:root{--b1:#38bdf8;--b2:#2563eb;--tx:#eaf4ff;--mut:#9db8d9;--gl:rgba(255,255,255,.08);--bd:rgba(255,255,255,.18);--ok:#34e0b4;--no:#ff7a90}
*{box-sizing:border-box;margin:0;font-family:'Segoe UI','Noto Sans KR','Apple SD Gothic Neo','Malgun Gothic',system-ui,sans-serif;-webkit-tap-highlight-color:transparent}
body{min-height:100vh;background:radial-gradient(120% 90% at 50% 0,#0b2a63,#06122b 70%);color:var(--tx);overflow-x:hidden}
.bg i{position:fixed;border-radius:50%;filter:blur(90px);opacity:.5;z-index:-1;animation:fl 16s ease-in-out infinite alternate}
.bg i:nth-child(1){width:520px;height:520px;background:#1d4ed8;top:-140px;left:-120px}
.bg i:nth-child(2){width:460px;height:460px;background:#0ea5e9;bottom:-140px;right:-100px;animation-delay:-6s}
.bg i:nth-child(3){width:340px;height:340px;background:#6366f1;top:40%;left:55%;animation-delay:-11s;opacity:.35}
@keyframes fl{to{transform:translate(110px,70px) scale(1.25)}}
.glass{background:var(--gl);border:1px solid var(--bd);backdrop-filter:blur(22px) saturate(170%);-webkit-backdrop-filter:blur(22px) saturate(170%);border-radius:26px;box-shadow:0 12px 40px rgba(0,20,90,.35),inset 0 1px 0 rgba(255,255,255,.15)}
.wrap{max-width:640px;margin:0 auto;padding:22px 18px 60px}
header,.top{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:26px}
.logo{font-size:26px;font-weight:800;letter-spacing:-.5px;background:linear-gradient(90deg,#7dd3fc,#60a5fa,#a5b4fc,#7dd3fc);background-size:300% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:sh 6s linear infinite}
@keyframes sh{to{background-position:300% 0}}
h2{font-size:20px;margin-bottom:16px;font-weight:700}h3{font-size:17px;font-weight:700}p{color:var(--mut);font-size:14px}
.ic{width:46px;height:46px;border-radius:16px;border:1px solid var(--bd);background:var(--gl);color:var(--tx);font-size:19px;cursor:pointer;backdrop-filter:blur(14px);transition:.3s}
.ic:hover{transform:rotate(18deg) scale(1.08);background:rgba(255,255,255,.16)}
.btn{border:0;border-radius:18px;padding:13px 24px;font-size:15px;font-weight:700;color:#fff;cursor:pointer;background:linear-gradient(135deg,var(--b1),var(--b2));box-shadow:0 8px 24px rgba(37,99,235,.45);transition:.25s;position:relative;overflow:hidden}
.btn:hover{transform:translateY(-3px) scale(1.03);box-shadow:0 14px 30px rgba(56,189,248,.5)}.btn:active{transform:scale(.96)}
.btn::after{content:'';position:absolute;inset:0;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.4) 50%,transparent 70%);transform:translateX(-120%);transition:.6s}.btn:hover::after{transform:translateX(120%)}
.btn.ghost{background:var(--gl);border:1px solid var(--bd);box-shadow:none}.btn.big{width:100%;padding:17px;font-size:17px}.btn:disabled{opacity:.5;pointer-events:none}
.fade,.sc,.unit{animation:up .6s cubic-bezier(.2,.9,.3,1.2) both}
.sc,.unit{animation-delay:calc(var(--d,0)*70ms)}
@keyframes up{from{opacity:0;transform:translateY(30px) scale(.94)}}
.secs{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.sc{padding:20px;cursor:pointer;transition:.35s;min-height:140px;display:flex;flex-direction:column;gap:6px}
.sc span{font-size:30px}.sc.lock{opacity:.4;cursor:not-allowed;filter:grayscale(.5)}
.sc.on{grid-column:span 2;background:linear-gradient(135deg,rgba(56,189,248,.25),rgba(37,99,235,.2));animation:up .6s both,pulse 3.5s ease-in-out infinite 1s}
