/* =========================================================
   A8体育 · 共享站点套件 /assets/site.css
   深墨绿画布 · 荧光青索引 · 活力橙角标
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background: #071A14;
}

body {
  margin: 0;
  background: var(--a8-bg);
  color: var(--a8-ink);
  font-family: var(--a8-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, p, figure, blockquote, ol, ul, dl, dd { margin: 0; }
ol, ul { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
h1, h2, h3, h4 { line-height: 1.15; font-weight: 800; letter-spacing: -0.01em; }

:root {
  --a8-bg: #071A14;
  --a8-bg-2: #0C2A20;
  --a8-card: #123B2C;
  --a8-line: #1A5140;
  --a8-cyan: #35F2D0;
  --a8-teal: #1FA88F;
  --a8-orange: #FF6B2C;
  --a8-ink: #F3F1E7;
  --a8-ink-2: #C9C7BA;
  --a8-grid: rgba(243, 241, 231, 0.12);
  --a8-amber: #FFC24B;

  --a8-sans: 'Noto Sans SC', 'Source Han Sans SC', system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --a8-mono: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, 'Courier New', monospace;

  --a8-ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --a8-shell: 1320px;
  --a8-rail: 72px;
  --a8-radius: 2px;
  --a8-ticks: repeat(2, minmax(0, 1fr));
}

::selection {
  background: var(--a8-cyan);
  color: #04120D;
}

:focus-visible {
  outline: 2px solid var(--a8-cyan);
  outline-offset: 3px;
  border-radius: var(--a8-radius);
}

/* ---------- 骨架 ---------- */

.a8-shell {
  width: 100%;
  max-width: var(--a8-shell);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 40px);
}

.a8-main { display: block; }

.a8-section { padding-block: clamp(40px, 7vw, 88px); }

.a8-hr {
  height: 1px;
  border: 0;
  margin: 0;
  background: var(--a8-line);
}

/* ---------- 跳过链接 ---------- */

.a8-skip {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 300;
  padding: 10px 18px;
  background: var(--a8-cyan);
  color: #04120D;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: var(--a8-radius);
  transform: translateY(-180%);
  transition: transform 0.22s var(--a8-ease);
}

.a8-skip:focus,
.a8-skip:focus-visible {
  transform: translateY(0);
}

/* ---------- 滚动进度 ---------- */

.a8-progress {
  position: fixed;
  inset-block-start: 0;
  inset-inline-start: 0;
  width: 100%;
  height: 2px;
  background: var(--a8-cyan);
  transform: scaleX(0);
  transform-origin: 0 50%;
  z-index: 200;
  pointer-events: none;
}

/* =========================================================
   头部
   ========================================================= */

.a8-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(7, 26, 20, 0.94);
  border-bottom: 1px solid var(--a8-line);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

/* 状态带 */

.a8-header__utility {
  background: var(--a8-bg-2);
  border-bottom: 1px solid var(--a8-line);
}

.a8-header__utility-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 38px;
}

.a8-header__ticker {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  font-family: var(--a8-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  line-height: 1.4;
  color: var(--a8-ink-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.a8-dot {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--a8-cyan);
  box-shadow: 0 0 0 3px rgba(53, 242, 208, 0.16);
  animation: a8-pulse 2.6s var(--a8-ease) infinite;
}

@keyframes a8-pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(53, 242, 208, 0.16); }
  50%      { box-shadow: 0 0 0 6px rgba(53, 242, 208, 0.04); }
}

.a8-header__quick {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.a8-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.12em;
  border-radius: 999px;
  border: 1px solid var(--a8-line);
  color: var(--a8-ink-2);
  transition: transform 0.2s var(--a8-ease), border-color 0.2s var(--a8-ease), background-color 0.2s var(--a8-ease);
}

.a8-chip--orange {
  color: var(--a8-orange);
  border-color: rgba(255, 107, 44, 0.55);
  background: rgba(255, 107, 44, 0.09);
}

.a8-chip--cyan {
  color: var(--a8-cyan);
  border-color: rgba(53, 242, 208, 0.5);
  background: rgba(53, 242, 208, 0.09);
}

@media (hover: hover) {
  .a8-chip:hover { transform: translateY(-1px); }
  .a8-chip--orange:hover { background: rgba(255, 107, 44, 0.18); }
  .a8-chip--cyan:hover { background: rgba(53, 242, 208, 0.18); }
}

