:root{
  --bg:#f5f3fb;--panel:#ffffff;--panel-soft:rgba(255,255,255,.78);--ink:#181827;--muted:#74738a;--muted2:#9a98ac;
  --line:#e9e6f1;--purple:#8b5cf6;--purple2:#6d42e5;--lav:#eee7ff;--cyan:#8be8ff;--green:#2fbf8f;--danger:#d95f7b;
  --shadow:0 18px 55px rgba(47,39,87,.10);--shadow-sm:0 8px 24px rgba(47,39,87,.08);--radius:24px;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 75% 5%,#eee8ff 0,transparent 30%),radial-gradient(circle at 20% 90%,#e5f8ff 0,transparent 28%),var(--bg);color:var(--ink);font-family:inherit}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}.hidden{display:none!important}
.app-shell{min-height:100vh;display:grid;grid-template-columns:264px minmax(0,1fr)}
.sidebar{position:sticky;top:0;height:100vh;padding:27px 20px;display:flex;flex-direction:column;background:rgba(255,255,255,.72);backdrop-filter:blur(20px);border-right:1px solid rgba(223,219,235,.9)}
.brand{display:flex;align-items:center;gap:12px;padding:0 6px 24px}.brand-mark{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(145deg,#b184ff,#7547e7);color:#fff;font-weight:900;font-size:18px;box-shadow:0 12px 25px rgba(117,71,231,.23)}.brand-mark.small{width:36px;height:36px;border-radius:12px;font-size:15px}.brand-name{font-size:17px;font-weight:900;letter-spacing:.24em}.brand-sub{font-size:8px;color:#8d8aa0;letter-spacing:.18em;margin-top:4px}.new-btn{width:100%;border:0;border-radius:16px;padding:14px 16px;background:linear-gradient(135deg,#8f61f6,#7446e5);color:#fff;font-weight:800;box-shadow:0 12px 24px rgba(116,70,229,.18);margin-bottom:18px}.new-btn span{font-size:18px;margin-right:5px}.nav{display:grid;gap:5px}.nav-item{display:flex;align-items:center;gap:12px;border:1px solid transparent;background:transparent;color:#79778d;padding:12px 13px;border-radius:14px;text-align:left;font-weight:700}.nav-item:hover{background:#f7f5fb;color:#37354a}.nav-item.active{background:linear-gradient(90deg,#f0eaff,#faf9ff);border-color:#ded3fa;color:#5f36cc;box-shadow:inset 3px 0 #8b5cf6}.nav-icon{width:20px;text-align:center;color:inherit}.sidebar-note{margin-top:auto;padding:16px;border-radius:20px;background:linear-gradient(145deg,#f6f1ff,#effaff);border:1px solid #e4ddf5}.mini-orb{width:36px;height:36px;border-radius:12px;background:linear-gradient(145deg,#a778ff,#7042df);color:#fff;display:grid;place-items:center;font-weight:900;margin-bottom:11px}.sidebar-note strong{font-size:12px}.sidebar-note p{font-size:10px;color:#858298;line-height:1.55;margin:5px 0 0}.connection-card{display:flex;align-items:center;gap:10px;margin-top:13px;padding:11px 12px;border-radius:15px;background:#fff;border:1px solid var(--line)}.connection-card b{display:block;font-size:10px}.connection-card small{display:block;color:#a09caf;font-size:8px;margin-top:2px}.status-dot{width:8px;height:8px;border-radius:50%;background:#f2aa42;display:inline-block;box-shadow:0 0 0 4px rgba(242,170,66,.12);flex:none}.status-dot.live{background:#3acb9b;box-shadow:0 0 0 4px rgba(58,203,155,.12)}.status-dot.bad{background:#dc657d;box-shadow:0 0 0 4px rgba(220,101,125,.12)}
.main{min-width:0}.topbar{height:88px;padding:0 42px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(226,222,237,.9);background:rgba(250,249,253,.62);backdrop-filter:blur(16px);position:sticky;top:0;z-index:20}.head-copy h1{margin:4px 0 0;font-size:24px;letter-spacing:-.03em}.eyebrow{font-size:9px;font-weight:800;letter-spacing:.22em;color:#9793aa}.top-actions{display:flex;align-items:center;gap:10px}.status-pill{display:flex;align-items:center;gap:8px;padding:9px 13px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:11px;font-weight:700;color:#555369}.icon-btn{width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:#fff;color:#66647a}.mobile-brand{display:none}.content{max-width:1440px;margin:0 auto;padding:32px 42px 60px}.setup-strip{display:flex;align-items:center;gap:13px;padding:13px 15px;border-radius:18px;background:#fff8ec;border:1px solid #f1ddbb;margin-bottom:18px}.setup-icon{width:28px;height:28px;border-radius:10px;background:#ffe5ba;color:#8b5a14;display:grid;place-items:center;font-weight:900}.setup-strip b{font-size:11px}.setup-strip p{margin:3px 0 0;color:#8b7b62;font-size:9px}.setup-strip .btn{margin-left:auto}
