:root {
  --bg: #090a09;
  --panel: #111310;
  --panel-2: #171a15;
  --line: #292d26;
  --line-soft: #1c1f1a;
  --text: #f4f6f0;
  --muted: #92998d;
  --quiet: #656b62;
  --acid: #c8ff2e;
  --acid-soft: rgba(200, 255, 46, .12);
  --sans: Inter, "Segoe UI Variable", "Noto Sans SC", "Microsoft YaHei UI", system-ui, sans-serif;
  --mono: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body { margin: 0; overflow-x: hidden; background: var(--bg); color: var(--text); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
body::before { content: ""; position: fixed; z-index: -2; inset: 0; background-image: linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px); background-size: 64px 64px; mask-image: linear-gradient(to bottom, #000 0, transparent 72%); }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, summary { font: inherit; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 100; left: 12px; top: 12px; padding: 10px 14px; transform: translateY(-160%); border-radius: 6px; background: var(--acid); color: #10120d; font-weight: 700; }
.skip-link:focus { transform: none; }
.section-shell, .nav-shell, .footer-shell { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }

.site-header { position: sticky; z-index: 30; top: 0; border-bottom: 1px solid rgba(255,255,255,.055); background: rgba(9,10,9,.82); backdrop-filter: blur(18px); }
.nav-shell { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-size: 13px; font-weight: 850; letter-spacing: .18em; }
.brand img { width: 38px; height: 38px; object-fit: contain; }
.nav-links { display: flex; align-items: center; gap: 30px; color: var(--muted); font-size: 13px; }
.nav-links a, .footer-links a, .text-link, .support-link { transition: color .18s ease; }
.nav-links a:hover, .footer-links a:hover, .text-link:hover, .support-link:hover { color: var(--acid); }
.nav-actions { display: flex; align-items: center; gap: 9px; }
.language-menu { position: relative; }
.language-menu summary { width: 38px; height: 38px; display: grid; place-items: center; list-style: none; border: 1px solid var(--line); border-radius: 7px; background: var(--panel); color: #c8cdc4; cursor: pointer; }
.language-menu summary::-webkit-details-marker { display: none; }
.language-menu[open] summary { border-color: #596050; color: var(--acid); }
.language-menu > div { position: absolute; right: 0; top: calc(100% + 9px); min-width: 148px; padding: 7px; display: grid; border: 1px solid var(--line); border-radius: 9px; background: #121411; box-shadow: 0 22px 60px rgba(0,0,0,.48); }
.language-menu a { padding: 9px 10px; border-radius: 5px; color: var(--muted); font-size: 12px; }
.language-menu a:hover, .language-menu a[aria-current="page"] { background: var(--acid-soft); color: var(--text); }

.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 12px; padding: 0 20px; border: 1px solid var(--acid); border-radius: 7px; background: var(--acid); color: #10120d; font-size: 13px; font-weight: 780; box-shadow: 0 12px 40px rgba(200,255,46,.08); transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
.button:hover { transform: translateY(-2px); background: #d2ff55; box-shadow: 0 15px 50px rgba(200,255,46,.16); }
.button-secondary { border-color: #3a4035; background: #191c17; color: #d9ddd4; box-shadow: none; cursor: pointer; }
.button-secondary:hover { border-color: #596050; background: #20241e; color: #fff; box-shadow: none; }
.button:focus-visible, a:focus-visible, summary:focus-visible { outline: 2px solid var(--acid); outline-offset: 3px; }
.button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.button-small { min-height: 38px; padding: 0 14px; font-size: 12px; }

