body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  min-height: 52px;
  padding: 10px 0;
  background: rgba(245, 245, 247, 0.82);
  border-bottom: 1px solid transparent;
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.nav--scrolled {
  background: rgba(245, 245, 247, 0.94);
  border-bottom-color: var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.nav__logo img {
  width: 28px;
  height: 28px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav__link {
  position: relative;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-accent);
}

.nav__link--active::after {
  content: '';
  position: absolute;
  right: 0;
  bottom: -17px;
  left: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 5px;
  cursor: pointer;
}

.nav__toggle span {
  display: block;
  width: 21px;
  height: 1.5px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav__toggle--open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__toggle--open span:nth-child(2) { opacity: 0; }
.nav__toggle--open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.footer {
  background: #ffffff;
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.footer__brand { display: flex; flex-direction: column; gap: var(--spacing-md); }
.footer__logo { display: flex; align-items: center; gap: 8px; font-size: var(--font-size-lg); font-weight: 650; }
.footer__desc { max-width: 350px; color: var(--color-text-tertiary); font-size: var(--font-size-sm); line-height: 1.8; }
.footer__column h4 { margin-bottom: var(--spacing-lg); color: var(--color-text-primary); font-size: var(--font-size-sm); font-weight: 600; }
.footer__column ul { display: flex; flex-direction: column; gap: 10px; }
.footer__column a { color: var(--color-text-tertiary); font-size: var(--font-size-sm); transition: color var(--transition-fast); }
.footer__column a:hover { color: var(--color-accent); }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; padding-top: var(--spacing-xl); border-top: 1px solid var(--color-border); color: var(--color-text-muted); font-size: var(--font-size-xs); }

.section { padding: var(--spacing-5xl) 0; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: var(--spacing-md);
  color: var(--color-accent);
  font-size: var(--font-size-xs);
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-label::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

.section-title {
  margin-bottom: var(--spacing-lg);
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, var(--font-size-4xl));
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1.08;
}

.section-desc { max-width: 600px; color: var(--color-text-tertiary); font-size: var(--font-size-lg); line-height: 1.65; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 11px 24px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 550;
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.btn--primary { background: var(--color-accent); color: #ffffff; box-shadow: 0 8px 22px rgba(0, 113, 227, 0.2); }
.btn--primary:hover { background: #0077ed; transform: translateY(-1px); box-shadow: 0 12px 28px rgba(0, 113, 227, 0.26); }
.btn--ghost { background: rgba(0, 0, 0, 0.045); color: var(--color-text-primary); }
.btn--ghost:hover { background: rgba(0, 0, 0, 0.075); }
.btn--outline { color: var(--color-accent); border: 1px solid var(--color-border-accent); background: transparent; }
.btn--outline:hover { background: rgba(0, 113, 227, 0.06); transform: translateY(-1px); }

.glass-card {
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.045);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.glass-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.glass-card--glow:hover { box-shadow: var(--shadow-md); }

.fade-up {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.fade-up.visible { opacity: 1; transform: translateY(0); }
.page-transition { animation: pageIn 0.4s ease both; }

@keyframes pageIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.page-hero {
  position: relative;
  padding: 170px 0 88px;
  overflow: hidden;
  text-align: center;
  background: linear-gradient(180deg, #ffffff 0%, var(--color-bg-primary) 100%);
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -280px;
  left: 50%;
  width: 760px;
  height: 560px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 113, 227, 0.11), transparent 68%);
  pointer-events: none;
}

.page-hero__title { position: relative; margin-bottom: var(--spacing-md); font-family: var(--font-display); font-size: clamp(3rem, 8vw, var(--font-size-5xl)); font-weight: 720; letter-spacing: -0.055em; line-height: 1.03; }
.page-hero__title span { color: var(--color-accent); }
.page-hero__desc { position: relative; max-width: 620px; margin: 0 auto; color: var(--color-text-tertiary); font-size: var(--font-size-lg); line-height: 1.65; }

@media (max-width: 1024px) {
  .nav__links {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 999;
    flex-direction: column;
    justify-content: center;
    gap: var(--spacing-2xl);
    background: rgba(245, 245, 247, 0.98);
  }
  .nav__links--open { display: flex; }
  .nav__link { font-size: var(--font-size-2xl); font-weight: 600; }
  .nav__link--active::after { display: none; }
  .nav__toggle { display: flex; position: relative; z-index: 1000; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-2xl); }
}

@media (max-width: 768px) {
  .container, .nav__inner { padding-right: var(--spacing-lg); padding-left: var(--spacing-lg); }
  .footer { padding-top: var(--spacing-3xl); }
  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; gap: 8px; align-items: flex-start; }
  .section { padding: var(--spacing-3xl) 0; }
  .page-hero { padding: 128px 0 64px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .fade-up { opacity: 1; transform: none; }
}