.checkout-page {
    min-height: 100vh;
    padding: 100px 24px 80px;
}
.checkout-inner {
    max-width: 960px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 32px;
    align-items: start;
}

/* ── Section headings ── */
.co-section-title {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: var(--cyan);
    text-transform: uppercase;
    margin-bottom: 20px;
}

/* ── Form card ── */
.co-card {
    background: #0d0d0d;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 36px 32px;
}

/* ── Form fields ── */
.co-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.co-label {
    display: block;
    font-size: 0.78rem;
    font-weight: 600;
    color: rgba(255,255,255,0.6);
    letter-spacing: 0.06em;
    margin-bottom: 8px;
}
.co-label span { color: var(--cyan); margin-left: 2px; }
.co-input {
    width: 100%;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 10px;
    padding: 14px 16px;
    font-size: 0.95rem;
    font-family: inherit;
    color: #fff;
    transition: border-color 0.2s;
    box-sizing: border-box;
}
.co-input::placeholder { color: rgba(255,255,255,0.3); }
.co-input:focus {
    outline: none;
    border-color: var(--cyan);
}
.co-input.error { border-color: #ff5c5c; }
.co-input-hint {
    font-size: 0.72rem;
    color: rgba(255,255,255,0.35);
    margin-top: 5px;
}
.co-error {
    font-size: 0.78rem;
    color: #ff5c5c;
    margin-top: 4px;
    display: none;
}
.co-error.show { display: block; }

/* ── Divider ── */
.co-divider {
    height: 1px;
    background: rgba(255,255,255,0.08);
    margin: 8px 0;
}

/* ── Checkboxes ── */
.co-agree-all {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 14px 16px;
    background: rgba(0,229,255,0.05);
    border: 1px solid rgba(0,229,255,0.2);
    border-radius: 10px;
}
.co-agree-all input[type="checkbox"] { display: none; }
.co-check-box {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.25);
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.2s;
}
.co-check-box svg { display: none; }
input[type="checkbox"]:checked + .co-check-box,
.co-agree-all.checked .co-check-box {
    background: var(--cyan);
    border-color: var(--cyan);
}
input[type="checkbox"]:checked + .co-check-box svg,
.co-agree-all.checked .co-check-box svg { display: block; }
.co-agree-all-label {
    font-size: 0.9rem;
    font-weight: 700;
    color: #fff;
}
.co-agree-items {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 4px;
}
.co-agree-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
}
.co-agree-item input[type="checkbox"] { display: none; }
.co-check-sm {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,0.2);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 1px;
    transition: all 0.2s;
}
.co-check-sm svg { display: none; }
.co-agree-item input[type="checkbox"]:checked + .co-check-sm {
    background: var(--cyan);
    border-color: var(--cyan);
}
.co-agree-item input[type="checkbox"]:checked + .co-check-sm svg { display: block; }
.co-agree-text {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.65);
    line-height: 1.5;
}
.co-agree-text a {
    color: var(--cyan);
    text-decoration: underline;
}
.co-agree-text .tag-req {
    color: var(--cyan);
    font-weight: 700;
    margin-right: 4px;
}
.co-agree-err {
    font-size: 0.78rem;
    color: #ff5c5c;
    display: none;
}
.co-agree-err.show { display: block; }

/* ── Right: Plan Summary ── */
.co-summary {
    position: sticky;
    top: 100px;
}

.co-plan-card {
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    overflow: hidden;
    transition: border-color 0.35s, box-shadow 0.35s;
}
.co-plan-card.is-pro {
    border-color: rgba(91,45,232,0.55);
    box-shadow: 0 0 32px rgba(91,45,232,0.18);
}

.co-plan-hdr {
    background: linear-gradient(135deg, #5b2de8 0%, #00c4e0 100%);
    padding: 15px 24px;
    text-align: center;
    font-size: 0.98rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: 0.04em;
}

