/* ========================================
   广西江晚网络科技有限公司 - 企业官网样式
   设计风格参考：收钱吧官网
   ======================================== */

:root {
  --primary: #1677ff;
  --primary-dark: #0958d9;
  --primary-light: #4096ff;
  --accent: #ff6b00;
  --accent-light: #ff8533;
  --text-primary: #1a1a2e;
  --text-secondary: #666;
  --text-light: #999;
  --bg-white: #ffffff;
  --bg-gray: #f5f7fa;
  --bg-dark: #0d1b2a;
  --border: #e8e8e8;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s ease;
  --header-height: 72px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--text-primary);
  line-height: 1.6;
  background: var(--bg-white);
  overflow-x: hidden;
}

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

ul { list-style: none; }

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

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

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(22, 119, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(22, 119, 255, 0.45);
}

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

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

.btn-ghost {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.25);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
  border-radius: 10px;
}

.btn-block {
  width: 100%;
}

/* ========== 导航栏 ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--border);
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  color: var(--text-primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
}

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

.nav-link {
  padding: 8px 16px;
  font-size: 15px;
  color: var(--text-secondary);
  border-radius: 6px;
  transition: all var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
}

.nav-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 160px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition);
}

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

.dropdown-menu a {
  display: block;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--text-secondary);
}

.dropdown-menu a:hover {
  background: var(--bg-gray);
  color: var(--primary);
}

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

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0a1628 0%, #1a3a6b 40%, #1677ff 100%);
  z-index: -1;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(22, 119, 255, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 107, 0, 0.15) 0%, transparent 40%);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 80px 24px;
}

.hero-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 24px;
}

.hero-title .highlight {
  background: linear-gradient(90deg, #ffd700, #ff6b00);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 32px;
  max-width: 520px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 48px;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
}

.stat-plus {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
  display: inline;
}

.stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 4px;
}

.hero-visual {
  position: relative;
}

.hero-card {
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  backdrop-filter: blur(20px);
}

.card-header {
  display: flex;
  gap: 8px;
  padding: 16px 20px;
  background: #f0f2f5;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.card-body {
  padding: 24px;
}

.dash-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.dash-metric {
  background: var(--bg-gray);
  padding: 16px;
  border-radius: 10px;
}

.metric-label {
  display: block;
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 4px;
}

.metric-value {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}

.metric-trend {
  font-size: 12px;
  color: var(--text-light);
}

.metric-trend.up {
  color: #52c41a;
}

.dash-chart {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 120px;
  padding: 0 8px;
}

.chart-bar {
  flex: 1;
  background: linear-gradient(180deg, var(--primary-light) 0%, var(--primary) 100%);
  border-radius: 4px 4px 0 0;
  animation: barGrow 1.5s ease forwards;
  transform-origin: bottom;
}

@keyframes barGrow {
  from { transform: scaleY(0); }
  to { transform: scaleY(1); }
}

.hero-float {
  position: absolute;
  background: #fff;
  padding: 12px 20px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  animation: float 3s ease-in-out infinite;
}

.float-1 {
  top: -20px;
  right: -20px;
}

.float-2 {
  bottom: 40px;
  left: -30px;
  animation-delay: 1.5s;
}

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

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ========== 通用区块 ========== */
.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(22, 119, 255, 0.1);
  color: var(--primary);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-tag.light {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.section-title.light {
  color: #fff;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
}

.section-header.center {
  text-align: center;
  margin-bottom: 60px;
}

.section-header.center .section-desc {
  margin: 0 auto;
}

/* ========== 核心优势 ========== */
.features {
  padding: 100px 0;
  background: var(--bg-white);
}

.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-bottom: 120px;
}

.feature-block:last-child {
  margin-bottom: 0;
}

.feature-block.reverse {
  direction: rtl;
}

.feature-block.reverse > * {
  direction: ltr;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 32px;
}

