/* ========================================
   App Template - 现代渐变下载风格
   ======================================== */

/* Reset & Base */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:#0f172a;color:#e2e8f0;font-size:15px;line-height:1.7;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:#a5b4fc;text-decoration:none;transition:color .3s}
a:hover{color:#818cf8}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none;padding:0;margin:0}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ========== Header ========== */
.app-header{
  position:fixed;top:0;left:0;width:100%;z-index:9999;
  background:rgba(15,23,42,0.85);backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(99,102,241,0.15);
  transition:all .3s;
}
.app-header .container{display:flex;align-items:center;justify-content:space-between;height:64px}
.app-header .logo-area{display:flex;align-items:center;flex-shrink:0}
.app-header .logo-area a{display:flex;align-items:center}
.app-header .logo-area img{height:38px;width:auto}
.app-header .logo-area .site-name{color:#e2e8f0;font-size:18px;font-weight:700;margin-left:10px;white-space:nowrap}

/* Nav */
.app-nav{display:flex;align-items:center;gap:4px}
.app-nav>li{position:relative}
.app-nav>li>a{
  display:block;color:#94a3b8;font-size:14px;padding:8px 16px;
  border-radius:8px;transition:all .3s;white-space:nowrap;font-weight:500;
}
.app-nav>li>a:hover,.app-nav>li.active>a{color:#fff;background:rgba(99,102,241,0.2)}

/* Dropdown */
.app-nav .dropdown{position:relative}
.app-nav .dropdown .dropdown-toggle::after{content:' ▾';font-size:10px;margin-left:3px}
.app-nav .dropdown .dropdown-menu{
  display:none;position:absolute;top:100%;left:0;
  background:#1e293b;min-width:160px;border-radius:10px;
  box-shadow:0 10px 30px rgba(0,0,0,0.4);padding:6px 0;z-index:10000;
  border:1px solid rgba(99,102,241,0.15);
}
.app-nav .dropdown:hover .dropdown-menu{display:block}
.app-nav .dropdown .dropdown-menu li a{
  display:block;padding:10px 20px;color:#cbd5e1;font-size:14px;white-space:nowrap;transition:.2s;
}
.app-nav .dropdown .dropdown-menu li a:hover{color:#fff;background:rgba(99,102,241,0.15)}

/* CTA */
.app-header .header-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}

/* Buttons */
.app-btn{
  display:inline-block;padding:10px 24px;border-radius:10px;font-size:14px;font-weight:600;
  text-align:center;cursor:pointer;transition:all .3s;border:none;white-space:nowrap;
  position:relative;overflow:hidden;
}
.app-btn-primary{
  background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;
  box-shadow:0 4px 20px rgba(99,102,241,0.35);
}
.app-btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(99,102,241,0.5);color:#fff}
.app-btn-outline{
  background:transparent;color:#a5b4fc;border:1px solid rgba(99,102,241,0.4);
}
.app-btn-outline:hover{background:rgba(99,102,241,0.15);border-color:#818cf8;color:#fff}
.app-btn-cyan{
  background:linear-gradient(135deg,#06b6d4,#0ea5e9);color:#fff;
  box-shadow:0 4px 20px rgba(6,182,212,0.35);
}
.app-btn-cyan:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(6,182,212,0.5);color:#fff}
.app-btn-lg{padding:16px 40px;font-size:17px;border-radius:12px}
.app-btn-xl{padding:20px 48px;font-size:18px;border-radius:14px}

/* Mobile Toggle */
.app-menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.app-menu-toggle span{display:block;width:24px;height:2px;background:#e2e8f0;margin:5px 0;transition:.3s}

