/* =========================================================================
   GOUSSEV & CO. — single-ink lithography, c. 1901, applied to a 2026 blog.
   Edge-to-edge cream paper. No dark mode (period-correct).
   Tokens / type / structural elements / masthead / article / index / about / 404.
   ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=IM+Fell+DW+Pica:ital@0;1&family=IM+Fell+DW+Pica+SC&family=IM+Fell+English:ital@0;1&family=Playfair+Display:wght@700;900&family=Rye&family=Pinyon+Script&family=Petit+Formal+Script&family=Special+Elite&family=Cinzel:wght@500;700;900&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  /* ===== INK PALETTE — single-ink lithography ============================== */
  --ink:               #1a2233;
  --ink-soft:          #2c3852;
  --ink-faded:         #5a6478;
  --ink-ghost:         #8a8a8a;

  --sepia:             #5b3a1a;
  --sepia-soft:        #7a5a3a;
  --sepia-faded:       #a48462;

  --vermillion:        #c0392b;
  --vermillion-soft:   #d65a4a;
  --aniline-purple:    #5a3a86;

  /* ===== PAPER ============================================================= */
  --paper:             #f2e8d2;
  --paper-laid:        #ebdfc0;
  --paper-manila:      #e5d3a8;
  --paper-edge:        #d6c195;
  --foxing:            #c9a07a;
  --foxing-deep:       #8a6038;

  /* ===== SEMANTIC ROLES =================================================== */
  --fg-1:              var(--ink);
  --fg-2:              var(--ink-soft);
  --fg-3:              var(--ink-faded);
  --fg-script:         var(--aniline-purple);
  --fg-stamp:          var(--vermillion);
  --fg-cancel:         var(--aniline-purple);
  --fg-alt:            var(--sepia);

  --bg-page:           var(--paper);
  --bg-card:           var(--paper-laid);
  --bg-envelope:       var(--paper-manila);
  --bg-emphasis:       #e0d2a8;

  --rule:              var(--ink);
  --rule-soft:         #6b5a3a;

  /* ===== TYPE FACES ======================================================== */
  --face-fat:          'Playfair Display', 'IM Fell DW Pica', serif;
  --face-wood:         'Rye', 'IM Fell DW Pica', serif;
  --face-engraved:     'Cinzel', 'IM Fell DW Pica SC', 'IM Fell DW Pica', serif;
  --face-roman:        'IM Fell DW Pica', 'IM Fell English', Georgia, serif;
  --face-italic:       'IM Fell DW Pica', Georgia, serif;
  --face-script:       'Pinyon Script', 'Petit Formal Script', cursive;
  --face-typewriter:   'Special Elite', 'Courier Prime', ui-monospace, monospace;
  --face-mono:         'JetBrains Mono', 'IBM Plex Mono', ui-monospace, monospace;

  /* ===== SIZES ============================================================ */
  --size-marquee:      96px;
  --size-display:      56px;
  --size-banderole:    34px;
  --size-h1:           28px;
  --size-h2:           20px;
  --size-h3:           15px;
  --size-body:         16px;
  --size-body-sm:      14px;
  --size-fine:         12px;
  --size-mono:         13.5px;

  /* ===== TRACKING ========================================================= */
  --track-fat:         -0.02em;
  --track-wood:         0.01em;
  --track-engraved:     0.12em;
  --track-engraved-wide: 0.28em;
  --track-body:         0;
  --track-script:       0;

  /* ===== LEADING ========================================================== */
  --lead-display:       0.95;
  --lead-banderole:     1.05;
  --lead-body:          1.55;
  --lead-script:        1.35;
  --lead-mono:          1.55;

  /* ===== STRUCTURAL TOKENS ================================================ */
  --radius-none:       0;
  --radius-hair:       1px;
  --rule-hair:         1px solid var(--ink);
  --rule-hair-soft:    1px solid var(--rule-soft);
  --rule-double:       3px double var(--ink);
  --rule-heavy:        2px solid var(--ink);

  --shadow-none:       none;
  --shadow-engrave:    inset 0 1px 0 rgba(255,250,235,0.6), 0 1px 0 rgba(26,34,51,0.15);

  /* ===== SPACING ========================================================== */
  --space-1:           4px;
  --space-2:           8px;
  --space-3:           12px;
  --space-4:           16px;
  --space-5:           24px;
  --space-6:           32px;
  --space-7:           48px;
  --space-8:           64px;

