.proof-filters{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:10px;padding:14px;border:1px solid var(--line);border-radius:18px;background:white}.proof-filters label{font-size:12px;font-weight:900;text-transform:uppercase;color:var(--muted)}.proof-filters input,.proof-filters select{width:100%;min-height:46px;margin-top:6px;border:1px solid var(--line);border-radius:10px;background:white;padding:0 12px;font:inherit;text-transform:none}.materials-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.material-card{display:block;border:1px solid var(--line);border-radius:14px;padding:16px;color:var(--ink);text-decoration:none}.material-card:hover{border-color:var(--blue);box-shadow:0 8px 24px #1677ff14}.material-card span{display:block;color:var(--blue);font-size:11px;font-weight:900;text-transform:uppercase}.material-card strong{display:block;margin-top:5px}.material-card p{margin-bottom:0;color:var(--muted);font-size:14px}.disabled-action{opacity:.55;cursor:not-allowed;pointer-events:none;background:#eef2f7!important;color:#667085!important;border-color:#d7dee8!important}.proof-source{color:var(--muted);font-size:13px;margin:12px 0 0}.proof-featured{border-color:#b9d6ff}@media(max-width:820px){.proof-filters{grid-template-columns:1fr 1fr}.materials-grid{grid-template-columns:1fr}}@media(max-width:520px){.proof-filters{grid-template-columns:1fr}}