/* MadLogic — "Mad vs Logic" lab. Loud paper + ink, with a mode accent that flips. */

:root {
  --paper: #f5efe1;
  --paper-2: #e9e0cc;
  --ink: #0f0e0d;
  --ink-soft: #4d4842;
  --mad: #ff3d00;
  --mad-soft: #ffd2c2;
  --logic: #5b16d0; /* MadLogic brand purple (logo + posts) */
  --logic-2: #7a3cf0;
  --logic-soft: #e4d8ff;
  --pop: #d7ff1f;
  --sticky: #ffe14d;
  --mint: #9ff0c4;
  --accent: var(--mad);
  --accent-soft: var(--mad-soft);
  --on-accent: #fff;
  --radius: 16px;
  --border: 3px solid var(--ink);
  --shadow: 6px 6px 0 var(--ink);
  --shadow-lg: 10px 10px 0 var(--ink);
  --gutter: clamp(16px, 4vw, 48px);
  --font-display: "Archivo", system-ui, sans-serif;
  --font-mono: "Space Mono", ui-monospace, monospace;
  --font-hand: "Caveat", cursive;
  --ease-spring: cubic-bezier(0.5, 1.7, 0.4, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

html[data-mode="logic"] {
  --accent: var(--logic);
  --accent-soft: var(--logic-soft);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.5;
  overflow-x: hidden;
  background-image: radial-gradient(var(--paper-2) 1.6px, transparent 1.6px);
  background-size: 24px 24px;
}

html[data-mode="logic"] body {
  background-image:
    linear-gradient(var(--logic-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--logic-soft) 1px, transparent 1px);
  background-size: 28px 28px;
}

::selection { background: var(--pop); color: var(--ink); }

a { color: inherit; }
h1, h2, h3 { margin: 0; line-height: 0.92; letter-spacing: -0.03em; font-stretch: 118%; }
h2 { font-size: clamp(42px, 7.5vw, 104px); font-weight: 900; text-transform: uppercase; }
em {
  font-style: normal; color: var(--accent);
  transition: color 0.4s;
}
h2 em {
  display: inline-block;
  background: var(--pop); color: var(--ink);
  padding: 0 0.12em; transform: rotate(-1.5deg);
  box-shadow: 4px 4px 0 var(--ink);
}

.mono { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.05em; text-transform: uppercase; }
.hand { font-family: var(--font-hand); font-size: 26px; color: var(--ink-soft); }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 18px; color: var(--ink-soft); }
.lede { max-width: 540px; color: var(--ink-soft); margin: 20px 0 0; font-size: 20px; }

.blink {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent); animation: blink 1.2s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 16px 28px;
  background: var(--accent); color: var(--on-accent);
  border: var(--border); border-radius: 999px;
  box-shadow: var(--shadow);
  font: 800 17px var(--font-display); font-stretch: 112%;
  text-transform: uppercase; letter-spacing: 0.01em;
  text-decoration: none; cursor: pointer;
  transition: transform 0.18s var(--ease-spring), box-shadow 0.18s, background 0.4s;
}
.btn:hover { transform: translate(-3px, -3px) rotate(-1deg); box-shadow: 9px 9px 0 var(--ink); }
.btn:active { transform: translate(4px, 4px); box-shadow: 2px 2px 0 var(--ink); }
.btn:focus-visible, .chip:focus-visible, .element:focus-visible, .switch:focus-visible {
  outline: 3px solid var(--pop); outline-offset: 4px;
}
.btn-ghost { background: var(--paper); color: var(--ink); }
.btn-ghost:hover { background: var(--pop); }
.btn-small { padding: 10px 18px; font-size: 13px; box-shadow: 4px 4px 0 var(--ink); white-space: nowrap; }

/* ---------- Topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px var(--gutter);
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: var(--border);
}
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 900; font-size: 22px; font-stretch: 120%; }
.logo img { display: block; height: 48px; width: auto; transition: transform 0.3s var(--ease-spring); }
.logo:hover img { transform: rotate(-3deg) scale(1.05); }
@media (max-width: 640px) { .logo img { height: 40px; } }
.logo-mark {
  display: flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  background: var(--ink); color: var(--paper);
  border-radius: 12px; font-size: 14px; white-space: nowrap; letter-spacing: -0.04em;
  transition: transform 0.3s var(--ease-spring);
}
.logo:hover .logo-mark { transform: rotate(-12deg) scale(1.08); }
.logo-mark span { color: var(--accent); transition: color 0.4s; }
.nav { display: flex; gap: 6px; }
.nav a {
  padding: 8px 14px; border-radius: 999px; border: 2px solid transparent;
  text-decoration: none; font-weight: 700; text-transform: uppercase; font-size: 14px;
  transition: background 0.2s, border-color 0.2s, transform 0.2s var(--ease-spring);
}
.nav a:hover { background: var(--pop); border-color: var(--ink); transform: rotate(-3deg); }

/* ---------- Hero ---------- */
.hero { position: relative; padding: clamp(40px, 7vw, 96px) var(--gutter) 72px; max-width: 1360px; margin: 0 auto; }
.hero-title {
  font-size: clamp(46px, 9.6vw, 150px); font-weight: 900; font-stretch: 125%;
  text-transform: uppercase; line-height: 0.88; display: grid; gap: 0.04em;
}
.line { transition: opacity 0.4s, color 0.4s, transform 0.5s var(--ease-spring); }
html[data-mode="mad"] .line-logic { opacity: 0.14; }
html[data-mode="mad"] .line-mad { color: var(--mad); transform: rotate(-2deg) translateX(-0.04em); }
html[data-mode="logic"] .line-mad { opacity: 0.14; }
html[data-mode="logic"] .line-logic { color: var(--logic); }

.word { display: inline-block; white-space: nowrap; }
.char { display: inline-block; transition: transform 0.35s var(--ease-spring); }
.char:hover { transform: translateY(-0.12em) rotate(-8deg) scale(1.08); }

.badge {
  position: absolute; right: 0; top: 50%; margin-top: calc(clamp(96px, 13vw, 160px) / -2);
  width: clamp(96px, 13vw, 160px); height: auto;
  animation: spin 14s linear infinite; z-index: 2;
}
.badge circle { fill: var(--pop); stroke: var(--ink); stroke-width: 3; }
.badge text { font: 700 14.5px var(--font-mono); text-transform: uppercase; fill: var(--ink); letter-spacing: 1.5px; }
.badge .badge-core { font: 900 42px var(--font-display); font-stretch: 125%; letter-spacing: -2px; }
@keyframes spin { to { transform: rotate(360deg); } }

.switch-wrap { position: relative; display: flex; align-items: center; flex-wrap: wrap; gap: 16px; margin: 40px 0 32px; padding-right: clamp(110px, 15vw, 180px); }
.switch-label { cursor: pointer; font-weight: 700; font-size: 18px; opacity: 0.35; transition: opacity 0.3s; }
html[data-mode="mad"] .switch-label[data-side="mad"],
html[data-mode="logic"] .switch-label[data-side="logic"] { opacity: 1; }
.switch {
  position: relative; width: 120px; height: 60px;
  border: var(--border); border-radius: 999px;
  background: var(--accent); box-shadow: 4px 4px 0 var(--ink);
  cursor: pointer; transition: background 0.4s;
}
.switch-knob {
  position: absolute; top: 5px; left: 5px;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--pop); border: var(--border);
  transition: transform 0.45s var(--ease-spring);
}
.switch:hover .switch-knob { transform: scale(1.08); }
html[data-mode="logic"] .switch-knob { transform: translateX(60px); }
html[data-mode="logic"] .switch:hover .switch-knob { transform: translateX(60px) scale(1.08); }
.switch-hint { margin-left: 8px; }

.hero-stage {
  position: relative; min-height: 300px;
  border: var(--border); border-radius: var(--radius);
  background: var(--paper); box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.stage-mad, .stage-logic {
  position: absolute; inset: 0; padding: 28px;
  transition: opacity 0.4s, transform 0.5s var(--ease-out);
}
html[data-mode="mad"] .stage-logic,
html[data-mode="logic"] .stage-mad { opacity: 0; transform: translateY(20px) scale(0.98); pointer-events: none; }
.stage-hint { position: absolute; right: 18px; bottom: 14px; color: var(--ink-soft); text-transform: none; }

