:root {
    --bg: #F4FBFF;
    --nav: #FFFFFF;
    --soft: #E8F7FF;
    --card: #FFFFFF;
    --title: #11AEEA;
    --blue: #1688D8;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(17,174,234,.18);
    --shadow: 0 18px 50px rgba(21,90,157,.10);
    --radius: 24px;
    --container: min(100% - 32px, 1360px);
}
* { 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: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif; line-height: 1.75; }
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
.container { width: var(--container); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -100px; z-index: 1000; background: #fff; color: var(--deep); padding: 10px 16px; border-radius: 10px; box-shadow: var(--shadow); }
.skip-link:focus { top: 16px; }
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--border); backdrop-filter: blur(16px); }
.header-inner { width: var(--container); height: 76px; margin-inline: auto; display: flex; align-items: center; gap: clamp(12px, 2vw, 28px); }
.brand-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand-logo img { width: auto; max-width: clamp(105px, 10vw, 150px); max-height: 50px; object-fit: contain; }
.desktop-nav { flex: 1; min-width: 0; display: flex; align-items: center; justify-content: center; gap: clamp(6px, .9vw, 16px); overflow: hidden; }
.desktop-nav a { flex: 0 1 auto; white-space: nowrap; font-size: clamp(13px, .92vw, 15px); color: var(--text); padding: 8px 4px; border-bottom: 2px solid transparent; }
.desktop-nav a:hover, .desktop-nav a.is-active { color: var(--blue); border-bottom-color: var(--title); }
.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; border: 1px solid transparent; transition: transform .2s ease, box-shadow .2s ease; }
.main-btn { color: #fff; background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%); box-shadow: 0 10px 24px rgba(22,136,216,.22); }
.secondary-btn { color: var(--deep); background: #fff; border-color: var(--border); }
.main-btn:hover, .secondary-btn:hover { transform: translateY(-2px); }
.menu-toggle { width: 44px; height: 44px; display: none; flex-direction: column; align-items: center; justify-content: center; gap: 5px; border: 1px solid var(--border); border-radius: 14px; background: #fff; cursor: pointer; }
.menu-toggle span { width: 20px; height: 2px; background: var(--deep); border-radius: 2px; }
.drawer-backdrop { position: fixed; inset: 0; z-index: 180; background: rgba(7,58,104,.38); }
.mobile-drawer { position: fixed; top: 0; right: 0; z-index: 200; width: min(88vw, 380px); height: 100dvh; padding: 18px; background: #fff; box-shadow: -20px 0 60px rgba(7,58,104,.2); transform: translateX(105%); transition: transform .28s ease; overflow-y: auto; }
.mobile-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.drawer-logo img { width: auto; max-width: 138px; max-height: 46px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 14px; background: var(--soft); color: var(--deep); font-size: 30px; cursor: pointer; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 18px 0; }
.drawer-nav a { padding: 12px 14px; border-radius: 12px; background: var(--bg); color: var(--text); }
.drawer-nav a:hover { color: var(--blue); background: var(--soft); }
.drawer-register { width: 100%; }
.carousel-wrap { width: var(--container); margin: 28px auto 0; }
.carousel { position: relative; overflow: hidden; border-radius: clamp(18px, 2.6vw, 34px); background: var(--soft); box-shadow: var(--shadow); }
.carousel-track { display: flex; transition: transform .55s ease; }
.carousel-slide { flex: 0 0 100%; min-width: 100%; }
.carousel-slide img { width: 100%; height: clamp(240px, 42vw, 590px); object-fit: contain; background: var(--soft); }
.carousel-arrow { position: absolute; top: 50%; z-index: 4; width: 48px; height: 48px; transform: translateY(-50%); border: 1px solid rgba(255,255,255,.65); border-radius: 50%; color: #fff; background: rgba(7,58,104,.38); font-size: 34px; line-height: 1; cursor: pointer; backdrop-filter: blur(8px); }
.carousel-arrow.prev { left: 18px; }
.carousel-arrow.next { right: 18px; }
.carousel-dots { position: absolute; left: 50%; bottom: 18px; z-index: 4; display: flex; gap: 8px; transform: translateX(-50%); }
.carousel-dot { width: 10px; height: 10px; padding: 0; border: 1px solid rgba(255,255,255,.8); border-radius: 50%; background: rgba(255,255,255,.5); cursor: pointer; }
.carousel-dot.is-active { width: 28px; border-radius: 999px; background: #fff; }
.hero-copy { padding: 44px 0 80px; }
.hero-copy-inner { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr); gap: 28px; align-items: stretch; }
.hero-copy-inner > div, .hero-note { padding: clamp(26px, 4vw, 54px); border: 1px solid var(--border); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.hero-copy h1, .page-hero h1 { margin: 8px 0 16px; color: var(--deep); font-size: clamp(36px, 5vw, 68px); line-height: 1.12; letter-spacing: -.03em; }
.hero-note { background: linear-gradient(145deg, #E8F7FF, #fff); }
.hero-note h2 { margin-top: 0; color: var(--deep); }
.hero-note ul, .clean-list { margin: 0; padding-left: 22px; }
.hero-note li, .clean-list li { margin: 10px 0; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--title); font-weight: 800; letter-spacing: .08em; font-size: 13px; }
.eyebrow::before { content: ""; width: 22px; height: 3px; border-radius: 3px; background: linear-gradient(90deg, #35D7FF, #1688D8); }
.lead { color: var(--muted); font-size: clamp(17px, 1.7vw, 21px); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.section { padding: clamp(58px, 7vw, 96px) 0; }
