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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

@media (max-width: 767px) {
  html {
    scroll-padding-top: var(--nav-height-mobile);
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.71;
  color: var(--color-body);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

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

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

button {
  cursor: pointer;
}

/* ===== Design Tokens - 科技极光主题 ===== */
:root {
  /* 主色系 - 青绿科技 */
  --color-primary: #0D9488;
  --color-primary-hover: #0F766E;
  --color-primary-light: #14B8A6;
  --color-primary-dark: #115E59;
  
  /* Hero Banner 背景透明度 */
  --hero-overlay-opacity: 0.70;
  --hero-overlay-start: rgba(26, 54, 93, var(--hero-overlay-opacity));
  --hero-overlay-end: rgba(13, 148, 136, var(--hero-overlay-opacity));
  
  /* 辅助色 - 渐变层次 */
  --color-secondary: #14B8A6;
  --color-secondary-hover: #0D9488;
  
  /* 强调色 - CTA橙色 */
  --color-accent: #F97316;
  --color-accent-hover: #EA580C;
  --color-accent-light: #FB923C;
  
  /* 成功色 */
  --color-success: #10B981;
  --color-success-hover: #059669;
  
  /* 文字色系 */
  --color-title: #0F172A;
  --color-body: #475569;
  --color-muted: #94A3B8;
  
  /* 背景色系 */
  --color-bg-gray: #F1F5F9;
  --color-bg-light: #F8FAFC;
  --color-white: #FFFFFF;
  --color-border: #E2E8F0;
  --color-border-light: #E5E7EB;
  --color-border-lighter: #f0f0f0;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #1F2937;
  --color-gray-bg: #F3F4F6;
  --color-gray-bg-light: #F9FAFB;
  --color-success-light-bg: #D1FAE5;
  --color-success-light-text: #065F46;
  --color-error: #DC2626;
  --color-error-light-bg: #FEF2F2;
  --color-error-light-border: #FECACA;
  --color-wechat: #07C160;
  --color-wechat-dark: #06AD56;
  --color-wechat-light: #2BD47E;
  --color-success-light: #34D399;
  
  /* 深色背景 */
  --color-dark-bg: #0F172A;
  --color-dark-secondary: #1E293B;
  
  /* Hero渐变色 - 极光主题 */
  --color-banner-start: #0D9488;
  --color-banner-mid: #0891B2;
  --color-banner-end: #1E40AF;
  
  /* 阴影系统 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-card-hover: 0 20px 25px -5px rgba(13, 148, 136, 0.12), 0 8px 10px -6px rgba(13, 148, 136, 0.1);
  --shadow-nav: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
  --shadow-accent: 0 10px 15px -3px rgba(249, 115, 22, 0.3);
  
  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* 过渡 */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* 布局 */
  --container-max: 1200px;
  --nav-height: 80px;
  --nav-height-scrolled: 64px;
  --nav-height-mobile: 64px;
  
  /* 字体 - 系统字体栈 */
  --font-heading: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --font-cn: "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
  --font-en: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --fs-h1: 36px;
  --fs-h2: 28px;
  --fs-h3: 20px;
  --fs-body: 16px;
  --fs-sm: 14px;
  --fs-xs: 13px;
  --fs-data: 42px;
  
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  
  /* 间距系统 */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --spacing-section: 80px;
  
