:root {
  --brand-primary: #b8382a;
  --brand-secondary: #d98b3a;
  --brand-accent: #2b4a7d;
  --bg-body: #faf7f4;
  --bg-surface: #ffffff;
  --bg-surface-alt: #f3ede7;
  --bg-glass: rgba(255, 255, 255, 0.65);
  --bg-glass-strong: rgba(255, 255, 255, 0.85);
  --text-primary: #241c18;
  --text-secondary: #5c4f47;
  --text-muted: #8a7c72;
  --border-color: rgba(184, 56, 42, 0.14);
  --border-soft: rgba(36, 28, 24, 0.08);
  --shadow-sm: 0 2px 8px rgba(36, 28, 24, 0.06);
  --shadow-md: 0 8px 24px rgba(36, 28, 24, 0.09);
  --shadow-lg: 0 18px 48px rgba(36, 28, 24, 0.14);
  --gradient-hero: linear-gradient(135deg, #b8382a 0%, #d98b3a 52%, #e8b04b 100%);
  --gradient-brand: linear-gradient(120deg, #b8382a 0%, #d98b3a 100%);
  --gradient-accent: linear-gradient(135deg, #2b4a7d 0%, #4a6fa8 100%);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --font-base: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.36s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

html[data-theme="dark"],
body.dark-mode {
  --bg-body: #14100e;
  --bg-surface: #1e1815;
  --bg-surface-alt: #26201c;
  --bg-glass: rgba(30, 24, 21, 0.62);
  --bg-glass-strong: rgba(30, 24, 21, 0.86);
  --text-primary: #f3ece6;
  --text-secondary: #c4b6ac;
  --text-muted: #94857a;
  --border-color: rgba(217, 139, 58, 0.22);
  --border-soft: rgba(243, 236, 230, 0.08);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.6);
  --gradient-hero: linear-gradient(135deg, #7e2318 0%, #9c5a1f 52%, #b8862f 100%);
}

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

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

body {
  margin: 0;
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-primary);
  background-color: var(--bg-body);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(184, 56, 42, 0.06), transparent 42%),
    radial-gradient(circle at 88% 92%, rgba(217, 139, 58, 0.07), transparent 46%);
  background-attachment: fixed;
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
  overflow-x: hidden;
}

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

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--brand-secondary);
  outline-offset: 3px;
  border-radius: 4px;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.35;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 0.6em;
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(1.7rem, 4.2vw, 2.6rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: clamp(1.15rem, 2.2vw, 1.4rem); }
h4 { font-size: clamp(1.02rem, 1.8vw, 1.15rem); }

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

ul, ol {
  margin: 0 0 1em;
  padding-left: 1.25em;
  color: var(--text-secondary);
}

li {
  margin-bottom: 0.35em;
}

strong {
  color: var(--text-primary);
  font-weight: 700;
}

blockquote {
  margin: 1em 0;
  padding: 1em 1.25em;
  border-left: 4px solid var(--brand-secondary);
  background: var(--bg-surface-alt);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: normal;
}

blockquote p {
  margin: 0;
}

blockquote p::before {
  content: "\201C";
  color: var(--brand-secondary);
  font-weight: 700;
  margin-right: 2px;
}

blockquote p::after {
  content: "\201D";
  color: var(--brand-secondary);
  font-weight: 700;
  margin-left: 2px;
}

hr {
  border: none;
  height: 1px;
  background: var(--border-soft);
  margin: 2em 0;
}

/* ============================================
   HEADER
   ============================================ */
header[role="banner"] {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  padding: 0.85rem clamp(1rem, 4vw, 2.5rem);
  background: var(--bg-glass-strong);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
}

.brand-bar {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  margin-right: auto;
}

.brand-name {
  font-size: 1.2rem;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--brand-primary);
  letter-spacing: 0.02em;
}

