:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-soft: #E8F7FF;
    --primary: #10AEEA;
    --primary-strong: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(16, 174, 234, 0.18);
    --footer: #073A68;
    --shadow: 0 16px 40px rgba(22, 136, 216, 0.12);
    --radius: 24px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 9999; padding: 10px 16px; background: #fff; color: var(--deep); border-radius: 10px; }
.skip-link:focus { top: 16px; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}
.header-inner {
    width: min(calc(100% - 32px), 1360px);
    min-height: 76px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: clamp(12px, 1.3vw, 24px);
    min-width: 0;
}
.brand-logo { flex: 0 0 auto; width: clamp(112px, 9vw, 146px); }
.brand-logo img { width: 100%; height: 42px; object-fit: contain; }
.desktop-nav { flex: 1 1 auto; min-width: 0; display: flex; align-items: center; justify-content: center; gap: clamp(5px, .7vw, 12px); white-space: nowrap; }
.desktop-nav a { position: relative; padding: 8px clamp(4px, .45vw, 8px); color: var(--muted); font-size: clamp(12px, .95vw, 14px); font-weight: 650; white-space: nowrap; }
.desktop-nav a::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: 1px; height: 2px; background: var(--primary); transition: .25s ease; }
.desktop-nav a:hover, .desktop-nav a.active { color: var(--primary-strong); }
.desktop-nav a:hover::after, .desktop-nav a.active::after { left: 8px; right: 8px; }
.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 10px; }
.main-btn, .secondary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 24px;
    border-radius: 999px;
    font-weight: 750;
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn { background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%); color: #fff; box-shadow: 0 10px 24px rgba(22, 136, 216, .22); }
.secondary-btn { color: var(--primary-strong); background: #fff; border: 1px solid var(--border); }
.main-btn:hover, .secondary-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(22, 136, 216, .18); }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 10px; border: 1px solid var(--border); border-radius: 14px; background: #fff; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; background: var(--deep); border-radius: 4px; }
.mobile-drawer { position: fixed; top: 0; right: 0; z-index: 1200; width: min(88vw, 380px); height: 100dvh; padding: 20px; background: #fff; transform: translateX(105%); transition: transform .28s ease; overflow-y: auto; box-shadow: -20px 0 50px rgba(7, 58, 104, .18); }
.mobile-drawer.open { transform: translateX(0); }
.drawer-backdrop { position: fixed; inset: 0; z-index: 1100; background: rgba(7, 58, 104, .36); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.drawer-logo img { width: 132px; height: 42px; object-fit: contain; }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 50%; background: var(--surface-soft); color: var(--deep); font-size: 30px; line-height: 1; cursor: pointer; }
.mobile-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; padding: 20px 0; }
.mobile-nav a { padding: 11px 12px; border-radius: 12px; color: var(--text); background: var(--bg); border: 1px solid transparent; font-weight: 650; text-align: center; }
.mobile-nav a.active, .mobile-nav a:hover { color: var(--primary-strong); border-color: var(--border); background: var(--surface-soft); }
.drawer-register { width: 100%; }
main { min-height: 60vh; }
.container { width: min(calc(100% - 32px), 1180px); margin: 0 auto; }
.wide-container { width: min(calc(100% - 32px), 1360px); margin: 0 auto; }
.section { padding: clamp(54px, 7vw, 92px) 0; }
.section.compact { padding: clamp(38px, 5vw, 64px) 0; }
.section-soft { background: linear-gradient(180deg, rgba(232,247,255,.7), rgba(244,251,255,.15)); }
.section-title { max-width: 760px; margin: 0 auto 34px; text-align: center; }
.section-title .eyebrow, .eyebrow { display: inline-flex; padding: 6px 13px; border-radius: 999px; background: var(--surface-soft); color: var(--primary-strong); font-size: 13px; font-weight: 800; letter-spacing: .04em; }
.section-title h2, .page-hero h1 { margin: 14px 0 12px; color: var(--deep); line-height: 1.22; }
.section-title h2 { font-size: clamp(28px, 4vw, 44px); }
