@font-face { font-family: "Geist"; src: url("vendor/Geist-Variable.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Geist Mono"; src: url("vendor/GeistMono-Variable.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
:root {
  --bg: #07080d; --bg-2: #0b0d14;
  --surface: #11141c; --surface-solid: #11141c; --surface-2: #1a1e28;
  --line: rgba(238, 240, 245, 0.08); --line-2: rgba(238, 240, 245, 0.14);
  --ink: #eef0f5; --ink-2: #a3a9b8; --ink-3: #7a8296;
  --accent: #3d8bff; --accent-2: #1f63e6; --fold: #46e1ff;
  --accent-soft: rgba(61, 139, 255, 0.12);
  --good: #4cc38a; --warn: #eaa843; --bad: #e5484d;
  --glow: rgba(38, 118, 255, 0.32);
  --font-sans: "Geist", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  --font-mono: "Geist Mono", "Cascadia Mono", Consolas, "Microsoft YaHei UI", monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f5f7fa; --bg-2: #eceff4; --surface: #ffffff; --surface-solid: #ffffff; --surface-2: #eceff4;
    --line: rgba(17, 24, 39, 0.08); --line-2: rgba(17, 24, 39, 0.14);
    --ink: #111827; --ink-2: #4b5565; --ink-3: #6b7487;
    --accent: #1f6fe8; --accent-2: #0b54d4; --fold: #0a9fd1; --accent-soft: rgba(31, 111, 232, 0.08);
    --good: #16a34a; --warn: #b26a00; --bad: #dc2626; --glow: rgba(31, 111, 232, 0.15);
    color-scheme: light;
  }
}
:root[data-theme="light"] {
  --bg: #f5f7fa; --bg-2: #eceff4; --surface: #ffffff; --surface-solid: #ffffff; --surface-2: #eceff4;
  --line: rgba(17, 24, 39, 0.08); --line-2: rgba(17, 24, 39, 0.14);
  --ink: #111827; --ink-2: #4b5565; --ink-3: #6b7487;
  --accent: #1f6fe8; --accent-2: #0b54d4; --fold: #0a9fd1; --accent-soft: rgba(31, 111, 232, 0.08);
  --good: #16a34a; --warn: #b26a00; --bad: #dc2626; --glow: rgba(31, 111, 232, 0.15);
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--ink); font: 400 16px/1.75 var(--font-sans); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; text-wrap: balance; font-weight: 500; }
p { margin: 0; }
button { font: inherit; color: inherit; }
.wrap { max-width: 1200px; margin-inline: auto; padding-inline: 28px; }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 8px; }

.field { position: fixed; inset: 0; z-index: -1; pointer-events: none; background: var(--bg); }

.nav { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: color-mix(in srgb, var(--bg) 94%, transparent); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 32px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 500; font-size: 17px; }
.brand svg { width: 26px; height: 26px; border-radius: 7px; }
.nav nav { display: flex; gap: 24px; font-size: 14px; color: var(--ink-2); }
.nav nav a { transition: color 0.15s var(--ease); }
.nav nav a:hover { color: var(--ink); }
.grow { flex: 1; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 44px; padding-inline: 20px; border-radius: 10px; font-weight: 500; font-size: 15px; border: 1px solid transparent; transition: background-color 0.15s var(--ease), border-color 0.15s var(--ease), color 0.15s var(--ease), transform 0.15s var(--ease); white-space: nowrap; cursor: pointer; }
.btn:active { transform: scale(0.98); }
.btn-primary { color: #fff; background: var(--accent-2); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12); }
.btn-primary:hover { background: color-mix(in srgb, var(--accent-2) 88%, white); }
.btn-ghost { border-color: var(--line-2); background: var(--surface-2); color: var(--ink); }
.btn-ghost:hover { border-color: color-mix(in srgb, var(--ink) 24%, transparent); }
.btn-sm { height: 36px; padding-inline: 16px; font-size: 14px; border-radius: 8px; }

