:root {
  --color-primary: #c8553d;
  --color-primary-dark: #a8432f;
  --color-primary-light: #e8a87c;
  --color-secondary: #4a7a9a;
  --color-accent: #a8b87a;
  --color-bg: #fdf8f4;
  --color-bg-alt: #f7e6d8;
  --color-surface: #ffffff;
  --color-surface-glass: rgba(255, 255, 255, 0.72);
  --color-text: #3a2e28;
  --color-text-soft: #6b5a50;
  --color-text-muted: #9a877c;
  --color-border: rgba(200, 85, 61, 0.14);
  --color-shadow: rgba(122, 74, 58, 0.12);
  --color-shadow-strong: rgba(122, 74, 58, 0.22);
  --gradient-hero: linear-gradient(135deg, #f7e6d8 0%, #f0d5c4 40%, #e8a87c 100%);
  --gradient-primary: linear-gradient(135deg, #c8553d 0%, #e8a87c 100%);
  --gradient-soft: linear-gradient(135deg, rgba(200, 85, 61, 0.08) 0%, rgba(232, 168, 124, 0.14) 100%);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --radius-pill: 999px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", Georgia, serif;
  --space-xs: 0.5rem;
  --space-sm: 0.875rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --max-width: 1200px;
  --header-height: 72px;
  --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(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --color-primary: #e07a5f;
  --color-primary-dark: #c8553d;
  --color-primary-light: #f0b89c;
  --color-secondary: #7aa8c4;
  --color-accent: #b8c88a;
  --color-bg: #1a1512;
  --color-bg-alt: #241d18;
  --color-surface: #2a221d;
  --color-surface-glass: rgba(42, 34, 29, 0.72);
  --color-text: #f0e6de;
  --color-text-soft: #c9b8ad;
  --color-text-muted: #8a7a70;
  --color-border: rgba(224, 122, 95, 0.18);
  --color-shadow: rgba(0, 0, 0, 0.35);
  --color-shadow-strong: rgba(0, 0, 0, 0.5);
  --gradient-hero: linear-gradient(135deg, #2a1f1a 0%, #3a2820 45%, #5a3a2a 100%);
  --gradient-primary: linear-gradient(135deg, #e07a5f 0%, #f0b89c 100%);
  --gradient-soft: linear-gradient(135deg, rgba(224, 122, 95, 0.1) 0%, rgba(240, 184, 156, 0.08) 100%);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary: #e07a5f;
    --color-primary-dark: #c8553d;
    --color-primary-light: #f0b89c;
    --color-secondary: #7aa8c4;
    --color-accent: #b8c88a;
    --color-bg: #1a1512;
    --color-bg-alt: #241d18;
    --color-surface: #2a221d;
    --color-surface-glass: rgba(42, 34, 29, 0.72);
    --color-text: #f0e6de;
    --color-text-soft: #c9b8ad;
    --color-text-muted: #8a7a70;
    --color-border: rgba(224, 122, 95, 0.18);
    --color-shadow: rgba(0, 0, 0, 0.35);
    --color-shadow-strong: rgba(0, 0, 0, 0.5);
    --gradient-hero: linear-gradient(135deg, #2a1f1a 0%, #3a2820 45%, #5a3a2a 100%);
    --gradient-primary: linear-gradient(135deg, #e07a5f 0%, #f0b89c 100%);
    --gradient-soft: linear-gradient(135deg, rgba(224, 122, 95, 0.1) 0%, rgba(240, 184, 156, 0.08) 100%);
  }
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(200, 85, 61, 0.06) 0%, transparent 42%),
    radial-gradient(circle at 88% 22%, rgba(232, 168, 124, 0.08) 0%, transparent 38%),
    radial-gradient(circle at 50% 92%, rgba(168, 184, 122, 0.06) 0%, transparent 40%);
  background-attachment: fixed;
  transition: background-color var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  line-height: 1.35;
  color: var(--color-text);
  margin: 0 0 var(--space-sm);
  font-weight: 700;
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(1.6rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.35rem, 3vw, 1.9rem); }
h3 { font-size: clamp(1.1rem, 2.4vw, 1.35rem); }
h4 { font-size: 1.05rem; }

