:root {
  --paper: #f4f7f5;
  --paper-strong: #ffffff;
  --mist: #e7eeea;
  --ink: #13251d;
  --ink-soft: #52665c;
  --line: #cdd9d2;
  --green: #2e8b57;
  --green-bright: #42ce76;
  --green-pale: #d9f4e2;
  --blue: #3e5fc4;
  --amber: #d89b31;
  --danger: #d7655b;
  --shadow: 0 24px 70px rgba(19, 37, 29, 0.13);
  --radius: 22px;
  --display: "Avenir Next", Avenir, "Segoe UI", sans-serif;
  --body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: inherit; }
button, input, textarea { font: inherit; }

.shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; background: var(--ink); color: white; padding: 10px 14px; border-radius: 8px; }
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid rgba(19, 37, 29, 0.09);
  background: rgba(244, 247, 245, 0.88);
  backdrop-filter: blur(18px) saturate(140%);
}
.nav-shell { height: 72px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; width: fit-content; font-family: var(--display); font-weight: 700; text-decoration: none; letter-spacing: -0.02em; }
.brand img { border-radius: 10px; box-shadow: 0 5px 14px rgba(19,37,29,.18); }
nav { display: flex; gap: 28px; }
nav a, .footer-links a { color: var(--ink-soft); text-decoration: none; font-size: .9rem; font-weight: 600; }
nav a:hover, .footer-links a:hover { color: var(--ink); }
.nav-shell > .button { justify-self: end; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: transparent;
  font-weight: 750;
  text-decoration: none;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.button:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(19,37,29,.12); }
.button-small { min-height: 40px; padding-inline: 17px; font-size: .86rem; }
.button-primary { background: var(--ink); color: #fff; }
.button-primary:hover { background: #203a2e; }
.button:focus-visible, a:focus-visible, summary:focus-visible, textarea:focus-visible, input:focus-visible { outline: 3px solid rgba(62,95,196,.45); outline-offset: 3px; }

.hero { position: relative; overflow: hidden; padding: 90px 0 94px; }
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(19,37,29,.038) 1px, transparent 1px), linear-gradient(90deg, rgba(19,37,29,.038) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(to bottom, black, transparent 88%);
}
.hero-grid { position: relative; display: grid; grid-template-columns: .88fr 1.12fr; align-items: center; gap: clamp(52px, 8vw, 110px); }
.hero-copy { animation: rise .65s cubic-bezier(.2,.8,.2,1) both; }
.eyebrow { margin: 0 0 18px; color: var(--ink-soft); font-family: var(--mono); font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.status-dot { display: inline-block; width: 8px; height: 8px; margin-right: 9px; border-radius: 50%; background: var(--green-bright); box-shadow: 0 0 0 5px rgba(66,206,118,.13); }
h1, h2, h3 { font-family: var(--display); letter-spacing: -.045em; }
h1 { margin: 0; font-size: clamp(3.15rem, 6.2vw, 6.2rem); line-height: .94; font-weight: 700; }
h1 span { color: var(--green); }
.lede { max-width: 610px; margin: 28px 0 0; color: var(--ink-soft); font-size: clamp(1.06rem, 1.6vw, 1.25rem); line-height: 1.65; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 22px; margin-top: 34px; }
.text-link { color: var(--ink); font-weight: 750; text-decoration: none; border-bottom: 1px solid var(--line); }
.text-link:hover { border-color: var(--green); color: var(--green); }
.truth-list { display: flex; flex-wrap: wrap; gap: 9px 22px; margin: 32px 0 0; padding: 0; list-style: none; color: var(--ink-soft); font-size: .86rem; }
.truth-list li::before { content: "✓"; margin-right: 7px; color: var(--green); font-weight: 800; }