.section-title p { margin: 0; color: var(--muted); }
.page-hero { padding: clamp(64px, 8vw, 108px) 0; background: radial-gradient(circle at top right, rgba(53,215,255,.22), transparent 38%), linear-gradient(145deg, #f9fdff, #eaf8ff); border-bottom: 1px solid var(--border); }
.page-hero-inner { width: min(calc(100% - 32px), 1180px); margin: 0 auto; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(260px, .85fr); align-items: center; gap: clamp(30px, 6vw, 76px); }
.page-hero h1 { font-size: clamp(34px, 5vw, 58px); }
.page-hero p { max-width: 720px; margin: 0 0 24px; color: var(--muted); font-size: clamp(16px, 1.5vw, 19px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-image { overflow: hidden; border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); border: 1px solid var(--border); }
.hero-image img { width: 100%; height: clamp(240px, 30vw, 390px); object-fit: contain; background: #fff; }
.home-carousel-wrap { padding: 24px 0 0; }
.carousel { position: relative; overflow: hidden; border-radius: clamp(18px, 2vw, 28px); background: #e8f7ff; box-shadow: var(--shadow); border: 1px solid var(--border); }
.carousel-track { display: flex; transition: transform .55s ease; will-change: transform; }
.carousel-slide { min-width: 100%; aspect-ratio: 16/6.7; background: #e8f7ff; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; }
.carousel-arrow { position: absolute; top: 50%; z-index: 3; width: 46px; height: 46px; margin-top: -23px; border: 0; border-radius: 50%; background: rgba(255,255,255,.9); color: var(--deep); font-size: 30px; cursor: pointer; box-shadow: 0 8px 22px rgba(7,58,104,.16); }
.carousel-prev { left: 18px; }
.carousel-next { right: 18px; }
.carousel-dots { position: absolute; left: 0; right: 0; bottom: 14px; z-index: 4; display: flex; justify-content: center; gap: 8px; }
.carousel-dot { width: 9px; height: 9px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.65); cursor: pointer; box-shadow: 0 1px 5px rgba(7,58,104,.2); }
.carousel-dot.active { width: 26px; border-radius: 999px; background: var(--primary); }
.intro-panel { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(280px, .9fr); gap: 28px; padding: clamp(26px, 4vw, 46px); background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.intro-panel h1 { margin: 10px 0 14px; color: var(--deep); font-size: clamp(32px, 4.5vw, 54px); line-height: 1.15; }
.intro-panel p { color: var(--muted); }
.intro-side { display: grid; gap: 14px; }
.info-strip { padding: 18px; border-radius: 18px; background: var(--surface-soft); border: 1px solid var(--border); }
.info-strip strong { display: block; color: var(--deep); margin-bottom: 6px; }
.grid-2, .grid-3, .grid-4 { 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 { overflow: hidden; padding: 24px; background: #fff; border: 1px solid var(--border); border-radius: 20px; box-shadow: 0 12px 34px rgba(22,136,216,.08); }
.card h2, .card h3 { margin: 0 0 10px; color: var(--deep); line-height: 1.35; }
.card h3 { font-size: 20px; }
.card p { margin: 0; color: var(--muted); }
.card-link { display: inline-flex; margin-top: 16px; color: var(--primary-strong); font-weight: 800; }
.card-link::after { content: "→"; margin-left: 6px; }
.media-card { padding: 0; }
.media-card img { width: 100%; height: 220px; object-fit: contain; background: #fafdff; border-bottom: 1px solid var(--border); }
.media-card .card-body { padding: 22px; }
.feature-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, .85fr); gap: 34px; align-items: center; }
.feature-split.reverse > :first-child { order: 2; }
.feature-split.reverse > :last-child { order: 1; }
.feature-copy h2 { margin: 12px 0 14px; color: var(--deep); font-size: clamp(28px, 4vw, 44px); line-height: 1.25; }
.feature-copy p { color: var(--muted); }
.feature-copy ul, .check-list { margin: 18px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.feature-copy li, .check-list li { position: relative; padding-left: 28px; color: var(--text); }
.feature-copy li::before, .check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--primary); font-weight: 900; }
.feature-image { overflow: hidden; border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow); background: #fff; }
.feature-image img { width: 100%; height: clamp(260px, 34vw, 430px); object-fit: contain; }
