:root {
            --bg-deep:#080c1a;
            --bg-elevated:rgba(255,255,255,0.03);
            --bg-elevated-hover:rgba(255,255,255,0.06);
            --border-subtle:rgba(255,255,255,0.06);
            --border-active:rgba(0,212,255,0.35);
            --text-primary:#e8f0f8;
            --text-secondary:rgba(255,255,255,0.55);
            --text-tertiary:rgba(255,255,255,0.35);
            --text-muted:rgba(255,255,255,0.2);
            --accent-cyan:#00d4ff;
            --accent-blue:#4a9eff;
            --accent-purple:#7b61ff;
            --accent-green:#4ade80;
            --accent-red:#f87171;
            --accent-yellow:#fbbf24;
            --gradient-primary:linear-gradient(135deg,#00d4ff,#4a9eff);
            --gradient-logo:linear-gradient(135deg,#00d4ff,#7b61ff);
            --gradient-text-hero:linear-gradient(135deg,#ffffff 20%,#00d4ff 100%);
            --shadow-card-hover:0 20px 60px rgba(0,0,0,0.45);
            --shadow-btn-glow:0 10px 50px rgba(0,212,255,0.35);
            --radius-card:20px;
            --radius-btn:40px;
            --transition-fast:0.25s ease;
            --transition-smooth:0.4s cubic-bezier(0.25,0.46,0.45,0.94);
            --font-sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
            --font-mono:'SF Mono','Cascadia Code','Consolas','JetBrains Mono',monospace;
        }
        *,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
        html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
        body{font-family:var(--font-sans);background:var(--bg-deep);color:var(--text-primary);overflow-x:hidden;min-height:100vh;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}
        img,svg{display:block;max-width:100%;height:auto}
        a{color:inherit;text-decoration:none;transition:color var(--transition-fast)}
        button{font-family:inherit;cursor:pointer;border:none;background:none}
        #particle-canvas{position:fixed;top:0;left:0;width:100%;height:100%;z-index:0;pointer-events:none;background:radial-gradient(ellipse at 50% 0%,#0a1025 0%,var(--bg-deep) 65%)}
        .site-wrapper{position:relative;z-index:1;max-width:1240px;margin:0 auto;padding:0 24px}
        header{display:flex;justify-content:space-between;align-items:center;padding:18px 0;border-bottom:1px solid rgba(0,212,255,0.07);position:relative;z-index:10}
        .logo-wrapper{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
        .logo-wrapper svg{display:block;width:38px;height:38px;transition:transform var(--transition-smooth)}
        .logo-wrapper:hover svg{transform:rotate(-3deg) scale(1.05)}
        .logo-text{font-size:24px;font-weight:700;letter-spacing:1.5px;background:var(--gradient-logo);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
        .logo-text span{font-size:11px;font-weight:400;-webkit-text-fill-color:rgba(255,255,255,0.35);background:none;margin-left:4px;letter-spacing:2px}
        nav{display:flex;align-items:center;gap:24px}
        nav a{color:rgba(255,255,255,0.6);text-decoration:none;font-size:14px;font-weight:400;transition:color var(--transition-fast),border-color var(--transition-fast);padding:4px 0;border-bottom:2px solid transparent;letter-spacing:0.3px;white-space:nowrap}
        nav a:hover,nav a.active{color:var(--accent-cyan);border-bottom-color:var(--accent-cyan)}
        .nav-dropdown{position:relative;display:flex;align-items:center}
        .nav-dropdown-btn{color:rgba(255,255,255,0.6);font-size:14px;font-weight:400;padding:4px 0;letter-spacing:0.3px;border-bottom:2px solid transparent;transition:color var(--transition-fast);display:flex;align-items:center;gap:4px;cursor:pointer}
        .nav-dropdown-btn:hover{color:var(--accent-cyan)}
        .dropdown-arrow{font-size:10px;transition:transform var(--transition-fast)}
        .nav-dropdown.dropdown-open .dropdown-arrow{transform:rotate(180deg)}
        .nav-dropdown-content{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);min-width:180px;background:rgba(10,16,35,0.97);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(0,212,255,0.12);border-radius:14px;padding:8px 0;opacity:0;visibility:hidden;pointer-events:none;transition:opacity var(--transition-fast),transform var(--transition-fast),visibility var(--transition-fast);box-shadow:0 20px 50px rgba(0,0,0,0.5);z-index:50}
        .nav-dropdown.dropdown-open .nav-dropdown-content{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(6px)}
        .nav-dropdown-content a{display:block;padding:10px 18px;font-size:13px;color:rgba(255,255,255,0.6);border-bottom:none!important;transition:background var(--transition-fast),color var(--transition-fast)}
        .nav-dropdown-content a:hover{background:rgba(0,212,255,0.08);color:var(--accent-cyan)}
        .nav-cta{background:var(--gradient-primary);color:#080c1a!important;padding:8px 22px!important;border-radius:var(--radius-btn);font-weight:600;border-bottom:none!important;transition:transform var(--transition-fast),box-shadow var(--transition-fast);font-size:14px!important;-webkit-text-fill-color:#080c1a!important;letter-spacing:0.3px}
        .nav-cta:hover{transform:scale(1.05);box-shadow:0 0 30px rgba(0,212,255,0.3)}
        .mobile-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:4px;z-index:100}
        .mobile-toggle span{display:block;width:26px;height:2.5px;background:rgba(255,255,255,0.7);border-radius:2px;transition:all 0.3s ease}
        main{padding:10px 0 0}

