/* ============================================================
   半岛官网口赛 · 共享样式 /assets/site.css
   夜间赛场控制台：墨蓝深场 · 冷青刻度 · 琥珀轮次 · 奶油纸插页
   ============================================================ */

:root{
  --ink-900:#070E17;
  --ink-700:#0E1B2A;
  --ink-500:#16293D;
  --cyan-400:#35D0D6;
  --cyan-700:#12707A;
  --amber-400:#F2B23E;
  --amber-200:#FFD27A;
  --ember-500:#E2552B;
  --cream-100:#F3EBDD;
  --brown-900:#1B1512;
  --slate-300:#9FB2C4;
  --white-soft:#E8EEF4;

  --font-display:"Arial Narrow","Helvetica Neue Condensed","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono","Courier New",monospace;
  --font-serif:Georgia,"Times New Roman","Songti SC","SimSun",serif;

  --wrap:1280px;
  --line:1px solid var(--ink-500);
  --hair:1px solid rgba(159,178,196,.22);
  --pad-x:24px;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{
  margin:0;
  background-color:var(--ink-900);
  background-image:
    repeating-linear-gradient(to right,rgba(159,178,196,.05) 0 1px,transparent 1px 96px),
    repeating-linear-gradient(to bottom,rgba(159,178,196,.035) 0 1px,transparent 1px 96px);
  color:var(--white-soft);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg,video{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1em}
h1,h2,h3,h4,h5,h6{margin:0 0 .5em}
table{border-collapse:collapse;width:100%}
hr{border:0;border-top:1px solid var(--ink-500);margin:0}
a{color:var(--cyan-400);text-decoration-color:rgba(53,208,214,.4);text-underline-offset:3px}
a:hover{color:var(--amber-400)}
:focus-visible{outline:2px solid var(--amber-400);outline-offset:3px}

/* ---------- typography ---------- */
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  font-stretch:condensed;
  letter-spacing:-.02em;
  line-height:1.1;
  color:var(--white-soft);
  margin:0 0 .55em;
}
h1{font-size:clamp(30px,3.4vw,40px)}
h2{font-size:clamp(24px,2.4vw,28px)}
h3{font-size:20px}
h4{font-size:17px;font-weight:700}
.display{font-family:var(--font-display);font-weight:900;font-stretch:condensed;letter-spacing:-.03em;line-height:1.02;font-size:clamp(34px,5.4vw,56px);margin:0 0 .4em}
.num{font-family:var(--font-mono);letter-spacing:.08em;font-variant-numeric:tabular-nums}
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cyan-400);
  margin:0 0 14px;
}
.lede{
  font-family:var(--font-serif);
  font-weight:500;
  font-size:clamp(17px,1.5vw,19px);
  line-height:1.8;
  color:var(--slate-300);
  max-width:64ch;
  margin:0 0 1.2em;
}
small,.caption{font-size:13px;line-height:1.6;color:var(--slate-300)}

/* ---------- layout ---------- */
.wrap{width:min(var(--wrap),100% - 48px);margin-inline:auto}
.section{padding:96px 0}
.section--tight{padding:48px 0}
.section-head{max-width:64ch;margin-bottom:40px}
.rule{height:1px;background:var(--ink-500);border:0;margin:0}
.stack{display:grid;gap:16px;align-content:start}
.grid{display:grid;gap:24px}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 18px;
  border:1px solid var(--ink-500);
  border-radius:0;
  background:var(--ink-700);
  color:var(--white-soft);
  font-family:var(--font-body);
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  line-height:1.2;
  text-decoration:none;
  cursor:pointer;
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.btn:hover{border-color:var(--cyan-400);color:var(--cyan-400)}
.btn-primary{background:var(--cyan-400);border-color:var(--cyan-400);color:#04141A}
.btn-primary:hover{background:var(--amber-400);border-color:var(--amber-400);color:var(--brown-900)}
.btn-ghost{background:transparent;border-color:var(--slate-300);color:var(--white-soft)}
.btn-ghost:hover{border-color:var(--amber-400);color:var(--amber-400)}
.btn-amber{background:var(--amber-400);border-color:var(--amber-400);color:var(--brown-900)}
.btn-amber:hover{background:var(--ember-500);border-color:var(--ember-500);color:var(--cream-100)}

