/* ==========================================================================
   舒美 · 始于1987 - 官网视觉重塑 v5（符合国人审美的工业高端大气风范）
   ========================================================================== */
:root {
  --primary: #0e4884;          /* 舒美工业深蓝：沉稳、权威、专业 */
  --primary-dark: #092f58;     /* 极深蓝 */
  --primary-light: #1668bc;    /* 亮蓝 */
  --primary-soft: #edf4fb;     /* 软浅蓝 */
  --gold: #c59837;             /* 典雅香槟金：老厂沉淀与品质荣誉 */
  --gold-dark: #a17822;
  --gold-soft: #fcf8ee;
  --dark: #0f172a;             /* 深墨灰 */
  --text: #334155;             /* 正文灰 */
  --muted: #64748b;            /* 次级文字 */
  --border: #e2e8f0;           /* 细边框线 */
  --bg-page: #ffffff;
  --bg-alt: #f8fafc;           /* 浅灰底 */
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 10px 25px -5px rgba(14, 72, 132, 0.08), 0 8px 10px -6px rgba(14, 72, 132, 0.04);
  --shadow-lg: 0 20px 40px -15px rgba(14, 72, 132, 0.15);
  --radius: 8px;
  --radius-lg: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; overflow-x: hidden; width: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background-color: var(--bg-page);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  width: 100%;
}
a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

.container {
  width: 1280px;
  max-width: calc(100% - 48px);
  margin: 0 auto;
}

/* ---------------- 顶部信息条 ---------------- */
.topbar {
  background: #081d33;
  color: #94a3b8;
  font-size: 13px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 38px;
}
.topbar .slogan {
  display: flex;
  align-items: center;
  gap: 12px;
}
.topbar .slogan .badge {
  background: linear-gradient(90deg, var(--gold), #e0b85a);
  color: #fff;
  padding: 1px 8px;
  border-radius: 3px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
}
.topbar .quick-links {
  display: flex;
  align-items: center;
  gap: 20px;
}
.topbar .quick-links a {
  color: #cbd5e1;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.topbar .quick-links a:hover { color: #fff; }
.topbar .quick-links .divider { color: rgba(255,255,255,0.2); }

/* ---------------- 主导航栏 ---------------- */
.navbar {
  background: #ffffff;
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
  border-bottom: 1px solid var(--border);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 86px;
}

.brand-logo {
  display: flex;
  align-items: center;
}
.brand-logo img {
  height: 52px;
  width: auto;
  object-fit: contain;
}

.nav-menu {
  display: flex;
  align-items: center;
  height: 86px;
  margin: 0;
  padding: 0;
  gap: 0;
}
.nav-menu li {
  height: 86px;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.nav-menu li a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0 15px;
  height: 86px;
  position: relative;
  color: var(--dark);
  text-align: center;
  white-space: nowrap !important;
  word-break: keep-all !important;
  text-decoration: none;
  gap: 3px;
}
.nav-menu li a .cn {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: #1e293b;
  white-space: nowrap !important;
  word-break: keep-all !important;
  line-height: 1.1;
  transition: color 0.2s;
}
.nav-menu li a .en {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.8px;
  color: #64748b;
  text-transform: uppercase;
  white-space: nowrap !important;
  word-break: keep-all !important;
  line-height: 1;
  transition: color 0.2s;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
.nav-menu li a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 15px;
  right: 15px;
  height: 3px;
  background: var(--primary);
  border-radius: 3px 3px 0 0;
  transform: scaleX(0);
  transition: transform 0.25s ease;
}
.nav-menu li a:hover .cn,
.nav-menu li a.active .cn { color: var(--primary); }
.nav-menu li a:hover .en,
.nav-menu li a.active .en { color: var(--primary); opacity: 0.9; }
.nav-menu li a:hover::after,
.nav-menu li a.active::after { transform: scaleX(1); }

/* 移动端汉堡按钮 */
.mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  background: #ffffff;
  border-radius: 8px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  padding: 0;
  transition: all 0.2s;
}
.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: all 0.3s;
}