.co-plan-body {
    background: #0d0d0d;
    padding: 24px 28px 28px;
}

.co-plan-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(0,229,255,0.1);
    border: 1px solid rgba(0,229,255,0.3);
    border-radius: 20px;
    padding: 4px 12px;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--cyan);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 14px;
}
.co-plan-name {
    font-size: 1.6rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: 0.04em;
    margin-bottom: 4px;
}
.co-plan-sub {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.45);
    margin-bottom: 18px;
}
.co-plan-price {
    font-size: 2rem;
    font-weight: 900;
    color: #fff;
    margin-bottom: 18px;
}
.co-plan-price span {
    font-size: 0.9rem;
    font-weight: 400;
    color: rgba(255,255,255,0.5);
}
.co-plan-features {
    list-style: none;
    padding: 0;
    margin: 0 0 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.co-plan-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.75);
}
.co-plan-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--cyan);
    flex-shrink: 0;
}
.co-divider-thin {
    height: 1px;
    background: rgba(255,255,255,0.08);
    margin: 20px 0;
}
.co-price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}
.co-price-row-label {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.5);
}
.co-price-row-value {
    font-size: 0.9rem;
    font-weight: 600;
    color: rgba(255,255,255,0.8);
}
.co-total-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
}
.co-total-label {
    font-size: 0.88rem;
    font-weight: 700;
    color: rgba(255,255,255,0.7);
}
.co-total-value {
    font-size: 1.4rem;
    font-weight: 900;
    color: #fff;
}

/* ── 결제 수단 선택 ── */
.co-pay-methods-wrap {
    padding-top: 20px;
    margin-bottom: 16px;
}
.co-pay-methods-title {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: rgba(255,255,255,0.35);
    text-transform: uppercase;
    margin-bottom: 10px;
}
.co-pay-methods {
    display: flex;
    gap: 8px;
}
.co-pay-method-btn {
    flex: 1;
    padding: 12px 6px;
    background: rgba(255,255,255,0.03);
    border: 1.5px solid rgba(255,255,255,0.1);
    border-radius: 10px;
    color: rgba(255,255,255,0.45);
    font-size: 0.72rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
}
.co-pay-method-btn:hover {
    border-color: rgba(255,255,255,0.22);
    color: rgba(255,255,255,0.75);
    background: rgba(255,255,255,0.06);
}
.co-pay-method-btn.selected {
    border-color: var(--cyan);
    background: rgba(0,229,255,0.07);
    color: #fff;
}

/* ── Pay button ── */
.co-pay-btn {
    width: 100%;
    padding: 16px;
    background: var(--cyan);
    color: #000;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 800;
    font-family: inherit;
    letter-spacing: 0.06em;
    cursor: pointer;
    margin-top: 8px;
    transition: opacity 0.2s, transform 0.15s;
}
.co-pay-btn:hover { opacity: 0.88; transform: translateY(-1px); }
.co-pay-btn:active { transform: translateY(0); }
.co-pay-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.co-secure-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    margin-top: 14px;
    font-size: 0.74rem;
    color: rgba(255,255,255,0.35);
}
.co-tv-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    margin-top: 8px;
    font-size: 0.72rem;
    color: rgba(255,255,255,0.28);
    line-height: 1.5;
}
.co-tv-note strong {
    color: rgba(255,255,255,0.42);
    font-weight: 600;
}

/* ── 아코디언 ── */
.co-accordion-toggle {
    width: 100%;
    margin-top: 16px;
    padding: 11px 14px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 10px;
    color: rgba(255,255,255,0.55);
    font-size: 0.92rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0;
    transition: color 0.2s, border-color 0.2s, background 0.2s,
                border-bottom-left-radius 0s 0.4s,
                border-bottom-right-radius 0s 0.4s;
}
.co-accordion-toggle:hover {
    color: rgba(255,255,255,0.85);
    border-color: rgba(255,255,255,0.22);
    background: rgba(255,255,255,0.08);
}
.co-accordion-toggle.open {
    color: #fff;
    border-color: rgba(255,255,255,0.2);
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    transition: color 0.2s, border-color 0.2s, background 0.2s,
                border-bottom-left-radius 0s,
                border-bottom-right-radius 0s;
}
.co-accordion-chevron {
    flex-shrink: 0;
    transition: transform 0.3s ease;
}
.co-accordion-toggle.open .co-accordion-chevron {
    transform: rotate(180deg);
}
.co-accordion-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    margin-top: 0;
}
.co-accordion-panel.open {
    max-height: 700px;
}
.co-alt-plan {
    background: #1a1a1a;
    border: 1px solid rgba(255,255,255,0.1);
    border-top: none;
    border-radius: 0 0 10px 10px;
    padding: 14px 14px 16px;
    margin-bottom: 4px;
}
.co-alt-plan.is-pro {
    border-color: rgba(91,45,232,0.35);
}
.co-alt-plan-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 12px;
}
.co-alt-plan-name {
    font-size: 1.4rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: 0.04em;
}
.co-alt-plan-price {
    font-size: 1.05rem;
    font-weight: 700;
    color: #fff;
    white-space: nowrap;
}
.co-alt-plan-price span {
    font-size: 0.8rem;
    font-weight: 400;
    color: rgba(255,255,255,0.55);
}
.co-alt-features {
    list-style: none;
    padding: 0;
    margin: 10px 0 0;
    display: flex;
    flex-direction: column;
    gap: 7px;
}
.co-alt-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: rgba(255,255,255,0.6);
}
.co-alt-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--cyan);
    flex-shrink: 0;
}
.co-switch-btn {
    width: 100%;
    padding: 13px;
    margin-top: 12px;
    background: transparent;
    border: 1.5px solid var(--cyan);
    border-radius: 10px;
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.15s, border-color 0.2s, color 0.2s;
}
.co-switch-btn:hover { opacity: 0.85; transform: translateY(-1px); }
.co-switch-btn:active { transform: translateY(0); }
.co-switch-btn.upgrade {
    border-color: var(--cyan);
    color: var(--cyan);
}
.co-switch-btn.upgrade:hover { background: rgba(0,229,255,0.07); }
.co-switch-btn.downgrade {
    color: rgba(255,255,255,0.45);
}
.co-switch-btn.downgrade:hover { color: rgba(255,255,255,0.65); }