.demo-wrap { animation: rise .65s .12s cubic-bezier(.2,.8,.2,1) both; }
.demo-window { overflow: hidden; border: 1px solid rgba(19,37,29,.17); border-radius: 24px; background: var(--paper-strong); box-shadow: var(--shadow); }
.window-bar { position: relative; display: flex; align-items: center; gap: 7px; height: 46px; padding: 0 17px; border-bottom: 1px solid var(--line); background: #ecf1ee; }
.traffic { width: 11px; height: 11px; border-radius: 50%; }
.traffic.red { background: #f37468; } .traffic.yellow { background: #e9b84d; } .traffic.green { background: #53bb6d; }
.window-title { position: absolute; left: 50%; transform: translateX(-50%); color: var(--ink-soft); font-size: .75rem; font-weight: 700; }
.demo-body { padding: 26px; }
.demo-status { display: flex; align-items: center; gap: 12px; margin-bottom: 23px; }
.demo-status strong, .demo-status span { display: block; }
.demo-status strong { font-size: .92rem; }
.demo-status > div > span { color: var(--ink-soft); font-size: .78rem; }
.guard-indicator { width: 13px; height: 13px; border-radius: 50%; background: #a9b6af; box-shadow: 0 0 0 7px rgba(169,182,175,.14); transition: .18s ease; }
.demo-window[data-demo-state="guarding"] .guard-indicator { background: var(--green-bright); box-shadow: 0 0 0 8px rgba(66,206,118,.16); }
.demo-window[data-demo-state="blocked"] .guard-indicator { background: var(--amber); box-shadow: 0 0 0 8px rgba(216,155,49,.17); }
.demo-body > label { display: block; margin-bottom: 8px; color: var(--ink-soft); font-family: var(--mono); font-size: .68rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
#demo-editor { width: 100%; min-height: 116px; resize: vertical; border: 1px solid var(--line); border-radius: 14px; background: #f8faf9; color: var(--ink); padding: 16px; font-size: 1rem; line-height: 1.55; caret-color: var(--green); }
#demo-editor:focus { border-color: var(--green); background: #fff; }
.trackpad-row { display: grid; grid-template-columns: 1fr 122px; align-items: center; gap: 22px; margin-top: 22px; }
.trackpad-label, .trackpad-hint { display: block; }
.trackpad-label { font-weight: 750; }
.trackpad-hint { max-width: 300px; margin-top: 4px; color: var(--ink-soft); font-size: .78rem; line-height: 1.45; }
.trackpad { position: relative; overflow: hidden; aspect-ratio: 1.65; border: 1px solid #aab8b0; border-radius: 11px; background: linear-gradient(145deg, #edf1ef, #d6ded9); color: var(--ink-soft); cursor: pointer; font-size: .78rem; box-shadow: inset 0 1px #fff, 0 5px 12px rgba(19,37,29,.09); }
.trackpad:active { transform: translateY(1px); }
.tap-ring { position: absolute; left: 50%; top: 50%; width: 12px; height: 12px; border: 2px solid var(--blue); border-radius: 50%; opacity: 0; transform: translate(-50%,-50%) scale(.3); }
.trackpad.was-tapped .tap-ring { animation: tap .5s ease-out; }
.trackpad.was-blocked { border-color: var(--amber); background: #fff7e5; color: #8a5c0d; }
.delay-control { margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line); }
.delay-label { display: flex; justify-content: space-between; font-size: .78rem; font-weight: 700; }
.delay-control output { color: var(--green); font-family: var(--mono); }
.delay-control input { width: 100%; accent-color: var(--green); }
.range-labels { display: flex; justify-content: space-between; color: var(--ink-soft); font-size: .65rem; }
.demo-caption { margin: 14px 8px 0; color: var(--ink-soft); font-size: .75rem; text-align: center; }

.quiet-strip { border-block: 1px solid var(--line); background: #eaf0ec; }
.principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.principle-grid > div { position: relative; padding: 28px 32px 30px 48px; }
.principle-grid > div + div { border-left: 1px solid var(--line); }
.principle-grid span { position: absolute; left: 0; top: 31px; color: var(--green); font-family: var(--mono); font-size: .72rem; }
.principle-grid strong { display: block; font-family: var(--display); font-size: 1.05rem; }
.principle-grid p { margin: 5px 0 0; color: var(--ink-soft); font-size: .86rem; }

