:root {
  --bg: #050505;
  --text: #f4f6fb;
  --text-soft: #d8deea;
  --green: #40dc80;
  --orange: #cb5d2f;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  color: var(--text);
  background: #050505;
}

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

.page {
  min-height: 100vh;
}

.hero {
  position: relative;
  min-height: 360px;
  background-image: linear-gradient(116deg, rgba(0, 0, 0, 0.55), rgba(0, 0, 0, 0.76)),
    url('https://images.unsplash.com/photo-1486325212027-8081e485255e?auto=format&fit=crop&w=1800&q=80');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 18% 26%, rgba(64, 220, 128, 0.54), rgba(64, 220, 128, 0) 32%);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.14), rgba(0, 0, 0, 0.64));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(1200px, 90vw);
  margin: 0 auto;
  text-align: center;
  padding: 54px 0 42px;
}

.hero-content h1 {
  margin: 0;
  line-height: 1.05;
  letter-spacing: 0.4px;
}

.brand {
  font-family: 'Oswald', sans-serif;
  font-size: clamp(56px, 8vw, 108px);
  text-shadow: 0 0 16px rgba(64, 220, 128, 0.72);
}

.cn {
  margin-left: 12px;
  font-size: clamp(38px, 6vw, 82px);
  font-weight: 700;
}

.hero p {
  margin: 12px 0 0;
  color: var(--orange);
  font-size: clamp(16px, 1.9vw, 30px);
  font-weight: 700;
  letter-spacing: 0.3px;
}

.features {
  width: min(1260px, 92vw);
  margin: 0 auto;
  padding: 30px 0 68px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 34px;
}

.feature-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 4px 12px 12px;
  border-radius: 20px;
  border: 1px solid transparent;
  transition: transform 250ms ease, border-color 250ms ease, background-color 250ms ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: #2f3545;
  background: linear-gradient(160deg, rgba(21, 24, 30, 0.75), rgba(16, 18, 24, 0.45));
}

.feature-card h2 {
  margin: 0;
  color: var(--orange);
  font-size: clamp(24px, 2.6vw, 44px);
}

.line {
  width: 76%;
  margin: 14px auto 30px;
  border-top: 3px solid #ececec;
}

.icon-wrap {
  width: clamp(168px, 20vw, 224px);
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid;
  place-items: center;
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.42);
  transition: transform 220ms ease;
}

.feature-card:hover .icon-wrap {
  transform: scale(1.04);
}

.icon-wrap svg {
  width: 68%;
  height: 68%;
}

.icon-wrap.green {
  background: #78d47f;
}

.icon-wrap.orange {
  background: #e6782f;
}

.icon-wrap.white {
  background: #f7f7f7;
  border: 4px solid #1f2a57;
}

.enter {
  margin-top: 18px;
  display: inline-block;
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid #2d3340;
  color: var(--text-soft);
  font-size: 14px;
}

.feature-card:hover .enter {
  border-color: #566187;
  color: #ffffff;
}

@media (max-width: 980px) {
  .features {
    gap: 16px;
  }
}

@media (max-width: 760px) {
  .hero {
    min-height: 300px;
  }

  .hero-content {
    padding: 36px 0 28px;
  }

  .hero p {
    font-size: 14px;
    line-height: 1.45;
  }

  .features {
    grid-template-columns: 1fr;
    width: min(94vw, 560px);
    gap: 26px;
    padding-bottom: 52px;
  }

  .line {
    margin-bottom: 20px;
  }
}