: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);
    --shadow: 0 18px 46px rgba(21, 90, 157, 0.10);
    --shadow-soft: 0 10px 30px rgba(21, 90, 157, 0.08);
    --radius-lg: 26px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --header-height: 76px;
    --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    padding-top: var(--header-height);
    color: var(--text);
    background: var(--bg);
    font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
body.drawer-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }

.skip-link {
    position: fixed;
    top: -80px;
    left: 16px;
    z-index: 2000;
    padding: 10px 16px;
    border-radius: 10px;
    background: #073A68;
    color: #fff;
    transition: top .2s ease;
}
.skip-link:focus { top: 12px; }

.page-shell { width: min(100% - 32px, 1180px); margin-inline: auto; }
.section { padding: clamp(54px, 7vw, 94px) 0; }
.section-soft { background: var(--surface-soft); }
.section-tight { padding: clamp(36px, 5vw, 64px) 0; }

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    height: var(--header-height);
    border-bottom: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(14px);
}
.site-header__inner {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin-inline: auto;
    display: flex;
    align-items: center;
    gap: clamp(14px, 2vw, 28px);
}
.brand-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand-logo img { width: clamp(118px, 10vw, 156px); max-height: 44px; object-fit: contain; }
.desktop-nav {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(8px, .9vw, 16px);
    white-space: nowrap;
}
.desktop-nav a {
    position: relative;
    flex: 0 0 auto;
    padding: 8px 0;
    color: #31546F;
    font-size: clamp(12px, .92vw, 14px);
    font-weight: 650;
    transition: color .2s ease;
}
.desktop-nav a::after {
    content: "";
    position: absolute;
    left: 50%; right: 50%; bottom: 2px;
    height: 2px;
    border-radius: 99px;
    background: var(--primary);
    transition: left .2s ease, right .2s ease;
}
.desktop-nav a:hover, .desktop-nav a.is-active { color: var(--primary-strong); }
.desktop-nav a:hover::after, .desktop-nav a.is-active::after { left: 0; right: 0; }
.header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.main-btn, .secondary-btn {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    border: 0;
    border-radius: 999px;
    font-weight: 750;
    line-height: 1;
    white-space: nowrap;
    transition: transform .2s ease, box-shadow .2s ease, opacity .2s ease;
}
.main-btn { color: #fff; background: var(--gradient); box-shadow: 0 10px 24px rgba(22, 136, 216, .22); }
.secondary-btn { color: var(--deep-blue); background: #fff; border: 1px solid var(--border); }
.main-btn:hover, .secondary-btn:hover { transform: translateY(-2px); }
.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: #fff;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
}
.menu-toggle span { width: 19px; height: 2px; border-radius: 9px; background: var(--deep-blue); }

.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 1090;
    background: rgba(7, 58, 104, .42);
    opacity: 0;
    transition: opacity .22s ease;
}
.drawer-overlay.is-visible { opacity: 1; }
.mobile-drawer {
    position: fixed;
    inset: 0 0 0 auto;
    z-index: 1100;
    width: min(88vw, 360px);
    padding: 20px;
    transform: translateX(102%);
    background: #fff;
    box-shadow: -20px 0 60px rgba(7, 58, 104, .18);
    overflow-y: auto;
    transition: transform .24s ease;
}
.mobile-drawer.is-open { transform: translateX(0); }
.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: 138px; max-height: 42px; object-fit: contain; }
.drawer-close { width: 40px; height: 40px; border: 1px solid var(--border); border-radius: 50%; color: var(--deep-blue); background: var(--surface-soft); font-size: 26px; line-height: 1; }
.mobile-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding: 20px 0; }
.mobile-nav a { padding: 11px 13px; border: 1px solid var(--border); border-radius: 12px; color: var(--text); background: #fff; font-size: 14px; font-weight: 650; }
.mobile-nav a.is-active { color: var(--primary-strong); background: var(--surface-soft); }
.drawer-register { width: 100%; }

