@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap";*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary:#f7f7f5;--bg-secondary:#fafafa;--bg-white:#fff;--text-primary:#1f1f1f;--text-secondary:#666;--text-muted:#8a8a8a;--accent:#ff6a3d;--accent-light:#ff6a3d14;--accent-hover:#ff6a3d1f;--border:#e5e5e5;--border-light:#0000000f;--sidebar-width:240px;--header-height:64px;--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--radius:10px;--radius-lg:16px}html,body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;font-size:15px;line-height:1.6}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-thumb{background:#d0d0d0;border-radius:3px}.app-layout{min-height:100vh;display:flex}.app-header{height:var(--header-height);background:var(--bg-primary);border-bottom:1px solid var(--border);z-index:100;justify-content:space-between;align-items:center;padding:0 32px;display:flex;position:fixed;top:0;left:0;right:0}.header-logo{cursor:pointer;align-items:center;gap:10px;display:flex}.header-logo-icon{flex-shrink:0;width:32px;height:32px}.header-logo-text{color:var(--text-primary);letter-spacing:-.4px;font-size:18px;font-weight:800}.header-logo-text span{color:var(--accent)}.header-center{align-items:center;gap:12px;display:flex}.header-membership-link{font-size:13px;font-weight:600;font-family:var(--font-sans);color:var(--accent);background:var(--accent-light);cursor:pointer;border:1.5px solid #ff6a3d33;border-radius:20px;align-items:center;gap:5px;padding:5px 12px;transition:all .15s;display:flex}.header-membership-link:hover{background:var(--accent-hover);border-color:var(--accent)}.gen-counter{color:var(--text-muted);background:var(--bg-secondary);border:1px solid var(--border);border-radius:20px;padding:4px 10px;font-size:12px}.gen-counter strong{color:var(--text-primary);font-weight:700}.header-actions{align-items:center;gap:8px;display:flex}.btn{font-family:var(--font-sans);cursor:pointer;white-space:nowrap;border:none;border-radius:8px;justify-content:center;align-items:center;gap:6px;font-size:14px;font-weight:500;transition:all .15s;display:inline-flex}.btn-ghost{color:var(--text-secondary);background:0 0;padding:8px 16px}.btn-ghost:hover{background:var(--accent-hover);color:var(--accent)}.btn-primary{background:var(--accent);color:#fff;padding:8px 20px;font-weight:600}.btn-primary:hover{background:#e55a2b}.sidebar{top:var(--header-height);width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border);flex-direction:column;gap:3px;padding:24px 16px;display:flex;position:fixed;bottom:0;left:0;overflow-y:auto}.sidebar-section-label{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin-top:16px;margin-bottom:8px;padding:0 12px;font-size:11px;font-weight:600}.sidebar-section-label:first-child{margin-top:0}.platform-btn{border-radius:var(--radius);width:100%;color:var(--text-secondary);font-family:var(--font-sans);cursor:pointer;text-align:left;background:0 0;border:none;align-items:center;gap:10px;padding:10px 12px;font-size:14px;font-weight:500;transition:all .15s;display:flex}.platform-btn:hover{background:var(--accent-hover)}.platform-btn.active{font-weight:600}.platform-icon{border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;display:flex}.platform-name{flex:1}.sidebar-footer{margin-top:auto;padding-top:20px}.sidebar-membership-cta{color:var(--accent);background:var(--accent-light);border-radius:var(--radius);cursor:pointer;align-items:center;gap:5px;margin-bottom:12px;padding:8px 12px;font-size:12px;font-weight:600;transition:background .15s;display:flex}.sidebar-membership-cta:hover{background:var(--accent-hover)}.sidebar-desc{color:var(--text-muted);padding:0 4px;font-size:11px;line-height:1.6}.main-content{margin-left:var(--sidebar-width);margin-top:var(--header-height);min-height:calc(100vh - var(--header-height));flex:1;padding:48px}.content-inner{max-width:680px;margin:0 auto}.page-title{color:var(--text-primary);letter-spacing:-.5px;margin-bottom:6px;font-size:28px;font-weight:800;line-height:1.2}.page-subtitle{color:var(--text-muted);flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:28px;font-size:15px;display:flex}.free-badge{color:#e65100;background:#fff3e0;border:1px