:root{--p:#5457e8;--p2:#7f82ff;--bg:#f4f6ff;--card:#fff;--text:#1f2440;--muted:#747b98;--good:#23b47e;--warn:#ffb545;--shadow:0 12px 30px rgba(40,48,110,.13)}
*{box-sizing:border-box}body{margin:0;background:linear-gradient(#eef1ff,#fbfcff);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif}
button{font:inherit}.loading{padding:40px;text-align:center}.shell{max-width:1120px;margin:auto;min-height:100vh;padding:env(safe-area-inset-top) 14px calc(94px + env(safe-area-inset-bottom))}
.top{display:flex;align-items:center;justify-content:space-between;padding:18px 3px 12px}.brand{font-weight:850;font-size:24px}.pill{background:#fff;padding:9px 13px;border-radius:99px;box-shadow:var(--shadow)}
.hero{background:linear-gradient(135deg,var(--p),var(--p2));color:#fff;padding:24px;border-radius:28px;box-shadow:var(--shadow)}.hero h1{margin:0 0 7px;font-size:31px}.hero p{margin:0;opacity:.92}
.section{font-size:20px;margin:23px 4px 12px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.card{border:0;background:#fff;border-radius:22px;padding:18px;text-align:left;min-height:132px;box-shadow:var(--shadow)}
.card .e{font-size:36px}.card h3{margin:10px 0 5px}.card p{margin:0;color:var(--muted);font-size:14px}.bottom{position:fixed;left:0;right:0;bottom:0;background:rgba(255,255,255,.94);backdrop-filter:blur(18px);border-top:1px solid #e5e8f4;padding:8px 8px calc(8px + env(safe-area-inset-bottom));z-index:30}
.nav{max-width:780px;margin:auto;display:grid;grid-template-columns:repeat(5,1fr);gap:4px}.nav button{border:0;background:transparent;color:var(--muted);padding:7px 2px;border-radius:14px;font-size:11px}.nav button span{display:block;font-size:23px}.nav button.active{background:#eef0ff;color:var(--p)}
.head{display:flex;align-items:center;gap:10px;margin:8px 0 14px}.back{border:0;background:#fff;padding:10px 13px;border-radius:14px;box-shadow:var(--shadow)}.levels{display:flex;gap:8px;overflow:auto;padding:2px 2px 13px}
.chip{border:0;background:#fff;padding:10px 14px;border-radius:99px;white-space:nowrap;box-shadow:0 5px 15px rgba(40,48,110,.08)}.chip.active{background:var(--p);color:#fff}
.lesson{display:flex;gap:13px;align-items:center;background:#fff;padding:15px;border-radius:20px;box-shadow:var(--shadow);margin-bottom:11px}.lesson .big{font-size:34px}.grow{flex:1}.lesson h3{margin:0 0 4px}.lesson p{margin:0;color:var(--muted);font-size:13px}
.panel{background:#fff;border-radius:24px;padding:18px;box-shadow:var(--shadow);margin-bottom:14px}.word-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.word{border:0;background:#f7f8ff;padding:15px 9px;border-radius:17px;text-align:center}.word .pic{font-size:36px}.word b,.word small{display:block}.word small{color:var(--muted)}
.controls{display:flex;gap:9px;flex-wrap:wrap;margin-top:12px}.primary,.secondary{border:0;border-radius:15px;padding:12px 16px;font-weight:750}.primary{background:var(--p);color:#fff}.secondary{background:#eef0ff;color:var(--p)}
.line{padding:12px;border-radius:15px;margin:8px 0;background:#f6f7ff}.teacher{border-left:5px solid var(--p)}.student{border-left:5px solid var(--warn)}.note{font-size:13px;color:var(--muted)}
.quiz{width:100%;border:1px solid #e2e6f4;background:#fff;padding:13px;border-radius:14px;margin:7px 0;text-align:left}.progress{height:10px;background:#e7eaf5;border-radius:99px;overflow:hidden}.progress i{height:100%;display:block;background:var(--good)}
.status{padding:10px 12px;background:#f7f8ff;border-radius:14px;color:var(--muted);font-size:13px}
@media(min-width:720px){.shell{padding-left:24px;padding-right:24px}.grid{grid-template-columns:repeat(3,1fr)}.word-grid{grid-template-columns:repeat(4,1fr)}.hero{padding:32px}.hero h1{font-size:40px}}

