/* Fonts */
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("../fonts/ibm-plex-sans-latin.d28498895ed7.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;
}
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("../fonts/ibm-plex-sans-latin-ext.d313794bd9fd.woff2") format("woff2");
  unicode-range:
    U+0100-02BA,
    U+02BD-02C5,
    U+02C7-02CC,
    U+02CE-02D7,
    U+02DD-02FF,
    U+0304,
    U+0308,
    U+0329,
    U+1D00-1DBF,
    U+1E00-1E9F,
    U+1EF2-1EFF,
    U+2020,
    U+20A0-20AB,
    U+20AD-20C0,
    U+2113,
    U+2C60-2C7F,
    U+A720-A7FF;
}

:root {
  --bg: #fafaf5;
  --indigo: #1b1464;
  --gold: #c2760a;
  --text: #1a1a2e;
  --text-body: #3d3d3d;
  --text-muted: #8c8c8c;
  --text-subtle: #5c5c5c;
  --border: #e8e4de;

  --font-sans:
    "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;

  --space-xs: 12px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 60px;
  --space-2xl: 80px;
  --space-3xl: 100px;
  --space-4xl: 120px;
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

nav {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 10;
}
nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--indigo);
}
.logo span {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: var(--gold);
  border-radius: 50%;
  margin-left: 2px;
  vertical-align: baseline;
  position: relative;
  top: -1px;
}
.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}
.lang-select {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  letter-spacing: 0.05em;
  padding: 4px 0;
}
.lang-select:focus {
  outline: none;
}
.nav-cta {
  padding: 10px var(--space-md);
  background: var(--indigo);
  color: var(--bg);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: 6px;
  transition: background 0.2s;
}
.nav-cta:hover {
  background: var(--gold);
}

.hero {
  padding: var(--space-4xl) 0 var(--space-3xl);
  text-align: center;
}
.hero h1 {
  font-size: 3.2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--indigo);
  margin-bottom: var(--space-md);
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}
.hero h1 em {
  font-style: normal;
  color: var(--gold);
}
.hero .subtitle {
  font-size: 1.15rem;
  color: var(--text-body);
  max-width: 600px;
  margin: 0 auto var(--space-lg);
  line-height: 1.7;
}
.tagline {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

section {
  padding: var(--space-2xl) 0;
}

.solution .container {
  max-width: 640px;
  margin: 0;
  padding: 0 var(--space-md);
}
.section-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gold);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}
ul {
  list-style: none;
}
li {
  font-size: 1.05rem;
  color: var(--text-body);
  line-height: 1.7;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border);
}
li:first-child {
  border-top: 1px solid var(--border);
}

footer {
  padding: var(--space-xl) 0;
}
footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-left {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.footer-links {
  display: flex;
  gap: var(--space-md);
}
.footer-links a {
  font-size: 0.85rem;
  color: var(--text-subtle);
  text-decoration: none;
}
.footer-links a:hover {
  color: var(--indigo);
}

/* ── Tablet ── */
@media (max-width: 768px) {
  .hero {
    padding: var(--space-2xl) 0 var(--space-xl);
  }
  .hero h1 {
    font-size: 2.4rem;
  }
  .hero .subtitle {
    font-size: 1.05rem;
  }
  .solution .container {
    max-width: none;
    margin: 0 auto;
  }
  section {
    padding: var(--space-xl) 0;
  }
  footer {
    padding: var(--space-lg) 0;
  }
  footer .container {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}

/* ── Mobile ── */
@media (max-width: 480px) {
  .container {
    padding: 0 20px;
  }
  nav {
    padding: var(--space-sm) 0;
  }
  .logo {
    font-size: 1.3rem;
  }
  .logo span {
    width: 8px;
    height: 8px;
  }
  .nav-cta {
    padding: 8px 18px;
    font-size: 0.8rem;
  }
  .hero {
    padding: var(--space-xl) 0 48px;
  }
  .hero h1 {
    font-size: 1.8rem;
    margin-bottom: 20px;
  }
  .hero .subtitle {
    font-size: 1rem;
    margin: 0 auto 28px;
  }
  .tagline {
    font-size: 0.7rem;
  }
  section {
    padding: 48px 0;
  }
  li {
    font-size: 1rem;
  }
  .footer-links {
    gap: var(--space-sm);
  }
}