:root {
    --bg-0: #060816;
    --bg-1: #0b0e1e;
    --bg-2: #11142a;
    --line: rgba(255, 255, 255, 0.08);
    --primary: #6366f1;
    --primary-2: #7c3aed;
    --primary-hover: #818cf8;
    --secondary-bg: rgba(255, 255, 255, 0.06);
    --secondary-bg-hover: rgba(255, 255, 255, 0.12);
    --text: #ffffff;
    --text-2: #cbd5e1;
    --text-3: #94a3b8;
    --text-4: #64748b;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --header-h: 64px;
    --container: 1200px;
    --type-prose-space:   1rem;
    --type-heading-space: 1.25rem;
}

* { box-sizing: border-box; }

html {
    min-height: 100%;
}

html, body { margin: 0; padding: 0; }

body {
    background: var(--bg-1);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
}

img, svg { display: block; max-width: 100%; height: auto; }

a { color: var(--primary-hover); text-decoration: none; }
a:hover { color: var(--text); }

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}
.skip-link:focus {
    position: fixed;
    left: 16px;
    top: 16px;
    width: auto;
    height: auto;
    padding: 8px 12px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius-sm);
    z-index: 1000;
}

main {
    flex: 1 1 auto;
    width: 100%;
    min-height: 0;
}


.site-header {
    flex-shrink: 0;
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(11, 14, 30, 0.85);
    backdrop-filter: saturate(140%) blur(10px);
    -webkit-backdrop-filter: saturate(140%) blur(10px);
    border-bottom: 1px solid var(--line);
}

.header-grid {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
    min-height: var(--header-h);
}

.logo {
    grid-column: 1;
    grid-row: 1;
    display: inline-flex;
    align-items: center;
}
.logo img { height: 22px; width: auto; }

.header-bar {
    grid-column: 3;
    grid-row: 1;
    display: flex;
    align-items: center;
    gap: 8px;
}

.primary-nav {
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
}
.primary-nav__list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 6px;
    justify-content: center;
    flex-wrap: wrap;
}
.primary-nav__item + .primary-nav__item {
    margin-top: 0;
}

.primary-nav a {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0 12px;
    color: var(--text-3);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    transition: color .15s, background .15s;
}
.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
    color: var(--text);
    background: var(--secondary-bg);
}

.header-cta {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-backdrop {
    display: none;
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 0;
    border-radius: var(--radius-sm);
    background: var(--secondary-bg);
    color: var(--text);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background .15s ease;
}
.menu-toggle:hover {
    background: var(--secondary-bg-hover);
}
.menu-toggle__lines {
    position: relative;
    display: block;
    width: 20px;
    height: 14px;
}
.menu-toggle__line {
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    transition: transform .22s ease, opacity .15s ease, top .22s ease;
}
.menu-toggle__line:nth-child(1) { top: 0; }
.menu-toggle__line:nth-child(2) { top: 7px; }
.menu-toggle__line:nth-child(3) { top: 14px; }
.menu-toggle.is-open .menu-toggle__line:nth-child(1) {
    top: 7px;
    transform: rotate(45deg);
}
.menu-toggle.is-open .menu-toggle__line:nth-child(2) {
    opacity: 0;
}
.menu-toggle.is-open .menu-toggle__line:nth-child(3) {
    top: 7px;
    transform: rotate(-45deg);
}

body.nav-open {
    overflow: hidden;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 16px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 14px;
    line-height: 1;
    border: 0;
    cursor: pointer;
    transition: transform .1s ease, background .15s ease, color .15s ease, box-shadow .15s ease;
    white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    color: #fff;
    box-shadow: 0 6px 18px rgba(99, 102, 241, 0.35);
}
.btn-primary:hover { color: #fff; filter: brightness(1.07); }

.btn-secondary {
    background: var(--secondary-bg);
    color: var(--text);
}
.btn-secondary:hover { background: var(--secondary-bg-hover); color: #fff; }


