:root {
  color-scheme: light;
  --background: #F7F8F6;
  --surface: #FEFFFD;
  --surface-muted: #EEF1EE;
  --text: #161A18;
  --text-secondary: #69716D;
  --signal-blue: #3D5AFE;
  --blue-container: #E9EDFF;
  --available: #16865B;
  --green-container: #DDF7EA;
  --urgent: #B5472E;
  --urgent-container: #FFE8E2;
  --border: #D8DEDA;
  --border-soft: #E7EBE8;
  --inverse: #F3F5F3;
  --shadow: 0 18px 55px rgba(27, 39, 33, .08);
  --shadow-small: 0 8px 24px rgba(27, 39, 33, .07);
  --focus: #3D5AFE;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --radius-xs: 8px;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 24px;
  --radius-xl: 30px;
  --shell: 1200px;
  --font: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI Variable", "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  html[data-theme="auto"] {
    color-scheme: dark;
    --background: #0E1110;
    --surface: #151917;
    --surface-muted: #1C211E;
    --text: #F3F5F3;
    --text-secondary: #9DA6A1;
    --signal-blue: #8EA2FF;
    --blue-container: #27325D;
    --available: #55D69B;
    --green-container: #123B2C;
    --urgent: #FF896F;
    --urgent-container: #47231C;
    --border: #3A423E;
    --border-soft: #292F2C;
    --inverse: #161A18;
    --shadow: 0 20px 60px rgba(0, 0, 0, .3);
    --shadow-small: 0 8px 28px rgba(0, 0, 0, .24);
    --focus: #8EA2FF;
  }
}

html[data-theme="dark"] {
  color-scheme: dark;
  --background: #0E1110;
  --surface: #151917;
  --surface-muted: #1C211E;
  --text: #F3F5F3;
  --text-secondary: #9DA6A1;
  --signal-blue: #8EA2FF;
  --blue-container: #27325D;
  --available: #55D69B;
  --green-container: #123B2C;
  --urgent: #FF896F;
  --urgent-container: #47231C;
  --border: #3A423E;
  --border-soft: #292F2C;
  --inverse: #161A18;
  --shadow: 0 20px 60px rgba(0, 0, 0, .3);
  --shadow-small: 0 8px 28px rgba(0, 0, 0, .24);
  --focus: #8EA2FF;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--background);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  pointer-events: none;
  background-image: linear-gradient(rgba(105, 113, 109, .025) 1px, transparent 1px), linear-gradient(90deg, rgba(105, 113, 109, .025) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, #000, transparent 76%);
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration-thickness: .08em; text-underline-offset: .18em; }
button, input, summary { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { color: var(--text); font-weight: 520; letter-spacing: -.035em; }
h1 { font-size: clamp(3rem, 7vw, 5.6rem); line-height: .99; }
h2 { font-size: clamp(2.2rem, 4.2vw, 3.65rem); line-height: 1.06; }
h3 { line-height: 1.22; }
code { font-family: var(--mono); }
::selection { background: var(--blue-container); color: var(--text); }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 14px;
  transform: translateY(-160%);
  border-radius: var(--radius-xs);
  background: var(--text);
  color: var(--background);
  font-weight: 650;
}
.skip-link:focus { transform: none; }
.shell { width: min(calc(100% - 40px), var(--shell)); margin-inline: auto; }
.section { padding-block: clamp(80px, 11vw, 144px); }
.section-tinted { background: var(--surface); border-block: 1px solid var(--border-soft); }
.micro-label {
  margin-bottom: 14px;
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 680;
  letter-spacing: .145em;
  line-height: 1.4;
  text-transform: uppercase;
}
.section-heading { max-width: 720px; margin-bottom: clamp(42px, 6vw, 72px); }
.section-heading h2 { max-width: 660px; margin-bottom: 20px; }
.section-heading > p:last-child { margin: 0; color: var(--text-secondary); font-size: clamp(1rem, 1.8vw, 1.16rem); line-height: 1.7; }
.section-heading-compact { margin-bottom: 32px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  background: color-mix(in srgb, var(--background) 88%, transparent);
  backdrop-filter: blur(16px);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}
.site-header.is-scrolled { border-color: var(--border-soft); box-shadow: 0 8px 28px rgba(20, 27, 23, .04); }
.nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { min-height: 44px; display: inline-flex; align-items: center; gap: 11px; font-size: 18px; font-weight: 670; letter-spacing: -.025em; text-decoration: none; }
.brand-mark { position: relative; width: 26px; height: 26px; display: inline-grid; place-items: center; }
.brand-mark i { position: absolute; border: 1px solid var(--signal-blue); border-radius: 50%; }
.brand-mark i:nth-child(1) { width: 24px; height: 24px; opacity: .35; }
.brand-mark i:nth-child(2) { width: 15px; height: 15px; opacity: .6; }
.brand-mark i:nth-child(3) { width: 5px; height: 5px; border: 0; background: var(--signal-blue); }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { min-height: 44px; display: inline-flex; align-items: center; color: var(--text-secondary); font-size: 14px; font-weight: 560; text-decoration: none; transition: color 150ms ease; }
.nav-links a:hover { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.icon-button { width: 44px; height: 44px; display: grid; place-items: center; border: 1px solid var(--border); border-radius: 50%; background: var(--surface); color: var(--text); cursor: pointer; }
.icon-button:hover { border-color: var(--text-secondary); }
