:root {
  color-scheme: dark;
  --navy-950: #020b1d;
  --navy-900: #06152f;
  --navy-800: #0a2142;
  --cyan: #17c7f4;
  --cyan-soft: #8be8ff;
  --gold: #ffc72c;
  --text: #f4f8ff;
  --muted: #a9b9d0;
  --line: rgba(106, 207, 255, 0.22);
  --panel: rgba(8, 30, 59, 0.82);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 78% 12%, rgba(0, 195, 255, 0.14), transparent 34rem),
    linear-gradient(rgba(21, 124, 169, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 124, 169, 0.045) 1px, transparent 1px),
    var(--navy-950);
  background-size: auto, 42px 42px, 42px 42px, auto;
}

a { color: var(--cyan-soft); }
a:hover { color: white; }
.shell { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(2, 11, 29, 0.88);
  backdrop-filter: blur(18px);
}
.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; color: white; text-decoration: none; font-weight: 800; font-size: 1.15rem; }
.brand img { width: 44px; height: 44px; border-radius: 13px; }
.brand-x { color: var(--cyan); }
.brand-pro { color: var(--gold); }
.nav-links { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 8px 18px; }
.nav-links a { color: var(--muted); text-decoration: none; font-weight: 650; font-size: .95rem; }
.nav-links a:hover { color: white; }

.hero { padding: 96px 0 72px; display: grid; grid-template-columns: 1.25fr .75fr; gap: 64px; align-items: center; }
.eyebrow { margin: 0 0 18px; color: var(--cyan); font-size: .85rem; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
h1 { margin: 0; max-width: 800px; font-size: clamp(2.7rem, 7vw, 5.8rem); line-height: .98; letter-spacing: -.055em; }
.accent { color: var(--cyan); }
.gold { color: var(--gold); }
.lead { max-width: 680px; margin: 28px 0 0; color: var(--muted); font-size: clamp(1.08rem, 2vw, 1.28rem); line-height: 1.7; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button { display: inline-flex; align-items: center; min-height: 48px; padding: 0 20px; border-radius: 14px; border: 1px solid var(--line); color: white; text-decoration: none; font-weight: 780; background: rgba(8, 30, 59, .72); }
.button.primary { border-color: transparent; color: #001324; background: var(--cyan); }
.button:hover { transform: translateY(-1px); }
.hero-mark { position: relative; display: grid; place-items: center; }
.hero-mark::before { content: ""; position: absolute; width: 92%; aspect-ratio: 1; border-radius: 50%; background: rgba(23, 199, 244, .18); filter: blur(55px); }
.hero-mark img { position: relative; width: min(100%, 330px); border-radius: 28%; box-shadow: 0 32px 80px rgba(0,0,0,.4); }

.section { padding: 68px 0; }
.section-heading { display: flex; justify-content: space-between; gap: 28px; align-items: end; margin-bottom: 28px; }
.section-heading h2 { margin: 0; font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -.035em; }
.section-heading p { max-width: 500px; margin: 0; color: var(--muted); line-height: 1.65; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature { min-height: 190px; padding: 26px; border: 1px solid var(--line); border-radius: 22px; background: linear-gradient(145deg, rgba(10, 33, 66, .92), rgba(4, 18, 39, .82)); }
.feature b { display: block; color: var(--cyan); font-size: .82rem; letter-spacing: .1em; margin-bottom: 28px; }
.feature h3 { margin: 0 0 10px; font-size: 1.23rem; }
.feature p { margin: 0; color: var(--muted); line-height: 1.6; }
.support { margin: 34px 0 76px; padding: 30px; display: flex; justify-content: space-between; align-items: center; gap: 24px; border: 1px solid rgba(255, 199, 44, .35); border-radius: 22px; background: rgba(255, 199, 44, .06); }
.support h2 { margin: 0 0 8px; font-size: 1.5rem; }
.support p { margin: 0; color: var(--muted); }

.legal-wrap { width: min(900px, calc(100% - 40px)); margin: 0 auto; padding: 70px 0 90px; }
.legal-hero { padding-bottom: 34px; border-bottom: 1px solid var(--line); }
.legal-hero h1 { font-size: clamp(2.25rem, 6vw, 4.1rem); }
.meta { margin: 18px 0 0; color: var(--muted); }
.legal { padding-top: 28px; }
.legal h2 { margin: 38px 0 12px; color: var(--cyan-soft); font-size: 1.35rem; }
.legal p, .legal li { color: #c7d4e6; font-size: 1.02rem; line-height: 1.78; }
.legal ul, .legal ol { padding-left: 1.4rem; }
.notice { margin: 24px 0; padding: 20px; border-left: 4px solid var(--gold); background: rgba(255, 199, 44, .07); border-radius: 0 12px 12px 0; }
.legal-nav { display: flex; flex-wrap: wrap; gap: 10px 20px; margin-top: 30px; }
.legal-nav a { font-weight: 700; text-decoration: none; }

footer { border-top: 1px solid var(--line); color: var(--muted); }
.footer-inner { min-height: 110px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 10px 18px; }
.footer-links a { color: var(--muted); text-decoration: none; }

@media (max-width: 820px) {
  .nav { padding: 12px 0; align-items: flex-start; }
  .nav-links { gap: 7px 12px; }
  .hero { grid-template-columns: 1fr; padding-top: 64px; }
  .hero-mark { grid-row: 1; }
  .hero-mark img { width: 180px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .section-heading, .support, .footer-inner { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 560px) {
  .shell, .legal-wrap { width: min(100% - 28px, 1120px); }
  .brand { font-size: 1rem; }
  .brand img { width: 38px; height: 38px; }
  .nav-links a { font-size: .84rem; }
  .hero { gap: 42px; padding-bottom: 48px; }
  .feature-grid { grid-template-columns: 1fr; }
  .section { padding: 48px 0; }
}