:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-soft: #E8F7FF;
    --title: #11AEEA;
    --primary: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(17,174,234,.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --shadow: 0 18px 50px rgba(18,116,176,.12);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --header-h: 76px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 0;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
    line-height: 1.75;
    padding-top: var(--header-h);
}
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: -60px; z-index: 2000; background: #fff; color: var(--deep); padding: 10px 16px; border-radius: 10px; box-shadow: var(--shadow); }
.skip-link:focus { top: 12px; }
.site-header { position: fixed; inset: 0 0 auto 0; height: var(--header-h); z-index: 1000; background: rgba(255,255,255,.96); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); }
.header-inner { width: min(100% - 32px, 1360px); height: 100%; margin: 0 auto; display: flex; align-items: center; gap: clamp(14px, 2vw, 30px); }
.brand-logo { flex: 0 0 auto; width: clamp(110px, 10vw, 148px); }
.brand-logo img { width: 100%; height: 46px; object-fit: contain; }
.desktop-nav { flex: 1; min-width: 0; display: flex; justify-content: center; align-items: center; gap: clamp(8px, 1vw, 18px); }
.desktop-nav a { white-space: nowrap; font-size: clamp(13px, .95vw, 15px); color: var(--text); padding: 9px 2px; position: relative; }
.desktop-nav a::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: 1px; height: 2px; border-radius: 10px; background: var(--title); transition: .25s ease; }
.desktop-nav a:hover, .desktop-nav a.active { color: var(--primary); }
.desktop-nav a:hover::after, .desktop-nav a.active::after { left: 4px; right: 4px; }
.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: 44px; padding: 0 22px; border-radius: 999px; font-weight: 700; white-space: nowrap; 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,.24); }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(22,136,216,.3); }
.secondary-btn { color: var(--deep); border: 1px solid var(--border); background: #fff; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--border); border-radius: 13px; background: #fff; padding: 11px; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; background: var(--deep); margin: 5px 0; border-radius: 5px; }
.mobile-drawer { position: fixed; z-index: 1200; top: 0; right: 0; width: min(86vw, 370px); height: 100dvh; padding: 20px; background: #fff; transform: translateX(105%); transition: transform .28s ease; box-shadow: -18px 0 50px rgba(7,58,104,.18); overflow-y: auto; }
.mobile-drawer.open { transform: translateX(0); }
.drawer-backdrop { position: fixed; z-index: 1100; inset: 0; background: rgba(7,58,104,.36); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.drawer-logo { width: 125px; }
.drawer-logo img { height: 44px; width: 100%; object-fit: contain; }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 12px; color: var(--deep); background: var(--surface-soft); font-size: 28px; cursor: pointer; }
.drawer-nav { display: grid; gap: 5px; padding: 18px 0; }
.drawer-nav a { padding: 11px 14px; border-radius: 12px; color: var(--text); }
.drawer-nav a:hover, .drawer-nav a.active { background: var(--surface-soft); color: var(--primary); }
.drawer-register { width: 100%; }
.container { width: min(100% - 32px, 1200px); margin: 0 auto; }
.narrow { width: min(100% - 32px, 900px); margin: 0 auto; }
.section { padding: clamp(54px, 7vw, 96px) 0; }
.section.soft { background: var(--surface-soft); }
.section.white { background: #fff; }
.section-head { max-width: 760px; margin-bottom: 30px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); font-size: 14px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--title); border-radius: 20px; }
h1, h2, h3 { color: var(--deep); line-height: 1.28; margin: 0 0 16px; }
h1 { font-size: clamp(34px, 5vw, 60px); }
h2 { font-size: clamp(27px, 3.3vw, 42px); }
h3 { font-size: clamp(20px, 2vw, 26px); }
p { margin: 0 0 14px; }
.lead { color: var(--muted); font-size: clamp(17px, 1.6vw, 20px); }
