/* ================================================
   云图GEO - 公司官网样式
   主色调：青绿色系（Teal），专业B2B风格
   ================================================ */

/* --- CSS 变量 --- */
:root {
  --color-primary: #009688;
  --color-primary-dark: #00796B;
  --color-primary-light: #e0f2f1;
  --color-accent: #00BFA5;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-light: #94a3b8;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-bg-dark: #0f172a;
  --color-border: #e2e8f0;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.04);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --max-width: 1200px;
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

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

ul {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- 排版 --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.25rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.15rem; }

.section-title {
  text-align: center;
  margin-bottom: 12px;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  margin-bottom: 48px;
}

/* --- 导航栏 --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: box-shadow 0.3s;
}

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

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo img.logo-img {
  height: 38px;
  width: auto;
  display: block;
}

.nav-logo .logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.nav-logo .logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transition: transform 0.3s;
}

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

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

.nav-cta {
  padding: 10px 24px;
  background: var(--color-primary);
  color: white !important;
  border-radius: var(--radius-md);
  font-weight: 600 !important;
  transition: background 0.3s, transform 0.2s !important;
}

.nav-cta:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
}

.nav-cta::after {
  display: none !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s;
}

/* --- 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(0,150,136,0.35);
}

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

.btn-outline:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
}

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

.btn-white:hover {
  background: var(--color-bg-alt);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.1rem;
}

/* --- Hero 区域 --- */
.hero {
  padding: calc(var(--nav-height) + 80px) 0 100px;
  background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-bg) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,150,136,0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(0,150,136,0.1);
  color: var(--color-primary);
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero h1 {
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.hero-stat h3 {
  font-size: 1.75rem;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.hero-stat p {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 0;
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-card {
  width: 100%;
  max-width: 480px;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 32px;
  border: 1px solid var(--color-border);
}

.hero-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.hero-card-header .icon {
  width: 44px;
  height: 44px;
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.hero-card-header h4 {
  font-size: 1rem;
}

.hero-card-header p {
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin: 0;
}

.metric-bars {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.metric-bar {
  display: flex;
  align-items: center;
  gap: 12px;
}

.metric-bar .label {
  width: 80px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  flex-shrink: 0;
}

.metric-bar .bar-track {
  flex: 1;
  height: 8px;
  background: var(--color-bg-alt);
  border-radius: 4px;
  overflow: hidden;
}

.metric-bar .bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 4px;
  animation: barGrow 1.5s ease-out forwards;
  transform-origin: left;
}

@keyframes barGrow {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.metric-bar .value {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  width: 45px;
  text-align: right;
  flex-shrink: 0;
}

.hero-card-footer {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.hero-card-footer .trend {
  color: var(--color-success);
  font-weight: 600;
}

/* --- 六大AI平台展示 --- */
.ai-platforms-section {
  background: linear-gradient(180deg, #ffffff 0%, #f2fbfa 100%);
  position: relative;
  overflow: hidden;
}

.ai-platforms-section::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 80px;
  width: 760px;
  height: 260px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(0,150,136,0.12) 0%, rgba(0,150,136,0.04) 42%, transparent 72%);
  pointer-events: none;
}

.platforms-kicker {
  width: fit-content;
  margin: 0 auto 14px;
  padding: 6px 16px;
  border: 1px solid rgba(0,150,136,0.2);
  border-radius: 999px;
  color: var(--color-primary-dark);
  background: rgba(255,255,255,0.8);
  font-size: 0.9rem;
  font-weight: 700;
}

.platform-hub {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 24px;
  align-items: center;
  margin: 0 auto 44px;
  max-width: 960px;
}

.platform-center {
  min-width: 260px;
  padding: 22px 34px;
  border-radius: 999px;
  text-align: center;
  color: white;
  background: linear-gradient(135deg, #1479ff, #005bd3);
  box-shadow: 0 18px 40px rgba(20,121,255,0.24);
}

