/* ==========================================================================
   AI Brain — Homepage v3 design system
   Editorial deep-tech: ink background, one luminous accent, big type.
   ========================================================================== */

/* Self-hosted fonts (SIL OFL): Geist, Geist Mono, Instrument Serif — latin subset */
@font-face { font-family: 'Geist'; font-style: normal; font-weight: 100 900; font-display: swap; src: url('/fonts/geist-latin.woff2') format('woff2'); }
@font-face { font-family: 'Geist Mono'; font-style: normal; font-weight: 100 900; font-display: swap; src: url('/fonts/geist-mono-latin.woff2') format('woff2'); }
@font-face { font-family: 'Instrument Serif'; font-style: italic; font-weight: 400; font-display: swap; src: url('/fonts/instrument-serif-italic-latin.woff2') format('woff2'); }

:root {
  --ink: #08090b;
  --ink-2: #0e1013;
  --ink-3: #15181d;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #f2f1ec;
  --text-2: #a7a9ae;
  --text-3: #868990;
  --accent: #c8ff3d;
  --accent-ink: #0b0d02;
  --accent-soft: rgba(200, 255, 61, 0.12);
  --violet: #8b7bff;
  --violet-soft: rgba(139, 123, 255, 0.14);
  --danger: #ff6b5b;

  --font-sans: 'Geist', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-mono: 'Geist Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --radius: 18px;
  --radius-sm: 10px;
  --max: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
  --ease: cubic-bezier(0.2, 0.7, 0.1, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100vh;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
::selection { background: var(--accent); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.mono { font-family: var(--font-mono); }
.serif { font-family: var(--font-serif); font-style: italic; font-weight: 400; letter-spacing: -0.01em; }
.accent { color: var(--accent); }

/* Grain + grid backdrop */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 20%, transparent 75%);
  opacity: 0.5;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 20px; border-radius: 999px;
  font-size: 0.93rem; font-weight: 500; letter-spacing: -0.005em;
  border: 1px solid transparent; cursor: pointer; white-space: nowrap;
  transition: transform 0.25s var(--ease), background 0.25s, border-color 0.25s, color 0.25s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: #d8ff70; }
.btn-ghost { border-color: var(--line-strong); color: var(--text); background: rgba(255,255,255,0.02); }
.btn-ghost:hover { border-color: var(--text-2); background: rgba(255,255,255,0.05); }
.btn-sm { height: 36px; padding: 0 16px; font-size: 0.86rem; }
.btn .arrow { transition: transform 0.25s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(8, 9, 11, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 24px; }
.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; font-size: 1.05rem; letter-spacing: -0.02em; }
.logo-mark { width: 26px; height: 26px; }
.nav-links { display: flex; gap: 4px; }
.nav-links a {
  padding: 8px 14px; border-radius: 999px; font-size: 0.9rem; color: var(--text-2);
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.nav-cta { display: flex; align-items: center; gap: 10px; }
.menu-btn {
  display: none; width: 42px; height: 42px; border-radius: 999px;
  border: 1px solid var(--line-strong); background: transparent; cursor: pointer;
  align-items: center; justify-content: center;
}
.menu-btn span, .menu-btn span::before, .menu-btn span::after {
  display: block; width: 16px; height: 1.5px; background: var(--text); position: relative; transition: transform 0.3s var(--ease), background 0.2s;
}
.menu-btn span::before, .menu-btn span::after { content: ""; position: absolute; left: 0; }
.menu-btn span::before { top: -5px; }
.menu-btn span::after { top: 5px; }
.nav.open .menu-btn span { background: transparent; }
.nav.open .menu-btn span::before { transform: translateY(5px) rotate(45deg); }
.nav.open .menu-btn span::after { transform: translateY(-5px) rotate(-45deg); }

.mobile-panel {
  display: none; position: fixed; inset: 68px 0 0 0; z-index: 99;
  background: rgba(8, 9, 11, 0.97); backdrop-filter: blur(10px);
  padding: 24px var(--gutter) 40px; flex-direction: column; gap: 4px;
  opacity: 0; transform: translateY(-8px); transition: opacity 0.25s, transform 0.25s var(--ease);
  overflow-y: auto;
}
.mobile-panel a.m-link {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 4px; border-bottom: 1px solid var(--line); font-size: 1.35rem; letter-spacing: -0.02em;
}
.mobile-panel a.m-link span { color: var(--text-3); font-family: var(--font-mono); font-size: 0.78rem; }
.mobile-panel .btn { margin-top: 24px; height: 52px; }
.nav.open + .mobile-panel { opacity: 1; transform: none; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 140px 0 72px; min-height: 100svh; display: flex; align-items: center; overflow: hidden; }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(ellipse 60% 50% at 70% 45%, transparent 0%, var(--ink) 85%),
              linear-gradient(to bottom, transparent 70%, var(--ink));
}
.hero .wrap { position: relative; z-index: 1; width: 100%; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 14px 6px 6px; border: 1px solid var(--line-strong); border-radius: 999px;
  font-size: 0.82rem; color: var(--text-2); background: rgba(8,9,11,0.6); backdrop-filter: blur(6px);
}
.eyebrow b {
  background: var(--accent-soft); color: var(--accent); font-weight: 500;
  padding: 2px 10px; border-radius: 999px; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.04em;
}
.hero h1 {
  margin: 28px 0 24px;
  font-size: clamp(2.9rem, 8.4vw, 7.2rem);
  line-height: 0.95; letter-spacing: -0.045em; font-weight: 600;
  max-width: 11ch;
}
.hero h1 .serif { font-size: 1.06em; color: var(--accent); }
.hero-sub { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--text-2); max-width: 46ch; line-height: 1.55; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.hero-actions .btn { height: 50px; padding: 0 24px; font-size: 0.98rem; }
.hero-meta {
  margin-top: 64px; display: flex; flex-wrap: wrap; gap: 12px 32px;
  font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-3); letter-spacing: 0.04em; text-transform: uppercase;
}
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta i { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); }

