:root {
  color-scheme: dark light;
  --navy-950: #050b14;
  --navy-900: #07111f;
  --navy-850: #0a1728;
  --navy-800: #0d1d31;
  --slate-700: #334155;
  --slate-500: #64748b;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --paper: #f7f9fc;
  --white: #ffffff;
  --cyan: #21c4f6;
  --cyan-bright: #67dcff;
  --cyan-dark: #03698b;
  --green: #4ade80;
  --orange: #fb923c;
  --shell: min(1180px, calc(100vw - 48px));
  --shadow: 0 28px 70px rgba(2, 12, 27, 0.16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
  color: #132035;
  font-family: "Segoe UI Variable", "Segoe UI", Inter, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.shell { width: var(--shell); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 100; top: 8px; left: 8px; padding: 10px 14px; background: white; color: #07111f; transform: translateY(-150%); border-radius: 6px; }
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: absolute;
  z-index: 20;
  width: 100%;
  border-bottom: 1px solid rgba(255,255,255,.09);
  color: white;
}
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-weight: 720; letter-spacing: -.02em; }
.brand-mark { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px; background: linear-gradient(145deg, var(--cyan-bright), #0ea5e9); color: #06121f; font-size: 20px; font-weight: 850; box-shadow: 0 8px 24px rgba(33,196,246,.22); }
.alpha-pill { padding: 2px 7px; border: 1px solid rgba(103,220,255,.34); border-radius: 999px; color: var(--cyan-bright); font-size: 12px; font-weight: 650; text-transform: uppercase; letter-spacing: .08em; }
.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav a { color: #b9c6d8; text-decoration: none; font-size: 14px; font-weight: 550; transition: color .2s ease; }
.site-nav a:hover, .site-nav a:focus-visible { color: white; }
.site-nav .nav-download { padding: 9px 15px; border: 1px solid rgba(103,220,255,.42); border-radius: 7px; color: var(--cyan-bright); }
.nav-toggle { display: none; width: 42px; height: 42px; border: 0; border-radius: 8px; background: rgba(255,255,255,.08); }
.nav-toggle span:not(.sr-only) { display: block; width: 20px; height: 2px; margin: 5px auto; background: white; }

.hero {
  position: relative;
  overflow: hidden;
  padding: 164px 0 104px;
  color: white;
  background:
    radial-gradient(circle at 78% 35%, rgba(18,158,205,.20), transparent 30%),
    linear-gradient(120deg, var(--navy-950), var(--navy-900) 55%, #092139);
}
.hero::before { content: ""; position: absolute; inset: 0; opacity: .25; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(to right, transparent, black); }
.hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(400px, .92fr); align-items: center; gap: 72px; }
.eyebrow, .section-kicker { margin: 0 0 14px; color: var(--cyan-dark); font-size: 13px; line-height: 1.3; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
.eyebrow { display: flex; align-items: center; gap: 9px; color: var(--cyan-bright); }
.eyebrow span { width: 22px; height: 2px; background: var(--cyan); }
h1, h2, h3, p { text-wrap: pretty; }
h1 { max-width: 720px; margin: 0; font-size: clamp(3.45rem, 6.2vw, 6.3rem); line-height: .96; letter-spacing: -.062em; font-weight: 760; }
h1 em { color: var(--cyan-bright); font-style: normal; font-weight: 480; }
.hero-lede { max-width: 650px; margin: 28px 0 30px; color: #b9c6d8; font-size: clamp(1.06rem, 1.8vw, 1.25rem); line-height: 1.62; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; gap: 26px; padding: 0 20px; border: 1px solid transparent; border-radius: 8px; text-decoration: none; font-weight: 690; transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
.button:hover { transform: translateY(-2px); }
.button:focus-visible, button:focus-visible, a:focus-visible { outline: 3px solid rgba(103,220,255,.58); outline-offset: 3px; }
.button-primary { background: var(--cyan); color: #04111d; box-shadow: 0 13px 30px rgba(33,196,246,.2); }
.button-primary:hover { background: var(--cyan-bright); box-shadow: 0 16px 38px rgba(33,196,246,.28); }
.button-quiet { border-color: rgba(255,255,255,.14); color: #e7eef8; background: rgba(255,255,255,.04); }
.download-meta { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 20px; color: #7f91a9; font-size: 13px; }
.download-meta span { position: relative; }
.download-meta span + span::before { content: ""; position: absolute; width: 3px; height: 3px; left: -12px; top: 9px; border-radius: 50%; background: #52657e; }