  --margin-masthead:   var(--space-7);
  --margin-section:    var(--space-6);
  --margin-paragraph:  var(--space-4);
}

/* ==========================================================================
   RESET
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { margin: 0; padding: 0; }

/* ==========================================================================
   PAPER — body fills the viewport with cream paper, foxing in the corners,
   subtle edge darkening. No wood-desk surround.
   ========================================================================== */
body {
  font-family: var(--face-roman);
  font-size: var(--size-body);
  line-height: var(--lead-body);
  color: var(--fg-1);
  min-height: 100vh;
  background-color: var(--paper);
  background-image:
    radial-gradient(ellipse at 10% 8%,  rgba(201,160,122,0.20) 0%, transparent 32%),
    radial-gradient(ellipse at 92% 6%,  rgba(138, 96, 56, 0.12) 0%, transparent 28%),
    radial-gradient(ellipse at 88% 94%, rgba(201,160,122,0.22) 0%, transparent 32%),
    radial-gradient(ellipse at 6%  92%, rgba(138, 96, 56, 0.12) 0%, transparent 25%),
    radial-gradient(ellipse at 50% 50%, rgba(242,232,210,0) 60%, rgba(214,193,149,0.40) 100%);
  background-attachment: fixed;
}

/* ==========================================================================
   READING COLUMN
   ========================================================================== */
body > main {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-5) var(--space-8);
}

article { width: 100%; }

/* ==========================================================================
   SKIP LINK
   ========================================================================== */
.skip-link {
  position: fixed;
  top: 12px;
  left: 50%;
  transform: translateX(-50%) translateY(-200%);
  background: var(--paper);
  color: var(--ink);
  padding: 8px 18px;
  border: 1px solid var(--ink);
  font-family: var(--face-engraved);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  text-decoration: none;
  z-index: 1000;
  transition: transform 150ms cubic-bezier(0.25, 0.1, 0.25, 1);
}
.skip-link:focus { transform: translateX(-50%) translateY(0); }

/* ==========================================================================
   MASTHEAD — trim variant for all pages (wordmark + tagline + nav)
   ========================================================================== */
body > header.masthead {
  max-width: 980px;
  margin: 0 auto;
  padding: var(--space-5) var(--space-5) var(--space-3);
}
.bm-trim {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--ink);
  position: relative;
}
.bm-trim-wordmark {
  font-family: var(--face-fat);
  font-weight: 900;
  font-size: 26px;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--fg-1);
  text-decoration: none;
  line-height: 1;
}
.bm-trim-wordmark .amp {
  font-family: var(--face-script);
  font-weight: 400;
  font-size: 0.95em;
  color: var(--ink-soft);
  text-transform: none;
  letter-spacing: 0;
}
.bm-trim-tag {
  font-family: var(--face-engraved);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg-2);
  text-align: center;
}
.bm-nav {
  display: flex;
  align-items: center;
  gap: 0;
  font-family: var(--face-engraved);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.bm-nav a {
  color: var(--fg-1);
  text-decoration: none;
  padding: 4px 10px;
  border-bottom: 1px solid transparent;
  transition: color 150ms cubic-bezier(0.25, 0.1, 0.25, 1),
              border-color 150ms cubic-bezier(0.25, 0.1, 0.25, 1);
}
.bm-nav a:hover { color: var(--vermillion); border-bottom-color: var(--vermillion); }
.bm-nav a.cur { color: var(--vermillion); border-bottom-color: var(--vermillion); }

/* ==========================================================================
   SEMANTIC TYPOGRAPHY — applies to markdown-rendered prose
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--face-engraved);
  font-weight: 700;
  letter-spacing: var(--track-engraved);
  text-transform: uppercase;
  color: var(--fg-1);
  text-wrap: balance;
}
h1 { font-size: var(--size-h1); margin: 0 0 var(--space-4); }
h2 { font-size: var(--size-h2); margin: var(--space-6) 0 var(--space-3); }
h3 { font-size: var(--size-h3); margin: var(--space-5) 0 var(--space-2); color: var(--fg-2); }
h4 { font-size: 13px; margin: var(--space-4) 0 var(--space-2); color: var(--fg-2); letter-spacing: 0.10em; }

p, li {
  font-family: var(--face-roman);
  font-size: var(--size-body);
  line-height: var(--lead-body);
  text-wrap: pretty;
}
p { margin: 0 0 var(--margin-paragraph); }

em, i { font-family: var(--face-roman); font-style: italic; color: var(--fg-1); }
strong, b { font-family: var(--face-roman); font-weight: 700; }

