:root {
  --ink: #092b38;
  --ink-soft: #284957;
  --paper: #f7f0e4;
  --paper-deep: #eee2d0;
  --white: #fffdf8;
  --coral: #ee6a5f;
  --jade: #56c8b6;
  --amber: #f3b56a;
  --line: rgba(9, 43, 56, .18);
  --shadow: 0 18px 60px rgba(5, 30, 41, .12);
  --serif: Iowan Old Style, Baskerville, Charter, Georgia, serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); font-size: 17px; line-height: 1.72; }
a { color: inherit; text-underline-offset: .18em; }
img { max-width: 100%; display: block; }
h1, h2, h3 { font-family: var(--serif); line-height: 1.05; letter-spacing: -.025em; text-wrap: balance; }
h1 { margin: 0; font-size: clamp(3rem, 7vw, 6.8rem); }
h2 { margin: 4.5rem 0 1.2rem; font-size: clamp(2rem, 4.2vw, 3.65rem); }
h3 { margin: 0 0 .75rem; font-size: 1.55rem; }
p { margin: 0 0 1.35rem; }
blockquote { margin: 2rem 0; padding: 1.35rem 1.5rem; border-left: 5px solid var(--coral); background: var(--white); font-family: var(--serif); font-size: 1.35rem; box-shadow: var(--shadow); }

.xad-skip { position: fixed; z-index: 100; left: 1rem; top: -4rem; padding: .7rem 1rem; background: var(--white); border: 2px solid var(--ink); }
.xad-skip:focus { top: 1rem; }
.xad-header { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: .9rem max(4vw, 1.1rem); background: var(--ink); color: var(--white); border-bottom: 1px solid rgba(255,255,255,.12); }
.xad-brand { display: flex; align-items: center; gap: .85rem; text-decoration: none; line-height: 1.15; }
.xad-brand-mark { display: grid; place-items: center; width: 44px; height: 44px; color: var(--ink); background: var(--amber); border-radius: 50% 50% 42% 58%; font-family: var(--serif); font-weight: 700; }
.xad-brand b { display: block; font-family: var(--serif); font-size: 1.17rem; }
.xad-brand small { display: block; margin-top: .22rem; color: rgba(255,255,255,.62); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; }
.xad-nav { display: flex; align-items: center; gap: clamp(.8rem, 2vw, 1.8rem); font-size: .85rem; font-weight: 700; }
.xad-nav a { color: rgba(255,255,255,.72); text-decoration: none; }
.xad-nav a:hover, .xad-nav a[aria-current="page"] { color: var(--amber); }

.xad-hero { position: relative; min-height: min(78vh, 790px); display: grid; align-items: center; overflow: hidden; background: var(--ink); color: var(--white); }
.xad-hero picture, .xad-hero picture img, .xad-hero-shade { position: absolute; inset: 0; width: 100%; height: 100%; }
.xad-hero picture img { object-fit: cover; object-position: center; }
.xad-hero-shade { background: linear-gradient(90deg, rgba(4,28,40,.98) 0%, rgba(4,28,40,.88) 32%, rgba(4,28,40,.35) 62%, rgba(4,28,40,.08) 100%); }
.xad-hero-copy { position: relative; z-index: 2; width: min(800px, 92vw); padding: clamp(5rem, 11vw, 9rem) max(4vw, 1.1rem); }
.xad-hero-copy > p { margin-bottom: 1rem; color: var(--jade); font-size: .78rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.xad-hero h1 { max-width: 760px; }
.xad-dek { max-width: 760px; margin-top: 1.35rem; color: var(--ink-soft); font-family: var(--serif); font-size: clamp(1.15rem, 2.2vw, 1.55rem); line-height: 1.45; }
.xad-hero .xad-dek { color: rgba(255,255,255,.82); }
.xad-button { display: inline-flex; align-items: center; justify-content: center; margin-top: 1.3rem; padding: .8rem 1.2rem; color: var(--ink); background: var(--amber); border-radius: 999px; font-size: .84rem; font-weight: 800; text-decoration: none; box-shadow: 0 10px 30px rgba(0,0,0,.15); }
.xad-button:hover { background: var(--jade); }

