/* NockAI landing page. Styled after the Offloop reference: serif display type, Inter body,
   flat top header, warm near black background, no borders (depth from surfaces), large two column sections. */

:root {
  --bg: #0c0b0b;
  --panel: #121111;
  --card: #151414;
  --card-raised: #1f1d1d;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);

  --text: #ffffff;
  --text-soft: #9ca3af;
  --text-dim: rgba(255, 255, 255, 0.45);
  --text-body: rgba(255, 255, 255, 0.7);

  --accent: #4f8bff;
  --navy: #0a1a3d;
  --danger: #f87171;
  --blue: #4f8bff;
  --cyan: #5fd0e8;
  --green: #58d6a0;
  --violet: #b197fc;
  --rose: #ff7a90;

  --ease-fluid: cubic-bezier(0.32, 0.72, 0, 1);

  --font-display: "Instrument Serif", "Times New Roman", Times, serif;
  --font-sans: "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --gutter: 20px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--font-sans); font-size: 14px; line-height: 20px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { margin: 0; font-weight: 400; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.display { font-family: var(--font-display); font-weight: 400; letter-spacing: -0.02em; }
.body-soft { color: var(--text-soft); max-width: 365px; }
.eyebrow { font-size: 11px; line-height: 16px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.09em; color: var(--text-soft); }
.muted { color: var(--text-dim); }

.skip-link { position: absolute; left: 16px; top: -64px; z-index: 100; padding: 8px 12px; background: #fff; color: #000; border-radius: 8px; font-weight: 600; }
.skip-link:focus { top: 16px; }

/* Header: flat, full width, like the reference */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 70; height: 72px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 max(var(--gutter), calc((100% - 1264px) / 2 + var(--gutter)));
}
/* Black gradient with a thin blur that fades out toward the bottom, like the reference. Appears once the page scrolls. */
.header::before {
  content: ""; position: absolute; inset: 0 0 -40px 0; z-index: -1; pointer-events: none; opacity: 0;
  background: linear-gradient(to bottom, rgba(12, 11, 11, 0.92) 0%, rgba(12, 11, 11, 0.6) 55%, rgba(12, 11, 11, 0) 100%);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 55%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, #000 55%, transparent 100%);
  transition: opacity 600ms var(--ease-fluid);
}
.header.is-scrolled::before { opacity: 1; }
.top-sentinel { position: absolute; top: 0; left: 0; width: 1px; height: 48px; pointer-events: none; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-size: 16px; font-weight: 600; }
.brand-mark { color: var(--accent); }
.nav { display: none; align-items: center; gap: 24px; }
.nav a { font-size: 13px; line-height: 18px; font-weight: 500; color: var(--text-dim); transition: color 200ms var(--ease-fluid); }
.nav a:hover { color: var(--text); }

.pill {
  display: inline-flex; align-items: center; justify-content: center; padding: 10px 14px; border: 0; border-radius: 9999px;
  font-size: 14px; line-height: 24px; font-weight: 500; cursor: pointer;
  transition: background-color 400ms var(--ease-fluid), transform 400ms var(--ease-fluid);
}
.pill:hover { transform: translateY(-1px); }
.pill:active { transform: scale(0.98) translateY(1px); }
.pill-solid { background: #fcfcfc; color: #1b1b1b; }
.pill-solid:hover { background: #e8e8e8; }
.pill-ghost { padding: 6px 12px; background: rgba(255, 255, 255, 0.1); color: #fff; font-size: 13px; line-height: 18px; }
.pill-ghost:hover { background: rgba(255, 255, 255, 0.16); }
.pill[disabled] { opacity: 0.5; cursor: progress; transform: none; }

.menu-toggle { position: relative; width: 40px; height: 36px; padding: 0; background: transparent; border: 0; cursor: pointer; }
.menu-toggle span { position: absolute; left: 10px; width: 20px; height: 2px; background: #fff; border-radius: 2px; transition: all 700ms var(--ease-fluid); }
.menu-toggle span:nth-child(1) { top: 13px; }
.menu-toggle span:nth-child(2) { top: 21px; }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { top: 17px; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { top: 17px; transform: rotate(-45deg); }
.menu-toggle { z-index: 60; }

