/* ========================================
   西安创超信息科技有限公司 官网样式
   风格：现代、简洁、科技感商务
   ======================================== */

/* --- CSS Variables --- */
:root {
  --color-primary: #0A84FF;
  --color-primary-dark: #0066CC;
  --color-primary-light: #E8F2FF;
  --color-accent: #00D4AA;
  --color-accent-dark: #00B892;
  --color-dark: #0B1120;
  --color-dark-2: #131B2E;
  --color-dark-3: #1A2540;
  --color-gray-900: #111827;
  --color-gray-800: #1F2937;
  --color-gray-700: #374151;
  --color-gray-600: #4B5563;
  --color-gray-500: #6B7280;
  --color-gray-400: #9CA3AF;
  --color-gray-300: #D1D5DB;
  --color-gray-200: #E5E7EB;
  --color-gray-100: #F3F4F6;
  --color-gray-50: #F9FAFB;
  --color-white: #FFFFFF;

  --font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Consolas', 'Courier New', monospace;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

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

  --transition: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-gray-700);
  background-color: var(--color-white);
  overflow-x: hidden;
}

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

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

/* --- Section Header --- */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 6px 18px;
  border-radius: 20px;
  margin-bottom: 20px;
}

.section-header--light .section-tag {
  color: var(--color-accent);
  background: rgba(0, 212, 170, 0.15);
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-header--light .section-title {
  color: var(--color-white);
}

.section-line {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 2px;
  margin: 16px auto 0;
}

.section-subtitle {
  font-size: 17px;
  color: var(--color-gray-500);
  margin-top: 16px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  font-family: var(--font-family);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(10, 132, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(10, 132, 255, 0.45);
  color: var(--color-white);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid rgba(10, 132, 255, 0.4);
}

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

/* ========================================
   导航栏
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
  padding: 10px 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

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

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

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-dark);
  transition: color var(--transition);
}

.navbar.scrolled .logo-text {
  color: var(--color-dark);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-gray-600);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav-links a:hover {
  color: var(--color-primary);
  background: rgba(10, 132, 255, 0.06);
}

/* 导航 active 状态 - 默认状态 */
.nav-links a.active {
  color: var(--color-primary);
  background: rgba(10, 132, 255, 0.08);
  position: relative;
  font-weight: 600;
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

/* 导航 active 状态 - 滚动后白底栏 */
.navbar.scrolled .nav-links a {
  color: var(--color-gray-600);
}

.navbar.scrolled .nav-links a:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.navbar.scrolled .nav-links a.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
  font-weight: 600;
}

.navbar.scrolled .nav-links a.active::after {
  background: var(--color-primary);
}

.nav-cta {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)) !important;
  color: var(--color-white) !important;
  padding: 8px 20px !important;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(10, 132, 255, 0.3);
}

/* 汉堡菜单 */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  border-radius: 1px;
  transition: all var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ========================================
   Hero 区
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #f0f4f8 0%, #e4ecf5 50%, #f5f7fa 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(10, 132, 255, 0.07) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 170, 0.05) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(10,132,255,0.04)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  background-size: 100px 100px;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding-top: 80px;
}

.hero-logo-mark {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin-bottom: 20px;
}

.hero-logo-mark svg {
  filter: drop-shadow(0 4px 16px rgba(10, 132, 255, 0.15));
  animation: logoFloat 4s ease-in-out infinite alternate;
}

@keyframes logoFloat {
  0%   { transform: translateY(0) rotate(0deg); }
  100% { transform: translateY(-6px) rotate(3deg); }
}

.hero-badge {
  display: inline-block;
  font-size: 14px;
  color: var(--color-primary);
  background: rgba(10, 132, 255, 0.08);
  border: 1px solid rgba(10, 132, 255, 0.15);
  padding: 6px 20px;
  border-radius: 20px;
  margin-bottom: 24px;
  letter-spacing: 1px;
}

.hero-title {
  font-size: 42px;
  font-weight: 800;
  color: var(--color-dark);
  line-height: 1.2;
  margin-bottom: 16px;
}