.sc.on:hover{transform:translateY(-6px) scale(1.015)}
@keyframes pulse{50%{box-shadow:0 12px 60px rgba(56,189,248,.45),inset 0 1px 0 rgba(255,255,255,.2)}}
.bar{height:10px;border-radius:9px;background:rgba(255,255,255,.12);overflow:hidden;margin-top:8px;flex:1}
.bar i{display:block;height:100%;border-radius:9px;background:linear-gradient(90deg,var(--b1),#818cf8);transition:width .8s cubic-bezier(.2,.9,.3,1);box-shadow:0 0 14px var(--b1)}
.bar.big{margin:0}
.units{display:flex;flex-direction:column;gap:16px}
.unit{display:flex;align-items:center;gap:16px;padding:16px 18px;transition:.35s}
.unit.done,.unit.cur{cursor:pointer}.unit.done:hover,.unit.cur:hover{transform:translateX(6px) scale(1.02)}
.unit.lk{opacity:.4}
.unit.cur{background:linear-gradient(135deg,rgba(56,189,248,.28),rgba(99,102,241,.18));border-color:rgba(125,211,252,.6)}
.ring{--p:0;width:64px;height:64px;flex:none;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--b1) calc(var(--p)*1%),rgba(255,255,255,.14) 0)}
.ring span{width:52px;height:52px;border-radius:50%;background:#030a1c;display:grid;place-items:center;font-size:17px}
.unit.cur .ring{animation:bob 2.4s ease-in-out infinite}@keyframes bob{50%{transform:translateY(-6px)}}
.ut{flex:1;min-width:0}.ut p{margin-top:2px}
.run{display:flex;flex-direction:column;min-height:100vh}
.top .bar{margin:0}.cnt{font-weight:700;color:var(--mut);font-size:14px;min-width:42px;text-align:right}
.card{padding:28px 22px;animation:up .5s both}.card.center{text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px;padding:50px 20px}
.card.shake{animation:sk .5s}@keyframes sk{20%,60%{transform:translateX(-12px)}40%,80%{transform:translateX(12px)}}
.lab{margin-bottom:12px;font-weight:600}.big{font-size:26px;line-height:1.35;margin-bottom:22px}
textarea,input{width:100%;background:rgba(255,255,255,.07);border:1.5px solid var(--bd);border-radius:18px;color:var(--tx);padding:15px 17px;font-size:18px;outline:0;resize:none;transition:.25s}
textarea:focus,input:focus{border-color:var(--b1);box-shadow:0 0 0 4px rgba(56,189,248,.22);background:rgba(255,255,255,.11)}
textarea:disabled,input:disabled{opacity:.7}
.opts{display:flex;flex-direction:column;gap:12px}
.opt{padding:17px 20px;border-radius:18px;border:1.5px solid var(--bd);background:rgba(255,255,255,.06);color:var(--tx);font-size:18px;text-align:left;cursor:pointer;transition:.25s}
.opt:hover:not(:disabled){transform:translateX(6px);background:rgba(255,255,255,.14)}.opt.sel{border-color:var(--b1);background:rgba(56,189,248,.25);box-shadow:0 0 22px rgba(56,189,248,.35)}
.cards{display:flex;gap:12px;overflow-x:auto;padding:8px 2px 4px}
.col{flex:1;min-width:112px;display:flex;flex-direction:column;gap:10px}
.fc{height:118px;border-radius:20px;display:grid;place-items:center;text-align:center;padding:10px;font-size:19px;font-weight:700;background:linear-gradient(145deg,rgba(125,211,252,.35),rgba(37,99,235,.3));border:1px solid rgba(255,255,255,.3);box-shadow:0 10px 24px rgba(0,30,120,.4);animation:deal .6s cubic-bezier(.2,.9,.3,1.3) both}
.col:nth-child(2) .fc{animation-delay:.1s}.col:nth-child(3) .fc{animation-delay:.2s}.col:nth-child(4) .fc{animation-delay:.3s}
@keyframes deal{from{opacity:0;transform:translateY(-40px) rotate(-12deg)}}
.col input{font-size:16px;padding:12px;text-align:center}
.foot{margin-top:auto;padding-top:24px}
