:1px solid var(--brand-card-border);border-radius:16px;padding:24px 20px;text-align:center;transition:transform .2s,box-shadow .2s}.brand-test-card:hover{transform:translateY(-3px);box-shadow:0 12px 32px rgba(0,0,0,.08)}.brand-test-emoji{font-size:32px;display:block;margin-bottom:12px}.brand-test-name{font-size:16px;font-weight:700;margin-bottom:6px}.brand-test-desc{font-size:13px;color:var(--brand-muted);margin-bottom:16px;line-height:1.5}.brand-test-link{display:inline-block;font-size:13px;font-weight:600;color:var(--brand-primary);text-decoration:none;padding:6px 16px;border:1px solid var(--brand-primary);border-radius:20px;transition:background .2s,color .2s}.brand-test-link:hover{background:var(--brand-primary);color:#fff}.brand-cta-section{text-align:center;padding:100px 20px}.brand-cta-text{font-size:28px;font-weight:700;margin-bottom:8px}.brand-cta-sub{font-size:17px;color:var(--brand-muted);margin-bottom:32px}.brand-cta-btn{display:inline-block;padding:16px 40px;font-size:16px;font-weight:700;color:#fff;background:var(--brand-primary);border-radius:28px;text-decoration:none;transition:opacity .2s,transform .2s}.brand-cta-btn:hover{opacity:.9;transform:translateY(-1px)}@media (max-width:600px){.brand-hero{padding:120px 20px 60px}.brand-hero-title{font-size:36px}.brand-hero-desc{font-size:15px}.brand-section-title{font-size:24px}.brand-test-list{grid-template-columns:repeat(2,1fr);gap:12px}.brand-test-card{padding:20px 14px}.brand-cta-text{font-size:24px}}