:root {
    --premium-bg: var(--bg-primary, var(--color-bg, #0b0d12));
    --premium-surface: var(--surface, var(--bg-secondary, rgba(18, 22, 31, 0.92)));
    --premium-surface-strong: rgba(255, 255, 255, 0.08);
    --premium-border: var(--border-primary, rgba(255, 255, 255, 0.12));
    --premium-text: var(--text-primary, var(--color-text, #ffffff));
    --premium-text-secondary: var(--text-secondary, var(--color-text-secondary, #d2d6e0));
    --premium-text-muted: var(--text-muted, var(--color-text-muted, #99a1b3));
    --premium-accent: var(--accent-primary, var(--color-accent, #6ee7ff));
    --premium-accent-rgb: var(--accent-primary-rgb, 110, 231, 255);
    --premium-accent-2: var(--accent-secondary, var(--color-accent-alt, #bc13fe));
    --premium-accent-2-rgb: var(--accent-secondary-rgb, 188, 19, 254);
    --premium-gold: #ffd76a;
    --premium-gold-strong: #ffb648;
    --premium-success: #34d399;
    --premium-danger: #ff7b7b;
    --premium-radius: 24px;
    --premium-radius-md: 18px;
    --premium-radius-sm: 14px;
    --premium-shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
    --premium-max-width: 1220px;
}

html[data-theme="light"],
html[data-theme="light_japan"] {
    --premium-bg: #f6f2ea;
    --premium-surface: rgba(255, 255, 255, 0.96);
    --premium-surface-strong: rgba(0, 0, 0, 0.05);
    --premium-border: rgba(120, 32, 44, 0.10);
    --premium-shadow: 0 24px 60px rgba(20, 28, 45, 0.10);
    --premium-text: #21161a;
    --premium-text-secondary: #4d3d43;
    --premium-text-muted: #7a6970;
    --premium-accent: #c9182b;
    --premium-accent-rgb: 201, 24, 43;
    --premium-accent-2: #f0b44c;
    --premium-accent-2-rgb: 240, 180, 76;
    --premium-gold: #efc96e;
    --premium-gold-strong: #f3a73f;
}

html[data-theme="hard_japan"] {
    --premium-accent: #c9182b;
    --premium-accent-rgb: 201, 24, 43;
    --premium-accent-2: #e01b31;
    --premium-accent-2-rgb: 224, 27, 49;
    --premium-gold: #ffbf68;
    --premium-gold-strong: #ff9d47;
}

html[data-theme="light"] .premium-page,
html[data-theme="light_japan"] .premium-page {
    background:
        radial-gradient(circle at top left, rgba(201, 24, 43, 0.10), transparent 28rem),
        radial-gradient(circle at top right, rgba(240, 180, 76, 0.12), transparent 24rem),
        linear-gradient(180deg, rgba(255,255,255,0.65), rgba(246,242,234,0.95));
}

html[data-theme="light"] .premium-page::before,
html[data-theme="light_japan"] .premium-page::before,
html[data-theme="light"] .premium-page::after,
html[data-theme="light_japan"] .premium-page::after {
    opacity: 0.12;
}

.premium-page {
    position: relative;
    overflow: hidden;
    padding: 40px 0 72px;
    color: var(--premium-text);
}

.premium-page::before,
.premium-page::after {
    content: "";
    position: absolute;
    inset: auto;
    width: 38rem;
    height: 38rem;
    border-radius: 999px;
    filter: blur(100px);
    pointer-events: none;
    opacity: 0.22;
}

.premium-page::before {
    top: -12rem;
    left: -8rem;
    background: radial-gradient(circle, rgba(var(--premium-accent-rgb), 0.9), transparent 65%);
}

.premium-page::after {
    right: -10rem;
    top: 16rem;
    background: radial-gradient(circle, rgba(var(--premium-accent-2-rgb), 0.8), transparent 65%);
}

.premium-page__container {
    position: relative;
    z-index: 1;
    width: min(calc(100% - 32px), var(--premium-max-width));
    margin: 0 auto;
}

.premium-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
    gap: 24px;
    align-items: stretch;
}

.premium-hero__main,
.premium-hero__aside {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
    border: 1px solid var(--premium-border);
    border-radius: calc(var(--premium-radius) + 4px);
    box-shadow: var(--premium-shadow);
    backdrop-filter: blur(18px);
}

.premium-hero__main {
    padding: 34px;
}

.premium-hero__topline {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 18px;
}

.premium-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 40px;
    padding: 0 16px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.02em;
    border: 1px solid transparent;
}

