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.map-goal{border-color:var(--signal);color:var(--signal);font-size:26px}.adventure-brief{flex-direction:column;justify-content:center;padding:clamp(34px,5vw,70px);display:flex}.adventure-brief h2{font:500 clamp(42px, 5vw, 68px) / .95 var(--serif);letter-spacing:-.045em;margin:18px 0 26px}.adventure-brief select,.autoplay-toolbar select{border:1px solid var(--line-strong);background:var(--ink-soft);border-radius:0;outline:0;width:100%;min-height:52px;padding:0 14px}.adventure-rules{border-top:1px solid var(--line);border-left:1px solid var(--line);grid-template-columns:repeat(3,1fr);margin:22px 0;display:grid}.adventure-rules span{border-right:1px solid var(--line);border-bottom:1px solid var(--line);color:var(--paper-faint);font:700 8px/1.4 var(--mono);text-align:center;padding:14px 10px}.adventure-rules b{color:var(--acid);margin-bottom:5px;font-size:14px;display:block}.adventure-game{max-width:920px;min-height:680px;margin:0 auto;padding:48px 0 80px}.adventure-hud{border-top:1px solid var(--line);border-left:1px solid var(--line);grid-template-columns:repeat(3,1fr);display:grid}.adventure-hud>div{border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 20px}.adventure-hud span{color:var(--paper-faint);font:700 8px/1 var(--mono);letter-spacing:.1em;margin-bottom:5px;display:block}.adventure-hud strong{font:500 24px/1 var(--serif)}.adventure-path{grid-template-columns:repeat(10,1fr);gap:6px;margin:20px 0 36px;display:grid}.adventure-path span{background:#ece8dc1f;height:5px}.adventure-path span.is-done{background:var(--acid-dark)}.adventure-path span.is-current{background:var(--acid)}.adventure-question{border:1px solid var(--line);background:var(--ink-soft);padding:clamp(28px,5vw,58px)}.adventure-question>p:not(.eyebrow){color:var(--paper-faint);font:700 10px/1 var(--mono);margin:26px 0 13px}.adventure-word{text-align:left;background:0 0;justify-content:space-between;align-items:flex-end;gap:20px;width:100%;margin-top:20px;display:flex}.adventure-word strong{font:500 clamp(48px, 7vw, 84px) / .95 var(--serif);letter-spacing:-.055em}.adventure-word span{color:var(--acid);font:700 9px/1 var(--mono)}.adventure-options{grid-template-columns:1fr 1fr;gap:9px;display:grid}.adventure-options button{border:1px solid var(--line);background:var(--ink);text-align:left;align-items:center;gap:12px;min-height:72px;padding:14px;display:flex}.adventure-options button:not(:disabled):hover{border-color:var(--acid)}.adventure-options button>span{border:1px solid var(--line-strong);width:27px;height:27px;font:700 9px/1 var(--mono);flex:none;place-items:center;display:grid}.adventure-options button.is-correct{border-color:var(--acid);opacity:1;background:#d7ff3f14}.adventure-options button.is-wrong{border-color:var(--signal);opacity:1;background:#ff5b4514}.adventure-options button.is-muted{opacity:.34}.adventure-feedback{border-left:3px solid var(--acid);background:#d7ff3f0e;grid-template-columns:1fr auto;gap:24px;margin-top:16px;padding:18px;display:grid}.adventure-feedback.is-wrong{border-color:var(--signal);background:#ff5b450e}.adventure-feedback strong{color:var(--acid)}.adventure-feedback.is-wrong strong{color:var(--signal)}.adventure-feedback p,.adventure-feedback span{margin:6px 0 0;font-size:12px;line-height:1.6}.adventure-feedback span{color:var(--paper-faint);display:block}.adventure-feedback button{background:var(--acid);min-width:110px;color:var(--ink);font:800 10px/1 var(--mono)}.adventure-result{border-bottom:1px