/* ---------- Sections ---------- */
.section { padding: clamp(80px, 12vw, 140px) 0; position: relative; }
.section + .section { border-top: 1px solid var(--line); }
.kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-3);
}
.kicker::before { content: ""; width: 18px; height: 1px; background: var(--accent); }
.h2 {
  font-size: clamp(2rem, 4.6vw, 3.6rem); line-height: 1.02; letter-spacing: -0.035em; font-weight: 600;
  margin-top: 18px; max-width: 18ch;
}
.h2 .serif { color: var(--accent); }
.lead { color: var(--text-2); font-size: 1.08rem; max-width: 52ch; margin-top: 18px; }
.sec-head { display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px; align-items: end; margin-bottom: 64px; }
.sec-head .lead { margin-top: 0; justify-self: end; }

/* ---------- Marquee strip ---------- */
.strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); overflow: hidden; padding: 20px 0; background: var(--ink-2); }
.strip-track { display: flex; gap: 56px; width: max-content; animation: marquee 40s linear infinite; }
.strip-track span { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-3); letter-spacing: 0.06em; text-transform: uppercase; display: inline-flex; align-items: center; gap: 56px; }
.strip-track span::after { content: "✦"; color: var(--accent); opacity: 0.7; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Problem / solution ---------- */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.compare-col { background: var(--ink); padding: clamp(28px, 4vw, 48px); }
.compare-col h3 { font-size: 1.35rem; letter-spacing: -0.02em; font-weight: 600; margin: 14px 0 24px; }
.tag { display: inline-block; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; padding: 4px 10px; border-radius: 999px; }
.tag-bad { color: var(--danger); background: rgba(255, 107, 91, 0.1); }
.tag-good { color: var(--accent); background: var(--accent-soft); }
.decay { display: grid; gap: 10px; }
.decay-row { display: grid; grid-template-columns: 90px 1fr 48px; gap: 14px; align-items: center; font-size: 0.85rem; color: var(--text-2); }
.decay-row .mono { font-size: 0.78rem; color: var(--text-3); }
.bar { height: 8px; border-radius: 99px; background: var(--ink-3); overflow: hidden; }
.bar i { display: block; height: 100%; border-radius: 99px; width: 0; transition: width 1.4s var(--ease); }
.compare-col.bad .bar i { background: linear-gradient(90deg, var(--danger), rgba(255,107,91,0.4)); }
.compare-col.good .bar i { background: linear-gradient(90deg, var(--accent), #8fd61a); }
.in .bar i { width: var(--w); }
.compare-note { margin-top: 24px; font-size: 0.92rem; color: var(--text-2); }

/* ---------- Bento ---------- */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.card {
  position: relative; background: var(--ink-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; overflow: hidden; transition: border-color 0.3s, transform 0.4s var(--ease);
}
.card:hover { border-color: var(--line-strong); }
.card::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity 0.3s;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 50%), rgba(200,255,61,0.07), transparent 45%);
}
.card:hover::before { opacity: 1; }
.card h3 { font-size: 1.2rem; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 8px; }
.card p { color: var(--text-2); font-size: 0.95rem; }
.card .num { font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-3); margin-bottom: 40px; display: block; }
.b-wide { grid-column: span 4; }
.b-tall { grid-column: span 2; grid-row: span 2; display: flex; flex-direction: column; }
.b-third { grid-column: span 2; }
.b-half { grid-column: span 3; }
.mini-graph { margin: auto 0 0; padding-top: 24px; }
.mini-graph svg { width: 100%; height: auto; }
.mini-graph .edge { stroke: var(--line-strong); stroke-width: 1; }
.mini-graph .edge.hot { stroke: var(--accent); stroke-dasharray: 4 4; animation: dash 1.6s linear infinite; }
.mini-graph .node { fill: var(--ink-3); stroke: var(--text-3); }
.mini-graph .node.hot { fill: var(--accent); stroke: none; }
@keyframes dash { to { stroke-dashoffset: -16; } }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.chip { font-family: var(--font-mono); font-size: 0.74rem; padding: 5px 10px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--text-2); }

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stat { padding: 40px 28px; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat-val { font-size: clamp(2.4rem, 5vw, 4rem); font-weight: 600; letter-spacing: -0.05em; line-height: 1; }
.stat-val small { font-size: 0.45em; color: var(--text-2); margin-left: 4px; letter-spacing: -0.02em; }
.stat-label { margin-top: 14px; color: var(--text-2); font-size: 0.92rem; }
.stat-label .mono { display: block; font-size: 0.72rem; color: var(--text-3); margin-top: 4px; letter-spacing: 0.04em; text-transform: uppercase; }

