/* ==========================================================================
   扬州市东立涂装设备有限公司 - 官网样式
   ========================================================================== */

:root {
  --primary: #0d4b8f;
  --primary-dark: #093566;
  --primary-deep: #072647;
  --accent: #f58100;
  --accent-dark: #e06f00;
  --bg-light: #f4f7fb;
  --bg-soft: #eef3f9;
  --text: #26313d;
  --muted: #67778a;
  --line: #e4eaf2;
  --white: #ffffff;
  --shadow: 0 10px 30px rgba(9, 53, 102, .10);
  --shadow-lg: 0 20px 50px rgba(9, 53, 102, .16);
  --radius: 10px;
  --transition: .35s cubic-bezier(.25, .8, .25, 1);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color var(--transition); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container {
  width: 100%;
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }
.section-head { max-width: 760px; }
.section-head.center { margin: 0 auto 52px; text-align: center; }

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.section-tag::after {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--accent);
}
.section-head.center .section-tag::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--accent);
}
.section-head.center .section-tag::after { display: none; }

.section-title {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--primary-deep);
  letter-spacing: 1px;
}
.section-title .accent { color: var(--accent); }
.section-desc {
  margin-top: 12px;
  color: var(--muted);
  font-size: 16px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 30px;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  box-shadow: 0 8px 20px rgba(245, 129, 0, .35);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 26px rgba(245, 129, 0, .45); color: #fff; }
.btn-ghost {
  border: 1.5px solid rgba(255, 255, 255, .7);
  color: #fff;
  background: rgba(255, 255, 255, .08);
}
.btn-ghost:hover { background: rgba(255, 255, 255, .2); color: #fff; }

/* 滚动显现动画 */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity .7s cubic-bezier(.25, .8, .25, 1), transform .7s cubic-bezier(.25, .8, .25, 1);
  will-change: opacity, transform;
}
.reveal-left { transform: translateX(-44px); }
.reveal-right { transform: translateX(44px); }
.reveal-zoom { transform: scale(.92); }
.reveal-up { transform: translateY(36px); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ==========================================================================
   顶部信息条
   ========================================================================== */
.topbar {
  background: var(--primary-deep);
  color: #c6d8ec;
  font-size: 13px;
  position: relative;
  z-index: 60;
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 40px;
}
.topbar-left span, .topbar-right a, .topbar-right span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.topbar-right { display: flex; align-items: center; gap: 18px; }
.topbar-right a { color: #c6d8ec; }
.topbar-right a:hover { color: #ffb65c; }
.topbar-right .iconfont { color: #ffb65c; font-size: 14px; }
.topbar-divider { width: 1px; height: 14px; background: rgba(255, 255, 255, .25); }

/* ==========================================================================
   头部导航
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: 0 6px 20px rgba(9, 53, 102, .12); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 82px;
  gap: 24px;
}

.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-logo {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  box-shadow: 0 6px 16px rgba(13, 75, 143, .35);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary-deep);
  letter-spacing: 2px;
}
.brand-text em {
  font-size: 10.5px;
  letter-spacing: 3px;
  color: var(--muted);
  text-transform: uppercase;
  font-style: normal;
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  position: relative;
  padding: 10px 15px;
  font-size: 16px;
  font-weight: 600;
  color: #35404d;
  white-space: nowrap;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 4px;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-dark));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--primary); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }

.header-right { display: flex; align-items: center; gap: 18px; flex-shrink: 0; }
.header-tel { display: flex; align-items: center; gap: 10px; color: var(--primary-deep); }
.header-tel .iconfont {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(13, 75, 143, .1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  animation: ring 2.4s infinite;
}
.header-tel span { display: flex; flex-direction: column; line-height: 1.25; }
.header-tel small { font-size: 12px; color: var(--muted); }
.header-tel b { font-size: 18px; font-weight: 800; color: var(--primary); }

@keyframes ring {
  0% { box-shadow: 0 0 0 0 rgba(13, 75, 143, .35); }
  70% { box-shadow: 0 0 0 10px rgba(13, 75, 143, 0); }
  100% { box-shadow: 0 0 0 0 rgba(13, 75, 143, 0); }
}