.fb{display:flex;flex-direction:column;gap:14px;padding:18px;border-radius:24px;animation:slide .45s cubic-bezier(.2,.9,.3,1.2) both;border:1px solid var(--bd);backdrop-filter:blur(20px)}
.fb.ok{background:rgba(52,224,180,.16);border-color:rgba(52,224,180,.5)}.fb.no{background:rgba(255,122,144,.15);border-color:rgba(255,122,144,.5)}
.fb.ok b{color:var(--ok)}.fb.no b{color:var(--no)}.fb b{font-size:19px}.fb p{color:var(--tx);margin-top:4px}
.fbb{display:flex;gap:10px}.fbb .btn{flex:1}
.exp{margin-top:10px;font-size:14px;line-height:1.6;white-space:pre-wrap;color:#d6e7ff;animation:up .4s both}
@keyframes slide{from{opacity:0;transform:translateY(60px)}}
.spin{width:44px;height:44px;border-radius:50%;border:4px solid rgba(255,255,255,.15);border-top-color:var(--b1);animation:rot .8s linear infinite}.spin.sm{width:24px;height:24px;border-width:3px}
@keyframes rot{to{transform:rotate(360deg)}}.fb:has(.spin){flex-direction:row;align-items:center}
.res{text-align:center;padding-top:40px}
.pr{--p:0;width:200px;height:200px;margin:20px auto;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--b1) calc(var(--p)*1%),rgba(255,255,255,.12) 0);box-shadow:0 0 60px rgba(56,189,248,.35)}
.pr div{width:166px;height:166px;border-radius:50%;background:#0a1d45;display:grid;place-items:center;font-size:44px;font-weight:800}
.pts{font-size:34px;font-weight:800;margin:6px 0;color:#7dd3fc}.res .btn{margin:8px 5px}
.cf{position:fixed;top:-20px;width:10px;height:16px;border-radius:3px;z-index:99;pointer-events:none;animation:fall linear forwards}
@keyframes fall{to{transform:translateY(110vh) rotate(720deg)}}
.ov{position:fixed;inset:0;background:rgba(2,10,30,.6);backdrop-filter:blur(8px);display:grid;place-items:center;padding:18px;z-index:50;animation:fi .3s}@keyframes fi{from{opacity:0}}
.pop{width:100%;max-width:420px;padding:26px;display:flex;flex-direction:column;gap:14px;animation:pp .45s cubic-bezier(.2,.9,.3,1.4)}@keyframes pp{from{opacity:0;transform:scale(.85) translateY(30px)}}
.row{display:flex;justify-content:space-between;padding:15px 17px;border-radius:16px;background:rgba(255,255,255,.07);border:1px solid var(--bd);cursor:pointer;transition:.25s}.row:hover{background:rgba(255,255,255,.15);transform:scale(1.02)}.row b{color:#7dd3fc}
.kw{display:none;gap:10px}.kw.open{display:flex;animation:up .4s both}.kw .btn{padding:0 20px}
.warn{color:#fcd34d}.pop a{color:#7dd3fc;font-size:14px;text-decoration:none}
.toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);z-index:99;padding:14px 22px;border-radius:16px;max-width:90vw;animation:up .4s both}
@media(max-width:480px){.big{font-size:22px}.secs{grid-template-columns:1fr}.sc.on{grid-column:auto}.unit{margin-left:0!important}}
@media(prefers-reduced-motion:reduce){*{animation-duration:.01s!important;transition-duration:.01s!important}}
.card{position:relative;overflow:hidden}.card.noanim,.noanim .fc,.fb.still{animation:none}.card.noanim.shake{animation:sk .5s}
.orb{position:relative;width:120px;height:120px;display:grid;place-items:center;margin-bottom:6px}
.orb::before{content:'';position:absolute;inset:-14px;border-radius:50%;background:radial-gradient(circle,rgba(56,189,248,.45),transparent 70%);animation:orbp 2s ease-in-out infinite}
.orb i{position:absolute;inset:0;border-radius:50%;border:3px solid transparent;border-top-color:var(--b1);animation:rot 1.4s linear infinite}