.hero { min-height: 710px; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(340px, .85fr); align-items: center; gap: 70px; padding-block: 92px 74px; }
.hero-copy { position: relative; z-index: 2; }
.eyebrow { margin: 0 0 24px; display: flex; align-items: center; gap: 10px; color: #9ba393; font: 650 10px/1.4 var(--mono); letter-spacing: .16em; text-transform: uppercase; }
.eyebrow span { width: 22px; height: 1px; background: var(--acid); box-shadow: 0 0 12px rgba(200,255,46,.45); }
h1, h2, h3, p { text-wrap: pretty; }
h1 { margin: 0; font-size: clamp(58px, 7.2vw, 106px); line-height: .92; letter-spacing: -.064em; font-weight: 780; }
h1 em { color: var(--acid); font-style: normal; }
.hero-lead { max-width: 620px; margin: 32px 0 0; color: #abb1a8; font-size: clamp(16px, 1.5vw, 20px); line-height: 1.7; }
.hero-actions { margin-top: 36px; display: flex; align-items: center; gap: 24px; }
.text-link, .support-link { color: #b1b7ad; font-size: 13px; }
.text-link span { margin-left: 8px; color: var(--acid); }
.availability { margin: 22px 0 0; display: flex; align-items: center; gap: 8px; color: var(--quiet); font: 11px var(--mono); }
.availability i { width: 6px; height: 6px; border-radius: 50%; background: var(--acid); box-shadow: 0 0 0 4px var(--acid-soft); }
.hero-mark { position: relative; height: 500px; display: grid; place-items: center; }
.hero-mark::before { content: ""; position: absolute; width: 430px; height: 430px; border: 1px solid rgba(200,255,46,.14); border-radius: 50%; background: radial-gradient(circle, rgba(200,255,46,.11), transparent 63%); }
.hero-mark::after { content: ""; position: absolute; width: 340px; height: 340px; border: 1px dashed rgba(255,255,255,.11); border-radius: 50%; animation: rotate 24s linear infinite; }
.hero-mark img { position: relative; z-index: 2; width: 280px; filter: drop-shadow(0 28px 55px rgba(0,0,0,.5)) drop-shadow(0 0 24px rgba(200,255,46,.08)); transform: rotate(-3deg); }
.hero-mark span, .hero-mark b { position: absolute; z-index: 3; color: #777e72; font: 9px var(--mono); letter-spacing: .25em; }
.hero-mark span { top: 46px; right: 35px; }
.hero-mark b { bottom: 44px; left: 24px; font-weight: 500; }
@keyframes rotate { to { transform: rotate(360deg); } }

.proof-strip { min-height: 76px; display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line-soft); background: #0d0f0d; }
.proof-strip p { margin: 0; display: flex; align-items: center; justify-content: center; gap: 10px; border-right: 1px solid var(--line-soft); color: #9da49a; font-size: 12px; }
.proof-strip p:last-child { border-right: 0; }
.proof-strip span { color: var(--acid); font: 12px var(--mono); }

.demo, .features, .faq { padding-block: 126px; }
.section-heading { margin-bottom: 54px; display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(260px, .65fr); align-items: end; gap: 70px; }
.section-heading .eyebrow { margin-bottom: 18px; }
.section-heading h2, .local-copy h2, .final-cta h2 { max-width: 820px; margin: 0; font-size: clamp(38px, 4.6vw, 68px); line-height: 1.02; letter-spacing: -.045em; }
.section-heading > p { margin: 0 0 4px; color: var(--muted); font-size: 14px; line-height: 1.7; }

