.b2c-order {
      --primary: #FF6B00;
      --primary-gradient: linear-gradient(135deg, #FF6B00 0%, #FF8533 100%);
      --primary-hover: #E55C00;
      --primary-subtle: #FFF4EB;
      --primary-border: #FFD5BE;
      --primary-glow: rgba(255, 107, 0, 0.25);

      --navy-dark: #0A0E1A;
      --navy-card: #0F172A;
      --navy-surface: #1E293B;

      --slate-50: #F8FAFC;
      --slate-100: #F1F5F9;
      --slate-200: #E2E8F0;
      --slate-300: #CBD5E1;
      --slate-400: #94A3B8;
      --slate-500: #64748B;
      --slate-600: #475569;
      --slate-700: #334155;
      --slate-800: #1E293B;
      --slate-900: #0F172A;

      --emerald: #10B981;
      --emerald-bg: #ECFDF5;
      --emerald-border: #A7F3D0;
      --rose: #F43F5E;
      --rose-bg: #FFF1F2;
      --white: #FFFFFF;

      --radius-xs: 8px;
      --radius-sm: 12px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-full: 9999px;

      --shadow-premium: 0 20px 40px -15px rgba(15, 23, 42, 0.07), 0 0 1px 1px rgba(226, 232, 240, 0.9);
      --shadow-float: 0 8px 20px -4px rgba(15, 23, 42, 0.06);
      --shadow-active: 0 8px 24px -4px rgba(255, 107, 0, 0.25);

      --transition-fast: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .b2c-order.studio-wrapper {
      max-width: 1160px;
      width: 100%;
      margin: 1.4rem auto 3rem;
      padding: 0 1.5rem;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: flex-start;
    }

    
    .b2c-order .center-hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0.85rem;
      width: 100%;
    }
    .b2c-order .center-hero-card {
      border: 2px solid var(--slate-200);
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 0.95rem 1.25rem;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 0.95rem;
      transition: var(--transition-fast);
      user-select: none;
      position: relative;
      box-shadow: var(--shadow-float);
    }
    .b2c-order .center-hero-card:hover {
      border-color: var(--slate-300);
      transform: translateY(-2px);
      box-shadow: 0 12px 28px -5px rgba(15, 23, 42, 0.1);
    }
    .b2c-order .center-hero-card.active {
      border-color: var(--primary);
      background: #FFFDFB;
      box-shadow: 0 12px 28px -5px rgba(255, 100, 34, 0.2);
    }

    
    .b2c-order .hero-flag-icon-box {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .b2c-order .flag-coin-stack {
      display: flex;
      align-items: center;
      position: relative;
    }
    .b2c-order .flag-coin {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      border: 1px solid rgba(0, 0, 0, 0.08);
      box-shadow: 0 3px 8px rgba(15, 23, 42, 0.1);
      object-fit: cover;
      display: block;
      background: #fff;
    }
    .b2c-order .flag-coin.overlap {
      margin-left: -14px;
      position: relative;
      z-index: 2;
      border: 2px solid var(--white);
    }

    
    .b2c-order .hero-center-info {
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .b2c-order .hero-center-top-line {
      display: flex;
      align-items: center;
      gap: 0.4rem;
    }
    .b2c-order .hero-center-name {
      font-size: 1.12rem;
      font-weight: 900;
      color: var(--slate-800);
      letter-spacing: -0.4px;
    }
    .b2c-order .center-hero-card.active .hero-center-name {
      color: var(--primary);
    }
    .b2c-order .hero-center-sub {
      font-size: 0.78rem;
      color: var(--slate-500);
      margin-top: 1px;
      font-weight: 600;
      white-space: nowrap;
    }
    .b2c-order .center-hero-card.active .hero-center-sub {
      color: var(--slate-600);
    }

    .b2c-order .hero-center-badge {
      font-size: 0.68rem;
      font-weight: 800;
      padding: 2px 7px;
      border-radius: 6px;
      background: var(--slate-100);
      color: var(--slate-500);
      letter-spacing: -0.2px;
      white-space: nowrap;
    }
    .b2c-order .center-hero-card.active .hero-center-badge {
      background: var(--primary-gradient);
      color: var(--white);
      box-shadow: 0 2px 6px var(--primary-glow);
    }

    
    .b2c-order .studio-grid {
      display: grid;
      grid-template-columns: 1.35fr 1fr;
      gap: 1.6rem;
      align-items: stretch;
    }

