:root {
  --bg: #0A1428;
  --bg-panel: #0F1D3A;
  --border: #234070;
  --text: #FFFFFF;
  --text-dim: #A0B0C8;
  --accent: #39FF14;
  --accent-2: #FF6600;
  --font-heading: Impact, "Arial Black", sans-serif;
  --font-body: "Microsoft YaHei", "微软雅黑", sans-serif;
  --header-max: 1280px;
}

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

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

body {
  margin: 0;
  font-family: var(--font-body);
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 85% 10%, rgba(57, 255, 20, 0.08), transparent 26rem),
    radial-gradient(circle at 12% 85%, rgba(255, 102, 0, 0.06), transparent 24rem),
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: auto, auto, 100% 5rem;
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.6;
}

h1, h2, h3, h4, p, ul, ol, dl, dd, figure, blockquote {
  margin: 0;
}

ul, ol {
  padding: 0;
  list-style: none;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  appearance: none;
  -webkit-appearance: none;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
}

address {
  font-style: normal;
}

:focus {
  outline: none;
}

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

[hidden] {
  display: none !important;
}

body::selection {
  background: var(--accent);
  color: #0A1428;
}

.container {
  width: min(1180px, 100% - 2rem);
  margin-inline: auto;
}

.site-main {
  position: relative;
  z-index: 1;
  min-height: 70vh;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -4rem;
  z-index: 2000;
  background: var(--accent);
  color: #0A1428;
  font-weight: 700;
  padding: 0.6rem 1rem;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: relative;
  background: rgba(10, 20, 40, 0.7);
  border-bottom: 1px solid var(--border);
}

.site-header__inner,
.site-header__nav-bar {
  position: relative;
  z-index: 1;
}

.site-header__inner {
  max-width: var(--header-max);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.site-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 1500;
  background: rgba(57, 255, 20, 0.12);
}

.site-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}

.masthead {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding: 2.2rem 0 1.2rem;
}

.masthead::before,
.masthead::after {
  content: "";
  height: 1px;
}

.masthead::before {
  background: linear-gradient(90deg, rgba(35, 64, 112, 0.4), rgba(57, 255, 20, 0.5));
}

.masthead::after {
  background: linear-gradient(90deg, rgba(57, 255, 20, 0.5), rgba(35, 64, 112, 0.4));
}

.brand {
  grid-column: 2;
  justify-self: center;
  display: inline-flex;
  align-items: center;
}

.brand__name {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: clamp(2.5rem, 7vw, 5rem);
  line-height: 0.85;
  letter-spacing: 0.03em;
  color: var(--text);
  transform: skewX(-7deg);
  text-shadow: 4px 4px 0 rgba(57, 255, 20, 0.32);
}

.brand__suffix {
  margin-left: 0.45rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  border: 1px solid rgba(57, 255, 20, 0.4);
  background: rgba(57, 255, 20, 0.06);
  padding: 0.25em 0.4em;
}

.masthead__meta {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
}

.sync-status {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid var(--border);
  background: rgba(15, 29, 58, 0.7);
  color: var(--text-dim);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  padding: 0.35rem 0.6rem;
}

.sync-status__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: aifa-pulse 1.8s infinite;
}

@keyframes aifa-pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.4;
    transform: scale(0.75);
  }
}

.site-header__nav-bar {
  min-height: 3.25rem;
  border-top: 1px solid rgba(35, 64, 112, 0.8);
  background: rgba(15, 29, 58, 0.85);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.site-nav__link {
  position: relative;
  display: block;
  padding: 0.9rem 1.15rem;
  color: var(--text-dim);
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  font-weight: 700;
  border-bottom: 3px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 1.15rem;
  right: 1.15rem;
  bottom: -3px;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.site-nav__link:hover {
  color: var(--text);
}

.site-nav__link[aria-current="page"] {
  color: var(--accent);
}

.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
}

.site-footer {
  position: relative;
  background: #081021;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
}

.site-footer::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--accent) 0, var(--accent) 38%, var(--accent-2) 38%, var(--accent-2) 62%, transparent 62%);
}

.site-footer__inner {
  max-width: var(--header-max);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.site-footer__top {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.8fr;
  gap: 2.5rem;
  padding-block: 3rem;
}

.footer-brand {
  display: grid;
  align-content: start;
  gap: 0.6rem;
}

.footer-brand__name {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: 2.2rem;
  line-height: 1;
  color: var(--text);
  letter-spacing: 0.05em;
}

.footer-brand__slogan {
  font-size: 0.875rem;
  line-height: 1.7;
  max-width: 30rem;
}

.footer-links {
  display: grid;
  align-content: start;
  gap: 0.75rem;
}

.footer-nav {
  display: grid;
  gap: 0.65rem;
}

.footer-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-dim);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  transition: color 0.2s ease;
}

.footer-nav__link::before {
  content: "/";
  color: var(--accent);
  font-weight: 700;
}

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

.footer-contact {
  display: grid;
  gap: 0.4rem;
  font-size: 0.82rem;
  line-height: 1.7;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.5rem;
  padding-block: 1.1rem;
  border-top: 1px solid var(--border);
  font-size: 0.72rem;
  letter-spacing: 0.03em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0.65rem 1.4rem;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  text-align: center;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  background: var(--accent);
  color: #0A1428;
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.25);
}

