:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-blue: #EAF7FF;
    --surface-soft: #F2FAFF;
    --primary: #1CA8F6;
    --bright: #38C7FF;
    --deep: #0877C9;
    --cyan: #7FE4FF;
    --ink: #223044;
    --ink-strong: #1D2A3A;
    --muted: #5F7082;
    --soft-text: #7A8A9A;
    --footer: #082A46;
    --line: rgba(28, 168, 246, .14);
    --shadow: 0 16px 40px rgba(8, 119, 201, .09);
    --radius: 22px;
    --header-height: 126px;
}

* { 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-height);
}
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-inline: auto; }

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 100;
    background: rgba(255, 255, 255, .94);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 8px 24px rgba(8, 119, 201, .08);
}
.header-main { height: 76px; display: flex; align-items: center; gap: 30px; }
.brand-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand-logo img { width: 150px; height: 48px; object-fit: contain; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 8px; margin-inline: auto; min-width: 0; }
.nav-core a { color: var(--ink-strong); position: relative; font-weight: 700; padding: 12px 15px; border-radius: 999px; white-space: nowrap; }
.nav-core a:hover, .nav-core a.active { color: var(--primary); background: rgba(28, 168, 246, .07); }
.nav-core a.active::after { content: ""; position: absolute; left: 50%; bottom: 3px; width: 28px; height: 3px; border-radius: 999px; background: var(--primary); transform: translateX(-50%); }
.main-btn { display: inline-flex; justify-content: center; align-items: center; min-height: 42px; padding: 9px 24px; border-radius: 999px; background: linear-gradient(135deg, var(--bright) 0%, var(--primary) 48%, var(--deep) 100%); color: #fff; font-weight: 800; box-shadow: 0 12px 26px rgba(8, 119, 201, .18); transition: transform .2s ease, box-shadow .2s ease; white-space: nowrap; }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 15px 30px rgba(8, 119, 201, .26); }
.header-register { margin-left: auto; }
.channel-bar { 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; white-space: nowrap; scrollbar-width: thin; }
.channel-inner { height: 50px; display: flex; align-items: center; gap: 7px; }
.channel-bar a { color: var(--muted); padding: 6px 12px; border-radius: 999px; font-size: 14px; }
.channel-bar a:hover, .channel-bar a.active { color: var(--deep); background: rgba(28, 168, 246, .10); }
.mobile-head { display: none; }

.site-main { min-height: 60vh; }
.section { padding: 72px 0; }
.section.compact { padding: 48px 0; }
.section.alt { background: linear-gradient(180deg, rgba(234, 247, 255, .55), rgba(244, 251, 255, .72)); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.section-head > div { max-width: 760px; }
.section-kicker { display: inline-block; color: var(--primary); font-size: 13px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 7px; }
h1, h2, h3, .section-title { color: var(--deep); line-height: 1.25; margin-top: 0; }
h1 { font-size: clamp(32px, 5vw, 56px); margin-bottom: 18px; }
h2 { font-size: clamp(25px, 3.2vw, 38px); margin-bottom: 12px; }
h3 { font-size: 20px; margin-bottom: 9px; }
p { margin-top: 0; }
.lead { color: var(--muted); font-size: 18px; max-width: 820px; }
.text-link { display: inline-flex; align-items: center; gap: 6px; color: var(--deep); font-weight: 800; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }

.banner-slider { width: min(1180px, calc(100% - 40px)); height: clamp(280px, 31vw, 380px); margin: 26px auto 34px; border-radius: 24px; 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; width: 46px; height: 46px; border: none; border-radius: 999px; background: rgba(255, 255, 255, .90); color: var(--primary); box-shadow: 0 8px 20px rgba(8, 119, 201, .16); cursor: pointer; font-size: 25px; touch-action: manipulation; }
.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; padding: 0; border-radius: 50%; border: none; background: rgba(28, 168, 246, .28); cursor: pointer; touch-action: manipulation; }
.slider-dots button.active { background: var(--primary); box-shadow: 0 0 0 5px rgba(255, 255, 255, .65); }

.hero-section { padding: 50px 0 44px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr); align-items: center; gap: 48px; }
.hero-copy .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 24px; }
.hero-visual, .image-frame { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; overflow: hidden; }
.hero-visual img { width: 100%; height: 300px; object-fit: contain; }
.image-frame img { width: 100%; height: 250px; object-fit: contain; }

