/* ============================================
   BoonTemp 博恩智远 官网 — 全局样式
   设计基准：1920px 桌面视口 / 1440px 内容容器
   真实配色取自 Sketch 设计稿
   ============================================ */

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

:root {
  /* Colors from Sketch design */
  --primary: #2563EB;          /* 主蓝 */
  --primary-dark: #1E40AF;
  --primary-light: #EFF4FF;
  --primary-lighter: #DBEAFE;
  --brand-blue: #316FDF;       /* Brand tag color */
  --brand-blue-2: #165DFF;     /* Nav link color */
  --dark-navy: #1E3A5F;        /* 深藏青（标题/深色区）*/
  --darker: #1A1A2E;           /* 主文字 */
  --text-secondary: #5F5F64;
  --text-muted: #6B7280;
  --gray-100: #F5F7FA;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --border: #E5E7EB;
  --white: #FFFFFF;
  --green: #009D41;            /* 认证徽章 */
  --green-light: #E8F7EE;
  --purple: #9B59AB;
  --orange: #EB791B;
  --red: #D10C12;
  --cyan: #00ADC2;

  /* Layout */
  --container: 1440px;
  --container-narrow: 1200px;
  --nav-height: 80px;

  /* Spacing scale */
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-8: 32px;
  --sp-10: 40px;
  --sp-12: 48px;
  --sp-16: 64px;
  --sp-20: 80px;
  --sp-24: 96px;
  --sp-32: 128px;

  /* Radius */
  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-full: 999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(30,58,95,0.06);
  --shadow-md: 0 8px 24px rgba(30,58,95,0.08);
  --shadow-lg: 0 20px 48px rgba(30,58,95,0.12);
  --shadow-xl: 0 32px 64px rgba(30,58,95,0.16);

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior:smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
               "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--darker);
  background: var(--white);
  min-width: 1280px;   /* 官网桌面下限 */
  -webkit-font-smoothing: antialiased;
}

a { color:inherit; text-decoration:none; }
img { max-width:100%; height:auto; display:block; }
button { font-family:inherit; cursor:pointer; border:none; background:none; }
ul { list-style:none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 60px;
}
.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 60px;
}

/* ===========================
   顶部导航栏 — 1920x80 (Sketch 尺寸)
   =========================== */
.navbar {
  position: sticky; top: 0; z-index: 100;
  height: var(--nav-height);
  background: rgba(255,255,255,0.9);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(30,58,95,0.06);
}
.navbar-inner {
  height: 100%;
  display: flex; align-items: center; justify-content: space-between;
}
.logo {
  display: flex; align-items: center;
  color: var(--dark-navy);
}
.logo-img {
  height: 36px;
  width: auto;
  display: block;
}
.logo-icon { display: none; }
.nav-links {
  display: flex; gap: 40px;
}
.nav-links a {
  font-size: 15px; font-weight: 500;
  color: var(--text-secondary);
  transition: color .2s var(--ease);
  position: relative; padding: 8px 0;
}
.nav-links a:hover { color: var(--primary); }
.nav-links a.active { color: var(--brand-blue-2); font-weight: 600; }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -8px;
  height: 2px; background: var(--brand-blue-2); border-radius: 2px;
}

/* ===== 二级下拉菜单 ===== */
.nav-links .has-submenu {
  position: relative;
}
.nav-links .caret {
  font-size: 10px;
  margin-left: 2px;
  display: inline-block;
  transition: transform .2s var(--ease);
}
.nav-links .has-submenu:hover > a .caret { transform: rotate(180deg); }
.nav-links .submenu {
  position: absolute;
  top: 100%;
  left: -16px;
  min-width: 220px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 8px 0;
  margin-top: 8px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all .2s var(--ease);
  z-index: 200;
}
.nav-links .has-submenu:hover .submenu,
.nav-links .has-submenu:focus-within .submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-links .submenu li { margin: 0; }
.nav-links .submenu a {
  display: block;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: background .15s var(--ease), color .15s var(--ease);
}
.nav-links .submenu a:hover {
  background: var(--primary-light);
  color: var(--primary);
}
.nav-links .submenu a::after { display: none; }

.nav-cta {
  padding: 10px 24px;
  background: var(--primary);
  color: white;
  border-radius: var(--r-full);
  font-size: 14px; font-weight: 600;
  transition: all .2s var(--ease);
}
.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37,99,235,0.35);
}