solid var(--line);text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:640px;display:flex}.adventure-result>span{color:var(--signal);margin-bottom:26px;font-size:84px}.adventure-result h2{font:500 clamp(54px, 8vw, 96px) / .92 var(--serif);letter-spacing:-.055em;margin:22px 0 12px}.adventure-result>p:not(.eyebrow){color:var(--paper-dim)}.adventure-result>div{gap:10px;margin-top:28px;display:flex}.review-empty{min-height:520px}.review-empty .primary-button{margin-top:28px}.review-session{max-width:780px;min-height:600px;margin:0 auto;padding:54px 0 80px}.review-session-head{color:var(--paper-faint);font:700 9px/1 var(--mono);justify-content:space-between;margin-bottom:12px;display:flex}.review-card{border:1px solid var(--line);background:var(--ink-soft);text-align:center;min-height:450px;padding:clamp(34px,7vw,78px);position:relative}.review-card h2{font:500 clamp(52px, 8vw, 90px) / .9 var(--serif);letter-spacing:-.06em;margin:80px 0 12px}.review-card>p{color:var(--paper-faint);font:500 12px/1 var(--mono)}.review-listen{border:1px solid var(--line);width:44px;height:44px;color:var(--acid);background:0 0;place-items:center;display:grid;position:absolute;top:24px;right:24px}.reveal-button{border:1px solid var(--line-strong);font:750 10px/1 var(--mono);background:0 0;margin-top:70px;padding:13px 18px}.reveal-button:hover{border-color:var(--acid);color:var(--acid)}.review-answer{border-top:1px solid var(--line);margin-top:56px;padding-top:26px}.review-answer>strong{color:var(--acid);font-size:20px}.review-answer p{margin:22px 0 7px;font-size:15px;line-height:1.6}.review-answer>span{color:var(--paper-faint);font-size:12px}.review-answer .mastery-buttons{justify-content:center}.autoplay-overlay{z-index:500;background:radial-gradient(circle at 50% 35%, #d7ff3f14, transparent 35%), var(--ink);position:fixed;inset:0;overflow-y:auto}.autoplay-header{z-index:2;border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#12140fe6;justify-content:space-between;align-items:center;min-height:68px;padding:0 24px;display:flex;position:sticky;top:0}.autoplay-header>div{grid-template-columns:auto auto;column-gap:13px;display:grid}.autoplay-header .brand-diamond{grid-row:span 2;align-self:center}.autoplay-header button{border:1px solid var(--line);font:700 10px/1 var(--mono);background:0 0;padding:10px 12px}.autoplay-toolbar{justify-content:space-between;align-items:flex-end;gap:20px;width:min(980px,100% - 32px);margin:24px auto 0;display:flex}.autoplay-toolbar label{flex-direction:column;gap:7px;min-width:min(430px,60vw);display:flex}.autoplay-toolbar label>span{color:var(--paper-faint);font:700 8px/1 var(--mono);letter-spacing:.1em}.autoplay-rate{gap:6px;display:flex}.autoplay-stage{width:min(980px,100% - 32px);margin:24px auto 80px}.autoplay-progress-copy{color:var(--paper-faint);font:700 9px/1 var(--mono);justify-content:space-between;margin-bottom:10px;display:flex}.autoplay-progress{background:#ece8dc1a;height:5px}.autoplay-progress span{background:var(--acid);height:100%;transition:width .24s;display:block}.autoplay-card{border:1px solid var(--line);text-align:center;background:#191c16e0;min-height:530px;margin-top:20px;padding:clamp(38px,7vw,86px)}.autoplay-card h2{font:500 clamp(58px, 10vw, 122px) / .88 var(--serif);letter-spacing:-.07em;margin:34px 0 10px}.autoplay-ipa{color:var(--paper-faint);font:500 12px/1 var(--mono)}.autoplay-meaning{color:var(--acid);margin:30px 0;font-size:clamp(18px,2vw,26px)}.autoplay-example{border-top:1px solid