/* Ziliao page */
:root{--bg-deep:#000;--primary:#FFB800;--primary-light:#FFD54F;--primary-dark:#E6A000;--text-main:#fff;--text-dim:#9E9E9E;--glass-bg:rgba(40,30,0,0.35);--glass-border:rgba(255,184,0,0.2);--accent-warm:#FF8F00}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC",sans-serif;background:var(--bg-deep);color:var(--text-main);overflow-x:hidden;line-height:1.6}
#particles-canvas{position:fixed;top:0;left:0;width:100%;height:100%;z-index:-1}
.navbar{position:fixed;top:0;left:0;width:100%;height:80px;background:rgba(0,0,0,0.8);backdrop-filter:blur(20px);border-bottom:1px solid var(--glass-border);display:flex;justify-content:space-between;align-items:center;padding:0 5%;z-index:1000;transition:all .3s}
.nav-logo{display:flex;align-items:center;text-decoration:none}
.nav-logo img{height:42px;width:auto;display:block}
.nav-menu{display:flex;gap:40px}
.nav-menu a{color:var(--text-dim);text-decoration:none;font-size:.95em;transition:all .3s;position:relative}
.nav-menu a::after{content:"";position:absolute;bottom:-5px;left:0;width:0;height:2px;background:var(--primary);transition:width .3s}
.nav-menu a:hover{color:var(--primary)}
.nav-menu a:hover::after{width:100%}
.nav-menu a.active{color:var(--primary)}
.nav-menu a.active::after{width:100%}
.nav-cta{padding:12px 30px;background:linear-gradient(135deg,var(--primary),var(--accent-warm));border:none;border-radius:30px;color:#1a1a1a;font-weight:700;cursor:pointer;transition:all .3s}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(255,184,0,.4)}
.page-header{padding:140px 5% 60px;text-align:center;position:relative}
.page-title{font-size:clamp(2em,4vw,3.5em);font-weight:800;margin-bottom:20px;color:#fff;letter-spacing:2px}
.page-subtitle{font-size:1em;color:var(--text-dim);max-width:700px;margin:0 auto;line-height:1.8}
.download-container{max-width:900px;margin:0 auto;padding:0 5% 80px}
.download-card{display:flex;align-items:center;gap:20px;background:var(--glass-bg);backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:16px;padding:25px 30px;margin-bottom:20px;transition:all .3s}
.download-card:hover{border-color:var(--primary);transform:translateX(5px)}
.file-icon-wrapper{width:60px;height:60px;min-width:60px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.8em;flex-shrink:0}
.icon-ppt{background:rgba(255,152,0,0.15);border:1px solid rgba(255,152,0,0.3)}
.icon-word{background:rgba(33,150,243,0.15);border:1px solid rgba(33,150,243,0.3)}
.icon-excel{background:rgba(76,175,80,0.15);border:1px solid rgba(76,175,80,0.3)}
.icon-video{background:rgba(156,39,176,0.15);border:1px solid rgba(156,39,176,0.3)}
.icon-image{background:rgba(244,67,54,0.15);border:1px solid rgba(244,67,54,0.3)}
.file-info{flex:1;min-width:0}
.file-title{color:#fff;font-size:1em;font-weight:600;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.file-meta{color:var(--text-dim);font-size:.85em;display:flex;gap:15px}
.btn-download{padding:12px 28px;background:linear-gradient(135deg,var(--primary),var(--accent-warm));border:none;border-radius:30px;color:#1a1a1a;font-weight:700;font-size:.9em;cursor:pointer;transition:all .3s;white-space:nowrap}
.btn-download:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(255,184,0,.3)}
.cta-section{text-align:center;padding:80px 5%;background:rgba(255,184,0,0.04);border-top:1px solid var(--glass-border)}
.cta-section h2{font-size:clamp(1.5em,3vw,2em);margin-bottom:20px}
.btn-primary-large{padding:15px 40px;background:linear-gradient(135deg,var(--primary),var(--accent-warm));border:none;border-radius:50px;color:#1a1a1a;font-size:1.1em;font-weight:700;cursor:pointer;transition:all .3s;display:inline-flex;align-items:center;gap:10px}
.btn-primary-large:hover{transform:translateY(-2px);box-shadow:0 10px 20px rgba(255,184,0,.3)}
.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.7);backdrop-filter:blur(8px);z-index:2000;display:none;align-items:center;justify-content:center}
.modal-overlay.active{display:flex}
.modal-content{background:rgba(20,20,20,0.95);border:1px solid var(--glass-border);border-radius:24px;padding:40px;width:90%;max-width:460px;position:relative;backdrop-filter:blur(20px)}
.modal-close{position:absolute;top:15px;right:20px;background:none;border:none;color:var(--text-dim);font-size:1.8em;cursor:pointer;transition:color .3s}
.modal-close:hover{color:var(--primary)}
.modal-header{text-align:center;margin-bottom:30px}
.modal-icon{font-size:3em;margin-bottom:15px}
.modal-title{font-size:1.5em;font-weight:700;margin-bottom:10px;color:#fff}
.modal-desc{color:var(--text-dim);font-size:.9em;line-height:1.6}
.target-file-name{color:var(--primary-light);font-weight:600}
.input-group{margin-bottom:20px}
.password-input{width:100%;padding:14px 18px;background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.1);border-radius:12px;color:#fff;font-size:1em;outline:none;transition:all .3s}
.password-input:focus{border-color:var(--primary);box-shadow:0 0 0 2px rgba(255,184,0,0.1)}
.modal-actions{display:flex;gap:10px}
.btn-confirm{flex:1;padding:14px;background:linear-gradient(135deg,var(--primary),var(--accent-warm));border:none;border-radius:12px;color:#1a1a1a;font-size:1em;font-weight:700;cursor:pointer;transition:all .3s}
.btn-confirm:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(255,184,0,.3)}
.footer{text-align:center;padding:30px 5%;background:var(--bg-deep);border-top:1px solid var(--glass-border);color:var(--text-dim);font-size:.9em;position:relative;z-index:10}
.footer a{color:var(--text-dim);text-decoration:none;transition:color .3s}
.footer a:hover{color:var(--primary-light)}
.footer p{margin-bottom:5px}
.mobile-menu-btn{display:none;font-size:1.8em;color:var(--primary);cursor:pointer;user-select:none}
@media(max-width:768px){
  .mobile-menu-btn{display:block}
  .nav-menu{display:flex;flex-direction:column;position:absolute;top:80px;left:0;width:100%;background:rgba(0,0,0,0.95);backdrop-filter:blur(20px);padding:20px 0;gap:25px;text-align:center;border-bottom:1px solid var(--glass-border);opacity:0;transform:translateY(-20px);pointer-events:none;transition:all .3s}
  .nav-menu.active{opacity:1;transform:translateY(0);pointer-events:auto}
  .download-card{flex-direction:column;text-align:center;padding:25px}
  .file-icon-wrapper{margin:0 auto}
  .file-title{white-space:normal}
  .file-meta{justify-content:center}
  .btn-download{width:100%}
}