:root {
  --bg: #0b1220;
  --bg-soft: #121b2e;
  --panel: rgba(18, 28, 48, 0.82);
  --text: #eef4ff;
  --muted: #9db0cc;
  --brand: #3ec8ff;
  --brand-2: #7ef0c8;
  --accent: #ff7eb6;
  --line: rgba(255, 255, 255, 0.08);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  --radius: 18px;
  --font-display: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(62, 200, 255, 0.22), transparent 60%),
    radial-gradient(900px 500px at 90% 0%, rgba(126, 240, 200, 0.16), transparent 55%),
    radial-gradient(700px 500px at 50% 100%, rgba(255, 126, 182, 0.1), transparent 50%),
    linear-gradient(180deg, #07101d 0%, #0b1220 40%, #0a1526 100%);
  min-height: 100vh;
  line-height: 1.7;
}

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

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(8, 14, 26, 0.72);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background:
    radial-gradient(circle at 30% 30%, #fff 0 12%, transparent 13%),
    linear-gradient(135deg, var(--brand), var(--brand-2));
  box-shadow: 0 8px 20px rgba(62, 200, 255, 0.35);
}

.nav-links {
  display: flex;
  gap: 22px;
  list-style: none;
  color: var(--muted);
  font-size: 15px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  cursor: pointer;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--brand), #5ad6ff 45%, var(--brand-2));
  color: #041018;
  box-shadow: 0 12px 30px rgba(62, 200, 255, 0.28);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--line);
  color: var(--text);
}

.hero {
  padding: 72px 0 48px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-kicker {
  display: inline-block;
  color: var(--brand-2);
  font-size: 14px;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.15;
  margin-bottom: 18px;
  font-weight: 800;
}

.hero h1 span {
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  color: var(--muted);
  font-size: 17px;
  max-width: 520px;
  margin-bottom: 28px;
}

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

.player-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 24px;
  box-shadow: var(--shadow);
  animation: floatIn 0.8s ease both;
}

.player-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 18px;
}

.cover {
  aspect-ratio: 1;
  border-radius: 20px;
  background:
    radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.35), transparent 28%),
    linear-gradient(160deg, #1d4f6f, #12324a 40%, #2a1840);
  display: grid;
  place-items: center;
  font-size: 64px;
  margin-bottom: 18px;
  position: relative;
  overflow: hidden;
}

.cover::after {
  content: "";
  position: absolute;
  inset: auto -20% -30% auto;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(126, 240, 200, 0.35), transparent 70%);
  animation: pulse 4s ease-in-out infinite;
}

.track-title {
  font-size: 22px;
  font-weight: 700;
}

.track-meta {
  color: var(--muted);
  margin: 6px 0 16px;
}

.progress {
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 8px;
}

.progress > span {
  display: block;
  width: 38%;
  height: 100%;
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
  animation: progressMove 8s linear infinite;
}

.time-row,
.controls,
.tags {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.time-row {
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 16px;
}

.controls {
  gap: 14px;
  margin-bottom: 16px;
}

.ctl {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
}

.ctl.play {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #041018;
  border: none;
}

.tags {
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.tag {
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
}

.section {
  padding: 56px 0;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 16px;
  margin-bottom: 28px;
}

.section-head h2 {
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.25;
}

.section-head p,
.muted {
  color: var(--muted);
}

.feature-grid,
.scene-grid,
.news-grid,
.download-grid {
  display: grid;
  gap: 18px;
}

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

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

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

.feature,
.scene,
.news-card,
.download-card,
.content-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.feature:hover,
.scene:hover,
.news-card:hover,
.download-card:hover {
  transform: translateY(-4px);
  border-color: rgba(62, 200, 255, 0.35);
  background: rgba(62, 200, 255, 0.05);
}

.feature-icon,
.scene-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  background: rgba(62, 200, 255, 0.12);
  font-size: 20px;
}

.feature h3,
.scene h3,
.news-card h3,
.download-card h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

.feature p,
.scene p,
.news-card p,
.download-card p,
.article-body p {
  color: var(--muted);
  font-size: 14px;
}

.chip {
  display: inline-block;
  margin-top: 12px;
  font-size: 12px;
  color: var(--brand-2);
}

.song-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.song {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
}

.song-cover {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #2a6284, #1a3b55);
  flex-shrink: 0;
}

.song strong {
  display: block;
  font-size: 15px;
}

.song span {
  color: var(--muted);
  font-size: 13px;
}

.page-hero {
  padding: 56px 0 24px;
}

.page-hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  margin-bottom: 12px;
}

.breadcrumb {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 18px;
}

.breadcrumb a:hover {
  color: var(--brand);
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 28px;
  padding-bottom: 64px;
}

.article-body {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 32px;
}

.article-body h2 {
  margin: 28px 0 12px;
  font-size: 22px;
}

.article-body h2:first-child {
  margin-top: 0;
}

.article-body ul {
  margin: 12px 0 18px 1.2em;
  color: var(--muted);
}

.article-meta {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.side-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px;
  position: sticky;
  top: 90px;
}

.side-box h3 {
  margin-bottom: 14px;
  font-size: 16px;
}

.side-box a {
  display: block;
  color: var(--muted);
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.side-box a:last-child {
  border-bottom: none;
}

.side-box a:hover {
  color: var(--brand);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 36px 0 48px;
  color: var(--muted);
  font-size: 14px;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

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

.footer-links a:hover {
  color: var(--text);
}

.daily-banner {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(126, 240, 200, 0.08);
  border: 1px solid rgba(126, 240, 200, 0.18);
  color: var(--brand-2);
  font-size: 14px;
}

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.55;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.08);
  }
}

@keyframes progressMove {
  0% {
    width: 18%;
  }
  50% {
    width: 72%;
  }
  100% {
    width: 38%;
  }
}

@media (max-width: 960px) {
  .hero,
  .article-layout,
  .feature-grid,
  .scene-grid,
  .news-grid,
  .song-list,
  .download-grid {
    grid-template-columns: 1fr;
  }

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

  .nav-links {
    display: none;
  }

  .hero {
    padding-top: 40px;
  }
}

@media (max-width: 640px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions,
  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }
}