.theme { display: inline-flex; padding: 3px; gap: 2px; border-radius: 10px; border: 1px solid var(--line-2); background: var(--surface-solid); }
.theme button { width: 30px; height: 30px; border: 0; border-radius: 7px; background: transparent; display: grid; place-items: center; cursor: pointer; color: var(--ink-3); transition: background 0.25s, color 0.25s; }
.theme button svg { width: 15px; height: 15px; stroke: currentColor; fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.theme button:hover { color: var(--ink); }
.theme button[aria-pressed="true"] { background: var(--surface-2); color: var(--ink); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.hero { position: relative; display: grid; grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr); align-items: center; gap: 8px; padding-block: 48px 24px; min-height: 680px; }
.eyebrow { display: inline-flex; align-items: center; gap: 12px; font-size: 14px; color: var(--ink-3); }
.eyebrow b { font-weight: 500; color: var(--ink); padding-right: 12px; border-right: 1px solid var(--line-2); }
.hero h1 { margin-top: 24px; font-size: clamp(48px, 6.4vw, 84px); line-height: 1.06; letter-spacing: -0.03em; font-weight: 500; }
.hero h1 .grad { color: var(--ink-2); }
.hero .lede { margin-top: 24px; font-size: 18px; line-height: 1.8; color: var(--ink-2); max-width: 24em; }
.hero .ctas { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px; }
.platforms { margin-top: 32px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; font-size: 14px; color: var(--ink-3); }
.platforms .live { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); }
.platforms .live i { width: 8px; height: 8px; border-radius: 50%; background: var(--good); }
.platforms .soon { display: inline-flex; gap: 12px; }
.enter > * { animation: enter 0.4s var(--ease) both; }
.enter > *:nth-child(2) { animation-delay: 0.05s; } .enter > *:nth-child(3) { animation-delay: 0.1s; } .enter > *:nth-child(4) { animation-delay: 0.15s; } .enter > *:nth-child(5) { animation-delay: 0.2s; }
@keyframes enter { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.planet { position: relative; aspect-ratio: 1; width: 112%; max-width: 760px; margin-right: -8%; justify-self: end; }
.planet canvas { position: absolute; inset: 0; width: 100% !important; height: 100% !important; cursor: grab; touch-action: pan-y; }
.planet.grabbing canvas { cursor: grabbing; }
.planet .fallback { position: absolute; inset: 14%; border-radius: 50%; background: radial-gradient(circle at 38% 32%, color-mix(in srgb, var(--fold) 25%, transparent), var(--glow) 45%, transparent 70%); }
.tag { pointer-events: none; position: absolute; display: flex; align-items: center; gap: 8px; padding: 10px 16px; border-radius: 12px; border: 1px solid var(--line-2); background: var(--surface); font-size: 13px; box-shadow: 0 16px 40px -24px rgba(0, 0, 0, 0.6); white-space: nowrap; }
.tag .ico { width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; background: var(--surface-2); }
.tag .ico svg { width: 16px; height: 16px; stroke: var(--ink-2); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.tag small { display: block; font-size: 12px; color: var(--ink-3); line-height: 1.3; }
.tag b { display: block; font-weight: 500; line-height: 1.4; }
.tag.t1 { left: 4%; top: 18%; } .tag.t2 { right: 6%; top: 52%; } .tag.t3 { left: 12%; bottom: 10%; }


.chapter { position: relative; padding-block: 104px; isolation: isolate; }
.chapter::before { content: ""; position: absolute; top: 0; bottom: 0; left: 50%; width: 100vw; transform: translateX(-50%); z-index: -1; pointer-events: none; }
.chapter.alt::before { background: var(--bg-2); border-block: 1px solid var(--line); }
.head { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); gap: 56px; align-items: end; margin-bottom: 48px; }
.mark { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--surface-2); border: 1px solid var(--line-2); margin-bottom: 24px; }
.mark svg { width: 20px; height: 20px; stroke: var(--ink-2); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.head h2 { font-size: clamp(36px, 4.4vw, 56px); line-height: 1.1; letter-spacing: -0.02em; }
.head .slogan { margin-top: 12px; font-size: clamp(20px, 2.2vw, 24px); font-weight: 400; color: var(--ink-3); }
.head .slogan em { font-style: normal; color: var(--ink); }
.head p.body { color: var(--ink-2); font-size: 17px; line-height: 1.9; max-width: 30em; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: 24px; align-items: stretch; }
.split.flip { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); }
.split.flip > :first-child { order: 2; }

.points { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; align-content: stretch; }
.points.one { grid-template-columns: minmax(0, 1fr); }
.pt { background: var(--surface-solid); padding: 24px; display: grid; gap: 8px; align-content: start; position: relative; }
.pt h3 { font-size: 17px; display: flex; align-items: center; gap: 8px; }
.pt h3 svg { width: 32px; height: 32px; padding: 7px; border-radius: 8px; background: var(--surface-2); border: 1px solid var(--line); stroke: var(--ink-2); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.pt p { font-size: 15px; color: var(--ink-2); line-height: 1.8; }
.points:not(.one) .pt p { min-height: 5.4em; }

