/* ========================================
   CSG 云中穿梭科技官网样式
   风格：深空蓝工业科技风
   ======================================== */

/* ---------- 基础变量 ---------- */
:root {
  /* 主色调 - 深空蓝系 */
  --primary-900: #0a1628;
  --primary-800: #0d1f38;
  --primary-700: #122a4a;
  --primary-600: #1a3a63;
  --primary-500: #2563eb;
  --primary-400: #3b82f6;
  --primary-300: #60a5fa;

  /* 强调色 - 科技蓝/青 */
  --accent: #00d4ff;
  --accent-glow: rgba(0, 212, 255, 0.4);

  /* 辅助色 */
  --success: #10b981;
  --warning: #f59e0b;
  --orange: #f97316;

  /* 中性色 */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  /* 字体 */
  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Space Grotesk', 'Noto Sans SC', sans-serif;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #0a1628 0%, #122a4a 50%, #1a3a63 100%);
  --gradient-accent: linear-gradient(135deg, #00d4ff 0%, #3b82f6 100%);
  --gradient-card: linear-gradient(180deg, rgba(18, 42, 74, 0.8) 0%, rgba(10, 22, 40, 0.95) 100%);

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-800);
  background: var(--gray-50);
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

ul {
  list-style: none;
}

/* ---------- 通用容器 ---------- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.section-header {
  margin-bottom: 60px;
}

.section-header.center {
  text-align: center;
}

.section-eyebrow {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--primary-500);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-eyebrow.light {
  color: var(--accent);
}

.section-title {
  font-size: 42px;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.section-title.light {
  color: #fff;
}

.section-desc {
  font-size: 17px;
  color: var(--gray-500);
  margin-top: 16px;
  max-width: 600px;
}

.section-header.center .section-desc {
  margin-left: auto;
  margin-right: auto;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-block {
  width: 100%;
}

.btn svg {
  width: 18px;
  height: 18px;
  transition: transform 0.3s ease;
}

.btn-primary:hover svg {
  transform: translateX(3px);
}

/* ---------- 导航栏 ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: all 0.3s ease;
}

.nav.scrolled {
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(20px);
  padding: 12px 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
}

.nav-logo-img {
  height: 40px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
  font-weight: 500;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.nav-links a:hover {
  color: #fff;
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  background: var(--gradient-accent);
  color: #fff !important;
  padding: 10px 22px;
  border-radius: var(--radius-md);
  font-weight: 600;
}

.nav-cta::after {
  display: none;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 212, 255, 0.4);
}

.nav-download {
  display: flex !important;
  align-items: center;
  gap: 6px;
  margin-left: 8px;
  padding: 9px 18px !important;
  background: rgba(0, 212, 255, 0.1) !important;
  border: 1px solid rgba(0, 212, 255, 0.3) !important;
  color: var(--accent) !important;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 14px !important;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.nav-download svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.nav-download::after {
  display: none !important;
}

.nav-download:hover {
  background: var(--accent) !important;
  color: #fff !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 212, 255, 0.35);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 120px 0 80px;
  background: #050d1a;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  overflow: hidden;
}

/* 深空渐变基底 */
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, #0d2547 0%, #081829 40%, #040c18 100%);
}

/* 星云光晕层 1 — 科技青右下 */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 75% 70%, rgba(0, 212, 255, 0.25) 0%, transparent 45%),
    radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.2) 0%, transparent 40%),
    radial-gradient(circle at 50% 100%, rgba(139, 92, 246, 0.12) 0%, transparent 50%);
  animation: nebulaDrift 20s ease-in-out infinite alternate;
}

@keyframes nebulaDrift {
  0% {
    transform: scale(1) translate(0, 0);
    opacity: 1;
  }
  100% {
    transform: scale(1.1) translate(-2%, -1%);
    opacity: 0.8;
  }
}

/* 流动光束 */
.hero-beams {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
  opacity: 0.35;
}

.hero-beam {
  position: absolute;
  width: 2px;
  height: 200px;
  background: linear-gradient(to bottom, transparent, var(--accent), transparent);
  filter: blur(1px);
  animation: beamFall linear infinite;
  opacity: 0;
}

.hero-beam:nth-child(1) { left: 10%; animation-duration: 6s; animation-delay: 0s; }
.hero-beam:nth-child(2) { left: 25%; animation-duration: 8s; animation-delay: 2s; height: 150px; }
.hero-beam:nth-child(3) { left: 45%; animation-duration: 5s; animation-delay: 1s; height: 250px; }
.hero-beam:nth-child(4) { left: 65%; animation-duration: 7s; animation-delay: 3s; }
.hero-beam:nth-child(5) { left: 80%; animation-duration: 9s; animation-delay: 0.5s; height: 180px; }
.hero-beam:nth-child(6) { left: 92%; animation-duration: 6.5s; animation-delay: 1.5s; height: 220px; }

@keyframes beamFall {
  0% {
    transform: translateY(-200px);
    opacity: 0;
  }
  10% {
    opacity: 0.8;
  }
  90% {
    opacity: 0.8;
  }
  100% {
    transform: translateY(100vh);
    opacity: 0;
  }
}

/* 大光晕球 */
.hero-glow-orbs {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: orbFloat 12s ease-in-out infinite alternate;
}

.hero-orb-1 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.5) 0%, transparent 70%);
  top: -100px;
  right: -100px;
}

.hero-orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.4) 0%, transparent 70%);
  bottom: -150px;
  left: -150px;
  animation-delay: -4s;
  animation-duration: 15s;
}

.hero-orb-3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.3) 0%, transparent 70%);
  top: 40%;
  left: 60%;
  animation-delay: -8s;
  animation-duration: 18s;
}

@keyframes orbFloat {
  0% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(30px, -20px) scale(1.1);
  }
  100% {
    transform: translate(-20px, 20px) scale(0.95);
  }
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}

.hero-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  color: #fff;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  background: rgba(0, 212, 255, 0.12);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 100px;
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 28px;
  backdrop-filter: blur(10px);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.2); }
}

.hero-title {
  font-size: 64px;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 24px;
}

.hero-title-line {
  display: block;
}

.hero-title-accent {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 40px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 0;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat {
  flex: 1;
  text-align: center;
  padding: 0 12px;
}

.hero-stat-divider {
  width: 1px;
  height: 50px;
  background: rgba(255, 255, 255, 0.1);
}

.hero-stat-num {
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  display: inline;
}

.hero-stat-unit {
  display: inline;
  font-size: 18px;
  font-weight: 600;
  color: var(--accent);
  margin-left: 2px;
}

.hero-stat-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 8px;
}

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

.hero-drone-wrap {
  position: relative;
  width: 100%;
  max-width: 500px;
}

.hero-drone {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.4));
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

.hero-drone-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
  height: 80%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.3) 0%, transparent 70%);
  filter: blur(40px);
  z-index: -1;
  animation: glow 4s ease-in-out infinite alternate;
}

@keyframes glow {
  from { opacity: 0.5; transform: translate(-50%, -50%) scale(0.9); }
  to { opacity: 0.8; transform: translate(-50%, -50%) scale(1.1); }
}

.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 12px;
  letter-spacing: 2px;
  z-index: 1;
}

.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.5), transparent);
  position: relative;
  overflow: hidden;
}

.hero-scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--accent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { top: -100%; }
  100% { top: 100%; }
}

/* ---------- 关于我们 ---------- */
.about {
  background: #fff;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 80px;
  align-items: start;
}

.about-lead {
  font-size: 20px;
  line-height: 1.7;
  color: var(--gray-800);
  margin-bottom: 20px;
  font-weight: 500;
}

.about-text p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray-600);
  margin-bottom: 16px;
}

.about-text strong {
  color: var(--primary-700);
  font-weight: 600;
}

.about-mission {
  display: flex;
  gap: 20px;
  align-items: center;
  padding: 24px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08) 0%, rgba(0, 212, 255, 0.08) 100%);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--primary-500);
  margin-top: 32px;
}

.mission-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.mission-icon svg {
  width: 28px;
  height: 28px;
}

.mission-label {
  font-size: 14px;
  color: var(--primary-500);
  font-weight: 600;
  margin-bottom: 4px;
}

.mission-text {
  font-size: 17px;
  color: var(--gray-800);
  font-weight: 600;
  line-height: 1.5;
}

.about-visual {
  position: relative;
}

.about-img-main {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.about-img-main img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.about-img-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px 24px;
  background: linear-gradient(to top, rgba(10, 22, 40, 0.95), transparent);
  color: #fff;
}

.about-img-caption span {
  display: block;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 4px;
}

.about-img-caption strong {
  font-size: 18px;
  font-weight: 700;
}

.about-img-sub {
  position: absolute;
  bottom: -40px;
  right: -30px;
  width: 220px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 4px solid #fff;
}

.about-img-sub img {
  width: 100%;
  height: 150px;
  object-fit: cover;
}

/* ---------- 母公司实力 ---------- */
.parent {
  background: linear-gradient(180deg, var(--gray-50) 0%, #fff 100%);
}

.parent-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.parent-stat {
  text-align: center;
  padding: 36px 20px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  transition: all 0.3s ease;
}

.parent-stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-300);
}

.parent-stat-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(0, 212, 255, 0.1) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-500);
}

.parent-stat-icon svg {
  width: 28px;
  height: 28px;
}

.parent-stat-num {
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1;
  margin-bottom: 8px;
}

.parent-stat-num span {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary-500);
}

.parent-stat-label {
  font-size: 14px;
  color: var(--gray-500);
}

.parent-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.parent-feature {
  padding: 32px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  border-top: 3px solid var(--primary-500);
  transition: all 0.3s ease;
}

.parent-feature:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.parent-feature-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.parent-feature p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray-600);
}

/* ---------- 核心优势 ---------- */
.advantages {
  background: var(--gradient-primary);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.advantages::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.advantages .section-title {
  color: #fff;
}

.advantages .section-desc {
  color: rgba(255, 255, 255, 0.6);
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
  z-index: 1;
}

.adv-card {
  padding: 48px 36px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(10px);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.adv-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.adv-card:hover {
  transform: translateY(-8px);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 212, 255, 0.3);
}

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

.adv-card-center {
  transform: translateY(-20px);
}

.adv-card-center:hover {
  transform: translateY(-28px);
}

.adv-number {
  font-family: var(--font-display);
  font-size: 64px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.08);
  line-height: 1;
  margin-bottom: 24px;
}

.adv-icon-wrap {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-lg);
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.3);
}

.adv-icon-wrap svg {
  width: 36px;
  height: 36px;
  color: #fff;
}

.adv-title {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 16px;
  color: #fff;
}

.adv-desc {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.7);
}

/* ---------- 产品中心 ---------- */
.products {
  background: #fff;
}

.products .section-title,
.solutions .section-title,
.about .section-title,
.parent .section-title,
.cases .section-title,
.roadmap .section-title {
  color: var(--gray-900);
}