.menu {
  position: fixed; inset: 0; z-index: 60; display: flex; align-items: center; justify-content: center;
  background: rgba(12, 11, 11, 0.86); backdrop-filter: blur(48px);
  opacity: 0; visibility: hidden; transition: opacity 700ms var(--ease-fluid), visibility 700ms var(--ease-fluid);
}
.menu.is-open { opacity: 1; visibility: visible; }
.menu ul { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.menu li { font-family: var(--font-display); font-size: 40px; line-height: 44px; opacity: 0; transform: translateY(48px); transition: opacity 700ms var(--ease-fluid), transform 700ms var(--ease-fluid); }
.menu.is-open li { opacity: 1; transform: translateY(0); }
.menu.is-open li:nth-child(1) { transition-delay: 100ms; }
.menu.is-open li:nth-child(2) { transition-delay: 150ms; }
.menu.is-open li:nth-child(3) { transition-delay: 200ms; }
.menu.is-open li:nth-child(4) { transition-delay: 250ms; }
.menu.is-open li:nth-child(5) { transition-delay: 300ms; }
.menu.is-open li:nth-child(6) { transition-delay: 350ms; }
.menu .pill { font-family: var(--font-sans); }

/* Motion */
.rise { opacity: 0; transform: translateY(24px); filter: blur(8px); animation: rise 1100ms var(--ease-fluid) forwards; }
.hero-inner > .rise:nth-child(1) { animation-delay: 150ms; }
.hero-inner > .rise:nth-child(2) { animation-delay: 300ms; }
.hero-inner > .rise:nth-child(3) { animation-delay: 450ms; }
.hero-inner > .rise:nth-child(4) { animation-delay: 600ms; }
@keyframes rise { to { opacity: 1; transform: translateY(0); filter: blur(0); } }

.reveal {
  opacity: 0; transform: translateY(40px); filter: blur(10px);
  transition: opacity 1000ms var(--ease-fluid), transform 1000ms var(--ease-fluid), filter 1000ms var(--ease-fluid);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); filter: blur(0); }

/* Hero */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; align-items: flex-end; overflow: hidden; background: var(--bg); }
.hero-glow {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 22% 38%, rgba(70, 130, 255, 0.42) 0%, rgba(70, 130, 255, 0) 70%),
    radial-gradient(ellipse 90% 70% at 50% 105%, #0b2a66 0%, #071533 45%, rgba(12, 11, 11, 0) 85%),
    radial-gradient(ellipse 60% 40% at 80% 30%, rgba(30, 80, 200, 0.32) 0%, rgba(30, 80, 200, 0) 70%);
}
.hero-grain {
  position: absolute; inset: 0; opacity: 0.18; mix-blend-mode: overlay; pointer-events: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
.hero-media {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center top; opacity: 0;
  transition: opacity 1400ms var(--ease-fluid);
}
.hero-media.is-ready { opacity: 1; }
.hero-media.is-ready ~ .hero-grain { opacity: 0.1; }
/* Darkens the lower half so the headline stays readable over any video frame. */
.hero-media.is-ready ~ .hero-scrim { opacity: 1; }
.hero-scrim {
  position: absolute; inset: 0; z-index: 1; pointer-events: none; opacity: 0; transition: opacity 1400ms var(--ease-fluid);
  background: linear-gradient(to bottom, rgba(12, 11, 11, 0.25) 0%, rgba(12, 11, 11, 0.1) 30%, rgba(12, 11, 11, 0.7) 68%, rgba(12, 11, 11, 0.92) 100%);
}
.hero::after { content: ""; position: absolute; inset: auto 0 0 0; height: 160px; background: linear-gradient(to bottom, rgba(12, 11, 11, 0), var(--bg)); pointer-events: none; }
.hero-inner {
  position: relative; z-index: 2; width: 100%; max-width: 980px; margin: 0 auto;
  display: flex; flex-direction: column; align-items: center; text-align: center; gap: 20px;
  padding: 120px var(--gutter) 112px;
}
.hero-title { font-size: 56px; line-height: 56px; }
.hero-sub { max-width: 480px; color: var(--text-body); }
.hero-proof { font-size: 12px; line-height: 16px; color: var(--text-dim); }

