/* ============================================================
   优德赛场 · 共享外壳样式  /assets/site.css
   场地墨绿 + 蓝图网格 + 裁判黄/警示红状态语义
   ============================================================ */

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit}
table{border-collapse:collapse;width:100%}

:root{
  --ink:#0B1512;
  --ink-2:#0E1B16;
  --moss:#1D3A2C;
  --stone:#46514D;
  --bone:#F3F0E7;
  --glass:rgba(243,240,231,.08);
  --yellow:#F4C400;
  --red:#D9473F;
  --clay:#B76E4A;
  --haze:#A7C0C8;
  --score:#3E8E6D;
  --line:rgba(243,240,231,.16);
  --line-soft:rgba(243,240,231,.09);
  --line-ink:rgba(11,21,18,.16);
  --font-display:"Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --wrap:1280px;
  --pad:clamp(16px,4vw,48px);
  --radius:2px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

body{
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.8;
  font-weight:400;
  color:var(--bone);
  background-color:var(--ink);
  background-image:
    linear-gradient(to right,var(--line-soft) 1px,transparent 1px),
    linear-gradient(to bottom,var(--line-soft) 1px,transparent 1px);
  background-size:72px 72px,72px 72px;
  background-position:center top;
  min-height:100vh;
  overflow-x:hidden;
}

h1,h2,h3,h4,h5{font-family:var(--font-display);font-weight:900;letter-spacing:-.03em;line-height:1.18}
h1{font-size:clamp(2.2rem,4.8vw,3.8rem)}
h2{font-size:clamp(1.5rem,3vw,2.4rem)}
h3{font-size:1.125rem}
p{max-width:72ch}
strong{font-weight:700}

:focus-visible{outline:2px solid var(--haze);outline-offset:3px;border-radius:2px}
.btn--primary:focus-visible,.chip:focus-visible{outline-color:var(--bone)}
#main-content{scroll-margin-top:130px}
#main-content:focus{outline:none}
html.is-nav-open{overflow:hidden}

/* ---------- 基础工具 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.eyebrow{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.18em;color:var(--haze);text-transform:uppercase;display:block;margin-bottom:10px}
.hairline{height:1px;border:0;background:var(--line);margin:0}

.skip-link{
  position:fixed;top:8px;left:8px;z-index:200;
  padding:10px 18px;background:var(--yellow);color:var(--ink);
  font-weight:700;text-decoration:none;border-radius:var(--radius);
  transform:translateY(-180%);transition:transform .2s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0);outline:2px solid var(--bone);outline-offset:2px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;font-family:var(--font-body);font-size:.9rem;font-weight:700;
  letter-spacing:.02em;text-decoration:none;border:1px solid transparent;
  border-radius:var(--radius);cursor:pointer;line-height:1.4;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn--primary{background:var(--yellow);color:var(--ink);border-color:var(--yellow)}
.btn--primary:hover{background:var(--bone);border-color:var(--bone);transform:translateY(-1px)}
.btn--ghost{background:transparent;color:var(--bone);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--yellow);color:var(--yellow);background:rgba(244,196,0,.08);transform:translateY(-1px)}
.btn--danger{background:var(--red);color:#FFF;border-color:var(--red)}
.btn--danger:hover{background:#E2564E;border-color:#E2564E}
.btn--sm{padding:7px 12px;font-size:.8rem}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,21,18,.8);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
}

.rail{
  background:linear-gradient(90deg,rgba(29,58,44,.95),rgba(11,21,18,.6));
  border-bottom:1px solid var(--line-soft);
}
.rail__inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:34px;padding-block:4px;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;color:var(--haze);
}
.rail__status{display:flex;align-items:center;gap:9px;white-space:nowrap}
.rail__dot{
  width:7px;height:7px;display:inline-block;background:var(--score);
  box-shadow:0 0 0 3px rgba(62,142,109,.18);
}
.rail__rounds{display:flex;align-items:center;gap:6px}
.rail__readout{
  margin-left:8px;padding-left:10px;border-left:1px solid var(--line);
  color:var(--bone);font-weight:600;letter-spacing:.08em;
}
.chip{
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;line-height:1.5;
  color:var(--haze);border:1px solid var(--line);padding:3px 8px;border-radius:var(--radius);
  transition:color .16s var(--ease),border-color .16s var(--ease),background-color .16s var(--ease);
}
.chip:hover{color:var(--bone);border-color:var(--yellow);background:rgba(244,196,0,.1)}
.chip[aria-pressed="true"]{background:var(--yellow);border-color:var(--yellow);color:var(--ink);font-weight:700}

.header__bar{
  display:flex;align-items:center;gap:clamp(12px,2.5vw,32px);
  min-height:74px;padding-block:10px;
}