  /* 行高 */
  --lh-body: 1.71;
  --lh-heading: 1.3;
}

/* ===== CTA 按钮 (联系页) ===== */
.cta-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  height: 52px;
  width: 100%;
  text-decoration: none;
  cursor: pointer;
  border: none;
  overflow: hidden;
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.cta-btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.6s ease;
}
.cta-btn:hover::after {
  left: 120%;
}
.cta-btn .cta-btn__icon {
  display: flex;
  align-items: center;
  transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.cta-btn:hover .cta-btn__icon {
  transform: translateY(-2px);
}
.cta-btn--wechat {
  background: linear-gradient(135deg, var(--color-wechat) 0%, var(--color-wechat-dark) 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(7, 193, 96, 0.3);
}
.cta-btn--wechat:hover {
  background: linear-gradient(135deg, var(--color-wechat-light) 0%, var(--color-wechat) 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(7, 193, 96, 0.4);
}
.cta-btn--wechat:active {
  transform: translateY(0);
  box-shadow: 0 4px 14px rgba(7, 193, 96, 0.3);
}
.cta-btn--submit {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(13, 148, 136, 0.3);
}
.cta-btn--submit:hover {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(13, 148, 136, 0.4);
}
.cta-btn--submit:active {
  transform: translateY(0);
  box-shadow: 0 4px 14px rgba(13, 148, 136, 0.3);
}
.cta-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}
.cta-btn:disabled::after {
  display: none;
}
.cta-btn:disabled .cta-btn__icon svg {
  animation: spin 1s linear infinite;
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ===== 高级动画 Keyframes ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(13, 148, 136, 0.4); }
  50% { box-shadow: 0 0 0 12px rgba(13, 148, 136, 0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@keyframes glow {
  0%, 100% { filter: drop-shadow(0 0 8px rgba(13, 148, 136, 0.3)); }
  50% { filter: drop-shadow(0 0 20px rgba(13, 148, 136, 0.6)); }
}
@keyframes gradientFlow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -30px) scale(1.05); }
  50% { transform: translate(0, -40px) scale(1); }
  75% { transform: translate(-30px, -20px) scale(0.95); }
}
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-60px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes counter {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== 全局布局 ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.section {
  padding: var(--spacing-section) 0;
  contain: layout style;
}

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

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

.section--cta {
  background: linear-gradient(135deg, var(--color-banner-start) 0%, var(--color-banner-end) 100%);
  text-align: center;
}

.section--cta .section__title {
  color: var(--color-white);
  margin-bottom: 16px;
}

.section--cta .section__subtitle {
  color: rgba(255, 255, 255, 0.80);
  margin-bottom: 32px;
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-gray-bg);
  border-radius: 4px;
  font-size: 13px;
  color: var(--color-gray-600);
}

.tag--pill {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-bg-gray);
  border-radius: 20px;
  font-size: 12px;
  color: var(--color-body);
}

.section__title {
  font-family: var(--font-heading);
  font-size: var(--fs-h2);
  font-weight: 600;
  color: var(--color-title);
  text-align: center;
  margin-bottom: var(--spacing-sm);
  position: relative;
  display: inline-block;
  width: 100%;
}

.section__title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  margin: var(--spacing-md) auto 0;
  border-radius: 2px;
}

.section__subtitle {
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--color-body);
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--spacing-3xl);
  position: relative;
}

.section__subtitle::before {
  content: '';
  display: inline-block;
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-muted), transparent);
  vertical-align: middle;
  margin-right: 12px;
}

.section__subtitle::after {
  content: '';
  display: inline-block;
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-muted), transparent);
  vertical-align: middle;
  margin-left: 12px;
}

/* ===== 栅格系统 ===== */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

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

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

/* ===== 导航栏 - 商务简约风格 ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: var(--color-white);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  transition: height var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
  will-change: height, box-shadow;
  contain: layout style;
}

.navbar--scrolled {
  height: var(--nav-height-scrolled);
  background: var(--color-white);
  box-shadow: 0 2px 16px rgba(15, 23, 42, 0.08);
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

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

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 600;
  color: var(--color-title);
  font-family: var(--font-heading);
  letter-spacing: -0.3px;
}

.navbar__logo img {
  width: auto;
  height: 36px;
  object-fit: contain;
}

.navbar__logo svg {
  width: 36px;
  height: 36px;
  color: var(--color-primary);
}

.navbar__menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.navbar__link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-muted);
  position: relative;
  padding: 10px 16px;
  border-radius: 8px;
  transition: all var(--transition-base);
  font-family: var(--font-body);
  letter-spacing: -0.2px;
}

.navbar__link::before {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: all var(--transition-base);
  transform: translateX(-50%);
  border-radius: 2px;
}

.navbar__link:hover {
  color: var(--color-title);
  background-color: rgba(13, 148, 136, 0.05);
}

.navbar__link:hover::before {
  width: 24px;
}

/* ===== 导航栏二级菜单 ===== */
.navbar__item {
  position: relative;
  display: flex;
  align-items: center;
}

.navbar__item--has-dropdown .navbar__link {
  display: flex;
  align-items: center;
  gap: 4px;
}

.navbar__item--has-dropdown .navbar__link::after {
  content: "";
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  transition: transform var(--transition-base);
}

.navbar__item--has-dropdown:hover .navbar__link::after {
  transform: rotate(180deg);
}

.navbar__dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 200px;
  background-color: var(--color-white);
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  border: 1px solid var(--color-border);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  z-index: 1001;
}

.navbar__dropdown::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 10px;
  height: 10px;
  background-color: var(--color-white);
  border-left: 1px solid var(--color-border);
  border-top: 1px solid var(--color-border);
}

.navbar__item--has-dropdown:hover .navbar__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.navbar__dropdown-link {
  display: block;
  padding: 12px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-title);
  white-space: nowrap;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.navbar__dropdown-link:hover {
  background-color: rgba(13, 148, 136, 0.05);
  color: var(--color-primary);
}

.navbar__dropdown-link--active {
  color: var(--color-primary);
  background-color: rgba(13, 148, 136, 0.08);
}

.navbar__link--active {
  color: var(--color-title);
  font-weight: 600;
  background-color: rgba(13, 148, 136, 0.08);
}

.navbar__link--active::before {
  width: 24px;
}

.navbar__cta {
  margin-left: 16px;
  flex-shrink: 0;
}

.navbar__cta .btn--primary {
  background: var(--color-primary);
  border-radius: 10px;
  padding: 12px 26px;
  font-weight: 500;
  font-size: 15px;
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.2);
  transition: all var(--transition-base);
}

.navbar__cta .btn--primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(13, 148, 136, 0.3);
}

.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.navbar__hamburger span {
  width: 24px;
  height: 2px;
  background-color: var(--color-title);
  transition: all var(--transition-base);
}

/* ===== Hero 动态背景 ===== */
.hero {
  min-height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-banner-start) 0%, var(--color-banner-mid) 50%, var(--color-banner-end) 100%);
  background-size: 400% 400%;
  animation: gradientFlow 15s ease infinite;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
  will-change: background-position;
  contain: layout style;
}

/* Hero 带背景图 - 统一设置 */
.hero--with-bg {
  background-size: cover !important;
  background-position: center center !important;
  background-repeat: no-repeat !important;
  animation: none !important;
  background-attachment: scroll;
}

.hero--with-bg::before,
.hero--with-bg::after,
.hero--with-bg .hero__orb {
  display: none;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse 80% 50% at 20% 40%, rgba(20, 184, 166, 0.2) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 80% 60%, rgba(249, 115, 22, 0.08) 0%, transparent 50%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.03;
  pointer-events: none;
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.4;
  animation: orbFloat 20s ease-in-out infinite;
  pointer-events: none;
}

.hero__orb--1 {
  width: 400px;
  height: 400px;
  background: linear-gradient(135deg, rgba(13, 148, 136, 0.3), rgba(20, 184, 166, 0.2));
  top: -100px;
  right: 10%;
  animation-delay: 0s;
}

.hero__orb--2 {
  width: 300px;
  height: 300px;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(13, 148, 136, 0.15));
  bottom: -50px;
  left: 5%;
  animation-delay: -5s;
}

.hero__orb--3 {
  width: 200px;
  height: 200px;
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.25), rgba(13, 148, 136, 0.15));
  top: 30%;
  left: 50%;
  animation-delay: -10s;
}

/* Hero统一使用动态渐变背景 */
.hero--home,
.hero--solutions,
.hero--smart-park,
.hero--digital-hall,
.hero--enterprise,
.hero--infrastructure,
.hero--services,
.hero--cases,
.hero--about {
  background: linear-gradient(135deg, var(--color-banner-start) 0%, var(--color-banner-end) 100%);
  background-size: 400% 400%;
  animation: gradientFlow 15s ease infinite;
}

.hero--inner {
  min-height: 520px;
  padding-top: 140px;
  padding-bottom: 80px;
  display: flex;
  align-items: center;
}

/* 确保所有 Hero 内容左对齐基准一致 */
.hero .container {
  width: 100%;
}

.hero--inner .hero__title {
  font-size: 28px;
}

.hero--inner .hero__desc {
  font-size: 15px;
  margin-bottom: 0;
}

.hero__content {
  max-width: 600px;
  margin-right: auto;
  margin-left: 0;
  text-align: left;
  position: relative;
  z-index: 1;
}

