/* Naro-Am — tessera-modules */
:root {
  --bg: #eeece6;
  --bg-alt: #dedbd2;
  --night: #1b2430;
  --ink: #1a1a18;
  --muted: #6d6a62;
  --on-night: #eeece6;
  --blue: #2a4f78;
  --ochre: #9a6a1c;
  --seam: 4px;
  --u: 24px;
  --font: system-ui, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

*, *::before, *::after { 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 { display: block; max-width: 100%; height: auto; }

a { color: var(--blue); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }

h1, h2, h3 { margin: 0; line-height: 1.15; font-weight: 700; }
h2 { font-size: clamp(1.6rem, 1.2rem + 1.5vw, 2.25rem); letter-spacing: -0.015em; margin-bottom: var(--u); }
h3 { font-size: 1.2rem; letter-spacing: -0.005em; margin: var(--u) 0 8px; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

.skip { position: absolute; left: -9999px; top: 0; background: var(--blue); color: #fff; padding: 8px 16px; z-index: 10; }
.skip:focus { left: 16px; top: 16px; }

.wrap { width: 100%; max-width: 1272px; margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */
.site-header { padding: var(--u) 0; }
.site-header .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 32px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 1.15rem; letter-spacing: -0.02em; }
.brand-mark { display: grid; grid-template-columns: 10px 10px; gap: 2px; }
.brand-mark i { width: 10px; height: 10px; display: block; }
.brand-mark i:nth-child(1) { background: var(--blue); }
.brand-mark i:nth-child(2) { background: var(--ochre); }
.brand-mark i:nth-child(3) { background: var(--night); }
.brand-mark i:nth-child(4) { background: var(--bg-alt); }

.nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px 20px; }
.nav a { color: var(--ink); text-decoration: none; font-size: 15px; padding: 4px 0; border-bottom: 2px solid transparent; }
.nav a:hover, .nav a[aria-current="page"] { border-bottom-color: var(--blue); }

/* ---------- separators ---------- */
.tiles {
  border: 0; margin: 0; height: 24px; width: 100%;
  background:
    repeating-linear-gradient(90deg,
      var(--blue) 0 24px, transparent 24px 28px,
      var(--ochre) 28px 52px, transparent 52px 56px,
      var(--bg-alt) 56px 80px, transparent 80px 84px,
      var(--blue) 84px 108px, transparent 108px 112px,
      var(--night) 112px 136px, transparent 136px 140px,
      var(--bg-alt) 140px 164px, transparent 164px 168px);
}

/* ---------- mosaic system ---------- */
.mosaic {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--seam);
  background: var(--bg);
}
.alt .mosaic { background: var(--bg-alt); }
.night .mosaic { background: var(--night); }

.m { background: var(--bg-alt); padding: 32px; min-width: 0; }
.alt .m { background: var(--bg); }
.m.plain { background: transparent; padding-left: 0; padding-right: 0; }
.m.fill-blue { background: var(--blue); }
.m.fill-ochre { background: var(--ochre); }
.m.fill-night { background: var(--night); }
.m.fill-ink { background: var(--ink); }
.m.fill-bg { background: var(--bg); }
.m.fill-alt { background: var(--bg-alt); }

.c2 { grid-column: span 2; } .c3 { grid-column: span 3; }
.c4 { grid-column: span 4; } .c5 { grid-column: span 5; }
.c6 { grid-column: span 6; } .c7 { grid-column: span 7; }
.c8 { grid-column: span 8; } .c12 { grid-column: span 12; }
.c1 { grid-column: span 1; }

/* ---------- sections ---------- */
.section { padding: 96px 0; }
.section.alt { background: var(--bg-alt); }
.section.night { background: var(--night); color: var(--on-night); }
.section.night a { color: #a9c4e4; }
.section.night a:focus-visible { outline-color: #a9c4e4; }

.num { display: block; font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ochre); font-weight: 600; margin-bottom: 12px; }
.night .num { color: #d6a24e; }
.caption, figcaption { font-size: 13px; line-height: 1.5; color: var(--muted); }
.night figcaption { color: #b9b6ad; }
.lead { font-size: 1.15rem; line-height: 1.6; }

/* lists */
.check, .dash { list-style: none; margin: 0 0 1em; padding: 0; }
.check li, .dash li { position: relative; padding-left: 28px; margin-bottom: 10px; }
.check li::before { content: ""; position: absolute; left: 0; top: 0.5em; width: 12px; height: 12px; background: var(--blue); }
.dash li::before { content: ""; position: absolute; left: 0; top: 0.8em; width: 14px; height: 2px; background: var(--ochre); }
.night .check li::before { background: #a9c4e4; }

ol.steps { margin: 0; padding: 0; list-style: none; counter-reset: s; }
ol.steps li { counter-increment: s; position: relative; padding-left: 44px; margin-bottom: 14px; }
ol.steps li::before { content: counter(s, decimal-leading-zero); position: absolute; left: 0; top: 0; font-size: 13px; font-weight: 700; color: var(--ochre); letter-spacing: 0.05em; padding-top: 3px; }

dl.terms { margin: 0; }
dl.terms dt { font-weight: 700; margin-top: 16px; }
dl.terms dt:first-child { margin-top: 0; }
dl.terms dd { margin: 4px 0 0; }

/* ---------- hero ---------- */
.hero { padding: 24px 0 96px; }
.hero .mosaic { grid-auto-rows: minmax(96px, auto); }
.hero-title { grid-column: span 8; grid-row: span 2; background: var(--night); color: var(--on-night); padding: 40px; display: flex; flex-direction: column; justify-content: flex-end; }
.hero-title .num { color: #d6a24e; }
.hero h1 {
  font-size: clamp(2.3rem, 1.2rem + 3.6vw, 4.4rem);
  letter-spacing: -0.035em;
  line-height: 1.02;
  font-weight: 800;
  text-wrap: balance;
  max-width: 16ch;
}
.hero-intro { grid-column: span 4; grid-row: span 2; display: flex; flex-direction: column; justify-content: space-between; gap: 24px; }
.hero-intro .caption { color: var(--muted); }