.hero-card{min-height:330px;border-radius:30px;padding:38px 40px;display:grid;grid-template-columns:1.15fr .85fr;overflow:hidden;background:linear-gradient(135deg,#fff 0%,#f8f4ff 55%,#eefaff 100%);border:1px solid rgba(226,220,241,.9);box-shadow:var(--shadow);position:relative}.hero-card:after{content:"";position:absolute;width:330px;height:330px;border-radius:50%;right:-80px;top:-130px;background:radial-gradient(circle,#d9c8ff,transparent 68%);opacity:.5}.hero-copy{position:relative;z-index:2;max-width:650px}.hero-copy h2{font-size:44px;line-height:1.02;letter-spacing:-.05em;margin:10px 0 14px}.hero-copy h2 span{color:#7650df}.hero-copy p{font-size:14px;line-height:1.65;color:#747187;max-width:610px;margin:0}.hero-actions{display:flex;gap:10px;margin-top:22px}.btn{border:1px solid var(--line);border-radius:13px;padding:11px 16px;background:#fff;color:#3d3a4e;font-weight:800;font-size:11px}.btn.primary{border-color:#8555ec;background:linear-gradient(135deg,#9b6cf9,#7445e4);color:#fff;box-shadow:0 12px 25px rgba(116,69,228,.2)}.btn.secondary{background:#fff}.btn.small{padding:8px 11px}.btn.full{width:100%;margin-top:10px}.btn:hover{transform:translateY(-1px)}.hero-trust{display:flex;gap:18px;margin-top:18px;color:#8d899f;font-size:9px}.hero-visual{position:relative;display:grid;place-items:center;min-height:250px}.glow{position:absolute;width:270px;height:270px;border-radius:50%;background:radial-gradient(circle,#d7cbff 0,#eaf8ff 50%,transparent 70%)}.mascot-wrap{position:relative;width:190px;height:190px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.9);box-shadow:0 25px 50px rgba(80,67,123,.12);z-index:2}.mascot{width:150px;height:150px;object-fit:cover;border-radius:50%;mix-blend-mode:multiply}.mascot-ring{position:absolute;inset:9px;border:1px solid rgba(139,92,246,.16);border-radius:50%}.floating-card{position:absolute;z-index:3;background:rgba(255,255,255,.88);backdrop-filter:blur(12px);border:1px solid rgba(225,219,237,.9);box-shadow:var(--shadow-sm);border-radius:14px;padding:10px 12px}.floating-card small{display:block;color:#a19daf;font-size:7px;letter-spacing:.16em}.floating-card b{font-size:12px}.card-level{left:5%;bottom:25%}.card-live{right:0;top:20%;display:flex;align-items:center;gap:7px;font-size:9px}
.practice-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:18px;margin-top:18px}.practice-main{display:grid;gap:18px;min-width:0}.control-card,.conversation-card,.coach-card,.data-card,.stat-card{background:rgba(255,255,255,.86);border:1px solid var(--line);box-shadow:var(--shadow-sm);border-radius:24px}.control-card{padding:22px}.control-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px}.control-heading h3{margin:5px 0 0;font-size:18px;letter-spacing:-.02em}.selection-label{padding:8px 11px;background:#f5f0ff;border:1px solid #e3d9fb;color:#6b45c7;border-radius:10px;font-size:9px;font-weight:800}.level-picker{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;margin-top:17px}.level-chip{border:1px solid var(--line);background:#fff;border-radius:15px;padding:11px 8px;text-align:left}.level-chip b{display:block;font-size:13px}.level-chip small{display:block;color:#a09dae;font-size:8px;margin-top:3px}.level-chip.selected{border-color:#cbb9f6;background:#f4efff;box-shadow:inset 0 0 0 1px #8e61ec}.level-chip.selected b{color:#6c3fd2}.skill-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:15px}.skill-card{display:grid;grid-template-columns:32px 1fr 16px;align-items:center;gap:8px;text-align:left;padding:11px;border:1px solid var(--line);background:#fff;border-radius:15px;color:#3d3a4d}.skill-card:hover{border-color:#d7c8f7;background:#fbf9ff}.skill-card.selected{background:#f5efff;border-color:#cdbbf5}.skill-card.selected .skill-icon{background:#8a59ec;color:#fff}.skill-icon{width:30px;height:30px;border-radius:10px;background:#f4f1f9;color:#7b758d;display:grid;place-items:center;font-size:12px}.skill-card b{font-size:10px;display:block}.skill-card small{display:block;color:#9a96a9;font-size:8px;margin-top:3px}.skill-card i{font-style:normal;color:#b1adbd}
.conversation-card{overflow:hidden;min-height:620px;display:flex;flex-direction:column}.conversation-head{padding:16px 18px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.tutor-id{display:flex;align-items:center;gap:10px}.avatar-small{width:38px;height:38px;border-radius:13px;overflow:hidden;background:#f1ecff;border:1px solid #ded4f5}.avatar-small img{width:100%;height:100%;object-fit:cover;mix-blend-mode:multiply}.tutor-id b{display:block;font-size:11px}.tutor-id span{display:block;color:#9691a6;font-size:8px;margin-top:2px}.conversation-tools{display:flex;align-items:center;gap:12px;color:#aaa5b6;font-size:9px}.text-btn,.voice-link{border:0;background:transparent;color:#8b5de3;font-size:9px;font-weight:800}.chat-body{flex:1;min-height:360px;max-height:520px;overflow:auto;padding:25px 24px;display:flex;flex-direction:column;gap:14px;background:linear-gradient(180deg,#fff,#fcfbff)}.welcome-state{margin:auto;max-width:520px;text-align:center;display:flex;flex-direction:column;align-items:center}.welcome-orb{position:relative;width:94px;height:94px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(145deg,#f1eaff,#e9f8ff);border:1px solid #e2daf2;box-shadow:0 16px 40px