.brand-domain {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

header nav[role="navigation"] {
  order: 3;
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

header nav[role="navigation"]::-webkit-scrollbar {
  display: none;
}

header nav[role="navigation"] ul {
  display: flex;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
  white-space: nowrap;
}

header nav[role="navigation"] a {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-pill);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

header nav[role="navigation"] a:hover,
header nav[role="navigation"] a:focus-visible {
  background: rgba(184, 56, 42, 0.1);
  color: var(--brand-primary);
  transform: translateY(-1px);
}

form[role="search"] {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  order: 4;
  width: 100%;
}

form[role="search"] label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

form[role="search"] input[type="search"] {
  flex: 1;
  min-width: 0;
  padding: 0.55rem 0.9rem;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

form[role="search"] input[type="search"]::placeholder {
  color: var(--text-muted);
}

form[role="search"] input[type="search"]:focus {
  border-color: var(--brand-secondary);
  box-shadow: 0 0 0 3px rgba(217, 139, 58, 0.18);
  outline: none;
}

form[role="search"] button {
  padding: 0.55rem 1.1rem;
  font-size: 0.9rem;
  font-family: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-brand);
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
}

form[role="search"] button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(184, 56, 42, 0.32);
  filter: brightness(1.05);
}

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

.theme-toggle {
  padding: 0.5rem 0.95rem;
  font-size: 0.82rem;
  font-family: inherit;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--brand-primary);
  color: #fff;
  border-color: var(--brand-primary);
  transform: translateY(-1px);
}

/* ============================================
   BREADCRUMB
   ============================================ */
nav[aria-label="面包屑导航"] {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.85rem clamp(1rem, 4vw, 2.5rem) 0;
}

nav[aria-label="面包屑导航"] 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(--text-muted);
}

nav[aria-label="面包屑导航"] li {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

nav[aria-label="面包屑导航"] li + li::before {
  content: "/";
  color: var(--text-muted);
  opacity: 0.6;
}

nav[aria-label="面包屑导航"] li[aria-current="page"] {
  color: var(--brand-primary);
  font-weight: 600;
}

/* ============================================
   MAIN LAYOUT
   ============================================ */
main {
  display: block;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2.5rem) 3rem;
}

main > section {
  margin: 2.5rem 0;
  padding: clamp(1.25rem, 3.5vw, 2.25rem);
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-smooth), transform var(--transition-smooth), border-color var(--transition-smooth);
  animation: fadeUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}

main > section:hover {
  box-shadow: var(--shadow-md);
}

main > section > h2 {
  position: relative;
  padding-bottom: 0.6rem;
  margin-bottom: 1.2rem;
}

main > section > h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 4px;
  border-radius: var(--radius-pill);
  background: var(--gradient-brand);
}

/* ============================================
   HERO
   ============================================ */
#hero {
  position: relative;
  margin-top: 1.5rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  background: var(--gradient-hero);
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  color: #fff;
  overflow: hidden;
}

#hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 22%, rgba(255, 255, 255, 0.22), transparent 38%),
    radial-gradient(circle at 82% 78%, rgba(255, 255, 255, 0.12), transparent 42%);
  pointer-events: none;
}

#hero > * {
  position: relative;
  z-index: 1;
}

#hero h1 {
  color: #fff;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.22);
}

#hero > p {
  color: rgba(255, 255, 255, 0.92);
  max-width: 62ch;
  font-size: clamp(0.95rem, 1.6vw, 1.05rem);
}

/* Banner rotator */
.hero-rotator {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 1.5rem 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
  background: rgba(0, 0, 0, 0.18);
}

.hero-rotator figure {
  grid-area: 1 / 1;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transform: scale(1.03);
  transition: opacity 0.9s ease, transform 1.2s ease, visibility 0.9s;
  animation: heroRotate 18s infinite;
}

.hero-rotator figure:nth-child(2) { animation-delay: 6s; }
.hero-rotator figure:nth-child(3) { animation-delay: 12s; }

.hero-rotator figure:first-child {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.hero-rotator img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 1;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.hero-rotator figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 1.4rem 1.25rem 0.85rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.62), transparent);
  letter-spacing: 0.02em;
}

@keyframes heroRotate {
  0% { opacity: 0; visibility: hidden; transform: scale(1.03); }
  4% { opacity: 1; visibility: visible; transform: scale(1); }
  29% { opacity: 1; visibility: visible; transform: scale(1); }
  33.33% { opacity: 0; visibility: hidden; transform: scale(1.03); }
  100% { opacity: 0; visibility: hidden; transform: scale(1.03); }
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.stats > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem 0.75rem;
  text-align: center;
  background: rgba(255, 255, 255, 0.16);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: var(--radius-md);
  transition: transform var(--transition-smooth), background var(--transition-smooth);
}

