/* ============================================================
   半岛体育 · 共享样式 /assets/site.css
   墨蓝叙事 · 纸白阅读 · 信号橙定位 · 冷光青数据
   ============================================================ */

:root{
  --ink-900:#071A2B;
  --ink-700:#0E2A44;
  --ink-500:#1D4160;
  --slate-400:#7C93A8;
  --paper:#F4F6F7;
  --paper-2:#E4E9EC;
  --orange:#FF5C1A;
  --orange-soft:#FFB38A;
  --cyan:#14D3C4;
  --cyan-deep:#0B8C86;
  --ink-text:#0B1F2E;

  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shadow-hard:4px 4px 0 var(--ink-900);
  --shadow-soft:4px 4px 0 rgba(7,26,43,.35);
  --wrap:1240px;
  --gutter:clamp(16px,4vw,40px);
  --header-h:76px;
  --ease:cubic-bezier(.2,.8,.2,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 20px)}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd,dt{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{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%}
html.is-locked{overflow:hidden}

/* ---------- base type ---------- */
body{
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  color:var(--ink-text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-weight:800;
  line-height:1.15;
  letter-spacing:-.02em;
  text-wrap:balance;
}
h1{font-size:clamp(30px,4vw,48px)}
h2{font-size:clamp(24px,2.6vw,32px)}
h3{font-size:clamp(18px,1.7vw,20px)}
strong,b{font-weight:700}
small{font-size:14px}
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.04em;
}
:where(a,button,input,summary,[tabindex]):focus-visible{
  outline:2px solid var(--orange);
  outline-offset:3px;
}

/* ---------- layout primitives ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.wrap--narrow{max-width:760px}
.section{padding-block:clamp(40px,6vw,88px)}
.section--tight{padding-block:clamp(24px,4vw,48px)}
.prose p{max-width:70ch;margin-bottom:1.2em}
.prose p:last-child{margin-bottom:0}
.prose h2,.prose h3{margin-top:1.6em;margin-bottom:.6em}
.rule{height:2px;border:0;background:var(--ink-500);margin-block:clamp(20px,3vw,36px)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--cyan-deep);
  font-weight:500;
}
.eyebrow::before{
  content:"";
  width:9px;height:9px;
  background:var(--orange);
  flex:0 0 auto;
}
.eyebrow--on-dark{color:var(--cyan)}

/* ---------- grid ---------- */
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:clamp(16px,2vw,28px);
}
.col-main{grid-column:span 8;min-width:0}
.col-side{grid-column:span 4;min-width:0}
@media (max-width:900px){
  .col-main,.col-side{grid-column:span 12}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:13px 22px;
  border:2px solid var(--ink-900);
  background:var(--orange);
  color:var(--ink-900);
  font-size:16px;
  font-weight:700;
  letter-spacing:-.01em;
  text-decoration:none;
  box-shadow:var(--shadow-hard);
  transition:transform 140ms var(--ease),box-shadow 140ms var(--ease),background-color 140ms linear;
}
.btn:hover{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink-900)}
.btn:active{transform:translate(4px,4px);box-shadow:0 0 0 var(--ink-900)}
.btn--ghost{background:transparent;color:var(--ink-900)}
.btn--on-dark{
  background:var(--cyan);
  color:var(--ink-900);
  border-color:var(--paper);
  box-shadow:4px 4px 0 var(--orange);
}
.btn--on-dark:hover{box-shadow:2px 2px 0 var(--orange)}

/* ---------- tags / batch ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  border:2px solid var(--ink-900);
  background:var(--paper-2);
  color:var(--ink-text);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  line-height:1.6;
}
.tag--signal{background:var(--orange);color:var(--ink-900)}
.tag--cyan{
  background:transparent;
  border-color:var(--cyan);
  color:var(--cyan);
}
.batch{
  display:inline-flex;
  align-items:center;
  padding:2px 8px;
  background:var(--orange);
  color:var(--ink-900);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  font-variant-numeric:tabular-nums;
}

/* ---------- cards ---------- */
.card{
  position:relative;
  background:var(--paper);
  border:2px solid var(--ink-900);
  box-shadow:var(--shadow-hard);
  padding:clamp(18px,2vw,24px);
}
.card--dark{
  background:var(--ink-700);
  border-color:var(--ink-500);
  color:var(--paper);
  box-shadow:var(--shadow-soft);
}
.card--offset{transform:translate(-6px,6px)}
.card__title{
  font-size:19px;
  font-weight:800;
  line-height:1.28;
  letter-spacing:-.02em;
}
.card__meta{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--cyan-deep);
  margin-bottom:10px;
}
.card--dark .card__meta{color:var(--cyan)}

/* ---------- figure ---------- */
.figure{
  position:relative;
  display:block;
  overflow:hidden;
  border:2px solid var(--ink-900);
  background:var(--ink-700);
  box-shadow:var(--shadow-hard);
  aspect-ratio:16/10;
}
.figure__media{display:block;width:100%;height:100%;object-fit:cover}
.figure__ph{
  display:flex;
  align-items:flex-end;
  width:100%;
  height:100%;
  padding:14px;
  background-color:var(--ink-700);
  background-image:radial-gradient(var(--ink-500) 1px,transparent 1px);
  background-size:14px 14px;
  color:var(--slate-400);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
}
.figure--skew{clip-path:polygon(0 0,100% 0,100% 92%,0 100%)}
.figure--tall{aspect-ratio:4/5}
.figure--wide{aspect-ratio:21/9}

