:root {
  --bg: #1F1633;
  --bg-panel: #2A1F45;
  --bg-panel2: #372A5A;
  --border: #4B3A7C;
  --accent: #FF4FB0;
  --accent-dark: #D12E8C;
  --text: #F4EFFF;
  --text-muted: #A99BC9;
  --success: #C3F53C;
  --warn: #FFB547;
  --error: #FF5C6E;
  --violet: #8C6CF2;
  --violet-deep: #4E3891;
  --ink: #120C22;
  --line: rgba(75,58,124,.55);
  --hilite: rgba(244,239,255,.55);
  --glare: rgba(244,239,255,.06);
  --chip: rgba(42,31,69,.72);
  --field: rgba(91,62,158,.34);
  --dot: rgba(169,155,201,.26);
  --dot-faint: rgba(169,155,201,.14);
  --shadow-1: rgba(10,6,22,.42);
  --shadow-2: rgba(10,6,22,.62);
  --accent-soft: rgba(255,79,176,.14);
  --accent-glow: rgba(255,79,176,.5);
  --success-glow: rgba(195,245,60,.42);
  --clear: transparent;
  --grad-edge: linear-gradient(135deg,var(--accent) 0%,var(--success) 100%);
  --font-display: "Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body: "Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono: "JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --r-xs: 4px;
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 10px;
  --r-pill: 999px;
  --r-circle: 50%;
  --r-device: 30px;
  --r-screen: 21px;
  --r-chrome: 9px;
  --r-tiny: 2px;
  --gutter: 32px;
  --content-width: 1240px;
  --reading-width: 860px;
  --header-width: 1280px;
  --header-height: 64px;
  --space-xs: 8px;
  --space-sm: 14px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 72px;
  --speed: .18s;
  --shadow-panel: 0 2px 0 var(--shadow-1),0 14px 28px -10px var(--shadow-2),0 38px 64px -26px var(--shadow-2);
}
*,*::before,*::after { box-sizing:border-box; }
html { -webkit-text-size-adjust:100%; scroll-behavior:smooth; scroll-padding-top:24px; }
body {
  margin:0;
  min-height:100vh;
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  background-color:var(--bg);
  background-image:radial-gradient(ellipse 820px 400px at 50% 660px,var(--field),var(--clear) 70%),radial-gradient(circle,var(--dot) 0 1px,var(--clear) 1.6px),radial-gradient(circle,var(--dot-faint) 0 1px,var(--clear) 1.6px);
  background-size:auto,173px 173px,251px 251px;
  background-position:0 0,37px 61px,113px 19px;
  background-repeat:no-repeat,repeat,repeat;
  -webkit-font-smoothing:antialiased;
}
a { color:inherit; text-decoration:none; }
button,input,select,textarea { font:inherit; }
button { color:inherit; cursor:pointer; }
button:disabled { cursor:not-allowed; }
img { max-width:100%; height:auto; }
svg { max-width:100%; }
[hidden] { display:none !important; }
:focus-visible { outline:2px solid var(--success); outline-offset:4px; }
::selection { background:var(--accent); color:var(--ink); }
p { margin:0 0 1em; }
h1,h2,h3,h4 { margin:0 0 .6em; font-family:var(--font-display); font-weight:900; line-height:1.25; text-wrap:balance; overflow-wrap:normal; }
h1 { font-size:clamp(34px,3.4vw,48px); line-height:1.15; letter-spacing:-.005em; }
h2 { font-size:clamp(24px,2.4vw,34px); }
h3 { font-size:22px; }
ul,ol { padding-inline-start:1.5em; }
li + li { margin-top:.35em; }
code,kbd,pre { font-family:var(--font-mono); }
code { overflow-wrap:anywhere; color:var(--success); }
pre {
  max-width:100%;
  min-width:0;
  overflow-x:auto;
  padding:20px;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg);
  color:var(--text-muted);
  font-size:13px;
  line-height:1.7;
  overscroll-behavior-inline:contain;
}
pre code { color:inherit; white-space:pre; overflow-wrap:normal; word-break:normal; }
blockquote { margin-inline:0; }
hr { border:0; border-top:1px solid var(--border); margin-block:32px; }
.wrap { width:100%; max-width:var(--content-width); margin-inline:auto; padding-inline:var(--gutter); }
.reading { width:100%; max-width:var(--reading-width); margin-inline:auto; padding-inline:var(--gutter); }
main,section,article,div,nav,aside { min-width:0; }
.section { position:relative; padding-top:var(--space-xl); padding-bottom:var(--space-xl); }