.page-hero.page-hero--duel {
    margin: clamp(16px, 2.5vw, 24px) 0 0px;
    padding: 0 0 28px;
    border-bottom: 1px solid var(--line);
}
.page-hero--duel__wrap {
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--line);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
}
.page-hero--duel__stack {
    position: relative;
    padding: clamp(26px, 4vw, 44px) clamp(20px, 3.5vw, 36px) clamp(32px, 4.5vw, 52px) clamp(24px, 3.5vw, 40px);
    background:
        radial-gradient(120% 80% at 100% 0%, rgba(124, 58, 237, 0.15), transparent 55%),
        var(--bg-2);
}
.page-hero--duel__stack::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 5px;
    background: linear-gradient(180deg, var(--primary-hover), var(--primary-2));
    box-shadow: inset -1px 0 0 rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}
.page-hero--duel__badges {
    list-style: none;
    margin: 0 0 18px;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.page-hero--duel__pill {
    display: inline-block;
    padding: 5px 11px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-3);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
}
.page-hero--duel__pill--age {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.1);
}
.page-hero--duel__pill--vip {
    color: #fef3c7;
    border-color: rgba(251, 191, 36, 0.35);
    background: rgba(251, 191, 36, 0.1);
}
.page-hero--duel__pill--crypto {
    color: #e0e7ff;
    border-color: rgba(129, 140, 248, 0.45);
    background: rgba(99, 102, 241, 0.15);
}
.page-hero--duel__pill--live {
    color: #bbf7d0;
    border-color: rgba(52, 211, 153, 0.35);
    background: rgba(16, 185, 129, 0.12);
}
.page-hero--duel__perks-title {
    margin: 0 0 8px;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-3);
}
.page-hero--duel__perks {
    list-style: none;
    margin: 0 0 28px;
    padding: 0 0 0 18px;
    border-left: 2px solid rgba(124, 58, 237, 0.5);
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-2);
}
.page-hero--duel__headline {
    margin: 0 0 12px;
    font-size: clamp(1.1rem, 2.4vw, 1.55rem);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.02em;
    color: var(--text);
}
.page-hero--duel__text {
    margin: 0 0 18px;
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-2);
}
.page-hero--duel__cta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: stretch;
}
.page-hero--duel__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 15px;
    text-decoration: none;
    transition: transform 0.12s ease, box-shadow 0.2s ease, filter 0.15s ease;
    border: 0;
}
.page-hero--duel__btn:hover {
    transform: translateY(-2px);
}
.page-hero--duel__btn--main {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    box-shadow:
        0 12px 32px rgba(99, 102, 241, 0.45),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}
.page-hero--duel__btn--main:hover {
    filter: brightness(1.08);
    box-shadow: 0 16px 40px rgba(124, 58, 237, 0.5);
}
.page-hero--duel__btn--side {
    color: var(--text);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.04));
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.page-hero--duel__btn--side:hover {
    background: var(--secondary-bg-hover);
    border-color: rgba(255, 255, 255, 0.2);
}

@media (max-width: 760px) {
    .page-hero--duel__cta {
        flex-wrap: nowrap;
        gap: 8px;
    }
    .page-hero--duel__btn {
        flex: 1 1 0;
        min-width: 0;
        min-height: 44px;
        padding: 10px 12px;
        font-size: 12px;
        white-space: nowrap;
    }
}


.breadcrumbs {
    flex-shrink: 0;
    background: var(--bg-1);
    border-bottom: 1px solid var(--line);
    padding: 8px 0;
    color: var(--text-4);
    font-size: 13px;
}
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin: 0; padding: 0; }
.breadcrumbs li + li::before { content: "/"; margin-right: 6px; color: var(--text-4); }
.breadcrumbs a { color: var(--text-3); }
.breadcrumbs a:hover { color: var(--text); }
.breadcrumbs [aria-current="page"] span { color: var(--text-2); }


.page {
    padding: 20px 0 64px;
}
.page h1 {
    font-size: clamp(28px, 4vw, 40px);
    line-height: 1.2;
    margin-block: var(--type-heading-space);
    margin-inline: 0;
    letter-spacing: -0.01em;
}
.page h2 {
    font-size: clamp(22px, 2.75vw, 30px);
    line-height: 1.2;
    margin-block: var(--type-heading-space);
    margin-inline: 0;
}
.page h3 {
    font-size: clamp(18px, 2.1vw, 22px);
    line-height: 1.2;
    margin-block: var(--type-heading-space);
    margin-inline: 0;
}
.page h4 {
    font-size: clamp(16px, 1.65vw, 19px);
    line-height: 1.2;
    margin-block: var(--type-heading-space);
    margin-inline: 0;
}
.page .container > :is(h1, h2, h3, h4):first-child {
    margin-block-start: 0;
}
.page p {
    margin: 0 0 var(--type-prose-space);
    color: var(--text-2);
}
.page li { color: var(--text-2); }
.page ul,
.page ol {
    margin: 0 0 var(--type-prose-space);
    padding-left: 1.25em;
}

