* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    :root {
      --bg: #f8f6f1;
      --card-bg: #ffffff;
      --text-primary: #2d2a26;
      --text-secondary: #6b6560;
      --text-hint: #9c958c;
      --accent: #8b6914;
      --accent-light: #c4a84c;
      --border: #e5e0d8;
      --safe-bottom: env(safe-area-inset-bottom, 0px);
    }

    body {
      font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
      background: var(--bg);
      color: var(--text-primary);
      min-height: 100vh;
      -webkit-font-smoothing: antialiased;
    }

    .header {
      padding: 24px 20px 20px;
      text-align: center;
    }

    .header h1 {
      font-size: 22px;
      font-weight: 600;
      color: var(--accent);
      letter-spacing: 0.1em;
    }

    .header p {
      font-size: 15px;
      color: var(--text-secondary);
      margin-top: 8px;
    }

    .content {
      padding: 0 20px 100px;
      max-width: 500px;
      margin: 0 auto;
    }

    .form-card {
      background: var(--card-bg);
      border-radius: 16px;
      padding: 24px 20px;
      margin-bottom: 16px;
      box-shadow: 0 2px 12px rgba(45, 42, 38, 0.08);
    }

    .form-title {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .form-title::before {
      content: '';
      width: 4px;
      height: 18px;
      background: var(--accent);
      border-radius: 2px;
    }

    .form-item {
      margin-bottom: 20px;
    }

    .form-item:last-child {
      margin-bottom: 0;
    }

    .form-label {
      display: block;
      font-size: 15px;
      font-weight: 500;
      margin-bottom: 10px;
      color: var(--text-primary);
    }

    .form-label .required {
      color: #c75146;
      margin-left: 2px;
    }

    .form-input {
      width: 100%;
      padding: 14px 16px;
      border: 1px solid var(--border);
      border-radius: 12px;
      font-size: 15px;
      font-family: inherit;
      background: var(--bg);
      color: var(--text-primary);
      transition: all 0.2s;
    }

    .form-input:focus {
      outline: none;
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(139, 105, 20, 0.1);
    }

    .form-input::placeholder {
      color: var(--text-hint);
    }

    textarea.form-input {
      min-height: 100px;
      resize: vertical;
    }

    .radio-group {
      display: flex;
      gap: 12px;
    }

    .radio-item {
      flex: 1;
      position: relative;
    }

    .radio-item input {
      position: absolute;
      opacity: 0;
      width: 0;
      height: 0;
    }

    .radio-item label {
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 14px;
      background: var(--bg);
      border: 2px solid var(--border);
      border-radius: 12px;
      font-size: 15px;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.2s;
    }

    .radio-item input:checked + label {
      background: rgba(139, 105, 20, 0.1);
      border-color: var(--accent);
      color: var(--accent);
    }

    .form-hint {
      font-size: 12px;
      color: var(--text-hint);
      margin-top: 8px;
    }

    .btn-area {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      padding: 16px 20px calc(16px + var(--safe-bottom));
      background: rgba(248, 246, 241, 0.95);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-top: 1px solid var(--border);
    }

    .btn {
      width: 100%;
      padding: 16px;
      background: var(--accent);
      color: white;
      border: none;
      border-radius: 12px;
      font-size: 15px;
      font-weight: 600;
      font-family: inherit;
      cursor: pointer;
      transition: all 0.2s;
    }

    .btn:active {
      transform: scale(0.98);
      opacity: 0.9;
    }

    .btn:disabled {
      background: var(--text-hint);
      cursor: not-allowed;
    }

    /* 年份选择器 */
    .year-select {
      display: flex;
      gap: 8px;
    }

    .year-select select {
      flex: 1;
      padding: 14px 12px;
      border: 1px solid var(--border);
      border-radius: 12px;
      font-size: 15px;
      font-family: inherit;
      background: var(--bg);
      color: var(--text-primary);
      cursor: pointer;
      appearance: none;
      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='%236b6560' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 12px center;
    }

    .year-select select:focus {
      outline: none;
      border-color: var(--accent);
    }

    /* PC端适配 */
    @media (min-width: 768px) {
      .content {
        padding: 0 32px 120px;
      }
      .form-card {
        padding: 32px 28px;
      }
    }