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color 150ms cubic-bezier(0.25, 0.1, 0.25, 1);
}
a:hover { color: var(--vermillion); }

/* Lists — restrained: bullet markers are tiny serif fleurons */
ul, ol { padding-left: 0; list-style: none; margin: 0 0 var(--space-4); }
ul li, ol li { padding: 4px 0 4px 22px; position: relative; }
ul li::before {
  content: '\2766';
  position: absolute;
  left: 2px; top: 4px;
  font-family: serif;
  color: var(--fg-2);
  font-size: 14px;
  line-height: var(--lead-body);
}
ol { counter-reset: olnum; }
ol li::before {
  counter-increment: olnum;
  content: counter(olnum) ".";
  position: absolute;
  left: 0; top: 4px;
  font-family: var(--face-engraved);
  font-weight: 700;
  font-size: 13px;
  color: var(--fg-2);
  letter-spacing: 0;
}
li > ul, li > ol { margin: 6px 0 0; }
li > ul li, li > ol li { padding-left: 18px; }

/* Code — modern engineer's voice */
code, kbd, samp {
  font-family: var(--face-mono);
  font-size: var(--size-mono);
  color: var(--fg-1);
  background: rgba(26,34,51,0.06);
  padding: 1px 5px;
  border: 1px solid rgba(26,34,51,0.12);
}

pre {
  font-family: var(--face-mono);
  font-size: var(--size-mono);
  line-height: var(--lead-mono);
  color: var(--fg-1);
  background: rgba(235, 223, 192, 0.45);
  padding: var(--space-4) var(--space-4) var(--space-4) var(--space-4);
  border: 1px solid var(--ink);
  outline: 1px solid var(--ink);
  outline-offset: 4px;
  overflow-x: auto;
  margin: var(--space-5) 0 var(--space-6);
}
pre code { background: transparent; border: 0; padding: 0; }

/* Chroma syntax highlighter — strip the stark-white backgrounds and
   let the cream-paper-toned <pre> surround show through. */
.chroma, pre.chroma, div.chroma { background: transparent !important; }
.bg { background: transparent !important; }

/* Blockquote — italic body with engrosser's-script opening quote */
blockquote {
  font-family: var(--face-roman);
  font-style: italic;
  font-size: 18px;
  line-height: 1.5;
  margin: var(--space-5) 0;
  padding-left: var(--space-5);
  border-left: 0;
  color: var(--fg-1);
  position: relative;
}
blockquote::before {
  content: '\201C';
  font-family: var(--face-fat);
  font-size: 64px;
  color: var(--fg-2);
  position: absolute;
  left: -8px;
  top: -12px;
  line-height: 1;
}
blockquote p { margin-bottom: var(--space-3); }
blockquote p:last-child { margin-bottom: 0; }

/* Horizontal rule — sprig engraving as ornament */
hr {
  border: 0;
  margin: var(--space-6) 0;
  text-align: center;
  height: auto;
}
hr::before {
  content: '';
  display: inline-block;
  width: 240px;
  height: 24px;
  background-image: url('/images/engravings/sprig-1.png');
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  mix-blend-mode: multiply;
  filter: contrast(1.05);
  opacity: 0.85;
}

/* Tables — ledger style */
table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-5) 0;
  font-family: var(--face-roman);
  font-size: var(--size-body-sm);
}
thead th {
  font-family: var(--face-engraved);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-align: left;
  color: var(--fg-2);
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--ink);
}
tbody td {
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px dashed rgba(91,58,26,0.35);
  vertical-align: top;
  color: var(--fg-1);
}
tbody tr:hover td { background: rgba(192, 57, 43, 0.04); }

/* Images in flow */
article img {
  max-width: 100%;
  height: auto;
  mix-blend-mode: multiply;
  filter: contrast(1.05);
  display: block;
  margin: var(--space-5) auto;
}

