*, *::before, *::after { box-sizing: border-box; }
:root {
  --color-bg: #0A1F44;
  --color-accent: #FF6B35;
  --color-cyan: #00E5FF;
  --color-paper: #F5F0E6;
  --color-stone: #A8A29E;
  --color-moss: #7A9E7E;
  --color-clay: #C67C5B;
  --color-ice: #8B9BB4;
  --header-w: 280px;
  --gutter: clamp(18px, 4vw, 56px);
  --container: 1220px;
  --font-heading: "Anton", "Impact", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Fira Code", "SFMono-Regular", Consolas, monospace;
  --ease: 220ms ease;
  --shadow: 0 14px 40px rgba(0, 0, 0, .35);
}
html { scroll-behavior: smooth; scrollbar-color: var(--color-cyan) var(--color-bg); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-paper);
  font-family: var(--font-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, p, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: var(--color-cyan); text-decoration: none; text-underline-offset: 3px; }
a:hover { color: var(--color-accent); }
img { max-width: 100%; display: block; }
button { font: inherit; }
[hidden] { display: none !important; }
::selection { background: var(--color-accent); color: var(--color-bg); }
:focus-visible { outline: 3px solid var(--color-cyan); outline-offset: 3px; }

#main-content { display: block; min-height: 72vh; }
.container {
  width: min(100% - 2 * var(--gutter), var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 3000;
  padding: 10px 16px;
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 800;
  transform: translateY(-300%);
  transition: transform var(--ease);
}
.skip-link:focus-visible { transform: translateY(0); }

.site-header {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--header-w);
  z-index: 1000;
  background:
    radial-gradient(circle at 10% 8%, rgba(0, 229, 255, .16), transparent 44%),
    linear-gradient(155deg, rgba(255, 107, 53, .12), transparent 34%),
    var(--color-bg);
  border-right: 1px solid rgba(0, 229, 255, .24);
  overflow: hidden;
}
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(0, 229, 255, .08), transparent 30%, rgba(255, 107, 53, .06));
  pointer-events: none;
}
.site-header::after {
  content: "[ LEYU / CN ]";
  position: absolute;
  right: 10px;
  bottom: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .08em;
  color: rgba(0, 229, 255, .18);
  pointer-events: none;
}
.site-header__inner {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 28px 22px 20px;
}

.site-brand { display: flex; align-items: center; gap: 12px; color: var(--color-paper); margin-bottom: 40px; }
.site-brand__mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-accent), #d9481a);
  transform: skewX(-8deg);
  box-shadow: 0 4px 18px rgba(255, 107, 53, .35);
}
.site-brand__slash { color: var(--color-bg); font-family: var(--font-mono); font-weight: 800; font-size: 18px; letter-spacing: -2px; }
.site-brand__text { min-width: 0; }
.site-brand__name { display: block; font-family: var(--font-heading); font-size: 19px; line-height: 1.15; letter-spacing: .02em; }
.site-brand__sub { display: block; margin-top: 3px; font-family: var(--font-mono); font-size: 10px; letter-spacing: .16em; color: var(--color-cyan); text-transform: uppercase; }

.site-nav-toggle { display: none; }

.site-nav { flex: 1 1 auto; display: block; }
.site-nav__list { display: grid; gap: 4px; margin: 32px 0 0; counter-reset: rail; }
.site-nav__item { counter-increment: rail; }
.site-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  color: var(--color-paper);
  font-weight: 700;
  border-inline-start: 2px solid transparent;
  transition: background var(--ease), color var(--ease), border-color var(--ease);
}
.site-nav__link::before {
  content: counter(rail, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-cyan);
  opacity: .85;
}
.site-nav__link:hover { color: var(--color-cyan); background: rgba(0, 229, 255, .06); }
.site-nav__link[aria-current="page"] {
  color: var(--color-accent);
  background: linear-gradient(90deg, rgba(255, 107, 53, .18), transparent);
  border-inline-start-color: var(--color-accent);
}
.site-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  right: 12px;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  transform: rotate(45deg);
}

.header-cta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 16px;
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 800;
  border: 1px solid rgba(255, 255, 255, .2);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  transition: transform var(--ease), background var(--ease);
}
.header-cta:hover { background: var(--color-cyan); color: var(--color-bg); transform: translateY(-2px); }
.header-cta__text { font-size: 15px; }
.header-cta__code {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 6px;
  background: rgba(10, 31, 68, .18);
  letter-spacing: .08em;
}

.site-header__meta { display: flex; align-items: center; gap: 10px; margin-top: 16px; font-family: var(--font-mono); font-size: 10px; letter-spacing: .14em; color: var(--color-stone); text-transform: uppercase; }
.site-header__line { flex: 1; height: 1px; background: linear-gradient(90deg, var(--color-cyan), transparent); }

.site-progress { position: absolute; top: 0; right: 0; bottom: 0; width: 3px; z-index: 3; background: rgba(0, 229, 255, .12); pointer-events: none; }
.site-progress__bar { display: block; width: 100%; height: 0; background: linear-gradient(180deg, var(--color-cyan), var(--color-accent)); transition: height .1s linear, width .1s linear; }

.site-footer {
  position: relative;
  margin-top: 80px;
  padding: clamp(36px, 6vw, 72px) 0 24px;
  background: #071733;
  border-top: 1px solid rgba(0, 229, 255, .24);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-cyan));
}
.site-footer__grid {
  width: min(100% - 2 * var(--gutter), var(--container));
  margin-inline: auto;
  display: grid;
  gap: 32px;
  grid-template-columns: 1fr;
  align-items: start;
}
.site-footer__logo { font-family: var(--font-heading); font-size: 26px; line-height: 1.1; }
.site-footer__logo-link { color: var(--color-paper); }
.site-footer__logo-link:hover { color: var(--color-cyan); }
.site-footer__sub { margin-top: 6px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em; color: var(--color-cyan); text-transform: uppercase; }
.site-footer__about { margin-top: 14px; max-width: 38ch; color: var(--color-stone); font-size: 14px; line-height: 1.8; }
.site-footer__title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 8px;
  margin-bottom: 16px;
  font-family: var(--font-heading);
  font-size: 16px;
  letter-spacing: .1em;
  color: var(--color-accent);
  border-bottom: 1px solid rgba(255, 107, 53, .4);
}
.site-footer__title--sub { margin-top: 26px; border-bottom-color: rgba(198, 124, 91, .4); color: var(--color-clay); }
.site-footer__list { display: grid; gap: 10px; }
.site-footer__link { display: inline-flex; align-items: center; gap: 8px; color: var(--color-paper); font-size: 14px; }
.site-footer__link::before { content: "→"; color: var(--color-cyan); font-family: var(--font-mono); }
.site-footer__link:hover { color: var(--color-cyan); }
.site-footer__link[aria-current="page"] { color: var(--color-accent); }
.site-footer__text { color: var(--color-stone); font-size: 13px; }
.site-footer__note {
  border-left: 3px solid var(--color-clay);
  padding: 14px 16px;
  background: rgba(198, 124, 91, .08);
  align-self: start;
}
.site-footer__note-label { font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em; color: var(--color-clay); text-transform: uppercase; }
.site-footer__note-text { margin-top: 6px; font-size: 13px; color: var(--color-stone); }
.site-footer__bottom {
  width: min(100% - 2 * var(--gutter), var(--container));
  margin: 40px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(0, 229, 255, .16);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.site-footer__copy { font-family: var(--font-mono); font-size: 12px; color: var(--color-stone); }
.site-footer__trust { font-size: 12px; color: var(--color-stone); }

.site-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 900;
  padding: 10px 14px;
  background: var(--color-accent);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-weight: 800;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow);
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}
.site-top:hover { background: var(--color-cyan); }