.stats > div:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.26);
}

.stats .counter {
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  letter-spacing: 0.02em;
}

.stats span {
  margin-top: 0.25rem;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.88);
}

/* ============================================
   ABOUT / PRODUCTS / SOLUTIONS
   ============================================ */
#about h3,
#products h3,
#solutions h3,
#cases h3,
#news h3,
#knowledge h3,
#howto h3,
#contact h3 {
  margin-top: 1.5rem;
  padding-left: 0.75rem;
  border-left: 4px solid var(--brand-secondary);
  color: var(--text-primary);
}

#about h3:first-of-type,
#products h3:first-of-type,
#solutions h3:first-of-type,
#cases h3:first-of-type,
#news h3:first-of-type,
#knowledge h3:first-of-type,
#howto h3:first-of-type,
#contact h3:first-of-type {
  margin-top: 0;
}

#products h4 {
  margin-top: 1.2rem;
  color: var(--brand-primary);
}

/* ============================================
   CASES
   ============================================ */
#cases blockquote {
  position: relative;
  padding: 1.1rem 1.25rem 1.1rem 1.5rem;
  background: var(--bg-surface-alt);
  border-left: 4px solid var(--brand-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

#cases blockquote:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

/* ============================================
   ARTICLES
   ============================================ */
#articles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

#articles > h2 {
  grid-column: 1 / -1;
}

#articles article {
  display: flex;
  flex-direction: column;
  padding: 1.25rem 1.35rem;
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth), background var(--transition-smooth);
}

#articles article:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-color);
  background: var(--bg-surface);
}

#articles article h3 {
  margin: 0 0 0.5rem;
  font-size: 1.08rem;
  line-height: 1.45;
}

#articles article h3 a {
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

#articles article h3 a:hover {
  color: var(--brand-primary);
}

#articles article p {
  font-size: 0.9rem;
  margin-bottom: 0.6rem;
}

#articles article p:first-of-type {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

#articles article p:last-of-type {
  margin-top: auto;
  margin-bottom: 0;
}

#articles article p:last-of-type a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-brand);
  border-radius: var(--radius-pill);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
}

#articles article p:last-of-type a::after {
  content: "\2192";
  transition: transform var(--transition-fast);
}

#articles article p:last-of-type a:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(184, 56, 42, 0.3);
  filter: brightness(1.06);
}

#articles article p:last-of-type a:hover::after {
  transform: translateX(3px);
}

/* ============================================
   FAQ
   ============================================ */
#faq details {
  margin-bottom: 0.75rem;
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

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

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

#faq summary {
  position: relative;
  padding: 1rem 3rem 1rem 1.25rem;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  transition: color var(--transition-fast), background var(--transition-fast);
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--brand-primary);
  background: rgba(184, 56, 42, 0.1);
  border-radius: 50%;
  transition: transform var(--transition-smooth), background var(--transition-fast), color var(--transition-fast);
}

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

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

#faq details p {
  margin: 0;
  padding: 0 1.25rem 1.1rem;
  font-size: 0.92rem;
  animation: fadeUp 0.4s ease both;
}

/* ============================================
   HOWTO
   ============================================ */
#howto h4 {
  position: relative;
  padding-left: 1.9rem;
  margin-top: 1.25rem;
  color: var(--text-primary);
}

#howto h4::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 50%;
  background: var(--gradient-brand);
  box-shadow: 0 0 0 3px rgba(184, 56, 42, 0.14);
}

#howto h4::after {
  content: "";
  position: absolute;
  left: 0.42rem;
  top: 0.62em;
  width: 0.32rem;
  height: 0.32rem;
  background: #fff;
  border-radius: 50%;
}

/* ============================================
   CONTACT
   ============================================ */
#contact p {
  margin-bottom: 0.5rem;
}

#contact p strong {
  color: var(--brand-primary);
}

/* ============================================
   SITEMAP & LINKS
   ============================================ */
#sitemap ul,
#links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

#sitemap li,
#links li {
  margin: 0;
}

#sitemap a,
#links a {
  display: inline-block;
  padding: 0.4rem 0.9rem;
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

#sitemap a:hover,
#links a:hover {
  color: #fff;
  background: var(--gradient-brand);
  border-color: transparent;
  transform: translateY(-2px);
}