/* ==========================================================================
   ARTICLE — eyebrow, fat title, dek + date stamp, body
   ========================================================================== */
article > header {
  margin-bottom: var(--space-6);
  text-align: center;
  position: relative;
}
.art-eyebrow {
  font-family: var(--face-engraved);
  font-size: 11px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--fg-2);
  margin-bottom: var(--space-1);
}
.art-eyebrow::before, .art-eyebrow::after {
  content: '\2766';
  margin: 0 8px;
  font-family: serif;
  vertical-align: -1px;
}
article > header h1 {
  font-family: var(--face-fat);
  font-weight: 900;
  font-size: 48px;
  line-height: 1.02;
  letter-spacing: -0.015em;
  text-transform: uppercase;
  text-align: center;
  text-wrap: balance;
  margin: var(--space-2) 0 var(--space-3);
  color: var(--fg-1);
}
.art-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-3);
}

/* Date stamp — circular aniline-purple rubber stamp */
.date-stamp-lg {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  border: 2px double var(--aniline-purple);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--aniline-purple);
  font-family: var(--face-engraved);
  text-align: center;
  transform: rotate(-3deg);
  flex-shrink: 0;
  line-height: 1;
}
.date-stamp-lg .city { font-size: 8px; letter-spacing: 0.20em; margin-bottom: 2px; }
.date-stamp-lg .mo   { font-size: 12px; letter-spacing: 0.12em; }
.date-stamp-lg .day  { font-size: 22px; font-weight: 700; margin: 2px 0; }
.date-stamp-lg .yr   { font-size: 10px; letter-spacing: 0.10em; }

/* Article body — h2 gets the centered engraved sub-section treatment */
article > .art-body, article > section {
  max-width: 660px;
  margin: 0 auto;
}
.art-body h2, article > section > h2 {
  font-family: var(--face-engraved);
  font-size: 17px;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  text-align: center;
  margin: var(--space-7) 0 var(--space-3);
  color: var(--fg-1);
  position: relative;
}
.art-body h2::after, article > section > h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 1px;
  background: var(--ink);
  margin: var(--space-2) auto 0;
}

/* ==========================================================================
   ARTICLE CLOSING — signature with engraver's script
   ========================================================================== */
.art-closing { margin-top: var(--space-7); }
.art-closing .closing-orn {
  text-align: center;
  font-family: serif;
  font-size: 22px;
  color: var(--fg-2);
  margin: var(--space-5) 0 var(--space-2);
  letter-spacing: 1.2em;
}
.art-closing .yours {
  font-family: var(--face-roman);
  font-style: italic;
  font-size: 15px;
  text-align: right;
  margin: var(--space-5) 0 var(--space-1);
  color: var(--fg-1);
}
.art-closing .signature .name {
  font-family: var(--face-script);
  font-size: 52px;
  color: var(--fg-script);
  line-height: 1;
  text-align: right;
  margin-right: var(--space-6);
}
.art-closing .signature .role {
  font-family: var(--face-engraved);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--fg-2);
  text-align: right;
  margin-top: var(--space-2);
}

.art-back {
  margin: var(--space-7) 0 0;
  padding-top: var(--space-4);
  border-top: 3px double var(--ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--face-engraved);
  font-size: 11px;
  letter-spacing: 0.20em;
  text-transform: uppercase;
}
.art-back a { color: var(--fg-1); text-decoration: none; }
.art-back a:hover { color: var(--vermillion); }

/* ==========================================================================
   INDEX — /blog and /articles render markdown <ul> as a ledger list
   ========================================================================== */
body[data-path="/blog"] article > section > ul,
body[data-path="/blog/"] article > section > ul,
body[data-path="/articles"] article > section > ul,
body[data-path="/articles/"] article > section > ul,
body[data-path="/blog"] article > ul,
body[data-path="/blog/"] article > ul,
body[data-path="/articles"] article > ul,
body[data-path="/articles/"] article > ul {
  list-style: none;
  padding: 0;
  margin: var(--space-5) 0 var(--space-6);
}
body[data-path="/blog"] article ul li,
body[data-path="/blog/"] article ul li,
body[data-path="/articles"] article ul li,
body[data-path="/articles/"] article ul li {
  padding: var(--space-4) 0;
  border-top: 1px solid var(--ink);
  position: relative;
}
body[data-path="/blog"] article ul li::before,
body[data-path="/blog/"] article ul li::before,
body[data-path="/articles"] article ul li::before,
body[data-path="/articles/"] article ul li::before {
  content: none;
}
body[data-path="/blog"] article ul li:last-of-type,
body[data-path="/blog/"] article ul li:last-of-type,
body[data-path="/articles"] article ul li:last-of-type,
body[data-path="/articles/"] article ul li:last-of-type {
  border-bottom: 1px solid var(--ink);
}
body[data-path="/blog"] article ul li:hover,
body[data-path="/blog/"] article ul li:hover,
body[data-path="/articles"] article ul li:hover,
body[data-path="/articles/"] article ul li:hover {
  background: rgba(192, 57, 43, 0.04);
}
body[data-path="/blog"] article ul li a,
body[data-path="/blog/"] article ul li a,
body[data-path="/articles"] article ul li a,
body[data-path="/articles/"] article ul li a {
  display: block;
  font-family: var(--face-engraved);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fg-1);
  text-decoration: none;
  margin-bottom: var(--space-1);
  line-height: 1.25;
}
body[data-path="/blog"] article ul li a:hover,
body[data-path="/blog/"] article ul li a:hover,
body[data-path="/articles"] article ul li a:hover,
body[data-path="/articles/"] article ul li a:hover {
  color: var(--vermillion);
}

/* The index intro paragraph(s) before the listing */
body[data-path="/blog"] article > header h1,
body[data-path="/blog/"] article > header h1,
body[data-path="/articles"] article > header h1,
body[data-path="/articles/"] article > header h1 {
  font-size: 64px;
}

/* ==========================================================================
   ABOUT — portrait frame on the left, letter on the right
   ========================================================================== */
.about-body {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-6);
  align-items: start;
  margin-top: var(--space-5);
}
.about-portrait {
  border: 1px solid var(--ink);
  outline: 1px solid var(--ink);
  outline-offset: 4px;
  background: var(--paper-laid);
  padding: var(--space-2);
}
.about-portrait .frame-inner {
  background: var(--paper);
  aspect-ratio: 3/4;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.about-portrait .frame-inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  mix-blend-mode: multiply;
  display: block;
  margin: 0;
}
.about-portrait .frame-cap {
  text-align: center;
  margin-top: var(--space-2);
  font-family: var(--face-engraved);
  font-size: 10px;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.about-letter h1 {
  font-family: var(--face-fat);
  font-weight: 900;
  font-size: 48px;
  line-height: 1;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin: 0 0 var(--space-1);
  color: var(--fg-1);
  text-align: left;
}
.about-letter .about-role {
  font-family: var(--face-engraved);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg-2);
  margin-bottom: var(--space-3);
}
.about-letter .salutation {
  font-family: var(--face-script);
  font-size: 30px;
  color: var(--fg-script);
  line-height: 1;
  margin: var(--space-4) 0 var(--space-1);
}
.about-letter p {
  font-family: var(--face-roman);
  font-size: 16px;
  line-height: 1.65;
  margin: 0 0 var(--space-3);
}
.about-letter .about-particulars {
  width: auto;
  margin: var(--space-4) 0;
  border-collapse: collapse;
  font-family: var(--face-roman);
  font-size: 15px;
}
.about-letter .about-particulars th,
.about-letter .about-particulars td {
  border: 0;
  background: transparent;
  padding: var(--space-1) var(--space-3) var(--space-1) 0;
  vertical-align: top;
  text-align: left;
}
.about-letter .about-particulars th {
  font-family: var(--face-engraved);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-2);
  font-weight: normal;
  white-space: nowrap;
  padding-right: var(--space-5);
}
.about-letter .about-particulars td {
  color: var(--fg-1);
  line-height: 1.5;
}
.about-letter .about-particulars tbody tr:hover td { background: transparent; }

/* On the about page (data-path="/"), suppress the article header treatment
   and let the .about-body grid do the layout. */
body[data-path="/"] article > header { display: none; }

/* On the articles index, also suppress the H1 — the .idx-intro letter
   replaces it. */
body[data-path="/articles"] article > header,
body[data-path="/articles/"] article > header,
body[data-path="/blog"] article > header,
body[data-path="/blog/"] article > header { display: none; }