.speaking-lab{margin-top:16px;padding:15px;border-radius:18px;background:#f4f6ff}button:disabled{opacity:.45}
.score-card{background:#f7f8ff;border-radius:18px;padding:14px}.score-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;margin:12px 0}
.score-grid div{background:white;border-radius:14px;padding:10px 4px;text-align:center}.score-grid strong{display:block;font-size:24px;color:var(--p)}.score-grid span{font-size:11px;color:var(--muted)}
@media(max-width:390px){.score-grid{grid-template-columns:repeat(2,1fr)}}

.qa{background:#f6f7ff;border-radius:14px;padding:12px;margin:9px 0}
.qa summary{font-weight:750;cursor:pointer}
.qa p{color:var(--muted);margin-bottom:0}

.top-stats{display:flex;gap:7px}.game-grid{margin-top:16px}.game-stage{text-align:center}.game-emoji{font-size:92px;margin:12px}.big-play{font-size:20px;padding:17px 26px}
.text-input{width:100%;font:inherit;font-size:20px;padding:13px;border:2px solid #dfe3f3;border-radius:14px;margin:10px 0}
.built-zone{min-height:58px;border:2px dashed #cbd0ec;border-radius:16px;padding:15px;font-size:20px;margin:12px 0}.word-bank{display:flex;gap:8px;flex-wrap:wrap}
.memory-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px}.memory-card{min-height:88px;border:0;border-radius:16px;background:#5457e8;color:transparent;font-size:22px}
.memory-card span{visibility:hidden}.memory-card.open,.memory-card.matched{background:#f3f4ff;color:var(--text)}.memory-card.open span,.memory-card.matched span{visibility:visible}.memory-card.matched{outline:3px solid #23b47e}
.teacher-chat{display:grid;gap:12px}.teacher-bubble,.student-bubble{padding:15px;border-radius:18px;line-height:1.5}.teacher-bubble{background:#eef0ff;margin-right:12%}.student-bubble{background:#fff4dc;margin-left:12%}.mini-audio{border:0;background:transparent}
.badge-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.badge-card{background:white;border-radius:20px;padding:16px;text-align:center;box-shadow:var(--shadow)}.badge-card.locked{filter:grayscale(1);opacity:.55}.badge-icon{font-size:44px}
.dashboard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin-bottom:14px}.metric{background:white;border-radius:18px;padding:14px 5px;text-align:center;box-shadow:var(--shadow)}.metric strong{display:block;font-size:25px;color:var(--p)}.metric span{font-size:12px;color:var(--muted)}
.karaoke{font-size:22px;line-height:1.75;margin-bottom:14px}.karaoke span{border-radius:5px;padding:1px}.karaoke-on{background:#ffdd78;color:#1f2440}.tempo{width:100%;margin:12px 0}
@media(max-width:520px){.top-stats{gap:3px}.top-stats .pill{font-size:12px;padding:8px}.memory-grid{grid-template-columns:repeat(2,1fr)}.dashboard-grid{grid-template-columns:repeat(2,1fr)}}

