:root {
  --brand-900: #0f2e13;
  --brand-800: #1b5e20;
  --brand-700: #2e7d32;
  --brand-600: #388e3c;
  --brand-500: #4caf50;
  --brand-400: #81c784;
  --brand-300: #a5d6a7;
  --brand-200: #c8e6c9;
  --brand-100: #e8f5e9;
  --brand-50: #f1f8f2;

  --accent-600: #00796b;
  --accent-500: #009688;
  --accent-300: #4db6ac;

  --bg: #f6faf7;
  --bg-soft: #ffffff;
  --bg-elevated: rgba(255, 255, 255, 0.72);
  --bg-glass: rgba(255, 255, 255, 0.55);
  --bg-glass-strong: rgba(255, 255, 255, 0.82);

  --text: #1c2a1e;
  --text-soft: #455a48;
  --text-muted: #6b7f6e;
  --text-invert: #f4fbf5;

  --border: rgba(46, 125, 50, 0.16);
  --border-strong: rgba(46, 125, 50, 0.3);

  --shadow-sm: 0 2px 8px rgba(15, 46, 19, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 46, 19, 0.1);
  --shadow-lg: 0 18px 48px rgba(15, 46, 19, 0.16);
  --shadow-glow: 0 0 0 4px rgba(76, 175, 80, 0.18);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 999px;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --header-h: 72px;
  --maxw: 1200px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 0.32s;

  --grad-banner: linear-gradient(135deg, #1b5e20 0%, #2e7d32 38%, #43a047 68%, #009688 100%);
  --grad-banner-soft: linear-gradient(135deg, rgba(27, 94, 32, 0.92), rgba(0, 150, 136, 0.85));
  --grad-accent: linear-gradient(120deg, #2e7d32, #009688);
  --grad-text: linear-gradient(100deg, #1b5e20, #2e7d32 40%, #009688 100%);
}

[data-theme="dark"] {
  --bg: #0b1410;
  --bg-soft: #101c15;
  --bg-elevated: rgba(22, 38, 28, 0.72);
  --bg-glass: rgba(18, 32, 24, 0.55);
  --bg-glass-strong: rgba(20, 36, 26, 0.86);

  --text: #e6f2e8;
  --text-soft: #b9cdbd;
  --text-muted: #8aa38f;
  --text-invert: #0b1410;

  --border: rgba(129, 199, 132, 0.16);
  --border-strong: rgba(129, 199, 132, 0.32);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 10px 28px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 22px 56px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 0 4px rgba(76, 175, 80, 0.28);

  --grad-banner: linear-gradient(135deg, #0d2e14 0%, #17471d 40%, #1f5c2a 70%, #00564d 100%);
  --grad-banner-soft: linear-gradient(135deg, rgba(13, 46, 20, 0.94), rgba(0, 86, 77, 0.88));
  --grad-text: linear-gradient(100deg, #a5d6a7, #81c784 40%, #4db6ac 100%);
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  background-image:
    radial-gradient(1200px 600px at 100% -10%, rgba(76, 175, 80, 0.12), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(0, 150, 136, 0.1), transparent 55%);
  background-attachment: fixed;
  overflow-x: hidden;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

a {
  color: var(--brand-600);
  text-decoration: none;
  transition: color var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

[data-theme="dark"] a {
  color: var(--brand-300);
}

a:hover {
  color: var(--accent-600);
}

[data-theme="dark"] a:hover {
  color: var(--accent-300);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--brand-500);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

h1, h2, h3, h4 {
  line-height: 1.3;
  color: var(--text);
  letter-spacing: -0.01em;
  font-weight: 700;
}

h1 {
  font-size: clamp(1.7rem, 4.2vw, 2.7rem);
  margin: 0 0 var(--space-4);
}

h2 {
  font-size: clamp(1.35rem, 2.8vw, 1.9rem);
  margin: 0 0 var(--space-4);
  position: relative;
  padding-left: 1rem;
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  bottom: 0.18em;
  width: 6px;
  border-radius: var(--radius-pill);
  background: var(--grad-accent);
  box-shadow: 0 0 14px rgba(0, 150, 136, 0.45);
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  margin: var(--space-6) 0 var(--space-3);
  color: var(--text);
}

