/* ============================================================
   sho eigo · 子ども向け 社会テーマ学習（無料・登録不要）
   共有スタイル。/learn/themes/ の 3 ページ（index / theme / english）が読む。
   ブランドトークンは explainers/explainer.css・CLAUDE.md §1 の canonical。
   ============================================================ */
:root{
  --navy:#13234a; --navy-deep:#0c1a39; --navy-soft:#2a3d6b;
  --gold:#b89455; --gold-rich:#9a7a3e; --gold-soft:#d9b97a; --gold-pale:#ebd99e;
  --bg:#f6f2e9; --bg-soft:#f9f5ee; --paper:#fff;
  --ink:#1a1814; --ink-soft:#5a554c; --ink-mute:#8b8275;
  --line:#e2dccd; --line-soft:#ece6d7;
  --ok:#3a7a4a; --ok-soft:#e7f1e9;
  --shadow-sm:0 1px 3px rgba(15,24,57,.05);
  --shadow:0 8px 28px rgba(15,24,57,.08),0 2px 6px rgba(15,24,57,.04);
  --shadow-hover:0 16px 42px rgba(15,24,57,.12),0 4px 10px rgba(15,24,57,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Shippori Mincho','Noto Sans JP',sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.95;letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
}
ruby rt{font-size:.55em;color:var(--ink-mute);font-weight:400}
b{color:var(--gold-rich)}
.wrap{max-width:680px;margin:0 auto;padding:0 18px}

/* ---- ヘッダ ---- */
.lhead{background:rgba(246,242,233,.92);backdrop-filter:saturate(180%) blur(10px);
  -webkit-backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:50}
.lhead-in{max-width:680px;margin:0 auto;padding:12px 18px;display:flex;align-items:center;gap:14px}
.lbrand{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink)}
.lbrand-mark{width:30px;height:30px;border-radius:50%;background:var(--navy);color:var(--gold-soft);
  display:flex;align-items:center;justify-content:center;
  font-family:'Cormorant Garamond',serif;font-size:17px;font-weight:600;font-style:italic}
.lbrand-name{font-family:'Cormorant Garamond',serif;font-style:italic;font-size:19px;font-weight:600}
.lhead-due{margin-left:auto;text-decoration:none;background:var(--gold);color:#fff;
  padding:6px 14px;border-radius:99px;font-family:'Noto Sans JP',sans-serif;font-size:12px;font-weight:600;
  display:none}
.lhead-due.on{display:inline-block}

/* ---- ヒーロー ---- */
.lhero{padding:46px 18px 30px;text-align:center}
.lhero .eyebrow{font-family:'Cormorant Garamond',serif;font-style:italic;font-size:13px;
  letter-spacing:.3em;color:var(--gold-rich);text-transform:uppercase;margin-bottom:14px}
.lhero h1{font-family:'Shippori Mincho',serif;font-size:clamp(24px,5.5vw,34px);font-weight:700;
  line-height:1.45;color:var(--ink);margin-bottom:14px}
.lhero h1 .accent{color:var(--navy);position:relative;display:inline-block}
.lhero h1 .accent::after{content:'';position:absolute;left:0;right:0;bottom:-5px;height:3px;
  background:var(--gold);border-radius:2px}
.lhero p{font-family:'Noto Sans JP',sans-serif;font-weight:400;font-size:14px;color:var(--ink-soft);line-height:2}
.lhero .deco{width:40px;height:1px;background:var(--gold);margin:18px auto}

/* ---- テーマカード（index） ---- */
.theme-grid{display:grid;grid-template-columns:1fr;gap:14px;padding:8px 0 30px}
@media(min-width:560px){.theme-grid{grid-template-columns:1fr 1fr}}
.theme-card{background:var(--paper);border:1px solid var(--line);border-left:3px solid var(--gold);
  border-radius:8px;padding:18px 18px 16px;text-decoration:none;color:var(--ink);
  transition:transform .2s,box-shadow .2s,border-color .2s;display:block;position:relative}
.theme-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-left-color:var(--navy)}
.theme-card .emoji{font-size:30px;line-height:1;margin-bottom:8px}
.theme-card .t{font-family:'Shippori Mincho',serif;font-size:16px;font-weight:700;color:var(--navy);margin-bottom:5px}
.theme-card .d{font-family:'Noto Sans JP',sans-serif;font-size:12px;color:var(--ink-soft);line-height:1.8}
.theme-card .age{display:inline-block;margin-top:9px;font-family:'JetBrains Mono',monospace;font-size:9px;
  letter-spacing:.12em;color:var(--ink-mute);border:1px solid var(--line);border-radius:99px;padding:2px 8px}
.theme-card .due-badge{position:absolute;top:14px;right:14px;background:var(--gold);color:#fff;
  font-family:'Noto Sans JP',sans-serif;font-size:11px;font-weight:600;border-radius:99px;padding:3px 10px;display:none}
.theme-card .due-badge.on{display:inline-block}

