:root {
  --bg: #f4f6fb;
  --bg-alt: #ffffff;
  --bg-elev: rgba(255, 255, 255, 0.72);
  --bg-glass: rgba(255, 255, 255, 0.55);
  --border: rgba(30, 42, 58, 0.1);
  --border-strong: rgba(30, 42, 58, 0.18);
  --text: #1e2a3a;
  --text-soft: #4a5b70;
  --text-mute: #77879c;
  --brand: #6d5efc;
  --brand-2: #ff6ec7;
  --brand-3: #38d6c4;
  --brand-grad: linear-gradient(135deg, #6d5efc 0%, #a855f7 45%, #ff6ec7 100%);
  --brand-grad-soft: linear-gradient(135deg, rgba(109, 94, 252, 0.14), rgba(255, 110, 199, 0.14));
  --accent: #ff8a3d;
  --shadow-sm: 0 2px 10px rgba(30, 42, 58, 0.06);
  --shadow: 0 10px 30px rgba(30, 42, 58, 0.1);
  --shadow-lg: 0 24px 60px rgba(30, 42, 58, 0.16);
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 28px;
  --radius-pill: 999px;
  --ring: 0 0 0 3px rgba(109, 94, 252, 0.28);
  --header-h: 66px;
  --maxw: 1200px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1420;
    --bg-alt: #151d2c;
    --bg-elev: rgba(21, 29, 44, 0.78);
    --bg-glass: rgba(21, 29, 44, 0.6);
    --border: rgba(255, 255, 255, 0.1);
    --border-strong: rgba(255, 255, 255, 0.2);
    --text: #eaf0fb;
    --text-soft: #b6c2d6;
    --text-mute: #8593aa;
    --brand: #8b7dff;
    --brand-2: #ff7fd0;
    --brand-3: #46e0cf;
    --brand-grad: linear-gradient(135deg, #7b6bff 0%, #b06cff 45%, #ff7fd0 100%);
    --brand-grad-soft: linear-gradient(135deg, rgba(123, 107, 255, 0.22), rgba(255, 127, 208, 0.18));
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.35);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.55);
    --ring: 0 0 0 3px rgba(139, 125, 255, 0.35);
  }
}

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

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  background-image:
    radial-gradient(1100px 520px at 12% -8%, rgba(109, 94, 252, 0.16), transparent 62%),
    radial-gradient(900px 480px at 92% 4%, rgba(255, 110, 199, 0.14), transparent 60%),
    radial-gradient(800px 600px at 50% 108%, rgba(56, 214, 196, 0.12), transparent 62%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: var(--brand);
  text-decoration: none;
  transition: color 0.25s var(--ease), opacity 0.25s var(--ease);
}

a:hover,
a:focus-visible {
  color: var(--brand-2);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: var(--radius-sm);
}

h1,
h2,
h3,
h4 {
  line-height: 1.3;
  color: var(--text);
  letter-spacing: 0.2px;
  margin: 0 0 0.6em;
  font-weight: 800;
}

h1 {
  font-size: clamp(1.7rem, 4.6vw, 2.9rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.4rem, 3.2vw, 2.1rem);
  position: relative;
  padding-left: 0.72em;
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  bottom: 0.18em;
  width: 6px;
  border-radius: var(--radius-pill);
  background: var(--brand-grad);
  box-shadow: 0 0 18px rgba(109, 94, 252, 0.45);
}

h3 {
  font-size: clamp(1.08rem, 2.1vw, 1.32rem);
  color: var(--text-soft);
}

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

ul,
ol {
  margin: 0 0 1em;
  padding-left: 1.35em;
  color: var(--text-soft);
}

li {
  margin-bottom: 0.4em;
}

blockquote {
  margin: 0;
  padding: 1.1em 1.3em;
  border-left: 4px solid transparent;
  border-image: var(--brand-grad) 1;
  background: var(--bg-glass);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  border-radius: var(--radius);
  color: var(--text-soft);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

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

blockquote p {
  margin: 0;
}

address {
  font-style: normal;
}

time {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--text-mute);
  letter-spacing: 0.4px;
}

details {
  background: var(--bg-elev);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.85rem;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}

details:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

details[open] {
  border-color: rgba(109, 94, 252, 0.4);
}

summary {
  cursor: pointer;
  list-style: none;
  padding: 1.05rem 1.25rem;
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.7rem;
  position: relative;
  transition: background 0.3s var(--ease), color 0.3s var(--ease);
}

