:root {
  color-scheme: dark;
  --bg: #030406;
  --bg-soft: #080b10;
  --ink: #f6f7f9;
  --muted: #a9b2bf;
  --faint: #687483;
  --panel: rgba(12, 17, 24, .9);
  --panel-strong: #111822;
  --line: rgba(174, 197, 224, .18);
  --line-strong: rgba(174, 197, 224, .36);
  --platinum: #f1f4f7;
  --gold: #d9ad5a;
  --amber: #ffc66b;
  --cyan: #67e7ff;
  --red: #ff536a;
  --green: #5dffb4;
  --shadow: 0 28px 90px rgba(0, 0, 0, .58);
  --header-h: 76px;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); background: var(--bg); }
body { min-height: 100vh; margin: 0; overflow-x: hidden; color: var(--ink); background: var(--bg); }
body::before { content: ""; position: fixed; inset: 0; z-index: -3; pointer-events: none; background: url("/assets/hero-bg-v2.png") center top / cover no-repeat fixed; opacity: .68; }
body::after { content: ""; position: fixed; inset: 0; z-index: 60; pointer-events: none; opacity: .1; background: repeating-linear-gradient(180deg, transparent 0 8px, rgba(255,255,255,.08) 9px, transparent 10px); mix-blend-mode: screen; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
h1, h2, h3, p { overflow-wrap: anywhere; }
h1, h2, h3 { margin: 0; line-height: 1.06; letter-spacing: 0; }
p { line-height: 1.7; }
.site-header { position: sticky; top: 0; z-index: 50; min-height: var(--header-h); display: flex; align-items: center; justify-content: space-between; gap: 22px; padding: 10px clamp(18px, 5vw, 72px); border-bottom: 1px solid var(--line); background: rgba(3, 4, 6, .92); backdrop-filter: blur(18px); }
.site-header::after { content: ""; position: absolute; left: 0; bottom: -1px; width: var(--scroll-progress, 0%); height: 2px; background: var(--cyan); box-shadow: 0 0 24px rgba(103, 231, 255, .48); transition: width 120ms linear; }
.brand { min-width: 0; display: inline-flex; align-items: center; gap: 10px; font-weight: 900; }
.brand picture { width: 60px; height: 60px; display: grid; place-items: center; flex: 0 0 auto; overflow: hidden; }
.brand img { width: 100%; height: 100%; object-fit: contain; filter: drop-shadow(0 0 12px rgba(217, 173, 90, .22)); }
.brand > span { max-width: 11em; overflow: hidden; color: rgba(249, 244, 232, .94); font-size: 15px; line-height: 1.15; text-overflow: ellipsis; white-space: nowrap; }
.nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 8px; color: var(--muted); font-size: 14px; white-space: nowrap; }
.nav-links a { min-height: 40px; display: inline-flex; align-items: center; padding: 0 14px; border: 1px solid transparent; clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%); background: rgba(255, 255, 255, .05); transition: transform 180ms ease, color 180ms ease, background 180ms ease, border-color 180ms ease; }
.nav-links a:hover { color: var(--platinum); border-color: rgba(103, 231, 255, .36); background: rgba(103, 231, 255, .1); transform: translateY(-1px); }
.nav-links a.is-current { color: var(--platinum); border-color: rgba(217, 173, 90, .5); background: rgba(217, 173, 90, .12); box-shadow: inset 0 -2px 0 var(--gold); }
.download-hero { position: relative; isolation: isolate; min-height: calc(100svh - var(--header-h)); overflow: hidden; display: grid; align-items: center; justify-items: center; padding: 58px clamp(18px, 6vw, 92px); text-align: center; background: #05070a url("/assets/hero-bg-v2.png") center / cover no-repeat; }
.download-hero::before { content: ""; position: absolute; inset: 0; z-index: -2; background: rgba(3, 5, 8, .24); }
.download-hero::after { content: ""; position: absolute; left: 22%; right: 22%; bottom: 34px; z-index: -1; height: 1px; background: rgba(103, 231, 255, .42); box-shadow: 0 0 22px rgba(103, 231, 255, .3); }
.hero-surface { position: relative; z-index: 1; width: min(940px, 100%); display: flex; flex-direction: column; align-items: center; margin: 0 auto; }
.hero-surface::before { display: none; }
.hero-brand-lockup { min-height: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; }
.hero-logo-mark { width: 124px; height: 124px; flex: 0 0 auto; object-fit: contain; filter: drop-shadow(0 18px 32px rgba(0, 0, 0, .34)); }
.hero-kicker { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 10px; }
.eyebrow { margin: 0 0 16px; color: var(--cyan); font-size: 12px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.hero-kicker .eyebrow { margin: 0; }
