:root{
  --sand:#f4e1bb;--sand-deep:#d7b77a;--paper:#fffaf0;--paper-2:#fff5df;
  --ink:#3f3428;--sub:#88755f;--line:#dec9a5;--teal:#168f86;--teal-dark:#0e6e68;
  --orange:#ef792f;--orange-dark:#c9551f;--gold:#f5b82e;--soil:#765133;
  --done:#ffebad;--danger:#cf655a;--pad:env(safe-area-inset-bottom, 0px);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%;overflow:hidden}
body{margin:0;color:var(--ink);background:#e9c98c;font-family:"Hiragino Maru Gothic ProN","ヒラギノ丸ゴ ProN","Yu Gothic UI","Meiryo",system-ui,sans-serif;overscroll-behavior:none;-webkit-user-select:none;user-select:none;touch-action:manipulation}
body::before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.22;background:radial-gradient(circle at 18% 12%,#fff 0 1px,transparent 2px),radial-gradient(circle at 78% 68%,#7d572d 0 1px,transparent 2px);background-size:27px 31px,37px 43px}
button{font:inherit}

/* screens */
.screen{position:fixed;inset:0;display:none;flex-direction:column;width:100%;max-width:720px;margin:auto;padding:0 12px calc(8px + var(--pad));background:linear-gradient(180deg,#f8e9cb 0%,#f4dfb5 100%);overflow:hidden}
.screen.is-on{display:flex}
.topbar{display:flex;align-items:center;gap:9px;min-height:64px;padding:8px 1px 6px}
.logo{margin:0;flex:1;color:var(--ink);font-size:19px;line-height:1.1;letter-spacing:.02em}
.mini{border:1px solid rgba(124,87,47,.08);background:var(--paper);color:var(--ink);border-radius:15px;padding:10px 13px;min-width:44px;min-height:44px;box-shadow:0 3px 0 rgba(112,79,46,.14);cursor:pointer;white-space:nowrap}
.mini:active,.btn:active,.nav-btn:active,.start:active,.cell:active{transform:translateY(3px);box-shadow:none}
.mini.icon{font-size:17px;padding:9px 12px}.mini.back{font-size:22px;padding:8px 12px}

/* brand */
.home-topbar{min-height:72px}.brand{flex:1;min-width:0;line-height:1}.brand-owner{display:block;margin:0 0 1px 2px;color:var(--teal-dark);font-size:10px;font-weight:800;letter-spacing:.14em}
.brand .logo{font-size:clamp(16px,4.8vw,21px);white-space:normal}.brand .logo span{color:var(--orange);margin-right:.15em}
.brand-logo{display:flex;align-items:center;margin:0}.brand-logo img{display:block;height:clamp(46px,17.5vw,70px);width:auto;max-width:100%;object-fit:contain;filter:drop-shadow(0 2px 0 rgba(94,63,30,.16))}

/* ホームの背景。地層と小石はカードの後ろに退かせ、文字の読みやすさを守る */
#screen-home{position:fixed;background:
  radial-gradient(ellipse at 4% 39%,rgba(139,99,58,.15) 0 3px,transparent 4px),
  radial-gradient(ellipse at 96% 77%,rgba(139,99,58,.12) 0 5px,transparent 6px),
  linear-gradient(180deg,#f8e9cb 0%,#f3dfba 100%)}
#screen-home::before,#screen-home::after{content:"";position:absolute;inset:0;pointer-events:none}
#screen-home::before{opacity:.5;background:repeating-linear-gradient(173deg,transparent 0 82px,rgba(151,108,64,.055) 83px 85px,transparent 86px 166px)}
#screen-home::after{opacity:.28;background:
  radial-gradient(ellipse at 6% 66%,#a47a4d 0 8px,transparent 9px),
  radial-gradient(ellipse at 93% 48%,#a47a4d 0 6px,transparent 7px),
  radial-gradient(ellipse at 89% 91%,#a47a4d 0 10px,transparent 11px),
  radial-gradient(circle at 9% 91%,#c49b63 0 3px,transparent 4px)}
#screen-home>.home-topbar,#screen-home>.mission-card,#screen-home>.home-nav,#screen-home>.home-stars,#screen-home>.credit{position:relative;z-index:1}

