:root {
  --bg: #ffffff;
  --bg-soft: #f6f8fc;
  --ink: #0b1530;
  --muted: #59647d;
  --line: #e6ecf6;
  --blue: #0264ff;
  --blue-2: #0b8cff;
  --deep: #021c45;
  --tint: #eef4ff;
  --font-display: "Instrument Serif", Georgia, "Times New Roman", serif;
  --font-body: "Instrument Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;
  --maxw: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(20px, 4vw, 40px); }
h1, h2, h3 { margin: 0; font-weight: 400; }
h1 { font-family: var(--font-display); font-size: clamp(42px, 6vw, 74px); line-height: 1.02; letter-spacing: -0.02em; }
h2 { font-family: var(--font-display); font-size: clamp(30px, 4vw, 48px); line-height: 1.08; letter-spacing: -0.02em; }
h3 { font-size: 20px; font-weight: 650; letter-spacing: -0.01em; }
p { margin: 0; color: var(--muted); }
strong { color: var(--ink); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--blue);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.22em;
}
.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  background: currentColor;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(2,100,255,0.14);
}
.eyebrow.light { color: #d6e9ff; }
.eyebrow.light::before { box-shadow: 0 0 0 4px rgba(214,233,255,0.20); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 650;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn.sm { min-height: 40px; padding: 0 16px; font-size: 15px; border-radius: 10px; }
.btn.primary { background: var(--blue); color: #fff; box-shadow: 0 12px 28px rgba(2,100,255,0.28); }
.btn.primary:hover { transform: translateY(-2px); box-shadow: 0 18px 36px rgba(2,100,255,0.4); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { background: var(--bg-soft); }
.topbar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 9px 16px;
  text-align: center;
  font-size: 13.5px;
  font-weight: 650;
  color: #eaf2ff;
  background: linear-gradient(90deg, #021c45, #0247c2 50%, #021c45);
}
.tb-dot { width: 7px; height: 7px; border-radius: 50%; background: #5ee6a8; }
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(255,255,255,0.82), rgba(228,240,255,0.55) 45%, rgba(255,255,255,0.74));
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.55);
  box-shadow: 0 8px 30px rgba(2,40,97,0.07);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; max-width: var(--maxw); margin: 0 auto; padding: 14px clamp(20px, 4vw, 40px); }
.logo { display: inline-flex; align-items: center; gap: 9px; font-family: "Geist Mono", ui-monospace, "SF Mono", monospace; font-size: 20px; font-weight: 650; letter-spacing: -0.02em; color: var(--ink); }
.logo .mark { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: #fff; color: #0B0B0C; box-shadow: 0 3px 10px rgba(2,40,97,0.18), inset 0 0 0 1px rgba(2,40,97,0.10); }
.logo.dark .mark { box-shadow: 0 3px 10px rgba(0,0,0,0.3), inset 0 0 0 1px rgba(255,255,255,0.2); }
.logo.dark { color: #fff; }
.nav-links { display: flex; align-items: center; gap: clamp(14px, 2.4vw, 30px); }
.nav-links a { position: relative; font-size: 15.5px; color: var(--muted); font-weight: 500; }
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-cta { display: flex; align-items: center; gap: 10px; }
.hero {
  color: #fff;
  background: linear-gradient(150deg, #021c45 0%, #0247c2 56%, #0264ff 100%);
  padding: clamp(58px, 8vw, 104px) 0 clamp(70px, 9vw, 116px);
}
.hero h1 { color: #fff; max-width: 13.5ch; text-shadow: 0 2px 30px rgba(0,20,60,0.25); }
.hero p.lead { max-width: 700px; margin-top: 20px; color: rgba(255,255,255,0.88); font-size: clamp(18px, 1.7vw, 21px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.hero-actions .btn.ghost { color: #fff; border-color: rgba(255,255,255,0.38); }
.answer-strip {
  margin-top: -46px;
  position: relative;
  z-index: 2;
}
.answer-card {
  padding: clamp(22px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 24px 60px rgba(11,21,48,0.10);
}
.answer-card p { color: #2a3550; font-size: 18px; }
section { padding: clamp(58px, 8vw, 96px) 0; }
.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(260px, .55fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
}
.content { display: grid; gap: 28px; min-width: 0; }
.content h2 { margin-bottom: 12px; }
.content p + p { margin-top: 12px; }
.panel, .side-panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  padding: clamp(22px, 3vw, 30px);
}
.panel.soft, .side-panel { background: var(--bg-soft); }
.panel ul, .side-panel ul {
  display: grid;
  gap: 12px;
  margin: 16px 0 0;
  padding-left: 20px;
  color: var(--muted);
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.mini-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  padding: 22px;
}
.mini-card p { margin-top: 8px; font-size: 15.5px; }
table {
  width: 100%;
  max-width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  margin-top: 16px;
  font-size: 15px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}
th, td {
  border-bottom: 1px solid var(--line);
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  overflow-wrap: anywhere;
}
tr:last-child th, tr:last-child td { border-bottom: 0; }
th { color: var(--ink); background: var(--bg-soft); }
td { color: var(--muted); }
.faq-list { display: grid; gap: 12px; }
.faq-list details { border: 1px solid var(--line); border-radius: 14px; background: #fff; padding: 4px 20px; }
.faq-list details[open] { border-color: #cfdef7; box-shadow: 0 10px 30px rgba(11,21,48,0.06); }
.faq-list summary { list-style: none; cursor: pointer; padding: 16px 0; font-weight: 650; font-size: 17px; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; color: var(--blue); font-size: 22px; }
.faq-list details[open] summary::after { content: "-"; }
.faq-list details p { margin: 0 0 18px; color: var(--muted); font-size: 16px; }
.related { background: var(--bg-soft); }
.related h2 { text-align: center; margin-bottom: 28px; }
.cta {
  text-align: center;
  color: #fff;
  background: linear-gradient(150deg, #021c45, #0247c2 60%, #0264ff);
}
.cta h2 { color: #fff; max-width: 760px; margin: 0 auto; }
.cta p { max-width: 640px; margin: 16px auto 0; color: rgba(255,255,255,0.86); font-size: 18px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 30px; }
.cta .btn.ghost { color: #fff; border-color: rgba(255,255,255,0.38); }
footer { background: #060d22; color: rgba(255,255,255,0.7); padding: 56px 0 30px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; padding-bottom: 36px; border-bottom: 1px solid rgba(255,255,255,0.12); }
.foot-meta { margin: 16px 0 0; max-width: 440px; font-size: 15px; line-height: 1.6; color: rgba(255,255,255,0.7); }
.foot-links { display: flex; flex-direction: column; gap: 12px; }
.foot-links a { color: rgba(255,255,255,0.72); font-size: 15px; }
.foot-links a:hover { color: #fff; }
.foot-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding-top: 24px; font-size: 13px; color: rgba(255,255,255,0.5); }
@media (max-width: 920px) {
  .nav-links { display: none; }
  .nav-cta .btn.ghost { display: none; }
  .two-col, .foot-grid { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .comparison-table,
  .comparison-table thead,
  .comparison-table tbody,
  .comparison-table tr,
  .comparison-table th,
  .comparison-table td {
    display: block;
    width: 100%;
  }
  .comparison-table thead { display: none; }
  .comparison-table tr {
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }
  .comparison-table tr:last-child { border-bottom: 0; }
  .comparison-table th {
    border: 0;
    background: var(--bg-soft);
    padding: 12px 16px;
  }
  .comparison-table td {
    border: 0;
    padding: 10px 16px 0;
  }
  .comparison-table td::before {
    content: attr(data-label);
    display: block;
    margin-bottom: 4px;
    color: var(--blue);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
  }
}