:root {
  --bg: #e9eeeb;
  --bg-alt: #d9e1dd;
  --bg-dark: #1e2a26;
  --text: #171f1c;
  --muted: #63706b;
  --on-dark: #e9eeeb;
  --on-dark-muted: #a8b8b1;
  --accent: #8f4a28;
  --accent-2: #3d6f66;
  --gap: 24px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; }

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

a:hover { text-decoration-thickness: 2px; }

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

/* ---------- grid ---------- */

.grid {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--gap);
}

.col-text { grid-column: 4 / span 6; }
.col-list { grid-column: 4 / span 7; }
.col-wide { grid-column: 3 / span 8; }

/* ---------- rhythm ---------- */

.band { padding: 64px 0; }
.band-alt { background: var(--bg-alt); padding: 104px 0; }
.band-dark { background: var(--bg-dark); color: var(--on-dark); padding: 112px 0; }
.band-figure { padding: 96px 0; }

.band-dark a { color: #d8a47f; }
.band-dark a:focus-visible { outline-color: #d8a47f; }

/* ---------- typography ---------- */

h1, h2, h3 { font-weight: 700; }

h1 {
  margin: 0;
  font-size: clamp(2.3rem, 5.4vw, 3.9rem);
  line-height: 1.06;
  letter-spacing: -0.035em;
}

h2 {
  margin: 0 0 18px;
  font-size: clamp(1.35rem, 2.4vw, 1.7rem);
  line-height: 1.25;
  letter-spacing: -0.015em;
}

h3 {
  margin: 38px 0 10px;
  font-size: 1.06rem;
  line-height: 1.35;
}

p { margin: 0 0 20px; max-width: 66ch; }

.lead {
  font-size: 21px;
  line-height: 1.6;
}

.num {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--accent-2);
}

.cap {
  margin: 20px 0 0;
  font-size: 13px;
  line-height: 1.55;
  color: var(--muted);
  text-align: center;
  max-width: none;
}

/* ---------- header / navigation ---------- */

.site-head { padding-top: 34px; }

.nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 38px;
}

.nav a {
  font-size: 13px;
  letter-spacing: 0.13em;
  color: var(--muted);
  text-decoration: none;
}

.nav a:hover { color: var(--accent); }

.nav a[aria-current="page"] {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 6px;
}

.nav-row { grid-column: 1 / -1; }

/* ---------- hero ---------- */

.hero {
  min-height: 78vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-bottom: 10vh;
}

.hero .grid { width: 100%; }

.hero-block {
  grid-column: 3 / span 8;
  text-align: center;
}

.hero-sub {
  margin: 26px auto 0;
  max-width: 60ch;
  color: var(--muted);
  font-size: 17px;
}

.hero-short { min-height: 46vh; padding-bottom: 6vh; }

/* ---------- figures ---------- */

figure { margin: 0; }

figure img {
  display: block;
  width: 100%;
  height: auto;
}

.fig-main { grid-column: 3 / span 8; }

.detail-fig { grid-column: 2 / span 4; }

.detail-text { grid-column: 7 / span 5; }

.detail-fig .cap {
  text-align: left;
  color: var(--on-dark-muted);
}

/* ---------- lists ---------- */

ul.marks, ol.steps {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  max-width: 62ch;
}

ul.marks li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 12px;
}

ul.marks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 2px;
  background: var(--accent);
}

ol.steps { counter-reset: step; }

ol.steps li {
  position: relative;
  padding-left: 34px;
  margin-bottom: 14px;
  counter-increment: step;
}

ol.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--accent-2);
}

.band-dark ul.marks li::before { background: #d8a47f; }

/* ---------- editorial column (about, legal) ---------- */

.doc { grid-column: 4 / span 6; }

.doc h2 { margin-top: 0; }

.doc-block + .doc-block { margin-top: 64px; }

.sep {
  margin: 64px 0;
  text-align: center;
  color: var(--accent-2);
  font-size: 15px;
  letter-spacing: 0.4em;
}

.doc-meta {
  margin-top: 56px;
  font-size: 13px;
  color: var(--muted);
}

/* ---------- footer ---------- */

.site-foot {
  background: var(--bg-alt);
  padding: 116px 0 104px;
  margin-top: 64px;
}

.foot-col {
  grid-column: 3 / span 8;
  text-align: center;
}

.foot-name {
  margin: 0 0 26px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.site-foot .nav ul { gap: 12px 34px; }

.foot-mail { margin: 28px 0 0; }

.foot-note {
  margin: 26px auto 0;
  max-width: 56ch;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- responsive ---------- */

@media (max-width: 980px) {
  .col-text, .col-list, .col-wide, .doc,
  .fig-main, .hero-block, .foot-col { grid-column: 2 / span 10; }
  .detail-fig { grid-column: 2 / span 6; }
  .detail-text { grid-column: 2 / span 10; margin-top: 44px; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .grid { padding: 0 20px; }
  .col-text, .col-list, .col-wide, .doc, .fig-main,
  .hero-block, .foot-col, .detail-fig, .detail-text { grid-column: 1 / -1; }
  .band { padding: 36px 0; }
  .band-alt { padding: 60px 0; }
  .band-dark { padding: 64px 0; }
  .band-figure { padding: 56px 0; }
  .hero { min-height: 68vh; padding-bottom: 8vh; }
  .hero-short { min-height: auto; padding: 40px 0 8px; }
  .nav ul { gap: 10px 22px; }
  .doc-block + .doc-block { margin-top: 44px; }
  .sep { margin: 44px 0; }
  .site-foot { padding: 72px 0 64px; margin-top: 36px; }
  .lead { font-size: 19px; }
}