.theme-icon { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.5; }
.theme-icon-moon { display: none; }
html[data-theme="dark"] .theme-icon-sun { display: none; }
html[data-theme="dark"] .theme-icon-moon { display: block; }
@media (prefers-color-scheme: dark) {
  html[data-theme="auto"] .theme-icon-sun { display: none; }
  html[data-theme="auto"] .theme-icon-moon { display: block; }
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 10px 17px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: 650;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}
.button:hover:not(:disabled) { transform: translateY(-1px); }
.button svg { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.7; }
.button-large { min-height: 52px; padding: 14px 21px; }
.button-primary { background: var(--signal-blue); color: #fff; box-shadow: 0 8px 18px rgba(61, 90, 254, .18); }
html[data-theme="dark"] .button-primary { color: #101832; }
@media (prefers-color-scheme: dark) { html[data-theme="auto"] .button-primary { color: #101832; } }
.button-primary:hover:not(:disabled) { background: color-mix(in srgb, var(--signal-blue) 88%, var(--text)); box-shadow: 0 10px 24px rgba(61, 90, 254, .22); }
.button-secondary { border-color: var(--border); background: var(--surface); color: var(--text); }
.button-secondary:hover:not(:disabled) { border-color: var(--text-secondary); background: var(--surface-muted); }
.button-quiet { background: transparent; color: var(--text-secondary); }
.button-quiet:hover:not(:disabled) { background: var(--surface-muted); color: var(--text); }
.button:disabled { opacity: .5; cursor: not-allowed; box-shadow: none; }
.spinner { width: 16px; height: 16px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: spin 900ms linear infinite; }

.hero { min-height: calc(100svh - 72px); display: grid; grid-template-columns: minmax(0, 1.06fr) minmax(380px, .94fr); align-items: center; gap: clamp(50px, 7vw, 96px); padding-block: clamp(70px, 10vw, 126px); }
.hero-copy { position: relative; z-index: 2; }
.hero .micro-label { display: flex; align-items: center; gap: 9px; color: var(--text); }
.live-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--available); box-shadow: 0 0 0 5px var(--green-container); }
.hero h1 { margin-bottom: 28px; }
.hero-lede { max-width: 650px; margin-bottom: 32px; color: var(--text-secondary); font-size: clamp(1.06rem, 2vw, 1.25rem); line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 36px; }
.release-strip { max-width: 640px; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--border); }
.release-strip div { padding: 16px 14px 0 0; }
.release-strip dt { color: var(--text-secondary); font-size: 10px; font-weight: 650; letter-spacing: .12em; text-transform: uppercase; }
.release-strip dd { margin: 3px 0 0; font-size: 14px; font-weight: 630; }

.hero-visual { min-height: 570px; display: grid; place-items: center; }
.radar-stage { position: relative; width: min(100%, 520px); aspect-ratio: 1; display: grid; place-items: center; }
.radar-stage::before { position: absolute; inset: 5%; content: ""; border-radius: 50%; background: var(--blue-container); opacity: .38; filter: blur(48px); }
.radar { position: relative; width: 82%; aspect-ratio: 1; overflow: hidden; border: 1px solid var(--border); border-radius: 50%; background: color-mix(in srgb, var(--surface) 88%, transparent); box-shadow: inset 0 0 0 12px color-mix(in srgb, var(--surface) 40%, transparent); }
.radar-ring, .radar-cross, .radar-sweep, .radar-origin, .device-dot { position: absolute; }
.radar-ring { top: 50%; left: 50%; border: 1px solid var(--border); border-radius: 50%; transform: translate(-50%, -50%); }
.radar-ring-1 { width: 72%; height: 72%; }
.radar-ring-2 { width: 45%; height: 45%; }
.radar-ring-3 { width: 19%; height: 19%; }
.radar-cross { background: var(--border); opacity: .72; }
.radar-cross-x { top: 50%; left: 7%; width: 86%; height: 1px; }
.radar-cross-y { top: 7%; left: 50%; width: 1px; height: 86%; }
.radar-sweep { inset: 5%; border-radius: 50%; background: conic-gradient(from 0deg, transparent 0 320deg, color-mix(in srgb, var(--signal-blue) 7%, transparent) 342deg, color-mix(in srgb, var(--signal-blue) 30%, transparent) 359deg, transparent 360deg); animation: radar-spin 5.5s linear infinite; }
.radar-sweep::after { position: absolute; top: 50%; left: 50%; width: 45%; height: 1px; content: ""; transform-origin: left center; transform: rotate(-1deg); background: linear-gradient(90deg, var(--signal-blue), transparent); }
.radar-origin { top: 50%; left: 50%; width: 21px; height: 21px; display: grid; place-items: center; transform: translate(-50%, -50%); border-radius: 50%; background: var(--blue-container); box-shadow: 0 0 0 7px color-mix(in srgb, var(--blue-container) 60%, transparent); }
.radar-origin i { width: 7px; height: 7px; border-radius: 50%; background: var(--signal-blue); }
.device-dot { z-index: 3; display: flex; align-items: center; gap: 7px; }
.device-dot i { width: 12px; height: 12px; display: block; border: 3px solid var(--surface); border-radius: 50%; background: var(--available); box-shadow: 0 0 0 1px var(--available), 0 0 0 7px color-mix(in srgb, var(--green-container) 75%, transparent); animation: device-breathe 2.8s ease-in-out infinite; }
