/* ==========================================================================
   CosPeptide — biomaterial direction (v3 sample)
   bone white · deep moss · instrument serif · soft organic texture
   ========================================================================== */

@font-face{font-family:'Instrument Serif';font-style:normal;font-weight:400;font-display:swap;src:url('../assets/fonts/instrument-serif-400-normal.woff2') format('woff2');}
@font-face{font-family:'Instrument Serif';font-style:italic;font-weight:400;font-display:swap;src:url('../assets/fonts/instrument-serif-400-italic.woff2') format('woff2');}
@font-face{font-family:'Manrope';font-style:normal;font-weight:400;font-display:swap;src:url('../assets/fonts/manrope-400-normal.woff2') format('woff2');}
@font-face{font-family:'Manrope';font-style:normal;font-weight:500;font-display:swap;src:url('../assets/fonts/manrope-500-normal.woff2') format('woff2');}
@font-face{font-family:'Manrope';font-style:normal;font-weight:600;font-display:swap;src:url('../assets/fonts/manrope-600-normal.woff2') format('woff2');}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url('../assets/fonts/ibm-plex-mono-400-normal.woff2') format('woff2');}

:root {
  --bone: #f4efe6;
  --bone-2: #faf7f1;
  --paper: #fffdf9;
  --ink: #111a15;
  --ink-2: #33403a;
  --muted: #6d7670;
  --line: #e2dccf;
  --moss: #16362a;
  --moss-2: #0e241b;
  --sage: #9cae9f;
  --clay: #a4664a;
  --serif: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --sans: 'Manrope', -apple-system, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, Consolas, monospace;
  --max: 1240px;
  --gut: clamp(20px, 4.5vw, 60px);
  --r-lg: 32px;
  --r-md: 22px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bone);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

/* microscopic grain */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: .35;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/><feColorMatrix type='saturate' values='0'/></filter><rect width='160' height='160' filter='url(%23n)' opacity='.28'/></svg>");
  mix-blend-mode: multiply;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.container { max-width: var(--max); margin-inline: auto; padding-inline: var(--gut); position: relative; z-index: 2; }

.serif { font-family: var(--serif); font-weight: 400; letter-spacing: -.01em; }

.eyebrow {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 22px;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--sage); }

/* ------------------------------------------------------------------ header */
.topline {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}
.topline__in { display: flex; justify-content: space-between; gap: 18px; padding-block: 10px; }

.head { position: sticky; top: 0; z-index: 30; background: rgba(244,239,230,.86); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.head__in { display: flex; align-items: center; justify-content: space-between; gap: 26px; padding-block: 16px; }

.brand { display: flex; align-items: center; gap: 11px; }
.brand svg { width: 30px; height: 30px; color: var(--moss); }
.brand b { font-family: var(--serif); font-size: 25px; font-weight: 400; letter-spacing: -.01em; }
.brand small { display: block; font-family: var(--mono); font-size: 8.5px; letter-spacing: .22em; color: var(--muted); text-transform: uppercase; }

.nav { display: flex; gap: 26px; font-size: 14.5px; color: var(--ink-2); }
.nav a { padding-block: 4px; border-bottom: 1px solid transparent; transition: border-color .2s, color .2s; }
.nav a:hover { border-color: var(--clay); color: var(--ink); }

.btn {
  display: inline-flex; align-items: center; gap: 9px;
  border-radius: 999px;
  padding: 12px 22px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--moss);
  transition: background .22s, color .22s, transform .22s;
}
.btn--fill { background: var(--moss); color: #f6f2ea; }
.btn--fill:hover { background: var(--moss-2); transform: translateY(-1px); }
.btn--ghost { background: transparent; color: var(--moss); }
.btn--ghost:hover { background: rgba(47,68,56,.08); }

/* -------------------------------------------------------------------- hero */
.hero { position: relative; padding-block: clamp(48px, 8vw, 104px) clamp(30px, 5vw, 60px); }

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: .55;
  z-index: 0;
  pointer-events: none;
}
.blob--a { width: 46vw; height: 46vw; right: -8vw; top: -6vw; background: radial-gradient(circle at 40% 40%, #cfd8c6, rgba(207,216,198,0)); }
.blob--b { width: 34vw; height: 34vw; left: -10vw; bottom: -12vw; background: radial-gradient(circle at 60% 40%, #e8cdb9, rgba(232,205,185,0)); }

.hero h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(54px, 8.6vw, 118px);
  line-height: .96;
  letter-spacing: -.02em;
  margin: 0 0 26px;
  max-width: 17ch;
}
.hero h1 em { font-style: italic; color: var(--moss); }

