:root{color:#172033;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-text-size-adjust:100%;-moz-text-size-adjust:100%;text-size-adjust:100%;background:#f6f8fb;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html{background:#f6f8fb;min-width:320px}body{min-width:320px;margin:0;overflow-x:hidden}button,input,select,textarea{min-width:0;font-family:inherit}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline-offset:2px;outline:3px solid #2563eb47}button{-webkit-tap-highlight-color:transparent}img,svg,video,canvas{max-width:100%}.app-shell{color:#172033;background:#f6f8fb;grid-template-columns:280px minmax(0,1fr);width:100%;min-height:100svh;display:grid;overflow-x:hidden}.sidebar{background:#fff;border-right:1px solid #dfe6ef;flex-direction:column;gap:28px;height:100vh;padding:24px;display:flex;position:sticky;top:0}.brand{cursor:pointer;align-items:center;gap:12px;display:flex}.brand-mark{color:#fff;background:#2563eb;border-radius:8px;place-items:center;width:48px;height:48px;font-weight:800;display:grid}.brand strong,.brand span{display:block}.brand span,.muted,.stat span,.metric span,.side-progress small,.map-node small,.lesson-card p,.achievement p,.mistake-card p,.term-details dd,.example-box span{color:#637083}.nav{gap:8px;display:grid}.nav-button,.reset-button,.text-button,.lesson-card,.map-node,.option,.primary-button,.secondary-button,.icon-button,.compact-button{font:inherit;cursor:pointer;border:0}.nav-button{color:#40506a;text-align:left;background:0 0;border-radius:8px;align-items:center;gap:10px;padding:12px;display:flex}.nav-button:first-child.active,.nav-button:first-child:hover{color:#1d4ed8;background:#e8f0ff}.nav-button:nth-child(3).active,.nav-button:nth-child(3):hover{color:#0f766e;background:#dff8f1}.nav-button:nth-child(6).active,.nav-button:nth-child(6):hover{color:#4f46e5;background:#eef2ff}.nav-button svg,.stat svg,.level-card svg,.node-icon svg,.empty-state svg{width:20px;height:20px}.nav-button.active,.nav-button:hover{color:#12366f;background:#e8f0ff}.side-progress{background:#f2f6fb;border-radius:8px;gap:8px;margin-top:auto;padding:16px;display:grid}.main{min-width:0;padding:28px}.app-shell *,.app-shell :before,.app-shell :after{min-width:0}.app-shell h1,.app-shell h2,.app-shell h3,.app-shell p,.app-shell strong,.app-shell span,.app-shell small,.app-shell dd,.app-shell button{overflow-wrap:anywhere}.topbar{justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:24px;display:flex}.eyebrow{color:#64748b;letter-spacing:0;margin:0 0 6px;font-size:13px;font-weight:700}h1,h2,h3,p{margin:0}h1{font-size:34px;line-height:1.15}h2{font-size:22px;line-height:1.25}h3{font-size:18px}.stats-row,.metric-grid,.lesson-row,.lesson-meta,.practice-head,.lesson-actions,.practice-actions,.mistake-actions,.mini-achievements,.mastery-overview{gap:12px;display:flex}.mission-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.mission{background:#fbfdff;border:1px solid #dfe6ef;border-radius:8px;grid-template-columns:42px 1fr auto;align-items:center;gap:12px;min-width:0;padding:16px;display:grid}.mission.complete{background:#f0fdf4;border-color:#86efac}.mission-icon{color:#1d4ed8;background:#e8f0ff;border-radius:8px;place-items:center;width:42px;height:42px;display:grid}.mission.complete .mission-icon{color:#166534;background:#dcfce7}.mission p{color:#637083;margin:4px 0 8px}.stats-row.compact{flex-wrap:wrap;justify-content:flex-end}.stat{background:#fff;border:1px solid #dfe6ef;border-radius:8px;grid-template-columns:auto 1fr;align-items:center;gap:2px 8px;min-width:110px;padding:12px;display:grid}.stat strong{grid-column:2}.dashboard-grid{grid-template-columns:1.4fr 1fr;gap:18px;display:grid}.focus-panel{color:#fff;background:linear-gradient(135deg,#1d4ed8,#0f766e);border-radius:8px;grid-column:1/-1;justify-content:space-between;gap:20px;padding:24px;display:flex}.focus-panel .eyebrow,.focus-panel .muted{color:#dbeafe}.hero-progress-copy{color:#fff;margin-top:10px;font-weight:800}.track-progress-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:16px;display:grid}.track-progress{background:#ffffff24;border-radius:8px;gap:8px;padding:12px;display:grid}.track-progress div{color:#fff;justify-content:space-between;gap:10px;font-size:14px;display:flex}.track-progress .progress-bar{background:#ffffff42}.track-progress .progress-bar span{background:#fff}.focus-panel h2{max-width:680px;margin-bottom:10px;font-size:28px}.hero-cta{color:#12366f;min-height:46px;font:inherit;cursor:pointer;background:#fff;border:0;border-radius:8px;align-items:center;gap:8px;margin-top:18px;padding:0 18px;font-weight:900;display:inline-flex}.level-card{background:#ffffff24;border-radius:8px;align-content:center;gap:8px;min-width:210px;padding:18px;display:grid}.compact-level{grid-template-columns:auto 1fr;align-items:center;min-width:190px}.compact-level svg{grid-row:span 3}.compact-level small{color:#dbeafe}.metric-grid{grid-column:1/-1}.dashboard-grid>.metric-grid{display:none}.metric{background:#fff;border:1px solid #dfe6ef;border-radius:8px;flex:1;padding:18px}.metric strong{margin-top:8px;font-size:28px;display:block}.section-block{background:#fff;border:1px solid #dfe6ef;border-radius:8px;min-width:0;padding:20px;box-shadow:0 8px 22px #0f172a0a}.section-block.wide{grid-column:1/-1}.section-head,.region-head{justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.text-button{color:#2563eb;background:0 0;font-weight:700}.lesson-row{flex-wrap:wrap}.lesson-card{min-height:148px;color:inherit;text-align:left;background:#f8fbff;border:1px solid #dfe6ef;border-radius:8px;flex:220px;align-content:space-between;gap:10px;padding:18px;display:grid}.lesson-card:hover,.map-node:not(:disabled):hover,.option:hover{border-color:#8ab4ff;transform:translateY(-1px);box-shadow:0 12px 28px #1c39691f}.status,.chip{color:#1d4ed8;background:#e8f0ff;border-radius:999px;align-items:center;width:fit-content;padding:6px 10px;font-size:13px;font-weight:700;display:inline-flex}.quick-sentence-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.quick-sentence{background:#fbfdff;border:1px solid #dfe6ef;border-radius:8px;align-content:start;gap:10px;min-width:0;padding:16px;display:grid;box-shadow:0 8px 18px #0f172a0a}.quick-sentence.done{background:#f0fdf4;border-color:#86efac}.quick-sentence strong{color:#12366f;overflow-wrap:anywhere;font-size:19px}.quick-sentence p{color:#40506a}.sentence-phonetic{color:#12366f;background:#eef4ff;border-radius:8px;padding:10px 12px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:14px;line-height:1.55}.sentence-translation{color:#14532d;background:#f0fdf4;border-radius:8px;padding:10px 12px;font-weight:700}.sentence-actions{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.sentence-actions .compact-button{width:100%;min-width:0}.phrase-progress{gap:6px;min-width:min(260px,100%);margin-top:8px;display:grid}.phrase-progress span{color:#40506a;font-size:14px;font-weight:800}.phrase-details{gap:8px;margin:0;display:grid}.phrase-details div{gap:3px;display:grid}.phrase-details dt{color:#12366f;font-size:13px;font-weight:900}.phrase-details dd{color:#40506a;margin:0;font-size:14px}.urgent-tools{background:#f7fffb;border-color:#b7d7c8}.urgent-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.urgent-card{background:#fff;border:1px solid #d6e7dd;border-radius:8px;gap:12px;min-width:0;padding:18px;display:grid}.urgent-icon{color:#fff;background:#0f766e;border-radius:8px;place-items:center;width:46px;height:46px;display:grid}.urgent-card h3{color:#12366f}.urgent-card p{color:#40506a}.urgent-card textarea{resize:vertical;width:100%;min-height:96px;font:inherit;border:1px solid #cbd5e1;border-radius:8px;padding:12px}.toolkit-grid,.route-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;display:grid}.toolkit-card,.route-card{background:#fbfdff;border:1px solid #dfe6ef;border-radius:8px;align-content:start;gap:8px;min-width:0;padding:14px;display:grid;box-shadow:0 