.hero__title,
.hero__desc {
  text-align: left;
}

.hero__tag {
  display: inline-block;
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.70);
  margin-bottom: var(--spacing-md);
  padding: 6px 16px;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(10px);
  animation: fadeInDown 0.8s ease forwards;
  opacity: 0;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: var(--fs-h1);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.3;
  margin-bottom: 24px;
  animation: fadeInUp 0.8s ease 0.2s forwards;
  opacity: 0;
  text-shadow: 0 2px 20px rgba(0,0,0,0.2);
}

.hero__desc {
  font-size: 16px;
  line-height: 32px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 0;
  animation: fadeInUp 0.8s ease 0.4s forwards;
  opacity: 0;
  text-shadow: 0 1px 10px rgba(0,0,0,0.15);
}

.hero__actions {
  display: flex;
  gap: var(--spacing-md);
  animation: fadeInUp 0.8s ease 0.6s forwards;
  opacity: 0;
}

/* ===== 按钮 - 极光主题 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
  border-radius: var(--radius-md);
  padding: 12px 24px;
  transition: all var(--transition-base);
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  border: 2px solid transparent;
  letter-spacing: 0.02em;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    120deg,
    transparent 30%,
    rgba(255, 255, 255, 0.4) 50%,
    transparent 70%
  );
  transition: left 0.6s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(13, 148, 136, 0.35);
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(13, 148, 136, 0.4);
}

.btn--primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.3);
}

.btn--no-effect,
.btn--no-effect:hover,
.btn--no-effect:active {
  transition: none;
  transform: none;
  box-shadow: none;
}

.btn--no-effect::before {
  display: none;
}

.btn--secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--secondary:hover {
  background: rgba(13, 148, 136, 0.08);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.15);
}

.btn--accent {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35);
}

.btn--accent:hover {
  background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent) 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(249, 115, 22, 0.4);
}

.btn--accent:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

.btn--secondary:hover {
  background-color: rgba(13, 148, 136, 0.08);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.15);
}

.btn--hero-secondary {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255,255,255,0.5);
  backdrop-filter: blur(10px);
}

.btn--hero-secondary:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255,255,255,0.15);
}

.btn--success {
  background: linear-gradient(135deg, var(--color-success) 0%, var(--color-success-hover) 100%);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
}

.btn--success:hover {
  background: linear-gradient(135deg, var(--color-success-light) 0%, var(--color-success) 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(16, 185, 129, 0.4);
}

.btn--lg {
  padding: 14px 32px;
  font-size: 15px;
}

.btn--full {
  width: 100%;
}

.btn--white-on-dark {
  background: var(--color-white);
  color: var(--color-primary);
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(255, 255, 255, 0.25);
}

.btn--white-on-dark:hover {
  background: rgba(255, 255, 255, 0.92);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.3);
}

/* ===== 卡片 - 极光主题 ===== */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-card);
  transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  will-change: transform, box-shadow;
  contain: layout style paint;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, transparent 0%, rgba(13, 148, 136, 0.3) 50%, transparent 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(13, 148, 136, 0.25);
}

.card:hover::before {
  opacity: 1;
}

.card__icon {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), color 0.3s ease;
}

.card:hover .card__icon {
  transform: scale(1.15) rotate(5deg);
  color: var(--color-secondary);
}

.card__title {
  font-family: var(--font-heading);
  font-size: var(--fs-h3);
  font-weight: 600;
  color: var(--color-title);
  margin-bottom: var(--spacing-xs);
  transition: color 0.3s ease;
}

.card:hover .card__title {
  color: var(--color-primary);
}

.card__header {
  display: flex;
  align-items: center;
  gap: 16px;
}

.card__title--inline {
  margin: 0;
}

.card__desc {
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--color-body);
  margin-bottom: var(--spacing-md);
}

.card__desc--flex {
  flex: 1;
}

.card__link {
  font-size: var(--fs-body);
  color: var(--color-secondary);
  font-weight: var(--fw-medium);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.3s ease;
}

.card__link:hover {
  color: var(--color-primary);
  gap: 10px;
}

.card__link svg {
  transition: transform 0.3s ease;
}

.card__link:hover svg {
  transform: translateX(4px);
}

.card--full-height {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card--horizontal {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  min-height: 140px;
}

