:root {
    --blue: #3f8fe5;
    --blue-deep: #2875c7;
    --blue-soft: #eaf4ff;
    --ink: #1f2d3d;
    --text: #34495e;
    --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: #fff; 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%; height: auto; }
button, a { -webkit-tap-highlight-color: transparent; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 20000; background: #fff; color: var(--ink); 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: 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; flex: 0 0 auto; align-items: center; }
.site-logo img { display: block; max-height: 44px; width: auto; }
.nav-core { display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.nav-core a { color: var(--text); text-decoration: none; padding: 8px 9px; border-radius: 8px; font-size: 15px; }
.nav-core a:hover, .nav-core a.active { color: var(--blue-deep); 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: 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(--blue); box-shadow: 0 10px 24px rgba(63,143,229,.22); }
.main-btn:hover { color: #fff; background: #2f7fd3; transform: translateY(-1px); }
.secondary-btn { color: var(--blue-deep); background: #fff; border: 1px solid #bcd6ef; }
.secondary-btn:hover { 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 { outline: 3px solid rgba(63,143,229,.35); outline-offset: 3px; }
.menu-toggle { width: 46px; height: 46px; border: 1px solid var(--line); border-radius: 10px; background: #fff; display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px; cursor: pointer; }
.menu-toggle span { width: 21px; height: 2px; border-radius: 9px; background: var(--ink); }
.drawer-overlay { position: fixed; inset: 0; z-index: 10000; background: rgba(22,40,61,.44); opacity: 0; visibility: hidden; transition: .22s ease; }
.site-drawer { position: fixed; top: 0; right: 0; z-index: 10001; width: min(390px, 90vw); height: 100vh; padding: 20px; background: #fff; transform: translateX(104%); transition: .26s ease; box-shadow: -18px 0 50px rgba(22,52,82,.18); overflow-y: auto; }
.drawer-open .drawer-overlay { opacity: 1; visibility: visible; }
.drawer-open .site-drawer { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid #e5edf5; }
.drawer-close { width: 44px; height: 44px; border: 0; border-radius: 10px; background: var(--light); color: var(--ink); font-size: 28px; cursor: pointer; }
.drawer-nav { display: grid; margin: 12px 0 20px; }
.drawer-nav a { color: var(--text); text-decoration: none; padding: 12px 10px; border-bottom: 1px solid #edf2f7; border-radius: 8px; }
.drawer-nav a:hover { color: var(--blue-deep); background: var(--blue-soft); }
.drawer-download { width: 100%; }
main { display: block; }
.container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.section { padding: 84px 0; }
.section-sm { padding: 58px 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; }
.eyebrow { display: inline-block; margin-bottom: 10px; color: var(--blue-deep); font-size: 14px; font-weight: 700; letter-spacing: .08em; }
h1, h2, h3, .section-title { color: var(--ink); line-height: 1.28; margin-top: 0; }
h1 { font-size: clamp(38px, 5.4vw, 66px); letter-spacing: -.03em; }
h2 { font-size: clamp(28px, 3.4vw, 42px); }
h3 { font-size: 21px; }
p { margin: 0 0 16px; }
.lead { font-size: 19px; color: var(--muted); }
.hero { position: relative; overflow: hidden; padding: 80px 0 70px; background: linear-gradient(180deg, #fff 0%, #f7fbff 100%); }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 999px; pointer-events: none; }
.hero::before { width: 440px; height: 440px; right: -160px; top: -200px; background: rgba(63,143,229,.09); }
.hero::after { width: 260px; height: 260px; left: -150px; bottom: -120px; background: rgba(63,143,229,.06); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 60px; }
.hero-copy { max-width: 650px; }
.hero-subtitle { font-size: clamp(21px, 2.2vw, 30px); color: var(--blue-deep); font-weight: 700; margin: -10px 0 20px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 22px; }
.hero-links { display: flex; flex-wrap: wrap; gap: 12px 22px; font-size: 15px; }
.hero-points { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px 18px; margin: 28px 0 0; padding: 0; list-style: none; }
.hero-points li { position: relative; padding-left: 22px; color: var(--text); }
.hero-points li::before { content: ""; position: absolute; left: 0; top: .72em; width: 8px; height: 8px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 5px var(--blue-soft); }
.hero-visual { display: flex; align-items: center; justify-content: center; min-height: 520px; }
.hero-visual img { display: block; max-width: 100%; max-height: 560px; object-fit: contain; filter: drop-shadow(0 30px 42px rgba(35,91,145,.16)); }
.info-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.info-card, .category-card, .review-card, .faq-card, .content-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: 26px; }
.info-card .number { display: inline-flex; width: 36px; height: 36px; align-items: center; justify-content: center; border-radius: 10px; background: var(--blue-soft); color: var(--blue-deep); font-weight: 700; margin-bottom: 15px; }
.category-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 30px; }
.category-card { min-height: 200px; padding: 28px; display: flex; flex-direction: column; transition: .2s ease; }
.category-card:last-child { grid-column: 1 / -1; min-height: 150px; }
.category-card:hover { border-color: var(--blue); transform: translateY(-4px); }
.category-card p { color: var(--muted); flex: 1; }
.text-link { color: #2f83d8; font-weight: 700; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.split { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 64px; }
.split.reverse .feature-image { order: 2; }
.feature-image { min-height: 380px; display: flex; align-items: center; justify-content: center; }