/* ---------- Steps / pipeline ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: s; }
.step { padding: 28px 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--ink-2); position: relative; }
.step::after {
  content: ""; position: absolute; top: 50%; right: -13px; width: 10px; height: 10px;
  border-top: 1px solid var(--text-3); border-right: 1px solid var(--text-3); transform: translateY(-50%) rotate(45deg);
}
.step:last-child::after { display: none; }
.step .mono { font-size: 0.72rem; color: var(--accent); letter-spacing: 0.08em; }
.step h3 { font-size: 1.1rem; font-weight: 600; margin: 32px 0 6px; letter-spacing: -0.015em; }
.step p { font-size: 0.9rem; color: var(--text-2); }

/* ---------- Agents ---------- */
.agents { display: grid; grid-template-columns: 340px 1fr; gap: 24px; }
.agent-list { display: flex; flex-direction: column; gap: 4px; }
.agent-btn {
  text-align: left; padding: 18px 20px; border-radius: var(--radius-sm); border: 1px solid transparent;
  background: transparent; cursor: pointer; display: grid; grid-template-columns: 28px 1fr; gap: 4px 12px; align-items: center;
  transition: background 0.2s, border-color 0.2s;
}
.agent-btn .i { font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-3); }
.agent-btn strong { font-weight: 500; font-size: 1.02rem; letter-spacing: -0.01em; }
.agent-btn small { grid-column: 2; color: var(--text-3); font-size: 0.84rem; }
.agent-btn:hover { background: rgba(255,255,255,0.03); }
.agent-btn[aria-selected="true"] { background: var(--ink-2); border-color: var(--line-strong); }
.agent-btn[aria-selected="true"] .i { color: var(--accent); }
.agent-panel { border: 1px solid var(--line); border-radius: var(--radius); background: var(--ink-2); overflow: hidden; display: flex; flex-direction: column; }
.agent-panel-head { padding: 28px 28px 0; }
.agent-panel-head h3 { font-size: 1.6rem; font-weight: 600; letter-spacing: -0.03em; }
.agent-panel-head p { color: var(--text-2); margin-top: 8px; max-width: 54ch; }
.agent-panel ul { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; padding: 24px 28px; }
.agent-panel li { font-size: 0.88rem; color: var(--text-2); padding-left: 18px; position: relative; }
.agent-panel li::before { content: ""; position: absolute; left: 0; top: 0.6em; width: 8px; height: 1px; background: var(--accent); }

/* ---------- Terminal / code ---------- */
.term { background: #050607; border-top: 1px solid var(--line); font-family: var(--font-mono); font-size: 0.84rem; line-height: 1.75; }
.term-bar { display: flex; align-items: center; gap: 8px; padding: 12px 18px; border-bottom: 1px solid var(--line); color: var(--text-3); font-size: 0.75rem; }
.term-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--ink-3); border: 1px solid var(--line-strong); }
.term-bar em { margin-left: auto; font-style: normal; }
.agent-panel .term { margin-top: auto; }
.term pre { padding: 20px 22px; overflow-x: auto; color: var(--text-2); min-height: 170px; white-space: pre; }
.t-k { color: var(--violet); } .t-s { color: var(--accent); } .t-c { color: var(--text-3); } .t-ok { color: var(--accent); }
.caret { display: inline-block; width: 8px; height: 1.1em; vertical-align: -2px; background: var(--accent); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.sdk { display: grid; grid-template-columns: 1fr 1.25fr; gap: 56px; align-items: center; }
.sdk-card { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #050607; }
.sdk-card .term { border-top: 0; }
.sdk-tabs { display: flex; gap: 4px; margin-left: 8px; }
.sdk-tabs button { background: none; border: 0; color: var(--text-3); font-family: var(--font-mono); font-size: 0.75rem; padding: 4px 10px; border-radius: 6px; cursor: pointer; }
.sdk-tabs button[aria-selected="true"] { background: var(--ink-3); color: var(--text); }
.copy-btn { margin-left: auto; background: none; border: 1px solid var(--line-strong); color: var(--text-2); font-family: var(--font-mono); font-size: 0.72rem; padding: 4px 10px; border-radius: 6px; cursor: pointer; }
.copy-btn:hover { color: var(--text); }
.check-list { list-style: none; margin-top: 32px; display: grid; gap: 14px; }
.check-list li { display: flex; gap: 12px; color: var(--text-2); }
.check-list li::before { content: "→"; color: var(--accent); font-family: var(--font-mono); }