/* mission */
.mission-card{position:relative;flex:1 1 auto;align-content:center;display:grid;grid-template-columns:minmax(0,1fr) 118px;gap:6px;padding:18px 15px 15px;border:2px solid rgba(91,62,33,.2);border-radius:26px;background:var(--paper);box-shadow:0 5px 0 rgba(111,76,40,.2);overflow:hidden}
.mission-card::before{content:"";position:absolute;inset:auto -20px -28px -20px;height:62px;border-radius:50% 50% 0 0;background:#ad7746;opacity:.16}
.mission-copy{position:relative;z-index:1;min-width:0}.eyebrow{display:block;color:var(--teal-dark);font-size:10px;font-weight:900;letter-spacing:.08em}
.mission-copy h2{margin:5px 0 5px;font-size:clamp(18px,5.1vw,23px);line-height:1.28}.mission-copy h2 strong{color:var(--orange);font-weight:900}.mission-status{margin:0;color:var(--sub);font-size:11px;font-weight:700}
.dig-mark{position:relative;min-height:96px}
/* 土の山をやめた。Dr.よこぼの あごが山に埋まって、顔だけ置いてあるように見えていた。
   なぞる画面の相棒と同じ「うすい影」にそろえる */
.dig-doc{position:absolute;left:50%;bottom:0;z-index:2;width:clamp(122px,38vw,158px);height:auto;transform:translateX(-50%);filter:drop-shadow(0 4px 0 rgba(74,49,27,.14))}
.dig-soil{display:none}
.start{position:relative;z-index:2;grid-column:1/-1;display:flex;align-items:center;justify-content:center;gap:2px;flex-direction:column;border:0;border-radius:20px;padding:14px 12px;margin-top:12px;min-height:64px;background:var(--orange);color:#fff;cursor:pointer;box-shadow:0 4px 0 var(--orange-dark)}
.start-main{font-size:20px;font-weight:900;letter-spacing:.03em}.start-main b{display:inline-block;margin-left:8px;font-size:23px}
/* 説明はボタンの外へ。ボタンの中に小さい字を入れると、押す場所の主役がぼやける */
.start-sub{grid-column:1/-1;margin:7px 2px 0;color:var(--sub);font-size:11px;font-weight:800;text-align:center}

/* practice */
.practice-book{min-height:0;flex:1;display:flex;flex-direction:column;margin-top:10px;padding:10px 9px 8px;border:1px solid rgba(102,72,43,.12);border-radius:23px 23px 10px 10px;background:rgba(255,250,240,.9);box-shadow:0 3px 0 rgba(111,76,40,.14)}
.practice-head{display:flex;align-items:flex-end;gap:8px;padding:0 4px 7px}.practice-head>div{flex:1}.practice-head h2{margin:1px 0 0;font-size:15px}.progress{margin:0;color:var(--sub);font-size:11px;font-weight:800;white-space:nowrap}
.seg{display:flex;gap:4px;padding:3px;margin-bottom:7px;border-radius:13px;background:#eadabd}.seg-btn{flex:1;border:0;border-radius:10px;min-height:38px;padding:8px 4px;background:transparent;color:var(--sub);font-size:13px;font-weight:800;cursor:pointer}.seg-btn.is-on{background:var(--teal);color:#fff;box-shadow:0 2px 0 var(--teal-dark)}
.tabs{display:flex;gap:5px;padding:0 0 8px}.tab{flex:1;border:1px solid var(--line);border-radius:12px;min-height:40px;padding:8px 3px;background:#fff;color:var(--sub);font-size:12px;font-weight:800;cursor:pointer;box-shadow:0 2px 0 #e2cfac}.tab.is-on{border-color:var(--orange);background:#fff0db;color:var(--orange-dark);box-shadow:0 2px 0 #e6aa74}
.grid{min-height:0;flex:1;overflow-y:auto;display:grid;grid-template-columns:repeat(5,1fr);align-content:start;gap:7px;padding:1px 2px 6px;scrollbar-color:#b99b70 transparent}
.cell{position:relative;aspect-ratio:1/1;border:1px solid rgba(117,83,48,.08);border-radius:15px;background:#fffdf8;color:var(--ink);font-size:clamp(22px,7vw,34px);display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 3px 0 #eadcc4}
.cell.blank{background:transparent;border:0;box-shadow:none;pointer-events:none}.cell.done{background:#fff0c3;border-color:#ebc76f;box-shadow:0 3px 0 #dfbd65}.cell.done::after{content:attr(data-stars);position:absolute;top:3px;right:4px;color:#db8d16;font-size:8px;letter-spacing:-1px}
.credit{margin:2px 0 0;color:var(--sub);font-size:8px;text-align:center;opacity:.7}.credit a{color:inherit}

/* nav */
.nav{display:flex;padding:8px 0 1px}.nav-btn{flex:1;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;border:1px solid rgba(72,54,35,.08);border-radius:18px;padding:10px 14px;min-height:58px;background:var(--teal);color:#fff;cursor:pointer;text-align:left;box-shadow:0 4px 0 var(--teal-dark)}
.nav-btn span:nth-child(2){display:flex;flex-direction:column}.nav-btn b{font-size:15px}.nav-btn small{font-size:9px;opacity:.86}.nav-icon{font-size:26px}.nav-arrow{font-size:22px;font-weight:900}