.products .section-desc,
.solutions .section-desc,
.about .section-desc,
.parent .section-desc,
.cases .section-desc,
.roadmap .section-desc {
  color: var(--gray-500);
}

.product-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

.product-tab {
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-600);
  background: var(--gray-100);
  border: none;
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
}

.product-tab:hover {
  background: var(--gray-200);
  color: var(--gray-800);
}

.product-tab.active {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
}

.product-panel {
  display: none;
  animation: fadeInUp 0.5s ease;
}

.product-panel.active {
  display: block;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 产品 hero */
.product-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 40px;
  background: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-700) 100%);
  border-radius: var(--radius-xl);
  margin-bottom: 40px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.product-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.product-hero-img {
  position: relative;
  z-index: 1;
}

.product-hero-img img {
  width: 100%;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
}

.product-hero-info {
  position: relative;
  z-index: 1;
}

.product-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0, 212, 255, 0.2);
  color: var(--accent);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
  border: 1px solid rgba(0, 212, 255, 0.3);
}

.product-tag-green {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.3);
}

.product-name {
  font-size: 44px;
  font-weight: 700;
  margin-bottom: 16px;
  color: #fff;
  line-height: 1.2;
}

.product-desc {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 28px;
}

.product-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 28px;
}

.spec-item {
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.spec-val {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  display: inline;
}

.spec-val span {
  font-size: 16px;
  font-weight: 500;
  color: var(--accent);
  margin-left: 2px;
}

.spec-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 6px;
}

.product-detail {
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.detail-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  font-size: 14px;
}

.detail-row span {
  color: rgba(255, 255, 255, 0.6);
}

.detail-row strong {
  color: #fff;
  font-weight: 500;
}

/* 产品卡片列表 */
.product-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.product-card {
  background: #fff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: all 0.4s ease;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-300);
}

.product-card-wide {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.product-card-img {
  position: relative;
  overflow: hidden;
  background: var(--gray-100);
}

.product-card-wide .product-card-img {
  height: 100%;
}

.product-card-img img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-card-wide .product-card-img img {
  height: 100%;
}

.product-card:hover .product-card-img img {
  transform: scale(1.05);
}

.product-card-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 14px;
  background: rgba(10, 22, 40, 0.9);
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  border-radius: 100px;
  backdrop-filter: blur(10px);
}

.product-card-badge-blue {
  background: rgba(59, 130, 246, 0.9);
}

.product-card-badge-green {
  background: rgba(16, 185, 129, 0.9);
}

.product-card-body {
  padding: 28px;
}

.product-card-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.product-card-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray-600);
  margin-bottom: 20px;
}

.product-card-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.product-card-specs span {
  padding: 5px 12px;
  background: var(--primary-50);
  color: var(--primary-600);
  font-size: 12px;
  font-weight: 500;
  border-radius: 6px;
  background: rgba(37, 99, 235, 0.08);
}

.product-card-features {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 16px;
  border-top: 1px solid var(--gray-200);
}

.feature-chip {
  padding: 4px 10px;
  font-size: 12px;
  color: var(--gray-500);
  background: var(--gray-100);
  border-radius: 4px;
}

/* 行云系列 */
.nimbus-section {
  padding: 60px 40px;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  border-radius: var(--radius-xl);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.nimbus-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 80% 20%, rgba(249, 115, 22, 0.2) 0%, transparent 40%),
    radial-gradient(circle at 20% 80%, rgba(139, 92, 246, 0.15) 0%, transparent 40%);
}

.nimbus-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  position: relative;
  z-index: 1;
  margin-bottom: 50px;
}

.nimbus-img-wrap {
  display: flex;
  justify-content: center;
}

.nimbus-img-wrap img {
  max-width: 100%;
  height: 300px;
  object-fit: contain;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.4));
}

.nimbus-models {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  position: relative;
  z-index: 1;
}

.nimbus-model {
  padding: 32px 24px;
  text-align: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.nimbus-model:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(249, 115, 22, 0.4);
}

.nimbus-model-mid {
  transform: scale(1.05);
  border-color: rgba(249, 115, 22, 0.5);
}

.nimbus-model-mid:hover {
  transform: scale(1.05) translateY(-4px);
}

.nimbus-model-size {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.nimbus-model-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: #fff;
}

.nimbus-model p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
}

/* 足球无人机 */
.football-section {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
  padding: 40px;
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 50%, #fcd34d 100%);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.football-section::before {
  content: '';
  position: absolute;
  top: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.4) 0%, transparent 70%);
  border-radius: 50%;
}

.football-img-wrap {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
}

.football-img-wrap img {
  max-width: 100%;
  height: 350px;
  object-fit: contain;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.2));
}

.football-info {
  position: relative;
  z-index: 1;
}

.football-info .product-name {
  color: var(--gray-900);
}

.football-info .product-desc {
  color: var(--gray-700);
}

.football-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.football-spec {
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
}

.football-spec-label {
  font-size: 12px;
  color: var(--gray-600);
  margin-bottom: 4px;
}

.football-spec-val {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-900);
}

.football-scenes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.scene-tag {
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--gray-700);
  font-size: 13px;
  font-weight: 500;
  border-radius: 100px;
  border: 1px solid rgba(251, 191, 36, 0.4);
}

/* ---------- 应用场景 ---------- */
.solutions {
  background: var(--gray-50);
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.solution-card {
  background: #fff;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  transition: all 0.4s ease;
}

