:root,[data-theme=paper]{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--background:#f8f7f2;--background-elevated:#fff;--background-secondary:#eef2ed;--background-tertiary:#dce5de;--foreground:#192f2d;--text-primary:#192f2d;--text-secondary:#526461;--text-tertiary:#677873;--text-muted:#60716c;--primary:#205c4e;--primary-hover:#164538;--primary-soft:#eaf0e8;--accent:#c45b45;--accent-soft:#fff0e8;--success:#26704b;--success-soft:#e5f3e8;--warning:#996317;--error:#b13f37;--card-bg:var(--background-elevated);--card-border:#dce4de;--secondary:var(--background-secondary);--border:var(--card-border);--bg-secondary:var(--background-secondary);--bg-color:var(--background);--card-hover:var(--primary-soft);--word-of-day-bg:#205c4e;--word-of-day-text:#fff;--btn-inactive-text:var(--text-muted);--nav-bg:var(--background);--nav-border:var(--card-border);--nav-text:var(--text-secondary);--nav-text-hover:var(--primary);--font-heading:"Avenir Next", "Segoe UI", system-ui, sans-serif;--font-body:"Avenir Next", "Segoe UI", system-ui, sans-serif;--font-sans:"Avenir Next", "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;--font-display:var(--font-heading);--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:32px;--space-2xl:48px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--radius-full:9999px;--shadow-sm:0 2px 4px #16392d0a;--shadow-md:0 12px 36px #16392d14;--shadow-lg:0 24px 64px #16392d1f;--shadow-glow:none;--ease-out:cubic-bezier(.25,.46,.45,.94);--ease-in-out:cubic-bezier(.65,0,.35,1);--spring:var(--ease-out);--blur-sm:10px;--blur-md:20px;--blur-lg:40px}[data-theme=midnight]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--background:#142320;--background-elevated:#1c302b;--background-secondary:#243b34;--background-tertiary:#345147;--foreground:#eef5ef;--text-primary:#eef5ef;--text-secondary:#bccfc4;--text-tertiary:#a1b8ab;--text-muted:#acc2b5;--primary:#70c8b2;--primary-hover:#a0e0cc;--primary-soft:#28493e;--accent:#f19d82;--accent-soft:#50392f;--success:#95d5a6;--success-soft:#294837;--warning:#f1c572;--error:#ffaba0;--card-border:#395046;--word-of-day-bg:#255e52;--nav-bg:var(--background);--shadow-sm:0 2px 4px #0000001f;--shadow-md:0 12px 36px #00000026;--shadow-lg:0 24px 64px #0003}*{box-sizing:border-box;margin:0;padding:0}html,body{background:var(--background);max-width:100vw;color:var(--foreground);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-feature-settings:"kern" 1, "liga" 1;overflow-x:hidden}a{color:inherit;text-decoration:none}.container{max-width:600px;padding:var(--space-md);flex-direction:column;min-height:100vh;margin:0 auto;display:flex}.site-root{min-height:100vh}.site-main{min-height:65vh;padding-bottom:24px}.skip-link{z-index:200;background:var(--primary);color:var(--background);border-radius:8px;padding:12px 18px;position:fixed;top:-100px;left:16px}.skip-link:focus{top:12px}.site-header{z-index:90;background:var(--background);border-bottom:1px solid var(--card-border);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:24px;min-height:68px;padding:12px max(24px,50% - 590px);display:grid;position:sticky;top:0}.site-brand{letter-spacing:-.02em;white-space:nowrap;color:var(--primary);align-items:center;gap:10px;font-weight:650;display:inline-flex}.site-header nav{flex-wrap:wrap;justify-content:center;gap:10px 24px;display:flex}.site-header nav a{color:var(--text-secondary);font-size:14px;font-weight:700}.site-header nav a[data-active=true]{color:var(--primary);text-underline-offset:9px;text-decoration:underline;text-decoration-thickness:2px}.site-account{border:1px solid var(--card-border);white-space:nowrap;border-radius:10px;align-items:center;gap:7px;padding:9px 14px;font-size:14px;font-weight:600;display:inline-flex}.site-footer{border-top:1px solid