        /* Hero */
        .changelog-hero{display:grid;grid-template-columns:1.1fr 0.9fr;gap:40px;align-items:center;padding:30px 0 40px;min-height:64vh}
        .changelog-hero-content h1{font-size:44px;font-weight:800;line-height:1.1;margin-bottom:10px;background:var(--gradient-text-hero);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-0.5px}
        .changelog-hero-content .subtitle{font-size:14px;color:rgba(255,255,255,0.45);font-weight:400;margin-bottom:6px;letter-spacing:4px;text-transform:uppercase}
        .changelog-hero-content .tagline{font-size:19px;color:rgba(255,255,255,0.85);font-weight:400;margin-bottom:16px;line-height:1.7}
        .changelog-hero-content .description{font-size:15px;color:var(--text-secondary);line-height:1.9;margin-bottom:24px;max-width:560px}
        .changelog-hero-content .description strong{color:var(--accent-cyan);font-weight:500}
        .changelog-hero-buttons{display:flex;gap:14px;flex-wrap:wrap}
        .btn-primary{background:var(--gradient-primary);color:#080c1a;padding:13px 30px;border-radius:var(--radius-btn);font-weight:600;font-size:15px;border:none;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:10px;transition:transform var(--transition-smooth),box-shadow var(--transition-smooth);-webkit-text-fill-color:#080c1a;letter-spacing:0.2px;position:relative;overflow:hidden}
        .btn-primary::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.25),transparent);transition:left 0.6s ease}
        .btn-primary:hover::before{left:100%}
        .btn-primary:hover{transform:translateY(-3px);box-shadow:var(--shadow-btn-glow)}
        .btn-secondary{background:rgba(255,255,255,0.06);color:var(--text-primary);padding:13px 26px;border-radius:var(--radius-btn);font-weight:500;font-size:15px;border:1px solid rgba(255,255,255,0.12);cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:10px;transition:background var(--transition-fast),border-color var(--transition-fast),transform var(--transition-fast)}
        .btn-secondary:hover{background:rgba(255,255,255,0.12);border-color:rgba(0,212,255,0.4);transform:translateY(-2px)}
        .changelog-hero-visual{display:flex;justify-content:center;align-items:center}
        .version-badge-card{width:100%;max-width:340px;background:rgba(10,16,35,0.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(0,212,255,0.15);border-radius:24px;padding:28px 22px;text-align:center;box-shadow:0 30px 80px rgba(0,0,0,0.6),0 0 50px rgba(0,212,255,0.04)}
        .badge-version{font-size:52px;font-weight:800;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1;margin-bottom:4px}
        .badge-codename{font-size:14px;color:var(--text-tertiary);margin-bottom:16px;font-family:var(--font-mono)}
        .badge-details{display:flex;flex-direction:column;gap:8px;text-align:left}
        .badge-detail-item{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary)}
        .badge-detail-icon{font-size:16px;flex-shrink:0}
        .glow-line{width:100%;height:1px;background:linear-gradient(90deg,transparent,rgba(0,212,255,0.15),transparent);margin:10px 0 20px}

