@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700;800&display=swap');

:root {
  --black: #0B0B0B;
  --white: #FFFFFF;
  --red: #E10600;
  --gray-50: #F7F7F8;
  --gray-100: #EDEDF0;
  --gray-200: #D4D4D8;
  --gray-300: #A1A1AA;
  --gray-400: #71717A;
  --gray-500: #52525B;
  --gray-600: #3F3F46;
  --gray-700: #27272A;
  --gray-800: #18181B;
  --gray-900: #09090B;
  --radius: 12px;
  --max-w: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--black);
  color: var(--white);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

/* ─── NAVIGATION ─── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11,11,11,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--gray-700);
  padding: 0 24px;
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
  color: var(--white);
  text-decoration: none;
}

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

.nav-links {
  display: flex;
  gap: 8px;
  list-style: none;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--gray-300);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 8px;
  transition: all 0.2s;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
  background: var(--gray-700);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 24px;
  cursor: pointer;
}

/* ─── HERO ─── */
.hero {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px 24px 60px;
}

.hero-badge {
  display: inline-block;
  background: var(--red);
  color: var(--white);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 6px 14px;
  border-radius: 6px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero h1 em {
  font-style: normal;
  color: var(--red);
}

.hero-sub {
  font-size: 18px;
  color: var(--gray-300);
  max-width: 680px;
  line-height: 1.6;
}

/* ─── SECTIONS ─── */
.section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 60px 24px;
}

.section-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--red);
  margin-bottom: 12px;
}

.section h2 {
  font-size: clamp(24px, 3.5vw, 40px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.section h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  margin-top: 40px;
}

.section p {
  color: var(--gray-300);
  max-width: 760px;
  margin-bottom: 16px;
}

.section p strong {
  color: var(--white);
  font-weight: 600;
}

/* ─── DIVIDER ─── */
.divider {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.divider hr {
  border: none;
  border-top: 1px solid var(--gray-700);
}

/* ─── CARDS GRID ─── */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.card {
  background: var(--gray-800);
  border: 1px solid var(--gray-700);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.2s;
}

.card:hover {
  border-color: var(--gray-500);
}

.card-icon {
  width: 40px;
  height: 40px;
  background: var(--red);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 16px;
}

.card h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.card p {
  color: var(--gray-400);
  font-size: 14px;
  line-height: 1.6;
}

/* ─── STAT CARDS ─── */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.stat {
  background: var(--gray-800);
  border: 1px solid var(--gray-700);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}

.stat-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--red);
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 13px;
  color: var(--gray-400);
  margin-top: 4px;
}

/* ─── TABLES ─── */
.table-wrap {
  overflow-x: auto;
  margin-top: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--gray-700);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

thead {
  background: var(--gray-800);
}

th {
  text-align: left;
  padding: 14px 16px;
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-300);
  border-bottom: 1px solid var(--gray-700);
  white-space: nowrap;
}

td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--gray-700);
  color: var(--gray-300);
  vertical-align: top;
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255,255,255,0.02); }

td strong { color: var(--white); }

/* ─── SEGMENT CARDS ─── */
.segment {
  background: var(--gray-800);
  border: 1px solid var(--gray-700);
  border-radius: var(--radius);
  padding: 32px;
  margin-top: 32px;
}

.segment-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.segment-num {
  width: 44px;
  height: 44px;
  background: var(--red);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  flex-shrink: 0;
}

.segment h3 {
  margin: 0;
  font-size: 20px;
}

.segment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 16px;
}

.segment-block h5 {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--red);
  margin-bottom: 8px;
}

.segment-block p,
.segment-block ul {
  font-size: 14px;
  color: var(--gray-300);
  line-height: 1.65;
}

.segment-block ul {
  padding-left: 18px;
}

.segment-block li {
  margin-bottom: 4px;
}

/* ─── QUOTE ─── */
.quote {
  border-left: 3px solid var(--red);
  padding: 16px 24px;
  margin: 24px 0;
  background: rgba(225, 6, 0, 0.06);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.quote p {
  color: var(--gray-200);
  font-style: italic;
  font-size: 15px;
}

/* ─── TAG LIST ─── */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.tag {
  background: var(--gray-700);
  color: var(--gray-200);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 20px;
}

.tag--red {
  background: rgba(225, 6, 0, 0.15);
  color: #ff6b6b;
}

.tag--green {
  background: rgba(34, 197, 94, 0.12);
  color: #4ade80;
}

/* ─── NUMBERED LIST ─── */
.numbered-list {
  counter-reset: item;
  list-style: none;
  padding: 0;
  margin-top: 20px;
}

.numbered-list li {
  counter-increment: item;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 0;
  border-bottom: 1px solid var(--gray-700);
  color: var(--gray-300);
  font-size: 15px;
}

.numbered-list li:last-child { border-bottom: none; }

.numbered-list li::before {
  content: counter(item, decimal-leading-zero);
  font-weight: 800;
  font-size: 14px;
  color: var(--red);
  min-width: 28px;
  padding-top: 2px;
}

/* ─── CTA BLOCK ─── */
.cta-block {
  background: linear-gradient(135deg, var(--red), #b80500);
  border-radius: var(--radius);
  padding: 48px;
  margin-top: 48px;
  text-align: center;
}

.cta-block h3 {
  font-size: 28px;
  font-weight: 800;
  color: var(--white);
  margin: 0 0 12px;
}

.cta-block p {
  color: rgba(255,255,255,0.85);
  max-width: 500px;
  margin: 0 auto 24px;
}

.cta-btn {
  display: inline-block;
  background: var(--white);
  color: var(--black);
  font-weight: 700;
  font-size: 15px;
  padding: 14px 32px;
  border-radius: 10px;
  text-decoration: none;
  transition: transform 0.2s;
}

.cta-btn:hover {
  transform: translateY(-2px);
}

/* ─── FOOTER ─── */
.footer {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 24px;
  border-top: 1px solid var(--gray-700);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-text {
  font-size: 13px;
  color: var(--gray-500);
}

.footer-text a {
  color: var(--gray-300);
  text-decoration: none;
}

/* ─── TWO COL ─── */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 32px;
}

/* ─── HYPOTHESIS CARD ─── */
.hypo-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.hypo {
  background: var(--gray-800);
  border: 1px solid var(--gray-700);
  border-radius: 10px;
  padding: 16px 20px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 14px;
  color: var(--gray-300);
  line-height: 1.55;
}

.hypo-num {
  font-weight: 800;
  color: var(--red);
  font-size: 13px;
  min-width: 24px;
  padding-top: 1px;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--black);
    border-bottom: 1px solid var(--gray-700);
    padding: 16px;
  }
  .nav-toggle { display: block; }
  .two-col { grid-template-columns: 1fr; }
  .hero { padding: 48px 24px 40px; }
  .cards { grid-template-columns: 1fr; }
  .hypo-list { grid-template-columns: 1fr; }
  .segment-grid { grid-template-columns: 1fr; }
  .cta-block { padding: 32px 24px; }
}