:root {
  --sb-blue: #0B1F3A;
  --sb-electric: #1E90FF;
  --sb-orange: #FF6A00;
  --sb-silver: #E6E8EB;
  --sb-violet: #7B2FFF;
  --sb-lilac: #B06AB3;
  --sb-deep: #050A14;
  --sb-success: #00C48C;
  --font-display: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Cascadia Mono", Consolas, monospace;
  --container: 1440px;
  --header-h: 84px;
  --space-1: .5rem;
  --space-2: 1rem;
  --space-3: 2rem;
  --space-4: 4rem;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-width: 320px;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--sb-silver);
  background-color: var(--sb-blue);
  background-image:
    linear-gradient(rgba(30,144,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,144,255,.045) 1px, transparent 1px),
    radial-gradient(circle at 72% 0%, rgba(123,47,255,.14), transparent 36%),
    radial-gradient(circle at 0% 82%, rgba(11,31,58,.5), transparent 32%);
  background-size: 40px 40px, 40px 40px, auto, auto;
  padding-top: var(--header-h);
  overflow-x: hidden;
}

main {
  display: block;
}

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

ul, ol {
  list-style: none;
}

a {
  color: var(--sb-electric);
  text-decoration: none;
}

a:hover {
  color: #fff;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  color: #fff;
  line-height: 1.15;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

:focus-visible {
  outline: 2px solid var(--sb-orange);
  outline-offset: 3px;
}

::selection {
  background: var(--sb-orange);
  color: var(--sb-deep);
}

.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;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 1rem;
  z-index: 2000;
  padding: .75rem 1.25rem;
  background: var(--sb-orange);
  color: var(--sb-deep);
  font-weight: 700;
  text-decoration: none;
  transition: top .2s ease;
  box-shadow: 0 8px 30px rgba(5,10,20,.5);
}

.skip-link:focus {
  top: 1rem;
  color: var(--sb-deep);
}

#main-content {
  scroll-margin-top: var(--header-h);
}

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 100vh;
  margin-top: calc(-1 * var(--header-h));
  padding: calc(var(--header-h) + clamp(2rem, 7vh, 5rem)) clamp(1.5rem, 6vw, 4rem) clamp(3rem, 10vh, 6rem);
  overflow: hidden;
  isolation: isolate;
}

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

.frame-window {
  position: relative;
  padding: clamp(2rem, 5vw, 4rem);
  background: linear-gradient(135deg, rgba(11,31,58,.94), rgba(5,10,20,.88));
  border: 1px solid rgba(30,144,255,.35);
  clip-path: polygon(0 0, calc(100% - 32px) 0, 100% 32px, 100% 100%, 32px 100%, 0 calc(100% - 32px));
}

.frame-window::before {
  content: attr(data-index);
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  font-family: var(--font-mono);
  font-size: .625rem;
  letter-spacing: .2em;
  color: var(--sb-orange);
}

.frame-window::after {
  content: "";
  position: absolute;
  left: 1.25rem;
  bottom: 1.25rem;
  width: 3rem;
  height: 1px;
  background: linear-gradient(90deg, var(--sb-electric), transparent);
}

.section {
  padding-block: clamp(3rem, 8vw, 7rem);
}

.section--compact {
  padding-block: clamp(2rem, 5vw, 4rem);
}

.grid-6 {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: clamp(1rem, 2vw, 1.5rem);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2vw, 1.5rem);
}

.col-span-2 {
  grid-column: span 2;
}

.col-span-3 {
  grid-column: span 3;
}

.col-span-4 {
  grid-column: span 4;
}

.index-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .35rem 1rem;
  align-items: end;
  margin-bottom: clamp(1.5rem, 4vw, 3rem);
}

.index-head__num {
  grid-row: 1 / 3;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .15em;
  color: var(--sb-orange);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.index-head__title {
  grid-column: 2;
  margin: 0;
}

.index-head__note {
  grid-column: 2;
  font-size: .875rem;
  color: rgba(230,232,235,.62);
}

