:root {
    --bg: #FFFFFF;
    --bg-deep: #F5F7FA;
    --panel: #FFFFFF;
    --panel-alt: #EEF1F6;
    --title: #0A1628;
    --text: #1E2A3A;
    --muted: #4A5568;
    --soft: #718096;
    --blue: #0033A0;
    --blue-bright: #0052CC;
    --blue-deep: #002066;
    --border: rgba(0,51,160,0.14);
    --shadow: 0 12px 36px rgba(0,33,102,0.08);
    --radius: 14px;
    --header-h: 118px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif; font-size: 16px; line-height: 1.75; overflow-x: hidden; }
body.layer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
a, button, input { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid rgba(0,82,204,.28); outline-offset: 2px; }
button, input { font: inherit; }
button { cursor: pointer; }
img { max-width: 100%; display: block; }
.site-shell { width: min(1220px, calc(100% - 32px)); margin: 0 auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 200; background: var(--blue); color: #fff; padding: 10px 14px; border-radius: 8px; }
.skip-link:focus { top: 12px; }
.site-header { position: fixed; inset: 0 0 auto; z-index: 100; background: #fff; box-shadow: 0 1px 0 var(--border); }
.spine-line { height: 18px; background: var(--blue-deep); color: #fff; font-size: 11px; line-height: 18px; }
.spine-inner { height: 18px; display: flex; align-items: center; justify-content: space-between; }
.text-control { appearance: none; border: 0; background: transparent; color: #fff; padding: 0 4px; min-height: 18px; font-size: 11px; }
.cover-bar { height: 60px; background: #fff; border-bottom: 1px solid var(--border); }
.cover-inner { height: 60px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 16px; }
.brand-link { justify-self: start; min-width: 64px; min-height: 44px; display: flex; align-items: center; }
.brand-logo, .catalog-logo, .footer-logo { object-fit: contain; object-position: left center; }
.brand-logo { max-height: 36px; max-width: 150px; }
.brand-word { font-weight: 900; font-size: 25px; letter-spacing: -.03em; color: var(--blue-deep); }
.catalog-button, .app-link, .button-primary, .button-secondary { min-height: 44px; border-radius: 10px; padding: 10px 18px; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; }
.catalog-button { border: 1px solid var(--border); background: #fff; color: var(--blue-deep); }
.app-link { justify-self: end; color: var(--blue); }
.tab-bar { height: 40px; background: var(--bg-deep); border-bottom: 1px solid var(--border); }
.tab-inner { height: 40px; display: flex; align-items: center; gap: 6px; }
.tab-inner a { min-height: 30px; padding: 3px 12px; display: inline-flex; align-items: center; color: var(--muted); border-radius: 6px; font-size: 14px; }
.tab-inner a:hover { color: var(--blue); background: #fff; }
.tab-inner a.is-current { background: var(--blue); color: #fff; }
.site-main { padding-top: calc(var(--header-h) + 28px); }
.section { padding: 56px 0; }
.section.alt { background: var(--bg-deep); }
.section.compact { padding: 36px 0; }
.hero-shell { width: min(1220px, calc(100% - 32px)); margin: 0 auto; }
.eyebrow { display: inline-block; color: var(--blue); font-size: 13px; font-weight: 800; letter-spacing: .08em; margin-bottom: 8px; }
h1, h2, h3 { color: var(--title); line-height: 1.25; margin-top: 0; }
h1 { font-size: clamp(28px, 4vw, 32px); margin-bottom: 14px; letter-spacing: -.02em; }
h2 { font-size: clamp(22px, 3vw, 26px); margin-bottom: 12px; }
h3 { font-size: 18px; margin-bottom: 8px; }
p { margin: 0 0 16px; }
.lead { color: var(--muted); max-width: 840px; font-size: 17px; }
.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: end; margin-bottom: 24px; }
.section-head p { max-width: 680px; color: var(--muted); margin-bottom: 0; }
.hero-copy { padding: 24px 0 6px; }
.hero-actions, .inline-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.button-primary { background: linear-gradient(135deg,#0052CC 0%,#0033A0 50%,#002066 100%); color: #fff; border: 1px solid transparent; }
.button-secondary { background: #fff; color: var(--blue); border: 1px solid var(--blue); }
.button-primary:hover, .button-secondary:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.media-slot { width: 100%; background: var(--panel-alt); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; display: flex; align-items: center; justify-content: center; }
.media-slot img { width: 100%; height: 100%; object-fit: contain; object-position: center; }
.media-fallback { color: var(--blue-deep); font-weight: 900; letter-spacing: .05em; }
.media-fallback span { opacity: .7; }
.media-banner { max-height: 300px; aspect-ratio: 16 / 9; }
.media-card { height: 210px; }
.media-wide { height: 240px; }
.media-app { min-height: 320px; max-height: 420px; }
.media-app img { max-height: 420px; width: auto; max-width: 100%; }
