:root{--color-bg:#f7fafc;--color-surface:#fff;--color-text:#1a202c;--color-muted:#5a6778;--color-primary:#0f766e;--color-primary-hover:#115e59;--color-border:#e2e8f0;--color-notice-bg:#fff7ed;--color-notice-border:#fdba74;--radius:10px;color:var(--color-text);background-color:var(--color-bg);-webkit-font-smoothing:antialiased;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.6}*,:before,:after{box-sizing:border-box}body{background-color:var(--color-bg);margin:0}a{color:var(--color-primary)}.container{width:100%;max-width:1040px;margin:0 auto;padding:0 16px}.app-shell{flex-direction:column;min-height:100vh;display:flex}.site-main{flex:1;padding-bottom:48px}.site-header{background:var(--color-surface);border-bottom:1px solid var(--color-border)}.header-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 24px;min-height:64px;display:flex}.brand{color:var(--color-text);align-items:center;gap:8px;font-size:1.15rem;font-weight:700;text-decoration:none;display:inline-flex}.brand-mark{background:var(--color-primary);color:#fff;border-radius:8px;place-items:center;width:28px;height:28px;font-size:1.2rem;line-height:1;display:inline-grid}.site-header nav{gap:4px;display:flex}.nav-link{color:var(--color-muted);border-radius:6px;padding:6px 12px;font-weight:500;text-decoration:none}.nav-link:hover{color:var(--color-text);background:var(--color-bg)}.nav-link.active{color:var(--color-primary)}.btn{border-radius:var(--radius);font:inherit;cursor:pointer;border:1px solid #0000;padding:10px 18px;font-weight:600;text-decoration:none;display:inline-block}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-secondary{background:var(--color-surface);border-color:var(--color-border);color:var(--color-text)}.btn-secondary:hover{border-color:var(--color-primary)}.hero{background:linear-gradient(180deg, #e6f4f1 0%, var(--color-bg) 100%);padding:64px 0 40px}.hero h1{margin:0 0 12px;font-size:clamp(1.8rem,4vw,2.6rem);line-height:1.2}.lead{color:var(--color-muted);margin:0 0 24px;font-size:1.15rem}.hero-actions{flex-wrap:wrap;gap:12px;display:flex}.features{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:16px;display:grid}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:20px}.card h2{margin:0 0 6px;font-size:1.1rem}.card p{color:var(--color-muted);margin:0}.notice{background:var(--color-notice-bg);border:1px solid var(--color-notice-border);border-radius:var(--radius);margin-top:32px;padding:16px}.prose{max-width:760px;padding-top:40px}.prose h1{margin:0 0 4px}.prose h2{margin:32px 0 8px;font-size:1.2rem}.muted{color:var(--color-muted);margin-top:0}.site-footer{background:var(--color-surface);border-top:1px solid var(--color-border);color:var(--color-muted);font-size:.9rem}.footer-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 24px;padding-top:16px;padding-bottom:16px;display:flex}.footer-inner p{margin:0}