:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-soft: #E8F7FF;
    --primary: #10AEEA;
    --primary-deep: #1688D8;
    --heading: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(16,174,234,.18);
    --footer: #073A68;
    --shadow: 0 16px 40px rgba(17, 112, 171, .11);
    --radius-lg: 26px;
    --radius-md: 18px;
    --container: min(100% - 32px, 1360px);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", 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 { font: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 9999; padding: 10px 16px; background: #fff; border-radius: 10px; box-shadow: var(--shadow); }
.skip-link:focus { top: 12px; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    background: rgba(255,255,255,.96);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(14px);
}
.header-inner {
    width: var(--container);
    min-height: 76px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: clamp(12px, 1.8vw, 26px);
}
.brand-logo { flex: 0 0 auto; width: clamp(104px, 9vw, 136px); }
.brand-logo img, .drawer-logo img, .footer-brand img { width: 100%; height: auto; object-fit: contain; }
.desktop-nav {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(5px, .72vw, 13px);
}
.desktop-nav a {
    white-space: nowrap;
    color: #39536b;
    font-size: clamp(12px, .88vw, 14px);
    font-weight: 700;
    padding: 8px 4px;
    border-bottom: 2px solid transparent;
    transition: .2s ease;
}
.desktop-nav a:hover, .desktop-nav a.is-active { color: var(--primary-deep); border-color: var(--primary); }
.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: 0;
    border-radius: 999px;
    color: #fff;
    font-weight: 800;
    white-space: nowrap;
    background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    box-shadow: 0 10px 24px rgba(22,136,216,.24);
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(22,136,216,.3); }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 10px; border: 1px solid var(--border); border-radius: 13px; background: #fff; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 2px; background: var(--heading); }
.drawer-backdrop { position: fixed; inset: 0; z-index: 1100; background: rgba(7,58,104,.38); }
.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1200;
    width: min(88vw, 380px);
    height: 100dvh;
    padding: 20px;
    overflow-y: auto;
    background: #fff;
    box-shadow: -18px 0 50px rgba(7,58,104,.2);
    transform: translateX(105%);
    transition: transform .25s ease;
}
.mobile-drawer.is-open { transform: translateX(0); }
.drawer-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.drawer-logo { width: 118px; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: var(--surface-soft); color: var(--heading); font-size: 28px; line-height: 1; }
.mobile-nav { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 9px; margin: 18px 0; }
.mobile-nav a { padding: 11px 12px; border: 1px solid var(--border); border-radius: 12px; color: #36536d; background: #fbfeff; font-weight: 700; text-align: center; }
.mobile-nav a.is-active { color: #fff; border-color: transparent; background: linear-gradient(135deg, #35D7FF, #1688D8); }
.drawer-register { width: 100%; }
main { min-height: 60vh; }
.container { width: var(--container); margin-inline: auto; }
.section { padding: clamp(54px, 7vw, 96px) 0; }
.section-tight { padding: clamp(38px, 5vw, 68px) 0; }
.section-soft { background: linear-gradient(180deg, rgba(232,247,255,.72), rgba(244,251,255,.12)); }
.section-head { max-width: 820px; margin: 0 auto 30px; text-align: center; }
.eyebrow { display: inline-flex; padding: 6px 13px; border: 1px solid var(--border); border-radius: 999px; color: var(--primary-deep); background: #fff; font-size: 13px; font-weight: 800; }
h1, h2, h3 { margin: 0 0 14px; color: var(--heading); line-height: 1.28; }
h1 { font-size: clamp(34px, 5vw, 64px); }
h2 { font-size: clamp(27px, 3.4vw, 44px); }
h3 { font-size: clamp(19px, 2vw, 25px); }
p { margin: 0 0 16px; }
.lead { color: #3b5870; font-size: clamp(17px, 1.7vw, 20px); }
.muted { color: var(--muted); }
.hero-copy { padding: clamp(58px, 8vw, 108px) 0 clamp(44px, 6vw, 78px); background: radial-gradient(circle at 85% 20%, rgba(53,215,255,.22), transparent 30%), linear-gradient(180deg,#fff,#edf9ff); }
.hero-copy .container { max-width: 1020px; text-align: center; }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 26px; }
.text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--primary-deep); font-weight: 800; }
.text-link::after { content: "→"; }
.secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 0 20px; border: 1px solid var(--border); border-radius: 999px; background: #fff; color: var(--primary-deep); font-weight: 800; }
.carousel-wrap { width: var(--container); margin: 24px auto 0; }
.carousel { position: relative; overflow: hidden; border-radius: var(--radius-lg); background: #dff4ff; box-shadow: var(--shadow); }
.carousel-track { display: flex; transition: transform .55s ease; }
.carousel-slide { min-width: 100%; }
.carousel-slide img { width: 100%; height: clamp(220px, 42vw, 610px); object-fit: contain; background: #eaf8ff; }
.carousel-arrow { position: absolute; top: 50%; z-index: 3; width: 46px; height: 46px; border: 1px solid rgba(255,255,255,.7); border-radius: 50%; color: #fff; background: rgba(7,58,104,.5); transform: translateY(-50%); cursor: pointer; }
