:root {
    --bg: #0D0D0D;
    --deep: #070707;
    --panel: #171717;
    --panel-2: #222222;
    --text: #C8C8C8;
    --title: #F2F2F2;
    --muted: #9A9A9A;
    --quiet: #6E6E6E;
    --silver: #C8C8C8;
    --bright: #E8E8E8;
    --ink: #1A1A1A;
    --mist-red: #B85A5A;
    --border: rgba(232,232,232,0.12);
    --border-strong: rgba(232,232,232,0.36);
    --shadow: 0 12px 28px rgba(0,0,0,0.45);
    --radius: 12px;
    --header-height: 122px;
}
* { box-sizing: border-box; }
html { background: var(--bg); scroll-behavior: smooth; overflow-x: hidden; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: Arial, "PingFang SC", "Microsoft YaHei", sans-serif; font-size: 15px; line-height: 1.7; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input { font: inherit; }
button { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--bright); outline-offset: 3px; }
button:focus:not(:focus-visible), a:focus:not(:focus-visible) { outline: none; }
.shell { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 1000; background: var(--bright); color: var(--bg); padding: 10px 14px; border-radius: 8px; }
.skip-link:focus { top: 12px; }
.site-header { position: fixed; inset: 0 0 auto 0; z-index: 80; box-shadow: 0 1px 0 rgba(255,255,255,.04); }
.ink-line { height: 22px; background: var(--deep); border-bottom: 1px solid rgba(255,255,255,.04); font-size: 12px; }
.ink-line-inner { height: 22px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.text-control, .drawer-trigger, .icon-control { border: 0; background: transparent; cursor: pointer; }
.text-control { min-width: 44px; height: 22px; color: var(--silver); font-size: 12px; padding: 0 4px; }
.material-bar { height: 60px; background: var(--ink); border-bottom: 1px solid var(--border); }
.material-bar-inner { height: 60px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 18px; }
.brand-home { justify-self: start; min-width: 84px; min-height: 44px; display: inline-flex; align-items: center; font-size: 16px; font-weight: 700; color: var(--title); }
.brand-home img { height: 28px; width: auto; object-fit: contain; }
.drawer-trigger { justify-self: center; height: 44px; min-width: 88px; padding: 0 20px; border: 1px solid var(--border-strong); border-radius: 999px; color: var(--bright); background: rgba(255,255,255,.03); }
.drawer-trigger:hover { background: rgba(255,255,255,.08); }
.app-link { justify-self: end; height: 44px; min-width: 88px; padding: 0 18px; border-radius: 999px; display: inline-flex; align-items: center; justify-content: center; color: #0D0D0D; background: linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%); font-size: 14px; font-weight: 700; }
.app-link:hover { filter: brightness(1.06); }
.case-tabs { height: 40px; background: #101010; border-bottom: 1px solid var(--border); }
.case-tabs-inner { height: 40px; display: flex; justify-content: center; align-items: stretch; gap: 6px; }
.case-tabs a { min-width: 92px; padding: 0 22px; display: inline-flex; align-items: center; justify-content: center; font-size: 13px; color: var(--silver); }
.case-tabs a:hover { background: rgba(255,255,255,.06); }
.case-tabs a.is-current { background: var(--silver); color: var(--bg); font-weight: 700; }
.site-main { min-height: 60vh; padding-top: calc(var(--header-height) + 34px); padding-bottom: 70px; }
.page-hero { margin-bottom: 26px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; min-height: 28px; margin-bottom: 12px; color: var(--silver); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--mist-red); }
h1, h2, h3 { color: var(--title); margin-top: 0; }
h1 { font-size: 24px; line-height: 1.3; margin-bottom: 14px; }
h2 { font-size: 20px; line-height: 1.4; margin-bottom: 12px; }
h3 { font-size: 16px; line-height: 1.45; margin-bottom: 8px; }
p { margin: 0 0 14px; }
.lead { max-width: 820px; color: var(--silver); font-size: 16px; }
.muted { color: var(--muted); }
.section { margin-top: 34px; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 18px; margin-bottom: 16px; }
.section-head p { max-width: 650px; margin: 0; color: var(--muted); }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: 0 1px 0 rgba(255,255,255,.02); }
.card:hover { border-color: rgba(232,232,232,.22); }
.card p:last-child { margin-bottom: 0; }
.card a.text-link, .text-link { color: var(--bright); text-decoration: underline; text-decoration-color: rgba(232,232,232,.3); text-underline-offset: 4px; }
.card-number { display: block; margin-bottom: 12px; color: var(--bright); font-size: 30px; font-weight: 700; line-height: 1; letter-spacing: -.04em; }
.media-slot { margin: 0; width: 100%; background: var(--ink); 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; }
.banner-slot { height: 260px; }
.card-media { height: 180px; margin-bottom: 16px; }
.feature-media { height: 200px; margin-bottom: 18px; }
.app-media { max-height: 360px; min-height: 280px; }
.home-cover-copy { padding-top: 20px; text-align: center; }
.home-cover-copy .lead { margin-left: auto; margin-right: auto; max-width: 760px; }
.brand-lockup { display: flex; justify-content: center; align-items: center; gap: 12px; margin-bottom: 10px; }
