:root {
    --brand: rgb(213, 5, 5);
    --brand-dark: rgb(176, 0, 0);
    --text: #161616;
    --muted: #666;
    --light: #f6f6f6;
    --line: #e9e9e9;
    --white: #fff;
    --dark: #262626;
    --shadow: 0 12px 35px rgba(0, 0, 0, .06);
    --radius: 18px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    color: var(--text);
    background: #fff;
    line-height: 1.7;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1160px, calc(100% - 32px)); margin: 0 auto; }
.site-header { background: var(--white); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 50; }
.menu-toggle { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.mobile-header { height: 60px; display: grid; grid-template-columns: 56px 1fr 86px; align-items: center; padding: 0 12px; background: #fff; }
.mobile-logo { justify-self: center; }
.mobile-logo img { height: 34px; width: auto; }
.menu-button { width: 42px; height: 42px; display: flex; flex-direction: column; justify-content: center; gap: 5px; cursor: pointer; }
.menu-button span { width: 24px; height: 2px; background: #111; border-radius: 2px; display: block; }
.top-action { display: inline-flex; align-items: center; justify-content: center; min-height: 38px; padding: 0 18px; border-radius: 999px; background: var(--brand); color: #fff; font-weight: 700; box-shadow: 0 8px 18px rgba(213, 5, 5, .16); }
.top-action:hover, .main-btn:hover { background: var(--brand-dark); }
.mobile-nav { display: none; border-top: 1px solid var(--line); background: #fff; padding: 8px 16px 16px; }
.mobile-nav a { display: block; padding: 12px 4px; color: #333; border-bottom: 1px solid #f0f0f0; }
.menu-toggle:checked ~ .mobile-nav { display: block; }
.desktop-header { display: none; }
.logo img { height: 46px; width: auto; }
.desktop-nav { display: flex; align-items: center; gap: 22px; font-weight: 650; color: #333; white-space: nowrap; }
.desktop-nav a { padding: 27px 0; border-bottom: 3px solid transparent; }
.desktop-nav a.active, .desktop-nav a:hover { color: var(--brand); border-color: var(--brand); }
.search-icon { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 50%; position: relative; flex: 0 0 auto; }
.search-icon:before { content: ""; position: absolute; width: 12px; height: 12px; border: 2px solid #444; border-radius: 50%; left: 10px; top: 9px; }
.search-icon:after { content: ""; position: absolute; width: 8px; height: 2px; background: #444; transform: rotate(45deg); right: 10px; bottom: 10px; border-radius: 2px; }
main { min-height: 70vh; }
.official-hero, .sports-hero, .page-hero { background: linear-gradient(180deg, #fff 0%, #fafafa 100%); }
.official-hero { padding: 34px 0 42px; }
.hero-grid { display: grid; gap: 28px; align-items: center; }
.kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--brand); font-weight: 800; letter-spacing: .02em; }
.kicker:before { content: ""; width: 8px; height: 8px; background: var(--brand); border-radius: 50%; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 14px; color: #111; }
h1 { font-size: clamp(30px, 6vw, 54px); letter-spacing: -.04em; }
h2 { font-size: clamp(24px, 4vw, 38px); letter-spacing: -.02em; }
h3 { font-size: 20px; }
p { margin: 0 0 16px; color: #4b4b4b; }
.hero-copy p { font-size: 16px; color: #3c3c3c; }
.hero-tags, .tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0 24px; }
.hero-tags span, .tag-list span, .red-tag { background: rgba(213, 5, 5, .08); color: var(--brand); border: 1px solid rgba(213, 5, 5, .12); padding: 7px 12px; border-radius: 999px; font-weight: 700; font-size: 14px; }
.main-btn { display: inline-flex; align-items: center; justify-content: center; background: var(--brand); color: #fff; min-height: 46px; padding: 0 26px; border-radius: 999px; font-weight: 800; box-shadow: 0 12px 22px rgba(213, 5, 5, .18); }
.sub-link { color: var(--brand); font-weight: 800; }
.hero-media, .image-card { border-radius: 24px; overflow: hidden; box-shadow: var(--shadow); background: #fff; border: 1px solid var(--line); }
.hero-media img, .image-card img { width: 100%; height: auto; }
.section { padding: 48px 0; }
.section.alt { background: var(--light); }
.section-head { max-width: 760px; margin: 0 auto 26px; text-align: center; }
.section-head p { color: #555; }
.category-grid { display: grid; gap: 16px; }
.sports-card, .service-card, .faq-item, .security-card, .data-card, .info-card, .plain-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: 0 8px 22px rgba(0,0,0,.035); }
.sports-card:hover, .service-card:hover, .plain-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.sports-card, .service-card, .plain-card { transition: .2s ease; }
.sports-card p, .service-card p, .plain-card p { font-size: 15px; }