        /* 版本时间线 */
        .timeline-section{padding:30px 0 20px}
        .section-title{font-size:30px;font-weight:700;margin-bottom:10px;background:linear-gradient(135deg,#ffffff,#00d4ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-0.3px}
        .section-sub{color:rgba(255,255,255,0.4);font-size:15px;font-weight:300;margin-bottom:28px;letter-spacing:0.5px}
        .timeline{position:relative;margin-top:20px;padding-left:32px}
        .timeline::before{content:'';position:absolute;left:10px;top:0;bottom:0;width:2px;background:rgba(0,212,255,0.2)}
        .timeline-item{position:relative;margin-bottom:28px}
        .timeline-item::before{content:'';position:absolute;left:-27px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--accent-cyan);box-shadow:0 0 14px rgba(0,212,255,0.6)}
        .timeline-item.major::before{background:var(--accent-purple);box-shadow:0 0 14px rgba(123,97,255,0.6)}
        .timeline-item.security::before{background:var(--accent-green);box-shadow:0 0 14px rgba(74,222,128,0.6)}
        .version-header{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:6px}
        .version-number{font-size:18px;font-weight:700;color:#fff;font-family:var(--font-mono)}
        .version-date{font-size:12px;color:var(--text-tertiary);font-family:var(--font-mono)}
        .version-type-badge{font-size:10px;padding:2px 10px;border-radius:12px;font-weight:600;letter-spacing:0.5px}
        .type-major{background:rgba(123,97,255,0.15);color:var(--accent-purple)}
        .type-feature{background:rgba(0,212,255,0.15);color:var(--accent-cyan)}
        .type-security{background:rgba(74,222,128,0.15);color:var(--accent-green)}
        .type-bugfix{background:rgba(251,191,36,0.15);color:var(--accent-yellow)}
        .version-desc{font-size:13px;color:var(--text-secondary);line-height:1.8}
        .version-changes{list-style:none;margin-top:8px;display:flex;flex-direction:column;gap:4px}
        .version-changes li{font-size:12px;color:var(--text-tertiary);display:flex;align-items:flex-start;gap:8px;line-height:1.6}
        .change-icon{font-size:13px;flex-shrink:0;margin-top:2px}
        .change-add{color:var(--accent-green)}
        .change-fix{color:var(--accent-yellow)}
        .change-security{color:var(--accent-cyan)}

        /* 最新版本亮点 */
        .latest-highlights{padding:30px 0;border-top:1px solid rgba(255,255,255,0.04);margin-top:20px}
        .highlights-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:8px}
        .highlight-card{background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:16px;padding:20px 18px;transition:border-color var(--transition-fast),transform var(--transition-smooth)}
        .highlight-card:hover{border-color:rgba(0,212,255,0.2);transform:translateY(-3px)}
        .highlight-badge{display:inline-block;font-size:10px;padding:2px 10px;border-radius:12px;font-weight:600;letter-spacing:0.5px;margin-bottom:10px;background:rgba(0,212,255,0.12);color:var(--accent-cyan)}
        .highlight-icon{font-size:28px;margin-bottom:8px}
        .highlight-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:6px}
        .highlight-desc{font-size:12px;color:var(--text-secondary);line-height:1.7}

        /* 安全修复记录 */
        .security-fixes{padding:30px 0;border-top:1px solid rgba(255,255,255,0.04);margin-top:20px}
        .fix-list{display:flex;flex-direction:column;gap:10px;margin-top:8px}
        .fix-item{background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:12px;padding:14px 18px;display:flex;align-items:flex-start;gap:12px;transition:border-color var(--transition-fast)}
        .fix-item:hover{border-color:rgba(74,222,128,0.3)}
        .fix-icon{font-size:20px;flex-shrink:0;margin-top:2px}
        .fix-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:4px}
        .fix-desc{font-size:12px;color:var(--text-tertiary);line-height:1.6}
        .fix-severity{font-size:10px;padding:2px 8px;border-radius:10px;font-weight:600;margin-left:8px}
        .severity-critical{background:rgba(248,113,113,0.15);color:var(--accent-red)}
        .severity-high{background:rgba(251,191,36,0.15);color:var(--accent-yellow)}
        .severity-medium{background:rgba(0,212,255,0.15);color:var(--accent-cyan)}

