:root {
  --bg: #0b1220;
  --bg-2: #121a2b;
  --card: #162033;
  --text: #f4f7fb;
  --muted: #b7c2d6;
  --line: #2a3a55;
  --accent: #7dd3fc;
  --accent-2: #38bdf8;
  --ok: #86efac;
  --warn: #fde68a;
  --focus: #f8fafc;
  --max: 68rem;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  background: radial-gradient(1200px 600px at 10% -10%, #1d4ed8 0%, transparent 45%),
              radial-gradient(900px 500px at 100% 0%, #0ea5e9 0%, transparent 40%),
              var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: var(--accent); }
a:hover { color: var(--accent-2); }
.skip {
  position: absolute; left: -999px; top: 0;
  background: #000; color: #fff; padding: .5rem 1rem;
}
.skip:focus { left: 1rem; top: 1rem; z-index: 10; }
.wrap { width: min(var(--max), calc(100% - 2rem)); margin: 0 auto; }
header {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 18, 32, .7);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 5;
}
.nav { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.brand { font-weight: 700; letter-spacing: .02em; color: var(--text); text-decoration: none; }
.nav a:not(.brand) { color: var(--muted); text-decoration: none; margin-left: 1rem; }
.hero { padding: 4rem 0 2.5rem; }
.kicker {
  display: inline-block; font-size: .85rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--accent); margin-bottom: .75rem;
}
h1 { font-size: clamp(2rem, 5vw, 3.4rem); line-height: 1.15; margin: 0 0 1rem; }
.lede { font-size: 1.2rem; color: var(--muted); max-width: 42rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: .75rem; margin: 1.75rem 0 1rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent-2); color: #042033; font-weight: 700;
  text-decoration: none; border-radius: 999px; padding: .85rem 1.3rem;
  min-height: 2.75rem;
}
.btn:hover { background: var(--accent); color: #042033; }
.btn-ghost {
  background: transparent; color: var(--text); border: 1px solid var(--line);
}
.note { color: var(--muted); font-size: .95rem; }
.grid { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 800px) { .grid.two { grid-template-columns: 1fr 1fr; } }
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 1rem; padding: 1.35rem 1.4rem;
}
h2 { font-size: 1.7rem; margin: 0 0 .75rem; }
h3 { font-size: 1.15rem; margin: 1.1rem 0 .4rem; }
ol, ul { padding-left: 1.2rem; }
li { margin: .4rem 0; }
section { padding: 2.25rem 0; }
.tag { color: var(--ok); font-size: .85rem; font-weight: 700; }
.warn { color: var(--warn); }
footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 3rem; color: var(--muted); font-size: .92rem;
}
.faq details {
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: .75rem; padding: .85rem 1rem; margin: .6rem 0;
}
.faq summary { cursor: pointer; font-weight: 700; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }

.hero-split { display: grid; gap: 1.5rem; align-items: center; }
@media (min-width: 880px) { .hero-split { grid-template-columns: 1.15fr .85fr; } }
.sky-art { width: 100%; height: auto; display: block; border-radius: 1.1rem; border: 1px solid var(--line); }
.info { padding-top: 1.5rem; }
.info-head { max-width: 40rem; margin-bottom: 1.25rem; }
.info-grid { display: grid; gap: 1rem; }
@media (min-width: 800px) { .info-grid { grid-template-columns: repeat(3, 1fr); } }
.info-card { background: var(--card); border: 1px solid var(--line); border-radius: 1.1rem; padding: 1.25rem 1.2rem 1.4rem; min-height: 100%; }
.info-card .num {
  width: 2.4rem; height: 2.4rem; border-radius: 999px;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; background: #1d4ed8; color: #fff; margin-bottom: .7rem;
}
.info-card.bad .num { background: #9a3412; }
.info-card.good .num { background: #0f766e; }
.info-card h3 { margin: 0 0 .45rem; font-size: 1.25rem; }
.info-card p { margin: 0; color: var(--muted); }
.compare { display: grid; gap: .6rem; margin-top: 1.4rem; }
@media (min-width: 700px) { .compare { grid-template-columns: 1fr auto 1fr; align-items: stretch; } }
.compare-col { border-radius: 1rem; padding: 1.1rem 1.2rem; border: 1px solid var(--line); }
.compare-col.old { background: #2a1a16; }
.compare-col.new { background: #10261f; }
.compare-col h3 { margin-top: 0; }
.compare-vs {
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; color: var(--accent); letter-spacing: .08em;
}
.compare li { list-style: none; margin-left: 0; padding-left: 0; }
.compare ul { padding-left: 0; margin: .4rem 0 0; }