/* ---------- Calculator ---------- */
.calc { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.calc-in { padding: clamp(28px, 4vw, 48px); background: var(--ink-2); display: grid; gap: 36px; align-content: center; }
.calc-out { padding: clamp(28px, 4vw, 48px); display: grid; gap: 28px; align-content: center; background: linear-gradient(160deg, rgba(200,255,61,0.05), transparent 60%); }
.field label { display: flex; justify-content: space-between; font-size: 0.92rem; color: var(--text-2); margin-bottom: 14px; }
.field output { font-family: var(--font-mono); color: var(--text); }
input[type=range] { -webkit-appearance: none; appearance: none; width: 100%; height: 4px; border-radius: 99px; background: linear-gradient(90deg, var(--accent) var(--p, 50%), var(--ink-3) var(--p, 50%)); outline: none; }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 22px; height: 22px; border-radius: 50%; background: var(--text); border: 4px solid var(--ink); box-shadow: 0 0 0 1px var(--accent); cursor: grab; }
input[type=range]::-moz-range-thumb { width: 16px; height: 16px; border-radius: 50%; background: var(--text); border: 4px solid var(--ink); box-shadow: 0 0 0 1px var(--accent); cursor: grab; }
.out-row { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.out-row:last-child { border: 0; padding-bottom: 0; }
.out-row span { color: var(--text-2); font-size: 0.92rem; }
.out-row strong { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 600; letter-spacing: -0.04em; font-variant-numeric: tabular-nums; }
.out-row strong.bad { color: var(--danger); }
.out-row strong.good { color: var(--accent); }
.calc-foot { font-size: 0.78rem; color: var(--text-3); font-family: var(--font-mono); }

/* ---------- Demo chat ---------- */
.demo { border: 1px solid var(--line); border-radius: var(--radius); background: var(--ink-2); overflow: hidden; max-width: 860px; margin: 0 auto; }
.demo-head { display: flex; align-items: center; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--line); font-size: 0.9rem; }
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 0 rgba(200,255,61,0.6); animation: pulse 2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 10px rgba(200,255,61,0); } 100% { box-shadow: 0 0 0 0 rgba(200,255,61,0); } }
.demo-head .mono { margin-left: auto; color: var(--text-3); font-size: 0.74rem; }
.chat { height: 360px; overflow-y: auto; padding: 24px 20px; display: flex; flex-direction: column; gap: 14px; scroll-behavior: smooth; }
.msg { max-width: 82%; white-space: pre-line; padding: 12px 16px; border-radius: 16px; font-size: 0.94rem; line-height: 1.55; animation: rise 0.35s var(--ease); }
.msg.ai { background: var(--ink-3); border: 1px solid var(--line); border-bottom-left-radius: 4px; color: var(--text); }
.msg.user { align-self: flex-end; background: var(--accent); color: var(--accent-ink); border-bottom-right-radius: 4px; }
.msg .mem { display: block; margin-top: 8px; font-family: var(--font-mono); font-size: 0.72rem; color: var(--accent); }
.msg.typing { color: var(--text-3); }
.msg.typing i { display: inline-block; width: 5px; height: 5px; margin: 0 2px; border-radius: 50%; background: currentColor; animation: bounce 1s infinite; }
.msg.typing i:nth-child(2) { animation-delay: 0.15s; } .msg.typing i:nth-child(3) { animation-delay: 0.3s; }
@keyframes bounce { 50% { transform: translateY(-4px); } }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } }
.suggest { display: flex; gap: 8px; padding: 0 20px 16px; overflow-x: auto; scrollbar-width: none; }
.suggest::-webkit-scrollbar { display: none; }
.suggest button { flex-shrink: 0; background: transparent; border: 1px solid var(--line-strong); color: var(--text-2); padding: 7px 14px; border-radius: 999px; font-size: 0.84rem; cursor: pointer; transition: border-color 0.2s, color 0.2s; }
.suggest button:hover { border-color: var(--accent); color: var(--text); }
.chat-form { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--line); }
.chat-form input { flex: 1; min-width: 0; height: 46px; padding: 0 16px; border-radius: 999px; background: var(--ink); border: 1px solid var(--line); outline: none; transition: border-color 0.2s; }
.chat-form input:focus { border-color: var(--accent); }

/* ---------- FAQ ---------- */
.faq { display: grid; grid-template-columns: 1fr 1.6fr; gap: 56px; }
.faq-list { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 24px 0; display: flex; justify-content: space-between; gap: 24px; font-size: 1.1rem; font-weight: 500; letter-spacing: -0.015em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--font-mono); color: var(--text-3); font-size: 1.2rem; transition: transform 0.3s var(--ease), color 0.2s; }
.faq details[open] summary::after { transform: rotate(45deg); color: var(--accent); }
.faq details p { color: var(--text-2); padding: 0 40px 24px 0; max-width: 64ch; }

/* ---------- CTA ---------- */
.cta {
  position: relative; border-radius: 28px; padding: clamp(40px, 7vw, 96px) clamp(24px, 6vw, 80px);
  background: var(--accent); color: var(--accent-ink); overflow: hidden;
}
.cta::after {
  content: ""; position: absolute; right: -10%; top: -40%; width: 60%; aspect-ratio: 1; border-radius: 50%;
  border: 1px solid rgba(11,13,2,0.15); box-shadow: 0 0 0 60px rgba(11,13,2,0.03), 0 0 0 120px rgba(11,13,2,0.025);
  pointer-events: none;
}
.cta-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: end; }
.cta h2 { font-size: clamp(2.2rem, 5.5vw, 4.4rem); line-height: 0.98; letter-spacing: -0.045em; font-weight: 600; }
.cta h2 .serif { font-size: 1.05em; }
.cta p { margin-top: 18px; font-size: 1.05rem; opacity: 0.75; max-width: 40ch; }
.wl-form { display: grid; gap: 10px; }
.wl-form input, .wl-form select {
  height: 54px; padding: 0 20px; border-radius: 14px; border: 1px solid rgba(11,13,2,0.18);
  background: rgba(255,255,255,0.45); color: var(--accent-ink); outline: none; font-size: 0.98rem;
  transition: border-color 0.2s, background 0.2s;
}
.wl-form input::placeholder { color: rgba(11,13,2,0.55); }
.wl-form input:focus, .wl-form select:focus { border-color: var(--accent-ink); background: rgba(255,255,255,0.7); }
.wl-form select { appearance: none; -webkit-appearance: none; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%230b0d02' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 20px center; }
.wl-form .btn { height: 54px; border-radius: 14px; background: var(--accent-ink); color: var(--accent); font-size: 1rem; }
.wl-form .btn:hover { background: #1a1d0a; }
.wl-note { font-size: 0.82rem; opacity: 0.65; margin-top: 4px; }
.wl-ok { display: none; padding: 16px 18px; border-radius: 14px; background: rgba(11,13,2,0.9); color: var(--accent); font-size: 0.95rem; }
.wl-ok.show { display: block; animation: rise 0.4s var(--ease); }

