body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: #0a0f1a;
  color: #e6edf3;
}

/* 全局容器 */
.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
}

/* 导航 */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.nav-logo img {
  display: block;
  width: 168px;
  height: auto;
  margin-top: 0;
  box-shadow: none;
}

.nav-lang {
  color: #8aa0b8;
  font-size: 14px;
  letter-spacing: 0.4px;
}

.nav-lang a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-lang a:hover {
  color: #00c2ff;
}

@media (max-width: 640px) {
  nav {
    gap: 16px;
    flex-wrap: wrap;
  }

  .nav-logo img {
    width: 144px;
  }
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 128px 20px 112px;
  background:
    radial-gradient(circle at top center, rgba(0, 194, 255, 0.14), transparent 34%),
    radial-gradient(circle at center, #112240, #0a0f1a 72%);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: min(88vw, 820px);
  pointer-events: none;
}

.hero::before {
  top: 72px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 194, 255, 0.42), transparent);
}

.hero::after {
  bottom: 54px;
  height: 120px;
  border: 1px solid rgba(0, 194, 255, 0.08);
  border-top: none;
  border-radius: 0 0 48px 48px;
}

.hero-brand {
  position: relative;
  z-index: 1;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 18px;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  border: 1px solid rgba(0, 194, 255, 0.16);
  border-radius: 999px;
  background: rgba(7, 16, 30, 0.68);
  color: #7fdcff;
  font-size: 12px;
  letter-spacing: 3.2px;
  text-transform: uppercase;
}

.hero-kicker::before,
.hero-kicker::after {
  content: "";
  width: 18px;
  height: 1px;
  background: rgba(0, 194, 255, 0.5);
}

.hero h2 {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto 18px;
  font-size: clamp(38px, 6vw, 58px);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.08;
  text-shadow: 0 0 24px rgba(0, 194, 255, 0.14);
}

.hero p {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
  color: #8aa0b8;
  font-size: 18px;
  line-height: 1.8;
}

@media (max-width: 640px) {
  .hero {
    padding: 104px 20px 92px;
  }

  .hero-kicker {
    font-size: 11px;
    letter-spacing: 2.2px;
  }

  .hero::after {
    width: calc(100vw - 48px);
    bottom: 42px;
  }
}

/* 分区 */
section {
  padding: 80px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

h3 {
  font-size: 20px;
  margin-bottom: 20px;
  color: #00c2ff;
  letter-spacing: 1px;
}

/* About */
.about p {
  max-width: 700px;
  line-height: 1.7;
  color: #aab8c5;
}

/* 产品卡片 */
.products {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 30px;
}

.card {
  position: relative;
  overflow: hidden;
  flex: 1;
  min-width: 250px;
  min-height: 220px;
  padding: 28px;
  border-radius: 20px;
  border: 1px solid rgba(0, 194, 255, 0.14);
  background:
    linear-gradient(180deg, rgba(17, 34, 64, 0.72), rgba(7, 15, 26, 0.96)),
    rgba(255,255,255,0.02);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.03), 0 22px 50px rgba(0,0,0,0.28);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.card::before,
.card::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.card::before {
  inset: 14px;
  border: 1px solid rgba(0, 194, 255, 0.08);
  border-radius: 14px;
}

.card::after {
  top: -42px;
  right: -28px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 194, 255, 0.22), transparent 70%);
}

.card:hover {
  border-color: rgba(0, 194, 255, 0.42);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.04), 0 28px 60px rgba(0,0,0,0.34);
  transform: translateY(-6px);
}

.card-chip {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 12px;
  margin-bottom: 22px;
  border: 1px solid rgba(0, 194, 255, 0.16);
  border-radius: 999px;
  background: rgba(0, 194, 255, 0.06);
  color: #86e1ff;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.card h4 {
  position: relative;
  z-index: 1;
  margin: 0 0 12px;
  font-size: 24px;
  letter-spacing: 0.02em;
}

.card p {
  position: relative;
  z-index: 1;
  color: #9fb0c0;
  font-size: 14px;
  line-height: 1.8;
  max-width: 30ch;
}

