/* Nihongo Lab — washi paper, sumi ink, vermilion seal. Japanese type bold; Latin/Vietnamese type light. */
:root{
  --paper:#f6f1e7;--panel:#fffdf8;--ink:#17130e;--sub:#756b5d;--line:#e3dac9;--hair:#cdbfa6;
  --red:#b3322a;--red2:#8f241e;--gold:#a3864f;--ok:#3f7d55;--soft:#f1e9da;
  --shadow:0 1px 0 rgba(255,255,255,.6) inset,0 10px 30px -12px rgba(60,40,10,.18);
  --jp:'Shippori Mincho B1','Noto Serif JP','Yu Mincho',serif;
  --hand:'Klee One','Shippori Mincho B1',serif;
  --serif:'Cormorant Garamond','Times New Roman',serif;
  --sans:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',sans-serif;
  --tabh:64px
}
@media (prefers-color-scheme:dark){:root{
  --paper:#121110;--panel:#1b1916;--ink:#f2ece1;--sub:#a99f8f;--line:#2e2a24;--hair:#4a4237;
  --red:#d0553f;--red2:#e06a52;--gold:#bfa06a;--ok:#6fae84;--soft:#221f1a;
  --shadow:0 10px 30px -12px rgba(0,0,0,.6)
}}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--paper);color:var(--ink);font-family:var(--sans);font-weight:300;line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased;
  background-image:radial-gradient(1200px 600px at 100% -10%,rgba(179,50,42,.05),transparent 60%),radial-gradient(900px 500px at -10% 0%,rgba(163,134,79,.06),transparent 60%)}
a{color:var(--red)}
b,strong{font-weight:500}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
button{font:inherit;cursor:pointer;color:inherit}
.jp,.big,.kana,.kj{font-family:var(--jp);font-weight:800}

/* header */
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 86%,transparent);backdrop-filter:saturate(1.2) blur(12px);-webkit-backdrop-filter:saturate(1.2) blur(12px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:16px;min-height:66px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink);flex:none}
.seal{width:38px;height:38px;border-radius:6px;background:var(--red);color:#fff8ef;display:flex;align-items:center;justify-content:center;font-family:var(--jp);font-weight:800;font-size:20px;box-shadow:inset 0 0 0 2px rgba(255,255,255,.18)}
.bt b{display:block;font-family:var(--serif);font-weight:500;font-size:21px;letter-spacing:.4px;line-height:1}
.bt i{font-style:normal;font-family:var(--jp);font-weight:700;font-size:11.5px;color:var(--sub);letter-spacing:2px}
.nav{display:flex;gap:2px;flex:1;justify-content:center}
.nav a{display:flex;align-items:center;gap:6px;text-decoration:none;color:var(--sub);font-size:14px;font-weight:400;padding:7px 11px;border-radius:999px;white-space:nowrap}
.nav a .g{font-family:var(--jp);font-weight:800;font-size:15px;color:var(--gold)}
.nav a.on,.nav a:hover{color:var(--ink);background:var(--panel);box-shadow:var(--shadow)}
.nav a.on .g{color:var(--red)}
.tools{display:flex;gap:8px;align-items:center;flex:none}
.seg{display:flex;background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:3px}
.seg button{border:0;background:none;color:var(--sub);font-weight:500;padding:4px 12px;border-radius:999px;font-size:13px;letter-spacing:.5px}
.seg button.on{background:var(--ink);color:var(--paper)}
.lang{border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:5px 12px;font-weight:500;font-size:13px;letter-spacing:.5px}

/* bottom tab bar (phones) */
.tabbar{display:none}
.sheet{position:fixed;inset:0;z-index:40;background:rgba(10,8,5,.4);display:flex;align-items:flex-end}
.sheet[hidden]{display:none}
.sheet-in{width:100%;background:var(--panel);border-radius:22px 22px 0 0;padding:18px 18px calc(18px + env(safe-area-inset-bottom));box-shadow:0 -10px 40px rgba(0,0,0,.25)}
.sheet-in a{display:flex;align-items:center;gap:14px;padding:13px 6px;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink);font-size:16px}
.sheet-in a .g{font-family:var(--jp);font-weight:800;font-size:22px;color:var(--red);width:30px;text-align:center}

/* type */
main{padding:30px 20px 48px}
.eyebrow{font-family:var(--sans);font-size:11.5px;letter-spacing:3px;text-transform:uppercase;color:var(--gold);font-weight:500;margin:0 0 6px}
h1{font-family:var(--serif);font-weight:300;font-size:clamp(32px,5vw,52px);line-height:1.08;margin:0 0 10px;letter-spacing:.2px}
h1 em{font-style:italic;color:var(--red)}
h2{font-family:var(--serif);font-weight:400;font-size:clamp(22px,3vw,28px);margin:30px 0 12px}
.lead{color:var(--sub);max-width:680px;margin:0 0 22px;font-size:16.5px}
.rule{height:1px;background:linear-gradient(90deg,var(--hair),transparent);margin:22px 0}
.muted{color:var(--sub);font-size:14px}
.small{font-size:12.5px}

/* surfaces */
.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:20px}
.grid{display:grid;gap:14px}
.g4{grid-template-columns:repeat(4,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.stat b{display:block;font-family:var(--serif);font-weight:400;font-size:38px;line-height:1;color:var(--ink)}
.stat span{color:var(--sub);font-size:12.5px;letter-spacing:.3px}
.tile{display:flex;gap:14px;align-items:flex-start;text-decoration:none;color:var(--ink);transition:transform .2s,border-color .2s}
.tile .kj{font-size:44px;line-height:1;color:var(--red);flex:none;width:52px;text-align:center}
.tile b{display:block;font-family:var(--serif);font-weight:500;font-size:22px;line-height:1.15;margin-bottom:3px}
.tile span{color:var(--sub);font-size:14px}
.tile:hover{transform:translateY(-2px);border-color:var(--hair)}
.hero{display:grid;grid-template-columns:1.3fr 1fr;gap:26px;align-items:center;margin-bottom:8px}
.hero .mark{font-family:var(--jp);font-weight:800;font-size:clamp(84px,14vw,170px);line-height:.95;text-align:center;color:var(--ink);letter-spacing:-2px}
.hero .mark span{color:var(--red)}
.hero .mark small{display:block;font-family:var(--serif);font-weight:300;font-style:italic;font-size:18px;letter-spacing:4px;color:var(--gold);margin-top:10px}

.btn{border:1px solid var(--ink);background:var(--ink);color:var(--paper);font-weight:400;letter-spacing:.4px;padding:11px 20px;border-radius:999px;text-decoration:none;display:inline-flex;align-items:center;gap:8px;font-size:15px}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--hair)}
.btn.red{background:var(--red);border-color:var(--red);color:#fff8ef}
.btn.ok{background:var(--ok);border-color:var(--ok);color:#fff}
.btn:disabled{opacity:.4}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.bar2{display:flex;justify-content:space-between;gap:12px;align-items:center;flex-wrap:wrap;margin:6px 0 18px}
.search{width:100%;max-width:380px;border:1px solid var(--line);background:var(--panel);color:var(--ink);border-radius:999px;padding:10px 18px;font:inherit}
.pill{display:inline-block;font-size:11.5px;font-weight:500;border-radius:999px;padding:2px 9px;background:var(--soft);color:var(--sub)}
.pill.done{background:color-mix(in srgb,var(--ok) 16%,transparent);color:var(--ok)}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin:0 0 18px}
.tabs a{text-decoration:none;color:var(--sub);font-size:14px;padding:7px 14px;border-radius:999px;border:1px solid var(--line);background:var(--panel);white-space:nowrap}
.tabs a.on{color:#fff8ef;background:var(--red);border-color:var(--red)}

/* kana & kanji grids */
.kwrap{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:20px;align-items:start}
.kgrid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}
.kc{border:1px solid var(--line);background:var(--panel);border-radius:14px;padding:10px 4px 8px;text-align:center;transition:border-color .15s,transform .15s}
.kc .kana{font-size:34px;display:block;line-height:1.15}
.kc small{color:var(--sub);font-size:12.5px;letter-spacing:.5px}
.kc.empty{visibility:hidden}
.kc:hover,.kc.on{border-color:var(--red)}
.kc.on{box-shadow:0 0 0 2px color-mix(in srgb,var(--red) 25%,transparent)}
.kc.wide{min-width:116px;padding:10px 14px}
.kc.wide .kana{font-size:28px}
.kjgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(86px,1fr));gap:8px}
.kjgrid .kc .kana{font-size:40px}
.stable{display:grid;gap:8px;margin:14px 0}
.srow{display:flex;gap:8px;flex-wrap:wrap}

/* writer */
.writer{position:sticky;top:86px}
.wtitle{display:flex;align-items:baseline;gap:12px;margin-bottom:10px;flex-wrap:wrap}
.wtitle .kana{font-size:46px;line-height:1}
.wtitle .rom{font-family:var(--serif);font-style:italic;font-size:22px;color:var(--gold)}
.wboth{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px}
.ws,.wc{width:100%;aspect-ratio:1/1;border:1px solid var(--line);border-radius:14px;background:
  linear-gradient(var(--line),var(--line)) center/1px 100% no-repeat,linear-gradient(var(--line),var(--line)) center/100% 1px no-repeat,var(--paper);touch-action:none}
.ws path{fill:none;stroke-linecap:round;stroke-linejoin:round}
.ws .ghost{stroke:var(--line);stroke-width:4}
.ws .ink{stroke:var(--ink);stroke-width:4.2;animation:draw .62s ease forwards}
.ws .ink.last{stroke:var(--red)}
.ws text{font-family:var(--sans);font-size:6px;fill:var(--red)}
@keyframes draw{to{stroke-dashoffset:0}}
.facts{display:grid;grid-template-columns:auto 1fr;gap:4px 14px;margin:10px 0;font-size:15px}
.facts dt{color:var(--gold);font-size:12px;letter-spacing:1.5px;text-transform:uppercase;padding-top:3px}
.facts dd{margin:0}
.facts .jp{font-weight:700;font-size:18px}

/* deck & flash */
.decks{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px}
.deck{display:block;text-decoration:none;color:var(--ink);padding:16px}
.deck b{font-family:var(--serif);font-weight:500;font-size:22px;display:block}
.deck .jp{font-size:20px;color:var(--red)}
.deck .bar3{height:3px;background:var(--line);border-radius:3px;margin-top:10px;overflow:hidden}
.deck .bar3 i{display:block;height:100%;background:var(--red)}
.stage{max-width:760px;margin:0 auto;text-align:center}
.face{min-height:min(62vh,520px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;cursor:pointer;user-select:none;padding:28px}
.big{font-size:clamp(64px,15vw,150px);line-height:1.05;letter-spacing:1px}
.reading{font-family:var(--jp);font-weight:700;font-size:clamp(22px,4vw,32px);color:var(--sub)}
.romaji{font-family:var(--serif);font-style:italic;font-weight:400;font-size:clamp(20px,3.4vw,28px);color:var(--gold)}
.meaning{font-family:var(--serif);font-weight:400;font-size:clamp(22px,3.6vw,30px)}
.hint{color:var(--sub);font-size:13px;letter-spacing:.5px}
.answer{display:flex;gap:10px;justify-content:center;margin-top:16px;flex-wrap:wrap}
.progress{height:3px;background:var(--line);border-radius:3px;overflow:hidden;margin:10px 0 16px}
.progress i{display:block;height:100%;background:var(--red);transition:width .3s}
.counter{font-family:var(--serif);font-size:18px;color:var(--sub)}

/* exam */
.opts{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}
.opt{border:1px solid var(--line);background:var(--panel);border-radius:14px;padding:16px;text-align:left;font-size:17px;min-height:64px}
.opt .jp{font-size:22px}
.opt.right{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 12%,var(--panel))}
.opt.wrong{border-color:var(--red);background:color-mix(in srgb,var(--red) 10%,var(--panel))}
.choice{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0 16px}
.choice button{border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:8px 15px;font-size:14px}
.choice button.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.score{font-family:var(--serif);font-weight:300;font-size:clamp(60px,12vw,110px);line-height:1}

/* game */
.mgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;max-width:640px;margin:0 auto}
.mc{aspect-ratio:3/4;border-radius:14px;border:1px solid var(--line);background:var(--ink);position:relative;perspective:600px;padding:0}
.mc .in{position:absolute;inset:0;transition:transform .45s;transform-style:preserve-3d}
.mc .fr,.mc .bk{position:absolute;inset:0;border-radius:13px;display:flex;align-items:center;justify-content:center;backface-visibility:hidden;-webkit-backface-visibility:hidden;padding:6px;text-align:center}
.mc .bk{background:var(--ink);color:var(--gold);font-family:var(--jp);font-weight:800;font-size:28px;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.04) 0 6px,transparent 6px 12px)}
.mc .fr{background:var(--panel);transform:rotateY(180deg)}
.mc .fr .jp{font-size:clamp(28px,6vw,46px)}
.mc .fr .lt{font-family:var(--serif);font-size:clamp(15px,2.6vw,20px);line-height:1.2}
.mc.open .in,.mc.done .in{transform:rotateY(180deg)}
.mc.done .fr{border:2px solid var(--ok)}

