:root{
  color-scheme:light;
  --ink:#18302b;--muted:#66756f;--paper:#f3f0e8;--card:#fffdf7;--card2:#ece8dd;
  --forest:#173c35;--moss:#2f6b5c;--mint:#b9dfcf;--sun:#f2c86b;--coral:#d95f42;
  --line:rgba(24,48,43,.13);--shadow:0 16px 38px rgba(25,43,38,.09);
  --radius:22px;--safe:env(safe-area-inset-bottom,0px)
}
:root.dark{color-scheme:dark;--ink:#edf5ef;--muted:#9cacaa;--paper:#0d1816;--card:#132420;
  --card2:#1b302b;--forest:#d3efe3;--moss:#75bda8;--mint:#214d42;--sun:#edc667;
  --coral:#f07a5d;--line:rgba(226,244,235,.12);--shadow:0 18px 42px rgba(0,0,0,.28)}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--paper);color:var(--ink)}
body{font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  -webkit-font-smoothing:antialiased;background-image:radial-gradient(circle at 5% 0%,rgba(242,200,107,.19),transparent 31%),radial-gradient(circle at 96% 8%,rgba(47,107,92,.12),transparent 34%)}
button,input{font:inherit;color:inherit}button{cursor:pointer}.shell{width:min(100%,760px);margin:auto;padding:20px 18px calc(34px + var(--safe))}
button{transition:transform .16s ease,border-color .16s ease,background .16s ease}button:hover{border-color:rgba(47,107,92,.42)}button:focus-visible,input:focus-visible{outline:3px solid rgba(242,200,107,.7);outline-offset:2px}
.top{display:flex;align-items:center;gap:13px;margin-bottom:20px}.brand{flex:1}.brand b{font-size:21px;letter-spacing:-.5px}
.brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:1.8px;text-transform:uppercase;margin-top:2px}
.roundBtn{width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:var(--card);box-shadow:0 7px 20px rgba(25,43,38,.07)}
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#173c35,#275b50);color:#f9fff9;border-radius:30px;padding:25px;box-shadow:0 22px 55px rgba(18,53,46,.19)}
.hero:after{content:"å";position:absolute;right:-12px;bottom:-42px;font-family:Georgia,serif;font-size:180px;color:rgba(255,255,255,.07)}
.eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:2px;color:#bee1d3;font-weight:800}
.hero h1{margin:8px 0 7px;font-family:Georgia,"Times New Roman",serif;font-size:36px;font-weight:500;letter-spacing:-1px}
.hero p{margin:0;color:#d5e7e0;line-height:1.55;font-size:14px;max-width:520px}
.meter{height:9px;background:rgba(255,255,255,.12);border-radius:20px;overflow:hidden;margin:20px 0 10px}.meter i{height:100%;display:block;background:linear-gradient(90deg,#f2c86b,#f6e3a9);border-radius:inherit}
.heroStats{display:flex;gap:19px;font-size:12px;color:#d5e7e0}.heroStats b{display:block;color:#fff;font-size:17px;margin-bottom:1px}
.sectionHead{display:flex;align-items:end;justify-content:space-between;margin:25px 3px 12px}.sectionHead h2{font-size:18px;margin:0}.sectionHead span{font-size:12px;color:var(--muted)}
.actionGrid{display:grid;gap:11px}.action{display:grid;grid-template-columns:48px 1fr auto;gap:13px;align-items:center;width:100%;text-align:left;padding:16px;border:1px solid var(--line);border-radius:20px;background:var(--card);box-shadow:var(--shadow)}
.action.primary{background:linear-gradient(135deg,#fff9e9,var(--card));border-color:rgba(217,95,66,.26)}:root.dark .action.primary{background:linear-gradient(135deg,#26382f,var(--card))}
.action:active{transform:translateY(2px)}.action .ico{display:grid;place-items:center;width:48px;height:48px;border-radius:15px;background:var(--card2);font-size:22px}.action.primary .ico{background:#f8df9d;color:#493914}
.action b{font-size:15px}.action p{margin:3px 0 0;color:var(--muted);font-size:12px;line-height:1.4}.arrow{font-size:20px;color:var(--muted)}
