/* ============================================================
   Nexus — landing page v3 (honest by design)
   Design tokens first; everything downstream reads them.
   Themes are swappable at runtime (nav → theme picker).
   No terminal chrome, no mock app UI — typographic only.
   ============================================================ */

:root {
  /* color tokens */
  --bg: #080a0f;
  --bg-raise: #0d1219;
  --panel: #0d1219;
  --panel-2: #121822;
  --line: #1c2635;
  --line-strong: #27364b;
  --text: #e2e8f0;
  --muted: #7b8ea3;
  --faint: #55677c;
  --green: #34d399;
  --green-bright: #3ee695;
  --green-deep: #1fbe7e;
  --glow: rgba(52, 211, 153, 0.25);
  --green-soft: rgba(52, 211, 153, 0.12);
  --warn: #e5aa64;
  --danger: #eb808a;
  --info: #58c4f0;

  /* type */
  --font-ui: "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "DM Mono", "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  /* layout */
  --container: 1160px;
  --nav-h: 64px;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.03) inset, 0 20px 50px -30px rgba(0, 0, 0, 0.8);
}

/* App appearance themes, shared with the desktop Settings picker.
   The default (no attribute) IS the nexus palette. */
html[data-theme="dark-white"] { --bg:#101010; --bg-raise:#161616; --panel:#161616; --panel-2:#1e1e1e; --line:#2a2a2a; --line-strong:#383838; --text:#fff; --muted:#a3a3a3; --faint:#5a5a5a; --green:#fff; --green-bright:#fff; --green-deep:#d4d4d4; --glow:rgba(255,255,255,.18); --green-soft:rgba(255,255,255,.08); --info:#d4d4d4; }
html[data-theme="nexus"] { --info:#58c4f0; }
html[data-theme="midnight"] { --bg:#060b16; --bg-raise:#0b1424; --panel:#0b1424; --panel-2:#111c32; --line:#1e2d4d; --line-strong:#2c4168; --text:#e2eaf6; --muted:#8498b3; --faint:#5a6d88; --green:#38bdf8; --green-bright:#93c5fd; --green-deep:#0ea5e9; --glow:rgba(96,165,250,.22); --green-soft:rgba(96,165,250,.14); --info:#7dd3fc; }
html[data-theme="grape"] { --bg:#0c0a15; --bg-raise:#141026; --panel:#141026; --panel-2:#1c1533; --line:#2a2145; --line-strong:#3d3163; --text:#e9e4f7; --muted:#9a8fb8; --faint:#6d6390; --green:#a78bfa; --green-bright:#c4b5fd; --green-deep:#8b5cf6; --glow:rgba(167,139,250,.22); --green-soft:rgba(167,139,250,.14); --info:#e879f9; }
html[data-theme="ember"] { --bg:#0f0a07; --bg-raise:#191009; --panel:#191009; --panel-2:#221610; --line:#332217; --line-strong:#4d3423; --text:#f3e9df; --muted:#b39b84; --faint:#84705c; --green:#fb923c; --green-bright:#fdba74; --green-deep:#ea8a1f; --glow:rgba(251,146,60,.22); --green-soft:rgba(251,146,60,.14); --info:#fbbf24; }
html[data-theme="crimson"] { --bg:#10080c; --bg-raise:#1b1016; --panel:#1b1016; --panel-2:#25141d; --line:#3a1f2a; --line-strong:#552b3b; --text:#f6e4e9; --muted:#b58c98; --faint:#82606b; --green:#fb7185; --green-bright:#fda4af; --green-deep:#f43f5e; --glow:rgba(251,113,133,.22); --green-soft:rgba(251,113,133,.13); --info:#f9a8d4; }
html[data-theme="lagoon"] { --bg:#061110; --bg-raise:#0a1a19; --panel:#0a1a19; --panel-2:#102524; --line:#1c3a38; --line-strong:#2a5451; --text:#ddf3ee; --muted:#86a8a3; --faint:#5d7d79; --green:#2dd4bf; --green-bright:#5eead4; --green-deep:#14b8a6; --glow:rgba(45,212,191,.2); --green-soft:rgba(45,212,191,.12); --info:#67e8f9; }
html[data-theme="moss"] { --bg:#090e06; --bg-raise:#121a0c; --panel:#121a0c; --panel-2:#1a2511; --line:#27351a; --line-strong:#3a4f26; --text:#eaf3dc; --muted:#9aae83; --faint:#6e7f5e; --green:#4ade80; --green-bright:#bef264; --green-deep:#65a30d; --glow:rgba(163,230,53,.18); --green-soft:rgba(163,230,53,.12); --info:#a3e635; }
html[data-theme="alabaster"], html[data-theme="daylight"] { color-scheme: light; --bg:#e9e4d8; --bg-raise:#ddd8cb; --panel:#e2d7c5; --panel-2:#d0c9bb; --line:#c1baa9; --line-strong:#aca492; --text:#241e17; --muted:#635444; --faint:#8f7d6a; --green:#047857; --green-bright:#059669; --green-deep:#b45309; --glow:rgba(4,120,87,.16); --green-soft:rgba(4,120,87,.09); --info:#0f766e; }
html[data-theme="alabaster"] { --bg:#ede5d8; --bg-raise:#e2d7c5; --panel:#e2d7c5; --panel-2:#d5c8b2; --green:#d9530f; --green-bright:#ea580c; --green-deep:#c2410c; --glow:rgba(217,83,15,.18); --green-soft:rgba(217,83,15,.1); --info:#b45309; }