var(--card-border);width:min(1180px,100% - 48px);color:var(--text-secondary);grid-template-columns:1.7fr repeat(3,1fr);gap:32px;margin:0 auto;padding:42px 0 110px;display:grid}.site-footer p{max-width:280px;margin:18px 0 10px}.site-footer small{max-width:280px;font-size:12px;line-height:1.6;display:block}.site-footer nav{align-content:start;gap:9px;font-size:14px;display:grid}.site-footer strong{color:var(--text-primary)}.legal-content{margin-top:40px;line-height:1.75}.legal-content h2{margin-top:32px;margin-bottom:8px}.legal-content a{color:var(--primary);text-decoration:underline}h1{letter-spacing:-.02em;margin-bottom:var(--space-md);color:var(--text-primary);font-size:2rem;font-weight:700}h2{letter-spacing:-.01em;margin-bottom:var(--space-sm);color:var(--text-primary);font-size:1.375rem;font-weight:600}h3{letter-spacing:-.01em;color:var(--text-primary);font-size:1.125rem;font-weight:600}p{color:var(--text-secondary);line-height:1.6}.btn{border-radius:var(--radius-md);transition:background .22s var(--ease-out), border-color .22s var(--ease-out), color .22s var(--ease-out);cursor:pointer;justify-content:center;align-items:center;gap:var(--space-sm);border:none;padding:12px 20px;font-size:15px;font-weight:500;display:inline-flex}.btn:active{transform:scale(.98)}.btn-primary{background:var(--primary);color:var(--background);box-shadow:var(--shadow-sm)}.btn-primary:hover{background:var(--primary-hover);box-shadow:var(--shadow-md)}.btn:disabled{cursor:not-allowed;opacity:.6;box-shadow:none;transform:none}.card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:var(--space-lg);margin-bottom:var(--space-md);box-shadow:var(--shadow-sm);transition:all .3s var(--ease-out)}.card:hover{border-color:var(--card-border)}.hover-card:hover{transform:translateY(-2px)}.input{background:var(--background-secondary);border:1px solid var(--card-border);border-radius:var(--radius-md);width:100%;color:var(--foreground);transition:background .22s var(--ease-out), border-color .22s var(--ease-out), color .22s var(--ease-out);padding:14px 16px;font-size:17px}.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft);outline:none}.input::placeholder{color:var(--text-tertiary)}.bottom-nav{background:var(--nav-bg,#1c1c1ee6);border-top:1px solid var(--nav-border,#ffffff14);padding:8px 0;padding-bottom:max(8px, env(safe-area-inset-bottom));z-index:100;justify-content:space-around;display:flex;position:fixed;bottom:0;left:0;right:0}@media (min-width:821px){.bottom-nav{display:none}.site-main{padding-bottom:0}}@media (max-width:820px){.site-header{grid-template-columns:1fr auto;gap:12px;min-height:64px;padding:0 20px;position:static}.site-header>nav{display:none}}@media (max-width:680px){.site-footer{grid-template-columns:1fr 1fr;gap:26px}.site-footer>div{grid-column:1/-1}}.nav-item{color:var(--nav-text,var(--text-tertiary));transition:color .2s var(--ease-out);border-radius:var(--radius-md);flex-direction:column;align-items:center;gap:4px;padding:8px 16px;font-size:10px;font-weight:500;display:flex}.nav-item:hover{color:var(--nav-text-hover,var(--text-secondary))}.nav-item.active{color:var(--primary)}.nav-item .icon{font-size:24px}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.animate-fade-in{animation:fadeIn .4s var(--ease-out) forwards}.animate-fade-in-up{animation:fadeInUp .5s var(--ease-out) forwards}.animate-scale-in{animation:scaleIn .3s var(--spring) forwards}.stagger-1{animation-delay:50ms}.stagger-2{animation-delay:.1s}.stagger-3{animation-delay:.15s}.stagger-4{animation-delay:.2s}.stagger-5{animation-delay:.25s}.stagger-6{animation-delay:.3s}.auth-container{min-height:80vh;padding:var(--space-md);justify-content:center;align-items:center;display:flex}.auth-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-xl);padding:var(--space-xl);width:100%;max-width:400px;box-shadow:var(--shadow-lg)}.auth-card