:root{--bg:#faf8f4;--card:#fff;--ink:#1d1d1f;--mute:#6e6e73;--line:#e8e4dc;--acc:#1f6f5c;--acc2:#e8f2ee;--hl:#fff2c6;--r:14px}
@media (prefers-color-scheme:dark){:root{--bg:#141414;--card:#1e1e1e;--ink:#ececec;--mute:#9a9a9a;--line:#2e2e2e;--acc:#5cc3a3;--acc2:#1c2e28;--hl:#4a3f17}}
*{box-sizing:border-box}html,body{margin:0}
body{background:var(--bg);color:var(--ink);font:16px/1.55 Inter,system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer}
.top{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;padding:14px 20px;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.brand{font-weight:700;letter-spacing:-.01em;display:flex;align-items:center;gap:8px}.dot{width:12px;height:12px;border-radius:50%;background:var(--acc)}
#langnav{display:flex;gap:6px}#langnav a{padding:6px 12px;border-radius:999px;font-size:14px;color:var(--mute)}#langnav a.on{background:var(--acc2);color:var(--acc);font-weight:600}
main{max-width:760px;margin:0 auto;padding:24px 20px 120px}
h1{font-size:30px;letter-spacing:-.02em;margin:8px 0 4px;line-height:1.2}.sub{color:var(--mute);margin:0 0 24px}
.stats{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 28px}.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:10px 14px;min-width:96px}.stat b{display:block;font-size:20px}.stat span{font-size:12px;color:var(--mute)}
.level{margin:0 0 28px}.lvh{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:10px}
.lvh h2{font-size:17px;margin:0}.lvh h2 small{color:var(--mute);font-weight:400;margin-left:6px}
.bar{height:5px;background:var(--line);border-radius:9px;overflow:hidden;width:120px;flex:none}.bar i{display:block;height:100%;background:var(--acc)}
.cards{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;transition:transform .12s,border-color .12s;display:block}
.card:hover{transform:translateY(-2px);border-color:var(--acc)}
.card .t{font-size:19px;font-weight:500;margin:4px 0 2px}.card .e{color:var(--mute);font-size:14px}
.meta{display:flex;gap:8px;align-items:center;font-size:12px;color:var(--mute);text-transform:uppercase;letter-spacing:.05em}
.badges{margin-left:auto;display:flex;gap:4px}.bd{font-size:11px;padding:1px 6px;border-radius:6px;background:var(--line);text-transform:none;letter-spacing:0}.bd.on{background:var(--acc2);color:var(--acc)}
.lang-ko .tx,.lang-ko .t,.lang-ko .pw{font-family:"Noto Sans KR",sans-serif}.lang-ja .tx,.lang-ja .t,.lang-ja .pw{font-family:"Noto Sans JP",sans-serif}
.back{color:var(--mute);font-size:14px;display:inline-block;margin-bottom:8px}
.ph h1{font-size:28px}.tools{position:sticky;top:57px;z-index:4;background:var(--bg);display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:10px 0;margin:8px 0 14px;border-bottom:1px solid var(--line)}
.seg{display:inline-flex;background:var(--line);border-radius:10px;padding:3px}.seg button{border:0;background:none;padding:6px 14px;border-radius:8px;font-size:14px}.seg button.on{background:var(--card);box-shadow:0 1px 3px #0002;font-weight:600}
.chip{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:5px 12px;font-size:13px}.chip.on{border-color:var(--acc);color:var(--acc);background:var(--acc2)}
select.chip{appearance:none;padding-right:12px}
.sents{display:flex;flex-direction:column;gap:6px}
.sent{display:flex;gap:10px;padding:10px 12px;border-radius:12px;transition:background .2s}.sent.cur{background:var(--hl)}
.sent .spk{flex:none;width:22px;height:22px;border-radius:50%;font-size:11px;font-weight:700;display:grid;place-items:center;margin-top:9px;background:var(--acc2);color:var(--acc)}.sent .spk.B{background:#f3e6f7;color:#8a3fa0}
.sent .body{flex:1;min-width:0}
.tx{font-size:23px;line-height:2.1;word-break:keep-all}.lang-ja .tx{line-break:strict}