.device-dot b { padding: 3px 7px; border: 1px solid var(--border); border-radius: 20px; background: var(--surface); font-size: 10px; font-weight: 650; box-shadow: var(--shadow-small); }
.device-dot-a { top: 27%; left: 59%; }
.device-dot-b { top: 62%; left: 23%; }
.device-dot-b i { background: var(--signal-blue); box-shadow: 0 0 0 1px var(--signal-blue), 0 0 0 7px color-mix(in srgb, var(--blue-container) 75%, transparent); animation-delay: .7s; }
.device-dot-c { top: 71%; left: 66%; }
.device-dot-c i { animation-delay: 1.4s; }
.signal-card { position: absolute; z-index: 4; min-width: 224px; display: flex; align-items: center; gap: 12px; padding: 12px 14px; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); box-shadow: var(--shadow); }
.signal-card strong, .signal-card small { display: block; }
.signal-card strong { font-size: 13px; line-height: 1.35; }
.signal-card small { margin-top: 2px; color: var(--text-secondary); font-size: 11px; }
.signal-card-top { top: 7%; right: -1%; }
.signal-card-bottom { bottom: 8%; left: -3%; }
.avatar { width: 38px; height: 38px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 50%; font-size: 11px; font-weight: 700; }
.avatar-green { background: var(--green-container); color: var(--available); }
.queue-icon { width: 38px; height: 38px; display: flex; align-items: center; justify-content: center; gap: 3px; border-radius: 50%; background: var(--blue-container); }
.queue-icon i { width: 4px; height: 4px; border-radius: 50%; background: var(--signal-blue); }

.context-band { overflow: hidden; border-block: 1px solid var(--border-soft); background: var(--surface); }
.context-list { min-height: 66px; display: flex; align-items: center; justify-content: center; gap: clamp(15px, 3vw, 36px); white-space: nowrap; }
.context-list span { color: var(--text-secondary); font-size: 12px; font-weight: 640; letter-spacing: .08em; text-transform: uppercase; }
.context-list i { width: 4px; height: 4px; border-radius: 50%; background: var(--border); }

.connection-diagram { position: relative; display: grid; grid-template-columns: 1fr minmax(200px, .8fr) 1fr; align-items: center; gap: 24px; padding: clamp(32px, 5vw, 58px); border: 1px solid var(--border); border-radius: var(--radius-xl); background: var(--surface); }
.diagram-phone { display: flex; flex-direction: column; align-items: center; text-align: center; }
.diagram-phone strong { margin-top: 14px; font-size: 17px; }
.diagram-phone small { color: var(--text-secondary); }
.diagram-device { position: relative; width: 64px; height: 104px; display: block; border: 2px solid var(--text); border-radius: 14px; background: var(--background); }
.diagram-device::before { position: absolute; top: 6px; left: 50%; width: 18px; height: 3px; content: ""; transform: translateX(-50%); border-radius: 4px; background: var(--border); }
.diagram-device i { position: absolute; top: 50%; left: 50%; width: 9px; height: 9px; transform: translate(-50%, -50%); border-radius: 50%; background: var(--signal-blue); box-shadow: 0 0 0 10px var(--blue-container), 0 0 0 18px color-mix(in srgb, var(--blue-container) 38%, transparent); }
.diagram-link { position: relative; height: 100px; display: grid; place-items: center; }
.link-line { width: 100%; height: 1px; background: repeating-linear-gradient(90deg, var(--signal-blue), var(--signal-blue) 7px, transparent 7px, transparent 13px); }
.link-label { position: absolute; top: 14px; padding: 4px 10px; border-radius: 20px; background: var(--blue-container); color: var(--signal-blue); font-size: 10px; font-weight: 680; letter-spacing: .08em; text-transform: uppercase; }
.link-pulse { position: absolute; top: 50%; width: 8px; height: 8px; transform: translateY(-50%); border-radius: 50%; background: var(--signal-blue); animation: link-move 3s ease-in-out infinite; }
.link-pulse-b { animation-delay: 1.5s; }
.diagram-absent { position: absolute; right: 20px; bottom: 16px; display: flex; gap: 8px; }
.diagram-absent span { padding: 2px 8px; border-radius: 20px; background: var(--surface-muted); color: var(--text-secondary); font-size: 10px; }
.notice { display: flex; gap: 16px; padding: 22px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); }
.notice-honest { margin-top: 22px; border-left: 3px solid var(--signal-blue); }
.notice-icon { width: 42px; height: 42px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 50%; background: var(--blue-container); color: var(--signal-blue); }
.notice-icon svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-width: 1.6; }
.notice h3 { margin: 0 0 5px; font-size: 17px; }
.notice p { margin: 0; color: var(--text-secondary); }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature-card { position: relative; min-height: 310px; display: flex; flex-direction: column; align-items: flex-start; padding: 26px; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--background); transition: transform 170ms ease, border-color 170ms ease, box-shadow 170ms ease; }
.feature-card:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--signal-blue) 35%, var(--border)); box-shadow: var(--shadow-small); }
.feature-card-wide { grid-column: span 2; display: grid; grid-template-columns: auto minmax(0, 1fr) 180px; align-items: center; gap: 22px; }