var(--line);max-width:700px;margin:0 auto;padding-top:24px}.autoplay-example p{font:500 clamp(18px, 2.4vw, 28px) / 1.5 var(--serif);margin:0}.autoplay-example span,.autoplay-note{color:var(--paper-faint);margin-top:11px;font-size:12px;line-height:1.6;display:block}.autoplay-note{max-width:680px;margin:20px auto 0}.autoplay-card-actions{justify-content:center;align-items:flex-end;gap:12px;margin-top:30px;display:flex}.autoplay-favorite{border:1px solid var(--line);min-height:36px;color:var(--paper-faint);font:700 9px/1 var(--mono);background:0 0;padding:8px 12px}.autoplay-favorite.is-active{border-color:var(--acid);color:var(--acid)}.autoplay-controls{justify-content:center;align-items:center;gap:15px;margin-top:26px;display:flex}.autoplay-controls button{border:1px solid var(--line-strong);width:56px;height:56px;font:700 18px/1 var(--mono);background:0 0;border-radius:50%;place-items:center;display:grid}.autoplay-controls .play-toggle{border-color:var(--acid);background:var(--acid);width:72px;height:72px;color:var(--ink)}.repeat-control{width:max-content;color:var(--paper-faint);font:700 9px/1 var(--mono);align-items:center;gap:8px;margin:18px auto 0;display:flex}.site-footer{width:min(1380px,100% - 40px);min-height:120px;color:var(--paper-faint);font:700 9px/1.6 var(--mono);grid-template-columns:1fr auto auto;align-items:center;gap:36px;margin:0 auto;display:grid}.site-footer>div{color:var(--paper);flex-direction:row;align-items:center;gap:11px}.site-footer p{max-width:380px;margin:0}.mobile-nav{display:none}@media (max-width:980px){.site-header{grid-template-columns:1fr auto}.primary-nav{display:none}.home-hero{grid-template-columns:1fr;min-height:470px}.hero-counter{display:none}.lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.scan-workbench,.adventure-start{grid-template-columns:1fr}.scan-dropzone,.adventure-map{border-right:0;border-bottom:1px solid var(--line)}.site-footer{grid-template-columns:1fr 1fr;padding:28px 0}.site-footer p:last-child{grid-column:span 2}}@media (max-width:720px){body{background-size:34px 34px;padding-bottom:66px}.view-shell,.site-footer{width:min(100% - 24px,1380px)}.site-header{min-height:60px}.site-brand{padding:0 13px}.site-brand strong{font-size:11px}.site-brand small{font-size:7px}.header-autoplay{min-width:0;padding:0 15px;font-size:10px}.header-language{min-width:58px;padding:0 10px}.header-language span{font-size:10px}.header-language small{font-size:7px}.home-hero{min-height:460px}.home-hero-copy{padding:65px 0 54px}.home-hero h1{font-size:clamp(58px,20vw,90px)}.hero-intro{margin-top:28px;font-size:14px}.home-search{padding:22px 0 26px}.search-control{grid-template-columns:auto minmax(0,1fr)}.search-control>span,.dictionary-search>span{padding:0 12px}.search-control input,.dictionary-search input{min-height:56px;font-size:14px}.search-control>button{border-top:1px solid var(--line);border-left:0;grid-column:span 2;min-height:46px}.search-preview-row{grid-template-columns:1fr auto;gap:7px 12px}.search-preview-row>span:nth-child(3){grid-column:1}.search-play{grid-area:1/2/span 3}.action-grid,.lesson-grid{grid-template-columns:1fr}.action-card{min-height:320px;padding:28px 22px}.action-symbol{font-size:58px}.action-card strong{font-size:48px}.progress-strip{grid-template-columns:repeat(3,1fr)}.progress-strip>button{text-align:center;min-height:90px;padding:15px 10px}.progress-strip strong{font-size:26px}.progress-meter{grid-column:span 3;min-height:85px}.review-link{grid-template-columns:1fr