:root {
    --blue: #3f8fe5;
    --blue-dark: #2875c7;
    --blue-soft: #eaf4ff;
    --text: #34495e;
    --heading: #1f2d3d;
    --muted: #6f7f90;
    --line: #d8e4f0;
    --section: #f4f7fb;
    --section-2: #eef3f9;
    --shadow: 0 12px 32px rgba(43, 97, 153, 0.10);
    --container: 1240px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: #ffffff;
    color: var(--text);
    font-family: Arial, "Microsoft YaHei", sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
a { color: inherit; }
img { max-width: 100%; height: auto; }
button, a { -webkit-tap-highlight-color: transparent; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 10050; background: #fff; color: var(--blue-dark); padding: 10px 14px; border-radius: 8px; box-shadow: var(--shadow); }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; width: 100%; z-index: 9999; background: rgba(255,255,255,.94); backdrop-filter: blur(12px); border-bottom: 1px solid #e5edf5; box-shadow: 0 6px 20px rgba(43,97,153,.08); }
.header-inner { max-width: var(--container); min-height: 70px; margin: 0 auto; padding: 0 20px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.site-logo { display: inline-flex; flex: 0 0 auto; align-items: center; }
.site-logo img { display: block; width: 156px; max-height: 44px; object-fit: contain; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 6px; min-width: 0; }
.nav-core a { color: var(--text); text-decoration: none; padding: 8px 10px; border-radius: 8px; font-size: 15px; white-space: nowrap; }
.nav-core a:hover, .nav-core a.active { color: var(--blue-dark); background: var(--blue-soft); }
.header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.main-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 22px; color: #fff; background: var(--blue); border: 0; border-radius: 8px; text-decoration: none; box-shadow: 0 10px 24px rgba(63,143,229,.22); position: relative; z-index: 2; pointer-events: auto; touch-action: manipulation; font-weight: 700; cursor: pointer; transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
.main-btn:hover { background: #2f7fd3; transform: translateY(-1px); box-shadow: 0 14px 28px rgba(63,143,229,.26); }
.main-btn:focus-visible, .menu-toggle:focus-visible, .drawer-close:focus-visible, a:focus-visible { outline: 3px solid rgba(40,117,199,.35); outline-offset: 3px; }
.main-btn:active { transform: translateY(0); }
.menu-toggle { width: 46px; height: 46px; border: 1px solid var(--line); border-radius: 9px; background: #fff; display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px; cursor: pointer; position: relative; z-index: 3; }
.menu-toggle span { width: 20px; height: 2px; background: var(--heading); border-radius: 2px; }
.drawer-overlay { position: fixed; inset: 0; background: rgba(20,42,67,.34); z-index: 10000; opacity: 0; transition: opacity .22s ease; }
.drawer-overlay.show { opacity: 1; }
.drawer { position: fixed; top: 0; right: 0; width: min(390px, 90vw); height: 100vh; z-index: 10001; background: #fff; transform: translateX(105%); transition: transform .24s ease; box-shadow: -18px 0 44px rgba(20,42,67,.18); overflow-y: auto; padding: 18px; }
.drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid #e5edf5; }
.drawer-logo img { width: 150px; display: block; }
.drawer-close { width: 44px; height: 44px; border: 1px solid var(--line); background: #fff; border-radius: 9px; font-size: 30px; line-height: 1; color: var(--heading); cursor: pointer; }
.drawer-nav { display: grid; gap: 4px; padding: 16px 0 28px; }
.drawer-nav a:not(.main-btn) { text-decoration: none; padding: 12px 13px; border-radius: 8px; color: var(--text); }
.drawer-nav a:not(.main-btn):hover { background: var(--blue-soft); color: var(--blue-dark); }
.drawer-download { margin-top: 12px; width: 100%; }
main { min-height: 55vh; }
.container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
.narrow { width: min(880px, calc(100% - 40px)); margin: 0 auto; }
.section { padding: 82px 0; }
.section-sm { padding: 58px 0; }
.section-light { background: var(--section); }
.section-blue-soft { background: linear-gradient(180deg, #f7fbff 0%, #eef6ff 100%); }
.section-head { max-width: 760px; margin: 0 auto 38px; text-align: center; }
.eyebrow { display: inline-block; margin-bottom: 10px; color: var(--blue-dark); font-weight: 700; letter-spacing: .06em; font-size: 14px; }
h1, h2, h3, .section-title { color: var(--heading); line-height: 1.28; margin-top: 0; }
h1 { font-size: clamp(38px, 5vw, 64px); margin-bottom: 20px; letter-spacing: -.02em; }
