:root {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #172033;
  background: #f4f7fb;
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: linear-gradient(180deg, #eef4fb 0%, #f8fafc 100%); }
.shell { width: min(900px, calc(100% - 32px)); margin: 48px auto; }
.hero { background: #fff; border: 1px solid #dbe5f1; border-radius: 22px; padding: 36px; box-shadow: 0 12px 30px rgba(31, 78, 120, .08); }
.badge { display: inline-block; font-size: 12px; font-weight: 800; letter-spacing: .08em; padding: 7px 10px; border-radius: 999px; background: #e8f1fb; color: #1f4e78; }
h1 { margin: 14px 0 10px; font-size: clamp(34px, 6vw, 58px); line-height: 1; }
h1 span { color: #4472c4; }
p { line-height: 1.6; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 12px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 18px; border-radius: 12px; text-decoration: none; font-weight: 750; cursor: pointer; border: 0; }
.primary { background: #1f4e78; color: white; }
.secondary { background: #eef4fb; color: #1f4e78; border: 1px solid #c8d8e8; }
.file-button input { display: none; }
.privacy { margin: 0; color: #64748b; font-size: 14px; }
.card { background: #fff; border: 1px solid #dbe5f1; border-radius: 18px; padding: 26px; margin-top: 18px; }
.hidden { display: none !important; }
.score-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.eyebrow { font-size: 12px; font-weight: 800; letter-spacing: .08em; color: #64748b; }
.score { font-size: 42px; font-weight: 850; margin-top: 4px; }
.grade-badge { min-width: 120px; text-align: center; padding: 12px 16px; border-radius: 999px; background: #edf2f7; font-weight: 800; }
.details { display: grid; gap: 10px; margin-top: 22px; }
.result-line { display: grid; grid-template-columns: 42px 1fr auto; align-items: start; gap: 12px; border: 1px solid #e5eaf0; border-radius: 12px; padding: 14px; }
.result-line.ok { border-color: #b9dfc6; background: #f5fbf7; }
.result-line.bad { border-color: #f0c2c2; background: #fff7f7; }
.icon { font-weight: 900; font-size: 20px; }
.title { font-weight: 800; }
.note { margin-top: 4px; color: #64748b; font-size: 14px; line-height: 1.4; }
.points { font-weight: 800; white-space: nowrap; }
.warnings { margin-top: 18px; padding: 14px; border-radius: 12px; background: #fff7df; color: #6b4e00; }
.instructions h2 { margin-top: 0; }
.instructions li { margin: 8px 0; }
@media (max-width: 620px) {
  .shell { margin: 20px auto; }
  .hero { padding: 24px; }
  .actions, .button { width: 100%; }
  .score-row { align-items: flex-start; flex-direction: column; }
  .result-line { grid-template-columns: 34px 1fr; }
  .points { grid-column: 2; }
}