:root {
  --primary: #1a3a6b;
  --primary-light: #2f5fa8;
  --primary-lighter: #3c73c4;
  --primary-lightest: #4a80d0;
  --accent: #00c8ff;
  --accent-soft: rgba(0, 200, 255, 0.18);
  --gradient-banner: linear-gradient(135deg, #1a3a6b 0%, #2f5fa8 45%, #00c8ff 100%);
  --gradient-soft: linear-gradient(135deg, rgba(26, 58, 107, 0.06), rgba(0, 200, 255, 0.08));
  --bg: #f4f7fc;
  --bg-alt: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --bg-glass-border: rgba(255, 255, 255, 0.55);
  --text: #17233a;
  --text-secondary: #4a5a75;
  --text-muted: #7a8aa3;
  --border: rgba(26, 58, 107, 0.12);
  --shadow-sm: 0 2px 8px rgba(23, 35, 58, 0.06);
  --shadow-md: 0 8px 28px rgba(23, 35, 58, 0.1);
  --shadow-lg: 0 18px 48px rgba(23, 35, 58, 0.16);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --header-h: 64px;
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --maxw: 1180px;
  --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: #0d1420;
    --bg-alt: #141d2c;
    --bg-glass: rgba(20, 29, 44, 0.72);
    --bg-glass-border: rgba(255, 255, 255, 0.08);
    --text: #e8eef7;
    --text-secondary: #a8b6cc;
    --text-muted: #7a8aa3;
    --border: rgba(255, 255, 255, 0.1);
    --gradient-soft: linear-gradient(135deg, rgba(0, 200, 255, 0.08), rgba(47, 95, 168, 0.1));
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.55);
  }
}

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

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  background-image: radial-gradient(circle at 12% 0%, rgba(0, 200, 255, 0.08), transparent 42%),
    radial-gradient(circle at 88% 12%, rgba(47, 95, 168, 0.1), transparent 45%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

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

h1 {
  font-size: clamp(1.5rem, 3.4vw, 2.35rem);
}

h2 {
  font-size: clamp(1.3rem, 2.6vw, 1.85rem);
  position: relative;
  padding-left: 16px;
  margin: 0 0 1.1rem;
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  bottom: 0.18em;
  width: 5px;
  border-radius: var(--radius-pill);
  background: var(--gradient-banner);
}

h3 {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  margin: 1.6rem 0 0.6rem;
}

p {
  margin: 0 0 1rem;
  color: var(--text-secondary);
}

ul,
ol {
  margin: 0 0 1rem;
  padding-left: 1.4rem;
  color: var(--text-secondary);
}

li {
  margin-bottom: 0.45rem;
}

li::marker {
  color: var(--primary-light);
}

blockquote {
  margin: 1rem 0;
  padding: 1rem 1.25rem;
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--gradient-soft);
  color: var(--text-secondary);
  font-style: normal;
}

blockquote p {
  margin: 0;
}

strong {
  color: var(--text);
  font-weight: 600;
}

address {
  font-style: normal;
}

/* ============ 头部导航 ============ */
#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  backdrop-filter: blur(18px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}

#site-header:hover {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.logo {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient-banner);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  white-space: nowrap;
  padding: 6px 0;
  transition: opacity var(--transition), transform var(--transition);
}

.logo:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

#site-header nav {
  flex: 1 1 auto;
}

#site-header nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

#site-header nav li {
  margin: 0;
}

#site-header nav a {
  display: inline-block;
  padding: 8px 12px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-radius: var(--radius-pill);
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

#site-header nav a:hover {
  color: var(--primary-light);
  background: var(--accent-soft);
  transform: translateY(-1px);
}

#site-header form {
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
}

#site-header form label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

#site-header input[type="search"] {
  width: 190px;
  padding: 8px 16px;
  font-size: 0.88rem;
  font-family: inherit;
  color: var(--text);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  transition: border-color var(--transition), box-shadow var(--transition), width var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

#site-header input[type="search"]::placeholder {
  color: var(--text-muted);
}

#site-header input[type="search"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  width: 220px;
}

#site-header button[type="submit"] {
  padding: 8px 18px;
  font-size: 0.88rem;
  font-family: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-banner);
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

#site-header button[type="submit"]:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0, 200, 255, 0.35);
  filter: brightness(1.06);
}

#site-header button[type="submit"]:active {
  transform: translateY(0);
}

/* ============ 主内容区 ============ */
main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px 60px;
}

main > nav[aria-label="面包屑导航"] {
  padding: 18px 0 6px;
}

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

main > nav[aria-label="面包屑导航"] li {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

main > nav[aria-label="面包屑导航"] li + li::before {
  content: "/";
  color: var(--text-muted);
  opacity: 0.6;
}

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

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

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

/* ============ 通用区块 ============ */
main > section {
  position: relative;
  margin-top: 28px;
  padding: 32px clamp(18px, 3vw, 40px);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  animation: fadeUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}

main > section:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 200, 255, 0.22);
}

main > section:nth-of-type(2) { animation-delay: 0.05s; }
main > section:nth-of-type(3) { animation-delay: 0.1s; }
main > section:nth-of-type(4) { animation-delay: 0.15s; }
main > section:nth-of-type(5) { animation-delay: 0.2s; }
main > section:nth-of-type(6) { animation-delay: 0.25s; }

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

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

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

/* ============ Hero 渐变 Banner ============ */
#hero {
  margin-top: 20px;
  padding: clamp(32px, 5vw, 60px) clamp(20px, 4vw, 48px);
  background: var(--gradient-banner);
  border: none;
  border-radius: var(--radius-lg);
  color: #fff;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  isolation: isolate;
}

#hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 82% 18%, rgba(255, 255, 255, 0.22), transparent 42%),
    radial-gradient(circle at 8% 92%, rgba(0, 200, 255, 0.35), transparent 48%);
  z-index: -1;
  pointer-events: none;
}

#hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
  background-size: 200% 100%;
  animation: shimmer 8s linear infinite;
  z-index: -1;
  pointer-events: none;
}

#hero h1 {
  color: #fff;
  margin: 0 0 1rem;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.18);
}

#hero > p {
  max-width: 860px;
  color: rgba(255, 255, 255, 0.92);
  font-size: clamp(0.95rem, 1.6vw, 1.05rem);
  line-height: 1.85;
}

#hero figure {
  margin: 1.8rem 0 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  padding: 10px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.22);
  transition: transform var(--transition), box-shadow var(--transition);
}

#hero figure:hover {
  transform: translateY(-4px) scale(1.005);
  box-shadow: 0 20px 56px rgba(0, 0, 0, 0.3);
}

#hero figure svg {
  border-radius: calc(var(--radius-md) - 6px);
  width: 100%;
}

#hero figcaption {
  padding: 10px 4px 2px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.85);
  text-align: center;
}

/* ============ 品牌介绍 ============ */
#brand h3 {
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--border);
}

#brand ul {
  display: grid;
  gap: 6px;
  list-style: none;
  padding-left: 0;
}

#brand ul li {
  position: relative;
  padding-left: 26px;
  margin: 0;
  transition: transform var(--transition), color var(--transition);
}

#brand ul li::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 0.72em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient-banner);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

#brand ul li:hover {
  transform: translateX(4px);
  color: var(--text);
}

/* ============ 产品优势卡片 ============ */
#products ul {
  list-style: none;
  padding-left: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
  margin-top: 1rem;
}

#products ul li {
  margin: 0;
  padding: 18px 20px;
  background: var(--gradient-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
  position: relative;
  overflow: hidden;
}

#products ul li::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-banner);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

#products ul li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 200, 255, 0.35);
}

#products ul li:hover::after {
  transform: scaleX(1);
}

/* ============ 解决方案 ============ */
#solutions ul {
  list-style: none;
  padding-left: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

#solutions ul li {
  margin: 0;
  padding: 16px 18px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary-light);
  border-radius: var(--radius-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-left-color var(--transition);
}

#solutions ul li:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
  border-left-color: var(--accent);
}

/* ============ 客户案例 ============ */
#cases blockquote {
  position: relative;
  padding: 18px 22px 18px 52px;
  background: var(--gradient-soft);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition);
}

#cases blockquote::before {
  content: "\201C";
  position: absolute;
  left: 16px;
  top: 4px;
  font-size: 2.6rem;
  line-height: 1;
  color: var(--primary-light);
  opacity: 0.45;
  font-family: Georgia, serif;
}

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

#cases blockquote p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ============ 新闻中心 ============ */
#news article {
  padding: 20px 22px;
  margin-bottom: 14px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

#news article:last-child {
  margin-bottom: 0;
}

#news article:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 200, 255, 0.3);
}

#news article h3 {
  margin-top: 0;
  color: var(--primary-light);
}

#news article p:first-of-type {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

/* ============ 技术文章 ============ */
#articles > p {
  max-width: 820px;
}

#articles article {
  padding: 22px 24px;
  margin-bottom: 16px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
  position: relative;
  overflow: hidden;
}

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

#articles article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 200, 255, 0.3);
}

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

#articles article h3 {
  margin-top: 0;
  color: var(--text);
  transition: color var(--transition);
}

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

#articles article p:first-of-type {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-light);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
}

#articles article a::after {
  content: "\2192";
  transition: transform var(--transition);
}

#articles article a:hover {
  background: var(--gradient-banner);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(0, 200, 255, 0.3);
}

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

/* ============ FAQ 手风琴 ============ */
#faq details {
  margin-bottom: 12px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}

#faq details:last-child {
  margin-bottom: 0;
}

#faq details:hover {
  border-color: rgba(0, 200, 255, 0.3);
  box-shadow: var(--shadow-sm);
}

#faq details[open] {
  border-color: rgba(0, 200, 255, 0.4);
  box-shadow: var(--shadow-md);
}

#faq summary {
  position: relative;
  padding: 16px 48px 16px 20px;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: background var(--transition), color var(--transition);
  -webkit-tap-highlight-color: transparent;
}

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

#faq summary::after {
  content: "";
  position: absolute;
  right: 20px;
  top: 50%;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--primary-light);
  border-bottom: 2px solid var(--primary-light);
  transform: translateY(-70%) rotate(45deg);
  transition: transform var(--transition);
}

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

#faq summary:hover {
  background: var(--gradient-soft);
  color: var(--primary-light);
}

#faq details[open] summary {
  background: var(--gradient-soft);
  color: var(--primary-light);
  border-bottom: 1px solid var(--border);
}

#faq details p {
  margin: 0;
  padding: 16px 20px 18px;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--text-secondary);
  animation: floatIn 0.35s ease both;
}

/* ============ 教程 ============ */
#howto ol {
  counter-reset: step;
  list-style: none;
  padding-left: 0;
  display: grid;
  gap: 12px;
}

#howto ol li {
  counter-increment: step;
  position: relative;
  margin: 0;
  padding: 16px 18px 16px 60px;
  background: var(--gradient-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition);
}

#howto ol li::before {
  content: counter(step);
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-banner);
  border-radius: 50%;
  box-shadow: 0 4px 12px rgba(0, 200, 255, 0.3);
}

#howto ol li:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

#howto > ul {
  list-style: none;
  padding-left: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 10px;
}

#howto > ul li {
  margin: 0;
  padding: 12px 16px 12px 40px;
  position: relative;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), transform var(--transition);
}

#howto > ul li::before {
  content: "\2713";
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-weight: 700;
}

#howto > ul li:hover {
  border-color: rgba(0, 200, 255, 0.35);
  transform: translateY(-2px);
}

/* ============ 联系我们 ============ */
#contact address {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin-bottom: 1rem;
}

#contact address p {
  margin: 0;
  padding: 14px 18px;
  background: var(--gradient-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

#contact address p:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
  border-color: rgba(0, 200, 255, 0.3);
}

#contact address a {
  font-weight: 600;
  word-break: break-all;
}

/* ============ 网站地图 & 友情链接 ============ */
#sitemap ul,
#links ul {
  list-style: none;
  padding-left: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

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

#sitemap ul a,
#links ul a {
  display: inline-block;
  padding: 8px 18px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

#sitemap ul a:hover,
#links ul a:hover {
  color: #fff;
  background: var(--gradient-banner);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 200, 255, 0.3);
}

/* ============ 法律声明 ============ */
#legal h3 {
  color: var(--primary-light);
}

#legal p {
  font-size: 0.92rem;
  line-height: 1.85;
}

/* ============ 页脚 ============ */
footer {
  margin-top: 20px;
  padding: 36px 20px 44px;
  text-align: center;
  background: var(--gradient-banner);
  color: rgba(255, 255, 255, 0.9);
  border-top: none;
  position: relative;
  overflow: hidden;
}

footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(0, 200, 255, 0.25), transparent 60%);
  pointer-events: none;
}

footer p {
  position: relative;
  margin: 0 auto 8px;
  max-width: 900px;
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.7;
}

footer p:first-child {
  font-weight: 600;
  color: #fff;
}

footer p:last-child {
  margin-bottom: 0;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.7);
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .header-inner {
    gap: 14px;
  }

  #site-header nav ul {
    gap: 2px;
  }

  #site-header nav a {
    padding: 7px 10px;
    font-size: 0.86rem;
  }

  #site-header input[type="search"] {
    width: 160px;
  }

  #site-header input[type="search"]:focus {
    width: 180px;
  }
}

@media (max-width: 860px) {
  :root {
    --header-h: 58px;
  }

  .header-inner {
    padding: 8px 16px;
    gap: 10px;
  }

  #site-header nav {
    order: 3;
    flex-basis: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  #site-header nav::-webkit-scrollbar {
    display: none;
  }

  #site-header nav ul {
    flex-wrap: nowrap;
    padding-bottom: 4px;
  }

  #site-header nav a {
    white-space: nowrap;
    font-size: 0.84rem;
  }

  #site-header form {
    margin-left: auto;
  }

  #site-header input[type="search"] {
    width: 140px;
    font-size: 0.84rem;
  }

  #site-header input[type="search"]:focus {
    width: 160px;
  }

  #site-header button[type="submit"] {
    padding: 8px 14px;
    font-size: 0.84rem;
  }

  main {
    padding: 0 14px 44px;
  }

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

  #hero {
    padding: 28px 20px;
  }

  #hero figure {
    margin-top: 1.4rem;
  }

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

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

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

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

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

  .logo {
    font-size: 1.02rem;
  }

  #site-header input[type="search"] {
    width: 116px;
    padding: 7px 12px;
  }

  #site-header input[type="search"]:focus {
    width: 130px;
  }

  #site-header button[type="submit"] {
    padding: 7px 12px;
  }

  main > section {
    padding: 20px 14px;
    border-radius: var(--radius-sm);
  }

  #hero {
    padding: 24px 16px;
    border-radius: var(--radius-md);
  }

  h2 {
    padding-left: 13px;
  }

  h2::before {
    width: 4px;
  }

  #articles article {
    padding: 18px 16px;
  }

  #news article {
    padding: 16px;
  }

  #faq summary {
    padding: 14px 42px 14px 16px;
    font-size: 0.92rem;
  }

  #faq details p {
    padding: 14px 16px 16px;
    font-size: 0.9rem;
  }

  #howto ol li {
    padding: 14px 14px 14px 54px;
  }

  #howto ol li::before {
    left: 12px;
    width: 28px;
    height: 28px;
    font-size: 0.82rem;
  }

  #cases blockquote {
    padding: 16px 16px 16px 44px;
  }

  #cases blockquote::before {
    left: 12px;
    font-size: 2.2rem;
  }

  #sitemap ul a,
  #links ul a {
    padding: 7px 14px;
    font-size: 0.85rem;
  }

  footer {
    padding: 28px 16px 36px;
  }

  footer p {
    font-size: 0.8rem;
  }
}

/* ============ 动效降级 ============ */
@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;
  }
}

/* ============ 打印 ============ */
@media print {
  #site-header,
  footer,
  #hero::after,
  #hero::before {
    display: none !important;
  }

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

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

  a {
    color: #000;
    text-decoration: underline;
  }
}