:root {
  --ink: #e9f2ff;
  --muted: #8296b0;
  --panel: #081726;
  --panel-2: #0b1c2d;
  --line: #284565;
  --cyan: #3cdef8;
  --amber: #ffad1f;
  --green: #43f0a7;
  --red: #ff5b75;
  --navy: #03111d;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { color-scheme: dark; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(circle at 50% -10%, rgba(26, 159, 200, .17), transparent 35rem),
    linear-gradient(rgba(11, 43, 62, .18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 43, 62, .18) 1px, transparent 1px),
    var(--navy);
  background-size: auto, 88px 88px, 88px 88px, auto;
  font-family: "Rajdhani", sans-serif;
}

button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }

.arcade-nav {
  min-height: 112px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px clamp(24px, 5vw, 86px);
  border-bottom: 1px solid #18364c;
  background: rgba(2, 17, 28, .94);
}
.arcade-brand { display: flex; align-items: center; gap: 15px; color: var(--ink); text-decoration: none; font: 700 18px/1 "JetBrains Mono", monospace; letter-spacing: .17em; }
.arcade-brand img { width: 56px; height: 56px; object-fit: contain; }
.arcade-brand strong { color: var(--amber); }
.all-missions { padding: 18px 23px; border: 1px solid #94661c; color: var(--amber); text-decoration: none; font: 700 13px/1 "JetBrains Mono", monospace; letter-spacing: .11em; transition: .2s ease; }
.all-missions:hover { background: rgba(255,173,31,.1); box-shadow: 0 0 22px rgba(255,173,31,.12); }

.app-stage { padding: clamp(28px, 5vw, 70px) clamp(14px, 3vw, 46px) 70px; }
.app { width: min(1640px, 100%); margin: 0 auto; }
.app-header { text-align: center; margin-bottom: 28px; }
.mission-id, .panel-kicker { color: var(--amber); font: 700 12px/1.2 "JetBrains Mono", monospace; letter-spacing: .17em; }
.app-header h1 { display: flex; align-items: center; justify-content: center; gap: 18px; margin: 12px 0 8px; color: var(--cyan); font-size: clamp(29px, 4.3vw, 55px); line-height: 1; text-transform: uppercase; letter-spacing: .035em; }
.brand-hair { width: clamp(24px, 5vw, 80px); height: 1px; background: linear-gradient(90deg, transparent, var(--cyan)); opacity: .45; }
.brand-hair:last-child { transform: scaleX(-1); }
.subtitle { margin: 0; color: var(--muted); font: 700 13px/1.4 "JetBrains Mono", monospace; letter-spacing: .16em; text-transform: uppercase; }

.trainer-modes { width: min(720px, 100%); margin: 0 auto 30px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; padding: 7px; border: 1px solid var(--line); background: #061522; border-radius: 8px; }
.mode-btn { min-height: 60px; border: 1px solid transparent; background: transparent; color: var(--muted); font: 700 14px/1 "JetBrains Mono", monospace; letter-spacing: .12em; text-transform: uppercase; cursor: pointer; }
.mode-btn.active { color: #07131d; border-color: #ffca59; background: linear-gradient(180deg, #ffc34d, #f5a116); box-shadow: 0 0 18px rgba(255,173,31,.25), inset 0 1px rgba(255,255,255,.5); }

.workspace { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(340px, .75fr); gap: 22px; align-items: stretch; }
.app[data-mode="calculate"] .workspace {
  grid-template-columns: minmax(0, 920px);
  justify-content: center;
}
.app[data-mode="calculate"] .visual-panel { display: none; }
.app[data-mode="calculate"] .control-panel { width: 100%; }
.card { border: 1px solid var(--line); background: rgba(6, 20, 33, .96); box-shadow: inset 0 0 45px rgba(18, 81, 111, .05), 0 20px 60px rgba(0,0,0,.24); }
.visual-panel, .control-panel, .concepts { padding: clamp(18px, 2.4vw, 34px); }
.panel-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.panel-heading h2 { margin: 8px 0 0; font-size: clamp(24px, 2.3vw, 34px); line-height: 1; }
.panel-kicker { margin: 0; }
.status-badge { flex: none; padding: 12px 15px; border: 1px solid #267b91; color: var(--cyan); background: rgba(60,222,248,.06); font: 700 11px/1 "JetBrains Mono", monospace; letter-spacing: .09em; }
.status-badge.lower { border-color: #a36c12; color: var(--amber); background: rgba(255,173,31,.08); }
.status-badge.higher { border-color: #259d73; color: var(--green); background: rgba(67,240,167,.07); }

