/* Kemvarpono — stepped-poster */

:root {
  --bg: #e8e6e1;
  --bg-alt: #d3d0c9;
  --bg-dark: #2a2a28;
  --ink: #17171a;
  --ink-2: #6a6862;
  --ink-inv: #e8e6e1;
  --rust: #8c4a2f;
  --steel: #55707a;
  --font: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.7;
  overflow-x: hidden;
}

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

a { color: var(--rust); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }

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

.band--dark a { color: #d99a7c; }
.band--dark a:focus-visible { outline-color: #d99a7c; }

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

.wrap {
  width: min(1280px, 100% - 64px);
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: 28px;
}

.c-1-5  { grid-column: 1 / 6; }
.c-1-6  { grid-column: 1 / 7; }
.c-1-7  { grid-column: 1 / 8; }
.c-1-8  { grid-column: 1 / 9; }
.c-1-9  { grid-column: 1 / 10; }
.c-1-10 { grid-column: 1 / 11; }
.c-2-9  { grid-column: 2 / 10; }
.c-3-10 { grid-column: 3 / 11; }
.c-4-11 { grid-column: 4 / 12; }
.c-4-13 { grid-column: 4 / 13; }
.c-5-12 { grid-column: 5 / 13; }
.c-5-13 { grid-column: 5 / 13; }
.c-6-13 { grid-column: 6 / 13; }
.c-7-13 { grid-column: 7 / 13; }
.c-8-13 { grid-column: 8 / 13; }
.c-9-13 { grid-column: 9 / 13; }
.full   { grid-column: 1 / -1; }

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

.band { padding: 120px 0; }
.band--tight { padding: 56px 0; }
.band--alt { background: var(--bg-alt); }
.band--dark { background: var(--bg-dark); color: var(--ink-inv); }
.band--dark .sec-num { color: #93a9b0; }
.band--dark .caption { color: #a5a29a; }

.rule { height: 3px; background: var(--rust); margin: 0 0 40px; }
.rule--start { grid-column: 1 / 5; }
.rule--mid   { grid-column: 5 / 9; }
.rule--end   { grid-column: 9 / 13; }

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

h1, h2, h3 { margin: 0 0 18px; text-wrap: balance; }

h1 {
  font-size: clamp(40px, 7.4vw, 92px);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 0.98;
}

h2 {
  font-size: clamp(25px, 3.1vw, 37px);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.15;
}

h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
}

p { margin: 0 0 22px; max-width: 68ch; }
p:last-child { margin-bottom: 0; }

.lead { font-size: 20px; line-height: 1.6; }

.sec-num {
  display: block;
  color: var(--steel);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.caption {
  color: var(--ink-2);
  font-size: 13px;
  line-height: 1.5;
  letter-spacing: 0.02em;
}

.note { color: var(--ink-2); font-size: 15px; }

/* --- header / nav ----------------------------------------------------- */

.site-header { padding: 26px 0 22px; border-bottom: 1px solid rgba(23,23,26,.14); }

.site-header .wrap { align-items: baseline; row-gap: 14px; }

.brand {
  grid-column: 1 / 4;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}
.brand:hover { color: var(--rust); }

.site-nav { grid-column: 4 / 13; }
.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  justify-content: flex-end;
}
.site-nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover { border-bottom-color: var(--rust); }
.site-nav a[aria-current="page"] { border-bottom-color: var(--rust); color: var(--rust); }

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

.hero { padding: 96px 0 72px; }

.hero-head {
  grid-column: 1 / 13;
  position: relative;
  padding-left: 30px;
  margin-bottom: 46px;
}
.hero-head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 0;
  width: 3px;
  background: var(--rust);
}
.hero-head .sec-num { margin-bottom: 22px; }

.hero-title span { display: block; }
.hero-title span:nth-child(2) { margin-left: 8.5%; }
.hero-title span:nth-child(3) { margin-left: 17%; }

.hero-intro { grid-column: 1 / 6; }

.topic-line {
  grid-column: 7 / 13;
  align-self: end;
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  font-size: 15px;
  color: var(--ink-2);
}
.topic-line li::after {
  content: "/";
  color: var(--rust);
  margin: 0 12px;
  font-weight: 700;
}
.topic-line li:last-child::after { content: ""; margin: 0; }

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

.figure-main {
  grid-column: 5 / 13;
  margin: 0;
  display: flex;
  align-items: stretch;
  gap: 16px;
}
.figure-main img { width: 100%; }
.figure-main figcaption {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  color: var(--ink-2);
  font-size: 13px;
  letter-spacing: 0.04em;
  flex: 0 0 auto;
}

