/* ============================================
   5分商服® (5FSCS) — 湛蓝科技风格官网样式表
   设计参考：现代科技感 + 专业信任感
   主色：科技蓝 #0EA5E9 | 辅助：深蓝 #0F172A | 点缀：青绿 #10B981
   ============================================ */

/* === CSS Variables === */
:root {
  /* 湛蓝色科技风格 - 参考Logo深紫蓝调 */
  --primary: #1E3A8A;
  --primary-dark: #172554;
  --primary-light: #3B82F6;
  --primary-bg: #EFF6FF;
  --accent: #06B6D4;
  --accent-glow: rgba(6, 182, 212, 0.4);
  --dark: #0F172A;
  --dark-lighter: #1E293B;
  --text-dark: #0F172A;
  --text-body: #334155;
  --text-light: #64748B;
  --border: #CBD5E1;
  --bg-gray: #F8FAFC;
  --white: #fff;
  --font-display: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Microsoft YaHei', sans-serif;
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--text-body);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; }
button { font-family: inherit; cursor: pointer; border: none; outline: none; }

/* === Container === */
.tj-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.tj-section { padding: 80px 0; }
.tj-section-gray { background: var(--bg-gray); }
.tj-section-dark { background: var(--dark); color: #CBD5E1; }
.tj-section-pain {
  background: linear-gradient(180deg, #F0F9FF 0%, #E0F2FE 50%, #F0F9FF 100%);
  padding: 80px 0;
}

/* ==================== 顶部导航栏 ==================== */
.tj-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 9999;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  transition: all 0.3s;
}
.tj-header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.08); }
.tj-header-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  height: 64px; display: flex; align-items: center; justify-content: space-between;
}
/* 品牌区域 - Logo+口号 */
.tj-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
/* Logo - 蓝底白字: 5分商服 */
.tj-logo { 
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--primary);
  padding: 8px 16px;
  border-radius: 6px;
  flex-shrink: 0;
}
.tj-logo-text {
  font-size: 20px; font-weight: 700; color: #fff;
  letter-spacing: 2px;
}
/* 品牌定位口号 */
.tj-slogan {
  font-size: 13px;
  color: var(--text-light);
  font-weight: 500;
  white-space: nowrap;
}
@media (max-width: 768px) {
  .tj-slogan { display: none; }
}
.tj-nav { display: flex; align-items: center; gap: 32px; }
.tj-nav-link {
  font-size: 15px; color: var(--text-body); font-weight: 500;
  transition: color 0.2s; position: relative;
}
.tj-nav-link:hover { color: var(--primary); }
.tj-nav-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark)) !important; color: #fff !important;
  padding: 8px 20px; border-radius: 6px; font-size: 14px; font-weight: 600;
  box-shadow: 0 2px 10px rgba(14,165,233,0.3);
}
.tj-nav-cta:hover { background: var(--primary-dark) !important; transform: translateY(-1px); }

/* Mobile */
.tj-mobile-btn { display: none; flex-direction: column; gap: 5px; padding: 8px; background: none; }
.tj-mobile-btn span { display: block; width: 22px; height: 2px; background: var(--dark); border-radius: 2px; transition: 0.3s; }
.tj-mobile-menu {
  display: none; position: absolute; top: 100%; left: 0; right: 0;
  background: #fff; border-top: 1px solid var(--border);
  padding: 16px 24px; box-shadow: 0 8px 30px rgba(0,0,0,0.1);
}
.tj-mobile-menu.open { display: block; }
.tj-mobile-menu a {
  display: block; padding: 12px 0; font-size: 15px; color: var(--text-body);
  border-bottom: 1px solid var(--border);
}
.tj-mobile-menu a:last-child { border-bottom: none; }

