:root {
    --bg: #f4fbff;
    --surface: #ffffff;
    --soft: #e8f7ff;
    --primary: #10aeea;
    --deep: #155a9d;
    --text: #24384a;
    --muted: #60758a;
    --footer: #073a68;
    --line: #d7edf8;
    --shadow: 0 18px 48px rgba(21, 90, 157, 0.10);
    --radius-lg: 30px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --container: 1220px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    color: var(--text);
    background:
        radial-gradient(circle at 8% 6%, rgba(53, 215, 255, 0.12), transparent 26rem),
        linear-gradient(180deg, #ffffff 0, var(--bg) 28rem, var(--bg) 100%);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.75;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.skip-link {
    position: fixed;
    top: -80px;
    left: 16px;
    z-index: 9999;
    padding: 10px 16px;
    color: #fff;
    background: var(--deep);
    border-radius: 10px;
}
.skip-link:focus { top: 12px; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(215, 237, 248, 0.85);
}
.header-shell {
    width: min(calc(100% - 32px), 1380px);
    min-height: 78px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 22px;
}
.brand-logo { flex: 0 0 auto; width: 132px; }
.brand-logo img { width: 100%; height: 46px; object-fit: contain; }
.desktop-nav {
    min-width: 0;
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(8px, 0.9vw, 18px);
    white-space: nowrap;
}
.desktop-nav a {
    position: relative;
    padding: 27px 0 24px;
    font-size: clamp(13px, 0.9vw, 15px);
    font-weight: 650;
    color: #38536a;
}
.desktop-nav a::after {
    content: "";
    position: absolute;
    left: 50%;
    right: 50%;
    bottom: 14px;
    height: 3px;
    border-radius: 999px;
    background: linear-gradient(135deg, #35d7ff, #1688d8);
    transition: left .2s ease, right .2s ease;
}
.desktop-nav a:hover,
.desktop-nav a.active { color: var(--deep); }
.desktop-nav a:hover::after,
.desktop-nav a.active::after { left: 0; right: 0; }
.header-actions { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.main-btn,
.ghost-btn,
.text-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    border-radius: 999px;
    font-weight: 760;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.main-btn {
    min-width: 92px;
    padding: 0 24px;
    color: #fff;
    background: linear-gradient(135deg, #35d7ff 0%, #1688d8 100%);
    box-shadow: 0 12px 28px rgba(22, 136, 216, 0.24);
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(22, 136, 216, 0.30); }
.ghost-btn { padding: 0 22px; color: var(--deep); border: 1px solid #b9e5f6; background: #fff; }
.text-btn { min-height: auto; justify-content: flex-start; color: var(--deep); border-radius: 0; }
.text-btn::after { content: "→"; margin-left: 8px; transition: transform .2s ease; }
.text-btn:hover::after { transform: translateX(4px); }
.menu-toggle {
    display: none;
    width: 46px;
    height: 46px;
    padding: 11px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fff;
}
.menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 2px; background: var(--deep); }
.drawer-overlay { position: fixed; inset: 0; z-index: 1090; background: rgba(4, 30, 53, .48); }
.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 1100;
    width: min(88vw, 390px);
    padding: 22px;
    overflow-y: auto;
    background: #fff;
    box-shadow: -24px 0 60px rgba(7, 58, 104, .22);
    transform: translateX(105%);
    transition: transform .25s ease;
}
.mobile-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.drawer-head strong { color: var(--deep); font-size: 22px; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 12px; color: var(--deep); background: var(--soft); font-size: 28px; line-height: 1; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 18px 0; }
.drawer-nav a { padding: 11px 12px; color: #38536a; background: #f7fcff; border: 1px solid #e5f4fa; border-radius: 12px; font-weight: 650; }
.drawer-register { width: 100%; }