        /* 更新频率统计 */
        .update-stats{padding:30px 0;border-top:1px solid rgba(255,255,255,0.04);margin-top:20px}
        .stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin-top:8px}
        .stat-card{background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:14px;padding:18px 14px;text-align:center;transition:border-color var(--transition-fast)}
        .stat-card:hover{border-color:rgba(0,212,255,0.2)}
        .stat-number{font-size:30px;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1.2}
        .stat-label{font-size:12px;color:var(--text-tertiary);margin-top:4px}

        /* 前瞻路线图 */
        .roadmap{padding:30px 0;border-top:1px solid rgba(255,255,255,0.04);margin-top:20px}
        .roadmap-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:8px}
        .roadmap-card{background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:16px;padding:22px 18px;text-align:center;transition:border-color var(--transition-fast),transform var(--transition-smooth)}
        .roadmap-card:hover{border-color:rgba(123,97,255,0.3);transform:translateY(-3px)}
        .roadmap-icon{font-size:32px;margin-bottom:8px}
        .roadmap-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:6px}
        .roadmap-desc{font-size:12px;color:var(--text-secondary);line-height:1.7;margin-bottom:10px}
        .roadmap-status{font-size:11px;padding:4px 12px;border-radius:16px;font-weight:500}
        .status-planned{background:rgba(251,191,36,0.12);color:var(--accent-yellow)}
        .status-dev{background:rgba(0,212,255,0.12);color:var(--accent-cyan)}
        .status-research{background:rgba(123,97,255,0.12);color:var(--accent-purple)}

        /* 订阅通知 */
        .subscribe-box{padding:30px 0;border-top:1px solid rgba(255,255,255,0.04);margin-top:20px}
        .subscribe-inner{background:var(--bg-elevated);border:1px solid rgba(0,212,255,0.2);border-radius:16px;padding:22px 24px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:8px}
        .subscribe-icon{font-size:36px}
        .subscribe-text{flex:1;min-width:200px}
        .subscribe-title{font-size:16px;font-weight:600;color:#fff;margin-bottom:4px}
        .subscribe-desc{font-size:12px;color:var(--text-tertiary)}
        .subscribe-btn{background:var(--gradient-primary);color:#080c1a;padding:10px 22px;border-radius:30px;font-weight:600;font-size:13px;text-decoration:none;transition:transform var(--transition-fast),box-shadow var(--transition-fast);white-space:nowrap}
        .subscribe-btn:hover{transform:scale(1.05);box-shadow:var(--shadow-btn-glow)}

        /* FAQ */
        .faq-section{padding:30px 0;border-top:1px solid rgba(255,255,255,0.04);margin-top:20px}
        .faq-list{display:flex;flex-direction:column;gap:10px;margin-top:8px}
        .faq-item{background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:12px;padding:14px 18px;transition:border-color var(--transition-fast)}
        .faq-item:hover{border-color:rgba(0,212,255,0.2)}
        .faq-question{font-size:14px;font-weight:600;color:#fff;margin-bottom:6px;display:flex;align-items:center;gap:8px}
        .faq-answer{font-size:13px;color:var(--text-secondary);line-height:1.7}

        /* 底部CTA */
        .bottom-cta{padding:30px 0 40px;border-top:1px solid rgba(255,255,255,0.04);margin-top:20px}
        .cta-inner{background:linear-gradient(135deg,rgba(0,212,255,0.06),rgba(123,97,255,0.06));border:1px solid rgba(0,212,255,0.15);border-radius:24px;padding:32px 36px;text-align:center}
        .cta-inner h2{font-size:22px;font-weight:700;color:#fff;margin-bottom:8px}
        .cta-inner p{font-size:14px;color:var(--text-secondary);line-height:1.8;margin-bottom:18px}
        .cta-buttons{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

