:root {
  --bg: #070b11;
  --bg-elevated: #0e1520;
  --panel: rgba(15, 23, 34, 0.88);
  --panel-solid: #121a24;
  --text: #eef4ff;
  --muted: #8da1bb;
  --line: rgba(110, 157, 215, 0.18);
  --cyan: #19d1ff;
  --cyan-strong: #59e3ff;
  --gold: #f6c94a;
  --danger: #ff7a7a;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top, rgba(25, 209, 255, 0.12), transparent 38%),
    linear-gradient(180deg, #071019 0%, #070b11 45%, #05070b 100%);
  min-height: 100vh;
}

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

img {
  max-width: 100%;
  display: block;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: rgba(4, 8, 14, 0.82);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--cyan-strong);
}

.brand small {
  color: var(--text);
  font-size: 14px;
  margin-left: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  color: var(--muted);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--cyan-strong);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 144px;
  padding: 12px 18px;
  border: 0;
  cursor: pointer;
  color: #04111a;
  font-weight: 800;
  background: linear-gradient(135deg, var(--cyan), #b8f3ff);
  box-shadow: 0 0 24px rgba(25, 209, 255, 0.28);
}

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 24px 80px;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: stretch;
  padding-top: 28px;
}

.hero-copy {
  padding: 48px;
  background:
    linear-gradient(180deg, rgba(18, 34, 48, 0.96), rgba(8, 13, 22, 0.96)),
    radial-gradient(circle at top right, rgba(25, 209, 255, 0.18), transparent 35%);
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}

.eyebrow {
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.32em;
  font-size: 12px;
  font-weight: 700;
}

.hero h1,
.section-head h2,
.page-banner h1 {
  margin: 16px 0;
  font-family: Georgia, "Times New Roman", serif;
  line-height: 0.96;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(56px, 11vw, 108px);
}

.hero h1 span {
  color: var(--cyan);
}

.hero p,
.section-head p,
.lead {
  color: var(--muted);
  line-height: 1.8;
  font-size: 16px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: 1px solid transparent;
}

.button.primary {
  color: #03131c;
  background: linear-gradient(135deg, var(--cyan), #d4fbff);
}

.button.secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.08);
}

.hero-card {
  position: relative;
  min-height: 540px;
  overflow: hidden;
  background: #081018;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}

.hero-card::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 35%;
  background: linear-gradient(180deg, transparent, rgba(4, 8, 14, 0.92));
}

.hero-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-badge {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 24px;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.hero-badge div {
  padding: 12px 14px;
  background: rgba(10, 16, 24, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.hero-badge strong {
  display: block;
  color: var(--cyan-strong);
  font-size: 20px;
}

.stats,
.card-grid,
.download-grid,
.info-grid,
.footer-grid {
  display: grid;
  gap: 18px;
}

.stats {
  grid-template-columns: repeat(4, 1fr);
  margin-top: 18px;
}

.stat,
.panel,
.news-card,
.rank-card,
.download-card,
.info-card {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.stat {
  padding: 20px;
}

.stat strong {
  display: block;
  color: var(--cyan-strong);
  font-size: 26px;
  margin-bottom: 8px;
}

.section {
  margin-top: 62px;
}

.section-head {
  margin-bottom: 20px;
}

.section-head h2 {
  font-size: clamp(34px, 6vw, 52px);
  margin-bottom: 10px;
}

.card-grid {
  grid-template-columns: 1.5fr 0.9fr;
}

.news-stack {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.news-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.news-card .body,
.rank-card,
.download-card,
.info-card,
.panel {
  padding: 20px;
}

.tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.news-card h3,
.rank-card h3,
.download-card h3,
.info-card h3,
.panel h3 {
  margin: 12px 0 8px;
  font-size: 24px;
}

.rank-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.rank-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.03);
}

.rank-no {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  background: rgba(25, 209, 255, 0.15);
  color: var(--cyan-strong);
}

.rank-meta {
  margin-left: auto;
  color: var(--muted);
  font-size: 13px;
}

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

.download-card ul,
.info-card ul {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}

.cta-band {
  margin-top: 62px;
  padding: 30px;
  background:
    linear-gradient(90deg, rgba(12, 18, 28, 0.95), rgba(9, 26, 36, 0.95)),
    radial-gradient(circle at right, rgba(25, 209, 255, 0.16), transparent 45%);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.cta-band h2 {
  margin: 0 0 10px;
  font-size: clamp(30px, 5vw, 48px);
}

.site-footer {
  margin-top: 80px;
  padding: 28px 24px 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--muted);
}

.footer-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.page-banner {
  margin-top: 24px;
  padding: 36px 32px;
  background:
    linear-gradient(180deg, rgba(12, 18, 28, 0.96), rgba(9, 14, 22, 0.98)),
    radial-gradient(circle at right, rgba(25, 209, 255, 0.18), transparent 35%);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.page-banner h1 {
  font-size: clamp(42px, 7vw, 78px);
}

.two-column {
  margin-top: 24px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 22px;
}

.preview-image {
  overflow: hidden;
  min-height: 420px;
  background: var(--panel-solid);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.preview-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.field,
.agreement,
.feature-note {
  margin-top: 16px;
}

.field label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 14px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(0, 0, 0, 0.24);
  color: var(--text);
}

.field textarea {
  min-height: 120px;
  resize: vertical;
}

.agreement,
.feature-note,
.placeholder-table {
  padding: 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--muted);
}

.placeholder-table table {
  width: 100%;
  border-collapse: collapse;
}

.placeholder-table th,
.placeholder-table td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.muted {
  color: var(--muted);
}

@media (max-width: 980px) {
  .hero,
  .card-grid,
  .two-column,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .stats,
  .download-grid,
  .hero-badge {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .page,
  .nav,
  .site-footer {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-copy,
  .page-banner {
    padding: 28px 22px;
  }

  .stats,
  .download-grid,
  .hero-badge,
  .form-grid,
  .news-stack {
    grid-template-columns: 1fr;
  }

  .hero-card {
    min-height: 420px;
  }
}