/* ---- ステップタブ（theme/english 共通） ---- */
.steps{display:flex;gap:6px;justify-content:center;padding:14px 0 6px;flex-wrap:wrap}
.step-pill{font-family:'Noto Sans JP',sans-serif;font-size:11px;font-weight:600;color:var(--ink-mute);
  border:1px solid var(--line);border-radius:99px;padding:5px 12px;background:var(--paper);cursor:pointer;transition:all .15s}
.step-pill.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.step-pill.done{color:var(--ok);border-color:var(--ok)}

/* ---- スライド ---- */
.slide-stage{background:linear-gradient(160deg,var(--navy-deep),var(--navy));border-radius:14px;
  padding:34px 22px 26px;color:var(--bg);min-height:330px;position:relative;overflow:hidden;margin-top:8px}
.slide-stage::before{content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 78% 18%,rgba(184,148,85,.14),transparent 46%);pointer-events:none}
.slide-card{position:relative;z-index:1;text-align:center}
.slide-card .eyebrow{font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:.28em;
  color:var(--gold-soft);text-transform:uppercase;margin-bottom:14px}
.slide-card h2{font-family:'Shippori Mincho',serif;font-size:clamp(20px,5vw,27px);font-weight:700;
  line-height:1.55;color:#fff;margin-bottom:14px}
.slide-card h2 b{color:var(--gold-soft)}
.slide-card .body{font-family:'Noto Sans JP',sans-serif;font-size:15px;line-height:2;color:rgba(255,255,255,.9);
  max-width:460px;margin:0 auto}
.slide-diagram{margin:18px auto 0;max-width:380px}
.diagram-stat{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:10px;padding:16px}
.diagram-stat .v{font-family:'Shippori Mincho',serif;font-size:30px;font-weight:700;color:var(--gold-soft);line-height:1.1}
.diagram-stat .l{font-family:'Noto Sans JP',sans-serif;font-size:12px;color:rgba(255,255,255,.78);margin-top:6px}
.diagram-compare{display:flex;gap:10px}
.diagram-compare .c{flex:1;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:10px;padding:12px;font-family:'Noto Sans JP',sans-serif;font-size:13px;color:#fff}
.diagram-compare .c .h{font-size:11px;color:var(--gold-soft);margin-bottom:5px}

/* ---- 操作バー ---- */
.controls{display:flex;align-items:center;justify-content:center;gap:10px;padding:16px 0 4px}
.ctrl{width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:var(--paper);
  color:var(--navy);font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:all .15s}
.ctrl:hover{border-color:var(--gold);color:var(--gold-rich)}
.ctrl:disabled{opacity:.35;cursor:not-allowed}
.ctrl.play{background:var(--gold);color:#fff;border-color:var(--gold);width:54px;height:54px;font-size:20px}
.ctrl.auto{width:auto;height:46px;border-radius:99px;padding:0 16px;font-size:13px;font-weight:700;
  font-family:'Noto Sans JP',sans-serif;gap:4px;letter-spacing:.04em;white-space:nowrap}
.ctrl.auto.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.ctrl.auto.on:hover{color:#fff}
.ctrl-count{font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--ink-mute);min-width:46px;text-align:center}
.progress{height:4px;background:var(--line-soft);border-radius:2px;overflow:hidden;margin-top:14px}
.progress-fill{height:100%;background:var(--gold);width:0;transition:width .3s}

