:root {
  color-scheme: light;
  --ink: #24223a;
  --muted: #77748b;
  --line: #e4e1ed;
  --paper: #fff;
  --surface: #f5f3f9;
  --primary: #6558d3;
  --primary-soft: #eeebff;
  --green: #16845b;
  --green-soft: #e2f6ed;
  --amber: #95600e;
  --amber-soft: #fff0d6;
  --red: #a43b50;
  --red-soft: #ffe9ed;
}

* { box-sizing: border-box; }

body.table-page-body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", sans-serif;
}

body.matrix-modal-open { overflow: hidden; }

button, select, textarea { font: inherit; }

.matrix-page {
  width: min(1640px, calc(100% - 36px));
  min-width: 0;
  margin: 0 auto;
  padding: 28px 0 52px;
}

.matrix-header nav { display: flex; justify-content: space-between; margin-bottom: 38px; }
.matrix-header nav a { color: var(--muted); font-size: 14px; text-decoration: none; }
.page-kicker { color: var(--primary); font-size: 12px; font-weight: 800; letter-spacing: .09em; }
.matrix-header h1 { margin: 7px 0 9px; font-size: clamp(34px, 5vw, 52px); letter-spacing: -.045em; }
.matrix-header > p { max-width: 850px; margin: 0; color: var(--muted); font-size: 15px; line-height: 1.7; }

.matrix-summary { display: grid; grid-template-columns: repeat(4, minmax(130px, 190px)); gap: 10px; margin-top: 22px; }
.matrix-summary div { padding: 13px 15px; border: 1px solid var(--line); border-radius: 15px; background: var(--paper); }
.matrix-summary strong { display: block; font-size: 22px; }
.matrix-summary span { color: var(--muted); font-size: 11px; }

.matrix-card { width: 100%; min-width: 0; margin-top: 20px; overflow: hidden; border: 1px solid var(--line); border-radius: 22px; background: var(--paper); box-shadow: 0 18px 48px rgba(53, 47, 89, .08); }
.matrix-card-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 22px; padding: 18px 22px; border-bottom: 1px solid var(--line); }
.matrix-card-header > div:first-child > span { color: var(--primary); font-size: 11px; font-weight: 800; }
.matrix-card-header h2 { margin: 4px 0 0; font-size: 20px; }
.matrix-filters { display: flex; gap: 10px; }
.matrix-filters label span { display: block; margin-bottom: 4px; color: var(--muted); font-size: 10px; }
.matrix-filters select { min-width: 130px; padding: 8px 28px 8px 10px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); color: var(--ink); font-size: 12px; }

.matrix-legend { display: flex; flex-wrap: wrap; gap: 14px; padding: 10px 22px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.matrix-legend span { display: inline-flex; align-items: center; gap: 5px; }
.matrix-legend i { display: inline-grid; width: 20px; height: 20px; place-items: center; border-radius: 6px; font-style: normal; font-weight: 850; }
.legend-demo { background: var(--primary-soft); color: var(--primary); }
.legend-ok { background: var(--green-soft); color: var(--green); }
.legend-adjust { background: var(--amber-soft); color: var(--amber); }
.legend-reject { background: var(--red-soft); color: var(--red); }
.legend-experienced { background: #e8f2ff; color: #316ea8; }
.legend-deferred { background: #e8e9ed; color: #777b85; }
.legend-pending { background: #f1f0f5; color: var(--muted); }

