/* ============================================================
   河南中天环保设备制造有限公司 - GEO分站首页样式
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --c-primary: #0E4D92;
  --c-primary-light: #1E88E5;
  --c-accent: #2E9E5C;
  --c-accent-light: #E8F5E9;
  --c-blue-light: #EAF3FB;
  --c-text: #1F2A37;
  --c-text-sub: #5B6675;
  --c-bg: #FFFFFF;
  --c-bg-soft: #F7FAFC;
  --c-border: #E5EAF0;
  --c-white: #FFFFFF;
  --c-dark: #0A2E54;

  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 8px rgba(14, 77, 146, 0.06);
  --shadow: 0 8px 24px rgba(14, 77, 146, 0.10);
  --shadow-hover: 0 16px 40px rgba(14, 77, 146, 0.16);
  --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);

  --container: 1400px;
  --header-h: 76px;
}

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

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

h1, h2, h3, h4 { color: var(--c-text); font-weight: 600; line-height: 1.3; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
  cursor: pointer;
  line-height: 1.4;
}
.btn-lg { padding: 15px 36px; font-size: 16px; }
.btn-block { width: 100%; }

.btn-outline {
  background: var(--c-white);
  color: var(--c-primary);
  border: 1.5px solid var(--c-primary-light);
}
.btn-outline:hover {
  background: var(--c-primary);
  color: var(--c-white);
  border-color: var(--c-primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(14, 77, 146, 0.25);
}

.btn-primary {
  background: var(--c-primary);
  color: var(--c-white);
  box-shadow: 0 4px 14px rgba(14, 77, 146, 0.3);
}
.btn-primary:hover {
  background: var(--c-primary-light);
  box-shadow: 0 6px 20px rgba(30, 136, 229, 0.4);
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.12);
  color: var(--c-white);
  border: 1.5px solid rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(4px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: var(--c-white);
  transform: translateY(-2px);
}

/* ---------- Section common ---------- */
.section { padding: 90px 0; }
.section:nth-child(even) { background: var(--c-bg-soft); }

.section-more { text-align: center; margin-top: 48px; }

.section-head { text-align: center; margin-bottom: 56px; }
.section-eyebrow {
  display: inline-block;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--c-primary-light);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-size: 32px;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 16px;
}
.section-subtitle {
  font-size: 15px;
  color: var(--c-text-sub);
  max-width: 560px;
  margin: 16px auto 0;
}

.title-bar {
  display: flex;
  gap: 4px;
  margin-top: 8px;
}
.title-bar.center { justify-content: center; }
.title-bar span:first-child {
  width: 32px; height: 3px;
  background: var(--c-primary-light);
  border-radius: 2px;
}
.title-bar span:last-child {
  width: 12px; height: 3px;
  background: var(--c-accent);
  border-radius: 2px;
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  z-index: 2000;
  border-bottom: 1px solid var(--c-border);
  transition: var(--transition);
}
.header.scrolled {
  box-shadow: 0 2px 20px rgba(14, 77, 146, 0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 24px;
}

.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon { flex-shrink: 0; }
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-cn {
  font-size: 19px;
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: 1px;
}
.logo-en {
  font-size: 9px;
  color: var(--c-text-sub);
  letter-spacing: 1.5px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  margin-top: 2px;
}

.nav { display: block; }
.nav-list { display: flex; align-items: center; gap: 4px; margin: 0; padding: 0; list-style: none; }
.nav-item { position: relative; }
.nav-link {
  padding: 8px 14px;
  font-size: 15px;
  color: var(--c-text);
  border-radius: 6px;
  position: relative;
  font-weight: 500;
}
.nav-link:hover { color: var(--c-primary-light); }
.nav-link.active { color: var(--c-primary); font-weight: 600; }
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 50%;
  transform: translateX(-50%);
  width: 20px; height: 2px;
  background: var(--c-accent);
  border-radius: 2px;
}