/* Light themes need their own surface treatment; the product UI is dark-first. */
html[data-theme="alabaster"], html[data-theme="daylight"] {
  --shadow-card: 0 1px 0 rgba(255,255,255,.72) inset, 0 18px 42px -28px rgba(71,52,28,.35);
}
html[data-theme="alabaster"] .nav, html[data-theme="daylight"] .nav {
  background: rgba(233,228,216,.84); border-bottom-color: rgba(99,84,68,.18);
}
html[data-theme="alabaster"] .nav.scrolled, html[data-theme="daylight"] .nav.scrolled {
  background: rgba(233,228,216,.92); box-shadow: 0 14px 34px -24px rgba(71,52,28,.35);
}
html[data-theme="alabaster"] .nav-links a:hover, html[data-theme="daylight"] .nav-links a:hover,
html[data-theme="alabaster"] .btn-ghost, html[data-theme="daylight"] .btn-ghost,
html[data-theme="alabaster"] .eyebrow, html[data-theme="daylight"] .eyebrow {
  background: rgba(255,255,255,.34);
}
html[data-theme="alabaster"] .theme-btn, html[data-theme="daylight"] .theme-btn {
  background: rgba(255,255,255,.42);
}
html[data-theme="alabaster"] .theme-pop, html[data-theme="daylight"] .theme-pop {
  box-shadow: 0 24px 50px -20px rgba(71,52,28,.4);
}
html[data-theme="alabaster"] .theme-item:hover, html[data-theme="daylight"] .theme-item:hover {
  background: rgba(255,255,255,.5);
}
html[data-theme="alabaster"] .undo-chip, html[data-theme="daylight"] .undo-chip { background: rgba(226,215,197,.92); }
html[data-theme="alabaster"] .from-source pre, html[data-theme="daylight"] .from-source pre { color: var(--text); }

/* smooth re-ink when the theme changes */
body, .nav, .btn, .mode-card, .sec-card, .plan-card, .deep-visual, .faq-item, .dl-card,
.from-source, .theme-pop, .theme-btn, .cap-chip, .prov-chip, .ver-pill {
  transition-property: background-color, border-color, color, box-shadow;
  transition-duration: 0.25s;
  transition-timing-function: ease;
}

/* ============ base ============ */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; }
a { color: var(--green-bright); text-decoration: none; }
h1, h2, h3, h4 { line-height: 1.12; margin: 0; letter-spacing: -0.025em; }
p { margin: 0; }
code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.1em 0.4em;
  color: var(--green-bright);
}

.container { width: min(var(--container), 100% - 48px); margin-inline: auto; }
.container-narrow { max-width: 820px; }

.skip-link {
  position: fixed; top: -48px; left: 16px; z-index: 300;
  background: var(--green); color: #04120b; font-weight: 700;
  padding: 8px 14px; border-radius: 8px; transition: top 0.2s;
}
.skip-link:focus { top: 12px; }

::selection { background: var(--green-soft); color: var(--green-bright); }

/* ============ ambient background ============ */
.aurora { position: fixed; inset: 0; z-index: -2; overflow: hidden; pointer-events: none; }
/* No filter: blur() here on purpose — the radial gradients are already soft,
   and large fixed blur layers get re-rasterized while scrolling on iOS Safari,
   which can kill the renderer process ("a problem repeatedly occurred"). */
.aurora .au { position: absolute; border-radius: 50%; opacity: 0.5; }
.au-1 { width: 640px; height: 640px; top: -220px; left: -140px; background: radial-gradient(circle, var(--glow), transparent 65%); }
.au-2 { width: 720px; height: 720px; top: 8%; right: -280px; background: radial-gradient(circle, rgba(45, 132, 251, 0.13), transparent 65%); }
.au-3 { width: 560px; height: 560px; bottom: -220px; left: 32%; background: radial-gradient(circle, var(--green-soft), transparent 65%); }
.grid-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(124, 142, 163, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 142, 163, 0.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, black 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, black 0%, transparent 75%);
}
#hexField { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.85; }