auto;gap:8px}.review-link>span:first-child,.review-link strong{grid-column:1}.review-link>span:last-child{grid-area:1/2/span 2}.section-heading{grid-template-columns:1fr;align-content:end;gap:18px;min-height:280px;padding:48px 0 32px}.section-heading h1{font-size:clamp(54px,18vw,82px)}.section-heading div>p{font-size:13px}.filter-row .favorite-filter{margin-left:0}.bank-tabs{grid-template-columns:repeat(2,minmax(0,1fr))}.dictionary-results-head{flex-direction:column;align-items:stretch}.dictionary-results-head button{min-height:44px}.lesson-card{min-height:330px}.scan-dropzone{min-height:370px}.scan-control-panel{padding:28px 0}.subsection-heading{flex-direction:column;align-items:flex-start}.adventure-map{gap:22px 10px;min-height:330px;padding:50px 12px}.adventure-map span:nth-child(odd){transform:translateY(-24px)}.adventure-map span:nth-child(2n){transform:translateY(24px)}.adventure-brief{padding:40px 0 50px}.adventure-game{padding-top:28px}.adventure-question{padding:26px 16px}.adventure-word{flex-direction:column;align-items:flex-start}.adventure-word strong{font-size:clamp(44px,14vw,68px)}.adventure-options,.adventure-feedback{grid-template-columns:1fr}.adventure-feedback button{min-height:46px}.review-session{padding-top:28px}.review-card{min-height:440px;padding:32px 16px}.autoplay-toolbar{flex-direction:column;align-items:stretch}.autoplay-toolbar label{min-width:0}.autoplay-rate button{flex:1}.autoplay-card{min-height:500px;padding:40px 18px}.autoplay-card h2{font-size:clamp(52px,16vw,84px)}.autoplay-card-actions{flex-direction:column;align-items:center}.site-footer{flex-direction:column;align-items:flex-start;gap:12px;display:flex}.mobile-nav{z-index:200;border-top:1px solid var(--line-strong);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#12140ff5;grid-template-columns:repeat(4,1fr);height:66px;display:grid;position:fixed;inset:auto 0 0}.mobile-nav button{color:var(--paper-faint);font:700 9px/1 var(--mono);background:0 0;flex-direction:column;justify-content:center;align-items:center;gap:4px;display:flex}.mobile-nav button span{font-size:19px}.mobile-nav button.is-active{color:var(--acid)}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}
:root[data-theme=light]{--ink:#f5f5f7;--ink-soft:#ffffffc7;--ink-raised:#fff;--paper:#1d1d1f;--paper-dim:#515154;--paper-faint:#747477;--acid:#0071e3;--acid-dark:#0057b8;--signal:#ff3b30;--sky:#32ade6;--line:#1d1d1f1c;--line-strong:#1d1d1f33;--serif:-apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}body,.site-header,.mobile-nav,.search-control,.dictionary-search,.lesson-card,.adventure-question,.review-card,.autoplay-card,.autoplay-overlay{transition:background-color .36s cubic-bezier(.22,1,.36,1),color .28s,border-color .28s,box-shadow .36s cubic-bezier(.22,1,.36,1)}button:active,.header-language:active{transition:transform .1s ease-out;transform:scale(.97)}.header-actions{justify-self:end;align-items:stretch;display:flex}.theme-toggle{border-left:1px solid var(--line);width:54px;min-width:54px;color:var(--paper-faint);background:0 0;place-items:center;display:grid}.theme-toggle:hover{color:var(--paper);background:#d7ff3f12}.theme-toggle-symbol{border:1px solid var(--line-strong);border-radius:50%;place-items:center;width:30px;height:30px;font-size:16px;line-height:1;display:grid}[data-theme=light] body{background-color:#f5f5f7;background-image:radial-gradient(circle at 12% -8%,#0071e324,#0000 30%),radial-gradient(circle at 92% 18%,#32ade61c,#0000 27%),none;background-position:0 0,0 0,0 