:root {
    color-scheme: light;
    --ink: #18201d;
    --muted: #617069;
    --line: #dce4df;
    --soft-line: #edf1ef;
    --canvas: #f4f6f5;
    --surface: #ffffff;
    --green: #13795b;
    --green-dark: #0c5d44;
    --green-soft: #e8f4ef;
    --blue: #2269a8;
    --blue-soft: #eaf2fa;
    --header: #16231f;
    font-family: "Microsoft YaHei UI", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--canvas); color: var(--ink); }
button, input { font: inherit; letter-spacing: 0; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.skip-link { position: fixed; top: 10px; left: 10px; z-index: 100; transform: translateY(-180%); padding: 9px 12px; background: white; color: var(--ink); }
.skip-link:focus { transform: translateY(0); }

.site-header { position: sticky; top: 0; z-index: 20; height: 72px; border-bottom: 1px solid rgba(255,255,255,.12); background: var(--header); color: white; }
.header-inner, .section-inner, .footer-inner { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 11px; color: white; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 48px; height: 38px; border: 1px solid #71b9a0; border-radius: 5px; color: #c9f0e2; font-size: 11px; font-weight: 800; }
.brand-copy { display: grid; gap: 2px; }
.brand-copy strong { font-size: 16px; letter-spacing: 0; }
.brand-copy small { color: #a9bab4; font-size: 11px; }
.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav a { color: #d5dfdb; font-size: 13px; text-decoration: none; }
.site-nav a:hover, .site-nav a:focus-visible { color: white; }

.hero { padding: 34px 0; border-bottom: 1px solid var(--line); background: #e9eeeb; }
.hero-layout { width: min(1392px, calc(100% - 48px)); display: grid; grid-template-columns: minmax(220px, 260px) minmax(0, 854px) minmax(220px, 260px); justify-content: center; gap: 24px; margin: 0 auto; }
.hero-layout > * { min-width: 0; }
.hero-product, .hero-news { min-width: 0; padding: 28px 24px; border-top: 3px solid var(--green); background: var(--surface); }
.hero-product { display: flex; flex-direction: column; align-items: flex-start; }
.eyebrow { margin: 0 0 14px; color: var(--green); font-size: 11px; font-weight: 800; letter-spacing: 0; }
.hero h1 { margin: 0; color: var(--ink); font-size: 27px; line-height: 1.25; letter-spacing: 0; }
.hero-lead { margin: 16px 0 0; color: var(--muted); font-size: 15px; line-height: 1.75; }
.hero-release-meta { width: 100%; display: grid; gap: 0; margin: 28px 0 0; }
.hero-release-meta div { padding: 12px 0; border-top: 1px solid var(--soft-line); }
.hero-release-meta dt { color: var(--muted); font-size: 11px; }
.hero-release-meta dd { margin: 5px 0 0; font-size: 14px; font-weight: 800; }
.hero-download { width: 100%; margin-top: auto; }
.hero-visual { align-self: center; width: 100%; min-width: 0; margin: 0; overflow: hidden; background: #071d30; }
.hero-media { display: block; width: 100%; max-width: 100%; height: auto; aspect-ratio: 854 / 480; object-fit: contain; }
.hero-news-heading { padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.hero-news-heading .eyebrow { margin-bottom: 8px; }
.hero-news h2 { margin: 0; font-size: 22px; }
.notice-list { display: grid; }
.notice-item { padding: 16px 0; border-bottom: 1px solid var(--soft-line); }
.notice-item time { color: var(--green); font-size: 11px; font-weight: 800; }
.notice-item p { margin: 7px 0 0; color: #34433d; font-size: 13px; font-weight: 700; line-height: 1.55; }
.information-nav { display: grid; gap: 0; margin-top: 22px; }
.information-nav strong { padding-bottom: 8px; color: var(--muted); font-size: 11px; }
.information-nav a { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; color: var(--blue); font-size: 13px; font-weight: 700; text-decoration: none; }
.information-nav a:hover, .information-nav a:focus-visible { color: var(--green-dark); }
.button { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid transparent; border-radius: 5px; padding: 0 18px; background: white; color: var(--ink); font-weight: 700; text-decoration: none; cursor: pointer; }
.button-primary, .button-download { background: var(--green); color: white; }
.button-primary:hover, .button-download:hover { background: var(--green-dark); }
.button-secondary { border-color: #cfd9d4; background: white; }
.button-secondary:hover { border-color: #a9bbb2; background: #f9fbfa; }
.release-strip { border-bottom: 1px solid var(--line); background: #eef2f0; }
.release-summary { width: min(1180px, calc(100% - 48px)); display: grid; grid-template-columns: repeat(3, minmax(0, 180px)); gap: 0; margin: 0 auto; padding: 23px 0; }
.release-summary div { padding: 0 24px; border-left: 1px solid #cbd6d1; }
.release-summary div:first-child { padding-left: 0; border-left: 0; }
.release-summary dt { color: var(--muted); font-size: 12px; }
.release-summary dd { margin: 7px 0 0; font-size: 15px; font-weight: 800; }

