:root {
    --bg: #EAF2FB;
    --surface: #FFFFFF;
    --surface-soft: #F4F8FF;
    --surface-blue: #EDF5FF;
    --line: rgba(47, 168, 247, .14);
    --primary: #2FA8F7;
    --bright: #45C7FF;
    --deep: #137CD8;
    --text: #24364F;
    --muted: #5D718A;
    --footer: #102B46;
    --radius-lg: 24px;
    --radius-md: 18px;
    --shadow: 0 16px 40px rgba(19, 124, 216, .08);
    --shadow-strong: 0 20px 48px rgba(19, 124, 216, .14);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
    padding-top: 126px;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
.skip-link { position: fixed; left: 12px; top: -60px; z-index: 500; padding: 10px 16px; background: #fff; color: var(--deep); border-radius: 10px; }
.skip-link:focus { top: 12px; }
.container { width: min(1180px, calc(100% - 32px)); margin-inline: auto; }
.site-header {
    position: fixed; inset: 0 0 auto; z-index: 100;
    background: rgba(255,255,255,.94);
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 24px rgba(19,124,216,.08);
}
.header-inner { width: min(1180px, calc(100% - 32px)); min-height: 74px; margin: auto; display: grid; grid-template-columns: 190px 1fr auto; align-items: center; gap: 26px; }
.brand-logo img { width: 160px; max-height: 48px; object-fit: contain; }
.nav-core { display: flex; justify-content: center; gap: clamp(18px, 2.6vw, 34px); }
.nav-core a { color: var(--text); position: relative; font-weight: 700; padding: 23px 0 19px; white-space: nowrap; }
.nav-core a:hover, .nav-core a.active { color: var(--primary); }
.nav-core a.active::after { content: ""; position: absolute; left: 50%; bottom: 10px; width: 28px; height: 3px; border-radius: 999px; background: var(--primary); transform: translateX(-50%); }
.main-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 24px; background: linear-gradient(135deg, var(--bright) 0%, var(--primary) 48%, var(--deep) 100%); color: #fff; border-radius: 999px; box-shadow: 0 12px 26px rgba(19,124,216,.18); font-weight: 800; transition: transform .2s ease, box-shadow .2s ease; }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 16px 30px rgba(19,124,216,.24); }
.header-register { min-width: 92px; }
.menu-toggle { display: none; border: 0; background: transparent; color: var(--deep); font-size: 28px; padding: 6px; }
.channel-bar { position: fixed; z-index: 90; top: 74px; left: 0; right: 0; background: rgba(244,248,255,.94); border-top: 1px solid rgba(47,168,247,.1); border-bottom: 1px solid rgba(47,168,247,.1); overflow-x: auto; white-space: nowrap; scrollbar-width: thin; }
.channel-inner { width: min(1180px, calc(100% - 32px)); margin: auto; display: flex; gap: 8px; padding: 8px 0; }
.channel-bar a { color: var(--muted); border-radius: 999px; padding: 5px 12px; font-size: 14px; }
.channel-bar a:hover, .channel-bar a.active { color: var(--deep); background: rgba(47,168,247,.09); }
.floating-service { position: fixed; right: 18px; top: 42%; z-index: 60; display: grid; gap: 8px; }
.floating-service a, .floating-service button { width: 92px; min-height: 42px; border-radius: 13px; display: flex; align-items: center; justify-content: center; background: #fff; color: var(--deep); border: 1px solid var(--line); box-shadow: 0 14px 30px rgba(19,124,216,.10); font-size: 14px; }
.floating-service .register-link { background: linear-gradient(135deg, var(--bright), var(--primary), var(--deep)); color: #fff; border: 0; font-weight: 800; }
.floating-service button { font: inherit; }
.banner-wrap { background: var(--bg); padding: 36px 16px 28px; }
.banner-slider { max-width: 1200px; aspect-ratio: 16 / 5.4; margin: 0 auto; border-radius: 24px; background: #fff; box-shadow: var(--shadow-strong); 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: 44px; height: 44px; border: 0; border-radius: 999px; background: rgba(255,255,255,.9); color: var(--primary); box-shadow: 0 8px 20px rgba(19,124,216,.14); font-size: 28px; line-height: 1; }
.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: 9px; height: 9px; padding: 0; border-radius: 50%; border: 0; background: rgba(47,168,247,.24); }
.slider-dots button.active { background: var(--primary); }
.section { padding: 48px 0; }
.section.tight { padding: 28px 0; }
.section-kicker { margin: 0 0 6px; color: var(--primary); font-weight: 800; letter-spacing: .08em; font-size: 13px; text-transform: uppercase; }
h1, h2, h3, .section-title { color: var(--deep); line-height: 1.3; }
