/* ============================================================
   金蝶渠道商门户 - 主样式文件
   设计风格参考：www.jdy.com
   ============================================================ */

/* ---------- CSS 变量 ---------- */
:root {
  --primary: #F5501E;
  --primary-dark: #D63E0C;
  --primary-light: #FF7A4D;
  --primary-gradient: linear-gradient(135deg, #FF6A00, #F5501E);
  --secondary: #1677FF;
  --secondary-dark: #0052D9;
  --text-dark: #1A1A1A;
  --text-body: #333333;
  --text-muted: #666666;
  --text-light: #999999;
  --bg-white: #FFFFFF;
  --bg-gray: #F7F8FA;
  --bg-dark: #1A1A2E;
  --border: #E5E5E5;
  --border-light: #F0F0F0;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.14);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.25s ease;
  --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --navbar-height: 68px;
  --container-max: 1280px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  color: var(--text-body);
  background: var(--bg-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

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

ul {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: var(--font);
  border: none;
  outline: none;
}

/* ---------- 通用容器 ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #fff;
  box-shadow: 0 4px 16px rgba(245,80,30,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245,80,30,0.45);
}
.btn-primary:active { transform: translateY(0); }

.btn-outline-primary {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline-primary:hover {
  background: var(--primary);
  color: #fff;
}

.btn-outline-white {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.7);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
}

.btn-white {
  background: #fff;
  color: var(--primary);
  font-weight: 600;
}
.btn-white:hover {
  background: #f8f8f8;
  transform: translateY(-2px);
}

.btn-ghost-white {
  background: transparent;
  color: rgba(255,255,255,0.85);
}
.btn-ghost-white:hover { color: #fff; }

.btn-lg { padding: 14px 36px; font-size: 16px; }
.btn-sm { padding: 8px 18px; font-size: 13px; }
.btn-block { width: 100%; padding: 15px; font-size: 16px; }

/* 导航按钮特殊样式 */
.btn-primary-nav {
  background: var(--primary-gradient);
  color: #fff;
  border-radius: var(--radius-md);
  padding: 9px 20px;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
}
.btn-primary-nav:hover { opacity: 0.9; }

.btn-outline-nav {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
}
.btn-outline-nav:hover {
  background: var(--primary);
  color: #fff;
}

/* ---------- Section 通用 ---------- */
.section {
  padding: 80px 0;
}
.section-gray {
  background: var(--bg-gray);
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-tag {
  display: inline-block;
  background: rgba(245,80,30,0.08);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.35;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}
.section-footer-cta {
  text-align: center;
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.section-footer-cta p {
  color: var(--text-muted);
  margin-bottom: 20px;
  font-size: 15px;
}

/* ============================================================
   导航栏
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--navbar-height);
  transition: background 0.3s ease, box-shadow 0.3s ease;
  background: transparent;
}
.navbar.scrolled {
  background: rgba(255,255,255,0.98);
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
  backdrop-filter: blur(10px);
}
.navbar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}
.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-img {
  height: 34px;
  width: auto;
  object-fit: contain;
}
.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
}
.logo-badge {
  font-size: 11px;
  background: rgba(245,80,30,0.10);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 500;
  white-space: nowrap;
}
.navbar.scrolled .logo-badge { background: rgba(245,80,30,0.10); }

.navbar-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.nav-link {
  padding: 8px 16px;
  font-size: 15px;
  color: rgba(255,255,255,0.9);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  font-weight: 500;
}
.nav-link:hover { color: #fff; background: rgba(255,255,255,0.12); }
.navbar.scrolled .nav-link { color: var(--text-body); }
.navbar.scrolled .nav-link:hover { color: var(--primary); background: rgba(245,80,30,0.06); }

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.nav-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: rgba(255,255,255,0.85);
  font-weight: 500;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-phone:hover { color: #fff; }
.navbar.scrolled .nav-phone { color: var(--text-body); }
.navbar.scrolled .nav-phone:hover { color: var(--primary); }

/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: rgba(255,255,255,0.9);
  border-radius: 2px;
  transition: var(--transition);
}
.navbar.scrolled .hamburger span { background: var(--text-dark); }
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端菜单 */
.mobile-menu {
  display: none;
  flex-direction: column;
  background: #fff;
  padding: 16px 24px 24px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  border-top: 1px solid var(--border-light);
}
.mobile-menu.open { display: flex; }
.mobile-nav-link {
  padding: 14px 0;
  font-size: 16px;
  color: var(--text-body);
  border-bottom: 1px solid var(--border-light);
  font-weight: 500;
}
.mobile-nav-link:hover { color: var(--primary); }
.mobile-menu-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}
.mobile-btn { flex: 1; justify-content: center; }

/* ============================================================
   Hero Banner
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #1A1A2E 0%, #16213E 40%, #0F3460 70%, #1a3a6b 100%);
  z-index: 0;
}
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(245,80,30,0.18) 0%, transparent 60%),
              radial-gradient(ellipse at 20% 80%, rgba(22,119,255,0.15) 0%, transparent 50%);
}
.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(to bottom, transparent, var(--bg-white));
}
.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 60px;
  padding-top: var(--navbar-height);
  padding-bottom: 40px;
}
.hero-text { flex: 1; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.85);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  margin-bottom: 24px;
}
.hero-badge-logo { height: 20px; }

.hero-title {
  font-size: 48px;
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.text-gradient {
  background: linear-gradient(90deg, #FF9A3C, #FF5F1F, #FF3CAC);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 17px;
  color: rgba(255,255,255,0.72);
  line-height: 1.75;
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 28px;
}
.stat-item:first-child { padding-left: 0; }
.stat-num {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}
.stat-num em {
  font-style: normal;
  font-size: 16px;
  font-weight: 600;
  color: rgba(255,255,255,0.8);
}
.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  margin-top: 4px;
}
.stat-divider {
  width: 1px;
  height: 36px;
  background: rgba(255,255,255,0.18);
}
.hero-visual {
  flex: 0 0 480px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-img {
  width: 100%;
  max-width: 480px;
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 80px rgba(0,0,0,0.35);
  animation: floatY 4s ease-in-out infinite;
}
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.45);
  font-size: 12px;
  animation: bounce 2s ease-in-out infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ============================================================
   产品区域
   ============================================================ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.product-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 24px;
  color: #fff;
}
.product-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}
.product-card > p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
}
.product-features {
  flex: 1;
  margin-bottom: 24px;
}
.product-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-body);
  padding: 5px 0;
}
.product-features .fa-check {
  color: var(--primary);
  font-size: 11px;
  flex-shrink: 0;
}

/* ============================================================
   优势区域
   ============================================================ */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.advantage-item {
  text-align: center;
  padding: 36px 24px;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.advantage-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--primary);
}
.advantage-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, rgba(245,80,30,0.08), rgba(255,106,0,0.12));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 26px;
  color: var(--primary);
  transition: var(--transition);
}
.advantage-item:hover .advantage-icon {
  background: var(--primary-gradient);
  color: #fff;
}
.advantage-item h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}
.advantage-item p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============================================================
   行业解决方案
   ============================================================ */
.tabs-wrapper { }
.tabs {
  display: flex;
  gap: 8px;
  border-bottom: 2px solid var(--border);
  margin-bottom: 40px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 1px;
}
.tabs::-webkit-scrollbar { display: none; }
.tab-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  background: none;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: var(--transition);
}
.tab-btn:hover { color: var(--primary); }
.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}
.tab-content { display: none; }
.tab-content.active { display: block; }

.solution-layout {
  display: flex;
  gap: 60px;
  align-items: center;
}
.solution-info { flex: 1; }
.solution-info h3 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 14px;
}
.solution-pain {
  font-size: 14px;
  color: var(--text-muted);
  background: rgba(245,80,30,0.05);
  border-left: 3px solid var(--primary);
  padding: 10px 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 28px;
  line-height: 1.65;
}
.solution-points { margin-bottom: 32px; }
.solution-point {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}
.solution-point > i {
  color: var(--primary);
  font-size: 18px;
  margin-top: 2px;
  flex-shrink: 0;
}
.solution-point strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 4px;
}
.solution-point span {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}
.solution-image {
  flex: 0 0 440px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.solution-image img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

/* ============================================================
   案例区
   ============================================================ */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.case-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.case-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}
.case-img-wrap {
  position: relative;
  height: 200px;
  background: linear-gradient(135deg, #f0f0f0, #e0e0e0);
  overflow: hidden;
}
.case-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.case-card:hover .case-img-wrap img { transform: scale(1.06); }
.case-img-wrap.img-error {
  background: var(--primary-gradient);
}
.case-industry-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 12px;
}
.case-body {
  padding: 24px;
}
.case-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
}
.case-body > p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
}
.case-results {
  display: flex;
  gap: 0;
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
}
.result-item {
  flex: 1;
  text-align: center;
  padding: 0 8px;
}
.result-item + .result-item {
  border-left: 1px solid var(--border-light);
}
.result-num {
  display: block;
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}
.result-label {
  display: block;
  font-size: 11px;
  color: var(--text-light);
  margin-top: 3px;
  line-height: 1.3;
}

/* ============================================================
   认证区
   ============================================================ */
.certifications {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}
.cert-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px 28px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  min-width: 140px;
}
.cert-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
  transform: translateY(-3px);
}
.cert-item img {
  height: 48px;
  object-fit: contain;
}
.cert-item span {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  font-weight: 500;
}

/* ============================================================
   关于我们
   ============================================================ */
.about-layout {
  display: flex;
  gap: 80px;
  align-items: flex-start;
}
.about-info { flex: 1; }
.about-desc {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 32px;
}
.about-timeline { margin-bottom: 32px; }
.timeline-item {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
  align-items: flex-start;
}
.timeline-year {
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: var(--primary-gradient);
  padding: 4px 12px;
  border-radius: 12px;
}
.timeline-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  padding-top: 4px;
}
.about-contact { }
.contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  font-size: 14px;
  color: var(--text-body);
  border-bottom: 1px solid var(--border-light);
}
.contact-item:last-child { border-bottom: none; }
.contact-item .fa-solid {
  color: var(--primary);
  width: 16px;
  flex-shrink: 0;
}
.about-visual { flex: 0 0 380px; }
.about-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.about-num-card {
  border-radius: var(--radius-lg);
  padding: 32px 20px;
  text-align: center;
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.an-num {
  font-size: 32px;
  font-weight: 800;
  line-height: 1;
}
.an-label {
  font-size: 13px;
  opacity: 0.85;
}

/* ============================================================
   底部 CTA
   ============================================================ */
.cta-section {
  background: linear-gradient(135deg, #1A1A2E, #16213E, #0F3460);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 100%, rgba(245,80,30,0.15) 0%, transparent 60%);
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.cta-section p {
  font-size: 16px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 40px;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: #111827;
  color: rgba(255,255,255,0.6);
}
.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding: 60px 24px 48px;
}
.footer-brand .footer-logo {
  height: 32px;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.5);
  margin-bottom: 20px;
}
.footer-social {
  display: flex;
  gap: 12px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 16px;
  transition: var(--transition);
}
.footer-social a:hover {
  background: var(--primary);
  color: #fff;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  margin-bottom: 20px;
}
.footer-col ul li {
  padding: 6px 0;
  font-size: 13px;
}
.footer-col ul li a {
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}
.footer-col ul li a:hover { color: #fff; }
.footer-col ul li i {
  color: var(--primary);
  width: 16px;
  margin-right: 6px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 24px;
}
.footer-bottom p {
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.35);
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: rgba(255,255,255,0.85); }

/* ============================================================
   弹窗表单
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  backdrop-filter: blur(4px);
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}
.modal-container {
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  padding: 40px;
  transform: scale(0.92) translateY(20px);
  transition: transform 0.3s ease;
  box-shadow: 0 24px 80px rgba(0,0,0,0.25);
}
.modal-overlay.active .modal-container {
  transform: scale(1) translateY(0);
}
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  background: var(--bg-gray);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-muted);
  transition: var(--transition);
}
.modal-close:hover {
  background: var(--primary);
  color: #fff;
}
.modal-header {
  text-align: center;
  margin-bottom: 32px;
}
.modal-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-gradient);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: #fff;
  margin: 0 auto 16px;
}
.modal-header h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
}
.modal-header p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dark);
  margin-bottom: 8px;
}
.required { color: var(--primary); }
.optional { color: var(--text-light); font-size: 12px; font-weight: 400; }
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-family: var(--font);
  color: var(--text-dark);
  background: var(--bg-white);
  transition: var(--transition);
  outline: none;
  resize: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(245,80,30,0.10);
}
.form-group input.error,
.form-group textarea.error {
  border-color: #E74C3C;
  box-shadow: 0 0 0 3px rgba(231,76,60,0.10);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-light);
}
.form-error {
  font-size: 12px;
  color: #E74C3C;
  margin-top: 5px;
  min-height: 16px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.form-char-count {
  text-align: right;
  font-size: 12px;
  color: var(--text-light);
  margin-top: 4px;
}
.form-privacy {
  text-align: center;
  font-size: 12px;
  color: var(--text-light);
  margin-top: 12px;
  line-height: 1.6;
}
.form-privacy a { color: var(--secondary); }

/* 成功视图 */
.success-content {
  text-align: center;
  padding: 20px 0;
}

/* ============================================================
   二维码试用弹窗
   ============================================================ */
.qrcode-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  padding: 8px 0 16px;
}
.qrcode-frame {
  position: relative;
  width: 200px;
  height: 200px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  border: 2px solid var(--border);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}
.qrcode-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.qrcode-placeholder {
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-light);
  text-align: center;
  padding: 16px;
}
.qrcode-placeholder i {
  font-size: 48px;
  color: var(--border);
}
.qrcode-placeholder span {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
}
.qrcode-placeholder small {
  font-size: 11px;
  color: var(--text-light);
  line-height: 1.5;
}
.qrcode-tips {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
}
.qrcode-tip-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-body);
  background: var(--bg-gray);
  padding: 10px 16px;
  border-radius: var(--radius-md);
}
.qrcode-tip-item i {
  color: var(--primary);
  width: 18px;
  flex-shrink: 0;
  font-size: 15px;
}
.qrcode-tip-item .fa-weixin { color: #07C160; }
@media (max-width: 768px) {
  .qrcode-frame { width: 160px; height: 160px; }
}
.success-icon {
  font-size: 64px;
  color: #27AE60;
  margin-bottom: 20px;
  animation: scaleIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
@keyframes scaleIn {
  from { transform: scale(0); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}
.success-content h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}
.success-content p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 8px;
}
.success-tip { font-size: 14px !important; margin-bottom: 28px !important; }
.phone-link {
  color: var(--primary);
  font-weight: 600;
}

/* ============================================================
   回到顶部按钮
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--primary-gradient);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: 0 4px 16px rgba(245,80,30,0.4);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  z-index: 999;
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: all;
}
.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(245,80,30,0.5);
}

/* ============================================================
   响应式 - 平板 (≤1024px)
   ============================================================ */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-visual { flex: 0 0 360px; }
  .hero-title { font-size: 38px; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 32px; }
  .about-layout { flex-direction: column; gap: 40px; }
  .about-visual { width: 100%; flex: none; }
  .solution-image { flex: 0 0 340px; }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   响应式 - 手机 (≤768px)
   ============================================================ */
@media (max-width: 768px) {
  :root { --navbar-height: 60px; }

  .container { padding: 0 16px; }
  .section { padding: 56px 0; }
  .section-title { font-size: 24px; }
  .section-desc { font-size: 14px; }
  .section-header { margin-bottom: 36px; }

  /* 导航 */
  .navbar-menu { display: none; }
  .nav-phone > span { display: none; }
  .btn-primary-nav, .btn-outline-nav { display: none; }
  .hamburger { display: flex; }

  /* Hero */
  .hero-content { flex-direction: column; gap: 32px; padding-top: calc(var(--navbar-height) + 20px); padding-bottom: 60px; }
  .hero-visual { display: none; }
  .hero-title { font-size: 28px; }
  .hero-desc { font-size: 15px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { justify-content: center; }
  .hero-stats { gap: 0; }
  .stat-item { padding: 0 14px; }
  .stat-num { font-size: 22px; }

  /* Products */
  .products-grid { grid-template-columns: 1fr; }

  /* Advantages */
  .advantages-grid { grid-template-columns: 1fr; gap: 16px; }
  .advantage-item { padding: 24px; }

  /* Solutions */
  .tabs { gap: 4px; }
  .tab-btn { padding: 10px 14px; font-size: 13px; }
  .solution-layout { flex-direction: column-reverse; gap: 28px; }
  .solution-image { flex: none; width: 100%; }
  .solution-image img { height: 220px; }

  /* Cases */
  .cases-grid { grid-template-columns: 1fr; }

  /* About */
  .about-card-grid { grid-template-columns: 1fr 1fr; }

  /* CTA */
  .cta-section h2 { font-size: 24px; }
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-actions .btn { width: 100%; max-width: 320px; }

  /* Footer */
  .footer-main { grid-template-columns: 1fr; gap: 28px; padding: 40px 16px 32px; }

  /* Modal */
  .modal-container { padding: 28px 20px; border-radius: var(--radius-lg); }
  .modal-header h2 { font-size: 19px; }

  /* Certifications */
  .certifications { gap: 12px; }
  .cert-item { min-width: 120px; padding: 18px 16px; }

  /* Back to top */
  .back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 24px; }
  .hero-stats { flex-wrap: wrap; justify-content: center; }
  .stat-divider { display: none; }
  .stat-item { flex: 0 0 50%; padding: 10px 16px; }
}