:root {
  color-scheme: dark;
  --void: #05070a;
  --void-soft: #090d12;
  --panel: rgba(12, 17, 23, 0.88);
  --ink: #f4f6f2;
  --muted: #8b98a5;
  --line: rgba(222, 235, 239, 0.14);
  --cyan: #4de2d4;
  --coral: #ff6b58;
  --gold: #e8bd68;
  --blue: #3f7cff;
  --radius: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--void); }
body { margin: 0; min-width: 320px; overflow-x: hidden; background: var(--void); color: var(--ink); }
body::before { content: ""; position: fixed; z-index: 90; inset: 0; border: 1px solid rgba(255,255,255,.08); pointer-events: none; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
svg { display: block; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.space-scene { position: fixed; z-index: 0; inset: 0; pointer-events: none; }
.photo-deep-field { position: absolute; z-index: 0; inset: -7%; background: url("./assets/nasa-spitzer-nebula.jpg") center / cover no-repeat; opacity: .22; filter: saturate(.58) contrast(1.24) brightness(.48); mix-blend-mode: screen; transform: scale(1.1); transform-origin: center; will-change: transform, opacity; -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,.9), rgba(0,0,0,.72) 65%, transparent 100%); mask-image: linear-gradient(to bottom, rgba(0,0,0,.9), rgba(0,0,0,.72) 65%, transparent 100%); }
#space-canvas { position: relative; z-index: 1; width: 100%; height: 100%; }
.space-vignette { position: absolute; z-index: 3; inset: 0; box-shadow: inset 0 0 180px 60px rgba(0,0,0,.78); }
.space-noise { position: absolute; z-index: 4; inset: 0; opacity: .065; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.65'/%3E%3C/svg%3E"); mix-blend-mode: soft-light; }

.site-header { position: fixed; z-index: 50; top: 0; left: 50%; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; width: min(1280px, calc(100% - 48px)); height: 78px; transform: translateX(-50%); border-bottom: 1px solid var(--line); transition: background .4s ease, backdrop-filter .4s ease, opacity .45s ease, transform .45s ease; }
/* 顶部时显示;离开顶部(>160px)淡出上移,回到顶部淡回。
   注意 data-reveal 观察器只看 main 内,header 在 main 外挂它会被
   motion-ready 置透明后永远无人恢复 —— 别再给 header 加 data-reveal。 */
.site-header.header-hidden { opacity: 0; transform: translateX(-50%) translateY(-14px); pointer-events: none; }
.motion-ready .site-header { animation: headerIn 1s .2s cubic-bezier(.22,1,.36,1) backwards; }
@keyframes headerIn { from { opacity: 0; transform: translateX(-50%) translateY(-12px); } }
.site-header.scrolled { background: rgba(5,7,10,.68); backdrop-filter: blur(20px); }
.brand, .desktop-nav, .nav-download, .hero-actions, .hero-meta, .head-tools, .security-list span, .site-footer nav { display: flex; align-items: center; }
.brand { justify-self: start; gap: 11px; font-weight: 760; }
/* 线光版 DF —— 字形与 App 图标同源(同一套圆头笔画骨架),渲染换成
   v3 的 HUD 线光语言:无底块、青色描边、珊瑚强调点、外发微光。 */
.brand-mark { display: grid; place-items: center; width: 30px; height: 30px; filter: drop-shadow(0 0 7px rgba(77,226,212,.45)); }
.brand-mark svg { display: block; width: 100%; height: 100%; }
.brand-name { font-size: 15px; }
.brand-coordinate { margin-left: 4px; color: #60707d; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 10px; }
.desktop-nav { gap: 32px; color: #a6b0b9; font-size: 13px; }
.desktop-nav a { position: relative; padding: 12px 0; }
.desktop-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 5px; height: 1px; background: var(--cyan); transition: right .3s cubic-bezier(.22,1,.36,1); }
.desktop-nav a:hover::after { right: 0; }
.nav-download { justify-self: end; gap: 9px; min-height: 40px; padding: 0 14px; border: 1px solid var(--line); border-radius: var(--radius); font-size: 12px; font-weight: 700; backdrop-filter: blur(12px); }
.nav-download svg { width: 16px; height: 16px; }

main, .site-footer { position: relative; z-index: 2; }
.hero { position: relative; display: grid; grid-template-columns: minmax(360px,.72fr) minmax(540px,1.28fr); align-items: center; gap: 48px; width: min(1280px, calc(100% - 48px)); min-height: 100svh; margin: 0 auto; padding: 118px 0 92px; isolation: isolate; }
.hero-copy { position: relative; z-index: 4; align-self: center; }
.signal-label, .section-index { color: var(--cyan); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 10px; letter-spacing: 0; }
.signal-label { display: flex; align-items: center; gap: 9px; margin-bottom: 23px; }
.signal-label i, .connection-state i { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 16px var(--cyan); animation: blink 2.4s ease-in-out infinite; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 12px; font-size: 72px; line-height: .96; letter-spacing: 0; }
.hero-slogan { margin: 0 0 25px; color: #dce3e3; font-size: 38px; font-weight: 650; line-height: 1.2; }
.hero-slogan span { color: var(--cyan); }
.hero-lede { max-width: 570px; margin-bottom: 30px; color: #9ba7b0; font-size: 16px; line-height: 1.85; }
.hero-actions { flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 11px; min-height: 50px; padding: 0 19px; border: 1px solid transparent; border-radius: var(--radius); font-size: 13px; font-weight: 760; transition: transform .25s cubic-bezier(.22,1,.36,1), border-color .25s ease, background .25s ease; }
.button svg { width: 18px; height: 18px; }
.button-primary { background: var(--ink); color: #07100f; box-shadow: 0 16px 44px rgba(77,226,212,.12); }
.button-primary:hover { background: var(--cyan); }
.button-quiet { border-color: var(--line); background: rgba(8,12,17,.52); backdrop-filter: blur(12px); }
.button-quiet:hover { border-color: rgba(77,226,212,.52); }

