:root{--bg: #0d1117;--bg2: #161b22;--bg3: #21262d;--accent: #00a8ff;--accent-dim: rgba(0, 168, 255, .1);--text: #adbac7;--muted: #768390;--border: #30363d;--r: 8px;--success: #2ea043;--error: #f85149;--warning: #d29922}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,sans-serif;background:var(--bg);color:var(--text);font-size:14px;min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden;line-height:1.6}header{height:60px;padding:0 24px;display:flex;align-items:center;justify-content:space-between;background:var(--bg2);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;flex-shrink:0}.logo{display:flex;align-items:center;gap:4px;font-weight:700;color:#fff;font-size:15px;white-space:nowrap;overflow:hidden}.logo a{text-decoration:none;display:flex;align-items:center}.nav-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}.layout-hub-nav{max-width:1100px;margin:0 auto;width:100%;display:flex;align-items:center;justify-content:space-between}.hub-nav-links{display:flex;gap:20px;align-items:center}.github-link{color:var(--muted);text-decoration:none;font-size:14px;font-weight:500;transition:color .2s}.github-link:hover{color:#fff}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 16px;border-radius:var(--r);font-size:13px;font-weight:600;font-family:Inter,sans-serif;cursor:pointer;border:1px solid var(--border);background:var(--bg3);color:var(--text);transition:all .2s ease;text-decoration:none;white-space:nowrap;outline:none}.btn:hover{background:#30363d;border-color:var(--muted)}.btn-primary{background:var(--accent);border-color:var(--accent);color:#000}.btn-primary:hover{background:#0091ea;border-color:#0091ea;color:#000}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}.btn-outline:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-dim)}.btn-ghost{background:transparent;border-color:transparent;color:var(--muted)}.btn-ghost:hover{background:var(--accent-dim);color:var(--accent);border-color:transparent}.btn.sm,.sm.btn,.btn-sm{padding:5px 12px;font-size:12px}.toast{position:fixed;bottom:24px;right:24px;background:var(--bg3);border:1px solid var(--border);color:var(--text);padding:10px 18px;border-radius:var(--r);font-size:13px;z-index:9999;animation:layoutToastSlideUp .25s ease;box-shadow:0 4px 20px #0006;pointer-events:none}@keyframes layoutToastSlideUp{0%{transform:translateY(16px);opacity:0}to{transform:translateY(0);opacity:1}}.title-section{text-align:center;padding:24px 0 8px;width:100%;flex-shrink:0}.title-section .title,h1.title{color:#fff;font-size:28px;font-weight:700;background:linear-gradient(135deg,#fff 0%,var(--text) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:inline-block;line-height:1.2;margin:0}.title-section .subtitle,p.subtitle{color:var(--muted);font-size:14px;margin-top:8px}@media(max-width:768px){header{height:auto;padding:10px 16px;flex-wrap:wrap;gap:8px}.logo{font-size:14px;max-width:60%}.nav-actions{gap:6px}.layout-hub-nav{flex-wrap:wrap;gap:8px}}@media(max-width:480px){.title-section .title,h1.title{font-size:22px}}@media print{header,.run-menu-container,.run-help-container,.toast{display:none!important}}