.scene-tag { min-height: 28px; display: inline-flex; align-items: center; padding: 0 9px; color: var(--bg); background: var(--platinum); clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%); font-size: 12px; font-weight: 900; }
.hero-surface h1 { max-width: 920px; margin: 20px auto 0; font-size: clamp(46px, 8vw, 84px); font-weight: 950; text-align: center; text-shadow: 0 0 22px rgba(103, 231, 255, .16); }
.hero-copy { max-width: 720px; margin: 20px auto 0; color: var(--muted); font-size: 18px; text-align: center; }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 30px; }
.button, .text-button { position: relative; min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid var(--line); border-radius: 0; cursor: pointer; transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease, filter 180ms ease; }
.button { padding: 0 24px; clip-path: polygon(14px 0, 100% 0, calc(100% - 14px) 100%, 0 100%); font-weight: 900; }
.button:hover, .text-button:not(:disabled):hover { transform: translateY(-2px); }
.button:active, .text-button:active { transform: scale(.98); }
.button.primary { border-color: rgba(241, 244, 247, .66); color: #090a0c; background: var(--platinum); box-shadow: 0 16px 38px rgba(217, 173, 90, .18); }
.button.primary:hover { background: var(--amber); }
.button.secondary { color: var(--ink); border-color: var(--line-strong); background: rgba(255, 255, 255, .06); }
.button.secondary:hover { border-color: rgba(103, 231, 255, .52); background: rgba(103, 231, 255, .1); }
.button.tertiary { color: var(--amber); border-color: rgba(217, 173, 90, .54); background: rgba(217, 173, 90, .08); }
.button.tertiary:hover { color: var(--platinum); border-color: rgba(255, 198, 107, .74); background: rgba(217, 173, 90, .16); }
.hero-service-strip { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; width: min(820px, 100%); margin: 42px auto 0; }
.hero-service-strip a { min-height: 78px; display: grid; align-content: center; gap: 8px; padding: 14px 16px; border: 1px solid var(--line); clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%); background: rgba(12, 17, 24, .78); text-align: center; transition: transform 180ms ease, border-color 180ms ease, background 180ms ease; }
.hero-service-strip a:hover { border-color: rgba(103, 231, 255, .48); background: rgba(103, 231, 255, .1); transform: translateY(-2px); }
.hero-service-strip span { color: var(--faint); font-size: 11px; font-weight: 800; }
.hero-service-strip strong { color: var(--platinum); font-size: 19px; }
.section { width: min(100% - 36px, 1180px); margin: 0 auto; padding: 88px 0; }
.section-heading { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 22px; margin-bottom: 22px; }
.section-heading h2 { font-size: clamp(32px, 5vw, 54px); font-weight: 920; }
.section-heading > div > p:last-child, .section-heading > p:last-child { max-width: 560px; margin: 14px 0 0; color: var(--muted); font-size: 15px; }
.library-tools { display: flex; align-items: center; gap: 12px; }
.text-button { padding: 0 14px; color: var(--muted); background: rgba(255, 255, 255, .04); font-size: 13px; }
.text-button:not(:disabled):hover { border-color: rgba(103, 231, 255, .52); color: var(--cyan); background: rgba(103, 231, 255, .08); }
.text-button:disabled { opacity: .34; cursor: not-allowed; }
.count { color: var(--muted); font-size: 13px; white-space: nowrap; }
.breadcrumbs { min-height: 26px; display: flex; align-items: center; flex-wrap: wrap; gap: 7px; margin: 8px 0 14px; color: var(--muted); font-size: 12px; }
.breadcrumbs button { padding: 0; border: 0; background: transparent; color: inherit; cursor: pointer; }
.breadcrumbs button:hover { color: var(--cyan); }
.search-box { height: 54px; display: flex; align-items: center; gap: 10px; padding: 0 16px; border: 1px solid var(--line); background: rgba(12, 17, 24, .9); clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%); }
.search-box:focus-within { border-color: rgba(103, 231, 255, .56); box-shadow: 0 0 0 3px rgba(103, 231, 255, .1); }
.search-box span { color: var(--cyan); font-size: 24px; line-height: 1; }
.search-box input { width: 100%; border: 0; outline: 0; background: transparent; color: var(--ink); font-size: 15px; }
.search-box input::placeholder { color: var(--faint); }
.library-filters { display: grid; grid-template-columns: minmax(0, 1fr) 190px; gap: 10px; }
