/* ==================== CSS 变量 ==================== */
:root {
  /* 主色调 - 海瑭（海+珊瑚）*/
  --ocean-900: #0a1b3d;
  --ocean-800: #0f2954;
  --ocean-700: #163a6e;
  --ocean-600: #1e4d8b;
  --ocean-500: #2563a8;
  --ocean-400: #3b82c4;
  --ocean-300: #6ab0db;
  --ocean-200: #a8d0ea;
  --ocean-100: #d6e9f7;
  --ocean-50: #f0f7fc;

  --coral-600: #e0556b;
  --coral-500: #ed6a7e;
  --coral-400: #f4889a;
  --coral-300: #f9aab7;
  --coral-200: #fccdd5;

  --teal-500: #14b8a6;
  --teal-400: #2dd4bf;
  --teal-300: #5eead4;

  /* 中性色 */
  --gray-900: #0f172a;
  --gray-800: #1e293b;
  --gray-700: #334155;
  --gray-600: #475569;
  --gray-500: #64748b;
  --gray-400: #94a3b8;
  --gray-300: #cbd5e1;
  --gray-200: #e2e8f0;
  --gray-100: #f1f5f9;
  --gray-50: #f8fafc;

  /* 功能色 */
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;

  /* 渐变 */
  --grad-primary: linear-gradient(135deg, var(--ocean-600), var(--ocean-400));
  --grad-hero: linear-gradient(135deg, var(--ocean-900) 0%, var(--ocean-700) 40%, var(--ocean-500) 100%);
  --grad-coral: linear-gradient(135deg, var(--coral-600), var(--coral-400));
  --grad-teal: linear-gradient(135deg, var(--teal-500), var(--teal-300));

  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
  --shadow-xl: 0 24px 64px rgba(0,0,0,0.15);

  /* 布局 */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --container-max: 1200px;
  --nav-height: 72px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================== Reset ==================== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Helvetica Neue', sans-serif;
  color: var(--gray-800);
  line-height: 1.6;
  background: #fff;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ==================== 布局工具 ==================== */
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; position: relative; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 900;
  color: var(--ocean-900);
  letter-spacing: -0.5px;
  position: relative;
  display: inline-block;
}
.section-title::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--grad-coral);
  border-radius: 2px;
}
.section-subtitle {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  color: var(--ocean-800);
}
.section-sub-header { text-align: center; margin-bottom: 32px; }
.section-desc {
  margin-top: 24px;
  font-size: clamp(15px, 2vw, 18px);
  color: var(--gray-500);
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

/* ==================== 按钮 ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(37, 99, 168, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 168, 0.4);
}
.btn-outline {
  border: 2px solid rgba(255,255,255,0.4);
  color: #fff;
  backdrop-filter: blur(4px);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.6);
}
.btn-lg { padding: 16px 40px; font-size: 17px; }
.btn-block { width: 100%; }

/* ==================== 导航栏 ==================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
.navbar-scrolled {
  border-bottom-color: var(--gray-200);
  box-shadow: var(--shadow-sm);
}
.nav-container {
  max-width: var(--container-max);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 20px;
  color: var(--ocean-900);
}
.logo-icon { font-size: 28px; }
.logo-icon-img { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.nav-right {
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav-menu {
  display: flex;
  gap: 4px;
}
.nav-menu a {
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-600);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-menu a:hover {
  color: var(--ocean-600);
  background: var(--ocean-50);
}
.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: var(--gray-100);
  color: var(--gray-600);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.lang-switch:hover {
  background: var(--ocean-100);
  color: var(--ocean-600);
}
.nav-admin-btn {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  background: var(--ocean-900);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.nav-admin-btn:hover {
  background: var(--ocean-700);
}
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--ocean-900);
  border-radius: 2px;
  transition: var(--transition);
}
.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==================== Hero ==================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  background: var(--grad-hero);
  overflow: hidden;
  position: relative;
}
.hero-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  overflow: hidden;
  pointer-events: none;
}
.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
}
.blob-1 {
  width: 500px; height: 500px;
  background: var(--ocean-400);
  top: -100px; right: -100px;
  animation: floatBlob 8s ease-in-out infinite;
}
.blob-2 {
  width: 400px; height: 400px;
  background: var(--coral-500);
  bottom: -80px; left: 10%;
  opacity: 0.2;
  animation: floatBlob 10s ease-in-out infinite reverse;
}
@keyframes floatBlob {
  0%, 100% { transform: translate(0,0) scale(1); }
  50% { transform: translate(30px, -30px) scale(1.1); }
}
.hero-grid-pattern {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #fff;
  max-width: 800px;
  margin: 0 auto;
}
.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 28px;
  backdrop-filter: blur(4px);
}
.hero-title {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff 30%, var(--ocean-200) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: clamp(16px, 2.5vw, 20px);
  line-height: 1.8;
  color: rgba(255,255,255,0.8);
  margin-bottom: 40px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-scroll-down {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 42px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}
.hero-scroll-down span {
  width: 3px;
  height: 8px;
  background: rgba(255,255,255,0.6);
  border-radius: 2px;
  animation: scrollDown 2s ease-in-out infinite;
}
@keyframes scrollDown {
  0% { opacity: 0; transform: translateY(-4px); }
  50% { opacity: 1; }
  100% { opacity: 0; transform: translateY(12px); }
}