    
    .b2c-order .studio-left-col {
      display: flex;
      flex-direction: column;
      gap: 1.1rem;
    }

    
    .b2c-order .config-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 1.8rem 2rem;
      box-shadow: var(--shadow-premium);
      display: flex;
      flex-direction: column;
      gap: 1.35rem; 
      border: 1px solid var(--slate-200);
    }

    .b2c-order .config-step {
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
      position: relative;
    }

    
    .b2c-order .config-step + .config-step {
      padding-top: 1.15rem;
      border-top: 1px solid #F1F5F9;
    }

    .b2c-order .step-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 0.1rem;
    }
    .b2c-order .step-title {
      font-size: 0.96rem;
      font-weight: 800;
      color: var(--navy-dark);
      display: flex;
      align-items: center;
      gap: 0.55rem;
      letter-spacing: -0.3px;
    }
    .b2c-order .step-number {
      width: 24px;
      height: 24px;
      border-radius: 7px;
      background: #FFF4EB;
      color: var(--primary);
      border: 1px solid rgba(255, 107, 0, 0.22);
      font-size: 0.8rem;
      font-weight: 900;
      font-family: 'Outfit', sans-serif;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 1px 3px rgba(255, 107, 0, 0.08);
      flex-shrink: 0;
    }
    .b2c-order .step-hint {
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--slate-400);
      display: flex;
      align-items: center;
      gap: 4px;
    }

    
    .b2c-order .mode-cards-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0.75rem;
    }
    .b2c-order .mode-card {
      border: 1.5px solid var(--slate-200);
      border-radius: var(--radius-md);
      padding: 0.9rem 1rem;
      cursor: pointer;
      background: var(--white);
      transition: var(--transition-fast);
      display: flex;
      align-items: center;
      gap: 0.85rem;
      user-select: none;
    }
    .b2c-order .mode-card:hover {
      border-color: var(--slate-300);
      background: var(--slate-50);
      transform: translateY(-2px);
    }
    .b2c-order .mode-card.selected {
      border-color: var(--primary);
      background: #FFFBF8;
      box-shadow: var(--shadow-active);
    }
    .b2c-order .mode-icon-circle {
      width: 42px;
      height: 42px;
      border-radius: var(--radius-sm);
      background: var(--slate-100);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      color: var(--slate-600);
      transition: var(--transition-fast);
      flex-shrink: 0;
    }
    .b2c-order .mode-card.selected .mode-icon-circle {
      background: var(--primary-gradient);
      color: var(--white);
      box-shadow: 0 4px 12px var(--primary-glow);
    }
    .b2c-order .mode-text .title {
      font-size: 0.94rem;
      font-weight: 800;
      color: var(--slate-800);
      display: flex;
      align-items: center;
      gap: 0.3rem;
    }
    .b2c-order .mode-card.selected .mode-text .title {
      color: var(--primary);
    }
    .b2c-order .mode-text .desc {
      font-size: 0.75rem;
      color: var(--slate-500);
      margin-top: 1px;
      font-weight: 500;
    }

    
    .b2c-order .course-chips-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 0.5rem;
    }
    .b2c-order .course-chip-btn {
      border: 1.5px solid var(--slate-200);
      border-radius: var(--radius-sm);
      padding: 0.75rem 0.2rem 0.65rem;
      text-align: center;
      cursor: pointer;
      background: var(--white);
      transition: var(--transition-fast);
      user-select: none;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 3px;
    }
    .b2c-order .course-chip-btn .book-icon-badge {
      width: 32px;
      height: 32px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 3px;
      transition: var(--transition-fast);
    }
    .b2c-order .course-chip-btn .book-icon-badge img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      filter: drop-shadow(0 2px 5px rgba(0, 0, 0, 0.08));
      transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    }
    .b2c-order .course-chip-btn:hover .book-icon-badge img {
      transform: translateY(-2px) scale(1.1);
      filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.15));
    }
    .b2c-order .course-chip-btn.selected .book-icon-badge img {
      transform: translateY(-2px) scale(1.15);
      filter: drop-shadow(0 4px 10px rgba(255, 100, 34, 0.25));
    }

