:root {
  --bg: #f3f6ff;
  --surface: #ffffff;
  --ink: #0f172a;
  --muted: #667085;
  --line: #e4e9f5;
  --primary: #5b64ff;
  --secondary: #16c3a6;
  --accent: #ff8f66;
  --dark: #0b1020;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 10% 0%, #e8ecff 0%, var(--bg) 45%, #f7f9ff 100%);
  line-height: 1.6;
}

a {
  text-decoration: none;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1050;
}

.top-strip {
  background: #070b18;
  color: #b6c0e3;
  font-size: 0.8rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-strip .container-xxl {
  min-height: 36px;
}

.top-tags {
  display: flex;
  gap: 0.5rem;
}

.top-tags span {
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  background: rgba(91, 100, 255, 0.2);
  color: #dde3ff;
}

.nav-main {
  background: rgba(11, 16, 32, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled .nav-main {
  background: rgba(8, 12, 24, 0.95);
  box-shadow: 0 10px 30px rgba(3, 7, 20, 0.35);
}

.navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: #ffffff;
  font-weight: 700;
}

.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #0b1020;
  font-weight: 800;
  background: linear-gradient(135deg, var(--secondary), #8be8d8);
  box-shadow: 0 8px 18px rgba(22, 195, 166, 0.35);
}

.logo-text {
  letter-spacing: 0.02em;
  color: #f5f8ff;
}

.navbar-nav .nav-link {
  color: #d9e2ff;
  font-size: 0.95rem;
  padding-left: 0.95rem;
  padding-right: 0.95rem;
}

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

.dropdown-menu {
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 18px 30px rgba(0, 0, 0, 0.35);
}

.btn-accent {
  border: none;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #ff6f91);
  box-shadow: 0 10px 22px rgba(255, 111, 145, 0.35);
}

.btn-accent:hover {
  color: #fff;
  filter: brightness(1.04);
}

.navbar-toggler {
  border-color: rgba(224, 232, 255, 0.45);
}

.navbar-toggler:focus {
  box-shadow: none;
}

.navbar-toggler-icon {
  filter: invert(1) brightness(1.8);
}

.offcanvas {
  background: #0d1428;
  color: #e8edff;
}

.offcanvas .nav-link {
  color: #d9e2ff;
  padding: 0.65rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

main {
  padding-top: 94px;
}

.hero-section {
  padding: 1.4rem 0 1.8rem;
}

.hero-media {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  min-height: 540px;
  box-shadow: 0 25px 45px rgba(13, 22, 46, 0.3);
}

.hero-media img {
  width: 100%;
  height: 540px;
  object-fit: cover;
  display: block;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(95deg, rgba(6, 12, 25, 0.84) 0%, rgba(10, 20, 42, 0.65) 42%, rgba(10, 20, 42, 0.15) 100%);
}

.hero-content {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 2.25rem;
  color: #f4f7ff;
  max-width: 700px;
}

.hero-kicker {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: rgba(22, 195, 166, 0.22);
  border: 1px solid rgba(163, 243, 229, 0.4);
  margin-bottom: 0.85rem;
}

.hero-content h1 {
  margin: 0 0 0.7rem;
  font-size: clamp(1.65rem, 3.6vw, 2.7rem);
  line-height: 1.2;
  font-weight: 700;
}

.hero-content p {
  margin: 0;
  color: #d8def6;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.2rem;
}

.hero-stats {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(221, 231, 255, 0.26);
  border-radius: 999px;
  color: #edf2ff;
  background: rgba(255, 255, 255, 0.08);
  padding: 0.3rem 0.72rem;
  font-size: 0.82rem;
}

.quick-categories {
  padding: 0.8rem 0 0.4rem;
}

.quick-item {
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1rem 0.9rem;
  height: 100%;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.quick-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 26px rgba(13, 23, 45, 0.12);
}

.quick-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, #eff2ff, #dbe3ff);
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 0.45rem;
}

.quick-item h3 {
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.quick-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.content-section {
  padding: 3.4rem 0;
}

.section-soft {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.45), rgba(237, 242, 255, 0.5));
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 0.8rem;
  margin-bottom: 1.25rem;
}

