:root {
  --bg: #090d1d;
  --bg-deep: #0d1328;
  --surface: #131d3a;
  --surface-soft: #172447;
  --line: rgba(157, 183, 255, 0.18);
  --text: #edf3ff;
  --muted: #9fb0d3;
  --accent: #4dd7b0;
  --accent-2: #ffd166;
  --brand: #77a8ff;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html,
body {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(180deg, #070b17 0%, #0a1022 40%, #0a0f1f 100%);
  line-height: 1.65;
  overflow-x: hidden;
}

body::before,
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -2;
}

body::before {
  background:
    radial-gradient(600px 380px at 8% 8%, rgba(119, 168, 255, 0.22), transparent 65%),
    radial-gradient(500px 320px at 92% 20%, rgba(77, 215, 176, 0.16), transparent 68%),
    radial-gradient(700px 420px at 50% 100%, rgba(125, 88, 255, 0.14), transparent 70%);
}

body::after {
  z-index: -1;
  opacity: 0.22;
  background-image:
    radial-gradient(circle at 10% 20%, #ffffff 1px, transparent 1px),
    radial-gradient(circle at 70% 35%, #ffffff 1px, transparent 1px),
    radial-gradient(circle at 40% 75%, #ffffff 1px, transparent 1px);
  background-size: 210px 210px, 180px 180px, 240px 240px;
}

a {
  text-decoration: none;
}

.site-header {
  background: rgba(8, 12, 30, 0.78);
  border-bottom: 1px solid rgba(157, 183, 255, 0.14);
  backdrop-filter: blur(10px);
}

.navbar {
  padding: 0.85rem 0;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.brand-link:hover {
  color: #fff;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: #04162a;
  background: linear-gradient(135deg, var(--accent), var(--brand));
  box-shadow: 0 8px 22px rgba(77, 215, 176, 0.38);
}

.nav-link,
.dropdown-toggle {
  color: var(--muted) !important;
  font-size: 0.95rem;
  border-radius: 999px;
  padding: 0.45rem 0.9rem !important;
  transition: all 0.25s ease;
}

.nav-link:hover,
.nav-link.active,
.dropdown-toggle:hover,
.dropdown-toggle.show {
  color: #fff !important;
  background: rgba(77, 215, 176, 0.14);
}

.dropdown-menu {
  border: 1px solid var(--line);
  background: #101934;
  border-radius: 12px;
}

.dropdown-item {
  color: #dbe7ff;
}

.dropdown-item:hover {
  color: #fff;
  background: rgba(119, 168, 255, 0.2);
}

.btn-cta {
  border: 0;
  color: #031425;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 10px 24px rgba(77, 215, 176, 0.28);
}

.btn-cta:hover {
  color: #031425;
  transform: translateY(-1px);
  box-shadow: 0 14px 26px rgba(77, 215, 176, 0.38);
}

.btn-ghost {
  color: #d9e6ff;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.btn-ghost:hover {
  color: #fff;
  border-color: rgba(119, 168, 255, 0.45);
  background: rgba(119, 168, 255, 0.14);
}

.offcanvas {
  background: #0e1731;
  border-left: 1px solid var(--line);
}

.offcanvas .nav-link {
  border-radius: 10px;
}

.hero-section {
  padding: 8.1rem 0 4.8rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: #d2deff;
  font-size: 0.82rem;
  padding: 0.42rem 0.72rem;
  border-radius: 999px;
  border: 1px solid rgba(119, 168, 255, 0.38);
  background: rgba(119, 168, 255, 0.1);
}

.hero-title {
  margin: 1rem 0 0.9rem;
  font-size: clamp(2rem, 4.2vw, 3.5rem);
  line-height: 1.18;
  font-weight: 800;
}

.accent-text {
  color: var(--accent-2);
}

.hero-desc {
  max-width: 580px;
  color: var(--muted);
  margin-bottom: 1.15rem;
}

.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 1.3rem;
}

.pill-item {
  font-size: 0.84rem;
  color: #dce7ff;
  border: 1px solid rgba(157, 183, 255, 0.2);
  background: rgba(19, 29, 58, 0.75);
  border-radius: 999px;
  padding: 0.4rem 0.72rem;
}

.hero-window {
  background: linear-gradient(170deg, rgba(24, 37, 73, 0.95), rgba(15, 25, 52, 0.95));
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 1rem;
  box-shadow: var(--shadow);
}

.window-toolbar {
  display: flex;
  gap: 0.38rem;
  margin-bottom: 0.8rem;
}

.window-toolbar span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #7089bd;
}

.window-toolbar span:first-child {
  background: #ff7171;
}

.window-toolbar span:nth-child(2) {
  background: #ffd166;
}

.window-toolbar span:last-child {
  background: #4dd7b0;
}

.hero-preview {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(157, 183, 255, 0.22);
}

.hero-preview img {
  width: 100%;
  height: 265px;
  object-fit: cover;
  display: block;
}

.metric-grid {
  margin-top: 0.8rem;
  display: grid;
  gap: 0.7rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.metric-box {
  border-radius: 12px;
  border: 1px solid rgba(157, 183, 255, 0.2);
  background: rgba(255, 255, 255, 0.03);
  padding: 0.72rem;
}

.metric-box span {
  color: var(--muted);
  display: block;
  font-size: 0.72rem;
}

.metric-box strong {
  font-size: 0.98rem;
  color: #fff;
}

.section-block {
  padding: 4.6rem 0;
}

.alt-surface {
  background: linear-gradient(180deg, rgba(15, 24, 49, 0.9), rgba(11, 19, 39, 0.95));
  border-top: 1px solid rgba(157, 183, 255, 0.08);
  border-bottom: 1px solid rgba(157, 183, 255, 0.08);
}

.section-head {
  text-align: center;
  margin-bottom: 2.2rem;
}

.section-head h2 {
  font-size: clamp(1.5rem, 2.7vw, 2.15rem);
  margin-bottom: 0.65rem;
  font-weight: 800;
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.feature-card {
  height: 100%;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(22, 34, 67, 0.9), rgba(18, 29, 58, 0.9));
  border: 1px solid var(--line);
  padding: 1.35rem;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(77, 215, 176, 0.45);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(77, 215, 176, 0.14);
  border: 1px solid rgba(77, 215, 176, 0.45);
  color: var(--accent);
  display: grid;
  place-items: center;
  margin-bottom: 0.9rem;
  font-size: 1.15rem;
}

.feature-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.45rem;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
}

.media-card {
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(23, 36, 71, 0.92), rgba(17, 28, 56, 0.92));
  transition: transform 0.28s ease, border-color 0.28s ease;
}

.media-card:hover {
  transform: translateY(-4px);
  border-color: rgba(119, 168, 255, 0.5);
}

.thumb-wrap {
  position: relative;
  overflow: hidden;
}

.thumb-wrap img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  transition: transform 0.45s ease;
}

.media-card:hover .thumb-wrap img {
  transform: scale(1.08);
}

.quality-badge {
  position: absolute;
  left: 10px;
  top: 10px;
  font-size: 0.72rem;
  background: rgba(6, 15, 31, 0.72);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  padding: 0.16rem 0.55rem;
}

.play-btn {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(3, 9, 23, 0.56);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 1.45rem;
}

.media-body {
  padding: 1rem 1rem 1.05rem;
}

.media-body h3 {
  margin: 0 0 0.35rem;
  font-size: 1.08rem;
}

.media-body p {
  color: var(--muted);
  font-size: 0.9rem;
  min-height: 2.8rem;
  margin-bottom: 0.8rem;
}

.media-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.score {
  color: #ffe28d;
  font-weight: 700;
  font-size: 0.9rem;
}

.score i {
  margin-right: 0.25rem;
}

.tag-row .badge {
  font-weight: 500;
  background: rgba(119, 168, 255, 0.16);
  border: 1px solid rgba(119, 168, 255, 0.35);
  color: #dbe8ff;
  margin-left: 0.35rem;
}

.news-card {
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(18, 29, 58, 0.88);
  padding: 1.2rem;
  transition: transform 0.24s ease;
}

.news-card:hover {
  transform: translateY(-3px);
}

.news-date {
  display: inline-block;
  color: #9fc5ff;
  font-size: 0.78rem;
  margin-bottom: 0.6rem;
}

.news-card h3 {
  font-size: 1.02rem;
  line-height: 1.45;
  margin-bottom: 0.55rem;
}