/* ---- sho 先生 吹き出し ---- */
.sho-bubble{display:flex;gap:.7rem;align-items:flex-start;margin:18px 0}
.sho-avatar{width:50px;height:50px;flex-shrink:0;border-radius:50%;
  background-image:url('/trial/sho_calm.png');background-size:140%;background-position:50% 12%;
  border:3px solid #fff;box-shadow:0 2px 8px rgba(184,148,85,.4)}
.sho-avatar.mood-joy{background-image:url('/trial/sho_joy.png')}
.sho-avatar.mood-fun{background-image:url('/trial/sho_fun.png')}
.sho-avatar.mood-wow{background-image:url('/trial/sho_wow.png')}
.sho-avatar.mood-think{background-image:url('/trial/sho_think.png')}
.sho-avatar.mood-smile{background-image:url('/trial/sho_smile.png')}
.sho-bubble-body{flex:1;background:#fff;border:1px solid var(--line);padding:.85rem 1rem;border-radius:12px;
  font-family:'Noto Sans JP',sans-serif;font-size:.9rem;line-height:1.85;color:var(--ink-soft);
  box-shadow:var(--shadow-sm);position:relative}
.sho-bubble-body::before{content:'';position:absolute;left:-8px;top:16px;border:8px solid transparent;border-right-color:#fff}
.sho-bubble-body::after{content:'';position:absolute;left:-10px;top:15px;border:9px solid transparent;border-right-color:var(--line);z-index:-1}
.sho-bubble-body .name{font-family:'Noto Sans JP',sans-serif;font-weight:700;color:var(--navy);font-size:.78rem;margin-bottom:.15rem}

/* ---- ストーリー ---- */
.story-page{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:28px 22px;
  font-family:'Noto Sans JP',sans-serif;font-size:16px;line-height:2.1;color:var(--ink);text-align:center;min-height:170px;
  display:flex;align-items:center;justify-content:center}
.story-title{font-family:'Shippori Mincho',serif;font-size:18px;font-weight:700;color:var(--navy);text-align:center;margin:8px 0 12px}

/* ---- クイズ ---- */
.quiz-q{font-family:'Noto Sans JP',sans-serif;font-size:16px;font-weight:600;color:var(--navy);text-align:center;margin:18px 0 14px}
.quiz-choices{display:flex;flex-direction:column;gap:10px;max-width:420px;margin:0 auto}
.quiz-choice{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:13px 16px;
  font-family:'Noto Sans JP',sans-serif;font-size:14px;color:var(--ink);cursor:pointer;text-align:left;transition:all .15s}
.quiz-choice:hover{border-color:var(--gold)}
.quiz-choice.correct{background:var(--ok-soft);border-color:var(--ok);color:var(--ok);font-weight:600}
.quiz-choice.wrong{background:#fbeaea;border-color:#c98a8a;color:#9d2c2c}
.quiz-choice:disabled{cursor:default}
.quiz-explain{background:var(--bg-soft);border:1px solid var(--line);border-left:3px solid var(--gold);
  border-radius:8px;padding:14px 16px;margin-top:14px;font-family:'Noto Sans JP',sans-serif;font-size:13px;
  color:var(--ink-soft);line-height:1.9;display:none}
.quiz-explain.on{display:block}

/* ---- SRS 復習カード ---- */
.srs-intro{background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:18px 20px;
  font-family:'Noto Sans JP',sans-serif;font-size:13.5px;color:var(--ink-soft);line-height:1.95;text-align:center}
.srs-intro b{color:var(--gold-rich)}
.srs-card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:30px 22px;text-align:center;
  box-shadow:var(--shadow-sm)}
.srs-term{font-family:'Shippori Mincho',serif;font-size:26px;font-weight:700;color:var(--navy);margin-bottom:6px}
.srs-reveal{font-family:'Noto Sans JP',sans-serif;font-size:14px;color:var(--ink-soft);line-height:1.95;
  max-width:420px;margin:14px auto 0;display:none}
.srs-reveal.on{display:block}
.srs-reveal .hint{display:block;margin-top:8px;font-size:12px;color:var(--ink-mute)}
.srs-actions{display:flex;gap:10px;justify-content:center;margin-top:20px;flex-wrap:wrap}
.srs-btn{font-family:'Noto Sans JP',sans-serif;font-size:13px;font-weight:600;border-radius:99px;padding:11px 18px;
  cursor:pointer;border:1px solid var(--line);background:var(--paper);color:var(--ink);transition:all .15s}
.srs-btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm)}
.srs-btn.again{color:#9d2c2c;border-color:#d3a3a3}
.srs-btn.good{color:#fff;background:var(--navy);border-color:var(--navy)}
.srs-btn.easy{color:#fff;background:var(--gold);border-color:var(--gold)}
.srs-reveal-btn{font-family:'Noto Sans JP',sans-serif;font-size:13px;font-weight:600;border-radius:99px;
  padding:11px 22px;cursor:pointer;border:1px solid var(--navy);background:#fff;color:var(--navy);margin-top:20px}

/* ---- 英語体験 ---- */
.level-pick{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin:8px 0 4px}
.level-btn{font-family:'Noto Sans JP',sans-serif;font-size:12px;font-weight:600;border-radius:99px;padding:8px 16px;
  cursor:pointer;border:1px solid var(--line);background:var(--paper);color:var(--ink-soft)}
.level-btn.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.en-lines{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:22px;text-align:center;margin:8px 0}
.en-line{font-family:'Cormorant Garamond','Noto Sans JP',serif;font-size:22px;color:var(--navy);line-height:1.6;margin:4px 0}
.glosses{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:14px}
.gloss{font-family:'Noto Sans JP',sans-serif;font-size:12px;border:1px solid var(--line);border-radius:99px;
  padding:5px 12px;background:var(--bg-soft);color:var(--ink-soft);cursor:pointer}
.gloss .ja{display:none;color:var(--gold-rich);font-weight:600}
.gloss.show .ja{display:inline;margin-left:6px}
.rec-row{display:flex;gap:12px;justify-content:center;align-items:center;margin:16px 0}
.rec-btn{font-family:'Noto Sans JP',sans-serif;font-size:14px;font-weight:600;border-radius:99px;padding:13px 24px;
  cursor:pointer;border:none;background:var(--gold);color:#fff;box-shadow:0 4px 14px rgba(184,148,85,.35);transition:all .2s}
.rec-btn:hover{background:var(--gold-rich);transform:translateY(-1px)}
.rec-btn.recording{background:#c0392b;animation:pulse 1.1s infinite}
.rec-btn:disabled{opacity:.4;cursor:not-allowed;box-shadow:none;transform:none}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(192,57,43,.5)}50%{box-shadow:0 0 0 10px rgba(192,57,43,0)}}
.listen-card{display:flex;gap:12px;margin:10px 0}
.listen-card .player{flex:1;background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:16px;text-align:center}
.listen-card .player.empty{opacity:.45}
.player-play{width:46px;height:46px;border-radius:50%;border:none;background:var(--navy);color:var(--gold-soft);
  font-size:17px;cursor:pointer;margin-bottom:8px}
.player-play:disabled{opacity:.4;cursor:not-allowed}
.player .lab{font-family:'Noto Sans JP',sans-serif;font-weight:700;color:var(--navy);font-size:13px}
.player .sub{font-family:'Noto Sans JP',sans-serif;font-size:11px;color:var(--ink-mute);margin-top:2px}

/* ---- CTA / 汎用ボタン ---- */
.cta-btn{display:block;width:100%;max-width:360px;margin:18px auto 4px;padding:15px 16px;text-align:center;
  text-decoration:none;font-family:'Noto Sans JP',sans-serif;font-size:15px;font-weight:600;border-radius:8px;
  background:var(--gold);color:#fff;box-shadow:0 4px 14px rgba(184,148,85,.35);transition:all .2s}
.cta-btn:hover{background:var(--gold-rich);transform:translateY(-1px)}
.cta-btn.navy{background:var(--navy)}
.cta-btn.navy:hover{background:var(--navy-deep)}
.cta-sub{text-align:center;font-family:'Noto Sans JP',sans-serif;font-size:12px;color:var(--ink-mute);margin-top:8px}
.notice{background:var(--bg-soft);border:1px solid var(--line);border-radius:8px;padding:12px 16px;
  font-family:'Noto Sans JP',sans-serif;font-size:12.5px;color:var(--ink-soft);line-height:1.85;text-align:center;margin:14px 0}

/* ---- セクション表示制御 ---- */
.panel{display:none}
.panel.active{display:block;animation:fade .3s ease-out}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}

.lfoot{text-align:center;padding:34px 18px 48px;font-family:'JetBrains Mono',monospace;font-size:10px;
  color:var(--ink-mute);letter-spacing:.2em}
.lfoot a{color:var(--gold-rich);text-decoration:none}