/* pintokuru — Design A：落ち着いたオフホワイト × グリーン、アクセントにオレンジ。線のアイコン、角丸は控えめ */
:root {
  --bg: #f4f3ef;
  --surface: #ffffff;
  --panel: #efeee9;
  --text: #1f2a2a;
  --muted: #6b7472;
  --line: #d9d6cf;
  --line-strong: #b9c4c0;
  --green: #2e7d6f;
  --green-dark: #23645a;
  --green-soft: #e3efec;
  --orange: #f0a050;
  --orange-soft: #fbe3c4;
  --radius: 14px;
  --font: "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif;
  --font-latin: "Outfit", "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font); line-height: 1.65; font-size: 16px; }
a { color: var(--green-dark); }
.wrap { max-width: 1040px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.center { text-align: center; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }

/* icons */
.ico { width: 22px; height: 22px; flex: none; vertical-align: middle; }
.ico-sm { width: 16px; height: 16px; }
.ico-lg { width: 40px; height: 40px; stroke-width: 1.3; }
.ico-xl { width: 56px; height: 56px; stroke-width: 1.2; }

/* header / logo */
.site-header { border-bottom: 1px solid var(--line); background: var(--bg); }
.header-inner { display: flex; gap: 16px; align-items: center; justify-content: space-between; min-height: 64px; flex-wrap: wrap; padding-top: 8px; padding-bottom: 8px; }
.logo { display: inline-flex; align-items: center; gap: 8px; color: var(--text); text-decoration: none; }
.logo-mark { width: 30px; height: 30px; color: var(--text); }
.logo-dot { fill: var(--orange); }
.logo-type { font-family: var(--font-latin); font-weight: 600; font-size: 1.4rem; letter-spacing: .01em; line-height: 1; }
.logo:hover .logo-dot { animation: focus-pulse .6s ease; }
@keyframes focus-pulse { 50% { transform: scale(1.4); transform-origin: 20px 20px; } }
.header-search { display: flex; align-items: center; gap: 6px; flex: 0 1 300px; min-width: 0; background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 0 14px; color: var(--muted); }
.header-search input { flex: 1; min-width: 0; border: 0; background: transparent; padding: 9px 0; font: inherit; font-size: .95rem; color: var(--text); outline: none; }
.header-search:focus-within { border-color: var(--green); }
.site-footer { margin-top: 56px; padding: 22px 0 32px; text-align: center; border-top: 1px solid var(--line); }
.site-footer p { margin: 0; }
main { padding-top: 18px; }

/* type */
.page-title { font-size: 1.5rem; line-height: 1.4; margin: 6px 0 10px; font-weight: 700; text-wrap: balance; }
.section-title { font-size: 1.05rem; margin: 28px 0 12px; font-weight: 700; }
.section-title.small { font-size: .95rem; }
.crumbs { font-size: .85rem; color: var(--muted); display: flex; gap: 6px; align-items: center; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.crumbs a { color: var(--text); text-decoration: none; }
.rule-title { display: flex; align-items: center; gap: 16px; font-size: 1.15rem; font-weight: 700; margin: 40px 0 18px; }
.rule-title::before, .rule-title::after { content: ""; flex: 1; height: 1px; background: var(--line-strong); }

/* buttons */
.btn, .btn-dir, .fb-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 8px 20px;
  border-radius: 12px; font: inherit; font-weight: 700; font-size: 1rem; cursor: pointer; text-decoration: none;
  border: 1.5px solid var(--green); background: var(--green); color: #fff;
  transition: background .15s, border-color .15s, color .15s, transform .08s;
  -webkit-tap-highlight-color: transparent;
}
.btn:active, .btn-dir:active, .fb-btn:active { transform: scale(.98); }
.btn:hover { background: var(--green-dark); border-color: var(--green-dark); }
.btn-ghost { background: var(--surface); color: var(--green-dark); border-color: var(--line-strong); }
.btn-ghost:hover { background: var(--green-soft); border-color: var(--green); }
.btn-small { min-height: 40px; padding: 4px 16px; font-size: .9rem; }
.linklike { background: none; border: 0; color: var(--muted); text-decoration: underline; cursor: pointer; padding: 6px; font: inherit; }
.icon-btn { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; border: 0; background: transparent; color: var(--text); cursor: pointer; text-decoration: none; flex: none; }
.icon-btn:hover { background: var(--panel); }
.icon-btn .ico { width: 24px; height: 24px; }

