:root {
  --bg-1: #0f1222;
  --bg-2: #171b30;
  --panel: rgba(23, 28, 49, 0.72);
  --panel-line: rgba(143, 165, 255, 0.22);
  --text: #f5f7ff;
  --sub: #adb7d6;
  --primary: #6c84ff;
  --primary-2: #7be4ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(850px 500px at 10% -5%, rgba(108, 132, 255, 0.38), transparent 60%),
    radial-gradient(700px 420px at 96% 8%, rgba(123, 228, 255, 0.24), transparent 58%),
    linear-gradient(170deg, var(--bg-1), var(--bg-2) 55%, #0f1326 100%);
}

.container {
  width: min(1380px, 94vw);
  margin: 0 auto;
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(10px);
  background: rgba(10, 13, 28, 0.74);
  border-bottom: 1px solid rgba(140, 164, 255, 0.2);
}

.nav-inner {
  min-height: 68px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: conic-gradient(from 200deg, var(--primary), var(--primary-2), var(--primary));
  box-shadow: 0 0 0 4px rgba(108, 132, 255, 0.2), 0 0 16px rgba(108, 132, 255, 0.45);
}

.brand-text {
  color: #fff;
  font-weight: 800;
  letter-spacing: 0.2px;
  font-size: 20px;
}

.main-nav {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.main-nav-link {
  color: #d3dbf5;
  text-decoration: none;
  border-radius: 12px;
  padding: 8px 12px;
  border: 1px solid transparent;
  font-size: 14px;
}

.main-nav-link:hover {
  color: #fff;
  border-color: rgba(138, 162, 255, 0.4);
  background: rgba(88, 104, 191, 0.22);
}

.main-nav-link.active {
  color: #fff;
  border-color: rgba(123, 228, 255, 0.45);
  background: linear-gradient(120deg, rgba(104, 125, 239, 0.7), rgba(95, 201, 230, 0.6));
}

.site-header {
  padding: 14px 0 14px;
}

.breadcrumb {
  display: inline-flex;
  gap: 8px;
  font-size: 12px;
  color: #8f9bc1;
  margin-bottom: 12px;
}

.breadcrumb a {
  color: #a8b8ff;
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.hero-left,
.hero-right {
  border: 1px solid var(--panel-line);
  border-radius: 20px;
  background: var(--panel);
  backdrop-filter: blur(8px);
  box-shadow: 0 22px 36px rgba(5, 7, 18, 0.34);
}

.hero-left {
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.hero-left::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -40px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(127, 223, 255, 0.35), transparent 66%);
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  border: 1px solid rgba(132, 166, 255, 0.45);
  background: rgba(92, 109, 199, 0.28);
  color: #cfdbff;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
}

.site-header h1 {
  margin: 12px 0 0;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.05;
  letter-spacing: -0.8px;
}

.lead {
  margin: 12px 0 0;
  color: var(--sub);
  max-width: 760px;
  line-height: 1.6;
}

.hero-cta {
  margin-top: 18px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.cta-primary,
.cta-secondary {
  text-decoration: none;
  padding: 10px 16px;
  border-radius: 12px;
  font-size: 14px;
}

.cta-primary {
  color: #fff;
  background: linear-gradient(120deg, #6780ff, #54bfe2);
  box-shadow: 0 10px 22px rgba(95, 119, 248, 0.34);
}

.cta-secondary {
  color: #dbe3ff;
  border: 1px solid rgba(145, 169, 255, 0.36);
  background: rgba(67, 78, 140, 0.26);
}

.hero-metrics {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.metric {
  border-radius: 14px;
  border: 1px solid rgba(139, 163, 255, 0.3);
  background: rgba(35, 42, 76, 0.45);
  padding: 10px 12px;
}

.metric strong {
  display: block;
  color: #ffffff;
  font-size: 15px;
}

.metric span {
  display: block;
  margin-top: 4px;
  color: #b1bce0;
  font-size: 12px;
}

.hero-right {
  padding: 20px;
}

.hero-right h2 {
  margin: 0;
  font-size: 22px;
}

.hero-right p {
  margin: 8px 0 0;
  color: #b6c0df;
}

.hero-right ul {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.hero-right li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  border-radius: 12px;
  border: 1px solid rgba(146, 170, 255, 0.28);
  background: rgba(35, 44, 81, 0.58);
  padding: 10px 12px;
}

.hero-right li strong {
  font-size: 14px;
  color: #f2f5ff;
}

.hero-right li span {
  font-size: 12px;
  color: #a7b3d8;
}

.quick-links {
  list-style: none;
  margin: 14px 0 0;
  padding: 10px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  border: 1px solid rgba(144, 169, 255, 0.28);
  border-radius: 14px;
  background: rgba(22, 29, 57, 0.6);
}

