/* ============================================
   金华市丽联信息技术有限公司官网样式
   ============================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: hsl(220, 14%, 14%);
  background-color: #ffffff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

ul,
ol {
  list-style: none;
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
}

/* ---------- 颜色变量 ---------- */
:root {
  --primary: hsl(217, 91%, 60%);
  --primary-dark: hsl(218, 89%, 48%);
  --primary-light: hsl(213, 96%, 89%);
  --accent: hsl(188, 95%, 45%);
  --accent-dark: hsl(189, 94%, 40%);
  --success: hsl(142, 71%, 45%);
  --background: hsl(222, 47%, 11%);
  --background-light: hsl(222, 47%, 15%);
  --foreground: hsl(220, 14%, 14%);
  --muted-foreground: hsl(215, 16%, 47%);
  --card-bg: hsl(0, 0%, 100%);
  --border: hsl(220, 13%, 91%);
  --muted-bg: #f8fafc;
  --radius-xl: 12px;
  --radius-lg: 8px;
  --radius-md: 6px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.06);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.04);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.08), 0 8px 10px -6px rgb(0 0 0 / 0.04);
  --container-max: 1200px;
}

/* ---------- 通用工具类 ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

@media (min-width: 640px) {
  .container { padding: 0 24px; }
}

@media (min-width: 1024px) {
  .container { padding: 0 32px; }
}

.section {
  padding: 80px 0;
}

@media (min-width: 768px) {
  .section { padding: 96px 0; }
}

.section-bg-muted {
  background-color: var(--muted-bg);
}

.section-bg-dark {
  background-color: var(--background);
  color: #ffffff;
}

/* ---------- Badge ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 9999px;
  background-color: hsla(217, 91%, 60%, 0.1);
  color: var(--primary);
  border: 1px solid hsla(217, 91%, 60%, 0.2);
}

.badge-accent {
  background-color: hsla(188, 95%, 45%, 0.12);
  color: var(--accent);
  border-color: hsla(188, 95%, 45%, 0.25);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all 0.25s ease;
  white-space: nowrap;
  cursor: pointer;
  text-align: center;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px -4px hsla(217, 91%, 60%, 0.5);
}

.btn-accent {
  background-color: var(--accent);
  color: #ffffff;
}

.btn-accent:hover {
  background-color: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px -4px hsla(188, 95%, 45%, 0.5);
}

.btn-outline {
  background-color: transparent;
  color: #ffffff;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-1px);
}

.btn-outline-primary {
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline-primary:hover {
  background-color: var(--primary);
  color: #ffffff;
}

/* ---------- 渐变文字 ---------- */
.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- 网格线背景 ---------- */
.grid-bg {
  background-color: var(--background);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  position: relative;
  overflow: hidden;
}

.grid-bg::before {
  content: "";
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(
    ellipse at center,
    hsla(217, 91%, 60%, 0.18) 0%,
    hsla(188, 95%, 45%, 0.08) 40%,
    transparent 70%
  );
  pointer-events: none;
}

/* ---------- Section Header ---------- */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-header .badge {
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: 28px;
  margin-bottom: 12px;
  color: var(--foreground);
}

@media (min-width: 768px) {
  .section-header h2 { font-size: 36px; }
}

.section-header p {
  font-size: 16px;
  color: var(--muted-foreground);
  line-height: 1.7;
}

.section-bg-dark .section-header h2 { color: #ffffff; }
.section-bg-dark .section-header p { color: rgba(255, 255, 255, 0.7); }

/* ---------- 导航栏 ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: #ffffff;
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
  border-bottom-color: var(--border);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.navbar-logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.3px;
  flex-shrink: 0;
}

.navbar-logo span {
  color: var(--accent);
}

.nav-links {
  display: none;
  align-items: center;
  gap: 4px;
}

@media (min-width: 1024px) {
  .nav-links { display: flex; }
}

.nav-links a {
  position: relative;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--foreground);
  border-radius: var(--radius-md);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--primary));
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.25s ease;
}

.nav-links a:hover {
  color: var(--primary);
}

.nav-links a:hover::after {
  transform: scaleX(1);
}

.nav-cta {
  display: none;
}

@media (min-width: 1024px) {
  .nav-cta { display: inline-flex; }
}

/* 汉堡菜单按钮 */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--radius-md);
}

@media (min-width: 1024px) {
  .menu-toggle { display: none; }
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--foreground);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 移动端菜单面板 */
.mobile-menu {
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ffffff;
  padding: 24px 20px;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  z-index: 999;
  overflow-y: auto;
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-menu a {
  display: block;
  padding: 14px 12px;
  font-size: 16px;
  font-weight: 500;
  color: var(--foreground);
  border-bottom: 1px solid var(--border);
}

