:root {
  --bg: #090d1a;
  --bg-soft: #111a2f;
  --card: #121c36;
  --card-2: #172447;
  --text: #e7ecff;
  --muted: #98a8cf;
  --line: rgba(170, 192, 255, 0.2);
  --accent: #66ffd8;
  --accent-2: #8c7bff;
}

* {
  box-sizing: border-box;
}

html,
body {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background:
    radial-gradient(circle at 15% 10%, rgba(102, 255, 216, 0.12), transparent 38%),
    radial-gradient(circle at 85% 0%, rgba(140, 123, 255, 0.16), transparent 34%),
    linear-gradient(180deg, #070b16 0%, #090f1d 40%, #070b14 100%);
}

.site-header .navbar {
  background: rgba(6, 10, 20, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.brand-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #07111e;
  font-size: 0.9rem;
  font-weight: 700;
  box-shadow: 0 8px 18px rgba(102, 255, 216, 0.3);
}

.brand-text {
  font-weight: 700;
  letter-spacing: 0.3px;
}

.navbar-dark .navbar-nav .nav-link {
  color: #c8d4ff;
  padding: 0.5rem 0.85rem;
  border-radius: 0.65rem;
}

.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link.active {
  color: #08101f;
  background: linear-gradient(120deg, var(--accent), #86ffe3);
}

.dropdown-menu-dark {
  background: #0f1a33;
  border: 1px solid var(--line);
}

.mobile-menu-list .list-group-item {
  background: transparent;
  color: #dbe3ff;
  border-color: rgba(255, 255, 255, 0.08);
}

.mobile-menu-list .list-group-item:hover {
  background: #182749;
}

.btn-glow {
  background: linear-gradient(120deg, var(--accent), #79f7ff);
  border: 0;
  color: #05101f;
  font-weight: 600;
}

.btn-glow:hover {
  color: #05101f;
  filter: brightness(0.95);
}

.py-lg-6 {
  padding-top: 4.5rem;
  padding-bottom: 4.5rem;
}

.hero-copy,
.hero-panel,
.zone-panel,
.pulse-panel,
.calendar-card,
.editor-card,
.faq-wrap .accordion-item {
  background: linear-gradient(180deg, rgba(20, 33, 64, 0.95), rgba(12, 23, 46, 0.95));
  border: 1px solid var(--line);
  border-radius: 1rem;
}

.hero-copy {
  padding: 2rem;
}

.live-badge {
  display: inline-block;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  font-size: 0.78rem;
  color: #052220;
  background: linear-gradient(120deg, var(--accent), #b0ffef);
  font-weight: 700;
}

.hero-copy h1 {
  margin-top: 1rem;
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.15;
  margin-bottom: 0.8rem;
}

.hero-copy p {
  color: var(--muted);
  max-width: 58ch;
  margin-bottom: 0;
}

.stat-card {
  background: rgba(102, 255, 216, 0.08);
  border: 1px solid rgba(102, 255, 216, 0.25);
  border-radius: 0.9rem;
  padding: 1rem;
  height: 100%;
}

.stat-card h3 {
  margin: 0;
  color: var(--accent);
  font-weight: 700;
}

.stat-card p {
  margin: 0.2rem 0 0;
  color: #c5d3ff;
  font-size: 0.88rem;
}

.hero-panel {
  padding: 1rem;
}

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

.hero-panel h2 {
  font-size: 1.1rem;
  margin: 0.35rem 0 0.65rem;
}

.quick-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.quick-list li {
  display: grid;
  grid-template-columns: 106px 1fr;
  gap: 0.7rem;
  padding: 0.55rem 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.12);
}

.quick-list li:last-child {
  border-bottom: 0;
}

.quick-list span {
  color: #8ba1d6;
  font-size: 0.82rem;
}

.quick-list strong {
  font-size: 0.92rem;
  font-weight: 600;
}

.section-block {
  padding: 2.8rem 0;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.35rem, 2vw, 2rem);
}

.section-kicker {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.35rem;
  font-size: 0.78rem;
}

.section-tip,
.text-link {
  color: #9eb1de;
  text-decoration: none;
  font-size: 0.9rem;
}

.text-link:hover {
  color: var(--accent);
}

.media-card {
  height: 100%;
  border-radius: 0.9rem;
  overflow: hidden;
  background: linear-gradient(180deg, var(--card), #0f1a31);
  border: 1px solid rgba(167, 188, 242, 0.18);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.media-card:hover {
  transform: translateY(-4px);
  border-color: rgba(102, 255, 216, 0.55);
}

.media-card img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.media-body {
  padding: 0.8rem;
}

.media-body h3 {
  font-size: 0.96rem;
  margin: 0 0 0.45rem;
}

.media-body p {
  color: #9eb1de;
  font-size: 0.82rem;
  line-height: 1.45;
  min-height: 2.4rem;
  margin-bottom: 0.65rem;
}