.orb i:nth-child(2){inset:12px;border-top-color:#818cf8;animation-duration:2s;animation-direction:reverse}.orb i:nth-child(3){inset:24px;border-top-color:#a5f3fc;animation-duration:2.6s}
.orb span{font-size:34px;font-weight:800;animation:orbp 1.1s ease-in-out infinite}@keyframes orbp{50%{transform:scale(1.2);text-shadow:0 0 24px var(--b1)}}
.sw{animation:swp .5s both}@keyframes swp{from{opacity:0;transform:translateY(8px)}}
.ind{width:100%;max-width:280px;height:6px;border-radius:6px;background:rgba(255,255,255,.12);overflow:hidden}.ind i{display:block;width:40%;height:100%;border-radius:6px;background:linear-gradient(90deg,transparent,var(--b1),transparent);animation:ind 1.3s ease-in-out infinite}@keyframes ind{from{transform:translateX(-100%)}to{transform:translateX(250%)}}
.skel{width:100%;max-width:320px;display:flex;flex-direction:column;gap:10px;margin-top:8px}.skel b{height:14px;border-radius:8px;background:linear-gradient(90deg,rgba(255,255,255,.07) 25%,rgba(255,255,255,.22) 50%,rgba(255,255,255,.07) 75%);background-size:200% 100%;animation:shm 1.4s linear infinite}.skel b:nth-child(2){width:80%}.skel b:nth-child(3){width:55%}@keyframes shm{to{background-position:-200% 0}}
.think{display:flex;gap:7px;padding:0 4px}.think i{width:12px;height:12px;border-radius:50%;background:var(--b1);box-shadow:0 0 14px var(--b1);animation:dot 1s ease-in-out infinite}.think i:nth-child(2){animation-delay:.15s;background:#818cf8}.think i:nth-child(3){animation-delay:.3s;background:#a5f3fc}
@keyframes dot{0%,100%{transform:translateY(0) scale(.7);opacity:.5}50%{transform:translateY(-10px) scale(1.15);opacity:1}}
.fb.gr{flex-direction:row;align-items:center;gap:16px;background:rgba(56,189,248,.12);border-color:rgba(125,211,252,.5);animation:slide .45s both,glow 1.6s ease-in-out infinite .5s}@keyframes glow{50%{box-shadow:0 0 36px rgba(56,189,248,.5)}}
.card.scan::after{content:'';position:absolute;top:0;bottom:0;width:45%;pointer-events:none;background:linear-gradient(100deg,transparent,rgba(125,211,252,.35),transparent);animation:scn 1.1s ease-in-out infinite}@keyframes scn{from{left:-50%}to{left:110%}}

/* ---------- glowing Hangul numerals, mobile and touch ---------- */
html{-webkit-text-size-adjust:100%}
body{touch-action:manipulation;overscroll-behavior-y:none;min-height:100dvh}
.wrap{padding:calc(22px + env(safe-area-inset-top)) max(18px,env(safe-area-inset-right)) calc(60px + env(safe-area-inset-bottom)) max(18px,env(safe-area-inset-left))}
.run{min-height:100dvh;padding-bottom:0}
.foot{position:sticky;bottom:var(--kb,0px);z-index:5;margin-top:auto;padding:22px 0 calc(12px + env(safe-area-inset-bottom));background:linear-gradient(to bottom,transparent,rgba(6,18,43,.92) 38%)}
.ic{display:grid;place-items:center;flex:none;padding:0}
.gn{font-weight:800;color:#eaf4ff;white-space:nowrap;letter-spacing:-.5px;line-height:1}
.sc .gn{display:grid;place-items:center;width:56px;height:56px;flex:none;border-radius:50%;background:#030a1c;box-shadow:inset 0 0 0 1px rgba(255,255,255,.1);font-size:17px}.ring .gn{font-size:17px}
.unit.lk .gn,.sc.lock .gn{opacity:.35}
.ring{position:relative}
.ck{position:absolute;right:-3px;bottom:-3px;width:22px;height:22px;border-radius:50%;background:linear-gradient(135deg,var(--ok),#22d3ee);box-shadow:0 0 14px var(--ok)}
