:root {
    --blue: #3f8fe5;
    --blue-dark: #2875c7;
    --blue-hover: #2f7fd3;
    --blue-soft: #eaf4ff;
    --bg: #ffffff;
    --bg-light: #f4f7fb;
    --bg-alt: #eef3f9;
    --title: #1f2d3d;
    --text: #34495e;
    --muted: #6f7f90;
    --hint: #8c99a8;
    --border: #d8e4f0;
    --line: #e5edf5;
    --shadow: 0 12px 32px rgba(43, 97, 153, .10);
    --radius: 14px;
    --container: 1240px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.75;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
body.drawer-open { overflow: hidden; }
a { color: var(--blue-dark); }
a:hover { color: var(--blue-hover); }
img { max-width: 100%; height: auto; }
button, a { -webkit-tap-highlight-color: transparent; }
button, input, textarea, select { font: inherit; }
.skip-link {
    position: fixed; left: 16px; top: -100px; z-index: 12000;
    padding: 10px 16px; color: #fff; background: var(--blue-dark); border-radius: 8px;
}
.skip-link:focus { top: 12px; }
.container { width: min(calc(100% - 40px), var(--container)); margin: 0 auto; }
.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 var(--line); 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, .drawer-logo { display: inline-flex; align-items: center; flex: 0 0 auto; }
.site-logo img { display: block; max-height: 44px; width: auto; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 6px; flex: 1; }
.nav-core a {
    color: var(--text); text-decoration: none; padding: 8px 10px; border-radius: 8px;
    font-size: 14px; font-weight: 600; 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, .secondary-btn {
    display: inline-flex; align-items: center; justify-content: center; min-height: 44px;
    padding: 0 22px; border-radius: 9px; text-decoration: none; font-weight: 700;
    position: relative; z-index: 2; pointer-events: auto; touch-action: manipulation;
    transition: transform .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.main-btn { color: #fff; background: var(--blue); box-shadow: 0 10px 24px rgba(63, 143, 229, .22); }
.main-btn:hover { color: #fff; background: var(--blue-hover); transform: translateY(-1px); }
.secondary-btn { color: var(--blue-dark); background: #fff; border: 1px solid var(--border); }
.secondary-btn:hover { color: var(--blue-dark); border-color: var(--blue); background: var(--blue-soft); transform: translateY(-1px); }
.main-btn:focus-visible, .secondary-btn:focus-visible, .menu-toggle:focus-visible, .drawer-close:focus-visible, a:focus-visible, button:focus-visible {
    outline: 3px solid rgba(63, 143, 229, .35); outline-offset: 3px;
}
.menu-toggle {
    width: 44px; height: 44px; border: 1px solid var(--border); 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(--title); border-radius: 2px; }
.drawer-overlay {
    position: fixed; inset: 0; z-index: 10000; background: rgba(16, 32, 48, .48);
    opacity: 0; transition: opacity .22s ease;
}
.drawer-overlay.is-visible { opacity: 1; }
.site-drawer {
    position: fixed; z-index: 10001; right: 0; top: 0; width: min(390px, 90vw); height: 100dvh;
    padding: 22px; background: #fff; box-shadow: -18px 0 42px rgba(15, 48, 79, .18);
    transform: translateX(105%); transition: transform .24s ease; overflow-y: auto;
}
.site-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.drawer-logo img { max-height: 40px; width: auto; }
.drawer-close { width: 44px; height: 44px; border: 0; border-radius: 50%; background: var(--bg-light); color: var(--title); font-size: 30px; line-height: 1; cursor: pointer; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 20px 0; }
.drawer-nav a { padding: 10px 12px; border-radius: 8px; color: var(--text); text-decoration: none; background: var(--bg-light); }
.drawer-nav a:hover { color: var(--blue-dark); background: var(--blue-soft); }
.drawer-download { width: 100%; }
.hero {
    position: relative; overflow: hidden; padding: 84px 0 72px;
