:root{--primary:#4361ee;--primary-dark:#3a0ca3;--secondary:#7209b7;--radius:8px;--radius-xl:20px;--success:#06d6a0;--danger:#e63946;--warning:#f8961e}#app-content[data-theme=dark]{--bg-body:#0f172a;--bg-card:#1e293b;--text-primary:#f1f5f9;--text-secondary:#94a3b8;--text-muted:#64748b;--border:#334155;--shadow:0 4px 24px rgba(0,0,0,0.3);--primary-light:rgba(67,97,238,0.12)}#app-content[data-theme=light]{--bg-body:#f8fafc;--bg-card:#ffffff;--text-primary:#1e293b;--text-secondary:#475569;--text-muted:#94a3b8;--border:#e2e8f0;--shadow:0 4px 24px rgba(67,97,238,0.08);--primary-light:rgba(67,97,238,0.08)}.hero-section{padding:120px 0 80px;background:linear-gradient(135deg, #4361ee 0%, #3a0ca3 50%, #7209b7 100%);color:#fff;position:relative;overflow:hidden}.hero-section::after{content:"";position:absolute;bottom:-2px;left:0;right:0;height:60px;background:var(--bg-body);clip-path:ellipse(55% 100% at 50% 100%)}.hero-title{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;margin-bottom:12px}.hero-desc{font-size:1.05rem;opacity:.9;max-width:560px}.tool-wrapper{margin-top:-30px;position:relative;z-index:10;padding-bottom:2rem}.tool-card{background:var(--bg-card);border-radius:var(--radius-xl);padding:2rem;box-shadow:var(--shadow);border:1px solid var(--border)}.upload-zone{border:2.5px dashed var(--primary);border-radius:16px;padding:2.5rem 1.5rem;text-align:center;background:var(--primary-light);cursor:pointer;transition:all .3s}.upload-zone:hover{border-color:var(--primary);background:rgba(67,97,238,.15)}.upload-zone.dragover{border-color:var(--success);background:rgba(52,211,153,.1)}.content-card{background:var(--bg-card);border-radius:var(--radius-xl);padding:40px;margin-bottom:28px;box-shadow:var(--shadow);border:1px solid var(--border)}.content-card h2{font-size:1.4rem;margin-bottom:16px;color:var(--text-primary)}.content-card p{color:var(--text-secondary);margin-bottom:14px;line-height:1.8}.content-card ul{color:var(--text-secondary);margin-bottom:14px;padding-left:20px}.content-card ul li{margin-bottom:6px}.editor-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:2rem}@media(max-width: 992px){.editor-grid{grid-template-columns:1fr}}.code-container{background:#1a1b26;border-radius:20px;overflow:hidden;box-shadow:0 20px 40px rgba(0,0,0,.3);border:1px solid hsla(0,0%,100%,.1)}.editor-header{background:#24283b;padding:1rem 1.5rem;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid hsla(0,0%,100%,.05)}.code-editor{width:100%;height:500px;padding:1.5rem;background:rgba(0,0,0,0);color:#a9b1d6;font-family:"Fira Code",monospace;font-size:14px;border:none;resize:none;outline:none}.preview-box{background:var(--dark-bg);border-radius:20px;border:1px solid var(--border);display:flex;flex-direction:column;height:560px}.preview-content{flex-grow:1;overflow-y:auto;padding:2rem;background:var(--bg-body)}.control-panel{background:var(--bg-card);border-radius:var(--radius-xl);padding:2rem;border:1px solid var(--border);margin-top:2rem}.control-panel h3{font-size:1.5rem;margin-bottom:1.5rem;display:flex;align-items:center;gap:10px;color:var(--text-primary)}.control-grid{display:grid;grid-template-columns:repeat(auto-fill, minmax(200px, 1fr));gap:1rem;margin-bottom:1.5rem}.control-group{background:var(--primary-light);padding:1.2rem;border-radius:15px;border:1px solid var(--border)}.control-group label{display:flex;align-items:center;gap:8px;font-weight:600;margin-bottom:8px;color:var(--text-primary);font-size:.9rem}.control-group select,.control-group input{width:100%;background:var(--bg-body);color:var(--text-primary);border:1px solid var(--border);border-radius:8px;padding:8px 12px;font-size:.9rem}.control-group select:focus,.control-group input:focus{outline:none;border-color:var(--primary)}.control-group input[type=range]{padding:0}.control-group .range-value{color:var(--primary);font-weight:700}.checkbox-group{display:flex;align-items:center;gap:8px;padding:8px 0}.checkbox-group input[type=checkbox]{width:18px;height:18px;accent-color:var(--primary)}.checkbox-group label{color:var(--text-secondary);font-size:.9rem;margin:0}.action-buttons{display:flex;flex-wrap:wrap;gap:12px;margin-top:1.5rem}.btn{display:inline-flex;align-items:center;gap:8px;padding:1rem 2rem;border-radius:12px;font-weight:700;font-size:.95rem;border:none;cursor:pointer;transition:all .3s;text-decoration:none}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 20px rgba(99,102,241,.3)}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-3px);box-shadow:0 15px 30px rgba(99,102,241,.4)}.btn-secondary{background:var(--primary-light);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{border-color:var(--primary);transform:translateY(-2px)}.btn-accent{background:linear-gradient(135deg, #06d6a0 0%, #38f9d7 100%);color:#0f172a;box-shadow:0 10px 20px rgba(6,214,160,.3)}.btn-accent:hover{transform:translateY(-3px);box-shadow:0 15px 30px rgba(6,214,160,.4)}.loading-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(15,23,42,.9);display:none;align-items:center;justify-content:center;flex-direction:column;z-index:9999;backdrop-filter:blur(8px)}.loading-spinner{width:60px;height:60px;border:4px