.solution-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-300);
}

.solution-img {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.solution-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.solution-card:hover .solution-img img {
  transform: scale(1.08);
}

.solution-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10, 22, 40, 0.7) 100%);
}

.solution-body {
  padding: 28px;
}

.solution-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(0, 212, 255, 0.1) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-500);
  margin-bottom: 16px;
  margin-top: -52px;
  position: relative;
  z-index: 2;
  border: 3px solid #fff;
  box-shadow: var(--shadow-md);
}

.solution-icon svg {
  width: 24px;
  height: 24px;
}

.solution-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 16px;
}

.solution-list {
  margin-bottom: 16px;
}

.solution-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--gray-600);
  margin-bottom: 8px;
  line-height: 1.5;
}

.solution-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.solution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 16px;
  border-top: 1px solid var(--gray-200);
}

.solution-tags span {
  padding: 4px 10px;
  font-size: 12px;
  color: var(--gray-500);
  background: var(--gray-100);
  border-radius: 4px;
}

/* ---------- 典型案例 ---------- */
.cases {
  background: #fff;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.case-card {
  background: #fff;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  transition: all 0.4s ease;
}

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-300);
}

.case-img {
  position: relative;
  height: 260px;
  overflow: hidden;
}

.case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.case-card:hover .case-img img {
  transform: scale(1.05);
}

.case-tag {
  position: absolute;
  top: 20px;
  left: 20px;
  padding: 8px 18px;
  background: rgba(37, 99, 235, 0.95);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border-radius: 100px;
  backdrop-filter: blur(10px);
  z-index: 2;
}

.case-tag-green {
  background: rgba(16, 185, 129, 0.95);
}

.case-tag-orange {
  background: rgba(249, 115, 22, 0.95);
}

.case-body {
  padding: 32px;
}

.case-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.case-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--gray-600);
  margin-bottom: 24px;
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 20px;
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
}

.case-metric {
  text-align: center;
}

.case-metric-val {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  color: var(--primary-600);
  line-height: 1;
  display: inline;
}

.case-metric-val span {
  font-size: 12px;
  font-weight: 500;
  color: var(--gray-500);
  margin-left: 1px;
}

.case-metric-label {
  font-size: 12px;
  color: var(--gray-500);
  margin-top: 6px;
}

.case-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.case-features span {
  padding: 5px 12px;
  font-size: 12px;
  color: var(--primary-600);
  background: rgba(37, 99, 235, 0.08);
  border-radius: 6px;
  font-weight: 500;
}

/* ---------- 发展规划 ---------- */
.roadmap {
  background: linear-gradient(180deg, var(--gray-50) 0%, #fff 100%);
}

.roadmap-timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 0;
}

.roadmap-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  background: linear-gradient(to bottom, var(--primary-400), var(--accent), var(--success), var(--warning));
  border-radius: 3px;
}

.roadmap-item {
  position: relative;
  display: flex;
  align-items: center;
  margin-bottom: 60px;
}

.roadmap-item:last-child {
  margin-bottom: 0;
}

.roadmap-item:nth-child(odd) .roadmap-content {
  margin-right: auto;
  margin-left: 0;
  text-align: right;
}

.roadmap-item:nth-child(even) .roadmap-content {
  margin-left: auto;
  margin-right: 0;
}

.roadmap-node {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary-500);
  border: 4px solid #fff;
  box-shadow: 0 0 0 3px var(--primary-300);
  z-index: 2;
}

.roadmap-node-last {
  background: var(--warning);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.3);
}

.roadmap-content {
  width: calc(50% - 32px);
  padding: 28px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.roadmap-content:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-300);
}

.roadmap-stage {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-500);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.roadmap-content h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 10px;
}

.roadmap-content p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray-600);
}

/* ---------- 联系我们 ---------- */
.contact {
  position: relative;
  color: #fff;
  padding: 120px 0;
  overflow: hidden;
}

.contact-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -2;
}

.contact-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.contact-bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(10, 22, 40, 0.95) 0%, rgba(26, 58, 99, 0.9) 100%);
}

.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.contact-desc {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 16px;
  margin-bottom: 40px;
  max-width: 400px;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(0, 212, 255, 0.15);
  border: 1px solid rgba(0, 212, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.contact-icon svg {
  width: 24px;
  height: 24px;
}

.contact-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 4px;
}

.contact-val {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
}

a.contact-val:hover {
  color: var(--accent);
}

.contact-form-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: 40px;
}

.contact-form-card h3 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}

.contact-form-card > p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 28px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  font-size: 15px;
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  font-family: inherit;
  transition: all 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ffffff' fill-opacity='0.6' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 18px center;
  padding-right: 40px;
  cursor: pointer;
}

.form-group select option {
  background: var(--primary-800);
  color: #fff;
}

/* ---------- 页脚 ---------- */
.footer {
  background: var(--primary-900);
  color: rgba(255, 255, 255, 0.7);
  padding: 80px 0 30px;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.5fr 3fr;
  gap: 60px;
  margin-bottom: 60px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
  max-width: 320px;
}

.footer-logo {
  height: 44px;
  width: auto;
  margin-bottom: 20px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 12px;
}

.footer-tagline {
  font-size: 13px;
  color: var(--accent);
  font-weight: 500;
}

.footer-download-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 24px;
  padding: 16px 20px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15) 0%, rgba(37, 99, 235, 0.1) 100%);
  border: 1px solid rgba(0, 212, 255, 0.35);
  border-radius: var(--radius-md);
  color: #fff;
  text-decoration: none;
  transition: all 0.3s ease;
}

