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small{letter-spacing:1.2px;margin-bottom:7px;font-size:9px;display:block}.level-tabs>button.active{background:var(--accent);color:#fff;border-color:var(--accent)}.lesson-grid{grid-template-columns:repeat(2,1fr);gap:20px;display:grid}.lesson-tile{text-align:left;flex-direction:column;padding:0;display:flex;overflow:hidden}.lesson-cover{color:#9b8cd4;background:linear-gradient(135deg,#e8e3ff,#f4edfa);justify-content:center;align-items:center;width:100%;height:170px;display:flex;position:relative}.lesson-cover>span{letter-spacing:3px;font-size:12px;position:absolute;bottom:15px;right:19px}.level-2{color:#7ea7a3;background:linear-gradient(135deg,#dfeff0,#eef7f3)}.level-3{color:#91a5c8;background:linear-gradient(135deg,#e0eafb,#edf2fa)}.level-4{color:#bca082;background:linear-gradient(135deg,#f4e6d6,#f8f2e9)}.level-5{color:#8b7cbb;background:linear-gradient(135deg,#e2def2,#eeeaf7)}.lesson-body{padding:23px}.lesson-body h2{margin-bottom:9px}.lesson-body>p{color:var(--muted);margin-bottom:17px;font-size:12px}.listening-note{margin-top:23px}.listening-note>p{color:var(--muted);margin-top:12px;font-size:12px}.level-result{border-top:1px solid var(--border);justify-content:space-between;padding-top:10px;display:flex}.level-result strong{color:var(--text);font-weight:500}.listening-layout{grid-template-columns:1.1fr 1fr;align-items:start;gap:25px;display:grid}.audio-panel{text-align:center}.audio-art{color:var(--accent);flex-direction:column;align-items:center;gap:12px;padding:25px 0 20px;display:flex}.sound-wave{align-items:center;gap:4px;height:64px;display:flex}.sound-wave i{background:#b7aee9;border-radius:4px;width:4px;display:block;transform:scaleY(.6)}.sound-wave.playing i{animation:.7s ease-in-out infinite alternate wave}@keyframes wave{to{transform:scaleY(1)}}.audio-controls{justify-content:center;align-items:center;gap:25px;margin:25px 0 15px;display:flex}.play-circle{background:var(--accent);color:#fff;border-radius:50%;place-items:center;width:65px;height:65px;display:grid}.audio-controls select{padding:7px;font-size:12px}.text-toggles{justify-content:center;gap:10px;margin-top:24px;display:flex}.text-toggles .secondary{font-size:11px}.transcript{text-align:left;background:var(--bg);border-radius:11px;margin-top:22px;padding:17px;font-size:13px;line-height:2}.vocabulary{text-align:left;border-top:1px solid var(--border);margin-top:25px;padding-top:20px}.vocabulary h3{margin-bottom:12px;font-size:13px}.vocabulary span{background:var(--bg);border-radius:6px;margin:4px 6px 4px 0;padding:5px 8px;font-size:11px;display:inline-block}.profile-tabs{background:var(--border);border-radius:12px;gap:7px;width:max-content;margin-bottom:24px;padding:5px;display:flex}.profile-tabs>button{color:var(--muted);background:0 0;border-radius:9px;align-items:center;gap:7px;padding:10px 20px;font-size:12px;display:flex}.profile-tabs>button.active{background:var(--surface);color:var(--accent);box-shadow:var(--shadow)}.filters{flex-wrap:wrap;gap:10px;margin-bottom:17px;display:flex}.filters select{flex:1;min-width:100px;font-size:11px}.search-box{border:1px solid var(--border);min-width:180px;color:var(--muted);border-radius:10px;flex:2;align-items:center;gap:5px;padding:0 10px;display:flex}.search-box input{outline-offset:-2px;background:0 0;border:0;width:100%;font-size:12px}.word-list details{border-bottom:1px solid var(--border)}.word-list summary{cursor:pointer;justify-content:space-between;align-items:center;gap:10px;padding:20px 0;list-style:none;display:flex}.word-list summary::-webkit-details-marker{display:none}.word-list summary>span:first-child{flex-direction:column;gap:6px;display:flex}.word-list summary>span:last-child{color:#c59d4b;align-items:center;gap:10px;display:flex}.word-list summary strong{font-size:17px;font-weight:600}.word-list summary small{color:var(--muted);font-size:11px}.word-expanded{padding:0 0 20px;font-size:13px}.word-expanded>p{margin:10px 0}.button-row{flex-wrap:wrap;gap:9px;margin-top:18px;display:flex}.heatmap{grid-template-rows:repeat(7,1fr);grid-auto-flow:column;gap:7px;margin:25px 0;display:grid}.heat-cell{background:var(--border);aspect-ratio:1;border-radius:5px;min-height:12px;max-height:40px}.heat-cell.selected{outline:2px solid