8px 18px #0f172a0a}.toolkit-head{justify-content:space-between;align-items:center;gap:8px;display:flex}.toolkit-head strong,.route-card strong{color:#12366f;overflow-wrap:anywhere}.toolkit-head .icon-button{width:38px;min-height:38px}.pronunciation{color:#14532d;background:#dcfce7;border-radius:8px;width:fit-content;padding:4px 8px;font-size:13px;font-weight:800}.toolkit-card p,.route-card p,.toolkit-card small{color:#40506a}.compact-toolkit{margin-top:12px}.more-panel{display:block}.more-panel:not([open])>:not(summary){display:none!important}.more-panel summary{color:#12366f;cursor:pointer;justify-content:space-between;align-items:center;gap:12px;min-height:42px;font-weight:900;list-style:none;display:flex}.more-panel summary::-webkit-details-marker{display:none}.more-panel summary:after{content:"+";color:#1d4ed8;background:#e8f0ff;border-radius:8px;place-items:center;width:28px;height:28px;display:grid}.more-panel[open] summary{margin-bottom:14px}.more-panel[open] summary:after{content:"-"}.toolkit-preview .progress-bar{margin-bottom:12px}.status.done,.chip.success{color:#166534;background:#dcfce7}.course-map{gap:22px;display:grid}.course-region{background:#fff;border:1px solid #dfe6ef;border-radius:8px;padding:22px}.zone-course{gap:12px;display:grid}.zone-course+.zone-course{border-top:1px solid #edf1f6;margin-top:22px;padding-top:20px}.zone-course-title{gap:4px;display:grid}.zone-course-title strong{color:var(--accent);font-size:18px}.zone-course-title span{color:#637083;font-size:14px}.region-count{background:#e8f0ff;background:color-mix(in srgb, var(--accent) 12%, white);color:var(--accent);border-radius:8px;padding:8px 12px;font-weight:800}.map-path{grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;display:grid}.route-path{position:relative}.route-path:before{content:"";background:color-mix(in srgb, var(--accent) 28%, white);border-radius:999px;height:3px;position:absolute;top:44px;left:8%;right:8%}.route-path:has(.map-node.completed):before{background:linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 28%, white))}.map-node{z-index:1;color:#172033;text-align:left;background:#fbfdff;border:1px solid #dfe6ef;border-radius:8px;align-content:start;gap:8px;min-height:170px;padding:16px;transition:transform .2s,box-shadow .2s,border-color .2s;display:grid;position:relative}.map-node:disabled{cursor:not-allowed;opacity:.55}.map-node.completed{border-color:#8ab4ff;border-color:color-mix(in srgb, var(--accent) 40%, white);background:#f2f7ff;background:color-mix(in srgb, var(--accent) 9%, white)}.map-node.completed:after{content:"已通关";color:#14532d;background:#dcfce7;border-radius:999px;padding:4px 8px;font-size:12px;font-weight:900;position:absolute;top:12px;right:12px}.map-node.current{border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb, var(--accent) 14%, transparent), 0 16px 30px #0f172a1f}.map-node.current .node-icon{box-shadow:0 0 0 5px color-mix(in srgb, var(--accent) 18%, transparent)}.map-node.current:after{content:"当前";color:#fff;background:var(--accent);border-radius:999px;padding:4px 8px;font-size:12px;font-weight:900;position:absolute;top:12px;right:12px}.node-icon{color:#fff;background:var(--accent);border-radius:8px;place-items:center;width:42px;height:42px;display:grid}.node-step{color:var(--accent);font-size:13px;font-weight:800}.lesson-view,.practice-view{max-width:860px;margin:0 auto}.lesson-view{padding-bottom:92px}.lesson-meta,.practice-head{flex-wrap:wrap;align-items:center;margin-bottom:14px}.practice-back-button{color:#1f3b65;min-height:34px;font:inherit;background:#fff;border:1px solid #dbe4f0;border-radius:999px;align-items:center;gap:4px;padding:0 12px;font-size:14px;font-weight:900;display:inline-flex;box-shadow:0 8px 18px #142f4d0f}.term-card,.question-card{background:#fff;border:1px solid #dfe6ef;border-radius:8px;gap:18px;padding:28px;display:grid}.term-card h2{color:#12366f;font-size:40px}.term-title-row{justify-content:space-between;align-items:center;gap:14px;display:flex}.favorite-button{color:#1d4ed8;cursor:pointer;background:#e8f0ff;border:0;border-radius:8px;flex:none;place-items:center;width:46px;height:46px;display:grid}.favorite-button.active{color:#166534;background:#dcfce7}.mastery-strip{background:#f8fbff;border-radius:8px;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;padding:12px;display:grid}.mastery-strip span,.mastery-strip strong{color:#40506a;font-size:14px}.term-card>strong{font-size:24px}.example-box{background:#f2f6fb;border-radius:8px;gap:6px;padding:18px;display:grid}.example-box p{font-weight:800}.direct-say-box{background:#f0fdf4;border:1px solid #cde7dc;border-radius:8px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:16px;padding:18px;display:grid}.direct-say-box strong{color:#14532d;overflow-wrap:anywhere;margin:4px 0 6px;font-size:20px;display:block}.direct-say-box p{color:#40506a}.work-task-box{background:#f8fbff;border:1px solid #dbe7f5;border-radius:8px;gap:10px;padding:16px;display:grid}.work-task-box div{gap:4px;display:grid}.work-task-box span{color:#637083;font-size:13px;font-weight:800}.work-task-box strong{color:#12366f;overflow-wrap:anywhere}.speak-actions{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.term-details{gap:12px;margin:0;display:grid}.term-details div{gap:4px;display:grid}.term-details dt{font-weight:800}.term-details dd{margin:0}.lesson-actions,.practice-actions{justify-content:center;margin-top:18px}.lesson-action-bar{z-index:6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff0;border:1px solid #dfe6ef;border-radius:8px;grid-template-columns:48px minmax(0,1fr) 48px;align-items:center;gap:10px;max-width:720px;margin:20px auto 0;padding:10px;display:grid;position:sticky;bottom:18px;box-shadow:0 16px 40px #0f172a29}.xp-button{position:relative}.xp-button span{color:#14532d;background:#dcfce7;border-radius:999px;padding:3px 7px;font-size:12px;animation:1.5s ease-in-out infinite xp-pop;position:absolute;top:-10px;right:12px}@keyframes xp-pop{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}.primary-button,.secondary-button,.icon-button,.reset-button,.compact-button{border-radius:8px;justify-content:center;align-items:center;gap:8px;min-height:42px;font-weight:800;display:inline-flex}.primary-button{color:#fff;background:linear-gradient(135deg,#2563eb,#0f766e);padding:0 18px;transition:transform .16s,box-shadow .16s,filter .16s;box-shadow:0 10px 18px #2563eb29}.primary-button:hover{filter:saturate(1.04);transform:translateY(-1px);box-shadow:0 14px 24px #2563eb33}.primary-button:active,.secondary-button:active,.icon-button:active,.nav-button:active,.lesson-card:active,.map-node:active{transform:translateY(1px)scale(.99)}.secondary-button{color:#1d4ed8;background:#e8f0ff;padding:0 18px}.compact-button{white-space:nowrap;min-width:92px;padding:0 12px}.primary-button:disabled,.secondary-button:disabled,.compact-button:disabled{cursor:not-allowed;opacity:.55}.icon-button{color:#1d4ed8;background:#e8f0ff;width:46px}.icon-button:disabled{opacity:.45;cursor:not-allowed}.option-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.option{min-height:58px;color:inherit;text-align:left;background:#fbfdff;border:1px solid #dfe6ef;border-radius:8px;padding:14px}.option.selected{background:#e8f0ff;border-color:#2563eb}.answer-input{min-height:54px;font:inherit;border:1px solid #cbd5e1;border-radius:8px;padding:0 14px}.feedback{border-radius:8px;gap:12px;padding:16px;display:flex}.feedback.correct{color:#14532d;background:#dcfce7}.feedback.wrong{color:#7f1d1d;background:#fee2e2}.feedback p{margin:4px 0}.complete-view{max-width:760px;margin:0 auto}.review-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.admin-grid{grid-template-columns:1.1fr .9fr;gap:16px;display:grid}.tool-layout{grid-template-columns:280px minmax(0,1fr);gap:16px;display:grid}.scenario-tabs{align-content:start;gap:10px;display:grid}.scenario-tab{color:#40506a;text-align:left;cursor:pointer;background:#fff;border:1px