/* =============================================
   能易科技官网 — 样式表
   配色: 深蓝底 #0a1628 / 科技蓝 #2563eb / 能源绿 #10b981
   ============================================= */

/* ---------- CSS Variables ---------- */
:root {
  --bg-dark: #0a1628;
  --bg-darker: #060f1d;
  --bg-card: rgba(15, 30, 55, 0.7);
  --bg-card-hover: rgba(20, 40, 70, 0.85);
  --blue: #2563eb;
  --blue-light: #3b82f6;
  --blue-glow: rgba(37, 99, 235, 0.4);
  --green: #10b981;
  --green-light: #34d399;
  --green-glow: rgba(16, 185, 129, 0.4);
  --cyan: #06b6d4;
  --orange: #f59e0b;
  --text-primary: #f0f4f8;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: rgba(148, 163, 184, 0.1);
  --border-hover: rgba(37, 99, 235, 0.4);
  --radius: 16px;
  --radius-sm: 8px;
  --radius-xs: 4px;
  --shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--green-light); }

img { max-width: 100%; display: block; }
ul { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 100px 0;
  position: relative;
}

/* ---------- Section Header ---------- */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--green);
  background: rgba(16, 185, 129, 0.1);
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 16px;
}
.section-header h2 {
  font-size: 2.5rem;
  font-weight: 900;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--blue-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-header p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: var(--font);
}
.btn-primary {
  background: linear-gradient(135deg, var(--blue) 0%, var(--green) 100%);
  color: #fff;
  box-shadow: 0 4px 20px var(--blue-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--blue-glow);
  color: #fff;
}
.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
}
.btn-outline:hover {
  background: rgba(37, 99, 235, 0.1);
  color: var(--text-primary);
}
.btn-full { width: 100%; justify-content: center; }

/* ========== NAVIGATION ========== */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}
#navbar.scrolled {
  background: rgba(10, 22, 40, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.25rem;
}
.nav-logo:hover { color: var(--text-primary); }
.nav-logo-img {
  height: 50px;
  width: auto;
}
.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--blue), var(--green));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: #fff;
}
.nav-links {
  display: flex;
  gap: 32px;
}
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--blue);
  transition: var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
.nav-cta {
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--blue), var(--green));
  color: #fff !important;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
}
.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px var(--blue-glow);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========== HERO ========== */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}
#particles-js {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  padding: 0 24px;
}
.hero-title {
  margin-bottom: 24px;
}
.hero-title-line {
  display: block;
  font-size: 4rem;
  font-weight: 900;
  letter-spacing: 8px;
  line-height: 1.3;
}
.hero-title-line.accent {
  background: linear-gradient(135deg, var(--blue-light), var(--green-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.8;
}
.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 48px;
}
.hero-badge {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-badge span {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.hero-badge i {
  color: var(--green);
}

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}
.scroll-mouse {
  width: 26px;
  height: 40px;
  border: 2px solid var(--text-muted);
  border-radius: 13px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}
.scroll-dot {
  width: 4px;
  height: 8px;
  background: var(--blue-light);
  border-radius: 2px;
  animation: scrollDot 2s ease-in-out infinite;
}
@keyframes scrollDot {
  0%, 100% { opacity: 1; transform: translateY(0); }
  50% { opacity: 0.3; transform: translateY(10px); }
}

/* ========== STATS ========== */
#stats {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.stat-item {
  text-align: center;
  padding: 32px 16px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.stat-item:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}
.stat-icon {
  font-size: 1.5rem;
  color: var(--blue-light);
  margin-bottom: 12px;
}
.stat-number {
  font-size: 2.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--blue-light), var(--green-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  white-space: nowrap;
}
.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* ========== CAPABILITIES ========== */
#capabilities {
  background: var(--bg-darker);
}
.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.capability-card {
  position: relative;
  padding: 40px 32px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: var(--transition);
  overflow: hidden;
}
.capability-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}
.card-glow {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, var(--blue-glow) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.5s;
  pointer-events: none;
}
.capability-card:hover .card-glow {
  opacity: 0.15;
}
.card-icon {
  width: 60px;
  height: 60px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(16, 185, 129, 0.15));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--blue-light);
  margin-bottom: 24px;
}
.capability-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.capability-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 20px;
  line-height: 1.7;
}
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.card-tags span {
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: 20px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--blue-light);
  border: 1px solid rgba(37, 99, 235, 0.2);
}

