/* ============================================
   WOMMER 沃姆 - 百重云设计风格
   基于 baichongyun 设计系统重构
   ============================================ */

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

:root {
  --brand-primary: #1A6FFF;
  --brand-primary-light: #4A8FFF;
  --brand-primary-lighter: #8FBFFF;
  --brand-primary-dark: #0D5BCC;
  --brand-primary-darker: #0A3D99;
  --brand-accent: #FF6B35;
  --brand-accent-light: #FF8F5E;
  --brand-accent-dark: #E55A26;
  --brand-dark-bg: #0D1B3E;
  --brand-dark-bg-alt: #162350;
  --brand-light-bg: #F5F7FA;
  --brand-light-bg-alt: #EDF0F5;
  --brand-white: #FFFFFF;
  --brand-text: #333333;
  --brand-text-secondary: #888888;
  --brand-text-light: #B0B8C8;
  --brand-text-dark-bg: #C8D0E0;
  --brand-success: #00B578;
  --brand-warning: #FF9500;
  --brand-error: #FF4D4F;
  --brand-border: #E5E8ED;
  --brand-border-light: #F0F2F5;
  --brand-border-dark: #D0D5DD;

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.8125rem;
  --font-size-base: 0.9375rem;
  --font-size-lg: 1.0625rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  --fw-normal: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;

  --lh-tight: 1.15;
  --lh-snug: 1.3;
  --lh-normal: 1.5;
  --lh-relaxed: 1.7;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(13, 27, 62, 0.05);
  --shadow-md: 0 2px 8px rgba(13, 27, 62, 0.06);
  --shadow-lg: 0 4px 16px rgba(13, 27, 62, 0.08);
  --shadow-xl: 0 8px 32px rgba(13, 27, 62, 0.1);
  --shadow-card: 0 2px 12px rgba(13, 27, 62, 0.04);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  --container-max: min(75vw, 1400px);
  --container-narrow: 1000px;
  --nav-height: 72px;
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.35s ease;

  /* 兼容 product.css 等旧变量名 */
  --primary: var(--brand-primary);
  --primary-light: var(--brand-primary-light);
  --primary-dark: var(--brand-primary-dark);
  --accent: var(--brand-accent);
  --bg-white: var(--brand-white);
  --bg-alt: var(--brand-light-bg);
  --bg-dark: var(--brand-dark-bg);
  --text: var(--brand-text);
  --text-secondary: var(--brand-text-secondary);
  --text-light: var(--brand-text-light);
  --border: var(--brand-border);
  --transition: var(--transition-base);

  /* baichong 设计系统兼容 */
  --baichong-color-primary: #1A6FFF;
  --baichong-color-primary-light: #4A8FFF;
  --baichong-color-primary-lighter: #8FBFFF;
  --baichong-color-primary-dark: #0D5BCC;
  --baichong-color-primary-darker: #0A3D99;
  --baichong-color-accent: #FF6B35;
  --baichong-color-accent-light: #FF8F5E;
  --baichong-color-accent-dark: #E55A26;
  --baichong-color-dark-bg: #0D1B3E;
  --baichong-color-dark-bg-alt: #162350;
  --baichong-color-light-bg: #F5F7FA;
  --baichong-color-light-bg-alt: #EDF0F5;
  --baichong-color-white: #FFFFFF;
  --baichong-color-text: #333333;
  --baichong-color-text-secondary: #888888;
  --baichong-color-text-light: #B0B8C8;
  --baichong-color-text-white: #FFFFFF;
  --baichong-color-text-dark-bg: #C8D0E0;
  --baichong-state-success: #00B578;
  --baichong-state-warning: #FF9500;
  --baichong-state-error: #FF4D4F;
  --baichong-state-info: #1A6FFF;
  --baichong-color-border: #E5E8ED;
  --baichong-color-border-light: #F0F2F5;
  --baichong-color-border-dark: #D0D5DD;
  --baichong-font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --baichong-container-max: min(75vw, 1400px);
  --baichong-nav-height: 72px;
  --baichong-radius-sm: 4px;
  --baichong-radius-md: 8px;
  --baichong-radius-lg: 12px;
  --baichong-radius-xl: 16px;
  --baichong-radius-full: 9999px;
  --baichong-space-4: 1rem;
  --baichong-space-8: 2rem;
  --baichong-space-16: 4rem;
  --baichong-space-20: 5rem;
}

.baichong-container {
  max-width: var(--baichong-container-max);
  margin: 0 auto;
  padding: 0 var(--baichong-space-8);
}
.baichong-section {
  padding: var(--baichong-space-20) 0;
}
.baichong-section-alt {
  padding: var(--baichong-space-20) 0;
  background-color: var(--baichong-color-light-bg);
}
.baichong-section-title {
  text-align: center;
  margin-bottom: var(--baichong-space-16);
}
.baichong-section-title h2 {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--baichong-color-text);
  margin-bottom: 1rem;
  line-height: 1.3;
}
.baichong-section-title p {
  font-size: 1.0625rem;
  color: var(--baichong-color-text-secondary);
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.7;
}
.baichong-card {
  background: var(--baichong-color-white);
  border: 1px solid var(--baichong-color-border);
  border-radius: var(--baichong-radius-lg);
  padding: 2rem;
  transition: all 0.25s ease;
}
.baichong-card:hover {
  box-shadow: 0 4px 20px rgba(13, 27, 62, 0.06);
  border-color: var(--baichong-color-border-dark);
  transform: translateY(-2px);
}
.baichong-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background: rgba(26, 111, 255, 0.08);
  color: var(--baichong-color-primary);
  font-size: 0.8125rem;
  font-weight: 500;
  border-radius: 9999px;
}
.baichong-body-sm {
  font-family: var(--baichong-font-family);
  font-size: 0.8125rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--baichong-color-text-secondary);
}
.baichong-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 12px 28px;
  background: var(--baichong-color-primary);
  color: var(--baichong-color-white);
  font-family: var(--baichong-font-family);
  font-size: 0.9375rem;
  font-weight: 600;
  border: none;
  border-radius: var(--baichong-radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.25s ease;
}
.baichong-btn-primary:hover {
  background: var(--baichong-color-primary-dark);
  color: var(--baichong-color-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26, 111, 255, 0.3);
}
.baichong-btn-accent {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 12px 28px;
  background: var(--baichong-color-accent);
  color: var(--baichong-color-white);
  font-family: var(--baichong-font-family);
  font-size: 0.9375rem;
  font-weight: 600;
  border: none;
  border-radius: var(--baichong-radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.25s ease;
}
.baichong-btn-accent:hover {
  background: var(--baichong-color-accent-dark);
  color: var(--baichong-color-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}
.baichong-btn-outline-light {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 12px 28px;
  background: transparent;
  color: var(--baichong-color-white);
  font-family: var(--baichong-font-family);
  font-size: 0.9375rem;
  font-weight: 600;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--baichong-radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.25s ease;
}
.baichong-btn-outline-light:hover {
  border-color: var(--baichong-color-white);
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}
.baichong-gradient-text {
  background: linear-gradient(135deg, var(--baichong-color-primary), var(--baichong-color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-family);
  color: var(--brand-text);
  line-height: var(--lh-relaxed);
  background: var(--brand-white);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand-primary); text-decoration: none; transition: color var(--transition-base); }
a:hover { color: var(--brand-primary-dark); }
img { max-width: 100%; height: auto; display: block; }

/* ===== Container ===== */
.container, .baichong-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-8);
}
@media(max-width:768px) {
  .container, .baichong-container { max-width: 100%; padding: 0 15px; }
}

/* ===== Hero 幻灯片 ===== */
.hero-slider {
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
  height: 75vh;
  min-height: 400px;
  max-height: 800px;
}
@media(max-width:768px) {
  .hero-slider { height: 70vh; min-height: 360px; max-height: 600px; }
}
.hero-slides-wrapper {
  position: absolute;
  inset: 0;
}
.hero-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  opacity: 0;
  transition: opacity 0.8s ease;
  z-index: 0;
}
.hero-slide.active { opacity: 1; z-index: 1; }
.hero-slide-bg-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: radial-gradient(circle at 25% 50%, #ffffff 1px, transparent 1px), radial-gradient(circle at 75% 50%, #ffffff 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-slide-content {
  position: relative;
  z-index: 2;
  width: 100%;
}
.hero-slide-text {
  max-width: 800px;
  padding-top: 0;
}
@media(max-width:768px) {
  .hero-slide-text { max-width: 100%; text-align: center; padding-top: 60px; }
  .hero-slide-actions { justify-content: center; }
}
.hero-slide-title {
  font-size: clamp(26px, 3.2vw, 44px);
  font-weight: var(--fw-bold);
  color: #fff;
  line-height: 1.2;
  margin: 0 0 18px;
  max-width: 900px;
}
.hero-slide-desc {
  font-size: var(--font-size-lg);
  line-height: var(--lh-relaxed);
  color: rgba(255,255,255,0.72);
  margin: 0 0 28px;
  max-width: 750px;
}
@media(max-width:768px) {
  .hero-slide-desc { max-width: 100%; }
}
.hero-slide-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* 入场动画 */
.hero-slide.active .hero-slide-title {
  animation: heroFadeUp 0.7s ease forwards;
}
.hero-slide.active .hero-slide-desc {
  animation: heroFadeUp 0.7s ease 0.15s forwards;
  opacity: 0;
}
.hero-slide.active .hero-slide-actions {
  animation: heroFadeUp 0.7s ease 0.3s forwards;
  opacity: 0;
}
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 导航点 */
.hero-slider-dots {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  gap: 12px;
}
.hero-slider-dots .dot {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.35);
  cursor: pointer;
  transition: all 0.3s ease;
}
.hero-slider-dots .dot.active {
  background: #fff;
  transform: scale(1.2);
}

/* 左右箭头 */
.hero-slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.08);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(4px);
}
.hero-slider-arrow:hover {
  background: rgba(255,255,255,0.18);
  border-color: rgba(255,255,255,0.4);
}
.hero-slider-prev { left: 24px; }
.hero-slider-next { right: 24px; }
@media(max-width:768px) {
  .hero-slider-arrow { display: none; }
}

/* ===== 核心服务 - Premium Design ===== */
.services-premium {
  position: relative;
  padding: 100px 0;
  background: linear-gradient(160deg, #f9faff 0%, #f0f4ff 40%, #e8eefb 100%);
  overflow: hidden;
}
.services-bg-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.3;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(26,111,255,0.04) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(26,111,255,0.03) 0%, transparent 50%),
    radial-gradient(circle at 50% 80%, rgba(26,111,255,0.02) 0%, transparent 50%);
}
.services-bg-pattern::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(30deg, rgba(26,111,255,0.03) 12%, transparent 12.5%, transparent 87%, rgba(26,111,255,0.03) 87.5%),
    linear-gradient(150deg, rgba(26,111,255,0.03) 12%, transparent 12.5%, transparent 87%, rgba(26,111,255,0.03) 87.5%);
  background-size: 60px 60px;
}
.services-bg-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26,111,255,0.06) 0%, transparent 70%);
  top: -200px;
  right: -100px;
  pointer-events: none;
}
.services-container { position: relative; z-index: 2; }
.services-header { text-align: center; margin-bottom: 56px; }

/* ===== Services Entrance Animations ===== */
.animate-title,
.animate-subtitle,
.animate-card-1,
.animate-card-2,
.animate-card-3,
.animate-card-4 {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate-title.in-view,
.animate-subtitle.in-view,
.animate-card-1.in-view,
.animate-card-2.in-view,
.animate-card-3.in-view,
.animate-card-4.in-view {
  opacity: 1;
  transform: translateY(0);
}
.animate-title { transition-delay: 0s; }
.animate-subtitle { transition-delay: 0.12s; }
.animate-card-1 { transition-delay: 0.24s; }
.animate-card-2 { transition-delay: 0.36s; }
.animate-card-3 { transition-delay: 0.48s; }
.animate-card-4 { transition-delay: 0.6s; }

