*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--font: "Inter", system-ui, sans-serif;--c-bg: #f8f9fb;--c-bg-alt: #f0f2f6;--c-surface: #ffffff;--c-border: #e4e7ec;--c-text: #111827;--c-text-2: #4b5563;--c-text-3: #9ca3af;--c-blue: #2563eb;--c-blue-light: #eff6ff;--c-blue-mid: #bfdbfe;--c-teal: #0d9488;--c-amber: #d97706;--c-green: #16a34a;--c-red: #dc2626;--radius: 16px;--radius-sm: 10px;--shadow: 0 1px 3px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.06);--shadow-lg: 0 8px 32px rgba(0,0,0,.1);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}html{scroll-behavior:smooth}body{font-family:var(--font);background:var(--c-bg);color:var(--c-text);line-height:1.6;overflow-x:hidden}a{text-decoration:none;color:inherit}.container{max-width:1080px;margin:0 auto;padding:0 24px}@keyframes fadeUp{0%{opacity:0;transform:translateY(28px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes 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span{font-size:.8rem;font-weight:600;color:var(--c-text-2);letter-spacing:.04em;text-transform:uppercase}.flow-arrow-wrap{display:flex;align-items:center;gap:4px;padding:0 8px;position:relative}.flow-arrow-track{width:80px;height:3px;background:var(--c-border);border-radius:99px;overflow:hidden;position:relative}.flow-arrow-dot{position:absolute;width:20px;height:3px;background:linear-gradient(90deg,transparent,var(--c-blue));border-radius:99px;animation:pulse-dot 1.6s ease-in-out infinite}.flow-chevron{width:16px;height:16px;color:var(--c-blue);flex-shrink:0}.scroll-btn{display:inline-flex;align-items:center;gap:8px;background:var(--c-blue);color:#fff;padding:12px 28px;border-radius:99px;font-weight:600;font-size:.95rem;transition:transform .2s,box-shadow .2s,background .2s;box-shadow:0 4px 16px #2563eb4d}.scroll-btn svg{width:18px;height:18px;transition:transform .2s}.scroll-btn:hover{background:#1d4ed8;transform:translateY(-2px);box-shadow:0 6px 24px #2563eb66}.scroll-btn:hover svg{transform:translateY(2px)}.section{padding:96px 0}.section-alt{background:var(--c-bg-alt)}.section-header{text-align:center;margin-bottom:56px}.section-tag{display:inline-block;background:var(--c-blue-light);color:var(--c-blue);border:1px solid var(--c-blue-mid);font-size:.72rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;padding:4px 12px;border-radius:99px;margin-bottom:14px}.section-header h2{font-size:clamp(1.9rem,4vw,2.8rem);font-weight:700;letter-spacing:-.025em;line-height:1.15;margin-bottom:14px}.section-desc{font-size:1.05rem;color:var(--c-text-2);max-width:560px;margin:0 auto;line-height:1.7}.analogy-card{background:var(--c-surface);border:1.5px solid var(--c-border);border-radius:var(--radius);padding:36px 40px;box-shadow:var(--shadow);max-width:720px;margin:0 auto}.analogy-top{display:flex;gap:24px;align-items:flex-start;margin-bottom:28px}.analogy-emoji{font-size:3rem;flex-shrink:0;line-height:1;margin-top:4px}.analogy-top h3{font-size:1.2rem;font-weight:600;margin-bottom:10px}.analogy-top p{color:var(--c-text-2);line-height:1.7}.analogy-roles{display:flex;gap:10px;flex-wrap:wrap}.role-pill{background:var(--c-blue-light);color:var(--c-blue);border:1px solid var(--c-blue-mid);border-radius:99px;padding:6px 16px;font-size:.85rem;font-weight:500;transition:transform .15s}.role-pill:hover{transform:scale(1.04)}.steps-grid{display:grid;grid-template-columns:1fr auto 1fr auto 1fr auto 1fr;align-items:start;gap:0}.step-card{background:var(--c-surface);border:1.5px solid var(--c-border);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow);position:relative;transition:transform .2s,box-shadow .2s}.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.step-num{font-size:.7rem;font-weight:700;letter-spacing:.1em;color:var(--c-blue);margin-bottom:12px}.step-icon-wrap{font-size:2rem;margin-bottom:12px;line-height:1}.step-card h3{font-size:.95rem;font-weight:600;margin-bottom:8px}.step-card p{font-size:.85rem;color:var(--c-text-2);line-height:1.6;margin-bottom:14px}.step-code{background:#f1f5f9;color:var(--c-blue);font-family:SF Mono,Fira Code,monospace;font-size:.75rem;padding:6px 10px;border-radius:var(--radius-sm);display:inline-block;font-weight:500}.step-arrow{font-size:1.6rem;color:var(--c-blue);padding:0 8px;align-self:center;margin-top:-20px;opacity:.6;font-weight:300}.demo-wrapper{display:grid;grid-template-columns:1fr