/* home */
.hero { text-align: center; padding: 34px 0 4px; }
.hero h1 { font-size: clamp(1.9rem, 5vw, 3rem); font-weight: 700; margin: 0 0 22px; letter-spacing: .02em; }
.big-search { display: flex; align-items: center; gap: 10px; max-width: 620px; margin: 0 auto; padding: 0 22px; background: var(--surface); border: 1.5px solid var(--line-strong); border-radius: 999px; color: var(--text); }
.big-search:focus-within { border-color: var(--green); box-shadow: 0 0 0 4px var(--green-soft); }
.big-search input { flex: 1; min-width: 0; border: 0; outline: none; background: transparent; padding: 16px 0; font: inherit; font-size: 1.1rem; color: var(--text); }
.examples { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin: 18px 0 0; }
.chip { display: inline-flex; align-items: center; padding: 6px 22px; border-radius: 999px; background: var(--surface); border: 1.5px solid var(--text); text-decoration: none; color: var(--text); font-size: .95rem; }
.chip:hover { background: var(--green-soft); border-color: var(--green); }
.chip-strong { border-color: var(--green); color: var(--green-dark); font-weight: 700; }
.loop { list-style: none; padding: 0; margin: 34px auto 0; display: flex; justify-content: center; align-items: flex-start; gap: 10px; flex-wrap: wrap; color: var(--text); }
.loop li { display: flex; flex-direction: column; align-items: center; gap: 6px; font-size: .9rem; min-width: 64px; }
.loop li .ico-lg { color: var(--text); }
.loop li:nth-child(3) .ico-lg { color: var(--orange); }
.loop li:nth-child(5) .ico-lg { color: var(--green); }
.loop .sep { min-width: 0; padding-top: 9px; color: var(--muted); }
.grade-row { display: grid; grid-template-columns: 52px 1fr; gap: 12px; align-items: start; max-width: 860px; margin: 0 auto 14px; }
.grade-label { margin: 10px 0 0; font-size: .85rem; font-weight: 700; color: var(--green-dark); font-family: var(--font-latin), var(--font); letter-spacing: .04em; }
.unit-grid { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 200px), 1fr)); gap: 10px; }
.unit-tile { display: flex; flex-direction: column; gap: 6px; padding: 14px 16px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); color: var(--text); text-decoration: none; transition: border-color .15s, transform .15s; min-height: 76px; }
.unit-tile:hover { border-color: var(--green); transform: translateY(-2px); }
.unit-tile b { font-size: 1.02rem; }
.unit-tile .pill { align-self: flex-start; }
.unit-tile .dots { display: flex; gap: 4px; }
.unit-tile .dots i { width: 6px; height: 6px; border-radius: 50%; background: var(--green); }
.unit-tile.is-empty { background: transparent; border-style: dashed; }
.unit-tile .soon { font-size: .78rem; color: var(--muted); }
@media (max-width: 520px) { .grade-row { grid-template-columns: 1fr; gap: 6px; } .grade-label { margin: 0; } }
.unit-list { list-style: none; padding: 0; margin: 0 auto; max-width: 780px; display: grid; gap: 16px; }
.unit-card { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 28px; border-radius: 18px; background: var(--surface); border: 1px solid var(--line); color: var(--text); text-decoration: none; transition: border-color .15s, transform .15s; overflow: hidden; }
.unit-card:hover { border-color: var(--green); transform: translateY(-2px); }
.unit-text { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; }
.unit-text b { font-size: 3.4rem; line-height: 1; font-weight: 700; }
.unit-illust { width: 46%; max-width: 260px; height: auto; flex: none; }
.pill { font-size: .8rem; padding: 2px 12px; border-radius: 999px; border: 1px solid var(--line-strong); color: var(--text); background: var(--surface); }
.dots { display: flex; gap: 6px; flex-wrap: wrap; max-width: 180px; }
.dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--green); opacity: .85; }