/* ── 로그인 모달 ── */
.login-modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.78);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}
.login-modal-overlay.active { display: flex; }
.login-modal-box {
    background: #0d0d0d;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 20px;
    padding: 40px 36px;
    width: 100%;
    max-width: 420px;
    margin: 24px;
    position: relative;
}
.login-modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    cursor: pointer;
    color: rgba(255,255,255,0.4);
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s;
    border-radius: 6px;
}
.login-modal-close:hover { color: rgba(255,255,255,0.8); }
.login-modal-back {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    color: rgba(255,255,255,0.45);
    font-size: 0.8rem;
    font-family: inherit;
    padding: 0;
    margin-bottom: 20px;
    transition: color 0.2s;
}
.login-modal-back:hover { color: rgba(255,255,255,0.8); }
.login-modal-header { text-align: center; margin-bottom: 28px; }
.login-modal-sub {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--cyan);
    text-transform: uppercase;
    margin-bottom: 6px;
}
.login-modal-title { font-size: 1.8rem; font-weight: 800; color: #fff; letter-spacing: 0.05em; }
.lm-form { display: flex; flex-direction: column; gap: 16px; }
.lm-group { display: flex; flex-direction: column; gap: 6px; }
.lm-label { font-size: 0.8rem; color: #a0b8cc; font-weight: 500; }
.lm-input-wrap { position: relative; }
.lm-input {
    width: 100%;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 10px;
    padding: 12px 16px;
    font-size: 0.95rem;
    color: #fff;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
}
.lm-input.has-toggle { padding-right: 48px; }
.lm-input::placeholder { color: #4a6070; }
.lm-input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0,229,255,0.12); }
.lm-pw-toggle {
    position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
    background: none; border: none; cursor: pointer; color: #6a8aaa;
    padding: 4px; display: flex; align-items: center; transition: color 0.2s;
}
.lm-pw-toggle:hover { color: #a0b8cc; }
.lm-error { font-size: 0.78rem; color: #fa5757; display: none; }
.lm-error.show { display: block; }
.lm-submit {
    width: 100%; padding: 14px;
    background: linear-gradient(135deg, #00b4cc, #0099aa);
    border: none; border-radius: 10px; color: #fff;
    font-size: 1rem; font-weight: 700;
    font-family: inherit; cursor: pointer;
    letter-spacing: 0.05em;
    transition: opacity 0.2s, transform 0.15s;
}
.lm-submit:hover { opacity: 0.9; transform: translateY(-1px); }
.lm-submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.lm-divider { display: flex; align-items: center; gap: 12px; margin: 16px 0 12px; }
.lm-divider-line { flex: 1; height: 1px; background: rgba(255,255,255,0.1); }
.lm-divider-text { font-size: 0.8rem; color: #6a8aaa; white-space: nowrap; }
.lm-social-group { display: flex; flex-direction: column; gap: 10px; }
.lm-social-btn {
    width: 100%; padding: 13px; border: none; border-radius: 10px;
    font-size: 0.92rem; font-weight: 600;
    font-family: inherit; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    gap: 10px; transition: opacity 0.2s;
}
.lm-social-btn:hover { opacity: 0.88; }
.lm-kakao { background: #FEE500; color: rgba(0,0,0,0.85); }
.lm-google { background: #fff; color: rgba(0,0,0,0.85); border: 1px solid #e0e0e0; }
.lm-footer-text { text-align: center; font-size: 0.85rem; color: #6a8aaa; margin-top: 20px; }
.lm-footer-text a { color: var(--cyan); font-weight: 600; text-decoration: none; }
.lm-footer-text a:hover { text-decoration: underline; }

/* ── Page heading ── */
.co-page-header { margin-bottom: 8px; }
.co-page-eyebrow {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: var(--cyan);
    text-transform: uppercase;
    margin-bottom: 6px;
}
.co-page-title {
    font-size: 1.8rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: 0.04em;
    margin-bottom: 32px;
}

/* ── Order info display ── */
.co-info-section { display: flex; flex-direction: column; }
.co-info-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 0;
}
.co-thin-div {
    height: 1px;
    background: rgba(255,255,255,0.07);
}
.co-info-lbl {
    font-size: 0.72rem;
    font-weight: 700;
    color: rgba(255,255,255,0.38);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    min-width: 58px;
    flex-shrink: 0;
}
.co-req { color: var(--cyan); margin-left: 2px; }
.co-info-right {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}
.co-info-val {
    flex: 1;
    font-size: 0.95rem;
    color: #fff;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.co-info-val.empty { color: rgba(255,255,255,0.25); font-style: italic; font-size: 0.88rem; }
.co-edit-input {
    display: none;
    flex: 1;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 8px;
    padding: 10px 13px;
    font-size: 0.92rem;
    font-family: inherit;
    color: #fff;
    transition: border-color 0.2s;
    box-sizing: border-box;
}
.co-edit-input:focus { outline: none; border-color: var(--cyan); }
.co-edit-input.error { border-color: #ff5c5c; }
.co-edit-btn {
    padding: 6px 11px;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: 6px;
    color: rgba(255,255,255,0.4);
    font-size: 0.74rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
    white-space: nowrap;
    flex-shrink: 0;
}
.co-edit-btn:hover { border-color: var(--cyan); color: var(--cyan); }
.co-confirm-btn {
    display: none;
    padding: 6px 11px;
    background: var(--cyan);
    border: none;
    border-radius: 6px;
    color: #000;
    font-size: 0.74rem;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: opacity 0.2s;
    white-space: nowrap;
    flex-shrink: 0;
}
.co-confirm-btn:hover { opacity: 0.85; }

/* ── Pay section ── */
.co-pay-section {
    margin-top: 0;
}

@media (min-width: 769px) {
    .co-plan-card {
        border-bottom-left-radius: 0;
        border-bottom-right-radius: 0;
        border-bottom: none;
    }
    .co-pay-section {
        background: #0d0d0d;
        border: 1px solid rgba(255,255,255,0.1);
        border-top: 1px solid rgba(255,255,255,0.08);
        border-bottom-left-radius: 20px;
        border-bottom-right-radius: 20px;
        padding: 0 28px 24px;
    }
    .co-plan-card.is-pro {
        border-color: rgba(91,45,232,0.55);
    }
    .co-plan-card.is-pro + .co-pay-section {
        border-color: rgba(91,45,232,0.55);
        box-shadow: 0 8px 32px rgba(91,45,232,0.12);
    }
}
.co-pay-note {
    font-size: 0.72rem;
    color: rgba(255,255,255,0.35);
    text-align: center;
    margin-top: 20px;
    margin-bottom: 0;
    line-height: 1.5;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .checkout-inner {
        display: flex;
        flex-direction: column;
    }
    .co-summary {
        display: contents;
        position: static;
    }
    .co-plan-card   { order: 1; width: 100%; }
    .co-form-col    { order: 2; width: 100%; }
    .co-pay-section { order: 3; width: 100%; }
    .co-plan-card {
        border-radius: 20px !important;
        border-bottom: 1px solid rgba(255,255,255,0.1) !important;
    }
    .co-plan-card.is-pro {
        border-color: rgba(91,45,232,0.55) !important;
    }
    .co-pay-section {
        background: none;
        border: none;
        border-radius: 0;
        padding: 0;
    }
}