.ck::after{content:'';position:absolute;left:8px;top:4px;width:5px;height:10px;border:solid #052b2b;border-width:0 2.5px 2.5px 0;transform:rotate(45deg)}
.ut h3{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pop{max-height:calc(100dvh - 36px);overflow:auto}
.toast{bottom:calc(26px + env(safe-area-inset-bottom))}
.fb{max-height:62dvh;overflow:auto}
@media(hover:none){
 .ic:hover,.btn:hover,.sc.on:hover,.unit.done:hover,.unit.cur:hover,.opt:hover:not(:disabled),.row:hover{transform:none}
 .btn:hover::after{transform:translateX(-120%)}
}
@media(max-width:600px){
 .bg i{filter:blur(60px)}
 .glass{-webkit-backdrop-filter:blur(14px) saturate(150%);backdrop-filter:blur(14px) saturate(150%)}
 .logo{font-size:23px}
 .card{padding:20px 16px}.big{font-size:22px;margin-bottom:16px}
 .cards{flex-wrap:wrap;overflow:visible}.col{flex:1 1 calc(50% - 6px);min-width:0}.fc{height:88px;font-size:17px}
 .unit{gap:12px;padding:14px}.unit .btn{padding:11px 16px}.ring{width:58px;height:58px}.ring span{width:47px;height:47px}
 .ov{place-items:start center;padding-top:max(18px,7dvh)}
 .fbb{flex-direction:column-reverse}
}

/* partial credit + length picker */
.fb.part{background:rgba(251,191,36,.14);border-color:rgba(251,191,36,.5)}.fb.part b{color:#fcd34d}
.col input.ok{border-color:var(--ok);background:rgba(52,224,180,.12)}.col input.no{border-color:var(--no);background:rgba(255,122,144,.12)}
.len{align-items:center;padding:18px 20px}.len span{display:flex;flex-direction:column;gap:2px}.len .lt{font-size:18px;font-weight:700;color:var(--tx)}.len small{color:var(--mut);font-size:13px}

/* header brand + logo */
.brand{display:flex;align-items:center;gap:11px;min-width:0}.brand img{width:40px;height:40px;flex:none;border-radius:11px;display:block}
@media(max-width:600px){.brand img{width:36px;height:36px}}

/* fixed Review button at the bottom of the home screen */
.wrap.hm{padding-bottom:calc(128px + env(safe-area-inset-bottom))}
#rvbar{position:fixed;left:0;right:0;bottom:0;z-index:20;display:flex;justify-content:center;pointer-events:none;padding:34px max(18px,env(safe-area-inset-right)) calc(14px + env(safe-area-inset-bottom)) max(18px,env(safe-area-inset-left));background:linear-gradient(to bottom,transparent,rgba(6,18,43,.94) 60%)}
#rvbar:empty{display:none}
.rvb{pointer-events:auto;max-width:604px;display:flex;flex-direction:column;align-items:center;gap:2px;padding:12px 20px}.rvb b{font-size:17px}.rvb small{font-size:12px;font-weight:600;opacity:.85}

/* unit buttons: Read + Test */
.ub{display:flex;gap:8px;flex:none}
@media(max-width:600px){.ub{flex-direction:column;gap:7px}.unit .ub .btn{padding:9px 14px;font-size:14px}.ut h3{white-space:normal;line-height:1.2}}

/* Read page */
.rd h2.rdt{font-size:26px;margin-bottom:14px}.rd h2.sh{margin:26px 0 12px}
.rs{padding:20px 18px;margin-bottom:14px;animation:up .6s cubic-bezier(.2,.9,.3,1.2) both;animation-delay:calc(var(--d,0)*60ms)}
.rs h3{margin-bottom:8px}.rs p{color:#cfe2fb;line-height:1.65;font-size:15px;margin-bottom:8px}
.kr{color:#7dd3fc;font-weight:700}
.exl{display:flex;flex-direction:column;gap:8px;margin-top:12px}
.exl>div{display:flex;flex-direction:column;gap:2px;padding:10px 14px;border-radius:14px;background:rgba(255,255,255,.06);border:1px solid var(--bd)}