solid hsla(0,0%,100%,.1);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;margin-bottom:1.5rem}@keyframes spin{to{transform:rotate(360deg)}}.notification{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);padding:16px 32px;border-radius:15px;color:#fff;font-weight:600;z-index:10001;box-shadow:0 20px 40px rgba(0,0,0,.3);font-size:1rem;max-width:90vw;text-align:center;display:none}.trust-bar{display:flex;justify-content:center;gap:2rem;padding:1.5rem 0;flex-wrap:wrap}.trust-item{display:flex;align-items:center;gap:8px;color:var(--text-secondary);font-size:.85rem}.trust-item i{color:var(--primary);font-size:1rem}.related-tools{padding:40px 0}.related-tools h2{font-size:1.8rem;margin-bottom:10px}.related-tools>p{color:var(--text-secondary);margin-bottom:30px}.related-grid{display:grid;grid-template-columns:repeat(auto-fill, minmax(200px, 1fr));gap:16px}.related-card{background:var(--bg-card);border:1px solid var(--border);padding:20px;border-radius:12px;text-align:center;text-decoration:none;color:var(--text-primary);transition:all .3s;display:flex;flex-direction:column;align-items:center;gap:10px}.related-card:hover{background:var(--primary-light);border-color:var(--primary);transform:translateY(-4px)}.related-name{font-weight:700;font-size:.9rem}.related-desc{font-size:.78rem;color:var(--text-secondary)}.faq-section{padding:0}.faq-list{margin-top:20px}.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-xl);margin-bottom:12px;overflow:hidden}.faq-item.open .faq-question i{transform:rotate(180deg)}.faq-item.open .faq-answer{max-height:300px;padding:0 25px 20px;display:block}.faq-question{padding:20px 25px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:var(--text-primary);background:none;border:none;width:100%;text-align:left;font-size:1rem}.faq-question i{transition:transform .3s;color:var(--primary)}.faq-answer{padding:0 25px;max-height:0;overflow:hidden;transition:all .4s;color:var(--text-secondary);display:none}.case-studies .case-grid{display:grid;grid-template-columns:repeat(auto-fill, minmax(250px, 1fr));gap:16px;margin-top:20px}.case-card{background:var(--primary-light);border:1px solid var(--border);border-radius:15px;padding:1.5rem;transition:all .3s}.case-card:hover{transform:translateY(-4px);border-color:var(--primary)}.case-card h3{font-size:1rem;margin-bottom:8px;color:var(--text-primary)}.case-number{background:var(--primary);color:#fff;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem;margin-bottom:12px}.case-detail{font-size:.85rem;color:var(--text-secondary);margin-bottom:4px;line-height:1.5}.usage-guide h2{font-size:1.6rem;margin-bottom:1.5rem}.step{display:flex;gap:16px;margin-bottom:20px;align-items:flex-start}.step-num{background:var(--primary);color:#fff;width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}.step-content h3{font-size:1rem;margin-bottom:4px}.step-content p{color:var(--text-secondary);font-size:.9rem;margin:0}.privacy-note h3{font-size:1.1rem;margin-bottom:8px}.privacy-note p{color:var(--text-secondary);margin-bottom:0;font-size:.92rem}#floatThemeToggle{position:fixed;top:100px;right:20px;width:48px;height:48px;background:var(--bg-card);border:1px solid var(--border);border-radius:50%;cursor:pointer;z-index:1000;display:flex;align-items:center;justify-content:center;color:var(--text-primary);font-size:1.2rem;box-shadow:var(--shadow);transition:all .3s}#floatThemeToggle:hover{background:var(--primary);color:#fff;border-color:var(--primary)}#backToTop{position:fixed;bottom:30px;right:20px;width:48px;height:48px;background:var(--primary);border:none;border-radius:50%;cursor:pointer;z-index:1000;display:none;align-items:center;justify-content:center;color:#fff;font-size:1.2rem;box-shadow:0 10px 20px rgba(0,0,0,.2);transition:all .3s}#backToTop:hover{background:var(--primary-dark);transform:translateY(-3px)}#backToTop.show{display:flex}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg-body)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}@media(max-width: 768px){.hero-section{padding:100px 20px 60px}.hero-title{font-size:1.8rem}.tool-card{padding:1.2rem}.content-card{padding:1.5rem}.related-grid{grid-template-columns:repeat(2, 1fr)}.control-grid{grid-template-columns:1fr}}@media(max-width: 480px){.hero-section{padding:90px 16px 50px}.hero-title{font-size:1.6rem}.hero-desc{font-size:.95rem}.tool-card{padding:1rem}.upload-zone{padding:2rem 1rem}.content-card{padding:1.25rem;border-radius:16px}.editor-grid{grid-template-columns:1fr;gap:1rem}.code-editor{height:380px;font-size:12px}.preview-box{height:440px}.control-panel{padding:1.25rem}.control-grid{grid-template-columns:1fr}.action-buttons{flex-direction:column;align-items:stretch}.btn{width:100%;justify-content:center}.related-grid{grid-template-columns:1fr}.faq-question{padding:16px 18px;font-size:.95rem}.faq-answer{padding:0 18px}.faq-item.open .faq-answer{padding:0 18px 18px}.step{gap:12px}#floatThemeToggle,#backToTop{width:42px;height:42px;right:14px;font-size:1rem}#floatThemeToggle{top:80px}.notification{padding:14px 20px;font-size:.9rem;bottom:20px}}@media(prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}}