:root {
    --brand: #3f8fe5;
    --brand-deep: #2875c7;
    --brand-soft: #eaf4ff;
    --text: #34495e;
    --title: #1f2d3d;
    --muted: #6f7f90;
    --line: #d8e4f0;
    --light: #f4f7fb;
    --light-2: #eef3f9;
    --shadow: 0 12px 32px rgba(43,97,153,0.10);
}
* { 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;
}
body.drawer-open { overflow: hidden; }
a { color: #2f83d8; }
img { max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible { outline: 3px solid rgba(40,117,199,.35); outline-offset: 3px; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 11000; background: #fff; color: var(--brand-deep); padding: 10px 14px; border-radius: 8px; box-shadow: var(--shadow); }
.skip-link:focus { top: 12px; }
.container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.narrow { width: min(860px, calc(100% - 40px)); margin: 0 auto; }
.site-header {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 9999;
    background: rgba(255,255,255,0.94);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid #e5edf5;
    box-shadow: 0 6px 20px rgba(43,97,153,0.08);
}
.header-inner { max-width: 1240px; 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; align-items: center; flex: 0 0 auto; }
.site-logo img, .footer-logo img { display: block; max-height: 44px; width: auto; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 8px; flex: 1 1 auto; }
.nav-core a { color: var(--text); text-decoration: none; padding: 8px 10px; border-radius: 8px; white-space: nowrap; font-size: 15px; }
.nav-core a:hover, .nav-core a.active { color: var(--brand-deep); background: var(--brand-soft); }
.header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.main-btn, .secondary-btn, .outline-btn {
    display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 22px; border-radius: 8px; text-decoration: none; font-weight: 700; position: relative; z-index: 2; pointer-events: auto; touch-action: manipulation; transition: .2s ease;
}
.main-btn { color: #fff; background: var(--brand); box-shadow: 0 10px 24px rgba(63,143,229,0.22); }
.main-btn:hover { background: #2f7fd3; transform: translateY(-1px); }
.secondary-btn { color: var(--brand-deep); background: var(--brand-soft); }
.secondary-btn:hover { background: #dceeff; transform: translateY(-1px); }
.outline-btn { color: var(--brand-deep); background: #fff; border: 1px solid #a9cbea; }
.outline-btn:hover { border-color: var(--brand-deep); transform: translateY(-1px); }
.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; }
.menu-toggle span { display: block; width: 20px; height: 2px; background: var(--brand-deep); border-radius: 2px; }
.drawer-overlay { position: fixed; inset: 0; z-index: 10000; background: rgba(20,45,70,.35); opacity: 0; transition: opacity .2s ease; }
.drawer-overlay.visible { opacity: 1; }
.site-drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(390px, 88vw); z-index: 10001; background: #fff; transform: translateX(102%); transition: transform .24s ease; box-shadow: -18px 0 42px rgba(31,45,61,.18); overflow-y: auto; }
.site-drawer.open { transform: translateX(0); }
.drawer-head { min-height: 72px; padding: 12px 18px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid #e5edf5; }
.drawer-close { width: 44px; height: 44px; border: 0; border-radius: 8px; background: var(--light); color: var(--title); font-size: 30px; line-height: 1; cursor: pointer; }
.drawer-nav { padding: 14px 18px 30px; display: grid; gap: 4px; }
.drawer-nav a { min-height: 46px; display: flex; align-items: center; padding: 0 14px; color: var(--text); text-decoration: none; border-radius: 8px; }
.drawer-nav a:hover, .drawer-nav a.active { background: var(--brand-soft); color: var(--brand-deep); }
.drawer-nav .drawer-download { margin-top: 10px; justify-content: center; background: var(--brand); color: #fff; font-weight: 700; }
.hero { position: relative; overflow: hidden; padding: 76px 0 68px; background: linear-gradient(180deg,#fff 0%,#f9fcff 100%); }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; background: rgba(63,143,229,.08); pointer-events: none; }
.hero::before { width: 360px; height: 360px; right: -140px; top: -120px; }
