:root {
  --deep-space-blue: #0B0F24;
  --space-blue-light: #1A2140;
  --neon-green: #39FF14;
  --electric-orange: #FF7A00;
  --signal-blue: #00BFFF;
  --data-ink: #E0E6F0;
  --muted-ink: #9AA3B8;
  --line-grid: #2A3350;
  --glow-green-alpha: rgba(57,255,20,.15);
  --warning-orange-alpha: rgba(255,122,0,.2);

  --bg: #0B0F24;
  --bg-lift: #1A2140;
  --neon: #39FF14;
  --orange: #FF7A00;
  --signal: #00BFFF;
  --ink: #E0E6F0;
  --muted: #9AA3B8;
  --grid: #2A3350;

  --header-w: 280px;
  --topbar-h: 64px;
  --container-w: 1240px;
  --ease: cubic-bezier(.2, .7, .3, 1);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", "Roboto Mono", "Liberation Mono", Consolas, monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  padding-left: var(--header-w);
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(57,255,20,.07), transparent 32%),
    radial-gradient(circle at 88% 0%, rgba(0,191,255,.07), transparent 34%),
    linear-gradient(rgba(42,51,80,.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42,51,80,.22) 1px, transparent 1px);
  background-size: 100px 100px, 160px 160px, 32px 32px, 32px 32px;
  background-attachment: fixed;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

button {
  font: inherit;
  cursor: pointer;
}

ul, ol {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: rgba(57,255,20,.28);
  color: var(--ink);
}

.skip-link {
  position: fixed;
  top: .75rem;
  left: .75rem;
  z-index: 300;
  padding: .7rem 1.1rem;
  background: var(--neon);
  color: #041;
  border-radius: 6px;
  font-weight: 800;
  font-size: .85rem;
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform .22s var(--ease);
  box-shadow: 0 0 22px rgba(57,255,20,.35);
}

.skip-link:focus {
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: min(100% - 2.5rem, var(--container-w));
  margin-inline: auto;
}

.page-main {
  min-height: 70vh;
  padding: 2.5rem 0 4rem;
  position: relative;
}

.page-main:focus {
  outline: none;
}

.section {
  padding: 3rem 0;
}

.grid {
  display: grid;
  gap: 1.25rem;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.chamfer {
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.chamfer-sm {
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.site-header {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--header-w);
  z-index: 100;
  display: flex;
  flex-direction: column;
  padding: 1.4rem 1rem 1rem;
  background:
    linear-gradient(160deg, rgba(13,18,43,.98), rgba(11,15,36,.98)),
    radial-gradient(circle at 30% 10%, rgba(57,255,20,.08), transparent 45%);
  border-right: 1px solid var(--grid);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .5;
  background-image:
    linear-gradient(rgba(42,51,80,.25) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42,51,80,.25) 1px, transparent 1px);
  background-size: 24px 24px;
}

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

.brand {
  display: flex;
  align-items: center;
  margin-bottom: 2rem;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, var(--neon) 0%, #00E0C6 55%, var(--signal) 100%);
  color: #06120A;
  font-family: var(--font-mono);
  font-weight: 900;
  font-size: .78rem;
  letter-spacing: .04em;
  clip-path: polygon(0 0, 100% 0, 100% 72%, 50% 100%, 0 72%);
  box-shadow: 0 0 18px rgba(57,255,20,.3);
}

.brand-link:hover .brand-mark {
  box-shadow: 0 0 26px rgba(57,255,20,.5);
}

.brand-caption {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-cn {
  font-size: 1.12rem;
  font-weight: 900;
  letter-spacing: .06em;
}

.brand-sub {
  font-size: .6rem;
  letter-spacing: .16em;
  color: var(--muted);
  text-transform: uppercase;
}

