:root {
  --c-primary: #8b2d2d;
  --c-primary-light: #a94442;
  --c-primary-dark: #6b1f1f;
  --c-accent: #c9a227;
  --c-accent-light: #e8c87a;
  --c-bg: #faf6ef;
  --c-bg-alt: #f2ebdf;
  --c-surface: #ffffff;
  --c-surface-glass: rgba(255, 255, 255, 0.72);
  --c-text: #2b2118;
  --c-text-soft: #5c4f42;
  --c-text-muted: #8a7a68;
  --c-border: rgba(139, 45, 45, 0.14);
  --c-border-strong: rgba(139, 45, 45, 0.28);
  --c-header-bg: rgba(250, 246, 239, 0.82);
  --c-shadow-sm: 0 2px 8px rgba(43, 33, 24, 0.06);
  --c-shadow-md: 0 8px 28px rgba(43, 33, 24, 0.1);
  --c-shadow-lg: 0 18px 50px rgba(43, 33, 24, 0.14);
  --grad-banner: linear-gradient(135deg, #8b2d2d 0%, #a94442 38%, #6b1f1f 72%, #3d1414 100%);
  --grad-accent: linear-gradient(120deg, #c9a227 0%, #e8c87a 100%);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --font-serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", Georgia, serif;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --transition: 0.32s cubic-bezier(0.22, 0.61, 0.36, 1);
  --maxw: 1200px;
}

html[data-theme="dark"] {
  --c-primary: #d16a6a;
  --c-primary-light: #e08a8a;
  --c-primary-dark: #a94442;
  --c-accent: #e8c87a;
  --c-accent-light: #f2dfa8;
  --c-bg: #14100d;
  --c-bg-alt: #1c1712;
  --c-surface: #211b15;
  --c-surface-glass: rgba(33, 27, 21, 0.72);
  --c-text: #f0e6d8;
  --c-text-soft: #cbbba6;
  --c-text-muted: #9a8b78;
  --c-border: rgba(232, 200, 122, 0.14);
  --c-border-strong: rgba(232, 200, 122, 0.3);
  --c-header-bg: rgba(20, 16, 13, 0.82);
  --c-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --c-shadow-md: 0 8px 28px rgba(0, 0, 0, 0.5);
  --c-shadow-lg: 0 18px 50px rgba(0, 0, 0, 0.6);
  --grad-banner: linear-gradient(135deg, #3d1414 0%, #6b1f1f 38%, #8b2d2d 72%, #a94442 100%);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.78;
  color: var(--c-text);
  background-color: var(--c-bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(201, 162, 39, 0.06), transparent 42%),
    radial-gradient(circle at 88% 92%, rgba(139, 45, 45, 0.06), transparent 46%);
  background-attachment: fixed;
  transition: background-color var(--transition), color var(--transition);
  overflow-x: hidden;
}

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

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

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

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

h1 {
  font-size: clamp(1.7rem, 3.6vw, 2.6rem);
  margin: 0 0 0.6em;
}

h2 {
  font-size: clamp(1.4rem, 2.6vw, 1.95rem);
  margin: 0 0 0.7em;
  position: relative;
  padding-left: 0.85em;
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  bottom: 0.18em;
  width: 5px;
  border-radius: 3px;
  background: var(--grad-accent);
}

h3 {
  font-size: clamp(1.12rem, 1.9vw, 1.3rem);
  margin: 1.6em 0 0.55em;
  color: var(--c-primary);
}

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

ul,
ol {
  margin: 0 0 1.2em;
  padding-left: 1.4em;
  color: var(--c-text-soft);
}

li {
  margin-bottom: 0.45em;
}

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

blockquote {
  margin: 1.2em 0;
  padding: 1em 1.4em;
  border-left: 4px solid var(--c-accent);
  background: var(--c-surface-glass);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--c-shadow-sm);
}

blockquote p {
  margin: 0 0 0.6em;
  font-style: italic;
}

blockquote p:last-child {
  margin-bottom: 0;
}

.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;
}

/* ============ Header ============ */
#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--c-header-bg);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border-bottom: 1px solid var(--c-border);
  transition: background var(--transition), box-shadow var(--transition);
}

#site-header.scrolled {
  box-shadow: var(--c-shadow-md);
}

.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0.7rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  flex-shrink: 0;
  color: var(--c-text);
}

.logo svg {
  border-radius: 9px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.logo:hover svg {
  transform: rotate(-6deg) scale(1.05);
  box-shadow: 0 6px 18px rgba(139, 45, 45, 0.4);
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: var(--grad-banner);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

html[data-theme="dark"] .logo-text {
  background: var(--grad-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