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:11px}.miniCard{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:16px;min-height:118px;box-shadow:var(--shadow)}
.miniCard .label{color:var(--muted);font-size:11px}.miniCard strong{display:block;font-size:28px;margin:8px 0 5px}.miniCard p{margin:0;color:var(--muted);font-size:12px;line-height:1.4}
.miniCard{display:block;width:100%;text-align:left}.more{margin-top:11px}
.screenHead{display:flex;align-items:center;gap:12px;margin-bottom:18px}.back{width:42px;height:42px;border-radius:14px;border:1px solid var(--line);background:var(--card)}.screenHead h1{font-size:21px;margin:0}.screenHead p{margin:3px 0 0;color:var(--muted);font-size:12px}
.lesson{min-height:72vh;display:flex;flex-direction:column}.lessonTop{display:flex;align-items:center;gap:10px}.lessonTop .track{flex:1;height:7px;border-radius:10px;background:var(--card2);overflow:hidden}.lessonTop .track i{display:block;height:100%;background:var(--moss)}
.pill{border:1px solid var(--line);border-radius:99px;padding:6px 10px;font-size:11px;color:var(--muted);background:var(--card)}
.promptCard{flex:1;display:flex;flex-direction:column;justify-content:center;text-align:center;padding:24px 8px}.tag{font-size:11px;letter-spacing:1.6px;text-transform:uppercase;color:var(--moss);font-weight:900}.no{font-family:Georgia,"Times New Roman",serif;font-size:clamp(30px,8vw,48px);line-height:1.2;margin:15px auto 8px;max-width:650px}.zh{font-size:17px;color:var(--muted);line-height:1.6}.note{margin:14px auto 0;max-width:560px;padding:11px 14px;border-radius:14px;background:var(--card2);font-size:12px;color:var(--muted);line-height:1.55}
.speak{display:inline-flex;align-items:center;gap:8px;margin:20px auto 0;border:1px solid var(--line);background:var(--card);border-radius:99px;padding:10px 17px;font-weight:800}.speak.slow{margin-left:7px;color:var(--muted)}
.listenOrb{display:grid;place-items:center;margin:26px auto 11px;width:112px;height:112px;border:0;border-radius:50%;background:linear-gradient(145deg,var(--moss),var(--forest));color:var(--paper);font-size:31px;box-shadow:0 20px 45px rgba(23,60,53,.24)}
.answers{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:auto}.answer{min-height:62px;border-radius:17px;border:1px solid var(--line);background:var(--card);padding:12px;font-weight:750}.answer.good{border-color:#52a487;background:rgba(82,164,135,.16)}.answer.bad{border-color:var(--coral);background:rgba(217,95,66,.12)}
.footerActions{display:flex;gap:10px;margin-top:12px}.btn{width:100%;border:0;border-radius:17px;background:var(--forest);color:var(--paper);padding:15px;font-weight:850}.btn.secondary{background:var(--card2);color:var(--ink)}.btn.warn{background:var(--coral);color:white}.btn:disabled{opacity:.45}
.feedback{text-align:center;min-height:29px;margin:10px 0;font-size:13px;font-weight:800}.feedback.ok{color:var(--moss)}.feedback.nope{color:var(--coral)}
.libraryTools{display:flex;gap:9px;margin-bottom:13px}.search{width:100%;border:1px solid var(--line);background:var(--card);border-radius:16px;padding:13px 15px;outline:none}.search:focus{border-color:var(--moss)}
.list{display:grid;gap:9px}.row{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:17px;padding:14px}.row b{font-size:16px}.row p{margin:4px 0 0;color:var(--muted);font-size:12px}.row small{color:var(--muted)}
.unit{margin-bottom:10px}.unit button{width:100%;display:flex;align-items:center;gap:12px;text-align:left;border:1px solid var(--line);background:var(--card);border-radius:18px;padding:15px}.unit .num{display:grid;place-items:center;width:42px;height:42px;background:var(--mint);border-radius:13px;font-weight:900}.unit .ut{flex:1}.unit .ut b{display:block}.unit .ut small{color:var(--muted)}