.card--centered {
  text-align: center;
}

.card--stacked {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card__icon--centered {
  margin: 0 auto 12px;
}

.card__icon--painpoint {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  color: var(--color-primary);
}

.card__content--horizontal {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card__title--no-margin {
  margin: 0;
}

.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.card__link--push {
  margin-top: auto;
}

.icon--gray {
  width: 48px;
  height: 48px;
  color: var(--color-gray-400);
}

.card__title--colored {
  color: var(--color-title);
}

.card__title--painpoint {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-title);
  margin-bottom: 8px;
}

.card__desc--painpoint {
  margin: 0;
}

.partner-logo {
  width: 100%;
  max-width: 1200px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.card__image-container {
  width: 100%;
  height: 180px;
  overflow: hidden;
  background: var(--color-gray-bg);
  contain: layout paint;
}

.card__image-container--gradient {
  width: 100%;
  height: 180px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  contain: layout paint;
}

.card__icon-box {
  width: 120px;
  height: 120px;
  background: var(--color-gray-bg);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ===== 表单 ===== */
.form__group {
  margin-bottom: var(--spacing-md);
}

.form__label {
  display: block;
  font-size: var(--fs-body);
  font-weight: var(--fw-medium);
  color: var(--color-title);
  margin-bottom: var(--spacing-xs);
}

.form__input,
.form__textarea {
  width: 100%;
  height: 48px;
  padding: 12px 16px;
  font-size: var(--fs-body);
  color: var(--color-body);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--color-muted);
}

.form__input:focus,
.form__textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.12);
  background-color: rgba(13, 148, 136, 0.02);
}

.form__textarea {
  height: 120px;
  resize: vertical;
}

/* ===== 公司简介 ===== */
.company-intro {
  background: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.company-intro__title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-title);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.company-intro__title::before {
  content: '';
  width: 4px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 2px;
}

.company-intro__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.company-intro__item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border-lighter);
}

.company-intro__item:last-child {
  border-bottom: none;
}

.company-intro__icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  background: rgba(13, 148, 136, 0.08);
  border-radius: 50%;
  margin-top: 2px;
}

.company-intro__label {
  font-weight: 600;
  color: var(--color-title);
  margin-right: var(--spacing-xs);
}

.company-intro__value {
  color: var(--color-body);
  line-height: 1.7;
}

.stats-cards {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.stats-card {
  background: transparent;
  border: 1px solid var(--color-border-light);
  color: var(--color-title);
  padding: 24px 16px;
  border-radius: 8px;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  min-height: 100px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

.stats-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.stats-card__number {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 4px;
  letter-spacing: -1px;
  color: var(--color-title);
}

.stats-card__label {
  font-size: 13px;
  color: var(--color-body);
  opacity: 0.92;
  line-height: 1.4;
  font-weight: 500;
}

/* 深色卡片的文字颜色 */
.stats-card.stats-card--dark .stats-card__number,
.stats-card.stats-card--dark .stats-card__label,
[style*="background:linear-gradient"] .stats-card__number,
[style*="background:linear-gradient"] .stats-card__label {
  color: var(--color-white) !important;
}

.stats-card.stats-card--dark .stats-card__label {
  opacity: 0.9 !important;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  height: 100%;
}

.about-layout {
  display: grid;
  grid-template-columns: 55% 45%;
  gap: 32px;
  align-items: stretch;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: stretch;
}

#contact {
  scroll-margin-top: var(--nav-height);
}

.contact-layout__container {
  max-width: 1000px;
}

.stats-card--centered {
  padding: 24px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.stats-card__icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 12px;
  color: var(--color-primary);
}

.stats-card__number--lg {
  font-size: 32px;
  font-weight: 600;
  color: var(--color-title);
}

.stats-card__label--sm {
  font-size: 14px;
  color: var(--color-body);
  margin-top: 6px;
}

.contact-info-card {
  background: var(--color-white);
  border-radius: 12px;
  padding: 28px;
  box-shadow: var(--shadow-card);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.contact-info-card__title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-title);
  margin-bottom: 20px;
}

.contact-info-card__body {
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
}

.contact-info-card__footer {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-light);
  display: flex;
  justify-content: center;
}

.icon-text--gap-md {
  gap: 12px;
}

.icon--contact {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
}

.contact-detail__label {
  font-size: 12px;
  color: var(--color-gray-400);
}

.contact-detail__value {
  font-size: 14px;
  color: var(--color-body);
}

.contact-detail {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-card {
  background: var(--color-white);
  border-radius: 12px;
  padding: 28px;
  box-shadow: var(--shadow-card);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.form-card__title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-title);
  margin-bottom: 20px;
}

.form-card__body {
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
}

.form-card__footer {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-light);
  display: flex;
  justify-content: center;
}

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

.form-success-card__icon {
  width: 56px;
  height: 56px;
  color: var(--color-primary);
  margin: 0 auto 16px;
}

.form-success-card__title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-title);
  margin: 0 0 8px 0;
}

.form-success-card__desc {
  font-size: 15px;
  color: var(--color-body);
  margin: 0;
}

.partner-image {
  width: 100%;
  max-width: 1200px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.company-intro--full {
  height: 100%;
  padding: 28px;
}

.company-intro__title--no-border {
  margin: 0 0 16px 0;
}

.company-intro__text--body {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-body);
  margin: 0;
}

.carousel {
  position: relative;
}

.carousel__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: white;
  border: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.carousel__btn:hover {
  box-shadow: 0 6px 16px rgba(0,0,0,0.15);
  border-color: var(--color-primary);
}

.carousel__btn--prev {
  left: -20px;
}

.carousel__btn--next {
  right: -20px;
}

.carousel__viewport {
  overflow: hidden;
}

.carousel__track {
  display: flex;
  transition: transform 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  gap: 24px;
  will-change: transform;
  backface-visibility: hidden;
}

.carousel__slide {
  flex: 0 0 calc(25% - 18px);
  text-align: center;
  overflow: hidden;
  padding: 0;
}

.carousel--cols-3 .carousel__slide {
  flex: 0 0 calc(33.333% - 16px);
}

.carousel__slide-content {
  padding: 20px;
}

.carousel__slide-title {
  color: var(--color-title);
  margin-bottom: 8px;
}

.carousel__slide-desc {
  margin: 0;
}

.carousel__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.carousel__dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}

.carousel__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-gray-300);
  cursor: pointer;
  transition: all 0.3s ease;
}

.carousel__dot--active {
  background-color: var(--color-primary);
}

.card__tags--mt {
  margin-top: 12px;
}

.stats-item {
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.stats-item:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.08);
}

.stats-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 12px;
  color: var(--color-primary);
}

.stats-number {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-title);
  margin-bottom: 6px;
}

.stats-label {
  font-size: 14px;
  color: var(--color-body);
  margin: 0;
}



/* ===== 页脚 ===== */
.footer {
  background-color: var(--color-dark-bg);
  color: rgba(255,255,255,0.70);
  padding: 60px 0 30px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: var(--spacing-xl);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 18px;
  font-weight: var(--fw-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.footer__logo img {
  width: auto;
  height: 36px;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.footer__logo svg {
  width: 28px;
  height: 28px;
  color: var(--color-secondary);
}

.footer__desc {
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: rgba(255,255,255,0.55);
  max-width: 280px;
}

.footer__heading {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer__link {
  display: block;
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.55);
  margin-bottom: var(--spacing-xs);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-xs);
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.55);
  margin-bottom: var(--spacing-xs);
  line-height: 1.5;
}

.footer__contact-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-secondary);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer__contact-wrapper {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.footer__contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  flex: 1;
  min-width: 0;
}

.footer__qr {
  flex-shrink: 0;
}

.footer__qr img {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  cursor: pointer;
}

.footer__qr img:hover {
  transform: scale(1.8);
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
}

.footer__submenu {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px 16px;
  margin-top: 8px;
  margin-bottom: 12px;
  padding-left: var(--spacing-sm);
  border-left: 1px solid rgba(255,255,255,0.15);
}

.footer__submenu .footer__link {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  margin-bottom: 0;
  white-space: nowrap;
  font-weight: 400;
  line-height: 1.4;
  padding: 4px 0;
}