.w{cursor:pointer;border-radius:5px;padding:0 1px;transition:background .1s}.w:hover{background:var(--acc2)}.w.sel{background:var(--acc);color:#fff}
rt{font-size:.5em;color:var(--mute);font-weight:400;letter-spacing:0}.w.sel rt{color:#fffc}.noread rt{visibility:hidden}
.en{color:var(--mute);font-size:15px;margin-top:2px}.noen .en{display:none}
.sbtn{flex:none;border:0;background:none;color:var(--mute);width:32px;height:32px;border-radius:50%;margin-top:6px}.sbtn:hover{background:var(--line);color:var(--acc)}
.listen .tx{font-size:21px}.hidetx .tx{filter:blur(7px);user-select:none}.hidetx .w{pointer-events:none}
.player{position:fixed;left:0;right:0;bottom:0;z-index:6;background:var(--card);border-top:1px solid var(--line);padding:12px 16px calc(12px + env(safe-area-inset-bottom))}
.player .in{max-width:760px;margin:0 auto;display:flex;align-items:center;gap:10px}
.pbtn{border:0;background:var(--line);width:42px;height:42px;border-radius:50%;font-size:16px;flex:none}.pbtn.main{background:var(--acc);color:#fff;width:52px;height:52px;font-size:20px}
.prog{flex:1;height:5px;background:var(--line);border-radius:9px;overflow:hidden}.prog i{display:block;height:100%;background:var(--acc);transition:width .2s}
.pcount{font-size:12px;color:var(--mute);min-width:40px;text-align:right}
.done{margin:28px 0 0;display:flex;justify-content:center}.done button{border:0;background:var(--acc);color:#fff;padding:12px 22px;border-radius:12px;font-weight:600}.done button.ok{background:var(--acc2);color:var(--acc)}
.pop{position:fixed;z-index:20;background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:0 10px 30px #0003;padding:14px 16px;min-width:200px;max-width:min(320px,calc(100vw - 24px))}
.pop .pw{font-size:26px;font-weight:500;display:flex;align-items:center;gap:10px}.pop .pr{color:var(--acc);font-size:15px}.pop .pg{margin-top:6px;font-size:15px}
.pop .pa{border:0;background:var(--acc2);color:var(--acc);width:34px;height:34px;border-radius:50%;margin-left:auto}
.hero{padding:24px;border-radius:20px;background:linear-gradient(135deg,var(--acc2),var(--card));border:1px solid var(--line);margin-bottom:24px}
.langs{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}.langs .card .t{font-size:28px}
footer{color:var(--mute);font-size:12px;text-align:center;margin-top:40px}
@media (max-width:560px){main{padding:16px 14px 120px}h1{font-size:25px}.tx{font-size:21px}.tools{top:53px}.top{padding:12px 14px}.bar{width:80px}}

.banner{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;background:var(--acc2);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;margin:0 0 20px}.banner span{color:var(--mute);font-size:14px}.banner.slim{padding:10px 14px}.bbtns{display:flex;gap:8px}
.qcard{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:20px}.qq{font-weight:600;margin:16px 0 10px}
.opts{display:flex;flex-direction:column;gap:8px;margin-top:10px}.opt{display:block;text-align:left;border:1px solid var(--line);background:var(--bg);border-radius:12px;padding:12px 14px;font-size:15px}.opt:hover{border-color:var(--acc)}.opt.ghost{color:var(--mute);background:none}
.passage{background:var(--bg);border-radius:12px;padding:12px 14px;margin-top:12px;line-height:1.8}.bar.wide{width:100%;margin-top:8px}
.lbox{display:flex;align-items:center;gap:12px;margin-top:14px;color:var(--mute)}
/* v2 */
.muted{color:var(--mute);font-weight:400}h1 .muted{font-size:.6em}
.lang-es .tx,.lang-es .t,.lang-es .pw{font-family:Inter,system-ui,sans-serif}
.kn{display:flex;align-items:center;gap:8px;margin-top:10px;font-size:12px;color:var(--mute)}.kn .bar{flex:1;width:auto}
.new{font-size:12px;color:var(--acc);margin-top:6px}
.strip{display:grid;grid-template-columns:repeat(20,1fr);gap:2px;margin-top:12px}.strip i{aspect-ratio:1;border-radius:2px;background:var(--line)}
.strip.sm{grid-template-columns:repeat(20,8px);gap:2px;margin:0 0 4px}.stat.heat{display:flex;flex-direction:column;justify-content:center}
a.stat:hover{border-color:var(--acc)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(74px,1fr));gap:6px}
.tile{position:relative;border:1px solid var(--line);background:var(--card);border-radius:10px;padding:16px 4px 8px;min-height:58px;display:flex;align-items:center;justify-content:center;transition:transform .1s}
.tile:hover{transform:scale(1.06);z-index:1}.tile small{position:absolute;top:3px;left:6px;font-size:9px;color:var(--mute)}.tile span{font-size:15px;line-height:1.2;word-break:keep-all;text-align:center}
.tile.c{border-color:transparent;color:#fff;text-shadow:0 1px 2px #0004}.tile.c small{color:#fffc}
.legend{display:flex;flex-wrap:wrap;gap:10px;font-size:12px;color:var(--mute)}.legend i{display:inline-block;width:11px;height:11px;border-radius:3px;margin-right:4px;vertical-align:-1px}.legend i.g{background:var(--line)}
.sheet{position:fixed;inset:0;z-index:30;background:#0006;display:flex;align-items:flex-end;justify-content:center}
.sheet .sh{background:var(--card);width:min(560px,100%);max-height:85vh;overflow:auto;border-radius:20px 20px 0 0;padding:20px 20px calc(24px + env(safe-area-inset-bottom));position:relative}
@media (min-width:700px){.sheet{align-items:center}.sheet .sh{border-radius:20px}}
.sh .x{position:absolute;right:14px;top:12px;border:0;background:var(--line);width:32px;height:32px;border-radius:50%}
.pw.big{font-size:34px}.sh h3{font-size:14px;color:var(--mute);margin:20px 0 8px;text-transform:uppercase;letter-spacing:.05em}
.wstats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:14px}.wstats div{background:var(--bg);border-radius:10px;padding:8px;text-align:center}.wstats b{display:block;font-size:18px}.wstats span{font-size:11px;color:var(--mute)}
.ex{display:block;padding:10px 12px;border:1px solid var(--line);border-radius:12px;margin-bottom:8px}.ex:hover{border-color:var(--acc)}.tx.sm{font-size:18px;line-height:1.7}
.hlw{background:var(--hl);border-radius:4px;padding:0 3px;font-weight:600}
.pl{margin-top:8px;font-size:13px;border-top:1px solid var(--line);padding-top:8px}.dot2{display:inline-block;width:10px;height:10px;border-radius:50%;vertical-align:-1px;margin-left:4px}
.ck{margin-top:18px}.opt.right{border-color:hsl(120 50% 40%);background:hsl(120 50% 92%);color:#1b5e20}.opt.wrong{border-color:hsl(0 60% 50%);background:hsl(0 70% 95%);color:#8e1b1b}
body.sheet-open{overflow:hidden}
.sheet[hidden],.pop[hidden]{display:none}
.sh .pw{font-size:34px;font-weight:500;display:flex;align-items:center;gap:12px}.sh .pr{color:var(--acc);font-size:15px}.sh .pg{margin-top:6px;font-size:16px}
.sh .pa{border:0;background:var(--acc2);color:var(--acc);width:40px;height:40px;border-radius:50%;font-size:16px}
.lang-ko .sh .pw,.lang-ko .tile span,.lang-ko .hlw{font-family:"Noto Sans KR",sans-serif}.lang-ja .sh .pw,.lang-ja .tile span,.lang-ja .hlw{font-family:"Noto Sans JP",sans-serif}
.lang-es .tx{line-height:1.65;font-size:21px}
/* v3: tap card + inline English */
.qsh{padding-top:26px}.qsh .passage{margin-top:4px}
.fib{display:flex;gap:8px;margin-top:4px}.fib input{flex:1;min-width:0;font:inherit;font-size:17px;padding:12px 14px;border:1.5px solid var(--line);border-radius:12px;background:var(--bg);color:var(--ink)}.fib input:focus{outline:none;border-color:var(--acc)}
