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

body {
  min-height: 100vh;
  background: #050505;
  color: #fff;
  font-family: Arial, Helvetica, sans-serif;
  overflow: hidden;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(255, 0, 92, 0.18), transparent 30%),
    radial-gradient(circle at 20% 85%, rgba(255,255,255,0.06), transparent 28%),
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: auto, auto, 80px 80px, 80px 80px;
  pointer-events: none;
}

.back-btn {
  position: fixed;
  top: 28px;
  left: 28px;
  z-index: 9999;

  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.14);

  background: rgba(20, 20, 20, 0.85);
  color: #fff;

  font-weight: 900;
  cursor: pointer;
  backdrop-filter: blur(14px);
  transition: 0.3s ease;
}

.back-btn::before {
  content: "← ";
  color: #ff005c;
}

.back-btn:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 0, 92, 0.7);
  box-shadow: 0 0 28px rgba(255, 0, 92, 0.35);
}

.container {
  height: 100vh;
  max-width: 950px;
  margin: 0 auto;
  padding: 90px 30px 40px;
  position: relative;
  z-index: 3;
}

.header {
  text-align: center;
  margin-bottom: 42px;
}

.header p {
  color: #ff005c;
  letter-spacing: 4px;
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 900;
  margin-bottom: 10px;
}

.header h1 {
  font-size: 72px;
  font-weight: 900;
  letter-spacing: -4px;
  color: #fff;
  text-transform: uppercase;
}

.header h1::after {
  content: "";
  display: block;
  width: 160px;
  height: 6px;
  margin: 20px auto 0;
  border-radius: 50px;
  background: #ff005c;
  box-shadow: 0 0 25px rgba(255, 0, 92, 0.7);
}

.card-wrapper {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.list-card {
  position: relative;
  background: rgba(20, 20, 20, 0.85);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 26px;
  padding: 30px;
  min-height: 300px;

  backdrop-filter: blur(14px);
  box-shadow: 0 22px 55px rgba(0,0,0,0.45);
  transition: 0.3s ease;
}

.list-card:hover {
  transform: translateY(-8px);
  border-color: rgba(255, 0, 92, 0.7);
  box-shadow:
    0 22px 55px rgba(0,0,0,0.5),
    0 0 35px rgba(255, 0, 92, 0.28);
}

.list-card::before {
  content: "+";
  position: absolute;
  left: -18px;
  top: 18px;
  color: #ff005c;
  font-size: 34px;
  font-weight: 900;
  transform: rotate(12deg);
}

.list-card h2 {
  color: #fff;
  font-size: 23px;
  font-weight: 900;
  margin-bottom: 22px;
}

.list-card h2::after {
  content: "";
  display: block;
  width: 65px;
  height: 4px;
  margin-top: 10px;
  border-radius: 20px;
  background: #ff005c;
}

.list-card ol,
.list-card ul {
  padding-left: 22px;
  color: #cfcfcf;
  line-height: 1.9;
  font-size: 17px;
}

.list-card ul ul,
.list-card ol ul {
  margin-top: 6px;
  padding-left: 20px;
  color: #aaa;
}

.list-card li::marker {
  color: #ff005c;
  font-weight: bold;
}

body::after {
  content: "";
  position: fixed;
  right: 55px;
  bottom: 55px;
  width: 44px;
  height: 44px;
  border-right: 9px solid #fff;
  border-bottom: 9px solid #fff;
  pointer-events: none;
}

/* PREVIEW MODE */
.preview-mode {
  height: 100vh;
  overflow: hidden;
}

.preview-mode .container {
  height: 100vh;
  padding: 0;
  margin: 0 auto;

  display: flex;
  justify-content: center;
  align-items: center;
}

.preview-mode .header {
  margin: 0;
  text-align: center;
}

.preview-mode .card-wrapper,
.preview-mode .back-btn,
.preview-mode .header p {
  display: none;
}

.preview-mode .header h1 {
  font-size: 80px;
  line-height: 1;
  font-weight: 900;
  letter-spacing: -3px;
  color: #fff;
  margin: 0;
  text-align: center;
}

.preview-mode .header h1::after {
  width: 160px;
  height: 6px;
  margin: 20px auto 0;
  background: #ff005c;
  box-shadow: 0 0 25px rgba(255, 0, 92, 0.7);
}

@media (max-width: 850px) {
  body {
    overflow: auto;
  }

  .container {
    height: auto;
    padding: 90px 28px 40px;
  }

  .header h1 {
    font-size: 48px;
    letter-spacing: -2px;
  }

  .card-wrapper {
    grid-template-columns: 1fr;
  }

  body::after {
    display: none;
  }
}