h1{text-align:center;margin-bottom:var(--space-sm);font-size:1.75rem}.auth-subtitle{text-align:center;margin-bottom:var(--space-xl);color:var(--text-secondary);font-size:15px}.auth-form{gap:var(--space-lg);flex-direction:column;display:flex}.form-group{gap:var(--space-sm);flex-direction:column;display:flex}.form-group label{color:var(--text-secondary);letter-spacing:0;font-size:13px;font-weight:600}.form-group input{border-radius:var(--radius-md);background:var(--background-secondary);border:1px solid var(--card-border);color:var(--foreground);transition:background .22s var(--ease-out), border-color .22s var(--ease-out), color .22s var(--ease-out);padding:14px 16px;font-size:17px}.form-group input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft);outline:none}.auth-button{background:var(--primary);color:#fff;border-radius:var(--radius-md);cursor:pointer;transition:background .22s var(--ease-out), border-color .22s var(--ease-out), color .22s var(--ease-out);margin-top:var(--space-sm);border:none;padding:14px;font-size:17px;font-weight:600}.auth-button:hover{background:var(--primary-hover)}.auth-button:active{transform:scale(.98)}.auth-button:disabled{opacity:.5;cursor:not-allowed}.auth-footer{text-align:center;margin-top:var(--space-lg);color:var(--text-secondary);font-size:15px}.auth-footer a{color:var(--primary);font-weight:600}.auth-footer a:hover{text-decoration:underline}.error-message{color:var(--error);border-radius:var(--radius-md);margin-bottom:var(--space-lg);text-align:center;background:#ff453a1a;border:1px solid #ff453a33;padding:12px;font-size:14px}@media print{.bottom-nav,.btn,header button{display:none!important}body{color:#000;background:#fff}.card{box-shadow:none;break-inside:avoid;border:1px solid #ccc}main{padding-bottom:0!important}}@keyframes shake{10%,90%{transform:translate(-1px)}20%,80%{transform:translate(2px)}30%,50%,70%{transform:translate(-4px)}40%,60%{transform:translate(4px)}}.shake-screen,.shake{animation:.5s cubic-bezier(.36,.07,.19,.97) both shake}@keyframes spin{to{transform:rotate(360deg)}}.challenge-map-container{width:100%;max-width:500px;padding:var(--space-md);align-items:center;gap:var(--space-xl);overflow-anchor:none;overscroll-behavior:contain;flex-direction:column;margin:0 auto;padding-bottom:6rem;display:flex}.level-tabs-container{z-index:50;width:100%;padding:var(--space-sm) 0;background:linear-gradient(180deg, var(--background) 0%, var(--background) 80%, transparent 100%);margin-bottom:var(--space-sm);position:sticky;top:0;overflow:visible}.level-tabs{gap:var(--space-sm);padding:4px 0;padding-right:var(--space-xl);scrollbar-width:none;-ms-overflow-style:none;margin-right:-16px;display:flex;overflow-x:auto}.level-tabs:after{content:"";width:var(--space-md);flex-shrink:0}.level-tabs::-webkit-scrollbar{display:none}.level-tab{border-radius:var(--radius-md);border:1px solid var(--card-border);background:var(--card-bg);color:var(--text-secondary);cursor:pointer;transition:background .22s var(--ease-out), border-color .22s var(--ease-out), color .22s var(--ease-out);flex-direction:column;flex:1 0 0;align-items:center;gap:2px;min-width:0;padding:10px 8px;display:flex}.level-tab:hover{border-color:var(--primary);color:var(--text-primary)}.level-tab.active{background:var(--primary);color:#fff;box-shadow:var(--shadow-glow);border-color:#0000}.level-tab-name{white-space:nowrap;font-size:13px;font-weight:600}.level-tab-progress{opacity:.7;font-size:11px}.level-tab.active .level-tab-progress{opacity:.9}.map-level-card{-webkit-user-select:none;user-select:none;flex-direction:column;gap:0;width:100%;display:flex;position:relative}.map-level-header{padding:var(--space-lg);border-radius:var(--radius-xl) var(--radius-xl) 