/* trace: 発掘現場の中に、読みやすい文字ボードを置く */
#screen-trace{background:radial-gradient(circle at 7% 27%,rgba(126,89,50,.11) 0 3px,transparent 4px),radial-gradient(circle at 92% 20%,rgba(126,89,50,.08) 0 4px,transparent 5px),linear-gradient(180deg,#f8e9cb 0%,#f2dcaf 100%);background-size:110px 130px,150px 170px,auto}
#screen-trace .topbar{min-height:60px}.trace-title{flex:1;min-width:0;text-align:center;line-height:1.15}.trace-title .trace-zone{display:inline-block;padding:4px 10px;margin-bottom:3px;border-radius:7px;background:#d9b878;color:#60451f;font-size:10px;font-weight:900;letter-spacing:.07em;box-shadow:inset 0 0 0 1px rgba(93,63,29,.1)}.trace-title strong{display:block;color:var(--teal-dark);font-size:10px;letter-spacing:.08em}.mini.icon small,.mini.back small{display:block;margin-top:1px;font-size:8px;font-weight:900}.word{display:flex;align-items:center;justify-content:center;gap:16px;min-height:58px;padding:2px 10px 5px}.trace-char{font-size:clamp(42px,13vw,58px);line-height:1;color:var(--ink)}.trace-example{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:6px;min-width:0;padding:7px 12px;border-radius:15px;background:rgba(255,250,240,.72);color:var(--sub)}.trace-example span{font-size:25px;line-height:1}.trace-example b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:15px;color:var(--ink)}
.sess{display:none;align-items:center;justify-content:center;gap:8px;min-height:45px;padding:5px 8px 7px;margin:0 auto;color:var(--sub);font-size:11px;border-radius:15px;background:rgba(255,250,240,.76);box-shadow:0 2px 0 rgba(111,76,40,.12)}.sess.is-on{display:flex}.sess-label{min-width:48px;color:var(--teal-dark);font-size:16px;font-weight:900;text-align:center}.sess-label small{margin-left:1px;font-size:8px}.sess .dots{font-size:13px;letter-spacing:3px;color:#cab896;white-space:nowrap}.sess .dots b{color:var(--teal)}.bone-dots{display:flex;gap:1px;white-space:nowrap}.bone-dots b,.bone-dots span{font-size:14px;letter-spacing:-3px}.bone-dots span{filter:grayscale(1) brightness(.72);opacity:.48}.sess-rep{color:var(--orange-dark);font-size:12px;font-weight:900;white-space:nowrap}.sess-rep small{display:block;margin-top:1px;color:var(--sub);font-size:7px;font-weight:800}.sess[data-mode="practice"] .sess-label{font-size:10px}.sess[data-mode="practice"] .sess-rep small{font-size:7px}
.stage{position:relative;min-height:0;flex:1;display:flex;align-items:center;justify-content:center;padding:7px 0}.stage::before,.stage::after{content:"";position:absolute;pointer-events:none;opacity:.24}.stage::before{left:0;bottom:12%;width:25px;height:15px;border-radius:50% 45% 40% 55%;background:#9a7148;transform:rotate(-12deg)}.stage::after{right:2px;top:17%;width:19px;height:12px;border-radius:40% 55% 45%;background:#b18b5d;transform:rotate(18deg)}.canvas-wrap{position:relative;line-height:0;padding:8px;border:2px solid #c9a668;border-radius:25px;background:#d9bc84;box-shadow:0 5px 0 #ad8551,0 9px 22px rgba(94,65,34,.12)}.canvas-wrap::before,.canvas-wrap::after{content:"";position:absolute;width:9px;height:9px;border-radius:50%;background:#9a7549;z-index:2}.canvas-wrap::before{left:12px;top:12px}.canvas-wrap::after{right:12px;bottom:12px}.board-label{position:absolute;left:50%;top:-10px;z-index:4;transform:translateX(-50%);padding:4px 13px;border-radius:999px;background:var(--teal);color:#fff;font-size:8px;font-weight:900;line-height:1;white-space:nowrap;box-shadow:0 2px 0 var(--teal-dark)}#canvas{display:block;border-radius:18px;background:#fffdf8;box-shadow:inset 0 0 0 1px rgba(100,70,38,.08);touch-action:none}
.praise{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none;opacity:0;transform:scale(.6);transition:opacity .18s,transform .28s cubic-bezier(.2,1.6,.4,1);z-index:5}.praise.is-on{opacity:1;transform:scale(1)}.praise.top{inset:auto 0 100%;padding-bottom:8px;align-items:flex-end}.praise span{padding:.34em .85em;border-radius:999px;background:#fff;color:var(--orange-dark);font-size:clamp(24px,8vw,43px);line-height:1.3;box-shadow:0 6px 20px rgba(100,65,30,.22);white-space:nowrap}.praise.top span{font-size:clamp(16px,5vw,24px)}.praise.top.big span{font-size:clamp(18px,5.8vw,29px)}
.controls{display:flex;gap:7px;padding:10px 0 3px}.btn{flex:1;border:0;border-radius:17px;min-height:54px;padding:13px 5px;font-size:14px;font-weight:900;cursor:pointer;box-shadow:0 3px 0 rgba(0,0,0,.14)}.btn.ghost{background:var(--paper);color:var(--sub);box-shadow:0 3px 0 var(--line)}.btn.primary{background:var(--orange);color:#fff;box-shadow:0 3px 0 var(--orange-dark)}.btn[disabled]{opacity:.45;pointer-events:none}.btn.is-hidden{display:none}
@keyframes nudge{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}.btn.primary.is-ready{animation:nudge .7s ease-in-out 3}
.bone-pop{position:absolute;left:12px;right:12px;bottom:calc(82px + var(--pad) + var(--buddy-h, 0px));z-index:8;display:flex;align-items:center;justify-content:center;gap:8px;pointer-events:none;opacity:0;transform:translateY(10px);transition:opacity .22s,transform .22s;color:var(--ink);font-size:13px}.bone-pop.is-on{opacity:1;transform:translateY(0)}.bone-pop span{padding:.45em .8em;border-radius:999px;background:#fff;box-shadow:0 3px 0 var(--line);font-weight:800}.bone-art{display:inline-flex;align-items:center;justify-content:center}.bone-art img,.bone-art canvas{display:block;width:100%;height:100%;object-fit:contain}