main { min-height: 65vh; }
.container { width: min(calc(100% - 32px), var(--container)); margin-inline: auto; }
.section { padding: 76px 0; }
.section-tight { padding: 48px 0; }
.section-soft { background: linear-gradient(180deg, rgba(232, 247, 255, .82), rgba(244, 251, 255, .18)); }
.section-dark { color: #eaf8ff; background: var(--footer); }
.section-heading { max-width: 760px; margin-bottom: 34px; }
.section-heading.centered { margin-inline: auto; text-align: center; }
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 850;
    letter-spacing: .14em;
    text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 26px; height: 3px; border-radius: 999px; background: linear-gradient(90deg, #35d7ff, #1688d8); }
h1, h2, h3 { margin-top: 0; color: var(--deep); line-height: 1.25; }
h1 { margin-bottom: 20px; font-size: clamp(34px, 5vw, 64px); letter-spacing: -.03em; }
h2 { margin-bottom: 18px; font-size: clamp(28px, 3.7vw, 44px); letter-spacing: -.02em; }
h3 { margin-bottom: 10px; font-size: 21px; }
p { margin: 0 0 16px; }
.lead { color: #38536a; font-size: clamp(17px, 2vw, 21px); line-height: 1.85; }
.muted { color: var(--muted); }
.top-space { margin-top: 24px; }

.hero-carousel { width: min(calc(100% - 24px), 1460px); margin: 22px auto 0; }
.carousel {
    position: relative;
    overflow: hidden;
    border-radius: clamp(20px, 3vw, 38px);
    background: #dff4ff;
    box-shadow: 0 22px 70px rgba(21, 90, 157, .16);
}
.carousel-track { display: flex; transition: transform .55s cubic-bezier(.22,.61,.36,1); }
.carousel-slide { min-width: 100%; }
.carousel-slide img { width: 100%; height: clamp(230px, 38vw, 560px); object-fit: contain; background: #eaf8ff; }
.carousel-arrow {
    position: absolute;
    top: 50%;
    z-index: 3;
    width: 48px;
    height: 48px;
    margin-top: -24px;
    border: 1px solid rgba(255,255,255,.72);
    border-radius: 50%;
    color: #fff;
    background: rgba(7, 58, 104, .48);
    backdrop-filter: blur(8px);
    font-size: 26px;
}
.carousel-arrow:hover { background: rgba(7, 58, 104, .72); }
.carousel-arrow.prev { left: 18px; }
.carousel-arrow.next { right: 18px; }
.carousel-dots { position: absolute; left: 50%; bottom: 18px; z-index: 3; display: flex; gap: 9px; transform: translateX(-50%); }
.carousel-dot { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.66); }
.carousel-dot.is-active { width: 28px; border-radius: 999px; background: #fff; }

.intro-panel {
    position: relative;
    overflow: hidden;
    padding: clamp(30px, 5vw, 64px);
    border: 1px solid rgba(185, 229, 246, .9);
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,.90);
    box-shadow: var(--shadow);
}
.intro-panel::after {
    content: "";
    position: absolute;
    right: -100px;
    bottom: -110px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(53,215,255,.22), transparent 68%);
}
.intro-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }

.quick-scroll { display: flex; gap: 14px; overflow-x: auto; padding: 4px 2px 16px; scrollbar-width: thin; }
.quick-pill {
    flex: 0 0 235px;
    padding: 20px;
    border: 1px solid #d8eef8;
    border-radius: 999px 24px 24px 999px;
    background: #fff;
    box-shadow: 0 10px 28px rgba(21, 90, 157, .07);
}
.quick-pill strong { display: block; color: var(--deep); font-size: 17px; }
.quick-pill span { display: block; margin: 6px 0 8px; color: var(--muted); font-size: 13px; line-height: 1.55; }
.quick-pill a { color: var(--primary); font-weight: 750; font-size: 13px; }

.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 {
    overflow: hidden;
    padding: 26px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: 0 14px 38px rgba(21,90,157,.07);
}
.card:hover { border-color: #b5e5f7; }
.card-number { display: inline-flex; width: 42px; height: 42px; align-items: center; justify-content: center; margin-bottom: 16px; border-radius: 14px; color: var(--deep); background: var(--soft); font-weight: 900; }
.status-card { min-height: 230px; }
.status-card p { color: var(--muted); }

.split-feature {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(330px, .95fr);
    gap: clamp(28px, 5vw, 66px);
    align-items: center;
}
.split-feature.reverse .feature-media { order: 2; }
.feature-media {
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: #dff5ff;
    box-shadow: var(--shadow);
}
.feature-media img { width: 100%; max-height: 520px; object-fit: contain; }
.feature-copy .detail-list { margin-top: 24px; }
.detail-list { display: grid; gap: 12px; padding: 0; list-style: none; }
.detail-list li { position: relative; padding-left: 28px; color: #38536a; }
.detail-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--primary); font-weight: 900; }