rgba(93,71,150,.11);margin-bottom:16px}.orb-letter{width:54px;height:54px;border-radius:18px;display:grid;place-items:center;background:linear-gradient(145deg,#9c6afb,#7344e0);color:#fff;font-weight:900;font-size:22px}.pulse-ring{position:absolute;inset:-7px;border:1px solid rgba(139,92,246,.12);border-radius:50%}.welcome-state h3{font-size:22px;margin:5px 0 8px}.welcome-state p{font-size:11px;color:#8c879a;line-height:1.65;margin:0 auto 16px;max-width:450px}.bubble-row{display:flex;flex-direction:column;gap:7px;max-width:78%}.bubble-row.user{align-self:flex-end;align-items:flex-end}.bubble-row.assistant{align-self:flex-start}.bubble{padding:12px 14px;border-radius:17px;font-size:12px;line-height:1.6}.bubble.user{background:#7b4be4;color:#fff;border-bottom-right-radius:5px;box-shadow:0 8px 18px rgba(115,70,221,.13)}.bubble.assistant{background:#f7f5fb;border:1px solid #ebe7f1;border-bottom-left-radius:5px;color:#302e40}.feedback-card,.explain-card{border:1px solid #e7e2ef;background:#fff;border-radius:15px;padding:11px 12px}.small-label{font-size:7px;font-weight:900;letter-spacing:.18em;color:#9a95aa;margin-bottom:7px}.corr{display:grid;grid-template-columns:1fr auto 1fr;gap:8px;align-items:center;font-size:9px;padding:7px 0;border-top:1px solid #eeeaf3}.corr:first-of-type{border-top:0}.corr small{grid-column:1/-1;color:#908b9e;line-height:1.45}.explain-card{font-size:9px;color:#787286;line-height:1.55}.thinking{display:none;align-items:center;gap:5px;padding:0 24px 8px;color:#a19bad;font-size:9px}.thinking.show{display:flex}.thinking span{width:6px;height:6px;border-radius:50%;background:#9363ed}.thinking span:nth-child(2){opacity:.65}.thinking span:nth-child(3){opacity:.35}.composer-wrap{padding:13px 15px 11px;border-top:1px solid var(--line);background:#fff}.voice-mode{display:flex;align-items:center;gap:8px;margin-bottom:8px;color:#a09bab;font-size:8px}.mic-btn{width:32px;height:32px;border-radius:11px;border:1px solid #ddd7ea;background:#f8f5ff;color:#7746df}.mic-btn.active{background:#7b4be4;color:#fff;border-color:#7b4be4}.composer{display:grid;grid-template-columns:1fr 46px;gap:8px}.composer textarea{width:100%;min-height:50px;max-height:120px;resize:none;border:1px solid #e2deeb;border-radius:16px;background:#fbfaff;padding:14px;color:#272535;outline:none;font-size:12px}.composer textarea:focus{border-color:#a47af0;box-shadow:0 0 0 3px rgba(139,92,246,.08)}.composer textarea::placeholder{color:#b0acbb}.send-btn{border:0;border-radius:15px;background:linear-gradient(145deg,#9b69fa,#7546e4);color:#fff;font-size:20px;box-shadow:0 10px 20px rgba(117,70,228,.18)}.composer-foot{display:flex;justify-content:space-between;align-items:center;padding:7px 3px 0;color:#aaa5b3;font-size:8px}
.coach-rail{display:grid;gap:12px;align-content:start}.coach-card{padding:18px}.card-kicker{font-size:8px;font-weight:900;letter-spacing:.17em;color:#9a95aa}.live-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#42c89b;box-shadow:0 0 0 4px rgba(66,200,155,.1);vertical-align:middle;margin-right:5px}.coach-card h3{font-size:16px;margin:7px 0 0}.coach-card p{font-size:10px;color:#888398;line-height:1.6;margin:7px 0 14px}.toggle-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 0;border-top:1px solid #eeeaf2}.toggle-row b{display:block;font-size:10px}.toggle-row small{display:block;color:#9b96a8;font-size:8px;margin-top:3px}.toggle-row input{display:none}.toggle-row i{width:38px;height:22px;border-radius:999px;background:#e5e2eb;border:1px solid #d8d3e1;position:relative;flex:none}.toggle-row i:after{content:"";position:absolute;width:16px;height:16px;left:2px;top:2px;border-radius:50%;background:#fff;box-shadow:0 2px 4px rgba(0,0,0,.12);transition:.18s}.toggle-row input:checked+i{background:#8452e8;border-color:#8452e8}.toggle-row input:checked+i:after{transform:translateX(16px)}.live-controls{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding-top:11px}.live-controls label{font-size:8px;color:#9994a7}.live-controls select,.voice-toggle,.field input,.field select{width:100%;margin-top:5px;border:1px solid #e2deeb;background:#fbfaff;color:#3b384b;border-radius:11px;padding:9px;font-size:9px}.voice-toggle{margin:0;cursor:pointer;font-weight:800}.voice-toggle.on{background:#f3edff;border-color:#d7c7f8;color:#7040d4}.score-head{display:flex;justify-content:space-between;align-items:flex-start;margin:10px 0 12px}.score-head h3{margin:0}.score-head small{display:block;color:#a19cac;font-size:8px;margin-top:3px}.score-head strong{font-size:27px;color:#6f43d7}.score-list{display:grid;gap:10px}.score-list>div{display:grid;grid-template-columns:70px 1fr 24px;gap:7px;align-items:center;font-size:8px;color:#858093}.score-list i{height:7px;border-radius:999px;background:#eeeaf3;overflow:hidden}.score-list i b{display:block;height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,#9a69f7,#7c51df)}.score-list em{font-style:normal;text-align:right;color:#5d586c;font-weight:800}.focus-list,.word-list{display:grid;gap:7px;margin-top:10px}.focus-item,.word{border:1px solid #eeeaf3;background:#fbfaff;border-radius:12px;padding:9px}.focus-item{font-size:9px;color:#686377}.word b{font-size:10px}.word span{font-size:8px;color:#9a95a7;margin-left:5px}.word small{display:block;color:#9993a5;font-size:8px;line-height:1.45;margin-top:3px}.rail-empty{font-size:9px;color:#aaa5b4;line-height:1.55;padding-top:5px}