.matrix-scroll-hint { display: none; }
.matrix-scroll { width: 100%; max-width: 100%; max-height: 650px; overflow-x: scroll; overflow-y: auto; overscroll-behavior-x: contain; -webkit-overflow-scrolling: touch; touch-action: pan-x pan-y; }
#interactionMatrix { width: 100%; min-width: 680px; border-collapse: separate; border-spacing: 0; table-layout: fixed; }
#interactionMatrix th, #interactionMatrix td { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
#interactionMatrix thead th { position: sticky; top: 0; z-index: 5; width: 80px; min-width: 80px; height: 98px; padding: 8px 6px; background: #f8f7fb; color: var(--muted); font-size: 10px; line-height: 1.3; text-align: center; vertical-align: bottom; }
#interactionMatrix thead th > span { display: block; }
#interactionMatrix thead th small { display: block; margin-top: 5px; font-size: 8px; font-weight: 800; }
#interactionMatrix thead th .column-stage { padding: 3px 2px; border-radius: 5px; }
#interactionMatrix thead th .column-deferred { color: #777b85; }
#interactionMatrix thead th.is-deferred-column { background: #e8e9ed; color: #777b85; }
#interactionMatrix thead th:first-child { left: 0; z-index: 7; width: 180px; min-width: 180px; padding: 12px 14px; text-align: left; }
#interactionMatrix tbody th { position: sticky; left: 0; z-index: 3; width: 180px; min-width: 180px; padding: 13px 14px; background: #faf9fc; text-align: left; }
#interactionMatrix tbody th strong { display: block; font-size: 13px; }
#interactionMatrix tbody th span { display: block; margin-top: 3px; color: var(--muted); font-size: 10px; font-weight: 500; line-height: 1.35; }
#interactionMatrix td { width: 80px; min-width: 80px; height: 72px; padding: 6px; background: var(--paper); }

.matrix-cell { position: relative; display: grid; width: 100%; height: 100%; min-height: 58px; place-items: center; border: 1px solid transparent; border-radius: 10px; background: #f5f4f8; color: #aaa6b5; font-size: 20px; font-weight: 850; cursor: pointer; touch-action: manipulation; }
.matrix-cell-stage { position: absolute; top: 4px; right: 4px; min-width: 19px; padding: 2px 4px; border-radius: 5px; font-size: 8px; font-weight: 900; line-height: 1.2; }
.matrix-cell:hover, .matrix-cell:focus-visible { border-color: var(--primary); outline: none; }
.matrix-cell.is-selected { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.matrix-cell.has-demo { background: var(--primary-soft); color: var(--primary); }
.matrix-cell.result-ok { background: var(--green-soft); color: var(--green); }
.matrix-cell.result-adjust { background: var(--amber-soft); color: var(--amber); }
.matrix-cell.result-reject { background: var(--red-soft); color: var(--red); }
.matrix-cell.is-excluded { border-color: #f1cbd3; box-shadow: none; cursor: not-allowed; }
.matrix-cell.is-excluded:hover, .matrix-cell.is-excluded:focus-visible { border-color: #f1cbd3; outline: none; }
.matrix-cell.is-deferred, .matrix-cell.is-deferred.has-demo { border-color: #d9dbe1; background: #e8e9ed; color: #777b85; box-shadow: none; cursor: not-allowed; }
.matrix-cell.is-deferred:hover, .matrix-cell.is-deferred:focus-visible { border-color: #d9dbe1; outline: none; }
.matrix-cell.structure-invalid { background: #f1f0f5; color: #918d9f; }
.matrix-cell.structure-duplicate { background: #eef1f5; color: #657084; }
.matrix-cell.is-experienced:not(.result-ok):not(.result-adjust):not(.result-reject):not(.structure-invalid):not(.structure-duplicate) { background: #e8f2ff; color: #316ea8; }
.matrix-cell.has-stage::after { content: ""; position: absolute; right: 6px; bottom: 6px; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }
.matrix-cell.is-filtered-out { opacity: .13; }

.stage-i { background: #e9e7ff; color: #5749c5; }
.stage-ii { background: #e2f1ff; color: #23669c; }
.stage-iii { background: #fff0d6; color: #8a580c; }
.stage-iv { background: #e2f6ed; color: #14734f; }

.learning-stage-guide { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; border-bottom: 1px solid var(--line); background: var(--line); }
.learning-stage-guide div { display: flex; gap: 8px; align-items: center; min-width: 0; padding: 10px 14px; background: #faf9fc; }
.learning-stage-guide b { flex: 0 0 auto; padding: 4px 7px; border-radius: 7px; font-size: 10px; }
.learning-stage-guide span { color: var(--muted); font-size: 10px; line-height: 1.35; }