/* 品牌 + 导航行 */

.a8-header__main {
  display: flex;
  align-items: center;
  gap: clamp(10px, 3vw, 36px);
  min-height: 66px;
}

.a8-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.a8-brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  font-family: var(--a8-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #04120D;
  background: var(--a8-cyan);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
  transition: background-color 0.24s var(--a8-ease);
}

.a8-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.a8-brand__cn {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--a8-ink);
}

.a8-brand__en {
  font-family: var(--a8-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--a8-ink-2);
}

@media (hover: hover) {
  .a8-brand:hover .a8-brand__mark { background: var(--a8-orange); }
  .a8-brand:hover .a8-brand__cn { color: var(--a8-cyan); }
}

/* 移动导航按钮 */

.a8-navtoggle {
  display: none;
  align-items: center;
  gap: 8px;
  margin-inline-start: auto;
  padding: 9px 12px;
  border: 1px solid var(--a8-line);
  border-radius: var(--a8-radius);
  font-family: var(--a8-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--a8-ink);
  transition: color 0.2s var(--a8-ease), border-color 0.2s var(--a8-ease);
}

.a8-navtoggle__bars {
  display: grid;
  gap: 3px;
  width: 16px;
}

.a8-navtoggle__bars i {
  display: block;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.24s var(--a8-ease), opacity 0.2s var(--a8-ease);
}

.a8-navtoggle__label {
  font-family: var(--a8-sans);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.a8-navtoggle[aria-expanded="true"] {
  color: var(--a8-cyan);
  border-color: var(--a8-cyan);
}

.a8-navtoggle[aria-expanded="true"] .a8-navtoggle__bars i:nth-child(1) {
  transform: translateY(4.5px) rotate(45deg);
}

.a8-navtoggle[aria-expanded="true"] .a8-navtoggle__bars i:nth-child(2) {
  opacity: 0;
}

.a8-navtoggle[aria-expanded="true"] .a8-navtoggle__bars i:nth-child(3) {
  transform: translateY(-4.5px) rotate(-45deg);
}

/* 导航 */

.a8-nav { display: none; }

.a8-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.a8-nav__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 10px 10px;
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--a8-ink-2);
  transition: color 0.2s var(--a8-ease);
}

.a8-nav__num {
  font-family: var(--a8-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: rgba(201, 199, 186, 0.45);
  transition: color 0.2s var(--a8-ease);
}

.a8-nav__link::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 2px;
  height: 2px;
  background: var(--a8-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.24s var(--a8-ease);
}

.a8-nav__link[aria-current="page"] { color: var(--a8-cyan); }
.a8-nav__link[aria-current="page"] .a8-nav__num { color: var(--a8-cyan); }
.a8-nav__link[aria-current="page"]::after { transform: scaleX(1); }

@media (hover: hover) {
  .a8-nav__link:hover { color: var(--a8-ink); }
  .a8-nav__link:hover .a8-nav__num { color: var(--a8-ink-2); }
  .a8-nav__link:hover::after { transform: scaleX(1); }
}

@media (min-width: 901px) {
  .a8-nav {
    display: block;
    margin-inline-start: auto;
  }
}

/* =========================================================
   页脚
   ========================================================= */

.a8-footer {
  margin-top: clamp(32px, 6vw, 72px);
  padding-block: clamp(36px, 6vw, 64px) 0;
  background: var(--a8-bg-2);
  border-top: 1px solid var(--a8-line);
}

/* 安卓端导航卡 */

.a8-android {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px clamp(12px, 2.5vw, 26px);
  margin-bottom: clamp(28px, 5vw, 48px);
  padding: clamp(16px, 3vw, 26px);
  background: rgba(53, 242, 208, 0.055);
  border: 1px solid rgba(53, 242, 208, 0.42);
  border-radius: var(--a8-radius);
  transition: border-color 0.24s var(--a8-ease), background-color 0.24s var(--a8-ease);
}

.a8-android__tag {
  flex: 0 0 auto;
  padding: 4px 9px;
  font-family: var(--a8-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #1A0B04;
  background: var(--a8-orange);
  border-radius: var(--a8-radius);
}

.a8-android__title {
  font-size: clamp(16px, 2.2vw, 20px);
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--a8-ink);
}

.a8-android__text {
  flex: 1 1 220px;
  min-width: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--a8-ink-2);
}

