@charset "UTF-8";

:root {
  --primary: #0066cc;
  --primary-dark: #004999;
  --accent: #00b894;
  --accent-light: #55efc4;
  --text-dark: #2d3436;
  --text-gray: #636e72;
  --bg-white: #ffffff;
  --bg-light: #f8f9fa;
  --bg-dark: #1a1f25;
  --border: #e1e5e8;
  --shadow: 0 4px 20px rgba(0,102,204,0.12);
  --shadow-lg: 0 10px 40px rgba(0,102,204,0.2);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: var(--text-dark);
  background: var(--bg-white);
  line-height: 1.6;
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animated,
.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ==================== 导航栏 ==================== */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s;
}

.main-header.scrolled { box-shadow: var(--shadow); }

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 15px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo img { height: 45px; }

.header-nav {
  position: relative;
}

.header-nav > ul {
  display: flex;
  list-style: none;
  gap: 5px;
}

.header-nav > ul > li > a {
  display: block;
  padding: 10px 20px;
  color: var(--text-dark);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  border-radius: 10px;
  transition: all 0.2s;
}

.header-nav > ul > li > a:hover,
.header-nav > ul > li > a.active,
.nav-projects:hover > a,
.nav-projects:focus-within > a {
  color: var(--primary);
  background: rgba(0,102,204,0.08);
}

.nav-projects {
  position: static;
}

.project-mega-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  z-index: 1200;
  width: min(920px, calc(100vw - 40px));
  padding-top: 14px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(-50%) translateY(8px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
}

.nav-projects:hover .project-mega-menu,
.nav-projects:focus-within .project-mega-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.project-menu-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 16px;
  background: rgba(255,255,255,0.98);
  border: 1px solid rgba(0,102,204,0.12);
  border-radius: 8px;
  box-shadow: 0 18px 45px rgba(12,37,64,0.16);
  backdrop-filter: blur(12px);
}

.project-menu-card {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  min-height: 94px;
  padding: 10px;
  color: var(--text-dark);
  text-decoration: none;
  border-radius: 8px;
  background: #fff;
  border: 1px solid rgba(0,102,204,0.08);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.project-menu-card:hover {
  color: var(--text-dark);
  border-color: rgba(0,102,204,0.28);
  box-shadow: 0 10px 24px rgba(0,102,204,0.12);
  transform: translateY(-2px);
}

.project-menu-card img {
  display: block;
  width: 108px;
  height: 74px;
  object-fit: cover;
  border-radius: 6px;
}

.project-menu-card span {
  min-width: 0;
}

.project-menu-card em {
  display: block;
  margin-bottom: 3px;
  color: var(--primary);
  font-size: 12px;
  font-style: normal;
  font-weight: 600;
  line-height: 1.25;
}

.project-menu-card strong {
  display: block;
  margin-bottom: 3px;
  color: var(--text-dark);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.3;
}

.project-menu-card p {
  margin: 0;
  color: var(--text-gray);
  font-size: 12px;
  line-height: 1.45;
}

@media (max-width: 992px) {
  .project-mega-menu {
    width: min(680px, calc(100vw - 24px));
  }

  .project-menu-panel {
    grid-template-columns: 1fr;
    max-height: calc(100vh - 110px);
    overflow-y: auto;
  }
}

@media (max-width: 640px) {
  .project-mega-menu {
    width: calc(100vw - 20px);
  }

  .project-menu-panel {
    gap: 8px;
    padding: 10px;
  }

  .project-menu-card {
    grid-template-columns: 86px minmax(0, 1fr);
    min-height: 82px;
    padding: 8px;
  }

  .project-menu-card img {
    width: 86px;
    height: 62px;
  }

  .project-menu-card strong {
    font-size: 14px;
  }

  .project-menu-card p {
    display: none;
  }
}

.btn-consult {
  padding: 10px 24px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 10px;
  transition: all 0.3s;
}

.btn-consult:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

/* ==================== 首屏震撼大图 ==================== */
.hero-banner {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.banner-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #0a2f4c;
  background-image: url("../images/optimized/home-hero-1920.jpg");
  background-size: cover;
  background-position: center;
  filter: brightness(0.5);
}

@media (max-width: 768px) {
  .banner-bg {
    background-image: url("../images/optimized/home-hero-1200.jpg");
  }
}

.banner-gradient {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0,102,204,0.7) 0%, rgba(0,184,148,0.6) 100%);
}

