:root{--primary:#4361ee;--primary-dark:#3a0ca3;--primary-darker:#312e81;--secondary:#7209b7;--accent:#6366f1;--accent-2:#8b5cf6;--light-accent:#eef2ff;--success:#10b981;--warning:#f59e0b;--danger:#ef4444;--info:#3b82f6;--dark:#0f172a;--gray:#64748b;--light:#f8fafc;--border:#e2e8f0;--bg-gradient:linear-gradient(160deg,#f0f4ff 0%,#e8eeff 40%,#f5f0ff 100%);--bg-card:#ffffff;--text-primary:#1e293b;--text-secondary:#475569;--text-muted:#94a3b8;--shadow:0 4px 24px rgba(0,0,0,0.08);--primary-light:rgba(0,0,0,0.06)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:"Inter",system-ui,-apple-system,sans-serif;background:var(--bg-gradient);color:var(--text-primary);line-height:1.75;overflow-x:hidden;scroll-behavior:smooth}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3}.container{max-width:1200px;margin:0 auto;padding:0 20px}.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-gradient);clip-path:ellipse(55% 100% at 50% 100%)}.hero-section::before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 20% 30%, rgba(167, 139, 250, 0.18) 0%, transparent 50%),radial-gradient(circle at 80% 70%, rgba(99, 102, 241, 0.15) 0%, transparent 50%);pointer-events:none}.hero-title{font-size:clamp(1.8rem,4vw,3rem);font-weight:900;margin-bottom:1rem;position:relative;z-index:1;line-height:1.2}.hero-desc{font-size:1.05rem;opacity:.92;max-width:620px;position:relative;z-index:1}.hero-stats{display:flex;gap:36px;margin-top:1.5rem;position:relative;z-index:1}.hero-stat{text-align:center}.hero-stat-num{font-size:1.8rem;font-weight:900;color:#fff}.hero-stat-label{font-size:.8rem;opacity:.7;margin-top:2px}.breadcrumb{font-size:.85rem;margin-bottom:14px;opacity:.85;position:relative;z-index:1}.breadcrumb a{color:hsla(0,0%,100%,.8);text-decoration:none}.tool-wrapper{margin-top:-30px;position:relative;z-index:10;padding-bottom:2rem}.tool-card{background:var(--bg-card);border-radius:20px;overflow:hidden;box-shadow:0 4px 24px rgba(67,97,238,.08);border:1px solid rgba(67,97,238,.06)}.editor-section{padding:2rem}.steps-bar{display:flex;justify-content:center;align-items:center;gap:10px;padding:1.25rem;background:var(--light);border-bottom:1px solid var(--border)}.step-item{display:flex;align-items:center;gap:8px;padding:.6rem 1.2rem;border-radius:30px;font-weight:600;font-size:.9rem;color:var(--gray);transition:all .25s}.step-item.active{background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff;box-shadow:0 4px 15px rgba(67,97,238,.3)}.step-num-circle{width:30px;height:30px;border-radius:50%;background:currentColor;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.8rem}.step-divider{width:36px;height:2px;background:var(--border)}.content-textarea{width:100%;min-height:260px;padding:1.15rem;border:2px solid var(--border);border-radius:12px;font-size:1rem;font-family:"Inter",sans-serif;line-height:1.7;resize:vertical;transition:all .25s;background:var(--bg-card)}.content-textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(67,97,238,.1);background:var(--bg-card)}.char-counter{display:flex;justify-content:space-between;margin-top:.5rem;font-size:.85rem;color:var(--gray)}.char-count-num{font-weight:700;color:var(--primary)}.quick-templates{display:grid;grid-template-columns:repeat(auto-fit, minmax(200px, 1fr));gap:12px;margin-top:1.25rem}.template-btn{background:var(--light);border:2px solid var(--border);border-radius:12px;padding:1rem;cursor:pointer;transition:all .25s;text-align:center;font-family:inherit}.template-btn:hover{transform:translateY(-3px);border-color:var(--primary);box-shadow:0 6px 20px rgba(67,97,238,.1)}.template-btn .t-icon{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff;display:flex;align-items:center;justify-content:center;margin:0 auto 10px;font-size:1.2rem}.template-btn h5{font-size:.92rem;font-weight:700;margin-bottom:2px}.template-btn p{font-size:.8rem;color:var(--gray);margin:0}.customize-panel{background:var(--light);border-radius:14px;padding:1.5rem;margin-top:1.5rem;border:1px solid var(--border)}.customize-grid{display:grid;grid-template-columns:repeat(auto-fit, minmax(260px, 1fr));gap:1rem}.customize-group{background:var(--bg-card);border-radius:10px;padding:1.15rem;border:1px