:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-soft: #E8F7FF;
    --primary: #10AEEA;
    --primary-strong: #1688D8;
    --deep-blue: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(16, 174, 234, 0.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --shadow: 0 16px 40px rgba(20, 112, 170, 0.12);
    --shadow-soft: 0 8px 24px rgba(20, 112, 170, 0.09);
    --radius-lg: 24px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --header-height: 76px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    background: linear-gradient(180deg, #F8FDFF 0%, var(--bg) 32%, #EEF9FF 100%);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.72;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
.skip-link { position: fixed; left: 12px; top: -80px; z-index: 9999; padding: 10px 14px; border-radius: 10px; background: var(--primary-strong); color: #fff; }
.skip-link:focus { top: 12px; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(255,255,255,.96);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(16px);
    box-shadow: 0 6px 18px rgba(12, 95, 145, .06);
}
.header-inner {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: clamp(12px, 1.3vw, 22px);
}
.brand-logo { flex: 0 0 auto; width: clamp(132px, 11vw, 176px); }
.brand-logo img, .drawer-logo img, .footer-logo img { width: 100%; height: auto; object-fit: contain; }
.desktop-nav {
    min-width: 0;
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(5px, .7vw, 12px);
    overflow: hidden;
}
.nav-link {
    flex: 0 0 auto;
    white-space: nowrap;
    padding: 8px clamp(4px, .3vw, 8px);
    border-radius: 10px;
    color: #385A73;
    font-size: clamp(12px, .85vw, 14px);
    font-weight: 700;
    transition: .2s ease;
}
.nav-link:hover, .nav-link.active { color: var(--primary-strong); background: var(--surface-soft); }
.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: 42px;
    padding: 0 22px;
    border-radius: 999px;
    background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    color: #fff;
    font-weight: 800;
    box-shadow: 0 9px 22px rgba(22, 136, 216, .23);
    white-space: nowrap;
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(22, 136, 216, .3); }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--border); border-radius: 12px; background: #fff; padding: 10px; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 2px; background: var(--deep-blue); }
.drawer-backdrop { position: fixed; inset: 0; z-index: 1090; background: rgba(5, 41, 71, .42); }
.mobile-drawer { position: fixed; top: 0; right: 0; z-index: 1100; width: min(88vw, 360px); height: 100dvh; padding: 18px; overflow-y: auto; background: #fff; transform: translateX(105%); transition: transform .25s ease; box-shadow: -20px 0 40px rgba(7, 58, 104, .18); }
.mobile-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.drawer-logo { width: 150px; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 12px; background: var(--surface-soft); color: var(--deep-blue); font-size: 28px; cursor: pointer; }
.drawer-nav { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px; margin: 18px 0; }
.drawer-link { padding: 11px 12px; border: 1px solid var(--border); border-radius: 12px; background: #fbfeff; color: #365F7E; font-weight: 700; text-align: center; }
.drawer-link.active { color: var(--primary-strong); background: var(--surface-soft); }
.drawer-register { width: 100%; }
main { min-height: 60vh; }
.container { width: min(100% - 32px, 1220px); margin-inline: auto; }
.wide-container { width: min(100% - 32px, 1360px); margin-inline: auto; }
.section { padding: clamp(46px, 6vw, 88px) 0; }
.section.compact { padding: clamp(34px, 4.5vw, 62px) 0; }
.section-soft { background: linear-gradient(180deg, rgba(232,247,255,.78), rgba(244,251,255,.35)); border-block: 1px solid rgba(16,174,234,.10); }
.section-heading { max-width: 780px; margin-bottom: 26px; }
.section-heading.center { margin-inline: auto; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 7px; margin-bottom: 9px; color: var(--primary-strong); font-size: 14px; font-weight: 800; letter-spacing: .08em; }
.eyebrow::before { content: ""; width: 24px; height: 3px; border-radius: 3px; background: linear-gradient(90deg, var(--primary), var(--primary-strong)); }
h1, h2, h3 { margin: 0; color: var(--deep-blue); line-height: 1.28; }
h1 { font-size: clamp(32px, 5vw, 56px); }
h2 { font-size: clamp(25px, 3.4vw, 38px); }
h3 { font-size: clamp(18px, 2vw, 23px); }
p { margin: 12px 0 0; }
.lead { color: #46677F; font-size: clamp(16px, 1.5vw, 19px); }
.page-hero { padding: clamp(54px, 8vw, 96px) 0; background: radial-gradient(circle at 12% 10%, rgba(53,215,255,.20), transparent 30%), linear-gradient(135deg, #F7FDFF, #E8F7FF); border-bottom: 1px solid var(--border); }