    .b2c-order .course-chip-btn .book-name {
      font-size: 0.84rem;
      font-weight: 800;
      color: var(--slate-800);
      letter-spacing: -0.3px;
    }
    .b2c-order .course-chip-btn .book-sub {
      font-size: 0.68rem;
      font-weight: 600;
      color: var(--slate-500);
    }
    .b2c-order .course-chip-btn:hover {
      border-color: var(--slate-300);
      background: var(--slate-50);
      transform: translateY(-1px);
    }
    .b2c-order .course-chip-btn.selected {
      border-color: var(--primary);
      background: #FFFBF8;
      box-shadow: 0 4px 14px rgba(255, 100, 34, 0.18);
    }
    .b2c-order .course-chip-btn.selected .book-icon-badge {
      transform: scale(1.15);
    }
    .b2c-order .course-chip-btn.selected .book-name {
      color: var(--primary);
    }
    .b2c-order .course-chip-btn.selected .book-sub {
      color: var(--primary);
      font-weight: 700;
    }

    
    .b2c-order .segment-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 0.55rem;
    }
    .b2c-order .segment-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0.45rem;
    }
    .b2c-order .seg-pill-btn {
      border: 1.5px solid var(--slate-200);
      border-radius: var(--radius-sm);
      padding: 0.7rem 0.4rem;
      text-align: center;
      cursor: pointer;
      background: var(--white);
      transition: var(--transition-fast);
      user-select: none;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }
    .b2c-order .seg-pill-btn:hover {
      border-color: var(--slate-300);
      background: var(--slate-50);
    }
    .b2c-order .seg-pill-btn.selected {
      border-color: var(--primary);
      background: #FFFBF8;
      box-shadow: 0 2px 10px rgba(255, 100, 34, 0.12);
    }
    .b2c-order .seg-pill-btn .main-label {
      font-size: 0.92rem;
      font-weight: 800;
      color: var(--slate-800);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.3rem;
    }
    .b2c-order .seg-pill-btn.selected .main-label {
      color: var(--primary);
    }
    .b2c-order .seg-pill-btn .sub-label {
      font-size: 0.71rem;
      color: var(--slate-400);
      margin-top: 2px;
      font-weight: 600;
    }
    .b2c-order .seg-pill-btn.selected .sub-label {
      color: var(--primary);
      font-weight: 700;
    }
    .b2c-order .micro-star-badge {
      font-size: 0.65rem;
      font-weight: 800;
      background: var(--primary-subtle);
      color: var(--primary);
      padding: 1px 5px;
      border-radius: 6px;
      border: 1px solid var(--primary-border);
    }

    
    .b2c-order .period-cards-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0.55rem;
    }
    .b2c-order .period-tier-card {
      border: 1.5px solid var(--slate-200);
      border-radius: var(--radius-md);
      padding: 1.05rem 0.5rem 0.9rem;
      text-align: center;
      cursor: pointer;
      background: var(--white);
      transition: var(--transition-fast);
      position: relative;
      user-select: none;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .b2c-order .period-tier-card:hover {
      border-color: var(--slate-300);
      transform: translateY(-2px);
      box-shadow: var(--shadow-float);
    }
    .b2c-order .period-tier-card.selected {
      border-color: var(--primary);
      background: #FFFBF8;
      box-shadow: var(--shadow-active);
    }
    
    
    .b2c-order .tier-badge-discount {
      position: absolute;
      top: -10px;
      left: 50%;
      transform: translateX(-50%);
      font-size: 0.65rem;
      font-weight: 900;
      padding: 2px 9px;
      border-radius: var(--radius-full);
      white-space: nowrap;
      letter-spacing: -0.2px;
      background: linear-gradient(135deg, #FF6B00 0%, #FF8533 100%);
      color: var(--white);
      box-shadow: 0 2px 6px rgba(255, 107, 0, 0.35);
    }
    .b2c-order .tier-badge-discount.tier-badge-max {
      background: linear-gradient(135deg, #EF4444 0%, #F97316 100%);
      box-shadow: 0 2px 8px rgba(239, 68, 68, 0.4);
    }