.download-section { padding: 78px 0 86px; background: var(--surface); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 40px; }
.section-heading h2 { margin: 0; font-size: 34px; letter-spacing: 0; }
.section-heading p:not(.eyebrow) { margin: 10px 0 0; color: var(--muted); line-height: 1.7; }
.search-field { width: min(340px, 100%); display: grid; gap: 7px; color: var(--muted); font-size: 12px; font-weight: 700; }
.search-field input { width: 100%; height: 42px; border: 1px solid #cad5cf; border-radius: 5px; padding: 0 12px; background: white; color: var(--ink); outline: none; }
.search-field input:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(19,121,91,.12); }
.download-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 18px; margin-top: 32px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.segmented-control { display: inline-flex; padding: 3px; border: 1px solid var(--line); border-radius: 6px; background: var(--canvas); }
.segment { min-height: 34px; border: 0; border-radius: 4px; padding: 0 14px; background: transparent; color: var(--muted); font-size: 13px; font-weight: 700; cursor: pointer; }
.segment.active { background: white; color: var(--green-dark); box-shadow: 0 1px 3px rgba(18,32,26,.1); }
.result-count { color: var(--muted); font-size: 13px; }
.application-list { display: grid; gap: 16px; padding-top: 18px; }
.application-item { display: grid; grid-template-columns: minmax(260px, .9fr) minmax(280px, 1.25fr); column-gap: 42px; padding: 28px; border: 1px solid var(--line); border-radius: 7px; background: white; }
.application-identity { display: flex; align-items: center; gap: 15px; }
.application-mark { flex: 0 0 auto; display: grid; place-items: center; width: 62px; height: 62px; border-radius: 6px; background: var(--header); color: white; font-size: 13px; font-weight: 800; }
.application-title-row { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; }
.application-title-row h3 { margin: 0; font-size: 22px; letter-spacing: 0; }
.release-badge { padding: 4px 7px; border-radius: 3px; background: var(--green-soft); color: var(--green-dark); font-size: 11px; font-weight: 800; }
.application-category { margin: 6px 0 0; color: var(--muted); font-size: 13px; }
.application-description { grid-column: 1; margin: 20px 0 0; color: #4d5d56; line-height: 1.75; }
.release-meta { grid-column: 2; grid-row: 1 / span 2; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-content: start; gap: 20px 28px; margin: 0; padding: 4px 0 0; }
.release-meta div { min-width: 0; padding-bottom: 13px; border-bottom: 1px solid var(--soft-line); }
.release-meta dt { color: var(--muted); font-size: 12px; }
.release-meta dd { margin: 7px 0 0; font-size: 14px; font-weight: 800; overflow-wrap: anywhere; }
.release-actions { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 10px; margin-top: 25px; padding-top: 22px; border-top: 1px solid var(--soft-line); }
.empty-state { padding: 60px 20px; border-bottom: 1px solid var(--line); text-align: center; }
.empty-state p { margin: 8px 0 0; color: var(--muted); }

.site-footer { padding: 36px 0; background: var(--header); color: white; }
.footer-inner { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 20px 40px; }
.footer-inner > div:first-child strong { font-size: 18px; }
.footer-inner p { margin: 8px 0 0; color: #aebdb7; font-size: 12px; }
.contact-list { display: flex; gap: 22px; }
.contact-list a { color: #dce6e2; font-size: 13px; text-decoration: none; }
.copyright { grid-column: 1 / -1; padding-top: 18px; border-top: 1px solid #33443e; }
@media (max-width: 820px) {
    .header-inner, .section-inner, .footer-inner { width: min(100% - 32px, 1180px); }
    .site-header { height: 66px; }
    .brand-copy small { display: none; }
    .site-nav { gap: 16px; }
    .site-nav a:last-child { display: none; }
    .hero { padding: 24px 0; }
    .hero-layout { width: min(100% - 32px, 1180px); grid-template-columns: minmax(220px, 280px) minmax(0, 1fr); gap: 16px; }
    .hero-news { grid-column: 1 / -1; display: grid; grid-template-columns: 160px minmax(0, 1fr) minmax(150px, .7fr); gap: 22px; align-items: start; }
    .hero-news-heading { border-bottom: 0; }
    .information-nav { margin-top: 0; }
    .hero h1 { font-size: 28px; }
    .release-summary { width: min(100% - 32px, 1180px); grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; }
    .release-summary div, .release-summary div:first-child { padding: 0 0 0 14px; border-left: 2px solid #a9c7bb; }
    .download-section { padding: 58px 0; }
    .section-heading { align-items: stretch; flex-direction: column; gap: 22px; }
    .search-field { width: 100%; }
    .application-item { grid-template-columns: 1fr; padding: 21px; }
    .application-description, .release-meta, .release-actions { grid-column: 1; grid-row: auto; }
    .release-meta { margin-top: 24px; }
    .footer-inner { grid-template-columns: 1fr; align-items: start; }
    .contact-list { flex-direction: column; gap: 8px; }
    .copyright { grid-column: 1; }
}

@media (max-width: 520px) {
    .site-nav a:nth-child(2) { display: none; }
    .site-nav a:nth-child(3) { display: none; }
    .hero-layout { grid-template-columns: 1fr; }
    .hero-product { min-height: 330px; }
    .hero-visual { grid-row: 2; }
    .hero-news { grid-column: 1; display: block; }
    .hero-news-heading { border-bottom: 1px solid var(--line); }
    .information-nav { margin-top: 22px; }
    .release-summary { grid-template-columns: 1fr; gap: 14px; }
    .release-actions { flex-direction: column; }
    .release-actions .button { width: 100%; }
    .download-toolbar { align-items: flex-start; flex-direction: column; }
    .release-meta { grid-template-columns: 1fr; gap: 13px; }
    .application-mark { width: 54px; height: 54px; }
    .application-title-row h3 { font-size: 19px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}