.banner-content {
  position: relative;
  z-index: 10;
  text-align: center;
  color: #fff;
  padding: 0 20px;
}

.banner-title {
  font-size: clamp(38px, 6vw, 68px);
  font-weight: 700;
  margin-bottom: 25px;
  letter-spacing: 3px;
  text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.banner-subtitle {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 300;
  margin-bottom: 40px;
  opacity: 0.95;
  letter-spacing: 6px;
}

.banner-services {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin-bottom: 45px;
}

.bs-item {
  padding: 12px 28px;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 30px;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.3s;
}

.bs-item:hover {
  background: rgba(255,255,255,0.3);
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.banner-cta {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.btn-primary, .btn-outline {
  padding: 16px 40px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 30px;
  transition: all 0.3s;
}

.btn-primary {
  background: #fff;
  color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid #fff;
}

.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  transform: translateY(-3px);
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
}

.scroll-line {
  width: 2px;
  height: 60px;
  background: rgba(255,255,255,0.5);
  position: relative;
  overflow: hidden;
  border-radius: 2px;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 20px;
  background: #fff;
  border-radius: 2px;
  animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
  0%, 100% { top: 0; opacity: 1; }
  50% { top: 40px; opacity: 0.3; }
}

/* ==================== 公司简介 + 企业资质（合并版） ==================== */
.section-about-qual {
  background: var(--bg-white);
  padding: 100px 0;
}

.aq-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 60px;
  align-items: start;
}

.section-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 2px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 10px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 30px;
}

.company-intro {
  margin-bottom: 30px;
}

.intro-main {
  font-size: 17px;
  color: var(--text-dark);
  font-weight: 500;
  line-height: 1.9;
  margin-bottom: 20px;
}

.intro-detail {
  font-size: 15px;
  color: var(--text-gray);
  line-height: 2;
}

.company-stats-simple {
  display: flex;
  gap: 30px;
  margin-top: 35px;
  padding-top: 30px;
  border-top: 1px solid var(--border);
}

.stat-item-simple {
  flex: 1;
}

.stat-item-simple strong {
  display: block;
  font-size: 20px;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 5px;
}

.stat-item-simple span {
  font-size: 13px;
  color: var(--text-gray);
}

/* 企业资质 */
.aq-right {
  background: linear-gradient(135deg, var(--bg-light), #e8f4f8);
  padding: 35px;
  border-radius: 20px;
}

.qual-header {
  margin-bottom: 25px;
  padding-bottom: 15px;
  border-bottom: 2px solid var(--border);
}

.qual-header h3 {
  font-size: 22px;
  color: var(--text-dark);
}

.qual-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.qual-item {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px;
  background: #fff;
  border-radius: 12px;
  transition: all 0.3s;
}

.qual-item:hover {
  transform: translateX(5px);
  box-shadow: var(--shadow);
}

.qual-item.iso {
  background: linear-gradient(135deg, rgba(0,102,204,0.08), rgba(0,184,148,0.08));
}

.qi-icon {
  font-size: 32px;
}

.qi-content strong {
  display: block;
  font-size: 15px;
  color: var(--text-dark);
  margin-bottom: 3px;
}

.qi-content p {
  font-size: 12px;
  color: var(--text-gray);
}

@media (max-width: 992px) {
  .aq-grid { grid-template-columns: 1fr; }
}

/* ==================== 项目分布地图 ==================== */
.section-map {
  background: var(--bg-light);
  padding: 80px 0;
}

.section-header-center {
  text-align: center;
  margin-bottom: 50px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-gray);
  margin-top: 10px;
}

.map-container {
  position: relative;
  max-width: 600px;
  margin: 0 auto;
  background: #fff;
  border-radius: 20px;
  padding: 40px;
  box-shadow: var(--shadow);
}

.sichuan-map {
  width: 100%;
  height: auto;
}

.province-path {
  fill: none;
  stroke: rgba(0,102,204,0.3);
  stroke-width: 2;
  stroke-dasharray: 5,5;
  animation: dashPath 20s linear infinite;
}

@keyframes dashPath {
  to { stroke-dashoffset: -100; }
}

.project-point {
  cursor: pointer;
}

.point-ring {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
  animation: ringPulse 2s ease-in-out infinite;
}

.point-core {
  fill: var(--primary);
}

.point-label, .point-label-sm {
  fill: var(--text-dark);
  font-size: 14px;
  font-weight: 600;
  text-anchor: middle;
}