/* game cards (stage select) */
.game-cards { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 220px), 1fr)); }
.game-cards.compact { grid-template-columns: repeat(auto-fill, minmax(min(100%, 200px), 1fr)); }
.game-card { display: flex; flex-direction: column; height: 100%; border-radius: var(--radius); overflow: hidden; background: var(--surface); border: 1px solid var(--line); color: var(--text); text-decoration: none; transition: border-color .15s, transform .15s; }
.game-card:hover { border-color: var(--green); transform: translateY(-2px); }
.gc-art { position: relative; display: grid; place-items: center; aspect-ratio: 16 / 9; background: linear-gradient(160deg, var(--green-soft), var(--panel)); color: var(--green-dark); }
.game-cards li:nth-child(3n+2) .gc-art { background: linear-gradient(160deg, var(--orange-soft), var(--panel)); color: #b86a1f; }
.game-cards li:nth-child(3n+3) .gc-art { background: linear-gradient(160deg, #e6e9ee, var(--panel)); color: #4b5b6b; }
.gc-ico { width: 56px; height: 56px; stroke-width: 1.2; }
.gc-clear { position: absolute; right: 10px; top: 10px; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--green); color: #fff; }
.gc-clear .ico { width: 20px; height: 20px; }
.gc-clear[hidden] { display: none; }
.game-card.is-clear { border-color: var(--green); }
.gc-body { display: flex; flex-direction: column; gap: 6px; padding: 12px 14px 14px; }
.gc-title { font-weight: 700; font-size: 1rem; line-height: 1.4; }
.gc-meta { display: flex; flex-wrap: wrap; gap: 4px 10px; font-size: .78rem; color: var(--muted); align-items: center; }
.gc-meta > span { display: inline-flex; align-items: center; gap: 3px; }
.gc-goal { color: var(--green-dark); }
.gc-seen { color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 0 8px; }
.tags { display: flex; flex-wrap: wrap; gap: 4px; }
.tag { font-size: .75rem; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); }
.inline-list { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 18px; }
.result-tools { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; margin-top: 20px; }
.inline-form select, .filters select { font: inherit; font-size: .9rem; padding: 6px 8px; border-radius: 10px; border: 1px solid var(--line-strong); background: var(--surface); margin-left: 4px; }
.filters { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; background: var(--surface); padding: 12px 14px; border-radius: var(--radius); border: 1px solid var(--line); font-size: .9rem; margin-bottom: 12px; }
.pager { display: flex; gap: 12px; justify-content: center; margin: 22px 0; }
.unit-title { font-size: 2.6rem; margin-bottom: 0; }
.goal-block { margin: 26px 0; }
.goal-title { font-size: 1.1rem; margin: 0 0 12px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.goal-title .count { font-family: var(--font-latin); font-size: .8rem; font-weight: 500; color: var(--muted); border: 1px solid var(--line-strong); padding: 0 10px; border-radius: 999px; }
.empty, .empty-state { text-align: center; padding-top: 10px; }
.empty-ico { color: var(--green); margin-top: 10px; }
.empty-state .choice-list { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin: 20px 0; }
.empty-state .game-cards { text-align: left; }
.reset-form { margin-top: 26px; }

/* work page */
.work { max-width: 760px; margin: 0 auto; }
.topbar { display: flex; align-items: center; gap: 8px; margin: -4px -8px 4px; }
.topbar .crumbs { flex: 1; }
.progress-dots { display: flex; gap: 7px; align-items: center; padding: 0 6px; }
.progress-dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--line); transition: background .3s; }
.progress-dots i.on { background: var(--green); }
.work-title { text-align: center; font-size: clamp(1.5rem, 4.5vw, 2rem); font-weight: 700; margin: 10px 0 2px; text-wrap: balance; }
.work-try { text-align: center; margin: 0 0 8px; color: var(--muted); font-size: .92rem; }
.work-angle { display: flex; justify-content: center; gap: 8px; margin: 0 0 14px; flex-wrap: wrap; }
.work-angle span { display: inline-flex; align-items: center; gap: 4px; font-size: .78rem; color: var(--green-dark); background: var(--surface, #fff); border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px; }
.gc-style { color: var(--text); background: #ecebe6; border-radius: 999px; padding: 0 8px; }
.stage { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; overflow: hidden; }
.frame-box { position: relative; width: 100%; height: min(var(--frame-h, 560px), 82vh); min-height: 460px; }
.frame-box iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; background: var(--bg); }
.frame-overlay { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; text-align: center; background: rgba(244,243,239,.96); padding: 16px; }
.frame-overlay[data-state="ok"] { display: none; }
.frame-overlay .overlay-error { display: none; }
.frame-overlay[data-state="error"] .overlay-error { display: block; }
.frame-overlay[data-state="error"] .overlay-loading { display: none; }
.overlay-actions { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.spinner { display: inline-block; width: 36px; height: 36px; border-radius: 50%; border: 3px solid var(--line); border-top-color: var(--green); animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.toast { position: absolute; left: 50%; top: 18px; transform: translateX(-50%); display: inline-flex; align-items: center; gap: 6px;
  background: var(--green); color: #fff; font-weight: 700; padding: 8px 18px 8px 12px; border-radius: 999px; pointer-events: none; box-shadow: 0 6px 18px rgba(31,42,42,.18); }
.toast.show { animation: toast 1.6s ease forwards; }
@keyframes toast { 0% { opacity: 0; transform: translate(-50%, -8px); } 12% { opacity: 1; transform: translate(-50%, 0); } 80% { opacity: 1; } 100% { opacity: 0; } }
.notice { background: var(--green-soft); border-radius: 10px; padding: 10px 14px; }

