.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(199, 187, 150, 0.75);
  background: rgba(250, 246, 236, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.site-header__inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-family: var(--display);
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.035em;
}

.brand__mark {
  position: relative;
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--brand);
}

.brand__mark::before,
.brand__mark::after,
.brand__mark span {
  position: absolute;
  left: 9px;
  height: 2px;
  border-radius: 2px;
  background: var(--paper);
  content: "";
}

.brand__mark::before {
  top: 10px;
  width: 16px;
}

.brand__mark span {
  top: 16px;
  width: 16px;
}

.brand__mark::after {
  top: 22px;
  width: 11px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  padding: 9px 12px;
  border-radius: 10px;
  color: var(--ink-soft);
  font-size: 0.94rem;
  font-weight: 600;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: var(--brand-soft);
  color: var(--brand-strong);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-actions .button {
  min-height: 44px;
  padding: 10px 16px;
  font-size: 0.92rem;
}

.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 1px solid var(--rule-strong);
  border-radius: 12px;
  background: var(--surface);
}

.menu-toggle__lines,
.menu-toggle__lines::before,
.menu-toggle__lines::after {
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 160ms ease, opacity 160ms ease;
}

.menu-toggle__lines {
  position: relative;
}

.menu-toggle__lines::before,
.menu-toggle__lines::after {
  position: absolute;
  left: 0;
  content: "";
}

.menu-toggle__lines::before {
  top: -6px;
}

.menu-toggle__lines::after {
  top: 6px;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__lines {
  background: transparent;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__lines::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__lines::after {
  top: 0;
  transform: rotate(-45deg);
}

.mobile-menu {
  display: none;
  padding: 0 20px 22px;
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
}

.mobile-menu[data-open="true"] {
  display: block;
}

.mobile-menu__links {
  display: grid;
  gap: 6px;
}

.mobile-menu__links a {
  padding: 12px 14px;
  border-radius: 10px;
  color: var(--ink-soft);
  font-weight: 650;
}

.mobile-menu__links a:hover,
.mobile-menu__links a[aria-current="page"] {
  background: var(--brand-soft);
  color: var(--brand-strong);
}

.mobile-menu__actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 14px;
}

.demo-notice {
  border-bottom: 1px solid #d7bb7b;
  background: var(--warning-soft);
}

.demo-notice__inner {
  display: flex;
  min-height: 58px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 10px;
}

.demo-notice p {
  margin: 0;
  color: #66420e;
  font-size: 0.95rem;
}

.demo-notice__links {
  display: flex;
  flex: 0 0 auto;
  gap: 18px;
}

.demo-notice__links a {
  color: #66420e;
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.demo-notice__links a:hover {
  color: var(--ink);
}

.site-footer {
  padding-block: 64px 30px;
  border-top: 1px solid var(--rule-strong);
  background: var(--ink);
  color: var(--paper);
}

.site-footer .brand {
  color: var(--paper);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, minmax(0, 0.8fr));
  gap: 46px;
}

.footer-intro p {
  max-width: 340px;
  margin: 18px 0 0;
  color: rgba(250, 246, 236, 0.68);
}

.footer-group h2 {
  margin-bottom: 17px;
  color: var(--paper);
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.footer-group ul {
  display: grid;
  gap: 11px;
  margin: 0;
  list-style: none;
}

.footer-group a {
  color: rgba(250, 246, 236, 0.72);
  font-size: 0.96rem;
}

.footer-group a:hover {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(250, 246, 236, 0.16);
  color: rgba(250, 246, 236, 0.56);
  font-size: 0.9rem;
}

.footer-bottom a {
  color: rgba(250, 246, 236, 0.78);
}

@media (max-width: 1040px) {
  .site-nav,
  .header-actions {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .footer-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .footer-intro {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .site-header__inner {
    min-height: 68px;
  }

  .mobile-menu__actions {
    grid-template-columns: 1fr;
  }

  .demo-notice__inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    padding-block: 13px;
  }

  .demo-notice__links {
    flex-wrap: wrap;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px 24px;
  }

  .footer-intro {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }
}