.services-header h2 {
  font-size: clamp(28px, 3vw, 40px);
  font-weight: var(--fw-bold);
  color: #0a1628;
  margin: 0 0 14px;
  line-height: 1.25;
}
.services-title-highlight {
  background: linear-gradient(135deg, var(--brand-primary) 0%, #7cafff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.services-subtitle {
  font-size: var(--font-size-base);
  color: var(--brand-text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.6;
}
.services-masonry {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
}
@media(min-width:769px) {
  .services-masonry {
    grid-template-areas:
      "card1 card2"
      "card3 card4";
  }
  .service-card-1 { grid-area: card1; }
  .service-card-2 { grid-area: card2; margin-top: 40px; }
  .service-card-3 { grid-area: card3; margin-bottom: 40px; }
  .service-card-4 { grid-area: card4; }
}
@media(max-width:768px) {
  .services-masonry { grid-template-columns: 1fr; gap: 18px; }
  .services-premium { padding: 60px 0; }
}
.service-card {
  position: relative;
  background: rgba(255,255,255,0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.8);
  border-radius: 20px;
  padding: 36px 32px;
  overflow: hidden;
  transition: all 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  cursor: default;
  box-shadow:
    0 1px 3px rgba(0,0,0,0.02),
    0 4px 20px rgba(0,0,0,0.02);
}
.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 20px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(255,255,255,0.3), rgba(255,255,255,0.9));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.service-card:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow:
    0 8px 30px rgba(26,111,255,0.08),
    0 20px 60px rgba(0,0,0,0.04);
  border-color: rgba(26,111,255,0.15);
  background: rgba(255,255,255,0.92);
}
.service-card-bg-number {
  position: absolute;
  right: -10px;
  bottom: -20px;
  font-size: 120px;
  font-weight: 900;
  line-height: 1;
  color: rgba(26,111,255,0.03);
  letter-spacing: -0.04em;
  transition: all 0.5s ease;
  user-select: none;
  pointer-events: none;
}
.service-card:hover .service-card-bg-number {
  color: rgba(26,111,255,0.07);
  transform: scale(1.05) translateX(-4px);
}
.service-card-inner { position: relative; z-index: 2; }
.service-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.service-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(26,111,255,0.08), rgba(26,111,255,0.02));
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s ease;
  position: relative;
}
.service-icon-wrap svg {
  width: 24px;
  height: 24px;
  color: var(--brand-primary);
  transition: all 0.4s ease;
}
.service-card:hover .service-icon-wrap {
  background: linear-gradient(135deg, var(--brand-primary) 0%, #4a8eff 100%);
  transform: scale(1.08) rotate(-3deg);
  box-shadow: 0 4px 15px rgba(26,111,255,0.2);
}
.service-card:hover .service-icon-wrap svg {
  color: #fff;
  transform: scale(1.05);
}
.service-tag {
  font-size: 12px;
  font-weight: var(--fw-bold);
  color: var(--brand-primary);
  letter-spacing: 0.08em;
  padding: 6px 16px;
  border-radius: 20px;
  background: rgba(26,111,255,0.06);
  transition: all 0.3s ease;
}
.service-card:hover .service-tag {
  background: var(--brand-primary);
  color: #fff;
}
.service-title {
  font-size: clamp(22px, 1.8vw, 28px);
  font-weight: var(--fw-bold);
  color: #0a1628;
  margin: 0 0 12px;
  line-height: 1.25;
}
.service-desc {
  font-size: var(--font-size-base);
  color: var(--brand-text-secondary);
  line-height: 1.7;
  margin: 0 0 20px;
}
.service-features {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}
.service-feature {
  font-size: 13px;
  color: rgba(26,111,255,0.8);
  background: rgba(26,111,255,0.05);
  padding: 4px 12px;
  border-radius: 6px;
  font-weight: var(--fw-medium);
  transition: all 0.3s ease;
}
.service-card:hover .service-feature {
  background: rgba(26,111,255,0.1);
  transform: translateY(-1px);
}
.service-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-sm);
  font-weight: var(--fw-semibold);
  color: var(--brand-primary);
  cursor: pointer;
  transition: all 0.35s ease;
  padding: 8px 0;
  text-decoration: none;
}
.service-link svg {
  width: 16px;
  height: 16px;
  transition: transform 0.35s ease;
}
.service-card:hover .service-link { gap: 12px; }
.service-card:hover .service-link svg { transform: translateX(4px); }
.service-card-accent {
  position: absolute;
  bottom: 0;
  left: 20px;
  right: 20px;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(26,111,255,0.1), transparent);
  transition: all 0.5s ease;
  border-radius: 1px;
}
.service-card:hover .service-card-accent {
  background: linear-gradient(90deg, transparent, var(--brand-primary), transparent);
  height: 3px;
}
.service-card-shine {
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transform: skewX(-20deg);
  transition: left 0.6s ease;
  pointer-events: none;
}
.service-card:hover .service-card-shine { left: 150%; }
.services-cta {
  text-align: center;
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid rgba(26,111,255,0.06);
}
.services-cta p {
  font-size: var(--font-size-base);
  color: var(--brand-text-secondary);
  margin: 0 0 16px;
}
.services-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: linear-gradient(135deg, var(--brand-primary) 0%, #4a8eff 100%);
  color: #fff;
  border-radius: 50px;
  font-size: var(--font-size-base);
  font-weight: var(--fw-semibold);
  text-decoration: none;
  transition: all 0.35s ease;
  box-shadow: 0 4px 20px rgba(26,111,255,0.2);
}
.services-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(26,111,255,0.3);
}
.services-cta-btn svg {
  width: 18px;
  height: 18px;
  transition: transform 0.3s ease;
}
.services-cta-btn:hover svg { transform: translateX(4px); }
@media(max-width:768px) {
  .services-header { margin-bottom: 36px; }
  .services-cta { margin-top: 32px; padding-top: 28px; }
  .service-card { padding: 28px 24px; }
  .service-card-bg-number { font-size: 80px; }
}

/* ===== 服务流程 (Process) ===== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
@media(max-width:768px) {
  .process-grid { grid-template-columns: 1fr; gap: 16px; }
}
.process-card {
  background: #fff;
  border: 1px solid #eef2f6;
  border-radius: 16px;
  padding: 36px 28px 32px;
  position: relative;
  transition: all 0.3s ease;
  text-align: left;
}
.process-card:hover {
  border-color: #d0d8e8;
  box-shadow: 0 8px 30px rgba(0,20,50,0.06);
  transform: translateY(-4px);
}
@media(max-width:768px) {
  .process-card { padding: 24px 20px; }
  .process-card:hover { transform: none; }
}
.process-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.process-step {
  font-size: 13px;
  font-weight: var(--fw-bold);
  color: var(--brand-primary);
  letter-spacing: 0.08em;
  background: rgba(26,111,255,0.06);
  padding: 4px 14px;
  border-radius: 20px;
  line-height: 1.6;
}
.process-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, #1a6fff 0%, #4a8eff 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.process-icon svg {
  width: 22px;
  height: 22px;
}
.process-title {
  font-size: var(--font-size-lg);
  font-weight: var(--fw-semibold);
  color: #000;
  margin: 0 0 10px;
  line-height: var(--lh-snug);
}
.process-desc {
  font-size: var(--font-size-sm);
  color: var(--brand-text-secondary);
  line-height: var(--lh-relaxed);
  margin: 0;
}
.process-line {
  display: none;
}
@media(min-width:769px) {
  .process-card:nth-child(3n) .process-line {
    display: block;
    position: absolute;
    right: -32px;
    top: 50%;
    width: 28px;
    height: 2px;
    background: linear-gradient(90deg, var(--brand-primary), transparent);
    opacity: 0.3;
  }
  .process-card:nth-child(3n) {
    position: relative;
  }
  .process-card:nth-child(n+4) .process-line { display: none; }
}

/* ===== 客户案例 (Cases) ===== */
.cases-section {
  padding: var(--space-16) 0;
}
.cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
@media(max-width:768px) {
  .cases-grid { grid-template-columns: 1fr; gap: 16px; }
}
.case-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  min-height: 280px;
  cursor: pointer;
}
.case-card-bg {
  position: absolute;
  inset: 0;
  transition: transform 0.5s ease;
}
.case-card:hover .case-card-bg {
  transform: scale(1.08);
}
.case-card-content {
  position: relative;
  z-index: 2;
  padding: 28px 24px 24px;
  height: 100%;
  min-height: inherit;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.55) 100%);
}
.case-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.case-tag {
  font-size: 11px;
  font-weight: var(--fw-semibold);
  color: #fff;
  background: rgba(255,255,255,0.18);
  padding: 3px 12px;
  border-radius: 20px;
  letter-spacing: 0.04em;
  backdrop-filter: blur(4px);
}
.case-tag.tag-outline {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.35);
}
.case-name {
  font-size: var(--font-size-lg);
  font-weight: var(--fw-semibold);
  color: #fff;
  margin: 0 0 4px;
  line-height: var(--lh-snug);
}
.case-year {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.55);
  margin-bottom: 10px;
  display: block;
}
.case-result {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.85);
  line-height: var(--lh-relaxed);
  margin: 0;
}
.case-result strong {
  color: #fff;
  font-weight: var(--fw-semibold);
}
.case-hover-line {
  height: 3px;
  width: 0;
  background: #fff;
  border-radius: 2px;
  margin-top: 16px;
  transition: width 0.4s ease;
}
.case-card:hover .case-hover-line {
  width: 48px;
}

/* ===== CTA 板块 ===== */
.cta-section {
  position: relative;
  padding: 80px 0;
  overflow: hidden;
}
.cta-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0a1628 0%, #142850 50%, #0f1d3a 100%);
}
.cta-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: radial-gradient(circle at 30% 50%, #ffffff 1px, transparent 1px), radial-gradient(circle at 70% 50%, #ffffff 1px, transparent 1px);
  background-size: 50px 50px;
}
.cta-inner { position: relative; z-index: 2; }
.cta-header {
  text-align: center;
  margin-bottom: 48px;
}
.cta-title {
  font-size: clamp(24px, 2.8vw, 36px);
  font-weight: var(--fw-bold);
  color: #fff;
  margin: 0 0 10px;
  line-height: 1.2;
}
.cta-subtitle {
  font-size: var(--font-size-lg);
  color: rgba(255,255,255,0.65);
  margin: 0;
}
.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
@media(max-width:768px) {
  .cta-grid { grid-template-columns: 1fr; gap: 20px; }
}
.cta-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  padding: 36px 32px;
  backdrop-filter: blur(8px);
}
.cta-card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--fw-semibold);
  color: #fff;
  margin: 0 0 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  gap: 10px;
}
.cta-card-title::before {
  content: '';
  width: 4px;
  height: 20px;
  background: var(--brand-primary-light, #5b8dff);
  border-radius: 2px;
  flex-shrink: 0;
}
.cta-contact-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media(max-width:480px) {
  .cta-contact-list { grid-template-columns: 1fr; }
}
.cta-contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  background: rgba(255,255,255,0.04);
  border-radius: 12px;
  transition: background 0.25s ease;
}
.cta-contact-item:hover {
  background: rgba(255,255,255,0.08);
}
.cta-contact-item svg {
  width: 20px;
  height: 20px;
  color: var(--brand-primary-light, #5b8dff);
  flex-shrink: 0;
}
.cta-contact-item div {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}
.cta-label {
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.04em;
  text-align: left;
}
.cta-contact-item strong {
  font-size: var(--font-size-sm);
  font-weight: var(--fw-medium);
  color: rgba(255,255,255,0.88);
  word-break: break-all;
  line-height: 1.3;
  text-align: left;
}

