.header{background:linear-gradient(135deg,#1a1a2e,#16213e);color:#fff;position:sticky;top:0;z-index:1000}.header-container{max-width:1400px;margin:0 auto;padding:0 24px}.header-top{border-bottom:1px solid rgba(255,255,255,.1)}.header-top .header-container{display:flex;align-items:center;justify-content:space-between;height:64px}.logo{display:flex;align-items:center;gap:12px;font-size:18px;font-weight:600;color:#4a9eff;white-space:nowrap;margin-right:40px}.logo-icon{width:40px;height:40px;object-fit:contain}.nav{flex:1}.nav-link{color:#ffffffd9;font-size:15px;transition:color .3s;padding:8px 0}.nav-link:hover{color:#4a9eff}.header-actions{display:flex;gap:12px}.upload-btn,.auth-btn{background:#4a9eff;border-color:#4a9eff}.footer{background:#1a1a2e;color:#ffffffa6;padding:24px 0;margin-top:auto}.footer-container{max-width:1400px;margin:0 auto;padding:0 24px;text-align:center}.copyright{font-size:14px;margin-bottom:8px}.icp{font-size:13px}.icp a{color:#ffffffa6;transition:color .3s}.icp a:hover{color:#4a9eff}.layout{min-height:100vh;display:flex;flex-direction:column;background:#f0f2f5}.main-content{flex:1;max-width:1400px;width:100%;margin:0 auto;padding:24px}.home{padding:0}.section{padding:80px 24px;max-width:1200px;margin:0 auto}.section-title{font-size:32px;font-weight:700;color:#1a1a2e;text-align:center;margin-bottom:12px}.section-desc{font-size:16px;color:#888;text-align:center;margin-bottom:48px}.hero-section{background:linear-gradient(135deg,#f8f9ff,#e8f4ff);padding:80px 24px;display:flex;align-items:center;justify-content:center;gap:60px;min-height:500px}.hero-content{flex:1;max-width:500px}.brand-logo{display:flex;align-items:center;gap:12px;margin-bottom:24px}.logo-image{width:48px;height:48px}.brand-name{font-size:24px;font-weight:700;color:#4a9eff}.hero-title{font-size:42px;font-weight:700;color:#1a1a2e;margin-bottom:8px;line-height:1.2}.hero-subtitle{font-size:18px;color:#4a9eff;margin-bottom:16px;font-style:italic}.hero-desc{font-size:16px;color:#666;line-height:1.8;margin-bottom:32px}.hero-stats{display:flex;align-items:center;gap:24px;margin-bottom:32px}.stat-item{display:flex;flex-direction:column;align-items:center}.stat-number{font-size:28px;font-weight:700;color:#4a9eff}.stat-label{font-size:14px;color:#888;margin-top:4px}.stat-divider{width:1px;height:40px;background:#ddd}.hero-cta{height:48px;padding:0 40px;font-size:16px;border-radius:24px;background:linear-gradient(135deg,#4a9eff,#2d7dd2);border:none}.hero-image{flex:1;max-width:500px}.hero-image-placeholder{width:100%;border-radius:16px;overflow:hidden;box-shadow:0 8px 32px #4a9eff33}.hero-screenshot{width:100%;height:auto;display:block}.core-features{background:#fff}.feature-card{text-align:center;border-radius:12px;height:100%;transition:transform .3s,box-shadow .3s}.feature-card:hover{transform:translateY(-8px);box-shadow:0 12px 32px #4a9eff26}.feature-icon{font-size:40px;color:#4a9eff;margin-bottom:16px}.feature-title{font-size:18px;font-weight:600;color:#1a1a2e;margin-bottom:8px}.feature-desc{font-size:14px;color:#888;line-height:1.6}.product-screenshots{background:#f8f9ff}.screenshots-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}.screenshot-card{background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 4px 16px #00000014;transition:transform .3s,box-shadow .3s}.screenshot-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px #4a9eff26}.screenshot-image{width:100%;overflow:hidden}.screenshot-image img{width:100%;height:auto;display:block}.screenshot-info{padding:20px}.screenshot-info