/* === Reset & Base === */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px;background:#0f0f23}
body{font-family:'Noto Sans SC','Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:#1a1a2e;background:#fff;line-height:1.6;overflow-x:hidden}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* === Navbar === */
.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;padding:16px 0;transition:all .3s ease}
.navbar.scrolled{background:rgba(255,255,255,.95);backdrop-filter:blur(20px);box-shadow:0 1px 20px rgba(0,0,0,.08);padding:10px 0}
.nav-container{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px}
.logo-icon{display:flex}
.logo-text{font-size:18px;font-weight:700;color:#1a1a2e}
.navbar:not(.scrolled) .logo-text{color:#fff}
.nav-links{display:flex;gap:32px}
.nav-link{font-size:15px;font-weight:500;color:#64748b;transition:color .3s;position:relative}
.nav-link:hover,.nav-link.active{color:#6366f1}
.nav-link.active::after{content:'';position:absolute;bottom:-4px;left:0;right:0;height:2px;background:#6366f1;border-radius:1px}
.navbar:not(.scrolled) .nav-link{color:rgba(255,255,255,.7)}
.navbar:not(.scrolled) .nav-link:hover,.navbar:not(.scrolled) .nav-link.active{color:#fff}
.navbar:not(.scrolled) .nav-link.active::after{background:#fff}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.nav-toggle span{display:block;width:24px;height:2px;background:#1a1a2e;border-radius:2px;transition:all .3s}
.navbar:not(.scrolled) .nav-toggle span{background:#fff}
.mobile-menu{display:none;position:fixed;top:60px;left:0;right:0;background:rgba(255,255,255,.98);backdrop-filter:blur(20px);padding:20px;z-index:999;flex-direction:column;gap:8px;box-shadow:0 10px 30px rgba(0,0,0,.1)}
.mobile-menu.open{display:flex}
.mobile-link{padding:12px 16px;font-size:16px;font-weight:500;color:#1a1a2e;border-radius:8px;transition:background .3s}
.mobile-link:hover,.mobile-link.active{background:#f1f0ff;color:#6366f1}

/* === Buttons === */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:12px;font-size:15px;font-weight:600;transition:all .3s;cursor:pointer;border:none}
.btn-primary{background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;box-shadow:0 4px 20px rgba(99,102,241,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(99,102,241,.4)}
.btn-outline{background:transparent;color:#6366f1;border:2px solid rgba(99,102,241,.3)}
.btn-outline:hover{background:rgba(99,102,241,.05);border-color:#6366f1}
.btn-lg{padding:16px 32px;font-size:16px;border-radius:14px}
.hero .btn-outline{color:#fff;border-color:rgba(255,255,255,.3)}
.hero .btn-outline:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.5)}

/* === Hero === */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;overflow:hidden;background:#0f0f23}
.hero-bg{position:absolute;inset:0}
#heroCanvas{position:absolute;inset:0;width:100%;height:100%}
.hero-gradient{position:absolute;inset:0;background:radial-gradient(ellipse at 50% 50%,rgba(99,102,241,.15) 0%,transparent 70%)}
.hero-content{position:relative;z-index:2;text-align:center;max-width:800px;padding:0 24px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:50px;font-size:14px;color:rgba(255,255,255,.8);margin-bottom:24px}
.badge-dot{width:8px;height:8px;background:#22c55e;border-radius:50%;animation:pulse-dot 2s infinite}
@keyframes pulse-dot{0%,100%{opacity:1}50%{opacity:.4}}
.hero-title{margin-bottom:24px}
.title-line{display:block;font-size:clamp(32px,6vw,64px);font-weight:800;color:#fff;line-height:1.2}
.gradient-text{background:linear-gradient(135deg,#6366f1,#a78bfa,#ec4899);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:18px;color:rgba(255,255,255,.6);max-width:600px;margin:0 auto 32px;line-height:1.8}
.hero-actions{display:flex;gap:16px;justify-content:center;margin-bottom:48px}
.hero-stats{display:flex;gap:32px;justify-content:center;align-items:center}
.stat-item{text-align:center}
.stat-number{font-size:32px;font-weight:800;color:#fff}
.stat-suffix{font-size:18px;font-weight:600;color:#a78bfa}
.stat-label{display:block;font-size:13px;color:rgba(255,255,255,.5);margin-top:4px}
.stat-divider{width:1px;height:40px;background:rgba(255,255,255,.15)}
.hero-scroll-indicator{position:absolute;bottom:32px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;color:rgba(255,255,255,.4);font-size:12px;animation:float 3s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(-10px)}}
.scroll-mouse{width:24px;height:38px;border:2px solid rgba(255,255,255,.3);border-radius:12px;position:relative}
.scroll-wheel{width:3px;height:8px;background:rgba(255,255,255,.5);border-radius:2px;position:absolute;top:6px;left:50%;transform:translateX(-50%);animation:scroll-anim 2s infinite}
@keyframes scroll-anim{0%{opacity:1;transform:translateX(-50%) translateY(0)}100%{opacity:0;transform:translateX(-50%) translateY(12px)}}