.common-nav { margin-top: 20px; display: grid; gap: 12px; }
.fb { margin: 0; }
.fb-buttons, .dir-buttons { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.fb-btn { min-height: 56px; background: var(--surface); color: var(--text); border-color: var(--line-strong); font-weight: 500; }
.fb-btn .ico { width: 24px; height: 24px; color: var(--green-dark); }
.fb-btn .on { display: none; }
.fb-btn[aria-pressed="true"] { border-color: var(--green); background: var(--green-soft); color: var(--green-dark); font-weight: 700; }
.fb-btn[aria-pressed="true"] .on { display: block; }
.fb-btn[aria-pressed="true"] .off { display: none; }
.fb-btn:hover { border-color: var(--green); }
.btn-dir { min-height: 56px; background: var(--surface); color: var(--green-dark); border-color: var(--green); }
.btn-dir:hover { background: var(--green-soft); }
.btn-dir-main { background: var(--green); color: #fff; }
.btn-dir-main:hover { background: var(--green-dark); }
.common-nav.glow .btn-dir { animation: nudge 1.1s ease 2; }
@keyframes nudge { 50% { transform: translateY(-3px); } }
.sub-nav { display: flex; justify-content: center; gap: 18px; font-size: .9rem; }
.sub-nav a { color: var(--muted); display: inline-flex; align-items: center; gap: 4px; text-decoration: none; }
.sub-nav a:hover { color: var(--green-dark); }
.more { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 12px; }
.more + .more { margin-top: 0; }
.more summary { cursor: pointer; color: var(--muted); font-size: .9rem; display: inline-flex; align-items: center; gap: 6px; list-style: none; }
.more summary::-webkit-details-marker { display: none; }
.info { display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; margin: 10px 0 0; font-size: .9rem; }
.info dt { color: var(--muted); font-size: .8rem; padding-top: 2px; }
.info dd { margin: 0; }
.report fieldset { border: 0; padding: 0; margin: 8px 0; display: grid; gap: 2px; }
.report textarea { width: 100%; font: inherit; padding: 8px; border-radius: 10px; border: 1px solid var(--line-strong); margin: 4px 0 8px; }
.radio { display: flex; align-items: center; gap: 6px; min-height: 34px; font-size: .9rem; }

/* ads */
.ad-area { margin-top: 32px; }
.ad-slot { min-height: 100px; border: 1px dashed var(--line-strong); border-radius: 12px; display: flex; align-items: flex-start; padding: 6px 10px; }
.ad-label { font-size: .7rem; color: var(--muted); border: 1px solid var(--line); padding: 0 6px; border-radius: 4px; }

@media (max-width: 560px) {
  .header-search { flex-basis: 100%; }
  .unit-card { padding: 18px 20px; }
  .unit-text b { font-size: 2.6rem; }
  .loop { gap: 4px; }
  .loop li { min-width: 52px; font-size: .8rem; }
  .loop .ico-lg { width: 32px; height: 32px; }
  .frame-box { min-height: 520px; }
  .fb-btn, .btn-dir { padding: 8px 8px; font-size: .88rem; gap: 6px; white-space: nowrap; }
  .fb-btn .ico, .btn-dir .ico { width: 20px; height: 20px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }
[hidden] { display: none !important; }