h3::after {
  content: "";
  display: block;
  width: 42px;
  height: 3px;
  margin-top: 0.5rem;
  border-radius: var(--radius-pill);
  background: var(--grad-accent);
  opacity: 0.7;
}

p {
  margin: 0 0 var(--space-4);
  color: var(--text-soft);
}

ul, ol {
  margin: 0 0 var(--space-4);
  padding-left: 1.35rem;
  color: var(--text-soft);
}

li {
  margin-bottom: var(--space-2);
}

li::marker {
  color: var(--brand-500);
}

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

blockquote {
  margin: 0 0 var(--space-5);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--bg-glass);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

blockquote::before {
  content: "\201C";
  position: absolute;
  top: -0.1em;
  left: 0.6rem;
  font-size: 4rem;
  line-height: 1;
  color: var(--brand-400);
  opacity: 0.35;
  font-family: Georgia, serif;
}

blockquote:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

blockquote p {
  position: relative;
  z-index: 1;
  font-size: 1.02rem;
  color: var(--text);
}

blockquote footer {
  margin-top: var(--space-3);
  font-size: 0.9rem;
  color: var(--text-muted);
  text-align: right;
}

time {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.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: 100;
  background: var(--bg-glass-strong);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  min-height: var(--header-h);
  padding: var(--space-3) var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.brand svg {
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(27, 94, 32, 0.35);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.brand:hover svg {
  transform: rotate(-6deg) scale(1.06);
  box-shadow: 0 10px 26px rgba(27, 94, 32, 0.5);
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.main-nav li {
  margin: 0;
}

.main-nav a {
  display: inline-block;
  padding: 0.42rem 0.7rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-soft);
  border-radius: var(--radius-pill);
  position: relative;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 0;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--grad-accent);
  transform: translateX(-50%);
  transition: width var(--dur) var(--ease);
}

.main-nav a:hover {
  color: var(--brand-700);
  background: rgba(76, 175, 80, 0.1);
  transform: translateY(-1px);
}

[data-theme="dark"] .main-nav a:hover {
  color: var(--brand-300);
  background: rgba(129, 199, 132, 0.12);
}

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

#site-header form[role="search"] {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
  flex: 1 1 220px;
  max-width: 340px;
}

#site-search {
  flex: 1;
  min-width: 0;
  padding: 0.55rem 0.95rem;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

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

#site-search:focus {
  outline: none;
  border-color: var(--brand-500);
  box-shadow: var(--shadow-glow);
}

#site-header form[role="search"] button {
  padding: 0.55rem 1rem;
  font-size: 0.88rem;
  font-weight: 600;
  font-family: inherit;
  color: #fff;
  background: var(--grad-accent);
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  white-space: nowrap;
  box-shadow: 0 6px 16px rgba(0, 150, 136, 0.3);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), filter var(--dur) var(--ease);
}

#site-header form[role="search"] button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0, 150, 136, 0.45);
  filter: brightness(1.06);
}

#site-header form[role="search"] button:active {
  transform: translateY(0);
}

#theme-toggle,
#mobile-menu-btn {
  padding: 0.5rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: inherit;
  color: var(--brand-700);
  background: var(--bg-glass);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-pill);
  cursor: pointer;
  white-space: nowrap;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

[data-theme="dark"] #theme-toggle,
[data-theme="dark"] #mobile-menu-btn {
  color: var(--brand-300);
}

#theme-toggle:hover,
#mobile-menu-btn:hover {
  background: var(--brand-100);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] #theme-toggle:hover,
[data-theme="dark"] #mobile-menu-btn:hover {
  background: rgba(129, 199, 132, 0.14);
}

#mobile-menu-btn {
  display: none;
}

.breadcrumb {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: var(--space-4) var(--space-5) 0;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb li {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--border-strong);
}