.mobile-menu a:hover {
  color: var(--primary);
  background-color: var(--muted-bg);
}

.mobile-menu .mobile-cta {
  margin-top: 24px;
  width: 100%;
}

/* ---------- Hero 区域 ---------- */
.hero {
  padding: 140px 0 100px;
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .hero { padding: 180px 0 120px; }
}

@media (min-width: 1024px) {
  .hero { padding: 200px 0 140px; }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 880px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 9999px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 28px;
  backdrop-filter: blur(8px);
}

.hero-badge::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.hero h1 {
  font-size: 36px;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #ffffff;
}

@media (min-width: 640px) {
  .hero h1 { font-size: 44px; }
}

@media (min-width: 768px) {
  .hero h1 { font-size: 54px; }
}

@media (min-width: 1024px) {
  .hero h1 { font-size: 64px; }
}

.hero-subtitle {
  font-size: 17px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 768px) {
  .hero-subtitle { font-size: 18px; }
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: 14px;
  justify-content: center;
  align-items: center;
  margin-bottom: 60px;
}

@media (min-width: 640px) {
  .hero-buttons {
    flex-direction: row;
    gap: 16px;
  }
}

.hero-buttons .btn {
  width: 100%;
  max-width: 200px;
}

@media (min-width: 640px) {
  .hero-buttons .btn { width: auto; }
}

/* 信任标签 */
.hero-trust {
  display: flex;
  flex-direction: column;
  gap: 16px;
  justify-content: center;
  align-items: center;
}

@media (min-width: 640px) {
  .hero-trust {
    flex-direction: row;
    gap: 20px;
  }
}

@media (min-width: 768px) {
  .hero-trust { gap: 40px; }
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 15px;
}

.trust-number {
  font-size: 24px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

@media (min-width: 768px) {
  .trust-number { font-size: 28px; }
}

/* ---------- 服务卡片 ---------- */
.services-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); }
}

.service-card {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  flex-shrink: 0;
}

.service-icon.primary {
  background: linear-gradient(135deg, var(--primary), hsl(217, 91%, 50%));
  box-shadow: 0 4px 14px -4px hsla(217, 91%, 60%, 0.5);
}

.service-icon.accent {
  background: linear-gradient(135deg, var(--accent), hsl(188, 95%, 38%));
  box-shadow: 0 4px 14px -4px hsla(188, 95%, 45%, 0.5);
}

.service-icon.success {
  background: linear-gradient(135deg, var(--success), hsl(142, 71%, 38%));
  box-shadow: 0 4px 14px -4px hsla(142, 71%, 45%, 0.5);
}

.service-icon.orange {
  background: linear-gradient(135deg, hsl(25, 95%, 55%), hsl(20, 90%, 48%));
  box-shadow: 0 4px 14px -4px hsla(25, 95%, 55%, 0.5);
}

.service-icon.purple {
  background: linear-gradient(135deg, hsl(262, 83%, 65%), hsl(262, 75%, 55%));
  box-shadow: 0 4px 14px -4px hsla(262, 83%, 65%, 0.5);
}

.service-icon.pink {
  background: linear-gradient(135deg, hsl(330, 81%, 65%), hsl(330, 75%, 55%));
  box-shadow: 0 4px 14px -4px hsla(330, 81%, 65%, 0.5);
}

.service-card h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 12px;
}

.service-card p {
  font-size: 14px;
  color: var(--muted-foreground);
  line-height: 1.7;
  margin-bottom: 20px;
}

.service-features {
  margin-bottom: 20px;
}

.service-features li {
  font-size: 13px;
  color: var(--muted-foreground);
  padding: 4px 0 4px 18px;
  position: relative;
}

.service-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  transition: gap 0.2s ease;
}

.service-link:hover {
  gap: 10px;
  color: var(--primary-dark);
}

.service-link::after {
  content: "→";
  font-size: 14px;
}

/* ---------- 服务区域 ---------- */
.regions-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(2, 1fr);
  max-width: 720px;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .regions-grid { grid-template-columns: repeat(3, 1fr); }
}

.region-card {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
  text-align: center;
  font-weight: 600;
  font-size: 16px;
  color: var(--foreground);
  transition: all 0.25s ease;
  cursor: default;
}

.region-card:hover {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #ffffff;
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* ---------- 案例卡片 ---------- */
.cases-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 48px;
}

@media (min-width: 768px) {
  .cases-header {
    flex-direction: row;
    align-items: flex-end;
  }
}

.cases-header .section-header {
  margin-bottom: 0;
  text-align: center;
}

@media (min-width: 768px) {
  .cases-header .section-header { text-align: left; }
}

.view-all-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  white-space: nowrap;
}