.decorated,.hero { position:relative; overflow-x:clip; }
.prose { min-width:0; }
.prose h2 { margin-top:2.2em; }
.prose h3 { margin-top:1.5em; }
.prose a:not(.btn) { text-decoration:underline; text-underline-offset:4px; }
.prose p,.prose li { overflow-wrap:break-word; }
.keep { white-space:nowrap; }
.mono { font-family:var(--font-mono); }
.muted { color:var(--text-muted); }
.pink { color:var(--accent); }
.key { color:var(--success); }
.eyebrow { font-family:var(--font-mono); font-size:12px; color:var(--success); letter-spacing:.02em; margin-bottom:10px; }
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip-path:inset(50%); white-space:nowrap; border:0; }
.skip-link { position:fixed; top:8px; left:16px; z-index:100; transform:translateY(-160%); padding:10px 16px; background:var(--text); color:var(--bg); border-radius:var(--r-sm); }
.skip-link:focus { transform:none; }
.grain { position:fixed; inset:0; width:100%; height:100%; pointer-events:none; z-index:0; opacity:.24; }
.grain rect { fill:var(--text); }
body > main,body > footer { position:relative; z-index:1; }
.actions { display:flex; align-items:center; justify-content:center; gap:14px; flex-wrap:wrap; margin-bottom:14px; }
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:9px;
  min-height:46px; padding:10px 22px;
  border:1px solid var(--clear); border-radius:var(--r-sm);
  font-size:15px; font-weight:800; letter-spacing:.01em;
  background:var(--bg-panel2); color:var(--text);
  transition:transform var(--speed) ease,background-color var(--speed) ease,box-shadow var(--speed) ease;
}
.btn svg { width:17px; height:17px; flex-shrink:0; fill:none; stroke:currentColor; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; }
.btn-primary { background:var(--text); color:var(--bg); box-shadow:0 10px 24px -10px var(--shadow-2); }
.btn-primary:hover,.btn-primary.is-hover { transform:translateY(-1px); box-shadow:0 14px 28px -10px var(--shadow-2); }
.btn-ghost { border-color:var(--accent); color:var(--text); background:var(--bg-panel); }
.btn-ghost:hover,.btn-ghost.is-hover { background:var(--accent-soft); color:var(--text); }
.btn-accent { background:var(--accent); color:var(--ink); }
.btn:active { transform:translateY(1px); }
.btn.is-focus { outline:2px solid var(--success); outline-offset:4px; }
.btn:disabled,.btn[aria-disabled="true"] { opacity:.55; transform:none; }
.panel { min-width:0; padding:24px; border:1px solid var(--clear); border-radius:var(--r-lg); background:linear-gradient(var(--bg-panel),var(--bg-panel)) padding-box,var(--grad-edge) border-box; color:var(--text); box-shadow:var(--shadow-panel); }
.panel p:last-child { margin-bottom:0; }
.card-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:24px; }
.card-grid > * { min-width:0; }
.reveal { opacity:1; transform:none; }
.reveal.pending { opacity:0; transform:translateY(16px); }
.reveal.shown { opacity:1; transform:none; transition:opacity .55s ease,transform .55s ease; }

/* 顶栏独立宽版心，不与阅读版心共用。 */
.topbar,#site-header { position:relative; z-index:50; }
.header-shell {
  position:relative; display:flex; align-items:center; gap:24px;
  min-height:var(--header-height); margin-inline:auto; padding-inline:var(--gutter);
  max-width:min(100%,calc(var(--header-width) + var(--gutter) * 2));
}
.brand { display:flex; align-items:center; gap:10px; flex-shrink:0; }
.brand-mark { display:block; width:32px; height:32px; flex-shrink:0; }
.brand-name { font-family:var(--font-display); font-weight:900; font-size:18px; letter-spacing:.005em; }
.desktop-nav { margin-left:auto; min-width:0; }
.nav-list { display:flex; align-items:center; list-style:none; margin:0; padding:0; gap:2px; }
.nav-list li { margin:0; min-width:0; }
.nav-link { position:relative; display:flex; align-items:center; gap:7px; padding:8px 11px; font-size:14px; font-weight:600; color:var(--text-muted); border-radius:var(--r-sm); white-space:nowrap; transition:color var(--speed) ease,background-color var(--speed) ease; }