/* ---------- Footer ---------- */
.footer { padding: 80px 0 40px; }
.foot-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 40px; padding-bottom: 56px; border-bottom: 1px solid var(--line); }
.foot-grid .foot-h { font-family: var(--font-mono); font-size: 0.72rem; font-weight: 400; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-3); margin-bottom: 18px; }
.foot-grid ul { list-style: none; display: grid; gap: 10px; }
.foot-grid ul a { color: var(--text-2); font-size: 0.93rem; transition: color 0.2s; }
.foot-grid ul a:hover { color: var(--accent); }
.foot-brand p { color: var(--text-2); font-size: 0.93rem; margin: 16px 0 20px; max-width: 34ch; }
.foot-brand a.mail { display: block; padding: 6px 0; color: var(--text-2); font-size: 0.9rem; font-family: var(--font-mono); }
.foot-brand a.mail:hover { color: var(--accent); }
.foot-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; padding-top: 28px; font-size: 0.82rem; color: var(--text-3); }
.msme { display: inline-flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.msme b { font-family: var(--font-mono); font-weight: 400; color: var(--text-2); }
.wordmark { font-size: clamp(4rem, 19vw, 17rem); font-weight: 600; letter-spacing: -0.07em; line-height: 0.8; color: transparent; -webkit-text-stroke: 1px var(--line-strong); margin-top: 56px; user-select: none; white-space: nowrap; overflow: hidden; }

/* ---------- Reveal ---------- */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
.d1 { transition-delay: 0.08s; } .d2 { transition-delay: 0.16s; } .d3 { transition-delay: 0.24s; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .menu-btn { display: inline-flex; }
  .mobile-panel { display: flex; pointer-events: none; }
  .nav.open + .mobile-panel { pointer-events: auto; }
  .sec-head { grid-template-columns: 1fr; gap: 0; }
  .sec-head .lead { justify-self: start; margin-top: 18px; }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .b-wide, .b-half { grid-column: span 2; }
  .b-tall { grid-column: span 2; grid-row: auto; }
  .b-third { grid-column: span 1; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step::after { display: none; }
  .agents { grid-template-columns: 1fr; }
  .agent-list { flex-direction: row; overflow-x: auto; scrollbar-width: none; }
  .agent-list::-webkit-scrollbar { display: none; }
  .agent-btn { flex-shrink: 0; grid-template-columns: auto; }
  .agent-btn small, .agent-btn .i { display: none; }
  .sdk, .faq, .cta-grid { grid-template-columns: 1fr; gap: 40px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .foot-brand { grid-column: 1 / -1; }
}
@media (max-width: 680px) {
  .nav-cta .btn { display: none; }
  .hero { padding-top: 120px; }
  .hero-actions .btn { flex: 1 1 100%; }
  .hero-meta { margin-top: 48px; gap: 10px 20px; }
  .compare, .calc { grid-template-columns: 1fr; }
  .bento { grid-template-columns: 1fr; }
  .b-wide, .b-half, .b-tall, .b-third { grid-column: auto; }
  .steps { grid-template-columns: 1fr; }
  .agent-panel ul { grid-template-columns: 1fr; }
  .stat { padding: 28px 16px; }
  .msg { max-width: 92%; }
  .chat { height: 320px; }
  .decay-row { grid-template-columns: 70px 1fr 40px; gap: 10px; }
  .faq details p { padding-right: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* ==========================================================================
   v3.1 — Visual polish layer (aurora, console, gradient borders, shine)
   ========================================================================== */

/* Film grain over everything (very subtle) */
body::after {
  content: ""; position: fixed; inset: 0; z-index: 200; pointer-events: none; opacity: 0.045; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Cursor spotlight (desktop) */
.cursor-glow {
  position: fixed; left: 0; top: 0; width: 560px; height: 560px; margin: -280px 0 0 -280px; border-radius: 50%;
  pointer-events: none; z-index: 0; opacity: 0; transition: opacity 0.4s;
  background: radial-gradient(circle, rgba(200,255,61,0.07), transparent 60%);
  transform: translate3d(var(--cx, -999px), var(--cy, -999px), 0);
}
body.has-pointer .cursor-glow { opacity: 1; }
main, .footer { position: relative; z-index: 1; }

