/* ── CONTACT ── */
      .contact-layout {
        display: grid;
        grid-template-columns: 1fr 1.1fr;
        gap: 72px;
        align-items: start;
      }
      .contact-info .eyebrow {
        color: var(--accent);
      }
      .contact-promises {
        display: flex;
        flex-direction: column;
        gap: 14px;
        margin-top: 32px;
      }
      .promise-item {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 14px;
        color: var(--text-body);
      }
      .promise-icon {
        width: 36px;
        height: 36px;
        background: var(--gray-100);
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
        font-size: 16px;
      }
      .form-card {
        background: var(--off-white);
        border: 1px solid var(--gray-200);
        border-radius: var(--r-xl);
        padding: 38px 34px;
      }
      .form-grp {
        margin-bottom: 18px;
      }
      .form-lbl {
        display: flex;
        align-items: center;
        gap: 5px;
        font-size: 13px;
        font-weight: 700;
        color: var(--text-dark);
        margin-bottom: 7px;
      }
      .req {
        color: var(--red);
        font-size: 12px;
      }
      .opt {
        color: var(--gray-400);
        font-size: 11px;
        font-weight: 400;
      }
      .form-input,
      .form-sel,
      .form-area {
        width: 100%;
        padding: 11px 15px;
        background: #fff;
        border: 1.5px solid var(--gray-200);
        border-radius: var(--r-sm);
        font-family:
          "Pretendard",
          -apple-system,
          BlinkMacSystemFont,
          "Segoe UI",
          sans-serif;
        font-size: 14px;
        color: var(--text-dark);
        transition:
          border-color 0.18s,
          box-shadow 0.18s;
        outline: none;
        appearance: none;
      }
      .form-input::placeholder,
      .form-area::placeholder {
        color: var(--gray-300);
        font-size: 13px;
      }
      .form-input:focus,
      .form-sel:focus,
      .form-area:focus {
        border-color: var(--accent);
        box-shadow: 0 0 0 3px rgba(43, 126, 245, 0.1);
      }
      .form-input.err {
        border-color: var(--red);
      }
      .form-input.ok {
        border-color: #22c55e;
      }
      .err-msg {
        font-size: 11px;
        color: var(--red);
        margin-top: 4px;
        display: none;
      }
      .err-msg.show {
        display: block;
      }
      .form-sel {
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238A9BBE' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 14px center;
        padding-right: 36px;
        cursor: pointer;
      }
      .form-area {
        resize: vertical;
        min-height: 90px;
        line-height: 1.6;
      }
      .char-count {
        font-size: 11px;
        color: var(--gray-400);
        text-align: right;
        margin-top: 3px;
      }
      .form-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 14px;
      }
      .form-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 7px;
      }
      .form-tag {
        display: inline-flex;
        align-items: center;
        gap: 5px;
        padding: 6px 13px;
        background: #fff;
        border: 1.5px solid var(--gray-200);
        border-radius: 100px;
        font-size: 12px;
        font-weight: 600;
        color: var(--gray-600);
        cursor: pointer;
        transition: all 0.16s;
        user-select: none;
      }
      .form-tag:hover {
        border-color: var(--accent);
        color: var(--accent);
      }
      .form-tag.on {
        background: var(--accent);
        border-color: var(--accent);
        color: #fff;
      }
      .tag-ck {
        font-size: 9px;
        display: none;
      }
      .form-tag.on .tag-ck {
        display: inline;
      }
      .form-tags--auto {
        margin-top: 10px;
      }
      .form-tag--auto {
        background: #eef5ff;
        border-color: #c7dcff;
        color: #2b5ea8;
        cursor: default;
      }
      .form-tag--auto:hover {
        border-color: #c7dcff;
        color: #2b5ea8;
      }
      .form-tag--auto.on {
        background: #eef5ff;
        border-color: #c7dcff;
        color: #2b5ea8;
      }
      .btn-submit {
        width: 100%;
        padding: 15px;
        font-size: 16px;
        border-radius: var(--r-md);
        margin-top: 6px;
      }
      .form-hint {
        font-size: 11px;
        color: var(--gray-400);
        text-align: center;
        margin-top: 8px;
      }
      .form-hint.ok {
        color: var(--accent);
      }
      .submit-success {
        display: none;
        text-align: center;
        padding: 20px 0;
      }
      .submit-success.show {
        display: block;
      }
      .success-icon {
        font-size: 48px;
        margin-bottom: 14px;
      }
      .success-title {
        font-size: 20px;
        font-weight: 900;
        color: var(--text-dark);
        letter-spacing: -0.5px;
        margin-bottom: 8px;
      }
      .success-desc {
        font-size: 14px;
        color: var(--gray-600);
        line-height: 1.7;
        margin-bottom: 24px;
      }
      .success-actions {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 12px;
        flex-wrap: wrap;
      }
      .success-sub {
        font-size: 13px;
        color: var(--gray-600);
        margin-top: 20px;
      }

      /* ── CONTACT (CHART CONCEPT) ── */
      #contact {
        padding: 120px 0;
        background: #f7faff;
      }
      .contact-wrapper {
        max-width: 860px;
        margin: 0 auto;
        padding: 0 32px;
      }
      .contact-intro {
        text-align: center;
        margin-bottom: 36px;
      }
      .contact-intro .section-tag {
        font-size: 12px;
        font-weight: 800;
        letter-spacing: 0.08em;
        color: var(--accent);
      }
      .contact-intro h2 {
        font-size: clamp(30px, 4vw, 42px);
        font-weight: 900;
