/* ==========================================================================
   OOPBuy Spreadsheet — Snapshot vs Current / Version Frames theme
   Warm cream · photographic black · high-sat cyan · amber-orange · magenta
   (difference) · ink green (confirmation boundary)
   Signatures: frame counter, registration mark, crop edge, version tab,
   difference circle, grease-pencil underline
   ========================================================================== */

:root {
  /* palette */
  --cream:      #FBF7EE;
  --cream-2:    #F4EEE1;
  --cream-3:    #E9E0CC;
  --paper:      #FFFFFF;
  --ink:        #141311;
  --ink-2:      #0E0D0B;
  --ink-soft:   #4C4942;
  --ink-faint:  #948D80;
  --cyan:       #00A8C8;
  --cyan-d:     #007E9A;
  --cyan-s:     #DDF4FA;
  --amber:      #F07818;
  --amber-d:    #C65E10;
  --amber-s:    #FDEAD2;
  --magenta:    #E02E7F;
  --magenta-d:  #A82467;
  --magenta-s:  #FBE0EF;
  --green:      #1E6F55;
  --green-d:    #15523F;
  --green-s:    #DDF0E9;
  --line:       #E3DAC5;
  --line-soft:  #EDE5D3;

  /* typography */
  --serif: Georgia, 'Times New Roman', Times, serif;
  --sans: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;

  /* geometry */
  --radius: 14px;
  --radius-sm: 8px;
  --container: 1140px;
  --shadow-sm: 0 1px 2px rgba(20, 19, 17, 0.05), 0 2px 8px rgba(20, 19, 17, 0.06);
  --shadow-md: 0 4px 14px rgba(20, 19, 17, 0.10), 0 12px 32px rgba(20, 19, 17, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- accessibility ---------- */
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--ink); color: #fff; padding: 10px 16px; z-index: 200; border-radius: 0 0 var(--radius-sm) 0; }
.skip-link:focus { left: 0; }
:focus-visible { outline: 3px solid var(--cyan); outline-offset: 2px; border-radius: 3px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; margin: -1px; padding: 0; border: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- layout ---------- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 22px; }

/* ---------- header ---------- */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(251, 247, 238, 0.92); backdrop-filter: saturate(140%) blur(8px); border-bottom: 1px solid var(--line-soft); }
.header-inner { display: flex; align-items: center; gap: 20px; height: 66px; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; color: var(--ink); }
.brand img { width: 34px; height: 34px; display: block; border-radius: 7px; }
.brand-name { font-family: var(--serif); font-weight: 700; font-size: 1.06rem; letter-spacing: 0.01em; }
.brand-name small { display: block; font-family: var(--sans); font-weight: 600; font-size: 0.66rem; color: var(--ink-faint); letter-spacing: 0.14em; text-transform: uppercase; }

.main-nav { margin-left: auto; }
.main-nav ul { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.main-nav a { display: block; padding: 8px 12px; text-decoration: none; color: var(--ink-soft); font-weight: 600; font-size: 0.9rem; border-radius: var(--radius-sm); }
.main-nav a:hover { background: var(--cream-2); color: var(--ink); }
.main-nav a.active { color: var(--cyan-d); background: var(--cyan-s); }

.mobile-nav-toggle { display: none; margin-left: auto; width: 44px; height: 44px; border: 1px solid var(--line); background: #fff; border-radius: var(--radius-sm); cursor: pointer; color: var(--ink); }
.mobile-nav-toggle svg { display: block; margin: 0 auto; }

@media (max-width: 860px) {
  .main-nav { display: none; }
  .mobile-nav-toggle { display: block; }
  .main-nav.open { display: block; position: absolute; left: 0; right: 0; top: 66px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow-md); }
  .main-nav.open ul { flex-direction: column; align-items: stretch; gap: 2px; padding: 8px; }
  .main-nav.open a { padding: 12px 14px; }
}

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 22px; border-radius: 999px; text-decoration: none; font-weight: 700; font-size: 0.98rem; line-height: 1.2; border: 1.5px solid transparent; transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--amber); color: #fff; box-shadow: 0 4px 14px rgba(240, 120, 24, 0.30); }
.btn-primary:hover { background: var(--amber-d); box-shadow: 0 6px 18px rgba(240, 120, 24, 0.38); }
.btn-secondary { background: #fff; color: var(--ink); border-color: var(--line); box-shadow: var(--shadow-sm); }
.btn-secondary:hover { border-color: var(--ink-soft); background: #fff; }
.btn-sm { padding: 9px 16px; font-size: 0.88rem; }