.service-card .red-tag { margin-bottom: 14px; display: inline-flex; }
.split { display: grid; gap: 26px; align-items: center; }
.bullet-list { display: grid; gap: 14px; margin-top: 18px; }
.bullet-list div { padding: 16px; border: 1px solid var(--line); border-left: 4px solid var(--brand); border-radius: 14px; background: #fff; }
.bullet-list strong { display: block; margin-bottom: 4px; color: #111; }
.score-panel, .data-panel { background: #fff; border: 1px solid var(--line); border-radius: 24px; padding: 18px; box-shadow: var(--shadow); }
.score-list { display: grid; gap: 14px; margin-top: 18px; }
.score-row { display: grid; gap: 8px; padding: 16px; background: #fafafa; border: 1px solid var(--line); border-radius: 16px; }
.score-row strong { color: #111; }
.status { display: inline-flex; width: fit-content; padding: 4px 10px; border-radius: 999px; background: rgba(213,5,5,.08); color: var(--brand); font-weight: 800; font-size: 13px; }
.data-grid, .service-grid, .security-grid, .faq-grid, .mini-grid { display: grid; gap: 16px; }
.data-card strong { display: block; color: var(--brand); font-size: 18px; margin-bottom: 6px; }
.app-showcase { background: #fff; }
.platform-info-section .info-columns { display: grid; gap: 16px; }
.info-card h3 { color: var(--brand); }
.security-section { background: #fff; }
.responsible-play-section { background: linear-gradient(180deg, #fff5f5, #fff); }
.notice-box { border: 1px solid rgba(213,5,5,.18); background: rgba(213,5,5,.06); border-radius: 22px; padding: 24px; }
.faq-item h3 { font-size: 18px; }
.cta-section { padding: 50px 0; background: var(--brand); color: #fff; text-align: center; }
.cta-section h2, .cta-section p { color: #fff; }
.cta-section .main-btn { background: #fff; color: var(--brand); box-shadow: none; }
.cta-section .main-btn:hover { background: #f4f4f4; }
.page-hero { padding: 42px 0; border-bottom: 1px solid var(--line); }
.page-hero .container { max-width: 880px; }
.content-wrap { display: grid; gap: 24px; }
.content-block { background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 24px; box-shadow: 0 8px 22px rgba(0,0,0,.03); }
.content-block h2 { font-size: 26px; }
.check-list { display: grid; gap: 12px; padding: 0; margin: 16px 0 0; list-style: none; }
.check-list li { padding: 14px 14px 14px 42px; border: 1px solid var(--line); border-radius: 14px; background: #fafafa; position: relative; color: #444; }
.check-list li:before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--brand); position: absolute; left: 18px; top: 23px; }
.related-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.related-links a { padding: 9px 14px; border-radius: 999px; border: 1px solid rgba(213,5,5,.18); color: var(--brand); background: rgba(213,5,5,.05); font-weight: 750; }
.steps { counter-reset: step; display: grid; gap: 14px; margin: 20px 0; }
.step { counter-increment: step; border: 1px solid var(--line); border-radius: 18px; padding: 18px 18px 18px 60px; background: #fff; position: relative; }
.step:before { content: counter(step); position: absolute; left: 18px; top: 19px; width: 28px; height: 28px; border-radius: 50%; background: var(--brand); color: #fff; display: grid; place-items: center; font-weight: 800; }
.site-footer { background: #202020; color: #fff; }
.footer-grid { display: grid; gap: 24px; padding: 42px 0; }
.footer-brand img { height: 42px; width: auto; margin-bottom: 14px; }
.footer-brand p, .footer-note p { color: #d8d8d8; }
.footer-links { display: grid; gap: 8px; }
.footer-links h3, .footer-note h3 { color: #fff; font-size: 18px; margin-bottom: 8px; }
.footer-links a { color: #d8d8d8; }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); text-align: center; padding: 16px; color: #cfcfcf; font-size: 14px; }
@media (min-width: 640px) {
    .category-grid, .service-grid, .data-grid, .security-grid, .faq-grid, .mini-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 920px) {
    .mobile-header, .mobile-nav { display: none !important; }
    .desktop-header { display: flex; align-items: center; justify-content: space-between; gap: 22px; height: 82px; }
    .official-hero { padding: 64px 0; }
    .hero-grid { grid-template-columns: 1.02fr .98fr; gap: 44px; }
    .split { grid-template-columns: 1fr 1fr; gap: 44px; }
    .category-grid { grid-template-columns: repeat(3, 1fr); }
    .service-grid { grid-template-columns: repeat(3, 1fr); }
    .data-grid, .security-grid, .faq-grid, .mini-grid { grid-template-columns: repeat(3, 1fr); }
    .platform-info-section .info-columns { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1.2fr; }
}
@media (max-width: 1100px) and (min-width: 920px) {
    .desktop-nav { gap: 12px; font-size: 14px; }
    .top-action { padding: 0 14px; }
}