/* ── Affiliation type cards ── */
        .affiliation-types {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin: 2.5rem 0 3rem;
        }

        .affiliation-card {
            position: relative;
            background: #fff;
            border-top: 4px solid transparent;
            padding: 2rem 1.5rem 1.5rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.07);
            cursor: pointer;
            transition: all 0.35s cubic-bezier(0.165, 0.84, 0.44, 1);
            border-radius: 2px;
            text-align: center;
        }

        .affiliation-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.12);
        }

        .affiliation-card.selected {
            border-top-color: var(--accent-color);
            background: #fff8f8;
            box-shadow: 0 18px 40px rgba(211, 47, 47, 0.12);
        }

        .affiliation-card input[type="radio"] {
            position: absolute;
            opacity: 0;
            width: 0;
            height: 0;
        }

        .affiliation-card .card-icon {
            display: flex;
            justify-content: center;
            align-items: center;
            width: 76px;
            height: 76px;
            border-radius: 50%;
            background: rgba(211, 47, 47, 0.08);
            margin: 0 auto 1.5rem;
            color: var(--accent-color);
            transition: all 0.35s ease;
        }

        .affiliation-card.selected .card-icon {
            background: var(--accent-color);
            color: #fff;
            transform: scale(1.05);
            box-shadow: 0 10px 25px rgba(211, 47, 47, 0.3);
        }

        .affiliation-card h3 {
            font-size: 1.3rem;
            margin-bottom: 0.75rem;
            color: var(--primary-color);
        }

        .affiliation-card p {
            font-size: 0.92rem;
            color: #666;
            line-height: 1.6;
            margin-bottom: 0;
        }

        .affiliation-card .selected-badge {
            display: none;
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--accent-color);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 1px;
            padding: 3px 8px;
            text-transform: uppercase;
        }

        .affiliation-card.selected .selected-badge {
            display: block;
        }

        /* ── Join-Us form section ── */
        .join-us-section {
            padding: 4rem 0 5rem;
            background: #f9f9f9;
        }

        .join-us-inner {
            max-width: 950px;
            margin: 0 auto;
        }

        .join-us-info {
            text-align: center;
            margin-bottom: 2.5rem;
        }

        .join-us-info h2 {
            font-size: 2.2rem;
            margin-bottom: 1.2rem;
        }

        .join-us-info p {
            color: #555;
            font-size: 1.05rem;
            margin-bottom: 1.5rem;
            line-height: 1.8;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .join-us-info .divider {
            width: 50px;
            height: 4px;
            background: var(--accent-color);
            margin: 0 auto 2rem;
        }

        .benefit-list {
            display: none;
        }

        /* ── Form ── */
        .join-form-wrapper {
            background: #fff;
            padding: 3rem;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.07);
            border-radius: 4px;
        }

        .join-form-wrapper h3.main-title {
            font-size: 1.8rem;
            margin-bottom: 0.5rem;
            text-align: center;
        }

        .join-form-wrapper .form-tagline {
            font-size: 0.95rem;
            color: #888;
            margin-bottom: 2.5rem;
            text-align: center;
            font-family: var(--font-body);
        }

        .section-title {
            font-size: 1.15rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            font-family: var(--font-heading);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .section-divider {
            border: 0;
            height: 1px;
            background: #eaeaea;
            margin: 2.5rem 0;
        }

        .form-group {
            margin-bottom: 1.4rem;
            display: flex;
            flex-direction: column;
        }

        .form-group label {
            display: block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.2px;
            color: #444;
            margin-bottom: 0.5rem;
            font-family: var(--font-heading);
        }

        .form-group label .required-star {
            color: var(--accent-color);
            margin-left: 2px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 0.85rem 1rem;
            border: 1px solid #ddd;
            background: #fafafa;
            font-family: var(--font-body);
            font-size: 1rem;
            color: var(--primary-color);
            transition: all 0.3s ease;
            border-radius: 2px;
            outline: none;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--primary-color);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(10, 10, 10, 0.06);
        }

        .form-group input.valid-field {
            border-color: #4caf50;
            background: #f9fff9;
        }

        .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
            align-items: end;
        }

        .form-row-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 1rem;
            align-items: end;
        }

        .field-hint {
            font-size: 0.78rem;
            color: #999;
            margin-top: 4px;
        }