0;background-repeat:repeat,repeat,repeat;background-size:auto,auto,auto;background-attachment:fixed;background-origin:padding-box,padding-box,padding-box;background-clip:border-box,border-box,border-box}[data-theme=light] .site-header,[data-theme=light] .autoplay-header{-webkit-backdrop-filter:blur(28px)saturate(180%);backdrop-filter:blur(28px)saturate(180%);background:#ffffffbd;border-color:#1d1d1f14;box-shadow:inset 0 1px #fffc,0 10px 32px #0f172a0f}[data-theme=light] .primary-nav button:hover,[data-theme=light] .primary-nav button.is-active,[data-theme=light] .header-language:hover,[data-theme=light] .theme-toggle:hover{background:#0071e312}[data-theme=light] .theme-toggle-symbol{color:var(--acid);background:#0071e314;border-color:#0071e33d}[data-theme=light] .home-hero h1,[data-theme=light] .section-heading h1,[data-theme=light] .action-card strong,[data-theme=light] .adventure-brief h2,[data-theme=light] .adventure-word strong,[data-theme=light] .adventure-result h2,[data-theme=light] .review-card h2,[data-theme=light] .autoplay-card h2{letter-spacing:-.055em;font-weight:720}[data-theme=light] .hero-counter{color:#0071e313}[data-theme=light] .search-control,[data-theme=light] .dictionary-search{-webkit-backdrop-filter:blur(22px)saturate(170%);backdrop-filter:blur(22px)saturate(170%);background:#ffffffd1;border-color:#1d1d1f17;border-radius:18px;overflow:hidden;box-shadow:inset 0 1px #ffffffe6,0 12px 36px #0f172a12}[data-theme=light] .search-control input::placeholder,[data-theme=light] .dictionary-search input::placeholder,[data-theme=light] .recognized-copy textarea::placeholder{color:#8e8e93}[data-theme=light] .search-preview{-webkit-backdrop-filter:blur(24px)saturate(180%);backdrop-filter:blur(24px)saturate(180%);background:#ffffffe6;border:1px solid #1d1d1f14;border-radius:18px;margin-top:8px;overflow:hidden;box-shadow:0 16px 44px #0f172a14}[data-theme=light] .search-preview-row:hover,[data-theme=light] .bank-tabs button:hover,[data-theme=light] .bank-tabs button.is-active,[data-theme=light] .progress-strip>button:hover,[data-theme=light] .review-link:hover{background:#0071e30f}[data-theme=light] .action-grid,[data-theme=light] .lesson-grid{border:0;gap:16px;padding:20px 0}[data-theme=light] .action-card,[data-theme=light] .lesson-card{-webkit-backdrop-filter:blur(22px)saturate(160%);backdrop-filter:blur(22px)saturate(160%);background:#ffffffc2;border:1px solid #1d1d1f14;border-radius:28px;box-shadow:inset 0 1px #ffffffe6,0 14px 40px #0f172a0f}[data-theme=light] .action-card{transition:transform .32s cubic-bezier(.22,1,.36,1),box-shadow .32s cubic-bezier(.22,1,.36,1),background-color .24s}[data-theme=light] .action-card:hover,[data-theme=light] .action-card-acid:hover,[data-theme=light] .action-card-signal:hover,[data-theme=light] .action-card-scan:hover,[data-theme=light] .lesson-card:hover{background:#fffffff0;transform:translateY(-3px);box-shadow:inset 0 1px #fffffff2,0 22px 56px #0f172a1a}[data-theme=light] .action-card:active,[data-theme=light] .lesson-card:active{transform:scale(.985)}[data-theme=light] .progress-strip,[data-theme=light] .review-link,[data-theme=light] .scan-workbench,[data-theme=light] .adventure-question,[data-theme=light] .review-card,[data-theme=light] .autoplay-card{-webkit-backdrop-filter:blur(24px)saturate(165%);backdrop-filter:blur(24px)saturate(165%);background:#ffffffc7;border:1px solid #1d1d1f14;border-radius:24px;overflow:hidden;box-shadow:0 14px 42px #0f172a11}[data-theme=light] 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