.tag {
  padding: 6px 16px;
  background: var(--bg-gray);
  border-radius: 20px;
  font-size: 14px;
  color: var(--text-secondary);
}

.icon-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.icon-item {
  text-align: center;
}

.icon-box {
  width: 72px;
  height: 72px;
  background: var(--bg-gray);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin: 0 auto 12px;
  transition: all var(--transition);
}

.icon-item:hover .icon-box {
  background: rgba(22, 119, 255, 0.1);
  transform: translateY(-4px);
}

.icon-item span {
  font-size: 14px;
  color: var(--text-secondary);
}

.platform-preview {
  background: var(--bg-gray);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.platform-screen {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.screen-nav {
  height: 32px;
  background: #f0f2f5;
}

.screen-content {
  display: flex;
  min-height: 200px;
}

.screen-sidebar {
  width: 60px;
  background: #fafafa;
  border-right: 1px solid var(--border);
}

.screen-main {
  flex: 1;
  padding: 20px;
}

.screen-line {
  height: 10px;
  background: #eee;
  border-radius: 4px;
  margin-bottom: 12px;
}

.screen-line.w80 { width: 80%; }
.screen-line.w60 { width: 60%; }
.screen-line.w90 { width: 90%; }

.screen-cards {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.mini-card {
  flex: 1;
  height: 60px;
  background: linear-gradient(135deg, rgba(22, 119, 255, 0.1), rgba(22, 119, 255, 0.05));
  border-radius: 8px;
}

.channel-icons {
  display: flex;
  gap: 24px;
  justify-content: center;
}

.channel-item {
  text-align: center;
}

.channel-item span {
  display: flex;
  width: 80px;
  height: 80px;
  background: var(--bg-gray);
  border-radius: 20px;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  margin-bottom: 8px;
  transition: all var(--transition);
}

.channel-item:hover span {
  background: rgba(22, 119, 255, 0.1);
  transform: scale(1.05);
}

.channel-item small {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ========== 产品服务 ========== */
.products {
  padding: 100px 0;
  background: var(--bg-gray);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: #fff;
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  border: 1px solid transparent;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(22, 119, 255, 0.2);
}

.product-icon {
  font-size: 40px;
  margin-bottom: 20px;
}

.product-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.product-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.7;
}

.product-link {
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
}

.product-link:hover {
  color: var(--primary-dark);
}

/* ========== 行业方案 ========== */
.solutions {
  padding: 100px 0;
  background: var(--bg-white);
}

.solution-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 48px;
}

.tab-btn {
  padding: 10px 24px;
  border: 1.5px solid var(--border);
  background: #fff;
  border-radius: 24px;
  font-size: 15px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

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

.tab-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.solution-panels {
  position: relative;
  min-height: 360px;
}

.solution-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  animation: fadeIn 0.4s ease;
}

.solution-panel.active {
  display: grid;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.panel-content h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
}

.panel-content p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.8;
}

.panel-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 32px;
}

.panel-features li {
  font-size: 15px;
  color: var(--text-secondary);
}

.solution-illustration {
  height: 280px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--bg-gray) 0%, #e8f0fe 100%);
}

.solution-illustration.ecommerce { background: linear-gradient(135deg, #fff7e6 0%, #ffe7ba 100%); }
.solution-illustration.education { background: linear-gradient(135deg, #e6f7ff 0%, #bae7ff 100%); }
.solution-illustration.government { background: linear-gradient(135deg, #f6ffed 0%, #d9f7be 100%); }
.solution-illustration.manufacturing { background: linear-gradient(135deg, #f9f0ff 0%, #efdbff 100%); }
.solution-illustration.finance { background: linear-gradient(135deg, #fff0f6 0%, #ffd6e7 100%); }
.solution-illustration.other { background: linear-gradient(135deg, #f0f5ff 0%, #d6e4ff 100%); }

/* ========== 客户案例 ========== */
.cases {
  padding: 100px 0;
  background: var(--bg-gray);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.case-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

