:root {
  --black: #050505;
  --white: #f6f0e8;
  --acid: #d7ff2f;
  --orange: #ff6b2b;
  --gray: #b8b8b8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--black);
  color: var(--white);
  font-family: "Arial Black", Impact, system-ui, sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
}

a {
  color: inherit;
  text-decoration: none;
}

header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 24px;
  background: rgba(5, 5, 5, 0.9);
  border-bottom: 3px solid var(--acid);
}

.logo {
  color: var(--acid);
}

nav {
  display: flex;
  gap: 18px;
  font-family: Arial, sans-serif;
  font-weight: 900;
}

.hero {
  min-height: 90vh;
  padding: 46px clamp(20px, 6vw, 80px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.warning-strip {
  align-self: flex-start;
  max-width: 920px;
  margin-bottom: 28px;
  padding: 12px 16px;
  background: var(--acid);
  color: var(--black);
  transform: rotate(-1.5deg);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 1120px;
  margin-bottom: 24px;
  font-size: clamp(4rem, 11vw, 11rem);
  line-height: 0.78;
  letter-spacing: -0.09em;
  text-transform: uppercase;
}

h2 {
  font-size: clamp(2.4rem, 6vw, 6rem);
  line-height: 0.82;
  letter-spacing: -0.08em;
}

p,
li {
  max-width: 820px;
  font-family: Arial, sans-serif;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--gray);
}

.panic-button,
button {
  display: inline-flex;
  width: fit-content;
  border: 3px solid var(--white);
  background: var(--orange);
  color: var(--black);
  padding: 16px 22px;
  box-shadow: 8px 8px 0 var(--acid);
  cursor: pointer;
}

.rescue-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 3px solid var(--white);
  border-left: 3px solid var(--white);
}

.rescue-grid article {
  min-height: 300px;
  padding: 32px;
  border-right: 3px solid var(--white);
  border-bottom: 3px solid var(--white);
}

.large-card {
  grid-column: span 3;
  background: var(--white);
  color: var(--black);
}

.large-card p {
  color: #333;
}

.large-card span,
.tag {
  color: var(--orange);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.signals {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 36px;
  padding: 80px clamp(20px, 6vw, 80px);
  background: var(--acid);
  color: var(--black);
}

.signals p,
.signals li {
  color: var(--black);
}

.signals ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.signals li {
  padding: 14px;
  border: 3px solid var(--black);
  background: var(--white);
}

.playbooks {
  padding: 80px clamp(20px, 6vw, 80px);
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.tabs button {
  box-shadow: none;
  background: transparent;
  color: var(--white);
}

.tabs button.active {
  background: var(--acid);
  color: var(--black);
}

.tab-panel {
  border: 3px solid var(--white);
  padding: 30px;
}

.manifesto {
  padding: 80px clamp(20px, 8vw, 120px);
  background: var(--orange);
}

.manifesto p {
  max-width: 1200px;
  color: var(--black);
  font-size: clamp(1.6rem, 3vw, 3rem);
  line-height: 1.2;
}

footer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 34px;
  padding: 70px clamp(20px, 6vw, 80px);
}

footer a {
  color: var(--acid);
}

form {
  display: grid;
  gap: 14px;
}

input,
textarea {
  width: 100%;
  border: 3px solid var(--white);
  background: transparent;
  color: var(--white);
  padding: 16px;
  font: 700 1rem Arial, sans-serif;
}

textarea {
  min-height: 140px;
}

.message {
  min-height: 24px;
  font-family: Arial, sans-serif;
  color: var(--acid);
}

@media (max-width: 850px) {
  header,
  nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .rescue-grid,
  .signals,
  footer {
    grid-template-columns: 1fr;
  }

  .large-card {
    grid-column: span 1;
  }
}