/* ========== Hero ========== */
.app-hero{
  position:relative;min-height:100vh;
  background:linear-gradient(135deg,#0f172a 0%,#1e1b4b 40%,#312e81 70%,#1e1b4b 100%);
  display:flex;align-items:center;justify-content:center;text-align:center;
  overflow:hidden;
}
.app-hero::before{
  content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;
  background:radial-gradient(circle at 30% 50%,rgba(99,102,241,0.15) 0%,transparent 50%),
             radial-gradient(circle at 70% 30%,rgba(6,182,212,0.1) 0%,transparent 50%),
             radial-gradient(circle at 50% 80%,rgba(139,92,246,0.12) 0%,transparent 50%);
  animation:hero-glow 8s ease-in-out infinite alternate;
}
@keyframes hero-glow{
  0%{transform:translate(0,0)}
  100%{transform:translate(30px,-30px)}
}
.app-hero .hero-content{position:relative;z-index:2;max-width:900px;padding:120px 24px 80px}
.app-hero .hero-badge{
  display:inline-block;padding:6px 18px;border-radius:20px;
  background:rgba(99,102,241,0.2);border:1px solid rgba(99,102,241,0.3);
  color:#a5b4fc;font-size:13px;font-weight:600;margin-bottom:24px;
}
.app-hero .hero-content h1{
  font-size:56px;font-weight:800;color:#fff;margin-bottom:20px;line-height:1.2;
  background:linear-gradient(135deg,#fff,#a5b4fc);-webkit-background-clip:text;
  -webkit-text-fill-color:transparent;background-clip:text;
}
.app-hero .hero-content h1 span{background:linear-gradient(135deg,#06b6d4,#818cf8);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.app-hero .hero-content .hero-desc{font-size:18px;color:#94a3b8;margin-bottom:40px;line-height:1.7;max-width:650px;margin-left:auto;margin-right:auto}
.app-hero .hero-content .hero-btns{display:flex;gap:18px;justify-content:center;flex-wrap:wrap}
.app-hero .hero-mockup{margin-top:50px}
.app-hero .hero-mockup img{max-width:280px;margin:0 auto;border-radius:20px;box-shadow:0 20px 60px rgba(99,102,241,0.3)}
.app-hero .hero-stats{display:flex;gap:40px;justify-content:center;margin-top:50px;flex-wrap:wrap}
.app-hero .hero-stats .stat-item{text-align:center}
.app-hero .hero-stats .stat-num{font-size:36px;font-weight:800;color:#fff;line-height:1}
.app-hero .hero-stats .stat-label{font-size:13px;color:#94a3b8;margin-top:6px}

/* ========== Section Common ========== */
.app-section{padding:100px 0;position:relative}
.app-section.bg-alt{background:rgba(30,41,59,0.5)}
.app-section .section-header{text-align:center;margin-bottom:60px}
.app-section .section-header .section-badge{
  display:inline-block;padding:5px 16px;border-radius:20px;
  background:rgba(99,102,241,0.15);color:#a5b4fc;font-size:13px;font-weight:600;margin-bottom:16px;
}
.app-section .section-header h2{font-size:38px;font-weight:700;color:#fff;margin-bottom:12px}
.app-section .section-header .section-subtitle{font-size:16px;color:#94a3b8;max-width:600px;margin:0 auto}

/* ========== Features ========== */
.app-features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.app-feature-card{
  background:rgba(30,41,59,0.8);border:1px solid rgba(99,102,241,0.1);
  border-radius:16px;padding:36px 28px;text-align:center;transition:all .4s;
  backdrop-filter:blur(8px);
}
.app-feature-card:hover{transform:translateY(-8px);border-color:rgba(99,102,241,0.4);box-shadow:0 20px 50px rgba(99,102,241,0.15)}
.app-feature-card .feature-icon{
  width:200px;height:200px;margin:0 auto 20px;border-radius:18px;
  background:linear-gradient(135deg,rgba(99,102,241,0.2),rgba(139,92,246,0.2));
  display:flex;align-items:center;justify-content:center;overflow:hidden;
}
.app-feature-card .feature-icon img{width:100%;height:100%;object-fit:cover}
.app-feature-card h3{font-size:18px;font-weight:700;color:#fff;margin-bottom:10px}
.app-feature-card p{font-size:14px;color:#94a3b8;line-height:1.6}

