:root {
    --blue: #3f8fe5;
    --blue-dark: #2875c7;
    --blue-soft: #eaf4ff;
    --bg-soft: #f4f7fb;
    --bg-alt: #eef3f9;
    --title: #1f2d3d;
    --text: #34495e;
    --muted: #6f7f90;
    --line: #d8e4f0;
    --line-soft: #e5edf5;
    --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;
    -webkit-font-smoothing: antialiased;
}
body.drawer-open { overflow: hidden; }
a { color: var(--blue-dark); }
a:focus-visible, button:focus-visible { outline: 3px solid rgba(63,143,229,.42); outline-offset: 3px; }
img { max-width: 100%; height: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 12000; background: #fff; padding: 10px 16px; border-radius: 8px; box-shadow: var(--shadow); }
.skip-link:focus { top: 10px; }
.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 var(--line-soft);
    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 { display: block; max-height: 44px; width: auto; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 8px; flex: 1 1 auto; white-space: nowrap; }
.nav-core a { color: var(--text); text-decoration: none; padding: 8px 10px; border-radius: 8px; font-size: 15px; }
.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, .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; transition: transform .18s ease, background .18s ease, border-color .18s ease, box-shadow .18s ease;
    position: relative; z-index: 2; pointer-events: auto; touch-action: manipulation; border: 1px solid transparent;
}
.main-btn { color: #fff; background: var(--blue); box-shadow: 0 10px 24px rgba(63,143,229,0.22); }
.main-btn:hover { color: #fff; background: #2f7fd3; transform: translateY(-1px); }
.secondary-btn { color: var(--blue-dark); background: var(--blue-soft); }
.secondary-btn:hover { background: #dceeff; transform: translateY(-1px); }
.outline-btn { color: var(--blue-dark); background: #fff; border-color: var(--line); }
.outline-btn:hover { border-color: var(--blue); transform: translateY(-1px); }
.menu-toggle { width: 44px; height: 44px; border: 1px solid var(--line); background: #fff; border-radius: 8px; display: grid; place-content: center; gap: 4px; cursor: pointer; }
.menu-toggle span { display: block; width: 20px; height: 2px; background: var(--title); border-radius: 9px; }
.drawer-overlay { position: fixed; inset: 0; z-index: 10000; background: rgba(23,45,68,.42); opacity: 0; transition: opacity .22s ease; }
.drawer-overlay.visible { opacity: 1; }
.site-drawer { position: fixed; top: 0; right: 0; z-index: 10001; width: min(390px, 88vw); height: 100dvh; background: #fff; transform: translateX(102%); transition: transform .24s ease; box-shadow: -18px 0 46px rgba(27,61,94,.18); padding: 20px; overflow-y: auto; }
.site-drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding-bottom: 16px; border-bottom: 1px solid var(--line-soft); }
.drawer-close { width: 44px; height: 44px; border: 0; background: var(--bg-soft); color: var(--title); border-radius: 8px; font-size: 28px; cursor: pointer; }
.drawer-nav { display: grid; gap: 4px; padding: 18px 0; }
.drawer-nav a { color: var(--text); text-decoration: none; padding: 11px 12px; border-radius: 8px; }
.drawer-nav a:hover, .drawer-nav a.active { color: var(--blue-dark); background: var(--blue-soft); }
.drawer-download { width: 100%; }
.container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.section { padding: 82px 0; }
.section-light { background: var(--bg-soft); }
.section-alt { background: var(--bg-alt); }
.section-heading { max-width: 760px; margin: 0 auto 38px; text-align: center; }
.eyebrow { display: inline-block; margin-bottom: 10px; color: var(--blue-dark); font-size: 14px; font-weight: 700; letter-spacing: .08em; }
h1, h2, h3, .section-title { color: var(--title); line-height: 1.28; }
h1 { font-size: clamp(38px, 5vw, 62px); margin: 0 0 18px; letter-spacing: -.03em; }
h2 { font-size: clamp(28px, 3.4vw, 42px); margin: 0 0 16px; }
h3 { font-size: 21px; margin: 0 0 10px; }
p { margin: 0 0 16px; }
.lead { color: var(--muted); font-size: 18px; }
.muted { color: var(--muted); }
.hero { position: relative; overflow: hidden; padding: 74px 0 66px; background: linear-gradient(180deg, #fff 0%, #f8fbff 100%); }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; pointer-events: none; }