.meta-row {
  display: flex;
  justify-content: space-between;
  color: #c7d4fa;
  font-size: 0.78rem;
}

.zone-panel,
.pulse-panel {
  padding: 1.4rem;
  height: 100%;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.zone-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(102, 255, 216, 0.32);
  border-radius: 999px;
  color: #cde8ff;
  text-decoration: none;
  padding: 0.42rem 0.85rem;
  font-size: 0.84rem;
  background: rgba(102, 255, 216, 0.08);
}

.zone-tag:hover {
  color: #062223;
  background: var(--accent);
}

.pulse-panel h3,
.calendar-card h3 {
  margin-bottom: 0.8rem;
  font-size: 1.1rem;
}

.pulse-panel ul,
.calendar-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.pulse-panel li,
.calendar-card li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.7rem;
  padding: 0.58rem 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.12);
}

.pulse-panel li:last-child,
.calendar-card li:last-child {
  border-bottom: 0;
}

.pulse-panel span {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
}

.playlist-card {
  overflow: hidden;
  border-radius: 0.95rem;
  background: linear-gradient(180deg, #162747, #0f1b34);
  border: 1px solid var(--line);
  height: 100%;
}

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

.playlist-body {
  padding: 0.95rem;
}

.playlist-body h3 {
  font-size: 1rem;
  margin: 0 0 0.45rem;
}

.playlist-body p {
  margin: 0 0 0.7rem;
  color: #9fb2df;
  font-size: 0.86rem;
}

.playlist-body time {
  font-size: 0.78rem;
  color: #c8d6ff;
}

.ranking-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.ranking-list li {
  display: grid;
  grid-template-columns: 34px 1fr auto;
  gap: 0.8rem;
  align-items: center;
  background: linear-gradient(180deg, #121f3c, #0f1932);
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  padding: 0.8rem;
}

.rank-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  background: linear-gradient(135deg, var(--accent), #a0ffe5);
  color: #09162a;
  font-weight: 700;
}

.ranking-list h3 {
  margin: 0;
  font-size: 0.96rem;
}

.ranking-list p {
  margin: 0.15rem 0 0;
  font-size: 0.79rem;
  color: #9eb1dd;
}

.ranking-list strong {
  color: var(--accent);
  font-size: 1rem;
}

.calendar-card {
  padding: 1.2rem;
  height: 100%;
}

.calendar-card time {
  color: #d7e1ff;
}

.editor-card {
  padding: 1rem;
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 1rem;
  align-items: center;
}

.editor-card img {
  width: 112px;
  height: 112px;
  border-radius: 0.8rem;
  object-fit: cover;
}

.editor-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1rem;
}

.editor-card p {
  margin: 0 0 0.55rem;
  color: #9eb0d9;
  font-size: 0.87rem;
}

.editor-card time {
  color: #bfcdf7;
  font-size: 0.8rem;
}

.faq-wrap .accordion-item {
  margin-bottom: 0.7rem;
  overflow: hidden;
}

.faq-wrap .accordion-button {
  background: transparent;
  color: #e8edff;
  box-shadow: none;
  font-weight: 600;
}

.faq-wrap .accordion-button:not(.collapsed) {
  color: var(--accent);
  background: rgba(102, 255, 216, 0.06);
}

.faq-wrap .accordion-body {
  color: #aebce2;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.friend-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.friend-grid a {
  display: block;
  border: 1px solid rgba(102, 255, 216, 0.28);
  border-radius: 0.75rem;
  background: rgba(102, 255, 216, 0.08);
  padding: 0.75rem 0.9rem;
  color: #d5ecff;
  text-decoration: none;
  font-size: 0.88rem;
}

.friend-grid a:hover {
  background: var(--accent);
  color: #04131f;
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(7, 11, 22, 0.95);
  color: #afbddf;
}

.footer-brand {
  color: #e7edff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
}

.footer-brand:hover {
  color: var(--accent);
}

.modal-dark {
  background: linear-gradient(180deg, #101d39, #0b1428);
  color: #e3ebff;
  border: 1px solid var(--line);
}

.back-top-btn {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 0;
  background: var(--accent);
  color: #04111f;
  font-weight: 700;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.25s ease;
  z-index: 1050;
}

.back-top-btn.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

@media (max-width: 991.98px) {
  .hero-copy {
    padding: 1.4rem;
  }

  .quick-list li {
    grid-template-columns: 96px 1fr;
  }

  .editor-card {
    grid-template-columns: 92px 1fr;
  }

  .editor-card img {
    width: 92px;
    height: 92px;
  }
}

@media (max-width: 575.98px) {
  .section-block {
    padding: 2.15rem 0;
  }

  .hero-copy h1 {
    font-size: 1.75rem;
  }

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