solid #ffe0b2;border-radius:20px;padding:2px 8px;font-size:11px;font-weight:600}.platform-badge{border-radius:20px;align-items:center;gap:6px;margin-bottom:28px;padding:4px 12px;font-size:12px;font-weight:600;display:inline-flex}.section{margin-bottom:28px}.section-label{color:var(--text-secondary);align-items:center;gap:6px;margin-bottom:10px;font-size:13px;font-weight:600;display:flex}.section-label-icon{width:15px;height:15px;color:var(--text-muted)}.text-input{width:100%;font-family:var(--font-sans);color:var(--text-primary);background:var(--bg-white);border:1.5px solid var(--border);border-radius:var(--radius);resize:none;outline:none;padding:14px 16px;font-size:15px;line-height:1.6;transition:border-color .15s,box-shadow .15s}.text-input::placeholder{color:var(--text-muted)}.text-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #ff6a3d14}textarea.text-input{min-height:100px}.btn-title-generate{width:100%;font-size:14px;font-weight:600;font-family:var(--font-sans);background:var(--bg-white);color:var(--text-primary);border:1.5px solid var(--border);border-radius:var(--radius);cursor:pointer;justify-content:center;align-items:center;gap:8px;padding:12px 20px;transition:all .15s;display:flex}.btn-title-generate:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-light)}.btn-title-generate:disabled{opacity:.5;cursor:not-allowed}.slider-wrapper{background:var(--bg-white);border:1.5px solid var(--border);border-radius:var(--radius);padding:18px 20px}.slider-header{justify-content:space-between;align-items:center;margin-bottom:14px;display:flex}.slider-label{color:var(--text-secondary);font-size:13px;font-weight:600}.slider-value{font-variant-numeric:tabular-nums;text-align:right;min-width:60px;font-size:14px;font-weight:800}.slider-track-wrapper{align-items:center;height:24px;display:flex;position:relative}.slider{appearance:none;background:var(--border);cursor:pointer;border-radius:2px;outline:none;width:100%;height:4px}.slider::-webkit-slider-thumb{appearance:none;background:var(--accent,#ff6a3d);cursor:pointer;border-radius:50%;width:20px;height:20px;transition:transform .1s;box-shadow:0 1px 4px #00000026}.slider::-webkit-slider-thumb:hover{transform:scale(1.15)}.slider::-moz-range-thumb{background:var(--accent,#ff6a3d);cursor:pointer;border:none;border-radius:50%;width:20px;height:20px}.slider-range-labels{color:var(--text-muted);justify-content:space-between;margin-top:6px;font-size:11px;display:flex}.section-divider{background:var(--border-light);height:1px;margin:36px 0}.generate-btn{letter-spacing:.2px;border-radius:var(--radius-lg);cursor:pointer;width:100%;font-size:16px;font-weight:700;font-family:var(--font-sans);background:var(--accent,#ff6a3d);color:#fff;border:none;justify-content:center;align-items:center;gap:10px;margin-top:40px;padding:16px 24px;transition:all .2s;display:flex}.generate-btn:hover{opacity:.9;transform:translateY(-1px);box-shadow:0 4px 16px #ff6a3d4d}.generate-btn:active{box-shadow:none;transform:translateY(0)}.generate-btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none}.output-panel{background:var(--bg-white);border:1.5px solid var(--border);border-radius:var(--radius-lg);margin-top:40px;overflow:hidden}.output-header{border-bottom:1px solid var(--border);background:var(--bg-secondary);justify-content:space-between;align-items:center;padding:14px 20px;display:flex}.output-title{color:var(--text-secondary);align-items:center;gap:6px;font-size:13px;font-weight:600;display:flex}.output-body{padding:24px 20px}.output-text{color:var(--text-primary);white-space:pre-wrap;font-size:15px;line-height:1.75}.output-copy-btn{color:var(--text-muted);border:1.5px solid var(--border);cursor:pointer;font-size:13px;font-weight:500;font-family:var(--font-sans);background:0 0;border-radius:6px;padding:5px 12px;transition:all .15s}.output-copy-btn:hover{border-color:var(--accent);color:var(--accent)}.generating-spinner{border:2px solid #fff6;border-top-color:#fff;border-radius:50%;flex-shrink:0;width:18px;height:18px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.info-callout{background:var(--accent-light);color:var(--text-secondary);border:1px solid #ff6a3d26;border-radius:8px;gap:12px;margin-top:12px;padding:13px 16px;font-size:13px;line-height:1.6;display:flex}.info-callout svg{width:16px;height:16px;color:var(--accent);flex-shrink:0;margin-top:2px}.popup-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;background:#00000073;justify-content:center;align-items:center;padding:20px;animation:.2s fadeIn;display:flex;position:fixed;inset:0}@keyframes fadeIn{0%{opacity:0}}.popup-card{background:var(--bg-white);border-radius:20px;width:100%;max-width:540px;padding:36px;animation:.25s slideUp;position:relative;box-shadow:0 24px 64px #00000026}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}}.popup-badge{color:#fff;background:var(--accent);border-radius:20px;align-items:center;gap:6px;margin-bottom:16px;padding:4px 12px;font-size:12px;font-weight:700;display:inline-flex}.popup-title{color:var(--text-primary);letter-spacing:-.4px;margin-bottom:10px;font-size:24px;font-weight:800;line-height:1.2}.popup-subtitle{color:var(--text-secondary);margin-bottom:28px;font-size:14px;line-height:1.7}.popup-plans{grid-template-columns:1fr 1fr;gap:12px;margin-bottom:20px;display:grid}.popup-plan{background:var(--bg-secondary);border:1.5px solid var(--border);border-radius:14px;padding:18px;transition:border-color .15s;position:relative}.popup-plan:hover{border-color:var(--accent)}.popup-plan.popular{background:var(--accent);border-color:var(--accent);color:#fff}.popup-plan-tag{white-space:nowrap;border-radius:20px;padding:2px 10px;font-size:10px;font-weight:800;position:absolute;top:-10px;left:50%;transform:translate(-50%)}.popup-plan-name{color:inherit;margin-bottom:6px;font-size:13px;font-weight:700}.popup-plan-original{opacity:.6;margin-bottom:4px;font-size:12px;text-decoration:line-through}.popup-plan-popular .popup-plan-original{color:#ffffffb3}.popup-plan-price{color:var(--accent);margin-bottom:4px;font-size:26px;font-weight:800;line-height:1}.popup-plan.popular .popup-plan-price{color:#fff}.popup-plan-price span{font-size:14px;font-weight:600}.popup-plan-note{color:#ffffffbf;margin-bottom:12px;font-size:10px}.popup-plan-btn{width:100%;font-size:13px;font-weight:700;font-family:var(--font-sans);cursor:pointer;text-align:center;background:var(--accent);color:#fff;border:none;border-radius:8px;padding:8px;text-decoration:none;transition:all .15s;display:block}.popup-plan-btn:hover{background:#e55a2b}.popup-plan.popular .popup-plan-btn{color:var(--accent);background:#fff}.popup-close{width:100%;font-size:13px;font-family:var(--font-sans);color:var(--text-muted);cursor:pointer;background:0 0;border:none;padding:8px;transition:color .15s;display:block}.popup-close:hover{color:var(--text-primary)}.membership-page{padding:8px 0 60px}.back-btn{font-size:13px;font-weight:600;font-family:var(--font-sans);color:var(--text-secondary);border:1.5px solid var(--border);cursor:pointer;background:0 0;border-radius:8px;align-items:center;gap:6px;margin-bottom:40px;padding:7px 14px;transition:all .15s;display:inline-flex}.back-btn:hover{border-color:var(--accent);color:var(--accent)}.membership-header{text-align:center;margin-bottom:48px}.membership-badge{color:var(--accent);background:var(--accent-light);border-radius:20px;align-items:center;gap:6px;margin-bottom:20px;padding:5px 14px;font-size:12px;font-weight:700;display:inline-flex}.membership-title{color:var(--text-primary);letter-spacing:-.6px;margin-bottom:14px;font-size:36px;font-weight:800;line-height:1.15}.membership-subtitle{color:var(--text-muted);font-size:15px;line-height:1.7}.plans-outer{grid-template-columns:repeat(3,1fr);align-items:start;gap:16px;margin-bottom:60px;display:grid}.plan-card{background:var(--bg-white);border:1.5px solid var(--border);border-radius:20px;padding:24px;transition:all .2s;position:relative}.plan-card:hover{box-shadow:0 6px 24px #00000012}.plan-card.highlighted{background:var(--accent);border-color:var(--accent);z-index:1;position:relative;transform:scale(1.04);box-shadow:0 