/* Sections */
.section { padding: 112px var(--gutter); max-width: 1264px; margin: 0 auto; }
.split { display: grid; gap: 40px; }
.split-head h2 { font-size: 44px; line-height: 46px; }
.split-head .body-soft { margin-top: 23px; }
.footnote { margin-top: 24px; font-size: 12px; line-height: 16px; color: var(--text-dim); }

/* Window mock (demo, terminal) */
.window { background: var(--card); border: 0; border-radius: 16px; overflow: hidden; }
.window-bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 16px;  }
.window-title { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 500; color: var(--text-body); }
.window-note { font-size: 12px; line-height: 16px; color: var(--text-dim); }
.window-foot { display: flex; flex-wrap: wrap; gap: 8px; padding: 12px 16px;  }

.prompt-tabs { display: flex; flex-wrap: wrap; gap: 4px; }
.prompt-tab { padding: 4px 10px; background: transparent; border: 0; border-radius: 9999px; font-size: 13px; line-height: 18px; font-weight: 500; color: var(--text-dim); cursor: pointer; transition: all 400ms var(--ease-fluid); }
.prompt-tab:hover { color: #fff; }
.prompt-tab:active { transform: scale(0.98); }
.prompt-tab[aria-selected="true"] { color: #fff; background: rgba(255, 255, 255, 0.08);  }

.chat { display: grid; gap: 12px; padding: 20px 16px; min-height: 300px; align-content: start; }
.bubble { max-width: 100%; border-radius: 12px; }
.bubble-user { justify-self: end; padding: 10px 14px; background: var(--card-raised); color: #e2e2e2; font-size: 14px; line-height: 21px; max-width: 80%; }
.bubble-model { justify-self: stretch; }
.answer-note { margin-top: 12px; color: var(--text-soft); }

.code { margin: 0; padding: 16px; overflow-x: auto; background: #0a0909; border: 0; border-radius: 12px; font-family: var(--font-mono); font-size: 13px; line-height: 20px; color: #e2e2e2; tab-size: 2; }
.code code { font-family: inherit; }
.code-small { font-size: 12px; line-height: 18px; }
.code-terminal { margin: 16px; white-space: pre; }
.code .line { display: block; opacity: 0; transform: translateY(6px); transition: opacity 500ms var(--ease-fluid), transform 500ms var(--ease-fluid); }
.code .line.is-in { opacity: 1; transform: translateY(0); }

.chip { display: inline-flex; align-items: center; gap: 8px; padding: 4px 12px; background: var(--card-raised); border: 0; border-radius: 9999px; font-size: 12px; line-height: 16px; color: var(--text-soft); }
.chip-model { font-family: var(--font-mono); font-weight: 500; color: #fff; background: rgba(255, 255, 255, 0.04); }
.dot { width: 8px; height: 8px; border-radius: 2px; background: var(--accent); }
.dot-rose { background: var(--rose); }
.dot-blue { background: var(--violet); }
.dot-green { background: var(--cyan); }
.tab-dot { display: inline-block; width: 6px; height: 6px; margin-right: 8px; border-radius: 9999px; background: var(--c, var(--accent)); vertical-align: 1px; }

/* Panels */
.panel { padding: 24px; background: var(--card); border: 0; border-radius: 16px; }
.panel h3 { margin-top: 16px; font-size: 15px; line-height: 20px; font-weight: 600; }
.panel h3 + p { margin-top: 8px; color: var(--text-soft); }
.panel-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.panel-foot { margin-top: 16px; color: var(--text-soft); }
.status { padding: 2px 8px; background: var(--card-raised); border: 0; border-radius: 9999px; font-size: 11px; line-height: 16px; color: var(--text-dim); }
.status-live { background: rgba(79, 139, 255, 0.14); color: var(--accent); }

.compare, .model-list, .metric-list { display: grid; gap: 12px; }
.model-list { max-width: 1120px; margin: 0 auto; }
.compare { grid-template-columns: 1fr; }
.lines { display: grid; gap: 8px; margin-top: 16px; }
.lines span { display: block; height: 8px; border-radius: 9999px; background: rgba(255, 255, 255, 0.12); }
.lines .gap { height: 8px; background: transparent; }
.compare .code { margin-top: 16px; }

