:root {
    --bg: #F4FBFF;
    --nav: #FFFFFF;
    --soft: #E8F7FF;
    --card: #FFFFFF;
    --primary: #11AEEA;
    --accent: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(17,174,234,.18);
    --footer: #073A68;
    --shadow: 0 18px 50px rgba(21,90,157,.10);
    --radius: 24px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 0;
    overflow-x: hidden;
    color: var(--text);
    background: var(--bg);
    font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.75;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 2000; background: #fff; color: var(--deep); padding: 10px 16px; border-radius: 10px; box-shadow: var(--shadow); }
.skip-link:focus { top: 16px; }
.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 1000;
    background: rgba(255,255,255,.94);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(16px);
}
.header-inner {
    width: min(100% - 32px, 1360px);
    min-height: 76px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: clamp(12px, 2vw, 28px);
}
.brand-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand-logo img { width: clamp(100px, 9vw, 132px); max-height: 46px; object-fit: contain; }
.desktop-nav { flex: 1; min-width: 0; display: flex; align-items: center; justify-content: center; gap: clamp(8px, 1.25vw, 22px); }
.desktop-nav a { white-space: nowrap; color: var(--text); font-size: clamp(13px, .95vw, 15px); font-weight: 700; padding: 8px 0; position: relative; }
.desktop-nav a::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: 2px; height: 2px; border-radius: 2px; background: var(--primary); transition: .25s ease; }
.desktop-nav a:hover, .desktop-nav a.is-active { color: var(--accent); }
.desktop-nav a:hover::after, .desktop-nav a.is-active::after { left: 0; right: 0; }
.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 10px; }
.main-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 24px; border: 0; border-radius: 999px; background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%); color: #fff; font-weight: 800; box-shadow: 0 10px 24px rgba(22,136,216,.24); white-space: nowrap; transition: transform .2s ease, box-shadow .2s ease; }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(22,136,216,.30); }
.menu-toggle { width: 44px; height: 44px; border: 1px solid var(--border); border-radius: 14px; background: #fff; display: none; align-items: center; justify-content: center; flex-direction: column; gap: 5px; cursor: pointer; }
.menu-toggle span { width: 20px; height: 2px; background: var(--deep); border-radius: 2px; }
.page-main { padding-top: 76px; }
.container { width: min(100% - 32px, 1180px); margin: 0 auto; }
.wide-container { width: min(100% - 32px, 1360px); margin: 0 auto; }
.section { padding: clamp(54px, 7vw, 96px) 0; }
.section-sm { padding: clamp(36px, 5vw, 64px) 0; }
.section-soft { background: var(--soft); }
.section-head { max-width: 760px; margin-bottom: 32px; }
.eyebrow { margin: 0 0 10px; color: var(--accent); font-weight: 800; letter-spacing: .08em; font-size: 14px; }
h1, h2, h3 { color: var(--deep); line-height: 1.3; margin-top: 0; }
h1 { font-size: clamp(34px, 5vw, 64px); letter-spacing: -.04em; }
h2 { font-size: clamp(26px, 3vw, 42px); }
h3 { font-size: clamp(19px, 2vw, 24px); }
p { margin: 0 0 16px; }
.lead { font-size: clamp(17px, 1.7vw, 21px); color: var(--muted); max-width: 820px; }
.hero-copy { padding: clamp(56px, 7vw, 96px) 0; background: radial-gradient(circle at 85% 20%, rgba(53,215,255,.22), transparent 35%), linear-gradient(180deg, #fff 0%, var(--bg) 100%); }
.hero-copy .actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 26px; }
.secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 22px; border-radius: 999px; background: #fff; border: 1px solid var(--border); color: var(--deep); font-weight: 800; }
.carousel-wrap { padding: 24px 0 0; }
.carousel { position: relative; overflow: hidden; border-radius: clamp(18px, 3vw, 32px); background: #dff5ff; box-shadow: var(--shadow); aspect-ratio: 16 / 6.2; }
