/* ============================================================
   RIVERSTONE COLLECTIVE — design system
   Palette: ink #0B0D0F · basalt #14171B · seam #262C33
            bone #E9E5DC · mist #98A1AA · brass #C3A572
   Type:    Marcellus (display) · Outfit (body)
   ============================================================ */

:root {
  --ink: #0B0D0F;
  --basalt: #14171B;
  --seam: #262C33;
  --bone: #E9E5DC;
  --mist: #98A1AA;
  --brass: #C3A572;
  --brass-deep: #9C7F4E;
  --max: 1080px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--ink);
  color: var(--bone);
  font-family: 'Outfit', system-ui, sans-serif;
  font-weight: 300;
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--brass); color: var(--ink); }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 28px; }

/* ---------- nav ---------- */
nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 13, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--seam);
}
.nav-inner {
  max-width: var(--max); margin: 0 auto; padding: 18px 28px;
  display: flex; align-items: center; justify-content: space-between;
}
.wordmark {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none; color: var(--bone);
}
.wordmark svg { display: block; }
.wordmark span {
  font-family: 'Marcellus', serif;
  font-size: 19px; letter-spacing: 0.14em; text-transform: uppercase;
}
.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a {
  color: var(--mist); text-decoration: none; font-size: 14px;
  letter-spacing: 0.08em; text-transform: uppercase; font-weight: 400;
  transition: color 0.25s ease;
}
.nav-links a:hover, .nav-links a:focus-visible { color: var(--brass); }
.nav-links a.cta {
  color: var(--ink); background: var(--brass);
  padding: 9px 20px; border-radius: 2px; font-weight: 500;
}
.nav-links a.cta:hover, .nav-links a.cta:focus-visible { background: var(--bone); color: var(--ink); }

/* ---------- hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 130px 0 120px;
  border-bottom: 1px solid var(--seam);
}
.hero-contours {
  position: absolute; inset: 0; width: 100%; height: 100%;
  opacity: 0.35; pointer-events: none;
}
.hero-inner { position: relative; text-align: center; max-width: 760px; margin: 0 auto; padding: 0 28px; }
.cairn { margin: 0 auto 36px; display: block; }
.eyebrow {
  font-size: 12px; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--brass); font-weight: 400; margin-bottom: 26px;
}
h1 {
  font-family: 'Marcellus', serif; font-weight: 400;
  font-size: clamp(38px, 6vw, 62px);
  line-height: 1.12; letter-spacing: 0.01em;
  margin-bottom: 26px;
}
.hero p.lede {
  color: var(--mist); font-size: 19px; max-width: 560px; margin: 0 auto 44px;
}
.btn {
  display: inline-block; background: var(--brass); color: var(--ink);
  font-family: 'Outfit', sans-serif; font-weight: 500; font-size: 15px;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 16px 38px; border-radius: 2px; text-decoration: none;
  border: none; cursor: pointer;
  transition: background 0.25s ease, transform 0.25s ease;
}
.btn:hover, .btn:focus-visible { background: var(--bone); transform: translateY(-1px); }

@media (prefers-reduced-motion: no-preference) {
  .rise { opacity: 0; transform: translateY(14px); animation: rise 0.9s ease forwards; }
  .rise.d1 { animation-delay: 0.1s; } .rise.d2 { animation-delay: 0.22s; }
  .rise.d3 { animation-delay: 0.34s; } .rise.d4 { animation-delay: 0.46s; }
  @keyframes rise { to { opacity: 1; transform: none; } }
}

/* ---------- sections ---------- */
section { padding: 96px 0; }
.section-line { border-bottom: 1px solid var(--seam); }
.kicker {
  font-size: 12px; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--brass); margin-bottom: 18px;
}
h2 {
  font-family: 'Marcellus', serif; font-weight: 400;
  font-size: clamp(28px, 4vw, 40px); line-height: 1.2; margin-bottom: 20px;
}
.sub { color: var(--mist); max-width: 620px; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 56px; }
.card {
  background: var(--basalt); border: 1px solid var(--seam);
  border-radius: 3px; padding: 36px 30px;
  transition: border-color 0.3s ease;
}
.card:hover { border-color: var(--brass-deep); }
.card h3 {
  font-family: 'Marcellus', serif; font-weight: 400;
  font-size: 21px; margin-bottom: 12px;
}
.card p { color: var(--mist); font-size: 15.5px; }