        /* Submit button */
        .btn-submit {
            display: inline-block;
            width: 100%;
            padding: 1rem 2rem;
            background: var(--accent-color);
            color: #fff;
            border: 2px solid var(--accent-color);
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            cursor: pointer;
            transition: all 0.35s cubic-bezier(0.165, 0.84, 0.44, 1);
            opacity: 1;
            margin-top: 0.5rem;
            border-radius: 2px;
        }

        /* Not-ready state: styled as disabled but still receives clicks */
        .btn-submit.btn-not-ready {
            cursor: not-allowed;
            opacity: 0.45;
        }

        /* Validation checklist */
        .validation-checklist {
            background: rgba(229, 57, 53, 0.08);
            border: 1px solid rgba(229, 57, 53, 0.35);
            border-radius: 10px;
            padding: 14px 18px;
            margin-bottom: 16px;
            font-size: 0.875rem;
            color: #c62828;
            line-height: 1.7;
        }
        .validation-checklist strong {
            display: block;
            margin-bottom: 6px;
        }
        .validation-checklist ul {
            margin: 0;
            padding-left: 18px;
        }
        .validation-checklist a {
            color: #c62828;
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        @keyframes checklistShake {
            0%,100% { transform: translateX(0); }
            20%      { transform: translateX(-6px); }
            40%      { transform: translateX(6px); }
            60%      { transform: translateX(-4px); }
            80%      { transform: translateX(4px); }
        }
        .validation-checklist.shake {
            animation: checklistShake 0.4s ease;
        }

        .btn-submit.enabled {
            cursor: pointer;
            opacity: 1;
        }

        .btn-submit.enabled:hover {
            background: #b71c1c;
            border-color: #b71c1c;
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(211, 47, 47, 0.3);
        }

        .form-required-note {
            font-size: 0.78rem;
            color: #aaa;
            margin-bottom: 1.5rem;
        }

        /* Dynamic social links */
        .social-link-row {
            position: relative;
            margin-bottom: 1rem;
            padding: 1rem;
            background: #fdfdfd;
            border: 1px dashed #ddd;
            border-radius: 4px;
        }

        .btn-add-more {
            display: inline-block;
            background: #eee;
            color: #333;
            border: 1px solid #ccc;
            padding: 0.5rem 1rem;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            border-radius: 2px;
            margin-bottom: 1.5rem;
            transition: all 0.2s;
        }

        .btn-add-more:hover {
            background: #e0e0e0;
            border-color: #bbb;
        }

        .btn-remove-row {
            position: absolute;
            top: 10px;
            right: 10px;
            background: #fff;
            color: var(--accent-color);
            border: 1px solid var(--accent-color);
            width: 24px;
            height: 24px;
            line-height: 22px;
            text-align: center;
            border-radius: 50%;
            cursor: pointer;
            font-size: 1.2rem;
            font-weight: bold;
            padding: 0;
        }

        .btn-remove-row:hover {
            background: var(--accent-color);
            color: #fff;
        }

        /* ── Page header banner ── */
        .page-header-affiliate {
            background: linear-gradient(135deg, #0a0a0a 0%, #1a0000 60%, #2d0000 100%);
            padding: 5rem 0 3.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .page-header-affiliate::before {
            content: '';
            position: absolute;
            inset: 0;
            background: repeating-linear-gradient(45deg,
                    transparent,
                    transparent 40px,
                    rgba(211, 47, 47, 0.03) 40px,
                    rgba(211, 47, 47, 0.03) 80px);
        }

        .page-header-affiliate h1 {
            color: #fff;
            font-size: 3rem;
            position: relative;
            margin-bottom: 0.75rem;
        }

        .page-header-affiliate p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 1.1rem;
            max-width: 550px;
            margin: 0 auto;
            position: relative;
        }

        .page-header-affiliate .accent-line {
            width: 55px;
            height: 4px;
            background: var(--accent-color);
            margin: 1.25rem auto 0;
            position: relative;
        }

        /* ── Responsive ── */
        @media (max-width: 900px) {
            .affiliation-types {
                grid-template-columns: 1fr;
                gap: 1rem;
            }

            .join-us-inner {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }

            .form-row, .form-row-3 {
                grid-template-columns: 1fr;
            }

            .page-header-affiliate h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 480px) {
            .join-form-wrapper {
                padding: 1.5rem;
            }
        }