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

.breadcrumb a:hover {
  color: var(--brand-600);
}

.breadcrumb [aria-current="page"] {
  color: var(--brand-700);
  font-weight: 600;
}

[data-theme="dark"] .breadcrumb [aria-current="page"] {
  color: var(--brand-300);
}

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

main > section {
  padding: var(--space-7) 0;
  border-bottom: 1px solid var(--border);
}

main > section:last-child {
  border-bottom: none;
}

main > section > h2 {
  margin-top: 0;
}

#hero {
  padding: var(--space-6) 0 var(--space-7);
  border-bottom: none;
}

.carousel {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--brand-900);
  isolation: isolate;
}

.carousel::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 55%, rgba(0, 0, 0, 0.28));
  pointer-events: none;
  z-index: 1;
}

.slide {
  position: relative;
  display: none;
  animation: fadeSlide 0.6s var(--ease);
}

.slide:first-child,
.slide.is-active {
  display: block;
}

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

@keyframes fadeSlide {
  from {
    opacity: 0;
    transform: scale(1.02);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.carousel-dots {
  position: absolute;
  left: 50%;
  bottom: var(--space-4);
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-2);
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  z-index: 2;
}

.carousel-dots button {
  width: 30px;
  height: 30px;
  padding: 0;
  font-size: 0.78rem;
  font-weight: 700;
  font-family: inherit;
  color: #fff;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.carousel-dots button:hover {
  background: rgba(255, 255, 255, 0.4);
  transform: scale(1.1);
}

.carousel-dots button[aria-selected="true"] {
  background: #fff;
  color: var(--brand-800);
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.25);
}

.hero-text {
  margin-top: var(--space-6);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}

.hero-text h1 {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-lead {
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--text-soft);
}

.hero-meta {
  margin: 0;
  padding-top: var(--space-4);
  border-top: 1px dashed var(--border-strong);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.anchor-nav {
  position: sticky;
  top: var(--header-h);
  z-index: 50;
  margin: var(--space-4) 0 var(--space-2);
  padding: var(--space-2);
  border-radius: var(--radius-lg);
  background: var(--bg-glass-strong);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.anchor-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.anchor-nav li {
  margin: 0;
}

.anchor-nav a {
  display: inline-block;
  padding: 0.32rem 0.72rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-soft);
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  transition: all var(--dur) var(--ease);
}

.anchor-nav a:hover {
  color: var(--brand-700);
  background: var(--brand-100);
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

[data-theme="dark"] .anchor-nav a:hover {
  color: var(--brand-300);
  background: rgba(129, 199, 132, 0.14);
}

#products ul,
#services ul,
#howto ul,
#howto ol,
#contact ul,
#sitemap ul,
#links ul {
  padding-left: 0;
  list-style: none;
}

#products ul li,
#services ul li,
#howto ul li,
#contact ul li,
#sitemap ul li,
#links ul li {
  position: relative;
  padding: var(--space-3) var(--space-4) var(--space-3) calc(var(--space-4) + 1.4rem);
  margin-bottom: var(--space-2);
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

#products ul li::before,
#services ul li::before,
#howto ul li::before,
#contact ul li::before,
#sitemap ul li::before,
#links ul li::before {
  content: "";
  position: absolute;
  left: var(--space-4);
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--grad-accent);
  transform: translateY(-50%);
  box-shadow: 0 0 10px rgba(0, 150, 136, 0.5);
  transition: transform var(--dur) var(--ease);
}

#products ul li:hover,
#services ul li:hover,
#howto ul li:hover,
#contact ul li:hover,
#sitemap ul li:hover,
#links ul li:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
  border-color: var(--border-strong);
  background: var(--bg-glass-strong);
}

#products ul li:hover::before,
#services ul li:hover::before,
#howto ul li:hover::before,
#contact ul li:hover::before,
#sitemap ul li:hover::before,
#links ul li:hover::before {
  transform: translateY(-50%) scale(1.35);
}

#howto ol {
  counter-reset: howto-step;
}

#howto ol li {
  counter-increment: howto-step;
  padding-left: calc(var(--space-4) + 2.4rem);
}

