/* ===== Design Tokens ===== */
:root {
  --bg: #0A0E14;
  --panel: #10161F;
  --panel-border: rgba(78, 155, 255, 0.14);
  --accent: #4E9BFF;
  --accent-soft: #D8E6FF;
  --signal: #4ADE9C;
  --text: #E8ECF4;
  --text-dim: #8592A6;
  --font-display: 'Chakra Petch', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius: 14px;
  --container: 1180px;
}

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

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.section-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}
.section-inner.narrow { max-width: 760px; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.15;
  margin-bottom: 16px;
  max-width: 720px;
}

.section-lede {
  color: var(--text-dim);
  font-size: 17px;
  max-width: 620px;
  margin-bottom: 48px;
}

/* ===== Nav ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  background: rgba(10, 14, 20, 0.7);
  border-bottom: 1px solid var(--panel-border);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.06em;
}
.brand-mark { width: 22px; height: 22px; color: var(--accent); display: inline-flex; }
.brand-mark svg { width: 100%; height: 100%; }
.nav-links { display: flex; align-items: center; gap: 32px; font-size: 14px; }
.nav-links a { color: var(--text-dim); transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }
.nav-cta {
  background: var(--accent);
  color: #051019 !important;
  padding: 9px 18px;
  border-radius: 100px;
  font-weight: 600;
}
.nav-cta:hover { background: var(--accent-soft); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 32px 80px;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.arc-svg { width: 100%; height: 100%; }
.arc-path {
  stroke: var(--accent);
  stroke-width: 1.5;
  opacity: 0;
  filter: drop-shadow(0 0 8px rgba(78,155,255,0.6));
  stroke-dasharray: 1200;
  stroke-dashoffset: 1200;
  animation: draw-arc 2.4s ease-out forwards, flicker 5s ease-in-out infinite;
}
.arc-1 { animation-delay: 0.1s, 2.5s; }
.arc-2 { animation-delay: 0.4s, 3.1s; opacity: 0; stroke: var(--accent-soft); stroke-width: 1; }
.arc-3 { animation-delay: 0.7s, 3.7s; opacity: 0; stroke: var(--signal); stroke-width: 1; }

@keyframes draw-arc {
  to { stroke-dashoffset: 0; opacity: 0.55; }
}
@keyframes flicker {
  0%, 100% { opacity: 0.55; }
  45% { opacity: 0.55; }
  47% { opacity: 0.15; }
  49% { opacity: 0.6; }
  52% { opacity: 0.3; }
  55% { opacity: 0.55; }
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(78,155,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(78,155,255,0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black, transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
}

.status-line {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  border: 1px solid var(--panel-border);
  background: rgba(16,22,31,0.6);
  padding: 7px 14px;
  border-radius: 100px;
  margin-bottom: 28px;
}
.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 8px var(--signal);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }
.status-value { color: var(--signal); }

.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(38px, 6vw, 72px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
  max-width: 820px;
}

.hero-sub {
  font-size: 18px;
  color: var(--text-dim);
  max-width: 560px;
  margin-bottom: 36px;
}

.hero-actions { display: flex; gap: 16px; margin-bottom: 64px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 15px;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--accent);
  color: #051019;
}
.btn-primary:hover { background: var(--accent-soft); transform: translateY(-1px); }
.btn-ghost {
  border: 1px solid var(--panel-border);
  color: var(--text);
  background: transparent;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-block { width: 100%; }

.hero-specs { display: flex; gap: 48px; flex-wrap: wrap; }
.hero-spec { display: flex; flex-direction: column; }
.hero-spec-num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 600;
  color: var(--accent);
}
.hero-spec-label {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 2px;
}

/* ===== Capabilities ===== */
.capabilities { padding: 120px 0; border-top: 1px solid var(--panel-border); }
.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.cap-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(10px);
  transition: border-color 0.25s, transform 0.25s;
}
.cap-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.cap-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--signal);
  display: block;
  margin-bottom: 14px;
}
.cap-card h3 {
  font-family: var(--font-display);
  font-size: 19px;
  margin-bottom: 10px;
}
.cap-card p { color: var(--text-dim); font-size: 14.5px; }