.view-all-link:hover {
  color: var(--primary-dark);
}

.cases-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
}

.case-card {
  background-color: #ffffff;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.case-cover {
  position: relative;
  height: 200px;
  overflow: hidden;
}

@media (min-width: 768px) {
  .case-cover { height: 220px; }
}

.case-cover.bg-blue-cyan {
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

.case-cover.bg-orange-red {
  background: linear-gradient(135deg, hsl(25, 95%, 55%), hsl(350, 90%, 55%));
}

.case-cover.bg-green-cyan {
  background: linear-gradient(135deg, hsl(142, 71%, 45%), var(--accent));
}

.case-cover.bg-purple-blue {
  background: linear-gradient(135deg, hsl(262, 83%, 65%), var(--primary));
}

.case-cover::before {
  content: "";
  position: absolute;
  top: -30px;
  right: -30px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
}

.case-cover::after {
  content: "";
  position: absolute;
  bottom: -40px;
  left: -20px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}

.case-industry-tag {
  position: absolute;
  top: 20px;
  left: 20px;
  z-index: 2;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
  border-radius: 9999px;
  font-size: 13px;
  font-weight: 500;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.case-body {
  padding: 24px;
}

.case-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 10px;
  line-height: 1.4;
}

.case-body p {
  font-size: 14px;
  color: var(--muted-foreground);
  line-height: 1.7;
  margin-bottom: 16px;
}

.case-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  transition: gap 0.2s ease;
}

.case-link:hover {
  gap: 10px;
}

.case-link::after {
  content: "→";
}

/* ---------- 优势卡片 ---------- */
.advantages-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
}

.advantage-card {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: all 0.3s ease;
}

.advantage-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.advantage-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  background: linear-gradient(135deg, hsla(217, 91%, 60%, 0.1), hsla(188, 95%, 45%, 0.1));
}

.advantage-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 8px;
}

.advantage-content p {
  font-size: 14px;
  color: var(--muted-foreground);
  line-height: 1.7;
}

/* ---------- CTA 区域 ---------- */
.cta-section {
  padding: 80px 0;
  position: relative;
  text-align: center;
}

@media (min-width: 768px) {
  .cta-section { padding: 100px 0; }
}

.cta-section .container {
  position: relative;
  z-index: 2;
}

.cta-section h2 {
  font-size: 26px;
  margin-bottom: 14px;
  color: #ffffff;
}

@media (min-width: 768px) {
  .cta-section h2 { font-size: 36px; }
}

.cta-section p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 32px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.cta-buttons {
  display: flex;
  flex-direction: column;
  gap: 14px;
  justify-content: center;
  align-items: center;
}

@media (min-width: 640px) {
  .cta-buttons {
    flex-direction: row;
    gap: 16px;
  }
}

.cta-buttons .btn {
  width: 100%;
  max-width: 180px;
}

@media (min-width: 640px) {
  .cta-buttons .btn { width: auto; }
}

/* ---------- 页脚 ---------- */
.footer {
  background-color: var(--background);
  color: rgba(255, 255, 255, 0.8);
  padding-top: 64px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  gap: 40px;
  grid-template-columns: 1fr;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

@media (min-width: 640px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 20px;
}

.footer-logo {
  font-size: 22px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 14px;
  display: inline-block;
}

.footer-about p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
  max-width: 320px;
}

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

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.2s ease;
}

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

.footer-contact li,
.footer-hours li {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.8;
  margin-bottom: 8px;
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-icp {
  margin-top: 6px;
  font-size: 12px;
}

.footer-icp a {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  transition: color 0.2s;
}

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

.simple-footer {
  padding: 20px 0;
  text-align: center;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
  background: var(--dark);
}

.simple-footer a {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* ============================================
   内页通用 Page Header
   ============================================ */
.page-header {
  padding: 120px 0 80px;
  position: relative;
  text-align: center;
  overflow: hidden;
}

@media (min-width: 768px) {
  .page-header { padding: 140px 0 100px; }
}

.page-header .container { position: relative; z-index: 2; }

.page-header .badge {
  margin-bottom: 20px;
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.9);
  border-color: rgba(255, 255, 255, 0.2);
}

.page-header h1 {
  font-size: 32px;
  color: #ffffff;
  margin-bottom: 14px;
  line-height: 1.25;
}

@media (min-width: 768px) {
  .page-header h1 { font-size: 44px; }
}

.page-header p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

@media (min-width: 768px) {
  .page-header p { font-size: 17px; }
}

/* ============================================
   分类筛选栏
   ============================================ */
.filter-bar {
  position: sticky;
  top: 68px;
  z-index: 900;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

