:root {
  --bg: #0b1020;
  --panel: #121933;
  --panel-2: #172142;
  --line: #2b3561;
  --text: #e8eeff;
  --muted: #b5c0ef;
  --brand: #36a3ff;
  --brand-2: #57d0ff;
  --accent: #ffd15c;
  --ok: #53d189;
  --danger: #ff7d7d;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.28);
  --radius: 18px;
  --radius-sm: 12px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(87, 208, 255, 0.16), transparent 25%),
    radial-gradient(circle at top left, rgba(54, 163, 255, 0.12), transparent 30%),
    linear-gradient(180deg, #08101e 0%, #0b1020 100%);
  line-height: 1.75;
}

a {
  color: var(--brand-2);
  text-decoration: none;
}

a:hover {
  color: #ffffff;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(16px);
  background: rgba(8, 12, 26, 0.82);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
}

.brand-logo {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-menu a {
  padding: 10px 14px;
  border-radius: 10px;
  color: var(--muted);
  font-size: 0.96rem;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}

.hero {
  padding: 72px 0 40px;
}

.top-ads-section {
  padding: 18px 0 8px;
}

.top-ads-card {
  padding: 18px 18px 12px;
  background: linear-gradient(180deg, rgba(23, 33, 66, 0.92), rgba(12, 18, 37, 0.96));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.top-ads-title {
  margin: 0 0 10px;
  font-size: 1rem;
  color: #fff;
}

.top-ads-desc {
  margin-bottom: 14px;
  font-size: 0.95rem;
}

.top-ads-grid {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 14px;
  margin: 0;
}

.top-ads-item {
  width: 90px;
  display: flex;
  justify-content: center;
}

.top-ads-figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.top-ads-link {
  display: inline-block;
  border-radius: 18px;
}

.top-ads-link img {
  width: 72px;
  height: 72px;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.22);
  transition: transform 180ms ease, box-shadow 180ms ease;
  background: linear-gradient(135deg, #fff, #eef3ff);
}

.top-ads-link:hover img {
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.28);
}

.top-ads-caption {
  max-width: 90px;
  font-size: 12px;
  line-height: 1.25;
  color: #cad5ff;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 28px;
  align-items: center;
}

.hero-card,
.card,
.feature-card,
.content-card,
.form-card,
.legal-card,
.status-card {
  background: linear-gradient(180deg, rgba(23, 33, 66, 0.9), rgba(12, 18, 37, 0.95));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 34px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  color: #fff;
  background: rgba(83, 209, 137, 0.14);
  border: 1px solid rgba(83, 209, 137, 0.22);
  font-size: 0.9rem;
}

h1,
h2,
h3 {
  line-height: 1.25;
  margin: 0 0 16px;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.35rem);
}

h2 {
  font-size: clamp(1.55rem, 2.5vw, 2.3rem);
}

h3 {
  font-size: 1.2rem;
}

p {
  margin: 0 0 16px;
  color: var(--muted);
}

.lead {
  font-size: 1.05rem;
}

.cta-row,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.button,
button.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  font-weight: 700;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

.button-primary {
  color: #06101f;
  background: linear-gradient(135deg, var(--accent), #ffe69d);
}

.button-secondary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}

.button-ghost {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 26px;
}

.stat {
  padding: 18px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.stat strong {
  display: block;
  color: #fff;
  font-size: 1.45rem;
  margin-bottom: 6px;
}

.hero-media {
  padding: 22px;
}

.hero-media img {
  width: 100%;
  border-radius: 16px;
}

.section {
  padding: 30px 0;
}

.section-header {
  max-width: 860px;
  margin-bottom: 20px;
}

.grid-3,
.grid-4,
.grid-2 {
  display: grid;
  gap: 18px;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-card,
.content-card,
.legal-card,
.status-card,
.form-card {
  padding: 24px;
}

.feature-card ul,
.content-card ul,
.legal-card ul {
  padding-left: 20px;
  margin: 0;
  color: var(--muted);
}

.feature-card li,
.content-card li,
.legal-card li {
  margin-bottom: 8px;
}

.highlight-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.tag {
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  color: #d8e2ff;
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.9rem;
}

.media-strip {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}

.media-strip img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.04);
  padding: 12px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.media-strip.wide {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.category-card {
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, rgba(23, 33, 66, 0.9), rgba(12, 18, 37, 0.95));
  box-shadow: var(--shadow);
}

.category-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.category-card figcaption {
  padding: 14px 16px 16px;
}

.category-card h3 {
  margin-bottom: 6px;
  font-size: 1.05rem;
}

.category-card p {
  margin: 0;
  font-size: 0.92rem;
}

.promo-grid,
.partner-grid,
.screenshot-grid {
  display: grid;
  gap: 16px;
}

.promo-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.partner-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.screenshot-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.image-card {
  overflow: hidden;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
}

.image-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.image-card figcaption {
  padding: 12px 14px 14px;
  color: var(--muted);
  font-size: 0.92rem;
}

.image-card h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  color: #fff;
}

.page-visual {
  margin-top: 18px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.page-visual img {
  width: 100%;
  display: block;
}

.ambassador-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 20px;
  align-items: center;
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, rgba(23, 33, 66, 0.9), rgba(12, 18, 37, 0.95));
}

.ambassador-card img {
  width: 100%;
  border-radius: 14px;
}

.article-flow {
  display: grid;
  gap: 18px;
}

.article-flow .content-card p:last-child,
.article-flow .content-card ul:last-child {
  margin-bottom: 0;
}

.breadcrumb {
  padding: 18px 0 6px;
  color: #98a6d9;
  font-size: 0.94rem;
}

.breadcrumb a {
  color: #cfe0ff;
}

.page-hero {
  padding: 26px 0 18px;
}

.page-hero .content-card {
  padding: 32px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 20px;
}

.form-field {
  margin-bottom: 14px;
}

.form-field label {
  display: block;
  margin-bottom: 8px;
  color: #fff;
  font-weight: 600;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 13px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
  font: inherit;
}

.form-note {
  font-size: 0.92rem;
}

.split-checks {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 12px 0 18px;
}

.split-checks span {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(83, 209, 137, 0.12);
  border: 1px solid rgba(83, 209, 137, 0.2);
  color: #dcffeb;
  font-size: 0.9rem;
}

.faq {
  display: grid;
  gap: 14px;
}

.faq details {
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  padding: 16px 18px;
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
  color: #fff;
}

.faq p {
  margin-top: 12px;
}

.status-wrap {
  min-height: calc(100vh - 220px);
  display: grid;
  place-items: center;
  padding: 50px 0;
}

.status-code {
  font-size: clamp(3rem, 8vw, 5rem);
  color: #fff;
  margin-bottom: 8px;
}

.site-footer {
  padding: 36px 0 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: 18px;
}

.footer-links {
  display: grid;
  gap: 8px;
}

.footer-bottom {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: #94a3d8;
  font-size: 0.92rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 980px) {
  .hero-grid,
  .form-grid,
  .grid-2,
  .grid-3,
  .grid-4,
  .footer-grid,
  .media-strip,
  .media-strip.wide,
  .category-grid,
  .promo-grid,
  .partner-grid,
  .screenshot-grid,
  .ambassador-card {
    grid-template-columns: 1fr;
  }

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

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 16px;
    left: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    background: rgba(9, 14, 30, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    box-shadow: var(--shadow);
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-menu a {
    width: 100%;
  }
}