var(--accent);outline-offset:2px}.intensity-1{background:#e0dafb}.intensity-2{background:#bbb0ef}.intensity-3{background:#9988e0}.intensity-4{background:var(--accent)}.day-detail{border-top:1px solid var(--border);margin-top:22px;padding-top:22px}.mini-stats{color:var(--muted);gap:25px;margin:15px 0;font-size:12px;display:flex}.mini-stats strong{color:var(--text);margin-left:7px}.settings-grid{grid-template-columns:1.1fr 1fr;align-items:start;gap:24px;display:grid}.settings-form>h2{margin-bottom:25px}.settings-form>label{justify-content:space-between;align-items:center;gap:15px;margin:17px 0;font-size:12px;display:flex}.settings-form>label>input:not([type=checkbox]),.settings-form>label>select{width:145px;font-size:12px}.settings-form>p{margin-top:-6px}.settings-form>.primary{width:100%;margin-top:25px}.data-manager>h2{margin-bottom:15px}.data-manager>p{color:var(--muted);margin-bottom:16px;font-size:12px}.data-manager .secondary{width:100%;margin:12px 0}.file-button{cursor:pointer;position:relative}.file-button input{opacity:0;cursor:pointer;width:100%;position:absolute;inset:0}.danger-button{color:#bf6565;background:#fbebeb;border-radius:9px;width:100%;padding:12px 16px;font-size:12px}.about{margin-top:20px}.about>p{margin-top:10px;margin-bottom:0}.settings-form .check-label{border-bottom:1px solid var(--border);padding:11px 0}:root[data-theme=dark] .lavender{background:#3b3358}:root[data-theme=dark] .mint{background:#283e36}:root[data-theme=dark] .peach{background:#44382f}:root[data-theme=dark] .sky{background:#2d3850}:root[data-theme=dark] .streak-pill{background:#3b332a;border-color:#534634}:root[data-theme=dark] .correct,:root[data-theme=dark] .option.right{color:#9dc7ae;background:#263e32}:root[data-theme=dark] .incorrect{color:#d7b58e;background:#45382b}:root[data-theme=dark] .rating.again{background:#422c30}:root[data-theme=dark] .rating.hard{background:#423b2c}:root[data-theme=dark] .rating.good{background:#2b3f34}:root[data-theme=dark] .danger-button{background:#422c30}:root[data-theme=dark] .task-step{color:#49475d}@media(min-width:1450px){.sidebar{width:245px;padding-left:30px;padding-right:30px}.workspace{margin-left:245px}.hero{min-height:300px}.hero-art{left:37%}.hero-art .card-a{left:110px}.hero-art .card-b{left:220px}.hero-content h2{font-size:36px}.main-content{padding-top:37px}.task{padding:27px}.task-detail{font-size:10px}}@media(max-width:1150px){.main-content{padding:27px 25px 0}.topbar{padding:0 25px}.sidebar{width:195px;padding-left:17px;padding-right:17px}.workspace{margin-left:195px}.brand{font-size:19px}.brand-mark{width:35px;height:35px}.hero-art{left:27%}.card-a{left:80px}.card-b{left:165px}.hero-progress{padding:0}.metric-row>div{gap:9px;padding:0 12px}.metric-icon{width:36px;height:36px}.metric-row p{font-size:9px}.task-grid{gap:12px}.task{padding:20px}.task-detail{font-size:9px}.learning-layout{grid-template-columns:minmax(0,1fr) 210px;gap:20px}.level-tabs>button{padding-left:11px}.panel{padding:21px}}@media(max-width:940px){.sidebar{width:170px;padding-left:14px;padding-right:14px}.workspace{margin-left:170px}.brand{gap:8px;font-size:17px}.brand small{font-size:8px}.hero-art{opacity:.5;left:20%}.hero-content{z-index:3}.hero-progress{margin-left:auto}.metric-row{grid-template-columns:repeat(2,1fr);row-gap:20px}.metric-row>div:nth-child(2){border:0}.metric-row>div{padding:0 20px}.task-grid{grid-template-columns:1fr}.task{grid-template-columns:1fr 1fr;column-gap:25px;display:grid}.task-top{grid-row:1/4;margin:0;display:none}.task h3{grid-column:1;align-self:end}.task>.muted{grid-column:1;margin-bottom:15px}.task-count{text-align:right;grid-area:1/2/3;align-self:center;margin:0}.task>.progress-track{grid-column:1/3}.task>.task-detail{grid-column:1;align-self:center;margin:12px 0 0;font-size:10px}.task>button{grid-area:4/2;margin-top:12px}.insight-grid,.learning-layout{grid-template-columns:1fr}.study-aside{display:none}.listening-layout,.settings-grid,.lesson-grid{grid-template-columns:1fr}.level-tabs>button{padding:12px 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p{font-size:9px}.hero-art{opacity:.4;left:20%;right:0;transform:scale(.8)}.hero-progress{z-index:4;align-self:center;margin-left:auto;margin-right:0}.ring{width:91px;height:91px;box-shadow:0 0 0 7px #ffffff0a}.ring>span{width:83px;height:83px;padding-top:20px;font-size:28px}.hero-progress>p{font-size:9px}.hero-button{gap:15px;padding:10px 14px;font-size:10px}.metric-row{gap:20px 