:root{--bg: #f4f5f7;--surface: #ffffff;--border: #e3e5e9;--text: #1b1d21;--text-muted: #6b7075;--primary: #4f46e5;--primary-hover: #4338ca;--success: #15803d;--success-bg: #ecfdf3;--success-border: #b7ecc8;--error: #b91c1c;--error-bg: #fef2f2;--error-border: #f3b7b7;--radius: 14px;--shadow: 0 1px 2px rgba(20, 20, 30, .04), 0 8px 24px rgba(20, 20, 30, .06)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Segoe UI,Pretendard,system-ui,-apple-system,sans-serif}.page{max-width:920px;margin:0 auto;padding:48px 24px 80px}.page__header{text-align:center;margin-bottom:32px}.page__header h1{font-size:28px;margin:0 0 8px;letter-spacing:-.02em}.page__header p{color:var(--text-muted);margin:0;font-size:15px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.card+.card{margin-top:20px}.run-form{display:flex;gap:10px;flex-wrap:wrap}.run-form input{flex:1;min-width:240px;padding:12px 14px;border:1px solid var(--border);border-radius:10px;font-size:15px;outline:none;transition:border-color .15s ease,box-shadow .15s ease}.run-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #4f46e51f}.run-form input.is-invalid{border-color:var(--error)}.run-button{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border:none;border-radius:10px;background:var(--primary);color:#fff;font-size:15px;font-weight:600;cursor:pointer;transition:background .15s ease,transform .05s ease;white-space:nowrap}.run-button:hover:not(:disabled){background:var(--primary-hover)}.run-button:active:not(:disabled){transform:translateY(1px)}.run-button:disabled{background:#b3b6ff;cursor:not-allowed}.spinner{width:14px;height:14px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.field-hint{width:100%;color:var(--error);font-size:13px;margin:8px 0 0}.section-title{font-size:16px;font-weight:600;margin:0 0 14px}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.section-header .section-title{margin-bottom:0}.text-button{border:none;background:transparent;color:var(--text-muted);font-size:13px;cursor:pointer;padding:4px 8px;border-radius:6px;transition:background .15s ease,color .15s ease}.text-button:hover:not(:disabled){background:var(--error-bg);color:var(--error)}.text-button:disabled{opacity:.5;cursor:not-allowed}.scenario-result{margin-top:20px;padding-top:20px;border-top:1px solid var(--border)}.result-placeholder{color:var(--text-muted);font-size:14px;text-align:center;padding:20px 0}.result-status{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:13px;font-weight:600;margin-bottom:12px}.result-status--success{background:var(--success-bg);color:var(--success);border:1px solid var(--success-border)}.result-status--error{background:var(--error-bg);color:var(--error);border:1px solid var(--error-border)}.result-title{font-size:16px;font-weight:600;margin:0 0 4px}.result-message{color:var(--text-muted);font-size:14px;margin:0 0 16px}.result-screenshot{display:block;width:100%;border-radius:10px;border:1px solid var(--border)}.history-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}.history-card{border:1px solid var(--border);border-radius:12px;overflow:hidden;background:var(--surface);transition:box-shadow .15s ease,transform .15s ease}.history-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.history-card__thumb{width:100%;aspect-ratio:16 / 10;object-fit:cover;background:var(--bg);border-bottom:1px solid var(--border);display:block}.history-card__body{padding:12px 14px}.history-card__header{display:flex;align-items:flex-start;justify-content:space-between;gap:8px}.history-card__title{font-weight:600;font-size:14px;margin:0 0 4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.history-card__delete{flex-shrink:0;width:22px;height:22px;border:none;border-radius:6px;background:transparent;color:var(--text-muted);font-size:12px;cursor:pointer;transition:background .15s ease,color .15s ease}.history-card__delete:hover:not(:disabled){background:var(--error-bg);color:var(--error)}.history-card__delete:disabled{opacity:.5;cursor:not-allowed}.history-card__url{color:var(--text-muted);font-size:12px;margin:0 0 6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.history-card__meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-muted)}.history-empty{color:var(--text-muted);font-size:14px;text-align:center;padding:24px 0}