.hero::before { width: 430px; height: 430px; right: -180px; top: -180px; background: rgba(63,143,229,.10); }
.hero::after { width: 260px; height: 260px; left: -130px; bottom: -100px; background: rgba(63,143,229,.07); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 62px; }
.hero-copy .lead { max-width: 700px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 22px; }
.hero-links { display: flex; flex-wrap: wrap; gap: 18px; margin-bottom: 24px; }
.hero-links a { text-decoration: none; font-weight: 700; }
.hero-points { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 18px; color: var(--muted); font-size: 14px; }
.hero-points span::before { content: "✓"; color: var(--blue); font-weight: 800; margin-right: 8px; }
.hero-visual { display: flex; justify-content: center; align-items: center; }
.hero-visual img { max-width: 100%; max-height: 560px; object-fit: contain; display: block; filter: drop-shadow(0 24px 35px rgba(43,97,153,.16)); }
.quick-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.info-card, .category-card, .review-card, .faq-card, .content-card { background: #fff; border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 8px 24px rgba(43,97,153,0.06); }
.info-card { padding: 24px; }
.info-card h3 { color: var(--blue-dark); }
.category-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; }
.category-card { min-height: 192px; padding: 26px; 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 h3 { color: var(--blue-dark); }
.category-card p { color: var(--muted); flex: 1; }
.category-card a { font-weight: 700; text-decoration: none; }
.category-card.full { grid-column: 1 / -1; min-height: 150px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split.reverse .feature-image { order: 2; }
.feature-image { display: flex; align-items: center; justify-content: center; min-height: 320px; padding: 26px; background: #fff; border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 14px 34px rgba(43,97,153,.08); }
.feature-image img, .content-img { max-width: 100%; height: auto; object-fit: contain; display: block; }
.copy-block p { color: var(--muted); }
.copy-block .button-row { margin-top: 24px; }
.dual-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px; }
.content-card { padding: 30px; }
.content-card .feature-image { margin-bottom: 22px; min-height: 250px; box-shadow: none; background: var(--bg-soft); }
.notice-list, .article-list, .steps, .check-list { margin: 18px 0 0; padding: 0; list-style: none; }
.notice-list li, .article-list li, .steps li, .check-list li { position: relative; padding: 12px 0 12px 28px; border-bottom: 1px solid var(--line-soft); }
.notice-list li::before, .check-list li::before { content: "•"; position: absolute; left: 8px; color: var(--blue); font-weight: 900; }
.steps { counter-reset: step; }
.steps li { padding-left: 48px; }
.steps li::before { counter-increment: step; content: counter(step); position: absolute; left: 0; top: 9px; width: 30px; height: 30px; border-radius: 50%; background: var(--blue-soft); color: var(--blue-dark); display: grid; place-items: center; font-weight: 800; }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.review-card { padding: 24px; }
.review-card strong { color: var(--blue-dark); display: block; margin-top: 12px; }
.faq-list { display: grid; gap: 14px; max-width: 900px; margin: 0 auto; }
.faq-card { overflow: hidden; }
.faq-question { width: 100%; min-height: 58px; border: 0; background: #fff; color: var(--title); text-align: left; padding: 16px 56px 16px 20px; font-size: 17px; 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: 26px; }
.faq-question[aria-expanded="true"]::after { content: "−"; }
.faq-answer { padding: 0 20px 20px; color: var(--muted); }
.risk-box { background: #f8fbff; border: 1px solid #bdd9f5; border-left: 4px solid var(--blue); border-radius: 8px; padding: 22px 24px; }
.page-hero { padding: 66px 0 54px; background: linear-gradient(180deg, #f8fbff 0%, #fff 100%); border-bottom: 1px solid var(--line-soft); }
.page-hero .container { max-width: 920px; }
.breadcrumbs { font-size: 14px; color: var(--muted); margin-bottom: 18px; }
.breadcrumbs a { text-decoration: none; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 42px; align-items: start; }
.article { min-width: 0; }
