:root {
  --bg: #faf9fd;
  --surface: #ffffff;
  --text: #1d1b2a;
  --muted: #5e5b70;
  --line: #e5e1f0;
  --brand-a: #667eea;
  --brand-b: #764ba2;
  --accent: #5a3fa0;
  --link: #4b3a9e;
  --ok: #1d7a4a;
  --err: #b3261e;
  --radius: 14px;
  --shadow: 0 8px 30px rgba(80, 60, 160, 0.10);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14121f;
    --surface: #1d1a2e;
    --text: #f1eefb;
    --muted: #b3aecb;
    --line: #342f4d;
    --accent: #b9a8ff;
    --link: #b9c6ff;
    --ok: #6fd6a0;
    --err: #ff9d95;
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 Georgia, "Times New Roman", serif;
  -webkit-text-size-adjust: 100%;
}
h1, h2, h3, .sans, button, input, select, label, nav {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--link); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 3px solid var(--brand-a);
  outline-offset: 2px;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }

/* top bar */
.top { padding: 18px 0; }
.top .wrap { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.brand { font-weight: 800; letter-spacing: -0.01em; text-decoration: none; color: var(--text); font-size: 1.05rem; }
.brand span { background: linear-gradient(90deg, var(--brand-a), var(--brand-b)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.top a.link { font: 600 0.95rem/1 -apple-system, "Segoe UI", Arial, sans-serif; text-decoration: none; }

/* hero */
.hero {
  background: linear-gradient(135deg, var(--brand-a), var(--brand-b));
  color: #fff;
  border-radius: 0 0 28px 28px;
  padding: 40px 0 56px;
}
.hero .eyebrow { font: 700 0.78rem/1 -apple-system, "Segoe UI", Arial, sans-serif; letter-spacing: 0.14em; text-transform: uppercase; opacity: 0.9; margin: 0 0 14px; }
.hero h1 { font-size: clamp(1.9rem, 5.2vw, 2.7rem); line-height: 1.15; margin: 0 0 14px; letter-spacing: -0.02em; }
.hero p.lede { font-size: 1.1rem; margin: 0 0 26px; max-width: 34em; opacity: 0.96; }

/* signup card */
.card {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
}
.signup h2 { font-size: 1.15rem; margin: 0 0 4px; }
.signup p.small { margin: 0 0 14px; color: var(--muted); font-size: 0.92rem; }
.row { display: grid; gap: 12px; grid-template-columns: 1fr; }
@media (min-width: 600px) { .row.two { grid-template-columns: 1fr 1fr; } }
label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 4px; }
input[type=text], input[type=email], select {
  width: 100%;
  font: 1rem/1.3 -apple-system, "Segoe UI", Arial, sans-serif;
  padding: 12px 13px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
}
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
button.cta {
  margin-top: 14px;
  width: 100%;
  font: 700 1rem/1 -apple-system, "Segoe UI", Arial, sans-serif;
  padding: 14px 18px;
  border: 0;
  border-radius: 10px;
  color: #fff;
  background: linear-gradient(135deg, var(--brand-a), var(--brand-b));
  cursor: pointer;
}
button.cta:hover { filter: brightness(1.06); }
button.cta[disabled] { opacity: 0.6; cursor: not-allowed; }
.status { min-height: 1.4em; margin: 12px 0 0; font: 600 0.95rem/1.4 -apple-system, "Segoe UI", Arial, sans-serif; }
.status.ok { color: var(--ok); }
.status.err { color: var(--err); }

/* sections */
section { padding: 44px 0 0; }
section h2 { font-size: 1.5rem; letter-spacing: -0.01em; margin: 0 0 14px; }
.grid3 { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 700px) { .grid3 { grid-template-columns: repeat(3, 1fr); } }
.grid3 .card { box-shadow: none; }
.grid3 h3 { margin: 0 0 6px; font-size: 1.02rem; color: var(--accent); }
.grid3 p { margin: 0; font-size: 0.97rem; color: var(--muted); }

.latest .tag { font: 700 0.75rem/1 -apple-system, "Segoe UI", Arial, sans-serif; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); margin: 0 0 8px; }
.latest h3 { font-size: 1.35rem; line-height: 1.25; margin: 0 0 10px; }
.latest ul { margin: 0 0 16px; padding-left: 1.2em; color: var(--muted); }
.latest .readbtn {
  display: inline-block; font: 700 0.98rem/1 -apple-system, "Segoe UI", Arial, sans-serif;
  padding: 12px 18px; border-radius: 10px; text-decoration: none; color: #fff;
  background: linear-gradient(135deg, var(--brand-a), var(--brand-b));
}

.about p { margin: 0 0 10px; }
footer { padding: 44px 0 56px; color: var(--muted); font: 0.9rem/1.5 -apple-system, "Segoe UI", Arial, sans-serif; }
footer .wrap { border-top: 1px solid var(--line); padding-top: 20px; }

/* issue page */
.issue { padding: 12px 0 0; }
.issue .meta { font: 700 0.78rem/1 -apple-system, "Segoe UI", Arial, sans-serif; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin: 28px 0 10px; }
.issue h1 { font-size: clamp(1.8rem, 5vw, 2.4rem); line-height: 1.18; letter-spacing: -0.02em; margin: 0 0 18px; }
.issue h2 { font-size: 1.25rem; color: var(--accent); margin: 34px 0 8px; }
.issue p, .issue li { margin: 0 0 12px; }
.issue ul { padding-left: 1.25em; margin: 0 0 12px; }
.issue .callout { background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--brand-a); border-radius: 10px; padding: 12px 16px; margin: 0 0 14px; }
.issue .callout p { margin: 0; }
.cta-box { margin-top: 40px; }
.back { display: inline-block; margin-top: 8px; font: 600 0.95rem/1 -apple-system, "Segoe UI", Arial, sans-serif; text-decoration: none; }