:root {
  --bg-space: #0B1A3A;
  --bg-space-2: #10224B;
  --bg-deep: #080F24;
  --neon-purple: #7B2FBF;
  --neon-bright: #A44CF0;
  --electric-blue: #00D4FF;
  --lime: #C6F432;
  --warm-gray: #F4F5F8;
  --neutral-gray: #E8EAF0;
  --ink-blue: #122A56;
  --white: #FFFFFF;
  --text-primary: #F4F5F8;
  --text-secondary: #B8C2D6;
  --text-muted: #6E7B98;
  --radius-lg: 32px;
  --radius-md: 24px;
  --radius-pill: 999px;
  --transition: 0.3s ease;
  --header-height: 88px;
  --breakpoint-nav: 860px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 300;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-space);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 80% 50% at 82% -10%, rgba(123, 47, 191, 0.34), transparent 70%),
    radial-gradient(ellipse 60% 40% at 8% 18%, rgba(0, 212, 255, 0.14), transparent 60%),
    var(--bg-space);
  pointer-events: none;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 75%);
  pointer-events: none;
}

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

a {
  color: var(--electric-blue);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--neon-bright);
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: 6px;
}

::selection {
  background: var(--neon-purple);
  color: var(--white);
}

main {
  padding-top: var(--header-height);
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-board {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  padding: clamp(28px, 5vw, 64px);
  margin-bottom: 32px;
  border: 1px solid rgba(0, 212, 255, 0.15);
  background:
    linear-gradient(140deg, rgba(123, 47, 191, 0.12) 0%, rgba(123, 47, 191, 0) 36%),
    linear-gradient(320deg, rgba(0, 212, 255, 0.06) 0%, rgba(0, 212, 255, 0) 42%),
    rgba(16, 34, 75, 0.86);
  backdrop-filter: blur(8px);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.section-board:hover {
  border-color: rgba(0, 212, 255, 0.28);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.22);
}

.board-panel {
  position: relative;
  border-radius: var(--radius-md);
  padding: clamp(20px, 3vw, 32px);
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: border-color 0.3s ease, background 0.3s ease, transform 0.3s ease;
}

.board-panel::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.45), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.board-panel:hover {
  border-color: rgba(0, 212, 255, 0.22);
  background: rgba(255, 255, 255, 0.05);
}

.board-panel:hover::after {
  opacity: 1;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-weight: 500;
  font-size: 0.95rem;
  line-height: 1.4;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.btn-lime {
  background: var(--lime);
  color: #0B2012;
  border-color: var(--lime);
}

.btn-lime:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 28px rgba(198, 244, 50, 0.35);
  color: #0B2012;
}

.btn-ghost {
  background: transparent;
  border: 1px solid rgba(0, 212, 255, 0.4);
  color: var(--electric-blue);
}

.btn-ghost:hover {
  background: rgba(0, 212, 255, 0.08);
  border-color: var(--electric-blue);
  color: var(--electric-blue);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  color: var(--electric-blue);
  text-decoration: none;
  transition: gap 0.3s ease, color 0.3s ease;
}

.link-arrow::after {
  content: "→";
  display: inline-block;
}

.link-arrow:hover {
  gap: 12px;
  color: var(--neon-bright);
}

.eyebrow {
  display: inline-block;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(198, 244, 50, 0.32);
  background: rgba(198, 244, 50, 0.06);
  color: var(--lime);
  font-family: "Inter", "PingFang SC", sans-serif;
  font-weight: 400;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 700;
  font-style: italic;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.1;
  color: var(--white);
  transform: skewX(-5deg);
  letter-spacing: 0.02em;
}

.meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-family: "Inter", "PingFang SC", sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-secondary);
}

.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid rgba(0, 212, 255, 0.2);
  aspect-ratio: 4 / 3;
  background:
    linear-gradient(135deg, rgba(123, 47, 191, 0.18), rgba(0, 0, 0, 0) 52%),
    linear-gradient(315deg, rgba(0, 212, 255, 0.1), rgba(0, 0, 0, 0) 48%),
    linear-gradient(180deg, var(--bg-space-2), var(--ink-blue));
}

.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(123, 47, 191, 0.12), rgba(0, 212, 255, 0.06));
  pointer-events: none;
}

.skip-link {
  position: fixed;
  top: -64px;
  left: 16px;
  z-index: 1200;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  background: var(--lime);
  color: #0B2012;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(198, 244, 50, 0.3);
  transition: top 0.3s ease;
}

.skip-link:focus {
  top: 16px;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 1100;
  background: rgba(255, 255, 255, 0.08);
  pointer-events: none;
}

.progress-fill {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--neon-purple), var(--neon-bright), var(--lime));
  transition: width 0.1s linear;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 14px 24px;
  pointer-events: none;
}

.header-inner {
  position: relative;
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  border-radius: var(--radius-pill);
  padding: 8px 10px 8px 20px;
  background: rgba(11, 26, 58, 0.88);
  border: 1px solid rgba(123, 47, 191, 0.45);
  box-shadow: 0 8px 36px rgba(4, 8, 22, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  pointer-events: auto;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.header-inner:hover {
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: 0 8px 44px rgba(4, 8, 22, 0.6), 0 0 24px rgba(123, 47, 191, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.header-inner::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    linear-gradient(120deg, transparent 44%, rgba(0, 212, 255, 0.06) 46%, transparent 52%),
    linear-gradient(215deg, transparent 70%, rgba(123, 47, 191, 0.18) 73%, transparent 84%);
  pointer-events: none;
}