h3{font-size:18px;font-weight:600;color:#1a1a2e;margin-bottom:8px}.screenshot-info p{font-size:14px;color:#888;line-height:1.6}.assessment-flow{background:#fff}.assessment-container{display:flex;gap:48px;align-items:flex-start}.assessment-image{flex:1;max-width:400px}.assessment-image img{width:100%;height:auto;border-radius:16px;box-shadow:0 8px 32px #4a9eff26}.assessment-steps{flex:1;display:flex;flex-direction:column;gap:24px}.assessment-step{display:flex;gap:16px;align-items:flex-start}.step-number{width:40px;height:40px;background:linear-gradient(135deg,#4a9eff,#2d7dd2);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;font-weight:700;flex-shrink:0}.step-content h4{font-size:16px;font-weight:600;color:#1a1a2e;margin:0 0 4px}.step-content p{font-size:14px;color:#888;margin:0;line-height:1.6}.dual-interface{background:#f8f9ff}.interface-card{border-radius:12px;height:100%}.interface-header{display:flex;align-items:center;gap:12px;margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid #f0f0f0}.interface-header h3{font-size:20px;font-weight:600;color:#1a1a2e;margin:0}.interface-features{display:flex;flex-direction:column;gap:20px}.interface-feature{display:flex;align-items:flex-start;gap:16px}.interface-feature-icon{width:40px;height:40px;background:#f0f7ff;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#4a9eff;font-size:18px;flex-shrink:0}.interface-feature h4{font-size:15px;font-weight:600;color:#333;margin:0 0 4px}.interface-feature p{font-size:13px;color:#888;margin:0}.learning-space{background:#fff}.learning-space-content{display:flex;gap:48px;align-items:center}.learning-space-visual{flex:1}.visual-placeholder{width:100%;height:300px;background:linear-gradient(135deg,#f0f7ff,#e8f4ff);border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#4a9eff}.visual-placeholder p{margin-top:16px;font-size:16px}.learning-space-features{flex:1;display:flex;flex-direction:column;gap:24px}.space-feature{display:flex;align-items:flex-start;gap:16px}.space-feature-icon{width:48px;height:48px;background:linear-gradient(135deg,#4a9eff,#2d7dd2);border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;flex-shrink:0}.space-feature h4{font-size:16px;font-weight:600;color:#1a1a2e;margin:0 0 4px}.space-feature p{font-size:14px;color:#888;margin:0}.feedback-loop{background:#f8f9ff}.feedback-steps{display:flex;align-items:flex-start;justify-content:center;gap:24px;flex-wrap:wrap}.feedback-step{text-align:center;flex:1;min-width:150px;max-width:200px;position:relative}.step-icon{width:64px;height:64px;background:linear-gradient(135deg,#4a9eff,#2d7dd2);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:24px;margin:0 auto 16px}.feedback-step h4{font-size:16px;font-weight:600;color:#1a1a2e;margin:0 0 8px}.feedback-step p{font-size:13px;color:#888;margin:0}.step-arrow{position:absolute;right:-24px;top:28px;font-size:24px;color:#4a9eff}.stats-section{background:linear-gradient(135deg,#1a1a2e,#16213e);padding:60px 24px}.stats-content{display:flex;justify-content:center;gap:80px;flex-wrap:wrap}.stats-item{text-align:center}.stats-number{display:block;font-size:48px;font-weight:700;color:#4a9eff}.stats-label{font-size:16px;color:#fff9;margin-top:8px}@media(max-width:768px){.hero-section{flex-direction:column;padding:40px 16px;gap:32px}.hero-title{font-size:28px}.hero-stats{justify-content:center}.section{padding:48px 