auto 1fr;gap:24px;align-items:start}.demo-panel{background:var(--c-surface);border:1.5px solid var(--c-border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.panel-label{font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--c-text-3);margin-bottom:14px}.code-block{background:#0f172a;border-radius:var(--radius-sm);padding:18px;font-family:SF Mono,Fira Code,monospace;font-size:.8rem;line-height:1.7}.code-line{display:flex;gap:8px}.code-line.small{font-size:.72rem}.code-divider{height:1px;background:#1e293b;margin:10px 0}.method{color:#34d399;font-weight:700}.url{color:#93c5fd}.key{color:#94a3b8}.val{color:#fbbf24}.demo-center-col{display:flex;flex-direction:column;align-items:center;gap:16px;padding-top:40px}.api-btn{background:var(--c-blue);color:#fff;border:none;border-radius:99px;padding:12px 24px;font-size:.9rem;font-weight:600;font-family:var(--font);cursor:pointer;display:flex;align-items:center;gap:8px;white-space:nowrap;transition:transform .2s,box-shadow .2s,background .2s;box-shadow:0 4px 16px #2563eb4d}.api-btn svg{width:16px;height:16px;transition:transform .2s}.api-btn:hover:not(:disabled){background:#1d4ed8;transform:translateY(-2px);box-shadow:0 6px 24px #2563eb66}.api-btn:hover:not(:disabled) svg{transform:translate(3px)}.api-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.travel-track{width:100%;height:4px;background:var(--c-border);border-radius:99px;position:relative;overflow:hidden}.travel-dot{position:absolute;width:24px;height:4px;background:linear-gradient(90deg,transparent,var(--c-blue));border-radius:99px;top:0;left:-100%;opacity:0}.travel-dot.active{animation:travel 1.2s ease-in-out forwards}.status-badge{font-size:.78rem;font-weight:600;padding:4px 12px;border-radius:99px;min-height:24px;opacity:0;transition:opacity .3s}.status-badge.show{opacity:1;animation:statusIn .3s ease}.status-badge.ok{background:#dcfce7;color:var(--c-green)}.status-badge.loading{background:#fef9c3;color:var(--c-amber)}.response-area{min-height:180px;position:relative}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:32px;text-align:center;transition:opacity .3s}.empty-icon{font-size:2rem}.empty-state p{color:#64748b;font-size:.8rem;font-family:var(--font)}.json-output{color:#e2e8f0;font-family:SF Mono,Fira Code,monospace;font-size:.76rem;line-height:1.7;white-space:pre-wrap;word-break:break-all;max-height:0;overflow:hidden;opacity:0;transition:max-height .6s ease,opacity .4s ease}.json-output.visible{max-height:400px;opacity:1}.json-key{color:#93c5fd}.json-str{color:#86efac}.json-num{color:#fbbf24}.json-bool{color:#f472b6}.reasons-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.reason-card{background:var(--c-surface);border:1.5px solid var(--c-border);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}.reason-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--c-blue-mid)}.reason-icon{font-size:2rem;margin-bottom:14px;line-height:1}.reason-card h3{font-size:.95rem;font-weight:600;margin-bottom:8px}.reason-card p{font-size:.85rem;color:var(--c-text-2);line-height:1.6}.footer{background:var(--c-text);color:#e5e7eb;padding:48px 0 24px}.footer-inner{display:flex;align-items:flex-start;justify-content:space-between;gap:32px;margin-bottom:32px;flex-wrap:wrap}.footer-logo{font-size:1.1rem;font-weight:700;color:#fff;margin-bottom:6px}.footer-brand p{font-size:.85rem;color:#9ca3af}.footer-nav{display:flex;gap:24px;flex-wrap:wrap}.footer-nav a{font-size:.875rem;color:#9ca3af;transition:color .2s}.footer-nav a:hover{color:#fff}.footer-bottom{border-top:1px solid #374151;padding-top:20px;text-align:center}.footer-bottom p{font-size:.8rem;color:#6b7280}@media (max-width: 900px){.steps-grid{grid-template-columns:1fr;gap:0}.step-arrow{transform:rotate(90deg);margin:0 auto;padding:4px 0}.demo-wrapper{grid-template-columns:1fr}.demo-center-col{padding-top:0;flex-direction:row;flex-wrap:wrap;justify-content:center}.travel-track{display:none}.reasons-grid{grid-template-columns:1fr 1fr}}@media (max-width: 600px){.flow-diagram{gap:0}.flow-arrow-track{width:40px}.flow-node{padding:14px 16px;min-width:80px}.node-icon{font-size:1.4rem}.analogy-top{flex-direction:column}.analogy-card{padding:24px 20px}.reasons-grid{grid-template-columns:1fr}.footer-inner{flex-direction:column}.section{padding:64px 0}.hero-content{padding:80px 0 60px}}