:root {
  --paper: #f5f0e5;
  --paper-2: #ebe4d4;
  --ink: #15233a;
  --ink-soft: #3d4a5e;
  --rule: #d6ccb6;
  --accent: #c2471d;
  --accent-bright: #e2572b;
  --deep: #14263d;
  --deep-ink: #f5f0e5;
  --card: #fbf8f1;
  --serif-display: "Fraunces", Georgia, "Times New Roman", serif;
  --serif-text: "Literata", Georgia, "Times New Roman", serif;
  --wrap: 1120px;
  --narrow: 700px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0f1a29;
    --paper-2: #16243a;
    --ink: #ece6d8;
    --ink-soft: #b9b4a8;
    --rule: #2b3a52;
    --accent: #f08a5d;
    --accent-bright: #f2734a;
    --deep: #0a1320;
    --deep-ink: #ece6d8;
    --card: #142236;
  }
}
:root[data-theme="dark"] {
  --paper: #0f1a29; --paper-2: #16243a; --ink: #ece6d8; --ink-soft: #b9b4a8; --rule: #2b3a52;
  --accent: #f08a5d; --accent-bright: #f2734a; --deep: #0a1320; --deep-ink: #ece6d8; --card: #142236;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif-text);
  font-size: 1.1875rem; /* 19px: comfortable for every age */
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; }
a { color: var(--accent); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent-bright); outline-offset: 3px; border-radius: 3px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.wrap-narrow { max-width: var(--narrow); margin-left: auto; margin-right: auto; padding-left: 20px; padding-right: 20px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.hidden { display: none; }

h1, h2, h3 { font-family: var(--serif-display); font-weight: 650; line-height: 1.15; letter-spacing: -0.01em; color: var(--ink); }
.eyebrow {
  font-family: var(--serif-text); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent); margin: 0 0 0.9rem;
}
.eyebrow a { color: inherit; text-decoration: none; }

/* header */
.site-head { border-bottom: 1px solid var(--rule); background: var(--paper); }
.head-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; flex-wrap: wrap; padding-top: 10px; padding-bottom: 10px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-family: var(--serif-display); font-weight: 650; font-size: 1.15rem; }
.brand em { font-style: italic; font-weight: 500; color: var(--accent); }
.mark { width: 30px; height: 30px; color: var(--ink); flex: none; }
nav { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
nav a { color: var(--ink); text-decoration: none; font-size: 0.95rem; padding: 8px 12px; border-radius: 999px; }
nav a:hover { background: var(--paper-2); }
nav .nav-cta { border: 1.5px solid var(--ink); }

/* buttons */
.btn {
  display: inline-block; background: var(--ink); color: var(--paper); text-decoration: none;
  padding: 13px 22px; border-radius: 999px; font-weight: 600; font-size: 1rem; border: 1.5px solid var(--ink);
}
.btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--paper-2); color: var(--ink); border-color: var(--ink); }

/* hero */
.hero { padding: 72px 0 64px; border-bottom: 1px solid var(--rule); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(2.2rem, 5.2vw, 3.7rem); margin: 0 0 1.4rem; max-width: 16ch; }
.lede { font-size: 1.2rem; color: var(--ink-soft); max-width: 36em; margin: 0 0 1.8rem; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 0; }
.watch {
  background: var(--deep); color: var(--deep-ink); border-radius: 18px; padding: 28px 28px 22px;
  position: relative; overflow: hidden;
}
.watch::after { /* chart-grid texture */
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0.08;
  background-image: linear-gradient(currentColor 1px, transparent 1px), linear-gradient(90deg, currentColor 1px, transparent 1px);
  background-size: 28px 28px;
}
.watch-title { font-family: var(--serif-display); font-size: 1.35rem; margin: 0 0 0.6rem; font-weight: 650; }
.watch ol { margin: 0; padding-left: 1.3em; position: relative; z-index: 1; }
.watch li { margin: 0 0 0.85rem; font-size: 1.02rem; line-height: 1.5; }
.watch li::marker { color: var(--accent-bright); font-weight: 600; }
.watch strong { color: #fff; }

/* article cards */
.articles { padding: 64px 0 56px; }
.articles h2 { font-size: clamp(1.8rem, 3.5vw, 2.4rem); margin: 0 0 1.6rem; }
.cards { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card a {
  display: flex; flex-direction: column; height: 100%; background: var(--card); border: 1px solid var(--rule);
  border-radius: 14px; padding: 24px; text-decoration: none; color: var(--ink); transition: transform .15s ease, border-color .15s ease;
}
.card a:hover { transform: translateY(-2px); border-color: var(--ink); }
.card h3 { font-size: 1.3rem; margin: 0 0 0.6rem; }
.card p { margin: 0 0 1.2rem; color: var(--ink-soft); font-size: 1rem; line-height: 1.55; }
.card .more { margin-top: auto; color: var(--accent); font-weight: 600; font-size: 0.95rem; }
.card:first-child { grid-column: span 2; }
.card:first-child a { background: var(--paper-2); }
.card:first-child h3 { font-size: 1.7rem; }
.card:last-child:nth-child(3n) { grid-column: 1 / -1; }

