:root {
  --bg: #FFFFFF;
  --bg-panel: #F4F6FB;
  --bg-panel-2: #EBEFF7;
  --border: #DDE3EE;
  --border-strong: #C9D2E3;
  --accent: #0B5CFF;
  --accent-dark: #0841C2;
  --text: #0E2A47;
  --text-muted: #556479;
  --text-faint: #8C99AB;
  --success: #12A150;
  --warn: #D98E04;
  --error: #E0353B;
  --success-ink: #087638;
  --warn-ink: #855600;
  --error-ink: #B52228;
  --on-accent: #FFFFFF;
  --geo-violet: #6A4BFF;
  --geo-pink: #D63CF5;
  --accent-soft: rgba(11,92,255,.08);
  --accent-ring: rgba(11,92,255,.30);
  --ghost-fill: rgba(255,255,255,.62);
  --veil: rgba(14,42,71,.24);
  --clear: transparent;
  --grad-geo: linear-gradient(90deg,var(--accent) 0%,var(--geo-violet) 48%,var(--geo-pink) 100%);
  --grad-mark: linear-gradient(145deg,var(--accent) 0%,var(--accent-dark) 100%);
  --shadow-float: 0 24px 60px rgba(14,42,71,.10),0 2px 6px rgba(14,42,71,.05);
  --shadow-tight: 0 6px 18px rgba(14,42,71,.06);
  --shadow-btn: 0 10px 24px rgba(11,92,255,.26);
  --shadow-chip: 0 4px 10px rgba(11,92,255,.22);
  --font-display: 'Inter','Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  --font-body: 'Noto Sans SC','Inter','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  --font-mono: 'JetBrains Mono',ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
  --weight-body: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-heavy: 800;
  --weight-display: 900;
  --r-xs: 8px;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 24px;
  --r-2xl: 28px;
  --r-geo: 128px;
  --r-geo-small: 96px;
  --r-circle: 50%;
  --r-pill: 999px;
  --gutter: 24px;
  --reading-width: 1120px;
  --wide-width: 1312px;
  --topbar-h: 72px;
  --peek: 52px;
  --motion-fast: .2s;
  --motion-reveal: .65s;
  --ease-rise: cubic-bezier(.2,.7,.2,1);
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 24px; }
html.nav-open { overflow: hidden; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: var(--weight-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
[hidden] { display: none !important; }
img { display: block; max-width: 100%; height: auto; }
svg { display: block; flex-shrink: 0; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
button, input, select, textarea { max-width: 100%; }
button { color: var(--text); }
ul, ol { margin: 0; padding: 0; list-style: none; }
p, h1, h2, h3, h4, dl, dd, figure, blockquote { margin: 0; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--text);
  line-height: 1.3;
  text-wrap: balance;
  overflow-wrap: break-word;
}
h1 { font-size: clamp(34px,3.4vw,48px); font-weight: var(--weight-display); letter-spacing: -.015em; }
h2 { font-size: clamp(26px,2.6vw,36px); font-weight: var(--weight-display); letter-spacing: -.01em; }
h3 { font-size: 21px; font-weight: var(--weight-heavy); }
code { font-family: var(--font-mono); font-size: .88em; overflow-wrap: anywhere; }
pre {
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  padding: 20px;
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg-panel);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.85;
  tab-size: 2;
}
pre code { font-size: inherit; overflow-wrap: normal; word-break: normal; white-space: pre; }
:focus-visible { outline: 3px solid var(--accent-ring); outline-offset: 3px; border-radius: var(--r-xs); }
::selection { background: var(--accent); color: var(--on-accent); }
.wrap {
  width: 100%;
  max-width: calc(var(--reading-width) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.frame {
  width: 100%;
  max-width: calc(var(--wide-width) + 128px);
  margin-inline: auto;
  padding-inline: 64px;
}
.section { padding-top: 100px; padding-bottom: 100px; }
.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-head p { margin-top: 16px; color: var(--text-muted); line-height: 1.85; }
.stack { display: grid; gap: 24px; }
.grid-two { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; }
.grid-three { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 24px; }
.grid-two > *, .grid-three > *, .hero-grid > *, .footer-grid > *, .stack > * { min-width: 0; }
.keep { white-space: nowrap; }
.muted { color: var(--text-muted); }
.accent { color: var(--accent); }