.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 6px; }
.nav-toggle span {
  width: 26px;
  height: 2.5px;
  background: var(--primary-deep);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ==========================================================================
   首屏轮播
   ========================================================================== */
.hero { position: relative; }
.hero-swiper { height: min(820px, 88vh); min-height: 620px; }
.hero-slide { position: relative; overflow: hidden; }
.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 6s linear;
}
.swiper-slide-active .hero-bg { transform: scale(1.08); }
.hero-mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(7, 38, 71, .88) 0%, rgba(9, 53, 102, .72) 45%, rgba(9, 53, 102, .25) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 1500px;
}
.hero-sub {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #ffc16e;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 3px;
  margin-bottom: 18px;
}
.hero-sub::before { content: ""; width: 44px; height: 2px; background: #ffc16e; }
.hero-title {
  font-size: clamp(30px, 4.4vw, 56px);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  letter-spacing: 2px;
  margin-bottom: 20px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, .3);
}
.hero-desc {
  max-width: 680px;
  color: #d9e6f5;
  font-size: 17px;
  margin-bottom: 34px;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-pagination { bottom: 30px !important; }
.hero-pagination .swiper-pagination-bullet {
  width: 12px;
  height: 12px;
  background: rgba(255, 255, 255, .5);
  opacity: 1;
  transition: all var(--transition);
}
.hero-pagination .swiper-pagination-bullet-active {
  width: 46px;
  border-radius: 6px;
  background: var(--accent);
}
.hero-prev, .hero-next {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .35);
  color: #fff;
  transition: all var(--transition);
}
.hero-prev:hover, .hero-next:hover { background: var(--accent); border-color: var(--accent); }
.hero-prev, .hero-next {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-prev::after, .hero-next::after {
  content: "\e6c6";
  font-family: "iconfont";
  font-size: 24px;
  color: #fff;
}
.hero-prev::after { content: "\e6d2"; }

/* ==========================================================================
   关于我们
   ========================================================================== */
.about { background: var(--white); }
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 70px;
  align-items: center;
}
.about-media { position: relative; }
.about-media-main {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-media-main img { width: 100%; height: 520px; object-fit: cover; }
.about-media-float {
  position: absolute;
  left: -34px;
  bottom: -34px;
  width: 46%;
  border-radius: 14px;
  overflow: hidden;
  border: 6px solid #fff;
  box-shadow: var(--shadow-lg);
}
.about-media-float img { width: 100%; height: 180px; object-fit: cover; }
.about-badge {
  position: absolute;
  top: 30px;
  right: -26px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  border-radius: 12px;
  padding: 16px 24px;
  text-align: center;
  box-shadow: 0 12px 26px rgba(245, 129, 0, .4);
}
.about-badge strong { display: block; font-size: 34px; line-height: 1.1; font-weight: 800; }
.about-badge span { font-size: 13px; opacity: .95; }

.about-text { color: var(--muted); margin: 8px 0 24px; font-size: 15.5px; }
.about-list { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 30px; }
.about-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px;
  background: var(--bg-light);
  border-radius: 10px;
  transition: all var(--transition);
}
.about-list li:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.about-list .iconfont {
  font-size: 22px;
  color: var(--accent);
  margin-top: 2px;
}
.about-list span { display: flex; flex-direction: column; }
.about-list strong { color: var(--primary-deep); font-size: 15px; margin-bottom: 2px; }
.about-list span { font-size: 13px; color: var(--muted); }

/* ==========================================================================
   数据统计
   ========================================================================== */
.stats {
  background: linear-gradient(120deg, var(--primary-deep), var(--primary) 60%, #0d5db2);
  position: relative;
  overflow: hidden;
}
.stats::before {
  content: "";
  position: absolute;
  right: -120px;
  top: -120px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .06);
}
.stats::after {
  content: "";
  position: absolute;
  left: -80px;
  bottom: -140px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .05);
}
.stats-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 60px 24px!important;
}
.stat {
  text-align: center;
  color: #fff;
  padding: 12px;
  border-right: 1px solid rgba(255, 255, 255, .15);
}
.stat:last-child { border-right: none; }
.stat-num {
  display: block;
  font-size: 52px;
  font-weight: 800;
  line-height: 1.1;
  color: #ffc16e;
  letter-spacing: 1px;
}
.stat-num .counter { font-style: normal; }
.stat-label { font-size: 15px; color: #d5e4f5; margin-top: 8px; display: block; }

