/* ========== BASE ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: #e2e8f0;
  background: #0b1120;
  overflow-x: hidden;
}
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #0f172a; }
::-webkit-scrollbar-thumb { background: #334155; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #475569; }

/* ========== NAVBAR ========== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: all 0.3s ease;
  background: #0b1120;
  border-bottom: 1px solid rgba(59, 130, 246, 0.1);
}
.navbar--scrolled {
  background: #0b1120;
  border-bottom: 1px solid rgba(59, 130, 246, 0.15);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.navbar__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navbar__brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.navbar__logo {
  width: 40px; height: 40px;
}
.navbar__logo svg { width: 100%; height: 100%; }
.navbar__title {
  font-size: 22px;
  font-weight: 800;
  color: #f8fafc;
  letter-spacing: 1px;
}
.navbar__menu {
  display: flex;
  align-items: center;
  gap: 32px;
}
.navbar__link {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
  position: relative;
}
.navbar__link:hover { color: #fff; }
.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: #3b82f6;
  transition: width 0.3s;
}
.navbar__link:hover::after { width: 100%; }
.navbar__cta {
  padding: 12px 28px;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.3s;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
}
.navbar__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}
.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.navbar__toggle span {
  display: block;
  width: 24px; height: 2px;
  background: #fff;
  transition: all 0.3s;
}

/* ========== HERO ========== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  overflow: hidden;
  padding-top: 84px;
}
.hero__carousel {
  position: relative;
  width: 100%;
  height: 100%;
}
.hero__slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  opacity: 0;
  z-index: 1;
  transition: opacity 0.8s ease-in-out;
}
.hero__slide--active {
  opacity: 1;
  z-index: 2;
}

/* Slide 1: Digital/Data flow */
.hero__slide--bg1 {
  background: 
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(37, 99, 235, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 30% 70%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
    linear-gradient(135deg, #070d1a 0%, #0a1628 40%, #0d1d33 100%);
}
.hero__slide--bg1::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(59,130,246,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero__slide--bg1::after {
  content: '';
  position: absolute;
  top: 10%; right: 5%;
  width: 600px; height: 600px;
  background: 
    repeating-conic-gradient(from 0deg, transparent 0deg 3deg, rgba(59,130,246,0.04) 3deg 6deg);
  border-radius: 50%;
  animation: rotate 60s linear infinite;
}

/* Slide 2: AI/Neural */
.hero__slide--bg2 {
  background: 
    radial-gradient(ellipse 80% 60% at 60% 30%, rgba(99, 102, 241, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
    linear-gradient(135deg, #0a0a1a 0%, #12102b 40%, #1a1535 100%);
}
.hero__slide--bg2::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 20% 30%, rgba(99,102,241,0.08) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(139,92,246,0.06) 0%, transparent 40%);
}
.hero__slide--bg2::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 800px; height: 800px;
  background: 
    radial-gradient(circle, rgba(99,102,241,0.06) 0%, transparent 70%),
    repeating-radial-gradient(circle at center, transparent 0, transparent 20px, rgba(99,102,241,0.03) 20px, rgba(99,102,241,0.03) 21px);
  border-radius: 50%;
}

/* Slide 3: Data Flow / Circuit */
.hero__slide--bg3 {
  background: 
    radial-gradient(ellipse 70% 50% at 50% 30%, rgba(245, 158, 11, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 60% at 80% 80%, rgba(239, 68, 68, 0.06) 0%, transparent 50%),
    linear-gradient(135deg, #1a1005 0%, #1a0f0a 40%, #0f0a1a 100%);
}
.hero__slide--bg3::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(245,158,11,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,158,11,0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  background-position: center;
}
.hero__slide--bg3::after {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle at 70% 30%, rgba(245,158,11,0.06) 0%, transparent 35%),
    radial-gradient(circle at 30% 70%, rgba(239,68,68,0.04) 0%, transparent 35%);
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero__content {
  position: relative;
  z-index: 10;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  width: 100%;
}
.hero__badge {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(59, 130, 246, 0.12);
  color: #60a5fa;
  font-size: 13px;
  font-weight: 600;
  border-radius: 100px;
  margin-bottom: 24px;
  border: 1px solid rgba(59, 130, 246, 0.2);
  backdrop-filter: blur(10px);
}
.hero__title {
  font-size: 56px;
  font-weight: 900;
  color: #f8fafc;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -1px;
  max-width: 600px;
}
.hero__subtitle {
  font-size: 18px;
  color: rgba(226, 232, 240, 0.65);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 520px;
}
.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero__btn {
  padding: 16px 40px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s;
  cursor: pointer;
  border: none;
  display: inline-block;
}
.hero__btn--primary {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.4);
}
.hero__btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(59, 130, 246, 0.55);
}
.hero__btn--secondary {
  background: rgba(255, 255, 255, 0.06);
  color: #e2e8f0;
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.hero__btn--secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-3px);
}