.hero-console { position: relative; padding: 18px; border: 1px solid rgba(111,210,243,.2); border-radius: 16px; background: rgba(5,14,25,.78); box-shadow: 0 35px 80px rgba(0,0,0,.34), inset 0 1px rgba(255,255,255,.04); backdrop-filter: blur(14px); }
.hero-console::after { content: ""; position: absolute; z-index: -1; inset: 22px -25px -25px 25px; border: 1px solid rgba(103,220,255,.08); border-radius: 16px; }
.console-topline, .console-foot { display: flex; justify-content: space-between; align-items: center; color: #8fa1b7; font-size: 13px; }
.console-topline { padding: 2px 3px 16px; border-bottom: 1px solid rgba(255,255,255,.08); }
.status-dot { display: inline-block; width: 8px; height: 8px; margin-right: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(74,222,128,.08); }
.console-version { font-family: Consolas, monospace; }
.pipeline { margin: 0; padding: 12px 0; list-style: none; }
.pipeline-step { display: grid; grid-template-columns: 38px 1fr auto; align-items: center; gap: 12px; padding: 15px 10px; border-bottom: 1px solid rgba(255,255,255,.07); }
.step-index { color: #53677e; font: 12px Consolas, monospace; }
.pipeline-step strong { display: block; font-size: 15px; }
.pipeline-step small { display: block; margin-top: 1px; color: #73869e; font-size: 13px; }
.step-state { padding: 3px 8px; border-radius: 4px; background: rgba(255,255,255,.05); color: #74879d; font-size: 11px; }
.pipeline-step.complete .step-state { color: #84e4a7; background: rgba(74,222,128,.08); }
.pipeline-step.active { border-left: 2px solid var(--cyan); background: linear-gradient(90deg, rgba(33,196,246,.08), transparent); }
.pipeline-step.active .step-state { color: var(--cyan-bright); background: rgba(33,196,246,.09); }
.console-progress { height: 4px; margin: 16px 3px 10px; overflow: hidden; border-radius: 4px; background: #18283b; }
.console-progress span { display: block; width: 64%; height: 100%; background: linear-gradient(90deg, #0ea5e9, var(--cyan-bright)); }
.console-foot { padding: 0 3px 2px; }

.trust-strip { color: white; background: #0a1728; border-top: 1px solid rgba(255,255,255,.05); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-grid > div { padding: 22px 24px; border-right: 1px solid rgba(255,255,255,.07); }
.trust-grid > div:first-child { border-left: 1px solid rgba(255,255,255,.07); }
.trust-grid strong, .trust-grid span { display: block; }
.trust-grid strong { font-size: 14px; }
.trust-grid span { margin-top: 2px; color: #70849c; font-size: 12px; }