.table-scroll,
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
    margin: 0 0 var(--type-prose-space);
}
.table-scroll > table,
.table-responsive > table {
    width: 100%;
    min-width: max-content;
    border-collapse: collapse;
    font-size: 14px;
    line-height: 1.45;
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    overflow: hidden;
}
.table-scroll > table thead,
.table-responsive > table thead {
    background: rgba(17, 20, 42, 0.95);
}
.table-scroll > table th,
.table-scroll > table td,
.table-responsive > table th,
.table-responsive > table td {
    padding: 10px 14px;
    text-align: left;
    vertical-align: top;
    border-bottom: 1px solid var(--line);
}
.table-scroll > table thead th,
.table-responsive > table thead th {
    font-weight: 600;
    color: var(--text-2);
}
.table-scroll > table tbody td,
.table-responsive > table tbody td {
    color: var(--text-3);
}
.table-scroll > table tbody tr:last-child td,
.table-responsive > table tbody tr:last-child td {
    border-bottom: none;
}

@media (min-width: 768px) {
    .table-scroll,
    .table-responsive {
        overflow-x: visible;
    }
    .table-scroll > table,
    .table-responsive > table {
        table-layout: fixed;
        min-width: 0;
        max-width: 100%;
    }
    .table-scroll > table th,
    .table-scroll > table td,
    .table-responsive > table th,
    .table-responsive > table td {
        overflow-wrap: anywhere;
        word-break: break-word;
    }
    .table-scroll > table thead th:first-child,
    .table-scroll > table tbody td:first-child,
    .table-responsive > table thead th:first-child,
    .table-responsive > table tbody td:first-child {
        width: 32%;
        max-width: 40%;
    }
}

.page a { color: var(--primary-hover); }
.page a:hover { color: var(--text); }
.page .lead { font-size: 18px; color: var(--text-2); max-width: 820px; }

.placeholder {
    margin-top: 24px;
    padding: 24px;
    background: var(--bg-2);
    border: 1px dashed var(--line);
    border-radius: var(--radius-md);
    color: var(--text-3);
}
.placeholder strong { color: var(--text); }


.hero {
    padding: 56px 0 32px;
    background:
        radial-gradient(900px 420px at 80% -10%, rgba(124, 58, 237, .25), transparent 60%),
        radial-gradient(700px 360px at 0% 0%, rgba(99, 102, 241, .22), transparent 60%);
}
.hero h1 {
    font-size: clamp(34px, 5.5vw, 56px);
    line-height: 1.05;
    margin: 0 0 16px;
    letter-spacing: -0.02em;
}
.hero p { font-size: 18px; color: var(--text-2); max-width: 720px; margin: 0 0 24px; }
.hero .hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-lg { padding: 14px 22px; font-size: 16px; border-radius: var(--radius-md); }


.site-footer--aurora {
    flex-shrink: 0;
    position: relative;
    margin-top: 56px;
    padding: 0 0 44px;
    overflow: hidden;
    background:
        radial-gradient(80% 120% at 50% 100%, rgba(124, 58, 237, .18), transparent 55%),
        var(--bg-0);
    border-top: 1px solid var(--line);
}
.site-footer__aurora-sheen {
    height: 3px;
    background: linear-gradient(90deg, #22d3ee 0%, #6366f1 35%, #a855f7 70%, #22d3ee 100%);
    background-size: 200% 100%;
    opacity: .95;
}
.site-footer__aurora-inner {
    padding-top: 36px;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.site-footer__glass {
    border-radius: 22px;
    padding: clamp(22px, 4vw, 34px);
    border: 1px solid rgba(255, 255, 255, .1);
    background: linear-gradient(
        145deg,
        rgba(99, 102, 241, .09) 0%,
        rgba(15, 23, 42, .72) 45%,
        rgba(6, 8, 22, .92) 100%
    );
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, .04) inset,
        0 24px 56px rgba(0, 0, 0, .45),
        0 -2px 40px rgba(124, 58, 237, .08);
}

.site-footer__top-row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px 28px;
    margin-bottom: 22px;
    padding-bottom: 22px;
    border-bottom: 1px solid rgba(255, 255, 255, .06);
}

.site-footer__brand { min-width: 180px; }
.site-footer__logo-link img {
    height: 30px;
    width: auto;
}
.site-footer__brand-note {
    margin: 12px 0 0;
    font-size: 12px;
    color: var(--text-4);
    letter-spacing: .02em;
    max-width: 260px;
    line-height: 1.45;
}

