/* ============================================================
   ReSynch Cloud — Public Site (Sleek Dark Mode)
   Grounded in AMDF tokens: emerald(private) / indigo(remote) /
   amber(telemetry) reused as GLOW accents on a control-room dark base.
   ============================================================ */

:root {
  /* --- Surfaces (Midnight, default) --- */
  --bg: #080A10;
  --bg-deep: #05060A;
  --panel: #0E1219;
  --panel-soft: #11161F;
  --panel-inset: #0A0D13;
  --panel-raise: #151B26;
  --line: rgba(255,255,255,0.075);
  --line-soft: rgba(255,255,255,0.045);
  --line-strong: rgba(255,255,255,0.15);

  /* --- Type --- */
  --ink: #EEF1F6;
  --ink-2: #C5CBD6;
  --ink-3: #969DAB;
  --mute: #6A7180;
  --mute-2: #474D5A;

  /* --- Accents (glow) --- */
  --emerald: #34E0AE;        /* Zero-Access / data sovereignty (private) */
  --emerald-deep: #16847A;
  --emerald-dim: rgba(52,224,174,0.13);
  --blue: #5B9CFF;           /* orchestration / remote dispatch (remote) */
  --blue-deep: #3A6FE0;
  --blue-dim: rgba(91,156,255,0.13);
  --amber: #F2C14E;          /* HITL / attention (telemetry) */
  --amber-deep: #B17A1F;
  --amber-dim: rgba(242,193,78,0.13);
  --red: #F2706E;
  --red-dim: rgba(242,112,110,0.13);

  --accent: var(--blue);     /* primary brand accent */
  --accent-2: var(--emerald);
  --accent-dim: var(--blue-dim);
  --focus: #5B9CFF;

  /* --- Radii --- */
  --r-xs: 4px;
  --r-sm: 6px;
  --r-md: 9px;
  --r-lg: 13px;
  --r-xl: 18px;
  --r-2xl: 26px;

  /* --- Shadows / glows --- */
  --shadow-card: 0 1px 0 rgba(255,255,255,0.03) inset, 0 18px 48px -28px rgba(0,0,0,0.9);
  --shadow-pop: 0 24px 64px -24px rgba(0,0,0,0.85), 0 2px 8px -4px rgba(0,0,0,0.6);
  --glow-blue: 0 0 0 1px rgba(91,156,255,0.35), 0 0 28px -6px rgba(91,156,255,0.55);
  --glow-emerald: 0 0 0 1px rgba(52,224,174,0.35), 0 0 28px -6px rgba(52,224,174,0.5);

  /* --- Type families --- */
  --sans: "Geist", "Inter", "Noto Sans JP", system-ui, sans-serif;
  --mono: "Geist Mono", "JetBrains Mono", ui-monospace, monospace;
  --jp: "Noto Sans JP", "Geist", sans-serif;

  --maxw: 1200px;
  --nav-h: 64px;
}

/* --- Dark intensity variants (tweak) --- */
body[data-shade="obsidian"] {
  --bg: #0A0B0D; --bg-deep: #060607; --panel: #121419; --panel-soft: #15171D;
  --panel-inset: #0D0E12; --panel-raise: #181B22;
}
body[data-shade="graphite"] {
  --bg: #101319; --bg-deep: #0A0C11; --panel: #171B23; --panel-soft: #1B2029;
  --panel-inset: #12151B; --panel-raise: #20262F;
  --line: rgba(255,255,255,0.085);
}

/* --- Primary accent variants (tweak) --- */
body[data-accent="emerald"] { --accent: var(--emerald); --focus: var(--emerald);
  --glow-accent: var(--glow-emerald); --accent-dim: var(--emerald-dim); }
body[data-accent="amber"] { --accent: var(--amber); --focus: var(--amber); --accent-dim: var(--amber-dim); }
body[data-accent="gold"] { --accent: #EAC224; --accent-2: #EAC224; --focus: #EAC224; --accent-dim: rgba(234,194,36,.18);
  --glow-accent: 0 0 0 1px rgba(234,194,36,.4), 0 0 26px -6px rgba(234,194,36,.6); }
body { --glow-accent: var(--glow-blue); }
body[data-accent="emerald"] { --glow-accent: var(--glow-emerald); }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg); color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv01";
}
body { overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
::selection { background: rgba(91,156,255,0.28); color: #fff; }

