:root {
  --bg: #101010;
  --card: #191919;
  --border: #2b2b2b;
  --red: #ff4545;
  --text: #f5f5f5;
  --muted: #a4a4a4;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

.header {
  padding: 18px 6%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}

.brand {
  font-size: 22px;
  font-weight: 800;
}

.brand span {
  color: var(--red);
}

.version {
  font-size: 11px;
  color: var(--red);
  border: 1px solid #713030;
  padding: 5px 9px;
  border-radius: 5px;
}

.container {
  width: min(90%, 720px);
  margin: auto;
}

.hero {
  padding: 55px 0 35px;
  text-align: center;
}

.heart-icon {
  width: 66px;
  height: 66px;
  display: grid;
  place-items: center;
  margin: 0 auto 15px;
  background: #301717;
  border: 1px solid #5b2929;
  border-radius: 16px;
  color: var(--red);
  font-size: 38px;
}

.label {
  color: var(--red);
  font-size: 11px;
  letter-spacing: 2px;
  font-weight: bold;
}

h1 {
  font-size: clamp(36px, 8vw, 52px);
  margin: 8px 0;
  line-height: 1.2;
}

.subtitle {
  color: var(--muted);
  font-size: 14px;
}

.description {
  color: #c2c2c2;
  font-size: 15px;
  max-width: 600px;
  margin: 20px auto 0;
}

.section {
  margin: 22px 0;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.section h2 {
  margin: 0 0 18px;
  font-size: 20px;
}

.feature {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.feature:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.feature > span {
  color: var(--red);
  font-weight: bold;
  font-size: 13px;
  padding-top: 2px;
}

.feature h3 {
  margin: 0;
  font-size: 15px;
}

.feature p, .command p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.command {
  margin: 12px 0;
  padding: 12px;
  border: 1px solid var(--border);
  background: #111;
  border-radius: 7px;
}

.command code {
  color: var(--red);
  font-size: 13px;
  overflow-wrap: anywhere;
}

.note {
  color: var(--muted);
  font-size: 12px;
  margin: 18px 0 0;
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.info-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.info-row span {
  color: var(--muted);
}

.info-row strong {
  text-align: right;
}

footer {
  margin-top: 35px;
  padding: 22px 12px;
  text-align: center;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 480px) {
  .header {
    padding: 16px 5%;
  }

  .section {
    padding: 17px;
  }

  .hero {
    padding-top: 38px;
  }
}