/* Quant Solvent LLC — brand styles
   Palette: teal #3ca0a0, slate #3c3c50 */

:root {
  --teal: #3ca0a0;
  --teal-dark: #2f8080;
  --teal-light: #5bb8b8;
  --slate: #3c3c50;
  --slate-deep: #2a2a38;
  --ink: #1d1d28;
  --paper: #ffffff;
  --mist: #f4f7f7;
  --line: #e3e9e9;
  --muted: #6a6a78;
  --radius: 14px;
  --maxw: 1080px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--teal-dark); text-decoration: none; }
a:hover { color: var(--teal); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
header.site {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav .brand img { height: 30px; display: block; }
.nav nav { display: flex; gap: 28px; align-items: center; }
.nav nav a {
  color: var(--slate);
  font-weight: 500;
  font-size: 0.95rem;
}
.nav nav a.cta {
  background: var(--teal);
  color: #fff;
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 600;
}
.nav nav a.cta:hover { background: var(--teal-dark); color: #fff; }
.menu-toggle { display: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(900px 500px at 78% -10%, rgba(60,160,160,0.16), transparent 60%),
    linear-gradient(180deg, #fafcfc 0%, #ffffff 100%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.hero .wrap { padding-top: 96px; padding-bottom: 96px; }
.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--teal-dark);
  background: rgba(60,160,160,0.10);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 17ch;
  font-weight: 800;
}
.hero h1 .accent { color: var(--teal); }
.hero p.lede {
  margin-top: 22px;
  font-size: 1.18rem;
  color: var(--muted);
  max-width: 56ch;
}
.hero .actions { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero-promise {
  margin-top: 26px; display: flex; align-items: center; gap: 10px;
  font-size: 0.98rem; color: var(--slate); font-weight: 500;
}
.hero-promise .dot {
  width: 9px; height: 9px; border-radius: 50%; background: var(--teal);
  box-shadow: 0 0 0 4px rgba(60,160,160,0.18); flex: 0 0 auto;
}

.btn {
  display: inline-block;
  font-weight: 600;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 1rem;
  transition: transform 0.05s ease, background 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--teal); color: #fff; }
.btn-primary:hover { background: var(--teal-dark); color: #fff; }
.btn-ghost { background: #fff; color: var(--slate); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--teal); color: var(--teal-dark); }

/* ---------- Sections ---------- */
section { padding: 84px 0; }
section.alt { background: var(--mist); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 60ch; margin-bottom: 48px; }
.section-head .kicker {
  font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase;
  font-weight: 700; color: var(--teal-dark); margin-bottom: 12px;
}
.section-head h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.3rem);
  letter-spacing: -0.015em; color: var(--ink); font-weight: 800;
}
.section-head p { margin-top: 14px; color: var(--muted); font-size: 1.08rem; }

/* ---------- Services grid ---------- */
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.card:hover {
  border-color: var(--teal-light);
  box-shadow: 0 14px 36px -20px rgba(60,160,160,0.5);
  transform: translateY(-2px);
}
.card .node {
  width: 42px; height: 42px; border-radius: 11px;
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-dark) 100%);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.card .node svg { width: 22px; height: 22px; stroke: #fff; fill: none; stroke-width: 2; }
.card h3 { font-size: 1.18rem; color: var(--ink); margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 0.98rem; }

/* ---------- Engagement / pricing ---------- */
.eng-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.eng {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px;
}
.eng h3 { font-size: 1.1rem; color: var(--slate); margin-bottom: 10px; }
.eng .price { font-size: 1.05rem; font-weight: 700; color: var(--teal-dark); margin-bottom: 12px; }
.eng ul { list-style: none; }
.eng li { color: var(--muted); font-size: 0.96rem; padding: 6px 0 6px 22px; position: relative; }
.eng li::before {
  content: ""; position: absolute; left: 0; top: 13px;
  width: 8px; height: 8px; border-radius: 50%; background: var(--teal);
}

/* ---------- SOW banner ---------- */
.sow-banner {
  display: flex; align-items: center; gap: 22px;
  background: linear-gradient(135deg, var(--slate) 0%, var(--slate-deep) 100%);
  color: #fff; border-radius: var(--radius); padding: 26px 30px; margin-bottom: 32px;
}
.sow-badge {
  flex: 0 0 auto; background: var(--teal); color: #fff; font-weight: 800;
  font-size: 0.82rem; letter-spacing: 0.04em; text-transform: uppercase;
  padding: 10px 16px; border-radius: 999px; white-space: nowrap;
}
.sow-copy strong { display: block; font-size: 1.08rem; margin-bottom: 3px; }
.sow-copy span { color: #c4c8d4; font-size: 0.98rem; }
@media (max-width: 560px) { .sow-banner { flex-direction: column; align-items: flex-start; gap: 14px; } }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: start; }
.about-grid p { color: var(--muted); font-size: 1.05rem; margin-bottom: 16px; }
.facts {
  background: var(--slate); color: #fff; border-radius: var(--radius); padding: 32px;
}
.facts h3 { font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--teal-light); margin-bottom: 18px; }
.facts dl { display: grid; grid-template-columns: auto; gap: 14px; }
.facts dt { font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.08em; color: #9aa0b0; }
.facts dd { font-size: 1rem; color: #fff; margin-top: 2px; }
.facts a { color: var(--teal-light); }

