/* 开云体育：全站蓝白响应式样式 */
:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-soft: #E8F7FF;
    --primary: #10AEEA;
    --primary-deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --line: #D7ECF8;
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --shadow: 0 18px 50px rgba(21, 90, 157, .11);
    --shadow-soft: 0 10px 30px rgba(21, 90, 157, .08);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --container: 1240px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    color: var(--text);
    background: var(--bg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}
body.drawer-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.skip-link {
    position: fixed; left: 16px; top: -60px; z-index: 1000;
    padding: 10px 14px; border-radius: 10px; background: var(--footer); color: white;
}
.skip-link:focus { top: 16px; }
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,.96);
    border-bottom: 1px solid rgba(215,236,248,.9);
    backdrop-filter: blur(14px);
}
.header-inner { min-height: 74px; display: flex; align-items: center; gap: 24px; }
.brand-logo { flex: 0 0 auto; width: 146px; }
.brand-logo img { width: 100%; height: 42px; object-fit: contain; object-position: left center; }
.desktop-nav { display: flex; align-items: center; justify-content: center; gap: 4px; min-width: 0; flex: 1; }
.nav-link {
    white-space: nowrap; padding: 9px 10px; border-radius: 999px;
    color: var(--text); font-size: 14px; font-weight: 650;
    transition: .2s ease;
}
.nav-link:hover, .nav-link.is-active { color: var(--primary-deep); background: var(--surface-soft); }
.header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.main-btn, .secondary-btn, .text-link {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    min-height: 44px; padding: 10px 22px; border-radius: 999px; font-weight: 750;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.main-btn { color: #fff; background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%); box-shadow: 0 10px 24px rgba(22,136,216,.24); }
.main-btn:hover { transform: translateY(-1px); box-shadow: 0 14px 28px rgba(22,136,216,.28); }
.secondary-btn { color: var(--primary-deep); background: var(--surface-soft); border: 1px solid var(--line); }
.text-link { padding-inline: 0; color: var(--primary-deep); min-height: auto; }
.text-link::after { content: "→"; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 0; border-radius: 14px; background: var(--surface-soft); padding: 10px; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 99px; background: var(--primary-deep); }
.drawer-backdrop { position: fixed; inset: 0; z-index: 190; background: rgba(7,58,104,.38); opacity: 0; transition: opacity .22s ease; }
.drawer-backdrop.is-visible { opacity: 1; }
.mobile-drawer {
    position: fixed; top: 0; right: 0; bottom: 0; z-index: 200;
    width: min(88vw, 380px); padding: 22px; background: #fff;
    transform: translateX(105%); transition: transform .26s ease;
    overflow-y: auto; box-shadow: -20px 0 50px rgba(7,58,104,.18);
}
.mobile-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--line); color: var(--primary-deep); font-size: 20px; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: var(--surface-soft); color: var(--primary-deep); font-size: 28px; line-height: 1; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 18px 0; }
.drawer-link { padding: 12px 13px; border-radius: 12px; background: #F8FCFF; color: var(--text); font-weight: 650; }
.drawer-link:hover, .drawer-link.is-active { background: var(--surface-soft); color: var(--primary-deep); }
.drawer-register { width: 100%; }
main { min-height: 60vh; }
.section { padding: 76px 0; }
.section.compact { padding: 54px 0; }
.section-soft { background: var(--surface-soft); }
.section-white { background: var(--surface); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
.section-head > div { max-width: 760px; }
.eyebrow { margin: 0 0 8px; color: var(--primary); font-size: 14px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
h1, h2, h3 { margin-top: 0; color: var(--primary-deep); line-height: 1.28; }
h1 { margin-bottom: 18px; font-size: clamp(36px, 5vw, 64px); letter-spacing: -.03em; }
h2 { margin-bottom: 14px; font-size: clamp(28px, 3.5vw, 42px); }
h3 { margin-bottom: 10px; font-size: 21px; }
p { margin-top: 0; }
.lead { color: var(--muted); font-size: clamp(17px, 2vw, 20px); }
.muted { color: var(--muted); }
.hero {
    position: relative; overflow: hidden; padding: 90px 0 72px;
    background: radial-gradient(circle at 88% 12%, rgba(53,215,255,.22), transparent 32%), linear-gradient(180deg, #F8FDFF 0%, #EAF8FF 100%);
}