p {
  margin: 0 0 var(--space-sm);
  color: var(--color-text-soft);
}

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

li {
  margin-bottom: 0.4em;
}

time {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

blockquote {
  margin: var(--space-md) 0;
  padding: var(--space-md) var(--space-lg);
  background: var(--gradient-soft);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

blockquote:hover {
  transform: translateX(4px);
  box-shadow: 0 8px 28px var(--color-shadow);
}

blockquote p {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

blockquote footer {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-style: normal;
}

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

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

#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-surface-glass);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 20px rgba(122, 74, 58, 0.06);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  height: var(--header-height);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
  color: var(--color-text);
  font-weight: 700;
}

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

.brand:hover svg {
  transform: rotate(-8deg) scale(1.06);
  box-shadow: 0 6px 18px rgba(200, 85, 61, 0.35);
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  letter-spacing: 0.06em;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

#site-header nav {
  flex: 1;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-list::-webkit-scrollbar {
  display: none;
}

.nav-list li {
  margin: 0;
}

.nav-list a {
  display: block;
  padding: 0.45rem 0.7rem;
  font-size: 0.875rem;
  color: var(--color-text-soft);
  border-radius: var(--radius-pill);
  white-space: nowrap;
  position: relative;
  transition: color var(--transition-fast), background var(--transition-fast);
}

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

.nav-list a:hover,
.nav-list a[aria-current="page"] {
  color: var(--color-primary);
  background: rgba(200, 85, 61, 0.08);
}

.nav-list a:hover::after,
.nav-list a[aria-current="page"]::after {
  width: 60%;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.site-search {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

[data-theme="dark"] .site-search {
  background: rgba(42, 34, 29, 0.6);
}

.site-search:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(200, 85, 61, 0.15);
}

.site-search input {
  border: none;
  background: transparent;
  padding: 0.45rem 0.9rem;
  font-size: 0.85rem;
  color: var(--color-text);
  width: 150px;
  font-family: inherit;
  outline: none;
}

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

.site-search button {
  border: none;
  background: var(--gradient-primary);
  color: #fff;
  padding: 0.45rem 0.9rem;
  font-size: 0.85rem;
  font-family: inherit;
  cursor: pointer;
  transition: filter var(--transition-fast);
}

.site-search button:hover {
  filter: brightness(1.08);
}

#theme-toggle,
#menu-toggle {
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.5);
  color: var(--color-text-soft);
  padding: 0.45rem 0.85rem;
  font-size: 0.8rem;
  font-family: inherit;
  border-radius: var(--radius-pill);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

[data-theme="dark"] #theme-toggle,
[data-theme="dark"] #menu-toggle {
  background: rgba(42, 34, 29, 0.5);
}

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

#menu-toggle {
  display: none;
}

.breadcrumb {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-sm) var(--space-md) 0;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

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

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

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

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

.breadcrumb [aria-current="page"] {
  color: var(--color-primary);
  font-weight: 600;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md) var(--space-xl);
}

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--space-lg);
  align-items: center;
  margin: var(--space-md) 0 var(--space-lg);
  padding: var(--space-lg);
  border-radius: var(--radius-xl);
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px -20px var(--color-shadow-strong);
}

.hero::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -10%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.45) 0%, transparent 68%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -8%;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(200, 85, 61, 0.18) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

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

.hero-text h1 {
  margin-bottom: var(--space-sm);
  background: linear-gradient(120deg, var(--color-primary-dark) 0%, var(--color-primary) 55%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}

[data-theme="dark"] .hero-text h1 {
  background: linear-gradient(120deg, #f0b89c 0%, #e07a5f 55%, #c8553d 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--color-text-soft);
  margin-bottom: var(--space-md);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: var(--space-md);
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.6rem;
  font-size: 0.92rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  border: none;
  box-shadow: 0 8px 24px -6px rgba(200, 85, 61, 0.55);
}