    background: linear-gradient(135deg, #fff 0%, #f8fbff 52%, #eef6ff 100%);
}
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; pointer-events: none; }
.hero::before { width: 420px; height: 420px; right: -180px; top: -210px; background: rgba(63, 143, 229, .08); }
.hero::after { width: 240px; height: 240px; left: -120px; bottom: -140px; background: rgba(63, 143, 229, .06); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr); align-items: center; gap: 64px; }
.eyebrow { display: inline-flex; margin-bottom: 14px; padding: 5px 12px; border-radius: 999px; color: var(--blue-dark); background: var(--blue-soft); font-size: 14px; font-weight: 700; }
h1, h2, h3, .section-title { color: var(--title); line-height: 1.3; margin-top: 0; }
h1 { margin-bottom: 18px; font-size: clamp(36px, 5vw, 62px); letter-spacing: -.035em; }
h2 { font-size: clamp(28px, 3.5vw, 42px); letter-spacing: -.02em; }
h3 { font-size: 21px; }
.hero-subtitle { margin: 0 0 16px; color: var(--blue-dark); font-size: clamp(20px, 2.4vw, 28px); font-weight: 700; line-height: 1.45; }
.hero-copy > p { max-width: 720px; color: var(--muted); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-links { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 22px; }
.hero-links a { font-size: 14px; text-underline-offset: 4px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; padding: 0; list-style: none; }
.hero-points li { padding: 7px 12px; border: 1px solid #cfe3f8; border-radius: 999px; color: var(--blue-dark); background: rgba(255,255,255,.82); font-size: 13px; }
.hero-visual { display: flex; justify-content: center; align-items: center; }
.hero-visual img { display: block; width: min(100%, 520px); max-height: 590px; object-fit: contain; filter: drop-shadow(0 24px 35px rgba(43, 97, 153, .16)); }
.section { padding: 80px 0; }
.section-light { background: var(--bg-light); }
.section-alt { background: var(--bg-alt); }
.section-head { max-width: 780px; margin: 0 auto 40px; text-align: center; }
.section-head p { margin-bottom: 0; color: var(--muted); }
.info-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.category-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; }
.category-card, .info-card, .review-card, .faq-card, .article-card, .notice-card, .risk-card {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: 0 8px 24px rgba(43, 97, 153, .06);
}
.info-card { padding: 25px; }
.info-card h3 { margin-bottom: 8px; color: var(--blue-dark); }
.info-card p { margin: 0; color: var(--muted); }
.category-card { display: flex; flex-direction: column; min-height: 215px; padding: 28px; transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.category-card:hover { border-color: var(--blue); transform: translateY(-4px); box-shadow: var(--shadow); }
.category-card h3 { margin-bottom: 10px; color: var(--blue-dark); }
.category-card p { margin: 0 0 22px; color: var(--muted); flex: 1; }
.category-card a { align-self: flex-start; font-weight: 700; text-underline-offset: 4px; }
.category-card.is-wide { grid-column: 1 / -1; min-height: auto; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .82fr); align-items: center; gap: 64px; }
.split.reverse { grid-template-columns: minmax(320px, .82fr) minmax(0, 1fr); }
.split.reverse .split-media { order: -1; }
.split-media img { display: block; width: 100%; max-height: 470px; object-fit: contain; }
.split-copy p { color: var(--muted); }
.check-list, .plain-list { padding: 0; margin: 24px 0; list-style: none; }
.check-list li, .plain-list li { position: relative; padding-left: 26px; margin: 9px 0; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--blue); font-weight: 800; }
.plain-list li::before { content: "•"; position: absolute; left: 6px; color: var(--blue); font-weight: 800; }
.dual-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px; }