/* ---------- hero ---------- */
.hero-section { padding: 56px 0 44px; position: relative; overflow: hidden; background: radial-gradient(circle at 85% 8%, var(--cyan-s) 0, transparent 42%), radial-gradient(circle at 6% 92%, var(--magenta-s) 0, transparent 40%); }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 44px; align-items: center; }
.hero-badge { display: inline-block; padding: 5px 13px; border-radius: 999px; background: var(--cyan-s); color: var(--cyan-d); font-weight: 700; font-size: 0.76rem; letter-spacing: 0.08em; text-transform: uppercase; }
.hero-title { font-family: var(--serif); font-size: clamp(2.05rem, 4.6vw, 3.1rem); line-height: 1.12; color: var(--ink-2); margin: 18px 0 16px; font-weight: 700; }
.hero-title em { font-style: normal; color: var(--cyan-d); }
.hero-description { font-size: 1.08rem; color: var(--ink-soft); max-width: 34em; margin: 0 0 26px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* hero contact-sheet of three version frames */
.hero-visual { position: relative; display: flex; justify-content: center; }
.contact-sheet {
  position: relative; width: 340px; padding: 20px 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: var(--shadow-md);
}
/* film sprocket strips along left and right edges */
.contact-sheet::before, .contact-sheet::after {
  content: ""; position: absolute; top: 8px; bottom: 8px; width: 9px;
  background: repeating-linear-gradient(180deg, var(--cream-3) 0 7px, transparent 7px 16px);
  border-radius: 2px;
}
.contact-sheet::before { left: 5px; }
.contact-sheet::after { right: 5px; }
.contact-sheet .sheet-inner { position: relative; margin: 0 10px; display: flex; flex-direction: column; gap: 12px; }

.frame {
  position: relative; background: var(--cream); border: 1px solid var(--line);
  border-radius: 4px; padding: 22px 14px 12px;
}
/* crop-edge corner ticks */
.frame::before, .frame::after {
  content: ""; position: absolute; width: 10px; height: 10px; border: 2px solid var(--cyan); opacity: 0.5;
}
.frame::before { top: 5px; left: 5px; border-right: 0; border-bottom: 0; }
.frame::after { bottom: 5px; right: 5px; border-left: 0; border-top: 0; }

.frame-counter { position: absolute; top: 5px; right: 9px; font-family: var(--mono); font-size: 0.56rem; font-weight: 800; letter-spacing: 0.1em; color: var(--ink-faint); }
.version-tab { position: absolute; top: -9px; left: 12px; font-family: var(--mono); font-size: 0.54rem; font-weight: 800; letter-spacing: 0.1em; padding: 2px 8px; border-radius: 3px; color: #fff; }
.frame-snapshot .version-tab { background: var(--cyan); }
.frame-current .version-tab { background: var(--amber); }
.frame-question .version-tab { background: var(--magenta); }

.frame-lines { display: flex; flex-direction: column; gap: 6px; }
.fl { display: block; height: 7px; border-radius: 2px; background: var(--cream-3); }
.fl.w80 { width: 80%; }
.fl.w70 { width: 70%; }
.fl.w60 { width: 60%; }
.fl.w40 { width: 40%; }
.fl.w30 { width: 30%; }
/* grease-pencil underline on a text line */
.fl.grease { border-bottom: 2px solid var(--amber); height: 5px; }
/* difference highlight */
.fl.diff { background: var(--magenta); opacity: 0.75; }
/* time-marker ticks (no concrete dates) */
.fl.time { height: 4px; width: 46%; background: repeating-linear-gradient(90deg, var(--ink-faint) 0 3px, transparent 3px 6px); border-radius: 0; }

.diff-circle { position: absolute; right: 10px; bottom: 9px; width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--magenta); color: var(--magenta-d); display: grid; place-items: center; font-family: var(--mono); font-weight: 800; font-size: 0.62rem; }
.q-dot { position: absolute; right: 10px; bottom: 9px; width: 20px; height: 20px; border-radius: 50%; background: var(--magenta); color: #fff; display: grid; place-items: center; font-family: var(--mono); font-weight: 800; font-size: 0.68rem; }

/* registration mark crosshair */
.reg-mark { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); width: 34px; height: 34px; pointer-events: none; opacity: 0.22; }
.reg-mark::before, .reg-mark::after { content: ""; position: absolute; background: var(--ink); }
.reg-mark::before { left: 0; right: 0; top: 50%; height: 1px; }
.reg-mark::after { top: 0; bottom: 0; left: 50%; width: 1px; }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; gap: 26px; }
  .hero-section { padding-top: 34px; }
  .contact-sheet { width: 100%; max-width: 360px; }
}