.card, .zone-card, .info-card, .review-card, .faq-item, .panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.card, .zone-card, .info-card, .review-card, .panel { padding: 24px; }
.card p, .zone-card p, .info-card p, .review-card p, .panel p { color: var(--muted); }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card-grid .wide { grid-column: span 2; }
.zone-card img { width: 100%; height: 165px; object-fit: contain; margin-bottom: 18px; border-radius: 16px; background: var(--surface-soft); }
.info-card .num { display: inline-grid; place-items: center; width: 42px; height: 42px; border-radius: 14px; background: var(--surface-blue); color: var(--primary); font-weight: 900; margin-bottom: 18px; }
.pill-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.pill-item { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 17px 18px; box-shadow: 0 10px 24px rgba(8, 119, 201, .06); }
.pill-item strong { display: block; color: var(--deep); margin-bottom: 4px; }
.pill-item span { display: block; color: var(--muted); font-size: 14px; min-height: 48px; }
.pill-item a { color: var(--primary); font-weight: 800; font-size: 14px; }
.platform-strip { display: grid; grid-template-columns: auto 1fr; gap: 28px; align-items: center; padding: 30px 34px; border-radius: var(--radius); background: linear-gradient(135deg, #fff, #EAF7FF); border: 1px solid var(--line); box-shadow: var(--shadow); }
.platform-strip .badge { width: 78px; height: 78px; border-radius: 24px; display: grid; place-items: center; background: linear-gradient(135deg, rgba(56, 199, 255, .18), rgba(8, 119, 201, .12)); color: var(--deep); font-weight: 900; }
.feature-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.split-content { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.split-content .panel { min-height: 100%; }
.clean-list { margin: 16px 0 18px; padding: 0; list-style: none; }
.clean-list li { position: relative; padding-left: 20px; margin: 8px 0; color: var(--muted); }
.clean-list li::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); position: absolute; left: 0; top: .72em; }
.review-card strong { color: var(--deep); display: block; margin-bottom: 8px; }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 0; overflow: hidden; }
.faq-item details { padding: 20px 22px; }
.faq-item summary { cursor: pointer; color: var(--deep); font-weight: 800; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; float: right; color: var(--primary); font-size: 22px; line-height: 1; }
.faq-item details[open] summary::after { content: "−"; }
.faq-item p { margin: 14px 0 0; color: var(--muted); }

.inner-hero { padding: 62px 0 44px; }
.inner-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, 450px); gap: 48px; align-items: center; }
.inner-hero.no-image .inner-hero-grid { grid-template-columns: 1fr; }
.inner-meta { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; }
.inner-meta span { padding: 7px 12px; border-radius: 999px; background: var(--surface-blue); color: var(--deep); font-size: 13px; font-weight: 700; }
.topic-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.topic-card { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 24px; box-shadow: var(--shadow); }
.topic-card p { color: var(--muted); }
.notice-box { padding: 24px 26px; border-left: 5px solid var(--primary); border-radius: 18px; background: linear-gradient(135deg, #fff, #EDF8FF); box-shadow: var(--shadow); }
.notice-box p:last-child { margin-bottom: 0; }

.compliance-wrap { padding: 30px 0 70px; }
.compliance-card { display: grid; grid-template-columns: minmax(250px, .6fr) minmax(0, 1.4fr); align-items: center; gap: 32px; padding: 28px 32px; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(135deg, #fff, #EAF7FF); box-shadow: var(--shadow); }
.compliance-card h2 { font-size: 26px; margin-bottom: 0; }
.compliance-card p { color: var(--muted); margin-bottom: 0; }
.site-footer { background: var(--footer); color: #EAF8FF; padding: 58px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 40px; }
.footer-brand img { width: 155px; height: 50px; object-fit: contain; filter: brightness(0) invert(1); margin-bottom: 18px; }
.footer-grid h3 { color: #fff; font-size: 17px; }
.footer-grid a { display: block; color: #CDEFFF; margin: 8px 0; }
.footer-grid a:hover { color: #fff; }
.footer-brand p, .footer-bottom p { color: #B9D9EC; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .12); margin-top: 38px; padding-top: 20px; }
.footer-bottom p { margin: 0; font-size: 14px; }

.floating-service { position: fixed; right: 18px; top: 42%; z-index: 60; display: grid; gap: 8px; }
.floating-service a, .floating-service button { min-width: 88px; padding: 10px 12px; border-radius: 14px; background: #fff; color: var(--deep); border: 1px solid var(--line); box-shadow: 0 14px 30px rgba(8, 119, 201, .10); text-align: center; cursor: pointer; font-size: 14px; }
.floating-service a.register-link { background: linear-gradient(135deg, var(--bright), var(--primary), var(--deep)); color: #fff; border: none; font-weight: 800; }
.mobile-drawer, .drawer-overlay, .mobile-bottom-nav { display: none; }

@media (max-width: 1100px) {
    .floating-service { display: none; }
    .card-grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: 1.4fr repeat(3, 1fr); gap: 24px; }
}

