:root{color-scheme:dark;--learn-bg:#090a10;--learn-card:#1b1b22;--learn-card2:#151822;--learn-text:#f5f7fb;--learn-muted:#8f94a3;--learn-line:rgba(255,255,255,.08);--learn-accent:#cdb5ff;--learn-blue:#38a7ff;--learn-green:#00d28f;--learn-gold:#f6d66c}
body[data-page="learning-center"]{background:radial-gradient(circle at 20% 0%,rgba(112,65,210,.18),transparent 26%),linear-gradient(180deg,#0b0d14 0%,#090a10 70%);color:var(--learn-text);min-height:100vh}.learning-app{max-width:1120px;margin:0 auto;padding:18px 18px 48px}.learning-top{position:sticky;top:0;z-index:8;margin:-18px -18px 14px;padding:16px 18px;background:rgba(9,10,16,.82);backdrop-filter:blur(18px);border-bottom:1px solid var(--learn-line);display:flex;align-items:center;justify-content:space-between;gap:12px}.learning-brand{display:flex;align-items:center;gap:12px}.learning-brand img{width:44px;height:44px;border-radius:16px;box-shadow:0 0 24px rgba(90,255,218,.2)}.learning-kicker{margin:0;color:#7ef5e5;font-size:12px;letter-spacing:.08em;text-transform:uppercase}.learning-top h2{margin:0;font-size:24px;line-height:1.1}.learning-actions{display:flex;gap:8px;flex-wrap:wrap}.learning-pill-btn{border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.06);color:#fff;border-radius:999px;padding:10px 14px;text-decoration:none;font-weight:800}.learning-hero{border:1px solid rgba(255,255,255,.09);border-radius:30px;padding:24px;background:linear-gradient(135deg,rgba(205,181,255,.16),rgba(0,210,143,.09)),radial-gradient(circle at 85% 5%,rgba(246,214,108,.18),transparent 35%),var(--learn-card);box-shadow:0 24px 70px rgba(0,0,0,.35);overflow:hidden}.learning-hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:center}.learning-hero-title{font-size:clamp(34px,6vw,68px);line-height:.98;margin:8px 0}.learning-hero p{color:#d9deea;font-size:18px;line-height:1.65;max-width:720px}.learning-stat-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.learning-stat{display:flex;align-items:center;gap:8px;padding:10px 14px;border-radius:999px;background:rgba(0,0,0,.22);border:1px solid rgba(255,255,255,.08);font-weight:900}.learning-visual{min-height:240px;border-radius:26px;background:linear-gradient(145deg,rgba(0,0,0,.16),rgba(255,255,255,.07));display:grid;place-items:center;position:relative;overflow:hidden}.learning-visual:before{content:"";position:absolute;inset:24px;background:linear-gradient(135deg,transparent 42%,rgba(0,210,143,.4) 43%,transparent 45%),linear-gradient(35deg,transparent 48%,rgba(246,214,108,.32) 49%,transparent 51%);opacity:.8}.learning-visual strong{position:relative;font-size:72px}.learning-section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:28px 0 14px}.learning-section-title h3{margin:0;font-size:28px}.learning-section-title p{margin:4px 0 0;color:var(--learn-muted)}.learning-category-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.learning-category{min-height:210px;border:1px solid rgba(255,255,255,.08);background:linear-gradient(145deg,rgba(255,255,255,.05),rgba(255,255,255,.02)),#1b1b20;border-radius:26px;padding:18px;text-align:left;color:#fff;cursor:pointer;box-shadow:0 16px 40px rgba(0,0,0,.26);transition:.18s transform,.18s border-color}.learning-category:hover,.learning-category.active{transform:translateY(-2px);border-color:rgba(205,181,255,.5)}.learning-category .cat-icon{font-size:58px;display:block;margin-bottom:28px}.learning-category strong{display:block;font-size:20px;line-height:1.15}.learning-category small{display:block;color:#858b99;margin-top:8px;line-height:1.4}.lesson-shell{display:grid;grid-template-columns:390px minmax(0,1fr);gap:18px;align-items:start}.lesson-list{display:grid;gap:12px}.lesson-row{display:grid;grid-template-columns:46px minmax(0,1fr) auto;gap:14px;align-items:center;border:1px solid rgba(255,255,255,.07);background:linear-gradient(145deg,rgba(255,255,255,.045),rgba(255,255,255,.018)),#1c1b22;border-radius:24px;padding:18px;cursor:pointer;color:#fff;text-align:left}.lesson-row.locked{opacity:.55}.lesson-row.done .lesson-check{opacity:1}.lesson-check{font-size:28px;opacity:.25}.lesson-row strong{display:block;font-size:20px}.lesson-row small{display:block;color:#737987;margin-top:8px}.lesson-tier{font-size:12px;border-radius:999px;border:1px solid rgba(255,255,255,.14);padding:5px 8px;color:#e8e1ff}.reader-panel{border:1px solid rgba(255,255,255,.08);background:linear-gradient(180deg,#15151c,#10121a);border-radius:30px;min-height:520px;overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.35)}.reader-empty{display:grid;place-items:center;text-align:center;min-height:520px;padding:30px;color:#aeb6c6}.reader-hero{min-height:260px;padding:28px;display:flex;flex-direction:column;justify-content:flex-end;background:linear-gradient(180deg,rgba(0,0,0,.12),rgba(0,0,0,.7)),radial-gradient(circle at 84% 