:root{--coral: #ff7757;--teal: #2a9d8f;--teal-deep: #1d6f77;--bg: var(--tg-theme-bg-color, #ffffff);--bg-secondary: var(--tg-theme-secondary-bg-color, #f2f4f5);--text: var(--tg-theme-text-color, #1a1a1a);--hint: var(--tg-theme-hint-color, #7a8a8f);--card-radius: 16px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,sans-serif;background:var(--bg-secondary);color:var(--text);-webkit-font-smoothing:antialiased}.app{max-width:640px;margin:0 auto;padding:16px 16px 84px;min-height:100vh}.screen-title{font-size:22px;font-weight:800;margin:4px 0 16px}.card{background:var(--bg);border-radius:var(--card-radius);padding:16px;margin-bottom:12px}.card h3{font-size:15px;font-weight:700;margin-bottom:8px}.muted{color:var(--hint);font-size:13px}.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}.stat{background:var(--bg);border-radius:var(--card-radius);padding:14px}.stat .value{font-size:24px;font-weight:800;color:var(--teal)}.stat .value.coral{color:var(--coral)}.stat .label{font-size:12px;color:var(--hint);margin-top:2px}.hero{background:linear-gradient(135deg,var(--teal-deep),var(--teal));color:#fff;border-radius:var(--card-radius);padding:18px;margin-bottom:12px}.hero-glass{position:relative;overflow:hidden;background:linear-gradient(135deg,#2fb3a3 0%,var(--teal) 38%,var(--teal-deep) 100%);border:1px solid rgba(255,255,255,.32);box-shadow:0 14px 34px -14px #1d6f7799,0 2px 6px #0000000f,inset 0 1px #ffffff47}.hero-glass:before{content:"";position:absolute;inset:0;background:linear-gradient(160deg,#ffffff38,#ffffff14 40%,#fff0 70%);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);pointer-events:none}.hero-glass:after{content:"";position:absolute;width:180px;height:180px;right:-50px;top:-70px;border-radius:50%;background:radial-gradient(circle,#ffffff47,#fff0 70%);pointer-events:none}.hero-glass>*{position:relative}.streak-fire{display:inline-block;transform-origin:50% 80%;filter:drop-shadow(0 2px 6px rgba(255,119,87,.45))}.hero .big{font-size:28px;font-weight:800}.hero .sub{opacity:.85;font-size:13px;margin-top:4px}.progressbar{height:8px;background:#ffffff40;border-radius:4px;margin-top:12px;overflow:hidden}.progressbar>div{height:100%;background:var(--coral);border-radius:4px;box-shadow:0 0 10px #ff775773}.focus-item{display:flex;gap:10px;padding:8px 0;border-bottom:1px solid var(--bg-secondary)}.focus-item:last-child{border-bottom:none}.focus-num{flex:none;width:24px;height:24px;border-radius:50%;background:var(--coral);color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center}.focus-item b{display:block;font-size:14px}.focus-item span{font-size:13px;color:var(--hint)}.practice-btn{display:block;width:100%;padding:14px;border:none;border-radius:var(--card-radius);background:var(--coral);color:#fff;font-size:16px;font-weight:700;cursor:pointer;font-family:inherit;box-shadow:0 8px 20px -10px #ff7757b3;-webkit-tap-highlight-color:transparent}.practice-btn.secondary{box-shadow:0 8px 20px -10px #2a9d8fb3}.practice-btn.secondary{background:var(--teal)}.attempt{background:var(--bg);border-radius:var(--card-radius);margin-bottom:10px;overflow:hidden}.attempt summary{padding:14px 16px;cursor:pointer;list-style:none;display:flex;align-items:center;gap:12px}.attempt summary::-webkit-details-marker{display:none}.band-chip{flex:none;min-width:44px;text-align:center;padding:4px 8px;border-radius:10px;background:var(--teal);color:#fff;font-weight:800;font-size:14px}.attempt .q{font-size:14px;font-weight:600}.attempt .meta{font-size:12px;color:var(--hint)}.attempt-body{padding:0 16px 14px;font-size:14px}.attempt-body .transcript{background:var(--bg-secondary);border-radius:10px;padding:10px;font-style:italic;margin-bottom:10px}.error-item{margin-bottom:8px;font-size:13px}.error-item .fix{color:var(--teal);font-weight:600}.chart-wrap{background:var(--bg);border-radius:var(--card-radius);padding:16px;margin-bottom:12px}.tabbar{position:fixed;bottom:0;left:0;right:0;z-index:10;background:var(--bg);background:color-mix(in srgb,var(--bg) 74%,transparent);-webkit-backdrop-filter:blur(20px) saturate(1.5);backdrop-filter:blur(20px) saturate(1.5);border-top:1px solid