/* Tech decoration elements */
.hero__tech-deco {
  position: absolute;
  z-index: 5;
  pointer-events: none;
}
.hero__tech-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(59, 130, 246, 0.08);
}
.hero__tech-ring--1 {
  width: 500px; height: 500px;
  top: 10%; right: 10%;
  animation: pulse-ring 4s ease-in-out infinite;
}
.hero__tech-ring--2 {
  width: 400px; height: 400px;
  top: 15%; right: 15%;
  animation: pulse-ring 4s ease-in-out infinite 1s;
}
.hero__tech-ring--3 {
  width: 300px; height: 300px;
  top: 20%; right: 20%;
  animation: pulse-ring 4s ease-in-out infinite 2s;
}
@keyframes pulse-ring {
  0%, 100% { transform: scale(1); opacity: 0.3; }
  50% { transform: scale(1.05); opacity: 0.6; }
}
.hero__tech-lines {
  position: absolute;
  right: 0; top: 0; bottom: 0;
  width: 50%;
  overflow: hidden;
  pointer-events: none;
}
.hero__tech-line {
  position: absolute;
  background: linear-gradient(90deg, transparent, rgba(59,130,246,0.1), transparent);
  height: 1px;
  right: 0;
}
.hero__tech-dot {
  position: absolute;
  width: 4px; height: 4px;
  background: rgba(59, 130, 246, 0.4);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

/* Thumbnails at bottom */
.hero__thumbs {
  position: absolute;
  bottom: 0;
  left: 0; right: 0;
  z-index: 20;
  display: flex;
  justify-content: center;
  gap: 12px;
  padding: 0 24px 40px;
  background: linear-gradient(to top, rgba(7,13,26,0.95) 0%, rgba(7,13,26,0.7) 50%, transparent 100%);
}
.hero__thumb {
  width: 180px;
  height: 100px;
  border-radius: 10px;
  border: 2px solid rgba(255,255,255,0.08);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s;
  position: relative;
  background: rgba(30, 41, 59, 0.5);
}
.hero__thumb:hover {
  border-color: rgba(59, 130, 246, 0.3);
  transform: translateY(-4px);
}
.hero__thumb--active {
  border-color: #3b82f6;
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.25);
  transform: translateY(-4px);
}
.hero__thumb-bg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  font-weight: 500;
}
.hero__thumb-label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 8px;
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
  font-size: 12px;
  color: #fff;
  font-weight: 600;
  text-align: center;
}