.point-label-sm {
  font-size: 11px;
  fill: var(--text-gray);
}

@keyframes ringPulse {
  0%, 100% { 
    r: 12;
    opacity: 1;
  }
  50% { 
    r: 18;
    opacity: 0.5;
  }
}

.pulse-ring {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
  opacity: 0;
  animation: pulseWave 3s ease-out infinite;
}

.pulse-ring.delay-1 { animation-delay: 1s; }
.pulse-ring.delay-2 { animation-delay: 2s; }

@keyframes pulseWave {
  0% {
    r: 15;
    opacity: 0.8;
  }
  100% {
    r: 35;
    opacity: 0;
  }
}

.project-info-popup {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--bg-dark);
  color: #fff;
  padding: 20px;
  border-radius: 12px;
  opacity: 0;
  transform: translateY(-10px);
  transition: all 0.3s;
  pointer-events: none;
}

.project-info-popup.active {
  opacity: 1;
  transform: translateY(0);
}

.project-info-popup h4 {
  font-size: 16px;
  margin-bottom: 8px;
}

.project-info-popup p {
  font-size: 13px;
  opacity: 0.9;
}

/* ==================== 成为清洁能源专家（项目动画展示） ==================== */
.section-vision-impact {
  background: linear-gradient(135deg, #0a1e3d 0%, #1a3a5c 100%);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.vision-header {
  text-align: center;
  margin-bottom: 60px;
}

.vision-label {
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 3px;
  font-weight: 700;
  display: block;
  margin-bottom: 15px;
}

.vision-title {
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 700;
  color: #fff;
  margin: 0;
}

.project-showcase {
  position: relative;
  overflow: hidden;
}

.showcase-stage {
  position: relative;
  height: 400px;
}

.showcase-track {
  position: relative;
  height: 100%;
}

.showcase-item {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 50px;
  opacity: 0;
  transform: translateX(100px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.showcase-item.active {
  opacity: 1;
  transform: translateX(0);
}

.si-image {
  flex: 1;
  height: 100%;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.si-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.si-content {
  flex: 1;
  color: #fff;
  padding: 40px;
}

.si-badge {
  display: inline-block;
  padding: 8px 20px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  font-size: 12px;
  font-weight: 700;
  border-radius: 20px;
  margin-bottom: 20px;
}

.si-content h3 {
  font-size: 32px;
  margin-bottom: 20px;
  font-weight: 700;
}

.si-content p {
  font-size: 16px;
  opacity: 0.9;
  line-height: 1.8;
}

.showcase-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  margin-top: 40px;
}

.sc-prev, .sc-next {
  width: 50px;
  height: 50px;
  background: rgba(255,255,255,0.1);
  border: 2px solid rgba(255,255,255,0.3);
  color: #fff;
  border-radius: 50%;
  cursor: pointer;
  font-size: 24px;
  transition: all 0.3s;
}

.sc-prev:hover, .sc-next:hover {
  background: var(--accent);
  border-color: var(--accent);
}

.sc-dots {
  display: flex;
  gap: 12px;
}

.sc-dot {
  width: 12px;
  height: 12px;
  background: rgba(255,255,255,0.3);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s;
}

.sc-dot.active {
  background: var(--accent);
  transform: scale(1.3);
}

@media (max-width: 992px) {
  .showcase-item {
    flex-direction: column;
    gap: 30px;
  }
  
  .si-image, .si-content {
    flex: none;
    width: 100%;
  }
  
  .si-image {
    height: 250px;
  }
}

/* ==================== 经营理念 + 企业精神 + 照片墙 ==================== */
.section-values-photos {
  background: var(--bg-white);
  padding: 80px 0;
}

.values-block {
  margin-bottom: 60px;
}

.vb-header {
  margin-bottom: 30px;
}

.vb-label {
  font-size: 11px;
  color: var(--primary);
  letter-spacing: 2px;
  font-weight: 700;
  display: block;
  margin-bottom: 8px;
}

.vb-header h3 {
  font-size: 28px;
  color: var(--text-dark);
}

.philosophy-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

.pc-item {
  background: linear-gradient(135deg, var(--bg-light), #e8f4f8);
  padding: 30px 25px;
  border-radius: 20px;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 2px solid transparent;
}

.pc-item:hover {
  transform: translateY(-10px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.pc-icon {
  font-size: 40px;
  margin-bottom: 15px;
}

