@font-face {
  font-family: "IBM Plex Sans";
  src: url("../fonts/ibm-plex-sans-400.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("../fonts/ibm-plex-sans-500.ttf") format("truetype");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("../fonts/ibm-plex-sans-600.ttf") format("truetype");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

:root {
  --brand-base: #f9f7f6;
  --brand-ink: #1c2a33;
  --brand-ink-soft: #2a3a45;
  --brand-accent: #2f5d6a;
  --brand-accent-soft: #d7e3e6;
  --brand-muted: #6f7c86;
  --brand-line: #e4e1df;
  --brand-panel: #ffffff;
  --shadow: 0 18px 40px rgba(20, 30, 40, 0.08);
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --transition: 180ms ease;
}

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

body {
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--brand-ink);
  background: linear-gradient(180deg, var(--brand-base) 0%, #f1f3f4 50%, #ffffff 100%);
  line-height: 1.6;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.topbar {
  background: #f3f1ef;
  border-bottom: 1px solid var(--brand-line);
  font-size: 0.85rem;
}

.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0;
  color: var(--brand-muted);
}

.topbar span {
  letter-spacing: 0.02em;
}

.header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(249, 247, 246, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(228, 225, 223, 0.7);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--brand-ink);
}

.brand img {
  width: 160px;
  height: auto;
  max-height: 48px;
  aspect-ratio: 723 / 215;
  flex-shrink: 0;
  object-fit: contain;
  display: block;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  font-size: 0.95rem;
  color: var(--brand-ink-soft);
}

.nav-links a {
  padding-bottom: 0.4rem;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--brand-ink);
  border-color: var(--brand-accent);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--brand-line);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  background: var(--brand-panel);
  font-size: 0.9rem;
}

.hero {
  padding: 3.5rem 0 2.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2.5rem;
  align-items: center;
}

.hero-content h1 {
  font-size: clamp(2rem, 2.8vw, 3rem);
  line-height: 1.2;
  margin-bottom: 0.8rem;
}

.hero-content p {
  color: var(--brand-muted);
  font-size: 1.05rem;
  margin-bottom: 1.1rem;
}

.hero-content .subtitle {
  font-weight: 500;
  color: var(--brand-ink-soft);
}

.hero-card {
  background: var(--brand-panel);
  padding: 1.3rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid rgba(228, 225, 223, 0.7);
}

.section {
  padding: 2.5rem 0;
}

.section h2 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem;
}

.card {
  background: var(--brand-panel);
  border-radius: var(--radius-md);
  border: 1px solid rgba(228, 225, 223, 0.7);
  padding: 1.2rem;
  box-shadow: 0 10px 24px rgba(20, 30, 40, 0.06);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(20, 30, 40, 0.08);
}

.list {
  display: grid;
  gap: 0.65rem;
  color: var(--brand-ink-soft);
}

.list li {
  padding-left: 1.2rem;
  position: relative;
}

.list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--brand-accent);
}

.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
  align-items: center;
}

.panel {
  background: var(--brand-panel);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(228, 225, 223, 0.7);
  padding: 1.8rem;
  box-shadow: var(--shadow);
}

.panel p + p {
  margin-top: 0.6rem;
}

.cta {
  background: var(--brand-accent-soft);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid rgba(47, 93, 106, 0.15);
  display: grid;
  gap: 0.8rem;
}

.cta a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--brand-accent);
  font-weight: 600;
}

.footer {
  background: var(--brand-ink);
  color: #e9eef0;
  padding: 2rem 0;
  margin-top: 3rem;
}

.footer .container {
  display: grid;
  gap: 0.6rem;
  font-size: 0.9rem;
}

.footer small {
  color: #b7c0c6;
}

.page-title {
  font-size: clamp(1.8rem, 2.5vw, 2.6rem);
  margin-bottom: 0.8rem;
}

.subtitle {
  font-size: 1.05rem;
}

@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    inset: 72px 16px auto;
    background: var(--brand-panel);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 1rem;
    flex-direction: column;
    gap: 1rem;
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }

  body.nav-open .nav-links {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
  }
}

@media (max-width: 720px) {
  .topbar .container {
    flex-direction: column;
    gap: 0.3rem;
  }

  .hero {
    padding-top: 2.5rem;
  }
}