.hero-product { position: relative; z-index: 3; min-width: 0; perspective: 1400px; transform-style: preserve-3d; }
.product-window { overflow: hidden; border: 1px solid rgba(216,239,240,.19); border-radius: var(--radius); background: rgba(8,12,17,.91); box-shadow: 0 55px 120px rgba(0,0,0,.72), 0 0 90px rgba(77,226,212,.08); backdrop-filter: blur(20px); transform: rotateY(-7deg) rotateX(3deg); transform-origin: center center; transition: transform .25s ease-out; }
.window-topbar { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; height: 38px; padding: 0 13px; border-bottom: 1px solid var(--line); color: #677681; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 9px; }
.traffic-lights { display: flex; gap: 6px; }
.traffic-lights i { width: 6px; height: 6px; border-radius: 50%; background: #4d5963; }
.traffic-lights i:nth-child(1) { background: var(--coral); }.traffic-lights i:nth-child(2) { background: var(--gold); }.traffic-lights i:nth-child(3) { background: var(--cyan); }
.connection-state { display: flex; align-items: center; justify-self: end; gap: 7px; color: #87949e; }
.connection-state i { width: 5px; height: 5px; }
.product-shell { display: grid; grid-template-columns: 54px minmax(180px,.7fr) minmax(330px,1.3fr); min-height: 460px; }
.app-rail { display: flex; flex-direction: column; align-items: center; gap: 17px; padding: 15px 0; border-right: 1px solid var(--line); background: #070a0e; }
.app-rail b, .app-rail span { display: grid; place-items: center; width: 31px; height: 31px; border: 1px solid var(--line); border-radius: var(--radius); font-size: 9px; }
.app-rail b { margin-bottom: 9px; border-color: rgba(77,226,212,.4); }
.app-rail b.rail-brand svg { display: block; width: 20px; height: 20px; filter: drop-shadow(0 0 5px rgba(77,226,212,.4)); }
.app-rail span { margin-top: auto; background: #1d2b30; }
.app-rail i { width: 17px; height: 17px; border: 1px solid #35424d; border-radius: 5px; }
.app-rail i.active { border-color: var(--cyan); box-shadow: inset 0 0 0 4px rgba(77,226,212,.12); }
.channel-panel { padding: 15px 12px; border-right: 1px solid var(--line); background: rgba(12,17,23,.95); }
.workspace-title { display: flex; justify-content: space-between; margin-bottom: 15px; font-size: 13px; }
.mock-search { overflow: hidden; height: 32px; margin-bottom: 20px; padding: 8px 10px; border: 1px solid rgba(255,255,255,.06); border-radius: 6px; background: #151b22; color: #66737e; font-size: 10px; white-space: nowrap; }
.channel-panel > small { display: block; margin: 0 8px 8px; color: #51606c; font-size: 9px; }
.channel { display: grid; grid-template-columns: 7px 1fr auto; align-items: center; gap: 9px; width: 100%; min-height: 54px; margin-bottom: 5px; padding: 8px; border: 0; border-radius: 6px; background: transparent; color: #e5e9e8; text-align: left; }
.channel.active { background: #182129; }
.channel > i { width: 5px; height: 5px; border-radius: 50%; background: #52616c; }
.channel.active > i { background: var(--cyan); box-shadow: 0 0 9px var(--cyan); }
.channel span b, .channel span em { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.channel span b { font-size: 10px; }.channel span em { margin-top: 4px; color: #62717c; font-size: 8px; font-style: normal; }
.channel > strong { display: grid; place-items: center; width: 17px; height: 17px; border-radius: 50%; background: var(--coral); font-size: 8px; }
.message-panel { display: grid; grid-template-rows: auto auto 1fr auto; min-width: 0; background: rgba(7,10,14,.92); }
.message-head { display: flex; align-items: center; justify-content: space-between; min-height: 57px; padding: 0 16px; border-bottom: 1px solid var(--line); }
.message-head strong, .message-head small { display: block; }.message-head strong { font-size: 11px; }.message-head small { margin-top: 4px; color: #52616c; font-size: 7px; }
.head-tools { gap: 7px; }.head-tools i { width: 24px; height: 24px; border: 1px solid var(--line); border-radius: 6px; }
.broadcast-card { display: grid; grid-template-columns: 92px 1fr auto; align-items: center; gap: 12px; margin: 14px 15px 5px; padding: 10px; border: 1px solid rgba(255,107,88,.22); border-radius: var(--radius); background: rgba(255,107,88,.055); }
.broadcast-visual { position: relative; display: grid; place-items: center; width: 92px; height: 55px; overflow: hidden; border-radius: 5px; background: #151d22; }
.broadcast-visual::before { content: ""; position: absolute; width: 82px; height: 82px; border: 1px solid rgba(77,226,212,.3); transform: rotate(45deg); }
.broadcast-visual span { position: absolute; z-index: 2; top: 5px; left: 5px; padding: 3px 5px; border-radius: 3px; background: var(--coral); font-size: 6px; font-weight: 900; }
.broadcast-visual i { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 22px 6px rgba(77,226,212,.35); }
.broadcast-card small, .broadcast-card strong, .broadcast-card em { display: block; }.broadcast-card small { color: var(--coral); font-size: 7px; }.broadcast-card strong { margin: 4px 0; font-size: 11px; }.broadcast-card em { color: #65737e; font-size: 7px; font-style: normal; }.broadcast-card > b { padding: 5px 7px; border: 1px solid rgba(77,226,212,.25); border-radius: 999px; color: var(--cyan); font-size: 7px; white-space: nowrap; }
.mock-messages { display: flex; flex-direction: column; gap: 10px; padding: 13px 15px; }
.mock-message { display: flex; align-items: flex-start; gap: 8px; }.avatar { display: grid; flex: 0 0 25px; place-items: center; width: 25px; height: 25px; border-radius: 6px; color: #08100f; font-size: 8px; font-weight: 900; }.avatar.cyan { background: var(--cyan); }.avatar.coral { background: var(--coral); }
.mock-message p { margin: 2px 0 0; color: #98a4ad; font-size: 8px; line-height: 1.5; }.mock-message p b { display: block; margin-bottom: 2px; color: #edf0ee; }
.avatar.bot { background: linear-gradient(135deg, var(--cyan), #4de2d4); padding: 4px; }
.avatar.bot svg { width: 100%; height: 100%; display: block; }
.mock-message-bot .bot-bubble { flex: 1; padding: 7px 9px; border: 1px solid rgba(111,226,218,.28); border-left: 2px solid var(--cyan); border-radius: 6px; background: rgba(77,226,212,.06); }
.bot-bubble p { margin: 0; color: #a7dfd8; font-size: 8px; line-height: 1.55; }
.bot-bubble p b { color: #d8fffa; }
.bot-bubble p:last-child { margin-top: 3px; color: #cdeee9; }
.bot-tag { display: inline-block; margin-left: 5px; padding: 0 4px; border-radius: 3px; background: var(--cyan); color: #06100f; font-size: 6px; font-weight: 900; letter-spacing: .08em; vertical-align: 1px; }
.file-message { display: grid; grid-template-columns: 48px 1fr auto; align-items: center; gap: 9px; max-width: 270px; margin-left: 33px; padding: 9px; border: 1px solid var(--line); border-radius: 6px; background: #121820; }
.file-message span { color: var(--gold); font-size: 6px; }.file-message strong { font-size: 8px; }.file-message em { color: #5e6c76; font-size: 7px; font-style: normal; }
.composer { display: flex; align-items: center; gap: 8px; min-height: 42px; margin: 0 15px 14px; padding: 5px 5px 5px 11px; border: 1px solid var(--line); border-radius: 6px; color: #53616c; font-size: 8px; }.composer span { flex: 1; }.composer button { display: grid; place-items: center; width: 29px; height: 29px; border: 0; border-radius: 5px; background: var(--cyan); color: #06100f; font-weight: 900; }
.stage-hud { position: absolute; z-index: 6; display: flex; flex-direction: column; gap: 4px; color: #61707c; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 7px; }
.stage-hud b { color: var(--cyan); font-size: 11px; }.hud-top { top: -26px; right: 34px; }.hud-side { right: -34px; bottom: 115px; writing-mode: vertical-rl; }
.orbit-chip { position: absolute; z-index: 7; display: flex; align-items: center; gap: 9px; min-width: 140px; padding: 9px 11px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(8,12,17,.82); box-shadow: 0 15px 40px rgba(0,0,0,.4); backdrop-filter: blur(15px); }
.orbit-chip > i { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }.orbit-chip span b, .orbit-chip span { display: block; }.orbit-chip span { color: #61707a; font-size: 7px; }.orbit-chip span b { margin-bottom: 2px; color: #e8ece9; font-size: 9px; }.chip-file { top: 79px; right: -23px; animation: floatOne 6s ease-in-out infinite; }.chip-live { bottom: 42px; left: -30px; animation: floatTwo 7s ease-in-out infinite; }.chip-live > i { background: var(--coral); box-shadow: 0 0 12px var(--coral); }
.hero-meta { position: absolute; left: 0; bottom: 27px; gap: 19px; color: #4d5a64; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 8px; }
.hero-meta span + span::before { content: "/"; margin-right: 19px; color: #2c363e; }
.scroll-cue { position: absolute; right: 0; bottom: 22px; display: flex; align-items: center; gap: 10px; color: #53606b; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 7px; writing-mode: vertical-rl; }
.scroll-cue span { position: relative; width: 1px; height: 52px; overflow: hidden; background: rgba(255,255,255,.12); }.scroll-cue span::after { content: ""; position: absolute; top: -100%; left: 0; width: 1px; height: 70%; background: var(--cyan); animation: scrollLine 2.2s cubic-bezier(.7,0,.3,1) infinite; }
.hero-orbit { position: absolute; z-index: -1; border: 1px solid rgba(77,226,212,.08); border-radius: 50%; transform: rotate(-18deg); }.orbit-a { right: -22%; width: 78%; aspect-ratio: 1; }.orbit-b { right: -8%; width: 48%; aspect-ratio: 1; border-color: rgba(255,107,88,.06); transform: rotate(34deg); }

