/* Narranj — consulting and execution for autonomous scientific discovery. */

:root {
  --paper: #f7f4ef;
  --paper-2: #efeae2;
  --ink: #171411;
  --muted: #6f675f;
  --line: rgba(23, 20, 17, 0.12);
  --accent: #ff5c08;
  --accent-deep: #d62c01;
  --header-h: 4.5rem;
  --max: 68rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --serif: "Cormorant Garamond", "Iowan Old Style", "Palatino Linotype", Palatino, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--muted);
  background: var(--paper);
  min-height: 100vh;
  padding-top: var(--header-h);
}

a {
  color: var(--ink);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
  text-decoration-color: rgba(23, 20, 17, 0.28);
}
a:hover { color: var(--accent-deep); text-decoration-color: var(--accent); }

h1, h2, h3 {
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0;
}

img { max-width: 100%; display: block; }

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  padding: 0.55rem 0.9rem;
  background: var(--ink);
  color: var(--paper);
  font-weight: 500;
  text-decoration: none;
  border-radius: 4px;
}
.skip-link:focus { top: 0.75rem; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Header */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 20;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
  background: rgba(247, 244, 239, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}
.site-header.is-scrolled { border-bottom-color: var(--line); }

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--ink);
}
.brand img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}
.brand span {
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1;
}

.site-nav {
  display: flex;
  gap: 1.75rem;
}
.site-nav a {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--muted);
}
.site-nav a:hover { color: var(--ink); }

/* Shared */
.eyebrow {
  margin: 0 0 1.1rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-head {
  margin-bottom: 3rem;
}
.section-head h2 {
  font-size: clamp(2.1rem, 4.2vw, 3.15rem);
}

/* Hero */
.hero {
  max-width: 52rem;
  margin: 0 auto;
  padding: clamp(4.5rem, 12vh, 8rem) clamp(1.25rem, 4vw, 3rem) 3.5rem;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 5.4rem);
  font-weight: 500;
  line-height: 1.02;
  margin-bottom: 1.6rem;
}
.hero h1 em {
  font-style: italic;
  font-weight: 500;
  color: var(--ink);
}

.lead {
  margin: 0;
  max-width: 36rem;
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  line-height: 1.65;
}

.hero-404 { min-height: 55vh; }

/* Statement */
.statement {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem) clamp(4rem, 9vh, 6.5rem);
  border-top: 1px solid var(--line);
  padding-top: clamp(3rem, 7vh, 5rem);
}
.statement p {
  margin: 0;
  max-width: 44rem;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.6vw, 1.95rem);
  font-weight: 500;
  line-height: 1.4;
  color: var(--ink);
}

/* Practice */
.practice {
  max-width: var(--max);
  margin: 0 auto;
  padding: 4.5rem clamp(1.25rem, 4vw, 3rem) clamp(4.5rem, 10vh, 7rem);
}

.domains {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}

.domains li {
  padding: 2.1rem 2rem 2.1rem 0;
  border-bottom: 1px solid var(--line);
}
.domains li:nth-child(odd) { padding-right: 2.75rem; border-right: 1px solid var(--line); }
.domains li:nth-child(even) { padding-left: 2.75rem; }

.num {
  display: block;
  margin-bottom: 0.85rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.domains h3 {
  font-size: clamp(1.55rem, 2.4vw, 1.9rem);
  margin-bottom: 0.7rem;
}

.domains p {
  margin: 0;
  max-width: 32rem;
  font-size: 0.98rem;
}

/* Approach */
.approach {
  max-width: var(--max);
  margin: 0 auto;
  padding: 4.5rem clamp(1.25rem, 4vw, 3rem) clamp(4rem, 8vh, 6rem);
}

.approach-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 3.5rem;
  align-items: start;
  margin-bottom: 3.5rem;
}

.approach-lead {
  margin: 0;
  font-size: 1.12rem;
  color: var(--ink);
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.steps li {
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
}
.steps li:last-child { border-bottom: 1px solid var(--line); }

.steps h3 {
  font-size: 1.15rem;
  font-family: var(--sans);
  font-weight: 600;
  letter-spacing: 0.01em;
  margin-bottom: 0.3rem;
}

.steps p { margin: 0; font-size: 0.95rem; }

blockquote {
  margin: 0;
  padding: 2rem 0 0;
  border-top: 1px solid var(--line);
}
blockquote p {
  margin: 0;
  max-width: 48rem;
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2.2vw, 1.65rem);
  font-style: italic;
  font-weight: 500;
  line-height: 1.45;
  color: var(--ink);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2.25rem clamp(1.25rem, 4vw, 3rem) 2.75rem;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.footer-inner img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.footer-inner p {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--ink);
}

.footer-place {
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.footer-inner a {
  margin-left: auto;
  font-size: 0.95rem;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.01em;
}
.footer-inner a:hover { color: var(--accent-deep); }

@media (max-width: 820px) {
  .domains { grid-template-columns: 1fr; }
  .domains li:nth-child(odd),
  .domains li:nth-child(even) {
    padding: 1.75rem 0;
    border-right: none;
  }
  .approach-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .footer-inner a,
  .footer-place { margin-left: 0; width: 100%; }
}

@media (max-width: 520px) {
  .brand span { display: none; }
  .hero h1 { font-size: 2.55rem; }
}