.video-frame { position: relative; aspect-ratio: 16 / 9; overflow: hidden; border: 1px solid #343a30; border-radius: 12px; background: #0b0c0b; box-shadow: 0 38px 100px rgba(0,0,0,.42); }
.video-frame::before { content: ""; position: absolute; inset: 42px 0 118px; background-image: linear-gradient(rgba(255,255,255,.026) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.026) 1px, transparent 1px); background-size: 50px 50px; }
.video-toolbar { height: 42px; display: flex; align-items: center; gap: 7px; padding: 0 15px; border-bottom: 1px solid var(--line-soft); background: #111310; }
.video-toolbar span { width: 7px; height: 7px; border-radius: 50%; background: #33372f; }
.video-toolbar span:first-child { background: var(--acid); }
.video-toolbar b { margin-left: auto; color: #5f655c; font: 8px var(--mono); letter-spacing: .14em; }
.video-canvas { position: absolute; inset: 42px 0 118px; display: grid; align-content: center; justify-items: center; background: radial-gradient(circle at 50% 42%, rgba(200,255,46,.065), transparent 35%); text-align: center; }
.play-symbol { width: 68px; height: 68px; display: grid; place-items: center; margin-bottom: 25px; border: 1px solid rgba(200,255,46,.32); border-radius: 50%; background: var(--acid-soft); box-shadow: 0 0 42px rgba(200,255,46,.08); }
.play-symbol i { width: 0; height: 0; margin-left: 5px; border-top: 9px solid transparent; border-bottom: 9px solid transparent; border-left: 14px solid var(--acid); }
.video-canvas p { margin: 0 0 8px; color: var(--acid); font: 9px var(--mono); letter-spacing: .24em; }
.video-canvas strong { font-size: clamp(21px, 2.8vw, 38px); letter-spacing: -.03em; }
.video-canvas small { margin-top: 10px; color: #646b60; font: 9px var(--mono); }
.video-timeline { position: absolute; inset: auto 0 0; height: 118px; padding: 17px 20px; border-top: 1px solid var(--line-soft); background: #0f110e; }
.timeline-time { margin-bottom: 12px; color: #afb5aa; font: 9px var(--mono); }
.timeline-track { position: relative; height: 43px; display: flex; gap: 3px; overflow: hidden; border: 1px solid #2c302a; border-radius: 3px; background: #151814; }
.timeline-track i { display: block; width: 20%; background: linear-gradient(135deg, rgba(200,255,46,.28), rgba(200,255,46,.08)); border-right: 1px solid rgba(200,255,46,.3); }
.timeline-track i:nth-child(2) { width: 29%; }
.timeline-track i:nth-child(3) { width: 13%; }
.timeline-track i:nth-child(4) { flex: 1; }
.timeline-track span { position: absolute; z-index: 2; left: 18%; top: -4px; bottom: -4px; width: 1px; background: var(--acid); box-shadow: 0 0 11px var(--acid); animation: playhead 4.2s ease-in-out infinite alternate; }
@keyframes playhead { to { left: 82%; } }

.feature-heading { grid-template-columns: 1fr; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.feature-card { min-height: 235px; padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: linear-gradient(145deg, rgba(255,255,255,.018), transparent 60%); transition: background .2s ease; }
.feature-card:hover { background: linear-gradient(145deg, rgba(200,255,46,.055), transparent 65%); }
.feature-card > span { color: var(--acid); font: 10px var(--mono); }
.feature-card h3 { margin: 56px 0 16px; font-size: 24px; letter-spacing: -.025em; }
.feature-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.75; }

.local-section { min-height: 650px; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 90px; padding-block: 70px 126px; }
.local-visual { min-height: 480px; display: grid; place-items: center; border: 1px solid var(--line-soft); background: radial-gradient(circle, rgba(200,255,46,.06), transparent 58%); }
.local-orbit { position: relative; width: 300px; height: 300px; display: grid; place-items: center; border: 1px dashed #363b32; border-radius: 50%; }
.local-orbit::before, .local-orbit::after { content: ""; position: absolute; border: 1px solid rgba(255,255,255,.055); border-radius: 50%; }
.local-orbit::before { inset: 35px; }
.local-orbit::after { inset: 70px; }
.local-orbit img { width: 126px; position: relative; z-index: 2; }
.local-orbit span { position: absolute; top: -5px; width: 9px; height: 9px; border-radius: 50%; background: var(--acid); box-shadow: 0 0 16px var(--acid); animation: orbit 8s linear infinite; transform-origin: 5px 155px; }
@keyframes orbit { to { transform: rotate(360deg); } }
.local-copy .eyebrow { margin-bottom: 22px; }
.local-copy > p:not(.eyebrow) { margin: 26px 0; color: var(--muted); font-size: 15px; line-height: 1.8; }
.local-copy ul { margin: 0; padding: 0; display: grid; gap: 13px; list-style: none; }
.local-copy li { display: flex; gap: 10px; color: #bcc1b9; font-size: 13px; }
.local-copy li span { color: var(--acid); }

