:root {
  --bg: #0b0f17;
  --surface: #121826;
  --border: #222b3d;
  --text: #e8edf5;
  --muted: #98a3b8;
  --accent: #4f8cff; /* electric blue */
  --accent-ink: #050a14;
  --radius: 14px;
  --max: 1080px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 17px/1.65 Inter, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-weight: 800; font-size: 20px; color: var(--text); letter-spacing: -0.02em; }
.logo span { color: var(--accent); }
.logo:hover { text-decoration: none; }
.nav nav { display: flex; gap: 22px; align-items: center; }
.nav nav a:not(.btn) { color: var(--muted); font-weight: 500; font-size: 15px; }
.nav nav a:not(.btn):hover { color: var(--text); text-decoration: none; }

/* Buttons */
.btn {
  display: inline-block;
  background: var(--accent); color: var(--accent-ink);
  font-weight: 600; padding: 12px 22px; border-radius: 999px;
  border: 1px solid var(--accent); cursor: pointer; font-size: 16px;
  transition: transform .15s ease, opacity .15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); opacity: .92; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-sm { padding: 8px 16px; font-size: 14px; }

/* Hero */
.hero { padding: 90px 20px 60px; display: grid; grid-template-columns: 1.15fr 1fr; gap: 40px; align-items: center; }
.hero-visual { margin: 0; position: relative; text-align: center; }
.hero-visual img {
  width: 100%; height: auto; max-width: 520px; margin: 0 auto; aspect-ratio: 1; border-radius: 50%;
  -webkit-mask-image: radial-gradient(circle at center, #000 55%, transparent 71%);
          mask-image: radial-gradient(circle at center, #000 55%, transparent 71%);
  filter: drop-shadow(0 0 60px rgba(79, 140, 255, .25));
}
.hero-visual figcaption { font-family: "JetBrains Mono", monospace; font-size: 12px; color: var(--muted); margin-top: 6px; letter-spacing: .02em; }

/* Proof strip */
.proof { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-bottom: 70px; padding: 0; }
.stat { background: var(--surface); padding: 22px 22px 20px; }
.stat strong { display: block; font-size: 34px; font-weight: 800; letter-spacing: -0.03em; color: var(--accent); line-height: 1.1; }
.stat span { display: block; color: var(--muted); font-size: 14px; line-height: 1.45; margin-top: 6px; }

/* Approach */
.grid.four { grid-template-columns: repeat(4, 1fr); }
.principle .num { display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 8px; background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent); font-family: "JetBrains Mono", monospace; font-size: 14px; margin-bottom: 14px; }
.principle h3 { font-size: 18px; }
.principle p { font-size: 15px; margin: 0; }

/* Use cases */
.uses { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.use { background: var(--surface); padding: 20px 22px; }
.use .who { font-family: "JetBrains Mono", monospace; font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--accent); }
.use p { margin: 8px 0 0; color: var(--muted); font-size: 15px; }
.section .grid + .sub, .section .grid.three + .sub { margin-top: 44px; }

/* CTA band */
.band {
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  padding: 34px 36px; margin: 10px 0 70px; border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  background: radial-gradient(120% 140% at 0% 0%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 60%), var(--surface);
}
.band h2 { margin: 0 0 6px; font-size: 26px; letter-spacing: -0.02em; }
.band p { margin: 0; color: var(--muted); max-width: 56ch; }

/* How I build */
.build-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; align-items: start; }
.muted { color: var(--muted); }
.checks { list-style: none; padding: 0; margin: 0; }
.checks li { position: relative; padding: 10px 0 10px 30px; border-top: 1px solid var(--border); color: var(--muted); font-size: 15px; }
.checks li:first-child { border-top: 0; }
.checks li::before { content: "✓"; position: absolute; left: 0; top: 9px; color: var(--accent); font-weight: 700; }
.checks strong { color: var(--text); }

/* Process */
.steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.steps li { counter-increment: step; border-top: 2px solid var(--accent); padding-top: 16px; }
.steps li::before { content: "0" counter(step); font-family: "JetBrains Mono", monospace; font-size: 13px; color: var(--accent); display: block; margin-bottom: 8px; }
.steps strong { display: block; font-size: 18px; margin-bottom: 6px; }
.steps span { color: var(--muted); font-size: 15px; }
.eyebrow {
  font-family: "JetBrains Mono", monospace; font-size: 13px;
  color: var(--accent); text-transform: uppercase; letter-spacing: .08em; margin: 0 0 18px;
}
h1 {
  font-size: clamp(38px, 6.5vw, 72px); line-height: 1.05;
  letter-spacing: -0.035em; font-weight: 800; margin: 0 0 24px; max-width: 14ch;
}
h1 em { font-style: normal; color: var(--accent); }
.lede { font-size: 19px; color: var(--muted); max-width: 58ch; margin: 0 0 32px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }

/* Sections */
.section { padding: 70px 20px; border-top: 1px solid var(--border); }
.section-title {
  font-size: 30px; letter-spacing: -0.02em; margin: 0 0 32px;
  display: flex; align-items: baseline; gap: 14px;
}
.section-title span { font-family: "JetBrains Mono", monospace; font-size: 14px; color: var(--accent); }

.grid { display: grid; gap: 18px; }
.sub { font-size: 15px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; margin: 8px 0 16px; }
.grid + .sub { margin-top: 44px; }
.card.feature ul { margin-bottom: 14px; }
.shot { max-width: none; width: calc(100% + 52px); margin: -26px -26px 20px; border-radius: var(--radius) var(--radius) 0 0; border-bottom: 1px solid var(--border); aspect-ratio: 16 / 9; object-fit: cover; object-position: top; }
.shot-center { object-position: center; }
.card.span { grid-column: 1 / -1; }
.mini-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 4px 0 16px; }
.mini-stats div { border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; background: color-mix(in srgb, var(--accent) 6%, transparent); }
.mini-stats strong { display: block; font-size: 20px; color: var(--accent); letter-spacing: -0.02em; line-height: 1.2; }
.mini-stats span { font-size: 12px; color: var(--muted); }
.card.wide { grid-column: 1 / -1; display: grid; grid-template-columns: 1.1fr 1fr; gap: 28px; align-items: center; }
.card.wide .shot { width: calc(100% + 26px); height: calc(100% + 52px); margin: -26px 0 -26px -26px; aspect-ratio: auto; border-radius: var(--radius) 0 0 var(--radius); border-bottom: 0; border-right: 1px solid var(--border); min-height: 320px; }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid.two { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px;
  transition: border-color .2s ease, transform .2s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card h3 { margin: 0 0 10px; font-size: 21px; letter-spacing: -0.01em; }
.card p { margin: 0 0 14px; color: var(--muted); }
.card ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: 15px; }
.card.placeholder { border-style: dashed; }
.tag {
  font-family: "JetBrains Mono", monospace; font-size: 12px;
  text-transform: uppercase; letter-spacing: .06em; color: var(--accent) !important;
}

/* About */
.about-grid { display: grid; grid-template-columns: 220px 1fr; gap: 40px; align-items: start; }
.about-grid p { margin: 0 0 16px; }
.photo {
  aspect-ratio: 4 / 5; border-radius: var(--radius); overflow: hidden;
  background: var(--surface); border: 1px solid var(--border);
}
.photo img { width: 100%; height: 100%; object-fit: cover; }
.toolbox { color: var(--muted); font-size: 15px; }

/* Contact */
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; max-width: 720px; }
.form label { display: grid; gap: 6px; font-weight: 500; font-size: 14px; color: var(--muted); }
.form .full { grid-column: 1 / -1; }
.form input, .form textarea {
  font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px;
}
.form input:focus, .form textarea:focus { outline: 2px solid var(--accent); border-color: transparent; }
.form button { justify-self: start; }

/* Footer */
.footer { border-top: 1px solid var(--border); padding: 28px 0; color: var(--muted); font-size: 14px; }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.footer p { margin: 0; }

@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; }
  .hero-visual img { max-width: 380px; }
  .proof, .grid.four, .steps, .uses { grid-template-columns: repeat(2, 1fr); }
  .build-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .nav nav a:not(.btn) { display: none; }
  .hero { padding: 56px 20px 40px; }
  .proof, .grid.four, .steps, .uses { grid-template-columns: 1fr; }
  .band { padding: 26px 22px; }
  .mini-stats { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .photo { max-width: 200px; }
  .form { grid-template-columns: 1fr; }
  .grid.two { grid-template-columns: 1fr; }
  .card.wide { display: block; }
  .card.wide .shot { width: calc(100% + 52px); height: auto; margin: -26px -26px 20px; aspect-ratio: 16 / 9; min-height: 0; border-radius: var(--radius) var(--radius) 0 0; border-right: 0; border-bottom: 1px solid var(--border); }
}