:root{--bg:#fbfaf7;--ink:#1c1b19;--muted:#5d5a54;--line:#e3e0d8;--card:#fff;--soft:#f2efe8;--accent:#1f6f5c;--accent-ink:#fff;--accent-soft:#e3f2ec;
--ok:#1e7a46;--ok-soft:#e5f5ea;--bad:#b3261e;--bad-soft:#fbe9e7;--warn:#8a5a00;--warn-soft:#fff4dc;--radius:14px;--shadow:0 1px 2px rgba(0,0,0,.05)}
@media (prefers-color-scheme:dark){:root{--bg:#141413;--ink:#f1efe9;--muted:#a9a59c;--line:#2e2d2a;--card:#1d1c1a;--soft:#25241f;--accent:#4fb39a;--accent-ink:#0d1f1a;--accent-soft:#16302a;
--ok:#5fcf8a;--ok-soft:#163222;--bad:#ff8a80;--bad-soft:#3a1a17;--warn:#f0c060;--warn-soft:#3a2d12}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans","Noto Sans JP","Noto Sans SC","Noto Sans KR","Noto Sans Arabic","Noto Sans Devanagari",sans-serif}
a{color:var(--accent)}img{max-width:100%}
h1{font-size:1.65rem;line-height:1.2;margin:0 0 8px}h2{font-size:1.25rem;margin:24px 0 10px}h3{font-size:1.05rem;margin:12px 0 6px}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:8px;background:var(--card);padding:8px;z-index:9}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
main:focus{outline:none}
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:58px;padding:0 16px;border-bottom:1px solid var(--line);background:var(--bg);position:sticky;top:0;z-index:5}
.brand{display:flex;gap:10px;align-items:center;font-weight:700;text-decoration:none;color:var(--ink)}
.topnav{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end;font-size:.95rem}
.topnav form{margin:0}.linkish{background:none;border:0;color:var(--accent);font:inherit;cursor:pointer;padding:0;text-decoration:underline}
.wrap{max-width:900px;margin:0 auto;padding:22px 16px 60px}.wrap.narrow{max-width:640px}
.lede{color:var(--muted);margin:0 0 20px}.note{color:var(--muted);font-size:.9rem}.loading{color:var(--muted);padding:24px 16px}
.notice{background:var(--warn-soft);border:1px solid var(--line);border-radius:10px;padding:10px 14px;font-size:.92rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin:0 0 16px;box-shadow:var(--shadow)}
.card.error{border-color:var(--bad);background:var(--bad-soft)}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.link-card{display:block;color:inherit;text-decoration:none}.link-card:hover{border-color:var(--accent)}
.tag{display:inline-block;font-size:.78rem;color:var(--muted);border:1px solid var(--line);border-radius:99px;padding:1px 10px;margin:0 6px 6px 0;vertical-align:middle}
.tag.warn{color:var(--warn);background:var(--warn-soft)}.tag.supports{color:var(--ok)}.tag.disputes{color:var(--bad)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:46px;padding:0 18px;border-radius:12px;background:var(--accent);color:var(--accent-ink);font-weight:600;text-decoration:none;border:1px solid transparent;font-size:1rem;cursor:pointer;font-family:inherit}
.btn:disabled{opacity:.55;cursor:not-allowed}.btn.quiet{background:transparent;color:var(--accent);border-color:var(--line)}.btn.danger{background:var(--bad);color:#fff}
.btn.big{width:100%;min-height:54px;font-size:1.05rem;margin:14px 0}.btn.small{min-height:34px;padding:0 10px;font-size:.88rem}
.btn.round{width:46px;height:46px;padding:0;border-radius:50%}.btn.round.small{width:34px;height:34px;min-height:34px}.btn.round.huge{width:96px;height:96px;font-size:2.2rem;display:flex;margin:12px auto 18px}
.chip{border:1px solid var(--line);background:var(--soft);color:var(--ink);border-radius:99px;padding:5px 12px;font-size:.85rem;cursor:pointer;font-family:inherit}
.chip[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent)}
.row{display:flex;gap:10px;align-items:center}.wrap-row{flex-wrap:wrap}.grow{flex:1;min-width:0}
.hero{padding:10px 0 4px}.hero h1{font-size:2rem}.cta{margin:18px 0}
.features{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px;margin-top:20px}.feature{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.feature h2{margin:0 0 6px;font-size:1.05rem}.feature p{margin:0;color:var(--muted);font-size:.95rem}.foot{margin-top:32px;color:var(--muted);font-size:.85rem;border-top:1px solid var(--line);padding-top:12px}
/* phrase card */
.phrase-card{position:relative}.phrase-card .card-actions{position:absolute;top:14px;inset-inline-end:14px;display:flex;gap:6px}
