:root {
  --brand-pink: #f7a8c4;
  --brand-pink-deep: #ec6fa0;
  --brand-mint: #8fd3c7;
  --brand-peach: #ffd9e6;
  --brand-lavender: #c9b6f0;
  --bg: #fdf6f9;
  --bg-soft: #ffffff;
  --bg-elevated: rgba(255, 255, 255, 0.72);
  --text: #33262e;
  --text-soft: #6b5b64;
  --text-muted: #96838d;
  --line: rgba(236, 111, 160, 0.16);
  --line-strong: rgba(236, 111, 160, 0.32);
  --shadow-sm: 0 2px 8px rgba(236, 111, 160, 0.08);
  --shadow-md: 0 10px 30px rgba(236, 111, 160, 0.14);
  --shadow-lg: 0 22px 60px rgba(236, 111, 160, 0.2);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-pill: 999px;
  --grad-brand: linear-gradient(135deg, #ffd9e6 0%, #f7a8c4 45%, #c9b6f0 100%);
  --grad-banner: linear-gradient(120deg, #ffe3ee 0%, #f7a8c4 40%, #c9b6f0 75%, #8fd3c7 100%);
  --grad-btn: linear-gradient(135deg, #f7a8c4 0%, #ec6fa0 100%);
  --grad-mint: linear-gradient(135deg, #b8ece3 0%, #8fd3c7 100%);
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(255, 255, 255, 0.7);
  --glass-blur: 16px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --maxw: 1200px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --t-fast: 0.18s var(--ease);
  --t-mid: 0.32s var(--ease);
  --t-slow: 0.6s var(--ease);
}

html[data-theme="dark"] {
  --bg: #17121a;
  --bg-soft: #211a26;
  --bg-elevated: rgba(40, 31, 47, 0.72);
  --text: #f6eef3;
  --text-soft: #cbb9c4;
  --text-muted: #9c8794;
  --line: rgba(247, 168, 196, 0.16);
  --line-strong: rgba(247, 168, 196, 0.34);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.32);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.42);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.55);
  --grad-brand: linear-gradient(135deg, #4a2f3f 0%, #7d3f5c 50%, #4b3a6b 100%);
  --grad-banner: linear-gradient(120deg, #3a2531 0%, #6e3550 40%, #463a66 75%, #2f5a56 100%);
  --grad-btn: linear-gradient(135deg, #f7a8c4 0%, #d95c8d 100%);
  --grad-mint: linear-gradient(135deg, #3d6f68 0%, #2f5a55 100%);
  --glass-bg: rgba(40, 31, 47, 0.55);
  --glass-border: rgba(247, 168, 196, 0.22);
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) {
    --bg: #17121a;
    --bg-soft: #211a26;
    --bg-elevated: rgba(40, 31, 47, 0.72);
    --text: #f6eef3;
    --text-soft: #cbb9c4;
    --text-muted: #9c8794;
    --line: rgba(247, 168, 196, 0.16);
    --line-strong: rgba(247, 168, 196, 0.34);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.32);
    --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.42);
    --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.55);
    --grad-brand: linear-gradient(135deg, #4a2f3f 0%, #7d3f5c 50%, #4b3a6b 100%);
    --grad-banner: linear-gradient(120deg, #3a2531 0%, #6e3550 40%, #463a66 75%, #2f5a56 100%);
    --grad-btn: linear-gradient(135deg, #f7a8c4 0%, #d95c8d 100%);
    --grad-mint: linear-gradient(135deg, #3d6f68 0%, #2f5a55 100%);
    --glass-bg: rgba(40, 31, 47, 0.55);
    --glass-border: rgba(247, 168, 196, 0.22);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    radial-gradient(1200px 600px at 12% -8%, rgba(247, 168, 196, 0.22), transparent 60%),
    radial-gradient(1000px 520px at 92% 4%, rgba(201, 182, 240, 0.2), transparent 62%),
    radial-gradient(900px 520px at 50% 100%, rgba(143, 211, 199, 0.16), transparent 64%);
  background-attachment: fixed;
  transition: background-color var(--t-mid), color var(--t-mid);
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--brand-pink-deep);
  text-decoration: none;
  transition: color var(--t-fast), opacity var(--t-fast);
}

