:root {
  --color-primary: #8B2E2E;
  --color-primary-light: #A84545;
  --color-primary-dark: #6B2222;
  --color-secondary: #3F5E4C;
  --color-secondary-light: #567A66;
  --color-accent: #C9A227;
  --color-accent-light: #E0C158;
  --color-bg: #FBF7F0;
  --color-bg-alt: #F4E9D8;
  --color-surface: #FFFFFF;
  --color-surface-glass: rgba(255, 255, 255, 0.72);
  --color-text: #2B2520;
  --color-text-soft: #5C534A;
  --color-text-muted: #8A7F73;
  --color-border: rgba(139, 46, 46, 0.16);
  --color-border-soft: rgba(43, 37, 32, 0.1);
  --shadow-sm: 0 2px 8px rgba(43, 37, 32, 0.06);
  --shadow-md: 0 8px 24px rgba(43, 37, 32, 0.1);
  --shadow-lg: 0 18px 48px rgba(43, 37, 32, 0.16);
  --shadow-glow: 0 0 0 1px rgba(139, 46, 46, 0.08), 0 12px 32px rgba(139, 46, 46, 0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --radius-pill: 999px;
  --font-serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", "Source Han Serif SC", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --header-height: 72px;
}

[data-theme="dark"] {
  --color-bg: #17120F;
  --color-bg-alt: #1F1915;
  --color-surface: #241D18;
  --color-surface-glass: rgba(36, 29, 24, 0.72);
  --color-text: #F2E9DE;
  --color-text-soft: #C9BCAE;
  --color-text-muted: #96897C;
  --color-border: rgba(201, 162, 39, 0.2);
  --color-border-soft: rgba(242, 233, 222, 0.1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.55);
  --shadow-glow: 0 0 0 1px rgba(201, 162, 39, 0.12), 0 12px 32px rgba(0, 0, 0, 0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #17120F;
    --color-bg-alt: #1F1915;
    --color-surface: #241D18;
    --color-surface-glass: rgba(36, 29, 24, 0.72);
    --color-text: #F2E9DE;
    --color-text-soft: #C9BCAE;
    --color-text-muted: #96897C;
    --color-border: rgba(201, 162, 39, 0.2);
    --color-border-soft: rgba(242, 233, 222, 0.1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.55);
    --shadow-glow: 0 0 0 1px rgba(201, 162, 39, 0.12), 0 12px 32px rgba(0, 0, 0, 0.5);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
  -webkit-text-size-adjust: 100%;
}

@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;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(139, 46, 46, 0.06), transparent 42%),
    radial-gradient(circle at 88% 92%, rgba(63, 94, 76, 0.06), transparent 46%);
  background-attachment: fixed;
  transition: background-color var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  line-height: 1.35;
  color: var(--color-text);
  margin: 0 0 0.75em;
  letter-spacing: 0.01em;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.6rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  font-weight: 700;
  position: relative;
  padding-bottom: 0.5em;
}

h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 600;
  margin-top: 1.6em;
}

p {
  margin: 0 0 1em;
  color: var(--color-text-soft);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover,
a:focus-visible {
  color: var(--color-accent);
}

[data-theme="dark"] a {
  color: var(--color-accent-light);
}

[data-theme="dark"] a:hover,
[data-theme="dark"] a:focus-visible {
  color: var(--color-accent);
}

img,
svg {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  padding-left: 1.4em;
  margin: 0 0 1em;
  color: var(--color-text-soft);
}

li {
  margin-bottom: 0.4em;
}

strong {
  color: var(--color-text);
  font-weight: 600;
}

blockquote {
  margin: 0 0 1.2em;
  padding: 1.2em 1.4em;
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

blockquote:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

blockquote p {
  margin: 0;
  color: var(--color-text);
  font-style: italic;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--color-primary);
  color: #F4E9D8;
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-alt);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--color-primary), var(--color-primary-dark));
  border-radius: var(--radius-pill);
  border: 2px solid var(--color-bg-alt);
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--color-border-soft);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 32px);
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--color-text);
}

.brand svg {
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.brand:hover svg {
  transform: rotate(-6deg) scale(1.06);
  box-shadow: var(--shadow-md);
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  background: linear-gradient(120deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.main-nav {
  flex: 1 1 auto;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 2px 4px;
}

.main-nav a {
  display: inline-block;
  padding: 6px 10px;
  font-size: 0.9rem;
  color: var(--color-text-soft);
  border-radius: var(--radius-pill);
  position: relative;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  transform: translateX(-50%);
  transition: width var(--transition-base);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--color-primary);
  background: rgba(139, 46, 46, 0.07);
}

[data-theme="dark"] .main-nav a:hover,
[data-theme="dark"] .main-nav a:focus-visible {
  color: var(--color-accent-light);
  background: rgba(201, 162, 39, 0.1);
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  width: 60%;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.site-search {
  display: flex;
  align-items: center;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-pill);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.site-search:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.18);
}

.site-search input {
  border: none;
  background: transparent;
  padding: 8px 14px;
  font-size: 0.85rem;
  font-family: inherit;
  color: var(--color-text);
  width: clamp(120px, 16vw, 200px);
  outline: none;
}

.site-search input::placeholder {
  color: var(--color-text-muted);
}

.site-search button {
  border: none;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #F4E9D8;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-family: inherit;
  cursor: pointer;
  transition: filter var(--transition-fast);
}

.site-search button:hover {
  filter: brightness(1.12);
}

.theme-toggle,
.menu-toggle {
  border: 1px solid var(--color-border-soft);
  background: var(--color-surface);
  color: var(--color-text-soft);
  font-family: inherit;
  font-size: 0.82rem;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle:hover,
.menu-toggle:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

[data-theme="dark"] .theme-toggle:hover,
[data-theme="dark"] .menu-toggle:hover {
  color: var(--color-accent-light);
  border-color: var(--color-accent);
}

.menu-toggle {
  display: none;
}

main {
  display: block;
}

.hero {
  position: relative;
  max-width: var(--max-width);
  margin: clamp(20px, 4vw, 40px) auto;
  padding: 0 clamp(16px, 4vw, 32px);
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.hero-slider {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
}

.slide {
  margin: 0;
  display: none;
  position: relative;
}

.slide.is-active {
  display: block;
  animation: slideFade 0.7s ease both;
}

@keyframes slideFade {
  from {
    opacity: 0;
    transform: scale(1.03);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.slide svg {
  width: 100%;
  height: auto;
  display: block;
}

.slide figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 16px;
  font-size: 0.75rem;
  color: rgba(244, 233, 216, 0.85);
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.35));
  width: 100%;
}

.slider-controls {
  position: absolute;
  right: 14px;
  bottom: 14px;
  display: flex;
  gap: 8px;
  z-index: 2;
}

.slider-controls button {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(244, 233, 216, 0.4);
  background: rgba(0, 0, 0, 0.28);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: #F4E9D8;
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.slider-controls button:hover {
  background: rgba(201, 162, 39, 0.7);
  transform: scale(1.08);
}

.hero-text {
  position: relative;
}

.hero-text h1 {
  background: linear-gradient(120deg, var(--color-primary) 0%, var(--color-primary-light) 45%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-bottom: 0.5em;
}

[data-theme="dark"] .hero-text h1 {
  background: linear-gradient(120deg, var(--color-accent-light) 0%, var(--color-primary-light) 60%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-lead {
  font-size: clamp(0.95rem, 1.6vw, 1.05rem);
  color: var(--color-text-soft);
  margin-bottom: 1.6em;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 0 0 1.8em;
  padding: 0;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 12px;
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: var(--color-border);
}

.stat strong {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 2.4vw, 1.6rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.1;
}

[data-theme="dark"] .stat strong {
  color: var(--color-accent-light);
}

.stat span {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  line-height: 1.4;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-size: 0.92rem;
  font-weight: 600;
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base), filter var(--transition-fast);
}

.btn-primary {
  color: #F4E9D8;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  box-shadow: 0 8px 20px rgba(139, 46, 46, 0.32);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.28) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform var(--transition-slow);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(139, 46, 46, 0.42);
}

.btn-primary:hover::before {
  transform: translateX(100%);
}

.btn-secondary {
  color: var(--color-primary);
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1.5px solid var(--color-primary);
}

.btn-secondary:hover {
  color: #F4E9D8;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-light));
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .btn-secondary {
  color: var(--color-accent-light);
  border-color: var(--color-accent);
}

[data-theme="dark"] .btn-secondary:hover {
  color: #17120F;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
}

.breadcrumb,
.anchor-nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 32px);
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0;
  margin: 0 0 20px;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  margin: 0;
}