.note {
  position: absolute; max-width: 230px; padding: 18px 20px;
  background: var(--sticky); border: var(--border);
  font-family: var(--font-hand); font-size: 28px; line-height: 1.02;
  box-shadow: 4px 4px 0 var(--ink);
  cursor: grab; user-select: none; touch-action: none;
  rotate: var(--r, 0deg);
  transition: scale 0.2s var(--ease-spring), box-shadow 0.2s, rotate 0.3s;
}
.note:hover { scale: 1.05; z-index: 3; }
.note.dragging { cursor: grabbing; scale: 1.1; rotate: 0deg; box-shadow: 12px 12px 0 var(--ink); z-index: 4; transition: none; }
.n1 { top: 24px; left: 4%; --r: -5deg; }
.n2 { top: 44px; left: 38%; --r: 4deg; background: var(--mad-soft); }
.n3 { top: 150px; left: 18%; --r: 3deg; background: var(--mint); }
.n4 { top: 120px; right: 5%; --r: -4deg; background: var(--pop); }

.stage-logic { display: grid; gap: 16px; align-content: center; }
.meter { display: grid; grid-template-columns: 70px 1fr 170px; align-items: center; gap: 16px; }
.meter span { font-weight: 700; font-size: 15px; }
.meter small { color: var(--ink-soft); }
.bar { height: 24px; border: var(--border); border-radius: 999px; overflow: hidden; background: var(--paper-2); }
.bar i {
  display: block; height: 100%; width: var(--w);
  background: repeating-linear-gradient(-45deg, var(--logic) 0 10px, var(--logic-2) 10px 20px);
  transform-origin: left; transform: scaleX(0);
  transition: transform 1s var(--ease-out);
}
html[data-mode="logic"] .bar i { transform: scaleX(1); }
.meter:nth-child(2) .bar i { transition-delay: 0.08s; }
.meter:nth-child(3) .bar i { transition-delay: 0.16s; }
.meter:nth-child(4) .bar i { transition-delay: 0.24s; }
.meter-note { margin: 4px 0 0; color: var(--ink-soft); text-transform: none; }

.hero-cta { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 36px; }

/* ---------- Crossed tapes ---------- */
.tapes { position: relative; height: 170px; margin: 20px 0; overflow: hidden; }
.ticker {
  position: absolute; left: -5%; width: 110%;
  border-block: var(--border); overflow: hidden;
}
.ticker-a { top: 40px; background: var(--ink); color: var(--paper); transform: rotate(-3deg); z-index: 1; }
.ticker-b { top: 50px; background: var(--accent); color: var(--on-accent); transform: rotate(2.5deg); transition: background 0.4s; }
.ticker-track {
  display: flex; gap: 30px; width: max-content; padding: 14px 0;
  font-weight: 900; font-stretch: 125%; font-size: 26px; text-transform: uppercase;
  animation: scroll 30s linear infinite;
}
.ticker-b .ticker-track { animation-direction: reverse; animation-duration: 36s; }
.ticker-a .star { color: var(--pop); }
@keyframes scroll { to { transform: translateX(-50%); } }

/* ---------- Sections ---------- */
.section { padding: clamp(64px, 9vw, 128px) var(--gutter); max-width: 1360px; margin: 0 auto; }
.section-head { margin-bottom: 52px; }

/* Scroll reveal — only applied when JS has marked the page */
html.js [data-reveal] { opacity: 0; transform: translateY(40px); transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out); }
html.js [data-reveal].in { opacity: 1; transform: none; }

/* ---------- Formula ---------- */
.formula { display: grid; grid-template-columns: 1fr 1.15fr; gap: 36px; align-items: start; }
fieldset { border: 0; padding: 0; margin: 0 0 30px; }
legend { margin-bottom: 14px; color: var(--ink-soft); }
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  padding: 12px 20px; border: var(--border); border-radius: 999px;
  background: var(--paper); font: 700 16px var(--font-display); cursor: pointer;
  transition: background 0.2s, transform 0.2s var(--ease-spring), box-shadow 0.2s;
}
.chip:hover { transform: translateY(-3px) rotate(-2deg); box-shadow: 3px 3px 0 var(--ink); }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--pop); }
.btn-mix { font-size: 20px; padding: 18px 34px; }