.steps { margin-top: 56px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.step { border-top: 1px solid var(--seam); padding-top: 26px; }
.step .num {
  font-family: 'Marcellus', serif; color: var(--brass);
  font-size: 15px; letter-spacing: 0.2em; margin-bottom: 14px;
}
.step h3 { font-family: 'Marcellus', serif; font-weight: 400; font-size: 20px; margin-bottom: 10px; }
.step p { color: var(--mist); font-size: 15.5px; }

/* ---------- form ---------- */
.form-shell {
  background: var(--basalt); border: 1px solid var(--seam);
  border-radius: 4px; padding: 52px; max-width: 680px; margin: 56px auto 0;
}
.field { margin-bottom: 26px; }
label.f-label {
  display: block; font-size: 13px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--mist); margin-bottom: 10px;
}
label.f-label .opt { color: var(--seam); }
input[type="text"], input[type="tel"], input[type="email"] {
  width: 100%; background: var(--ink); border: 1px solid var(--seam);
  border-radius: 2px; padding: 15px 16px; color: var(--bone);
  font-family: 'Outfit', sans-serif; font-size: 16px; font-weight: 300;
  transition: border-color 0.25s ease;
}
input:focus { outline: none; border-color: var(--brass); }
input::placeholder { color: #4A525B; }

.consent {
  display: flex; gap: 14px; align-items: flex-start;
  background: var(--ink); border: 1px solid var(--seam);
  border-radius: 3px; padding: 18px; margin-bottom: 14px;
}
.consent input[type="checkbox"] {
  width: 18px; height: 18px; margin-top: 3px; flex-shrink: 0;
  accent-color: var(--brass); cursor: pointer;
}
.consent label { font-size: 14px; color: var(--mist); cursor: pointer; }
.consent a { color: var(--brass); text-decoration: none; }
.consent a:hover { text-decoration: underline; }

.disclosure { font-size: 12.5px; color: #6B747E; margin-top: 20px; line-height: 1.65; }
.disclosure a { color: var(--brass); text-decoration: none; }

.form-shell .btn { width: 100%; margin-top: 28px; }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--seam); padding: 56px 0 64px; }
.foot {
  max-width: var(--max); margin: 0 auto; padding: 0 28px;
  display: flex; justify-content: space-between; align-items: flex-start; gap: 40px; flex-wrap: wrap;
}
.foot .fm { font-family: 'Marcellus', serif; letter-spacing: 0.14em; text-transform: uppercase; font-size: 16px; margin-bottom: 10px; }
.foot p, .foot a { color: var(--mist); font-size: 14px; text-decoration: none; }
.foot a:hover { color: var(--brass); }
.foot-links { display: flex; flex-direction: column; gap: 8px; }

/* ---------- legal pages ---------- */
.legal { max-width: 780px; margin: 0 auto; padding: 80px 28px 110px; }
.legal h1 { font-size: clamp(32px, 5vw, 46px); margin-bottom: 10px; }
.legal .updated { color: var(--mist); font-size: 14px; margin-bottom: 54px; letter-spacing: 0.05em; }
.legal h2 { font-size: 24px; margin: 48px 0 14px; }
.legal p, .legal li { color: var(--mist); font-size: 16px; margin-bottom: 14px; }
.legal ul { padding-left: 22px; margin-bottom: 16px; }
.legal a { color: var(--brass); text-decoration: none; }
.legal a:hover { text-decoration: underline; }
.legal strong { color: var(--bone); font-weight: 500; }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .cards, .steps { grid-template-columns: 1fr; }
  .form-shell { padding: 34px 24px; }
  .nav-links { gap: 18px; }
  .nav-links a:not(.cta) { display: none; }
  .hero { padding: 90px 0 80px; }
  section { padding: 70px 0; }
}