.a8-android__go {
  flex: 0 0 auto;
  font-family: var(--a8-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--a8-cyan);
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(53, 242, 208, 0.5);
}

@media (hover: hover) {
  .a8-android:hover {
    border-color: var(--a8-cyan);
    background: rgba(53, 242, 208, 0.1);
  }
}

/* 目录网格 */

.a8-footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 0.8fr));
  gap: clamp(24px, 4vw, 48px);
  padding-bottom: clamp(24px, 4vw, 40px);
  border-bottom: 1px solid var(--a8-line);
}

.a8-brand--footer .a8-brand__mark { width: 28px; height: 28px; font-size: 12px; }
.a8-brand--footer .a8-brand__cn { font-size: 14px; }
.a8-brand--footer .a8-brand__en { font-size: 9px; letter-spacing: 0.16em; }

.a8-footer__summary {
  margin-top: 14px;
  max-width: 36ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--a8-ink-2);
}

.a8-footer__head {
  margin-bottom: 14px;
  font-family: var(--a8-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--a8-cyan);
}

.a8-footer__links {
  display: grid;
  gap: 9px;
}

.a8-footer__link {
  display: inline-block;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--a8-ink-2);
  transition: color 0.2s var(--a8-ease), padding-inline-start 0.2s var(--a8-ease);
}

@media (hover: hover) {
  .a8-footer__link:hover {
    color: var(--a8-ink);
    padding-inline-start: 5px;
  }
}

/* 联系信息 */

.a8-footer__contact {
  display: flex;
  flex-wrap: wrap;
  gap: 18px clamp(24px, 4vw, 48px);
  padding-block: clamp(20px, 3.5vw, 32px);
  border-bottom: 1px solid var(--a8-line);
}

.a8-footer__contact-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

.a8-footer__contact-key {
  font-family: var(--a8-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(201, 199, 186, 0.62);
}

.a8-footer__contact-val {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--a8-ink);
}

/* 复制按钮 */

.a8-copy {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 2px 0;
  font-family: var(--a8-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--a8-ink);
  border-bottom: 1px dashed rgba(53, 242, 208, 0.45);
  transition: color 0.2s var(--a8-ease), border-color 0.2s var(--a8-ease);
}

.a8-copy__hint {
  padding: 2px 6px;
  font-family: var(--a8-sans);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--a8-cyan);
  background: rgba(53, 242, 208, 0.12);
  border-radius: var(--a8-radius);
  transition: color 0.2s var(--a8-ease), background-color 0.2s var(--a8-ease);
}

.a8-copy[data-copied="true"] { border-bottom-color: rgba(255, 194, 75, 0.5); }
.a8-copy[data-copied="true"] .a8-copy__hint {
  color: var(--a8-amber);
  background: rgba(255, 194, 75, 0.16);
}

@media (hover: hover) {
  .a8-copy:hover { color: var(--a8-cyan); }
}

/* 备案行 */

.a8-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  padding-block: 20px 26px;
  font-family: var(--a8-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: rgba(201, 199, 186, 0.68);
}

.a8-footer__meta { color: rgba(201, 199, 186, 0.5); }

/* =========================================================
   通用组件
   ========================================================= */

.a8-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--a8-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--a8-cyan);
}

.a8-label::before {
  content: "";
  width: 16px;
  height: 1px;
  background: currentColor;
}

.a8-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.4;
  border: 1px solid var(--a8-cyan);
  border-radius: var(--a8-radius);
  background: var(--a8-cyan);
  color: #04120D;
  transition: transform 0.2s var(--a8-ease), background-color 0.2s var(--a8-ease),
              border-color 0.2s var(--a8-ease), color 0.2s var(--a8-ease);
}

.a8-btn--ghost {
  background: transparent;
  color: var(--a8-ink);
  border-color: var(--a8-line);
}

.a8-btn--orange {
  background: var(--a8-orange);
  border-color: var(--a8-orange);
  color: #1A0B04;
}

@media (hover: hover) {
  .a8-btn:hover { transform: translateY(-2px); }
  .a8-btn--ghost:hover { border-color: var(--a8-cyan); color: var(--a8-cyan); }
}

.a8-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  font-family: var(--a8-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--a8-ink-2);
}

.a8-breadcrumb a { transition: color 0.2s var(--a8-ease); }
.a8-breadcrumb a:hover { color: var(--a8-cyan); }
.a8-breadcrumb__sep { color: rgba(26, 81, 64, 0.95); }