solid #dfe6ef;border-radius:8px;grid-template-columns:28px 1fr;align-items:center;gap:8px;min-height:74px;padding:14px;display:grid}.scenario-tab.active{color:#12366f;background:#e8f0ff;border-color:#8ab4ff}.scenario-tab small{color:#637083;grid-column:2}.tool-panel{background:#fff;border:1px solid #dfe6ef;border-radius:8px;gap:16px;padding:24px;display:grid}.scenario-prompt{color:#40506a;background:#f8fbff;border-radius:8px;padding:16px;font-weight:700}.scenario-workbench{background:#fbfdff}.scenario-frame{background:#fff;border:1px solid #dfe6ef;border-radius:8px;gap:10px;padding:16px;display:grid}.chat-frame{background:#eef6ff}.chat-bubble{border-radius:8px;max-width:82%;padding:12px 14px;font-weight:800}.chat-bubble.customer{color:#12366f;background:#fff}.chat-bubble.reply{color:#14532d;background:#dcfce7;justify-self:end}.mail-frame{border-color:#cbd5e1}.mail-toolbar{gap:6px;display:flex}.mail-toolbar span{background:#94a3b8;border-radius:999px;width:10px;height:10px}.terminal-frame{color:#dbeafe;background:#172033;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.terminal-frame code{white-space:normal;color:#fff}.quote-frame{grid-template-columns:minmax(120px,.35fr) 1fr}.quote-frame div{background:#f8fbff;border-radius:8px;gap:6px;padding:12px;display:grid}.quote-frame span{color:#637083;font-size:13px;font-weight:800}.tool-textarea{resize:vertical;width:100%;max-width:100%;min-height:170px;font:inherit;border:1px solid #cbd5e1;border-radius:8px;padding:14px;line-height:1.5}.admin-form{gap:12px;display:grid}.admin-form input,.admin-form select,.admin-form textarea{width:100%;min-height:44px;font:inherit;color:#172033;background:#fff;border:1px solid #cbd5e1;border-radius:8px;padding:10px 12px}.admin-form textarea{resize:vertical;min-height:110px}.content-row{background:#fbfdff;border:1px solid #dfe6ef;border-radius:8px;grid-template-columns:minmax(0,1fr) auto auto auto;align-items:center;gap:12px;padding:14px;display:grid}.content-row p,.content-row small{color:#637083;margin-top:4px;display:block}.danger-button{color:#991b1b;background:#fee2e2}.coach-result{color:#12366f;background:#e8f0ff;border-radius:8px;gap:8px;padding:16px;display:grid}.scenario-result{scroll-margin-top:18px}.result-reply{background:#fff;border:1px solid #86efac}.result-reply span{color:#166534;font-weight:900}.result-reply p{color:#14532d;font-size:18px}.result-score-row{justify-content:space-between;align-items:center;gap:10px;display:flex}.result-actions{flex-wrap:wrap;gap:8px;margin-top:6px;display:flex}.success-panel{color:#14532d;background:#dcfce7}.history-list{flex-wrap:wrap;gap:8px;display:flex}.review-list{gap:12px;display:grid}.review-row{background:#fbfdff;border:1px solid #dfe6ef;border-radius:8px;grid-template-columns:minmax(0,1fr) minmax(140px,220px) auto;align-items:center;gap:14px;padding:14px;display:grid}.review-row.simple{grid-template-columns:minmax(0,1fr) auto}.review-row p{color:#637083;margin-top:4px}.review-score{grid-template-columns:1fr auto;align-items:center;gap:8px;display:grid}.compact-list{align-content:start}.complete-card{text-align:center;background:#fff;border:1px solid #dfe6ef;border-radius:8px;justify-items:center;gap:16px;padding:32px;display:grid}.complete-icon{color:#fff;background:#2563eb;border-radius:8px;place-items:center;width:68px;height:68px;display:grid}.complete-icon svg{width:32px;height:32px}.bonus-banner{color:#14532d;text-align:left;background:#dcfce7;border-radius:8px;align-items:center;gap:12px;width:100%;padding:14px;display:flex}.bonus-banner.subtle{color:#12366f;background:#e8f0ff}.bonus-banner svg{flex:none}.bonus-banner strong,.bonus-banner span{display:block}.mistake-list,.achievement-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.mistake-card,.achievement{background:#fff;border:1px solid #dfe6ef;border-radius:8px;gap:16px;padding:20px;display:grid}.mistake-actions{flex-wrap:wrap}.achievement{grid-template-columns:48px 1fr;align-items:start}.achievement.unlocked{background:#f0fdf4;border-color:#86efac}.achievement-icon{color:#12366f;background:#e8f0ff;border-radius:8px;place-items:center;width:48px;height:48px;font-size:24px;display:grid}.achievement-icon svg{width:24px;height:24px}.progress-bar{background:#dbe3ef;border-radius:999px;width:100%;height:8px;overflow:hidden}.progress-bar span{border-radius:inherit;background:#2563eb;height:100%;display:block}.empty-state{color:#637083;text-align:center;align-content:center;place-items:center;gap:12px;min-height:420px;display:grid}.reset-button{color:#64748b;background:0 0;margin-top:24px;padding:0 14px}.toast{z-index:10;color:#fff;background:#172033;border-radius:8px;padding:12px 16px;position:fixed;bottom:24px;right:24px;box-shadow:0 18px 40px #0f172a33}.reward-toast{background:#12366f;grid-template-columns:42px minmax(0,1fr);align-items:center;gap:10px;min-width:280px;display:grid}.toast-badge{color:#14532d;background:#dcfce7;border-radius:8px;place-items:center;width:42px;height:42px;font-weight:900;display:grid}.reward-toast strong,.reward-toast span{display:block}.reward-toast span{color:#dbeafe;font-size:14px}.mobile-app{-webkit-font-smoothing:antialiased;text-rendering:geometricprecision;background:radial-gradient(circle at 50% 0,#ffffffe6,#0000 32%),linear-gradient(#dff5ff 0%,#eef9ff 48%,#f7fbff 100%);grid-column:1/-1;min-height:100svh;display:block}.sidebar,.main,.app-shell.show-legacy .mobile-app{display:none}.app-shell.show-legacy .sidebar{display:flex}.app-shell.show-legacy .main{display:block}.mobile-screen{color:#111827;background:linear-gradient(#ffffffb8,#f7fafde6 36%,#ecf4fcf5 100%),linear-gradient(135deg,#d9eef8 0%,#f6fbff 48%,#e7eef7 100%);max-width:1120px;min-height:100svh;margin:0 auto;padding:34px 48px 124px;position:relative;overflow-x:hidden}.mobile-screen.mobile-home-screen{background:linear-gradient(#f8fbff 0%,#edf5ff 100%);align-content:start;gap:0;width:min(100%,860px);max-width:860px;padding:0 14px 72px;display:grid;position:relative;overflow:hidden}.home-app-header{background:#fffffff0;grid-template-columns:34px minmax(0,1fr) 34px;align-items:center;gap:8px;min-height:70px;margin:0 -14px;padding:8px 24px 6px;display:grid}.home-header-icon{color:#111827;background:0 0;border:0;place-items:center;width:32px;height:32px;display:grid;position:relative}.home-header-icon svg{width:21px;height:21px}.home-header-icon.has-dot:after{content:"";background:#ff1f2d;border-radius:999px;width:7px;height:7px;position:absolute;top:5px;right:5px;box-shadow:0 0 0 2px #fff}.home-brand{justify-items:center;gap:2px;min-width:0;display:grid}.home-brand strong{color:#080b13;font-size:21px;font-weight:900;line-height:1.08}.home-brand span{color:#667089;font-size:12px;font-weight:700}.home-blue-area{z-index:0;isolation:isolate;background:radial-gradient(circle at 95% 8%,#ffffff29 0 78px,#0000 80px),radial-gradient(circle at 2% 88%,#ffffff1c 0 86px,#0000 88px),linear-gradient(#0064fffa 0%,#0479fff0 56%,#0479ffad 100%);margin:0 -14px -66px;padding:14px 14px 80px;position:relative;overflow:visible}.home-blue-area:before{content:"EQ";color:#ffffff14;font-size:92px;font-weight:900;line-height:1;position:absolute;top:4px;right:-16px;transform:rotate(-18deg)}.home-blue-area:after{content:"";z-index:-1;pointer-events:none;background:radial-gradient(at 0 0,#0069ff80 0 42%,#0000 66%),radial-gradient(at 100% 0,#0069ff7a 0 42%,#0000 66%),linear-gradient(#006eff6b 0%,#0074ff33 50%,#edf5ff00 100%);height:130px;position:absolute;bottom:-96px;left:0;right:0}.mobile-avatar{color:#fff;background:linear-gradient(135deg,#2f80ed,#21c8aa);border:0;border-radius:999px;place-items:center;width:54px;height:54px;font-weight:900;display:grid;box-shadow:0 12px 24px #1f82cd38}.mobile-avatar.large{width:76px;height:76px;margin:0 auto 10px;font-size:22px}.home-search-bar{z-index:1;color:#657086;width:100%;min-height:54px;font:inherit;text-align:left;background:#fffffffa;border:0;border-radius:999px;align-items:center;gap:12px;padding:0 