.big{border:1px solid var(--line);border-radius:12px;padding:12px 18px;font-size:16px;min-height:48px;background:var(--bg)}.big.primary{background:var(--acc);border-color:var(--acc);color:#fff;font-weight:600}.big.ghost{background:none;color:var(--mute);width:100%}
.qbtns{display:flex;gap:8px;margin-top:10px}.qbtns .primary{width:100%}
.opts.mc .opt{min-height:50px;font-size:16px}
.res{margin:12px 0 6px;font-weight:600;font-size:15px}.res.good{color:hsl(120 50% 32%)}.res.bad{color:hsl(0 60% 45%)}.ptsnow{color:var(--mute);font-weight:400}
.rv{margin-top:12px}.rv .pw{font-size:30px;font-weight:500;display:flex;align-items:center;gap:12px}.rv .pr{color:var(--acc);font-size:15px}.rv .pg{font-size:17px;margin-top:4px}
.rv .pa{border:0;background:var(--acc2);color:var(--acc);width:40px;height:40px;border-radius:50%}
.engtag{display:inline-block;margin-top:8px;font-size:12px;color:#b23c17;background:#fde9e1;border-radius:6px;padding:2px 8px}
.sm2{font-size:13px;margin:10px 0 0}.wstats{grid-template-columns:repeat(5,1fr)}
.w.eng{position:relative}
.w.eng::after{content:attr(data-en);position:absolute;left:50%;top:100%;transform:translate(-50%,-6px);font:600 10.5px/1.1 Inter,system-ui,sans-serif;color:#c2410c;white-space:nowrap;max-width:9em;overflow:hidden;text-overflow:ellipsis;pointer-events:none;letter-spacing:0}
.w.eng.sel::after{color:#fff}
.tx.roomy{line-height:2.45}.lang-es .tx.roomy{line-height:2.2}
@media (max-width:560px){.w.eng::after{font-size:10px;max-width:7em}}
@media (prefers-color-scheme:dark){.w.eng::after{color:#fb923c}.engtag{background:#3b1d12;color:#fb923c}}
.qsh{padding-top:54px}
.wm{font-weight:700;letter-spacing:-.02em}.brand .dot{background:conic-gradient(var(--acc) 0 70%,#e0a43a 0 85%,#d9534f 0)}
/* v5: green-in-sentence, solve */
.w.good{color:hsl(140 55% 30%);box-shadow:inset 0 -2px 0 hsl(140 50% 60% / .55)}
.w.good rt{color:hsl(140 35% 40%)}.w.good.sel{color:#fff;box-shadow:none}
@media (prefers-color-scheme:dark){.w.good{color:hsl(140 55% 65%);box-shadow:inset 0 -2px 0 hsl(140 50% 45% / .6)}}
.sacts{display:flex;flex-direction:column;align-items:center;gap:2px;flex:none}
.solve{border:1px solid var(--line);background:none;color:var(--mute);font-size:11px;border-radius:999px;padding:2px 8px;line-height:1.4}.solve:hover{color:var(--acc);border-color:var(--acc)}
.solvef{flex-direction:column}.solvef textarea{font:inherit;font-size:17px;padding:12px 14px;border:1.5px solid var(--line);border-radius:12px;background:var(--bg);color:var(--ink);resize:vertical}.solvef textarea:focus{outline:none;border-color:var(--acc)}
.yours,.refx{margin-top:10px;font-size:15px}.refx{padding:8px 12px;background:var(--bg);border-radius:10px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.wchip{border:1px solid var(--line);border-radius:999px;padding:6px 12px;background:var(--card);font-size:15px;min-height:38px}
.wchip.ok{border-color:hsl(140 45% 55%);background:hsl(140 50% 94%);color:hsl(140 55% 25%)}.wchip.ok small{opacity:.75;margin-left:4px}.wchip.miss{border-style:dashed}
.lang-ko .wchip,.lang-ko .passage{font-family:"Noto Sans KR",sans-serif}.lang-ja .wchip,.lang-ja .passage{font-family:"Noto Sans JP",sans-serif}
/* wordmark v3: geometric circled 'a' (variants: .wm-ring default, .wm-disc, .wm-min) */
.brand .dot{display:none}
.wm{font-family:"Inter Tight",Inter,system-ui,sans-serif;font-weight:600;letter-spacing:-.025em;font-feature-settings:"ss01" 0}
.ring-a{position:relative;display:inline-block;margin:0 .17em;line-height:1;z-index:0}
.ring-a svg{position:absolute;left:50%;bottom:.007em;width:.78em;height:.78em;transform:translateX(-50%);overflow:visible;pointer-events:none;z-index:-1}
.ring-a circle{fill:none}