    .b2c-order .period-tier-name {
      font-size: 0.95rem;
      font-weight: 800;
      color: var(--slate-800);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 3px;
    }
    .b2c-order .period-tier-name .period-weeks {
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--slate-400);
    }
    .b2c-order .period-tier-card.selected .period-tier-name {
      color: var(--primary);
    }
    .b2c-order .period-tier-card.selected .period-tier-name .period-weeks {
      color: var(--primary);
      opacity: 0.85;
    }
    .b2c-order .period-tier-price-box {
      margin: 0.4rem 0 0.15rem;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }
    .b2c-order .period-tier-strike {
      font-size: 0.76rem;
      text-decoration: line-through;
      color: var(--slate-400);
      font-weight: 600;
      line-height: 1.1;
    }
    .b2c-order .period-tier-price {
      font-family: 'Outfit', sans-serif;
      font-size: 1.15rem;
      font-weight: 900;
      color: var(--navy-dark);
      letter-spacing: -0.4px;
      line-height: 1.2;
    }
    .b2c-order .period-tier-card.selected .period-tier-price {
      color: var(--primary);
    }
    .b2c-order .period-tier-save {
      margin-top: 0.45rem;
      padding-top: 0.35rem;
      border-top: 1px dashed var(--slate-200);
      font-size: 0.72rem;
      font-weight: 700;
      color: var(--slate-500);
    }
    .b2c-order .period-tier-card.selected .period-tier-save {
      color: var(--primary);
      border-top-color: var(--primary-border);
    }

    
    .b2c-order .summary-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 1.8rem 2rem;
      box-shadow: var(--shadow-premium);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      height: 100%;
      border: 1px solid var(--slate-200);
    }

    
    .b2c-order .summary-ticket-header {
      background: linear-gradient(145deg, #0F172A 0%, #1E293B 100%);
      color: var(--white);
      border-radius: var(--radius-md);
      padding: 1.05rem 1.15rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      box-shadow: 0 4px 16px rgba(15, 23, 42, 0.12);
    }
    .b2c-order .ticket-plan-title {
      font-size: 0.98rem;
      font-weight: 800;
      letter-spacing: -0.3px;
    }
    .b2c-order .ticket-plan-sub {
      font-size: 0.76rem;
      color: var(--slate-400);
      margin-top: 2px;
      font-weight: 500;
    }
    .b2c-order .ticket-center-tag {
      font-size: 0.72rem;
      font-weight: 800;
      background: rgba(255, 100, 34, 0.2);
      color: #FF8533;
      border: 1px solid rgba(255, 100, 34, 0.35);
      padding: 4px 9px;
      border-radius: var(--radius-full);
      flex-shrink: 0;
    }

    
    .b2c-order .promo-code-card {
      margin: 0.85rem 0;
    }
    .b2c-order .promo-label {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.76rem;
      font-weight: 700;
      color: var(--slate-600);
      margin-bottom: 0.35rem;
    }
    .b2c-order .promo-input-group {
      display: flex;
      gap: 0.45rem;
    }
    .b2c-order .promo-input-group input {
      flex: 1;
      padding: 0.65rem 0.85rem;
      border: 1.5px solid var(--slate-200);
      border-radius: var(--radius-sm);
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--navy-dark);
      background: var(--slate-50);
      outline: none;
      transition: var(--transition-fast);
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .b2c-order .promo-input-group input:focus {
      border-color: var(--primary);
      background: var(--white);
      box-shadow: 0 0 0 3px rgba(255, 100, 34, 0.12);
    }
    .b2c-order .btn-apply-promo {
      padding: 0.65rem 1.1rem;
      background: var(--slate-900);
      color: var(--white);
      border: none;
      border-radius: var(--radius-sm);
      font-size: 0.84rem;
      font-weight: 800;
      cursor: pointer;
      transition: var(--transition-fast);
      white-space: nowrap;
    }
    .b2c-order .btn-apply-promo:hover {
      background: var(--primary);
    }
    .b2c-order .promo-applied-badge {
      display: none;
      align-items: center;
      gap: 4px;
      font-size: 0.74rem;
      font-weight: 700;
      color: var(--emerald);
      margin-top: 0.35rem;
    }