/* ========== PRODUCTS ========== */
#products {
  background: var(--bg-dark);
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}
.product-card {
  position: relative;
  padding: 36px 24px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: var(--transition);
  text-align: center;
}
.product-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
}
.product-icon-wrap {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--blue), #1d4ed8);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #fff;
}
.product-icon-wrap.green { background: linear-gradient(135deg, var(--green), #059669); }
.product-icon-wrap.cyan { background: linear-gradient(135deg, var(--cyan), #0891b2); }
.product-icon-wrap.orange { background: linear-gradient(135deg, var(--orange), #d97706); }
.product-icon-wrap.purple { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.product-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.product-tagline {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 20px;
}
.product-features {
  text-align: left;
}
.product-features li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 6px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.product-features i {
  color: var(--green);
  font-size: 0.7rem;
}
.product-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 0.7rem;
  padding: 4px 10px;
  background: linear-gradient(135deg, var(--blue), var(--green));
  color: #fff;
  border-radius: 20px;
  font-weight: 600;
}
.product-badge.local {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
}
.products-more {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ========== SOLUTIONS ========== */
#solutions {
  background: var(--bg-darker);
}
.solutions-tabs {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
}
.tab-nav {
  display: flex;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
.tab-btn {
  flex: 1;
  min-width: 140px;
  padding: 16px 20px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font);
  white-space: nowrap;
  position: relative;
}
.tab-btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--blue);
  transform: scaleX(0);
  transition: var(--transition);
}
.tab-btn:hover { color: var(--text-secondary); background: rgba(37, 99, 235, 0.05); }
.tab-btn.active {
  color: var(--blue-light);
  background: rgba(37, 99, 235, 0.08);
}
.tab-btn.active::after { transform: scaleX(1); }
.tab-panels { padding: 40px; }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn 0.4s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.solution-content {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 32px;
}
.solution-pain, .solution-approach, .solution-value {
  padding: 24px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
}
.solution-pain h4, .solution-approach h4, .solution-value h4 {
  font-size: 0.9rem;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.solution-pain h4 { color: #f59e0b; }
.solution-approach h4 { color: var(--blue-light); }
.solution-value h4 { color: var(--green); }
.solution-pain p, .solution-approach p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}
.solution-approach ul li {
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
}
.solution-approach ul li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--blue-light);
  font-weight: bold;
}
.value-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.value-tags span {
  font-size: 0.8rem;
  padding: 6px 14px;
  background: rgba(16, 185, 129, 0.1);
  color: var(--green-light);
  border-radius: 20px;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

/* ========== TECHNOLOGY ========== */
#technology {
  background: var(--bg-dark);
}
.tech-pipeline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-bottom: 64px;
}
.tech-layer {
  text-align: center;
  padding: 32px 40px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  flex: 1;
  max-width: 260px;
  transition: var(--transition);
}
.tech-layer:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}
.tech-layer-icon {
  font-size: 2rem;
  color: var(--blue-light);
  margin-bottom: 12px;
}
.tech-layer h4 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}
.tech-layer p {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.tech-arrow {
  color: var(--blue-glow);
  font-size: 1.5rem;
}
.tech-highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.tech-highlight-card {
  padding: 32px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.tech-highlight-card:hover {
  border-color: var(--border-hover);
}
.tech-num {
  font-size: 2.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--blue), var(--green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 16px;
}
.tech-highlight-card h4 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}
.tech-highlight-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}
/* Awards */
.tech-awards {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}
.award-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.15);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.award-item i {
  color: #f59e0b;
}