0 0;color:#fff;text-align:center;z-index:10;position:relative}.map-level-header h2{text-shadow:0 2px 4px #0003;color:#fff;margin:0;font-size:1.375rem;font-weight:700}.map-level-header p{opacity:.9;color:#fff;margin:4px 0 0;font-size:14px}.map-nodes-area{background:var(--card-bg);border-radius:0 0 var(--radius-xl) var(--radius-xl);border:1px solid var(--card-border);width:100%;min-height:850px;box-shadow:var(--shadow-md);border-top:none;position:relative;overflow:hidden}.map-decorations{pointer-events:none;z-index:1;width:100%;height:100%;color:var(--foreground);opacity:.5;position:absolute;top:0;left:0}.map-paths{pointer-events:none;z-index:2;width:100%;height:100%;position:absolute;top:0;left:0}.map-loading{justify-content:center;align-items:center;gap:var(--space-md);min-height:300px;color:var(--text-secondary);flex-direction:column;display:flex}.map-loading-spinner{border:3px solid var(--card-border);border-top-color:var(--primary);border-radius:50%;width:40px;height:40px;animation:1s linear infinite spin}.map-node{z-index:20;position:absolute;transform:translate(-50%)translateY(-50%)}.map-node.label-right .map-node-label{position:absolute;top:50%;left:calc(100% + 8px);transform:translateY(-50%)}.map-node.label-left .map-node-label{position:absolute;top:50%;right:calc(100% + 8px);transform:translateY(-50%)}.map-node-btn{cursor:pointer;background:var(--background-secondary);width:64px;height:64px;box-shadow:var(--shadow-md);transition:all .3s var(--ease-out);touch-action:manipulation;-webkit-tap-highlight-color:transparent;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex;position:relative}.node-inner{border-radius:50%;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:relative}.node-icon{font-size:1.75rem;line-height:1}.sparkle-effect{color:#ffd60a;animation:1.5s ease-in-out infinite sparkle;position:absolute;top:2px;right:2px}@keyframes sparkle{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.8)}}.node-glow{background:radial-gradient(circle, var(--node-color,var(--primary)) 0%, transparent 70%);z-index:-1;opacity:.4;border-radius:50%;position:absolute;inset:-8px}.map-node-btn.locked{color:#a3a3a3;cursor:not-allowed;opacity:1;background:#e5e5e5;border:none;box-shadow:0 4px #d4d4d4}[data-theme=dark] .map-node-btn.locked{color:#636366;background:#3a3a3c;box-shadow:0 4px #2c2c2e}.map-node-btn.locked:hover{transform:none!important}.map-node-btn.completed{background:var(--success);color:#fff;box-shadow:0 4px 16px #30d15866}.map-node-btn.unlocked{color:var(--node-color,var(--primary));box-shadow:0 0 15px var(--node-color,#0a84ff80);border:3px solid var(--node-color,var(--primary));background:#fff}.completed-badge{background:var(--success);color:#fff;width:22px;height:22px;box-shadow:var(--shadow-sm);border:2px solid var(--card-bg);border-radius:50%;justify-content:center;align-items:center;display:flex;position:absolute;top:-4px;right:-4px}.map-node-label{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);z-index:30;flex-direction:column;gap:2px;max-width:120px;padding:10px 12px;display:flex}.label-title{color:var(--text-primary);font-size:13px;font-weight:600;line-height:1.3}.label-type{color:var(--text-tertiary);text-transform:capitalize;font-size:11px}.stars-container{border-radius:var(--radius-full);-webkit-backdrop-filter:blur(var(--blur-sm));backdrop-filter:blur(var(--blur-sm));background:#000000b3;gap:2px;padding:3px 6px;display:flex;position:absolute;bottom:-8px;left:50%;transform:translate(-50%)}.star-filled{filter:drop-shadow(0 0 2px #ffd60a80)}.star-empty{opacity:.3}@keyframes pulse-glow{0%{box-shadow:0 0 15px var(--node-color,#0a84ff66), 0 0 0 0 var(--node-color,#0a84ff4d)}70%{box-shadow:0 0 15px var(--node-color,#0a84ff66), 0 0 0 12px transparent}to{box-shadow:0 