.breadcrumb li + li::before {
  content: "›";
  margin: 0 8px;
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-soft);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.anchor-nav {
  margin-bottom: clamp(28px, 5vw, 48px);
}

.anchor-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px 16px;
  margin: 0;
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.anchor-nav li {
  margin: 0;
}

.anchor-nav a {
  display: inline-block;
  padding: 5px 14px;
  font-size: 0.82rem;
  color: var(--color-text-soft);
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.anchor-nav a:hover {
  color: var(--color-primary);
  background: rgba(139, 46, 46, 0.08);
  border-color: var(--color-border);
  transform: translateY(-2px);
}

[data-theme="dark"] .anchor-nav a:hover {
  color: var(--color-accent-light);
  background: rgba(201, 162, 39, 0.12);
  border-color: var(--color-border);
}

.section {
  max-width: var(--max-width);
  margin: 0 auto clamp(28px, 5vw, 56px);
  padding: clamp(24px, 4vw, 44px) clamp(20px, 4vw, 40px);
  background: var(--color-surface);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}

.section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-secondary));
  opacity: 0.85;
}

.section:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border);
}

.section > h2:first-child {
  margin-top: 0;
}

.section figure {
  margin: 1.6em 0 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.section figure svg {
  width: 100%;
  height: auto;
}

.section figcaption {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
  padding: 10px 0 0;
}

.section article {
  padding: 18px 20px;
  margin-bottom: 16px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.section article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border);
}

.section article h3 {
  margin-top: 0;
}

.section article time {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-bottom: 0.6em;
}

.section article p:last-child {
  margin-bottom: 0;
}

.section article a {
  font-weight: 600;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.section article a::after {
  content: "→";
  transition: transform var(--transition-fast);
}

.section article a:hover::after {
  transform: translateX(4px);
}

#products h3,
#advantages h3,
#solutions h3,
#culture h3,
#collection h3,
#seal-book h3,
#howto h3 {
  padding-left: 14px;
  border-left: 4px solid var(--color-accent);
}

#advantages ul,
#knowledge ul,
#sitemap ul,
#links ul {
  list-style: none;
  padding-left: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}

#advantages li,
#knowledge li,
#sitemap li,
#links li {
  margin: 0;
  padding: 12px 16px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base), background var(--transition-base);
}

#advantages li:hover,
#knowledge li:hover,
#sitemap li:hover,
#links li:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
  border-color: var(--color-border);
  background: var(--color-surface);
}

#sitemap ul,
#links ul {
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
}

#sitemap li a,
#links li a {
  display: block;
  color: var(--color-text-soft);
}

#sitemap li a:hover,
#links li a:hover {
  color: var(--color-primary);
}

#faq details {
  margin-bottom: 12px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

#faq details[open] {
  box-shadow: var(--shadow-sm);
  border-color: var(--color-border);
}

#faq summary {
  cursor: pointer;
  padding: 16px 20px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
  list-style: none;
  position: relative;
  padding-right: 48px;
  transition: color var(--transition-fast), background var(--transition-fast);
}

#faq summary::-webkit-details-marker {
  display: none;
}

#faq summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--color-primary);
  transition: transform var(--transition-base), color var(--transition-fast);
}

[data-theme="dark"] #faq summary::after {
  color: var(--color-accent-light);
}

#faq details[open] summary::after {
  content: "−";
  transform: translateY(-50%) rotate(180deg);
}

#faq summary:hover {
  color: var(--color-primary);
  background: rgba(139, 46, 46, 0.05);
}

[data-theme="dark"] #faq summary:hover {
  color: var(--color-accent-light);
  background: rgba(201, 162, 39, 0.08);
}

#faq details p {
  padding: 0 20px 18px;
  margin: 0;
  font-size: 0.9rem;
  animation: faqOpen var(--transition-base) ease both;
}

@keyframes faqOpen {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#howto ol {
  counter-reset: howto;
  list-style: none;
  padding-left: 0;
}

#howto ol li {
  counter-increment: howto;
  position: relative;
  padding: 10px 0 10px 52px;
  margin: 0;
  border-bottom: 1px dashed var(--color-border-soft);
}

#howto ol li:last-child {
  border-bottom: none;
}

#howto ol li::before {
  content: counter(howto);
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #F4E9D8;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: var(--shadow-sm);
}

#contact address {
  font-style: normal;
  padding: 20px 24px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  margin-bottom: 1.4em;
}

