:root {
  --primary: #e94560;
  --primary-dark: #c73650;
  --primary-light: #ff6b81;
  --secondary: #0f3460;
  --accent: #533483;
  --bg-dark: #1a1a2e;
  --bg-darker: #16213e;
  --bg-card: #ffffff;
  --bg-card-dark: #1e2749;
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a6a;
  --text-light: #ffffff;
  --text-muted: #8888a8;
  --border-color: #e8e8f0;
  --border-dark: #2a3555;
  --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.08);
  --shadow-md: 0 8px 24px rgba(26, 26, 46, 0.12);
  --shadow-lg: 0 16px 48px rgba(26, 26, 46, 0.16);
  --shadow-glow: 0 0 24px rgba(233, 69, 96, 0.35);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.35);
  --gradient-hero: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #0f3460 70%, #533483 100%);
  --gradient-btn: linear-gradient(135deg, #e94560 0%, #533483 100%);
  --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.9), rgba(255,255,255,0.6));
}

[data-theme="dark"] {
  --bg-card: #1e2749;
  --bg-card-dark: #1e2749;
  --text-primary: #e8e8f0;
  --text-secondary: #b0b0c8;
  --text-muted: #7a7a98;
  --border-color: #2a3555;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --glass-bg: rgba(30, 39, 73, 0.75);
  --glass-border: rgba(255, 255, 255, 0.08);
  --gradient-card: linear-gradient(145deg, rgba(30,39,73,0.9), rgba(30,39,73,0.6));
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-primary);
  background: var(--bg-dark);
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: var(--gradient-hero);
  opacity: 0.03;
  pointer-events: none;
  z-index: 0;
}

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

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

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

ul,
ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

input,
textarea {
  font-family: inherit;
  font-size: inherit;
  outline: none;
  border: none;
}

::selection {
  background: var(--primary);
  color: #fff;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-light);
}

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

#site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}

.logo a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-weight: 700;
}

.logo svg {
  transition: transform var(--transition);
  flex-shrink: 0;
}

.logo a:hover svg {
  transform: rotate(-10deg) scale(1.08);
}

.logo-text {
  font-size: 1.25rem;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

#main-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}

#main-nav a {
  display: block;
  padding: 8px 14px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  position: relative;
  transition: all var(--transition);
  white-space: nowrap;
}

#main-nav a::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-btn);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width var(--transition);
}

#main-nav a:hover {
  color: var(--primary);
  background: rgba(233, 69, 96, 0.08);
}

#main-nav a:hover::after {
  width: 60%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

#search-form {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  overflow: hidden;
  transition: all var(--transition);
}

[data-theme="dark"] #search-form {
  background: rgba(255, 255, 255, 0.06);
}

#search-form:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.15);
  background: rgba(255, 255, 255, 0.9);
}

[data-theme="dark"] #search-form:focus-within {
  background: rgba(255, 255, 255, 0.1);
}

#search-input {
  width: 160px;
  padding: 9px 14px;
  background: transparent;
  color: var(--text-primary);
  font-size: 0.88rem;
  transition: width var(--transition);
}

#search-input::placeholder {
  color: var(--text-muted);
}

#search-input:focus {
  width: 220px;
}

#search-form button {
  padding: 9px 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  transition: color var(--transition);
}

#search-form button:hover {
  color: var(--primary);
}

#dark-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

[data-theme="dark"] #dark-toggle {
  background: rgba(255, 255, 255, 0.06);
}

#dark-toggle:hover {
  background: var(--primary);
  color: #fff;
  transform: rotate(20deg) scale(1.1);
  box-shadow: var(--shadow-glow);
}

#menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1.2rem;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

[data-theme="dark"] #menu-toggle {
  background: rgba(255, 255, 255, 0.06);
}

#menu-toggle:hover {
  background: var(--primary);
  color: #fff;
}

/* ========== Banner轮播 ========== */
#banner {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--gradient-hero);
}

#banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(233, 69, 96, 0.25) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(83, 52, 131, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(15, 52, 96, 0.2) 0%, transparent 70%);
  animation: bannerGlow 12s ease-in-out infinite alternate;
}

@keyframes bannerGlow {
  0% { opacity: 0.6; transform: scale(1); }
  100% { opacity: 1; transform: scale(1.1); }
}

.banner-slider {
  position: relative;
  width: 100%;
  max-width: 900px;
  padding: 60px 24px;
  z-index: 1;
}

.banner-slide {
  display: none;
  text-align: center;
  animation: slideFadeIn 0.8s ease;
}

.banner-slide.active {
  display: block;
}

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

.banner-slide h2 {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 1px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  background: linear-gradient(135deg, #fff 0%, #ffd6de 50%, #c8b6ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.banner-slide p {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: rgba(255, 255, 255, 0.82);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.9;
}

.banner-dots {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 2;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  transition: all var(--transition);
  position: relative;
}

.dot.active {
  background: var(--primary);
  width: 36px;
  border-radius: 6px;
  box-shadow: 0 0 16px rgba(233, 69, 96, 0.6);
}

.dot:hover {
  background: rgba(255, 255, 255, 0.7);
  transform: scale(1.2);
}

/* ========== 面包屑导航 ========== */
#breadcrumb {
  max-width: 1280px;
  margin: 0 auto;
  padding: 20px 24px 0;
}

#breadcrumb ol {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

#breadcrumb li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

#breadcrumb li + li::before {
  content: "›";
  color: var(--text-muted);
  font-size: 1rem;
}

#breadcrumb a {
  color: var(--text-secondary);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

#breadcrumb a:hover {
  color: var(--primary);
  background: rgba(233, 69, 96, 0.08);
}

/* ========== 通用 Section 样式 ========== */
section {
  position: relative;
  z-index: 1;
}

section > h2 {
  max-width: 1280px;
  margin: 0 auto;
  padding: 48px 24px 24px;
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--text-primary);
  position: relative;
  letter-spacing: 0.5px;
}

section > h2::after {
  content: "";
  display: block;
  width: 56px;
  height: 4px;
  margin-top: 12px;
  background: var(--gradient-btn);
  border-radius: 2px;
  box-shadow: 0 2px 12px rgba(233, 69, 96, 0.4);
}

section > article,
section > details,
section > blockquote,
section > address,
section > ul,
section > ol,
section > p {
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ========== 首屏核心简介 ========== */
#hero-intro {
  max-width: 1280px;
  margin: 0 auto;
  padding: 48px 24px 32px;
}

#hero-intro h1 {
  font-size: clamp(1.5rem, 3.5vw, 2.4rem);
  font-weight: 800;
  line-height: 1.35;
  color: var(--text-primary);
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.hero-answer {
  font-size: 1.02rem;
  line-height: 2;
  color: var(--text-secondary);
  padding: 24px 28px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: 36px;
  transition: all var(--transition);
}

.hero-answer:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-item {
  text-align: center;
  padding: 28px 16px;
  background: var(--gradient-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-btn);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.stat-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.stat-item:hover::before {
  transform: scaleX(1);
}

.stat-number {
  display: block;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ========== 品牌介绍 ========== */
#brand-intro article {
  margin-bottom: 24px;
}

#brand-intro h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 28px 0 12px;
  padding-left: 14px;
  border-left: 3px solid var(--primary);
  line-height: 1.4;
}

#brand-intro p {
  color: var(--text-secondary);
  line-height: 2;
  margin-bottom: 12px;
  text-align: justify;
}

#brand-intro ul {
  padding: 20px 24px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

#brand-intro li {
  position: relative;
  padding: 8px 0 8px 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  border-bottom: 1px dashed var(--border-color);
}

#brand-intro li:last-child {
  border-bottom: none;
}

#brand-intro li::before {
  content: "◆";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-size: 0.7rem;
  top: 12px;
}

/* ========== 主营产品 ========== */
#products article {
  margin-bottom: 28px;
  padding: 28px 32px;
  background: var(--gradient-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

#products article::after {
  content: "";
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(233, 69, 96, 0.06) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

#products article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(233, 69, 96, 0.3);
}

#products article:hover::after {
  opacity: 1;
}

#products h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

#products h3::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient-btn);
  box-shadow: 0 0 12px rgba(233, 69, 96, 0.6);
  flex-shrink: 0;
}

#products h4 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 20px 0 12px;
}

#products p {
  color: var(--text-secondary);
  line-height: 2;
  margin-bottom: 10px;
  text-align: justify;
}

#products ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 10px;
  margin-top: 14px;
}

#products li {
  position: relative;
  padding: 10px 14px 10px 38px;
  background: rgba(233, 69, 96, 0.05);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
  transition: all var(--transition);
}

#products li::before {
  content: "✓";
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary);
  font-weight: 700;
  font-size: 0.9rem;
}

#products li:hover {
  background: rgba(233, 69, 96, 0.12);
  transform: translateX(4px);
}

/* ========== 解决方案 ========== */
#solutions article {
  margin-bottom: 24px;
  padding: 24px 28px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border-left: 4px solid var(--accent);
}

#solutions article:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
  border-left-color: var(--primary);
}

#solutions h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

#solutions p {
  color: var(--text-secondary);
  line-height: 2;
  text-align: justify;
}

/* ========== 行业应用 ========== */
#industry article {
  margin-bottom: 24px;
  padding: 24px 28px;
  background: var(--gradient-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

#industry article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-btn);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition);
}

#industry article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

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

#industry h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

#industry p {
  color: var(--text-secondary);
  line-height: 2;
  text-align: justify;
}

/* ========== 客户案例 ========== */
#cases article {
  margin-bottom: 24px;
  padding: 28px 32px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
}

#cases article::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle at top right, rgba(233, 69, 96, 0.12), transparent 70%);
  border-radius: 0 var(--radius-lg) 0 100%;
  pointer-events: none;
}

#cases article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(233, 69, 96, 0.3);
}

#cases h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

#cases p {
  color: var(--text-secondary);
  line-height: 2;
  text-align: justify;
}

/* ========== 客户评价 ========== */
#testimonials blockquote {
  margin-bottom: 20px;
  padding: 28px 32px;
  background: var(--gradient-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

#testimonials blockquote::before {
  content: """;
  position: absolute;
  top: -10px;
  left: 20px;
  font-size: 5rem;
  color: var(--primary);
  opacity: 0.15;
  font-family: Georgia, serif;
  line-height: 1;
  pointer-events: none;
}

#testimonials blockquote:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--shadow-lg);
}

#testimonials blockquote p {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.9;
  font-style: italic;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

#testimonials cite {
  display: block;
  font-style: normal;
  font-size: 0.88rem;
  color: var(--primary);
  font-weight: 600;
  text-align: right;
}

/* ========== 新闻中心 ========== */
.news-item {
  margin-bottom: 20px;
  padding: 24px 28px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
}

.news-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(233, 69, 96, 0.3);
}

.news-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.5;
}

.news-item h3 a {
  color: var(--text-primary);
  transition: color var(--transition);
}

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

.news-item time {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  padding: 3px 10px;
  background: rgba(233, 69, 96, 0.08);
  border-radius: 50px;
}

.news-item p {
  color: var(--text-secondary);
  line-height: 1.9;
  font-size: 0.95rem;
  margin-bottom: 12px;
  text-align: justify;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
  padding: 6px 14px;
  border-radius: 50px;
  background: rgba(233, 69, 96, 0.08);
  transition: all var(--transition);
}

.read-more:hover {
  background: var(--primary);
  color: #fff;
  transform: translateX(4px);
  box-shadow: 0 4px 16px rgba(233, 69, 96, 0.4);
}

/* ========== 技术文章 ========== */
.article-item {
  margin-bottom: 20px;
  padding: 24px 28px;
  background: var(--gradient-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  overflow: hidden;
}

.article-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-btn);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.article-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.article-item:hover::before {
  transform: scaleX(1);
}

.article-item h3 {
  font-size: 1.08rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.5;
}

.article-item h3 a {
  color: var(--text-primary);
  transition: color var(--transition);
}

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

.article-item time {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  padding: 3px 10px;
  background: rgba(83, 52, 131, 0.08);
  border-radius: 50px;
}

.article-item p {
  color: var(--text-secondary);
  line-height: 1.9;
  font-size: 0.95rem;
  margin-bottom: 12px;
  text-align: justify;
}

/* ========== 行业知识 ========== */
#knowledge article {
  margin-bottom: 24px;
  padding: 24px 28px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

#knowledge article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(83, 52, 131, 0.3);
}

#knowledge h3 {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  padding-left: 14px;
  border-left: 3px solid var(--accent);
}

#knowledge p {
  color: var(--text-secondary);
  line-height: 2;
  text-align: justify;
}

/* ========== FAQ ========== */
#faq details {
  margin-bottom: 14px;
  padding: 0;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  overflow: hidden;
}

#faq details:hover {
  border-color: rgba(233, 69, 96, 0.3);
  box-shadow: var(--shadow-md);
}

#faq details[open] {
  border-color: rgba(233, 69, 96, 0.4);
  box-shadow: var(--shadow-md);
}

#faq summary {
  padding: 18px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: all var(--transition);
  position: relative;
}

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

#faq summary::after {
  content: "+";
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform var(--transition);
  line-height: 1;
}

#faq details[open] summary::after {
  transform: rotate(45deg);
}

#faq summary:hover {
  background: rgba(233, 69, 96, 0.05);
  color: var(--primary);
}

#faq details p {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  line-height: 2;
  font-size: 0.95rem;
  text-align: justify;
  animation: faqFadeIn 0.4s ease;
}

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

/* ========== HowTo 使用教程 ========== */
#howto article {
  margin-bottom: 24px;
  padding: 24px 28px;
  background: var(--gradient-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

#howto article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

#howto h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

#howto h3::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient-btn);
  box-shadow: 0 0 12px rgba(233, 69, 96, 0.6);
  flex-shrink: 0;
}

#howto p {
  color: var(--text-secondary);
  line-height: 2;
  text-align: justify;
}

#howto ul,
#howto ol {
  padding-left: 0;
  counter-reset: step-counter;
}

#howto ul li {
  position: relative;
  padding: 10px 0 10px 30px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.9;
  border-bottom: 1px dashed var(--border-color);
}

#howto ul li:last-child {
  border-bottom: none;
}

#howto ul li::before {
  content: "●";
  position: absolute;
  left: 6px;
  color: var(--primary);
  font-size: 0.6rem;
  top: 16px;
}

#howto ol {
  list-style: none;
}

#howto ol li {
  position: relative;
  padding: 12px 0 12px 48px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.9;
  counter-increment: step-counter;
  border-bottom: 1px dashed var(--border-color);
}

#howto ol li:last-child {
  border-bottom: none;
}

#howto ol li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 12px;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-btn);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 700;
  border-radius: 50%;
  box-shadow: 0 2px 10px rgba(233, 69, 96, 0.35);
}

/* ========== 联系我们 ========== */
#contact address {
  font-style: normal;
  padding: 28px 32px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

#contact address:hover {
  box-shadow: var(--shadow-md);
}

#contact p {
  padding: 10px 0;
  color: var(--text-secondary);
  line-height: 1.9;
  font-size: 0.95rem;
  border-bottom: 1px dashed var(--border-color);
  transition: all var(--transition);
}

#contact p:last-child {
  border-bottom: none;
}

#contact p:hover {
  padding-left: 8px;
  color: var(--primary);
}

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

/* ========== 网站地图 ========== */
#sitemap ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
  padding: 0 24px;
}

#sitemap li {
  list-style: none;
}

#sitemap a {
  display: block;
  padding: 10px 16px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-align: center;
  transition: all var(--transition);
}

#sitemap a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(233, 69, 96, 0.35);
}

/* ========== 友情链接 ========== */
#links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 0 24px;
}

#links li {
  list-style: none;
}

#links a {
  display: inline-block;
  padding: 8px 20px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  color: var(--text-secondary);
  font-size: 0.88rem;
  transition: all var(--transition);
}

#links a:hover {
  background: var(--gradient-btn);
  color: #fff;
  border-color: transparent;
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 6px 20px rgba(233, 69, 96, 0.35);
}

/* ========== 返回顶部 ========== */
#back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-btn);
  color: #fff;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(233, 69, 96, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition);
  z-index: 999;
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top:hover {
  transform: translateY(-4px) scale(1.1);
  box-shadow: 0 12px 32px rgba(233, 69, 96, 0.55);
}

#back-to-top:active {
  transform: translateY(-2px) scale(1.05);
}

/* ========== 页脚 ========== */
#site-footer {
  margin-top: 64px;
  background: var(--bg-darker);
  color: rgba(255, 255, 255, 0.75);
  position: relative;
  overflow: hidden;
}

#site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-btn);
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 56px 24px 40px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
}

.footer-section h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}

.footer-section h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 3px;
  background: var(--gradient-btn);
  border-radius: 2px;
}

.footer-section p {
  font-size: 0.88rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 8px;
}

.footer-section ul li {
  margin-bottom: 10px;
}

.footer-section ul a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.88rem;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-section ul a::before {
  content: "›";
  color: var(--primary);
  font-size: 1.1rem;
  transition: transform var(--transition);
}

.footer-section ul a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

.footer-section ul a:hover::before {
  transform: translateX(2px);
}

.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.45);
  line-height: 1.9;
}

/* ========== 隐私政策 / 免责声明 / 版权声明 / 服务承诺 / 安全说明 ========== */
#privacy,
#disclaimer,
#copyright,
#service-promise,
#security {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

#privacy > h2,
#disclaimer > h2,
#copyright > h2,
#service-promise > h2,
#security > h2 {
  padding-left: 0;
  padding-right: 0;
}

#privacy h3,
#service-promise h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 20px 0 10px;
  padding-left: 12px;
  border-left: 3px solid var(--primary);
}

#privacy p,
#disclaimer p,
#copyright p,
#security p,
#service-promise p {
  color: var(--text-secondary);
  line-height: 2;
  margin-bottom: 10px;
  text-align: justify;
  font-size: 0.95rem;
}

#service-promise ul {
  padding: 20px 24px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: 16px;
}

#service-promise li {
  position: relative;
  padding: 8px 0 8px 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  border-bottom: 1px dashed var(--border-color);
}

#service-promise li:last-child {
  border-bottom: none;
}

#service-promise li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

/* ========== 滚动动画 ========== */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ========== 响应式布局 ========== */
@media (max-width: 1024px) {
  .header-inner {
    padding: 0 16px;
  }

  #main-nav ul {
    gap: 2px;
  }

  #main-nav a {
    padding: 8px 10px;
    font-size: 0.84rem;
  }

  #search-input {
    width: 120px;
  }

  #search-input:focus {
    width: 160px;
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  html {
    scroll-padding-top: 64px;
  }

  .header-inner {
    height: 60px;
    padding: 0 12px;
  }

  .logo-text {
    font-size: 1.05rem;
  }

  .logo svg {
    width: 32px;
    height: 32px;
  }

  #main-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid var(--glass-border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.3s ease;
    opacity: 0;
    z-index: 999;
  }

  #main-nav.open {
    max-height: 500px;
    opacity: 1;
    overflow-y: auto;
  }

  #main-nav ul {
    flex-direction: column;
    padding: 12px 16px;
    gap: 2px;
  }

  #main-nav a {
    padding: 12px 16px;
    font-size: 0.92rem;
    border-radius: var(--radius-sm);
    width: 100%;
  }

  #main-nav a::after {
    display: none;
  }

  #main-nav a:hover {
    background: rgba(233, 69, 96, 0.1);
  }

  #menu-toggle {
    display: flex;
  }

  #search-form {
    display: none;
  }

  .header-actions {
    gap: 8px;
  }

  #dark-toggle,
  #menu-toggle {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }

  #banner {
    min-height: 320px;
  }

  .banner-slider {
    padding: 40px 20px;
  }

  .banner-dots {
    bottom: 20px;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .stat-item {
    padding: 20px 12px;
  }

  section > h2 {
    padding: 36px 16px 18px;
  }

  section > article,
  section > details,
  section > blockquote,
  section > address,
  section > ul,
  section > ol,
  section > p {
    padding-left: 16px;
    padding-right: 16px;
  }

  #hero-intro {
    padding: 32px 16px 24px;
  }

  .hero-answer {
    padding: 18px 20px;
    font-size: 0.95rem;
  }

  #brand-intro h3,
  #products h3,
  #solutions h3,
  #industry h3,
  #cases h3,
  #knowledge h3,
  #howto h3 {
    font-size: 1.05rem;
  }

  #products article,
  #solutions article,
  #industry article,
  #cases article,
  #knowledge article,
  #howto article {
    padding: 20px;
  }

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

  #testimonials blockquote {
    padding: 20px 22px;
  }

  .news-item,
  .article-item {
    padding: 20px;
  }

  #faq summary {
    padding: 14px 18px;
    font-size: 0.92rem;
  }

  #faq details p {
    padding: 0 18px 16px;
    font-size: 0.9rem;
  }

  #contact address {
    padding: 20px;
  }

  #sitemap ul {
    grid-template-columns: repeat(2, 1fr);
    padding: 0 16px;
  }

  #links ul {
    padding: 0 16px;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 40px 16px 32px;
  }

  .footer-bottom {
    padding: 20px 16px;
  }

  #back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
    font-size: 1.1rem;
  }

  #privacy,
  #disclaimer,
  #copyright,
  #service-promise,
  #security {
    padding: 0 16px;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 15px;
  }

  .banner-slide h2 {
    font-size: 1.35rem;
  }

  .banner-slide p {
    font-size: 0.88rem;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .stat-item {
    padding: 16px 10px;
  }

  .stat-number {
    font-size: 1.4rem;
  }

  .stat-label {
    font-size: 0.78rem;
  }

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

  #links ul {
    gap: 8px;
  }

  #links a {
    padding: 6px 14px;
    font-size: 0.82rem;
  }

  .read-more {
    font-size: 0.82rem;
    padding: 5px 12px;
  }
}

/* ========== 打印样式 ========== */
@media print {
  #site-header,
  #banner,
  #back-to-top,
  #site-footer,
  .header-actions {
    display: none !important;
  }

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

  section > h2::after {
    background: #000;
  }

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

/* ========== 减少动画偏好 ========== */
@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;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ========== 高对比度模式 ========== */
@media (prefers-contrast: high) {
  :root {
    --border-color: #000;
    --text-secondary: #000;
  }

  [data-theme="dark"] {
    --border-color: #fff;
    --text-secondary: #fff;
  }
}