:root {
  --bg: #0d0d1a;
  --bg-soft: #14142a;
  --bg-card: rgba(26, 26, 46, 0.72);
  --bg-card-solid: #1a1a2e;
  --bg-glass: rgba(22, 33, 62, 0.55);
  --border: rgba(233, 69, 96, 0.18);
  --border-soft: rgba(255, 255, 255, 0.08);
  --text: #eef1f8;
  --text-soft: #b8bed0;
  --text-mute: #8890a6;
  --primary: #e94560;
  --primary-2: #f77f00;
  --accent: #533483;
  --accent-2: #0f3460;
  --grad-banner: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #533483 80%, #e94560 130%);
  --grad-text: linear-gradient(120deg, #f77f00, #e94560 55%, #a06cd5);
  --grad-btn: linear-gradient(135deg, #e94560, #f77f00);
  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.28);
  --shadow-md: 0 12px 34px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 0 1px rgba(233, 69, 96, 0.22), 0 14px 40px rgba(233, 69, 96, 0.18);
  --radius: 18px;
  --radius-sm: 12px;
  --radius-lg: 26px;
  --blur: saturate(180%) blur(16px);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --maxw: 1180px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f6fb;
    --bg-soft: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.78);
    --bg-card-solid: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.62);
    --border: rgba(233, 69, 96, 0.22);
    --border-soft: rgba(15, 52, 96, 0.1);
    --text: #16182b;
    --text-soft: #3d4459;
    --text-mute: #6b7288;
    --grad-banner: linear-gradient(135deg, #eef1fb 0%, #e3e9f9 38%, #f3e7f6 70%, #ffe6e1 100%);
    --grad-text: linear-gradient(120deg, #d1495b, #e94560 50%, #7b3fa0);
    --shadow-sm: 0 4px 14px rgba(15, 52, 96, 0.08);
    --shadow-md: 0 12px 34px rgba(15, 52, 96, 0.12);
    --shadow-glow: 0 0 0 1px rgba(233, 69, 96, 0.16), 0 14px 40px rgba(233, 69, 96, 0.12);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.78;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    radial-gradient(900px 520px at 12% -8%, rgba(233, 69, 96, 0.16), transparent 62%),
    radial-gradient(820px 480px at 92% 4%, rgba(83, 52, 131, 0.22), transparent 60%),
    radial-gradient(760px 520px at 50% 108%, rgba(15, 52, 96, 0.28), transparent 66%);
  background-attachment: fixed;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  animation: pageFade 0.6s var(--ease) both;
}

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

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

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

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 6px;
}

h1, h2, h3, h4 {
  line-height: 1.32;
  letter-spacing: 0.2px;
  color: var(--text);
  font-weight: 800;
}

h1 {
  font-size: clamp(1.55rem, 3.6vw, 2.5rem);
  margin: 0 0 18px;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

h2 {
  font-size: clamp(1.3rem, 2.6vw, 1.75rem);
  margin: 0 0 22px;
  padding-left: 16px;
  position: relative;
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  bottom: 0.18em;
  width: 5px;
  border-radius: 4px;
  background: var(--grad-btn);
  box-shadow: 0 0 16px rgba(233, 69, 96, 0.55);
}

h3 {
  font-size: clamp(1.05rem, 1.9vw, 1.22rem);
  margin: 26px 0 12px;
  color: var(--text);
}

h3 a {
  color: var(--text);
}

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

p {
  margin: 0 0 16px;
  color: var(--text-soft);
}

ul, ol {
  margin: 0 0 16px;
  padding-left: 1.3em;
  color: var(--text-soft);
}

li {
  margin-bottom: 8px;
}

blockquote {
  margin: 18px 0;
  padding: 18px 22px;
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--bg-card);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

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

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

figure {
  margin: 26px 0;
  padding: 14px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

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

figure svg {
  width: 100%;
  border-radius: var(--radius-sm);
}

figcaption {
  margin-top: 12px;
  font-size: 0.86rem;
  color: var(--text-mute);
  text-align: center;
}

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: 0 6px 26px rgba(0, 0, 0, 0.22);
}

header > div {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

header > div > a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.02rem;
  letter-spacing: 0.4px;
  color: var(--text);
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--grad-btn);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  position: relative;
  transition: transform 0.3s var(--ease);
}

header > div > a::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--grad-btn);
  box-shadow: 0 0 14px rgba(233, 69, 96, 0.8);
  flex: none;
}

header > div > a:hover {
  transform: scale(1.04);
}

nav[aria-label="主导航"] ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

nav[aria-label="主导航"] a {
  display: block;
  padding: 7px 13px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-soft);
  border-radius: 999px;
  transition: color 0.25s var(--ease), background 0.25s var(--ease), transform 0.25s var(--ease);
}

nav[aria-label="主导航"] a:hover {
  color: #fff;
  background: var(--grad-btn);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(233, 69, 96, 0.35);
}

nav[aria-label="面包屑导航"] {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 16px 20px 0;
}

nav[aria-label="面包屑导航"] ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 10px 16px;
  font-size: 0.84rem;
  color: var(--text-mute);
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  width: fit-content;
  max-width: 100%;
}