/* ---------- Hero ---------- */
.aurora { position: absolute; inset: -20% -10% 0; z-index: 0; pointer-events: none; filter: blur(70px); opacity: 0.9; }
.aurora i { position: absolute; border-radius: 50%; mix-blend-mode: screen; animation: drift 22s ease-in-out infinite alternate; }
.aurora i:nth-child(1) { width: 46vw; height: 46vw; right: 2%; top: 8%; background: radial-gradient(circle, rgba(200,255,61,0.22), transparent 65%); }
.aurora i:nth-child(2) { width: 38vw; height: 38vw; right: 24%; top: 38%; background: radial-gradient(circle, rgba(139,123,255,0.28), transparent 65%); animation-duration: 28s; animation-delay: -6s; }
.aurora i:nth-child(3) { width: 30vw; height: 30vw; right: -6%; top: 52%; background: radial-gradient(circle, rgba(56,224,200,0.18), transparent 65%); animation-duration: 34s; animation-delay: -12s; }
@keyframes drift {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(-6vw, 4vh, 0) scale(1.12); }
  100% { transform: translate3d(4vw, -3vh, 0) scale(0.94); }
}
.hero-canvas { z-index: 0; opacity: 0.85; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr); gap: 56px; align-items: center; }
.hero h1 { max-width: none; }

.shimmer {
  background: linear-gradient(100deg, var(--accent) 0%, var(--accent) 35%, #f6ffd6 50%, var(--accent) 65%, var(--accent) 100%);
  background-size: 250% 100%;
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  animation: shimmer 5.5s ease-in-out infinite;
  padding-right: 0.06em; /* italic overhang */
  filter: drop-shadow(0 0 28px rgba(200,255,61,0.25));
}
@keyframes shimmer { 0%, 20% { background-position: 100% 0; } 60%, 100% { background-position: 0% 0; } }

.eyebrow { box-shadow: 0 0 0 1px rgba(200,255,61,0.06), 0 8px 30px -12px rgba(200,255,61,0.35); }

/* Primary button: glow + light sweep */
.btn-primary { box-shadow: 0 0 0 1px rgba(200,255,61,0.4), 0 10px 40px -10px rgba(200,255,61,0.55); }
.btn-primary:hover { box-shadow: 0 0 0 1px rgba(200,255,61,0.6), 0 14px 50px -8px rgba(200,255,61,0.7); }
.btn-shine { position: relative; overflow: hidden; isolation: isolate; }
.btn-shine::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,0.65) 50%, transparent 70%);
  transform: translateX(-120%); animation: sweep 3.8s ease-in-out infinite;
}
@keyframes sweep { 0%, 55% { transform: translateX(-120%); } 85%, 100% { transform: translateX(120%); } }

/* Memory console */
.console-wrap { position: relative; perspective: 1200px; }
.console {
  position: relative; border-radius: 22px; overflow: hidden;
  background: linear-gradient(180deg, rgba(21,24,29,0.82), rgba(10,11,13,0.9));
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 40px 120px -30px rgba(0,0,0,0.9), 0 0 0 1px rgba(200,255,61,0.05), inset 0 1px 0 rgba(255,255,255,0.06);
  backdrop-filter: blur(18px) saturate(140%); -webkit-backdrop-filter: blur(18px) saturate(140%);
  transform: rotateY(-8deg) rotateX(4deg); transform-style: preserve-3d;
  transition: transform 0.8s var(--ease);
}
.console-wrap:hover .console { transform: rotateY(-2deg) rotateX(1deg); }
.console::before { /* gradient rim */
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none;
  background: linear-gradient(140deg, rgba(200,255,61,0.55), transparent 35%, transparent 65%, rgba(139,123,255,0.5));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude;
}
.console-head { display: flex; align-items: center; gap: 10px; padding: 16px 20px; border-bottom: 1px solid var(--line); font-size: 0.82rem; color: var(--text-2); }
.console-tag { margin-left: auto; font-size: 0.72rem; color: var(--accent); background: var(--accent-soft); padding: 3px 9px; border-radius: 999px; transition: opacity 0.3s; }
.console-q { padding: 18px 20px 10px; font-size: 0.86rem; color: var(--text); min-height: 52px; }
.console-path { padding: 4px 20px 0; display: flex; flex-wrap: wrap; align-items: center; gap: 6px; min-height: 66px; align-content: flex-start; }
.node-chip {
  font-family: var(--font-mono); font-size: 0.72rem; padding: 5px 10px; border-radius: 8px;
  border: 1px solid var(--line-strong); color: var(--text-2); background: rgba(255,255,255,0.02);
  opacity: 0; transform: translateY(6px) scale(0.96); transition: opacity 0.35s var(--ease), transform 0.35s var(--ease), border-color 0.3s, color 0.3s;
}
.node-chip.on { opacity: 1; transform: none; }
.node-chip.hit { border-color: rgba(200,255,61,0.55); color: var(--accent); background: var(--accent-soft); box-shadow: 0 0 18px -4px rgba(200,255,61,0.5); }
.hop { color: var(--text-3); font-size: 0.72rem; opacity: 0; transition: opacity 0.3s; }
.hop.on { opacity: 1; }
.console-out {
  margin: 14px 20px 0; padding: 14px 16px; border-radius: 12px; min-height: 76px;
  background: rgba(200,255,61,0.05); border: 1px solid rgba(200,255,61,0.14);
  font-size: 0.9rem; line-height: 1.55; color: var(--text); opacity: 0; transform: translateY(6px); transition: opacity 0.4s, transform 0.4s var(--ease);
}
.console-out.on { opacity: 1; transform: none; }
.console-out small { display: block; margin-top: 6px; font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent); }
.console-foot { display: grid; gap: 12px; padding: 18px 20px 20px; }
.spark { display: flex; align-items: flex-end; gap: 3px; height: 34px; }
.spark i { flex: 1; border-radius: 2px; background: linear-gradient(to top, rgba(200,255,61,0.15), rgba(200,255,61,0.75)); transition: height 0.6s var(--ease); }
.console-stats { display: flex; justify-content: space-between; font-size: 0.72rem; color: var(--text-3); }
.console-stats b { color: var(--text); font-weight: 500; }