/* ============ buttons ============ */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-ui); font-weight: 600; font-size: 15px; line-height: 1;
  padding: 13px 22px; border-radius: 11px; border: 1px solid transparent;
  cursor: pointer; white-space: nowrap;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease, border-color 0.16s, color 0.16s;
}
.btn-sm { padding: 9px 16px; font-size: 14px; border-radius: 9px; }
.btn-primary {
  background: linear-gradient(135deg, var(--green-bright), var(--green-deep));
  color: #04120b;
  box-shadow: 0 0 0 1px rgba(62, 230, 149, 0.35), 0 10px 30px -12px var(--glow), 0 0 34px -8px var(--glow);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 0 0 1px rgba(62, 230, 149, 0.5), 0 14px 34px -12px var(--glow), 0 0 44px -6px var(--glow); }
.btn-primary:active { transform: translateY(0); }
.btn-ghost { background: rgba(255, 255, 255, 0.03); border-color: var(--line-strong); color: var(--text); }
.btn-ghost:hover { border-color: var(--green); color: var(--green-bright); transform: translateY(-1px); }
.inline-link { border-bottom: 1px solid rgba(62, 230, 149, 0.35); }
.inline-link:hover { border-bottom-color: var(--green-bright); }

/* ============ run rail (desktop) ============ */
.rail {
  position: fixed; left: 22px; top: 50%; transform: translateY(-50%);
  z-index: 40; display: flex; flex-direction: column; align-items: center; gap: 14px;
}
.rail-track { width: 2px; height: 200px; background: var(--line); border-radius: 2px; overflow: hidden; }
.rail-fill { width: 100%; height: 0%; background: linear-gradient(180deg, var(--green-bright), var(--green-deep)); box-shadow: 0 0 12px var(--glow); transition: height 0.15s linear; }
.rail-steps { display: flex; flex-direction: column; gap: 10px; }
.rail-step {
  font-family: var(--font-mono); font-size: 10.5px; color: var(--faint);
  transition: color 0.2s, text-shadow 0.2s;
}
.rail-step.hit { color: var(--green-bright); text-shadow: 0 0 10px var(--glow); }
.rail-step.done { color: var(--muted); }
.rail-label {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--faint);
  writing-mode: vertical-rl;
}
.no-js .rail { display: none; }

/* ============ nav ============ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  height: var(--nav-h);
  transition: background 0.25s, border-color 0.25s, backdrop-filter 0.25s;
  border-bottom: 1px solid transparent;
  background: linear-gradient(180deg, rgba(8, 10, 15, 0.82), rgba(8, 10, 15, 0.42));
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.nav.scrolled {
  background: rgba(8, 10, 15, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
  box-shadow: 0 14px 34px -24px rgba(0, 0, 0, 0.9);
}
.nav-inner {
  width: min(var(--container), 100% - 48px); margin-inline: auto;
  height: 100%; display: flex; align-items: center; gap: 28px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 19px; letter-spacing: -0.02em; }
.brand-word { font-family: var(--font-ui); font-weight: 700; text-shadow: 0 0 18px var(--glow); }

.nav-links { display: flex; gap: 4px; margin-inline: auto; }
.nav-links a {
  color: var(--muted); font-size: 14.5px; font-weight: 500;
  padding: 8px 13px; border-radius: 8px; transition: color 0.15s, background 0.15s;
}
.nav-links a:hover { color: var(--text); background: rgba(255, 255, 255, 0.04); }
.nav-links a[aria-current="true"] { color: var(--green-bright); }

.nav-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.icon-link { color: var(--muted); transition: color 0.15s, transform 0.15s; }
.icon-link:hover { color: var(--text); transform: translateY(-1px); }
.ver-pill {
  font-family: var(--font-mono); font-size: 12.5px; color: var(--green-bright);
  background: var(--green-soft); border: 1px solid rgba(62, 230, 149, 0.3);
  padding: 4px 10px; border-radius: 999px; white-space: nowrap;
}