/* ==========================================================================
   产品中心
   ========================================================================== */
.products { background: var(--bg-light); }
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.product-img { position: relative; overflow: hidden; height: 250px; }
.product-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s cubic-bezier(.25, .8, .25, 1); }
.product-card:hover .product-img img { transform: scale(1.12); }
.product-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 38, 71, .02), rgba(7, 38, 71, .45));
}
.product-icon {
  position: absolute;
  z-index: 2;
  left: 20px;
  bottom: -24px;
  width: 58px;
  height: 58px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: 0 8px 18px rgba(13, 75, 143, .35);
}
.product-info { padding: 34px 22px 22px; }
.product-info h3 { font-size: 19px; color: var(--primary-deep); margin-bottom: 8px; font-weight: 700; }
.product-info p { color: var(--muted); font-size: 14px; min-height: 46px; }
.product-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
}
.product-more .iconfont { transition: transform var(--transition); }
.product-card:hover .product-more .iconfont { transform: translateX(5px); }

/* ==========================================================================
   核心优势
   ========================================================================== */
.advantages { background: var(--white); }
.adv-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 70px;
  align-items: center;
}
.adv-media { position: relative; }
.adv-media > img {
  width: 100%;
  height: 560px;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
}
.adv-media::before {
  content: "";
  position: absolute;
  left: -20px;
  top: -20px;
  width: 55%;
  height: 55%;
  border: 3px solid var(--accent);
  border-radius: 16px;
  opacity: .5;
  z-index: -1;
}
.adv-media-tag {
  position: absolute;
  left: 26px;
  bottom: 26px;
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, .95);
  border-radius: 10px;
  padding: 14px 18px;
  box-shadow: var(--shadow);
}
.adv-media-tag .iconfont { font-size: 26px; color: var(--accent); }
.adv-media-tag span { display: flex; flex-direction: column; font-size: 13px; color: var(--muted); line-height: 1.4; }
.adv-media-tag strong { color: var(--primary-deep); font-size: 15px; }

.adv-tabs {
  display: flex;
  gap: 10px;
  margin: 26px 0 24px;
  flex-wrap: wrap;
}
.adv-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 26px;
  background: var(--bg-light);
  color: var(--muted);
  font-size: 15px;
  font-weight: 700;
  border: 1.5px solid transparent;
  transition: all var(--transition);
}
.adv-tab .iconfont { font-size: 18px; }
.adv-tab:hover { color: var(--primary); }
.adv-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 8px 18px rgba(13, 75, 143, .3);
}
.adv-panel { display: none; animation: fadeIn .5s ease; }
.adv-panel.active { display: block; }
.adv-panel h4 { font-size: 19px; color: var(--primary-deep); margin-bottom: 16px; }
.adv-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  color: var(--muted);
  font-size: 15px;
  border-bottom: 1px dashed var(--line);
}
.adv-list li:last-child { border-bottom: none; }
.adv-list .iconfont { color: var(--accent); font-size: 16px; margin-top: 4px; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ==========================================================================
   涂装工艺
   ========================================================================== */
.process { background: var(--bg-light); }
.process-flow {
  display: flex;
  align-items: stretch;
  gap: 0;
}
.process-step {
  flex: 1;
  text-align: center;
  position: relative;
  background: #fff;
  border-radius: var(--radius);
  padding: 34px 18px 28px;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.process-step:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.process-num {
  position: absolute;
  top: 16px;
  right: 18px;
  font-size: 34px;
  font-weight: 800;
  color: rgba(13, 75, 143, .1);
  line-height: 1;
}
.process-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  box-shadow: 0 8px 18px rgba(13, 75, 143, .3);
}
.process-step h4 { font-size: 17px; color: var(--primary-deep); margin-bottom: 6px; }
.process-step p { font-size: 13px; color: var(--muted); }
.process-arrow {
  display: flex;
  align-items: center;
  padding: 0 8px;
  color: var(--accent);
  font-size: 22px;
  flex-shrink: 0;
}