0 15px var(--node-color,#0a84ff66), 0 0 0 0 transparent}}.map-node-btn.unlocked{animation:2s ease-in-out infinite pulse-glow}.pinyin-stream-title{background:linear-gradient(135deg, var(--primary), var(--accent));-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-weight:700}@media (max-width:400px){.map-node-btn{width:56px;height:56px}.node-icon{font-size:1.5rem}.map-node-label{max-width:100px;padding:8px 10px}.label-title{font-size:12px}}.badge{border-radius:var(--radius-full);background:var(--primary-soft);color:var(--primary);align-items:center;padding:4px 10px;font-size:12px;font-weight:600;display:inline-flex}.progress-ring{transform:rotate(-90deg)}.progress-ring-circle{transition:stroke-dashoffset .5s var(--ease-out)}.skeleton{background:linear-gradient(90deg, var(--background-secondary) 0%, var(--background-tertiary) 50%, var(--background-secondary) 100%);border-radius:var(--radius-md);background-size:200% 100%;animation:1.5s infinite shimmer}.skeleton-text{border-radius:var(--radius-sm);width:80%;height:1em}.skeleton-title{border-radius:var(--radius-sm);width:60%;height:2rem}.skeleton-circle{border-radius:50%}.skeleton-card{width:100%;height:120px}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}.animate-fade-in,.animate-fade-in-up,.animate-scale-in{opacity:1!important;animation:none!important;transform:none!important}.skeleton{background:var(--background-tertiary)!important;animation:none!important}}.card.hover-card,.level-tab,.nav-item,.story-card,.quick-action,button:not(:disabled),[role=button],a[href]{cursor:pointer}.card.hover-card:hover,.story-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.level-tab:hover:not(.active){background:var(--background-secondary);border-color:var(--primary)}:focus-visible,button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.touch-target{justify-content:center;align-items:center;min-width:48px;min-height:48px;display:flex}.level-tab{min-height:48px}.elevation-0{box-shadow:none}.elevation-1{box-shadow:var(--shadow-sm)}.elevation-2{box-shadow:var(--shadow-md)}.elevation-3{box-shadow:var(--shadow-lg)}@keyframes celebrate-bounce{0%,to{transform:translateY(0)scale(1)}25%{transform:translateY(-10px)scale(1.05)}50%{transform:translateY(-5px)scale(1.02)}}@keyframes celebrate-pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.8;transform:scale(1.1)}}@keyframes star-pop{0%{opacity:0;transform:scale(0)rotate(-30deg)}50%{opacity:1;transform:scale(1.3)rotate(10deg)}to{opacity:1;transform:scale(1)rotate(0)}}@keyframes confetti-fall{0%{opacity:1;transform:translateY(-100%)rotate(0)}to{opacity:0;transform:translateY(100vh)rotate(720deg)}}.celebrate-bounce{animation:celebrate-bounce .6s var(--spring)}.celebrate-pulse{animation:celebrate-pulse .4s var(--ease-out)}.star-pop{animation:star-pop .5s var(--spring) forwards}.completion-overlay{z-index:1000;animation:fadeIn .3s var(--ease-out);background:#0009;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.completion-modal{background:var(--card-bg);border-radius:var(--radius-xl);padding:var(--space-2xl);text-align:center;animation:scaleIn .4s var(--spring);width:320px;max-width:90%}h1,h2,h3{font-family:var(--font-display)}h1{font-weight:700}h2,h3{font-weight:600}.map-node-3d-container{background-color:var(--node-shadow-color,#d97706);cursor:pointer;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;border-radius:50%;flex-direction:column;justify-content:flex-start;width:64px;height:64px;padding-bottom:6px;transition:all .1s cubic-bezier(.175,.885,.32,1.275);display:flex;position:relative;box-shadow:0 4px 10px #0003}.map-node-3d-container:active:not(.locked){padding-bottom:0;transform:translateY(6px);box-shadow:0 0 4px #0003}.map-node-3d-face{background-color:var(--node-main-color,#fbbf24);z-index:2;color:#fff;text-shadow:0 