.hero::before { content: ""; position: absolute; width: 430px; height: 430px; left: -240px; bottom: -300px; border-radius: 50%; background: rgba(16,174,234,.10); }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.06fr .94fr; align-items: center; gap: 52px; }
.hero-copy { max-width: 720px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-media { border-radius: var(--radius-xl); background: #fff; padding: 18px; box-shadow: var(--shadow); }
.hero-media img { width: 100%; max-height: 430px; object-fit: contain; border-radius: 20px; }
.hero-note { display: inline-flex; align-items: center; gap: 9px; margin-top: 18px; color: var(--muted); font-size: 14px; }
.hero-note::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 6px rgba(16,174,234,.12); }
.slider-wrap { padding: 24px 0 0; }
.hero-slider { position: relative; overflow: hidden; width: min(calc(100% - 40px), var(--container)); margin: 0 auto; border-radius: 30px; background: #fff; box-shadow: var(--shadow); }
.slides { position: relative; aspect-ratio: 16 / 6.2; min-height: 260px; }
.slide { position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: opacity .55s ease; }
.slide.is-active { opacity: 1; pointer-events: auto; }
.slide img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.slider-arrow { position: absolute; top: 50%; z-index: 5; width: 46px; height: 46px; border: 0; border-radius: 50%; background: rgba(255,255,255,.9); color: var(--primary-deep); box-shadow: 0 10px 25px rgba(7,58,104,.18); transform: translateY(-50%); font-size: 24px; }
.slider-arrow.prev { left: 18px; }
.slider-arrow.next { right: 18px; }
.slider-dots { position: absolute; left: 50%; bottom: 18px; z-index: 5; display: flex; gap: 8px; transform: translateX(-50%); }
.slider-dot { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 50%; background: rgba(21,90,157,.28); }
.slider-dot.is-active { width: 28px; border-radius: 999px; background: var(--primary); }
.intro-panel { display: grid; grid-template-columns: 1.1fr .9fr; gap: 44px; align-items: center; }
.content-image { overflow: hidden; border-radius: var(--radius-xl); background: #fff; padding: 16px; box-shadow: var(--shadow-soft); }
.content-image img { width: 100%; max-height: 420px; object-fit: contain; border-radius: 18px; }
.quick-scroll { display: flex; gap: 10px; padding: 4px 0 12px; overflow-x: auto; scrollbar-width: thin; }
.quick-scroll a { flex: 0 0 auto; padding: 11px 18px; border: 1px solid var(--line); border-radius: 999px; background: #fff; color: var(--primary-deep); font-weight: 750; box-shadow: 0 6px 18px rgba(21,90,157,.05); }
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card { border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; padding: 26px; box-shadow: var(--shadow-soft); }
.card p:last-child { margin-bottom: 0; }
.card-kicker { display: inline-flex; margin-bottom: 14px; padding: 6px 10px; border-radius: 999px; background: var(--surface-soft); color: var(--primary-deep); font-size: 13px; font-weight: 800; }
.stat-card { min-height: 190px; position: relative; overflow: hidden; }
.stat-card::after { content: ""; position: absolute; right: -34px; bottom: -34px; width: 110px; height: 110px; border-radius: 50%; background: rgba(16,174,234,.09); }
.feature-card { display: grid; grid-template-columns: 1.05fr .95fr; gap: 32px; align-items: center; padding: 34px; border-radius: var(--radius-xl); background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); }
.feature-card.reverse .feature-copy { order: 2; }
.feature-card.reverse .feature-media { order: 1; }
.feature-media { padding: 14px; border-radius: 22px; background: var(--surface-soft); }
.feature-media img { width: 100%; max-height: 360px; object-fit: contain; border-radius: 16px; }
.list-check { display: grid; gap: 10px; padding: 0; margin: 20px 0 0; list-style: none; }
.list-check li { position: relative; padding-left: 28px; }
.list-check li::before { content: "✓"; position: absolute; left: 0; top: 0; width: 20px; height: 20px; border-radius: 50%; background: var(--surface-soft); color: var(--primary-deep); display: grid; place-items: center; font-size: 12px; font-weight: 900; }
.mini-cards .card { padding: 22px; }
.app-banner { display: grid; grid-template-columns: 1fr .72fr; align-items: center; gap: 34px; padding: 42px; border-radius: 30px; background: linear-gradient(135deg, #E8F7FF 0%, #FFFFFF 100%); border: 1px solid var(--line); box-shadow: var(--shadow); }
.app-banner img { width: 100%; max-height: 320px; object-fit: contain; }
.notice-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 26px; }
.notice-box { border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; padding: 26px; }
.notice-box strong { color: var(--primary-deep); }
.safety-list { display: grid; gap: 14px; }
.safety-item { display: grid; grid-template-columns: 42px 1fr; gap: 14px; align-items: start; }
