:root {
  --bg: #0f1117; --card: #1a1d27; --line: #2a2e3a; --ink: #e8eaf0;
  --muted: #9aa0b0; --brand: #6c8cff; --brand2: #34d399; --warn: #f5a623; --bad: #ef5e6b;
  --radius: 14px; --max: 760px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
main { max-width: var(--max); margin: 0 auto; padding: 24px 20px 64px; }

.site-header {
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--max); margin: 0 auto; padding: 18px 20px;
}
.brand { font-weight: 700; font-size: 19px; color: var(--ink); }
.site-header nav a { margin-left: 18px; color: var(--muted); font-weight: 600; font-size: 15px; }

h1 { font-size: 32px; line-height: 1.2; margin: 8px 0 12px; letter-spacing: -0.02em; }
h2 { font-size: 23px; margin: 36px 0 12px; letter-spacing: -0.01em; }
h3 { font-size: 19px; margin: 24px 0 8px; }
p { margin: 0 0 16px; }
.lede { font-size: 19px; color: var(--muted); margin-bottom: 28px; }
ul, ol { padding-left: 22px; }
li { margin: 6px 0; }
code { background: var(--card); padding: 2px 6px; border-radius: 6px; font-size: 14px; }

.hero { text-align: center; padding: 24px 0 8px; }
.hero h1 { font-size: 40px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin: 20px 0; }
.tile {
  display: block; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px; color: var(--ink);
}
.tile:hover { border-color: var(--brand); text-decoration: none; transform: translateY(-2px); transition: .15s; }
.tile .emoji { font-size: 26px; }
.tile h3 { margin: 8px 0 4px; }
.tile p { color: var(--muted); font-size: 15px; margin: 0; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; margin: 20px 0; }
label { display: block; font-weight: 600; font-size: 14px; margin: 14px 0 6px; color: var(--muted); }
input[type=text], input[type=number], textarea {
  width: 100%; background: #11141d; border: 1px solid var(--line); color: var(--ink);
  border-radius: 10px; padding: 12px 14px; font: inherit;
}
textarea { min-height: 130px; resize: vertical; }
.btn {
  display: inline-block; background: var(--brand); color: #fff; border: 0; cursor: pointer;
  padding: 13px 22px; border-radius: 10px; font: inherit; font-weight: 700; margin-top: 16px;
}
.btn:hover { filter: brightness(1.08); text-decoration: none; }
.row { display: flex; gap: 14px; flex-wrap: wrap; }
.row > div { flex: 1; min-width: 140px; }

.score { font-size: 54px; font-weight: 800; line-height: 1; }
.meter { height: 12px; background: #11141d; border-radius: 99px; overflow: hidden; margin: 10px 0 4px; }
.meter > span { display: block; height: 100%; border-radius: 99px; transition: width .4s; }
.good { color: var(--brand2); } .mid { color: var(--warn); } .poor { color: var(--bad); }
.bg-good { background: var(--brand2); } .bg-mid { background: var(--warn); } .bg-poor { background: var(--bad); }
.flag { display: inline-block; background: rgba(239,94,107,.15); color: var(--bad); border-radius: 6px; padding: 1px 7px; margin: 3px 4px 3px 0; font-size: 14px; }
.tip { background: rgba(108,140,255,.1); border-left: 3px solid var(--brand); padding: 10px 14px; border-radius: 8px; margin: 8px 0; font-size: 15px; }
table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 15px; }
th, td { text-align: right; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th:first-child, td:first-child { text-align: left; }

.cta {
  background: linear-gradient(135deg, rgba(108,140,255,.16), rgba(52,211,153,.12));
  border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; margin: 28px 0;
}
.cta h3 { margin: 0 0 6px; }
.cta p { color: var(--muted); margin: 0 0 12px; font-size: 15px; }
.cta .btn { margin: 0; }

.site-footer { max-width: var(--max); margin: 0 auto; padding: 30px 20px 60px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); }
.disclosure { font-size: 12px; opacity: .8; }
.hidden { display: none; }