/* ========================================
   网约科技门户 - 全局样式
   高端大气上档次 · 科技感设计
   ======================================== */

/* ===== CSS 变量 ===== */
:root {
  --primary: #0066ff;
  --primary-dark: #0052cc;
  --primary-light: #3385ff;
  --secondary: #00d4ff;
  --accent: #ff6b35;
  --success: #00c853;
  --warning: #ffa000;
  --danger: #ff1744;
  
  --dark: #0a0e27;
  --dark-2: #1a1f3a;
  --dark-3: #252b48;
  --gray-900: #1a1a2e;
  --gray-800: #2d2d44;
  --gray-700: #4a4a6a;
  --gray-600: #6b6b8a;
  --gray-500: #8a8aaa;
  --gray-400: #b0b0cc;
  --gray-300: #d0d0e0;
  --gray-200: #e8e8f0;
  --gray-100: #f5f5fa;
  --white: #ffffff;
  
  --gradient-primary: linear-gradient(135deg, #0066ff 0%, #00d4ff 100%);
  --gradient-dark: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 100%);
  --gradient-accent: linear-gradient(135deg, #ff6b35 0%, #ff8a5b 100%);
  --gradient-gold: linear-gradient(135deg, #ffd700 0%, #ffaa00 100%);
  --gradient-tech: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-green: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
  --gradient-sunset: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-ocean: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.2);
  --shadow-glow: 0 0 30px rgba(0, 102, 255, 0.3);
  --shadow-glow-cyan: 0 0 30px rgba(0, 212, 255, 0.4);
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  --container-max: 1280px;
  --header-height: 72px;
}

/* ===== 重置与基础 ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  line-height: 1.6;
  color: var(--gray-900);
  background: var(--gray-100);
  overflow-x: hidden;
}

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

ul, ol { list-style: none; }

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

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

.container-fluid {
  width: 100%;
  padding: 0 24px;
}

/* ===== 顶部公告栏 ===== */
.top-bar {
  background: var(--dark);
  color: var(--gray-400);
  font-size: 13px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.top-bar-left, .top-bar-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.top-bar a:hover {
  color: var(--secondary);
}

.top-bar .hot-line {
  color: var(--accent);
  font-weight: 600;
}

/* ===== 主导航 ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

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

.logo-icon {
  width: 44px;
  height: 44px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 20px;
  box-shadow: var(--shadow-glow);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-text h1 {
  font-size: 20px;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-text span {
  font-size: 11px;
  color: var(--gray-500);
  letter-spacing: 1px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  font-weight: 500;
  color: var(--gray-700);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  font-size: 15px;
}

.nav-link:hover, .nav-item:hover .nav-link {
  color: var(--primary);
  background: rgba(0, 102, 255, 0.08);
}

.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

.nav-link .arrow {
  font-size: 10px;
  transition: var(--transition-fast);
}

.nav-item:hover .nav-link .arrow {
  transform: rotate(180deg);
}

/* 下拉菜单 */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  min-width: 240px;
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  padding: 12px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
  border: 1px solid var(--gray-200);
  z-index: 100;
}

.nav-item:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.dropdown-item:hover {
  background: var(--gray-100);
  transform: translateX(4px);
}

.dropdown-item-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 16px;
  flex-shrink: 0;
}

.dropdown-item-text {
  display: flex;
  flex-direction: column;
}

.dropdown-item-text strong {
  font-size: 14px;
  color: var(--gray-900);
  font-weight: 600;
}

.dropdown-item-text span {
  font-size: 12px;
  color: var(--gray-500);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition-normal);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 14px rgba(0, 102, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 102, 255, 0.4);
}

.btn-secondary {
  background: white;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

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

.btn-accent {
  background: var(--gradient-accent);
  color: white;
  box-shadow: 0 4px 14px rgba(255, 107, 53, 0.3);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
}