/* --- theme picker --- */
.theme-wrap { position: relative; }
.theme-btn {
  position: relative;
  display: grid; place-items: center;
  width: 38px; height: 38px; border-radius: 10px;
  border: 1px solid var(--line-strong); background: rgba(255, 255, 255, 0.03);
  color: var(--muted); cursor: pointer;
  transition: color 0.15s, border-color 0.15s, transform 0.15s, background 0.15s;
}
.theme-btn:hover { color: var(--text); border-color: var(--green); transform: translateY(-1px); }
.theme-btn[aria-expanded="true"] { color: var(--green-bright); border-color: var(--green); }
.theme-dot {
  position: absolute; right: 7px; bottom: 7px;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--green); box-shadow: 0 0 6px var(--glow);
  transition: background 0.25s, box-shadow 0.25s;
}
.theme-pop {
  position: absolute; top: calc(100% + 10px); right: 0; z-index: 80;
  width: 192px; padding: 6px;
  background: var(--bg-raise); border: 1px solid var(--line-strong); border-radius: 12px;
  box-shadow: var(--shadow-card), 0 24px 50px -20px rgba(0, 0, 0, 0.6);
  display: grid; gap: 2px;
}
.theme-pop[hidden] { display: none; }
.theme-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border: 0; border-radius: 8px;
  background: none; color: var(--muted);
  font-family: var(--font-ui); font-size: 13.5px; font-weight: 500;
  cursor: pointer; text-align: left;
  transition: background 0.12s, color 0.12s;
}
.theme-item:hover { background: rgba(255, 255, 255, 0.05); color: var(--text); }
.theme-item .sw {
  width: 12px; height: 12px; border-radius: 50%; flex: none;
  background: var(--sw); box-shadow: 0 0 8px color-mix(in srgb, var(--sw) 55%, transparent);
}
.theme-item[aria-checked="true"] { color: var(--green-bright); background: var(--green-soft); }
.theme-item .tick { margin-left: auto; font-size: 12px; opacity: 0; }
.theme-item[aria-checked="true"] .tick { opacity: 1; }

.nav-burger {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px; padding: 8px;
  background: none; border: 1px solid var(--line-strong); border-radius: 9px; cursor: pointer;
}
.nav-burger span { display: block; height: 2px; border-radius: 2px; background: var(--text); transition: transform 0.2s, opacity 0.2s; }
.nav-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ hero ============ */
.hero { position: relative; padding: calc(var(--nav-h) + 70px) 0 30px; }
.hero::after {
  content: ""; position: absolute; left: 50%; bottom: -1px; width: min(760px, 86%);
  height: 1px; transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, rgba(62, 230, 149, 0.35), transparent);
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--green) 35%, transparent), color-mix(in srgb, var(--info) 25%, transparent), transparent);
}
.hero-inner {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 56px; align-items: center;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-mono); font-size: 13px; color: var(--muted);
  background: rgba(255, 255, 255, 0.03); border: 1px solid var(--line);
  padding: 7px 14px; border-radius: 999px; margin-bottom: 26px;
}
.eyebrow [data-release-version] { color: var(--green-bright); }
.eyebrow-sep { color: var(--faint); }
.pulse-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--green-bright);
  box-shadow: 0 0 0 0 var(--glow); animation: pulse 2.2s ease-out infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(62, 230, 149, 0.5); }
  70% { box-shadow: 0 0 0 9px rgba(62, 230, 149, 0); }
  100% { box-shadow: 0 0 0 0 rgba(62, 230, 149, 0); }
}

.hero h1 {
  font-size: clamp(34px, 3.9vw, 52px);
  font-weight: 700; letter-spacing: -0.035em; margin-bottom: 22px;
  text-wrap: balance; min-height: 2.3em;
}
.grad {
  /* fallback first for iOS < 16.2 (no color-mix): a two-stop gradient,
     then the richer three-stop version overrides where color-mix works */
  background: linear-gradient(92deg, var(--green-bright) 10%, var(--info) 90%);
  background: linear-gradient(92deg, var(--green-bright) 10%, color-mix(in srgb, var(--green-bright) 45%, var(--info)) 45%, var(--info) 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { font-size: 18px; color: var(--muted); max-width: 54ch; margin-bottom: 30px; }
.hero-sub strong { color: var(--text); }
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 26px; }
.hero-chips {
  list-style: none; display: flex; flex-wrap: wrap; gap: 8px 22px;
  padding: 0; margin: 0; color: var(--faint); font-size: 13.5px;
}
.hero-chips li { display: inline-flex; align-items: center; gap: 8px; }
.hero-chips li::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--glow); }