/* ========== Screenshots Carousel ========== */
.app-screenshots{overflow:hidden}
.app-screenshots-track{display:flex;gap:24px;animation:screenshot-scroll 30s linear infinite;width:fit-content}
.app-screenshots-track:hover{animation-play-state:paused}
.app-screenshot-item{flex-shrink:0;width:240px;border-radius:16px;overflow:hidden;box-shadow:0 10px 30px rgba(0,0,0,0.3);transition:.3s}
.app-screenshot-item:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(99,102,241,0.2)}
.app-screenshot-item img{width:100%;height:280px;object-fit:cover}
@keyframes screenshot-scroll{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* ========== Download Cards ========== */
.app-download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.app-download-card{
  background:linear-gradient(135deg,rgba(30,41,59,0.9),rgba(15,23,42,0.9));
  border:1px solid rgba(99,102,241,0.12);border-radius:16px;padding:40px 28px;
  text-align:center;transition:all .4s;position:relative;overflow:hidden;
}
.app-download-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,#6366f1,#8b5cf6,#06b6d4);
}
.app-download-card:hover{transform:translateY(-8px);box-shadow:0 20px 50px rgba(99,102,241,0.2)}
.app-download-card .dl-icon{width:180px;height:180px;margin:0 auto 20px;border-radius:16px;overflow:hidden}
.app-download-card .dl-icon img{width:100%;height:100%;object-fit:cover}
.app-download-card h3{font-size:20px;font-weight:700;color:#fff;margin-bottom:8px}
.app-download-card p{font-size:14px;color:#94a3b8;margin-bottom:20px}
.app-download-card .dl-info{font-size:12px;color:#64748b;margin-bottom:20px}

/* ========== Partners ========== */
.app-partners-wrap{overflow:hidden}
.app-partners-track{display:flex;animation:partner-scroll 24s linear infinite;width:fit-content;gap:20px}
.app-partners-track:hover{animation-play-state:paused}
.app-partner-item{
  flex-shrink:0;background:rgba(30,41,59,0.7);border-radius:12px;
  padding:24px 30px;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,0.05);transition:.3s;min-width:170px;
}
.app-partner-item:hover{background:rgba(99,102,241,0.1);border-color:rgba(99,102,241,0.3)}
.app-partner-item img{height:180px;width:auto;object-fit:contain}
@keyframes partner-scroll{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* ========== FAQ ========== */
.app-faq{max-width:800px;margin:0 auto}
.app-faq-item{background:rgba(30,41,59,0.8);border-radius:12px;margin-bottom:12px;overflow:hidden;border:1px solid rgba(255,255,255,0.05)}
.app-faq-item .faq-q{padding:18px 24px;font-size:16px;font-weight:600;color:#e2e8f0;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:.3s}
.app-faq-item .faq-q:hover{background:rgba(99,102,241,0.05)}
.app-faq-item .faq-q::after{content:'+';font-size:20px;color:#818cf8;transition:.3s}
.app-faq-item.open .faq-q::after{content:'−'}
.app-faq-item .faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:.3s;color:#94a3b8;font-size:14px;line-height:1.7}
.app-faq-item.open .faq-a{padding:0 24px 18px;max-height:240px}

/* ========== CTA Banner ========== */
.app-cta-banner{
  text-align:center;padding:80px 24px;
  background:linear-gradient(135deg,rgba(99,102,241,0.1),rgba(139,92,246,0.1));
  border:1px solid rgba(99,102,241,0.15);border-radius:24px;margin:0 20px;
}
.app-cta-banner h2{font-size:32px;font-weight:700;color:#fff;margin-bottom:12px}
.app-cta-banner p{font-size:16px;color:#94a3b8;margin-bottom:30px}

/* ========== Footer ========== */
.app-footer{background:#0c1222;border-top:1px solid rgba(99,102,241,0.1);padding:60px 0 30px}
.app-footer .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.05);margin-bottom:30px}
.app-footer h4{color:#e2e8f0;font-size:16px;margin-bottom:16px}
.app-footer p,.app-footer a{color:#64748b;font-size:14px;line-height:1.8}
.app-footer a:hover{color:#a5b4fc}
.app-footer .friend-links{display:flex;flex-wrap:wrap;gap:10px}
.app-footer .friend-links a{padding:5px 12px;border:1px solid rgba(255,255,255,0.08);border-radius:6px;font-size:13px}
.app-footer .friend-links a:hover{border-color:#818cf8}
.app-footer .footer-bottom{text-align:center;font-size:13px;color:#475569}
.app-footer .footer-bottom a{color:#64748b}
.app-footer .footer-bottom a:hover{color:#a5b4fc}