/* ========== ABOUT ========== */
#about {
  background: var(--bg-darker);
}
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
  align-items: center;
}
.about-text .section-tag { margin-bottom: 12px; }
.about-text h2 {
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--blue-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.about-intro {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 36px;
  line-height: 1.8;
}
.about-intro strong { color: var(--text-primary); }
.about-highlights { display: flex; flex-direction: column; gap: 20px; }
.about-highlight-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.about-highlight-item > i {
  font-size: 1.2rem;
  color: var(--green);
  margin-top: 4px;
  width: 24px;
  text-align: center;
}
.about-highlight-item h5 {
  font-size: 1rem;
  margin-bottom: 4px;
}
.about-highlight-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.about-visual-card {
  position: relative;
  padding: 40px 32px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
}
.visual-bg-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 20%, var(--blue-glow) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, var(--green-glow) 0%, transparent 50%);
  opacity: 0.15;
}
.visual-content {
  position: relative;
  z-index: 1;
}
.vision-item {
  margin-bottom: 32px;
}
.vision-item:last-child { margin-bottom: 0; }
.vision-item h5 {
  font-size: 1rem;
  color: var(--green-light);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.vision-item p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ========== COVERAGE ========== */
#coverage {
  background: var(--bg-darker);
  padding-bottom: 10px;
}
.coverage-content {
  text-align: center;
}
.map-container {
  position: relative;
  max-width: 650px;
  margin: 0 auto 32px;
  min-height: 400px;
}
.map-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--text-muted);
  font-size: 0.9rem;
}
.china-map-svg {
  width: 100%;
  height: auto;
}
.map-province path {
  fill: rgba(37, 99, 235, 0.06);
  stroke: rgba(37, 99, 235, 0.2);
  stroke-width: 0.5;
  transition: all 0.3s ease;
  cursor: pointer;
}
.map-province:hover path {
  fill: rgba(37, 99, 235, 0.18);
  stroke: rgba(37, 99, 235, 0.5);
  stroke-width: 0.8;
}
.map-province.active path {
  fill: rgba(16, 185, 129, 0.22);
  stroke: var(--green-light);
  stroke-width: 1.2;
  filter: drop-shadow(0 0 8px rgba(16, 185, 129, 0.35));
}
.map-province.active:hover path {
  fill: rgba(16, 185, 129, 0.38);
}
.map-province.expanding path {
  fill: rgba(37, 99, 235, 0.13);
  stroke: var(--blue-light);
  stroke-width: 0.8;
  stroke-dasharray: 4 2;
}
.map-province.expanding:hover path {
  fill: rgba(37, 99, 235, 0.28);
}
.map-label {
  fill: var(--text-primary);
  font-size: 11px;
  font-weight: 700;
  text-anchor: middle;
  dominant-baseline: middle;
  pointer-events: none;
  font-family: var(--font);
  text-shadow: 0 1px 3px rgba(0,0,0,0.6);
}
.map-tooltip {
  position: absolute;
  background: rgba(10, 22, 40, 0.92);
  border: 1px solid var(--border-hover);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 0.8rem;
  color: var(--text-primary);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
  z-index: 10;
  backdrop-filter: blur(10px);
  white-space: nowrap;
}
/* 地图加载失败时的后备方案 */
.map-fallback {
  padding: 40px;
}
.map-fallback-content {
  text-align: center;
}
.map-fallback-content > i {
  font-size: 3rem;
  color: var(--blue-glow);
  margin-bottom: 16px;
}
.map-fallback-content h4 {
  margin-bottom: 24px;
}
.map-fallback-items {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.map-fb-item {
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 0.85rem;
  border: 1px solid var(--border);
}
.map-fb-item.active { color: var(--green-light); border-color: rgba(16,185,129,0.3); background: rgba(16,185,129,0.08); }
.map-fb-item.active span { color: var(--green); }
.map-fb-item.expanding { color: var(--blue-light); border-color: rgba(37,99,235,0.3); background: rgba(37,99,235,0.08); }
.map-fb-item.expanding span { color: var(--blue); }
/* 地图+路线图左右布局 */
.coverage-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  align-items: start;
}
.coverage-left { min-width: 0; }
.coverage-legend {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 16px;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid;
}
.legend-dot.active { background: rgba(16, 185, 129, 0.4); border-color: var(--green-light); }
.legend-dot.expanding { background: rgba(37, 99, 235, 0.2); border-color: var(--blue-light); }
.legend-dot.planned { background: rgba(100, 116, 139, 0.2); border-color: var(--text-muted); }
.coverage-note {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.8;
  text-align: center;
  margin-top: 20px;
}