#howto ol li::before {
  content: counter(howto-step);
  left: var(--space-3);
  top: 50%;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
  background: var(--grad-accent);
  transform: translateY(-50%);
  box-shadow: 0 4px 12px rgba(0, 150, 136, 0.4);
}

#howto ol li:hover::before {
  transform: translateY(-50%) scale(1.12);
}

#articles article {
  margin-bottom: var(--space-5);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--bg-glass);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

#articles article::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--grad-accent);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}

#articles article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

#articles article:hover::before {
  opacity: 1;
}

#articles article h3 {
  margin-top: 0;
}

#articles article h3::after {
  display: none;
}

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-pill);
  background: rgba(76, 175, 80, 0.12);
  transition: background-color var(--dur) var(--ease), transform var(--dur) var(--ease), gap var(--dur) var(--ease);
}

#articles article a::after {
  content: "\2192";
  transition: transform var(--dur) var(--ease);
}

#articles article a:hover {
  background: rgba(0, 150, 136, 0.18);
  gap: 0.6rem;
}

#articles article a:hover::after {
  transform: translateX(3px);
}

#news article {
  margin-bottom: var(--space-4);
  padding: var(--space-5);
  border-radius: var(--radius-md);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-left: 4px solid var(--brand-500);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

#news article:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-left-color: var(--accent-500);
}

#news article h3 {
  margin-top: 0;
}

#news article h3::after {
  display: none;
}

#news article p:last-child {
  margin-bottom: 0;
}

#faq details {
  margin-bottom: var(--space-3);
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}

#faq details:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

#faq details[open] {
  border-color: var(--brand-400);
  box-shadow: var(--shadow-md);
}

#faq summary {
  position: relative;
  padding: var(--space-4) calc(var(--space-4) + 2rem) var(--space-4) var(--space-5);
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  background: var(--grad-accent);
  border-radius: 50%;
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

#faq details[open] summary {
  background: rgba(76, 175, 80, 0.08);
  color: var(--brand-700);
}

[data-theme="dark"] #faq details[open] summary {
  color: var(--brand-300);
}

#faq details[open] summary::after {
  content: "\2212";
  transform: translateY(-50%) rotate(180deg);
}

#faq details p {
  padding: 0 var(--space-5) var(--space-4);
  margin: 0;
  font-size: 0.94rem;
  animation: fadeIn 0.4s var(--ease);
}

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

#reviews blockquote {
  margin-bottom: var(--space-4);
}

#contact a[href^="mailto"],
#contact a[href^="https"] {
  font-weight: 600;
  border-bottom: 1px dashed var(--border-strong);
  padding-bottom: 1px;
}

#contact a[href^="mailto"]:hover,
#contact a[href^="https"]:hover {
  border-bottom-color: var(--accent-500);
}

#links ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-3);
}

#links ul li {
  margin-bottom: 0;
}

#links p {
  margin-top: var(--space-4);
  font-size: 0.88rem;
  color: var(--text-muted);
}

#sitemap ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-2);
}

#sitemap ul li {
  margin-bottom: 0;
  font-size: 0.9rem;
}

footer {
  margin-top: var(--space-7);
  background: var(--grad-banner-soft);
  color: var(--text-invert);
  border-top: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 300px at 10% 0%, rgba(255, 255, 255, 0.12), transparent 60%),
    radial-gradient(500px 260px at 90% 100%, rgba(0, 0, 0, 0.18), transparent 60%);
  pointer-events: none;
}

.footer-inner {
  position: relative;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: var(--space-7) var(--space-5);
  text-align: center;
}

.footer-inner p {
  margin: 0 0 var(--space-3);
  color: rgba(255, 255, 255, 0.86);
  font-size: 0.88rem;
}

.footer-inner p:last-child {
  margin-bottom: 0;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.68);
}

.footer-inner a {
  color: #fff;
  font-weight: 500;
  border-bottom: 1px solid rgba(255, 255, 255, 0.35);
  padding-bottom: 1px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.footer-inner a:hover {
  color: var(--brand-200);
  border-bottom-color: var(--brand-200);
}

