:root{--bg-color:#f8fafc;--surface-color:#fff;--surface-hover:#f1f5f9;--text-main:#0f172a;--text-muted:#475569;--border-color:#e2e8f0;--primary-color:#0284c7;--primary-hover:#0369a1;--primary-contrast:#fff;--accent-bg:#e0f2fe;--accent-text:#0369a1;--code-bg:#1e293b;--code-text:#e2e8f0;--tag-bg:#f1f5f9;--shadow:0 4px 6px -1px #00000012, 0 2px 4px -2px #0000000d;--radius-sm:6px;--radius-md:10px;--radius-lg:16px}@media (prefers-color-scheme:dark){:root{--bg-color:#0b0f19;--surface-color:#111827;--surface-hover:#1f2937;--text-main:#f9fafb;--text-muted:#9ca3af;--border-color:#1f2937;--primary-color:#38bdf8;--primary-hover:#7dd3fc;--primary-contrast:#0b0f19;--accent-bg:#0c4a6e;--accent-text:#bae6fd;--code-bg:#030712;--code-text:#f3f4f6;--tag-bg:#1f2937;--shadow:0 4px 6px -1px #0006, 0 2px 4px -2px #0000004d}}*{box-sizing:border-box;margin:0;padding:0}body{color:var(--text-main);background-color:var(--bg-color);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.6;transition:background-color .2s,color .2s}.container{max-width:960px;margin:0 auto;padding:0 24px}header{border-bottom:1px solid var(--border-color);background-color:var(--surface-color);padding:32px 0 24px}.nav-wrapper{justify-content:space-between;align-items:center;display:flex}.brand-title{letter-spacing:-.02em;color:var(--text-main);align-items:center;gap:8px;font-size:1.35rem;font-weight:700;display:flex}.brand-badge{border-radius:var(--radius-sm);background-color:var(--accent-bg);color:var(--accent-text);text-transform:uppercase;letter-spacing:.05em;padding:2px 8px;font-size:.75rem;font-weight:600}.nav-links{align-items:center;gap:16px;display:flex}.nav-link{color:var(--text-muted);font-size:.95rem;font-weight:500;text-decoration:none;transition:color .15s}.nav-link:hover{color:var(--primary-color)}.hero{text-align:center;padding:64px 0 48px}.hero h1{letter-spacing:-.03em;color:var(--text-main);margin-bottom:16px;font-size:2.5rem;font-weight:800;line-height:1.2}.hero p{color:var(--text-muted);max-width:680px;margin:0 auto 32px;font-size:1.15rem}.hero-actions{flex-wrap:wrap;justify-content:center;gap:16px;display:flex}.btn{border-radius:var(--radius-md);cursor:pointer;border:none;justify-content:center;align-items:center;padding:12px 24px;font-size:.95rem;font-weight:600;text-decoration:none;transition:all .15s;display:inline-flex}.btn-primary{background-color:var(--primary-color);color:var(--primary-contrast)}.btn-primary:hover{background-color:var(--primary-hover)}.btn-secondary{background-color:var(--surface-color);color:var(--text-main);border:1px solid var(--border-color)}.btn-secondary:hover{background-color:var(--surface-hover);border-color:var(--text-muted)}.features-section{padding:48px 0}.section-title{letter-spacing:-.02em;text-align:center;margin-bottom:8px;font-size:1.65rem;font-weight:700}.section-subtitle{text-align:center;color:var(--text-muted);margin-bottom:40px}.notice{border:1px dashed var(--primary-color);border-radius:var(--radius-md);background-color:var(--accent-bg);max-width:680px;color:var(--accent-text);text-align:left;margin:-16px auto 40px;padding:14px 24px;font-size:.95rem}.notice ul{margin:4px 0 0;padding-left:24px}.notice ul li{margin:4px 0 0}.grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;display:grid}.card{background-color:var(--surface-color);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:28px;transition:transform .15s,border-color .15s}.card:hover{border-color:var(--primary-color);transform:translateY(-2px)}.card-icon{margin-bottom:16px;font-size:1.75rem;display:inline-block}.card h3{color:var(--text-main);margin-bottom:8px;font-size:1.15rem;font-weight:700}.card p{color:var(--text-muted);font-size:.95rem;line-height:1.5}.card p a{color:var(--primary-color)}.onboarding-section{padding:48px 0 64px}.onboarding-card{background-color:var(--surface-color);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:36px}.steps-list{color:var(--text-muted);margin:24px 0 32px;padding-left:20px}.steps-list li{margin-bottom:12px;padding-left:8px}.steps-list li strong{color:var(--text-main)}.steps-list a{color:var(--primary-color)}footer{border-top:1px solid var(--border-color);background-color:var(--surface-color);color:var(--text-muted);padding:40px 0;font-size:.9rem}.footer-content{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.footer-links{gap:20px;display:flex}.footer-links a{color:var(--text-muted);text-decoration:none;transition:color .15s}.footer-links a:hover{color:var(--primary-color)}@media (width<=640px){.hero h1{font-size:1.85rem}.hero p{font-size:1rem}.nav-wrapper{flex-direction:column;gap:16px}.footer-content{text-align:center;flex-direction:column}}