/* 询盘表单 */
.inquiry-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.inquiry-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 14px;
}
.inquiry-form-row .inquiry-field-wrapper {
  margin-bottom: 0;
  width: 100%;
}
.inquiry-form-row .inquiry-input {
  width: 100%;
}
@media(max-width:480px) {
  .inquiry-form-row { grid-template-columns: 1fr; }
}
.inquiry-input {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  color: #fff;
  font-size: var(--font-size-sm);
  outline: none;
  transition: all 0.25s ease;
  box-sizing: border-box;
}
.inquiry-input::placeholder { color: rgba(255,255,255,0.35); }
.inquiry-input:focus {
  border-color: var(--brand-primary-light, #5b8dff);
  background: rgba(255,255,255,0.12);
}
.inquiry-input option {
  color: #000;
  background: #fff;
}
select.inquiry-input {
  width: 100%;
  appearance: auto;
  -webkit-appearance: auto;
}
.inquiry-textarea { resize: vertical; min-height: 90px; }
.inquiry-submit {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-primary-light, #5b8dff) 100%);
  color: #fff;
  font-size: var(--font-size-base);
  font-weight: var(--fw-semibold);
  cursor: pointer;
  transition: all 0.25s ease;
}
.inquiry-submit:hover { opacity: 0.9; transform: translateY(-1px); }
.inquiry-submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.inquiry-tip {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.35);
  text-align: center;
  margin: 0;
}
.inquiry-loading {
  text-align: center;
  color: rgba(255,255,255,0.45);
  font-size: var(--font-size-sm);
  padding: 40px 0;
}
.inquiry-field-wrapper {
  margin-bottom: 14px;
}
.inquiry-field-label {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.6);
  margin-bottom: 6px;
}
.inquiry-radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-bottom: 14px;
}
.inquiry-radio-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.75);
  cursor: pointer;
}
.inquiry-radio-label input[type="radio"],
.inquiry-radio-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--brand-primary-light, #5b8dff);
}

/* 验证码弹窗 */
.captcha-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,0.55);
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(2px);
}
.captcha-modal {
  background: #fff;
  border-radius: 16px;
  width: 340px;
  max-width: 90vw;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
  overflow: hidden;
}
.captcha-title {
  padding: 20px 24px 0;
  font-size: 18px;
  font-weight: var(--fw-semibold);
  color: #1a1a2e;
}
.captcha-body {
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
}
.captcha-img {
  width: 160px;
  height: 52px;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid #e2e8f0;
}
.captcha-input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #d0d5dd;
  border-radius: 10px;
  font-size: 15px;
  color: #1a1a2e;
  outline: none;
  text-align: center;
  letter-spacing: 4px;
  box-sizing: border-box;
}
.captcha-input:focus { border-color: var(--brand-primary); }
.captcha-input::placeholder { color: #a0aec0; letter-spacing: normal; }
.captcha-actions {
  display: flex;
  border-top: 1px solid #eef2f6;
}
.captcha-btn {
  flex: 1;
  padding: 14px;
  border: none;
  font-size: 15px;
  font-weight: var(--fw-medium);
  cursor: pointer;
  transition: background 0.2s;
}
.captcha-btn-cancel {
  background: #f8fafc;
  color: #64748b;
}
.captcha-btn-cancel:hover { background: #f1f5f9; }
.captcha-btn-confirm {
  background: var(--brand-primary);
  color: #fff;
}
.captcha-btn-confirm:hover { opacity: 0.92; }
.inquiry-success {
  text-align: center;
  padding: 24px 0;
}
.inquiry-success svg {
  width: 48px;
  height: 48px;
  color: var(--baichong-state-success, #22c55e);
  margin-bottom: 12px;
}
.inquiry-success h4 {
  font-size: var(--font-size-xl);
  font-weight: var(--fw-semibold);
  color: #fff;
  margin: 0 0 8px;
}
.inquiry-success p {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.55);
  line-height: var(--lh-relaxed);
  margin: 0;
}

/* ===== 导航栏 ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  height: var(--nav-height);
  background: var(--brand-white);
  border-bottom: 1px solid var(--brand-border-light);
  display: flex; align-items: center;
  transition: all var(--transition-base);
}
.site-header.scrolled {
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(255,255,255,0.95);
}

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-8);
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; height: 100%;
}

.logo { flex-shrink: 0; }
.logo a {
  display: flex; align-items: center;
  gap: 12px; text-decoration: none;
}
.logo-img {
  height: 40px;
  width: auto;
  display: block;
}
.logo-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: var(--brand-primary);
  color: var(--brand-white);
  border-radius: var(--radius-md);
  font-size: 1.1rem; font-weight: var(--fw-extrabold);
}
.logo-text {
  font-size: 1.25rem; font-weight: var(--fw-bold);
  color: var(--brand-primary);
}
.logo-text small {
  font-weight: var(--fw-normal);
  font-size: 0.8rem;
  color: var(--brand-text-secondary);
}

.main-nav { display: flex; align-items: center; margin-left: auto; }
.main-nav ul {
  display: flex; list-style: none; gap: var(--space-1);
}
.main-nav a {
  display: block; padding: 8px 16px;
  color: #000;
  font-size: 16px;
  font-weight: var(--fw-medium);
  border-radius: var(--radius-md);
  white-space: nowrap;
  transition: all var(--transition-base);
}
.main-nav a:hover,
.main-nav a.active { color: var(--brand-primary); background: rgba(26,111,255,0.06); }

.main-nav .has-submenu { position: relative; }
.main-nav .submenu {
  display: none; position: absolute; top: 100%; left: 0;
  background: var(--brand-white);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2) 0;
  min-width: 180px;
  box-shadow: var(--shadow-lg);
  z-index: 100;
}
.main-nav .has-submenu:hover .submenu { display: block; animation: fadeInUp 0.25s ease forwards; }
.main-nav .submenu li { display: block; }
.main-nav .submenu a {
  padding: var(--space-2) var(--space-4);
  border-radius: 0; width: 100%;
  font-size: var(--font-size-sm);
}
.main-nav .submenu a:hover { background: var(--brand-light-bg); }

.header-consult-btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: 10px 24px; margin-left: var(--space-4);
  font-size: var(--font-size-sm); font-weight: var(--fw-semibold);
  color: var(--brand-white);
  background: var(--brand-primary);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-base);
  flex-shrink: 0;
}
.header-consult-btn:hover {
  color: var(--brand-white);
  background: var(--brand-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26,111,255,0.3);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column; justify-content: center; align-items: center;
  width: 40px; height: 40px; cursor: pointer;
  background: none; border: none; position: relative;
}
.mobile-menu-toggle svg {
  width: 22px; height: 22px;
  color: var(--brand-text);
  position: absolute;
  transition: all 0.3s ease;
}
.mobile-menu-toggle svg:first-child { opacity: 1; transform: rotate(0); }
.mobile-menu-toggle svg:last-child { opacity: 0; transform: rotate(90deg); }
.mobile-menu-toggle.active svg:first-child { opacity: 0; transform: rotate(-90deg); }
.mobile-menu-toggle.active svg:last-child { opacity: 1; transform: rotate(0); }

.mobile-menu-panel {
  display: none;
  position: fixed; top: var(--nav-height); left: 0; right: 0;
  background: rgba(255,255,255,0.98);
  box-shadow: 0 8px 30px rgba(0,0,0,0.08);
  z-index: 49;
  max-height: calc(100vh - var(--nav-height));
  overflow-y: auto;
}
.mobile-menu-panel.active { display: block; }
.mobile-menu-panel-inner { padding: 8px 0; }
.mobile-menu-panel ul { list-style: none; margin: 0; padding: 0; }
.mobile-menu-panel li { margin: 0; }
.mobile-menu-panel a {
  display: block; padding: 13px 20px;
  color: #000; font-size: 15px; font-weight: var(--fw-medium);
  text-decoration: none;
  transition: all 0.2s ease;
}
.mobile-menu-panel a:hover { color: var(--brand-primary); background: rgba(26,111,255,0.04); }
.mobile-menu-panel .submenu {
  display: none;
  background: rgba(0,0,0,0.015);
}
.mobile-menu-panel .has-submenu > a::after {
  content: '';
  float: right;
  margin-top: 3px;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--brand-text-light);
  border-bottom: 2px solid var(--brand-text-light);
  transform: rotate(45deg);
  transition: all 0.3s ease;
}
.mobile-menu-panel .has-submenu.open > a { color: var(--brand-primary); }
.mobile-menu-panel .has-submenu.open > a::after {
  transform: rotate(-135deg);
  margin-top: 7px;
  border-color: var(--brand-primary);
}
.mobile-menu-panel .has-submenu.open > .submenu { display: block; }
.mobile-menu-panel .submenu a {
  font-size: 14px; padding: 11px 20px 11px 36px;
  color: var(--brand-text-secondary);
}
.mobile-menu-panel .submenu a:hover { color: var(--brand-primary); }
body.mobile-nav-open { overflow: hidden; }
@media(max-width:768px) { body { padding-bottom: 48px; } }

@media(max-width:1024px) {
  .main-nav { display: none; }
  .header-consult-btn { display: none; }
  .mobile-menu-toggle { display: flex; }
}

@media(max-width:640px) {
  .mobile-menu-panel a { font-size: 14px; padding: 12px 16px; }
  .mobile-menu-panel .submenu a { font-size: 13px; padding: 10px 16px 10px 28px; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ===== Hero Section ===== */
.hero-section {
  position: relative;
  padding: calc(var(--nav-height) + 80px) 0 80px;
  background-color: var(--brand-dark-bg);
  overflow: hidden;
  min-height: 85vh;
  display: flex; align-items: center;
}
.hero-section::before {
  content: '';
  position: absolute; inset: 0;
  opacity: 0.03;
  background-image:
    radial-gradient(circle at 25% 50%, #ffffff 1px, transparent 1px),
    radial-gradient(circle at 75% 50%, #ffffff 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-overlay { display: none; }

.hero-bg-image {
  position: absolute; inset: 0; z-index: 0;
  background-size: cover; background-position: center;
  opacity: 0.08;
}

.hero-container {
  position: relative; z-index: 10;
  max-width: var(--container-max);
  margin: 0 auto; padding: 0 var(--space-8);
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 6px 18px; margin-bottom: 24px;
  font-size: var(--font-size-xs); font-weight: var(--fw-semibold);
  color: var(--brand-text-dark-bg);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
}

.hero-title {
  font-size: clamp(28px, 3.5vw, 48px);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  color: var(--brand-white);
  margin-bottom: var(--space-6);
  text-wrap: balance;
  word-break: keep-all;
  max-width: 900px; margin-left: auto; margin-right: auto;
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  line-height: var(--lh-relaxed);
  color: var(--brand-text-dark-bg);
  max-width: 640px; margin: 0 auto var(--space-10);
}

.hero-actions {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: var(--space-4);
}
@media (min-width: 640px) {
  .hero-actions { flex-direction: row; }
}

.hero-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4) var(--space-6);
  max-width: 800px;
  margin: var(--space-16) auto 0;
}
@media (min-width: 768px) {
  .hero-features { grid-template-columns: repeat(5, 1fr); }
}
.hero-feature {
  display: flex; align-items: center; gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--brand-text-dark-bg);
}
.hero-feature:nth-child(4),
.hero-feature:nth-child(5) {
  grid-column: span 2;
}
@media (min-width: 768px) {
  .hero-feature:nth-child(4),
  .hero-feature:nth-child(5) {
    grid-column: auto;
  }
}
.hero-feature-icon {
  width: 16px; height: 16px; flex-shrink: 0;
  color: var(--brand-success);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: 12px 28px;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--fw-semibold);
  border: none; border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-base);
}
.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--brand-primary);
  color: var(--brand-white);
}
.btn-primary:hover {
  background: var(--brand-primary-dark);
  color: var(--brand-white);
  box-shadow: 0 4px 12px rgba(26,111,255,0.3);
}

.btn-accent {
  background: var(--brand-accent);
  color: var(--brand-white);
}
.btn-accent:hover {
  background: var(--brand-accent-dark);
  color: var(--brand-white);
  box-shadow: 0 4px 12px rgba(255,107,53,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--brand-primary);
  border: 2px solid var(--brand-primary);
}
.btn-outline:hover {
  background: var(--brand-primary);
  color: var(--brand-white);
}

.btn-outline-light {
  background: transparent;
  color: var(--brand-white);
  border: 2px solid rgba(255,255,255,0.5);
}
.btn-outline-light:hover {
  border-color: var(--brand-white);
  background: rgba(255,255,255,0.1);
}

/* ===== Section通用 ===== */
.section {
  padding: var(--space-20) 0;
}
.section-alt {
  padding: var(--space-20) 0;
  background-color: var(--brand-light-bg);
}
.section-dark {
  padding: var(--space-20) 0;
  background-color: var(--brand-dark-bg);
  color: var(--brand-white);
}

