:root {
    --bg: #F4FBFF; --white: #FFFFFF; --soft: #EAF7FF; --soft2: #F2FAFF;
    --blue: #1CA8F6; --light-blue: #38C7FF; --deep-blue: #0877C9; --cyan: #7FE4FF;
    --ink: #223044; --muted: #5F7082; --subtle: #7A8A9A; --footer: #082A46;
    --shadow: 0 16px 40px rgba(8,119,201,.08); --radius: 22px; --header-h: 134px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; line-height: 1.75; overflow-x: hidden; padding-top: var(--header-h); }
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.narrow { width: min(880px, calc(100% - 40px)); }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 999; background: #fff; color: var(--deep-blue); padding: 10px 14px; border-radius: 10px; }
.skip-link:focus { top: 12px; }
.site-header { position: fixed; inset: 0 0 auto 0; z-index: 100; background: rgba(255,255,255,.94); backdrop-filter: blur(12px); box-shadow: 0 8px 24px rgba(8,119,201,.08); }
.top-nav-wrap { background: rgba(255,255,255,.94); }
.top-nav { height: 76px; display: grid; grid-template-columns: 190px 1fr auto; align-items: center; gap: 28px; }
.brand-logo img { width: 158px; height: 48px; object-fit: contain; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: clamp(22px,3.5vw,44px); min-width: 0; }
.nav-core a { color: #1D2A3A; position: relative; font-weight: 700; white-space: nowrap; padding: 10px 6px; }
.nav-core a:hover, .nav-core a.active { color: var(--blue); }
.nav-core a.active::after { content: ""; position: absolute; left: 50%; bottom: -10px; width: 28px; height: 3px; border-radius: 999px; background: var(--blue); transform: translateX(-50%); }
.main-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 0 24px; background: linear-gradient(135deg,#38C7FF 0%,#1CA8F6 48%,#0877C9 100%); color: #fff; border-radius: 999px; box-shadow: 0 12px 26px rgba(8,119,201,.18); font-weight: 800; transition: .2s ease; white-space: nowrap; }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 16px 30px rgba(8,119,201,.25); }
.channel-bar { height: 58px; background: rgba(234,247,255,.88); border-top: 1px solid rgba(28,168,246,.10); border-bottom: 1px solid rgba(28,168,246,.10); overflow-x: auto; overflow-y: hidden; white-space: nowrap; scrollbar-width: thin; }
.channel-scroll { height: 100%; display: flex; align-items: center; gap: 8px; }
.channel-bar a { display: inline-flex; padding: 7px 13px; color: var(--muted); border-radius: 999px; font-size: 14px; }
.channel-bar a:hover, .channel-bar a.active { color: var(--deep-blue); background: rgba(28,168,246,.10); }
.menu-toggle { display: none; width: 42px; height: 42px; border: 0; background: transparent; padding: 9px; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; background: var(--deep-blue); margin: 5px 0; border-radius: 5px; }
.mobile-drawer { position: fixed; inset: 0 auto 0 0; width: 84vw; max-width: 320px; z-index: 220; background: #fff; transform: translateX(-105%); transition: transform .28s ease; overflow-y: auto; box-shadow: 18px 0 50px rgba(8,42,70,.18); }
.mobile-drawer.open { transform: translateX(0); }
.drawer-overlay { position: fixed; inset: 0; z-index: 210; background: rgba(8,42,70,.42); opacity: 0; visibility: hidden; transition: .25s; }
.drawer-overlay.show { opacity: 1; visibility: visible; }
.drawer-head { position: sticky; top: 0; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px; background: #fff; border-bottom: 1px solid rgba(28,168,246,.12); z-index: 2; }
.drawer-logo img { width: 138px; height: 44px; object-fit: contain; }
.drawer-close { width: 40px; height: 40px; border-radius: 50%; border: 1px solid rgba(28,168,246,.18); background: var(--soft); color: var(--deep-blue); font-size: 26px; line-height: 1; }
.drawer-nav { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 8px; padding: 16px; }
.drawer-nav a { padding: 11px 12px; border-radius: 12px; color: var(--ink); background: var(--soft2); font-size: 14px; }
.drawer-nav a.active { background: var(--blue); color: #fff; }
.floating-service { position: fixed; right: 18px; top: 42%; z-index: 60; display: grid; gap: 8px; width: 102px; }
.floating-service a, .floating-service button { border: 1px solid rgba(28,168,246,.14); background: #fff; color: var(--deep-blue); box-shadow: 0 14px 30px rgba(8,119,201,.10); border-radius: 14px; padding: 10px 8px; text-align: center; font-size: 13px; cursor: pointer; }