.ring-a .rs{stroke:var(--acc);stroke-width:1.25;vector-effect:non-scaling-stroke;stroke-dasharray:1;stroke-dashoffset:0}
.ring-a .rf{fill:var(--acc);opacity:0}
.ring-a.draw .rs{animation:ringdraw .7s cubic-bezier(.65,0,.35,1) both}
@keyframes ringdraw{from{stroke-dashoffset:1}to{stroke-dashoffset:0}}
/* monogram: small solid accent square with rounded corners (variant A/B hide it) */
.mono{display:none;width:10px;height:10px;border-radius:3px;background:var(--acc);margin-right:-2px}
/* variant B: letter knocked out of a solid accent disc */
.wm-disc .ring-a{color:var(--bg);margin:0 .17em}.wm-disc .ring-a svg{width:.82em;height:.82em;bottom:-.013em}
.wm-disc .ring-a .rf{opacity:1}.wm-disc .ring-a .rs{stroke-width:1}
.wm-disc .ring-a.draw .rs{opacity:1;stroke-width:1.25;animation:ringdraw .7s cubic-bezier(.65,0,.35,1) both}
.wm-disc .ring-a.draw .rf{animation:discfill .85s cubic-bezier(.65,0,.35,1) both}
.wm-disc .ring-a.draw{animation:discink .85s cubic-bezier(.65,0,.35,1) both}
@keyframes discfill{0%,55%{opacity:0}100%{opacity:1}}
@keyframes discink{0%,55%{color:var(--ink)}100%{color:var(--bg)}}
/* variant C: no ring; accent 'a' + monogram square */
.wm-min .ring-a{margin:0;color:var(--acc)}.wm-min .ring-a svg{display:none}.brand.v-min .mono{display:block}
@media (prefers-reduced-motion:reduce){.wm .ring-a.draw,.wm .ring-a.draw .rs,.wm .ring-a.draw .rf{animation:none}.wm-disc .ring-a.draw .rs{opacity:0}}
/* conversations track */
.track{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px;counter-reset:none}
.track li{position:relative;display:flex}.track li .card{flex:1;padding-left:46px}
.track .num{position:absolute;left:12px;top:14px;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:700;background:var(--line);color:var(--mute);z-index:1;pointer-events:none}
.track li.done .num{background:hsl(140 45% 88%);color:hsl(140 55% 28%)}
.track li.next .num{background:var(--acc);color:#fff}.track li.next .card{border-color:var(--acc);box-shadow:0 0 0 1px var(--acc)}
/* running list ("Your words") after the top 100 */
.mine-h{display:flex;align-items:baseline;gap:10px;margin:22px 0 10px;padding-top:14px;border-top:1px solid var(--line)}
.mine-h span{font-weight:600;font-size:15px;white-space:nowrap}.mine-h small{color:var(--mute);font-size:12px}
.mine-empty{margin-top:18px}
/* say-the-word button on the tap card */
.qhead{position:relative}.qhead .passage{padding-right:52px}
.say{position:absolute;right:6px;top:50%;transform:translateY(-50%);border:0;background:var(--acc2);color:var(--acc);width:44px;height:44px;border-radius:50%;font-size:16px}
/* language switcher: pills on wide screens, compact menu on narrow ones */
#langnav .lpills{display:flex;gap:6px}
.lmenu{display:none;position:relative}
.lmenu summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;font-size:14px;color:var(--mute);box-shadow:inset 0 0 0 1px var(--line)}
.lmenu summary::-webkit-details-marker{display:none}.lmenu summary.on{background:var(--acc2);color:var(--acc);font-weight:600;box-shadow:none}
.lmenu summary svg{width:12px;height:12px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:transform .15s}.lmenu[open] summary svg{transform:rotate(180deg)}
.lpanel{position:absolute;right:0;top:calc(100% + 6px);min-width:190px;background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:0 10px 30px #0002;padding:6px;z-index:10}
.lpanel a{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 12px;border-radius:10px;min-height:44px;font-size:15px}
.lpanel a small{color:var(--mute);font-size:12px}.lpanel a:hover{background:var(--bg)}.lpanel a.on{background:var(--acc2);color:var(--acc);font-weight:600}
@media (max-width:899px){#langnav .lpills{display:none}.lmenu{display:block}}