a:hover {
  color: var(--brand-pink);
}

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

h1, h2, h3, h4 {
  margin: 0 0 0.7em;
  line-height: 1.3;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--text);
}

h1 {
  font-size: clamp(1.75rem, 1.2rem + 2.4vw, 3rem);
  background: linear-gradient(120deg, var(--brand-pink-deep), var(--brand-lavender) 60%, var(--brand-mint));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

h2 {
  font-size: clamp(1.4rem, 1.1rem + 1.4vw, 2.1rem);
  position: relative;
  padding-left: 18px;
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  bottom: 0.18em;
  width: 6px;
  border-radius: var(--radius-pill);
  background: var(--grad-btn);
  box-shadow: 0 0 18px rgba(247, 168, 196, 0.6);
}

h3 {
  font-size: clamp(1.1rem, 1rem + 0.5vw, 1.35rem);
  color: var(--text);
}

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

ul, ol {
  margin: 0 0 1.2em;
  padding-left: 1.3em;
  color: var(--text-soft);
}

li {
  margin-bottom: 0.45em;
}

strong {
  color: var(--text);
  font-weight: 700;
}

time {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 0.4em;
}

blockquote {
  margin: 0 0 1.2em;
  padding: 18px 22px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-left: 4px solid var(--brand-pink);
  border-radius: var(--radius-md);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-mid), box-shadow var(--t-mid);
}

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

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

details {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 4px 20px;
  margin-bottom: 14px;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--t-mid), transform var(--t-mid), border-color var(--t-mid);
}

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

details[open] {
  border-color: var(--brand-pink);
}

summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 0;
  font-weight: 700;
  color: var(--text);
  position: relative;
  padding-right: 34px;
}

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

summary::after {
  content: "";
  position: absolute;
  right: 4px;
  top: 50%;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--brand-pink-deep);
  border-bottom: 2px solid var(--brand-pink-deep);
  transform: translateY(-70%) rotate(45deg);
  transition: transform var(--t-mid);
}

details[open] summary::after {
  transform: translateY(-30%) rotate(-135deg);
}

details > p {
  padding-bottom: 14px;
  margin: 0;
  animation: fadeSlide 0.4s var(--ease);
}

@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

body > a[href="#main-content"] {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 200;
  padding: 12px 20px;
  background: var(--grad-btn);
  color: #fff;
  border-radius: var(--radius-pill);
  font-weight: 700;
  box-shadow: var(--shadow-md);
  transition: top var(--t-mid);
}

body > a[href="#main-content"]:focus {
  top: 16px;
  color: #fff;
}

header[role="banner"] {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
  border-bottom: 1px solid var(--glass-border);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  box-shadow: var(--shadow-sm);
}

header[role="banner"] > div {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

header[role="banner"] > div > a:first-child {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.02rem;
  color: var(--text);
  white-space: nowrap;
}

header[role="banner"] > div > a:first-child svg {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(247, 168, 196, 0.22), var(--shadow-sm);
  transition: transform var(--t-mid), box-shadow var(--t-mid);
}

header[role="banner"] > div > a:first-child:hover svg {
  transform: rotate(-12deg) scale(1.06);
  box-shadow: 0 0 0 6px rgba(247, 168, 196, 0.3), var(--shadow-md);
}

nav[aria-label="主导航"] {
  flex: 1 1 auto;
  min-width: 0;
}

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: inline-block;
  padding: 8px 13px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-soft);
  transition: background var(--t-fast), color var(--t-fast), transform var(--t-fast);
}

nav[aria-label="主导航"] a:hover {
  color: var(--brand-pink-deep);
  background: rgba(247, 168, 196, 0.16);
  transform: translateY(-2px);
}