.view{display:none}.view.active{display:block}.page-hero{position:relative;padding:15px 0 26px}.page-hero h2{font-size:38px;letter-spacing:-.04em;margin:8px 0 9px}.page-hero p{max-width:680px;color:#817c91;font-size:12px;line-height:1.6;margin:0}.page-hero .btn{margin-top:16px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.stat-card{padding:20px}.stat-card small{display:block;color:#9b96a8;font-size:8px;text-transform:uppercase;letter-spacing:.12em}.stat-card strong{display:block;font-size:30px;margin-top:8px}.stat-card span{font-size:9px;color:#a5a0ae}.data-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}.data-card{padding:20px}.data-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:10px}.data-head h3{font-size:17px;margin:6px 0 0}.progress-row{display:grid;grid-template-columns:1fr 170px;gap:12px;align-items:center;padding:12px 0;border-top:1px solid #eeeaf2}.progress-row:first-child{border-top:0}.progress-row b{font-size:10px}.progress-row span{display:block;font-size:8px;color:#9994a6;margin-top:3px}.mastery{height:7px;border-radius:999px;background:#eeeaf3;overflow:hidden}.mastery i{display:block;height:100%;background:linear-gradient(90deg,#a06ef7,#7d52e4);border-radius:999px}.mistake{padding:12px 0;border-top:1px solid #eeeaf2}.mistake:first-child{border-top:0}.mistake b{font-size:10px}.mistake span{display:block;font-size:9px;color:#8b8699;line-height:1.5;margin-top:3px}.mistake small{font-size:8px;color:#aaa4b2}.memory-list{display:grid}.memory-item{display:grid;grid-template-columns:120px 1fr;gap:16px;padding:14px 0;border-top:1px solid #eeeaf2}.memory-item:first-child{border-top:0}.tag{display:inline-flex;align-self:start;justify-content:center;border:1px solid #ddd2f5;background:#f5efff;color:#7040d3;padding:6px 8px;border-radius:999px;font-size:7px;font-weight:800;text-transform:uppercase;letter-spacing:.1em}.memory-item b{font-size:10px}.memory-item p{margin:4px 0 0;color:#8d889b;font-size:9px;line-height:1.5}.memory-item button{border:0;background:transparent;color:#9b95a7;font-size:8px;padding:6px 0 0}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:block;margin-top:15px}.field>span{display:block;font-size:8px;font-weight:800;text-transform:uppercase;letter-spacing:.12em;color:#9691a4}.info-card{margin-top:16px;border-radius:15px;padding:12px;background:#f6f2ff;border:1px solid #e3d8f8}.info-card b{font-size:9px;color:#6e43cc}.info-card p{font-size:8px;color:#8b859a;line-height:1.55;margin:5px 0 0}.button-stack{margin-top:8px}.server-status{margin-top:20px;border-top:1px solid #eeeaf2;padding-top:15px}.server-status>div{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px solid #f0edf4;font-size:9px}.server-status span:not(.eyebrow){color:#8f899c}.server-status b{color:#504b5e}.mobile-nav{display:none}.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:#222033;color:#fff;border-radius:13px;padding:11px 15px;font-size:10px;box-shadow:0 15px 35px rgba(31,25,55,.2);transition:.2s;z-index:100}.toast.show{opacity:1;transform:translate(-50%,0)}.toast.error{background:#6f2740}.toast.success{background:#226c57}
@media(max-width:1200px){.practice-layout{grid-template-columns:1fr}.coach-rail{grid-template-columns:repeat(2,1fr)}.hero-card{grid-template-columns:1fr .7fr}.skill-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:820px){.app-shell{display:block}.sidebar{display:none}.topbar{height:70px;padding:0 16px}.mobile-brand{display:flex;align-items:center;gap:9px}.mobile-brand strong{font-size:13px;display:block;letter-spacing:.14em}.mobile-brand small{font-size:8px;color:#9a96a8}.head-copy{display:none}.top-actions .icon-btn{display:none}.content{padding:18px 14px 95px}.hero-card{padding:25px 22px;grid-template-columns:1fr;min-height:0}.hero-copy h2{font-size:35px}.hero-visual{min-height:220px}.hero-trust{flex-wrap:wrap;gap:10px}.practice-layout{gap:13px}.control-card,.conversation-card,.coach-card,.data-card{border-radius:20px}.level-picker{grid-template-columns:repeat(3,1fr)}.skill-grid{grid-template-columns:1fr 1fr}.coach-rail{grid-template-columns:1fr}.chat-body{min-height:390px;max-height:55vh}.stats{grid-template-columns:1fr 1fr}.data-grid,.settings-grid{grid-template-columns:1fr}.page-hero h2{font-size:31px}.mobile-nav{display:grid;position:fixed;bottom:10px;left:10px;right:10px;height:65px;grid-template-columns:repeat(4,1fr);border:1px solid #ded9e8;background:rgba(255,255,255,.94);backdrop-filter:blur(18px);border-radius:20px;box-shadow:0 16px 40px rgba(45,37,79,.15);z-index:50}.mobile-nav button{border:0;background:transparent;color:#9691a4;font-size:8px;display:grid;place-items:center;gap:2px}.mobile-nav button.active{color:#7040d3}.mobile-nav b{font-size:14px}.setup-strip{align-items:flex-start}.setup-strip .btn{margin-left:0}.setup-strip{flex-wrap:wrap}}