.dialogue{display:grid;gap:10px;margin:18px 0}.bubble{max-width:86%;padding:13px 15px;border-radius:18px;background:var(--card);border:1px solid var(--line);line-height:1.5}.bubble.you{justify-self:end;background:var(--mint)}.bubble small{display:block;color:var(--muted);margin-top:4px}
.dialogueRow{width:100%;text-align:left}.dialogueRow b{display:block;margin-top:3px}.bubble{text-align:left}.productionPrompt{font-size:25px;margin-top:25px;color:var(--ink)}.answerNo{margin-top:30px}.reveal{max-width:420px;margin:36px auto 0}.rating{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;margin-top:28px}.rating button{border:1px solid var(--line);border-radius:15px;background:var(--card);padding:12px 4px;font-weight:850}.rating small{display:block;color:var(--muted);font-size:9px;margin-top:4px}.speechResult{min-height:22px;margin:16px auto 0;max-width:560px;font-size:13px;line-height:1.55;color:var(--muted)}
.settingsGroup{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:16px;margin-bottom:12px}.settingsGroup h2{font-size:15px;margin:0 0 12px}.settingRow{display:flex;align-items:center;gap:12px;margin:10px 0}.settingRow label{flex:1}.settingRow small{display:block;color:var(--muted);margin-top:2px}.seg{display:flex;gap:7px}.seg button{border:1px solid var(--line);background:var(--card2);padding:9px 12px;border-radius:12px}.seg button.on{background:var(--forest);color:var(--paper)}
.code{font-family:ui-monospace,SFMono-Regular,monospace;letter-spacing:2px;font-size:20px}.empty{text-align:center;color:var(--muted);padding:45px 10px}.toast{position:fixed;left:50%;bottom:calc(24px + var(--safe));transform:translate(-50%,18px);background:#142723;color:white;padding:11px 17px;border-radius:99px;font-size:12px;opacity:0;pointer-events:none;transition:.22s;z-index:20}.toast.on{opacity:1;transform:translate(-50%,0)}
.muted{color:var(--muted);font-size:13px;line-height:1.55}.danger{border-color:rgba(217,95,66,.25)}.complete{text-align:center;padding:30px 0}.complete h1{font-family:Georgia,serif;font-size:35px;font-weight:500}.complete>p{color:var(--muted);line-height:1.7;max-width:590px;margin:0 auto 25px}.completeMark{display:grid;place-items:center;width:76px;height:76px;margin:12px auto 20px;border-radius:50%;background:var(--mint);font-size:34px;color:var(--forest)}.complete>.btn{margin-top:18px}.progressHero{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:22px;margin-bottom:12px}.progressHero h1{font-family:Georgia,serif;font-weight:500;font-size:31px;margin:8px 0}.progressHero p,.method p{color:var(--muted);line-height:1.65;margin:0}.progressCards{margin:12px 0}.skillBars,.method{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:17px}.skillBars>div{display:grid;grid-template-columns:58px 1fr 35px;gap:10px;align-items:center;margin:13px 0;font-size:12px}.skillBars i{height:9px;background:var(--card2);border-radius:9px;overflow:hidden}.skillBars b{display:block;height:100%;background:var(--moss)}.method{margin-top:12px}.method h2{font-size:16px;margin:0 0 7px}
@media(min-width:620px){.actionGrid{grid-template-columns:1fr 1fr}.action.primary{grid-column:1/-1}.cards{grid-template-columns:repeat(4,1fr)}}
@media(max-width:380px){.shell{padding-inline:12px}.hero{padding:21px}.hero h1{font-size:31px}.answers{grid-template-columns:1fr}}
@media(max-width:520px){.rating{grid-template-columns:1fr 1fr}.speak.slow{margin-left:0}.progressCards{grid-template-columns:1fr 1fr}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}