:root {
    --primary: rgb(213, 5, 5);
    --primary-dark: rgb(174, 0, 0);
    --black: #111111;
    --dark: #333333;
    --muted: #666666;
    --light: #f5f5f5;
    --line: #e8e8e8;
    --white: #ffffff;
    --radius: 18px;
    --shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    color: var(--dark);
    background: #fff;
    line-height: 1.75;
    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; }
.top-red-bar { display: none; background: var(--primary); color: #fff; font-size: 13px; }
.top-red-inner { display: flex; justify-content: space-between; align-items: center; height: 32px; }
.site-header { background: #fff; position: relative; z-index: 20; border-bottom: 1px solid var(--line); }
.mobile-header { height: 62px; display: grid; grid-template-columns: 74px 1fr 86px; align-items: center; background: #fff; padding: 0 14px; }
.menu-button { width: 42px; height: 42px; border: 0; background: transparent; padding: 8px; display: flex; flex-direction: column; justify-content: center; gap: 5px; cursor: pointer; }
.menu-button span { height: 2px; width: 24px; background: #222; border-radius: 999px; transition: .2s ease; }
.menu-button.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-button.open span:nth-child(2) { opacity: 0; }
.menu-button.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-logo { justify-self: center; }
.mobile-logo img { height: 34px; width: auto; }
.logo img { height: 45px; width: auto; }
.top-action { display: inline-flex; align-items: center; justify-content: center; min-height: 38px; padding: 0 18px; background: var(--primary); color: #fff; border-radius: 999px; font-weight: 700; font-size: 14px; box-shadow: 0 8px 18px rgba(213, 5, 5, .18); }
.top-action:hover, .main-btn:hover { background: var(--primary-dark); }
.mobile-nav { display: none; flex-direction: column; padding: 8px 16px 16px; background: #fff; border-top: 1px solid var(--line); box-shadow: var(--shadow); }
.mobile-nav.open { display: flex; }
.mobile-nav a { padding: 12px 10px; border-bottom: 1px solid #f0f0f0; font-weight: 600; color: #333; }
.mobile-nav a.active { color: var(--primary); }
.desktop-header { display: none; background: #fff; }
.desktop-inner { height: 76px; display: flex; align-items: center; gap: 18px; }
.desktop-nav { flex: 1; display: flex; align-items: center; justify-content: center; gap: 8px; white-space: nowrap; }
.desktop-nav a { padding: 9px 14px; border-radius: 999px; color: #333; font-weight: 600; font-size: 15px; }
.desktop-nav a:hover, .desktop-nav a.active { background: var(--primary); color: #fff; }
.search-icon { width: 34px; height: 34px; border: 1px solid var(--line); border-radius: 50%; position: relative; flex: 0 0 auto; }
.search-icon::before { content: ""; width: 10px; height: 10px; border: 2px solid #777; border-radius: 50%; position: absolute; left: 9px; top: 8px; }
.search-icon::after { content: ""; width: 9px; height: 2px; background: #777; position: absolute; left: 19px; top: 21px; transform: rotate(45deg); border-radius: 999px; }
.section { padding: 56px 0; }
.section-light { background: var(--light); }
.section-title { margin: 0 0 14px; color: var(--black); font-size: 28px; line-height: 1.35; }
.section-kicker { color: var(--primary); font-weight: 800; letter-spacing: .08em; font-size: 13px; margin-bottom: 8px; }
.section-lead { max-width: 780px; margin: 0 0 28px; color: var(--muted); }
.main-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 24px; background: var(--primary); color: #fff; border-radius: 999px; font-weight: 800; border: 0; box-shadow: 0 10px 24px rgba(213, 5, 5, .2); }
.secondary-link { color: var(--primary); font-weight: 800; display: inline-flex; align-items: center; gap: 5px; margin-top: 12px; }
.secondary-link::after { content: "›"; font-size: 20px; }
.sports-hero { background: linear-gradient(180deg, #fff 0%, #fafafa 100%); }
.banner-slider { position: relative; overflow: hidden; background: #f2f2f2; }
.banner-slider.home-slider { border-bottom: 1px solid var(--line); }