.metric-pending { display: flex; align-items: center; gap: 12px; margin-top: 12px; font-size: 20px; line-height: 28px; color: var(--text-soft); }
.skeleton { display: inline-block; width: 64px; height: 24px; border-radius: 8px; background: var(--card-raised); animation: pulse 2s var(--ease-fluid) infinite; }
@keyframes pulse { 0%, 100% { opacity: 0.4; } 50% { opacity: 1; } }

/* Tagline reveal */
.tagline { padding-top: 160px; padding-bottom: 160px; }
.tagline-text { max-width: 980px; font-size: 40px; line-height: 44px; text-wrap: balance; }
.tagline-text .word { color: rgba(255, 255, 255, 0.28); transition: color 700ms var(--ease-fluid); }
.tagline-text .word.is-lit { color: #fff; }

/* FAQ, like the reference: grouped, numbered rows */
.faq { max-width: 736px; }
.faq-group { margin: 40px 0 12px; font-size: 11px; line-height: 16px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.09em; color: var(--text-soft); }
.faq-group:first-child { margin-top: 0; }
details { background: var(--card); border-radius: 12px; }
summary { display: flex; align-items: center; gap: 16px; padding: 20px 24px; font-size: 15px; line-height: 20px; font-weight: 500; cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary i { margin-left: auto; color: var(--text-dim); transition: transform 700ms var(--ease-fluid); }
details[open] summary i { transform: rotate(180deg); }
.faq-num { font-family: var(--font-mono); font-size: 12px; color: var(--text-dim); }
details p { padding: 0 24px 20px 56px; max-width: 600px; color: var(--text-soft); }
summary:hover .faq-num { color: var(--accent); }

/* Final CTA */
.cta { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 20px; padding-top: 160px; padding-bottom: 160px; }
.cta-title { font-size: 44px; line-height: 46px; }
.cta .body-soft { max-width: 420px; }

/* Footer */
.footer { max-width: 1264px; margin: 0 auto; padding: 80px var(--gutter) 128px;  }
.footer-top { display: grid; gap: 40px; }
.footer-tag { max-width: 360px; margin-top: 20px; font-size: 28px; line-height: 32px; color: var(--text-soft); }
.footer-cols { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.footer-cols h3 { font-size: 13px; line-height: 18px; font-weight: 500; }
.footer-cols ul { display: grid; gap: 12px; margin-top: 16px; font-size: 13px; line-height: 18px; color: var(--text-dim); }
.footer-cols a:hover { color: #fff; }
.footer-legal { margin-top: 64px; font-size: 12px; line-height: 16px; color: var(--text-dim); }

/* Centered section heads, mono eyebrows */
.center-head { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 16px; margin-bottom: 64px; }
.center-head h2 { max-width: 760px; font-size: 44px; line-height: 46px; }
.center-head .body-soft { max-width: 420px; }
.section-tight { padding-top: 64px; padding-bottom: 64px; }
.footnote.center { text-align: center; }
.text-button { display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px; background: transparent; border: 0; border-radius: 9999px; font-size: 13px; line-height: 18px; font-weight: 500; color: var(--text-soft); cursor: pointer; transition: all 400ms var(--ease-fluid); }
.text-button:hover { color: #fff;  }
.text-button:active { transform: scale(0.98); }

/* Panel art in the model cards */

/* Race: essay versus answer */
.race { display: grid; gap: 12px; }
.race-pane { display: flex; flex-direction: column; min-height: 360px; }
.race-body { flex: 1; padding: 16px; font-size: 13px; line-height: 20px; color: var(--text-soft); }
.race-body .code { margin: 12px 0; font-size: 12px; line-height: 18px; }
.race-body p + p { margin-top: 12px; }
.race-fast .race-body { color: #e2e2e2; }
.race-fast .race-body .answer-note { margin-top: 12px; color: var(--text-soft); }
.race-body .caret::after { content: ""; display: inline-block; width: 6px; height: 14px; margin-left: 2px; vertical-align: -2px; background: var(--text-dim); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.counter { font-family: var(--font-mono); font-size: 12px; line-height: 16px; color: var(--text-dim); font-variant-numeric: tabular-nums; }
.race-done { display: flex; align-items: center; gap: 8px; margin: 0 16px 16px; padding: 8px 12px; background: rgba(79, 139, 255, 0.12); border: 0; border-radius: 8px; font-size: 13px; line-height: 18px; color: var(--accent); opacity: 0; transform: translateY(8px); transition: opacity 700ms var(--ease-fluid), transform 700ms var(--ease-fluid); }
.race-done.is-visible { opacity: 1; transform: translateY(0); }
.race-foot { display: flex; justify-content: flex-end; margin-top: 16px; }
.race-foot .footnote { margin-top: 0; }