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

summary::before {
  content: "";
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--brand-grad-soft);
  border: 1px solid var(--border-strong);
  position: relative;
  transition: transform 0.35s var(--ease), background 0.35s var(--ease);
}

summary::after {
  content: "";
  position: absolute;
  left: calc(1.25rem + 7px);
  top: 50%;
  width: 8px;
  height: 8px;
  margin-top: -4px;
  border-right: 2px solid var(--brand);
  border-bottom: 2px solid var(--brand);
  transform: rotate(45deg);
  transition: transform 0.35s var(--ease);
}

details[open] summary::after {
  transform: rotate(-135deg);
}

details[open] summary::before {
  background: var(--brand-grad);
}

summary:hover {
  background: var(--brand-grad-soft);
}

details > p {
  padding: 0 1.25rem 1.15rem;
  margin: 0;
  animation: fadeSlide 0.4s var(--ease) both;
}

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-elev);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

nav {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0.6rem 1.1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

nav > a:first-child {
  font-size: 1.22rem;
  font-weight: 900;
  letter-spacing: 0.5px;
  background: var(--brand-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
  position: relative;
  padding-right: 0.2rem;
  transition: filter 0.3s var(--ease), transform 0.3s var(--ease);
}

nav > a:first-child::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--brand-grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}

nav > a:first-child:hover {
  filter: brightness(1.12);
  transform: translateY(-1px);
}

nav > a:first-child:hover::after {
  transform: scaleX(1);
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-left: auto;
}

nav ul li {
  margin: 0;
}

nav ul a {
  display: inline-block;
  padding: 0.42rem 0.78rem;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-soft);
  border: 1px solid transparent;
  transition: color 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

nav ul a:hover,
nav ul a:focus-visible {
  color: var(--text);
  background: var(--brand-grad-soft);
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.6rem 1.1rem 4rem;
  display: block;
}

section {
  margin-bottom: 1.6rem;
  padding: 1.6rem 1.35rem;
  background: var(--bg-elev);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s var(--ease);
  animation: fadeSlide 0.7s var(--ease) both;
  animation-timeline: view();
  animation-range: entry 0% entry 60%;
}

section:hover {
  box-shadow: var(--shadow);
  border-color: var(--border-strong);
}

#hero {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  padding: 3.4rem 1.6rem 3rem;
  background: var(--brand-grad);
  background-size: 200% 200%;
  animation: gradientShift 14s ease infinite, fadeSlide 0.8s var(--ease) both;
  border: none;
  box-shadow: var(--shadow-lg);
  color: #fff;
  text-align: center;
}

#hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 300px at 18% 12%, rgba(255, 255, 255, 0.28), transparent 60%),
    radial-gradient(520px 280px at 84% 88%, rgba(255, 255, 255, 0.2), transparent 62%);
  pointer-events: none;
}

#hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(2px 2px at 20% 30%, rgba(255, 255, 255, 0.9), transparent),
    radial-gradient(2px 2px at 70% 20%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(1.5px 1.5px at 40% 70%, rgba(255, 255, 255, 0.8), transparent),
    radial-gradient(2px 2px at 85% 60%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(1.5px 1.5px at 12% 82%, rgba(255, 255, 255, 0.8), transparent);
  animation: twinkle 6s ease-in-out infinite alternate;
  pointer-events: none;
}

#hero h1 {
  position: relative;
  z-index: 1;
  color: #fff;
  text-shadow: 0 6px 30px rgba(0, 0, 0, 0.28);
  margin-bottom: 0.7em;
  animation: fadeUp 0.9s var(--ease) 0.1s both;
}

#hero p {
  position: relative;
  z-index: 1;
  color: rgba(255, 255, 255, 0.94);
  max-width: 860px;
  margin: 0 auto;
  font-size: clamp(0.96rem, 1.6vw, 1.08rem);
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.22);
  animation: fadeUp 0.9s var(--ease) 0.22s both;
}

#brand,
#products,
#advantages,
#solutions,
#applications,
#cases,
#testimonials,
#news,
#articles,
#industry,
#faq,
#howto,
#contact,
#sitemap,
#links {
  scroll-margin-top: calc(var(--header-h) + 14px);
}

#products h3,
#advantages h3,
#solutions h3,
#applications h3,
#cases h3,
#brand h3,
#howto h3 {
  display: inline-block;
  padding: 0.28rem 0.85rem;
  border-radius: var(--radius-pill);
  background: var(--brand-grad-soft);
  border: 1px solid var(--border);
  margin-top: 0.5rem;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

#products h3:hover,
#advantages h3:hover,
#solutions h3:hover,
#applications h3:hover,
#cases h3:hover,
#brand h3:hover,
#howto h3:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
}

#testimonials blockquote {
  margin-bottom: 0.9rem;
}

#news article,
#articles article,
#industry article {
  position: relative;
  padding: 1.25rem 1.3rem;
  margin-bottom: 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-alt);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s var(--ease);
}

#news article::before,
#articles article::before,
#industry article::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--brand-grad);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.45s var(--ease);
}

#news article:hover,
#articles article:hover,
#industry article:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: var(--border-strong);
}

#news article:hover::before,
#articles article:hover::before,
#industry article:hover::before {
  transform: scaleY(1);
}

#news article h3,
#articles article h3,
#industry article h3 {
  background: none;
  border: none;
  padding: 0;
  margin: 0 0 0.4em;
  color: var(--text);
  font-size: clamp(1.02rem, 2vw, 1.2rem);
}

#news article h3:hover,
#articles article h3:hover,
#industry article h3:hover {
  transform: none;
  box-shadow: none;
}

#news article a,
#articles article a,
#industry article a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 700;
  font-size: 0.92rem;
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius-pill);
  background: var(--brand-grad-soft);
  border: 1px solid var(--border-strong);
  transition: gap 0.3s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease), color 0.3s var(--ease);
}

#news article a::after,
#articles article a::after,
#industry article a::after {
  content: "\2192";
  transition: transform 0.3s var(--ease);
}

#news article a:hover,
#articles article a:hover,
#industry article a:hover {
  gap: 0.55rem;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
  color: var(--brand-2);
}

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

#howto ol {
  counter-reset: step;
  list-style: none;
  padding-left: 0;
}

#howto ol li {
  position: relative;
  padding: 0.7rem 0.9rem 0.7rem 3.1rem;
  margin-bottom: 0.6rem;
  border-radius: var(--radius);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  counter-increment: step;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

#howto ol li::before {
  content: counter(step);
  position: absolute;
  left: 0.8rem;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 0.9rem;
  color: #fff;
  background: var(--brand-grad);
  box-shadow: 0 4px 14px rgba(109, 94, 252, 0.4);
}

#howto ol li:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
  border-color: var(--border-strong);
}

#contact address p {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.6rem;
  padding: 0.6rem 0.9rem;
  margin-bottom: 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

#contact address p:hover {
  transform: translateX(5px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

#sitemap ul,
#links ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 0.55rem;
}

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

#sitemap a,
#links a {
  display: block;
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius-sm);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-soft);
  transition: transform 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s var(--ease);
}

#sitemap a:hover,
#links a:hover {
  transform: translateY(-3px);
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--brand-grad-soft);
  box-shadow: var(--shadow-sm);
}

footer {
  position: relative;
  margin-top: 2rem;
  padding: 2.6rem 1.1rem 2rem;
  background: var(--bg-elev);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-top: 1px solid var(--border);
  color: var(--text-soft);
}

footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--brand-grad);
  background-size: 200% 100%;
  animation: gradientShift 10s ease infinite;
}

footer > section {
  max-width: var(--maxw);
  margin: 0 auto 1rem;
  padding: 1.1rem 1.2rem;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  animation: none;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

footer > section:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--border-strong);
}

footer > section h2 {
  font-size: 1.02rem;
  padding-left: 0.7em;
  margin-bottom: 0.5em;
  color: var(--text);
}

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

footer > section p {
  margin: 0;
  font-size: 0.92rem;
}

footer > p {
  max-width: var(--maxw);
  margin: 0.6rem auto 0;
  padding: 0 0.3rem;
  font-size: 0.82rem;
  color: var(--text-mute);
  text-align: center;
  line-height: 1.7;
}

@keyframes fadeSlide {
  from {
    opacity: 0;
    transform: translateY(26px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes twinkle {
  0% {
    opacity: 0.55;
  }
  100% {
    opacity: 1;
  }
}

@media (max-width: 900px) {
  nav {
    padding: 0.55rem 0.9rem;
  }

  nav ul {
    width: 100%;
    margin-left: 0;
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 0.15rem;
  }

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

  nav ul a {
    white-space: nowrap;
    font-size: 0.85rem;
    padding: 0.38rem 0.7rem;
  }

  main {
    padding: 1.2rem 0.85rem 3rem;
  }

  section {
    padding: 1.25rem 1rem;
    border-radius: var(--radius);
  }

  #hero {
    padding: 2.6rem 1.1rem 2.4rem;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
  }

  h2 {
    padding-left: 0.62em;
  }

  h2::before {
    width: 5px;
  }

  #sitemap ul,
  #links ul {
    grid-template-columns: repeat(auto-fill, minmax(128px, 1fr));
    gap: 0.45rem;
  }

  summary {
    padding: 0.9rem 1rem;
    font-size: 0.96rem;
  }

  details > p {
    padding: 0 1rem 1rem;
  }

  footer {
    padding: 2rem 0.85rem 1.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  section {
    animation: none;
    opacity: 1;
    transform: none;
  }
}

@media print {
  header,
  footer,
  #hero::after,
  nav ul {
    display: none;
  }

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

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