.site-footer__social-rail {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.social-icons {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 8px;
}
.social-icons--rail {
    padding: 6px;
    border-radius: 999px;
    background: rgba(0, 0, 0, .25);
    border: 1px solid rgba(255, 255, 255, .07);
}

.social-icons__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    color: var(--text-3);
    background: rgba(255, 255, 255, .06);
    border: 1px solid transparent;
    transition: transform .18s ease, border-color .18s ease, background .18s ease, color .18s ease, box-shadow .18s ease;
}
.social-icons__btn:hover {
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(99, 102, 241, .35);
}
.social-icons__btn--tg:hover {
    border-color: rgba(38, 165, 228, .65);
    background: rgba(38, 165, 228, .18);
}
.social-icons__btn--vk:hover {
    border-color: rgba(0, 119, 255, .65);
    background: rgba(0, 119, 255, .18);
}
.social-icons__btn--yt:hover {
    border-color: rgba(239, 68, 68, .65);
    background: rgba(239, 68, 68, .14);
}

.site-footer__age-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 18px;
    border-radius: 999px;
    font-weight: 800;
    font-size: 13px;
    letter-spacing: .08em;
    color: #fff;
    border: 1px solid rgba(248, 250, 252, .25);
    background: linear-gradient(135deg, rgba(239, 68, 68, .35), rgba(124, 58, 237, .25));
    transition: transform .18s ease, box-shadow .18s ease;
}
.site-footer__age-pill:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(239, 68, 68, .22);
}

.site-footer__chip-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}
.site-footer__chip {
    font-size: 13px;
    font-weight: 600;
    padding: 10px 18px;
    border-radius: 999px;
    color: var(--text-2);
    border: 1px solid rgba(255, 255, 255, .1);
    background: rgba(255, 255, 255, .04);
    transition: border-color .15s ease, background .15s ease, color .15s ease;
}
.site-footer__chip:hover {
    color: #fff;
    border-color: rgba(167, 139, 250, .45);
    background: rgba(124, 58, 237, .15);
}

.site-footer__legal-text {
    margin: 0;
    font-size: 12px;
    line-height: 1.68;
    color: var(--text-4);
    max-width: 72ch;
}

.site-footer__base {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    text-align: center;
}
.site-footer__bga.badge-bga-logo {
    padding: 8px 14px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, .03);
    border: 1px solid rgba(255, 255, 255, .06);
}
.badge-bga-logo:hover { opacity: .92; }
.badge-bga-logo img {
    display: block;
    height: 28px;
    width: auto;
}
.site-footer__copyright {
    margin: 0;
    font-size: 13px;
    color: var(--text-4);
    letter-spacing: .03em;
}


.notfound {
    padding: 80px 0;
    text-align: center;
}
.notfound h1 { font-size: clamp(48px, 8vw, 96px); margin: 0; }
.notfound p { color: var(--text-3); margin: 8px 0 24px; }


@media (max-width: 900px) {
    .header-grid {
        display: flex;
        flex-wrap: nowrap;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        min-height: var(--header-h);
    }
    .logo {
        flex-shrink: 0;
    }
    .header-bar {
        display: flex;
        align-items: center;
        gap: 8px;
        flex-shrink: 0;
    }
    .header-cta .btn {
        min-height: 44px;
        padding: 0 16px;
        font-size: 14px;
        font-weight: 700;
    }
    .menu-toggle {
        display: inline-flex;
    }
    .primary-nav {
        position: fixed;
        top: var(--header-h);
        left: 0;
        width: min(300px, 88vw);
        height: calc(100dvh - var(--header-h));
        margin: 0;
        padding: 16px 0 24px;
        background: rgba(11, 14, 30, 0.98);
        border-right: 1px solid var(--line);
        box-shadow: 12px 0 40px rgba(0, 0, 0, 0.45);
        z-index: 200;
        overflow-y: auto;
        transform: translateX(-100%);
        visibility: hidden;
        transition: transform .28s ease, visibility 0s linear .28s;
    }
    body.nav-open .primary-nav {
        transform: translateX(0);
        visibility: visible;
        transition: transform .28s ease, visibility 0s linear 0s;
    }
    .primary-nav__list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 0 12px;
    }
    .primary-nav a {
        display: flex;
        align-items: center;
        min-height: 48px;
        padding: 0 14px;
        font-size: 15px;
        border-radius: var(--radius-sm);
        border-bottom: 0;
    }
    .nav-backdrop {
        display: block;
        position: fixed;
        inset: 0;
        top: var(--header-h);
        z-index: 190;
        margin: 0;
        padding: 0;
        border: 0;
        background: rgba(0, 0, 0, 0.55);
        cursor: pointer;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: opacity .22s ease, visibility 0s linear .22s;
    }
    .nav-backdrop[hidden] {
        display: none !important;
    }
    .nav-backdrop:not([hidden]) {
        display: block !important;
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transition: opacity .22s ease, visibility 0s linear 0s;
    }