.float-chip {
  position: absolute; display: inline-flex; align-items: center; gap: 8px; white-space: nowrap;
  font-size: 0.74rem; padding: 9px 14px; border-radius: 999px; color: var(--text);
  background: rgba(14,16,19,0.85); border: 1px solid var(--line-strong); backdrop-filter: blur(10px);
  box-shadow: 0 16px 40px -16px rgba(0,0,0,0.8); animation: bob 6s ease-in-out infinite;
}
.float-chip i { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); }
.chip-a { top: -18px; right: 8%; }
.chip-b { bottom: -18px; left: -6%; color: var(--text-2); animation-delay: -3s; }
@keyframes bob { 50% { transform: translateY(-8px); } }

.scroll-cue {
  position: absolute; left: 50%; bottom: 28px; z-index: 2; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px; font-size: 0.66rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-3);
}
.scroll-cue span { width: 1px; height: 40px; background: linear-gradient(to bottom, transparent, var(--accent)); animation: cue 2.2s ease-in-out infinite; transform-origin: top; }
@keyframes cue { 0% { transform: scaleY(0); opacity: 1; } 60% { transform: scaleY(1); opacity: 1; } 100% { transform: scaleY(1); opacity: 0; } }

/* ---------- Marquee fade edges ---------- */
.strip { mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); background: transparent; }

/* ---------- Headings: soft gradient ---------- */
.h2, .page-hero h1 {
  background: linear-gradient(180deg, #ffffff 0%, #d9d8d2 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.h2 .serif, .page-hero h1 .serif { -webkit-text-fill-color: var(--accent); }
.kicker { padding: 6px 12px 6px 10px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,0.02); }
.kicker::before { width: 6px; height: 6px; border-radius: 50%; box-shadow: 0 0 10px var(--accent); }

/* ---------- Cards: gradient rim on hover + lift ---------- */
.card, .step, .compare, .calc, .demo, .agent-panel, .sdk-card, .stats { position: relative; }
.card::after, .step::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none; opacity: 0; transition: opacity 0.4s;
  background: linear-gradient(140deg, rgba(200,255,61,0.6), rgba(139,123,255,0.25) 40%, transparent 70%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude;
}
.card:hover, .step:hover { transform: translateY(-4px); box-shadow: 0 30px 60px -30px rgba(0,0,0,0.8), 0 0 50px -20px rgba(200,255,61,0.25); }
.card:hover::after, .step:hover::before { opacity: 1; }
.step { transition: transform 0.4s var(--ease), box-shadow 0.4s; }
.card { background: linear-gradient(180deg, var(--ink-2), #0b0c0f); }
.card .num { color: var(--accent); opacity: 0.8; }

/* Bento: big tall card gets an ambient glow */
.b-tall { background: radial-gradient(120% 70% at 50% 100%, rgba(200,255,61,0.09), transparent 60%), linear-gradient(180deg, var(--ink-2), #0b0c0f); }
.mini-graph .node.hot { filter: drop-shadow(0 0 6px rgba(200,255,61,0.8)); }

/* ---------- Compare: glow on the good side ---------- */
.compare-col.good { background: radial-gradient(90% 80% at 100% 0%, rgba(200,255,61,0.08), transparent 60%), var(--ink); }
.compare-col.good .bar i { box-shadow: 0 0 14px rgba(200,255,61,0.55); }

/* ---------- Stats: gradient numerals ---------- */
.stats { border-radius: var(--radius); border: 1px solid var(--line); background: linear-gradient(180deg, rgba(255,255,255,0.025), transparent); overflow: hidden; }
.stat { transition: background 0.3s; }
.stat:hover { background: rgba(200,255,61,0.03); }
.stat-val { background: linear-gradient(180deg, #ffffff 10%, #9ea0a6 100%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat-val small { -webkit-text-fill-color: var(--accent); }

/* ---------- Agents / demo / sdk panels ---------- */
.agent-panel, .demo, .sdk-card, .calc { box-shadow: 0 40px 100px -50px rgba(0,0,0,0.9); }
.agent-btn[aria-selected="true"] { background: linear-gradient(90deg, rgba(200,255,61,0.08), var(--ink-2) 60%); border-color: rgba(200,255,61,0.25); }
.demo-head { background: linear-gradient(90deg, rgba(200,255,61,0.05), transparent 50%); }
.msg.user { box-shadow: 0 8px 24px -10px rgba(200,255,61,0.6); }