/* ===== Hero 轮播区 ===== */
.hero {
  position: relative;
  background: var(--gradient-dark);
  color: white;
  overflow: hidden;
  padding: 80px 0 100px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0, 102, 255, 0.3) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content h2 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero-content h2 .highlight {
  background: var(--gradient-ocean);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content .subtitle {
  font-size: 18px;
  color: var(--gray-400);
  margin-bottom: 32px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  gap: 40px;
}

.stat-item {
  text-align: left;
}

.stat-item .number {
  font-size: 32px;
  font-weight: 800;
  background: var(--gradient-ocean);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-item .label {
  font-size: 13px;
  color: var(--gray-400);
  margin-top: 4px;
}

.hero-visual {
  position: relative;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: 24px;
  width: 200px;
  animation: float 6s ease-in-out infinite;
}

.hero-card:nth-child(1) {
  top: 20px;
  left: 0;
  animation-delay: 0s;
}

.hero-card:nth-child(2) {
  top: 80px;
  right: 20px;
  animation-delay: 1s;
}

.hero-card:nth-child(3) {
  bottom: 60px;
  left: 40px;
  animation-delay: 2s;
}

.hero-card:nth-child(4) {
  bottom: 20px;
  right: 0;
  animation-delay: 1.5s;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

.hero-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 12px;
}

.hero-card h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.hero-card p {
  font-size: 12px;
  color: var(--gray-400);
}

/* ===== 快捷入口 ===== */
.quick-entry {
  margin-top: -50px;
  position: relative;
  z-index: 10;
}

.quick-entry-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 16px;
  background: white;
  padding: 30px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.quick-entry-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 16px 8px;
  border-radius: var(--radius-md);
  transition: var(--transition-normal);
  cursor: pointer;
}

.quick-entry-item:hover {
  background: var(--gray-100);
  transform: translateY(-4px);
}

.quick-entry-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  transition: var(--transition-normal);
}

.quick-entry-item:hover .quick-entry-icon {
  transform: scale(1.1);
}

.quick-entry-item span {
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-700);
}

/* ===== 区块通用 ===== */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--gray-900);
}

.section-title .highlight {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 16px;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== 产品卡片 ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.product-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  border: 1px solid var(--gray-200);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.product-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  z-index: 1;
}

.badge-hot {
  background: var(--gradient-accent);
  color: white;
}

.badge-new {
  background: var(--gradient-green);
  color: white;
}

.badge-vip {
  background: var(--gradient-gold);
  color: var(--dark);
}

.product-image {
  position: relative;
  height: 180px;
  background: var(--gradient-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  overflow: hidden;
}

.product-image::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, rgba(0, 102, 255, 0.1), rgba(0, 212, 255, 0.1));
}

.product-info {
  padding: 20px;
}

.product-info h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--gray-900);
}

.product-info p {
  font-size: 13px;
  color: var(--gray-500);
  margin-bottom: 16px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.product-tag {
  padding: 3px 8px;
  background: var(--gray-100);
  border-radius: 4px;
  font-size: 11px;
  color: var(--gray-600);
}

.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--gray-100);
}

.product-price {
  font-size: 18px;
  font-weight: 800;
  color: var(--accent);
}

.product-price .unit {
  font-size: 12px;
  font-weight: 400;
  color: var(--gray-500);
}

.product-action {
  padding: 6px 14px;
  background: var(--gradient-primary);
  color: white;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
}

/* ===== 工具中心 ===== */
.tools-section {
  background: var(--gradient-dark);
  color: white;
  position: relative;
  overflow: hidden;
}

.tools-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 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='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.tools-section .section-title {
  color: white;
}

.tools-section .section-subtitle {
  color: var(--gray-400);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
  position: relative;
  z-index: 1;
}

.tool-card {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition-normal);
  cursor: pointer;
}

.tool-card:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-6px);
  border-color: var(--secondary);
  box-shadow: var(--shadow-glow-cyan);
}

