:root {
  color-scheme: dark;
  --bg: #070910;
  --panel: rgba(17, 21, 34, 0.78);
  --line: rgba(133, 162, 255, 0.18);
  --text: #f3f7ff;
  --muted: #a8b1c7;
  --soft: #68748e;
  --gold: #ffc766;
  --blue: #59d7ff;
  --green: #51e0a6;
  --radius: 8px;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 8%, rgba(89, 215, 255, 0.17), transparent 24rem),
    radial-gradient(circle at 86% 18%, rgba(255, 199, 102, 0.1), transparent 25rem),
    linear-gradient(180deg, #070910 0%, #0b0f1b 44%, #070910 100%);
  color: var(--text);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), transparent 70%);
}

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

.page {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.top {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(6, 8, 14, 0.74);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
}

.brand-mark {
  position: relative;
  isolation: isolate;
  width: 48px;
  height: 48px;
  flex: 0 0 48px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 22% 18%, rgba(142, 255, 242, 0.18), transparent 28%),
    radial-gradient(circle at 80% 82%, rgba(82, 109, 255, 0.28), transparent 42%),
    linear-gradient(145deg, rgba(14, 27, 50, 0.98), rgba(3, 8, 18, 0.98));
  border: 1px solid rgba(128, 239, 255, 0.28);
  box-shadow:
    0 18px 38px rgba(0, 0, 0, 0.42),
    0 0 30px rgba(40, 219, 255, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.16);
}

.brand-mark::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 8px;
  width: 27px;
  height: 34px;
  border-radius: 2px;
  background: linear-gradient(135deg, #8efff2 0%, #28d6ff 48%, #526dff 100%);
  clip-path: polygon(36% 0, 94% 0, 62% 42%, 100% 42%, 22% 100%, 42% 56%, 0 56%);
  box-shadow:
    0 0 22px rgba(62, 223, 255, 0.44),
    inset 0 1px 0 rgba(255, 255, 255, 0.48);
}

.brand-mark::after {
  content: "";
  position: absolute;
  left: 12px;
  bottom: 8px;
  width: 25px;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(126, 255, 221, 0.92), rgba(72, 151, 255, 0.72));
  filter: blur(0.2px);
  opacity: 0.88;
}

.brand-mark span {
  width: 1px;
  height: 1px;
  overflow: hidden;
  color: transparent;
  font-size: 0;
}

.brand strong {
  display: flex;
  align-items: baseline;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  font-size: 31px;
  font-weight: 950;
  line-height: 0.9;
  letter-spacing: -0.025em;
}

.brand-word-num {
  color: #f8fbff;
  text-shadow: 0 0 18px rgba(97, 224, 255, 0.14);
}

.brand-word-gf {
  margin-left: 1px;
  color: transparent;
  background: linear-gradient(120deg, #8ffcf0 0%, #58d9ff 42%, #6f8cff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  text-shadow: 0 0 18px rgba(92, 224, 255, 0.18);
}

.brand-copy > span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.navlinks {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.navlinks a {
  color: var(--muted);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
}

.navlinks a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.hero {
  position: relative;
  padding: 54px 0 28px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 14% 30%, rgba(89, 215, 255, 0.18), transparent 18rem),
    radial-gradient(circle at 82% 20%, rgba(255, 199, 102, 0.12), transparent 14rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 250px;
  gap: 28px;
  align-items: center;
}

.crumb {
  margin-bottom: 16px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
}

.eyebrow {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 7px 11px;
  border-radius: 999px;
  border: 1px solid rgba(255, 199, 102, 0.26);
  color: #ffe1a0;
  background: rgba(255, 199, 102, 0.08);
  font-size: 13px;
  font-weight: 800;
}

h1 {
  margin: 0;
  font-size: clamp(34px, 6vw, 64px);
  line-height: 1.08;
  letter-spacing: 0;
}

.lead {
  max-width: 780px;
  color: #dbe5fb;
  font-size: 18px;
  line-height: 1.8;
}

.cover {
  height: 178px;
  border-radius: var(--radius);
  background-size: cover;
  background-position: center;
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.icon {
  width: 82px;
  height: 82px;
  border-radius: 18px;
  object-fit: cover;
  box-shadow: 0 16px 38px rgba(0, 0, 0, 0.42);
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(290px, 0.85fr);
  gap: 16px;
  margin: 18px auto 42px;
}

.card {
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.02)),
    rgba(17, 24, 39, 0.78);
  border-radius: var(--radius);
  padding: 20px;
}

.card h2 {
  margin: 0 0 12px;
  font-size: 24px;
}

.card h3 {
  margin: 18px 0 8px;
  font-size: 18px;
}

.card p,
.card li {
  color: #d7e0f2;
  line-height: 1.82;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.stat {
  display: block;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
}

.stat strong {
  display: block;
  color: var(--gold);
  font-size: 24px;
}

.stat span {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
}

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

.tag {
  padding: 7px 10px;
  border-radius: 8px;
  background: rgba(89, 215, 255, 0.12);
  color: #cdefff;
  border: 1px solid rgba(89, 215, 255, 0.22);
  font-size: 13px;
}

.actions {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  font-weight: 900;
}

.btn.primary {
  color: #160b08;
  background: linear-gradient(135deg, #ffd27c, #ff8a5f);
  border-color: transparent;
}

.btn.green {
  background: rgba(81, 224, 166, 0.12);
  border-color: rgba(81, 224, 166, 0.28);
  color: #a8ffd7;
}

.faq details {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 14px 0;
}

.faq summary {
  cursor: pointer;
  font-weight: 900;
}

.footer {
  padding: 26px 0 42px;
  color: var(--muted);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

@media (max-width: 900px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 13px 0;
  }

  .hero-grid,
  .grid {
    grid-template-columns: 1fr;
  }

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

  .navlinks {
    gap: 6px;
  }
}

@media (max-width: 640px) {
  .page {
    width: min(100% - 20px, 1120px);
  }

  .brand {
    width: 100%;
  }

  .brand strong {
    font-size: 28px;
  }

  .cover {
    height: 150px;
  }

  .lead {
    font-size: 16px;
    line-height: 1.66;
  }

  .card {
    padding: 15px;
  }
}