/* === Scroll Reveal === */
.scroll-reveal{opacity:0;transform:translateY(40px);transition:opacity .8s ease,transform .8s ease}
.scroll-reveal.revealed{opacity:1;transform:translateY(0)}
.delay-1{transition-delay:.1s}
.delay-2{transition-delay:.2s}
.delay-3{transition-delay:.3s}
.delay-4{transition-delay:.4s}

/* === Section Common === */
.section-header{text-align:center;margin-bottom:64px}
.section-tag{display:inline-block;padding:6px 16px;background:linear-gradient(135deg,rgba(99,102,241,.1),rgba(139,92,246,.1));color:#6366f1;font-size:14px;font-weight:600;border-radius:50px;margin-bottom:16px}
.section-title{font-size:clamp(28px,4vw,42px);font-weight:800;color:#1a1a2e;margin-bottom:16px}
.section-desc{font-size:17px;color:#64748b;max-width:600px;margin:0 auto}

/* === Features === */
.features{padding:120px 0;background:#fafafe}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:#fff;border-radius:20px;padding:32px;transition:all .4s ease;border:1px solid #f0f0f5}
.feature-card:hover{transform:translateY(-8px);box-shadow:0 20px 60px rgba(0,0,0,.08);border-color:transparent}
.feature-icon{width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.fi-1{background:rgba(99,102,241,.1);color:#6366f1}
.fi-2{background:rgba(139,92,246,.1);color:#8b5cf6}
.fi-3{background:rgba(236,72,153,.1);color:#ec4899}
.fi-4{background:rgba(245,158,11,.1);color:#f59e0b}
.fi-5{background:rgba(34,197,94,.1);color:#22c55e}
.fi-6{background:rgba(6,182,212,.1);color:#06b6d4}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:8px;color:#1a1a2e}
.feature-card p{font-size:14px;color:#64748b;line-height:1.7}

/* === Showcase === */
.showcase,.security{padding:120px 0}
.security{background:#fafafe}
.showcase-row{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.showcase-row.reverse{direction:rtl}
.showcase-row.reverse>*{direction:ltr}
.showcase-title{font-size:clamp(28px,4vw,40px);font-weight:800;color:#1a1a2e;margin-bottom:16px;line-height:1.3}
.showcase-desc{font-size:16px;color:#64748b;line-height:1.8;margin-bottom:24px}
.showcase-list{display:flex;flex-direction:column;gap:12px}
.showcase-list li{font-size:15px;color:#475569;display:flex;align-items:center;gap:8px}
.showcase-card{background:#1a1a2e;border-radius:20px;overflow:hidden;box-shadow:0 25px 80px rgba(0,0,0,.15)}
.card-header{padding:16px 20px;display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.08)}
.card-dots{display:flex;gap:6px}
.card-dots span{width:10px;height:10px;border-radius:50%}
.card-dots span:nth-child(1){background:#ff5f57}
.card-dots span:nth-child(2){background:#febc2e}
.card-dots span:nth-child(3){background:#28c840}
.card-header>span{color:rgba(255,255,255,.5);font-size:13px}
.card-body{padding:20px}
.backup-item{display:grid;grid-template-columns:32px 1fr auto;gap:12px;align-items:center;padding:14px 16px;border-radius:12px;margin-bottom:8px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06)}
.backup-item.active{background:rgba(99,102,241,.1);border-color:rgba(99,102,241,.2)}
.backup-icon{width:32px;height:32px;border-radius:8px;background:rgba(255,255,255,.1)}
.backup-icon.pulse{background:rgba(99,102,241,.3);animation:pulse-dot 2s infinite}
.backup-icon.done-icon{background:rgba(34,197,94,.2)}
.bk-name{display:block;font-size:14px;color:#fff;font-weight:500}
.bk-status{display:block;font-size:12px;color:rgba(255,255,255,.4);margin-top:2px}
.bk-status.success{color:#22c55e}
.backup-progress{grid-column:1/-1;height:4px;background:rgba(255,255,255,.1);border-radius:2px;overflow:hidden}
.progress-bar{height:100%;background:linear-gradient(90deg,#6366f1,#8b5cf6);border-radius:2px;transition:width 2s ease}

/* === Security Shield === */
.security-shield{position:relative;width:280px;height:280px;margin:0 auto;display:flex;align-items:center;justify-content:center}
.shield-ring{position:absolute;border-radius:50%;border:2px solid rgba(99,102,241,.15)}
.r1{width:100%;height:100%;animation:spin1 20s linear infinite}
.r2{width:75%;height:75%;border-color:rgba(139,92,246,.2);animation:spin1 15s linear infinite reverse}
.r3{width:50%;height:50%;border-color:rgba(236,72,153,.15);animation:spin1 10s linear infinite}
@keyframes spin1{from{transform:rotate(0)}to{transform:rotate(360deg)}}
.shield-center{z-index:2;width:80px;height:80px;background:rgba(99,102,241,.1);border-radius:50%;display:flex;align-items:center;justify-content:center}


/* === CTA === */
.cta{padding:120px 0;background:linear-gradient(135deg,#0f0f23,#1a1040)}
.cta-content{text-align:center}
.cta-title{font-size:clamp(28px,4vw,42px);font-weight:800;color:#fff;margin-bottom:16px}
.cta-desc{font-size:17px;color:rgba(255,255,255,.6);margin-bottom:32px}

/* === Footer === */
.footer{background:#0f0f23;padding:30px 0 20px;border-top:1px solid rgba(255,255,255,.06)}
.footer-content{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:24px;margin-bottom:20px}
.footer-desc{color:rgba(255,255,255,.4);font-size:14px;margin-top:12px}
.footer .logo-text{color:#fff}
.footer-links h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-links a{display:block;color:rgba(255,255,255,.4);font-size:14px;margin-bottom:10px;transition:color .3s}
.footer-links a:hover{color:#6366f1}
.footer-bottom{border-top:1px solid rgba(255,255,255,.06);padding-top:16px;text-align:center}
.footer-bottom p{color:rgba(255,255,255,.3);font-size:13px}

/* === Download Page === */
.page-hero{padding:140px 0 80px;background:linear-gradient(135deg,#0f0f23,#1a1040);text-align:center}
.page-hero h1{font-size:clamp(28px,4vw,42px);font-weight:800;color:#fff;margin-bottom:12px}
.page-hero p{font-size:17px;color:rgba(255,255,255,.6)}
.download-section{padding:80px 0;background:#0f0f23}
.download-card{max-width:600px;margin:0 auto;background:rgba(255,255,255,.06);border-radius:24px;padding:48px;text-align:center;box-shadow:0 20px 60px rgba(0,0,0,.2);border:1px solid rgba(255,255,255,.08)}
.download-card h2{font-size:24px;font-weight:700;margin-bottom:8px;color:#fff}
.download-card .version-info{color:rgba(255,255,255,.5);font-size:15px;margin-bottom:24px}
.download-card .file-size{display:inline-block;padding:6px 16px;background:rgba(99,102,241,.15);color:#a5b4fc;border-radius:50px;font-size:13px;font-weight:600;margin-bottom:24px}
.download-card .btn{width:100%;justify-content:center}
.download-note{max-width:600px;margin:24px auto 0;padding:20px;background:rgba(255,255,255,.04);border-radius:16px;text-align:left;border:1px solid rgba(255,255,255,.06)}
.download-note h4{font-size:15px;font-weight:600;margin-bottom:8px;color:#fff}
.download-note ul{padding-left:20px}
.download-note li{font-size:14px;color:rgba(255,255,255,.5);margin-bottom:4px;list-style:disc}

/* === History Page === */
.history-section{padding:80px 0;background:#0f0f23}
.version-timeline{max-width:800px;margin:0 auto}
.version-item{background:rgba(255,255,255,.06);border-radius:20px;padding:32px;margin-bottom:20px;border:1px solid rgba(255,255,255,.08);transition:all .3s}
.version-item:hover{box-shadow:0 10px 40px rgba(99,102,241,.1)}
.version-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;flex-wrap:wrap;gap:12px}
.version-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;border-radius:50px;font-size:14px;font-weight:600}
.version-tag.latest::after{content:'最新';background:rgba(255,255,255,.2);padding:2px 8px;border-radius:50px;font-size:11px;margin-left:4px}
.version-date{color:rgba(255,255,255,.4);font-size:14px}
.version-title{font-size:18px;font-weight:600;color:#fff;margin-bottom:12px}
.version-details{font-size:14px;color:rgba(255,255,255,.5);line-height:1.8}
.version-details h4{font-size:14px;font-weight:600;color:rgba(255,255,255,.7);margin:12px 0 6px}
.version-details ul{padding-left:20px}
.version-details li{margin-bottom:4px;list-style:disc}
.version-download{margin-top:16px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.version-download .file-size{color:rgba(255,255,255,.4);font-size:13px}
.loading-spinner{text-align:center;padding:60px;color:rgba(255,255,255,.5);font-size:15px}

/* === Responsive === */
@media(max-width:768px){
.nav-links{display:none}
.nav-toggle{display:flex}
.features-grid{grid-template-columns:1fr}
.showcase-row,.showcase-row.reverse{grid-template-columns:1fr;gap:40px}
.showcase-row.reverse{direction:ltr}
.hero-stats{flex-direction:column;gap:16px}
.stat-divider{width:40px;height:1px}
.hero-actions{flex-direction:column;align-items:center}
.footer-content{grid-template-columns:1fr;gap:24px}
.version-header{flex-direction:column;align-items:flex-start}
}
@media(max-width:480px){
.title-line{font-size:28px}
.hero-desc{font-size:15px}
.feature-card{padding:24px}
.download-card{padding:32px;margin:0 12px}
}