/*
 * abyss: atlantistruffles.com
 * 1. Concept: a field guide with the bearing of a nautical chart. Bone paper, deep navy ink, sea-glass for links,
 *    brass only for small markers.
 * 2. Type: Fraunces (display serif, optical sizes) for titles; Public Sans for reading text and labels.
 * 3. Palette: paper #efe9dd, ink #10212f, sea #1d5c60, brass #8a5a17, band navy #10212f.
 * 4. Layout signature: a margin column with numbered "soundings" (the page sections, matching numbered h2's);
 *    on the home page a navy chart index of all chapters.
 * 5. Detail: double chart rule (navy + brass hairline) under the masthead; products shown as specimen tiles.
 */

@font-face{font-family:'Fraunces';font-style:normal;font-weight:400 700;font-display:swap;src:url(fonts/fraunces-normal-400-700-latin-ext.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Fraunces';font-style:normal;font-weight:400 700;font-display:swap;src:url(fonts/fraunces-normal-400-700-latin.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Public Sans';font-style:normal;font-weight:400 600;font-display:swap;src:url(fonts/public-sans-normal-400-latin-ext.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Public Sans';font-style:normal;font-weight:400 600;font-display:swap;src:url(fonts/public-sans-normal-400-latin.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Public Sans';font-style:italic;font-weight:400;font-display:swap;src:url(fonts/public-sans-italic-400-latin-ext.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Public Sans';font-style:italic;font-weight:400;font-display:swap;src:url(fonts/public-sans-italic-400-latin.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

:root {
  --paper: #efe9dd;
  --paper-2: #e5ddcd;
  --tile: #fbf8f2;
  --ink: #10212f;
  --ink-2: #3c4c59;
  --rule: rgba(16, 33, 47, .16);
  --rule-strong: rgba(16, 33, 47, .55);
  --sea: #1d5c60;
  --brass: #8a5a17;
  --brass-light: #d3a75b;
  --band: #10212f;
  --band-ink: #ece5d6;
  --band-muted: #a7b2ba;
  --serif: 'Fraunces', Georgia, 'Times New Roman', serif;
  --sans: 'Public Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --wrap: 72rem;
  --measure: 40rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.7 var(--sans);
  font-feature-settings: "kern", "liga";
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--sea); text-decoration-thickness: 1px; text-underline-offset: .18em; }
a:hover { color: var(--ink); }
:focus-visible { outline: 2px solid var(--brass); outline-offset: 3px; border-radius: 2px; }
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 1.25rem; }

.skip { position: absolute; left: -999px; top: .5rem; background: var(--ink); color: var(--paper); padding: .5rem .75rem; z-index: 10; }
.skip:focus { left: .5rem; }

/* ---------- masthead ---------- */
.masthead {
  border-bottom: 1px solid var(--ink);
  box-shadow: 0 3px 0 -2px var(--brass-light);
  margin-bottom: 3px;
}
.masthead-row { display: flex; align-items: center; gap: 1.5rem; min-height: 4.75rem; }
.brand { display: flex; align-items: center; gap: .8rem; color: var(--ink); text-decoration: none; margin-right: auto; }
.brand-mark { width: 44px; height: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font: 600 1.3rem/1.1 var(--serif); letter-spacing: -.005em; }
.brand-sub { display: none; white-space: nowrap; font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2); margin-top: .2rem; }

.primary { display: none; gap: 1.4rem; }
.primary a, .langs a { color: var(--ink); text-decoration: none; font-size: .9rem; }
.primary a[aria-current="page"] { text-decoration: underline; text-decoration-color: var(--brass-light); text-decoration-thickness: 2px; text-underline-offset: .5em; }
.primary a:hover { color: var(--sea); }
.langs { display: flex; gap: .15rem; border-left: 1px solid var(--rule); padding-left: 1rem; }
.langs a { font-size: .78rem; letter-spacing: .08em; padding: .2rem .35rem; color: var(--ink-2); }
.langs a[aria-current="true"] { color: var(--ink); font-weight: 600; }

.menu { position: relative; }
.menu summary { list-style: none; cursor: pointer; font-size: .9rem; padding: .4rem .7rem; border: 1px solid var(--rule-strong); border-radius: 2px; }
.menu summary::-webkit-details-marker { display: none; }
.menu[open] summary { background: var(--ink); color: var(--paper); }
.menu nav { position: absolute; right: 0; top: calc(100% + .5rem); z-index: 5; background: var(--paper); border: 1px solid var(--ink); min-width: 14rem; padding: .5rem 0; box-shadow: 4px 4px 0 var(--paper-2); }
.menu nav a { display: block; padding: .55rem 1rem; color: var(--ink); text-decoration: none; }
.menu nav a[aria-current="page"] { font-weight: 600; }