    
    .b2c-order .coupon-select-card {
      margin-bottom: 0.85rem;
    }
    .b2c-order .coupon-label-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.76rem;
      font-weight: 700;
      color: var(--slate-600);
      margin-bottom: 0.35rem;
    }
    .b2c-order .coupon-count-tag {
      font-size: 0.72rem;
      color: var(--slate-500);
    }
    .b2c-order .coupon-count-tag strong {
      color: var(--slate-700);
      font-weight: 800;
    }
    .b2c-order .coupon-select-wrap {
      position: relative;
      width: 100%;
    }
    .b2c-order .custom-coupon-select {
      width: 100%;
      padding: 0.62rem 2.2rem 0.62rem 0.85rem;
      border: 1.5px solid var(--slate-200);
      border-radius: var(--radius-sm);
      font-size: 0.84rem;
      font-weight: 600;
      color: var(--slate-500);
      background: var(--slate-50);
      outline: none;
      transition: var(--transition-fast);
      appearance: none;
      -webkit-appearance: none;
      cursor: pointer;
    }
    .b2c-order .custom-coupon-select:focus {
      border-color: var(--primary);
      background: var(--white);
      box-shadow: 0 0 0 3px rgba(255, 100, 34, 0.12);
    }
    .b2c-order .coupon-select-arrow {
      position: absolute;
      right: 0.85rem;
      top: 50%;
      transform: translateY(-50%);
      font-size: 0.72rem;
      color: var(--slate-400);
      pointer-events: none;
    }

    
    .b2c-order .points-usage-card {
      margin-bottom: 0.85rem;
    }
    .b2c-order .points-label-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.76rem;
      font-weight: 700;
      color: var(--slate-600);
      margin-bottom: 0.35rem;
    }
    .b2c-order .points-balance-tag {
      font-size: 0.72rem;
      color: var(--slate-500);
    }
    .b2c-order .points-balance-tag strong {
      color: var(--primary);
      font-weight: 800;
    }
    .b2c-order .points-input-group {
      display: flex;
      gap: 0.45rem;
    }
    .b2c-order .points-input-group input {
      flex: 1;
      padding: 0.62rem 0.85rem;
      border: 1.5px solid var(--slate-200);
      border-radius: var(--radius-sm);
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--navy-dark);
      background: var(--slate-50);
      outline: none;
      transition: var(--transition-fast);
    }
    .b2c-order .points-input-group input:focus {
      border-color: var(--primary);
      background: var(--white);
      box-shadow: 0 0 0 3px rgba(255, 100, 34, 0.12);
    }
    .b2c-order .btn-points-action {
      padding: 0.62rem 0.95rem;
      background: var(--slate-100);
      color: var(--slate-700);
      border: 1.5px solid var(--slate-200);
      border-radius: var(--radius-sm);
      font-size: 0.8rem;
      font-weight: 800;
      cursor: pointer;
      transition: var(--transition-fast);
      white-space: nowrap;
    }
    .b2c-order .btn-points-action:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: var(--primary-subtle);
    }
    .b2c-order .btn-points-action.active {
      background: var(--primary);
      color: var(--white);
      border-color: var(--primary);
    }

    
    .b2c-order .breakdown-list {
      display: flex;
      flex-direction: column;
      gap: 0.45rem;
      padding-top: 0.2rem;
      border-top: 1px dashed var(--slate-200);
    }
    .b2c-order .breakdown-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
      color: var(--slate-600);
      font-weight: 600;
    }
    .b2c-order .breakdown-row.discount {
      color: var(--rose);
      font-weight: 700;
    }
    .b2c-order .breakdown-row.coupon {
      color: var(--emerald);
      font-weight: 700;
    }
    .b2c-order .discount-pill {
      font-size: 0.68rem;
      background: var(--rose-bg);
      color: var(--rose);
      padding: 1px 6px;
      border-radius: 4px;
      margin-left: 4px;
    }
    .b2c-order .coupon-pill {
      font-size: 0.68rem;
      background: var(--emerald-bg);
      color: var(--emerald);
      padding: 1px 6px;
      border-radius: 4px;
      margin-left: 4px;
    }
    .b2c-order .discount-notice-note {
      font-size: 0.71rem;
      color: var(--slate-400);
      font-weight: 500;
      display: flex;
      align-items: center;
      gap: 4px;
      margin-top: 1px;
      margin-bottom: 2px;
      line-height: 1.35;
    }
    .b2c-order .discount-notice-note i {
      font-size: 0.68rem;
      color: #94A3B8;
    }

    
    .b2c-order .total-hero-box {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      padding-top: 0.85rem;
      border-top: 1.5px solid var(--slate-200);
      margin: 0.8rem 0;
    }
    .b2c-order .total-title-area .title {
      font-size: 0.94rem;
      font-weight: 800;
      color: var(--navy-dark);
    }
    .b2c-order .total-title-area .sub {
      font-size: 0.76rem;
      font-weight: 700;
      color: var(--slate-400);
      margin-top: 2px;
    }
    .b2c-order .total-number-area {
      font-family: 'Outfit', sans-serif;
      font-size: 2.05rem;
      font-weight: 900;
      color: var(--primary);
      letter-spacing: -0.6px;
      line-height: 1;
    }

