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.5rem}.qr-modal-id{font-size:1rem;color:#666;background:#f8f9fa;padding:.5rem 1rem;border-radius:25px;display:inline-block;margin-top:.5rem}@media (max-width: 768px){.container{padding:0 1rem}.nav-menu{position:fixed;top:72px;left:0;right:0;background:#fffffffa;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(229,231,235,.8);flex-direction:column;padding:20px 24px;transform:translateY(-100%);opacity:0;visibility:hidden;transition:all .3s ease;z-index:999}.nav-menu-open{transform:translateY(0);opacity:1;visibility:visible}.nav-link{padding:12px 0;font-size:1.1rem;border-bottom:1px solid rgba(229,231,235,.3)}.nav-link:last-of-type{border-bottom:none}.nav-actions{display:none}.nav-actions-mobile{display:flex}.mobile-menu-toggle{display:block}.nav-logo .logo-text{font-size:1.3rem}.hero-content h1{font-size:2.5rem;line-height:1.2}.hero-content p{font-size:1.1rem;margin:1rem 0 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.75rem}.nav-container{padding:0 16px}.nav-logo .logo-text{font-size:1.1rem}.hero{padding:100px 0 60px}.hero-content h1{font-size:1.8rem;line-height:1.1}.hero-content p{font-size:.95rem;margin:1rem 0 1.5rem}.btn{padding:14px 20px;font-size:.95rem;min-height:48px}.btn.large{padding:16px 24px;font-size:1rem;min-height:52px}.stats-grid{grid-template-columns:1fr;gap:1rem}.stat-card{padding:1.25rem .75rem}.qr-modal-content{padding:1rem;margin:.5rem;width:calc(100% - 1rem)}.qr-modal-image{width:140px;height:140px}.xiaohongshu-notes{padding:60px 0}.view-toggle{flex-direction:column;gap:.5rem;margin:1.5rem 0}.toggle-btn{width:100%;justify-content:center;padding:1rem 1.5rem}.notes-container.card-view{grid-template-columns:1fr;gap:1.5rem}.list-view .note-item{flex-direction:column}.list-view .note-image{width:100%;height:180px}.list-view .note-content,.card-view .note-content{padding:1rem}.note-title{font-size:1.1rem}.note-text{font-size:.9rem}.note-meta{flex-direction:column;gap:.5rem;align-items:flex-start}.pagination{flex-direction:column;gap:1rem}.page-numbers{order:-1}.page-btn{width:100%;max-width:200px}}@media (max-width: 480px){.xiaohongshu-notes{padding:40px 0}.card-view .note-image,.list-view .note-image{height:150px}.note-tags{gap:.25rem}.note-tag{font-size:.7rem;padding:.2rem .5rem}.page-number{width:35px;height:35px;font-size:.9rem}}.douyin-videos{padding:80px 0;background:linear-gradient(135deg,#f8fafc,#e2e8f0)}.videos-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:2rem;margin-top:3rem}.video-item{background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;transition:all .3s ease;cursor:pointer;position:relative}.video-item:hover{transform:translateY(-8px);box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a}.video-cover{position:relative;width:100%;height:280px;overflow:hidden}.video-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}.video-item:hover .video-cover img{transform:scale(1.05)}.play-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:#0000004d;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s ease}.video-item:hover .play-overlay{opacity:1}.play-button{width:60px;height:60px;background:#ffffffe6;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;color:#667eea;transition:all .3s ease}.play-button:hover{background:#fff;transform:scale(1.1)}.video-content{padding:1.5rem}.video-title{font-size:1.1rem;font-weight:600;color:#333;margin-bottom:.5rem;line-height:1.4}.video-description{color:#666;font-size:.9rem;line-height:1.5;margin-bottom:.5rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.video-platform{color:#999;font-size:.8rem;margin:0;font-weight:500}@media (max-width: 768px){.douyin-videos{padding:60px 0}.videos-container{grid-template-columns:1fr;gap:1.5rem;margin-top:2rem}.video-cover{height:240px}.video-content{padding:1.25rem}.video-title{font-size:1rem}}@media (max-width: 480px){.douyin-videos{padding:40px 0}.video-cover{height:200px}.video-content{padding:1rem}.play-button{width:50px;height:50px;font-size:16px}}