:root {
    --primary: #2f8f86;
    --primary-dark: #1f6b64;
    --primary-light: #e5f5f3;
    --accent: #6fd9d3;
    --ink: #1f2937;
    --ink-soft: #4b5563;
    --border: #d7dce3;
    --bg: #f5f7fa;
    --card-bg: #ffffff;
    --danger: #dc2626;
    --success: #16a34a;
    --radius: 10px;
    --shadow: 0 1px 2px rgba(16,24,40,0.06), 0 1px 3px rgba(16,24,40,0.08);
  }

  * { box-sizing: border-box; }

  body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.5;
  }

  header.site {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 18px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 20;
  }

  .brand {
    display: flex;
    align-items: center;
    gap: 16px;
  }

  .brand-logo {
    height: 30px;
    width: auto;
    display: block;
  }

  .brand-tag {
    font-size: 12px;
    color: var(--ink-soft);
    padding-left: 16px;
    border-left: 1px solid var(--border);
  }

  .container {
    max-width: 880px;
    margin: 0 auto;
    padding: 40px 20px 100px;
  }

  .intro {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 32px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
  }

  .intro h1 {
    margin: 0 0 8px;
    font-size: 26px;
    letter-spacing: -0.3px;
  }

  .intro p {
    margin: 0;
    color: var(--ink-soft);
    font-size: 14.5px;
  }

  form {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }

  fieldset {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 28px 28px;
    box-shadow: var(--shadow);
  }

  legend {
    font-size: 15px;
    font-weight: 700;
    padding: 0 8px;
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .legend-num {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary-dark);
    font-size: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
  }

  .section-note {
    font-size: 13px;
    color: var(--ink-soft);
    margin: -4px 0 16px 30px;
  }

  .vf-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px 20px;
  }

  .field {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .field.full {
    grid-column: 1 / -1;
  }

  label {
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
  }

  label .req {
    color: var(--danger);
    margin-left: 2px;
  }

  .hint {
    font-size: 12px;
    color: var(--ink-soft);
    margin-top: -2px;
  }

  input[type="text"],
  input[type="email"],
  input[type="tel"],
  input[type="date"],
  input[type="url"],
  select,
  textarea {
    font: inherit;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: 7px;
    background: #fff;
    color: var(--ink);
    width: 100%;
  }

  input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
  }

  input.touched-invalid {
    border-color: var(--danger);
  }

  .file-drop {
    border: 1.5px dashed var(--border);
    border-radius: 8px;
    padding: 14px 14px;
    background: #fafbfc;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--ink-soft);
    cursor: pointer;
    transition: border-color .15s, background .15s;
  }

  .file-drop:hover { border-color: var(--primary); background: var(--primary-light); }

  .file-drop input[type="file"] { display: none; }

  .file-drop .file-name {
    color: var(--ink);
    font-weight: 600;
  }

  .file-icon {
    flex: 0 0 auto;
    width: 30px;
    height: 30px;
    border-radius: 6px;
    background: var(--primary-light);
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
  }

  .template-link {
    font-size: 12px;
    margin-top: 4px;
  }

  .template-link a {
    color: var(--primary);
    text-decoration: none;
  }

  .template-link a:hover { text-decoration: underline; }

  .callout {
    grid-column: 1 / -1;
    background: #fff7ed;
    border: 1px solid #fed7aa;
    color: #9a3412;
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 12.5px;
  }

  .callout.info {
    background: var(--primary-light);
    border-color: #bcd4fb;
    color: var(--primary-dark);
  }

  .submit-bar {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    box-shadow: var(--shadow);
  }

  .submit-bar p {
    margin: 0;
    font-size: 12.5px;
    color: var(--ink-soft);
    max-width: 460px;
  }

  button.submit {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    border: none;
    padding: 13px 30px;
    border-radius: 8px;
    font-size: 14.5px;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
    transition: filter .15s;
  }

  button.submit:hover { filter: brightness(0.94); }

  .progress-wrap {
    max-width: 880px;
    margin: 0 auto 20px;
    padding: 0 20px;
  }

  .progress-track {
    height: 6px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
  }

  .progress-fill {
    height: 100%;
    background: var(--primary);
    width: 0%;
    transition: width .2s;
  }

  .progress-label {
    font-size: 12px;
    color: var(--ink-soft);
    margin-top: 6px;
    text-align: right;
  }

  .success-panel {
    display: none;
    max-width: 880px;
    margin: 40px auto;
    padding: 48px 32px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow);
  }

  .success-panel .check {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #ecfdf5;
    color: var(--success);
    font-size: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
  }

  .success-panel h2 { margin: 0 0 8px; font-size: 21px; }
  .success-panel p { color: var(--ink-soft); font-size: 14px; margin: 0 auto; max-width: 420px; }

  footer.site {
    text-align: center;
    padding: 24px;
    font-size: 12px;
    color: var(--ink-soft);
  }

  @media (max-width: 640px) {
    .vf-grid { grid-template-columns: 1fr; }
    .submit-bar { flex-direction: column; align-items: stretch; text-align: center; }
    header.site { padding: 14px 18px; }
  }