/* ---------- home ---------- */
.hero { display: grid; gap: 1.5rem; align-items: center; padding-top: 3rem; padding-bottom: 2.5rem; }
.hero h1 {
  font: 500 clamp(2.4rem, 7vw, 4.6rem)/1.02 var(--serif);
  letter-spacing: -.02em;
  margin: 0;
  max-width: 14ch;
  font-variation-settings: "SOFT" 30;
}
.hero-mark { width: clamp(88px, 22vw, 240px); opacity: .92; justify-self: start; }

.chart { background: var(--band); color: var(--band-ink); padding: 2.75rem 0 3rem; }
.chart-title { font: 500 .78rem/1 var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--brass-light); margin: 0 0 1.5rem; }
.chart-index { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; border-top: 1px solid rgba(236, 229, 214, .2); }
.chart-index li { border-bottom: 1px solid rgba(236, 229, 214, .2); }
.chart-index a { display: grid; grid-template-columns: 2.6rem 1fr; column-gap: .75rem; padding: 1.05rem 0; color: var(--band-ink); text-decoration: none; }
.chart-no { grid-row: span 2; font: 500 1rem/1.5 var(--serif); color: var(--brass-light); font-variant-numeric: tabular-nums; }
.chart-name { font: 500 1.25rem/1.3 var(--serif); }
.chart-desc { font-size: .9rem; line-height: 1.5; color: var(--band-muted); margin-top: .25rem; }
.chart-index a:hover .chart-name { text-decoration: underline; text-decoration-color: var(--brass-light); text-underline-offset: .2em; }

.home-body .margin .stamp { margin: 0; }
.home-body .prose > p:first-child { font: 400 1.3rem/1.55 var(--serif); }

/* ---------- article pages ---------- */
.sheet { display: grid; gap: 0 3rem; padding-top: 2.5rem; padding-bottom: 4.5rem; }
.margin { font-size: .9rem; }
.kicker { font-size: .74rem; letter-spacing: .2em; text-transform: uppercase; color: var(--brass); margin: 0 0 .75rem; }
.soundings { border: 1px solid var(--rule); background: var(--tile); padding: .75rem 1rem; margin-bottom: 1.5rem; }
.soundings summary { cursor: pointer; font-size: .74rem; letter-spacing: .16em; text-transform: uppercase; color: var(--ink-2); }
.soundings ol { list-style: none; margin: .75rem 0 0; padding: 0; counter-reset: s; }
.soundings li { counter-increment: s; position: relative; padding: .3rem 0 .3rem 2.1rem; line-height: 1.35; }
.soundings li::before { content: counter(s, decimal-leading-zero); position: absolute; left: 0; top: .3rem; font: 500 .82rem/1.6 var(--serif); color: var(--brass); font-variant-numeric: tabular-nums; }
.soundings a { color: var(--ink); text-decoration: none; }
.soundings a:hover { color: var(--sea); text-decoration: underline; }

.title-block { border-bottom: 1px solid var(--rule); padding-bottom: 1.25rem; margin-bottom: 1.75rem; max-width: var(--measure); }
.title-block h1 { font: 500 clamp(2rem, 5vw, 3.2rem)/1.08 var(--serif); letter-spacing: -.015em; margin: 0; }
.stamp { margin: .9rem 0 0; font-size: .8rem; letter-spacing: .06em; color: var(--ink-2); }

/* ---------- prose ---------- */
.prose { max-width: var(--measure); counter-reset: h2; }
.prose :where(p, ul, ol) { margin: 0; }
.prose > * + * { margin-top: 1.05em; }
.prose > p:first-child { font-size: 1.15rem; line-height: 1.65; color: var(--ink); }
.prose h2 {
  counter-increment: h2;
  font: 500 1.65rem/1.2 var(--serif);
  letter-spacing: -.01em;
  margin: 2.6rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--rule);
  position: relative;
}
.is-page .prose h2::before {
  content: counter(h2, decimal-leading-zero);
  display: block;
  font: 500 .8rem/1 var(--serif);
  color: var(--brass);
  letter-spacing: .08em;
  margin-bottom: .55rem;
  font-variant-numeric: tabular-nums;
}
.prose h3 { font: 600 1.05rem/1.4 var(--sans); margin: 1.8rem 0 0; }
.prose ul, .prose ol { padding-left: 1.2rem; }
.prose li + li { margin-top: .4rem; }
.prose li::marker { color: var(--brass); }
.prose strong { font-weight: 600; }
.prose em { font-style: italic; }
.prose blockquote { margin: 1.5rem 0 0; padding: .2rem 0 .2rem 1.1rem; border-left: 2px solid var(--brass-light); color: var(--ink-2); }
.prose hr { border: 0; border-top: 1px solid var(--rule); margin: 2.5rem 0; }
.prose code { font-size: .92em; background: var(--paper-2); padding: .05em .3em; border-radius: 2px; }
.prose figure { margin: 2rem 0 0; }