/* ========== FEATURES ========== */
.features {
  padding: 100px 0;
  background: #0b1120;
}
.features__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.features__header {
  text-align: center;
  margin-bottom: 48px;
}
.features__title {
  font-size: 36px;
  font-weight: 800;
  color: #f8fafc;
  margin-bottom: 12px;
}
.features__subtitle {
  font-size: 16px;
  color: #64748b;
}
.features__tabs-wrapper {
  margin-bottom: 48px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 8px;
}
.features__tabs {
  display: flex;
  gap: 8px;
  min-width: max-content;
  justify-content: center;
}
.features__tab {
  padding: 14px 28px;
  border: none;
  background: rgba(30, 41, 59, 0.6);
  color: #94a3b8;
  font-size: 15px;
  font-weight: 600;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s;
  white-space: nowrap;
  border: 1px solid rgba(59, 130, 246, 0.08);
}
.features__tab:hover {
  color: #60a5fa;
  background: rgba(30, 41, 59, 0.8);
  border-color: rgba(59, 130, 246, 0.2);
}
.features__tab--active {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}
.features__tab--active:hover { color: white; }
.features__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.features__info {
  padding-top: 20px;
}
.features__info-title {
  font-size: 28px;
  font-weight: 800;
  color: #f8fafc;
  margin-bottom: 16px;
}
.features__info-desc {
  font-size: 15px;
  color: #94a3b8;
  line-height: 1.7;
  margin-bottom: 28px;
}
.features__sub-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.features__sub-tab {
  padding: 8px 16px;
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid rgba(148, 163, 184, 0.15);
  border-radius: 6px;
  font-size: 13px;
  color: #94a3b8;
  cursor: pointer;
  transition: all 0.3s;
  font-weight: 500;
}
.features__sub-tab:hover {
  border-color: rgba(59, 130, 246, 0.3);
  color: #60a5fa;
}
.features__sub-tab--active {
  background: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.4);
  color: #60a5fa;
}
.features__preview {
  display: flex;
  justify-content: center;
}
.features__phone {
  width: 280px;
  background: #0f172a;
  border-radius: 36px;
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(59, 130, 246, 0.1);
  overflow: hidden;
  position: relative;
}
.features__phone-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: #0f172a;
  position: relative;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.features__phone-time {
  font-size: 13px;
  font-weight: 600;
  color: #e2e8f0;
}
.features__phone-notch {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 80px; height: 20px;
  background: #0f172a;
  border-radius: 0 0 12px 12px;
  top: 0;
}
.features__phone-icons {
  display: flex;
  gap: 4px;
  align-items: center;
}
.features__phone-icons span {
  width: 4px; height: 4px;
  background: #e2e8f0;
  border-radius: 50%;
}
.features__phone-body {
  padding: 20px;
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.06) 0%, #0f172a 40%);
  min-height: 420px;
}
.features__phone-title {
  font-size: 14px;
  color: #e2e8f0;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.features__phone-title::before {
  content: '<';
  font-size: 16px;
  color: #60a5fa;
}
.features__phone-card {
  background: rgba(30, 41, 59, 0.6);
  border-radius: 16px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}
.features__phone-card-title {
  font-size: 17px;
  font-weight: 700;
  color: #60a5fa;
  text-align: center;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(59, 130, 246, 0.15);
}
.features__phone-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.features__phone-item:last-child { border-bottom: none; }
.features__phone-item-icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.features__phone-item-text {
  flex: 1;
  font-size: 13px;
  color: #e2e8f0;
  font-weight: 500;
}
.features__phone-item-status {
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 100px;
  font-weight: 600;
  white-space: nowrap;
}
.features__phone-item-status.active {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
}
.features__phone-item-status.done {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}
.features__phone-item-status.inactive {
  background: rgba(148, 163, 184, 0.1);
  color: #94a3b8;
}
.features__phone-item-status.urgent {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
}
.features__phone-item-status.pending {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
}
.features__phone-footer {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 16px;
  padding-top: 12px;
}
.features__phone-footer-dot {
  width: 6px; height: 6px;
  background: #334155;
  border-radius: 50%;
}
.features__phone-footer-dot:first-child {
  background: #3b82f6;
  width: 20px;
  border-radius: 3px;
}

/* ========== SYSTEMS ========== */
.systems {
  padding: 100px 0;
  background: #0f172a;
}
.systems__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.systems__header {
  text-align: center;
  margin-bottom: 60px;
}
.systems__title {
  font-size: 36px;
  font-weight: 800;
  color: #f8fafc;
  margin-bottom: 12px;
}
.systems__subtitle {
  font-size: 16px;
  color: #64748b;
}
.systems__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.systems__card {
  background: rgba(30, 41, 59, 0.4);
  border: 1px solid rgba(148, 163, 184, 0.08);
  border-radius: 16px;
  padding: 32px;
  transition: all 0.3s;
  animation: fadeInUp 0.6s ease forwards;
  opacity: 0;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.systems__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border-color: rgba(59, 130, 246, 0.2);
  background: rgba(30, 41, 59, 0.6);
}
.systems__card-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}
.systems__card-title {
  font-size: 18px;
  font-weight: 700;
  color: #f8fafc;
  margin-bottom: 10px;
}
.systems__card-desc {
  font-size: 14px;
  color: #94a3b8;
  line-height: 1.6;
  margin-bottom: 20px;
}
.systems__card-footer {
  display: flex;
  justify-content: flex-start;
}
.systems__card-tag {
  font-size: 12px;
  padding: 6px 14px;
  background: rgba(59, 130, 246, 0.1);
  color: #60a5fa;
  border-radius: 100px;
  font-weight: 500;
}