.journey { position: relative; height: 320vh; border-top: 1px solid var(--line); background: rgba(5,7,10,.28); }
.journey-sticky { position: sticky; top: 0; display: grid; grid-template-columns: minmax(280px,.7fr) minmax(420px,1.3fr) minmax(280px,.7fr); align-items: center; gap: 24px; width: min(1280px, calc(100% - 48px)); height: 100vh; margin: 0 auto; overflow: hidden; }
.journey-heading { align-self: start; padding-top: 16vh; }.section-index { margin-bottom: 19px; }.journey h2, .signal-copy h2, .security-copy h2, .download-copy h2 { margin-bottom: 20px; font-size: 52px; line-height: 1.08; letter-spacing: 0; }.journey-heading > p:last-child, .security-copy > p, .download-copy > p { max-width: 460px; color: var(--muted); font-size: 14px; line-height: 1.8; }
.journey-map { position: relative; width: 100%; aspect-ratio: 1; }
.map-radar, .map-radar i { position: absolute; inset: 8%; border: 1px solid rgba(255,255,255,.07); border-radius: 50%; }.map-radar i:nth-child(1) { inset: 15%; }.map-radar i:nth-child(2) { inset: 32%; }.map-radar i:nth-child(3) { top: 50%; right: 0; bottom: auto; left: 0; border: 0; border-top: 1px solid rgba(255,255,255,.07); border-radius: 0; }.map-radar i:nth-child(4) { top: 0; right: auto; bottom: 0; left: 50%; border: 0; border-left: 1px solid rgba(255,255,255,.07); border-radius: 0; }
.map-radar::after { content: "DF"; position: absolute; top: 50%; left: 50%; display: grid; place-items: center; width: 68px; height: 68px; transform: translate(-50%,-50%) rotate(45deg); border: 1px solid rgba(77,226,212,.35); color: var(--cyan); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; box-shadow: 0 0 46px rgba(77,226,212,.08); }
.route { position: absolute; height: 1px; transform-origin: left center; background: rgba(255,255,255,.1); }.route-one { top: 50%; left: 15%; width: 35%; transform: rotate(-23deg); }.route-two { top: 50%; left: 50%; width: 37%; transform: rotate(-42deg); }.route-three { top: 50%; left: 50%; width: 35%; transform: rotate(41deg); }.route-pulse { position: absolute; z-index: 4; top: 50%; left: 50%; width: 6px; height: 6px; margin: -3px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 17px var(--cyan); transition: transform .6s cubic-bezier(.16,1,.3,1), background .4s ease; }
.planet-node { position: absolute; z-index: 3; display: grid; grid-template-columns: auto auto; align-items: center; gap: 6px 9px; transition: opacity .5s ease, transform .7s cubic-bezier(.16,1,.3,1); }.planet-node > i { grid-row: 1 / 3; width: 34px; height: 34px; border: 1px solid #53616b; border-radius: 50%; background: #0b1015; box-shadow: inset 0 0 0 8px rgba(255,255,255,.02); }.planet-node b { color: #586771; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 8px; }.planet-node span { color: #7d8a94; font-size: 10px; white-space: nowrap; }.planet-node.active { transform: scale(1.18); }.planet-node.active > i { border-color: var(--cyan); background: var(--cyan); box-shadow: 0 0 28px rgba(77,226,212,.4); }.planet-node.active span { color: var(--ink); }.node-chat { top: 30%; left: 5%; }.node-file { top: 14%; right: 2%; }.node-live { right: 4%; bottom: 17%; }
.journey-chapters { position: relative; min-height: 360px; }.journey-chapter { position: absolute; top: 50%; left: 0; width: 100%; opacity: 0; transform: translateY(calc(-50% + 42px)); pointer-events: none; transition: opacity .48s ease, transform .7s cubic-bezier(.16,1,.3,1); }.journey-chapter.active { opacity: 1; transform: translateY(-50%); pointer-events: auto; }.journey-chapter > span { color: var(--coral); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 9px; }.journey-chapter h3 { margin: 17px 0 14px; font-size: 30px; line-height: 1.2; }.journey-chapter p { color: var(--muted); font-size: 13px; line-height: 1.8; }.journey-chapter ul { display: grid; gap: 9px; margin: 22px 0 0; padding: 0; list-style: none; }.journey-chapter li { position: relative; padding-left: 18px; color: #c0c8cb; font-size: 11px; }.journey-chapter li::before { content: ""; position: absolute; top: 6px; left: 0; width: 6px; height: 6px; border: 1px solid var(--cyan); transform: rotate(45deg); }
.journey-progress { position: absolute; right: 0; bottom: 28px; left: 0; height: 1px; background: rgba(255,255,255,.08); }.journey-progress span { display: block; width: 0; height: 1px; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }

.signal-section, .security-section, .download-section { width: min(1280px, calc(100% - 48px)); margin: 0 auto; padding: 150px 0; }
.signal-section { position: relative; min-height: 100vh; border-top: 1px solid var(--line); }.signal-copy { max-width: 680px; }.signal-metrics { display: grid; grid-template-columns: repeat(3,1fr); margin-top: 80px; border-top: 1px solid var(--line); }.signal-metrics article { position: relative; min-height: 210px; padding: 30px 20px 20px 0; border-right: 1px solid var(--line); }.signal-metrics article + article { padding-left: 28px; }.signal-metrics article:last-child { border-right: 0; }.signal-metrics strong { display: block; margin-bottom: 38px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 62px; font-weight: 500; }.signal-metrics strong small { margin-left: 5px; color: var(--cyan); font-size: 15px; }.signal-metrics span { color: var(--muted); font-size: 12px; }.signal-metrics i { position: absolute; right: -3px; top: -3px; width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 14px var(--cyan); }

.security-section { position: relative; display: grid; grid-template-columns: 1fr minmax(390px,.78fr); align-items: center; gap: 92px; min-height: 100vh; border-top: 1px solid var(--line); }.security-copy { position: relative; z-index: 2; }.security-list { display: grid; gap: 0; margin-top: 35px; border-top: 1px solid var(--line); }.security-list span { gap: 17px; min-height: 52px; border-bottom: 1px solid var(--line); color: #b8c1c5; font-size: 12px; }.security-list i { color: var(--cyan); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 8px; font-style: normal; }
.security-orbit { position: absolute; z-index: 0; top: 50%; left: 18%; width: 440px; height: 440px; transform: translate(-50%,-50%); border: 1px solid rgba(77,226,212,.08); border-radius: 50%; }.security-orbit span { position: absolute; inset: 13%; border: 1px solid rgba(255,255,255,.05); border-radius: 50%; }.security-orbit span:nth-child(2) { inset: 28%; }.security-orbit span:nth-child(3) { inset: 43%; background: rgba(77,226,212,.07); box-shadow: 0 0 70px rgba(77,226,212,.12); }.security-orbit i { position: absolute; top: 5%; left: 22%; width: 7px; height: 7px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 18px var(--coral); animation: orbitParticle 10s linear infinite; transform-origin: 120px 190px; }
.release-console { position: relative; z-index: 2; min-height: 430px; padding: 25px; border: 1px solid rgba(77,226,212,.22); border-radius: var(--radius); background: rgba(6,10,14,.76); box-shadow: 0 45px 90px rgba(0,0,0,.48), inset 0 0 60px rgba(77,226,212,.025); backdrop-filter: blur(20px); }.console-head { display: flex; justify-content: space-between; padding-bottom: 20px; border-bottom: 1px solid var(--line); color: #64727d; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 9px; }.console-head i { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }.release-console > strong { display: block; margin: 35px 0 4px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 58px; font-weight: 500; }.release-console > p { margin-bottom: 27px; color: var(--cyan); font-size: 9px; }.console-row { display: grid; grid-template-columns: 1fr auto auto; align-items: center; min-height: 52px; border-top: 1px solid var(--line); color: #7f8d97; font-size: 10px; }.console-row b { color: #dfe5e3; font-size: 9px; }.console-row i { width: 5px; height: 5px; margin-left: 13px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }.release-console > small { display: block; margin-top: 22px; color: #47545e; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 7px; }