/* page ambient field */
.page-field {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(900px 520px at 78% -8%, rgba(91,156,255,0.10), transparent 60%),
    radial-gradient(760px 480px at 6% 8%, rgba(52,224,174,0.07), transparent 62%);
}
.page-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: 0.5;
  background-image:
    linear-gradient(rgba(255,255,255,0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 35%, transparent 80%);
          mask-image: radial-gradient(120% 90% at 50% 0%, #000 35%, transparent 80%);
}
main, nav, footer { position: relative; z-index: 1; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
section { position: relative; }

/* ============ Type utilities ============ */
.mono { font-family: var(--mono); font-feature-settings: "ss01","cv11","zero"; }
.jp { font-family: var(--jp); }
.stencil {
  font-family: var(--mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--mute);
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.13em;
  text-transform: uppercase; color: var(--ink-3);
  padding: 6px 12px 6px 11px; border: 1px solid var(--line);
  border-radius: 999px; background: rgba(255,255,255,0.018);
  backdrop-filter: blur(4px);
}
.eyebrow .pip {
  width: 6px; height: 6px; border-radius: 999px; background: var(--accent-2);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-2) 22%, transparent),
              0 0 12px var(--accent-2);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.35} }

.section-kicker {
  display: flex; align-items: center; gap: 14px; margin-bottom: 22px;
}
.section-kicker .num {
  font-family: var(--mono); font-size: 12px; color: var(--accent);
  letter-spacing: .1em;
}
.section-kicker .ln { flex: 1; height: 1px; background: var(--line); }
.section-kicker .lbl {
  font-family: var(--mono); font-size: 11px; letter-spacing: .18em;
  text-transform: uppercase; color: var(--mute);
}

h1,h2,h3 { margin: 0; font-weight: 600; letter-spacing: -0.02em; line-height: 1.06; }
.display {
  font-size: clamp(34px, 4.3vw, 54px); font-weight: 600;
  letter-spacing: -0.035em; line-height: 1.08;
}
.h-sec { font-size: clamp(28px, 3.6vw, 46px); letter-spacing: -0.025em; line-height: 1.08; }
.lede { color: var(--ink-2); font-size: clamp(15px, 1.25vw, 18px); line-height: 1.65; }
.text-grad {
  background: linear-gradient(180deg, #fff 30%, #aeb6c4 130%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.accent-ink { color: var(--accent); }
.emerald-ink { color: var(--emerald); }
.amber-ink { color: var(--amber); }

/* ---- Wrapping hygiene (balance headings, avoid orphans, CJK-aware) ---- */
h1, h2, h3, .display, .h-sec, .vp-title, .uc-card h3, .feature-card h3,
.mode-card h3, .pillar h3, .tier-tag, .fc-brief-title, .section-kicker {
  text-wrap: balance;
}
p, .lede, li, .feature-card p, .mc-desc, .uc-card p, .pillar p,
.compare-list li, .vp-list li, .tier-feats li, .step p, .bnode small {
  text-wrap: pretty;
}
:lang(ja), .jp { line-break: strict; overflow-wrap: normal; word-break: auto-phrase; }

/* ============ Buttons ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 20px; border-radius: var(--r-md);
  border: 1px solid var(--line-strong); background: rgba(255,255,255,0.03);
  color: var(--ink); font-size: 14px; font-weight: 500; cursor: pointer;
  transition: all .16s ease; white-space: nowrap; font-family: var(--sans);
}
.btn:hover { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.22); transform: translateY(-1px); }
.btn svg { width: 15px; height: 15px; }
.btn-primary {
  background: linear-gradient(180deg, color-mix(in srgb,var(--accent) 92%,#fff), var(--accent));
  color: #051018; border-color: transparent; font-weight: 600;
  box-shadow: var(--glow-accent);
}
.btn-primary:hover { box-shadow: var(--glow-accent), 0 8px 26px -8px color-mix(in srgb,var(--accent) 70%, transparent); filter: brightness(1.05); }
.btn-ghost { background: transparent; border-color: var(--line); }
.btn-sm { height: 36px; padding: 0 14px; font-size: 13px; }
.btn-lg { height: 50px; padding: 0 26px; font-size: 15px; }

