:root {
  --bg: #050914;
  --panel: rgba(9, 18, 32, 0.78);
  --panel-strong: rgba(11, 23, 39, 0.92);
  --text: #e7f0fb;
  --muted: #9fb2c7;
  --blueprint: #60d5ff;
  --amber: #f8c15c;
  --green: #77f2b0;
  --steel: #6f8298;
  --border: rgba(175, 220, 255, 0.18);
  --shadow: 0 24px 80px rgba(0,0,0,.45);
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at 20% 0%, #16365c 0, transparent 34rem), var(--bg);
  color: var(--text);
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
.noise { position: fixed; inset: 0; pointer-events: none; opacity: .18; z-index: 5; background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px); background-size: 32px 32px; mask-image: linear-gradient(to bottom, black, transparent 80%); }
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 20; display:flex; justify-content:space-between; align-items:center; gap: 1rem; padding: 1rem clamp(1rem, 3vw, 3rem); background: linear-gradient(to bottom, rgba(5,9,20,.9), rgba(5,9,20,.35)); backdrop-filter: blur(14px); border-bottom: 1px solid rgba(255,255,255,.06); }
.brand { display:flex; align-items:center; gap:.65rem; font-weight:700; letter-spacing:.03em; }
.brand-mark { display:grid; place-items:center; width:2.25rem; height:2.25rem; border:1px solid var(--blueprint); color:var(--amber); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
nav { display:flex; gap: clamp(.5rem, 2vw, 1.4rem); color: var(--muted); font-size: .92rem; }
nav a:hover { color: var(--text); }
.section-layer { min-height: 100vh; position: relative; display: grid; align-items: center; padding: 7rem clamp(1rem, 5vw, 5rem); }
.hero { grid-template-columns: minmax(0, 1fr) minmax(20rem, 38rem); gap: 4rem; }
.eyebrow { margin:0 0 1rem; color: var(--amber); text-transform: uppercase; letter-spacing: .18em; font: 700 .75rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(3rem, 7vw, 6.8rem); line-height: .9; max-width: 11ch; letter-spacing: -.07em; }
h2 { font-size: clamp(2.1rem, 5vw, 4.5rem); line-height: .95; letter-spacing: -.05em; margin-bottom: .5rem; }
h3 { font-size: clamp(1.2rem, 2vw, 1.7rem); color: #cfe4f8; font-weight: 650; }
.lede, .project-card p, .td-card p { color: var(--muted); font-size: clamp(1.05rem, 1.5vw, 1.25rem); line-height: 1.65; max-width: 62ch; }
.hero-actions { display:flex; gap:1rem; flex-wrap:wrap; margin-top:2rem; }
.button { padding:.85rem 1.1rem; border:1px solid var(--border); border-radius:999px; font-weight:700; }
.button.primary { background: var(--amber); color:#111827; border-color: transparent; }
.button.ghost { background: rgba(255,255,255,.04); }
.hero-panel, .visual-card, .project-card, .td-card { background: var(--panel); border: 1px solid var(--border); box-shadow: var(--shadow); backdrop-filter: blur(16px); }
.hero-panel { border-radius: 1.6rem; overflow:hidden; }
.hero-panel svg { width:100%; display:block; }
.drill-track { position: fixed; top: 0; left: 50%; height: 100vh; width: 160px; transform: translateX(-50%); pointer-events: none; z-index: 8; opacity:.95; }
.drill-string { position:absolute; top: 100px; left: 50%; width: 8px; height: var(--drill-height, 120px); transform: translateX(-50%); background: repeating-linear-gradient(to bottom, #9fb2c7 0 18px, #5d7288 18px 30px); box-shadow:0 0 18px rgba(96,213,255,.18); }
.bit { position:absolute; top: calc(100px + var(--drill-height, 120px)); left:50%; width:42px; height:56px; transform: translateX(-50%) rotate(var(--bit-rotate, 0deg)); clip-path: polygon(50% 100%, 0 28%, 24% 0, 50% 22%, 76% 0, 100% 28%); background: linear-gradient(135deg, #f8c15c, #8a6424); filter: drop-shadow(0 0 18px rgba(248,193,92,.35)); }
.depth-scale { position:absolute; top: 13vh; left: 98px; display:flex; flex-direction:column; justify-content:space-between; height:74vh; color: rgba(231,240,251,.5); font: 700 .68rem ui-monospace, SFMono-Regular, Menlo, monospace; }
