/* ==========================================================================
   九游体育安装 · 共享样式 /assets/site.css
   深空黑蓝夜色底层 + 活力橙唯一锚点 + 电光青数据线 + 冠军金荣誉 + 1px 精密网格
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body, h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video, canvas { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }
em { font-style: normal; }

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

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #050B1A;
  --navy: #0A1F44;
  --navy-2: #122E5C;
  --mist: #93A4C0;
  --white: #FFFFFF;
  --orange: #FF6B35;
  --orange-soft: #FF8F5E;
  --cyan: #00E5FF;
  --gold: #FFD700;
  --hairline: #1F3A63;
  --paper: #F4F6FB;
  --paper-line: #D5DEEB;
  --paper-text: #4A5C7A;

  --gutter: clamp(16px, 4vw, 56px);
  --wrap: 1360px;
  --head-h: 76px;
  --gap: clamp(16px, 2vw, 28px);

  --font-display: "Black Ops One", Impact, Haettenschweiler, "Noto Sans SC", "Source Han Sans SC", "PingFang SC", sans-serif;
  --font-body: "Inter", "Noto Sans SC", "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-data: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  background: var(--ink);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

@media (min-width: 1024px) {
  body { font-size: 17px; }
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
:focus:not(:focus-visible) { outline: none; }

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

/* ---------- 4. 布局容器 ---------- */
.wrap {
  width: min(var(--wrap), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}
.wrap--narrow {
  width: min(880px, calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

.section {
  position: relative;
  padding-block: clamp(56px, 9vw, 120px);
}
.section--tight { padding-block: clamp(32px, 5vw, 64px); }
.section--flush { padding-block: 0; }
.section--navy { background: var(--navy); }
.section--paper { background: var(--paper); color: var(--navy); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: clamp(16px, 2.4vw, 40px);
  margin-bottom: clamp(28px, 4vw, 56px);
}

.rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: var(--hairline);
}
.section--paper .rule { background: var(--paper-line); }

/* 网格背景层 */
.mesh { position: relative; isolation: isolate; }
.mesh::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--hairline) 1px, transparent 1px),
    linear-gradient(to bottom, var(--hairline) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: .55;
  -webkit-mask-image: radial-gradient(130% 90% at 18% 0%, #000 15%, transparent 78%);
  mask-image: radial-gradient(130% 90% at 18% 0%, #000 15%, transparent 78%);
}
.section--paper.mesh::before {
  background-image:
    linear-gradient(to right, var(--paper-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--paper-line) 1px, transparent 1px);
  opacity: .8;
}

/* ---------- 5. 标题层级 ---------- */
.t-d1, .t-d2, .t-d3 {
  font-family: var(--font-display);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -.02em;
  color: var(--white);
}
.t-d1 { font-size: clamp(3.25rem, 8.6vw, 7rem); line-height: .95; }
.t-d2 { font-size: clamp(2.25rem, 5.2vw, 3.9rem); line-height: 1; }
.t-d3 { font-size: clamp(1.5rem, 2.6vw, 2.25rem); line-height: 1.12; }

.section--paper .t-d1,
.section--paper .t-d2,
.section--paper .t-d3 { color: var(--navy); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--mist);
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  flex: 0 0 18px;
  background: var(--orange);
}
.section--paper .eyebrow { color: #5B6E8C; }

.muted { color: var(--mist); }
.accent { color: var(--orange); }
.num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}

/* ---------- 6. 正文容器 ---------- */
.prose {
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.75;
}
@media (min-width: 1024px) {
  .prose { font-size: 17px; }
}
.prose > * + * { margin-top: 1.15em; }
.prose h2, .prose h3 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -.01em;
  color: inherit;
}
.prose h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); }
.prose h3 { font-size: clamp(1.15rem, 1.8vw, 1.4rem); }
.prose a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(0, 229, 255, .45);
}
.prose a:hover { border-bottom-color: var(--cyan); }
.prose li { position: relative; padding-left: 22px; }
.prose li + li { margin-top: .5em; }
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .85em;
  width: 12px;
  height: 1px;
  background: var(--orange);
}
.prose code {
  font-family: var(--font-data);
  font-size: .9em;
  padding: 2px 6px;
  background: rgba(0, 229, 255, .12);
}
.section--paper .prose { color: var(--paper-text); }
.section--paper .prose h2,
.section--paper .prose h3 { color: var(--navy); }
.section--paper .prose a { color: #0A6E8A; border-bottom-color: rgba(10, 110, 138, .4); }

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 11px 22px;
  border: 1px solid var(--hairline);
  background: transparent;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}
.btn:hover { transform: translateY(-2px); }
.btn--sm { min-height: 38px; padding: 8px 16px; font-size: 14px; }

.btn--primary {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}
.btn--primary:hover {
  background: var(--orange-soft);
  border-color: var(--orange-soft);
  color: var(--ink);
}

.btn--outline { border-color: var(--mist); }
.btn--outline:hover { border-color: var(--cyan); color: var(--cyan); }

.btn--ghost {
  background: rgba(10, 31, 68, .4);
  border-color: var(--hairline);
}
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); }

.section--paper .btn--outline,
.section--paper .btn--ghost {
  border-color: #C7D2E4;
  color: var(--navy);
  background: transparent;
}
.section--paper .btn--outline:hover,
.section--paper .btn--ghost:hover { border-color: var(--orange); color: var(--orange); }

/* ---------- 8. 标签 / 卡片 / 数据 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid var(--hairline);
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--mist);
}
.tag--live {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}
.tag--gold {
  border-color: rgba(255, 215, 0, .5);
  color: var(--gold);
}
.section--paper .tag { border-color: #C7D2E4; color: var(--paper-text); }
.section--paper .tag--gold { border-color: rgba(185, 138, 0, .5); color: #8A6600; }

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.2vw, 30px);
  border: 1px solid var(--hairline);
  background: linear-gradient(180deg, rgba(18, 46, 92, .58) 0%, rgba(10, 31, 68, .22) 100%);
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease;
}
.card:hover,
.card:focus-within {
  transform: translateY(-4px);
  border-color: var(--cyan);
}
.card__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.1rem, 1.5vw, 1.35rem);
  line-height: 1.2;
  color: var(--white);
}
.card__meta {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--mist);
}
.card__body {
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist);
}
.section--paper .card {
  border-color: #C7D2E4;
  background: #FFFFFF;
}
.section--paper .card:hover { border-color: var(--orange); }
.section--paper .card__title { color: var(--navy); }
.section--paper .card__meta { color: #7B8CA8; }
.section--paper .card__body { color: var(--paper-text); }

.stat { display: flex; flex-direction: column; gap: 6px; }
.stat__value {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2rem, 4.6vw, 3.5rem);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--cyan);
}
.stat__label {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--mist);
}
.stat--accent .stat__value { color: var(--orange); }
.stat--gold .stat__value { color: var(--gold); }
.section--paper .stat__value { color: var(--navy); }
.section--paper .stat--gold .stat__value { color: #8A6600; }
.section--paper .stat__label { color: #7B8CA8; }

/* ---------- 9. 图片容器（页面阶段放入 <img> 即可） ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  min-height: 180px;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--hairline);
  background:
    radial-gradient(120% 100% at 82% 0%, rgba(0, 229, 255, .18), transparent 62%),
    linear-gradient(150deg, var(--navy-2) 0%, var(--ink) 100%);
}
.media img { width: 100%; height: 100%; object-fit: cover; }
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .6;
  mix-blend-mode: overlay;
  background: repeating-linear-gradient(to bottom, rgba(255, 255, 255, .06) 0 1px, transparent 1px 5px);
}
.media--wide { aspect-ratio: 21 / 9; }
.media--square { aspect-ratio: 1 / 1; }
.media--portrait { aspect-ratio: 3 / 4; }
.media--tall { aspect-ratio: 4 / 5; }
.media__cap {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 1;
  padding: 14px 16px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--white);
  background: linear-gradient(to top, rgba(5, 11, 26, .94), transparent);
}

/* ---------- 10. 网格工具 ---------- */
.grid { display: grid; gap: var(--gap); }
.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)); }

@media (max-width: 900px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 11. 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 20px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--mist);
}
.crumbs li { display: inline-flex; align-items: center; gap: 8px; }
.crumbs li + li::before { content: "/"; color: var(--hairline); }
.crumbs a { transition: color 160ms ease; }
.crumbs a:hover { color: var(--cyan); }
.crumbs [aria-current="page"] { color: var(--white); }
.section--paper .crumbs { color: #7B8CA8; }
.section--paper .crumbs [aria-current="page"] { color: var(--navy); }

/* ---------- 12. 头部 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  background-color: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 240ms ease, border-color 240ms ease;
}
.site-header.is-solid {
  background-color: rgba(10, 31, 68, .95);
  border-bottom-color: var(--hairline);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}
.site-header[data-open="true"] {
  background-color: var(--ink);
  border-bottom-color: var(--hairline);
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: 10px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--orange);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  transform: translateY(-200%);
  transition: transform 160ms ease;
}
.skip-link:focus { transform: translateY(0); }

.site-header__inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 32px);
  width: min(var(--wrap), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
  min-height: var(--head-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  min-height: 44px;
}
.brand__glyph {
  position: relative;
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  background: var(--orange);
  clip-path: polygon(0 0, 100% 0, 100% 58%, 58% 100%, 0 100%);
}
.brand__glyph::after {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1px solid rgba(5, 11, 26, .6);
}
.brand__text {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  line-height: 1;
  letter-spacing: .01em;
  color: var(--white);
  white-space: nowrap;
}
.brand__ver {
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .14em;
  line-height: 1;
  padding: 3px 5px 2px;
  background: var(--cyan);
  color: var(--ink);
}
.brand--footer .brand__text { font-size: 16px; }