.feature-icon { width: 45px; height: 45px; display: grid; place-items: center; margin-bottom: 30px; border-radius: var(--radius-sm); background: var(--blue-container); color: var(--signal-blue); }
.feature-card-wide .feature-icon { margin: 0; align-self: start; }
.feature-icon-urgent { background: var(--urgent-container); color: var(--urgent); }
.feature-icon svg { width: 23px; height: 23px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.5; }
.feature-card .micro-label { margin-bottom: 10px; }
.feature-card h3 { margin-bottom: 10px; font-size: 21px; }
.feature-card p:not(.micro-label) { margin-bottom: 18px; color: var(--text-secondary); }
.feature-card .status-chip { margin-top: auto; }
.mini-radar { position: relative; width: 152px; height: 152px; justify-self: end; border: 1px solid var(--border); border-radius: 50%; }
.mini-radar i { position: absolute; top: 50%; left: 50%; border: 1px solid var(--border); border-radius: 50%; transform: translate(-50%, -50%); }
.mini-radar i:nth-child(1) { width: 70%; height: 70%; }.mini-radar i:nth-child(2) { width: 42%; height: 42%; }.mini-radar i:nth-child(3) { width: 12%; height: 12%; background: var(--signal-blue); border: 0; }
.mini-radar b, .mini-radar em { position: absolute; width: 9px; height: 9px; border-radius: 50%; background: var(--available); box-shadow: 0 0 0 5px var(--green-container); }
.mini-radar b { top: 28%; right: 25%; }.mini-radar em { bottom: 23%; left: 29%; background: var(--signal-blue); box-shadow: 0 0 0 5px var(--blue-container); }
.status-chip { min-height: 27px; display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border: 1px solid transparent; border-radius: 999px; font-size: 10px; font-weight: 720; letter-spacing: .085em; line-height: 1; text-transform: uppercase; white-space: nowrap; }
.status-chip::before { width: 6px; height: 6px; content: ""; border-radius: 50%; background: currentColor; }
.status-available { background: var(--green-container); color: var(--text); }
.status-available::before { background: var(--available); }
.status-waiting { background: var(--blue-container); color: var(--text); }
.status-waiting::before { background: var(--signal-blue); }
.status-delivered { border-color: color-mix(in srgb, var(--available) 38%, transparent); color: var(--text); }
.status-delivered::before { background: var(--available); }
.status-urgent { background: var(--urgent-container); color: var(--urgent); }
.status-out { background: var(--surface-muted); color: var(--text-secondary); }

.screenshot-section { overflow: hidden; }
.phone-gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(24px, 5vw, 70px); align-items: start; padding-inline: clamp(0px, 3vw, 36px); }
.phone-figure { margin: 0; }
.phone-figure-raised { margin-top: -28px; }
.phone-shell { position: relative; width: 100%; padding: 9px; overflow: hidden; border: 1px solid #3D4541; border-radius: 32px; background: #111513; box-shadow: 0 30px 70px rgba(14, 21, 17, .2), inset 0 0 0 2px #2A302D; }
.phone-shell img { width: 100%; height: auto; border-radius: 24px; background: #F7F8F6; }
.phone-speaker { position: absolute; top: 14px; left: 50%; z-index: 2; width: 25%; height: 7px; transform: translateX(-50%); border-radius: 10px; background: #0B0D0C; box-shadow: 0 0 0 1px rgba(255,255,255,.06); }
.phone-figure figcaption { padding-top: 18px; text-align: center; }
.phone-figure figcaption strong, .phone-figure figcaption span { display: block; }
.phone-figure figcaption strong { font-size: 15px; }.phone-figure figcaption span { color: var(--text-secondary); font-size: 13px; }

.install-layout { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: clamp(50px, 8vw, 100px); }
.install-layout .section-heading { margin: 0; }
.install-steps { margin: 0; padding: 0; list-style: none; counter-reset: install; }
.install-steps li { min-height: 154px; display: grid; grid-template-columns: 50px 1fr; gap: 18px; padding: 26px 0; border-top: 1px solid var(--border); }
.install-steps li:last-child { border-bottom: 1px solid var(--border); }
.install-steps li > span { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; background: var(--blue-container); color: var(--signal-blue); font-size: 14px; font-weight: 720; }
.install-steps h3 { margin-bottom: 6px; font-size: 20px; }
.install-steps p { margin: 0; color: var(--text-secondary); }
.requirements { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 22px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--background); }
.requirements > div { min-height: 120px; display: grid; grid-template-columns: 28px 1fr; align-content: center; column-gap: 10px; padding: 22px; border-right: 1px solid var(--border); }
.requirements > div:last-child { border: 0; }
.requirements strong, .requirements small { grid-column: 2; }.requirements strong { font-size: 14px; }.requirements small { color: var(--text-secondary); font-size: 12px; }
.check { grid-row: 1 / 3; width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; background: var(--green-container); color: var(--available); font-size: 13px; font-weight: 800; }

.download-card { display: grid; grid-template-columns: 1.05fr .95fr; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-xl); background: var(--surface); box-shadow: var(--shadow); }