.index-rule {
  height: 1px;
  border: 0;
  margin: 2rem 0;
  background: linear-gradient(90deg, var(--sb-orange), var(--sb-electric), transparent);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--sb-electric);
}

.coord-label {
  font-family: var(--font-mono);
  font-size: .625rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--sb-electric);
}

.mono-label {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .1em;
  color: var(--sb-orange);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .75rem 1.25rem;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: .875rem;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .2s ease, border-color .2s ease, color .2s ease, transform .2s ease;
}

.btn--accent {
  background: var(--sb-orange);
  color: var(--sb-deep);
  font-weight: 700;
}

.btn--accent:hover {
  background: #ff7b1f;
  color: var(--sb-deep);
  transform: translateY(-2px);
}

.btn--ghost {
  border-color: rgba(230,232,235,.35);
  background: transparent;
  color: var(--sb-silver);
}

.btn--ghost:hover {
  border-color: var(--sb-electric);
  background: rgba(30,144,255,.12);
  color: #fff;
  transform: translateY(-2px);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  color: var(--sb-silver);
  background: transparent;
  border-bottom: 1px solid rgba(30,144,255,.12);
  transition: background-color .35s ease, border-color .35s ease, box-shadow .35s ease;
}

.site-header[data-scrolled] {
  background: rgba(5,10,20,.88);
  border-bottom-color: rgba(30,144,255,.45);
  box-shadow: 0 .75rem 2.5rem rgba(5,10,20,.4);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.header-inner {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: var(--header-h);
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  flex-shrink: 0;
  text-decoration: none;
}

.brand-lockup__mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, rgba(30,144,255,.16), rgba(123,47,255,.22));
  border: 1px solid var(--sb-electric);
  transform: rotate(45deg);
}

.brand-lockup__orb {
  width: 10px;
  height: 10px;
  background: var(--sb-orange);
  box-shadow: 0 0 12px rgba(255,106,0,.65);
}

.brand-lockup__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-lockup__name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: .02em;
  color: #fff;
}

.brand-lockup__sub {
  font-family: var(--font-mono);
  font-size: .625rem;
  letter-spacing: .2em;
  color: var(--sb-electric);
  text-transform: uppercase;
}

.site-nav {
  margin-inline: auto;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: .2rem;
}

.site-nav__link {
  position: relative;
  display: block;
  padding: .6rem .85rem;
  font-size: .875rem;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--sb-silver);
  transition: color .2s ease, background-color .2s ease, box-shadow .2s ease;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: .85rem;
  right: 100%;
  bottom: .15rem;
  height: 2px;
  background: var(--sb-orange);
  transition: right .25s ease;
}

.site-nav__link:hover {
  color: #fff;
}

.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after {
  right: .85rem;
}

.site-nav__link[aria-current="page"] {
  color: #fff;
  background: rgba(30,144,255,.16);
  box-shadow: inset 0 0 0 1px rgba(30,144,255,.3);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-shrink: 0;
}

.header-login {
  padding: .6rem 1rem;
  font-size: .8125rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: .5rem;
  border: 1px solid rgba(230,232,235,.25);
  background: transparent;
}

.nav-toggle__line {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--sb-silver);
  transition: transform .3s ease, opacity .2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-of-type(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-of-type(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-footer {
  position: relative;
  margin-top: auto;
  background: var(--sb-deep);
  color: var(--sb-silver);
  border-top: 1px solid rgba(30,144,255,.25);
  overflow: hidden;
}

.site-footer a {
  color: var(--sb-silver);
  text-decoration: none;
  transition: color .2s ease;
}

.site-footer a:hover {
  color: var(--sb-orange);
}

.footer-orbit {
  position: absolute;
  right: -16rem;
  bottom: -16rem;
  width: 38rem;
  height: 38rem;
  border-radius: 50%;
  border: 1px solid rgba(30,144,255,.15);
  box-shadow: 0 0 0 40px rgba(30,144,255,.03), 0 0 0 80px rgba(123,47,255,.03);
  pointer-events: none;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: clamp(2rem, 5vw, 4rem) 0 clamp(1.5rem, 3vw, 2.5rem);
}