h1 { font-size: clamp(32px, 5vw, 54px); margin: 0 0 18px; }
h2 { font-size: clamp(24px, 3vw, 34px); margin: 0 0 14px; }
h3 { font-size: 20px; margin: 0 0 10px; }
p { margin: 0 0 14px; }
.lead { color: var(--muted); font-size: clamp(16px, 1.6vw, 19px); }
.section-head { max-width: 760px; margin-bottom: 26px; }
.section-head.center { margin-inline: auto; text-align: center; }
.card, .zone-card, .info-card, .review-card, .faq-item, .hero-panel, .notice-bar { background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: var(--radius-lg); }
.hero-section { padding: 52px 0 28px; }
.hero-panel { padding: clamp(24px, 5vw, 52px); display: grid; grid-template-columns: 1.25fr .75fr; align-items: center; gap: 38px; overflow: hidden; }
.hero-panel.no-image { grid-template-columns: 1fr; }
.hero-copy { max-width: 760px; }
.hero-visual { min-height: 260px; display: flex; align-items: center; justify-content: center; background: linear-gradient(145deg, #f7fbff, #e5f2ff); border-radius: 20px; padding: 18px; }
.hero-visual img { width: 100%; max-height: 320px; object-fit: contain; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 16px; margin-top: 22px; }
.text-link { color: var(--deep); font-weight: 800; display: inline-flex; gap: 6px; align-items: center; }
.text-link::after { content: "→"; }
.text-link:hover { color: var(--primary); }
.split { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 20px; }
.card, .zone-card, .info-card, .review-card { padding: 24px; }
.card img, .zone-card img { width: 100%; height: 190px; object-fit: contain; background: #f7fbff; border-radius: 16px; margin-bottom: 18px; }
.card .small-img { height: 150px; }
.info-card .num { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; border-radius: 12px; background: #edf7ff; color: var(--primary); font-weight: 900; margin-bottom: 14px; }
.pill-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px; }
.pill-item { background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 16px 20px; display: flex; align-items: center; justify-content: space-between; gap: 14px; box-shadow: 0 10px 24px rgba(19,124,216,.06); }
.pill-item strong { color: var(--deep); white-space: nowrap; }
.pill-item span { color: var(--muted); font-size: 14px; flex: 1; }
.pill-item a { color: var(--primary); font-weight: 800; white-space: nowrap; }
.notice-bar { padding: 24px 28px; background: linear-gradient(120deg, #fff, #edf7ff); }
.feature-list { display: grid; gap: 10px; margin: 16px 0 0; padding: 0; list-style: none; }
.feature-list li { position: relative; padding-left: 24px; color: var(--muted); }
.feature-list li::before { content: ""; position: absolute; left: 2px; top: .75em; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 5px rgba(47,168,247,.1); }
.review-card p { color: var(--muted); }
.review-card strong { display: block; color: var(--deep); margin-top: 12px; }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 20px 22px; }
.faq-item h3 { font-size: 18px; }
.faq-item p { color: var(--muted); margin: 0; }
.compliance-strip { background: #dceafb; padding: 28px 0; border-top: 1px solid rgba(47,168,247,.14); }
.compliance-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 18px; }
.compliance-grid div { display: grid; gap: 5px; }
.compliance-grid strong { color: var(--deep); }
.compliance-grid span { color: var(--muted); font-size: 14px; }
.site-footer { background: var(--footer); color: #EAF6FF; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3,1fr); gap: 36px; padding: 48px 0 34px; }
.footer-brand img { width: 160px; max-height: 52px; object-fit: contain; filter: brightness(0) invert(1); margin-bottom: 18px; }
.footer-brand p { color: #bad3e8; max-width: 440px; }
.site-footer h2 { color: #fff; font-size: 17px; }
.site-footer a { display: block; color: #bad3e8; margin: 8px 0; font-size: 14px; }
.site-footer a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.10); padding: 18px 16px 24px; text-align: center; color: #9cb9d0; font-size: 13px; }
.mobile-drawer, .drawer-overlay, .mobile-bottom-nav { display: none; }
.content-note { padding: 18px 20px; border-left: 4px solid var(--primary); background: #f6fbff; border-radius: 0 14px 14px 0; color: var(--muted); }
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.stat-item { background: #fff; border-radius: 18px; padding: 20px; border: 1px solid var(--line); }