.carousel-track { position: relative; width: 100%; height: 100%; }
.carousel-slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .5s ease; display: grid; place-items: center; background: #eaf9ff; }
.carousel-slide.is-active { opacity: 1; visibility: visible; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; }
.carousel-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 3; width: 46px; height: 46px; border: 1px solid rgba(255,255,255,.75); border-radius: 50%; background: rgba(7,58,104,.62); color: #fff; font-size: 28px; line-height: 1; cursor: pointer; backdrop-filter: blur(8px); }
.carousel-arrow.prev { left: 18px; }
.carousel-arrow.next { right: 18px; }
.carousel-dots { position: absolute; z-index: 3; left: 50%; bottom: 16px; transform: translateX(-50%); display: flex; gap: 9px; }
.carousel-dot { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.66); cursor: pointer; box-shadow: 0 0 0 1px rgba(7,58,104,.12); }
.carousel-dot.is-active { width: 28px; border-radius: 999px; background: #fff; }
.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)); }
.grid-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.card { min-width: 0; padding: clamp(22px, 3vw, 32px); border-radius: var(--radius); background: var(--card); border: 1px solid var(--border); box-shadow: 0 14px 38px rgba(21,90,157,.07); }
.card p:last-child { margin-bottom: 0; }
.card-link { display: inline-flex; margin-top: 10px; color: var(--accent); font-weight: 800; }
.card-link::after { content: "→"; margin-left: 7px; transition: transform .2s ease; }
.card-link:hover::after { transform: translateX(4px); }
.icon-badge { width: 46px; height: 46px; border-radius: 16px; display: grid; place-items: center; background: linear-gradient(135deg, rgba(53,215,255,.28), rgba(22,136,216,.14)); color: var(--deep); font-weight: 900; margin-bottom: 18px; }
.media-split { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr); align-items: center; gap: clamp(28px, 5vw, 68px); }
.media-split.reverse { grid-template-columns: minmax(320px, .95fr) minmax(0, 1.05fr); }
.media-split.reverse .media-box { order: -1; }
.media-box { min-width: 0; background: #fff; border: 1px solid var(--border); border-radius: 28px; padding: 14px; box-shadow: var(--shadow); }
.media-box img { width: 100%; max-height: 520px; object-fit: contain; border-radius: 20px; background: #edfaff; }
.check-list { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 12px; }
.check-list li { position: relative; padding-left: 30px; color: var(--text); }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--primary); font-weight: 900; }
.notice { padding: 24px 26px; border-radius: 22px; border: 1px solid var(--border); background: linear-gradient(135deg, rgba(232,247,255,.94), #fff); }
.notice strong { color: var(--deep); }
.review-card { position: relative; }
.review-card::before { content: "“"; position: absolute; right: 22px; top: 8px; color: rgba(17,174,234,.15); font-size: 72px; font-family: Georgia, serif; line-height: 1; }
.review-author { color: var(--accent); font-weight: 800; margin-top: 18px; }
.faq-list { display: grid; gap: 14px; }
.faq-item { background: #fff; border: 1px solid var(--border); border-radius: 18px; overflow: hidden; }
.faq-question { width: 100%; padding: 20px 22px; text-align: left; border: 0; background: transparent; color: var(--deep); font-weight: 800; display: flex; align-items: center; justify-content: space-between; gap: 16px; cursor: pointer; }
.faq-question span:last-child { color: var(--primary); font-size: 24px; transition: transform .2s ease; }
.faq-answer { display: none; padding: 0 22px 22px; color: var(--muted); }
.faq-item.is-open .faq-answer { display: block; }
.faq-item.is-open .faq-question span:last-child { transform: rotate(45deg); }
.page-hero { padding: clamp(58px, 8vw, 106px) 0; background: radial-gradient(circle at 82% 20%, rgba(53,215,255,.24), transparent 34%), linear-gradient(145deg, #fff 0%, #e9f9ff 100%); border-bottom: 1px solid var(--border); }
.page-hero .container { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px; align-items: end; }
.page-hero p { color: var(--muted); max-width: 780px; }
.pill { display: inline-flex; align-items: center; min-height: 34px; padding: 0 14px; border-radius: 999px; background: rgba(17,174,234,.12); color: var(--deep); font-weight: 800; font-size: 14px; }
.data-list { display: grid; gap: 16px; }
.data-row { display: grid; grid-template-columns: minmax(140px, .35fr) minmax(0, 1fr); gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--border); }
.data-row:last-child { border-bottom: 0; }
.data-row strong { color: var(--deep); }
.site-footer { background: var(--footer); color: #EAF8FF; padding: 58px 0 24px; }
.footer-grid { width: min(100% - 32px, 1180px); margin: 0 auto; display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 34px; }
.footer-brand img { width: 132px; max-height: 48px; object-fit: contain; margin-bottom: 18px; filter: brightness(0) invert(1); }
.site-footer h2 { color: #fff; font-size: 18px; margin-bottom: 16px; }
.site-footer a { display: block; color: #d7f3ff; margin: 7px 0; }
.site-footer a:hover { color: #fff; }
.footer-note { width: min(100% - 32px, 1180px); margin: 38px auto 0; padding-top: 24px; border-top: 1px solid rgba(234,248,255,.18); color: rgba(234,248,255,.78); font-size: 14px; }
.drawer-overlay { position: fixed; inset: 0; z-index: 1090; background: rgba(7,58,104,.44); opacity: 0; visibility: hidden; transition: .25s ease; }
.mobile-drawer { position: fixed; top: 0; right: 0; z-index: 1100; width: min(86vw, 360px); height: 100dvh; background: #fff; transform: translateX(100%); transition: transform .28s ease; box-shadow: -20px 0 50px rgba(7,58,104,.18); display: flex; flex-direction: column; }
body.drawer-open { overflow: hidden; }
body.drawer-open .drawer-overlay { opacity: 1; visibility: visible; }
body.drawer-open .mobile-drawer { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 20px; border-bottom: 1px solid var(--border); }
.drawer-logo img { width: 112px; max-height: 42px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 14px; background: var(--soft); color: var(--deep); font-size: 28px; cursor: pointer; }
.drawer-nav { padding: 18px; overflow-y: auto; display: grid; gap: 6px; }
.drawer-nav a { padding: 12px 14px; border-radius: 13px; color: var(--text); font-weight: 700; }
.drawer-nav a:hover, .drawer-nav a.is-active { background: var(--soft); color: var(--accent); }
.drawer-register { margin: auto 18px 20px; }
@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .header-inner { justify-content: space-between; }
    .menu-toggle { display: flex; }
}
@media (max-width: 900px) {
    .grid-4, .grid-5 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .media-split, .media-split.reverse { grid-template-columns: 1fr; }
    .media-split.reverse .media-box { order: initial; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .page-hero .container { grid-template-columns: 1fr; }
    .carousel { aspect-ratio: 16 / 8.2; }
}
@media (max-width: 620px) {
    .header-inner { width: min(100% - 20px, 1360px); min-height: 68px; }
    .page-main { padding-top: 68px; }
    .brand-logo img { width: 96px; }
    .main-btn { min-height: 40px; padding: 0 18px; }
    .menu-toggle { width: 40px; height: 40px; }
    .container, .wide-container { width: min(100% - 24px, 1180px); }
    .grid-2, .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr; }
    .card { border-radius: 20px; }
    .carousel { aspect-ratio: 16 / 10; border-radius: 18px; }
    .carousel-arrow { width: 40px; height: 40px; font-size: 24px; }
    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }
    .carousel-dots { bottom: 10px; }
    .footer-grid { grid-template-columns: 1fr; }
    .data-row { grid-template-columns: 1fr; gap: 6px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .001ms !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
}