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

:root {
  --ink:      #07091c;
  --ink-2:    #10152e;
  --surface:  #ffffff;
  --off:      #f4f6fb;
  --teal:     #00c9a7;
  --teal-dim: rgba(0,201,167,0.1);
  --text:     #1a2035;
  --muted:    #68789a;
  --border:   #e0e6f0;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 17px;
  color: var(--text);
  line-height: 1.65;
  background: var(--surface);
  overflow-x: hidden;
}

a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── NAV ── */
nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 2.5rem;
  background: rgba(7,9,28,0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(0,201,167,0.12);
}

.nav-logo {
  font-family: "Courier New", Courier, monospace;
  font-size: 1rem;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: 0.12em;
}

.nav-lang a {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 3px;
  padding: 0.28rem 0.65rem;
  transition: color 0.2s, border-color 0.2s;
}
.nav-lang a:hover {
  color: var(--teal);
  border-color: rgba(0,201,167,0.5);
  text-decoration: none;
}

/* ── HERO ── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 9rem 2rem 6rem;
  background: var(--ink);
  overflow: hidden;
}

/* 8-lane grid background */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    90deg,
    transparent 0,
    transparent calc(12.5% - 1px),
    rgba(0,201,167,0.055) calc(12.5% - 1px),
    rgba(0,201,167,0.055) 12.5%
  );
  pointer-events: none;
}

/* Bottom fade */
.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 200px;
  background: linear-gradient(to bottom, transparent, var(--ink));
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 840px;
}

.hero-badge {
  display: inline-block;
  font-family: "Courier New", Courier, monospace;
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--teal);
  border: 1px solid rgba(0,201,167,0.35);
  border-radius: 2px;
  padding: 0.3rem 0.85rem;
  margin-bottom: 2rem;
  opacity: 0;
  animation: riseIn 0.7s 0.1s ease forwards;
}

.hero h1 {
  font-family: Georgia, "Palatino Linotype", Palatino, serif;
  font-size: clamp(2.6rem, 6.5vw, 4.75rem);
  font-weight: 400;
  line-height: 1.08;
  color: #ffffff;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: riseIn 0.7s 0.2s ease forwards;
}

.hero h1 em {
  font-style: italic;
  color: var(--teal);
}

.hero-desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.6);
  max-width: 540px;
  margin: 0 auto 2.75rem;
  opacity: 0;
  animation: riseIn 0.7s 0.35s ease forwards;
}

.hero-cta {
  display: inline-block;
  background: var(--teal);
  color: var(--ink);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.9rem 2.2rem;
  border-radius: 3px;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  opacity: 0;
  animation: riseIn 0.7s 0.5s ease forwards;
}
.hero-cta:hover {
  background: #00e4bc;
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(0,201,167,0.28);
  text-decoration: none;
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0;
  animation: riseIn 0.7s 0.8s ease forwards;
}

.hero-scroll span {
  font-family: "Courier New", monospace;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.2);
}

.hero-scroll::after {
  content: '';
  width: 1px;
  height: 36px;
  background: linear-gradient(to bottom, rgba(0,201,167,0.5), transparent);
  animation: pulseDown 1.8s ease-in-out infinite;
}

/* ── SECTIONS ── */
section { padding: 5.5rem 2rem; }
.container { max-width: 980px; margin: 0 auto; }

.eyebrow {
  display: block;
  font-family: "Courier New", Courier, monospace;
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.6rem;
}

h2 {
  font-family: Georgia, "Palatino Linotype", Palatino, serif;
  font-size: clamp(1.65rem, 3.5vw, 2.4rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 0.65rem;
}

.lead {
  font-size: 1rem;
  color: var(--muted);
  max-width: 600px;
  margin-bottom: 3rem;
}

/* ── FEATURE GRID ── */
.features { background: var(--surface); }

.feat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(275px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.feat-card {
  background: var(--surface);
  padding: 1.75rem;
  transition: background 0.18s;
}
.feat-card:hover { background: var(--off); }

.feat-num {
  display: block;
  font-family: "Courier New", Courier, monospace;
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: var(--teal);
  margin-bottom: 0.7rem;
}

.feat-card h3 {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.feat-card p {
  font-size: 0.94rem;
  color: var(--muted);
  line-height: 1.65;
}

/* ── HIGHLIGHTS ── */
.highlights { background: var(--ink); }

.highlights h2 { color: #fff; }
.highlights .lead { color: rgba(255,255,255,0.45); }

.hl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  column-gap: 3rem;
}

.hl-item {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-size: 0.97rem;
  color: rgba(255,255,255,0.72);
}

.hl-item::before {
  content: "–";
  font-family: "Courier New", monospace;
  color: var(--teal);
  flex-shrink: 0;
}

/* ── DIFFERENTIATORS ── */
.diffs { background: var(--off); }

.diff-list { border-top: 1px solid var(--border); }

.diff-item {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 2rem;
  padding: 2.25rem 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}

.diff-n {
  font-family: "Courier New", Courier, monospace;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--teal);
  padding-top: 0.3rem;
}

.diff-body strong {
  display: block;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.4rem;
}

.diff-body p {
  font-size: 0.97rem;
  color: var(--muted);
  line-height: 1.7;
}

/* ── FOOTER ── */
footer {
  background: var(--ink);
  border-top: 1px solid rgba(0,201,167,0.12);
  padding: 2rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-logo {
  font-family: "Courier New", Courier, monospace;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--teal);
}

footer p {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.28);
}

footer a {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.4);
  transition: color 0.2s;
}
footer a:hover { color: var(--teal); text-decoration: none; }

/* ── ANIMATIONS ── */
@keyframes riseIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulseDown {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); transform-origin: top; }
  50%       { opacity: 1;   transform: scaleY(1);   transform-origin: top; }
}

/* ── RESPONSIVE ── */
@media (max-width: 600px) {
  nav { padding: 0.85rem 1.25rem; }
  .hero { padding: 8rem 1.25rem 5rem; }
  section { padding: 3.5rem 1.25rem; }
  .diff-item { grid-template-columns: 1fr; gap: 0.2rem; }
  .diff-n { padding-top: 0; }
  footer { flex-direction: column; text-align: center; }
}