* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #0a0500;
  background: linear-gradient(180deg, #0a0500 0%, #1a0800 50%, #0d0300 100%);
  color: #ffaa55;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  min-height: 100vh;
}

header {
  text-align: center;
  padding: 40px 20px 30px;
  border-bottom: 2px solid #ff660033;
}

header h1 {
  font-size: 2.4rem;
  color: #ff8833;
  text-shadow: 0 0 20px #ff6600aa, 0 0 40px #ff660044;
  letter-spacing: 1px;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 30px 20px;
}

/* --- Вкладки --- */
.tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 30px;
}

.tab-btn {
  background: #1a0a00;
  color: #cc7733;
  border: 2px solid #ff660044;
  border-radius: 10px;
  padding: 12px 20px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 600;
}

.tab-btn:hover {
  background: #2a1000;
  border-color: #ff8833aa;
  color: #ffaa55;
  box-shadow: 0 0 12px #ff660044;
}

.tab-btn.active {
  background: linear-gradient(135deg, #ff6600, #cc4400);
  color: #fff;
  border-color: #ff8833;
  box-shadow: 0 0 18px #ff660066;
}

/* --- Контент вкладок --- */
.tab-content {
  background: #110700;
  border: 1px solid #ff660033;
  border-radius: 14px;
  padding: 35px;
  line-height: 1.7;
  box-shadow: inset 0 0 30px #ff660008;
}

.tab-content.hidden {
  display: none;
}

.tab-content h2 {
  color: #ff9944;
  font-size: 1.5rem;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid #ff660033;
}

.tab-content p {
  color: #eebb88;
  font-size: 1.1rem;
}

/* --- Кнопка внизу --- */
.site-footer {
  text-align: center;
  padding: 40px 20px;
}

.footer-btn {
  display: inline-block;
  background: linear-gradient(135deg, #ff6600, #cc4400);
  color: #fff;
  text-decoration: none;
  border: 2px solid #ff8833;
  border-radius: 12px;
  padding: 14px 32px;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 0 18px #ff660044;
}

.footer-btn:hover {
  background: linear-gradient(135deg, #ff8833, #ff5500);
  box-shadow: 0 0 24px #ff660088;
  transform: translateY(-2px);
}

/* Адаптив */
@media (max-width: 600px) {
  header h1 {
    font-size: 1.5rem;
  }
  .tab-btn {
    padding: 10px 14px;
    font-size: 0.82rem;
  }
  .tab-content {
    padding: 20px;
  }
}