:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --soft: #E8F7FF;
    --primary: #10AEEA;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --footer: #073A68;
    --line: rgba(21, 90, 157, .12);
    --shadow: 0 18px 48px rgba(22, 136, 216, .12);
    --radius: 24px;
    --radius-sm: 15px;
    --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.75;
    overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
.container { width: min(1180px, calc(100% - 36px)); margin: 0 auto; }
.skip-link { position: fixed; left: 18px; top: -80px; z-index: 9999; background: #fff; color: var(--deep); padding: 10px 16px; border-radius: 10px; box-shadow: var(--shadow); }
.skip-link:focus { top: 18px; }
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.95); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.header-inner { height: 76px; display: flex; align-items: center; gap: 22px; }
.brand-logo { flex: 0 0 auto; width: 142px; }
.brand-logo img { width: 142px; height: 42px; object-fit: contain; }
.desktop-nav { display: flex; align-items: center; justify-content: center; gap: 4px; flex: 1; min-width: 0; }
.desktop-nav a { white-space: nowrap; padding: 10px 9px; border-radius: 10px; color: #36566f; font-size: 14px; font-weight: 650; transition: .2s ease; }
.desktop-nav a:hover, .desktop-nav a.active { color: var(--primary); background: var(--soft); }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.main-btn, .ghost-btn, .text-link { display: inline-flex; align-items: center; justify-content: center; font-weight: 750; border-radius: 999px; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.main-btn { min-height: 42px; padding: 10px 22px; color: #fff; background: var(--gradient); box-shadow: 0 10px 24px rgba(22, 136, 216, .25); }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(22,136,216,.34); }
.ghost-btn { min-height: 42px; padding: 10px 20px; color: var(--deep); background: #fff; border: 1px solid rgba(21,90,157,.18); }
.text-link { color: var(--deep); gap: 6px; }
.text-link::after { content: "→"; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 0; border-radius: 12px; background: var(--soft); padding: 10px; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; background: var(--deep); border-radius: 5px; }
.mobile-drawer { position: fixed; z-index: 1200; inset: 0 0 0 auto; width: min(88vw, 380px); background: #fff; transform: translateX(105%); transition: transform .25s ease; padding: 18px; overflow-y: auto; box-shadow: -18px 0 46px rgba(7,58,104,.2); }
.mobile-drawer.open { transform: translateX(0); }
.drawer-overlay { position: fixed; inset: 0; z-index: 1100; background: rgba(7,58,104,.48); opacity: 0; pointer-events: none; transition: opacity .25s ease; }
.drawer-overlay.open { opacity: 1; pointer-events: auto; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.drawer-logo img { width: 136px; height: 40px; object-fit: contain; }
.drawer-close { border: 0; background: var(--soft); color: var(--deep); width: 42px; height: 42px; border-radius: 12px; font-size: 28px; cursor: pointer; }
.drawer-nav { display: grid; padding: 12px 0; }
.drawer-nav a { display: flex; align-items: center; justify-content: space-between; padding: 12px 6px; color: #36566f; border-bottom: 1px solid rgba(21,90,157,.08); font-weight: 650; }
.drawer-register { width: 100%; margin-top: 8px; }
section { padding: 72px 0; }
.section-soft { background: var(--soft); }
.section-head { max-width: 760px; margin-bottom: 30px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px; color: var(--deep); background: rgba(16,174,234,.1); border-radius: 999px; font-size: 13px; font-weight: 800; letter-spacing: .04em; }
h1, h2, h3 { margin: 0 0 14px; line-height: 1.25; color: var(--deep); }
h1 { font-size: clamp(34px, 5vw, 58px); letter-spacing: -.03em; }
h2 { font-size: clamp(28px, 4vw, 42px); letter-spacing: -.02em; }
h3 { font-size: 21px; }
p { margin: 0 0 16px; }
.lead { font-size: clamp(17px, 2vw, 20px); color: var(--muted); }
.muted { color: var(--muted); }
.hero { padding: 54px 0 42px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 44px; align-items: center; }
.hero-copy { max-width: 650px; }
.hero-copy .actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.hero-image { background: #fff; border-radius: 30px; padding: 14px; box-shadow: var(--shadow); }
.hero-image img { width: 100%; aspect-ratio: 16/10; object-fit: contain; border-radius: 20px; background: #edf8ff; }
.carousel { position: relative; overflow: hidden; background: #dff4ff; }
.carousel-track { display: flex; transition: transform .55s ease; }
.carousel-slide { min-width: 100%; }
.carousel-slide img { width: 100%; height: clamp(250px, 42vw, 560px); object-fit: cover; }
.carousel-arrow { position: absolute; top: 50%; transform: translateY(-50%); width: 48px; height: 48px; border: 0; border-radius: 50%; background: rgba(255,255,255,.9); color: var(--deep); font-size: 30px; cursor: pointer; box-shadow: 0 10px 28px rgba(7,58,104,.18); }
.carousel-arrow.prev { left: 22px; }
.carousel-arrow.next { right: 22px; }
.carousel-dots { position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%); display: flex; gap: 8px; }
.carousel-dot { width: 10px; height: 10px; border: 0; padding: 0; border-radius: 50%; background: rgba(255,255,255,.64); box-shadow: 0 0 0 1px rgba(7,58,104,.12); cursor: pointer; }
.carousel-dot.active { width: 28px; border-radius: 999px; background: #fff; }
.intro-panel { margin-top: -1px; background: #fff; border-bottom: 1px solid var(--line); }
.intro-panel .container { padding-top: 54px; padding-bottom: 34px; }
.quick-scroll { display: flex; gap: 10px; overflow-x: auto; padding: 2px 0 8px; scrollbar-width: thin; }
