@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+HK:wght@400;500;700;900&display=swap";.app-container{background-color:var(--bg-color);flex-direction:column;min-height:100vh;display:flex;overflow:hidden}.loading-screen{height:100vh;color:var(--text-color);justify-content:center;align-items:center;font-size:1.1rem;display:flex}.auth-page{background:var(--bg-color);flex-direction:column;justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.top-navbar{z-index:1000;background:var(--card-bg);border-bottom:1px solid var(--border-color);box-sizing:border-box;justify-content:space-between;align-items:center;width:100%;height:64px;padding:0 20px;display:flex;position:fixed;top:0;left:0}.nav-logo{color:var(--text-color);align-items:center;gap:8px;font-size:1.25rem;font-weight:700;display:flex}.navbar-right{align-items:center;gap:12px;display:flex}.theme-btn{color:var(--text-color);cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;padding:8px;display:flex}.theme-btn:hover{background:var(--bg-color)}.volume-control-container{position:relative}.volume-overlay{z-index:1000;background:0 0;width:100vw;height:100vh;position:fixed;top:0;left:0}.volume-panel{background:var(--card-bg);border:1px solid var(--border-color);z-index:1001;border-radius:16px;flex-direction:column;align-items:center;gap:8px;min-width:140px;padding:16px 12px;display:flex;position:absolute;top:55px;right:0;box-shadow:0 10px 30px #00000026}.account-dropdown-container{position:relative}.account-btn{border:1px solid var(--border-color);cursor:pointer;color:var(--text-color);background:0 0;border-radius:30px;align-items:center;gap:8px;padding:5px 12px 5px 6px;display:flex}.avatar-circle{background:var(--primary-color);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:32px;height:32px;display:flex}.dropdown-menu{background:var(--card-bg);border:1px solid var(--border-color);z-index:1001;border-radius:12px;width:220px;position:absolute;top:110%;right:0;overflow:hidden;box-shadow:0 8px 25px #00000026}.dropdown-header{border-bottom:1px solid var(--border-color);padding:12px 16px}.role-text,.email-text{margin:4px 0;font-size:.85rem}.dropdown-item{text-align:left;width:100%;color:var(--text-color);cursor:pointer;background:0 0;border:none;align-items:center;gap:10px;padding:12px 16px;display:flex}.dropdown-item:hover{background:var(--bg-color)}.logout-item{color:#e74c3c;border-top:1px solid var(--border-color)}.side-nav{background:var(--card-bg);border-right:1px solid var(--border-color);z-index:900;flex-direction:column;width:220px;height:calc(100vh - 64px);padding:20px 0;transition:transform .3s;display:flex;position:fixed;top:64px;left:0}.nav-btn{color:var(--nav-text);cursor:pointer;background:0 0;border:none;align-items:center;gap:14px;padding:14px 24px;font-weight:500;transition:all .2s;display:flex}.nav-btn:hover{background:var(--bg-color);color:var(--text-color)}.nav-btn.active{background:var(--primary-color);color:#fff}.main-layout-content{flex-direction:column;flex:1;margin-left:220px;padding:84px 40px 40px;transition:margin-left .3s;display:flex}.content-wrapper{flex-direction:column;flex-grow:1;width:100%;max-width:1200px;margin:0 auto;display:flex}.bottom-nav-reveal,.bottom-nav-collapse{display:none}.main-layout-content--practice,.main-layout-content--training{box-sizing:border-box;height:100dvh;padding-top:64px;padding-bottom:0;overflow:hidden}.main-layout-content--practice .content-wrapper,.main-layout-content--training .content-wrapper{max-width:none;height:100%;min-height:0}@media (width<=1024px){.side-nav{width:100vw!important;height:calc(70px + env(safe-area-inset-bottom))!important;padding:0 0 env(safe-area-inset-bottom)!important;background-color:var(--card-bg,#fff)!important;border-top:1px solid var(--border-color,#e0e0e0)!important;z-index:9999!important;border-right:none!important;flex-direction:row!important;justify-content:space-around!important;align-items:center!important;transition:transform .3s cubic-bezier(.4,0,.2,1)!important;display:flex!important;position:fixed!important;top:auto!important;bottom:0!important;left:0!important;transform:translateY(0)!important}.side-nav.hidden{transform:translateY(calc(100% + env(safe-area-inset-bottom)))!important}.side-nav .nav-btn{border-radius:8px!important;flex-direction:column!important;flex:1!important;justify-content:center!important;gap:4px!important;min-width:0!important;margin:0 4px!important;padding:8px 0!important;font-size:11px!important;display:flex!important}.bottom-nav-reveal{z-index:10000;border:1px solid var(--border-color);background:var(--card-bg);width:58px;height:28px;color:var(--text-color);cursor:pointer;touch-action:pan-y;left:50%;bottom:max(6px, env(safe-area-inset-bottom));border-radius:14px 