:root[data-theme="dark"]{--bg:#111528;--card:#1c2238;--text:#f4f6ff;--muted:#aeb5d0;--shadow:0 12px 30px rgba(0,0,0,.28)}
:root[data-theme="dark"] body{background:linear-gradient(#101425,#181e32)}
:root[data-theme="dark"] .card,:root[data-theme="dark"] .panel,:root[data-theme="dark"] .lesson,:root[data-theme="dark"] .metric,:root[data-theme="dark"] .badge-card,:root[data-theme="dark"] .bottom{background:var(--card)}
:root[data-theme="dark"] .word,:root[data-theme="dark"] .line,:root[data-theme="dark"] .score-card,:root[data-theme="dark"] .speaking-lab{background:#242b45}
.commercial-hero{background:linear-gradient(135deg,#4e55e8,#7c68f6);color:#fff;border-radius:30px;padding:24px;box-shadow:var(--shadow)}
.hero-profile{display:flex;align-items:center;gap:14px}.avatar{width:64px;height:64px;background:#fff;border-radius:22px;display:grid;place-items:center;font-size:37px}
.eyebrow{font-size:11px;font-weight:800;letter-spacing:1.3px;margin:0 0 3px;opacity:.78}.commercial-hero h1{margin:0 0 5px}
.mission-card{margin-top:18px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.2);border-radius:20px;padding:14px;display:flex;align-items:center;justify-content:space-between}
.mission-card p{margin:4px 0 0;opacity:.9;font-size:13px}.mission-ring{width:58px;height:58px;border:5px solid rgba(255,255,255,.45);border-top-color:#fff;border-radius:50%;display:grid;place-items:center;font-weight:800}
.avatar-row{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 16px}.avatar-choice{border:2px solid transparent;background:#f4f6ff;border-radius:15px;font-size:28px;padding:9px}.avatar-choice.selected{border-color:var(--p)}.selected-mode{outline:3px solid rgba(84,87,232,.25)}label{display:block;font-weight:700;margin-top:10px}

.pro-hero{position:relative;overflow:hidden}.pro-hero:after{content:"";position:absolute;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.08);right:-90px;top:-110px}
.hero-kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin-top:18px}.hero-kpis div{background:rgba(255,255,255,.12);border-radius:16px;padding:11px;text-align:center}.hero-kpis strong{display:block;font-size:23px}.hero-kpis span{font-size:11px;opacity:.85}
.quick-strip{display:flex;gap:9px;overflow:auto;padding:14px 1px 2px}.quick-strip button{border:0;background:#fff;color:var(--text);box-shadow:0 6px 18px rgba(40,48,110,.09);border-radius:999px;padding:11px 15px;white-space:nowrap;font-weight:700}
.status-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin-bottom:14px}.status-card{background:#fff;border-radius:18px;padding:15px;text-align:center;box-shadow:var(--shadow);border-top:5px solid #9ba2bd}.status-card.ok{border-top-color:#23b47e}.status-card.warn{border-top-color:#ffb545}.status-card.bad{border-top-color:#ef5b5b}.status-card strong,.status-card span{display:block}.status-card span{font-size:12px;color:var(--muted);margin-top:4px}
.goal-row{display:flex;gap:8px;flex-wrap:wrap}.goal-choice{border:0;background:#eef0ff;color:var(--p);padding:11px 14px;border-radius:14px;font-weight:700}.goal-choice.selected{background:var(--p);color:#fff}
.connection-pill{min-width:80px}
@media(max-width:620px){.hero-kpis{grid-template-columns:repeat(3,1fr)}.status-grid{grid-template-columns:repeat(2,1fr)}.connection-pill{display:none}}

.practice-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:9px;margin-bottom:15px}
.practice-choice{border:2px solid transparent;background:#f5f6ff;border-radius:16px;padding:12px;text-align:left;color:var(--text)}
.practice-choice span,.practice-choice small{display:block}.practice-choice span{font-weight:800;margin-bottom:4px}.practice-choice small{color:var(--muted);line-height:1.35}
.practice-choice.selected{border-color:var(--p);background:#eef0ff}
.ai-button{border:0;border-radius:15px;padding:12px 16px;font-weight:800;background:linear-gradient(135deg,#7258e8,#4e8cf5);color:white}
.practice-status{margin-top:12px;padding:12px;border-radius:14px;background:#f7f8ff;color:var(--muted);line-height:1.5}
.target-text{color:var(--p)}
:root[data-theme="dark"] .practice-choice,:root[data-theme="dark"] .practice-status{background:#242b45}
@media(max-width:420px){.practice-grid{grid-template-columns:1fr}}