.site-nav {
  display: block;
  margin-top: .75rem;
}

.nav-list {
  display: grid;
  gap: .2rem;
}

.nav-item {
  margin: 0;
}

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: .52rem .7rem;
  color: var(--muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: .7rem;
  bottom: .28rem;
  width: 0;
  height: 2px;
  background: var(--neon);
  transition: width .22s var(--ease);
}

.nav-index {
  font-family: var(--font-mono);
  font-size: .68rem;
  color: var(--grid);
  min-width: 1.6rem;
  transition: color .2s;
}

.nav-label {
  font-size: .92rem;
  font-weight: 600;
  letter-spacing: .05em;
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--ink);
  border-left-color: var(--neon);
  background: linear-gradient(90deg, rgba(57,255,20,.13), transparent 82%);
}

.nav-link:hover .nav-index,
.nav-link[aria-current="page"] .nav-index {
  color: var(--neon);
}

.nav-link:hover::after,
.nav-link[aria-current="page"]::after {
  width: 1.5rem;
}

.header-status {
  margin-top: auto;
  padding: .9rem 1rem;
  background: rgba(19,24,53,.6);
  border: 1px solid var(--grid);
  border-radius: 10px;
  position: relative;
  overflow: hidden;
}

.header-status::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(57,255,20,.12), transparent 60%);
  pointer-events: none;
}

.status-live {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--neon);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 10px var(--neon);
  animation: live-pulse 1.8s ease-in-out infinite;
}

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

.status-round {
  margin-top: .45rem;
  font-size: .85rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: .04em;
}

.status-clock {
  display: block;
  margin-top: .35rem;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .06em;
  color: var(--signal);
  font-variant-numeric: tabular-nums;
}

@keyframes live-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .35; transform: scale(.85); }
}

.nav-toggle {
  display: none;
  position: relative;
  z-index: 3;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 0;
  background: rgba(19,24,53,.7);
  border: 1px solid var(--grid);
  border-radius: 8px;
  color: var(--ink);
}

.nav-toggle-line {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .25s var(--ease), opacity .2s, background .2s;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background: var(--neon);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background: var(--neon);
}

.nav-backdrop {
  display: none;
}

.rail-progress {
  position: absolute;
  top: 0;
  right: 0;
  width: 3px;
  height: 100%;
  z-index: 6;
  transform-origin: top center;
  transform: scaleY(0);
  pointer-events: none;
}

.rail-progress::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--neon), var(--signal));
  box-shadow: 0 0 14px rgba(57,255,20,.55);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .68rem 1.15rem;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: .92rem;
  letter-spacing: .04em;
  text-decoration: none;
  transition: background .2s, border-color .2s, box-shadow .25s, transform .2s;
}

.btn-primary {
  background: var(--neon);
  border-color: var(--neon);
  color: #021408;
  box-shadow: 0 0 18px rgba(57,255,20,.22);
}

.btn-primary:hover {
  background: #63ff45;
  box-shadow: 0 0 26px rgba(57,255,20,.38);
  transform: translateY(-1px);
}

.btn-ghost {
  background: rgba(19,24,53,.65);
  border-color: var(--grid);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--signal);
  color: var(--signal);
  background: rgba(0,191,255,.06);
  box-shadow: 0 0 14px rgba(0,191,255,.16);
}

.btn-orange {
  background: var(--orange);
  border-color: var(--orange);
  color: #2b1200;
  box-shadow: 0 0 18px rgba(255,122,0,.22);
}

.btn-orange:hover {
  background: #ff8c26;
  box-shadow: 0 0 26px rgba(255,122,0,.4);
  transform: translateY(-1px);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .28rem .65rem;
  border: 1px solid var(--grid);
  border-radius: 999px;
  background: rgba(19,24,53,.55);
  color: var(--muted);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .05em;
}

.tag-live {
  border-color: rgba(57,255,20,.45);
  color: var(--neon);
  background: rgba(57,255,20,.08);
}

.tag-warn {
  border-color: rgba(255,122,0,.45);
  color: var(--orange);
  background: rgba(255,122,0,.08);
}

.card {
  position: relative;
  overflow: hidden;
  padding: 1.3rem;
  background: linear-gradient(160deg, rgba(26,33,64,.82), rgba(11,15,36,.92));
  border: 1px solid var(--grid);
  border-radius: 10px;
  transition: transform .25s var(--ease), border-color .25s, box-shadow .3s;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 32px;
  height: 3px;
  background: linear-gradient(90deg, var(--neon), var(--signal));
  opacity: .85;
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(57,255,20,.38);
  box-shadow: 0 14px 34px rgba(0,0,0,.35), 0 0 18px rgba(57,255,20,.07);
}

.card-title {
  font-size: 1.08rem;
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: .4rem;
}

.card-meta {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: .5rem;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--neon);
  margin-bottom: .6rem;
}

.eyebrow::before {
  content: "";
  width: 16px;
  height: 2px;
  background: var(--neon);
  box-shadow: 0 0 8px rgba(57,255,20,.6);
}

.title-lg {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: .01em;
  margin: .35rem 0 .6rem;
}

.title-md {
  font-size: 1.16rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: .35rem;
}

.lede {
  color: var(--muted);
  font-size: .98rem;
  line-height: 1.65;
  max-width: 48rem;
}

.data-mono {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
  letter-spacing: .03em;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .3rem .7rem;
  padding: 1.1rem 0 0;
  margin-bottom: 1.2rem;
  font-size: .82rem;
  color: var(--muted);
  border-top: 1px solid rgba(42,51,80,.6);
}

.breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  transition: color .2s;
}

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

.breadcrumbs li + li::before {
  content: "/";
  margin-right: .7rem;
  color: var(--grid);
}

.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background: var(--bg-lift);
  border: 1px solid var(--grid);
  border-radius: 10px;
}

.media-frame::before {
  content: attr(data-label);
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  place-items: center;
  padding: 1rem;
  text-align: center;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  background-image:
    linear-gradient(rgba(42,51,80,.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42,51,80,.3) 1px, transparent 1px);
  background-size: 20px 20px;
}

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

.media-16x9 {
  aspect-ratio: 16 / 9;
}

.media-1x1 {
  aspect-ratio: 1 / 1;
}

.media-3x4 {
  aspect-ratio: 3 / 4;
}

.site-footer {
  position: relative;
  margin-top: 4rem;
  padding-top: 3rem;
  background: linear-gradient(180deg, #070A18, #0A0E22);
  border-top: 1px solid var(--grid);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(57,255,20,.5), transparent);
}

.site-footer::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(57,255,20,.06), transparent 68%);
  pointer-events: none;
}

.footer-top {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1.1fr 1.7fr;
  gap: 2rem 2.5rem;
  padding-bottom: 2.5rem;
}

.footer-brandblock {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .8rem;
}

.footer-logo {
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: .05em;
}

.footer-logo sup {
  font-family: var(--font-mono);
  font-size: .58em;
  color: var(--neon);
  margin-left: .35em;
  font-weight: 700;
}

.footer-brief {
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.65;
  max-width: 34rem;
}

.footer-sync {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--muted);
}

.sync-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 9px rgba(57,255,20,.9);
  animation: live-pulse 2s infinite;
}

.footer-col,
.footer-col-nav,
.footer-col-legal,
.footer-col-contact {
  display: grid;
  align-content: start;
  gap: .4rem;
}

.footer-title {
  position: relative;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--ink);
  text-transform: uppercase;
  margin-bottom: .6rem;
  padding-bottom: .45rem;
}

.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background: var(--neon);
}

.footer-links,
.footer-contact {
  display: grid;
  gap: .5rem;
}

.footer-links li,
.footer-contact li {
  margin: 0;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: .88rem;
  transition: color .2s, padding-left .2s;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--neon);
  padding-left: 4px;
}

