/* ============================================================
   安博体育看台 · 共享样式表 /assets/site.css
   夜间看台 + 比赛日控制室：炭黑地坪、墨绿分区、苔藓边框、
   青柠锚点、索引青状态、信号橙告警。
   ============================================================ */

/* ---------- 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,ul,ol,li,figure,blockquote,dl,dd,fieldset{margin:0}
ul,ol{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}
input,textarea,select{font:inherit}
table{border-collapse:collapse;width:100%}

/* ---------- 2. 变量 ---------- */
:root{
  --ink:#07110D;
  --ink-green:#0C1A14;
  --moss:#14372B;
  --lime:#C6FF3D;
  --orange:#FF7A2F;
  --teal:#5BE7D2;
  --chalk:#E8F0E4;
  --sage:#7A8C83;
  --slate:#1F3A33;

  --font-display:"Arial Narrow","Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --wrap:1240px;
  --pad:clamp(16px,3vw,36px);
  --radius-lg:24px;
  --radius-md:16px;
  --radius-pill:999px;
  --line:1px solid var(--moss);
}

/* ---------- 3. 基础排版 ---------- */
body{
  min-height:100vh;
  background:var(--ink);
  color:var(--chalk);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.012em;
}
h1{font-size:clamp(34px,5.4vw,68px)}
h2{font-size:clamp(26px,3.4vw,42px)}
h3{font-size:clamp(20px,2.2vw,26px)}
p{margin-bottom:1em}
p:last-child{margin-bottom:0}
strong{color:var(--chalk);font-weight:700}
code,kbd,samp{font-family:var(--font-mono);font-size:.9em;letter-spacing:.04em;color:var(--teal)}
::selection{background:var(--lime);color:var(--ink)}
main{display:block}
[id]{scroll-margin-top:150px}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
.muted{color:var(--sage);font-size:14.5px;line-height:1.7}

/* ---------- 4. 工具类 ---------- */
.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;
}
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad)}
.rule{border:0;border-top:var(--line);margin:0}

/* ---------- 5. 跳转链接 ---------- */
.skip-link{
  position:fixed;top:-100px;left:16px;z-index:300;
  padding:.62rem 1.05rem;
  background:var(--lime);color:var(--ink);
  font-weight:800;font-size:14px;border-radius:0 0 14px 14px;
  transition:top .18s ease;
}
.skip-link:focus{top:0}

/* ---------- 6. 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(12,26,20,.94);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--moss);
}
.read-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;z-index:4;
  background:rgba(20,55,43,.7);pointer-events:none;
}
.read-progress > span{
  display:block;height:100%;width:100%;
  background:linear-gradient(90deg,var(--teal),var(--lime));
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .12s linear;
}
.header-inner{
  width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad);
}

/* 上层状态带 */
.header-top{background:var(--ink-green);border-bottom:1px solid var(--moss)}
.header-top .header-inner{
  display:flex;align-items:center;gap:clamp(12px,2vw,26px);
  min-height:54px;padding-block:7px;flex-wrap:wrap;
}

/* 品牌署名 */
.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  position:relative;width:30px;height:30px;flex:0 0 auto;
  border-radius:9px;transform:rotate(-8deg);
  background:linear-gradient(152deg,var(--lime),#93D820);
  box-shadow:inset 0 0 0 1px rgba(7,17,13,.4);
}
.brand-mark::after{
  content:"";position:absolute;inset:6px;border-radius:2px;
  background:repeating-linear-gradient(90deg,var(--ink) 0 3px,transparent 3px 6px);
  opacity:.86;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{
  font-family:var(--font-display);font-weight:800;
  font-size:17px;letter-spacing:-.01em;color:var(--chalk);
}
.brand-sub{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--sage);margin-top:3px;
}

.header-note{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;
  color:var(--sage);margin:0 0 0 4px;padding-left:14px;
  border-left:1px solid var(--moss);white-space:nowrap;
}