.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;flex:0 0 auto;padding:4px;margin:-4px;border-radius:var(--radius)}
.brand__mark{
  position:relative;width:42px;height:42px;display:grid;place-items:center;
  border:1.5px solid var(--yellow);color:var(--yellow);
  background:rgba(244,196,0,.07);
  font-family:var(--font-mono);font-size:.78rem;font-weight:700;letter-spacing:.06em;
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.brand__mark::after{content:"";position:absolute;right:-1px;bottom:-1px;width:8px;height:8px;background:var(--red)}
.brand:hover .brand__mark{background:var(--yellow);color:var(--ink)}
.brand__text{display:block;min-width:0}
.brand__name{display:block;font-family:var(--font-display);font-weight:900;font-size:1.1rem;letter-spacing:-.02em;line-height:1.25;color:var(--bone)}
.brand__tag{display:block;font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;color:rgba(243,240,231,.55);line-height:1.5}

.site-nav{margin-inline-start:auto}
.site-nav__list{display:flex;align-items:center;gap:clamp(0px,.6vw,6px)}
.site-nav__list>li{display:block}
.site-nav a{
  position:relative;display:flex;align-items:baseline;gap:6px;
  padding:10px 12px;text-decoration:none;color:rgba(243,240,231,.8);
  font-size:.94rem;font-weight:500;line-height:1.4;
  border-bottom:2px solid transparent;border-radius:var(--radius) var(--radius) 0 0;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.nav-index{font-family:var(--font-mono);font-size:.6rem;letter-spacing:.06em;color:var(--haze);opacity:.6;transition:color .18s var(--ease),opacity .18s var(--ease)}
.site-nav a:hover{color:var(--bone);background:var(--glass);border-bottom-color:var(--yellow)}
.site-nav a:hover .nav-index{color:var(--yellow);opacity:1}
.site-nav a[aria-current="page"]{color:var(--yellow);border-bottom-color:var(--yellow)}
.site-nav a[aria-current="page"] .nav-index{color:var(--yellow);opacity:1}
.site-nav__cta{display:none}

.header__actions{display:flex;align-items:center;gap:10px;margin-inline-start:clamp(4px,1vw,12px)}

.nav-toggle{
  display:none;align-items:center;gap:9px;padding:9px 12px;
  border:1px solid var(--line);border-radius:var(--radius);
  color:var(--bone);font-family:var(--font-mono);font-size:.7rem;letter-spacing:.14em;
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--yellow);color:var(--yellow);background:rgba(244,196,0,.08)}
.nav-toggle__bars{position:relative;display:block;width:16px;height:10px}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;
  transition:transform .2s var(--ease),top .2s var(--ease);
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{top:8px}
.site-header[data-open] .nav-toggle{border-color:var(--yellow);color:var(--yellow)}
.site-header[data-open] .nav-toggle__bars::before{top:4px;transform:rotate(45deg)}
.site-header[data-open] .nav-toggle__bars::after{top:4px;transform:rotate(-45deg)}

/* 滚动进度条（JS 注入） */
.scroll-progress{
  position:absolute;left:0;bottom:-1px;height:2px;width:0;z-index:3;
  background:linear-gradient(90deg,var(--yellow),var(--red));
  transition:width .1s linear;
}

/* 返回顶部（JS 注入） */
.to-top{
  position:fixed;right:clamp(12px,3vw,28px);bottom:clamp(12px,3vw,28px);z-index:90;
  display:inline-flex;align-items:center;gap:8px;padding:10px 14px;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.14em;
  color:var(--bone);background:rgba(11,21,18,.84);border:1px solid var(--line);
  border-radius:var(--radius);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s,color .2s var(--ease),border-color .2s var(--ease);
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--yellow);color:var(--yellow)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:linear-gradient(180deg,rgba(29,58,44,.55) 0%,rgba(11,21,18,.96) 100%);
  border-top:1px solid var(--line);
  color:var(--bone);
}
.footer-ticks{
  height:14px;
  background-image:repeating-linear-gradient(90deg,rgba(243,240,231,.28) 0 1px,transparent 1px 40px);
  border-bottom:1px solid var(--line-soft);
}
.footer__grid{
  display:grid;
  grid-template-columns:1.5fr .8fr .8fr 1.4fr;
  gap:clamp(24px,4vw,56px);
  padding-block:clamp(40px,6vw,72px);
}
.footer__brand{display:flex;flex-direction:column;align-items:flex-start;gap:16px}
.brand--footer{margin:0;padding:0}
.footer__blurb{max-width:34ch;font-size:.92rem;line-height:1.85;color:rgba(243,240,231,.7)}
.footer__title{
  display:flex;align-items:center;gap:10px;
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:.7rem;font-weight:600;
  letter-spacing:.18em;text-transform:uppercase;color:var(--haze);
}
.footer__title::after{content:"";flex:1;height:1px;background:var(--line-soft)}
.footer__links{display:flex;flex-direction:column;gap:8px}
.footer__links a{
  display:inline-block;padding-block:3px;font-size:.92rem;text-decoration:none;
  color:rgba(243,240,231,.78);border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer__links a:hover{color:var(--yellow);border-bottom-color:rgba(244,196,0,.45)}