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

nav[aria-label="面包屑导航"] li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--text-mute);
  opacity: 0.6;
}

nav[aria-label="面包屑导航"] a {
  color: var(--text-soft);
  font-weight: 600;
}

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

nav[aria-label="面包屑导航"] [aria-current="page"] {
  color: var(--primary);
  font-weight: 700;
}

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 26px 20px 40px;
}

main > section {
  position: relative;
  margin: 0 0 30px;
  padding: 32px clamp(18px, 3.4vw, 42px);
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease), border-color 0.45s var(--ease);
  animation: riseIn 0.7s var(--ease) both;
  animation-timeline: view();
  animation-range: entry 0% entry 42%;
}

@supports not (animation-timeline: view()) {
  main > section {
    animation: none;
  }
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(38px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

main > section::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background: radial-gradient(420px 220px at 100% 0%, rgba(233, 69, 96, 0.12), transparent 70%);
  opacity: 0;
  transition: opacity 0.45s var(--ease);
}

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

main > section:hover::after {
  opacity: 1;
}

#hero {
  background: var(--grad-banner);
  background-size: 200% 200%;
  animation: riseIn 0.7s var(--ease) both, bannerShift 18s ease-in-out infinite alternate;
  animation-timeline: auto;
  border: 1px solid rgba(233, 69, 96, 0.28);
  text-align: left;
}

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

#hero::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -80px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(247, 127, 0, 0.42), transparent 68%);
  filter: blur(6px);
  pointer-events: none;
  animation: floatOrb 12s ease-in-out infinite alternate;
}

@keyframes floatOrb {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(-26px, 30px, 0) scale(1.12); }
}

#hero h1 {
  position: relative;
  z-index: 1;
  text-shadow: 0 2px 24px rgba(233, 69, 96, 0.22);
}

#hero p {
  position: relative;
  z-index: 1;
  font-size: 1.02rem;
  color: var(--text-soft);
  max-width: 78ch;
}

#hero p:first-of-type {
  font-size: 1.08rem;
  color: var(--text);
  font-weight: 500;
}

#hero figure {
  margin-top: 26px;
}

#about h3:first-of-type,
#products h3:first-of-type,
#contact h3:first-of-type {
  margin-top: 8px;
}

#products {
  background:
    linear-gradient(160deg, rgba(233, 69, 96, 0.08), transparent 46%),
    var(--bg-card);
}

#solutions {
  background:
    linear-gradient(200deg, rgba(83, 52, 131, 0.16), transparent 50%),
    var(--bg-card);
}

#cases {
  background:
    linear-gradient(140deg, rgba(247, 127, 0, 0.09), transparent 48%),
    var(--bg-card);
}

#news {
  background:
    linear-gradient(180deg, rgba(15, 52, 96, 0.2), transparent 55%),
    var(--bg-card);
}

#articles article {
  position: relative;
  margin: 0 0 18px;
  padding: 22px 24px;
  background: var(--bg-card-solid);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
  overflow: hidden;
}

#articles article::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--grad-btn);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.4s var(--ease);
}

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

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

#articles article h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
}

#articles article h3 a {
  display: inline-block;
  background-image: linear-gradient(var(--primary), var(--primary));
  background-size: 0% 2px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size 0.35s var(--ease), color 0.3s var(--ease);
}

#articles article:hover h3 a {
  background-size: 100% 2px;
  color: var(--primary);
}

#articles article p {
  margin: 0 0 10px;
  font-size: 0.94rem;
}

#articles article p:nth-of-type(1) {
  font-size: 0.82rem;
  color: var(--text-mute);
  letter-spacing: 0.3px;
}

#articles article p:last-child {
  margin: 6px 0 0;
}

#articles article p:last-child a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 18px;
  font-size: 0.86rem;
  font-weight: 700;
  color: #fff;
  background: var(--grad-btn);
  background-size: 160% 160%;
  border-radius: 999px;
  box-shadow: 0 6px 18px rgba(233, 69, 96, 0.3);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background-position 0.5s var(--ease);
}

#articles article p:last-child a::after {
  content: "→";
  transition: transform 0.3s var(--ease);
}

#articles article p:last-child a:hover {
  transform: translateY(-2px);
  background-position: 100% 50%;
  box-shadow: 0 10px 26px rgba(233, 69, 96, 0.45);
  color: #fff;
}

#articles article p:last-child a:hover::after {
  transform: translateX(4px);
}

#faq details {
  margin: 0 0 12px;
  padding: 0;
  background: var(--bg-card-solid);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}

