:root{--bg:#f1f5f9;--card:#fff;--ink:#0f172a;--mute:#64748b;--line:#e2e8f0;--pri:#4f46e5;--pri-d:#4338ca;--pri-s:#eef2ff;--em:#059669;--em-s:#d1fae5;--red:#dc2626;--field:#f8fafc;
box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0b1120;--card:#111a2e;--ink:#e2e8f0;--mute:#94a3b8;--line:#243049;--pri:#818cf8;--pri-d:#a5b4fc;--pri-s:#1e2447;--em:#34d399;--em-s:#0b3b2e;--red:#f87171;--field:#0d1527;color-scheme:dark}}
:root[data-theme="dark"]{--bg:#0b1120;--card:#111a2e;--ink:#e2e8f0;--mute:#94a3b8;--line:#243049;--pri:#818cf8;--pri-d:#a5b4fc;--pri-s:#1e2447;--em:#34d399;--em-s:#0b3b2e;--red:#f87171;--field:#0d1527;color-scheme:dark}
html{scroll-padding-top:env(safe-area-inset-top,0px)}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 system-ui,-apple-system,"Segoe UI","Hiragino Sans","Noto Sans JP","Noto Sans Devanagari",sans-serif}
header{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:env(safe-area-inset-top,0px);z-index:5}
.bar{max-width:1200px;margin:auto;padding:10px 16px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.logo{font-weight:800;font-size:18px;color:var(--pri)}.logo span{color:var(--em)}
nav{display:flex;gap:6px;margin-left:auto}
nav a{text-decoration:none;border:0;background:none;color:var(--mute);padding:8px 14px;border-radius:8px;font:600 14px inherit;cursor:pointer}
nav a.on{background:var(--pri-s);color:var(--pri)}
main{max-width:1200px;margin:auto;padding:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;margin-bottom:16px}
h2{margin:0 0 12px;font-size:17px}h3{margin:0 0 8px;font-size:15px}
label{display:block;font-size:12px;font-weight:700;color:var(--mute);margin:10px 0 4px;text-transform:uppercase;letter-spacing:.03em}
input,textarea,select{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;background:var(--field);color:var(--ink);font:inherit}
input:focus,textarea:focus,select:focus{outline:2px solid var(--pri);outline-offset:0}
textarea{min-height:110px;resize:vertical}
.grid{display:grid;gap:12px;grid-template-columns:1fr 1fr}
.btn{border:1px solid var(--line);background:var(--card);color:var(--ink);padding:8px 14px;border-radius:8px;font:600 14px inherit;cursor:pointer}
.btn:hover{border-color:var(--pri)}
.btn.pri{background:var(--pri);color:#fff;border-color:var(--pri)}.btn.pri:hover{background:var(--pri-d)}
.btn.em{background:var(--em);color:#fff;border-color:var(--em)}
.btn.del{color:var(--red)}
.btn.sm{padding:4px 10px;font-size:12px}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.vrow{display:grid;grid-template-columns:1fr 1fr 1fr 1fr auto;gap:6px;margin-bottom:6px}
.hint{font-size:12px;color:var(--mute)}
.list-item{display:flex;gap:10px;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--line)}
.list-item:last-child{border:0}
.tag{display:inline-block;background:var(--em-s);color:var(--em);font-size:11px;font-weight:700;padding:2px 8px;border-radius:99px}
.page{display:none}.page.on{display:block}
.reader{display:grid;grid-template-columns:300px 1fr;gap:16px;align-items:start}
.side{position:sticky;top:calc(70px + env(safe-area-inset-top,0px));max-height:calc(100vh - 100px);overflow:auto}
.art{padding:10px;border-radius:10px;cursor:pointer;border:1px solid transparent}
.art:hover{background:var(--pri-s)}.art.on{background:var(--pri-s);border-color:var(--pri)}
.art b{display:block;font-size:14px}.art small{color:var(--mute)}
.jp{font-size:40px;line-height:2.4;white-space:pre-wrap;font-family:"Hiragino Sans","Noto Sans JP","Yu Gothic",system-ui,sans-serif}
.nofuri rt{display:none}
.np{font-size:16px;line-height:1.9;white-space:pre-wrap}
.switch{display:inline-flex;align-items:center;gap:8px;cursor:pointer;font-weight:600;font-size:14px}
.switch input{width:auto}
.wave{display:flex;gap:3px;align-items:center;height:32px;margin-left:8px}
.wave i{width:4px;height:6px;background:var(--em);border-radius:2px}
.speaking .wave i{animation:w 0.9s ease-in-out infinite}
.wave i:nth-child(2n){animation-delay:.15s!important}.wave i:nth-child(3n){animation-delay:.3s!important}.wave i:nth-child(5n){animation-delay:.45s!important}
@keyframes w{0%,100%{height:6px}50%{height:30px}}
.speeds button.on{background:var(--pri);color:#fff;border-color:var(--pri)}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:8px;border-bottom:1px solid var(--line)}
th{color:var(--mute);font-size:12px;text-transform:uppercase}
.k{font-size:18px;font-weight:700}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:12px}
.fc{perspective:800px;height:150px;cursor:pointer}
.fc>div{position:relative;width:100%;height:100%;transition:transform .5s;transform-style:preserve-3d}
.fc.flip>div{transform:rotateY(180deg)}
.fc .f,.fc .b{position:absolute;inset:0;backface-visibility:hidden;border-radius:12px;border:1px solid var(--line);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:10px;text-align:center}
.fc .f{background:var(--pri-s)}.fc .b{background:var(--em-s);transform:rotateY(180deg)}
.fc .k{font-size:26px}
.tabs{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.tabs button{border:0;background:var(--card);color:var(--ink);padding:6px 12px;cursor:pointer;font:600 13px inherit}
.tabs button.on{background:var(--pri);color:#fff}
.c{border-radius:3px}.c.cc{background:var(--pri);color:#fff}
.s{border-radius:6px;transition:background .2s}.s.hl{background:var(--em-s);box-shadow:0 0 0 3px var(--em-s)}.pair{border-radius:8px;transition:background .2s}.pair.hl{background:var(--em-s);padding-left:10px;padding-right:10px}
.pair{padding:10px 0;border-bottom:1px solid var(--line)}.pair:last-child{border:0}.pair .j{font-size:19px;line-height:2.4;font-family:"Hiragino Sans","Noto Sans JP","Yu Gothic",system-ui,sans-serif}.pair .n{color:var(--em);font-size:15px;line-height:1.8;font-weight:600}
.empty{text-align:center;color:var(--mute);padding:30px}
.lock-card{width:min(calc(100% - 32px),400px);background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:14px;padding:20px}
.lock-card::backdrop{background:#0f172a99}
.btn:disabled{opacity:.5;cursor:not-allowed}
@media(max-width:820px){.reader{grid-template-columns:1fr}.side{position:static;max-height:300px}.grid{grid-template-columns:1fr}.vrow{grid-template-columns:1fr 1fr}.vrow button{grid-column:span 2}}