/* 会話風の検索 */
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.ask-hero { display: flex; align-items: flex-end; justify-content: center; gap: 10px; margin: 0 auto 16px; max-width: 620px; }
.ask-hero h1.bubble { font-size: 1.35rem; line-height: 1.45; margin: 0; text-align: left; }
.ask-hero h1 .muted { font-size: .95rem; font-weight: 400; }
.pinto { flex: none; }
.ask-btn { flex: none; border: 0; border-radius: 999px; background: var(--green); color: #fff; font: inherit; font-weight: 700; padding: 8px 18px; cursor: pointer; min-height: 40px; }
.ask-btn:hover { background: var(--green-dark); }
.big-search { padding-right: 6px; }
.chat { max-width: 760px; margin: 18px auto; display: grid; gap: 12px; }
.bubble-row { display: flex; align-items: flex-end; gap: 10px; }
.bubble-row.me { justify-content: flex-end; }
.bubble { position: relative; margin: 0; padding: 12px 16px; border-radius: 18px; max-width: min(560px, 82%); }
.bubble p { margin: 0; }
.bubble p + p { margin-top: 4px; }
.bubble.me { background: var(--green); color: #fff; border-bottom-right-radius: 6px; font-weight: 600; overflow-wrap: anywhere; }
.bubble.pinto { background: var(--surface); border: 1.5px solid var(--line); border-bottom-left-radius: 6px; }
.choices { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.choice { display: inline-flex; align-items: center; min-height: 40px; padding: 6px 16px; border-radius: 999px; border: 1.5px solid var(--green); color: var(--green-dark); text-decoration: none; font-size: .92rem; background: var(--surface); }
.choice:hover { background: var(--green-soft); }
.choice.on { background: var(--green); color: #fff; }
.chat-cards { max-width: 760px; margin-left: auto; margin-right: auto; }
.ask-more { display: flex; align-items: center; gap: 8px; max-width: 760px; margin: 22px auto 8px; padding: 4px 4px 4px 18px; background: var(--surface); border: 1.5px solid var(--line-strong); border-radius: 999px; }
.ask-more:focus-within { border-color: var(--green); box-shadow: 0 0 0 4px var(--green-soft); }
.ask-more input { flex: 1; min-width: 0; border: 0; outline: none; background: transparent; font: inherit; padding: 10px 0; }
.ask-more button { flex: none; width: 44px; height: 44px; border-radius: 50%; border: 0; background: var(--green); color: #fff; display: grid; place-items: center; cursor: pointer; }
@media (prefers-reduced-motion: no-preference) {
  .bubble-row.pinto { animation: bubblein .35s ease-out both; }
  .chat .bubble-row.pinto:nth-child(2) { animation-delay: .12s; }
}
@keyframes bubblein { from { opacity: 0; transform: translateY(6px); } }
@media (max-width: 520px) {
  .ask-hero h1.bubble { font-size: 1.1rem; }
  .bubble { max-width: 86%; }
  .big-search input { font-size: 1rem; }
}

/* 単元の解説 */
.explainer-card { display: flex; align-items: center; gap: 14px; margin: 16px 0 6px; padding: 14px 18px; background: var(--surface); border: 1.5px solid var(--green); border-radius: var(--radius); color: var(--text); text-decoration: none; }
.explainer-card:hover { background: var(--green-soft); }
.explainer-mark { flex: none; width: 48px; height: 48px; border-radius: 50%; background: var(--green-soft); color: var(--green-dark); display: grid; place-items: center; }
.explainer-body { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.explainer-kicker { font-size: .8rem; color: var(--green-dark); font-weight: 700; }