.page-hero { padding: clamp(72px, 9vw, 120px) 0 clamp(48px, 6vw, 78px); background: radial-gradient(circle at 80% 20%, rgba(53,215,255,.20), transparent 30%), linear-gradient(135deg, #fff 0%, #E8F7FF 100%); border-bottom: 1px solid var(--border); }
.page-hero .hero-wrap { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr); gap: clamp(28px, 5vw, 70px); align-items: center; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.hero-image, .content-image { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 14px; box-shadow: var(--shadow); }
.hero-image img, .content-image img { width: 100%; height: auto; max-height: 430px; object-fit: contain; border-radius: calc(var(--radius-xl) - 10px); background: #fff; }
.slider-wrap { padding: 24px 0 0; }
.slider { position: relative; overflow: hidden; width: min(100% - 32px, 1360px); margin: 0 auto; border-radius: var(--radius-xl); background: var(--surface-soft); box-shadow: var(--shadow); border: 1px solid var(--border); }
.slides { display: flex; transition: transform .55s cubic-bezier(.22,.61,.36,1); }
.slide { min-width: 100%; aspect-ratio: 16 / 6.6; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg,#E8F7FF,#fff); }
.slide img { width: 100%; height: 100%; object-fit: contain; }
.slider-arrow { position: absolute; top: 50%; transform: translateY(-50%); width: 44px; height: 44px; border: 1px solid rgba(255,255,255,.65); border-radius: 50%; color: #fff; background: rgba(7,58,104,.45); backdrop-filter: blur(8px); cursor: pointer; font-size: 25px; z-index: 3; }
.slider-arrow:hover { background: rgba(7,58,104,.7); }
.slider-arrow.prev { left: 18px; }
.slider-arrow.next { right: 18px; }
.slider-dots { position: absolute; left: 0; right: 0; bottom: 16px; display: flex; justify-content: center; gap: 9px; z-index: 3; }
.slider-dot { width: 9px; height: 9px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.62); cursor: pointer; box-shadow: 0 0 0 1px rgba(7,58,104,.1); }
.slider-dot.active { width: 24px; border-radius: 10px; background: #fff; }
.grid-2, .grid-3, .grid-4, .grid-5 { 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)); }
.grid-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: clamp(22px, 3vw, 30px); box-shadow: 0 12px 35px rgba(18,116,176,.08); }
.card:hover { border-color: rgba(17,174,234,.34); }
.card p:last-child { margin-bottom: 0; }
.card-link { display: inline-flex; margin-top: 16px; color: var(--primary); font-weight: 700; }
.card-link::after { content: "→"; margin-left: 6px; transition: transform .2s; }
.card-link:hover::after { transform: translateX(4px); }
.icon-badge { width: 44px; height: 44px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 18px; color: var(--deep); background: linear-gradient(135deg,#E8F7FF,#D9F4FF); font-weight: 800; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .95fr); gap: clamp(30px, 6vw, 72px); align-items: center; }
.split.reverse > :first-child { order: 2; }
.split.reverse > :last-child { order: 1; }
.feature-list { display: grid; gap: 12px; margin-top: 20px; }
.feature-item { position: relative; padding: 16px 16px 16px 46px; background: #fff; border: 1px solid var(--border); border-radius: 15px; }
.feature-item::before { content: "✓"; position: absolute; left: 16px; top: 16px; width: 22px; height: 22px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: linear-gradient(135deg,#35D7FF,#1688D8); font-size: 13px; }
.notice { border-left: 4px solid var(--title); background: #fff; padding: 20px 22px; border-radius: 0 var(--radius-md) var(--radius-md) 0; box-shadow: 0 10px 24px rgba(18,116,176,.07); }
.review { position: relative; padding-top: 50px; }
.review::before { content: "“"; position: absolute; top: 12px; left: 24px; color: rgba(17,174,234,.28); font-size: 62px; line-height: 1; font-family: Georgia, serif; }
.review .role { color: var(--primary); font-weight: 700; margin-top: 16px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0 0; }
.tag { padding: 7px 12px; border-radius: 999px; background: var(--surface-soft); color: var(--deep); font-size: 14px; border: 1px solid var(--border); }