.target{font-size:2rem;line-height:1.25;font-weight:650;margin:0;padding-inline-end:104px;overflow-wrap:anywhere}
.phrase-card.compact .target{font-size:1.5rem}.romanization{color:var(--muted);margin:4px 0 0;font-style:italic}
.reference{font-size:1.2rem;color:var(--muted);margin:8px 0 0}.veiled{filter:blur(9px);user-select:none}
.groups{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 0}.group{display:flex;flex-direction:column;background:var(--soft);border-radius:10px;padding:6px 10px}.group b{font-size:1.1rem}.group small{color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px;align-items:center}.notes{margin-top:10px;font-size:.92rem;color:var(--muted)}.notes p{margin:4px 0}
/* home */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;margin:14px 0 18px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;display:flex;flex-direction:column}.stat b{font-size:1.5rem}.stat span{color:var(--muted);font-size:.88rem}
.meter{height:8px;background:var(--soft);border-radius:99px;overflow:hidden;margin-top:6px}.meter span{display:block;height:100%;background:var(--accent);border-radius:99px}
.cta-card{display:block;text-decoration:none;color:inherit}.cta-card.primary{border-color:var(--accent);background:var(--accent-soft)}.cta-card h2{margin:4px 0}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px;margin-top:8px}
.tile{display:flex;flex-direction:column;align-items:center;gap:6px;padding:16px 8px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;color:var(--ink);font-weight:600;text-align:center}
.tile:hover{border-color:var(--accent)}.tile .icon{font-size:1.7rem}
/* setup */
.lang-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}
.lang-card{display:flex;flex-direction:column;gap:2px;padding:14px;border:2px solid var(--line);border-radius:var(--radius);background:var(--card);color:var(--ink);cursor:pointer;font:inherit;text-align:start}
.lang-card b{font-size:1.2rem}.lang-card small{color:var(--muted)}.lang-card.selected{border-color:var(--accent);background:var(--accent-soft)}
.form{display:flex;flex-direction:column;gap:6px}.form label{font-weight:600;margin-top:8px}.form .check{font-weight:400}
input[type=text],input[type=search],input[type=email],input[type=number],select,textarea{font:inherit;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:10px;padding:10px 12px;width:100%;max-width:100%}
textarea{resize:vertical}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.86rem}.check{display:flex;gap:8px;align-items:center}
.check input{width:20px;height:20px}.help{color:var(--muted)}
/* lessons */
.lessons{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}
.lesson-row{display:flex;gap:12px;align-items:center;padding:12px 14px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;color:var(--ink)}
.lesson-row b{display:block}.lesson-row small{color:var(--muted)}.lesson-row .num{width:34px;height:34px;border-radius:50%;background:var(--soft);display:flex;align-items:center;justify-content:center;font-weight:700;flex:none}
.lesson-row.done .num{background:var(--ok-soft);color:var(--ok)}
.lesson-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:12px}.lesson-head h1{font-size:1.3rem;margin:0}.lesson-head small{color:var(--muted)}
.lesson-head .progress{flex-basis:100%}.back{font-size:1.4rem;text-decoration:none}
.progress{height:10px;background:var(--soft);border-radius:99px;overflow:hidden}.progress span{display:block;height:100%;background:var(--accent);transition:width .3s}
.kicker{text-transform:uppercase;letter-spacing:.06em;font-size:.78rem;color:var(--muted);margin:6px 0 10px;font-weight:700}
.prompt{font-size:1.4rem;font-weight:600;margin:6px 0 14px}
.choices{display:grid;gap:10px}.choice{text-align:start;padding:14px 16px;border:2px solid var(--line);border-radius:12px;background:var(--card);color:var(--ink);font:inherit;font-size:1.05rem;cursor:pointer;min-height:54px}
.choice:hover{border-color:var(--accent)}.choice.right{border-color:var(--ok);background:var(--ok-soft)}.choice.wrong{border-color:var(--bad);background:var(--bad-soft)}
.feedback{font-weight:700;padding:10px 14px;border-radius:10px;margin:12px 0}.feedback.ok{color:var(--ok);background:var(--ok-soft)}.feedback.bad{color:var(--bad);background:var(--bad-soft)}