/* 移动端全屏滑出抽屉 */
.mobile-drawer-mask {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 9998;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.mobile-drawer-mask.active {
  display: block;
  opacity: 1;
}
.mobile-drawer {
  position: fixed;
  top: 0; right: -320px;
  width: 300px;
  max-width: 85vw;
  height: 100%;
  background: #ffffff;
  z-index: 9999;
  box-shadow: -10px 0 30px rgba(0,0,0,0.15);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.mobile-drawer.active {
  transform: translateX(-320px);
}
.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}
.mobile-drawer-header img { height: 38px; width: auto; }
.mobile-drawer-close {
  background: none;
  border: none;
  font-size: 26px;
  color: var(--muted);
  cursor: pointer;
  line-height: 1;
}
.mobile-nav-list {
  list-style: none;
  margin: 0;
  padding: 12px 0;
  flex: 1;
}
.mobile-nav-list li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  color: #1e293b;
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  border-bottom: 1px solid rgba(0,0,0,0.03);
}
.mobile-nav-list li a .drawer-en {
  font-size: 11px;
  color: #94a3b8;
  font-weight: 500;
  text-transform: uppercase;
}
.mobile-nav-list li a:hover,
.mobile-nav-list li a.active {
  background: var(--primary-soft);
  color: var(--primary);
}
.mobile-nav-list li a:hover .drawer-en,
.mobile-nav-list li a.active .drawer-en {
  color: var(--primary);
}
.mobile-drawer-footer {
  padding: 20px;
  background: #f8fafc;
  border-top: 1px solid var(--border);
}
.mobile-drawer-tel {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--primary);
  color: #ffffff !important;
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(14, 72, 132, 0.25);
}

.nav-phone {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-left: 20px;
  border-left: 1px solid var(--border);
  height: 48px;
}
.phone-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.phone-content small {
  display: block;
  font-size: 11px;
  color: var(--muted);
  line-height: 1.2;
}
.phone-content strong {
  display: block;
  font-size: 19px;
  color: var(--primary);
  font-family: Arial, sans-serif;
  font-weight: 700;
  letter-spacing: 0.5px;
  line-height: 1.2;
}

/* ---------------- 首屏 HERO ---------------- */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, #f0f5fb 0%, #ffffff 50%, #f7f9fc 100%);
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  min-height: 620px;
  display: flex;
  align-items: center;
}
.hero-bg-accent {
  position: absolute;
  right: -150px;
  top: -150px;
  width: 880px;
  height: 880px;
  background: radial-gradient(circle, rgba(14, 72, 132, 0.08) 0%, rgba(14, 72, 132, 0.02) 50%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-section .container {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: 1.05fr 1.15fr;
  align-items: center;
  gap: 48px;
  padding: 60px 0;
}

.hero-content { max-width: 580px; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #ffffff;
  border: 1px solid rgba(14, 72, 132, 0.15);
  box-shadow: var(--shadow-sm);
  padding: 6px 18px 6px 14px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 24px;
}
.hero-tag .dot {
  width: 8px;
  height: 8px;
  background: var(--gold);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(197, 152, 55, 0.2);
}
.hero-title {
  font-size: 50px;
  font-weight: 800;
  color: var(--dark);
  line-height: 1.24;
  letter-spacing: -0.5px;
  margin-bottom: 22px;
}
.hero-title .highlight {
  color: var(--primary);
  position: relative;
  display: inline-block;
}
.hero-title .highlight::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 100%;
  height: 8px;
  background: rgba(197, 152, 55, 0.22);
  z-index: -1;
  border-radius: 4px;
}
.hero-desc {
  font-size: 16px;
  color: #475569;
  line-height: 1.85;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 52px;
  padding: 0 32px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #ffffff;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  box-shadow: 0 10px 20px rgba(14, 72, 132, 0.25);
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(14, 72, 132, 0.32);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 52px;
  padding: 0 28px;
  background: #ffffff;
  color: var(--dark);
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
}
.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-soft);
}