.exl .k{font-size:19px;font-weight:700;color:var(--tx)}.exl .e{font-size:14px;color:var(--mut)}
.exl .who{font-size:12px;font-weight:700;color:#7dd3fc;letter-spacing:.4px}
.tip{margin-top:12px;padding:12px 14px;border-left:3px solid var(--b1);background:rgba(56,189,248,.1);border-radius:0 14px 14px 0;font-size:14px;line-height:1.6;color:#d6e7ff}
.vt{width:100%;border-collapse:collapse}.vt th{text-align:left;font-size:12px;letter-spacing:.5px;text-transform:uppercase;color:var(--mut);padding:0 8px 8px}
.vt td{padding:10px 8px;border-top:1px solid var(--bd);font-size:15px;color:#d6e7ff;vertical-align:top}.vt td.k{font-size:18px;font-weight:700;color:var(--tx);white-space:nowrap;padding-right:14px}
.rdf{margin-top:22px}

/* ---------- restructure: progress menu, Read pill, word lists, speaker buttons ---------- */
.hr{display:flex;align-items:center;gap:10px;flex:none}
.pill{border:1px solid var(--bd);background:var(--gl);color:var(--tx);border-radius:999px;padding:10px 16px;font-size:14px;font-weight:700;cursor:pointer;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);white-space:nowrap;transition:.25s}
.pill:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.seg{display:flex;gap:4px;padding:5px;margin-bottom:22px;border-radius:999px;background:var(--gl);border:1px solid var(--bd);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.seg button{flex:1;border:0;background:transparent;color:var(--mut);font-size:15px;font-weight:700;padding:10px 14px;border-radius:999px;cursor:pointer;transition:.25s}
.seg button.on{background:linear-gradient(135deg,var(--b1),var(--b2));color:#fff;box-shadow:0 6px 18px rgba(37,99,235,.4)}
.nw{font-style:italic}
.note{font-size:13px;margin-top:12px}
.pg-intro{margin:-6px 0 18px}
.rd h2.alpha{margin:24px 0 10px;color:#7dd3fc;font-size:18px}
.wlist{padding:6px 16px;margin-bottom:6px}
.wl{display:grid;grid-template-columns:minmax(76px,auto) 1fr auto;gap:12px;align-items:baseline;padding:11px 0}
.wl+.wl{border-top:1px solid var(--bd)}
.wk{font-size:18px;font-weight:700;color:var(--tx);white-space:nowrap}
.we{font-size:15px;color:#d6e7ff;min-width:0}
.wl small{font-size:12px;color:var(--mut);white-space:nowrap}
.row>span{display:flex;flex-direction:column;gap:2px}
.row .lt{font-size:17px;font-weight:700;color:var(--tx)}
.row small{font-size:13px;color:var(--mut)}
.rvx{font-size:13px}
.say-row{display:flex;align-items:center;gap:12px;margin-bottom:22px}
.say-row .big{margin-bottom:0;flex:1;min-width:0}
.mic{flex:none;width:46px;height:46px;border-radius:50%;border:1px solid var(--bd);background:var(--gl);color:var(--b1);display:grid;place-items:center;padding:0;cursor:pointer;transition:.25s}
.mic:hover{background:rgba(255,255,255,.16);transform:scale(1.07)}.mic:active{transform:scale(.92)}
.mic.sm{width:32px;height:32px;display:inline-grid;vertical-align:middle;margin-left:4px}
.mic.sm svg{width:16px;height:16px}
.mic.talk{animation:talk .7s ease}@keyframes talk{40%{box-shadow:0 0 0 10px rgba(56,189,248,.28)}}
.optrow{display:flex;align-items:center;gap:10px}.optrow .opt{flex:1;min-width:0}
.ansrow{display:flex;flex-wrap:wrap;align-items:center;gap:4px 6px}
.ansrow .sep{color:var(--mut)}
@media(max-width:600px){.say-row .big{font-size:22px}}

/* explanation windows (choice: right/wrong; flashcards: notes) and microphones in See words */