#contact address p {
  margin: 0 0 0.5em;
}

#contact address p:last-child {
  margin-bottom: 0;
}

#contact address a {
  font-weight: 600;
}

#author p,
#team p {
  font-size: 0.92rem;
}

#author p:first-of-type {
  font-size: 1rem;
  color: var(--color-text);
}

#legal h3 {
  color: var(--color-primary);
}

[data-theme="dark"] #legal h3 {
  color: var(--color-accent-light);
}

.site-footer {
  margin-top: clamp(32px, 6vw, 64px);
  background: linear-gradient(135deg, #2B2520 0%, #3A2E26 55%, #4A2E2E 100%);
  color: #E8D5B7;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-secondary));
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: clamp(28px, 5vw, 48px) clamp(20px, 4vw, 40px);
  text-align: center;
}

.footer-inner p {
  margin: 0 0 0.6em;
  font-size: 0.85rem;
  color: rgba(232, 213, 183, 0.78);
}

.footer-inner p:first-child {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: #F4E9D8;
  letter-spacing: 0.04em;
}

.footer-inner p:last-child {
  margin-bottom: 0;
}

.back-to-top {
  position: fixed;
  right: clamp(16px, 3vw, 32px);
  bottom: clamp(16px, 3vw, 32px);
  z-index: 900;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(244, 233, 216, 0.35);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #F4E9D8;
  font-size: 1.3rem;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: var(--shadow-glow);
}

noscript p {
  max-width: var(--max-width);
  margin: 0 auto 24px;
  padding: 14px 20px;
  background: rgba(201, 162, 39, 0.14);
  border: 1px solid rgba(201, 162, 39, 0.4);
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  color: var(--color-text);
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.section:nth-of-type(odd).reveal {
  transform: translateY(28px) translateX(-8px);
}

.section:nth-of-type(odd).reveal.is-visible {
  transform: translateY(0) translateX(0);
}

@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .hero-slider {
    order: -1;
  }

  .hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .main-nav a {
    padding: 6px 8px;
    font-size: 0.85rem;
  }
}

@media (max-width: 860px) {
  .header-inner {
    min-height: 64px;
  }

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

  .main-nav {
    order: 3;
    flex-basis: 100%;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height var(--transition-slow), opacity var(--transition-base);
  }

  .main-nav.is-open {
    max-height: 480px;
    opacity: 1;
    padding-bottom: 12px;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 2px;
  }

  .main-nav a {
    display: block;
    padding: 10px 14px;
    font-size: 0.92rem;
    border-radius: var(--radius-sm);
  }

  .main-nav a::after {
    display: none;
  }

  .header-tools {
    margin-left: auto;
  }

  .site-search input {
    width: 130px;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .header-inner {
    gap: 10px;
  }

  .brand-name {
    font-size: 1.15rem;
  }

  .site-search {
    display: none;
  }

  .hero {
    margin-top: 16px;
    padding: 0 14px;
  }

  .hero-slider {
    border-radius: var(--radius-lg);
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .stat {
    padding: 12px 10px;
  }

  .btn-primary,
  .btn-secondary {
    flex: 1 1 auto;
    padding: 12px 20px;
  }

  .breadcrumb,
  .anchor-nav {
    padding: 0 14px;
  }

  .anchor-nav ul {
    padding: 10px;
    gap: 6px;
  }

  .anchor-nav a {
    padding: 5px 10px;
    font-size: 0.76rem;
  }

  .section {
    padding: 22px 16px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
  }

  .section article {
    padding: 14px 16px;
  }

  #advantages ul,
  #knowledge ul,
  #sitemap ul,
  #links ul {
    grid-template-columns: 1fr;
  }

  #faq summary {
    padding: 14px 44px 14px 16px;
    font-size: 0.9rem;
  }

  #faq details p {
    padding: 0 16px 16px;
  }

  .footer-inner p {
    font-size: 0.8rem;
  }

  .back-to-top {
    width: 42px;
    height: 42px;
    font-size: 1.1rem;
  }
}

@media (max-width: 380px) {
  .hero-stats {
    grid-template-columns: 1fr;
  }

  .theme-toggle {
    padding: 8px 10px;
    font-size: 0.75rem;
  }
}

@media print {
  .site-header,
  .back-to-top,
  .slider-controls,
  .anchor-nav,
  .theme-toggle,
  .menu-toggle {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .section {
    box-shadow: none;
    border: 1px solid #ccc;
    break-inside: avoid;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}