:root {
  --bg: #0f1117;
  --card: #171a23;
  --card2: #1e2230;
  --text: #e8eaf0;
  --muted: #9aa1b5;
  --accent: #38bdf8;
  --accent2: #6366f1;
  --green: #34d399;
  --red: #f87171;
  --border: #2a2f3e;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.55;
}
a { color: var(--accent); text-decoration: none; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px; border-bottom: 1px solid var(--border);
  background: rgba(15,17,23,.9); position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 700; font-size: 1.15rem; color: var(--text); }
.brand .logo { color: var(--accent); }
.topbar nav a { margin-left: 18px; color: var(--muted); font-size: .9rem; }
.topbar nav a:hover { color: var(--text); }
main { max-width: 940px; margin: 0 auto; padding: 40px 20px 60px; }
.hero { text-align: center; margin-bottom: 32px; }
.hero h1 { font-size: 2.1rem; line-height: 1.2; margin-bottom: 14px; }
.hero .sub { color: var(--muted); max-width: 720px; margin: 0 auto; font-size: 1.02rem; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 14px;
  padding: 26px; margin-bottom: 26px;
}
.card.narrow { max-width: 620px; margin-left: auto; margin-right: auto; }
.tabs { display: flex; gap: 8px; margin-bottom: 18px; }
.tab {
  background: var(--card2); color: var(--muted); border: 1px solid var(--border);
  padding: 8px 16px; border-radius: 8px; cursor: pointer; font-size: .9rem;
}
.tab.active { background: var(--accent); color: #0b1220; border-color: var(--accent); font-weight: 600; }
.hidden { display: none; }
label { display: block; font-size: .85rem; color: var(--muted); margin: 12px 0 6px; }
input[type=text], input[type=email], select, textarea {
  width: 100%; padding: 11px 13px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--card2); color: var(--text); font-size: .95rem;
}
textarea { font-family: inherit; }
button[type=submit], .btn {
  display: inline-block; margin-top: 16px; padding: 11px 22px; border: none; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #0b1220;
  font-weight: 700; font-size: .95rem; cursor: pointer;
}
button[type=submit]:hover, .btn:hover { filter: brightness(1.1); }
.hint { color: var(--muted); font-size: .82rem; margin-top: 8px; }
.error {
  background: rgba(248,113,113,.12); border: 1px solid rgba(248,113,113,.4);
  color: #fecaca; padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; font-size: .9rem;
}
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.grid.small { grid-template-columns: repeat(4, 1fr); gap: 0 12px; }
.checks { margin-top: 12px; display: flex; gap: 20px; }
.checks label { display: flex; align-items: center; gap: 6px; margin: 0; color: var(--text); }
.checks input { width: auto; }
#how h2, #pricing h2 { text-align: center; margin: 40px 0 20px; font-size: 1.5rem; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.mini { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.mini h3 { font-size: .95rem; margin-bottom: 6px; color: var(--accent); }
.mini p { color: var(--muted); font-size: .85rem; }
.pricing { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.plan {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 20px 16px; display: flex; flex-direction: column; gap: 8px;
}
.plan.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.plan h3 { font-size: 1rem; }
.plan p { color: var(--muted); font-size: .82rem; flex-grow: 1; }
.plan .price { font-size: 1.7rem; font-weight: 800; }
.plan .btn { text-align: center; margin-top: 6px; }
.footer {
  text-align: center; color: var(--muted); font-size: .8rem;
  padding: 24px; border-top: 1px solid var(--border);
}
.score-big { font-size: 3.4rem; font-weight: 800; color: var(--accent); line-height: 1; }
.score-big span { font-size: 1.1rem; color: var(--muted); font-weight: 400; }
.meta-line { color: var(--muted); font-size: .88rem; margin: 6px 0 18px; }
.report-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; }
.fixes { margin: 10px 0 10px 20px; }
.fixes li { margin-bottom: 8px; color: var(--text); font-size: .92rem; }
.sections { width: 100%; border-collapse: collapse; margin: 10px 0 4px; }
.sections td { padding: 7px 10px; font-size: .88rem; border-bottom: 1px solid var(--border); }
.sections .label { width: 34%; color: var(--muted); }
.sections .bar { width: 52%; }
.bar-fill { height: 8px; background: linear-gradient(90deg, var(--accent), var(--accent2)); border-radius: 4px; }
.sections .pts { width: 14%; text-align: right; color: var(--text); }
details.checks { margin: 14px 0; }
details.checks summary { cursor: pointer; font-weight: 600; font-size: .95rem; color: var(--accent); }
details.checks ul { list-style: none; margin-top: 8px; }
details.checks li {
  display: flex; align-items: baseline; gap: 8px; padding: 6px 0;
  border-bottom: 1px solid var(--border); font-size: .88rem;
}
details.checks li.ok { color: var(--text); }
details.checks li.bad { color: #fca5a5; }
.chip { font-weight: 800; }
.detail { color: var(--muted); font-size: .82rem; }
.pts { margin-left: auto; color: var(--muted); white-space: nowrap; }
.rewrite-block { margin: 18px 0; }
.rewrite-block h3 { font-size: .95rem; margin-bottom: 8px; }
.limit { color: var(--muted); font-size: .78rem; font-weight: 400; }
.copy {
  background: var(--card2); border: 1px solid var(--border); border-radius: 8px;
  padding: 12px; font-size: .92rem; white-space: pre-wrap; word-break: break-word;
}
pre.copy { font-family: inherit; }
.copy-btn {
  margin-top: 8px; padding: 6px 14px; border: 1px solid var(--border); border-radius: 6px;
  background: var(--card2); color: var(--accent); cursor: pointer; font-size: .82rem;
}
.note { background: rgba(99,102,241,.12); border: 1px solid rgba(99,102,241,.35); padding: 10px 12px; border-radius: 8px; font-size: .85rem; margin-bottom: 10px; }
.delta .delta-scores { display: flex; align-items: center; gap: 18px; margin: 14px 0; }
.delta .big { font-size: 2.4rem; font-weight: 800; }
.delta .big.before { color: var(--red); }
.delta .big.after { color: var(--green); }
.delta .big span { display: block; font-size: .8rem; color: var(--muted); font-weight: 400; }
.delta .arrow { font-size: 1.8rem; color: var(--muted); }
.changes { margin: 6px 0 10px 20px; color: var(--text); font-size: .88rem; }
.changes li { margin-bottom: 4px; }
.preview-rewrite { margin: 10px 0; }
@media (max-width: 720px) {
  .cards, .pricing { grid-template-columns: 1fr 1fr; }
  .grid.small { grid-template-columns: 1fr 1fr; }
}