        color: var(--text-dark);
        letter-spacing: -1.2px;
        line-height: 1.2;
        margin-top: 10px;
      }
      .contact-intro h2 span {
        color: var(--accent);
      }
      .chart-card {
        background: #fff;
        border: 1px solid #e2e8f0;
        border-radius: 24px;
        overflow: hidden;
        box-shadow: 0 20px 60px rgba(15, 23, 42, 0.07);
      }
      .chart-card-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 20px 32px;
        background: #0f172a;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      }
      .chart-meta {
        display: flex;
        flex-direction: column;
        gap: 3px;
      }
      .chart-form-label {
        font-size: 10px;
        font-weight: 700;
        letter-spacing: 0.12em;
        color: rgba(255, 255, 255, 0.4);
        text-transform: uppercase;
      }
      .chart-form-title {
        font-size: 15px;
        font-weight: 700;
        color: rgba(255, 255, 255, 0.9);
      }
      .chart-doc-info {
        display: flex;
        flex-direction: column;
        align-items: flex-end;
        gap: 3px;
        font-family: "DM Mono", "Courier New", monospace;
      }
      .chart-doc-info .doc-date {
        font-size: 12px;
        color: rgba(255, 255, 255, 0.55);
      }
      .chart-doc-info .doc-no {
        font-size: 11px;
        color: rgba(255, 255, 255, 0.26);
        letter-spacing: 0.05em;
      }
      .chart-section {
        padding: 32px 36px;
        border-bottom: 1px solid #f1f5f9;
      }
      .chart-section:last-of-type {
        border-bottom: none;
      }
      .chart-section-label {
        font-size: 10px;
        font-weight: 700;
        letter-spacing: 0.12em;
        color: #94a3b8;
        text-transform: uppercase;
        margin-bottom: 18px;
        font-family: "DM Mono", "Courier New", monospace;
      }
      .field-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px 28px;
      }
      .field-group {
        display: flex;
        flex-direction: column;
        gap: 8px;
      }
      .field-group label {
        font-size: 12px;
        font-weight: 600;
        color: #64748b;
      }
      .field-group label .req {
        color: var(--accent);
        margin-left: 2px;
      }
      .field-group label .req.is-error {
        color: var(--red);
      }
      .chart-input,
      .chart-textarea {
        width: 100%;
        border: none;
        border-bottom: 1.5px solid #e2e8f0;
        border-radius: 0;
        background: transparent;
        font-size: 15px;
        color: var(--text-dark);
        padding: 6px 0;
        outline: none;
        font-family:
          "Pretendard",
          -apple-system,
          BlinkMacSystemFont,
          "Segoe UI",
          sans-serif;
        transition: border-color 0.2s;
      }
      .chart-input::placeholder,
      .chart-textarea::placeholder {
        color: #cbd5e1;
        font-size: 14px;
      }
      .chart-input:focus,
      .chart-textarea:focus {
        border-bottom-color: var(--accent);
        box-shadow: none;
      }
      .chart-input.err,
      .chart-textarea.err {
        border-bottom-color: var(--red);
      }
      .chart-input.ok,
      .chart-textarea.ok {
        border-bottom-color: #22c55e;
      }
      .chart-textarea {
        resize: none;
        min-height: 72px;
        line-height: 1.7;
      }
      .chip-group.form-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 8px 10px;
      }
      .chip-group .form-tag {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 7px 16px;
        border-radius: 99px;
        font-size: 13px;
        font-weight: 600;
        border: 1.5px solid #e2e8f0;
        color: #64748b;
        cursor: pointer;
        background: #fff;
        transition:
          border-color 0.15s ease,
          color 0.15s ease,
          background-color 0.15s ease;
        white-space: nowrap;
        line-height: 1.2;
      }
      .chip-group .form-tag:hover {
        border-color: var(--accent);
        color: var(--accent);
      }
      .chip-group .form-tag.on {
        background: #ebf5ff;
        color: var(--accent);
        border-color: var(--accent);
      }
      .chip-group .form-tag .tag-ck {
        display: none !important;
      }
      .chart-footer {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 20px 32px;
        background: #fafcff;
        border-top: 1px solid #e0e8f5;
        gap: 12px;
      }
      .sign-area {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 12px;
        color: #94a3b8;
        font-family: "DM Mono", "Courier New", monospace;
      }
      .sign-line {
        width: 100px;
        height: 1px;
        background: #cbd5e1;
      }
      .submit-requirements {
        font-size: 12px;
        font-weight: 700;
        color: var(--red);
        opacity: 0;
        visibility: hidden;
        transform: translateY(4px);
        transition:
          opacity 0.2s ease,
          transform 0.2s ease,
          visibility 0.2s;
      }
      .submit-requirements.show {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
      }
      .chart-submit-btn {
        background: var(--accent);
        color: #fff;
        border: none;
        padding: 14px 32px;
        border-radius: 12px;
        font-size: 15px;
        font-weight: 700;
        cursor: pointer;
        font-family:
          "Pretendard",
          -apple-system,
          BlinkMacSystemFont,
          "Segoe UI",
          sans-serif;
        letter-spacing: -0.3px;
        transition: all 0.2s ease;
        box-shadow: 0 8px 20px rgba(43, 126, 245, 0.2);
      }
      .chart-submit-btn:hover {
        background: var(--accent-dark);
        transform: translateY(-2px);
        box-shadow: 0 12px 28px rgba(43, 126, 245, 0.3);
      }
      .chart-submit-btn:disabled {
        opacity: 0.55;
        cursor: not-allowed;
        transform: none;
        box-shadow: none;
      }