/* ============================================================
   ANIMA — landing page · "The Drift"
   ONE seamless, flowing ground. A few warm colours melting into
   one another, drifting gradually top→bottom. No section bands.
   Palette is swappable (Tweaks). Light type on rich ground.
   ============================================================ */

:root {
  --cream: #f3e8d2;
  --paper: #f7eeda;

  /* Light type on rich ground */
  --on: #f6ecd8;
  --on-soft: rgba(246, 236, 216, 0.74);
  --on-faint: rgba(246, 236, 216, 0.48);
  --on-whisper: rgba(246, 236, 216, 0.18);

  --font-groove: 'Shrikhand', 'Cooper BT', 'Yeseva One', Georgia, serif;
  --font-display: 'Yeseva One', 'Cooper BT', Georgia, serif;
  --font-body: 'Nunito', -apple-system, system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  --maxw: 1180px;
  --measure: 620px;
}

/* ---- PALETTES (swappable via Tweaks → body[data-palette]) ---------------- */
/* Each defines a 5-stop seamless ground (bg1→bg5, deep→warm→deep) plus three
   glow voices used for flowing light, headline gradient, and accents. */
body[data-palette="terracotta"] {
  --bg1:#2e1813; --bg2:#3a2017; --bg3:#46271c; --bg4:#4f2d20; --bg5:#371e17;
  --glow1:#e8b25a; --glow2:#d3764a; --glow3:#b5523a;
  --accent:#ec7a3c;
}
body[data-palette="violet"] {
  --bg1:#140a26; --bg2:#241140; --bg3:#371a52; --bg4:#4a1f5e; --bg5:#180e30;
  --glow1:#c98bff; --glow2:#ff5a9e; --glow3:#7a44c8;
  --accent:#ff2e9a;
}
body[data-palette="indigo"] {
  --bg1:#07151f; --bg2:#0c2533; --bg3:#103443; --bg4:#124152; --bg5:#081823;
  --glow1:#54ecdd; --glow2:#39a8ff; --glow3:#2f7fb5;
  --accent:#2fe0d0;
}
body[data-palette="plum"] {
  --bg1:#1f0c20; --bg2:#341430; --bg3:#4a1d3a; --bg4:#5e2440; --bg5:#220e22;
  --glow1:#ffa15a; --glow2:#ff5a8a; --glow3:#b5466a;
  --accent:#ff5a8a;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  color: var(--on);
  overflow-x: hidden;
  line-height: 1.62;
  background-color: var(--bg1);
  /* the single, seamless drift — stretched across the whole document */
  background-image: linear-gradient(180deg,
    var(--bg1) 0%, var(--bg2) 25%, var(--bg3) 50%, var(--bg4) 76%, var(--bg5) 100%);
  background-size: 100% 100%;
  background-repeat: no-repeat;
}

/* ---- Flowing liquid light (fixed, drifts behind everything) ---- */
#flow { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; will-change: transform; }
.fl { position: absolute; border-radius: 50%; mix-blend-mode: screen; }
.fl-a { width: 58vmin; height: 58vmin; left: 6%;  top: 4%;   background: radial-gradient(circle, var(--glow1), transparent 68%); opacity:.24; filter: blur(60px); animation: fl-a 26s ease-in-out infinite; }
.fl-b { width: 50vmin; height: 50vmin; right: 2%;  top: 16%;  background: radial-gradient(circle, var(--glow2), transparent 68%); opacity:.2;  filter: blur(66px); animation: fl-b 32s ease-in-out infinite; }
.fl-c { width: 68vmin; height: 68vmin; left: 22%; top: 50%;  background: radial-gradient(circle, var(--glow3), transparent 70%); opacity:.18; filter: blur(72px); animation: fl-c 29s ease-in-out infinite; }
.fl-d { width: 46vmin; height: 46vmin; right: 16%; bottom: 4%; background: radial-gradient(circle, var(--glow1), transparent 68%); opacity:.18; filter: blur(64px); animation: fl-d 36s ease-in-out infinite; }
.fl-e { width: 40vmin; height: 40vmin; left: 48%; top: 28%;  background: radial-gradient(circle, var(--glow2), transparent 70%); opacity:.16; filter: blur(56px); animation: fl-e 24s ease-in-out infinite; }
@keyframes fl-a { 0%,100%{transform:translate(0,0) scale(1)} 50%{transform:translate(8vw,6vh) scale(1.25)} }
@keyframes fl-b { 0%,100%{transform:translate(0,0) scale(1)} 50%{transform:translate(-7vw,8vh) scale(0.82)} }
@keyframes fl-c { 0%,100%{transform:translate(0,0) scale(1)} 50%{transform:translate(6vw,-7vh) scale(1.18)} }
@keyframes fl-d { 0%,100%{transform:translate(0,0) scale(0.9)} 50%{transform:translate(-6vw,-6vh) scale(1.15)} }
@keyframes fl-e { 0%,100%{transform:translate(0,0) scale(1.05)} 50%{transform:translate(5vw,9vh) scale(0.85)} }