.platform-center-label {
  display: block;
  margin-bottom: 2px;
  font-size: 0.8rem;
  opacity: 0.85;
}

.platform-center strong {
  display: block;
  font-size: 1.2rem;
  letter-spacing: 0.02em;
}

.platform-side {
  color: #0f5eb8;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.platform-side-left {
  text-align: right;
}

.platform-side-right {
  text-align: left;
}

.platform-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.platform-card {
  background: rgba(255,255,255,0.92);
  border: 1px solid rgba(226,232,240,0.9);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.platform-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0,150,136,0.42);
  box-shadow: var(--shadow-lg);
}

.platform-logo {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: white;
  font-weight: 800;
  font-size: 1.15rem;
  box-shadow: var(--shadow-md);
}

.platform-doubao { background: linear-gradient(135deg, #2563eb, #06b6d4); }
.platform-deepseek { background: linear-gradient(135deg, #4f46e5, #1d4ed8); }
.platform-tongyi { background: linear-gradient(135deg, #7c3aed, #2563eb); }
.platform-wenxin { background: linear-gradient(135deg, #0ea5e9, #0369a1); }
.platform-yuanbao { background: linear-gradient(135deg, #10b981, #059669); }
.platform-kimi { background: linear-gradient(135deg, #111827, #4b5563); }

.platform-card h3 {
  margin-bottom: 10px;
}

.platform-card p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.platform-card span {
  display: block;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
  color: var(--color-primary-dark);
  font-size: 0.88rem;
  font-weight: 700;
}

@media (max-width: 1024px) {
  .platform-hub {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .platform-side,
  .platform-side-left,
  .platform-side-right {
    text-align: center;
  }
  .platform-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .platform-grid {
    grid-template-columns: 1fr;
  }
  .platform-center {
    min-width: auto;
    width: 100%;
  }
  .platform-side {
    font-size: 1.05rem;
  }
}

/* --- Section 通用 --- */
.section {
  padding: 100px 0;
}

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

/* --- 价值主张 --- */
.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.value-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all 0.3s;
}

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

.value-card .icon {
  width: 52px;
  height: 52px;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
}

/* 线性 SVG 图标统一着色 */
.value-card .icon svg,
.service-overview-card .icon svg,
.case-card-image svg,
.hero-card-header .icon svg,
.contact-item .icon svg,
.placeholder-visual .big-icon svg,
.form-success .icon svg {
  color: var(--color-primary);
}

.value-card h3 {
  margin-bottom: 10px;
}

.value-card p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* --- 服务概览 --- */
.services-overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

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

.service-overview-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}

.service-overview-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

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

.service-overview-card .icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
}

.service-overview-card h3 {
  margin-bottom: 8px;
}

.service-overview-card p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.service-overview-card .link {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.service-overview-card .link::after {
  content: '→';
  transition: transform 0.3s;
}

.service-overview-card:hover .link::after {
  transform: translateX(4px);
}

/* --- 客户Logo墙 --- */
.client-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 48px;
}

.client-logo {
  opacity: 0.5;
  transition: opacity 0.3s;
  filter: grayscale(100%);
}

.client-logo:hover {
  opacity: 1;
  filter: grayscale(0%);
}

.client-logo .placeholder {
  width: 120px;
  height: 40px;
  background: var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--color-text-light);
  font-weight: 600;
}

/* --- CTA 区块 --- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  padding: 80px 0;
  text-align: center;
  color: white;
}

.cta-section h2 {
  color: white;
  margin-bottom: 16px;
}

.cta-section p {
  color: rgba(255,255,255,0.85);
  font-size: 1.1rem;
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- 页脚 --- */
.footer {
  background: var(--color-bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand h3 {
  color: white;
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-col h4 {
  color: white;
  font-size: 0.95rem;
  margin-bottom: 16px;
  font-weight: 600;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: 12px;
}

/* ================================================
   内页通用样式
   ================================================ */

