body {
  background: var(--color-bg-primary);
  color: var(--color-text-body);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  overflow-x: hidden;
}

html {
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

.container {
  width: min(100% - 32px, var(--content-max-width));
  margin-inline: auto;
  margin-top: 30px;
}

.section {
  padding-bottom: var(--section-gap-desktop) ;
}

.section--soft {
  background: var(--color-bg-secondary);
}

.section--dark,
.page-hero,
.site-cta {
  position: relative;
  overflow: hidden;
  background: var(--color-dark-bg);
  color: var(--color-dark-text);
}

.section--dark::before,
.page-hero::before,
.site-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--noise-overlay);
  pointer-events: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--color-border-light);
  transition: box-shadow 0.3s ease, backdrop-filter 0.3s ease;
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 80px;
  gap: var(--space-8);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  min-width: max-content;
}

.brand img {
  width: 144px;
  height: auto;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--color-accent-20);
  color: var(--color-accent-dark);
  font-family: var(--font-heading);
  font-weight: var(--font-bold);
}

.brand-text {
  display: grid;
  color: var(--color-text-primary);
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: var(--font-bold);
  line-height: 1;
}

.brand-text small {
  margin-top: 5px;
  color: var(--color-text-secondary);
  font-family: var(--font-english);
  font-size: 10px;
  font-weight: var(--font-normal);
  letter-spacing: 0;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
}

.site-nav a {
  position: relative;
  padding: 30px 0;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 23px;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.3s ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-accent-dark);
}

.site-nav a.active::after,
.site-nav a:hover::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.header-phone {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-weight: var(--font-semibold);
  white-space: nowrap;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.mobile-nav {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(82vw, 310px);
  z-index: 70;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: 88px 24px 24px;
  background: var(--color-bg-primary);
  box-shadow: -16px 0 48px rgba(0, 0, 0, 0.14);
  transform: translateX(105%);
  transition: transform 0.3s ease;
}

.mobile-nav.open {
  transform: translateX(0);
}

.mobile-nav a {
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-primary);
  font-weight: var(--font-medium);
}

.mobile-nav-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 42px;
  height: 42px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-sm);
}

.mobile-scrim {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(26, 24, 22, 0.42);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mobile-scrim.open {
  opacity: 1;
  pointer-events: auto;
}

.page-hero {
  min-height: 520px;
  display: flex;
  align-items: center;
  background-color: var(--color-dark-bg);
  background-image:
    linear-gradient(90deg, rgba(26,24,22,0.90) 0%, rgba(26,24,22,0.76) 32%, rgba(26,24,22,0.42) 58%, rgba(26,24,22,0.18) 100%);
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

.page-hero--about {
  background-image:
    linear-gradient(90deg, rgba(26,24,22,0.90) 0%, rgba(26,24,22,0.76) 32%, rgba(26,24,22,0.42) 58%, rgba(26,24,22,0.18) 100%),
    url("/static/skin/images/about-hero.webp");
}

.page-hero--services {
  background-image:
    linear-gradient(90deg, rgba(26,24,22,0.90) 0%, rgba(26,24,22,0.76) 32%, rgba(26,24,22,0.42) 58%, rgba(26,24,22,0.18) 100%),
    url("/static/skin/images/service-hero.webp");
}

.page-hero--service-detail {
  background-image:
    linear-gradient(90deg, rgba(26,24,22,0.90) 0%, rgba(26,24,22,0.76) 32%, rgba(26,24,22,0.42) 58%, rgba(26,24,22,0.18) 100%),
    url("/static/skin/images/service-cleaning.webp");
}

.page-hero--stores {
  background-image:
    linear-gradient(90deg, rgba(26,24,22,0.90) 0%, rgba(26,24,22,0.76) 32%, rgba(26,24,22,0.42) 58%, rgba(26,24,22,0.18) 100%),
    url("/static/skin/images/store-shanghai.webp");
}

.page-hero--knowledge {
  background-image:
    linear-gradient(90deg, rgba(26,24,22,0.90) 0%, rgba(26,24,22,0.76) 32%, rgba(26,24,22,0.42) 58%, rgba(26,24,22,0.18) 100%),
    url("/static/skin/images/knowledge-hero.webp");
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  max-width: 760px;
  color: var(--color-text-inverse);
  font-family: var(--font-heading);
  font-size: var(--text-5xl);
  line-height: var(--leading-tight);
}

.page-hero p {
  max-width: 680px;
  margin-top: var(--space-6);
  color: var(--color-dark-text-secondary);
  font-size: var(--text-lg);
}

.breadcrumb {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  color: var(--color-dark-text-secondary);
  font-size: var(--text-sm);
}

.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 72px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: var(--space-12);
}

.footer-title {
  margin-bottom: var(--space-4);
  color: var(--color-footer-heading);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
}

.site-footer a {
  color: var(--color-footer-link);
}

.footer-links {
  display: grid;
  gap: var(--space-3);
  list-style: none;
}

.footer-note {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.45);
  font-size: var(--text-sm);
}

.mobile-bottom-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 45;
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  padding-bottom: env(safe-area-inset-bottom);
  background: var(--color-border);
  box-shadow: 0 -6px 20px rgba(0,0,0,0.08);
}

.mobile-bottom-bar a {
  display: grid;
  place-items: center;
  min-height: 56px;
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-weight: var(--font-medium);
}

.mobile-bottom-bar a:last-child {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: var(--color-text-inverse);
}

.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 40;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-primary);
  color: var(--color-accent-dark);
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
}

.back-to-top.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}