:root {
  --bg-dark: #0b1120;
  --bg-card: #111827;
  --bg-elevated: #1a2332;
  --primary: #0ea5e9;
  --primary-light: #38bdf8;
  --accent: #06b6d4;
  --accent-glow: rgba(14, 165, 233, 0.35);
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --border: rgba(148, 163, 184, 0.12);
  --gradient-hero: linear-gradient(135deg, #0b1120 0%, #0f2744 50%, #0b1120 100%);
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

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

.logo-icon,
.drone-icon,
.about-image .icon,
.qual-icon,
.honor-icon,
.achieve-icon,
.contact-icon,
.map-icon,
.news-cover,
.news-list-cover,
.article-cover {
  font-family: "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", "Segoe UI Symbol", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-style: normal;
  line-height: 1;
}

a {
  color: inherit;
  text-decoration: none;
}

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

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

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}

.header.scrolled {
  background: rgba(11, 17, 32, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  overflow: hidden;
}

.logo-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-height: none;
  margin: 0;
}

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

.nav a {
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: color var(--transition);
  position: relative;
}

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

.nav a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary-light);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(14, 165, 233, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14, 165, 233, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-text {
  max-width: 620px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  background: rgba(14, 165, 233, 0.08);
  border: 1px solid rgba(14, 165, 233, 0.18);
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--primary-light);
  line-height: 1.4;
  transition: var(--transition);
}

.hero-tag:hover {
  background: rgba(14, 165, 233, 0.14);
  border-color: rgba(14, 165, 233, 0.35);
}

.hero-tag--pulse {
  background: rgba(14, 165, 233, 0.12);
  border-color: rgba(14, 165, 233, 0.28);
  font-weight: 600;
}

.hero-tag .tag-dot {
  width: 7px;
  height: 7px;
  background: var(--primary);
  border-radius: 50%;
  flex-shrink: 0;
  animation: pulse 2s infinite;
}

.hero h1 {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero-title-line {
  font-size: clamp(2rem, 4.2vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--text);
}

.hero-title-highlight {
  font-size: clamp(1.5rem, 3.2vw, 2.4rem);
  font-weight: 800;
  line-height: 1.25;
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(14, 165, 233, 0.1);
  border: 1px solid rgba(14, 165, 233, 0.25);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--primary-light);
  margin-bottom: 24px;
}

.hero-badge span {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.02rem;
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 32px;
  max-width: 500px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

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

.drone-scene {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1;
  position: relative;
}

.drone-ring {
  position: absolute;
  inset: 10%;
  border: 2px dashed rgba(14, 165, 233, 0.2);
  border-radius: 50%;
  animation: rotate 30s linear infinite;
}

.drone-ring:nth-child(2) {
  inset: 20%;
  animation-direction: reverse;
  animation-duration: 20s;
}

@keyframes rotate {
  to { transform: rotate(360deg); }
}

.drone-body {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 200px;
  height: 200px;
  background: linear-gradient(145deg, var(--bg-elevated), var(--bg-card));
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow), 0 0 60px var(--accent-glow);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translate(-50%, -50%) translateY(0); }
  50% { transform: translate(-50%, -50%) translateY(-12px); }
}

.drone-icon {
  font-size: 4rem;
  filter: drop-shadow(0 0 20px var(--accent-glow));
}

.drone-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-stats {
  display: flex;
  gap: 36px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.stat-item strong {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary-light);
}

.stat-item span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Section common */
section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 60px;
}

.section-header.row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  text-align: left;
  max-width: none;
  margin-bottom: 48px;
}

.section-header.row .section-header-text {
  max-width: 560px;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* About */
.about {
  background: var(--bg-card);
}

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

.about-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #0f2744, #1a3a5c);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.about-image.has-photo {
  background: #0b1120;
}

.about-image.has-photo .about-image-inner {
  width: 100%;
  height: 100%;
  padding: 0;
}

.about-image.has-photo .about-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-height: none;
}

.about-image-inner {
  text-align: center;
  padding: 40px;
}

.about-image-inner .icon {
  font-size: 5rem;
  margin-bottom: 16px;
  opacity: 0.9;
}

.about-image-inner p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.about-content h3 {
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.about-content p {
  color: var(--text-muted);
  margin-bottom: 16px;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 28px;
}

.about-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--bg-elevated);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.about-feature .check {
  width: 28px;
  height: 28px;
  background: rgba(14, 165, 233, 0.15);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 0.85rem;
  flex-shrink: 0;
}

/* Culture cards */
.culture-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.culture-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  transition: var(--transition);
}

.culture-card:hover {
  border-color: rgba(14, 165, 233, 0.3);
  transform: translateY(-4px);
}

.culture-card .icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.culture-card h4 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--primary-light);
}

.culture-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Business scope */
.scope-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.scope-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: var(--transition);
}

.scope-item:hover {
  border-color: rgba(14, 165, 233, 0.3);
  transform: translateY(-4px);
}

.scope-item .icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.scope-item h4 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.scope-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Platforms */
.platforms {
  padding: 80px 0;
  background: var(--bg-dark);
  position: relative;
}

.platforms::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.platform-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.platform-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  overflow: hidden;
  transition: var(--transition);
}

.platform-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.platform-card:hover {
  transform: translateY(-6px);
  border-color: rgba(14, 165, 233, 0.35);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
}

.platform-card .platform-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(14, 165, 233, 0.12);
  border: 1px solid rgba(14, 165, 233, 0.25);
  border-radius: 50px;
  font-size: 0.78rem;
  color: var(--primary-light);
  margin-bottom: 20px;
}

.platform-card .platform-icon {
  font-size: 3rem;
  margin-bottom: 20px;
}

.platform-card h3 {
  font-size: clamp(1.3rem, 2.5vw, 1.6rem);
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.platform-card h3 .sub {
  display: block;
  font-size: 0.85em;
  font-weight: 600;
  color: var(--primary-light);
  margin-top: 6px;
}

.platform-card > p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
  line-height: 1.7;
}

.platform-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.platform-features li {
  list-style: none;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.platform-features li::before {
  content: "▸";
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 1px;
}


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

.qual-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  transition: var(--transition);
}

.qual-card:hover {
  border-color: rgba(14, 165, 233, 0.35);
  transform: translateY(-4px);
}

.qual-card .qual-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: rgba(14, 165, 233, 0.12);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  overflow: hidden;
}

.qual-card .qual-icon img,
.honor-item .honor-icon img,
.achieve-card .achieve-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-height: none;
  margin: 0;
}

.honor-item .honor-icon,
.achieve-card .achieve-icon {
  overflow: hidden;
}

.qual-card h4 {
  font-size: 1.05rem;
  margin-bottom: 10px;
}

.qual-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.qual-card .qual-no {
  display: inline-block;
  margin-top: 14px;
  padding: 4px 12px;
  background: rgba(14, 165, 233, 0.08);
  border-radius: 6px;
  font-size: 0.78rem;
  color: var(--primary-light);
}

/* Honors */
.honors {
  background: var(--bg-card);
}

.honor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.honor-item {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
}

.honor-item:hover {
  border-color: rgba(14, 165, 233, 0.3);
  transform: translateY(-3px);
}

.honor-item .honor-icon {
  font-size: 2.2rem;
  margin-bottom: 14px;
}

.honor-item h4 {
  font-size: 0.95rem;
  margin-bottom: 8px;
  line-height: 1.4;
}

.honor-item .honor-year {
  font-size: 0.8rem;
  color: var(--primary-light);
}

/* Achievements */
.achieve-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.achieve-stat {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.achieve-stat strong {
  display: block;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary-light);
  margin-bottom: 8px;
}

.achieve-stat span {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.achieve-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.achieve-card {
  display: flex;
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
}

.achieve-card:hover {
  border-color: rgba(14, 165, 233, 0.3);
}

.achieve-card .achieve-icon {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  background: rgba(14, 165, 233, 0.12);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.achieve-card h4 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.achieve-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Contact */
.contact {
  background: var(--bg-card);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

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

.contact-item {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.contact-item .contact-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  background: rgba(14, 165, 233, 0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  overflow: hidden;
}

.contact-item .contact-icon img,
.map-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-height: none;
  margin: 0;
}

.contact-item h4 {
  font-size: 0.95rem;
  margin-bottom: 6px;
}

.contact-item p,
.contact-item a {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.contact-item a:hover {
  color: var(--primary-light);
}

.contact-map {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.contact-map .map-icon {
  font-size: 4rem;
  margin-bottom: 16px;
  opacity: 0.8;
}

.contact-map h4 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.contact-map p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-simple {
  background: linear-gradient(180deg, #060a14 0%, #04070f 100%);
  padding: 28px 0;
  border-top: 1px solid var(--border);
}

.footer-simple .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px 24px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-simple .footer-copy {
  line-height: 1.5;
}

.footer-simple .footer-beian a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 50px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-simple .footer-beian a:hover {
  color: var(--primary-light);
  border-color: rgba(14, 165, 233, 0.35);
  background: rgba(14, 165, 233, 0.08);
}

.footer-simple .footer-beian a::before {
  content: "";
  width: 14px;
  height: 14px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2394a3b8'%3E%3Cpath d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 15h2v2h-2v-2zm0-10h2v8h-2V7z'/%3E%3C/svg%3E") center/contain no-repeat;
  opacity: 0.8;
}

/* News */
.news {
  background: var(--bg-card);
}

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

.news-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-6px);
  border-color: rgba(14, 165, 233, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.news-cover {
  height: 180px;
  background: linear-gradient(135deg, #0f2744, #164e63);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.news-cover img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-height: none;
  margin: 0;
}