.floating-service .register-link { background: linear-gradient(135deg,#38C7FF,#1CA8F6 48%,#0877C9); color: #fff; font-weight: 800; }
.section-pad { padding: 72px 0; }
.soft-section { background: linear-gradient(180deg,rgba(234,247,255,.72),rgba(244,251,255,.28)); }
.section-heading { max-width: 760px; margin-bottom: 30px; }
.section-heading.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-heading h2, .hero-copy h1, .final-cta h2 { color: var(--deep-blue); margin: 8px 0 12px; line-height: 1.28; }
h1 { font-size: clamp(34px,5vw,58px); }
h2 { font-size: clamp(26px,3.2vw,38px); }
h3 { color: var(--deep-blue); margin: 8px 0 10px; font-size: 20px; }
p { margin: 0 0 14px; }
.section-kicker { display: inline-flex; color: var(--blue); font-weight: 800; letter-spacing: .08em; font-size: 13px; }
.text-link { color: var(--blue); font-weight: 800; }
.text-link:hover { color: var(--deep-blue); }
.banner-slider { width: min(1180px, calc(100% - 40px)); height: clamp(280px,31vw,380px); margin: 24px auto 34px; border-radius: 22px; background: #fff; box-shadow: 0 16px 40px rgba(8,119,201,.10); overflow: hidden; position: relative; z-index: 1; }
.banner-slider .slide { display: none; width: 100%; height: 100%; }
.banner-slider .slide.active { display: block; }
.banner-slider img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.slider-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 3; border: none; width: 44px; height: 44px; border-radius: 999px; background: rgba(255,255,255,.90); color: var(--blue); box-shadow: 0 8px 20px rgba(8,119,201,.14); font-size: 25px; cursor: pointer; }
.slider-arrow.prev { left: 16px; } .slider-arrow.next { right: 16px; }
.slider-dots { position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%); display: flex; gap: 8px; z-index: 3; }
.slider-dots button { width: 10px; height: 10px; border-radius: 50%; border: none; background: rgba(28,168,246,.28); padding: 0; cursor: pointer; }
.slider-dots button.active { background: var(--blue); }
.brand-intro, .split-feature, .hero-grid, .final-cta-box { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: clamp(30px,5vw,70px); }
.brand-intro img, .split-feature img, .hero-visual img { width: 100%; max-height: 300px; object-fit: contain; border-radius: var(--radius); background: #fff; padding: 16px; box-shadow: var(--shadow); }
.quick-pills { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; }
.quick-pill { background: #fff; border: 1px solid rgba(28,168,246,.12); border-radius: 18px; padding: 18px; box-shadow: var(--shadow); }
.quick-pill strong { display: block; color: var(--deep-blue); margin-bottom: 4px; }
.quick-pill p { color: var(--muted); font-size: 14px; min-height: 50px; }
.platform-strip { padding: 26px 30px; border-radius: var(--radius); background: linear-gradient(135deg,#fff,#eaf7ff); border: 1px solid rgba(28,168,246,.12); box-shadow: var(--shadow); }
.content-grid, .review-grid, .zone-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
.content-grid.four { grid-template-columns: repeat(4,minmax(0,1fr)); }
.info-card, .review-card, .zone-card, .card { background: #fff; border: 1px solid rgba(28,168,246,.12); box-shadow: var(--shadow); border-radius: 20px; padding: 24px; }
.info-card .num { display: inline-flex; color: var(--blue); font-weight: 900; font-size: 13px; }
.zone-card { overflow: hidden; padding: 0; }
.zone-card img { width: 100%; height: 175px; object-fit: contain; background: #fff; padding: 12px; }
.zone-card .zone-copy { padding: 22px; }
.split-feature { align-items: stretch; }
.split-card { background: #fff; border-radius: var(--radius); padding: 28px; border: 1px solid rgba(28,168,246,.12); box-shadow: var(--shadow); }
.split-card img { width: 100%; height: 220px; object-fit: contain; background: var(--soft2); border-radius: 16px; margin-bottom: 18px; }
.bullet-inline { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0; padding: 0; list-style: none; }
.bullet-inline li { background: var(--soft); color: var(--deep-blue); border-radius: 999px; padding: 7px 12px; font-size: 13px; }
.notice-wall { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.review-card { margin: 0; }
.review-card p { color: #3b4b5e; }
.faq-list { display: grid; gap: 12px; }
.faq-list details { background: #fff; border-radius: 16px; border: 1px solid rgba(28,168,246,.12); box-shadow: 0 10px 24px rgba(8,119,201,.06); padding: 0 20px; }