.prose .table { overflow-x: auto; margin-top: 1.4rem; margin-bottom: .6rem; -webkit-overflow-scrolling: touch; }
.prose table { width: 100%; border-collapse: collapse; font-size: .93rem; line-height: 1.5; font-variant-numeric: tabular-nums; }
.prose th { text-align: left; font-weight: 600; font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-2); border-bottom: 1px solid var(--ink); padding: .45rem .9rem .45rem 0; vertical-align: bottom; }
.prose td { border-bottom: 1px solid var(--rule); padding: .65rem .9rem .65rem 0; vertical-align: top; }
.prose td:first-child { font-weight: 600; white-space: nowrap; }

/* composite reports: the italic label line under each heading */
.is-report h2 + p em:only-child { display: inline-block; font-style: normal; font-size: .76rem; letter-spacing: .1em; text-transform: uppercase; color: var(--brass); }

/* mascots on the about page */
.prose p:has(> img) { display: flex; gap: 1rem; align-items: end; }
.prose p > img { width: 110px; }

/* ---------- products ---------- */
.products { display: grid; grid-template-columns: repeat(auto-fill, minmax(9.25rem, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.product-feature { margin-top: 1.5rem; max-width: 22rem; }
.specimen { display: flex; flex-direction: column; text-decoration: none; color: var(--ink); background: var(--tile); border: 1px solid var(--rule); transition: border-color .15s; }
.specimen:hover { border-color: var(--ink); color: var(--ink); }
.specimen-plate { display: block; aspect-ratio: 1; background: #fff; border-bottom: 1px solid var(--rule); padding: .75rem; }
.specimen-plate img { width: 100%; height: 100%; object-fit: contain; }
.specimen-label { display: flex; flex-direction: column; gap: .35rem; padding: .7rem .8rem .8rem; flex: 1; }
.specimen-name { font-size: .88rem; line-height: 1.35; font-weight: 600; }
.specimen-meta { display: flex; flex-direction: column-reverse; gap: .3rem; margin-top: auto; }
.specimen-price { font: 500 1.05rem/1 var(--serif); font-variant-numeric: tabular-nums; }
.specimen-shop { font-size: .64rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-2); }

/* ---------- footer ---------- */
.footer { background: var(--band); color: var(--band-ink); padding: 2.75rem 0 3rem; font-size: .88rem; line-height: 1.6; }
.footer a { color: var(--band-ink); }
.footer a:hover { color: var(--brass-light); }
.footer-grid { display: grid; gap: 2rem; }
.footer-name { font: 500 1.2rem/1.2 var(--serif); margin: 0 0 .6rem; }
.footer-note { margin: 0; color: var(--band-muted); max-width: 30rem; }
.footer-label { margin: 0 0 .6rem; font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--brass-light); }
.footer-publisher p { margin: 0; }
.mascots { display: flex; gap: .5rem; margin-bottom: .6rem !important; }
.mascots img { width: 56px; height: auto; }
.footer-langs { display: flex; flex-direction: column; gap: .3rem; }
.footer-langs a { text-decoration: none; color: var(--band-muted); }
.footer-langs a[aria-current="true"] { color: var(--band-ink); }

/* ---------- wider screens ---------- */
@media (min-width: 34rem) { .brand-sub { display: block; } }
@media (min-width: 52rem) {
  .menu { display: none; }
  .primary { display: flex; }
  .hero { grid-template-columns: 1fr auto; padding-top: 4.5rem; padding-bottom: 3.5rem; }
  .chart-index { grid-template-columns: repeat(2, 1fr); column-gap: 3rem; border-top: 0; }
  .chart-index li:nth-child(-n+2) { border-top: 1px solid rgba(236, 229, 214, .2); }
  .sheet { grid-template-columns: 13rem minmax(0, 1fr); padding-top: 3.5rem; }
  .margin { position: sticky; top: 1.5rem; align-self: start; max-height: calc(100vh - 3rem); overflow: auto; }
  .soundings { border: 0; border-left: 1px solid var(--ink); background: none; padding: 0 0 0 1rem; }
  .soundings summary { pointer-events: none; list-style: none; }
  .soundings summary::-webkit-details-marker { display: none; }
  .footer-grid { grid-template-columns: 1.4fr 1.4fr .8fr; }
}
@media (min-width: 72rem) {
  .chart-index { grid-template-columns: repeat(3, 1fr); }
  .chart-index li:nth-child(-n+3) { border-top: 1px solid rgba(236, 229, 214, .2); }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }
@media print { .masthead nav, .menu, .margin, .footer, .products { display: none; } body { background: #fff; } }