.hero::after { width: 220px; height: 220px; left: -100px; bottom: -100px; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; gap: 70px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; min-height: 32px; padding: 0 12px; background: var(--brand-soft); color: var(--brand-deep); border-radius: 999px; font-weight: 700; font-size: 14px; letter-spacing: .02em; }
h1, h2, h3, .section-title { color: var(--title); line-height: 1.28; }
h1 { font-size: clamp(38px, 5vw, 62px); margin: 18px 0 16px; letter-spacing: -.035em; }
.hero-subtitle { font-size: clamp(20px, 2.4vw, 29px); color: var(--brand-deep); margin: 0 0 18px; font-weight: 700; line-height: 1.45; }
.hero-copy { font-size: 17px; color: var(--muted); max-width: 720px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-links { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 18px; }
.hero-links a { text-decoration: none; font-weight: 700; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.hero-points span { padding: 7px 11px; background: #fff; border: 1px solid var(--line); border-radius: 999px; color: #587087; font-size: 14px; }
.hero-visual { min-width: 0; }
.hero-visual img { width: 100%; max-height: 620px; object-fit: contain; display: block; filter: drop-shadow(0 24px 30px rgba(43,97,153,.16)); }
.section { padding: 78px 0; }
.section-light { background: var(--light); }
.section-soft { background: var(--light-2); }
.section-head { max-width: 760px; margin-bottom: 34px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-kicker { color: var(--brand-deep); font-weight: 700; margin-bottom: 8px; }
.section-title { font-size: clamp(28px, 3.5vw, 42px); margin: 0 0 14px; }
.section-lead { color: var(--muted); font-size: 17px; margin: 0; }
.info-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }
.info-card, .category-card, .review-card, .faq-card, .content-card, .notice-card { background: #fff; border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 8px 24px rgba(43,97,153,0.06); }
.info-card { padding: 24px; }
.info-card h3 { margin: 0 0 8px; font-size: 19px; }
.info-card p { margin: 0; color: var(--muted); }
.category-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 30px; }
.category-card { padding: 28px; display: flex; min-height: 190px; flex-direction: column; transition: .2s ease; border-color: #b9d4ee; }
.category-card:hover { transform: translateY(-4px); border-color: var(--brand-deep); box-shadow: 0 14px 32px rgba(43,97,153,.10); }
.category-card h3 { margin: 0 0 10px; color: var(--brand-deep); }
.category-card p { margin: 0 0 18px; color: var(--muted); flex: 1 1 auto; }
.category-card a { text-decoration: none; font-weight: 700; }
.category-card.wide { grid-column: 1 / -1; min-height: 150px; }
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 68px; align-items: center; }
.feature.reverse .feature-image { order: 2; }
.feature-image { min-width: 0; }
.feature-image img, .content-img { width: 100%; max-height: 480px; height: auto; object-fit: contain; display: block; }
.feature-copy h2 { font-size: clamp(28px, 3vw, 40px); margin: 0 0 16px; }
.feature-copy p { color: var(--muted); margin: 0 0 18px; }
.feature-copy ul, .article-body ul, .article-body ol { padding-left: 1.2em; }
.feature-copy li, .article-body li { margin: 7px 0; }
.dual-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 30px; }
.content-card { padding: 30px; }
.content-card img { margin-bottom: 24px; }
.content-card h3 { font-size: 26px; margin: 0 0 12px; }
.content-card p { color: var(--muted); }
.notice-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.notice-card { padding: 24px; }
.notice-type { color: var(--brand-deep); font-size: 13px; font-weight: 700; }
.notice-card h3 { margin: 8px 0 10px; font-size: 20px; }
.notice-card p { margin: 0; color: var(--muted); }
.review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.review-card { padding: 24px; }
.review-card p { margin: 0 0 14px; color: #4c6378; }
.review-card strong { color: var(--brand-deep); font-size: 14px; }
.faq-list { display: grid; gap: 14px; }
.faq-card { padding: 0; overflow: hidden; }
.faq-card details { padding: 20px 22px; }
.faq-card summary { cursor: pointer; color: var(--title); font-weight: 700; }
.faq-card p { margin: 14px 0 0; color: var(--muted); }
.risk-panel { padding: 30px; background: #eef6ff; border: 1px solid #b9d4ee; border-radius: 8px; }
.risk-panel h2, .risk-panel h3 { margin-top: 0; }
.page-hero { padding: 62px 0 54px; background: linear-gradient(180deg,#f7fbff,#fff); border-bottom: 1px solid #e5edf5; }
.page-hero h1 { font-size: clamp(34px, 4vw, 52px); margin-top: 12px; }
.page-hero p { max-width: 800px; color: var(--muted); font-size: 18px; }
.breadcrumb { font-size: 14px; color: #7d8c9c; }
.breadcrumb a { text-decoration: none; }
.article-section { padding: 64px 0 78px; }
.article-body { font-size: 17px; }
.article-body h2 { margin-top: 46px; font-size: 30px; }
.article-body h3 { margin-top: 30px; font-size: 23px; }
.article-body p { margin: 14px 0; }
.article-body .lead { font-size: 19px; color: #526b82; }
.step-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; margin: 26px 0; }
.step-card { border: 1px solid var(--line); border-radius: 8px; padding: 24px; background: #fff; }
.step-card .step { width: 34px; height: 34px; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; background: var(--brand-soft); color: var(--brand-deep); font-weight: 700; }
.step-card h3 { margin: 12px 0 8px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; margin: 22px 0; }
table { width: 100%; border-collapse: collapse; min-width: 680px; }
th, td { padding: 14px 16px; border-bottom: 1px solid #e7eef5; text-align: left; vertical-align: top; }
th { background: var(--light); color: var(--title); }
.callout { margin: 24px 0; padding: 20px 22px; border-left: 4px solid var(--brand); background: #f3f8fe; border-radius: 0 8px 8px 0; }
.cta-band { padding: 38px; border-radius: 10px; background: #eaf4ff; display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: 46px; }
.cta-band h2 { margin: 0 0 6px; font-size: 26px; }
.cta-band p { margin: 0; color: var(--muted); }
.site-footer { background: #438ddf; color: #fff; padding: 58px 0 22px; }
.footer-grid { display: grid; grid-template-columns: 1.7fr repeat(3,1fr); gap: 38px; }
.footer-logo { display: inline-flex; padding: 8px 12px; background: #fff; border-radius: 8px; margin-bottom: 12px; }
.footer-brand p { margin: 0; max-width: 460px; color: rgba(255,255,255,.9); }
.site-footer h2 { color: #fff; font-size: 17px; margin: 0 0 12px; }
.site-footer a { display: block; color: rgba(255,255,255,.92); text-decoration: none; margin: 7px 0; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.footer-risk { border-top: 1px solid rgba(255,255,255,.28); margin-top: 36px; padding-top: 22px; color: rgba(255,255,255,.92); }
.footer-bottom { margin-top: 18px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.20); color: rgba(255,255,255,.78); font-size: 14px; }
@media (max-width: 1060px) {
    .nav-core { gap: 2px; }
    .nav-core a { padding: 7px 7px; font-size: 14px; }
    .info-grid { grid-template-columns: repeat(2,1fr); }
    .review-grid { grid-template-columns: repeat(2,1fr); }
    .footer-grid { grid-template-columns: 1.5fr repeat(3,1fr); }
}
@media (max-width: 860px) {
    .nav-core { display: none; }
    .hero { padding-top: 54px; }
    .hero-grid, .feature { grid-template-columns: 1fr; gap: 34px; }
    .hero-visual { max-width: 620px; margin: 0 auto; }
    .feature.reverse .feature-image { order: 0; }
    .category-grid { grid-template-columns: repeat(2,1fr); gap: 22px; }
    .category-card.wide { grid-column: 1 / -1; }
    .notice-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
    .container, .narrow { width: min(100% - 32px, 1160px); }
    .header-inner { min-height: 62px; padding: 0 12px; gap: 8px; }
    .site-logo img { max-width: 128px; max-height: 34px; }
    .header-actions { gap: 6px; }
    .header-download { min-height: 44px; padding: 0 14px; font-size: 14px; }
    .menu-toggle { width: 44px; height: 44px; }
    .hero { padding: 44px 0 52px; }
    h1 { font-size: 38px; }
    .hero-subtitle { font-size: 21px; }
    .hero-copy, .section-lead, .article-body { font-size: 16px; }
    .section { padding: 58px 0; }
    .info-grid, .category-grid, .dual-grid, .notice-grid, .review-grid, .step-grid { grid-template-columns: 1fr; }
    .category-card.wide { grid-column: auto; }
    .category-card { min-height: 0; }
    .cta-band { padding: 26px 22px; align-items: flex-start; flex-direction: column; }
    .footer-grid { grid-template-columns: 1fr; gap: 26px; }
    .page-hero { padding: 44px 0 38px; }
    .article-section { padding: 48px 0 60px; }
}
@media (max-width: 390px) {
    .header-download { padding: 0 11px; }
    .site-logo img { max-width: 112px; }
}