.text-link { color: var(--accent); text-decoration: underline; text-underline-offset: 5px; }
.text-link:hover { color: var(--accent-dark); }
.icon { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.skip-jump {
  position: absolute; left: 16px; top: 12px; z-index: 100;
  opacity: 0; pointer-events: none;
  background: var(--accent); color: var(--on-accent);
  padding: 10px 16px; border-radius: var(--r-sm); font-weight: var(--weight-semibold);
}
.skip-jump:focus { opacity: 1; pointer-events: auto; }
.press {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 54px; padding: 12px 26px; border: 1.5px solid var(--clear);
  border-radius: var(--r-md); font-family: var(--font-body); font-size: 16px;
  font-weight: var(--weight-bold); letter-spacing: .01em; line-height: 1.5;
  text-align: center; vertical-align: middle;
  transition: background-color var(--motion-fast),border-color var(--motion-fast),color var(--motion-fast),transform var(--motion-fast);
}
.press svg { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.press-solid { background: var(--accent); color: var(--on-accent); box-shadow: var(--shadow-btn); }
.press-solid:hover, .press-solid.is-hover { background: var(--accent-dark); color: var(--on-accent); }
.press-line { border-color: var(--border-strong); background: var(--bg); color: var(--text); }
.press-line:hover, .press-line.is-hover { border-color: var(--accent); color: var(--accent); }
.press-quiet { background: var(--bg-panel); color: var(--accent-dark); }
.press:active, .press.is-active { transform: scale(.97); }
.press:disabled, .press[aria-disabled="true"] { background: var(--bg-panel-2); color: var(--text-muted); border-color: var(--border); box-shadow: none; cursor: not-allowed; transform: none; }
.press-small { min-height: 44px; padding: 9px 18px; font-size: 14px; }
.cta-pair { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 28px; }
.card, .panel {
  min-width: 0; padding: 30px 28px; border-radius: var(--r-lg);
  background: var(--bg-panel); color: var(--text);
}
.card h3, .panel h3 { margin-bottom: 10px; }
.card p, .panel p { color: var(--text-muted); }
.card-float { background: var(--bg); color: var(--text); border: 1px solid var(--border); box-shadow: var(--shadow-float); border-radius: var(--r-xl); }
.panel-deep { background: var(--bg-panel-2); color: var(--text); }
.prose, .article-body { min-width: 0; line-height: 1.95; }
.prose p, .article-body p { margin-block: 18px; }
.prose h2, .article-body h2 { margin-top: 56px; margin-bottom: 20px; }
.prose h3, .article-body h3 { margin-top: 32px; margin-bottom: 14px; }
.prose ul, .article-body ul { list-style: disc; padding-left: 1.5em; margin-block: 20px; }
.prose ol, .article-body ol { list-style: decimal; padding-left: 1.5em; margin-block: 20px; }
.prose li, .article-body li { padding-left: .2em; margin-block: 8px; }
.prose a, .article-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; }
.prose pre, .article-body pre { margin-block: 24px; }
.prose :not(pre) > code, .article-body :not(pre) > code { background: var(--bg-panel); color: var(--accent-dark); padding: 2px 5px; border-radius: var(--r-xs); }
.reveal { opacity: 1; transform: none; }
html.reveal-ready .reveal:not(.shown) { opacity: 0; transform: translateY(20px); }
html.reveal-ready .reveal { transition: opacity var(--motion-reveal) ease,transform var(--motion-reveal) var(--ease-rise); }
html.reveal-ready .reveal.shown { opacity: 1; transform: none; }

/* 页头独立宽版心，不复用正文阅读宽度。 */
.topbar { position: relative; z-index: 50; height: var(--topbar-h); background: var(--bg); color: var(--text); border-bottom: 1px solid var(--border); }
.header-frame {
  width: 100%; max-width: min(100%,calc(1280px + var(--gutter) * 2));
  padding-inline: var(--gutter); margin-inline: auto;
}
.topbar-row { height: 100%; display: flex; align-items: center; gap: 44px; }
.brandmark { display: inline-flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brandmark img { width: 38px; height: 38px; flex-shrink: 0; }
.brandmark-name { font-family: var(--font-display); font-weight: var(--weight-display); font-size: 19px; letter-spacing: -.01em; color: var(--text); }
.desktop-nav { min-width: 0; }
.navrail { display: flex; align-items: center; gap: 2px; list-style: none; margin: 0; padding: 0; }
.navrail-link {
  display: flex; align-items: center; justify-content: center; gap: 7px;
  min-height: 44px; padding: 8px 12px; border-radius: var(--r-sm);
  font-size: 15px; font-weight: var(--weight-medium); color: var(--text-muted);
  transition: background-color var(--motion-fast),color var(--motion-fast);
}
.navrail-link svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.navrail-link:hover { background: var(--bg-panel); color: var(--text); }
.navrail-link[aria-current="page"] { background: var(--accent-soft); color: var(--accent); font-weight: var(--weight-semibold); }
.header-tools { margin-left: auto; display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.language-box { position: relative; }
.lang-pick {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  min-height: 38px; padding: 7px 12px;
  border: 1px solid var(--border); border-radius: var(--r-pill);
  background: var(--bg); color: var(--text); font-family: var(--font-body); font-size: 14px; font-weight: var(--weight-medium);
  white-space: nowrap; list-style: none;
}
.lang-pick::-webkit-details-marker { display: none; }
.lang-pick svg { width: 17px; height: 17px; fill: none; stroke: var(--text-muted); stroke-width: 1.6; }
.lang-pick:hover { border-color: var(--border-strong); }
.lang-short { display: none; }
.language-menu {
  position: absolute; top: calc(100% + 10px); right: 0; min-width: 180px;
  padding: 8px; border: 1px solid var(--border); border-radius: var(--r-md);
  background: var(--bg); color: var(--text); box-shadow: var(--shadow-float); z-index: 5;
}
.language-menu a { display: flex; align-items: center; min-height: 44px; padding: 8px 12px; border-radius: var(--r-xs); }
.language-menu a:hover, .language-menu a[aria-current="true"] { background: var(--accent-soft); color: var(--accent-dark); }
.menu-toggle {
  display: none; align-items: center; justify-content: center;
  min-width: 44px; min-height: 44px; padding: 10px;
  border: 1px solid var(--border); border-radius: var(--r-sm);
  background: var(--bg); color: var(--text);
}
.menu-toggle svg { width: 22px; height: 22px; }
.mobile-drawer {
  position: absolute; top: var(--topbar-h); left: 0; right: 0; z-index: 3;
  max-height: calc(100dvh - var(--topbar-h)); overflow-y: auto; overscroll-behavior: contain;
  padding: 16px var(--gutter) 28px; background: var(--bg); color: var(--text);
  border-bottom: 1px solid var(--border); box-shadow: var(--shadow-float);
}
.mobile-drawer .navrail { display: flex; flex-direction: column; align-items: stretch; gap: 4px; }
.mobile-drawer .navrail-link { justify-content: flex-start; width: 100%; min-height: 48px; padding: 12px; }
.drawer-languages { border-top: 1px solid var(--border); margin-top: 16px; padding-top: 12px; }
.drawer-languages a { display: flex; align-items: center; width: 100%; min-height: 44px; padding: 10px 12px; }
.drawer-languages a[aria-current="true"] { color: var(--accent); }
.nav-veil { position: fixed; inset: var(--topbar-h) 0 0; z-index: 1; border: 0; background: var(--veil); color: var(--text); }
.static-mobile { display: none; }

/* 页脚 */
.site-footer { padding-top: 72px; padding-bottom: 28px; border-top: 1px solid var(--border); background: var(--bg); color: var(--text); }
.footer-grid { display: grid; grid-template-columns: 1.35fr 1fr 1.25fr .8fr; gap: 40px; }
.footer-brand p { max-width: 26em; margin-top: 20px; font-size: 14px; line-height: 1.9; color: var(--text-muted); }
.footer-title { font-size: 15px; font-weight: var(--weight-bold); margin-bottom: 16px; }
.footer-links { display: grid; gap: 10px; }
.footer-links a { display: inline-block; padding-block: 3px; color: var(--text-muted); font-size: 14px; overflow-wrap: break-word; }
.footer-links a:hover { color: var(--accent); }
.footer-links a[aria-current="true"] { color: var(--accent-dark); }
.footer-bottom { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 13px; }
.legal-links { display: flex; flex-wrap: wrap; gap: 18px; }
.legal-links a:hover { color: var(--accent); }

/* 已确认首屏：保留三行标题、45/55 构图和原始装置尺度。 */
