:root{--bg-main: #f8fafc;--bg-surface: #ffffff;--bg-card: #ffffff;--bg-card-hover: #f1f5f9;--bg-input: #f1f5f9;--bg-subtle: #f8fafc;--border-color: #e2e8f0;--border-focus: #4f46e5;--primary: #4f46e5;--primary-hover: #4338ca;--primary-glow: rgba(79, 70, 229, .18);--success: #059669;--success-bg: #ecfdf5;--danger: #e11d48;--danger-bg: #fff1f2;--warning: #d97706;--warning-bg: #fffbeb;--text-main: #0f172a;--text-secondary: #334155;--text-muted: #64748b;--font-sans: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", monospace}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-main);color:var(--text-main);min-height:100vh;line-height:1.5;-webkit-font-smoothing:antialiased}.demo-app{display:flex;flex-direction:column;min-height:100vh}.navbar{display:flex;align-items:center;justify-content:space-between;padding:16px 32px;border-bottom:1px solid var(--border-color);background:#ffffffe6;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);position:sticky;top:0;z-index:50}.nav-brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--text-main)}.brand-icon-wrap{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,#4f46e5,#7c3aed);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 4px 12px var(--primary-glow)}.brand-title{font-weight:800;font-size:18px;letter-spacing:-.02em;color:#0f172a}.sdk-pill{font-size:11px;font-weight:600;padding:4px 10px;border-radius:20px;background:#eef2ff;color:#4f46e5;border:1px solid #c7d2fe}.nav-right{display:flex;align-items:center;gap:16px}.main-layout{display:grid;grid-template-columns:1fr 440px;gap:32px;max-width:1400px;margin:0 auto;padding:40px 32px 60px;width:100%}@media(max-width:1024px){.main-layout{grid-template-columns:1fr}}.store-section{display:flex;flex-direction:column;gap:32px}.hero-banner{display:flex;flex-direction:column;gap:12px}.hero-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:20px;background:#ecfdf5;color:#059669;border:1px solid #a7f3d0;font-size:12px;font-weight:600;width:fit-content}.hero-title{font-size:40px;font-weight:800;letter-spacing:-.03em;line-height:1.15;color:#0f172a}.hero-title span{background:linear-gradient(135deg,#4f46e5,#7c3aed);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero-desc{color:var(--text-muted);font-size:16px;max-width:620px;line-height:1.6}.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}.pricing-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;padding:26px;display:flex;flex-direction:column;gap:18px;transition:all .22s ease;position:relative;box-shadow:0 1px 3px #0000000a}.pricing-card:hover{border-color:#cbd5e1;box-shadow:0 10px 25px -5px #00000014;transform:translateY(-2px)}.pricing-card.featured{border-color:var(--primary);box-shadow:0 10px 30px -5px var(--primary-glow);background:#fff}.featured-badge{position:absolute;top:-11px;right:20px;background:var(--primary);color:#fff;font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.05em;padding:3px 10px;border-radius:12px}.card-tier-name{font-size:19px;font-weight:700;color:#0f172a}.card-price-wrap{display:flex;align-items:baseline;gap:4px}.card-price{font-size:34px;font-weight:800;font-family:var(--font-mono);letter-spacing:-.03em;color:#0f172a}.card-period{color:var(--text-muted);font-size:14px;font-weight:500}.card-features{list-style:none;display:flex;flex-direction:column;gap:12px;font-size:13px;color:var(--text-secondary);margin-bottom:auto}.card-features li{display:flex;align-items:center;gap:10px}.card-features li svg{color:var(--success);flex-shrink:0}.buy-btn{background:#f1f5f9;color:#0f172a;border:1px solid #e2e8f0;border-radius:10px;padding:12px 18px;font-size:14px;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;transition:all .18s ease}.buy-btn:hover{background:#e2e8f0;border-color:#cbd5e1;transform:translateY(-1px)}.buy-btn.primary-btn{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 4px 14px var(--primary-glow)}.buy-btn.primary-btn:hover{background:var(--primary-hover)}.sidebar-panel{display:flex;flex-direction:column;gap:20px}.panel-box{background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;padding:22px;display:flex;flex-direction:column;gap:16px;box-shadow:0 1px 3px #0000000a}.panel-header{display:flex;align-items:center;justify-content:space-between}.panel-title{font-size:14px;font-weight:700;display:flex;align-items:center;gap:8px;color:#0f172a}.event-logs-list{display:flex;flex-direction:column;gap:10px;max-height:400px;overflow-y:auto;padding-right:4px}.empty-logs{padding:32px 16px;text-align:center;color:var(--text-muted);font-size:13px;border:1px dashed var(--border-color);border-radius:10px;background:#f8fafc}.log-entry{background:#f8fafc;border:1px solid var(--border-color);border-radius:10px;padding:12px 14px;display:flex;flex-direction:column;gap:8px;font-size:12px;animation:slide-in .2s ease}.log-header{display:flex;align-items:center;justify-content:space-between}.event-badge{font-size:11px;font-weight:700;text-transform:uppercase;padding:2px 7px;border-radius:4px;font-family:var(--font-mono)}.event-success{background:var(--success-bg);color:var(--success);border:1px solid #a7f3d0}.event-error{background:var(--danger-bg);color:var(--danger);border:1px solid #fecdd3}.event-close{background:#f1f5f9;color:#475569;border:1px solid #cbd5e1}.event-ready{background:#eef2ff;color:#4f46e5;border:1px solid #c7d2fe}.log-time{color:var(--text-muted);font-size:11px;font-family:var(--font-mono)}.log-payload{background:#0f172a;color:#38bdf8;border-radius:6px;padding:10px 12px;font-family:var(--font-mono);font-size:11px;white-space:pre-wrap;word-break:break-all}.card-pill-row{display:flex;flex-direction:column;gap:8px}.card-pill-item{display:flex;align-items:center;justify-content:space-between;background:#f8fafc;border:1px solid var(--border-color);padding:10px 14px;border-radius:10px;font-size:13px;cursor:pointer;transition:all .15s ease}.card-pill-item:hover{border-color:var(--primary);background:#eef2ff}.card-num{font-family:var(--font-mono);font-weight:600;color:#0f172a}.code-viewer{background:#0f172a;border:1px solid #1e293b;border-radius:10px;padding:14px;font-family:var(--font-mono);font-size:12px;color:#818cf8;overflow-x:auto;white-space:pre}.clear-btn{background:transparent;border:1px solid var(--border-color);color:var(--text-muted);font-size:11px;cursor:pointer;padding:4px 10px;border-radius:6px;font-weight:600;transition:all .15s ease}.clear-btn:hover{color:var(--text-main);background:#f1f5f9;border-color:#cbd5e1}@keyframes slide-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}