/* ============ Badges / pills ============ */
.mode-badge {
  display: inline-flex; align-items: center; gap: 7px; height: 24px; padding: 0 10px;
  border-radius: 999px; font-size: 11.5px; font-weight: 600; letter-spacing: .01em;
  border: 1px solid var(--line); background: rgba(255,255,255,0.025); color: var(--ink-2);
  font-family: var(--mono);
}
.mode-badge .dot { width: 6px; height: 6px; border-radius: 999px; background: var(--mute-2); }
.mode-badge.private { color: var(--emerald); border-color: color-mix(in srgb,var(--emerald) 30%, transparent); background: var(--emerald-dim); }
.mode-badge.private .dot { background: var(--emerald); box-shadow: 0 0 8px var(--emerald); }
.mode-badge.remote  { color: var(--blue); border-color: color-mix(in srgb,var(--blue) 30%, transparent); background: var(--blue-dim); }
.mode-badge.remote .dot { background: var(--blue); box-shadow: 0 0 8px var(--blue); }
.mode-badge.telemetry { color: var(--amber); border-color: color-mix(in srgb,var(--amber) 30%, transparent); background: var(--amber-dim); }
.mode-badge.telemetry .dot { background: var(--amber); box-shadow: 0 0 8px var(--amber); }

.status-pill {
  display: inline-flex; align-items: center; gap: 6px; height: 22px; padding: 0 9px;
  border-radius: 999px; font-size: 11px; font-weight: 600; font-family: var(--mono);
  border: 1px solid var(--line); background: rgba(255,255,255,0.025); color: var(--ink-3);
}
.status-pill .dot { width: 6px; height: 6px; border-radius: 999px; background: var(--mute-2); }
.status-pill.ok { color: var(--emerald); border-color: color-mix(in srgb,var(--emerald) 28%,transparent); }
.status-pill.ok .dot { background: var(--emerald); box-shadow: 0 0 6px var(--emerald); }
.status-pill.run { color: var(--blue); border-color: color-mix(in srgb,var(--blue) 28%,transparent); }
.status-pill.run .dot { background: var(--blue); box-shadow: 0 0 6px var(--blue); animation: pulse 1.4s infinite; }
.status-pill.wait { color: var(--amber); border-color: color-mix(in srgb,var(--amber) 28%,transparent); }
.status-pill.wait .dot { background: var(--amber); box-shadow: 0 0 6px var(--amber); }

/* ============ Cards / control-room framing ============ */
.glass {
  background: linear-gradient(180deg, rgba(255,255,255,0.035), rgba(255,255,255,0.012));
  border: 1px solid var(--line); border-radius: var(--r-lg);
  box-shadow: var(--shadow-card);
}
.glass::before, .corner-frame::before { content: ""; }
.glow-top {
  position: relative;
}
.glow-top::after {
  content: ""; position: absolute; left: 14%; right: 14%; top: -1px; height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb,var(--accent) 70%,transparent), transparent);
  opacity: .8;
}

.corner-frame {
  position: relative;
  background: linear-gradient(180deg, var(--panel-soft), var(--panel-inset));
  border: 1px solid var(--line); border-radius: var(--r-lg);
}
.corner-frame .ct, .corner-frame .cb {
  position: absolute; width: 12px; height: 12px; border: 1.5px solid var(--accent);
  opacity: .55;
}
.corner-frame .ct { top: 9px; left: 9px; border-right: 0; border-bottom: 0; }
.corner-frame .cb { bottom: 9px; right: 9px; border-left: 0; border-top: 0; }

/* ============ Station lamp / conveyor belt ============ */
.station-lamp {
  width: 9px; height: 9px; border-radius: 999px; background: var(--mute-2);
  flex: none; position: relative;
}
.station-lamp.done { background: var(--emerald); box-shadow: 0 0 0 3px var(--emerald-dim), 0 0 12px var(--emerald); }
.station-lamp.running { background: var(--blue); box-shadow: 0 0 0 3px var(--blue-dim), 0 0 12px var(--blue); animation: pulse 1.3s infinite; }
.station-lamp.waiting { background: var(--amber); box-shadow: 0 0 0 3px var(--amber-dim), 0 0 12px var(--amber); }