.news-card p {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.65rem;
}

.news-link {
  color: var(--accent);
  font-size: 0.9rem;
}

.news-link:hover {
  color: var(--accent-2);
}

.custom-accordion .accordion-item {
  border: 1px solid var(--line);
  background: rgba(17, 28, 56, 0.92);
  border-radius: 12px;
  margin-bottom: 0.65rem;
  overflow: hidden;
}

.custom-accordion .accordion-button {
  background: transparent;
  color: #ecf2ff;
  font-weight: 600;
  box-shadow: none;
}

.custom-accordion .accordion-button:not(.collapsed) {
  background: rgba(77, 215, 176, 0.1);
  color: #fff;
}

.custom-accordion .accordion-button::after {
  filter: invert(88%) sepia(9%) saturate(255%) hue-rotate(182deg) brightness(95%) contrast(101%);
}

.custom-accordion .accordion-body {
  color: var(--muted);
  font-size: 0.94rem;
}

.review-panel {
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(18, 29, 58, 0.9);
  padding: 1.2rem;
}

.review-panel h3 {
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
}

.review-panel p {
  color: var(--muted);
  font-size: 0.9rem;
}

.form-label {
  color: #cfe0ff;
  font-size: 0.86rem;
}

.form-control,
.form-select {
  border-radius: 12px;
  border: 1px solid rgba(157, 183, 255, 0.28);
  color: #fff;
  background: rgba(8, 14, 30, 0.75);
}

.form-control::placeholder {
  color: #8da0c7;
}

.form-control:focus,
.form-select:focus {
  border-color: rgba(77, 215, 176, 0.56);
  box-shadow: 0 0 0 0.2rem rgba(77, 215, 176, 0.15);
  background: rgba(8, 14, 30, 0.88);
  color: #fff;
}

.review-list {
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
}

.review-item {
  display: flex;
  gap: 0.85rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(18, 29, 58, 0.9);
  padding: 1rem;
}

.avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  color: #031425;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-2), #f7a94a);
}

.review-content {
  width: 100%;
}

.review-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  margin-bottom: 0.25rem;
}

.review-top h4 {
  margin: 0;
  font-size: 1rem;
}

.review-top span {
  color: #8ea5cf;
  font-size: 0.82rem;
}

.review-content p {
  margin-bottom: 0.45rem;
  color: #d9e6ff;
}

.review-meta {
  display: flex;
  gap: 1rem;
  color: #9fc0ea;
  font-size: 0.84rem;
}

.links-block {
  padding-top: 3.8rem;
}

.friend-link {
  display: block;
  text-align: center;
  color: #e5efff;
  border: 1px solid rgba(157, 183, 255, 0.28);
  background: rgba(19, 31, 62, 0.86);
  border-radius: 12px;
  padding: 0.75rem 0.55rem;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.friend-link:hover {
  color: #fff;
  border-color: rgba(77, 215, 176, 0.52);
  background: rgba(77, 215, 176, 0.15);
}

.site-footer {
  border-top: 1px solid rgba(157, 183, 255, 0.14);
  background: #0a1021;
  padding: 2rem 0;
}

.footer-brand {
  color: #fff;
  font-size: 1.15rem;
  font-weight: 700;
  display: inline-block;
  margin-bottom: 0.35rem;
}

.site-footer p {
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
}

.footer-links a {
  color: #cfe0ff;
  font-size: 0.88rem;
}

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

.copyright,
.copyright a {
  color: #9ab0d8;
  font-size: 0.85rem;
}

.modal-content {
  border-radius: 16px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #131f3d, #0f1934);
  color: #ecf2ff;
}

.modal-header {
  border-bottom: 1px solid rgba(157, 183, 255, 0.18);
}

.modal-body p {
  color: #bdd0f4;
}

@media (max-width: 991.98px) {
  .hero-section {
    padding-top: 7.4rem;
  }

  .hero-preview img {
    height: 230px;
  }
}

@media (max-width: 767.98px) {
  .section-block {
    padding: 3.5rem 0;
  }

  .hero-actions .btn {
    width: 100%;
  }

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

  .review-item {
    flex-direction: column;
  }

  .avatar {
    width: 40px;
    height: 40px;
  }
}