@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&family=DM+Mono:wght@400;500&display=swap');

:root {
  --bg: #f7f4ef;
  --bg2: #edeae3;
  --ink: #1a1714;
  --ink-mid: #4a4540;
  --ink-dim: #8a837a;
  --accent: #c84b2f;
  --accent-dark: #9a3520;
  --accent-light: #f5ede9;
  --border: #d9d4cc;
  --white: #fdfcfa;
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'DM Mono', monospace;
  --measure: 68ch;
  --wide: 1100px;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ─── LAYOUT ──────────────────────────────────── */
.site-wrap { max-width: var(--wide); margin: 0 auto; padding: 0 2rem; }
.narrow { max-width: var(--measure); margin-left: auto; margin-right: auto; }

/* ─── NAV ─────────────────────────────────────── */
nav {
  border-bottom: 1px solid var(--border);
  padding: 1.2rem 0;
  position: sticky; top: 0; z-index: 50;
  background: rgba(247,244,239,.92);
  backdrop-filter: blur(8px);
}

.nav-inner {
  max-width: var(--wide); margin: 0 auto; padding: 0 2rem;
  display: flex; align-items: center; justify-content: space-between;
}

.wordmark {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -.01em;
  line-height: 1;
}

.wordmark span { color: var(--accent); }

.nav-links {
  display: flex; align-items: center; gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: .8rem;
  font-weight: 400;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-mid);
  text-decoration: none;
  transition: color .15s;
}
.nav-links a:hover { color: var(--accent); }

/* ─── HERO ────────────────────────────────────── */
.hero {
  padding: 7rem 0 6rem;
  border-bottom: 1px solid var(--border);
  position: relative; overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 80% 50%, rgba(200,75,47,.06) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(200,75,47,.04) 0%, transparent 50%);
  pointer-events: none;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  display: block;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--ink);
  max-width: 14ch;
  margin-bottom: 1.8rem;
}

.hero h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--ink-mid);
  max-width: 48ch;
  line-height: 1.65;
  margin-bottom: 2.5rem;
  font-weight: 300;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }

.btn-primary {
  background: var(--ink);
  color: var(--white);
  padding: .75rem 1.6rem;
  font-family: var(--font-body);
  font-size: .85rem;
  font-weight: 500;
  letter-spacing: .04em;
  text-decoration: none;
  border: none; cursor: pointer;
  transition: background .2s, transform .1s;
  display: inline-block;
}
.btn-primary:hover { background: var(--accent); }
.btn-primary:active { transform: scale(.98); }

.btn-ghost {
  background: transparent;
  color: var(--ink-mid);
  padding: .75rem 1.6rem;
  font-family: var(--font-body);
  font-size: .85rem;
  font-weight: 400;
  letter-spacing: .04em;
  text-decoration: none;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color .2s, color .2s;
  display: inline-block;
}
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }

/* ─── SECTIONS ────────────────────────────────── */
section { padding: 5rem 0; border-bottom: 1px solid var(--border); }
section:last-of-type { border-bottom: none; }

.section-label {
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  display: block;
}

h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--ink);
  margin-bottom: 1.5rem;
}

h2 em { font-style: italic; color: var(--accent); }

p {
  font-size: 1.05rem;
  color: var(--ink-mid);
  max-width: 60ch;
  margin-bottom: 1.2rem;
  font-weight: 300;
}

p:last-child { margin-bottom: 0; }

/* ─── HOW IT WORKS ────────────────────────────── */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0;
  margin-top: 3rem;
  border: 1px solid var(--border);
}

.step-card {
  padding: 2rem;
  border-right: 1px solid var(--border);
  position: relative;
}
.step-card:last-child { border-right: none; }

.step-num {
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .2em;
  color: var(--accent);
  margin-bottom: .8rem;
  display: block;
}

.step-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--ink);
  margin-bottom: .6rem;
  line-height: 1.2;
}

.step-card p {
  font-size: .9rem;
  margin: 0;
  line-height: 1.55;
}

.step-card.highlight {
  background: var(--accent-light);
  border-color: var(--accent);
}

.step-card.highlight .step-num { color: var(--accent-dark); }
.step-card.highlight h3 { color: var(--accent-dark); }

/* ─── SCIENCE CALLOUT ─────────────────────────── */
.science-block {
  background: var(--white);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  padding: 2.5rem;
  margin: 2.5rem 0;
}

.science-block blockquote {
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1.4;
  color: var(--ink);
  font-style: italic;
  margin-bottom: 1rem;
  max-width: 56ch;
}

.science-block cite {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--ink-dim);
  font-style: normal;
}

/* ─── PRIVACY SECTION ─────────────────────────── */
.privacy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2.5rem;
}

@media(max-width: 600px) { .privacy-grid { grid-template-columns: 1fr; } }

.privacy-item {
  padding: 1.5rem;
  background: var(--bg2);
  border: 1px solid var(--border);
}

.privacy-item .icon {
  font-size: 1.2rem;
  margin-bottom: .6rem;
  display: block;
}

.privacy-item h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--ink);
  margin-bottom: .4rem;
}

.privacy-item p { font-size: .88rem; margin: 0; }

/* ─── NEWSLETTER ──────────────────────────────── */
.newsletter-section {
  background: var(--ink);
  color: var(--white);
  padding: 5rem 0;
  border-bottom: none;
}

.newsletter-section .section-label { color: var(--accent); }
.newsletter-section h2 { color: var(--white); }
.newsletter-section p { color: rgba(253,252,250,.65); max-width: 48ch; }

.newsletter-form {
  display: flex; gap: .75rem; margin-top: 2rem; flex-wrap: wrap;
}

.newsletter-form input {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.2);
  color: var(--white);
  padding: .75rem 1rem;
  font-family: var(--font-body);
  font-size: .9rem;
  font-weight: 300;
  outline: none;
  width: 280px;
  transition: border-color .2s;
}

.newsletter-form input::placeholder { color: rgba(255,255,255,.35); }
.newsletter-form input:focus { border-color: var(--accent); }

.newsletter-form button {
  background: var(--accent);
  color: var(--white);
  border: none;
  padding: .75rem 1.6rem;
  font-family: var(--font-body);
  font-size: .85rem;
  font-weight: 500;
  letter-spacing: .04em;
  cursor: pointer;
  transition: background .2s;
}
.newsletter-form button:hover { background: var(--accent-dark); }

.newsletter-note {
  font-size: .75rem;
  color: rgba(253,252,250,.4);
  margin-top: .75rem;
  margin-bottom: 0;
}

/* ─── FOOTER ──────────────────────────────────── */
footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: var(--wide); margin: 0 auto; padding: 0 2rem;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 1rem;
}

.footer-copy {
  font-size: .78rem;
  color: var(--ink-dim);
}

.footer-links {
  display: flex; gap: 1.5rem; list-style: none;
}
.footer-links a {
  font-size: .78rem;
  color: var(--ink-dim);
  text-decoration: none;
  transition: color .15s;
}
.footer-links a:hover { color: var(--accent); }

/* ─── BLOG LIST ───────────────────────────────── */
.blog-grid { margin-top: 3rem; }

.blog-card {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: start;
  text-decoration: none;
  color: inherit;
  transition: none;
}

.blog-card:hover .blog-card-title { color: var(--accent); }

.blog-card-meta {
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .15em;
  color: var(--ink-dim);
  text-transform: uppercase;
  margin-bottom: .5rem;
  display: block;
}

.blog-card-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: .6rem;
  transition: color .15s;
}

.blog-card-excerpt {
  font-size: .92rem;
  color: var(--ink-mid);
  max-width: 55ch;
  line-height: 1.6;
  margin: 0;
}

.blog-card-arrow {
  font-size: 1.2rem;
  color: var(--border);
  padding-top: .3rem;
  transition: color .15s, transform .15s;
}
.blog-card:hover .blog-card-arrow { color: var(--accent); transform: translateX(4px); }

/* ─── BLOG POST ───────────────────────────────── */
.post-header {
  padding: 5rem 0 3rem;
  border-bottom: 1px solid var(--border);
}

.post-eyebrow {
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  display: block;
}

.post-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--ink);
  margin-bottom: 1.5rem;
  max-width: 18ch;
}

.post-meta {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--ink-dim);
  text-transform: uppercase;
}

.post-body {
  padding: 3.5rem 0 5rem;
}

.post-body h2 {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  margin-top: 3rem;
  margin-bottom: 1rem;
}

.post-body p {
  max-width: var(--measure);
  margin-bottom: 1.4rem;
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--ink-mid);
}

.post-body p strong { color: var(--ink); font-weight: 500; }

.post-sources {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.post-sources h4 {
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 1rem;
}

.post-sources ul {
  list-style: none;
  padding: 0;
}

.post-sources li {
  font-size: .82rem;
  color: var(--ink-dim);
  margin-bottom: .5rem;
  padding-left: 1rem;
  border-left: 2px solid var(--border);
  font-family: var(--font-mono);
  line-height: 1.5;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--ink-dim);
  text-decoration: none;
  margin-bottom: 2rem;
  transition: color .15s;
}
.back-link:hover { color: var(--accent); }

/* ─── PAGE HERO (blog, etc.) ──────────────────── */
.page-hero {
  padding: 5rem 0 3rem;
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -.02em;
  color: var(--ink);
  margin-bottom: .75rem;
}

.page-hero p {
  font-size: 1rem;
  color: var(--ink-mid);
  margin: 0;
}

/* ─── ANIMATIONS ──────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero h1, .hero-sub, .hero-actions {
  animation: fadeUp .6s ease both;
}
.hero-sub { animation-delay: .1s; }
.hero-actions { animation-delay: .2s; }

/* ─── RESPONSIVE ──────────────────────────────── */
@media(max-width: 768px) {
  .steps { grid-template-columns: 1fr; }
  .step-card { border-right: none; border-bottom: 1px solid var(--border); }
  .step-card:last-child { border-bottom: none; }
  .blog-card { grid-template-columns: 1fr; }
  .blog-card-arrow { display: none; }
  .newsletter-form input { width: 100%; }
  .nav-links { gap: 1.2rem; }
}

/* ─── NAV DATE ─────────────────────────────────── */
.nav-date {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .15em;
  color: var(--ink-dim);
  text-transform: uppercase;
  white-space: nowrap;
}

@media(max-width: 640px) {
  .nav-date { display: none; }
}

/* ─── TRADEMARK SYMBOL ─────────────────────────── */
.wordmark .tm {
  font-size: .3em;
  vertical-align: super;
  color: var(--ink-dim);
  font-family: var(--font-body);
  font-weight: 400;
  margin-left: 1px;
}
.footer-copy .tm {
  font-size: .7em;
  vertical-align: super;
}