.stat-item strong { display: block; color: var(--deep); font-size: 20px; }
.stat-item span { color: var(--muted); font-size: 14px; }
.article-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 24px; }
.article-main, .article-side { display: grid; gap: 22px; }
.step-grid { counter-reset: steps; display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
.step-card { counter-increment: steps; background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 22px; }
.step-card::before { content: counter(steps, decimal-leading-zero); display: block; color: var(--primary); font-weight: 900; font-size: 24px; margin-bottom: 10px; }
@media (max-width: 1180px) {
    .floating-service { display: none; }
    .header-inner { grid-template-columns: 170px 1fr auto; gap: 14px; }
    .nav-core { gap: 18px; }
}
@media (max-width: 900px) {
    body { padding-top: 72px; padding-bottom: 72px; }
    .site-header { height: 72px; }
    .header-inner { width: min(100% - 20px, 720px); min-height: 72px; grid-template-columns: 56px 1fr auto; gap: 10px; }
    .menu-toggle { display: block; justify-self: start; }
    .brand-logo { justify-self: center; }
    .brand-logo img { width: 132px; max-height: 44px; }
    .nav-core, .channel-bar { display: none; }
    .header-register { min-width: 78px; min-height: 40px; padding: 0 18px; }
    .mobile-drawer { display: block; position: fixed; z-index: 220; top: 0; bottom: 0; left: 0; width: min(84vw, 320px); background: #fff; transform: translateX(-105%); transition: transform .24s ease; box-shadow: 22px 0 50px rgba(16,43,70,.2); overflow-y: auto; }
    .mobile-drawer.open { transform: translateX(0); }
    .drawer-overlay { display: block; position: fixed; z-index: 210; inset: 0; background: rgba(16,43,70,.42); opacity: 0; transition: opacity .22s ease; }
    .drawer-overlay.show { opacity: 1; }
    .drawer-head { position: sticky; top: 0; z-index: 2; display: flex; align-items: center; justify-content: space-between; padding: 18px; background: rgba(255,255,255,.97); border-bottom: 1px solid var(--line); }
    .drawer-logo img { width: 142px; max-height: 46px; object-fit: contain; }
    .drawer-close { border: 0; background: #edf7ff; color: var(--deep); width: 38px; height: 38px; border-radius: 50%; font-size: 26px; line-height: 1; }
    .drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 16px 18px 28px; }
    .drawer-nav a { padding: 10px 12px; border-radius: 12px; background: #f7fbff; color: var(--text); font-size: 14px; }
    .mobile-bottom-nav { position: fixed; z-index: 150; left: 0; right: 0; bottom: 0; min-height: 64px; display: grid; grid-template-columns: repeat(4,1fr); background: rgba(255,255,255,.96); backdrop-filter: blur(12px); border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom); }
    .mobile-bottom-nav a { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; color: var(--muted); font-size: 12px; }
    .mobile-bottom-nav span { color: var(--deep); font-weight: 900; font-size: 14px; }
    .hero-panel, .article-grid { grid-template-columns: 1fr; }
    .hero-visual { min-height: 220px; }
    .grid-4, .compliance-grid, .step-grid { grid-template-columns: repeat(2,1fr); }
    .grid-3 { grid-template-columns: repeat(2,1fr); }
    .pill-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
    .footer-grid > div:last-child { grid-column: 2 / -1; }
    .banner-wrap { padding-top: 22px; }
}
@media (max-width: 620px) {
    .container { width: min(100% - 22px, 560px); }
    .section { padding: 36px 0; }
    .hero-section { padding-top: 26px; }
    .hero-panel { padding: 24px 20px; border-radius: 20px; gap: 22px; }
    h1 { font-size: 34px; }
    .banner-wrap { padding: 18px 10px 16px; }
    .banner-slider { aspect-ratio: 16 / 7.2; border-radius: 18px; }
    .slider-arrow { width: 36px; height: 36px; font-size: 22px; }
    .slider-arrow.prev { left: 8px; }.slider-arrow.next { right: 8px; }
    .split, .grid-3, .grid-4, .compliance-grid, .stat-row, .step-grid { grid-template-columns: 1fr; }
    .pill-grid { grid-template-columns: 1fr; }
    .pill-item { border-radius: 18px; align-items: flex-start; flex-wrap: wrap; }
    .pill-item span { flex-basis: calc(100% - 80px); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-grid > div:last-child { grid-column: auto; }
    .card img, .zone-card img { height: 160px; }
    .drawer-nav { grid-template-columns: 1fr; }
}

.drawer-overlay[hidden] { display: none !important; }