.section { padding: 112px 0; }
.section-heading { max-width: 800px; }
.section h2 { margin: 0; font-size: clamp(2.4rem, 4.8vw, 4.7rem); line-height: 1.03; }
.section-heading > p:last-child { max-width: 720px; margin: 24px 0 0; color: var(--ink-soft); font-size: 1.08rem; }
.signal-flow { display: grid; grid-template-columns: repeat(3, 1fr); align-items: stretch; margin: 66px 0 0; padding: 0; list-style: none; }
.signal-flow li { position: relative; padding: 28px 24px 30px; border-top: 1px solid var(--ink); }
.signal-flow li + li::before { content: "→"; position: absolute; left: -9px; top: 50%; color: var(--line); font-size: 1.5rem; transform: translateY(-50%); }
.signal-icon { display: grid; place-items: center; width: 44px; height: 44px; margin-bottom: 42px; border: 1px solid var(--line); border-radius: 11px; background: #fff; font-family: var(--mono); font-weight: 800; box-shadow: 0 6px 14px rgba(19,37,29,.07); }
.guard-icon { color: var(--green); }.cursor-icon { color: var(--blue); }.key-icon { color: var(--ink); }
.step-label { margin: 0 0 8px; color: var(--green); font-family: var(--mono); font-size: .68rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.signal-flow h3 { margin: 0; font-size: 1.35rem; }
.signal-flow li p:last-child { margin: 12px 0 0; color: var(--ink-soft); font-size: .9rem; }

.panel-section { background: var(--ink); color: #f4f7f5; }
.panel-grid { display: grid; grid-template-columns: 460px 1fr; align-items: center; gap: clamp(60px, 9vw, 130px); }
.app-panel { overflow: hidden; border: 1px solid rgba(255,255,255,.18); border-radius: 20px; background: rgba(255,255,255,.98); color: var(--ink); box-shadow: 0 32px 85px rgba(0,0,0,.28); }
.panel-head { padding: 22px; border-bottom: 1px solid var(--line); }
.panel-head strong, .panel-head span { display: block; }.panel-head span { margin-top: 5px; color: var(--green); font-size: .77rem; }.panel-head i { display: inline-block; width: 7px; height: 7px; margin-right: 6px; border-radius: 50%; background: var(--green-bright); }
.panel-row { display: flex; align-items: center; justify-content: space-between; min-height: 58px; padding: 0 22px; border-bottom: 1px solid var(--line); font-size: .91rem; }
.panel-row.stack { border-bottom: 0; }.panel-row.stack strong { color: var(--green); font-family: var(--mono); font-size: .86rem; }
.switch { width: 34px; height: 20px; padding: 2px; border-radius: 99px; background: #bcc7c1; }.switch::after { content:""; display:block; width:16px; height:16px; border-radius:50%; background:white; box-shadow:0 1px 3px rgba(0,0,0,.25); }.switch.on { background: var(--green); }.switch.on::after { margin-left:14px; }
.panel-slider { height: 20px; margin: -4px 22px 14px; border-radius: 99px; background: #d7dfda; }.panel-slider span { display:block; position:relative; width:28%; height:100%; border-radius:inherit; background:var(--green); }.panel-slider span::after { content:""; position:absolute; right:-9px; top:1px; width:18px; height:18px; border-radius:50%; background:#fff; box-shadow:0 2px 6px rgba(0,0,0,.25); }
.panel-foot { display:flex; justify-content:space-between; padding:16px 22px; color:var(--ink-soft); font-size:.74rem; }
.panel-copy .eyebrow { color: #9eb5a8; }.panel-copy h2 { color: #fff; }.panel-copy > p:not(.eyebrow) { max-width:620px; color:#b9c8c0; font-size:1.08rem; }
.requirements { margin:38px 0 0; border-top:1px solid rgba(255,255,255,.16); }.requirements div { display:grid; grid-template-columns:125px 1fr; gap:20px; padding:15px 0; border-bottom:1px solid rgba(255,255,255,.12); }.requirements dt { color:#90a79b; font-size:.77rem; }.requirements dd { margin:0; color:#fff; font-size:.88rem; }

.trust-section { background: var(--green-pale); }
.trust-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(50px, 10vw, 140px); }
.trust-copy > p { margin: 0 0 26px; color: #385046; font-size: 1.16rem; line-height: 1.75; }
.faq-grid { display: grid; grid-template-columns: .65fr 1.35fr; gap: clamp(50px, 9vw, 130px); }
.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { position: relative; padding: 24px 44px 24px 0; list-style: none; cursor: pointer; font-family: var(--display); font-size: 1.08rem; font-weight: 700; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 4px; top: 21px; color: var(--green); font-family: var(--mono); font-size: 1.3rem; font-weight: 400; }
details[open] summary::after { content: "−"; }
details p { max-width: 670px; margin: -5px 0 25px; color: var(--ink-soft); }

