:root {
  --bg: #081322;
  --surface: rgba(10, 21, 38, 0.76);
  --line: rgba(95, 182, 255, 0.18);
  --text: #eff6ff;
  --muted: rgba(224, 236, 255, 0.72);
  --primary: #24a6ff;
  --shadow: 0 24px 90px rgba(0, 0, 0, 0.26);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Aptos", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 10% 0%, rgba(36, 166, 255, 0.22), transparent 24%),
    radial-gradient(circle at 90% 8%, rgba(255, 82, 71, 0.18), transparent 18%),
    linear-gradient(180deg, #050d18 0%, #091627 48%, #071120 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 38px 38px;
  pointer-events: none;
}

.page-glow {
  position: fixed;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.22;
  pointer-events: none;
}

.page-glow-left {
  top: 90px;
  left: -120px;
  background: #1e8fff;
}

.page-glow-right {
  right: -120px;
  bottom: 80px;
  background: #ff4f46;
}

.site-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 24px auto 60px;
  position: relative;
  z-index: 1;
}

.topbar {
  position: sticky;
  top: 14px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 20px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(7, 17, 32, 0.82);
  backdrop-filter: blur(18px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, #0b7cff, #31c7ff);
  box-shadow: 0 12px 34px rgba(36, 166, 255, 0.28);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-copy strong {
  font-size: 18px;
}

.brand-copy small,
.nav a,
.hero-text,
.section-heading p,
.feature-card p,
.capability-note p,
.price-card li,
.faq-grid p,
.contact-card p,
.stats span,
.ad-card figcaption,
.free-note span,
.wechat-box span {
  color: var(--muted);
}

.nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.nav a {
  text-decoration: none;
  font-size: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, #0d83ff, #31b7ff);
  box-shadow: 0 12px 30px rgba(22, 129, 255, 0.3);
}

.button-secondary {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.08);
}

.button-ghost {
  color: #fff;
  border-color: rgba(36, 166, 255, 0.3);
  background: rgba(36, 166, 255, 0.14);
}

.hero {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 30px;
  align-items: center;
  padding: 72px 0 44px;
}

.eyebrow {
  margin: 0 0 12px;
  color: #7fc9ff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1,
.section h2,
.contact-card h2 {
  margin: 0;
  line-height: 1.05;
  letter-spacing: -0.04em;
  font-family: Georgia, "Times New Roman", "Songti SC", serif;
}

.hero h1 {
  font-size: clamp(42px, 6vw, 70px);
  max-width: 11ch;
}

.hero-text {
  margin-top: 22px;
  max-width: 620px;
  font-size: 18px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 28px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  list-style: none;
  padding: 0;
  margin: 28px 0 0;
}

.hero-tags li {
  padding: 10px 14px;
  border: 1px solid rgba(127, 201, 255, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
}

.hero-image {
  width: 100%;
  display: block;
  border-radius: 28px;
  border: 1px solid rgba(120, 204, 255, 0.2);
  box-shadow: var(--shadow);
}

.zoom-link {
  display: block;
}

.zoom-link img {
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.zoom-link:hover img {
  transform: scale(1.01);
  box-shadow: 0 26px 96px rgba(0, 0, 0, 0.34);
}

.stats,
.feature-grid,
.pricing-grid,
.faq-grid,
.ad-grid {
  display: grid;
  gap: 18px;
}

.stats {
  grid-template-columns: repeat(4, 1fr);
}

.stats article,
.feature-card,
.capability-panel,
.price-card,
.faq-grid article,
.ad-card,
.contact-card,
.free-note {
  border: 1px solid var(--line);
  border-radius: 26px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.stats article {
  padding: 24px;
}

.stats strong {
  display: block;
  margin-bottom: 10px;
  font-size: 26px;
}

.section {
  padding-top: 78px;
}

.section-heading {
  max-width: 860px;
  margin-bottom: 28px;
}

.section-heading h2,
.contact-card h2 {
  font-size: clamp(34px, 4.8vw, 56px);
}

.feature-grid {
  grid-template-columns: repeat(3, 1fr);
}

.feature-card,
.price-card,
.faq-grid article,
.ad-card {
  padding: 26px;
}

.feature-card h3,
.price-card h3,
.faq-grid h3 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 22px;
}

.feature-card p,
.faq-grid p,
.contact-card p {
  margin: 0;
  line-height: 1.75;
}

.capability-panel {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  padding: 28px;
}

.capability-list {
  margin: 0;
  padding-left: 24px;
  line-height: 1.95;
}

.capability-note {
  padding: 24px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.06);
}

.capability-note strong,
.free-note strong {
  display: block;
  margin-bottom: 10px;
  font-size: 20px;
}

.ad-grid {
  grid-template-columns: repeat(3, 1fr);
  align-items: start;
}

.ad-card {
  overflow: hidden;
}

.ad-card img {
  width: 100%;
  display: block;
  border-radius: 18px;
}

.ad-card figcaption {
  margin-top: 14px;
  line-height: 1.7;
}

.pricing-grid {
  grid-template-columns: repeat(3, 1fr);
}

.price-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.price-card.featured {
  background: linear-gradient(180deg, rgba(18, 56, 95, 0.92), rgba(9, 22, 39, 0.86));
  transform: translateY(-8px);
}

.plan {
  margin: 0;
  color: #7fc9ff;
  font-weight: 800;
}

.price-card strong {
  font-size: 40px;
  line-height: 1;
}

.price-card strong span {
  font-size: 16px;
  color: var(--muted);
  font-weight: 500;
}

.price-card ul {
  margin: 0;
  padding-left: 20px;
  line-height: 1.9;
}

.free-note {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 20px;
  padding: 22px 24px;
}

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

.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  margin-top: 78px;
  padding: 34px;
  background:
    radial-gradient(circle at top right, rgba(36, 166, 255, 0.24), transparent 20%),
    rgba(8, 20, 35, 0.88);
}

.wechat-box {
  display: inline-flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 20px;
  padding: 16px 18px;
  border: 1px solid rgba(127, 201, 255, 0.2);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.05);
}

.wechat-box strong {
  font-size: 28px;
  letter-spacing: 0.04em;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (max-width: 1080px) {
  .hero,
  .feature-grid,
  .pricing-grid,
  .faq-grid,
  .stats,
  .capability-panel,
  .ad-grid,
  .contact-card {
    grid-template-columns: 1fr;
  }

  .contact-card {
    display: grid;
  }
}

@media (max-width: 760px) {
  .site-shell {
    width: min(100% - 20px, 1180px);
    margin-top: 12px;
  }

  .topbar {
    position: static;
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav,
  .hero-actions,
  .hero-tags,
  .contact-actions,
  .free-note {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .hero {
    padding-top: 44px;
  }
}