.premium-pill--brand {
    color: #18130a;
    background: linear-gradient(135deg, var(--premium-gold), var(--premium-gold-strong));
}

.premium-pill--brand i {
    font-size: 13px;
}

.premium-pill--sale {
    color: var(--premium-gold);
    border-color: rgba(255, 215, 106, 0.35);
    background: rgba(255, 215, 106, 0.12);
}

.premium-pill--active {
    color: var(--premium-success);
    border-color: rgba(52, 211, 153, 0.35);
    background: rgba(52, 211, 153, 0.12);
}

.premium-hero__title {
    margin: 0;
    font-size: clamp(34px, 5vw, 60px);
    line-height: 1;
    font-weight: 900;
    max-width: 12ch;
}

.premium-hero__title-accent {
    display: block;
    margin-top: 6px;
    background: linear-gradient(135deg, var(--premium-gold), var(--premium-accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.premium-hero__lead {
    margin: 18px 0 0;
    max-width: 56ch;
    font-size: 17px;
    line-height: 1.7;
    color: var(--premium-text-secondary);
}

.premium-hero__stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin: 26px 0;
}

.premium-stat {
    padding: 16px;
    border-radius: var(--premium-radius-md);
    background: var(--premium-surface-strong);
    border: 1px solid var(--premium-border);
}

.premium-stat__value {
    display: block;
    font-size: 28px;
    line-height: 1;
    font-weight: 900;
    color: var(--premium-gold);
}

.premium-stat__label {
    display: block;
    margin-top: 8px;
    font-size: 13px;
    color: var(--premium-text-muted);
}

.premium-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 18px;
}

.premium-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 54px;
    padding: 0 24px;
    border-radius: 16px;
    font-size: 15px;
    font-weight: 800;
    text-decoration: none;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.premium-btn:hover {
    transform: translateY(-2px);
}

.premium-btn--primary {
    color: #ffffff;
    background: linear-gradient(135deg, var(--premium-accent), var(--premium-accent-2));
    box-shadow: 0 18px 34px rgba(var(--premium-accent-rgb), 0.28);
}

.premium-btn--secondary {
    color: var(--premium-text);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--premium-border);
}

.premium-btn--secondary:hover {
    border-color: rgba(var(--premium-accent-rgb), 0.38);
}

html[data-theme="hard_japan"] .premium-pill--sale,
html[data-theme="hard_japan"] .premium-stat__value,
html[data-theme="hard_japan"] .premium-plan__price,
html[data-theme="hard_japan"] .premium-plan__currency,
html[data-theme="hard_japan"] .premium-info-card li::before {
    color: var(--premium-accent);
}

html[data-theme="hard_japan"] .premium-pill--sale {
    border-color: rgba(var(--premium-accent-rgb), 0.34);
    background: rgba(var(--premium-accent-rgb), 0.12);
}

html[data-theme="hard_japan"] .premium-hero__title-accent {
    background: linear-gradient(135deg, #ffadb7, var(--premium-accent));
    -webkit-background-clip: text;
    background-clip: text;
}

.premium-hero__note {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 18px;
    padding: 14px 16px 0;
    margin: 0;
    list-style: none;
    color: var(--premium-text-muted);
    font-size: 13px;
}

.premium-hero__note li {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.premium-hero__aside {
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.premium-hero__visual {
    position: relative;
    overflow: hidden;
    min-height: 168px;
    border-radius: 24px;
    padding: 18px;
    background:
        radial-gradient(circle at top left, rgba(var(--premium-accent-rgb), 0.24), transparent 40%),
        linear-gradient(145deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
    border: 1px solid var(--premium-border);
}

.premium-hero__visual-orb {
    width: 72px;
    height: 72px;
    display: grid;
    place-items: center;
    border-radius: 22px;
    background: linear-gradient(135deg, var(--premium-gold), var(--premium-gold-strong));
    color: #241708;
    font-size: 30px;
    box-shadow: 0 16px 36px rgba(255, 182, 72, 0.22);
}

.premium-hero__visual-card {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: 18px;
}

.premium-hero__visual-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 12px;
    border-radius: 14px;
    background: rgba(255,255,255,0.08);
    border: 1px solid var(--premium-border);
    color: var(--premium-text);
    font-size: 13px;
    font-weight: 700;
    text-align: center;
}

.premium-hero__aside-title {
    margin: 0;
    font-size: 22px;
    font-weight: 800;
}

.premium-hero__aside-text {
    margin: 0;
    font-size: 15px;
    line-height: 1.65;
    color: var(--premium-text-secondary);
}

