.purchase-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 1.5rem 3rem;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.purchase-page::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: min(1100px, 95vw);
    height: min(900px, 90vw);
    transform: translate(-50%, -50%);
    background: radial-gradient(ellipse at center, rgba(234, 88, 12, 0.13) 0%, rgba(234, 88, 12, 0.05) 28%, rgba(234, 88, 12, 0) 60%);
    filter: blur(8px);
    pointer-events: none;
    z-index: 0;
}

.purchase-container {
    max-width: 980px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    z-index: 1;
    opacity: 0;
    animation: purchaseFadeIn 0.5s cubic-bezier(0.22, 1, 0.36, 1) 0.1s forwards;
}

.purchase-container > .pricing-grid {
    width: 100%;
}

@keyframes purchaseFadeIn {
    from {
        opacity: 0;
        transform: translateY(14px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.purchase-brand {
    display: inline-flex;
    align-items: center;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.04em;
    line-height: 1;
    margin-bottom: 1.25rem;
}

.purchase-brand svg {
    height: 1.5em;
    width: auto;
    margin: -0.1em -0.32em -0.05em -0.3em;
    vertical-align: middle;
}

.purchase-title {
    font-size: clamp(2rem, 4.5vw, 2.75rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.04em;
    line-height: 1.05;
}

.purchase-subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
    opacity: 0.78;
    margin-bottom: 2.75rem;
    letter-spacing: 0.01em;
}

.discount-banner {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 0.75rem 1.25rem;
    margin-bottom: 1.75rem;
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.discount-banner .discount-badge {
    background: var(--gradient-btn);
    color: #f2f2f2;
    padding: 0.18rem 0.55rem;
    border-radius: var(--radius-sm);
    font-family: var(--dash-font-mono, ui-monospace, 'JetBrains Mono', monospace);
    font-weight: 500;
    font-size: 0.7rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.pricing-card .price {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.discount-original {
    text-decoration: line-through;
    color: var(--text-tertiary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 0.25rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.pricing-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--dash-radius);
    padding: 1.75rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    text-align: left;
    position: relative;
    transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.pricing-card:hover {
    border-color: var(--border-strong);
    transform: translateY(-2px);
}

.pricing-card.featured {
    border-color: rgba(234, 88, 12, 0.45);
    background: var(--bg-card);
    box-shadow: 0 0 0 1px rgba(234, 88, 12, 0.15), 0 18px 40px -22px rgba(234, 88, 12, 0.35);
}

.pricing-card.featured:hover {
    border-color: var(--accent);
}

.li-note {
    color: var(--text-tertiary);
    font-size: 0.78rem;
    margin-left: 0.25rem;
    opacity: 0.85;
}

.pricing-card.featured .li-note {
    color: var(--accent-hot);
    opacity: 0.9;
}

.featured-badge {
    position: absolute;
    top: -10px;
    left: 1.5rem;
    background: var(--gradient-btn);
    color: #f2f2f2;
    padding: 0.22rem 0.7rem;
    border-radius: 999px;
    font-family: ui-monospace, 'JetBrains Mono', 'SF Mono', monospace;
    font-size: 0.62rem;
    font-weight: 500;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    box-shadow: 0 0 12px rgba(234, 88, 12, 0.35);
}

.pricing-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: -0.015em;
}

.price-row {
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
    margin-bottom: 1.25rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--border);
}

.pricing-card .price {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.04em;
    line-height: 1;
}

.pricing-card .price-period {
    font-family: ui-monospace, 'JetBrains Mono', 'SF Mono', monospace;
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-tertiary);
    letter-spacing: 0.04em;
}

.pricing-card ul {
    list-style: none;
    margin: 0 0 1.5rem;
    width: 100%;
    flex: 1;
    padding: 0;
}

.pricing-card ul li {
    padding: 0.32rem 0;
    color: var(--text-secondary);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.55rem;
}

.pricing-card ul li::before {
    content: '';
    width: 14px;
    height: 1px;
    background: var(--text-tertiary);
    flex-shrink: 0;
    opacity: 0.6;
}

.pricing-card.featured ul li::before {
    background: var(--accent);
    opacity: 0.7;
}

.pricing-card .buy-btn {
    width: 100%;
    justify-content: center;
    text-align: center;
}

.pricing-card.disabled {
    opacity: 0.4;
    pointer-events: none;
}

.sales-closed-banner {
    background: var(--bg-secondary);
    border: 1px solid rgba(239, 95, 95, 0.15);
    border-radius: var(--radius-md);
    padding: 0.875rem 1.25rem;
    margin-bottom: 1.75rem;
    color: var(--error);
    font-size: 0.85rem;
    font-weight: 500;
}

.payment-section {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    opacity: 0;
    animation: purchaseFadeIn 0.3s ease forwards;
}

.payment-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    text-align: left;
}

.payment-card h2 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.875rem;
    letter-spacing: -0.01em;
}

.payment-card h3 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.875rem;
    margin-top: 1.25rem;
}

.payment-plan,
.payment-amount {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.payment-amount span {
    font-weight: 600;
    color: var(--text-primary);
}

.crypto-selector {
    position: relative;
    margin-bottom: 1.25rem;
}

.crypto-search {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    color: var(--text-primary);
    font-size: 0.85rem;
    font-family: var(--font);
    outline: none;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
    box-sizing: border-box;
}

.crypto-search:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.14);
}

.crypto-search::placeholder {
    color: var(--text-tertiary);
}

.crypto-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: 240px;
    overflow-y: auto;
    background: var(--bg-card);
    border: 1px solid var(--border-strong);
    border-top: none;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    z-index: 10;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
}

.crypto-dropdown.open {
    display: block;
}

.crypto-dropdown-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 0.875rem;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
    border-bottom: 1px solid var(--border);
}

.crypto-dropdown-item:last-child {
    border-bottom: none;
}

.crypto-dropdown-item:hover {
    background: rgba(234, 88, 12, 0.06);
}

.crypto-dropdown-item:hover .crypto-item-name {
    color: var(--accent);
}

.crypto-dropdown-item .crypto-item-name {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
}

.crypto-dropdown-item .crypto-item-code {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.crypto-dropdown::-webkit-scrollbar {
    width: 4px;
}

.crypto-dropdown::-webkit-scrollbar-track {
    background: transparent;
}

.crypto-dropdown::-webkit-scrollbar-thumb {
    background: rgba(234, 88, 12, 0.18);
    border-radius: 4px;
}

.payment-address-box {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.125rem;
    margin: 0.875rem 0;
}

.payment-address-box p {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-bottom: 0.375rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 500;
}

.payment-crypto-amount {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.875rem;
    word-break: break-all;
    letter-spacing: -0.02em;
}

.payment-address {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    background: var(--bg-primary);
    padding: 0.625rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.payment-address code {
    flex: 1;
    font-size: 0.75rem;
    color: var(--text-primary);
    word-break: break-all;
    font-family: ui-monospace, 'JetBrains Mono', 'SF Mono', Menlo, monospace;
}

.copy-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    padding: 0.35rem 0.65rem;
    font-family: ui-monospace, 'JetBrains Mono', 'SF Mono', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
    white-space: nowrap;
}

.copy-btn:hover {
    background: rgba(234, 88, 12, 0.08);
    color: var(--accent);
    border-color: var(--accent);
}

.payment-status {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0.875rem 0 0.375rem;
}

.payment-status.confirming {
    color: var(--warning);
}

.payment-status.completed {
    color: var(--success);
}

.payment-timer {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-bottom: 1.25rem;
}

.payment-timer span {
    font-weight: 600;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.payment-qr {
    text-align: center;
    margin: 0.875rem 0;
}

.payment-qr img {
    width: 280px;
    height: 280px;
    border-radius: var(--radius-md);
    background: #fff;
    padding: 8px;
}

.purchase-nav-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

@media (min-width: 1200px) {
    .purchase-page {
        padding: 2rem;
    }

    .purchase-container {
        max-width: 1100px;
    }

    .purchase-title {
        font-size: 2.25rem;
    }

    .purchase-subtitle {
        font-size: 0.95rem;
        margin-bottom: 3rem;
    }

    .pricing-grid {
        gap: 1.25rem;
    }

    .pricing-card {
        padding: 2.25rem 1.75rem;
    }

    .pricing-card h3 {
        font-size: 1.1rem;
    }

    .pricing-card .price {
        font-size: 2.75rem;
    }

    .pricing-card ul li {
        font-size: 0.9rem;
        padding: 0.4rem 0;
    }

    .payment-section {
        max-width: 540px;
    }
}

@media (min-width: 1600px) {
    .purchase-container {
        max-width: 1240px;
    }

    .purchase-title {
        font-size: 2.5rem;
    }

    .purchase-subtitle {
        font-size: 1rem;
        margin-bottom: 3.5rem;
    }

    .pricing-grid {
        gap: 1.5rem;
    }

    .pricing-card {
        padding: 2.5rem 2rem;
    }

    .pricing-card h3 {
        font-size: 1.2rem;
    }

    .pricing-card .price {
        font-size: 3rem;
        margin-bottom: 1.5rem;
    }

    .pricing-card ul {
        margin-bottom: 2rem;
    }

    .pricing-card ul li {
        font-size: 0.95rem;
        padding: 0.45rem 0;
    }

    .payment-section {
        max-width: 580px;
    }

    .payment-card {
        padding: 2.25rem;
    }
}

@media (max-width: 768px) {
    .purchase-page::before {
        display: none;
    }
}

@media (max-width: 960px) {
    .purchase-page {
        padding: 1.5rem 1rem;
    }

    .purchase-container {
        max-width: 100%;
    }

    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.625rem;
    }

    .pricing-card {
        padding: 1.25rem 1rem;
    }

    .pricing-card h3 {
        font-size: 0.9rem;
    }

    .pricing-card .price {
        font-size: 1.625rem;
        margin-bottom: 0.875rem;
    }

    .pricing-card .price .price-period {
        font-size: 0.7rem;
    }

    .pricing-card ul li {
        font-size: 0.75rem;
        padding: 0.25rem 0;
    }

    .pricing-card ul {
        margin-bottom: 1.125rem;
    }

    .purchase-title {
        font-size: 1.375rem;
    }

    .purchase-subtitle {
        font-size: 0.85rem;
        margin-bottom: 1.75rem;
    }

    .payment-section {
        max-width: 100%;
    }

    .payment-card {
        padding: 1.375rem;
    }
}

@media (max-width: 600px) {
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 380px;
        margin-left: auto;
        margin-right: auto;
        gap: 0.75rem;
    }

    .pricing-card {
        padding: 1.5rem 1.25rem;
    }

    .pricing-card .price {
        font-size: 2rem;
    }

    .pricing-card ul li {
        font-size: 0.85rem;
        padding: 0.35rem 0;
    }

    .purchase-page {
        padding: 3.5rem 1rem 2rem;
    }

    .purchase-title {
        font-size: 1.5rem;
    }

    .purchase-subtitle {
        margin-bottom: 1.75rem;
    }
}

@media (max-width: 480px) {
    .payment-card {
        padding: 1.375rem 1rem;
    }

    .payment-address {
        flex-direction: column;
        align-items: stretch;
    }

    .payment-address code {
        font-size: 0.7rem;
    }
}