/* ========== Inner Pages Common ========== */
.app-row{display:flex;flex-wrap:wrap;margin:0 -15px}
.app-main{flex:0 0 66.66%;max-width:66.66%;padding:0 15px}
.app-side{flex:0 0 33.33%;max-width:33.33%;padding:0 15px}

.app-card{background:rgba(30,41,59,0.7);border:1px solid rgba(255,255,255,0.05);border-radius:16px;margin-bottom:24px;overflow:hidden}
.app-card-header{padding:20px 28px;border-bottom:1px solid rgba(255,255,255,0.05)}
.app-card-header h2,.app-card-header h3{margin:0;font-size:18px;font-weight:700;color:#e2e8f0}
.app-card-body{padding:28px}

.app-breadcrumb{padding:18px 0;font-size:14px;color:#64748b}
.app-breadcrumb a{color:#94a3b8}
.app-breadcrumb a:hover{color:#a5b4fc}
.app-breadcrumb span{margin:0 6px;color:#475569}

/* Article List */
.app-article-item{display:flex;gap:20px;padding:20px 0;border-bottom:1px solid rgba(255,255,255,0.05)}
.app-article-item:last-child{border-bottom:none}
.app-article-item .art-thumb{flex-shrink:0;width:200px;height:130px;border-radius:10px;overflow:hidden;background:rgba(15,23,42,0.5)}
.app-article-item .art-thumb img{width:100%;height:100%;object-fit:cover;transition:.4s}
.app-article-item .art-thumb:hover img{transform:scale(1.08)}
.app-article-item .art-info{flex:1;min-width:0}
.app-article-item .art-info h4{font-size:17px;font-weight:600;margin-bottom:8px}
.app-article-item .art-info h4 a{color:#e2e8f0}
.app-article-item .art-info h4 a:hover{color:#a5b4fc}
.app-article-item .art-info .art-desc{font-size:14px;color:#64748b;line-height:1.6;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-bottom:8px}
.app-article-item .art-info .art-meta{font-size:12px;color:#475569}

/* List Item */
.app-list-item{padding:10px 0;border-bottom:1px solid rgba(255,255,255,0.03)}
.app-list-item:last-child{border-bottom:none}
.app-list-item a{display:block;color:#cbd5e1;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.app-list-item a:hover{color:#a5b4fc}
.app-list-item .lt{font-size:12px;color:#475569;margin-top:3px}

/* Tags */
.app-tags{display:flex;flex-wrap:wrap;gap:8px}
.app-tags a{display:inline-block;padding:5px 14px;background:rgba(99,102,241,0.1);color:#94a3b8;border-radius:8px;font-size:13px;transition:.3s}
.app-tags a:hover{background:rgba(99,102,241,0.3);color:#fff}

/* Pagination */
.app-pagination{display:flex;justify-content:center;gap:6px;padding:30px 0 10px;flex-wrap:wrap}
.app-pagination a,.app-pagination span{display:inline-block;padding:8px 14px;border-radius:8px;background:rgba(30,41,59,0.7);color:#94a3b8;font-size:14px;border:1px solid rgba(255,255,255,0.05);transition:.3s}
.app-pagination a:hover{background:rgba(99,102,241,0.2);color:#fff;border-color:rgba(99,102,241,0.3)}
.app-pagination .active span{background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;border-color:transparent}
.app-pagination .disabled span{color:#475569;cursor:not-allowed}

/* Article Detail */
.app-detail{margin-top:86px}
.app-detail-body{font-size:16px;line-height:1.9;color:#cbd5e1;word-wrap:break-word}
.app-detail-body img{max-width:100%;border-radius:10px;margin:20px 0}
.app-detail-body h2,.app-detail-body h3{margin:30px 0 16px;color:#f1f5f9}
.app-detail-body p{margin-bottom:16px}
.app-detail-body a{color:#818cf8}
.app-detail-body blockquote{border-left:4px solid #6366f1;padding:14px 20px;margin:20px 0;background:rgba(99,102,241,0.05);border-radius:0 10px 10px 0;color:#94a3b8}
.app-meta{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:#64748b;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,0.05);margin-bottom:24px}
.app-prev-next{display:flex;gap:20px;padding:20px 0;border-top:1px solid rgba(255,255,255,0.05);margin-top:30px}
.app-prev-next>div{flex:1;min-width:0}
.app-prev-next .lbl{font-size:12px;color:#475569;margin-bottom:4px}
.app-prev-next a{color:#cbd5e1;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;display:block}
.app-prev-next a:hover{color:#a5b4fc}