    
    .b2c-order .payment-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 0.6rem;
      margin-bottom: 0.85rem;
    }
    .b2c-order .pay-btn {
      border: 1.5px solid var(--slate-200);
      border-radius: var(--radius-sm);
      padding: 0.75rem 0.5rem;
      text-align: center;
      cursor: pointer;
      background: var(--white);
      font-size: 0.86rem;
      font-weight: 800;
      color: var(--slate-700);
      transition: var(--transition-fast);
      user-select: none;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }
    .b2c-order .pay-btn:hover {
      border-color: var(--slate-400);
      background: var(--slate-50);
    }
    .b2c-order .pay-btn.selected {
      border-color: var(--primary);
      background: #FFFBF8;
      color: var(--primary);
      box-shadow: 0 2px 10px rgba(255, 107, 0, 0.18);
    }
    .b2c-order .pay-btn i { font-size: 1.05rem; }

    
    .b2c-order .btn-submit-pay {
      width: 100%;
      padding: 1rem;
      background: var(--primary-gradient);
      color: var(--white);
      border: none;
      border-radius: var(--radius-md);
      font-size: 1.08rem;
      font-weight: 900;
      cursor: pointer;
      transition: var(--transition-fast);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.45rem;
      box-shadow: var(--shadow-active);
      letter-spacing: -0.3px;
    }
    .b2c-order .btn-submit-pay:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 28px -4px rgba(255, 100, 34, 0.4);
    }
    .b2c-order .btn-submit-pay:active {
      transform: translateY(0);
    }

    
    .b2c-order .trust-guarantee-row {
      display: flex;
      justify-content: center;
      gap: 1.1rem;
      font-size: 0.73rem;
      color: var(--slate-400);
      font-weight: 600;
      margin-top: 0.75rem;
    }
    .b2c-order .trust-guarantee-row span {
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .b2c-order .trust-guarantee-row i { color: var(--emerald); }

    
    .b2c-order .app-footer {
      background: var(--white);
      border-top: 1px solid var(--slate-200);
      padding: 1.1rem 0;
      font-size: 0.76rem;
      color: var(--slate-400);
      margin-top: auto;
      width: 100%;
    }
    .b2c-order .footer-inner {
      max-width: 1160px;
      width: 100%;
      margin: 0 auto;
      padding: 0 1.5rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .b2c-order .app-footer a {
      color: var(--slate-600);
      text-decoration: none;
    }
    .b2c-order .app-footer a:hover {
      color: var(--primary);
    }