/* excavation book */
.nav-btn-inline{flex:0 0 auto}.book-heading{flex:1;min-width:0}.book-heading>span{display:block;color:var(--teal-dark);font-size:9px;font-weight:900;letter-spacing:.1em}.book-heading .logo{font-size:18px}.bone-total{padding:7px 10px;border-radius:999px;background:var(--soil);color:#fff;font-size:12px;font-weight:900;white-space:nowrap}
.dig-intro{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 14px;margin-bottom:9px;border-radius:17px;background:#f8e8c8;color:var(--soil);box-shadow:inset 0 0 0 1px rgba(103,73,40,.1)}.dig-intro strong{font-size:12px;line-height:1.45}.dig-intro span{font-size:34px}#dig{min-height:0;flex:1;overflow-y:auto;padding:0 2px 9px}
.page{margin-bottom:10px;padding:11px;border:1px solid rgba(103,73,40,.12);border-radius:20px;background:var(--paper);box-shadow:0 3px 0 rgba(111,76,40,.14)}.page.dino.full{background:#fff5d2;border-color:#e3bc5b;box-shadow:0 3px 0 #d8b157}.page.dino.untouched{padding:9px 12px;background:#eadbbf}.page-head{display:flex;align-items:center;gap:7px;padding:1px 2px 9px}.page-title{flex:1;margin:0;font-size:15px}.count{color:var(--sub);font-size:11px;font-weight:800}.ribbon{padding:4px 8px;border-radius:999px;background:var(--orange);color:#fff;font-size:9px;font-weight:900}
.dig-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:5px}.slot{min-height:77px;padding:4px 2px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;border-radius:12px;background:#e9dcc5;box-shadow:inset 0 2px 0 #d9c8aa}.slot.has{background:#fff;box-shadow:0 2px 0 var(--line)}.slot-label{font-size:8px;color:var(--sub);line-height:1.2;text-align:center}.slot.has .slot-label{color:var(--ink);font-weight:800}.slot-q{color:#bda987;font-size:23px;font-weight:900;line-height:1.4}.dino-full{display:flex;justify-content:center;padding:1px 0 5px}.dino-reveal-note{margin:0;padding:7px 8px;border-radius:11px;background:rgba(255,255,255,.58);color:var(--sub);font-size:10px;text-align:center}
.dino-open{width:100%;margin-top:8px;min-height:48px}
.complete-parts-wrap{margin:2px 0 7px;padding:7px 7px 6px;border-radius:13px;background:rgba(255,255,255,.6)}.complete-parts-title{margin:0 0 5px;color:var(--teal-dark);font-size:8px;font-weight:900;text-align:center;letter-spacing:.05em}.complete-parts{display:grid;grid-template-columns:repeat(5,1fr);gap:4px}.complete-part{min-width:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:3px 1px;border-radius:9px;background:#fff;box-shadow:0 1px 0 var(--line)}.complete-part span:last-child{max-width:100%;overflow:hidden;color:var(--sub);font-size:7px;font-weight:800;line-height:1.15;text-align:center}.complete-part .bone-art{flex:0 0 auto}

/* dinosaur detail */
.detail-complete{padding:6px 8px;border-radius:999px;background:#f2bc35;color:#604415;font-size:9px;font-weight:900;white-space:nowrap}.dino-detail-scroll{min-height:0;flex:1;overflow-y:auto;padding:0 2px 8px}.detail-tabs{position:sticky;top:0;z-index:3;display:flex;gap:5px;padding:4px;margin-bottom:8px;border-radius:15px;background:#dec9a3}.detail-tab{flex:1;min-height:44px;border:0;border-radius:11px;background:transparent;color:var(--sub);font-size:12px;font-weight:900;cursor:pointer}.detail-tab.is-on{background:var(--teal);color:#fff;box-shadow:0 2px 0 var(--teal-dark)}.detail-visual{padding:12px 10px 10px;border:1px solid rgba(103,73,40,.12);border-radius:21px;background:var(--paper);box-shadow:0 3px 0 rgba(111,76,40,.14);text-align:center}.detail-visual #dino-detail-art{min-height:182px;display:flex;align-items:center;justify-content:center;overflow:hidden;border-radius:15px;background:radial-gradient(circle at 50% 35%,#fffdf4 0,#f6e6c5 70%)}.detail-bone-art .bone-art{max-width:100%}.detail-bone-art .bone-art img,.detail-bone-art .bone-art canvas{max-width:100%;height:auto}.detail-life-art img{display:block;width:100%;height:auto;max-height:330px;object-fit:contain}.detail-life-empty div{display:flex;flex-direction:column;align-items:center;gap:7px;color:#a28b6e}.detail-life-empty span{font-size:45px;filter:grayscale(1);opacity:.55}.detail-life-empty strong{font-size:14px;line-height:1.45}.detail-visual p{margin:9px 2px 0;color:var(--sub);font-size:10px;line-height:1.5}.detail-about{margin-top:9px;padding:14px;border-radius:20px;background:var(--paper);box-shadow:0 3px 0 rgba(111,76,40,.14)}.detail-about h3{margin:2px 0 8px;font-size:17px}.detail-about>p{margin:0 0 10px;font-size:13px;font-weight:700;line-height:1.7}.detail-facts{display:grid;gap:6px;margin:0}.detail-facts>div{display:grid;grid-template-columns:minmax(115px,.9fr) 1.1fr;align-items:center;gap:7px;padding:9px 10px;border-radius:11px;background:#f8eed9;font-size:11px}.detail-facts dt{font-weight:900}.detail-facts dd{margin:0;color:var(--sub);font-weight:700}.detail-facts .fact-pending{display:block;color:var(--sub);text-align:center}.detail-future{margin-top:9px;padding:11px 13px;border:1px dashed #cbb181;border-radius:16px;color:var(--sub);background:rgba(255,250,240,.55)}.detail-future span{font-size:11px;font-weight:900}.detail-future p{margin:3px 0 0;font-size:9px;line-height:1.5}