#site-header nav {
  flex: 1 1 auto;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.35rem;
  align-items: center;
}

.nav-list li {
  margin: 0;
}

.nav-list a {
  display: inline-block;
  padding: 0.42rem 0.72rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--c-text-soft);
  position: relative;
  transition: color var(--transition), background var(--transition), transform var(--transition);
}

.nav-list a::after {
  content: "";
  position: absolute;
  left: 0.72rem;
  right: 0.72rem;
  bottom: 0.24rem;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--c-primary);
  background: var(--c-bg-alt);
  transform: translateY(-1px);
}

.nav-list a:hover::after,
.nav-list a:focus-visible::after {
  transform: scaleX(1);
}

.site-search {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
}

.site-search input {
  width: 11rem;
  padding: 0.48rem 0.85rem;
  font-size: 0.88rem;
  font-family: var(--font-sans);
  color: var(--c-text);
  background: var(--c-surface);
  border: 1px solid var(--c-border-strong);
  border-radius: 999px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition), width var(--transition);
}

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

.site-search input:focus {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(139, 45, 45, 0.14);
  width: 13rem;
}

.site-search button {
  padding: 0.48rem 0.95rem;
  font-size: 0.86rem;
  font-family: var(--font-sans);
  color: #fff;
  background: var(--grad-banner);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

.site-search button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(139, 45, 45, 0.34);
  filter: brightness(1.08);
}

#theme-toggle,
#menu-toggle {
  padding: 0.46rem 0.9rem;
  font-size: 0.84rem;
  font-family: var(--font-sans);
  color: var(--c-primary);
  background: var(--c-surface-glass);
  border: 1px solid var(--c-border-strong);
  border-radius: 999px;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
}

#theme-toggle:hover,
#menu-toggle:hover {
  background: var(--c-primary);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--c-shadow-sm);
}

#menu-toggle {
  display: none;
}

/* ============ Main layout ============ */
main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem 3rem;
}

main > section {
  margin: 2.6rem 0;
  padding: 2rem 1.75rem;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--c-shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

main > section:hover {
  box-shadow: var(--c-shadow-md);
  border-color: var(--c-border-strong);
}

/* ============ Hero ============ */
#hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 2rem;
  align-items: center;
  margin-top: 1.6rem;
  padding: 2.6rem 2rem;
  background: var(--grad-banner);
  border: none;
  border-radius: var(--radius-xl);
  overflow: hidden;
  color: #f5e6c8;
  box-shadow: var(--c-shadow-lg);
}

#hero::before {
  content: "";
  position: absolute;
  inset: -40% -20% auto auto;
  width: 60%;
  height: 160%;
  background: radial-gradient(circle, rgba(232, 200, 122, 0.22), transparent 62%);
  pointer-events: none;
}

#hero::after {
  content: "";
  position: absolute;
  inset: auto auto -50% -15%;
  width: 55%;
  height: 130%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1), transparent 65%);
  pointer-events: none;
}

#hero:hover {
  box-shadow: var(--c-shadow-lg);
}

.hero-text {
  position: relative;
  z-index: 2;
}

.hero-text h1 {
  color: #fdf6e8;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.28);
}

.hero-lead {
  color: rgba(245, 230, 200, 0.92);
  font-size: 0.97rem;
  line-height: 1.85;
  margin-bottom: 1.6rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.7rem;
  margin-bottom: 1.7rem;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  padding: 0.85rem 0.4rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(245, 230, 200, 0.22);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
}

.stat:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.17);
  border-color: rgba(232, 200, 122, 0.55);
}

.stat-num {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  font-weight: 700;
  color: #f2dfa8;
  line-height: 1.1;
}

.stat-label {
  font-size: 0.72rem;
  color: rgba(245, 230, 200, 0.82);
  text-align: center;
  letter-spacing: 0.02em;
}

.cta {
  display: inline-block;
  padding: 0.8rem 2rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: #4a2c2a;
  background: var(--grad-accent);
  border-radius: 999px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.26);
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

.cta:hover,
.cta:focus-visible {
  color: #3d1414;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.34);
  filter: brightness(1.06);
}

/* ============ Carousel ============ */
.hero-carousel {
  position: relative;
  z-index: 2;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 46px rgba(0, 0, 0, 0.34);
  background: rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.slide {
  display: none;
  position: relative;
  animation: fadeSlide 0.6s ease both;
}