.faq { border-top: 1px solid var(--line-soft); }
.faq-list { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { position: relative; padding: 25px 54px 25px 0; list-style: none; color: #dfe3da; font-size: 17px; font-weight: 650; cursor: pointer; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; color: var(--acid); font: 20px var(--mono); }
.faq details[open] summary::after { content: "−"; }
.faq details p { max-width: 760px; margin: -5px 0 26px; color: var(--muted); font-size: 14px; line-height: 1.8; }

.final-cta { position: relative; margin-bottom: 110px; padding-block: 90px; overflow: hidden; border: 1px solid #3b4234; background: linear-gradient(120deg, rgba(200,255,46,.09), rgba(200,255,46,.015)); text-align: center; }
.final-cta::before { content: ""; position: absolute; width: 480px; height: 480px; left: 50%; top: 50%; transform: translate(-50%,-50%); border: 1px dashed rgba(200,255,46,.11); border-radius: 50%; }
.final-cta > * { position: relative; z-index: 2; }
.final-cta .eyebrow { justify-content: center; }
.final-cta h2 { margin-inline: auto; }
.final-cta > p:not(.eyebrow) { margin: 22px auto 30px; color: var(--muted); }
.final-cta > div { display: flex; align-items: center; justify-content: center; gap: 24px; }

.dialog-open { overflow: hidden; }
.sponsor-dialog { width: min(560px, calc(100% - 30px)); max-width: none; padding: 0; overflow: visible; border: 0; border-radius: 13px; background: transparent; color: var(--text); }
.sponsor-dialog::backdrop { background: rgba(4,5,4,.82); backdrop-filter: blur(10px); }
.sponsor-card { position: relative; padding: 40px; overflow: hidden; border: 1px solid #40473a; border-radius: 13px; background: #111310; box-shadow: 0 30px 100px rgba(0,0,0,.66); }
.sponsor-card::before { content: ""; position: absolute; width: 330px; height: 330px; right: -150px; top: -180px; border: 1px solid rgba(200,255,46,.13); border-radius: 50%; background: radial-gradient(circle, rgba(200,255,46,.08), transparent 68%); }
.sponsor-card > * { position: relative; z-index: 1; }
.sponsor-card .eyebrow { margin-bottom: 19px; }
.sponsor-card h2 { max-width: 470px; margin: 0; font-size: clamp(30px, 5vw, 44px); line-height: 1.08; letter-spacing: -.04em; }
.sponsor-card > p:not(.eyebrow) { margin: 20px 0 0; color: var(--muted); font-size: 14px; line-height: 1.75; }
.dialog-close { position: absolute; z-index: 4; top: 15px; right: 15px; width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; background: #181b16; color: #8d9488; font-size: 20px; cursor: pointer; }
.dialog-close:hover { color: #fff; border-color: #555d4f; }
.sponsor-actions { margin-top: 30px; display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.sponsor-actions .button { min-height: 50px; padding-inline: 14px; text-align: center; }
.sponsor-card small { display: block; margin-top: 17px; color: #656c61; font: 10px/1.5 var(--mono); text-align: center; }
.download-toast { position: fixed; z-index: 70; left: 50%; bottom: 25px; max-width: calc(100% - 30px); padding: 11px 15px; transform: translate(-50%, 18px); border-radius: 7px; background: #edf2e8; color: #151814; font-size: 12px; font-weight: 700; box-shadow: 0 14px 50px rgba(0,0,0,.45); opacity: 0; pointer-events: none; transition: opacity .18s ease, transform .18s ease; }
.download-toast.visible { transform: translate(-50%, 0); opacity: 1; }

footer { border-top: 1px solid var(--line-soft); background: #070807; }
.footer-shell { min-height: 190px; display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 70px; }
.footer-shell > div:first-child p { margin: 12px 0 0; color: var(--quiet); font-size: 12px; }
.footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 28px; color: var(--muted); font-size: 12px; }
.release-meta { display: grid; justify-items: end; gap: 8px; color: var(--quiet); font: 10px var(--mono); }
.release-meta code { color: #8e9588; }
.copyright { padding: 15px 24px; border-top: 1px solid var(--line-soft); color: #4e534c; font: 9px var(--mono); text-align: center; }

