/* ===== 全局重置 & 基础 ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --main-color: #e87a20;
  --text-dark: #333;
  --text-gray: #666;
  --bg-light: #f7f7f7;
}

body {
  font-family:
    "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: #1a2b3c;
  background: #f4f7f9;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  max-width: 1350px;
  margin: 0 auto;
  padding: 0 15px;
}

/* ===== 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1350;
  padding: 14px 0;
  transition: all 0.4s ease;
  background: transparent;
}

.navbar.scrolled {
  background: rgba(26, 43, 60, 0.95);
  backdrop-filter: blur(14px);
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.3);
  padding: 10px 0;
}

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

.nav-brand {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 1px;
  color: #fff;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
  transition: color 0.3s;
}

.nav-brand .brand-highlight {
  color: #e87a20;
}

.nav-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.5px;
  background: rgba(232, 122, 32, 0.15);
  padding: 8px 22px;
  border-radius: 30px;
  border: 1px solid rgba(232, 122, 32, 0.3);
  transition: all 0.3s ease;
}

.nav-phone:hover {
  background: rgba(232, 122, 32, 0.3);
  border-color: #e87a20;
  transform: translateY(-1px);
}

.nav-phone .phone-icon {
  font-size: 18px;
}

/* ===== Banner ===== */
.banner {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg,
      #0f1a26 0%,
      #1a2b3c 40%,
      #243b4f 70%,
      #1a2b3c 100%);
  position: relative;
  overflow: hidden;
  padding: 100px 24px 60px;
}

.banner::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -10%;
  width: 60%;
  height: 120%;
  background: radial-gradient(ellipse at 60% 50%,
      rgba(232, 122, 32, 0.08) 0%,
      transparent 60%);
  animation: bannerGlow 12s ease-in-out infinite alternate;
}

.banner::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 120px;
  background: linear-gradient(to top, #f4f7f9 0%, transparent 100%);
  pointer-events: none;
  z-index: 1;
}

@keyframes bannerGlow {
  0% {
    transform: translate(0, 0) scale(1);
  }

  100% {
    transform: translate(-5%, -5%) scale(1.08);
  }
}

.banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 1200px;
  margin: 0 auto;
}

.banner-sub {
  font-size: 14px;
  letter-spacing: 8px;
  color: rgba(232, 122, 32, 0.7);
  text-transform: uppercase;
  font-weight: 400;
  margin-bottom: 16px;
  animation: fadeInUp 1s ease 0.2s both;
}

.banner-title {
  font-size: clamp(38px, 7vw, 60px);
  font-weight: 700;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 12px;
  text-shadow: 0 4px 48px rgba(0, 0, 0, 0.25);
  animation: fadeInUp 1s ease 0.4s both;
}

.banner-title .highlight {
  color: #e87a20;
  position: relative;
}

.banner-title .highlight::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, transparent, #e87a20, transparent);
  border-radius: 2px;
  opacity: 0.6;
}

.banner-desc {
  font-size: clamp(16px, 1.5vw, 22px);
  color: rgba(255, 255, 255, 0.8);
  font-weight: 300;
  letter-spacing: 2px;
  margin-bottom: 28px;
  animation: fadeInUp 1s ease 0.6s both;
}

.banner-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px 48px;
  animation: fadeInUp 1s ease 0.8s both;
  margin-bottom: 32px;
}

.banner-stats .stat-item {
  color: rgba(255, 255, 255, 0.9);
  text-align: center;
}

.banner-stats .stat-number {
  display: block;
  font-size: 21px;
  font-weight: 700;
  color: #e87a20;
  letter-spacing: 0.5px;
}

.banner-stats .stat-label {
  font-size: 14px;
  opacity: 0.7;
  font-weight: 300;
}

.banner-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 20px;
  animation: fadeInUp 1s ease 1s both;
}

.banner-tags .tag {
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 1px;
  padding: 4px 0;
  position: relative;
}

.banner-tags .tag::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: #e87a20;
  transition: width 0.4s ease;
}

.banner-tags .tag:hover::after {
  width: 50%;
}

.banner-tags .tag-dot {
  color: #e87a20;
  margin: 0 4px;
}

.banner-phone-btn {
  display: inline-block;
  margin-top: 36px;
  padding: 14px 48px;
  background: linear-gradient(135deg, #e87a20, #d06010);
  color: #fff;
  font-size: 18px;
  font-weight: 600;
  border-radius: 50px;
  letter-spacing: 1px;
  transition: all 0.4s ease;
  box-shadow: 0 8px 36px rgba(232, 122, 32, 0.35);
  animation: fadeInUp 1s ease 1.2s both;
  border: none;
  cursor: pointer;
}

.banner-phone-btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 14px 56px rgba(232, 122, 32, 0.5);
  background: linear-gradient(135deg, #f08830, #d06010);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(32px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== 公司介绍 ===== */
.about {
  padding: 80px 0 90px;
  background: #f4f7f9;
  position: relative;
}

.about .container {
  display: flex;
  gap: 56px;
  align-items: center;
}

.about-text {
  flex: 1;
}

.about-text .section-label {
  font-size: 13px;
  letter-spacing: 6px;
  color: #e87a20;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 8px;
}

.about-text h2 {
  font-size: 34px;
  font-weight: 700;
  color: #0f1a26;
  margin-bottom: 18px;
  line-height: 1.2;
}

.about-text h2 span {
  color: #1a2b3c;
}

.about-text p {
  color: #2c4052;
  font-size: 15.5px;
  line-height: 1.9;
  margin-bottom: 16px;
  letter-spacing: 0.3px;
}

.about-text .highlight-phone {
  color: #1a2b3c;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.5px;
}

.about-text .highlight-phone a {
  color: #e87a20;
  font-weight: 700;
  transition: color 0.3s;
}

.about-text .highlight-phone a:hover {
  color: #d06010;
}

.about-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 36px;
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid rgba(26, 43, 60, 0.08);
}

.about-meta .meta-item {
  font-size: 15px;
  color: #1a2b3c;
  font-weight: 600;
}

.about-meta .meta-item span {
  font-weight: 300;
  color: #4a6a82;
  margin-left: 4px;
}

.about-image {
  flex: 0 0 600px;
  max-width: 600px;
}

.about-image img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(10, 30, 50, 0.14);
  transition:
    transform 0.6s ease,
    box-shadow 0.6s ease;
}

.about-image img:hover {
  transform: scale(1.01);
  box-shadow: 0 28px 80px rgba(10, 30, 50, 0.2);
}

.about-features {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 14px;
}

.about-features .feat {
  font-size: 14px;
  color: #2c4052;
  display: flex;
  align-items: center;
  gap: 6px;
}

.about-features .feat::before {
  content: "◆";
  color: #e87a20;
  font-size: 10px;
}

/* ===== 产品展示 ===== */
.products {
  padding: 80px 0 90px;
  background: #fff;
}

.products .section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header .label {
  font-size: 13px;
  letter-spacing: 6px;
  color: #e87a20;
  text-transform: uppercase;
  font-weight: 500;
}

.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  color: #0f1a26;
  margin-top: 4px;
}

.section-header h2 span {
  color: #1a2b3c;
}

.product-series {
  margin-bottom: 56px;
}

.product-series:last-child {
  margin-bottom: 0;
}

.series-title {
  font-size: 26px;
  font-weight: 700;
  color: #0f1a26;
  text-align: center;
  margin-bottom: 28px;
  position: relative;
  padding-bottom: 14px;
}

.series-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #e87a20, #d06010);
  border-radius: 2px;
}

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

.product-card {
  background: #f4f7f9;
  border-radius: 14px;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  box-shadow: 0 4px 16px rgba(10, 30, 50, 0.05);
  cursor: default;
  border: 1px solid rgba(26, 43, 60, 0.04);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 48px rgba(10, 30, 50, 0.12);
  border-color: rgba(232, 122, 32, 0.2);
}

.product-card .card-image {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: #dce5ed;
  position: relative;
}

.product-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.product-card:hover .card-image img {
  transform: scale(1.06);
}

.product-card .card-name {
  padding: 16px 14px 18px;
  text-align: center;
  font-size: 15.5px;
  font-weight: 600;
  color: #0f1a26;
  letter-spacing: 0.3px;
  background: #fff;
  border-top: 1px solid rgba(26, 43, 60, 0.04);
}

.product-card .card-name .a-tag {
  color: #e87a20;
  font-weight: 400;
}

/* ===== 底部 ===== */
.footer {
  background: #0f1a26;
  color: rgba(255, 255, 255, 0.7);
  padding: 48px 0 30px;
}

.footer .container {
  text-align: center;
}

.footer-brand {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.footer-brand .highlight {
  color: #e87a20;
}

.footer-phone {
  font-size: 18px;
  color: #e87a20;
  font-weight: 500;
  margin: 8px 0 14px;
  display: inline-block;
}

.footer-divider {
  width: 60px;
  height: 2px;
  background: rgba(232, 122, 32, 0.25);
  margin: 10px auto 18px;
  border-radius: 2px;
}

.footer-copy {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.5px;
}

.friend-links {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.friend-links a {
  display: inline-block;
  color: rgba(255, 255, 255, 0.3);
  font-size: 13px;
  margin: 0 10px;
  padding: 4px 0;
  transition: color 0.3s;
  letter-spacing: 0.5px;
}

.friend-links a:hover {
  color: #e87a20;
}

/* ===== 移动端拨打电话按钮 ===== */
.mobile-phone-fab {
  display: none;
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 999;
  width: 62px;
  height: 62px;
  border-radius: 50%;
  background: linear-gradient(135deg, #e87a20, #d06010);
  color: #fff;
  font-size: 28px;
  box-shadow: 0 8px 32px rgba(232, 122, 32, 0.45);
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.mobile-phone-fab:hover {
  transform: scale(1.08);
  box-shadow: 0 12px 48px rgba(232, 122, 32, 0.6);
}

.mobile-phone-fab:active {
  transform: scale(0.94);
}

/* 优势模块容器 */
.advantage-section {
  max-width: 1200px;
  margin: 60px auto;
  padding: 0 20px;
}

/* 标题样式 */
.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 32px;
  color: var(--text-dark);
  position: relative;
  display: inline-block;
  padding-bottom: 15px;
}

.section-title h2::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: var(--main-color);
}

/* 卡片网格布局 */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

/* 卡片样式 */
.advantage-card {
  background: var(--bg-light);
  border-radius: 12px;
  padding: 40px 30px;
  text-align: center;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.advantage-card:hover {
  transform: translateY(-8px);
  border-color: var(--main-color);
  box-shadow: 0 10px 25px rgba(232, 122, 32, 0.15);
}

.info-card {
    background: #fff;
    border-radius: 28px;
    padding: 30px 28px;
    height: 100%;
    border: 1px solid #f1f5f9;
    transition: 0.25s;
    box-shadow: 0 4px 12px rgb(0 0 0 / 4%);
}

.info-card:hover {
    border-color: var(--main-color);
    transform: translateY(-4px);
    box-shadow: 0 16px 32px -12px rgba(14, 165, 122, 0.10);
}

.info-card .icon-circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--light);
    color: var(--green);
    font-size: 1.8rem;
    margin-bottom: 18px;
}

.info-card h5 {
    font-weight: 700;
    margin-bottom: 12px;
    font-size: 1.4rem;
    color: var(--text-dark);
}

.info-card p {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 0;
}

/* 图标样式 */
.card-icon {
  font-size: 42px;
  color: var(--main-color);
  margin-bottom: 20px;
}

/* 卡片标题 */
.card-title {
  font-size: 20px;
  font-weight: bold;
  color: var(--text-dark);
  margin-bottom: 15px;
}

/* 卡片内容 */
.card-desc {
  font-size: 15px;
  color: var(--text-gray);
  line-height: 1.8;
}

/* 响应式适配 */
@media (max-width: 768px) {
  .section-title h2 {
    font-size: 26px;
  }

  .advantage-card {
    padding: 30px 20px;
  }
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .about .container {
    flex-direction: column;
    gap: 40px;
  }

  .about-image {
    flex: 0 0 auto;
    max-width: 100%;
    width: 100%;
  }

  .about-image img {
    max-height: 380px;
    object-fit: cover;
  }

  .product-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }
}

@media (max-width: 900px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .nav-brand {
    font-size: 20px;
  }

  .nav-phone {
    font-size: 15px;
    padding: 6px 16px;
  }
}

@media (max-width: 768px) {
  .navbar {
    padding: 12px 0;
  }

  .nav-brand {
    font-size: 18px;
  }

  .nav-phone {
    font-size: 13px;
    padding: 5px 14px;
    gap: 4px;
  }

  .nav-phone .phone-icon {
    font-size: 15px;
  }

  .banner {
    min-height: 88vh;
    padding: 80px 20px 50px;
  }

  .banner-title {
    font-size: 30px;
  }

  .banner-stats .stat-number {
    font-size: 22px;
  }

  .banner-stats {
    gap: 14px 30px;
  }

  .banner-tags .tag {
    font-size: 13px;
  }

  .banner-phone-btn {
    padding: 12px 32px;
    font-size: 16px;
  }

  .about {
    padding: 56px 0 60px;
  }

  .about-text h2 {
    font-size: 26px;
  }

  .about-text p {
    font-size: 14.5px;
  }

  .about-image img {
    max-height: 260px;
  }

  .products {
    padding: 56px 0 60px;
  }

  .products .section-header h2 {
    font-size: 28px;
  }

  .series-title {
    font-size: 22px;
  }

  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .product-card .card-name {
    font-size: 14px;
    padding: 12px 10px 14px;
  }

  .mobile-phone-fab {
    display: flex;
    width: 56px;
    height: 56px;
    font-size: 24px;
    bottom: 24px;
    right: 24px;
  }
}

@media (max-width: 480px) {
  .nav-brand {
    font-size: 16px;
    letter-spacing: 0;
  }

  .nav-phone {
    font-size: 11px;
    padding: 4px 10px;
    gap: 3px;
  }

  .nav-phone .phone-icon {
    font-size: 12px;
  }

  .banner-title {
    font-size: 24px;
  }

  .banner-desc {
    font-size: 14px;
  }

  .banner-stats .stat-number {
    font-size: 18px;
  }

  .banner-stats .stat-label {
    font-size: 12px;
  }

  .banner-stats {
    gap: 10px 20px;
  }

  .banner-tags {
    gap: 4px 12px;
  }

  .banner-tags .tag {
    font-size: 12px;
  }

  .banner-phone-btn {
    padding: 10px 22px;
    font-size: 14px;
    margin-top: 28px;
  }

  .about-text h2 {
    font-size: 22px;
  }

  .about-text p {
    font-size: 14px;
  }

  .about-meta .meta-item {
    font-size: 13px;
  }

  .products .section-header h2 {
    font-size: 22px;
  }

  .series-title {
    font-size: 19px;
  }

  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .product-card .card-name {
    font-size: 12.5px;
    padding: 10px 6px 12px;
  }

  .mobile-phone-fab {
    width: 50px;
    height: 50px;
    font-size: 20px;
    bottom: 18px;
    right: 18px;
  }
}

@media (max-width: 380px) {
  .product-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .nav-phone {
    font-size: 10px;
    padding: 3px 8px;
  }

  .banner-title {
    font-size: 20px;
  }
}