/* ==========================================================================
   HO体育安卓赛场 · 共享样式 /assets/site.css
   夜场黑绿底 + 技术蓝图网格 + 印刷标签 + 单一荧光青强调
   ========================================================================== */

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

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

body,
h1, h2, h3, h4, h5, p, ul, ol, figure, blockquote, dl, dd { margin: 0; }

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

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

button, input, select, textarea { font: inherit; color: inherit; }

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

[hidden] { display: none !important; }

/* 2. 设计令牌 --------------------------------------------------------------- */
:root {
  --ink-900: #06140F;
  --ink-800: #0B2A1E;
  --ink-700: #145C3B;
  --cyan: #38F2D0;
  --cyan-soft: #5FFBDD;
  --cyan-dim: #1FA896;
  --silver-100: #EEF4F2;
  --silver-300: #C9D5D1;
  --orange: #FF5A36;
  --amber: #FFB020;
  --paper: #F4F1E8;

  --line: rgba(201, 213, 209, 0.16);
  --line-2: rgba(201, 213, 209, 0.30);
  --line-cyan: rgba(56, 242, 208, 0.45);

  --font-head: "Barlow Condensed", "Oswald", "Noto Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "Roboto Mono", monospace;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;

  --fs-display: clamp(2.6rem, 6vw, 5rem);
  --fs-h1: clamp(2rem, 4vw, 3.4rem);
  --fs-h2: clamp(1.4rem, 2.6vw, 2.2rem);
  --fs-h3: 1.1rem;
  --fs-body: 1rem;
  --fs-cap: 0.78rem;

  --maxw: 1440px;
  --gap: 20px;
  --shadow-card: 0 10px 26px rgba(0, 0, 0, 0.45);
  --ease: 180ms ease;
}

/* 3. 基础与中文排版 --------------------------------------------------------- */
body {
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(1100px 620px at 10% -12%, rgba(20, 92, 59, 0.50), transparent 62%),
    radial-gradient(820px 520px at 100% 4%, rgba(31, 168, 150, 0.18), transparent 58%),
    var(--ink-900);
  color: var(--silver-100);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: 1.72;
  letter-spacing: 0.01em;
  text-rendering: optimizeLegibility;
}

/* 技术蓝图网格层（位于内容之下） */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(201, 213, 209, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 213, 209, 0.045) 1px, transparent 1px);
  background-size: 60px 60px;
}

h1, h2, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: 0.015em;
  color: var(--silver-100);
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-family: var(--font-body); font-size: var(--fs-h3); font-weight: 700; line-height: 1.4; color: var(--silver-100); }
h4 { font-size: 1rem; letter-spacing: 0.06em; }

p { overflow-wrap: anywhere; }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

strong { color: var(--silver-100); font-weight: 700; }

::selection { background: var(--cyan); color: var(--ink-900); }

/* 4. 布局工具 -------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 40px);
}

.section {
  position: relative;
  padding-block: clamp(40px, 6vw, 88px);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px 18px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-6 { grid-column: span 6; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

.prose { max-width: 70ch; color: var(--silver-300); }
.prose p { margin-bottom: 1em; }
.prose h2, .prose h3 { margin: 1.6em 0 0.5em; }
.prose ul { margin: 0 0 1em; }
.prose li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 0.4em;
}
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--cyan-dim);
}
.prose a { color: var(--cyan); border-bottom: 1px solid var(--line-cyan); }

/* 5. 通用组件 -------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 11px 20px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--silver-100);
  background: transparent;
  border: 1px solid var(--line-2);
  cursor: pointer;
  transition: background var(--ease), border-color var(--ease), color var(--ease), transform var(--ease);
}
.btn-primary {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-900);
  font-weight: 700;
}
.btn-primary:hover { background: var(--cyan-soft); border-color: var(--cyan-soft); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(20, 92, 59, 0.42); }
.btn:hover { transform: translateY(-2px); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--silver-300);
  border: 1px solid var(--line-2);
}
.tag--cyan { color: var(--cyan); border-color: var(--line-cyan); }
.tag--amber { color: var(--amber); border-color: rgba(255, 176, 32, 0.45); }
.tag--orange { color: var(--orange); border-color: rgba(255, 90, 54, 0.45); }

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-block: 14px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--silver-300);
}
.breadcrumbs li { display: flex; align-items: center; }
.breadcrumbs li::after { content: "/"; margin-left: 8px; color: var(--cyan-dim); }
.breadcrumbs li:last-child::after { content: ""; }
.breadcrumbs a:hover { color: var(--cyan); }

.stack-card {
  position: relative;
  padding: clamp(16px, 2.4vw, 26px);
  background: rgba(11, 42, 30, 0.74);
  border: 1px solid var(--line-2);
  box-shadow: var(--shadow-card);
}
.stack-card--paper {
  background: var(--paper);
  color: var(--ink-900);
  border-color: rgba(6, 20, 15, 0.28);
}
.stack-card--paper h2, .stack-card--paper h3 { color: var(--ink-900); }

/* 图片容器：页面阶段放入 <img> 即可 */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line-2);
  background: linear-gradient(135deg, var(--ink-700), var(--ink-900));
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 44%, rgba(6, 20, 15, 0.78));
}
.media-cap {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 10px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--silver-100);
}

/* 6. 页头 ------------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--ink-900);
  border-bottom: 1px solid var(--line-2);
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 120;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--cyan);
  color: var(--ink-900);
  transition: top var(--ease);
}
.skip-link:focus { top: 8px; }

/* 上沿刻度带 */
.hdr-strip {
  background: linear-gradient(90deg, var(--ink-800), var(--ink-900) 72%);
  border-bottom: 1px solid var(--line);
}
.hdr-strip-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 32px;
  font-size: var(--fs-cap);
}
.hdr-coord {
  color: var(--cyan-dim);
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
}
.hdr-strip-right { display: flex; align-items: center; gap: 10px; }
.status-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--amber);
  border: 1px solid rgba(255, 176, 32, 0.45);
}
.status-tag::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--amber);
  animation: ho-pulse 2.6s ease-in-out infinite;
}
.lang-tag {
  padding: 2px 8px;
  font-size: 0.68rem;
  color: var(--silver-300);
  border: 1px solid var(--line);
}

/* 左右分置导航条 */
.hdr-bar { position: relative; background: var(--ink-900); }
.hdr-bar-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 66px;
  padding-block: 8px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  color: var(--cyan);
  background: linear-gradient(140deg, var(--ink-700), var(--ink-800));
  border: 1px solid var(--line-cyan);
  transition: border-color var(--ease), color var(--ease);
}
.brand-mark svg { width: 20px; height: 20px; }
.brand:hover .brand-mark { border-color: var(--cyan); }
.brand-text { display: flex; flex-direction: column; line-height: 1.12; }
.brand-name {
  font-family: var(--font-head);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--silver-100);
}
.brand-line {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-dim);
}

.nav { margin-left: auto; }
.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  counter-reset: nav;
}
.nav-link {
  display: block;
  padding: 9px 12px;
  font-family: var(--font-mono);
  font-size: 0.79rem;
  letter-spacing: 0.05em;
  color: var(--silver-300);
  border: 1px solid transparent;
  white-space: nowrap;
  transition: color var(--ease), background var(--ease), border-color var(--ease);
}
.nav-link::before {
  counter-increment: nav;
  content: counter(nav, decimal-leading-zero);
  margin-right: 6px;
  font-size: 0.6rem;
  color: var(--cyan-dim);
}
.nav-link:hover {
  color: var(--cyan);
  background: rgba(20, 92, 59, 0.42);
  border-color: var(--line-2);
}
.nav-link[aria-current="page"] {
  color: var(--cyan);
  background: rgba(20, 92, 59, 0.62);
  border-color: var(--line-cyan);
  box-shadow: inset 0 -2px 0 var(--cyan);
}