form[role="search"] {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 1 300px;
  min-width: 200px;
}

form[role="search"] label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

form[role="search"] input[type="search"] {
  flex: 1 1 auto;
  min-width: 0;
  padding: 10px 16px;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}

form[role="search"] input[type="search"]::placeholder {
  color: var(--text-muted);
}

form[role="search"] input[type="search"]:focus {
  border-color: var(--brand-pink);
  box-shadow: 0 0 0 4px rgba(247, 168, 196, 0.22);
  outline: none;
}

form[role="search"] button,
header[role="banner"] > div > button {
  cursor: pointer;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  background: var(--grad-btn);
  color: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-fast), box-shadow var(--t-fast), filter var(--t-fast);
  white-space: nowrap;
}

header[role="banner"] > div > button {
  background: var(--bg-soft);
  color: var(--text);
  border-color: var(--line);
}

form[role="search"] button:hover,
header[role="banner"] > div > button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  filter: brightness(1.03);
}

header[role="banner"] > div > button[aria-label="打开移动菜单"] {
  display: none;
}

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px 60px;
}

main > nav[aria-label="面包屑导航"] ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 22px 0 8px;
  padding: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

main > nav[aria-label="面包屑导航"] li + li::before {
  content: "›";
  margin-right: 8px;
  color: var(--brand-pink);
  font-weight: 700;
}

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

main > nav[aria-label="面包屑导航"] a:hover {
  color: var(--brand-pink-deep);
}

section {
  margin: 34px 0;
  padding: 34px clamp(20px, 3.2vw, 44px);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--t-mid), transform var(--t-mid), border-color var(--t-mid);
  animation: sectionIn 0.7s var(--ease) both;
}

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

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

#hero {
  position: relative;
  overflow: hidden;
  margin-top: 18px;
  padding: clamp(28px, 4vw, 56px);
  background: var(--grad-banner);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  isolation: isolate;
}

#hero::before {
  content: "";
  position: absolute;
  inset: -40% -20% auto auto;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.55), transparent 62%);
  z-index: -1;
  animation: floatBlob 12s ease-in-out infinite alternate;
}

#hero::after {
  content: "";
  position: absolute;
  inset: auto auto -45% -15%;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.4), transparent 64%);
  z-index: -1;
  animation: floatBlob 15s ease-in-out infinite alternate-reverse;
}

@keyframes floatBlob {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(-28px, 26px, 0) scale(1.08); }
}

#hero h1 {
  background: none;
  -webkit-text-fill-color: initial;
  color: #3d2530;
  text-shadow: 0 2px 12px rgba(255, 255, 255, 0.55);
}

html[data-theme="dark"] #hero h1,
html:not([data-theme="light"]) #hero h1 {
  color: #fff;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.4);
}

#hero > p {
  color: #4a2f3b;
  max-width: 78ch;
}

html[data-theme="dark"] #hero > p {
  color: #f3dfe8;
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) #hero > p {
    color: #f3dfe8;
  }
}

#hero figure {
  margin: 22px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--t-slow), box-shadow var(--t-slow);
}

#hero figure:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: var(--shadow-lg);
}

#hero figure svg {
  width: 100%;
  height: auto;
  display: block;
}

#hero figcaption {
  padding: 10px 16px;
  font-size: 0.84rem;
  color: var(--text-soft);
  background: var(--bg-elevated);
  text-align: center;
}

#hero div[aria-label="轮播图占位"] {
  position: relative;
  margin: 22px 0;
  padding: 26px 22px;
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  border: 1px dashed var(--line-strong);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  text-align: center;
  overflow: hidden;
}

#hero div[aria-label="轮播图占位"]::after {
  content: "";
  position: absolute;
  top: 0;
  left: -60%;
  width: 40%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.55), transparent);
  animation: shimmer 3.6s var(--ease) infinite;
}