@media (min-width: 960px) {
  body { margin-left: var(--header-w); }
  .site-footer__grid { grid-template-columns: 1.2fr .8fr .8fr .9fr; }
  .site-footer__bottom { flex-direction: row; align-items: center; justify-content: space-between; }
  .site-footer__trust { max-width: 66ch; text-align: right; }
}

@media (min-width: 700px) and (max-width: 959.98px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 959.98px) {
  .site-header {
    position: sticky;
    top: 0;
    inset: 0;
    width: 100%;
    border-right: 0;
    border-bottom: 1px solid rgba(0, 229, 255, .24);
  }
  .site-header__inner {
    height: auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    padding: 12px 16px;
  }
  .site-brand { flex: 1 1 auto; min-width: 0; margin-bottom: 0; }
  .site-nav-toggle {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    width: 48px;
    height: 48px;
    margin-left: auto;
    background: transparent;
    border: 1px solid rgba(0, 229, 255, .34);
    color: var(--color-paper);
    cursor: pointer;
  }
  .site-nav-toggle__bar { width: 18px; height: 2px; background: var(--color-cyan); transition: transform var(--ease), opacity var(--ease); }
  .site-nav-toggle__label { font-size: 9px; line-height: 1; letter-spacing: .1em; color: var(--color-paper); }
  .site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-of-type(1) { transform: translateY(6px) rotate(45deg); }
  .site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-of-type(2) { opacity: 0; }
  .site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-of-type(3) { transform: translateY(-6px) rotate(-45deg); }
  .site-nav { order: 3; flex: 1 0 100%; width: 100%; display: none; margin-top: 14px; border-top: 1px solid rgba(0, 229, 255, .16); padding-top: 10px; }
  .site-nav[data-open] { display: block; }
  .site-nav__list { margin-top: 0; }
  .site-nav__link { padding: 12px 8px; border-block-end: 1px solid rgba(245, 240, 230, .05); }
  .header-cta { order: 4; width: 100%; margin-top: 12px; }
  .site-header__meta { order: 5; width: 100%; margin-top: 14px; }
  .site-header::after { bottom: auto; top: 4px; right: 6px; }
  .site-progress { top: auto; bottom: 0; left: 0; right: 0; width: 100%; height: 3px; background: rgba(0, 229, 255, .12); }
  .site-progress__bar { width: 0; height: 100%; background: linear-gradient(90deg, var(--color-cyan), var(--color-accent)); }
}

/* 通用按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  background: transparent;
  border: 1px solid rgba(0, 229, 255, .45);
  color: var(--color-cyan);
  font-weight: 800;
  cursor: pointer;
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: background var(--ease), color var(--ease), border-color var(--ease);
}
.btn--primary { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-bg); }
.btn--ghost { border-color: rgba(0, 229, 255, .4); }
.btn:hover { background: var(--color-cyan); border-color: var(--color-cyan); color: var(--color-bg); }

/* 页面首屏标题组 */
.page-header { position: relative; padding: clamp(44px, 8vw, 100px) 0 var(--gutter); }
.page-header__kicker { font-family: var(--font-mono); font-size: 12px; letter-spacing: .18em; color: var(--color-cyan); text-transform: uppercase; }
.page-header__title {
  margin: 14px 0 20px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(46px, 9vw, 108px);
  line-height: .92;
  letter-spacing: .01em;
  color: var(--color-paper);
  text-transform: uppercase;
}
.page-header__lede {
  max-width: 60ch;
  padding-left: 18px;
  border-left: 3px solid var(--color-accent);
  color: var(--color-stone);
  font-size: clamp(16px, 2vw, 20px);
}

/* 内容分区 */
.section { padding: clamp(40px, 7vw, 90px) 0; }
.section--tint { background: rgba(0, 229, 255, .04); border-block: 1px solid rgba(0, 229, 255, .12); }
.section__head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.section__kicker { font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em; color: var(--color-cyan); text-transform: uppercase; }
.section__title { font-family: var(--font-heading); font-weight: 900; font-size: clamp(28px, 4vw, 48px); line-height: 1.05; color: var(--color-paper); }

/* 非对称网格 */
.layout-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--gutter); }
.layout-grid > * { grid-column: 1 / -1; }
@media (min-width: 700px) {
  .layout-grid__span-4 { grid-column: span 4; }
  .layout-grid__span-5 { grid-column: span 5; }
  .layout-grid__span-6 { grid-column: span 6; }
  .layout-grid__span-7 { grid-column: span 7; }
  .layout-grid__span-8 { grid-column: span 8; }
  .layout-grid__span-12 { grid-column: span 12; }
}

/* 印刷边框面板 */
.panel {
  position: relative;
  padding: clamp(20px, 3vw, 32px);
  background: rgba(10, 31, 68, .6);
  border: 1px solid rgba(0, 229, 255, .16);
  box-shadow: var(--shadow);
}
.panel::before { content: ""; position: absolute; top: -1px; left: 16px; width: 64px; height: 3px; background: var(--color-accent); }
.panel__label {
  position: absolute;
  top: -9px;
  left: 12px;
  padding: 0 8px;
  background: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--color-cyan);
  border: 1px solid rgba(0, 229, 255, .2);
  text-transform: uppercase;
}
.card {
  padding: clamp(18px, 3vw, 28px);
  background: rgba(10, 31, 68, .55);
  border: 1px solid rgba(0, 229, 255, .14);
  border-top: 3px solid var(--color-accent);
}

/* 数据指标 */
.metric { padding: 20px; background: linear-gradient(145deg, rgba(0, 229, 255, .08), rgba(10, 31, 68, .35)); border: 1px solid rgba(0, 229, 255, .22); }
.metric__value { margin: 0; font-family: var(--font-mono); font-size: clamp(34px, 5vw, 58px); line-height: 1; color: var(--color-cyan); }
.metric__label { margin-top: 10px; color: var(--color-stone); font-size: 14px; }

/* 标签与数据块 */
.tag { display: inline-block; padding: 3px 8px; border: 1px solid currentColor; font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--color-ice); }
.tag--warn { color: var(--color-clay); }
.tag--ok { color: var(--color-moss); }
.data-chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border: 1px solid rgba(0, 229, 255, .3);
  background: rgba(0, 229, 255, .04);
  color: var(--color-cyan);
  font-family: var(--font-mono);
  font-size: 12px;
}

/* 表格 */
.table-wrap { overflow-x: auto; border: 1px solid rgba(0, 229, 255, .16); background: rgba(10, 31, 68, .4); }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th, .data-table td { padding: 14px 16px; border-bottom: 1px solid rgba(245, 240, 230, .08); text-align: left; white-space: nowrap; }
.data-table th { font-family: var(--font-mono); font-size: 12px; letter-spacing: .08em; color: var(--color-cyan); background: rgba(0, 229, 255, .06); text-transform: uppercase; }
.data-table tr:last-child td { border-bottom: 0; }

/* 图片位 */
.image-frame {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 220px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(0, 229, 255, .2), transparent 50%),
    linear-gradient(315deg, rgba(255, 107, 53, .12), transparent 60%),
    var(--color-bg);
  border: 1px solid rgba(0, 229, 255, .2);
}
.image-frame::after {
  content: "IMG / 赛事影像位";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--color-stone);
  z-index: 0;
}
.image-frame img, .image-frame__img { position: relative; z-index: 1; width: 100%; height: 100%; object-fit: cover; }
.image-frame--tall { min-height: 420px; }
.image-frame--wide { min-height: 300px; }

/* 面包屑 */
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; font-family: var(--font-mono); font-size: 12px; color: var(--color-stone); }
.breadcrumbs__item:not(:last-child)::after { content: "/"; margin-left: 8px; color: var(--color-cyan); }
.breadcrumbs__link { color: var(--color-stone); }
.breadcrumbs__link:hover { color: var(--color-cyan); }
.breadcrumbs__current { color: var(--color-paper); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}