.film { position: relative; margin: 0; border-radius: 16px; border: 1px solid var(--line); min-width: 0; }
.film-inner { position: relative; height: 100%; min-height: 400px; border-radius: 15px; overflow: hidden; background: var(--surface-solid); display: grid; }
.film-bar { position: absolute; left: 0; right: 0; bottom: 0; display: flex; align-items: center; gap: 12px; padding: 40px 20px 16px; background: linear-gradient(transparent, color-mix(in srgb, var(--surface-solid) 97%, transparent) 55%); z-index: 4; }
.film-bar .t { display: grid; gap: 1px; min-width: 0; }
.film-bar .t b { font-weight: 500; font-size: 15px; }
.film-bar .t span { font-size: 13px; color: var(--ink-3); }
.scene { position: relative; padding: 24px 24px 100px; display: grid; align-content: start; gap: 12px; }
.scene.center { align-content: center; justify-items: center; }
img.dk { display: none; }
:root[data-theme="dark"] img.lt { display: none; } :root[data-theme="dark"] img.dk { display: block; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) img.lt { display: none; } :root:not([data-theme="light"]) img.dk { display: block; } }
.shot { position: absolute; inset: 24px 0 0 24px; z-index: 1; display: flex; align-items: flex-start; justify-content: flex-start; padding: 0; border: 0; background: none; overflow: hidden; cursor: zoom-in; border-radius: 14px 0 0 0; -webkit-mask-image: linear-gradient(90deg, #000 72%, transparent); mask-image: linear-gradient(90deg, #000 72%, transparent); }
.shot img { flex: none; width: var(--w, 100%); max-width: none; height: auto; border-radius: 14px 0 0 0; box-shadow: 0 0 0 1px var(--line-2); }
.shot.fit { position: relative; inset: auto; width: min(100%, 520px); overflow: visible; border-radius: 14px; -webkit-mask-image: none; mask-image: none; }
.shot.fit img { width: 100%; border-radius: 14px; box-shadow: 0 0 0 1px var(--line-2), 0 24px 48px -32px rgba(0, 0, 0, 0.6); }
.desk { position: relative; height: 128px; border-radius: 14px; border: 1px solid var(--line); overflow: hidden; background: var(--bg-2); }
.desk::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 26px; background: color-mix(in srgb, var(--surface-solid) 82%, transparent); border-top: 1px solid var(--line); }
.pills span { position: absolute; right: 20px; top: 26px; opacity: 0; animation: pill 8s var(--ease) infinite; animation-delay: calc(var(--i) * 2s); }
.pills img { height: 42px; width: auto; }
@keyframes pill { 0% { opacity: 0; transform: translateY(8px); } 4%, 22% { opacity: 1; transform: none; } 26%, 100% { opacity: 0; transform: translateY(-4px); } }
.timeline .ev { animation: evlit 8s var(--ease) infinite; animation-delay: calc(var(--i) * 2s); }
@keyframes evlit { 0%, 24% { background: var(--accent-soft); box-shadow: inset 3px 0 0 var(--accent); } 26%, 100% { background: color-mix(in srgb, var(--bg) 35%, transparent); box-shadow: none; } }
.zoombox { padding: 0; border: 0; background: none; max-width: 96vw; max-height: 92vh; overflow: visible; cursor: zoom-out; }
.zoombox::backdrop { background: rgba(2, 4, 10, 0.78); backdrop-filter: blur(6px); }
.zoombox img { display: block; max-width: 96vw; max-height: 92vh; width: auto; height: auto; border-radius: 14px; box-shadow: 0 40px 120px -30px rgba(0, 0, 0, 0.8); }
.zoom-close { position: absolute; top: 10px; right: 10px; width: 36px; height: 36px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, 0.28); background: rgba(12, 16, 24, 0.82); color: #fff; font: 400 22px/1 var(--font-sans); cursor: pointer; }
.zoom-close:hover { background: rgba(12, 16, 24, 0.95); }
.skip { position: fixed; left: 16px; top: -60px; z-index: 1000; padding: 8px 16px; border-radius: 10px; border: 1px solid var(--accent); background: var(--surface-solid); color: var(--ink); text-decoration: none; }
.skip:focus { top: 12px; }

.timeline { display: grid; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.ev { display: grid; grid-template-columns: 5.6em 10px minmax(0, 1fr); gap: 12px; padding: 12px 16px; border-top: 1px solid var(--line); font-size: 14px; background: color-mix(in srgb, var(--bg) 35%, transparent); }
.ev:first-child { border-top: 0; }
.ev time { color: var(--ink-3); font: 400 12px/1.8 var(--font-mono); font-variant-numeric: tabular-nums; }
.ev i { width: 9px; height: 9px; border-radius: 50%; margin-top: 7px; background: var(--good); }
.ev.w i { background: var(--warn); } .ev.b i { background: var(--bad); }
.ev p { color: var(--ink-2); } .ev p b { color: var(--ink); font-weight: 500; }

.routes { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.route { position: relative; padding: 24px 20px; border-radius: 16px; border: 1px solid var(--line); background: var(--surface); display: flex; flex-direction: column; align-items: flex-start; gap: 8px; overflow: hidden; min-width: 0; }
.route .glyph { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: var(--surface-2); border: 1px solid var(--line); }
.route .glyph svg { width: 20px; height: 20px; stroke: var(--ink-2); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.route b { font-size: 18px; font-weight: 500; margin-top: 8px; }
.route p { font-size: 14px; color: var(--ink-2); line-height: 1.75; }
.route .who { font: 400 12px var(--font-mono); color: var(--ink-3); margin-top: auto; }
.route .flow { display: none; }
.route.tun { background: var(--surface-2); border-color: var(--line-2); }
.aside { margin-top: 16px; display: flex; align-items: center; gap: 12px; padding: 16px 20px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); font-size: 15px; color: var(--ink-2); }
.aside svg { width: 18px; height: 18px; stroke: var(--ink-3); fill: none; stroke-width: 1.5; flex: none; }

