:root{--bg:#0d1117;--card:#161b22;--accent:#00d4aa;--text:#e6edf3;--muted:#8b949e;--border:#30363d}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:system-ui,sans-serif;min-height:100vh;display:flex;flex-direction:column}main{flex:1}a{color:var(--accent);text-decoration:none}.navbar{background:rgba(13,17,23,.95);border-bottom:1px solid var(--border);padding:12px 0;position:sticky;top:0;z-index:100}.navbar .container{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}.navbar-brand{font-weight:700;font-size:1.1rem;color:var(--accent)}.nav-links{display:flex;gap:4px}.nav-link{color:var(--muted);padding:8px 14px;border-radius:6px;font-size:.9rem}.nav-link:hover{color:var(--text)}.btn{display:inline-flex;padding:10px 18px;border-radius:8px;font-weight:600;border:none;cursor:pointer;font-size:.9rem}.btn-accent{background:var(--accent);color:#0d1117}.btn-outline{border:1px solid var(--border);color:var(--text);background:transparent}.container{max-width:1000px;margin:0 auto;padding:0 20px}.hero{padding:80px 0;background:linear-gradient(135deg,#0d4a3e,#0a2e28)}.hero h1{font-size:clamp(2rem,5vw,3rem);font-weight:800;margin-bottom:16px}.hero h1 span{color:var(--accent)}.hero p{color:var(--muted);max-width:400px;margin-bottom:24px}.section{padding:60px 0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:24px}.card h3{margin-bottom:8px}.card p{color:var(--muted);font-size:.95rem}.modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,.75);align-items:center;justify-content:center;z-index:200;padding:20px}.modal.show{display:flex}.modal-box{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:32px;width:100%;max-width:380px}.form-input{width:100%;padding:14px;border-radius:8px;border:1px solid var(--border);background:#0d1117;color:var(--text);margin-bottom:14px}.file-list{list-style:none;padding:0}.file-list li{display:flex;justify-content:space-between;padding:14px;border-bottom:1px solid var(--border)}.locked{opacity:.4}.page-404{text-align:center;padding:100px 0}.page-404 h1{font-size:clamp(4rem,12vw,6rem);color:var(--accent);font-weight:800}footer{background:var(--card);border-top:1px solid var(--border);padding:24px 0;margin-top:auto;text-align:center;color:var(--muted);font-size:.9rem}@media(max-width:600px){.navbar .container{flex-direction:column;align-items:flex-start}}