:root {
  --bg: #0d0e14;
  --panel: #171923;
  --text: #e8e9f0;
  --muted: #9aa0b4;
  --line: #2a2d3d;
  --accent: #6d5df6;
  --pass: #34d399;
  --warn: #fbbf24;
  --fail: #f87171;
}
* { box-sizing: border-box; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif;
}
main { max-width: 860px; margin: 0 auto; padding: 48px 20px 80px; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; margin-bottom: 40px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.15; letter-spacing: -0.02em; }
.hero .sub { color: var(--muted); margin: 16px 0 28px; max-width: 46rem; }
#scan-form, #subscribe-form { display: flex; gap: 10px; max-width: 480px; }
input {
  flex: 1; padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--panel); color: var(--text); font-size: 1rem;
}
input:focus { outline: 2px solid var(--accent); border-color: transparent; }
button {
  padding: 12px 22px; border: 0; border-radius: 10px; cursor: pointer;
  background: var(--accent); color: #fff; font-size: 1rem; font-weight: 600;
}
button:disabled { opacity: 0.6; cursor: wait; }
#scan-status, #subscribe-status { color: var(--muted); margin-top: 10px; min-height: 1.5em; }
#report { margin-top: 40px; }
.score-wrap { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
#dial-num { font-size: 34px; font-weight: 700; fill: var(--text); }
#grade { font-size: 1.4rem; font-weight: 700; }
#scanned-url { color: var(--muted); word-break: break-all; }
.cards { display: grid; gap: 12px; margin-top: 28px; }
.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 12px; padding: 16px 18px;
}
.card h3 { display: flex; justify-content: space-between; font-size: 1rem; }
.card .pts { color: var(--muted); font-weight: 500; }
.card p { color: var(--muted); margin-top: 6px; font-size: 0.95rem; }
.card .fix { color: var(--text); }
.card.pass { border-left: 4px solid var(--pass); }
.card.warn { border-left: 4px solid var(--warn); }
.card.fail { border-left: 4px solid var(--fail); }
.explain { margin-top: 64px; }
.explain h2 { margin: 32px 0 8px; }
.explain h3 { margin: 18px 0 4px; font-size: 1.05rem; }
.explain p { color: var(--muted); }
footer { margin-top: 64px; border-top: 1px solid var(--line); padding-top: 40px; }
footer h2 { margin-bottom: 8px; }
footer > p { color: var(--muted); margin-bottom: 16px; }
.fine { margin-top: 32px; font-size: 0.85rem; }
@media (max-width: 520px) { #scan-form, #subscribe-form { flex-direction: column; } }
#share-wrap { margin-top: 10px; }
#share-btn { padding: 8px 14px; font-size: 0.9rem; }
#share-status { color: var(--muted); margin-left: 8px; }