14px 6px 6px;justify-content:center;align-items:center;display:flex;position:fixed;transform:translate(-50%);box-shadow:0 4px 14px #0000002e}.bottom-nav-collapse{z-index:2;border:1px solid var(--border-color);background:var(--card-bg);width:36px;height:20px;color:var(--text-color);cursor:pointer;touch-action:manipulation;border-radius:0 0 12px 12px;justify-content:center;align-items:center;display:flex;position:absolute;top:3px;left:50%;transform:translate(-50%);box-shadow:0 3px 10px #00000024}.side-nav.collapsible .nav-btn{padding-top:20px!important;padding-bottom:4px!important}.main-layout-content{padding:84px 20px calc(80px + env(safe-area-inset-bottom));margin-left:0}.main-layout-content.nav-hidden{padding-bottom:38px}.main-layout-content--practice,.main-layout-content--training{padding:64px 12px 0!important}}@media (width<=767px){.top-navbar{padding:0 12px}.main-layout-content{margin-left:0;padding:74px 12px 70px!important}.main-layout-content--practice,.main-layout-content--training{padding:64px 8px 0!important}.side-nav{background-color:var(--card-bg,#fff)!important;border-top:1px solid var(--border-color,#e0e0e0)!important;z-index:9999!important;border-right:none!important;flex-direction:row!important;justify-content:space-around!important;align-items:center!important;width:100vw!important;height:70px!important;transition:transform .3s cubic-bezier(.4,0,.2,1)!important;display:flex!important;position:fixed!important;top:auto!important;bottom:0!important;left:0!important;transform:translateY(0)!important}.side-nav.hidden{transform:translateY(100%)!important}.side-nav .nav-btn{border-radius:8px!important;flex-direction:column!important;flex:1!important;justify-content:center!important;gap:4px!important;margin:0 4px!important;padding:8px 0!important;font-size:11px!important;display:flex!important}}.modal-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:12000;background:#000000b3;justify-content:center;align-items:center;width:100vw;height:100vh;display:flex;position:fixed;top:0;left:0}.modal-content{background:var(--card-bg);color:var(--text-color);border:1px solid var(--border-color);border-radius:20px;width:90%;max-width:420px;max-height:85vh;padding:32px 28px;position:relative;overflow-y:auto;box-shadow:0 20px 50px #0000004d}.modal-close-btn{color:var(--nav-text);cursor:pointer;background:0 0;border:none;border-radius:50%;padding:6px;position:absolute;top:16px;right:16px}.modal-close-btn:hover{background:var(--bg-color);color:var(--text-color)}.input-group{align-items:center;display:flex;position:relative}.input-group input{border:1px solid var(--border-color);background:var(--bg-color);width:100%;color:var(--text-color);border-radius:12px;padding:14px 16px 14px 48px;font-size:16px}.submit-btn{background:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:12px;margin-top:10px;padding:14px;font-size:16px;font-weight:700}.message{text-align:center;border-radius:10px;padding:12px;font-size:14px}.message.success{color:#2ecc71;background:#2ecc7126}.message.error{color:#e74c3c;background:#e74c3c26}.eye-btn{color:var(--nav-text);cursor:pointer;background:0 0;border:none;position:absolute;top:50%;right:12px;transform:translateY(-50%)}.character-breakdown{flex-direction:column;align-items:center;width:100%;display:flex}.character-breakdown__title{text-align:center;color:var(--nav-text);justify-content:center;align-items:center;gap:6px;margin-bottom:8px;font-size:14px;font-weight:700;display:flex}.character-breakdown__box{aspect-ratio:1;background:var(--card-bg);border:2px solid var(--border-color);box-sizing:border-box;border-radius:12px;justify-content:center;align-items:center;width:100%;max-width:280px;height:auto;margin:0 auto;display:flex;overflow:hidden;box-shadow:inset 0 2px 8px #00000005}.character-breakdown--sm .character-breakdown__box{border-width:1px;border-radius:10px;max-width:150px}.character-breakdown--sm .character-breakdown__title{margin-bottom:6px;font-size:12px}.character-breakdown__stroke{transition:fill .3s}.character-breakdown__shared-stroke-hint{fill:none;stroke-width:30px;stroke-linecap:round;stroke-linejoin:round;opacity:.9;pointer-events:none;transition:stroke .3s}.character-breakdown__empty{color:var(--nav-text);text-align:center;padding:12px;font-size:13px;font-weight:600}.practice-wrapper{--f1-bg:#ffebee;--f1-bd:#ef9a9a;--f2-bg:#fff3e0;--f2-bd:#ffcc80;--f3-bg:#fffde7;--f3-bd:#fff59d;--f4-bg:#e8f5e9;--f4-bd:#a5d6a7;--f5-bg:#e0f7fa;--f5-bd:#80deea;--f6-bg:#e3f2fd;--f6-bd:#90caf9;--f7-bg:#f3e5f5;--f7-bd:#ce93d8;--f8-bg:#fce4ec;--f8-bd:#f48fb1;--f9-bg:#f5f5f5;--f9-bd:#eee;--hint-text:#2c3e50;--hint-text-sub:#7f8c8d;--hint-shadow:none;flex-direction:column;flex-grow:1;justify-content:flex-start;align-items:center;width:100%;height:100%;min-height:0;display:flex;overflow:hidden}.practice-wrapper.dark-mode{--f1-bg:#b71c1c;--f1-bd:#7f0000;--f2-bg:#e65100;--f2-bd:#ac1900;--f3-bg:#f57f17;--f3-bd:#bc5100;--f4-bg:#1b5e20;--f4-bd:#030;--f5-bg:#006064;--f5-bd:#00363a;--f6-bg:#01579b;--f6-bd:#002f6c;--f7-bg:#4a148c;--f7-bd:#12005e;--f8-bg:#880e4f;--f8-bd:#560027;--f9-bg:#212121;--f9-bd:#000;--hint-text:#fff;--hint-text-sub:#ffffffb3;--hint-shadow:0 2px 4px #000c}.practice-display-card{--practice-display-space:390px;background:var(--card-bg);border:1px solid var(--border-color);box-sizing:border-box;border-radius:12px;flex-direction:column;flex-grow:1;align-items:center;gap:14px;width:100%;max-width:none;min-height:0;margin-bottom:20px;padding:20px;display:flex;box-shadow:0 4px 12px #0000000d}.practice-focus-header{justify-content:space-between;align-items:flex-start;gap:20px;width:100%;display:flex}.practice-focus-copy{text-align:left;min-width:0}.practice-kicker{color:var(--primary-color);align-items:center;gap:6px;font-size:13px;font-weight:800;line-height:1.2;display:inline-flex}.practice-focus-copy h1{color:var(--text-color);letter-spacing:0;margin:6px 0;font-size:30px;line-height:1.15}.practice-focus-copy p{color:var(--nav-text);margin:0;font-size:15px;font-weight:600;line-height:1.45}.practice-shortcut-badge{border:1px solid 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20px;display:flex}.pill-group{gap:8px;display:flex}.pill-divider{background:var(--border-color);width:2px;height:24px}.pill-btn{color:var(--nav-text);cursor:pointer;background:0 0;border:none;border-radius:30px;align-items:center;gap:6px;padding:8px 16px;font-size:14px;font-weight:700;transition:all .2s;display:flex}.pill-btn:hover{background:#007bff1a}.pill-btn.active{background:var(--primary-color);color:#fff;box-shadow:0 2px 8px #007bff4d}.target-area{flex-direction:column;flex:auto;justify-content:center;align-items:center;width:100%;min-height:0;padding-top:0;display:flex;position:relative;overflow:hidden}.status-text{text-align:center;min-height:32px;margin-bottom:14px;font-size:20px;font-weight:700;line-height:1.25;transition:color .2s}.target-char-container{flex:auto;justify-content:center;align-items:center;width:100%;min-height:0;display:flex}.target-char{font-size:clamp(54px, calc(var(--practice-display-space) * .32), 140px);color:var(--text-color);font-weight:700;line-height:1;transition:transform .1s}.shake{animation:.3s cubic-bezier(.36,.07,.19,.97) both shakeAnim;color:#e74c3c!important}@keyframes shakeAnim{10%,90%{transform:translate(-4px)}20%,80%{transform:translate(8px)}30%,50%,70%{transform:translate(-16px)}40%,60%{transform:translate(16px)}}.start-action-btn{color:#fff;cursor:pointer;background:#e74c3c;border:none;border-radius:12px;justify-content:center;align-items:center;gap:12px;padding:18px 40px;font-size:26px;font-weight:700;transition:all .2s;display:flex;box-shadow:0 8px 24px #e74c3c66}.start-action-btn:hover{background:#ff6b6b;transform:scale(1.05)!important}.start-action-btn:active{box-shadow:0 4px 10px #e74c3c66;transform:scale(.95)!important}.start-action-btn.pulse-anim{animation:2s ease-in-out infinite pulseAnim}@keyframes pulseAnim{0%{transform:scale(1);box-shadow:0 8px 24px #e74c3c66}50%{transform:scale(1.05);box-shadow:0 15px 40px #e74c3cb3}to{transform:scale(1);box-shadow:0 8px 24px #e74c3c66}}.keyboard-container{background:0 0;border-radius:20px;flex-direction:column;align-items:flex-start;gap:12px;width:fit-content;margin:0 auto;padding:20px;display:flex;position:relative}.practice-mode-kbd{box-sizing:border-box;width:100%}.kbd-row{gap:12px;display:flex}.kbd-row-2{margin-left:52px}.kbd-row-3{margin-left:78px}.kbd-row-4{margin-left:130px}.kbd-row-5{justify-content:center;width:100%;margin-left:0}.key{background-color:var(--card-bg);border-bottom:8px solid var(--border-color);cursor:not-allowed;-webkit-user-select:none;user-select:none;box-sizing:border-box;border-left:1px solid var(--border-color);border-right:1px solid var(--border-color);border-radius:12px;flex-direction:column;flex-shrink:0;justify-content:center;align-items:center;width:104px;height:104px;transition:background-color .1s,border-color .1s,transform .1s;display:flex;position:relative;top:0}.keyboard-container.is-touch .key{cursor:pointer!important;pointer-events:auto!important}.key.space{width:720px;margin:0 auto}.key.disabled-key{opacity:.15;pointer-events:none}.key-text{color:var(--text-color);z-index:10;font-size:36px;font-weight:700;position:relative}.key-en{color:var(--nav-text);z-index:10;margin-bottom:4px;font-size:20px;font-weight:500;position:relative}.key-cj{color:var(--text-color);z-index:10;font-size:36px;font-weight:700;position:relative}.keyboard-container.show-hints .finger-1{background-color:var(--f1-bg);border-bottom-color:var(--f1-bd)}.keyboard-container.show-hints .finger-2{background-color:var(--f2-bg);border-bottom-color:var(--f2-bd)}.keyboard-container.show-hints .finger-3{background-color:var(--f3-bg);border-bottom-color:var(--f3-bd)}.keyboard-container.show-hints .finger-4{background-color:var(--f4-bg);border-bottom-color:var(--f4-bd)}.keyboard-container.show-hints .finger-5{background-color:var(--f5-bg);border-bottom-color:var(--f5-bd)}.keyboard-container.show-hints .finger-6{background-color:var(--f6-bg);border-bottom-color:var(--f6-bd)}.keyboard-container.show-hints .finger-7{background-color:var(--f7-bg);border-bottom-color:var(--f7-bd)}.keyboard-container.show-hints .finger-8{background-color:var(--f8-bg);border-bottom-color:var(--f8-bd)}.keyboard-container.show-hints .finger-9{background-color:var(--f9-bg);border-bottom-color:var(--f9-bd)}.keyboard-container.show-hints .key-en{color:var(--hint-text-sub);text-shadow:var(--hint-shadow)}.keyboard-container.show-hints .key-cj,.keyboard-container.show-hints .key-text{color:var(--hint-text);text-shadow:var(--hint-shadow)}.key.active-target{top:-4px;transform:scale(1.05)}.key.active-target:after{content:"";border:6px solid var(--primary-color);pointer-events:none;z-index:5;border-radius:16px;animation:1.5s ease-in-out infinite targetBreathe;position:absolute;inset:-8px -8px -16px}@keyframes targetBreathe{0%,to{opacity:.2;box-shadow:0 0 10px var(--primary-color)}50%{opacity:1;box-shadow:0 0 30px var(--primary-color)}}#hands-overlay{pointer-events:none;z-index:20;opacity:1;transition:opacity .3s;position:absolute;inset:0}#hands-overlay.ghost-hidden{opacity:0}.finger-wrapper{z-index:25;transition:all .2s;position:absolute}.svg-skin{fill:none;stroke:#2c3e50bf;stroke-width:8px;stroke-linecap:round;transition:all .15s,stroke .3s}.finger-wrapper.active-finger{z-index:30;animation:1.5s ease-in-out infinite breatheLightFinger}.finger-wrapper.active-finger .svg-skin{stroke-width:13px;stroke:#444!important}@keyframes breatheLightFinger{0%,to{opacity:0;filter:drop-shadow(0 0 8px #4446)drop-shadow(0 0 15px #4443)}50%{opacity:1;filter:drop-shadow(0 0 20px #444444e6)drop-shadow(0 0 35px #4449)}}.practice-wrapper.dark-mode .svg-skin{stroke:#ecf0f199}.practice-wrapper.dark-mode .finger-wrapper.active-finger{animation:1.5s ease-in-out infinite breatheDarkFinger}.practice-wrapper.dark-mode .finger-wrapper.active-finger .svg-skin{stroke:#fff!important}@keyframes breatheDarkFinger{0%,to{opacity:0;filter:drop-shadow(0 0 8px #fff6)drop-shadow(0 0 15px #fff3)}50%{opacity:1;filter:drop-shadow(0 0 24px #fff)drop-shadow(0 0 40px #ffffffb3)}}.prac-modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:9999;background:#00000080;justify-content:center;align-items:center;width:100vw;height:100vh;display:flex;position:fixed;top:0;left:0}.prac-modal-content{background:var(--card-bg);color:var(--text-color);text-align:center;border:1px solid var(--border-color);border-radius:24px;max-width:500px;padding:40px;box-shadow:0 20px 40px #0003}.prac-modal-content h2{margin-top:0;font-size:28px}.prac-modal-content p{color:var(--nav-text);margin-bottom:30px;font-size:18px;line-height:1.6}.prac-modal-btn{background:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:12px;width:100%;padding:16px 32px;font-size:20px;font-weight:700}.prac-modal-btn.error-btn{background:#e74c3c}@media (width<=1024px){.keyboard-viewport{justify-content:center!important;width:100%!important;display:flex!important;overflow:visible!important}.practice-mode-kbd{width:100%!important;padding:14px 20px 20px!important}.practice-focus-header{box-sizing:border-box;flex-direction:column;gap:8px;padding:0 8px}.practice-kicker{font-size:11px}.practice-focus-copy h1{margin:4px 0;font-size:20px}.practice-focus-copy p{display:none}.practice-shortcut-badge{box-sizing:border-box;width:100%;min-height:34px;font-size:12px}.practice-guidance-strip{grid-template-columns:1fr;gap:4px;padding:6px;display:none}.practice-guidance-item{text-align:left;box-sizing:border-box;justify-content:flex-start;min-height:28px;padding:0 8px;font-size:11px}.settings-pill-bar{white-space:normal;border-radius:12px;flex-wrap:wrap;justify-content:center;gap:4px;margin-bottom:5px;padding:6px}.pill-group{flex-wrap:wrap;justify-content:center;gap:4px}.pill-divider{display:none}.pill-btn{gap:4px;padding:4px 8px;font-size:11px}.practice-display-card{border-radius:8px;gap:6px;margin-bottom:0;padding:8px 