.timeline { display: grid; gap: 18px; counter-reset: step; }
.timeline-item { counter-increment: step; display: grid; grid-template-columns: 54px 1fr; gap: 16px; align-items: start; }
.timeline-item::before { content: counter(step); width: 44px; height: 44px; display: grid; place-items: center; color: #fff; font-weight: 800; border-radius: 14px; background: linear-gradient(135deg,#35D7FF,#1688D8); box-shadow: 0 10px 24px rgba(22,136,216,.18); }
.faq-list { display: grid; gap: 14px; }
details.faq-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); padding: 0 20px; }
details.faq-item summary { list-style: none; cursor: pointer; padding: 18px 38px 18px 0; font-weight: 700; color: var(--deep); position: relative; }
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item summary::after { content: "+"; position: absolute; right: 0; top: 14px; width: 28px; height: 28px; display: grid; place-items: center; border-radius: 9px; color: var(--primary); background: var(--surface-soft); }
details[open].faq-item summary::after { content: "−"; }
details.faq-item p { padding: 0 0 20px; color: var(--muted); }
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; background: #fff; min-width: 620px; }
th, td { padding: 16px 18px; text-align: left; border-bottom: 1px solid var(--border); }
th { background: var(--surface-soft); color: var(--deep); }
.cta-band { padding: clamp(28px, 5vw, 48px); border-radius: var(--radius-xl); background: linear-gradient(135deg,#0EADE8 0%,#155A9D 100%); color: #fff; display: flex; align-items: center; justify-content: space-between; gap: 24px; box-shadow: var(--shadow); }
.cta-band h2, .cta-band p { color: #fff; }
.site-footer { background: var(--footer); color: var(--footer-text); padding: 68px 0 24px; }
.footer-grid { width: min(100% - 32px, 1200px); margin: 0 auto; display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 34px; }
.footer-brand img { width: 145px; height: 48px; object-fit: contain; background: #fff; border-radius: 12px; padding: 5px 10px; margin-bottom: 18px; }
.site-footer h2 { color: #fff; font-size: 18px; margin-bottom: 16px; }
.site-footer p { color: rgba(234,248,255,.8); }
.footer-links { display: grid; gap: 10px; }
.footer-links a { color: rgba(234,248,255,.84); }
.footer-links a:hover { color: #fff; }
.footer-bottom { width: min(100% - 32px, 1200px); margin: 38px auto 0; padding-top: 22px; border-top: 1px solid rgba(234,248,255,.16); display: flex; justify-content: space-between; gap: 20px; font-size: 14px; }
.footer-bottom p { margin: 0; }
@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: block; }
    .header-inner { justify-content: space-between; }
}
@media (max-width: 960px) {
    .grid-4, .grid-5 { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .grid-3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .page-hero .hero-wrap, .split { grid-template-columns: 1fr; }
    .split.reverse > :first-child, .split.reverse > :last-child { order: initial; }
    .hero-image img, .content-image img { max-height: 360px; }
    .footer-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .slide { aspect-ratio: 16 / 8; }
}
@media (max-width: 640px) {
    :root { --header-h: 68px; }
    .header-inner { width: min(100% - 22px, 1360px); gap: 10px; }
    .brand-logo { width: 105px; }
    .brand-logo img { height: 40px; }
    .main-btn { min-height: 40px; padding: 0 17px; }
    .container, .narrow { width: min(100% - 24px, 1200px); }
    .slider { width: min(100% - 20px, 1360px); border-radius: 18px; }
    .slide { aspect-ratio: 16 / 10; }
    .slider-arrow { width: 38px; height: 38px; font-size: 20px; }
    .slider-arrow.prev { left: 10px; }
    .slider-arrow.next { right: 10px; }
    .slider-dots { bottom: 10px; }
    .grid-2, .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr; }
    .section { padding: 52px 0; }
    .card { padding: 22px; }
    .cta-band { align-items: flex-start; flex-direction: column; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
    * { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}