.carousel-arrow.prev { left: 16px; }
.carousel-arrow.next { right: 16px; }
.carousel-dots { position: absolute; left: 50%; bottom: 14px; z-index: 3; display: flex; gap: 8px; transform: translateX(-50%); }
.carousel-dot { width: 9px; height: 9px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.7); cursor: pointer; }
.carousel-dot.is-active { width: 26px; 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)); }
.card { height: 100%; padding: clamp(22px, 3vw, 32px); border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); box-shadow: 0 12px 34px rgba(17,112,171,.07); }
.card:hover { box-shadow: var(--shadow); }
.category-card { display: flex; flex-direction: column; }
.category-card p { flex: 1; color: var(--muted); }
.media-card { overflow: hidden; padding: 0; }
.media-card img { width: 100%; height: clamp(210px, 25vw, 330px); object-fit: contain; background: #edf9ff; }
.media-card .card-body { padding: clamp(22px, 3vw, 32px); }
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(26px, 5vw, 72px); align-items: center; }
.split.reverse .split-media { order: 2; }
.split-media { overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-lg); background: #eaf8ff; box-shadow: var(--shadow); }
.split-media img { width: 100%; max-height: 520px; object-fit: contain; }
.bullet-list { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 11px; }
.bullet-list li { position: relative; padding-left: 28px; color: #3f5c74; }
.bullet-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--primary-deep); font-weight: 900; }
.notice-strip { padding: 26px; border: 1px solid var(--border); border-radius: var(--radius-md); background: linear-gradient(135deg,#fff,#eaf8ff); }
.review-card { position: relative; padding-top: 50px; }
.review-card::before { content: "“"; position: absolute; left: 24px; top: 10px; color: rgba(16,174,234,.28); font-size: 64px; line-height: 1; font-family: Georgia, serif; }
.review-role { display: inline-block; margin-top: 10px; color: var(--primary-deep); font-weight: 800; }
.faq-list { display: grid; gap: 14px; }
details { border: 1px solid var(--border); border-radius: 15px; background: #fff; padding: 0 20px; }
summary { cursor: pointer; list-style: none; padding: 18px 30px 18px 0; color: var(--heading); font-weight: 800; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: 14px; font-size: 24px; color: var(--primary-deep); }
details[open] summary::after { content: "−"; }
details p { padding-bottom: 18px; color: var(--muted); }
.page-banner { padding: clamp(66px, 9vw, 120px) 0; background: radial-gradient(circle at 15% 10%, rgba(53,215,255,.22), transparent 28%), linear-gradient(180deg,#fff,#e9f8ff); }
.page-banner .container { max-width: 1000px; text-align: center; }
.content-flow { display: grid; gap: 22px; }
.content-flow .card p:last-child { margin-bottom: 0; }
.image-gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; }
.image-tile { overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-md); background: #eaf8ff; box-shadow: 0 12px 30px rgba(17,112,171,.08); }
.image-tile img { width: 100%; height: 280px; object-fit: contain; }
.kicker-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 9px; margin-top: 20px; }
.kicker-row span { padding: 7px 12px; border: 1px solid var(--border); border-radius: 999px; background: #fff; color: var(--primary-deep); font-size: 13px; font-weight: 800; }
.site-footer { margin-top: 30px; color: #EAF8FF; background: var(--footer); }
.footer-inner { width: var(--container); margin: 0 auto; padding: 54px 0 38px; display: grid; grid-template-columns: 1.2fr .8fr 1fr; gap: 38px; }
.footer-brand img { width: 128px; margin-bottom: 16px; filter: brightness(0) invert(1); }
.footer-brand p, .footer-notice p { color: rgba(234,248,255,.78); }
.footer-links { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px 18px; align-content: start; }
.footer-links a:hover { color: #7be4ff; }
.footer-notice strong { display: block; margin-bottom: 10px; color: #fff; font-size: 18px; }
.footer-bottom { padding: 17px 16px; border-top: 1px solid rgba(255,255,255,.12); text-align: center; color: rgba(234,248,255,.65); }
@media (max-width: 1179px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: inline-block; }
    .header-inner { min-height: 70px; }
    .header-actions { margin-left: auto; }
}
@media (max-width: 900px) {
    .grid-4 { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .grid-3 { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .split, .split.reverse { grid-template-columns: 1fr; }
    .split.reverse .split-media { order: 0; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
    .footer-notice { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
    :root { --container: min(100% - 22px, 1360px); }
    .brand-logo { width: 104px; }
    .main-btn { min-height: 40px; padding: 0 17px; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .carousel-wrap { margin-top: 14px; }
    .carousel-arrow { width: 38px; height: 38px; }
    .carousel-arrow.prev { left: 9px; }
    .carousel-arrow.next { right: 9px; }
    .footer-inner { grid-template-columns: 1fr; gap: 26px; }
    .footer-notice { grid-column: auto; }
    .mobile-nav { grid-template-columns: 1fr 1fr; }
    .image-tile img { height: 220px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}