.section-header, .baichong-section-title {
  text-align: center;
  margin-bottom: var(--space-16);
}
.section-tag {
  display: inline-flex; align-items: center;
  padding: 4px 12px;
  background: rgba(26,111,255,0.08);
  color: var(--brand-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--fw-medium);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}
.section-dark .section-tag {
  background: rgba(255,255,255,0.1);
  color: var(--brand-text-dark-bg);
}
.section-title, .baichong-section-title h2 {
  font-size: var(--font-size-4xl);
  font-weight: var(--fw-bold);
  color: var(--brand-text);
  margin-bottom: var(--space-4);
  line-height: var(--lh-snug);
}
.section-dark .section-title { color: var(--brand-white); }
.section-desc, .baichong-section-title p {
  font-size: var(--font-size-lg);
  color: var(--brand-text-secondary);
  max-width: 800px;
  margin: 0 auto;
  line-height: var(--lh-relaxed);
}
.section-dark .section-desc { color: var(--brand-text-dark-bg); }

/* ===== 行业卡片 (Industry) ===== */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media(max-width:768px) {
  .industry-grid { grid-template-columns: 1fr; gap: 14px; }
}
@media(min-width:769px) and (max-width:1023px) {
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
}
.industry-card {
  position: relative;
  background: #fff;
  border: 1px solid #eef2f6;
  border-radius: 14px;
  padding: 30px 24px 28px;
  cursor: pointer;
  overflow: hidden;
  transition: all 0.35s ease;
}
.industry-card:hover {
  border-color: #d0d8e8;
  box-shadow: 0 8px 30px rgba(0,20,50,0.06);
  transform: translateY(-4px);
}
.industry-card-front {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.industry-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(26,111,255,0.08) 0%, rgba(26,111,255,0.03) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  transition: all 0.35s ease;
}
.industry-icon svg {
  width: 26px;
  height: 26px;
  color: var(--brand-primary);
  transition: all 0.35s ease;
}
.industry-card:hover .industry-icon {
  background: var(--brand-primary);
  transform: scale(1.05);
}
.industry-card:hover .industry-icon svg {
  color: #fff;
}
.industry-title {
  font-size: var(--font-size-xl);
  font-weight: var(--fw-semibold);
  color: #000;
  margin: 0 0 6px;
  line-height: 1.2;
}
.industry-tag {
  font-size: var(--font-size-sm);
  color: var(--brand-text-secondary);
  margin: 0;
  line-height: 1.4;
}
.industry-card-hover {
  position: absolute;
  z-index: 3;
  top: 16px;
  right: 16px;
  opacity: 0;
  transform: translateX(-8px);
  transition: all 0.35s ease;
}
.industry-card:hover .industry-card-hover {
  opacity: 1;
  transform: translateX(0);
}
.industry-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--brand-primary);
  color: #fff;
}
.industry-arrow svg {
  width: 16px;
  height: 16px;
}
.industry-bar {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-primary), #7cafff);
  border-radius: 2px 2px 0 0;
  transition: width 0.4s ease;
}
.industry-card:hover .industry-bar {
  width: 60%;
}

/* ===== Baichong Cards ===== */
.baichong-card {
  background: var(--brand-white);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: all var(--transition-base);
}
.baichong-card:hover {
  box-shadow: 0 4px 20px rgba(13,27,62,0.06);
  border-color: var(--brand-border-dark);
  transform: translateY(-2px);
}

/* ===== 核心优势 ===== */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media(max-width:768px) {
  .advantages-grid { grid-template-columns: 1fr; gap: 16px; }
}
@media(min-width:769px) and (max-width:1023px) {
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
}
.advantage-card {
  position: relative;
  background: var(--brand-white);
  border: 1px solid var(--brand-border);
  border-radius: 16px;
  padding: 32px 28px;
  transition: all 0.35s ease;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.advantage-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0,20,50,0.06);
  border-color: #d0d8e8;
}
.advantage-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(26,111,255,0.08) 0%, rgba(26,111,255,0.03) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.35s ease;
}
.advantage-card-icon svg {
  width: 22px;
  height: 22px;
  color: var(--brand-primary);
  transition: all 0.35s ease;
}
.advantage-card:hover .advantage-card-icon {
  background: var(--brand-primary);
  transform: scale(1.05);
}
.advantage-card:hover .advantage-card-icon svg {
  color: #fff;
}
.advantage-text h3 {
  font-size: clamp(17px, 1.4vw, 20px);
  font-weight: var(--fw-semibold);
  color: #000;
  margin: 0 0 8px;
  line-height: 1.3;
}
.advantage-text p {
  font-size: var(--font-size-sm);
  color: var(--brand-text-secondary);
  line-height: var(--lh-relaxed);
  margin: 0;
}
.advantage-hover-bar {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-primary), #7cafff);
  border-radius: 2px 2px 0 0;
  transition: width 0.4s ease;
}
.advantage-card:hover .advantage-hover-bar {
  width: 40%;
}

/* ===== 核心产品交互展示 ===== */
.wom-feature-section {
  --wom-primary: var(--brand-primary);
  position: relative;
  width: 100%;
  min-height: 100vh;
  padding: 60px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: var(--brand-dark-bg);
  line-height: 1.5;
}
.wom-feature-bg {
  position: absolute; top: 0; left: 0; right: 0; z-index: 0;
  width: 100%; height: 100%;
  background-size: cover; background-position: center;
  pointer-events: none;
  transition: background-image 0.8s ease-in-out;
}
.wom-feature-container {
  position: relative; z-index: 10;
  width: 100%; max-width: 1400px;
  display: grid; gap: 40px;
}
@media (min-width: 1024px) {
  .wom-feature-container { grid-template-columns: 5fr 7fr; gap: 80px; }
}
.wom-feature-left {
  min-height: 400px; padding: 32px;
  background: rgba(255,255,255,0.78);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.4);
  border-left: 4px solid var(--brand-primary);
  border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
  box-shadow: 0 30px 60px rgba(0,0,0,0.15);
  display: flex; flex-direction: column; justify-content: space-between;
}
@media (min-width: 768px) {
  .wom-feature-left { min-height: 500px; padding: 48px; }
}
.wom-feature-meta {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px;
}
.wom-feature-meta-text {
  font-family: var(--font-mono);
  font-size: 12px; font-weight: var(--fw-bold);
  color: rgba(0,0,0,0.5); letter-spacing: 0.05em;
}
.wom-feature-status-dot {
  width: 8px; height: 8px; background: var(--brand-primary);
  border-radius: 50%; opacity: 0.2;
}
.wom-feature-status-dot.active { opacity: 1; animation: womPulse 2s infinite; }
.wom-feature-title {
  margin: 0 0 32px; font-size: 28px; font-weight: var(--fw-extrabold); letter-spacing: -0.02em;
}
@media (min-width: 768px) { .wom-feature-title { font-size: 40px; } }
.wom-feature-nav-list { display: flex; flex-direction: column; gap: 8px; }
.wom-feature-nav-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px; margin-left: -16px; border-radius: var(--radius-md);
  cursor: pointer; opacity: 0.5; transition: all 0.3s ease;
}
.wom-feature-nav-item:hover { background: rgba(255,255,255,0.4); opacity: 0.8; }
.wom-feature-nav-item.active { opacity: 1; background: var(--brand-white); box-shadow: 0 4px 12px rgba(0,0,0,0.05); }
.wom-feature-nav-text { font-size: 16px; font-weight: var(--fw-bold); }
@media (min-width: 768px) { .wom-feature-nav-text { font-size: 18px; } }
.wom-feature-nav-item.active .wom-feature-nav-text { color: var(--brand-primary); }
.wom-feature-nav-arrow {
  width: 18px; height: 18px; stroke: var(--brand-primary);
  opacity: 0; transform: translateX(-10px); transition: all 0.3s ease;
}
.wom-feature-nav-item.active .wom-feature-nav-arrow { opacity: 1; transform: translateX(0); }
.wom-feature-desc-area {
  margin-top: 16px; padding: 16px 20px;
  background: rgba(255,255,255,0.08); border-radius: var(--radius-lg);
}
.wom-feature-desc-text {
  margin: 0; font-size: 14px; color: rgba(255,255,255,0.85); line-height: 1.7;
}
.wom-feature-right { position: relative; display: flex; flex-direction: column; justify-content: center; }
@media (min-width: 1024px) { .wom-feature-right { align-items: flex-end; } }
.wom-feature-visual-header { display: flex; flex-direction: column-reverse; margin-bottom: 16px; }
@media (min-width: 1024px) {
  .wom-feature-visual-header { flex-direction: row; align-items: baseline; justify-content: flex-end; gap: 24px; }
}
.wom-feature-visual-title {
  font-size: 24px; font-weight: var(--fw-extrabold); color: var(--brand-white);
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}
@media (min-width: 768px) { .wom-feature-visual-title { font-size: 30px; } }
.wom-feature-big-number {
  font-size: 4rem; font-weight: var(--fw-extrabold); color: rgba(255,255,255,0.5);
  line-height: 1;
}
@media (min-width: 768px) { .wom-feature-big-number { font-size: 6rem; } }
@media (min-width: 1024px) { .wom-feature-big-number { font-size: 8rem; } }
.wom-feature-spec-card {
  position: relative; width: 100%; padding: 24px; overflow: hidden;
  border-radius: var(--radius-xl);
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.4);
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}
@media (min-width: 768px) {
  .wom-feature-spec-card { max-width: 500px; padding: 32px; gap: 32px; }
}
.wom-feature-bg-icon {
  position: absolute; right: -30px; bottom: -30px;
  width: 180px; height: 180px;
  color: var(--brand-primary); opacity: 0.05;
  transform: rotate(12deg); pointer-events: none;
}
.wom-feature-spec-item { position: relative; z-index: 2; display: flex; gap: 12px; }
.wom-feature-icon-box {
  display: none; height: fit-content; padding: 10px;
  color: var(--brand-white); background: var(--brand-primary);
  border-radius: 10px;
}
@media (min-width: 640px) { .wom-feature-icon-box { display: flex; } }
.wom-feature-spec-label {
  margin-bottom: 4px; font-size: 10px; font-weight: var(--fw-bold);
  text-transform: uppercase; color: rgba(0,0,0,0.4);
}
@media (min-width: 768px) { .wom-feature-spec-label { font-size: 12px; } }
.wom-feature-spec-main {
  margin-bottom: 2px; font-size: 14px; font-weight: var(--fw-extrabold); text-transform: uppercase;
}
@media (min-width: 768px) { .wom-feature-spec-main { font-size: 16px; } }
.wom-feature-spec-sub {
  font-family: var(--font-mono);
  font-size: 12px; color: rgba(0,0,0,0.6);
}
.wom-feature-svg-icon { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.wom-feature-visual-title.wom-hidden,
.wom-feature-spec-card.wom-hidden,
.wom-feature-desc-area.wom-hidden {
  opacity: 0; transform: scale(0.97);
}
@keyframes womPulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.2; } }

/* ===== 产品系列网格 ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
@media(max-width:900px) { .products-grid { grid-template-columns: repeat(2, 1fr); } }
@media(max-width:480px) { .products-grid { grid-template-columns: 1fr; } }

.product-card {
  display: block; color: inherit; text-decoration: none;
  background: var(--brand-white);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}
.product-card:hover {
  box-shadow: 0 4px 20px rgba(13,27,62,0.06);
  border-color: var(--brand-border-dark);
  transform: translateY(-3px);
}
.product-card-img {
  width: 100%; aspect-ratio: 1/1; overflow: hidden;
  background: var(--brand-light-bg);
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.product-card-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s ease;
}
.product-card:hover .product-card-img img { transform: scale(1.08); }
.product-card-img-placeholder {
  font-size: var(--font-size-base); font-weight: var(--fw-bold);
  color: var(--brand-text-light); text-align: center; padding: 20px;
}
.product-card-body { padding: 20px; }
.product-card-body h3 {
  font-size: var(--font-size-base);
  font-weight: var(--fw-semibold);
  color: var(--brand-text);
  margin: 0 0 var(--space-2);
}
.product-card-body p {
  font-size: var(--font-size-sm);
  color: var(--brand-text-secondary);
  line-height: var(--lh-relaxed);
  margin: 0 0 var(--space-4);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.product-card-body .btn-sm {
  display: inline-block; font-size: var(--font-size-sm); font-weight: var(--fw-semibold);
  color: var(--brand-primary); transition: all var(--transition-base);
}
.product-card-body .btn-sm:hover { color: var(--brand-primary-dark); }
.product-footnote {
  grid-column: 1 / -1; text-align: center;
  color: var(--brand-text-light); font-size: var(--font-size-sm); margin: 0; padding: 12px 0 0;
}