/* --- hero plan card (the agent plans your visit — honest website chrome) --- */
.plan-card {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line-strong); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card), 0 0 60px -20px var(--glow);
  overflow: hidden;
}
.plan-head {
  display: flex; align-items: center; gap: 10px;
  padding: 16px 20px; border-bottom: 1px solid var(--line);
}
.plan-ic { color: var(--green-bright); font-size: 15px; }
.plan-title { font-weight: 600; font-size: 14.5px; letter-spacing: -0.01em; }
.plan-meta { margin-left: auto; font-family: var(--font-mono); font-size: 11.5px; color: var(--faint); white-space: nowrap; }
.plan-steps { list-style: none; margin: 0; padding: 10px; display: grid; gap: 4px; }
.plan-steps li { position: relative; }
.plan-steps a {
  display: flex; align-items: center; gap: 13px;
  padding: 12px 13px; border-radius: 11px;
  color: var(--muted); border-left: 2px solid transparent;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.plan-steps a:hover, .plan-steps a:focus-visible {
  background: var(--green-soft); color: var(--text); outline: none;
  border-left-color: rgba(62, 230, 149, 0.5);
}
.ps-no {
  width: 24px; flex: none; text-align: center;
  font-family: var(--font-mono); font-size: 11.5px; color: var(--faint);
  transition: color 0.2s, text-shadow 0.2s;
}
.ps-body { min-width: 0; }
.ps-t { display: block; font-weight: 600; font-size: 14px; line-height: 1.3; }
.ps-d { display: block; font-size: 12px; color: var(--faint); margin-top: 1px; }
.ps-mark { margin-left: auto; opacity: 0; transform: translateX(-4px); transition: opacity 0.15s, transform 0.15s; color: var(--green-bright); flex: none; }
.plan-steps a:hover .ps-mark, .plan-steps a:focus-visible .ps-mark { opacity: 1; transform: none; }
.plan-steps li.active a {
  background: var(--green-soft); color: var(--text);
  border-left-color: var(--green);
}
.plan-steps li.active .ps-no { color: var(--green-bright); text-shadow: 0 0 10px var(--glow); }
.plan-steps li.done .ps-no { color: var(--green-bright); }
.plan-foot {
  display: flex; align-items: center; gap: 9px;
  padding: 13px 20px; border-top: 1px solid var(--line);
  font-family: var(--font-mono); font-size: 11.5px; color: var(--faint);
  letter-spacing: 0.06em;
}
.plan-dot {
  width: 7px; height: 7px; border-radius: 50%; flex: none;
  background: var(--green-bright); box-shadow: 0 0 0 0 var(--glow);
  animation: pulse 2.2s ease-out infinite;
}

/* ============ kinetic statements ============ */
.kinetic { padding: 110px 24px 30px; text-align: center; }
.kinetic-line {
  font-family: var(--font-ui);
  font-size: clamp(40px, 7.5vw, 88px);
  font-weight: 700; letter-spacing: -0.04em; line-height: 1.04;
  margin: 0;
}
.kinetic-line.grad { margin-top: 2px; }

/* ============ sections ============ */
.section { padding: 96px 0 8px; }
.sec-head { text-align: center; max-width: 760px; margin: 0 auto 54px; }
.kicker {
  font-family: var(--font-mono); font-size: 12.5px; letter-spacing: 0.24em;
  text-transform: uppercase; color: var(--green); margin-bottom: 14px;
}
.sec-head h2 { font-size: clamp(30px, 4vw, 44px); font-weight: 700; letter-spacing: -0.03em; margin-bottom: 16px; }
.lead { color: var(--muted); font-size: 17px; }

/* ============ surfaces (mode cards) ============ */
.modes-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.mode-card {
  display: flex; flex-direction: column;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 28px;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.mode-card:hover { border-color: color-mix(in srgb, var(--green) 42%, var(--line-strong)); transform: translateY(-6px); box-shadow: var(--shadow-card), 0 22px 50px -30px var(--glow); }
.mode-card-hl { border-color: rgba(62, 230, 149, 0.35); box-shadow: 0 0 44px -18px var(--glow); }
.mode-top { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.mode-icon {
  display: grid; place-items: center; width: 40px; height: 40px;
  border-radius: 11px; color: var(--green-bright);
  background: var(--green-soft); border: 1px solid rgba(62, 230, 149, 0.28); flex: none;
}
.mode-card h3 { font-size: 22px; }
.mode-sub {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--faint); margin-left: auto;
}
.mode-card > p { color: var(--muted); font-size: 15px; margin-bottom: 18px; }
.mode-card > p strong { color: var(--text); }
.mode-list { list-style: none; padding: 0; margin: 0 0 22px; display: grid; gap: 9px; font-size: 14px; color: var(--muted); }
.mode-list li { padding-left: 22px; position: relative; }
.mode-list li::before { content: "✦"; position: absolute; left: 0; top: 0; color: var(--green); font-size: 12px; }
.mode-foot {
  margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line);
  font-family: var(--font-mono); font-size: 11.5px; color: var(--faint);
  letter-spacing: 0.04em;
}