.download-section { position: relative; min-height: 100vh; border-top: 1px solid var(--line); }.download-copy { display: grid; grid-template-columns: 1fr 1fr; align-items: end; column-gap: 30px; }.download-copy .section-index { grid-column: 1 / -1; }.download-copy h2 { margin-bottom: 0; }.download-copy > p:last-child { justify-self: end; margin: 0; padding-bottom: 5px; }.download-grid { display: grid; grid-template-columns: repeat(4,1fr); margin-top: 72px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }.download-card { position: relative; display: flex; flex-direction: column; min-height: 285px; padding: 24px; overflow: hidden; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(7,10,14,.58); transition: background .35s ease, transform .45s cubic-bezier(.16,1,.3,1); }.download-card::before { content: ""; position: absolute; inset: 0; transform: translateY(101%); background: var(--cyan); transition: transform .55s cubic-bezier(.16,1,.3,1); }.download-card:hover::before { transform: translateY(0); }.download-card:hover { color: #06100f; }.download-card > * { position: relative; z-index: 1; }.card-number { color: #53616b; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 9px; }.download-card .system { margin-top: auto; color: #7c8992; font-size: 10px; }.download-card strong { margin: 8px 0 7px; font-size: 22px; }.download-card small { color: #64727c; font-size: 9px; }.download-card > i { position: absolute; z-index: 1; top: 20px; right: 22px; display: grid; place-items: center; width: 32px; height: 32px; border: 1px solid var(--line); border-radius: 50%; font-style: normal; }.download-card:hover .system, .download-card:hover small, .download-card:hover .card-number { color: rgba(6,16,15,.62); }.download-card.recommended::after { content: "RECOMMENDED"; position: absolute; z-index: 2; top: 25px; left: 55px; color: var(--coral); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 7px; }

.site-footer { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 18px; width: min(1280px, calc(100% - 48px)); min-height: 230px; margin: 0 auto; padding: 60px 0 35px; border-top: 1px solid var(--line); }.footer-brand { align-self: start; }.site-footer p { grid-column: 1; margin: 0; color: #707e88; font-size: 13px; }.site-footer nav { grid-column: 2; grid-row: 1; gap: 22px; color: #89959e; font-size: 11px; }.site-footer small { grid-column: 2; color: #46525b; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 7px; }.site-footer .asset-credit { grid-column: 1; }.site-footer .footer-copy { grid-column: 1; font-size: 10px; color: #707e88; }

.motion-ready [data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity .9s cubic-bezier(.22,1,.36,1), transform 1s cubic-bezier(.22,1,.36,1); }.motion-ready .hero [data-reveal] { animation: revealIn 1.15s cubic-bezier(.22,1,.36,1) forwards; }.motion-ready .hero-product[data-reveal] { animation-delay: .15s; transform: translateY(28px) scale(.96); }.motion-ready .hero-meta[data-reveal] { animation-delay: .55s; }.motion-ready .is-visible[data-reveal] { opacity: 1; transform: translateY(0); }

@keyframes revealIn { to { opacity: 1; transform: translateY(0) scale(1); } }
@keyframes blink { 0%,100% { opacity: .4; transform: scale(.8); } 50% { opacity: 1; transform: scale(1.15); } }
@keyframes floatOne { 0%,100% { transform: translate3d(0,0,16px); } 50% { transform: translate3d(-8px,-13px,28px); } }
@keyframes floatTwo { 0%,100% { transform: translate3d(0,0,12px); } 50% { transform: translate3d(11px,10px,24px); } }
@keyframes scrollLine { 0% { transform: translateY(0); } 100% { transform: translateY(280%); } }
@keyframes orbitParticle { to { transform: rotate(360deg); } }

@media (max-width: 1080px) {
  .hero { grid-template-columns: minmax(300px,.7fr) minmax(470px,1.3fr); gap: 25px; }
  h1 { font-size: 60px; }.hero-slogan { font-size: 32px; }.product-shell { grid-template-columns: 48px 165px minmax(280px,1fr); }.app-rail { gap: 13px; }.broadcast-card { grid-template-columns: 75px 1fr; }.broadcast-card > b { display: none; }.broadcast-visual { width: 75px; }
  .journey-sticky { grid-template-columns: minmax(240px,.75fr) minmax(360px,1.2fr) minmax(250px,.75fr); }.journey h2, .signal-copy h2, .security-copy h2, .download-copy h2 { font-size: 44px; }
}

@media (max-width: 860px) {
  .site-header { grid-template-columns: 1fr auto; width: calc(100% - 28px); }.desktop-nav { display: none; }.brand-coordinate { display: none; }
  .hero { grid-template-columns: 1fr; width: min(700px, calc(100% - 28px)); min-height: auto; padding: 132px 0 110px; }.hero-copy { max-width: 620px; }.hero-product { margin-top: 24px; }.hero-meta { bottom: 30px; }.scroll-cue { display: none; }
  .journey { height: auto; padding: 110px 0; }.journey-sticky { position: relative; display: grid; grid-template-columns: 1fr; width: min(700px, calc(100% - 28px)); height: auto; overflow: visible; }.journey-heading { padding-top: 0; }.journey-map { max-width: 560px; margin: 30px auto; }.journey-chapters { min-height: auto; }.journey-chapter { position: relative; top: auto; margin-bottom: 22px; padding: 24px 0; opacity: 1; transform: none; border-top: 1px solid var(--line); }.journey-progress { display: none; }
  .signal-section, .security-section, .download-section, .site-footer { width: min(700px, calc(100% - 28px)); }.security-section { grid-template-columns: 1fr; gap: 55px; }.security-orbit { left: 50%; }.download-grid { grid-template-columns: repeat(2,1fr); }.download-copy { grid-template-columns: 1fr; }.download-copy > p:last-child { justify-self: start; margin-top: 20px; }
}

@media (max-width: 600px) {
  .site-header { height: 68px; }.nav-download { width: 40px; padding: 0; justify-content: center; }.nav-download span { display: none; }
  h1 { font-size: 48px; }.hero-slogan { font-size: 28px; }.hero-lede { font-size: 14px; }.hero-actions .button { flex: 1; min-width: 145px; }
  .hero-product { width: calc(100% + 14px); overflow-x: auto; overflow-y: hidden; padding: 18px 0 25px; perspective: none; }.product-window { width: 650px; transform: none; }.orbit-chip, .stage-hud { display: none; }.hero-meta { gap: 10px; font-size: 6px; }.hero-meta span + span::before { margin-right: 10px; }
  .journey h2, .signal-copy h2, .security-copy h2, .download-copy h2 { font-size: 36px; }.journey-map { margin-left: -10%; width: 120%; }.journey-chapter h3 { font-size: 25px; }
  .signal-section, .security-section, .download-section { min-height: auto; padding: 105px 0; }.signal-metrics { grid-template-columns: 1fr; margin-top: 55px; }.signal-metrics article, .signal-metrics article + article { min-height: 145px; padding: 25px 0; border-right: 0; border-bottom: 1px solid var(--line); }.signal-metrics strong { margin-bottom: 22px; font-size: 50px; }.signal-metrics i { display: none; }
  .release-console { min-height: 390px; padding: 20px; }.release-console > strong { font-size: 46px; }.download-grid { grid-template-columns: 1fr; }.download-card { min-height: 210px; }.site-footer { grid-template-columns: 1fr; }.site-footer nav, .site-footer small { grid-column: 1; grid-row: auto; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}