/* ---------- Contact ---------- */
.contact-card {
  background: linear-gradient(135deg, var(--slate) 0%, var(--slate-deep) 100%);
  color: #fff; border-radius: 20px; padding: 56px; text-align: center;
}
.contact-card h2 { font-size: clamp(1.7rem, 3.5vw, 2.3rem); margin-bottom: 14px; }
.contact-card p { color: #c4c8d4; font-size: 1.1rem; max-width: 52ch; margin: 0 auto 28px; }
.contact-card .btn-primary { background: var(--teal); }
.contact-card .btn-primary:hover { background: var(--teal-light); }
.contact-card .addr { margin-top: 26px; font-size: 0.95rem; color: #9aa0b0; }

/* ---------- Footer ---------- */
footer.site {
  background: var(--ink); color: #b8bcc8; padding: 48px 0 36px;
}
footer.site .cols { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
footer.site img { height: 30px; opacity: 0.95; margin-bottom: 14px; }
footer.site .tag { font-size: 0.92rem; color: #8a8e9c; max-width: 40ch; }
footer.site nav { display: flex; gap: 24px; flex-wrap: wrap; }
footer.site nav a { color: #b8bcc8; font-size: 0.92rem; }
footer.site nav a:hover { color: var(--teal-light); }
footer.site .legal {
  margin-top: 36px; padding-top: 22px; border-top: 1px solid #33333f;
  font-size: 0.85rem; color: #7a7e8c; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}

/* ---------- Legal/content pages ---------- */
.legal-page { padding: 64px 0 96px; }
.legal-page .wrap { max-width: 760px; }
.legal-page h1 { font-size: 2.2rem; letter-spacing: -0.02em; margin-bottom: 8px; color: var(--ink); }
.legal-page .updated { color: var(--muted); font-size: 0.92rem; margin-bottom: 36px; }
.legal-page h2 { font-size: 1.3rem; margin: 34px 0 12px; color: var(--slate); }
.legal-page p, .legal-page li { color: #41414e; margin-bottom: 12px; }
.legal-page ul { padding-left: 22px; margin-bottom: 12px; }
.legal-page .back { display: inline-block; margin-bottom: 28px; font-weight: 600; }

/* ---------- Pillar / content pages ---------- */
.pillar { padding: 56px 0 80px; }
.pillar .wrap { max-width: 800px; }
.pillar .crumb { font-size: 0.85rem; color: var(--muted); margin-bottom: 18px; }
.pillar .crumb a { color: var(--teal-dark); }
.pillar h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); letter-spacing: -0.02em; color: var(--ink); margin-bottom: 14px; line-height: 1.15; }
.pillar .lede { font-size: 1.12rem; color: #41414e; margin-bottom: 8px; }
.pillar h2 { font-size: 1.35rem; color: var(--slate); margin: 38px 0 12px; letter-spacing: -0.01em; }
.pillar p, .pillar li { color: #41414e; margin-bottom: 12px; font-size: 1.02rem; }
.pillar ul, .pillar ol { padding-left: 24px; margin-bottom: 14px; }
.pillar li { margin-bottom: 7px; }
.pillar table { width: 100%; border-collapse: collapse; margin: 18px 0 22px; font-size: 0.95rem; }
.pillar th { text-align: left; background: var(--mist); color: var(--slate); padding: 10px 12px; border: 1px solid var(--line); }
.pillar td { padding: 10px 12px; border: 1px solid var(--line); color: #41414e; }
.defn {
  background: var(--mist); border-left: 4px solid var(--teal);
  padding: 14px 18px; border-radius: 0 10px 10px 0; margin: 18px 0;
}
.defn p { margin: 0; font-size: 0.98rem; }
.faq-item { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq-item h3 { font-size: 1.08rem; color: var(--ink); margin-bottom: 8px; }
.faq-item p { margin-bottom: 0; }
.cta-box {
  background: linear-gradient(135deg, var(--slate) 0%, var(--slate-deep) 100%);
  color: #fff; border-radius: 16px; padding: 34px; margin-top: 44px; text-align: center;
}
.cta-box h2 { color: #fff; margin: 0 0 10px; font-size: 1.4rem; }
.cta-box p { color: #c4c8d4; margin-bottom: 20px; }
.cta-box .btn-primary { background: var(--teal); }
.cta-box .btn-primary:hover { background: var(--teal-light); }
.cta-box .alt-action { display: block; margin-top: 14px; font-size: 0.92rem; color: #9aa0b0; }
.cta-box .alt-action a { color: var(--teal-light); }
.related { margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line); }
.related h2 { margin-top: 0; font-size: 1.1rem; }
.related ul { list-style: none; padding: 0; }
.related li { padding: 4px 0; }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .grid, .eng-grid, .about-grid { grid-template-columns: 1fr; }
  .nav { flex-wrap: wrap; height: auto; min-height: 60px; padding: 10px 0; row-gap: 6px; }
  .nav .brand img { height: 24px; }
  .nav nav { display: none; }
  /* Pages without the hamburger (pillars, about, legal) keep their compact nav visible */
  .nav nav:not(#navmenu) { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
  .nav nav:not(#navmenu) a { font-size: 0.85rem; }
  .nav nav:not(#navmenu) a.cta { padding: 7px 12px; }
  .nav nav.open {
    display: flex; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0; background: #fff; border-bottom: 1px solid var(--line);
    padding: 8px 24px 16px;
  }
  .nav nav.open a { padding: 12px 0; width: 100%; }
  .menu-toggle {
    display: block; background: none; border: 0; cursor: pointer;
    font-size: 1.4rem; color: var(--slate); line-height: 1;
  }
  .contact-card { padding: 40px 24px; }
  section { padding: 60px 0; }
}