/* ========================================
   烽享财税 - 全局样式表
   主色调: 暖橙 #FF8C00
   辅助色: 深灰 #212121, 白 #FFF, 浅灰 #F5F5F5
   ======================================== */

/* --- CSS Variables --- */
:root {
  --primary: #FF8C00;
  --primary-light: #FFA940;
  --primary-dark: #E07800;
  --primary-bg: #FFF7ED;
  --text-primary: #212121;
  --text-secondary: #555555;
  --text-light: #888888;
  --bg-white: #FFFFFF;
  --bg-light: #F8F9FA;
  --bg-dark: #1A1A2E;
  --border-color: #E8E8E8;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --max-width: 1200px;
  --header-height: 72px;
  --transition: all 0.3s ease;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text-primary);
  background: var(--bg-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--primary);
  color: #FFFFFF;
}

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

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

ul, ol { list-style: none; }

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

/* --- Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.site-header.scrolled {
  border-bottom-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.logo svg {
  width: 36px;
  height: 36px;
}

.logo span {
  color: var(--primary);
}

/* --- Navigation --- */
.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.main-nav a {
  font-size: 15px;
  color: var(--text-secondary);
  position: relative;
  padding: 4px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--primary);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: var(--primary);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255,140,0,0.3);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: transparent;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  border: 2px solid var(--primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.btn-outline:hover {
  background: var(--primary);
  color: #FFFFFF;
  transform: translateY(-1px);
}

/* --- Mobile Menu --- */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
  border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-white);
  z-index: 999;
  padding: 24px;
  flex-direction: column;
  gap: 0;
  overflow-y: auto;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  display: block;
  padding: 16px 0;
  font-size: 16px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--primary);
}

.mobile-nav .mobile-cta {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* --- Hero Section --- */
.hero {
  padding-top: calc(var(--header-height) + 80px);
  padding-bottom: 80px;
  background: linear-gradient(135deg, var(--primary-bg) 0%, #FFFFFF 50%, var(--primary-bg) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,140,0,0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero-text h1 .highlight {
  color: var(--primary);
  position: relative;
}

.hero-text p {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
}

.hero-stat {
  text-align: center;
}

.hero-stat .number {
  font-size: 36px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.hero-stat .hero-suffix {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  line-height: 1;
}

.hero-stat .number-wrap {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
}

.hero-stat .label {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 6px;
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hex-grid {
  position: relative;
  width: 100%;
  max-width: 500px;
  aspect-ratio: 1;
}

.hex-grid svg {
  width: 100%;
  height: 100%;
}

/* --- Section Shared --- */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header .eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
}

.section-header h2 .highlight {
  color: var(--primary);
}

.section-header p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Services Section --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.service-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 18px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-bg);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--primary);
}

.service-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}

.service-link:hover {
  gap: 10px;
}

/* --- Stats Section --- */
.stats-section {
  background: var(--bg-dark);
  color: #FFFFFF;
  padding: 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item .stat-number {
  display: inline;
  font-size: 42px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.stat-item .stat-suffix {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  line-height: 1;
  vertical-align: top;
}

.stat-item .stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  margin-top: 8px;
}

/* --- Advantages Section --- */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.advantage-card {
  padding: 32px;
  background: var(--bg-light);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.advantage-card:hover {
  background: var(--bg-white);
  box-shadow: var(--shadow-md);
}

.advantage-card .adv-icon {
  width: 48px;
  height: 48px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.advantage-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.advantage-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* --- Industries Section --- */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}

.industry-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px 16px;
  background: var(--bg-light);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.industry-item:hover {
  background: var(--primary-bg);
  transform: translateY(-2px);
}

.industry-item .ind-icon {
  width: 44px;
  height: 44px;
  color: var(--primary);
}

.industry-item span {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 80px 0;
  text-align: center;
  color: #FFFFFF;
}

.cta-section h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 16px;
  opacity: 0.9;
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section .btn-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: #FFFFFF;
  color: var(--primary);
  font-size: 16px;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.cta-section .btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

/* --- Footer --- */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  color: #FFFFFF;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #FFFFFF;
}
.footer-social .social-link { position: relative; }
.qr-tooltip {
  position: absolute;
  bottom: 50px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  width: 160px;
  padding: 8px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  z-index: 100;
}
.qr-tooltip img { width: 100%; display: block; border-radius: 4px; }
.qr-tooltip::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  border-width: 6px 6px 0;
  border-style: solid;
  border-color: #fff transparent transparent;
}
.footer-social .social-link:hover .qr-tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.footer-col h4 {
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 20px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  padding: 6px 0;
  color: rgba(255,255,255,0.6);
}

.footer-col a:hover {
  color: var(--primary);
}

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

.footer-bottom a {
  color: rgba(255,255,255,0.5);
}

.footer-bottom a:hover {
  color: var(--primary);
}

/* --- Contact Form --- */
.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact-form .full-width {
  grid-column: 1 / -1;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  transition: var(--transition);
  background: var(--bg-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255,140,0,0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* --- Animations --- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero-text h1 {
    font-size: 36px;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .hero-visual {
    max-width: 400px;
    margin: 0 auto;
  }
  
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .industries-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }
  
  .main-nav,
  .header-cta .btn-phone {
    display: none;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .hero {
    padding-top: calc(var(--header-height) + 40px);
    padding-bottom: 40px;
  }
  
  .hero-text h1 {
    font-size: 28px;
  }
  
  .hero-text p {
    font-size: 15px;
  }
  
  .hero-stat .number {
    font-size: 28px;
  }
  
  .section {
    padding: 56px 0;
  }
  
  .section-header h2 {
    font-size: 28px;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  
  .advantages-grid {
    grid-template-columns: 1fr;
  }
  
  .industries-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
  
  .contact-form {
    grid-template-columns: 1fr;
  }
  
  .cta-section h2 {
    font-size: 28px;
  }
}