.filter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  align-items: center;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--foreground);
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 9999px;
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.filter-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.filter-btn.active {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
  box-shadow: 0 4px 12px -4px hsla(188, 95%, 45%, 0.5);
}

/* ============================================
   3列案例网格
   ============================================ */
.cases-grid-3 {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .cases-grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .cases-grid-3 { grid-template-columns: repeat(3, 1fr); }
}

/* 案例卡片带 hover 查看详情 */
.case-card {
  position: relative;
  overflow: hidden;
}

.case-card .case-cover-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(6px);
  border: 2px solid rgba(255, 255, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.5px;
}

.case-card .case-hover-link {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 14px 24px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s ease;
  pointer-events: none;
}

.case-card:hover .case-hover-link {
  opacity: 1;
  transform: translateY(0);
}

.case-card .case-hover-link::after {
  content: "→";
  transition: transform 0.2s ease;
}

.case-card:hover .case-hover-link::after {
  transform: translateX(3px);
}

/* 隐藏状态（筛选用） */
.case-card.hidden {
  display: none;
}

/* ============================================
   面包屑导航
   ============================================ */
.breadcrumb-bar {
  background: var(--muted-bg);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  margin-top: 68px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--muted-foreground);
}

.breadcrumb a {
  color: var(--muted-foreground);
  transition: color 0.2s ease;
}

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

.breadcrumb .sep {
  color: var(--border);
  margin: 0 2px;
}

.breadcrumb .current {
  color: var(--foreground);
  font-weight: 500;
}

/* ============================================
   案例详情封面
   ============================================ */
.detail-cover {
  position: relative;
  aspect-ratio: 21 / 9;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  overflow: hidden;
}

.detail-cover::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 50%;
  height: 140%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.detail-cover::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.5), transparent);
  pointer-events: none;
}

.detail-cover-content {
  position: absolute;
  bottom: 48px;
  left: 0;
  right: 0;
  z-index: 2;
}

.detail-cover-content .container {
  max-width: 900px;
}

.detail-cover .badge {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.3);
  margin-bottom: 16px;
  backdrop-filter: blur(8px);
}

.detail-cover h1 {
  font-size: 28px;
  color: #ffffff;
  margin-bottom: 12px;
  line-height: 1.3;
}

@media (min-width: 768px) {
  .detail-cover h1 { font-size: 40px; }
}

.detail-cover p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 640px;
  line-height: 1.7;
}

@media (min-width: 768px) {
  .detail-cover p { font-size: 16px; }
}

/* ============================================
   详情内容卡片 3列
   ============================================ */
.detail-content-cards {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
  margin-bottom: 0;
}

@media (min-width: 768px) {
  .detail-content-cards { grid-template-columns: repeat(3, 1fr); }
}

.detail-content-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  transition: all 0.3s ease;
}

.detail-content-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.detail-content-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 22px;
  font-weight: 700;
  color: #ffffff;
}

.detail-content-icon.icon-blue {
  background: linear-gradient(135deg, var(--primary), hsl(217, 91%, 50%));
  box-shadow: 0 6px 16px -4px hsla(217, 91%, 60%, 0.5);
}

.detail-content-icon.icon-cyan {
  background: linear-gradient(135deg, var(--accent), hsl(188, 95%, 38%));
  box-shadow: 0 6px 16px -4px hsla(188, 95%, 45%, 0.5);
}

.detail-content-icon.icon-orange {
  background: linear-gradient(135deg, hsl(25, 95%, 55%), hsl(20, 90%, 48%));
  box-shadow: 0 6px 16px -4px hsla(25, 95%, 55%, 0.5);
}

.detail-content-card h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 14px;
}

.detail-content-card ul {
  margin: 0;
  padding: 0;
}

.detail-content-card li {
  font-size: 14px;
  color: var(--muted-foreground);
  line-height: 1.75;
  padding: 4px 0 4px 18px;
  position: relative;
  list-style: none;
}

.detail-content-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

/* ============================================
   项目亮点 2x2 网格
   ============================================ */
.highlights-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .highlights-grid { grid-template-columns: repeat(2, 1fr); }
}

.highlight-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: all 0.3s ease;
}

.highlight-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.highlight-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

.highlight-card:nth-child(2) .highlight-icon {
  background: linear-gradient(135deg, var(--accent), hsl(188, 95%, 38%));
}

.highlight-card:nth-child(3) .highlight-icon {
  background: linear-gradient(135deg, hsl(25, 95%, 55%), hsl(20, 90%, 48%));
}

.highlight-card:nth-child(4) .highlight-icon {
  background: linear-gradient(135deg, hsl(262, 83%, 65%), hsl(262, 75%, 55%));
}

