.tang-bottom-nav{position:fixed;bottom:0;left:0;right:0;z-index:1000;background:linear-gradient(to top,rgba(139,69,19,0.98),rgba(160,82,45,0.95));background:linear-gradient(135deg,#8B4513 0%,#A0522D 50%,#8B4513 100%);border-top:4px solid #FFD700;box-shadow:0 -4px 20px rgba(0,0,0,0.3);padding:8px 0}.bottom-nav-container{display:flex;justify-content:center;align-items:center;gap:6px;max-width:1400px;margin:0 auto;padding:0 10px}.nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:8px 10px;color:#FFD700;text-decoration:none;border-radius:8px;transition:all 0.3s cubic-bezier(0.4,0,0.2,1);background:rgba(255,255,255,0.08);border:1px solid rgba(255,215,0,0.3);position:relative;overflow:hidden;font-family:"SimSun","STSong",serif}.nav-item::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.2),transparent);transition:left 0.5s}.nav-item:hover::before{left:100%}.nav-item:hover{background:linear-gradient(135deg,#DAA520,#FFD700);color:#5D4037;border-color:#FFD700;transform:translateY(-2px);box-shadow:0 4px 15px rgba(255,215,0,0.4)}.nav-item.special-link{background:linear-gradient(135deg,rgba(255,215,0,0.3),rgba(255,165,0,0.3));border-color:#FFD700;animation:glow 2s infinite}.nav-item.special-link:hover{background:linear-gradient(135deg,#FFD700,#FFA500);animation:none}@keyframes glow{0%,100%{box-shadow:0 0 5px #FFD700}50%{box-shadow:0 0 20px #FFD700,0 0 30px #FFA500}}.nav-icon{font-size:18px;margin-bottom:2px}.nav-text{font-size:11px;font-weight:500;white-space:nowrap}body{padding-bottom:90px}#map{padding-bottom:80px}@media (max-width:768px){.tang-bottom-nav{height:50px;padding:4px 0;border-top-width:2px;background:rgba(139,69,19,0.9);backdrop-filter:blur(3px)}.bottom-nav-container{gap:4px;padding:0 5px;justify-content:space-around}.nav-item{padding:4px 6px;min-width:0;border-radius:6px;border-width:1px;background:rgba(255,255,255,0.05)}.nav-icon{font-size:14px;margin-bottom:1px}.nav-text{font-size:9px;display:block}.nav-item.special-link{animation:none}body{padding-bottom:55px}#map{padding-bottom:45px}}@media (max-width:480px){.tang-bottom-nav{height:40px;padding:3px 0}.bottom-nav-container{gap:2px}.nav-item{padding:3px 4px}.nav-icon{font-size:12px}.nav-text{font-size:8px}body{padding-bottom:45px}#map{padding-bottom:35px}}@media (max-width:768px){body.mobile-fast-mode header,body.mobile-fast-mode .controls,body.mobile-fast-mode .progress-bar,body.mobile-fast-mode #backToTop{opacity:0;pointer-events:none;transform:translateY(-20px)}body.mobile-fast-mode header{padding:5px 10px !important;transform:translateX(-50%) translateY(-100%)}body.mobile-fast-mode .controls{transform:translateY(50px)}body.mobile-fast-mode .progress-bar{height:0;opacity:0}body.mobile-fast-mode #map{position:fixed !important;top:0 !important;left:0 !important;width:100% !important;height:100% !important;z-index:1 !important}body.mobile-fast-mode .info-card{max-height:60vh;width:100%;border-radius:20px 20px 0 0;bottom:0;top:auto;transform:translateX(-50%) translateY(0)}.mobile-ui-toggle{display:none}@media (max-width:768px){.mobile-ui-toggle{display:flex;position:fixed;top:10px;right:10px;z-index:9999;background:rgba(107,142,35,0.9);color:white;border:none;border-radius:25px;padding:10px 15px;font-size:14px;cursor:pointer;box-shadow:0 4px 15px rgba(0,0,0,0.3);transition:all 0.3s ease;align-items:center;gap:8px}.mobile-ui-toggle:hover{background:rgba(107,142,35,1);transform:scale(1.05)}.mobile-ui-toggle:active{transform:scale(0.95)}.mobile-ui-toggle .toggle-icon{font-size:18px}body.mobile-ui-visible header{opacity:1 !important;pointer-events:auto !important;transform:translateX(-50%) translateY(0) !important;padding:12px 20px !important}body.mobile-ui-visible .controls{opacity:1 !important;pointer-events:auto !important;transform:translateY(0) !important}body.mobile-ui-visible .progress-bar{opacity:1 !important;height:3px !important}body.mobile-ui-visible #backToTop{opacity:1 !important;pointer-events:auto !important}.mobile-ui-toggle.ui-hidden{background:rgba(0,0,0,0.7)}.mobile-ui-toggle.ui-hidden .toggle-text::before{content:'显示工具'}.mobile-ui-toggle:not(.ui-hidden) .toggle-text::before{content:'隐藏工具'}}}@media (min-width:769px){.mobile-ui-toggle{display:none}}.audio-panel{margin-top:15px;padding:10px;background-color:#f5f5f5;border-radius:8px;text-align:center}.audio-panel-title{font-size:16px;margin-bottom:8px;color:#333}.audio-panel-controls{display:flex;align-items:center;justify-content:center;gap:10px}.audio-panel-controls button{padding:6px 12px;background-color:#2196F3;color:white;border:none;border-radius:4px;cursor:pointer}.audio-current-name{font-size:14px;color:#666;min-width:120px}.site-footer{text-align:center;padding:10px 0;font-size:14px;color:#666}.site-footer p{margin:5px 0}.site-footer a{color:#1a73e8;text-decoration:none}