.quick-scroll a { flex: 0 0 auto; padding: 10px 18px; border-radius: 999px; background: #fff; color: var(--deep); border: 1px solid rgba(21,90,157,.15); font-weight: 700; box-shadow: 0 8px 22px rgba(22,136,216,.07); }
.grid-2, .grid-3, .grid-4 { 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 { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: 0 14px 36px rgba(22,136,216,.08); }
.card p:last-child { margin-bottom: 0; }
.card .icon { width: 48px; height: 48px; display: grid; place-items: center; margin-bottom: 18px; border-radius: 14px; color: #fff; background: var(--gradient); font-weight: 900; }
.media-card { overflow: hidden; padding: 0; }
.media-card img { width: 100%; aspect-ratio: 16/10; object-fit: contain; background: #edf8ff; }
.media-card .card-body { padding: 26px; }
.feature { display: grid; grid-template-columns: 1.05fr .95fr; gap: 30px; align-items: center; background: #fff; border-radius: 30px; padding: 24px; box-shadow: var(--shadow); }
.feature.reverse { grid-template-columns: .95fr 1.05fr; }
.feature.reverse .feature-image { order: 2; }
.feature-image img { width: 100%; aspect-ratio: 16/10; object-fit: contain; background: #edf8ff; border-radius: 22px; }
.feature-copy { padding: 18px; }
.feature-list { display: grid; gap: 10px; padding: 0; margin: 20px 0 0; list-style: none; }
.feature-list li { position: relative; padding-left: 24px; color: var(--muted); }
.feature-list li::before { content: ""; position: absolute; left: 0; top: .68em; width: 9px; height: 9px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 5px rgba(16,174,234,.1); }
.banner { display: grid; grid-template-columns: 1.2fr .8fr; align-items: center; gap: 28px; padding: 36px; border-radius: 30px; background: linear-gradient(135deg,#fff 0%,#e0f6ff 100%); border: 1px solid rgba(16,174,234,.14); box-shadow: var(--shadow); }
.banner img { width: 100%; aspect-ratio: 16/9; object-fit: contain; border-radius: 22px; background: rgba(255,255,255,.75); }
.notice-card { background: linear-gradient(135deg,#0f75b8,#073A68); color: #eaf8ff; border-radius: 26px; padding: 30px; }
.notice-card h2, .notice-card h3 { color: #fff; }
.notice-card p { color: #d9f3ff; }
.review-card { position: relative; }
.review-card::before { content: "“"; position: absolute; right: 18px; top: 8px; color: rgba(16,174,234,.14); font-size: 72px; font-weight: 900; line-height: 1; }
.review-role { display: inline-flex; padding: 5px 10px; border-radius: 999px; color: var(--deep); background: var(--soft); font-size: 13px; font-weight: 800; margin-bottom: 14px; }
.steps { counter-reset: step; display: grid; gap: 16px; }
.step { counter-increment: step; display: grid; grid-template-columns: 48px 1fr; gap: 14px; align-items: start; }
.step::before { content: counter(step); width: 42px; height: 42px; display: grid; place-items: center; border-radius: 14px; color: #fff; background: var(--gradient); font-weight: 900; }
.table-wrap { overflow-x: auto; background: #fff; border: 1px solid var(--line); border-radius: 22px; }
table { width: 100%; border-collapse: collapse; min-width: 720px; }
th, td { padding: 16px 18px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--deep); background: var(--soft); }
.faq-list { display: grid; gap: 12px; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 18px; border: 0; padding: 18px 20px; background: #fff; color: var(--deep); text-align: left; font-weight: 800; cursor: pointer; }
.faq-question span:last-child { font-size: 24px; transition: transform .2s ease; }
.faq-item.open .faq-question span:last-child { transform: rotate(45deg); }
.faq-answer { display: none; padding: 0 20px 20px; color: var(--muted); }
.faq-item.open .faq-answer { display: block; }
.callout { padding: 26px; background: var(--soft); border-left: 4px solid var(--primary); border-radius: 0 18px 18px 0; }
.link-list { display: grid; gap: 10px; }
.link-list a { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 15px 16px; border-radius: 14px; background: #fff; border: 1px solid var(--line); color: var(--deep); font-weight: 700; }
.site-footer { background: var(--footer); color: #EAF8FF; padding-top: 58px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3,1fr); gap: 34px; }
.footer-brand img { width: 150px; height: 44px; object-fit: contain; filter: brightness(0) invert(1); margin-bottom: 18px; }
.site-footer h2 { color: #fff; font-size: 18px; }
.site-footer a { display: block; color: #d7effb; margin: 8px 0; }
.site-footer a:hover { color: #fff; }
.footer-notice { margin-top: 38px; padding: 22px 0 30px; border-top: 1px solid rgba(234,248,255,.16); color: #c6e5f5; font-size: 14px; }
.footer-notice p:last-child { margin-bottom: 0; }
@media (max-width: 1179px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: block; }
}
@media (max-width: 900px) {
    section { padding: 56px 0; }
    .hero-grid, .feature, .feature.reverse, .banner { grid-template-columns: 1fr; }
    .feature.reverse .feature-image { order: 0; }
    .grid-4 { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .grid-3 { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .footer-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 620px) {
    .container { width: min(100% - 24px, 1180px); }
    .header-inner { height: 68px; gap: 12px; }
    .brand-logo, .brand-logo img { width: 122px; }
    .header-actions .main-btn { padding: 9px 16px; min-height: 40px; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .card { padding: 22px; }
    .hero { padding-top: 34px; }
    .hero-grid { gap: 24px; }
    .carousel-slide img { height: 270px; }
    .carousel-arrow { width: 40px; height: 40px; font-size: 24px; }
    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }
    .banner { padding: 24px; }
    .footer-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}