.hero-sheet {
  position: relative; overflow: hidden;
  min-height: calc(100vh - var(--topbar-h) - var(--peek));
  min-height: calc(100svh - var(--topbar-h) - var(--peek));
  display: grid; align-content: center; padding-top: 44px; padding-bottom: 40px;
  background: var(--bg); color: var(--text);
}
.hero-grid { display: grid; grid-template-columns: 45fr 55fr; gap: 40px; align-items: center; }
.hero-copy { position: relative; z-index: 3; }
.status-pill {
  display: inline-flex; align-items: center; gap: 10px; max-width: 100%;
  padding: 6px 15px 6px 12px; border-radius: var(--r-pill);
  background: var(--accent-soft); color: var(--accent-dark);
  font-size: 13.5px; font-weight: var(--weight-semibold); letter-spacing: .01em; margin-bottom: 24px;
}
.status-dot { position: relative; width: 8px; height: 8px; flex-shrink: 0; }
.status-dot::before, .status-dot::after { content: ""; position: absolute; inset: 0; border-radius: var(--r-circle); background: var(--accent); color: var(--on-accent); }
.status-dot::after { opacity: 0; animation: dot-breathe 2.4s ease-out .5s 3; }
.hero-title { font-size: clamp(30px,3.4vw,48px); line-height: 1.18; margin-bottom: 32px; }
.hero-title-line { display: block; }
.hero-title em { font-style: normal; color: var(--accent); }
.lede { max-width: 31em; font-size: 16.5px; line-height: 1.9; color: var(--text-muted); margin-bottom: 30px; }
.lede strong { color: var(--text); font-weight: var(--weight-bold); }
.os-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.os-row-label { font-size: 13px; font-weight: var(--weight-semibold); color: var(--text-muted); letter-spacing: .04em; }
.os-list { display: flex; gap: 8px; flex-wrap: wrap; }
.os-chip {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  min-height: 36px; padding: 6px 13px 6px 11px;
  border: 1px solid var(--border); border-radius: var(--r-pill);
  background: var(--bg); color: var(--text); font-size: 13.5px; font-weight: var(--weight-semibold);
}
.os-chip svg { width: 15px; height: 15px; color: var(--text-muted); }
.os-chip:hover { border-color: var(--accent); color: var(--accent); }
.os-chip:hover svg { color: var(--accent); }
.import-stage { position: relative; padding-top: 28px; z-index: 1; }
.geo-field { position: absolute; inset: 0; z-index: 0; pointer-events: none; transform-origin: 72% 28%; animation: geo-drift 10s ease-in-out infinite alternate; }
.geo-diamond { position: absolute; width: 640px; height: 640px; top: -356px; right: -196px; border-radius: var(--r-geo); background: var(--accent); color: var(--on-accent); transform: rotate(45deg); }
.geo-capsule { position: absolute; width: 520px; height: 150px; left: 400px; top: 330px; border-radius: var(--r-pill); background: var(--grad-geo); color: var(--text); transform: rotate(-50deg); }
.sheet-ghost { position: absolute; z-index: 1; top: 0; left: 38px; right: 38px; bottom: 44px; border-radius: var(--r-xl); background: var(--ghost-fill); color: var(--text); border: 1px solid var(--border); box-shadow: var(--shadow-tight); animation: rise-in 1s var(--ease-rise) .28s both; }
.import-win { position: relative; z-index: 2; background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: var(--r-xl); box-shadow: var(--shadow-float); animation: rise-in .9s var(--ease-rise) .1s both; }
.win-head { display: flex; align-items: center; gap: 18px; height: 66px; padding-inline: 26px; border-bottom: 1px solid var(--border); }
.win-lights { display: flex; gap: 7px; }
.win-lights i { width: 11px; height: 11px; border-radius: var(--r-circle); background: var(--bg-panel-2); color: var(--text); border: 1px solid var(--border); }
.win-name { font-family: var(--font-display); font-weight: var(--weight-heavy); font-size: 19px; letter-spacing: -.01em; }
.win-close { margin-left: auto; width: 18px; height: 18px; fill: none; stroke: var(--text-faint); stroke-width: 1.8; stroke-linecap: round; }
.win-body { display: grid; grid-template-columns: 168px minmax(0,1fr) 232px; }
.win-col { min-width: 0; padding: 26px 22px 28px; }
.win-col + .win-col { border-left: 1px solid var(--border); }