.footer__submenu .footer__link:hover {
  color: rgba(255,255,255,0.80);
}

/* ===== Process Flow Styles ===== */
.process-flow {
  display: flex;
  flex-wrap: nowrap;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 0;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-light) transparent;
}

.process-flow::-webkit-scrollbar {
  height: 6px;
}

.process-flow::-webkit-scrollbar-track {
  background: transparent;
}

.process-flow::-webkit-scrollbar-thumb {
  background-color: var(--color-border-light);
  border-radius: 3px;
}

.process-flow__item {
  flex: 0 0 calc(14.28% - 17px);
  min-width: 140px;
  width: 140px;
  height: 200px;
  text-align: center;
  padding: 20px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.process-flow__number {
  width: 40px;
  height: 40px;
  margin: 0 auto 12px;
  display: block;
}

.process-flow__title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-title);
  margin-bottom: 8px;
}

.process-flow__desc {
  font-size: 13px;
  color: var(--color-gray-500);
  line-height: 1.5;
}

.process-flow__arrow {
  position: absolute;
  right: -10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 24px;
  color: var(--color-primary);
  font-weight: 300;
}

.process-flow__item--last {
  margin-right: 0;
}

.process-flow__item--last .process-flow__arrow {
  display: none;
}

@media (max-width: 768px) {
  .process-flow {
    flex-direction: column;
    overflow-x: visible;
  }
  
  .process-flow__item {
    flex: 1 1 100%;
    min-width: auto;
  }
  
  .process-flow__arrow {
    display: none;
  }
}

.footer__bottom {
  text-align: center;
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.40);
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.footer__ai-note {
  text-align: center;
}

.footer__ai-note span {
  font-size: 9px;
  color: rgba(156, 163, 175, 0.5);
  font-style: italic;
}

/* ===== 图标 ===== */
.icon {
  display: inline-block;
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.icon--sm {
  width: 20px;
  height: 20px;
}

.icon--lg {
  width: 32px;
  height: 32px;
}

.icon--secondary {
  color: var(--color-secondary);
}

.icon--muted {
  color: var(--color-muted);
}

.icon--white {
  color: var(--color-white);
}

.icon-text {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* ===== 滚动浮现动画 Staggered ===== */
.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
              transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: opacity, transform;
}

.scroll-reveal--visible {
  opacity: 1;
  transform: translateY(0);
  will-change: auto;
}

.scroll-reveal-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  will-change: opacity, transform;
}

.scroll-reveal-left--visible {
  opacity: 1;
  transform: translateX(0);
  will-change: auto;
}

.scroll-reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s ease, transform 0.6s ease;
  will-change: opacity, transform;
}

.scroll-reveal-scale--visible {
  opacity: 1;
  transform: scale(1);
  will-change: auto;
}

.grid > .scroll-reveal:nth-child(1) { transition-delay: 0s; }
.grid > .scroll-reveal:nth-child(2) { transition-delay: 0.1s; }
.grid > .scroll-reveal:nth-child(3) { transition-delay: 0.2s; }
.grid > .scroll-reveal:nth-child(4) { transition-delay: 0.3s; }
.grid > .scroll-reveal:nth-child(5) { transition-delay: 0.4s; }
.grid > .scroll-reveal:nth-child(6) { transition-delay: 0.5s; }

.section__title.scroll-reveal {
  transform: translateY(30px);
}

.section__subtitle.scroll-reveal {
  transform: translateY(30px);
  transition-delay: 0.1s;
}

.section__title.scroll-reveal--visible,
.section__subtitle.scroll-reveal--visible {
  transform: translateY(0);
}

/* ===== 表单样式 ===== */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--color-gray-700);
  font-weight: 500;
}

.form-label--required::after {
  content: " *";
  color: var(--color-error);
}

.form-input,
.form-select {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--color-border-light);
  border-radius: 6px;
  font-size: 14px;
  color: var(--color-gray-600);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  box-sizing: border-box;
  font-family: var(--font-body);
  background: var(--color-white);
}

.form-input:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
}

.form-input::placeholder {
  color: var(--color-gray-400);
}

.form-captcha-row {
  display: flex;
  gap: 12px;
}

.form-captcha-row .form-input {
  flex: 1;
}

.form-captcha-code {
  min-width: 100px;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--color-border-light);
  border-radius: 6px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-gray-bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 2px;
  cursor: pointer;
  transition: border-color 0.2s ease;
  user-select: none;
}