.project { grid-template-columns: minmax(0, 1.05fr) minmax(18rem, .85fr); gap: clamp(1.5rem, 5vw, 5rem); isolation:isolate; }
.project::before { content:""; position:absolute; inset:0; z-index:-1; background: repeating-linear-gradient(172deg, rgba(255,255,255,.045) 0 2px, transparent 2px 70px), radial-gradient(circle at 82% 25%, rgba(96,213,255,.14), transparent 26rem); }
.layer-sand { background-color:#10131b; }
.layer-shale { background-color:#0c1420; }
.layer-limestone { background-color:#111724; }
.layer-basalt { background-color:#080d14; }
.depth-label { position:absolute; left:clamp(1rem, 4vw, 3rem); top:7rem; color: var(--green); font: 800 .85rem ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing:.16em; }
.project-card { padding: clamp(1.5rem, 4vw, 3rem); border-radius: 1.4rem; max-width: 45rem; }
ul { margin: 1.5rem 0 0; padding:0; list-style:none; color:#c9d8e8; }
li { margin:.8rem 0; padding-left:1.6rem; position:relative; }
li::before { content:"▸"; color:var(--amber); position:absolute; left:0; }
.visual-card { min-height: 22rem; border-radius:1.4rem; position:relative; overflow:hidden; display:grid; place-items:center; }
.compare-visual { grid-template-columns:1fr 1fr; gap:1px; background:#07101d; }
.photo { width:100%; height:100%; display:grid; place-items:center; color:rgba(255,255,255,.68); font:800 .9rem ui-monospace, monospace; background: linear-gradient(135deg, rgba(96,213,255,.12), rgba(248,193,92,.08)); }
.after { background: linear-gradient(135deg, rgba(119,242,176,.12), rgba(96,213,255,.08)); }
.reticle { position:absolute; width:72%; aspect-ratio:1; border:1px solid rgba(248,193,92,.8); border-radius:50%; }
.reticle::before,.reticle::after { content:""; position:absolute; background:rgba(248,193,92,.65); }
.reticle::before { width:100%; height:1px; top:50%; }
.reticle::after { height:100%; width:1px; left:50%; }
.runway { width:70%; height:80%; clip-path: polygon(42% 0, 58% 0, 86% 100%, 14% 100%); background: repeating-linear-gradient(to bottom, transparent 0 34px, rgba(248,193,92,.8) 34px 48px), #101b2d; border:1px solid var(--border); }
.log-lines { position:absolute; right:10%; width:32%; display:grid; gap:1rem; }
.log-lines span { display:block; height:12px; background:rgba(96,213,255,.35); border-radius:999px; }
.rib-visual { display:flex; align-items:center; justify-content:center; gap:1.2rem; }
.rib-visual span { width:14%; height:62%; border:3px solid rgba(96,213,255,.65); border-radius: 50% 50% 45% 45%; transform:skewX(-10deg); }
.calc-visual { padding:2rem; }
.screen { width:80%; padding:1rem; border:1px solid var(--green); color:var(--green); font:800 3rem ui-monospace, monospace; text-align:right; background:rgba(119,242,176,.06); }
.keys { margin-top:1.5rem; display:grid; grid-template-columns: repeat(3, 1fr); gap:.8rem; width:80%; }
.keys i { height:2.5rem; border-radius:.5rem; border:1px solid var(--border); background:rgba(255,255,255,.06); }
.td { min-height: 88vh; display:grid; place-items:center; background: radial-gradient(circle at center, rgba(248,193,92,.14), transparent 38rem), #050914; }
.td-card { max-width: 62rem; padding: clamp(1.5rem, 5vw, 4rem); border-radius:1.6rem; text-align:center; }
.link-grid { display:grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap:.75rem; margin-top:2rem; }
.link-grid a { border:1px solid var(--border); padding:.9rem .75rem; border-radius:.8rem; background:rgba(255,255,255,.04); color:#d9eaff; font-weight:700; }
.link-grid a:hover { border-color:var(--blueprint); }
@media (max-width: 900px) {
  .site-header { align-items:flex-start; }
  nav { display:none; }
  .hero, .project { grid-template-columns:1fr; }
  .drill-track { left:auto; right: 0; transform:none; opacity:.5; }
  .depth-scale { display:none; }
  .link-grid { grid-template-columns:1fr; }
  h1 { max-width: 12ch; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior:auto; }
  .bit { transform: translateX(-50%); }
}