/* ==================== 统计 ==================== */
.stats-section {
  padding: 48px 0;
  background: var(--ocean-900);
  position: relative;
  z-index: 1;
}
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item {
  text-align: center;
  position: relative;
}
.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  height: 40px;
  width: 1px;
  background: rgba(255,255,255,0.15);
}
.stat-value {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 900;
  background: var(--grad-coral);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-top: 4px;
}

/* ==================== 关于我们 ==================== */
.about-section {
  background: var(--gray-50);
}
#about-content {
  display: flex;
  flex-direction: column;
  gap: 48px;
}
.about-text {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}
.about-text .section-title { text-align: center; }
.about-text .section-desc {
  font-size: 17px;
  color: var(--gray-600);
  margin: 24px auto 0;
}
.about-mission {
  display: flex;
  gap: 32px;
  margin-top: 40px;
  flex-wrap: wrap;
  justify-content: center;
}
.mission-item {
  flex: 1;
  min-width: 280px;
  text-align: left;
  background: #fff;
  padding: 28px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-100);
}
.mission-label {
  display: inline-block;
  padding: 4px 12px;
  background: var(--ocean-100);
  color: var(--ocean-600);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
}
.mission-item p {
  font-size: 15px;
  color: var(--gray-600);
  line-height: 1.8;
}
.about-values {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.value-card {
  background: #fff;
  padding: 32px 24px;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--gray-100);
}
.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--ocean-200);
}
.value-icon {
  font-size: 40px;
  margin-bottom: 16px;
}
.value-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--ocean-900);
  margin-bottom: 8px;
}
.value-card p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ==================== 产品中心 ==================== */
.products-section {
  background: #fff;
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--grad-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--ocean-200);
}
.product-card:hover::before { transform: scaleX(1); }
.product-icon {
  font-size: 48px;
  margin-bottom: 20px;
  display: inline-block;
}
.product-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--ocean-900);
  margin-bottom: 12px;
}
.product-desc {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 20px;
}
.product-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.feature-tag {
  padding: 4px 10px;
  background: var(--ocean-50);
  color: var(--ocean-600);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
}
.product-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--ocean-500);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ==================== 服务概览 ==================== */
.services-overview-section {
  background: var(--grad-hero);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.services-overview-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M30 30c0-11 9-20 20-20s20 9 20 20-9 20-20 20-20-9-20-20zm-30 0c0-11 9-20 20-20s20 9 20 20-9 20-20 20-20-9-20-20z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.services-overview {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
}
.service-overview-card {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  text-align: center;
  color: #fff;
  transition: var(--transition);
}
.service-overview-card:hover {
  background: rgba(255,255,255,0.15);
  transform: translateY(-4px);
}
.so-icon { font-size: 44px; margin-bottom: 16px; }
.service-overview-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}
.service-overview-card p {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
}
.services-overview-section .section-title,
.services-overview-section .section-desc {
  color: #fff;
}
.services-overview-section .section-title::after {
  background: var(--coral-500);
}
.services-overview-section .section-desc {
  color: rgba(255,255,255,0.7);
}