/* ==================== 1. Hero 大图区 ==================== */
.tj-hero {
  position: relative; min-height: 600px; margin-top: 64px;
  overflow: hidden;
}
.tj-hero-bg {
  position: absolute; inset: 0;
  background:
    linear-gradient(135deg, #0F172A 0%, #1E3A8A 50%, #0EA5E9 100%);
  z-index: 0;
}
/* 科技网格背景 */
.tj-hero-bg::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}
/* 光晕效果 */
.tj-hero-bg::after {
  content: '';
  position: absolute; top: -20%; right: -10%;
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(6,182,212,0.25) 0%, transparent 60%);
  filter: blur(40px);
}
.tj-hero-inner {
  position: relative; z-index: 1;
  max-width: 1200px; margin: 0 auto; padding: 100px 24px 80px;
  display: grid; grid-template-columns: 1fr 380px; gap: 48px; align-items: center;
}
.tj-hero-left { color: #fff; }
.tj-hero-title {
  font-size: clamp(32px, 5vw, 52px); font-weight: 700;
  line-height: 1.25; margin-bottom: 20px;
  font-family: var(--font-display);
}
.tj-hero-title-sub {
  font-size: clamp(24px, 4vw, 38px); font-weight: 700;
  color: var(--accent); display: block; margin-top: 8px;
  text-shadow: 0 0 30px rgba(6,182,212,0.5);
}
.tj-hero-desc {
  font-size: 17px; line-height: 1.8; color: rgba(255,255,255,0.75);
  margin-bottom: 36px; max-width: 480px;
}
.tj-hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* Hero 右侧卡片 */
.tj-hero-right { display: flex; justify-content: center; }
.tj-hero-card-wrap { perspective: 800px; }
.tj-hero-card {
  background: rgba(255,255,255,0.95); backdrop-filter: blur(10px);
  border-radius: 16px; padding: 32px 28px; text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3), 0 0 0 1px rgba(255,255,255,0.1);
  min-width: 280px;
}
.tj-hero-card-img {
  width: 90px; height: 90px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-bg), #BAE6FD);
  display: flex; align-items: center; justify-content: center;
  font-size: 42px; margin: 0 auto 16px;
  border: 3px solid rgba(14,165,233,0.2);
}
.tj-hero-card-name { font-size: 17px; font-weight: 600; color: var(--dark); margin-bottom: 4px; }
.tj-hero-card-tip { font-size: 13px; color: var(--text-light); margin-bottom: 20px; }

/* 右侧悬浮工具栏 */
.tj-sidebar {
  position: fixed; right: 16px; top: 50%; transform: translateY(-50%);
  z-index: 9998; display: flex; flex-direction: column; gap: 8px;
}
.tj-sidebar-item {
  width: 56px; height: 56px; border-radius: 12px;
  background: #fff; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  transition: all 0.3s; cursor: pointer; color: var(--text-body);
  font-size: 11px; gap: 2px;
}
.tj-sidebar-item:hover { background: var(--primary); color: #fff; transform: scale(1.05); }
.tj-sidebar-icon { font-size: 20px; line-height: 1; }
.tj-sidebar-text { font-size: 10px; white-space: nowrap; }

/* ==================== Buttons ==================== */
.tj-btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 28px; border-radius: 8px; font-size: 15px; font-weight: 600;
  transition: all 0.25s; cursor: pointer; white-space: nowrap;
}
.tj-btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff;
  box-shadow: 0 4px 14px rgba(30,58,138,0.35), 0 0 20px rgba(6,182,212,0.2);
}
.tj-btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(30,58,138,0.4), 0 0 30px rgba(6,182,212,0.3); }
.tj-btn-outline {
  background: transparent; color: #fff;
  border: 2px solid rgba(255,255,255,0.5);
}
.tj-btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.1); }
.tj-btn-white { background: #fff; color: var(--primary); }
.tj-btn-white:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.15); }
.tj-btn-lg { padding: 16px 40px; font-size: 16px; border-radius: 10px; }
.tj-btn-sm { padding: 8px 20px; font-size: 13px; }
.tj-btn-block { width: 100%; }

/* ==================== Section Titles ==================== */
.tj-section-title {
  font-size: clamp(28px, 4vw, 40px); font-weight: 700;
  color: var(--dark); text-align: center; margin-bottom: 48px;
  font-family: var(--font-display);
}
.tj-section-title-sm {
  font-size: 22px; font-weight: 700; color: var(--dark);
  text-align: center; margin-bottom: 8px;
}
.tj-section-sub {
  font-size: 15px; color: var(--text-light); text-align: center; margin-bottom: 40px;
}
.tj-section-title-center {
  font-size: clamp(26px, 4vw, 38px); font-weight: 700;
  color: var(--dark); text-align: center; margin-bottom: 48px;
  font-family: var(--font-display);
}
.tj-section-title-light {
  font-size: clamp(26px, 4vw, 38px); font-weight: 700;
  color: #fff; text-align: center; margin-bottom: 48px;
  font-family: var(--font-display);
}
.tj-section-title-pain {
  font-size: clamp(26px, 4vw, 36px); font-weight: 700;
  color: var(--dark); text-align: center; margin-bottom: 48px;
  line-height: 1.4; font-family: var(--font-display);
}

/* ==================== 2. 服务内容 Tab ==================== */
.tj-tabs {
  display: flex; justify-content: center; gap: 0;
  margin-bottom: 40px; border-bottom: 2px solid var(--border);
}
.tj-tab {
  padding: 14px 40px; font-size: 17px; font-weight: 600; color: var(--text-body);
  background: none; border: none; cursor: pointer; position: relative;
  transition: all 0.3s;
}
.tj-tab.active { color: var(--primary); }
.tj-tab::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0;
  height: 3px; background: var(--primary);
  transform: scaleX(0); transition: transform 0.3s;
}
.tj-tab.active::after { transform: scaleX(1); }
.tj-tab:hover { color: var(--primary); }

.tj-tab-content { display: none; }
.tj-tab-content.active { display: block; animation: fadeInUp 0.4s ease; }

.tj-service-detail {
  display: grid; grid-template-columns: 1fr 320px; gap: 48px; align-items: start;
}
.tj-service-info h3 {
  font-size: 26px; font-weight: 700; color: var(--dark);
  margin-bottom: 8px; font-family: var(--font-display);
}
.tj-service-slogan {
  font-size: 16px; color: var(--text-light); margin-bottom: 24px;
  padding-left: 16px; border-left: 3px solid var(--primary);
}
.tj-service-list li {
  padding: 10px 0; font-size: 15px; color: var(--text-body);
  border-bottom: 1px dashed var(--border);
  line-height: 1.7;
}
.tj-service-list li strong { color: var(--dark); }
.tj-service-img-placeholder {
  width: 100%; height: 220px; border-radius: 12px;
  background: linear-gradient(135deg, var(--primary-bg), #BAE6FD);
  display: flex; align-items: center; justify-content: center;
  font-size: 72px; margin-bottom: 20px;
}

/* ==================== 3. 平台承接 ==================== */
.tj-platforms {
  display: flex; justify-content: center; gap: 32px; flex-wrap: wrap;
}
.tj-platform-item {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 20px 28px; background: #fff; border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  transition: all 0.3s; min-width: 110px;
}
.tj-platform-item:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.1); }
.tj-platform-logo {
  width: 56px; height: 56px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
}
.tj-platform-douyin { background: #000; }
.tj-platform-wechat { background: #07C160; }
.tj-platform-taobao { background: #FF5000; }
.tj-platform-jd { background: #E3393C; }
.tj-platform-pdd { background: #E02E24; }
.tj-platform-kuaishou { background: #FF4906; }
.tj-platform-item span { font-size: 14px; font-weight: 600; color: var(--dark); }