.brand-lockup--footer .brand-lockup__mark {
  width: 32px;
  height: 32px;
}

.brand-lockup--footer .brand-lockup__name {
  font-size: 1.125rem;
}

.footer-brand__desc {
  max-width: 34rem;
  margin-top: 1rem;
  font-size: .9375rem;
  line-height: 1.8;
  color: rgba(230,232,235,.72);
}

.footer-col__title {
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 400;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--sb-orange);
}

.footer-links,
.footer-contact {
  display: grid;
  gap: .6rem;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .9375rem;
  padding: .25rem 0;
}

.footer-links a::before {
  content: "→";
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--sb-electric);
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .875rem;
  color: rgba(230,232,235,.72);
}

.footer-contact li::before {
  content: "◆";
  font-size: .5rem;
  color: var(--sb-violet);
  align-self: center;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  padding: 1rem 0;
  border-top: 1px solid rgba(230,232,235,.12);
  font-size: .8125rem;
}

.footer-meta a {
  color: var(--sb-electric);
}

.footer-meta a:hover {
  color: var(--sb-orange);
}

.footer-meta__item {
  display: inline-flex;
  gap: 1rem;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .5rem;
  padding: 1.25rem 0 2rem;
  border-top: 1px solid rgba(230,232,235,.08);
  font-size: .8125rem;
  color: rgba(230,232,235,.55);
}

.scroll-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 600;
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border: 1px solid rgba(30,144,255,.6);
  border-radius: 50%;
  background: rgba(5,10,20,.9);
  box-shadow: 0 .5rem 1.5rem rgba(5,10,20,.45);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s, border-color .25s;
}

.scroll-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.scroll-top:hover {
  border-color: var(--sb-orange);
}

.scroll-top::before {
  content: "";
  width: 14px;
  height: 14px;
  border-top: 2px solid var(--sb-orange);
  border-left: 2px solid var(--sb-orange);
  transform: rotate(45deg) translate(2px, 3px);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  padding: .75rem 0;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .08em;
  color: rgba(230,232,235,.55);
}

.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: .5rem;
  color: var(--sb-electric);
}

.breadcrumbs a {
  color: var(--sb-silver);
}

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

.prose {
  max-width: 75ch;
  font-size: 1rem;
  line-height: 1.9;
}

.prose p {
  margin-bottom: 1rem;
}

.prose h2 {
  margin-top: 1.5rem;
  margin-bottom: .5rem;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .875rem;
  background: linear-gradient(180deg, rgba(30,144,255,.05), transparent);
}

.data-table th {
  padding: .75rem .75rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 400;
  letter-spacing: .14em;
  text-transform: uppercase;
  text-align: left;
  color: var(--sb-electric);
  border-bottom: 1px solid rgba(30,144,255,.4);
  white-space: nowrap;
}

.data-table td {
  padding: .75rem;
  color: var(--sb-silver);
  border-bottom: 1px solid rgba(230,232,235,.08);
}

.data-table tbody tr:hover td {
  background: rgba(30,144,255,.06);
}

.stat-pill {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .25rem .75rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .08em;
  color: var(--sb-silver);
  background: rgba(5,10,20,.4);
  border: 1px solid rgba(30,144,255,.35);
}

.live-dot {
  position: relative;
  width: .5rem;
  height: .5rem;
  border-radius: 50%;
  background: var(--sb-orange);
  box-shadow: 0 0 0 0 rgba(255,106,0,.5);
  animation: livePulse 2s ease-out infinite;
}

@keyframes livePulse {
  0% {
    box-shadow: 0 0 0 0 rgba(255,106,0,.5);
  }
  70% {
    box-shadow: 0 0 0 .6rem rgba(255,106,0,0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(255,106,0,0);
  }
}

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, rgba(30,144,255,.15), rgba(123,47,255,.08)),
    repeating-linear-gradient(45deg, transparent 0 10px, rgba(230,232,235,.03) 10px 11px);
  border: 1px solid rgba(30,144,255,.3);
}