.hdr-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}
.index-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--silver-100);
  background: transparent;
  border: 1px solid var(--line-2);
  cursor: pointer;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}
.index-btn::before {
  content: "";
  width: 8px;
  height: 8px;
  border: 1px solid currentColor;
}
.index-btn:hover { border-color: var(--cyan); color: var(--cyan); }
.index-btn[aria-expanded="true"] {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(20, 92, 59, 0.5);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--silver-100);
  background: transparent;
  border: 1px solid var(--line-2);
  cursor: pointer;
  transition: color var(--ease), border-color var(--ease);
}
.nav-toggle-bars {
  display: inline-block;
  width: 18px;
  height: 12px;
  background:
    linear-gradient(currentColor, currentColor) 0 0 / 100% 2px no-repeat,
    linear-gradient(currentColor, currentColor) 0 5px / 100% 2px no-repeat,
    linear-gradient(currentColor, currentColor) 0 10px / 100% 2px no-repeat;
}
.nav-toggle[aria-expanded="true"] { color: var(--cyan); border-color: var(--cyan); }

/* 索引面板 */
.hdr-index {
  display: none;
  background: linear-gradient(180deg, var(--ink-800), var(--ink-900));
  border-top: 1px solid var(--line);
}
.site-header[data-index-open] .hdr-index { display: block; }
.hdr-index-inner {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  padding-block: 16px;
}
.idx-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 13px 14px;
  color: var(--silver-300);
  border: 1px solid var(--line);
  background: rgba(6, 20, 15, 0.4);
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}
.idx-link:hover {
  color: var(--silver-100);
  border-color: var(--line-cyan);
  background: rgba(20, 92, 59, 0.45);
}
.idx-num { font-size: 0.7rem; color: var(--cyan); }
.idx-label { font-size: 0.9rem; }

/* 移动端状态与快捷入口面板 */
.hdr-utility {
  display: none;
  background: var(--ink-800);
  border-top: 1px solid var(--line);
}
.hdr-utility-inner {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-block: 14px;
}
.utility-line {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
}
.utility-links { display: flex; flex-wrap: wrap; gap: 8px; }
.utility-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 12px;
  font-size: 0.82rem;
  color: var(--silver-100);
  border: 1px solid var(--line-2);
  transition: color var(--ease), border-color var(--ease);
}
.utility-link:hover { color: var(--cyan); border-color: var(--cyan); }

/* 滚动进度细线 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 80;
  height: 2px;
  pointer-events: none;
  background: rgba(201, 213, 209, 0.12);
}
.scroll-progress-bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan-dim), var(--cyan));
  transition: transform 120ms linear;
}

/* 7. 页脚 ------------------------------------------------------------------ */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: clamp(48px, 7vw, 96px);
  background: linear-gradient(180deg, var(--ink-900), var(--ink-800));
  border-top: 1px solid var(--line-2);
}
.ftr-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(4, minmax(0, 1fr));
  gap: 28px;
  padding-block: clamp(36px, 5vw, 56px) 32px;
}
.ftr-brand { display: flex; flex-direction: column; gap: 12px; }
.ftr-logo {
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--silver-100);
}
.ftr-logo::after {
  content: "";
  display: block;
  width: 46px;
  height: 2px;
  margin-top: 9px;
  background: var(--cyan);
}
.ftr-summary { max-width: 34ch; font-size: 0.9rem; color: var(--silver-300); }
.ftr-meta { font-size: 0.78rem; color: var(--cyan-dim); }

.ftr-col { display: flex; flex-direction: column; gap: 12px; }
.ftr-col-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}
.ftr-links { display: flex; flex-direction: column; gap: 7px; }
.ftr-link {
  font-size: 0.86rem;
  color: var(--silver-300);
  transition: color var(--ease);
}
.ftr-link:hover { color: var(--cyan); }
.ftr-static {
  font-size: 0.8rem;
  color: var(--silver-300);
}
.ftr-static.mono { font-size: 0.76rem; letter-spacing: 0.03em; }