.xad-main { width: min(850px, calc(100% - 2.2rem)); margin: 0 auto; padding: 4.8rem 0 6rem; }
.xad-main-home { width: min(1180px, calc(100% - 2.2rem)); }
.xad-main > :first-child { margin-top: 0; }
.xad-masthead { padding: clamp(4rem, 9vw, 8rem) max(4vw, 1.1rem) clamp(3rem, 6vw, 5rem); color: var(--white); background: linear-gradient(135deg, var(--ink), #0e4553); border-bottom: 10px solid var(--jade); }
.xad-masthead h1 { max-width: 1200px; font-size: clamp(2.9rem, 6.5vw, 6.4rem); }
.xad-masthead .xad-dek { color: rgba(255,255,255,.75); }
.xad-eyebrow, .xad-kicker { margin: 0 0 .8rem; color: var(--coral); font-size: .75rem; font-weight: 850; letter-spacing: .15em; text-transform: uppercase; }
.xad-masthead .xad-eyebrow { color: var(--amber); }
.xad-breadcrumb { display: flex; gap: .55rem; margin-bottom: clamp(2.4rem, 5vw, 5rem); color: rgba(255,255,255,.55); font-size: .74rem; text-transform: uppercase; letter-spacing: .08em; }
.xad-breadcrumb a { color: var(--jade); }
.xad-byline { margin: 1.4rem 0 0; color: rgba(255,255,255,.55); font-size: .78rem; }

.xad-lead-grid, .xad-split { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(280px, .75fr); gap: clamp(2rem, 6vw, 6rem); align-items: start; padding: 1rem 0 4rem; }
.xad-lead-grid h2, .xad-split h2 { margin-top: 0; }
.xad-note { padding: 1.6rem; background: var(--ink); color: var(--white); border-radius: 4px 38px 4px 4px; box-shadow: var(--shadow); }
.xad-note-label { display: block; margin-bottom: 1rem; color: var(--amber); font-size: .74rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.xad-note ol { margin: 0; padding-left: 1.2rem; }
.xad-note li + li { margin-top: .8rem; }

.xad-card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin: 1.8rem 0 5rem; }
.xad-card-grid-2 { grid-template-columns: repeat(2, 1fr); }
.xad-card, .xad-card-static { min-height: 260px; display: flex; flex-direction: column; padding: 1.35rem; background: var(--white); border: 1px solid var(--line); border-top: 5px solid var(--coral); text-decoration: none; box-shadow: 0 8px 35px rgba(9,43,56,.06); }
.xad-card:nth-child(2n), .xad-card-static:nth-child(2n) { border-top-color: var(--jade); }
.xad-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.xad-card-index { margin-bottom: auto; color: var(--coral); font-family: var(--serif); font-size: 2.2rem; }
.xad-card p, .xad-card-static p { margin: 0; color: var(--ink-soft); font-size: .92rem; }

.xad-source-box { margin: 2rem 0; padding: clamp(1.5rem, 4vw, 3rem); background: var(--paper-deep); border-left: 10px solid var(--amber); }
.xad-source-box h2 { margin-top: 0; }
.xad-source-links { display: flex; flex-wrap: wrap; gap: .65rem; }
.xad-source-links a { padding: .45rem .7rem; background: var(--white); border: 1px solid var(--line); font-size: .78rem; font-weight: 700; text-decoration: none; }