/* Concentric ripple field — the hero ripples, now drifting across the WHOLE
   page (wrapper gets scroll-parallax; field drifts + warps on its own). */
#ripples { position: fixed; inset: -25%; z-index: 0; pointer-events: none; will-change: transform; }
.ripple-field {
  position: absolute; inset: 0;
  background: repeating-radial-gradient(circle at 50% 42%, transparent 0 14px, color-mix(in oklab, var(--glow1) 55%, transparent) 14px 15.6px);
  filter: url(#animaWarp); opacity: 0.16; mix-blend-mode: screen;
  -webkit-mask-image: radial-gradient(circle at 50% 42%, #000 0%, rgba(0,0,0,0.5) 38%, transparent 72%);
          mask-image: radial-gradient(circle at 50% 42%, #000 0%, rgba(0,0,0,0.5) 38%, transparent 72%);
  animation: ripple-drift 46s ease-in-out infinite;
}
@keyframes ripple-drift {
  0%,100% { transform: translate(-4%, -2%) scale(1.05); }
  50%     { transform: translate(5%, 4%) scale(1.2); }
}

/* cosmic motes */
#dust { position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: 0.55; }

/* Page-wide riso grain — gently shimmers */
.page-grain {
  position: fixed; inset: 0; z-index: 60; pointer-events: none;
  mix-blend-mode: soft-light; opacity: 0.5;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='280' height='280'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.62 0 0 0 0 0.56 0 0 0 0 0.46 0 0 0 0.5 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-size: 280px 280px;
  animation: grain-shimmer 6s steps(4) infinite;
}
@keyframes grain-shimmer {
  0%{background-position:0 0} 25%{background-position:-80px 40px}
  50%{background-position:60px -70px} 75%{background-position:-50px -30px} 100%{background-position:0 0}
}

/* ============================================================
   LAYOUT
   ============================================================ */
.section { position: relative; width: 100%; padding: clamp(112px, 16vh, 196px) 24px; z-index: 1; }
.wrap { max-width: var(--maxw); margin: 0 auto; }
.measure { max-width: var(--measure); }

.eyebrow {
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: 3px; text-transform: uppercase; color: var(--accent);
  display: inline-flex; align-items: center; gap: 10px;
  text-shadow: 0 0 18px color-mix(in oklab, var(--accent) 55%, transparent);
}
.eyebrow::before { content: ''; width: 22px; height: 1px; background: currentColor; opacity: 0.7; }

h1, h2, h3 { font-weight: 400; line-height: 1.04; text-wrap: balance; }

.section-h { font-family: var(--font-display); font-size: clamp(30px, 4.6vw, 58px); line-height: 1.02; color: var(--on); }
.section-body { font-size: clamp(17px, 2vw, 20px); color: var(--on-soft); margin-top: 22px; max-width: var(--measure); text-wrap: pretty; }
.section-intro { font-size: clamp(16px, 1.8vw, 19px); color: var(--on-soft); margin-top: 20px; max-width: 600px; text-wrap: pretty; }