.page-header {
  padding: calc(var(--nav-height) + 60px) 0 48px;
  background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-bg) 100%);
  text-align: center;
}

.page-header h1 {
  margin-bottom: 12px;
}

.page-header p {
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* --- 服务详情 --- */
.services-detail {
  padding: 80px 0;
}

.service-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 60px 0;
  border-bottom: 1px solid var(--color-border);
}

.service-block:last-child {
  border-bottom: none;
}

.service-block:nth-child(even) {
  direction: rtl;
}

.service-block:nth-child(even) .service-block-text {
  direction: ltr;
}

.service-block-text h2 {
  margin-bottom: 16px;
}

.service-block-text p {
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  font-size: 1.05rem;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.service-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
}

.service-feature .check {
  width: 22px;
  height: 22px;
  background: var(--color-primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.service-block-visual {
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed var(--color-border);
  direction: ltr;
}

.service-block-visual .placeholder-visual {
  text-align: center;
  color: var(--color-text-light);
}

.service-block-visual .placeholder-visual .big-icon {
  font-size: 4rem;
  display: block;
  margin-bottom: 12px;
}

.service-block-visual .placeholder-visual span {
  font-size: 0.9rem;
}

/* --- 套餐/定价 --- */
.pricing-section {
  padding: 80px 0;
  background: var(--color-bg-alt);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}

.pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: scale(1.03);
  position: relative;
}

.pricing-card.featured::before {
  content: '推荐';
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 12px;
  background: var(--color-primary);
  color: white;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
}

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

.pricing-card.featured:hover {
  transform: scale(1.03) translateY(-4px);
}

.pricing-card h3 {
  margin-bottom: 8px;
}

.pricing-card .price {
  margin: 20px 0;
}

.pricing-card .price .amount {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
}

.pricing-card .price .period {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.pricing-card .desc {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
  flex: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.pricing-features li .check-icon {
  color: var(--color-success);
  font-weight: 700;
}

.pricing-card .btn {
  width: 100%;
  justify-content: center;
}

/* --- 案例页 --- */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 24px;
}

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

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

.case-card-image {
  height: 200px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-bg-alt));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.case-card-body {
  padding: 24px;
}

.case-card-body .tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.case-card-body h3 {
  margin-bottom: 8px;
}

.case-card-body p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.case-metrics {
  display: flex;
  gap: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.case-metric .val {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
}

.case-metric .label {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* --- 博客页 --- */
.blog-list {
  padding: 60px 0 80px;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.blog-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s;
  cursor: pointer;
}

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

.blog-card-image {
  height: 200px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: white;
}

.blog-card-body {
  padding: 24px;
}

.blog-card-body .meta {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.blog-card-body h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  line-height: 1.5;
}

.blog-card-body p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card-body .read-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 12px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-primary);
}

/* --- 联系页 --- */
.contact-section {
  padding: 60px 0 80px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: start;
}

.contact-info h2 {
  margin-bottom: 16px;
}

.contact-info > p {
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.contact-item .icon {
  width: 44px;
  height: 44px;
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.contact-item p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.contact-form-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
}

.contact-form-card h3 {
  margin-bottom: 24px;
}

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

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form-group label .required {
  color: var(--color-error);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  font-family: var(--font-sans);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  transition: all 0.2s;
  color: var(--color-text);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0,150,136,0.1);
}

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

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
  border-color: var(--color-error);
}

.form-error-msg {
  color: var(--color-error);
  font-size: 0.8rem;
  margin-top: 4px;
  display: none;
}

.form-submit-row {
  margin-top: 8px;
}

.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}

.form-success .icon {
  font-size: 3rem;
  margin-bottom: 16px;
  display: block;
}

.form-success h3 {
  margin-bottom: 8px;
  color: var(--color-success);
}

.form-success p {
  color: var(--color-text-secondary);
}

/* --- 响应式设计 --- */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero p {
    max-width: 100%;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-visual {
    max-width: 480px;
    margin: 0 auto;
  }