.footer-download-btn:hover {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.25) 0%, rgba(37, 99, 235, 0.2) 100%);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 212, 255, 0.2);
}

.footer-download-btn svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  color: var(--accent);
}

.footer-download-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-download-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
}

.footer-download-sub {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.55);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

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

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

.footer-col a:hover {
  color: var(--accent);
  transform: translateX(4px);
}

.footer-col p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  padding: 6px 0;
  line-height: 1.6;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

/* ---------- 标准设备 ---------- */
.standard-header {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 48px 48px 40px;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #0f172a 100%);
  border-radius: var(--radius-xl);
  margin-bottom: 40px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.standard-header::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.12) 0%, transparent 70%);
  border-radius: 50%;
}

.standard-header-text {
  position: relative;
  z-index: 1;
}

.standard-header-text .product-name {
  font-size: 36px;
  margin-bottom: 12px;
}

.standard-header-text .product-desc {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 0;
  max-width: 560px;
}

.standard-stats {
  display: flex;
  justify-content: flex-end;
  gap: 32px;
  position: relative;
  z-index: 1;
}

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

.standard-stat-num {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 6px;
}

.standard-stat-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 1px;
}

.standard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.std-card {
  background: #fff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: all 0.4s ease;
  display: flex;
  flex-direction: column;
}

.std-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-300);
}

.std-card-img {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: var(--gray-100);
  flex-shrink: 0;
}

.std-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.std-card:hover .std-card-img img {
  transform: scale(1.05);
}

.std-card-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 14px;
  background: rgba(10, 22, 40, 0.9);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  border-radius: 100px;
  backdrop-filter: blur(10px);
  z-index: 2;
}

.std-card-badge-orange {
  background: rgba(249, 115, 22, 0.95);
}

.std-card-badge-purple {
  background: rgba(139, 92, 246, 0.95);
}

.std-card-badge-green {
  background: rgba(16, 185, 129, 0.95);
}

.std-card-badge-blue {
  background: rgba(59, 130, 246, 0.95);
}

.std-card-badge-yellow {
  background: rgba(245, 158, 11, 0.95);
  color: #1a1a1a;
}

.std-card-badge-red {
  background: rgba(239, 68, 68, 0.95);
}

.std-card-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.std-card-eyebrow {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--primary-500);
  text-transform: uppercase;
}

.std-card-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0;
}

.std-card-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray-600);
  margin: 0;
}

.std-section {
  padding-top: 4px;
}

.std-section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-500);
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--gray-200);
  display: flex;
  align-items: center;
  gap: 8px;
}

.std-section-title::before {
  content: '';
  width: 3px;
  height: 12px;
  background: var(--primary-500);
  border-radius: 2px;
}

.std-section-text {
  font-size: 14px;
  color: var(--gray-700);
  line-height: 1.6;
  padding-left: 11px;
}

.std-core-specs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding-left: 11px;
}

.std-core-spec {
  text-align: center;
  padding: 10px 6px;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-100);
}

.std-core-val {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-600);
  line-height: 1;
  display: inline;
}

.std-core-val span {
  font-size: 11px;
  font-weight: 500;
  color: var(--gray-500);
  margin-left: 1px;
}

.std-core-label {
  font-size: 11px;
  color: var(--gray-500);
  margin-top: 4px;
  line-height: 1.3;
}

.std-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 16px;
  padding-left: 11px;
}

.std-detail-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  padding: 4px 0;
  border-bottom: 1px solid var(--gray-100);
}

.std-detail-item span {
  color: var(--gray-500);
}

.std-detail-item strong {
  color: var(--gray-800);
  font-weight: 500;
  font-size: 13px;
  text-align: right;
}

.std-scene-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-left: 11px;
}

.std-scene-tags span {
  padding: 4px 10px;
  font-size: 12px;
  color: var(--primary-600);
  background: rgba(37, 99, 235, 0.08);
  border-radius: 4px;
  font-weight: 500;
}

.std-kit-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
  padding-left: 11px;
}

.std-kit-item {
  padding: 5px 12px;
  font-size: 12px;
  color: var(--gray-700);
  background: var(--gray-100);
  border-radius: 4px;
  border: 1px solid var(--gray-200);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .section-title {
    font-size: 36px;
  }

  .hero-title {
    font-size: 48px;
  }

  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .hero-drone-wrap {
    max-width: 350px;
    margin: 0 auto;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-img-sub {
    right: 20px;
    bottom: -30px;
  }

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

  .parent-features {
    grid-template-columns: 1fr;
  }

  .adv-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

  .adv-card-center {
    transform: none;
  }

  .product-hero {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .product-hero-img {
    max-width: 400px;
    margin: 0 auto;
  }

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

  .product-card-wide {
    grid-template-columns: 1fr;
  }

  .product-card-img img {
    height: 240px;
  }

  .nimbus-header {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .football-section {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .football-scenes {
    justify-content: center;
  }

  .standard-header {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px;
    text-align: center;
  }

  .standard-stats {
    justify-content: center;
  }

  .standard-grid {
    grid-template-columns: 1fr;
  }

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

  .case-grid {
    grid-template-columns: 1fr;
  }

  .contact-wrap {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

@media (max-width: 768px) {
  .section {
    padding: 70px 0;
  }

  .section-title {
    font-size: 28px;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    justify-content: center;
    background: var(--primary-900);
    gap: 24px;
    transition: right 0.3s ease;
    padding: 40px;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.3);
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    font-size: 18px;
  }