.pc-item strong {
  display: block;
  font-size: 18px;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.pc-item p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.6;
}

/* 企业精神 + 照片墙 */
.spirit-photos-block {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  margin-top: 80px;
}

.spirit-items {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.spirit-item {
  background: var(--bg-light);
  padding: 25px;
  border-radius: 15px;
  transition: all 0.3s;
}

.spirit-item:hover {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
}

.spirit-item strong {
  display: block;
  font-size: 24px;
  margin-bottom: 8px;
}

.spirit-item p {
  font-size: 14px;
  color: var(--text-gray);
  margin: 0;
}

.spirit-item:hover p {
  color: rgba(255,255,255,0.9);
}

/* 照片墙 */
.photo-wall {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, 180px);
  gap: 15px;
}

.pw-item {
  position: relative;
  border-radius: 15px;
  overflow: hidden;
  cursor: pointer;
}

.pw-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s;
}

.pw-item:hover img {
  transform: scale(1.15);
}

.pw-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px;
  background: linear-gradient(transparent, rgba(0,102,204,0.9));
  color: #fff;
  transform: translateY(100%);
  transition: transform 0.4s;
}

.pw-item:hover .pw-overlay {
  transform: translateY(0);
}

.pw-overlay span {
  font-size: 14px;
  font-weight: 600;
}

@media (max-width: 992px) {
  .philosophy-cards { grid-template-columns: repeat(2, 1fr); }
  .spirit-photos-block { grid-template-columns: 1fr; }
  .photo-wall {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 200px);
  }
}

@media (max-width: 576px) {
  .philosophy-cards { grid-template-columns: 1fr; }
  .spirit-items { grid-template-columns: 1fr; }
  .photo-wall { grid-template-columns: 1fr; }
}

/* ==================== 应用场景（增强冲击力） ==================== */
.section-scenarios-impact {
  background: linear-gradient(135deg, #0a1e3d 0%, #1a3a5c 100%);
  padding: 80px 0;
}

.section-header-between {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 40px;
}

.section-header-between .section-label {
  color: var(--accent);
}

.section-header-between .section-title {
  color: #fff;
  margin-bottom: 0;
}

.section-header-between .section-subtitle {
  color: rgba(255,255,255,0.7);
  margin: 5px 0 0;
}

.btn-more-link {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s;
}

.scenarios-scroll-container {
  position: relative;
  overflow: hidden;
  margin-top: 30px;
}

.scenarios-scroll-track {
  display: flex;
  gap: 30px;
  animation: scrollLeft 50s linear infinite;
  width: max-content;
}

.scenarios-scroll-container:hover .scenarios-scroll-track {
  animation-play-state: paused;
}

@keyframes scrollLeft {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* 增强版卡片 */
.scenario-card-impact {
  flex-shrink: 0;
  width: 420px;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.15);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.scenario-card-impact:hover {
  transform: translateY(-15px) scale(1.03);
  border-color: var(--accent);
  box-shadow: 0 25px 60px rgba(0,184,148,0.3);
}

.sci-image {
  position: relative;
  width: 100%;
  height: 240px;
  overflow: hidden;
}

.sci-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.scenario-card-impact:hover .sci-image img {
  transform: scale(1.2);
}

.sci-badge {
  position: absolute;
  top: 20px;
  left: 20px;
  padding: 8px 18px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  border-radius: 20px;
  box-shadow: 0 5px 20px rgba(0,0,0,0.3);
}

.sci-content {
  padding: 25px;
  color: #fff;
}

.sci-content h4 {
  font-size: 20px;
  margin-bottom: 12px;
  font-weight: 700;
}

.sci-content p {
  font-size: 14px;
  opacity: 0.85;
  line-height: 1.7;
}

/* ==================== 公众号联动 ==================== */
.section-wechat {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  padding: 60px 0;
}

.wechat-connection {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 40px;
}

.wc-info {
  color: #fff;
  flex: 1;
  min-width: 300px;
}

.wc-info h3 {
  font-size: 28px;
  margin-bottom: 15px;
}

.wc-info p {
  font-size: 16px;
  opacity: 0.95;
}

.wc-qr {
  text-align: center;
  color: #fff;
}

.wc-qr img {
  width: 150px;
  height: 150px;
  border-radius: 10px;
  border: 3px solid rgba(255,255,255,0.5);
  margin-bottom: 12px;
}