.feature-image img, .content-img { width: 100%; max-height: 430px; object-fit: contain; display: block; }
.feature-copy ul, .check-list { padding-left: 0; list-style: none; }
.feature-copy li, .check-list li { position: relative; padding-left: 26px; margin: 10px 0; }
.feature-copy li::before, .check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--blue-deep); font-weight: 700; }
.dual-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 28px; }
.content-card { padding: 32px; }
.content-card img { width: 100%; height: 260px; object-fit: contain; margin-bottom: 22px; }
.news-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 22px; }
.notice-card { padding: 26px; }
.notice-card .tag { display: inline-block; padding: 4px 10px; border-radius: 99px; background: var(--blue-soft); color: var(--blue-deep); font-size: 13px; font-weight: 700; margin-bottom: 12px; }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; }
.review-card { padding: 26px; }
.review-card p { color: var(--text); }
.review-card .review-meta { color: var(--muted); font-size: 14px; margin: 0; }
.faq-list { display: grid; gap: 14px; }
.faq-card { padding: 0; overflow: hidden; }
.faq-card details { padding: 20px 24px; }
.faq-card summary { cursor: pointer; color: var(--ink); font-weight: 700; }
.faq-card details p { margin: 14px 0 0; color: var(--muted); }
.risk-panel { padding: 34px; border: 1px solid #bcd6ef; border-radius: 12px; background: #f7fbff; }
.page-hero { padding: 74px 0 60px; background: linear-gradient(180deg, #f8fbff 0%, #fff 100%); border-bottom: 1px solid #e5edf5; }
.page-hero .container { max-width: 900px; }
.page-hero h1 { font-size: clamp(36px, 4.5vw, 56px); }
.breadcrumbs { margin-bottom: 16px; color: var(--muted); font-size: 14px; }
.breadcrumbs a { color: var(--blue-deep); text-decoration: none; }
.article { width: min(900px, calc(100% - 40px)); margin: 0 auto; padding: 66px 0 86px; }
.article h2 { margin-top: 48px; font-size: 30px; }
.article h3 { margin-top: 30px; }
.article p, .article li { font-size: 17px; }
.article ul, .article ol { padding-left: 24px; }
.article .callout { margin: 28px 0; padding: 24px 26px; border-left: 4px solid var(--blue); background: var(--blue-soft); border-radius: 0 10px 10px 0; }
.article .danger { border-left-color: #d66a6a; background: #fff5f5; }
.steps { display: grid; gap: 18px; margin: 28px 0; }
.step-card { padding: 24px; }
.step-card strong { display: block; color: var(--ink); margin-bottom: 6px; }
.qa-list { display: grid; gap: 18px; }
.qa-list .faq-card details { padding: 24px 26px; }
.cta-band { padding: 40px; border-radius: 14px; background: var(--blue); color: #fff; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.cta-band h2, .cta-band p { color: #fff; margin-bottom: 8px; }
.cta-band .secondary-btn { flex: 0 0 auto; }
.site-footer { background: #438ddf; color: #fff; }
.footer-inner { width: min(1160px, calc(100% - 40px)); margin: 0 auto; padding: 64px 0 36px; display: grid; grid-template-columns: 1.1fr 1.9fr; gap: 70px; }
.footer-brand img { max-height: 48px; width: auto; filter: brightness(0) invert(1); margin-bottom: 18px; }
.footer-brand p { color: rgba(255,255,255,.86); }
.footer-links { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 30px; }
.footer-links h2 { color: #fff; font-size: 17px; margin-bottom: 14px; }
.footer-links a { display: block; color: rgba(255,255,255,.88); text-decoration: none; padding: 4px 0; }
.footer-links a:hover { color: #fff; text-decoration: underline; }
.footer-risk { width: min(1160px, calc(100% - 40px)); margin: 0 auto; padding: 22px 0; border-top: 1px solid rgba(255,255,255,.24); color: rgba(255,255,255,.84); }
.footer-bottom { padding: 20px; text-align: center; border-top: 1px solid rgba(255,255,255,.18); color: rgba(255,255,255,.78); }
@media (max-width: 1050px) {
    .nav-core { display: none; }
    .info-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .review-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 860px) {
    .section { padding: 68px 0; }
    .hero { padding: 58px 0 48px; }
    .hero-grid, .split { grid-template-columns: 1fr; gap: 34px; }
    .hero-copy { max-width: none; }
    .hero-visual { min-height: 360px; }
    .hero-visual img { max-height: 430px; }
    .split.reverse .feature-image { order: initial; }
    .category-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .category-card:last-child { grid-column: 1 / -1; }
    .dual-grid, .news-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 640px) {
    .header-inner { min-height: 62px; padding: 0 14px; gap: 8px; }
    .site-logo img { max-height: 35px; max-width: 135px; }
    .header-actions { gap: 7px; }
    .header-download { min-height: 44px; padding: 0 13px; font-size: 14px; }
    .menu-toggle { width: 44px; height: 44px; }
    .container, .footer-inner, .footer-risk { width: min(100% - 32px, 1160px); }
    .hero { padding-top: 46px; }
    h1 { font-size: 39px; }
    .hero-subtitle { font-size: 22px; }
    .hero-actions .main-btn, .hero-actions .secondary-btn { width: 100%; }
    .hero-links { display: grid; gap: 8px; }
    .hero-points { grid-template-columns: 1fr; }
    .hero-visual { min-height: 300px; }
    .info-grid, .category-grid, .review-grid { grid-template-columns: 1fr; }
    .category-card:last-child { grid-column: auto; min-height: 200px; }
    .feature-image { min-height: 280px; }
    .content-card, .risk-panel { padding: 24px; }
    .page-hero { padding: 54px 0 44px; }
    .article { width: min(100% - 32px, 900px); padding: 48px 0 68px; }
    .article h2 { font-size: 27px; margin-top: 38px; }
    .cta-band { padding: 28px; align-items: flex-start; flex-direction: column; }
    .cta-band .secondary-btn { width: 100%; }
    .footer-links { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 420px) {
    .header-download { padding: 0 10px; }
    .footer-links { grid-template-columns: 1fr; }
}