.page-hero-inner { display: grid; grid-template-columns: minmax(0,1.25fr) minmax(280px,.75fr); gap: clamp(24px, 5vw, 68px); align-items: center; }
.page-hero-copy { max-width: 760px; }
.page-hero-copy .main-btn { margin-top: 22px; }
.hero-note { padding: 24px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: rgba(255,255,255,.78); box-shadow: var(--shadow-soft); }
.hero-note ul, .check-list { margin: 14px 0 0; padding: 0; list-style: none; }
.hero-note li, .check-list li { position: relative; padding-left: 25px; margin: 9px 0; color: #486B84; }
.hero-note li::before, .check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--primary-strong); font-weight: 900; }
.carousel-wrap { padding: 24px 0 0; }
.carousel { position: relative; overflow: hidden; border: 1px solid var(--border); border-radius: clamp(16px, 2.4vw, 28px); background: #eaf8ff; box-shadow: var(--shadow); aspect-ratio: 16 / 6.3; }
.carousel-track { display: flex; height: 100%; transition: transform .55s ease; }
.carousel-slide { flex: 0 0 100%; height: 100%; display: grid; place-items: center; background: #eefaff; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; }
.carousel-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 2; width: clamp(38px, 4vw, 50px); height: clamp(38px, 4vw, 50px); border: 1px solid rgba(255,255,255,.76); border-radius: 50%; background: rgba(7,58,104,.58); color: #fff; font-size: 24px; cursor: pointer; backdrop-filter: blur(6px); }
.carousel-arrow.prev { left: 14px; }
.carousel-arrow.next { right: 14px; }
.carousel-dots { position: absolute; left: 50%; bottom: 14px; z-index: 2; display: flex; gap: 8px; transform: translateX(-50%); }
.carousel-dot { width: 9px; height: 9px; padding: 0; border: 0; border-radius: 999px; background: rgba(255,255,255,.68); box-shadow: 0 0 0 1px rgba(8,67,109,.16); cursor: pointer; transition: width .2s ease, background .2s ease; }
.carousel-dot.active { width: 28px; background: #fff; }
.intro-panel { display: grid; grid-template-columns: minmax(0,1.2fr) minmax(260px,.8fr); gap: 24px; align-items: stretch; }
.content-card, .feature-card, .review-card, .faq-item, .notice-card, .media-card, .stat-card { border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); box-shadow: var(--shadow-soft); }
.content-card { padding: clamp(22px, 3vw, 34px); }
.content-card p { color: #4F6E84; }
.card-link, .text-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; color: var(--primary-strong); font-weight: 800; }
.card-link::after, .text-link::after { content: "→"; transition: transform .2s ease; }
.card-link:hover::after, .text-link:hover::after { transform: translateX(3px); }
.grid { display: grid; gap: 20px; }
.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)); }
.quick-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; }
.quick-card { min-height: 190px; display: flex; flex-direction: column; padding: 22px; border: 1px solid var(--border); border-radius: 18px; background: linear-gradient(180deg,#fff,#f7fcff); box-shadow: var(--shadow-soft); }
.quick-card p { flex: 1; color: #587287; font-size: 14px; }
.media-split { display: grid; grid-template-columns: minmax(300px,.85fr) minmax(0,1.15fr); gap: clamp(24px, 4vw, 54px); align-items: center; }
.media-split.reverse { grid-template-columns: minmax(0,1.15fr) minmax(300px,.85fr); }
.media-split.reverse .media-visual { order: 2; }
.media-visual { overflow: hidden; min-height: 280px; display: grid; place-items: center; padding: 16px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: linear-gradient(145deg,#fff,#e8f7ff); box-shadow: var(--shadow); }
.media-visual img { width: 100%; max-height: 470px; object-fit: contain; }
.media-copy p { color: #4D6E85; }
.feature-card { padding: 24px; }
.feature-card p { color: #587287; }
.icon-chip { display: grid; place-items: center; width: 46px; height: 46px; margin-bottom: 16px; border-radius: 14px; background: var(--surface-soft); color: var(--primary-strong); font-weight: 900; }
.tag-list { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 18px; }
.tag { padding: 7px 12px; border-radius: 999px; background: var(--surface-soft); color: var(--deep-blue); font-size: 13px; font-weight: 800; }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.review-card { padding: 22px; }
.review-card blockquote { margin: 0; color: #47677E; }
.review-card footer { margin-top: 15px; color: var(--primary-strong); font-weight: 800; }
.review-card footer::before { content: "— "; }
.notice-row { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.notice-card { padding: 22px; }
.notice-card strong { color: var(--deep-blue); }
.notice-card p { color: #587287; }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 0 22px; }
.faq-item summary { cursor: pointer; padding: 19px 0; color: var(--deep-blue); font-weight: 800; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; float: right; color: var(--primary-strong); font-size: 21px; }
.faq-item[open] summary::after { content: "−"; }
.faq-item p { margin: 0; padding: 0 0 20px; color: #526F84; }
.cta-panel { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 24px; align-items: center; padding: clamp(24px, 4vw, 42px); border-radius: var(--radius-lg); background: linear-gradient(135deg,#0DAEEA,#176FB8); color: #fff; box-shadow: var(--shadow); }
.cta-panel h2, .cta-panel p { color: #fff; }
.cta-panel .main-btn { background: #fff; color: var(--primary-strong); box-shadow: none; }
.content-columns { display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; }
.article-card { padding: clamp(22px, 3vw, 34px); border: 1px solid var(--border); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-soft); }
.article-card h2 { margin-bottom: 12px; }
.article-card h3 { margin-top: 24px; }
.article-card p { color: #4E6C82; }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step { position: relative; padding: 20px 20px 20px 66px; border: 1px solid var(--border); border-radius: 16px; background: #fff; }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 18px; top: 18px; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--surface-soft); color: var(--primary-strong); font-weight: 900; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; box-shadow: var(--shadow-soft); }
.info-table { width: 100%; border-collapse: collapse; min-width: 680px; }
.info-table th, .info-table td { padding: 15px 17px; border-bottom: 1px solid var(--border); text-align: left; }
.info-table th { background: var(--surface-soft); color: var(--deep-blue); }
.info-table td { color: #4D6C82; }
.info-table tr:last-child td { border-bottom: 0; }
.site-footer { margin-top: 0; background: var(--footer); color: var(--footer-text); }
.footer-inner { width: min(100% - 32px, 1220px); margin: 0 auto; padding: 52px 0 34px; display: grid; grid-template-columns: 1.2fr .9fr .9fr; gap: 34px; }
.footer-logo { display: block; width: 160px; padding: 8px 12px; border-radius: 12px; background: #fff; }
.footer-brand p, .footer-notice p { color: rgba(234,248,255,.78); }
.footer-links h2, .footer-notice h2 { color: #fff; font-size: 18px; }
.footer-links div { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 9px 16px; margin-top: 12px; }
.footer-links a { color: rgba(234,248,255,.82); }
.footer-links a:hover, .footer-bottom a:hover { color: #fff; }
.footer-bottom { width: min(100% - 32px, 1220px); margin: 0 auto; padding: 18px 0 26px; display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid rgba(234,248,255,.16); color: rgba(234,248,255,.7); font-size: 14px; }
.footer-bottom p { margin: 0; }
.footer-bottom div { display: flex; gap: 18px; }
@media (max-width: 1179px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: block; }
    .header-inner { justify-content: space-between; }
}
@media (max-width: 980px) {
    .quick-grid, .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .grid-3, .review-grid, .notice-row { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .page-hero-inner, .intro-panel, .content-columns { grid-template-columns: 1fr; }
    .media-split, .media-split.reverse { grid-template-columns: 1fr; }
    .media-split.reverse .media-visual { order: 0; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 680px) {
    :root { --header-height: 68px; }
    .header-inner, .container, .wide-container, .footer-inner, .footer-bottom { width: min(100% - 24px, 1220px); }
    .brand-logo { width: 128px; }
    .header-actions .main-btn { min-height: 38px; padding-inline: 16px; }
    .menu-toggle { width: 40px; height: 40px; }
    .carousel { aspect-ratio: 16 / 9.4; border-radius: 16px; }
    .carousel-arrow { width: 38px; height: 38px; font-size: 20px; }
    .carousel-arrow.prev { left: 8px; }
    .carousel-arrow.next { right: 8px; }
    .quick-grid, .grid-2, .grid-3, .grid-4, .review-grid, .notice-row { grid-template-columns: 1fr; }
    .quick-card { min-height: auto; }
    .media-visual { min-height: 220px; }
    .cta-panel { grid-template-columns: 1fr; }
    .cta-panel .main-btn { width: 100%; }
    .footer-inner { grid-template-columns: 1fr; }
    .footer-brand { grid-column: auto; }
    .footer-bottom { flex-direction: column; }
    .drawer-nav { grid-template-columns: 1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .001ms !important; animation-duration: .001ms !important; }
}