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

.case-image {
  height: 200px;
  background-size: cover;
  background-position: center;
}

.case-1 { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.case-2 { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }
.case-3 { background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); }
.case-4 { background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%); }

.case-info {
  padding: 28px;
}

.case-info h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.case-info p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ========== 关于我们 ========== */
.about {
  padding: 100px 0;
  background: var(--bg-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}

.value-item {
  padding: 20px;
  background: var(--bg-gray);
  border-radius: var(--radius);
}

.value-item strong {
  display: block;
  font-size: 15px;
  color: var(--primary);
  margin-bottom: 6px;
}

.value-item span {
  font-size: 14px;
  color: var(--text-secondary);
}

.about-card {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: var(--radius-lg);
  padding: 48px 36px;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.about-stat {
  text-align: center;
  color: #fff;
}

.about-num {
  display: block;
  font-size: 42px;
  font-weight: 800;
}

.about-label {
  font-size: 15px;
  opacity: 0.85;
}

/* ========== 联系表单 ========== */
.contact {
  padding: 100px 0;
  background: linear-gradient(135deg, #0a1628 0%, #1a3a6b 50%, #1677ff 100%);
}

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

.contact-desc {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 40px;
  line-height: 1.8;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  color: #fff;
}

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

.contact-item strong {
  display: block;
  font-size: 14px;
  opacity: 0.7;
  margin-bottom: 4px;
}

.contact-item p {
  font-size: 16px;
}

.contact-form {
  background: #fff;
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.contact-form h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 28px;
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  transition: border-color var(--transition);
  background: #fff;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(22, 119, 255, 0.1);
}

.form-group textarea {
  resize: vertical;
}

.form-agree {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 13px;
  color: var(--text-secondary);
}

.form-agree input {
  width: auto;
}

.form-note {
  text-align: center;
  font-size: 13px;
  color: var(--text-light);
  margin-top: 12px;
}

/* ========== 页脚 ========== */
.footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand .logo-text {
  color: #fff;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
}

.footer-links h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 20px;
}

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

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

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

.footer-phone {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.footer-hours {
  font-size: 13px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 13px;
}

.beian a {
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition);
}

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

/* ========== 浮动客服 ========== */
.float-service {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
}

.float-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(22, 119, 255, 0.4);
  transition: all var(--transition);
}

.float-btn:hover {
  transform: scale(1.08);
}

.float-btn-icon {
  font-size: 22px;
}

.float-btn-text {
  font-size: 11px;
}

/* ========== 弹窗 ========== */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

.modal.show {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: #fff;
  padding: 48px;
  border-radius: var(--radius-lg);
  text-align: center;
  max-width: 400px;
  transform: scale(0.9);
  transition: transform var(--transition);
}

.modal.show .modal-content {
  transform: scale(1);
}

.modal-icon {
  width: 64px;
  height: 64px;
  background: #52c41a;
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin: 0 auto 20px;
}

.modal-content h3 {
  font-size: 22px;
  margin-bottom: 12px;
}

.modal-content p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .hero-content,
  .feature-block,
  .about-grid,
  .contact-wrapper,
  .solution-panel {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .feature-block.reverse {
    direction: ltr;
  }

  .hero-visual {
    order: -1;
    max-width: 500px;
    margin: 0 auto;
  }

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

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

  .about-values {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav,
  .header-actions {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #fff;
    padding: 20px;
    box-shadow: var(--shadow);
  }

  .hero-content {
    padding: 40px 24px;
    text-align: center;
  }

  .hero-desc {
    margin: 0 auto 32px;
  }

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

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

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

  .solution-tabs {
    gap: 8px;
  }

  .tab-btn {
    padding: 8px 16px;
    font-size: 13px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .contact-form {
    padding: 28px;
  }

  .panel-features {
    grid-template-columns: 1fr;
  }
}