.lab { position: relative; border-radius: 20px; overflow: hidden; color-scheme: dark;
  --surface-solid: #0a0f1c; --surface: rgba(13, 18, 30, 0.72); --line: rgba(150, 175, 220, 0.12); --line-2: rgba(150, 175, 220, 0.26);
  --ink: #f3f6fb; --ink-2: #a7b2c3; --ink-3: #7a879e; --accent: #3d8bff; --accent-2: #155dfc; --fold: #46e1ff; --accent-soft: rgba(61, 139, 255, 0.16);
  --good: #33c58f; --bad: #f26464; --bg: #03050a;
  color: var(--ink); border: 1px solid var(--line-2);
  background: radial-gradient(70% 55% at 50% 40%, rgba(40, 110, 255, 0.2), transparent 70%), #05070d; }
.lab-top { position: relative; z-index: 2; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding: 20px 24px 0; }
.seg { display: inline-flex; padding: 4px; gap: 4px; border-radius: 10px; border: 1px solid var(--line-2); background: color-mix(in srgb, var(--bg) 50%, transparent); }
.seg button { border: 0; background: transparent; padding: 8px 16px; border-radius: 6px; font-size: 14px; color: var(--ink-2); cursor: pointer; position: relative; overflow: hidden; transition: color 0.3s, background 0.3s; }
.seg button[aria-selected="true"] { color: #fff; background: var(--accent-2); }
.seg button[aria-selected="true"]::after { content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 100%; background: rgba(255,255,255,0.7); transform-origin: left; transform: scaleX(0); animation: progress 7s linear forwards; }
.lab.manual .seg button::after { display: none; }
@keyframes progress { to { transform: scaleX(1); } }
.lab-caption { font-size: 15px; color: var(--ink-2); max-width: 34em; }
.lab-canvas { position: relative; height: 520px; }
.lab-canvas canvas { position: absolute; inset: 0; width: 100% !important; height: 100% !important; }
.labels { position: absolute; inset: 0; pointer-events: none; }
.lbl { position: absolute; transform: translate(-50%, -100%); display: flex; align-items: center; gap: 8px; padding: 6px 10px 6px 8px; border-radius: 10px; background: color-mix(in srgb, var(--surface-solid) 86%, transparent); border: 1px solid var(--line-2); font-size: 13px; white-space: nowrap; box-shadow: 0 14px 30px -18px rgba(0,0,0,0.7); transition: border-color 0.4s, color 0.4s; }
.lbl .flag { width: 18px; height: 12px; border-radius: 2px; overflow: hidden; flex: none; box-shadow: 0 0 0 1px rgba(0,0,0,0.15); }
.lbl .ic { width: 20px; height: 20px; border-radius: 6px; display: grid; place-items: center; background: var(--accent-soft); flex: none; }
.lbl .ic svg { width: 13px; height: 13px; stroke: var(--accent); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.lbl b { font-weight: 500; }
.lbl small { color: var(--ink-3); font: 400 11px var(--font-mono); }
.lbl .st { font: 500 11px/1 var(--font-sans); padding: 4px 6px; border-radius: 6px; color: var(--good); background: color-mix(in srgb, var(--good) 14%, transparent); }
.lbl.down { border-color: color-mix(in srgb, var(--bad) 50%, transparent); }
.lbl.down .st { color: var(--bad); background: color-mix(in srgb, var(--bad) 14%, transparent); }
.lbl.seen { border-color: color-mix(in srgb, var(--fold) 55%, transparent); }
.kit { margin-top: 20px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.kit article { position: relative; padding: 24px; border-radius: 16px; border: 1px solid var(--line); background: var(--surface); display: grid; gap: 8px; align-content: start; min-width: 0; overflow: hidden; }
.kit h3 { font-size: 17px; }
.kit p { font-size: 14px; color: var(--ink-2); line-height: 1.8; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.chips span { font: 400 12px/1 var(--font-mono); padding: 6px 8px; border-radius: 6px; border: 1px solid var(--line-2); color: var(--ink-2); }


.devices { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 12px; }
.device { position: relative; padding: 24px 20px; border-radius: 16px; border: 1px solid var(--line); background: var(--surface); display: grid; gap: 12px; justify-items: start; min-width: 0; overflow: hidden; }
.device svg { width: 28px; height: 28px; stroke: var(--ink-2); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.device b { font-size: 17px; font-weight: 500; }
.device span { font-size: 12px; color: var(--ink-3); padding: 4px 8px; border-radius: 6px; border: 1px solid var(--line-2); }
a.device { transition: border-color 0.15s var(--ease); }
a.device:hover { border-color: var(--line-2); }
.device.on { border-color: var(--line-2); background: var(--surface-2); }
.device.on svg { stroke: var(--ink); }
.device.on span { color: var(--good); border-color: color-mix(in srgb, var(--good) 45%, transparent); }


.cta { position: relative; margin-top: 8px; padding: 72px 56px; border-radius: 20px; border: 1px solid var(--line); overflow: hidden; text-align: center; background: var(--surface-solid); }
.cta h2 { font-size: clamp(40px, 5vw, 64px); letter-spacing: -0.03em; line-height: 1.08; }
.cta .slogan { margin-top: 16px; font-size: clamp(18px, 2vw, 20px); color: var(--ink-2); }
.cta .row { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.cta .row .btn { min-width: 168px; }
.cta .meta { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: center; font-size: 13px; color: var(--ink-3); }

footer { margin-top: 96px; border-top: 1px solid var(--line); padding-block: 40px 48px; color: var(--ink-3); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 28px; align-items: center; }
footer a:hover { color: var(--ink); }


@media (max-width: 1040px) {
  .hero { grid-template-columns: minmax(0, 1fr); min-height: 0; padding-block: 40px 8px; }
  .planet { justify-self: center; width: 100%; max-width: 560px; margin-right: 0; }
  .head, .split, .split.flip { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .split.flip > :first-child { order: 0; }
  .routes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .route.tun { grid-column: 1 / -1; }
  .kit { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .devices { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .nav nav { display: none; }
  .chapter { padding-block: 80px; }
  .cta { padding: 48px 24px; }
}
@media (max-width: 640px) {
  .wrap { padding-inline: 16px; }
  .points, .routes, .kit { grid-template-columns: minmax(0, 1fr); }
  .devices { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lab-canvas { height: 380px; }
  .nav .wrap { gap: 12px; }
  .lab-top { padding: 16px 16px 0; }
  .seg { width: 100%; }
  .seg button { flex: 1; padding: 8px 6px; font-size: 14px; white-space: nowrap; }
  .lbl { font-size: 12px; gap: 6px; padding: 5px 8px 5px 6px; }
  .lbl small { display: none; }
  .route { display: grid; grid-template-columns: 42px minmax(0, 1fr); column-gap: 16px; row-gap: 6px; align-items: start; padding: 20px 16px; }
  .route .glyph { grid-row: 1 / span 4; }
  .route > :not(.glyph) { grid-column: 2; }
  .route b { margin-top: 0; }
  .route .who { margin-top: 2px; }
  .pt { padding: 20px 16px 24px; }
  .points:not(.one) .pt p { min-height: 0; }
  .tag { font-size: 12px; padding: 8px 12px; } .tag .ico { display: none; }
  .shot { inset: 16px 0 0 16px; }
  .film-inner { min-height: 340px; }
  .desk { height: 108px; }
  .pills img { height: 30px; }
  .pills span { right: 14px; top: 22px; }
  .ev { grid-template-columns: 4.8em 10px minmax(0, 1fr); gap: 8px; font-size: 13px; }
  .scene { padding: 16px 16px 96px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .pills span:first-child { opacity: 1; }
}