.hero-slogan {
  font-size: 28px;
  font-weight: 300;
  color: var(--color-primary);
  margin-bottom: 16px;
  letter-spacing: 8px;
}

.hero-subtitle {
  font-size: 16px;
  color: var(--color-gray-600);
  line-height: 1.8;
  margin-bottom: 36px;
}

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

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-img-wrapper {
  width: 100%;
  max-width: 480px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(10, 132, 255, 0.1);
}

.hero-img-wrapper img {
  width: 100%;
  height: auto;
  display: block;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(10, 132, 255, 0.4);
  font-size: 12px;
  z-index: 1;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid rgba(10, 132, 255, 0.25);
  border-bottom: 2px solid rgba(10, 132, 255, 0.25);
  transform: rotate(45deg);
  animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
  0%, 20%, 50%, 80%, 100% { transform: rotate(45deg) translateY(0); }
  40% { transform: rotate(45deg) translateY(6px); }
  60% { transform: rotate(45deg) translateY(3px); }
}

/* ========================================
   品牌寄语
   ======================================== */
.brand-philosophy {
  background: linear-gradient(135deg, #f8fafc 0%, #edf2f7 100%);
  padding: 80px 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.philosophy-inner {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.philosophy-decor {
  margin-bottom: 16px;
}

.decor-quote {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-primary);
  opacity: 0.15;
  line-height: 1;
}

.philosophy-theme {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 24px;
  letter-spacing: 4px;
}

.philosophy-text {
  font-size: 17px;
  line-height: 2;
  color: var(--color-gray-600);
}

/* ========================================
   企业简介
   ======================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.about-img img {
  width: 100%;
  height: auto;
}

.about-desc {
  font-size: 16px;
  line-height: 2;
  color: var(--color-gray-600);
  margin-bottom: 28px;
}

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 28px;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--color-gray-50);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
}

.highlight-icon {
  font-size: 20px;
}

.highlight-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-dark);
}

.about-values h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 12px;
}

.value-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.value-tag {
  padding: 6px 18px;
  background: linear-gradient(135deg, var(--color-primary-light), rgba(0, 212, 170, 0.08));
  color: var(--color-primary-dark);
  font-size: 14px;
  font-weight: 500;
  border-radius: 20px;
  border: 1px solid rgba(10, 132, 255, 0.15);
}

/* ========================================
   核心业务
   ======================================== */
.business {
  background: var(--color-gray-50);
}

.business-intro {
  text-align: center;
  max-width: 900px;
  margin: -40px auto 50px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-gray-600);
}

.business-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 30px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition);
}

.business-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.business-card--featured {
  border: 2px solid var(--color-primary);
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-primary-light) 100%);
}

.business-card-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 20px;
}

.business-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-sm);
  color: var(--color-white);
  font-size: 20px;
  font-weight: 800;
  flex-shrink: 0;
}

.business-card-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 4px;
}

.business-card-subtitle {
  font-size: 14px;
  color: var(--color-gray-500);
}

.business-card-desc {
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-gray-600);
  margin-bottom: 24px;
}

.business-card-note {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-primary-dark);
  background: rgba(10, 132, 255, 0.06);
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
  margin-top: 24px;
}

.pain-points {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.pain-point {
  padding: 20px;
  background: var(--color-gray-50);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition);
}

.pain-point:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.pain-icon {
  font-size: 28px;
  margin-bottom: 10px;
}

.pain-point h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.pain-point p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-gray-600);
}

.business-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.stat-item {
  text-align: center;
  padding: 20px;
  background: var(--color-gray-50);
  border-radius: var(--radius-md);
}

.stat-value {
  display: block;
  font-size: 32px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
}

.stat-unit {
  font-size: 14px;
  font-weight: 600;
}

.stat-label {
  display: block;
  font-size: 13px;
  color: var(--color-gray-500);
  margin-top: 6px;
}

.custom-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.custom-tag {
  padding: 6px 16px;
  background: var(--color-gray-100);
  color: var(--color-gray-700);
  font-size: 13px;
  font-weight: 500;
  border-radius: 20px;
  border: 1px solid var(--color-gray-200);
}

.business-card-images {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.business-card-images img {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition);
}

.business-card-images img:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
}

/* ========================================
   技术实力
   ======================================== */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 80px;
}

.tech-item {
  padding: 28px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-gray-200);
  text-align: center;
  transition: all var(--transition);
}

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

.tech-icon {
  font-size: 36px;
  margin-bottom: 16px;
}

.tech-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 10px;
}

.tech-item p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-gray-500);
}

.team-section {
  background: var(--color-gray-50);
  border-radius: var(--radius-lg);
  padding: 50px;
}

.team-heading {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-dark);
  text-align: center;
  margin-bottom: 12px;
}

.team-intro {
  text-align: center;
  font-size: 15px;
  color: var(--color-gray-500);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-bottom: 30px;
}

.team-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition);
}

.team-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.team-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-white);
  font-size: 22px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
}

.team-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 4px;
}

.team-role {
  display: block;
  font-size: 12px;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 10px;
}

.team-card p {
  font-size: 12px;
  line-height: 1.6;
  color: var(--color-gray-500);
  text-align: left;
}

.team-images {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.team-images img {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-gray-200);
}

/* ========================================
   行业案例
   ======================================== */
.cases-intro-bar {
  text-align: center;
  margin-bottom: 40px;
  padding: 16px 24px;
  background: linear-gradient(135deg, var(--color-primary-light), rgba(0, 212, 170, 0.06));
  border-radius: var(--radius-sm);
  border: 1px solid rgba(10, 132, 255, 0.1);
}

.cases-intro-bar p {
  font-size: 15px;
  color: var(--color-gray-600);
}

.case-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition);
}

.case-card:hover {
  box-shadow: var(--shadow-lg);
}

.case-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.case-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-dark), var(--color-dark-3));
  border-radius: var(--radius-sm);
  color: var(--color-accent);
  font-size: 18px;
  font-weight: 800;
  flex-shrink: 0;
}

.case-header h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-dark);
}

.case-subtitle {
  font-size: 14px;
  color: var(--color-gray-500);
}

.case-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: start;
}

.case-info p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-gray-600);
  margin-bottom: 10px;
}

.case-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.case-images img {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition);
}

.case-images img:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
}

.trust-section {
  text-align: center;
  margin-top: 60px;
  padding: 40px;
  background: var(--color-gray-50);
  border-radius: var(--radius-lg);
}

.trust-heading {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 16px;
}

.trust-text {
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-gray-600);
  max-width: 800px;
  margin: 0 auto 24px;
}

.trust-clients {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.client-tag {
  padding: 8px 20px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-gray-700);
}

.case-showcase {
  margin-top: 50px;
  text-align: center;
}

.showcase-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 36px;
}

.wordcloud {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 16px 20px;
  padding: 40px 20px;
  max-width: 960px;
  margin: 0 auto;
  position: relative;
}

.wc-item {
  display: inline-block;
  font-size: calc(14px * var(--size, 1));
  font-weight: 600;
  color: var(--color);
  padding: 8px 18px;
  border-radius: 28px;
  background: var(--color-white);
  border: 1.5px solid var(--color-gray-200);
  cursor: default;
  white-space: nowrap;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  opacity: 0;
  animation: wcFadeIn 0.5s ease forwards;
  animation-delay: var(--delay, 0s);
}

.wc-item:hover {
  transform: scale(1.18) translateY(-4px);
  border-color: var(--color);
  background: color-mix(in srgb, var(--color) 8%, var(--color-white));
  box-shadow: 0 8px 24px color-mix(in srgb, var(--color) 25%, transparent);
  z-index: 2;
}

/* 持续浮动动画 - 不同延迟错开 */
.wc-item {
  animation: wcFadeIn 0.5s ease forwards, wcFloat 4s ease-in-out infinite alternate;
  animation-delay: var(--delay, 0s), calc(var(--delay, 0s) + 0.8s);
}

@keyframes wcFadeIn {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.85);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes wcFloat {
  0%   { transform: translateY(0); }
  100% { transform: translateY(-6px); }
}

.wc-item:hover {
  animation: none;
  opacity: 1;
}

/* ========================================
   服务流程
   ======================================== */
.process {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-2) 100%);
}

.process-timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.process-step {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 28px;
  text-align: center;
  transition: all var(--transition);
}

.process-step:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--color-primary);
  transform: translateY(-3px);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 50%;
  color: var(--color-white);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}

.step-content h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 8px;
}

.step-content p {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
}

/* ========================================
   核心优势
   ======================================== */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.adv-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 32px;
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition);
}

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

.adv-card--highlight {
  background: linear-gradient(135deg, #f0f7ff 0%, #e8f4fd 50%, #f0faf6 100%);
  border: 2px solid var(--color-primary);
  grid-column: 1 / -1;
  position: relative;
  overflow: hidden;
}

.adv-card--highlight::before {
  content: '';
  position: absolute;
  top: -30px;
  right: -30px;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(10, 132, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.adv-card--highlight::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: -20px;
  width: 80px;
  height: 80px;
  background: radial-gradient(circle, rgba(0, 212, 170, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.adv-card--highlight h3 {
  color: var(--color-primary-dark);
}

.adv-card--highlight p {
  color: var(--color-gray-700);
}

.adv-card--highlight .adv-icon {
  font-size: 32px;
}

.adv-icon {
  font-size: 32px;
  margin-bottom: 16px;
}

.adv-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 10px;
}

.adv-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-gray-500);
}

/* ========================================
   企业愿景
   ======================================== */
.vision {
  background: var(--color-gray-50);
}

.vision-inner {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: 40px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border-top: 4px solid var(--color-primary);
}

.vision-slogan {
  font-size: 36px;
  font-weight: 300;
  color: var(--color-primary);
  letter-spacing: 12px;
  margin-bottom: 20px;
}

.vision-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 20px;
}

.vision-text {
  font-size: 16px;
  line-height: 2;
  color: var(--color-gray-600);
  margin-bottom: 28px;
}

.vision-motto {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.motto-item {
  padding: 8px 20px;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-size: 15px;
  font-weight: 600;
  border-radius: 20px;
}

.motto-divider {
  color: var(--color-gray-300);
  font-size: 20px;
  font-weight: 300;
}

/* ========================================
   联系我们
   ======================================== */
.contact {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-2) 100%);
}

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

.contact-info h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 30px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-icon {
  font-size: 24px;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-label {
  display: block;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.contact-item p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.6;
}

.contact-item a {
  color: var(--color-accent);
}

.contact-item a:hover {
  color: var(--color-white);
}

.contact-qr {
  display: flex;
  justify-content: center;
}

.qr-placeholder {
  width: 220px;
  height: 260px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
}

.qr-placeholder p {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.qr-id {
  font-size: 13px;
  color: var(--color-gray-500);
  font-weight: 400;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: var(--color-dark);
  padding: 40px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-inner {
  text-align: center;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand .logo-text {
  color: var(--color-white);
}

.footer-tagline {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 20px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 24px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition);
}

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

.footer-copy {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.25);
}

/* ========================================
   返回顶部
   ======================================== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-white);
  border: none;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  box-shadow: 0 4px 12px rgba(10, 132, 255, 0.3);
  z-index: 999;
}

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

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(10, 132, 255, 0.4);
}

/* ========================================
   响应式 - 平板 (768px - 1024px)
   ======================================== */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }

  .hero-title {
    font-size: 34px;
  }

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

  .hero-img-wrapper {
    max-width: 400px;
    margin: 0 auto;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .team-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .team-images {
    grid-template-columns: repeat(3, 1fr);
  }

  .pain-points {
    grid-template-columns: 1fr 1fr;
  }

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

  .case-body {
    grid-template-columns: 1fr;
  }

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

  .wordcloud {
    gap: 12px 14px;
    padding: 24px 10px;
  }

  .wc-item {
    font-size: calc(12px * var(--size, 1));
    padding: 6px 14px;
  }