/* result */
.reward{position:fixed;inset:0;z-index:60;display:none;align-items:center;justify-content:center;padding:16px;background:rgba(50,38,26,.58);backdrop-filter:blur(3px)}.reward.is-on{display:flex}.reward-card{position:relative;width:100%;max-width:370px;max-height:94vh;overflow-y:auto;padding:19px 16px 16px;border:3px solid #d0ae6f;border-radius:27px;background:var(--paper);text-align:center;box-shadow:0 14px 45px rgba(55,35,19,.35);animation:pop-in .34s cubic-bezier(.2,1.5,.4,1)}.reward-card::before,.reward-card::after{content:"✦";position:absolute;top:14px;color:var(--gold);font-size:20px}.reward-card::before{left:13px}.reward-card::after{right:13px}
@keyframes pop-in{from{transform:scale(.72);opacity:0}to{transform:scale(1);opacity:1}}.reward-kicker{min-height:15px;margin:0 0 4px;color:var(--teal-dark);font-size:10px;font-weight:900;letter-spacing:.1em}.reward-title{margin:0 0 10px;color:var(--orange-dark);font-size:22px;font-weight:900;line-height:1.25}.reward-handwriting{display:none;grid-template-columns:repeat(5,1fr);gap:5px;margin:5px 0 12px}.reward-handwriting.is-on{display:grid}.hand-card{aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;border:1px solid #decba6;border-radius:11px;background:#fff;box-shadow:0 2px 0 #e5d4b5;overflow:hidden}.hand-card canvas{display:block;width:100%;height:100%}
.reward-emojis{margin-bottom:9px;font-size:29px;letter-spacing:4px;line-height:1.35}.reward-emojis:empty{display:none}.reward-art{display:flex;justify-content:center;margin:0 0 8px}.reward-art:empty{display:none}.reward-achievements{display:none;gap:6px;margin:6px 0 11px;text-align:left}.reward-achievements.is-on{display:grid}.achievement{position:relative;padding:9px 10px 9px 34px;border-radius:12px;background:#fff3d8;color:var(--ink);font-size:12px;font-weight:900}.achievement::before{content:"✓";position:absolute;left:10px;top:50%;width:17px;height:17px;transform:translateY(-50%);border-radius:50%;background:var(--teal);color:#fff;font-size:11px;line-height:17px;text-align:center}.reward-sub{margin:0 0 13px;color:var(--sub);font-size:12px;line-height:1.55}.reward-card .btn{width:100%;min-height:52px}

.confetti{position:fixed;inset:0;z-index:70;display:none;pointer-events:none}.confetti.is-on{display:block}#measure{position:absolute;visibility:hidden}
@media (min-width:520px){.screen{padding-left:18px;padding-right:18px}.cell{font-size:34px}.slot-label{font-size:10px}}
@media (max-height:720px) and (orientation:portrait){.home-topbar{min-height:60px}.mission-card{padding:10px 12px 9px}.mission-copy h2{font-size:17px}.dig-mark{min-height:63px}.dig-bone{font-size:39px}.start{min-height:50px;padding:8px;margin-top:4px}.practice-book{margin-top:7px}.practice-head{padding-bottom:5px}.credit{font-size:7px}}
@media (max-height:720px) and (orientation:portrait){#screen-trace .topbar{min-height:55px;padding-top:5px}.word{min-height:48px;padding-bottom:2px}.trace-char{font-size:39px}.trace-example{padding:5px 9px}.trace-example span{font-size:21px}.trace-example b{font-size:13px}.sess{min-height:39px;padding:3px 7px 5px}.stage{padding:4px 0}.controls{padding-top:7px}.controls .btn{min-height:50px}}
@media (max-width:520px) and (orientation:portrait){#screen-trace .stage{align-items:flex-start;padding-top:18px}}
@media (orientation:landscape) and (max-height:620px){#screen-trace.is-on{display:grid;grid-template-columns:1fr 148px;grid-template-rows:auto 1fr;column-gap:10px}#screen-trace .topbar{grid-column:1/3;grid-row:1}#screen-trace>.word{display:none}#screen-trace .sess{position:absolute;left:50%;top:51px;z-index:4;transform:translateX(-50%)}#screen-trace .stage{grid-column:1;grid-row:2;min-height:0}#screen-trace .controls{grid-column:2;grid-row:2;flex-direction:column;justify-content:center;padding:0 0 6px}#screen-trace .controls .btn{flex:0 0 auto}}
.detail-source{display:block;margin-top:9px;color:var(--teal-dark);font-size:9px;font-weight:800;text-align:right}.detail-source[hidden]{display:none}

