.sources-main { max-width: 1120px; margin: 3rem auto 5rem; padding: 0 1.25rem; }
.sources-main h1 { font-size: clamp(2rem, 5vw, 3.6rem); line-height: 1.12; margin: .8rem 0 1.4rem; }
.sources-intro { max-width: 760px; font-size: 1.15rem; }
.sources-main p { color: var(--paper-soft, #cfdbd8); line-height: 1.7; }
.sources-main section { margin: 2.6rem 0; }
.sources-main h2 { margin-bottom: 1rem; font-size: 1.5rem; }
.sources-main h3 { margin: 0 0 .75rem; font-size: 1.15rem; }
.sources-main a { color: var(--cyan, #49eacb); text-underline-offset: .22em; }
.sources-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.sources-grid article { padding: 1.4rem; border: 1px solid #263b35; border-radius: 16px; background: #0d1713; }
.sources-note { font-size: .9rem; margin-bottom: 1.5rem; }
.site-header nav a { color: #cfdbd8; font-size: .9rem; }
@media (max-width: 850px) { .sources-grid { grid-template-columns: 1fr; } .sources-main { margin-top: 2rem; } }
.sources-main .button-primary { color: #101b15; }