/* groovy headline — living gradient drawn from the active palette */
.groove {
  font-family: var(--font-groove);
  background: linear-gradient(100deg, var(--glow1), var(--glow2) 50%, var(--glow3));
  background-size: 220% 100%;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  animation: groove-flow 16s ease-in-out infinite;
}
@keyframes groove-flow { 0%,100%{background-position:0% 50%} 50%{background-position:100% 50%} }

/* ============================================================
   GRAIN HELPER
   ============================================================ */
.grain { position: relative; }
.grain::after {
  content: ''; position: absolute; inset: 0; border-radius: inherit;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='g'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.1 0 0 0 0 0.08 0 0 0 0 0.05 0 0 0 0.5 0'/></filter><rect width='100%' height='100%' filter='url(%23g)'/></svg>");
  mix-blend-mode: overlay; pointer-events: none; opacity: 0.55;
}

/* ============================================================
   EMAIL CAPTURE
   ============================================================ */
.capture { margin-top: 40px; max-width: 480px; }
.capture-field { display: flex; align-items: stretch; gap: 12px; flex-wrap: wrap; }
.capture-input-shell { flex: 1 1 240px; position: relative; display: flex; align-items: center; }
.capture-input {
  width: 100%; background: transparent; border: none;
  border-bottom: 1.5px solid var(--on-whisper); color: var(--on);
  font-family: var(--font-body); font-size: 17px; font-weight: 500; padding: 14px 2px; outline: none;
  transition: border-color 0.4s cubic-bezier(0.22,0.8,0.36,1);
}
.capture-input::placeholder { color: var(--on-faint); }
.capture-input:focus { border-bottom-color: var(--accent); }
.capture-underline { position: absolute; left: 0; bottom: 0; height: 1.5px; width: 0; background: var(--accent); box-shadow: 0 0 14px var(--accent); transition: width 0.5s cubic-bezier(0.22,0.8,0.36,1); }
.capture-input:focus ~ .capture-underline { width: 100%; }
.capture-btn {
  position: relative; flex: 0 0 auto; font-family: var(--font-body); font-weight: 800; font-size: 14px;
  letter-spacing: 0.4px; color: #1c0f0a; background: var(--accent); border: none; border-radius: 999px;
  padding: 15px 26px; white-space: nowrap; cursor: pointer; overflow: hidden;
  transition: transform 0.12s cubic-bezier(0.34,1.2,0.64,1), box-shadow 0.4s ease;
}
.capture-btn:hover { box-shadow: 0 8px 34px -6px var(--accent); transform: translateY(-1px); }
.capture-btn:active { transform: scale(0.97); }
.capture-btn[data-busy="1"] { opacity: 0.7; pointer-events: none; }
.capture-micro { margin-top: 14px; font-size: 13.5px; color: var(--on-soft); }
/* early-tester opt-in checkbox (hero form) */
.capture-check { display: flex; align-items: center; gap: 10px; margin-top: 18px; cursor: pointer; font-size: 14px; color: var(--on-soft); -webkit-user-select: none; user-select: none; }
.capture-check input { appearance: none; -webkit-appearance: none; width: 19px; height: 19px; flex: 0 0 auto; margin: 0; border: 1.5px solid var(--on-whisper); border-radius: 6px; background: transparent; cursor: pointer; position: relative; transition: border-color 0.3s ease, background 0.3s ease; }
.capture-check:hover input { border-color: var(--on-faint); }
.capture-check input:checked { background: var(--accent); border-color: var(--accent); }
.capture-check input:checked::after { content: ''; position: absolute; left: 6px; top: 2.5px; width: 4px; height: 9px; border: solid #1c0f0a; border-width: 0 2px 2px 0; transform: rotate(45deg); }
.capture-check input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.capture-msg { margin-top: 14px; font-size: 14px; font-weight: 600; min-height: 20px; opacity: 0; transform: translateY(4px); transition: opacity 0.45s ease, transform 0.45s cubic-bezier(0.16,1,0.3,1); }
.capture-msg[data-show="1"] { opacity: 1; transform: none; }
.capture-msg[data-kind="ok"]  { color: var(--glow1); }
.capture-msg[data-kind="err"] { color: var(--glow2); }

/* ============================================================
   HERO — type-led, abstract flowing texture behind
   ============================================================ */
.hero { min-height: 92vh; display: flex; align-items: flex-start; padding-top: clamp(64px, 9vh, 104px); padding-bottom: clamp(112px, 16vh, 196px); overflow: hidden; }
.hero-inner { position: relative; z-index: 2; max-width: 880px; }
.hero-mark { display: block; width: clamp(140px, 17vw, 220px); height: auto; margin: 0 0 22px 0; filter: drop-shadow(0 0 34px color-mix(in oklab, var(--glow1) 34%, transparent)); }
.mark-spin { transform-box: view-box; transform-origin: 50% 50%; }
.hero-title { font-size: clamp(54px, 9.5vw, 138px); line-height: 0.9; letter-spacing: -0.5px; margin: 24px 0 8px; }
.hero-sub { font-size: clamp(18px, 2.1vw, 23px); color: var(--on-soft); max-width: 560px; margin-top: 22px; line-height: 1.5; text-wrap: pretty; }

/* (ripple field is global — see #ripples below) */

.scroll-cue { position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%); z-index: 4; display: flex; flex-direction: column; align-items: center; gap: 9px; font-family: var(--font-mono); font-size: 10px; letter-spacing: 2.5px; text-transform: uppercase; color: var(--on-faint); }
.scroll-cue .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); animation: cue-fall 2.2s cubic-bezier(0.45,0,0.55,1) infinite; }
@keyframes cue-fall { 0%{transform:translateY(-6px);opacity:0} 40%{opacity:1} 100%{transform:translateY(14px);opacity:0} }

/* ============================================================
   THE INTEGRATION GAP
   ============================================================ */
.gap-section .section-h { font-size: clamp(34px, 6vw, 88px); letter-spacing: -0.5px; line-height: 0.96; }

/* ============================================================
   THE ARC
   ============================================================ */
.arc-head { text-align: center; max-width: 720px; margin: 0 auto; }
.arc-head .section-h { font-size: clamp(30px, 5vw, 64px); }
.arc-intro { text-align: center; margin: 20px auto 0; }
.arc-track { position: relative; max-width: 760px; margin: 84px auto 0; padding-left: clamp(44px, 8vw, 96px); }
/* the thread — a liquid line (melting accent, kept) */
.arc-thread {
  position: absolute; left: clamp(18px, 4vw, 44px); top: 0; bottom: 0; width: 3px; z-index: 0; border-radius: 3px;
  background: linear-gradient(180deg, var(--glow1), var(--glow2) 50%, var(--glow3));
  box-shadow: 0 0 22px color-mix(in oklab, var(--glow2) 55%, transparent);
  filter: url(#animaGoo);
}
.arc-pulse { position: absolute; left: 50%; top: 0; width: 12px; height: 12px; margin-left: -6px; border-radius: 50%; background: #fff; box-shadow: 0 0 20px 6px var(--glow1); animation: arc-travel 15s cubic-bezier(0.45,0,0.55,1) infinite; }
@keyframes arc-travel { 0%{top:0;opacity:0} 8%{opacity:1} 92%{opacity:1} 100%{top:100%;opacity:0} }
.arc-stop { position: relative; padding: clamp(26px, 4vh, 46px) 0; }
.anim-ready .arc-stop { opacity: 0; transform: translateY(34px); transition: opacity .9s cubic-bezier(0.16,1,0.3,1), transform .9s cubic-bezier(0.16,1,0.3,1); }
.arc-stop.in { opacity: 1; transform: none; }
.arc-node { position: absolute; left: calc(-1 * clamp(44px, 8vw, 96px) + clamp(18px, 4vw, 44px) - 9px); top: clamp(30px, 4vh, 50px); width: 22px; height: 22px; border-radius: 50%; background: var(--stop, var(--accent)); box-shadow: 0 0 0 5px rgba(255,255,255,0.06), 0 0 26px var(--stop, var(--accent)); z-index: 2; }
.arc-node::after { content: ''; position: absolute; inset: 6px; border-radius: 50%; background: rgba(255,255,255,0.9); opacity: 0.55; }
.arc-label { font-family: var(--font-display); font-size: clamp(22px, 3vw, 34px); color: var(--on); display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.arc-label .when { font-family: var(--font-mono); font-size: 12px; font-weight: 500; letter-spacing: 2px; text-transform: uppercase; color: var(--stop, var(--accent)); }
.arc-text { font-size: clamp(15px, 1.7vw, 18px); color: var(--on-soft); margin-top: 10px; max-width: 460px; text-wrap: pretty; }
.arc-close { max-width: 640px; margin: 78px auto 0; text-align: center; font-family: var(--font-display); font-size: clamp(19px, 2.4vw, 28px); line-height: 1.4; color: var(--on); text-wrap: pretty; }
.arc-close .em { color: var(--glow1); }
/* the arc, paired with the real timeline screen (screenshot slot) */
.arc-body { display: grid; grid-template-columns: 1fr clamp(240px, 26vw, 300px); gap: clamp(36px, 5vw, 72px); align-items: center; margin-top: 72px; }
.arc-body .arc-track { margin: 0; width: 100%; }
.arc-shot { position: relative; margin: 0; }
.arc-shot .media-slot.phone { margin: 0 auto; max-width: 300px; }
@media (max-width: 900px) {
  .arc-body { grid-template-columns: 1fr; gap: 44px; margin-top: 56px; }
  .arc-shot { order: -1; }
}