/* ---- ホネ1つの きろく（マスを押すと下から出る） ---- */
/* 5さいがマスを押していたので、押せるようにした。
   押せそうに見えるものが押せないのは、いちばん伝わらない壊れ方 */
.slot{border:none;font-family:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}
.slot:active{transform:translateY(2px)}

.sheet{
  position:fixed;inset:0;z-index:65;display:none;
  align-items:flex-end;justify-content:center;
  background:rgba(74,59,42,.42);padding:0 10px calc(10px + var(--pad));
}
.sheet.is-on{display:flex}
.sheet-card{
  background:var(--paper);border-radius:26px 26px 20px 20px;
  padding:18px 18px 16px;width:100%;max-width:420px;text-align:center;
  box-shadow:0 -8px 30px rgba(74,59,42,.25);
  animation:sheet-up .28s cubic-bezier(.2,1.3,.4,1);
}
@keyframes sheet-up{from{transform:translateY(30px);opacity:0}to{transform:translateY(0);opacity:1}}
.sheet-art{display:flex;justify-content:center;align-items:center;min-height:118px}
.sheet-q{font-size:56px;color:#d8ccb6;font-weight:700}
.sheet-kicker{font-size:12px;color:var(--sub);margin:2px 0 0}
.sheet-title{font-size:21px;margin:2px 0 6px;color:var(--ink)}
.sheet-day{font-size:13px;color:var(--accent);margin:0 0 10px}
.sheet-hand{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;margin-bottom:8px}
.sheet-hand canvas{background:#fff;border-radius:12px;box-shadow:0 2px 0 var(--line)}
.sheet-char{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;background:#fff;border-radius:12px;font-size:22px;
  box-shadow:0 2px 0 var(--line);
}
.sheet-note{font-size:12px;color:var(--sub);margin:0 0 14px}

/* ---- きょうりゅう詳細：きみの きろく ---- */
/* もとは「これから ここに ふやせるよ」の空箱だった。
   掘り出した日と、そのとき書いた文字（本人の筆跡）が入る */
.detail-record{
  background:var(--paper);border-radius:20px;padding:14px 16px 16px;
  box-shadow:0 3px 0 var(--line);margin-bottom:12px;
}
.detail-record h3{font-size:16px;margin:2px 0 8px}
.record-day{font-size:14px;color:var(--accent);margin:0 0 4px}
.record-lead{font-size:12px;color:var(--sub);margin:0 0 10px}
.record-chars{display:flex;flex-wrap:wrap;gap:6px}
.record-chars canvas{background:#fff;border-radius:12px;box-shadow:0 2px 0 var(--line)}
.record-char{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;background:#fff;border-radius:12px;font-size:22px;
  box-shadow:0 2px 0 var(--line);
}

/* ---- とちゅうでやめたときの「さいしょから」 ---- */
.restart{
  display:block;width:100%;margin-top:8px;border:none;border-radius:14px;
  padding:10px 8px;font-family:inherit;font-size:13px;cursor:pointer;
  background:transparent;color:var(--sub);text-decoration:underline;
}
.restart.is-hidden{display:none}

/* ===== キャラ ===== */
/* はじまりの絵。1.6秒で ひとりでに あく（押しても あく） */
.splash{position:fixed;inset:0;z-index:90;display:none;align-items:center;justify-content:center;background:#241809;transition:opacity .4s}
.splash.is-on{display:flex}.splash.is-off{opacity:0;pointer-events:none}
.splash img{display:block;width:100%;height:100%;object-fit:contain}

/* なぞる画面の相棒（ニャビット）。
   板の下のあいた土に立つ。大きさは fit() が土の広さから決める＝
   せまい画面では出さない（板を小さくしてまで置くものではない） */
.buddy-slot{position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:var(--buddy,0px);height:var(--buddy,0px);pointer-events:none}
.buddy-soil{position:absolute;left:50%;bottom:-3px;transform:translateX(-50%);width:124%;height:23%;border-radius:50%;background:#bc9463;opacity:.34}
.buddy{position:absolute;left:50%;top:0;height:100%;width:auto;max-width:none;transform:translateX(-50%);opacity:0;transition:opacity .2s;filter:drop-shadow(0 4px 0 rgba(74,49,27,.13))}
.buddy.is-on{opacity:1}
@keyframes buddy-hop{0%,100%{transform:translateX(-50%) translateY(0)}38%{transform:translateX(-50%) translateY(-13px)}72%{transform:translateX(-50%) translateY(0)}}
.buddy.hop{animation:buddy-hop .52s ease-out}

/* ごほうびの顔（Dr.よこぼ／ニャビット） */
.reward-face{display:none;height:92px;width:auto;margin:-2px auto 2px;filter:drop-shadow(0 3px 0 rgba(74,49,27,.14))}
.reward-face.is-on{display:block}