.nav-link svg { width:16px; height:16px; flex-shrink:0; fill:none; stroke:currentColor; stroke-width:1.7; stroke-linecap:round; stroke-linejoin:round; }
.nav-link:hover { color:var(--text); background:var(--chip); }
.nav-link[aria-current="page"] { color:var(--text); }
.nav-link[aria-current="page"] svg { color:var(--accent); }
.nav-link[aria-current="page"]::after { content:""; position:absolute; left:11px; right:11px; bottom:1px; height:2px; border-radius:var(--r-tiny); background:var(--accent); }
.header-tools { display:flex; align-items:center; gap:10px; flex-shrink:0; }
.language-box { position:relative; }
.lang { display:flex; align-items:center; gap:7px; min-height:34px; padding:0 12px; border:1px solid var(--border); border-radius:var(--r-sm); background:var(--chip); font-size:13px; font-weight:600; color:var(--text); white-space:nowrap; }
.lang svg { width:15px; height:15px; flex-shrink:0; fill:none; stroke:var(--text-muted); stroke-width:1.6; }
.caret { color:var(--text-muted); font-size:11px; }
.lang-short { display:none; }
.language-menu { position:absolute; top:calc(100% + 10px); right:0; min-width:180px; padding:6px; border:1px solid var(--border); border-radius:var(--r-md); background:var(--bg-panel); color:var(--text); box-shadow:var(--shadow-panel); }
.language-menu a { display:flex; align-items:center; min-height:44px; padding:8px 12px; border-radius:var(--r-sm); }
.language-menu a:hover,.language-menu a[aria-current] { background:var(--bg-panel2); color:var(--text); }
.menu-toggle { display:none; min-width:44px; min-height:44px; align-items:center; justify-content:center; border:1px solid var(--border); border-radius:var(--r-sm); background:var(--bg-panel); color:var(--text); }
.menu-toggle svg { width:22px; height:22px; fill:none; stroke:currentColor; stroke-width:1.8; stroke-linecap:round; }
.mobile-drawer { display:none; }
.nav-veil { position:fixed; inset:var(--header-height) 0 0; border:0; padding:0; background:var(--shadow-2); color:var(--text); z-index:40; }
html.nav-open { overflow:hidden; }

/* 页脚 */
.site-footer { position:relative; z-index:1; border-top:1px solid var(--border); padding-top:56px; padding-bottom:28px; }
.footer-grid { display:grid; grid-template-columns:1.3fr 1fr 1.2fr 1fr; gap:32px; }
.footer-grid > * { min-width:0; }
.footer-brand p { color:var(--text-muted); font-size:14px; margin-top:16px; max-width:32em; }
.footer-title { font-size:14px; margin-bottom:14px; }
.footer-links { list-style:none; margin:0; padding:0; }
.footer-links a { display:block; padding-block:6px; font-size:14px; color:var(--text-muted); overflow-wrap:break-word; }
.footer-links a:hover { color:var(--text); text-decoration:underline; text-underline-offset:4px; }
.footer-bottom { display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; margin-top:36px; padding-top:20px; border-top:1px solid var(--border); font-size:13px; color:var(--text-muted); }

/* 已确认首屏排版 */
.hero { z-index:1; }
.copy { position:relative; z-index:2; display:flex; flex-direction:column; align-items:center; text-align:center; padding-top:26px; }
.badge { display:inline-flex; align-items:center; gap:10px; min-height:28px; padding:3px 14px 3px 12px; border:1px solid var(--border); border-radius:var(--r-pill); background:var(--chip); color:var(--text-muted); font-size:12.5px; font-weight:600; margin-bottom:14px; max-width:100%; overflow-wrap:anywhere; }
.badge .mono { font-size:11.5px; color:var(--text); }
.badge .sep { width:1px; height:12px; background:var(--border); flex-shrink:0; }
.pulse,.status-dot { position:relative; width:8px; height:8px; border-radius:var(--r-circle); background:var(--success); flex-shrink:0; }
.pulse::after { content:""; position:absolute; inset:-4px; border-radius:var(--r-circle); border:1px solid var(--success); animation:breathe 2.4s ease-out infinite; }