.journey {
  background: rgba(5, 7, 10, 0.46);
}

.signal-section,
.security-section,
.download-section {
  isolation: isolate;
}

.signal-section::before,
.security-section::before,
.download-section::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 100vw;
  transform: translateX(-50%);
  border-top: 1px solid rgba(222, 235, 239, 0.045);
  border-bottom: 1px solid rgba(222, 235, 239, 0.045);
}

.signal-section::before { background: rgba(5, 7, 10, 0.48); }
.security-section::before { background: rgba(5, 7, 10, 0.62); }
.download-section::before { background: rgba(5, 7, 10, 0.72); }

.product-window,
.hero-copy {
  will-change: transform, opacity;
}

.low-power .space-noise {
  display: none;
}

.low-power .product-window,
.low-power .orbit-chip,
.low-power .release-console,
.low-power .site-header.scrolled {
  backdrop-filter: none;
}

/* Final hero composition */
.hero {
  display: grid;
  grid-template-columns: minmax(360px, 0.78fr) minmax(590px, 1.22fr);
  align-items: center;
  gap: 72px;
  min-height: 100svh;
  padding: 110px 0 82px;
}

.hero-copy {
  position: relative;
  top: auto;
  left: auto;
  width: auto;
  max-width: 570px;
  align-self: center;
}

.hero-copy h1 {
  margin-bottom: 18px;
  font-size: 82px;
  line-height: 0.94;
}

.hero-slogan {
  margin-bottom: 22px;
  font-size: 36px;
  line-height: 1.14;
}

.hero-lede {
  max-width: 510px;
  margin-bottom: 28px;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.8;
}

.hero-actions {
  gap: 10px;
}

.hero-product {
  position: relative;
  right: auto;
  bottom: auto;
  width: 100%;
  max-width: 760px;
  justify-self: end;
  align-self: center;
  margin: 18px 0 0;
}

.product-window {
  transform: rotateY(-3deg) rotateX(1deg);
  box-shadow: 0 40px 110px rgba(0, 0, 0, 0.72), 0 0 90px rgba(77, 226, 212, 0.065);
}

.product-shell {
  grid-template-columns: 52px minmax(188px, 0.72fr) minmax(330px, 1.28fr);
  min-height: 448px;
}

.hero::after {
  right: 0;
  bottom: 24px;
  font-size: 116px;
  opacity: 0.075;
}

.deep-space-label {
  right: -1px;
}

@media (max-width: 1180px) {
  .hero {
    grid-template-columns: minmax(320px, 0.72fr) minmax(520px, 1.28fr);
    gap: 42px;
  }

  .hero-copy h1 { font-size: 68px; }
  .hero-slogan { font-size: 31px; }
  .hero-product { right: auto; width: 100%; }
  .product-shell { grid-template-columns: 48px 172px minmax(300px, 1fr); }
}

@media (max-width: 940px) {
  .hero {
    grid-template-columns: 1fr;
    width: min(760px, calc(100% - 28px));
    min-height: auto;
    padding: 132px 0 110px;
  }

  .hero-copy {
    max-width: 640px;
  }

  .hero-product {
    width: 100%;
    max-width: 760px;
    margin-top: 58px;
  }

  .product-window { transform: none; }
  .deep-space-label { display: none; }
}

/* NASA deep-field composite: rendered above the opaque WebGL sky, below all UI. */
.photo-deep-field {
  z-index: 2;
  inset: -5%;
  width: 110%;
  height: 110%;
  max-width: none;
  object-fit: cover;
  object-position: 44% 48%;
  background: none;
  visibility: hidden;
  opacity: 0;
  filter: saturate(.36) contrast(1.32) brightness(.56);
  mix-blend-mode: screen;
  -webkit-mask-image: linear-gradient(112deg, rgba(0,0,0,.94) 0%, rgba(0,0,0,.76) 48%, rgba(0,0,0,.3) 76%, transparent 100%);
  mask-image: linear-gradient(112deg, rgba(0,0,0,.94) 0%, rgba(0,0,0,.76) 48%, rgba(0,0,0,.3) 76%, transparent 100%);
  transition: opacity 1.2s ease;
}

html[data-nasa-background="ready"] .photo-deep-field {
  visibility: visible;
}

#space-canvas { z-index: 1; }
.space-vignette { z-index: 4; }
.space-noise { z-index: 5; }

@media (max-width: 600px) {
  .hero-copy h1 { font-size: 52px; }
  .hero-slogan { font-size: 29px; }
  .hero-lede { font-size: 14px; }
  .hero-product { width: calc(100% + 14px); margin-top: 44px; }
  .product-window { transform: none; }
}

.window-topbar {
  height: 40px;
  font-size: 10px;
}

.workspace-title {
  font-size: 14px;
}

.mock-search {
  height: 34px;
  padding-top: 9px;
  font-size: 10px;
}

.channel {
  min-height: 58px;
}

.channel span b {
  font-size: 11px;
}

.channel span em,
.channel-panel > small {
  font-size: 9px;
}

.message-head strong {
  font-size: 12px;
}

.message-head small,
.broadcast-card small,
.broadcast-card em,
.broadcast-card > b {
  font-size: 8px;
}

.broadcast-card strong {
  font-size: 12px;
}

.mock-message p {
  font-size: 9px;
  line-height: 1.6;
}

.file-message strong,
.composer {
  font-size: 9px;
}

.file-message span,
.file-message em {
  font-size: 8px;
}

/* Cinematic scale pass */
.space-vignette {
  box-shadow: inset 0 0 120px 24px rgba(0, 0, 0, 0.58);
}

.space-scene::after {
  content: "";
  position: absolute;
  right: -16%;
  bottom: -41%;
  width: 88%;
  aspect-ratio: 1;
  border: 1px solid rgba(77, 226, 212, 0.09);
  border-radius: 50%;
  box-shadow: 0 -30px 100px rgba(77, 226, 212, 0.055);
  transform: rotate(-13deg);
  z-index: 2;
}

.motion-ready .space-scene {
  transform-origin: 42% 46%;
  animation: cosmicArrival 2.2s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.motion-ready body::after {
  content: "";
  position: fixed;
  z-index: 80;
  top: 0;
  bottom: 0;
  left: -28%;
  width: 22%;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(191, 255, 247, 0.19), transparent);
  transform: skewX(-16deg) translateX(-480%);
  animation: lightPass 1.65s 0.38s cubic-bezier(0.7, 0, 0.22, 1) both;
}

.site-header,
.hero,
.journey-sticky,
.signal-section,
.security-section,
.download-section,
.site-footer {
  width: min(1440px, calc(100% - 64px));
}

.hero {
  display: block;
  min-height: 112svh;
  padding: 0;
}

.hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 13%;
  right: -30%;
  width: 96%;
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, 0.045);
  border-radius: 50%;
  transform: rotate(28deg);
}

.hero::after {
  content: "DFCHAT";
  position: absolute;
  z-index: 0;
  right: -18px;
  bottom: 4.5vh;
  color: transparent;
  font-size: 190px;
  font-weight: 900;
  line-height: 0.8;
  letter-spacing: 0;
  opacity: 0.14;
  pointer-events: none;
  -webkit-text-stroke: 1px rgba(221, 239, 239, 0.34);
}

.hero-copy {
  position: absolute;
  top: 21vh;
  left: 0;
  width: min(760px, 58%);
}

.hero-copy::before {
  content: "";
  position: absolute;
  top: -36px;
  left: 0;
  width: 76px;
  height: 1px;
  background: var(--cyan);
  box-shadow: 0 0 20px rgba(77, 226, 212, 0.8);
}

h1 {
  margin-bottom: 20px;
  font-size: 112px;
  font-weight: 760;
  line-height: 0.9;
}

