:root {
  --primary: #e63946;
  --primary-dark: #c1121f;
  --primary-light: #ff6b7a;
  --secondary: #457b9d;
  --secondary-dark: #2a5a7a;
  --accent: #2a9d8f;
  --accent-dark: #1e7a6f;
  --bg: #f8f9fb;
  --bg-alt: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --bg-glass-border: rgba(255, 255, 255, 0.45);
  --text: #1d1d2b;
  --text-secondary: #5a5a72;
  --text-muted: #8a8aa0;
  --border: #e4e6ef;
  --shadow-sm: 0 2px 8px rgba(29, 29, 43, 0.06);
  --shadow-md: 0 6px 24px rgba(29, 29, 43, 0.09);
  --shadow-lg: 0 16px 48px rgba(29, 29, 43, 0.14);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --transition: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --header-h: 68px;
  --gradient-hero: linear-gradient(135deg, #e63946 0%, #c1121f 40%, #6a0572 100%);
  --gradient-brand: linear-gradient(135deg, #e63946 0%, #f77f00 100%);
  --gradient-cool: linear-gradient(135deg, #457b9d 0%, #2a9d8f 100%);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

[data-theme="dark"] {
  --bg: #0f0f17;
  --bg-alt: #181824;
  --bg-glass: rgba(24, 24, 36, 0.78);
  --bg-glass-border: rgba(255, 255, 255, 0.08);
  --text: #ececf4;
  --text-secondary: #a8a8c0;
  --text-muted: #707088;
  --border: #2a2a3e;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.55);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

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

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

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

ul,
ol {
  list-style: none;
}

.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: 1000;
  height: var(--header-h);
  background: var(--bg-glass);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  border-bottom: 1px solid var(--bg-glass-border);
  transition: background var(--transition), box-shadow var(--transition);
}

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

.header-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 20px;
}

.logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: transform var(--transition);
}

.logo:hover {
  transform: scale(1.04);
}

.logo svg {
  width: 120px;
  height: 36px;
}

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

#main-nav ul {
  display: flex;
  gap: 4px;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}

#main-nav ul::-webkit-scrollbar {
  display: none;
}

#main-nav a {
  display: block;
  padding: 8px 14px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  position: relative;
  transition: color var(--transition), background var(--transition);
}

#main-nav a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

#main-nav a:hover {
  color: var(--primary);
  background: rgba(230, 57, 70, 0.06);
}

#main-nav a:hover::after {
  transform: scaleX(1);
}

#search-form {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

#search-input {
  width: 190px;
  padding: 9px 14px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 50px;
  outline: none;
  transition: width var(--transition), border-color var(--transition),
    box-shadow var(--transition);
}

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

#search-input:focus {
  width: 230px;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.14);
}

#search-form button {
  padding: 9px 18px;
  font-size: 14px;
  font-family: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-brand);
  border: none;
  border-radius: 50px;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--transition), box-shadow var(--transition),
    filter var(--transition);
}

#search-form button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(230, 57, 70, 0.35);
  filter: brightness(1.05);
}

#search-form button:active {
  transform: translateY(0);
}

#menu-toggle,
#theme-toggle {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 50%;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition),
    border-color var(--transition);
}

#theme-toggle {
  display: flex;
}

#menu-toggle:hover,
#theme-toggle:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: rotate(12deg) scale(1.08);
}

/* ===== Main layout ===== */
main {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px 80px;
}

section {
  margin-top: 64px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

section h2 {
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 24px;
  padding-left: 18px;
  position: relative;
  letter-spacing: -0.01em;
}

section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 5px;
  border-radius: 4px;
  background: var(--gradient-brand);
}

section h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 28px 0 12px;
  color: var(--text);
}

section h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 20px 0 8px;
  color: var(--primary);
}

section p {
  color: var(--text-secondary);
  margin-bottom: 14px;
  font-size: 15.5px;
}

section ul,
section ol {
  margin: 12px 0 20px;
  padding-left: 4px;
}

section ul li,
section ol li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 10px;
  color: var(--text-secondary);
  font-size: 15.5px;
  transition: transform var(--transition), color var(--transition);
}

section ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient-brand);
  box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.12);
}

section ol {
  counter-reset: step;
}

section ol li {
  counter-increment: step;
  padding-left: 40px;
}

section ol li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 1px;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-brand);
  border-radius: 50%;
}

section ul li:hover,
section ol li:hover {
  transform: translateX(4px);
  color: var(--text);
}

/* ===== Hero ===== */
#hero {
  margin-top: 0;
  padding: 56px 0 8px;
}

#hero h1 {
  font-size: clamp(1.7rem, 4.6vw, 2.9rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

#hero > p {
  max-width: 820px;
  font-size: 16.5px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.hero-carousel {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--bg-alt);
  isolation: isolate;
}

.hero-carousel::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0) 55%,
    rgba(0, 0, 0, 0.28) 100%
  );
  pointer-events: none;
  z-index: 2;
}

.hero-carousel .slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.06);
  transition: opacity 0.8s ease, transform 0.8s ease;
  z-index: 1;
}

.hero-carousel .slide.active {
  position: relative;
  opacity: 1;
  transform: scale(1);
  z-index: 3;
}

.hero-carousel .slide svg {
  width: 100%;
  height: auto;
  display: block;
  min-height: 200px;
  object-fit: cover;
}

/* ===== Stats ===== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 32px;
}

.stat {
  padding: 22px 16px;
  text-align: center;
  background: var(--bg-glass);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
}

.stat:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(230, 57, 70, 0.35);
}

.stat .num {
  display: block;
  font-size: clamp(1.6rem, 3.4vw, 2.2rem);
  font-weight: 900;
  line-height: 1.2;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.stat span:last-child {
  display: block;
  margin-top: 4px;
  font-size: 13.5px;
  color: var(--text-muted);
  font-weight: 500;
}

/* ===== Breadcrumb ===== */
nav[aria-label="面包屑导航"] {
  margin-top: 40px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--text-muted);
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb li + li::before {
  content: "›";
  color: var(--text-muted);
  font-size: 15px;
}

.breadcrumb a {
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: 50px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.breadcrumb a:hover {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
}

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

/* ===== Brand / content cards ===== */
#brand,
#products,
#solutions,
#cases,
#howto,
#contact,
#sitemap,
#links {
  padding: 32px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), border-color var(--transition);
}

#brand:hover,
#products:hover,
#solutions:hover,
#cases:hover,
#howto:hover,
#contact:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(230, 57, 70, 0.18);
}

#products ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px 24px;
}

#products ul li {
  padding: 12px 16px 12px 42px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

#products ul li::before {
  left: 16px;
  top: 20px;
}

#products ul li:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

/* ===== Cases / blockquote ===== */
blockquote {
  margin: 20px 0;
  padding: 20px 24px;
  background: linear-gradient(
    135deg,
    rgba(230, 57, 70, 0.06),
    rgba(69, 123, 157, 0.06)
  );
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  transition: transform var(--transition), box-shadow var(--transition);
}

blockquote:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
}

blockquote p {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  font-style: italic;
  color: var(--text-secondary);
}

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

blockquote p::before {
  content: "“";
  position: absolute;
  left: 0;
  top: -4px;
  font-size: 26px;
  font-weight: 900;
  color: var(--primary);
  opacity: 0.5;
  line-height: 1;
}

/* ===== Articles ===== */
#articles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 22px;
}

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

#articles article {
  display: flex;
  flex-direction: column;
  padding: 24px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
}

#articles article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

#articles article:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(230, 57, 70, 0.3);
}

#articles article:hover::before {
  transform: scaleX(1);
}

#articles article h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
  line-height: 1.45;
  color: var(--text);
  transition: color var(--transition);
}

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

#articles article p {
  font-size: 14px;
  margin-bottom: 10px;
  flex: 1;
}

#articles article p:first-of-type {
  font-size: 12.5px;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.01em;
}

#articles article a {
  align-self: flex-start;
  margin-top: 6px;
  padding: 8px 18px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(230, 57, 70, 0.08);
  border-radius: 50px;
  transition: all var(--transition);
}

#articles article a:hover {
  color: #fff;
  background: var(--gradient-brand);
  box-shadow: 0 6px 16px rgba(230, 57, 70, 0.32);
  transform: translateY(-2px);
}

/* ===== FAQ ===== */
#faq dl {
  display: grid;
  gap: 14px;
}

#faq dt {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text);
  padding: 16px 20px 16px 48px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  position: relative;
  cursor: pointer;
  transition: all var(--transition);
}

#faq dt::before {
  content: "Q";
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 900;
  color: #fff;
  background: var(--gradient-brand);
  border-radius: 50%;
}

#faq dt:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}

#faq dd {
  margin: -6px 0 0;
  padding: 16px 20px 16px 48px;
  font-size: 15px;
  color: var(--text-secondary);
  background: var(--bg);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  position: relative;
  transition: background var(--transition);
}

#faq dd::before {
  content: "A";
  position: absolute;
  left: 16px;
  top: 18px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 900;
  color: #fff;
  background: var(--gradient-cool);
  border-radius: 50%;
}

/* ===== Contact ===== */
#contact p {
  padding-left: 4px;
  font-size: 15.5px;
}

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

/* ===== Sitemap & Links ===== */
#sitemap ul,
#links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

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

#sitemap ul li::before,
#links ul li::before {
  display: none;
}

#sitemap a,
#links a {
  display: inline-block;
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50px;
  transition: all var(--transition);
}

#sitemap a:hover,
#links a:hover {
  color: #fff;
  background: var(--gradient-brand);
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(230, 57, 70, 0.28);
}

/* ===== Footer ===== */
footer {
  margin-top: 80px;
  padding: 56px 20px 40px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}

footer > section {
  max-width: 1240px;
  margin: 0 auto 28px;
  padding: 0;
  background: none;
  border: none;
  box-shadow: none;
}

footer > section h2 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  padding-left: 14px;
}

footer > section h2::before {
  width: 4px;
  top: 5px;
  bottom: 5px;
}

footer p {
  font-size: 14px;
  color: var(--text-muted);
  max-width: 900px;
}

footer > p {
  max-width: 1240px;
  margin: 0 auto;
  text-align: center;
}

footer > p a {
  display: inline-block;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-brand);
  border-radius: 50px;
  transition: all var(--transition);
}

footer > p a:hover {
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(230, 57, 70, 0.35);
}

/* ===== Scroll animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.8, 0.25, 1),
    transform 0.7s cubic-bezier(0.25, 0.8, 0.25, 1);
  will-change: opacity, transform;
}

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

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

@keyframes pulseGlow {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(230, 57, 70, 0.35);
  }
  50% {
    box-shadow: 0 0 0 10px rgba(230, 57, 70, 0);
  }
}

#hero h1,
#hero > p,
.hero-carousel,
.stats {
  animation: fadeInUp 0.7s cubic-bezier(0.25, 0.8, 0.25, 1) both;
}

#hero > p {
  animation-delay: 0.1s;
}

.hero-carousel {
  animation-delay: 0.2s;
}

.stats {
  animation-delay: 0.3s;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  #main-nav a {
    padding: 8px 10px;
    font-size: 14px;
  }

  #search-input {
    width: 150px;
  }

  #search-input:focus {
    width: 180px;
  }
}

@media (max-width: 900px) {
  .header-inner {
    gap: 12px;
  }

  #main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    max-height: 0;
    overflow: hidden;
    background: var(--bg-glass);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--bg-glass-border);
    transition: max-height 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    z-index: 999;
  }

  #main-nav.open {
    max-height: 420px;
    overflow-y: auto;
  }

  #main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 12px 20px 20px;
  }

  #main-nav a {
    padding: 13px 16px;
    font-size: 15.5px;
    border-radius: var(--radius-sm);
  }

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

  #menu-toggle {
    display: flex;
    order: 3;
  }

  #theme-toggle {
    order: 4;
  }

  #search-form {
    order: 2;
    margin-left: auto;
  }

  #search-input {
    width: 130px;
  }

  #search-input:focus {
    width: 160px;
  }

  #search-form button {
    padding: 9px 14px;
  }

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

@media (max-width: 640px) {
  :root {
    --header-h: 60px;
  }

  body {
    font-size: 15px;
  }

  .header-inner {
    padding: 0 14px;
    gap: 8px;
  }

  .logo svg {
    width: 100px;
    height: 30px;
  }

  #search-input {
    width: 0;
    padding: 9px 0;
    border-width: 0;
    opacity: 0;
    pointer-events: none;
  }

  #search-input:focus,
  #search-form:focus-within #search-input {
    width: 120px;
    padding: 9px 14px;
    border-width: 1px;
    opacity: 1;
    pointer-events: auto;
  }

  #search-form button {
    padding: 9px 12px;
    font-size: 13px;
  }

  #menu-toggle,
  #theme-toggle {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }

  main {
    padding: 0 14px 60px;
  }

  section {
    margin-top: 44px;
  }

  #hero {
    padding-top: 36px;
  }

  #hero h1 {
    font-size: 1.55rem;
  }

  #hero > p {
    font-size: 15px;
  }

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

  .hero-carousel .slide svg {
    min-height: 150px;
  }

  .stats {
    gap: 12px;
    margin-top: 22px;
  }

  .stat {
    padding: 16px 10px;
  }

  .stat .num {
    font-size: 1.5rem;
  }

  .stat span:last-child {
    font-size: 12px;
  }

  #brand,
  #products,
  #solutions,
  #cases,
  #howto,
  #contact,
  #sitemap,
  #links {
    padding: 22px 18px;
    border-radius: var(--radius-md);
  }

  section h2 {
    font-size: 1.35rem;
    margin-bottom: 18px;
    padding-left: 14px;
  }

  section h3 {
    font-size: 1.08rem;
  }

  section p,
  section ul li,
  section ol li {
    font-size: 14.5px;
  }

  #articles {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  #articles article {
    padding: 20px;
  }

  #products ul {
    grid-template-columns: 1fr;
  }

  #faq dt {
    font-size: 14.5px;
    padding: 14px 16px 14px 44px;
  }

  #faq dt::before,
  #faq dd::before {
    left: 12px;
    width: 22px;
    height: 22px;
    font-size: 11px;
  }

  #faq dd {
    font-size: 14px;
    padding: 14px 16px 14px 44px;
  }

  blockquote {
    padding: 16px 18px;
  }

  footer {
    padding: 40px 14px 32px;
  }

  #sitemap a,
  #links a {
    padding: 8px 14px;
    font-size: 13px;
  }
}

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

  #search-input:focus,
  #search-form:focus-within #search-input {
    width: 90px;
  }
}

/* ===== Accessibility & motion ===== */
@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;
  }
}

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

::selection {
  background: rgba(230, 57, 70, 0.22);
  color: var(--text);
}

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

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

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary), var(--secondary));
  border-radius: 10px;
  border: 2px solid var(--bg);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}