/* ========== ABOUT ========== */
.about {
  padding: 100px 0;
  background: #0b1120;
}
.about__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.about__header {
  text-align: center;
  margin-bottom: 60px;
}
.about__title {
  font-size: 36px;
  font-weight: 800;
  color: #f8fafc;
  margin-bottom: 12px;
}
.about__subtitle {
  font-size: 16px;
  color: #64748b;
}
.about__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 80px;
}
.about__card {
  background: rgba(30, 41, 59, 0.4);
  padding: 36px 28px;
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.08);
  transition: all 0.3s;
}
.about__card:hover {
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  transform: translateY(-4px);
  border-color: rgba(59, 130, 246, 0.2);
}
.about__card-num {
  font-size: 36px;
  font-weight: 900;
  color: #3b82f6;
  opacity: 0.4;
  margin-bottom: 16px;
  line-height: 1;
}
.about__card-title {
  font-size: 18px;
  font-weight: 700;
  color: #f8fafc;
  margin-bottom: 12px;
}
.about__card-desc {
  font-size: 14px;
  color: #94a3b8;
  line-height: 1.7;
}
.about__banner {
  background: linear-gradient(135deg, #1e3a5f 0%, #1e40af 100%);
  border-radius: 20px;
  padding: 60px;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(59, 130, 246, 0.2);
}
.about__banner::before {
  content: '';
  position: absolute;
  top: -100px; right: -100px;
  width: 300px; height: 300px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 50%;
}
.about__banner::after {
  content: '';
  position: absolute;
  bottom: -80px; left: -80px;
  width: 200px; height: 200px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 50%;
}
.about__banner-content { position: relative; z-index: 1; }
.about__banner-title {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 16px;
}
.about__banner-desc {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}
.about__banner-btn {
  display: inline-block;
  padding: 14px 40px;
  background: white;
  color: #1e40af;
  text-decoration: none;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 700;
  transition: all 0.3s;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}
.about__banner-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
}

/* ========== CONTACT ========== */
.contact {
  padding: 100px 0;
  background: #0b1120;
  position: relative;
  overflow: hidden;
}
.contact::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 600px; height: 600px;
  background: rgba(59, 130, 246, 0.03);
  border-radius: 50%;
}
.contact::after {
  content: '';
  position: absolute;
  bottom: -150px; left: -150px;
  width: 400px; height: 400px;
  background: rgba(59, 130, 246, 0.03);
  border-radius: 50%;
}
.contact__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}
.contact__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.contact__info { color: #f8fafc; }
.contact__title {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.2;
}
.contact__subtitle {
  font-size: 16px;
  color: #94a3b8;
  line-height: 1.7;
  margin-bottom: 48px;
}
.contact__stats {
  display: flex;
  gap: 40px;
}
.contact__stat { text-align: center; }
.contact__stat-num {
  font-size: 32px;
  font-weight: 800;
  color: #3b82f6;
  margin-bottom: 8px;
}
.contact__stat-label {
  font-size: 14px;
  color: #64748b;
}
.contact__form-wrapper {
  background: rgba(30, 41, 59, 0.5);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(148, 163, 184, 0.1);
  backdrop-filter: blur(10px);
}
.contact__form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.contact__form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.contact__form-label {
  font-size: 14px;
  font-weight: 600;
  color: #e2e8f0;
}
.contact__form-input {
  padding: 12px 16px;
  border: 1px solid rgba(148, 163, 184, 0.15);
  border-radius: 10px;
  font-size: 14px;
  color: #e2e8f0;
  transition: all 0.3s;
  background: rgba(15, 23, 42, 0.6);
  font-family: inherit;
  width: 100%;
}
.contact__form-input:focus {
  outline: none;
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
  background: rgba(15, 23, 42, 0.8);
}
.contact__form-input::placeholder { color: #475569; }
.contact__form-textarea {
  resize: vertical;
  min-height: 80px;
}
.contact__form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}
.contact__form-submit {
  padding: 14px;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
  margin-top: 8px;
  font-family: inherit;
}
.contact__form-submit:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(59, 130, 246, 0.4);
}
.contact__form-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}
.contact__form-success {
  text-align: center;
  color: #34d399;
  font-size: 14px;
  font-weight: 600;
  padding: 12px;
  background: rgba(16, 185, 129, 0.1);
  border-radius: 8px;
}