.faq-list summary { cursor: pointer; color: var(--deep-blue); font-weight: 800; padding: 18px 0; }
.faq-list details p { color: var(--muted); padding: 0 0 18px; }
.inner-hero { padding-top: 88px; background: radial-gradient(circle at 85% 20%,rgba(127,228,255,.45),transparent 30%),linear-gradient(180deg,#f4fbff,#eef9ff); }
.hero-grid.text-only { grid-template-columns: 1fr; }
.hero-copy p { font-size: 18px; color: var(--muted); max-width: 760px; }
.prose-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.prose-grid.single { grid-template-columns: 1fr; }
.prose-grid p { background: #fff; border: 1px solid rgba(28,168,246,.10); border-radius: 18px; padding: 22px; box-shadow: 0 12px 30px rgba(8,119,201,.06); }
.feature-list { list-style: none; padding: 0; margin: 24px 0 0; display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; }
.feature-list li { position: relative; background: #fff; border-radius: 14px; padding: 14px 16px 14px 42px; border: 1px solid rgba(28,168,246,.12); }
.feature-list li::before { content: "✓"; position: absolute; left: 15px; color: var(--blue); font-weight: 900; }
.final-cta-box { background: linear-gradient(135deg,#fff,#eaf7ff); border: 1px solid rgba(28,168,246,.14); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); }
.site-footer { background: var(--footer); color: #EAF8FF; padding: 58px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3,1fr); gap: 34px; }
.footer-brand img { width: 150px; height: 48px; object-fit: contain; filter: brightness(1.15); margin-bottom: 14px; }
.footer-grid h2 { color: #fff; font-size: 16px; margin: 0 0 14px; }
.footer-grid a { display: block; color: #cfeeff; margin: 8px 0; font-size: 14px; }
.footer-grid p { color: #c7dfef; font-size: 14px; }
.compliance-note { margin-top: 34px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.12); }
.compliance-note p { color: #bdd8e8; font-size: 13px; }
.footer-bottom { margin-top: 16px; color: #a9c7d8; font-size: 13px; }
.mobile-bottom-nav { display: none; }

@media (max-width: 1220px) {
    .floating-service { display: none; }
}
@media (max-width: 900px) {
    :root { --header-h: 74px; }
    body { padding-top: var(--header-h); }
    .container, .narrow { width: min(100% - 28px, 760px); }
    .top-nav { height: 74px; grid-template-columns: 44px 1fr auto; gap: 8px; }
    .menu-toggle { display: block; }
    .brand-logo { justify-self: center; }
    .brand-logo img { width: 132px; height: 44px; }
    .nav-core, .channel-bar { display: none; }
    .header-register { padding: 0 16px; min-height: 40px; }
    .section-pad { padding: 54px 0; }
    .banner-slider { width: calc(100% - 28px); height: clamp(220px,41vw,300px); margin-top: 16px; }
    .brand-intro, .split-feature, .hero-grid, .final-cta-box { grid-template-columns: 1fr; }
    .quick-pills { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .content-grid, .review-grid, .zone-grid, .content-grid.four { 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 / span 2; }
}
@media (max-width: 640px) {
    body { padding-bottom: 74px; }
    h1 { font-size: 34px; }
    .top-nav { width: calc(100% - 18px); }
    .brand-logo img { width: 116px; }
    .main-btn.header-register { padding: 0 13px; font-size: 14px; }
    .section-pad { padding: 44px 0; }
    .banner-slider { height: clamp(160px,52vw,220px); border-radius: 16px; }
    .slider-arrow { width: 38px; height: 38px; font-size: 21px; }
    .quick-pills, .content-grid, .review-grid, .zone-grid, .content-grid.four, .notice-wall, .prose-grid, .feature-list { grid-template-columns: 1fr; }
    .quick-pill p { min-height: auto; }
    .zone-card img { height: 155px; }
    .split-card img { height: 190px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-grid > div:last-child { grid-column: auto; }
    .mobile-bottom-nav { display: grid; position: fixed; left: 10px; right: 10px; bottom: max(8px, env(safe-area-inset-bottom)); z-index: 90; grid-template-columns: repeat(4,1fr); background: rgba(255,255,255,.96); backdrop-filter: blur(12px); border: 1px solid rgba(28,168,246,.15); box-shadow: 0 14px 38px rgba(8,42,70,.16); border-radius: 18px; overflow: hidden; }
    .mobile-bottom-nav a { padding: 12px 4px; text-align: center; color: var(--deep-blue); font-size: 13px; font-weight: 800; }
    .inner-hero { padding-top: 52px; }
    .hero-copy p { font-size: 16px; }
}