.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.35) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform var(--transition-slow);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 14px 32px -8px rgba(200, 85, 61, 0.65);
}

.btn-primary:hover::after {
  transform: translateX(120%);
}

.btn-secondary {
  background: var(--color-surface-glass);
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 12px 28px -8px rgba(200, 85, 61, 0.5);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.hero-stats li {
  margin: 0;
  padding: 0.65rem 0.5rem;
  background: var(--color-surface-glass);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--radius-md);
  text-align: center;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

[data-theme="dark"] .hero-stats li {
  border-color: var(--color-border);
}

.hero-stats li:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 26px -8px var(--color-shadow-strong);
}

.hero-stats strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-primary);
  line-height: 1.2;
}

.hero-stats span {
  display: block;
  font-size: 0.72rem;
  color: var(--color-text-muted);
  margin-top: 0.15rem;
}

.hero-banner {
  position: relative;
  z-index: 1;
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 24px 48px -16px var(--color-shadow-strong);
  background: var(--color-surface);
}

.hero-banner .slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
  pointer-events: none;
}

.hero-banner .slide.active {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
  animation: slideIn var(--transition-slow) ease both;
}

@keyframes slideIn {
  from { opacity: 0; transform: scale(1.06); }
  to { opacity: 1; transform: scale(1); }
}

.hero-banner .slide svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.banner-dots {
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}

.banner-dots .dot {
  width: 10px;
  height: 10px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.55);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.banner-dots .dot.active {
  width: 26px;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
}

.banner-dots .dot:hover {
  background: var(--color-primary-light);
}

.anchor-nav {
  position: sticky;
  top: var(--header-height);
  z-index: 900;
  margin-bottom: var(--space-lg);
  padding: 0.5rem;
  background: var(--color-surface-glass);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  box-shadow: 0 6px 24px -10px var(--color-shadow);
}

.anchor-nav ul {
  display: flex;
  gap: 0.2rem;
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.anchor-nav ul::-webkit-scrollbar {
  display: none;
}

.anchor-nav li {
  margin: 0;
  flex-shrink: 0;
}

.anchor-nav a {
  display: block;
  padding: 0.35rem 0.8rem;
  font-size: 0.8rem;
  color: var(--color-text-soft);
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.anchor-nav a:hover {
  background: var(--gradient-primary);
  color: #fff;
  transform: translateY(-1px);
}

.content-section {
  margin-bottom: var(--space-lg);
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 6px 30px -14px var(--color-shadow);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
  position: relative;
  overflow: hidden;
}

.content-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.content-section:hover {
  box-shadow: 0 16px 48px -18px var(--color-shadow-strong);
}

.content-section:hover::before {
  opacity: 1;
}

.content-section h2 {
  position: relative;
  padding-bottom: 0.6rem;
  margin-bottom: var(--space-md);
}

.content-section h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 3px;
  border-radius: 3px;
  background: var(--gradient-primary);
}

.content-section h3 {
  margin-top: var(--space-md);
  color: var(--color-primary-dark);
}

[data-theme="dark"] .content-section h3 {
  color: var(--color-primary-light);
}

.content-section h4 {
  margin-top: var(--space-sm);
  color: var(--color-text);
}

.content-section article {
  padding: var(--space-md);
  margin-bottom: var(--space-sm);
  background: var(--gradient-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.content-section article:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 36px -14px var(--color-shadow-strong);
  border-color: var(--color-primary-light);
}

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

.content-section article a {
  display: inline-block;
  margin-top: 0.25rem;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius-pill);
  background: var(--gradient-primary);
  color: #fff;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.content-section article a:hover {
  color: #fff;
  transform: translateX(3px);
  box-shadow: 0 6px 18px -4px rgba(200, 85, 61, 0.5);
}