.form-captcha-code:hover {
  border-color: var(--color-primary);
}

.form-message {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 13px;
  text-align: center;
}

.form-message--success {
  background: var(--color-success-light-bg);
  color: var(--color-success-light-text);
}

.form-message--error {
  padding: 12px 16px;
  background: var(--color-error-light-bg);
  border: 1px solid var(--color-error-light-border);
  border-radius: 8px;
  color: var(--color-error);
  font-size: 14px;
  text-align: center;
}

/* ===== 案例卡片样式 ===== */
.case-card {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  width: 100%;
  min-height: 280px;
  margin-bottom: 24px;
  transition: all 0.3s ease;
}

.case-card:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.case-left {
  width: 35%;
  flex-shrink: 0;
  position: relative;
}

.case-title-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.7);
  color: var(--color-white);
  padding: 12px 24px;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
  border-radius: 8px;
  z-index: 10;
  white-space: nowrap;
  max-width: 90%;
}

.case-visual {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  background: transparent;
}

.case-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border: none;
  outline: none;
  box-shadow: none;
  margin: 0;
  padding: 0;
  background: transparent;
  transform: scale(1.01);
  transition: transform 0.3s ease;
}

.case-card:hover .case-visual img {
  transform: scale(1.05);
}

.case-content {
  flex: 1;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.case-sections {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 16px;
}

.case-section {
  width: 100%;
}

.case-section-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.case-section-title svg {
  width: 14px;
  height: 14px;
}

.case-section-text {
  font-size: 13px;
  color: var(--color-body);
  line-height: 1.5;
  margin: 0;
}

.case-bottom-row {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.case-tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.case-tech-tag {
  font-size: 11px;
  color: var(--color-body);
  background: var(--color-gray-bg-light);
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  white-space: nowrap;
}

/* Metric通过CSS绝对定位放在右上角 */
.case-metric {
  position: absolute;
  top: 20px;
  right: 24px;
  text-align: center;
  padding: 10px 18px;
  background: linear-gradient(135deg, rgba(13, 148, 136, 0.08), rgba(20, 184, 166, 0.04));
  border-radius: 8px;
  border: 1px solid rgba(13, 148, 136, 0.15);
  min-width: 110px;
  z-index: 10;
}

.case-metric-value {
  font-family: var(--font-heading);
  font-size: 30px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 4px;
}

.case-metric-label {
  font-size: 11px;
  color: var(--color-muted);
  font-weight: 500;
}

.cases-tabs {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

.cases-tabs__group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.cases-tabs__label {
  font-weight: 600;
  color: var(--color-gray-dark);
  font-size: 13px;
  min-width: 70px;
  padding: 4px 0;
  flex-shrink: 0;
}

.cases-tabs__content {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  flex: 1;
}

.cases-tab {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 16px;
  border: 1px solid var(--color-border-light);
  border-radius: 100px;
  background: var(--color-white);
  color: var(--color-body);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.cases-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.cases-tab--active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.cases-tab--active:hover {
  color: var(--color-white);
}

.cases-tab__count {
  font-size: 11px;
  font-weight: 400;
  opacity: 0.7;
}

.cases-tab--active .cases-tab__count {
  opacity: 0.9;
}

.cases-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.cases-count {
  font-size: 13px;
  color: var(--color-muted);
}

.cases-load-more-wrapper {
  display: flex;
  justify-content: center;
  margin-top: 32px;
}

.cases-load-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 36px;
  border: 1px solid var(--color-border-light);
  border-radius: 100px;
  background: var(--color-white);
  color: var(--color-body);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.25s ease;
}

.cases-load-more:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.1);
}

@media (max-width: 992px) {
  .case-card {
    min-height: auto;
    flex-direction: column;
  }
  
  .case-left {
    width: 100%;
  }
  
  .case-visual {
    height: 160px;
  }
  
  .case-title-overlay {
    font-size: 15px;
    padding: 12px 20px;
  }
  
  .case-content {
    padding: 20px;
  }
  
  .case-metric {
    position: absolute;
    top: 20px;
    right: 20px;
    width: auto;
    min-width: 120px;
  }
  
  .case-metric-value {
    font-size: 28px;
  }
}