.hero-slogan {
  margin-bottom: 30px;
  font-size: 50px;
  font-weight: 520;
  line-height: 1.08;
}

.hero-slogan span {
  color: #f4f6f2;
  text-shadow: 0 0 34px rgba(77, 226, 212, 0.18);
}

.hero-lede {
  max-width: 510px;
  padding-left: 18px;
  border-left: 1px solid rgba(77, 226, 212, 0.5);
}

.hero-product {
  position: absolute;
  z-index: 3;
  right: -3%;
  bottom: 10vh;
  width: min(720px, 50%);
  filter: saturate(0.9);
}

.hero-product::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -36px;
  border: 1px solid rgba(77, 226, 212, 0.065);
  transform: rotate(-2deg);
}

.product-window {
  background: rgba(7, 11, 15, 0.82);
  box-shadow: 0 55px 140px rgba(0, 0, 0, 0.78), 0 0 110px rgba(77, 226, 212, 0.09);
}

.deep-space-label {
  position: absolute;
  z-index: 2;
  top: 16vh;
  right: 1.5%;
  display: flex;
  align-items: center;
  gap: 15px;
  color: rgba(226, 236, 236, 0.35);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 8px;
  writing-mode: vertical-rl;
}

.deep-space-label b {
  color: var(--cyan);
  font-size: 28px;
  font-weight: 300;
  text-shadow: 0 0 22px rgba(77, 226, 212, 0.7);
}

.hero-meta {
  bottom: 31px;
}

.scroll-cue {
  bottom: 30px;
}

@media (max-width: 1120px) {
  .site-header,
  .hero,
  .journey-sticky,
  .signal-section,
  .security-section,
  .download-section,
  .site-footer {
    width: calc(100% - 40px);
  }

  h1 { font-size: 88px; }
  .hero-slogan { font-size: 40px; }
  .hero-copy { width: 56%; }
  .hero-product { right: -7%; width: 59%; }
  .hero::after { font-size: 142px; }
}

@media (max-width: 860px) {
  .hero {
    display: grid;
    width: min(700px, calc(100% - 28px));
    min-height: auto;
    padding: 135px 0 112px;
  }

  .hero-copy,
  .hero-product {
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    width: 100%;
  }

  .hero-copy { max-width: 660px; }
  .hero-product { margin-top: 85px; }
  h1 { font-size: 78px; }
  .hero-slogan { font-size: 38px; }
  .deep-space-label { display: none; }
  .hero::after { right: 0; bottom: 45px; font-size: 112px; opacity: 0.09; }
}

@media (max-width: 600px) {
  h1 { font-size: 54px; }
  .hero-slogan { font-size: 30px; }
  .hero-product { width: calc(100% + 14px); margin-top: 58px; }
  .space-vignette { box-shadow: inset 0 0 70px 10px rgba(0, 0, 0, 0.52); }
  .hero::after { font-size: 66px; }
}

@keyframes cosmicArrival {
  0% { opacity: 0; filter: brightness(3.2) blur(12px); transform: scale(1.18); }
  35% { opacity: 1; filter: brightness(1.8) blur(3px); }
  100% { opacity: 1; filter: brightness(1) blur(0); transform: scale(1); }
}

@keyframes lightPass {
  0% { opacity: 0; transform: skewX(-16deg) translateX(-480%); }
  18% { opacity: 1; }
  100% { opacity: 0; transform: skewX(-16deg) translateX(780%); }
}

@media (min-width: 1121px) {
  .journey-sticky {
    grid-template-columns: minmax(270px, 0.64fr) minmax(520px, 1.48fr) minmax(300px, 0.72fr);
  }

  .journey-map {
    transform: scale(1.12);
  }

  .journey h2,
  .signal-copy h2,
  .security-copy h2,
  .download-copy h2 {
    font-size: 60px;
  }

  .journey-chapter h3 {
    font-size: 36px;
  }

  .journey-chapter::before {
    position: absolute;
    z-index: -1;
    top: -112px;
    right: 0;
    color: transparent;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 170px;
    font-weight: 800;
    line-height: 1;
    opacity: 0.16;
    -webkit-text-stroke: 1px rgba(191, 255, 247, 0.5);
  }

  .journey-chapter:nth-child(1)::before { content: "01"; }
  .journey-chapter:nth-child(2)::before { content: "02"; }
  .journey-chapter:nth-child(3)::before { content: "03"; }
}

.cosmic-prologue {
  position: relative;
  height: 300vh;
  border-top: 1px solid rgba(222, 235, 239, 0.08);
}

.prologue-sticky {
  position: sticky;
  top: 0;
  display: grid;
  place-items: center;
  width: min(1440px, calc(100% - 64px));
  height: 100vh;
  margin: 0 auto;
  overflow: hidden;
}

.prologue-kicker {
  position: absolute;
  top: 14vh;
  left: 0;
  color: rgba(173, 191, 195, 0.52);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 9px;
}

.prologue-kicker::before {
  content: "";
  display: inline-block;
  width: 42px;
  height: 1px;
  margin-right: 13px;
  vertical-align: middle;
  background: var(--cyan);
  box-shadow: 0 0 14px rgba(77, 226, 212, 0.65);
}

.prologue-phase {
  position: absolute;
  width: min(1100px, 90%);
  opacity: 0;
  text-align: center;
  will-change: opacity, transform;
}

.prologue-phase small {
  display: block;
  margin-bottom: 24px;
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
}

.prologue-phase h2 {
  margin: 0;
  font-size: 92px;
  font-weight: 650;
  line-height: 0.98;
  text-shadow: 0 0 65px rgba(5, 7, 10, 0.92);
}

.prologue-phase em {
  color: #d8fffa;
  font-style: normal;
  text-shadow: 0 0 42px rgba(77, 226, 212, 0.34);
}

.prologue-readout {
  position: absolute;
  right: 0;
  bottom: 12vh;
  display: grid;
  gap: 7px;
  justify-items: end;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.prologue-readout span {
  color: #53616c;
  font-size: 7px;
}

.prologue-readout b {
  color: rgba(210, 230, 231, 0.72);
  font-size: 11px;
  font-weight: 500;
}

.prologue-progress {
  position: absolute;
  right: 0;
  bottom: 8vh;
  left: 0;
  height: 1px;
  background: rgba(255, 255, 255, 0.07);
}

.prologue-progress span {
  display: block;
  width: 0;
  height: 1px;
  background: var(--cyan);
  box-shadow: 0 0 18px rgba(77, 226, 212, 0.85);
}

@media (max-width: 860px) {
  .cosmic-prologue { height: 240vh; }
  .prologue-sticky { width: min(700px, calc(100% - 28px)); }
  .prologue-phase h2 { font-size: 62px; }
}

@media (max-width: 600px) {
  .prologue-kicker { top: 13vh; font-size: 7px; }
  .prologue-phase { width: 100%; }
  .prologue-phase h2 { font-size: 43px; }
  .prologue-phase small { margin-bottom: 18px; }
  .prologue-readout { bottom: 12vh; }
}

@media (prefers-reduced-motion: reduce) {
  .cosmic-prologue {
    height: auto;
    padding: 100px 0;
  }

  .prologue-sticky {
    position: relative;
    display: block;
    height: auto;
    overflow: visible;
  }

  .prologue-kicker,
  .prologue-phase {
    position: relative;
    top: auto;
    left: auto;
  }

  .prologue-phase {
    width: 100%;
    padding: 70px 0;
    opacity: 1 !important;
    transform: none !important;
  }

  .prologue-readout,
  .prologue-progress {
    display: none;
  }
}

/* Hero layout lock: keep this after the cinematic layers. */
.hero {
  display: grid;
  grid-template-columns: minmax(360px, 0.78fr) minmax(590px, 1.22fr);
  align-items: center;
  gap: 72px;
  min-height: 100svh;
  padding: 110px 0 82px;
}