.premium-qr-card {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 18px;
    align-items: center;
    padding: 18px;
    border-radius: var(--premium-radius-md);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--premium-border);
}

.premium-qr-card__image {
    width: 132px;
    height: 132px;
    padding: 10px;
    border-radius: 18px;
    background: #fff;
    object-fit: contain;
}

.premium-qr-card__title {
    margin: 0 0 8px;
    font-size: 18px;
    font-weight: 800;
}

.premium-qr-card__text,
.premium-qr-card__url {
    margin: 0;
    font-size: 14px;
    line-height: 1.6;
    color: var(--premium-text-secondary);
    word-break: break-word;
}

.premium-qr-card__url {
    margin-top: 10px;
    color: var(--premium-text-muted);
}

.premium-payment-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.premium-payment-chip {
    padding: 10px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--premium-border);
    color: var(--premium-text-secondary);
    font-size: 13px;
    font-weight: 700;
}

.premium-section {
    margin-top: 28px;
}

.premium-section__header {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.premium-section__title {
    margin: 0;
    font-size: clamp(26px, 3vw, 38px);
    font-weight: 900;
}

.premium-section__subtitle {
    margin: 8px 0 0;
    max-width: 62ch;
    font-size: 15px;
    line-height: 1.7;
    color: var(--premium-text-secondary);
}

.premium-benefits {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.premium-benefit {
    padding: 22px;
    border-radius: var(--premium-radius-md);
    background: var(--premium-surface);
    border: 1px solid var(--premium-border);
}

.premium-benefit__icon {
    display: inline-grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    margin-bottom: 14px;
    font-size: 22px;
    background: linear-gradient(135deg, rgba(var(--premium-accent-rgb), 0.18), rgba(var(--premium-accent-2-rgb), 0.16));
}

.premium-benefit h3 {
    margin: 0 0 8px;
    font-size: 18px;
    font-weight: 800;
}

.premium-benefit p {
    margin: 0;
    font-size: 14px;
    line-height: 1.65;
    color: var(--premium-text-secondary);
}

.premium-plans {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 18px;
}

.premium-plan {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 26px;
    border-radius: var(--premium-radius);
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
    border: 1px solid var(--premium-border);
    box-shadow: var(--premium-shadow);
}

.premium-plan--highlighted {
    border-color: rgba(255, 215, 106, 0.42);
    box-shadow: 0 28px 70px rgba(255, 182, 72, 0.16);
    transform: translateY(-8px);
}

.premium-plan__topline {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    margin-bottom: 18px;
}

.premium-plan__badge {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 12px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.premium-plan__badge--sale {
    color: #18130a;
    background: linear-gradient(135deg, var(--premium-gold), var(--premium-gold-strong));
}

.premium-plan__badge--best {
    color: var(--premium-accent);
    background: rgba(var(--premium-accent-rgb), 0.16);
    border: 1px solid rgba(var(--premium-accent-rgb), 0.24);
}

html[data-theme="light"] .premium-hero__main,
html[data-theme="light_japan"] .premium-hero__main,
html[data-theme="light"] .premium-hero__aside,
html[data-theme="light_japan"] .premium-hero__aside,
html[data-theme="light"] .premium-benefit,
html[data-theme="light_japan"] .premium-benefit,
html[data-theme="light"] .premium-plan,
html[data-theme="light_japan"] .premium-plan,
html[data-theme="light"] .premium-info-card,
html[data-theme="light_japan"] .premium-info-card,
html[data-theme="light"] .premium-faq details,
html[data-theme="light_japan"] .premium-faq details {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 20px 44px rgba(84, 47, 56, 0.08);
}

html[data-theme="light"] .premium-btn--secondary,
html[data-theme="light_japan"] .premium-btn--secondary {
    background: rgba(255,255,255,0.88);
    color: #3f2026;
}

html[data-theme="light"] .premium-hero__title-accent,
html[data-theme="light_japan"] .premium-hero__title-accent {
    background: linear-gradient(135deg, #bf2434, #f0b44c);
    -webkit-background-clip: text;
    background-clip: text;
}

html[data-theme="light"] .premium-stat__value,
html[data-theme="light_japan"] .premium-stat__value,
html[data-theme="light"] .premium-plan__price,
html[data-theme="light_japan"] .premium-plan__price,
html[data-theme="light"] .premium-plan__currency,
html[data-theme="light_japan"] .premium-plan__currency {
    color: #bf2434;
}

html[data-theme="light"] .premium-hero__visual-chip,
html[data-theme="light_japan"] .premium-hero__visual-chip {
    background: rgba(255,255,255,0.88);
}