/* ---------- CTA: living gradient ---------- */
.cta { background: radial-gradient(120% 140% at 0% 0%, #e4ff8a 0%, var(--accent) 38%, #a6e81f 75%, #8fd61a 100%); box-shadow: 0 50px 120px -40px rgba(200,255,61,0.45); }
.cta::before {
  content: ""; position: absolute; inset: -50%; pointer-events: none; z-index: 0; opacity: 0.35;
  background: conic-gradient(from 0deg, transparent 0 70%, rgba(255,255,255,0.7) 80%, transparent 90%);
  animation: spin 14s linear infinite;
}
@keyframes spin { to { transform: rotate(1turn); } }
.cta-grid { z-index: 1; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 72px; }
  .console { transform: none; }
  .console-wrap { max-width: 560px; }
  .scroll-cue { display: none; }
  .aurora i:nth-child(1) { width: 80vw; height: 80vw; }
  .aurora i:nth-child(2) { width: 70vw; height: 70vw; }
}
@media (max-width: 680px) {
  .chip-b { left: 0; }
  .chip-a { right: 0; }
  .console-q { font-size: 0.8rem; }
}
@media (hover: none) { .cursor-glow { display: none; } }
@media (prefers-reduced-motion: reduce) {
  .aurora i, .shimmer, .btn-shine::after, .float-chip, .cta::before { animation: none !important; }
}

/* v3.1 tuning */
.hero::after { background: linear-gradient(to bottom, rgba(8,9,11,0.35), transparent 25%, transparent 70%, var(--ink)); }
.hero .wrap { z-index: 2; }
.hero-grid .hero-title { font-size: clamp(2.9rem, 6.2vw, 6rem); }
.hero-meta { margin-top: 48px; }
.scroll-cue { display: none; }
.chip-b { bottom: -44px; left: 4%; }
.console-foot { padding-bottom: 22px; }

/* Callouts (shared by homepage + docs) */
.callout { display: flex; gap: 14px; padding: 16px 20px; border: 1px solid rgba(200,255,61,0.25); background: var(--accent-soft); border-radius: var(--radius-sm); font-size: 0.9rem; color: var(--text); margin-bottom: 40px; }
.callout b { color: var(--accent); font-family: var(--font-mono); font-weight: 400; font-size: 0.78rem; letter-spacing: 0.06em; text-transform: uppercase; flex-shrink: 0; padding-top: 2px; }
.callout a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.callout code { font-size: 0.85em; background: rgba(255,255,255,0.06); padding: 1px 5px; border-radius: 4px; }
.callout.soon { margin: 28px 0 0; }
@media (max-width: 680px) { .callout { flex-direction: column; gap: 6px; } }

.demo-flag { font-size: 0.64rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-2); border: 1px solid var(--line-strong); padding: 2px 7px; border-radius: 999px; margin-left: 6px; }
.illus-note { font-size: 0.74rem; color: var(--text-3); margin: -36px 0 16px; }

/* Performance: lighter effects on small / low-power screens */
@media (max-width: 760px) {
  body::after { display: none; }                     /* film grain */
  .aurora { filter: blur(40px); opacity: 0.7; }
  .aurora i { animation: none; }
  .console, .float-chip, .nav.scrolled { backdrop-filter: none; -webkit-backdrop-filter: none; }
  .console { background: #111318; }
  .cta::before { animation: none; }
}

/* Accessibility */
.skip { position: absolute; left: 12px; top: -60px; z-index: 300; padding: 10px 16px; border-radius: 10px; background: var(--accent); color: var(--accent-ink); font-weight: 500; transition: top 0.2s; }
.skip:focus { top: 12px; }
.lead a, .faq a, .prose a, .wl-note a, .form-foot a { text-decoration: underline; text-underline-offset: 3px; }
.foot-grid ul a { display: inline-block; padding: 4px 0; }
pre[tabindex]:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.mobile-panel[inert] { visibility: hidden; }
.nav.open + .mobile-panel { visibility: visible; }

/* Hindi (Devanagari) page: Geist has no Devanagari glyphs, so the browser falls back per-glyph */
html[lang="hi"] body { font-family: var(--font-sans), 'Noto Sans Devanagari', 'Kohinoor Devanagari', 'Mangal', sans-serif; }
html[lang="hi"] .hero h1, html[lang="hi"] .h2, html[lang="hi"] .cta h2 { letter-spacing: -0.01em; line-height: 1.18; }
html[lang="hi"] .hero-grid .hero-title { font-size: clamp(2.5rem, 5.4vw, 5rem); }
.serif-hi { color: var(--accent); }
.h2 .serif-hi { -webkit-text-fill-color: var(--accent); }
.cta .serif-hi { color: var(--accent-ink); text-decoration: underline; text-decoration-thickness: 3px; text-underline-offset: 8px; }
.grid-4-home { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 1024px) { .grid-4-home { grid-template-columns: 1fr 1fr; } }
@media (max-width: 680px) { .grid-4-home { grid-template-columns: 1fr; } }
.lang-switch { font-size: 0.84rem; }
[hidden] { display: none !important; }
html[lang="hi"] .hero-meta, html[lang="hi"] .kicker, html[lang="hi"] .illus-note, html[lang="hi"] .foot-h, html[lang="hi"] .decay-row .mono, html[lang="hi"] .tag, html[lang="hi"] .demo-flag { letter-spacing: 0; text-transform: none; font-family: var(--font-sans), 'Noto Sans Devanagari', sans-serif; }