/* ===== 基础变量与重置 ===== */
:root {
  --bg: #0a1628;
  --bg-2: #0e1b30;
  --bg-card: #112240;
  --border: rgba(120, 170, 255, 0.12);
  --border-strong: rgba(120, 170, 255, 0.22);
  --text: #e6f0ff;
  --text-dim: #8ea3c2;
  --text-muted: #5a7090;
  --primary: #00e5ff;
  --primary-2: #7c5cff;
  --accent: #ff4d8f;
  --success: #2ecc71;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow-lg: 0 20px 60px -20px rgba(0, 229, 255, 0.25);
  --shadow-md: 0 8px 24px -8px rgba(0, 0, 0, 0.45);
  --max-w: 1200px;
}

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

html { scroll-behavior: smooth; }

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

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img, svg { max-width: 100%; display: block; }

/* ===== 通用按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.25s ease;
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-sm { padding: 10px 22px; font-size: 14px; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  color: #0a1628;
  box-shadow: 0 8px 24px -6px rgba(0, 229, 255, 0.55);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px -6px rgba(0, 229, 255, 0.7); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-ghost:hover { background: rgba(124, 92, 255, 0.08); border-color: var(--primary-2); }

/* ===== 导航栏 ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 22, 40, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.3px;
}
.logo-mark {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  position: relative;
  box-shadow: 0 4px 12px -2px rgba(0, 229, 255, 0.5);
}
.logo-mark::after {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: 2px;
  background: var(--bg);
}
.logo-text em {
  font-style: normal;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-links { display: flex; gap: 32px; }
.nav-links a {
  font-size: 14px;
  color: var(--text-dim);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--primary); }

/* ===== Hero 区 ===== */
.hero {
  position: relative;
  padding: 80px 32px 120px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.grid-layer {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(120, 170, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 170, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 75%);
}
.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.55;
}
.glow-1 {
  width: 520px; height: 520px;
  background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
  top: -120px; left: -120px;
}
.glow-2 {
  width: 620px; height: 620px;
  background: radial-gradient(circle, var(--primary-2) 0%, transparent 70%);
  top: 20%; right: -200px;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: 999px;
  font-size: 13px;
  color: var(--primary);
  margin-bottom: 24px;
}
.badge .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 10px var(--primary);
}
.hero-title {
  font-size: clamp(34px, 4.2vw, 56px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}
.hero-title .highlight {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: 17px;
  color: var(--text-dim);
  max-width: 520px;
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.stat strong {
  display: block;
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
  margin-bottom: 4px;
}
.stat span {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Hero 右侧卡片 ===== */
.hero-card {
  background: linear-gradient(145deg, rgba(17, 34, 64, 0.9), rgba(14, 27, 48, 0.7));
  border: 1px solid var(--border-strong);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: perspective(1200px) rotateY(-6deg) rotateX(3deg);
  transition: transform 0.6s ease;
}
.hero-card:hover { transform: perspective(1200px) rotateY(0) rotateX(0); }
.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
}
.dots { display: flex; gap: 6px; }
.dots span {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: #2a3a55;
}
.dots span:first-child { background: #ff5f56; }
.dots span:nth-child(2) { background: #ffbd2e; }
.dots span:nth-child(3) { background: #27c93f; }
.card-title { font-size: 13px; color: var(--text-dim); }

.card-map { padding: 20px; position: relative; }
.route-svg {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  background: radial-gradient(ellipse at 30% 70%, rgba(0, 229, 255, 0.08), transparent 60%);
}
.route-path {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: drawRoute 2.4s ease-out forwards;
  filter: drop-shadow(0 0 6px rgba(0, 229, 255, 0.5));
}
.pulse-node { animation: pulse 2s ease-in-out infinite; }
.truck-icon { animation: moveTruck 6s linear infinite; }

@keyframes drawRoute {
  to { stroke-dashoffset: 0; }
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform-origin: center; }
  50% { opacity: 0.5; }
}
@keyframes moveTruck {
  0% { transform: translate(50px, 240px); }
  28% { transform: translate(160px, 140px); }
  62% { transform: translate(260px, 90px); }
  100% { transform: translate(350px, 60px); }
}

.route-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 16px;
  padding: 14px;
  background: rgba(0, 229, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.route-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: center;
}
.route-item .label { font-size: 11px; color: var(--text-muted); }
.route-item .value { font-size: 15px; font-weight: 600; color: var(--text); }
.highlight-score { color: var(--primary) !important; }