.header-status{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin-left:auto;
}
.version-badge{
  display:inline-flex;align-items:center;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  padding:.3rem .72rem;border-radius:var(--radius-pill);
  color:var(--lime);background:rgba(198,255,61,.1);
  border:1px solid rgba(198,255,61,.42);
  white-space:nowrap;
}
.status-pill{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  padding:.3rem .78rem .3rem .62rem;border-radius:var(--radius-pill);
  color:var(--chalk);background:var(--ink);border:1px solid var(--moss);
  cursor:help;white-space:nowrap;transition:border-color .18s ease;
}
.status-pill:hover,.status-pill:focus-visible{border-color:var(--teal)}
.status-dot{
  width:8px;height:8px;border-radius:50%;flex:0 0 auto;
  background:var(--teal);box-shadow:0 0 0 3px rgba(91,231,210,.18);
  animation:health-pulse 3.2s ease-in-out infinite;
}
@keyframes health-pulse{
  0%,100%{box-shadow:0 0 0 3px rgba(91,231,210,.16)}
  50%{box-shadow:0 0 0 6px rgba(91,231,210,.05)}
}
.status-tip{
  position:absolute;top:calc(100% + 10px);right:0;z-index:20;
  width:min(250px,calc(100vw - 40px));
  padding:.65rem .8rem;border-radius:14px;
  background:var(--slate);border:1px solid var(--moss);
  color:var(--chalk);font-family:var(--font-body);font-size:12.5px;
  line-height:1.6;letter-spacing:0;white-space:normal;
  opacity:0;visibility:hidden;transform:translateY(-5px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s;
  box-shadow:0 18px 36px rgba(0,0,0,.45);
}
.status-pill:hover .status-tip,
.status-pill:focus-visible .status-tip,
.status-pill:focus-within .status-tip{
  opacity:1;visibility:visible;transform:translateY(0);
}

/* 下层导航带 */
.header-bar{background:var(--ink)}
.header-bar .header-inner{
  display:flex;align-items:center;gap:14px;
  min-height:66px;padding-block:6px;
}
.site-nav{margin-right:auto;min-width:0}
.nav-list{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav-link{
  display:inline-block;padding:.44rem .82rem;
  border-radius:var(--radius-pill);border:1px solid transparent;
  font-size:14.5px;color:#B9C8BF;
  transition:color .16s ease,background-color .16s ease,border-color .16s ease;
}
.nav-link:hover{color:var(--chalk);border-color:var(--moss);background:var(--slate)}
.nav-link:focus-visible{color:var(--chalk)}
.nav-link[aria-current="page"]{
  background:var(--lime);border-color:var(--lime);
  color:var(--ink);font-weight:700;
}

/* 斜切主入口 */
.cta{
  display:inline-flex;align-items:center;justify-content:center;gap:.45em;
  flex:0 0 auto;padding:.64rem 1.35rem;
  font-family:var(--font-display);font-weight:800;font-size:15px;
  letter-spacing:.04em;color:var(--ink);
  background:var(--lime);
  clip-path:polygon(13px 0,100% 0,calc(100% - 13px) 100%,0 100%);
  transition:background-color .18s ease,color .18s ease;
}
.cta:hover,.cta:focus-visible{background:var(--teal);color:var(--ink)}
.cta:focus-visible{outline:2px solid var(--chalk);outline-offset:3px}

/* 移动导航按钮 */
.nav-toggle{
  display:none;flex:0 0 auto;
  width:46px;height:42px;border-radius:13px;
  border:1px solid var(--moss);background:var(--slate);
  align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .18s ease,background-color .18s ease;
}
.nav-toggle:hover{border-color:var(--lime);background:#25443B}
.nav-toggle-bars{
  position:relative;display:block;width:18px;height:2px;
  background:var(--chalk);border-radius:2px;
  transition:background-color .18s ease;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;
  background:var(--chalk);border-radius:2px;
  transition:transform .2s ease;
}
.nav-toggle-bars::before{top:-6px}
.nav-toggle-bars::after{top:6px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  margin-top:clamp(48px,8vw,104px);
  background:var(--ink-green);
  border-top:1px solid var(--moss);
  color:var(--chalk);
}
.footer-inner{
  width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad);
}