.article-card { padding: 34px; }
.article-card img { width: 100%; height: 230px; object-fit: contain; margin-bottom: 24px; }
.article-card p { color: var(--muted); }
.text-link { color: var(--blue-dark); font-weight: 700; text-underline-offset: 4px; }
.notice-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.notice-card { padding: 26px; }
.notice-card time, .notice-tag { color: var(--hint); font-size: 13px; }
.notice-card h3 { margin: 10px 0; }
.notice-card p { margin-bottom: 0; color: var(--muted); }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.review-card { padding: 25px; }
.review-card p { margin: 0 0 16px; color: var(--text); }
.review-card span { color: var(--hint); font-size: 14px; }
.faq-list { max-width: 900px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item { overflow: hidden; background: #fff; border: 1px solid var(--border); border-radius: 12px; }
.faq-question { width: 100%; min-height: 60px; padding: 16px 54px 16px 20px; text-align: left; color: var(--title); background: #fff; border: 0; font-weight: 700; cursor: pointer; position: relative; }
.faq-question::after { content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); color: var(--blue); font-size: 24px; }
.faq-item.is-open .faq-question::after { content: "−"; }
.faq-answer { padding: 0 20px 20px; color: var(--muted); }
.faq-answer p { margin: 0; }
.risk-panel { padding: 34px; border: 1px solid #bfd9f4; border-radius: var(--radius); background: linear-gradient(135deg, #f8fbff, #edf6ff); }
.risk-panel h2 { font-size: clamp(26px, 3vw, 36px); }
.page-hero { padding: 70px 0 56px; background: linear-gradient(135deg, #f8fbff, #eef6ff); border-bottom: 1px solid var(--line); }
.page-hero .container { max-width: 1000px; }
.page-hero h1 { font-size: clamp(34px, 4.6vw, 54px); }
.page-hero p { max-width: 790px; color: var(--muted); font-size: 18px; }
.breadcrumb { margin-bottom: 18px; color: var(--hint); font-size: 14px; }
.breadcrumb a { text-decoration: none; }
.content-layout { display: grid; grid-template-columns: minmax(0, 1fr) 290px; gap: 50px; align-items: start; }
.prose { min-width: 0; }
.prose section { scroll-margin-top: 90px; margin-bottom: 46px; }
.prose h2 { margin-bottom: 16px; font-size: clamp(25px, 3vw, 34px); }
.prose h3 { margin-top: 26px; margin-bottom: 10px; }
.prose p { margin: 0 0 16px; }
.prose ul, .prose ol { padding-left: 24px; }
.prose li { margin: 8px 0; }
.prose .callout { margin: 24px 0; padding: 22px 24px; border-left: 4px solid var(--blue); background: var(--blue-soft); border-radius: 0 10px 10px 0; }
.prose .warning { border-left-color: #d88a2b; background: #fff8ed; }
.side-nav { position: sticky; top: 96px; padding: 22px; border: 1px solid var(--border); border-radius: 12px; background: #fff; }
.side-nav h2 { font-size: 18px; }
.side-nav a { display: block; padding: 7px 0; color: var(--muted); text-decoration: none; border-bottom: 1px solid var(--line); }
.side-nav a:last-child { border-bottom: 0; }
.side-nav a:hover { color: var(--blue-dark); }
.data-table { width: 100%; border-collapse: collapse; margin: 22px 0; background: #fff; }
.data-table th, .data-table td { padding: 14px 16px; border: 1px solid var(--border); text-align: left; vertical-align: top; }
.data-table th { color: var(--title); background: var(--bg-light); }
.tag-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0 0; }
.tag { padding: 5px 10px; border-radius: 999px; color: var(--blue-dark); background: var(--blue-soft); font-size: 13px; }
.cta-band { padding: 42px; border-radius: 18px; color: #fff; background: linear-gradient(135deg, var(--blue), var(--blue-dark)); display: flex; justify-content: space-between; align-items: center; gap: 30px; }
.cta-band h2, .cta-band p { color: #fff; }
.cta-band p { margin-bottom: 0; opacity: .9; }
.cta-band .secondary-btn { flex: 0 0 auto; }