/* ===== Region / 地域服务 ===== */
.regions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media(max-width:768px) { .regions-grid { grid-template-columns: 1fr; } }

.region-card {
  background: var(--brand-white);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  transition: all var(--transition-base);
}
.region-card:hover {
  box-shadow: 0 4px 20px rgba(13,27,62,0.06);
  border-color: var(--brand-border-dark);
  transform: translateY(-2px);
}
.region-icon {
  width: 56px; height: 56px; margin: 0 auto 16px;
  background: rgba(26,111,255,0.08);
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
}
.region-card h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-3);
}
.region-card p {
  font-size: var(--font-size-sm);
  color: var(--brand-text-secondary);
  line-height: var(--lh-relaxed);
}

/* ===== 场景 ===== */
.scenes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media(max-width:768px) { .scenes-grid { grid-template-columns: 1fr; } }

.scene-item {
  display: flex; align-items: center; gap: 14px;
  padding: 18px 20px;
  background: var(--brand-white);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: default;
}
.scene-item:hover { border-color: var(--brand-primary-light); box-shadow: var(--shadow-md); }
.scene-dot {
  width: 8px; height: 8px; flex-shrink: 0;
  background: var(--brand-primary); border-radius: 50%;
}
.scene-item span {
  font-size: var(--font-size-sm);
  color: var(--brand-text);
  font-weight: var(--fw-medium);
}

/* ===== 案例 ===== */
.case-grid { display: flex; flex-direction: column; gap: 36px; }
.case-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
}
.case-row.reverse .case-img { order: 2; }
.case-row.reverse .case-text { order: 1; }
@media(max-width:768px) {
  .case-row { grid-template-columns: 1fr; }
  .case-row.reverse .case-img { order: 1; }
  .case-row.reverse .case-text { order: 2; }
}
.case-img {
  border-radius: var(--radius-xl); overflow: hidden;
  background: var(--brand-light-bg-alt);
}
.case-img img { width: 100%; height: 300px; object-fit: cover; }
@media(max-width:768px) { .case-img img { height: 220px; } }
.case-text h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--fw-semibold);
  color: var(--brand-text);
  margin-bottom: var(--space-3);
}
.case-text p {
  font-size: var(--font-size-sm);
  color: var(--brand-text-secondary);
  line-height: var(--lh-relaxed);
}
.cases-more { text-align: center; margin-top: var(--space-10); }

/* ===== 技术文章 ===== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media(max-width:1024px) { .articles-grid { grid-template-columns: repeat(2, 1fr); } }
@media(max-width:768px) { .articles-grid { grid-template-columns: 1fr; } }

.article-card {
  background: var(--brand-white);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}
.article-card:hover {
  box-shadow: 0 4px 20px rgba(13,27,62,0.06);
  border-color: var(--brand-border-dark);
  transform: translateY(-2px);
}
.article-card-body { padding: 24px; }
.article-card-body .article-date {
  font-size: var(--font-size-xs);
  color: var(--brand-text-light);
  margin-bottom: var(--space-2);
}
.article-card-body h3 {
  font-size: var(--font-size-base);
  font-weight: var(--fw-semibold);
  color: var(--brand-text);
  margin-bottom: var(--space-2);
  line-height: var(--lh-snug);
}
.article-card-body h3 a { color: var(--brand-text); }
.article-card-body h3 a:hover { color: var(--brand-primary); }
.article-card-body p {
  font-size: var(--font-size-sm);
  color: var(--brand-text-secondary);
  line-height: var(--lh-relaxed);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}

/* ===== Stats ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
@media(max-width:768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
.stat-item {
  text-align: center;
  padding: var(--space-6);
  background: var(--brand-light-bg);
  border-radius: var(--radius-lg);
}
.stat-number {
  font-size: clamp(28px, 3vw, 40px);
  font-weight: var(--fw-bold);
  color: var(--brand-primary);
  font-variant-numeric: tabular-nums;
}
.stat-number.green { color: var(--brand-success); }
.stat-label {
  font-size: var(--font-size-sm);
  color: var(--brand-text-secondary);
  margin-top: var(--space-1);
}

/* ===== Service Process ===== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 24px;
}
@media(max-width:1024px) { .process-grid { grid-template-columns: repeat(3, 1fr); } }
@media(max-width:640px) { .process-grid { grid-template-columns: repeat(2, 1fr); } }

.process-step { text-align: center; }
.process-num {
  width: 56px; height: 56px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto var(--space-4);
  font-size: var(--font-size-lg);
  font-weight: var(--fw-bold);
  background: rgba(26,111,255,0.08);
  color: var(--brand-primary);
}
.process-step h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--fw-semibold);
  color: var(--brand-text);
  margin-bottom: var(--space-2);
}
.process-step p {
  font-size: var(--font-size-xs);
  line-height: var(--lh-relaxed);
  color: var(--brand-text-secondary);
}

/* ===== 行业方案 ===== */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media(max-width:768px) { .industry-grid { grid-template-columns: repeat(2, 1fr); } }
@media(max-width:480px) { .industry-grid { grid-template-columns: 1fr; } }

.industry-card {
  cursor: pointer;
}

/* ===== FAQ ===== */
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-lg);
  background: var(--brand-white);
  margin-bottom: var(--space-3);
  overflow: hidden;
}
.faq-toggle {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px;
  text-align: left;
  font-size: var(--font-size-sm);
  font-weight: var(--fw-semibold);
  color: var(--brand-text);
  background: none;
  border: none;
  cursor: pointer;
  transition: background var(--transition-base);
}
.faq-toggle:hover { background: var(--brand-light-bg); }
.faq-toggle-icon {
  width: 16px; height: 16px;
  color: var(--brand-text-secondary);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}
.faq-item.active .faq-toggle-icon { transform: rotate(180deg); }
.faq-answer {
  padding: 0 24px 16px;
  font-size: var(--font-size-sm);
  line-height: var(--lh-relaxed);
  color: var(--brand-text-secondary);
  display: none;
}
.faq-item.active .faq-answer { display: block; }

/* ===== CTA ===== */
.cta-section {
  padding: var(--space-20) 0;
  background-color: var(--brand-dark-bg);
  text-align: center;
}
.cta-section h2 {
  font-size: clamp(22px, 2.4vw, 32px);
  font-weight: var(--fw-bold);
  color: var(--brand-white);
  margin-bottom: var(--space-4);
  text-wrap: balance;
}
.cta-section p {
  font-size: var(--font-size-base);
  line-height: var(--lh-relaxed);
  color: var(--brand-text-dark-bg);
  max-width: 800px;
  margin: 0 auto var(--space-10);
}
.cta-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Conversion Form ===== */
.conversion-form {
  max-width: 560px;
  margin: 0 auto;
}
.form-input {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.08);
  color: var(--brand-white);
  font-size: var(--font-size-sm);
  font-family: var(--font-family);
  outline: none;
  transition: border-color var(--transition-base);
}
.form-input:focus { border-color: rgba(255,255,255,0.3); }
.form-input::placeholder { color: rgba(255,255,255,0.4); }
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
@media(max-width:480px) { .form-grid { grid-template-columns: 1fr; } }

/* ===== 页脚 ===== */
.site-footer {
  background-color: var(--brand-dark-bg);
  border-top: 1px solid rgba(255,255,255,0.08);
  color: var(--brand-white);
}

.footer-main { padding: 60px 0 40px; }
.footer-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-8);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}
@media(max-width:768px) { .footer-container { grid-template-columns: repeat(2, 1fr); } }
@media(max-width:480px) { .footer-container { grid-template-columns: 1fr; } }

.footer-col h3 {
  font-size: var(--font-size-base);
  font-weight: var(--fw-semibold);
  color: var(--brand-white);
  margin-bottom: var(--space-4);
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: var(--space-2); }
.footer-col ul a {
  color: var(--brand-text-dark-bg);
  font-size: var(--font-size-sm);
  transition: color var(--transition-base);
}
.footer-col ul a:hover { color: var(--brand-white); }

.footer-col .contact-item {
  display: flex; align-items: center; gap: var(--space-2);
  color: var(--brand-text-dark-bg);
  font-size: var(--font-size-sm);
}
.footer-col .contact-item .icon {
  width: 16px; height: 16px; flex-shrink: 0;
  color: var(--brand-primary-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  text-align: center;
}
.footer-bottom .footer-container {
  display: flex; flex-direction: column; align-items: center; gap: var(--space-3);
}
.footer-copyright {
  color: rgba(255,255,255,0.5);
  font-size: var(--font-size-xs);
  line-height: var(--lh-relaxed);
}
.footer-keywords { text-align: center; }
.footer-keywords a {
  color: rgba(255,255,255,0.35);
  font-size: var(--font-size-xs);
  transition: color var(--transition-base);
}
.footer-keywords a:hover { color: rgba(255,255,255,0.6); }
.footer-keywords .sep { color: rgba(255,255,255,0.15); margin: 0 4px; }

/* ===== Loading ===== */
.loading { display: flex; align-items: center; justify-content: center; padding: 40px; }
.loading::after {
  content: '';
  width: 32px; height: 32px;
  border: 3px solid var(--brand-border);
  border-top-color: var(--brand-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== 动画 ===== */
.fade-in { opacity: 0; transform: translateY(20px); transition: all 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ============================================
   List Grid / 列表页
   ============================================ */

.list-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-8);
}
.list-grid .grid-card {
  background: var(--brand-white);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}
.list-grid .grid-card:hover {
  box-shadow: 0 4px 20px rgba(13,27,62,0.06);
  border-color: var(--brand-border-dark);
  transform: translateY(-2px);
}
.list-grid .card-img {
  width: 100%; height: 200px; overflow: hidden;
  background: var(--brand-light-bg-alt);
  position: relative;
}
.list-grid .card-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.5s ease;
}
.list-grid .grid-card:hover .card-img img { transform: scale(1.06); }
.list-grid .card-img .card-badge {
  position: absolute; top: 12px; left: 12px;
  padding: 4px 12px;
  font-size: var(--font-size-xs);
  font-weight: var(--fw-semibold);
  color: var(--brand-white);
  background: rgba(26,111,255,0.85);
  border-radius: var(--radius-full);
  backdrop-filter: blur(4px);
}
.list-grid .card-body { padding: 20px; }
.list-grid .card-body h3 {
  font-size: var(--font-size-base);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-2);
  line-height: var(--lh-snug);
}
.list-grid .card-body .card-summary {
  font-size: var(--font-size-sm);
  color: var(--brand-text-secondary);
  line-height: var(--lh-relaxed);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  margin-bottom: var(--space-3);
}
.list-grid .card-body .card-meta {
  font-size: var(--font-size-xs);
  color: var(--brand-text-light);
  display: flex; gap: 14px;
}
.list-empty {
  text-align: center;
  padding: 80px 20px;
  color: var(--brand-text-light);
}

/* ===== 分页 ===== */
.pagination-bar {
  display: flex;
  justify-content: center;
  gap: var(--space-1);
  margin: 48px 0 20px;
  padding: 0 var(--space-8);
}
.pagination-bar a, .pagination-bar span {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 40px; height: 40px;
  padding: 0 12px;
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--brand-text-secondary);
  text-decoration: none;
  transition: all var(--transition-base);
}
.pagination-bar a:hover { border-color: var(--brand-primary); color: var(--brand-primary); }
.pagination-bar a.active {
  background: var(--brand-primary);
  color: var(--brand-white);
  border-color: var(--brand-primary);
}
.pagination-bar a.disabled { opacity: 0.4; pointer-events: none; }
.pagination-bar .page-dots { border: none; color: var(--brand-text-light); }