@media(max-width:520px){.hero-actions{display:grid;grid-template-columns:1fr 1fr}.control-heading{display:block}.selection-label{display:inline-block;margin-top:10px}.skill-grid{grid-template-columns:1fr}.conversation-head{padding:13px}.chat-body{padding:18px 14px}.composer-wrap{padding:10px}.composer-foot{font-size:7px}.hero-visual{min-height:200px}.mascot-wrap{width:155px;height:155px}.mascot{width:125px;height:125px}.floating-card{transform:scale(.9)}.stats{grid-template-columns:1fr 1fr}.progress-row{grid-template-columns:1fr}.memory-item{grid-template-columns:1fr}.content{padding-left:10px;padding-right:10px}}
/* v16 refinements: conversation-first layout + language bridge */
.hero-card{min-height:270px;padding:30px 34px;grid-template-columns:minmax(0,1.2fr) minmax(260px,.8fr)}
.hero-copy h2{font-size:42px;margin:7px 0 8px}.hero-copy p{max-width:650px;font-size:11px;line-height:1.55}.hero-trust{gap:12px;margin-top:15px}.hero-trust span{font-size:8px}
.hero-visual{min-height:210px}.mascot-wrap{width:185px;height:185px}.mascot{width:145px;height:145px}.floating-card{padding:9px 11px}.card-live{right:3%}.card-level{left:3%}
.practice-layout{grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);gap:14px}.control-card{padding:18px}.control-heading h3{font-size:18px}.skill-grid{grid-template-columns:repeat(3,1fr);gap:7px}.skill-card{padding:10px}.skill-card small{font-size:7px}
.language-bridge{display:flex;align-items:center;justify-content:space-between;gap:18px;margin:13px 0 14px;padding:13px 15px;border:1px solid #e7e0f4;border-radius:16px;background:linear-gradient(100deg,#faf8ff,#f5fbff)}.language-bridge h4{margin:4px 0 3px;font-size:12px}.language-bridge p{margin:0;color:#9691a2;font-size:8px;line-height:1.45}.language-bridge select{min-width:190px;border:1px solid #ddd5ed;background:#fff;color:#4c485b;border-radius:11px;padding:9px 10px;font-size:9px;outline:none}
.conversation-card{min-height:0}.conversation-head{padding:13px 16px}.tutor-id>div:last-child{display:flex;flex-direction:column}.tutor-id>div:last-child span{font-size:8px}.tutor-id>div:last-child small{font-size:7px;color:#8e879e;margin-top:2px}.chat-body{min-height:320px;max-height:52vh;padding:20px}.welcome-state{min-height:280px;padding:24px 20px}.welcome-state h3{font-size:20px;margin:9px 0 5px}.welcome-state p{max-width:430px;font-size:10px}.bridge-card{max-width:520px;margin:7px 0;padding:9px 11px;border:1px solid #e4daf7;background:#faf7ff;border-radius:12px;color:#6e45b7;font-size:9px;line-height:1.5}.bubble-row.user .bridge-card{margin-left:auto}
.coach-card{padding:15px}.coach-card h3{font-size:15px}.coach-card p{font-size:9px}.toast.error{background:#40394d;color:#fff;border:1px solid rgba(255,255,255,.08)}
@media(max-width:1200px){.hero-card{grid-template-columns:1fr .75fr}.practice-layout{grid-template-columns:1fr}.coach-rail{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){.hero-card{min-height:0;padding:24px 20px}.hero-copy h2{font-size:34px}.hero-visual{min-height:180px}.mascot-wrap{width:160px;height:160px}.mascot{width:125px;height:125px}.language-bridge{display:grid;grid-template-columns:1fr}.language-bridge select{min-width:0;width:100%}.chat-body{min-height:300px;max-height:52vh}.welcome-state{min-height:250px}.skill-grid{grid-template-columns:1fr 1fr}}
/* v17 stability + conversation polish */
.conversation-card{min-height:0;height:auto}
.chat-body{min-height:260px;max-height:58vh}
.welcome-state{min-height:220px}
.toast.error{background:#3e334f;border:1px solid rgba(255,255,255,.12)}
@media(max-width:820px){.chat-body{min-height:260px;max-height:50vh}.welcome-state{min-height:210px}}
/* v18: conversation-first, compact setup, long listening */
.practice-intro{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:14px;padding:4px 2px}.practice-intro h2{font-size:26px;letter-spacing:-.035em;margin:5px 0 4px}.practice-intro p{margin:0;color:#858095;font-size:10px;line-height:1.5;max-width:650px}.intro-actions{display:flex;gap:8px;flex:none}.intro-actions .btn{white-space:nowrap}