/* lists, grammar, intro */
.list{display:grid;gap:8px}
.item{display:flex;gap:12px;align-items:center;justify-content:space-between;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:12px 16px;text-decoration:none;color:var(--ink);text-align:left;width:100%}
.item .jp{font-size:20px;font-weight:700}
.item .m{color:var(--sub);font-size:14px;text-align:right}
.item:hover{border-color:var(--hair)}
.gtitle{font-family:var(--jp);font-weight:800;font-size:clamp(24px,4vw,34px);margin:0 0 6px}
.form{background:var(--soft);border-radius:12px;padding:12px 16px;margin:14px 0;font-family:var(--jp);font-weight:600}
.ex{border-top:1px solid var(--line);padding:14px 0;display:flex;gap:14px;align-items:flex-start}
.ex .j{font-family:var(--jp);font-weight:700;font-size:20px;line-height:1.5}
.ex .k{color:var(--sub);font-size:14px;font-family:var(--jp);font-weight:600}
.ex .r{font-family:var(--serif);font-style:italic;color:var(--gold);font-size:17px}
.speak{border:1px solid var(--line);background:var(--panel);color:var(--red);border-radius:50%;width:38px;height:38px;flex:none;font-size:14px}
.speak:hover{border-color:var(--red)}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 18px}
.chips a{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--ink);border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:7px 14px 7px 8px;font-size:14px}
.chips a .g{font-family:var(--jp);font-weight:800;color:var(--red);width:26px;height:26px;border-radius:50%;background:var(--soft);display:flex;align-items:center;justify-content:center;font-size:14px}
.chips a.on{border-color:var(--red);box-shadow:0 0 0 2px color-mix(in srgb,var(--red) 20%,transparent)}
.ex.now{background:color-mix(in srgb,var(--red) 6%,transparent);border-radius:12px;padding-left:10px}

.foot{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--sub);font-size:13px;padding:24px 20px 44px;border-top:1px solid var(--line)}
.toast{position:fixed;left:50%;bottom:calc(var(--tabh) + 24px);transform:translateX(-50%) translateY(30px);opacity:0;background:var(--ink);color:var(--paper);padding:10px 18px;border-radius:999px;font-size:14px;transition:.25s;pointer-events:none;z-index:60}
.toast.on{opacity:1;transform:translateX(-50%)}

/* tablet */
@media (max-width:1060px){
  .nav a .t{display:none}
  .nav a{padding:8px 10px}
  .nav a .g{font-size:18px}
}
/* phone: app layout with bottom tab bar */
@media (max-width:760px){
  body{padding-bottom:calc(var(--tabh) + env(safe-area-inset-bottom))}
  .nav{display:none}
  .bar{min-height:58px;justify-content:space-between}
  .bt b{font-size:19px}
  main{padding:22px 16px 30px}
  .wrap{padding:0 16px}
  .tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:30;height:calc(var(--tabh) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);
    background:color-mix(in srgb,var(--panel) 92%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1px solid var(--line)}
  .tabbar a,.tabbar button{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;text-decoration:none;color:var(--sub);font-size:10.5px;border:0;background:none;letter-spacing:.3px}
  .tabbar .g{font-family:var(--jp);font-weight:800;font-size:22px;line-height:1;color:var(--sub)}
  .tabbar .on,.tabbar .on .g{color:var(--red)}
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:1fr}
  .hero{grid-template-columns:1fr}
  .hero .mark{order:-1;font-size:96px}
  .kwrap{grid-template-columns:1fr}
  .writer{position:static;order:-1}
  .kgrid{gap:6px}
  .kc .kana{font-size:28px}
  .opts{grid-template-columns:1fr}
  .item{flex-direction:column;align-items:flex-start}
  .item .m{text-align:left}
  .face{min-height:56vh}
  .foot{padding-bottom:20px}
}

/* word forms on cards: Hiragana · Katakana · Romaji */
.forms{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;width:100%;max-width:560px;margin:10px auto 4px}
.forms div{border:1px solid var(--line);border-radius:12px;padding:8px 6px;background:var(--paper)}
.forms span{display:block;font-size:10.5px;letter-spacing:1.5px;text-transform:uppercase;color:var(--gold)}
.forms b{display:block;font-size:clamp(18px,3.4vw,26px);font-weight:800;line-height:1.3;word-break:break-all}
.forms .rmj{font-family:var(--serif);font-style:italic;font-weight:400}

/* alphabet arcade */
.face .pic{font-size:clamp(84px,22vw,150px);line-height:1.1;margin:10px 0}
.item .pic.sm{font-size:30px}
.opts .opt .rmj{font-family:var(--serif);font-size:1.5em;letter-spacing:.04em}
.opts .opt .jp{font-family:var(--jp);font-weight:800;font-size:1.6em}
.choice + .choice{margin-top:8px}
/* quiz card: glyph fills the frame, small caption under it */
.face.qz{min-height:min(58vh,480px);gap:4px;padding:18px}
.face.qz .big{font-size:min(calc(min(80vw,680px) / max(var(--len,1),1)),clamp(150px,42vh,360px));line-height:1;letter-spacing:0;white-space:nowrap}
.face.qz .pic{font-size:clamp(140px,38vh,300px);line-height:1;margin:0}
.face.qz .hint{font-size:12px;letter-spacing:.8px;margin-top:6px;opacity:.75}
@media (max-width:760px){.face.qz{min-height:46vh}.face.qz .big{font-size:min(calc(78vw / max(var(--len,1),1)),clamp(130px,34vh,260px))}}
.stage .opt{text-align:center;font-size:22px;font-family:var(--serif);letter-spacing:.05em}
/* vocab card: word fills the card; when revealed it steps down so forms fit */
.face.vc{min-height:min(66vh,560px)}
.face.vc.open .big{font-size:min(calc(min(80vw,680px) / max(var(--len,1),1)),clamp(110px,24vh,220px))}
.face.vc .forms{max-width:640px;gap:10px}
.face.vc .forms b{font-size:clamp(24px,4.6vw,40px)}
.face.vc .meaning{font-size:clamp(20px,3vw,26px);margin-top:4px}
@media (max-width:760px){.face.vc{min-height:58vh}.face.vc.open .big{font-size:min(calc(78vw / max(var(--len,1),1)),clamp(90px,20vh,160px))}}
/* bigger writer panel: wider column, fills to the bottom of the screen */
@media (min-width:761px){
  .kwrap{grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr)}
  .kwrap .kc .kana{font-size:30px}
  .writer{padding:22px 24px}
  .writer .wboth{gap:14px;margin-bottom:16px}
  .writer .wtitle .kana{font-size:64px}
  .writer .wtitle .rom{font-size:28px}

}
/* romaji cue under the picture; small icon above a word */
.face.qz .cue{font-family:var(--serif);font-style:italic;font-size:clamp(28px,4.4vw,44px);color:var(--gold);letter-spacing:.06em;line-height:1.1;margin-top:4px}
.face.qz .pic.sm2{font-size:clamp(44px,9vh,72px);line-height:1;margin-bottom:2px}
.face.qz .pic.sm2 + .big{font-size:min(calc(min(80vw,680px) / max(var(--len,1),1)),clamp(120px,32vh,280px))}
/* speed match */
.sgrid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:14px}
.st{border:1px solid var(--line);background:var(--panel);border-radius:16px;min-height:120px;display:flex;align-items:center;justify-content:center;transition:transform .15s,opacity .25s,border-color .15s}
.st .jp{font-size:52px;font-weight:800}
.st .rmj{font-family:var(--serif);font-size:30px;letter-spacing:.05em}
.st.on{border-color:var(--red);box-shadow:0 0 0 2px color-mix(in srgb,var(--red) 25%,transparent)}
.st.bad{border-color:var(--red);background:color-mix(in srgb,var(--red) 10%,var(--panel));transform:translateX(3px)}
.st.gone{opacity:0;pointer-events:none;transform:scale(.9)}
@media (max-width:760px){.sgrid{grid-template-columns:repeat(3,minmax(0,1fr))}.st{min-height:96px}.st .jp{font-size:42px}}
.choice a{display:inline-flex;align-items:center;border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:8px 15px;font-size:14px;color:var(--ink);text-decoration:none}
.choice a.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.stage .counter b{font-family:var(--serif);font-size:22px;color:var(--red)}

