:root {
  --bg: #0b261e;
  --bg-deep: #071b16;
  --panel: #103227;
  --ivory: #efe7d7;
  --muted: #b8c8bb;
  --line: rgba(239, 231, 215, .16);
  --coral: #e5846f;
  --coral-soft: rgba(229, 132, 111, .13);
  --green-light: #86aa91;
  --frame: 1140px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ivory);
  background:
    radial-gradient(circle at 10% 0%, rgba(57, 119, 87, .24), transparent 35rem),
    linear-gradient(180deg, #0e2d23 0%, var(--bg) 45%, #071b16 100%);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  overflow-wrap: anywhere;
}
body::before { content:""; position:fixed; inset:0; pointer-events:none; opacity:.035; background-image:radial-gradient(#fff 0.7px, transparent 0.7px); background-size:7px 7px; }
a { color: var(--ivory); text-decoration-color: var(--coral); text-underline-offset: .22em; }
a:hover { color: #fff; }
a:focus-visible { outline: 3px solid var(--coral); outline-offset: 4px; border-radius: 3px; }
.frame { width: min(calc(100% - 40px), var(--frame)); margin-inline: auto; }
.skip-link { position:absolute; top:-80px; left:12px; z-index:100; padding:10px 14px; background:var(--ivory); color:#072019; font-weight:800; }
.skip-link:focus { top:12px; }

.topbar { border-bottom:1px solid var(--line); background:rgba(7,27,22,.78); }
.topbar-inner { display:flex; justify-content:space-between; align-items:center; gap:24px; padding-block:18px; }
.logo { font-weight:800; text-decoration:none; letter-spacing:-.02em; }
.topbar nav { display:flex; flex-wrap:wrap; gap:16px; font-size:.9rem; }
.topbar nav a { color:var(--muted); text-decoration:none; }
.topbar nav a:hover { color:var(--ivory); }

.hero { display:grid; grid-template-columns:minmax(0,1.45fr) minmax(250px,.55fr); gap:clamp(42px,8vw,112px); align-items:end; padding-block:clamp(78px,12vw,145px); }
.label, .small-label { margin:0 0 10px; color:var(--coral); font-size:.76rem; font-weight:800; letter-spacing:.12em; text-transform:uppercase; }
h1,h2,h3 { line-height:1.06; letter-spacing:-.035em; }
h1 { max-width:12ch; margin:0; font-size:clamp(3.1rem,8vw,6.8rem); }
h2 { margin:0; font-size:clamp(2.1rem,4.7vw,3.9rem); }
h3 { font-size:1.25rem; }
.lead { max-width:64ch; margin-top:30px; color:#cfdbd1; font-size:clamp(1.08rem,2vw,1.34rem); }
.byline { margin-top:26px; color:var(--muted); }
.hero-card { padding:24px; border:1px solid var(--line); background:rgba(16,50,39,.66); }
.hero-card p { margin:0; padding:9px 0; border-bottom:1px solid var(--line); color:var(--muted); }
.hero-card p:last-child { border-bottom:0; }
.hero-card .card-title { color:var(--ivory); font-weight:800; }

.section { padding-block:clamp(66px,9vw,110px); border-top:1px solid var(--line); }
.section-head { max-width:790px; margin-bottom:44px; }
.section-head > p:last-child { color:var(--muted); }
.copy-grid { display:grid; grid-template-columns:minmax(0,1.4fr) minmax(250px,.6fr); gap:64px; align-items:start; }
.copy { max-width:72ch; }
.copy p:first-child { margin-top:0; }
.conditions { padding:20px 0 20px 24px; border-left:2px solid var(--coral); }
.conditions ul { margin:10px 0 0; padding-left:18px; color:var(--muted); }
.conditions li { margin:5px 0; }
.process { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:1px; margin-top:52px; background:var(--line); border:1px solid var(--line); }
.process article { min-height:220px; padding:26px; background:var(--bg); }
.process span { color:var(--coral); font:700 .8rem ui-monospace,SFMono-Regular,Menlo,monospace; }
.process h3 { margin:28px 0 9px; }
.process p { margin:0; color:var(--muted); }

.example { background:rgba(5,20,15,.26); }
.change-record { display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.wording { padding:clamp(24px,4vw,40px); border:1px solid var(--line); background:rgba(16,50,39,.64); }
.wording.old { opacity:.72; }
.wording p:last-child { margin:0; font-size:clamp(1.05rem,2vw,1.3rem); line-height:1.5; }
.why-change { max-width:76ch; margin:24px 0 54px; color:var(--muted); }
.timeline { position:relative; max-width:900px; margin-left:14px; }
.timeline::before { content:""; position:absolute; left:21px; top:12px; bottom:12px; width:1px; background:linear-gradient(var(--coral),rgba(229,132,111,.18)); }
.timeline article { position:relative; display:grid; grid-template-columns:44px minmax(0,1fr); gap:24px; padding:0 0 44px; }
.timeline-marker { position:relative; z-index:1; width:44px; height:44px; display:grid; place-items:center; border:1px solid var(--coral); border-radius:50%; background:var(--bg-deep); color:var(--coral); font-weight:800; }
.timeline-date { margin:0 0 7px; color:var(--coral); font:700 .78rem ui-monospace,SFMono-Regular,Menlo,monospace; text-transform:uppercase; letter-spacing:.07em; }
.timeline h3 { margin:0 0 8px; }
.timeline p:last-child { max-width:72ch; margin:0; color:var(--muted); }