/* capability strip */
.cap-strip { overflow: hidden; margin-top: 56px; padding: 14px 0; border-block: 1px solid var(--line); background: rgba(255, 255, 255, 0.012); }
.cap-track { display: flex; gap: 12px; width: max-content; animation: marquee 36s linear infinite; }
.cap-chip {
  font-family: var(--font-mono); font-size: 12.5px; color: var(--faint);
  border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; white-space: nowrap;
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* ============ loop / architecture ============ */
.arch { max-width: 980px; margin-inline: auto; }
.arch-flow { display: flex; align-items: stretch; gap: 10px; justify-content: center; flex-wrap: wrap; }
.flow-node {
  flex: 1 1 150px; min-width: 138px; text-align: center;
  padding: 18px 12px 15px;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  font-weight: 700; font-size: 15.5px; position: relative;
  opacity: 0.45; transition: opacity 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.flow-node.lit { opacity: 1; }
.fn-plan { border-color: rgba(229, 170, 100, 0.45); color: var(--warn); }
.fn-act { border-color: rgba(88, 196, 240, 0.4); }
.fn-verify { border-color: rgba(62, 230, 149, 0.5); }
.fn-done { border-color: rgba(62, 230, 149, 0.5); color: var(--green-bright); }
.flow-node.lit.fn-verify, .flow-node.lit.fn-done { box-shadow: 0 0 34px -14px var(--glow); }
.flow-node span { display: block; margin-top: 6px; font-weight: 400; font-size: 11.5px; color: var(--faint); line-height: 1.45; }
.flow-arrow { align-self: center; color: var(--faint); font-size: 18px; flex: none; transition: color 0.2s, text-shadow 0.2s; }
.flow-arrow.lit { color: var(--green-bright); text-shadow: 0 0 12px var(--glow); }
.arch-repair {
  margin-top: 14px; text-align: center;
  font-family: var(--font-mono); font-size: 12.5px; color: var(--warn);
  border: 1px dashed rgba(229, 170, 100, 0.4); border-radius: 999px;
  padding: 9px 18px; background: rgba(229, 170, 100, 0.06);
  width: fit-content; margin-inline: auto;
  opacity: 0.5; transition: opacity 0.25s, box-shadow 0.25s;
}
.arch-repair.hot { opacity: 1; box-shadow: 0 0 30px -10px rgba(229, 170, 100, 0.4); }

.mode-table {
  width: 100%; margin-top: 34px; border-collapse: collapse; font-size: 14.5px;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
}
.mode-table th, .mode-table td { text-align: left; padding: 13px 18px; border-bottom: 1px solid var(--line); }
.mode-table th {
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--faint); font-weight: 500;
  background: rgba(255, 255, 255, 0.015);
}
.mode-table tr:last-child td { border-bottom: none; }
.mode-table td:first-child { color: var(--green-bright); }
.arch-note { margin-top: 22px; text-align: center; color: var(--faint); font-size: 13.5px; max-width: 720px; margin-inline: auto; }

/* ============ trust ============ */
.sec-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 34px; }
.sec-card {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: var(--radius); padding: 22px;
  transition: border-color 0.2s, transform 0.2s;
}
.sec-card:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.sec-card h3 { font-size: 16.5px; margin-bottom: 7px; color: var(--text); }
.sec-card p { color: var(--muted); font-size: 13.5px; }
.honest {
  max-width: 760px; margin-inline: auto; text-align: center; color: var(--muted); font-size: 14.5px;
  border: 1px solid var(--line); border-left: 3px solid var(--warn);
  background: rgba(229, 170, 100, 0.05); border-radius: 12px; padding: 18px 24px;
}
.honest strong { color: var(--warn); }
.honest em { color: var(--text); font-style: normal; font-weight: 600; }
.providers-head { text-align: center; margin-top: 72px; margin-bottom: 30px; }
.providers-head .prov-h2 { font-size: clamp(26px, 3.4vw, 38px); }

.marquee {
  overflow: hidden; padding: 8px 0 26px;
  mask-image: linear-gradient(90deg, transparent, black 12%, black 88%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, black 12%, black 88%, transparent);
}
.marquee-track { display: flex; gap: 12px; width: max-content; animation: marquee 30s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.prov-chip {
  font-family: var(--font-mono); font-size: 13.5px; color: var(--muted);
  background: var(--panel); border: 1px solid var(--line-strong);
  border-radius: 999px; padding: 9px 20px; white-space: nowrap;
  transition: color 0.2s, border-color 0.2s;
}
.prov-chip:hover { color: var(--green-bright); border-color: rgba(62, 230, 149, 0.45); }

/* ============ faq ============ */
.faq { display: grid; gap: 10px; }
.faq-item { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: border-color 0.2s; }
.faq-item[open] { border-color: rgba(62, 230, 149, 0.35); }
.faq-item summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 17px 22px; font-weight: 600; font-size: 15.5px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; font-family: var(--font-mono); color: var(--green-bright);
  font-size: 19px; flex: none; transition: transform 0.2s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 22px 19px; color: var(--muted); font-size: 14.5px; }
.faq-item p strong { color: var(--text); }