/* ===========================
   HERO — 大屏首屏 (min-height 720px)
   =========================== */
.hero {
  position: relative;
  padding: 100px 0 120px;
  background:
    radial-gradient(ellipse 60% 60% at 15% 20%, rgba(37,99,235,0.08), transparent),
    radial-gradient(ellipse 50% 50% at 85% 80%, rgba(0,196,204,0.06), transparent),
    linear-gradient(180deg, #F7FAFF 0%, #FFFFFF 100%);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 80px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px;
  background: white;
  border: 1px solid var(--primary-lighter);
  color: var(--primary);
  border-radius: var(--r-full);
  font-size: 13px; font-weight: 600;
  margin-bottom: 28px;
  box-shadow: var(--shadow-sm);
}
.hero-eyebrow::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--primary);
  animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100% { opacity:1 } 50% { opacity:.35 } }

.hero h1 {
  font-size: 64px;
  line-height: 1.1;
  font-weight: 800;
  color: var(--dark-navy);
  margin-bottom: 28px;
  letter-spacing: -0.02em;
}
.hero h1 .gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--brand-blue) 50%, var(--cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 560px;
}
.hero-actions {
  display: flex; gap: 16px; flex-wrap: wrap;
  margin-bottom: 48px;
}
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 15px 32px;
  border-radius: var(--r-full);
  font-size: 15px; font-weight: 600;
  transition: all .2s var(--ease);
  cursor: pointer;
}
.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 14px rgba(37,99,235,0.35);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(37,99,235,0.4);
}
.btn-ghost {
  background: white;
  color: var(--dark-navy);
  border: 1.5px solid var(--gray-300);
}
.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.stat-num {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}
.stat-num span { font-size: 20px; margin-left: 2px; }
.stat-label {
  font-size: 13px;
  color: var(--text-muted);
}
.hero-visual { position: relative; }
.hero-image {
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  background: linear-gradient(135deg, #F7FAFF, #E5EDFF);
}
.hero-image img {
  width: 100%; display: block;
}

/* ===========================
   通用 SECTION
   =========================== */
.section {
  padding: 100px 0;
}
.section-gray { background: var(--gray-100); }
.section-dark {
  background:
    radial-gradient(ellipse at top, rgba(37,99,235,0.15), transparent 60%),
    var(--dark-navy);
  color: white;
}
.section-dark .section-head h2 { color: white; }
.section-dark .section-head p { color: rgba(255,255,255,0.7); }

.section-head {
  text-align: center;
  margin-bottom: 72px;
}
.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--r-full);
  font-size: 13px; font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}
.section-dark .section-tag {
  background: rgba(37,99,235,0.15);
  color: #60A5FA;
}
.section-head h2 {
  font-size: 44px;
  font-weight: 800;
  color: var(--dark-navy);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
  line-height: 1.2;
}
.section-head p {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===========================
   产品矩阵 — 4 列
   =========================== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.product-card {
  background: white;
  border-radius: var(--r-xl);
  padding: 32px 28px 28px;
  box-shadow: var(--shadow-sm);
  transition: all .3s var(--ease);
  position: relative;
  overflow: hidden;
  display: flex; flex-direction: column;
  min-height: 460px;
  border: 1px solid transparent;
}
.product-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--cyan));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-lighter);
}
.product-card:hover::before { transform: scaleX(1); }

.product-thumb {
  background: linear-gradient(135deg, #F5F9FF, #E6F0FF);
  border-radius: var(--r-md);
  height: 200px;
  display: grid; place-items: center;
  margin-bottom: 24px;
  overflow: hidden;
  padding: 20px;
}
.product-thumb img {
  max-height: 100%;
  max-width: 100%;
  width: auto;
  object-fit: contain;
  transition: transform .4s var(--ease);
}
.product-card:hover .product-thumb img {
  transform: scale(1.05);
}
.product-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary-light);
  color: var(--brand-blue);
  font-size: 12px; font-weight: 700;
  border-radius: var(--r-full);
  margin-bottom: 12px;
  align-self: flex-start;
  font-family: -apple-system, "Helvetica Neue", Arial, sans-serif;
}
.product-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--darker);
  margin-bottom: 10px;
}
.product-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex: 1;
}
.product-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 600;
  color: var(--primary);
  transition: gap .2s var(--ease);
}
.product-link::after { content: "→"; transition: transform .2s var(--ease); }
.product-link:hover { gap: 10px; }

/* ===========================
   使用模式 — 2 列大卡
   =========================== */
.mode-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.mode-card {
  border-radius: var(--r-xl);
  padding: 48px 44px;
  position: relative;
  overflow: hidden;
  min-height: 480px;
  display: flex; flex-direction: column;
}
.mode-light {
  background: white;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.mode-dark {
  background: linear-gradient(135deg, var(--dark-navy), #0F1F3A);
  color: white;
}
.mode-tag {
  display: inline-block; align-self: flex-start;
  padding: 6px 18px;
  border-radius: var(--r-full);
  font-size: 13px; font-weight: 700;
  margin-bottom: 20px;
}
.mode-light .mode-tag { background: var(--primary-light); color: var(--primary); }
.mode-dark .mode-tag { background: rgba(255,255,255,0.15); color: white; }
.mode-card h3 {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 24px;
  line-height: 1.3;
}
.mode-img {
  border-radius: var(--r-md);
  overflow: hidden;
  margin-bottom: 24px;
  background: var(--gray-100);
}
.mode-dark .mode-img { background: rgba(255,255,255,0.08); }
.mode-img img { width: 100%; display: block; }
.mode-light h3 { color: var(--dark-navy); }
.mode-card ul { flex: 1; }
.mode-card li {
  padding: 10px 0 10px 28px;
  position: relative;
  font-size: 15px;
  line-height: 1.7;
}
.mode-card li::before {
  content: "✓"; position: absolute; left: 0; top: 10px;
  width: 20px; height: 20px; border-radius: 50%;
  display: grid; place-items: center;
  font-size: 12px; font-weight: 700;
}
.mode-light li::before { background: var(--primary-light); color: var(--primary); }
.mode-dark li::before { background: rgba(96,165,250,0.2); color: #60A5FA; }
.mode-note {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid;
  font-size: 13px;
  opacity: 0.7;
}
.mode-light .mode-note { border-color: var(--border); color: var(--text-muted); }
.mode-dark .mode-note { border-color: rgba(255,255,255,0.15); }

/* ===========================
   优势 KPI — 4 列
   =========================== */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.advantage-item {
  padding: 36px 28px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  transition: all .3s var(--ease);
}
.advantage-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-lighter);
}
.advantage-num {
  font-size: 40px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.advantage-num span { font-size: 22px; margin-left: 2px; font-weight: 700; }
.advantage-item h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--darker);
  margin-bottom: 10px;
}
.advantage-item p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===========================
   对比表 — 全宽表格
   =========================== */
.compare-table-wrap {
  background: white;
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
}
.compare-table th,
.compare-table td {
  padding: 18px 24px;
  text-align: left;
  font-size: 15px;
  border-bottom: 1px solid var(--border);
}
.compare-table thead th {
  background: var(--gray-100);
  color: var(--dark-navy);
  font-weight: 700;
  font-size: 15px;
}
.compare-table thead th.hl {
  background: var(--primary);
  color: white;
  font-size: 16px;
}
.compare-table td.hl {
  background: rgba(37,99,235,0.04);
  color: var(--darker);
  font-weight: 600;
}
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table tbody tr:hover td { background: rgba(37,99,235,0.02); }
.compare-table td:first-child { font-weight: 600; color: var(--dark-navy); }

/* ===========================
   APP 平台 — 2x4
   =========================== */
.app-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.app-feature {
  padding: 32px 28px;
  background: white;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  transition: all .3s var(--ease);
}
.app-feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-lighter);
}
.app-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  display: grid; place-items: center;
  color: white; font-size: 22px; font-weight: 700;
  margin-bottom: 20px;
}
.app-feature h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--darker);
  margin-bottom: 10px;
}
.app-feature p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ===========================
   行业方案 — 4 列
   =========================== */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.industry-card {
  padding: 28px 24px;
  background: white;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  transition: all .3s var(--ease);
  display: block;
  position: relative;
}
.industry-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}
.industry-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary-light), #FFF);
  display: grid; place-items: center;
  font-size: 26px;
  margin-bottom: 16px;
  border: 1px solid var(--border);
}
.industry-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--dark-navy);
  margin-bottom: 8px;
}
.industry-card p {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
}
.industry-badge {
  display: inline-block;
  padding: 3px 10px;
  background: var(--green-light);
  color: var(--green);
  font-size: 11.5px;
  font-weight: 700;
  border-radius: var(--r-full);
}

/* ===========================
   数据大屏预览
   =========================== */
.dashboard-preview {
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  background: white;
  border: 1px solid var(--border);
}
.dashboard-preview img { width: 100%; display: block; }

/* ===========================
   定制服务 — 3 列
   =========================== */
.custom-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.custom-card {
  padding: 40px 32px;
  border-radius: var(--r-xl);
  background: white;
  border: 1px solid var(--border);
}
.custom-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--dark-navy);
  margin-bottom: 16px;
}
.custom-card > p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}
.custom-card ul li {
  padding: 8px 0 8px 24px;
  font-size: 14px;
  color: var(--text-secondary);
  position: relative;
}
.custom-card ul li::before {
  content: "•"; position: absolute; left: 8px; color: var(--primary); font-weight: 700;
}
.custom-bonus {
  background: linear-gradient(135deg, var(--primary), var(--brand-blue));
  color: white;
}
.custom-bonus h3 { color: white; }
.custom-bonus .bonus-list li { color: rgba(255,255,255,0.95); padding-left: 0; }
.custom-bonus .bonus-list li::before { content: none; }

/* ===========================
   CTA 底部行动区
   =========================== */
.cta-box {
  background: linear-gradient(135deg, var(--primary) 0%, var(--brand-blue) 50%, #1E40AF 100%);
  border-radius: var(--r-xl);
  padding: 80px 60px;
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-box::before, .cta-box::after {
  content: ""; position: absolute; border-radius: 50%;
  background: rgba(255,255,255,0.08);
}
.cta-box::before { width: 400px; height: 400px; top: -150px; right: -100px; }
.cta-box::after  { width: 260px; height: 260px; bottom: -80px; left: -60px; }
.cta-box h2 {
  font-size: 44px;
  font-weight: 800;
  margin-bottom: 16px;
  position: relative;
  letter-spacing: -0.01em;
}
.cta-box > p {
  font-size: 18px;
  opacity: 0.95;
  margin-bottom: 40px;
  position: relative;
}
.cta-contact {
  position: relative;
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 32px;
  flex-wrap: wrap;
  font-size: 16px;
}
.cta-contact .cta-line {
  padding: 10px 20px;
  background: rgba(255,255,255,0.15);
  border-radius: var(--r-full);
  backdrop-filter: blur(10px);
}
.cta-box .btn-primary {
  background: white; color: var(--primary);
}
.cta-box .btn-primary:hover {
  background: var(--gray-100);
}
.cta-box .btn-ghost {
  background: transparent;
  color: white;
  border-color: rgba(255,255,255,0.4);
}
.cta-box .btn-ghost:hover {
  border-color: white;
  background: rgba(255,255,255,0.1);
  color: white;
}

/* ===========================
   FOOTER
   =========================== */
.footer {
  background: #0A1330;
  color: rgba(255,255,255,0.6);
  padding: 72px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 48px;
}
.footer h5 {
  color: white;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 20px;
}
.footer li { margin-bottom: 12px; }
.footer a {
  font-size: 14px;
  transition: color .2s var(--ease);
}
.footer a:hover { color: #60A5FA; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-top: 16px;
  max-width: 340px;
}
.footer-brand .logo { color: white; margin-bottom: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
}

/* ===========================
   产品详情页
   =========================== */
.page-hero {
  background: linear-gradient(135deg, var(--dark-navy) 0%, #0F1F3A 50%, var(--primary-dark) 100%);
  color: white;
  padding: 100px 0 120px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 40% 40% at 10% 30%, rgba(96,165,250,0.15), transparent),
    radial-gradient(ellipse 40% 40% at 90% 70%, rgba(0,196,204,0.15), transparent);
}
.page-hero .container { position: relative; z-index: 1; }
.breadcrumb {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 32px;
}
.breadcrumb a { color: rgba(255,255,255,0.8); }
.breadcrumb a:hover { color: white; }
.breadcrumb .sep { margin: 0 8px; opacity: 0.5; }

.page-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.page-hero-text h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.page-hero-text .model {
  display: inline-block;
  font-size: 16px;
  font-weight: 600;
  color: #60A5FA;
  background: rgba(96,165,250,0.15);
  padding: 6px 16px;
  border-radius: var(--r-full);
  margin-bottom: 24px;
  font-family: -apple-system, "Helvetica Neue", Arial, sans-serif;
}
.page-hero-text .lead {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
}
.page-hero-badges {
  display: flex; flex-wrap: wrap; gap: 12px;
  margin-bottom: 40px;
}
.hero-badge {
  padding: 8px 16px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--r-full);
  font-size: 13px;
  font-weight: 600;
  backdrop-filter: blur(10px);
}
.page-hero-image {
  border-radius: var(--r-xl);
  overflow: hidden;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
  padding: 40px;
  border: 1px solid rgba(255,255,255,0.15);
  backdrop-filter: blur(20px);
}
.page-hero-image img { width: 100%; }

/* KPI strip 产品页顶部核心亮点 */
.hero-kpi-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  background: white;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-top: -60px;
  position: relative;
  z-index: 2;
}
.kpi-item {
  padding: 28px 24px;
  text-align: center;
  border-right: 1px solid var(--border);
}
.kpi-item:last-child { border-right: none; }
.kpi-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}
.kpi-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

/* Feature grid 产品页特性 */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-item {
  padding: 36px 32px;
  background: white;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  transition: all .3s var(--ease);
}
.feature-item:hover {
  transform: translateY(-4px);
  border-color: var(--primary-lighter);
  box-shadow: var(--shadow-md);
}
.feature-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  display: grid; place-items: center;
  color: white; font-size: 24px; font-weight: 700;
  margin-bottom: 20px;
}
.feature-item h4 {
  font-size: 19px;
  font-weight: 700;
  color: var(--dark-navy);
  margin-bottom: 12px;
}
.feature-item p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* 规格表 */
.specs-wrap {
  background: white;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.specs-table {
  width: 100%;
  border-collapse: collapse;
}
.specs-table tr:not(:last-child) { border-bottom: 1px solid var(--border); }
.specs-table td {
  padding: 18px 32px;
  font-size: 15px;
  vertical-align: middle;
}
.specs-table td:first-child {
  width: 240px;
  color: var(--text-muted);
  background: var(--gray-100);
  font-weight: 500;
}
.specs-table td:last-child {
  color: var(--darker);
  font-weight: 500;
}

/* 场景网格 4 列 */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.scene-card {
  padding: 28px 24px;
  background: white;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  text-align: left;
  transition: all .3s var(--ease);
}
.scene-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}
.scene-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--primary-light);
  display: grid; place-items: center;
  font-size: 22px;
  margin-bottom: 16px;
}
.scene-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--dark-navy);
  margin-bottom: 6px;
}
.scene-card p {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 工作原理 / 步骤流程 */
.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.flow-item {
  background: white;
  padding: 32px 28px;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  text-align: center;
  position: relative;
}
.flow-num {
  width: 48px; height: 48px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--brand-blue));
  color: white;
  display: grid; place-items: center;
  font-size: 20px; font-weight: 800;
  box-shadow: 0 4px 12px rgba(37,99,235,0.3);
}
.flow-item h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark-navy);
  margin-bottom: 12px;
}
.flow-item p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 安装方式 3 列 */
.install-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.install-card {
  padding: 40px 32px;
  background: white;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  text-align: center;
}
.install-emoji {
  font-size: 48px;
  margin-bottom: 20px;
}
.install-card h4 {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark-navy);
  margin-bottom: 12px;
}
.install-card p {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 说明书页专用 */
.manual-section h3 {
  font-size: 24px;
  font-weight: 800;
  color: var(--dark-navy);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary-light);
}
.package-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.package-item {
  background: white;
  padding: 32px 28px;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  text-align: center;
}
.package-item .qty {
  display: inline-block;
  padding: 4px 14px;
  background: var(--primary);
  color: white;
  border-radius: var(--r-full);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 12px;
}
.package-item h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--dark-navy);
}

.faq-list { display: flex; flex-direction: column; gap: 16px; }
.faq-item {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 24px 28px;
}
.faq-q {
  font-size: 17px;
  font-weight: 700;
  color: var(--dark-navy);
  margin-bottom: 10px;
}
.faq-a {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 说明书表格 */
.manual-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}
.manual-table th {
  background: var(--dark-navy);
  color: white;
  padding: 16px 20px;
  text-align: left;
  font-size: 14px;
  font-weight: 700;
}
.manual-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 14.5px;
  color: var(--text-secondary);
  vertical-align: top;
}
.manual-table td:first-child {
  font-weight: 600;
  color: var(--dark-navy);
  width: 220px;
}
.manual-table tr:last-child td { border-bottom: none; }

/* 响应式 (只处理平板 & 小桌面) */
@media (max-width: 1440px) {
  .container { padding: 0 40px; }
  .hero h1 { font-size: 56px; }
  .section-head h2 { font-size: 38px; }
  .page-hero-text h1 { font-size: 48px; }
}
@media (max-width: 1280px) {
  body { min-width: 1024px; }
  .container { padding: 0 32px; }
  .hero { padding: 80px 0 100px; }
  .hero h1 { font-size: 48px; }
  .hero-grid { gap: 48px; }
  .section { padding: 80px 0; }
  .section-head { margin-bottom: 56px; }
  .section-head h2 { font-size: 34px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .industry-grid { grid-template-columns: repeat(3, 1fr); }
  .scene-grid { grid-template-columns: repeat(3, 1fr); }
  .flow-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .custom-grid { grid-template-columns: 1fr; }
  .hero-kpi-strip { grid-template-columns: repeat(2, 1fr); }
  .kpi-item:nth-child(2) { border-right: none; }
  .kpi-item:nth-child(1), .kpi-item:nth-child(2) { border-bottom: 1px solid var(--border); }
}