/* section子标题 */
.section-subheader {
  text-align: center;
  margin-top: 64px;
  margin-bottom: 32px;
}
.section-subheader h3 {
  font-size: 1.5rem;
  color: var(--text-primary);
}
.section-subheader h3 i {
  color: var(--blue);
  margin-right: 8px;
}
.section-subheader p {
  color: var(--text-muted);
  margin-top: 8px;
}

/* ========== 右侧竖向时间线 ========== */
.coverage-right {
  padding-top: 8px;
}
.timeline-side-title {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 24px;
}
.timeline-side-title i {
  color: var(--blue);
  margin-right: 6px;
}
.timeline-v {
  position: relative;
  padding-left: 28px;
}
.timeline-v::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--blue), rgba(255,255,255,0.1));
}
.timeline-v-item {
  position: relative;
  margin-bottom: 24px;
}
.timeline-v-item:last-child { margin-bottom: 0; }
.timeline-v-dot {
  position: absolute;
  left: -24px;
  top: 2px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  z-index: 1;
}
.timeline-v-item.current .timeline-v-dot {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 0 12px rgba(37,99,235,0.5);
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 10px rgba(37,99,235,0.4); }
  50% { box-shadow: 0 0 20px rgba(37,99,235,0.7); }
}
.timeline-v-item.future .timeline-v-dot {
  background: rgba(255,255,255,0.08);
  color: var(--text-muted);
  border: 1px solid rgba(255,255,255,0.15);
}
.timeline-v-content {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
  padding: 14px 16px;
  transition: border-color 0.3s;
}
.timeline-v-item.current .timeline-v-content {
  border-color: rgba(37,99,235,0.3);
  background: rgba(37,99,235,0.05);
}
.timeline-v-content:hover {
  border-color: rgba(255,255,255,0.15);
}
.timeline-v-date {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}
.timeline-v-item.current .timeline-v-date { color: var(--blue); }
.timeline-v-item.future .timeline-v-date { color: var(--text-muted); }
.timeline-v-content h4 {
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.timeline-v-content p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ========== PARTNERS ========== */
#partners {
  padding: 60px 0;
  background: var(--bg-darker);
}
#partners .section-header { margin-bottom: 40px; }
.partners-scroll {
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}
.partners-track {
  display: flex;
  gap: 48px;
  animation: scrollPartners 30s linear infinite;
  width: max-content;
}
@keyframes scrollPartners {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.partner-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  min-width: 100px;
  color: var(--text-muted);
  font-size: 0.8rem;
  transition: var(--transition);
}
.partner-logo:hover { color: var(--text-secondary); }
.partner-logo i {
  font-size: 2rem;
  opacity: 0.5;
}
.partner-logo:hover i { opacity: 0.8; }

/* ========== NEWS ========== */
#news {
  background: var(--bg-dark);
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}
.news-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
}
.news-img {
  position: relative;
  height: 180px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(16, 185, 129, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
}
.news-img-placeholder {
  font-size: 3rem;
  color: rgba(255,255,255,0.85);
}
.news-img--product {
  background: linear-gradient(135deg, #1e40af 0%, #7c3aed 50%, #2563eb 100%);
}
.news-img--industry {
  background: linear-gradient(135deg, #065f46 0%, #0d9488 50%, #10b981 100%);
}
.news-img--tech {
  background: linear-gradient(135deg, #7c2d12 0%, #ea580c 50%, #f59e0b 100%);
}
.news-category {
  position: absolute;
  top: 12px;
  left: 12px;
  font-size: 0.7rem;
  padding: 4px 10px;
  background: rgba(37, 99, 235, 0.8);
  color: #fff;
  border-radius: 20px;
}
.news-body {
  padding: 20px;
}
.news-body time {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.news-body h4 {
  font-size: 1rem;
  margin: 8px 0;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-body p {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
a.news-card { color: inherit; display: block; }
a.news-card:hover { color: inherit; }
a.news-card:hover h4 { color: var(--blue-light); }