/* Marquee of example prompts */
.marquee { display: grid; gap: 12px; overflow: hidden; -webkit-mask-image: linear-gradient(to right, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(to right, transparent, #000 12%, #000 88%, transparent); }
.marquee-row { display: flex; gap: 12px; width: max-content; animation: marquee 60s linear infinite; }
.marquee-reverse { animation-direction: reverse; animation-duration: 70s; }
.marquee:hover .marquee-row { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }
.prompt-chip { display: inline-flex; align-items: center; gap: 8px; padding: 10px 16px; background: var(--card); border: 0; border-radius: 9999px; font-size: 14px; line-height: 20px; color: var(--text-body); white-space: nowrap; }
.prompt-chip::before { content: "›"; font-family: var(--font-mono); color: var(--c, var(--accent)); }

/* Get started: three commands */
.steps { display: grid; gap: 12px; max-width: 1120px; margin: 0 auto; }
.step { padding: 24px; background: var(--card); border: 0; border-radius: 16px; min-width: 0; }
.step-index { font-family: var(--font-mono); font-size: 13px; line-height: 18px; color: var(--accent); }
.step h3 { display: flex; align-items: center; gap: 8px; margin-top: 24px; font-size: 20px; line-height: 28px; font-weight: 600; }
.step-note { margin-top: 4px; color: var(--text-soft); }
.badge-live { padding: 2px 8px; border-radius: 4px; background: rgba(79, 139, 255, 0.14); color: var(--accent); font-family: var(--font-mono); font-size: 11px; line-height: 16px; font-weight: 500; }
.os-tabs { display: flex; gap: 4px; margin-top: 12px; }
.os-tabs button { padding: 2px 10px; background: transparent; border: 0; border-radius: 9999px; font-size: 12px; line-height: 16px; color: var(--text-dim); cursor: pointer; transition: all 400ms var(--ease-fluid); }
.os-tabs button:hover { color: #fff; }
.os-tabs button[aria-selected="true"] { color: #fff; background: rgba(255, 255, 255, 0.08);  }
.command { display: flex; align-items: center; gap: 8px; margin-top: 16px; padding: 12px; background: #0a0909; border: 0; border-radius: 12px; }
.prompt { font-family: var(--font-mono); font-size: 13px; color: var(--text-dim); }
.command code { flex: 1; min-width: 0; overflow-x: auto; white-space: nowrap; font-family: var(--font-mono); font-size: 13px; line-height: 20px; color: #fff; scrollbar-width: none; }
.command code::-webkit-scrollbar { display: none; }
.copy { flex: none; padding: 4px 10px; background: var(--card-raised); border: 0; border-radius: 8px; font-family: var(--font-mono); font-size: 12px; line-height: 16px; color: var(--text-soft); cursor: pointer; transition: all 400ms var(--ease-fluid); }
.copy:hover { color: #fff;  }
.copy:active { transform: scale(0.98); }
.copy.is-copied { color: var(--accent);  }

/* Will it run on my machine */
.fit { display: grid; gap: 16px; padding: 24px; background: var(--card); border: 0; border-radius: 16px; }
.fit-controls { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 12px 16px; }
.fit-controls label { font-size: 13px; line-height: 18px; font-weight: 500; color: var(--text-soft); }
.fit select { padding: 10px 12px; background: var(--card-raised); border: 0; border-radius: 8px; color: #fff; font: inherit; font-size: 14px; }
.fit-result { padding-top: 16px;  }
.fit-verdict { font-family: var(--font-display); font-size: 32px; line-height: 36px; letter-spacing: -0.02em; }
.fit-detail { margin-top: 8px; color: var(--text-soft); }
.fit-meter { height: 8px; margin-top: 20px; border-radius: 9999px; background: var(--card-raised); overflow: hidden; }
.fit-meter span { display: block; height: 100%; width: 0; border-radius: inherit; background: var(--accent); transition: width 900ms var(--ease-fluid); }
.fit-meter-label { margin-top: 8px; font-size: 12px; line-height: 16px; color: var(--text-dim); }

/* Memory grid (will it run) */
.memgrid { display: grid; grid-template-columns: repeat(16, 1fr); gap: 4px; margin-top: 20px; }
.memgrid span { aspect-ratio: 1; border-radius: 3px; background: var(--card-raised); transform: scale(0.6); opacity: 0; transition: background-color 600ms var(--ease-fluid), transform 600ms var(--ease-fluid), opacity 600ms var(--ease-fluid); }
.memgrid span.is-in { transform: scale(1); opacity: 1; }
.memgrid span.is-apps { background: var(--violet); }
.memgrid span.is-model { background: var(--accent); }
.memgrid span.is-over { background: var(--rose); }
.memlegend { display: flex; flex-wrap: wrap; gap: 8px 16px; margin: 16px 0 0; font-size: 12px; line-height: 16px; color: var(--text-soft); }
.memlegend li { display: inline-flex; align-items: center; gap: 8px; }
.sw { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.sw-model { background: var(--accent); }
.sw-apps { background: var(--violet); }
.sw-free { background: var(--card-raised); }

/* Model rows */
.model-rows { display: grid; }
.model-row { display: flex; gap: 20px; padding: 28px 0;  }
.model-mark { flex: none; width: 56px; height: 56px; object-fit: contain; }
.mark-blue { filter: hue-rotate(38deg) saturate(1.1); }
.mark-green { filter: hue-rotate(-32deg) saturate(1.1); }
.model-body h3 { font-size: 36px; line-height: 40px; letter-spacing: -0.02em; }
.model-body p { margin-top: 8px; color: var(--text-soft); max-width: 480px; }
.model-body .model-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 16px; }

/* Spec table */
.spec { margin: 0; }
.spec > div { display: grid; gap: 4px; padding: 20px 0;  }
.spec dt { font-size: 13px; line-height: 18px; color: var(--text-dim); }
.spec dd { margin: 0; font-size: 15px; line-height: 22px; color: #fff; }
.pending { display: inline-flex; align-items: center; gap: 12px; color: var(--text-soft); }

/* Ask bar pinned to the bottom, with a floating answer panel */
.ask { position: fixed; left: 0; right: 0; bottom: 16px; z-index: 40; display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 0 16px; pointer-events: none; opacity: 0; transform: translateY(24px); transition: opacity 800ms var(--ease-fluid), transform 800ms var(--ease-fluid); }
.ask.is-visible { opacity: 1; transform: translateY(0); }
.ask > * { pointer-events: auto; }
.ask-bar { display: flex; align-items: center; gap: 8px; width: 100%; max-width: 680px; padding: 8px; background: rgba(28, 27, 27, 0.82); backdrop-filter: blur(24px); border: 0; border-radius: 9999px; box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45); }
.ask-bar:focus-within { box-shadow: 0 0 0 2px rgba(79, 139, 255, 0.55), 0 12px 40px rgba(0, 0, 0, 0.45); }
.ask-input { flex: 1; min-width: 0; padding: 8px 4px; background: transparent; border: 0; outline: none; color: #fff; font: inherit; font-size: 15px; line-height: 24px; }
.ask-input::placeholder { color: var(--text-dim); }
.ask-shuffle, .ask-send { flex: none; display: grid; place-items: center; width: 40px; height: 40px; border: 0; border-radius: 9999px; font-size: 18px; cursor: pointer; transition: all 400ms var(--ease-fluid); }
.ask-shuffle { background: transparent; color: var(--text-soft); }
.ask-shuffle:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }
.ask-send { background: #fcfcfc; color: #1b1b1b; }
.ask-send:hover { transform: translateY(-1px); background: #e8e8e8; }
.ask-send:active, .ask-shuffle:active { transform: scale(0.96); }
.ask-panel { width: 100%; max-width: 680px; max-height: min(52vh, 460px); display: flex; flex-direction: column; background: rgba(21, 20, 20, 0.94); backdrop-filter: blur(24px); border: 0; border-radius: 16px; box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5); overflow: hidden; }
.ask-panel[hidden] { display: none; }
.ask-panel-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px 10px 16px;  }
.ask-panel-title { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: 12px; line-height: 16px; color: #fff; }
.ask-example { margin-left: 4px; font-family: var(--font-sans); color: var(--text-dim); }
.ask-close { display: grid; place-items: center; width: 28px; height: 28px; background: transparent; border: 0; border-radius: 8px; color: var(--text-soft); cursor: pointer; transition: all 400ms var(--ease-fluid); }
.ask-close:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }
.ask-panel-body { display: grid; gap: 12px; padding: 16px; overflow-y: auto; align-content: start; }
.ask-panel-foot { padding: 10px 16px 12px; font-size: 12px; line-height: 16px; color: var(--text-dim); }
.ask-hint { margin-top: 12px; color: var(--text-soft); }
.ask-suggestions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.ask-suggestions button { padding: 6px 12px; background: var(--card-raised); border: 0; border-radius: 9999px; font-size: 13px; line-height: 18px; color: var(--text-body); cursor: pointer; transition: all 400ms var(--ease-fluid); }
.ask-suggestions button:hover { color: #fff;  }