/* ==========================================================================
   应用领域
   ========================================================================== */
.applications { background: var(--white); }
.app-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 22px;
}
.app-card {
  text-align: center;
  padding: 40px 16px 34px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.app-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  opacity: 0;
  transition: opacity var(--transition);
}
.app-card:hover { transform: translateY(-8px); border-color: transparent; box-shadow: var(--shadow-lg); }
.app-card:hover::before { opacity: 1; }
.app-icon {
  position: relative;
  z-index: 2;
  width: 68px;
  height: 68px;
  margin: 0 auto 16px;
  border-radius: 16px;
  background: var(--bg-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  transition: all var(--transition);
}
.app-card:hover .app-icon { background: rgba(255, 255, 255, .16); color: #ffc16e; }
.app-card h4 { position: relative; z-index: 2; font-size: 17px; color: var(--primary-deep); margin-bottom: 4px; transition: color var(--transition); }
.app-card em { position: relative; z-index: 2; font-style: normal; font-size: 12px; color: var(--muted); letter-spacing: 1px; transition: color var(--transition); }
.app-card:hover h4, .app-card:hover em { color: #fff; }

/* ==========================================================================
   新闻中心
   ========================================================================== */
.news { background: var(--white); }
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.news-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border: 1px solid var(--line);
}
.news-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.news-img { position: relative; display: block; height: 220px; overflow: hidden; }
.news-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s cubic-bezier(.25, .8, .25, 1); }
.news-card:hover .news-img img { transform: scale(1.1); }
.news-date {
  position: absolute;
  right: 16px;
  bottom: -1px;
  background: var(--accent);
  color: #fff;
  padding: 8px 14px;
  border-radius: 8px 8px 0 0;
  text-align: center;
  line-height: 1.15;
  display: flex;
  flex-direction: column;
}
.news-date b { font-size: 22px; font-weight: 800; }
.news-date em { font-style: normal; font-size: 12px; opacity: .9; }
.news-body { padding: 20px 22px 24px; }
.news-cat {
  display: inline-block;
  font-size: 12px;
  color: var(--primary);
  background: rgba(13, 75, 143, .1);
  padding: 3px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
}
.news-body h4 { font-size: 18px; line-height: 1.45; margin-bottom: 10px; }
.news-body h4 a { color: var(--primary-deep); }
.news-body h4 a:hover { color: var(--accent); }
.news-body p { font-size: 14px; color: var(--muted); margin-bottom: 14px; }
.news-more { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 700; color: var(--accent); }
.news-more .iconfont { transition: transform var(--transition); }
.news-card:hover .news-more .iconfont { transform: translateX(5px); }

/* ==========================================================================
   页脚
   ========================================================================== */
.footer {
  background: linear-gradient(160deg, var(--primary-deep), #041b33);
  color: #b8c9db;
  padding: 76px 0 20px;
  position: relative;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.4fr;
  gap: 48px;
}
.brand-light .brand-text strong { color: #fff; }
.brand-light .brand-text em { color: #7d94ad; }
.footer-brand p { font-size: 14px; margin: 20px 0 22px; max-width: 340px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .08);
  color: #d5e4f5;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  transition: all var(--transition);
}
.footer-social a:hover { background: var(--accent); color: #fff; transform: translateY(-4px); }
.footer-col h4 {
  color: #fff;
  font-size: 17px;
  margin-bottom: 22px;
  position: relative;
  padding-bottom: 12px;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 36px;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
}
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a { font-size: 14px; color: #b8c9db; display: inline-flex; align-items: center; gap: 6px; }
.footer-col ul a:hover { color: #ffc16e; padding-left: 4px; }
.footer-col ul a .iconfont { font-size: 12px; color: var(--accent); }
.footer-contact li {
  display: flex;
  gap: 10px;
  font-size: 14px;
  align-items: flex-start;
  margin-bottom: 14px;
}
.footer-contact .iconfont { color: #ffc16e; font-size: 17px; margin-top: 3px; flex-shrink: 0; }
.footer-contact a { color: #d5e4f5; }
.footer-contact a:hover { color: #ffc16e; }

.copyright { background: #031529; color: #6f88a0; padding: 20px 0; }
.copyright-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 13.5px;
}

/* ==========================================================================
   右侧悬浮工具栏
   ========================================================================== */
.toolbar {
  position: fixed;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.toolbar-item {
  position: relative;
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: #fff;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.toolbar-item:hover { background: var(--primary); color: #fff; transform: translateX(-4px); }
.toolbar-top { background: var(--accent); color: #fff; }
.toolbar-top:hover { background: var(--accent-dark); }
.toolbar-tip {
  position: absolute;
  right: 58px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--primary-deep);
  color: #fff;
  font-size: 13px;
  padding: 8px 14px;
  border-radius: 6px;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}
.toolbar-tip::after {
  content: "";
  position: absolute;
  right: -5px;
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: var(--primary-deep);
}
.toolbar-item:hover .toolbar-tip { opacity: 1; visibility: visible; right: 62px; }

/* ==========================================================================
   移动端底部导航
   ========================================================================== */
.mobile-bar {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 45;
  background: #fff;
  border-top: 1px solid var(--line);
  box-shadow: 0 -4px 16px rgba(9, 53, 102, .08);
}
.mobile-bar a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 9px 0 7px;
  color: var(--muted);
  font-size: 12px;
}
.mobile-bar a.active, .mobile-bar a:nth-child(3) { color: var(--primary); }
.mobile-bar .iconfont { font-size: 20px; }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1280px) {
  .nav-link { padding: 10px 10px; font-size: 15px; }
  .app-grid { grid-template-columns: repeat(3, 1fr); }
  .about-media-main img { height: 460px; }
}

@media (max-width: 1024px) {
  .section { padding: 76px 0; }
  .nav { display: none; }
  .header-tel span { display: none; }
  .nav-toggle { display: flex; }

  .nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    padding: 10px 24px 18px;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
    align-items: flex-start;
    gap: 2px;
  }
  .nav.open .nav-link { width: 100%; padding: 13px 8px; border-bottom: 1px dashed var(--line); }
  .nav.open .nav-link:last-child { border-bottom: none; }
  .nav.open .nav-link::after { display: none; }

  .about-grid, .adv-grid { grid-template-columns: 1fr; gap: 50px; }
  .about-media { max-width: 620px; margin: 0 auto; }
  .about-badge { right: 10px; }
  .about-media-float { left: -10px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .process-flow { flex-wrap: wrap; gap: 14px; }
  .process-arrow { display: none; }
  .process-step { flex: 1 1 30%; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .section-title { font-size: 30px; }
  .topbar-left { display: none; }
  .topbar-inner { justify-content: center; min-height: 38px; }
  .topbar-right { gap: 12px; font-size: 12px; }
  .brand-logo { width: 42px; height: 42px; font-size: 22px; }
  .brand-text strong { font-size: 20px; }

  .hero-swiper { height: 620px; min-height: 0; }
  .hero-desc { font-size: 15px; }
  .hero-prev, .hero-next { display: none; }
  .hero-mask { background: linear-gradient(180deg, rgba(7, 38, 71, .7), rgba(9, 53, 102, .8)); }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; padding: 44px 10px; }
  .stat { border-right: none; }
  .stat-num { font-size: 40px; }

  .product-grid { grid-template-columns: 1fr; }
  .product-img { height: 220px; }
  .about-media-main img { height: 340px; }
  .about-media-float img { height: 140px; }
  .about-list { grid-template-columns: 1fr; }
  .adv-media > img { height: 380px; }

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

  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .copyright-inner { justify-content: center; text-align: center; }

  .toolbar { right: 10px; }
  .toolbar-item { width: 42px; height: 42px; font-size: 19px; }
  .mobile-bar { display: flex; }
  body { padding-bottom: 56px; }
}

@media (max-width: 420px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 28px; }
  .hero-btns .btn { padding: 11px 22px; font-size: 14px; }
  .app-grid { grid-template-columns: 1fr; }
  .process-step { flex: 1 1 45%; }
}

/* ==========================================================================
   首屏内容入场动画
   ========================================================================== */
.swiper-initialized .hero-content > * { opacity: 0; transform: translateY(26px); }
.swiper-initialized .swiper-slide-active .hero-content > * {
  animation: heroIn 1s cubic-bezier(.25, .8, .25, 1) forwards;
}
.swiper-initialized .swiper-slide-active .hero-content > *:nth-child(1) { animation-delay: .15s; }
.swiper-initialized .swiper-slide-active .hero-content > *:nth-child(2) { animation-delay: .30s; }
.swiper-initialized .swiper-slide-active .hero-content > *:nth-child(3) { animation-delay: .45s; }
.swiper-initialized .swiper-slide-active .hero-content > *:nth-child(4) { animation-delay: .60s; }
@keyframes heroIn {
  from { opacity: 0; transform: translateY(26px); }
  to { opacity: 1; transform: none; }
}
/* ==========================================================================
   无 JS 降级：保证内容可见
   ========================================================================== */
html.no-js .reveal { opacity: 1 !important; transform: none !important; }
html.no-js .hero-content > * { opacity: 1 !important; transform: none !important; }
/* ==========================================================================
   核心优势（重设计 · 大气）
   ========================================================================== */
.advantages {
  background:
    radial-gradient(1200px 520px at 88% -10%, rgba(13, 75, 143, .07), transparent 60%),
    radial-gradient(900px 420px at 0% 108%, rgba(245, 129, 0, .06), transparent 55%),
    #ffffff;
  position: relative;
  overflow: hidden;
}
.advantages::after {
  content: "ADVANTAGES";
  position: absolute;
  left: 50%;
  top: 30px;
  transform: translateX(-50%);
  font-size: 120px;
  font-weight: 800;
  letter-spacing: 8px;
  color: rgba(13, 75, 143, .045);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
}
.advantages .container { position: relative; z-index: 2; }

.adv-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.adv-card {
  position: relative;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 46px 32px 38px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.adv-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .55s cubic-bezier(.25, .8, .25, 1);
}
.adv-card:hover {
  transform: translateY(-12px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.adv-card:hover::before { transform: scaleX(1); }
.adv-card-num {
  position: absolute;
  top: 18px;
  right: 24px;
  font-size: 58px;
  font-weight: 800;
  line-height: 1;
  color: rgba(13, 75, 143, .08);
  transition: color .4s ease;
}
.adv-card:hover .adv-card-num { color: rgba(245, 129, 0, .2); }
.adv-card-icon {
  width: 76px;
  height: 76px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  margin-bottom: 22px;
  box-shadow: 0 12px 26px rgba(13, 75, 143, .32);
  transition: transform .45s cubic-bezier(.25, .8, .25, 1);
}
.adv-card:hover .adv-card-icon { transform: rotate(-6deg) scale(1.06); }
.adv-card h4 { font-size: 23px; font-weight: 800; color: var(--primary-deep); margin-bottom: 6px; letter-spacing: 1px; }
.adv-card-sub {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 18px;
}
.adv-card ul li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 9px 0;
  font-size: 14.5px;
  color: var(--muted);
  border-bottom: 1px dashed var(--line);
}
.adv-card ul li:last-child { border-bottom: none; }
.adv-card ul .iconfont { color: var(--accent); font-size: 15px; margin-top: 4px; flex-shrink: 0; }

/* ==========================================================================
   应用领域（重设计 · 参考应用案例大图切换）
   ========================================================================== */
.applications {
  background:
    linear-gradient(120deg, rgba(7, 38, 71, .95), rgba(4, 27, 51, .88)),
    url('https://images.pexels.com/photos/34207364/pexels-photo-34207364.jpeg?auto=compress&cs=tinysrgb&w=1920') center/cover no-repeat;
  background-color: #072647;
  position: relative;
  padding: 150px 0;
}
.applications .container { position: relative; z-index: 2; }
.section-head.light .section-title { color: #ffffff; }
.section-head.light .section-desc { color: #b8c9db; }

.app-tab-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 26px;
  align-items: stretch;
}
.app-tabs { display: flex; flex-direction: column; gap: 10px; }
.app-tab {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  text-align: left;
  padding: 18px 20px;
  border-radius: 12px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .12);
  color: #d5e4f5;
  transition: all var(--transition);
}
.app-tab .iconfont { font-size: 24px; color: #ffc16e; flex-shrink: 0; }
.app-tab span { display: flex; flex-direction: column; line-height: 1.4; font-size: 16px; font-weight: 700; }
.app-tab em { font-style: normal; font-size: 12px; font-weight: 400; color: #8fa6bd; letter-spacing: 1px; }
.app-tab:hover { border-color: rgba(255, 193, 110, .55); transform: translateX(5px); }
.app-tab.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 10px 28px rgba(245, 129, 0, .42);
}
.app-tab.active .iconfont { color: #fff; }
.app-tab.active em { color: rgba(255, 255, 255, .85); }

.app-panels {
  position: relative;
  min-height: 500px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: #072647;
}
.app-panel {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity .65s ease;
}
.app-panel.active { opacity: 1; visibility: visible; }
.app-panel img { width: 100%; height: 100%; object-fit: cover; }
.app-panel-mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(18deg, rgba(4, 27, 51, .94) 0%, rgba(7, 38, 71, .5) 52%, rgba(7, 38, 71, .12) 100%);
}
.app-panel-index {
  position: absolute;
  top: 24px;
  right: 30px;
  font-size: 68px;
  font-weight: 800;
  line-height: 1;
  color: rgba(255, 255, 255, .28);
}
.app-panel-content {
  position: absolute;
  left: 44px;
  right: 44px;
  bottom: 42px;
  color: #fff;
}
.app-panel-content h4 { font-size: 32px; font-weight: 800; letter-spacing: 1px; margin-bottom: 6px; }
.app-panel-content em {
  display: block;
  font-style: normal;
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #ffc16e;
  margin-bottom: 14px;
}
.app-panel-content p { max-width: 580px; font-size: 15px; line-height: 1.8; color: #d5e4f5; }

/* 重设计板块的响应式 */
@media (max-width: 1024px) {
  .app-tab-layout { grid-template-columns: 1fr; }
  .app-tabs { flex-direction: row; flex-wrap: wrap; }
  .app-tab { flex: 1 1 45%; }
  .app-panels { min-height: 430px; }
  .applications { padding: 110px 0; }
  .advantages::after { font-size: 80px; }
}
@media (max-width: 768px) {
  .adv-cards { grid-template-columns: 1fr; }
  .adv-card { padding: 38px 24px 32px; }
  .app-tabs { flex-direction: row; flex-wrap: nowrap; overflow-x: auto; gap: 8px; padding-bottom: 4px; }
  .app-tab { flex: 0 0 auto; width: auto; padding: 12px 16px; }
  .app-tab span { font-size: 14px; }
  .app-tab em { display: none; }
  .app-panels { min-height: 380px; }
  .app-panel-content { left: 22px; right: 22px; bottom: 26px; }
  .app-panel-content h4 { font-size: 26px; }
  .app-panel-index { top: 16px; right: 18px; font-size: 48px; }
  .advantages::after { font-size: 52px; letter-spacing: 4px; top: 46px; }
  .applications { padding: 84px 0; }
}
/* ==========================================================================
   页脚社交图标 · 悬停二维码
   ========================================================================== */
.footer-social a { position: relative; }
.qrcode-pop {
  position: absolute;
  bottom: calc(100% + 16px);
  left: 50%;
  transform: translate(-50%, 10px);
  width: 150px;
  background: #ffffff;
  border-radius: 10px;
  box-shadow: 0 14px 34px rgba(0, 0, 0, .4);
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s ease, transform .3s ease, visibility .3s ease;
  z-index: 30;
  pointer-events: none;
}
.qrcode-pop img { width: 150px; height: 150px; display: block; border-radius: 10px 10px 0 0; }
.qrcode-pop em {
  display: block;
  text-align: center;
  font-style: normal;
  font-size: 12px;
  color: #26313d;
  padding: 8px 6px 10px;
  line-height: 1.4;
  background: #ffffff;
}
.qrcode-pop::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 7px solid transparent;
  border-top-color: #ffffff;
}
.footer-social a:hover .qrcode-pop {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}
.footer-social a:first-child .qrcode-pop {
  left: 0;
  transform: translate(0, 10px);
}
.footer-social a:first-child .qrcode-pop::after { left: 21px; }
.footer-social a:first-child:hover .qrcode-pop { transform: translate(0, 0); }