.filter-box { min-height: 54px; display: flex; align-items: center; gap: 10px; padding: 0 14px; border: 1px solid var(--line); background: rgba(12, 17, 24, .9); clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%); color: var(--faint); font-size: 12px; }
.filter-box select { min-width: 0; flex: 1; border: 0; outline: 0; background: transparent; color: var(--ink); cursor: pointer; font-size: 14px; }
.filter-box option { color: #101319; background: #eef1f5; }
.status { padding: 30px 0; color: var(--muted); }
.resource-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 14px; }
.resource-card { min-height: 92px; display: flex; align-items: center; gap: 14px; padding: 16px; border: 1px solid var(--line); clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px); background: rgba(12, 17, 24, .9); transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease; }
.resource-card:hover { border-color: rgba(103, 231, 255, .46); background: rgba(17, 24, 34, .98); transform: translateY(-2px); box-shadow: 0 18px 46px rgba(0, 0, 0, .28); }
.entry-main { min-width: 0; flex: 1; display: flex; align-items: center; gap: 14px; border: 0; background: transparent; color: inherit; text-align: left; cursor: pointer; }
.file-icon { flex: 0 0 48px; width: 48px; height: 48px; display: grid; place-items: center; border: 1px solid rgba(103, 231, 255, .3); color: var(--cyan); background: rgba(103, 231, 255, .08); font-size: 10px; font-weight: 900; letter-spacing: .04em; }
.folder-icon { border-color: rgba(217, 173, 90, .42); color: var(--amber); background: rgba(217, 173, 90, .1); }
.file-meta { min-width: 0; flex: 1; display: grid; gap: 6px; }
.file-meta strong { overflow: hidden; color: var(--platinum); font-size: 15px; font-weight: 750; text-overflow: ellipsis; white-space: nowrap; }
.file-meta small { color: var(--muted); font-size: 12px; }
.entry-date { color: var(--muted); font-size: 12px; white-space: nowrap; }
.entry-arrow { color: var(--cyan); font-size: 20px; }
.download { min-height: 42px; display: inline-flex; align-items: center; gap: 7px; padding: 0 14px; border: 1px solid rgba(217, 173, 90, .55); color: #090a0c; background: var(--amber); clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%); font-size: 13px; font-weight: 900; white-space: nowrap; transition: filter 180ms ease, transform 180ms ease; }
.download:hover { filter: brightness(1.1); transform: translateY(-1px); }
.download:active { transform: scale(.97); }
.download.disabled { opacity: .34; pointer-events: none; }
.empty { grid-column: 1 / -1; padding: 34px 0; color: var(--muted); }
.history-section { padding-top: 22px; }
.download-history { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.history-item { min-width: 0; display: flex; align-items: center; gap: 12px; padding: 14px; border: 1px solid var(--line); background: rgba(12, 17, 24, .72); }
.history-icon { flex: 0 0 38px; width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid rgba(217, 173, 90, .36); color: var(--amber); background: rgba(217, 173, 90, .08); font-size: 9px; font-weight: 900; }
.history-meta { min-width: 0; display: grid; gap: 5px; }
.history-meta strong { overflow: hidden; color: var(--platinum); font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }
.history-meta small { overflow: hidden; color: var(--muted); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.history-empty { grid-column: 1 / -1; padding: 20px 0; color: var(--faint); font-size: 13px; }
.signal-section { padding-top: 48px; }
.signal-section .section-heading { display: block; max-width: 760px; margin: 0 auto 36px; text-align: center; }
.signal-section .section-heading > p:last-child { max-width: 620px; margin: 16px auto 0; }
.signal-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.signal-card { min-height: 190px; display: grid; align-content: center; justify-items: center; gap: 14px; padding: 24px; border: 1px solid var(--line); background: rgba(12, 17, 24, .76); text-align: center; clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px); }
.signal-card:hover { border-color: rgba(217, 173, 90, .46); }
.signal-card > span { color: var(--gold); font-size: 38px; font-weight: 900; }
.signal-card strong { font-size: 20px; }
.signal-card p { margin: 0; color: var(--muted); font-size: 13px; }