.footer-strip{
  border-bottom:1px solid var(--moss);
  background-color:rgba(20,55,43,.22);
  background-image:
    linear-gradient(rgba(20,55,43,.85) 1px,transparent 1px),
    linear-gradient(90deg,rgba(20,55,43,.85) 1px,transparent 1px);
  background-size:32px 32px;
}
.footer-strip .footer-inner{
  display:flex;flex-wrap:wrap;gap:10px 30px;
  padding-block:11px;
}
.strip-item{display:inline-flex;align-items:baseline;gap:8px}
.strip-key{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--sage);
}
.strip-val{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;
  color:var(--chalk);
}

.footer-main .footer-grid{
  display:grid;
  grid-template-columns:minmax(230px,1.45fr) repeat(3,minmax(110px,.62fr));
  gap:clamp(22px,4vw,52px);
  padding-block:clamp(30px,4.6vw,54px);
}
.footer-brand{position:relative;padding-right:30px}
.vlabel{
  position:absolute;top:0;right:0;
  writing-mode:vertical-rl;text-orientation:mixed;
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.26em;
  text-transform:uppercase;color:var(--moss);pointer-events:none;
}
.footer-tagline{
  margin-top:14px;font-size:14.5px;line-height:1.75;
  color:var(--sage);max-width:26ch;
}
.footer-col-title{
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.2em;text-transform:uppercase;color:var(--sage);
  padding-bottom:9px;margin-bottom:12px;position:relative;
}
.footer-col-title::after{
  content:"";position:absolute;left:0;bottom:0;width:20px;height:2px;
  background:var(--moss);
}
.footer-links a{
  display:inline-block;padding:.3rem 0;
  font-size:14.5px;color:#B9C8BF;
  transition:color .16s ease,transform .16s ease;
}
.footer-links a:hover,.footer-links a:focus-visible{color:var(--lime);transform:translateX(3px)}

.footer-contact{border-top:1px solid var(--moss)}
.contact-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:16px 28px;padding-block:clamp(22px,3.6vw,34px);
}
.contact-item{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 10px}
.contact-item--wide{grid-column:1/-1}
.contact-label{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--sage);
}
.contact-value{
  font-family:var(--font-mono);font-size:14.5px;letter-spacing:.02em;
  color:var(--chalk);word-break:break-word;
}
.copy-btn{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;
  padding:.24rem .6rem;border-radius:var(--radius-pill);
  border:1px solid var(--moss);color:var(--sage);cursor:pointer;
  transition:color .16s ease,border-color .16s ease,background-color .16s ease;
}
.copy-btn:hover{border-color:var(--lime);color:var(--lime);background:rgba(198,255,61,.08)}
.copy-btn[data-copied="true"]{border-color:var(--teal);color:var(--teal)}
.copy-btn[data-copied="false"]{border-color:var(--orange);color:var(--orange)}
.contact-note{
  grid-column:1/-1;font-size:13.5px;line-height:1.7;color:var(--sage);margin:0;
}

.footer-bottom{border-top:1px solid var(--moss)}
.footer-bottom-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 26px;padding-block:18px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;
  color:var(--sage);
}
.footer-legal,.footer-mono{margin:0;font-size:11.5px}
.footer-icp{color:var(--sage);letter-spacing:.06em}

/* ---------- 8. 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:.74rem 1.45rem;border-radius:var(--radius-pill);
  border:1px solid var(--moss);background:var(--slate);color:var(--chalk);
  font-size:15px;font-weight:700;letter-spacing:.01em;cursor:pointer;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.btn:hover{border-color:var(--lime);color:var(--lime)}
.btn--primary{background:var(--lime);border-color:var(--lime);color:var(--ink)}
.btn--primary:hover{background:var(--teal);border-color:var(--teal);color:var(--ink)}
.btn--ghost{background:transparent}
.btn--ghost:hover{background:rgba(198,255,61,.08)}

/* ---------- 9. 胶囊标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:.42em;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  padding:.28rem .66rem;border-radius:var(--radius-pill);
  border:1px solid var(--moss);background:rgba(31,58,51,.6);color:var(--chalk);
  white-space:nowrap;
}
.tag--ok{border-color:rgba(91,231,210,.5);background:rgba(91,231,210,.08);color:var(--teal)}
.tag--alert{border-color:rgba(255,122,47,.55);background:rgba(255,122,47,.09);color:var(--orange)}