.ftr-base { border-top: 1px solid var(--line); }
.ftr-base-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-block: 18px;
  font-size: 0.78rem;
  color: var(--silver-300);
}
.ftr-copy { font-size: 0.78rem; }
.legal-links { display: flex; flex-wrap: wrap; gap: 16px; }
.legal-link {
  color: var(--silver-300);
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}
.legal-link:hover { color: var(--cyan); border-bottom-color: var(--cyan); }

/* 8. 悬浮球快捷入口 -------------------------------------------------------- */
.quick-dock {
  position: fixed;
  right: clamp(12px, 3vw, 28px);
  bottom: clamp(12px, 3vw, 28px);
  z-index: 70;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}
.dock-toggle {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  color: var(--cyan);
  background: var(--ink-800);
  border: 1px solid var(--cyan-dim);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-card);
  transition: border-color var(--ease), transform var(--ease);
}
.dock-toggle:hover { border-color: var(--cyan); transform: translateY(-3px); }
.dock-toggle[aria-expanded="true"] { border-color: var(--cyan); }
.dock-toggle-mark { font-size: 0.78rem; letter-spacing: 0.06em; }

.dock-panel {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  background: var(--ink-800);
  border: 1px solid var(--line-2);
  box-shadow: var(--shadow-card);
}
.quick-dock[data-dock-open] .dock-panel { display: flex; }
.dock-link {
  display: block;
  min-width: 116px;
  padding: 10px 12px;
  font-family: var(--font-body);
  font-size: 0.84rem;
  text-align: left;
  color: var(--silver-100);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}
.dock-link:hover {
  color: var(--cyan);
  border-color: var(--line-cyan);
  background: var(--ink-700);
}

/* 9. 动效协议 -------------------------------------------------------------- */
@keyframes ho-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 500ms ease, transform 500ms ease;
}
[data-reveal].is-visible { opacity: 1; transform: none; }

/* 10. 焦点与无障碍 --------------------------------------------------------- */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

@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-reveal] { opacity: 1; transform: none; }
  .btn:hover,
  .dock-toggle:hover { transform: none; }
}

/* 11. 响应式 --------------------------------------------------------------- */
@media (max-width: 1100px) {
  .col-3 { grid-column: span 6; }
  .col-4 { grid-column: span 6; }
  .ftr-grid { grid-template-columns: 1.4fr repeat(2, minmax(0, 1fr)); }
  .hdr-index-inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 959px) {
  .hdr-bar-inner {
    flex-wrap: wrap;
    gap: 10px;
    padding-block: 10px;
  }
  .brand { flex: 1 1 auto; order: 1; }
  .hdr-actions { order: 2; }
  .nav-toggle { display: inline-flex; }

  .nav {
    order: 3;
    flex: 1 1 100%;
    margin-left: 0;
    padding-top: 8px;
    border-top: 1px solid var(--line);
  }
  .nav-list {
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 4px;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }
  .nav-link { padding: 9px 11px; }

  .nav[data-open] .nav-list {
    flex-wrap: wrap;
    overflow: visible;
  }
  .site-header[data-open] .hdr-utility { display: block; }
}

@media (max-width: 720px) {
  .hdr-coord { display: none; }
  .hdr-strip-inner { justify-content: flex-end; }
  .brand-line { display: none; }
  .hdr-index-inner { grid-template-columns: 1fr; }
  .ftr-grid { grid-template-columns: 1fr 1fr; gap: 22px; }
  .ftr-brand { grid-column: 1 / -1; }
  .ftr-base-inner { flex-direction: column; align-items: flex-start; }
  .col-3, .col-4, .col-6, .col-8 { grid-column: span 12; }
}

@media (max-width: 420px) {
  .ftr-grid { grid-template-columns: 1fr; }
  .quick-dock { right: 12px; bottom: 12px; }
  .dock-toggle { width: 48px; height: 48px; }
}