20px;font-size:19px;font-weight:800;display:flex;position:relative;box-shadow:0 14px 32px #0942a229}.home-search-bar svg{color:#5f6b80;flex:none;width:24px;height:24px}.home-course-card,.home-banner-card,.mobile-card,.mobile-entry{-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:linear-gradient(#fffffffb,#fffffff0);border:1px solid #fffffff0;border-radius:22px;box-shadow:0 18px 42px #1c3b691a,inset 0 1px #fffffff5}.home-course-card{z-index:1;border-radius:26px;align-content:start;gap:11px;padding:14px;display:grid;position:relative}.home-course-main{grid-template-columns:84px minmax(0,1fr);align-items:center;gap:12px;display:grid}.home-book-cover{min-width:0}.home-book-cover img{aspect-ratio:1;object-fit:cover;object-position:center center;background:linear-gradient(135deg,#f8fbff,#eaf3ff);border-radius:18px;width:100%;display:block;box-shadow:0 12px 26px #0e64cc2e}.home-book-cover img[src*=trade-product-banner]{object-position:70% center}.home-course-info{gap:10px;min-width:0;display:grid}.home-course-title{align-items:center;gap:6px;display:flex}.home-course-title h1{color:#05070d;white-space:nowrap;flex:none;min-width:0;font-size:23px;line-height:1.08}.home-course-title button,.home-plan-head button{color:#111827;min-height:28px;font:inherit;white-space:nowrap;background:#eef0f4;border:0;border-radius:11px;align-items:center;gap:1px;padding:0 7px;font-size:12px;font-weight:800;display:inline-flex}.home-course-title button svg,.home-plan-head button svg{width:14px;height:14px}.home-progress-track{background:#e9edf4;border-radius:999px;height:6px;overflow:hidden}.home-progress-track span{border-radius:inherit;background:linear-gradient(90deg,#126dff,#1f8cff);height:100%;display:block;box-shadow:0 0 10px #126dff59}.home-course-meta{color:#58647b;justify-content:space-between;gap:10px;font-size:16px;font-weight:700;display:flex}.home-course-meta span{white-space:nowrap}.home-plan-divider{background:#d9e0ea;height:1px}.home-plan-head{justify-content:space-between;align-items:center;gap:10px;display:flex}.home-plan-head h2{color:#05070d;font-size:25px;line-height:1.15}.home-plan-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid;position:relative}.home-plan-grid:before{content:"";background:#e0e7f1;width:1px;position:absolute;top:4px;bottom:4px;left:50%}.home-plan-stat{color:#58647b;align-content:end;gap:3px;display:grid}.home-plan-value{align-items:baseline;gap:7px;min-width:0;display:flex}.home-plan-stat span{font-size:14px;font-weight:800}.home-plan-stat strong{color:#05070d;letter-spacing:0;font-size:44px;font-style:italic;font-weight:900;line-height:.92;display:inline}.home-plan-stat:first-child strong{color:#0b6eff}.home-plan-stat:nth-child(2) strong{color:#06a887}.home-plan-stat em{color:#667189;font-size:26px;font-style:normal;font-weight:700}.home-plan-actions{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.home-plan-actions button{color:#fff;min-height:52px;font:inherit;background:linear-gradient(#0b6eff,#0059f4);border:0;border-radius:13px;font-size:23px;font-weight:900;transition:transform .16s,box-shadow .16s;box-shadow:0 12px 22px #0057f440}.home-plan-actions button:nth-child(2){background:linear-gradient(#07b896,#009f86);box-shadow:0 12px 22px #009f8640}.home-plan-actions button:active,.home-banner-card:active,.home-search-bar:active{transform:translateY(1px)scale(.99)}.home-plan-actions button:disabled{cursor:not-allowed;color:#ffffffd1;background:linear-gradient(#07b896b8,#009f86b8);box-shadow:0 10px 18px #009f8629}.home-feature-list{gap:8px;margin-top:10px;display:grid}.home-banner-card{min-height:106px;color:inherit;text-align:left;font:inherit;border:0;grid-template-columns:minmax(0,1fr) 42%;align-items:center;gap:10px;padding:12px 14px;transition:transform .16s,box-shadow .16s;display:grid;overflow:hidden}.home-banner-copy{gap:6px;min-width:0;display:grid}.home-banner-copy strong{color:#05070d;font-size:22px;font-weight:900;line-height:1.12}.home-banner-copy small{color:#63708a;font-size:13px;font-weight:800;line-height:1.25}.home-banner-card img{object-fit:cover;object-position:right center;filter:saturate(1.05);border-radius:18px;width:100%;height:86px}.home-banner-card img[src*=trade-product-banner]{object-position:78% center}@media (width>=720px){.mobile-screen.mobile-home-screen{background:linear-gradient(#f8fbff 0%,#edf5ff 100%);padding:0 30px 118px}.home-app-header{grid-template-columns:48px minmax(0,1fr) 48px;min-height:104px;margin:0 -30px;padding:16px 40px 12px}.home-header-icon{width:44px;height:44px}.home-header-icon svg{width:28px;height:28px}.home-brand strong{font-size:32px}.home-brand span{font-size:18px}.home-blue-area{margin:0 -30px -54px;padding:20px 30px 76px}.home-search-bar{min-height:68px;padding:0 28px;font-size:24px}.home-course-card{border-radius:30px;gap:16px;padding:22px}.home-course-main{grid-template-columns:132px minmax(0,1fr);gap:24px}.home-course-title h1{font-size:32px}.home-course-title button,.home-plan-head button{border-radius:16px;min-height:38px;padding:0 14px;font-size:16px}.home-course-meta{font-size:22px}.home-plan-head h2{font-size:30px}.home-plan-stat span{font-size:18px}.home-plan-stat strong{font-size:60px}.home-plan-stat em{font-size:32px}.home-plan-actions button{border-radius:18px;min-height:64px;font-size:28px}.home-feature-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.home-banner-card{min-height:110px;padding:16px 22px}.home-banner-copy strong{font-size:28px}.home-banner-copy small{font-size:17px}.home-banner-card img{height:88px}.mobile-bottom-nav{padding:5px 8px 7px}.mobile-bottom-nav button{min-height:48px}}.mobile-bottom-nav{z-index:40;width:min(860px,100%);padding:6px 8px max(8px, env(safe-area-inset-bottom));-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#fffffff5;border-radius:18px 18px 0 0;grid-template-columns:repeat(4,minmax(0,1fr));gap:2px;display:grid;position:fixed;bottom:0;left:50%;right:auto;transform:translate(-50%);box-shadow:0 -8px 24px #142f4d1f,inset 0 1px #ffffffe6}.mobile-bottom-nav button{color:#758096;min-height:52px;font:inherit;background:0 0;border:0;border-radius:13px;align-content:center;justify-items:center;gap:2px;font-size:12px;font-weight:900;display:grid}.mobile-bottom-nav button span{white-space:nowrap}.mobile-bottom-nav button.active{color:#0068ff;background:#eef5ff}@media (width>=720px){.mobile-bottom-nav{padding:5px 8px 7px}.mobile-bottom-nav button{min-height:48px}}.mobile-page{align-content:start;gap:16px;display:grid}.mobile-page>h1{margin:4px 0 8px;font-size:26px}.mobile-entry{min-height:96px;color:inherit;text-align:left;font:inherit;border:0;grid-template-columns:46px minmax(0,1fr) 24px;align-items:center;gap:14px;padding:18px;display:grid}.mobile-entry>svg{color:#2f80ed;background:#e8f0ff;border-radius:16px;width:46px;height:46px;padding:12px}.mobile-entry strong,.mobile-card strong{color:#172033;font-size:18px;display:block}.mobile-entry small,.mobile-card p{color:#607187;margin-top:6px;line-height:1.45;display:block}.mobile-entry.featured{color:#fff;background:linear-gradient(135deg,#2f66ef,#18b7b2)}.mobile-entry.featured strong,.mobile-entry.featured small{color:#fff}.mobile-entry.featured>svg{color:#fff;background:#ffffff29}.mobile-card{padding:18px}.profile-hero{text-align:center;background:#ffffffc2;border-radius:30px;padding:24px}.profile-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.mobile-card.simple{gap:6px;display:grid}.task-card{gap:8px;display:grid}.task-card span,.today-reward,.wordbook-card span{color:#0f766e;background:#dff8f1;border-radius:999px;width:fit-content;padding:7px 12px;font-weight:900}.today-reward{text-align:center;width:100%}.study-plan-hero{background:linear-gradient(135deg,#2f80ed1f,#0000 46%),#ffffffd1;gap:8px;padding:24px;display:grid}.study-plan-hero span{color:#1d4ed8;background:#e8f0ff;border-radius:999px;width:fit-content;padding:7px 