.download-main { padding: clamp(30px, 5vw, 60px); }
.download-main h2 { margin-bottom: 16px; font-size: clamp(2.2rem, 5vw, 4.2rem); }.download-main h2 span { color: var(--signal-blue); }
.download-main > p:not(.micro-label) { max-width: 560px; color: var(--text-secondary); }
.download-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 30px; }
.download-facts { margin: 0; display: grid; align-content: center; background: var(--surface-muted); }
.download-facts > div { display: grid; grid-template-columns: 110px 1fr; gap: 18px; padding: 18px 30px; border-bottom: 1px solid var(--border); }
.download-facts > div:last-child { border: 0; }
.download-facts dt { color: var(--text-secondary); font-size: 11px; font-weight: 680; letter-spacing: .09em; text-transform: uppercase; }
.download-facts dd { margin: 0; font-size: 14px; font-weight: 630; }
.download-facts dd span { display: block; color: var(--text-secondary); font-size: 11px; font-weight: 400; }
.checksum-row dd { min-width: 0; display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 8px; }
.checksum-row code { overflow: hidden; color: var(--text-secondary); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.copy-button { min-width: 52px; min-height: 36px; border: 1px solid var(--border); border-radius: var(--radius-xs); background: var(--surface); color: var(--text); font-size: 11px; font-weight: 650; cursor: pointer; }

.faq-release-layout { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(340px, .92fr); gap: clamp(44px, 8vw, 100px); }
.faq-list { border-top: 1px solid var(--border); }
.faq-list details { border-bottom: 1px solid var(--border); }
.faq-list summary { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 18px 2px; font-weight: 620; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { position: relative; width: 20px; height: 20px; flex: 0 0 auto; }
.faq-list summary span::before, .faq-list summary span::after { position: absolute; top: 50%; left: 50%; width: 12px; height: 1px; content: ""; transform: translate(-50%, -50%); background: currentColor; transition: transform 160ms ease; }
.faq-list summary span::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq-list details[open] summary span::after { transform: translate(-50%, -50%) rotate(0); }
.faq-list details p { max-width: 650px; margin: -4px 42px 22px 2px; color: var(--text-secondary); }
.release-notes { padding: 26px; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); }
.release-notes header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.release-notes time { color: var(--text-secondary); font-size: 12px; }
.release-notes ul { margin: 0; padding-left: 19px; color: var(--text-secondary); }
.release-notes li + li { margin-top: 9px; }
.previous-releases { margin-top: 20px; padding: 24px; border: 1px dashed var(--border); border-radius: var(--radius-md); }
.previous-releases h3 { margin-bottom: 8px; font-size: 17px; }.previous-releases p { color: var(--text-secondary); }
.text-link { min-height: 44px; display: inline-flex; align-items: center; gap: 8px; color: var(--signal-blue); font-weight: 650; }

.site-footer { padding-top: 64px; border-top: 1px solid var(--border); background: var(--surface); }
.footer-grid { display: grid; grid-template-columns: 1.3fr .7fr 1fr; gap: 56px; padding-bottom: 56px; }
.footer-brand { margin-bottom: 15px; }.footer-grid > div:first-child p { max-width: 380px; color: var(--text-secondary); }
.footer-version { color: var(--text-secondary); font-size: 12px; }
.footer-grid h2 { margin-bottom: 13px; font-size: 11px; letter-spacing: .12em; text-transform: uppercase; }
.footer-grid nav a { min-height: 34px; display: block; color: var(--text-secondary); font-size: 14px; text-decoration: none; }.footer-grid nav a:hover { color: var(--text); }
.footer-verify p { margin-bottom: 8px; color: var(--text-secondary); font-size: 13px; }
.footer-verify code { display: block; margin-bottom: 8px; padding: 9px 11px; overflow: auto; border: 1px solid var(--border); border-radius: var(--radius-xs); background: var(--background); font-size: 11px; white-space: nowrap; }
.footer-bottom { min-height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-top: 1px solid var(--border); color: var(--text-secondary); font-size: 11px; letter-spacing: .04em; }
.mobile-download-bar { display: none; }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity 480ms ease, transform 480ms ease; }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal-delay { transition-delay: 100ms; }
@keyframes radar-spin { to { transform: rotate(360deg); } }
@keyframes device-breathe { 0%,100% { transform: scale(1); } 50% { transform: scale(1.13); } }
@keyframes link-move { 0%,100% { left: 2%; opacity: 0; } 15% { opacity: 1; } 85% { opacity: 1; } 99% { left: 96%; opacity: 0; } }
@keyframes spin { to { transform: rotate(360deg); } }

/* Style guide */
.guide-title { color: var(--text-secondary); font-size: 13px; font-weight: 600; }.guide-title span { margin-left: 6px; color: var(--text); }
.guide-hero { min-height: 480px; display: grid; grid-template-columns: 1.15fr .85fr; align-items: center; gap: 70px; padding-block: 86px; border-bottom: 1px solid var(--border); }