.tool-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  border-radius: var(--radius-md);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
}

.tool-card h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
}

.tool-card p {
  font-size: 12px;
  color: var(--gray-400);
  line-height: 1.4;
}

/* ===== 资讯中心 ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  border: 1px solid var(--gray-200);
}

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

.news-image {
  height: 200px;
  background: var(--gradient-tech);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  position: relative;
}

.news-category {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 4px 12px;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  border-radius: var(--radius-full);
  font-size: 12px;
}

.news-content {
  padding: 20px;
}

.news-content h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
  color: var(--gray-900);
}

.news-content p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--gray-400);
}

/* ===== 合作伙伴 ===== */
.partners {
  background: white;
  padding: 60px 0;
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

.partners-title {
  text-align: center;
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 30px;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.partners-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px;
  align-items: center;
}

.partner-logo {
  padding: 12px 24px;
  background: var(--gray-100);
  border-radius: var(--radius-md);
  font-weight: 700;
  color: var(--gray-600);
  font-size: 14px;
  transition: var(--transition-fast);
}

.partner-logo:hover {
  background: var(--primary);
  color: white;
}

/* ===== CTA 区域 ===== */
.cta-section {
  background: var(--gradient-primary);
  padding: 80px 0;
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-section .container {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 18px;
  opacity: 0.9;
  margin-bottom: 32px;
}

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

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

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.btn-outline-white {
  border: 2px solid white;
  color: white;
}

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

/* ===== 页脚 ===== */
.footer {
  background: var(--dark);
  color: var(--gray-400);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.8;
}

.footer-contact-info {
  margin-top: 20px;
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 13px;
}

.footer-contact-item .icon {
  width: 28px;
  height: 28px;
  background: rgba(0, 102, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.footer-column h4 {
  color: white;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
}

.footer-column ul li {
  margin-bottom: 10px;
}

.footer-column ul li a {
  font-size: 14px;
  color: var(--gray-400);
  transition: var(--transition-fast);
}

.footer-column ul li a:hover {
  color: var(--secondary);
  padding-left: 4px;
}

.footer-links-bar {
  background: rgba(0, 0, 0, 0.3);
  padding: 20px 0;
  margin-top: 40px;
}

.footer-links-bar .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.footer-link-item {
  font-size: 13px;
  color: var(--gray-400);
}

.footer-link-item a:hover {
  color: var(--secondary);
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom .highlight-links {
  margin-bottom: 12px;
}

.footer-bottom .highlight-links a {
  color: var(--secondary);
  margin: 0 8px;
}

.footer-bottom .highlight-links a:hover {
  text-decoration: underline;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  background: white;
  border-bottom: 1px solid var(--gray-200);
  padding: 16px 0;
  font-size: 14px;
}

.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--gray-500);
}

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

.breadcrumb .current {
  color: var(--gray-900);
  font-weight: 500;
}

/* ===== 页面头部 ===== */
.page-header {
  background: var(--gradient-dark);
  color: white;
  padding: 60px 0;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 102, 255, 0.3) 0%, transparent 70%);
  border-radius: 50%;
}

.page-header .container {
  position: relative;
  z-index: 1;
}

.page-header h1 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
}

.page-header p {
  font-size: 16px;
  color: var(--gray-400);
  max-width: 600px;
}

/* ===== 侧边栏 ===== */
.sidebar-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 30px;
  padding: 40px 0;
}

.sidebar {
  position: sticky;
  top: 100px;
  align-self: start;
}

.sidebar-widget {
  background: white;
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
}

.sidebar-widget h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary);
  display: inline-block;
}

.sidebar-nav li {
  margin-bottom: 4px;
}

.sidebar-nav a {
  display: block;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--gray-700);
  transition: var(--transition-fast);
}

.sidebar-nav a:hover, .sidebar-nav a.active {
  background: rgba(0, 102, 255, 0.08);
  color: var(--primary);
  font-weight: 500;
}

