:root {
  --paper: #ece5d8;
  --paper-light: #f8f4eb;
  --ink: #1b211f;
  --brick: #cb452f;
  --teal: #36848e;
  --mustard: #deaa44;
  --rule: #aaa497;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Arial, Helvetica, sans-serif; line-height: 1.55; }
a { color: inherit; }
.skip-link { position: absolute; left: -999px; top: 0; padding: .8rem 1rem; background: var(--ink); color: #fff; z-index: 10; }
.skip-link:focus { left: 1rem; top: 1rem; }
.topbar { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0 clamp(1rem, 5vw, 5rem); border-bottom: 1px solid var(--ink); font-size: .8rem; text-transform: uppercase; font-weight: 700; }
.topbar a { text-decoration: none; }
.topbar p { margin: 0; }

.opening { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(260px, .75fr); gap: clamp(2rem, 7vw, 8rem); align-items: end; padding: clamp(4rem, 10vw, 9rem) clamp(1.2rem, 7vw, 7.5rem) clamp(3rem, 7vw, 6rem); }
.eyebrow { margin: 0 0 1rem; color: var(--brick); font-size: .76rem; line-height: 1.2; font-weight: 800; text-transform: uppercase; }
h1, h2, h3 { margin: 0; font-family: Georgia, 'Times New Roman', serif; font-weight: 400; line-height: .94; letter-spacing: 0; }
h1 { max-width: 900px; font-size: clamp(4rem, 9vw, 9rem); }
.lead { max-width: 590px; margin: 0; font-size: clamp(1.1rem, 1.6vw, 1.45rem); line-height: 1.55; }

.time-plate { margin: 0; padding: clamp(1rem, 3vw, 3rem) clamp(1rem, 5vw, 5rem); background: var(--ink); color: #fff; }
.time-plate img { display: block; width: 100%; height: auto; max-height: 76vh; object-fit: contain; }
.time-plate figcaption { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 1rem; font-size: .72rem; text-transform: uppercase; }
.time-plate figcaption span { display: flex; gap: .75rem; align-items: center; }
.time-plate figcaption b { display: inline-grid; width: 2rem; height: 2rem; place-items: center; border: 1px solid rgba(255,255,255,.55); border-radius: 50%; color: var(--mustard); }

.three-lines, .boundaries, .continuity { padding: clamp(4rem, 9vw, 8rem) clamp(1.2rem, 7vw, 7.5rem); }
.section-head { display: grid; grid-template-columns: 72px minmax(0, 850px); gap: 1.5rem; align-items: start; margin-bottom: 3rem; }
.number { margin: 0; color: var(--brick); font-weight: 800; }
h2 { max-width: 900px; font-size: clamp(2.6rem, 5.6vw, 5.8rem); }
.line-grid { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--ink); }
.line-grid article { min-height: 310px; padding: clamp(1.5rem, 3vw, 3rem); border-right: 1px solid var(--ink); }
.line-grid article:last-child { border-right: 0; }
.line-grid article > span { display: block; margin-bottom: 4rem; color: var(--brick); font-weight: 800; }
h3 { font-size: clamp(1.8rem, 3vw, 3.2rem); }
.line-grid p { max-width: 38rem; margin: 1.25rem 0 0; }

.example { display: grid; grid-template-columns: minmax(250px, .8fr) minmax(0, 1.2fr); gap: clamp(2rem, 7vw, 7rem); padding: clamp(4rem, 8vw, 7rem) clamp(1.2rem, 7vw, 7.5rem); background: var(--mustard); }
.example h2 { font-size: clamp(2.5rem, 5vw, 5rem); }
.example-body > p { max-width: 760px; margin: 2rem 0 0; font-size: 1.08rem; }
.messages { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 1rem; }
.messages p { min-width: 190px; margin: 0; padding: 1rem; border: 2px solid var(--ink); background: var(--paper-light); }
.messages time, .messages span { display: block; }
.messages time { font-weight: 800; font-size: 1.4rem; }
.messages span { font-size: .8rem; text-transform: uppercase; }
.messages i { display: block; height: 2px; background: repeating-linear-gradient(90deg, var(--ink) 0 9px, transparent 9px 18px); }

.boundaries { background: var(--paper-light); }
.boundary-grid { display: grid; grid-template-columns: 1fr 1fr; max-width: 1200px; margin-left: auto; border: 1px solid var(--ink); }
.boundary-grid article { padding: clamp(1.5rem, 4vw, 4rem); }
.boundary-grid article + article { border-left: 1px solid var(--ink); }
.boundary-grid p { margin: 0 0 1.5rem; font-family: Georgia, 'Times New Roman', serif; font-size: 2rem; }
.boundary-grid ul { margin: 0; padding-left: 1.2rem; }
.boundary-grid li + li { margin-top: .75rem; }
.can { box-shadow: inset 8px 0 0 var(--teal); }
.cannot { box-shadow: inset 8px 0 0 var(--brick); }

.continuity { display: grid; grid-template-columns: 72px minmax(0, 900px); gap: 1.5rem; background: var(--teal); color: #fff; }
.continuity .eyebrow, .continuity .number { color: #fff; }
.continuity p:not(.eyebrow) { max-width: 760px; font-size: 1.12rem; }
.site-foot { display: flex; justify-content: space-between; gap: 1rem; padding: 2rem clamp(1.2rem, 7vw, 7.5rem); border-top: 1px solid var(--ink); font-size: .8rem; text-transform: uppercase; font-weight: 700; }
.site-foot p { margin: 0; }

@media (max-width: 800px) {
  .topbar p { display: none; }
  .opening, .example { grid-template-columns: 1fr; }
  .opening { align-items: start; }
  h1 { font-size: clamp(3.7rem, 18vw, 6rem); overflow-wrap: anywhere; }
  .time-plate { padding: 1rem; }
  .time-plate figcaption { grid-template-columns: 1fr; }
  .section-head, .continuity { grid-template-columns: 40px minmax(0, 1fr); gap: .75rem; }
  .line-grid, .boundary-grid { display: block; }
  .line-grid article { min-height: 0; border-right: 0; border-bottom: 1px solid var(--ink); }
  .line-grid article:last-child { border-bottom: 0; }
  .line-grid article > span { margin-bottom: 2rem; }
  .boundary-grid article + article { border-left: 0; border-top: 1px solid var(--ink); }
  .messages { grid-template-columns: 1fr; }
  .messages i { width: 2px; height: 46px; margin-left: 2rem; background: repeating-linear-gradient(180deg, var(--ink) 0 9px, transparent 9px 18px); }
  .site-foot { display: block; }
  .site-foot p { margin-top: .6rem; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }