body { background: linear-gradient(180deg, var(--bg) 0%, #f7f9fc 100%); }

@media (prefers-color-scheme: dark) {
  body { background: linear-gradient(180deg, var(--bg) 0%, #0a1020 100%); }
}

html[data-theme="dark"] body { background: linear-gradient(180deg, var(--bg) 0%, #0a1020 100%); }
html[data-theme="light"] body { background: linear-gradient(180deg, var(--bg) 0%, #f7f9fc 100%); }
html[data-theme="black"] body,
html[data-theme="forest"] body,
html[data-theme="slate"] body,
html[data-theme="purple"] body { background: linear-gradient(180deg, var(--bg) 0%, var(--bg) 100%); }
html[data-theme="sepia"] body { background: linear-gradient(180deg, var(--bg) 0%, #f4eee1 100%); }

main { max-width: 1120px; margin: 0 auto; padding: 32px 20px 60px; }
header { margin-bottom: 24px; padding: 28px; border: 1px solid var(--header-border); border-radius: 18px; background: var(--header-bg); box-shadow: var(--header-shadow); }
nav { margin: 16px 0 24px; display: flex; flex-wrap: wrap; gap: 12px; }
nav a { display: inline-block; padding: 8px 14px; border: 1px solid var(--nav-border); border-radius: 999px; text-decoration: none; color: var(--link); background: var(--nav-bg); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.card { background: var(--panel-bg); border: 1px solid var(--panel-border); border-radius: 16px; padding: 20px; box-shadow: var(--shadow); height: 100%; box-sizing: border-box; }
.card h2 { margin-top: 0; line-height: 1.35; font-size: 1.45rem; }
.card p { font-size: 1rem; margin: 10px 0 0; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.actions a { display: inline-block; padding: 8px 12px; border-radius: 10px; background: var(--pill-bg); color: var(--pill-text); text-decoration: none; }
.visual-panel { margin: 0 0 24px; padding: 14px; border: 1px solid var(--panel-border); border-radius: 18px; background: color-mix(in srgb, var(--panel-bg) 90%, var(--bg) 10%); box-shadow: var(--shadow); overflow: hidden; }
.visual-panel svg { display: block; width: 100%; height: auto; }
.visual-caption { margin-top: 10px; color: var(--muted, #5b6472); font-size: 0.96rem; }