  .services-overview-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .pricing-card.featured {
    transform: scale(1);
  }

  .pricing-card.featured:hover {
    transform: translateY(-4px);
  }

  .service-block {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }

  .service-block:nth-child(even) {
    direction: ltr;
  }

  .service-features {
    align-items: center;
  }

  .service-block-visual {
    height: 240px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 20px 24px;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .services-overview-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 24px;
  }

  .cases-grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 60px 0;
  }

  .page-header {
    padding-top: calc(var(--nav-height) + 40px);
  }
}

/* --- 动画 --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- 返回顶部 --- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 999;
  box-shadow: var(--shadow-md);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

/* --- 博客详情页 --- */
.blog-post {
  max-width: 780px;
  margin: 0 auto;
  padding: 60px 20px 80px;
}

.blog-post-header {
  text-align: center;
  margin-bottom: 48px;
}

.blog-post-category {
  display: inline-block;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.blog-post-header h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 8px;
}

.blog-post-meta {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.blog-post-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--color-text);
}

.blog-post-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 48px 0 16px;
  color: var(--color-primary-dark);
  border-left: 4px solid var(--color-primary);
  padding-left: 16px;
}

.blog-post-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 32px 0 12px;
  color: var(--color-text);
}

.blog-post-content p {
  margin-bottom: 20px;
}

.blog-post-content ul, .blog-post-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.blog-post-content li {
  margin-bottom: 8px;
}

.blog-post-content blockquote {
  border-left: 4px solid var(--color-accent);
  background: var(--color-primary-light);
  padding: 16px 24px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--color-primary-dark);
}

.blog-post-content code {
  background: var(--color-bg-alt);
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--color-primary-dark);
}

.blog-post-content strong {
  color: var(--color-primary-dark);
}

.blog-post-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
  margin-bottom: 40px;
  font-size: 0.95rem;
}

.blog-post-back:hover {
  color: var(--color-primary-dark);
}

.blog-post-related {
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
}

.blog-post-related h3 {
  text-align: center;
  font-size: 1.2rem;
  margin-bottom: 24px;
  color: var(--color-text-secondary);
}

.blog-post-related ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.blog-post-related li a {
  display: inline-block;
  padding: 8px 20px;
  background: var(--color-bg-alt);
  border-radius: 20px;
  color: var(--color-text);
  font-size: 0.9rem;
  transition: all 0.2s;
}

.blog-post-related li a:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

@media (max-width: 768px) {
  .blog-post-header h1 {
    font-size: 1.5rem;
  }
  .blog-post-content h2 {
    font-size: 1.25rem;
  }
  .blog-post {
    padding: 40px 16px 60px;
  }
}


/* --- AI友好化新增页面 --- */
.content-panel {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 32px;
}

.content-panel h2 {
  margin-bottom: 16px;
}

.content-panel p {
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.info-card,
.faq-item {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.info-card h3,
.faq-item h3 {
  margin-bottom: 16px;
}

.info-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.info-table th,
.info-table td {
  border-bottom: 1px solid var(--color-border);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}

.info-table th {
  color: var(--color-primary-dark);
  font-weight: 700;
  background: var(--color-primary-light);
  width: 28%;
}

.info-table tr:last-child th,
.info-table tr:last-child td {
  border-bottom: none;
}

.table-wrap {
  overflow-x: auto;
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.service-param-table th {
  width: auto;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.faq-item p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

@media (max-width: 768px) {
  .info-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .content-panel {
    padding: 28px 22px;
  }
}


/* --- FAQ与行业资讯扩展 --- */
.faq-group {
  margin-bottom: 40px;
}

.faq-group h2 {
  font-size: 1.35rem;
  color: var(--color-primary-dark);
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-primary-light);
}

.faq-group .faq-item {
  margin-bottom: 16px;
}

.content-channel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.channel-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.channel-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.channel-card p {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .content-channel-grid {
    grid-template-columns: 1fr;
  }
}