.exp.win{white-space:normal;margin-top:4px;padding:13px 15px;border-radius:16px;background:rgba(255,255,255,.08);border:1px solid var(--bd);animation:up .4s both}
.exp.win b{display:block;font-size:12px;letter-spacing:.5px;text-transform:uppercase;color:#7dd3fc;margin-bottom:5px}
.exp.win.good{border-color:rgba(52,224,180,.45);background:rgba(52,224,180,.1)}.exp.win.good b{color:var(--ok)}
.exp.win.bad{border-color:rgba(255,122,144,.45);background:rgba(255,122,144,.09)}.exp.win.bad b{color:var(--no)}
.wl{grid-template-columns:auto minmax(76px,auto) 1fr auto;align-items:center}
.mslot{display:flex;align-items:center;justify-content:center;min-width:32px}
.mslot .mic.sm{margin:0}

/* smaller microphones, placed in front of the Korean text */
.say-row{gap:8px}
.mic{width:26px;height:26px;margin:0}
.mic svg{width:14px;height:14px}
.mic.sm{width:22px;height:22px;margin:0;display:inline-grid;vertical-align:middle}
.mic.sm svg{width:12px;height:12px}
.optrow{gap:8px}
.ansrow{gap:4px 4px}

/* Equal-sized flashcard deck: only the top edges of cards behind the front are visible. */
.stack-wrap{margin:8px 0 20px;text-align:center}
.stack-count{font-size:13px;color:var(--mut);margin-bottom:4px}
.flash-stack{height:238px;position:relative;width:min(100%,360px);margin:0 auto 12px;overflow:visible;isolation:isolate}
.stack-card{position:absolute;top:74px;left:6%;width:88%;height:160px;box-sizing:border-box;border-radius:21px;border:1px solid rgba(255,255,255,.34);background:linear-gradient(145deg,#24558d,#193967);box-shadow:0 9px 22px rgba(0,12,40,.28)}
.stack-card.stack-back{filter:brightness(.84);transition:transform .26s cubic-bezier(.2,.75,.25,1)}
.stack-card.stack-front{z-index:100;display:grid;place-items:center;padding:20px;background:linear-gradient(145deg,#397eb9,#24538e);font-size:25px;line-height:1.25;font-weight:750;color:#fff;text-align:center;box-shadow:0 12px 28px rgba(0,12,40,.38);animation:card-arrive .3s ease-out both}
.flash-stack.advance .stack-back{transform:translateY(14px)}
.stack-card.stack-front.stack-leave{animation:card-leave .25s cubic-bezier(.4,0,.8,.4) forwards}
@keyframes card-arrive{from{opacity:.65;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}
@keyframes card-leave{to{opacity:0;transform:translate(-55px,-8px) rotate(-4deg)}}
.flash-results{display:flex;flex-direction:column;gap:9px}
.flash-result{display:grid;grid-template-columns:25px minmax(75px,1fr) minmax(70px,1fr) auto;align-items:center;gap:9px;padding:11px 12px;border-radius:13px;font-size:14px}
.flash-result.right{background:rgba(52,224,180,.13);border:1px solid rgba(52,224,180,.4);color:#9cf2d6}
.flash-result.wrong{background:rgba(255,122,144,.13);border:1px solid rgba(255,122,144,.4);color:#ffb2c0}
.fr-mark{font-size:19px;font-weight:800}.fr-answer{overflow-wrap:anywhere;color:var(--tx)}.fr-correct{font-weight:700;color:#ffb2c0;white-space:nowrap}
@media(max-width:600px){.flash-stack{height:232px}.stack-card{height:154px}.flash-result{grid-template-columns:22px minmax(65px,1fr) minmax(60px,1fr);gap:7px;padding:10px 8px;font-size:13px}.fr-correct{grid-column:3;white-space:normal}}
@media(prefers-reduced-motion:reduce){.stack-card,.stack-card.stack-front,.stack-card.stack-front.stack-leave{animation:none!important;transition:none!important}.flash-stack.advance .stack-back{transform:translateY(14px)}}