.brand-lockup strong { color: var(--title); font-size: 16px; letter-spacing: .04em; }
.brand-lockup span { color: var(--muted); font-size: 12px; }
.action-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 20px; }
.btn { min-height: 42px; padding: 0 18px; display: inline-flex; align-items: center; justify-content: center; border-radius: 999px; font-size: 14px; font-weight: 700; border: 1px solid var(--border-strong); }
.btn-primary { background: linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%); color: var(--bg); border-color: transparent; }
.btn-secondary { background: #121212; color: var(--bright); }
.btn:hover { transform: translateY(-1px); }
.split { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 18px; align-items: stretch; }
.split.reverse { grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); }
.split > * { min-width: 0; }
.content-panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.shelf-list { display: grid; gap: 10px; }
.shelf-row { display: grid; grid-template-columns: 72px 1fr auto; gap: 14px; align-items: center; min-height: 64px; padding: 12px 14px; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; }
.shelf-code { color: var(--bright); font-weight: 700; letter-spacing: .08em; }
.shelf-row strong { color: var(--title); display: block; margin-bottom: 2px; }
.shelf-row span { color: var(--muted); font-size: 13px; }
.shelf-row a { min-height: 40px; padding: 0 14px; display: inline-flex; align-items: center; border: 1px solid var(--border-strong); border-radius: 999px; color: var(--bright); font-size: 13px; }
.number-list { display: grid; gap: 12px; }
.number-item { display: grid; grid-template-columns: 64px 1fr; gap: 18px; padding: 18px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); }
.number-item .num { font-size: 36px; color: var(--bright); font-weight: 800; line-height: 1; }
.timeline { position: relative; margin-left: 12px; padding-left: 28px; display: grid; gap: 16px; }
.timeline::before { content: ""; position: absolute; top: 8px; bottom: 8px; left: 5px; width: 1px; background: var(--border-strong); }
.timeline-item { position: relative; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.timeline-item::before { content: ""; position: absolute; left: -28px; top: 24px; width: 10px; height: 10px; border-radius: 50%; background: var(--bright); box-shadow: 0 0 0 5px var(--bg); }
.status { display: inline-flex; min-height: 28px; padding: 2px 10px; align-items: center; border-radius: 999px; background: var(--panel-2); color: var(--bright); font-size: 12px; margin-bottom: 8px; }
.note-list { display: grid; gap: 14px; }
.note { padding: 18px; border-left: 3px solid var(--mist-red); background: var(--panel); border-radius: 0 var(--radius) var(--radius) 0; }
.note h3 { display: flex; align-items: center; gap: 8px; }
.tag { display: inline-flex; min-height: 26px; align-items: center; padding: 0 9px; border-radius: 999px; background: var(--panel-2); color: var(--silver); font-size: 12px; }
.prose { max-width: 840px; }
.prose h2 { margin-top: 30px; }
.prose h3 { margin-top: 22px; }
.prose ul { padding-left: 20px; margin: 10px 0 16px; }
.prose li { margin-bottom: 7px; }
.policy-block { padding: 20px 0; border-top: 1px solid var(--border); }
.policy-block:first-child { border-top: 0; padding-top: 0; }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 20px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); }
.faq-item h2, .faq-item h3 { margin-bottom: 10px; }
.contact-route { display: grid; grid-template-columns: 160px 1fr; gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--border); }
.contact-route:last-child { border-bottom: 0; }
.notice { padding: 16px 18px; border: 1px solid rgba(184,90,90,.4); border-radius: var(--radius); background: rgba(184,90,90,.08); color: var(--silver); }
.site-footer { background: var(--deep); border-top: 1px solid var(--border); color: var(--text); font-size: 13px; }
.footer-top { display: grid; grid-template-columns: minmax(260px, .85fr) minmax(0, 1.55fr); gap: 44px; padding: 40px 0 30px; }
.footer-brand-row { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.footer-brand-row img { height: 28px; width: auto; object-fit: contain; }
.footer-brand-row strong { display: block; color: var(--title); font-size: 16px; }
.footer-brand-row span { display: block; color: var(--muted); font-size: 11px; letter-spacing: .08em; }
.footer-brand p { color: var(--muted); margin: 0; }
.footer-links { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.footer-links h2 { font-size: 13px; margin-bottom: 10px; color: var(--bright); }
.footer-links a { display: block; min-height: 32px; color: var(--muted); }
.footer-links a:hover { color: var(--bright); }
.footer-bottom { padding: 16px 0 22px; border-top: 1px solid var(--border); color: var(--quiet); }
.material-drawer { position: fixed; inset: 0 auto 0 0; z-index: 120; width: min(400px, 86vw); background: #101010; border-right: 1px solid var(--border-strong); box-shadow: var(--shadow); transform: translateX(-104%); visibility: hidden; pointer-events: none; transition: transform .22s ease, visibility .22s ease; display: flex; flex-direction: column; }
