/* =========================================================
   SILMIR — Frontier silicon landing
   ========================================================= */

:root {
  --bg: #050608;
  --bg-1: #0a0c10;
  --bg-2: #0f1218;
  --panel: #0c0f14;
  --panel-border: #1a1f29;
  --panel-border-bright: #2a3140;
  --ink: #e8ecf2;
  --ink-dim: #9098a8;
  --ink-faint: #5a6373;
  --accent: #4ee3d2;
  --accent-2: #7c9aff;
  --accent-warm: #ffb86b;
  --signal: #ff5577;
  --grid: rgba(78, 227, 210, 0.06);
  --grid-strong: rgba(78, 227, 210, 0.12);

  --mono: 'JetBrains Mono', 'SF Mono', 'Menlo', monospace;
  --sans: 'Space Grotesk', -apple-system, 'Inter', system-ui, sans-serif;

  --max: 1240px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
  min-height: 100vh;
}

/* Grid background */
.grid-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 56px 56px;
  background-position: -1px -1px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 35%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 35%, transparent 100%);
}

.scanline {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background: repeating-linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.012) 0px,
    rgba(255, 255, 255, 0.012) 1px,
    transparent 1px,
    transparent 3px
  );
  mix-blend-mode: overlay;
}

main { position: relative; z-index: 2; }

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 32px;
}

/* =========================================================
   NAV
   ========================================================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 6, 8, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--panel-border);
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}
.brand-mark {
  width: 24px;
  height: 24px;
  color: var(--accent);
}
.brand-text {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.18em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  color: var(--ink-dim);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.15s ease;
}
.nav-links a:hover { color: var(--ink); }
.nav-cta {
  color: var(--accent) !important;
  border: 1px solid var(--panel-border-bright);
  padding: 8px 14px;
  border-radius: 2px;
}
.nav-cta:hover {
  background: rgba(78, 227, 210, 0.08);
  border-color: var(--accent);
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  padding: 80px 0 100px;
  position: relative;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
  padding: 7px 14px;
  border: 1px solid var(--panel-border-bright);
  border-radius: 2px;
  background: rgba(255,255,255,0.02);
  margin-bottom: 28px;
}
.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

h1 {
  font-family: var(--sans);
  font-size: clamp(40px, 6.5vw, 84px);
  font-weight: 500;
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
}
h1 .accent {
  color: var(--accent);
  font-style: italic;
  font-weight: 400;
}
.lede {
  font-size: 18px;
  line-height: 1.55;
  color: var(--ink-dim);
  max-width: 540px;
  margin-bottom: 36px;
}

.cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-decoration: none;
  border-radius: 2px;
  border: 1px solid transparent;
  transition: all 0.18s ease;
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  color: #02110e;
  font-weight: 600;
}
.btn-primary:hover {
  background: #6cf0e0;
  box-shadow: 0 0 30px rgba(78, 227, 210, 0.35);
  transform: translateY(-1px);
}
.btn-ghost {
  border-color: var(--panel-border-bright);
  color: var(--ink);
  background: transparent;
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero-meta {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  border-top: 1px solid var(--panel-border);
  padding-top: 28px;
}
.hero-meta > div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.meta-k {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.meta-v {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink);
}

.hero-visual {
  position: relative;
  border: 1px solid var(--panel-border);
  background:
    radial-gradient(ellipse 80% 80% at 50% 50%, rgba(78,227,210,0.04), transparent 70%),
    var(--panel);
  padding: 28px;
  border-radius: 4px;
}
.hero-visual::before, .hero-visual::after,
.visual-card::before, .visual-card::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border: 1px solid var(--accent);
  opacity: 0.6;
}
.hero-visual::before, .visual-card::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.hero-visual::after, .visual-card::after { bottom: -1px; right: -1px; border-left: none; border-top: none; }
.visual-svg {
  width: 100%;
  height: auto;
  display: block;
}
.visual-caption {
  margin-top: 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}
.caption-tag {
  color: var(--accent);
  border: 1px solid var(--panel-border-bright);
  padding: 2px 6px;
  border-radius: 2px;
  font-weight: 600;
}

/* =========================================================
   METRICS
   ========================================================= */
.metrics {
  padding: 40px 0 60px;
  border-top: 1px solid var(--panel-border);
  border-bottom: 1px solid var(--panel-border);
  background: rgba(255,255,255,0.01);
}
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
.metric {
  padding: 28px 28px 28px 0;
  border-right: 1px solid var(--panel-border);
}
.metric:first-child { padding-left: 0; }
.metric:last-child { border-right: none; padding-right: 0; }
.metric-num {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 12px;
}
.metric-num .num {
  font-family: var(--mono);
  font-size: 44px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: -0.02em;
  line-height: 1;
}
.metric-num .unit {
  font-family: var(--mono);
  font-size: 18px;
  color: var(--ink-dim);
}
.metric-lbl {
  font-size: 13px;
  color: var(--ink-dim);
  line-height: 1.45;
}

/* =========================================================
   SECTIONS
   ========================================================= */
.section {
  padding: 110px 0;
  position: relative;
}
.section-dark {
  background:
    linear-gradient(180deg, rgba(78,227,210,0.02), transparent 30%),
    var(--bg-1);
  border-top: 1px solid var(--panel-border);
  border-bottom: 1px solid var(--panel-border);
}
.section-head {
  margin-bottom: 56px;
  max-width: 760px;
}
.kicker {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
h2 {
  font-family: var(--sans);
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

/* Two-col */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.prose p {
  font-size: 16px;
  color: var(--ink-dim);
  margin-bottom: 18px;
  line-height: 1.65;
}
.prose em {
  color: var(--ink);
  font-style: normal;
  font-weight: 500;
}
.callout {
  margin-top: 24px !important;
  padding: 22px 24px;
  border-left: 2px solid var(--accent);
  background: rgba(78,227,210,0.04);
  font-family: var(--mono);
  font-size: 14px;
  color: var(--ink) !important;
  line-height: 1.6;
}
.visual-card {
  position: relative;
  border: 1px solid var(--panel-border);
  background: var(--panel);
  padding: 28px;
  border-radius: 4px;
}

/* =========================================================
   ARCHITECTURE
   ========================================================= */
.arch-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--panel-border);
  border: 1px solid var(--panel-border);
  margin-bottom: 56px;
}
.arch-card {
  background: var(--bg-1);
  padding: 32px 28px;
  position: relative;
  transition: background 0.2s ease;
}
.arch-card:hover { background: var(--bg-2); }
.arch-num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 18px;
}
.arch-card h3 {
  font-family: var(--sans);
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.arch-card p {
  font-size: 14px;
  color: var(--ink-dim);
  line-height: 1.55;
}

.arch-visual {
  position: relative;
  border: 1px solid var(--panel-border);
  background: var(--panel);
  padding: 36px;
  border-radius: 4px;
}
.arch-visual::before, .arch-visual::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border: 1px solid var(--accent);
  opacity: 0.6;
}
.arch-visual::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.arch-visual::after { bottom: -1px; right: -1px; border-left: none; border-top: none; }

/* =========================================================
   DIFFERENTIATOR
   ========================================================= */
.diff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 36px;
}
.diff-block {
  border: 1px solid var(--panel-border);
  background: var(--panel);
  padding: 28px;
  border-radius: 4px;
}
.diff-block h4 {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-dim);
  margin-bottom: 16px;
  font-weight: 500;
}
.diff-block p {
  font-size: 15px;
  color: var(--ink);
  line-height: 1.6;
}
.diff-block-accent {
  border-color: var(--accent);
  background:
    linear-gradient(180deg, rgba(78,227,210,0.06), transparent),
    var(--panel);
  position: relative;
}
.diff-block-accent h4 {
  color: var(--accent);
}
.diff-block em {
  color: var(--accent);
  font-style: normal;
}
.diff-note {
  font-size: 14px;
  color: var(--ink-faint);
  font-family: var(--mono);
  line-height: 1.65;
  max-width: 880px;
  padding-top: 28px;
  border-top: 1px solid var(--panel-border);
}