  .nav-download {
    margin-left: 0 !important;
    justify-content: center;
    width: 100%;
    padding: 12px 20px !important;
  }

  .nav-toggle {
    display: flex;
    z-index: 1001;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero {
    padding: 100px 0 60px;
    min-height: auto;
  }

  .hero-title {
    font-size: 36px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-stats {
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
  }

  .hero-stat-divider {
    display: none;
  }

  .hero-stat {
    flex: none;
    width: calc(50% - 10px);
    padding: 16px;
  }

  .hero-stat-num {
    font-size: 32px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
  }

  .parent-stats {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .parent-stat {
    padding: 24px 12px;
  }

  .parent-stat-num {
    font-size: 32px;
  }

  .parent-stat-label {
    font-size: 12px;
  }

  .product-tabs {
    flex-direction: column;
    align-items: stretch;
  }

  .product-tab {
    padding: 12px 20px;
    text-align: center;
  }

  .product-hero {
    padding: 24px;
  }

  .product-name {
    font-size: 32px;
  }

  .product-specs {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .spec-val {
    font-size: 24px;
  }

  .nimbus-section {
    padding: 30px 20px;
  }

  .nimbus-models {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .nimbus-model-mid {
    transform: none;
  }

  .nimbus-model-mid:hover {
    transform: translateY(-4px);
  }

  .football-section {
    padding: 30px 20px;
  }

  .standard-header {
    padding: 24px 20px;
  }

  .standard-header-text .product-name {
    font-size: 26px;
  }

  .standard-stats {
    gap: 20px;
  }

  .standard-stat-num {
    font-size: 28px;
  }

  .std-card-body {
    padding: 20px;
    gap: 16px;
  }

  .std-core-specs {
    grid-template-columns: repeat(2, 1fr);
  }

  .std-detail-grid {
    grid-template-columns: 1fr;
  }

  .football-specs {
    grid-template-columns: 1fr;
  }

  .solution-grid {
    grid-template-columns: 1fr;
  }

  .case-metrics {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    padding: 12px;
  }

  .case-metric-val {
    font-size: 20px;
  }

  .case-metric-label {
    font-size: 11px;
  }

  .case-body {
    padding: 20px;
  }

  .roadmap-timeline {
    padding-left: 30px;
  }

  .roadmap-line {
    left: 0;
    transform: none;
  }

  .roadmap-node {
    left: 0;
    transform: translate(-50%, -50%);
  }

  .roadmap-item {
    margin-bottom: 40px;
  }

  .roadmap-item:nth-child(odd) .roadmap-content,
  .roadmap-item:nth-child(even) .roadmap-content {
    width: 100%;
    margin-left: 30px;
    padding-left: 20px;
    padding-right: 20px;
    text-align: left;
  }

  .contact {
    padding: 80px 0;
  }

  .contact-form-card {
    padding: 28px;
  }

  .footer {
    padding: 50px 0 24px;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .about-img-sub {
    display: none;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 24px;
  }

  .hero-title {
    font-size: 30px;
  }

  .hero-stat-num {
    font-size: 28px;
  }

  .product-name {
    font-size: 26px;
  }

  .case-metrics {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .footer-links {
    grid-template-columns: 1fr;
  }
}

/* ---------- 滚动动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: all 0.3s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   全站动效增强
   ============================================ */

/* Hero 粒子画布 */
.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

/* Hero 网格叠加 */
.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 3;
  pointer-events: none;
  background: 
    radial-gradient(ellipse 60% 50% at 50% 45%, transparent 0%, rgba(5, 13, 26, 0.3) 100%);
}

/* 透视网格 */
.hero-grid-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 60%;
  z-index: 2;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.08) 1px, transparent 1px);
  background-size: 80px 80px;
  transform: perspective(500px) rotateX(60deg);
  transform-origin: bottom center;
  mask-image: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 100%);
  -webkit-mask-image: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 100%);
  pointer-events: none;
  animation: gridFlow 8s linear infinite;
}

@keyframes gridFlow {
  from {
    background-position: 0 0;
  }
  to {
    background-position: 0 80px;
  }
}

/* 底部地平线光晕 */
.hero-horizon-glow {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.6), 0 0 60px rgba(0, 212, 255, 0.3);
  z-index: 2;
  pointer-events: none;
}

/* Hero 居中布局 */
.hero-content-centered {
  max-width: none;
  width: 100%;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-top: 60px;
  color: #fff;
}

.hero-container {
  display: flex !important;
  justify-content: center;
  align-items: center;
  grid-template-columns: none;
  gap: 0;
  text-align: center;
  z-index: 5;
  position: relative;
}

.hero-eyebrow-glow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 50px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.5px;
  margin-bottom: 32px;
  animation: fadeInDown 0.8s ease-out 0.2s both;
}

.hero-eyebrow-dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-title-xl {
  font-size: clamp(2.2rem, 6vw, 5rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  white-space: nowrap;
  width: 100%;
  max-width: 1200px;
  text-align: center;
  display: block;
}

.hero-title-reveal {
  display: inline-block;
  opacity: 0;
  transform: translateY(40px);
  animation: heroTitleReveal 1s cubic-bezier(0.16, 1, 0.3, 1) 0.5s forwards;
}

@keyframes heroTitleReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-title-line.hero-title-accent {
  background: linear-gradient(135deg, #00d4ff 0%, #60a5fa 50%, #a78bfa 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
}

.hero-subtitle-lg {
  font-size: 18px;
  line-height: 1.8;
  max-width: 640px;
  margin: 0 auto 40px;
  color: rgba(255, 255, 255, 0.7);
}