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

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

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

  .contact-item {
    justify-content: center;
  }
}

/* ========================================
   响应式 - 手机 (768px 以下)
   ======================================== */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 26px;
  }

  .section-header {
    margin-bottom: 40px;
  }

  /* 导航栏 */
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    background: var(--color-white);
    flex-direction: column;
    padding: 80px 24px 24px;
    gap: 4px;
    box-shadow: var(--shadow-xl);
    z-index: 998;
  }

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

  .nav-links a {
    color: var(--color-gray-700);
    padding: 12px 16px;
    font-size: 15px;
    border-radius: var(--radius-sm);
  }

  .nav-links a:hover {
    background: var(--color-gray-50);
    color: var(--color-primary);
  }

  .nav-links a.active {
    color: var(--color-primary);
    background: var(--color-primary-light);
    font-weight: 600;
  }

  .nav-links a.active::after {
    display: none;
  }

  .nav-cta {
    margin-top: 10px;
    text-align: center;
  }

  /* Hero */
  .hero {
    min-height: auto;
    padding: 100px 0 60px;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-slogan {
    font-size: 22px;
    letter-spacing: 4px;
  }

  .hero-subtitle {
    font-size: 14px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 260px;
  }

  .hero-scroll-hint {
    display: none;
  }

  /* 品牌寄语 */
  .philosophy-theme {
    font-size: 24px;
    letter-spacing: 2px;
  }

  .philosophy-text {
    font-size: 15px;
  }

  /* 企业简介 */
  .about-highlights {
    grid-template-columns: 1fr;
  }

  /* 核心业务 */
  .business-card {
    padding: 24px;
  }

  .business-card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .pain-points {
    grid-template-columns: 1fr;
  }

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

  .business-card-images {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 技术实力 */
  .tech-grid {
    grid-template-columns: 1fr;
  }

  .team-section {
    padding: 30px 20px;
  }

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

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

  /* 行业案例 */
  .case-card {
    padding: 24px;
  }

  .case-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .case-images {
    grid-template-columns: 1fr;
  }

  .wordcloud {
    gap: 10px 12px;
  }

  .wc-item {
    font-size: calc(11px * var(--size, 1));
    padding: 5px 12px;
  }

  /* 服务流程 */
  .process-timeline {
    grid-template-columns: 1fr;
  }

  /* 核心优势 */
  .advantages-grid {
    grid-template-columns: 1fr;
  }

  .adv-card--highlight {
    grid-column: auto;
  }

  /* 企业愿景 */
  .vision-inner {
    padding: 30px 20px;
  }

  .vision-slogan {
    font-size: 24px;
    letter-spacing: 6px;
  }

  .vision-motto {
    gap: 8px;
  }

  .motto-item {
    padding: 6px 14px;
    font-size: 13px;
  }

  /* 联系我们 */
  .contact-grid {
    gap: 40px;
  }

  .contact-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

/* ========================================
   响应式 - 小屏手机 (480px 以下)
   ======================================== */
@media (max-width: 480px) {
  .hero-title {
    font-size: 24px;
  }

  .hero-slogan {
    font-size: 18px;
  }

  .section-title {
    font-size: 22px;
  }

  .business-stats {
    grid-template-columns: 1fr 1fr;
  }

  .stat-value {
    font-size: 24px;
  }

  .wordcloud {
    gap: 8px 10px;
    padding: 16px 6px;
  }

  .wc-item {
    font-size: calc(11px * var(--size, 1));
    padding: 4px 10px;
  }

  .business-card-images {
    grid-template-columns: 1fr;
  }

  .footer-links {
    flex-direction: column;
    gap: 12px;
  }
}

/* ========================================
   动画效果
   ======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-text {
  animation: fadeInUp 0.8s ease forwards;
}

.hero-visual {
  animation: fadeInUp 0.8s ease 0.2s forwards;
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}