.belt {
  height: 3px; border-radius: 999px; background: rgba(255,255,255,0.07);
  position: relative; overflow: hidden;
}
.belt.live::after {
  content: ""; position: absolute; inset: 0;
  background: repeating-linear-gradient(90deg, transparent 0 8px,
    color-mix(in srgb,var(--accent) 65%, transparent) 8px 14px);
  background-size: 22px 100%;
  animation: belt-flow 0.7s linear infinite;
}
@keyframes belt-flow { to { background-position: 22px 0; } }

/* ============ Public beta / note annotation ============ */
.gate-flag {
  display: none; align-items: center; gap: 5px; vertical-align: middle;
  height: 19px; padding: 0 7px; margin-left: 7px; border-radius: 5px;
  font-family: var(--mono); font-size: 10px; font-weight: 600; letter-spacing: .04em;
  color: var(--amber); background: var(--amber-dim);
  border: 1px dashed color-mix(in srgb, var(--amber) 45%, transparent);
  cursor: default; position: relative; white-space: nowrap;
}
body[data-gate="on"] .gate-flag { display: inline-flex; }
.gate-flag::before { content: "◳"; font-size: 11px; line-height: 1; }
.gate-flag .gate-tip {
  display: none; position: absolute; bottom: calc(100% + 8px); left: 50%;
  transform: translateX(-50%); width: 248px; padding: 10px 12px; z-index: 40;
  background: var(--panel-raise); border: 1px solid var(--line-strong);
  border-radius: var(--r-md); box-shadow: var(--shadow-pop);
  font-family: var(--sans); font-size: 11.5px; line-height: 1.5; letter-spacing: 0;
  color: var(--ink-2); text-transform: none; font-weight: 400; white-space: normal;
}
.gate-flag:hover .gate-tip { display: block; }
.gate-flag .gate-tip b { color: var(--amber); font-weight: 600; }
/* underline gated claims subtly */
body[data-gate="on"] .gated {
  text-decoration: underline; text-decoration-style: dotted;
  text-decoration-color: color-mix(in srgb,var(--amber) 55%, transparent);
  text-underline-offset: 5px;
}

/* ============ Nav ============ */
.nav {
  position: sticky; top: 0; z-index: 50; height: var(--nav-h);
  display: flex; align-items: center;
  border-bottom: 1px solid transparent; transition: all .2s ease;
}
.nav.scrolled {
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
  border-bottom-color: var(--line);
}
.nav .wrap { display: flex; align-items: center; gap: 24px; width: 100%; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 15.5px; letter-spacing: -0.01em; }
.brand .logo {
  width: 27px; height: 27px; border-radius: 7px; flex: none; position: relative;
  background: linear-gradient(150deg, #F6D659 0%, #EAC224 52%, #C99A0E 100%);
  box-shadow: 0 2px 10px -2px rgba(234,194,36,0.6), inset 0 1px 0 rgba(255,255,255,0.45);
}
.brand .logo::after {
  content: "R"; position: absolute; inset: 0;
  display: grid; place-items: center;
  color: #1c1605; font-family: var(--sans); font-weight: 700; font-size: 16px; line-height: 1;
  letter-spacing: -0.02em;
}
.brand small { color: #B58A12; font-weight: 600; font-family: var(--mono); font-size: 10px; letter-spacing: .1em; }
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: 12px; }
.nav-links a {
  padding: 8px 13px; border-radius: var(--r-sm); font-size: 13.5px; color: var(--ink-3);
  transition: all .14s; font-weight: 500;
}
.nav-links a:hover { color: var(--ink); background: rgba(255,255,255,0.04); }
.nav-links a.active { color: var(--ink); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }

/* language toggle */
.lang-toggle {
  display: inline-flex; padding: 2px; gap: 2px; border: 1px solid var(--line);
  border-radius: 999px; background: rgba(255,255,255,0.03);
}
.lang-toggle button {
  border: 0; background: transparent; color: var(--mute); cursor: pointer;
  font-family: var(--mono); font-size: 11px; font-weight: 600; letter-spacing: .05em;
  height: 26px; padding: 0 11px; border-radius: 999px; transition: all .14s;
}
.lang-toggle button.on { background: var(--ink); color: var(--bg-deep); }

