/* vpstix zh 子页面 — 与首页同源的 Tailwind 补充样式 */

/* Blog cards (blog.js 输出) */
.blog-grid {
    display: grid;
    gap: 1.25rem;
}
@media (min-width: 768px) {
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
    .blog-grid { grid-template-columns: repeat(3, 1fr); }
}
.blog-card {
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 1.5rem;
    text-decoration: none;
    color: inherit;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    min-height: 100%;
}
.blog-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 24px 48px -12px rgba(37, 99, 235, 0.12);
    border-color: rgba(37, 99, 235, 0.25);
}
.blog-card--featured {
    grid-column: 1 / -1;
    padding: 2rem;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    border-color: transparent;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.blog-card--featured:hover {
    border-color: transparent;
    box-shadow: 0 24px 60px -12px rgba(15, 23, 42, 0.4);
}
.blog-card--featured .blog-card__title { color: #fff; font-size: 1.75rem; }
.blog-card--featured .blog-card__excerpt { color: rgba(255,255,255,0.65); }
.blog-card--featured .blog-card__tag {
    background: rgba(255,255,255,0.12);
    color: #93c5fd;
}
.blog-card--featured .blog-card__date { color: rgba(255,255,255,0.45); }
.blog-card--featured .blog-card__cta { color: #fff; }
.blog-card__glow {
    position: absolute;
    top: -40%;
    right: -10%;
    width: 50%;
    height: 120%;
    background: radial-gradient(circle, rgba(37,99,235,0.35), transparent 70%);
    pointer-events: none;
}
.blog-card__inner { position: relative; z-index: 1; display: flex; flex-direction: column; gap: 1.5rem; }
.blog-card__accent {
    height: 4px;
    border-radius: 999px;
    margin-bottom: 1rem;
}
.blog-card__meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
}
.blog-card__tag {
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    background: #eff6ff;
    color: #2563eb;
}
.blog-card__read { color: #94a3b8; }
.blog-card__title {
    font-size: 1.125rem;
    font-weight: 700;
    color: #0f172a;
    line-height: 1.35;
    margin-bottom: 0.5rem;
}
.blog-card__excerpt {
    font-size: 0.9rem;
    line-height: 1.65;
    color: #64748b;
    flex: 1;
}
.blog-card__foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #f1f5f9;
}
.blog-card--featured .blog-card__foot { border-top-color: rgba(255,255,255,0.1); }
.blog-card__date { font-size: 0.8rem; color: #94a3b8; }
.blog-card__cta {
    font-size: 0.875rem;
    font-weight: 600;
    color: #2563eb;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}
.blog-card__arrow {
    width: 2rem;
    height: 2rem;
    border-radius: 999px;
    background: #f1f5f9;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
    transition: background 0.2s, color 0.2s;
}
.blog-card:hover .blog-card__arrow {
    background: #2563eb;
    color: #fff;
}

.blog-cat-btn {
    padding: 0.45rem 1rem;
    border: none;
    border-radius: 9999px;
    background: transparent;
    font-size: 0.875rem;
    font-weight: 500;
    color: #64748b;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.2s, color 0.2s;
}
.blog-cat-btn:hover { color: #0f172a; }
.blog-cat-btn.is-active {
    background: #0f172a;
    color: #fff;
    font-weight: 600;
}

.blog-pagination { margin-top: 2.5rem; }
.blog-pagination.hidden { display: none; }
.blog-pagination__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}
.blog-pagination__controls {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}
.blog-pagination__btn {
    min-width: 2.5rem;
    height: 2.5rem;
    padding: 0 0.5rem;
    border: 1px solid #e5e7eb;
    border-radius: 999px;
    background: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    color: #64748b;
    cursor: pointer;
    transition: all 0.2s;
}
.blog-pagination__btn:hover:not(:disabled) {
    border-color: #2563eb;
    color: #2563eb;
}
.blog-pagination__btn.is-active {
    background: #0f172a;
    border-color: #0f172a;
    color: #fff;
}
.blog-pagination__btn:disabled { opacity: 0.4; cursor: not-allowed; }
.blog-pagination__dots { padding: 0 0.5rem; color: #94a3b8; }
.blog-pagination__info { font-size: 0.875rem; color: #64748b; }

.blog-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    background: #fff;
    border: 1px dashed #e5e7eb;
    border-radius: 1.5rem;
}
.blog-empty__icon { font-size: 2.5rem; color: #94a3b8; margin-bottom: 1rem; }
.blog-empty__title { font-size: 1.125rem; font-weight: 700; color: #0f172a; margin-bottom: 0.5rem; }
.blog-empty__desc { color: #64748b; }

/* FAQ accordion */
.faq-stack { display: flex; flex-direction: column; gap: 0.75rem; }
.faq-item {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 1.25rem;
    overflow: hidden;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.faq-item:hover { border-color: rgba(37,99,235,0.25); }
.faq-item[open] {
    border-color: #2563eb;
    box-shadow: 0 12px 32px -8px rgba(37,99,235,0.12);
}
.faq-item summary {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    list-style: none;
    font-weight: 600;
    color: #0f172a;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-num {
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    color: #2563eb;
    flex-shrink: 0;
}
.faq-q {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.faq-q i { color: #94a3b8; transition: transform 0.2s; }
.faq-item[open] .faq-q i { transform: rotate(45deg); color: #2563eb; }
.faq-answer {
    padding: 0 1.5rem 1.25rem 3.25rem;
    font-size: 0.95rem;
    line-height: 1.7;
    color: #64748b;
}
.faq-answer a { color: #2563eb; }

/* Legal document */
.legal-toc {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 1.5rem;
    padding: 1rem;
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.04);
}
.legal-toc a {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.65rem 1rem;
    border-radius: 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: #64748b;
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
}
.legal-toc a i { font-size: 1rem; flex-shrink: 0; opacity: 0.7; }
.legal-toc a:hover {
    background: #f8fafc;
    color: #0f172a;
}
.legal-toc a.is-active {
    background: #eff6ff;
    color: #2563eb;
    font-weight: 600;
}
.legal-toc a.is-active i { opacity: 1; }
.legal-doc {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 2rem;
    padding: 2rem;
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.04);
}
@media (min-width: 768px) { .legal-doc { padding: 2.5rem 3rem; } }
.legal-doc .legal-section {
    margin-bottom: 2.75rem;
    padding-bottom: 2.75rem;
    border-bottom: 1px solid #f1f5f9;
}
.legal-doc .legal-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: 0;
}
.legal-doc h2 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.35rem;
    font-weight: 800;
    color: #0f172a;
    margin-bottom: 1.25rem;
    scroll-margin-top: 7rem;
}
.legal-doc h2::before {
    content: '';
    width: 4px;
    height: 1.25rem;
    border-radius: 999px;
    background: linear-gradient(180deg, #2563eb, #7c3aed);
    flex-shrink: 0;
}
.legal-doc p, .legal-doc li {
    font-size: 0.95rem;
    line-height: 1.75;
    color: #64748b;
}
.legal-doc p { margin-bottom: 1rem; }
.legal-doc p:last-child { margin-bottom: 0; }
.legal-doc strong { color: #0f172a; }
.legal-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
}
.legal-list li {
    padding: 0.75rem 0 0.75rem 1.25rem;
    border-bottom: 1px solid #f1f5f9;
    font-size: 0.95rem;
    line-height: 1.7;
    color: #64748b;
    position: relative;
}
.legal-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 1.15rem;
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: #2563eb;
    opacity: 0.45;
}
.legal-list li:last-child { border-bottom: 0; }
.legal-list strong { color: #0f172a; }
.legal-cta {
    border-radius: 2rem;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 32px 64px -16px rgba(15, 23, 42, 0.35);
    overflow: hidden;
    position: relative;
}
.legal-cta::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -10%;
    width: 50%;
    height: 120%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.3), transparent 70%);
    pointer-events: none;
}

/* Help topic cards */
.help-bento-card {
    padding: 1.75rem;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 1.5rem;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.help-bento-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px -10px rgba(0,0,0,0.06);
    border-color: rgba(37,99,235,0.2);
}

/* Console modals still use style.css — guest wall uses Tailwind only */
.site-console .page-main { padding-top: 0; }

/* Login auth tabs (login.html 不加载 style.css) */
.site-auth-tabs {
    display: flex;
    gap: 0.25rem;
    padding: 0.25rem;
    background: #f3f4f6;
    border-radius: 9999px;
}
.site-auth-tab {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    background: transparent;
    color: #6b7280;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}
.site-auth-tab.is-active {
    background: #fff;
    color: #0f172a;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

/* =========================================================
   Purchase page — single-column flow + bottom checkout
   ========================================================= */

/* Hero stats */
.purchase-hero-stat {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 1.1rem 1.25rem;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 1.25rem;
    text-align: left;
    box-shadow: 0 8px 24px -8px rgba(15, 23, 42, 0.06);
    transition: transform 0.2s, box-shadow 0.2s;
}
.purchase-hero-stat:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 40px -12px rgba(37, 99, 235, 0.1);
}
.purchase-hero-stat > i {
    font-size: 1.5rem;
    color: #2563eb;
    flex-shrink: 0;
}
.purchase-hero-stat__val {
    font-size: 0.95rem;
    font-weight: 800;
    color: #0f172a;
    line-height: 1.2;
}
.purchase-hero-stat__label {
    font-size: 0.75rem;
    color: #6b7280;
    font-weight: 500;
}

/* Progress stepper */
.purchase-progress {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-bottom: 2.5rem;
    padding: 0.5rem;
}
.purchase-progress__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    min-width: 4.5rem;
}
.purchase-progress__dot {
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: #fff;
    border: 2px solid #e5e7eb;
    color: #9ca3af;
    font-size: 0.75rem;
    font-weight: 800;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.purchase-progress__item.is-active .purchase-progress__dot {
    background: #0f172a;
    border-color: #0f172a;
    color: #fff;
}
.purchase-progress__label {
    font-size: 0.68rem;
    font-weight: 600;
    color: #9ca3af;
    white-space: nowrap;
}
.purchase-progress__item.is-active .purchase-progress__label { color: #0f172a; }
.purchase-progress__line {
    flex: 1;
    max-width: 3rem;
    height: 2px;
    background: #e5e7eb;
    margin-bottom: 1.25rem;
}
@media (max-width: 480px) {
    .purchase-progress__label { display: none; }
    .purchase-progress__line { max-width: 1.5rem; }
}

/* Content blocks */
.purchase-block {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 1.75rem;
    padding: 1.75rem;
    margin-bottom: 1.25rem;
    box-shadow: 0 8px 32px -12px rgba(15, 23, 42, 0.06);
}
@media (min-width: 640px) {
    .purchase-block { padding: 2rem 2.25rem; }
}
.purchase-block--cycle {
    text-align: center;
    background: linear-gradient(180deg, #fff 0%, #f8fafc 100%);
}
.purchase-block--checkout {
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0;
}
.purchase-block__head {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.purchase-block__head--center {
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: 1.25rem;
}
.purchase-block__step {
    flex-shrink: 0;
    width: 2.25rem;
    height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.65rem;
    background: #0f172a;
    color: #fff;
    font-size: 0.72rem;
    font-weight: 800;
}
.purchase-block__kicker {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #2563eb;
    margin-bottom: 0.25rem;
}
.purchase-block__title {
    font-size: 1.35rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    color: #0f172a;
    line-height: 1.2;
}
@media (min-width: 640px) {
    .purchase-block__title { font-size: 1.5rem; }
}
.purchase-block__desc {
    font-size: 0.875rem;
    color: #6b7280;
    margin-top: 0.25rem;
    line-height: 1.5;
}

/* Billing period tabs */
.purchase-period-tabs { margin-bottom: 0; }
.purchase-period-tabs .purchase-cycle-btn {
    border: none;
    background: transparent;
    padding: 0.45rem 0.95rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
    color: #6b7280;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.2s, color 0.2s;
}
.purchase-period-tabs .purchase-cycle-btn:hover { color: #0f172a; }
.purchase-period-tabs .purchase-cycle-btn.is-active {
    background: #0f172a;
    color: #fff;
    font-weight: 600;
}
.purchase-cycle-discount {
    font-size: 0.62rem;
    font-weight: 800;
    color: #2563eb;
    margin-left: 0.1rem;
}
.purchase-period-tabs .purchase-cycle-btn.is-active .purchase-cycle-discount { color: #93c5fd; }
.purchase-cycle-hint {
    margin-top: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: #6b7280;
}

/* Plan cards */
.purchase-plan-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.purchase-plan-card {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    border-radius: 1.25rem;
    border: 1.5px solid #e5e7eb;
    background: #f8f9fa;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s, background 0.2s;
    overflow: visible;
}
@media (min-width: 768px) {
    .purchase-plan-card {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        padding: 1.75rem 2rem;
        gap: 1.5rem;
    }
}
.purchase-plan-card:hover {
    border-color: rgba(37, 99, 235, 0.35);
    background: #fff;
    box-shadow: 0 12px 36px -10px rgba(37, 99, 235, 0.1);
    transform: translateY(-1px);
}
.purchase-plan-card.is-active {
    border-color: #2563eb;
    background: #fff;
    box-shadow: 0 0 0 1px #2563eb, 0 16px 48px -12px rgba(37, 99, 235, 0.18);
}
.purchase-plan-card--featured { margin-top: 0.5rem; }
.purchase-plan-badge {
    position: absolute;
    top: -0.65rem;
    left: 1.25rem;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.3rem 0.75rem;
    border-radius: 999px;
    background: linear-gradient(135deg, #2563eb, #9333ea);
    color: #fff;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}
.purchase-plan-body { flex: 1; min-width: 0; }
.purchase-plan-tier {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #9ca3af;
    margin-bottom: 0.3rem;
}
.purchase-plan-name {
    font-size: 1.25rem;
    font-weight: 900;
    color: #0f172a;
    margin-bottom: 0.3rem;
}
.purchase-plan-desc {
    font-size: 0.84rem;
    color: #6b7280;
    margin-bottom: 0.85rem;
    line-height: 1.5;
    max-width: 32rem;
}
.purchase-plan-specs-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: #374151;
}
.purchase-plan-specs-row span {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}
.purchase-plan-specs-row i { color: #9ca3af; }
.purchase-plan-card.is-active .purchase-plan-specs-row i { color: #2563eb; }
.purchase-plan-aside {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    padding-top: 1rem;
    border-top: 1px solid #e5e7eb;
    width: 100%;
}
@media (min-width: 768px) {
    .purchase-plan-aside {
        width: auto;
        min-width: 8.5rem;
        align-items: flex-end;
        padding-top: 0;
        padding-left: 1.5rem;
        border-top: none;
        border-left: 1px solid #e5e7eb;
    }
}
.purchase-plan-price {
    display: flex;
    align-items: baseline;
    gap: 0.15rem;
}
.purchase-plan-amount {
    font-size: 2rem;
    font-weight: 900;
    color: #0f172a;
    line-height: 1;
}
.purchase-plan-unit {
    font-size: 0.85rem;
    font-weight: 500;
    color: #6b7280;
}
.purchase-plan-check {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.75rem;
    font-weight: 700;
    color: #2563eb;
    opacity: 0;
    transition: opacity 0.2s;
}
.purchase-plan-card.is-active .purchase-plan-check { opacity: 1; }

/* Region cards */
.purchase-region-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.65rem;
}
@media (min-width: 640px) {
    .purchase-region-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.75rem; }
}
@media (min-width: 900px) {
    .purchase-region-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
}
.purchase-region-card {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 1rem;
    border-radius: 1rem;
    border: 1.5px solid #e5e7eb;
    background: #f8f9fa;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s, background 0.2s;
}
.purchase-region-card:hover {
    border-color: rgba(37, 99, 235, 0.35);
    background: #fff;
    transform: translateY(-1px);
    box-shadow: 0 8px 24px -8px rgba(37, 99, 235, 0.1);
}
.purchase-region-card.is-active {
    border-color: #2563eb;
    background: #fff;
    box-shadow: 0 0 0 1px #2563eb, 0 8px 24px -6px rgba(37, 99, 235, 0.15);
}
.purchase-region-card__top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}
.purchase-region-card__code {
    font-size: 0.62rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    color: #9ca3af;
}
.purchase-region-card__flag {
    font-size: 1.35rem;
    line-height: 1;
    margin-bottom: 0.35rem;
}
.purchase-region-card__name {
    font-size: 0.92rem;
    font-weight: 800;
    color: #0f172a;
    margin-bottom: 0.15rem;
}
.purchase-region-card__route {
    font-size: 0.72rem;
    color: #6b7280;
    line-height: 1.35;
}
.purchase-region-card__check {
    position: absolute;
    top: 0.6rem;
    right: 0.6rem;
    font-size: 1rem;
    color: #2563eb;
    opacity: 0;
    transition: opacity 0.2s;
}
.purchase-region-card.is-active .purchase-region-card__check { opacity: 1; }

/* Addons — light cards */
.purchase-addon-stack {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.purchase-addon-light {
    padding: 1.25rem;
    border-radius: 1.25rem;
    border: 1px solid #e5e7eb;
    background: #f8f9fa;
}
.purchase-addon-light__head {
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    margin-bottom: 1rem;
}
.purchase-addon-light__icon {
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.75rem;
    background: #eff6ff;
    color: #2563eb;
    font-size: 1.15rem;
    flex-shrink: 0;
}
.purchase-addon-light__head h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 0.15rem;
}
.purchase-addon-light__head p {
    font-size: 0.78rem;
    color: #6b7280;
}
.purchase-ssd-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.5rem;
}
@media (min-width: 640px) {
    .purchase-ssd-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.purchase-ssd-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.15rem;
    padding: 0.8rem 0.65rem;
    border: 1.5px solid #e5e7eb;
    border-radius: 0.85rem;
    background: #fff;
    color: #374151;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    transition: border-color 0.2s, background 0.2s, color 0.2s, box-shadow 0.2s;
    text-align: center;
}
.purchase-ssd-btn:hover {
    border-color: rgba(37, 99, 235, 0.35);
    color: #0f172a;
}
.purchase-ssd-btn.is-active {
    border-color: #2563eb;
    background: #eff6ff;
    color: #1d4ed8;
    box-shadow: 0 0 0 1px #2563eb;
}
.purchase-ssd-btn .ssd-addon-price {
    font-size: 0.7rem;
    font-weight: 700;
    color: #6b7280;
}
.purchase-ssd-btn.is-active .ssd-addon-price { color: #2563eb; }

.purchase-tb5-light {
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    padding: 1.25rem;
    border-radius: 1.25rem;
    border: 1.5px solid #e5e7eb;
    background: #f8f9fa;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}
.purchase-tb5-light:hover {
    border-color: rgba(37, 99, 235, 0.3);
    background: #fff;
}
.purchase-tb5-check {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}
.purchase-tb5-box {
    flex-shrink: 0;
    width: 1.25rem;
    height: 1.25rem;
    margin-top: 0.1rem;
    border-radius: 0.35rem;
    border: 2px solid #d1d5db;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, border-color 0.2s;
}
.purchase-tb5-box i {
    font-size: 0.65rem;
    color: #fff;
    opacity: 0;
}
.purchase-tb5-check:checked ~ .purchase-tb5-box {
    background: #2563eb;
    border-color: #2563eb;
}
.purchase-tb5-check:checked ~ .purchase-tb5-box i { opacity: 1; }
.purchase-tb5-check:checked ~ .purchase-tb5-copy .purchase-tb5-title { color: #1d4ed8; }
.purchase-tb5-light:has(.purchase-tb5-check:checked) {
    border-color: #2563eb;
    background: #eff6ff;
    box-shadow: 0 0 0 1px #2563eb;
}
.purchase-tb5-copy { flex: 1; min-width: 0; }
.purchase-tb5-title {
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 0.2rem;
    transition: color 0.2s;
}
.purchase-tb5-price {
    font-size: 0.78rem;
    font-weight: 600;
    color: #2563eb;
    margin-left: 0.2rem;
}
.purchase-tb5-desc {
    display: block;
    font-size: 0.75rem;
    color: #6b7280;
    line-height: 1.45;
}
.purchase-tb5-icon {
    flex-shrink: 0;
    width: 2.25rem;
    height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.65rem;
    background: #fef3c7;
    color: #d97706;
    font-size: 1rem;
}

/* Bottom checkout panel */
.purchase-order-panel {
    position: relative;
    overflow: hidden;
    border-radius: 1.75rem;
    background: linear-gradient(145deg, #0b1220 0%, #0f172a 50%, #111827 100%);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 32px 80px -20px rgba(15, 23, 42, 0.45);
}
.purchase-order-glow {
    position: absolute;
    top: -60px;
    left: 50%;
    transform: translateX(-50%);
    width: 400px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.22), transparent 70%);
    pointer-events: none;
}
.purchase-order-inner--bottom {
    position: relative;
    z-index: 1;
    padding: 1.5rem;
}
@media (min-width: 768px) {
    .purchase-order-inner--bottom { padding: 2rem 2.25rem; }
}
.purchase-order-items {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.65rem;
    margin-bottom: 1.5rem;
}
@media (min-width: 640px) {
    .purchase-order-items { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
.purchase-order-cell {
    padding: 0.85rem 1rem;
    border-radius: 0.85rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
}
.purchase-order-cell.is-addon {
    background: rgba(37, 99, 235, 0.1);
    border-color: rgba(147, 197, 253, 0.2);
}
.purchase-order-cell__label {
    display: block;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.45);
    margin-bottom: 0.3rem;
}
.purchase-order-cell__value {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.35;
}
.purchase-order-cell__value small {
    font-size: 0.7rem;
    font-weight: 500;
    opacity: 0.55;
    margin-left: 0.15rem;
}
.purchase-order-cell.is-addon .purchase-order-cell__value { color: #93c5fd; }

.purchase-order-bottom {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    padding-top: 1.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}
@media (min-width: 768px) {
    .purchase-order-bottom {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: 1.5rem;
    }
}
.purchase-order-total-wrap {
    text-align: center;
}
@media (min-width: 768px) {
    .purchase-order-total-wrap { text-align: left; }
}
.purchase-order-total-label {
    display: block;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.45);
    margin-bottom: 0.25rem;
}
.purchase-order-total-price {
    font-size: clamp(2rem, 5vw, 2.75rem);
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 1;
    color: #fff;
}
.purchase-order-total-unit {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.5);
}
.purchase-checkout-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    height: 3.5rem;
    border: none;
    border-radius: 9999px;
    background: #fff;
    color: #0f172a;
    font-size: 1rem;
    font-weight: 800;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
    font-family: inherit;
    flex-shrink: 0;
}
@media (min-width: 768px) {
    .purchase-checkout-btn {
        width: auto;
        min-width: 14rem;
        padding: 0 2rem;
    }
}
.purchase-checkout-btn:hover {
    background: #f1f5f9;
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}
.purchase-checkout-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
}
.purchase-order-trust {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem 1rem;
}
@media (min-width: 768px) {
    .purchase-order-trust {
        flex-direction: column;
        align-items: flex-end;
        justify-content: center;
    }
}
.purchase-order-trust li {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.7rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.4);
    white-space: nowrap;
}
.purchase-order-trust i { color: rgba(147, 197, 253, 0.85); font-size: 0.8rem; }

/* Delivery timeline */
.purchase-timeline-card {
    position: relative;
    padding: 1.75rem 1.25rem;
    border-radius: 1.5rem;
    background: #f8f9fa;
    border: 1px solid #e5e7eb;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}
.purchase-timeline-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 40px -12px rgba(15, 23, 42, 0.08);
}
.purchase-timeline-card--done {
    background: linear-gradient(165deg, rgba(37, 99, 235, 0.06) 0%, #fff 60%);
    border-color: rgba(37, 99, 235, 0.2);
}
.purchase-timeline-num {
    position: absolute;
    top: 1rem;
    left: 1rem;
    width: 1.75rem;
    height: 1.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: #fff;
    border: 2px solid #2563eb;
    color: #2563eb;
    font-size: 0.75rem;
    font-weight: 800;
}
.purchase-timeline-card--done .purchase-timeline-num {
    background: #2563eb;
    color: #fff;
    border-color: #2563eb;
}
.purchase-timeline-icon {
    font-size: 2.25rem;
    color: #2563eb;
    margin-bottom: 0.85rem;
    display: block;
}
.purchase-timeline-card h3 {
    font-size: 1rem;
    font-weight: 800;
    color: #0f172a;
    margin-bottom: 0.4rem;
}
.purchase-timeline-card p {
    font-size: 0.8rem;
    color: #6b7280;
    line-height: 1.5;
}

/* Payment modal */
.purchase-modal.flex,
#paymentResultModal.flex { display: flex !important; }
.purchase-modal.hidden,
#paymentResultModal.hidden { display: none !important; }
.purchase-modal-card {
    background: #fff;
    padding: 2rem;
    max-width: 22rem;
    width: 100%;
    text-align: center;
    border-radius: 1.5rem;
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.18);
    border: 1px solid #e5e7eb;
}
.purchase-modal-icon { margin-bottom: 1rem; font-size: 2.5rem; }
.purchase-modal-title {
    font-size: 1.2rem;
    font-weight: 800;
    color: #0f172a;
    margin-bottom: 0.5rem;
}
.purchase-modal-message {
    font-size: 0.88rem;
    color: #6b7280;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}
.purchase-modal-actions {
    display: flex;
    gap: 0.65rem;
    justify-content: center;
    flex-wrap: wrap;
}
.purchase-modal-btn {
    padding: 0.7rem 1.35rem;
    border-radius: 9999px;
    font-size: 0.88rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.2s;
}
.purchase-modal-btn--ghost {
    background: #f3f4f6;
    color: #0f172a;
}
.purchase-modal-btn--ghost:hover { background: #e5e7eb; }
.purchase-modal-btn--primary {
    background: #2563eb;
    color: #fff;
}
.purchase-modal-btn--primary:hover { background: #1d4ed8; }

/* ── Payment gateway modal ── */
#paymentModal.flex { display: flex !important; }
#paymentModal.hidden { display: none !important; }

.payment-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.payment-modal__card {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 26rem;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    background: #fff;
    border-radius: 1.5rem;
    border: 1px solid rgba(226, 232, 240, 0.9);
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.6) inset,
        0 32px 80px -20px rgba(15, 23, 42, 0.28);
    overflow: hidden;
    animation: paymentModalIn 0.32s cubic-bezier(0.34, 1.4, 0.64, 1) forwards;
}

@keyframes paymentModalIn {
    from { opacity: 0; transform: scale(0.96) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.payment-modal__accent {
    height: 3px;
    background: linear-gradient(90deg, #2563eb 0%, #7c3aed 50%, #06b6d4 100%);
}

.payment-modal__close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border: none;
    border-radius: 999px;
    background: #f1f5f9;
    color: #64748b;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, transform 0.15s;
}
.payment-modal__close:hover {
    background: #e2e8f0;
    color: #0f172a;
    transform: scale(1.05);
}

.payment-modal__header {
    padding: 1.75rem 1.75rem 0;
    text-align: center;
}

.payment-modal__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    margin-bottom: 0.75rem;
    border-radius: 999px;
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    color: #2563eb;
    font-size: 1.5rem;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.15);
}

.payment-modal__eyebrow {
    display: inline-block;
    margin-bottom: 0.5rem;
    padding: 0.2rem 0.65rem;
    border-radius: 999px;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #2563eb;
    background: rgba(37, 99, 235, 0.08);
    border: 1px solid rgba(37, 99, 235, 0.15);
}

.payment-modal__title {
    margin: 0 0 0.35rem;
    font-size: 1.25rem;
    font-weight: 800;
    color: #0f172a;
    letter-spacing: -0.02em;
}

.payment-modal__subtitle {
    margin: 0;
    font-size: 0.82rem;
    color: #64748b;
    line-height: 1.5;
}

.payment-modal__body {
    flex: 1;
    overflow-y: auto;
    min-height: 0;
    padding: 1.25rem 1.75rem 0;
}

.payment-gateway-list {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.payment-gateway-item {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.9rem 1rem;
    border-radius: 1rem;
    border: 1.5px solid #e2e8f0;
    background: #fafbfc;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s, box-shadow 0.2s, transform 0.15s;
}
.payment-gateway-item:hover {
    border-color: #93c5fd;
    background: #fff;
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.08);
    transform: translateY(-1px);
}
.payment-gateway-item.is-selected {
    border-color: #2563eb;
    background: linear-gradient(135deg, #eff6ff 0%, #f8fafc 100%);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}
.payment-gateway-item.is-loading {
    opacity: 0.7;
    pointer-events: none;
}

.payment-gateway-item__logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 0.75rem;
    background: #fff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 2px 6px rgba(15, 23, 42, 0.04);
    overflow: hidden;
}
.payment-gateway-item__logo img {
    object-fit: contain;
    max-width: 100%;
    max-height: 100%;
}
.payment-gateway-item__logo .ph {
    font-size: 1.25rem;
    color: #94a3b8;
}

.payment-gateway-item__info {
    flex: 1;
    min-width: 0;
}

.payment-gateway-item__title {
    font-size: 0.9rem;
    font-weight: 700;
    color: #0f172a;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.payment-gateway-item__code {
    margin-top: 0.1rem;
    font-size: 0.72rem;
    font-weight: 500;
    color: #94a3b8;
    text-transform: capitalize;
}

.payment-gateway-item__arrow {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: #cbd5e1;
    transition: color 0.2s;
}
.payment-gateway-item:hover .payment-gateway-item__arrow,
.payment-gateway-item.is-selected .payment-gateway-item__arrow {
    color: #2563eb;
}
.payment-gateway-item__arrow .ph {
    font-size: 1rem;
}

.payment-gateway-item__spinner {
    animation: paymentSpin 0.8s linear infinite;
}
@keyframes paymentSpin {
    to { transform: rotate(360deg); }
}

.payment-form-section__inner {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #e2e8f0;
}
.payment-form-section__title {
    margin: 0 0 0.75rem;
    font-size: 0.88rem;
    font-weight: 700;
    color: #0f172a;
}

.payment-modal__hint {
    display: flex;
    align-items: flex-start;
    gap: 0.4rem;
    margin: 1rem 1.75rem 0;
    padding: 0.65rem 0.85rem;
    border-radius: 0.75rem;
    font-size: 0.72rem;
    line-height: 1.55;
    color: #64748b;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
}
.payment-modal__hint .ph {
    flex-shrink: 0;
    margin-top: 0.1rem;
    font-size: 0.85rem;
    color: #94a3b8;
}

.payment-modal__cancel {
    margin: 1rem 1.75rem 1.5rem;
    width: calc(100% - 3.5rem);
    padding: 0.75rem 1rem;
    border: 1.5px solid #e2e8f0;
    border-radius: 999px;
    background: #fff;
    color: #475569;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.payment-modal__cancel:hover {
    background: #f1f5f9;
    border-color: #cbd5e1;
    color: #0f172a;
}

/* ── 纯 CSS 视觉组件（替代旧摄影图） ── */
.ui-visual {
    position: relative;
    width: 100%;
    min-height: 280px;
}
.ui-visual__glow {
    position: absolute;
    inset: -20%;
    background: radial-gradient(circle at 30% 40%, rgba(37, 99, 235, 0.22), transparent 55%),
                radial-gradient(circle at 70% 60%, rgba(147, 51, 234, 0.18), transparent 50%);
    pointer-events: none;
}
.ui-visual__card {
    position: relative;
    border-radius: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: linear-gradient(145deg, #0f172a 0%, #1e293b 100%);
    box-shadow: 0 32px 64px -16px rgba(15, 23, 42, 0.45);
    overflow: hidden;
}
.ui-visual__toolbar {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.85rem 1rem;
    background: rgba(0, 0, 0, 0.25);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.ui-visual__toolbar span:first-child,
.ui-visual__toolbar span:nth-child(2),
.ui-visual__toolbar span:nth-child(3) {
    width: 0.55rem;
    height: 0.55rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.2);
}
.ui-visual__toolbar span:first-child { background: #f87171; }
.ui-visual__toolbar span:nth-child(2) { background: #fbbf24; }
.ui-visual__toolbar span:nth-child(3) { background: #34d399; }
.ui-visual__toolbar-title {
    margin-left: 0.5rem;
    font-size: 0.72rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.55);
    letter-spacing: 0.04em;
}
.ui-visual__body {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 0.75rem;
    padding: 1rem;
    min-height: 220px;
}
.ui-visual__rail {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.ui-visual__node {
    padding: 0.65rem 0.75rem;
    border-radius: 0.75rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 0.72rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.5);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.ui-visual__node::before {
    content: '';
    width: 0.45rem;
    height: 0.45rem;
    border-radius: 999px;
    background: #64748b;
}
.ui-visual__node.is-active {
    background: rgba(37, 99, 235, 0.2);
    border-color: rgba(96, 165, 250, 0.35);
    color: #fff;
}
.ui-visual__node.is-active::before {
    background: #34d399;
    box-shadow: 0 0 8px rgba(52, 211, 153, 0.6);
}
.ui-visual__detail {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    padding: 0.5rem;
}
.ui-visual__stat {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-size: 0.68rem;
    color: rgba(255, 255, 255, 0.45);
    font-weight: 600;
}
.ui-visual__bar {
    flex: 1;
    height: 0.35rem;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 999px;
    overflow: hidden;
}
.ui-visual__bar i {
    display: block;
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, #2563eb, #7c3aed);
}
.ui-visual__cmd {
    margin-top: 0.25rem;
    padding: 0.65rem 0.75rem;
    border-radius: 0.65rem;
    background: rgba(0, 0, 0, 0.35);
    font-family: ui-monospace, monospace;
    font-size: 0.68rem;
    color: #34d399;
}
.ui-visual--chip {
    min-height: 400px;
    border-radius: 2.5rem;
    background: linear-gradient(135deg, #eff6ff 0%, #f8fafc 50%, #ede9fe 100%);
    border: 1px solid #e5e7eb;
    box-shadow: 0 24px 48px -12px rgba(37, 99, 235, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.ui-visual--chip .ui-chip-core {
    position: relative;
    width: 11rem;
    height: 11rem;
    border-radius: 2rem;
    background: linear-gradient(145deg, #1e293b, #0f172a);
    box-shadow: 0 20px 50px -10px rgba(15, 23, 42, 0.5),
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}
.ui-visual--chip .ui-chip-core::before {
    content: '';
    position: absolute;
    inset: 12%;
    border-radius: 1.25rem;
    border: 2px solid rgba(96, 165, 250, 0.25);
}
.ui-visual--chip .ui-chip-core span {
    font-size: 1.75rem;
    font-weight: 900;
    color: transparent;
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    background-clip: text;
}
.ui-visual--chip .ui-chip-ring {
    position: absolute;
    width: 16rem;
    height: 16rem;
    border-radius: 999px;
    border: 1px dashed rgba(37, 99, 235, 0.2);
    animation: ui-spin-slow 24s linear infinite;
}
.ui-visual--remote {
    min-height: 400px;
    border-radius: 2.5rem;
    background: linear-gradient(160deg, #f8fafc, #eef2ff);
    border: 1px solid #e5e7eb;
    box-shadow: 0 24px 48px -12px rgba(99, 102, 241, 0.12);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
}
.ui-visual--remote .ui-device-row {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.ui-visual--remote .ui-device {
    width: 4.5rem;
    height: 3rem;
    border-radius: 0.65rem;
    background: #fff;
    border: 1px solid #e5e7eb;
    box-shadow: 0 8px 20px -6px rgba(0, 0, 0, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}
.ui-visual--remote .ui-device--hub {
    width: 5.5rem;
    height: 5.5rem;
    border-radius: 1.25rem;
    background: linear-gradient(145deg, #2563eb, #1d4ed8);
    color: #fff;
    font-size: 1.75rem;
    box-shadow: 0 16px 40px -8px rgba(37, 99, 235, 0.45);
}
.ui-visual--remote .ui-connect-line {
    width: 2rem;
    height: 2px;
    background: linear-gradient(90deg, #cbd5e1, #2563eb, #cbd5e1);
}
.ui-visual--about {
    min-height: 420px;
    border-radius: 2.5rem;
    background: linear-gradient(145deg, #0f172a 0%, #1e3a5f 100%);
    padding: 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 32px 64px -16px rgba(15, 23, 42, 0.35);
}
.ui-visual--about .ui-about-stat {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 1.25rem;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}
.ui-visual--about .ui-about-stat strong {
    font-size: 2rem;
    font-weight: 900;
    color: #fff;
    line-height: 1;
}
.ui-visual--about .ui-about-stat span {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.45);
    font-weight: 600;
    margin-top: 0.35rem;
}
.ui-visual--about .ui-about-stat--wide {
    grid-column: span 2;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.35), rgba(124, 58, 237, 0.2));
}
.dc-mesh {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(37, 99, 235, 0.15), transparent 45%),
        radial-gradient(circle at 80% 70%, rgba(124, 58, 237, 0.12), transparent 40%),
        linear-gradient(180deg, #0f172a 0%, #0c1222 100%);
}
.dc-mesh::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px);
    background-size: 24px 24px;
    opacity: 0.35;
}
.step-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 1.5rem;
    padding: 1.75rem 1.5rem;
    text-align: center;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.step-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -12px rgba(37, 99, 235, 0.12);
    border-color: rgba(37, 99, 235, 0.2);
}
.step-card__num {
    width: 3rem;
    height: 3rem;
    margin: 0 auto 1rem;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 1.1rem;
}
.step-card__num--primary {
    background: #2563eb;
    color: #fff;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
}
.step-card__num--outline {
    background: #fff;
    border: 2px solid #2563eb;
    color: #2563eb;
}
@keyframes ui-spin-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
@media (max-width: 640px) {
    .ui-visual__body { grid-template-columns: 1fr; }
    .ui-visual--about { grid-template-columns: 1fr; min-height: 360px; }
    .ui-visual--about .ui-about-stat--wide { grid-column: span 1; }
}