:root{--primary: #1a73e8;--primary-dark: #1557b0;--primary-light: #e8f0fe;--success: #34a853;--success-light: #e6f4ea;--danger: #ea4335;--danger-light: #fce8e6;--text: #202124;--text-secondary: #5f6368;--border: #dadce0;--bg: #f8f9fa;--card-bg: #ffffff;--shadow: 0 1px 3px rgba(60,64,67,.12), 0 1px 2px rgba(60,64,67,.08);--shadow-lg: 0 4px 12px rgba(60,64,67,.15), 0 2px 4px rgba(60,64,67,.1);--radius: 12px;--radius-sm: 8px}.app{min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}.header{background:linear-gradient(135deg,#0d47a1,#1976d2,#2196f3);color:#fff;padding:20px 16px;box-shadow:0 2px 8px #0d47a14d;position:sticky;top:0;z-index:100}.header-content{max-width:600px;margin:0 auto;display:flex;align-items:center;gap:14px}.logo-icon{width:44px;height:44px;background:#fff3;border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.logo-icon svg{width:26px;height:26px;color:#fff}.header-title{font-size:20px;font-weight:700;letter-spacing:.5px}.header-subtitle{font-size:11px;opacity:.85;margin-top:2px;letter-spacing:1px}.main{flex:1;padding:20px 16px 40px;max-width:600px;margin:0 auto;width:100%}.form-card{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px 20px;border-top:4px solid var(--primary)}.form-title{font-size:20px;font-weight:700;color:var(--text);margin-bottom:6px;text-align:center}.form-desc{font-size:13px;color:var(--text-secondary);margin-bottom:24px;text-align:center}.note-msg{display:flex;align-items:flex-start;gap:10px;background-color:#fff8e1;color:#b06000;padding:14px 16px;border-radius:10px;font-size:14px;line-height:1.5;margin-bottom:24px;border:1px solid #ffecb3}.note-msg svg{flex-shrink:0;margin-top:2px;color:#fbbc04}.form-group{margin-bottom:20px}.form-label{display:flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px}.label-icon{color:var(--primary);display:flex;align-items:center}.required{color:var(--danger);margin-left:2px}.form-select,.form-input{width:100%;box-sizing:border-box;padding:12px 14px;font-size:15px;border:1.5px solid var(--border);border-radius:var(--radius-sm);background:#fff;color:var(--text);transition:all .2s;-webkit-appearance:none;-moz-appearance:none;appearance:none;outline:none;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.form-select option{max-width:100%;overflow:hidden;text-overflow:ellipsis}.form-select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235f6368' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}.form-select:disabled{background-color:#f1f3f4;color:#9aa0a6;cursor:not-allowed}.form-select:focus,.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #1a73e826}.error-msg{background:var(--danger-light);color:var(--danger);padding:10px 14px;border-radius:var(--radius-sm);font-size:13px;margin-bottom:16px;border-left:3px solid var(--danger)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;font-size:15px;font-weight:600;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:all .2s;outline:none}.btn-primary{background:linear-gradient(135deg,#1976d2,#1565c0);color:#fff;box-shadow:0 2px 6px #1976d24d}.btn-primary:hover{background:linear-gradient(135deg,#1565c0,#0d47a1);box-shadow:0 4px 10px #1976d266;transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.btn-primary:disabled{opacity:.7;cursor:not-allowed;transform:none}.btn-block{width:100%;margin-top:8px}.spinner{width:18px;height:18px;border:2.5px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.success-card{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:48px 24px;text-align:center;border-top:4px solid var(--success)}.success-icon{width:72px;height:72px;margin:0 auto 20px;background:var(--success-light);border-radius:50%;display:flex;align-items:center;justify-content:center;animation:popIn .4s ease-out}.success-icon svg{width:40px;height:40px;color:var(--success)}@keyframes popIn{0%{transform:scale(0);opacity:0}60%{transform:scale(1.1)}to{transform:scale(1);opacity:1}}.success-title{font-size:22px;font-weight:700;color:var(--text);margin-bottom:10px}.success-desc{font-size:14px;color:var(--text-secondary);line-height:1.6;margin-bottom:28px}.footer{text-align:center;padding:16px;color:var(--text-secondary);font-size:12px}@media (min-width: 768px){.header{padding:28px 24px}.header-title{font-size:24px}.main{padding:32px 24px 60px}.form-card{padding:36px 32px}}