/* ---------- section scaffolding ---------- */
.section { padding: 46px 0; }
.section-alt { background: var(--cream-2); }
.section-header { max-width: 680px; margin: 0 auto 34px; text-align: center; }
.eyebrow { display: inline-block; font-size: 0.76rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--cyan-d); }
.section-title { font-family: var(--serif); font-size: clamp(1.6rem, 3.4vw, 2.15rem); color: var(--ink-2); margin: 10px 0 12px; line-height: 1.2; }
.section-lead { color: var(--ink-soft); font-size: 1.02rem; margin: 0; }

/* ---------- category grid (contact-sheet frames) ---------- */
.categories-section { padding-top: 10px; }
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.cat-card {
  position: relative; display: flex; flex-direction: column; gap: 9px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 16px 14px; text-decoration: none; color: var(--ink);
  box-shadow: var(--shadow-sm); transition: transform 0.14s ease, box-shadow 0.14s ease, border-color 0.14s ease;
}
.cat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--cyan); }
/* sprocket perforation edge along the top */
.cat-card::before {
  content: ""; position: absolute; top: 4px; left: 10px; right: 10px; height: 8px;
  background: repeating-linear-gradient(90deg, var(--cream-3) 0 5px, transparent 5px 12px);
  border-radius: 3px;
}
.cat-top { display: flex; align-items: flex-start; justify-content: space-between; margin-top: 6px; }
.cat-code { font-family: var(--mono); font-size: 0.72rem; color: var(--ink-faint); letter-spacing: 0.06em; }
.cat-spec { font-family: var(--serif); font-size: 1.5rem; font-weight: 800; color: var(--ink-2); line-height: 1; }
.cat-icon { width: 28px; height: 28px; color: var(--cyan-d); }
.cat-icon svg { width: 100%; height: 100%; filter: drop-shadow(0 0.7px 0 currentColor); }
.cat-name { font-weight: 700; color: var(--ink-2); font-size: 0.97rem; line-height: 1.3; }
.cat-card .cat-arrow { margin-top: auto; font-size: 0.8rem; font-weight: 700; color: var(--cyan-d); }
.cat-card::after { content: ""; position: absolute; top: 8px; right: 8px; width: 9px; height: 9px; border: 1.5px solid var(--ink-faint); border-radius: 50%; opacity: 0.45; }

@media (max-width: 900px) {
  .cat-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .cat-card { padding: 17px 13px 12px; }
}

/* ---------- Six Fields Can Change Separately (contact strip) ---------- */
.six-strip { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; }
.field-frame {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 18px 12px 14px; box-shadow: var(--shadow-sm);
}
.field-frame::before { content: ""; position: absolute; top: 4px; left: 8px; right: 8px; height: 6px; background: repeating-linear-gradient(90deg, var(--cream-3) 0 4px, transparent 4px 9px); border-radius: 2px; }
.field-frame .f-num { display: block; font-family: var(--mono); font-size: 0.66rem; font-weight: 800; letter-spacing: 0.1em; color: var(--cyan-d); margin-top: 4px; }
.field-frame .f-name { display: block; font-family: var(--serif); font-weight: 700; font-size: 1rem; color: var(--ink-2); margin: 4px 0 4px; }
.field-frame .f-desc { color: var(--ink-soft); font-size: 0.82rem; line-height: 1.45; }
@media (max-width: 900px) {
  .six-strip { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .six-strip { grid-template-columns: 1fr; }
  .field-frame { padding: 16px 14px 13px; }
}

/* ---------- Version Frames (4 frames) ---------- */
.frame-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.vframe {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 18px 18px; box-shadow: var(--shadow-sm);
}
.vframe::before { content: ""; position: absolute; top: 6px; left: 6px; width: 9px; height: 9px; border: 2px solid var(--cyan); border-right: 0; border-bottom: 0; opacity: 0.55; }
.vframe .v-tab { display: inline-block; font-family: var(--mono); font-size: 0.66rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; padding: 3px 9px; border-radius: 3px; color: #fff; margin-bottom: 10px; }
.vframe.v-snapshot .v-tab { background: var(--cyan); }
.vframe.v-current .v-tab { background: var(--amber); }
.vframe.v-difference .v-tab { background: var(--magenta); }
.vframe.v-question .v-tab { background: var(--magenta-d); }
.vframe h3 { font-family: var(--serif); font-size: 1.18rem; color: var(--ink-2); margin: 0 0 8px; }
.vframe p { color: var(--ink-soft); font-size: 0.92rem; margin: 0; }
@media (max-width: 900px) { .frame-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .frame-grid { grid-template-columns: 1fr; } }