.nav nav a[aria-current="page"] { color: var(--ink); }
.menu { display: none; position: relative; }
.menu summary { list-style: none; width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--line-2); display: grid; place-items: center; cursor: pointer; color: var(--ink-2); }
.menu summary::-webkit-details-marker { display: none; }
.menu summary svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; }
.menu nav { position: absolute; right: 0; top: 44px; min-width: 180px; display: grid; gap: 2px; padding: 8px; border-radius: 14px; border: 1px solid var(--line-2); background: var(--surface-solid); box-shadow: 0 16px 40px -24px rgba(0, 0, 0, 0.5); }
.menu nav a { padding: 8px 12px; border-radius: 6px; font-size: 15px; color: var(--ink-2); }
.menu nav a[aria-current="page"], .menu nav a:hover { color: var(--ink); background: var(--surface-2); }

.head.center { grid-template-columns: minmax(0, 1fr); justify-items: center; text-align: center; gap: 16px; }
.head.center .mark { margin-inline: auto; }
.head.center p.body { margin-inline: auto; }

.facts { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 8px 24px; font-size: 15px; color: var(--ink-2); }
.facts span { display: inline-flex; align-items: center; gap: 8px; }
.facts svg { width: 16px; height: 16px; stroke: var(--ink-3); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }

.badge-ico { width: 48px; height: 48px; border-radius: 12px; flex: none; display: grid; place-items: center; background: var(--surface-2); border: 1px solid var(--line-2); }
.badge-ico svg { width: 22px; height: 22px; stroke: var(--ink-2); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.badge-ico.sm { width: 40px; height: 40px; border-radius: 10px; }
.badge-ico.sm svg { width: 20px; height: 20px; }

.suite { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.suite-card { position: relative; display: flex; flex-direction: column; gap: 24px; padding: 32px; border-radius: 16px; border: 1px solid var(--line); background: var(--surface); overflow: hidden; min-width: 0; }
.suite-card .top { display: flex; align-items: center; gap: 16px; }
.suite-card h3 { font-size: 24px; }
.suite-card .one { margin-top: 2px; font-size: 16px; color: var(--ink-2); }
.ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.ticks li { display: grid; grid-template-columns: 16px minmax(0, 1fr); gap: 8px; font-size: 15px; line-height: 1.75; color: var(--ink-2); }
.ticks li::before { content: ""; width: 6px; height: 6px; margin-top: 0.75em; border-radius: 50%; background: var(--ink-3); }
.suite-card .shot.fit { width: 100%; }
.suite-card .shot.fit img { border-radius: 12px; }
.suite-card .more { margin-top: auto; }
.more { align-self: flex-start; display: inline-flex; align-items: center; gap: 6px; font-weight: 500; color: var(--accent); transition: color 0.15s var(--ease); }
.more:hover { color: var(--ink); }
.suite-link { margin-top: 32px; display: flex; align-items: center; justify-content: center; gap: 16px; font-size: 15px; color: var(--ink-2); text-align: center; }
.suite-link::before, .suite-link::after { content: ""; flex: 1; max-width: 160px; height: 1px; background: var(--line-2); }

.scenes-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.scene-card { position: relative; display: grid; align-content: start; gap: 12px; padding: 28px; border-radius: 16px; border: 1px solid var(--line); background: var(--surface); overflow: hidden; min-width: 0; }
.scene-card h3 { font-size: 20px; }
.scene-card p { font-size: 15px; line-height: 1.85; color: var(--ink-2); }

.promise { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.promise div { display: grid; align-content: start; gap: 8px; padding: 28px 24px; background: var(--surface-solid); min-width: 0; }
.promise svg { width: 24px; height: 24px; stroke: var(--ink-2); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.promise b { font-size: 17px; font-weight: 500; margin-top: 8px; }
.promise span { font-size: 14px; line-height: 1.75; color: var(--ink-2); }

.btn[aria-disabled="true"] { opacity: 0.5; pointer-events: none; }
.cta .note { margin-top: 16px; font-size: 14px; color: var(--ink-3); }
.cta .note a, .more-link { color: var(--accent); }

.votes { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 320px)); justify-content: center; gap: 16px; }
.vote { position: relative; display: grid; justify-items: start; gap: 12px; padding: 28px; border-radius: 16px; border: 1px solid var(--line); background: var(--surface); overflow: hidden; min-width: 0; }
.vote b { font-size: 20px; font-weight: 500; }
.vote span { font-size: 14px; color: var(--ink-2); }
.vote .btn { margin-top: 8px; }

footer nav { display: flex; flex-wrap: wrap; gap: 8px 24px; }

@media (max-width: 1040px) {
  .menu { display: block; }
  .suite { grid-template-columns: minmax(0, 1fr); }
  .scenes-grid { grid-template-columns: minmax(0, 1fr); }
  .promise { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .nav .btn-sm { display: none; }
  .suite-card { padding: 24px 16px; }
  .votes { grid-template-columns: minmax(0, 1fr); }
  .promise div { padding: 24px 16px; }
}