.hero-fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease-out 0.9s both;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 发光按钮 */
.btn-glow {
  position: relative;
  overflow: visible;
}

.btn-glow::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(135deg, #00d4ff, #2563eb, #00d4ff);
  border-radius: inherit;
  z-index: -1;
  opacity: 0;
  transition: opacity 0.3s ease;
  filter: blur(8px);
  background-size: 200% 200%;
  animation: glowShift 3s ease-in-out infinite;
}

.btn-glow:hover::before {
  opacity: 0.7;
}

@keyframes glowShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.btn-glow-ghost:hover {
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.3), inset 0 0 20px rgba(0, 212, 255, 0.05);
}

/* 滚动指示器 — 位于按钮下方，水平对齐眉标中间的「·」分隔符 */
/* 滚动指示器 — 胶囊发光轨道 + 下落光点 + 箭头，与眉标「·」精确对齐 */
.scroll-hint {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  pointer-events: none;
  z-index: 10;
  animation: scrollHintEnter 0.8s ease-out 1.2s both, scrollHintFloat 2.8s ease-in-out 1.2s infinite;
  color: rgba(255, 255, 255, 0.35);
}

.scroll-hint-track {
  width: 3px;
  height: 44px;
  border-radius: 2px;
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.15) 0%,
    rgba(255, 255, 255, 0.08) 50%,
    rgba(255, 255, 255, 0.02) 100%
  );
  position: relative;
  overflow: hidden;
}

.scroll-hint-dot {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 10px;
  border-radius: 2px;
  background: var(--accent);
  box-shadow:
    0 0 4px var(--accent),
    0 0 8px rgba(0, 212, 255, 0.6),
    0 0 16px rgba(0, 212, 255, 0.3);
  animation: scrollHintDot 1.8s ease-in-out infinite;
}

@keyframes scrollHintDot {
  0% {
    top: 0;
    opacity: 0;
  }
  20% {
    opacity: 1;
  }
  80% {
    opacity: 1;
  }
  100% {
    top: calc(100% - 10px);
    opacity: 0;
  }
}

.scroll-hint-arrow {
  width: 12px;
  height: 8px;
  color: rgba(255, 255, 255, 0.3);
  animation: scrollHintArrowPulse 1.8s ease-in-out infinite;
}

@keyframes scrollHintArrowPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.7; }
}

@keyframes scrollHintEnter {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollHintFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* ============================================
   解决方案总览大图
   ============================================ */
.solution-hero {
  position: relative;
  margin-bottom: 50px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 320px;
}

.solution-hero-img {
  position: absolute;
  inset: 0;
}

.solution-hero-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 6s ease-out;
}

.solution-hero:hover .solution-hero-img img {
  transform: scale(1.05);
}

.solution-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 22, 40, 0.85) 0%,
    rgba(10, 22, 40, 0.5) 50%,
    rgba(0, 212, 255, 0.2) 100%
  );
}

.solution-hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 50px 60px;
}

.solution-hero-label {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(0, 212, 255, 0.15);
  border: 1px solid rgba(0, 212, 255, 0.4);
  border-radius: 4px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
  width: fit-content;
}

.solution-hero-content h3 {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.solution-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.solution-hero-tags span {
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 20px;
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.solution-hero-tags span:hover {
  background: rgba(0, 212, 255, 0.2);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ============================================
   3D 倾斜卡片 + 光效
   ============================================ */
.solution-card {
  transform-style: preserve-3d;
  perspective: 1000px;
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    rgba(0, 212, 255, 0.1) 0%,
    transparent 50%
  );
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
  z-index: 10;
}

.solution-card:hover::before {
  opacity: 1;
}

.solution-card:hover {
  transform: translateY(-8px) rotateX(2deg);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 40px rgba(0, 212, 255, 0.15);
}

.solution-card .solution-img img {
  transition: transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.solution-card:hover .solution-img img {
  transform: scale(1.1);
}

/* ============================================
   滚动进入动画（reveal 增强）
   ============================================ */
.reveal-left {
  opacity: 0;
  transform: translateX(-20px);
  transition: all 0.3s ease;
}

.reveal-left.active {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(20px);
  transition: all 0.3s ease;
}

.reveal-right.active {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.95);
  transition: all 0.3s ease;
}

.reveal-scale.active {
  opacity: 1;
  transform: scale(1);
}

/* 卡片错落延迟 */
.solution-grid .solution-card:nth-child(1) { transition-delay: 0.02s; }
.solution-grid .solution-card:nth-child(2) { transition-delay: 0.04s; }
.solution-grid .solution-card:nth-child(3) { transition-delay: 0.06s; }
.solution-grid .solution-card:nth-child(4) { transition-delay: 0.08s; }
.solution-grid .solution-card:nth-child(5) { transition-delay: 0.1s; }
.solution-grid .solution-card:nth-child(6) { transition-delay: 0.12s; }
.solution-grid .solution-card:nth-child(7) { transition-delay: 0.14s; }
.solution-grid .solution-card:nth-child(8) { transition-delay: 0.16s; }
.solution-grid .solution-card:nth-child(9) { transition-delay: 0.18s; }

/* ============================================
   视差滚动效果
   ============================================ */
.section-header {
  will-change: transform;
}

.parallax-slow {
  will-change: transform;
}

/* ============================================
   流光文字效果
   ============================================ */
.shimmer-text {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.3) 0%,
    #fff 50%,
    rgba(255, 255, 255, 0.3) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
  to {
    background-position: 200% center;
  }
}