.slide { display: none; position: relative; }
.slide.active { display: block; }
.slide img { width: 100%; height: auto; object-fit: contain; background: #f5f5f5; }
.slide-caption { padding: 20px 16px 26px; background: #fff; }
.slide-caption h1, .slide-caption h2 { margin: 0 0 10px; color: var(--black); font-size: 26px; line-height: 1.25; }
.slide-caption p { margin: 0 0 16px; color: var(--muted); }
.slider-dots { display: flex; justify-content: center; gap: 8px; position: absolute; left: 0; right: 0; bottom: 10px; z-index: 4; }
.slider-dot { width: 10px; height: 10px; border-radius: 50%; border: 0; background: rgba(0, 0, 0, .18); cursor: pointer; }
.slider-dot.active { width: 24px; border-radius: 999px; background: var(--primary); }
.slider-arrow { display: none; width: 42px; height: 42px; border: 0; border-radius: 50%; background: rgba(255, 255, 255, .86); color: var(--primary); font-size: 30px; line-height: 1; position: absolute; top: 50%; transform: translateY(-50%); z-index: 4; cursor: pointer; }
.slider-arrow.prev { left: 24px; }
.slider-arrow.next { right: 24px; }
.brand-note { padding: 18px 0; border-bottom: 1px solid var(--line); background: #fff; }
.brand-note-inner { display: flex; flex-direction: column; gap: 12px; color: var(--muted); }
.brand-note strong { color: var(--black); }
.category-grid, .service-grid, .security-grid, .quick-grid, .page-grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
.category-card, .sports-card, .focus-card, .service-card, .score-card, .data-card, .faq-item, .security-card, .notice-card, .content-card, .step-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: 0 8px 22px rgba(0, 0, 0, .04); }
.category-card { position: relative; overflow: hidden; }
.category-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--primary); }
.card-tag, .status-tag { display: inline-flex; align-items: center; min-height: 24px; padding: 0 10px; border-radius: 999px; background: rgba(213, 5, 5, .08); color: var(--primary); font-weight: 800; font-size: 12px; margin-bottom: 12px; }
.category-card h3, .focus-card h3, .service-card h3, .security-card h3, .content-card h3, .step-card h3 { margin: 0 0 10px; color: var(--black); font-size: 20px; }
.category-card p, .focus-card p, .service-card p, .security-card p, .content-card p, .step-card p { margin: 0; color: var(--muted); }
.focus-grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
.focus-card { border-top: 4px solid var(--primary); }
.service-card { min-height: 220px; }
.media-section { display: grid; grid-template-columns: 1fr; gap: 28px; align-items: center; }
.media-img { border-radius: 24px; overflow: hidden; box-shadow: var(--shadow); background: #f2f2f2; }
.check-list, .text-list { padding: 0; margin: 20px 0 0; list-style: none; display: grid; gap: 12px; }
.check-list li, .text-list li { position: relative; padding-left: 24px; color: var(--dark); }
.check-list li::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--primary); position: absolute; left: 0; top: .72em; }
.score-panel { display: grid; grid-template-columns: 1fr; gap: 18px; }
.score-card strong { color: var(--black); display: block; margin-bottom: 8px; font-size: 18px; }
.data-panel { display: grid; grid-template-columns: 1fr; gap: 14px; margin-top: 20px; }
.data-card { padding: 18px; }
.data-card span { display: block; color: var(--primary); font-weight: 900; font-size: 24px; margin-bottom: 5px; }
.app-showcase { background: linear-gradient(180deg, #fff 0%, #f8f8f8 100%); }
.platform-info-section { background: #fff; }
.two-column { display: grid; grid-template-columns: 1fr; gap: 24px; }
.info-list { display: grid; gap: 16px; }
.info-item { border-left: 4px solid var(--primary); padding: 14px 16px; background: #fafafa; border-radius: 14px; }
.info-item h3 { margin: 0 0 6px; color: var(--black); font-size: 18px; }
.info-item p { margin: 0; color: var(--muted); }
.security-section { background: var(--light); }
.responsible-play-section { background: #fff; }
.notice-card { border-color: rgba(213, 5, 5, .18); background: linear-gradient(180deg, #fff 0%, #fff7f7 100%); }
.faq-list { display: grid; gap: 14px; }
.faq-item h3 { margin: 0 0 8px; color: var(--black); font-size: 18px; }
.faq-item p { margin: 0; color: var(--muted); }
.cta-section { background: var(--primary); color: #fff; padding: 48px 0; text-align: center; }
.cta-section h2 { margin: 0 0 12px; color: #fff; font-size: 28px; }
.cta-section p { margin: 0 auto 22px; max-width: 760px; color: rgba(255,255,255,.86); }
.cta-section .main-btn { background: #fff; color: var(--primary); box-shadow: none; }
.page-hero { background: linear-gradient(180deg, #fff 0%, #f7f7f7 100%); padding: 46px 0 38px; border-bottom: 1px solid var(--line); }
.page-hero h1 { margin: 0 0 14px; color: var(--black); font-size: 32px; line-height: 1.25; }
.page-hero p { margin: 0; max-width: 860px; color: var(--muted); font-size: 17px; }
.breadcrumb { color: var(--primary); font-weight: 800; margin-bottom: 8px; }
.content-body { padding: 48px 0; }
.content-body p { color: var(--muted); margin: 0 0 16px; }
.content-body h2 { color: var(--black); margin: 36px 0 14px; font-size: 25px; }
.content-card ul { margin: 10px 0 0; padding-left: 18px; color: var(--muted); }
.steps { counter-reset: step; display: grid; grid-template-columns: 1fr; gap: 16px; margin: 28px 0; }
.step-card { position: relative; padding-left: 64px; }
.step-card::before { counter-increment: step; content: counter(step); position: absolute; left: 20px; top: 22px; width: 30px; height: 30px; background: var(--primary); color: #fff; border-radius: 50%; display: grid; place-items: center; font-weight: 900; }
.site-footer { background: #222; color: #d8d8d8; padding-top: 44px; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 28px; }
.footer-logo { height: 42px; width: auto; margin-bottom: 14px; }
.site-footer h3 { color: #fff; margin: 0 0 12px; }
.site-footer a { display: block; color: #d8d8d8; margin: 8px 0; }
.site-footer a:hover { color: #fff; }
.site-footer p { margin: 0; color: #c8c8c8; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); margin-top: 34px; padding: 18px 0; font-size: 13px; color: #bbb; }
@media (min-width: 640px) {
    .category-grid, .service-grid, .security-grid, .quick-grid, .page-grid { grid-template-columns: repeat(2, 1fr); }
    .focus-grid { grid-template-columns: repeat(2, 1fr); }
    .data-panel { grid-template-columns: repeat(3, 1fr); }
    .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
    .top-red-bar { display: block; }
    .mobile-header, .mobile-nav { display: none !important; }
    .desktop-header { display: block; }
    .section { padding: 76px 0; }
    .section-title { font-size: 36px; }
    .slide img { height: 470px; object-fit: cover; }
    .slide-caption { position: absolute; left: max(50px, calc((100vw - 1160px) / 2)); top: 50%; transform: translateY(-50%); width: min(520px, 44vw); background: rgba(255,255,255,.92); border-radius: 24px; padding: 30px; box-shadow: var(--shadow); }
    .slide-caption h1, .slide-caption h2 { font-size: 40px; }
    .slider-arrow { display: block; }
    .slider-dots { bottom: 24px; }
    .brand-note-inner { flex-direction: row; align-items: center; justify-content: space-between; }
    .category-grid { grid-template-columns: repeat(3, 1fr); }
    .service-grid { grid-template-columns: repeat(3, 1fr); }
    .focus-grid { grid-template-columns: repeat(4, 1fr); }
    .media-section { grid-template-columns: 1.02fr .98fr; gap: 54px; }
    .media-section.reverse { grid-template-columns: .98fr 1.02fr; }
    .media-section.reverse .media-img { order: -1; }
    .score-panel { grid-template-columns: .9fr 1.1fr; align-items: center; gap: 44px; }
    .two-column { grid-template-columns: 1fr 1fr; gap: 34px; }
    .security-grid { grid-template-columns: repeat(3, 1fr); }
    .page-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1.4fr .8fr .8fr 1fr; }
    .page-hero { padding: 66px 0 56px; }
    .page-hero h1 { font-size: 42px; }
}
@media (min-width: 1100px) {
    .desktop-nav { gap: 10px; }
    .desktop-nav a { padding: 10px 16px; }
}