.page-hero { position: relative; padding-block: 72px 32px; display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 48px; align-items: center; }
.page-hero h1 { margin-top: 24px; font-size: clamp(40px, 5.2vw, 68px); line-height: 1.08; letter-spacing: -0.03em; }
.page-hero h1 .grad { color: var(--ink-2); }
.page-hero .slogan { margin-top: 12px; font-size: clamp(20px, 2.4vw, 26px); color: var(--ink-3); }
.page-hero .slogan em { font-style: normal; color: var(--ink); }
.page-hero .lede { margin-top: 16px; font-size: 17px; line-height: 1.85; color: var(--ink-2); max-width: 30em; }
.page-hero .ctas { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px; }
.page-hero .shot.fit { width: 100%; }
.page-hero .shot.fit img { border-radius: 14px; }

.toc { position: sticky; top: 64px; z-index: 15; margin-top: 24px; border-block: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 96%, transparent); }
.toc .wrap { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; padding-block: 8px; }
.toc .wrap::-webkit-scrollbar { display: none; }
.toc a { flex: none; padding: 8px 12px; border-radius: 8px; font-size: 14px; color: var(--ink-2); white-space: nowrap; transition: color 0.15s var(--ease), background-color 0.15s var(--ease); }
.toc a:hover { color: var(--ink); }
.toc a[aria-current="true"] { color: var(--ink); background: var(--surface-2); }
.chapter[id], section[id] { scroll-margin-top: 128px; }

.tag-win { display: inline-block; margin-left: 8px; padding: 2px 6px; border-radius: 4px; font: 400 12px/1.5 var(--font-mono); color: var(--ink-3); border: 1px solid var(--line-2); vertical-align: 2px; }
.pt ul { margin: 0; padding-left: 1.1em; display: grid; gap: 4px; font-size: 15px; line-height: 1.75; color: var(--ink-2); }
.pt ul li::marker { color: var(--ink-3); }
.points .pt:last-child:nth-child(odd) { grid-column: 1 / -1; }
.points.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.points.three .pt:last-child:nth-child(odd) { grid-column: auto; }
.points.three .pt { align-content: start; }
.points.three .pt p { min-height: 0; }
.film.wide .film-inner { min-height: 0; }
.film.wide .scene { padding: 32px 32px 0; }
.film.wide .shot.fit { width: min(100%, 980px); }
.film.wide .shot.fit.narrow { width: min(100%, 620px); }
.film.wide .film-bar { position: static; justify-content: center; text-align: center; background: none; padding: 16px 20px 24px; }
.more-grid b { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.more-grid b .tag-win, .route b .tag-win { margin-left: 0; }
.stack { display: grid; gap: 24px; }

.more-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.more-grid div { position: relative; display: grid; align-content: start; gap: 8px; padding: 20px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); min-width: 0; }
.more-grid b { font-size: 16px; font-weight: 500; }
.more-grid span { font-size: 14px; line-height: 1.75; color: var(--ink-2); }

@media (max-width: 1040px) {
  .page-hero { grid-template-columns: minmax(0, 1fr); padding-block: 48px 16px; gap: 32px; }
  .points.three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .more-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .toc { top: 64px; }
}
@media (max-width: 640px) {
  .points.three { grid-template-columns: minmax(0, 1fr); }
  .film.wide .scene { padding: 16px 16px 0; }
  .more-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .more-grid div { padding: 16px 16px; }
}

.duo { position: relative; height: 470px; }
.duo .shot { position: absolute; inset: auto; -webkit-mask-image: none; mask-image: none; border-radius: 16px; overflow: hidden; }
.duo .back { left: 0; bottom: 0; width: 82%; }
.duo .back img { width: 100%; border-radius: 16px; }
.duo .front { right: 0; top: 0; width: 34%; height: 430px; box-shadow: 0 24px 48px -24px rgba(0, 0, 0, 0.5); }
.duo .front img { width: 100%; border-radius: 16px; }
.shot.tall { inset: 24px 24px 0 24px; justify-content: center; -webkit-mask-image: linear-gradient(180deg, #000 78%, transparent); mask-image: linear-gradient(180deg, #000 78%, transparent); }
.shot.tall img { width: min(100%, 340px); border-radius: 14px 14px 0 0; }

.diagram { display: grid; place-items: center; padding: 28px 24px 96px; }
.diagram svg { width: 100%; max-width: 520px; height: auto; overflow: visible; }
.diagram .box { fill: var(--surface-2); stroke: var(--line-2); stroke-width: 1; }
.diagram .bridge { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 1; }
.diagram .wire { fill: none; stroke: var(--accent); stroke-width: 1.5; stroke-dasharray: 5 6; }
.diagram .wire.back { stroke: var(--ink-3); }
.diagram text { font-family: var(--font-sans); fill: var(--ink); }
.diagram .small { fill: var(--ink-3); font-size: 12px; }
.diagram .title { font-size: 15px; font-weight: 500; }