/* ===== しょうじょう ===== */
.cert-scroll{min-height:0;flex:1;overflow-y:auto;display:flex;flex-direction:column;justify-content:center;gap:10px;padding:4px 2px 8px}
/* よこ向きでは 高さのほうが先に足りなくなる（3:2の絵） */
.cert-frame{position:relative;container-type:inline-size;width:100%;max-width:min(100%, calc((100vh - 210px) * 1.5));margin:0 auto;border-radius:14px;overflow:hidden;box-shadow:0 5px 0 rgba(111,76,40,.22)}
.cert-frame img{display:block;width:100%;height:auto}
/* 日付は 元画(1536x1024)の空欄の位置に合わせて置く。
   数字の大きさは枠の幅につく（cqw）＝どの画面幅でも同じ収まりになる */
.cert-fill{position:absolute;top:67.2%;transform:translate(-50%,-50%);color:#4a3520;font-size:4.4cqw;font-weight:900;line-height:1;white-space:nowrap;text-shadow:0 1px 0 rgba(255,255,255,.35)}
.cert-year{left:39.2%}.cert-month{left:50.6%}.cert-day{left:60.2%}
.cert-turn{margin:0;color:var(--sub);font-size:10px;font-weight:800;text-align:center;opacity:.8}
.cert-frame{cursor:pointer}
/* たてに持ったままでも大きく見せたいので、絵のほうを90度回す。
   たて390pxの画面で 366px幅 → 561pxの長さになる（1.5倍） */
.cert-zoom{position:fixed;inset:0;z-index:80;display:none;align-items:center;justify-content:center;background:rgba(38,26,14,.94)}
.cert-zoom.is-on{display:flex}
.cert-zoom-inner{transform:rotate(90deg)}
.cert-zoom .cert-frame{width:min(92vh,144vw);max-width:none;box-shadow:0 8px 26px rgba(0,0,0,.5)}
.cert-zoom-hint{position:fixed;left:0;right:0;bottom:calc(10px + var(--pad));margin:0;color:#e8d6b6;font-size:11px;font-weight:800;text-align:center;opacity:.75}
@media (orientation:landscape){.cert-zoom-inner{transform:none}.cert-zoom .cert-frame{width:min(96vw,144vh)}}
.cert-line{margin:0;padding:10px 12px;border-radius:15px;background:var(--paper);color:var(--soil);font-size:13px;font-weight:800;line-height:1.55;text-align:center;box-shadow:0 3px 0 rgba(111,76,40,.16)}
/* ずかんの先頭に出す「しょうじょうを みる」 */
.page.cert-card{background:#fff3cf;border-color:#e6c469;box-shadow:0 3px 0 #dcb75f;text-align:center}
.cert-card .page-title{font-size:16px}.cert-card p{margin:4px 2px 9px;color:var(--soil);font-size:11px;font-weight:800}

/* ===== ホーム（2026-09-02 に組みかえ。50音表は はっくつれんしゅう へ移した） ===== */
/* かなの切りかえ。設定の奥に隠さず、押すボタンのすぐ下に置く
   ＝子どもが自分でカタカナに行ける（所長の指定） */
.kana-pick{grid-column:1/-1;display:flex;gap:5px;padding:4px;margin-top:8px;border-radius:14px;background:#eadabd}
.kana-btn{flex:1;border:0;border-radius:11px;min-height:40px;padding:8px 4px;background:transparent;color:var(--sub);font-size:14px;font-weight:800;cursor:pointer}
.kana-btn.is-on{background:var(--teal);color:#fff;box-shadow:0 2px 0 var(--teal-dark)}
.kana-btn:active{transform:translateY(2px)}

/* ずかん と れんしゅう。たんけんが主役なので、この2つは一段小さい */
.home-nav{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:auto;padding:11px 0 0}
.home-card{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;min-height:clamp(104px,19vh,158px);padding:14px 10px;border:2px solid rgba(91,62,33,.16);border-radius:22px;background:var(--paper);color:var(--ink);cursor:pointer;text-align:center;box-shadow:0 4px 0 rgba(111,76,40,.18)}
.home-card:active{transform:translateY(3px);box-shadow:none}
.home-card b{font-size:16px;line-height:1.25}
.home-card small{color:var(--sub);font-size:10px;font-weight:700;line-height:1.4}
.home-card-icon{display:flex;align-items:center;justify-content:center;width:78px;height:48px;font-size:34px;line-height:1}
.home-dino-icon{display:block;width:72px;height:48px;object-fit:cover;object-position:center;filter:drop-shadow(0 2px 0 rgba(91,62,33,.14))}
.card-dig{background:#e9f4f0;border-color:#a8cfc4}
.card-train{background:#fff3e2;border-color:#e8bf88}
.home-stars{margin:9px 0 0;text-align:center}
.home-stars span{display:inline-block;padding:6px 14px;border-radius:999px;background:rgba(255,250,240,.95);color:var(--soil);font-size:11px;font-weight:900;box-shadow:0 2px 0 rgba(111,76,40,.16);letter-spacing:.01em}
.home-stars span:empty{display:none}