.stats-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.stat { padding: 24px; text-align: center; border-radius: 18px; background: #fff; border: 1px solid var(--border); }
.stat strong { display: block; color: var(--primary-strong); font-size: 28px; }
.stat span { color: var(--muted); font-size: 14px; }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.review-card { position: relative; padding: 26px; background: #fff; border: 1px solid var(--border); border-radius: 20px; }
.review-card::before { content: "“"; position: absolute; right: 18px; top: 0; color: rgba(16,174,234,.16); font-size: 70px; line-height: 1; }
.review-card p { position: relative; margin: 0 0 16px; color: var(--text); }
.review-card strong { color: var(--primary-strong); }
.notice-box { padding: 26px; border-radius: 20px; background: linear-gradient(135deg, #0b6ba9, #0f96cf); color: #fff; box-shadow: var(--shadow); }
.notice-box h2, .notice-box h3 { margin-top: 0; color: #fff; }
.notice-box p { color: rgba(255,255,255,.9); }
.faq-list { display: grid; gap: 14px; }
details { padding: 20px 22px; background: #fff; border: 1px solid var(--border); border-radius: 16px; }
summary { cursor: pointer; color: var(--deep); font-weight: 800; }
details p { margin: 14px 0 0; color: var(--muted); }
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.step { counter-increment: step; padding: 24px; background: #fff; border: 1px solid var(--border); border-radius: 18px; }
.step::before { content: counter(step); display: inline-grid; place-items: center; width: 36px; height: 36px; margin-bottom: 12px; border-radius: 50%; color: #fff; background: linear-gradient(135deg, #35D7FF, #1688D8); font-weight: 900; }
.step h3 { margin: 0 0 8px; color: var(--deep); }
.step p { margin: 0; color: var(--muted); }
.cta-panel { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: clamp(28px, 4vw, 44px); border-radius: var(--radius); background: linear-gradient(135deg, #e7f8ff, #ffffff); border: 1px solid var(--border); box-shadow: var(--shadow); }
.cta-panel h2 { margin: 0 0 8px; color: var(--deep); }
.cta-panel p { margin: 0; color: var(--muted); }
.site-footer { padding: 64px 0 0; color: #EAF8FF; background: var(--footer); }
.footer-grid { width: min(calc(100% - 32px), 1180px); margin: 0 auto; display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 36px; }
.footer-brand img { width: 142px; height: 46px; object-fit: contain; margin-bottom: 16px; filter: brightness(0) invert(1); }
.site-footer h2 { margin: 0 0 14px; color: #fff; font-size: 18px; }
.site-footer p, .site-footer a { color: rgba(234,248,255,.82); }
.site-footer a { display: block; margin: 8px 0; }
.site-footer a:hover { color: #fff; }
.footer-bottom { margin-top: 42px; padding: 18px 16px; text-align: center; border-top: 1px solid rgba(255,255,255,.12); color: rgba(234,248,255,.72); font-size: 14px; }
@media (max-width: 1240px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: block; }
    .header-inner { min-height: 70px; }
}
@media (max-width: 900px) {
    .grid-3, .grid-4, .review-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .page-hero-inner, .intro-panel, .feature-split { grid-template-columns: 1fr; }
    .feature-split.reverse > :first-child, .feature-split.reverse > :last-child { order: initial; }
    .stats-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .steps { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .header-inner { width: min(calc(100% - 20px), 1360px); gap: 8px; }
    .brand-logo { width: 106px; }
    .brand-logo img { height: 38px; }
    .main-btn { min-height: 40px; padding: 9px 18px; }
    .header-actions { gap: 7px; }
    .carousel-slide { aspect-ratio: 16/9; }
    .carousel-arrow { width: 38px; height: 38px; margin-top: -19px; font-size: 24px; }
    .carousel-prev { left: 10px; }
    .carousel-next { right: 10px; }
    .grid-2, .grid-3, .grid-4, .review-grid, .stats-row, .footer-grid { grid-template-columns: 1fr; }
    .mobile-nav { grid-template-columns: 1fr 1fr; }
    .cta-panel { align-items: flex-start; flex-direction: column; }
    .hero-actions { width: 100%; }
    .hero-actions .main-btn, .hero-actions .secondary-btn { flex: 1 1 140px; }
    .media-card img { height: 190px; }
}