:root{--bg-primary:#0f0f1a;--bg-secondary:#1a1a2e;--bg-card:#252542;--bg-input:#2d2d4a;--text-primary:#fff;--text-secondary:#a0a0c0;--text-muted:#6b6b8a;--border-color:#3a3a5c;--accent-primary:#6366f1;--accent-secondary:#8b5cf6;--accent-gradient:linear-gradient(135deg,#6366f1 0%,#8b5cf6 100%);--success:#10b981;--error:#ef4444;--warning:#f59e0b;--shadow:0 4px 20px #0006;--shadow-lg:0 8px 40px #00000080}[data-theme=light]{--bg-primary:#f8f9fc;--bg-secondary:#fff;--bg-card:#fff;--bg-input:#f1f5f9;--text-primary:#1e293b;--text-secondary:#64748b;--text-muted:#94a3b8;--border-color:#e2e8f0;--accent-primary:#6366f1;--accent-secondary:#8b5cf6;--shadow:0 4px 20px #00000014;--shadow-lg:0 8px 40px #0000001f}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-primary);color:var(--text-primary);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica 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p{color:var(--text-muted);font-size:.85rem;line-height:1.5}@media (max-width:600px){.form-grid{grid-template-columns:1fr}}.form-group{flex-direction:column;gap:.5rem;display:flex}.form-group label{color:var(--text-secondary);font-size:.875rem;font-weight:500}.field-hint{color:var(--text-muted);font-size:.8rem;line-height:1.4}.form-group input,.form-group select,.form-group textarea{background:var(--bg-input);border:1px solid var(--border-color);color:var(--text-primary);border-radius:8px;width:100%;padding:.75rem 1rem;font-size:.95rem;transition:all .2s}.form-group select{appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a0a0c0' d='M6 9L1 4h10z'/%3E%3C/svg%3E");background-position:right 1rem center;background-repeat:no-repeat;background-size:12px;padding-right:2.5rem}[data-theme=light] .form-group select{background-image:url("data:image/svg+xml,%3Csvg 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var(--border-color);border-radius:12px;padding:1.25rem}.preview-cover{aspect-ratio:16/9;object-fit:cover;border-radius:8px;width:100%;margin-bottom:1rem}.preview-title{margin-bottom:.5rem;font-size:1.25rem;font-weight:600;line-height:1.4}.preview-cover-text{color:var(--text-secondary);margin-bottom:.75rem;font-size:.95rem}.preview-tags{flex-wrap:wrap;gap:.5rem;margin-bottom:1rem;display:flex}.tag{background:var(--accent-gradient);color:#fff;border-radius:20px;padding:.25rem .75rem;font-size:.8rem;font-weight:500}.preview-content{color:var(--text-secondary);font-size:.95rem;line-height:1.7}.preview-content h1,.preview-content h2,.preview-content h3,.preview-content h4{color:var(--text-primary);margin:1rem 0 .5rem}.preview-content p{margin-bottom:.75rem}.preview-content ul{margin-bottom:.75rem;padding-left:1.5rem}.preview-content li{margin-bottom:.5rem}.history-panel{background:var(--bg-card);border:1px solid 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.2s;display:flex}.history-item:hover{background:var(--border-color)}.history-info{flex:1;min-width:0}.history-title{white-space:nowrap;text-overflow:ellipsis;font-size:.95rem;font-weight:500;overflow:hidden}.history-meta{align-items:center;gap:.75rem;margin-top:.25rem;display:flex}.history-date{color:var(--text-muted);font-size:.8rem}.published-badge{background:var(--success);color:#fff;border-radius:10px;padding:.125rem .5rem;font-size:.7rem}.history-buttons{gap:.5rem;display:flex}.modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;background:#0009;justify-content:center;align-items:center;padding:1rem;display:flex;position:fixed;inset:0}.modal-content{background:var(--bg-card);box-shadow:var(--shadow-lg);border:1px solid var(--border-color);border-radius:16px;flex-direction:column;width:100%;max-width:700px;max-height:90vh;display:flex;overflow:hidden}.modal-header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:1.25rem 1.5rem;display:flex}.image-item .btn-select{background:var(--accent-gradient);color:#fff;border:none;border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:1.25rem 1.5rem;font-weight:600;display:flex;position:absolute;bottom:0;left:0;right:0}.modal-header h3{font-size:1.25rem;font-weight:600}.modal-body{flex:1;padding:1.5rem;overflow-y:auto}.modal-actions{justify-content:space-between;gap:1rem;margin-top:1.5rem;display:flex}.smart-cover-modal{max-width:800px}.steps-indicator{border-bottom:1px solid var(--border-color);gap:1rem;margin-bottom:1.5rem;padding-bottom:1rem;display:flex}.step{text-align:center;background:var(--bg-input);color:var(--text-muted);border-radius:8px;flex:1;padding:.75rem;font-size:.9rem;font-weight:500;transition:all 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floatBubble{0%{transform:translate(0)scale(1)}to{transform:translate(50px,50px)scale(1.1)}}.login-card{z-index:10;background:color-mix(in srgb,var(--bg-card)75%,transparent 25%);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border-color);width:100%;max-width:440px;box-shadow:var(--shadow-lg);text-align:center;border-radius:20px;flex-direction:column;align-items:center;padding:2.5rem;animation:.6s cubic-bezier(.16,1,.3,1) cardFadeIn;display:flex;position:relative}@keyframes cardFadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.login-header{margin-bottom:2rem}.app-logo{margin-bottom:1rem;animation:2s ease-in-out infinite logoPulse;display:inline-flex}@keyframes logoPulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.login-header h2{background:var(--accent-gradient);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:.5rem;font-size:1.6rem;font-weight:700}.login-subtitle{color:var(--text-secondary);font-size:.95rem}.login-error-alert{text-align:left;background:#ef44441a;border:1px solid #ef444433;border-radius:8px;align-items:center;gap:.75rem;width:100%;margin-bottom:1.5rem;padding:.75rem 1rem;display:flex}.error-icon{font-size:1.1rem}.error-text{color:var(--error);font-size:.85rem;line-height:1.4}.qrcode-wrapper{border:1px solid var(--border-color);background:#fff;border-radius:12px;justify-content:center;align-items:center;width:100%;margin-bottom:1.5rem;padding:1rem;display:flex;box-shadow:inset 0 2px 8px #0000000d}.feishu-qrcode-container{justify-content:center;align-items:center;width:320px;height:320px;display:flex}.qrcode-loading{color:var(--text-muted);flex-direction:column;align-items:center;gap:1rem;font-size:.9rem;display:flex}[data-theme=light] .qrcode-loading{color:#64748b}.qrcode-loading .spinner{border:3px solid #6366f133;border-top-color:var(--accent-primary);width:30px;height:30px}.login-footer{color:var(--text-muted);margin-top:1rem;font-size:.8rem}.loading-screen{background:var(--bg-primary);min-height:100vh;color:var(--text-secondary);flex-direction:column;justify-content:center;align-items:center;gap:1.25rem;display:flex}.loading-screen .spinner{border:3px solid #6366f133;border-top-color:var(--accent-primary);width:36px;height:36px}.user-profile{background:var(--bg-card);border:1px solid var(--border-color);border-radius:30px;align-items:center;gap:.75rem;padding:.35rem .75rem;transition:all .2s;display:flex}.user-avatar{object-fit:cover;border:1px solid var(--border-color);border-radius:50%;width:28px;height:28px}.user-avatar-placeholder{background:var(--accent-gradient);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:28px;height:28px;font-size:.85rem;font-weight:600;display:flex}.user-name{color:var(--text-primary);font-size:.9rem;font-weight:500}.btn-logout{color:var(--text-muted);cursor:pointer;border:none;border-left:1px solid var(--border-color);background:0 0;border-radius:4px;align-items:center;gap:.25rem;margin-left:.5rem;padding:.2rem .4rem .2rem .75rem;font-size:.8rem;transition:all .2s;display:flex}.btn-logout:hover{color:var(--error)}.header-logo{align-items:center;gap:.75rem;display:flex}