.contact-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.contact-card { padding: 28px; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; }
.contact-card p { color: var(--muted); }
.site-footer { background: #438ddf; color: #fff; }
.footer-inner { width: min(calc(100% - 40px), var(--container)); margin: 0 auto; padding: 64px 0 40px; display: grid; grid-template-columns: 1.1fr 1.9fr; gap: 60px; }
.footer-brand img { display: block; width: auto; max-height: 44px; margin-bottom: 20px; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 470px; margin: 0; color: rgba(255,255,255,.86); }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.footer-links h2 { color: #fff; font-size: 16px; margin-bottom: 14px; }
.footer-links a { display: block; padding: 5px 0; color: rgba(255,255,255,.86); text-decoration: none; }
.footer-links a:hover { color: #fff; text-decoration: underline; }
.footer-risk, .footer-bottom { border-top: 1px solid rgba(255,255,255,.18); }
.footer-risk { padding: 24px max(20px, calc((100vw - var(--container)) / 2)); color: rgba(255,255,255,.88); }
.footer-bottom { padding: 18px 20px; text-align: center; color: rgba(255,255,255,.78); font-size: 14px; }
@media (max-width: 1080px) {
    .nav-core { display: none; }
    .hero-grid { grid-template-columns: 1fr 420px; gap: 34px; }
    .info-grid { grid-template-columns: repeat(2, 1fr); }
    .content-layout { grid-template-columns: 1fr; }
    .side-nav { position: static; display: none; }
}
@media (max-width: 860px) {
    .hero { padding: 58px 0; }
    .hero-grid, .split, .split.reverse { grid-template-columns: 1fr; gap: 36px; }
    .split.reverse .split-media { order: 0; }
    .hero-copy { text-align: center; }
    .hero-copy > p { margin-left: auto; margin-right: auto; }
    .hero-actions, .hero-links, .hero-points { justify-content: center; }
    .hero-visual img { max-height: 450px; }
    .category-grid { grid-template-columns: repeat(2, 1fr); }
    .category-card.is-wide { grid-column: 1 / -1; }
    .notice-grid, .review-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-inner { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 640px) {
    body { font-size: 15px; }
    .container { width: min(calc(100% - 32px), var(--container)); }
    .header-inner { min-height: 62px; padding: 0 14px; gap: 8px; }
    .site-logo img { max-height: 34px; max-width: 128px; }
    .header-actions { gap: 6px; }
    .header-download { min-height: 44px; padding: 0 13px; font-size: 13px; }
    .menu-toggle { width: 44px; height: 44px; }
    .site-drawer { padding: 18px; }
    .drawer-nav { grid-template-columns: 1fr; }
    .hero { padding: 46px 0 52px; }
    h1 { font-size: 38px; }
    .hero-subtitle { font-size: 20px; }
    .hero-actions { display: grid; grid-template-columns: 1fr; }
    .hero-actions a { width: 100%; }
    .hero-links { gap: 12px; }
    .hero-points { display: grid; grid-template-columns: 1fr 1fr; }
    .section { padding: 58px 0; }
    .section-head { margin-bottom: 30px; text-align: left; }
    .info-grid, .category-grid, .dual-grid, .notice-grid, .review-grid, .contact-grid { grid-template-columns: 1fr; gap: 18px; }
    .category-card.is-wide { grid-column: auto; }
    .category-card { min-height: auto; padding: 24px; }
    .article-card { padding: 24px; }
    .page-hero { padding: 48px 0 40px; }
    .page-hero p { font-size: 16px; }
    .prose section { margin-bottom: 38px; }
    .data-table { display: block; overflow-x: auto; }
    .cta-band { padding: 28px; flex-direction: column; align-items: flex-start; }
    .cta-band .secondary-btn { width: 100%; }
    .footer-inner { width: min(calc(100% - 32px), var(--container)); padding: 48px 0 32px; }
    .footer-links { grid-template-columns: 1fr 1fr; gap: 24px; }
    .footer-risk { padding-left: 16px; padding-right: 16px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}