.wc-qr p {
  font-size: 14px;
  opacity: 0.9;
}

/* ==================== 页脚 ==================== */
.main-footer {
  background: var(--bg-dark);
  color: #b0b8c0;
}

.footer-top {
  padding: 50px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
}

.footer-brand img {
  height: 50px;
  margin-bottom: 15px;
  filter: brightness(1.2);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
}

.footer-links h5 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 20px;
}

.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 12px; }

.footer-links a {
  color: #b0b8c0;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--accent); }

.footer-contact p {
  font-size: 14px;
  margin-bottom: 12px;
}

.footer-contact strong { color: #fff; }

.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
}

.footer-bottom a {
  color: var(--accent);
  text-decoration: none;
}

@media (max-width: 992px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 576px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ==================== 微信悬浮 & 返回顶部 ==================== */
.wechat-float {
  position: fixed;
  right: 20px;
  bottom: 100px;
  z-index: 999;
}

.wechat-btn {
  width: 50px;
  height: 50px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform 0.3s;
}

.wechat-btn:hover { transform: scale(1.1); }

.wechat-btn svg {
  width: 24px;
  height: 24px;
  fill: #fff;
}

.wechat-qr {
  position: absolute;
  bottom: 60px;
  right: 0;
  background: #fff;
  padding: 15px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
}

.wechat-qr.active {
  opacity: 1;
  visibility: visible;
}

.qr-close {
  position: absolute;
  top: -10px;
  right: -10px;
  width: 24px;
  height: 24px;
  background: #ff4757;
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 16px;
}

.wechat-qr img {
  width: 140px;
  height: 140px;
  border-radius: 10px;
}

.wechat-qr p {
  margin-top: 10px;
  font-size: 13px;
  color: var(--text-gray);
}

.back-top {
  position: fixed;
  right: 20px;
  bottom: 40px;
  width: 45px;
  height: 45px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 998;
}

.back-top.active {
  opacity: 1;
  visibility: visible;
}

.back-top:hover { background: var(--primary-dark); }

/* ==================== ECharts地图样式 ==================== */
.map-wrapper {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
}

.echarts-map {
  width: 100%;
  height: 600px;
  border-radius: 20px;
  box-shadow: 0 10px 40px rgba(0,102,204,0.15);
}

/* 地图统计卡片 */
.map-stats {
  position: absolute;
  top: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  z-index: 10;
}

.stat-card {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  padding: 20px 25px;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0,102,204,0.1);
  text-align: center;
  min-width: 100px;
  border: 1px solid rgba(0,102,204,0.1);
  transition: all 0.3s;
}

.stat-card:hover {
  transform: translateX(-5px);
  box-shadow: 0 10px 30px rgba(0,102,204,0.2);
}

.stat-card strong {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 5px;
}

.stat-card span {
  font-size: 13px;
  color: var(--text-gray);
}

/* 项目列表网格 */
.project-list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.project-mini-card {
  background: var(--bg-white);
  padding: 20px;
  border-radius: 15px;
  display: flex;
  align-items: center;
  gap: 15px;
  box-shadow: var(--shadow);
  transition: all 0.3s;
  cursor: pointer;
  border: 2px solid transparent;
}

.project-mini-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.project-mini-card.highlighted {
  border-color: var(--accent);
  box-shadow: 0 10px 30px rgba(0,184,148,0.3);
}

.pmc-icon {
  font-size: 32px;
  width: 55px;
  height: 55px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0,102,204,0.1), rgba(0,184,148,0.1));
  border-radius: 12px;
  flex-shrink: 0;
}

.pmc-content strong {
  display: block;
  font-size: 15px;
  color: var(--text-dark);
  margin-bottom: 5px;
}

.pmc-content p {
  font-size: 13px;
  color: var(--text-gray);
  margin: 0;
}

/* 响应式 */
@media (max-width: 992px) {
  .echarts-map {
    height: 500px;
  }

  .map-stats {
    position: relative;
    top: 0;
    right: 0;
    flex-direction: row;
    justify-content: center;
    margin-top: 20px;
  }

  .project-list-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .echarts-map {
    height: 400px;
  }

  .project-list-grid {
    grid-template-columns: 1fr;
  }

  .map-stats {
    gap: 10px;
  }

  .stat-card {
    padding: 15px 20px;
  }

  .stat-card strong {
    font-size: 24px;
  }
}