* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: #ffffff;
    color: #34495e;
    font-family: Arial, "Microsoft YaHei", sans-serif;
    line-height: 1.7;
    overflow-x: hidden;
    text-rendering: optimizeLegibility;
}
body.drawer-open { overflow: hidden; }
a { color: #2f83d8; }
img { max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 12000; background: #1f2d3d; color: #fff; padding: 10px 14px; border-radius: 6px; }
.skip-link:focus { top: 12px; }
.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, .drawer-logo { display: inline-flex; flex: 0 0 auto; }
.site-logo img { display: block; max-height: 44px; width: auto; }
.nav-core { display: flex; align-items: center; gap: 10px; white-space: nowrap; }
.nav-core a { color: #34495e; text-decoration: none; padding: 8px 9px; border-radius: 8px; font-size: 15px; }
.nav-core a:hover, .nav-core a.active { color: #2875c7; background: #eaf4ff; }
.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: 8px; text-decoration: none; position: relative; z-index: 2; pointer-events: auto; touch-action: manipulation; font-weight: 700; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.main-btn { color: #ffffff; background: #3f8fe5; box-shadow: 0 10px 24px rgba(63,143,229,0.22); }
.main-btn:hover { background: #2f7fd3; transform: translateY(-1px); }
.secondary-btn { color: #2875c7; background: #fff; border: 1px solid #9cc7f3; }
.secondary-btn:hover { border-color: #2875c7; transform: translateY(-1px); }
.main-btn:focus-visible, .secondary-btn:focus-visible, .text-link:focus-visible, .nav-core a:focus-visible, .drawer-nav a:focus-visible, button:focus-visible { outline: 3px solid rgba(40,117,199,.34); outline-offset: 3px; }
.menu-toggle { width: 44px; height: 44px; display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px; background: #fff; border: 1px solid #d8e4f0; border-radius: 8px; cursor: pointer; }
.menu-toggle span { width: 20px; height: 2px; background: #2875c7; border-radius: 2px; }
.drawer-overlay { position: fixed; inset: 0; z-index: 10000; background: rgba(23,40,58,.42); opacity: 0; transition: opacity .22s ease; }
.drawer-overlay.is-visible { opacity: 1; }
.drawer { position: fixed; right: 0; top: 0; bottom: 0; z-index: 10001; width: min(390px, 88vw); background: #fff; box-shadow: -18px 0 46px rgba(23,55,87,.18); transform: translateX(105%); transition: transform .24s ease; overflow-y: auto; }
.drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 72px; padding: 12px 18px; border-bottom: 1px solid #e5edf5; }
.drawer-logo img { max-height: 40px; width: auto; }
.drawer-close { width: 44px; height: 44px; border: 0; border-radius: 8px; background: #eef3f9; color: #2875c7; font-size: 30px; cursor: pointer; }
.drawer-nav { display: grid; padding: 16px 18px 28px; }
.drawer-nav a { min-height: 46px; display: flex; align-items: center; padding: 9px 12px; color: #34495e; text-decoration: none; border-bottom: 1px solid #edf2f7; }
.drawer-nav a:hover { color: #2875c7; background: #f4f7fb; }
.drawer-nav .drawer-download { color: #fff; margin-top: 18px; border-bottom: 0; justify-content: center; }
.container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.narrow { width: min(900px, calc(100% - 40px)); margin: 0 auto; }
.section { padding: 82px 0; }
.section-light { background: #f4f7fb; }
.section-soft { background: #eef3f9; }
.section-head { max-width: 760px; margin-bottom: 34px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow { margin: 0 0 10px; color: #2875c7; font-size: 14px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
h1, h2, h3, .section-title { color: #1f2d3d; line-height: 1.28; }
h1 { margin: 0 0 20px; font-size: clamp(38px, 5vw, 64px); letter-spacing: -.035em; }
h2 { margin: 0 0 16px; font-size: clamp(28px, 3vw, 40px); }
h3 { margin: 0 0 10px; font-size: 21px; }
p { margin: 0 0 16px; }
.lead { color: #526679; font-size: 18px; }
.text-muted { color: #6f7f90; }
