:root {
    --blue: #3f8fe5;
    --blue-dark: #2875c7;
    --blue-soft: #eaf4ff;
    --ink: #1f2d3d;
    --text: #34495e;
    --muted: #6f7f90;
    --line: #d8e4f0;
    --light: #f4f7fb;
    --lighter: #eef3f9;
    --shadow: 0 12px 32px rgba(43,97,153,.10);
    --max: 1240px;
}
* { 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: 12px; top: -80px; z-index: 20000; padding: 10px 14px; background: #fff; border: 2px solid var(--blue); border-radius: 8px; }
.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: var(--max); 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; width: 190px; max-height: 44px; object-fit: contain; }
.nav-core { display: flex; align-items: center; gap: 5px; 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, .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: transform .2s ease, background .2s ease, border-color .2s ease; }
.main-btn { color: #fff; background: var(--blue); box-shadow: 0 10px 24px rgba(63,143,229,.22); }
.main-btn:hover { background: #2f7fd3; transform: translateY(-1px); }
.outline-btn { color: var(--blue-dark); background: #fff; border: 1px solid #b9d5f1; }
.outline-btn:hover { border-color: var(--blue); background: var(--blue-soft); transform: translateY(-1px); }
.main-btn:focus-visible, .outline-btn:focus-visible, .menu-toggle:focus-visible, .drawer-close:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid rgba(63,143,229,.36); outline-offset: 3px; }
.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 { width: 20px; height: 2px; background: var(--ink); border-radius: 3px; }
.drawer-overlay { position: fixed; inset: 0; z-index: 10000; background: rgba(18,35,52,.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; padding: 22px; box-shadow: -20px 0 50px rgba(23,58,92,.18); transform: translateX(105%); transition: transform .24s ease; overflow-y: auto; }
.site-drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 18px; border-bottom: 1px solid #e5edf5; }
.drawer-head .site-logo img { width: 175px; }
.drawer-close { width: 44px; height: 44px; border: 0; border-radius: 9px; background: var(--light); color: var(--ink); font-size: 30px; line-height: 1; cursor: pointer; }
.drawer-nav { display: grid; gap: 4px; padding: 18px 0; }
.drawer-nav a { text-decoration: none; color: var(--text); padding: 11px 13px; 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(var(--max), calc(100% - 40px)); margin: 0 auto; }
.narrow { max-width: 880px; }
.section { padding: 88px 0; }
.section-light { background: var(--light); }
.section-soft { background: linear-gradient(180deg, #fff 0%, #f7fbff 100%); }
.section-kicker { display: inline-block; margin-bottom: 10px; color: var(--blue-dark); font-size: 14px; font-weight: 800; letter-spacing: .08em; }
h1, h2, h3, .section-title { color: var(--ink); line-height: 1.25; margin-top: 0; }
h1 { font-size: clamp(38px, 5vw, 64px); letter-spacing: -.035em; }
h2 { font-size: clamp(28px, 3.5vw, 42px); letter-spacing: -.02em; }
h3 { font-size: 20px; }
p { margin: 0 0 1em; }
.lead { font-size: clamp(17px, 2vw, 20px); color: #51677d; }
.section-heading { max-width: 760px; margin-bottom: 38px; }
.section-heading p { color: var(--muted); font-size: 17px; }
.hero { position: relative; overflow: hidden; padding: 92px 0 72px; background: #fff; }
.hero::before { content: ""; position: absolute; width: 540px; height: 540px; right: -170px; top: -210px; border-radius: 50%; background: radial-gradient(circle, rgba(63,143,229,.16) 0%, rgba(63,143,229,0) 70%); pointer-events: none; }
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 70px; align-items: center; }
.hero-copy { position: relative; z-index: 1; }
.hero-copy h1 { margin-bottom: 18px; }
.hero-copy .lead { max-width: 700px; }
.hero-actions, .button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-links { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 22px; font-size: 14px; }
.hero-links a { text-decoration: none; }
.hero-points { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px 22px; padding: 0; margin: 26px 0 0; list-style: none; color: #4c6379; }
.hero-points li { position: relative; padding-left: 23px; }
.hero-points li::before { content: ""; position: absolute; left: 0; top: .68em; width: 9px; height: 9px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 5px var(--blue-soft); }
.hero-visual { position: relative; z-index: 1; display: flex; justify-content: center; }
.hero-visual img { max-height: 600px; object-fit: contain; filter: drop-shadow(0 24px 28px rgba(28,83,134,.17)); }
.capability-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 20px; }
.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,.06); }
.info-card { padding: 26px; }
.info-card h3 { margin-bottom: 8px; color: var(--blue-dark); }
.info-card p { color: var(--muted); margin: 0; }
.category-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 30px; }
.category-card { min-height: 196px; padding: 28px; display: flex; flex-direction: column; transition: transform .2s ease, border-color .2s ease; }
.category-card:hover { border-color: var(--blue); transform: translateY(-4px); }
.category-card h3 { color: var(--blue-dark); margin-bottom: 12px; }
.category-card p { color: var(--muted); flex: 1; }
.category-card a { text-decoration: none; font-weight: 700; }
.category-card.full { grid-column: 1 / -1; min-height: auto; display: grid; grid-template-columns: .5fr 1.5fr auto; align-items: center; gap: 28px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.split.reverse .feature-image { order: 2; }
.feature-image { display: flex; justify-content: center; }
.feature-image img, .content-img { max-height: 450px; object-fit: contain; display: block; }
.feature-copy ul, .prose ul, .check-list { padding-left: 1.2em; }
.feature-copy li, .prose li { margin-bottom: 7px; }
.dual-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 30px; }
.content-card { padding: 32px; }
.content-card img { width: 100%; max-height: 250px; object-fit: contain; margin-bottom: 24px; }
.notice { padding: 20px 22px; border-left: 4px solid var(--blue); background: var(--blue-soft); border-radius: 0 10px 10px 0; color: #31536f; }
.notice.warning { border-color: #d99b35; background: #fff8e9; color: #77551e; }
.news-grid, .review-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; }
.news-card { padding: 26px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.news-card .tag { display: inline-block; padding: 4px 9px; border-radius: 99px; background: var(--blue-soft); color: var(--blue-dark); font-size: 13px; font-weight: 700; margin-bottom: 12px; }
.news-card h3 { margin-bottom: 10px; }
.news-card p { color: var(--muted); }
.review-card { padding: 26px; }
.review-card p { margin: 0; }
.review-card strong { display: block; margin-top: 14px; color: var(--blue-dark); font-size: 14px; }
.faq-list { display: grid; gap: 12px; }
.faq-card { overflow: hidden; }
.faq-card summary { cursor: pointer; list-style: none; padding: 19px 54px 19px 22px; color: var(--ink); font-weight: 700; position: relative; }
.faq-card summary::-webkit-details-marker { display: none; }
.faq-card summary::after { content: "+"; position: absolute; right: 22px; top: 50%; transform: translateY(-50%); color: var(--blue); font-size: 25px; }
.faq-card[open] summary::after { content: "−"; }
.faq-answer { padding: 0 22px 21px; color: var(--muted); }
.cta-band { padding: 38px; border-radius: 16px; background: linear-gradient(135deg, #2f7fd3, #4ca0ed); color: #fff; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.cta-band h2, .cta-band p { color: #fff; }
.cta-band h2 { margin-bottom: 8px; }
.cta-band p { margin: 0; opacity: .9; }
.cta-band .main-btn { background: #fff; color: var(--blue-dark); box-shadow: none; flex: 0 0 auto; }
.page-hero { padding: 76px 0 56px; background: linear-gradient(180deg, #f5faff, #fff); border-bottom: 1px solid #e5edf5; }