/* ===================== study sets (study.js) ===================== */
.ssets{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:10px;margin-bottom:8px}
.sset{display:flex;flex-direction:column;gap:2px;text-decoration:none;color:var(--ink);padding:16px 16px 14px;transition:transform .2s,border-color .2s}
.sset .jp{font-size:34px;font-weight:800;color:var(--red);line-height:1.1;margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sset b{font-family:var(--serif);font-weight:500;font-size:19px;line-height:1.2}
.sset:hover{transform:translateY(-2px);border-color:var(--hair)}
.shead{display:flex;flex-direction:column;gap:10px;margin:0 0 16px}
.shead>a{font-size:14px}
.mtabs{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;padding-bottom:2px}
.mtabs::-webkit-scrollbar{display:none}
.mtabs a{flex:none;display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:7px 14px;text-decoration:none;color:var(--ink);font-size:14px}
.mtabs a .g{font-family:var(--jp);font-weight:800;color:var(--red)}
.mtabs a.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.mtabs a.on .g{color:var(--paper)}
.mgrid2{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px;margin:8px 0 22px}
.mtile{display:flex;flex-direction:column;gap:4px;text-decoration:none;color:var(--ink);position:relative;transition:transform .2s,border-color .2s}
.mtile .kj{font-family:var(--jp);font-weight:800;font-size:40px;color:var(--red);line-height:1}
.mtile b{font-family:var(--serif);font-weight:500;font-size:23px;margin-top:6px}
.mtile span{color:var(--sub);font-size:14px}
.mtile i{position:absolute;top:16px;right:16px;font-style:normal;font-size:12px;color:var(--gold);letter-spacing:.5px}
.mtile:hover{transform:translateY(-2px);border-color:var(--red)}
.terms{display:grid;gap:6px}
.term{display:grid;grid-template-columns:minmax(90px,1.1fr) minmax(70px,.8fr) minmax(0,1.6fr) auto;gap:14px;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:12px 16px;text-align:left;color:var(--ink)}
.term .tf .jp{font-size:24px;font-weight:800}
.term .tr{font-family:var(--serif);font-style:italic;color:var(--gold);font-size:18px}
.term .tb{color:var(--sub);font-size:14.5px}
.term:hover{border-color:var(--hair)}
.rmj{font-family:var(--serif);letter-spacing:.04em}
.txt{font-size:16px}
/* flashcards */
.fstat{display:flex;justify-content:space-between;align-items:center;font-size:14px}
.fstat .lrn{color:var(--red)}
.fstat .knw{color:var(--ok)}
.fcard{cursor:pointer}
.face .cue.xl{font-size:clamp(56px,10vw,110px);font-style:normal}
.face .bmean{font-family:var(--serif);font-size:clamp(24px,3.6vw,36px);line-height:1.25;max-width:90%}
.face .rd{font-size:clamp(26px,4vw,40px);font-weight:700;color:var(--sub)}
.btn.no{color:var(--red);border-color:color-mix(in srgb,var(--red) 45%,var(--line))}
/* learn */
.lbars{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:0 0 12px;text-align:left;font-size:13px;color:var(--sub)}
.lbars i{display:block;height:5px;border-radius:5px;background:var(--line);overflow:hidden;margin-top:5px}
.lbars em{display:block;height:100%;background:var(--hair);transition:width .4s}
.lbars .lg em{background:var(--gold)}
.lbars .ms em{background:var(--ok)}
.lbars b{color:var(--ink)}
.opt .k{display:inline-block;width:22px;color:var(--gold);font-size:12px;font-family:var(--sans)}
.fb{margin-top:14px;padding:14px 16px;border-radius:14px;display:flex;flex-direction:column;gap:4px;text-align:left}
.fb.ok{background:color-mix(in srgb,var(--ok) 12%,var(--panel));border:1px solid var(--ok)}
.fb.bad{background:color-mix(in srgb,var(--red) 8%,var(--panel));border:1px solid var(--red)}
.fb .jp{font-size:20px;font-weight:800}
.tform{display:flex;gap:10px;margin-top:14px}
.tin{flex:1;min-width:0;font:inherit;font-size:20px;padding:13px 16px;border-radius:14px;border:1px solid var(--hair);background:var(--panel);color:var(--ink)}
.tin:focus{outline:2px solid color-mix(in srgb,var(--red) 40%,transparent);border-color:var(--red)}
.tin.shake{animation:shake .35s}
@keyframes shake{25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}
.okc{color:var(--ok)}.badc{color:var(--red)}
/* test */
.tpaper h2{margin:26px 0 10px}
.tq{position:relative;padding:18px 18px 16px 52px;margin-bottom:10px}
.tq .qn{position:absolute;left:18px;top:18px;font-family:var(--serif);color:var(--gold);font-size:18px}
.tqp{font-size:18px;margin-bottom:10px}
.tqp .jp{font-size:30px;font-weight:800}
.tq .choice{margin:0}
.tq .opts{margin-top:6px}
.tq .tin{width:100%;font-size:18px}
.tq .tfx{margin-top:8px;font-size:14.5px}
.tq.ok{border-color:var(--ok)}.tq.bad{border-color:var(--red)}
.tq .opt.on,.tq .choice button.on{border-color:var(--ink);box-shadow:0 0 0 1px var(--ink)}
.tmt{display:grid;grid-template-columns:1.2fr 1fr;gap:18px}
.tmt .tq{box-shadow:none;border:0;border-bottom:1px solid var(--line);border-radius:0;padding-left:40px;margin:0}
.tmt .tq .qn{left:6px}
.tmt select{font:inherit;padding:8px 10px;border-radius:10px;border:1px solid var(--hair);background:var(--panel);color:var(--ink)}
.mtr{display:grid;gap:8px;align-content:start}
.mtr div{border:1px solid var(--line);border-radius:12px;padding:10px 12px;background:var(--paper)}
.mtr b{color:var(--red);margin-right:8px}
.tres{text-align:center;padding:26px;margin-bottom:10px}
/* match tiles (text side) */
.st.back .txt{font-size:15px;padding:0 8px;line-height:1.3}
.st .jp{font-size:clamp(28px,4vw,46px);font-weight:800}
/* blocks */
.blk{max-width:560px;margin:0 auto}
.bhud{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;font-size:15px;color:var(--red)}
.bhud b{font-family:var(--serif);font-size:24px;color:var(--ink)}
.bgrid{display:grid;grid-template-columns:repeat(8,1fr);gap:3px;background:var(--line);padding:3px;border-radius:14px;aspect-ratio:1/1}
.bc{border:0;border-radius:6px;background:var(--panel);padding:0;min-width:0}
.c1{background:#b3322a!important}.c2{background:#a3864f!important}.c3{background:#3d5a80!important}.c4{background:#2f7d5b!important}.c5{background:#7a4fa0!important}
.bc.pv{background:color-mix(in srgb,var(--ok) 35%,var(--panel))}
.bc.pvx{background:color-mix(in srgb,var(--red) 25%,var(--panel))}
.tray{display:flex;justify-content:center;gap:14px;margin:14px 0}
.piece{position:relative;display:grid;gap:3px;padding:10px;border:1px solid var(--line);border-radius:12px;background:var(--panel);width:auto}
.piece i{display:block;width:18px;height:18px;border-radius:4px}
.piece i.c0{background:var(--hair)}
.piece.sel{border-color:var(--ink);box-shadow:0 0 0 2px var(--ink)}
.piece.used{visibility:hidden}
.piece .lock{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:16px}
.bq{padding:16px;text-align:center}
.bqp .jp{font-size:44px;font-weight:800}
/* falling words */
.rbox{position:relative;height:min(52vh,440px);overflow:hidden;padding:0;background:linear-gradient(var(--panel),color-mix(in srgb,var(--gold) 8%,var(--panel)))}
.ground{position:absolute;left:0;right:0;bottom:0;height:10px;background:color-mix(in srgb,var(--red) 30%,var(--line))}
.drop{position:absolute;top:0;display:flex;flex-direction:column;align-items:center;padding:8px 14px;border-radius:14px;background:var(--paper);border:1px solid var(--hair);box-shadow:var(--shadow)}
.drop .jp{font-size:clamp(30px,5vw,46px);font-weight:800;line-height:1.1}
.drop .pic{font-size:30px}
.drop .ans{font-family:var(--serif);font-style:italic;color:var(--red);font-size:20px}
.drop.pop{animation:popx .4s forwards}
.drop.land{border-color:var(--red);background:color-mix(in srgb,var(--red) 10%,var(--paper))}
@keyframes popx{to{opacity:0;transform:scale(1.6)}}
.rover{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
/* blast */
.blast{position:relative;padding:0;overflow:hidden;height:min(56vh,470px)}
.btarget{position:absolute;left:0;right:0;top:0;z-index:2;padding:12px;text-align:center;background:color-mix(in srgb,var(--paper) 88%,transparent);border-bottom:1px solid var(--line)}
.btarget .jp{font-size:clamp(34px,5vw,52px);font-weight:800}
.bfield{position:absolute;left:0;right:0;top:86px;bottom:0}
.bub{position:absolute;left:100%;max-width:62%;padding:12px 20px;border-radius:999px;border:1px solid var(--hair);background:var(--panel);box-shadow:var(--shadow);animation:fly linear forwards;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:18px}
.bub .rmj{font-size:24px}
.bub.b1{background:color-mix(in srgb,#b3322a 10%,var(--panel))}.bub.b2{background:color-mix(in srgb,#a3864f 14%,var(--panel))}.bub.b3{background:color-mix(in srgb,#3d5a80 12%,var(--panel))}.bub.b4{background:color-mix(in srgb,#2f7d5b 12%,var(--panel))}
.bub.hit{animation-play-state:paused;border-color:var(--ok);background:color-mix(in srgb,var(--ok) 25%,var(--panel));transform:scale(1.15);transition:transform .2s}
.bub.pop{animation-play-state:paused;opacity:.25;border-color:var(--red);text-decoration:line-through}
.bub.fade{animation-play-state:paused;opacity:.15}
@keyframes fly{from{left:100%}to{left:-65%}}
@media (max-width:760px){
  .term{grid-template-columns:1fr auto;gap:4px 10px}
  .term .tr,.term .tb{grid-column:1}
  .term .sp{grid-row:1;grid-column:2}
  .tmt{grid-template-columns:1fr}
  .lbars{font-size:12px}
  .piece i{width:14px;height:14px}
  .tform .btn{padding:11px 14px}
}
.seg button.soon{opacity:.32;cursor:not-allowed}
@media (max-width:520px){.seg button{padding:4px 8px;font-size:12px}}
.face.qz.lq{min-height:auto;padding:22px 18px}
.face.qz.lq .big{font-size:min(calc(min(80vw,640px) / max(var(--len,1),1)),clamp(90px,22vh,190px))}
.face.qz.lq .cue.xl{font-size:clamp(48px,9vh,96px)}
.blk{max-width:1000px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);grid-template-areas:"hud hud" "grid q" "tray q";column-gap:22px;align-items:start}
.blk .bhud{grid-area:hud}.blk .bgrid{grid-area:grid;max-height:68vh}.blk .tray{grid-area:tray}.blk .bq{grid-area:q;position:sticky;top:90px}
.blk .bq .opts{grid-template-columns:1fr 1fr}
@media (max-width:760px){.blk{grid-template-columns:1fr;grid-template-areas:"hud" "q" "grid" "tray"}.blk .bq{position:static;margin-bottom:10px;padding:12px}.blk .bqp .jp{font-size:34px}.blk .bq .opt{min-height:48px;padding:10px}}
@media (max-width:520px){.top .bt i{display:none}.top .brand .bt b{font-size:15px}.tools{gap:6px}.seg{padding:2px}.seg button{padding:4px 7px;font-size:11.5px}.lang{padding:4px 9px}
.mgrid2{grid-template-columns:1fr 1fr;gap:8px}.mtile{padding:14px}.mtile .kj{font-size:30px}.mtile b{font-size:18px}.mtile span{font-size:12.5px}.mtile i{top:10px;right:10px;font-size:10.5px}}
/* romaji as the prompt: big, light serif */
.face .big.rq{font-family:var(--serif);font-weight:400;font-style:normal;letter-spacing:.02em;line-height:1}
.face .tag{font-size:12px;letter-spacing:3px;text-transform:uppercase;color:var(--gold);margin-bottom:-4px}
.opts .opt .jp{font-size:clamp(30px,4.4vw,44px)}
.face.vc .cue{font-size:clamp(34px,5vw,56px)}
.face.qz:has(.rq){min-height:auto;padding:28px 18px}
.face.qz .big.rq{font-size:min(calc(min(80vw,680px) / max(var(--len,1),1)),clamp(110px,24vh,230px))}
@media (max-width:760px){.face.qz:has(.rq){padding:20px 14px}.face.qz .big.rq{font-size:min(calc(78vw / max(var(--len,1),1)),clamp(90px,18vh,170px))}.stage .opts{grid-template-columns:1fr 1fr}.stage .opt{min-height:64px;padding:10px}}
.face.vc .cue{font-size:clamp(40px,7vw,64px)}
.btarget .rmj{font-size:clamp(38px,6vw,60px)}
.bub .jp{font-size:clamp(26px,3.6vw,34px);font-weight:800}
.bqp .rmj{font-size:clamp(38px,5vw,52px)}
.tqp .rmj{font-size:28px}
.fb .rmj{font-size:20px}

/* ===================== navigation: Learn │ Practice ▾ │ Self-intro ===================== */
.nav{align-items:center;gap:4px}
.ngrp{display:flex;gap:2px}
.nsep{width:1px;height:22px;background:var(--line);margin:0 8px;flex:none}
.dd{position:relative}
.ddb{display:flex;align-items:center;gap:6px;border:0;background:none;color:var(--sub);font:inherit;font-size:14px;padding:7px 11px;border-radius:999px;cursor:pointer;white-space:nowrap}
.ddb .g{font-family:var(--jp);font-weight:800;font-size:15px;color:var(--gold)}
.ddb .car{font-size:10px;opacity:.6;transition:transform .2s}
.dd.on .ddb,.ddb:hover,.dd.open .ddb{color:var(--ink);background:var(--panel);box-shadow:var(--shadow)}
.dd.on .ddb .g{color:var(--red)}
.ddp{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(-4px);min-width:330px;background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:0 18px 50px rgba(30,20,10,.16);padding:8px;opacity:0;visibility:hidden;transition:opacity .16s,transform .16s,visibility .16s;z-index:50}
.ddp::before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
.dd:hover .ddp,.dd:focus-within .ddp,.dd.open .ddp{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dd:hover .car,.dd.open .car{transform:rotate(180deg)}
.ddp a,.sheet-in a{display:flex;align-items:flex-start;gap:14px;padding:12px 12px;border-radius:12px;text-decoration:none;color:var(--ink)}
.ddp a:hover,.ddp a.on{background:var(--paper)}
.ddp a .g,.sheet-in a .g{font-family:var(--jp);font-weight:800;font-size:24px;color:var(--red);width:30px;text-align:center;line-height:1.1;flex:none}
.tx{display:flex;flex-direction:column;gap:2px;min-width:0}
.tx b{font-family:var(--serif);font-weight:500;font-size:18px;line-height:1.2}
.tx small{color:var(--sub);font-size:12.5px;line-height:1.4}
.sheet-in .eyebrow{margin:4px 6px 6px}
.sheet-in a{border-bottom:1px solid var(--line);border-radius:0;padding:13px 6px}
.sheet-in a:last-child{border-bottom:0}
.sheet-in a.sm .tx b{font-size:15px;color:var(--sub)}
.seg.idle{opacity:.45}
.seg.idle:hover{opacity:1}
.foot a.fab{color:var(--sub)}
@media (max-width:1180px){.nav a .t,.ddb .t{font-size:13.5px}.nav a,.ddb{padding:7px 9px}.nsep{margin:0 4px}}
@media (max-width:1060px){.ddb .t{display:none}.ddb{padding:8px 10px}.ddb .g{font-size:18px}.ddp{left:auto;right:-60px;transform:translateY(-4px)}.dd:hover .ddp,.dd:focus-within .ddp,.dd.open .ddp{transform:none}}

/* ===================== course (course.js) ===================== */
.clist{display:grid;gap:10px;margin-top:10px}
.cles{display:flex;align-items:center;gap:18px;text-decoration:none;color:var(--ink);padding:16px 20px;transition:transform .2s,border-color .2s}
.cles:hover{transform:translateY(-2px);border-color:var(--red)}
.cles .cn{font-family:var(--serif);font-size:30px;color:var(--gold);width:42px;flex:none;line-height:1}
.cles .cbody{flex:1;min-width:0;display:flex;flex-direction:column;gap:6px}
.cles b{font-family:var(--serif);font-weight:500;font-size:21px;line-height:1.25}
.cchips{display:flex;gap:8px;flex-wrap:wrap}
.cchips i{font-style:normal;font-size:13px;color:var(--sub);border:1px solid var(--line);border-radius:999px;padding:3px 10px;background:var(--paper)}
.cchips i.jp{font-size:16px;color:var(--ink);font-weight:700}
.cles .go{color:var(--red);font-size:20px}
.cles .ok{color:var(--ok);font-size:13px;white-space:nowrap}
.cles.seen .cn{color:var(--ok)}
.ctitle{font-size:clamp(30px,4.6vw,48px)}
.csec{margin-top:26px}
.csec h2{margin:0}
.ckana{display:grid;grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:10px}
.ck{display:flex;flex-direction:column;align-items:center;gap:2px;border:1px solid var(--line);background:var(--panel);border-radius:18px;padding:16px 6px 12px;box-shadow:var(--shadow);transition:transform .15s,border-color .15s}
.ck .jp{font-size:clamp(44px,6vw,64px);font-weight:800;line-height:1.05}
.ck small{font-family:var(--serif);font-size:20px;color:var(--gold);letter-spacing:.04em}
.cwords{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:12px}
.cw{display:flex;flex-direction:column;align-items:center;gap:4px;border:1px solid var(--line);background:var(--panel);border-radius:20px;padding:18px 10px 14px;box-shadow:var(--shadow);transition:transform .15s,border-color .15s}
.cw .pic{font-size:54px;line-height:1.1}
.cw .jp{font-size:clamp(28px,3.6vw,38px);font-weight:800;line-height:1.15}
.cw .rd{font-family:var(--jp);font-weight:700;color:var(--sub);font-size:16px}
.cw small{font-family:var(--serif);font-size:20px;color:var(--gold);letter-spacing:.04em}
.ck:hover,.cw:hover{transform:translateY(-2px);border-color:var(--hair)}
.ck.now,.cw.now,.cs.now{border-color:var(--red);box-shadow:0 0 0 2px color-mix(in srgb,var(--red) 22%,transparent)}
.cs .jp{font-size:22px}
.cprac{display:flex;flex-wrap:wrap;gap:8px}
@media (max-width:760px){.ckana{grid-template-columns:repeat(5,minmax(0,1fr));gap:6px}.ck{padding:10px 2px 8px;border-radius:14px}.ck .jp{font-size:32px}.ck small{font-size:14px}.cwords{grid-template-columns:1fr 1fr;gap:8px}.cw .pic{font-size:42px}.cles{padding:14px}.cles .cn{font-size:22px;width:30px}.cles b{font-size:18px}}
.cles .cn.jp{font-family:var(--jp);font-weight:800;color:var(--red);font-size:32px;text-align:center}
.hero-cta{flex-wrap:wrap;gap:10px}.hero-cta .jp{font-family:var(--jp);font-weight:800;font-size:16px;opacity:.9}
.hero-cta .btn{padding:10px 16px;font-size:14.5px;gap:6px}@media (max-width:520px){.hero-cta .btn{flex:1 1 calc(50% - 10px);justify-content:center}}
@media (min-width:900px){.hero{grid-template-columns:1.7fr 1fr}}
/* kana side by side */
.kboth{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:start}
.kside{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:16px;box-shadow:var(--shadow)}
.kbh{margin:0 0 12px;font-family:var(--serif);font-weight:500;font-size:20px;color:var(--sub);display:flex;align-items:baseline;gap:10px}
.kbh .jp{font-family:var(--jp);font-weight:800;font-size:26px;color:var(--red)}
.kboth .kc .kana{font-size:clamp(28px,3vw,40px)}
.kboth .kc.on{background:color-mix(in srgb,var(--red) 8%,var(--panel))}
.kboth .stable{margin:0}.kboth .srow{flex-wrap:wrap}.kboth .kc.wide{min-width:0;flex:1 1 70px}
@media (max-width:760px){.kboth{gap:8px}.kside{padding:8px;border-radius:14px}.kboth .kgrid{gap:4px}.kboth .kc{padding:6px 2px 4px;border-radius:10px}.kboth .kc .kana{font-size:22px}.kboth .kc small{font-size:10px}.kbh{font-size:13px;margin-bottom:8px}.kbh .jp{font-size:16px}.kboth .kc.wide{flex-basis:44px}}

/* ===================== romaji colour: 瑠璃色 ruri-iro (lapis blue) ===================== */
:root{--rmj:#1e50a2}
@media (prefers-color-scheme:dark){:root{--rmj:#7fa8ec}}
.kc small,.wtitle .rom,.romaji,.cue,.rmj,.ck small,.cw small,.term .tr,.forms .rmj,.tsent .rmj,.drop .ans{color:var(--rmj)!important}
.kc small{font-weight:500;font-size:13.5px;letter-spacing:.6px}
.kboth .kc small{font-size:14px}
.ck small,.cw small{font-weight:500}
.opt .rmj,.st .rmj,.bub .rmj{color:var(--rmj)}
.opt.right .rmj,.opt.wrong .rmj{color:inherit}
@media (max-width:760px){.kboth .kc small{font-size:11px}}

/* ===================== topics (topics.js) ===================== */
.tgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;margin-top:10px}
.tcard{display:flex;flex-direction:column;align-items:flex-start;gap:3px;text-decoration:none;color:var(--ink);padding:18px;transition:transform .2s,border-color .2s}
.tcard:hover{transform:translateY(-3px);border-color:var(--red)}
.tcard .ti{font-size:44px;line-height:1.1;margin-bottom:8px}
.tcard b{font-family:var(--serif);font-weight:500;font-size:21px;line-height:1.2}
.tcard .jp{font-size:16px;font-weight:700;color:var(--red)}
.tcard small{color:var(--sub);font-size:12.5px;margin-top:4px}
.thead{display:flex;align-items:center;gap:16px;margin:6px 0 14px}
.thead .ti{font-size:64px;line-height:1}
.thead h1{margin:0}
.thead .eyebrow{margin:0}
.ltabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin:0 0 14px}
.ltabs a{display:flex;align-items:center;gap:10px;padding:12px 14px;border:1px solid var(--line);border-radius:16px;background:var(--panel);text-decoration:none;color:var(--ink);position:relative}
.ltabs a .g{font-family:var(--jp);font-weight:800;font-size:24px;color:var(--gold)}
.ltabs a .t{font-size:14.5px;line-height:1.25}
.ltabs a i{position:absolute;top:8px;right:10px;font-style:normal;font-size:11px;color:var(--sub)}
.ltabs a.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.ltabs a.on .g{color:#fff8ef}
.ltabs a.on i{color:var(--paper);opacity:.7}
.cw .tm,.tsent .tm{font-style:normal;font-size:13.5px;color:var(--sub);line-height:1.35;margin-top:2px}
.tsents{display:grid;gap:10px}
.tsent{display:flex;flex-direction:column;align-items:flex-start;gap:4px;text-align:left;border:1px solid var(--line);background:var(--panel);border-radius:18px;padding:16px 52px 16px 20px;position:relative;box-shadow:var(--shadow);color:var(--ink)}
.tsent .jp{font-size:clamp(22px,2.6vw,28px);font-weight:800;line-height:1.35}
.tsent .rd{font-family:var(--jp);font-weight:700;color:var(--sub);font-size:15px}
.tsent .rmj{font-size:18px;font-style:italic}
.tsent .sp{position:absolute;right:18px;top:18px;font-size:18px;opacity:.6}
.tsent.now{border-color:var(--red);box-shadow:0 0 0 2px color-mix(in srgb,var(--red) 22%,transparent)}
.gchips i{font-size:16px!important;padding:6px 14px!important}
@media (max-width:760px){.tgrid{grid-template-columns:1fr 1fr;gap:8px}.tcard{padding:14px}.tcard .ti{font-size:36px}.tcard b{font-size:17px}.ltabs{grid-template-columns:1fr 1fr}.thead .ti{font-size:46px}.tsent{padding:14px 44px 14px 14px}}

/* ===================== three-script colours + glossy word cards ===================== */
/* 朱色 shu-iro (hiragana) · 常磐色 tokiwa-iro (katakana) · 瑠璃色 ruri-iro (romaji) */
:root{--hira:#d9480f;--kata:#00805a;--rmj:#1e50a2;--gloss:#fffdf8;--gloss2:#f8f1e4;--goldline:color-mix(in srgb,var(--gold) 38%,var(--line))}
@media (prefers-color-scheme:dark){:root{--hira:#ff8a5c;--kata:#4fd1a1;--rmj:#7fa8ec;--gloss:#23201b;--gloss2:#1b1915}}
.cw{position:relative;overflow:hidden;gap:2px!important;padding:22px 12px 18px!important;border-radius:24px!important;
  background:linear-gradient(165deg,var(--gloss) 0%,var(--gloss2) 100%)!important;border:1px solid var(--goldline)!important;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.9),0 1px 2px rgba(60,40,10,.06),0 14px 30px -18px rgba(70,45,10,.45)!important;
  transition:transform .25s cubic-bezier(.2,.8,.2,1),box-shadow .25s,border-color .25s!important}
.cw::before{content:"";position:absolute;inset:0 0 auto 0;height:46%;background:linear-gradient(180deg,rgba(255,255,255,.75),rgba(255,255,255,0));pointer-events:none}
.cw::after{content:"";position:absolute;left:18%;right:18%;bottom:0;height:2px;border-radius:2px;background:linear-gradient(90deg,transparent,var(--gold),transparent);opacity:.55}
.cw:hover{transform:translateY(-4px)!important;border-color:color-mix(in srgb,var(--gold) 70%,var(--line))!important;box-shadow:inset 0 1px 0 rgba(255,255,255,.9),0 22px 40px -20px rgba(70,45,10,.55)!important}
.cw.now{border-color:var(--red)!important;box-shadow:0 0 0 2px color-mix(in srgb,var(--red) 25%,transparent),0 18px 36px -20px rgba(120,30,20,.5)!important}
.cw>*{position:relative;z-index:1}
.cw .pic{filter:drop-shadow(0 6px 8px rgba(60,40,10,.18));margin-bottom:6px}
.cw .jp{font-size:clamp(30px,3.6vw,42px)!important;letter-spacing:.02em}
.cw .kh{font-family:var(--jp);font-weight:800;font-size:clamp(19px,2.2vw,24px);color:var(--hira);line-height:1.25;margin-top:6px}
.cw .kk{font-family:var(--jp);font-weight:700;font-size:clamp(16px,1.9vw,20px);color:var(--kata);line-height:1.25}
.cw .kr{font-family:var(--serif)!important;font-size:clamp(17px,1.9vw,21px)!important;font-weight:500!important;color:var(--rmj)!important;letter-spacing:.06em;margin-top:2px}
.cw .tm{margin-top:6px!important}
@media (prefers-color-scheme:dark){.cw::before{background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,0))}.cw{box-shadow:0 14px 30px -18px rgba(0,0,0,.7)!important}}
/* the same three colours everywhere a word is shown in its three forms */
.tsent .rd,.face .rd,.fb .rd{color:var(--hira)!important}
.forms div:nth-child(1) b{color:var(--hira)}
.forms div:nth-child(2) b{color:var(--kata)}
.forms div:nth-child(3) b{color:var(--rmj)}
.forms div:nth-child(1){border-top:3px solid var(--hira)}
.forms div:nth-child(2){border-top:3px solid var(--kata)}
.forms div:nth-child(3){border-top:3px solid var(--rmj)}
.term .tb.jp{color:var(--hira)}
@media (max-width:760px){.cw{padding:16px 6px 14px!important;border-radius:18px!important}.cw .jp{font-size:26px!important}.cw .kh{font-size:17px}.cw .kk{font-size:15px}.cw .kr{font-size:15px!important}}
/* topic meanings (VI / EN) */
.cw .tm{display:block;width:84%;margin-top:8px!important;padding-top:8px;border-top:1px solid var(--goldline);font-family:var(--sans);font-style:normal;font-size:14px;line-height:1.35;color:var(--ink)!important;opacity:.82}
.tsent .tm{display:block;margin-top:6px!important;padding-top:6px;border-top:1px dashed var(--line);font-family:var(--sans);font-style:normal;font-size:16px;line-height:1.45;color:var(--ink)!important;opacity:.85;align-self:stretch}
@media (max-width:760px){.cw .tm{font-size:12.5px;width:92%}.tsent .tm{font-size:14.5px}}
.cw .tm{font-size:15.5px!important;opacity:1!important;font-weight:500}.tsent .tm{opacity:1!important;font-size:17px!important}
/* responsiveness: instant feedback on navigation and taps */
.pgload{min-height:50vh;display:flex;align-items:center;justify-content:center;opacity:0;animation:pgin .2s ease .12s forwards}
.pgload .jp{font-size:46px;color:var(--red);font-weight:800;animation:pgpulse 1s ease-in-out infinite}
@keyframes pgin{to{opacity:1}}@keyframes pgpulse{50%{opacity:.35;transform:scale(.92)}}
a,button{touch-action:manipulation;-webkit-tap-highlight-color:transparent}
.brand,.nav a,.ddb,.tabbar a,.tabbar button,.btn{transition:transform .12s ease,background-color .15s,color .15s}
.brand:active,.nav a:active,.ddb:active,.tabbar a:active,.tabbar button:active,.btn:active{transform:scale(.96)}
.brand{cursor:pointer;padding:4px 8px 4px 0;border-radius:12px}
/* per-script colouring of readings + self-intro hierarchy (Japanese > kana > romaji > translation) */
.ht{color:var(--hira)}.kt{color:var(--kata)}
.ex .j{font-size:clamp(22px,2.6vw,28px)!important;font-weight:800!important;line-height:1.45!important;color:var(--ink)}
.ex .k{font-size:clamp(16px,1.8vw,19px)!important;font-weight:700!important;letter-spacing:.04em;margin-top:2px;color:var(--hira)}
.ex .r{font-size:clamp(17px,1.9vw,20px)!important;font-weight:500;color:var(--rmj)!important;letter-spacing:.03em;margin-top:2px}
.ex .m{font-size:14.5px;color:var(--sub);margin-top:6px;line-height:1.5}
.ex .speak{flex:none}
.tsent .rd{font-size:17px!important;font-weight:700!important;letter-spacing:.03em}
@media (max-width:760px){.ex .m{font-size:13.5px}}