/* ---------- data bars ---------- */
.data-track{
  position:relative;
  height:10px;
  background:var(--paper-2);
  border:2px solid var(--ink-900);
  overflow:hidden;
}
.data-track--on-dark{
  background:var(--ink-700);
  border-color:var(--ink-500);
}
.data-bar{
  display:block;
  height:100%;
  width:0;
  background:var(--cyan-deep);
  transition:width 600ms var(--ease);
}
.data-track--on-dark .data-bar{background:var(--cyan)}

/* ---------- hero bleed ---------- */
[data-hero]{
  margin-top:calc(var(--header-h) * -1);
  padding-top:var(--header-h);
}

/* ============================================================
   HEADER
   ============================================================ */
.skip-link{
  position:fixed;
  top:10px;left:10px;
  z-index:300;
  padding:10px 16px;
  background:var(--paper);
  color:var(--ink-900);
  border:2px solid var(--ink-900);
  box-shadow:var(--shadow-hard);
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  transform:translateY(-180%);
  transition:transform 160ms var(--ease);
}
.skip-link:focus-visible{transform:translateY(0)}

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--ink-900);
  color:var(--paper);
  border-bottom:2px solid var(--ink-500);
  transition:background-color 120ms linear,border-color 120ms linear;
}
.site-header[data-overlay="true"]:not(.is-solid){
  background:transparent;
  border-bottom-color:transparent;
}
.site-header.is-solid{
  background:var(--ink-900);
  border-bottom-color:var(--ink-500);
}
.site-header__inner{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.8vw,28px);
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
  height:var(--header-h);
}

/* brand */
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:10px;
  flex:0 0 auto;
  text-decoration:none;
  color:inherit;
}
.brand__mark{
  font-size:21px;
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1;
}
.brand__tag{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--cyan);
  white-space:nowrap;
}
.brand--footer{
  flex-direction:column;
  align-items:flex-start;
  gap:8px;
}
.brand--footer .brand__mark{font-size:24px}

/* nav */
.site-nav{
  display:flex;
  align-items:center;
  margin-left:auto;
}
.site-nav__list{
  display:flex;
  align-items:center;
  gap:2px;
}
.site-nav__link{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  padding:9px 12px;
  font-size:15px;
  font-weight:600;
  color:var(--paper);
  text-decoration:none;
  border-bottom:2px solid transparent;
  transition:color 140ms linear,border-color 140ms linear,background-color 140ms linear;
}
.site-nav__idx{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.08em;
  color:var(--slate-400);
  font-variant-numeric:tabular-nums;
}
.site-nav__link:hover,
.site-nav__link:focus-visible{
  color:var(--orange-soft);
  border-bottom-color:var(--orange);
}
.site-nav__link[aria-current="page"]{
  border-bottom-color:var(--orange);
}
.site-nav__link[aria-current="page"] .site-nav__idx{color:var(--orange)}

.site-nav__meta{display:none}
.site-nav__meta-line{
  font-size:13px;
  line-height:1.7;
  color:var(--slate-400);
  margin-bottom:8px;
}
.site-nav__meta-line:last-child{margin-bottom:0}
.site-nav__mono{
  font-family:var(--font-mono);
  letter-spacing:.04em;
  color:var(--paper);
}

/* header tools */
.site-header__tools{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:14px;
  flex:0 0 auto;
}
.hdr-search{
  display:inline-flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-width:212px;
  padding:7px 10px;
  border:2px solid var(--ink-500);
  background:var(--ink-700);
  color:var(--slate-400);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.02em;
  text-decoration:none;
  transition:border-color 140ms linear,color 140ms linear;
}
.hdr-search:hover{border-color:var(--cyan);color:var(--paper)}
.hdr-search__label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hdr-search__key{
  color:var(--cyan);
  font-weight:600;
  letter-spacing:.1em;
  flex:0 0 auto;
}

/* toggle */
.nav-toggle{display:none}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:18px;
  height:2px;
  background:currentColor;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:currentColor;
  transition:transform 200ms var(--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)}

/* scrim */
.nav-scrim{
  position:fixed;
  inset:0;
  z-index:92;
  background:rgba(7,26,43,.66);
  opacity:0;
  pointer-events:none;
  transition:opacity 200ms var(--ease);
}
.nav-scrim[data-open="true"]{opacity:1;pointer-events:auto}

/* ---------- header / drawer behaviour ---------- */
@media (max-width:1040px){
  .hdr-search{display:none}