.win-col-title { font-size: 14px; font-weight: var(--weight-bold); margin-bottom: 14px; line-height: 1.4; }
.prof-tile { width: 52px; height: 52px; margin-bottom: 18px; }
.prof-name dt { font-size: 12px; color: var(--text-muted); font-weight: var(--weight-medium); line-height: 1.5; }
.prof-name dd { font-family: var(--font-display); font-size: 18px; font-weight: var(--weight-heavy); line-height: 1.4; margin-bottom: 14px; }
.prof-meta { display: grid; gap: 8px; margin-bottom: 20px; }
.prof-meta li { display: flex; align-items: center; gap: 7px; font-size: 12.5px; color: var(--text-muted); line-height: 1.4; }
.prof-meta svg { width: 15px; height: 15px; fill: none; stroke: var(--accent); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.prof-meta b { font-family: var(--font-mono); font-weight: var(--weight-semibold); color: var(--text); font-size: 12px; }
.bone { display: grid; gap: 10px; }
.bone span { display: block; height: 8px; border-radius: var(--r-pill); background: var(--bg-panel-2); color: var(--text); }
.bone span:nth-child(2) { width: 80%; }
.bone span:nth-child(3) { width: 58%; }
.mode-switch { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 4px; padding: 4px; border-radius: var(--r-md); background: var(--bg-panel); color: var(--text-muted); }
.mode-switch span { min-height: 34px; border-radius: var(--r-sm); display: grid; place-items: center; font-size: 13px; font-weight: var(--weight-semibold); }
.mode-switch .is-on { background: var(--accent); color: var(--on-accent); box-shadow: var(--shadow-chip); }
.yaml-snip { margin-top: 16px; padding: 11px 14px; border-radius: var(--r-sm); background: var(--bg-panel); color: var(--text); font-family: var(--font-mono); font-size: 12.5px; line-height: 1.8; }
.yaml-snip span { display: block; }
.yaml-snip .yaml-key { display: inline; color: var(--accent-dark); }
.url-field { margin-top: 16px; }
.url-field-label { display: block; font-size: 12px; font-weight: var(--weight-semibold); color: var(--text-muted); margin-bottom: 6px; line-height: 1.4; }
.url-field-box { display: flex; align-items: flex-start; gap: 7px; min-height: 40px; padding: 10px; border: 1px solid var(--border); border-radius: var(--r-sm); background: var(--bg); color: var(--text-muted); }
.url-field-box svg { margin-top: 2px; width: 14px; height: 14px; fill: none; stroke: var(--text-faint); stroke-width: 1.8; }
.url-field-box span { min-width: 0; font-family: var(--font-mono); font-size: 11px; overflow-wrap: anywhere; }
.interval-list { display: grid; gap: 9px; }
.interval-pill { min-height: 36px; border-radius: var(--r-pill); border: 1.5px solid var(--accent); display: grid; place-items: center; font-size: 13px; font-weight: var(--weight-bold); color: var(--accent); }
.interval-pick { position: relative; display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 8px; }
.interval-pick .interval-pill { background: var(--text-muted); border-color: var(--text-muted); color: var(--on-accent); }
.confirm-key { min-height: 36px; padding: 6px 14px; border-radius: var(--r-pill); background: var(--accent); color: var(--on-accent); display: grid; place-items: center; font-size: 13px; font-weight: var(--weight-bold); white-space: nowrap; box-shadow: var(--shadow-chip); animation: key-press .38s ease-in-out 1.9s 1; }
.pointer { position: absolute; right: 12px; bottom: -16px; z-index: 3; width: 26px; height: 26px; animation: pointer-in .7s var(--ease-rise) 1.15s both; }
.pointer svg { width: 26px; height: 26px; transform-origin: 15% 10%; animation: pointer-tap .38s ease-in-out 1.9s 1; }
.pointer-body { fill: var(--text); stroke: var(--bg); stroke-width: 1.5; stroke-linejoin: round; }
.qs-zone { padding-top: 22px; padding-bottom: 120px; background: var(--bg); color: var(--text); }
.qs-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.qs-tag { display: inline-block; padding: 5px 14px; border-radius: var(--r-pill); background: var(--bg-panel); color: var(--accent); font-size: 13px; font-weight: var(--weight-bold); letter-spacing: .04em; margin-bottom: 18px; }
.qs-title { margin-bottom: 14px; }
.qs-sub { color: var(--text-muted); font-size: 16px; line-height: 1.85; }