.mic-meter{height:15px;background:#dfe3f4;border-radius:999px;overflow:hidden;margin:12px 0 7px}
.mic-meter i{display:block;width:0;height:100%;background:linear-gradient(90deg,#27b67c,#ffd34e,#ef6262);transition:width .08s linear}
.recording-player{width:100%;max-width:560px;margin-top:12px}
:root[data-theme="dark"] .mic-meter{background:#333b59}

.ipa-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(92px,1fr));gap:9px}.ipa-card{border:0;border-radius:16px;background:#f3f4ff;padding:13px;color:var(--text)}.ipa-card strong{display:block;font-size:25px;color:var(--p)}.ipa-card span{font-size:11px;color:var(--muted)}.ipa-symbol{font-size:70px;font-weight:800;color:var(--p)}.phonetic-focus{text-align:center}.ipa-line{font-size:24px;color:var(--p);font-weight:700;margin:7px}.session-progress{height:10px;background:#e8eafb;border-radius:999px;overflow:hidden;margin:0 0 14px}.session-progress i{display:block;height:100%;background:linear-gradient(90deg,#5457e8,#23b47e)}.question-count{font-weight:800;color:var(--muted);margin-bottom:8px}.animated-feedback{margin-top:16px;border-radius:20px;padding:18px;text-align:center;animation:popIn .3s ease}.animated-feedback>div{font-size:44px}.animated-feedback.good{background:#e8fff6}.animated-feedback.try{background:#fff6dc}.result-overlay{position:fixed;inset:0;background:rgba(20,24,50,.7);z-index:1000;display:grid;place-items:center;padding:20px}.result-pop{background:white;color:#252a48;border-radius:28px;padding:28px;max-width:420px;width:100%;text-align:center;animation:popIn .35s ease}.result-icon{font-size:70px}.result-score{font-size:48px;font-weight:900;color:#5457e8}.profile-row{width:100%;display:grid;grid-template-columns:45px 1fr auto;gap:8px;align-items:center;border:2px solid transparent;background:#f5f6ff;border-radius:16px;padding:12px;margin:8px 0;text-align:left}.profile-row span{font-size:30px}.profile-row small{color:var(--muted)}.profile-row.active{border-color:var(--p)}.history-row{display:grid;grid-template-columns:95px 1fr 55px;gap:7px;padding:10px 0;border-bottom:1px solid #e7e9f5}.history-row small{grid-column:2/4;color:var(--muted)}@keyframes popIn{from{transform:scale(.85);opacity:0}to{transform:scale(1);opacity:1}}:root[data-theme="dark"] .ipa-card,:root[data-theme="dark"] .profile-row{background:#242b45}:root[data-theme="dark"] .result-pop{background:#1c2238;color:#f4f6ff}@media(max-width:480px){.ipa-grid{grid-template-columns:repeat(4,1fr)}.history-row{grid-template-columns:75px 1fr 45px}}


.ai-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:16px}
.recommend-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.recommend-card{border:0;border-radius:18px;padding:16px;background:#f1f2ff;text-align:left;color:var(--text)}
.recommend-card span,.recommend-card b,.recommend-card small{display:block}.recommend-card span{font-size:30px}.recommend-card small{color:var(--muted);margin-top:5px}
.adaptive-row{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid #e8e9f5}
.teacher-bubble{padding:18px;border-radius:20px 20px 20px 5px;background:#eceeff;font-size:20px;font-weight:700;margin-bottom:12px}
.student-answer{padding:16px;border-radius:20px 20px 5px 20px;background:#f7f8ff;margin:14px 0;min-height:28px}
.hint-box{margin-top:12px;padding:12px;border-radius:14px;background:#fff8dc}.reading-focus{text-align:center}
@media(max-width:700px){.recommend-grid{grid-template-columns:1fr}.ai-banner{align-items:flex-start;flex-direction:column}}