.btn-refresh-random {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--primary);
  background: rgba(14, 72, 132, 0.06);
  border: 1px dashed rgba(14, 72, 132, 0.3);
  padding: 8px 14px;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s;
  user-select: none;
  margin-top: 14px;
}
.btn-refresh-random:hover {
  background: rgba(14, 72, 132, 0.12);
  border-color: var(--primary);
}

.hero-stage {
  position: relative;
  height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.stage-pedestal {
  position: absolute;
  left: 50%;
  top: 54%;
  width: 480px;
  height: 480px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle at 45% 40%, #ffffff 0%, #e2ecf9 60%, #cddff4 100%);
  box-shadow: inset 0 -25px 60px rgba(14, 72, 132, 0.12), 0 30px 60px rgba(14, 72, 132, 0.08);
  pointer-events: none;
}
.stage-orbit {
  position: absolute;
  left: 50%;
  top: 54%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.orbit-1 { width: 580px; height: 580px; border: 1px solid rgba(14, 72, 132, 0.14); }
.orbit-2 { width: 680px; height: 680px; border: 1px dashed rgba(14, 72, 132, 0.1); }

.device-slot {
  position: absolute;
  transition: all 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
}
.device-slot img {
  filter: drop-shadow(0 20px 30px rgba(15, 23, 42, 0.18));
  transition: transform 0.35s ease, filter 0.35s ease;
  object-fit: contain;
}
.device-slot:hover img {
  transform: translateY(-8px) scale(1.03);
  filter: drop-shadow(0 28px 36px rgba(15, 23, 42, 0.25));
}

.device-tag {
  margin-top: 10px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(14, 72, 132, 0.18);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
  white-space: nowrap;
  pointer-events: none;
  transition: all 0.25s;
}
.device-slot:hover .device-tag {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.slot-left { left: 20px; bottom: 45px; z-index: 2; }
.slot-left img { width: 200px; height: 200px; }

.slot-center { left: 50%; top: 48%; transform: translate(-50%, -50%); z-index: 5; }
.slot-center img { width: 310px; height: 310px; }
.slot-center .device-tag {
  background: #ffffff;
  border: 1px solid var(--gold);
  color: var(--primary-dark);
  font-size: 13px;
  padding: 5px 14px;
}
.slot-center .device-tag::before {
  content: "★ 推荐 ";
  color: var(--gold);
  font-size: 11px;
}

.slot-right { right: 20px; bottom: 45px; z-index: 2; }
.slot-right img { width: 170px; height: 170px; }

/* ---------------- 实力数据带 ---------------- */
.milestone-bar {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  position: relative;
  z-index: 20;
}
.milestone-bar .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.milestone-item {
  padding: 36px 30px;
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}
.milestone-item:first-child { border-left: none; padding-left: 0; }
.milestone-num {
  font-family: Arial, sans-serif;
  font-size: 42px;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.milestone-num span { font-size: 18px; color: var(--gold); font-weight: 700; }
.milestone-label { font-size: 14px; font-weight: 600; color: var(--dark); margin-top: 10px; }
.milestone-sub { font-size: 12px; color: var(--muted); margin-top: 3px; }

/* ---------------- 通用区块规范 ---------------- */
.section { padding: 88px 0; }
.section.bg-alt { background: var(--bg-alt); }
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 46px;
}
.section-title-wrap .subhead {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--primary);
  margin-bottom: 8px;
}
.section-title-wrap .subhead::before {
  content: "";
  width: 20px;
  height: 2px;
  background: var(--primary);
}
.section-title-wrap h2 {
  font-size: 34px;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.3px;
  line-height: 1.25;
}
.section-title-wrap p { font-size: 15px; color: var(--muted); margin-top: 8px; }
.section-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 4px;
  background: var(--primary-soft);
  transition: all 0.2s;
}
.section-link:hover { background: var(--primary); color: #fff; }

/* ---------------- 产品中心模块 ---------------- */
.product-categories {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-bottom: 50px;
}
.cat-card {
  position: relative;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  overflow: hidden;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow-sm);
}
.cat-card:hover {
  border-color: var(--primary-light);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.cat-card .cat-num {
  font-family: Arial, sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 1px;
}
.cat-card h3 {
  font-size: 21px;
  font-weight: 700;
  color: var(--dark);
  margin-top: 6px;
  line-height: 1.3;
}
.cat-card .cat-code {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  margin-top: 2px;
}
.cat-card .cat-features {
  margin-top: 14px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}
.cat-card img {
  position: absolute;
  right: 12px;
  bottom: 12px;
  height: 145px;
  width: auto;
  max-width: 58%;
  object-fit: contain;
  transition: transform 0.35s ease;
}
.cat-card:hover img { transform: scale(1.08) translateY(-4px); }
.cat-card .cat-arrow {
  position: absolute;
  left: 24px;
  bottom: 22px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 4px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.prod-item {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}
.prod-item:hover {
  border-color: #cbd5e1;
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.prod-thumb {
  height: 230px;
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  border-bottom: 1px solid #f1f5f9;
  position: relative;
}
.prod-thumb img {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
  transition: transform 0.3s ease;
}
.prod-item:hover .prod-thumb img { transform: scale(1.05); }
.prod-info {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.prod-model {
  font-family: Arial, sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  display: inline-block;
  margin-bottom: 6px;
}
.prod-title {
  font-size: 15px;
  color: var(--dark);
  font-weight: 500;
  line-height: 1.5;
  height: 45px;
  overflow: hidden;
}
.prod-btn {
  margin-top: 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ---------------- 关于舒美 ---------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 56px;
  align-items: center;
}
.about-text .lead {
  font-size: 17px;
  font-weight: 600;
  color: var(--dark);
  line-height: 1.7;
  margin-bottom: 16px;
}
.about-text p {
  font-size: 15px;
  color: #475569;
  line-height: 1.85;
  margin-bottom: 26px;
}
.honor-badge-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 34px;
}
.honor-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #ffffff;
  padding: 12px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  font-size: 13px;
  font-weight: 600;
  color: var(--dark);
}
.honor-item .icon {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--gold-soft);
  color: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}

/* ---------------- 关于舒美：实景画报卡（方案一·升级双图层与高清放大） ---------------- */
.about-scene-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.22);
  background: #0f172a;
  border: 4px solid #ffffff;
  aspect-ratio: 16 / 10.5;
}

.scene-slides-wrap {
  position: relative;
  width: 100%;
  height: 100%;
}

.scene-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.45s ease, transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
}

.scene-slide.active {
  opacity: 1;
  pointer-events: auto;
}

.scene-slide .scene-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.scene-slide:hover .scene-img {
  transform: scale(1.03);
}

.scene-zoom-hint {
  position: absolute;
  top: 18px;
  right: 175px;
  background: rgba(10, 24, 45, 0.76);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #fff;
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 14px;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 9;
}

.about-scene-card:hover .scene-zoom-hint {
  opacity: 0.95;
}

.about-scene-tag {
  position: absolute;
  top: 18px;
  left: 20px;
  background: rgba(10, 24, 45, 0.82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  z-index: 10;
  letter-spacing: 0.5px;
}

.about-scene-tag .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.about-scene-switcher {
  position: absolute;
  top: 18px;
  right: 20px;
  background: rgba(10, 24, 45, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 3px;
  border-radius: 20px;
  display: flex;
  gap: 4px;
  z-index: 10;
}

.about-scene-switcher button {
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.85);
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 500;
}

.about-scene-switcher button.active,
.about-scene-switcher button:hover {
  background: var(--gold);
  color: #0a182d;
  font-weight: 600;
}

.about-scene-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 22px 24px;
  background: linear-gradient(180deg, transparent 0%, rgba(10, 24, 45, 0.94) 80%);
  color: #ffffff;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  z-index: 8;
  pointer-events: none;
}

.about-scene-caption h4 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 4px;
  color: #fff;
  letter-spacing: 0.3px;
}

.about-scene-caption p {
  font-size: 12px;
  color: #cbd5e1;
  margin: 0;
}

.about-scene-badge {
  background: rgba(197, 160, 89, 0.22);
  border: 1px solid rgba(197, 160, 89, 0.65);
  color: #f1dfa5;
  padding: 5px 12px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}

/* Lightbox 大图弹窗 */
.scene-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(5, 12, 22, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.scene-lightbox.active {
  display: flex;
}
.scene-lightbox-content {
  position: relative;
  max-width: 92vw;
  max-height: 88vh;
  box-shadow: 0 25px 60px rgba(0,0,0,0.5);
  border-radius: 12px;
  overflow: hidden;
  border: 2px solid rgba(255,255,255,0.2);
  background: #000;
}
.scene-lightbox-img {
  width: 100%;
  max-height: 76vh;
  display: block;
  object-fit: contain;
}
.scene-lightbox-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(0,0,0,0.65);
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  z-index: 10;
}
.scene-lightbox-close:hover {
  background: var(--gold);
  color: #000;
}
.scene-lightbox-bar {
  padding: 12px 20px;
  background: #0a182d;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ---------------- 合作客户院校矩阵 ---------------- */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
  background: #ffffff;
}
.partner-item {
  height: 120px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px;
  transition: all 0.25s;
}
.partner-item:hover { background: #f8fafc; }
.partner-item img {
  height: 48px;
  width: auto;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.75;
  transition: all 0.25s;
}
.partner-item:hover img {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.06);
}
.partner-item span { font-size: 13px; font-weight: 500; color: var(--muted); }
.partner-item:hover span { color: var(--primary); font-weight: 600; }
.partner-footnote { margin-top: 18px; text-align: right; font-size: 13px; color: var(--muted); }

/* ---------------- 新闻与知识中心 ---------------- */
.news-layout {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 36px;
}
.news-feature {
  background: #ffffff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all 0.3s;
}
.news-feature:hover { box-shadow: var(--shadow-md); border-color: #cbd5e1; }
.news-feature-thumb {
  height: 280px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  border-bottom: 1px solid #f1f5f9;
}
.news-feature-thumb img { max-height: 240px; object-fit: contain; }
.news-feature-body { padding: 26px; }
.news-meta {
  font-size: 13px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.news-feature h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.4;
  margin-bottom: 12px;
}
.news-feature p { font-size: 14px; color: var(--muted); line-height: 1.7; }

.news-list { display: flex; flex-direction: column; justify-content: space-between; }
.news-list-item { padding: 20px 0; border-bottom: 1px solid var(--border); }
.news-list-item:first-child { padding-top: 0; }
.news-list-item:last-child { border-bottom: none; }
.news-list-item .date { font-size: 13px; color: var(--muted); font-family: Arial, sans-serif; }
.news-list-item h4 {
  font-size: 16px;
  font-weight: 500;
  color: var(--dark);
  line-height: 1.5;
  margin-top: 6px;
  transition: color 0.2s;
}
.news-list-item:hover h4 { color: var(--primary); }

/* ---------------- 底部咨询横幅 ---------------- */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, #07284d 100%);
  color: #ffffff;
  padding: 50px 0;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  right: -50px;
  top: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}
.cta-banner .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  z-index: 2;
}
.cta-banner h3 { font-size: 30px; font-weight: 700; letter-spacing: -0.5px; }
.cta-banner p { font-size: 15px; color: #cbd5e1; margin-top: 6px; }
.cta-contact { display: flex; align-items: center; gap: 24px; }
.cta-tel { text-align: right; }
.cta-tel small { display: block; font-size: 12px; color: #cbd5e1; letter-spacing: 0.5px; }
.cta-tel strong {
  font-family: Arial, sans-serif;
  font-size: 32px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 1px;
}
.btn-gold {
  height: 50px;
  padding: 0 28px;
  background: linear-gradient(135deg, #e0b85a 0%, var(--gold) 100%);
  color: #081d33;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}
.btn-gold:hover {
  background: linear-gradient(135deg, #ebd188 0%, #d4a339 100%);
  transform: translateY(-2px);
}

/* ---------------- 页脚 ---------------- */
.footer {
  background: #091a2e;
  color: #94a3b8;
  font-size: 14px;
  padding-top: 60px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-col h5 {
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h5::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background: var(--gold);
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col a:hover { color: #ffffff; }
.footer-contact-list li { display: flex; align-items: flex-start; gap: 8px; line-height: 1.6; }
.footer-qrcode { display: flex; align-items: center; gap: 16px; margin-top: 10px; }
.footer-qrcode img {
  width: 96px;
  height: 96px;
  background: #fff;
  padding: 4px;
  border-radius: 4px;
}
.footer-qrcode p { font-size: 13px; line-height: 1.5; color: #cbd5e1; }

.footer-links {
  padding: 24px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
}
.footer-links strong { color: #cbd5e1; white-space: nowrap; }
.footer-links-wrap { display: flex; flex-wrap: wrap; gap: 16px; }
.footer-links-wrap a:hover { color: #ffffff; }

.footer-bottom {
  padding: 22px 0;
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-bottom a { color: #94a3b8; }
.footer-bottom a:hover { color: #ffffff; }

/* 保证右下角悬浮客服（.jdc-side）层级与位置完全遵照原站 */
.jdc-side {
  display: block !important;
  position: fixed !important;
  right: 20px !important;
  bottom: 20px !important;
  z-index: 500 !important;
}

@media(max-width: 1100px) {
  .hero-section .container { grid-template-columns: 1fr; }
  .hero-stage { height: 420px; }
  .about-grid { grid-template-columns: 1fr; }
  .product-categories { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .milestone-bar .container { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(3, 1fr); }
  .news-layout { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media(max-width: 992px) {
  .container {
    width: 100% !important;
    max-width: 100% !important;
    padding-left: 16px !important;
    padding-right: 16px !important;
    box-sizing: border-box !important;
  }
  .navbar .container {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    height: 64px !important;
    width: 100% !important;
    max-width: 100% !important;
    padding: 0 16px !important;
    box-sizing: border-box !important;
  }
  .nav-menu { display: none !important; }
  .nav-phone { display: none !important; }
  .brand-logo {
    display: flex !important;
    align-items: center !important;
    flex: 0 1 auto !important;
  }
  .brand-logo img {
    height: 30px !important;
    width: auto !important;
    max-width: 220px !important;
    object-fit: contain !important;
  }
  .mobile-toggle {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    flex-direction: column !important;
    gap: 5px !important;
    width: 40px !important;
    height: 40px !important;
    background: #f1f5f9 !important;
    border: 1px solid #cbd5e1 !important;
    border-radius: 6px !important;
    flex-shrink: 0 !important;
    margin-left: auto !important;
    z-index: 100 !important;
    cursor: pointer !important;
  }
  .mobile-toggle span {
    display: block !important;
    width: 20px !important;
    height: 2px !important;
    background: #0e4884 !important;
    border-radius: 2px !important;
  }
  .hero-section { min-height: auto; padding: 30px 0; }
  .hero-section .container { padding: 15px 0; gap: 24px; }
  .hero-title { font-size: 28px; line-height: 1.25; }
  .hero-desc { font-size: 14px; line-height: 1.6; }
  .hero-stage { height: 340px; max-width: 100%; margin: 0 auto; }
}

@media(max-width: 768px) {
  .topbar { display: none; }
  .section-pad { padding: 50px 0; }
  .section-header { margin-bottom: 30px; }
  .section-header h2 { font-size: 24px; }
  .hero-title { font-size: 26px; }
  .hero-actions { flex-direction: column; width: 100%; gap: 12px; }
  .hero-actions .btn-primary, .hero-actions .btn-secondary { width: 100%; justify-content: center; text-align: center; }
  .hero-stage { height: 320px; }
  .device-slot.slot-left { transform: translate3d(-100px, 20px, -40px) scale(0.85); }
  .device-slot.slot-right { transform: translate3d(100px, 20px, -40px) scale(0.85); }
  .device-slot.slot-center { transform: translate3d(0, -10px, 50px) scale(1.05); }
  .product-categories { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .milestone-bar .container { grid-template-columns: 1fr 1fr; gap: 20px; }
  .milestone-num { font-size: 32px; }
  .partner-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .about-matrix-grid { grid-template-columns: 1fr; gap: 14px; }
  .footer-top { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; text-align: center; gap: 10px; }
  .footer-links { flex-direction: column; align-items: flex-start; }
  .jdc-side { right: 10px !important; bottom: 60px !important; transform: scale(0.85); transform-origin: right bottom; }
}


/* ---------------- 返回顶部按钮 ---------------- */
.back-to-top {
  position: fixed;
  right: 28px;
  bottom: 32px;
  width: 44px;
  height: 44px;
  background: #1677ff;
  color: #ffffff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(22, 119, 255, 0.35);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 9999;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  background: #0958d9;
  transform: translateY(-2px);
}

/* ===== 导航栏「彩页报价」醒目高亮样式（未选中与选中双色区分） ===== */
.nav-menu li.nav-highlight > a,
.nav-menu > li.nav-highlight > a {
  height: 54px !important;
  margin: auto 4px !important;
  padding: 0 16px !important;
  background: #fff1f2 !important;
  border: 1px solid #fecdd3 !important;
  border-radius: 8px !important;
  transition: all 0.25s ease !important;
}
.nav-menu li.nav-highlight > a .cn,
.nav-menu > li.nav-highlight > a .cn {
  color: #e11d48 !important;
  font-weight: 800 !important;
  position: relative;
}
.nav-menu li.nav-highlight > a .en,
.nav-menu > li.nav-highlight > a .en {
  color: #ea580c !important;
  font-weight: 700 !important;
  opacity: 1 !important;
}
.nav-menu li.nav-highlight > a::after,
.nav-menu > li.nav-highlight > a::after {
  display: none !important;
}
/* 选中状态（进入彩页报价页面）或鼠标悬停时：切换为实心红橙渐变底色 + 纯白字体 */
.nav-menu li.nav-highlight.active > a,
.nav-menu > li.nav-highlight.active > a,
.nav-menu li.nav-highlight > a.active,
.nav-menu li.nav-highlight > a:hover,
.nav-menu > li.nav-highlight > a:hover {
  background: linear-gradient(135deg, #e11d48 0%, #ea580c 100%) !important;
  border-color: transparent !important;
  box-shadow: 0 4px 12px rgba(225, 29, 72, 0.32) !important;
}
.nav-menu li.nav-highlight.active > a .cn,
.nav-menu > li.nav-highlight.active > a .cn,
.nav-menu li.nav-highlight > a.active .cn,
.nav-menu li.nav-highlight > a:hover .cn,
.nav-menu > li.nav-highlight > a:hover .cn {
  color: #ffffff !important;
}
.nav-menu li.nav-highlight.active > a .en,
.nav-menu > li.nav-highlight.active > a .en,
.nav-menu li.nav-highlight > a.active .en,
.nav-menu li.nav-highlight > a:hover .en,
.nav-menu > li.nav-highlight > a:hover .en {
  color: rgba(255, 255, 255, 0.92) !important;
}
.mobile-nav-list li.nav-highlight a,
.mobile-nav-list a.nav-highlight {
  color: #e11d48 !important;
  font-weight: 800 !important;
  background: #fff1f2 !important;
}
.mobile-nav-list li.nav-highlight.active a,
.mobile-nav-list a.nav-highlight.active {
  color: #ffffff !important;
  background: linear-gradient(135deg, #e11d48 0%, #ea580c 100%) !important;
}