/* ---- 質問ページ（/q）---- */
.qa { max-width: 760px; margin: 0 auto; }
.qa-kicker { margin: 8px 0 0; font-size: .85rem; color: var(--green-dark); font-weight: 700; }
.qa-title { font-size: 1.55rem; line-height: 1.45; margin: 4px 0 14px; text-wrap: balance; }
.qa-answer { display: flex; gap: 12px; align-items: flex-start; background: var(--surface); border: 1.5px solid var(--line); border-radius: var(--radius); padding: 16px; }
.qa-answer > div { min-width: 0; }
.qa-label { margin: 0 0 2px; font-size: .78rem; font-weight: 700; color: var(--muted); letter-spacing: .1em; }
.qa-lead { margin: 0; font-size: 1.05rem; line-height: 1.8; font-weight: 500; }
.qa-points { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 6px; }
.qa-points li { display: flex; gap: 6px; align-items: flex-start; font-size: .95rem; }
.qa-points .ico { color: var(--green); margin-top: 4px; }
.qa-h { display: flex; align-items: center; gap: 8px; font-size: 1.15rem; margin: 30px 0 10px; }
.qa-h.small { font-size: 1rem; margin-top: 18px; }
.qa-h .ico { color: var(--green); }
.qa-play { margin-top: 8px; }
.qa-play-head { display: flex; gap: 10px; align-items: center; margin: 0 0 8px; }
.qa-play-head b { flex: none; }
.qa-play-head .muted { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.qa-steps { list-style: none; counter-reset: st; padding: 0; margin: 0; display: grid; gap: 10px; }
.qa-steps li { counter-increment: st; position: relative; padding: 12px 14px 12px 52px; background: var(--surface); border-radius: 12px; border: 1px solid var(--line); }
.qa-steps li::before { content: counter(st); position: absolute; left: 14px; top: 12px; width: 26px; height: 26px; border-radius: 50%; background: var(--green); color: #fff; font: 600 .9rem/26px var(--font-latin); text-align: center; }
.qa-steps p { margin: 2px 0 0; }
.qa-example { background: var(--surface); border: 1.5px dashed var(--line-strong); border-radius: 12px; padding: 12px 14px; }
.qa-example p { margin: 0 0 8px; }
.qa-example summary { cursor: pointer; color: var(--green-dark); font-weight: 700; }
.qa-sol { margin-top: 8px !important; }
.qa-mistake { border-left: 4px solid var(--orange); background: var(--surface); border-radius: 0 10px 10px 0; padding: 10px 14px; margin-bottom: 8px; }
.qa-mistake p { margin: 0; }
.qa-wrong { font-weight: 700; margin-bottom: 4px !important; }
.qa-parents { background: var(--panel); border-radius: 12px; padding: 2px 16px 10px; }
.qa-parents .qa-h { margin-top: 14px; }
.qa-list { list-style: none; padding: 0; margin: 0 0 8px; display: grid; gap: 6px; }
.qa-list a { display: block; padding: 10px 14px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; text-decoration: none; color: var(--text); }
.qa-list a:hover { border-color: var(--green); }
.qa-list a::before { content: "Q"; font: 600 .85rem var(--font-latin); color: var(--green); margin-right: 8px; }
.qa-meta { margin-top: 28px; }
.qa-sec { margin-top: 8px; }
.unit-qa { margin-top: 28px; }
.goal-under { margin: -4px 0 8px; }
.site-links { display: flex; flex-wrap: wrap; gap: 8px 18px; justify-content: center; padding-top: 28px; padding-bottom: 28px; font-size: .9rem; }
@media (min-width: 720px) { .qa-title { font-size: 1.8rem; } }
.home-qa { max-width: 760px; margin: 8px auto 0; }
/* 作品ページの「文字で解説」 */
.text-explain { margin-top: 18px; }
.te-learn { margin: 0 0 12px; }
.te-item { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; margin-bottom: 10px; }
.te-q { display: flex; gap: 8px; align-items: baseline; font-size: 1.02rem; margin: 0 0 6px; line-height: 1.5; }
.te-mark { font: 600 .9rem var(--font-latin); color: var(--green); flex: none; }
.te-lead { margin: 0; }
.te-more { margin: 10px 0 0; font-size: .9rem; }
.te-sub { margin: 14px 0 6px; }
.goal-qa { margin-top: 10px; }
.goal-qa a { padding: 8px 12px; font-size: .92rem; }
/* 質問カード */
.q-cards { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
@media (min-width: 720px) { .q-cards { grid-template-columns: 1fr 1fr; } }
.q-card { display: flex; align-items: center; gap: 10px; height: 100%; padding: 14px 16px; background: var(--surface); border: 1.5px solid var(--line); border-radius: 12px; text-decoration: none; color: var(--text); transition: border-color .15s; }
.q-card:hover { border-color: var(--green); }
.q-card { align-items: baseline; }
.q-title { flex: 1; min-width: 0; font-weight: 700; line-height: 1.5; }
.q-title small { display: block; font-weight: 400; font-size: .78rem; color: var(--muted); margin-top: 2px; }
.q-meta { flex: none; display: flex; flex-direction: column; align-items: flex-end; gap: 2px; font-size: .78rem; }
.q-ways { display: inline-flex; align-items: center; gap: 3px; color: var(--green-dark); font: 600 .85rem var(--font-latin); }
.chat-cards.q-cards { margin-top: 12px; }
/* 質問ページ：見せ方の切り替え */
.ways { display: flex; gap: 6px; overflow-x: auto; padding: 2px 0 10px; scrollbar-width: none; }
.ways::-webkit-scrollbar { display: none; }
.way { flex: none; display: inline-flex; align-items: center; gap: 4px; padding: 6px 12px; border-radius: 999px; border: 1.5px solid var(--line); background: var(--surface); color: var(--text); text-decoration: none; font-size: .88rem; }
.way.on { background: var(--green); border-color: var(--green); color: #fff; }
.way.seen:not(.on) { color: var(--muted); }
/* お問い合わせ・文書ページ */
.contact-form { max-width: 640px; display: grid; gap: 14px; }
.contact-form label { display: grid; gap: 4px; font-weight: 700; font-size: .92rem; }
.contact-form input:not([type=radio]), .contact-form textarea { font: inherit; font-weight: 400; padding: 10px 12px; border: 1.5px solid var(--line); border-radius: 10px; background: var(--surface); }
.contact-form .cf-cats { border: 0; padding: 0; margin: 0; display: grid; gap: 6px; }
.contact-form .cf-cats legend { font-weight: 700; font-size: .92rem; margin-bottom: 4px; }
.contact-form .cf-cats .radio { font-weight: 400; display: flex; gap: 6px; }
.contact-form .btn { justify-self: start; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.notice.err { background: var(--orange-soft); }
.doc { max-width: 760px; }
.doc h2 { font-size: 1.1rem; margin: 26px 0 8px; }
.doc li { margin-bottom: 6px; }
/* トップの動き */
.examples .chip { transition: opacity .4s, transform .4s; }
.examples .chip.out { opacity: 0; transform: translateY(4px); }
.live-stats { text-align: center; font-size: .85rem; margin: 10px 0 0; display: flex; justify-content: center; align-items: center; gap: 4px; flex-wrap: wrap; }
.live-stats b { font-family: var(--font-latin); color: var(--green-dark); }
.live-stats .live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--orange); display: inline-block; margin-right: 4px; animation: pkpulse 1.8s ease-in-out infinite; }
@keyframes pkpulse { 50% { opacity: .3; transform: scale(.8); } }
.q-li { position: relative; list-style: none; }
.q-li .q-card { padding-right: 70px; }
.q-ask { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); display: inline-flex; align-items: center; gap: 3px; font: inherit; font-size: .8rem; color: var(--green-dark); background: var(--green-soft); border: 0; border-radius: 999px; padding: 6px 10px; cursor: pointer; }
.q-ask:hover { background: var(--green); color: #fff; }
.q-li.fresh .q-card { animation: pkfresh 1.6s ease-out; }
@keyframes pkfresh { from { border-color: var(--orange); background: var(--orange-soft); } }
@media (prefers-reduced-motion: reduce) { .live-stats .live-dot, .q-li.fresh .q-card { animation: none; } }
.grade-label a { color: inherit; text-decoration: none; }
/* シェア */
.share { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 28px 0 0; padding: 14px 16px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; }
.share-label { font-weight: 700; font-size: .9rem; margin-right: 4px; flex-basis: 100%; }
@media (min-width: 720px) { .share-label { flex-basis: auto; } }
.share-btn { font: inherit; font-size: .88rem; padding: 7px 14px; border-radius: 999px; border: 1.5px solid var(--line); background: var(--bg); color: var(--text); text-decoration: none; cursor: pointer; }
.share-btn:hover { border-color: var(--green); color: var(--green-dark); }
.share-btn[data-sns="line"] { background: #06c755; border-color: #06c755; color: #fff; }
.share-native { background: var(--green); border-color: var(--green); color: #fff; }