.bound { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.bound > div { padding: 32px; border-radius: 16px; border: 1px solid var(--line); background: var(--surface); display: grid; align-content: start; gap: 16px; min-width: 0; }
.bound h3 { font-size: 19px; display: flex; align-items: center; gap: 8px; }
.bound h3 svg { width: 20px; height: 20px; fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.bound .can h3 svg { stroke: var(--good); }
.bound .cannot h3 svg { stroke: var(--ink-3); }
.bound ul { margin: 0; padding-left: 1.1em; display: grid; gap: 8px; font-size: 15px; line-height: 1.8; color: var(--ink-2); }
.bound ul b { color: var(--ink); font-weight: 500; }

.install { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 32px; align-items: center; padding: 32px; border-radius: 16px; border: 1px solid var(--line); background: var(--surface-solid); }
.install ul { margin: 0; padding-left: 1.1em; display: grid; gap: 8px; font-size: 15px; line-height: 1.8; color: var(--ink-2); }

@media (max-width: 1040px) {
  .duo { height: 420px; max-width: 640px; }
  .bound { grid-template-columns: minmax(0, 1fr); }
  .install { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .duo { height: 330px; }
  .duo .front { width: 40%; height: 300px; }
  .bound > div, .install { padding: 24px 16px; }
}

.page-hero.solo { grid-template-columns: minmax(0, 1fr); justify-items: center; text-align: center; padding-block: 72px 8px; }
.page-hero.solo .lede { margin-inline: auto; }

.plat-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.platform { position: relative; display: grid; align-content: start; gap: 16px; padding: 28px; border-radius: 16px; border: 1px solid var(--line); background: var(--surface); min-width: 0; }
.platform.is-yours { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); }
html[lang="en"] .platform.is-yours::before { content: "Your system"; }
.platform.is-yours::before { content: "你的系统"; position: absolute; top: 24px; right: 24px; padding: 4px 8px; border-radius: 6px; font-size: 12px; color: var(--accent); background: var(--accent-soft); }
.platform .os { display: flex; align-items: center; gap: 16px; }
.platform h3 { font-size: 24px; }
.platform .state { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-2); }
.platform .state::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--good); }
.platform .state.soon::before { background: var(--ink-3); }
.platform .state.soon { color: var(--ink-3); }
.platform dl { margin: 0; display: grid; gap: 8px; font-size: 14px; }
.platform dl div { display: grid; grid-template-columns: 5.5em minmax(0, 1fr); gap: 8px; }
html[lang="en"] .platform dl div { grid-template-columns: 7em minmax(0, 1fr); }
.platform dt { color: var(--ink-3); }
.platform dd { margin: 0; color: var(--ink-2); }
.platform .btn { margin-top: 8px; justify-self: start; }
.platform .btns { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.platform .btns .btn { margin-top: 0; }

.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; counter-reset: step; }
.step { position: relative; display: grid; align-content: start; gap: 16px; padding: 24px; border-radius: 16px; border: 1px solid var(--line); background: var(--surface); min-width: 0; }
.step h3 { font-size: 18px; display: flex; align-items: center; gap: 8px; }
.step h3::before { counter-increment: step; content: counter(step); width: 28px; height: 28px; flex: none; border-radius: 50%; display: grid; place-items: center; font: 500 13px var(--font-mono); color: var(--ink); background: var(--surface-2); border: 1px solid var(--line-2); }
.step p { font-size: 15px; line-height: 1.8; color: var(--ink-2); }
.step-art { border-radius: 10px; border: 1px solid var(--line-2); background: var(--bg-2); overflow: hidden; font-size: 13px; }
.step-art .bar { display: flex; align-items: center; gap: 6px; padding: 9px 10px; border-bottom: 1px solid var(--line); }
.step-art .bar i { width: 9px; height: 9px; border-radius: 50%; background: var(--line-2); }
.step-art .url { flex: 1; margin-left: 4px; padding: 5px 10px; border-radius: 8px; border: 1px solid var(--accent); background: var(--surface); font-family: var(--font-mono); font-size: 13px; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.step-art .body { padding: 16px; display: grid; gap: 8px; }
.step-art .line { height: 8px; border-radius: 4px; background: var(--line); }
.step-art .line.short { width: 60%; }
.step-art .row { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 10px 12px; border-radius: 10px; background: var(--surface); border: 1px solid var(--line); color: var(--ink); }
.step-art .switch { width: 34px; height: 20px; border-radius: 999px; background: var(--accent); position: relative; flex: none; }
.step-art .switch::after { content: ""; position: absolute; right: 3px; top: 3px; width: 14px; height: 14px; border-radius: 50%; background: #fff; }
.step-art .fake-btn { justify-self: start; padding: 7px 12px; border-radius: 8px; border: 1px solid var(--accent); color: var(--accent); background: var(--accent-soft); }
.path { display: grid; gap: 8px; }
.path span { font-size: 13px; color: var(--ink-3); }
.path div { display: flex; align-items: center; gap: 8px; min-width: 0; }
.path code { flex: 1; min-width: 0; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--line-2); background: var(--surface-solid); font: 13px/1.5 var(--font-mono); color: var(--ink); overflow-wrap: anywhere; }
.path button { flex: none; height: 32px; padding-inline: 12px; border-radius: 8px; border: 1px solid var(--line-2); background: var(--surface); cursor: pointer; font-size: 13px; }
.keys { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: 13px; color: var(--ink-2); }
kbd { display: inline-block; padding: 2px 8px; border-radius: 6px; border: 1px solid var(--line-2); border-bottom-width: 2px; background: var(--surface-solid); font: 400 12px var(--font-mono); color: var(--ink); }
.after { margin-top: 16px; font-size: 15px; color: var(--ink-2); text-align: center; }

