:root {
  --primary: #7c3aed;
  --primary-light: #a78bfa;
  --primary-dark: #5b21b6;
  --accent: #ec4899;
  --accent-light: #f472b6;
  --gradient-1: linear-gradient(135deg, #7c3aed 0%, #ec4899 50%, #f59e0b 100%);
  --gradient-2: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
  --gradient-3: linear-gradient(120deg, #8b5cf6 0%, #d946ef 100%);
  --bg: #faf8ff;
  --bg-alt: #f3eefe;
  --bg-card: #ffffff;
  --text: #1e1b2e;
  --text-secondary: #5b5675;
  --text-muted: #8b87a3;
  --border: #e8e3f5;
  --shadow-sm: 0 1px 3px rgba(124, 58, 237, 0.06);
  --shadow-md: 0 4px 16px rgba(124, 58, 237, 0.1);
  --shadow-lg: 0 12px 40px rgba(124, 58, 237, 0.15);
  --shadow-xl: 0 24px 64px rgba(124, 58, 237, 0.2);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --glass-bg: rgba(255, 255, 255, 0.65);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-shadow: 0 8px 32px rgba(124, 58, 237, 0.12);
  --nav-height: 68px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0d1a;
    --bg-alt: #16132a;
    --bg-card: #1c1830;
    --text: #ede9fe;
    --text-secondary: #b4aed0;
    --text-muted: #7d7699;
    --border: #2a2545;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.6);
    --glass-bg: rgba(28, 24, 48, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --primary: #a78bfa;
    --primary-light: #c4b5fd;
    --primary-dark: #7c3aed;
  }
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 60% at 10% 0%, rgba(124, 58, 237, 0.08), transparent 60%),
    radial-gradient(ellipse 60% 50% at 90% 20%, rgba(236, 72, 153, 0.06), transparent 60%),
    radial-gradient(ellipse 70% 60% at 50% 100%, rgba(245, 158, 11, 0.05), transparent 60%);
  pointer-events: none;
}

::selection {
  background: rgba(124, 58, 237, 0.25);
  color: var(--text);
}

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

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

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

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

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(1.75rem, 4.5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  position: relative;
  padding-bottom: 0.75rem;
  margin-bottom: 1.5rem;
}

h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 56px;
  height: 4px;
  border-radius: 2px;
  background: var(--gradient-1);
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
  color: var(--primary-dark);
}

@media (prefers-color-scheme: dark) {
  h3 {
    color: var(--primary-light);
  }
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

ul {
  list-style: none;
}

header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  transition: background-color var(--transition), box-shadow var(--transition);
}

header nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

header nav > a:first-child {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient-2);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  white-space: nowrap;
  flex-shrink: 0;
  position: relative;
  padding-left: 1.75rem;
}

header nav > a:first-child::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 5px;
  background: var(--gradient-1);
  box-shadow: 0 2px 8px rgba(124, 58, 237, 0.4);
}

header nav > ul {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

header nav > ul::-webkit-scrollbar {
  display: none;
}

header nav > ul li {
  flex-shrink: 0;
}

header nav > ul li a {
  display: block;
  padding: 0.45rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: color var(--transition), background-color var(--transition), transform var(--transition);
}

header nav > ul li a:hover {
  color: var(--primary);
  background: rgba(124, 58, 237, 0.08);
  transform: translateY(-1px);
}

@media (prefers-color-scheme: dark) {
  header nav > ul li a:hover {
    background: rgba(167, 139, 250, 0.12);
  }
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

main > section {
  padding: 3rem 0;
  animation: fadeUp 0.7s ease both;
}

main > section:nth-child(2) { animation-delay: 0.05s; }
main > section:nth-child(3) { animation-delay: 0.1s; }
main > section:nth-child(4) { animation-delay: 0.15s; }

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(124, 58, 237, 0.3); }
  50% { box-shadow: 0 0 0 12px rgba(124, 58, 237, 0); }
}

main > section:first-of-type {
  position: relative;
  margin: 1.5rem 0 0;
  padding: 3.5rem 2rem;
  border-radius: var(--radius-xl);
  background: var(--gradient-1);
  background-size: 200% 200%;
  animation: gradientShift 12s ease infinite, fadeUp 0.7s ease both;
  color: #ffffff;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