/* ========== FOOTER ========== */
.footer {
  background: #0f172a;
  padding: 60px 0 0;
  border-top: 1px solid rgba(148, 163, 184, 0.06);
}
.footer__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.footer__main {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 80px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
}
.footer__brand { color: #f8fafc; }
.footer__logo { margin-bottom: 16px; }
.footer__brand-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}
.footer__brand-desc {
  font-size: 14px;
  color: #64748b;
  line-height: 1.6;
}
.footer__links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.footer__col-title {
  font-size: 14px;
  font-weight: 700;
  color: #e2e8f0;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.footer__link {
  display: block;
  color: #64748b;
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 12px;
  transition: color 0.3s;
}
.footer__link:hover { color: #60a5fa; }
.footer__text {
  color: #64748b;
  font-size: 14px;
  margin-bottom: 12px;
}
.footer__bottom {
  padding: 24px 0;
  text-align: center;
}
.footer__copyright {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  color: #475569;
  font-size: 13px;
}
.footer__divider {
  color: #334155;
}
.footer__beian {
  color: #475569;
  text-decoration: none;
  font-size: 13px;
  transition: color 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.footer__beian:hover {
  color: #60a5fa;
}
.footer__beian-icon {
  width: 14px;
  height: 14px;
  opacity: 0.6;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .navbar__toggle { display: flex; }
  .navbar__menu {
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: rgba(11, 17, 32, 0.98);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    border-bottom: 1px solid rgba(59, 130, 246, 0.1);
  }
  .navbar__menu--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .navbar__cta { width: 100%; text-align: center; }

  .hero { min-height: 600px; }
  .hero__title { font-size: 40px; }
  .hero__content { padding-top: 100px; }
  .hero__thumb { width: 140px; height: 80px; }

  .features__content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .features__info { text-align: center; }
  .features__sub-tabs { justify-content: center; }
  .features__preview { order: -1; }
  .features__phone { width: 260px; }

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

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

  .contact__content {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .contact__info { text-align: center; }
  .contact__stats { justify-content: center; }

  .footer__main {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .footer__links { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .hero__title { font-size: 32px; }
  .hero__subtitle { font-size: 15px; }
  .hero__btn { padding: 12px 28px; font-size: 14px; }
  .hero__thumb { width: 100px; height: 60px; }
  .hero__thumb-label { font-size: 10px; padding: 4px; }

  .features { padding: 60px 0; }
  .features__title { font-size: 28px; }
  .features__info-title { font-size: 22px; }
  .features__tabs { justify-content: flex-start; padding: 0 4px; }
  .features__tab { padding: 12px 18px; font-size: 13px; }

  .systems { padding: 60px 0; }
  .systems__title { font-size: 28px; }
  .systems__grid { grid-template-columns: 1fr; }
  .systems__card { padding: 24px; }

  .about { padding: 60px 0; }
  .about__title { font-size: 28px; }
  .about__grid { grid-template-columns: 1fr; }
  .about__banner { padding: 40px 24px; }
  .about__banner-title { font-size: 24px; }

  .contact { padding: 60px 0; }
  .contact__title { font-size: 28px; }
  .contact__form-wrapper { padding: 24px; }
  .contact__stats { gap: 24px; }
  .contact__stat-num { font-size: 24px; }

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