/* 404 */
.app-404{text-align:center;padding:120px 20px;min-height:60vh;display:flex;flex-direction:column;align-items:center;justify-content:center}
.app-404 .code{font-size:140px;font-weight:900;background:linear-gradient(135deg,#6366f1,#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;line-height:1}
.app-404 .msg{font-size:20px;color:#94a3b8;margin:20px 0 36px}

/* Search */
.app-search-header{position:fixed;top:0;left:0;right:0;background:rgba(15,23,42,0.9);z-index:9998;border-bottom:1px solid rgba(99,102,241,0.1);padding:14px 0;backdrop-filter:blur(16px)}
.app-search-main{padding-top:80px}

/* Tag Header */
.app-tag-header{display:flex;align-items:center;gap:16px;padding-bottom:20px;margin-bottom:20px;border-bottom:1px solid rgba(255,255,255,0.05)}
.app-tag-header .tag-icon{width:52px;height:52px;background:rgba(99,102,241,0.15);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;color:#818cf8;flex-shrink:0}
.app-tag-header h2{font-size:20px;margin:0 0 4px;color:#e2e8f0}
.app-tag-header p{font-size:14px;color:#64748b;margin:0}

/* Search Form */
.app-search-form{display:flex;max-width:560px;margin:0 auto}
.app-search-form input{flex:1;padding:14px 20px;background:rgba(30,41,59,0.7);border:1px solid rgba(255,255,255,0.1);border-radius:12px 0 0 12px;font-size:15px;color:#e2e8f0;outline:none}
.app-search-form input:focus{border-color:#6366f1}
.app-search-form button{padding:14px 30px;background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;border:none;border-radius:0 12px 12px 0;font-size:15px;font-weight:600;cursor:pointer}
.app-search-form button:hover{opacity:0.9}

/* Content body */
.app-content-body{font-size:15px;line-height:1.8;color:#cbd5e1}

/* ========== Responsive ========== */
@media(max-width:992px){
  .app-header .container{height:56px}
  .app-menu-toggle{display:block}
  .app-nav{display:none;position:fixed;top:56px;left:0;right:0;bottom:0;background:#0f172a;flex-direction:column;padding:20px;overflow-y:auto;z-index:9998}
  .app-nav.open{display:flex}
  .app-nav>li>a{font-size:16px;padding:12px 16px}
  .app-nav .dropdown .dropdown-menu{position:static;background:rgba(255,255,255,0.03);box-shadow:none;border-radius:0;padding-left:20px}
  .app-header .header-cta{display:none}
  .app-hero .hero-content h1{font-size:36px}
  .app-features-grid{grid-template-columns:1fr 1fr}
  .app-download-grid{grid-template-columns:1fr}
  .app-footer .footer-grid{grid-template-columns:1fr 1fr}
  .app-main,.app-side{flex:0 0 100%;max-width:100%}
  .app-article-item{flex-direction:column}
  .app-article-item .art-thumb{width:100%;height:180px}
  .app-partner-item img{height:120px}
}

@media(max-width:576px){
  .app-hero .hero-content h1{font-size:28px}
  .app-hero .hero-content .hero-desc{font-size:15px}
  .app-features-grid{grid-template-columns:1fr}
  .app-section{padding:60px 0}
  .app-section .section-header h2{font-size:26px}
  .app-footer .footer-grid{grid-template-columns:1fr}
  .app-cta-banner{margin:0 10px;padding:50px 16px}
  .app-cta-banner h2{font-size:24px}
  .app-partner-item{padding:16px 20px;min-width:120px}
  .app-partner-item img{height:90px}
  .app-search-form{max-width:100%}
}
@media(max-width:768px){.app-nav{flex-wrap:wrap;gap:10px;justify-content:center;padding:12px 14px} .app-nav .app-brand{width:100%;justify-content:center} .app-nav .app-links{flex-wrap:wrap;justify-content:center;gap:4px;width:100%} .app-nav .app-links a{padding:5px 10px;font-size:11px}}