.build-answer{min-height:62px;border:2px dashed var(--line);border-radius:12px;padding:8px;display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.build-bank{display:flex;flex-wrap:wrap;gap:8px}.tile-word{display:flex;flex-direction:column;align-items:center;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:10px;padding:8px 12px;font:inherit;font-size:1.1rem;cursor:pointer}
.tile-word small{color:var(--muted);font-size:.78rem}.tile-word:disabled{opacity:.3}
.answer-form{display:flex;gap:8px}.answer{font-size:1.2rem}.hint{color:var(--muted)}
.done-card{text-align:center}.big-score{font-size:3rem;font-weight:800;margin:6px 0;color:var(--accent)}
.match{display:grid;grid-template-columns:1fr 1fr;gap:10px}.match .col{display:flex;flex-direction:column;gap:8px}
.match-item{padding:12px;border:2px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink);font:inherit;cursor:pointer;min-height:52px}
.match-item.sel{border-color:var(--accent);background:var(--accent-soft)}.match-item.gone{opacity:.25;pointer-events:none}.shake{animation:shake .35s}
@keyframes shake{25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}
.speak-panel .mic{font-size:1.1rem}.meter-row{display:flex;gap:10px;align-items:baseline;font-size:1.1rem}.meter-row b{font-size:2rem}
.meter-row.clear b{color:var(--ok)}.meter-row.close b{color:var(--warn)}.meter-row.try_again b{color:var(--bad)}
.split{display:grid;grid-template-columns:1fr;gap:16px}@media(min-width:800px){.split{grid-template-columns:minmax(0,1fr) minmax(0,1.3fr)}}
.speak-list{display:flex;flex-direction:column;gap:6px;margin-top:10px;max-height:60vh;overflow:auto}
.phrase-row{text-align:start;padding:10px 12px;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:10px;cursor:pointer;font:inherit}.phrase-row b{display:block}.phrase-row small{color:var(--muted)}
/* dialogs and songs */
.dialog{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px}.bubble{max-width:85%;padding:10px 14px;border-radius:14px;background:var(--soft);position:relative}
.bubble.right{align-self:flex-end;background:var(--accent-soft)}.bubble .target{font-size:1.25rem;padding:0}.bubble .reference{font-size:1rem;margin:2px 0 6px}
.bubble .who{font-size:.75rem;font-weight:700;color:var(--muted)}.bubble.now{outline:3px solid var(--accent)}.bubble.hide-target .target{filter:blur(8px)}
.lyrics{list-style:none;padding:0;display:flex;flex-direction:column;gap:6px;max-height:55vh;overflow:auto}
.lyric{padding:8px 12px;border-radius:10px;border-inline-start:4px solid var(--line)}.lyric .target{font-size:1.3rem;padding:0}.lyric .reference{font-size:.95rem;margin:2px 0 0}
.lyric .role{font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.lyric.response{border-color:var(--warn)}.lyric.chorus{border-color:var(--accent)}
.lyric.now{background:var(--accent-soft)}
/* translate */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin:12px 0 16px;overflow-x:auto}
.tab{padding:10px 14px;text-decoration:none;color:var(--muted);border-bottom:3px solid transparent;white-space:nowrap}.tab.active{color:var(--ink);border-color:var(--accent);font-weight:600}
.lang-row{display:flex;gap:8px;align-items:flex-end;margin-bottom:10px}.lang-row label{flex:1;display:flex;flex-direction:column;gap:4px;font-size:.9rem;color:var(--muted)}
.count{color:var(--muted);display:block;text-align:end}
.drop{display:block;border:2px dashed var(--line);border-radius:var(--radius);padding:22px;text-align:center;color:var(--muted);cursor:pointer}.drop input{display:block;margin:10px auto 0;max-width:100%}
.preview{max-height:260px;border-radius:10px;margin:10px 0;display:block}
.side-by-side{border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:12px 0}
.sbs-head,.sbs-row{display:grid;grid-template-columns:1fr 1fr}.sbs-head b{padding:8px 12px;background:var(--soft);font-size:.85rem}
.sbs-row p{margin:0;padding:10px 12px;border-top:1px solid var(--line);white-space:pre-wrap;overflow-wrap:anywhere}.sbs-row p+p{border-inline-start:1px solid var(--line)}
.sbs-row.uncertain p:last-child{background:var(--warn-soft)}.flag{color:var(--warn);font-weight:700}.why{display:block;color:var(--warn);font-size:.82rem}
@media(max-width:560px){.sbs-head,.sbs-row{grid-template-columns:1fr}.sbs-row p+p{border-inline-start:0}.sbs-head b+b{display:none}}