/* why */
.why { padding: 60px 0 68px; border-top: 1px solid var(--rule); }
.why-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: 48px; }
.why h2 { font-size: clamp(1.7rem, 3.2vw, 2.3rem); margin: 0; }
.why-points { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.why h3 { font-size: 1.15rem; margin: 0 0 0.5rem; padding-top: 14px; border-top: 3px solid var(--accent-bright); }
.why p { margin: 0; color: var(--ink-soft); font-size: 1rem; line-height: 1.6; }

/* article */
.article { padding: 56px 0 40px; }
.article-head h1 { font-size: clamp(2rem, 5vw, 3rem); margin: 0 0 1rem; }
.dek { font-size: 1.25rem; color: var(--ink-soft); margin: 0 0 1.2rem; line-height: 1.5; }
.byline { font-size: 0.95rem; color: var(--ink-soft); margin: 0; padding-bottom: 28px; border-bottom: 1px solid var(--rule); }
.prose { padding-top: 12px; }
.prose h2 { font-size: 1.75rem; margin: 2.4rem 0 0.8rem; }
.prose h3 { font-size: 1.35rem; margin: 2rem 0 0.6rem; }
.prose h4 { font-size: 1.1rem; margin: 1.6rem 0 0.5rem; font-family: var(--serif-text); }
.prose p, .prose ul, .prose ol { margin: 0 0 1.15rem; }
.prose li { margin: 0 0 0.45rem; }
.prose blockquote { margin: 1.6rem 0; padding: 4px 0 4px 20px; border-left: 3px solid var(--accent-bright); color: var(--ink-soft); font-style: italic; }
.prose table { width: 100%; border-collapse: collapse; margin: 1.6rem 0; font-size: 0.95rem; display: block; overflow-x: auto; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
.prose th { background: var(--paper-2); font-weight: 600; }
.signoff { font-style: italic; }

/* plain pages (404, thanks) */
.plain { padding: 90px 20px 80px; }
.plain h1 { font-size: clamp(2rem, 5vw, 3rem); margin: 0 0 1rem; }

/* signup */
.signup { background: var(--deep); color: var(--deep-ink); padding: 48px 0; margin-top: 24px; }
.signup-inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px; align-items: center; }
.signup h2 { color: var(--deep-ink); font-size: clamp(1.5rem, 3vw, 2rem); margin: 0 0 0.4rem; }
.signup p { margin: 0; opacity: 0.85; }
.signup-form { display: flex; gap: 10px; flex-wrap: wrap; }
.signup-form input[type=email] {
  flex: 1 1 220px; min-width: 0; font: inherit; font-size: 1rem; padding: 13px 16px; border-radius: 999px;
  border: 1.5px solid rgba(255,255,255,0.35); background: rgba(255,255,255,0.06); color: var(--deep-ink);
}
.signup-form input::placeholder { color: rgba(236,230,216,0.6); }
.signup-form button {
  font: inherit; font-size: 1rem; font-weight: 600; padding: 13px 22px; border-radius: 999px; border: 0;
  background: var(--accent-bright); color: #fff; cursor: pointer;
}
.signup-form button:hover { filter: brightness(1.08); }

/* footer */
.site-foot { padding: 28px 0 40px; font-size: 0.92rem; color: var(--ink-soft); }
.foot-row { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.foot-row p { margin: 0; }
.site-foot a { color: var(--ink-soft); }

/* responsive */
@media (max-width: 900px) {
  .hero { padding: 48px 0 44px; }
  .hero-grid, .why-grid, .signup-inner { grid-template-columns: 1fr; gap: 32px; }
  .cards { grid-template-columns: 1fr 1fr; }
  .card:last-child:nth-child(3n) { grid-column: auto; }
  .why-points { grid-template-columns: 1fr; gap: 22px; }
}
@media (max-width: 620px) {
  body { font-size: 1.125rem; }
  .wrap, .wrap-narrow { padding-left: 16px; padding-right: 16px; }
  .cards { grid-template-columns: 1fr; }
  .card:first-child { grid-column: auto; }
  .card:first-child h3 { font-size: 1.4rem; }
  .head-row { justify-content: center; }
  nav a { padding: 6px 10px; }
  .article { padding-top: 36px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }