:root {
  --navy: #07121f;
  --ink: #0b1b2b;
  --ink-2: #142433;
  --paper: #f4f7fb;
  --white: #ffffff;
  --muted: #5b6b7c;
  --line: rgba(11, 27, 43, 0.08);
  --teal: #28b5cd;
  --teal-deep: #178ea3;
  --violet: #1aa7bc;
  --violet-soft: #4ec3d2;
  --grad: linear-gradient(135deg, #1aa7bc 0%, #0a2540 100%);
  --grad-dark: linear-gradient(160deg, #07121f 0%, #0a2540 58%, #0c3340 100%);
  --shadow: 0 18px 50px -24px rgba(7, 18, 31, 0.35);
  --radius: 22px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

h1, h2, h3 { letter-spacing: -0.035em; line-height: 1.12; }
h1 { font-size: clamp(2.4rem, 6vw, 4.4rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); }
h3 { font-size: 1.2rem; }
.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--teal-deep);
}
.lead { font-size: 1.12rem; color: var(--muted); max-width: 640px; }

.header {
  position: sticky; top: 0; z-index: 40;
  backdrop-filter: blur(16px);
  background: rgba(244, 247, 251, 0.82);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; min-height: 76px; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: -0.03em; }
.logo img.lockup { height: 42px; width: auto; max-width: 220px; object-fit: contain; }
.logo img.mark { width: 38px; height: 38px; object-fit: contain; }
.logo .word { display: flex; flex-direction: column; line-height: 1; }
.logo .word b { font-size: 0.95rem; color: var(--ink); }
.logo .word span { font-size: 0.72rem; color: var(--teal-deep); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.nav-links { display: flex; align-items: center; gap: 22px; font-size: 0.92rem; font-weight: 600; color: #334155; }
.nav-links a.active, .nav-links a:hover { color: var(--ink); }
.lang-switch { display: flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.lang-switch a { padding: 6px 10px; font-size: 0.75rem; }
.lang-switch a.active { background: var(--ink); color: #fff; }
.menu-toggle { display: none; background: none; border: 0; width: 42px; height: 42px; }
.menu-toggle span { display: block; height: 2px; background: var(--ink); margin: 6px 8px; }

.hero {
  position: relative; overflow: hidden;
  background: var(--grad-dark); color: #fff;
  padding: 88px 0 96px;
}
.hero::after {
  content: ""; position: absolute; inset: auto -10% -30% 40%;
  height: 420px; border-radius: 50%;
  background: radial-gradient(circle, rgba(40,181,205,0.28), transparent 65%);
  pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 48px; align-items: center; position: relative; z-index: 1; }
.hero h1 span { display: block; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lead { color: rgba(255,255,255,0.74); margin: 18px 0 28px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(10px);
}
.hero-card dt { font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--teal); font-weight: 700; }
.hero-card dd { margin: 6px 0 16px; color: rgba(255,255,255,0.86); font-weight: 600; }
.hero-card dd:last-child { margin-bottom: 0; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 999px; padding: 13px 20px; font-weight: 700; font-size: 0.94rem;
  border: 0; cursor: pointer; transition: 0.2s ease;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 10px 24px -12px #28b5cd; }
.btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.2); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-line { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn:hover { transform: translateY(-1px); }

.section { padding: 88px 0; }
.section.alt { background: #fff; }
.section-head { max-width: 720px; margin-bottom: 40px; }
.section-head p { margin-top: 12px; color: var(--muted); }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow);
}
.card .icon {
  width: 44px; height: 44px; border-radius: 14px; display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(26,167,188,0.16), rgba(10,37,64,0.10));
  margin-bottom: 16px; font-size: 1.2rem;
}
.card p { color: var(--muted); margin-top: 8px; }
.pill {
  display: inline-block; margin-top: 14px; font-size: 0.78rem; font-weight: 700;
  color: var(--teal-deep); letter-spacing: 0.04em;
}

.band {
  background: var(--ink); color: #fff; padding: 72px 0;
}
.band .lead { color: rgba(255,255,255,0.7); }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 36px; }
.stat { border-top: 1px solid rgba(255,255,255,0.12); padding-top: 16px; }
.stat b { display: block; font-size: 1.8rem; letter-spacing: -0.04em; }
.stat span { color: rgba(255,255,255,0.62); font-size: 0.92rem; }

.method-list { display: grid; gap: 16px; }
.method-item {
  display: grid; grid-template-columns: 88px 1fr; gap: 18px; align-items: start;
  background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 20px;
}
.method-item .tag {
  font-size: 0.72rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--teal-deep);
}

.join-card { display: flex; flex-direction: column; min-height: 320px; }
.join-card .mail { margin-top: auto; word-break: break-all; color: var(--teal-deep); font-weight: 700; }

.contact-item { display: flex; gap: 14px; margin-bottom: 22px; }
.contact-item h4 { font-size: 0.95rem; }
.contact-item p { color: var(--muted); }

.footer { background: #061018; color: rgba(255,255,255,0.72); padding: 48px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 24px; }
.footer h4 { color: #fff; margin-bottom: 12px; font-size: 0.9rem; }
.footer a:hover { color: #fff; }
.footer-bottom {
  margin-top: 32px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.08);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 0.82rem;
}

.page-hero { background: var(--grad-dark); color: #fff; padding: 64px 0 56px; }
.page-hero .lead { color: rgba(255,255,255,0.72); margin-top: 12px; }

@media (max-width: 900px) {
  .hero-grid, .grid-3, .grid-2, .footer-grid, .stats, .method-item { grid-template-columns: 1fr; }
  .nav-links {
    display: none; position: absolute; inset: 76px 16px auto; background: #fff;
    border: 1px solid var(--line); border-radius: 16px; padding: 16px; flex-direction: column; align-items: flex-start;
  }
  .nav-links.open { display: flex; }
  .menu-toggle { display: block; }
  .hero { padding: 56px 0 64px; }
}