16px}.section-title{font-size:24px}.screenshots-grid{grid-template-columns:1fr}.assessment-container{flex-direction:column}.assessment-image{max-width:100%}.learning-space-content{flex-direction:column}.feedback-steps{flex-direction:column;align-items:center}.step-arrow{display:none}.stats-content{gap:40px}.stats-number{font-size:36px}}.resource-card{border-radius:8px;overflow:hidden;transition:transform .3s,box-shadow .3s}.resource-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px #00000026}.card-cover{position:relative;height:200px;overflow:hidden}.card-cover img{width:100%;height:100%;object-fit:cover}.free-tag,.discount-tag{position:absolute;top:12px;right:12px;font-size:14px;padding:4px 12px;border-radius:4px;z-index:1}.card-tags{margin-bottom:8px}.tag-item{font-size:12px;color:#666;display:inline-flex;align-items:center;gap:4px}.tag-dot{width:6px;height:6px;border-radius:50%;display:inline-block}.card-title{font-size:15px;font-weight:500;color:#1a1a2e;margin-bottom:12px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card-meta{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:#999}.card-date{color:#666}.card-views{display:flex;align-items:center;gap:4px}.card-price{display:flex;align-items:center;gap:4px;color:#faad14;font-weight:500}.card-price.free{color:#52c41a}.paid-resources{padding:20px 0}.resource-grid{margin-bottom:40px}.pagination-wrapper{text-align:center;padding:20px 0}.contact{padding:20px 0}.contact-content{display:grid;grid-template-columns:1fr 1.5fr;gap:24px}.info-card .info-item{display:flex;align-items:flex-start;gap:16px;padding:16px 0;border-bottom:1px solid #f0f0f0}.info-card .info-item:last-child{border-bottom:none}.info-icon{font-size:24px;color:#4a9eff;margin-top:4px}.info-label{font-size:14px;color:#999;margin-bottom:4px}.info-value{font-size:16px;color:#333;font-weight:500}@media(max-width:768px){.contact-content{grid-template-columns:1fr}}.about{padding:20px 0}.about-content{display:flex;flex-direction:column;gap:24px}.about-card{border-radius:8px}.about-text{font-size:15px;line-height:1.8;color:#555;margin-bottom:16px;text-indent:2em}.about-text:last-child{margin-bottom:0}.values-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.value-item{text-align:center;padding:24px 16px;background:#f8f9fa;border-radius:8px}.value-item h3{font-size:20px;color:#4a9eff;margin-bottom:12px}.value-item p{font-size:14px;color:#666;line-height:1.6}@media(max-width:768px){.values-grid{grid-template-columns:repeat(2,1fr)}}.agreement{padding:20px 0}.agreement-card{border-radius:8px}.agreement-content{font-size:15px;line-height:1.8;color:#555}.agreement-content h3{font-size:18px;color:#1a1a2e;margin:24px 0 12px}.agreement-content h3:first-child{margin-top:0}.agreement-content p{margin-bottom:12px;text-indent:2em}.agreement-date{text-align:right;color:#999;margin-top:32px;text-indent:0!important}.upload-page{padding:20px 0}.page-title{font-size:24px;font-weight:600;color:#1a1a2e;margin-bottom:24px;padding-bottom:16px;border-bottom:2px solid #4a9eff}.upload-card{border-radius:8px}.upload-tips{margin-top:24px;padding-top:24px;border-top:1px solid #f0f0f0}.upload-tips h4{font-size:16px;color:#333;margin-bottom:12px}.upload-tips ul{padding-left:20px}.upload-tips li{font-size:14px;color:#666;line-height:1.8}.auth{padding:40px 0;display:flex;justify-content:center}.auth-container{width:100%;max-width:480px}.auth-card{border-radius:8px}.auth-form{margin-top:24px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f0f2f5}#root{min-height:100vh;display:flex;flex-direction:column}a{text-decoration:none;color:inherit}