.visual-grid { display: grid; grid-template-columns: minmax(0, 1.42fr) minmax(250px, .72fr); gap: 18px; padding: 22px 0; }
.profile-wrap, .altimeter-card { min-width: 0; border: 1px solid var(--line); background: linear-gradient(180deg, #071827, #06131f); }
.profile-wrap { position: relative; min-height: 510px; overflow: hidden; }
#profile-canvas { display: block; width: 100%; height: 100%; min-height: 510px; }
.profile-legend { position: absolute; left: 18px; bottom: 16px; display: flex; flex-wrap: wrap; gap: 15px; padding: 9px 12px; background: rgba(3, 15, 25, .88); border: 1px solid #1e3e58; color: #a1b1c6; font: 700 9px/1 "JetBrains Mono", monospace; letter-spacing: .07em; }
.profile-legend span { display: flex; align-items: center; gap: 7px; }
.profile-legend i { width: 18px; height: 3px; background: var(--cyan); }
.profile-legend i.amber { background: var(--amber); }
.profile-legend i.ghost { height: 2px; border: 1px dashed #8192a7; background: transparent; }
.profile-readouts { position: absolute; z-index: 2; top: 16px; left: 16px; right: 16px; display: grid; grid-template-columns: minmax(0, 1.55fr) repeat(2, minmax(0, 1fr)) minmax(112px, 1fr); border: 1px solid #294a66; background: rgba(3, 15, 25, .93); box-shadow: 0 10px 28px rgba(0,0,0,.2); }
.profile-readouts article { box-sizing: border-box; min-width: 0; padding: 11px; border-right: 1px solid #294a66; overflow: hidden; }
.profile-readouts article:last-child { border-right: 0; }
.profile-readouts span { display: block; margin-bottom: 5px; color: var(--muted); font: 700 7px/1 "JetBrains Mono", monospace; letter-spacing: .1em; }
.profile-readouts strong { display: block; color: var(--cyan); font: 700 11px/1 "JetBrains Mono", monospace; white-space: nowrap; }
.profile-readouts .relation { min-width: 112px; }
.profile-readouts .pressure strong { color: var(--amber); }
.profile-readouts .pressure strong.expanded { color: var(--green); }
.profile-readouts .pressure strong.aligned { color: var(--cyan); }
.profile-readouts.lower .relation strong { color: var(--amber); }
.profile-readouts.higher .relation strong { color: var(--green); }
.profile-readouts.same .relation strong { color: var(--cyan); }

.altimeter-card { display: flex; flex-direction: column; justify-content: space-between; padding: 18px; }
.instrument-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; font: 700 10px/1 "JetBrains Mono", monospace; color: var(--muted); letter-spacing: .1em; }
.instrument-heading strong { color: var(--cyan); font-size: 15px; }
#altimeter-canvas { width: 100%; aspect-ratio: 1; display: block; }
.kollsman-readout { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; padding: 13px; border: 1px solid #8d621c; background: rgba(255,173,31,.06); }
.kollsman-readout span { grid-column: 1 / -1; color: var(--muted); font: 700 9px/1 "JetBrains Mono", monospace; letter-spacing: .12em; }
.kollsman-readout strong { color: var(--amber); font: 700 22px/1 "JetBrains Mono", monospace; }
.kollsman-readout small { align-self: end; color: var(--muted); font: 700 9px/1 "JetBrains Mono", monospace; }

.safety-callout { display: flex; gap: 14px; align-items: flex-start; margin-top: 16px; padding: 15px 17px; border-left: 3px solid var(--cyan); background: rgba(60,222,248,.05); }
.safety-callout > span { width: 25px; height: 25px; display: grid; place-items: center; flex: none; border: 1px solid var(--cyan); color: var(--cyan); border-radius: 50%; font: 700 13px/1 "JetBrains Mono", monospace; }
.safety-callout p { margin: 0; color: var(--ink); font-size: 16px; line-height: 1.25; }
.safety-callout small { color: var(--muted); font-size: 14px; }
.safety-callout.warning { border-color: var(--amber); background: rgba(255,173,31,.07); }
.safety-callout.warning > span { border-color: var(--amber); color: var(--amber); }
.safety-callout.positive { border-color: var(--green); background: rgba(67,240,167,.05); }
.safety-callout.positive > span { border-color: var(--green); color: var(--green); }