.safety-item span { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 14px; background: var(--surface-soft); color: var(--primary-deep); font-weight: 900; }
.feedback-card { position: relative; padding-top: 34px; }
.feedback-card::before { content: "“"; position: absolute; top: 8px; left: 22px; color: rgba(16,174,234,.22); font-size: 62px; line-height: 1; font-family: Georgia, serif; }
.feedback-role { color: var(--primary-deep); font-weight: 800; }
.faq-list { display: grid; gap: 14px; }
.faq-item { border: 1px solid var(--line); border-radius: 16px; background: #fff; padding: 22px 24px; }
.faq-item summary { color: var(--primary-deep); font-weight: 800; cursor: pointer; }
.faq-item p { margin: 14px 0 0; color: var(--muted); }
.breadcrumbs { padding: 18px 0; color: var(--muted); font-size: 14px; }
.breadcrumbs a { color: var(--primary-deep); }
.content-prose { max-width: 840px; }
.content-prose h2 { margin-top: 42px; }
.content-prose h3 { margin-top: 28px; }
.split-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 42px; align-items: start; }
.sticky-card { position: sticky; top: 104px; }
.image-gallery { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; }
.image-tile { border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; padding: 14px; }
.image-tile img { width: 100%; height: 230px; object-fit: contain; border-radius: 14px; }
.category-list { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.category-item { border-left: 4px solid var(--primary); border-radius: 14px; background: #fff; padding: 20px; box-shadow: var(--shadow-soft); }
.category-item a { color: var(--primary-deep); font-weight: 800; }
.timeline { display: grid; gap: 18px; }
.timeline-item { display: grid; grid-template-columns: 52px 1fr; gap: 16px; }
.timeline-index { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 16px; background: var(--surface-soft); color: var(--primary-deep); font-weight: 900; }
.compliance-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.compliance-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 26px 0; }
.compliance-grid div { color: var(--muted); font-size: 14px; }
.compliance-grid strong { display: block; margin-bottom: 4px; color: var(--primary-deep); }
.site-footer { padding: 58px 0 24px; background: var(--footer); color: var(--footer-text); }
.footer-grid { display: grid; grid-template-columns: 1.4fr .8fr .8fr; gap: 44px; }
.site-footer h2 { color: #fff; font-size: 18px; }
.footer-brand p { max-width: 520px; color: rgba(234,248,255,.78); }
.footer-links { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.footer-links a { color: rgba(234,248,255,.82); }
.footer-links a:hover { color: #fff; }
.footer-notice { margin-top: 36px; padding-top: 22px; border-top: 1px solid rgba(234,248,255,.18); color: rgba(234,248,255,.7); font-size: 13px; }
.footer-notice p { margin-bottom: 6px; }
@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .header-inner { justify-content: space-between; }
    .menu-toggle { display: block; }
}
@media (max-width: 900px) {
    .section { padding: 60px 0; }
    .hero { padding: 70px 0 56px; }
    .hero-grid, .intro-panel, .notice-grid, .split-section { grid-template-columns: 1fr; }
    .feature-card, .feature-card.reverse, .app-banner { grid-template-columns: 1fr; }
    .feature-card.reverse .feature-copy, .feature-card.reverse .feature-media { order: initial; }
    .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
    .compliance-grid { grid-template-columns: repeat(2, 1fr); }
    .sticky-card { position: static; }
}
@media (max-width: 640px) {
    .container { width: min(calc(100% - 28px), var(--container)); }
    .header-inner { min-height: 66px; gap: 12px; }
    .brand-logo { width: 118px; }
    .header-actions .main-btn { min-height: 40px; padding: 8px 16px; }
    .menu-toggle { width: 40px; height: 40px; }
    .slides { aspect-ratio: 16 / 9.5; min-height: 220px; }
    .hero-slider { width: min(calc(100% - 20px), var(--container)); border-radius: 18px; }
    .slider-arrow { width: 40px; height: 40px; }
    .slider-arrow.prev { left: 8px; }
    .slider-arrow.next { right: 8px; }
    .slider-dots { bottom: 10px; }
    .section-head { align-items: start; flex-direction: column; }
    .grid-2, .grid-3, .grid-4, .category-list, .image-gallery { grid-template-columns: 1fr; }
    .card, .feature-card, .app-banner { padding: 22px; }
    .hero-media, .content-image { padding: 10px; }
    .drawer-nav { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-brand { grid-column: auto; }
    .compliance-grid { grid-template-columns: 1fr; }
    .image-tile img { height: auto; max-height: 280px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}