html,body{height:100%;margin:0;padding:0;overflow:hidden}body{background-color:#f5f5f5;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;display:flex;flex-direction:column}.navbar{padding-top:0!important;padding-bottom:0!important;min-height:56px!important;height:56px;background-color:#000000d9!important;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.1)}.navbar .container-fluid{height:100%;display:flex;align-items:center}.navbar .navbar-brand{font-size:16px;padding-top:0;padding-bottom:0;height:auto;line-height:1.4;color:#fff!important}.navbar .navbar-brand svg{width:20px!important;height:20px!important}.navbar .page-info{font-size:14px;color:#ffffffe6!important;display:none}#sound-toggle{display:none!important}#music-toggle{display:flex!important;margin-left:auto!important}#music-toggle-bottom{display:none!important}main.main-content{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:0;box-sizing:border-box;min-height:0;position:relative;background-color:#f5f5f5;overflow:hidden}.flipbook-wrapper{display:flex;align-items:center;justify-content:center;width:100%;height:100%;padding:20px 50px;box-sizing:border-box}.flipbook{position:relative;transition:transform .3s ease}.flipbook .page{background-color:#fff;background-repeat:no-repeat;background-size:100% 100%}.flipbook .page-wrapper{-ms-box-shadow:0 0 20px rgba(0,0,0,.2);-o-box-shadow:0 0 20px rgba(0,0,0,.2);box-shadow:0 0 20px #0003}.flipbook .cover{background:linear-gradient(135deg,#1e3a5f,#2d5a87)!important}.flipbook .cover-title{color:#fff;text-align:center;padding-top:40%;font-size:48px;font-weight:700;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.flipbook .cover-subtitle{color:#fffc;text-align:center;font-size:24px;margin-top:15px}.controls-container{flex-shrink:0;height:56px;display:flex;align-items:center;justify-content:center;gap:24px;padding:0 20px;background-color:#000000d9;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-top:1px solid rgba(255,255,255,.1)}.controls{display:flex;align-items:center;justify-content:center;gap:20px;flex-wrap:wrap}.page-nav{display:flex;gap:6px}.page-nav .btn{width:40px;height:40px;border-radius:6px;font-weight:600;font-size:14px;padding:0}.hint-text{margin-top:10px;font-size:12px;color:#fff9;display:flex;align-items:center;gap:4px}.copyright{margin-top:8px;font-size:11px;color:#fff6;margin-bottom:0}.page-info{font-size:18px;font-weight:500;color:#ffffffe6}.btn-text{display:inline-block}.page-info-mobile{font-size:16px;font-weight:600;color:#ffffffe6}.page-separator{margin:0 4px;color:#ffffff80}@media(max-width:850px){.flipbook-wrapper{padding:8px}.navbar{height:48px;min-height:48px!important}.controls-container{height:48px;padding:0 10px;gap:12px}.navbar .navbar-brand{font-size:14px}.navbar .page-info{display:none}#sound-toggle{display:none!important}#music-toggle{display:flex!important;margin-left:auto!important}#music-toggle-bottom{display:none!important}.btn-text{display:none}.flipbook .cover-title{font-size:28px;padding-top:35%}.flipbook .cover-subtitle{font-size:16px}.controls{gap:10px}.page-nav .btn{width:32px;height:32px;font-size:12px}.controls-container{padding:10px 15px 12px}}@media(max-height:600px){.flipbook .cover-title{font-size:24px;padding-top:30%}}