h2 { font-size: clamp(28px, 3.5vw, 42px); margin-bottom: 18px; }
h3 { font-size: 21px; margin-bottom: 10px; }
p { margin: 0 0 16px; }
.lead { font-size: 19px; color: var(--muted); }
.muted { color: var(--muted); }
.text-link { color: #2f83d8; font-weight: 700; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.hero { position: relative; overflow: hidden; padding: 70px 0 82px; background: radial-gradient(circle at 88% 16%, rgba(63,143,229,.15), transparent 32%), radial-gradient(circle at 12% 82%, rgba(63,143,229,.08), transparent 34%), #fff; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero-copy { position: relative; z-index: 2; }
.hero-copy .lead { max-width: 700px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; margin: 30px 0 28px; }
.secondary-btn { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; padding: 0 20px; border: 1px solid var(--line); border-radius: 8px; text-decoration: none; color: var(--blue-dark); background: #fff; font-weight: 700; }
.secondary-btn:hover { border-color: var(--blue); background: var(--blue-soft); }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 0; padding: 0; list-style: none; color: var(--muted); }
.hero-points li { position: relative; padding-left: 18px; }
.hero-points li::before { content: ''; position: absolute; left: 0; top: .72em; width: 7px; height: 7px; border-radius: 50%; background: var(--blue); }
.hero-visual { display: flex; justify-content: center; position: relative; }
.hero-visual::before { content: ''; position: absolute; inset: 12% 7%; border-radius: 50%; background: rgba(63,143,229,.10); filter: blur(8px); }
.hero-visual img { position: relative; width: min(560px, 100%); max-height: 610px; object-fit: contain; display: block; }
.info-strip { margin-top: -28px; position: relative; z-index: 3; }
.info-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.info-card, .category-card, .review-card, .faq-card, .article-card, .notice-card, .step-card { background: #fff; border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 8px 24px rgba(43,97,153,.06); }
.info-card { padding: 24px; }
.info-card p { font-size: 14px; color: var(--muted); margin-bottom: 0; }
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.category-card { padding: 28px; min-height: 190px; display: flex; flex-direction: column; transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.category-card:hover { transform: translateY(-4px); border-color: var(--blue); box-shadow: var(--shadow); }
.category-card p { color: var(--muted); flex: 1; }
.category-card.full { grid-column: 1 / -1; min-height: 150px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 58px; align-items: center; }
.split.reverse .visual { order: 2; }
.visual { display: flex; justify-content: center; }
.visual img { width: min(480px, 100%); max-height: 430px; object-fit: contain; display: block; }
.content-copy ul, .check-list { padding-left: 20px; }
.content-copy li, .check-list li { margin-bottom: 9px; }
.dual-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.article-card { padding: 32px; }
.article-card .visual { margin-bottom: 20px; }
.article-card .visual img { max-height: 250px; }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.review-card { padding: 25px; }
.review-card p { color: var(--muted); margin-bottom: 0; }
.review-card strong { display: block; color: var(--heading); margin-bottom: 8px; }
.faq-list { display: grid; gap: 14px; }
details.faq-card { padding: 0; overflow: hidden; }
details.faq-card summary { cursor: pointer; list-style: none; padding: 20px 24px; color: var(--heading); font-weight: 700; position: relative; padding-right: 56px; }
details.faq-card summary::-webkit-details-marker { display: none; }
details.faq-card summary::after { content: '+'; position: absolute; right: 24px; top: 14px; font-size: 28px; color: var(--blue); }
details.faq-card[open] summary::after { content: '−'; }
details.faq-card .answer { padding: 0 24px 22px; color: var(--muted); }
.notice-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.notice-card { padding: 25px; }
.notice-meta { color: var(--blue-dark); font-weight: 700; font-size: 14px; margin-bottom: 9px; }
.risk-banner { background: #f2f8ff; border: 1px solid #cfe4fa; border-left: 5px solid var(--blue); border-radius: 10px; padding: 26px 28px; }
.risk-banner strong { color: var(--heading); }
.page-hero { padding: 72px 0 58px; background: linear-gradient(180deg, #f7fbff 0%, #fff 100%); border-bottom: 1px solid #e8f0f7; }
.page-hero .narrow { text-align: center; }
