:root {
    color-scheme: dark;
    --seo-bg: #0d0e12;
    --seo-surface: rgba(255, 255, 255, 0.04);
    --seo-border: rgba(255, 255, 255, 0.12);
    --seo-text: #f8fafc;
    --seo-muted: #94a3b8;
    --seo-accent: #2563eb;
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100dvh;
    margin: 0;
    color: var(--seo-text);
    background-color: var(--seo-bg);
    background-image:
        radial-gradient(circle at 15% 20%, rgba(0, 133, 255, 0.1), transparent 30%),
        linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 100% 100%, 40px 40px, 40px 40px;
    font-family: Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.6;
    word-break: keep-all;
}

a {
    color: inherit;
}

.seo-header {
    display: flex;
    max-width: 1120px;
    margin: 24px auto 0;
    padding: 20px 24px;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    border: 1px solid var(--seo-border);
    border-radius: 18px;
    background: var(--seo-surface);
}

.seo-header > a {
    font-size: 18px;
    font-weight: 800;
    text-decoration: none;
    white-space: nowrap;
}

.seo-header nav,
.seo-game-nav nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
}

.seo-header nav a,
.seo-game-nav nav a {
    color: var(--seo-muted);
    font-size: 14px;
    text-underline-offset: 4px;
}

.seo-main {
    width: min(100% - 32px, 960px);
    margin: 72px auto;
}

.seo-eyebrow {
    margin: 0 0 8px;
    color: #60a5fa;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.08em;
}

h1 {
    margin: 0;
    font-size: clamp(32px, 6vw, 56px);
    line-height: 1.2;
    letter-spacing: -0.04em;
    text-wrap: balance;
}

.seo-intro {
    max-width: 720px;
    margin: 20px 0 28px;
    color: var(--seo-muted);
    font-size: 18px;
}

.seo-primary-link {
    display: inline-flex;
    padding: 11px 18px;
    border-radius: 10px;
    background: var(--seo-accent);
    color: white;
    font-weight: 750;
    text-decoration: none;
}

.seo-primary-link:focus-visible,
.seo-header a:focus-visible,
.seo-game-nav a:focus-visible {
    outline: 3px solid #93c5fd;
    outline-offset: 3px;
}

.seo-event-list {
    display: grid;
    margin: 48px 0 0;
    padding: 0;
    gap: 14px;
    list-style: none;
}

.seo-event-list article,
.seo-empty,
.seo-game-nav {
    padding: 24px;
    border: 1px solid var(--seo-border);
    border-radius: 16px;
    background: var(--seo-surface);
}

.seo-event-meta,
.seo-event-list time {
    color: #60a5fa;
    font-size: 13px;
    font-weight: 750;
}

.seo-event-list h2 {
    margin: 6px 0 8px;
    font-size: 21px;
    line-height: 1.4;
    text-wrap: balance;
}

.seo-event-list article > p:not(.seo-event-meta) {
    margin: 0 0 12px;
    color: var(--seo-muted);
    text-wrap: pretty;
}

.seo-game-nav {
    margin-top: 48px;
}

.seo-game-nav h2 {
    margin: 0 0 16px;
    font-size: 20px;
}

footer {
    width: min(100% - 32px, 960px);
    margin: 0 auto 32px;
    color: var(--seo-muted);
    font-size: 13px;
    text-align: center;
}

@media (max-width: 720px) {
    .seo-header {
        margin: 12px;
        padding: 18px;
        align-items: flex-start;
        flex-direction: column;
    }

    .seo-main {
        margin: 48px auto;
    }

    .seo-intro {
        font-size: 16px;
    }

    h1 {
        font-size: 29px;
    }

    .seo-event-list article,
    .seo-empty,
    .seo-game-nav {
        padding: 18px;
    }
}