solid var(--border)}.customize-group h5{font-size:.9rem;font-weight:700;margin-bottom:.8rem;display:flex;align-items:center;gap:6px}.color-row{display:flex;align-items:center;gap:10px;margin-bottom:.5rem}.color-label{font-weight:600;font-size:.85rem;min-width:80px;color:var(--gray)}.color-picker{width:40px;height:40px;border:none;border-radius:8px;cursor:pointer;box-shadow:0 2px 6px rgba(0,0,0,.12)}.color-hex{font-family:monospace;font-weight:600;font-size:.85rem;color:var(--text-primary);background:var(--light);padding:.3rem .6rem;border-radius:6px}.form-select,.form-control{border:2px solid var(--border);border-radius:8px;padding:.55rem .9rem;font-size:.9rem;transition:all .25s;font-family:inherit;width:100%}.form-select:focus,.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(67,97,238,.1);outline:none}.preview-box{background:var(--bg-card);border:2px dashed var(--border);border-radius:12px;min-height:320px;display:flex;align-items:center;justify-content:center;margin-top:1.25rem;overflow:hidden}.preview-placeholder{text-align:center;color:var(--gray);padding:1.5rem}.preview-placeholder i{font-size:3rem;margin-bottom:10px;display:block}.preview-placeholder h5{font-size:1.05rem;margin-bottom:4px}.preview-placeholder p{font-size:.85rem;margin:0}.actions-grid{display:grid;grid-template-columns:repeat(auto-fit, minmax(160px, 1fr));gap:10px;margin-top:1.25rem}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border:none;border-radius:10px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s;font-family:inherit;justify-content:center;text-decoration:none}.btn-primary{background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 18px rgba(67,97,238,.3)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-success{background:linear-gradient(135deg, #10b981, #059669);color:#fff}.btn-success:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 18px rgba(16,185,129,.3)}.btn-success:disabled{opacity:.5;cursor:not-allowed}.btn-warning{background:linear-gradient(135deg, #f59e0b, #d97706);color:#fff}.btn-warning:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(245,158,11,.3)}.btn-danger{background:linear-gradient(135deg, #ef4444, #dc2626);color:#fff}.btn-danger:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(239,68,68,.3)}.btn-outline{background:rgba(0,0,0,0);color:var(--primary);border:2px solid var(--border);padding:8px 16px}.btn-outline:hover{border-color:var(--primary);background:var(--light-accent)}.content-section{padding:50px 0}.content-card{background:var(--bg-card);border-radius:20px;padding:40px;margin-bottom:32px;box-shadow:0 4px 24px rgba(67,97,238,.08);border:1px solid rgba(67,97,238,.06)}.content-card h2{font-size:1.4rem;margin-bottom:16px;color:var(--text-primary)}.content-card h3{font-size:1.15rem;margin-bottom:12px;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}.case-grid{display:grid;grid-template-columns:repeat(auto-fill, minmax(300px, 1fr));gap:18px;margin-top:20px}.case-card{background:var(--light);border-radius:14px;padding:22px;border:1px solid var(--border);transition:all .25s}.case-card:hover{transform:translateY(-3px);box-shadow:0 8px 20px rgba(67,97,238,.1);border-color:var(--primary)}.case-number{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.95rem;margin-bottom:12px}.case-card h3{font-size:1rem;margin-bottom:8px;color:var(--text-primary)}.case-card .case-detail{font-size:.88rem;color:var(--gray);margin-bottom:4px;line-height:1.6}.usage-guide .step{display:flex;gap:18px;margin-bottom:24px;align-items:flex-start}.usage-guide .step:last-child{margin-bottom:0}.usage-guide .step-num{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.1rem;flex-shrink:0}.usage-guide .step-content h3{font-size:1.05rem;margin-bottom:4px}.usage-guide .step-content p{font-size:.92rem;color:var(--gray);margin:0;line-height:1.65}.faq-section .faq-item{border:1px solid var(--border);border-radius:12px;margin-bottom:10px;overflow:hidden}.faq-section .faq-q{width:100%;padding:1.1rem 1.3rem;font-weight:600;font-size:.95rem;background:var(--bg-card);border:none;display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer;transition:background .2s;font-family:inherit;text-align:left}.faq-section .faq-q:hover{background:var(--light)}.faq-section .faq-q i{transition:transform .3s;color:var(--primary);flex-shrink:0}.faq-section .faq-q.active i{transform:rotate(180deg)}.faq-section .faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}.faq-section .faq-a.open{max-height:320px}.faq-section .faq-a-inner{padding:0 1.3rem 1.15rem;color:var(--text-secondary);font-size:.9rem;line-height:1.7}.related-cards{display:grid;grid-template-columns:repeat(5, 1fr);gap:18px;margin-top:24px}@media(max-width: 991px){.related-cards{grid-template-columns:repeat(3, 1fr)}}@media(max-width: 575px){.related-cards{grid-template-columns:repeat(2, 1fr)}}.related-card{background:var(--bg-card);border:2px solid var(--border);border-radius:14px;padding:24px 18px;text-align:center;transition:all .3s;display:block;color:var(--text-primary);text-decoration:none;position:relative;overflow:hidden}.related-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg, var(--primary), var(--secondary));transform:scaleX(0);transition:transform .4s ease;transform-origin:left}.related-card:hover{border-color:var(--primary);transform:translateY(-6px);box-shadow:0 12px 28px rgba(67,97,238,.15);color:var(--text-primary)}.related-card:hover::before{transform:scaleX(1)}.related-card-icon{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff;display:flex;align-items:center;justify-content:center;margin:0 auto 12px;font-size:1.3rem;transition:transform .3s}.related-card:hover .related-card-icon{transform:rotate(10deg) scale(1.1)}.related-card-name{font-weight:700;font-size:.98rem;margin-bottom:4px}.related-card-desc{font-size:.82rem;color:var(--gray);line-height:1.5}.privacy-note{background:var(--primary-light) !important;border:1px solid rgba(67,97,238,.1) !important}.privacy-note h3{font-size:1.05rem;margin-bottom:8px}.privacy-note p{font-size:.9rem;color:var(--text-secondary);margin:0}.load-overlay{position:fixed;inset:0;background:var(--bg-card);backdrop-filter:blur(8px);display:none;align-items:center;justify-content:center;z-index:9999;flex-direction:column;gap:1rem}.load-overlay.active{display:flex}.load-spinner{width:48px;height:48px;border:4px solid #e2e8f0;border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.load-overlay p{color:var(--gray);font-weight:500;font-size:.95rem}.toast-msg{position:fixed;top:20px;right:20px;z-index:9999;max-width:360px;padding:.9rem 1.15rem;border-radius:12px;background:var(--bg-card);box-shadow:0 8px 30px rgba(0,0,0,.12);border-left:4px solid var(--primary);display:flex;align-items:center;gap:10px;font-size:.88rem;animation:slideIn .3s ease;font-weight:500}.toast-msg.success{border-left-color:var(--success)}.toast-msg.danger{border-left-color:var(--danger)}.toast-msg.warning{border-left-color:var(--warning)}.toast-msg.info{border-left-color:var(--info)}@keyframes slideIn{from{opacity:0;transform:translateX(40px)}to{opacity:1;transform:translateX(0)}}.btt-btn{position:fixed;bottom:24px;right:24px;width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff;border:none;display:none;align-items:center;justify-content:center;font-size:1.05rem;cursor:pointer;z-index:900;box-shadow:0 4px 15px rgba(67,97,238,.4);transition:all .3s}.btt-btn.show{display:flex}.btt-btn:hover{transform:translateY(-3px);box-shadow:0 8px 25px rgba(67,97,238,.5)}@media(max-width: 768px){.hero-section{padding:100px 0 60px}.tool-card{padding:0}.content-card{padding:24px 18px}.case-grid{grid-template-columns:1fr}.hero-stats{gap:20px}.actions-grid{grid-template-columns:1fr}.editor-section{padding:1.25rem}}@media(max-width: 480px){.related-cards{grid-template-columns:1fr}.hero-stats{flex-direction:column;gap:10px}.steps-bar{flex-wrap:wrap;gap:6px}.step-divider{display:none}}#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);--dark:#f1f5f9;--gray:#94a3b8;--light:#1e293b;--bg-gradient:linear-gradient(160deg,#0f172a 0%,#1e293b 100%)}#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);--dark:#1a1a2e;--gray:#6c757d;--light:#f8f9fa;--bg-gradient:linear-gradient(160deg,#f0f4ff 0%,#e8ffe8 40%,#f5f0ff 100%)}#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}