/* ==================== 定制开发 ==================== */
.custom-section {
  background: var(--gray-50);
}
.custom-process {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  position: relative;
}
.custom-process::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--ocean-300), var(--coral-300), var(--ocean-300));
  z-index: 0;
}
.step-card {
  position: relative;
  z-index: 1;
  text-align: center;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 28px 20px;
  transition: var(--transition);
}
.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--ocean-200);
}
.step-num {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  background: var(--grad-primary);
  color: #fff;
  font-size: 16px;
  font-weight: 900;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37, 99, 168, 0.3);
}
.step-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ocean-900);
  margin-bottom: 8px;
}
.step-desc {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.6;
}
.custom-tech {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.tech-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 20px 12px;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  transition: var(--transition);
}
.tech-item:hover {
  border-color: var(--ocean-300);
  box-shadow: var(--shadow);
}
.tech-icon { font-size: 28px; }
.tech-name { font-size: 14px; font-weight: 600; color: var(--ocean-900); }
.tech-cat { font-size: 11px; color: var(--gray-400); }

/* ==================== 人力外包 ==================== */
.outsourcing-section {
  background: #fff;
}
.outsourcing-positions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.position-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  transition: var(--transition);
}
.position-card:hover {
  background: #fff;
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--ocean-200);
}
.position-icon { font-size: 36px; margin-bottom: 16px; }
.position-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ocean-900);
  margin-bottom: 8px;
}
.position-card p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
}
.outsourcing-advantages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.adv-card {
  text-align: center;
  padding: 32px 20px;
  background: var(--ocean-50);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.adv-card:hover {
  background: var(--ocean-100);
}
.adv-icon { font-size: 36px; margin-bottom: 16px; }
.adv-card p {
  font-size: 14px;
  color: var(--ocean-800);
  font-weight: 500;
  line-height: 1.6;
}

/* ==================== CTA ==================== */
.cta-section {
  background: var(--ocean-50);
  padding: 80px 0;
}
.cta-box {
  background: var(--grad-hero);
  border-radius: var(--radius-lg);
  padding: 64px 40px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--coral-500) 0%, transparent 70%);
  opacity: 0.15;
}
.cta-title {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 900;
  margin-bottom: 16px;
  position: relative;
}
.cta-desc {
  font-size: 17px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 32px;
  position: relative;
}
.cta-box .btn {
  position: relative;
}

/* ==================== 联系我们 ==================== */
.contact-section {
  background: var(--gray-50);
}
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: #fff;
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}
.contact-item:hover {
  box-shadow: var(--shadow);
}
.contact-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  background: var(--ocean-50);
  border-radius: var(--radius);
  flex-shrink: 0;
}
.contact-label {
  font-size: 13px;
  color: var(--gray-400);
  margin-bottom: 4px;
}
.contact-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--ocean-900);
}
.wechat-qr-item {
  align-items: center;
}
.wechat-qr-wrapper {
  margin-top: 16px;
  display: flex;
  justify-content: flex-start;
}
.wechat-qr-img {
  width: 160px;
  height: 160px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-200);
  object-fit: cover;
}
.contact-form-wrapper {
  background: #fff;
  padding: 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow);
}
.contact-form-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--ocean-900);
  margin-bottom: 24px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: inherit;
  color: var(--gray-800);
  background: var(--gray-50);
  transition: var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--ocean-400);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(37, 99, 168, 0.1);
}
.form-group textarea { resize: vertical; }

/* ==================== 页脚 ==================== */
.footer {
  background: var(--ocean-900);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 900;
  color: #fff;
  margin-bottom: 16px;
}
.footer-logo .logo-icon-img { width: 40px; height: 40px; }
.footer-tagline {
  font-size: 15px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 4px;
}
.footer-tagline-en {
  font-size: 13px;
  color: rgba(255,255,255,0.3);
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a,
.footer-link-item {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-links a:hover,
.footer-link-item:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-contact-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}
.footer-contact-info p {
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* ==================== 回到顶部 ==================== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--ocean-600);
  color: #fff;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  background: var(--ocean-500);
  transform: translateY(-4px);
}

/* ==================== Toast ==================== */
.toast {
  position: fixed;
  top: 90px;
  right: 30px;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  z-index: 9999;
  opacity: 0;
  transform: translateX(100px);
  transition: var(--transition);
  box-shadow: var(--shadow-md);
}
.toast.show { opacity: 1; transform: translateX(0); }
.toast-success { background: var(--success); color: #fff; }
.toast-error { background: var(--danger); color: #fff; }
.toast-info { background: var(--ocean-500); color: #fff; }

/* ==================== 动画 ==================== */
.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .about-values { grid-template-columns: repeat(2, 1fr); }
  .custom-process { grid-template-columns: repeat(3, 1fr); }
  .custom-process::before { display: none; }
  .custom-tech { grid-template-columns: repeat(4, 1fr); }
  .outsourcing-positions { grid-template-columns: repeat(2, 1fr); }
  .outsourcing-advantages { grid-template-columns: repeat(2, 1fr); }
  .services-overview { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    padding: 16px 24px;
    gap: 4px;
    box-shadow: var(--shadow-md);
    transform: translateY(-150%);
    transition: var(--transition);
    max-height: calc(100vh - var(--nav-height));
    overflow-y: auto;
  }
  .nav-menu.active { transform: translateY(0); }
  .nav-admin-btn { display: none; }
  .menu-toggle { display: flex; }

  .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .stat-item:nth-child(2)::after { display: none; }

  .products-grid { grid-template-columns: 1fr; }
  .about-values { grid-template-columns: 1fr; }
  .custom-process { grid-template-columns: repeat(2, 1fr); }
  .custom-tech { grid-template-columns: repeat(3, 1fr); }
  .outsourcing-positions { grid-template-columns: 1fr; }
  .outsourcing-advantages { grid-template-columns: repeat(2, 1fr); }
  .services-overview { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .hero-actions { flex-direction: column; width: 100%; max-width: 300px; margin: 0 auto; }
  .hero-actions .btn { width: 100%; }
  .cta-box { padding: 40px 24px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .custom-tech { grid-template-columns: repeat(2, 1fr); }
  .outsourcing-advantages { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .back-to-top { bottom: 20px; right: 20px; }
}

/* ==================== 后台管理样式 ==================== */
.admin-body { background: var(--gray-100); }
.admin-login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--grad-hero);
  padding: 24px;
}
.admin-login-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-xl);
}
.admin-login-logo {
  text-align: center;
  margin-bottom: 32px;
}
.admin-login-logo .logo-icon { font-size: 48px; }
.admin-login-logo .logo-icon-img { width: 64px; height: 64px; margin: 0 auto; }
.admin-login-logo h1 { font-size: 22px; font-weight: 900; color: var(--ocean-900); margin-top: 8px; }
.admin-login-logo p { font-size: 14px; color: var(--gray-400); margin-top: 4px; }
.admin-login-form .form-group { margin-bottom: 20px; }
.admin-login-form input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: inherit;
}
.admin-login-form input:focus {
  outline: none;
  border-color: var(--ocean-400);
  box-shadow: 0 0 0 3px rgba(37, 99, 168, 0.1);
}
.admin-login-error {
  padding: 12px 16px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #dc2626;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: 16px;
}

/* Admin Layout */
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar {
  width: 240px;
  background: var(--ocean-900);
  color: rgba(255,255,255,0.7);
  padding: 24px 0;
  flex-shrink: 0;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.admin-sidebar-header {
  padding: 0 24px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 16px;
}
.admin-sidebar-header .logo-icon { font-size: 28px; }
.admin-sidebar-header .logo-icon-img { width: 36px; height: 36px; }
.admin-sidebar-header h2 { font-size: 16px; font-weight: 700; color: #fff; margin-top: 4px; }
.admin-sidebar-header p { font-size: 12px; color: rgba(255,255,255,0.4); }
.admin-nav { flex: 1; padding: 0 12px; }
.admin-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  cursor: pointer;
  margin-bottom: 4px;
}
.admin-nav-item:hover { background: rgba(255,255,255,0.08); color: #fff; }
.admin-nav-item.active { background: rgba(37,99,168,0.3); color: #fff; }
.admin-nav-item .nav-icon { font-size: 18px; width: 24px; text-align: center; }
.admin-sidebar-footer {
  padding: 16px 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.admin-logout-btn {
  width: 100%;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: rgba(239,68,68,0.15);
  color: #f87171;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.admin-logout-btn:hover { background: rgba(239,68,68,0.25); }

.admin-main {
  flex: 1;
  margin-left: 240px;
  padding: 24px;
  min-width: 0;
}
.admin-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.admin-topbar h1 { font-size: 24px; font-weight: 800; color: var(--ocean-900); }
.admin-topbar .lang-switch { background: #fff; border: 1px solid var(--gray-200); }
.admin-content { display: none; }
.admin-content.active { display: block; }