.section.compact { padding-top: 28px; }
.section-soft { background: var(--soft); }
.section-white { background: #fff; }
.section-head { max-width: 820px; margin-bottom: 30px; }
.section-head h2, .media-copy h2, .grid-2 h2 { margin: 8px 0 12px; color: var(--deep); font-size: clamp(28px, 3.4vw, 46px); line-height: 1.2; }
.grid-2, .grid-3, .grid-4, .grid-5 { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); align-items: center; }
.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, .review-card, .notice, .step { min-width: 0; padding: 24px; border: 1px solid var(--border); border-radius: 20px; background: var(--card); box-shadow: 0 12px 34px rgba(21,90,157,.07); }
.card h3, .review-card strong, .step h3 { color: var(--deep); }
.card p, .review-card p, .step p, .notice p { color: var(--muted); }
.card-link { display: inline-flex; margin-top: 10px; color: var(--blue); font-weight: 800; }
.card-link::after { content: "→"; margin-left: 6px; }
.media-panel { display: grid; grid-template-columns: minmax(0,1.04fr) minmax(300px,.96fr); gap: clamp(26px, 5vw, 70px); align-items: center; }
.media-panel.reverse .media-copy { order: 2; }
.media-panel.reverse .media-frame { order: 1; }
.media-frame { overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.media-frame img { width: 100%; max-height: 580px; object-fit: contain; background: #fff; }
.media-card img { width: 100%; height: 180px; object-fit: contain; margin-bottom: 18px; border-radius: 14px; background: var(--soft); }
.notice { background: linear-gradient(145deg, #fff, #E8F7FF); }
.notice strong { display: block; color: var(--deep); font-size: 20px; }
.compliance-notice { border-left: 5px solid var(--title); }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; counter-reset: step; }
.step { position: relative; padding-top: 64px; }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); position: absolute; top: 18px; left: 22px; color: var(--title); font-size: 24px; font-weight: 900; }
.page-hero { padding: 58px 0 50px; background: radial-gradient(circle at 85% 20%, rgba(53,215,255,.22), transparent 32%), linear-gradient(180deg, #fff, var(--soft)); border-bottom: 1px solid var(--border); }
.page-hero-inner { max-width: 980px; }
.breadcrumb { display: flex; gap: 10px; align-items: center; color: var(--muted); font-size: 14px; }
.breadcrumb a { color: var(--blue); }
.faq-list { display: grid; gap: 14px; }
.faq-item { overflow: hidden; border: 1px solid var(--border); border-radius: 18px; background: #fff; }
.faq-item button { width: 100%; padding: 20px 24px; border: 0; background: #fff; color: var(--deep); text-align: left; font-weight: 800; cursor: pointer; }
.faq-item button::after { content: "+"; float: right; color: var(--title); font-size: 24px; }
.faq-item.is-open button::after { content: "−"; }
.faq-answer { display: none; padding: 0 24px 22px; color: var(--muted); }
.faq-item.is-open .faq-answer { display: block; }
.site-footer { color: #EAF8FF; background: #073A68; }
.footer-inner { width: var(--container); margin-inline: auto; padding: 58px 0 36px; display: grid; grid-template-columns: minmax(260px,.8fr) minmax(0,1.2fr); gap: 60px; }
.footer-brand img { width: auto; max-width: 150px; max-height: 54px; object-fit: contain; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 440px; color: rgba(234,248,255,.78); }
.footer-links { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 30px; }
.footer-links h2 { margin: 0 0 12px; font-size: 17px; }
.footer-links a { display: block; margin: 8px 0; color: rgba(234,248,255,.8); }
.footer-bottom { width: var(--container); margin-inline: auto; padding: 22px 0 32px; display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid rgba(234,248,255,.14); color: rgba(234,248,255,.7); font-size: 14px; }
.footer-bottom p { margin: 0; }
@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: flex; }
    .header-inner { justify-content: space-between; }
    .brand-logo { margin-right: auto; }
    .grid-5 { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .grid-4 { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 860px) {
    .hero-copy-inner, .media-panel, .grid-2, .footer-inner { grid-template-columns: 1fr; }
    .media-panel.reverse .media-copy, .media-panel.reverse .media-frame { order: initial; }
    .grid-3, .steps { grid-template-columns: 1fr 1fr; }
    .footer-inner { gap: 32px; }
    .footer-bottom { flex-direction: column; }
    .carousel-slide img { height: clamp(220px, 58vw, 480px); }
}
@media (max-width: 620px) {
    :root { --container: min(100% - 20px, 1360px); }
    .header-inner { height: 68px; gap: 8px; }
    .brand-logo img { max-width: 110px; max-height: 42px; }
    .header-register { min-height: 40px; padding: 0 16px; font-size: 14px; }
    .menu-toggle { width: 40px; height: 40px; border-radius: 12px; }
    .carousel-wrap { margin-top: 14px; }
    .carousel-slide img { height: clamp(190px, 62vw, 330px); }
    .carousel-arrow { width: 38px; height: 38px; font-size: 28px; }
    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }
    .carousel-dots { bottom: 10px; }
    .hero-copy { padding: 22px 0 54px; }
    .hero-copy-inner > div, .hero-note { padding: 24px; }
    .hero-copy h1, .page-hero h1 { font-size: 34px; }
    .section { padding: 54px 0; }
    .grid-3, .grid-4, .grid-5, .steps, .footer-links { grid-template-columns: 1fr; }
    .card, .review-card, .notice, .step { padding: 21px; }
    .drawer-nav { grid-template-columns: 1fr; }
    .footer-inner { padding-top: 44px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}