.firstrun { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.firstrun > div { display: grid; align-content: start; gap: 12px; padding: 28px; border-radius: 16px; border: 1px solid var(--line); background: var(--surface); min-width: 0; }
.firstrun h3 { font-size: 19px; }
.firstrun p { font-size: 15px; line-height: 1.85; color: var(--ink-2); }

.faq { display: grid; gap: 8px; max-width: 860px; margin-inline: auto; }
.faq details { border-radius: 12px; border: 1px solid var(--line); background: var(--surface); }
.faq summary { list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 24px; cursor: pointer; font-size: 16px; font-weight: 500; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; flex: none; font-size: 20px; color: var(--ink-3); transition: transform 0.18s var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 24px 20px; font-size: 15px; line-height: 1.85; color: var(--ink-2); }

@media (max-width: 1040px) {
  .plat-grid, .steps { grid-template-columns: minmax(0, 1fr); max-width: 560px; margin-inline: auto; }
  .firstrun { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .platform, .step, .firstrun > div { padding: 24px 16px; }
  .faq summary { padding: 16px 16px; }
  .faq details p { padding: 0 16px 16px; }
}

[hidden] { display: none !important; }

.notice { border-bottom: 1px solid var(--line); background: var(--surface-solid); }
.notice .wrap { display: flex; align-items: center; gap: 12px; padding-block: 11px; }
.notice-text { flex: 1; min-width: 0; display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 12px; font-size: 14px; line-height: 1.7; color: var(--ink-2); }
.notice-text b { color: var(--ink); font-weight: 500; }
.notice-text p { margin: 0; overflow-wrap: anywhere; }
.notice-close { flex: none; width: 32px; height: 32px; border: 0; border-radius: 8px; display: grid; place-items: center; background: transparent; color: var(--ink-3); cursor: pointer; }
.notice-close:hover { color: var(--ink); background: var(--surface-2); }
.notice-close svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }

.platform dl div[hidden] { display: none; }

.log-tabs { display: flex; justify-content: center; gap: 8px; margin-bottom: 24px; }
.log-tabs button { padding: 8px 16px; border-radius: 8px; border: 1px solid var(--line-2); background: transparent; color: var(--ink-2); font: 500 14px var(--font-sans); cursor: pointer; }
.log-tabs button[aria-selected="true"] { color: var(--ink); border-color: var(--line-2); background: var(--surface-2); }
.log { display: grid; gap: 12px; max-width: 860px; margin-inline: auto; }
.log-item { padding: 24px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); min-width: 0; }
.log-meta { display: flex; align-items: center; gap: 12px; font-size: 13px; }
.log-meta b { color: var(--ink); font-weight: 500; font-family: var(--font-mono); }
.log-meta time { color: var(--ink-3); }
.log-item h3 { margin-top: 8px; font-size: 18px; }
.log-item p { margin-top: 8px; font-size: 15px; line-height: 1.85; color: var(--ink-2); overflow-wrap: anywhere; }
.log-item ul { margin: 6px 0 0; padding-left: 1.3em; font-size: 15px; line-height: 1.85; color: var(--ink-2); overflow-wrap: anywhere; }
.log-item p + ul, .log-item ul + p { margin-top: 4px; }
.faq details ul { margin: 0; padding: 0 24px 20px 40px; font-size: 15px; line-height: 1.85; color: var(--ink-2); }
.notice-text ul { margin: 0; padding-left: 1.2em; }

.fb { position: relative; max-width: 760px; margin-inline: auto; display: grid; gap: 20px; padding: 32px; border-radius: 16px; border: 1px solid var(--line); background: var(--surface); }
.fb-kind { min-width: 0; margin: 0; padding: 0; border: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.fb-kind label { position: relative; cursor: pointer; }
.fb-kind input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
.fb-kind span { display: inline-block; padding: 8px 16px; border-radius: 8px; border: 1px solid var(--line-2); font-size: 14px; color: var(--ink-2); }
.fb-kind input:checked + span { color: var(--ink); border-color: color-mix(in srgb, var(--ink) 24%, transparent); background: var(--surface-2); }
.fb-kind input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
.fb-field { display: grid; gap: 8px; font-size: 14px; color: var(--ink-3); }
.fb-field select, .fb-field textarea { width: 100%; padding: 12px 16px; border-radius: 10px; border: 1px solid var(--line-2); background: var(--surface-solid); color: var(--ink); font: 400 15px/1.7 var(--font-sans); }
.fb-field select option { background: var(--surface-solid); color: var(--ink); }
.fb-field textarea { resize: vertical; min-height: 140px; }
.fb-field select:focus-visible, .fb-field textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.fb-trap { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.fb-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.fb-count { font-size: 13px; color: var(--ink-3); }
.fb-status { min-height: 1.6em; font-size: 14px; color: var(--ink-2); text-align: center; }

@media (max-width: 640px) {
  .fb { padding: 24px 16px; }
  .log-item { padding: 20px 16px; }
}

.lang-switch { display: inline-flex; align-items: center; justify-content: center; height: 36px; min-width: 52px; padding-inline: 12px; border-radius: 10px; border: 1px solid var(--line-2); background: var(--surface-solid); font-size: 14px; font-weight: 500; color: var(--ink-2); transition: color 0.15s var(--ease), border-color 0.15s var(--ease); }
.lang-switch:hover { color: var(--ink); border-color: color-mix(in srgb, var(--ink) 24%, transparent); }