.slide.active {
  display: block;
}

.slide svg {
  width: 100%;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.slide-caption {
  margin: 0;
  padding: 0.8rem 1rem;
  font-size: 0.86rem;
  color: #f5e6c8;
  text-align: center;
  background: rgba(0, 0, 0, 0.32);
  letter-spacing: 0.03em;
}

@keyframes fadeSlide {
  from {
    opacity: 0;
    transform: translateX(18px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.carousel-prev,
.carousel-next {
  position: absolute;
  top: 42%;
  transform: translateY(-50%);
  width: 2.6rem;
  height: 2.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  line-height: 1;
  color: #f5e6c8;
  background: rgba(0, 0, 0, 0.36);
  border: 1px solid rgba(245, 230, 200, 0.3);
  border-radius: 50%;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background var(--transition), transform var(--transition);
}

.carousel-prev {
  left: 0.7rem;
}

.carousel-next {
  right: 0.7rem;
}

.carousel-prev:hover,
.carousel-next:hover {
  background: var(--c-primary);
  transform: translateY(-50%) scale(1.08);
}

/* ============ Breadcrumb ============ */
#breadcrumb {
  margin: 1.4rem 0 0;
  padding: 0.7rem 1.2rem;
  background: var(--c-surface-glass);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--c-shadow-sm);
}

#breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  font-size: 0.84rem;
}

#breadcrumb li {
  margin: 0;
  color: var(--c-text-muted);
}

#breadcrumb li + li::before {
  content: "›";
  margin-right: 0.4rem;
  color: var(--c-text-muted);
}

#breadcrumb a {
  color: var(--c-primary);
}

#breadcrumb a:hover {
  color: var(--c-accent);
}

/* ============ Timeline ============ */
.timeline {
  list-style: none;
  padding: 0;
  margin: 1rem 0 1.4rem;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0.42rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-accent), var(--c-primary), transparent);
  border-radius: 2px;
}

.timeline li {
  position: relative;
  padding-left: 1.9rem;
  margin-bottom: 0.9rem;
  color: var(--c-text-soft);
}

.timeline li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 50%;
  background: var(--c-surface);
  border: 3px solid var(--c-primary);
  box-shadow: 0 0 0 3px rgba(139, 45, 45, 0.12);
  transition: transform var(--transition), border-color var(--transition);
}

.timeline li:hover::before {
  transform: scale(1.18);
  border-color: var(--c-accent);
}

/* ============ News ============ */
.news-item {
  padding: 1.3rem 1.4rem;
  margin-bottom: 1.1rem;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
}

.news-item:hover {
  transform: translateY(-4px);
  background: var(--c-surface);
  border-color: var(--c-border-strong);
  box-shadow: var(--c-shadow-md);
}

.news-item h3 {
  margin-top: 0;
  margin-bottom: 0.4rem;
}

.news-item .meta {
  font-size: 0.8rem;
  color: var(--c-text-muted);
  margin-bottom: 0.6rem;
  letter-spacing: 0.02em;
}

.news-item a {
  display: inline-block;
  font-size: 0.86rem;
  font-weight: 600;
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  background: var(--c-surface-glass);
  border: 1px solid var(--c-border-strong);
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

.news-item a:hover {
  background: var(--c-primary);
  color: #fff;
  transform: translateX(3px);
}

/* ============ FAQ ============ */
#faq details {
  margin-bottom: 0.7rem;
  padding: 0.9rem 1.2rem;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

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

#faq details:hover {
  border-color: var(--c-primary);
}

#faq summary {
  cursor: pointer;
  font-weight: 600;
  font-family: var(--font-serif);
  color: var(--c-text);
  list-style: none;
  position: relative;
  padding-right: 1.6rem;
  transition: color var(--transition);
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--c-primary);
  transition: transform var(--transition), color var(--transition);
}

#faq details[open] summary::after {
  content: "−";
  color: var(--c-accent);
}

#faq summary:hover {
  color: var(--c-primary);
}

#faq details p {
  margin: 0.7rem 0 0.1rem;
  animation: fadeSlide 0.4s ease both;
}

/* ============ Contact ============ */
.contact-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0.8rem;
}

.contact-list li {
  margin: 0;
  padding: 0.85rem 1.1rem;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.contact-list li:hover {
  transform: translateY(-3px);
  border-color: var(--c-border-strong);
  box-shadow: var(--c-shadow-sm);
}