  .nav-toggle{
    position:fixed;
    right:18px;
    bottom:18px;
    z-index:97;
    display:inline-flex;
    align-items:center;
    gap:10px;
    padding:12px 16px;
    background:var(--orange);
    color:var(--ink-900);
    border:2px solid var(--ink-900);
    box-shadow:var(--shadow-hard);
    font-size:14px;
    font-weight:800;
    letter-spacing:.04em;
    transition:background-color 140ms linear,transform 140ms var(--ease);
  }
  .nav-toggle:active{transform:translate(2px,2px)}
  .nav-toggle[aria-expanded="true"]{background:var(--paper)}
  .nav-toggle__label{line-height:1}

  .site-nav{
    position:fixed;
    top:0;right:0;bottom:0;
    z-index:96;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    width:min(88vw,380px);
    margin-left:0;
    padding:calc(var(--header-h) + 20px) 24px 28px;
    background:var(--ink-900);
    border-left:2px solid var(--ink-500);
    box-shadow:-6px 0 0 rgba(7,26,43,.4);
    overflow-y:auto;
    transform:translateX(calc(100% + 6px));
    visibility:hidden;
    transition:transform 240ms var(--ease),visibility 0s linear 240ms;
  }
  .site-nav[data-open="true"]{
    transform:none;
    visibility:visible;
    transition:transform 240ms var(--ease),visibility 0s linear 0s;
  }
  .site-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .site-nav__link{
    display:flex;
    gap:14px;
    padding:15px 0;
    font-size:23px;
    font-weight:800;
    border-bottom:2px solid var(--ink-500);
    border-left:4px solid transparent;
    padding-left:0;
  }
  .site-nav__link:hover,
  .site-nav__link:focus-visible{
    border-bottom-color:var(--ink-500);
    border-left-color:var(--orange-soft);
    padding-left:10px;
  }
  .site-nav__link[aria-current="page"]{
    border-bottom-color:var(--ink-500);
    border-left-color:var(--orange);
    padding-left:10px;
  }
  .site-nav__idx{font-size:12px}

  .site-nav__meta{
    display:block;
    margin-top:auto;
    padding-top:24px;
    border-top:2px solid var(--ink-500);
  }
}

@media (max-width:560px){
  .brand__tag{display:none}
  .site-nav__link{font-size:20px}
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{
  background:var(--ink-900);
  color:var(--paper);
  border-top:2px solid var(--ink-500);
  padding-block:clamp(40px,6vw,72px) 28px;
}
.site-footer__grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:clamp(24px,3vw,48px);
  padding-bottom:clamp(28px,4vw,44px);
  border-bottom:2px solid var(--ink-500);
}
.site-footer__brand{min-width:0}
.site-footer__stamp{
  display:inline-block;
  margin-top:18px;
  padding:5px 10px;
  border:2px solid var(--ink-500);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--cyan);
}

.footer-col__title{
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.16em;
  color:var(--slate-400);
  margin-bottom:14px;
}
.footer-col__list{display:flex;flex-direction:column;gap:9px}
.footer-col__link{
  display:inline-block;
  font-size:15px;
  font-weight:500;
  color:var(--paper);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color 140ms linear,border-color 140ms linear;
}
.footer-col__link:hover,
.footer-col__link:focus-visible{
  color:var(--orange-soft);
  border-bottom-color:var(--orange);
}

.site-footer__contact{
  display:grid;
  grid-template-columns:200px 1fr;
  gap:clamp(16px,2vw,32px);
  padding-block:clamp(24px,3vw,36px);
  border-bottom:2px solid var(--ink-500);
}
.contact-list{display:grid;gap:10px}
.contact-list__row{
  display:grid;
  grid-template-columns:96px 1fr;
  gap:12px;
  align-items:baseline;
}
.contact-list__key{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--slate-400);
}
.contact-list__val{
  margin:0;
  font-size:15px;
  color:var(--paper);
  word-break:break-word;
}
.site-footer__note{
  margin-top:14px;
  font-size:13px;
  color:var(--slate-400);
  line-height:1.7;
}

.site-footer__legal{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  align-items:baseline;
  gap:10px 24px;
  padding-top:22px;
  font-size:13px;
  color:var(--slate-400);
  line-height:1.7;
}
.site-footer__legal-line{max-width:74ch}
.site-footer__copy{
  font-family:var(--font-mono);
  letter-spacing:.06em;
  white-space:nowrap;
}

@media (max-width:900px){
  .site-footer__grid{grid-template-columns:1fr 1fr}
  .site-footer__brand{grid-column:1 / -1}
  .site-footer__contact{grid-template-columns:1fr}
}
@media (max-width:520px){
  .site-footer__grid{grid-template-columns:1fr}
  .contact-list__row{grid-template-columns:1fr;gap:2px}
}

/* ============================================================
   BACK TO TOP
   ============================================================ */
.to-top{
  position:fixed;
  left:18px;
  bottom:18px;
  z-index:85;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  background:var(--ink-900);
  color:var(--paper);
  border:2px solid var(--paper);
  box-shadow:4px 4px 0 var(--orange);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  opacity:0;
  pointer-events:none;
  transform:translateY(10px);
  transition:opacity 200ms var(--ease),transform 200ms var(--ease);
}
.to-top.is-visible{
  opacity:1;
  pointer-events:auto;
  transform:none;
}

/* ============================================================
   accessibility
   ============================================================ */
@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;
  }
  .to-top{transform:none}
}