    .site-footer__top-row {
        flex-direction: column;
        align-items: stretch;
    }
    .site-footer__social-rail {
        justify-content: flex-start;
    }
}

@media (max-width: 400px) {
    .header-cta .btn {
        padding: 8px 10px;
        font-size: 12px;
    }
}


.article-toc--duel {
    margin: 16px 0 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    background: linear-gradient(165deg, rgba(99, 102, 241, 0.08), rgba(124, 58, 237, 0.04));
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    overflow: hidden;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
}
.article-toc--duel .article-toc__summary {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 15px 18px;
    cursor: pointer;
    user-select: none;
    transition: background .18s ease;
}
.article-toc--duel .article-toc__summary::-webkit-details-marker {
    display: none;
}
.article-toc--duel .article-toc__summary::marker {
    content: "";
}
.article-toc--duel .article-toc__summary:hover {
    background: rgba(255, 255, 255, 0.03);
}
.article-toc--duel .article-toc__summary:focus {
    outline: none;
}
.article-toc--duel .article-toc__summary:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: -2px;
}
.article-toc--duel .article-toc__title {
    margin: 0;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--text-3);
}
.article-toc--duel .article-toc__summary::after {
    content: "";
    flex-shrink: 0;
    width: 10px;
    height: 10px;
    border-left: 2px solid var(--primary-hover);
    border-bottom: 2px solid var(--primary-2);
    transform: rotate(-45deg);
    opacity: 0.9;
    transition: transform .22s ease;
}
.article-toc--duel[open] .article-toc__summary::after {
    transform: rotate(135deg);
}
.article-toc--duel .article-toc__panel {
    padding: 8px 14px 18px 16px;
    border-top: 1px solid var(--line);
}
.article-toc--duel .article-toc__list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.article-toc--duel .article-toc__list li {
    position: relative;
    padding: 8px 8px 8px 18px;
    border-radius: var(--radius-sm);
}
.article-toc--duel .article-toc__list li::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-2));
    opacity: 0.85;
}
.article-toc--duel .article-toc__list a {
    color: var(--primary-hover);
    font-weight: 500;
    font-size: 15px;
}
.article-toc--duel .article-toc__list a:hover {
    color: var(--text);
}

.article-faq {
    margin-top: 32px;
    padding-top: 28px;
    border-top: 1px solid var(--line);
}
.article-faq .article-faq__heading {
    margin: 0 0 18px;
    font-size: 1.35rem;
}
.article-faq__accordion {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.article-faq__item {
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--bg-2);
    overflow: hidden;
}
.article-faq__summary {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 14px 18px;
    cursor: pointer;
    user-select: none;
    transition: background .15s ease;
}
.article-faq__summary::-webkit-details-marker {
    display: none;
}
.article-faq__summary::marker {
    content: "";
}
.article-faq__summary:hover {
    background: rgba(255, 255, 255, 0.04);
}
.article-faq__summary:focus {
    outline: none;
}
.article-faq__summary:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: -2px;
}
.article-faq__summary::after {
    content: "";
    flex-shrink: 0;
    width: 9px;
    height: 9px;
    margin-top: -4px;
    border-right: 2px solid var(--text-3);
    border-bottom: 2px solid var(--text-3);
    transform: rotate(45deg);
    transition: transform .2s ease, margin .2s ease;
    opacity: 0.9;
}
.article-faq__item[open] .article-faq__summary::after {
    margin-top: 2px;
    transform: rotate(225deg);
}
.article-faq__q {
    margin: 0;
    flex: 1;
    min-width: 0;
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.35;
    color: var(--text);
    text-align: left;
}
.article-faq__answer {
    padding: 0 18px 16px;
    border-top: 1px solid transparent;
}
.article-faq__item[open] .article-faq__answer {
    border-top-color: var(--line);
}
.article-faq__answer p {
    margin: 14px 0 0;
    color: var(--text-2);
    font-size: 15px;
    line-height: 1.6;
}