.sidebar-nav a.active {
  border-left: 3px solid var(--primary);
  padding-left: 11px;
}

/* ===== 工具计算器样式 ===== */
.calculator-box {
  background: white;
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-md);
  margin-bottom: 30px;
}

.calculator-box h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.calculator-box h3::before {
  content: '';
  width: 4px;
  height: 24px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 8px;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 15px;
  transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.result-box {
  margin-top: 24px;
  padding: 24px;
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.08) 0%, rgba(0, 212, 255, 0.08) 100%);
  border-radius: var(--radius-md);
  border: 1px solid rgba(0, 102, 255, 0.2);
}

.result-box h4 {
  font-size: 14px;
  color: var(--gray-600);
  margin-bottom: 8px;
}

.result-value {
  font-size: 32px;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-value .unit {
  font-size: 16px;
  font-weight: 500;
}

/* ===== 返回顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition-normal);
  z-index: 999;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .tools-grid { grid-template-columns: repeat(4, 1fr); }
  .quick-entry-grid { grid-template-columns: repeat(4, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
}

@media (max-width: 768px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .tools-grid { grid-template-columns: repeat(3, 1fr); }
  .news-grid { grid-template-columns: 1fr; }
  .quick-entry-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .sidebar-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .hero-content h2 { font-size: 32px; }
  .section-title { font-size: 28px; }
  .hero-stats { flex-wrap: wrap; gap: 20px; }
  .main-nav { display: none; }
  .form-row { grid-template-columns: 1fr; }
}

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

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease forwards;
}

/* 滚动显示 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 分隔装饰 ===== */
.divider {
  width: 60px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 2px;
  margin: 16px auto;
}

/* ===== 标签云 ===== */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-cloud a {
  padding: 6px 14px;
  background: var(--gray-100);
  border-radius: var(--radius-full);
  font-size: 13px;
  color: var(--gray-600);
  transition: var(--transition-fast);
}

.tag-cloud a:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
}

/* ===== 为什么选择我们 ===== */
.features-section {
  background: var(--gray-100);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition-normal);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  border-radius: var(--radius-lg);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  box-shadow: var(--shadow-glow);
  transition: var(--transition-normal);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--gray-900);
}

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

/* ===== 服务流程 ===== */
.process-section {
  background: white;
  position: relative;
}

.process-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 50px;
  left: 10%;
  right: 10%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  z-index: 0;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.process-step-number {
  width: 100px;
  height: 100px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: white;
  border: 4px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 42px;
  font-weight: 800;
  color: var(--primary);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-normal);
}

.process-step:hover .process-step-number {
  background: var(--gradient-primary);
  color: white;
  transform: scale(1.1);
  box-shadow: var(--shadow-glow);
}

.process-step h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--gray-900);
}

.process-step p {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.6;
}

/* ===== 用户评价 ===== */
.testimonials-section {
  background: var(--gradient-dark);
  color: white;
  position: relative;
  overflow: hidden;
}

.testimonials-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 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='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.testimonials-section .section-title {
  color: white;
}

.testimonials-section .section-subtitle {
  color: var(--gray-400);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
  z-index: 1;
}

.testimonial-card {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition-normal);
}

.testimonial-card:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-6px);
  border-color: var(--secondary);
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.testimonial-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.testimonial-info h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 2px;
}

.testimonial-info .location {
  font-size: 12px;
  color: var(--gray-400);
}

.testimonial-stars {
  color: #ffd700;
  font-size: 14px;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.testimonial-content {
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray-300);
  position: relative;
  padding-left: 20px;
}

.testimonial-content::before {
  content: '"';
  position: absolute;
  left: 0;
  top: -4px;
  font-size: 32px;
  color: var(--primary);
  font-family: Georgia, serif;
  line-height: 1;
}