.matrix-modal[hidden] { display: none; }
.matrix-modal { position: fixed; inset: 0; z-index: 1000; display: grid; padding: 24px; place-items: center; }
.matrix-modal-backdrop { position: absolute; inset: 0; background: rgba(26, 23, 47, .62); backdrop-filter: blur(5px); }
.matrix-inspector { position: relative; z-index: 1; width: min(1080px, 100%); max-height: calc(100vh - 48px); padding: 22px; overflow-y: auto; border: 1px solid var(--line); border-radius: 22px; background: var(--paper); box-shadow: 0 28px 80px rgba(22, 18, 51, .3); }
.inspector-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.cell-code { display: inline-block; padding: 5px 8px; border-radius: 8px; background: var(--ink); color: white; font-size: 11px; font-weight: 800; }
.cell-position { margin-left: 7px; color: var(--muted); font-size: 11px; }
.learning-stage-badge { display: inline-block; margin-left: 7px; padding: 5px 8px; border-radius: 8px; font-size: 10px; font-weight: 850; }
.inspector-header h2 { margin: 10px 0 0; font-size: 25px; }
.learning-stage-description { margin: 5px 0 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.demo-action { padding: 11px 15px; border-radius: 12px; background: var(--primary); color: white; font-size: 13px; font-weight: 750; text-decoration: none; white-space: nowrap; }
.demo-action.is-disabled { background: #f1f0f5; color: var(--muted); pointer-events: none; }
.inspector-actions { display: flex; align-items: center; gap: 9px; }
.modal-close { display: grid; width: 38px; height: 38px; padding: 0; place-items: center; border: 1px solid var(--line); border-radius: 11px; background: var(--paper); color: var(--muted); font-size: 25px; line-height: 1; }

.combination-summary { display: grid; grid-template-columns: 1fr auto 1fr; gap: 18px; align-items: center; margin-top: 18px; }
.combination-summary > div:not(.combination-arrow) { min-height: 115px; padding: 17px; border-radius: 16px; background: #f8f7fb; }
.combination-summary span, .example-box span, .inspector-form label > span { display: block; margin-bottom: 6px; color: var(--muted); font-size: 11px; }
.combination-summary strong { font-size: 17px; }
.combination-summary p { margin: 5px 0 0; color: var(--muted); font-size: 12px; line-height: 1.55; }
.combination-arrow { color: var(--primary); font-size: 24px; font-weight: 800; }
.example-box { margin-top: 12px; padding: 15px 17px; border-left: 4px solid var(--primary); border-radius: 4px 14px 14px 4px; background: var(--primary-soft); }
.example-box p { margin: 0; font-size: 13px; line-height: 1.6; }

.inline-experience { margin-top: 18px; padding: 17px; border: 1px solid var(--line); border-radius: 18px; background: #faf9fc; }
.inline-experience > header { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 14px; }
.inline-experience > header span { color: var(--primary); font-size: 10px; font-weight: 800; letter-spacing: .08em; }
.inline-experience h3 { margin: 3px 0 0; font-size: 18px; }
#resetExperience { padding: 8px 11px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); color: var(--muted); font-size: 11px; }
.experience-phone { width: min(390px, 100%); margin: 0 auto; overflow: hidden; border: 8px solid var(--ink); border-radius: 34px; background: var(--paper); box-shadow: 0 18px 45px rgba(36, 34, 58, .18); }
.experience-phone-topbar { position: relative; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; height: 44px; padding: 0 15px; border-bottom: 1px solid var(--line); background: #fbfaff; }
.experience-phone-topbar span { color: var(--ink); font-size: 10px; font-weight: 900; letter-spacing: .08em; }
.experience-phone-topbar i { width: 78px; height: 20px; border-radius: 999px; background: var(--ink); }
.experience-phone-topbar small { justify-self: end; color: var(--muted); font-size: 9px; font-weight: 750; }
.experience-phone-screen { height: min(660px, calc(100vh - 230px)); min-height: 480px; padding: 14px; overflow-y: auto; overscroll-behavior: contain; background: #f8f7fb; scrollbar-width: thin; scrollbar-color: #c9c5d7 transparent; }
.experience-flow { display: flex; align-items: stretch; flex-direction: column; gap: 14px; }
.experience-side { min-width: 0; }
.experience-feedback { min-height: 20px; margin-top: 12px; color: var(--muted); font-size: 12px; text-align: center; }
.experience-feedback.is-success { color: var(--green); font-weight: 750; }
.experience-feedback.is-error { color: var(--red); }

.experience-word-card, .experience-visual-card { display: grid; min-height: 170px; padding: 14px; place-content: center; border-radius: 14px; background: linear-gradient(145deg, #f1eeff, #fff7ed); text-align: center; }
.experience-word-card { gap: 12px; padding: 18px; place-content: stretch; text-align: left; }
.experience-word-card .emoji, .experience-visual-card .emoji { font-size: 46px; }
.experience-word-card .emoji { font-size: 34px; line-height: 1; }
.experience-word-card strong, .experience-big-word { display: block; font-size: 38px; letter-spacing: .08em; }
.learning-card-top { display: flex; align-items: center; justify-content: flex-end; gap: 12px; }
.learning-card-type { padding: 5px 9px; border: 1px solid rgba(101, 88, 211, .16); border-radius: 999px; background: rgba(255, 255, 255, .72); color: var(--primary); font-size: 10px; font-weight: 800; text-transform: capitalize; }
.learning-card-word-section { display: grid; justify-items: center; padding: 15px; border-radius: 13px; background: rgba(255, 255, 255, .58); }
.learning-card-reading-row { display: flex; align-items: center; justify-content: center; gap: 9px; }
.learning-card-reading { display: flex; justify-content: center; gap: 3px; padding-top: 15px; }
.learning-card-reading ruby { color: var(--ink); font-size: clamp(36px, 5vw, 50px); font-weight: 850; line-height: 1.05; ruby-align: center; }
.learning-card-reading rt { color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; font-weight: 750; letter-spacing: .02em; }
.learning-card-written { display: flex; align-items: center; gap: 7px; margin-top: 8px; color: var(--muted); }
.learning-card-written span { font-size: 9px; }
.learning-card-written strong { color: var(--ink); font-size: 16px; letter-spacing: 0; }
.learning-card-meaning { margin-top: 9px; color: var(--ink); font-size: 20px; font-weight: 800; line-height: 1.35; text-align: center; }
.learning-card-context { width: 100%; margin: 9px 0 0; padding-top: 10px; border-top: 1px solid rgba(101, 88, 211, .14); color: var(--muted); font-size: 12px; line-height: 1.55; }
.learning-card-constraint { width: 100%; margin: 7px 0 0; color: var(--muted); font-size: 11px; line-height: 1.5; }
.learning-card-constraint strong { display: inline; margin-right: 6px; color: var(--primary); font-size: 9px; letter-spacing: .06em; text-transform: uppercase; }
.learning-card-examples { display: grid; gap: 7px; }
.learning-card-examples > header { display: flex; align-items: center; justify-content: space-between; padding: 0 2px; }
.learning-card-examples > header span { color: var(--primary); font-size: 9px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.learning-card-examples > header small { color: var(--muted); font-size: 10px; }
.learning-card-example { display: grid; grid-template-columns: 20px 1fr auto; gap: 9px; align-items: center; padding: 10px 11px; border-radius: 11px; background: rgba(255, 255, 255, .72); }
.learning-card-example > div { min-width: 0; }
.learning-card-example-number { display: grid; width: 20px; height: 20px; place-items: center; border-radius: 50%; background: var(--primary-soft); color: var(--primary); font-size: 9px; font-weight: 850; }
.learning-card-example p { margin: 3px 0 0; color: var(--muted); font-size: 11px; line-height: 1.4; white-space: pre-line; }
.learning-card-sentence { display: grid; gap: 8px; }
.sentence-line { display: flex; flex-wrap: wrap; gap: 5px 4px; align-items: end; }
.sentence-speaker { align-self: center; margin-right: 2px; color: var(--primary); font-size: 10px; font-weight: 900; }
.sentence-token { display: inline-grid; grid-template-rows: 13px auto 13px; justify-items: center; min-width: 18px; }
.sentence-token-kana { color: var(--muted); font-size: 8px; line-height: 13px; }
.sentence-token-japanese { border-bottom: 2px solid rgba(101, 88, 211, .45); color: var(--ink); font-size: 15px; font-weight: 750; line-height: 1.35; white-space: nowrap; }
.sentence-token-romaji { color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 8px; line-height: 13px; white-space: nowrap; }
.sentence-punctuation { align-self: center; padding-top: 13px; color: var(--muted); font-size: 15px; }
.experience-reading { display: inline-flex; justify-content: center; gap: 2px; margin-top: 9px; padding-top: 13px; }
.experience-reading ruby { color: var(--ink); font-size: 38px; font-weight: 850; line-height: 1; ruby-align: center; }
.experience-reading rt { color: var(--muted); font-size: 12px; font-weight: 750; letter-spacing: .02em; }
.experience-meaning { margin-top: 3px; color: var(--muted); font-size: 13px; }
.experience-word-card small, .experience-visual-card small { display: block; margin-top: 5px; color: var(--muted); font-size: 12px; }
.experience-big-word { display: grid; min-height: 170px; padding: 14px; place-content: center; border-radius: 14px; background: var(--primary-soft); font-weight: 850; text-align: center; }
.experience-meaning-card { display: grid; min-height: 170px; padding: 20px; place-items: center; border-radius: 14px; background: linear-gradient(135deg, #f1efff, #fff8ef); text-align: center; }
.experience-meaning-card strong { color: var(--ink); font-size: clamp(24px, 5vw, 34px); line-height: 1.3; }
.experience-big-word mark { padding: 0; border-bottom: 5px solid var(--primary); background: transparent; color: var(--primary); }
.prompt-answer-details { display: grid; grid-template-columns: 1fr auto; gap: 9px; align-items: center; width: 100%; margin-top: 14px; padding-top: 12px; border-top: 1px solid rgba(101, 83, 216, .18); text-align: left; }
.prompt-answer-details.is-audio-detail { grid-template-columns: 1fr; }
.prompt-answer-details.is-meaning-detail { grid-template-columns: 1fr auto; }
.prompt-answer-details[hidden] { display: none; }
.prompt-answer-details > div { min-width: 0; }
.prompt-detail-romaji { display: block; color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; font-weight: 750; letter-spacing: 0; }
.prompt-answer-details strong { display: block; margin-top: 3px; color: var(--muted); font-size: 13px; letter-spacing: 0; }
.prompt-detail-reading { display: flex; gap: 2px; align-items: flex-end; }
.prompt-detail-reading ruby { color: var(--ink); font-size: 27px; font-weight: 850; ruby-align: center; }
.prompt-detail-reading rt { color: var(--muted); font-size: 10px; font-weight: 750; }
.prompt-detail-audio { padding: 9px 10px; border: 0; border-radius: 10px; background: var(--paper); color: var(--primary); font-size: 11px; font-weight: 750; white-space: nowrap; }
.experience-audio-button, .experience-primary { width: 100%; padding: 12px; border: 0; border-radius: 12px; font-weight: 750; }
.experience-audio-button { margin-top: 10px; background: var(--primary-soft); color: var(--primary); }
.learning-card-audio { display: inline-grid; width: 30px; height: 30px; flex: 0 0 30px; padding: 0; place-items: center; border: 0; border-radius: 50%; background: var(--primary-soft); color: var(--primary); font-size: 14px; line-height: 1; cursor: pointer; }
.learning-card-audio:hover, .learning-card-audio:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.experience-audio-prompt { display: inline-grid; width: 64px; height: 64px; margin: 0 auto 8px; padding: 0; place-items: center; border: 0; border-radius: 50%; background: var(--primary-soft); color: var(--primary); font-size: 30px; line-height: 1; cursor: pointer; }
.experience-audio-prompt:hover, .experience-audio-prompt:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; }
.experience-audio-fallback { margin: 0 auto; padding: 4px 8px; border: 0; background: transparent; color: var(--muted); font-size: 12px; text-decoration: underline; cursor: pointer; }
.experience-audio-word { min-height: 64px; display: grid; place-items: center; color: var(--ink); font-size: 36px; font-weight: 850; }
.experience-primary { background: var(--primary); color: white; }