color-mix(in srgb,var(--text) 9%,transparent);box-shadow:0 -8px 24px -16px #00000040;display:flex;gap:2px;max-width:640px;margin:0 auto;padding:6px 6px calc(6px + env(safe-area-inset-bottom))}.tabbar button{position:relative;flex:1;padding:8px 0 6px;border:none;border-radius:14px;background:none;font-size:11px;font-family:inherit;color:var(--hint);cursor:pointer;-webkit-tap-highlight-color:transparent;transition:color .2s ease}.tabbar button.active{color:var(--coral);font-weight:700}.tabbar .tab-pill{position:absolute;inset:0;border-radius:14px;background:color-mix(in srgb,var(--coral) 14%,transparent);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--coral) 22%,transparent);pointer-events:none}.tabbar .icon,.tabbar .tab-label{position:relative;z-index:1}.tabbar .icon{font-size:20px;display:block;margin-bottom:2px;will-change:transform}.center{text-align:center;padding:48px 16px;color:var(--hint)}.skill-banner{display:block;width:100%;aspect-ratio:16 / 9;object-fit:cover;border-radius:var(--card-radius);margin:0 0 8px}.section-header{font-size:14px;font-weight:800;margin:16px 4px 8px;text-transform:uppercase;letter-spacing:.4px;color:var(--hint)}.test-card{-webkit-tap-highlight-color:transparent;display:flex;width:100%;align-items:center;justify-content:space-between;gap:12px;background:var(--bg);border:none;border-radius:var(--card-radius);padding:14px 16px;margin-bottom:8px;text-align:left;cursor:pointer;color:var(--text);font-family:inherit}.test-card .q{font-size:15px;font-weight:600}.test-card .meta{font-size:12px;color:var(--hint);margin-top:2px}.test-card.locked{opacity:.55;cursor:default}.path-item{display:flex;gap:10px;align-items:stretch}.path-item .test-card{flex:1}.path-node{display:flex;flex-direction:column;align-items:center;width:34px;flex:none}.path-circle{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;flex:none;margin-top:6px}.path-circle.passed{background:var(--teal);color:#fff}.path-circle.active{background:var(--coral);color:#fff}.path-circle.locked{background:var(--bg);font-size:13px}.path-line{width:3px;flex:1;min-height:10px;background:var(--bg);border-radius:2px;margin:2px 0}.path-line.passed{background:var(--teal)}.unlock-banner{border-left:4px solid var(--teal);font-size:14px}.progress-row{display:flex;justify-content:space-between;align-items:baseline;font-size:15px;margin-bottom:8px}.progressline{height:10px;background:var(--bg-secondary);border-radius:6px;overflow:hidden}.progressline>div{height:100%;background:linear-gradient(90deg,var(--teal),var(--coral));border-radius:6px}.loader-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:70vh;gap:18px}.loader-parrot{position:relative;width:110px;height:110px}.loader-parrot img{width:90px;height:90px;border-radius:50%;position:absolute;top:10px;left:10px;animation:parrot-wobble 1.2s ease-in-out infinite}.loader-ring{position:absolute;inset:0;border-radius:50%;border:4px solid color-mix(in srgb,var(--teal) 30%,transparent);border-top-color:var(--coral);animation:ring-spin 1s linear infinite}.loader-text{color:var(--hint);font-size:14px}@keyframes ring-spin{to{transform:rotate(360deg)}}@keyframes parrot-wobble{0%,to{transform:rotate(-6deg)}50%{transform:rotate(6deg)}}.back-btn{border:none;background:none;color:var(--teal);font-size:15px;font-weight:600;padding:4px 0 12px;cursor:pointer}.passage{white-space:pre-wrap;font-size:14px;line-height:1.55}.option{display:flex;align-items:center;gap:10px;padding:10px 12px;margin:6px 0;border-radius:10px;background:var(--bg-secondary);font-size:14px;cursor:pointer}.option.selected{outline:2px solid var(--teal);background:color-mix(in srgb,var(--teal) 12%,var(--bg-secondary))}.option input{accent-color:var(--teal)}.gap-input,.essay-input{width:100%;border:1px solid var(--bg-secondary);border-radius:10px;padding:10px 12px;font-size:14px;font-family:inherit;background:var(--bg);color:var(--text)}.essay-input{resize:vertical;line-height:1.5}.card.ok{border-left:4px solid var(--teal)}.card.wrong{border-left:4px solid var(--coral)}.explain{margin-top:6px;font-size:13px;color:var(--hint)}.premium-badge{display:inline-block;background:var(--coral);color:#fff;font-size:11px;font-weight:700;padding:2px 