:root{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--text-primary: #f8fafc;--text-secondary: #94a3b8;--accent: #f59e0b;--accent-hover: #d97706;--success: #10b981;--success-bg: rgba(16, 185, 129, .1);--border: #334155;--font-sans: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;--font-mono: "JetBrains Mono", monospace}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);color:var(--text-primary);font-family:var(--font-sans);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none;transition:color .2s ease}a:hover{color:var(--accent-hover)}.container{max-width:1200px;margin:0 auto;padding:0 24px}.app-header{background-color:#0f172acc;backdrop-filter:blur(12px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.header-container{height:72px;display:flex;justify-content:space-between;align-items:center}.brand{display:flex;align-items:center;gap:8px}.brand-icon{font-size:1.8rem}.brand-name{font-size:1.4rem;font-weight:800;letter-spacing:-.02em}.brand-accent{color:var(--accent)}.nav-links{display:flex;align-items:center;gap:24px}.nav-link{color:var(--text-secondary);font-weight:600;font-size:.95rem}.nav-link:hover,.nav-link.active{color:var(--text-primary)}.db-badge{background-color:#10b98126;color:var(--success);border:1px solid var(--success);font-size:.75rem;font-weight:700;padding:4px 10px;border-radius:9999px}.main-content{padding:64px 0}.hero-section{text-align:center;max-width:800px;margin:0 auto}.hero-badge{display:inline-block;background-color:var(--bg-secondary);border:1px solid var(--border);color:var(--accent);font-size:.85rem;font-weight:700;padding:6px 14px;border-radius:9999px;margin-bottom:24px}.hero-title{font-size:3rem;font-weight:800;line-height:1.15;letter-spacing:-.04em;margin-bottom:24px}.hero-subtitle{font-size:1.25rem;color:var(--text-secondary);line-height:1.5}.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 28px;border-radius:8px;font-weight:700;font-size:.95rem;cursor:pointer;transition:all .2s ease;border:none}.btn-affiliate{background-color:#e47911;color:#fff;width:100%;padding:10px;font-size:.85rem;border-radius:6px;text-align:center;font-weight:700}.btn-affiliate:hover{background-color:#b85f09;color:#fff}.demo-section{background-color:#1e293b66;border:1px solid var(--border);border-radius:16px;padding:48px}.guide-layout{display:grid;grid-template-columns:2fr 1fr;gap:40px;align-items:start}.guide-steps{display:flex;flex-direction:column;gap:24px}.step-card{background-color:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;padding:24px;display:flex;gap:20px;transition:border-color .2s ease,opacity .2s ease}.step-card.completed{border-color:var(--success);opacity:.75}.step-checkbox-container{position:relative;width:32px;height:32px;flex-shrink:0}.step-checkbox{opacity:0;position:absolute;width:100%;height:100%;cursor:pointer;z-index:2}.step-checkbox-label{position:absolute;top:0;left:0;width:32px;height:32px;background-color:var(--bg-tertiary);border:2px solid var(--border);border-radius:8px;z-index:1;transition:all .2s ease}.step-checkbox:checked+.step-checkbox-label{background-color:var(--success);border-color:var(--success)}.step-checkbox:checked+.step-checkbox-label:after{content:"✓";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#fff;font-weight:800;font-size:1.1rem}.step-num{font-family:var(--font-mono);color:var(--accent);font-weight:700;font-size:.85rem;text-transform:uppercase;display:block;margin-bottom:6px}.step-body h3{font-size:1.3rem;font-weight:700;margin-bottom:12px;letter-spacing:-.01em}.step-body p{color:var(--text-secondary);font-size:.95rem;margin-bottom:16px}.step-spec-callout{background-color:var(--bg-primary);border-left:3px solid var(--accent);padding:10px 16px;border-radius:0 6px 6px 0;font-size:.85rem;font-family:var(--font-mono)}.guide-sidebar{display:flex;flex-direction:column;gap:24px;position:sticky;top:96px}.sidebar-card{background-color:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;padding:24px}.sidebar-card h3{font-size:1.1rem;font-weight:700;margin-bottom:16px;border-bottom:1px solid var(--border);padding-bottom:8px}.tools-list{list-style:none;display:flex;flex-direction:column;gap:12px}.tools-list li{display:flex;align-items:center;gap:10px;font-size:.9rem;color:var(--text-secondary)}.tools-list input[type=checkbox]{width:18px;height:18px;accent-color:var(--accent);cursor:pointer}.affiliate-box{background-color:var(--bg-primary);padding:16px;border-radius:8px;border:1px dashed var(--border)}.app-footer{border-top:1px solid var(--border);padding:48px 0;margin-top:96px;text-align:center;font-size:.9rem;color:var(--text-secondary)}.footer-container{display:flex;flex-direction:column;gap:12px}.tech-sub{font-family:var(--font-mono);font-size:.75rem}@media (max-width: 768px){.guide-layout{grid-template-columns:1fr}}