/* ============ Bilingual visibility ============ */
.lang-en { display: none; }
body.i18n-en .lang-ja { display: none; }
body.i18n-en .lang-en { display: revert; }
/* inline variants */
span.lang-ja, span.lang-en, b.lang-ja, b.lang-en { display: inline; }
body.i18n-en span.lang-ja, body.i18n-en b.lang-ja { display: none; }
span.lang-en, b.lang-en { display: none; }
body.i18n-en span.lang-en, body.i18n-en b.lang-en { display: inline; }

/* ============ Copy-tone (North Star <-> safe) ============ */
.tone-safe { display: none; }
body[data-tone="safe"] .tone-ns { display: none; }
body[data-tone="safe"] .tone-safe { display: revert; }
span.tone-safe, b.tone-safe { display: none; }
span.tone-ns, b.tone-ns { display: inline; }
body[data-tone="safe"] span.tone-ns, body[data-tone="safe"] b.tone-ns { display: none; }
body[data-tone="safe"] span.tone-safe, body[data-tone="safe"] b.tone-safe { display: inline; }

/* ============ Hero angle variants (tweak) ============ */
.hero-variant { display: none; }
body[data-hero="declaration"] .hv-declaration { display: block; }
body[data-hero="operator"]    .hv-operator    { display: block; }
body[data-hero="accountability"] .hv-accountability { display: block; }

/* ============ Generic layout helpers ============ */
.grid { display: grid; gap: 20px; }
.cols-2 { grid-template-columns: 1fr 1fr; }
.cols-3 { grid-template-columns: repeat(3,1fr); }
.cols-4 { grid-template-columns: repeat(4,1fr); }
.feature-card {
  padding: 26px; border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(255,255,255,0.032), rgba(255,255,255,0.008));
  border: 1px solid var(--line); position: relative; overflow: hidden;
  transition: border-color .18s, transform .18s, background .18s;
}
.feature-card:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.feature-card .ico {
  width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center;
  margin-bottom: 16px; color: var(--accent); background: rgba(255,255,255,0.04);
  border: 1px solid var(--line);
}
.feature-card .ico svg { width: 20px; height: 20px; }
.feature-card h3 { font-size: 18px; margin-bottom: 9px; letter-spacing: -0.01em; }
.feature-card p { margin: 0; color: var(--ink-3); font-size: 14px; line-height: 1.6; }

/* section spacing */
.sec-pad { padding: clamp(72px, 9vw, 130px) 0; }
.sec-pad-sm { padding: clamp(48px, 6vw, 80px) 0; }

/* footer */
.foot { border-top: 1px solid var(--line); padding: 64px 0 40px; margin-top: 40px; background: var(--bg-deep); }
.foot-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.foot h4 { font-family: var(--mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--mute); margin: 0 0 16px; font-weight: 500; }
.foot a { display: block; color: var(--ink-3); font-size: 13.5px; padding: 5px 0; transition: color .14s; }
.foot a:hover { color: var(--ink); }
.foot-bottom { display: flex; align-items: center; justify-content: space-between; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--mute); font-size: 12.5px; }
.foot-legal { display: flex; gap: 18px; flex-wrap: wrap; }
.foot-legal a { font-size: 12.5px; padding: 0; }

/* CTA band */
.cta-band {
  position: relative; overflow: hidden; border-radius: var(--r-2xl);
  border: 1px solid var(--line); padding: clamp(40px,6vw,72px);
  background:
    radial-gradient(680px 360px at 80% 120%, rgba(52,224,174,0.14), transparent 60%),
    radial-gradient(680px 380px at 12% -20%, rgba(91,156,255,0.16), transparent 60%),
    linear-gradient(180deg, var(--panel-soft), var(--panel-inset));
  text-align: center;
}

/* anim reveal */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; }
  .belt.live::after, .station-lamp.running, .eyebrow .pip { animation: none !important; }
}

/* ============ Tweaks panel (custom, multi-page) ============ */
#tw-fab {
  position: fixed; right: 18px; bottom: 18px; z-index: 90; display: none;
  height: 40px; padding: 0 15px; align-items: center; gap: 8px;
  border-radius: 999px; border: 1px solid var(--line-strong);
  background: var(--panel-raise); color: var(--ink); cursor: pointer;
  font-family: var(--mono); font-size: 12px; letter-spacing: .04em;
  box-shadow: var(--shadow-pop);
}
#tw-fab.show { display: inline-flex; }
#tw-fab .dot { width: 7px; height: 7px; border-radius: 999px; background: var(--accent); box-shadow: 0 0 8px var(--accent); }
#tw-panel {
  position: fixed; right: 18px; bottom: 18px; z-index: 95; width: 300px; display: none;
  background: var(--panel-raise); border: 1px solid var(--line-strong);
  border-radius: var(--r-lg); box-shadow: var(--shadow-pop); overflow: hidden;
}
#tw-panel.show { display: block; }
.tw-head { display: flex; align-items: center; justify-content: space-between; padding: 13px 14px; border-bottom: 1px solid var(--line); }
.tw-head b { font-size: 13px; font-weight: 600; }
.tw-head .mono { font-size: 10px; color: var(--mute); }
.tw-x { border: 0; background: transparent; color: var(--mute); cursor: pointer; font-size: 17px; line-height: 1; padding: 2px 4px; }
.tw-x:hover { color: var(--ink); }
.tw-body { padding: 6px 14px 16px; max-height: 70vh; overflow-y: auto; }
.tw-row { padding: 13px 0; border-bottom: 1px solid var(--line-soft); }
.tw-row:last-child { border-bottom: 0; }
.tw-row > label { display: block; font-size: 12px; font-weight: 600; color: var(--ink-2); margin-bottom: 9px; }
.tw-seg { display: flex; gap: 4px; }
.tw-seg button {
  flex: 1; height: 30px; border: 1px solid var(--line); background: rgba(255,255,255,0.02);
  color: var(--ink-3); border-radius: var(--r-sm); cursor: pointer; font-size: 11.5px;
  font-family: var(--sans); transition: all .13s; padding: 0 4px;
}
.tw-seg button.on { background: var(--ink); color: var(--bg-deep); border-color: var(--ink); font-weight: 600; }
.tw-swatches { display: flex; gap: 8px; }
.tw-swatch { width: 30px; height: 30px; border-radius: 999px; border: 2px solid var(--line); cursor: pointer; }
.tw-swatch.on { border-color: var(--ink); box-shadow: 0 0 0 2px var(--bg-deep), 0 0 0 4px currentColor; }
.tw-toggle { display: flex; align-items: center; justify-content: space-between; }
.tw-switch { width: 38px; height: 22px; border-radius: 999px; background: var(--mute-2); border: 0; cursor: pointer; position: relative; transition: background .15s; flex: none; }
.tw-switch.on { background: var(--accent); }
.tw-switch::after { content: ""; position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 999px; background: #fff; transition: transform .15s; }
.tw-switch.on::after { transform: translateX(16px); }

/* ============ Responsive ============ */
@media (max-width: 920px) {
  .wrap { padding: 0 20px; }
  .cols-2, .cols-3, .cols-4, .foot-top { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .foot-top { gap: 28px; }
}

/* =====================================================================
   LIGHT THEME (hybrid) — institutional light frame, dark showcase panels
   Default theme. Dark remains available via the Theme tweak.
   ===================================================================== */
body[data-theme="light"] {
  --bg: #F7F6F2; --bg-deep: #EFEDE7; --panel: #FFFFFF; --panel-soft: #FBFAF7;
  --panel-inset: #F2F0EA; --panel-raise: #FFFFFF;
  --line: rgba(17,17,17,0.10); --line-soft: rgba(17,17,17,0.055); --line-strong: rgba(17,17,17,0.17);
  --ink: #16181D; --ink-2: #3A3D44; --ink-3: #5A5E68; --mute: #898E98; --mute-2: #B6BAC2;
  --emerald: #0E8A6E; --emerald-deep: #0B6B56; --emerald-dim: rgba(14,138,110,0.11);
  --blue: #2A6FDB; --blue-deep: #1F56B0; --blue-dim: rgba(42,111,219,0.10);
  --amber: #B07D16; --amber-deep: #8A6212; --amber-dim: rgba(193,138,28,0.15);
  --red: #C5403E; --red-dim: rgba(197,64,62,0.10);
  --accent: var(--blue); --accent-2: var(--emerald); --focus: var(--blue); --accent-dim: var(--blue-dim);
  --shadow-card: 0 1px 2px rgba(17,17,17,.045), 0 14px 30px -20px rgba(17,17,17,.18);
  --shadow-pop: 0 26px 60px -22px rgba(17,17,17,.30), 0 2px 8px -4px rgba(17,17,17,.12);
  --glow-blue: 0 0 0 1px rgba(42,111,219,0.16), 0 12px 26px -12px rgba(42,111,219,0.45);
  --glow-emerald: 0 0 0 1px rgba(14,138,110,0.16), 0 12px 26px -12px rgba(14,138,110,0.40);
  --glow-accent: var(--glow-blue);
}
body[data-theme="light"][data-accent="emerald"] { --accent: var(--emerald); --focus: var(--emerald); --glow-accent: var(--glow-emerald); --accent-dim: var(--emerald-dim); }
body[data-theme="light"][data-accent="amber"]   { --accent: var(--amber); --focus: var(--amber); --accent-dim: var(--amber-dim); }
body[data-theme="light"][data-accent="gold"]    { --accent: #EAC224; --accent-2: #C9A21A; --focus: #EAC224; --accent-dim: rgba(234,194,36,.16);
  --glow-accent: 0 0 0 1px rgba(234,194,36,.5), 0 10px 24px -10px rgba(234,194,36,.5); }
/* gold on light: keep fills/buttons pure brand gold, but thin text uses a readable deeper gold */
body[data-theme="light"][data-accent="gold"] .btn-primary { color: #231a02; }
body[data-theme="light"][data-accent="gold"] .accent-ink { color: #C9A21A; }
body[data-theme="light"][data-accent="gold"] .section-kicker .num,
body[data-theme="light"][data-accent="gold"] .vp-link { color: #A8800C; }

/* page ambient — gentler on light */
body[data-theme="light"] .page-field {
  background:
    radial-gradient(900px 520px at 80% -10%, rgba(42,111,219,0.06), transparent 60%),
    radial-gradient(760px 480px at 4% 6%, rgba(14,138,110,0.05), transparent 62%);
}
body[data-theme="light"] .page-grid {
  background-image:
    linear-gradient(rgba(17,17,17,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17,17,17,0.035) 1px, transparent 1px);
  opacity: .55;
}
body[data-theme="light"] .text-grad {
  background: linear-gradient(180deg, #16181D 16%, #4A4F58 132%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
body[data-theme="light"] .eyebrow { background: #fff; box-shadow: var(--shadow-card); }
body[data-theme="light"] .btn { background: #fff; border-color: var(--line-strong); }
body[data-theme="light"] .btn:hover { background: var(--panel-inset); }
body[data-theme="light"] .btn-primary { background: var(--accent); color: #fff; border-color: transparent; box-shadow: var(--glow-accent); }
body[data-theme="light"] .btn-primary:hover { filter: brightness(1.04); }
body[data-theme="light"] .btn-ghost { background: transparent; }
body[data-theme="light"] .nav-links a:hover { background: rgba(17,17,17,0.05); }
body[data-theme="light"] .feature-card,
body[data-theme="light"] .glass { background: #fff; box-shadow: var(--shadow-card); }
body[data-theme="light"] .feature-card .ico { background: var(--panel-inset); }
body[data-theme="light"] .cta-band {
  background:
    radial-gradient(680px 360px at 82% 120%, rgba(14,138,110,0.09), transparent 60%),
    radial-gradient(680px 380px at 12% -20%, rgba(42,111,219,0.11), transparent 60%),
    #ffffff;
  box-shadow: var(--shadow-card);
}

/* ---- Showcase panel: cohesive LIGHT instrument panel (no jarring dark-in-light) ---- */
body[data-theme="light"] .dark-panel {
  background: linear-gradient(180deg, #FFFFFF, var(--panel-soft));
  border-color: var(--line);
  box-shadow: var(--shadow-card);
}
/* sub-surfaces inside showcase panels need a touch of definition on light */
body[data-theme="light"] .dark-panel .belt { background: rgba(17,17,17,0.08); }
body[data-theme="light"] .fc-brief,
body[data-theme="light"] .after-row,
body[data-theme="light"] .bnode,
body[data-theme="light"] .pchain-node + .pchain-link { background: var(--panel-inset); }
body[data-theme="light"] .after-row { border-color: var(--line); }