.flask {
  border: var(--border); border-radius: var(--radius); background: #fff;
  box-shadow: var(--shadow-lg); overflow: hidden;
  transform: rotate(1deg);
}
.flask-top { display: flex; justify-content: space-between; padding: 12px 18px; background: var(--ink); color: var(--pop); }
.flask-body { padding: 28px; }
.tag { display: inline-block; margin: 0 0 10px; padding: 4px 12px; border-radius: 6px; color: #fff; font-size: 12px; font-weight: 700; }
.tag-mad { background: var(--mad); }
.tag-logic { background: var(--logic); margin-top: 20px; }
.flask-idea { font-size: clamp(24px, 3vw, 36px); font-weight: 900; font-stretch: 110%; line-height: 1.08; margin: 0; }
.flask-logic { margin: 0; color: var(--ink-soft); font-size: 18px; }
.flask-cta { display: block; padding: 16px 28px; border-top: var(--border); text-decoration: none; font-weight: 700; transition: background 0.2s; }
.flask-cta:hover { background: var(--pop); }
.flask.bubbling { animation: shake 0.45s var(--ease-spring); }
.flask.bubbling .flask-body { animation: bubble 0.5s var(--ease-out); }
@keyframes shake {
  0%, 100% { transform: rotate(1deg); }
  25% { transform: rotate(-2deg) scale(1.02); }
  60% { transform: rotate(3deg); }
}
@keyframes bubble {
  0% { opacity: 0; transform: translateY(14px); }
  100% { opacity: 1; transform: none; }
}

/* ---------- Services (periodic table) ---------- */
.table-wrap { display: grid; grid-template-columns: 1.3fr 1fr; gap: 32px; }
.elements { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.element {
  aspect-ratio: 1; display: flex; flex-direction: column; justify-content: space-between;
  padding: 16px; text-align: left;
  border: var(--border); border-radius: 12px; background: var(--paper);
  font-family: var(--font-display); cursor: pointer;
  transition: transform 0.2s var(--ease-spring), box-shadow 0.2s, background 0.2s;
}
.element:nth-child(odd):hover { transform: translate(-3px, -3px) rotate(-3deg); }
.element:nth-child(even):hover { transform: translate(-3px, -3px) rotate(3deg); }
.element:hover { box-shadow: var(--shadow); background: var(--pop); }
.element[aria-selected="true"] { background: var(--accent); color: var(--on-accent); box-shadow: var(--shadow); }
.el-num { font-size: 12px; }
.el-symbol { font-size: clamp(44px, 6vw, 76px); font-weight: 900; font-stretch: 125%; line-height: 1; }
.el-name { font-size: 14px; font-weight: 700; line-height: 1.15; overflow-wrap: anywhere; }
.element-detail {
  border: var(--border); border-radius: var(--radius); background: #fff;
  padding: 32px; box-shadow: var(--shadow-lg); align-self: start;
}
.element-detail > * { animation: bubble 0.4s var(--ease-out) both; }
.element-detail h3 { font-size: clamp(32px, 3.4vw, 44px); font-weight: 900; text-transform: uppercase; margin: 8px 0 12px; }
.detail-num { margin: 0; color: var(--ink-soft); }
.detail-summary { color: var(--ink-soft); margin: 0 0 20px; }
.element-detail ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.element-detail li { padding-left: 30px; position: relative; font-weight: 600; }
.element-detail li::before { content: "→"; position: absolute; left: 0; color: var(--accent); font-weight: 900; }