/* ============ Sitemap & Links ============ */
.sitemap-list,
.friend-links {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.sitemap-list li,
.friend-links li {
  margin: 0;
}

.sitemap-list a,
.friend-links a {
  display: inline-block;
  padding: 0.42rem 1rem;
  font-size: 0.86rem;
  color: var(--c-text-soft);
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  border-radius: 999px;
  transition: background var(--transition), color var(--transition), transform var(--transition), border-color var(--transition);
}

.sitemap-list a:hover,
.friend-links a:hover {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
  transform: translateY(-2px);
}

/* ============ Footer ============ */
#site-footer {
  background: var(--grad-banner);
  color: rgba(245, 230, 200, 0.88);
  margin-top: 2rem;
  border-top: 3px solid var(--c-accent);
}

.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2.4rem 1.25rem;
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 2rem;
}

.footer-about p,
.footer-meta p {
  margin: 0 0 0.55rem;
  font-size: 0.86rem;
  color: rgba(245, 230, 200, 0.82);
}

.footer-about strong {
  color: #f2dfa8;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  letter-spacing: 0.03em;
}

.footer-meta p:last-child {
  color: rgba(245, 230, 200, 0.6);
  font-size: 0.78rem;
}

/* ============ Back to top ============ */
#back-to-top {
  position: fixed;
  right: 1.4rem;
  bottom: 1.6rem;
  z-index: 90;
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: #f5e6c8;
  background: var(--grad-banner);
  border: 1px solid rgba(245, 230, 200, 0.3);
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  box-shadow: var(--c-shadow-md);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition), background var(--transition);
}

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

#back-to-top:hover {
  background: var(--grad-accent);
  color: #3d1414;
  transform: translateY(-4px) scale(1.06);
}

/* ============ Scroll reveal ============ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
  will-change: opacity, transform;
}

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

/* ============ Focus ============ */
a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 2px;
}

/* ============ Responsive ============ */
@media (max-width: 1080px) {
  #hero {
    grid-template-columns: 1fr;
    padding: 2.2rem 1.6rem;
  }

  .hero-carousel {
    max-width: 560px;
    margin: 0 auto;
    width: 100%;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 1.4rem;
  }
}

@media (max-width: 900px) {
  #menu-toggle {
    display: inline-block;
  }

  #site-header nav {
    order: 5;
    flex-basis: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }

  #site-header.nav-open nav {
    max-height: 520px;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    padding: 0.6rem 0 0.2rem;
  }

  .nav-list a {
    padding: 0.6rem 0.9rem;
    border-radius: var(--radius-sm);
  }

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

  .site-search {
    order: 6;
    flex-basis: 100%;
    padding-bottom: 0.3rem;
  }

  .site-search input {
    flex: 1;
    width: auto;
  }

  .site-search input:focus {
    width: auto;
  }

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

@media (max-width: 640px) {
  body {
    font-size: 15px;
    line-height: 1.72;
  }

  .header-inner {
    padding: 0.6rem 0.9rem;
    gap: 0.6rem;
  }

  .logo-text {
    font-size: 1.1rem;
  }

  main {
    padding: 0 0.85rem 2rem;
  }

  main > section {
    margin: 1.6rem 0;
    padding: 1.3rem 1.05rem;
    border-radius: var(--radius-md);
  }

  #hero {
    margin-top: 1rem;
    padding: 1.6rem 1.15rem;
    border-radius: var(--radius-lg);
    gap: 1.4rem;
  }

  .hero-lead {
    font-size: 0.9rem;
  }

  .hero-stats {
    gap: 0.5rem;
  }

  .stat {
    padding: 0.65rem 0.3rem;
  }

  .stat-label {
    font-size: 0.66rem;
  }

  .cta {
    width: 100%;
    text-align: center;
    padding: 0.78rem 1.2rem;
  }

  .carousel-prev,
  .carousel-next {
    width: 2.2rem;
    height: 2.2rem;
    font-size: 1.25rem;
  }

  .contact-list {
    grid-template-columns: 1fr;
  }

  .sitemap-list a,
  .friend-links a {
    font-size: 0.8rem;
    padding: 0.36rem 0.8rem;
  }

  #back-to-top {
    right: 0.9rem;
    bottom: 1rem;
    width: 2.6rem;
    height: 2.6rem;
  }

  blockquote {
    padding: 0.85rem 1rem;
  }
}

@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;
  }

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

@media print {
  #site-header,
  #back-to-top,
  .hero-carousel,
  .site-search,
  #theme-toggle,
  #menu-toggle {
    display: none !important;
  }

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

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