.experience-question { margin: 0 0 10px; color: var(--muted); font-size: 12px; }
.experience-input-rule { margin: -4px 0 10px; color: var(--primary); font-size: 11px; font-weight: 700; }
.experience-options { display: grid; grid-template-columns: 1fr; gap: 8px; }
.experience-options button, .compose-token { min-height: 50px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 11px; background: var(--paper); color: var(--ink); font-weight: 750; }
.experience-options button.is-correct { border-color: var(--green); background: var(--green-soft); color: var(--green); }
.experience-options button.is-wrong { border-color: var(--red); background: var(--red-soft); color: var(--red); }
.experience-form { display: flex; gap: 8px; }
.experience-form input { min-width: 0; flex: 1; padding: 11px; border: 1px solid var(--line); border-radius: 11px; outline: 0; }
.experience-form input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.experience-form button { padding: 0 14px; border: 0; border-radius: 11px; background: var(--primary); color: white; font-weight: 750; }
.compose-bank { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.compose-token { min-width: 62px; font-size: 24px; }
.compose-token:disabled { background: #f1f0f5; color: #aaa6b5; }
.compose-token.is-wrong { border-color: var(--red); background: var(--red-soft); color: var(--red); }
.compose-output { min-height: 54px; margin: 10px 0; padding: 10px; border: 1px dashed var(--line); border-radius: 11px; color: var(--primary); font-size: 24px; font-weight: 850; text-align: center; }
.compose-reset { width: 100%; padding: 8px; border: 0; background: transparent; color: var(--muted); font-size: 11px; }