.hero-figure { grid-column: 3 / span 6; grid-row: span 3; margin: 0; background: var(--bg-alt); }
.hero-figure img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
.hero-cap { grid-column: span 2; grid-row: span 3; display: flex; align-items: flex-end; }
.hero-side { grid-column: 1 / span 2; grid-row: span 3; display: grid; grid-template-rows: 1fr 1fr 1fr; gap: var(--seam); background: var(--bg); padding: 0; }
.hero-side span:nth-child(1) { background: var(--bg-alt); }
.hero-side span:nth-child(2) { background: var(--ochre); }
.hero-side span:nth-child(3) { background: var(--blue); }
.hero-end { grid-column: span 2; grid-row: span 3; display: grid; grid-template-rows: 2fr 1fr; gap: var(--seam); background: var(--bg); padding: 0; }
.hero-end span:nth-child(1) { background: var(--night); }
.hero-end span:nth-child(2) { background: var(--bg-alt); }

/* index list */
.index { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 32px; }
.index li { border-top: 1px solid #c9c5ba; padding: 12px 0; display: flex; gap: 16px; }
.index li span { color: var(--ochre); font-size: 13px; font-weight: 700; padding-top: 4px; min-width: 22px; }
.index a { color: var(--ink); text-decoration: none; font-weight: 600; }
.index a:hover { color: var(--blue); text-decoration: underline; }

/* detail image block */
.detail-figure { grid-column: 8 / span 5; margin: 0; padding: 0; background: transparent; }
.detail-figure img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.detail-figure figcaption { padding-top: 10px; }
.detail-text { grid-column: 1 / span 6; grid-row: 1; background: transparent; padding: 0; }
.detail-gap { grid-column: 7 / span 1; grid-row: 1; background: transparent; }
.night .m { background: #222d3b; }
.night .m.plain, .night .detail-text, .night .detail-figure, .night .detail-gap { background: transparent; }

.note { border-left: 4px solid var(--ochre); padding-left: 16px; color: var(--muted); font-size: 15px; }
.night .note { color: #c9c6bd; }

/* ---------- inner pages ---------- */
.page-head { padding: 24px 0 72px; }
.page-head .mosaic { grid-auto-rows: minmax(72px, auto); }
.page-title { grid-column: span 8; grid-row: span 2; background: var(--night); color: var(--on-night); padding: 40px; display: flex; flex-direction: column; justify-content: flex-end; }
.page-title h1 { font-size: clamp(2rem, 1.2rem + 2.6vw, 3.4rem); letter-spacing: -0.03em; font-weight: 800; line-height: 1.05; }
.page-title .num { color: #d6a24e; }
.page-meta { grid-column: span 4; grid-row: span 2; display: flex; flex-direction: column; justify-content: flex-end; }

.prose h2 { font-size: 1.5rem; margin: 40px 0 12px; }
.prose h2:first-child { margin-top: 0; }

/* ---------- footer ---------- */
.site-footer { margin-top: 0; padding: 0 0 48px; }
.site-footer .tiles { margin-bottom: var(--seam); }
.foot { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.foot .m { background: var(--bg-alt); padding: 28px; font-size: 15px; line-height: 1.6; }
.foot h2 { font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ochre); margin-bottom: 12px; }
.foot .fname { font-size: 1.4rem; font-weight: 800; letter-spacing: -0.02em; display: block; margin-bottom: 8px; }
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li { margin-bottom: 4px; }
.foot a { color: var(--ink); }
.foot a:hover { color: var(--blue); }
.foot .muted { color: var(--muted); }

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
  .mosaic { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .c8, .c7, .c12 { grid-column: span 6; }
  .c4, .c5 { grid-column: span 3; }
  .c6 { grid-column: span 6; }
  .c3 { grid-column: span 3; }
  .hero-title { grid-column: span 6; }
  .hero-intro { grid-column: span 6; grid-row: auto; }
  .hero-side { display: none; }
  .hero-figure { grid-column: 1 / span 4; grid-row: auto; }
  .hero-cap { grid-column: span 2; grid-row: auto; }
  .hero-end { display: none; }
  .detail-text { grid-column: 1 / span 6; grid-row: auto; }
  .detail-gap { display: none; }
  .detail-figure { grid-column: 2 / span 4; }
  .page-title, .page-meta { grid-column: span 6; }
  .page-meta { grid-row: auto; }
  .foot { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .section { padding: 48px 0; }
  .hero { padding-bottom: 48px; }
  .page-head { padding-bottom: 48px; }
  .mosaic { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .c1, .c2 { grid-column: span 1; }
  .c3, .c4, .c5, .c6, .c7, .c8, .c12 { grid-column: span 4; }
  .m { padding: 24px; }
  .hero-title, .hero-intro, .page-title, .page-meta { grid-column: span 4; }
  .hero-title, .page-title { padding: 28px 24px; }
  .hero-figure, .hero-cap { grid-column: span 4; }
  .hero-cap { padding-top: 16px; padding-bottom: 16px; }
  .detail-figure { grid-column: span 4; }
  .detail-text { grid-column: span 4; }
  .index { grid-template-columns: 1fr; }
  .foot { grid-template-columns: 1fr; }
  .nav ul { gap: 4px 16px; }
  .hide-sm { display: none; }
}

@media (max-width: 640px) {
  .hero .mosaic, .page-head .mosaic { grid-auto-rows: minmax(40px, auto); }
}