:root {
  color-scheme: dark;
  --ink: #f8fbff;
  --muted: #b9c5d6;
  --line: rgba(255, 255, 255, 0.18);
  --cyan: #3ee8ff;
  --green: #83ff9d;
  --orange: #ffb05c;
  --panel: rgba(7, 13, 24, 0.72);
  --panel-strong: rgba(12, 22, 38, 0.9);
  --shadow: 0 24px 90px rgba(0, 0, 0, 0.48);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #070b12;
  color: var(--ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

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

.hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  padding: 28px clamp(20px, 4vw, 64px) 34px;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
}

.hero-image,
.hero-scrim {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  object-position: center;
  filter: saturate(1.12) contrast(1.05);
}

.hero-scrim {
  background:
    linear-gradient(90deg, rgba(2, 5, 10, 0.93) 0%, rgba(5, 10, 20, 0.75) 39%, rgba(5, 10, 20, 0.08) 78%),
    linear-gradient(180deg, rgba(2, 5, 10, 0.6) 0%, rgba(2, 5, 10, 0.18) 46%, rgba(2, 5, 10, 0.88) 100%);
}

.topbar,
.hero-content,
.hero-panel {
  position: relative;
  z-index: 1;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #edf7ff;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(62, 232, 255, 0.55);
  background: rgba(62, 232, 255, 0.12);
  border-radius: 8px;
  font-size: 13px;
  letter-spacing: 0;
}

.wechat-link,
.secondary-button {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
}

.wechat-link {
  padding: 10px 15px;
  border-radius: 8px;
  color: #dff8ff;
  font-weight: 700;
  white-space: nowrap;
}

.hero-content {
  align-self: center;
  max-width: 920px;
  padding: 64px 0 42px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--green);
  font-size: clamp(13px, 1.7vw, 16px);
  font-weight: 800;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 920px;
  margin-bottom: 22px;
  font-size: clamp(44px, 6.4vw, 84px);
  line-height: 0.96;
  letter-spacing: 0;
  font-weight: 900;
  text-wrap: balance;
}

.hero-copy {
  max-width: 590px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 23px);
  line-height: 1.65;
  font-weight: 500;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  border-radius: 8px;
  font-weight: 900;
}

.primary-button {
  background: var(--cyan);
  color: #04111a;
  box-shadow: 0 18px 54px rgba(62, 232, 255, 0.28);
}

.secondary-button {
  color: #f4fbff;
}

.hero-panel {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 1120px;
}

.hero-panel article,
.setup-card,
.offer {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-panel article {
  min-height: 172px;
  padding: 22px;
  border-radius: 8px;
}

.hero-panel span {
  display: block;
  color: var(--cyan);
  font-weight: 900;
  margin-bottom: 24px;
}

.hero-panel h2 {
  margin-bottom: 8px;
  font-size: clamp(22px, 2.3vw, 32px);
  line-height: 1.1;
}

.hero-panel p,
.setup-card li,
.offer p {
  color: var(--muted);
  line-height: 1.72;
}

.conversion {
  min-height: 100svh;
  background:
    linear-gradient(135deg, rgba(62, 232, 255, 0.12), transparent 34%),
    linear-gradient(315deg, rgba(255, 176, 92, 0.14), transparent 35%),
    #090f18;
  padding: clamp(34px, 5vw, 54px) clamp(20px, 4vw, 64px);
  display: flex;
  align-items: center;
}

.conversion-inner {
  width: min(1180px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(18px, 3vw, 34px);
  align-items: stretch;
}

.offer {
  border-radius: 8px;
  padding: clamp(22px, 3vw, 32px);
}

.offer h2 {
  margin-bottom: 14px;
  font-size: clamp(30px, 3.6vw, 44px);
  line-height: 1.12;
  letter-spacing: 0;
}

.price-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 24px 0 14px;
}

.price {
  display: block;
  color: var(--orange);
  font-size: clamp(54px, 7vw, 74px);
  line-height: 0.92;
  font-weight: 900;
}

.price-note {
  color: var(--muted);
  font-weight: 800;
}

.bonus,
.contact-box {
  border-radius: 8px;
  padding: 14px 16px;
  font-weight: 900;
}

.bonus {
  background: rgba(131, 255, 157, 0.12);
  color: var(--green);
  border: 1px solid rgba(131, 255, 157, 0.34);
}

.contact-box {
  margin-top: 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
}

.contact-box span {
  display: block;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 6px;
}

.contact-box strong {
  font-size: clamp(30px, 5vw, 46px);
  letter-spacing: 0;
  color: #fff;
}

.setup {
  display: flex;
  flex-direction: column;
}

.setup-grid {
  display: grid;
  gap: 12px;
  height: 100%;
}

.setup-card {
  border-radius: 8px;
  padding: clamp(20px, 2.4vw, 26px);
}

.card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
}

.tag {
  flex: 0 0 auto;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(62, 232, 255, 0.14);
  color: var(--cyan);
  font-size: 13px;
  font-weight: 900;
}

.setup-card h3 {
  margin: 0;
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.22;
  text-align: right;
}

.setup-card ul {
  margin: 0;
  padding-left: 20px;
}

.setup-card li + li {
  margin-top: 10px;
}

@media (max-width: 880px) {
  .hero {
    min-height: auto;
    padding-bottom: 22px;
  }

  .hero-scrim {
    background:
      linear-gradient(180deg, rgba(2, 5, 10, 0.82) 0%, rgba(3, 8, 16, 0.72) 46%, rgba(2, 5, 10, 0.95) 100%),
      linear-gradient(90deg, rgba(2, 5, 10, 0.72), rgba(2, 5, 10, 0.2));
  }

  .topbar {
    align-items: flex-start;
  }

  .brand {
    max-width: 190px;
  }

  .wechat-link {
    font-size: 13px;
    padding: 9px 11px;
  }

  .hero-content {
    padding-top: 78px;
  }

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

  .hero-panel article {
    min-height: 0;
  }

  .conversion {
    align-items: flex-start;
  }

  .card-head {
    display: block;
  }

  .setup-card h3 {
    margin-top: 12px;
    text-align: left;
  }
}

@media (max-width: 520px) {
  .topbar {
    gap: 10px;
  }

  .brand {
    font-size: 14px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
  }

  h1 {
    font-size: clamp(42px, 14vw, 66px);
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .contact-box strong {
    overflow-wrap: anywhere;
  }
}