/* ---------- header ---------- */
.skip-link{
  position:fixed;
  left:16px;
  top:-72px;
  z-index:200;
  padding:10px 16px;
  background:var(--amber-400);
  color:var(--brown-900);
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  transition:top .18s ease;
}
.skip-link:focus{top:16px;color:var(--brown-900)}

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--ink-900);
  border-bottom:1px solid var(--ink-500);
  transition:box-shadow .2s ease;
}
.site-header[data-stuck="true"]{
  box-shadow:0 1px 0 rgba(53,208,214,.22),0 16px 32px -24px rgba(0,0,0,.95);
}
.header-rail{
  width:min(var(--wrap),100% - 48px);
  margin-inline:auto;
  min-height:74px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.site-header[data-stuck="true"] .header-rail{min-height:58px}
.site-header[data-stuck="true"] .brand-sub{display:none}

.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  text-decoration:none;
  color:var(--white-soft);
}
.brand:hover{color:var(--white-soft)}
.brand-mark{
  position:relative;
  flex:none;
  width:24px;
  height:24px;
  border:1px solid var(--cyan-400);
}
.brand-mark::before{content:"";position:absolute;inset:6px;border:1px solid var(--amber-400)}
.brand-mark::after{content:"";position:absolute;left:50%;top:-4px;bottom:-4px;width:1px;margin-left:-.5px;background:var(--cyan-400);opacity:.55}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{
  font-family:var(--font-display);
  font-weight:800;
  font-stretch:condensed;
  font-size:19px;
  letter-spacing:-.01em;
  color:var(--white-soft);
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
  color:var(--slate-300);
}
.header-tail{display:flex;align-items:center;gap:18px;min-width:0}
.version-chip{
  flex:none;
  padding:6px 10px;
  border:1px solid rgba(242,178,62,.35);
  background:rgba(242,178,62,.07);
  color:var(--amber-400);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  white-space:nowrap;
}
.version-chip b{margin-left:8px;color:var(--amber-200);font-weight:700}

.primary-nav{display:block}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-list a{
  display:block;
  padding:10px 11px;
  border-bottom:1px solid transparent;
  color:var(--slate-300);
  font-size:14px;
  font-weight:500;
  text-decoration:none;
  white-space:nowrap;
  transition:color .18s ease,border-color .18s ease;
}
.nav-list a:hover{color:var(--white-soft);border-bottom-color:var(--cyan-700)}
.nav-list a[aria-current="page"]{color:var(--cyan-400);border-bottom-color:var(--cyan-400)}