.label{font-size:.82rem;color:var(--muted)}.result-head{display:flex;flex-wrap:wrap;gap:6px}
.job-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap;padding:10px 0;border-bottom:1px solid var(--line)}
/* history and research */
.tree,.tree ul{list-style:none;padding-inline-start:16px;margin:4px 0}.tree{padding:0}.tree li{margin:3px 0}.proto{color:var(--muted)}
.chain{font-weight:600;color:var(--muted)}.timeline{display:flex;flex-direction:column;gap:8px;margin:10px 0}
.period{background:var(--soft);border-radius:10px;padding:8px 10px;border-inline-start:4px solid var(--accent);min-width:150px;max-width:100%}.period p{margin:4px 0 0;font-size:.9rem}
.period small{display:block;color:var(--muted)}.period.ev-reconstructed{border-color:var(--warn);background:repeating-linear-gradient(45deg,var(--soft),var(--soft) 8px,var(--card) 8px,var(--card) 16px)}
.period.ev-mixed{border-color:var(--warn)}
.claim{border-top:1px solid var(--line);padding:10px 0}.claim.disputed{background:var(--warn-soft);padding:10px;border-radius:10px;border:0;margin:8px 0}.competing{font-size:.92rem}
.badge{display:inline-block;font-size:.75rem;font-weight:700;border-radius:99px;padding:2px 10px;margin-inline-end:6px;background:var(--soft)}
.conf-high,.ev-strong{background:var(--ok-soft);color:var(--ok)}.conf-medium,.ev-moderate{background:var(--accent-soft);color:var(--accent)}.conf-low,.ev-emerging{background:var(--soft);color:var(--muted)}.conf-disputed,.ev-contested{background:var(--warn-soft);color:var(--warn)}
.sources{font-size:.88rem;padding-inline-start:18px}
.skill{margin:10px 0}.calendar{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;max-width:300px}.day{aspect-ratio:1;border-radius:4px;background:var(--soft)}
.day.l1{background:#bfe6da}.day.l2{background:#8fd0bd}.day.l3{background:#4fb39a}.day.l4{background:#1f6f5c}
.langswitch{width:auto;padding:4px 8px;font-size:.9rem}.globe{margin-inline-end:4px}
.toasts{position:fixed;bottom:16px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;gap:8px;z-index:20;width:min(92vw,420px)}
.toast{background:var(--ink);color:var(--bg);padding:10px 14px;border-radius:10px;font-size:.95rem;box-shadow:0 4px 14px rgba(0,0,0,.2)}.toast.ok{background:var(--ok);color:#fff}.toast.warn{background:var(--warn);color:#fff}
/* admin */
.admin-layout{display:grid;grid-template-columns:1fr;min-height:calc(100vh - 58px)}@media(min-width:900px){.admin-layout{grid-template-columns:230px 1fr}}
.side{border-inline-end:1px solid var(--line);padding:16px;display:flex;flex-direction:column;gap:2px;background:var(--card)}
.side a{padding:8px 10px;border-radius:8px;text-decoration:none;color:var(--ink)}.side a.active{background:var(--accent-soft);font-weight:600}.side .who{font-size:.85rem;color:var(--muted);margin:0 0 10px;overflow-wrap:anywhere}
@media(max-width:899px){.side{flex-direction:row;flex-wrap:wrap;border-inline-end:0;border-bottom:1px solid var(--line)}.side .who{flex-basis:100%}}
.admin-main{padding:20px 16px 60px;min-width:0}.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px;margin:8px 0 16px}
table{border-collapse:collapse;width:100%;font-size:.9rem}th,td{text-align:start;padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}th{background:var(--soft);font-weight:600}
tr.click{cursor:pointer}tr.click:hover{background:var(--accent-soft)}.filters{margin:8px 0}.filters input,.filters select{width:auto;flex:1;min-width:140px}
.status{font-size:.78rem;font-weight:700;border-radius:99px;padding:2px 8px;background:var(--soft)}.s-published{background:var(--ok-soft);color:var(--ok)}.s-in_review,.s-approved{background:var(--accent-soft);color:var(--accent)}.s-withdrawn{background:var(--bad-soft);color:var(--bad)}
.problems ul{color:var(--bad)}.code{white-space:pre-wrap;background:var(--soft);padding:10px;border-radius:10px;overflow-x:auto}
.warn{color:var(--warn)}
@media(max-width:480px){h1{font-size:1.4rem}.target{font-size:1.65rem}.hero h1{font-size:1.6rem}.topnav{gap:10px;font-size:.88rem}.brand span{display:none}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
@media(max-width:700px){.period{margin-left:0!important;margin-inline-start:0!important;width:auto!important}}
.timeline{overflow:hidden}