.btn--primary {
  background: var(--accent);
  color: #0A1428;
  border-color: var(--accent);
  box-shadow: 0 0 16px rgba(57, 255, 20, 0.2);
}

.btn--primary:hover {
  background: #2fd612;
  border-color: #2fd612;
  box-shadow: 0 0 24px rgba(57, 255, 20, 0.35);
}

.btn--danger {
  border-color: var(--accent-2);
  color: var(--accent-2);
}

.btn--danger:hover {
  background: var(--accent-2);
  color: #0A1428;
  box-shadow: 0 0 20px rgba(255, 102, 0, 0.3);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 1.5rem 0 2rem;
  font-size: 0.8rem;
}

.breadcrumbs__item {
  display: inline-flex;
  align-items: center;
}

.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 0.4rem;
  color: var(--border);
}

.breadcrumbs__link {
  color: var(--text-dim);
  transition: color 0.2s ease;
}

.breadcrumbs__link:hover {
  color: var(--accent);
}

.breadcrumbs__link[aria-current="page"] {
  color: var(--accent);
}

.section {
  position: relative;
  padding-block: clamp(2rem, 6vw, 4.5rem);
}

.section__label {
  display: inline-block;
  margin-bottom: 0.5rem;
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  color: var(--accent);
  text-transform: uppercase;
}

.section__title {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 0.9;
  margin-bottom: 1.5rem;
}

.note-vertical {
  writing-mode: vertical-rl;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  text-transform: uppercase;
}

.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));
}

.card {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  padding: 1.4rem;
}

.card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 12px;
  height: 12px;
  border-top: 2px solid var(--accent);
  border-left: 2px solid var(--accent);
}

.card::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 12px;
  height: 12px;
  border-right: 2px solid var(--accent-2);
  border-bottom: 2px solid var(--accent-2);
}

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--bg-panel);
  border: 1px solid var(--border);
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(57, 255, 20, 0.15), transparent 40%),
    linear-gradient(115deg, transparent 30%, rgba(57, 255, 20, 0.2) 31%, transparent 38%, transparent 60%, rgba(255, 102, 0, 0.14) 61%, transparent 70%);
  background-size: 200% 200%;
  animation: aifa-drift 8s linear infinite;
}

.media-frame::after {
  content: "AIFA / LIVE";
  position: absolute;
  right: 0.75rem;
  bottom: 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  opacity: 0.7;
}

@keyframes aifa-drift {
  from {
    background-position: 0% 0%;
  }
  to {
    background-position: 100% 100%;
  }
}

.tabs {
  display: grid;
  margin: 1.5rem 0;
}

.tabs__list {
  display: flex;
  gap: 0.25rem;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
}

.tabs__trigger {
  appearance: none;
  -webkit-appearance: none;
  border: 1px solid transparent;
  border-bottom: 0;
  padding: 0.65rem 1.1rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-dim);
  background: transparent;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.tabs__trigger:hover {
  color: var(--text);
}

.tabs__trigger[aria-selected="true"] {
  color: var(--accent);
  border-color: var(--border);
  background: var(--bg-panel);
  box-shadow: inset 0 2px 0 var(--accent);
}

.tabs__panel {
  padding: 1.25rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-top: 0;
}

.tabs__panel[hidden] {
  display: none;
}

html.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

@media (max-width: 980px) {
  .site-header__nav-bar {
    overflow-x: auto;
  }

  .site-nav__link {
    padding: 0.8rem 0.8rem;
    font-size: 0.76rem;
  }

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

@media (max-width: 760px) {
  .site-header__inner {
    padding-inline: 1rem;
  }

  .masthead {
    grid-template-columns: 1fr;
    padding: 1.5rem 0 1rem;
  }

  .masthead::before,
  .masthead::after {
    display: none;
  }

  .brand {
    grid-column: 1;
    justify-self: center;
  }

  .masthead__meta {
    position: static;
    transform: none;
    justify-self: center;
    margin-top: 0.5rem;
  }

  .site-header__nav-bar {
    min-height: 3.75rem;
  }

  .site-nav {
    display: none;
  }

  .site-nav[data-open="true"] {
    display: flex;
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    padding: 0.4rem clamp(1rem, 4vw, 1.5rem);
    z-index: 20;
  }

  .site-nav[data-open="true"] .site-nav__list {
    flex-direction: column;
    width: 100%;
  }

  .site-nav[data-open="true"] .site-nav__link {
    border-bottom: 1px solid var(--border);
    padding: 0.8rem 0;
  }

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

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text);
    padding: 0.5rem;
  }

  .nav-toggle__line {
    display: block;
    width: 1.3rem;
    height: 2px;
    background: currentColor;
    margin: 3px 0;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .nav-toggle__label {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    color: var(--text-dim);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
  }

  .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(-5px) rotate(-45deg);
  }

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

@media (max-width: 680px) {
  .site-footer__top {
    grid-template-columns: 1fr;
    padding-block: 2rem;
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }
}

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

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

  .sync-status__dot {
    animation: none;
  }

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