:root {
  color-scheme: light;
  --paper: #fffaf0;
  --ink: #342724;
  --muted: #725748;
  --rust: #a33b21;
  --line: #ecd7bf;
  --soft: #ffead1;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 16px/1.65 "Segoe UI", Arial, sans-serif; }
a { color: var(--rust); text-underline-offset: .2em; }
a:focus-visible { outline: 3px solid #67341e; outline-offset: 4px; }
.skip-link { position: absolute; top: 12px; left: 12px; transform: translateY(-180%); z-index: 5; padding: 10px 16px; border-radius: 5px; background: var(--rust); color: white; }
.skip-link:focus { transform: none; }
.welcome-shell { max-width: 1180px; margin: 0 auto; padding: 0 48px; }
.welcome-header { min-height: 84px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--line); }
.wordmark { color: var(--ink); text-decoration: none; font: 700 20px Georgia, serif; }
.wordmark:first-letter { color: var(--rust); }
.wordmark span { margin-left: 7px; color: var(--muted); font: 400 12px "Segoe UI", Arial, sans-serif; }
.back-link { font-size: 14px; text-decoration: none; }
.welcome-hero { position: relative; display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: 34px; align-items: center; min-height: 470px; padding: 58px 0 54px; }
.hero-copy { position: relative; z-index: 1; }
.eyebrow { margin: 0 0 12px; color: var(--rust); font-size: 11px; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; }
h1, h2 { margin: 0; font-family: Georgia, "Times New Roman", serif; font-weight: 400; letter-spacing: -.035em; }
h1 { font-size: clamp(3.3rem, 6.5vw, 5.6rem); line-height: .99; }
h1 em { color: var(--rust); font-weight: 400; }
.hero-subtitle { margin-top: 9px; color: var(--rust); font-size: clamp(1.55rem, 3vw, 2.25rem); }
.intro { max-width: 43ch; margin: 24px 0 0; color: #59443a; font-size: 18px; }
.mobile-intro { display: none; }
.primary-link { display: inline-flex; align-items: center; gap: 17px; min-height: 54px; margin-top: 27px; padding: 0 23px; border-radius: 5px; background: var(--rust); color: white; font-weight: 650; text-decoration: none; box-shadow: 0 5px 0 #6f2819; transition: transform .16s ease, box-shadow .16s ease; }
.primary-link:hover { transform: translateY(2px); box-shadow: 0 3px 0 #6f2819; }
.no-account { margin: 17px 0 0; color: var(--muted); font-size: 13px; }
.earth-art { position: relative; min-height: 365px; border-radius: 48% 52% 46% 54% / 48% 44% 56% 52%; background-color: #d6e3df; background-image: linear-gradient(100deg, #152d35a8, #152d3500 65%), url("assets/earth.jpg"), radial-gradient(ellipse at 48% 48%, #70a08a 0 12%, #4d786f 13% 20%, #244b59 48%, #122e3c 70%); background-size: cover; background-position: center; box-shadow: 20px 22px 0 var(--soft); }
.earth-art::after { content: ""; position: absolute; inset: 0; border-radius: inherit; background: radial-gradient(ellipse at 70% 50%, transparent 35%, #122e3c45 100%); pointer-events: none; }
.layers { padding: 32px 0 39px; border-top: 1px solid var(--line); }
h2 { font-size: clamp(1.7rem, 3vw, 2.25rem); line-height: 1.2; }
.layer-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin: 23px 0 0; padding: 0; list-style: none; }
.layer-list li { display: flex; align-items: center; gap: 11px; min-height: 58px; padding: 11px 13px; border: 1px solid var(--line); border-radius: 7px; background: #fffdf8; font-size: 14px; font-weight: 600; }
.layer-mark { display: grid; width: 30px; height: 30px; flex: 0 0 30px; place-items: center; border-radius: 50%; background: var(--soft); color: var(--rust); }
.layer-note { margin: 13px 0 0; color: var(--muted); font-size: 12px; }
.connections { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 32px; margin: 8px 0 0; padding: 27px 30px; border-radius: 8px; background: #f7e8d4; }
.connections h2 { font-size: clamp(1.45rem, 2.5vw, 1.9rem); }
.connections p:not(.eyebrow) { max-width: 70ch; margin: 9px 0 0; color: #59443a; font-size: 14px; }
.connection-links { display: grid; gap: 8px; min-width: 215px; }
.connection-links a { font-size: 14px; font-weight: 650; }
.welcome-footer { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 28px 0 32px; color: var(--muted); font-size: 12px; }
.welcome-footer p { margin: 0; }
.welcome-footer > a { flex: 0 0 auto; font-size: 13px; }
@media (max-width: 760px) {
  .welcome-shell { padding-inline: 25px; }
  .welcome-hero { grid-template-columns: 1fr; gap: 28px; min-height: 0; padding-block: 43px 38px; }
  .earth-art { grid-row: 1; min-height: 250px; width: min(100%, 530px); justify-self: center; box-shadow: 12px 13px 0 var(--soft); }
  h1 { font-size: clamp(3rem, 12vw, 4.6rem); }
  .hero-subtitle { margin-top: 8px; font-size: 1.7rem; }
  .intro { display: none; }
  .mobile-intro { display: block; margin: 19px 0 0; color: #59443a; font-size: 17px; }
  .primary-link { margin-top: 21px; }
  .layer-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .connections { grid-template-columns: 1fr; gap: 18px; padding: 23px; }
  .connection-links { min-width: 0; }
}
@media (max-width: 480px) {
  .welcome-shell { padding-inline: 19px; }
  .welcome-header { min-height: 72px; }
  .back-link { max-width: 120px; text-align: right; font-size: 12px; }
  .earth-art { min-height: 205px; }
  .layer-list { gap: 8px; }
  .layer-list li { gap: 8px; padding: 9px; font-size: 13px; }
  .welcome-footer { align-items: flex-start; flex-direction: column; gap: 10px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition-duration: .01ms !important; } }