.hero-copy {
  position: relative;
  top: auto;
  right: auto;
  bottom: auto;
  left: auto;
  width: auto;
  max-width: 570px;
  align-self: center;
}

.hero-copy h1 {
  margin-bottom: 18px;
  font-size: 82px;
  line-height: 0.94;
}

.hero-slogan {
  margin-bottom: 22px;
  font-size: 36px;
  line-height: 1.14;
}

.hero-lede {
  max-width: 510px;
  margin-bottom: 28px;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.8;
}

.hero-product {
  position: relative;
  top: auto;
  right: auto;
  bottom: auto;
  left: auto;
  width: 100%;
  max-width: 760px;
  justify-self: end;
  align-self: center;
  margin: 18px 0 0;
}

.product-window {
  transform: rotateY(-3deg) rotateX(1deg);
}

.product-shell {
  grid-template-columns: 52px minmax(188px, 0.72fr) minmax(330px, 1.28fr);
  min-height: 448px;
}

.hero::after {
  right: 0;
  bottom: 24px;
  font-size: 116px;
  opacity: 0.075;
}

@media (max-width: 1180px) {
  .hero {
    grid-template-columns: minmax(320px, 0.72fr) minmax(520px, 1.28fr);
    gap: 42px;
  }

  .hero-copy h1 { font-size: 68px; }
  .hero-slogan { font-size: 31px; }
  .hero-product { right: auto; width: 100%; }
  .product-shell { grid-template-columns: 48px 172px minmax(300px, 1fr); }
}

@media (max-width: 940px) {
  .hero {
    grid-template-columns: 1fr;
    width: min(760px, calc(100% - 28px));
    min-height: auto;
    padding: 132px 0 110px;
  }

  .hero-copy { max-width: 640px; }
  .hero-product { width: 100%; max-width: 760px; margin-top: 58px; }
  .product-window { transform: none; }
  .deep-space-label { display: none; }
}

@media (max-width: 600px) {
  .hero-copy h1 { font-size: 52px; }
  .hero-slogan { font-size: 29px; }
  .hero-lede { font-size: 14px; }
  .hero-product { width: calc(100% + 14px); margin-top: 44px; }
}

/* ===== 档案舱(用户协议/隐私政策 in-page 展开)===== */
.os-hint { margin: 16px 2px 0; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 10px; letter-spacing: .16em; color: rgba(111,226,218,.62); }
body.doc-lock { overflow: hidden; }
.doc-overlay { position: fixed; inset: 0; z-index: 90; display: flex; align-items: center; justify-content: center; padding: 4vh 18px; }
.doc-overlay[hidden] { display: none; }
.doc-backdrop { position: absolute; inset: 0; background: rgba(4,6,10,.52); -webkit-backdrop-filter: blur(14px) saturate(1.08); backdrop-filter: blur(14px) saturate(1.08); opacity: 0; transition: opacity .5s ease; }
.doc-panel { position: relative; display: flex; flex-direction: column; width: min(720px, 100%); max-height: 86vh; background: linear-gradient(180deg, rgba(10,15,22,.94), rgba(6,9,14,.96)); border: 1px solid rgba(111,226,218,.16); border-radius: 18px; box-shadow: 0 30px 90px rgba(0,0,0,.55); opacity: 0; transform: translateY(46px) scale(.985); transition: opacity .55s cubic-bezier(.22,1,.36,1), transform .65s cubic-bezier(.22,1,.36,1); }
.doc-overlay.open .doc-backdrop { opacity: 1; }
.doc-overlay.open .doc-panel { opacity: 1; transform: none; }
.doc-overlay.closing .doc-backdrop { opacity: 0; transition-duration: .3s; }
.doc-overlay.closing .doc-panel { opacity: 0; transform: translateY(18px) scale(.992); transition-duration: .3s, .32s; }
.doc-head { display: flex; align-items: center; justify-content: space-between; padding: 20px 26px 12px 34px; }
.doc-kicker { margin: 0; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 9px; letter-spacing: .22em; color: rgba(111,226,218,.72); }
.doc-close { display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid var(--line); border-radius: 50%; background: transparent; color: #8b979f; font-size: 12px; cursor: pointer; transition: color .25s ease, border-color .25s ease, transform .3s ease; }
.doc-close:hover { color: #eaf6f4; border-color: rgba(111,226,218,.45); transform: rotate(90deg); }
.doc-scroll { overflow-y: auto; padding: 4px 34px 26px; scrollbar-width: thin; scrollbar-color: rgba(111,226,218,.25) transparent; }
.doc-scroll::-webkit-scrollbar { width: 6px; }
.doc-scroll::-webkit-scrollbar-thumb { background: rgba(111,226,218,.22); border-radius: 3px; }
.doc-body h1 { margin: 6px 0 4px; font-size: 24px; color: #f2f7f6; }
.doc-body .meta { margin: 0 0 18px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 10px; letter-spacing: .08em; color: #5d6a73; }
.doc-body .notice { margin: 0 0 22px; padding: 12px 14px; border: 1px solid rgba(111,226,218,.22); border-radius: 10px; background: rgba(111,226,218,.06); color: #9adfd8; font-size: 13px; line-height: 1.75; }
.doc-body h2 { margin: 26px 0 8px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.06); font-size: 15px; color: #dceae8; }
.doc-body h2:first-of-type { border-top: none; padding-top: 0; }
.doc-body p, .doc-body li { color: #94a3ad; font-size: 13.5px; line-height: 1.85; }
.doc-body ul { padding-left: 18px; margin: 8px 0; }
.doc-body strong { color: #e8f2f1; }
.doc-body a { color: var(--cyan); }
.doc-body > * { opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .55s cubic-bezier(.22,1,.36,1); }
.doc-overlay.open .doc-body > * { opacity: 1; transform: none; }
.doc-foot { display: flex; align-items: center; justify-content: space-between; padding: 12px 34px 16px; border-top: 1px solid rgba(255,255,255,.05); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 8px; letter-spacing: .18em; color: #4d5a63; }
.doc-foot a { color: rgba(111,226,218,.6); text-decoration: none; }
.doc-foot a:hover { color: var(--cyan); }
@media (max-width: 700px) { .doc-panel { max-height: 92vh; } .doc-head, .doc-scroll, .doc-foot { padding-left: 20px; padding-right: 20px; } }
@media (prefers-reduced-motion: reduce) { .doc-panel, .doc-backdrop, .doc-body > * { transition: none !important; } }
.doc-body table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 12.5px; }
.doc-body th, .doc-body td { border: 1px solid rgba(255,255,255,.08); padding: 8px 10px; color: #94a3ad; text-align: left; vertical-align: top; line-height: 1.7; }
.doc-body th { color: #dceae8; background: rgba(255,255,255,.03); font-weight: 600; }

/* ===== 更多装备(FULL LOADOUT)—— journey 后的全功能速览格 ===== */
.loadout { position: relative; width: min(1280px, calc(100% - 48px)); margin: 0 auto; padding: 96px 0 110px; border-top: 1px solid var(--line); }
.loadout-head h3 { margin: 0 0 40px; font-size: 30px; line-height: 1.2; }
.loadout-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.loadout-card { position: relative; padding: 22px 22px 26px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(7,10,14,.42); transition: background .35s ease; }
.loadout-card:hover { background: rgba(111,226,218,.05); }
.loadout-card > span { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 8px; letter-spacing: .18em; color: var(--coral); }
.loadout-card strong { display: block; margin: 12px 0 8px; font-size: 16px; color: #eef4f3; }
.loadout-card p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.75; }
/* 级联进场:同排卡片依次浮现 */
.motion-ready .loadout-card:nth-child(2) { transition-delay: .06s; }
.motion-ready .loadout-card:nth-child(3) { transition-delay: .12s; }
.motion-ready .loadout-card:nth-child(4) { transition-delay: .18s; }
.motion-ready .loadout-card:nth-child(6) { transition-delay: .06s; }
.motion-ready .loadout-card:nth-child(7) { transition-delay: .12s; }
.motion-ready .loadout-card:nth-child(8) { transition-delay: .18s; }
.motion-ready .loadout-card:nth-child(10) { transition-delay: .06s; }
.motion-ready .loadout-card:nth-child(11) { transition-delay: .12s; }
.motion-ready .loadout-card:nth-child(12) { transition-delay: .18s; }
@media (max-width: 940px) { .loadout { width: min(700px, calc(100% - 28px)); padding: 70px 0 80px; } .loadout-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .loadout-grid { grid-template-columns: 1fr; } .loadout-head h3 { font-size: 25px; } }