8px;border-radius:8px;margin-left:6px;vertical-align:middle}.section-header{font-size:13px;font-weight:700;color:var(--hint);text-transform:uppercase;letter-spacing:.04em;margin:14px 4px 8px}.deck-row{display:flex;align-items:center;gap:10px;cursor:pointer}.word-input{min-height:96px;margin-bottom:10px}.flash-head{display:flex;align-items:center;flex-wrap:wrap;gap:6px;margin-bottom:4px}.chip{font-size:11px;padding:2px 8px;border-radius:999px;background:var(--bg-secondary);color:var(--hint)}.chip-ok{background:#2a9d8f26;color:var(--teal-deep)}.chip-row{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}.translations{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0 4px}.option.small{width:auto;padding:6px 12px;font-size:14px;margin:0}.example{font-style:italic;opacity:.85;margin-top:6px;font-size:14px}.audio-btn{border:none;background:transparent;font-size:16px;cursor:pointer;margin-left:6px}.session-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.flashcard{background:var(--bg);border-radius:var(--card-radius);padding:20px 16px;margin-bottom:12px;min-height:220px;display:flex;flex-direction:column;gap:12px}.flash-front{font-size:30px;font-weight:800;text-align:center;padding:18px 0}.flash-front.small-text{font-size:19px;font-weight:600}.flash-back{border-top:1px solid var(--bg-secondary);padding-top:12px;display:flex;flex-direction:column;gap:4px}.flash-word{font-size:24px;font-weight:800;color:var(--teal-deep)}.flash-translation{font-size:18px;font-weight:600}.typing-ok{color:var(--teal);font-weight:700}.typing-bad{color:var(--coral);font-weight:700}.rating-row{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.rating{border:none;border-radius:12px;padding:10px 4px;background:var(--bg);color:var(--text);display:flex;flex-direction:column;gap:2px;font-size:13px;cursor:pointer}.rating span{font-size:11px;color:var(--hint)}.rating-1{border-bottom:3px solid var(--coral)}.rating-2{border-bottom:3px solid #f4a261}.rating-3{border-bottom:3px solid var(--teal)}.rating-4{border-bottom:3px solid var(--teal-deep)}.hero-with-video{position:relative;overflow:hidden}.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.35;pointer-events:none}.hero-content{position:relative}.paywall-video{width:100%;max-width:340px;border-radius:var(--card-radius);display:block}.guide-body h2{font-size:20px;font-weight:800;margin:6px 0 10px}.guide-body h3{font-size:16px;font-weight:700;margin:16px 0 6px;color:var(--teal-deep)}.guide-body p{font-size:15px;line-height:1.5;margin-bottom:10px}.guide-body ul,.guide-body ol{padding-left:22px;margin-bottom:10px;font-size:15px;line-height:1.5}.guide-body li{margin-bottom:4px}.guide-body a{color:var(--teal)}.skel{background:var(--bg);border-radius:var(--card-radius);margin-bottom:12px;position:relative;overflow:hidden}.skel:after{content:"";position:absolute;inset:0;transform:translate(-100%);background:linear-gradient(90deg,transparent 0%,color-mix(in srgb,var(--hint) 12%,transparent) 50%,transparent 100%);animation:shimmer 1.3s ease-in-out infinite;animation-delay:inherit}.skel-hero{padding:18px;min-height:112px;background:linear-gradient(135deg,color-mix(in srgb,var(--teal) 35%,var(--bg)),color-mix(in srgb,var(--teal-deep) 35%,var(--bg)))}.skel-card{padding:16px}.skel-row{display:flex;align-items:center;gap:12px;padding:14px 16px;margin-bottom:10px}.skel-dot{width:36px;height:36px;border-radius:12px;background:color-mix(in srgb,var(--hint) 16%,transparent);flex:none}.skel-line{height:11px;border-radius:6px;background:color-mix(in srgb,var(--hint) 16%,transparent);margin:6px 0}.skel-line.h8{height:8px}.skel-line.h14{height:14px}.skel-line.h16{height:16px}.skel-line.h28{height:26px}.skel-line.w40{width:40%}.skel-line.w45{width:45%}.skel-line.w50{width:50%}.skel-line.w60{width:60%}.skel-line.w70{width:70%}.skel-line.w90{width:90%}.skel-line.w100{width:100%}@keyframes shimmer{to{transform:translate(100%)}}@media(prefers-reduced-motion:reduce){.skel:after,.loader-parrot img{animation-duration:.01ms;animation-iteration-count:1}.tabbar button{transition:none}}