.quick-links a {
  position: relative;
  color: #d9e4ff;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1px;
  border-radius: 999px;
  border: 1px solid rgba(141, 165, 255, 0.42);
  background: linear-gradient(145deg, rgba(61, 76, 138, 0.58), rgba(40, 50, 95, 0.54));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  padding: 8px 14px;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease, color .18s ease;
}

.quick-links a:hover {
  transform: translateY(-1px);
  border-color: rgba(123, 228, 255, 0.62);
  color: #fff;
  box-shadow: 0 8px 14px rgba(16, 26, 62, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.14);
}

.quick-links a.active {
  color: #fff;
  border-color: rgba(123, 228, 255, 0.8);
  background: linear-gradient(120deg, rgba(109, 131, 255, 0.95), rgba(93, 205, 238, 0.9));
  box-shadow: 0 10px 16px rgba(45, 79, 190, 0.4);
}

.seo-intro,
.list-panel,
.faq {
  border: 1px solid var(--panel-line);
  background: var(--panel);
  backdrop-filter: blur(8px);
  border-radius: 18px;
  box-shadow: 0 20px 30px rgba(5, 8, 21, 0.3);
}

.seo-intro {
  margin-top: 16px;
  padding: 16px 18px;
}

.seo-intro h2 {
  margin: 0;
  font-size: 22px;
}

.seo-intro p {
  margin: 8px 0 0;
  color: var(--sub);
}

.list-panel {
  margin-top: 16px;
  padding: 12px 12px 8px;
}

.list-header h2 {
  margin: 0;
  font-size: 24px;
}

.list-header p {
  margin: 6px 0 0;
  color: #9faacf;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 10px 0 14px;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.toolbar-left span {
  color: #9ca8ce;
}

.toolbar-right {
  display: flex;
  gap: 8px;
}

.btn {
  border: 1px solid rgba(143, 165, 255, 0.35);
  background: rgba(49, 60, 112, 0.44);
  color: #dce6ff;
  border-radius: 11px;
  padding: 9px 13px;
  cursor: pointer;
}

.btn:hover {
  background: rgba(86, 103, 177, 0.46);
}

.btn:disabled {
  opacity: .5;
  cursor: not-allowed;
}

.game-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  padding-bottom: 14px;
}

.game-card {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(137, 162, 255, 0.3);
  background: linear-gradient(180deg, rgba(25, 31, 58, 0.96), rgba(20, 26, 49, 0.96));
  min-height: 280px;
  display: flex;
  flex-direction: column;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.game-card:hover {
  transform: translateY(-5px);
  border-color: rgba(123, 228, 255, 0.6);
  box-shadow: 0 18px 26px rgba(10, 13, 32, 0.52);
}

.cover {
  width: 100%;
  height: 154px;
  object-fit: cover;
  display: block;
}

.rank {
  position: absolute;
  top: 10px;
  left: 10px;
  font-size: 11px;
  color: #f6f9ff;
  background: rgba(15, 18, 34, 0.72);
  border: 1px solid rgba(133, 159, 255, 0.45);
  border-radius: 999px;
  padding: 4px 8px;
}

.card-body {
  padding: 13px 13px 12px;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.title {
  margin: 0;
  font-size: 16px;
  line-height: 1.35;
}

.desc {
  margin: 8px 0 0;
  color: #a8b4da;
  font-size: 12px;
  line-height: 1.5;
  min-height: 36px;
}

.meta-row {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.tag {
  font-size: 11px;
  color: #d8e6ff;
  border-radius: 999px;
  border: 1px solid rgba(127, 173, 255, 0.45);
  background: rgba(58, 78, 149, 0.45);
  padding: 4px 9px;
}

.play-link {
  text-decoration: none;
  color: #fff;
  font-size: 12px;
  border-radius: 10px;
  padding: 7px 12px;
  background: linear-gradient(120deg, #5f77f8, #5bc3e4);
  box-shadow: 0 8px 16px rgba(95, 119, 248, 0.32);
}

.faq {
  margin: 16px 0 28px;
  padding: 14px 16px;
}

.faq h2 {
  margin: 0 0 8px;
}

.faq details {
  border-top: 1px dashed rgba(140, 164, 255, 0.28);
  padding: 10px 0;
}

.faq details:first-of-type {
  border-top: none;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
}

.faq p {
  margin: 8px 0 0;
  color: #a8b4d8;
}

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

@media (max-width: 1280px) {
  .hero {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 900px) {
  .main-nav {
    display: none;
  }

  .site-header h1 {
    font-size: 32px;
  }

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

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