/* Admin Dashboard */
.admin-stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; margin-bottom: 32px; }
.admin-stat-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--gray-200);
}
.admin-stat-card .stat-icon { font-size: 32px; margin-bottom: 12px; }
.admin-stat-card .stat-num { font-size: 28px; font-weight: 900; color: var(--ocean-900); }
.admin-stat-card .stat-label { font-size: 13px; color: var(--gray-400); margin-top: 4px; }

/* Admin Table */
.admin-table-wrapper {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
  overflow: hidden;
}
.admin-table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-200);
}
.admin-table-header h2 { font-size: 18px; font-weight: 700; color: var(--ocean-900); }
.admin-table { width: 100%; }
.admin-table th {
  text-align: left;
  padding: 12px 24px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-400);
  border-bottom: 1px solid var(--gray-200);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.admin-table td {
  padding: 16px 24px;
  font-size: 14px;
  color: var(--gray-700);
  border-bottom: 1px solid var(--gray-100);
}
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--gray-50); }
.admin-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
}
.admin-badge-featured { background: #fef3c7; color: #92400e; }
.admin-badge-normal { background: var(--gray-100); color: var(--gray-500); }
.admin-badge-active { background: #d1fae5; color: #065f46; }
.admin-badge-inactive { background: #fee2e2; color: #991b1b; }
.admin-badge-unread { background: #dbeafe; color: #1e40af; }

.admin-action-btns { display: flex; gap: 8px; }
.admin-action-btn {
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
}
.admin-edit-btn { background: var(--ocean-100); color: var(--ocean-600); }
.admin-edit-btn:hover { background: var(--ocean-200); }
.admin-delete-btn { background: #fee2e2; color: #dc2626; }
.admin-delete-btn:hover { background: #fecaca; }
.admin-add-btn {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  background: var(--ocean-600);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.admin-add-btn:hover { background: var(--ocean-500); }

/* Admin Modal */
.admin-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 24px;
  overflow-y: auto;
}
.admin-modal-overlay.active { display: flex; }
.admin-modal {
  background: #fff;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
}
.admin-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px;
  border-bottom: 1px solid var(--gray-200);
}
.admin-modal-header h2 { font-size: 20px; font-weight: 700; color: var(--ocean-900); }
.admin-modal-close {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--gray-400);
  transition: var(--transition);
}
.admin-modal-close:hover { background: var(--gray-100); color: var(--gray-700); }
.admin-modal-body { padding: 24px; }
.admin-modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding: 16px 24px;
  border-top: 1px solid var(--gray-200);
}
.admin-modal-cancel {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  background: var(--gray-100);
  color: var(--gray-600);
  font-size: 14px;
  font-weight: 600;
}
.admin-modal-save {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  background: var(--ocean-600);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}

/* Admin Content Editor */
.admin-content-editor {
  display: grid;
  grid-template-columns: 200px 1fr 1fr;
  gap: 1px;
  background: var(--gray-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--gray-200);
}
.admin-content-editor-section {
  background: var(--ocean-50);
  padding: 12px 16px;
  font-weight: 600;
  font-size: 13px;
  color: var(--ocean-700);
}
.admin-content-editor-label {
  background: #fff;
  padding: 12px 16px;
  font-size: 13px;
  color: var(--gray-600);
  font-weight: 500;
}
.admin-content-editor-input {
  background: #fff;
  border: none;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--gray-800);
  font-family: inherit;
  outline: none;
}
.admin-content-editor-input:focus { background: var(--ocean-50); }

/* Admin Mobile */
.admin-sidebar-toggle {
  display: none;
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 200;
  width: 40px; height: 40px;
  border-radius: 8px;
  background: var(--ocean-900);
  color: #fff;
  font-size: 20px;
  align-items: center;
  justify-content: center;
}

@media (max-width: 1024px) {
  .admin-stats { grid-template-columns: repeat(2, 1fr); }
  .admin-content-editor { grid-template-columns: 1fr; }
  .admin-content-editor-section,
  .admin-content-editor-label,
  .admin-content-editor-input {
    border-bottom: 1px solid var(--gray-200);
  }
}

@media (max-width: 768px) {
  .admin-sidebar {
    transform: translateX(-100%);
    z-index: 200;
  }
  .admin-sidebar.open { transform: translateX(0); }
  .admin-main { margin-left: 0; padding: 16px; }
  .admin-topbar { padding-top: 48px; }
  .admin-sidebar-toggle { display: flex; }
  .admin-table { display: block; overflow-x: auto; }
  .admin-stats { grid-template-columns: 1fr; }
}