.lesson-setup{padding:0;overflow:hidden}.lesson-setup summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:15px;padding:14px 17px}.lesson-setup summary::-webkit-details-marker{display:none}.lesson-setup summary:after{content:'⌄';font-size:15px;color:#938ca2;margin-left:auto}.lesson-setup[open] summary:after{transform:rotate(180deg)}.lesson-setup summary>div{display:flex;align-items:center;gap:10px}.lesson-setup summary h3{margin:0;font-size:13px}.lesson-setup> .level-picker,.lesson-setup> .language-bridge,.lesson-setup> .skill-grid{margin-left:17px;margin-right:17px}.lesson-setup> .skill-grid{margin-bottom:17px}
.practice-layout{grid-template-columns:minmax(0,1fr);margin-top:0}.coach-rail{display:none}.coach-rail.open{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:12px}.conversation-card{min-height:calc(100vh - 180px);height:calc(100vh - 180px)}.chat-body{min-height:0;max-height:none}.welcome-state{min-height:0}
.coach-rail.open .coach-card{min-width:0}.coach-rail.open .live-coach{grid-column:span 1}.coach-rail.open .progress-card{grid-column:span 1}
.mic-btn.active{box-shadow:0 0 0 7px rgba(139,92,246,.12),0 12px 25px rgba(116,69,228,.22);background:linear-gradient(145deg,#a978ff,#7243dd);color:#fff}.voice-mode{min-height:28px}
@media(max-width:900px){.practice-intro{align-items:flex-start;flex-direction:column}.intro-actions{width:100%}.intro-actions .btn{flex:1}.coach-rail.open{grid-template-columns:1fr 1fr}.conversation-card{height:calc(100vh - 155px);min-height:560px}}
@media(max-width:520px){.practice-intro{margin-bottom:10px}.practice-intro h2{font-size:22px}.intro-actions{display:grid;grid-template-columns:1fr 1fr 1fr}.intro-actions .btn{padding:9px 8px;font-size:9px}.lesson-setup summary{padding:12px}.lesson-setup summary .selection-label{display:inline-block;margin:0}.conversation-card{height:calc(100vh - 145px);min-height:520px}.coach-rail.open{grid-template-columns:1fr}.coach-rail.open .coach-card{grid-column:auto}}
/* v19: true full-screen lesson setup + conversation-first practice */
.practice-intro.compact{min-height:58px;margin-bottom:12px}
.practice-intro.compact h2{font-size:24px}
.practice-layout{height:calc(100vh - 180px);min-height:560px}
.practice-main{height:100%;min-height:0}
.conversation-card{height:100%;min-height:0;display:flex;flex-direction:column}
.chat-body{flex:1;min-height:0;max-height:none;overflow-y:auto}
.composer-wrap{flex:none}
.coach-rail.open{position:fixed;right:24px;top:104px;z-index:45;width:min(760px,calc(100vw - 390px));max-height:calc(100vh - 128px);overflow:auto;padding:14px;border-radius:24px;background:rgba(247,244,253,.96);box-shadow:0 24px 70px rgba(60,42,105,.2);border:1px solid rgba(225,218,241,.95);backdrop-filter:blur(22px);grid-template-columns:1fr 1fr;align-content:start}
.setup-screen{display:none;position:fixed;left:calc(335px + 1px);right:0;top:88px;bottom:0;z-index:40;padding:34px 42px 28px;overflow:auto;background:rgba(247,244,253,.98);backdrop-filter:blur(22px)}
.setup-screen.open{display:block}
.setup-screen-head{display:flex;justify-content:space-between;gap:24px;align-items:flex-start;max-width:1180px;margin:0 auto 24px}
.setup-screen-head h2{margin:6px 0 6px;font-size:32px;letter-spacing:-.04em}.setup-screen-head p{margin:0;color:#858095;font-size:12px;max-width:720px;line-height:1.6}.setup-close{width:44px;height:44px;border-radius:14px;font-size:26px;flex:none}
.setup-screen-grid{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:16px}.setup-panel{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 12px 30px rgba(61,42,107,.05)}.setup-panel.module-panel{grid-column:1/-1}.panel-kicker{font-size:9px;font-weight:900;letter-spacing:.2em;color:#9994aa;margin-bottom:13px}.setup-panel h3{margin:0 0 6px;font-size:19px}.setup-panel p{margin:0 0 16px;color:#858095;font-size:11px;line-height:1.55}.setup-panel .level-picker{margin:0}.setup-panel .skill-grid{margin:0}.setup-panel select{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:13px;background:#fbfaff;color:#4e4b61;font-size:11px}.setup-screen-foot{max-width:1180px;margin:18px auto 0;display:flex;justify-content:space-between;align-items:center;gap:15px;padding:14px 18px;background:#fff;border:1px solid var(--line);border-radius:18px}.setup-screen-foot span{font-size:11px;font-weight:800;color:#625f75}
body.setup-open{overflow:hidden}
@media(max-width:1000px){.setup-screen{left:0}.coach-rail.open{left:18px;right:18px;top:90px;width:auto}.practice-layout{height:calc(100vh - 172px)}}
@media(max-width:700px){.practice-intro.compact{display:none}.content{padding:14px 14px 76px}.practice-layout{height:calc(100vh - 112px);min-height:500px}.setup-screen{top:70px;padding:20px 14px 22px}.setup-screen-grid{grid-template-columns:1fr}.setup-panel.module-panel{grid-column:auto}.setup-screen-head h2{font-size:25px}.setup-screen-foot{position:sticky;bottom:0}.intro-actions{display:none}.topbar{height:70px;padding:0 16px}.head-copy{display:none}.mobile-brand{display:flex;align-items:center;gap:10px}.coach-rail.open{top:78px;bottom:76px;max-height:none;grid-template-columns:1fr}}