.header-inner > * {
  position: relative;
  z-index: 1;
}

.brand-mark,
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}

.brand-mark:hover,
.footer-logo:hover {
  color: inherit;
}

.brand-name {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 700;
  font-style: italic;
  font-size: 1.25rem;
  letter-spacing: 0.04em;
  color: var(--white);
  transform: skewX(-5deg);
  white-space: nowrap;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 9px;
  border-radius: var(--radius-pill);
  font-family: "Inter", "PingFang SC", sans-serif;
  font-weight: 600;
  font-size: 0.64rem;
  line-height: 1.6;
  color: #fff;
  background: linear-gradient(135deg, var(--neon-purple), var(--neon-bright));
  border: 1px solid rgba(198, 244, 50, 0.25);
  box-shadow: 0 0 12px rgba(123, 47, 191, 0.3);
  letter-spacing: 0.02em;
}

.nav-panel {
  flex: 1;
  display: flex;
  justify-content: center;
  min-width: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
}

.nav-link {
  display: inline-block;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-primary);
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
}

.nav-link:hover {
  background: rgba(164, 76, 240, 0.14);
  color: var(--electric-blue);
}

.nav-link[aria-current="page"] {
  background: linear-gradient(135deg, rgba(123, 47, 191, 0.38), rgba(164, 76, 240, 0.22));
  color: var(--lime);
  box-shadow: inset 0 0 0 1px rgba(0, 212, 255, 0.18);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.member-entry {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--neon-purple), var(--neon-bright));
  color: var(--white);
  font-weight: 500;
  font-size: 0.9rem;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: transform 0.3s ease, box-shadow 0.3s ease, filter 0.3s ease;
}

.member-entry:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 28px rgba(164, 76, 240, 0.45);
  color: var(--white);
  filter: brightness(1.08);
}

.member-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 8px var(--lime);
  animation: dot-pulse 2.4s ease-in-out infinite;
}

.member-text {
  white-space: nowrap;
}

@keyframes dot-pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 4px var(--lime); }
  50% { opacity: 0.65; box-shadow: 0 0 16px var(--lime); }
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(0, 212, 255, 0.18);
  cursor: pointer;
  padding: 0;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(0, 212, 255, 0.4);
}

.toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--electric-blue);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(0, 212, 255, 0.4);
  background: rgba(11, 26, 58, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--lime);
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.back-top[data-visible] {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-top:hover {
  border-color: var(--electric-blue);
  color: var(--electric-blue);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.25);
}

.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: 64px;
  border-top: 1px solid rgba(0, 212, 255, 0.16);
  background:
    radial-gradient(ellipse 60% 42% at 52% 0%, rgba(123, 47, 191, 0.14), transparent 70%),
    linear-gradient(180deg, var(--bg-space) 0%, var(--bg-space-2) 100%);
}

.footer-glow {
  position: absolute;
  top: -160px;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 280px;
  background: radial-gradient(ellipse, rgba(123, 47, 191, 0.24) 0%, rgba(123, 47, 191, 0.06) 40%, transparent 70%);
  pointer-events: none;
}

.footer-container {
  position: relative;
  z-index: 1;
  padding-top: 64px;
  padding-bottom: 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.6fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.footer-slogan {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 600;
  font-size: 1.35rem;
  color: var(--lime);
  letter-spacing: 0.08em;
  line-height: 1.4;
}

.footer-desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 36ch;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-title {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 600;
  font-size: 0.88rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 4px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.92rem;
  text-decoration: none;
  transition: color 0.3s ease, padding-left 0.3s ease;
  display: inline-block;
}

.footer-links a:hover {
  color: var(--electric-blue);
  padding-left: 4px;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-row {
  display: flex;
  gap: 10px;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
}

.contact-label {
  flex-shrink: 0;
  min-width: 32px;
  font-family: "Inter", "PingFang SC", sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding-top: 2px;
}

.contact-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  border-left: 2px solid rgba(0, 212, 255, 0.25);
  padding-left: 12px;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px 24px;
  padding-top: 28px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.meta-icp {
  color: var(--text-muted);
}

.meta-trust {
  color: rgba(198, 244, 50, 0.72);
  letter-spacing: 0.02em;
}

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .footer-desc {
    max-width: none;
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 76px;
  }

  .site-header {
    padding: 12px 16px;
  }

  .header-inner {
    flex-wrap: wrap;
    border-radius: 24px;
    padding: 8px 10px 8px 16px;
    gap: 6px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-panel {
    display: none;
    order: 3;
    width: 100%;
    border-top: 1px solid rgba(0, 212, 255, 0.14);
    margin-top: 6px;
    padding: 6px 0 2px;
  }

  .nav-panel[data-open] {
    display: block;
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    padding: 0;
  }

  .nav-link {
    display: block;
    padding: 12px 16px;
    border-radius: 16px;
    white-space: normal;
  }

  .nav-toggle[data-open] .toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[data-open] .toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[data-open] .toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .section-board {
    border-radius: 24px;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }

  .site-footer {
    margin-top: 40px;
  }

  .footer-container {
    padding-top: 44px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-meta {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .section-board {
    padding: 24px 20px;
    margin-bottom: 20px;
  }
}

@media (max-width: 480px) {
  .member-text {
    display: none;
  }

  .member-entry {
    padding: 10px 14px;
  }

  .brand-name {
    font-size: 1.1rem;
  }

  .back-top {
    right: 16px;
    bottom: 16px;
    width: 44px;
    height: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .member-dot {
    animation: none;
  }

  .progress-fill {
    transition: none;
  }
}