.card-footer {
  display: flex;
  gap: 10px;
  padding: 14px 18px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.status-tag {
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 6px;
  background: rgba(124, 92, 255, 0.08);
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.status-ok { color: var(--success); border-color: rgba(46, 204, 113, 0.3); background: rgba(46, 204, 113, 0.08); }

/* ===== 合作伙伴 ===== */
.partners {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 20px 32px 60px;
  text-align: center;
}
.partner-title {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  margin-bottom: 24px;
}
.partner-list {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  opacity: 0.5;
}
.partner-list span {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

/* ===== 通用 Section ===== */
.section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 100px 32px;
  position: relative;
}
.section-dark {
  background: linear-gradient(180deg, transparent 0%, rgba(17, 34, 64, 0.5) 50%, transparent 100%);
  max-width: none;
  padding-left: 32px;
  padding-right: 32px;
}
.section-dark > * { max-width: var(--max-w); margin-left: auto; margin-right: auto; }

.section-head {
  text-align: center;
  margin-bottom: 56px;
}
.section-tag {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(124, 92, 255, 0.1);
  border: 1px solid rgba(124, 92, 255, 0.25);
  border-radius: 999px;
  font-size: 13px;
  color: var(--primary-2);
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}
.section-head h2 {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 700;
  letter-spacing: -0.3px;
  margin-bottom: 12px;
}
.section-head p {
  color: var(--text-dim);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto;
}

/* ===== 核心功能 ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  padding: 36px 28px;
  background: linear-gradient(145deg, var(--bg-card), var(--bg-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, transparent);
  transition: background 0.3s;
}
.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}
.feature-card:hover::before {
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
}
.feature-card--featured {
  background: linear-gradient(145deg, rgba(0, 229, 255, 0.08), rgba(124, 92, 255, 0.08));
  border-color: rgba(0, 229, 255, 0.25);
}
.feature-icon {
  width: 56px; height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  border-radius: 14px;
  background: rgba(0, 229, 255, 0.08);
  margin-bottom: 20px;
}
.icon-2 { background: rgba(124, 92, 255, 0.12); }
.icon-3 { background: rgba(255, 77, 143, 0.1); }
.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}
.feature-card > p {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 20px;
  line-height: 1.7;
}
.feature-list li {
  font-size: 13px;
  color: var(--text-dim);
  padding: 8px 0;
  border-top: 1px dashed var(--border);
  position: relative;
  padding-left: 18px;
}
.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

/* ===== 应用场景 ===== */
.scenes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.scene-card {
  padding: 32px 24px;
  background: rgba(17, 34, 64, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.3s ease;
}
.scene-card:hover {
  transform: translateY(-4px);
  background: rgba(17, 34, 64, 0.9);
  border-color: var(--border-strong);
}
.scene-num {
  font-size: 40px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 16px;
}
.scene-card h3 {
  font-size: 17px;
  margin-bottom: 10px;
}
.scene-card p {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ===== 技术优势 ===== */
.advantage-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.advantage-col {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.adv-item {
  display: flex;
  gap: 18px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.25s;
}
.adv-item:hover {
  border-color: var(--border-strong);
  transform: translateX(4px);
}
.adv-icon {
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.1), rgba(124, 92, 255, 0.1));
  flex-shrink: 0;
}
.adv-item h4 {
  font-size: 16px;
  margin-bottom: 6px;
}
.adv-item p {
  font-size: 14px;
  color: var(--text-dim);
}

/* ===== 下载区 ===== */
.download-section {
  padding: 100px 32px;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(0, 229, 255, 0.08), transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(124, 92, 255, 0.08), transparent 50%),
    var(--bg-2);
}
.download-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  text-align: center;
}
.download-inner h2 {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 700;
  margin-bottom: 12px;
}
.download-inner > p {
  color: var(--text-dim);
  font-size: 16px;
  margin-bottom: 48px;
}
.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 860px;
  margin: 0 auto;
}
.dl-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 22px;
  background: rgba(17, 34, 64, 0.8);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  transition: all 0.25s;
  text-align: left;
}
.dl-card:hover {
  transform: translateY(-3px);
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(124, 92, 255, 0.08));
  border-color: var(--primary);
  box-shadow: 0 8px 24px -8px rgba(0, 229, 255, 0.3);
}
.dl-icon {
  font-size: 26px;
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 10px;
}
.dl-info { flex: 1; display: flex; flex-direction: column; gap: 2px; }
.dl-label { font-size: 11px; color: var(--text-muted); letter-spacing: 1px; }
.dl-info strong { font-size: 14px; font-weight: 600; }
.dl-arrow {
  font-size: 18px;
  color: var(--primary);
  transition: transform 0.25s;
}
.dl-card:hover .dl-arrow { transform: translateX(4px); }

.dl-card-disabled {
  cursor: not-allowed;
  opacity: 0.65;
  background: rgba(17, 34, 64, 0.5);
  border-color: var(--border);
  filter: saturate(0.5);
  position: relative;
}
.dl-card-disabled:hover {
  transform: none;
  background: rgba(17, 34, 64, 0.5);
  border-color: var(--border);
  box-shadow: none;
}
.dl-card-disabled .dl-info strong { color: var(--text-dim); }

.dl-tag {
  font-size: 11px;
  padding: 5px 10px;
  border-radius: 6px;
  background: rgba(255, 77, 143, 0.12);
  color: #ff8fb0;
  border: 1px solid rgba(255, 77, 143, 0.25);
  white-space: nowrap;
  letter-spacing: 0.5px;
}

@media (max-width: 960px) {
  .download-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 720px) {
  .download-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== 页脚 ===== */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 48px 32px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
}
.logo-footer {
  justify-content: center;
}
.footer-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 420px;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 24px;
  margin-top: 8px;
}
.footer-links a {
  font-size: 13px;
  color: var(--text-dim);
  padding: 6px 10px;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}
.footer-links a:hover {
  color: var(--primary);
  background: rgba(0, 229, 255, 0.06);
}
.footer-bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 18px 32px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
}

/* ===== 滚动进入动画 ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .nav-links { display: none; }
  .hero { padding: 48px 24px 80px; }
  .hero-content { grid-template-columns: 1fr; gap: 48px; }
  .hero-card { transform: none; }
  .features-grid { grid-template-columns: 1fr; }
  .scenes-grid { grid-template-columns: repeat(2, 1fr); }
  .download-grid { grid-template-columns: repeat(2, 1fr); }
  .advantage-row { grid-template-columns: 1fr; gap: 20px; }
  .section { padding: 70px 24px; }
  .section-dark { padding-left: 24px; padding-right: 24px; }
  .partner-list { gap: 24px; }
  .hero-stats { gap: 24px; }
}
@media (max-width: 560px) {
  .scenes-grid { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
  .footer-links { gap: 4px 16px; }
  .route-info { grid-template-columns: repeat(3, 1fr); font-size: 11px; }
  .btn { padding: 12px 22px; font-size: 14px; }
}

/* ===== 商务合作二维码弹窗 ===== */
.qrcode-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.qrcode-modal.is-open {
  display: flex;
  animation: qrcodeFadeIn 0.22s ease;
}
.qrcode-overlay {
  position: absolute;
  inset: 0;
  background: rgba(6, 14, 28, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.qrcode-dialog {
  position: relative;
  width: 100%;
  max-width: 340px;
  background: linear-gradient(160deg, #0f1e38 0%, #0a1628 100%);
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  padding: 32px 28px 26px;
  text-align: center;
  box-shadow:
    0 20px 60px -20px rgba(0, 229, 255, 0.25),
    0 0 0 1px rgba(0, 229, 255, 0.08) inset;
  animation: qrcodePop 0.28s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.qrcode-close {
  position: absolute;
  top: 10px;
  right: 12px;
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}
.qrcode-close:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}
.qrcode-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 22px;
  color: var(--text);
}
.qrcode-image-wrap {
  background: #fff;
  padding: 14px;
  border-radius: 14px;
  display: inline-block;
  margin-bottom: 18px;
  box-shadow: 0 8px 24px -10px rgba(0, 0, 0, 0.6);
}
.qrcode-image {
  display: block;
  width: 220px;
  height: 220px;
  object-fit: contain;
}
.qrcode-tip {
  font-size: 13px;
  color: var(--text-muted);
}
@keyframes qrcodeFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes qrcodePop {
  from { opacity: 0; transform: translateY(10px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}