.page-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.page-card, .info-card, .status-card, .number-card, .faq-item, .article-block { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.page-card { padding: 20px; min-height: 150px; position: relative; overflow: hidden; }
.page-card::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 5px; background: var(--blue-bright); }
.page-card:nth-child(even)::before { background: var(--blue-deep); }
.page-card p { color: var(--muted); font-size: 15px; }
.page-card a { color: var(--blue); font-weight: 800; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.info-card { padding: 18px; }
.info-card .media-slot { margin-bottom: 16px; }
.info-card p { color: var(--muted); }
.number-list { display: grid; gap: 12px; }
.number-row { display: grid; grid-template-columns: 76px 1fr auto; gap: 18px; align-items: center; padding: 18px 20px; border: 1px solid var(--border); border-radius: 12px; background: #fff; }
.number-row strong { color: var(--blue); font-size: 28px; line-height: 1; }
.number-row p { margin: 0; color: var(--muted); }
.number-row a { color: var(--blue); font-weight: 800; }
.six-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.tag-card { min-height: 130px; border: 1px solid var(--border); border-radius: 12px; padding: 18px; background: #fff; }
.tag-card p { color: var(--muted); font-size: 14px; }
.tag-card a { color: var(--blue); font-weight: 800; }
.shelf-list { display: grid; gap: 10px; }
.shelf-item { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 16px; align-items: center; padding: 16px 18px; border-top: 1px solid var(--border); background: #fff; }
.shelf-item:first-child { border-top: 0; }
.shelf-item strong { color: var(--title); }
.shelf-item span { color: var(--muted); font-size: 14px; }
.shelf-item a { color: var(--blue); font-weight: 800; }
.shelf-frame { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.status-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }
.status-card { padding: 20px; box-shadow: none; }
.status-card small { color: var(--blue); font-weight: 800; }
.status-card p { color: var(--muted); font-size: 14px; margin-top: 10px; }
.long-strip { display: grid; grid-template-columns: 90px 1fr; gap: 20px; padding: 20px 0; border-top: 1px solid var(--border); }
.long-strip:first-child { border-top: 0; }
.long-strip .step { color: var(--blue); font-weight: 900; font-size: 24px; }
.long-strip p { color: var(--muted); }
.quote-block { padding: 22px; background: var(--bg-deep); border-left: 4px solid var(--blue); border-radius: 0 12px 12px 0; }
.quote-block + .quote-block { margin-top: 14px; }
.quote-block p { margin: 0; }
.quote-block small { display: block; margin-top: 10px; color: var(--soft); }
.app-layout { display: grid; grid-template-columns: minmax(280px,.8fr) 1.2fr; gap: 34px; align-items: center; }
.icon-row { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.app-icon { width: 64px; height: 64px; object-fit: contain; border-radius: 14px; }
.rich-copy { max-width: 860px; }
.rich-copy p { color: var(--text); }
.rich-copy h2 { margin-top: 34px; }
.article-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.article-block { padding: 22px; box-shadow: none; }
.article-block p, .article-block li { color: var(--muted); }
.clean-list { margin: 0; padding-left: 20px; }
.clean-list li + li { margin-top: 8px; }
.notice { padding: 18px 20px; background: var(--bg-deep); border: 1px solid var(--border); border-radius: 12px; color: var(--muted); }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 20px 22px; box-shadow: none; }
.faq-item h2 { font-size: 18px; margin-bottom: 10px; }
.faq-item p { color: var(--muted); margin: 0; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 7px; color: var(--soft); font-size: 14px; margin-bottom: 14px; }
.breadcrumbs a { color: var(--blue); }
.catalog-panel, .search-panel { position: fixed; z-index: 130; left: 50%; transform: translateX(-50%); width: min(1220px, calc(100% - 32px)); background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); visibility: hidden; pointer-events: none; opacity: 0; transition: opacity .18s ease, transform .18s ease; }
.catalog-panel { top: 78px; max-height: 50vh; overflow: auto; border-radius: 0 0 14px 14px; padding: 20px; transform: translate(-50%, -8px); }
.catalog-panel[aria-hidden="false"], .search-panel[aria-hidden="false"] { visibility: visible; pointer-events: auto; opacity: 1; transform: translate(-50%,0); }
.catalog-head, .search-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.catalog-brand { display: flex; align-items: center; gap: 10px; color: var(--title); }
.catalog-logo { max-height: 32px; max-width: 130px; }
.icon-button { min-height: 44px; padding: 8px 14px; border-radius: 10px; border: 1px solid var(--border); color: var(--blue); background: #fff; }