/* ===== 详情页通用 ===== */
.detail-hero {
  position: relative;
  padding: calc(var(--nav-height) + 60px) 0 60px;
  background-color: var(--brand-dark-bg);
  color: var(--brand-white);
  text-align: center;
  overflow: hidden;
}
.detail-hero::before {
  content: '';
  position: absolute; inset: 0;
  opacity: 0.03;
  background-image:
    radial-gradient(circle at 25% 50%, #ffffff 1px, transparent 1px),
    radial-gradient(circle at 75% 50%, #ffffff 1px, transparent 1px);
  background-size: 60px 60px;
}
.detail-hero .hero-inner { position: relative; z-index: 2; }
.detail-hero .hero-breadcrumb {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--space-3);
}
.detail-hero .hero-breadcrumb a { color: rgba(255,255,255,0.65); }
.detail-hero .hero-breadcrumb a:hover { color: var(--brand-white); }
.detail-hero h1 {
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  font-weight: var(--fw-bold);
  margin-bottom: var(--space-2);
}
.detail-hero .hero-subtitle {
  font-size: var(--font-size-base);
  color: rgba(255,255,255,0.65);
  margin-bottom: var(--space-4);
}
.detail-hero .hero-meta {
  display: flex; gap: 20px;
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.5);
  justify-content: center;
  flex-wrap: wrap;
}
.detail-hero .hero-meta span { display: inline-flex; align-items: center; gap: 6px; }

.detail-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 40px var(--space-8) 60px;
}

/* ===== 详情布局 ===== */
.detail-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
}
@media(max-width:1024px) {
  .detail-layout { grid-template-columns: 1fr; }
  .detail-sidebar { position: static; }
}
.detail-sidebar { position: sticky; top: 90px; align-self: start; }
.sidebar-card {
  background: var(--brand-light-bg);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
}
.sidebar-card h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--fw-bold);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--brand-border);
}
.sidebar-card .info-row {
  display: flex; justify-content: space-between;
  padding: 8px 0;
  font-size: var(--font-size-sm);
  border-bottom: 1px dashed var(--brand-border);
}
.sidebar-card .info-row:last-child { border-bottom: none; }
.sidebar-card .info-row .label { color: var(--brand-text-secondary); }
.sidebar-card .info-row .value { font-weight: var(--fw-semibold); color: var(--brand-text); }
.sidebar-cta {
  display: block; width: 100%; padding: 12px; text-align: center;
  font-size: var(--font-size-sm); font-weight: var(--fw-semibold);
  color: var(--brand-white);
  background: var(--brand-primary);
  border-radius: var(--radius-md);
  margin-top: 14px;
  transition: all var(--transition-base);
}
.sidebar-cta:hover {
  color: var(--brand-white);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(26,111,255,0.3);
}

/* ===== 内容区 ===== */
.content-body {
  font-size: var(--font-size-base);
  line-height: 2;
  color: var(--brand-text);
}
.content-body p { margin-bottom: 18px; }
.content-body img {
  max-width: 100%; border-radius: var(--radius-lg);
  margin: 24px 0; box-shadow: var(--shadow-md);
}
.content-body h2, .content-body h3 {
  font-weight: var(--fw-bold);
  margin-top: 32px;
  margin-bottom: 14px;
}
.content-body h2 { font-size: var(--font-size-2xl); }
.content-body h3 { font-size: var(--font-size-xl); }
.content-body ul, .content-body ol { padding-left: 24px; margin-bottom: 18px; }
.content-body li { margin-bottom: 8px; }
.content-body blockquote {
  border-left: 4px solid var(--brand-primary);
  background: var(--brand-light-bg);
  padding: 16px 20px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 20px 0;
  color: var(--brand-text-secondary);
}
.content-body a { color: var(--brand-primary); text-decoration: underline; }

.summary-box {
  background: linear-gradient(135deg, #f0f7ff, #e8f4fd);
  border-left: 4px solid var(--brand-primary);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin-bottom: 32px;
  font-size: var(--font-size-sm);
  line-height: var(--lh-relaxed);
  color: var(--brand-text-secondary);
}

/* ===== 文章列表页（带侧边栏的两列布局） ===== */
.two-col-section { padding: 48px 0 60px; background: var(--brand-light-bg); }
.two-col-wrap {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-8);
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 36px;
  align-items: start;
}
@media(max-width:768px) {
  .two-col-wrap { grid-template-columns: 1fr; }
}

.two-col-sidebar { position: sticky; top: 90px; }
.sidebar-block {
  background: var(--brand-white);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
}
.sidebar-title {
  font-size: 20px;
  font-weight: var(--fw-bold);
  color: var(--brand-text);
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--brand-border);
}
.sidebar-item {
  display: block;
  padding: 13px 14px;
  font-size: 16px;
  color: var(--brand-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  margin-bottom: 4px;
  line-height: 1.4;
}
.sidebar-item:hover { background: rgba(26,111,255,0.06); color: var(--brand-primary); }
.sidebar-item-featured { font-weight: var(--fw-semibold); }
.sidebar-item-active { background: rgba(26,111,255,0.08); color: var(--brand-primary); font-weight: var(--fw-semibold); }

.two-col-main { min-width: 0; }

.list-row {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  text-decoration: none;
  color: inherit;
  border-bottom: 1px solid var(--brand-border);
  transition: opacity var(--transition-base);
}
.list-row:last-child { border-bottom: none; }
.list-row:hover { opacity: 0.85; }
.list-row-body { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.list-row-title {
  font-size: var(--font-size-base);
  font-weight: var(--fw-semibold);
  color: var(--brand-text);
  margin: 0 0 8px;
  line-height: var(--lh-snug);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.list-row-summary {
  font-size: var(--font-size-sm);
  color: var(--brand-text-secondary);
  line-height: var(--lh-relaxed);
  margin: 0 0 10px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.list-row-date {
  font-size: var(--font-size-xs);
  color: var(--brand-text-light);
  display: flex; align-items: center; gap: 6px;
}

.list-empty { text-align: center; padding: 60px 20px; color: var(--brand-text-light); }
.list-empty .empty-icon { font-size: 2.5rem; margin-bottom: 12px; }

.pagination {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-top: 36px;
}
.pagination a, .pagination span {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 38px; height: 38px;
  padding: 0 10px;
  font-size: var(--font-size-sm);
  color: var(--brand-text-secondary);
  text-decoration: none;
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}
.pagination a:hover { border-color: var(--brand-primary); color: var(--brand-primary); }
.pagination a.active { background: var(--brand-primary); color: var(--brand-white); border-color: var(--brand-primary); }

/* ===== 文章详情页 ===== */
.breadcrumb-bar {
  padding: 16px 0;
  background: var(--brand-light-bg);
  border-bottom: 1px solid var(--brand-border-light);
}
.breadcrumb-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-8);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-sm);
  color: var(--brand-text-secondary);
  flex-wrap: wrap;
}
.breadcrumb-inner a {
  color: var(--brand-text-secondary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}
.breadcrumb-inner a:hover { color: var(--brand-primary); background: rgba(26,111,255,0.06); }
.breadcrumb-sep { display: flex; align-items: center; color: var(--brand-border); }
.breadcrumb-current {
  color: var(--brand-text);
  font-weight: var(--fw-semibold);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  background: rgba(26,111,255,0.06);
  word-break: break-all;
}

.article-detail-section { padding: 40px 0 60px; }
.article-detail-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-8);
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
}
@media(max-width:1024px) {
  .article-detail-container { grid-template-columns: 1fr; }
}

.article-detail-main { min-width: 0; }
.article-detail-sidebar { position: sticky; top: 90px; align-self: start; }

.article-detail-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--brand-border);
}
.article-detail-title {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: var(--fw-bold);
  color: var(--brand-text);
  line-height: var(--lh-snug);
  margin: 0 0 16px;
}
.article-detail-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: var(--font-size-sm);
  color: var(--brand-text-light);
}
.article-detail-meta span,
.article-detail-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-detail-date {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand-text-light);
}
.article-detail-tags {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--brand-border);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.article-detail-tags::before {
  content: '标签：';
  font-size: var(--font-size-sm);
  color: var(--brand-text-secondary);
  font-weight: var(--fw-medium);
}
.article-detail-tags span {
  display: inline-block;
  padding: 6px 16px;
  background: var(--brand-light-bg);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  color: var(--brand-text-secondary);
  transition: all var(--transition-base);
}
.article-detail-tags span:hover {
  background: var(--brand-primary);
  color: var(--brand-white);
  border-color: var(--brand-primary);
}

/* 上/下篇文章导航 */
.article-prev-next {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 960px;
  margin: 0 auto;
}
@media(max-width:640px) {
  .article-prev-next { grid-template-columns: 1fr; }
}
.pn-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 24px;
  background: var(--brand-white);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--brand-text);
  transition: all var(--transition-base);
}
.pn-link:hover {
  border-color: var(--brand-primary);
  box-shadow: 0 4px 16px rgba(26,111,255,0.08);
  transform: translateY(-2px);
}
.pn-link span {
  font-size: var(--font-size-sm);
  font-weight: var(--fw-medium);
  line-height: var(--lh-snug);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}
.pn-link svg {
  flex-shrink: 0;
  color: var(--brand-primary);
  width: 20px;
  height: 20px;
}
.pn-prev { text-align: left; }
.pn-next { text-align: right; flex-direction: row-reverse; }
.pn-link:only-child { grid-column: 1 / -1; max-width: 480px; }
.pn-prev:only-child { justify-self: start; }
.pn-next:only-child { justify-self: end; }

/* 侧边栏卡片 */
.sidebar-card {
  background: var(--brand-light-bg);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
}
.sidebar-card h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--fw-bold);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--brand-border);
}
.sidebar-cta {
  display: block;
  width: 100%;
  padding: 12px;
  text-align: center;
  font-size: var(--font-size-sm);
  font-weight: var(--fw-semibold);
  color: var(--brand-white);
  background: var(--brand-primary);
  border-radius: var(--radius-md);
  margin-top: 14px;
  text-decoration: none;
  transition: all var(--transition-base);
}
.sidebar-cta:hover {
  color: var(--brand-white);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(26,111,255,0.3);
}

/* ===== 图库 ===== */
.gallery-section { margin-bottom: 40px; }
.gallery-section h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--fw-bold);
  margin-bottom: 20px;
  display: flex; align-items: center; gap: 10px;
}
.gallery-grid-view {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}
.gallery-grid-view .gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  position: relative;
  aspect-ratio: 1;
  background: var(--brand-light-bg-alt);
}
.gallery-grid-view .gallery-item img, .gallery-grid-view .gallery-item video {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s ease;
}
.gallery-grid-view .gallery-item:hover img { transform: scale(1.08); }
.gallery-grid-view .gallery-item .play-icon {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem; color: var(--brand-white);
  background: rgba(0,0,0,0.3);
  opacity: 0; transition: opacity var(--transition-base);
}
.gallery-grid-view .gallery-item:hover .play-icon { opacity: 1; }

/* ===== 参数表格 ===== */
.params-section { margin-bottom: 40px; }
.params-section h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--fw-bold);
  margin-bottom: 20px;
  display: flex; align-items: center; gap: 10px;
}
.params-table-wrap { overflow-x: auto; }
.params-table {
  width: 100%;
  border-collapse: collapse;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.params-table td {
  padding: 14px 18px;
  border: 1px solid var(--brand-border);
  font-size: var(--font-size-sm);
  vertical-align: top;
}
.params-table td:first-child {
  background: var(--brand-light-bg);
  font-weight: var(--fw-semibold);
  width: 180px;
  white-space: nowrap;
}
.params-table tr:last-child td:first-child { border-bottom-left-radius: var(--radius-lg); }
.params-table tr:last-child td:last-child { border-bottom-right-radius: var(--radius-lg); }

/* ===== 编辑器内容 ===== */
.editor-section { margin-top: 40px; }
.editor-section .editor-block {
  margin-bottom: 36px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--brand-border);
}
.editor-section .editor-block:last-child { border-bottom: none; }
.editor-section .editor-title {
  font-size: var(--font-size-xl);
  font-weight: var(--fw-bold);
  margin-bottom: 14px;
  color: var(--brand-text);
}