.hero { position: relative; overflow: hidden; padding: 76px 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: 440px; height: 440px; right: -160px; top: -190px; background: rgba(63,143,229,.10); }
.hero::after { width: 280px; height: 280px; left: -120px; bottom: -190px; background: rgba(40,117,199,.07); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.08fr .92fr; gap: 56px; align-items: center; }
.hero-copy { max-width: 690px; }
.hero-copy .subtitle { color: #2875c7; font-size: clamp(21px, 2.6vw, 31px); font-weight: 700; margin-bottom: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 30px 0 22px; }
.hero-links { display: flex; flex-wrap: wrap; gap: 20px; }
.text-link { color: #2f83d8; text-decoration: none; font-weight: 700; }
.text-link:hover { text-decoration: underline; }
.hero-points { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 20px; margin-top: 28px; padding: 0; list-style: none; }
.hero-points li { position: relative; padding-left: 22px; color: #526679; }
.hero-points li::before { content: ""; position: absolute; left: 0; top: .67em; width: 9px; height: 9px; border-radius: 50%; background: #3f8fe5; }
.hero-visual { display: flex; justify-content: center; }
.hero-visual img { max-width: 100%; width: min(500px, 100%); height: auto; object-fit: contain; display: block; filter: drop-shadow(0 24px 38px rgba(43,97,153,.16)); }
.info-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.info-card, .category-card, .review-card, .faq-card, .article-card, .notice-card { background: #ffffff; border: 1px solid #d8e4f0; border-radius: 8px; box-shadow: 0 8px 24px rgba(43,97,153,0.06); }
.info-card { padding: 25px; }
.info-card .number { color: #3f8fe5; font-size: 13px; font-weight: 800; }
.category-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; }
.category-card { min-height: 210px; padding: 28px; display: flex; flex-direction: column; border-color: #b9d7f4; transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.category-card:hover { transform: translateY(-4px); border-color: #3f8fe5; box-shadow: 0 12px 28px rgba(43,97,153,.10); }
.category-card h3 { color: #2875c7; }
.category-card p { flex: 1; color: #6f7f90; }
.category-card.wide { grid-column: 1 / -1; min-height: auto; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.split.reverse .feature-image { order: 2; }
.feature-image { display: flex; justify-content: center; }
.feature-image img, .content-img { max-width: 100%; height: auto; object-fit: contain; display: block; }
.feature-image img { width: min(460px, 100%); }
.content-copy ul, .article-body ul, .article-body ol { padding-left: 22px; }
.content-copy li, .article-body li { margin-bottom: 8px; }
.two-up { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 30px; }
.article-card { padding: 30px; }
.article-card img { margin: 10px auto 24px; max-height: 250px; }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.review-card { padding: 26px; }
.review-card p { color: #526679; }
.review-card strong { color: #2875c7; }
.faq-list { display: grid; gap: 14px; }
.faq-card { padding: 24px 26px; }
.faq-card h3 { font-size: 19px; }
.safety-box { border: 1px solid #9cc7f3; background: #eaf4ff; border-radius: 10px; padding: 28px; }
.safety-box strong { color: #1f5f9d; }
.page-hero { padding: 70px 0 54px; background: linear-gradient(180deg, #f4f9ff 0%, #fff 100%); border-bottom: 1px solid #e5edf5; }
.page-hero .narrow { text-align: center; }
.page-hero h1 { font-size: clamp(36px, 4.8vw, 58px); }
.breadcrumb { margin-bottom: 18px; color: #6f7f90; font-size: 14px; }
.breadcrumb a { color: #2f83d8; text-decoration: none; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 290px; gap: 46px; align-items: start; }
.article-body { min-width: 0; }
.article-body section { scroll-margin-top: 94px; margin-bottom: 46px; }
.article-body h2 { margin-top: 0; font-size: 30px; }
.article-body h3 { margin-top: 28px; }
.article-body p { color: #435a70; }
.sidebar { position: sticky; top: 96px; }
