:root {
  --bg-dark: #080f25;
  --bg-dark-2: #101a3a;
  --surface: #ffffff;
  --surface-soft: #f3f6ff;
  --text: #101b3a;
  --muted: #68779d;
  --accent: #31e3c4;
  --accent-2: #7f7bff;
  --line: #e3e9ff;
  --shadow: 0 12px 30px rgba(15, 28, 62, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f7f9ff 0%, #f2f5ff 100%);
  line-height: 1.65;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1030;
  transition: all 0.3s ease;
}

.site-header .navbar {
  padding: 0.9rem 0;
  background: rgba(7, 12, 29, 0.45);
  backdrop-filter: blur(8px);
  transition: all 0.3s ease;
}

.site-header.scrolled .navbar {
  background: rgba(7, 12, 29, 0.92);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.24);
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  position: relative;
  display: inline-flex;
  flex-shrink: 0;
}

.brand-mark::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-40%, -50%);
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 10px solid #fff;
}

.brand-text {
  margin-left: 0.6rem;
  font-weight: 700;
  font-size: 1.08rem;
  letter-spacing: 0.3px;
}

.navbar .nav-link {
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.95rem;
  padding: 0.5rem 0.8rem;
}

.navbar .nav-link:hover,
.navbar .nav-link:focus,
.navbar .nav-link.active {
  color: #ffffff;
}

.dropdown-menu {
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.btn-glow {
  color: #05111f;
  font-weight: 700;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 10px 28px rgba(49, 227, 196, 0.28);
}

.btn-glow:hover {
  color: #05111f;
  transform: translateY(-1px);
}

.mobile-nav-list .list-group-item {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.9);
}

.mobile-nav-list .list-group-item:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.hero-section {
  min-height: 78vh;
  display: flex;
  align-items: center;
  padding: 140px 0 90px;
  color: #fff;
  background-image: linear-gradient(120deg, rgba(8, 14, 34, 0.86), rgba(22, 35, 78, 0.58)), url('../images/184096103.jpg');
  background-size: cover;
  background-position: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  border-radius: 999px;
  padding: 0.36rem 0.9rem;
  font-size: 0.82rem;
  letter-spacing: 0.2px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.hero-content h1 {
  margin: 1rem 0 1rem;
  font-size: clamp(2rem, 4vw, 3.6rem);
  font-weight: 800;
  line-height: 1.18;
}

.hero-content p {
  color: rgba(240, 246, 255, 0.9);
  max-width: 700px;
  margin: 0 auto;
}

.hero-tags {
  margin-top: 1.25rem;
}

.hero-tags span {
  font-size: 0.82rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  padding: 0.3rem 0.75rem;
  color: rgba(255, 255, 255, 0.9);
}

.hero-actions {
  margin-top: 1.9rem;
}

.section-block {
  padding: 82px 0;
}

.section-muted {
  background: linear-gradient(180deg, #fcfdff 0%, #f4f7ff 100%);
}

.section-heading {
  max-width: 680px;
  margin: 0 auto 2.1rem;
}

.section-title {
  margin: 0;
  font-size: clamp(1.5rem, 2.2vw, 2.1rem);
  font-weight: 800;
}

.section-subtitle {
  margin: 0.7rem 0 0;
  color: var(--muted);
}

.media-card {
  background: var(--surface);
  border-radius: 18px;
  padding: 10px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.media-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 36px rgba(11, 29, 74, 0.14);
}

.poster-wrap {
  position: relative;
}

.poster-wrap img {
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  border-radius: 14px;
}

.score-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 999px;
  background: linear-gradient(135deg, #ffd66b, #ff9f45);
  color: #2f1a05;
  padding: 0.18rem 0.5rem;
}

.card-content {
  padding: 0.85rem 0.25rem 0.3rem;
}

.card-content h3 {
  font-size: 1rem;
  margin: 0;
  font-weight: 700;
}

.card-content p {
  margin: 0.32rem 0 0;
  font-size: 0.84rem;
  color: var(--muted);
}

.media-card-lg .card-content h3 {
  font-size: 1.1rem;
}

.btn-outline-accent {
  color: #153267;
  border: 1px solid #bfd8ff;
  background: #fff;
}

.btn-outline-accent:hover {
  color: #082146;
  background: #edf4ff;
  border-color: #a7c8fb;
}

.guide-accordion {
  max-width: 840px;
  margin: 0 auto;
}

.guide-accordion .accordion-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 0.9rem;
  background: #fff;
}

.guide-accordion .accordion-button {
  font-weight: 700;
  color: #172955;
}

.guide-accordion .accordion-button:not(.collapsed) {
  color: #132753;
  background: #edf2ff;
  box-shadow: none;
}

.guide-accordion .accordion-button:focus {
  box-shadow: none;
}

.join-section {
  padding: 86px 0;
  color: #fff;
  background-image: linear-gradient(120deg, rgba(17, 26, 55, 0.86), rgba(33, 21, 63, 0.82)), url('../images/73685.jpg');
  background-size: cover;
  background-position: center;
}

.metric-box {
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.08);
}

.metric-box strong {
  display: block;
  font-size: clamp(1.5rem, 2vw, 2.2rem);
  font-weight: 800;
}

.metric-box span {
  color: rgba(235, 241, 255, 0.9);
  font-size: 0.9rem;
}

.join-content {
  max-width: 780px;
  margin: 0 auto;
}

.join-content h2 {
  font-size: clamp(1.65rem, 2.4vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 0.9rem;
}

.join-content p {
  color: rgba(240, 246, 255, 0.92);
  margin-bottom: 1.4rem;
}

.friend-links-section {
  background: #ffffff;
}

.friend-link {
  display: block;
  text-align: center;
  border: 1px solid var(--line);
  color: #1d2f5f;
  background: #f7faff;
  border-radius: 999px;
  padding: 0.62rem 0.9rem;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.friend-link:hover {
  border-color: #afd2ff;
  color: #0c244f;
  background: #ecf4ff;
  transform: translateY(-2px);
}

.site-footer {
  background: #0b1228;
  color: #aeb9da;
  padding: 68px 0 22px;
}

.site-footer .footer-brand {
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
}

.footer-desc {
  color: #94a4ce;
  max-width: 340px;
}

.site-footer h3 {
  margin-bottom: 0.9rem;
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
}

.footer-links,
.footer-contact {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links li,
.footer-contact li {
  margin-bottom: 0.45rem;
  font-size: 0.9rem;
}

.footer-links a:hover,
.footer-site:hover,
.footer-brand:hover {
  color: var(--accent);
}

.social-list {
  display: flex;
  gap: 0.55rem;
}

.social-list a {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 0.82rem;
}

.footer-bottom {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.85rem;
}

.trailer-placeholder {
  min-height: 280px;
  border-radius: 14px;
  border: 1px solid #e4e9f9;
  background: linear-gradient(135deg, #eff3ff, #f6f8ff);
  color: #44537d;
}

.reveal-up {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 991.98px) {
  .hero-section {
    min-height: 70vh;
    padding: 120px 0 70px;
  }

  .section-block {
    padding: 68px 0;
  }
}

@media (max-width: 575.98px) {
  .hero-content h1 {
    font-size: 1.9rem;
  }

  .hero-content p {
    font-size: 0.95rem;
  }

  .card-content h3 {
    font-size: 0.95rem;
  }

  .card-content p {
    font-size: 0.8rem;
  }

  .metric-box strong {
    font-size: 1.35rem;
  }
}