.highlight-text h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 8px;
}

.highlight-text p {
  font-size: 14px;
  color: var(--muted-foreground);
  line-height: 1.7;
}

/* ============================================
   相关案例 section
   ============================================ */
.related-cases-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 40px;
}

@media (min-width: 768px) {
  .related-cases-header {
    flex-direction: row;
    align-items: flex-end;
  }
}

.related-cases-header h2 {
  font-size: 26px;
  color: var(--foreground);
  margin: 0;
}

@media (min-width: 768px) {
  .related-cases-header h2 { font-size: 30px; }
}

.view-all-cases {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  transition: gap 0.2s ease;
  white-space: nowrap;
}

.view-all-cases:hover { gap: 10px; }

.view-all-cases::after { content: "→"; }

/* 返回按钮 */
.back-button-wrap {
  text-align: center;
  margin-top: 48px;
}

.btn-outline-primary {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

.btn-outline-primary:hover {
  background: var(--primary);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px -4px hsla(217, 91%, 60%, 0.4);
}

/* ============================================
   内页公共样式
   ============================================ */

/* ---------- 页面头部 ---------- */
.page-header {
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
  text-align: center;
}

@media (min-width: 768px) {
  .page-header { padding: 160px 0 100px; }
}

.page-header .container {
  position: relative;
  z-index: 2;
}

.page-header .badge {
  margin-bottom: 20px;
}

.page-header h1 {
  font-size: 32px;
  color: #ffffff;
  margin-bottom: 14px;
}

@media (min-width: 640px) {
  .page-header h1 { font-size: 40px; }
}

@media (min-width: 768px) {
  .page-header h1 { font-size: 48px; }
}

.page-header p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

@media (min-width: 768px) {
  .page-header p { font-size: 17px; }
}

/* ---------- 表单样式 ---------- */
.form-card {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  box-shadow: var(--shadow-md);
}

@media (min-width: 768px) {
  .form-card { padding: 40px 36px; }
}

.form-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--foreground);
  margin-bottom: 8px;
}

.form-card .form-subtitle {
  font-size: 14px;
  color: var(--muted-foreground);
  margin-bottom: 24px;
  line-height: 1.6;
}

.form-notice {
  background: hsla(188, 95%, 45%, 0.08);
  border: 1px solid hsla(188, 95%, 45%, 0.2);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 13px;
  color: hsl(189, 94%, 35%);
  margin-bottom: 24px;
  line-height: 1.6;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--foreground);
  margin-bottom: 8px;
}

.form-group label .required {
  color: hsl(0, 84%, 60%);
  margin-left: 2px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  color: var(--foreground);
  background-color: #ffffff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px hsla(217, 91%, 60%, 0.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8.5L1.5 4h9L6 8.5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
}

.form-submit-row {
  margin-top: 28px;
}

.form-submit-row .btn {
  width: 100%;
}

@media (min-width: 640px) {
  .form-submit-row .btn { width: auto; min-width: 180px; }
}

.form-footer-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--muted-foreground);
  text-align: center;
}

.form-footer-note a {
  color: var(--primary);
  font-weight: 500;
}

.form-row {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .form-row { grid-template-columns: 1fr 1fr; }
}

/* ---------- 联系信息卡片 ---------- */
.contact-info-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .contact-info-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .contact-info-grid { grid-template-columns: repeat(4, 1fr); }
}

.contact-info-card {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 28px 24px;
  text-align: center;
  transition: all 0.3s ease;
}

.contact-info-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.contact-info-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, hsla(217, 91%, 60%, 0.12), hsla(188, 95%, 45%, 0.12));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.contact-info-card h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 8px;
}

.contact-info-card p,
.contact-info-card a {
  font-size: 14px;
  color: var(--muted-foreground);
  line-height: 1.7;
  word-break: break-all;
}

.contact-info-card a:hover {
  color: var(--primary);
}

/* ---------- 左右分栏布局 ---------- */
.split-section {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
}

@media (min-width: 1024px) {
  .split-section.split-2-1 { grid-template-columns: 2fr 1fr; }
  .split-section.split-3-2 { grid-template-columns: 3fr 2fr; }
}

/* ---------- 堆叠卡片 ---------- */
.stacked-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.side-card {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.side-card h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 8px;
}

.side-card .side-card-desc {
  font-size: 13px;
  color: var(--muted-foreground);
  margin-bottom: 16px;
  line-height: 1.6;
}

.side-card .side-card-list {
  text-align: left;
}

.side-card .side-card-list li {
  font-size: 14px;
  color: var(--muted-foreground);
  padding: 6px 0;
  line-height: 1.6;
}

