:root{--bg-color: #ffffff;--text-color: #1a1a1a;--primary-color: #0066cc;--header-bg: rgba(255, 255, 255, .8);--section-bg: #f9f9f9;--border-color: #e5e5e5}[data-theme=dark]{--bg-color: #121212;--text-color: #e0e0e0;--primary-color: #4da6ff;--header-bg: rgba(18, 18, 18, .8);--section-bg: #1e1e1e;--border-color: #333333}[data-theme=dark] .logo-img,[data-theme=dark] .req-icon img,[data-theme=dark] .platform-icon img{filter:invert(1) hue-rotate(180deg)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji",Segoe UI Symbol;background-color:var(--bg-color);color:var(--text-color);margin:0;line-height:1.6;transition:background-color .3s,color .3s}html{scroll-behavior:smooth}main{padding-top:60px}a{color:var(--primary-color);text-decoration:none;transition:opacity .2s}a:hover{opacity:.8}h1,h2,h3{line-height:1.2;margin-bottom:1rem}button{cursor:pointer;font-family:inherit}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.requirements-list{display:flex;flex-direction:column;gap:2rem}.req-item{display:flex;align-items:center;gap:1.5rem;background-color:var(--bg-color);padding:1.5rem;border-radius:12px;box-shadow:0 4px 6px #0000000d;transition:transform .2s}.req-item:hover{transform:translateY(-2px)}.req-icon{flex-shrink:0;width:60px;height:60px;border-radius:50%;background-color:var(--section-bg);display:flex;align-items:center;justify-content:center;overflow:hidden;border:2px solid var(--primary-color)}.req-icon img{width:80%;height:80%;object-fit:contain}.req-text{font-size:1.1rem;font-weight:500}.download-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;width:100%}.download-card{background-color:var(--header-bg);border:1px solid var(--border-color);border-radius:16px;padding:2rem;display:flex;flex-direction:column;align-items:center;text-align:center;transition:transform .2s,box-shadow .2s}.download-card:hover{transform:translateY(-4px);box-shadow:0 10px 20px #0000001a;border-color:var(--primary-color)}.platform-icon{width:64px;height:64px;margin-bottom:1.5rem}.platform-icon img{width:100%;height:100%;object-fit:contain}.download-card h3{margin:0 0 .5rem;font-size:1.5rem}.version-info{margin:0 0 2rem;color:var(--text-color);opacity:.7;font-size:.9rem}.download-btn{background-color:var(--primary-color);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;font-weight:600;width:100%;margin-bottom:1.5rem;transition:background-color .2s}.download-btn:hover{filter:brightness(1.1)}.card-links{display:flex;gap:.5rem;font-size:.85rem;color:var(--text-color);opacity:.7}.card-links a{text-decoration:underline;color:inherit}.card-links a:hover{color:var(--primary-color)}.header{position:fixed;top:0;left:0;width:100%;background-color:var(--header-bg);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-color);z-index:1000;height:60px;display:flex;align-items:center}.header-content{display:flex;justify-content:space-between;align-items:center;width:100%}.logo-link{display:flex;align-items:center;gap:.75rem;text-decoration:none}.logo-img{height:32px;width:auto;display:block}.logo{font-weight:700;font-size:1.2rem;color:var(--text-color);line-height:1;padding-top:3px}.nav{display:flex;gap:1.5rem}.nav a{color:var(--text-color);font-weight:500;font-size:.95rem}.nav a:hover{color:var(--primary-color)}.theme-toggle{background:none;border:none;font-size:1.2rem;padding:.5rem;border-radius:50%;transition:background-color .2s;color:var(--text-color);display:flex;align-items:center;justify-content:center;cursor:pointer}.theme-toggle:hover{background-color:#8080801a}@media(max-width:768px){.nav{display:none}}.footer{padding:2rem 0;background-color:var(--section-bg);text-align:center;border-top:1px solid var(--border-color);margin-top:auto}.footer p{color:var(--text-color);opacity:.7;font-size:.9rem}.section{padding:5rem 0;min-height:50vh;display:flex;flex-direction:column;justify-content:center}.section-alt{background-color:var(--section-bg)}.section-title{font-size:2rem;margin-bottom:2rem;color:var(--primary-color)}.section-content{font-size:1.1rem;max-width:800px}