.hero__lede { font-size: clamp(17px, 1.3vw, 19.5px); color: var(--ink-2); max-width: 52ch; margin: 0 0 32px; }

.hero__row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }

.hero__note { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }

/* stat pills */
.stats { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 44px; }
.stat {
  border: 1px solid var(--line);
  background: rgba(255,253,249,.7);
  border-radius: 999px;
  padding: 9px 18px;
  font-size: 13.5px;
  color: var(--ink-2);
  display: flex; align-items: center; gap: 9px;
}
.stat b { font-family: var(--serif); font-size: 19px; font-weight: 400; color: var(--moss); }

/* ---------------------------------------------------------------- section */
.section { padding-block: clamp(56px, 7.5vw, 104px); }

.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 40px; }
.sec-head h2 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(32px, 4vw, 54px);
  line-height: 1.02; letter-spacing: -.015em; margin: 0; max-width: 20ch;
}
.sec-head p { margin: 0; color: var(--muted); max-width: 34ch; font-size: 15px; }

/* product cards */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .3s cubic-bezier(.2,.7,.2,1), box-shadow .3s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 24px 48px -28px rgba(27,36,31,.4); }

.card__media { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--bone-2); }
.card__media img { width: 100%; height: 100%; object-fit: cover; }
.card__tag {
  position: absolute; left: 14px; top: 14px;
  background: rgba(255,253,249,.92);
  border-radius: 999px;
  padding: 5px 12px;
  font-family: var(--mono); font-size: 9.5px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--moss);
}

.card__body { padding: 20px 22px 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.card__kicker { font-family: var(--mono); font-size: 9.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); display: flex; justify-content: space-between; gap: 10px; }
.card h3 { font-family: var(--serif); font-weight: 400; font-size: 26px; line-height: 1.1; margin: 0; letter-spacing: -.01em; }
.card p { margin: 0; font-size: 14.5px; color: var(--muted); line-height: 1.55; flex: 1; }
.card__foot { display: flex; justify-content: space-between; align-items: center; padding-top: 12px; border-top: 1px solid var(--line); font-family: var(--mono); font-size: 11px; color: var(--ink-2); }
.card__foot span { color: var(--muted); }

/* --------------------------------------------------------------- evidence */
.evidence {
  background: var(--moss);
  color: #f2eee4;
  border-radius: 40px;
  margin-inline: auto;
  max-width: calc(var(--max) - 2 * var(--gut) + 2 * var(--gut));
  position: relative;
  overflow: hidden;
}
.evidence__blob {
  position: absolute; width: 420px; height: 420px; right: -120px; top: -160px;
  background: radial-gradient(circle, rgba(169,182,164,.35), transparent 70%);
  filter: blur(30px);
}
.evidence__in { position: relative; padding: clamp(38px, 5vw, 72px) clamp(26px, 4vw, 64px); }
.evidence h2 { font-family: var(--serif); font-weight: 400; font-size: clamp(30px, 3.6vw, 48px); margin: 0 0 14px; line-height: 1.04; }
.evidence p { color: rgba(242,238,228,.78); max-width: 54ch; margin: 0 0 34px; }

.ev-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.ev-cell { border-top: 1px solid rgba(242,238,228,.28); padding-top: 16px; }
.ev-cell h3 { font-family: var(--mono); font-size: 10.5px; letter-spacing: .16em; text-transform: uppercase; color: rgba(242,238,228,.62); margin: 0 0 8px; font-weight: 400; }
.ev-cell p { margin: 0; font-size: 14.5px; line-height: 1.55; color: rgba(242,238,228,.9); }

/* -------------------------------------------------------------------- cta */
.cta { padding-block: clamp(60px, 8vw, 110px); text-align: center; position: relative; }
.cta h2 { font-family: var(--serif); font-weight: 400; font-size: clamp(34px, 5vw, 64px); line-height: 1.02; margin: 0 auto 18px; max-width: 20ch; letter-spacing: -.015em; }
.cta p { color: var(--muted); margin: 0 auto 30px; max-width: 48ch; }

/* ----------------------------------------------------------------- footer */
.foot { border-top: 1px solid var(--line); padding-block: 34px 44px; font-size: 13.5px; color: var(--muted); position: relative; z-index: 2; }
.foot__row { display: flex; justify-content: space-between; gap: 22px; flex-wrap: wrap; }
.foot a:hover { color: var(--moss); }

@media (max-width: 960px) {
  .nav { display: none; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .ev-grid { grid-template-columns: 1fr; }
  .sec-head { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: clamp(44px, 12vw, 64px); }
  .stats { gap: 8px; }
  .stat { font-size: 12.5px; padding: 8px 14px; }
}