.guide-hero h1 { margin-bottom: 22px; }.guide-hero > div:first-child > p:last-child { max-width: 680px; color: var(--text-secondary); font-size: 18px; }
.guide-principles { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 9px; }
.guide-principles span { min-height: 42px; display: inline-flex; align-items: center; padding: 8px 14px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); font-size: 12px; font-weight: 620; }
.guide-layout { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: clamp(40px, 7vw, 96px); align-items: start; }
.guide-sidebar { position: sticky; top: 100px; padding-block: 70px; }
.guide-sidebar nav { display: grid; gap: 3px; }
.guide-sidebar a { min-height: 38px; display: flex; align-items: center; padding-inline: 10px; border-left: 1px solid var(--border); color: var(--text-secondary); font-size: 12px; text-decoration: none; }
.guide-sidebar a:hover { border-color: var(--signal-blue); color: var(--text); }
.guide-content { min-width: 0; }
.guide-section { padding-block: clamp(72px, 9vw, 110px); border-bottom: 1px solid var(--border); }
.guide-section:last-child { border-bottom: 0; }
.guide-section > h2 { max-width: 700px; margin-bottom: 20px; }
.guide-intro { max-width: 720px; margin-bottom: 36px; color: var(--text-secondary); font-size: 17px; }
.principle-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.principle-grid article { min-height: 210px; padding: 24px; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); }
.principle-grid article > span { color: var(--signal-blue); font-family: var(--mono); font-size: 11px; }.principle-grid h3 { margin: 28px 0 8px; }.principle-grid p { margin: 0; color: var(--text-secondary); }
.do-dont { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 14px; }
.do-dont > div { padding: 24px; border-radius: var(--radius-md); }.do-dont h3 { margin-bottom: 12px; font-size: 15px; }.do-dont ul { margin: 0; padding-left: 18px; color: var(--text-secondary); }
.do-dont li + li { margin-top: 5px; }.do { background: var(--green-container); }.dont { background: var(--urgent-container); }
.theme-token-block { margin-top: 24px; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-lg); background: #F7F8F6; color: #161A18; }
.theme-token-block > header { display: flex; justify-content: space-between; padding: 20px 24px; border-bottom: 1px solid #D8DEDA; }.theme-token-block header h3 { margin: 0; color: inherit; }.theme-token-block header span { color: #69716D; font-size: 12px; }
.theme-token-dark { background: #0E1110; color: #F3F5F3; }.theme-token-dark > header { border-color: #3A423E; }.theme-token-dark header span { color: #9DA6A1; }.theme-token-dark h3 { color: #F3F5F3; }
.swatch-grid { display: grid; grid-template-columns: repeat(2, 1fr); }
.swatch { min-width: 0; display: grid; grid-template-columns: 62px 1fr; align-items: center; gap: 14px; padding: 15px 20px; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor; border-color: rgba(105,113,109,.22); }
.swatch:nth-child(even) { border-right: 0; }.swatch i { width: 54px; height: 38px; border: 1px solid rgba(105,113,109,.3); border-radius: var(--radius-xs); background: var(--swatch); }.swatch b, .swatch code { display: block; }.swatch b { font-size: 12px; }.swatch code { opacity: .66; font-size: 11px; }
.type-specimens { border-top: 1px solid var(--border); }
.type-row { display: grid; grid-template-columns: 185px minmax(0, 1fr); gap: 24px; align-items: baseline; padding: 22px 0; border-bottom: 1px solid var(--border); }.type-row > span { color: var(--text-secondary); font-family: var(--mono); font-size: 10px; }.type-row p { margin: 0; }.type-display { font-size: clamp(42px, 6vw, 64px); font-weight: 520; letter-spacing: -.04em; line-height: 1.03; }.type-h1 { font-size: 48px; font-weight: 520; letter-spacing: -.035em; line-height: 1.08; }.type-h2 { font-size: 36px; font-weight: 520; letter-spacing: -.03em; line-height: 1.16; }.type-h3 { font-size: 22px; font-weight: 520; }.type-body-large { font-size: 18px; line-height: 1.65; }
.token-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }.token-columns h3 { margin-bottom: 22px; }
.spacing-scale { display: grid; gap: 10px; }.spacing-scale span { display: grid; grid-template-columns: 110px 1fr; align-items: center; gap: 12px; }.spacing-scale i { width: var(--size); height: 10px; min-width: 4px; border-radius: 2px; background: var(--signal-blue); }.spacing-scale b { color: var(--text-secondary); font-family: var(--mono); font-size: 11px; }
.radius-scale { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }.radius-scale span { text-align: center; }.radius-scale i { height: 62px; display: block; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }.radius-scale b { color: var(--text-secondary); font-family: var(--mono); font-size: 10px; }.token-note { margin-top: 22px; color: var(--text-secondary); font-size: 13px; }
.component-stage { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 28px; padding: 30px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); }.component-stage > div { display: grid; gap: 9px; }.spec-label { display: block; margin-bottom: 9px; color: var(--text-secondary); font-size: 10px; font-weight: 680; letter-spacing: .11em; text-transform: uppercase; }.usage-notes { margin: 22px 0 0; padding-left: 19px; color: var(--text-secondary); }.usage-notes li + li { margin-top: 6px; }