        footer{padding:40px 0 20px;border-top:1px solid rgba(255,255,255,0.04);margin-top:10px}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,0.05)}
        .footer-brand .logo-wrapper{margin-bottom:12px}
        .footer-brand p{color:var(--text-tertiary);font-size:13px;line-height:1.8;max-width:280px}
        .footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px;letter-spacing:0.5px}
        .footer-col a{display:block;color:rgba(255,255,255,0.35);text-decoration:none;font-size:13px;line-height:2.4;transition:color var(--transition-fast);letter-spacing:0.2px}
        .footer-col a:hover{color:var(--accent-cyan)}
        .footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:20px;flex-wrap:wrap;gap:12px}
        .footer-bottom .copy{color:var(--text-muted);font-size:12px;letter-spacing:0.3px}
        .footer-social{display:flex;gap:14px}
        .footer-social a{color:rgba(255,255,255,0.25);text-decoration:none;font-size:16px;transition:color var(--transition-fast),transform var(--transition-fast);display:inline-block}
        .footer-social a:hover{color:var(--accent-cyan);transform:translateY(-2px)}

        @media(max-width:992px){
            .changelog-hero{grid-template-columns:1fr;gap:35px;text-align:center;min-height:auto}
            .changelog-hero-content .description{max-width:100%;margin-left:auto;margin-right:auto}
            .changelog-hero-buttons{justify-content:center}
            .changelog-hero-content h1{font-size:36px}
            .version-badge-card{max-width:300px;margin:0 auto}
            .footer-grid{grid-template-columns:1fr 1fr}
            .footer-brand p{max-width:100%}
            .cta-inner{padding:24px 20px}
        }
        @media(max-width:768px){
            nav{position:fixed;top:0;right:-100%;width:75%;max-width:320px;height:100vh;background:rgba(8,12,26,0.98);flex-direction:column;padding:80px 24px 40px;gap:12px;transition:right 0.4s cubic-bezier(0.25,0.46,0.45,0.94);border-left:1px solid rgba(0,212,255,0.08);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);align-items:flex-start;overflow-y:auto;z-index:90}
            nav.open{right:0}
            .mobile-toggle{display:flex;z-index:100}
            .mobile-toggle.open span:nth-child(1){transform:rotate(45deg) translate(6px,6px)}
            .mobile-toggle.open span:nth-child(2){opacity:0}
            .mobile-toggle.open span:nth-child(3){transform:rotate(-45deg) translate(6px,-6px)}
            nav a{font-size:16px;padding:6px 0}
            .nav-cta{margin-top:8px}
            .nav-dropdown{flex-direction:column;align-items:flex-start;width:100%}
            .nav-dropdown-btn{font-size:16px;padding:6px 0}
            .nav-dropdown-content{position:static;transform:none;min-width:100%;opacity:1;visibility:visible;pointer-events:auto;background:none;border:none;padding:0 0 0 16px;box-shadow:none;display:none}
            .nav-dropdown.dropdown-open .nav-dropdown-content{display:block;transform:none}
            .nav-dropdown-content a{padding:8px 0;font-size:14px}
            .changelog-hero-content h1{font-size:30px}
            .footer-grid{grid-template-columns:1fr;gap:22px}
            .footer-bottom{flex-direction:column;text-align:center}
            .section-title{font-size:24px}
            .timeline{padding-left:24px}
            .timeline-item::before{left:-20px}
            .cta-inner h2{font-size:19px}
            .subscribe-inner{flex-direction:column;text-align:center}
        }
        @media(max-width:480px){
            .site-wrapper{padding:0 14px}
            .changelog-hero-content h1{font-size:26px}
            .changelog-hero-content .tagline{font-size:16px}
            .version-badge-card{max-width:100%}
            .btn-primary,.btn-secondary{padding:12px 20px;font-size:14px;width:100%;justify-content:center}
            .changelog-hero-buttons{flex-direction:column;align-items:center;gap:10px}
            .stats-grid{grid-template-columns:1fr 1fr}
            .roadmap-grid{grid-template-columns:1fr}
            .logo-text{font-size:20px}
            .logo-text span{font-size:9px}
        }
        @media(prefers-reduced-motion:reduce){
            *,*::before,*::after{animation-duration:0.01ms!important;animation-iteration-count:1!important;transition-duration:0.01ms!important;scroll-behavior:auto!important}
            .btn-primary::before{display:none}
        }