/* ===== 关联推荐 ===== */
.related-section { margin-top: 50px; padding-top: 40px; border-top: 1px solid var(--brand-border); }
.related-section h2 { font-size: var(--font-size-xl); font-weight: var(--fw-bold); margin-bottom: 24px; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.related-card {
  display: block; text-decoration: none; color: inherit;
  background: var(--brand-white);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}
.related-card:hover {
  box-shadow: 0 4px 20px rgba(13,27,62,0.06);
  border-color: var(--brand-border-dark);
  transform: translateY(-2px);
}
.related-card img { width: 100%; height: 150px; object-fit: cover; }
.related-card .related-body { padding: 14px 16px 16px; }
.related-card .related-body h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--fw-semibold);
  margin-bottom: 4px;
  line-height: var(--lh-snug);
}
.related-card .related-body p {
  font-size: var(--font-size-xs);
  color: var(--brand-text-secondary);
}

/* ===== Hub筛选 ===== */
.hub-filters {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 40px 0 50px;
  padding: 0 var(--space-8);
}
.hub-filters .filter-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 24px;
  font-size: var(--font-size-sm);
  font-weight: var(--fw-semibold);
  color: var(--brand-text-secondary);
  background: var(--brand-white);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
}
.hub-filters .filter-btn:hover { border-color: var(--brand-primary); color: var(--brand-primary); }
.hub-filters .filter-btn.active {
  background: var(--brand-primary);
  color: var(--brand-white);
  border-color: var(--brand-primary);
}

/* ===== 文章列表（左图右文） ===== */
.article-list-view {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-8);
}
.article-row {
  display: flex; gap: 24px;
  padding: 28px 0;
  text-decoration: none; color: inherit;
  border-bottom: 1px solid var(--brand-border);
  transition: opacity var(--transition-base);
}
.article-row:hover { opacity: 0.85; }
.article-row:last-child { border-bottom: none; }
.article-row .art-thumb {
  width: 260px; min-height: 170px; flex-shrink: 0;
  border-radius: var(--radius-lg); overflow: hidden; background: var(--brand-light-bg-alt);
}
.article-row .art-thumb img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s ease;
}
.article-row:hover .art-thumb img { transform: scale(1.05); }
.article-row .art-info { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.article-row .art-info h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--fw-semibold);
  color: var(--brand-text);
  margin-bottom: var(--space-2);
}
.article-row .art-info .art-summary {
  font-size: var(--font-size-sm);
  color: var(--brand-text-secondary);
  line-height: var(--lh-relaxed);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  margin-bottom: var(--space-3);
}
.article-row .art-info .art-meta {
  font-size: var(--font-size-xs);
  color: var(--brand-text-light);
  display: flex; gap: 16px;
}
@media(max-width:768px) {
  .article-row { flex-direction: column; gap: 14px; }
  .article-row .art-thumb { width: 100%; height: 200px; }
}

/* ===== 列表页顶部横幅 ===== */
.page-hero {
  position: relative;
  padding: calc(var(--nav-height) + 60px) 0 80px;
  background-color: var(--brand-dark-bg);
  color: var(--brand-white);
  text-align: center;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  opacity: 0.03;
  background-image:
    radial-gradient(circle at 25% 50%, #ffffff 1px, transparent 1px),
    radial-gradient(circle at 75% 50%, #ffffff 1px, transparent 1px);
  background-size: 60px 60px;
}
.page-hero .hero-inner { position: relative; z-index: 2; }
.page-hero .hero-breadcrumb {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--space-3);
}
.page-hero .hero-breadcrumb a { color: rgba(255,255,255,0.65); }
.page-hero .hero-breadcrumb a:hover { color: var(--brand-white); }
.page-hero h1 {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: var(--fw-bold);
  margin-bottom: var(--space-3);
  line-height: var(--lh-tight);
}
.page-hero p {
  font-size: clamp(0.95rem, 1.3vw, 1.05rem);
  color: rgba(255,255,255,0.65);
  max-width: 700px;
  margin: 0 auto;
  line-height: var(--lh-relaxed);
}

/* ===== 列表工具栏 ===== */
.list-toolbar {
  max-width: var(--container-max);
  margin: 0 auto 32px;
  padding: 0 var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.list-toolbar .toolbar-left { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.list-toolbar .toolbar-right { font-size: var(--font-size-xs); color: var(--brand-text-light); }
.list-toolbar .filter-tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 18px;
  font-size: var(--font-size-sm);
  font-weight: var(--fw-medium);
  color: var(--brand-text-secondary);
  background: var(--brand-white);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
}
.list-toolbar .filter-tag:hover { border-color: var(--brand-primary); color: var(--brand-primary); }
.list-toolbar .filter-tag.active {
  background: var(--brand-primary);
  color: var(--brand-white);
  border-color: var(--brand-primary);
}
.list-toolbar .search-input {
  padding: 8px 16px 8px 36px;
  font-size: var(--font-size-sm);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-full);
  outline: none;
  background: var(--brand-white);
  min-width: 200px;
  transition: border-color var(--transition-base);
}
.list-toolbar .search-input:focus { border-color: var(--brand-primary); }
.list-toolbar .search-wrap { position: relative; }
.list-toolbar .search-icon {
  position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
  color: var(--brand-text-light);
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media(max-width:767px) {
  .faq-grid { grid-template-columns: 1fr; gap: 0; }
}
.faq-grid-item {
  background: var(--brand-white);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all 0.25s ease;
}
.faq-grid-item:hover { border-color: var(--brand-primary-light); }
@media(max-width:767px) {
  .faq-grid-item { border: none; border-radius: 0; border-bottom: 1px solid var(--brand-border); padding: 0; }
  .faq-grid-item:last-child { border-bottom: none; }
}
.faq-q {
  font-size: var(--font-size-base);
  font-weight: var(--fw-semibold);
  color: var(--brand-text);
  margin: 0 0 12px;
  line-height: var(--lh-snug);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.faq-q::before {
  content: 'Q';
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-sm);
  background: var(--brand-primary);
  color: var(--brand-white);
  font-size: var(--font-size-xs);
  font-weight: var(--fw-bold);
  line-height: 1;
}
.faq-a {
  font-size: var(--font-size-sm);
  color: var(--brand-text-secondary);
  line-height: var(--lh-relaxed);
  padding-left: 34px;
}
@media(max-width:767px) {
  .faq-grid-item { background: transparent; }
  .faq-q { padding: 16px 32px 16px 0; margin: 0; cursor: pointer; position: relative; }
  .faq-q::after { content: ''; position: absolute; right: 4px; top: 50%; margin-top: -3px; width: 10px; height: 10px; border-right: 2px solid var(--brand-text-light); border-bottom: 2px solid var(--brand-text-light); transform: rotate(45deg); transition: transform 0.25s ease; }
  .faq-grid-item.active .faq-q::after { transform: rotate(-135deg); margin-top: -6px; }
  .faq-a { display: none; padding: 0 0 16px 34px; }
  .faq-grid-item.active .faq-a { display: block; }
}

/* ===== 编辑器选项卡 ===== */
.tabs-nav {
  display: flex; flex-wrap: wrap; gap: 4px;
  margin-bottom: 32px;
  border-bottom: 2px solid var(--brand-border);
  overflow-x: auto;
}

/* ===== Tailwind 工具类替代 ===== */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-1 { flex: 1; }
.inline-flex { display: inline-flex; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.shrink-0 { flex-shrink: 0; }
.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.gap-5 { gap: 20px; }
.gap-6 { gap: 24px; }
.gap-8 { gap: 32px; }
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1,1fr); }
.grid-cols-2 { grid-template-columns: repeat(2,1fr); }
.col-span-2 { grid-column: span 2; }
.overflow-hidden { overflow: hidden; }
.relative { position: relative; }
.absolute { position: absolute; }
.inset-0 { inset: 0; }
.z-10 { z-index: 10; }
.w-4 { width: 16px; }
.w-5 { width: 20px; }
.w-6 { width: 24px; }
.w-8 { width: 32px; }
.w-12 { width: 48px; }
.w-14 { width: 56px; }
.w-full { width: 100%; }
.h-4 { height: 16px; }
.h-5 { height: 20px; }
.h-6 { height: 24px; }
.h-8 { height: 32px; }
.h-12 { height: 48px; }
.h-14 { height: 56px; }
.max-w-3xl { max-width: 768px; }
.max-w-4xl { max-width: 896px; }
.max-w-xl { max-width: 576px; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mt-1 { margin-top: 4px; }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.mt-16 { margin-top: 64px; }
.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.mb-5 { margin-bottom: 20px; }
.mb-6 { margin-bottom: 24px; }
.mb-10 { margin-bottom: 40px; }
.mb-12 { margin-bottom: 48px; }
.p-6 { padding: 24px; }
.px-8 { padding-left: 32px; padding-right: 32px; }
.px-4 { padding-left: 16px; padding-right: 16px; }
.py-3 { padding-top: 12px; padding-bottom: 12px; }
.text-center { text-align: center; }
.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.font-medium { font-weight: var(--fw-medium); }
.font-semibold { font-weight: var(--fw-semibold); }
.font-bold { font-weight: var(--fw-bold); }
.text-white { color: #fff; }
.leading-relaxed { line-height: var(--lh-relaxed); }
.cursor-pointer { cursor: pointer; }
.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: 9999px; }
.border { border: 1px solid var(--brand-border); }
.bg-white { background-color: #fff; }
.space-y-4 > * + * { margin-top: 16px; }
.transition-colors { transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base); }

@media(min-width:640px) {
  .sm\:flex-row { flex-direction: row; }
  .sm\:grid-cols-2 { grid-template-columns: repeat(2,1fr); }
}
@media(min-width:768px) {
  .md\:col-span-1 { grid-column: span 1; }
  .md\:justify-start { justify-content: flex-start; }
  .md\:grid-cols-2 { grid-template-columns: repeat(2,1fr); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3,1fr); }
  .md\:grid-cols-5 { grid-template-columns: repeat(5,1fr); }
  .md\:gap-6 { gap: 24px; }
}
@media(min-width:1024px) {
  .lg\:grid-cols-3 { grid-template-columns: repeat(3,1fr); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4,1fr); }
  .lg\:grid-cols-6 { grid-template-columns: repeat(6,1fr); }
}

/* ===== 关于我们 ===== */
.about-hero {
  position: relative;
  padding: calc(var(--nav-height) + 50px) 0 60px;
  background: linear-gradient(135deg, #0a1628 0%, #152040 50%, #1a2d50 100%);
  color: #fff;
  text-align: center;
  overflow: hidden;
}
.about-hero-bg {
  position: absolute; inset: 0;
  opacity: 0.04;
  background-image:
    radial-gradient(circle at 25% 50%, #fff 1px, transparent 1px),
    radial-gradient(circle at 75% 50%, #fff 1px, transparent 1px);
  background-size: 60px 60px;
}
.about-hero-bg::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 100%, rgba(26,111,255,0.1) 0%, transparent 60%);
}
.about-hero-inner { position: relative; z-index: 2; }
.about-hero h1 {
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: var(--fw-bold);
  margin: 0 0 14px;
  line-height: 1.15;
}
.about-hero p {
  font-size: clamp(15px, 1.1vw, 18px);
  color: rgba(255,255,255,0.65);
  margin: 0;
}

/* Common section header */
.about-section-header { text-align: center; margin-bottom: 44px; }
.about-section-header h2 {
  font-size: clamp(24px, 2.4vw, 34px);
  font-weight: var(--fw-bold);
  color: #0a1628;
  margin: 0 0 10px;
  line-height: 1.2;
}
.about-section-header p {
  font-size: 16px;
  color: var(--brand-text-secondary);
  max-width: 540px;
  margin: 0 auto;
}

