@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700;800&display=swap";:root{--bg-color: #0b0f19;--bg-color-alt: #101726;--text-primary: #f8fafc;--text-secondary: #94a3b8;--accent-color: #3b82f6;--accent-hover: #60a5fa;--glass-bg: rgba(255, 255, 255, .03);--glass-border: rgba(255, 255, 255, .08);--font-family: "Inter", system-ui, -apple-system, sans-serif;--transition: all .3s cubic-bezier(.4, 0, .2, 1);--radius-sm: .5rem;--radius-md: 1rem;--radius-lg: 1.5rem}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none;transition:var(--transition)}.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}.text-center{text-align:center}.glass{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:var(--radius-md)}.gradient-text{background:linear-gradient(135deg,#60a5fa,#a855f7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;border-radius:var(--radius-sm);font-weight:500;cursor:pointer;transition:var(--transition);border:1px solid transparent;font-size:1rem}.btn-primary{background-color:var(--accent-color);color:#fff;border:none}.btn-primary:hover{background-color:var(--accent-hover);transform:translateY(-2px);box-shadow:0 4px 20px #3b82f666}.btn-secondary{background:var(--glass-bg);color:var(--text-primary);border:1px solid var(--glass-border)}.btn-secondary:hover{background:#ffffff14;transform:translateY(-2px)}.btn-outline{background:transparent;color:var(--accent-color);border:1px solid var(--accent-color)}.btn-outline:hover{background:#3b82f61a}.navbar{position:fixed;top:0;left:0;right:0;z-index:100;border-radius:0;border-left:none;border-right:none;border-top:none}.nav-content{display:flex;justify-content:space-between;align-items:center;height:4.5rem}.logo{font-weight:800;font-size:1.25rem;letter-spacing:-.025em}.nav-links{display:flex;gap:2rem;align-items:center}.nav-links a.lang-btn{border:1px solid var(--glass-border);padding:.25rem .75rem;border-radius:var(--radius-sm)}.nav-links a{font-size:.95rem;color:var(--text-secondary);font-weight:500}.nav-links a:hover{color:var(--text-primary)}.lang-switch{border-left:1px solid var(--glass-border);padding-left:1.5rem;margin-left:.5rem}main{padding-top:6.5rem}.hero{padding:6rem 0 5rem}.hero-title{font-size:clamp(2.5rem,5vw,5rem);font-weight:800;line-height:1.15;letter-spacing:-.025em;margin-bottom:1.5rem}.hero-subtitle{font-size:1.25rem;color:var(--text-secondary);max-width:600px;margin:0 auto 3rem}.hero-actions{display:flex;gap:1rem;justify-content:center;margin-bottom:5rem}.code-window{max-width:600px;margin:0 auto;text-align:left;border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 25px 50px -12px #00000080;background:#0f172a}.window-header{display:flex;gap:.5rem;padding:1rem 1.5rem;background:#0006;border-bottom:1px solid var(--glass-border)}.dot{width:12px;height:12px;border-radius:50%}.dot.red{background:#ef4444}.dot.yellow{background:#eab308}.dot.green{background:#22c55e}.code-window pre{padding:2rem;overflow-x:auto;font-family:Fira Code,monospace;font-size:.95rem;color:#e2e8f0;line-height:1.5}.keyword{color:#c678dd}.flag{color:#61afef}.string{color:#98c379}.section-title{font-size:2.25rem;font-weight:700;margin-bottom:1rem;letter-spacing:-.025em}.section-subtitle{color:var(--text-secondary);font-size:1.1rem;margin-bottom:4rem}.features,.download,.pricing{padding:6rem 0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}.card{padding:2.5rem;transition:transform .3s ease,border-color .3s ease;height:100%}.card:hover{transform:translateY(-8px);border-color:#fff3;box-shadow:0 20px 40px #0006}.card h3{font-size:1.35rem;margin-bottom:1.2rem}.card p{color:var(--text-secondary)}.download-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:1.5rem}.dl-item{padding:2rem;min-width:250px;flex:1;max-width:350px}.dl-item h3{margin-bottom:1.5rem}.dl-item code{display:block;padding:.75rem 1rem;background:#0006;border-radius:var(--radius-sm);color:#38bdf8;font-family:monospace;margin-top:1rem}.recommend{padding:6rem 0}.recommend-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:2rem;max-width:800px;margin:0 auto}.recommend-card{display:block;padding:2.5rem;text-align:left;transition:transform .3s ease,border-color .3s ease}.recommend-card:hover{transform:translateY(-8px);border-color:#fff3;box-shadow:0 20px 40px #0006}.recommend-card h3{font-size:1.35rem;margin-bottom:.8rem}.recommend-card p{color:var(--text-secondary);font-size:.95rem;line-height:1.6}.recommend-icon{font-size:2rem;margin-bottom:1rem}.online-tools{padding:6rem 0}.tools-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;max-width:1000px;margin:0 auto}.tool-card{display:block;padding:1.8rem 1.5rem;text-align:left;transition:transform .3s ease,border-color .3s ease}.tool-card:hover{transform:translateY(-6px);border-color:#fff3;box-shadow:0 15px 30px #0006}.tool-icon{font-size:1.5rem;margin-bottom:.8rem}.tool-card h3{font-size:1.05rem;margin-bottom:.5rem}.tool-card p{color:var(--text-secondary);font-size:.85rem;line-height:1.5}.pricing-grid{max-width:1200px;margin:0 auto;grid-template-columns:repeat(4,1fr)}.pricing-card{position:relative;display:flex;flex-direction:column}.pricing-card.popular{border-color:var(--accent-color);box-shadow:0 