/* ===== はっくつれんしゅう ===== */
/* ページの見出しはロゴ画像。ホームのボタンは文字のまま
   （ロゴは横長で、ボタンの大きさに縮めると読めない） */
.page-logo{flex:1;min-width:0;margin:0;display:flex;align-items:center;justify-content:center}
.page-logo img{display:block;height:clamp(38px,12vw,52px);width:auto;max-width:100%;object-fit:contain;filter:drop-shadow(0 2px 0 rgba(94,63,30,.16))}
.train-topbar{gap:6px}
#screen-train{background:radial-gradient(circle at 12% 22%,rgba(126,89,50,.09) 0 3px,transparent 4px),linear-gradient(180deg,#f9ecd3 0%,#f4dfb5 100%);background-size:120px 140px,auto}
.train-lead{margin:0 0 8px;color:var(--soil);font-size:12px;font-weight:800;text-align:center}
.train-lead strong{color:var(--orange-dark)}
.train-book{min-height:0;flex:1;display:flex;flex-direction:column;padding:10px 9px 8px;border:1px solid rgba(102,72,43,.12);border-radius:22px;background:rgba(255,250,240,.92);box-shadow:0 3px 0 rgba(111,76,40,.14)}
.train-foot{display:flex;align-items:center;gap:10px;padding:9px 12px;margin-top:9px;border-radius:17px;background:rgba(255,250,240,.72)}
.recent{flex:1;min-width:0}
.recent-list{display:flex;gap:5px;margin-top:4px}
.recent-list span{width:34px;height:34px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:9px;background:#fff;font-size:19px}
.recent-list:empty::after{content:"まだ ないよ";color:var(--sub);font-size:10px;font-weight:700}
.train-note{flex:0 0 auto;margin:0;padding-left:10px;border-left:1px dashed #cbb181;color:var(--sub);font-size:10px;font-weight:800;line-height:1.5;text-align:center}
.cell.is-picked{background:#ffe6c8;border-color:var(--orange);box-shadow:0 3px 0 #e6aa74}
.train-go{flex:0 0 auto;width:100%;margin-top:9px;min-height:58px;max-height:58px;font-size:17px}

/* たてに余裕がある画面だけ、ミッションカードの伸びを止める（伸びすぎると間が抜ける） */
@media (min-height:700px){ .mission-card{max-height:52vh} }
/* よこ向きは、ぜんぶは入らない。切るのではなくスクロールさせる（たて持ち前提のアプリ） */
@media (max-height:560px) and (orientation:landscape){
  #screen-home{overflow-y:auto}
  .mission-card{flex:0 0 auto;grid-template-columns:minmax(0,1fr);padding:12px 14px 12px}
  .dig-mark{display:none}
  .start{margin-top:8px;min-height:56px}
  .home-nav{margin-top:10px}
  .home-card{min-height:92px}
}

/* ===== せってい =====
   ここだけ漢字で書く。ほかの画面は全部ひらがななので、
   見た目だけで「ここは大人のページ」と伝わる（子どもは読めないので閉じる） */
#screen-settings{background:linear-gradient(180deg,#f6ead4 0%,#efe0c4 100%)}
.settings-scroll{min-height:0;flex:1;overflow-y:auto;padding:0 2px 10px}
.set-block{margin-bottom:11px;padding:15px 16px;border:1px solid rgba(103,73,40,.12);border-radius:20px;background:var(--paper);box-shadow:0 3px 0 rgba(111,76,40,.14)}
.set-block h3{margin:0 0 8px;font-size:15px;letter-spacing:.02em}
.set-block p{margin:0 0 11px;color:var(--sub);font-size:12px;line-height:1.75}
.set-lab h3{color:var(--teal-dark)}
.set-link{display:flex;align-items:center;justify-content:center;min-height:50px;border-radius:15px;background:var(--teal);color:#fff;font-size:14px;font-weight:900;text-decoration:none;box-shadow:0 3px 0 var(--teal-dark)}
.set-link:active{transform:translateY(3px);box-shadow:none}
.set-rows{display:grid;gap:6px;margin:0}
.set-rows>div{display:grid;grid-template-columns:minmax(112px,.85fr) 1.15fr;align-items:center;gap:8px;padding:9px 10px;border-radius:11px;background:#f8eed9;font-size:12px}
.set-rows dt{font-weight:800}.set-rows dd{margin:0;color:var(--sub);font-weight:700}
.set-rows a{color:inherit}
.set-reset{width:100%;margin-top:11px;min-height:50px;background:#f4e3e0;color:var(--danger);box-shadow:0 3px 0 #e0c3bd;font-size:14px}
.set-note{margin:8px 2px 0 !important;color:var(--sub);font-size:10px;text-align:center;line-height:1.6}
/* しょうじょうの下。絵にはもう「YOKOBO AI LAB」の看板が描いてあるので、字は小さく */
.cert-lab{margin:0;color:var(--sub);font-size:10px;font-weight:800;text-align:center}
.cert-lab a{color:var(--teal-dark)}

/* ===== ずかん：番号つきの枠。名前はそろうまで隠す（2026-09-02） ===== */
.dino-no{flex:0 0 auto;display:flex;align-items:center;justify-content:center;min-width:34px;height:28px;padding:0 7px;border-radius:9px;background:#e3d3b4;color:#6b5232;font-size:14px;font-weight:900;letter-spacing:.04em}
.page.dino.full .dino-no{background:var(--gold);color:#5a3f12}
.page-title.unknown{color:#b09a76;letter-spacing:.12em}
.dino-left{margin:7px 2px 0;padding:6px 8px;border-radius:10px;background:rgba(255,255,255,.55);color:var(--soil);font-size:10px;font-weight:800;text-align:center}
.slot-label small{display:block;color:#a9906d;font-size:7px;font-weight:800;line-height:1.1}