/* ---------- signatures ---------- */
.frame-note { border-left: 3px solid var(--cyan); background: var(--cyan-s); padding: 14px 16px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 18px 0; font-size: 0.94rem; color: #0B5A6E; }
.frame-note strong { display: block; font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 4px; color: var(--cyan-d); }

.diff-note { display: inline-flex; align-items: center; gap: 9px; padding: 10px 14px; border: 1px dashed var(--magenta); border-radius: var(--radius-sm); background: var(--magenta-s); color: #8A1D5A; font-weight: 600; font-size: 0.92rem; margin: 10px 0; }
.diff-note .qmark { flex: none; width: 24px; height: 24px; border-radius: 50%; background: var(--magenta); color: #fff; display: grid; place-items: center; font-weight: 800; }

.green-note { display: inline-flex; align-items: center; gap: 9px; padding: 10px 14px; border: 1px solid var(--green); border-radius: var(--radius-sm); background: var(--green-s); color: #124532; font-weight: 600; font-size: 0.92rem; margin: 10px 0; }
.green-note .qmark { flex: none; width: 24px; height: 24px; border-radius: 50%; background: var(--green); color: #fff; display: grid; place-items: center; font-weight: 800; }

.example-flag { display: inline-block; margin-top: 14px; font-size: 0.74rem; color: var(--ink-faint); font-style: italic; border-top: 1px dashed var(--line); padding-top: 8px; }

/* ---------- duo grid ---------- */
.duo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.duo-col { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.duo-col h3 { margin: 0 0 10px; font-size: 1.02rem; display: flex; align-items: center; gap: 9px; color: var(--ink-2); }
.duo-col ul { margin: 0; padding-left: 18px; color: var(--ink-soft); font-size: 0.94rem; }
.duo-col ul li { margin: 6px 0; }
.duo-col .mark { flex: none; width: 22px; height: 22px; border-radius: 5px; display: grid; place-items: center; font-size: 0.78rem; color: #fff; font-family: var(--mono); }
.duo-col.is-a .mark { background: var(--green); }
.duo-col.is-b .mark { background: var(--magenta); }
@media (max-width: 720px) { .duo-grid { grid-template-columns: 1fr; } }

/* ---------- recheck by trigger ---------- */
.trigger-list { list-style: none; margin: 0; padding: 0; max-width: 760px; margin-inline: auto; }
.trigger-list li { display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; margin: 10px 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.trigger-list .t-num { flex: none; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--amber-s); color: var(--amber-d); font-weight: 800; font-size: 0.82rem; font-family: var(--mono); }
.trigger-list p { margin: 0; color: var(--ink-soft); font-size: 0.96rem; }
.trigger-list strong { color: var(--ink-2); }

/* ---------- stop list (archive the question) ---------- */
.stop-list { list-style: none; margin: 0; padding: 0; max-width: 760px; margin-inline: auto; }
.stop-list li { display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; margin: 10px 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.stop-list .s-num { flex: none; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--magenta-s); color: var(--magenta-d); font-weight: 800; font-size: 0.82rem; font-family: var(--mono); }
.stop-list p { margin: 0; color: var(--ink-soft); font-size: 0.96rem; }
.stop-list strong { color: var(--ink-2); }

/* ---------- guide entry cards ---------- */
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.guide-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 22px; text-decoration: none; color: var(--ink); box-shadow: var(--shadow-sm); transition: transform 0.14s ease, box-shadow 0.14s ease; }
.guide-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.guide-card .guide-num { font-family: var(--mono); font-size: 0.78rem; color: var(--cyan-d); letter-spacing: 0.1em; }
.guide-card h3 { font-family: var(--serif); font-size: 1.24rem; color: var(--ink-2); margin: 8px 0 10px; }
.guide-card p { color: var(--ink-soft); font-size: 0.95rem; margin: 0 0 16px; }
.guide-card .guide-cta { margin-top: auto; font-weight: 700; color: var(--amber-d); font-size: 0.9rem; }
@media (max-width: 900px) { .guide-grid { grid-template-columns: 1fr; } }

/* ---------- FAQ ---------- */
.faq-list { max-width: 760px; margin: 0 auto; }
details.faq-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); margin: 10px 0; box-shadow: var(--shadow-sm); overflow: hidden; }
details.faq-item summary { cursor: pointer; list-style: none; padding: 16px 20px; font-weight: 700; color: var(--ink-2); display: flex; align-items: center; justify-content: space-between; gap: 14px; }
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item summary::after { content: "+"; font-size: 1.5rem; font-weight: 400; color: var(--cyan); line-height: 1; }
details.faq-item[open] summary::after { content: "–"; }
.faq-item .faq-body { padding: 0 20px 18px; color: var(--ink-soft); font-size: 0.96rem; }
.faq-item .faq-body p { margin: 0 0 10px; }

/* ---------- final CTA ---------- */
.final-cta { background: var(--ink-2); color: #fff; border-radius: 20px; padding: 44px 40px; text-align: center; position: relative; overflow: hidden; }
.final-cta::before { content: ""; position: absolute; inset: 0; opacity: 0.35; background: radial-gradient(circle at 15% 20%, var(--cyan) 0, transparent 40%), radial-gradient(circle at 85% 80%, var(--amber) 0, transparent 40%); }
.final-cta h2 { font-family: var(--serif); font-size: clamp(1.5rem, 3.2vw, 2.1rem); margin: 0 0 12px; position: relative; }
.final-cta p { color: rgba(255,255,255,0.82); max-width: 30em; margin: 0 auto 24px; position: relative; }
.final-cta .btn-primary { position: relative; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--cream-2); padding: 44px 0 30px; margin-top: 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 30px; }
.footer-brand p { color: var(--ink-soft); font-size: 0.92rem; max-width: 34em; }
.footer-col h4 { font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 12px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col a { color: var(--ink-soft); text-decoration: none; font-size: 0.94rem; line-height: 2.1; }
.footer-col a:hover { color: var(--cyan-d); }
.footer-bottom { margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line-soft); font-size: 0.82rem; color: var(--ink-faint); display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; }
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- article / guide pages ---------- */
.page-hero { background: radial-gradient(circle at 80% 10%, var(--cyan-s) 0, transparent 45%), var(--ink-2); color: #fff; padding: 48px 0 40px; position: relative; overflow: hidden; }
.page-hero .container { position: relative; }
.page-hero h1 { font-family: var(--serif); font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 12px 0 12px; line-height: 1.15; color: #fff; }
.page-hero p { color: rgba(255,255,255,0.82); max-width: 40em; font-size: 1.05rem; }

.article-body { max-width: 760px; margin: 0 auto; padding: 40px 22px 60px; }
.article-body h2 { font-family: var(--serif); font-size: 1.5rem; color: var(--ink-2); margin: 38px 0 12px; }
.article-body h3 { font-size: 1.12rem; color: var(--ink-2); margin: 26px 0 8px; }
.article-body p { color: var(--ink-soft); margin: 0 0 16px; }
.article-body ul, .article-body ol { color: var(--ink-soft); margin: 0 0 18px; padding-left: 22px; }
.article-body li { margin: 6px 0; }
.article-body blockquote { margin: 22px 0; padding: 16px 20px; background: var(--cream-2); border-left: 4px solid var(--cyan); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--ink-soft); font-family: var(--serif); font-size: 1.06rem; }

.back-link { display: inline-flex; align-items: center; gap: 6px; color: var(--cyan-s); font-weight: 700; text-decoration: none; font-size: 0.9rem; margin-bottom: 6px; }
.back-link:hover { text-decoration: underline; }

/* legal pages */
.legal-body { max-width: 720px; margin: 0 auto; padding: 40px 22px 60px; }
.legal-body h1 { font-family: var(--serif); color: var(--ink-2); font-size: 2rem; margin: 0 0 6px; }
.legal-body .legal-date { color: var(--ink-faint); font-size: 0.85rem; margin-bottom: 24px; }
.legal-body h2 { font-family: var(--serif); font-size: 1.25rem; color: var(--ink-2); margin: 28px 0 8px; }
.legal-body p, .legal-body li { color: var(--ink-soft); }
.legal-body ul { padding-left: 22px; }

/* 404 */
.notfound { text-align: center; padding: 70px 22px 80px; }
.notfound .big { font-family: var(--serif); font-size: clamp(4rem, 14vw, 7rem); color: var(--ink-2); margin: 0; line-height: 1; }
.notfound h1 { font-family: var(--serif); color: var(--ink-2); margin: 8px 0 12px; }
.notfound p { color: var(--ink-soft); max-width: 30em; margin: 0 auto 24px; }