.article section { scroll-margin-top: 96px; margin-bottom: 46px; }
.article h2 { font-size: 30px; margin-top: 0; padding-bottom: 10px; border-bottom: 1px solid var(--line-soft); }
.article h3 { margin-top: 26px; }
.article p, .article li { color: #465b6f; }
.article ul, .article ol { padding-left: 24px; }
.sidebar { position: sticky; top: 96px; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 10px; padding: 20px; }
.sidebar h2 { font-size: 18px; margin-bottom: 12px; }
.sidebar a { display: block; padding: 8px 0; text-decoration: none; border-bottom: 1px solid var(--line-soft); }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0; }
.tag { display: inline-flex; align-items: center; min-height: 32px; padding: 0 12px; border-radius: 999px; background: var(--blue-soft); color: var(--blue-dark); font-size: 14px; font-weight: 700; }
.news-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.news-item { padding: 26px; background: #fff; border: 1px solid var(--line); border-radius: 10px; }
.news-item .news-type { color: var(--blue-dark); font-size: 14px; font-weight: 700; }
.contact-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.contact-card { padding: 28px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.site-footer { background: #438ddf; color: #fff; }
.footer-inner { width: min(1160px, calc(100% - 40px)); margin: 0 auto; padding: 58px 0 42px; display: grid; grid-template-columns: 1.1fr 1.9fr; gap: 70px; }
.footer-brand p { color: rgba(255,255,255,.88); max-width: 440px; }
.footer-logo { background: #fff; padding: 5px 10px; border-radius: 8px; margin-bottom: 18px; }
.footer-links { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.footer-links h2 { color: #fff; font-size: 17px; margin-bottom: 12px; }
.footer-links a { color: rgba(255,255,255,.9); text-decoration: none; display: block; padding: 5px 0; }
.footer-links a:hover { color: #fff; text-decoration: underline; }
.footer-risk { width: min(1160px, calc(100% - 40px)); margin: 0 auto; padding: 20px 0; border-top: 1px solid rgba(255,255,255,.25); color: rgba(255,255,255,.88); font-size: 14px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.18); padding: 18px 20px; text-align: center; color: rgba(255,255,255,.82); font-size: 14px; }
@media (max-width: 1050px) {
    .nav-core { display: none; }
    .quick-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .review-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .article-layout { grid-template-columns: 1fr; }
    .sidebar { position: static; }
}
@media (max-width: 820px) {
    .header-inner { min-height: 62px; padding: 0 14px; gap: 10px; }
    .site-logo img { max-height: 36px; max-width: 142px; }
    .header-download { min-height: 44px; padding: 0 14px; font-size: 14px; }
    .hero { padding: 54px 0 46px; }
    .hero-grid, .split { grid-template-columns: 1fr; gap: 36px; }
    .split.reverse .feature-image { order: 0; }
    .hero-copy { text-align: center; }
    .hero-copy .lead { margin-left: auto; margin-right: auto; }
    .hero-actions, .hero-links { justify-content: center; }
    .hero-points { max-width: 560px; margin: 0 auto; text-align: left; }
    .hero-visual img { max-height: 460px; }
    .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
    .category-card.full { grid-column: 1 / -1; }
    .dual-grid, .news-grid, .contact-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 600px) {
    .container { width: min(100% - 32px, 1160px); }
    .section { padding: 58px 0; }
    .header-actions { gap: 6px; }
    .header-download { padding: 0 11px; }
    .hero-points, .quick-grid, .category-grid, .review-grid { grid-template-columns: 1fr; }
    .category-card.full { grid-column: auto; min-height: 192px; }
    .hero-actions .main-btn, .hero-actions .secondary-btn { width: 100%; }
    .hero-links { gap: 10px 16px; }
    .feature-image { min-height: 220px; padding: 18px; }
    .content-card { padding: 22px; }
    .footer-links { grid-template-columns: 1fr 1fr; gap: 22px; }
    .footer-inner, .footer-risk { width: min(100% - 32px, 1160px); }
}
@media (max-width: 390px) {
    .site-logo img { max-width: 118px; }
    .header-download { font-size: 13px; padding: 0 9px; }
    .menu-toggle { width: 44px; }
    .footer-links { grid-template-columns: 1fr; }
}