.control-panel { min-width: 0; }
.control-heading { align-items: center; }
.reset-btn, .new-btn { padding: 12px 15px; font: 700 10px/1 "JetBrains Mono", monospace; letter-spacing: .1em; cursor: pointer; }
.reset-btn { border: 1px solid #345472; background: linear-gradient(180deg, #102338, #091827); color: var(--muted); }
.reset-btn:hover { color: var(--cyan); border-color: var(--cyan); }
.new-btn { min-height: 40px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--amber); border-radius: 4px; background: linear-gradient(180deg, #ffd06b, var(--amber)); color: #171000; box-shadow: 0 0 15px rgba(255,173,31,.3); }
.new-btn::after { content: "\2192"; margin-left: 8px; font-size: .8rem; }
.new-btn:hover { filter: brightness(1.08); box-shadow: 0 0 21px rgba(255,173,31,.4); }
.new-btn:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
.new-btn:active { transform: translateY(1px); }
.control-stack { display: grid; gap: 16px; margin-top: 18px; }
.control-block { display: block; margin: 0; padding: 16px; border: 1px solid var(--line); background: #061522; }
.control-label { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 13px; color: var(--muted); font: 700 10px/1 "JetBrains Mono", monospace; letter-spacing: .11em; text-transform: uppercase; }
.control-label output { color: var(--cyan); text-align: right; }
.control-help { display: block; margin-top: 12px; color: var(--muted); font-size: 13px; line-height: 1.25; }
.choice-stack { display: grid; gap: 8px; }
.choice-stack button { min-height: 58px; display: grid; grid-template-columns: 105px 1fr; align-items: center; gap: 10px; text-align: left; padding: 10px 13px; border: 1px solid #294866; background: linear-gradient(180deg, #0b1c2c, #071522); cursor: pointer; }
.choice-stack b { color: var(--ink); font: 700 11px/1 "JetBrains Mono", monospace; letter-spacing: .08em; }
.choice-stack small { color: var(--muted); font-size: 13px; }
.choice-stack button.active { border-color: var(--amber); background: linear-gradient(180deg, rgba(255,173,31,.12), rgba(255,173,31,.04)); box-shadow: inset 3px 0 var(--amber); }
.choice-stack button.active b { color: var(--amber); }
.segmented { display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; }
.segmented button { min-height: 48px; padding: 8px; border: 1px solid #294866; background: #081827; color: var(--muted); font: 700 9px/1.25 "JetBrains Mono", monospace; text-transform: uppercase; cursor: pointer; }
.segmented button.active { color: #08131c; border-color: #ffcc64; background: var(--amber); box-shadow: 0 0 14px rgba(255,173,31,.18); }
input[type="range"] { width: 100%; accent-color: var(--cyan); cursor: pointer; }
.range-endpoints { display: flex; justify-content: space-between; margin-top: 7px; color: #61758e; font: 700 8px/1 "JetBrains Mono", monospace; }
.setting-card { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 10px; padding: 15px; border: 1px solid #74551f; background: rgba(255,173,31,.045); }
.setting-card article { min-width: 0; }
.setting-card span { display: block; margin-bottom: 7px; color: var(--muted); font: 700 8px/1 "JetBrains Mono", monospace; letter-spacing: .08em; }
.setting-card strong { color: var(--amber); font: 700 19px/1 "JetBrains Mono", monospace; }
.setting-card i { color: var(--muted); font: normal 18px/1 "JetBrains Mono", monospace; }
.pressure-journey { padding: 20px; border: 1px solid #8d621c; background: linear-gradient(145deg, rgba(255,173,31,.08), rgba(6,21,34,.75)); }
.journey-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.journey-heading div > span { display: block; color: var(--amber); font: 700 8px/1.2 "JetBrains Mono", monospace; letter-spacing: .08em; }
.journey-heading div > strong { display: block; margin-top: 7px; font-size: 22px; }
.journey-heading > b { flex: none; padding: 8px 9px; border: 1px solid #46617d; color: var(--muted); font: 700 8px/1 "JetBrains Mono", monospace; letter-spacing: .08em; }
.journey-steps { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: 6px; margin-top: 16px; }
.journey-steps > i { color: #526b83; font: normal 12px/1 "JetBrains Mono", monospace; }
.journey-steps article { min-width: 0; min-height: 76px; display: flex; align-items: center; gap: 10px; padding: 11px; border: 1px solid #284561; background: #071522; opacity: .48; transition: opacity .2s, border-color .2s, background .2s; }
.journey-steps article > span { width: 23px; height: 23px; display: grid; place-items: center; flex: none; border: 1px solid #46617d; color: var(--muted); font: 700 8px/1 "JetBrains Mono", monospace; }
.journey-steps small, .journey-steps strong { display: block; }
.journey-steps small { color: var(--muted); font: 700 7px/1.2 "JetBrains Mono", monospace; }
.journey-steps strong { margin-top: 5px; color: #a7b7ca; font: 700 9px/1.25 "JetBrains Mono", monospace; }
.journey-steps article.active { opacity: 1; border-color: var(--cyan); background: rgba(60,222,248,.07); }
.journey-steps article.active > span { border-color: var(--cyan); color: var(--cyan); }
.journey-steps article.done { opacity: .82; border-color: #2d8a6d; }
.journey-steps article.done > span { border-color: var(--green); color: var(--green); }
.pressure-journey > p { min-height: 40px; margin: 14px 0; color: #a6b6c9; line-height: 1.35; }
.journey-run { width: 100%; min-height: 54px; padding: 10px; border: 1px solid var(--amber); background: linear-gradient(180deg, #ffbd3d, #e9940d); color: #07131d; font: 700 10px/1.25 "JetBrains Mono", monospace; letter-spacing: .08em; cursor: pointer; }
.journey-run:disabled { border-color: #304760; background: #101d2a; color: #53667d; cursor: not-allowed; }
.rule-card { margin-top: 17px; padding: 17px; border: 1px solid #25728a; background: rgba(60,222,248,.05); }
.rule-card > span { display: inline-block; margin-bottom: 9px; color: var(--cyan); font: 700 9px/1 "JetBrains Mono", monospace; letter-spacing: .1em; }
.rule-card strong { display: block; font-size: 19px; }
.rule-card p { margin: 8px 0 0; color: var(--muted); line-height: 1.4; }

.scenario-card { margin: 18px 0; padding: 20px; border: 1px solid #9b681b; background: linear-gradient(135deg, rgba(255,173,31,.11), rgba(255,173,31,.025)); }
.scenario-card > span { color: var(--amber); font: 700 9px/1 "JetBrains Mono", monospace; letter-spacing: .13em; }
.scenario-card > strong { display: block; margin-top: 9px; font-size: 25px; line-height: 1; }
.scenario-card p { min-height: 46px; margin: 10px 0 15px; color: #b3c0d1; line-height: 1.4; }
.scenario-card div { display: flex; justify-content: space-between; gap: 12px; padding-top: 13px; border-top: 1px solid #60481f; color: var(--muted); font: 700 9px/1 "JetBrains Mono", monospace; letter-spacing: .08em; }
.scenario-card div b { color: var(--cyan); font-size: 13px; }
.question-block { min-width: 0; margin: 0 0 16px; padding: 0; border: 0; }
.question-block legend { width: 100%; margin-bottom: 10px; color: #b6c4d5; font-weight: 700; }
.question-block legend span { display: inline-grid; place-items: center; width: 24px; height: 24px; margin-right: 7px; border: 1px solid var(--cyan); color: var(--cyan); font: 700 10px/1 "JetBrains Mono", monospace; }
.answer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; }
.answer-grid button { min-height: 52px; padding: 8px; border: 1px solid #345472; background: #081827; color: var(--muted); font: 700 10px/1 "JetBrains Mono", monospace; text-transform: uppercase; cursor: pointer; }
.answer-grid button.selected { color: var(--amber); border-color: var(--amber); background: rgba(255,173,31,.08); }
.answer-grid button.correct { color: #052117; border-color: var(--green); background: var(--green); }
.answer-grid button.incorrect { color: #fff; border-color: var(--red); background: rgba(255,91,117,.24); }
.submit-btn { width: 100%; min-height: 60px; border: 1px solid var(--amber); background: linear-gradient(180deg, #ffbd3d, #e9940d); color: #07131d; font: 700 12px/1 "JetBrains Mono", monospace; letter-spacing: .11em; cursor: pointer; }
.submit-btn:disabled { border-color: #2b4057; background: #101c29; color: #53667d; cursor: not-allowed; }
.result-banner { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 13px; margin-top: 16px; padding: 16px; border: 1px solid var(--green); background: rgba(67,240,167,.11); }
.result-banner.wrong { border-color: var(--red); background: rgba(255,91,117,.1); }
.result-banner > span { font: 700 25px/1 "JetBrains Mono", monospace; color: var(--green); }
.result-banner.wrong > span { color: var(--red); }
.result-banner strong { font: 700 13px/1 "JetBrains Mono", monospace; letter-spacing: .1em; }
.result-banner p { margin: 6px 0 0; color: #b7c6d6; font-size: 14px; line-height: 1.3; }
.result-banner button { align-self: stretch; border: 1px solid #398568; background: #0c2a25; color: var(--green); font: 700 10px/1 "JetBrains Mono", monospace; cursor: pointer; }
.stats-row { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 16px; border: 1px solid var(--line); }
.stats-row article { padding: 14px 10px; border-right: 1px solid var(--line); text-align: center; }
.stats-row article:last-child { border: 0; }
.stats-row span { display: block; margin-bottom: 7px; color: var(--muted); font: 700 8px/1 "JetBrains Mono", monospace; letter-spacing: .1em; }
.stats-row strong { color: var(--cyan); font: 700 20px/1 "JetBrains Mono", monospace; }