@keyframes breathe { 0% { transform:scale(.55); opacity:.9; } 100% { transform:scale(1.7); opacity:0; } }
.headline { margin:0 0 14px; font-weight:900; }
.hl-top { display:block; font-size:clamp(34px,3.4vw,48px); line-height:1.1; letter-spacing:-.005em; margin-bottom:16px; }
.hl-pop { display:inline-block; margin-left:.06em; color:var(--accent); transform:translateY(.3em); }
.hl-sub { display:block; font-size:clamp(20px,2.1vw,30px); line-height:1.2; font-weight:800; }
.lede { max-width:880px; font-size:16px; line-height:1.62; color:var(--text-muted); margin-bottom:18px; }
.lede strong { color:var(--text); font-weight:700; }
.platforms { display:flex; align-items:center; justify-content:center; gap:10px; flex-wrap:wrap; }
.plat { display:inline-flex; align-items:center; gap:8px; min-height:32px; padding:4px 14px 4px 11px; border:1px solid var(--border); border-radius:var(--r-pill); background:var(--chip); color:var(--text-muted); font-size:13px; font-weight:600; transition:color var(--speed) ease,border-color var(--speed) ease; }
.plat svg { width:15px; height:15px; flex-shrink:0; }
.plat:hover { color:var(--text); border-color:var(--text-muted); }
.star { position:absolute; width:12px; height:12px; fill:none; stroke:var(--text-muted); stroke-width:1.4; stroke-linecap:round; opacity:.55; z-index:1; pointer-events:none; }
.st1 { top:46px; left:13%; }
.st2 { top:150px; left:22%; width:9px; height:9px; opacity:.4; }
.st3 { top:92px; right:16%; }
.st4 { top:236px; right:9%; width:9px; height:9px; opacity:.4; }
.st5 { top:330px; left:7%; width:10px; height:10px; }
.st6 { top:24px; right:31%; width:8px; height:8px; opacity:.35; }
.st7 { top:560px; right:4%; width:10px; height:10px; opacity:.4; }
.bay { position:relative; z-index:1; padding-top:14px; padding-bottom:96px; }
.bay h2 { margin:0; font-size:28px; }

@media (max-width:1279px) {
  .desktop-nav { display:none; }
  .header-tools { margin-left:auto; }
  .menu-toggle { display:flex; }
  .mobile-drawer:not([hidden]) { display:block; position:absolute; top:100%; left:0; right:0; max-height:calc(100dvh - var(--header-height)); overflow-y:auto; overscroll-behavior:contain; padding:16px var(--gutter) 24px; background:var(--bg-panel); color:var(--text); border-bottom:1px solid var(--border); box-shadow:var(--shadow-panel); z-index:2; }
  .mobile-drawer .nav-list { display:block; }
  .mobile-drawer .nav-link,.mobile-drawer .drawer-languages a { display:flex; width:100%; align-items:center; min-height:44px; padding:12px; white-space:normal; }
  .drawer-languages { border-top:1px solid var(--border); margin-top:16px; padding-top:12px; }
  .drawer-languages a[aria-current] { color:var(--success); }
}
@media (max-width:768px) {
  :root { --gutter:18px; }
  h1,.hl-top { font-size:clamp(24px,5vw,30px); }
  .hl-sub { font-size:20px; }
  .copy { padding-top:18px; }
  .lede { font-size:15px; }
  .footer-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .section { padding-top:48px; padding-bottom:48px; }
  .bay h2 { font-size:22px; }
}
@media (max-width:640px) {
  .tilt,.tilt-left,.tilt-right,[data-tilt] { transform:none !important; }
  .card-grid { grid-template-columns:minmax(0,1fr); }
  .panel { padding:20px; }
  .header-shell { gap:12px; }
  .header-tools { margin-left:auto; gap:8px; }
  .lang-full { display:none; }
  .lang-short { display:inline; }
  .lang { min-height:44px; padding-inline:10px; }
  .brand-name { font-size:16px; }
  .footer-grid { grid-template-columns:minmax(0,1fr); gap:24px; }
  .footer-bottom { display:block; }
  .footer-bottom a { display:inline-block; padding-top:10px; }
  .platforms { gap:8px; }
}
@media (prefers-reduced-motion:reduce) {
  html { scroll-behavior:auto; }
  *,*::before,*::after { animation:none !important; transition:none !important; }
  .reveal.pending { opacity:1; transform:none; }
}