:root {
  --bg: #06111d;
  --card: #0b1a2a;
  --line: #1d354d;
  --text: #e8f3ff;
  --muted: #b7d4ef;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; }
.image-page { padding: 14px; }
.page-head { margin: 0 0 12px; }
h1 { margin: 0 0 4px; font-size: 1.35rem; }
p { margin: 0; color: var(--muted); }
.image-card { border: 1px solid var(--line); border-radius: 14px; background: var(--card); padding: 10px; overflow: auto; }
.image-card img { display: block; max-width: 100%; height: auto; border-radius: 8px; margin: 0 auto; }
.certificate-card { background: #f8f8f8; }
.certificate-card img { width: min(100%, 760px); }