/* ============================================================
   site.css — 博喜体育 共享外壳
   0 reset / 1 tokens / 2 base / 3 utilities / 4 components
   5 header / 6 rail / 7 footer / 8 a11y
   ============================================================ */

/* ---------- 0. 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{margin:0}
ul,ol{list-style:none;padding:0}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}

/* ---------- 1. tokens ---------- */
:root{
  --ink:#0A1411;
  --moss:#14231E;
  --board:#1E3A32;
  --paper:#F2F4EF;
  --graphite:#55635D;
  --signal:#2CE8C4;
  --pace:#FF7A33;
  --text:#E9EFEA;
  --hair:#E9EFEA24;
  --line:#26382F;

  --font-cn:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","IBM Plex Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --font-serif:Georgia,"Source Serif Pro","Songti SC","Times New Roman",serif;

  --rail-w:66px;
  --bar-h:62px;
  --maxw:1320px;
  --gutter:clamp(16px,4vw,40px);
  --ease:cubic-bezier(.2,.7,.2,1);
}
@media (min-width:1080px){
  :root{--rail-w:78px;--bar-h:70px}
}

/* ---------- 2. base ---------- */
body{
  background:var(--ink);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:clamp(15px,1.05vw,17px);
  font-weight:400;
  line-height:1.65;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-weight:900;line-height:1.08;letter-spacing:-.02em}
h1{font-size:clamp(2.4rem,6vw,4.5rem);line-height:1.02}
h2{font-size:clamp(1.6rem,3vw,2.4rem)}
h3{font-size:clamp(1.15rem,1.8vw,1.5rem)}
strong{font-weight:700}
p{max-width:78ch}

/* ---------- 3. utilities ---------- */
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.06em}
.serif{font-family:var(--font-serif);font-style:italic;font-weight:400;letter-spacing:0}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.dot{display:inline-block;width:7px;height:7px;background:var(--signal);box-shadow:0 0 0 3px #2CE8C422;flex:0 0 auto}

.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
@media (min-width:1080px){
  .wrap{padding-left:calc(var(--rail-w) + clamp(20px,3vw,44px))}
}

.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(12px,2vw,28px)}
.span-4,.span-5,.span-6,.span-7,.span-8,.span-9,.span-12{grid-column:span 12}
@media (min-width:760px){
  .span-4{grid-column:span 4}
  .span-5{grid-column:span 5}
  .span-6{grid-column:span 6}
  .span-7{grid-column:span 7}
  .span-8{grid-column:span 8}
  .span-9{grid-column:span 9}
  .span-12{grid-column:span 12}
}

.sec{padding-block:clamp(40px,6vw,84px)}
.sec--panel{background:var(--moss);border-block:1px solid var(--line)}
.sec--paper{
  background:var(--paper);
  color:#101A16;
  --text:#101A16;
  --hair:#0A14111F;
  --line:#0A141126;
}
.rule{height:1px;background:var(--hair);border:0;margin-block:clamp(20px,3vw,36px)}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--signal);
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor}
.num{font-family:var(--font-mono);font-weight:700;line-height:.9;letter-spacing:-.04em}

.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:.32em .6em;border:1px solid var(--hair);border-radius:2px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;color:#A9BFB7;
}
.chip--signal{color:var(--signal);border-color:#2CE8C459}
.chip--pace{color:var(--pace);border-color:#FF7A3359}
.sec--paper .chip{color:#2E423A;border-color:#0A141126}
.sec--paper .chip--signal{color:#0E7A67;border-color:#0E7A674D}
.sec--paper .chip--pace{color:#B4460F;border-color:#B4460F4D}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:.78em 1.15em;border:1px solid var(--hair);border-radius:2px;
  font-size:.94rem;font-weight:700;line-height:1;letter-spacing:.02em;
  transition:background .15s linear,color .15s linear,border-color .15s linear,transform .15s var(--ease);
}
.btn--pace{background:var(--pace);border-color:var(--pace);color:#14100C}
.btn--pace:hover{background:var(--signal);border-color:var(--signal);color:var(--ink)}
.btn--ghost{color:var(--text);border-color:var(--hair)}
.btn--ghost:hover{border-color:var(--signal);color:var(--signal);transform:translateY(-1px)}