/* ==========================================================================
   INDEX INTRO — letter form (Dear Sir or Madam, …)
   ========================================================================== */
.idx-intro--letter {
  display: block;
  margin: var(--space-4) 0 var(--space-5);
}
.idx-intro--letter .salutation {
  font-family: var(--face-script);
  font-size: 30px;
  color: var(--fg-script);
  line-height: 1.1;
  margin: 0 0 var(--space-1);
}
.idx-intro--letter p {
  font-family: var(--face-roman);
  font-size: 16px;
  line-height: 1.65;
  margin: 0 0 var(--space-2);
  color: var(--fg-1);
}
.idx-signature {
  font-family: var(--face-script);
  font-size: 44px;
  color: var(--fg-script);
  line-height: 1;
  text-align: right;
  margin: var(--space-3) var(--space-5) 0 0;
}

/* ==========================================================================
   404 — Returned to Sender envelope
   ========================================================================== */
.rts {
  position: relative;
  padding: var(--space-7) var(--space-4) var(--space-8);
  text-align: center;
}
.rts .envelope {
  width: 560px;
  max-width: 100%;
  margin: 0 auto;
  border: 1px solid var(--ink);
  outline: 1px solid var(--ink);
  outline-offset: 5px;
  background: var(--paper-manila);
  background-image:
    repeating-linear-gradient(45deg,
      transparent 0 9px,
      rgba(192,57,43,0.75) 9px 12px,
      transparent 12px 18px,
      rgba(26,34,51,0.85) 18px 21px,
      transparent 21px 30px);
  padding: var(--space-4);
  position: relative;
}
.rts .envelope-inside {
  background: var(--paper-laid);
  padding: var(--space-7) var(--space-5);
  border: 1px solid var(--ink);
  position: relative;
}
.rts .stamp-rts {
  display: inline-block;
  padding: 8px 18px 10px;
  border: 4px double var(--vermillion);
  color: var(--vermillion);
  font-family: var(--face-engraved);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transform: rotate(-4deg);
  background: rgba(192,57,43,0.04);
  margin-bottom: var(--space-6);
}
.rts .err-num {
  font-family: var(--face-fat);
  font-weight: 900;
  font-size: 140px;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--fg-1);
  margin: 0;
}
.rts .err-msg {
  font-family: var(--face-engraved);
  font-size: 14px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg-2);
  margin: var(--space-3) 0 var(--space-4);
}
.rts .err-msg::before, .rts .err-msg::after {
  content: '\2766';
  margin: 0 10px;
  font-family: serif;
  color: var(--fg-3);
}
.rts .err-cite {
  font-family: var(--face-roman);
  font-style: italic;
  font-size: 16px;
  line-height: 1.5;
  max-width: 360px;
  margin: 0 auto var(--space-5);
  color: var(--fg-1);
}
.rts .err-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.rts .err-actions a {
  font-family: var(--face-engraved);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--ink);
  padding: 8px 16px;
  color: var(--fg-1);
  background: var(--paper);
}
.rts .err-actions a:hover { background: var(--ink); color: var(--paper); }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 760px) {
  body > main { padding: var(--space-4) var(--space-3) var(--space-7); }
  body > header.masthead { padding: var(--space-4) var(--space-3) var(--space-3); }

  .bm-trim { grid-template-columns: 1fr; gap: var(--space-2); text-align: center; padding-bottom: var(--space-3); }
  .bm-trim-wordmark { font-size: 22px; }
  .bm-trim-tag { display: none; }
  .bm-nav { justify-content: center; }

  article > header h1 { font-size: 36px; }
  .art-body h2 { font-size: 15px; letter-spacing: 0.16em; margin-top: var(--space-6); }

  .about-body { grid-template-columns: 1fr; gap: var(--space-4); }
  .about-portrait { max-width: 200px; margin: 0 auto; }
  .about-letter h1 { font-size: 36px; text-align: center; }
  .about-letter .about-role { text-align: center; }

  .rts .err-num { font-size: 96px; }
  pre { margin-left: calc(var(--space-3) * -1); margin-right: calc(var(--space-3) * -1); }
}

/* ==========================================================================
   ACCESSIBILITY — reduced motion, focus rings
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

a:focus-visible {
  outline: 2px solid var(--vermillion);
  outline-offset: 2px;
}
.skip-link:focus-visible {
  outline: 2px solid var(--vermillion);
  outline-offset: 2px;
}

/* ==========================================================================
   PRINT — engravings stay, paper goes white-ish for ink savings
   ========================================================================== */
@media print {
  body { background: white; }
  body > header.masthead, .art-back, .skip-link { display: none !important; }
  pre, blockquote { break-inside: avoid; }
}