2px #0000001a;border:4px solid #ffffff40;border-radius:50%;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:relative}.map-node-3d-container.locked{box-shadow:none;cursor:not-allowed;background-color:#d1d5db;padding-bottom:0;transform:none!important}.map-node-3d-container.locked .map-node-3d-face{color:#9ca3af;text-shadow:none;background-color:#e5e7eb;border-color:#d1d5db}.map-node-3d-face .completed-badge{background:#fbbf24;border:2px solid #fff;border-radius:50%;justify-content:center;align-items:center;width:20px;height:20px;display:flex;position:absolute;bottom:-2px;right:-2px;box-shadow:0 2px 4px #0000001a}.character-avatar-container{pointer-events:none;z-index:30;justify-content:center;align-items:center;width:70px;height:70px;display:flex;position:absolute;top:-72px;left:50%;transform:translate(-50%)}.character-avatar-inner{filter:drop-shadow(0 4px 6px #0000004d);font-size:48px;animation:2s ease-in-out infinite character-bounce}@keyframes character-bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.stars-container-external{z-index:25;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0009;border-radius:12px;gap:3px;padding:2px 6px;display:flex;position:absolute;bottom:-24px;left:50%;transform:translate(-50%)}.map-node-3d-face .node-glow{opacity:.5;background:0 0;border:2px solid #fff}body{line-height:1.6}button,input,select,textarea{font-family:inherit}button,input,select,textarea,a{-webkit-tap-highlight-color:transparent}button,select{touch-action:manipulation}.btn{min-height:44px;line-height:1.5}.btn-secondary{background:var(--background-elevated);color:var(--primary);border:1px solid var(--card-border)}.btn-text{color:var(--primary);background:0 0}.icon-button{min-width:44px;min-height:44px;color:var(--primary);background:0 0;border:0;border-radius:10px;place-items:center;display:inline-grid}.nav-item.active{background:var(--primary-soft);box-shadow:inset 0 2px var(--primary);border-radius:10px;font-weight:700}.site-header nav a{align-items:center;min-height:44px;display:inline-flex}.auth-container{min-height:65vh;padding-block:48px}.auth-card{box-shadow:none;border-radius:16px}.auth-card h1{font-size:30px}.card.hover-card:hover,.story-card:hover,.hover-card:hover{box-shadow:none;transform:none}:focus-visible{outline:3px solid var(--primary);outline-offset:3px}@media (max-width:820px){.site-main{padding-bottom:calc(88px + env(safe-area-inset-bottom))}.site-footer{padding-bottom:calc(100px + env(safe-area-inset-bottom))}}@media (max-width:430px){.auth-card{padding:24px}}.sparkle-effect,.node-glow{display:none}.map-node-btn.unlocked,.character-avatar-inner,.celebrate-bounce,.celebrate-pulse,.star-pop{animation:none}.map-node-btn.unlocked,.map-node-btn.completed{box-shadow:none}.pinyin-stream-title{-webkit-text-fill-color:currentColor;color:var(--primary);background:0 0}.input,.form-group input{border-color:var(--text-tertiary)}.auth-button{color:var(--background)}.saved-page{width:min(800px,100% - 36px);margin:0 auto;padding:32px 0 64px}.saved-page>header{flex-wrap:wrap;gap:16px}.saved-row{border-bottom:1px solid var(--card-border);overflow-wrap:anywhere;padding:20px 0;display:block}.saved-row:hover{border-color:var(--primary)}.saved-row p{margin-top:8px}.success-message{color:var(--success);background:var(--success-soft);border:1px solid var(--success);border-radius:12px;margin-bottom:16px;padding:12px 16px;line-height:1.6}.site-header nav a,.site-footer nav a{align-items:center;min-height:44px;display:inline-flex}.site-footer nav a:hover{color:var(--primary);text-underline-offset:4px;text-decoration:underline}.btn{min-height:48px}.input:focus-visible,.form-group input:focus-visible{outline:2px solid var(--primary);outline-offset:3px;box-shadow:none}