.uncertainty-grid { display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.uncertainty-grid article { padding:26px; border-top:2px solid var(--coral); background:rgba(16,50,39,.54); }
.uncertainty-grid h3 { margin-top:0; }
.uncertainty-grid p { margin-bottom:0; color:var(--muted); }
.tracking-note { max-width:78ch; margin:34px 0 0; }

.takeaway { display:grid; grid-template-columns:minmax(0,1fr) 230px; gap:42px; align-items:end; padding-block:clamp(60px,9vw,100px); border-top:1px solid var(--line); }
.takeaway > div:first-child { max-width:700px; }
.takeaway p:not(.label) { color:var(--muted); }
.actions { display:grid; gap:12px; justify-items:start; }
.button { display:inline-block; padding:12px 17px; border:1px solid var(--coral); background:var(--coral-soft); text-decoration:none; font-weight:800; }

.resources { background:#061a14; }
.affiliation { max-width:72ch; margin:-14px 0 44px; color:var(--muted); }
.resource-grid { display:grid; grid-template-columns:1fr 1fr; gap:54px; }
.resource-grid h3 { margin-top:0; }
.resource-grid ul { list-style:none; padding:0; margin:0; border-top:1px solid var(--line); }
.resource-grid li { padding:15px 0; border-bottom:1px solid var(--line); color:var(--muted); }
.resource-grid a { font-weight:750; }
.resource-grid .paper { white-space:nowrap; color:#cedbce; font-size:.9em; }
.author { display:grid; grid-template-columns:70px minmax(0,700px); gap:30px; }
.author-accent { width:48px; height:48px; margin-top:14px; border-left:4px solid var(--coral); border-bottom:4px solid var(--coral); }
.author p { color:var(--muted); }
.author h2 { font-size:clamp(2.1rem,4vw,3.4rem); }
.footer { border-top:1px solid var(--line); color:var(--muted); font-size:.86rem; }
.footer-inner { display:flex; justify-content:space-between; gap:24px; padding-block:20px; }
.footer p { margin:0; max-width:760px; }

/* Worksheet */
.worksheet { max-width:900px; padding-block:70px; }
.worksheet h1 { max-width:15ch; font-size:clamp(2.8rem,7vw,5.2rem); }
.worksheet-intro { max-width:68ch; color:var(--muted); }
.fields { margin-top:46px; padding:28px; border:1px solid var(--line); background:rgba(16,50,39,.58); }
.field { margin-top:20px; }
.field:first-child { margin-top:0; }
.field > span { display:block; margin-bottom:8px; color:var(--coral); font-size:.72rem; font-weight:800; letter-spacing:.09em; text-transform:uppercase; }
.blank { min-height:70px; border-bottom:1px solid var(--line); background:repeating-linear-gradient(to bottom,transparent 0 30px,rgba(239,231,215,.08) 31px); }
.blank.short { min-height:38px; }
.blank.medium { min-height:64px; }
.blank.tall { min-height:96px; }
.blank.extra { min-height:150px; }
.field-pair { display:grid; grid-template-columns:1fr 1fr; gap:22px; }
.print-credit { margin-top:54px; padding-top:16px; border-top:1px solid var(--line); color:var(--muted); font-size:.8rem; }
.missing { min-height:100vh; display:grid; align-content:center; justify-items:start; padding-block:80px; }
.missing h1 { max-width:13ch; font-size:clamp(2.8rem,7vw,5.7rem); }
.missing p:not(.label) { color:var(--muted); }

@media (max-width:800px) {
  .frame { width:min(calc(100% - 28px),var(--frame)); }
  .topbar-inner,.footer-inner { align-items:flex-start; flex-direction:column; }
  .hero,.copy-grid,.change-record,.resource-grid,.takeaway,.author { grid-template-columns:1fr; }
  .process { grid-template-columns:1fr 1fr; }
  .uncertainty-grid { grid-template-columns:1fr; }
}
@media (max-width:520px) {
  .process { grid-template-columns:1fr; }
  .field-pair { grid-template-columns:1fr; }
  .timeline { margin-left:0; }
  .timeline article { grid-template-columns:38px minmax(0,1fr); gap:16px; }
  .timeline-marker { width:38px; height:38px; }
  .timeline::before { left:18px; }
}
@media (max-width:390px) {
  body { font-size:.96rem; }
  h1 { font-size:clamp(2.8rem,15vw,4.2rem); }
  .topbar nav { font-size:.84rem; gap:10px 13px; }
  .process article,.wording,.uncertainty-grid article,.fields { padding:20px; }
}
@media (prefers-reduced-motion:reduce) { html { scroll-behavior:auto; } }
@media print {
  body,body::before { background:#fff !important; color:#111; }
  body::before,.no-print,.skip-link { display:none !important; }
  .worksheet { width:100%; max-width:none; padding:0; }
  .worksheet h1 { max-width:none; font-size:28pt; }
  .worksheet-intro { color:#333; }
  .fields { padding:14px; background:#fff; border-color:#999; }
  .field > span { color:#8a3f31; }
  .field,.field-pair { break-inside:avoid; page-break-inside:avoid; }
  .label, .small-label { color:#444; }
  .blank { border-color:#999; background:none; }
  .field-pair { grid-template-columns:1fr 1fr; }
  .print-credit { color:#444; border-color:#aaa; }
  a { color:#111; text-decoration:none; }
}