.section { padding: 112px 0; }
.section-light { background: var(--paper); }
.section-dark { color: white; background: var(--navy-900); }
.section-heading { max-width: 760px; margin-bottom: 46px; }
.section-heading h2, .requirements-grid h2, .download-panel h2 { margin: 0; font-size: clamp(2.25rem, 4vw, 4.1rem); line-height: 1.04; letter-spacing: -.05em; }
.section-heading > p:last-child { max-width: 650px; margin: 17px 0 0; color: var(--slate-500); font-size: 18px; }
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.feature-card { position: relative; min-height: 280px; padding: 30px; overflow: hidden; border: 1px solid var(--slate-200); border-radius: 14px; background: white; box-shadow: 0 10px 34px rgba(15,23,42,.04); }
.feature-wide { grid-column: 1 / -1; min-height: 300px; padding-right: 38%; }
.feature-number { color: #94a3b8; font: 13px Consolas, monospace; }
.feature-card h3 { margin: 56px 0 10px; font-size: 25px; letter-spacing: -.025em; }
.feature-card p { max-width: 610px; margin: 0; color: var(--slate-500); font-size: 17px; }
.feature-accent { color: white; background: #0c1b2e; border-color: #142b45; }
.feature-accent p { color: #a6b5c8; }
.feature-accent .feature-number { color: var(--cyan-bright); }
.volume-row { position: absolute; right: 28px; bottom: 28px; display: grid; width: 32%; gap: 6px; }
.volume-row span { padding: 10px 12px; border-radius: 5px; color: #334155; background: #edf5fb; font: 12px Consolas, monospace; }
.volume-row span:nth-child(2) { color: #075985; background: #dff5fd; }

.recovery-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 24px 74px; align-items: start; }
.dark-heading p:last-child { color: #93a4b8; }
.recovery-steps { margin: 0; padding: 0; list-style: none; }
.recovery-steps li { display: grid; grid-template-columns: 44px 1fr; gap: 18px; padding: 20px 0; border-bottom: 1px solid rgba(255,255,255,.09); }
.recovery-steps li > span { display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid rgba(103,220,255,.3); border-radius: 50%; color: var(--cyan-bright); font-size: 14px; }
.recovery-steps h3 { margin: 0 0 5px; font-size: 19px; }
.recovery-steps p { margin: 0; color: #899bb1; }
.usb-map { grid-column: 1 / -1; display: flex; align-items: stretch; max-width: 930px; margin-top: 30px; filter: drop-shadow(0 25px 40px rgba(0,0,0,.25)); }
.usb-head { display: grid; align-items: center; width: 65px; padding: 8px; border-radius: 9px 0 0 9px; background: #b7c5d2; }
.usb-head span { height: 32px; border: 2px solid #7b8c9c; border-radius: 3px; }
.usb-body { display: grid; flex: 1; grid-template-columns: 28% 72%; min-height: 105px; border: 5px solid #c9d5df; border-radius: 0 14px 14px 0; overflow: hidden; color: #102033; background: #d4dee7; }
.usb-body > div { display: flex; flex-direction: column; justify-content: center; padding: 18px 24px; }
.usb-body strong, .usb-body span { display: block; }
.usb-body strong { font-size: 15px; }
.usb-body span { font: 12px Consolas, monospace; opacity: .7; }
.usb-boot { background: #66dafb; }
.usb-data { background: #f1f5f9; border-left: 4px solid #cbd5e1; }

.requirements-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 74px; align-items: center; }
.requirements-lede { max-width: 550px; color: var(--slate-500); font-size: 18px; }
.requirements-card { padding: 34px; border: 1px solid var(--slate-200); border-radius: 14px; background: white; box-shadow: var(--shadow); }
.requirements-card h3 { margin: 0 0 20px; font-size: 21px; }
.requirements-card ul { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.requirements-card li { display: flex; gap: 12px; align-items: center; color: #334155; }
.requirements-card li span { display: grid; place-items: center; flex: 0 0 25px; height: 25px; border-radius: 50%; color: #047857; background: #dcfce7; font-size: 13px; font-weight: bold; }
.warning { margin: 25px 0 0; padding: 15px; border-left: 3px solid var(--orange); color: #7c2d12; background: #fff7ed; font-size: 14px; }