.card{
  background:var(--moss);border:1px solid var(--hair);border-radius:2px;
  padding:clamp(16px,2vw,24px);
  transition:border-color .15s linear,transform .15s var(--ease),box-shadow .15s linear;
}
.card:hover,.card:focus-within{border-color:var(--signal);transform:translateY(-2px);box-shadow:0 14px 30px #00000055}
.sec--paper .card{background:#E6EBE3;border-color:#0A14111A}
.card__meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.06em;color:#8FA79E;
}
.sec--paper .card__meta{color:#4C5F56}

.media{
  position:relative;overflow:hidden;aspect-ratio:4/3;
  background:var(--board);border:1px solid var(--hair);border-radius:2px;
}
.media img,.media svg{width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:16/9}
.media--tall{aspect-ratio:3/4}
.media:empty::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(135deg,#E9EFEA12 0 1px,transparent 1px 14px);
}
.media__cap{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;
  margin-top:8px;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.06em;color:#8FA79E;
}
.figure-band{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:clamp(10px,1.6vw,22px)}

.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;color:#7E978D}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:#3F5A50}
.crumb a{transition:color .12s linear}
.crumb a:hover{color:var(--signal)}
.crumb [aria-current="page"]{color:var(--text)}

.sec-head{display:grid;gap:8px;margin-bottom:clamp(20px,3vw,36px)}
.sec-head__num{font-family:var(--font-mono);font-size:clamp(1.6rem,3.4vw,2.6rem);line-height:1;letter-spacing:-.01em;color:var(--signal)}
.sec-head__title{font-size:clamp(1.5rem,3.2vw,2.4rem)}
.sec-head__desc{color:inherit;opacity:.68;max-width:58ch;font-size:.95rem}

.prose{max-width:68ch;line-height:1.7}
.prose p+p{margin-top:1.2em}
.prose h2,.prose h3{margin-top:1.8em;margin-bottom:.5em}
.prose a{color:var(--signal);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.prose ul{display:grid;gap:.5em;margin-top:1em}
.prose li{padding-left:1.1em;position:relative}
.prose li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:1px;background:var(--signal)}

/* ---------- 5. header ---------- */
.skip{
  position:fixed;left:14px;top:-72px;z-index:200;
  background:var(--signal);color:#04120E;
  padding:.7em 1em;border-radius:2px;
  font-size:.9rem;font-weight:800;
  transition:top .15s var(--ease);
}
.skip:focus{top:12px}

.cmdbar{
  position:sticky;top:0;z-index:90;
  background:var(--ink);
  border-bottom:1px solid var(--line);
}
.cmdbar::after{
  content:"";position:absolute;left:0;bottom:-1px;height:2px;width:var(--scroll,0%);
  background:var(--signal);transition:width .12s linear;pointer-events:none;
}
.cmdbar__inner{
  display:flex;align-items:center;gap:clamp(10px,1.6vw,22px);
  min-height:var(--bar-h);max-width:var(--maxw);margin-inline:auto;
  padding-inline:var(--gutter);
}
@media (min-width:1080px){
  .cmdbar__inner{padding-left:calc(var(--rail-w) + clamp(16px,2.4vw,36px))}
}

.brandmark{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brandmark__mark{position:relative;width:20px;height:26px;border-left:2px solid var(--signal)}
.brandmark__mark::before,
.brandmark__mark::after{content:"";position:absolute;left:5px;height:2px;background:var(--signal)}
.brandmark__mark::before{top:7px;width:12px}
.brandmark__mark::after{top:15px;width:7px;background:var(--pace)}
.brandmark__text{display:flex;flex-direction:column;line-height:1}
.brandmark__name{font-size:1.04rem;font-weight:900;letter-spacing:.02em;transition:color .12s linear}
.brandmark__latin{margin-top:4px;font-family:var(--font-mono);font-size:.6rem;letter-spacing:.2em;color:var(--signal)}
.brandmark:hover .brandmark__name{color:var(--signal)}