/* =========================================================
   STACK
   ========================================================= */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.stack-col {
  border: 1px solid var(--panel-border);
  background: var(--panel);
  padding: 28px;
  border-radius: 4px;
}
.stack-col h4 {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--panel-border);
}
.tech-list { list-style: none; }
.tech-list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--panel-border);
  font-family: var(--mono);
  font-size: 12px;
}
.tech-list li:last-child { border-bottom: none; }
.tech-k {
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 10px;
  align-self: center;
}
.tech-v {
  color: var(--ink);
  text-align: right;
}

/* =========================================================
   ROADMAP
   ========================================================= */
.timeline {
  list-style: none;
  position: relative;
  padding-left: 0;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 60px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--accent), var(--panel-border) 80%);
}
.timeline li {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 32px;
  padding: 28px 0;
  position: relative;
  align-items: start;
}
.timeline li::before {
  content: "";
  position: absolute;
  left: 56px;
  top: 36px;
  width: 9px;
  height: 9px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--bg), 0 0 16px rgba(78,227,210,0.4);
}
.t-marker {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.06em;
  padding-top: 4px;
}
.t-body h4 {
  font-family: var(--sans);
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.t-body p {
  color: var(--ink-dim);
  font-size: 15px;
  line-height: 1.55;
  max-width: 640px;
}

/* =========================================================
   TEAM
   ========================================================= */
.team-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.founder {
  border: 1px solid var(--panel-border);
  background: var(--panel);
  padding: 32px;
  border-radius: 4px;
  transition: border-color 0.2s ease;
}
.founder:hover { border-color: var(--panel-border-bright); }
.founder-head {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 24px;
}
.founder-avatar {
  width: 56px;
  height: 56px;
  color: var(--accent);
  flex-shrink: 0;
}
.founder-avatar svg { width: 100%; height: 100%; }
.founder h3 {
  font-family: var(--sans);
  font-size: 22px;
  font-weight: 500;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.founder-role {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-dim);
  letter-spacing: 0.06em;
}
.founder p {
  color: var(--ink-dim);
  font-size: 15px;
  line-height: 1.6;
}

/* =========================================================
   CTA
   ========================================================= */
.section-cta {
  background:
    radial-gradient(ellipse 60% 60% at 50% 50%, rgba(78,227,210,0.08), transparent 70%),
    var(--bg);
  text-align: center;
  padding: 140px 0;
  border-top: 1px solid var(--panel-border);
}
.cta-block {
  max-width: 720px;
  margin: 0 auto;
}
.cta-block h2 { margin-bottom: 18px; }
.cta-block p {
  color: var(--ink-dim);
  font-size: 17px;
  margin-bottom: 32px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.cta-block .cta-row { justify-content: center; }

/* =========================================================
   FOOTER
   ========================================================= */
.footer {
  border-top: 1px solid var(--panel-border);
  padding: 40px 0;
  position: relative;
  z-index: 2;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--ink);
}
.footer-sub {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink-faint);
  letter-spacing: 0;
  text-transform: none;
}
.footer-meta {
  display: flex;
  gap: 24px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  flex-wrap: wrap;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 980px) {
  .container { padding: 0 24px; }
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-meta { grid-template-columns: 1fr 1fr; }
  .metrics-grid { grid-template-columns: 1fr 1fr; gap: 1px; background: var(--panel-border); }
  .metric { background: var(--bg); border-right: none; padding: 24px; }
  .two-col { grid-template-columns: 1fr; gap: 40px; }
  .arch-grid { grid-template-columns: 1fr 1fr; }
  .diff-grid { grid-template-columns: 1fr; }
  .stack-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .nav-links { gap: 18px; }
  .nav-links a:not(.nav-cta) { display: none; }
  .timeline::before { left: 30px; }
  .timeline li { grid-template-columns: 60px 1fr; gap: 20px; }
  .timeline li::before { left: 26px; }
}

@media (max-width: 560px) {
  .hero { padding: 48px 0 64px; }
  .section { padding: 72px 0; }
  .arch-grid { grid-template-columns: 1fr; }
  .hero-meta { grid-template-columns: 1fr; }
  .metrics-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}