/* v20: pure conversation workspace */
.content{max-width:none;padding:18px 24px 24px;height:calc(100vh - 88px);overflow:hidden}
#view-practice{height:100%}
.practice-layout{height:100%;margin:0;display:block}
.practice-main{height:100%}
.conversation-card{height:100%;min-height:0;border-radius:24px}
.conversation-head{height:70px;flex:none}
.conversation-tools{gap:8px}
.head-action{border:1px solid var(--line);background:#faf9fd;color:#625e73;border-radius:10px;padding:7px 10px;font-size:9px;font-weight:800}
.head-action:hover{border-color:#d8caf5;color:#6d42d8;background:#f7f2ff}
.chat-body{max-height:none;min-height:0}
.composer-wrap{padding:14px 16px 12px}
#setupScreen{z-index:60}
.coach-rail.open{z-index:70}
#view-progress,#view-memory,#view-settings{height:100%;overflow:auto}

@media(max-width:820px){
 .content{height:calc(100vh - 70px);padding:10px 10px 80px;overflow:hidden}
 .conversation-card{height:100%;border-radius:20px}
 .conversation-head{height:64px;padding:10px 12px}
 .head-action{padding:7px 8px;font-size:8px}
 .conversation-tools #turnsMeta{display:none}
 .conversation-tools .text-btn{font-size:8px}
 .chat-body{min-height:0;max-height:none;padding:16px 12px}
 .composer-wrap{padding:10px}
 .composer textarea{min-height:48px}
}
@media(max-width:520px){
 .content{padding:8px 8px 76px}
 .avatar-small{width:34px;height:34px}
 .tutor-id span{font-size:7px}
 .tutor-id small{font-size:6px}
 .head-action{padding:6px 7px}
 .conversation-tools{gap:4px}
 .conversation-tools .text-btn{padding:5px}
}

/* v21: restore reliable interaction + chat search */
.search-hit{outline:2px solid rgba(124,77,224,.28);outline-offset:4px;border-radius:16px;transition:outline-color .2s ease}.conversation-tools #searchChat{cursor:pointer}.conversation-tools #searchChat:focus-visible{outline:2px solid #8b5cf6;outline-offset:2px}

/* v23: top navigation + voice-first full workspace */
:root{--topnav-h:78px}
body{overflow:hidden}
.app-shell{display:block;min-height:100vh}
.sidebar{display:none!important}
.main{width:100%;margin:0;min-width:0}
.topbar{height:var(--topnav-h);padding:0 28px;display:flex;align-items:center;gap:28px;border-bottom:1px solid var(--line);background:rgba(250,249,253,.92);backdrop-filter:blur(18px);position:relative;z-index:20}
.head-copy{min-width:180px;flex:none}.head-copy h1{margin:4px 0 0;font-size:24px;letter-spacing:-.035em}
.mobile-brand{display:none}
.top-nav{display:flex;align-items:center;gap:6px;flex:1;justify-content:center}
.top-nav-item,.top-new{border:1px solid transparent;background:transparent;color:#706b80;border-radius:12px;padding:10px 13px;font-size:11px;font-weight:800;cursor:pointer;white-space:nowrap;transition:.18s ease}
.top-nav-item span{margin-right:6px;color:#8f5df1}.top-nav-item:hover{background:#f4effd;color:#5f3fc1}.top-nav-item.active{background:#f4effd;border-color:#dfd2fa;color:#623bd1}
.top-new{margin-left:8px;background:linear-gradient(135deg,#925cf4,#713dde);color:#fff;box-shadow:0 8px 22px rgba(116,65,224,.2)}.top-new:hover{transform:translateY(-1px);box-shadow:0 11px 25px rgba(116,65,224,.26)}
.top-actions{flex:none}
.content{height:calc(100vh - var(--topnav-h));padding:14px 18px 18px;overflow:hidden;max-width:none}
#view-practice{height:100%}.practice-layout{height:100%;min-height:0}.practice-main{height:100%}
.conversation-card{height:100%;min-height:0;border-radius:24px;display:flex;flex-direction:column;box-shadow:0 14px 45px rgba(65,46,108,.08)}
.conversation-head{height:64px;flex:none;padding:10px 16px}.conversation-tools{gap:6px}
.chat-body{flex:1;min-height:0;max-height:none;overflow-y:auto;padding:22px 28px;scroll-behavior:smooth}
.welcome-state{min-height:100%;display:flex;flex-direction:column;justify-content:center;padding:20px}.welcome-state h3{font-size:27px}.welcome-state p{font-size:12px;max-width:520px}
.composer-wrap{flex:none;padding:12px 16px 13px;border-top:1px solid #eeeaf4;background:rgba(255,255,255,.92)}
.voice-mode{display:flex;align-items:center;gap:10px;min-height:40px}.voice-mode #micState{font-size:10px;color:#8a839a;font-weight:700}
.mic-btn{width:48px!important;height:48px!important;border-radius:16px!important;display:grid!important;place-items:center!important;border:1px solid #dcd0f5!important;background:linear-gradient(145deg,#fff,#f6f0ff)!important;color:#7041dc!important;box-shadow:0 8px 20px rgba(112,65,220,.12);cursor:pointer;font-size:20px!important;transition:.18s ease}
.mic-btn:hover{transform:translateY(-1px);box-shadow:0 11px 24px rgba(112,65,220,.18)}