.side-card .side-card-list a:hover {
  color: var(--primary);
}

/* ---------- 二维码占位 ---------- */
.qr-placeholder {
  width: 140px;
  height: 140px;
  margin: 0 auto 16px;
  padding: 10px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.qr-grid {
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  grid-template-rows: repeat(10, 1fr);
  gap: 1px;
  background-color: #ffffff;
}

.qr-cell {
  background-color: #ffffff;
  border-radius: 1px;
}

.qr-cell.black {
  background-color: var(--foreground);
}

.qr-cell.corner {
  background-color: var(--foreground);
  position: relative;
}

.qr-hint {
  font-size: 13px;
  color: var(--muted-foreground);
  margin-top: 4px;
}

.scan-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  padding: 8px 18px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #ffffff;
  border-radius: 9999px;
  font-size: 13px;
  font-weight: 500;
}

.or-divider {
  text-align: center;
  margin: 16px 0;
  font-size: 13px;
  color: var(--muted-foreground);
  position: relative;
}

.or-divider::before,
.or-divider::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 30%;
  height: 1px;
  background-color: var(--border);
}

.or-divider::before { left: 0; }
.or-divider::after { right: 0; }

.phone-link-card {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
}

.phone-link-card:hover {
  color: var(--primary-dark);
}

/* ---------- 交通指引 / 地图占位 ---------- */
.map-section {
  display: grid;
  gap: 32px;
  grid-template-columns: 1fr;
  align-items: center;
}

@media (min-width: 768px) {
  .map-section { grid-template-columns: 1fr 1fr; gap: 48px; }
}

.map-placeholder {
  position: relative;
  height: 320px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg,
    hsla(217, 91%, 60%, 0.08) 0%,
    hsla(188, 95%, 45%, 0.08) 50%,
    hsla(142, 71%, 45%, 0.08) 100%);
  overflow: hidden;
  border: 1px solid var(--border);
}

.map-placeholder::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99, 102, 241, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.08) 1px, transparent 1px);
  background-size: 32px 32px;
}

.map-placeholder::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -60%);
  width: 60px;
  height: 60px;
  background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
  border-radius: 50%;
  opacity: 0.4;
}

.map-pin {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -80%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.map-pin-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  box-shadow: 0 6px 20px -4px hsla(217, 91%, 60%, 0.5);
  position: relative;
}

.map-pin-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -70%);
  width: 14px;
  height: 14px;
  background: #ffffff;
  border-radius: 50%;
}

.map-label {
  background: #ffffff;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  font-size: 13px;
  font-weight: 500;
  color: var(--foreground);
  white-space: nowrap;
}

.transport-info h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 20px;
}

.transport-list li {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.transport-list li:last-child {
  border-bottom: none;
}

.transport-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, hsla(217, 91%, 60%, 0.12), hsla(188, 95%, 45%, 0.12));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.transport-content h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 4px;
}

.transport-content p {
  font-size: 14px;
  color: var(--muted-foreground);
  line-height: 1.6;
}

/* ---------- FAQ 手风琴 ---------- */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.faq-item.active {
  box-shadow: var(--shadow-md);
  border-color: hsla(217, 91%, 60%, 0.3);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  font-size: 15px;
  font-weight: 600;
  color: var(--foreground);
  background: none;
  cursor: pointer;
  transition: color 0.2s ease;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: hsla(217, 91%, 60%, 0.1);
  position: relative;
  transition: transform 0.3s ease, background 0.3s ease;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background-color: var(--primary);
  border-radius: 1px;
  transform: translate(-50%, -50%);
  transition: transform 0.3s ease;
}

.faq-icon::before {
  width: 10px;
  height: 2px;
}

.faq-icon::after {
  width: 2px;
  height: 10px;
}

.faq-item.active .faq-icon {
  background: var(--primary);
}

.faq-item.active .faq-icon::before,
.faq-item.active .faq-icon::after {
  background-color: #ffffff;
}

.faq-item.active .faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--muted-foreground);
  line-height: 1.8;
}

/* ---------- 404 页面 ---------- */
.error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  background: linear-gradient(135deg, var(--background) 0%, var(--background-light) 100%);
  position: relative;
  overflow: hidden;
}

.error-page::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

.error-page::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 500px;
  background: radial-gradient(
    ellipse at center,
    hsla(217, 91%, 60%, 0.15) 0%,
    hsla(188, 95%, 45%, 0.08) 40%,
    transparent 70%
  );
  pointer-events: none;
}

.error-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 500px;
}

.error-code {
  font-size: 80px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

@media (min-width: 640px) {
  .error-code { font-size: 100px; }
}

.error-content h1 {
  font-size: 26px;
  color: #ffffff;
  margin-bottom: 12px;
}

@media (min-width: 640px) {
  .error-content h1 { font-size: 32px; }
}

.error-content p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 36px;
  line-height: 1.7;
}