.card-trace {
  position: absolute;
  right: 28px;
  bottom: 26px;
  width: 120px;
  height: 48px;
  opacity: 0.78;
  background:
    linear-gradient(90deg, transparent 0 10%, rgba(0, 194, 255, 0.5) 10% 12%, transparent 12% 28%, rgba(0, 194, 255, 0.75) 28% 30%, transparent 30% 48%, rgba(0, 194, 255, 0.38) 48% 50%, transparent 50% 68%, rgba(0, 194, 255, 0.82) 68% 70%, transparent 70% 100%),
    linear-gradient(180deg, transparent 0 62%, rgba(0, 194, 255, 0.18) 62% 64%, transparent 64% 100%);
  clip-path: polygon(0 78%, 14% 78%, 22% 30%, 35% 30%, 42% 58%, 56% 58%, 66% 16%, 79% 16%, 88% 66%, 100% 66%, 100% 100%, 0 100%);
}

.screenshot-section {
  position: relative;
}

.console-frame {
  position: relative;
  overflow: hidden;
  max-width: 920px;
  margin-top: 28px;
  border: 1px solid rgba(0, 194, 255, 0.18);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(15, 23, 37, 0.98), rgba(8, 13, 24, 0.98));
  box-shadow: 0 28px 80px rgba(0,0,0,0.42), inset 0 0 0 1px rgba(255,255,255,0.03);
}

.console-frame::before {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(0, 194, 255, 0.08);
  border-radius: 18px;
  pointer-events: none;
}

.console-topbar {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  padding: 18px 22px;
  border-bottom: 1px solid rgba(0, 194, 255, 0.12);
  background: linear-gradient(180deg, rgba(0, 194, 255, 0.08), rgba(0, 194, 255, 0.02));
}

.console-dots {
  display: inline-flex;
  gap: 8px;
}

.console-dots span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(127, 220, 255, 0.9);
  box-shadow: 0 0 12px rgba(0, 194, 255, 0.45);
}

.console-label,
.console-status {
  color: #87dfff;
  font-size: 12px;
  letter-spacing: 2.2px;
  text-transform: uppercase;
}

.console-status {
  padding: 6px 10px;
  border: 1px solid rgba(0, 194, 255, 0.16);
  border-radius: 999px;
  background: rgba(0, 194, 255, 0.06);
}

.console-screen {
  position: relative;
  padding: 26px;
}

.console-grid {
  position: absolute;
  inset: 26px;
  border-radius: 14px;
  background-image:
    linear-gradient(rgba(0, 194, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 194, 255, 0.07) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.9), rgba(0,0,0,0.45));
  pointer-events: none;
}

.console-screen img {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 100%;
  margin-top: 0;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 18px 42px rgba(0,0,0,0.45);
}

/* License */
.license {
  text-align: center;
}

.button {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 30px;
  border: 1px solid #00c2ff;
  color: #00c2ff;
  text-decoration: none;
  border-radius: 25px;
  transition: 0.3s;
}

.button:hover {
  background: #00c2ff;
  color: #0a0f1a;
}

/* Footer */
footer {
  text-align: center;
  padding: 40px;
  color: #6c7a89;
  font-size: 13px;
}

input, textarea {
  width: 100%;
  padding: 10px;
  margin-top: 10px;
  background: #0f1725;
  border: 1px solid #1f2a3a;
  color: white;
  border-radius: 5px;
}

button {
  margin-top: 10px;
  padding: 10px 20px;
  background: #00c2ff;
  border: none;
  color: #0a0f1a;
  border-radius: 5px;
  cursor: pointer;
}

ul {
  color: #9fb0c0;
  line-height: 1.8;
}

img {
  margin-top: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

@media (max-width: 820px) {
  .products {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .card {
    min-height: 0;
    padding: 24px;
  }

  .card-trace {
    position: relative;
    right: auto;
    bottom: auto;
    margin-top: 24px;
    width: 100%;
    max-width: 140px;
  }

  .console-topbar {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .console-screen {
    padding: 18px;
  }

  .console-grid {
    inset: 18px;
  }
}