/* Social icon */
.icon-link { display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 9999px; font-size: 18px; color: var(--text-dim); transition: color 300ms var(--ease-fluid), background-color 300ms var(--ease-fluid); }
.icon-link:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }
.icon-link[hidden] { display: none; }
.icon-link-large { width: 48px; height: 48px; font-size: 26px; color: #fff; }
.footer-x { display: inline-flex; align-items: center; gap: 8px; }
.footer-x[hidden] { display: none; }

/* Simple pages */
.page { max-width: 680px; margin: 0 auto; padding: 140px var(--gutter) 80px; }
.page h1 { font-family: var(--font-display); font-size: 48px; line-height: 52px; letter-spacing: -0.02em; }
.page h2 { margin-top: 32px; font-size: 16px; line-height: 24px; font-weight: 600; }
.page p { margin-top: 12px; color: var(--text-soft); font-size: 14px; line-height: 22px; }
.page a { color: #fff; text-decoration: underline; text-underline-offset: 4px; }

@media (min-width: 768px) {
  :root { --gutter: 28px; }
  .nav { display: flex; }
  .menu-toggle { display: none; }
  .hero-title { font-size: 80px; line-height: 80px; white-space: nowrap; }
  .hero-sub { max-width: 820px; font-size: 17px; line-height: 26px; }
  .section { padding-top: 160px; padding-bottom: 160px; }
  .section-tight { padding-top: 80px; padding-bottom: 80px; }
  .split { grid-template-columns: minmax(0, 424px) minmax(0, 1fr); gap: 80px; align-items: start; }
  .split-head h2 { font-size: 64px; line-height: 66.5px; }
  .race { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .spec > div { grid-template-columns: 220px 1fr; gap: 24px; }
  .memgrid { grid-template-columns: repeat(16, 1fr); }
  .center-head h2 { font-size: 64px; line-height: 66.5px; }
  .center-head { margin-bottom: 80px; }
  .fit-controls { grid-template-columns: auto 1fr; }
  .tagline-text { font-size: 56px; line-height: 60px; }
  .cta-title { font-size: 64px; line-height: 66.5px; }
  .footer-top { grid-template-columns: 1fr auto; }
  .footer-cols { grid-template-columns: repeat(3, auto); gap: 64px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rise, .reveal { opacity: 1; transform: none; filter: none; animation: none; transition: none; }
  .tagline-text .word { color: #fff; transition: none; }
  .code .line { opacity: 1; transform: none; transition: none; }
  .skeleton { animation: none; }
  .marquee-row { animation: none; flex-wrap: wrap; width: auto; }
  .race-body .caret::after { animation: none; }
  .ask { transition: none; }
}