.availability { padding: 64px 0; border-top: 1px solid var(--line); background: #fff; }
.availability-inner { display: grid; grid-template-columns: 104px 1fr auto; align-items: center; gap: 34px; }
.availability img { border-radius: 24px; box-shadow: 0 15px 34px rgba(19,37,29,.18); }
.availability .eyebrow { margin-bottom: 8px; }.availability h2 { margin:0; font-family:var(--display); font-size:clamp(1.8rem,3.2vw,3rem); letter-spacing:-.04em; }.availability p:not(.eyebrow) { max-width:700px; margin:9px 0 0; color:var(--ink-soft); }
.availability-action { display:flex; flex-direction:column; align-items:center; gap:9px; }.availability-action span { color:var(--ink-soft); font-size:.72rem; }.release-link.is-unavailable { cursor:not-allowed; background:#738078; border-color:#738078; }

footer { padding: 48px 0; border-top: 1px solid var(--line); background: #e8eeea; }
.footer-grid { display:grid; grid-template-columns:1fr auto auto; align-items:center; gap:50px; }.footer-grid > div:first-child p { margin:10px 0 0; color:var(--ink-soft); font-size:.82rem; }.footer-links { display:flex; gap:24px; }.copyright { margin:0; color:var(--ink-soft); font-size:.78rem; }

.legal-main { padding: 86px 0 110px; }
.legal-shell { width:min(780px, calc(100% - 40px)); margin:auto; }
.legal-main h1 { font-size:clamp(2.8rem,7vw,5.2rem); }.legal-main .updated { margin:18px 0 50px; color:var(--ink-soft); font-family:var(--mono); font-size:.74rem; }.legal-main h2 { margin:46px 0 14px; font-size:1.55rem; letter-spacing:-.025em; }.legal-main p, .legal-main li { color:#42584d; }.legal-main li + li { margin-top:8px; }.legal-main .callout { margin:34px 0; padding:24px; border:1px solid var(--line); border-radius:16px; background:#fff; }

@keyframes rise { from { opacity:0; transform:translateY(18px); } to { opacity:1; transform:none; } }
@keyframes tap { 0% { opacity:1; transform:translate(-50%,-50%) scale(.3); } 100% { opacity:0; transform:translate(-50%,-50%) scale(4); } }

@media (max-width: 900px) {
  .nav-shell { grid-template-columns:1fr auto; }.nav-shell nav { display:none; }
  .hero { padding-top:70px; }.hero-grid, .panel-grid, .trust-grid, .faq-grid { grid-template-columns:1fr; }.hero-grid { gap:58px; }.hero-copy { max-width:720px; }
  .principle-grid { grid-template-columns:1fr; }.principle-grid > div + div { border-left:0; border-top:1px solid var(--line); }
  .signal-flow { grid-template-columns:1fr; }.signal-flow li { display:grid; grid-template-columns:60px 1fr; gap:14px; }.signal-flow li + li::before { content:"↓"; left:50%; top:-19px; transform:translateX(-50%); }.signal-icon { margin-bottom:0; }
  .panel-grid { max-width:720px; }.app-panel { width:min(100%,500px); }.availability-inner { grid-template-columns:84px 1fr; }.availability-action { grid-column:1 / -1; align-items:flex-start; margin-left:118px; }.footer-grid { grid-template-columns:1fr; gap:26px; }
}

@media (max-width: 600px) {
  .shell { width:min(100% - 28px,1180px); }.site-header .button-small { display:none; }.nav-shell { height:64px; }
  .hero { padding:54px 0 68px; }.hero-grid { gap:44px; } h1 { font-size:clamp(3rem,15vw,4.4rem); }.lede { margin-top:22px; }
  .hero-actions { align-items:flex-start; flex-direction:column; }.truth-list { flex-direction:column; gap:9px; }
  .demo-body { padding:18px; }.trackpad-row { grid-template-columns:1fr 105px; gap:12px; }
  .section { padding:78px 0; }.section h2 { font-size:clamp(2.3rem,12vw,3.5rem); }.signal-flow { margin-top:44px; }.signal-flow li { padding-inline:0; }
  .panel-section { padding-block:78px; }.requirements div { grid-template-columns:105px 1fr; }
  .availability-inner { grid-template-columns:70px 1fr; gap:20px; }.availability img { border-radius:18px; }.availability-action { margin-left:90px; }
  .footer-links { flex-wrap:wrap; }.legal-main { padding-top:58px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior:auto; }
  *, *::before, *::after { animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; }
}