.legal-page { min-height: calc(100vh - 70px); padding-block: 100px; }
.legal-page h1 { font-size: clamp(48px, 7vw, 84px); }
.legal-updated { color: var(--quiet); font: 10px var(--mono); }
.legal-page section, .legal-page > hr, .legal-page > h2, .legal-page > p[lang] { max-width: 780px; }
.legal-page section { margin-top: 48px; }
.legal-page h2 { font-size: 22px; }
.legal-page section p, .legal-page > p[lang] { color: var(--muted); font-size: 14px; line-height: 1.9; }
.legal-page section a { color: var(--acid); text-decoration: underline; text-underline-offset: 3px; }
.legal-page hr { margin: 60px 0; border: 0; border-top: 1px solid var(--line); }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 20px; padding-block: 80px 50px; }
  .hero-mark { height: 380px; }
  .hero-mark img { width: 220px; }
  .hero-mark::before { width: 340px; height: 340px; }
  .hero-mark::after { width: 270px; height: 270px; }
  .proof-strip { grid-template-columns: 1fr; }
  .proof-strip p { min-height: 58px; border-right: 0; border-bottom: 1px solid var(--line-soft); }
  .proof-strip p:last-child { border-bottom: 0; }
  .section-heading { grid-template-columns: 1fr; gap: 20px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 250px; }
  .feature-card h3 { margin-top: 58px; }
  .local-section { grid-template-columns: 1fr; gap: 50px; }
  .local-visual { min-height: 420px; }
  .footer-shell { grid-template-columns: 1fr 1fr; padding-block: 46px; }
  .release-meta { grid-column: 1 / -1; justify-items: start; }
}

@media (max-width: 600px) {
  .section-shell, .nav-shell, .footer-shell { width: min(100% - 30px, 1180px); }
  .nav-shell { min-height: 62px; }
  .brand { font-size: 11px; }
  .brand img { width: 32px; height: 32px; }
  .button-small { display: none; }
  .hero { padding-top: 72px; }
  h1 { font-size: clamp(48px, 15vw, 72px); }
  .hero-lead { font-size: 15px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 18px; }
  .hero-mark { height: 300px; }
  .hero-mark img { width: 174px; }
  .hero-mark::before { width: 270px; height: 270px; }
  .hero-mark::after { width: 210px; height: 210px; }
  .demo, .features, .faq { padding-block: 88px; }
  .section-heading { margin-bottom: 36px; }
  .section-heading h2, .local-copy h2, .final-cta h2 { font-size: 39px; }
  .video-frame { aspect-ratio: 4 / 3; }
  .video-frame::before, .video-canvas { bottom: 92px; }
  .video-timeline { height: 92px; padding: 13px; }
  .timeline-track { height: 34px; }
  .play-symbol { width: 56px; height: 56px; margin-bottom: 18px; }
  .video-canvas strong { font-size: 20px; }
  .feature-card { padding: 24px; }
  .local-section { padding-block: 20px 88px; }
  .local-visual { min-height: 330px; }
  .local-orbit { width: 230px; height: 230px; }
  .local-orbit span { transform-origin: 5px 120px; }
  .final-cta { width: calc(100% - 30px); margin-bottom: 70px; padding: 64px 22px; }
  .final-cta::before { width: 280px; height: 280px; }
  .final-cta > div { flex-direction: column; }
  .sponsor-card { padding: 34px 22px 26px; }
  .sponsor-actions { grid-template-columns: 1fr; }
  .footer-shell { grid-template-columns: 1fr; gap: 36px; }
  .footer-links { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}