0 40px #3b82f626}.badge{position:absolute;top:-14px;left:50%;transform:translate(-50%);background:var(--accent-color);padding:.3rem 1.2rem;border-radius:2rem;font-size:.85rem;font-weight:600;color:#fff;letter-spacing:.5px}.price{font-size:2.5rem;font-weight:800;margin:1.5rem 0 2rem;letter-spacing:-1px}.price span{font-size:1rem;color:var(--text-secondary);font-weight:400;letter-spacing:0}.pricing-card ul{list-style:none;margin-bottom:3rem;flex-grow:1}.pricing-card li{color:var(--text-secondary);margin-bottom:1.2rem;display:flex;align-items:center}.pricing-card li:before{content:"✓";color:var(--accent-color);margin-right:.75rem;font-weight:700}.pricing-card .btn{width:100%}.pricing-loading{grid-column:1 / -1;text-align:center;padding:3rem;color:var(--text-secondary);font-size:1.1rem}.footer{padding:4rem 0 3rem;border-top:1px solid var(--glass-border);color:var(--text-secondary);font-size:.95rem}.powered-by{margin:1rem 0;font-weight:500;font-size:1.1rem}.contact-info a{color:var(--text-primary)}.icp{margin-top:1rem;font-size:.85rem;opacity:.6}.icp a{color:var(--text-secondary);text-decoration:none}.contact-info a:hover{color:var(--accent-hover)}@media (max-width: 768px){.nav-content{flex-direction:column;height:auto;padding:1rem 0;gap:1rem}.lang-switch{border-left:none;padding-left:0;margin-left:0}.hero-title{font-size:2.8rem}.hero-actions{flex-direction:column;padding:0 1rem}.download-grid{flex-direction:column;align-items:center}.dl-item{width:100%;max-width:400px}.recommend-grid{grid-template-columns:1fr}.tools-grid,.pricing-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width: 480px){.pricing-grid{grid-template-columns:1fr}}h1,h2,h3,.section-title,.hero-title{text-wrap:balance;overflow-wrap:break-word}p,li,.hero-subtitle,.section-subtitle{text-wrap:pretty}:lang(zh-Hans){text-align:justify;text-justify:inter-ideograph;word-break:auto}:lang(zh-Hans) p,:lang(zh-Hans) .hero-subtitle{letter-spacing:.015em;line-height:1.7}:lang(zh-Hans) .hero-title{word-break:keep-all}:lang(zh-Hans) .card p{-webkit-hyphens:auto;hyphens:auto}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#0009;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);z-index:1000;display:flex;align-items:center;justify-content:center;opacity:1;transition:opacity .3s ease}.modal-overlay.hidden{opacity:0;pointer-events:none}.modal-content{background:var(--bg-color-alt);padding:3rem;width:90%;max-width:480px;position:relative;transform:translateY(0);transition:transform .3s ease;box-shadow:0 25px 50px -12px #00000080;border:1px solid var(--glass-border)}.modal-overlay.hidden .modal-content{transform:translateY(20px)}.modal-close{position:absolute;top:1rem;right:1.5rem;background:transparent;border:none;color:var(--text-secondary);font-size:2rem;cursor:pointer;transition:color .2s}.modal-close:hover{color:#fff}.price-display{font-size:2.5rem;font-weight:800;color:var(--accent-color);margin:1rem 0}.qr-container{width:220px;height:220px;margin:2rem auto;background:#fff;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;position:relative;padding:10px}.qr-container img{width:100%;height:100%;display:block}.qr-container img.hidden{display:none}.spinner{width:40px;height:40px;border:4px solid var(--glass-border);border-top-color:var(--accent-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.pay-tip{color:var(--text-secondary);font-size:.95rem}.success-icon{width:80px;height:80px;background:#22c55e;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:3rem;margin:0 auto 1.5rem;box-shadow:0 0 30px #22c55e66}.key-display-box{background:#0000004d;border:1px solid var(--glass-border);padding:1.5rem 1rem;border-radius:var(--radius-sm);margin:2rem 0}.key-display-box code{font-family:Fira Code,monospace;font-size:1.4rem;color:#38bdf8;letter-spacing:2px}.warning-text{color:#ef4444;font-size:.85rem;margin-top:1.5rem}.input-group{margin:2rem 0}.input-group input{width:100%;padding:1.25rem 1rem;background:#ffffff0d;border:1px solid var(--glass-border);border-radius:var(--radius-sm);color:#fff;font-size:1.1rem;text-align:center}.input-group input:focus{outline:none;border-color:var(--accent-color)}.error-text{color:#ef4444;margin-top:1rem;font-size:.9rem}.pay-step{transition:opacity .3s}.pay-step.hidden{display:none}.hidden{display:none!important}.retrieve-modal-inner{max-width:720px;padding:2rem}.retrieve-layout{display:flex;gap:2rem;align-items:flex-start;text-align:left;margin-top:.5rem}.retrieve-guide{flex:0 0 220px}.retrieve-guide img{width:100%;border-radius:var(--radius-sm);border:1px solid var(--glass-border)}.retrieve-form{flex:1;min-width:0}.retrieve-form h3{margin-bottom:.5rem}.retrieve-form .desc{margin-top:0;margin-bottom:1.5rem;font-size:.9rem;color:var(--text-secondary);line-height:1.5}.retrieve-form .input-group{margin:0 0 1rem}@media (max-width: 600px){.retrieve-modal-inner{max-width:480px;padding:1.5rem}.retrieve-layout{flex-direction:column}.retrieve-guide{flex:none;width:100%}}.logo{display:flex;align-items:center;gap:.5rem;font-size:1.5rem;font-weight:700}.brand-icon{width:28px;height:28px}