:root{--primary: #7c3aed;--primary-dark: #6d28d9;--primary-light: #ede9fe;--accent: #059669;--bg: #f8f7ff;--surface: #ffffff;--surface2: #f3f4f6;--border: #e5e7eb;--text: #111827;--text-muted: #6b7280;--success: #059669;--error: #dc2626;--radius: 16px;--shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(124,58,237,.06);--shadow-hover: 0 4px 12px rgba(0,0,0,.12), 0 8px 24px rgba(124,58,237,.1)}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.app{max-width:680px;margin:0 auto;padding:0 20px 60px;min-height:100vh}.header{padding:32px 0 8px;text-align:center}.header-logo{display:inline-flex;align-items:center;gap:14px;margin-bottom:10px}.header-icon{width:52px;height:52px;background:linear-gradient(135deg,#7c3aed,#a855f7);border-radius:14px;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 14px #7c3aed59}.header-icon svg{width:28px;height:28px;fill:#fff}.header h1{font-size:2rem;font-weight:800;color:var(--text);letter-spacing:-.5px}.header-sub{color:var(--text-muted);font-size:.9rem;margin-top:6px}.hero-pills{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin:14px 0 24px}.pill{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:5px 14px;font-size:.78rem;color:var(--text-muted);font-weight:500}.pill span{margin-right:4px}.stepper{display:flex;align-items:center;justify-content:center;gap:0;padding:0 0 28px}.step{display:flex;flex-direction:column;align-items:center;gap:6px;font-size:.72rem;color:var(--text-muted);font-weight:500}.step-connector{width:48px;height:2px;background:var(--border);margin:0 4px 18px;border-radius:2px;transition:background .3s}.step-connector.done{background:var(--primary)}.step.active{color:var(--primary)}.step.done{color:var(--success)}.step-dot{width:34px;height:34px;border-radius:50%;background:var(--surface);border:2px solid var(--border);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.85rem;box-shadow:var(--shadow);transition:all .3s}.step.active .step-dot{border-color:var(--primary);background:var(--primary);color:#fff;box-shadow:0 0 0 4px #7c3aed26}.step.done .step-dot{border-color:var(--success);background:var(--success);color:#fff}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px 24px;margin-bottom:14px;box-shadow:var(--shadow)}.card-title{font-size:.95rem;font-weight:700;margin-bottom:16px;color:var(--primary);display:flex;align-items:center;gap:6px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 22px;border-radius:12px;border:none;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .2s;text-decoration:none;width:100%}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,#7c3aed,#a855f7);color:#fff;box-shadow:0 4px 12px #7c3aed4d}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 20px #7c3aed66}.btn-secondary{background:var(--surface2);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){background:var(--border)}.btn-success{background:linear-gradient(135deg,#059669,#10b981);color:#fff;box-shadow:0 4px 12px #05966940}.btn-success:hover:not(:disabled){transform:translateY(-1px)}.btn-accent{background:linear-gradient(135deg,#7c3aed,#a855f7);color:#fff;font-weight:700;box-shadow:0 4px 12px #7c3aed4d}.input-group{margin-bottom:14px}.input-group label{display:block;font-size:.82rem;color:var(--text-muted);margin-bottom:6px;font-weight:500}.input-group input,.input-group textarea,.input-group select{width:100%;background:var(--surface2);border:1.5px solid var(--border);border-radius:10px;padding:11px 14px;color:var(--text);font-size:.95rem;outline:none;transition:border-color .2s}.input-group input:focus,.input-group textarea:focus,.input-group select:focus{border-color:var(--primary);background:#fff}.input-group textarea{resize:vertical;min-height:80px}.input-group select option{background:#fff}.row{display:flex;gap:12px}.row .input-group{flex:1}.btn-row{display:flex;gap:10px;margin-top:8px}.btn-row .btn{flex:1}.spinner{width:18px;height:18px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.tag-grid{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}.tag{background:var(--primary-light);color:var(--primary);padding:4px 10px;border-radius:20px;font-size:.78rem;font-weight:500}.copy-area{background:var(--surface2);border:1.5px solid var(--border);border-radius:10px;padding:14px;font-size:.9rem;line-height:1.6;white-space:pre-wrap;word-break:break-word;margin:8px 0 4px;min-height:80px}video{width:100%;border-radius:12px;background:#000;display:block;box-shadow:var(--shadow)}.platform-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:12px}.platform-btn{display:flex;flex-direction:column;align-items:center;gap:7px;padding:16px 8px;background:var(--surface2);border:1.5px solid var(--border);border-radius:14px;cursor:pointer;transition:all .2s;font-size:.78rem;color:var(--text);text-decoration:none;font-weight:500}.platform-btn:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-hover);background:var(--surface)}.platform-logo{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center}.platform-logo svg{width:22px;height:22px}.error-banner{background:#fef2f2;border:1px solid #fecaca;border-radius:var(--radius);padding:12px 16px;color:var(--error);margin-bottom:14px;font-size:.88rem}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:#1f2937;color:#fff;padding:12px 24px;border-radius:12px;font-size:.88rem;font-weight:500;z-index:999;box-shadow:0 8px 24px #0003;animation:toastIn .3s ease}@keyframes toastIn{0%{opacity:0;transform:translate(-50%) translateY(10px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.social-strip{margin:4px 0 20px;text-align:center}.social-strip-label{display:block;font-size:.75rem;color:var(--text-muted);margin-bottom:10px;font-weight:500}.social-strip-logos{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}.strip-icon{width:26px;height:26px;display:flex;align-items:center;justify-content:center}.strip-icon svg{width:26px;height:26px;display:block}@media (min-width: 640px){.app{padding:0 32px 60px}.header h1{font-size:2.4rem}.platform-grid{grid-template-columns:repeat(5,1fr)}.card{padding:26px 28px}}@media (max-width: 480px){.platform-grid{grid-template-columns:repeat(4,1fr)}.platform-btn{padding:12px 4px}}