/* ==================== 4. 痛点问题 ==================== */
.tj-pain-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  max-width: 720px; margin: 0 auto;
}
.tj-pain-item {
  display: flex; align-items: center; gap: 12px;
  padding: 18px 24px; background: rgba(255,255,255,0.85);
  border-radius: 50px; font-size: 15px; font-weight: 600; color: var(--dark);
  box-shadow: 0 2px 10px rgba(0,0,0,0.06);
  transition: all 0.3s; cursor: default;
}
.tj-pain-item:hover {
  background: var(--primary); color: #fff;
  transform: translateX(4px); box-shadow: 0 4px 16px rgba(14,165,233,0.3);
}
.tj-pain-num {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; flex-shrink: 0;
}
.tj-pain-item:hover .tj-pain-num { background: #fff; color: var(--primary); }

/* ==================== 5. 为什么选择我们 ==================== */
.tj-why-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 28px;
}
.tj-why-card {
  background: #fff; border-radius: 12px; overflow: hidden;
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
  transition: all 0.3s;
}
.tj-why-card:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(0,0,0,0.12); }
.tj-why-img {
  height: 180px; overflow: hidden;
}
.tj-why-img-placeholder {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 56px;
}
.img-team { background: linear-gradient(135deg, #E0F2FE, #BAE6FD); }
.img-thumb { background: linear-gradient(135deg, #ECFDF5, #D1FAE5); }
.img-check { background: linear-gradient(135deg, #F0FDF4, #DCFCE7); }
.img-clock { background: linear-gradient(135deg, #EFF6FF, #DBEAFE); }
.tj-why-card h3 {
  font-size: 18px; font-weight: 700; color: var(--dark);
  padding: 20px 24px 10px; font-family: var(--font-display);
}
.tj-why-card p {
  font-size: 14px; color: var(--text-light); line-height: 1.7;
  padding: 0 24px 24px;
}

/* ==================== 6. 我们的优势 ==================== */
.tj-strength-block { margin-bottom: 48px; }
.tj-strength-block:last-child { margin-bottom: 0; }
.tj-strength-title {
  font-size: 22px; font-weight: 700; color: #fff;
  margin-bottom: 24px; font-family: var(--font-display);
  display: flex; align-items: center; gap: 12px;
}
.tj-strength-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 8px;
  background: var(--primary); color: #fff; font-size: 18px; font-weight: 700;
}
.tj-strength-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.tj-strength-item {
  background: rgba(255,255,255,0.06); border-radius: 12px;
  padding: 24px; transition: all 0.3s;
  border: 1px solid rgba(255,255,255,0.08);
}
.tj-strength-item:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.15);
  transform: translateY(-2px);
}
.tj-strength-item h4 {
  font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 8px;
}
.tj-strength-item p {
  font-size: 13px; color: rgba(255,255,255,0.55); line-height: 1.7;
}
.tj-strength-icon { font-size: 28px; margin-bottom: 8px; }

/* ==================== 7. 真实数据 ==================== */
.tj-data-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
}
.tj-data-item {
  text-align: center; padding: 32px 16px;
}
.tj-data-num {
  font-size: 56px; font-weight: 800; color: var(--primary);
  font-family: var(--font-display); line-height: 1; display: inline;
}
.tj-data-unit {
  font-size: 24px; font-weight: 700; color: var(--primary);
  font-family: var(--font-display);
}
.tj-data-label {
  font-size: 15px; color: var(--text-light); margin-top: 8px; font-weight: 500;
}

/* ==================== 8. 客户案例 ==================== */
.tj-cases-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.tj-case-card {
  background: #fff; border-radius: 12px; overflow: hidden;
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
  transition: all 0.3s;
}
.tj-case-card:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(0,0,0,0.12); }
.tj-case-tag {
  display: inline-block; background: var(--primary); color: #fff;
  font-size: 12px; font-weight: 600; padding: 4px 14px; border-radius: 20px;
  margin: 20px 20px 0;
}
.tj-case-card h3 {
  font-size: 18px; font-weight: 700; color: var(--dark);
  padding: 12px 20px 4px;
}
.tj-case-meta { font-size: 13px; color: var(--text-light); padding: 0 20px 16px; }
.tj-case-metrics {
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px;
  padding: 0 20px; margin-bottom: 16px;
}
.tj-case-metric {
  text-align: center; padding: 10px 4px;
  background: var(--bg-gray); border-radius: 8px;
}
.tj-case-from { font-size: 13px; color: var(--text-light); text-decoration: line-through; display: block; }
.tj-case-arrow { font-size: 12px; color: var(--primary); font-weight: 700; }
.tj-case-to { font-size: 18px; font-weight: 700; color: var(--primary); font-family: var(--font-display); display: block; }
.tj-case-metric small { font-size: 11px; color: var(--text-light); display: block; margin-top: 2px; }
.tj-case-result {
  text-align: center; padding: 14px 20px;
  background: linear-gradient(135deg, var(--primary-bg), #DBEAFE);
  font-size: 14px; font-weight: 600; color: var(--primary-dark);
  border-top: 1px solid rgba(30,58,138,0.1);
}

/* ==================== 9. 底部CTA ==================== */
.tj-cta {
  background: linear-gradient(135deg, #1E3A8A 0%, #0F172A 50%, #1E40AF 100%);
  padding: 72px 0; text-align: center; position: relative; overflow: hidden;
}
.tj-cta::before {
  content: ''; position: absolute; top: -50%; right: -10%;
  width: 500px; height: 500px; border-radius: 50%;
  background: radial-gradient(circle, rgba(6,182,212,0.25) 0%, transparent 60%);
  filter: blur(60px);
}
.tj-cta::after {
  content: ''; position: absolute; bottom: -30%; left: -5%;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, transparent 60%);
  filter: blur(50px);
}
.tj-cta h2 { font-size: clamp(24px, 4vw, 34px); color: #fff; margin-bottom: 12px; font-family: var(--font-display); }
.tj-cta p { font-size: 17px; color: rgba(255,255,255,0.8); margin-bottom: 32px; }

/* ==================== 10. 咨询表单 ==================== */
.tj-form {
  max-width: 600px; margin: 0 auto;
  background: #fff; border-radius: 16px; padding: 40px;
  box-shadow: 0 4px 30px rgba(0,0,0,0.08);
}
.tj-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.tj-form-group { margin-bottom: 16px; }
.tj-form-group label {
  display: block; font-size: 14px; font-weight: 600; color: var(--dark);
  margin-bottom: 6px;
}
.tj-form-group label span { color: var(--primary); }
.tj-form-group input,
.tj-form-group select,
.tj-form-group textarea {
  width: 100%; padding: 12px 16px; border: 1.5px solid var(--border);
  border-radius: 8px; font-size: 15px; font-family: inherit;
  color: var(--dark); background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s; outline: none;
}
.tj-form-group input:focus,
.tj-form-group select:focus,
.tj-form-group textarea:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(30,58,138,0.1);
}
.tj-form-group textarea { resize: vertical; min-height: 80px; }
.tj-form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center; background-size: 18px;
  padding-right: 40px;
}
.tj-form-note {
  font-size: 12px; color: var(--text-light); text-align: center; margin-top: 12px;
}
.tj-form-success { text-align: center; padding: 48px 24px; }
.tj-form-success-icon {
  width: 64px; height: 64px; border-radius: 50%;
  background: rgba(16,185,129,0.1); display: flex; align-items: center;
  justify-content: center; font-size: 32px; margin: 0 auto 16px;
}
.tj-form-success h3 { font-size: 22px; color: var(--dark); margin-bottom: 8px; }
.tj-form-success p { font-size: 15px; color: var(--text-light); }

/* ==================== Footer ==================== */
.tj-footer { background: var(--dark); color: rgba(255,255,255,0.5); padding-top: 48px; }
.tj-footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.tj-footer-top {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: 28px; border-bottom: 1px solid rgba(255,255,255,0.08);
  flex-wrap: wrap; gap: 20px;
}
.tj-footer-logo .tj-logo-text { 
  background: var(--primary); 
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 16px; font-weight: 700; color: #fff;
  letter-spacing: 1px;
}
.tj-footer-nav { display: flex; gap: 28px; flex-wrap: wrap; }
.tj-footer-nav a { font-size: 14px; color: rgba(255,255,255,0.5); transition: color 0.2s; }
.tj-footer-nav a:hover { color: #fff; }
.tj-footer-contact { text-align: right; }
.tj-footer-phone { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.tj-footer-email { font-size: 14px; }

.tj-footer-middle {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
  padding: 36px 0; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.tj-footer-col h4 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 14px; }
.tj-footer-col a {
  display: block; font-size: 13px; color: rgba(255,255,255,0.45);
  padding: 4px 0; transition: color 0.2s;
}
.tj-footer-col a:hover { color: var(--primary-light); }

.tj-footer-bottom { padding: 20px 0; text-align: center; }
.tj-footer-bottom p { font-size: 12px; margin-bottom: 6px; }
.tj-footer-keywords { font-size: 12px; color: rgba(255,255,255,0.25); }

/* ==================== Animations ==================== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ==================== Responsive ==================== */
@media (max-width: 1024px) {
  .tj-hero-inner { grid-template-columns: 1fr; text-align: center; }
  .tj-hero-desc { margin: 0 auto 36px; }
  .tj-hero-actions { justify-content: center; }
  .tj-hero-right { margin-top: 20px; }
  .tj-service-detail { grid-template-columns: 1fr; }
  .tj-service-img { max-width: 360px; margin: 0 auto; }
  .tj-why-grid { grid-template-columns: 1fr 1fr; }
  .tj-strength-grid { grid-template-columns: 1fr 1fr; }
  .tj-cases-grid { grid-template-columns: 1fr 1fr; }
  .tj-data-grid { grid-template-columns: 1fr 1fr; }
  .tj-footer-middle { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .tj-nav { display: none; }
  .tj-mobile-btn { display: flex; }
  .tj-hero { min-height: 500px; }
  .tj-hero-inner { padding: 60px 24px 50px; }
  .tj-section { padding: 56px 0; }
  .tj-tabs { flex-wrap: wrap; }
  .tj-tab { padding: 10px 24px; font-size: 15px; }
  .tj-why-grid { grid-template-columns: 1fr; }
  .tj-strength-grid { grid-template-columns: 1fr; }
  .tj-cases-grid { grid-template-columns: 1fr; }
  .tj-data-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .tj-pain-grid { grid-template-columns: 1fr; }
  .tj-pain-item { border-radius: 12px; }
  .tj-form { padding: 28px 20px; }
  .tj-form-row { grid-template-columns: 1fr; }
  .tj-footer-top { flex-direction: column; text-align: center; }
  .tj-footer-contact { text-align: center; }
  .tj-footer-middle { grid-template-columns: 1fr 1fr; gap: 24px; }
  .tj-sidebar { display: none; }
  .tj-header-inner { height: 56px; }
  .tj-hero { margin-top: 56px; }
}

@media (max-width: 480px) {
  .tj-hero-actions { flex-direction: column; }
  .tj-hero-actions .tj-btn { width: 100%; }
  .tj-data-grid { grid-template-columns: 1fr; }
  .tj-data-num { font-size: 44px; }
  .tj-footer-middle { grid-template-columns: 1fr; }
  .tj-platforms { gap: 16px; }
  .tj-platform-item { padding: 14px 20px; min-width: 90px; }
  .tj-platform-logo { width: 44px; height: 44px; font-size: 22px; }
}