.hero-slider-wrap { padding: 22px 0 0; }
.hero-slider {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #EAF9FF, #FFFFFF);
    box-shadow: var(--shadow);
}
.slider-track { position: relative; aspect-ratio: 16 / 6.15; min-height: 260px; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .5s ease; }
.slide.is-active { opacity: 1; visibility: visible; }
.slide img { width: 100%; height: 100%; object-fit: contain; }
.slider-arrow {
    position: absolute;
    top: 50%;
    z-index: 3;
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255,255,255,.72);
    border-radius: 50%;
    transform: translateY(-50%);
    color: #fff;
    background: rgba(7, 58, 104, .48);
    font-size: 26px;
    line-height: 1;
}
.slider-arrow:hover { background: rgba(7, 58, 104, .72); }
.slider-arrow.prev { left: 18px; }
.slider-arrow.next { right: 18px; }
.slider-dots { position: absolute; z-index: 3; left: 50%; bottom: 16px; display: flex; gap: 8px; transform: translateX(-50%); }
.slider-dot { width: 10px; height: 10px; padding: 0; border: 1px solid rgba(255,255,255,.9); border-radius: 50%; background: rgba(7,58,104,.35); }
.slider-dot.is-active { width: 28px; border-radius: 99px; background: #fff; }

.page-hero { padding: clamp(54px, 7vw, 88px) 0; background: radial-gradient(circle at 85% 20%, rgba(53,215,255,.22), transparent 33%), linear-gradient(180deg, #FFFFFF 0%, #EAF9FF 100%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr); gap: clamp(34px, 6vw, 74px); align-items: center; }
.hero-copy h1, .section-heading h2, .content-copy h2, .notice-panel h2 {
    margin: 0;
    color: var(--deep-blue);
    font-weight: 850;
    line-height: 1.22;
    letter-spacing: -.02em;
}
.hero-copy h1 { max-width: 880px; font-size: clamp(34px, 5vw, 62px); }
.hero-copy > p:not(.eyebrow) { max-width: 760px; margin: 22px 0 0; color: var(--muted); font-size: clamp(16px, 1.5vw, 19px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.eyebrow { margin: 0 0 10px; color: var(--primary-strong); font-size: 13px; font-weight: 850; letter-spacing: .16em; text-transform: uppercase; }
.hero-media, .content-media {
    margin: 0;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: #fff;
    box-shadow: var(--shadow);
}
.hero-media img, .content-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; background: #fff; }
.hero-media figcaption, .content-media figcaption { padding: 14px 18px 18px; color: var(--muted); font-size: 13px; text-align: center; }

.section-heading { max-width: 780px; margin: 0 auto 34px; text-align: center; }
.section-heading h2, .content-copy h2, .notice-panel h2 { font-size: clamp(28px, 3.7vw, 43px); }
.section-heading > p:last-child { margin: 14px 0 0; color: var(--muted); }
.content-copy p { color: var(--muted); }
.content-copy p + p { margin-top: 14px; }
.content-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .88fr); gap: clamp(30px, 5vw, 64px); align-items: center; }
.content-split.is-reversed .content-copy { order: 2; }
.content-split.is-reversed .content-media { order: 1; }

.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.card-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.info-card {
    display: flex;
    min-height: 100%;
    flex-direction: column;
    padding: clamp(22px, 3vw, 30px);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: var(--shadow-soft);
}
.info-card h3 { margin: 0; color: var(--deep-blue); font-size: 20px; line-height: 1.35; }
.info-card p { margin: 12px 0 0; color: var(--muted); font-size: 15px; }
.text-link { display: inline-flex; align-items: center; gap: 8px; margin-top: auto; padding-top: 18px; color: var(--primary-strong); font-weight: 750; }
.text-link span { transition: transform .2s ease; }
.text-link:hover span { transform: translateX(4px); }

.category-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.category-card { padding: 22px; border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; }
.category-card h3 { margin: 0; color: var(--deep-blue); font-size: 18px; }
.category-card p { margin: 10px 0 0; color: var(--muted); font-size: 14px; }
.category-card a { display: inline-flex; margin-top: 14px; color: var(--primary-strong); font-weight: 750; }

.media-card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.media-card { overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; box-shadow: var(--shadow-soft); }
.media-card img { width: 100%; aspect-ratio: 16 / 10; object-fit: contain; background: #fff; }
.media-card__body { padding: 22px; }
.media-card h3 { margin: 0; color: var(--deep-blue); font-size: 20px; }
.media-card p { margin: 10px 0 0; color: var(--muted); font-size: 15px; }
.media-card .text-link { padding-top: 14px; }

.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.review-card { margin: 0; padding: 26px; border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; box-shadow: var(--shadow-soft); }
.review-card blockquote { margin: 0; color: var(--text); font-size: 15px; }
.review-card figcaption { margin-top: 18px; color: var(--primary-strong); font-size: 13px; font-weight: 800; }

.notice-panel {
    display: grid;
    grid-template-columns: minmax(260px, .82fr) minmax(0, 1.18fr);
    gap: clamp(24px, 5vw, 60px);
    padding: clamp(26px, 5vw, 48px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #FFFFFF 0%, #E8F7FF 100%);
    box-shadow: var(--shadow-soft);
}
.notice-copy p { margin: 0; color: var(--muted); }
.notice-copy p + p { margin-top: 12px; }

.faq-list { display: grid; gap: 14px; max-width: 920px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; box-shadow: var(--shadow-soft); }
.faq-item summary { list-style: none; cursor: pointer; padding: 20px 56px 20px 22px; color: var(--deep-blue); font-weight: 800; position: relative; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 22px; top: 50%; transform: translateY(-50%); color: var(--primary-strong); font-size: 26px; font-weight: 400; }
.faq-item[open] summary::after { content: "−"; }
.faq-answer { padding: 0 22px 22px; color: var(--muted); }
.faq-answer p { margin: 0; }

.stat-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-top: 30px; }
.stat-item { padding: 20px; border: 1px solid var(--border); border-radius: 16px; background: #fff; text-align: center; }
.stat-item strong { display: block; color: var(--primary-strong); font-size: 24px; }
.stat-item span { color: var(--muted); font-size: 13px; }

.timeline { display: grid; gap: 16px; counter-reset: step; }
.timeline-item { position: relative; padding: 22px 22px 22px 72px; border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; }
.timeline-item::before { counter-increment: step; content: counter(step); position: absolute; left: 22px; top: 22px; width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: var(--gradient); font-weight: 800; }
.timeline-item h3 { margin: 0; color: var(--deep-blue); }
.timeline-item p { margin: 8px 0 0; color: var(--muted); }

.site-footer { color: #EAF8FF; background: #073A68; }
.footer-grid { display: grid; grid-template-columns: 1.55fr repeat(3, 1fr); gap: 34px; padding-top: 56px; padding-bottom: 42px; }
.footer-brand img { width: 150px; max-height: 44px; object-fit: contain; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 430px; margin: 18px 0 0; color: rgba(234,248,255,.78); font-size: 14px; }
.site-footer h2 { margin: 0 0 16px; color: #fff; font-size: 16px; }
.footer-links { display: grid; gap: 9px; }
.footer-links a { color: rgba(234,248,255,.78); font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 20px; padding-bottom: 24px; border-top: 1px solid rgba(234,248,255,.16); }
.footer-bottom p { margin: 0; color: rgba(234,248,255,.66); font-size: 12px; }

@media (max-width: 1179px) {
    .desktop-nav { display: none; }
    .site-header__inner { justify-content: space-between; }
    .menu-toggle { display: inline-flex; }
}

@media (max-width: 920px) {
    .hero-grid, .content-split, .notice-panel { grid-template-columns: 1fr; }
    .content-split.is-reversed .content-copy, .content-split.is-reversed .content-media { order: initial; }
    .card-grid, .media-card-grid, .review-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .card-grid.four, .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
    .footer-grid > div:last-child { grid-column: 2 / 4; }
    .slider-track { aspect-ratio: 16 / 8; }
}

@media (max-width: 640px) {
    :root { --header-height: 68px; }
    .page-shell, .site-header__inner { width: min(100% - 24px, 1180px); }
    .site-header__inner { gap: 10px; }
    .brand-logo img { width: 116px; }
    .header-actions { gap: 7px; }
    .header-actions .main-btn { min-height: 40px; padding: 9px 16px; font-size: 14px; }
    .menu-toggle { width: 40px; height: 40px; }
    .hero-slider-wrap { padding-top: 12px; }
    .hero-slider { border-radius: 18px; }
    .slider-track { aspect-ratio: 4 / 3; min-height: 220px; }
    .slider-arrow { width: 38px; height: 38px; font-size: 22px; }
    .slider-arrow.prev { left: 10px; }
    .slider-arrow.next { right: 10px; }
    .slider-dots { bottom: 10px; }
    .page-hero { padding-top: 44px; }
    .hero-copy h1 { font-size: clamp(32px, 11vw, 44px); }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .main-btn, .hero-actions .secondary-btn { width: 100%; }
    .card-grid, .card-grid.four, .category-grid, .media-card-grid, .review-grid, .stat-strip { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px 18px; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-grid > div:last-child { grid-column: auto; }
    .footer-bottom { flex-direction: column; }
    .mobile-nav { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}