/* ============================================
   Roadmap 增强动效
   ============================================ */
.roadmap-item .roadmap-content {
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.roadmap-item:hover .roadmap-content {
  transform: translateX(8px);
}

.roadmap-item:nth-child(even):hover .roadmap-content {
  transform: translateX(-8px);
}

.roadmap-node {
  transition: all 0.3s ease;
  position: relative;
}

.roadmap-node::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0;
  animation: nodePulse 2s ease-out infinite;
}

@keyframes nodePulse {
  0% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.6;
  }
  100% {
    transform: translate(-50%, -50%) scale(2.5);
    opacity: 0;
  }
}

/* ============================================
   响应式适配（新增组件）
   ============================================ */
@media (max-width: 1024px) {
  .solution-hero {
    height: 280px;
  }
  .solution-hero-content {
    padding: 40px;
  }
  .solution-hero-content h3 {
    font-size: 28px;
  }
  .hero-title-xl {
    font-size: clamp(2.5rem, 5vw, 4rem);
    white-space: nowrap;
  }
}

@media (max-width: 768px) {
  .hero-content-centered {
    padding-top: 60px;
  }
  .hero-title-xl {
    font-size: clamp(1.8rem, 5vw, 3.5rem);
    white-space: normal;
    line-height: 1.2;
  }
  .hero-subtitle-lg {
    font-size: 16px;
  }
  .hero-grid-overlay {
    height: 50%;
  }
  .hero-orb-1 { width: 250px; height: 250px; }
  .hero-orb-2 { width: 300px; height: 300px; }
  .hero-orb-3 { width: 200px; height: 200px; }
  .solution-hero {
    height: auto;
    min-height: 240px;
  }
  .solution-hero-content {
    padding: 30px 24px;
  }
  .solution-hero-content h3 {
    font-size: 22px;
    margin-bottom: 14px;
  }
  .solution-hero-tags {
    gap: 6px;
  }
  .solution-hero-tags span {
    padding: 4px 12px;
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  .hero-eyebrow-glow {
    font-size: 11px;
    padding: 6px 14px;
    margin-bottom: 20px;
  }
  .hero-subtitle-lg {
    font-size: 14px;
    margin-bottom: 30px;
  }
  .scroll-hint {
    margin-top: 32px;
  }
}

/* 减弱动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* 鼠标引力球面凹陷光影效果 */
.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 86px;
  height: 86px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 2;
  mix-blend-mode: screen;
  opacity: 0;
  transition: opacity 0.5s ease-out;
  will-change: transform;
  /* 多层渐变模拟球面凹陷：中心高光 → 暗环 → 青色边缘光晕（按86px小尺寸重新配比） */
  background:
    /* 最中心高光点 — 凹陷聚光 */
    radial-gradient(
      circle at 50% 50%,
      rgba(255, 255, 255, 0.35) 0%,
      rgba(0, 230, 255, 0.2) 25%,
      transparent 45%
    ),
    /* 凹陷暗环 — 制造向内凹陷的体积感 */
    radial-gradient(
      circle at 50% 50%,
      transparent 35%,
      rgba(0, 25, 60, 0.6) 55%,
      rgba(0, 35, 80, 0.35) 70%,
      transparent 82%
    ),
    /* 边缘青色光晕 — 球面折射高光边 */
    radial-gradient(
      circle at 50% 50%,
      transparent 68%,
      rgba(0, 212, 255, 0.4) 82%,
      rgba(0, 212, 255, 0.15) 92%,
      transparent 100%
    );
  transform: translate(-43px, -43px) scale(1);
}

.cursor-glow.is-active {
  opacity: 1;
}

/* 脉冲呼吸 — 模拟引力场波动 */
.cursor-glow.is-active::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(0, 212, 255, 0.15);
  animation: cursorGlowPulse 3s ease-out infinite;
}

/* 中心无人机形象 */
.cursor-drone {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -60%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  animation: droneFloat 2.8s ease-in-out infinite;
  pointer-events: none;
  user-select: none;
  z-index: 1;
}

.cursor-drone-svg {
  width: 36px;
  height: 36px;
  filter: drop-shadow(0 0 4px rgba(0, 212, 255, 0.6)) drop-shadow(0 0 8px rgba(0, 212, 255, 0.3));
}

.cursor-drone-rotors {
  transform-origin: 24px 24px;
  animation: rotorSpin 0.15s linear infinite;
}

@keyframes rotorSpin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes droneFloat {
  0%, 100% { transform: translate(-50%, -60%) translateY(0); }
  50% { transform: translate(-50%, -60%) translateY(-2px); }
}

.cursor-drone-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: #00d4ff;
  text-shadow:
    0 0 4px rgba(0, 212, 255, 0.8),
    0 0 8px rgba(0, 212, 255, 0.4),
    0 0 12px rgba(0, 212, 255, 0.2);
  line-height: 1;
  opacity: 0.9;
}

@keyframes cursorGlowPulse {
  0% {
    transform: scale(0.85);
    opacity: 0.8;
  }
  100% {
    transform: scale(1.2);
    opacity: 0;
  }
}


/* ===== 资质证书展示板块 ===== */
.certifications {
  padding: 20px 0 80px;
  background: linear-gradient(180deg, var(--gray-50) 0%, #fff 100%);
}
.certifications .container {
  max-width: 1280px;
}
.certifications-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  display: block;
}
@media (max-width: 768px) {
  .certifications { padding: 10px 0 48px; }
}