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8px;font-size:12px}.word-action-btn:hover{background:var(--primary-light);color:var(--primary)}.word-action-btn.danger:hover{background:var(--danger-light);color:var(--danger)}.word-definition{color:var(--text);margin-top:3px}.word-example{align-items:flex-start;gap:6px;margin-top:4px;display:flex}.word-example-text{color:var(--text-secondary);flex:1;font-size:12px;font-style:italic}.word-empty{text-align:center;color:var(--text-muted);padding:40px 20px;font-size:13px}.word-loading{text-align:center;color:var(--text-muted);padding:20px;font-size:13px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}@keyframes bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.debug-tabs{border-bottom:2px solid var(--border);gap:4px;margin-bottom:24px;padding-bottom:0;display:flex}.debug-tabs button{color:var(--text-secondary);cursor:pointer;transition:all var(--transition);background:0 0;border:none;border-bottom:2px solid #0000;margin-bottom:-2px;padding:8px 18px;font-size:14px;font-weight:600}.debug-tabs button:hover{color:var(--primary)}.debug-tabs button.active{color:var(--primary);border-bottom-color:var(--primary)}.stat-card-icon{margin-bottom:4px;font-size:20px}.stat-sub{color:var(--text-muted);margin-top:2px;font-size:12px}.debug-info-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px;display:grid}.debug-info-item{background:var(--bg-soft);border-radius:var(--radius-sm);flex-direction:column;gap:2px;padding:12px 14px;display:flex}.debug-info-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;font-size:11px;font-weight:600}.debug-info-value{color:var(--text);word-break:break-all;font-size:14px;font-weight:500}.text-success{color:var(--success)!important}.text-danger{color:var(--danger)!important}.debug-browser{gap:16px;height:calc(100vh - 200px);display:flex}.debug-conv-list{background:var(--bg-white);border-radius:var(--radius-lg);width:320px;box-shadow:var(--shadow-md);flex-direction:column;display:flex;overflow:hidden}.debug-conv-list-header{border-bottom:1px solid var(--border-light);justify-content:space-between;align-items:center;padding:14px 16px;font-size:14px;font-weight:700;display:flex}.debug-conv-list-header+div{flex:1;overflow-y:auto}.debug-conv-item{border-bottom:1px solid var(--border-light);cursor:pointer;transition:background var(--transition);padding:12px 16px}.debug-conv-item:hover{background:var(--bg-soft)}.debug-conv-item.active{background:var(--primary-light);border-left:3px solid var(--primary)}.debug-conv-title{color:var(--text);text-overflow:ellipsis;white-space:nowrap;margin-bottom:4px;font-size:13px;font-weight:600;overflow:hidden}.debug-conv-meta{color:var(--text-muted);align-items:center;gap:8px;font-size:11px;display:flex}.debug-conv-detail{background:var(--bg-white);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);flex:1;padding:16px;overflow-y:auto}.debug-msg{border-radius:var(--radius-sm);background:var(--bg-soft);margin-bottom:16px;padding:12px 14px}.debug-msg.user{border-left:3px solid var(--primary)}.debug-msg.assistant{border-left:3px solid var(--success)}.debug-msg-header{align-items:center;gap:10px;margin-bottom:6px;font-size:11px;display:flex}.debug-msg-role{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;font-weight:700}.debug-msg-time{color:var(--text-muted);font-size:10px}.debug-msg-content{color:var(--text);white-space:pre-wrap;word-break:break-word;font-size:13.5px;line-height:1.7}.debug-msg-content.error{color:var(--danger)}.debug-chat{background:var(--bg-white);border-radius:var(--radius-lg);height:calc(100vh - 200px);box-shadow:var(--shadow-md);flex-direction:column;display:flex;overflow:hidden}.debug-chat-toolbar{border-bottom:1px solid var(--border-light);justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.debug-lang-toggle{gap:8px;display:flex}.debug-lang-toggle .lang-btn{padding:5px 16px;font-size:13px}.debug-chat-messages{flex:1;padding:16px;overflow-y:auto}.debug-chat-msg{margin-bottom:20px;animation:.2s slideUp}.debug-chat-msg .debug-msg-header{margin-bottom:8px}.debug-msg-header.user .debug-msg-role{color:var(--primary)}.debug-msg-header.assistant .debug-msg-role{color:var(--success)}.debug-msg-elapsed{color:var(--text-muted);background:var(--bg-soft);border-radius:10px;padding:1px 8px;font-size:11px;font-weight:600}.debug-msg-conv-id{color:var(--text-muted);font-family:SF Mono,Fira Code,monospace;font-size:10px}.debug-chat-msg .debug-msg-content{border-radius:var(--radius-sm);background:var(--bg-soft);border:1px solid var(--border-light);padding:12px 14px}.debug-chat-msg .debug-msg-content.error{color:var(--danger)}.debug-tc-list{margin-top:12px}.debug-tc-list-header{color:var(--text-secondary);margin-bottom:10px;font-size:13px;font-weight:700}.debug-tc-card{background:var(--bg-soft);border-radius:var(--radius-sm);border:1px solid var(--border-light);border-left:3px solid var(--text-muted);margin-bottom:10px;overflow:hidden}.debug-tc-header{border-bottom:1px solid var(--border-light);background:var(--bg-white);justify-content:space-between;align-items:center;padding:8px 