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

main > section:first-of-type::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.25), transparent 70%);
  pointer-events: none;
  animation: float 8s ease-in-out infinite;
}

main > section:first-of-type::after {
  content: "";
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.15), transparent 70%);
  pointer-events: none;
  animation: float 10s ease-in-out infinite reverse;
}

main > section:first-of-type h1 {
  position: relative;
  color: #ffffff;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
  margin-bottom: 1.25rem;
  max-width: 900px;
}

main > section:first-of-type p {
  position: relative;
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.05rem;
  max-width: 860px;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.1);
}

main > section:first-of-type p:last-child {
  margin-bottom: 0;
}

main > section:not(:first-of-type) {
  position: relative;
}

main > section[id="about"],
main > section[id="solutions"],
main > section[id="news"],
main > section[id="knowledge"],
main > section[id="howto"] {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  margin: 1.5rem 0;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  transition: box-shadow var(--transition), transform var(--transition);
}

main > section[id="about"]:hover,
main > section[id="solutions"]:hover,
main > section[id="news"]:hover,
main > section[id="knowledge"]:hover,
main > section[id="howto"]:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

main > section[id="products"],
main > section[id="cases"],
main > section[id="articles"],
main > section[id="faq"],
main > section[id="contact"] {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  margin: 1.5rem 0;
  box-shadow: var(--glass-shadow);
  border: 1px solid var(--glass-border);
  transition: box-shadow var(--transition), transform var(--transition);
}

main > section[id="products"]:hover,
main > section[id="cases"]:hover,
main > section[id="articles"]:hover,
main > section[id="faq"]:hover,
main > section[id="contact"]:hover {
  box-shadow: var(--shadow-lg);
}

main > section[id="contact"] {
  background: var(--gradient-3);
  color: #ffffff;
  border: none;
}

main > section[id="contact"] h2 {
  color: #ffffff;
}

main > section[id="contact"] h2::after {
  background: rgba(255, 255, 255, 0.8);
}

main > section[id="contact"] p {
  color: rgba(255, 255, 255, 0.92);
  padding: 0.35rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  transition: padding-left var(--transition), background-color var(--transition);
  border-radius: 4px;
}

main > section[id="contact"] p:hover {
  padding-left: 0.5rem;
  background: rgba(255, 255, 255, 0.08);
}

main > section[id="contact"] p:last-child {
  border-bottom: none;
}

article {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  overflow: hidden;
}

article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-2);
  opacity: 0;
  transition: opacity var(--transition);
}

article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(124, 58, 237, 0.3);
}

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

article h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.15rem;
  transition: color var(--transition);
}

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

article p {
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

article p:first-of-type {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
  background: rgba(124, 58, 237, 0.1);
  padding: 0.2rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 0.75rem;
}

@media (prefers-color-scheme: dark) {
  article p:first-of-type {
    background: rgba(167, 139, 250, 0.15);
  }
}

article a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary);
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  background: rgba(124, 58, 237, 0.08);
  transition: background-color var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
}

article a::after {
  content: "→";
  transition: transform var(--transition);
}

article a:hover {
  background: var(--primary);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.35);
}

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

main > section[id="faq"] h3 {
  position: relative;
  padding: 1rem 1.25rem 1rem 3rem;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  margin-top: 1rem;
  margin-bottom: 0;
  font-size: 1.02rem;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), transform var(--transition);
  border: 1px solid transparent;
}

main > section[id="faq"] h3::before {
  content: "Q";
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  color: #ffffff;
  background: var(--gradient-2);
  border-radius: 6px;
}

main > section[id="faq"] h3:hover {
  background: rgba(124, 58, 237, 0.08);
  border-color: rgba(124, 58, 237, 0.2);
  transform: translateX(4px);
}

main > section[id="faq"] h3 + p {
  padding: 1rem 1.25rem 1rem 3rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  margin-bottom: 1rem;
  font-size: 0.94rem;
  color: var(--text-secondary);
  animation: fadeIn 0.4s ease both;
}

main > section[id="howto"] h3 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1rem;
  background: linear-gradient(90deg, rgba(124, 58, 237, 0.08), transparent);
  border-left: 3px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-top: 1.5rem;
}

main > section[id="howto"] h3::before {
  content: "◆";
  color: var(--primary);
  font-size: 0.7rem;
}

main > section[id="howto"] p {
  padding-left: 1rem;
}

main > section[id="contact"] {
  position: relative;
  overflow: hidden;
}

main > section[id="contact"]::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -15%;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.18), transparent 70%);
  pointer-events: none;
  animation: float 9s ease-in-out infinite;
}

main > section[id="contact"]::after {
  content: "";
  position: absolute;
  bottom: -50%;
  left: -10%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1), transparent 70%);
  pointer-events: none;
  animation: float 11s ease-in-out infinite reverse;
}

main > section[id="contact"] p {
  position: relative;
}

main > section[aria-labelledby="sitemap-title"],
main > section[aria-labelledby="links-title"] {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin: 1.5rem 0;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

main > section[aria-labelledby="sitemap-title"] ul,
main > section[aria-labelledby="links-title"] ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