/* ============ download ============ */
.dl-grid { display: grid; grid-template-columns: 1fr; max-width: 480px; margin-inline: auto; gap: 16px; margin-bottom: 30px; }
.dl-card {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 26px; display: flex; flex-direction: column; gap: 10px;
}
.dl-card h3 { display: flex; align-items: center; gap: 10px; font-size: 18px; }
.dl-card h3 svg { color: var(--green-bright); }
.dl-card p { color: var(--muted); font-size: 13.5px; flex: 1; }
.dl-btns { display: flex; flex-direction: column; gap: 9px; }
.dl-btns .btn { justify-content: center; font-size: 14px; padding: 12px 18px; }

.from-source {
  max-width: 680px; margin-inline: auto;
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
}
.fs-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; border-bottom: 1px solid var(--line);
  font-size: 13.5px; color: var(--muted);
}
.copy-btn {
  font-family: var(--font-mono); font-size: 12px; color: var(--green-bright);
  background: var(--green-soft); border: 1px solid rgba(62, 230, 149, 0.3);
  border-radius: 7px; padding: 4px 12px; cursor: pointer; transition: background 0.15s;
}
.copy-btn:hover { background: rgba(62, 230, 149, 0.2); }
.from-source pre {
  margin: 0; padding: 18px 20px; overflow-x: auto;
  font-family: var(--font-mono); font-size: 13px; line-height: 1.7; color: #b9cadd;
}
.fs-note { padding: 10px 18px 14px; color: var(--faint); font-size: 12.5px; }

/* ============ footer ============ */
.footer { margin-top: 96px; border-top: 1px solid var(--line); background: rgba(255, 255, 255, 0.012); }
.footer-inner { padding: 44px 0 34px; display: grid; gap: 18px; justify-items: center; text-align: center; }
.foot-brand .brand-word { font-size: 21px; }
.foot-brand p { font-family: var(--font-mono); font-size: 12.5px; color: var(--faint); letter-spacing: 0.18em; text-transform: uppercase; margin-top: 6px; }
.foot-links { display: flex; gap: 22px; flex-wrap: wrap; justify-content: center; }
.foot-links a { color: var(--muted); font-size: 14px; }
.foot-links a:hover { color: var(--green-bright); }
.foot-note { color: var(--faint); font-size: 12.5px; }
.foot-hint { opacity: 0.7; }

/* ============ undo chip + toast (injected by app.js) ============ */
.undo-chip {
  position: fixed; right: 20px; bottom: 20px; z-index: 60;
  font-family: var(--font-mono); font-size: 12px; color: var(--muted);
  background: rgba(13, 18, 25, 0.9); border: 1px dashed var(--line-strong);
  border-radius: 999px; padding: 8px 16px; cursor: pointer;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: color 0.2s, border-color 0.2s, transform 0.2s, opacity 0.2s;
}
.undo-chip:hover:not(:disabled) { color: var(--green-bright); border-color: rgba(62, 230, 149, 0.5); transform: translateY(-2px); }
.undo-chip:disabled,
.undo-chip.disabled {
  opacity: 0.35;
  cursor: not-allowed;
  border-color: var(--line);
  color: var(--faint);
  transform: none;
  box-shadow: none;
}
.undo-chip:disabled:hover,
.undo-chip.disabled:hover {
  color: var(--faint);
  border-color: var(--line);
  transform: none;
}
.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%) translateY(8px);
  z-index: 70; font-family: var(--font-mono); font-size: 12.5px; color: var(--green-bright);
  background: rgba(13, 18, 25, 0.95); border: 1px solid rgba(62, 230, 149, 0.4);
  border-radius: 999px; padding: 9px 18px; pointer-events: none;
  opacity: 0; transition: opacity 0.2s, transform 0.2s;
  box-shadow: 0 0 30px -10px var(--glow);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ============ reveal-on-scroll (JS-gated so no-JS stays readable) ============ */
.js [data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease var(--d, 0s), transform 0.6s ease var(--d, 0s); }
.js [data-reveal].in { opacity: 1; transform: none; }

/* ============ mode deep dives ============ */
.deep {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 44px;
  align-items: center;
  margin-top: 72px;
}
.deep.flip .deep-copy { order: 2; }
.deep.flip .deep-visual { order: 1; }
.deep-copy .kicker { margin-bottom: 10px; }
.deep-copy h3 { font-size: clamp(24px, 2.6vw, 32px); margin-bottom: 14px; }
.deep-copy > p { color: var(--muted); font-size: 15.5px; margin-bottom: 22px; }
.deep-list {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px 26px;
  font-size: 14px; color: var(--muted);
}
.deep-list li { padding-left: 24px; position: relative; }
.deep-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--green); font-weight: 700; }