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

#faq details[open] {
  border-color: var(--border);
  box-shadow: var(--shadow-glow);
}

#faq summary {
  position: relative;
  display: block;
  padding: 16px 52px 16px 20px;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: color 0.25s var(--ease), background 0.3s var(--ease);
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  line-height: 24px;
  text-align: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  border: 1px solid var(--border);
  border-radius: 50%;
  transition: transform 0.35s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease);
}

#faq details[open] summary::after {
  content: "−";
  transform: translateY(-50%) rotate(180deg);
  background: var(--grad-btn);
  color: #fff;
  border-color: transparent;
}

#faq summary:hover {
  color: var(--primary);
  background: rgba(233, 69, 96, 0.06);
}

#faq details p {
  margin: 0;
  padding: 0 20px 18px;
  font-size: 0.94rem;
  color: var(--text-soft);
  animation: fadeSlide 0.4s var(--ease) both;
}

@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

#howto p {
  position: relative;
  padding-left: 0;
}

#howto h3 {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

#howto h3::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--grad-btn);
  box-shadow: 0 0 12px rgba(233, 69, 96, 0.7);
  flex: none;
}

#contact p {
  font-size: 0.95rem;
}

#contact p:nth-of-type(3),
#contact p:nth-of-type(4) {
  padding: 12px 16px;
  background: var(--bg-card-solid);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

#contact p:nth-of-type(3):hover,
#contact p:nth-of-type(4):hover {
  border-color: var(--border);
  transform: translateX(4px);
}

#sitemap ul,
#friendship ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 10px;
}

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

#sitemap a,
#friendship a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-soft);
  background: var(--bg-card-solid);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

#sitemap a::before,
#friendship a::before {
  content: "▸";
  color: var(--primary);
  font-size: 0.8rem;
  transition: transform 0.3s var(--ease);
}

#sitemap a:hover,
#friendship a:hover {
  color: var(--text);
  border-color: var(--border);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

#sitemap a:hover::before,
#friendship a:hover::before {
  transform: translateX(4px);
}

footer {
  margin-top: 20px;
  padding: 10px 20px 40px;
  background:
    linear-gradient(180deg, transparent, rgba(15, 52, 96, 0.16)),
    var(--bg-soft);
  border-top: 1px solid var(--border-soft);
}

footer > section {
  max-width: var(--maxw);
  margin: 0 auto 16px;
  padding: 24px clamp(18px, 3vw, 32px);
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

footer > section:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

footer h2 {
  font-size: 1.05rem;
  padding-left: 14px;
  margin-bottom: 12px;
}

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

footer p {
  font-size: 0.88rem;
  color: var(--text-mute);
  margin: 0 0 8px;
}

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

#footer-info {
  text-align: center;
  background: transparent;
  border: none;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  padding: 10px 16px 0;
}

#footer-info:hover {
  transform: none;
  box-shadow: none;
}

#footer-info p {
  font-size: 0.82rem;
  line-height: 1.9;
}

#footer-info p:first-child {
  color: var(--text-soft);
  font-weight: 600;
}

@media (max-width: 900px) {
  header > div {
    padding: 10px 16px;
    gap: 10px;
  }

  nav[aria-label="主导航"] {
    width: 100%;
  }

  nav[aria-label="主导航"] ul {
    justify-content: flex-start;
    gap: 2px;
    padding-bottom: 2px;
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

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

  nav[aria-label="主导航"] a {
    white-space: nowrap;
    font-size: 0.84rem;
    padding: 6px 11px;
  }

  main {
    padding: 18px 14px 30px;
  }

  main > section {
    padding: 24px 18px;
    border-radius: var(--radius);
    margin-bottom: 20px;
  }

  #articles article {
    padding: 18px;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
    line-height: 1.72;
  }

  h1 {
    font-size: 1.42rem;
  }

  h2 {
    font-size: 1.18rem;
    padding-left: 13px;
  }

  header > div > a {
    font-size: 0.92rem;
  }

  nav[aria-label="面包屑导航"] {
    padding: 12px 14px 0;
  }

  nav[aria-label="面包屑导航"] ol {
    font-size: 0.78rem;
    padding: 8px 13px;
  }

  main > section {
    padding: 20px 15px;
  }

  #hero p {
    font-size: 0.95rem;
  }

  #hero p:first-of-type {
    font-size: 1rem;
  }

  #faq summary {
    padding: 14px 46px 14px 16px;
    font-size: 0.92rem;
  }

  #faq details p {
    padding: 0 16px 16px;
    font-size: 0.9rem;
  }

  #sitemap ul,
  #friendship ul {
    grid-template-columns: 1fr;
  }

  #articles article p:last-child a {
    width: 100%;
    justify-content: center;
  }

  figure {
    padding: 10px;
  }
}

@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,
  nav[aria-label="面包屑导航"],
  footer,
  #hero::before {
    display: none;
  }

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

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