/* Integration with the shared B2C header and native form controls. */
.b2c-order ~ #stickyBar { display: none; }
.b2c-order .order-complete { max-width: 760px; width: 100%; margin: 20px auto; }
.b2c-order #promoBenefit { color: var(--emerald); font-size: 12px; }
.b2c-order [hidden] { display: none !important; }
.b2c-order { color: var(--slate-800); line-height: 1.55; }
.b2c-order *, .b2c-order *::before, .b2c-order *::after { box-sizing: border-box; }
.b2c-order button, .b2c-order input, .b2c-order select, .b2c-order textarea { font: inherit; }
.b2c-order button { text-align: left; }
.b2c-order button:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.b2c-order :focus-visible { outline: 3px solid #2563eb; outline-offset: 3px; }
.b2c-order .order-heading { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin: 10px 0 28px; }
.b2c-order .order-heading h1 { font-size: clamp(24px, 3vw, 32px); margin: 4px 0 8px; letter-spacing: -1px; }
.b2c-order .order-heading p { margin: 0; }
.b2c-order .order-eyebrow { color: var(--primary); font-size: 11px; font-weight: 800; letter-spacing: 2px; }
.b2c-order .order-progress, .b2c-order .order-note { color: var(--slate-500); font-size: 13px; }
.b2c-order .order-progress { white-space: nowrap; }
.b2c-order .order-progress b { padding: 0 8px; color: var(--primary); }
.b2c-order .studio-left-col, .b2c-order .summary-card { min-width: 0; }
.b2c-order .summary-card { gap: 22px; justify-content: flex-start; height: auto; align-self: start; position: sticky; top: 100px; }
.b2c-order .mode-text .title, .b2c-order .mode-text .desc, .b2c-order .hero-center-sub, .b2c-order .book-name, .b2c-order .period-tier-name, .b2c-order .period-tier-price, .b2c-order .period-tier-save { display: block; }
.b2c-order .book-icon-badge { font-size: 28px; }
.b2c-order .mode-card, .b2c-order .course-chip-btn, .b2c-order .seg-pill-btn, .b2c-order .period-tier-card { font-family: inherit; }
.b2c-order .seg-pill-btn, .b2c-order .course-chip-btn, .b2c-order .period-tier-card { text-align: center; }
.b2c-order .btn-submit-pay { justify-content: center; text-align: center; }
.b2c-order .order-label, .b2c-order legend { font-size: 13px; font-weight: 700; }
.b2c-order .order-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.b2c-order .order-fields label { display: flex; flex-direction: column; gap: 8px; font-size: 13px; font-weight: 700; }
.b2c-order input:not([type=hidden]):not([type=radio]):not([type=checkbox]), .b2c-order select, .b2c-order textarea { border: 1px solid var(--slate-200); border-radius: 10px; padding: 12px; min-width: 0; background: white; color: var(--slate-800); width: 100%; }
.b2c-order input[type=checkbox], .b2c-order input[type=radio] { accent-color: var(--primary); width: 17px; height: 17px; flex-shrink: 0; }
.b2c-order fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
.b2c-order legend { margin-bottom: 8px; }
.b2c-order .order-phone > div { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.b2c-order .order-back { color: var(--primary); font-weight: 700; font-size: 14px; }
.b2c-order .pay-btn { display: flex; align-items: center; justify-content: center; gap: 8px; }
.b2c-order .pay-btn { position: relative; min-height: 66px; border-radius: 18px; gap: 10px; font-size: 17px; }
.b2c-order .pay-btn input[type=radio] { position: absolute; width: 1px; height: 1px; margin: 0; opacity: 0; }
.b2c-order .pay-btn svg { width: 26px; height: 26px; flex-shrink: 0; }
.b2c-order .pay-btn .payment-card-icon { color: #ff7430; }
.b2c-order .pay-btn .payment-bank-icon { color: #405cf5; }
.b2c-order .pay-btn:has(input:checked) { border-color: var(--primary); background: #fffdfb; color: #ff7430; box-shadow: 0 4px 14px rgba(255,107,0,.12); }
.b2c-order .pay-btn:has(input:focus-visible) { outline: 3px solid #2563eb; outline-offset: 3px; }
.b2c-order .pay-btn:has(input:disabled) { opacity: .45; cursor: not-allowed; }
.b2c-order select, .b2c-order .custom-coupon-select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 42px;
  background-color: #f8fafc;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-position: right 14px center;
  background-repeat: no-repeat;
  background-size: 18px;
  cursor: pointer;
}
.b2c-order select:disabled { cursor: not-allowed; opacity: .6; }
.b2c-order .table-01 { width: 100%; border-collapse: collapse; font-size: 14px; }
.b2c-order .table-01 th, .b2c-order .table-01 td { padding: 16px 12px; border-bottom: 1px solid var(--slate-200); text-align: center; }
.b2c-order .table-01 th { background: var(--slate-50); }
.b2c-order .table-01 a { color: var(--primary); font-weight: 700; }
.b2c-order .payment-history { overflow-x: auto; }
@media (max-width: 980px) {
  .b2c-order .studio-grid { grid-template-columns: 1fr; }
  .b2c-order .summary-card { position: static; }
  .b2c-order .order-heading { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 600px) {
  .b2c-order.studio-wrapper { padding: 0 16px; }
  .b2c-order .center-hero-grid, .b2c-order .mode-cards-grid { grid-template-columns: 1fr; }
  .b2c-order .course-chips-grid { grid-template-columns: repeat(3, 1fr); }
  .b2c-order .segment-grid-4, .b2c-order .period-cards-grid { grid-template-columns: repeat(2, 1fr); }
  .b2c-order .config-card, .b2c-order .summary-card { padding: 22px 18px; }
  .b2c-order .order-fields { grid-template-columns: 1fr; }
  .b2c-order .total-hero-box { flex-wrap: wrap; gap: 12px; }
  .b2c-order .table-01 { min-width: 640px; }
  .b2c-order .coupon-label-row { flex-wrap: wrap; gap: 8px; }
}