/* ---------- 10. 卡片面板 ---------- */
.panel{
  background:var(--ink-green);
  border:1px solid var(--moss);
  border-radius:var(--radius-lg);
  padding:clamp(18px,2.6vw,30px);
  transition:border-color .18s ease;
}
.panel:hover{border-color:#245B47}
.panel--slate{background:var(--slate)}

/* ---------- 11. 章节小标 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:.62em;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--lime);margin-bottom:.9rem;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);display:block}
.section-title{font-size:clamp(26px,3.5vw,44px);letter-spacing:-.015em}

/* ---------- 12. 面包屑 ---------- */
.breadcrumb{padding-block:16px 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem}
.breadcrumb li{
  display:inline-flex;align-items:center;gap:.5rem;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;
  color:var(--sage);
}
.breadcrumb li + li::before{content:"/";color:var(--moss)}
.breadcrumb a{color:var(--sage);transition:color .16s ease}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb li[aria-current="page"]{color:var(--chalk)}

/* ---------- 13. 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--sidebar{
  grid-template-columns:minmax(170px,236px) minmax(0,1fr);
  gap:clamp(20px,3vw,46px);align-items:start;
}

/* ---------- 14. 图像容器基础规则 ---------- */
.media-frame{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--moss);
  aspect-ratio:16/10;
  background:
    radial-gradient(120% 90% at 18% 0%,rgba(91,231,210,.14),transparent 62%),
    linear-gradient(158deg,var(--slate),var(--ink));
}
.media-frame > img,
.media-frame > picture > img{
  width:100%;height:100%;object-fit:cover;display:block;
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(91,231,210,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(91,231,210,.07) 1px,transparent 1px);
  background-size:28px 28px;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-cap{
  margin-top:.6rem;font-family:var(--font-mono);
  font-size:11.5px;letter-spacing:.08em;color:var(--sage);
}

/* ---------- 15. 响应式 ---------- */
@media (max-width:1024px){
  .header-note{display:none}
  .footer-main .footer-grid{
    grid-template-columns:minmax(200px,1.2fr) repeat(3,minmax(100px,.7fr));
  }
}

@media (max-width:900px){
  .header-top .header-inner{min-height:50px;padding-block:6px;gap:10px}
  .header-bar .header-inner{
    flex-wrap:wrap;min-height:0;padding-block:10px;gap:10px;
  }
  .nav-toggle{display:flex;order:3;margin-left:0}
  .header-bar .cta{order:2;margin-left:auto;padding:.58rem 1.1rem;font-size:14px}
  .site-nav{
    order:4;width:100%;margin-right:0;
    display:none;
    border-top:1px solid var(--moss);
    margin-top:10px;padding-top:10px;
  }
  .site-nav[data-open="true"]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:2px}
  .nav-link{
    display:block;padding:.72rem .95rem;border-radius:14px;font-size:16px;
  }
  .nav-link[aria-current="page"]{border-radius:14px}

  .footer-main .footer-grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:26px 20px;
  }
  .footer-brand{grid-column:1/-1;padding-right:0}
  .vlabel{display:none}
  .grid--2,.grid--3,.grid--sidebar{grid-template-columns:minmax(0,1fr)}
}

@media (max-width:560px){
  body{font-size:16px}
  .header-status{gap:8px;width:100%;margin-left:0}
  .version-badge,.status-pill{font-size:10.5px;padding:.26rem .62rem}
  .brand-name{font-size:16px}
  .footer-strip .footer-inner{gap:8px 18px}
  .contact-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom-inner{justify-content:flex-start}
  .breadcrumb ol{gap:.4rem}
}

@media (max-width:380px){
  .header-bar .cta{display:none}
}

/* ---------- 16. 减少动态偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  .status-dot{animation:none}
  .read-progress > span{transition:none}
  .footer-links a:hover,.footer-links a:focus-visible{transform:none}
}