:root {
  --color-bg: #0A0B10;
  --color-card: #101B28;
  --color-neon-cyan: #00E5FF;
  --color-neon-pink: #FF2E88;
  --color-neon-gold: #FFC857;
  --color-paper: #F2E9D0;
  --color-white: #F7F7F2;
  --color-muted: #B0B7C3;
  --font-head: 'Noto Sans SC', 'PingFang SC', sans-serif;
  --font-body: 'Noto Serif SC', 'Songti SC', serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius: 4px;
  --transition: 300ms ease-out;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  background-image: radial-gradient(rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 36px 36px;
  color: var(--color-white);
  line-height: 1.7;
  font-size: 1rem;
}

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

a {
  color: var(--color-neon-cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: .2em;
  transition: color .2s ease;
}

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

ul[class] {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--color-neon-gold);
  outline-offset: 2px;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.2;
  color: var(--color-white);
}

h1 {
  font-size: 2.4rem;
  letter-spacing: -1px;
  text-transform: uppercase;
}

h1 em {
  color: var(--color-neon-cyan);
  font-style: italic;
}

h2 {
  font-size: 1.8rem;
  border-bottom: 2px solid var(--color-neon-pink);
  padding-bottom: .3rem;
  margin-bottom: 1rem;
  display: inline-block;
}

h3 {
  font-size: 1.2rem;
}

p + p {
  margin-top: .75rem;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 1rem;
  z-index: 2000;
  background: var(--color-neon-gold);
  color: var(--color-bg);
  padding: .5rem 1rem;
  border-radius: 0 0 4px 4px;
  font-weight: 700;
  transition: top .3s;
}

.skip-link:focus {
  top: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10,11,16,.85);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 24px rgba(0,0,0,.4);
}

.site-header__inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: .75rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: nowrap;
  position: relative;
}

.site-brand {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  text-decoration: none;
  margin-right: auto;
  white-space: nowrap;
}

.site-brand__name {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--color-white);
  text-transform: uppercase;
}

.site-brand__accent {
  color: var(--color-neon-cyan);
}

.site-brand__sub {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--color-neon-gold);
  background: rgba(255,200,87,.12);
  padding: .15em .45em;
  border-radius: 2px;
  letter-spacing: .06em;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
}

.site-nav__list {
  display: flex;
  gap: 1.75rem;
}

.site-nav__item {
  margin: 0;
}

.site-nav__link {
  display: inline-block;
  font-family: var(--font-head);
  font-size: .85rem;
  font-weight: 700;
  color: var(--color-muted);
  text-decoration: none;
  padding: .35rem .1rem;
  border-bottom: 2px solid transparent;
  transition: color .2s, border-color .2s;
  white-space: nowrap;
}

.site-nav__link:hover {
  color: var(--color-white);
  border-bottom-color: var(--color-neon-cyan);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-neon-gold);
  border-bottom-color: var(--color-neon-gold);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: .6rem 1.2rem;
  color: var(--color-bg);
  background: linear-gradient(135deg, var(--color-neon-cyan), var(--color-neon-pink));
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform .3s ease, box-shadow .3s ease;
}

.header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255,46,136,.35);
  color: var(--color-bg);
}

.site-nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: .5rem;
  flex-direction: column;
  gap: 4px;
}

.site-nav-toggle__bar {
  width: 22px;
  height: 2px;
  background: var(--color-neon-cyan);
  transition: transform .3s, opacity .3s;
}

.site-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: rgba(255,255,255,.06);
  pointer-events: none;
}

.site-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--color-neon-cyan), var(--color-neon-pink), var(--color-neon-gold));
  transition: width .1s linear;
}

.site-footer {
  background: var(--color-card);
  margin-top: 4rem;
  padding: 3rem 1.5rem 1rem;
  position: relative;
  border-top: 1px solid rgba(255,200,87,.4);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-neon-cyan), var(--color-neon-pink), var(--color-neon-gold));
}

.site-footer__inner {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.site-footer__logo {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.5rem;
  color: var(--color-white);
}

.site-footer__tagline {
  color: var(--color-muted);
  font-size: .85rem;
  margin-top: .25rem;
}

.site-footer__heading {
  font-family: var(--font-head);
  font-size: .8rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-neon-gold);
  border-bottom: 1px solid rgba(255,200,87,.3);
  padding-bottom: .5rem;
  margin-bottom: .75rem;
}

.site-footer__list li + li {
  margin-top: .4rem;
}

.site-footer__link {
  color: var(--color-muted);
  text-decoration: none;
  font-size: .9rem;
}

.site-footer__link:hover {
  color: var(--color-neon-cyan);
}

.site-footer__contact {
  font-family: var(--font-mono);
  color: var(--color-white);
  font-size: .85rem;
}

.site-footer__bottom {
  max-width: 1440px;
  margin: 2.5rem auto 0;
  padding-top: 1rem;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 2rem;
  justify-content: space-between;
  align-items: center;
  font-size: .75rem;
  color: var(--color-muted);
}

.site-footer__icp a {
  color: var(--color-muted);
}

.site-footer__icp a:hover {
  color: var(--color-neon-gold);
}

.site-footer__legal {
  flex-basis: 100%;
  text-align: center;
}

.media-frame {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(0,229,255,.08), rgba(255,46,136,.08));
  border: 1px solid rgba(0,229,255,.2);
  border-radius: var(--radius);
}

.media-frame::before {
  content: "暂无图片";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-size: .75rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--color-muted);
  z-index: 0;
}

.media-frame > img,
.media-frame > video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.media-frame--wide {
  padding-top: 42%;
}

.media-frame--square {
  padding-top: 100%;
}

.media-frame--portrait {
  padding-top: 133%;
}

.label {
  display: inline-block;
  padding: .2em .8em;
  background: var(--color-paper);
  color: var(--color-bg);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  border-radius: 2px;
}

.label--gold {
  background: var(--color-neon-gold);
  color: var(--color-bg);
}

.label--cyan {
  background: var(--color-neon-cyan);
  color: var(--color-bg);
}

.label--pink {
  background: var(--color-neon-pink);
  color: var(--color-bg);
}

.note {
  position: relative;
  padding: 1rem 1.25rem 1rem 1.75rem;
  background: rgba(242,233,208,.06);
  border: 1px solid rgba(242,233,208,.2);
  border-left: 3px solid var(--color-neon-gold);
  font-size: .9rem;
  color: var(--color-paper);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.note::before {
  content: "◆";
  position: absolute;
  left: .75rem;
  top: .7rem;
  color: var(--color-neon-gold);
  font-size: .7rem;
}

.btn {
  display: inline-block;
  padding: .7rem 1.4rem;
  background: linear-gradient(135deg, var(--color-neon-cyan), var(--color-neon-pink));
  color: var(--color-bg);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  text-decoration: none;
  border-radius: var(--radius);
  border: 0;
  cursor: pointer;
  transition: transform .3s, box-shadow .3s;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255,46,136,.3);
  color: var(--color-bg);
}

.btn--ghost {
  background: transparent;
  border: 1px solid var(--color-neon-cyan);
  color: var(--color-neon-cyan);
}

.btn--ghost:hover {
  background: rgba(0,229,255,.1);
  color: var(--color-neon-cyan);
}

.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.content-section {
  max-width: 1440px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  font-size: .85rem;
  color: var(--color-muted);
  margin-bottom: 2rem;
}

.breadcrumb a {
  color: var(--color-neon-cyan);
  text-decoration: none;
}

.breadcrumb a[aria-current="page"] {
  color: var(--color-paper);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid--12 {
  grid-template-columns: repeat(12, 1fr);
}

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

.col-span-6 {
  grid-column: span 6;
}

.col-span-8 {
  grid-column: span 8;
}

[data-reveal] {
  transition: opacity .6s ease, transform .6s ease;
}

html.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
}

html.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 1023px) {
  .site-nav__list {
    gap: 1rem;
  }

  .site-nav__link {
    font-size: .75rem;
  }

  .header-cta {
    padding: .5rem .8rem;
    font-size: .75rem;
  }

  .site-brand__sub {
    display: none;
  }
}

@media (max-width: 767px) {
  .site-header__inner {
    flex-wrap: wrap;
    padding: .5rem 1rem;
  }

  .site-brand {
    order: 0;
    margin-right: auto;
  }

  .site-brand__name {
    font-size: 1rem;
  }

  .header-cta {
    order: 1;
    margin-left: 0;
    padding: .5rem .8rem;
    font-size: .75rem;
  }

  .site-nav-toggle {
    order: 2;
    display: inline-flex;
  }

  .site-nav {
    order: 3;
    flex-basis: 100%;
    display: none;
    background: rgba(10,11,16,.98);
    border-top: 1px solid rgba(0,229,255,.2);
    padding: 1rem 0;
    margin-top: .5rem;
  }

  .site-nav[data-open="true"] {
    display: block;
  }

  .site-nav__list {
    flex-direction: column;
    gap: 0;
  }

  .site-nav__item + .site-nav__item {
    border-top: 1px solid rgba(255,255,255,.04);
  }

  .site-nav__link {
    display: block;
    padding: .8rem 1.5rem;
    border-bottom: none;
  }

  .site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

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

  .site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .site-footer__bottom {
    flex-direction: column;
    text-align: center;
  }

  .grid--12 {
    grid-template-columns: 1fr;
  }

  .col-span-4,
  .col-span-6,
  .col-span-8 {
    grid-column: span 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  html.js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}