.section-head h2 {
  margin: 0;
  font-size: 1.55rem;
  font-weight: 700;
}

.section-head p {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.more-link {
  font-size: 0.9rem;
  color: var(--primary);
  font-weight: 600;
}

.media-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.media-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 28px rgba(12, 20, 41, 0.15);
}

.poster-wrap {
  position: relative;
}

.poster-wrap img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  display: block;
}

.badge-rating,
.badge-date {
  position: absolute;
  top: 0.55rem;
  font-size: 0.72rem;
  border-radius: 999px;
  padding: 0.14rem 0.44rem;
  color: #fff;
}

.badge-rating {
  left: 0.55rem;
  background: rgba(9, 14, 28, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.23);
}

.badge-date {
  right: 0.55rem;
  background: rgba(91, 100, 255, 0.75);
}

.media-body {
  padding: 0.72rem 0.74rem 0.82rem;
}

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

.media-body p {
  margin: 0.2rem 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.join-section {
  padding: 1.3rem 0 3.4rem;
}

.join-panel {
  border-radius: 22px;
  overflow: hidden;
  background: linear-gradient(120deg, #18233f 0%, #143053 48%, #105e65 100%);
  color: #edf3ff;
  padding: 2rem;
  box-shadow: 0 24px 38px rgba(9, 20, 42, 0.28);
}

.panel-kicker {
  display: inline-block;
  font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  padding: 0.2rem 0.62rem;
}

.join-panel h2 {
  margin: 0.65rem 0 0.6rem;
  font-size: clamp(1.45rem, 2.7vw, 2.1rem);
}

.join-panel p {
  margin-bottom: 0.9rem;
  color: #d8e2ff;
}

.cta-points {
  margin: 0 0 1rem;
  padding-left: 1rem;
}

.cta-points li {
  margin-bottom: 0.32rem;
}

.join-image {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 15px 30px rgba(4, 8, 20, 0.3);
}

.faq-section {
  padding: 0 0 3.2rem;
}

.accordion-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 0.7rem;
}

.accordion-button {
  font-weight: 600;
}

.accordion-button:not(.collapsed) {
  background: #eef2ff;
  color: #28367c;
}

.friend-links-section {
  padding: 0 0 3.2rem;
}

.friend-links-section h2 {
  font-size: 1.4rem;
  margin-bottom: 0.9rem;
}

.friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.friend-links a {
  border: 1px solid var(--line);
  background: #fff;
  color: #2a3558;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  font-size: 0.9rem;
  transition: all 0.25s ease;
}

.friend-links a:hover {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
}

.site-footer {
  background: #090e1c;
  color: #a7b3d5;
  padding: 3rem 0 1rem;
}

.footer-brand {
  color: #ffffff;
  display: inline-block;
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.footer-title {
  font-size: 1rem;
  color: #e1e8ff;
  margin-bottom: 0.6rem;
}

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

.footer-links li {
  margin-bottom: 0.38rem;
}

.footer-links a {
  color: #a7b3d5;
}

.footer-links a:hover,
.site-footer a:hover {
  color: #ffffff;
}

.footer-bottom {
  margin-top: 1.35rem;
  padding-top: 0.95rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  margin: 0;
  font-size: 0.88rem;
}

.footer-bottom a {
  color: #d9e2ff;
}

.back-to-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 1.15rem;
  box-shadow: 0 12px 20px rgba(25, 33, 86, 0.28);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: all 0.25s ease;
  z-index: 1040;
}

.back-to-top.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.modal-content {
  border: 1px solid var(--line);
  border-radius: 16px;
}

@media (min-width: 992px) {
  main {
    padding-top: 130px;
  }
}

@media (max-width: 991.98px) {
  .hero-media,
  .hero-media img {
    height: 500px;
    min-height: 500px;
  }

  .hero-content {
    padding: 1.5rem;
  }

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

@media (max-width: 575.98px) {
  .hero-media,
  .hero-media img {
    height: 430px;
    min-height: 430px;
  }

  .hero-content h1 {
    font-size: 1.5rem;
  }

  .content-section {
    padding: 2.6rem 0;
  }

  .join-panel {
    padding: 1.35rem;
  }
}