12px;font-weight:900}.study-plan-hero h2{color:#172033;font-size:clamp(28px,6vw,42px)}.study-plan-hero p,.study-plan-card p{color:#607187;font-weight:800}.study-plan-card{gap:16px;display:grid}.study-plan-options{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.study-plan-options button{color:#315170;min-height:48px;font:inherit;background:#ffffffc2;border:1px solid #b7cde6e0;border-radius:16px;font-weight:900}.study-plan-options button.active{color:#fff;background:linear-gradient(135deg,#2f66ef,#18b7b2);border-color:#2f66ef;box-shadow:0 12px 24px #2f66ef2e}.study-plan-summary{justify-content:space-between;align-items:center;gap:14px;display:flex}.study-plan-summary strong{color:#172033;font-size:24px}.study-plan-summary span{color:#315170;text-align:right;font-weight:900}.study-plan-progress{background:#d8e5f2;border-radius:999px;height:12px;overflow:hidden}.study-plan-progress span{border-radius:inherit;background:linear-gradient(90deg,#2f66ef,#18b7b2);height:100%;display:block}.mobile-search-input{min-height:54px;font:inherit;background:#ffffffd1;border:0;border-radius:20px;padding:0 16px;box-shadow:0 12px 28px #1f568e1a}.lookup-result div{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.wordbook-card{gap:8px;display:grid}.reading-recommend{gap:10px;display:grid}.reading-listen-screen{align-content:start;gap:18px;padding-bottom:144px;display:grid}.reading-listen-screen>*{width:100%;max-width:840px;margin-left:auto;margin-right:auto}.reading-hero,.reading-player-card,.reading-meta,.reading-control-bar{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#ffffffc2;border:1px solid #ffffffbd;border-radius:28px;box-shadow:0 18px 42px #1f568e1f}.reading-hero{gap:8px;padding:22px;display:grid}.reading-hero span{color:#0f766e;background:#dff8f1;border-radius:999px;width:fit-content;padding:7px 12px;font-weight:900}.reading-hero h1{color:#172033;font-size:clamp(30px,6vw,46px)}.reading-hero p{color:#607187;font-weight:800;line-height:1.5}.reading-player-card{gap:18px;padding:24px;display:grid}.reading-player-head{justify-content:space-between;align-items:flex-start;gap:14px;display:flex}.reading-player-head span,.reading-player-head strong{color:#2f66ef;font-weight:900;display:block}.reading-player-head h2{color:#172033;margin-top:4px;font-size:24px}.reading-player-head strong{color:#315170;white-space:nowrap;background:#e8f0ff;border-radius:999px;padding:7px 12px}.reading-progress{background:#9ab4cb57;border-radius:999px;height:9px;overflow:hidden}.reading-progress i{border-radius:inherit;background:linear-gradient(90deg,#2f66ef,#18b7b2);height:100%;display:block}.reading-lines{gap:14px;display:grid}.reading-line{background:#ebf4ffb8;border-radius:22px;padding:18px}.reading-line p{color:#10243f;font-size:clamp(22px,4vw,34px);font-weight:900;line-height:1.28}.reading-line span{color:#5c6f88;margin-top:10px;font-size:clamp(15px,2.6vw,19px);font-weight:800;line-height:1.55;display:block}.reading-meta{color:#315170;justify-content:space-between;gap:10px;padding:12px 16px;font-weight:900;display:flex}.reading-control-bar{z-index:35;grid-template-columns:minmax(0,1fr) 82px;gap:12px;padding:12px;display:grid;position:sticky;bottom:100px}.reading-control-bar .primary-button,.reading-control-bar .secondary-button{border-radius:18px;justify-content:center;align-items:center;gap:8px;min-height:54px;font-size:18px;font-weight:900;display:inline-flex}.reading-control-bar .secondary-button.active{color:#fff;background:linear-gradient(135deg,#2f66ef,#18b7b2);box-shadow:0 12px 24px #2f66ef2e}.word-train-screen{background:radial-gradient(circle at 50% 8%,#ffffffeb,#0000 34%),linear-gradient(#f9fafc 0%,#f6f7fa 56%,#eef2f7 100%);grid-template-rows:auto auto minmax(220px,1fr) auto auto;align-content:stretch;gap:14px;padding-bottom:126px;display:grid}.word-train-screen>*{width:100%;max-width:760px;margin-left:auto;margin-right:auto}.word-train-top{color:#a7afba;grid-template-columns:40px minmax(0,1fr) 1px;align-items:center;gap:12px;display:grid}.word-train-top button{color:#1f2937;background:0 0;border:0;border-radius:999px;place-items:center;width:40px;height:40px;display:grid}.word-train-top svg{width:24px;height:24px}.word-train-top div{border-right:2px solid #9aa5b43d;width:fit-content;min-width:86px;padding-right:20px;font-size:13px;font-weight:900;line-height:1.3;display:grid}.word-train-progress{background:#d0d7e06b;border-radius:999px;height:4px;overflow:hidden}.word-train-progress span{border-radius:inherit;background:linear-gradient(90deg,#2f66ef,#18b7b2);height:100%;display:block}.word-train-prompt{text-align:center;align-content:center;justify-items:center;gap:12px;min-height:0;display:grid}.word-train-prompt>span{color:#a8b0bb;font-size:13px;font-weight:850}.word-train-prompt h1{color:#2563eb;overflow-wrap:anywhere;max-width:100%;font-size:clamp(40px,7vw,62px);font-weight:760;line-height:1.08}.word-train-prompt.cn-mode h1{max-width:680px;font-size:clamp(34px,6vw,54px);line-height:1.16}.word-train-prompt p{color:#a0a8b3;max-width:560px;font-size:clamp(19px,3vw,25px);font-weight:760;line-height:1.45}.word-train-prompt button{color:#2f66ef;background:#ffffffdb;border:0;border-radius:999px;place-items:center;width:40px;height:40px;display:grid;box-shadow:0 10px 22px #1f568e14,inset 0 1px #ffffffdb}.word-train-options{align-self:end;gap:10px;display:grid}.word-train-option{color:#1f2937;min-height:64px;font:inherit;text-align:left;background:linear-gradient(#fffffffa,#fafbfdf0);border:1px solid #e6ebf2d1;border-radius:13px;padding:14px 20px;font-size:clamp(18px,2.8vw,24px);font-weight:760;line-height:1.35;transition:transform .16s,border-color .16s,background .16s,box-shadow .16s;box-shadow:0 10px 24px #142f4d0e,inset 0 1px #ffffffeb}.word-train-option:active{transform:translateY(1px)scale(.99)}.word-train-option.correct{color:#065f46;background:#dff8ee;border-color:#10b981b8}.word-train-option.wrong{color:#991b1b;background:#fee2e2;border-color:#f87171bd}.word-train-feedback,.word-train-complete{color:#315170;text-align:center;background:#ffffffe6;border-radius:18px;padding:12px 16px;font-weight:900;box-shadow:0 10px 24px #142f4d0f}.word-train-feedback.correct{color:#047857}.word-train-feedback.wrong{color:#b91c1c}.word-train-complete{gap:14px;margin-top:18vh;display:grid}.word-train-complete strong{color:#172033;font-size:26px}.word-train-complete p{color:#607187;font-weight:800}.self-check-screen{background:radial-gradient(circle at 50% 34%,#fffffffa,#0000 42%),linear-gradient(#fbfbfd 0%,#f7f8fb 58%,#f1f4f8 100%);grid-template-rows:auto minmax(0,1fr) auto;gap:18px;min-height:100svh;padding:18px 20px 114px;display:grid;position:relative}.self-check-screen>*{width:100%;max-width:760px;margin-left:auto;margin-right:auto}.self-check-top{color:#a7afba;grid-template-columns:40px minmax(0,1fr) 1px;align-items:center;gap:12px;font-size:14px;font-weight:900;display:grid}.self-check-top button{color:#111827;background:0 0;border:0;border-radius:999px;place-items:center;width:40px;height:40px;display:grid}.self-check-top svg{width:25px;height:25px}.self-check-top span{border-right:2px solid #9aa5b43d;width:fit-content;min-width:94px;padding-right:22px}.self-check-word{text-align:center;place-items:center;display:grid}.self-check-word h1{color:#242b39;letter-spacing:0;overflow-wrap:anywhere;max-width:100%;font-size:clamp(40px,10vw,74px);font-weight:760;line-height:1.08}.self-check-actions{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.self-check-actions button{color:#283142;min-height:72px;font:inherit;background:#fffffffa;border:1px solid #ecf0f6eb;border-radius:3px;font-size:clamp(24px,6vw,34px);font-weight:500;transition:transform .16s,box-shadow .16s;box-shadow:0 18px 34px #142f4d0e,inset 0 1px #fffffff5}.self-check-actions button:active{transform:translateY(1px)scale(.99)}.self-check-modal{z-index:70;padding:18px 16px max(96px, calc(86px + env(safe-area-inset-bottom)));place-items:end center;display:grid;position:fixed;inset:0}.self-check-backdrop{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#0f172a47;border:0;position:absolute;inset:0}.self-check-detail{z-index:1;background:#fffffff5;border:1px solid #ffffffe0;border-radius:28px;gap:12px;width:min(100%,520px);padding:22px;display:grid;position:relative;box-shadow:0 24px 54px #142f4d2e}.self-check-detail>span{color:#1d4ed8;background:#e8f0ff;border-radius:999px;width:fit-content;padding:6px 10px;font-size:12px;font-weight:900}.self-check-detail h2{color:#111827;overflow-wrap:anywhere;padding-right:46px;font-size:clamp(34px,8vw,48px);font-weight:850;line-height:1.08}.self-check-phonetic{color:#7b8494;font-size:19px;font-weight:800}.self-check-close{color:#475569;background:#f1f5f9;border:0;border-radius:999px;place-items:center;width:38px;height:38px;display:grid;position:absolute;top:16px;right:16px}.self-check-speak{color:#fff;width:fit-content;min-height:38px;font:inherit;background:linear-gradient(135deg,#2f66ef,#18b7b2);border:0;border-radius:999px;align-items:center;gap:8px;padding:0 13px;font-size:14px;font-weight:900;display:inline-flex;box-shadow:0 12px 24px #2f66ef2e}.self-check-meaning{background:#f6f8fb;border-radius:18px;gap:6px;padding:14px;display:grid}.self-check-meaning strong{color:#64748b;font-size:13px;font-weight:900}.self-check-meaning p{color:#172033;font-size:18px;font-weight:850;line-height:1.45}.self-check-meaning small{color:#64748b;font-size:15px;font-weight:760;line-height:1.45}.self-check-complete{align-self:center;margin-top:0}.study-screen{align-content:start;gap:22px;padding-bottom:148px;display:grid}.study-screen>*{width:100%;max-width:760px;margin-left:auto;margin-right:auto}.study-top-card{-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#ffffff9e;border-radius:30px;grid-template-columns:44px minmax(0,1fr) 44px;align-items:center;gap:14px;padding:20px;display:grid;box-shadow:0 18px 38px #2563eb1f}.study-top-card strong{color:#162033;text-overflow:ellipsis;white-space:nowrap;font-size:18px;font-weight:900;display:block;overflow:hidden}.study-back,.study-more{color:#4b5d76;width:44px;height:44px;font:inherit;background:#ffffffa3;border:0;border-radius:999px;place-items:center;font-weight:900;display:grid}.study-back svg{width:24px;height:24px}.study-progress{background:#9ab4cb6b;border-radius:999px;height:8px;margin-top:18px;overflow:hidden}.study-progress span{border-radius:inherit;background:linear-gradient(90deg,#22c7a9,#2f80ed);height:100%;display:block}.study-image-card{aspect-ratio:4/3;background:linear-gradient(135deg,#ffffff42,#0000 38%),linear-gradient(135deg,#bbdefb,#e8f7ff);border:8px solid #ffffffe6;border-radius:30px;place-items:center;min-height:230px;display:grid;position:relative;overflow:hidden;box-shadow:0 24px 54px #1f568e29}.study-image-card.green,.study-image-card.cyan{background:linear-gradient(135deg,#ffffff47,#0000 38%),linear-gradient(135deg,#c8f4e5,#e7fbff)}.study-image-card.indigo{background:linear-gradient(135deg,#ffffff42,#0000 38%),linear-gradient(135deg,#cad7ff,#eef7ff)}.study-image-card.red{background:linear-gradient(135deg,#ffffff42,#0000 38%),linear-gradient(135deg,#ffd5d5,#edf6ff)}.study-image-card:before,.study-image-card:after{content:"";background:#ffffff61;border-radius:999px;position:absolute}.study-image-card:before{width:220px;height:220px;top:-72px;right:-74px}.study-image-card:after{width:150px;height:150px;bottom:-52px;left:-44px}.study-image-card>span{z-index:1;color:#20517e;background:#ffffffb8;border-radius:999px;padding:7px 12px;font-size:13px;font-weight:900;position:absolute;bottom:16px;left:18px}.study-visual{z-index:1;background:#ffffff8a;border-radius:44px;place-items:center;width:min(46vw,220px);height:min(46vw,220px);font-size:clamp(62px,16vw,126px);display:grid;box-shadow:inset 0 0 0 1px #ffffff6b,0 18px 40px #1f568e1f}.study-word-main{text-align:center;justify-items:center;gap:12px;display:grid}.study-word-main h1{color:#172033;font-size:clamp(42px,9vw,68px);line-height:1.02}.sound-line{color:#61728a;justify-content:center;align-items:center;gap:9px;display:inline-flex}.sound-line>span{color:#4a5d75;background:#ffffff94;border-radius:9px;padding:4px 8px;font-weight:900}.sound-line p{margin:0;font-size:18px;font-weight:800}.sound-line button{color:#2f66ef;background:#ffffffb8;border:0;border-radius:999px;place-items:center;width:38px;height:38px;display:grid}.sound-line svg{width:19px;height:19px}.study-example,.review-hint{color:#2c3c52;max-width:660px;margin:4px auto 0;font-size:18px;line-height:1.58}.study-example p{margin:0;font-weight:900}.study-example span{color:#61728a;margin-top:4px;display:block}.study-options{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.study-option{color:#172033;min-height:116px;font:inherit;text-align:left;background:#ffffff8a;border:2px solid #ffffff85;border-radius:24px;padding:18px;font-size:clamp(17px,3vw,25px);font-weight:900;line-height:1.35;transition:transform .18s,box-shadow .18s,border-color .18s,background .18s;box-shadow:0 16px 34px #1f568e1a}.study-option:hover{transform:translateY(-2px);box-shadow:0 20px 40px #1f568e24}.study-option:active{transform:translateY(1px)scale(.99)}.study-option.correct{color:#065f46;background:#dff8ee;border-color:#10b981b8}.study-option.wrong{color:#991b1b;background:#fee2e2;border-color:#f87171b8}.study-feedback{background:#ffffffc2;border-radius:24px;grid-template-columns:minmax(0,1fr);align-items:center;gap:8px 14px;padding:16px 18px;display:grid;box-shadow:0 16px 34px #1f568e1f}.study-feedback strong,.study-feedback span{display:block}.study-feedback strong{color:#172033;font-size:18px}.study-feedback span{color:#607187;font-weight:800}.study-feedback.correct{border:1px solid #10b9813d}.study-feedback.wrong{border:1px solid #f871713d}.study-complete-card{text-align:center;background:#ffffffc2;border-radius:28px;justify-items:center;gap:14px;padding:28px;display:grid;box-shadow:0 18px 42px #1f568e1f}.study-complete-card strong{color:#172033;font-size:26px}.study-complete-card p{color:#607187;max-width:520px;font-weight:800;line-height:1.55}.study-complete-card div{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;width:min(100%,420px);display:grid}.monster-screen{color:#eef6ff;background:radial-gradient(circle at 52% 2%,#3b82f647,#0000 31%),radial-gradient(circle at 12% 22%,#0ea5e92e,#0000 27%),linear-gradient(#071527 0%,#0c1d34 46%,#101827 100%);align-content:start;gap:16px;padding-bottom:138px;display:grid}.monster-screen>*{width:100%;max-width:940px;margin-left:auto;margin-right:auto}.monster-header,.monster-controls,.monster-hud,.monster-result{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:linear-gradient(#4d709785,#162b4694);border:1px solid #c7def52e;border-radius:26px;box-shadow:0 18px 44px #0000003d,inset 0 1px #ffffff1f}.monster-header{grid-template-columns:44px minmax(0,1fr) auto;align-items:center;gap:14px;padding:16px;display:grid}.monster-header strong,.monster-header span{display:block}.monster-header strong{color:#f8fbff;font-size:20px;font-weight:900}.monster-header span{color:#b9c9dc;font-size:14px;font-weight:800}.monster-xp{background:#ffffff1f;border-radius:999px;padding:8px 12px;box-shadow:inset 0 0 0 1px #ffffff1a;color:#f8fbff!important}.monster-controls{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;padding:14px;display:grid}.monster-controls>div{gap:8px;display:grid}.monster-controls span{color:#c6d4e5;font-size:13px;font-weight:900}.monster-controls div div{flex-wrap:wrap;gap:7px;display:flex}.monster-controls button{color:#d5e2f2;min-width:42px;min-height:34px;font:inherit;background:#e0eeff21;border:0;border-radius:999px;font-size:13px;font-weight:900;box-shadow:inset 0 0 0 1px #ffffff14}.monster-controls button.active{color:#fff;background:linear-gradient(135deg,#18b6ff,#2865ff);box-shadow:0 10px 26px #18b6ff47,inset 0 1px #ffffff38}.monster-hud{z-index:8;color:#dceafe;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#040c1770;border:1px solid #ffffff24;border-radius:999px;grid-template-columns:auto minmax(0,1fr) auto auto;align-items:center;gap:10px;padding:10px 14px;font-weight:900;display:grid;position:absolute;top:16px;left:18px;right:18px;box-shadow:inset 0 1px #ffffff1f}.hp-bar{background:#0a1422a3;border-radius:999px;height:12px;overflow:hidden;box-shadow:inset 0 0 0 1px #ffffff14}.hp-bar i{border-radius:inherit;background:linear-gradient(90deg,#37e36f,#a3ff69);height:100%;transition:width .28s;display:block;box-shadow:0 0 16px #4ade8094}.monster-arena{isolation:isolate;background-color:#0000;background-image:linear-gradient(#0208120f,#02081257 58%,#02060ec2),url(/game-assets/arena-bg.png);background-position:50%;background-repeat:repeat,repeat;background-size:cover;background-attachment:scroll,scroll;background-origin:padding-box,padding-box;background-clip:border-box,border-box;border:1px solid #b9d6f433;border-radius:30px;height:clamp(410px,58vw,620px);position:relative;overflow:hidden;box-shadow:0 28px 68px #0000006b,inset 0 1px #ffffff24}.monster-arena.player-hit{animation:.42s ease-out both arena-hit-shake}.monster-arena.player-hit:after{content:"";z-index:7;pointer-events:none;background:radial-gradient(circle at 18% 70%,#f8717157,#0000 34%);animation:.48s ease-out both arena-hit-flash;position:absolute;inset:0}.arena-bg{z-index:1;pointer-events:none;background:radial-gradient(circle at 76% 47%,#3b82f62e,#0000 26%),radial-gradient(circle at 18% 55%,#0003,#0000 24%),linear-gradient(90deg,#0108138f,#0000 35%,#0108136b);position:absolute;inset:0}.arena-bg:before,.arena-bg:after{content:"";position:absolute}.arena-bg:before{background:linear-gradient(#0000,#00000094);height:38%;bottom:0;left:0;right:0}.arena-bg:after{mix-blend-mode:multiply;background:radial-gradient(#0000 42%,#02060e94);inset:0}.archer-side{z-index:3;pointer-events:none;transform-origin:38% 88%;justify-items:center;gap:4px;width:min(34vw,268px);min-width:150px;display:grid;position:absolute;bottom:-8%;left:-2%}.archer-side span{display:none}.archer-asset{-webkit-user-select:none;user-select:none;filter:drop-shadow(0 28px 28px #0000009e);transform-origin:42% 82%;width:100%;animation:2.4s ease-in-out infinite archer-idle;display:block}.archer-side.hit .archer-asset,.archer-side.miss .archer-asset{animation:.48s cubic-bezier(.2,.8,.25,1) both archer-shoot}.archer-side.player-hit .archer-asset{animation:.7s cubic-bezier(.18,.88,.32,1.15) both archer-hurt}.monster-runner{--monster-progress:100;left:calc(12% + (var(--monster-progress) * 0.74%));z-index:4;pointer-events:none;transform-origin:50% 82%;width:min(34vw,286px);min-width:148px;transition:left .12s linear,opacity .28s,transform .28s;animation:.32s ease-out both monster-spawn,.58s ease-in-out .32s infinite monster-runner-bob;position:absolute;bottom:5%;transform:translate(-50%)}.monster-runner:before{content:"";filter:blur(5px);opacity:.78;background:radial-gradient(#00000094,#0000 68%);border-radius:50%;height:16%;position:absolute;bottom:8%;left:18%;right:14%}.monster-runner.hit{opacity:0;animation:.44s ease-out both monster-defeat;transform:translate(-50%)translateY(18px)scale(.72)rotate(8deg)}.monster-runner.player-hit{animation:.58s cubic-bezier(.12,.9,.28,1) both monster-lunge;transform:translate(-50%)scale(1.04)}.monster-asset{-webkit-user-select:none;user-select:none;filter:drop-shadow(0 28px 34px #000000b8);transform-origin:50% 82%;width:100%;animation:.52s ease-in-out infinite monster-walk;display:block}.monster-runner.hit .monster-asset{animation:.44s ease-out both monster-shatter}.monster-runner.player-hit .monster-asset{animation:.58s cubic-bezier(.12,.9,.28,1) both monster-bite}.monster-runner strong{color:#b9ecff;white-space:nowrap;word-break:keep-all;text-align:center;text-shadow:0 0 14px #38bdf8b3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#081226b8;border:1px solid #69d1ff6b;border-radius:999px;max-width:74%;padding:8px 16px;font-size:clamp(16px,3vw,28px);font-weight:900;position:absolute;top:48%;left:48%;transform:translate(-50%,-50%);box-shadow:0 0 26px #38bdf847,inset 0 1px #ffffff2e}.attack-arrow{z-index:5;opacity:0;transform-origin:0;background:linear-gradient(90deg,#0000,#9be7ff 24%,#f8fbff);border-radius:999px;width:110px;height:5px;position:absolute;bottom:45%;left:17%;box-shadow:0 0 18px #38bdf8db}.attack-arrow:after{content:"";border-top:8px solid #0000;border-bottom:8px solid #0000;border-left:17px solid #d9f8ff;position:absolute;top:-6px;right:-10px}.attack-arrow.hit{animation:.5s ease-out arrow-hit}.attack-arrow.miss{animation:.56s ease-out arrow-miss}.attack-arrow.player-hit{opacity:0}.arena-message{z-index:6;color:#d8e9fb;text-align:center;background:#050d188f;border-radius:999px;width:min(90%,560px);padding:9px 14px;font-size:14px;font-weight:900;position:absolute;bottom:12px;left:50%;transform:translate(-50%);box-shadow:inset 0 0 0 1px #ffffff1a}.monster-options{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.monster-options button{color:#172033;min-height:86px;font:inherit;text-align:left;background:linear-gradient(#fffffff0,#e5ebf3eb);border:1px solid #ffffff57;border-radius:22px;padding:18px 22px;font-size:clamp(17px,3vw,23px);font-weight:900;box-shadow:0 16px 32px #0003,inset 0 1px #ffffffd9}.monster-options button.correct{color:#fff;background:linear-gradient(#49d46f,#15803d);border-color:#4ade80d6;box-shadow:0 0 28px #4ade8057,inset 0 1px #ffffff57}.monster-options button.wrong{color:#fff;background:linear-gradient(#ef4444,#7f1d1d);border-color:#f87171b8}.monster-answer-tip{color:#fecaca;background:#7f1d1d7a;border-radius:18px;padding:11px 14px;font-weight:900}.monster-result{text-align:center;gap:16px;padding:22px;display:grid}.monster-result h2{font-size:26px}.monster-result-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.monster-result-actions{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.wordbook-card{width:100%;color:inherit;text-align:left;font:inherit;border:0}.wordbook-card.active{background:linear-gradient(#eff6ffeb,#ffffffd1);outline:2px solid #2f66ef6b}.wordbook-card em{color:#1d4ed8;background:#e8f0ff;border-radius:999px;width:fit-content;margin-top:2px;padding:7px 12px;font-style:normal;font-weight:900}@keyframes arrow-hit{0%{opacity:0;transform:translate(0)rotate(-4deg)}12%{opacity:1}to{opacity:1;transform:translate(min(58vw,560px))rotate(-2deg)}}@keyframes arrow-miss{0%{opacity:0;transform:translate(0)translateY(0)rotate(-4deg)}12%{opacity:1}to{opacity:0;transform:translate(min(48vw,420px))translateY(-72px)rotate(-18deg)}}@keyframes archer-idle{0%,to{transform:translateY(0)rotate(0)scale(1)}50%{transform:translateY(-3px)rotate(-.7deg)scale(1.012)}}@keyframes archer-shoot{0%{filter:drop-shadow(0 28px 28px #0000009e);transform:translate(0)rotate(0)scale(1)}22%{filter:drop-shadow(0 30px 30px #000000ad);transform:translate(-8px)rotate(-2deg)scale(1.015)}46%{transform:translate(7px)rotate(1.4deg)scale(1.02)}to{filter:drop-shadow(0 28px 28px #0000009e);transform:translate(0)rotate(0)scale(1)}}@keyframes archer-hurt{0%{filter:drop-shadow(0 28px 28px #0000009e);transform:translate(0)rotate(0)scale(1)}22%{filter:drop-shadow(0 20px 24px #000000b8)saturate(.8);transform:translate(-18px)rotate(-7deg)scale(.97)}48%{transform:translate(8px)rotate(3deg)scale(1.01)}to{filter:drop-shadow(0 28px 28px #0000009e);transform:translate(0)rotate(0)scale(1)}}@keyframes monster-spawn{0%{opacity:0;filter:blur(3px)}to{opacity:1;filter:blur()}}@keyframes monster-runner-bob{0%,to{transform:translate(-50%)translateY(0)rotate(0)}25%{transform:translate(-50%)translateY(-4px)rotate(-1.4deg)}50%{transform:translate(-50%)translateY(1px)rotate(.8deg)}75%{transform:translate(-50%)translateY(-3px)rotate(1.2deg)}}@keyframes monster-walk{0%,to{filter:drop-shadow(0 28px 34px #000000b8);transform:translateY(0)rotate(0)skew(0)scaleX(1)}25%{transform:translateY(-5px)rotate(-2deg)skew(-2.2deg)scaleX(.985)scaleY(1.025)}50%{transform:translateY(2px)rotate(1.2deg)skew(1.4deg)scaleX(1.018)scaleY(.99)}75%{transform:translateY(-4px)rotate(2deg)skew(2.1deg)scaleX(.99)scaleY(1.018)}}@keyframes monster-lunge{0%{opacity:1;transform:translate(-50%)translateY(0)scale(1)}35%{opacity:1;transform:translate(-58%)translateY(-10px)scale(1.08)rotate(-3deg)}to{opacity:0;transform:translate(-50%)translateY(8px)scale(.82)rotate(5deg)}}@keyframes monster-bite{0%{transform:translateY(0)rotate(0)scale(1)}40%{filter:drop-shadow(0 24px 38px #3b82f685);transform:translateY(-7px)rotate(-5deg)scale(1.08)}to{filter:drop-shadow(0 18px 22px #000000b8)saturate(.8);transform:translateY(14px)rotate(8deg)scale(.9)}}@keyframes monster-defeat{0%{opacity:1;filter:blur();transform:translate(-50%)translateY(0)scale(1)}45%{opacity:.78;filter:blur(.4px)brightness(1.25);transform:translate(-50%)translateY(-14px)scale(1.08)rotate(-4deg)}to{opacity:0;filter:blur(5px)brightness(1.35);transform:translate(-50%)translateY(22px)scale(.66)rotate(10deg)}}@keyframes monster-shatter{0%{opacity:1;transform:translateY(0)rotate(0)scale(1)}48%{opacity:.75;filter:drop-shadow(0 0 30px #38bdf89e);transform:translateY(-9px)rotate(-5deg)scale(1.08)}to{opacity:0;filter:blur(4px)saturate(.7);transform:translateY(20px)rotate(9deg)scale(.72)}}@keyframes arena-hit-shake{0%,to{transform:translate(0)}18%{transform:translate(-5px)}36%{transform:translate(4px)}54%{transform:translate(-3px)}72%{transform:translate(2px)}}@keyframes arena-hit-flash{0%{opacity:0}20%{opacity:1}to{opacity:0}}@media (width<=1100px){.app-shell{background:#dff5ff;display:block}.sidebar{z-index:20;height:auto;padding:8px max(10px, env(safe-area-inset-right)) max(8px, env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-left));border-top:1px solid #dfe6ef;border-right:0;position:fixed;inset:auto 0 0;box-shadow:0 -10px 30px #0f172a1f}.brand{display:none}.nav{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px}.nav-button{justify-content:center;min-height:48px;padding:10px 8px}.nav-button span,.side-progress,.nav-button:nth-child(n+5){display:none}.topbar,.focus-panel{flex-direction:column}.stats-row.compact{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;width:100%;display:grid}.stat{min-width:0;padding:9px}.main{padding-bottom:96px}.dashboard-grid,.mistake-list,.achievement-grid,.mission-grid,.urgent-grid,.quick-sentence-grid,.review-grid,.tool-layout,.admin-grid{grid-template-columns:1fr}.map-path,.toolkit-grid,.route-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=640px){.mobile-screen{max-width:none;margin:0;padding:28px 24px 110px}.study-screen{gap:18px;padding:26px 20px 128px}.reading-listen-screen{gap:14px;padding:24px 18px 128px}.reading-hero,.reading-player-card{border-radius:24px;padding:18px}.reading-player-head{flex-direction:column}.reading-player-head h2{font-size:22px}.reading-line{border-radius:18px;padding:15px}.reading-line p{font-size:23px}.reading-line span{font-size:15px}.reading-meta{flex-direction:column;padding:11px 14px}.reading-control-bar{border-radius:22px;grid-template-columns:minmax(0,1fr) 76px;padding:10px;bottom:92px}.reading-control-bar .primary-button,.reading-control-bar .secondary-button{border-radius:16px;min-height:50px;font-size:17px}.word-train-screen{grid-template-rows:40px 4px minmax(214px,1fr) auto auto;gap:10px;padding:22px 22px 118px}.word-train-top{grid-template-columns:36px minmax(0,1fr) 1px;gap:10px}.word-train-top button{width:36px;height:36px}.word-train-top svg{width:23px;height:23px}.word-train-top div{min-width:78px;padding-right:16px;font-size:12px}.word-train-prompt{gap:9px}.word-train-prompt>span{font-size:12px}.word-train-prompt h1{font-size:42px}.word-train-prompt.cn-mode h1{font-size:36px}.word-train-prompt p{max-width:300px;font-size:20px}.word-train-prompt button{width:36px;height:36px}.word-train-options{gap:9px}.word-train-option{border-radius:12px;min-height:58px;padding:11px 16px;font-size:18px}.word-train-feedback{padding:10px 14px;font-size:14px}.study-top-card{border-radius:26px;grid-template-columns:40px minmax(0,1fr) 40px;padding:18px}.study-top-card strong{font-size:16px}.study-back,.study-more{width:40px;height:40px}.study-image-card{border-width:6px;border-radius:26px;min-height:206px}.study-word-main h1{font-size:46px}.study-example,.review-hint{font-size:16px}.study-options{gap:12px}.study-option{border-radius:20px;min-height:108px;padding:14px;font-size:17px}.study-feedback,.study-complete-card div{grid-template-columns:1fr}.monster-screen{gap:10px;padding:16px 14px 132px}.monster-header{border-radius:22px;grid-template-columns:40px minmax(0,1fr) auto;gap:10px;padding:10px}.monster-header strong{font-size:17px}.monster-header span{font-size:12px}.monster-xp{padding:7px 9px}.monster-controls{border-radius:22px;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;padding:10px}.monster-controls button{min-width:31px;min-height:30px;font-size:12px}.monster-hud{grid-template-columns:auto minmax(0,1fr) auto;gap:8px;padding:8px 10px;font-size:12px;top:12px;left:12px;right:12px}.monster-hud span:last-child{grid-column:auto}.monster-arena{border-width:1px;border-radius:26px;height:340px}.archer-side{width:146px;min-width:0;bottom:-7%;left:-7%}.monster-runner{width:148px;min-width:0;bottom:6%}.monster-runner strong{max-width:92%;padding:7px 9px;font-size:14px;top:49%;transform:translate(-50%,-50%)}.attack-arrow{width:78px;bottom:46%;left:22%}.arena-message{padding:8px 10px;font-size:12px;bottom:10px}.monster-options{gap:10px}.monster-options button{border-radius:18px;min-height:78px;padding:12px;font-size:16px}.monster-result-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.monster-result-actions{grid-template-columns:1fr}.mobile-bottom-nav{width:calc(100% - 16px)}.main{padding:14px max(12px, env(safe-area-inset-right)) 98px max(12px, env(safe-area-inset-left))}.sidebar{padding:8px max(10px, env(safe-area-inset-right)) max(8px, env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-left))}.topbar{margin-bottom:14px}.topbar h1{font-size:24px}h1{font-size:28px}h2,.focus-panel h2{font-size:21px}.metric-grid,.lesson-actions,.practice-actions,.speak-actions,.result-actions,.mastery-overview{flex-direction:column}.stat,.metric{width:auto}.map-path,.quote-frame,.toolkit-grid,.route-grid,.option-grid{grid-template-columns:1fr}.term-card,.question-card,.focus-panel{padding:20px}.focus-panel{gap:14px}.track-progress-grid{grid-template-columns:1fr}.hero-cta{justify-content:center;width:100%}.compact-level{width:100%;min-width:0;padding:12px}.term-card h2{font-size:30px}.term-title-row,.direct-say-box,.review-row,.review-row.simple,.content-row{grid-template-columns:1fr}.term-title-row{display:grid}.favorite-button{width:100%}.speak-actions{align-items:stretch}.speak-actions .compact-button,.result-actions .compact-button{width:100%}.mission{grid-template-columns:42px 1fr}.mission .compact-button{grid-column:1/-1;width:100%}.achievement{grid-template-columns:1fr}.route-path:before{display:none}.map-node.current{box-shadow:0 0 0 3px color-mix(in srgb, var(--accent) 14%, transparent)}.lesson-action-bar{left:max(12px, env(safe-area-inset-left));right:max(12px, env(safe-area-inset-right));bottom:calc(76px + env(safe-area-inset-bottom));position:fixed}}@media (width<=420px){.nav{grid-template-columns:repeat(4,minmax(0,1fr))}.nav-button{min-height:46px;padding:9px 6px}.nav-button svg{width:19px;height:19px}.brand-mark{width:42px;height:42px}.stat,.metric,.section-block,.course-region,.term-card,.question-card,.tool-panel,.complete-card{padding:16px}.lesson-card,.urgent-card,.toolkit-card,.route-card,.quick-sentence,.map-node,.mission,.review-row,.content-row{padding:14px}}@media (hover:none){.lesson-card:hover,.map-node:not(:disabled):hover,.option:hover{box-shadow:none;transform:none}}