.calculation-rule {
  margin-top: 18px;
  padding: 17px;
  border: 1px solid #27788e;
  background: linear-gradient(135deg, rgba(60,222,248,.09), rgba(60,222,248,.025));
}
.calculation-rule span,
.calculation-rule strong { display: block; font-family: "JetBrains Mono", monospace; }
.calculation-rule span { color: var(--cyan); font-size: 11px; font-weight: 700; letter-spacing: .1em; }
.calculation-rule strong { margin-top: 9px; color: var(--ink); font-size: 21px; }
.calculation-rule p { margin: 8px 0 0; color: var(--muted); font-size: 14px; line-height: 1.35; }

.calculation-scenario { margin-bottom: 14px; }
.calculation-scenario > div + div { margin-top: 10px; }

.calculation-steps { display: grid; gap: 10px; margin-bottom: 16px; }
.calculation-question {
  min-width: 0;
  margin: 0;
  padding: 14px;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) minmax(112px, .62fr);
  align-items: center;
  gap: 11px;
  border: 1px solid var(--line);
  background: #061522;
}
.calculation-question > span:first-child,
.calculation-direction legend > span:first-child {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid var(--cyan);
  color: var(--cyan);
  font: 700 11px/1 "JetBrains Mono", monospace;
}
.calculation-question > div strong,
.calculation-direction legend strong { display: block; color: #c1cedd; font-size: 16px; line-height: 1.2; }
.calculation-question > div small,
.calculation-direction legend small { display: block; margin-top: 4px; color: var(--muted); font-size: 13px; line-height: 1.25; }
.calculation-entry {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  border: 1px solid #345472;
  background: #081827;
}
.calculation-entry:focus-within { border-color: var(--cyan); box-shadow: 0 0 0 2px rgba(60,222,248,.11); }
.calculation-entry input {
  width: 100%;
  min-width: 0;
  min-height: 48px;
  padding: 10px;
  border: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
  font: 700 17px/1 "JetBrains Mono", monospace;
}
.calculation-entry b { padding-right: 10px; color: var(--cyan); font: 700 11px/1 "JetBrains Mono", monospace; }
.calculation-question.correct .calculation-entry { border-color: var(--green); background: rgba(67,240,167,.08); }
.calculation-question.incorrect .calculation-entry { border-color: var(--red); background: rgba(255,91,117,.09); }

.calculation-direction { display: block; }
.calculation-direction legend { width: 100%; padding: 0; display: grid; grid-template-columns: 28px minmax(0, 1fr); align-items: center; gap: 11px; }
.calculation-direction .answer-grid { margin-top: 12px; }