.footer__contact{min-width:0}
.contact-list{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.contact-row{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;
  padding-block:8px;border-bottom:1px dashed var(--line-soft);
}
.contact-row--wide{grid-template-columns:auto 1fr}
.contact-row__key{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.14em;color:var(--haze)}
.contact-row__val{font-size:.9rem;color:var(--bone);word-break:break-all;min-width:0}
.copy-btn{
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.1em;
  padding:4px 10px;border:1px solid var(--line);border-radius:var(--radius);color:var(--haze);
  transition:color .16s var(--ease),border-color .16s var(--ease),background-color .16s var(--ease);
}
.copy-btn:hover{border-color:var(--yellow);color:var(--yellow);background:rgba(244,196,0,.1)}
.copy-btn[data-copied="ok"]{border-color:var(--score);color:var(--score)}
.copy-btn[data-copied="fail"]{border-color:var(--red);color:var(--red)}
.footer__note{max-width:40ch;font-size:.78rem;line-height:1.7;color:rgba(243,240,231,.55)}
.copy-status{min-height:1.3em;margin-top:6px;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.1em;color:var(--score)}
.footer__bottom{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;
  padding-block:18px;border-top:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.06em;color:rgba(243,240,231,.55);
}
.footer__copy,.footer__meta{margin:0}

/* ---------- 通用区块 ---------- */
.section{padding-block:clamp(44px,6vw,90px)}
.section--moss{background:rgba(29,58,44,.72);border-block:1px solid var(--line-soft)}
.section--bone{background:var(--bone);color:var(--ink);border-block:1px solid var(--line-ink)}
.section--bone .eyebrow{color:var(--clay)}
.section--bone .section__lede{color:var(--stone)}
.section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;
  padding-bottom:18px;margin-bottom:clamp(24px,4vw,44px);border-bottom:1px solid var(--line);
}
.section--bone .section__head{border-bottom-color:var(--line-ink)}
.section__title{max-width:24ch}
.section__lede{max-width:56ch;font-size:1rem;color:rgba(243,240,231,.72)}

.split{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:clamp(20px,3vw,48px)}
.blueprint-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2vw,28px)}

.prose{max-width:72ch;font-size:1.0625rem;line-height:1.85}
.prose>*+*{margin-top:1.1em}
.prose h2{margin-top:1.6em}
.prose h3{margin-top:1.4em}
.prose ul{display:flex;flex-direction:column;gap:.45em}
.prose ul>li{position:relative;padding-left:1.1em}
.prose ul>li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--clay)}
.prose a{color:var(--haze);text-underline-offset:3px}
.prose a:hover{color:var(--yellow)}
.section--bone .prose a{color:#3A5C6B}
.section--bone .prose a:hover{color:var(--clay)}

/* ---------- 面板 / 卡片 ---------- */
.panel{
  border:1px solid var(--line);background:rgba(243,240,231,.03);
  padding:clamp(16px,2.4vw,28px);border-radius:var(--radius);
}
.panel--glass{
  background:var(--glass);border-color:rgba(243,240,231,.2);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  transition:transform .18s var(--ease),border-color .18s var(--ease);
}
.panel--glass:hover{transform:translateY(-2px);border-color:var(--yellow)}
.panel--bone{background:var(--bone);color:var(--ink);border-color:var(--line-ink)}
.panel__head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-bottom:12px;margin-bottom:14px;border-bottom:1px solid var(--line-soft);
}
.panel--bone .panel__head{border-bottom-color:var(--line-ink)}
.panel__title{font-family:var(--font-display);font-weight:900;font-size:1rem;letter-spacing:-.01em}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;line-height:1.5;
  padding:3px 8px;border:1px solid currentColor;border-radius:var(--radius);
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;
}
.tag--yellow{color:var(--yellow)}
.tag--red{color:var(--red)}
.tag--clay{color:var(--clay)}
.tag--score{color:var(--score)}
.tag--haze{color:var(--haze)}

/* ---------- 数据元件 ---------- */
.stat{display:flex;flex-direction:column;gap:4px}
.stat__value{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:600;
  font-size:clamp(1.6rem,3vw,2.6rem);line-height:1;letter-spacing:-.02em;
}
.stat__label{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.14em;color:var(--haze)}
.stat--red .stat__value{color:var(--red)}
.stat--yellow .stat__value{color:var(--yellow)}
.stat--score .stat__value{color:var(--score)}
.stat--clay .stat__value{color:var(--clay)}
.section--bone .stat__label{color:var(--stone)}

.bar-row{
  display:grid;grid-template-columns:minmax(56px,7rem) minmax(0,1fr) auto;
  align-items:center;gap:12px;padding-block:7px;border-bottom:1px solid var(--line-soft);
}
.bar{position:relative;height:10px;overflow:hidden;background:rgba(243,240,231,.08);border-radius:1px}
.bar__fill{display:block;height:100%;width:0;background:var(--yellow);transition:width .4s var(--ease)}
.bar__fill--red{background:var(--red)}
.bar__fill--score{background:var(--score)}
.bar__fill--haze{background:var(--haze)}
.bar__fill--clay{background:var(--clay)}
.section--bone .bar{background:rgba(11,21,18,.1)}

/* ---------- 图片容器 ---------- */
.media{
  position:relative;display:block;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius);
  background-color:var(--moss);
  background-image:repeating-linear-gradient(135deg,rgba(243,240,231,.07) 0 1px,transparent 1px 12px);
  aspect-ratio:16/10;
}
.media>img{width:100%;height:100%;object-fit:cover;display:block}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(11,21,18,0) 45%,rgba(11,21,18,.72) 100%);
}
.media--wide{aspect-ratio:21/9}
.media--square{aspect-ratio:1/1}
.media--portrait{aspect-ratio:3/4}
.media__tag{
  position:absolute;left:12px;bottom:12px;z-index:2;
  padding:4px 8px;border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(11,21,18,.62);color:var(--bone);
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.section--bone .media{border-color:var(--line-ink)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  padding-block:14px;font-family:var(--font-mono);font-size:.72rem;
  letter-spacing:.1em;color:rgba(243,240,231,.55);
}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb__list>li{display:flex;align-items:center;gap:8px}
.breadcrumb__list>li+li::before{content:"/";color:var(--clay)}
.breadcrumb a{text-decoration:none;transition:color .16s var(--ease)}
.breadcrumb a:hover{color:var(--yellow)}
.breadcrumb [aria-current="page"]{color:var(--bone)}
.section--bone .breadcrumb{color:var(--stone)}
.section--bone .breadcrumb [aria-current="page"]{color:var(--ink)}

/* ---------- 平板 / 移动 ---------- */
@media (max-width:1024px){
  .nav-toggle{display:inline-flex}
  .header__cta{display:none}
  .header__bar{min-height:64px}
  .header__actions{margin-inline-start:auto}

  .site-nav{
    position:fixed;top:0;right:0;bottom:0;left:auto;
    width:min(88vw,360px);margin:0;
    padding:calc(24px + env(safe-area-inset-top,0px)) 24px 32px;
    background:linear-gradient(180deg,#16301F 0%,#0B1512 100%);
    border-left:1px solid rgba(243,240,231,.2);
    box-shadow:-24px 0 60px rgba(0,0,0,.45);
    transform:translateX(103%);
    transition:transform .22s var(--ease);
    z-index:80;overflow-y:auto;
  }
  .site-nav[data-open]{transform:translateX(0)}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .site-nav a{
    padding:15px 12px;font-size:1rem;
    border-bottom:1px solid var(--line-soft);
    border-left:2px solid transparent;
    border-radius:0;
  }
  .site-nav a:hover,.site-nav a[aria-current="page"]{
    border-bottom-color:var(--line-soft);
    border-left-color:var(--yellow);
    background:var(--glass);
  }
  .site-nav a[aria-current="page"]{background:rgba(244,196,0,.08)}
  .site-nav__cta{
    display:flex;align-items:center;justify-content:center;
    margin-top:22px;padding:13px 16px;
    background:var(--yellow);color:var(--ink);
    font-weight:700;font-size:.94rem;text-decoration:none;border-radius:var(--radius);
  }
  .site-nav__cta:hover{background:var(--bone)}
  .site-header[data-open]::after{
    content:"";position:fixed;inset:0;z-index:70;
    background:rgba(11,21,18,.62);
    -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
  }

  .footer__grid{grid-template-columns:1fr 1fr}
  .footer__brand,.footer__contact{grid-column:1 / -1}
  .split{grid-template-columns:1fr}
}

@media (max-width:640px){
  .rail__inner{min-height:30px;font-size:.66rem;letter-spacing:.05em}
  .rail__readout{display:none}
  .brand__tag{display:none}
  .brand__mark{width:36px;height:36px;font-size:.72rem}
  .brand__name{font-size:1rem}
  .footer__grid{grid-template-columns:1fr;gap:28px}
  .footer__bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .contact-row{grid-template-columns:auto minmax(0,1fr) auto}
  .bar-row{grid-template-columns:minmax(48px,5rem) minmax(0,1fr) auto;gap:8px}
  .to-top{right:12px;bottom:12px}
}

@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;
  }
  .panel--glass:hover,.btn:hover{transform:none}
}