/* ===================== account (auth.js) & legal pages ===================== */
.acct{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--panel);color:var(--ink);border-radius:999px;padding:5px 12px 5px 8px;font:inherit;font-size:13.5px;cursor:pointer;white-space:nowrap}
.acct .g{font-family:var(--jp);font-weight:800;color:var(--red);font-size:15px}
.acct.in{padding:2px;border-color:var(--gold)}
.acct img,.acct .ini{width:30px;height:30px;border-radius:50%;display:block;object-fit:cover}
.acct .ini{display:flex;align-items:center;justify-content:center;background:var(--red);color:#fff8ef;font-weight:600}
.acct-sheet{max-width:460px;margin:0 auto;text-align:center;padding:6px 4px}
.acct-sheet h2{margin:4px 0 8px}
.acct-sheet .gbtn{display:flex;justify-content:center;min-height:46px;margin:18px 0 12px}
.acct-sheet .consent{line-height:1.55}
.acct-sheet .row{justify-content:center}
.acct-head{display:flex;align-items:center;gap:14px;justify-content:center;text-align:left}
.acct-head img{width:56px;height:56px;border-radius:50%}
.acct-head b{display:block;font-family:var(--serif);font-weight:500;font-size:22px}
.acct-head span{display:block}
.btn.danger{color:var(--red);border-color:color-mix(in srgb,var(--red) 40%,var(--line));margin-top:10px}
.guestbar{position:fixed;left:50%;transform:translateX(-50%);bottom:18px;z-index:35;display:flex;align-items:center;gap:12px;max-width:calc(100% - 24px);background:var(--panel);border:1px solid var(--goldline,var(--line));border-radius:999px;padding:8px 8px 8px 16px;box-shadow:0 14px 40px -16px rgba(40,25,5,.45);font-size:14px}
.guestbar .g{font-family:var(--jp);font-weight:800;color:var(--red);font-size:18px}
.guestbar .btn{padding:8px 16px;font-size:14px}
.guestbar .x{border:0;background:none;color:var(--sub);font-size:20px;padding:0 8px;cursor:pointer}
@media (max-width:760px){.guestbar{bottom:calc(var(--tabh,64px) + 12px);border-radius:18px;font-size:12.5px;padding:8px 8px 8px 12px}.guestbar .t{line-height:1.35}.acct .t{display:none}.acct{padding:5px 8px}}
.legal{max-width:820px;margin:0 auto}
.legal .seg a{border:0;background:none;color:var(--sub);font-weight:500;padding:4px 12px;border-radius:999px;font-size:13px;text-decoration:none}
.legal .seg a.on{background:var(--ink);color:var(--paper)}
.legal-body{font-size:16px;line-height:1.75}
.legal-body h2{margin:30px 0 8px;font-size:24px}
.legal-body h3{margin:20px 0 6px;font-family:var(--serif);font-weight:500;font-size:19px}
.legal-body ul{padding-left:22px}
.legal-body li{margin:4px 0}
/* grammar: coloured patterns + 4th colour for explanations (江戸紫 edo-murasaki) */
:root{--mean:#6a4c93}
@media (prefers-color-scheme:dark){:root{--mean:#c3a9ec}}
.gt{font-size:20px;font-weight:800}
.gjp{font-family:var(--jp);font-weight:800;color:var(--ink)}
.grm{font-family:var(--serif);font-weight:500;font-style:italic;color:var(--rmj);font-size:.92em;letter-spacing:.02em}
.gmean{color:var(--mean)!important}
.list .item .m.gmean{font-size:14.5px;opacity:1}
.gtitle{font-size:clamp(28px,4vw,42px);line-height:1.3}
.gs{font-size:18px;font-weight:500;line-height:1.55}
.ex .j .ht,.gjp .ht{color:var(--hira)}.ex .j .kt,.gjp .kt{color:var(--kata)}
.guestbar{padding:6px 6px 6px 6px;gap:4px}.guestbar .btn .jp{font-family:var(--jp);font-weight:800}
.voice{display:inline-flex;border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:3px;cursor:pointer}
.voice span{font-family:var(--jp);font-weight:800;font-size:13px;padding:3px 8px;border-radius:999px;color:var(--sub)}
.voice span.on{background:var(--red);color:#fff8ef}
@media (max-width:520px){.voice span{padding:2px 6px;font-size:12px}}
/* hierarchy rule: Japanese > kana > romaji > translation (VI/EN always the smallest) */
.gt{font-size:21px!important}
.gt .grm,.gtitle .grm{font-size:.95em}
.list .item .m.gmean{font-size:13px!important;line-height:1.45;max-width:55%}
.gs{font-size:15px!important;font-weight:400!important}
.ex .m,.ex .m.gmean{font-size:13px!important}
.cw .tm{font-size:13px!important;font-weight:400!important}
.tsent .tm{font-size:14px!important}
.face.vc .meaning{font-size:clamp(16px,2.2vw,20px)!important}
@media (max-width:760px){.list .item{flex-direction:column;align-items:flex-start}.list .item .m.gmean{max-width:100%;text-align:left}}