@media (max-width: 520px) {
  .trainer-modes { gap: 4px; padding: 4px; }
  .mode-btn { min-height: 52px; padding: 6px 3px; font-size: 11px; letter-spacing: .06em; }
  .calculation-question { grid-template-columns: 28px minmax(0, 1fr); }
  .calculation-entry { grid-column: 1 / -1; }
}

.concepts { margin-top: 22px; }
.concept-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 20px; }
.concept-grid article { min-height: 180px; padding: 20px; border: 1px solid var(--line); background: #071522; }
.concept-grid span { color: var(--amber); font: 700 9px/1 "JetBrains Mono", monospace; letter-spacing: .12em; }
.concept-grid strong { display: block; margin: 12px 0 9px; font-size: 25px; }
.concept-grid p { margin: 0 0 15px; color: var(--muted); line-height: 1.45; }
.concept-grid b { color: var(--cyan); font: 700 10px/1 "JetBrains Mono", monospace; letter-spacing: .1em; }
.disclaimer { margin: 17px 0 0; color: #6f829a; font-size: 13px; line-height: 1.45; }
.disclaimer strong { color: #95a8bf; font-family: "JetBrains Mono", monospace; font-size: 10px; letter-spacing: .07em; }

@media (max-width: 1120px) {
  .workspace { grid-template-columns: 1fr; }
  .control-panel { order: -1; }
  .control-stack { grid-template-columns: 1.2fr 1fr 1fr; align-items: start; }
  .setting-card, .rule-card { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .arcade-nav { min-height: 86px; padding: 14px 16px; }
  .arcade-brand { font-size: 13px; gap: 9px; }
  .arcade-brand img { width: 42px; height: 42px; }
  .all-missions { padding: 14px 12px; font-size: 9px; }
  .app-stage { padding: 25px 8px 45px; }
  .app-header h1 { gap: 8px; font-size: 29px; }
  .subtitle { font-size: 10px; }
  .visual-panel, .control-panel, .concepts { padding: 14px; }
  .panel-heading { padding-bottom: 15px; }
  .status-badge { padding: 9px; font-size: 8px; }
  .control-panel { order: 0; }
  .visual-grid { grid-template-columns: 1fr; }
  .profile-wrap, #profile-canvas { min-height: 390px; }
  .altimeter-card { display: grid; grid-template-columns: 1fr minmax(180px, 54vw); grid-template-rows: auto auto; align-items: center; gap: 10px; }
  .instrument-heading { grid-column: 1 / -1; }
  #altimeter-canvas { grid-column: 2; grid-row: 2; }
  .kollsman-readout { grid-column: 1; grid-row: 2; }
  .control-stack { grid-template-columns: 1fr; }
  .concept-grid { grid-template-columns: 1fr; }
  .concept-grid article { min-height: 0; }
}

@media (max-width: 600px) {
  .profile-readouts { top: 8px; left: 8px; right: 8px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .profile-readouts .pressure { grid-column: 1 / -1; border-right: 0; border-bottom: 1px solid #294a66; }
  .profile-readouts .relation { min-width: 0; }
}

@media (max-width: 450px) {
  .app-header h1 { font-size: 25px; }
  .brand-hair { width: 16px; }
  .visual-grid { padding-top: 14px; }
  .profile-wrap, #profile-canvas { min-height: 340px; }
  .altimeter-card { grid-template-columns: 1fr 1.7fr; padding: 12px; }
  .profile-readouts article { padding: 7px 8px; }
  .profile-readouts span { font-size: 6px; }
  .profile-readouts strong { font-size: 9px; }
  .profile-readouts .pressure strong { font-size: 10px; }
  .profile-legend { left: 8px; right: 8px; bottom: 8px; gap: 8px; font-size: 7px; }
  .choice-stack button { grid-template-columns: 90px 1fr; }
  .journey-steps { grid-template-columns: 1fr; }
  .journey-steps > i { display: none; }
  .journey-steps article { min-height: 52px; }
  .answer-grid { gap: 5px; }
  .answer-grid button { font-size: 8px; }
  .result-banner { grid-template-columns: auto 1fr; }
  .result-banner button { grid-column: 1 / -1; min-height: 43px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}