/* ---------- What MAD means (acrostic rows) ---------- */
.mad-means { padding-top: clamp(40px, 6vw, 80px); }
.mad-means h2 em { font-size: 1.15em; }
.letters { list-style: none; margin: 0; padding: 0; border-top: var(--border); }
.letter {
  position: relative; display: grid; grid-template-columns: 56px minmax(0, 1fr) minmax(180px, 280px);
  align-items: center; gap: clamp(12px, 3vw, 36px);
  padding: clamp(14px, 2vw, 24px) clamp(8px, 2vw, 24px); border-bottom: var(--border);
  overflow: hidden; cursor: default; isolation: isolate;
  transition: color 0.3s;
}
/* Ink panel that wipes in from the left on hover */
.letter::before {
  content: ""; position: absolute; inset: 0; z-index: -1; background: var(--ink);
  transform: scaleX(0); transform-origin: left; transition: transform 0.5s var(--ease-out);
}
.letter:hover::before, .letter:focus-visible::before { transform: scaleX(1); }
.letter:hover, .letter:focus-visible { color: var(--paper); outline: none; }
.letter-num { align-self: start; padding-top: 10px; color: var(--ink-soft); transition: color 0.3s; }
.letter:hover .letter-num, .letter:focus-visible .letter-num { color: var(--pop); }
/* Sized against the row's own width (container units) so the longest word, ADVERTISING, always fits. */
.letter-word {
  container-type: inline-size;
  display: flex; align-items: baseline; min-width: 0;
  font-weight: 900; font-stretch: 125%; text-transform: uppercase; line-height: 0.85; letter-spacing: -0.03em;
}
.letter-big {
  display: inline-grid; place-items: center; flex: none;
  font-size: min(200px, 18cqi); color: var(--accent);
  transition: color 0.4s, transform 0.45s var(--ease-spring);
}
.letter-rest {
  font-size: min(92px, 8.2cqi); color: transparent; -webkit-text-stroke: 2px var(--ink);
  white-space: nowrap;
  transition: color 0.35s, -webkit-text-stroke-color 0.35s, transform 0.45s var(--ease-out);
}
.letter:hover .letter-big, .letter:focus-visible .letter-big { color: var(--pop); transform: rotate(-6deg) scale(1.05); }
.letter:hover .letter-rest, .letter:focus-visible .letter-rest { color: var(--paper); -webkit-text-stroke-color: var(--paper); transform: translateX(10px); }
.letter-line { font-size: 14px; text-transform: none; line-height: 1.4; color: var(--ink-soft); transition: color 0.3s; }
.letter:hover .letter-line, .letter:focus-visible .letter-line { color: var(--paper); }

/* ---------- Process ---------- */
.process { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); }
.step {
  position: relative; padding: 32px 22px 0;
  border-top: 6px solid var(--paper-2);
  transition: border-color 0.6s;
}
.step::before {
  content: ""; position: absolute; top: -16px; left: 22px;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--paper); border: var(--border);
  transition: background 0.6s, transform 0.6s var(--ease-spring);
}
.step.lit { border-color: var(--accent); }
.step.lit::before { background: var(--pop); transform: scale(1.2); }
.step-num { color: var(--ink-soft); }
.step h3 { font-size: 30px; font-weight: 900; text-transform: uppercase; margin: 12px 0; }
.step p { color: var(--ink-soft); margin: 0; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 14px; max-width: 900px; }
details { border: var(--border); border-radius: 14px; background: #fff; transition: box-shadow 0.2s, transform 0.2s; }
details:hover { box-shadow: var(--shadow); transform: translate(-2px, -2px); }
details[open] { background: var(--pop); }
summary {
  display: flex; align-items: center; gap: 16px;
  padding: 20px 24px; font-weight: 800; font-size: 20px; cursor: pointer; list-style: none;
}
summary::-webkit-details-marker { display: none; }
.q {
  flex: none; display: grid; place-items: center; width: 34px; height: 34px;
  border-radius: 10px; background: var(--accent); color: #fff; font-size: 16px;
  transition: transform 0.35s var(--ease-spring), background 0.4s;
}
details[open] .q { transform: rotate(180deg); background: var(--ink); }
details p { margin: 0; padding: 0 24px 22px 74px; color: var(--ink); }