.inspector-form { display: grid; grid-template-columns: minmax(220px, .55fr) 1.45fr; gap: 12px; align-items: start; margin-top: 18px; }
.inspector-form select, .inspector-form textarea { width: 100%; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); color: var(--ink); outline: none; }
.inspector-form select { padding: 11px 12px; }
.inspector-form textarea { min-height: 105px; padding: 12px; resize: vertical; line-height: 1.55; }
.inspector-form select:focus, .inspector-form textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.notes-field { grid-column: auto; }

.inspector-footer { display: grid; grid-template-columns: 130px 1fr 130px; gap: 12px; align-items: center; margin-top: 17px; }
.inspector-footer button { padding: 11px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); color: var(--ink); font-weight: 750; }
.inspector-footer .next-cell { border-color: var(--primary); background: var(--primary); color: white; }
.inspector-footer button:disabled { opacity: .4; }
#saveState { color: var(--muted); font-size: 11px; text-align: center; }
.matrix-footnote { margin: 15px 2px 0; color: var(--muted); font-size: 12px; line-height: 1.6; }

@media (max-width: 820px) {
  .matrix-page { width: calc(100% - 24px); padding-top: 18px; }
  .matrix-header nav { margin-bottom: 28px; }
  .matrix-header > p { font-size: 14px; }
  .matrix-summary { grid-template-columns: 1fr 1fr; }
  .matrix-card-header { align-items: flex-start; flex-direction: column; padding: 16px; }
  .matrix-filters { width: 100%; }
  .matrix-filters label { flex: 1; }
  .matrix-filters select { width: 100%; min-width: 0; }
  .matrix-legend { padding-inline: 16px; }
  .learning-stage-guide { grid-template-columns: 1fr 1fr; }
  .learning-stage-guide div { align-items: flex-start; flex-direction: column; gap: 5px; padding: 9px 11px; }
  .matrix-scroll-hint { display: block; padding: 8px 16px; border-bottom: 1px solid var(--line); background: #faf9fc; color: var(--primary); font-size: 11px; font-weight: 750; text-align: center; }
  .matrix-scroll { max-height: 520px; }
  #interactionMatrix { width: 680px; min-width: 680px; }
  #interactionMatrix thead th { width: 66px; min-width: 66px; }
  #interactionMatrix thead th:first-child, #interactionMatrix tbody th { width: 126px; min-width: 126px; padding-inline: 10px; }
  #interactionMatrix td { width: 66px; min-width: 66px; }
  .matrix-modal { padding: 0; }
  .matrix-inspector { width: 100%; height: 100%; max-height: 100vh; padding: 17px; border: 0; border-radius: 0; }
  .inspector-header h2 { font-size: 20px; }
  .combination-summary { grid-template-columns: 1fr; gap: 9px; }
  .combination-arrow { transform: rotate(90deg); text-align: center; }
  .inspector-form { grid-template-columns: 1fr; }
  .notes-field { grid-column: auto; }
  .inspector-footer { grid-template-columns: 1fr 1fr; }
  #saveState { grid-column: 1 / -1; grid-row: 2; }
}

@media (max-width: 440px) {
  .matrix-filters { flex-direction: column; }
  .inspector-header { flex-direction: column; }
  .learning-stage-guide { grid-template-columns: 1fr; }
  .learning-stage-guide div { flex-direction: row; align-items: center; }
  .experience-phone { border-width: 5px; border-radius: 26px; }
  .experience-phone-screen { height: min(620px, calc(100vh - 165px)); min-height: 430px; }
  .experience-word-card { padding: 16px; }
  .learning-card-reading ruby { font-size: 38px; }
  .learning-card-example { grid-template-columns: 20px 1fr auto; }
}