.mic-btn.active{background:linear-gradient(145deg,#9a62f8,#7040dc)!important;color:#fff!important;box-shadow:0 0 0 7px rgba(139,92,246,.1),0 12px 28px rgba(112,65,220,.25)!important}
.mic-symbol{font-size:22px;line-height:1}
.composer{display:grid;grid-template-columns:minmax(0,1fr) 58px;gap:10px;align-items:end}.composer textarea{min-height:54px;max-height:150px;padding:15px 17px;font-size:14px;border-radius:17px}.send-btn{width:58px;height:58px;border-radius:17px}
.composer-foot{font-size:9px}.voice-link{font-size:9px}
.coach-rail.open{z-index:70}
.setup-screen{z-index:80}
.setup-screen{left:0;top:var(--topnav-h);padding-top:28px}
#view-progress,#view-memory,#view-settings{height:100%;overflow:auto}

@media(max-width:1050px){
 .topbar{padding:0 16px;gap:14px}.head-copy{min-width:145px}.head-copy h1{font-size:21px}.top-nav-item{padding:9px 9px;font-size:10px}.top-new{padding:9px 10px}
}
@media(max-width:800px){
 :root{--topnav-h:68px}.topbar{height:var(--topnav-h);padding:0 12px}.head-copy{display:none}.mobile-brand{display:flex;align-items:center;gap:9px;min-width:110px}.mobile-brand strong{font-size:13px;letter-spacing:.12em}.mobile-brand small{display:block;font-size:7px;color:#9992aa;text-transform:uppercase;letter-spacing:.12em;margin-top:2px}.top-nav{justify-content:flex-start;overflow-x:auto;scrollbar-width:none}.top-nav::-webkit-scrollbar{display:none}.top-nav-item{font-size:9px;padding:8px 9px}.top-nav-item:nth-child(n+3){display:none}.top-new{display:none}.top-actions .status-pill{padding:8px 9px;font-size:9px}.top-actions .icon-btn{width:34px;height:34px}
 .content{height:calc(100vh - var(--topnav-h));padding:8px 8px 10px}.conversation-card{border-radius:18px}.conversation-head{height:58px;padding:8px 10px}.tutor-id b{font-size:10px}.conversation-tools #searchChat{font-size:8px}.conversation-tools .head-action{padding:6px 7px;font-size:8px}.conversation-tools #turnsMeta{display:none}.conversation-tools .text-btn{font-size:8px}
 .chat-body{padding:14px 12px}.welcome-state h3{font-size:23px}.welcome-state p{font-size:10px}.composer-wrap{padding:9px}.composer{grid-template-columns:minmax(0,1fr) 52px}.composer textarea{min-height:50px;font-size:13px}.send-btn{width:52px;height:52px}.mic-btn{width:46px!important;height:46px!important}
 .setup-screen{top:var(--topnav-h);padding:18px 12px}.coach-rail.open{top:76px;left:10px;right:10px;width:auto}
}

/* v25: clean conversation canvas + dismissible insights panel */
.content{padding:0;max-width:none}
.practice-layout{margin-top:0;gap:0}
.conversation-card{border-radius:0;border-left:0;border-right:0;box-shadow:none}
.chat-body{padding:0 24px}
.welcome-state.compact{min-height:100%;padding:0;justify-content:center}
.welcome-state.compact #emptyStart{margin:0}

.coach-rail.open{right:18px;top:calc(var(--topnav-h) + 18px);width:min(760px,calc(100vw - 36px));max-height:calc(100vh - var(--topnav-h) - 36px);padding:14px;overflow:auto;border-radius:24px;background:rgba(247,244,253,.97);box-shadow:0 24px 70px rgba(60,42,105,.22);border:1px solid rgba(225,218,241,.98);backdrop-filter:blur(22px);grid-template-columns:1fr 1fr;align-content:start}
.coach-rail-close{position:absolute;right:14px;top:14px;width:36px;height:36px;border:1px solid #e3ddec;border-radius:12px;background:#fff;color:#6f687d;font-size:20px;line-height:1;display:grid;place-items:center;box-shadow:0 6px 18px rgba(55,43,88,.08);z-index:2}
.coach-rail-close:hover{background:#f7f3ff;color:#6f40d5}
.coach-rail.open .live-coach{padding-right:62px}
@media(max-width:1000px){.coach-rail.open{left:18px;right:18px;width:auto;top:calc(var(--topnav-h) + 18px)}}
@media(max-width:700px){.content{padding:0}.conversation-card{border-radius:0}.chat-body{padding:0 12px}.coach-rail.open{left:10px;right:10px;top:calc(var(--topnav-h) + 10px);bottom:10px;max-height:none;grid-template-columns:1fr}}

/* v26: microphone is the pause/resume control for continuous voice conversation */
.mic-btn{position:relative}
.mic-btn.live-control{background:linear-gradient(145deg,#9a62f8,#7040dc)!important;color:#fff!important;box-shadow:0 0 0 7px rgba(139,92,246,.1),0 12px 28px rgba(112,65,220,.25)!important}
.mic-btn.live-control::after{content:'■';position:absolute;right:5px;bottom:5px;width:13px;height:13px;border-radius:5px;background:#fff;color:#7040dc;font-size:7px;line-height:13px;text-align:center;box-shadow:0 2px 5px rgba(54,34,95,.18)}
.mic-btn.paused{background:linear-gradient(145deg,#fff,#f6f0ff)!important;color:#7041dc!important;box-shadow:0 8px 20px rgba(112,65,220,.12)!important}
.mic-btn.paused::after{content:'▶';position:absolute;right:5px;bottom:5px;width:13px;height:13px;border-radius:5px;background:#7040dc;color:#fff;font-size:7px;line-height:13px;text-align:center;box-shadow:0 2px 5px rgba(54,34,95,.18)}