/* ============================================================
   THE DEPTH
   ============================================================ */
.depth-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.depth-visual { position: relative; aspect-ratio: 1/1; width: 100%; display: grid; place-items: center; }
#dissolve { width: 100%; height: 100%; }

/* ============================================================
   THE INSTRUMENTS
   ============================================================ */
.instruments-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: center; }
.instr-visual { position: relative; aspect-ratio: 4/5; }
.media-slot { position: relative; width: 100%; height: 100%; border-radius: 20px; background-image: repeating-linear-gradient(135deg, rgba(246,236,216,0.05) 0 10px, rgba(246,236,216,0.1) 10px 20px); border: 1px solid var(--on-whisper); display: grid; place-items: center; overflow: hidden; }
.media-slot .tag { font-family: var(--font-mono); font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--on-faint); padding: 7px 12px; border: 1px dashed var(--on-whisper); border-radius: 999px; background: rgba(0,0,0,0.22); }
.media-slot.phone { aspect-ratio: 9/19; max-width: 280px; border-radius: 34px; margin: 0 auto; }

/* ============================================================
   PRIVACY
   ============================================================ */
.privacy { text-align: center; }
.privacy-line { font-family: var(--font-display); font-size: clamp(24px, 3.6vw, 46px); line-height: 1.25; max-width: 880px; margin: 0 auto; color: var(--on); text-wrap: balance; }
.privacy-line .lock { color: var(--glow1); }
.privacy-mono { margin-top: 26px; font-family: var(--font-mono); font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--on-faint); }

/* ============================================================
   FOUNDER
   ============================================================ */
.founder-card { max-width: 720px; margin: 0 auto; position: relative; background: rgba(255,240,220,0.055); border: 1px solid var(--on-whisper); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); border-radius: 26px; padding: clamp(34px, 5vw, 64px); }
.founder-eyebrow { color: var(--accent); }
.founder-h { font-family: var(--font-display); font-size: clamp(26px, 3.4vw, 40px); color: var(--on); margin-top: 16px; }
.founder-placeholder { margin-top: 28px; border: 1px dashed var(--on-whisper); border-radius: 16px; padding: 30px 28px; background: repeating-linear-gradient(135deg, rgba(246,236,216,0.03) 0 9px, rgba(246,236,216,0.07) 9px 18px); }
.founder-placeholder .tag { font-family: var(--font-mono); font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--on-faint); }
.founder-placeholder p { margin-top: 12px; color: var(--on-faint); font-style: italic; font-size: 15px; line-height: 1.6; }
.founder-sign { margin-top: 22px; font-family: var(--font-display); font-size: 20px; color: var(--on-soft); }