14px;display:flex}.debug-tc-name{font-family:SF Mono,Fira Code,monospace;font-size:13px;font-weight:700}.debug-tc-badge{border-radius:10px;padding:2px 10px;font-size:11px;font-weight:600}.debug-tc-badge.ok{background:var(--success-light);color:var(--success)}.debug-tc-badge.fail{background:var(--danger-light);color:var(--danger)}.debug-tc-body{grid-template-columns:1fr 1fr;gap:12px;padding:10px 14px;display:grid}.debug-tc-section{min-width:0}.debug-tc-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px;font-size:10px;font-weight:700}.debug-json{background:var(--bg-white);border:1px solid var(--border-light);white-space:pre-wrap;word-break:break-all;color:var(--text);border-radius:6px;max-height:300px;margin:0;padding:8px 10px;font-family:SF Mono,Fira Code,Consolas,monospace;font-size:12px;line-height:1.5;overflow:auto}[data-theme=dark] .debug-tc-header,[data-theme=dark] .debug-json{background:var(--bg)}@media (width<=1024px){.home-word-panel{width:45%}}@media (width<=768px){.sidebar{width:220px}.main{margin-left:220px;padding:20px}.io-grid{grid-template-columns:1fr}}@media (width<=600px){.sidebar{display:none}.main{margin-left:0;padding:16px 16px 96px}.mobile-hidden{display:none!important}.mobile-icp{bottom:calc(56px + env(safe-area-inset-bottom));text-align:center;z-index:99;font-size:10px;display:block;position:fixed;left:0;right:0}.mobile-icp a{color:var(--text-muted);text-decoration:none}.mobile-tts-row{justify-content:center;align-items:center;gap:8px;margin-bottom:12px;display:flex}.mobile-nav{background:var(--bg-white);border-top:1px solid var(--border);z-index:100;padding:8px 0 calc(8px + env(safe-area-inset-bottom));display:flex;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -2px 12px #0000000a}.mobile-nav a{color:var(--text-secondary);transition:color var(--transition);flex-direction:column;flex:1;align-items:center;gap:2px;font-size:11px;font-weight:500;text-decoration:none;display:flex}.mobile-nav a.active{color:var(--primary)}.mobile-nav a .icon{font-size:20px}.home-container{height:calc(100vh - 130px)}.mobile-tabs{border-radius:var(--radius-sm);border:1px solid var(--border);margin-bottom:12px;display:flex;overflow:hidden}.mobile-tabs button{background:var(--bg-white);cursor:pointer;color:var(--text-secondary);transition:all var(--transition);border:none;flex:1;padding:9px;font-size:13px;font-weight:500}.mobile-tabs button.active{background:var(--primary-gradient);color:#fff}.home-word-panel,.home-chat-panel{border-radius:var(--radius-lg);width:100%}.review-card{padding:28px 20px}.review-word{font-size:34px}.review-answer{padding:18px}.review-answer .definition{font-size:18px}.review-actions{flex-wrap:wrap}.review-actions .btn{flex:1;min-width:80px}.page-header h2{font-size:22px}.io-section{padding:18px}.pagination button{padding:8px 16px}.mobile-theme-toggle{display:flex}.debug-tabs button{padding:6px 12px;font-size:13px}.debug-browser{flex-direction:column;height:auto}.debug-conv-list{width:100%;max-height:280px}.debug-conv-detail{max-height:400px}.debug-tc-body{grid-template-columns:1fr}.debug-chat{height:calc(100vh - 180px)}.debug-info-grid{grid-template-columns:1fr}.io-grid{gap:12px}.io-section h3{align-items:center;gap:6px;font-size:16px;display:flex}.io-section .btn-group{flex-direction:column;gap:8px}.io-section .btn-group .btn{width:100%;padding:11px 16px;font-size:14px}.io-format-hint{padding:14px;font-size:12px;line-height:1.7}.result-banner{padding:12px 14px;font-size:13px}}.login-page{justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.login-card{background:var(--bg-card,#fff);border-radius:16px;width:100%;max-width:380px;padding:40px 32px;box-shadow:0 4px 24px #00000014}[data-theme=dark] .login-card{background:var(--bg-card,#1e1e2e);box-shadow:0 4px 24px #0000004d}.login-header{text-align:center;margin-bottom:32px}.login-logo{margin-bottom:8px;font-size:48px;display:block}.login-header h1{margin:0;font-size:24px}.login-form .form-group{margin-bottom:16px}.login-form input{border:1px solid var(--border-color,#e2e8f0);background:var(--bg-input,#fff);width:100%;color:var(--text-primary,#1a1a2e);box-sizing:border-box;border-radius:8px;outline:none;padding:12px 16px;font-size:15px;transition:border-color .2s}.login-form input:focus{border-color:#6366f1}.login-error{color:#ef4444;text-align:center;margin-bottom:16px;font-size:14px}.login-btn{color:#fff;cursor:pointer;background:#6366f1;border:none;border-radius:8px;width:100%;padding:12px;font-size:15px;font-weight:500;transition:background .2s}.login-btn:hover:not(:disabled){background:#5558e3}.login-btn:disabled{opacity:.6;cursor:not-allowed}.sidebar-user{background:var(--bg-hover,#0000000a);border-radius:8px;align-items:center;gap:8px;margin-bottom:8px;padding:8px 12px;font-size:13px;display:flex}[data-theme=dark] .sidebar-user{background:var(--bg-hover,#ffffff0f)}.user-avatar{font-size:16px}.logout-btn{border:1px solid var(--border-color,#e2e8f0);width:100%;color:var(--text-primary,#1a1a2e);cursor:pointer;background:0 0;border-radius:8px;margin-top:8px;padding:8px 12px;font-size:13px;transition:all .2s}.logout-btn:hover{color:#ef4444;border-color:#ef4444}