.qs-cards { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 24px; }
.qs-card { min-width: 0; background: var(--bg-panel); color: var(--text); border-radius: var(--r-lg); padding: 30px 28px; }
.qs-card h3 { font-size: 18px; font-weight: var(--weight-heavy); margin-bottom: 10px; line-height: 1.4; }
.qs-card p { color: var(--text-muted); font-size: 15px; line-height: 1.85; }
.qs-card code { font-size: 13px; color: var(--accent-dark); }
.qs-more { display: flex; justify-content: center; margin-top: 40px; }
.qs-more a { color: var(--accent); font-weight: var(--weight-bold); font-size: 15px; border-bottom: 1.5px solid var(--accent-ring); padding-bottom: 2px; }

.decorated, .feature-board { position: relative; overflow-x: clip; }
@keyframes geo-drift { from { transform: translate3d(0,0,0) rotate(0deg); } to { transform: translate3d(-18px,14px,0) rotate(-2.5deg); } }
@keyframes rise-in { from { opacity: 0; transform: translateY(28px); } to { opacity: 1; transform: none; } }
@keyframes pointer-in { from { opacity: 0; transform: translate(46px,40px); } to { opacity: 1; transform: none; } }
@keyframes pointer-tap { 0%,100% { transform: scale(1); } 50% { transform: scale(.82); } }
@keyframes key-press { 0%,100% { transform: scale(1); } 50% { transform: scale(.93); } }
@keyframes dot-breathe { 0% { opacity: .55; transform: scale(1); } 100% { opacity: 0; transform: scale(2.6); } }

@media (max-width: 1080px) {
  .topbar-row { gap: 20px; }
  .desktop-nav { display: none; }
  .menu-toggle { display: inline-flex; }
  .header-tools { margin-left: auto; }
  .static-mobile { display: block; }
  .static-mobile > summary { display: flex; list-style: none; }
  .static-mobile > summary::-webkit-details-marker { display: none; }
}
@media (min-width: 1081px) {
  .mobile-drawer, .nav-veil { display: none !important; }
}
@media (max-width: 1080px) {
  .frame { max-width: calc(var(--wide-width) + 48px); padding-inline: var(--gutter); }
  .hero-grid { grid-template-columns: minmax(0,1fr); gap: 64px; }
  .import-stage { max-width: 700px; width: 100%; margin-inline: auto; }
  .qs-cards { grid-template-columns: minmax(0,1fr); }
  .footer-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 768px) {
  h1, .hero-title { font-size: clamp(24px,4.2vw,30px); }
  .section { padding-top: 64px; padding-bottom: 64px; }
  .grid-three { grid-template-columns: minmax(0,1fr); }
  .section-head { margin-bottom: 36px; }
}
@media (max-width: 720px) {
  .win-body { grid-template-columns: minmax(0,1fr); }
  .win-col + .win-col { border-left: 0; border-top: 1px solid var(--border); }
  .geo-diamond { width: 460px; height: 460px; top: -260px; right: -180px; border-radius: var(--r-geo-small); }
  .geo-capsule { width: 380px; height: 110px; left: auto; right: -160px; top: auto; bottom: -40px; }
}
@media (max-width: 640px) {
  :root { --gutter: 16px; }
  .frame { padding-inline: var(--gutter); }
  .grid-two, .footer-grid { grid-template-columns: minmax(0,1fr); }
  .topbar-row { gap: 8px; }
  .brandmark { gap: 7px; }
  .brandmark-name { font-size: 16px; }
  .brandmark img { width: 32px; height: 32px; }
  .lang-full { display: none; }
  .lang-short { display: inline; }
  .header-tools { margin-left: auto; gap: 6px; }
  .lang-pick { min-height: 44px; padding-inline: 10px; }
  .lang-pick svg { display: none; }
  .hero-sheet { padding-top: 34px; }
  .hero-grid { gap: 48px; }
  .hero-title { margin-bottom: 24px; }
  .hero-title-line { white-space: nowrap; }
  .status-pill { font-size: 12px; margin-bottom: 20px; gap: 8px; }
  .press { padding-inline: 20px; font-size: 15px; }
  .lede { font-size: 15px; }
  .os-row { gap: 10px; }
  .os-list { gap: 7px; }
  .os-chip { font-size: 12px; padding-inline: 10px; }
  .tilt, .decorative-tilt { transform: none !important; }
  .footer-bottom { margin-top: 36px; }
  .card, .panel, .qs-card { padding: 24px 20px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html.reveal-ready .reveal:not(.shown) { opacity: 1; transform: none; }
}
@media print {
  .header-tools, .mobile-drawer, .nav-veil, .dl-fab { display: none !important; }
  html.reveal-ready .reveal:not(.shown) { opacity: 1; transform: none; }
}