.error-actions {
  display: flex;
  flex-direction: column;
  gap: 14px;
  justify-content: center;
  align-items: center;
}

@media (min-width: 640px) {
  .error-actions {
    flex-direction: row;
  }
}

.error-actions .btn {
  width: 100%;
  max-width: 180px;
}

@media (min-width: 640px) {
  .error-actions .btn { width: auto; }
}

.error-back-link {
  margin-top: 24px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

.error-back-link a {
  color: var(--accent);
  font-weight: 500;
}

.error-back-link a:hover {
  color: #ffffff;
}

/* ---------- Page Header（内页头部） ---------- */
.page-header {
  padding: 120px 0 80px;
  position: relative;
  text-align: center;
  color: #ffffff;
}

@media (min-width: 768px) {
  .page-header { padding: 140px 0 100px; }
}

.page-header .container {
  position: relative;
  z-index: 2;
}

.page-header-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 9999px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.page-header-badge::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.page-header h1 {
  font-size: 32px;
  margin-bottom: 16px;
  color: #ffffff;
}

@media (min-width: 768px) {
  .page-header h1 { font-size: 48px; }
}

.page-header p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

@media (min-width: 768px) {
  .page-header p { font-size: 17px; }
}

/* ---------- 公司简介 About Intro ---------- */
.about-intro-grid {
  display: grid;
  gap: 48px;
  grid-template-columns: 1fr;
  align-items: center;
}

@media (min-width: 1024px) {
  .about-intro-grid {
    grid-template-columns: 1.1fr 1fr;
    gap: 64px;
  }
}

.about-intro-text .eyebrow {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 12px;
}

.about-intro-text h2 {
  font-size: 28px;
  margin-bottom: 24px;
  color: var(--foreground);
  line-height: 1.3;
}

@media (min-width: 768px) {
  .about-intro-text h2 { font-size: 36px; }
}

.about-intro-text p {
  font-size: 15px;
  color: var(--muted-foreground);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-intro-text p:last-child { margin-bottom: 0; }

.about-intro-visual {
  position: relative;
  min-height: 380px;
}

.about-visual-block {
  width: 100%;
  height: 340px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  position: relative;
  overflow: hidden;
}

.about-visual-block::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}

.about-visual-block::after {
  content: "";
  position: absolute;
  bottom: -40px;
  left: -30px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}

.about-float-card {
  position: absolute;
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  box-shadow: var(--shadow-xl);
  min-width: 160px;
}

.about-float-card .float-number {
  font-size: 28px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
  margin-bottom: 4px;
}

.about-float-card .float-label {
  font-size: 13px;
  color: var(--muted-foreground);
  font-weight: 500;
}

.about-float-card.top-left {
  top: 24px;
  left: -12px;
}

.about-float-card.bottom-right {
  bottom: 24px;
  right: -12px;
}

@media (min-width: 640px) {
  .about-float-card.top-left { left: 0; }
  .about-float-card.bottom-right { right: 0; }
}

/* ---------- 发展历程时间线 Timeline ---------- */
.timeline {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
  padding: 0;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}

@media (min-width: 768px) {
  .timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }
}

.timeline-item {
  position: relative;
  padding-left: 56px;
  padding-bottom: 36px;
}

.timeline-item:last-child { padding-bottom: 0; }

@media (min-width: 768px) {
  .timeline-item {
    width: 50%;
    padding-left: 0;
  }
  .timeline-item:nth-child(odd) {
    padding-right: 48px;
    text-align: right;
  }
  .timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-left: 48px;
  }
}

.timeline-dot {
  position: absolute;
  left: 12px;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #ffffff;
  border: 3px solid var(--primary);
  box-shadow: 0 0 0 4px hsla(217, 91%, 60%, 0.15);
  z-index: 2;
}

@media (min-width: 768px) {
  .timeline-item:nth-child(odd) .timeline-dot {
    left: auto;
    right: -9px;
  }
  .timeline-item:nth-child(even) .timeline-dot {
    left: -9px;
  }
}

.timeline-year {
  display: inline-block;
  font-size: 20px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}

.timeline-content {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

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

.timeline-content h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 6px;
}

.timeline-content p {
  font-size: 14px;
  color: var(--muted-foreground);
  line-height: 1.7;
}

/* ---------- 团队与资质数据卡片 ---------- */
.team-stats-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(2, 1fr);
  max-width: 820px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .team-stats-grid { gap: 24px; }
}

.team-stat-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s ease;
}

.team-stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.team-stat-number {
  font-size: 36px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
  line-height: 1.1;
}