.figure-detail {
  grid-column: 2 / 6;
  margin: 0;
}
.figure-detail img { width: 100%; }
.figure-detail figcaption { margin-top: 14px; }

.detail-text { grid-column: 7 / 13; }

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

ol.steps {
  list-style: none;
  counter-reset: st;
  margin: 0 0 22px;
  padding: 0;
  max-width: 66ch;
}
ol.steps li {
  counter-increment: st;
  position: relative;
  padding-left: 68px;
  margin-bottom: 24px;
}
ol.steps li::before {
  content: counter(st, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: -4px;
  font-size: 27px;
  font-weight: 800;
  color: var(--rust);
  letter-spacing: -0.03em;
}
ol.steps strong { display: block; }

ul.marks {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  max-width: 66ch;
}
ul.marks li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 12px;
}
ul.marks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 12px;
  height: 3px;
  background: var(--rust);
}

.stack > * + * { margin-top: 34px; }

/* --- about ------------------------------------------------------------ */

.about-lead { grid-column: 1 / 10; font-size: 22px; line-height: 1.55; }
.about-block { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(12, 1fr); column-gap: 28px; }
.about-block h2, .about-block h3 { grid-column: 1 / 4; }
.about-block .about-body { grid-column: 4 / 10; }

.legal-body { grid-column: 1 / 8; }
.legal-side { grid-column: 9 / 13; }

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

.site-footer {
  border-top: 3px solid var(--rust);
  margin-top: 0;
  padding: 54px 0 64px;
  background: var(--bg);
}
.footer-name {
  grid-column: 1 / -1;
  font-size: clamp(34px, 6vw, 68px);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1;
  margin: 0 0 36px;
}
.footer-nav { grid-column: 1 / 6; }
.footer-nav ul { list-style: none; margin: 0; padding: 0; }
.footer-nav li { margin-bottom: 8px; }
.footer-nav a { color: var(--ink); text-decoration: none; font-weight: 600; }
.footer-nav a:hover { color: var(--rust); text-decoration: underline; }
.footer-meta { grid-column: 7 / 13; }
.footer-meta p { margin-bottom: 14px; }
.footer-mail { font-size: 19px; font-weight: 700; }

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

@media (max-width: 900px) {
  .wrap { width: min(1280px, 100% - 40px); column-gap: 20px; }

  .band { padding: 64px 0; }
  .band--tight { padding: 40px 0; }
  .hero { padding: 56px 0 48px; }

  .brand { grid-column: 1 / -1; }
  .site-nav { grid-column: 1 / -1; }
  .site-nav ul { justify-content: flex-start; gap: 8px 20px; }

  .hero-head { grid-column: 1 / -1; padding-left: 18px; }
  .hero-title span:nth-child(2) { margin-left: 6%; }
  .hero-title span:nth-child(3) { margin-left: 12%; }

  .hero-intro,
  .topic-line,
  .c-1-5, .c-1-6, .c-1-7, .c-1-8, .c-1-9, .c-1-10,
  .c-2-9, .c-3-10, .c-4-11, .c-4-13,
  .c-5-12, .c-5-13, .c-6-13, .c-7-13, .c-8-13, .c-9-13,
  .figure-main, .figure-detail, .detail-text,
  .about-lead, .legal-body, .legal-side,
  .footer-nav, .footer-meta { grid-column: 1 / -1; }

  .topic-line { margin-top: 26px; }

  .rule--start, .rule--mid, .rule--end { grid-column: 1 / 7; margin-bottom: 28px; }

  .figure-main { flex-direction: column; gap: 12px; }
  .figure-main figcaption { writing-mode: horizontal-tb; transform: none; }

  .figure-detail { margin-bottom: 34px; }

  .about-block { grid-template-columns: 1fr; }
  .about-block h2, .about-block h3, .about-block .about-body { grid-column: 1 / -1; }

  .legal-side { margin-top: 34px; }

  ol.steps li { padding-left: 52px; }
  ol.steps li::before { font-size: 22px; }

  .about-lead { font-size: 19px; }
  .lead { font-size: 18px; }
}

@media (max-width: 480px) {
  body { font-size: 16px; }
  .hero-title span:nth-child(2) { margin-left: 4%; }
  .hero-title span:nth-child(3) { margin-left: 8%; }
}