body.drawer-open .material-drawer { transform: translateX(0); visibility: visible; pointer-events: auto; }
.drawer-head { min-height: 72px; padding: 14px 16px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.drawer-brand { display: flex; align-items: center; gap: 10px; }
.drawer-brand img { height: 28px; width: auto; object-fit: contain; }
.drawer-brand strong { color: var(--title); }
.icon-control { min-width: 58px; height: 44px; padding: 0 12px; border: 1px solid var(--border-strong); border-radius: 999px; color: var(--bright); }
.icon-control:hover { background: rgba(255,255,255,.06); }
.drawer-body { overflow-y: auto; padding: 14px 16px 40px; }
.drawer-group { margin-bottom: 20px; }
.drawer-group h2 { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.drawer-group a { display: block; padding: 12px; border-radius: 10px; border: 1px solid transparent; }
.drawer-group a:hover { border-color: var(--border); background: var(--panel); }
.drawer-group strong { display: block; color: var(--title); margin-bottom: 2px; }
.drawer-group span { display: block; color: var(--muted); font-size: 12px; line-height: 1.55; }
.search-panel { position: fixed; z-index: 115; top: 82px; left: 50%; width: min(760px, calc(100% - 32px)); transform: translate(-50%, -20px); visibility: hidden; opacity: 0; pointer-events: none; transition: .18s ease; }
body.search-open .search-panel { visibility: visible; opacity: 1; pointer-events: auto; transform: translate(-50%, 0); }
.search-card { background: var(--ink); border: 1px solid var(--border-strong); border-radius: 0 0 var(--radius) var(--radius); box-shadow: var(--shadow); padding: 18px; }
.search-head { display: flex; justify-content: space-between; align-items: center; gap: 18px; margin-bottom: 14px; }
.search-head strong { display: block; color: var(--title); font-size: 16px; }
.search-head span { display: block; color: var(--muted); font-size: 12px; }
.search-field input { width: 100%; height: 46px; border-radius: 10px; border: 1px solid var(--border-strong); background: #0F0F0F; color: var(--bright); padding: 0 14px; }
.search-field input::placeholder { color: var(--quiet); }
.search-presets { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.search-presets a { min-height: 40px; padding: 0 14px; display: inline-flex; align-items: center; border: 1px solid var(--border); border-radius: 999px; color: var(--silver); }
.search-presets a:hover { border-color: var(--border-strong); color: var(--bright); }
.site-mask { position: fixed; inset: 0; z-index: 100; background: rgba(0,0,0,.68); opacity: 0; visibility: hidden; pointer-events: none; transition: .18s ease; }
.site-mask.is-visible { opacity: 1; visibility: visible; pointer-events: auto; }
body.overlay-open { overflow: hidden; }
.mobile-bottom-nav { display: none; }
@media (max-width: 820px) {
    :root { --header-height: 82px; }
    .case-tabs { display: none; }
    .site-main { padding-top: calc(var(--header-height) + 26px); padding-bottom: 88px; }
    .material-bar-inner { grid-template-columns: auto 1fr auto; gap: 8px; }
    .brand-home { min-width: 0; }
    .brand-home img { max-width: 116px; }
    .drawer-trigger { min-width: 78px; padding: 0 14px; }
    .app-link { min-width: 72px; padding: 0 14px; }
    .card-grid, .card-grid.two, .card-grid.four, .split, .split.reverse, .footer-top { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .shelf-row { grid-template-columns: 58px 1fr; }
    .shelf-row a { grid-column: 2; justify-self: start; }
    .number-item { grid-template-columns: 46px 1fr; gap: 12px; }
    .number-item .num { font-size: 30px; }
    .search-panel { inset: 0; width: 100%; transform: none; background: var(--deep); overflow-y: auto; }
    body.search-open .search-panel { transform: none; }
    .search-card { min-height: 100%; border: 0; border-radius: 0; padding: 28px 16px 80px; box-shadow: none; background: var(--deep); }
    .mobile-bottom-nav { position: fixed; display: grid; grid-template-columns: repeat(5, 1fr); left: 0; right: 0; bottom: 0; z-index: 70; min-height: calc(48px + env(safe-area-inset-bottom)); padding-bottom: env(safe-area-inset-bottom); background: #0A0A0A; border-top: 1px solid var(--border-strong); }
    .mobile-bottom-nav a { min-height: 48px; display: flex; align-items: center; justify-content: center; font-size: 12px; color: var(--silver); }
    .mobile-bottom-nav a.is-current { background: var(--silver); color: var(--bg); font-weight: 700; }
    .footer-bottom { padding-bottom: 74px; }
    .contact-route { grid-template-columns: 1fr; gap: 4px; }
}
@media (max-width: 560px) {
    h1 { font-size: 24px; }
    h2 { font-size: 20px; }
    .shell { width: calc(100% - 32px); }
    .banner-slot { height: 260px; }
    .card-media { height: 180px; }
    .feature-media { height: 200px; }
    .home-cover-copy { text-align: left; }
    .brand-lockup, .action-row { justify-content: flex-start; }
    .section { margin-top: 28px; }
    .section-head { display: block; }
    .footer-top { gap: 28px; padding-top: 32px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}