10px}.target-area{min-height:0;padding-top:0}.status-text{min-height:24px;margin-bottom:0;font-size:14px}.target-char-container{min-height:0}.start-action-btn{padding:12px 28px;font-size:18px}.prac-modal-content{box-sizing:border-box;border-radius:12px;width:calc(100vw - 32px);padding:24px 18px}.prac-modal-content h2{font-size:20px}.prac-modal-content p{font-size:15px}.prac-modal-btn{padding:12px 18px;font-size:16px}}@media screen and (width<=1024px) and (height<=670px){.practice-display-card{margin-bottom:5px!important;padding:5px 2px!important}.practice-focus-header{gap:4px!important}.practice-shortcut-badge{min-height:28px!important}.settings-pill-bar{margin-bottom:4px!important;padding:4px!important}.pill-btn{padding:4px 8px!important;font-size:11px!important}.target-area{min-height:60px!important;padding-top:0!important}.target-char-container{min-height:45px!important}.target-char{font-size:40px!important}.status-text{min-height:16px!important;margin-bottom:4px!important;font-size:12px!important}.start-action-btn{padding:8px 20px!important;font-size:15px!important}}.training-wrapper{justify-content:flex-start;height:100%;min-height:0;overflow:hidden}.training-master-container{overflow:visible}.training-master-scaler{justify-content:flex-start}.training-display-card{--training-display-space:360px;--training-target-size:clamp(160px, calc(var(--training-display-space) - 180px), 280px);--training-input-height:clamp(42px, calc(var(--training-display-space) - 430px), 52px);--training-action-height:clamp(40px, calc(var(--training-display-space) - 440px), 48px);gap:14px;max-width:none;height:auto;min-height:0}.training-display-card .target-area{flex:auto;gap:8px;min-height:0;padding-top:0;overflow:hidden}.training-level-tabs{background:var(--bg-color);border:1px solid var(--border-color);box-sizing:border-box;border-radius:8px;flex-wrap:wrap;justify-content:center;align-items:center;gap:6px;width:100%;padding:6px;display:flex}.training-level-tab{min-height:38px;color:var(--nav-text);cursor:pointer;background:0 0;border:none;border-radius:8px;padding:8px 14px;font-size:14px;font-weight:700;transition:background .2s,color .2s,box-shadow .2s}.training-level-tab:hover{color:var(--text-color);background:#007bff1a}.training-level-tab.active{background:var(--primary-color);color:#fff;box-shadow:0 2px 8px #007bff40}.training-level-tab:disabled{opacity:.65;cursor:wait}.training-vocab-count{color:var(--nav-text);opacity:.75;font-size:14px;font-weight:700}.training-target-container{flex-direction:column;flex:none;gap:14px;min-height:0}.training-character-breakdown{width:min(var(--training-target-size), 64vw);max-width:280px}.training-character-breakdown.character-breakdown .character-breakdown__box{max-width:var(--training-target-size);background:var(--bg-color);border-radius:8px}.training-code-input-shell{width:min(360px,80vw);height:var(--training-input-height);min-height:var(--training-input-height);flex:0 0 var(--training-input-height);border:2px solid var(--border-color);background:var(--bg-color);color:var(--text-color);box-sizing:border-box;cursor:text;border-radius:8px;justify-content:center;align-items:center;transition:border-color .2s,box-shadow .2s;display:flex;position:relative;overflow:hidden}.training-code-input-shell:focus-within{border-color:var(--primary-color);box-shadow:0 0 0 3px #007bff29}.training-code-input-shell--feedback-wrong{border-color:var(--error-color,#e74c3c);background:#e74c3c29;box-shadow:0 0 0 3px #e74c3c29}.training-code-input-shell--feedback-correct{border-color:var(--success-color,#2ecc71);background:#2ecc7129;box-shadow:0 0 0 3px #2ecc7129}.training-code-input{color:#0000;caret-color:#0000;opacity:0;cursor:text;background:0 0;border:0;outline:none;width:100%;height:100%;padding:0;position:absolute;inset:0}.training-code-visual{box-sizing:border-box;text-align:center;pointer-events:none;flex-direction:column;justify-content:center;align-items:center;gap:4px;width:100%;height:100%;padding:0 16px;line-height:1;display:flex}.training-code-visual__en{color:var(--text-color);letter-spacing:0;font-size:24px;font-weight:800}.training-code-visual__cj{color:var(--text-color);letter-spacing:0;font-size:28px;font-weight:800}.training-code-input-shell--both .training-code-visual__en{color:var(--nav-text);font-size:15px;font-weight:700}.training-code-input-shell--both .training-code-visual__cj{font-size:24px}.training-code-visual__placeholder{color:var(--nav-text);opacity:.45;font-size:18px;font-weight:800}.training-code-visual__message{color:var(--nav-text);overflow-wrap:anywhere;font-size:16px;font-weight:800;line-height:1.2}.training-code-feedback-icon{stroke-width:3.2px;width:30px;height:30px}.training-code-input-shell--feedback-wrong .training-code-feedback-icon{color:var(--error-color,#e74c3c)}.training-code-input-shell--feedback-correct .training-code-feedback-icon{color:var(--success-color,#2ecc71)}.training-action-row{flex:none;grid-template-columns:minmax(108px,auto) minmax(0,1fr) minmax(108px,auto) minmax(150px,auto);align-items:stretch;gap:10px;width:100%;max-width:900px;margin-top:0;display:grid}.training-action-btn{min-height:var(--training-action-height);border:1px solid var(--border-color);background:var(--card-bg);color:var(--text-color);cursor:pointer;white-space:nowrap;border-radius:8px;justify-content:center;align-items:center;gap:6px;font-size:16px;font-weight:800;transition:background .2s,color .2s,border-color .2s,transform .1s;display:flex}.training-action-btn:hover{border-color:var(--primary-color);transform:translateY(-1px)}.training-action-btn.active{background:var(--primary-color);border-color:var(--primary-color);color:#fff}.training-action-btn--five-color.active{background:linear-gradient(90deg,#d32f2f,#f57c00,#2e7d32,#1565c0,#6a1b9a);border-color:#0000}.training-hint-box{min-height:var(--training-action-height);border:1px solid var(--border-color);background:var(--bg-color);color:var(--text-color);box-sizing:border-box;text-align:center;overflow-wrap:anywhere;border-radius:8px;justify-content:center;align-items:center;padding:0 14px;font-size:17px;font-weight:800;line-height:1.25;display:flex}.training-mode-kbd .key.answer-highlight{overflow:clip;background:var(--answer-key-bg)!important;background-color:var(--answer-key-bg)!important;border-top:0!important;border-left:0!important;border-right:0!important;border-bottom:8px solid color-mix(in srgb, var(--answer-key-edge) 68%, #000)!important;box-shadow:0 0 18px color-mix(in srgb, var(--answer-key-glow) 55%, transparent)!important;color:#fff!important;background-clip:border-box!important;transform:translateY(-2px)!important}.training-mode-kbd .key.answer-highlight--animating{animation:.32s ease-out answerKeyPulse;transform:translateY(-5px)scale(1.06)!important}.training-mode-kbd.kbd-no-border .key.answer-highlight{box-shadow:0 0 14px color-mix(in srgb, var(--answer-key-glow) 42%, transparent)!important;border:none!important;transform:translateY(4px)!important}.training-mode-kbd.kbd-no-border .key.answer-highlight--animating{transform:translateY(4px)scale(1.03)!important}.training-mode-kbd .key.answer-highlight .key-en,.training-mode-kbd .key.answer-highlight .key-cj,.training-mode-kbd .key.answer-highlight .key-text{color:#fff!important;text-shadow:0 1px 2px #00000073!important}.answer-key-order-badge{z-index:30;color:#fff;letter-spacing:0;text-overflow:ellipsis;white-space:nowrap;text-shadow:0 1px 2px #00000080;pointer-events:none;background:#00000047;border-radius:5px;max-width:calc(100% - 14px);padding:2px 5px;font-size:12px;font-weight:900;line-height:1.1;position:absolute;top:7px;left:8px;overflow:hidden}.answer-key-sequence{z-index:30;pointer-events:none;width:24px;position:absolute;top:0;bottom:0;left:0}.answer-key-sequence__item{white-space:nowrap;text-align:left;width:100%;padding:4px 0 0 5px;position:absolute;overflow:hidden}.answer-key-sequence__badge{color:#fff;letter-spacing:0;text-shadow:0 1px 2px #0000008c;background:#00000047;border-radius:5px;justify-content:center;align-items:center;min-width:15px;min-height:15px;padding:1px 4px;font-size:11px;font-weight:900;line-height:1.1;display:inline-flex}@keyframes answerKeyPulse{0%{filter:brightness(.92)}55%{filter:brightness(1.22)}to{filter:brightness()}}.start-action-btn:disabled{opacity:.65;cursor:wait;animation:none}@media (width<=800px){.training-display-card{--training-target-size:clamp(112px, calc(var(--training-display-space) - 260px), 230px);--training-input-height:clamp(36px, calc(var(--training-display-space) - 445px), 48px);--training-action-height:clamp(34px, calc(var(--training-display-space) - 450px), 44px);gap:8px}.training-level-tabs{gap:4px;padding:4px}.training-level-tab{min-height:30px;padding:5px 8px;font-size:12px}.training-target-container{gap:6px;min-height:0}.training-character-breakdown{width:min(var(--training-target-size), 68vw)}.training-character-breakdown.character-breakdown .character-breakdown__box{max-width:var(--training-target-size)}.training-code-input-shell{width:min(260px,78vw);height:var(--training-input-height);min-height:var(--training-input-height);flex-basis:var(--training-input-height)}.training-code-visual{padding:0 10px}.training-code-visual__en{font-size:18px}.training-code-visual__cj{font-size:22px}.training-code-input-shell--both .training-code-visual__en{font-size:12px}.training-code-input-shell--both .training-code-visual__cj{font-size:18px}.training-code-visual__placeholder{font-size:14px}.training-code-visual__message{font-size:12px}.training-action-row{grid-template-columns:86px minmax(0,1fr) 86px;gap:6px;max-width:100%}.training-action-btn{min-height:var(--training-action-height);gap:4px;font-size:13px}.training-action-btn--five-color{grid-column:1/-1}.training-hint-box{min-height:var(--training-action-height);padding:0 8px;font-size:13px}.training-vocab-count{font-size:12px}}@media (width>=560px) and (width<=800px){.training-action-row{grid-template-columns:minmax(76px,auto) minmax(0,1fr) minmax(76px,auto) minmax(126px,auto)}.training-action-btn--five-color{grid-column:auto}}@media screen and (width<=800px) and (height<=670px){.training-display-card{--training-target-size:clamp(112px, calc(var(--training-display-space) - 210px), 170px);--training-input-height:clamp(36px, calc(var(--training-display-space) - 405px), 42px);--training-action-height:clamp(34px, calc(var(--training-display-space) - 410px), 40px);gap:5px!important}.training-level-tabs{padding:3px!important}.training-level-tab{min-height:26px!important;padding:3px 6px!important;font-size:11px!important}.training-target-container{gap:5px!important;min-height:0!important}.training-character-breakdown{width:min(var(--training-target-size), 58vw, 30dvh)!important}.training-character-breakdown.character-breakdown .character-breakdown__box{max-width:var(--training-target-size)!important}.training-code-input-shell{width:min(210px,72vw)!important;height:var(--training-input-height)!important;min-height:var(--training-input-height)!important;flex-basis:var(--training-input-height)!important}.training-code-visual{gap:2px!important;padding:0 8px!important}.training-code-visual__en{font-size:15px!important}.training-code-visual__cj{font-size:17px!important}.training-code-input-shell--both .training-code-visual__en{font-size:10px!important}.training-code-input-shell--both .training-code-visual__cj{font-size:15px!important}.training-code-visual__placeholder{font-size:12px!important}.training-code-visual__message{font-size:10px!important}.training-action-btn{min-height:var(--training-action-height)!important;font-size:12px!important}.training-hint-box{min-height:var(--training-action-height)!important;padding:0 6px!important;font-size:12px!important}}@keyframes popUpCenter{0%{opacity:0;transform:translate(-50%)scale(.8)}to{opacity:1;transform:translate(-50%)scale(1)}}@keyframes popUpAbsoluteCenter{0%{opacity:0;transform:translate(-50%,-50%)scale(.8)}to{opacity:1;transform:translate(-50%,-50%)scale(1)}}.kbd-settings-popup{background:var(--card-bg);box-sizing:border-box;z-index:10001;border:1px solid var(--border-color);transform-origin:bottom;width:100%;max-width:450px;color:var(--text-color);border-radius:24px;padding:30px 35px;animation:.2s cubic-bezier(.175,.885,.32,1.15) forwards popUpCenter;position:fixed;transform:translate(-50%);box-shadow:0 10px 40px #0003}.kbd-settings-popup.centered-mode{transform-origin:50%!important;max-height:90vh!important;animation:.2s cubic-bezier(.175,.885,.32,1.15) forwards popUpAbsoluteCenter!important;top:50%!important;bottom:auto!important;left:50%!important;overflow-y:auto!important}.close-popup-btn{background:var(--bg-color);border:1px solid var(--border-color);color:var(--nav-text);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;padding:0;transition:all .2s;display:flex;position:absolute;top:15px;right:15px}.close-popup-btn:hover{background:var(--border-color);color:var(--text-color)}.kbd-setting-group{margin-bottom:24px}.kbd-setting-group label{color:var(--nav-text);margin-bottom:12px;font-size:15px;font-weight:700;display:block}.kbd-setting-options{flex-wrap:wrap;gap:10px;display:flex}.kbd-setting-options button{border:1px solid var(--border-color);background:var(--bg-color);color:var(--text-color);cursor:pointer;border-radius:12px;padding:10px 18px;font-size:14px;font-weight:700;transition:all .2s}.kbd-setting-options button:hover{background:#007bff1a}.kbd-setting-options button.active{background:var(--primary-color);color:#fff;border-color:var(--primary-color);box-shadow:0 4px 12px #007bff4d}.kbd-theme-blue .key{background-color:#e3f2fd!important;border-bottom-color:#90caf9!important;border-left-color:#bbdefb!important;border-right-color:#bbdefb!important}.kbd-theme-blue .key-en,.kbd-theme-blue .key-cj,.kbd-theme-blue .key-text{color:#0d47a1!important}.kbd-theme-green .key{background-color:#e8f5e9!important;border-bottom-color:#a5d6a7!important;border-left-color:#c8e6c9!important;border-right-color:#c8e6c9!important}.kbd-theme-green .key-en,.kbd-theme-green .key-cj,.kbd-theme-green .key-text{color:#1b5e20!important}.kbd-theme-dark .key{background-color:#2d3748!important;border-bottom-color:#1a202c!important;border-left-color:#4a5568!important;border-right-color:#4a5568!important}.kbd-theme-dark .key-en,.kbd-theme-dark .key-cj,.kbd-theme-dark .key-text{color:#f7fafc!important}.kbd-no-border .key{transform:translateY(4px);border:none!important;border-radius:10px!important;box-shadow:0 5px 12px #0000001a!important}.kbd-no-border .key.active-target{box-shadow:0 0 20px var(--primary-color)!important;transform:translateY(0)scale(1.05)!important}.training-mode-kbd .key{height:var(--training-key-height,104px);min-height:var(--training-key-height,104px);overflow:hidden;cursor:pointer!important}.training-mode-kbd .key>span,.training-mode-kbd .key>div{max-width:100%}.disabled-key{filter:grayscale();opacity:.35!important;pointer-events:none!important;cursor:not-allowed!important}.keyboard-glow-active{background-color:#007bff0d!important;border-radius:12px!important}.keyboard-glow-active:after{content:"";border-radius:inherit;z-index:10;pointer-events:none;position:absolute;inset:0;box-shadow:inset 0 0 0 4px var(--primary-color), inset 0 0 30px #007bff66!important}@media (width<=767px){.kbd-settings-popup{width:96vw!important;max-width:380px!important;max-height:calc(100vh - 80px)!important;padding:18px 12px!important;overflow-y:auto!important}.close-popup-btn{width:30px!important;height:30px!important;top:12px!important;right:12px!important}.kbd-settings-popup h3{margin-bottom:14px!important;font-size:17px!important}.kbd-setting-group{margin-bottom:14px!important}.kbd-setting-group label{margin-bottom:6px!important;font-size:13px!important}.kbd-setting-options{gap:5px!important}.kbd-setting-options button{padding:8px!important;font-size:13px!important}.scale-slider-container span{font-size:12px!important}.scale-slider-container span:last-child{font-size:16px!important}.kbd-settings-popup .apply-btn{border-radius:10px!important;margin-top:0!important;padding:12px!important;font-size:15px!important}}*,:before,:after{box-sizing:border-box}:root{--bg-color:#f4f7f6;--text-color:#333;--card-bg:#fff;--nav-bg:#fff;--border-color:#e0e0e0;--primary-color:#007bff;--primary-hover:#0056b3;--nav-text:#666;--nav-active:#007bff;--shadow:0 2px 10px #0000000d}[data-theme=dark]{--bg-color:#121212;--text-color:#e0e0e0;--card-bg:#1e1e1e;--nav-bg:#1e1e1e;--border-color:#333;--primary-color:#4a90e2;--primary-hover:#357abd;--nav-text:#aaa;--nav-active:#4a90e2;--shadow:0 2px 10px #00000080}button,input,textarea,select{font-family:inherit}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--bg-color);color:var(--text-color);min-height:100vh;margin:0;padding:0;font-family:Inter,Noto Sans HK,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;transition:background-color .3s,color .3s}.card{background-color:var(--card-bg);box-shadow:var(--shadow);border:1px solid var(--border-color);border-radius:12px;margin-bottom:20px;padding:20px}.app-container{flex-direction:column;width:100%;max-width:1440px;min-height:100vh;margin:0 auto;display:flex}.auth-container{box-sizing:border-box;justify-content:center;align-items:center;width:100%;margin-top:30px;padding:0 20px;display:flex}.auth-box{background:var(--card-bg);color:var(--text-color);border:1px solid var(--border-color);border-radius:12px;width:100%;max-width:400px;padding:40px;transition:background .3s,color .3s,border-color .3s;box-shadow:0 8px 24px #0000001a}.auth-box h2{text-align:center;margin-top:0;margin-bottom:25px}.input-group{margin-bottom:20px}.input-group label{color:var(--text-color);margin-bottom:8px;font-size:.9rem;font-weight:700;display:block}.input-group input{box-sizing:border-box;background:var(--bg-color);width:100%;color:var(--text-color);border:1px solid var(--border-color);border-radius:8px;padding:12px;font-size:16px;transition:background .3s,color .3s}.input-group input:focus{border-color:var(--primary-color);outline:none;box-shadow:0 0 0 2px #007bff33}.school-notice{color:var(--nav-text);background-color:var(--bg-color);border:1px solid var(--border-color);border-left:4px solid #ffba08;border-radius:6px;margin-top:12px;padding:10px;font-size:.85rem;line-height:1.4}.submit-btn{background:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:8px;width:100%;margin-top:10px;padding:12px;font-size:16px;font-weight:700;transition:opacity .2s}.submit-btn:hover{opacity:.9}.submit-btn:disabled{cursor:not-allowed;background:#9e9e9e}.message-box{border-radius:6px;margin-bottom:20px;padding:10px;font-size:.9rem;font-weight:700}.message-box.error{color:#e53935;background-color:#e539351a;border:1px solid #e539354d}.message-box.success{color:#43a047;background-color:#43a0471a;border:1px solid #43a0474d}