.site-footer { display: flex; justify-content: space-between; gap: 20px; width: min(100% - 36px, 1180px); margin: 0 auto; padding: 24px 0 40px; border-top: 1px solid var(--line); color: var(--faint); font-size: 12px; }
.site-footer p { margin: 0; }
.site-footer p:last-child { display: flex; gap: 14px; }
.site-footer a:hover { color: var(--cyan); }
.mobile-dock { display: none; }
.temporary-badge { color: var(--amber); font-size: 11px; font-weight: 800; letter-spacing: .12em; }
.temporary-page .site-header { justify-content: space-between; }
.temporary-gate { min-height: calc(100svh - var(--header-h)); display: grid; place-items: center; padding-top: 72px; padding-bottom: 72px; }
.temporary-gate[hidden], #temporary-library[hidden] { display: none !important; }
.temporary-gate-card { width: min(100%, 560px); padding: clamp(28px, 6vw, 58px); border: 1px solid var(--line); background: rgba(12, 17, 24, .88); box-shadow: var(--shadow); text-align: center; clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px); }
.temporary-gate-card h1 { font-size: clamp(34px, 6vw, 58px); }
.temporary-gate-card .hero-copy { font-size: 15px; }
.temporary-meta { margin: 12px 0 26px; color: var(--amber); font-size: 13px; }
.temporary-login { display: grid; gap: 14px; text-align: left; }
.temporary-login label { display: grid; gap: 8px; color: var(--muted); font-size: 13px; }
.temporary-login input { width: 100%; min-height: 48px; border: 1px solid var(--line); border-radius: 0; padding: 0 14px; outline: 0; background: rgba(255, 255, 255, .05); color: var(--ink); }
.temporary-login input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(103, 231, 255, .1); }
.temporary-login .button { width: 100%; margin-top: 4px; }
.temporary-history-section { padding-top: 32px; }
.temporary-page .mobile-dock a:first-child { color: var(--ink); background: rgba(255, 255, 255, .08); }
.temporary-page .mobile-dock a:last-child { color: #090a0c; background: var(--amber); }
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 520ms ease, transform 520ms ease; }
.js-ready .reveal.is-visible { opacity: 1; transform: none; }
.fx-particles { position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: .56; mix-blend-mode: screen; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
@media (max-width: 820px) {
  .download-hero { min-height: 680px; padding: 54px 18px; }
  .hero-brand-lockup { gap: 12px; }
  .hero-logo-mark { width: 82px; height: 82px; }
  .hero-service-strip, .resource-grid, .signal-grid { grid-template-columns: 1fr; }
  .library-filters, .download-history { grid-template-columns: 1fr; }
  .section { width: min(100% - 28px, 1180px); padding: 66px 0; }
  .section-heading { grid-template-columns: 1fr; align-items: start; }
  .library-tools { width: 100%; justify-content: space-between; }
  .entry-date { display: none; }
}
@media (max-width: 520px) {
  :root { --header-h: 66px; }
  .site-header { padding: 8px 14px; }
  .brand picture { width: 48px; height: 48px; }
  .brand > span { font-size: 13px; }
  .nav-links { gap: 4px; font-size: 12px; }
  .nav-links a { min-height: 36px; padding: 0 8px; }
  .download-hero { min-height: 620px; padding: 42px 14px; }
  .hero-brand-lockup { min-height: 74px; }
  .hero-logo-mark { width: 66px; height: 66px; }
  .hero-surface h1 { font-size: 42px; }
  .hero-copy { font-size: 16px; }
  .hero-actions .button { width: 100%; }
  .hero-service-strip a { min-height: 66px; }
  .resource-card { padding: 12px; }
  .download { padding: 0 11px; }
  .site-footer { display: grid; padding-bottom: 96px; }
  .site-footer p:last-child { justify-content: space-between; }
  .mobile-dock { position: fixed; left: 10px; right: 10px; bottom: calc(10px + env(safe-area-inset-bottom)); z-index: 70; min-height: 58px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; padding: 8px; border: 1px solid rgba(255, 255, 255, .16); background: rgba(5, 6, 7, .88); backdrop-filter: blur(18px); box-shadow: 0 18px 60px rgba(0, 0, 0, .45); }
  .mobile-dock a { min-height: 42px; display: inline-flex; align-items: center; justify-content: center; color: var(--ink); background: rgba(255, 255, 255, .08); clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%); font-size: 12px; font-weight: 900; }
  .mobile-dock a:first-child { color: #090a0c; background: var(--amber); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: 1ms !important; }
  .js-ready .reveal { opacity: 1; transform: none; }
}