#products ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.75rem;
}

#products ul li {
  margin: 0;
  padding: 0.75rem 1rem 0.75rem 2.4rem;
  background: var(--gradient-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  position: relative;
  font-size: 0.92rem;
  color: var(--color-text-soft);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

#products ul li::before {
  content: "✓";
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: #fff;
  background: var(--gradient-primary);
  border-radius: 50%;
  font-weight: 700;
}

#products ul li:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 26px -10px var(--color-shadow-strong);
}

#howto ol {
  counter-reset: step;
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

#howto ol li {
  counter-increment: step;
  position: relative;
  padding: 0.85rem 1rem 0.85rem 3rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin: 0;
  color: var(--color-text-soft);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#howto ol li::before {
  content: counter(step);
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-primary);
  border-radius: 50%;
  box-shadow: 0 4px 10px -2px rgba(200, 85, 61, 0.5);
}

#howto ol li:hover {
  transform: translateX(4px);
  border-color: var(--color-primary-light);
  box-shadow: 0 8px 24px -10px var(--color-shadow-strong);
}

#faq details {
  margin-bottom: 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  overflow: hidden;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

#faq details[open] {
  border-color: var(--color-primary-light);
  box-shadow: 0 10px 30px -14px var(--color-shadow-strong);
}

#faq summary {
  cursor: pointer;
  padding: 0.9rem 1rem 0.9rem 2.6rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
  position: relative;
  list-style: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}

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

#faq summary::before {
  content: "+";
  position: absolute;
  left: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  background: rgba(200, 85, 61, 0.1);
  border-radius: 50%;
  transition: transform var(--transition-base), background var(--transition-base), color var(--transition-base);
}

#faq details[open] summary::before {
  content: "−";
  background: var(--gradient-primary);
  color: #fff;
  transform: translateY(-50%) rotate(180deg);
}

#faq summary:hover {
  background: var(--gradient-soft);
  color: var(--color-primary);
}

#faq details p {
  padding: 0 1rem 1rem 2.6rem;
  margin: 0;
  font-size: 0.92rem;
  animation: fadeUp var(--transition-base) ease both;
}

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

.contact-list,
.sitemap-list,
.friend-links {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.contact-list li {
  padding: 0.7rem 1rem;
  background: var(--gradient-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  color: var(--color-text-soft);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.contact-list li:hover {
  transform: translateX(4px);
  box-shadow: 0 8px 22px -10px var(--color-shadow-strong);
}

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

.sitemap-list li {
  margin: 0;
}

.sitemap-list a {
  display: block;
  padding: 0.55rem 0.9rem;
  font-size: 0.9rem;
  color: var(--color-text-soft);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  text-align: center;
  transition: all var(--transition-base);
}

.sitemap-list a:hover {
  background: var(--gradient-primary);
  color: #fff;
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 10px 24px -8px rgba(200, 85, 61, 0.5);
}

.friend-links {
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}

.friend-links li {
  margin: 0;
}

.friend-links a {
  display: block;
  padding: 0.7rem 1rem;
  font-size: 0.9rem;
  color: var(--color-text-soft);
  background: var(--gradient-soft);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  transition: all var(--transition-base);
}

.friend-links a:hover {
  border-style: solid;
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: 0 10px 24px -10px var(--color-shadow);
}

#site-footer {
  margin-top: var(--space-xl);
  padding: var(--space-xl) var(--space-md) var(--space-md);
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
  border-top: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

#site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: var(--space-lg);
}

#site-footer section {
  min-width: 0;
}

#site-footer h2 {
  font-size: 1.05rem;
  margin-bottom: var(--space-sm);
  color: var(--color-primary-dark);
  position: relative;
  padding-bottom: 0.4rem;
}

[data-theme="dark"] #site-footer h2 {
  color: var(--color-primary-light);
}

#site-footer h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 32px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

#site-footer p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 0.4rem;
}

#site-footer a {
  color: var(--color-text-soft);
  border-bottom: 1px dashed transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

#site-footer a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.copyright {
  max-width: var(--max-width);
  margin: var(--space-lg) auto 0;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

