:root {
    color-scheme: dark;
    --bg: #0f1310;
    --panel: #182019;
    --line: rgba(255,255,255,.1);
    --text: #f4f2e9;
    --muted: #a9afa8;
    --gold: #ead8a8;
    font-family: Inter, ui-sans-serif, system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    min-height: 100%;
}

body {
    min-height: 100dvh;
    color: var(--text);
    background:
        radial-gradient(circle at 14% 9%, rgba(49,96,59,.23), transparent 32rem),
        var(--bg);
}

button { font: inherit; }

.rules-shell {
    width: min(1040px, calc(100% - 22px));
    margin: 0 auto;
    padding-bottom: 28px;
}

.rules-header {
    min-height: 82px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    border-bottom: 1px solid var(--line);
}

.rules-header > div {
    text-align: center;
}

.rules-header h1 {
    margin: 4px 0 0;
}

.rules-header a {
    justify-self: start;
    color: var(--gold);
    text-decoration: none;
    font-weight: 800;
}

.rules-header button {
    justify-self: end;
    padding: 9px 12px;
    border: 1px solid var(--line);
    border-radius: 9px;
    background: rgba(255,255,255,.035);
    color: var(--text);
    cursor: pointer;
}

.eyebrow {
    color: var(--gold);
    font-size: .62rem;
    font-weight: 900;
    letter-spacing: .16em;
}

.rules-hero,
.rules-card,
.formula-card {
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--panel);
}

.rules-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 25px;
    margin-top: 18px;
    padding: clamp(19px, 4vw, 32px);
}

.rules-hero h2,
.rules-card h2,
.formula-card h2 {
    margin: 5px 0 0;
}

.rules-hero p,
.formula-card p {
    margin: 9px 0 0;
    color: var(--muted);
    line-height: 1.5;
}

.hero-numbers {
    display: grid;
    grid-template-columns: repeat(3, minmax(76px, 1fr));
    gap: 8px;
}

.hero-numbers article {
    padding: 13px 10px;
    border-radius: 12px;
    background: rgba(255,255,255,.035);
    text-align: center;
}

.hero-numbers strong,
.hero-numbers span {
    display: block;
}

.hero-numbers strong {
    color: var(--gold);
    font-size: 1.45rem;
}

.hero-numbers span {
    margin-top: 4px;
    color: var(--muted);
    font-size: .62rem;
}

.rules-grid {
    display: grid;
    grid-template-columns: 1.2fr .8fr;
    gap: 14px;
    margin-top: 14px;
}

.rules-card,
.formula-card {
    padding: clamp(18px, 3vw, 26px);
}

.card-score-list {
    display: grid;
    gap: 8px;
    margin-top: 16px;
}

.card-score-row {
    display: grid;
    grid-template-columns: minmax(0,1fr) auto;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border: 1px solid rgba(255,255,255,.07);
    border-radius: 11px;
    background: rgba(255,255,255,.025);
}

.card-score-row strong,
.card-score-row span {
    display: block;
}

.card-score-row span {
    margin-top: 3px;
    color: var(--muted);
    font-size: .66rem;
}

.card-score-points {
    min-width: 64px;
    color: var(--gold);
    font-size: 1.05rem;
    font-weight: 900;
    text-align: right;
}

.bonus-list {
    margin: 16px 0 0;
}

.bonus-list div {
    display: flex;
    justify-content: space-between;
    gap: 15px;
    padding: 11px 0;
    border-bottom: 1px solid rgba(255,255,255,.07);
}

.bonus-list dt,
.bonus-list dd {
    margin: 0;
}

.bonus-list dt {
    color: var(--muted);
}

.bonus-list dd {
    color: var(--gold);
    font-weight: 900;
}

.rules-note {
    margin: 15px 0 0;
    color: var(--muted);
    font-size: .72rem;
    line-height: 1.5;
}

.formula-card {
    margin-top: 14px;
}

.formula {
    margin-top: 15px;
    padding: 15px;
    border: 1px solid rgba(200,170,109,.24);
    border-radius: 12px;
    background: rgba(200,170,109,.055);
    color: var(--gold);
    font-weight: 850;
    text-align: center;
}

.rules-loading {
    padding: 20px;
    color: var(--muted);
    text-align: center;
}