.catalog-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
.catalog-group h2 { font-size: 15px; color: var(--blue); margin-bottom: 8px; }
.catalog-group a { display: block; padding: 9px 0; border-top: 1px solid var(--border); }
.catalog-group a:first-of-type { border-top: 0; }
.catalog-group b { display: block; color: var(--title); }
.catalog-group span { display: block; color: var(--soft); font-size: 12px; line-height: 1.55; margin-top: 2px; }
.search-panel { top: 78px; border-radius: 0 0 14px 14px; padding: 22px; transform: translate(-50%,-8px); }
.search-head h2 { margin: 0; font-size: 22px; }
.search-box label { display: block; color: var(--muted); font-size: 13px; margin-bottom: 6px; }
.search-box input { width: 100%; min-height: 48px; border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px; color: var(--text); background: var(--bg-deep); }
.search-presets { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.search-presets a { min-height: 44px; display: inline-flex; align-items: center; padding: 8px 14px; border: 1px solid var(--border); border-radius: 10px; color: var(--blue); }
.overlay { position: fixed; inset: 0; background: rgba(10,22,40,.42); z-index: 120; visibility: hidden; pointer-events: none; opacity: 0; transition: opacity .18s ease; }
.overlay[aria-hidden="false"] { visibility: visible; pointer-events: auto; opacity: 1; }
.site-footer { background: #0A1628; color: #A0AEC0; padding: 52px 0 28px; margin-top: 48px; }
.footer-inner { display: grid; gap: 28px; }
.footer-brand { display: flex; gap: 14px; align-items: center; color: #fff; }
.footer-logo { max-height: 34px; max-width: 145px; filter: brightness(0) invert(1); }
.footer-brand div { display: flex; gap: 10px; align-items: baseline; }
.footer-brand strong { font-size: 24px; }
.footer-brand span { color: #A0AEC0; }
.footer-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.footer-grid h2 { color: #fff; font-size: 14px; }
.footer-grid a { display: block; color: #CBD5E0; margin: 6px 0; }
.footer-grid a:hover { color: #fff; }
.footer-note, .copyright { color: #A0AEC0; font-size: 13px; margin: 0; }
.mobile-bottom { display: none; }
@media (max-width: 900px) {
    .page-cards, .grid-4 { grid-template-columns: repeat(2,1fr); }
    .grid-3 { grid-template-columns: repeat(2,1fr); }
    .status-grid { grid-template-columns: repeat(2,1fr); }
    .catalog-grid { grid-template-columns: repeat(2,1fr); }
    .app-layout { grid-template-columns: 1fr; }
    .media-app { max-height: 360px; }
    .article-grid { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
    :root { --header-h: 78px; }
    .site-shell, .hero-shell { width: calc(100% - 32px); }
    .tab-bar { display: none; }
    .cover-inner { grid-template-columns: minmax(72px,1fr) auto minmax(72px,1fr); gap: 8px; }
    .brand-logo { max-width: 110px; max-height: 32px; }
    .catalog-button { padding-inline: 12px; }
    .app-link { min-height: 44px; font-size: 14px; }
    .site-main { padding-top: calc(var(--header-h) + 22px); padding-bottom: calc(58px + env(safe-area-inset-bottom)); }
    .section { padding: 38px 0; }
    .section-head { align-items: start; flex-direction: column; gap: 8px; }
    .page-cards, .grid-4, .grid-3, .grid-2, .six-grid, .status-grid { grid-template-columns: 1fr; }
    .media-banner { max-height: 300px; aspect-ratio: 3 / 2; }
    .media-card { height: 200px; }
    .number-row { grid-template-columns: 58px 1fr; }
    .number-row a { grid-column: 2; }
    .long-strip { grid-template-columns: 58px 1fr; }
    .catalog-panel, .search-panel { width: 100%; top: 78px; left: 0; transform: translateY(-8px); border-left: 0; border-right: 0; border-radius: 0 0 14px 14px; }
    .catalog-panel { max-height: 66vh; }
    .catalog-panel[aria-hidden="false"], .search-panel[aria-hidden="false"] { transform: translateY(0); }
    .catalog-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2,1fr); }
    .site-footer { margin-top: 24px; padding-bottom: calc(82px + env(safe-area-inset-bottom)); }
    .mobile-bottom { position: fixed; z-index: 110; left: 0; right: 0; bottom: 0; min-height: calc(50px + env(safe-area-inset-bottom)); padding-bottom: env(safe-area-inset-bottom); background: #fff; border-top: 1px solid var(--border); display: grid; grid-template-columns: repeat(5,1fr); }
    .mobile-bottom a { min-height: 50px; display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 13px; }
    .mobile-bottom a.is-current { background: var(--blue); color: #fff; }
}
@media (max-width: 420px) {
    .brand-logo { max-width: 92px; }
    .brand-word { font-size: 22px; }
    .catalog-button { font-size: 14px; padding-inline: 10px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 18px; }
}