/* ============================================
   FOOTER
   ============================================ */
footer[role="contentinfo"] {
  position: relative;
  margin-top: 3rem;
  padding: clamp(2rem, 4vw, 3rem) clamp(1rem, 4vw, 2.5rem) 2rem;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-soft);
  color: var(--text-secondary);
}

footer[role="contentinfo"] > section {
  max-width: var(--max-width);
  margin: 0 auto 1.5rem;
}

footer[role="contentinfo"] h2 {
  font-size: 1rem;
  color: var(--text-primary);
  padding-bottom: 0.4rem;
  margin-bottom: 0.7rem;
  border-bottom: 2px solid var(--border-soft);
}

footer[role="contentinfo"] p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

footer[role="contentinfo"] > p {
  max-width: var(--max-width);
  margin: 2rem auto 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-soft);
  font-size: 0.8rem;
  text-align: center;
  color: var(--text-muted);
}

/* Back to top */
.back-to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 90;
  padding: 0.7rem 1.1rem;
  font-size: 0.82rem;
  font-family: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-brand);
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), filter var(--transition-fast);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  filter: brightness(1.08);
}

.back-to-top:active {
  transform: translateY(-1px);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

main > section:nth-of-type(1) { animation-delay: 0.02s; }
main > section:nth-of-type(2) { animation-delay: 0.08s; }
main > section:nth-of-type(3) { animation-delay: 0.14s; }
main > section:nth-of-type(4) { animation-delay: 0.2s; }
main > section:nth-of-type(5) { animation-delay: 0.26s; }
main > section:nth-of-type(6) { animation-delay: 0.32s; }
main > section:nth-of-type(7) { animation-delay: 0.38s; }
main > section:nth-of-type(8) { animation-delay: 0.44s; }
main > section:nth-of-type(9) { animation-delay: 0.5s; }
main > section:nth-of-type(10) { animation-delay: 0.56s; }
main > section:nth-of-type(11) { animation-delay: 0.62s; }
main > section:nth-of-type(12) { animation-delay: 0.68s; }
main > section:nth-of-type(13) { animation-delay: 0.74s; }
main > section:nth-of-type(14) { animation-delay: 0.8s; }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .hero-rotator figure {
    animation: none;
  }
  .hero-rotator figure:first-child {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
}

/* ============================================
   RESPONSIVE — TABLET
   ============================================ */
@media (min-width: 640px) {
  .stats {
    grid-template-columns: repeat(4, 1fr);
  }

  #articles {
    grid-template-columns: repeat(2, 1fr);
  }

  form[role="search"] {
    order: 2;
    width: auto;
    flex: 0 1 320px;
  }

  .theme-toggle {
    order: 3;
  }

  header nav[role="navigation"] {
    order: 4;
  }
}

/* ============================================
   RESPONSIVE — DESKTOP
   ============================================ */
@media (min-width: 960px) {
  header[role="banner"] {
    flex-wrap: nowrap;
    padding: 0.9rem clamp(1.5rem, 4vw, 2.5rem);
  }

  header nav[role="navigation"] {
    order: 2;
    width: auto;
    flex: 1 1 auto;
    justify-content: center;
  }

  header nav[role="navigation"] ul {
    justify-content: center;
  }

  form[role="search"] {
    order: 3;
    flex: 0 1 260px;
  }

  .theme-toggle {
    order: 4;
  }

  .hero-rotator img {
    aspect-ratio: 3 / 1;
  }

  #articles {
    grid-template-columns: repeat(3, 1fr);
  }

  main > section {
    margin: 3rem 0;
  }
}

@media (min-width: 1200px) {
  #articles {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero-rotator {
    margin: 2rem 0;
  }
}

/* ============================================
   SMALL MOBILE TWEAKS
   ============================================ */
@media (max-width: 400px) {
  body {
    font-size: 15px;
  }

  .stats > div {
    padding: 0.8rem 0.5rem;
  }

  #faq summary {
    padding: 0.85rem 2.6rem 0.85rem 1rem;
    font-size: 0.92rem;
  }

  .back-to-top {
    padding: 0.6rem 0.9rem;
    font-size: 0.76rem;
  }
}

/* ============================================
   PRINT
   ============================================ */
@media print {
  header[role="banner"],
  .back-to-top,
  .theme-toggle,
  form[role="search"] {
    display: none !important;
  }

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

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

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