/* ===== Tiers ===== */
.tiers { padding: 120px 0; border-top: 1px solid var(--panel-border); }
.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.tier-card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 32px;
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s, border-color 0.25s;
}
.tier-card:hover { transform: translateY(-4px); }
.tier-featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(78,155,255,0.08), var(--panel) 40%);
}
.tier-badge {
  position: absolute;
  top: -12px;
  left: 32px;
  background: var(--accent);
  color: #051019;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
  letter-spacing: 0.04em;
}
.tier-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 18px; }
.tier-name { font-family: var(--font-display); font-size: 22px; font-weight: 600; }
.tier-tag { font-family: var(--font-mono); font-size: 12px; color: var(--text-dim); }
.tier-price {
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 24px;
}
.currency { font-size: 22px; color: var(--text-dim); margin-right: 2px; }
.tier-specs { margin-bottom: 28px; flex-grow: 1; }
.tier-specs li {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  font-size: 14px;
}
.tier-specs li span:first-child { color: var(--text-dim); }
.tier-specs li span:last-child { font-family: var(--font-mono); font-size: 13px; }
.tier-btn {
  display: block;
  text-align: center;
  padding: 13px;
  border-radius: 100px;
  border: 1px solid var(--panel-border);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s;
}
.tier-btn:hover { border-color: var(--accent); color: var(--accent); }
.tier-btn-primary { background: var(--accent); color: #051019; border-color: var(--accent); }
.tier-btn-primary:hover { background: var(--accent-soft); color: #051019; }
.tier-footnote { color: var(--text-dim); font-size: 13px; margin-top: 32px; max-width: 620px; }

/* ===== Stack / Flow ===== */
.stack { padding: 120px 0; border-top: 1px solid var(--panel-border); }
.flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 56px;
  counter-reset: step;
}
.flow-step {
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
}
.flow-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -20px;
  width: 20px;
  height: 1px;
  background: var(--panel-border);
  display: none;
}
@media (min-width: 900px) {
  .flow-step:not(:last-child)::after { display: block; }
}
.flow-num {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 13px;
  display: block;
  margin-bottom: 12px;
}
.flow-step h4 { font-family: var(--font-display); font-size: 17px; margin-bottom: 8px; }
.flow-step p { color: var(--text-dim); font-size: 13.5px; }

.stack-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  border-top: 1px solid var(--panel-border);
  padding-top: 32px;
}
.stack-meta-item { display: flex; flex-direction: column; gap: 6px; }
.mono-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--signal);
  letter-spacing: 0.06em;
}
.stack-meta-item span:last-child { font-size: 14px; color: var(--text); }

/* ===== Pre-order ===== */
.preorder { padding: 120px 0; border-top: 1px solid var(--panel-border); }
.preorder-form {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 36px;
  backdrop-filter: blur(10px);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.form-field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }
.form-row .form-field { margin-bottom: 0; }
.form-field label { font-size: 13px; color: var(--text-dim); }
.form-field input, .form-field select, .form-field textarea {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  transition: border-color 0.2s;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  border-color: var(--accent);
  outline: none;
}
.form-field textarea { resize: vertical; }
.form-status {
  text-align: center;
  margin-top: 16px;
  font-size: 14px;
  color: var(--signal);
  min-height: 20px;
}

/* ===== Footer ===== */
.footer { border-top: 1px solid var(--panel-border); padding: 48px 32px; }
.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.06em;
}
.footer-links { display: flex; gap: 24px; font-size: 14px; }
.footer-links a { color: var(--text-dim); transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); }
.footer-copy { width: 100%; color: var(--text-dim); font-size: 12.5px; text-align: center; margin-top: 8px; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .nav-links { gap: 18px; }
  .nav-links a:not(.nav-cta) { display: none; }
  .capability-grid, .tier-grid { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr 1fr; }
  .stack-meta { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero-specs { gap: 28px; }
}
@media (max-width: 560px) {
  .flow { grid-template-columns: 1fr; }
  .section-inner { padding: 0 20px; }
}

/* ===== Scroll reveal ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }