:root {
  --primary: #ff9ec4;
  --primary-dark: #f2789f;
  --primary-light: #ffc4dc;
  --secondary: #a8d8ff;
  --secondary-dark: #7bb8e8;
  --accent: #ffd98e;
  --accent-soft: #fff0d0;
  --mint: #b8f0d8;
  --text-main: #3a2e35;
  --text-sub: #6b5d66;
  --text-muted: #9a8d95;
  --bg-body: #fff7fa;
  --bg-card: #ffffff;
  --bg-soft: #fff0f5;
  --bg-glass: rgba(255, 255, 255, 0.65);
  --border-soft: rgba(255, 158, 196, 0.25);
  --shadow-sm: 0 2px 8px rgba(255, 158, 196, 0.12);
  --shadow-md: 0 8px 24px rgba(255, 158, 196, 0.18);
  --shadow-lg: 0 16px 48px rgba(255, 158, 196, 0.22);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 999px;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1180px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary: #ff8fb8;
    --primary-dark: #ff6fa3;
    --primary-light: #5a3a48;
    --secondary: #6fa8d8;
    --secondary-dark: #4d8ac0;
    --accent: #e0b860;
    --accent-soft: #4a3f28;
    --mint: #6fc9a8;
    --text-main: #f2e8ee;
    --text-sub: #c4b6bf;
    --text-muted: #8e8088;
    --bg-body: #1a1418;
    --bg-card: #251d22;
    --bg-soft: #2e2329;
    --bg-glass: rgba(37, 29, 34, 0.7);
    --border-soft: rgba(255, 143, 184, 0.2);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  }
}

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

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

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background-color: var(--bg-body);
  background-image:
    radial-gradient(circle at 10% 0%, rgba(255, 158, 196, 0.10) 0%, transparent 40%),
    radial-gradient(circle at 90% 15%, rgba(168, 216, 255, 0.10) 0%, transparent 40%),
    radial-gradient(circle at 50% 100%, rgba(255, 217, 142, 0.08) 0%, transparent 45%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
}

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

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

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

ul,
ol {
  list-style: none;
}

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

h1 {
  font-size: clamp(1.6rem, 4vw, 2.6rem);
}

h2 {
  font-size: clamp(1.35rem, 3vw, 2rem);
}

h3 {
  font-size: clamp(1.1rem, 2.2vw, 1.4rem);
}

h4 {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
}

p {
  color: var(--text-sub);
  margin-bottom: 1em;
}

::selection {
  background: var(--primary-light);
  color: var(--text-main);
}

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

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

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

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--primary-dark), var(--secondary-dark));
}

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

/* ============ Header ============ */
header[role="banner"] {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition), box-shadow var(--transition);
}

header[role="banner"] > div {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

header[role="banner"] > div > a[aria-label] {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  background: linear-gradient(120deg, var(--primary-dark), var(--secondary-dark) 60%, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  white-space: nowrap;
  position: relative;
  padding-left: 2rem;
}

header[role="banner"] > div > a[aria-label]::before {
  content: "🐱";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3rem;
  -webkit-text-fill-color: initial;
  color: initial;
  transition: transform var(--transition);
}

header[role="banner"] > div > a[aria-label]:hover::before {
  transform: translateY(-50%) rotate(-12deg) scale(1.15);
}

header nav[aria-label="主导航"] ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  align-items: center;
}

header nav[aria-label="主导航"] ul li a {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-sub);
  border-radius: var(--radius-pill);
  position: relative;
  transition: color var(--transition), background var(--transition), transform var(--transition);
}

header nav[aria-label="主导航"] ul li a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: var(--radius-pill);
  transform: translateX(-50%);
  transition: width var(--transition);
}

header nav[aria-label="主导航"] ul li a:hover {
  color: var(--primary-dark);
  background: var(--bg-soft);
  transform: translateY(-2px);
}

header nav[aria-label="主导航"] ul li a:hover::after {
  width: 60%;
}

/* ============ Main & Breadcrumb ============ */
main {
  display: block;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
}

main > nav[aria-label="面包屑导航"] {
  padding: 1.25rem 0 0.5rem;
}

main > nav[aria-label="面包屑导航"] ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

main > nav[aria-label="面包屑导航"] ol li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

main > nav[aria-label="面包屑导航"] ol li + li::before {
  content: "›";
  color: var(--primary);
  font-weight: 700;
}

main > nav[aria-label="面包屑导航"] ol li a {
  color: var(--text-sub);
}

main > nav[aria-label="面包屑导航"] ol li a:hover {
  color: var(--primary-dark);
}

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

/* ============ Sections Base ============ */
main > section {
  margin-top: 2.5rem;
  padding: 2.5rem clamp(1.25rem, 4vw, 3rem);
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition), background var(--transition);
}

main > section::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -20%;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(255, 158, 196, 0.10) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

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

main > section > h2 {
  position: relative;
  padding-bottom: 0.75rem;
  margin-bottom: 1.25rem;
}

main > section > h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 4px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}

main > section h3 {
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
  color: var(--text-main);
  position: relative;
  padding-left: 0.9rem;
}

main > section h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2em;
  bottom: 0.2em;
  width: 4px;
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, var(--primary), var(--secondary));
}

main > section h4 {
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--primary-dark);
}

main > section ul,
main > section ol {
  margin: 0.5rem 0 1rem;
  padding-left: 0;
}

main > section ul li,
main > section ol li {
  position: relative;
  padding: 0.35rem 0 0.35rem 1.6rem;
  color: var(--text-sub);
  line-height: 1.7;
}

main > section ul li::before {
  content: "";
  position: absolute;
  left: 0.25rem;
  top: 0.95em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 0 0 3px rgba(255, 158, 196, 0.15);
}

main > section ol {
  counter-reset: step-counter;
}

main > section ol li {
  counter-increment: step-counter;
  padding-left: 2.2rem;
}

main > section ol li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 0.4rem;
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--secondary-dark));
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
}

main > section strong {
  color: var(--primary-dark);
  font-weight: 700;
}

/* ============ Hero ============ */
#hero {
  margin-top: 1.5rem;
  padding: clamp(2rem, 6vw, 4rem) clamp(1.25rem, 4vw, 3rem);
  background:
    linear-gradient(135deg, rgba(255, 158, 196, 0.18) 0%, rgba(168, 216, 255, 0.18) 50%, rgba(255, 217, 142, 0.18) 100%),
    var(--bg-card);
  border-radius: var(--radius-xl);
  text-align: center;
  overflow: hidden;
}

#hero::before {
  content: "";
  position: absolute;
  top: -120px;
  left: -80px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(168, 216, 255, 0.35) 0%, transparent 70%);
  border-radius: 50%;
  animation: floatBlob 12s ease-in-out infinite;
}

#hero::after {
  content: "";
  position: absolute;
  bottom: -140px;
  right: -80px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(255, 217, 142, 0.30) 0%, transparent 70%);
  border-radius: 50%;
  animation: floatBlob 15s ease-in-out infinite reverse;
}

@keyframes floatBlob {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, 20px) scale(1.1); }
}

#hero h1 {
  position: relative;
  z-index: 1;
  background: linear-gradient(120deg, var(--primary-dark), var(--secondary-dark) 50%, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-bottom: 1.25rem;
  animation: fadeUp 0.8s ease both;
}

#hero p {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto 1rem;
  font-size: clamp(0.95rem, 1.6vw, 1.05rem);
  color: var(--text-sub);
  animation: fadeUp 0.8s ease 0.1s both;
}

#hero > div {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.75rem;
  animation: fadeUp 0.8s ease 0.2s both;
}

#hero > div a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  position: relative;
  overflow: hidden;
}

#hero > div a:first-child {
  color: #fff;
  background: linear-gradient(120deg, var(--primary), var(--primary-dark) 50%, var(--secondary-dark));
  background-size: 200% 200%;
  box-shadow: var(--shadow-md);
}

#hero > div a:first-child:hover {
  background-position: 100% 50%;
  transform: translateY(-3px) scale(1.03);
  box-shadow: var(--shadow-lg);
  color: #fff;
}

#hero > div a:last-child {
  color: var(--primary-dark);
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 2px solid var(--primary-light);
}

#hero > div a:last-child:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-3px) scale(1.03);
  box-shadow: var(--shadow-md);
}

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

/* ============ About ============ */
#about ul li strong {
  display: inline-block;
  min-width: 4.5em;
}

/* ============ Products ============ */
#products h4 {
  position: relative;
  padding: 1rem 1.25rem;
  background: var(--bg-soft);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--primary);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

#products h4:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
  background: linear-gradient(90deg, var(--bg-soft), transparent);
}

#products > ul li {
  padding: 0.75rem 1rem 0.75rem 2.4rem;
  background: var(--bg-soft);
  border-radius: var(--radius-md);
  margin-bottom: 0.6rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

#products > ul li::before {
  left: 1rem;
  top: 1.35rem;
}

#products > ul li:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

/* ============ Solutions ============ */
#solutions h3 {
  padding: 1rem 1.25rem 1rem 1.75rem;
  background: linear-gradient(120deg, var(--bg-soft), transparent);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  transition: transform var(--transition), box-shadow var(--transition);
}

#solutions h3:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* ============ Cases ============ */
#cases blockquote {
  position: relative;
  margin: 1rem 0;
  padding: 1.5rem 1.75rem 1.5rem 3.25rem;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

#cases blockquote::before {
  content: "“";
  position: absolute;
  left: 0.75rem;
  top: 0.25rem;
  font-size: 3rem;
  line-height: 1;
  font-family: Georgia, serif;
  color: var(--primary);
  opacity: 0.7;
}

#cases blockquote p {
  margin: 0;
  color: var(--text-sub);
  font-style: italic;
}

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

/* ============ News ============ */
#news > ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

#news > ul > li {
  padding: 1.5rem !important;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

#news > ul > li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

#news > ul > li:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

#news > ul > li:hover::before {
  transform: scaleX(1);
}

#news > ul > li h3 {
  margin-top: 0;
  padding-left: 0;
  font-size: 1.05rem;
  line-height: 1.5;
}

#news > ul > li h3::before {
  display: none;
}

#news > ul > li p:first-of-type {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary-dark);
  background: var(--bg-soft);
  padding: 0.15rem 0.7rem;
  border-radius: var(--radius-pill);
  margin: 0.25rem 0 0.75rem;
}

#news > ul > li p:last-child {
  margin-bottom: 0;
  font-size: 0.92rem;
}

/* ============ Articles ============ */
#articles {
  background: linear-gradient(180deg, var(--bg-card), var(--bg-soft));
}

#articles > article {
  padding: 1.5rem;
  margin-bottom: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
}

#articles > article::after {
  content: "→";
  position: absolute;
  right: 1.5rem;
  bottom: 1.5rem;
  font-size: 1.2rem;
  color: var(--primary);
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity var(--transition), transform var(--transition);
}

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

#articles > article:hover::after {
  opacity: 1;
  transform: translateX(0);
}

#articles > article h3 {
  margin-top: 0;
  padding-left: 0;
  font-size: 1.1rem;
}

#articles > article h3::before {
  display: none;
}

#articles > article p:first-of-type {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg-soft);
  padding: 0.1rem 0.6rem;
  border-radius: var(--radius-pill);
  margin-bottom: 0.6rem;
}

#articles > article a {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-dark);
  padding: 0.35rem 1rem;
  border-radius: var(--radius-pill);
  background: var(--bg-soft);
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

#articles > article a:hover {
  background: var(--primary);
  color: #fff;
  transform: translateX(4px);
}

/* ============ FAQ ============ */
#faq h3 {
  padding: 1rem 1.25rem;
  background: var(--bg-soft);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  border-left: 4px solid var(--primary);
  margin-bottom: 0;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

#faq h3:hover {
  background: linear-gradient(90deg, var(--primary-light), var(--bg-soft));
  color: var(--primary-dark);
}

#faq h3 + p {
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

/* ============ HowTo ============ */
#howto {
  background:
    linear-gradient(135deg, rgba(168, 216, 255, 0.08), rgba(184, 240, 216, 0.08)),
    var(--bg-card);
}

#howto ol li {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

#howto ol li strong {
  color: var(--secondary-dark);
}

/* ============ Contact ============ */
#contact > ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.75rem;
  margin-top: 1.25rem;
}

#contact > ul li {
  padding: 1rem 1.25rem !important;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition);
}

#contact > ul li::before {
  display: none;
}

#contact > ul li:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

#contact > ul li strong {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 0.15rem;
}

/* ============ Sitemap & Links ============ */
#sitemap > ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

#sitemap > ul li {
  padding: 0 !important;
}

#sitemap > ul li::before {
  display: none;
}

#sitemap > ul li a {
  display: inline-block;
  padding: 0.45rem 1.1rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-sub);
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
}

#sitemap > ul li a:hover {
  color: #fff;
  background: linear-gradient(120deg, var(--primary), var(--secondary-dark));
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

#links > ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

#links > ul li {
  padding: 0 !important;
}

#links > ul li::before {
  display: none;
}

#links > ul li a {
  display: inline-block;
  padding: 0.4rem 1rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  border: 1px dashed var(--border-soft);
  border-radius: var(--radius-pill);
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

#links > ul li a:hover {
  color: var(--primary-dark);
  border-color: var(--primary);
  background: var(--bg-soft);
}

/* ============ Footer ============ */
footer[role="contentinfo"] {
  margin-top: 3rem;
  padding: 3rem 1.5rem 2rem;
  background:
    linear-gradient(180deg, transparent, rgba(255, 158, 196, 0.06)),
    var(--bg-soft);
  border-top: 1px solid var(--border-soft);
  position: relative;
}

footer[role="contentinfo"]::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent), var(--mint));
  background-size: 300% 100%;
  animation: gradientShift 8s linear infinite;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

footer[role="contentinfo"] > section {
  max-width: var(--max-width);
  margin: 0 auto 2rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

footer[role="contentinfo"] > section:hover {
  box-shadow: var(--shadow-md);
}

footer[role="contentinfo"] > section h2 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: var(--primary-dark);
  position: relative;
  padding-left: 0.9rem;
}

footer[role="contentinfo"] > section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2em;
  bottom: 0.2em;
  width: 4px;
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, var(--primary), var(--secondary));
}

footer[role="contentinfo"] > section h3 {
  font-size: 0.95rem;
  margin: 1rem 0 0.4rem;
  color: var(--text-main);
}

footer[role="contentinfo"] > section p {
  font-size: 0.88rem;
  margin-bottom: 0.6rem;
}

footer[role="contentinfo"] > section ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.5rem;
}

footer[role="contentinfo"] > section ul li {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 0.35rem 0 0.35rem 1.4rem;
  position: relative;
}

footer[role="contentinfo"] > section ul li::before {
  content: "";
  position: absolute;
  left: 0.2rem;
  top: 0.95em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary-light);
}

footer[role="contentinfo"] > p {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px dashed var(--border-soft);
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ============ Scroll Reveal Animation ============ */
@supports (animation-timeline: view()) {
  main > section {
    animation: revealSection linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 25%;
  }

  @keyframes revealSection {
    from {
      opacity: 0;
      transform: translateY(40px) scale(0.98);
    }
    to {
      opacity: 1;
      transform: translateY(0) scale(1);
    }
  }
}

@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;
  }
}

/* ============ Responsive ============ */
@media (max-width: 900px) {
  header[role="banner"] > div {
    padding: 0.6rem 1rem;
    gap: 0.75rem;
  }

  header nav[aria-label="主导航"] ul {
    gap: 0.15rem;
  }

  header nav[aria-label="主导航"] ul li a {
    padding: 0.35rem 0.6rem;
    font-size: 0.82rem;
  }

  main {
    padding: 0 1rem 2rem;
  }

  main > section {
    margin-top: 1.75rem;
    padding: 1.75rem 1.25rem;
    border-radius: var(--radius-md);
  }

  #hero {
    border-radius: var(--radius-lg);
  }

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

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

  footer[role="contentinfo"] > section ul {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  body {
    font-size: 15px;
  }

  header[role="banner"] > div {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  header[role="banner"] > div > a[aria-label] {
    font-size: 1.2rem;
  }

  header nav[aria-label="主导航"] {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  header nav[aria-label="主导航"]::-webkit-scrollbar {
    display: none;
  }

  header nav[aria-label="主导航"] ul {
    flex-wrap: nowrap;
    padding-bottom: 0.15rem;
  }

  header nav[aria-label="主导航"] ul li a {
    white-space: nowrap;
  }

  main > section {
    padding: 1.5rem 1rem;
  }

  #hero {
    padding: 2rem 1rem;
  }

  #hero > div {
    flex-direction: column;
    align-items: stretch;
  }

  #hero > div a {
    width: 100%;
  }

  main > section h3 {
    margin-top: 1.25rem;
  }

  #faq h3 {
    padding: 0.85rem 1rem;
    font-size: 1rem;
  }

  #faq h3 + p {
    padding: 0.85rem 1rem;
    font-size: 0.9rem;
  }

  footer[role="contentinfo"] {
    padding: 2rem 1rem 1.5rem;
  }

  footer[role="contentinfo"] > section {
    padding: 1.15rem;
  }

  footer[role="contentinfo"] > section ul {
    grid-template-columns: 1fr;
  }
}

@media (hover: none) {
  main > section:hover,
  #products h4:hover,
  #solutions h3:hover,
  #cases blockquote:hover,
  #news > ul > li:hover,
  #articles > article:hover,
  #contact > ul li:hover {
    transform: none;
  }
}