.media-card { padding: 0; }
.media-card img { width: 100%; height: 230px; object-fit: contain; background: #eaf8ff; }
.media-card .card-body { padding: 24px; }
.media-card p { color: var(--muted); }

.app-banner {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
    gap: 34px;
    align-items: center;
    padding: clamp(30px, 5vw, 58px);
    overflow: hidden;
    border-radius: var(--radius-lg);
    color: #eaf8ff;
    background: linear-gradient(125deg, #0d5f9b 0%, #138bd0 52%, #25c8ef 100%);
    box-shadow: 0 22px 60px rgba(13,95,155,.22);
}
.app-banner h2, .app-banner h3 { color: #fff; }
.app-banner p { color: #e8f9ff; }
.app-banner img { width: 100%; max-height: 330px; object-fit: contain; }
.app-banner .ghost-btn { color: #fff; border-color: rgba(255,255,255,.48); background: rgba(255,255,255,.10); }

.safety-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 34px; align-items: center; }
.safety-grid img { width: 100%; max-height: 440px; object-fit: contain; border-radius: var(--radius-lg); background: #eaf8ff; }
.safety-tip { padding: 22px; border-left: 4px solid var(--primary); border-radius: 0 16px 16px 0; background: #fff; box-shadow: 0 12px 32px rgba(21,90,157,.08); }
.safety-tip strong { display: block; margin-bottom: 7px; color: var(--deep); }

.review-card { position: relative; padding-top: 62px; }
.review-card::before { content: "“"; position: absolute; top: 12px; left: 22px; color: #b7e9f8; font: 700 72px/1 Georgia, serif; }
.review-card p { color: #405b70; }
.review-author { display: flex; align-items: center; justify-content: space-between; margin-top: 20px; padding-top: 15px; border-top: 1px solid #edf5f9; color: var(--deep); font-weight: 750; }
.review-author span:last-child { color: var(--muted); font-size: 13px; font-weight: 600; }

.faq-list { display: grid; gap: 12px; }
details { overflow: hidden; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
summary { padding: 18px 22px; color: var(--deep); font-weight: 780; cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; float: right; color: var(--primary); font-size: 22px; }
details[open] summary::after { content: "−"; }
details p { padding: 0 22px 20px; color: var(--muted); }

.page-hero { padding: 70px 0 48px; }
.page-hero-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(310px, .92fr); gap: 48px; align-items: center; }
.page-hero-copy { max-width: 700px; }
.page-hero-media { overflow: hidden; border-radius: var(--radius-lg); background: #e8f7ff; box-shadow: var(--shadow); }
.page-hero-media img { width: 100%; max-height: 470px; object-fit: contain; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; color: var(--muted); font-size: 14px; }
.breadcrumbs a { color: var(--deep); }
.breadcrumbs span::before { content: "/"; margin-right: 8px; color: #9bb2c4; }

.stat-strip { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 1px; overflow: hidden; border: 1px solid var(--line); border-radius: 20px; background: var(--line); }
.stat-item { padding: 22px; background: #fff; }
.stat-item strong { display: block; margin-bottom: 5px; color: var(--deep); font-size: 18px; }
.stat-item span { color: var(--muted); font-size: 14px; }

.content-prose { max-width: 850px; }
.content-prose p { margin-bottom: 20px; }
.feature-list { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; }
.feature-item { padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.feature-item h3 { display: flex; align-items: center; gap: 10px; }
.feature-item h3::before { content: ""; width: 11px; height: 11px; border-radius: 50%; background: linear-gradient(135deg, #35d7ff, #1688d8); box-shadow: 0 0 0 6px #e8f7ff; }

.step-list { counter-reset: steps; display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.step-card { counter-increment: steps; padding: 26px; border-radius: 20px; color: #dff8ff; background: linear-gradient(150deg, #0c4d81, #117eb9); }
.step-card::before { content: "0" counter(steps); display: block; margin-bottom: 18px; color: #6be4ff; font-size: 14px; font-weight: 900; letter-spacing: .12em; }
.step-card h3 { color: #fff; }
.step-card p { color: #dff8ff; }

.notice-panel { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, .55fr); gap: 30px; padding: 34px; border: 1px solid #bde8f7; border-radius: 24px; background: linear-gradient(135deg, #f7fdff, #e7f7ff); }
.notice-panel h2 { font-size: 30px; }
.notice-list { margin: 0; padding-left: 20px; color: #405b70; }
.notice-list li + li { margin-top: 8px; }
.notice-actions { display: flex; flex-direction: column; align-items: stretch; justify-content: center; gap: 12px; }

.category-directory { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 18px; }
.category-card { padding: 24px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.category-card p { color: var(--muted); font-size: 14px; }

.contact-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.contact-card { padding: 28px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.contact-card .contact-label { display: inline-block; margin-bottom: 14px; padding: 5px 10px; border-radius: 999px; color: var(--deep); background: var(--soft); font-size: 12px; font-weight: 800; }

.responsibility-panel { padding: clamp(28px, 5vw, 48px); border-radius: var(--radius-lg); color: #dff8ff; background: linear-gradient(130deg, #073a68, #0e5e93); }
.responsibility-panel h2 { color: #fff; }
.responsibility-panel p { color: #dff8ff; }
.responsibility-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; margin-top: 24px; }
.responsibility-item { padding: 18px; border: 1px solid rgba(255,255,255,.14); border-radius: 16px; background: rgba(255,255,255,.06); }
.responsibility-item strong { display: block; margin-bottom: 6px; color: #fff; }
.responsibility-item span { color: #cfefff; font-size: 14px; }

.site-footer { padding: 62px 0 24px; color: #eaf8ff; background: var(--footer); }
.footer-grid { width: min(calc(100% - 32px), var(--container)); margin: 0 auto; display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 44px; }
.site-footer h2 { margin-bottom: 15px; color: #fff; font-size: 18px; }
.site-footer a { display: block; width: max-content; max-width: 100%; margin: 9px 0; color: #cceeff; }
.site-footer a:hover { color: #fff; }
.footer-brand p { max-width: 450px; color: #cceeff; }
.footer-bottom { width: min(calc(100% - 32px), var(--container)); margin: 42px auto 0; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.12); display: flex; justify-content: space-between; gap: 24px; color: #b9deef; font-size: 13px; }
.footer-bottom p { margin: 0; }
.footer-bottom p:first-child { max-width: 850px; }

@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .header-shell { min-height: 72px; }
    .header-actions { margin-left: auto; }
    .menu-toggle { display: block; }
    .grid-4, .category-directory { grid-template-columns: repeat(2, minmax(0,1fr)); }
}

@media (max-width: 900px) {
    .section { padding: 58px 0; }
    .grid-3, .contact-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .split-feature,
    .app-banner,
    .safety-grid,
    .page-hero-grid,
    .notice-panel { grid-template-columns: 1fr; }
    .split-feature.reverse .feature-media { order: initial; }
    .page-hero { padding-top: 46px; }
    .stat-strip { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .step-list { grid-template-columns: 1fr; }
    .responsibility-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .footer-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .footer-brand { grid-column: 1 / -1; }
    .footer-bottom { flex-direction: column; }
}

@media (max-width: 620px) {
    .header-shell { width: min(calc(100% - 20px), 1380px); gap: 10px; }
    .brand-logo { width: 108px; }
    .brand-logo img { height: 40px; }
    .main-btn { min-width: 76px; padding: 0 18px; }
    .menu-toggle { width: 42px; height: 42px; }
    .container { width: min(calc(100% - 24px), var(--container)); }
    .section { padding: 48px 0; }
    .hero-carousel { width: calc(100% - 16px); margin-top: 12px; }
    .carousel-slide img { height: clamp(190px, 58vw, 340px); }
    .carousel-arrow { width: 40px; height: 40px; margin-top: -20px; font-size: 21px; }
    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }
    .carousel-dots { bottom: 10px; }
    .grid-2, .grid-3, .grid-4, .category-directory, .contact-grid, .feature-list { grid-template-columns: 1fr; }
    .quick-pill { flex-basis: 82vw; }
    .card { padding: 22px; }
    .media-card { padding: 0; }
    .app-banner { padding: 28px 22px; }
    .stat-strip { grid-template-columns: 1fr; }
    .responsibility-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px 20px; }
    .footer-brand { grid-column: 1 / -1; }
    .drawer-nav { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}