.page-hero h1 { font-size: clamp(36px, 5vw, 56px); }
.breadcrumb { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; font-size: 14px; color: var(--muted); }
.breadcrumb a { color: var(--blue-dark); text-decoration: none; }
.prose { font-size: 17px; }
.prose h2 { margin-top: 48px; font-size: 30px; }
.prose h3 { margin-top: 30px; }
.prose p { margin-bottom: 18px; }
.prose ul, .prose ol { padding-left: 24px; }
.prose li { margin-bottom: 10px; }
.callout { margin: 28px 0; padding: 22px 24px; background: var(--blue-soft); border: 1px solid #cfe4fa; border-radius: 10px; }
.step-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin: 26px 0; }
.step-card { padding: 24px; }
.step-no { width: 36px; height: 36px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; background: var(--blue); color: #fff; font-weight: 700; margin-bottom: 12px; }
.table-wrap { overflow-x: auto; margin: 26px 0; border: 1px solid var(--line); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; min-width: 680px; background: #fff; }
th, td { padding: 15px 16px; border-bottom: 1px solid #e5edf5; text-align: left; vertical-align: top; }
th { background: #f4f8fc; color: var(--heading); }
.cta { text-align: center; background: linear-gradient(135deg, #2f7fd3 0%, #4c9bec 100%); color: #fff; border-radius: 16px; padding: 48px 30px; }
.cta h2, .cta p { color: #fff; }
.cta .main-btn { background: #fff; color: var(--blue-dark); box-shadow: 0 10px 28px rgba(18,70,120,.18); }
.cta .main-btn:hover { background: #f3f8ff; }
.site-footer { background: #438ddf; color: #fff; }
.footer-inner { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; padding: 62px 0 38px; display: grid; grid-template-columns: 1.1fr 1.9fr; gap: 70px; }
.footer-brand img { width: 170px; filter: brightness(0) invert(1); }
.footer-brand p { margin-top: 18px; max-width: 480px; color: rgba(255,255,255,.85); }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.footer-links h2 { font-size: 17px; color: #fff; margin-bottom: 12px; }
.footer-links a { display: block; text-decoration: none; color: rgba(255,255,255,.82); margin: 7px 0; }
.footer-links a:hover { color: #fff; text-decoration: underline; }
.footer-risk { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; padding: 22px 0; border-top: 1px solid rgba(255,255,255,.22); color: rgba(255,255,255,.82); font-size: 14px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.18); text-align: center; padding: 18px 20px; color: rgba(255,255,255,.76); font-size: 14px; }
@media (max-width: 1080px) {
    .nav-core { display: none; }
    .info-grid { grid-template-columns: repeat(2, 1fr); }
    .category-grid { grid-template-columns: repeat(2, 1fr); }
    .category-card.full { grid-column: 1 / -1; }
    .review-grid, .notice-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .header-inner { min-height: 62px; padding: 0 14px; gap: 8px; }
    .site-logo img { width: 118px; max-height: 38px; }
    .header-actions { gap: 7px; }
    .header-download { min-height: 44px; padding: 0 14px; font-size: 14px; }
    .menu-toggle { width: 44px; height: 44px; }
    .container, .narrow { width: min(100% - 32px, var(--container)); }
    .section { padding: 60px 0; }
    .section-sm { padding: 46px 0; }
    .hero { padding: 50px 0 68px; }
    .hero-grid, .split, .dual-grid { grid-template-columns: 1fr; gap: 34px; }
    .split.reverse .visual { order: 0; }
    .hero-copy { text-align: left; }
    .hero-actions { align-items: stretch; }
    .hero-actions .main-btn, .hero-actions .secondary-btn { flex: 1 1 180px; }
    .hero-visual img { max-height: 460px; }
    .info-strip { margin-top: -22px; }
    .info-grid, .category-grid, .review-grid, .notice-grid, .step-grid { grid-template-columns: 1fr; }
    .category-card.full { grid-column: auto; }
    .category-card { min-height: auto; }
    .article-card { padding: 24px; }
    .footer-inner { grid-template-columns: 1fr; gap: 36px; padding-top: 48px; }
    .footer-links { grid-template-columns: 1fr 1fr; }
    .page-hero { padding: 54px 0 44px; }
    .prose { font-size: 16px; }
    .prose h2 { font-size: 27px; margin-top: 40px; }
}
@media (max-width: 460px) {
    .site-logo img { width: 104px; }
    .header-download { padding: 0 11px; font-size: 13px; }
    h1 { font-size: 36px; }
    .hero-actions { display: grid; grid-template-columns: 1fr; }
    .hero-actions .main-btn, .hero-actions .secondary-btn { width: 100%; }
    .info-grid { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: 1fr; }
    .cta { padding: 38px 20px; }
}