/* ===================== mock exams (mock.js) ===================== */
.mkgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px;margin-bottom:8px}
.mkcard{display:flex;flex-direction:column;gap:6px;text-decoration:none;color:var(--ink);padding:20px;transition:transform .2s,border-color .2s}
.mkcard:hover{transform:translateY(-3px);border-color:var(--red)}
.mkcard .mkjp{font-family:var(--jp);font-weight:800;font-size:30px;color:var(--red);line-height:1}
.mkcard b{font-family:var(--serif);font-weight:500;font-size:22px}
.mkbar{display:block;height:4px;border-radius:4px;background:var(--line);overflow:hidden;margin-top:auto}
.mkbar i{display:block;height:100%;background:var(--ok)}
.mknums{display:grid;grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:8px;margin:16px 0}
.mkn{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:62px;border:1px solid var(--line);background:var(--panel);border-radius:14px;text-decoration:none;color:var(--ink)}
.mkn b{font-family:var(--serif);font-size:22px;font-weight:500}
.mkn i{font-style:normal;font-size:11px;color:var(--sub)}
.mkn.ok{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 10%,var(--panel))}
.mkn.try{border-color:var(--gold)}
.mkn:hover{border-color:var(--red)}
.mkhead{position:sticky;top:66px;z-index:15;display:flex;align-items:center;justify-content:space-between;gap:12px;background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(8px);padding:10px 0;border-bottom:1px solid var(--line)}
.mktime{font-family:var(--serif);font-size:26px;font-weight:500;color:var(--ink);min-width:80px;text-align:right}
.mktime.warn{color:var(--red)}
.mkh1{font-size:clamp(26px,3.6vw,38px);margin:14px 0 4px}
.mksec{margin:30px 0 10px;padding-bottom:6px;border-bottom:2px solid var(--red);display:inline-block}
.mkq{margin:10px 0;padding:16px 18px}
.mkqh{display:flex;gap:12px;align-items:baseline}
.mkno{font-family:var(--serif);font-size:20px;color:var(--gold);min-width:24px}
.mkqt{font-family:var(--jp);font-weight:700;font-size:15px;color:var(--sub);line-height:1.6}
.mkjp2{font-family:var(--jp);font-weight:700;font-size:clamp(20px,2.4vw,26px);line-height:1.7;margin:10px 0 6px 36px;white-space:normal}
.mkjp2 u{text-decoration:underline 2px var(--red);text-underline-offset:6px}
.mkplay{margin:10px 0 4px 36px}
.mkopts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:10px 0 0 36px}
.mkopts.two{grid-template-columns:repeat(2,minmax(0,140px))}
.mko{display:flex;gap:10px;align-items:center;text-align:left;border:1px solid var(--line);background:var(--paper);border-radius:12px;padding:11px 14px;font-family:var(--jp);font-weight:700;font-size:18px;color:var(--ink);cursor:pointer}
.mko.lat{font-family:var(--sans);font-weight:400;font-size:15px}
.mko span{font-family:var(--serif);font-size:14px;color:var(--gold);min-width:14px}
.mko:hover{border-color:var(--hair)}
.mko.on{border-color:var(--ink);box-shadow:0 0 0 1px var(--ink);background:var(--panel)}
.mko.right{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 14%,var(--panel))}
.mko.wrong{border-color:var(--red);background:color-mix(in srgb,var(--red) 10%,var(--panel))}
.mkq.ok{border-color:color-mix(in srgb,var(--ok) 50%,var(--line))}
.mkq.bad{border-color:color-mix(in srgb,var(--red) 50%,var(--line))}
.mkfx{margin:8px 0 0 36px;font-size:14px;line-height:1.55}
.mkfx .mkex{color:var(--mean)}
.mkscript{margin-top:6px;font-family:var(--jp);font-weight:600;color:var(--sub);font-size:15px}
.mkres{text-align:center;padding:26px;margin:16px 0}
.mkres.pass{border-color:var(--ok)}
.mkres.fail{border-color:var(--gold)}
.mkverdict{font-family:var(--serif);font-size:24px;margin:0}
.mkres.pass .mkverdict{color:var(--ok)}
.mkres.fail .mkverdict{color:var(--red)}
.mksecs{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px;margin:16px 0;text-align:left}
.mksecs div{position:relative;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:10px 12px 14px;overflow:hidden}
.mksecs span{display:block;font-size:13px;color:var(--sub)}
.mksecs b{font-family:var(--serif);font-size:22px;font-weight:500}
.mksecs i{position:absolute;left:0;bottom:0;height:4px;background:var(--ok)}
@media (max-width:760px){.mkopts{grid-template-columns:1fr;margin-left:0}.mkjp2,.mkplay,.mkfx{margin-left:0}.mkhead{top:58px}.mko{font-size:16px}}
.mkjump{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 4px}
.mkjump a{border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:7px 14px;font-size:13.5px;color:var(--ink);text-decoration:none}
.mkjump a:hover{border-color:var(--red)}
.mkgroup{scroll-margin-top:90px;margin-top:10px}
.mkgroup h2{margin:26px 0 2px}
.mkcard{position:relative}.mkcard.soon{opacity:.6}
.mksoon{position:absolute;top:14px;right:14px;font-size:11px;letter-spacing:.5px;color:var(--gold);border:1px solid var(--goldline,var(--line));border-radius:999px;padding:2px 8px}
.kjgrid .kc small.hv{font-weight:700;letter-spacing:.06em;color:var(--red);font-size:11.5px}.facts .hvbig{font-family:var(--serif);font-weight:600;font-size:24px;letter-spacing:.08em;color:var(--red)}
/* full-screen writing practice (phones) */
body.noscroll{overflow:hidden}
.wfull{position:fixed;inset:0;z-index:60;background:var(--paper);display:flex;flex-direction:column;padding:calc(env(safe-area-inset-top) + 8px) 14px calc(env(safe-area-inset-bottom) + 12px);animation:wfin .18s ease}
@keyframes wfin{from{opacity:0;transform:translateY(12px)}}
.wf-top{display:flex;justify-content:space-between;align-items:center;min-height:40px}
.wf-x{border:0;background:none;font-size:32px;line-height:1;color:var(--ink);padding:0 6px;cursor:pointer}
.wf-box{flex:1;min-height:0;display:flex;flex-direction:column;align-items:center}
.wfull .wtitle{justify-content:center;margin:0 0 6px}
.wfull .wtitle .kana{font-size:40px}
.wfull .wboth{grid-template-columns:1fr;justify-items:center;gap:10px;margin-bottom:8px;width:100%}
.wfull .ws,.wfull .wc{width:min(92vw,36vh);height:auto}
.wfull .facts,.wfull .wf-box>.muted{display:none}
.wfull .row{justify-content:center}
.wf-nav{display:flex;gap:10px;padding-top:8px}
.wf-nav .btn{flex:1;justify-content:center;padding:13px}
/* vocabulary list: hiragana · katakana · romaji in their own colours */
.trio3{display:inline-flex;gap:12px;flex-wrap:wrap;align-items:baseline;margin-left:8px}
.trio3 .h3{color:var(--hira);font-family:var(--jp);font-weight:800;font-size:17px}
.trio3 .k3{color:var(--kata);font-family:var(--jp);font-weight:700;font-size:16px}
.trio3 .r3{color:var(--rmj);font-family:var(--serif);font-weight:500;font-size:18px;letter-spacing:.03em}
.list .item .m{font-size:13.5px}
.term .tb.jp{font-size:16px}
@media (max-width:760px){.trio3{gap:8px;margin-left:0;display:flex;margin-top:2px}.trio3 .h3{font-size:15px}.trio3 .k3{font-size:14px}.trio3 .r3{font-size:15px}}
.cdrills{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:8px}
.cw.cd{padding:12px 8px 10px!important}.cw.cd .jp{font-size:24px!important}.cw.cd .kh{font-size:15px}.cw.cd .kk{font-size:14px}.cw.cd .kr{font-size:15px!important}
/* combined sounds (きゃ, しゅ…): big + small kana stay on one line */
.ck .jp{white-space:nowrap;letter-spacing:-.02em}
.ck.two .jp{font-size:clamp(34px,4.2vw,48px)}
@media (max-width:760px){.ck.two{grid-column:span 2}.ck.two .jp{font-size:30px}}
/* never split a combined sound (きゃ, しゅ, ちょ…) across lines anywhere */
.kc .kana,.ck .jp,.cw .jp,.st .jp,.opt .jp,.mko,.mc .jp,.bub .jp,.tsent .rd,.kh,.kk,.h3,.k3,.wtitle .kana,.face .big,.cue{word-break:keep-all;line-break:strict}
.kc .kana,.ck .jp,.st .jp,.opt .jp,.mc .jp,.wtitle .kana{white-space:nowrap}
.wfull{height:100dvh}
.wf-box{overflow-y:auto}
.wfull .ws,.wfull .wc{width:min(84vw,33dvh)!important}
.wf-side{position:absolute;top:24dvh;z-index:2;width:46px;height:78px;border:1px solid var(--line);background:color-mix(in srgb,var(--panel) 90%,transparent);border-radius:14px;font-size:40px;line-height:1;color:var(--red);box-shadow:var(--shadow);cursor:pointer}
.wf-side.l{left:6px}.wf-side.r{right:6px}.wf-side:disabled{opacity:.25}
.wf-nav{flex:none;position:relative;z-index:3;background:var(--paper)}
.wnav{margin:6px 0 10px}.wnav .btn{padding:8px 14px;font-size:14px}
/* small kana (ゃゅょっ…) visibly smaller than the main kana so きゃ reads as one sound */
.skn{font-size:.64em;line-height:1;vertical-align:baseline;margin-left:.01em;display:inline-block}
/* word cards never break a word: one line each, size fitted to the card width */
.cw{container-type:inline-size}
.cw .jp,.cw .kh,.cw .kk,.cw .kr{white-space:nowrap;max-width:100%}
.cw .jp{font-size:min(clamp(30px,3.6vw,42px),calc((100cqi - 18px) / var(--len,1)))!important}
.cw .kh{font-size:min(clamp(19px,2.2vw,24px),calc((100cqi - 18px) / var(--len,1)))}
.cw .kk{font-size:min(clamp(16px,1.9vw,20px),calc((100cqi - 18px) / var(--len,1)))}
.cw .kr{font-size:min(clamp(17px,1.9vw,21px),calc((100cqi - 18px) / var(--len,1)))!important}
@media (max-width:760px){.cw .jp{font-size:min(26px,calc((100cqi - 12px) / var(--len,1)))!important}.cw .kh{font-size:min(17px,calc((100cqi - 12px) / var(--len,1)))}.cw .kk{font-size:min(15px,calc((100cqi - 12px) / var(--len,1)))}.cw .kr{font-size:min(15px,calc((100cqi - 12px) / var(--len,1)))!important}}
/* course sentences = same style as topic conversation sentences */
.tsent .jp{font-family:var(--jp);font-weight:800;color:var(--ink);word-break:keep-all;line-break:strict}
.tsent .rmj{font-family:var(--serif)!important;font-style:italic;font-size:18px!important;color:var(--rmj)!important;letter-spacing:.02em;line-height:1.45}
.tsent.cs .jp .ht{color:var(--ink)}.tsent.cs .jp .kt{color:var(--kata)}
.tsent .rmj{font-size:19px!important;font-weight:500}
/* long words: the card spans two cells and the text keeps its full size */
.cwords .cw.wide,.cdrills .cw.wide{grid-column:span 2}
.cw .jp{font-size:min(clamp(30px,3.6vw,42px),max(24px,calc((100cqi - 18px) / var(--len,1))))!important}
@media (max-width:760px){.cw .jp{font-size:min(28px,max(20px,calc((100cqi - 12px) / var(--len,1))))!important}}
.cwords,.cdrills{grid-auto-flow:row dense}
/* reading drills: same big cards and type as the vocabulary above */
.cdrills{grid-template-columns:repeat(auto-fill,minmax(170px,1fr))!important;gap:12px!important}
.cdrills .cw.cd{padding:22px 12px 18px!important}
.cdrills .cw.cd .jp{font-size:min(clamp(30px,3.6vw,42px),max(24px,calc((100cqi - 18px) / var(--len,1))))!important}
.cdrills .cw.cd .kh{font-size:min(clamp(19px,2.2vw,24px),calc((100cqi - 18px) / var(--len,1)))!important}
.cdrills .cw.cd .kk{font-size:min(clamp(16px,1.9vw,20px),calc((100cqi - 18px) / var(--len,1)))!important}
.cdrills .cw.cd .kr{font-size:min(clamp(17px,1.9vw,21px),calc((100cqi - 18px) / var(--len,1)))!important}
@media (max-width:760px){.cdrills{grid-template-columns:1fr 1fr!important;gap:8px!important}.cdrills .cw.cd{padding:16px 6px 14px!important}.cdrills .cw.cd .jp{font-size:min(28px,max(20px,calc((100cqi - 12px) / var(--len,1))))!important}.cdrills .cw.cd .kh{font-size:min(17px,calc((100cqi - 12px) / var(--len,1)))!important}.cdrills .cw.cd .kk{font-size:min(15px,calc((100cqi - 12px) / var(--len,1)))!important}.cdrills .cw.cd .kr{font-size:min(15px,calc((100cqi - 12px) / var(--len,1)))!important}}
/* letter families shown as separate blocks with breathing room */
.cfam.sep{margin-top:26px}
.cfam.sep:first-of-type{margin-top:6px}
.cfam.sep + .cfam.sep{padding-top:24px;border-top:1px dashed var(--goldline,var(--line))}
.cfamh{display:flex;align-items:baseline;gap:10px;margin:0 0 12px;font-family:var(--serif);font-weight:500;font-size:22px;color:var(--ink)}
.cfamh .jp{font-family:var(--jp);font-weight:800;font-size:18px;color:var(--red)}
.cfamh i{font-style:normal;font-size:13px;color:var(--sub);border:1px solid var(--line);border-radius:999px;padding:1px 9px}
/* rule card at the top of a handout section */
.crule{display:flex;gap:14px;align-items:flex-start;background:color-mix(in srgb,var(--gold) 9%,var(--panel));border:1px solid var(--goldline,var(--line));border-left:4px solid var(--red);border-radius:14px;padding:14px 16px;margin:0 0 14px}
.crule .jp{font-family:var(--jp);font-weight:800;color:var(--red);font-size:20px;white-space:nowrap}
.crule p{margin:0;font-size:15px;line-height:1.6;color:var(--ink)}
@media (max-width:760px){.crule{flex-direction:column;gap:4px}}
/* card titles: 紺色 kon-iro, bold, clearly separate from the description */
:root{--title:#1f3266}
@media (prefers-color-scheme:dark){:root{--title:#a9bcf0}}
.tile b,.mtile b,.mkcard b,.tcard b,.sset b,.cles b,.mkgroup h2,.card.tile b{color:var(--title)!important;font-weight:600!important;letter-spacing:.01em}
.tile span,.mtile span,.mkcard .muted,.tcard small{color:var(--sub)}

/* home: tiles grouped into numbered learning sections */
.hsec{margin-top:26px}
.hsec h3{display:flex;align-items:center;flex-wrap:wrap;gap:4px 10px;margin:0 0 12px;font-size:17px;font-weight:600;color:var(--title)}
.hsec h3 .n{width:28px;height:28px;border-radius:50%;background:var(--title);color:var(--panel);display:inline-grid;place-items:center;font-size:14px;font-weight:700;flex:none}
.hsec h3 .jp{font-size:15px;color:var(--red);font-weight:600;letter-spacing:.06em}
.hsec h3 small{flex-basis:100%;margin-left:38px;font-size:13px;font-weight:400;color:var(--sub)}
.hsec .tile{position:relative}
.hsec .tile .stp{position:absolute;top:10px;right:12px;font-style:normal;font-size:12px;font-weight:700;color:var(--sub);opacity:.6}
/* sound tabs: hiragana / katakana / romaji / meaning, each in its own colour */
.snote .ht,.list .item .jp .ht{color:var(--hira)}
.kc .kana .kt,.snote .kt,.list .item .jp .kt{color:var(--kata)}
.list .item .sx .jp{font-size:22px;font-weight:600}
.list .item .sx .rmj{font-size:15px;font-weight:500;margin-left:6px}
.snote p{line-height:1.75}.snote .ht,.snote .kt{font-weight:600;font-size:1.08em}
.list .item .sx .rmj{font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:14.5px;font-weight:600;letter-spacing:.4px;margin-left:8px}
.list .item .sx{display:flex;align-items:baseline;flex-wrap:wrap;gap:2px 0}
.list .item .m.gmean{font-size:13.5px!important}
/* guest sign-in: just the button, no white pill, no close */
.guestbar,.guestbar:hover{background:transparent!important;border:0!important;box-shadow:none!important;padding:0!important;backdrop-filter:none!important}
.guestbar .x{display:none!important}
.guestbar .btn{box-shadow:0 10px 26px -10px rgba(120,20,10,.55)}
.hero-cta .btn .jp{white-space:nowrap}

/* romaji page: hira / kata / romaji in one cell, each in its own colour */
.rjg{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;margin-bottom:8px}
.rjg.y3{grid-template-columns:repeat(3,minmax(0,1fr))}
.rjc{display:flex;flex-direction:column;align-items:center;gap:2px;padding:10px 4px 8px;background:var(--panel);border:1px solid var(--line);border-radius:14px;cursor:pointer;font:inherit}
.rjc.empty{visibility:hidden}
.rjc .h,.rjc .k{font-family:var(--jp);font-weight:600;line-height:1.1;white-space:nowrap}
.rjc .h{font-size:30px}.rjc .k{font-size:22px}
.rjc .rmj{font-size:14px;font-weight:700;letter-spacing:.5px;margin-top:2px}
.rjc:hover{border-color:var(--hair);transform:translateY(-1px)}
.rjrules{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px}
.rjr{padding:16px 18px}.rjr p{margin:8px 0 0;font-size:14.5px;line-height:1.7;color:var(--ink)}
.rjt{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px}.rjt .jp{font-size:19px;font-weight:700;color:var(--title)}.rjt .rmj{font-size:15px}
.rjr p .ht,.rjr p .kt,.rjt .ht,.rjt .kt{font-weight:600}
.rjkey .ht,.rjkey .kt,.rjkey .rmj{font-weight:700}
@media (max-width:520px){.rjg{gap:5px}.rjc{padding:8px 2px 6px;border-radius:10px}.rjc .h{font-size:24px}.rjc .k{font-size:17px}.rjc .rmj{font-size:12px}}

/* curated link pages (news, jobs, exams & visa) */
.lkgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.lk{display:flex;flex-direction:column;gap:6px;text-decoration:none;color:var(--ink);transition:transform .2s,border-color .2s}
.lk:hover{transform:translateY(-2px);border-color:var(--hair)}
.lk b{font-family:var(--serif);font-size:20px;font-weight:600;color:var(--title);line-height:1.2}
.lk i{font-style:normal;font-size:12px;font-weight:700;letter-spacing:.04em;color:var(--red)}
.lk span{font-size:14.5px;line-height:1.6;color:var(--sub)}
.lk small{margin-top:auto;font-size:12.5px;color:var(--rmj);word-break:break-all}
.lknote{margin-top:22px;font-size:13px}.lknav{margin-top:12px}
/* phones: header must fit (logo seal + level + voice + lang + account) */
@media (max-width:520px){.top .brand .bt{display:none}.top .wrap.bar{gap:8px}.tools{gap:4px;min-width:0}#lvl button{padding-left:7px;padding-right:7px}}
@media (max-width:360px){#lvl button{padding-left:5px;padding-right:5px;font-size:11.5px}}
/* desktop/tablet: brand + tools on row 1, the menu centred on row 2, so nothing spills off-screen */
@media (min-width:761px){.top .bar{flex-wrap:wrap;row-gap:0;justify-content:space-between;min-height:60px}.top .nav{order:3;flex:1 1 100%;justify-content:center;padding:0 0 8px;min-width:0}.top .tools{margin-left:auto}}

/* course index: parts and stages */
.cpart{margin-top:30px}
.cpart h3 .cprog{font-style:normal;font-size:12.5px;font-weight:600;color:var(--sub);background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:2px 10px;margin-left:auto}
.csub{display:flex;align-items:baseline;gap:10px;margin:18px 0 6px 38px;font-size:14.5px;font-weight:600;color:var(--ink)}
.csub .jp{font-size:13px;color:var(--red);letter-spacing:.08em;font-weight:700}
.cpart .clist{margin-left:38px}
@media (max-width:760px){.csub,.cpart .clist{margin-left:0}.cpart h3 .cprog{margin-left:0}}
.rjc .rmj,.rjt .rmj,.rjkey .rmj{font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",sans-serif}
.kc .kana .ht{color:var(--ink)}
.list .item .m.kmean{color:var(--ink);font-size:14px;font-weight:500}
.kc .kana .kt{color:var(--ink)}
/* Japanese words on cards are content, not decoration: ink, like the kana charts */
.deck .jp,.sset .jp,.tcard .jp{color:var(--ink)}
.deck .jp{font-weight:700}
.deck>.muted.small:first-child{display:inline;font-size:13px;letter-spacing:.04em}.deck b{display:inline;margin-left:6px;font-size:20px;color:var(--title)}.deck b::after{content:"";display:block;height:6px}
/* row-2 menu spans the full header width: first item lines up with the logo, last with the account button */
@media (min-width:761px){.top .nav{justify-content:space-between;gap:0}.top .nav .ngrp{display:contents}.top .nav>.ngrp>a:first-child{margin-left:-11px}.top .nav>a:last-child{margin-right:-11px}}
/* topics index: grouped sections */
.tgsec{margin-top:26px}.tgsec .tgrid{margin-top:4px}.tsum{margin:6px 0 0;font-size:13.5px}
/* word cards: text grows to fill the card width (capped), so short words read big and long words still fit */
.cwords .cw .jp,.cdrills .cw.cd .jp{font-size:min(60px,max(26px,calc((100cqi - 22px) / var(--len,1))))!important}
.cwords .cw .kh,.cdrills .cw.cd .kh{font-size:min(34px,max(16px,calc((100cqi - 22px) / var(--len,1))))!important;margin-top:8px}
.cwords .cw .kk,.cdrills .cw.cd .kk{font-size:min(29px,max(15px,calc((100cqi - 22px) / var(--len,1))))!important}
.cwords .cw .kr,.cdrills .cw.cd .kr{font-size:min(27px,max(15px,calc((100cqi - 22px) / var(--len,1))))!important;margin-top:4px}
.cwords .cw .tm{font-size:15.5px!important;line-height:1.4}
.cwords .cw .pic{font-size:58px}
@media (max-width:760px){
.cwords .cw .jp,.cdrills .cw.cd .jp{font-size:min(40px,max(20px,calc((100cqi - 14px) / var(--len,1))))!important}
.cwords .cw .kh,.cdrills .cw.cd .kh{font-size:min(25px,max(14px,calc((100cqi - 14px) / var(--len,1))))!important}
.cwords .cw .kk,.cdrills .cw.cd .kk{font-size:min(21px,max(13px,calc((100cqi - 14px) / var(--len,1))))!important}
.cwords .cw .kr,.cdrills .cw.cd .kr{font-size:min(20px,max(13px,calc((100cqi - 14px) / var(--len,1))))!important}
.cwords .cw .tm{font-size:13.5px!important}
.cwords .cw .pic{font-size:44px}
}
.cwords .cw.full,.cdrills .cw.full{grid-column:1 / -1}
/* course letter charts: the real gojuon grid, 5 columns (3 for combined sounds), centred */
.ckana.gj5,.ckana.gj3{grid-template-columns:repeat(5,minmax(0,1fr));max-width:640px;margin-left:auto;margin-right:auto}
.ckana.gj3{grid-template-columns:repeat(3,minmax(0,1fr));max-width:460px}
.ckana .ckx{visibility:hidden}
@media (max-width:760px){.ckana.gj5{grid-template-columns:repeat(5,minmax(0,1fr))}.ckana.gj3{grid-template-columns:repeat(3,minmax(0,1fr))}}
/* ---------- learner dashboard (#/me) */
.dash{max-width:1080px;margin:0 auto}
.dash .dh{margin:30px 0 12px;font-size:20px;color:var(--title)}
.dprof{display:flex;align-items:center;gap:22px;flex-wrap:wrap;padding:22px 24px}
.dav{width:92px;height:92px;border-radius:50%;overflow:hidden;flex:none;background:var(--paper);border:3px solid var(--panel);box-shadow:0 0 0 2px var(--goldline,var(--line));display:grid;place-items:center}
.dav img{width:100%;height:100%;object-fit:cover}.dav span{font-family:var(--serif);font-size:38px;color:var(--title)}
.dav.big{width:110px;height:110px}
.dinfo{flex:1 1 260px;min-width:0}.dinfo h1{margin:0 0 4px;font-size:30px}.dinfo p{margin:0 0 10px;word-break:break-word}
.dchips{display:flex;flex-wrap:wrap;gap:6px}.dchip{font-size:12.5px;padding:4px 10px;border-radius:999px;background:var(--paper);border:1px solid var(--line);color:var(--sub)}
.dchip.red{background:color-mix(in srgb,var(--red) 10%,var(--panel));color:var(--red);border-color:color-mix(in srgb,var(--red) 30%,var(--line));font-weight:700}
.dact{display:flex;flex-wrap:wrap;gap:8px}
.dkpis{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}
.dkpi{padding:14px 16px;display:flex;flex-direction:column;gap:4px}.dkpi b{font-family:var(--serif);font-size:30px;font-weight:600;color:var(--title);line-height:1}
.dkpi b small{font-size:14px;color:var(--sub);font-weight:400}.dkpi span{font-size:13px;color:var(--sub)}
.dpanel{padding:18px 20px}.dpanel h3{margin:0 0 10px;font-size:16px;color:var(--title)}
.dl{display:grid;grid-template-columns:180px 1fr;gap:10px 18px;margin:0 0 10px}.dl dt{color:var(--sub);font-size:13.5px}.dl dd{margin:0;font-weight:500;word-break:break-word}
.dtab{width:100%;border-collapse:collapse}.dtab th,.dtab td{padding:10px 8px;border-bottom:1px solid var(--line);text-align:left;font-size:14px;vertical-align:middle}
.dtab thead th{font-size:12.5px;color:var(--sub);font-weight:600;text-transform:uppercase;letter-spacing:.04em}.dtab tbody th{color:var(--title);width:110px}
.dtab tr:last-child th,.dtab tr:last-child td{border-bottom:0}
.dbar{display:inline-block;vertical-align:middle;width:min(160px,48%);height:7px;border-radius:7px;background:var(--line);overflow:hidden;margin-right:8px}
.dbar i{display:block;height:100%;background:var(--red);border-radius:7px}.dnum{font-size:12.5px;color:var(--sub);white-space:nowrap}
.dgrid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:22px}
.dgrid3 .dpanel{display:flex;flex-direction:column;gap:8px}.dgrid3 .btn{align-self:flex-start;margin-top:auto}
.dbig{font-family:var(--serif);font-size:34px;margin:0;color:var(--title)}
.dheat{display:grid;grid-auto-flow:column;grid-template-rows:repeat(7,13px);gap:3px;overflow-x:auto;padding-bottom:4px}
.dheat i,.dlegend i{display:inline-block;width:13px;height:13px;border-radius:3px;background:var(--line)}
.dheat .h1,.dlegend .h1{background:color-mix(in srgb,var(--red) 25%,var(--line))}.dheat .h2,.dlegend .h2{background:color-mix(in srgb,var(--red) 50%,var(--line))}
.dheat .h3,.dlegend .h3{background:color-mix(in srgb,var(--red) 75%,var(--line))}.dheat .h4,.dlegend .h4{background:var(--red)}
.dlegend{display:flex;align-items:center;gap:4px;margin:8px 0 16px}
.drecent{list-style:none;margin:0;padding:0}.drecent li{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px dashed var(--line);font-size:14px}
.drecent li:last-child{border-bottom:0}.drecent b{font-weight:600;color:var(--title)}
.dform{display:grid;gap:12px;max-width:560px}.davrow{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.dfl{display:grid;gap:5px}.dfl span{font-size:13px;color:var(--sub);font-weight:600}
.dfl input,.dfl select{font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--panel);color:var(--ink)}
.dfl input:focus,.dfl select:focus{outline:2px solid color-mix(in srgb,var(--red) 35%,transparent);border-color:var(--red)}
.derr{color:var(--red);font-size:14px;margin:0}
.btn.danger{color:var(--red);border-color:color-mix(in srgb,var(--red) 40%,var(--line))}
@media (max-width:900px){.dgrid3{grid-template-columns:1fr}}
@media (max-width:640px){.dkpis{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.dkpis{grid-template-columns:repeat(2,minmax(0,1fr))}.dl{grid-template-columns:1fr;gap:2px 0}.dl dd{margin-bottom:10px}
.dprof{padding:18px}.dav{width:72px;height:72px}.dinfo h1{font-size:24px}.dtab th,.dtab td{padding:8px 4px;font-size:13px}.dbar{width:42%}}
.dkpi b,.dbig,.dnum,.drecent b{font-family:var(--sans,system-ui);font-variant-numeric:lining-nums tabular-nums;letter-spacing:-.01em}.dkpi b{font-size:28px;font-weight:700}