.media-frame::after {
  content: attr(data-caption);
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: .35rem .75rem;
  font-family: var(--font-mono);
  font-size: .625rem;
  letter-spacing: .1em;
  color: var(--sb-silver);
  background: linear-gradient(90deg, var(--sb-deep), var(--sb-blue));
  border-top: 1px solid rgba(255,106,0,.5);
  opacity: .92;
}

.media-frame > img,
.media-frame__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

.media-frame:hover > img,
.media-frame:hover .media-frame__img {
  transform: scale(1.03);
}

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

.media-frame--wide {
  aspect-ratio: 21 / 9;
}

.route-map {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  border-top: 1px solid rgba(30,144,255,.3);
  border-left: 1px solid rgba(30,144,255,.3);
}

.route-map__item {
  padding: 1.5rem;
  background: rgba(5,10,20,.4);
  border-right: 1px solid rgba(30,144,255,.15);
  border-bottom: 1px solid rgba(30,144,255,.15);
}

.route-map__num {
  display: block;
  margin-bottom: .75rem;
  font-family: var(--font-mono);
  font-size: .625rem;
  letter-spacing: .12em;
  color: var(--sb-orange);
}

.route-map__link {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
}

.route-map__link::after {
  content: "→";
  font-family: var(--font-mono);
  color: var(--sb-orange);
  transition: transform .2s ease;
}

.route-map__link:hover::after {
  transform: translateX(4px);
}

[data-scroll-target] {
  color: var(--sb-silver);
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: .5rem;
  transition: color .2s ease, border-color .2s ease;
}

[data-scroll-target]:hover,
[data-scroll-target].is-active {
  color: var(--sb-orange);
  border-left-color: var(--sb-orange);
}

.panel {
  background: rgba(5,10,20,.35);
  border-bottom: 1px solid rgba(30,144,255,.22);
}

.panel__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1.1rem 1rem;
  text-align: left;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  background: none;
  border: 0;
}

.panel__trigger::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--sb-orange);
  transition: transform .2s ease;
}

.panel[data-open] .panel__trigger::after {
  content: "−";
}

.panel__content {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .35s ease;
}

.panel[data-open] .panel__content {
  grid-template-rows: 1fr;
}

.panel__content-inner {
  overflow: hidden;
  padding: 0 1rem 1.1rem;
  color: rgba(230,232,235,.75);
}

@media (max-width: 1199px) {
  :root {
    --header-h: 68px;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-inline: 0;
    background: rgba(5,10,20,.98);
    border-top: 1px solid rgba(30,144,255,.2);
    border-bottom: 1px solid rgba(30,144,255,.35);
    clip-path: inset(0 0 100% 0);
    visibility: hidden;
    opacity: 0;
    transition: clip-path .35s ease, opacity .25s ease, visibility .25s;
  }

  .site-nav[data-open] {
    clip-path: inset(0 0 0 0);
    visibility: visible;
    opacity: 1;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: .5rem clamp(1.25rem, 5vw, 3rem) 1rem;
  }

  .site-nav__link {
    padding: .9rem .5rem;
    font-size: 1rem;
    border-bottom: 1px solid rgba(230,232,235,.08);
  }

  .site-nav__link::after {
    display: none;
  }

  .site-nav__link[aria-current="page"] {
    box-shadow: none;
    background: rgba(30,144,255,.08);
    border-bottom: 1px solid var(--sb-orange);
  }

  .nav-toggle {
    display: flex;
  }

  .header-login {
    padding: .55rem .9rem;
    font-size: .8125rem;
  }
}

@media (max-width: 767px) {
  .grid-6,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .col-span-2,
  .col-span-3,
  .col-span-4 {
    grid-column: span 1;
  }

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

  .footer-bottom {
    flex-direction: column;
  }

  .hero {
    min-height: 92vh;
  }
}

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

  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    transition-delay: 0s !important;
  }
}