.a8-grid {
  display: grid;
  gap: clamp(14px, 2vw, 24px);
}

.a8-grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

.a8-grid--auto {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
}

.a8-card {
  position: relative;
  padding: clamp(16px, 2.4vw, 26px);
  background: var(--a8-card);
  border: 1px solid var(--a8-line);
  border-radius: var(--a8-radius);
  transition: border-color 0.24s var(--a8-ease), box-shadow 0.24s var(--a8-ease),
              transform 0.24s var(--a8-ease);
}

@media (hover: hover) {
  .a8-card:hover {
    border-color: rgba(53, 242, 208, 0.5);
    box-shadow: 0 18px 34px -22px rgba(0, 0, 0, 0.95);
  }
}

/* 图片容器基础规则（页面阶段在此放 <img>） */

.a8-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--a8-card);
  border: 1px solid var(--a8-line);
  border-radius: var(--a8-radius);
}

.a8-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.a8-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(0deg, var(--a8-grid) 0 1px, transparent 1px 32px),
    repeating-linear-gradient(90deg, var(--a8-grid) 0 1px, transparent 1px 32px);
  opacity: 0.55;
}

.a8-media--slant { clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%); }
.a8-media--wide { aspect-ratio: 21 / 9; }

.a8-rail {
  writing-mode: vertical-rl;
  font-family: var(--a8-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(201, 199, 186, 0.55);
  -webkit-user-select: none;
  user-select: none;
}

.a8-num {
  font-family: var(--a8-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

/* ---------- 滚动显现 ---------- */

[data-js="true"] [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s var(--a8-ease), transform 0.6s var(--a8-ease);
  transition-delay: var(--a8-reveal-delay, 0ms);
  will-change: opacity, transform;
}

[data-js="true"] [data-reveal].is-in {
  opacity: 1;
  transform: none;
  will-change: auto;
}

/* =========================================================
   响应式
   ========================================================= */

@media (max-width: 900px) {
  .a8-navtoggle { display: inline-flex; }

  .a8-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: calc(100vh - 96px);
    overflow-y: auto;
    padding: 6px clamp(16px, 4vw, 40px) 16px;
    background: var(--a8-bg-2);
    border-top: 1px solid var(--a8-line);
    border-bottom: 1px solid var(--a8-line);
    box-shadow: 0 30px 50px -24px rgba(0, 0, 0, 0.85);
  }

  .a8-nav[data-open="true"] { display: block; }

  .a8-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .a8-nav__link {
    padding: 15px 10px;
    font-size: 15px;
    border-bottom: 1px solid rgba(26, 81, 64, 0.65);
  }

  .a8-nav__item:last-child .a8-nav__link { border-bottom: 0; }

  .a8-nav__link::after {
    left: 0;
    right: auto;
    top: 0;
    bottom: 0;
    width: 3px;
    height: auto;
    transform: scaleY(0);
    transform-origin: center;
  }

  .a8-nav__link[aria-current="page"] {
    background: rgba(53, 242, 208, 0.08);
  }

  .a8-nav__link[aria-current="page"]::after { transform: scaleY(1); }

  @media (hover: hover) {
    .a8-nav__link:hover::after { transform: scaleY(1); }
  }

  .a8-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 24px;
  }

  .a8-footer__brand { grid-column: 1 / -1; }

  .a8-grid--12 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 640px) {
  .a8-header__ticker { font-size: 10px; letter-spacing: 0.02em; }
  .a8-header__quick { gap: 6px; }
  .a8-chip { padding: 3px 8px; font-size: 10px; letter-spacing: 0.06em; }
  .a8-header__main { min-height: 60px; }
  .a8-brand__mark { width: 30px; height: 30px; font-size: 12px; }
  .a8-brand__cn { font-size: 14.5px; }
  .a8-brand__en { font-size: 9px; }

  .a8-android { flex-direction: column; align-items: flex-start; }
  .a8-android__text { flex: 0 0 auto; }

  .a8-footer__legal { justify-content: flex-start; }
}

@media (max-width: 480px) {
  .a8-footer__grid { grid-template-columns: minmax(0, 1fr); }
  .a8-header__ticker span:last-child {
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
}

/* =========================================================
   无障碍 / 动效降级
   ========================================================= */

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

  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  [data-js="true"] [data-reveal],
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .a8-nav__link::after { transition: none !important; }
}