/* self-intro: field groups + interview Q&A practice */
.igrp h3{display:flex;align-items:center;gap:8px;margin:14px 0 6px;font-size:15px;color:var(--title)}
.igrp h3 .jp{color:var(--red);font-size:14px;letter-spacing:.08em}.igrp h3 i{font-style:normal;font-size:12px;color:var(--sub);border:1px solid var(--line);border-radius:999px;padding:1px 8px}
.igrp .chips{margin:4px 0 6px}
#ispeech{margin-top:16px}#ispeech h2 .jp{color:var(--red)}
.iqas{display:grid;gap:4px}
.iqa{padding:12px 0;border-bottom:1px dashed var(--line)}.iqa:last-child{border-bottom:0}
.iq,.ia{display:flex;gap:10px;align-items:flex-start}.iq .ex,.ia .ex{flex:1;border:0;padding:0;margin:0}
.qn{flex:none;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:13px;background:var(--title);color:var(--panel)}
.qn.a{background:var(--red)}
.ishow{margin:8px 0 0 44px;padding:6px 14px;font-size:13.5px}
.ia{margin-top:10px;padding:12px;border-radius:14px;background:color-mix(in srgb,var(--red) 5%,var(--panel));flex-wrap:wrap}
.ikey{flex-basis:100%;display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 10px;margin:8px 0 0 44px;padding:8px 12px;border-left:3px solid var(--red);background:var(--panel);border-radius:8px}
.ikey span{font-size:11.5px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--red)}
.ikey b{font-size:17px}.ikey i{color:var(--rmj);font-style:normal;font-size:13.5px}.ikey em{font-style:normal;color:var(--sub);font-size:13px}
.speak.sm{width:30px;height:30px;font-size:12px}
@media (max-width:560px){.ishow,.ikey{margin-left:0}.qn{width:28px;height:28px;font-size:12px}}
/* grammar: textbook-order sections with a jump list */
.gtoc{display:flex;flex-wrap:wrap;gap:6px;margin:14px 0 4px}
.gtoc a{display:inline-flex;align-items:center;gap:6px;padding:5px 12px 5px 5px;border:1px solid var(--line);border-radius:999px;background:var(--panel);text-decoration:none;color:var(--ink);font-size:13.5px}
.gtoc a .n{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:var(--title);color:var(--panel);font-size:11.5px;font-weight:700}
.gtoc a:hover{border-color:var(--red)}
.gsec{scroll-margin-top:120px}.gsec .list{margin-top:6px}
.gsec h3 small{margin-left:38px}
/* grammar detail: register chip, usage notes, easily-confused patterns */
.greg{display:inline-block;margin:8px 0 2px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.03em;border:1px solid var(--line);color:var(--sub);background:var(--paper)}
.greg.r-formal,.greg.r-written{color:var(--title);border-color:color-mix(in srgb,var(--title) 35%,var(--line))}
.greg.r-casual{color:var(--kata);border-color:color-mix(in srgb,var(--kata) 35%,var(--line))}
.gnote,.gsim{margin-top:22px;padding:14px 16px;border-radius:14px;background:var(--paper);border:1px solid var(--line)}
.gnote{border-left:4px solid var(--red)}.gnote h3,.gsim h3{margin:0 0 8px;font-size:15px;color:var(--title)}.gnote p{margin:0;line-height:1.7}
.gsim1{display:grid;grid-template-columns:minmax(90px,auto) 1fr;gap:4px 14px;padding:8px 0;border-top:1px dashed var(--line)}.gsim1:first-of-type{border-top:0}
.gsim1 b{font-size:17px}.gsim1 p{margin:0;line-height:1.6;font-size:14.5px}
@media (max-width:560px){.gsim1{grid-template-columns:1fr}}
/* language menu (live + planned languages) */
.lang{display:inline-flex;align-items:center;gap:5px}.lang .lg{font-size:13px}.lang .car{font-size:10px;opacity:.6}
.langmenu{position:fixed;z-index:60;min-width:250px;padding:8px;border-radius:16px;background:var(--panel);border:1px solid var(--line);box-shadow:0 20px 50px -18px rgba(40,25,10,.35)}
.langmenu .lmh{margin:4px 8px 6px;font-size:11.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--sub)}
.langmenu button{display:flex;align-items:center;gap:10px;width:100%;padding:9px 10px;border:0;border-radius:10px;background:none;color:var(--ink);font:inherit;text-align:left;cursor:pointer}
.langmenu button:hover{background:var(--paper)}.langmenu button.on{background:color-mix(in srgb,var(--red) 8%,var(--panel))}
.langmenu b{width:28px;font-size:12px;color:var(--title)}.langmenu span{flex:1;font-size:14.5px}
.langmenu i{font-style:normal;color:var(--red);font-weight:700}
.langmenu .soon{opacity:.62;cursor:default}.langmenu em{font-style:normal;font-size:11px;font-weight:600;padding:2px 8px;border-radius:999px;background:var(--paper);border:1px solid var(--line);color:var(--sub)}
html{font-variant-numeric:lining-nums}
.iqa .ia[hidden]{display:none!important}
.langmenu{max-height:min(72vh,560px);overflow-y:auto}
.langmenu .lmt{margin:4px 8px 2px;font-size:13px;font-weight:700;color:var(--title)}
.langmenu .lmh{margin:10px 8px 4px;padding-top:8px;border-top:1px solid var(--line);font-size:11px}
.langmenu .lmh:first-of-type{border-top:0;padding-top:0;margin-top:6px}

/* grouped dropdown picker (self-intro fields, grammar sections) */
.ddrow{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:16px 0 6px}
.ddlab{font-size:12.5px;font-weight:700;color:var(--sub);text-transform:uppercase;letter-spacing:.05em}.ddlab i{font-style:normal;margin-left:4px;padding:1px 8px;border:1px solid var(--line);border-radius:999px;font-size:11.5px}
.ddbtn{display:flex;align-items:center;gap:12px;min-width:min(380px,100%);padding:9px 14px 9px 9px;border:1px solid var(--hair,var(--line));border-radius:14px;background:var(--panel);color:var(--ink);font:inherit;cursor:pointer;text-align:left;box-shadow:var(--shadow)}
.ddbtn:hover,.ddbtn[aria-expanded="true"]{border-color:var(--red)}
.ddbtn .pg,.pickmenu .pg{flex:none;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-family:var(--jp);font-weight:800;color:var(--red);background:var(--paper);font-size:16px}
.ddbtn .pl{flex:1;display:flex;flex-direction:column;font-weight:600;font-size:15.5px;line-height:1.25}.ddbtn .pl small{font-weight:500;font-size:12px;color:var(--sub)}
.ddbtn .car{font-size:12px;color:var(--sub)}
.pickmenu{position:fixed;z-index:60;overflow-y:auto;padding:8px;border-radius:16px;background:var(--panel);border:1px solid var(--line);box-shadow:0 22px 50px -18px rgba(40,25,10,.35)}
.pickmenu .pmh{margin:10px 8px 4px;padding-top:8px;border-top:1px solid var(--line);font-size:11.5px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--sub)}
.pickmenu .pmh:first-child{border-top:0;padding-top:0;margin-top:4px}.pickmenu .pmh .jp{color:var(--red);margin-right:4px}
.pickmenu button{display:flex;align-items:center;gap:10px;width:100%;padding:7px 8px;border:0;border-radius:10px;background:none;color:var(--ink);font:inherit;text-align:left;cursor:pointer}
.pickmenu button:hover{background:var(--paper)}.pickmenu button.on{background:color-mix(in srgb,var(--red) 8%,var(--panel))}
.pickmenu .pg{width:30px;height:30px;font-size:14px}.pickmenu .pl{flex:1;display:flex;flex-direction:column;font-size:14.5px}.pickmenu .pl small{font-size:12px;color:var(--sub)}
.pickmenu i{font-style:normal;color:var(--red);font-weight:700}

/* grammar: 3-tier examples, goals, JLPT practice */
#gtiers h2{margin-top:26px}
.gtabs{display:flex;gap:6px;flex-wrap:wrap;margin:6px 0 10px}
.gtabs button{padding:8px 16px;border:1px solid var(--line);border-radius:999px;background:var(--panel);color:var(--ink);font:inherit;font-weight:600;cursor:pointer}
.gtabs button i{font-style:normal;font-size:12px;color:var(--sub);margin-left:4px}
.gtabs button.on{background:var(--title);border-color:var(--title);color:var(--panel)}.gtabs button.on i{color:var(--panel);opacity:.8}
.ggoal{margin:4px 0 10px;padding:10px 14px;border-radius:12px;background:var(--paper);border-left:4px solid var(--kata);font-size:14.5px;line-height:1.6}
.ggoal b{color:var(--kata);margin-right:4px}
.gtlist .gn{display:inline-grid;place-items:center;width:22px;height:22px;margin-right:8px;border-radius:50%;background:var(--paper);border:1px solid var(--line);font-size:11px;font-weight:700;color:var(--sub);vertical-align:middle;font-family:var(--sans,system-ui)}
.gqs{display:grid;gap:12px}
.gq{padding:14px 16px;border:1px solid var(--line);border-radius:14px;background:var(--panel)}
.gqh{margin:0 0 6px;font-size:12px;font-weight:700;color:var(--sub);letter-spacing:.04em}.gqh span{color:var(--red)}
.gqq{margin:0 0 10px;font-size:19px;line-height:1.7}.gqq .star{color:var(--red)}
.gqo{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.gqo button{display:flex;align-items:center;gap:8px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--paper);color:var(--ink);font:inherit;font-size:16px;text-align:left;cursor:pointer;font-family:var(--jp)}
.gqo button i{font-style:normal;flex:none;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:var(--panel);border:1px solid var(--line);font-size:12px;font-family:var(--sans,system-ui)}
.gqo button:hover{border-color:var(--title)}
.gq.done .gqo button{cursor:default}.gqo button.ok{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 12%,var(--panel))}.gqo button.bad{border-color:var(--red);background:color-mix(in srgb,var(--red) 10%,var(--panel))}
.gqx{margin-top:10px;padding:10px 12px;border-radius:12px;background:var(--paper);font-size:14.5px;line-height:1.6}.gqx p{margin:4px 0 0}.gqx .jp{font-size:17px}
@media (max-width:560px){.gqo{grid-template-columns:1fr}.gqq{font-size:17px}}

/* Japanese inside Vietnamese/English explanations: same colour DNA as everywhere (hira / kata / kanji), body text stays ink */
.gexp{color:var(--ink);font-size:15.5px;line-height:1.75;margin:12px 0 4px}
.jpin{font-family:var(--jp);font-weight:700;color:var(--ink)}
.jpin .ht{color:var(--hira)}.jpin .kt{color:var(--kata)}
.form .jpin{font-weight:800}
.gnote p,.gsim1 p{color:var(--ink)}
.brand .logo{width:44px;height:44px;border-radius:50%;flex:none;display:block;box-shadow:0 2px 8px -3px rgba(120,20,10,.45)}
@media (max-width:520px){.brand .logo{width:38px;height:38px}}
/* eyebrow labels: readable, on-brand vermilion with a soft pill */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:800;letter-spacing:2.2px;color:var(--red);padding:5px 12px 5px 10px;border-radius:999px;background:color-mix(in srgb,var(--red) 9%,var(--panel));border:1px solid color-mix(in srgb,var(--red) 22%,var(--line))}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--red);flex:none}
.sheet-in .eyebrow,.thead .eyebrow{padding:3px 10px 3px 8px}
/* language strip above the footer + breathing room before it */
#app{padding-bottom:36px}
.langbar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 4px;padding:14px 20px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.langbar button{display:inline-flex;align-items:center;gap:7px;padding:4px 6px;border:0;border-radius:8px;background:none;color:var(--ink);font:inherit;font-size:13.5px;font-weight:600;cursor:pointer;white-space:nowrap}
.langbar button img{width:20px;height:15px;border-radius:2px;box-shadow:0 0 0 1px rgba(0,0,0,.08);object-fit:cover}
.langbar button:hover{background:var(--paper)}.langbar button.on{color:var(--red)}
.langbar button.soon{opacity:.55;cursor:default;font-weight:500}
.langbar .lsep{color:var(--line);font-weight:300}
@media (max-width:760px){.langbar{justify-content:center;padding:12px 10px}.langbar .lsep{display:none}.langbar button{font-size:12.5px}}
.langbar{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;justify-content:space-between;gap:2px}
.langbar::-webkit-scrollbar{display:none}
.langbar button{flex:none;font-size:12.5px;padding:4px 4px;gap:6px}
.langbar .lsep{flex:none;padding:0 2px}
@media (max-width:760px){.langbar{justify-content:flex-start;padding:12px 12px}.langbar .lsep{display:inline}}
.langbar.wrap{max-width:none;padding-left:clamp(12px,3vw,40px);padding-right:clamp(12px,3vw,40px)}
.langbar button{font-size:12.5px;padding:3px 3px;gap:5px}.langbar button img{width:18px;height:13.5px}
.langbar .lsep{padding:0}

/* language bar: border spans the page, the items line up with the content column (same left/right edges as the cards) */
.langbar{display:block;padding:12px 0;overflow:visible}
.langbar .lbin{display:flex;flex-wrap:nowrap;align-items:center;justify-content:space-between;gap:0;overflow-x:auto;scrollbar-width:none}
.langbar .lbin::-webkit-scrollbar{display:none}
.langbar .lbin button{flex:none;padding:3px 2px;gap:6px;font-size:13px}
.langbar .lbin button:first-child{padding-left:0}.langbar .lbin button:last-child{padding-right:0}
.langbar .lbc{display:none}
@media (max-width:1099px){.langbar .lbf{display:none}.langbar .lbc{display:inline}.langbar .lbin button{font-size:12.5px;letter-spacing:.02em}}
@media (max-width:700px){.langbar .lsep{display:none}.langbar .lbin{gap:10px;justify-content:flex-start}}

/* installed app (TWA / home screen): no rubber-band page refresh, no long-press callout on controls, safe areas */
.in-app body{overscroll-behavior-y:contain}
.in-app button,.in-app .btn,.in-app nav a{-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}
.in-app header{padding-top:env(safe-area-inset-top)}
.in-app #app{padding-bottom:calc(36px + env(safe-area-inset-bottom))}