.page-hero .container { max-width: 960px; }
.page-hero h1 { font-size: clamp(36px, 5vw, 56px); margin-bottom: 16px; }
.breadcrumb { margin-bottom: 18px; color: var(--muted); font-size: 14px; }
.breadcrumb a { text-decoration: none; }
.prose { max-width: 900px; margin: 0 auto; font-size: 17px; }
.prose h2 { margin-top: 2em; margin-bottom: .7em; font-size: clamp(26px, 3vw, 34px); }
.prose h3 { margin-top: 1.6em; }
.prose p, .prose li { color: #40576d; }
.prose .content-card { margin: 24px 0; }
.step-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; counter-reset: steps; }
.step-card { counter-increment: steps; padding: 28px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.step-card::before { content: counter(steps); display: inline-flex; width: 38px; height: 38px; align-items: center; justify-content: center; border-radius: 50%; background: var(--blue-soft); color: var(--blue-dark); font-weight: 800; margin-bottom: 18px; }
.table-wrap { overflow-x: auto; margin: 24px 0; }
table { width: 100%; border-collapse: collapse; min-width: 640px; }
th, td { padding: 14px 16px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--light); color: var(--ink); }
.site-footer { background: #438ddf; color: #fff; }
.footer-inner { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; padding: 62px 0 40px; display: grid; grid-template-columns: 1.1fr 1.9fr; gap: 70px; }
.footer-brand img { width: 190px; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 470px; margin-top: 18px; color: rgba(255,255,255,.86); }
.footer-links { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 28px; }
.footer-links h2 { color: #fff; font-size: 16px; margin-bottom: 15px; }
.footer-links a { display: block; color: rgba(255,255,255,.86); text-decoration: none; margin: 8px 0; }
.footer-links a:hover { color: #fff; text-decoration: underline; }
.footer-risk, .footer-bottom { border-top: 1px solid rgba(255,255,255,.18); width: min(var(--max), calc(100% - 40px)); margin: 0 auto; padding: 20px 0; color: rgba(255,255,255,.83); font-size: 14px; }
.footer-bottom { padding-top: 0; border-top: 0; }
@media (max-width: 1060px) {
    .nav-core { display: none; }
    .capability-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .news-grid, .review-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 820px) {
    .section { padding: 68px 0; }
    .hero { padding: 64px 0 54px; }
    .hero-grid, .split { grid-template-columns: 1fr; gap: 42px; }
    .split.reverse .feature-image { order: 0; }
    .hero-visual img { max-height: 480px; }
    .category-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .category-card.full { grid-template-columns: 1fr; gap: 8px; }
    .dual-grid { grid-template-columns: 1fr; }
    .step-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 640px) {
    .header-inner { min-height: 62px; padding: 0 14px; gap: 9px; }
    .site-logo img { width: 132px; max-height: 36px; }
    .header-actions { gap: 7px; }
    .header-download { min-height: 44px; padding: 0 13px; font-size: 14px; }
    .menu-toggle { width: 44px; height: 44px; }
    .container { width: min(100% - 32px, var(--max)); }
    h1 { font-size: 38px; }
    .hero-points { grid-template-columns: 1fr; }
    .capability-grid, .category-grid, .news-grid, .review-grid { grid-template-columns: 1fr; }
    .category-card.full { grid-column: auto; }
    .hero-actions .main-btn, .hero-actions .outline-btn { width: 100%; }
    .hero-links { flex-direction: column; gap: 8px; }
    .cta-band { padding: 28px 22px; flex-direction: column; align-items: flex-start; }
    .cta-band .main-btn { width: 100%; }
    .footer-links { grid-template-columns: 1fr 1fr; }
    .footer-inner, .footer-risk, .footer-bottom { width: calc(100% - 32px); }
}
@media (prefers-reduced-motion: reduce) {
    * { scroll-behavior: auto !important; transition: none !important; }
}