10px 48px #ff6a3d80}.plan-card.highlighted:hover{box-shadow:0 14px 56px #ff6a3d99}.plan-badge{white-space:nowrap;border-radius:20px;padding:3px 14px;font-size:11px;font-weight:800;position:absolute;top:-12px;left:50%;transform:translate(-50%)}.plan-tag{opacity:.75;border-radius:20px;margin-bottom:10px;padding:3px 10px;font-size:11px;font-weight:700;display:inline-block}.plan-name{color:var(--text-primary);margin-bottom:6px;font-size:15px;font-weight:800}.plan-card.highlighted .plan-name{color:#fff}.plan-original-price{opacity:.55;margin-bottom:4px;font-size:13px}.plan-card.highlighted .plan-original-price{color:#ffffffa6}.plan-price{color:var(--accent);margin-bottom:4px;font-size:40px;font-weight:800;line-height:1}.plan-card.highlighted .plan-price{color:#fff}.plan-price-unit{vertical-align:top;padding-top:6px;font-size:18px;font-weight:700;display:inline-block}.plan-price-period{opacity:.7;font-size:13px;font-weight:500}.plan-annual-note{color:#fff;background:#ffffff38;border-radius:20px;margin-bottom:8px;padding:2px 10px;font-size:12px;font-weight:700;display:inline-block}.plan-card:not(.highlighted) .plan-annual-note{background:var(--accent-light);color:var(--accent)}.plan-note{opacity:.65;margin-bottom:0;font-size:12px}.plan-card.highlighted .plan-note{color:#ffffffbf}.plan-divider{background:#ffffff2e;height:1px;margin:14px 0}.plan-card:not(.highlighted) .plan-divider{background:var(--border)}.plan-features{flex-direction:column;gap:8px;margin-bottom:20px;list-style:none;display:flex}.plan-feature{align-items:flex-start;gap:8px;font-size:13px;font-weight:500;line-height:1.4;display:flex}.plan-card.highlighted .plan-feature{color:#fff}.plan-cta{width:100%;font-size:14px;font-weight:700;font-family:var(--font-sans);cursor:pointer;text-align:center;border:none;border-radius:10px;padding:12px;transition:all .15s;display:block}.plan-cta-outline{background:var(--accent);color:#fff}.plan-cta-outline:hover{background:#e55a2b}.plan-cta-primary{color:var(--accent);background:#fff}.plan-cta-primary:hover{background:#ffffffe0}.faq-section{margin-top:20px}.faq-title{color:var(--text-primary);letter-spacing:-.3px;margin-bottom:20px;font-size:20px;font-weight:800}.faq-list{flex-direction:column;gap:2px;display:flex}.faq-item{background:var(--bg-white);border:1px solid var(--border);border-radius:10px;padding:16px 18px}.faq-q{color:var(--text-primary);margin-bottom:6px;font-size:14px;font-weight:600}.faq-a{color:var(--text-secondary);font-size:13px;line-height:1.6}.login-card{text-align:center;max-width:420px}.login-close{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:4px;font-size:18px;line-height:1;transition:color .15s;position:absolute;top:16px;right:16px}.login-close:hover{color:var(--text-primary)}.login-logo{color:var(--text-primary);justify-content:center;align-items:center;gap:8px;margin-bottom:16px;font-size:22px;font-weight:800;display:flex}.login-logo .header-logo-icon{width:28px;height:28px}.login-title{color:var(--text-primary);margin-bottom:8px;font-size:22px;font-weight:800}.login-subtitle{color:var(--text-muted);margin-bottom:24px;font-size:13px}.login-tabs{gap:8px;margin-bottom:20px;display:flex}.login-tab{border:1.5px solid var(--border);color:var(--text-muted);font-size:13px;font-weight:600;font-family:var(--font-sans);cursor:pointer;background:0 0;border-radius:8px;flex:1;justify-content:center;align-items:center;gap:6px;padding:10px;transition:all .15s;display:flex}.login-tab.active{border-color:var(--accent);color:var(--accent);background:var(--accent-light)}.login-tab:hover:not(.active){color:var(--text-secondary);border-color:#ccc}.login-wechat{flex-direction:column;align-items:center;gap:16px;display:flex}.qr-placeholder{flex-direction:column;align-items:center;gap:12px;display:flex}.qr-box{border:1.5px solid var(--border);background:#fff;border-radius:12px;padding:8px}.qr-hint{color:var(--text-muted);text-align:center;font-size:13px;line-height:1.5}.login-sms{flex-direction:column;gap:12px;display:flex}.login-field{flex-direction:column;gap:4px;display:flex}.login-field-row{flex-direction:row;align-items:flex-start;gap:8px}.login-input{width:100%;font-family:var(--font-sans);color:var(--text-primary);background:var(--bg-primary);border:1.5px