/* deep-dive visuals — diagrams and stats, no mock app chrome */
.deep-visual {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card), 0 0 50px -24px var(--glow);
  padding: 28px; display: grid; gap: 18px; align-content: start;
}
.dv-label {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--green);
}
.dv-flow { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.dv-node {
  border: 1px solid var(--line-strong); background: var(--bg-raise);
  color: var(--text); border-radius: 999px; padding: 7px 15px;
  font-size: 13px; font-weight: 600;
}
.dv-node.done { border-color: rgba(62, 230, 149, 0.4); color: var(--green-bright); background: var(--green-soft); }
.dv-arrow { color: var(--faint); font-size: 14px; }
.dv-note { color: var(--muted); font-size: 13.5px; line-height: 1.6; }
.dv-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.dv-chips span {
  font-family: var(--font-mono); font-size: 11.5px; color: var(--faint);
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px;
}
.dv-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.dv-stat { background: var(--bg-raise); border: 1px solid var(--line); border-radius: 12px; padding: 16px 14px; }
.dv-stat strong { display: block; font-size: clamp(22px, 2.2vw, 30px); letter-spacing: -0.03em; color: var(--green-bright); line-height: 1.1; }
.dv-stat span { display: block; margin-top: 6px; font-size: 12px; color: var(--faint); line-height: 1.5; }
.dv-pill {
  justify-self: start; max-width: 100%;
  font-family: var(--font-mono); font-size: 12px; color: var(--warn);
  border: 1px dashed rgba(229, 170, 100, 0.4); background: rgba(229, 170, 100, 0.06);
  border-radius: 999px; padding: 8px 16px;
}
.dv-scale { display: grid; gap: 10px; padding-top: 8px; }
.dvs-bar {
  position: relative; height: 10px; border-radius: 999px;
  background: linear-gradient(90deg, var(--danger), var(--warn) 45%, var(--green-bright));
}
.dvs-mark {
  position: absolute; left: 68%; top: -6px; bottom: -6px; width: 2px;
  background: var(--text); box-shadow: 0 0 8px rgba(255, 255, 255, 0.45);
}
.dvs-mark::after {
  content: "the gate · 7+";
  position: absolute; top: -24px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-mono); font-size: 10.5px; color: var(--text);
  white-space: nowrap; letter-spacing: 0.08em;
}
.dvs-legend {
  display: flex; justify-content: space-between;
  font-family: var(--font-mono); font-size: 11.5px;
}
.dvs-legend .dvs-bad { color: var(--danger); }
.dvs-legend .dvs-good { color: var(--green-bright); }

/* ============ responsive ============ */
@media (max-width: 1240px) {
  .rail { display: none; }
}
@media (max-width: 1020px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-copy { text-align: center; }
  .hero-sub { margin-inline: auto; }
  .cta-row { justify-content: center; }
  .hero-chips { justify-content: center; }
  .modes-grid { grid-template-columns: 1fr; max-width: 620px; margin-inline: auto; }
  .sec-grid { grid-template-columns: repeat(2, 1fr); }
  .dl-grid { grid-template-columns: 1fr; max-width: 480px; margin-inline: auto; }
  .deep { grid-template-columns: 1fr; gap: 26px; margin-top: 56px; }
  .deep.flip .deep-copy { order: 1; }
  .deep.flip .deep-visual { order: 2; }
  .deep-list { grid-template-columns: 1fr; }
  .dv-stats { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; background: rgba(8, 10, 15, 0.97);
    backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    padding: 14px 24px 20px; gap: 2px;
    transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: opacity 0.2s, transform 0.2s;
  }
  .nav-links.open { opacity: 1; transform: none; pointer-events: auto; }
  .nav-links a { padding: 12px 10px; font-size: 16px; }
  .nav-burger { display: flex; }
  .nav-actions .ver-pill { display: none; }
  .nav-inner { gap: 14px; }

  .section { padding: 72px 0 8px; }
  .kinetic { padding: 76px 20px 20px; }
  .sec-grid { grid-template-columns: 1fr; }
  .flow-node { min-width: 100%; opacity: 1; }
  .flow-arrow { transform: rotate(90deg); }
  .mode-table { font-size: 13px; }
  .mode-table th, .mode-table td { padding: 10px 12px; }
  .container { width: calc(100% - 36px); }
  .nav-inner { width: calc(100% - 36px); }
  .plan-card { max-width: 480px; margin-inline: auto; width: 100%; }
  .undo-chip { right: 14px; bottom: 14px; }
}

/* ============ reduced motion ============ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .js [data-reveal] { opacity: 1; transform: none; }
  .flow-node { opacity: 1; }
  .arch-repair { opacity: 1; }
  .cap-track, .marquee-track { animation: none; }
  #hexField { opacity: 0.3; }
}