.student-identity{display:flex;align-items:center;gap:16px;background:linear-gradient(135deg,#5b5de8,#8a75fb);color:white;border-radius:24px;padding:20px;margin-bottom:15px}.student-identity .avatar{flex:none}.student-identity button{margin-left:auto}
.skill-bar{display:grid;grid-template-columns:95px 1fr 48px;gap:10px;align-items:center;margin:10px 0;text-transform:capitalize}.skill-bar>div{height:12px;background:#e9eaf5;border-radius:99px;overflow:hidden}.skill-bar i{display:block;height:100%;background:linear-gradient(90deg,#5b5de8,#56c9a5)}
.student-strip{display:flex;align-items:center;justify-content:space-between}.certificate-tiers{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.certificate-tier{padding:14px;border-radius:18px;background:#f5f6ff;text-align:center;opacity:.72}.certificate-tier.ready{opacity:1;outline:2px solid #5b5de8}.certificate-tier span,.certificate-tier b,.certificate-tier small{display:block}.certificate-tier span{font-size:32px}.certificate-tier small{color:var(--muted);margin:6px 0}
@media(max-width:700px){.certificate-tiers{grid-template-columns:repeat(2,1fr)}.student-identity{align-items:flex-start;flex-wrap:wrap}.student-identity button{margin-left:0}}


.commercial-strip{display:flex;align-items:center;justify-content:space-between;gap:15px}.parent-summary{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:12px;align-items:center}.parent-summary>div{display:flex;flex-direction:column}.parent-summary strong{font-size:28px}.parent-summary span{color:var(--muted)}
.class-row,.assignment-row{display:flex;align-items:center;gap:10px;border-bottom:1px solid #e8e9f5;padding:11px 0}.class-row>div{flex:1}.class-row small,.assignment-row small{display:block;color:var(--muted)}.assignment-row b{flex:1}.student-check{padding:10px;display:block;border-bottom:1px solid #eee}
@media(max-width:700px){.commercial-strip{align-items:flex-start;flex-direction:column}.parent-summary{grid-template-columns:repeat(2,1fr)}}

.alpha-banner{display:flex;justify-content:space-between;align-items:center;gap:16px;border:2px solid rgba(84,87,232,.18)}
.builder-pro{position:relative}.builder-top{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:13px}.builder-hint{padding:12px;margin:12px 0;border-radius:14px;background:#fff8dc;font-weight:700}
.alpha-built{min-height:72px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.placeholder{color:var(--muted)}
.alpha-word-bank{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}.builder-word,.built-token{border:0;border-radius:14px;padding:12px 15px;font-weight:800;font-size:17px;cursor:pointer;transition:transform .15s,opacity .15s}
.builder-word{background:#eef0ff;color:var(--p);box-shadow:0 5px 14px rgba(84,87,232,.12)}.builder-word:hover{transform:translateY(-2px)}.builder-word.used{opacity:.28;transform:scale(.94)}
.built-token{background:var(--p);color:white;animation:popWord .18s ease}.feedback-emoji{font-size:50px}.mini-score{font-size:34px;font-weight:900;color:var(--p)}.explain-box{padding:13px;border-radius:14px;background:#f3f4ff;margin:12px 0;line-height:1.5}
@keyframes popWord{from{transform:scale(.75);opacity:.2}to{transform:scale(1);opacity:1}}
:root[data-theme="dark"] .builder-hint,:root[data-theme="dark"] .explain-box,:root[data-theme="dark"] .builder-word{background:#272e48}
@media(max-width:650px){.alpha-banner{align-items:flex-start;flex-direction:column}.builder-top{font-size:11px}.builder-word,.built-token{font-size:15px;padding:10px 12px}}

/* Build 101 UTF-8 and SVG identity */
html,body,button,input,select,textarea{font-family:Inter,ui-rounded,"Segoe UI",Roboto,Arial,"Apple Color Emoji","Segoe UI Emoji","Noto Color Emoji",sans-serif}
.brand{display:flex;align-items:center;gap:8px}.brand small{margin-left:2px}
.svg-icon{display:inline-grid;place-items:center;width:var(--icon-size);height:var(--icon-size);flex:none}
.svg-icon svg{width:100%;height:100%;display:block}
.pill{display:inline-flex;align-items:center;gap:6px}
.connection-pill .svg-icon{color:#25b67a}