#back-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 950;
  padding: 0.7rem 1.1rem;
  font-size: 0.82rem;
  font-family: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  box-shadow: 0 10px 30px -8px rgba(200, 85, 61, 0.6);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all var(--transition-base);
}

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

#back-to-top:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 16px 40px -10px rgba(200, 85, 61, 0.7);
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

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

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

@media (max-width: 1024px) {
  .header-inner {
    gap: var(--space-sm);
  }
  .site-search input {
    width: 120px;
  }
  .nav-list a {
    padding: 0.4rem 0.55rem;
    font-size: 0.82rem;
  }
  .hero {
    grid-template-columns: 1fr;
    padding: var(--space-md);
  }
  .hero-banner {
    max-width: 560px;
    margin: 0 auto;
    width: 100%;
  }
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
  #site-footer section:first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 64px;
  }
  #site-header nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-surface-glass);
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    border-bottom: 1px solid var(--color-border);
    padding: 0.5rem var(--space-md) var(--space-md);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height var(--transition-slow), opacity var(--transition-base), visibility var(--transition-base);
    box-shadow: 0 20px 40px -20px var(--color-shadow-strong);
  }
  #site-header nav.open {
    max-height: 70vh;
    overflow-y: auto;
    opacity: 1;
    visibility: visible;
  }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    overflow: visible;
  }
  .nav-list a {
    padding: 0.7rem 1rem;
    font-size: 0.95rem;
    border-radius: var(--radius-md);
  }
  .nav-list a::after {
    display: none;
  }
  #menu-toggle {
    display: inline-flex;
  }
  .site-search {
    display: none;
  }
  .header-tools {
    margin-left: auto;
  }
  .anchor-nav {
    top: var(--header-height);
    border-radius: var(--radius-md);
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .content-section {
    padding: var(--space-md);
    border-radius: var(--radius-md);
  }
}

@media (max-width: 640px) {
  body {
    font-size: 0.95rem;
  }
  .header-inner {
    padding: 0 var(--space-sm);
  }
  .brand-name {
    font-size: 1rem;
  }
  .brand svg {
    width: 34px;
    height: 34px;
  }
  #theme-toggle {
    padding: 0.4rem 0.7rem;
    font-size: 0.75rem;
  }
  #menu-toggle {
    padding: 0.4rem 0.7rem;
    font-size: 0.75rem;
  }
  main {
    padding: 0 var(--space-sm) var(--space-lg);
  }
  .breadcrumb {
    padding: var(--space-xs) var(--space-sm) 0;
  }
  .hero {
    padding: var(--space-md) var(--space-sm);
    border-radius: var(--radius-lg);
    gap: var(--space-md);
  }
  .hero-actions {
    flex-direction: column;
  }
  .btn-primary,
  .btn-secondary {
    width: 100%;
    padding: 0.8rem 1.4rem;
  }
  .hero-stats {
    gap: 0.5rem;
  }
  .hero-stats strong {
    font-size: 1.1rem;
  }
  .hero-stats span {
    font-size: 0.68rem;
  }
  .content-section {
    padding: var(--space-sm);
    margin-bottom: var(--space-md);
  }
  .content-section h2 {
    font-size: 1.25rem;
  }
  .content-section article {
    padding: var(--space-sm);
  }
  #products ul {
    grid-template-columns: 1fr;
  }
  .sitemap-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .friend-links {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  blockquote {
    padding: var(--space-sm) var(--space-md);
  }
  #back-to-top {
    right: 0.85rem;
    bottom: 0.85rem;
    padding: 0.6rem 0.9rem;
    font-size: 0.75rem;
  }
}

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

@media print {
  #site-header,
  .anchor-nav,
  .breadcrumb,
  #back-to-top,
  .hero-banner,
  .banner-dots,
  #site-footer {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
  .content-section {
    box-shadow: none;
    border: 1px solid #ccc;
    break-inside: avoid;
  }
  a {
    color: #000;
    text-decoration: underline;
  }
}