.cmdbar__status{
  display:none;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.06em;color:#9DB3AA;
  white-space:nowrap;
}
@media (min-width:1240px){.cmdbar__status{display:inline-flex}}

.nav{display:block}
.nav__list{display:flex;align-items:center;gap:2px;counter-reset:navi}
.nav__link{
  display:flex;align-items:center;gap:6px;
  padding:.52em .6em;border:1px solid transparent;border-radius:2px;
  font-size:.86rem;font-weight:500;color:#B9C8C2;white-space:nowrap;
  transition:color .12s linear,border-color .12s linear,background .12s linear;
}
.nav__link::before{
  counter-increment:navi;
  content:counter(navi,decimal-leading-zero);
  font-family:var(--font-mono);font-size:.6rem;letter-spacing:.06em;color:#57726A;
  transition:color .12s linear;
}
.nav__link:hover{color:var(--signal);border-color:var(--line)}
.nav__link:hover::before{color:var(--signal)}
.nav__link[aria-current="page"]{color:var(--signal);border-color:var(--signal);background:#2CE8C40F}
.nav__link[aria-current="page"]::before{color:var(--signal)}

.cmdbar__actions{display:flex;align-items:center;gap:clamp(8px,1.2vw,14px);margin-left:auto}
.cmdbar__actions .btn{padding:.66em .95em;font-size:.86rem}

.meter{display:none;align-items:baseline;gap:2px;min-width:46px;font-family:var(--font-mono);font-size:.72rem;color:#7E978D;letter-spacing:.04em}
.meter__value{color:var(--signal)}
.meter__unit{font-size:.58rem}
@media (min-width:1280px){.meter{display:inline-flex}}

.navtoggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:10px;
  border:1px solid var(--hair);border-radius:2px;
  transition:border-color .12s linear;
}
.navtoggle:hover{border-color:var(--signal)}
.navtoggle__bar{display:block;width:100%;height:2px;background:var(--text);transition:transform .18s var(--ease),opacity .18s linear}
.navtoggle__bar:nth-child(2){width:70%}
.navtoggle[aria-expanded="true"] .navtoggle__bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.navtoggle[aria-expanded="true"] .navtoggle__bar:nth-child(2){opacity:0}
.navtoggle[aria-expanded="true"] .navtoggle__bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

@media (max-width:1079px){
  .nav{
    position:absolute;top:100%;left:0;right:0;display:none;
    background:var(--moss);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    max-height:calc(100vh - var(--bar-h));overflow-y:auto;
    padding:10px var(--gutter) 22px;
    box-shadow:0 26px 40px #00000073;
  }
  .nav[data-open]{display:block}
  .nav__list{flex-direction:column;align-items:stretch;gap:0}
  .nav__link{
    justify-content:flex-start;padding:.9em .2em;
    font-size:1rem;border:0;border-bottom:1px solid var(--line);border-radius:0;
  }
  .nav__link::before{width:26px;font-size:.68rem}
  .nav__link[aria-current="page"]{background:none;border-color:transparent;border-bottom-color:var(--signal)}
}
@media (min-width:1080px){
  .navtoggle{display:none}
}

/* ---------- 6. rail ---------- */
.rail{
  display:none;position:fixed;left:0;top:calc(var(--bar-h) + 1px);bottom:0;width:var(--rail-w);
  z-index:70;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  border-right:1px solid var(--line);pointer-events:none;
}
@media (min-width:1080px){.rail{display:flex}}
.rail__label{
  writing-mode:vertical-rl;
  font-family:var(--font-mono);font-size:.58rem;letter-spacing:.32em;color:#4E6A61;
  margin-bottom:10px;
}
.rail__tick{display:block;width:16px;height:1px;background:#2A3B34;transition:background .12s linear,width .12s linear}
.rail__tick.is-on{background:var(--signal);width:24px}