/* ---------- Contact ---------- */
.contact {
  position: relative; overflow: hidden;
  margin: 0 var(--gutter) 40px; padding: clamp(36px, 7vw, 96px);
  background: var(--ink); color: var(--paper);
  border-radius: 28px;
}
.contact::after {
  content: "M/L"; position: absolute; right: -0.05em; bottom: -0.2em;
  font: 900 clamp(160px, 26vw, 380px) var(--font-display); font-stretch: 125%;
  color: var(--accent); opacity: 0.18; pointer-events: none; transition: color 0.4s;
}
.contact > * { position: relative; z-index: 1; }
.contact .eyebrow { color: #a8a39a; }
.contact h2 { font-size: clamp(42px, 8vw, 116px); margin-bottom: 44px; }
.contact h2 em { background: var(--pop); color: var(--ink); box-shadow: 5px 5px 0 var(--accent); }
.brief { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; max-width: 900px; }
.brief label { display: grid; gap: 8px; }
.brief .full { grid-column: 1 / -1; }
.brief span { color: #a8a39a; }
.brief input, .brief select, .brief textarea {
  width: 100%; padding: 16px 18px;
  background: #1f1d1b; color: var(--paper);
  border: 2px solid #3a3733; border-radius: 12px;
  font: 17px var(--font-display);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.brief input:focus, .brief select:focus, .brief textarea:focus { outline: none; border-color: var(--pop); box-shadow: 4px 4px 0 var(--pop); }
.brief .btn { justify-self: start; background: var(--pop); color: var(--ink); border-color: var(--pop); box-shadow: 6px 6px 0 var(--accent); }
.form-error { grid-column: 1 / -1; margin: 0; min-height: 1em; color: #ff9a7d; }
.contact-links { display: flex; flex-wrap: wrap; gap: 26px; margin-top: 36px; }
.contact-links a { color: var(--paper); text-underline-offset: 6px; }
.contact-links a:hover { color: var(--pop); }

/* ---------- Footer ---------- */
.footer {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px;
  padding: 24px var(--gutter) 40px;
}

/* ---------- Custom cursor (fine pointers only, added by JS) ---------- */
.cursor {
  position: fixed; left: 0; top: 0; z-index: 100;
  width: 22px; height: 22px; margin: -11px 0 0 -11px; border-radius: 50%;
  background: var(--pop); border: 2px solid var(--ink);
  pointer-events: none; mix-blend-mode: multiply;
  transition: width 0.25s var(--ease-spring), height 0.25s var(--ease-spring), margin 0.25s var(--ease-spring), opacity 0.2s;
}
.cursor.big { width: 64px; height: 64px; margin: -32px 0 0 -32px; }
.cursor.hidden { opacity: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .formula, .table-wrap { grid-template-columns: minmax(0, 1fr); }
  .process { grid-template-columns: 1fr 1fr; row-gap: 40px; }
  .letter { grid-template-columns: 34px minmax(0, 1fr); }
  .letter-line { grid-column: 2; margin-top: -4px; }
}

@media (max-width: 640px) {
  .letter-rest { -webkit-text-stroke-width: 1.5px; }
  body { font-size: 17px; }
  .nav { display: none; }
  .badge { width: 84px; top: 0; margin-top: -6px; }
  .switch-wrap { padding-right: 92px; gap: 12px; }
  .switch { width: 92px; height: 48px; }
  .switch-knob { width: 34px; height: 34px; }
  html[data-mode="logic"] .switch-knob,
  html[data-mode="logic"] .switch:hover .switch-knob { transform: translateX(44px); }
  .elements { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .el-symbol { font-size: 48px; }
  .logo-word { font-size: 19px; }
  .hero-stage { min-height: 380px; }
  .note { font-size: 22px; max-width: 160px; padding: 12px 14px; }
  .n1 { top: 18px; left: 4%; }
  .n2 { top: 44px; left: auto; right: 4%; }
  .n3 { top: 180px; left: 6%; }
  .n4 { top: 240px; right: 6%; }
  .meter { grid-template-columns: 56px 1fr; }
  .meter small { display: none; }
  .process { grid-template-columns: 1fr; }
  .brief { grid-template-columns: 1fr; }
  .switch-hint { margin-left: 0; width: 100%; }
  .tapes { height: 140px; }
  .ticker-track { font-size: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  html.js [data-reveal] { opacity: 1; transform: none; }
}