:root {
  --bg: #f4f7f5;
  --card: #ffffff;
  --text: #1f2a24;
  --muted: #66756d;
  --line: #dce6df;
  --accent: #2e7d55;
  --accent-dark: #20613f;
  --good: #1f7a3f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.card {
  max-width: 720px;
  margin: 32px auto;
  padding: 28px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 12px 35px rgba(20, 50, 35, 0.08);
}

.card.wide { max-width: 900px; }

.brand {
  display: inline-block;
  margin-bottom: 16px;
  padding: 6px 12px;
  border-radius: 999px;
  background: #e9f4ed;
  color: var(--accent-dark);
  font-weight: 700;
}

.topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.progress, .muted { color: var(--muted); }

h1 {
  margin: 10px 0 18px;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.18;
}

h2 { margin-top: 28px; }

.lead { font-size: 18px; }

button {
  display: inline-flex;
  justify-content: center;
  width: 100%;
  margin-top: 18px;
  padding: 15px 20px;
  border: 0;
  border-radius: 16px;
  background: var(--accent);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
}

button:hover { background: var(--accent-dark); }

code {
  display: block;
  overflow-x: auto;
  padding: 14px;
  border-radius: 12px;
  background: #eef2ef;
}

.tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
}

.image-box {
  margin: 18px 0;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--line);
}

.image-box img {
  display: block;
  width: 100%;
  height: auto;
}

.answers {
  display: grid;
  gap: 12px;
}

.answer {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 16px;
  cursor: pointer;
}

.answer:hover { background: #f7fbf8; }

.answer input { margin-top: 4px; }

.result-box {
  margin: 20px 0;
  padding: 24px;
  border-radius: 20px;
  background: #eef8f1;
  text-align: center;
}

.score {
  font-size: 48px;
  font-weight: 800;
  color: var(--accent-dark);
}

.good { color: var(--good); font-weight: 700; }

.mistakes {
  display: grid;
  gap: 12px;
}

.mistake {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
}

.mistake a {
  color: var(--accent-dark);
  font-weight: 700;
  text-decoration: none;
}

@media (max-width: 760px) {
  .card {
    margin: 0;
    min-height: 100vh;
    border-radius: 0;
    border-left: 0;
    border-right: 0;
  }
  .topline { align-items: flex-start; flex-direction: column; }
}