/* ---------- 7. footer ---------- */
.sitefoot{background:var(--ink);border-top:1px solid var(--line)}
.sitefoot::before{
  content:"";display:block;height:8px;
  background-image:repeating-linear-gradient(90deg,var(--line) 0 1px,transparent 1px 18px);
}
.sitefoot__lead{
  display:grid;gap:clamp(14px,2vw,24px);
  padding-block:clamp(30px,4.5vw,56px);
  border-bottom:1px solid var(--line);
}
@media (min-width:900px){
  .sitefoot__lead{grid-template-columns:minmax(0,7fr) minmax(0,4fr);align-items:end}
  .sitefoot__lead>div:last-child{justify-self:end;text-align:right}
  .sitefoot__lead>div:last-child .btn{margin-top:0}
}
.sitefoot__kicker{font-size:.66rem;letter-spacing:.24em;color:var(--signal);margin-bottom:12px}
.sitefoot__tagline{
  font-size:clamp(1.9rem,5vw,3.4rem);font-weight:900;line-height:1.02;letter-spacing:-.02em;
  max-width:14ch;
}
.sitefoot__note{font-size:.72rem;letter-spacing:.08em;color:#8FA79E;margin-bottom:16px}

.sitefoot__grid{
  display:grid;gap:clamp(24px,3vw,40px);
  padding-block:clamp(28px,4vw,46px);
  border-bottom:1px solid var(--line);
}
@media (min-width:640px){.sitefoot__grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:960px){.sitefoot__grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media (min-width:960px){.footcol--wide{grid-column:span 2}}

.footcol__title{
  display:flex;align-items:center;gap:10px;
  margin-bottom:16px;
  font-family:var(--font-mono);font-size:.68rem;font-weight:500;
  letter-spacing:.22em;text-transform:uppercase;color:var(--signal);
}
.footcol__title::after{content:"";flex:1;height:1px;background:var(--line)}
.footcol__list{display:grid;gap:10px;font-size:.92rem}
.footcol__list a{
  display:inline-flex;align-items:center;gap:8px;color:#B9C8C2;
  transition:color .12s linear,transform .12s var(--ease);
}
.footcol__list a::before{content:"";width:10px;height:1px;background:#3F5A50;transition:background .12s linear,width .12s linear}
.footcol__list a:hover{color:var(--signal);transform:translateX(2px)}
.footcol__list a:hover::before{background:var(--signal);width:16px}

.contactrow{
  display:grid;grid-template-columns:58px minmax(0,1fr) auto;
  align-items:baseline;gap:10px;
  padding-block:8px;border-bottom:1px solid #E9EFEA12;
}
.contactrow:first-child{padding-top:0}
.contactrow__key{font-family:var(--font-mono);font-size:.6rem;letter-spacing:.16em;color:#5C7A70}
.contactrow__val{font-size:.88rem;color:var(--text);word-break:break-word;line-height:1.5}
.copybtn{
  padding:.26em .55em;border:1px solid var(--hair);border-radius:2px;
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.06em;color:#8FA79E;
  transition:color .12s linear,border-color .12s linear,background .12s linear;
}
.copybtn:hover{color:var(--signal);border-color:var(--signal)}
.copybtn.is-done{color:var(--pace);border-color:var(--pace);background:#FF7A3314}

.sitefoot__base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 26px;padding-block:18px 24px;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.06em;color:#6E8880;
}
.sitefoot__legal,.sitefoot__copy{margin:0;max-width:none}
.sitefoot__legal-links{display:flex;flex-wrap:wrap;gap:6px 16px}
.sitefoot__legal-links a{transition:color .12s linear}
.sitefoot__legal-links a:hover{color:var(--signal)}

/* ---------- 8. a11y / motion ---------- */
:focus-visible{outline:2px solid var(--signal);outline-offset:3px}
a:focus-visible,button:focus-visible{box-shadow:0 0 0 5px #2CE8C41F}

@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;
  }
}