main > section[aria-labelledby="sitemap-title"] ul li a,
main > section[aria-labelledby="links-title"] ul li a {
  display: inline-block;
  padding: 0.5rem 1.1rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-alt);
  border-radius: 999px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

main > section[aria-labelledby="sitemap-title"] ul li a:hover,
main > section[aria-labelledby="links-title"] ul li a:hover {
  color: #ffffff;
  background: var(--gradient-2);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(124, 58, 237, 0.3);
}

footer {
  max-width: 1200px;
  margin: 2rem auto 0;
  padding: 0 1.25rem 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

footer section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

footer section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-2);
  opacity: 0;
  transition: opacity var(--transition);
}

footer section:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(124, 58, 237, 0.25);
}

footer section:hover::before {
  opacity: 1;
}

footer section h2 {
  font-size: 1rem;
  font-weight: 700;
  padding-bottom: 0.6rem;
  margin-bottom: 0.75rem;
  color: var(--primary-dark);
}

@media (prefers-color-scheme: dark) {
  footer section h2 {
    color: var(--primary-light);
  }
}

footer section h2::after {
  width: 32px;
  height: 3px;
}

footer section p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
  line-height: 1.6;
}

footer section p:last-child {
  margin-bottom: 0;
}

footer section[aria-labelledby="copyright-title"] {
  grid-column: 1 / -1;
  text-align: center;
  background: var(--gradient-2);
  border: none;
}

footer section[aria-labelledby="copyright-title"] h2 {
  color: #ffffff;
}

footer section[aria-labelledby="copyright-title"] h2::after {
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.8);
}

footer section[aria-labelledby="copyright-title"] p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.88rem;
}

@media (max-width: 992px) {
  header nav {
    height: auto;
    padding: 0.75rem 1rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  header nav > ul {
    width: 100%;
    padding-bottom: 0.25rem;
  }

  :root {
    --nav-height: 0px;
  }

  html {
    scroll-padding-top: 110px;
  }

  main > section:first-of-type {
    padding: 2.5rem 1.5rem;
  }

  main > section[id="about"],
  main > section[id="solutions"],
  main > section[id="news"],
  main > section[id="knowledge"],
  main > section[id="howto"],
  main > section[id="products"],
  main > section[id="cases"],
  main > section[id="articles"],
  main > section[id="faq"],
  main > section[id="contact"] {
    padding: 2rem 1.5rem;
  }
}

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

  main {
    padding: 0 0.85rem;
  }

  main > section {
    padding: 2rem 0;
  }

  main > section:first-of-type {
    padding: 2rem 1.25rem;
    border-radius: var(--radius-lg);
    margin-top: 1rem;
  }

  main > section:first-of-type h1 {
    font-size: 1.5rem;
  }

  main > section:first-of-type p {
    font-size: 0.95rem;
  }

  main > section[id="about"],
  main > section[id="solutions"],
  main > section[id="news"],
  main > section[id="knowledge"],
  main > section[id="howto"],
  main > section[id="products"],
  main > section[id="cases"],
  main > section[id="articles"],
  main > section[id="faq"],
  main > section[id="contact"] {
    padding: 1.5rem 1.1rem;
    border-radius: var(--radius-md);
  }

  h2 {
    font-size: 1.25rem;
  }

  h3 {
    font-size: 1.05rem;
  }

  article {
    padding: 1.15rem 1.2rem;
  }

  article h3 {
    font-size: 1.02rem;
  }

  main > section[id="faq"] h3 {
    padding: 0.85rem 1rem 0.85rem 2.75rem;
    font-size: 0.94rem;
  }

  main > section[id="faq"] h3::before {
    left: 0.75rem;
    width: 1.25rem;
    height: 1.25rem;
    font-size: 0.65rem;
  }

  main > section[id="faq"] h3 + p {
    padding: 0.85rem 1rem 0.85rem 1rem;
    font-size: 0.88rem;
  }

  main > section[aria-labelledby="sitemap-title"] ul li a,
  main > section[aria-labelledby="links-title"] ul li a {
    padding: 0.4rem 0.85rem;
    font-size: 0.82rem;
  }

  footer {
    padding: 0 0.85rem 1.5rem;
    gap: 0.85rem;
  }

  footer section {
    padding: 1.15rem;
  }
}

@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;
  }
}

@media print {
  header,
  footer,
  main > section[aria-labelledby="sitemap-title"],
  main > section[aria-labelledby="links-title"] {
    display: none;
  }

  body {
    background: #ffffff;
    color: #000000;
  }

  body::before {
    display: none;
  }

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

  main > section:first-of-type {
    background: #f5f5f5;
    color: #000000;
  }

  main > section:first-of-type h1,
  main > section:first-of-type p {
    color: #000000;
    text-shadow: none;
  }
}