*{box-sizing:border-box;margin:0;padding:0}:root{--primary-color:#eab600;--secondary-color:#d4a017;--accent-color:gold;--text-dark:#333;--text-light:#666;--background-light:#faf9f6;--background-white:#fff;--border-color:#e5e5e5;--shadow:0 2px 8px rgba(0,0,0,.1);--shadow-hover:0 4px 16px rgba(0,0,0,.15)}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif;color:var(--text-dark);line-height:1.6;background-color:var(--background-light)}.container{max-width:1200px;margin:0 auto;padding:0 20px}.hero-section{background:linear-gradient(135deg,#eab600,#d4a017);color:#fff;padding:120px 20px;text-align:center;position:relative;overflow:hidden}.hero-section:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background-image:radial-gradient(circle at 20% 50%,hsla(0,0%,100%,.1) 0,transparent 50%),radial-gradient(circle at 80% 80%,hsla(0,0%,100%,.1) 0,transparent 50%);pointer-events:none}.hero-content{position:relative;z-index:1}.hero-title{font-size:4rem;font-weight:700;margin-bottom:1rem;letter-spacing:.05em;text-shadow:2px 2px 4px rgba(0,0,0,.2)}.hero-subtitle{font-size:1.5rem;margin-bottom:1rem;opacity:.95}.hero-description{font-size:1.1rem;margin-bottom:2.5rem;opacity:.9;max-width:600px;margin-left:auto;margin-right:auto}.download-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.btn-primary,.btn-secondary{display:inline-block;padding:14px 40px;font-size:1.1rem;font-weight:600;text-decoration:none;border-radius:50px;transition:all .3s ease;cursor:pointer}.btn-primary{background-color:#fff;color:var(--primary-color);box-shadow:0 4px 15px rgba(0,0,0,.2)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.3)}.btn-secondary{background-color:transparent;color:#fff;border:2px solid #fff}.btn-secondary:hover{background-color:hsla(0,0%,100%,.1);transform:translateY(-2px)}section{padding:80px 20px}.section-title{font-size:2.5rem;font-weight:700;text-align:center;margin-bottom:3rem;color:var(--text-dark);position:relative;padding-bottom:1rem}.section-title:after{content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:60px;height:4px;background:linear-gradient(90deg,var(--primary-color),var(--accent-color));border-radius:2px}.features-section{background-color:var(--background-white)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));grid-gap:2rem;gap:2rem;margin-top:3rem}.feature-card{background:var(--background-light);padding:2rem;border-radius:12px;text-align:center;transition:all .3s ease;border:1px solid var(--border-color)}.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:var(--primary-color)}.feature-icon{font-size:3rem;margin-bottom:1rem}.feature-title{font-size:1.5rem;font-weight:600;margin-bottom:1rem;color:var(--text-dark)}.feature-description{color:var(--text-light);line-height:1.8}.about-section{background-color:var(--background-light)}.about-content{max-width:800px;margin:0 auto}.about-text{font-size:1.1rem;line-height:2;color:var(--text-light);margin-bottom:1.5rem;text-align:center}.download-section{background:linear-gradient(135deg,#f5f5f5,#fff)}.download-subtitle{text-align:center;font-size:1.1rem;color:var(--text-light);margin-bottom:3rem}.download-content{display:flex;gap:4rem;align-items:center;justify-content:center;flex-wrap:wrap;max-width:900px;margin:0 auto}.qrcode-placeholder{flex:0 0 auto}.qrcode-box{width:280px;height:280px;background:#fff;border:2px solid var(--border-color);border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:var(--shadow);font-size:1.1rem;color:var(--text-light);padding:20px;text-align:center}.qrcode-tip{font-size:.9rem;color:var(--text-light);margin-top:10px}.download-info{flex:1 1;min-width:300px}.download-info h3{font-size:1.8rem;margin-bottom:1.5rem;color:var(--text-dark)}.download-list{list-style:none;margin-bottom:2rem}.download-list li{font-size:1.1rem;padding:.8rem 0;color:var(--text-light);border-bottom:1px solid var(--border-color)}.download-list li:last-child{border-bottom:none}.platform-badges{display:flex;gap:1rem;flex-wrap:wrap}.badge{background:var(--primary-color);color:#fff;padding:10px 24px;border-radius:20px;font-weight:600;font-size:1rem}.footer{background-color:var(--text-dark);color:#fff;padding:40px 20px;text-align:center}.footer-content p{margin:.5rem 0;font-size:.95rem}.footer-content p:first-child{font-weight:500;margin-bottom:1rem}.footer-content a{color:var(--accent-color);text-decoration:none;transition:color .3s ease}.footer-content a:hover{color:var(--primary-color);text-decoration:underline}@media (max-width:768px){.hero-title{font-size:2.5rem}.hero-subtitle{font-size:1.2rem}.hero-description{font-size:1rem}.section-title{font-size:2rem}.features-grid{grid-template-columns:1fr}.download-content{flex-direction:column;gap:2rem}section{padding:60px 20px}.hero-section{padding:80px 20px}}@media (max-width:480px){.hero-title{font-size:2rem}.btn-primary,.btn-secondary{padding:12px 30px;font-size:1rem}.qrcode-box{width:240px;height:240px}}