.news-list-cover {
  overflow: hidden;
}

.news-list-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-height: none;
  margin: 0;
}

.article-cover img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin: 0 auto;
}

.news-cover .category {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 4px 12px;
  background: rgba(14, 165, 233, 0.2);
  border: 1px solid rgba(14, 165, 233, 0.3);
  border-radius: 50px;
  font-size: 0.75rem;
  color: var(--primary-light);
}

.news-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-body h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-body p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.news-meta .read-more {
  color: var(--primary-light);
  font-weight: 600;
  transition: color var(--transition);
}

.news-card:hover .read-more {
  color: var(--primary);
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  padding-left: 60px;
  padding-bottom: 40px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: 12px;
  top: 4px;
  width: 18px;
  height: 18px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.2);
}

.timeline-year {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary-light);
  margin-bottom: 6px;
}

.timeline-item h4 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.timeline-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* CTA */
.cta {
  padding: 80px 0;
}

.cta-box {
  background: linear-gradient(135deg, #0c4a6e, #0e7490);
  border-radius: var(--radius-lg);
  padding: 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
}

.cta-box h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 16px;
  position: relative;
}

.cta-box p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 32px;
  position: relative;
}

.cta-box .btn-primary {
  background: #fff;
  color: #0c4a6e;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  position: relative;
}

.cta-box .btn-primary:hover {
  background: #f0f9ff;
}

/* Footer */
.footer {
  background: #060a14;
  padding: 60px 0 30px;
  border-top: 1px solid var(--border);
}

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

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 16px;
  max-width: 280px;
}

.footer h4 {
  font-size: 0.95rem;
  margin-bottom: 20px;
  color: var(--text);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color var(--transition);
}

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

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* News page */
.page-hero {
  padding: 140px 0 60px;
  background: var(--gradient-hero);
  position: relative;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.page-hero p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.news-filters {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.9rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  display: inline-block;
  text-decoration: none;
}

.filter-btn:hover,
.filter-btn.active {
  background: rgba(14, 165, 233, 0.15);
  border-color: rgba(14, 165, 233, 0.4);
  color: var(--primary-light);
  text-decoration: none;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.news-list-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.news-list-item:hover {
  border-color: rgba(14, 165, 233, 0.3);
  transform: translateX(4px);
}

.news-list-cover {
  background: linear-gradient(135deg, #0f2744, #164e63);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  min-height: 140px;
}

.news-list-body {
  padding: 24px 24px 24px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.news-list-body .category {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--primary-light);
  margin-bottom: 8px;
}

.news-list-body h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.news-list-body p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Article detail */
.article-page {
  padding: 120px 0 80px;
}

.article-header {
  max-width: 800px;
  margin: 0 auto 40px;
  text-align: center;
}

.article-header .category {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(14, 165, 233, 0.15);
  border-radius: 50px;
  font-size: 0.8rem;
  color: var(--primary-light);
  margin-bottom: 16px;
}

.article-header h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
}

.article-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.article-cover {
  max-width: 800px;
  margin: 0 auto 40px;
  height: 320px;
  background: linear-gradient(135deg, #0f2744, #164e63);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
}

.article-content {
  max-width: 760px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-muted);
}

.article-content p {
  margin-bottom: 20px;
}

.article-content h2 {
  color: var(--text);
  font-size: 1.4rem;
  margin: 36px 0 16px;
}

.article-back {
  max-width: 760px;
  margin: 48px auto 0;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-content,
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-visual {
    order: -1;
  }

  .drone-scene {
    max-width: 320px;
    margin: 0 auto;
  }

  .culture-grid,
  .news-grid,
  .platform-grid,
  .qual-grid,
  .honor-grid {
    grid-template-columns: 1fr 1fr;
  }

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

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

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

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

  .section-header.row {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(11, 17, 32, 0.98);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
  }

  .nav.open {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }

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

  .hero-tags {
    gap: 8px;
  }

  .hero-tag {
    font-size: 0.78rem;
    padding: 6px 12px;
  }

  .hero-title-line {
    font-size: clamp(1.75rem, 7vw, 2.2rem);
  }

  .hero-title-highlight {
    font-size: clamp(1.25rem, 5.5vw, 1.65rem);
  }

  .about-features,
  .culture-grid,
  .news-grid,
  .scope-grid,
  .platform-grid,
  .qual-grid,
  .honor-grid,
  .achieve-stats,
  .achieve-list {
    grid-template-columns: 1fr;
  }

  .platform-card {
    padding: 28px 24px;
  }

  .footer-simple .container {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .cta-box {
    padding: 40px 24px;
  }

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

  .news-list-cover {
    min-height: 120px;
  }

  .news-list-body {
    padding: 0 24px 24px;
  }
}

.about-image-inner img,
.drone-icon img,
.map-icon img {
  max-width: 100%;
  max-height: 160px;
  object-fit: contain;
  margin: 0 auto;
}

.footer-simple a {
  color: inherit;
}