.xad-toc { display: flex; flex-wrap: wrap; gap: .5rem 1rem; margin: 0 0 2.5rem; padding: 1rem 1.2rem; background: var(--white); border: 1px solid var(--line); font-size: .8rem; }
.xad-toc strong { color: var(--coral); }
.xad-answer { margin-bottom: 3rem; padding: 1.25rem 1.5rem; background: var(--ink); color: var(--white); border-radius: 3px 28px 3px 3px; font-family: var(--serif); font-size: 1.28rem; line-height: 1.5; }
.xad-table-wrap { margin: 1.8rem calc(50% - 50vw); padding: 0 max(1.1rem, calc(50vw - 425px)); overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: var(--white); box-shadow: var(--shadow); font-size: .9rem; }
th, td { padding: .85rem 1rem; border: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--white); background: var(--ink); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; }
.xad-checklist, .xad-steps, .xad-sources-list { padding-left: 1.35rem; }
.xad-checklist li, .xad-steps li, .xad-sources-list li { margin-bottom: .75rem; }
.xad-checklist li::marker { color: var(--jade); content: "✓  "; font-weight: 900; }
.xad-steps li::marker { color: var(--coral); font-family: var(--serif); font-size: 1.25rem; font-weight: 800; }
.xad-citation { margin-top: 2.5rem; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: .8rem; }
.xad-two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1.5rem 0; }
.xad-panel, .xad-contact-card { padding: 1.5rem; background: var(--white); border: 1px solid var(--line); box-shadow: var(--shadow); }
.xad-panel h3 { color: var(--coral); }
.xad-panel ul { margin-bottom: 0; padding-left: 1.2rem; }
.xad-text-link { color: var(--coral); font-weight: 800; }
.xad-contact-card { margin-bottom: 3rem; border-top: 6px solid var(--jade); }
.xad-contact-card a { font-family: var(--serif); font-size: clamp(1.25rem, 4vw, 2.2rem); }

.xad-boundary { display: grid; grid-template-columns: 180px 1fr; gap: 1.3rem; width: min(1180px, calc(100% - 2.2rem)); margin: 0 auto 4rem; padding: 1rem 1.3rem; border: 1px solid var(--line); background: var(--white); font-size: .8rem; }
.xad-boundary strong { color: var(--coral); text-transform: uppercase; letter-spacing: .08em; }
.xad-footer { display: grid; grid-template-columns: 1.2fr 1fr; gap: 2rem 4rem; padding: 3.5rem max(4vw, 1.1rem); color: rgba(255,255,255,.7); background: var(--ink); }
.xad-footer-brand { color: var(--white); font-family: var(--serif); font-size: 1.7rem; font-weight: 700; text-decoration: none; }
.xad-footer p { margin: .4rem 0 0; }
.xad-footer nav { display: flex; flex-wrap: wrap; gap: .8rem 1.4rem; justify-content: flex-end; }
.xad-footer nav a { color: var(--jade); }
.xad-footer-note { grid-column: 1 / -1; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,.12); font-size: .72rem; }

.xad-status { min-height: 100vh; display: grid; place-items: center; background: var(--ink); color: var(--white); }
.xad-status main { width: min(700px, calc(100% - 2rem)); }
.xad-status h1 { font-size: clamp(2.5rem, 8vw, 5rem); }

@media (max-width: 920px) {
  .xad-header { align-items: flex-start; flex-direction: column; gap: .8rem; }
  .xad-nav { width: 100%; flex-wrap: wrap; overflow: visible; padding-bottom: .2rem; }
  .xad-nav a { white-space: nowrap; }
  .xad-card-grid { grid-template-columns: repeat(2, 1fr); }
  .xad-lead-grid, .xad-split { grid-template-columns: 1fr; }
  .xad-split { gap: .5rem; }
  .xad-hero { min-height: 720px; align-items: end; }
  .xad-hero-copy { width: 100%; }
  .xad-hero-shade { background: linear-gradient(0deg, rgba(4,28,40,.98) 0%, rgba(4,28,40,.83) 52%, rgba(4,28,40,.15) 100%); }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  h2 { margin-top: 3.5rem; }
  .xad-brand small { display: none; }
  .xad-card-grid, .xad-card-grid-2, .xad-two-col { grid-template-columns: 1fr; }
  .xad-card, .xad-card-static { min-height: 220px; }
  .xad-masthead { border-bottom-width: 7px; }
  .xad-table-wrap { margin-inline: -1.1rem; padding: 0; }
  .xad-boundary { grid-template-columns: 1fr; }
  .xad-footer { grid-template-columns: 1fr; }
  .xad-footer nav { justify-content: flex-start; }
  .xad-footer-note { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}