.premium-plan__name {
    margin: 0;
    font-size: 24px;
    font-weight: 900;
}

.premium-plan__description {
    margin: 10px 0 0;
    min-height: 48px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--premium-text-secondary);
}

.premium-plan__pricing {
    display: flex;
    align-items: end;
    gap: 12px;
    margin-top: 20px;
}

.premium-plan__price-block {
    display: flex;
    align-items: baseline;
    gap: 6px;
}

.premium-plan__price {
    font-size: 42px;
    line-height: 0.95;
    font-weight: 900;
    color: var(--premium-gold);
}

.premium-plan__currency {
    font-size: 20px;
    font-weight: 800;
    color: var(--premium-gold);
}

.premium-plan__old-price {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 10px;
    border-radius: 999px;
    background: rgba(255, 123, 123, 0.10);
    color: var(--premium-danger);
    font-size: 13px;
    font-weight: 700;
    text-decoration: line-through;
}

.premium-plan__period {
    margin-top: 12px;
    font-size: 14px;
    color: var(--premium-text-muted);
}

.premium-plan__list {
    margin: 20px 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 10px;
}

.premium-plan__list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--premium-text-secondary);
    font-size: 14px;
    line-height: 1.55;
}

.premium-plan__list li::before {
    content: "✓";
    color: var(--premium-success);
    font-weight: 900;
}

.premium-plan__footnote {
    margin: 16px 0 0;
    font-size: 13px;
    line-height: 1.55;
    color: var(--premium-text-muted);
}

.premium-plan__actions {
    margin-top: auto;
    padding-top: 22px;
}

.premium-plan__actions .premium-btn {
    width: 100%;
}

.premium-extra-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.premium-info-card {
    padding: 24px;
    border-radius: var(--premium-radius-md);
    background: var(--premium-surface);
    border: 1px solid var(--premium-border);
}

.premium-info-card h3 {
    margin: 0 0 12px;
    font-size: 22px;
    font-weight: 800;
}

.premium-info-card p {
    margin: 0;
    font-size: 14px;
    line-height: 1.7;
    color: var(--premium-text-secondary);
}

.premium-info-card ul {
    margin: 16px 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 10px;
}

.premium-info-card li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--premium-text-secondary);
    font-size: 14px;
    line-height: 1.55;
}

.premium-info-card li::before {
    content: "•";
    color: var(--premium-gold);
    font-size: 20px;
    line-height: 1;
}

.premium-faq {
    display: grid;
    gap: 12px;
}

.premium-faq details {
    padding: 18px 20px;
    border-radius: var(--premium-radius-md);
    background: var(--premium-surface);
    border: 1px solid var(--premium-border);
}

.premium-faq summary {
    cursor: pointer;
    font-size: 16px;
    font-weight: 800;
    color: var(--premium-text);
    list-style: none;
}

.premium-faq summary::-webkit-details-marker {
    display: none;
}

.premium-faq p {
    margin: 12px 0 0;
    font-size: 14px;
    line-height: 1.7;
    color: var(--premium-text-secondary);
}

@media (max-width: 1080px) {
    .premium-hero {
        grid-template-columns: 1fr;
    }

    .premium-benefits {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .premium-extra-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 760px) {
    .premium-page {
        padding: 24px 0 56px;
    }

    .premium-hero__main,
    .premium-hero__aside,
    .premium-benefit,
    .premium-plan,
    .premium-info-card,
    .premium-faq details {
        padding-left: 20px;
        padding-right: 20px;
    }

    .premium-hero__main {
        padding-top: 24px;
        padding-bottom: 24px;
    }

    .premium-hero__aside {
        padding-top: 22px;
        padding-bottom: 22px;
    }

    .premium-hero__stats {
        grid-template-columns: 1fr;
    }

    .premium-benefits {
        grid-template-columns: 1fr;
    }

    .premium-section__header {
        align-items: start;
        flex-direction: column;
    }

    .premium-qr-card {
        grid-template-columns: 1fr;
        justify-items: start;
    }

    .premium-hero__visual-card {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 520px) {
    .premium-page__container {
        width: min(calc(100% - 20px), var(--premium-max-width));
    }

    .premium-hero__actions {
        flex-direction: column;
    }

    .premium-btn {
        width: 100%;
    }

    .premium-plan__pricing {
        flex-direction: column;
        align-items: flex-start;
    }
}