/* ===== 语言切换(EN / 中)===== */
.nav-side { display: flex; align-items: center; justify-self: end; gap: 12px; }
.lang-toggle { display: inline-flex; align-items: center; justify-content: center; min-width: 44px; height: 32px; padding: 0 12px; border: 1px solid var(--line); border-radius: 999px; background: transparent; color: #9fb3ae; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 10px; letter-spacing: .14em; cursor: pointer; transition: color .25s ease, border-color .25s ease; }
.lang-toggle:hover { color: #eaf6f4; border-color: rgba(111,226,218,.45); }


/* ===== 在线客服:毛玻璃未来感悬浮(默认收起小圆气泡 → 点开面板嵌 /u/100000)===== */
.cs { position: fixed; right: 22px; bottom: 22px; z-index: 80; }
/* —— 收起态:青色发光圆气泡 —— */
.cs-bubble { position: relative; display: grid; place-items: center; width: 58px; height: 58px; border: 1px solid rgba(111,226,218,.4); border-radius: 50%; cursor: pointer; background: radial-gradient(120% 120% at 30% 25%, rgba(77,226,212,.28), rgba(8,12,16,.82)); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); box-shadow: 0 10px 34px rgba(0,0,0,.45), 0 0 22px rgba(77,226,212,.28), inset 0 0 12px rgba(111,226,218,.14); transition: transform .25s cubic-bezier(.22,1,.36,1), box-shadow .25s ease; }
.cs-bubble:hover { transform: translateY(-3px) scale(1.05); box-shadow: 0 14px 40px rgba(0,0,0,.5), 0 0 30px rgba(77,226,212,.45); }
.cs-bubble-ico { width: 30px; height: 30px; display: grid; place-items: center; }
.cs-bubble-ico svg { width: 26px; height: 26px; display: block; filter: drop-shadow(0 0 4px rgba(6,16,15,.5)); }
.cs-bubble-ico svg g { stroke: #eafffb; }
.cs-bubble-pulse { position: absolute; inset: -1px; border-radius: 50%; border: 1px solid rgba(111,226,218,.5); animation: csPulse 2.6s ease-out infinite; }
@keyframes csPulse { 0% { transform: scale(1); opacity: .6; } 70%, 100% { transform: scale(1.5); opacity: 0; } }
.cs.cs-on .cs-bubble { display: none; }
/* —— 展开态:毛玻璃面板 —— */
.cs-panel { position: absolute; right: 0; bottom: 0; display: flex; flex-direction: column; width: 372px; height: 560px; max-height: calc(100vh - 44px); border: 1px solid rgba(111,226,218,.22); border-radius: 20px; overflow: hidden; background: linear-gradient(180deg, rgba(9,14,20,.82), rgba(6,9,14,.9)); -webkit-backdrop-filter: blur(22px) saturate(1.1); backdrop-filter: blur(22px) saturate(1.1); box-shadow: 0 30px 80px rgba(0,0,0,.6), 0 0 0 1px rgba(111,226,218,.06), inset 0 1px 0 rgba(255,255,255,.04); transform-origin: bottom right; animation: csIn .42s cubic-bezier(.22,1,.36,1); }
@keyframes csIn { from { opacity: 0; transform: translateY(26px) scale(.95); } }
.cs-panel[hidden] { display: none; }
.cs-bar { display: flex; align-items: center; gap: 10px; padding: 13px 14px; border-bottom: 1px solid rgba(255,255,255,.06); background: linear-gradient(180deg, rgba(77,226,212,.06), transparent); }
.cs-ava { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; background: linear-gradient(135deg, var(--cyan), #4de2d4); flex: 0 0 auto; box-shadow: 0 0 14px rgba(77,226,212,.3); }
.cs-ava svg { width: 21px; height: 21px; display: block; }
.cs-who { display: flex; flex-direction: column; line-height: 1.25; flex: 1; min-width: 0; }
.cs-who b { color: #eef4f3; font-size: 14px; }
.cs-who em { color: #6fe2da; font-style: normal; font-size: 10px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; display: flex; align-items: center; gap: 5px; }
.cs-who em::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #3ba55c; box-shadow: 0 0 0 3px rgba(59,165,92,.22); }
.cs-min { width: 30px; height: 30px; border: 0; border-radius: 8px; background: transparent; color: #8b979f; font-size: 13px; cursor: pointer; transition: color .2s ease, background .2s ease; }
.cs-min:hover { color: #eaf6f4; background: rgba(255,255,255,.06); }
.cs-thread { flex: 1; min-height: 0; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 8px; scrollbar-width: thin; scrollbar-color: rgba(111,226,218,.25) transparent; }
.cs-thread::-webkit-scrollbar { width: 6px; }
.cs-thread::-webkit-scrollbar-thumb { background: rgba(111,226,218,.22); border-radius: 3px; }
.cs-bub { max-width: 84%; padding: 8px 11px; border-radius: 13px; font-size: 13px; line-height: 1.55; white-space: pre-wrap; word-break: break-word; }
.cs-bub.them { align-self: flex-start; border: 1px solid rgba(111,226,218,.22); border-bottom-left-radius: 4px; background: rgba(77,226,212,.07); color: #d7eae6; }
.cs-bub.me { align-self: flex-end; border-bottom-right-radius: 4px; background: linear-gradient(135deg, var(--cyan), #3fb9c9); color: #06100f; }
.cs-sys { align-self: center; padding: 3px 10px; border-radius: 20px; background: rgba(255,255,255,.05); color: #7a8790; font-size: 10px; }
.cs-form { display: flex; gap: 8px; padding: 10px 12px; border-top: 1px solid rgba(255,255,255,.06); }
.cs-form textarea { flex: 1; max-height: 92px; padding: 9px 11px; border: 1px solid rgba(111,226,218,.2); border-radius: 11px; background: rgba(255,255,255,.04); color: #eef4f3; font: inherit; font-size: 13px; resize: none; outline: none; }
.cs-form textarea::placeholder { color: #6b7a80; }
.cs-form textarea:focus { border-color: rgba(111,226,218,.5); }
.cs-send { display: grid; place-items: center; width: 38px; height: 38px; flex: 0 0 auto; align-self: flex-end; border: 0; border-radius: 11px; background: linear-gradient(135deg, var(--cyan), #3fb9c9); color: #06100f; cursor: pointer; }
.cs-send svg { width: 17px; height: 17px; }
.cs-send:disabled { opacity: .45; cursor: default; }
.cs-foot { padding: 8px 12px; border-top: 1px solid rgba(255,255,255,.05); color: #4d5a63; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 8px; letter-spacing: .12em; text-align: center; }
@media (max-width: 520px) {
  .cs { right: 16px; bottom: 16px; }
  .cs-panel { position: fixed; inset: 0; width: 100%; height: 100dvh; max-height: none; border: 0; border-radius: 0; }
}
@media (prefers-reduced-motion: reduce) { .cs-panel { animation: none; } .cs-bubble-pulse { animation: none; } .cs-bubble { transition: none; } }