#back-to-top {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  z-index: 90;
  padding: 0.7rem 1.1rem;
  font-size: 0.82rem;
  font-weight: 600;
  font-family: inherit;
  color: #fff;
  background: var(--grad-accent);
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

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

#back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

#back-to-top:active {
  transform: translateY(0);
}

main > section,
#hero,
.carousel,
.hero-text {
  animation: riseIn 0.7s var(--ease) both;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

@media (max-width: 1080px) {
  #site-header form[role="search"] {
    order: 5;
    flex-basis: 100%;
    max-width: none;
    margin-left: 0;
  }
}

@media (max-width: 900px) {
  .header-inner {
    padding: var(--space-3) var(--space-4);
    gap: var(--space-3);
  }

  .main-nav {
    order: 6;
    flex-basis: 100%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
    padding: var(--space-2) 0;
    border-top: 1px solid var(--border);
  }

  .main-nav.is-open {
    display: flex;
    animation: fadeIn 0.3s var(--ease);
  }

  .main-nav a {
    display: block;
    padding: 0.6rem 0.9rem;
    border-radius: var(--radius-md);
  }

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

  #mobile-menu-btn {
    display: inline-block;
    margin-left: auto;
  }

  #theme-toggle {
    order: 4;
  }

  #site-header form[role="search"] {
    order: 5;
  }

  main {
    padding: 0 var(--space-4);
  }

  .breadcrumb {
    padding: var(--space-3) var(--space-4) 0;
  }

  .anchor-nav {
    top: calc(var(--header-h) - 8px);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .anchor-nav ul {
    flex-wrap: nowrap;
  }

  .anchor-nav a {
    white-space: nowrap;
  }

  .hero-text {
    padding: var(--space-5);
  }
}

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

  .brand-name {
    font-size: 1rem;
  }

  .brand svg {
    width: 34px;
    height: 34px;
  }

  h2 {
    padding-left: 0.85rem;
  }

  h2::before {
    width: 5px;
  }

  main > section {
    padding: var(--space-6) 0;
  }

  #hero {
    padding: var(--space-4) 0 var(--space-6);
  }

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

  .hero-text {
    margin-top: var(--space-4);
    padding: var(--space-4);
    border-radius: var(--radius-md);
  }

  .hero-lead {
    font-size: 0.95rem;
  }

  .hero-meta {
    font-size: 0.78rem;
  }

  .carousel-dots {
    bottom: var(--space-2);
    gap: var(--space-1);
    padding: 0.3rem 0.45rem;
  }

  .carousel-dots button {
    width: 26px;
    height: 26px;
    font-size: 0.72rem;
  }

  #articles article,
  #news article,
  blockquote,
  #faq summary {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  #faq summary {
    padding-right: calc(var(--space-4) + 1.8rem);
    font-size: 0.92rem;
  }

  #faq details p {
    padding: 0 var(--space-4) var(--space-4);
  }

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

  #back-to-top {
    right: var(--space-3);
    bottom: var(--space-3);
    padding: 0.6rem 0.9rem;
    font-size: 0.78rem;
  }

  .footer-inner {
    padding: var(--space-6) var(--space-4);
  }
}

@media (max-width: 380px) {
  .header-inner {
    gap: var(--space-2);
  }

  #theme-toggle,
  #mobile-menu-btn {
    padding: 0.45rem 0.7rem;
    font-size: 0.78rem;
  }

  .brand-name {
    font-size: 0.92rem;
  }
}

@media (hover: none) {
  #products ul li:hover,
  #services ul li:hover,
  #howto ul li:hover,
  #contact ul li:hover,
  #sitemap ul li:hover,
  #links ul li:hover,
  #articles article:hover,
  #news article:hover,
  blockquote:hover {
    transform: none;
  }
}

@media print {
  #site-header,
  .anchor-nav,
  #back-to-top,
  .carousel-dots,
  footer {
    display: none !important;
  }

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

  main {
    max-width: none;
    padding: 0;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  main > section {
    page-break-inside: avoid;
  }
}