@media (max-width: 860px) {
    :root { --header-height: 76px; }
    body { padding-top: var(--header-height); padding-bottom: 76px; }
    .container { width: min(100% - 28px, 1180px); }
    .header-main { height: 76px; gap: 12px; }
    .desktop-logo, .nav-core, .channel-bar { display: none; }
    .mobile-head { display: grid; grid-template-columns: 44px 1fr; align-items: center; min-width: 0; flex: 1; }
    .mobile-menu-btn { width: 42px; height: 42px; padding: 10px; border: 0; border-radius: 14px; background: var(--surface-blue); display: grid; align-content: center; gap: 5px; cursor: pointer; z-index: 2; touch-action: manipulation; }
    .mobile-menu-btn span { height: 2px; width: 100%; border-radius: 999px; background: var(--deep); }
    .mobile-logo { justify-self: center; transform: translateX(-22px); }
    .mobile-logo img { width: 126px; height: 42px; }
    .header-register { padding: 8px 18px; min-height: 40px; flex: 0 0 auto; }
    .hero-grid, .inner-hero-grid { grid-template-columns: 1fr; gap: 26px; }
    .hero-copy { order: 1; }
    .hero-visual { order: 2; }
    .card-grid, .topic-grid, .feature-row, .pill-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .compliance-card { grid-template-columns: 1fr; gap: 14px; }
    .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

    .drawer-overlay { display: block; position: fixed; inset: 0; z-index: 140; background: rgba(6, 42, 70, .45); opacity: 0; transition: opacity .25s ease; }
    .drawer-overlay[hidden] { display: none; }
    .drawer-overlay.show { opacity: 1; }
    .mobile-drawer { display: flex; flex-direction: column; position: fixed; inset: 0 auto 0 0; width: min(84vw, 320px); z-index: 150; background: #fff; box-shadow: 20px 0 60px rgba(8, 42, 70, .25); transform: translateX(-105%); transition: transform .28s ease; }
    .mobile-drawer.open { transform: translateX(0); }
    .drawer-head { height: 76px; display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--line); background: #fff; }
    .drawer-logo img { width: 132px; height: 44px; object-fit: contain; }
    .drawer-close { width: 40px; height: 40px; border: none; border-radius: 14px; background: var(--surface-blue); color: var(--deep); font-size: 28px; line-height: 1; cursor: pointer; touch-action: manipulation; }
    .drawer-nav { overflow-y: auto; padding: 14px 14px 28px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
    .drawer-nav a { padding: 11px 10px; border-radius: 12px; color: var(--muted); background: var(--surface-soft); font-size: 14px; text-align: center; }
    .drawer-nav a.active { color: var(--deep); background: var(--surface-blue); font-weight: 800; }
    .mobile-bottom-nav { display: grid; grid-template-columns: repeat(4, 1fr); position: fixed; inset: auto 0 0; z-index: 120; min-height: 64px; padding-bottom: env(safe-area-inset-bottom); background: rgba(255, 255, 255, .96); backdrop-filter: blur(12px); border-top: 1px solid var(--line); box-shadow: 0 -10px 28px rgba(8, 119, 201, .10); }
    .mobile-bottom-nav a { display: grid; place-items: center; color: var(--muted); font-size: 14px; min-height: 64px; touch-action: manipulation; }
    .mobile-bottom-nav a.active { color: var(--deep); font-weight: 900; }
}

@media (max-width: 620px) {
    .section { padding: 54px 0; }
    .section.compact { padding: 38px 0; }
    .section-head { align-items: flex-start; flex-direction: column; gap: 8px; margin-bottom: 22px; }
    .banner-slider { width: calc(100% - 28px); height: clamp(160px, 48vw, 220px); margin: 18px auto 22px; border-radius: 18px; }
    .slider-arrow { width: 38px; height: 38px; font-size: 20px; }
    .slider-arrow.prev { left: 8px; }
    .slider-arrow.next { right: 8px; }
    .hero-section, .inner-hero { padding: 38px 0 30px; }
    .hero-visual img { height: 220px; }
    .image-frame img { height: 210px; }
    .card-grid, .card-grid.two, .card-grid.four, .topic-grid, .feature-row, .pill-grid, .split-content { grid-template-columns: 1fr; }
    .card-grid .wide { grid-column: auto; }
    .platform-strip { grid-template-columns: 1fr; padding: 24px; }
    .platform-strip .badge { width: 64px; height: 64px; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-grid > div:not(.footer-brand) { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 18px; }
    .footer-grid h3 { grid-column: 1 / -1; }
    .compliance-wrap { padding-bottom: 50px; }
    .compliance-card { padding: 24px; }
    .mobile-logo { transform: translateX(-15px); }
    .header-register { padding-inline: 15px; }
}