:root {
  --bg: #f6f7f9; --card: #fff; --text: #16191d; --muted: #5b636e; --line: #dde1e6;
  --accent: #1f5fd6; --good: #1a7f37; --warn: #9a5b00; --bad: #c42b2b; --info: #4a5563;
  --good-bg: #e7f5ec; --warn-bg: #fdf3e2; --bad-bg: #fdecec; --info-bg: #eef0f3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418; --card: #1b1f25; --text: #e9ecf0; --muted: #9aa3ad; --line: #2c323a;
    --accent: #6ea1ff; --good: #4cc26f; --warn: #f0b04a; --bad: #ff6b6b; --info: #aab3bd;
    --good-bg: #16301f; --warn-bg: #352812; --bad-bg: #3a1b1b; --info-bg: #23282f;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 17px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 640px; margin: 0 auto; padding: 32px 16px 48px; }
.screen { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 24px; }
[hidden] { display: none !important; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 12px; }
h2 { font-size: 24px; line-height: 1.25; margin: 0 0 12px; }
.lead { color: var(--text); }
.prep { padding-left: 22px; color: var(--muted); }
.prep li { margin: 4px 0; }
.fine { color: var(--muted); font-size: 14px; margin: 16px 0 0; }
.hint { color: var(--muted); font-size: 15px; min-height: 1.5em; }
.step { color: var(--muted); font-size: 14px; text-transform: uppercase; letter-spacing: .06em; margin: 0 0 4px; }

button { font: inherit; min-height: 44px; border-radius: 10px; cursor: pointer; padding: 10px 18px; }
.primary { background: var(--accent); color: #fff; border: 0; font-weight: 600; width: 100%; margin-top: 16px; }
.secondary { background: transparent; color: var(--text); border: 1px solid var(--line); }
.link { background: none; border: 0; color: var(--accent); padding: 10px 0; margin-top: 8px; }
button:focus-visible, select:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.field { display: block; margin: 8px 0 16px; }
.field span { display: block; font-size: 14px; color: var(--muted); margin-bottom: 4px; }
select { width: 100%; min-height: 44px; font: inherit; padding: 8px 10px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--text); }

.meter, .progress { height: 10px; border-radius: 5px; background: var(--line); overflow: hidden; margin: 12px 0; }
.meter-fill { height: 100%; width: 0; background: var(--good); transition: width 60ms linear; }
.meter-fill.hot { background: var(--bad); }
.progress { height: 4px; }
.progress-fill { height: 100%; width: 0; background: var(--accent); }

blockquote { margin: 16px 0; padding: 16px; font-size: 20px; line-height: 1.5; background: var(--bg); border-radius: 12px; }
blockquote em { color: var(--muted); font-size: 16px; }

#verdict { text-align: center; margin-bottom: 16px; }
#verdict h2 { margin-top: 8px; }
#verdict p { color: var(--muted); margin: 0; }
.stamp { width: 180px; height: 180px; margin: 0 auto; display: block; transform: rotate(-8deg); animation: stamp .35s ease-out; }
@keyframes stamp { from { transform: rotate(-8deg) scale(1.6); opacity: 0; } to { transform: rotate(-8deg) scale(1); opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .stamp { animation: none; } }

.actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-bottom: 16px; }
#checks { list-style: none; padding: 0; margin: 0; }
#checks li { display: grid; grid-template-columns: 28px 1fr; gap: 0 10px; padding: 12px; border-radius: 12px; margin-bottom: 8px; }
#checks .icon { font-weight: 700; font-size: 18px; line-height: 1.4; text-align: center; }
#checks .title { font-weight: 600; }
#checks .value { color: var(--muted); font-size: 15px; }
#checks .fix { grid-column: 2; margin: 6px 0 0; }
.s-bad { background: var(--bad-bg); } .s-bad .icon { color: var(--bad); }
.s-warn { background: var(--warn-bg); } .s-warn .icon { color: var(--warn); }
.s-info { background: var(--info-bg); } .s-info .icon { color: var(--info); }
.s-good .icon { color: var(--good); }
.s-good { padding-top: 6px !important; padding-bottom: 6px !important; }

@media (max-width: 480px) {
  main { padding-top: 16px; }
  .screen { padding: 18px; border-radius: 12px; }
  h1 { font-size: 26px; }
  blockquote { font-size: 18px; }
}