.download-section { padding: 0 0 90px; background: var(--paper); }
.download-panel { display: grid; grid-template-columns: 1fr auto; gap: 70px; align-items: center; padding: 52px; border-radius: 18px; color: white; background: linear-gradient(115deg, #07111f, #0c2943); box-shadow: var(--shadow); }
.download-panel h2 { font-size: clamp(2rem, 3.7vw, 3.4rem); }
.download-panel p:last-child { margin: 13px 0 0; color: #98a9bc; }
.download-column { display: flex; min-width: 310px; flex-direction: column; align-items: stretch; }
.button-large { min-height: 58px; padding-inline: 24px; }
.checksum-toggle { margin: 10px auto 0; padding: 4px; border: 0; color: #91a4b9; background: transparent; cursor: pointer; font: inherit; font-size: 12px; text-decoration: underline; text-underline-offset: 3px; }
#checksum { display: block; max-width: 310px; margin-top: 9px; padding: 10px; overflow-wrap: anywhere; border-radius: 6px; color: #a8eafe; background: rgba(0,0,0,.24); font-size: 11px; line-height: 1.4; }
#checksum[hidden] { display: none; }

footer { padding: 34px 0; color: #94a3b8; background: #050b14; }
.footer-inner { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 35px; }
.footer-brand { color: white; }
.footer-brand .brand-mark { width: 29px; height: 29px; border-radius: 7px; font-size: 16px; }
.footer-inner p { margin: 0; font-size: 13px; }

@media (prefers-reduced-motion: no-preference) {
  .hero-copy, .hero-console { animation: rise .7s ease both; }
  .hero-console { animation-delay: .12s; }
  @keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: translateY(0); } }
}

@media (max-width: 900px) {
  :root { --shell: min(100% - 34px, 720px); }
  .site-header { position: absolute; }
  .nav-toggle { display: block; }
  .site-nav { position: absolute; top: 66px; left: 17px; right: 17px; display: none; padding: 16px; border: 1px solid rgba(255,255,255,.13); border-radius: 10px; background: #0a1728; box-shadow: 0 16px 36px rgba(0,0,0,.3); }
  .site-nav.open { display: grid; gap: 5px; }
  .site-nav a { padding: 9px 10px; }
  .hero { padding: 135px 0 78px; }
  .hero-grid, .recovery-layout, .requirements-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-console { max-width: 650px; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-grid > div:nth-child(3) { border-left: 1px solid rgba(255,255,255,.07); }
  .section { padding: 82px 0; }
  .download-panel { grid-template-columns: 1fr; gap: 30px; padding: 40px; }
  .download-column { min-width: 0; max-width: 400px; }
  .footer-inner { grid-template-columns: 1fr; gap: 10px; }
}

@media (max-width: 620px) {
  :root { --shell: calc(100% - 28px); }
  .header-inner { min-height: 68px; }
  .brand-mark { width: 32px; height: 32px; }
  h1 { font-size: clamp(3.1rem, 15.4vw, 4.6rem); }
  .hero-lede { font-size: 1.02rem; }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .download-meta { gap: 15px; }
  .download-meta span + span::before { display: none; }
  .hero-console { padding: 12px; }
  .pipeline-step { grid-template-columns: 30px 1fr; }
  .step-state { grid-column: 2; width: max-content; }
  .trust-grid, .feature-grid { grid-template-columns: 1fr; }
  .trust-grid > div, .trust-grid > div:first-child, .trust-grid > div:nth-child(3) { border: 0; border-bottom: 1px solid rgba(255,255,255,.07); }
  .section-heading { margin-bottom: 34px; }
  .feature-wide { grid-column: auto; min-height: 330px; padding-right: 28px; }
  .volume-row { position: static; width: 100%; margin-top: 25px; }
  .feature-card h3 { margin-top: 38px; }
  .usb-head { width: 42px; }
  .usb-body { grid-template-columns: 38% 62%; min-height: 130px; }
  .usb-body > div { padding: 13px; }
  .download-panel { padding: 31px 23px; border-radius: 12px; }
  .alpha-pill { display: none; }
}