.sidebar-box { padding: 22px; background: #f4f7fb; border: 1px solid #d8e4f0; border-radius: 8px; }
.sidebar-box h2 { font-size: 18px; }
.sidebar-box a { display: block; padding: 8px 0; color: #526679; text-decoration: none; border-bottom: 1px solid #e1e9f2; }
.sidebar-box a:last-child { border-bottom: 0; }
.sidebar-box a:hover { color: #2875c7; }
.steps { counter-reset: step; display: grid; gap: 18px; }
.step { position: relative; padding: 24px 24px 24px 72px; background: #fff; border: 1px solid #d8e4f0; border-radius: 8px; }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 22px; top: 23px; width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: #3f8fe5; font-weight: 800; }
.term-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 20px; }
.term-card { padding: 24px; background: #fff; border: 1px solid #d8e4f0; border-radius: 8px; }
.notice-list { display: grid; gap: 18px; }
.notice-card { padding: 25px; }
.notice-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 10px; color: #6f7f90; font-size: 14px; }
.tag { display: inline-flex; align-items: center; min-height: 26px; padding: 0 9px; border-radius: 999px; color: #2875c7; background: #eaf4ff; font-size: 13px; font-weight: 700; }
.contact-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 24px; }
.contact-card { padding: 28px; border: 1px solid #d8e4f0; border-radius: 8px; background: #fff; }
.site-footer { background: #438ddf; color: #ffffff; padding: 64px 0 22px; }
.footer-inner { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.footer-brand { max-width: 600px; margin-bottom: 40px; }
.footer-brand img { display: block; max-height: 44px; width: auto; margin-bottom: 18px; filter: brightness(0) invert(1); }
.footer-brand p { color: rgba(255,255,255,.88); }
.footer-links { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 34px; padding-bottom: 36px; }
.footer-links h2 { color: #fff; font-size: 18px; }
.footer-links a { display: block; color: rgba(255,255,255,.88); text-decoration: none; padding: 5px 0; }
.footer-links a:hover { color: #fff; text-decoration: underline; }
.footer-risk { padding: 22px 0; border-top: 1px solid rgba(255,255,255,.22); border-bottom: 1px solid rgba(255,255,255,.22); color: rgba(255,255,255,.9); }
.footer-bottom { padding-top: 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, 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: 64px; padding: 0 16px; gap: 10px; }
    .site-logo img { max-height: 36px; max-width: 145px; }
    .header-download { min-height: 44px; padding: 0 15px; font-size: 14px; }
    .section { padding: 62px 0; }
    .container, .narrow, .footer-inner { width: min(100% - 32px, 1160px); }
    .hero { padding: 54px 0; }
    .hero-grid, .split { grid-template-columns: 1fr; gap: 38px; }
    .hero-copy { text-align: center; margin: 0 auto; }
    .hero-actions, .hero-links { justify-content: center; }
    .hero-points { text-align: left; }
    .hero-visual { order: 2; }
    .split.reverse .feature-image { order: 0; }
    .category-grid { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 22px; }
    .category-card.wide { grid-column: 1 / -1; }
    .two-up, .term-grid, .contact-grid { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 560px) {
    .header-actions { gap: 7px; }
    .site-logo img { max-width: 118px; max-height: 32px; }
    .header-download { padding: 0 12px; }
    .menu-toggle { width: 44px; min-width: 44px; }
    .container, .narrow, .footer-inner { width: min(100% - 32px, 1160px); }
    h1 { font-size: 38px; }
    .hero-copy .subtitle { font-size: 22px; }
    .hero-points, .info-grid, .category-grid, .review-grid, .footer-links { grid-template-columns: 1fr; }
    .category-card.wide { grid-column: auto; }
    .hero-actions .main-btn, .hero-actions .secondary-btn { width: 100%; }
    .hero-links { display: grid; gap: 10px; }
    .article-card, .info-card, .category-card, .review-card, .faq-card, .notice-card { padding: 22px; }
    .page-hero { padding: 54px 0 42px; }
    .page-hero h1 { font-size: 38px; }
}