.chip-stage { align-items: center; }.status-rules { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 24px; margin-top: 26px; }.status-rules p { margin: 0; color: var(--text-secondary); font-size: 13px; }.status-rules strong { color: var(--text); }
.component-catalog { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }.component-catalog > article { min-width: 0; }.catalog-wide { grid-column: 1 / -1; }.mini-download-card { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 24px; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); }.mini-download-card h3 { margin: 0 0 4px; }.mini-download-card p:not(.micro-label) { margin: 0; color: var(--text-secondary); font-size: 12px; }.catalog-feature { min-height: 246px; background: var(--surface); }.catalog-faq { border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); }.catalog-faq details { padding-inline: 20px; border: 0; }.guide-phone { max-width: 250px; margin-inline: auto; }.nav-sample { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 16px; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); }.nav-sample > span { color: var(--text-secondary); font-size: 12px; }
.icon-grid { display: grid; grid-template-columns: repeat(6, 1fr); border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); }.icon-grid span { min-height: 132px; display: grid; place-items: center; align-content: center; gap: 12px; border-right: 1px solid var(--border); }.icon-grid span:last-child { border: 0; }.icon-grid svg { width: 28px; height: 28px; fill: none; stroke: var(--text); stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.5; }.icon-grid b { color: var(--text-secondary); font-size: 10px; letter-spacing: .07em; text-transform: uppercase; }
.motion-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 44px; align-items: center; }.guide-radar-wrap { display: grid; place-items: center; padding: 20px; }.guide-radar { width: min(100%, 320px); }.motion-rules h3 { margin-bottom: 15px; }.motion-rules ul { padding-left: 18px; color: var(--text-secondary); }.motion-rules li + li { margin-top: 7px; }.interaction-states { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 34px; border: 1px solid var(--border); border-radius: var(--radius-md); }.interaction-states div { padding: 18px; border-right: 1px solid var(--border); }.interaction-states div:last-child { border: 0; }.interaction-states span, .interaction-states b { display: block; }.interaction-states span { color: var(--text-secondary); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }.interaction-states b { margin-top: 8px; font-size: 14px; }.interaction-states p { margin: 5px 0 0; color: var(--text-secondary); font-size: 12px; }
.breakpoint-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }.breakpoint-grid article { padding: 24px; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); }.breakpoint-grid span, .breakpoint-grid strong { display: block; }.breakpoint-grid span { color: var(--signal-blue); font-size: 11px; font-weight: 680; letter-spacing: .11em; text-transform: uppercase; }.breakpoint-grid strong { margin-top: 24px; font-size: 23px; }.breakpoint-grid p { margin: 8px 0 0; color: var(--text-secondary); }
.access-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }.access-grid article { min-height: 230px; padding: 24px; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); }.access-grid article > span { width: 42px; height: 42px; display: grid; place-items: center; border-radius: var(--radius-sm); background: var(--blue-container); color: var(--signal-blue); font-family: var(--mono); font-size: 13px; }.access-grid h3 { margin: 28px 0 8px; font-size: 17px; }.access-grid p { margin: 0; color: var(--text-secondary); font-size: 13px; }.a11y-checklist { margin-top: 14px; padding: 26px; border-radius: var(--radius-md); background: var(--green-container); }.a11y-checklist h3 { margin-bottom: 12px; }.a11y-checklist ul { columns: 2; margin: 0; padding-left: 18px; color: var(--text-secondary); }.guide-footer { padding-top: 0; }.guide-footer a { color: var(--signal-blue); }

@media (max-width: 1023px) {
  .nav-links { display: none; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-copy { max-width: 780px; }
  .hero-visual { min-height: 520px; }
  .radar-stage { width: min(82vw, 520px); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }.feature-card-wide { grid-column: 1 / -1; }
  .phone-gallery { gap: 24px; padding: 0; }.phone-shell { border-radius: 26px; }.phone-shell img { border-radius: 19px; }
  .install-layout { grid-template-columns: 1fr; }.install-layout .section-heading { max-width: 720px; }.requirements { grid-template-columns: repeat(2, 1fr); }.requirements > div:nth-child(2) { border-right: 0; }.requirements > div:nth-child(-n+2) { border-bottom: 1px solid var(--border); }
  .faq-release-layout { grid-template-columns: 1fr; }
  .guide-hero { grid-template-columns: 1fr; min-height: 380px; gap: 30px; }.guide-principles { justify-content: flex-start; }
  .guide-layout { grid-template-columns: 1fr; }.guide-sidebar { display: none; }
  .icon-grid { grid-template-columns: repeat(3, 1fr); }.icon-grid span:nth-child(3) { border-right: 0; }.icon-grid span:nth-child(-n+3) { border-bottom: 1px solid var(--border); }