/* ===== FAQ 常见问题 ===== */
.faq-section {
  background: var(--gray-100);
}

.faq-container {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background: white;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: var(--transition-fast);
}

.faq-item:hover {
  box-shadow: var(--shadow-md);
}

.faq-question {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-900);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: var(--transition-fast);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: var(--transition-fast);
  color: var(--gray-500);
}

.faq-item.active .faq-icon {
  background: var(--gradient-primary);
  color: white;
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.8;
  border-top: 1px solid var(--gray-100);
  padding-top: 16px;
}

/* ===== 网站地图 ===== */
.sitemap-section {
  padding: 60px 0 80px;
  background: var(--gray-100);
}

.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.sitemap-column {
  background: white;
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
}

.sitemap-column h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary);
  color: var(--gray-900);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sitemap-column h3 .icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: white;
}

.sitemap-list li {
  margin-bottom: 8px;
}

.sitemap-list li a {
  display: block;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--gray-600);
  transition: var(--transition-fast);
}

.sitemap-list li a:hover {
  background: rgba(0, 102, 255, 0.08);
  color: var(--primary);
  padding-left: 16px;
}

.sitemap-sublist {
  margin-left: 16px;
  margin-top: 4px;
  margin-bottom: 8px;
}

.sitemap-sublist li {
  margin-bottom: 2px;
}

.sitemap-sublist li a {
  font-size: 13px;
  padding: 4px 10px;
  color: var(--gray-500);
}

.quick-entry-section {
  background: white;
  padding: 50px 0;
  border-top: 1px solid var(--gray-200);
}

.quick-entry-title {
  text-align: center;
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 30px;
  color: var(--gray-900);
}

.quick-entry-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.quick-entry-tags a {
  padding: 10px 24px;
  background: var(--gradient-primary);
  color: white;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition-normal);
}

.quick-entry-tags a:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 102, 255, 0.4);
}

/* ===== 友情链接 ===== */
.links-section {
  padding: 60px 0 80px;
  background: var(--gray-100);
}

.links-category {
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 30px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
}

.links-category-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--gray-200);
}

.links-category-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: white;
}

.links-category-header h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
}

.links-category-header .count {
  margin-left: auto;
  font-size: 13px;
  color: var(--gray-500);
  background: var(--gray-100);
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

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

.link-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--gray-100);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--gray-600);
  transition: var(--transition-fast);
}

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

.link-item .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}

.link-item:hover .dot {
  background: white;
}

.apply-section {
  background: var(--gradient-dark);
  color: white;
  padding: 60px 0;
  position: relative;
  overflow: hidden;
}

.apply-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 102, 255, 0.3) 0%, transparent 70%);
  border-radius: 50%;
}

.apply-section .container {
  position: relative;
  z-index: 1;
  text-align: center;
}

.apply-section h2 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 16px;
}

.apply-section p {
  font-size: 16px;
  color: var(--gray-400);
  max-width: 700px;
  margin: 0 auto 30px;
  line-height: 1.8;
}

.apply-info {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.apply-info-item {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 20px 30px;
  text-align: center;
}

.apply-info-item .label {
  font-size: 13px;
  color: var(--gray-400);
  margin-bottom: 6px;
}

.apply-info-item .value {
  font-size: 18px;
  font-weight: 600;
  color: var(--secondary);
}

/* ===== 响应式补充 ===== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .process-timeline { grid-template-columns: repeat(2, 1fr); }
  .process-timeline::before { display: none; }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .sitemap-grid { grid-template-columns: repeat(2, 1fr); }
  .links-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .features-grid { grid-template-columns: 1fr; }
  .process-timeline { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .sitemap-grid { grid-template-columns: 1fr; }
  .links-grid { grid-template-columns: repeat(2, 1fr); }
  .apply-info { flex-direction: column; align-items: center; }
  .faq-question { font-size: 14px; padding: 16px 18px; }
  .process-step-number { width: 80px; height: 80px; font-size: 32px; }
}