/* Module 1: Intro */
.about-intro-section { padding: 80px 0; background: #fff; }
.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
@media(max-width:768px) {
  .about-intro-grid { grid-template-columns: 1fr; gap: 36px; }
}
.about-intro-text .about-section-tag { margin-bottom: 12px; }
.about-intro-text h2 {
  font-size: clamp(22px, 2.2vw, 30px);
  font-weight: var(--fw-bold);
  color: #0a1628;
  margin: 0 0 16px;
}
.about-intro-text p {
  font-size: 16px;
  color: var(--brand-text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}
.about-intro-stats {
  display: flex;
  gap: 32px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--brand-border);
}
.about-intro-stat { text-align: center; }
.about-intro-num {
  display: block;
  font-size: 28px;
  font-weight: var(--fw-bold);
  color: var(--brand-primary);
  line-height: 1;
}
.about-intro-label {
  font-size: 12px;
  color: var(--brand-text-light);
  margin-top: 6px;
}
.about-intro-image {
  position: relative;
}
.about-intro-img {
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.06);
  display: block;
  position: relative;
  z-index: 2;
}
.about-intro-image-deco {
  position: absolute;
  top: -12px;
  left: -12px;
  width: 100%;
  height: 100%;
  border: 2px solid rgba(26,111,255,0.08);
  border-radius: 20px;
  z-index: 1;
}

/* Module 2: Services */
.about-services-section { padding: 80px 0; background: var(--brand-light-bg); }
.about-services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
@media(max-width:1024px) { .about-services-grid { grid-template-columns: repeat(2, 1fr); } }
@media(max-width:640px) { .about-services-grid { grid-template-columns: 1fr; } }
.about-service-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--brand-border);
  border-radius: 16px;
  padding: 32px 24px 28px;
  display: flex;
  flex-direction: column;
  transition: all 0.35s ease;
  overflow: hidden;
}
.about-service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 30px rgba(26,111,255,0.08);
  border-color: rgba(26,111,255,0.12);
}
.about-service-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(26,111,255,0.08), rgba(26,111,255,0.02));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  transition: all 0.35s ease;
}
.about-service-icon svg { width: 20px; height: 20px; color: var(--brand-primary); transition: all 0.35s ease; }
.about-service-card:hover .about-service-icon {
  background: var(--brand-primary);
}
.about-service-card:hover .about-service-icon svg { color: #fff; transform: scale(1.05); }
.about-service-title {
  font-size: 19px;
  font-weight: var(--fw-semibold);
  color: #0a1628;
  margin: 0 0 14px;
}
.about-service-list { list-style: none; padding: 0; margin: 0 0 20px; flex: 1; }
.about-service-list li {
  font-size: 15px;
  color: var(--brand-text-secondary);
  padding: 6px 0;
  padding-left: 16px;
  position: relative;
  line-height: 1.5;
}
.about-service-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 13px;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--brand-primary);
  opacity: 0.3;
}
.about-service-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  font-size: 13px;
  font-weight: var(--fw-semibold);
  color: var(--brand-primary);
  background: rgba(26,111,255,0.06);
  border: 1px solid rgba(26,111,255,0.1);
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.3s ease;
}
.about-service-btn:hover {
  background: var(--brand-primary);
  color: #fff;
}
.about-service-num {
  position: absolute;
  right: 18px;
  bottom: 10px;
  font-size: 56px;
  font-weight: 900;
  color: rgba(26,111,255,0.03);
  line-height: 1;
  pointer-events: none;
  user-select: none;
  transition: all 0.4s ease;
}
.about-service-card:hover .about-service-num {
  color: rgba(26,111,255,0.07);
  transform: scale(1.05);
}

/* Module 3: Advantages */
.about-advantages-section { padding: 80px 0; background: #fff; }
.about-advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media(max-width:1024px) { .about-advantages-grid { grid-template-columns: repeat(2, 1fr); } }
@media(max-width:640px) { .about-advantages-grid { grid-template-columns: 1fr; } }
.about-advantage-card {
  background: var(--brand-light-bg);
  border: 1px solid var(--brand-border);
  border-radius: 14px;
  padding: 28px 24px;
  transition: all 0.35s ease;
  display: flex;
  flex-direction: column;
}
.about-advantage-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 24px rgba(26,111,255,0.06);
  border-color: rgba(26,111,255,0.1);
}
.about-advantage-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(26,111,255,0.08), rgba(26,111,255,0.02));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  transition: all 0.35s ease;
}
.about-advantage-icon svg { width: 20px; height: 20px; color: var(--brand-primary); transition: all 0.35s ease; }
.about-advantage-card:hover .about-advantage-icon {
  background: var(--brand-primary);
}
.about-advantage-card:hover .about-advantage-icon svg { color: #fff; transform: scale(1.05); }
.about-advantage-card h3 {
  font-size: 18px;
  font-weight: var(--fw-semibold);
  color: #0a1628;
  margin: 0 0 8px;
}
.about-advantage-card p {
  font-size: 15px;
  color: var(--brand-text-secondary);
  line-height: 1.6;
  margin: 0 0 14px;
  flex: 1;
}
.about-advantage-link {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  font-weight: var(--fw-semibold);
  color: var(--brand-primary);
  text-decoration: none;
  padding: 6px 16px;
  background: rgba(26,111,255,0.06);
  border-radius: 6px;
  transition: all 0.3s ease;
  align-self: flex-start;
}
.about-advantage-link:hover {
  background: var(--brand-primary);
  color: #fff;
}

/* Module 4: Flow */
.about-flow-section { padding: 80px 0; background: var(--brand-light-bg); overflow: hidden; }
.about-flow-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.about-flow-row {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  gap: 0;
}
.about-flow-step {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
  background: #fff;
  border: 1px solid var(--brand-border);
  border-radius: 12px;
  padding: 16px 18px;
  transition: all 0.3s ease;
  position: relative;
}
.about-flow-step + .about-flow-step {
  margin-left: -1px;
  border-left: 1px solid var(--brand-border);
}
.about-flow-step:not(:first-child) {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}
.about-flow-step:not(:last-child) {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}
.about-flow-step:hover {
  border-color: var(--brand-primary);
  box-shadow: 0 2px 12px rgba(26,111,255,0.06);
  transform: translateY(-2px);
}
.about-flow-step:last-child .about-flow-step-arrow { display: none; }
.about-flow-num {
  width: 30px; height: 30px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px;
  font-weight: var(--fw-bold);
  background: rgba(26,111,255,0.08);
  color: var(--brand-primary);
  flex-shrink: 0;
  transition: all 0.3s ease;
}
.about-flow-step:hover .about-flow-num {
  background: var(--brand-primary);
  color: #fff;
}
.about-flow-content h4 {
  font-size: 15px;
  font-weight: var(--fw-semibold);
  color: #0a1628;
  margin: 0;
  white-space: nowrap;
}
.about-flow-step-arrow {
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  margin-left: 6px;
}
.about-flow-step-arrow svg {
  width: 16px;
  height: 16px;
}
@media(max-width:768px) {
  .about-intro-section,
  .about-services-section,
  .about-advantages-section,
  .about-flow-section { padding: 50px 0; }
  .about-flow-row { flex-wrap: wrap; gap: 6px; justify-content: center; }
  .about-flow-step {
    flex: 0 0 auto;
    padding: 12px 14px;
    border-radius: 10px;
  }
  .about-flow-step + .about-flow-step {
    margin-left: 0;
    border-left: 1px solid var(--brand-border);
  }
  .about-flow-step:not(:first-child),
  .about-flow-step:not(:last-child) {
    border-radius: 10px;
  }
  .about-flow-content h4 { font-size: 13px; }
  .about-service-btn { font-size: 12px; }
  .about-flow-step-arrow svg { width: 14px; height: 14px; }
}

/* ===== 联系我们 ===== */
.contact-hero {
  position: relative;
  padding: calc(var(--nav-height) + 100px) 0 90px;
  background: linear-gradient(135deg, #0a1628 0%, #152040 50%, #1a2d50 100%);
  color: #fff;
  text-align: center;
  overflow: hidden;
}
.contact-hero-bg {
  position: absolute; inset: 0;
  opacity: 0.04;
  background-image:
    radial-gradient(circle at 25% 50%, #fff 1px, transparent 1px),
    radial-gradient(circle at 75% 50%, #fff 1px, transparent 1px);
  background-size: 60px 60px;
}
.contact-hero-bg::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 100%, rgba(26,111,255,0.1) 0%, transparent 60%);
}
.contact-hero-inner { position: relative; z-index: 2; }
.contact-hero-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: var(--fw-bold);
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.2em;
  border: 1px solid rgba(255,255,255,0.1);
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 14px;
  text-transform: uppercase;
}
.contact-hero h1 {
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: var(--fw-bold);
  margin: 0 0 14px;
  line-height: 1.15;
}
.contact-hero p {
  font-size: clamp(15px, 1.1vw, 18px);
  color: rgba(255,255,255,0.65);
  margin: 0;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}
.contact-main { padding: 80px 0; background: var(--brand-light-bg); }
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
@media(max-width:640px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-card {
  background: #fff;
  border: 1px solid var(--brand-border);
  border-radius: 16px;
  padding: 32px 28px;
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
}
@media(min-width:1025px) { .contact-card { min-height: 230px; } }
.contact-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-primary), #7cafff);
  opacity: 0;
  transition: opacity 0.35s ease;
}
.contact-card:hover::before { opacity: 1; }
.contact-card--phone::before { background: linear-gradient(90deg, #2563eb, #60a5fa); }
.contact-card--email::before { background: linear-gradient(90deg, #7c3aed, #a78bfa); }
.contact-card--address::before { background: linear-gradient(90deg, #059669, #34d399); }
.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(26,111,255,0.06);
  border-color: rgba(26,111,255,0.12);
}
.contact-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(26,111,255,0.08), rgba(26,111,255,0.02));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  transition: all 0.35s ease;
}
.contact-card-icon svg {
  width: 22px;
  height: 22px;
  color: var(--brand-primary);
  transition: all 0.35s ease;
}
.contact-card:hover .contact-card-icon {
  background: var(--brand-primary);
}
.contact-card:hover .contact-card-icon svg {
  color: #fff;
  transform: scale(1.05);
}
.contact-card h3 {
  font-size: 17px;
  font-weight: var(--fw-semibold);
  color: #0a1628;
  margin: 0 0 8px;
}
.contact-card-value {
  display: inline-block;
  font-size: 18px;
  font-weight: var(--fw-bold);
  color: var(--brand-primary);
  text-decoration: none;
  transition: all 0.25s ease;
}
.contact-card-value:hover { opacity: 0.8; }
.contact-card-value--text {
  font-size: 16px;
  color: #334155;
  font-weight: var(--fw-medium);
}
.contact-card-tip {
  font-size: 13px;
  color: var(--brand-text-light);
  margin: 6px 0 0;
}
.contact-wechat-row {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 4px;
}
.contact-wechat-qr {
  width: 130px;
  height: 130px;
  border-radius: 10px;
  border: 1px solid var(--brand-border);
  object-fit: cover;
  flex-shrink: 0;
}
.contact-wechat-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.contact-wechat-id {
  font-size: 16px;
  color: #334155;
}
.contact-wechat-id strong { color: #0a1628; }
.contact-bottom { margin-top: 48px; }
.contact-bottom-divider {
  text-align: center;
  position: relative;
  margin-bottom: 28px;
}
.contact-bottom-divider::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 1px;
  background: var(--brand-border);
}
.contact-bottom-divider span {
  position: relative;
  z-index: 2;
  background: var(--brand-light-bg);
  padding: 0 20px;
  font-size: 13px;
  color: var(--brand-text-light);
}
.contact-bottom-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
}
@media(max-width:640px) {
  .contact-bottom-actions { flex-direction: column; align-items: center; }
}
.contact-bottom-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: var(--fw-semibold);
  text-decoration: none;
  transition: all 0.3s ease;
}
.contact-bottom-btn svg {
  width: 18px;
  height: 18px;
}
.contact-bottom-btn--primary {
  background: var(--brand-primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(26,111,255,0.2);
}
.contact-bottom-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(26,111,255,0.3);
}
.contact-bottom-btn--secondary {
  background: #fff;
  color: var(--brand-primary);
  border: 1px solid var(--brand-border);
}
.contact-bottom-btn--secondary:hover {
  border-color: var(--brand-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(26,111,255,0.06);
}
@media(max-width:768px) {
  .contact-main { padding: 50px 0; }
  .contact-card { padding: 24px 20px; }
  .contact-card-value { font-size: 16px; }
  .contact-wechat-row { flex-direction: column; align-items: flex-start; gap: 12px; }
}

/* ===== About Page Entrance Animation ===== */
.anim-item {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.anim-item.in-view {
  opacity: 1;
  transform: translateY(0);
}  -