.rules-message {
    position: fixed;
    right: 18px;
    bottom: 18px;
    padding: 11px 13px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #1c251e;
    opacity: 0;
    pointer-events: none;
}

.rules-message.visible {
    opacity: 1;
}

@media (max-width: 760px) {
    .rules-grid,
    .rules-hero {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 500px) {
    .rules-header {
        grid-template-columns: auto 1fr auto;
    }

    .rules-header .eyebrow {
        display: none;
    }

    .hero-numbers {
        grid-template-columns: repeat(3, 1fr);
    }
}


/* =========================================================
   R164 - SEO editorial guide
   ========================================================= */

.rules-guide-shell {
    max-width: 1180px;
}

.rules-guide-intro,
.rules-toc,
.rules-guide-section,
.rules-guide-cta {
    margin-top: 24px;
    padding: clamp(22px, 3vw, 38px);
    border: 1px solid rgba(255,255,255,.10);
    border-radius: 24px;
    background: rgba(7, 23, 19, .72);
    box-shadow: 0 18px 50px rgba(0,0,0,.16);
}

.rules-guide-intro p,
.rules-guide-section p,
.rules-guide-cta p {
    max-width: 900px;
    line-height: 1.75;
}

.rules-guide-lead {
    font-size: clamp(1.06rem, 1.7vw, 1.22rem);
}

.rules-guide-note {
    opacity: .78;
    font-size: .94rem;
}

.rules-guide-section h2,
.rules-guide-cta h2 {
    margin-top: 7px;
    margin-bottom: 16px;
    font-size: clamp(1.55rem, 3vw, 2.35rem);
    line-height: 1.12;
}

.rules-guide-section h3 {
    margin-top: 28px;
    margin-bottom: 8px;
    font-size: clamp(1.12rem, 2vw, 1.38rem);
}

.rules-toc strong {
    display: block;
    margin-bottom: 14px;
    font-size: 1.08rem;
}

.rules-toc > div {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.rules-toc a {
    display: inline-flex;
    padding: 9px 13px;
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 999px;
    color: inherit;
    text-decoration: none;
    background: rgba(255,255,255,.045);
}

.rules-toc a:hover {
    background: rgba(255,255,255,.09);
}

.rules-facts-grid,
.rules-score-summary,
.rules-comparison-grid {
    display: grid;
    gap: 14px;
    margin-top: 22px;
}

.rules-facts-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.rules-score-summary {
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

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

.rules-facts-grid article,
.rules-score-summary article,
.rules-comparison-grid article {
    padding: 18px;
    border: 1px solid rgba(255,255,255,.10);
    border-radius: 18px;
    background: rgba(255,255,255,.035);
}

.rules-facts-grid strong,
.rules-score-summary strong {
    display: block;
    font-size: 1.55rem;
}

.rules-facts-grid span,
.rules-score-summary span {
    display: block;
    margin-top: 4px;
    opacity: .78;
}

.rules-checklist {
    display: grid;
    gap: 10px;
    margin: 20px 0;
}

.rules-checklist p {
    margin: 0;
    padding: 13px 16px;
    border-left: 3px solid currentColor;
    border-radius: 10px;
    background: rgba(255,255,255,.04);
}

.rules-faq details {
    margin-top: 10px;
    border: 1px solid rgba(255,255,255,.10);
    border-radius: 14px;
    background: rgba(255,255,255,.035);
}

.rules-faq summary {
    cursor: pointer;
    padding: 15px 17px;
    font-weight: 700;
}

.rules-faq details p {
    margin: 0;
    padding: 0 17px 17px;
}

.rules-guide-cta {
    text-align: center;
}

.rules-guide-cta p {
    margin-left: auto;
    margin-right: auto;
}

.rules-guide-cta a {
    display: inline-flex;
    margin-top: 12px;
    padding: 12px 20px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 800;
    color: inherit;
    border: 1px solid rgba(255,255,255,.16);
    background: rgba(255,255,255,.08);
}

.rules-format-card {
    margin-top: 24px;
}

@media (max-width: 900px) {
    .rules-facts-grid,
    .rules-score-summary {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .rules-comparison-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {
    .rules-guide-intro,
    .rules-toc,
    .rules-guide-section,
    .rules-guide-cta {
        padding: 19px 16px;
        border-radius: 18px;
    }

    .rules-facts-grid,
    .rules-score-summary {
        grid-template-columns: 1fr;
    }
}