0;margin:17px 0 27px;padding:18px 5px}.metric-row>div{padding:0 15px}.metric-row strong{font-size:23px}.metric-row p{font-size:10px}.metric-icon{width:38px;height:38px}.task-grid{gap:13px}.task{padding:21px}.task h3{font-size:17px}.task>.muted{font-size:10px}.task-detail{font-size:9px!important}.task>button{min-height:37px;padding:10px 12px;font-size:10px}.task-count strong{font-size:29px}.section-title h2{font-size:15px}.section-title>span{font-size:9px}.insight-grid{gap:16px;margin-top:24px}.panel{padding:22px}.bottom-nav{background:var(--surface);border-top:1px solid var(--border);z-index:30;padding:9px 8px max(9px,env(safe-area-inset-bottom));display:flex;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -5px 20px #302a5a04}.bottom-nav button{color:var(--muted);background:0 0;flex-direction:column;flex:1;align-items:center;gap:4px;padding:3px 0;font-size:10px;display:flex}.bottom-nav button.active{color:var(--accent);font-weight:650}.bottom-nav button.active>svg{background:var(--accent-soft);box-sizing:content-box;border-radius:6px;margin:-3px;padding:3px}.toast{font-size:12px;bottom:90px}.top-actions .text-button,.tag{font-size:10px}.word-toolbar{padding:15px}.word-face{min-height:375px;padding:24px 20px}.spelling{font-size:38px}.flip-stage{min-height:375px}.back .meaning{font-size:20px}.learning-layout{margin-top:20px}.history small{width:100%;margin-left:0}.history>div{gap:8px 16px}.level-tabs{gap:7px;padding:2px 1px 5px;overflow:auto}.level-tabs>button{white-space:nowrap;min-width:86px;font-size:11px}.level-tabs small{font-size:8px}.lesson-cover{height:155px}.audio-controls{gap:25px}.question-card h2{font-size:17px}.question-card{padding:22px}.question-card .option{font-size:12px}.text-toggles{gap:8px}.text-toggles .secondary{padding:10px}.profile-tabs{width:100%;display:flex}.profile-tabs button{flex:1;justify-content:center;gap:5px;padding:10px 7px;font-size:11px}.profile-tabs svg{width:16px}.heatmap{gap:5px}.heat-cell{border-radius:3px}.mini-stats{flex-wrap:wrap;gap:15px}.settings-form>label{font-size:11px}.filters{gap:9px}.search-box{flex-basis:100%;width:100%}.filters select{min-width:82px;padding:10px 8px;font-size:10px}.empty{padding:37px 22px}.empty h1{font-size:21px}.inline-notice{flex-wrap:wrap;font-size:11px}.rating-row{gap:8px}.rating small{font-size:9px}.loading,.fatal{margin:12vh 18px}.word-expanded .notice{overflow-wrap:anywhere}footer{padding:27px 0 0;font-size:8px}}@media(max-width:370px){.main-content{padding-left:13px;padding-right:13px}.hero{padding:23px 20px}.hero-art{display:none}.hero h2{font-size:27px}.hero-progress{transform-origin:100%;transform:scale(.85)}.hero-label{letter-spacing:0}.metric-row>div{gap:8px;padding:0 10px}.metric-row p{font-size:9px}.task-detail{font-size:8px!important}.rating small{font-size:8px}.profile-tabs>button{font-size:10px}}@media(prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.flip-inner{position:relative}.word-face{-webkit-backface-visibility:hidden}.flip-stage:not(.flipped) .back,.flip-stage.flipped .front{width:100%;position:absolute;inset:0;overflow:hidden}.word-details{text-align:left;width:100%}.detail-section{margin:18px 0 24px}.detail-section>h3{color:var(--text);margin-bottom:10px;font-size:14px}.detail-hint,.detail-empty{color:var(--muted);margin-bottom:8px;font-size:11px}.bilingual-list{gap:0;margin:0;display:grid}.bilingual-list>div{border-bottom:1px solid var(--border);grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:8px 16px;padding:11px 0;display:grid}.bilingual-list dt{overflow-wrap:anywhere;font-size:14px;font-weight:550;line-height:1.7}.bilingual-list dt small{color:var(--muted);font-size:11px;font-weight:400;display:inline}.bilingual-list dd{color:var(--text);margin:0;font-size:13px;line-height:1.8}.example-label{color:var(--accent);letter-spacing:1px;margin-top:4px;font-size:10px;display:block}blockquote .english-example{color:var(--text);margin:6px 0 14px;font-size:14px;line-height:1.9}blockquote .chinese-translation{color:var(--text);margin:6px 0 2px;font-size:14px;line-height:1.9}@media(max-width:700px){.bilingual-list>div{grid-template-columns:1fr;gap:3px;padding:10px 0}.bilingual-list dt{font-size:15px}.bilingual-list dd{font-size:14px}.detail-section>h3{font-size:15px}.detail-section{margin:16px 0 22px}}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}