.header-cta{padding:9px 14px;font-size:13px}
.nav-drawer-cta{display:none}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:8px 12px;
  border:1px solid var(--ink-500);
  border-radius:0;
  background:var(--ink-700);
  color:var(--slate-300);
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--cyan-400);color:var(--cyan-400)}
.nav-toggle-bars{display:flex;flex-direction:column;justify-content:space-between;width:18px;height:12px}
.nav-toggle-bar{display:block;height:2px;width:100%;background:var(--cyan-400);transition:transform .22s ease,opacity .22s ease}
.nav-toggle-label{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.scroll-progress{
  position:absolute;
  left:0;
  bottom:-1px;
  height:2px;
  width:0%;
  background:linear-gradient(90deg,var(--cyan-400),var(--amber-400));
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  margin-top:48px;
  padding-top:72px;
  border-top:1px solid var(--ink-500);
  background:linear-gradient(180deg,var(--ink-700) 0%,var(--ink-900) 62%);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:1px;
  background:linear-gradient(90deg,var(--cyan-400),rgba(53,208,214,0) 58%);
}
.footer-rail{width:min(var(--wrap),100% - 48px);margin-inline:auto}
.footer-top{
  display:grid;
  grid-template-columns:minmax(220px,1.05fr) minmax(0,1.9fr) minmax(240px,1.15fr);
  gap:48px 40px;
  align-items:start;
}
.footer-brand{max-width:34ch}
.footer-mark{
  display:block;
  width:20px;
  height:20px;
  margin-bottom:16px;
  border:1px solid var(--cyan-400);
  background:linear-gradient(135deg,rgba(53,208,214,.25),transparent 60%);
}
.footer-brand-name{
  font-family:var(--font-display);
  font-weight:800;
  font-stretch:condensed;
  font-size:20px;
  letter-spacing:-.01em;
  color:var(--white-soft);
  margin:0 0 10px;
}
.footer-motto{
  font-family:var(--font-serif);
  font-size:16px;
  line-height:1.75;
  color:var(--slate-300);
  margin:0 0 10px;
}
.footer-hint{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--cyan-700);
  margin:0;
}
.footer-groups{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px 24px}
.footer-group-title{
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--amber-400);
  margin:0 0 14px;
}
.footer-links li{margin:0}
.footer-links a{
  display:inline-block;
  padding:5px 0;
  border-bottom:1px solid transparent;
  color:var(--slate-300);
  font-size:14px;
  text-decoration:none;
  transition:color .18s ease,border-color .18s ease;
}
.footer-links a:hover{color:var(--cyan-400);border-bottom-color:var(--cyan-700)}
.footer-contact{display:flex;flex-direction:column;gap:0}
.contact-list{margin:0 0 14px}
.contact-item{display:grid;grid-template-columns:52px 1fr;gap:10px;padding:7px 0;border-bottom:var(--hair)}
.contact-key{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--slate-300);
  padding-top:2px;
}
.contact-value{font-size:14px;color:var(--white-soft);word-break:break-word}
.contact-note{font-size:13px;line-height:1.6;color:var(--slate-300);margin:0}
.footer-band{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 28px;
  margin-top:56px;
  padding:20px 0 28px;
  border-top:1px solid var(--ink-500);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--slate-300);
}
.footer-domain{color:var(--cyan-400)}
.footer-icp,.footer-year{color:var(--slate-300)}

/* ---------- components ---------- */
.panel{background:var(--ink-700);border:1px solid var(--ink-500);padding:24px}
.panel-head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  padding-bottom:12px;
  margin-bottom:16px;
  border-bottom:1px solid var(--ink-500);
}
.paper{
  background:var(--cream-100);
  border:1px solid var(--brown-900);
  color:var(--brown-900);
  padding:24px;
}
.paper h1,.paper h2,.paper h3,.paper h4,.paper .display{color:var(--brown-900)}
.paper .eyebrow{color:#8A4A1E}
.paper a{color:#8A3A12;text-decoration-color:rgba(138,58,18,.45)}
.paper .lede,.paper small,.paper .caption{color:#4A3B32}
.tag{
  display:inline-block;
  padding:4px 8px;
  border:1px solid var(--ink-500);
  background:var(--ink-900);
  color:var(--slate-300);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
}
.chip{
  display:inline-block;
  padding:3px 8px;
  border:1px solid rgba(242,178,62,.4);
  background:rgba(242,178,62,.1);
  color:var(--amber-400);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
}
.diff{color:var(--ember-500)}
.stat{border-left:2px solid var(--cyan-400);padding:4px 0 4px 14px}
.stat-num{
  display:block;
  font-family:var(--font-mono);
  font-size:30px;
  letter-spacing:.08em;
  color:var(--amber-400);
  line-height:1.2;
}
.stat-label{
  display:block;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--slate-300);
}
.data-table{font-size:14px}
.data-table th,.data-table td{
  padding:12px 14px;
  border-bottom:1px solid var(--ink-500);
  text-align:left;
  vertical-align:top;
}
.data-table th{
  background:var(--ink-500);
  color:var(--slate-300);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.1em;
}
.data-table tbody tr:hover td{background:rgba(53,208,214,.05)}
.data-table--paper{background:var(--cream-100);color:var(--brown-900);border:1px solid var(--brown-900)}
.data-table--paper th{background:transparent;color:var(--brown-900);border-bottom:1px solid rgba(27,21,18,.45)}
.data-table--paper td{border-bottom:1px solid rgba(27,21,18,.18)}
.data-table--paper tbody tr:hover td{background:rgba(27,21,18,.05)}
.meter{position:relative;height:4px;background:var(--ink-500);overflow:hidden}
.meter-fill{display:block;height:100%;background:linear-gradient(90deg,var(--cyan-400),var(--amber-400))}
.node{
  position:relative;
  padding:16px 18px;
  border:1px solid var(--ink-500);
  background:var(--ink-700);
}
.node::before{
  content:"";
  position:absolute;
  left:-5px;
  top:22px;
  width:8px;
  height:8px;
  background:var(--cyan-400);
}
.connector{height:1px;background:linear-gradient(90deg,var(--cyan-700),rgba(18,112,122,0));border:0;margin:0}
.band{
  display:flex;
  gap:24px;
  overflow-x:auto;
  padding-bottom:16px;
  scroll-snap-type:x proximity;
  cursor:grab;
  -webkit-overflow-scrolling:touch;
}
.band[data-dragging="true"]{cursor:grabbing;scroll-snap-type:none}
.band>*{flex:0 0 min(320px,78vw);scroll-snap-align:start}
.band::-webkit-scrollbar{height:6px}
.band::-webkit-scrollbar-track{background:var(--ink-500)}
.band::-webkit-scrollbar-thumb{background:var(--cyan-700)}
.rail{
  position:sticky;
  top:104px;
  align-self:start;
  border-left:1px solid var(--ink-500);
  padding-left:16px;
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:0 0 24px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--slate-300);
}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--ink-500)}
.crumbs a{color:var(--slate-300);text-decoration:none}
.crumbs a:hover{color:var(--cyan-400)}
.crumbs [aria-current="page"]{color:var(--amber-400)}