/* ---------- 二级下拉菜单 ---------- */
.nav-has-dropdown { display: inline-flex; }
.nav-has-dropdown > .nav-link::after {
  content: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="10" height="10" viewBox="0 0 24 24" fill="none" stroke="%235B6675" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><polyline points="6 9 12 15 18 9"/></svg>');
  opacity: 0;
}
.nav-has-dropdown {
  padding: 8px 4px;
}
.nav-has-dropdown > .nav-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.nav-has-dropdown > .nav-link .caret {
  display: inline-flex;
  align-items: center;
  transition: transform var(--transition);
}
.nav-has-dropdown:hover > .nav-link .caret { transform: rotate(180deg); }
.dropdown {
  position: absolute;
  top: calc(100% + 2px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 148px;
  margin: 0;
  padding: 8px;
  list-style: none;
  background: #ffffff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  box-shadow: 0 12px 32px rgba(14, 77, 146, 0.14);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 1200;
}
.nav-has-dropdown:hover .dropdown,
.nav-has-dropdown:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.dropdown-link {
  display: block;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--c-text);
  border-radius: 6px;
  white-space: nowrap;
  transition: var(--transition);
}
.dropdown-link:hover {
  background: var(--c-blue-light);
  color: var(--c-primary);
  padding-left: 18px;
}

.header-contact {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--c-blue-light);
  border-radius: var(--radius-sm);
  color: var(--c-primary);
  flex-shrink: 0;
}
.header-contact svg { color: var(--c-accent); flex-shrink: 0; }
.header-contact-text { display: flex; flex-direction: column; line-height: 1.2; }
.header-contact-label { font-size: 11px; color: var(--c-text-sub); }
.header-phone {
  font-family: "DIN Alternate", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: 0.5px;
}
.header-phone:hover { color: var(--c-primary-light); }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 1100;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-primary);
  border-radius: 2px;
  transition: var(--transition);
}
.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 560px;
  margin-top: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  background: linear-gradient(135deg, #0E4D92 0%, #1E88E5 55%, #2E9E5C 100%);
  overflow: hidden;
}
/* 装饰性光斑，增强渐变层次 */
.hero::before {
  content: '';
  position: absolute;
  top: -120px; right: -80px;
  width: 460px; height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -100px; left: -60px;
  width: 380px; height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46,158,92,0.22) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  color: var(--c-white);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero-badge {
  display: inline-block;
  padding: 7px 20px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 100px;
  font-size: 14px;
  margin-bottom: 28px;
  backdrop-filter: blur(6px);
  letter-spacing: 0.5px;
}
.hero-title {
  font-size: 48px;
  font-weight: 700;
  color: var(--c-white);
  line-height: 1.25;
  margin-bottom: 22px;
  letter-spacing: 3px;
}
.hero-desc {
  font-size: 17px;
  line-height: 1.8;
  max-width: 680px;
  opacity: 0.92;
  margin-bottom: 40px;
}
.hero-hotline {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  width: 100%;
  max-width: 560px;
  text-align: center;
}
.hero-hotline-label {
  display: block;
  font-size: 13px;
  letter-spacing: 3px;
  opacity: 0.85;
  margin-bottom: 14px;
}
.hero-hotline-number {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: "DIN Alternate", "Helvetica Neue", Arial, sans-serif;
  font-size: 52px;
  font-weight: 700;
  color: var(--c-white);
  text-decoration: none;
  line-height: 1.1;
  letter-spacing: 1px;
  transition: opacity 0.25s cubic-bezier(0.4,0,0.2,1);
}
.hero-hotline-number svg {
  width: 34px;
  height: 34px;
  stroke-width: 1.8;
  opacity: 0.9;
}
.hero-hotline-number:hover {
  opacity: 0.85;
}
.hero-hotline-note {
  display: block;
  font-size: 13px;
  opacity: 0.75;
  margin-top: 16px;
  letter-spacing: 1px;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 12px;
  z-index: 5;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 6px); }
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
  align-items: center;
}
.about-media { position: relative; }
.about-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.about-img-wrap img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.about-experience {
  position: absolute;
  right: -20px; bottom: -20px;
  background: var(--c-primary);
  color: var(--c-white);
  padding: 20px 28px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow-hover);
  display: flex;
  align-items: center;
  gap: 12px;
}
.about-experience strong {
  font-family: "DIN Alternate", "Helvetica Neue", Arial, sans-serif;
  font-size: 48px;
  font-weight: 700;
  line-height: 1;
  color: var(--c-white);
}
.about-experience span {
  font-size: 13px;
  line-height: 1.5;
  text-align: left;
}

.about-badges {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 32px;
}
.about-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 12px;
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  text-align: center;
  font-size: 12px;
  color: var(--c-text-sub);
  line-height: 1.5;
  transition: var(--transition);
}
.about-badge:hover {
  border-color: var(--c-primary-light);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}
.about-badge svg { color: var(--c-accent); }

.about-text .section-eyebrow { display: block; }
.about-text .section-title { margin-top: 8px; }
.about-lead {
  font-size: 17px;
  line-height: 1.8;
  color: var(--c-text);
  margin: 24px 0 16px;
  font-weight: 500;
}
.about-body {
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-text-sub);
  margin-bottom: 28px;
}
.about-body strong { color: var(--c-primary); font-weight: 600; }

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 24px;
  margin-bottom: 32px;
}
.about-features li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.about-feature-icon {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--c-accent-light);
  color: var(--c-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}
.about-features strong {
  display: block;
  font-size: 15px;
  color: var(--c-text);
  margin-bottom: 2px;
}
.about-features p {
  font-size: 13px;
  color: var(--c-text-sub);
  line-height: 1.5;
}

/* ---------- Products ---------- */
.products { background: var(--c-bg-soft); }
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-card {
  background: var(--c-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--c-border);
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--c-blue-light);
}
.product-img {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--c-bg-soft);
}
.product-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.product-card:hover .product-img img { transform: scale(1.05); }
.product-tag {
  position: absolute;
  top: 14px; left: 14px;
  padding: 4px 12px;
  background: var(--c-primary);
  color: var(--c-white);
  font-size: 12px;
  border-radius: 4px;
  font-weight: 500;
}
.product-tag.green { background: var(--c-accent); }

.product-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.product-body h3 {
  font-size: 18px;
  color: var(--c-text);
  margin-bottom: 10px;
  font-weight: 600;
}
.product-body p {
  font-size: 14px;
  color: var(--c-text-sub);
  line-height: 1.7;
  margin-bottom: 18px;
  flex: 1;
}
.product-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--c-border);
}
.product-meta span {
  font-size: 13px;
  color: var(--c-primary);
  font-weight: 500;
  font-family: "DIN Alternate", "Helvetica Neue", Arial, sans-serif;
}
.product-link {
  font-size: 13px;
  color: var(--c-accent);
  font-weight: 500;
}
.product-link:hover { color: var(--c-primary-light); }

/* ---------- Guide ---------- */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.guide-card {
  display: block;
  padding: 32px;
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.guide-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--c-primary-light);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.3s ease;
}
.guide-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--c-blue-light);
}
.guide-card:hover::before { transform: scaleY(1); }
.guide-card-cat {
  display: inline-block;
  padding: 4px 12px;
  background: var(--c-blue-light);
  color: var(--c-primary);
  font-size: 12px;
  font-weight: 500;
  border-radius: 4px;
  margin-bottom: 16px;
}
.guide-card-cat.green { background: var(--c-accent-light); color: var(--c-accent); }
.guide-card h3 {
  font-size: 19px;
  color: var(--c-text);
  margin-bottom: 12px;
  line-height: 1.5;
  transition: var(--transition);
}
.guide-card:hover h3 { color: var(--c-primary); }
.guide-card p {
  font-size: 14px;
  color: var(--c-text-sub);
  line-height: 1.8;
  margin-bottom: 20px;
}
.guide-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px dashed var(--c-border);
}
.guide-date { font-size: 13px; color: var(--c-text-sub); }
.guide-read {
  font-size: 13px;
  color: var(--c-accent);
  font-weight: 500;
}

/* ---------- Cases ---------- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.case-card {
  background: var(--c-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--c-border);
}
.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.case-img {
  position: relative;
  aspect-ratio: 16/11;
  overflow: hidden;
}
.case-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.case-card:hover .case-img img { transform: scale(1.06); }
.case-location {
  position: absolute;
  bottom: 14px; left: 14px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  background: rgba(14, 77, 146, 0.9);
  color: var(--c-white);
  font-size: 12px;
  border-radius: 4px;
  backdrop-filter: blur(6px);
}
.case-body { padding: 24px; }
.case-industry {
  display: inline-block;
  padding: 3px 10px;
  background: var(--c-blue-light);
  color: var(--c-primary);
  font-size: 12px;
  border-radius: 4px;
  margin-bottom: 12px;
}
.case-industry.green { background: var(--c-accent-light); color: var(--c-accent); }
.case-body h3 {
  font-size: 18px;
  margin-bottom: 10px;
  line-height: 1.5;
}
.case-body p {
  font-size: 14px;
  color: var(--c-text-sub);
  line-height: 1.75;
  margin-bottom: 16px;
}
.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.case-tags span {
  padding: 4px 10px;
  background: var(--c-bg-soft);
  color: var(--c-text-sub);
  font-size: 12px;
  border-radius: 4px;
  border: 1px solid var(--c-border);
}

.case-cta {
  margin-top: 48px;
  padding: 32px 40px;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-light) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.case-cta p {
  color: var(--c-white);
  font-size: 17px;
}
.case-cta strong { font-weight: 600; }
.case-cta .btn-primary {
  background: var(--c-white);
  color: var(--c-primary);
  box-shadow: 0 4px 14px rgba(0,0,0,0.15);
}
.case-cta .btn-primary:hover {
  background: var(--c-accent-light);
  color: var(--c-accent);
}

/* ---------- FAQ ---------- */
.faq-container { max-width: var(--container); }
.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open {
  border-color: var(--c-primary-light);
  box-shadow: var(--shadow-sm);
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  text-align: left;
  font-size: 16px;
  font-weight: 500;
  color: var(--c-text);
}
.faq-q:hover { color: var(--c-primary); }
.faq-q-text { flex: 1; }
.faq-icon {
  flex-shrink: 0;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--c-blue-light);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease, background 0.3s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--c-accent);
  color: var(--c-white);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-a-inner {
  padding: 0 24px 22px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-text-sub);
}

/* ---------- Contact ---------- */
.contact { background: var(--c-bg-soft); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 56px;
  align-items: start;
}
.contact-info .section-eyebrow { display: block; }
.contact-info .section-title { margin-top: 8px; }
.contact-lead {
  font-size: 16px;
  color: var(--c-text-sub);
  line-height: 1.8;
  margin: 20px 0 32px;
}
.contact-list { display: flex; flex-direction: column; gap: 20px; margin-bottom: 32px; }
.contact-list li { display: flex; gap: 16px; align-items: flex-start; }
.contact-icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--c-blue-light);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.contact-list li:nth-child(2) .contact-icon { background: var(--c-accent-light); color: var(--c-accent); }
.contact-label {
  display: block;
  font-size: 12px;
  color: var(--c-text-sub);
  margin-bottom: 2px;
}
.contact-value {
  font-size: 15px;
  color: var(--c-text);
}
.contact-value.strong {
  font-family: "DIN Alternate", "Helvetica Neue", Arial, sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: 0.5px;
}
a.contact-value:hover { color: var(--c-primary-light); }

.contact-qr {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}
.qr-placeholder {
  width: 72px; height: 72px;
  background: var(--c-blue-light);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-qr strong { display: block; font-size: 15px; color: var(--c-text); margin-bottom: 2px; }
.contact-qr span { font-size: 13px; color: var(--c-text-sub); }

/* Form */
.contact-form-wrap {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
  border: 1px solid var(--c-border);
}
.contact-form h3 {
  font-size: 22px;
  color: var(--c-primary);
  margin-bottom: 6px;
}
.contact-form-tip {
  font-size: 14px;
  color: var(--c-text-sub);
  margin-bottom: 28px;
}
.contact-form-tip strong { color: var(--c-accent); font-weight: 600; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-text);
  margin-bottom: 8px;
}
.form-group label em { color: #E53935; font-style: normal; margin-left: 2px; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--c-text);
  background: var(--c-white);
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--c-primary-light);
  box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.12);
}
.form-group input.error,
.form-group textarea.error {
  border-color: #E53935;
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-error {
  display: block;
  font-size: 12px;
  color: #E53935;
  margin-top: 4px;
  min-height: 16px;
}
.form-privacy {
  text-align: center;
  font-size: 12px;
  color: var(--c-text-sub);
  margin-top: 14px;
}
.form-privacy a { color: var(--c-primary-light); }
.form-privacy a:hover { text-decoration: underline; }

.form-success {
  text-align: center;
  padding: 32px 16px;
}
.form-success svg { margin-bottom: 16px; }
.form-success h4 { font-size: 20px; color: var(--c-accent); margin-bottom: 8px; }
.form-success p { font-size: 14px; color: var(--c-text-sub); line-height: 1.7; }

.contact-form.submitted .form-row,
.contact-form.submitted .form-group,
.contact-form.submitted button[type="submit"],
.contact-form.submitted .form-privacy,
.contact-form.submitted h3,
.contact-form.submitted .contact-form-tip { display: none; }
.contact-form.submitted .form-success { display: block; }

/* ---------- Footer ---------- */
.footer {
  background: var(--c-dark);
  color: rgba(255, 255, 255, 0.7);
  padding-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .footer-logo { margin-bottom: 18px; }
.footer-logo .logo-en { color: rgba(255,255,255,0.5); }
.footer-about {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 20px;
}
.footer-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.footer-tags span {
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 4px;
  font-size: 12px;
}
.footer-col h4 {
  color: var(--c-white);
  font-size: 16px;
  margin-bottom: 20px;
  font-weight: 600;
}
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
}
.footer-col ul li a:hover { color: var(--c-white); padding-left: 4px; }
.footer-col p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 8px;
}
.footer-phone {
  font-family: "DIN Alternate", "Helvetica Neue", Arial, sans-serif;
  font-size: 22px !important;
  font-weight: 700;
  color: var(--c-white) !important;
  margin-bottom: 12px !important;
  letter-spacing: 0.5px;
}
.footer-hours {
  display: inline-block;
  margin-top: 8px;
  padding: 4px 10px;
  background: rgba(46, 158, 92, 0.2);
  color: #6EE7A0 !important;
  border-radius: 4px;
  font-size: 12px !important;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  right: 28px; bottom: 28px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--c-primary);
  color: var(--c-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
}
.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--c-primary-light);
  transform: translateY(-3px);
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive: Tablet ---------- */
@media (max-width: 1024px) {
  :root { --header-h: 68px; }
  .section { padding: 72px 0; }
  .section-title { font-size: 28px; }
  .hero { min-height: 480px; padding: 60px 24px; }
  .hero-title { font-size: 38px; letter-spacing: 2px; }
  .hero-desc { font-size: 16px; }

  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-experience { right: 20px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }

  .header-contact { display: none; }
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100dvh;
    max-height: 100dvh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    background: var(--c-white);
    flex-direction: column;
    align-items: stretch;
    padding: 90px 24px 32px;
    gap: 4px;
    box-shadow: -8px 0 30px rgba(0,0,0,0.1);
    transition: right 0.3s ease;
    z-index: 1050;
  }
  .nav.open { right: 0; }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 8px;
  }
  .nav-link {
    padding: 14px 16px;
    font-size: 16px;
    border-radius: 8px;
  }
  .nav-link.active::after { display: none; }
  .nav-link.active { background: var(--c-blue-light); }
  .menu-toggle { display: flex; }

  /* 移动端：二级菜单展开显示 */
  .nav-has-dropdown {
    display: flex;
    flex-direction: column;
    padding: 0;
  }
  .nav-has-dropdown > .nav-link {
    padding: 14px 16px;
    font-size: 16px;
    border-radius: 8px;
  }
  .nav-has-dropdown > .nav-link .caret { transform: rotate(0deg); }
  .dropdown {
    position: static;
    transform: none;
    min-width: 0;
    box-shadow: none;
    border: none;
    opacity: 1;
    visibility: visible;
    padding: 0 0 8px;
    display: none;
  }
  .nav-has-dropdown.open .dropdown {
    display: block;
    transform: none;
  }
  .dropdown-link { padding: 12px 26px; font-size: 15px; }
  .dropdown-link:hover { padding-left: 30px; }

  .nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 1040;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  .nav-overlay.show { opacity: 1; visibility: visible; }
}

/* ---------- Responsive: Mobile ---------- */
@media (max-width: 768px) {
  :root { --header-h: 60px; }
  .container { padding: 0 18px; }
  .section { padding: 56px 0; }
  .section-head { margin-bottom: 36px; }
  .section-title { font-size: 24px; }
  .section-subtitle { font-size: 14px; }

  .hero { min-height: 480px; padding: 56px 20px; }
  .hero-title { font-size: 28px; letter-spacing: 1px; }
  .hero-desc { font-size: 14.5px; margin-bottom: 28px; }
  .hero-badge { font-size: 12px; margin-bottom: 18px; padding: 6px 16px; }
  .hero-hotline { margin-top: 28px; padding-top: 24px; }
  .hero-hotline-number { font-size: 38px; }
  .hero-hotline-number svg { width: 26px; height: 26px; }
  .btn { padding: 11px 22px; font-size: 14px; }
  .btn-lg { padding: 13px 26px; font-size: 15px; }
  .hero-scroll-hint { display: none; }

  .about-features { grid-template-columns: 1fr; }
  .about-badges { grid-template-columns: 1fr; }
  .about-experience { right: 12px; bottom: 12px; padding: 14px 18px; }
  .about-experience strong { font-size: 36px; }

  .product-grid { grid-template-columns: 1fr; gap: 20px; }
  .guide-grid { grid-template-columns: 1fr; gap: 16px; }
  .guide-card { padding: 24px; }
  .guide-card h3 { font-size: 17px; }
  .case-grid { grid-template-columns: 1fr; gap: 20px; }
  .case-cta { padding: 24px; flex-direction: column; text-align: center; }
  .case-cta p { font-size: 15px; }

  .form-row { grid-template-columns: 1fr; gap: 0; }
  .contact-form-wrap { padding: 28px 22px; }
  .contact-value.strong { font-size: 20px; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding-bottom: 36px; }
  .footer-bottom-inner { justify-content: center; text-align: center; }

  .faq-q { padding: 16px 18px; font-size: 15px; }
  .faq-a-inner { padding: 0 18px 18px; font-size: 14px; }

  .back-to-top { right: 18px; bottom: 18px; width: 42px; height: 42px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 26px; }
  .hero-hotline-number { font-size: 30px; gap: 8px; }
  .logo-cn { font-size: 17px; }
  .logo-en { display: none; }
}

/* ---------- Advantages ---------- */
.advantages {
  background: var(--c-white);
}
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.advantage-card {
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.advantage-card::after {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 4px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  opacity: 0;
  transition: var(--transition);
}
.advantage-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--c-blue-light);
}
.advantage-card:hover::after { opacity: 1; }
.advantage-num {
  position: absolute;
  top: 20px; right: 24px;
  font-family: "DIN Alternate", "Helvetica Neue", Arial, sans-serif;
  font-size: 40px;
  font-weight: 700;
  color: var(--c-bg-soft);
  line-height: 1;
  transition: var(--transition);
}
.advantage-card:hover .advantage-num { color: var(--c-accent-light); }
.advantage-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  border-radius: 12px;
  background: var(--c-blue-light);
  color: var(--c-primary);
  margin-bottom: 18px;
  transition: var(--transition);
}
.advantage-card:hover .advantage-icon {
  background: var(--c-primary);
  color: var(--c-white);
}
.advantage-card h3 {
  font-size: 18px;
  color: var(--c-text);
  font-weight: 600;
  margin-bottom: 10px;
}
.advantage-card p {
  font-size: 14px;
  color: var(--c-text-sub);
  line-height: 1.7;
}
@media (max-width: 1024px) {
  .advantages-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}
@media (max-width: 768px) {
  .advantages-grid { grid-template-columns: 1fr; gap: 18px; }
  .advantage-card { padding: 26px 22px; }
  .advantage-icon { width: 50px; height: 50px; }
}


.pagelink{ height: 35px;text-align: center;margin: 50px 0 30px 0;*+margin-left:30px;}

.pagelink .page-index , .pagelink .page-pre , .pagelink .page-next , .pagelink .page-last{ list-style: none;border: 1px solid #C7CFC2; display: inline-block;margin: 0 3px;*+display:block;*+float:left;}

.pagelink .page-status {list-style: none;border: 1px solid #C7CFC2; display: inline-block;margin: 0 3px;*+display:block;*+float:left; padding: 3px 8px;}

.pagelink .page-index a, .pagelink .page-pre a, .pagelink .page-next a, .pagelink .page-last a{color:#000;padding: 3px 8px; display:block;}

.pagelink .page-numbar .page-num{ list-style: none;border: 1px solid #C7CFC2;padding: 3px 8px;display: inline-block;margin: 0 3px;*+display:block;*+float:left;}

.pagelink a.page-num-current, .pagelink a:hover{ background: #CCC;color: #FFF; display:block;}