.footer-contact {
  color: var(--muted);
  font-size: .85rem;
  line-height: 1.55;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .4rem 1rem;
  padding: 1.05rem 0;
  border-top: 1px solid rgba(42,51,80,.55);
  font-size: .8rem;
  color: var(--muted);
}

.footer-copy,
.footer-icp {
  margin: 0;
}

.footer-icp {
  font-family: var(--font-mono);
  letter-spacing: .04em;
}

.back-top {
  position: fixed;
  right: 1.3rem;
  bottom: 1.3rem;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  padding: 0;
  border-radius: 10px;
  border: 1px solid var(--grid);
  background: rgba(13,18,43,.92);
  color: var(--neon);
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .04em;
  box-shadow: 0 0 16px rgba(0,0,0,.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .25s var(--ease), transform .25s var(--ease), border-color .25s, box-shadow .25s;
}

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

.back-top:hover {
  border-color: var(--neon);
  box-shadow: 0 0 20px rgba(57,255,20,.25);
}

@media (min-width: 981px) and (max-height: 700px) {
  .header-status {
    display: none;
  }
}

@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-top {
    grid-template-columns: 1.6fr 1fr 1fr;
  }

  .footer-brandblock {
    grid-column: 1 / -1;
  }
}

@media (max-width: 980px) {
  body {
    padding-left: 0;
    padding-top: var(--topbar-h);
    background-size: 80px 80px, 120px 120px, 24px 24px, 24px 24px;
  }

  .site-header {
    inset: 0 0 auto 0;
    width: 100%;
    height: var(--topbar-h);
    flex-direction: row;
    align-items: center;
    gap: .6rem;
    padding: 0 .9rem;
    border-right: 0;
    border-bottom: 1px solid var(--grid);
  }

  .site-header::before {
    display: none;
  }

  .brand {
    margin-bottom: 0;
    margin-right: auto;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    font-size: .68rem;
  }

  .brand-cn {
    font-size: 1rem;
  }

  .brand-sub {
    display: none;
  }

  .site-nav {
    position: fixed;
    top: var(--topbar-h);
    left: 0;
    bottom: 0;
    width: 300px;
    max-width: 86vw;
    display: block;
    margin-top: 0;
    padding: 1.25rem 1rem;
    background: rgba(10,14,32,.98);
    border-right: 1px solid var(--grid);
    box-shadow: 16px 0 40px rgba(0,0,0,.5);
    transform: translateX(-100%);
    transition: transform .32s var(--ease);
    overflow-y: auto;
    z-index: 101;
  }

  .site-nav[data-open] {
    transform: translateX(0);
  }

  .nav-backdrop {
    position: fixed;
    inset: var(--topbar-h) 0 0 0;
    display: none;
    background: rgba(5,7,17,.62);
    backdrop-filter: blur(3px);
    z-index: 100;
  }

  .site-nav[data-open] ~ .nav-backdrop {
    display: block;
  }

  .nav-backdrop[hidden] {
    display: none;
  }

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

  .header-status {
    display: flex;
    align-items: center;
    gap: .55rem;
    margin: 0;
    padding: .32rem .7rem;
    border-radius: 999px;
    background: rgba(19,24,53,.6);
    border-color: rgba(57,255,20,.28);
  }

  .status-live {
    font-size: .62rem;
  }

  .status-text {
    display: none;
  }

  .status-round {
    display: none;
  }

  .status-clock {
    font-size: .72rem;
    margin: 0;
  }

  .rail-progress {
    top: auto;
    right: auto;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    transform-origin: left center;
    transform: scaleX(0);
  }

  .rail-progress::after {
    background: linear-gradient(90deg, var(--neon), var(--signal));
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 1.75rem;
  }

  .footer-brandblock {
    grid-column: 1 / -1;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(100% - 1.5rem, var(--container-w));
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .page-main {
    padding: 1.6rem 0 3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001s !important;
  }

  html {
    scroll-behavior: auto;
  }
}