.home-grid{display:grid;gap:20px;grid-template-columns:repeat(4,1fr)}@media (max-width: 1200px){.home-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width: 640px){.home-grid{grid-template-columns:1fr}}.top-nav{border-bottom:1px solid #e5e7eb;background:#fff}.nav-inner{max-width:1100px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between}.nav-brand{font-size:18px;font-weight:800;color:#4c1d95;text-decoration:none}.nav-menu{display:flex;gap:16px}.nav-menu a{font-size:14px;font-weight:600;color:#6b7280;text-decoration:none}.nav-menu a:hover{color:#4c1d95;text-decoration:underline}@media (max-width: 640px){.nav-inner{flex-direction:column;align-items:flex-start;gap:8px}.nav-menu{flex-wrap:wrap;gap:12px}}:root{--bg: #f9fafb;--card: #ffffff;--text: #111827;--muted: #6b7280;--border: #e5e7eb;--border-2: #d1d5db;--primary: #2563eb;--primary-hover: #1d4ed8}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}a{color:inherit}.page-title{font-size:28px;font-weight:800;margin:0 0 8px}.page-desc{color:var(--muted);margin:0 0 32px;line-height:1.6}.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:24px;box-shadow:0 2px 8px #0000000d}input,select,textarea{border:1px solid var(--border-2);border-radius:8px;padding:8px 10px;font-size:14px;background:#fff}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary)}.btn-primary{background:var(--primary);color:#fff;border:none;border-radius:10px;padding:12px 18px;font-size:15px;font-weight:700;cursor:pointer}.btn-primary:hover{background:var(--primary-hover)}