24%,rgba(0,210,143,.22),transparent 28%),linear-gradient(135deg,#1e2230,#0f1018);position:relative}.reader-hero.has-image{background-size:cover;background-position:center}.reader-hero h2{font-size:clamp(30px,4vw,48px);margin:0}.reader-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}.reader-meta span{border:1px solid rgba(255,255,255,.13);background:rgba(0,0,0,.28);border-radius:999px;padding:7px 10px;font-size:12px;color:#e8ecf7}.reader-body{padding:24px}.guide-box{border:1px solid rgba(205,181,255,.22);background:rgba(205,181,255,.06);border-radius:24px;padding:18px;margin-bottom:20px}.guide-top{display:flex;justify-content:space-between;gap:12px;align-items:center}.guide-top h3{margin:0}.guide-controls{display:flex;gap:8px;flex-wrap:wrap}.guide-btn,.mark-btn{border:0;border-radius:16px;padding:11px 14px;font-weight:900;color:#0d111b;background:var(--learn-blue);cursor:pointer}.guide-btn.secondary{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.1)}.mark-btn{background:var(--learn-green)}.guide-text{margin:16px 0 2px;color:#eef2f9;font-size:18px;line-height:1.85;white-space:pre-line}.guide-box .learning-kicker{margin-bottom:3px}.guide-steps{display:grid;gap:10px;margin-top:14px}.guide-card{border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.045);border-radius:18px;padding:14px}.guide-card.active{border-color:rgba(56,167,255,.6);box-shadow:0 0 0 3px rgba(56,167,255,.12)}.guide-card.speaking{border-color:rgba(0,210,143,.85);background:rgba(0,210,143,.09);box-shadow:0 0 0 3px rgba(0,210,143,.13)}.guide-card strong{display:block;font-size:17px}.guide-card p{margin:7px 0;color:#c9cfdd;line-height:1.55}.lesson-content{font-size:19px;line-height:1.78;color:#f2f5fb}.lesson-content h2,.lesson-content h3,.lesson-content h4{line-height:1.16;margin:34px 0 12px;color:#fff}.lesson-content p{margin:0 0 18px}.lesson-content strong{color:#fff}.lesson-content ul{margin:0 0 18px;padding-left:24px}.login-needed{border:1px solid rgba(246,214,108,.28);background:rgba(246,214,108,.06);border-radius:24px;padding:22px;text-align:center}.voice-guide-player{border:1px solid rgba(0,210,143,.25);background:linear-gradient(145deg,rgba(0,210,143,.09),rgba(56,167,255,.06));border-radius:24px;padding:18px;margin-bottom:18px}.voice-guide-head{display:flex;align-items:center;justify-content:space-between;gap:18px}.voice-guide-head h3{margin:2px 0 4px;font-size:24px}.voice-guide-head p{margin:0;color:#aeb8c8;line-height:1.5}.voice-main-play{width:88px;height:88px;flex:0 0 88px;border-radius:50%;border:1px solid rgba(255,255,255,.17);background:linear-gradient(145deg,#31b4ff,#00d28f);color:#071018;font-size:16px;font-weight:950;cursor:pointer;box-shadow:0 16px 36px rgba(0,210,143,.18)}.voice-toolbar{display:flex;align-items:end;gap:10px;flex-wrap:wrap;margin-top:16px}.voice-toolbar label{display:grid;gap:6px;color:#9ba8ba;font-size:12px;font-weight:800}.voice-toolbar select,.voice-secondary{min-height:42px;border:1px solid rgba(255,255,255,.12);border-radius:13px;background:rgba(4,9,17,.78);color:#fff;padding:9px 11px;font-weight:800}.voice-secondary{cursor:pointer}.voice-secondary:disabled{opacity:.36;cursor:not-allowed}.voice-progress{height:6px;margin-top:15px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}.voice-progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,#38a7ff,#00d28f);transition:width .2s ease}.voice-status{margin-top:8px;color:#aeb8c8;font-size:12px}.voice-guide-player button:focus-visible,.voice-guide-player select:focus-visible{outline:2px solid rgba(126,245,229,.8);outline-offset:2px}.toast-msg{position:fixed;right:18px;bottom:24px;background:#101826;border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:12px 14px;color:#fff;z-index:30;box-shadow:0 18px 60px rgba(0,0,0,.45)}@media(max-width:920px){.learning-hero-grid,.lesson-shell{grid-template-columns:1fr}.learning-category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.reader-panel{min-height:420px}.learning-hero{padding:20px}.learning-visual{display:none}}@media(max-width:560px){.learning-app{padding:12px 14px 32px}.learning-top{margin:-12px -14px 12px;padding:12px 14px}.learning-top h2{font-size:19px}.learning-actions{display:none}.learning-hero-title{font-size:38px}.learning-hero p{font-size:15px}.learning-category{min-height:170px;padding:16px}.learning-category .cat-icon{font-size:46px;margin-bottom:22px}.learning-category strong{font-size:17px}.lesson-row{grid-template-columns:38px minmax(0,1fr);padding:16px}.lesson-tier{grid-column:2}.reader-body{padding:18px}.lesson-content{font-size:17px}.guide-top{display:grid}.voice-guide-head{align-items:flex-start}.voice-main-play{width:76px;height:76px;flex-basis:76px}.voice-toolbar{display:grid;grid-template-columns:1fr 1fr}.voice-toolbar label{min-width:0}.voice-toolbar select,.voice-secondary{width:100%}}