/* ========== Article Page ========== */
.article-page {
  padding-top: 100px;
  padding-bottom: 80px;
  min-height: 80vh;
}
.article-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 32px;
  transition: var(--transition);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
}
.article-back:hover { color: var(--blue-light); }
.article-header {
  max-width: 720px;
  margin: 0 auto 40px;
}
.article-category {
  display: inline-block;
  font-size: 0.75rem;
  padding: 4px 14px;
  background: rgba(37, 99, 235, 0.15);
  color: var(--blue-light);
  border-radius: 20px;
  margin-bottom: 16px;
}
.article-header h1 {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.5;
  margin-bottom: 16px;
}
.article-meta {
  display: flex;
  gap: 24px;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.article-meta i { margin-right: 6px; color: var(--blue-light); }
.article-body {
  max-width: 720px;
  margin: 0 auto;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 2;
}
.article-body p { margin-bottom: 20px; }
.article-body strong { color: var(--text-primary); }
.article-body h3 {
  color: var(--text-primary);
  font-size: 1.2rem;
  margin: 36px 0 16px;
}
.article-body ul {
  margin: 12px 0 20px 20px;
  list-style: disc;
}
.article-body ul li {
  margin-bottom: 8px;
  line-height: 1.8;
}
.article-body blockquote {
  margin: 28px 0;
  padding: 24px 28px;
  border-left: 3px solid var(--blue);
  background: rgba(37, 99, 235, 0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
}
.article-body blockquote p { margin-bottom: 8px; }
.article-body blockquote cite {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: normal;
  margin-top: 8px;
}
.article-footer {
  max-width: 720px;
  margin: 48px auto 0;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
@media (max-width: 768px) {
  .article-header h1 { font-size: 1.4rem; }
  .article-footer { flex-direction: column; }
}

/* ========== ARTICLE HERO BANNER ========== */
.article-hero {
  max-width: 720px;
  margin: 0 auto 36px;
  height: 280px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.article-hero .hero-icon {
  font-size: 4rem;
  color: rgba(255,255,255,0.85);
  z-index: 1;
}
.article-hero .hero-overlay-text {
  position: absolute;
  bottom: 20px;
  left: 24px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  z-index: 1;
}
.article-hero--product {
  background: linear-gradient(135deg, #1e40af 0%, #7c3aed 50%, #2563eb 100%);
}
.article-hero--industry {
  background: linear-gradient(135deg, #065f46 0%, #0d9488 50%, #10b981 100%);
}
.article-hero--tech {
  background: linear-gradient(135deg, #7c2d12 0%, #ea580c 50%, #f59e0b 100%);
}
@media (max-width: 768px) {
  .article-hero { height: 180px; }
  .article-hero .hero-icon { font-size: 2.5rem; }
}

/* ========== SERVICES ========== */
#services {
  background: var(--bg-dark);
}
.service-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.service-card {
  position: relative;
  padding: 32px 24px;
  text-align: center;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
}
.service-card.highlight {
  border-color: var(--green);
  background: rgba(16, 185, 129, 0.05);
}
.service-icon {
  font-size: 1.5rem;
  color: var(--blue-light);
  margin-bottom: 16px;
}
.service-card h4 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}
.service-card > p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.service-for {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: block;
}
.service-badge {
  position: absolute;
  top: -10px;
  right: 16px;
  font-size: 0.7rem;
  padding: 4px 12px;
  background: var(--green);
  color: #fff;
  border-radius: 20px;
  font-weight: 600;
}
.pricing-highlight {
  background: var(--bg-card);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius);
  padding: 32px;
}
.pricing-inner {
  display: flex;
  align-items: center;
  gap: 24px;
}
.pricing-inner > i {
  font-size: 2.5rem;
  color: #f59e0b;
}
.pricing-inner h4 {
  font-size: 1.1rem;
  margin-bottom: 6px;
  color: #fbbf24;
}
.pricing-inner p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ========== CTA / CONTACT ========== */
#contact {
  background: linear-gradient(180deg, var(--bg-dark), var(--bg-darker));
  padding: 100px 0 60px;
}
.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.cta-text h2 {
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text-primary), var(--green-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.cta-text > p {
  color: var(--text-secondary);
  margin-bottom: 36px;
  line-height: 1.8;
}
.cta-offers {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 36px;
}
.cta-offer {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.cta-offer > i {
  font-size: 1.2rem;
  color: var(--green);
  margin-top: 4px;
}
.cta-offer h5 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}
.cta-offer p {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.cta-contact-info {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.cta-contact-info i {
  color: var(--blue-light);
  margin-right: 6px;
}

/* Contact Form */
.cta-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
}
.cta-form h3 {
  font-size: 1.3rem;
  margin-bottom: 24px;
  text-align: center;
}
.form-group {
  margin-bottom: 16px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: var(--font);
  transition: var(--transition);
  outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}
.form-group select { cursor: pointer; }
.form-group select option { background: var(--bg-dark); color: var(--text-primary); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}
.form-note {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 12px;
}

/* ========== PIONEER ========== */
#pioneer {
  padding: 60px 0;
  background: var(--bg-dark);
}
.pioneer-banner {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(16, 185, 129, 0.15));
  border: 1px solid var(--border-hover);
  border-radius: var(--radius);
  padding: 48px;
  text-align: center;
}
.pioneer-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: #fbbf24;
  background: rgba(245, 158, 11, 0.1);
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 16px;
}
.pioneer-content h3 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}
.pioneer-content p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ========== FOOTER ========== */
#footer {
  background: var(--bg-darker);
  border-top: 1px solid var(--border);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.footer-logo-img {
  height: 36px;
  width: auto;
}
.footer-brand > p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 4px;
}
.footer-company {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.footer-address {
  margin-top: 28px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.footer-address p {
  margin-bottom: 4px;
}
.footer-address i {
  width: 16px;
  margin-right: 4px;
  text-align: center;
}
.footer-map {
  display: inline-block;
  margin-top: 12px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.footer-map:hover {
  border-color: var(--border-hover);
}
.footer-map-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg-card);
  font-size: 0.8rem;
  color: var(--text-secondary);
}
.footer-map-inner .fa-map-marker-alt {
  color: var(--blue-light);
}
.footer-links h5 {
  font-weight: 600;
  margin-bottom: 16px;
  font-size: 0.95rem;
}
.footer-links a {
  display: block;
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 4px 0;
}
.footer-links a:hover { color: var(--text-secondary); }
.footer-contact h5 {
  font-weight: 600;
  margin-bottom: 16px;
  font-size: 0.95rem;
}
.footer-contact p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.footer-contact i {
  width: 18px;
  color: var(--blue-light);
}
.footer-qr {
  margin-top: 16px;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
}
.footer-qr img {
  width: 156px;
  height: 156px;
  border-radius: 8px;
  background: #fff;
  padding: 6px;
}
.footer-qr span {
  margin-top: 6px;
  font-size: 0.75rem;
  color: var(--text-muted);
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.footer-bottom p { margin-bottom: 4px; }

/* ========== SCROLL 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) {
  .capabilities-grid,
  .products-grid,
  .service-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .cta-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .solution-content {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .tech-highlights {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  html { font-size: 15px; }

  section { padding: 72px 0; }

  .section-header h2 { font-size: 2rem; }

  .hero-title-line { font-size: 2.5rem; letter-spacing: 4px; }
  .hero-subtitle { font-size: 1rem; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .hero-badge { flex-direction: column; align-items: center; gap: 12px; }

  /* Nav mobile */
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(20px);
    padding: 20px 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
  }

  .stats-grid,
  .capabilities-grid,
  .products-grid,
  .news-grid,
  .service-cards {
    grid-template-columns: 1fr;
  }

  .tech-pipeline {
    flex-direction: column;
  }
  .tech-arrow { transform: rotate(90deg); }
  .tech-layer { max-width: 100%; }

  .tab-nav { overflow-x: auto; }
  .tab-btn { min-width: auto; font-size: 0.8rem; padding: 12px 14px; }
  .tab-panels { padding: 24px 20px; }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .coverage-legend { flex-direction: column; align-items: center; }

  .coverage-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .coverage-right {
    padding-top: 0;
  }
  .timeline-side-title { font-size: 1rem; }
  .timeline-v-content p { font-size: 0.78rem; }

  .pricing-inner { flex-direction: column; text-align: center; }
  .cta-contact-info { flex-direction: column; gap: 12px; }
  .pioneer-banner { padding: 32px 20px; }
}

@media (max-width: 480px) {
  .hero-title-line { font-size: 2rem; letter-spacing: 2px; }
  .container { padding: 0 16px; }
  .cta-form { padding: 28px 20px; }
}