  .access-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 639px) {
  html { scroll-padding-top: 74px; }
  body { padding-bottom: 78px; }
  .shell { width: min(calc(100% - 40px), var(--shell)); }
  .section { padding-block: 78px; }
  .site-header { backdrop-filter: blur(12px); }
  .nav { min-height: 64px; gap: 8px; }.nav-download { display: none; }.brand { font-size: 17px; }.guide-title { display: none; }
  .hero { gap: 36px; padding-block: 64px 50px; }.hero h1 { font-size: clamp(3.1rem, 15vw, 4.5rem); }.hero-lede { font-size: 1.05rem; }.hero-actions { display: grid; }.hero-actions .button { width: 100%; }.release-strip { grid-template-columns: repeat(2, 1fr); gap: 14px 0; }
  .hero-visual { min-height: 400px; overflow: visible; }.radar-stage { width: min(94vw, 410px); }.signal-card { min-width: 190px; padding: 10px 11px; }.signal-card-top { top: 1%; right: -2%; }.signal-card-bottom { bottom: 1%; left: -1%; }.device-dot b { display: none; }
  .context-list { justify-content: flex-start; overflow: hidden; }.context-list span:nth-of-type(n+4), .context-list i:nth-of-type(n+4) { display: none; }
  .connection-diagram { grid-template-columns: 1fr 70px 1fr; gap: 8px; padding: 26px 12px 58px; }.diagram-device { width: 52px; height: 88px; }.diagram-phone strong { font-size: 13px; }.diagram-phone small { font-size: 10px; }.link-label { top: 5px; max-width: 92px; text-align: center; }.diagram-absent { right: 10px; bottom: 12px; }.notice { padding: 18px; }
  .feature-grid { grid-template-columns: 1fr; }.feature-card-wide { display: flex; grid-column: auto; }.feature-card-wide .feature-icon { margin-bottom: 30px; }.mini-radar { position: absolute; right: -45px; bottom: -48px; opacity: .5; }.feature-card { min-height: 285px; }
  .phone-gallery { grid-template-columns: 78% 78% 78%; gap: 22px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 20px 20px 28px; margin-inline: -20px; scrollbar-width: none; }.phone-gallery::-webkit-scrollbar { display: none; }.phone-figure, .phone-figure-raised { margin: 0; scroll-snap-align: center; }.phone-shell { border-radius: 30px; }.phone-shell img { border-radius: 22px; }
  .install-steps li { grid-template-columns: 44px 1fr; }.requirements { grid-template-columns: 1fr; }.requirements > div { border-right: 0; border-bottom: 1px solid var(--border); }.requirements > div:last-child { border-bottom: 0; }
  .download-card { grid-template-columns: 1fr; }.download-main { padding: 28px 22px; }.download-actions { display: grid; }.download-actions .button { width: 100%; }.download-facts > div { grid-template-columns: 82px 1fr; padding: 17px 20px; }.checksum-row dd { grid-template-columns: 1fr; }.copy-button { justify-self: start; min-height: 44px; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }.footer-bottom { align-items: flex-start; flex-direction: column; justify-content: center; padding-block: 18px; }.site-footer { padding-top: 50px; }
  .mobile-download-bar { position: fixed; right: 10px; bottom: 10px; left: 10px; z-index: 90; min-height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 9px 9px 9px 15px; border: 1px solid var(--border); border-radius: var(--radius-md); background: color-mix(in srgb, var(--surface) 94%, transparent); box-shadow: var(--shadow); backdrop-filter: blur(14px); }.mobile-download-bar span strong, .mobile-download-bar span small { display: block; }.mobile-download-bar span strong { font-size: 13px; }.mobile-download-bar span small { color: var(--text-secondary); font-size: 10px; }.mobile-download-bar .button { min-height: 46px; }
  .guide-hero { padding-block: 65px; }.principle-grid, .do-dont, .token-columns, .component-catalog, .motion-grid, .breakpoint-grid, .access-grid { grid-template-columns: 1fr; }.swatch-grid { grid-template-columns: 1fr; }.swatch { border-right: 0; }.type-row { grid-template-columns: 1fr; gap: 6px; }.type-h1 { font-size: 38px; }.type-h2 { font-size: 31px; }.radius-scale { grid-template-columns: repeat(5, minmax(48px, 1fr)); overflow-x: auto; }.status-rules { grid-template-columns: 1fr; }.catalog-wide { grid-column: auto; }.icon-grid { grid-template-columns: repeat(2, 1fr); }.icon-grid span, .icon-grid span:nth-child(3) { border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }.icon-grid span:nth-child(even) { border-right: 0; }.icon-grid span:nth-last-child(-n+2) { border-bottom: 0; }.interaction-states { grid-template-columns: repeat(2, 1fr); }.interaction-states div:nth-child(2) { border-right: 0; }.interaction-states div:nth-child(-n+2) { border-bottom: 1px solid var(--border); }.a11y-checklist ul { columns: 1; }.mini-download-card, .nav-sample { align-items: stretch; flex-direction: column; }.nav-sample { display: grid; }.style-guide-page .mobile-download-bar { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .radar-sweep { transform: rotate(32deg); }
  .reveal { opacity: 1; transform: none; }
  .button:hover:not(:disabled), .feature-card:hover { transform: none; }
}

@media print {
  .site-header, .mobile-download-bar, .theme-toggle { display: none !important; }
  body { padding: 0; background: #fff; color: #000; }
  .guide-sidebar { display: none; }.guide-layout { display: block; }.guide-section { break-inside: avoid; }
}