.site-header__panel {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 36px);
  margin-left: auto;
}

.site-nav { display: block; }
.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.7vw, 28px);
}
.site-nav__item { display: block; }
.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 8px 2px;
  font-size: 15px;
  font-weight: 500;
  color: var(--mist);
  white-space: nowrap;
  transition: color 160ms ease;
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--orange);
  transition: right 220ms cubic-bezier(.2, .7, .2, 1);
}
.site-nav__link:hover { color: var(--white); }
.site-nav__link:hover::after { right: 0; }
.site-nav__link[aria-current="page"] { color: var(--white); }
.site-nav__link[aria-current="page"]::after { right: 0; }

.site-header__utility {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-left: clamp(10px, 1.6vw, 24px);
  border-left: 1px solid var(--hairline);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--hairline);
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--white);
}
.nav-toggle__bars {
  position: relative;
  width: 20px;
  height: 12px;
  flex: 0 0 20px;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--orange);
  transition: transform 220ms ease, top 220ms ease, bottom 220ms ease;
}
.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }
.site-header[data-open="true"] .nav-toggle__bars::before { top: 5px; transform: rotate(45deg); }
.site-header[data-open="true"] .nav-toggle__bars::after { bottom: 5px; transform: rotate(-45deg); }

.scroll-meter {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  overflow: hidden;
  pointer-events: none;
}
.scroll-meter__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--orange), var(--cyan));
}

body.is-nav-open { overflow: hidden; }

@media (max-width: 980px) {
  :root { --head-h: 64px; }

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

  .site-header__panel {
    position: fixed;
    inset: var(--head-h) 0 0 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: clamp(20px, 5vw, 36px) var(--gutter) calc(var(--gutter) + 24px);
    background: var(--ink);
    border-top: 1px solid var(--hairline);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 200ms ease, transform 200ms ease, visibility 200ms;
  }
  .site-header[data-open="true"] .site-header__panel {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .site-nav { width: 100%; }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }
  .site-nav__item { border-bottom: 1px solid var(--hairline); }
  .site-nav__item:first-child { border-top: 1px solid var(--hairline); }
  .site-nav__link {
    display: block;
    width: 100%;
    padding: 15px 2px;
    font-family: var(--font-display);
    font-weight: 900;
    font-size: clamp(1.4rem, 6vw, 2rem);
    line-height: 1.05;
    color: var(--white);
  }
  .site-nav__link::after { display: none; }
  .site-nav__link[aria-current="page"] { color: var(--orange); }

  .site-header__utility {
    margin-top: 28px;
    padding-left: 0;
    border-left: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .site-header__utility .btn { width: 100%; min-height: 48px; font-size: 15px; }
}

/* ---------- 13. 页脚 ---------- */
.site-footer {
  position: relative;
  background: var(--ink);
  border-top: 1px solid var(--hairline);
  color: var(--mist);
  font-size: 14px;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: min(320px, 42%);
  height: 2px;
  background: linear-gradient(90deg, var(--orange), var(--cyan));
}

.site-footer__inner {
  width: min(var(--wrap), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
  padding-block: clamp(36px, 4.6vw, 64px);
}

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(200px, 1fr) minmax(0, 2.6fr);
  gap: clamp(24px, 4vw, 64px);
  padding-bottom: clamp(24px, 3vw, 40px);
  border-bottom: 1px solid var(--hairline);
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}
.site-footer__note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
  max-width: 30ch;
}

.site-footer__cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(18px, 2.4vw, 36px);
}
.site-footer__col { min-width: 0; }
.site-footer__col-title {
  margin-bottom: 14px;
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--white);
}
.site-footer__list { display: flex; flex-direction: column; gap: 2px; }
.site-footer__link {
  display: inline-block;
  padding: 5px 0;
  font-size: 14px;
  color: var(--mist);
  transition: color 160ms ease, transform 160ms ease;
}
.site-footer__link:hover { color: var(--cyan); transform: translateX(3px); }

.site-footer__legal {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: clamp(20px, 2.4vw, 30px);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}
.site-footer__copy {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .04em;
  color: #6C7E9B;
}

@media (max-width: 900px) {
  .site-footer__top { grid-template-columns: minmax(0, 1fr); }
  .site-footer__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 20px;
  }
  .site-footer__note { max-width: 46ch; }
}

/* ---------- 14. 显现动效 ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 520ms ease, transform 520ms cubic-bezier(.2, .7, .2, 1);
  transition-delay: calc(var(--i, 0) * 60ms);
  will-change: opacity, transform;
}
html.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 15. 无障碍 / 降级动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    transition-delay: 0ms !important;
  }
  html.js [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
  .btn:hover,
  .card:hover,
  .card:focus-within,
  .site-footer__link:hover { transform: none; }
}