solid var(--border);border-radius:8px;outline:none;flex:1;padding:12px 14px;font-size:14px;transition:border-color .15s}.login-input:focus{border-color:var(--accent)}.login-input::placeholder{color:var(--text-muted)}.code-btn{white-space:nowrap;font-size:13px;font-weight:700;font-family:var(--font-sans);background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:8px;flex-shrink:0;min-width:112px;padding:12px 14px;transition:background .15s}.code-btn:hover:not(:disabled){background:#e55a2b}.code-btn:disabled{opacity:.6;cursor:not-allowed}.login-submit{width:100%;font-size:15px;font-weight:700;font-family:var(--font-sans);background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:10px;padding:13px;transition:background .15s}.login-submit:hover{background:#e55a2b}.login-divider{text-align:center;color:var(--text-muted);font-size:11px;position:relative}.login-divider:before,.login-divider:after{content:"";background:var(--border);width:38%;height:1px;position:absolute;top:50%}.login-divider:before{left:0}.login-divider:after{right:0}.login-divider span{background:#fff;padding:0 8px;position:relative}.login-links{justify-content:center;gap:16px;display:flex}.login-links a{color:var(--text-muted);font-size:12px;text-decoration:none}.login-links a:hover{color:var(--accent)}.login-skip{font-size:12px;font-family:var(--font-sans);color:var(--text-muted);cursor:pointer;text-underline-offset:3px;background:0 0;border:none;margin-top:4px;padding:4px;text-decoration:underline}.login-skip:hover{color:var(--text-secondary)}.upgrade-login-row{text-align:center;color:var(--text-muted);padding-top:4px;font-size:13px}.upgrade-login-btn:hover{opacity:.8}.unlimited-badge{color:#2e7d32;background:#e8f5e9;border:1px solid #c8e6c9;border-radius:10px;margin-left:4px;padding:1px 7px;font-size:10px;font-weight:700}.popup-plans-3col{grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:20px;display:grid}.popup-plans-3col .popup-plan{padding:16px 12px}.popup-plans-3col .popup-plan-price{font-size:22px}.popup-plans-3col .popup-plan-name{font-size:12px}.upgrade-auth-row{color:var(--text-muted);justify-content:center;align-items:center;gap:8px;padding-top:4px;font-size:13px;display:flex}.upgrade-auth-sep{color:var(--border)}.upgrade-register-btn{font-size:13px;font-family:var(--font-sans);color:var(--accent);cursor:pointer;text-underline-offset:2px;background:0 0;border:none;font-weight:700;text-decoration:underline}.upgrade-register-btn:hover{opacity:.8}.upgrade-login-btn{font-size:13px;font-family:var(--font-sans);color:var(--text-secondary);cursor:pointer;text-underline-offset:2px;background:0 0;border:none;font-weight:600;text-decoration:underline}.upgrade-login-btn:hover{color:var(--text-primary)}.pricing-overlay{-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);z-index:10000;background:#0000008c;justify-content:center;align-items:center;padding:20px;animation:.2s fadeIn;display:flex;position:fixed;inset:0}.pricing-card{background:var(--bg-white);border-radius:24px;width:100%;max-width:820px;max-height:90vh;padding:40px 36px 32px;animation:.25s slideUp;position:relative;overflow-y:auto;box-shadow:0 32px 80px #00000038}.pricing-close{background:var(--bg-secondary);cursor:pointer;width:32px;height:32px;color:var(--text-muted);border:none;border-radius:50%;justify-content:center;align-items:center;font-size:16px;transition:background .15s;display:flex;position:absolute;top:16px;right:20px}.pricing-close:hover{background:var(--border)}.pricing-title{color:var(--text-primary);text-align:center;letter-spacing:-.5px;margin-bottom:32px;font-size:26px;font-weight:800}.pricing-plans{grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:28px;display:grid}.pricing-plan{background:var(--bg-secondary);border:2px solid var(--border);border-radius:18px;flex-direction:column;gap:6px;padding:24px 20px 20px;transition:border-color .2s,transform 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