@keyframes shimmer {
  0% { left: -60%; }
  60%, 100% { left: 130%; }
}

#hero div[aria-label="轮播图占位"] p {
  margin: 0;
  font-weight: 600;
  color: var(--text-soft);
}

#hero ul[aria-label="平台核心数据"] {
  list-style: none;
  margin: 24px 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

#hero ul[aria-label="平台核心数据"] li {
  margin: 0;
  padding: 16px 14px;
  text-align: center;
  font-size: 0.86rem;
  color: var(--text-soft);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-mid), box-shadow var(--t-mid);
}

#hero ul[aria-label="平台核心数据"] li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

#hero ul[aria-label="平台核心数据"] strong {
  display: block;
  font-size: 1.6rem;
  font-weight: 900;
  line-height: 1.2;
  background: var(--grad-btn);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

#hero > p:last-child a {
  display: inline-block;
  padding: 10px 20px;
  margin: 6px 8px 6px 0;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
  background: var(--grad-btn);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}

#hero > p:last-child a:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  color: #fff;
}

main > nav[aria-label="页面锚点导航"] {
  margin: 30px 0;
  padding: 24px clamp(18px, 3vw, 36px);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--shadow-sm);
}

main > nav[aria-label="页面锚点导航"] h2 {
  font-size: 1.05rem;
  margin-bottom: 14px;
}

main > nav[aria-label="页面锚点导航"] h2::before {
  display: none;
}

main > nav[aria-label="页面锚点导航"] ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

main > nav[aria-label="页面锚点导航"] a {
  display: inline-block;
  padding: 7px 15px;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-soft);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  transition: all var(--t-fast);
}

main > nav[aria-label="页面锚点导航"] a:hover {
  color: #fff;
  background: var(--grad-btn);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

#products > h3,
#advantages > h3,
#solutions > h3,
#cases > h3,
#knowledge > h3 {
  margin-top: 1.6em;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--line-strong);
}

#articles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

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

#articles article {
  display: flex;
  flex-direction: column;
  padding: 22px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-mid), box-shadow var(--t-mid), border-color var(--t-mid);
}

#articles article:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-pink);
}

#articles article h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

#articles article p {
  font-size: 0.9rem;
  flex: 1 1 auto;
}

#articles article a {
  align-self: flex-start;
  margin-top: auto;
  font-weight: 700;
  font-size: 0.88rem;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  background: rgba(247, 168, 196, 0.16);
  color: var(--brand-pink-deep);
  transition: all var(--t-fast);
}

#articles article a:hover {
  background: var(--grad-btn);
  color: #fff;
  transform: translateX(3px);
}

#news article {
  padding: 20px 22px;
  margin-bottom: 16px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-mid), box-shadow var(--t-mid);
}

#news article:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
}

#news article h3 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

#testimonials blockquote {
  position: relative;
}

#applications ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

#applications li {
  margin: 0;
  padding: 16px 18px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-mid), box-shadow var(--t-mid), border-color var(--t-mid);
}

#applications li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-mint);
}

#applications li strong {
  color: var(--brand-pink-deep);
}

#howto ol,
#howto ul {
  padding-left: 1.4em;
}

#howto ol > li::marker {
  color: var(--brand-pink-deep);
  font-weight: 800;
}

#contact address {
  font-style: normal;
  padding: 22px 24px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

#contact address p {
  margin: 0 0 8px;
}

#contact address p:last-child {
  margin-bottom: 0;
}

#sitemap ul,
#links ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 8px;
}

#sitemap a,
#links a {
  display: block;
  padding: 9px 14px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-soft);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: all var(--t-fast);
}

#sitemap a:hover,
#links a:hover {
  color: #fff;
  background: var(--grad-btn);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

footer[role="contentinfo"] {
  margin-top: 40px;
  padding: 48px 24px 32px;
  background: var(--glass-bg);
  border-top: 1px solid var(--glass-border);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
}

footer[role="contentinfo"] > section {
  max-width: var(--maxw);
  margin: 0 auto 26px;
  padding: 0;
  background: none;
  border: none;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  animation: none;
}

footer[role="contentinfo"] > section:hover {
  box-shadow: none;
}

footer[role="contentinfo"] h2 {
  font-size: 1.1rem;
}

footer[role="contentinfo"] h3 {
  font-size: 0.95rem;
  margin-top: 1.2em;
}

footer[role="contentinfo"] > section[aria-labelledby="footer-legal"] {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0 28px;
}

footer[role="contentinfo"] > section[aria-labelledby="footer-legal"] h2 {
  grid-column: 1 / -1;
}

footer[role="contentinfo"] > p {
  max-width: var(--maxw);
  margin: 0 auto 8px;
  font-size: 0.84rem;
  color: var(--text-muted);
  text-align: center;
}

footer[role="contentinfo"] > p:last-child a {
  display: inline-block;
  margin-top: 6px;
  padding: 8px 20px;
  font-size: 0.84rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--text-soft);
  transition: all var(--t-fast);
}

footer[role="contentinfo"] > p:last-child a:hover {
  color: #fff;
  background: var(--grad-btn);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

@media (max-width: 1080px) {
  header[role="banner"] > div {
    gap: 12px;
  }

  nav[aria-label="主导航"] ul {
    gap: 2px;
  }

  nav[aria-label="主导航"] a {
    padding: 7px 10px;
    font-size: 0.84rem;
  }

  form[role="search"] {
    flex-basis: 240px;
  }
}

@media (max-width: 900px) {
  header[role="banner"] > div {
    flex-wrap: wrap;
  }

  nav[aria-label="主导航"] {
    order: 3;
    flex-basis: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
  }

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

  nav[aria-label="主导航"] ul {
    flex-wrap: nowrap;
  }

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

  form[role="search"] {
    order: 2;
    flex: 1 1 180px;
    min-width: 0;
  }

  #hero ul[aria-label="平台核心数据"] {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  html {
    scroll-padding-top: 120px;
  }

  body {
    font-size: 15px;
  }

  main {
    padding: 0 16px 44px;
  }

  header[role="banner"] > div {
    padding: 10px 16px;
  }

  header[role="banner"] > div > a:first-child span {
    font-size: 0.92rem;
  }

  header[role="banner"] > div > a:first-child svg {
    width: 38px;
    height: 38px;
  }

  header[role="banner"] > div > button[aria-label="暗黑模式"] {
    padding: 9px 14px;
    font-size: 0.8rem;
  }

  header[role="banner"] > div > button[aria-label="打开移动菜单"] {
    display: inline-block;
    padding: 9px 14px;
    font-size: 0.8rem;
  }

  section {
    margin: 22px 0;
    padding: 24px 18px;
    border-radius: var(--radius-md);
  }

  #hero {
    padding: 24px 18px;
  }

  #hero ul[aria-label="平台核心数据"] li {
    padding: 12px 10px;
    font-size: 0.78rem;
  }

  #hero ul[aria-label="平台核心数据"] strong {
    font-size: 1.3rem;
  }

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

  #contact address {
    padding: 18px;
  }

  footer[role="contentinfo"] {
    padding: 36px 16px 26px;
  }
}

@media (max-width: 480px) {
  form[role="search"] {
    flex-basis: 100%;
    order: 4;
  }

  form[role="search"] input[type="search"] {
    padding: 9px 14px;
  }

  #hero ul[aria-label="平台核心数据"] {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  main > nav[aria-label="页面锚点导航"] ul {
    gap: 6px;
  }

  main > nav[aria-label="页面锚点导航"] a {
    padding: 6px 12px;
    font-size: 0.78rem;
  }

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

@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;
  }
}

@media print {
  header[role="banner"],
  footer[role="contentinfo"],
  main > nav[aria-label="页面锚点导航"],
  body > a[href="#main-content"] {
    display: none;
  }

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

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