:root {
  --bg: #f7f6f3;
  --ink: #161616;
  --muted: #5c5c5c;
  --line: #e4e1da;
  --card: #ffffff;
  --accent: #1a1a1a;
  --max: 1080px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: "Avenir Next", "Segoe UI", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.wrap { width: min(var(--max), calc(100% - 2.5rem)); margin: 0 auto; }

.top {
  border-bottom: 1px solid var(--line);
  background: rgba(247,246,243,.92);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 1rem;
}
.logo {
  text-decoration: none;
  font-weight: 650;
  letter-spacing: -0.02em;
}
.nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.95rem;
}
.nav a { text-decoration: none; color: var(--muted); }
.nav a:hover { color: var(--ink); }

.hero { padding: 5.5rem 0 4rem; }
.eyebrow {
  margin: 0 0 1rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}
.hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  max-width: 14ch;
}
.lead {
  margin: 1.5rem 0 0;
  max-width: 42rem;
  color: var(--muted);
  font-size: 1.08rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1.2rem;
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid transparent;
  font: inherit;
  cursor: pointer;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-ghost { border-color: var(--line); background: transparent; }
.btn-ghost:hover { border-color: #bbb; }

.stages, .materials, .contact { padding: 1rem 0 4.5rem; }
.stages h2, .materials h2, .contact h2 {
  margin: 0 0 1.5rem;
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  letter-spacing: -0.02em;
}
.section-lead { margin: -0.5rem 0 1.5rem; color: var(--muted); max-width: 36rem; }

.stage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.stage {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.4rem 1.35rem 1.5rem;
  min-height: 100%;
}
.stage-num {
  margin: 0 0 1.2rem;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}
.stage h3 {
  margin: 0 0 1rem;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.stage ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}
.stage li + li { margin-top: 0.45rem; }
.result {
  margin: 1.25rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.98rem;
}
.result span {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.material-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.material {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.35rem 1.4rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--card);
  text-decoration: none;
}
.material:hover { border-color: #cfcac0; }
.material-label {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.material-title { font-weight: 600; letter-spacing: -0.01em; }

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2rem;
  align-items: start;
}
.contacts {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}
.contacts li {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 0.75rem;
  padding: 0.7rem 0;
  border-top: 1px solid var(--line);
}
.contacts li:last-child { border-bottom: 1px solid var(--line); }
.contacts span { color: var(--muted); }
.contacts a { text-decoration: none; }

.form {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.4rem;
  display: grid;
  gap: 0.9rem;
}
.form label {
  display: grid;
  gap: 0.4rem;
  color: var(--muted);
  font-size: 0.92rem;
}
.form input[type="text"],
.form input[type="tel"] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.85rem 0.95rem;
  font: inherit;
  color: var(--ink);
  background: #fff;
}
.form input:focus {
  outline: 2px solid #d8d3c8;
  outline-offset: 1px;
}
.check {
  display: grid !important;
  grid-template-columns: auto 1fr;
  gap: 0.7rem;
  align-items: start;
  color: var(--muted);
  font-size: 0.9rem;
}
.check input { margin-top: 0.2rem; }
.hp {
  position: absolute !important;
  left: -9999px !important;
  opacity: 0 !important;
  height: 0 !important;
  width: 0 !important;
}
.form-note { margin: 0; color: var(--muted); font-size: 0.92rem; }
.form-note.ok { color: #1f5c3a; }
.form-note.err { color: #8a2b2b; }

.footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 2.5rem;
  color: var(--muted);
  font-size: 0.92rem;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-brand {
  margin: 0 0 0.35rem;
  color: var(--ink);
  font-weight: 600;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.footer-links a { text-decoration: none; }

@media (max-width: 860px) {
  .stage-grid,
  .material-row,
  .contact-grid { grid-template-columns: 1fr; }
  .nav { display: none; }
  .hero { padding-top: 3.5rem; }
  .contacts li { grid-template-columns: 1fr; gap: 0.2rem; }
}