@media (min-width: 768px) {
  .team-stat-number { font-size: 44px; }
}

.team-stat-label {
  font-size: 14px;
  color: var(--muted-foreground);
  font-weight: 500;
}

/* ---------- 服务详情展开卡片（Services 页） ---------- */
.service-expand-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .service-expand-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .service-expand-grid { grid-template-columns: repeat(3, 1fr); }
}

.service-expand-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.service-expand-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.service-expand-card.expanded {
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.service-expand-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}

.service-expand-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

.service-expand-icon.primary {
  background: linear-gradient(135deg, var(--primary), hsl(217, 91%, 50%));
  box-shadow: 0 4px 14px -4px hsla(217, 91%, 60%, 0.5);
}

.service-expand-icon.accent {
  background: linear-gradient(135deg, var(--accent), hsl(188, 95%, 38%));
  box-shadow: 0 4px 14px -4px hsla(188, 95%, 45%, 0.5);
}

.service-expand-icon.success {
  background: linear-gradient(135deg, var(--success), hsl(142, 71%, 38%));
  box-shadow: 0 4px 14px -4px hsla(142, 71%, 45%, 0.5);
}

.service-expand-icon.orange {
  background: linear-gradient(135deg, hsl(25, 95%, 55%), hsl(20, 90%, 48%));
  box-shadow: 0 4px 14px -4px hsla(25, 95%, 55%, 0.5);
}

.service-expand-icon.purple {
  background: linear-gradient(135deg, hsl(262, 83%, 65%), hsl(262, 75%, 55%));
  box-shadow: 0 4px 14px -4px hsla(262, 83%, 65%, 0.5);
}

.service-expand-icon.pink {
  background: linear-gradient(135deg, hsl(330, 81%, 65%), hsl(330, 75%, 55%));
  box-shadow: 0 4px 14px -4px hsla(330, 81%, 65%, 0.5);
}

.service-expand-info h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 6px;
}

.service-expand-info p {
  font-size: 13px;
  color: var(--muted-foreground);
  line-height: 1.6;
}

.service-expand-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-top: auto;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  transition: color 0.2s ease;
}

.service-expand-toggle:hover { color: var(--primary-dark); }

.service-expand-toggle .toggle-icon {
  display: inline-block;
  transition: transform 0.3s ease;
  font-size: 12px;
}

.service-expand-card.expanded .service-expand-toggle .toggle-icon {
  transform: rotate(180deg);
}

.service-expand-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.service-expand-card.expanded .service-expand-body {
  max-height: 500px;
}

.service-expand-body-inner {
  padding-top: 20px;
  margin-top: 16px;
  border-top: 1px solid var(--border);
}

.service-detail-list {
  margin-bottom: 20px;
}

.service-detail-list li {
  font-size: 13px;
  color: var(--muted-foreground);
  padding: 5px 0 5px 20px;
  position: relative;
}

.service-detail-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 5px;
  color: var(--success);
  font-weight: 700;
  font-size: 12px;
}

.service-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #ffffff;
  transition: all 0.25s ease;
}

.service-cta-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px -4px hsla(217, 91%, 60%, 0.5);
}

/* ---------- 服务流程 Service Process ---------- */
.service-process {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .service-process { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .service-process { grid-template-columns: repeat(4, 1fr); }
}

.process-step {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px 24px;
  text-align: center;
  position: relative;
  transition: all 0.3s ease;
}

.process-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.process-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #ffffff;
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 4px 14px -4px hsla(217, 91%, 60%, 0.5);
}

.process-step h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--foreground);
  margin-bottom: 8px;
}

.process-step p {
  font-size: 14px;
  color: var(--muted-foreground);
  line-height: 1.7;
}

/* ---------- FAQ 手风琴 ---------- */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item.active {
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--foreground);
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  transition: color 0.2s ease;
}

.faq-question:hover { color: var(--primary); }

.faq-item.active .faq-question { color: var(--primary); }

.faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--muted-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--muted-foreground);
  transition: all 0.3s ease;
}

.faq-item.active .faq-icon {
  background: var(--primary);
  color: #ffffff;
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--muted-foreground);
  line-height: 1.8;
}

/* ---------- 响应式间距辅助 ---------- */
@media (max-width: 639px) {
  .section { padding: 64px 0; }
  .section-header { margin-bottom: 40px; }
  .section-header h2 { font-size: 24px; }
  .page-header { padding: 100px 0 60px; }
  .page-header h1 { font-size: 28px; }
  .about-intro-text h2 { font-size: 24px; }
  .team-stat-number { font-size: 28px; }
  .team-stat-card { padding: 24px 16px; }
}
  .detail-cover h1 { font-size: 24px; }
  .detail-content-card { padding: 24px 20px; }
  .highlight-card { padding: 24px 20px; }
}