/* ── Base ── */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('../fonts/inter.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --indigo: #635BFF;
  --indigo-dark: #4F46E5;
  --indigo-light: #EEF2FF;
  --teal: #00D4AA;
  --teal-light: #E6FBF6;
  --navy: #0A2540;
  --navy-mid: #1A3A5C;
  --text: #425466;
  --text-light: #697386;
  --border: #E3E8EE;
  --bg: #FFFFFF;
  --bg-off: #F6F9FC;
  --bg-subtle: #FAFBFC;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Nav ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}
.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { display: flex; align-items: center; text-decoration: none; }
.logo img { height: 52px; width: auto; display: block; }
.nav-right { display: flex; align-items: center; gap: 16px; }
.nav-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--navy);
  text-decoration: none;
  padding: 6px 4px;
  transition: color 0.15s;
}
.nav-link:hover { color: var(--indigo); }
.nav-link--active { color: var(--indigo); }
.lang-switcher { position: relative; }
.lang-current {
  display: flex; align-items: center; gap: 4px;
  font-size: 0.75rem; font-weight: 600; color: var(--navy);
  cursor: pointer; padding: 5px 10px; border-radius: 6px;
  background: var(--bg-off); border: 1px solid var(--border);
  list-style: none; letter-spacing: 0.04em; user-select: none;
  transition: border-color 0.15s;
}
.lang-current::-webkit-details-marker { display: none; }
.lang-current svg { transition: transform 0.15s; }
.lang-switcher[open] .lang-current { border-color: var(--indigo); }
.lang-switcher[open] .lang-current svg { transform: rotate(180deg); }
.lang-dropdown {
  position: absolute; top: calc(100% + 6px); right: 0;
  background: #fff; border: 1px solid var(--border); border-radius: 8px;
  padding: 4px; min-width: 100px;
  box-shadow: 0 4px 16px rgba(10,37,64,0.1); z-index: 200;
}
.lang-option {
  display: block; padding: 7px 12px; font-size: 0.75rem; font-weight: 600;
  color: var(--text-light); text-decoration: none; border-radius: 5px;
  letter-spacing: 0.04em; transition: background 0.1s, color 0.1s;
}
.lang-option:hover { background: var(--bg-off); color: var(--navy); }
.lang-option--active { color: var(--indigo); }
.nav-cta {
  background: var(--indigo);
  color: #fff;
  padding: 9px 20px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
}
.nav-cta:hover { background: var(--indigo-dark); transform: translateY(-1px); }

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  background: var(--bg-subtle);
}
.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-copy { font-size: 0.825rem; color: var(--text-light); }
.footer-link {
  font-size: 0.825rem;
  color: var(--text-light);
  text-decoration: none;
  transition: color 0.15s;
}
.footer-link:hover { color: var(--indigo); }

/* ── Shared ── */
.container { max-width: 1120px; margin: 0 auto; }
.section-eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--indigo);
  margin-bottom: 12px;
}

/* ── Hero ── */
.cs-list-hero {
  padding: 80px 24px 40px;
  background: linear-gradient(180deg, #FAFBFF 0%, #FFFFFF 100%);
  position: relative;
  overflow: hidden;
}
.cs-list-hero::before {
  content: '';
  position: absolute;
  top: -100px; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 400px;
  background: radial-gradient(ellipse at center, rgba(99,91,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.cs-list-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 800;
  color: var(--navy);
  line-height: 1.15;
  letter-spacing: -0.03em;
  max-width: 640px;
  margin-bottom: 16px;
}
.cs-list-hero p {
  font-size: 1.05rem;
  color: var(--text-light);
  max-width: 520px;
  line-height: 1.75;
}

/* ── Grid ── */
.cs-list-section {
  padding: 40px 24px 120px;
  background: var(--bg);
}
.cs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
  margin-top: 48px;
}

/* ── Card ── */
.cs-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-off);
  border: 1.5px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  text-decoration: none;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.cs-card:hover {
  border-color: var(--indigo);
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(99,91,255,0.1);
}
.cs-card-top {
  background: var(--navy);
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
  min-height: 140px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.cs-card-top::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 160px; height: 160px;
  background: radial-gradient(circle, rgba(99,91,255,0.3) 0%, transparent 65%);
  pointer-events: none;
}
.cs-card-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0,212,170,0.15);
  color: var(--teal);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 12px;
  width: fit-content;
}
.cs-card-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1.25;
}
.cs-card-body {
  padding: 24px 28px 28px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 20px;
}
.cs-card-desc {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.7;
  flex: 1;
}
.cs-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--indigo);
  transition: gap 0.15s;
}
.cs-card:hover .cs-card-link { gap: 10px; }

@media (max-width: 640px) {
  .cs-list-hero { padding: 56px 20px 52px; }
  .cs-list-section { padding: 56px 20px 80px; }
  .cs-grid { grid-template-columns: 1fr; }
}