/* ============================================================
   FINAL CTA — a soft gathering of light (no hard band)
   ============================================================ */
.final { text-align: center; position: relative; overflow: hidden; padding-top: clamp(112px, 16vh, 196px); padding-bottom: clamp(112px, 16vh, 196px); }
.final::before { content: ''; position: absolute; inset: 0; z-index: 0; pointer-events: none; background: radial-gradient(62% 46% at 50% 46%, color-mix(in oklab, var(--glow1) 42%, transparent) 0%, transparent 70%); }
.final-h { font-size: clamp(40px, 6.6vw, 96px); line-height: 0.94; position: relative; z-index: 2; }
/* final headline: shine spans vertically across both lines */
.final-h.groove {
  background-image: linear-gradient(158deg, var(--glow1), var(--glow2) 50%, var(--glow3));
  background-size: 150% 260%;
  animation: groove-flow-v 16s ease-in-out infinite;
}
@keyframes groove-flow-v { 0%,100%{background-position:50% 0%} 50%{background-position:50% 100%} }
.final .capture { margin: 42px auto 0; position: relative; z-index: 2; }
.final .capture-field { justify-content: center; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { padding: 96px 24px 64px; position: relative; z-index: 1; }
.footer-grid { max-width: var(--maxw); margin: 0 auto; display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: start; }
.footer-mark { display: flex; align-items: center; gap: 14px; font-family: var(--font-groove); font-size: 30px; color: var(--on); }
.footer-disq { margin-top: 22px; max-width: 460px; font-size: 14.5px; color: var(--on-faint); line-height: 1.6; }
.footer-meta { display: flex; flex-direction: column; gap: 10px; font-size: 14px; color: var(--on-faint); align-items: flex-start; }
.footer-meta a { color: var(--on-soft); text-decoration: none; border-bottom: 1px solid var(--on-whisper); padding-bottom: 1px; }
.footer-meta a:hover { color: var(--glow1); border-color: var(--glow1); }
.footer-copy { margin: 56px auto 0; padding-top: 22px; border-top: 1px solid var(--on-whisper); max-width: var(--maxw); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--on-faint); }

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal { opacity: 1; }
.anim-ready .reveal { opacity: 0; transform: translateY(28px); }
.reveal.in { opacity: 1; transform: none; transition: opacity 1s cubic-bezier(0.16,1,0.3,1), transform 1s cubic-bezier(0.16,1,0.3,1); }
.reveal-d1.in { transition-delay: 0.08s; } .reveal-d2.in { transition-delay: 0.16s; } .reveal-d3.in { transition-delay: 0.24s; }
.frozen-fallback .reveal, .frozen-fallback .arc-stop { opacity: 1 !important; transform: none !important; transition: none !important; }

/* ============================================================
   AMBIENT CONTROLS (Tweaks)
   ============================================================ */
body[data-flow="off"] #flow { display: none; }
body[data-motion="still"] [class^="fl-"], body[data-motion="still"] .arc-pulse,
body[data-motion="still"] .scroll-cue .dot, body[data-motion="still"] .groove,
body[data-motion="still"] .page-grain { animation: none !important; }
body[data-motion="still"] .ripple-field { filter: none; animation: none !important; }
body[data-motion="calm"] [class^="fl-"] { animation-duration: 60s; }
body[data-motion="calm"] .ripple-field { animation-duration: 80s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .depth-grid, .instruments-grid { grid-template-columns: 1fr; gap: 40px; }
  .instr-visual { max-width: 360px; order: -1; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 560px) {
  .section { padding: 92px 20px; }
  .capture-field { flex-direction: column; align-items: stretch; }
  .capture-btn { width: 100%; }
  .arc-track { padding-left: 42px; }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .reveal, .arc-stop { opacity: 1 !important; transform: none !important; transition: none !important; }
  .scroll-cue .dot, .arc-pulse, .groove, .page-grain,
  .ripple-field, [class^="fl-"] { animation: none !important; }
}