/* ---------- media ---------- */
.media-figure{margin:0}
.media{
  position:relative;
  overflow:hidden;
  border:1px solid var(--ink-500);
  background:var(--ink-700);
}
.media img{width:100%;height:100%;object-fit:cover;filter:saturate(.72) contrast(1.05) brightness(.92)}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,14,23,0) 46%,rgba(7,14,23,.6));
  pointer-events:none;
}
.media--wide{aspect-ratio:16/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media--band{aspect-ratio:21/9}
.media-tick{
  position:absolute;
  left:0;
  top:0;
  z-index:2;
  width:14px;
  height:14px;
  border-left:2px solid var(--amber-400);
  border-top:2px solid var(--amber-400);
}
.media-caption{margin-top:10px;font-size:13px;line-height:1.6;color:var(--slate-300)}

/* ---------- motion ---------- */
.reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .24s ease,transform .24s ease;
  transition-delay:var(--d,0ms);
}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .version-chip{display:none}
}
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .primary-nav{
    position:fixed;
    top:0;
    right:0;
    z-index:90;
    width:min(340px,86vw);
    height:100vh;
    padding:92px 24px 32px;
    background:var(--ink-700);
    border-left:1px solid var(--ink-500);
    overflow-y:auto;
    transform:translateX(100%);
    transition:transform .24s ease;
    box-shadow:-24px 0 48px -32px rgba(0,0,0,.9);
  }
  .primary-nav[data-open="true"]{transform:translateX(0)}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list a{
    padding:16px 4px;
    border-bottom:var(--hair);
    font-size:16px;
    white-space:normal;
  }
  .nav-list a[aria-current="page"]{border-bottom-color:var(--cyan-400)}
  .nav-drawer-cta{display:inline-flex;margin-top:24px}
  .header-rail,.footer-rail,.wrap{width:min(var(--wrap),100% - 40px)}
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
  .footer-contact{grid-column:1 / -1}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .section{padding:72px 0}
  .rail{position:static;top:auto}
}
@media (max-width:859px){
  .header-cta{display:none}
}
@media (max-width:719px){
  .wrap,.header-rail,.footer-rail{width:100% - 32px}
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .footer-groups{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-top{grid-template-columns:minmax(0,1fr)}
  .footer-contact{grid-column:auto}
  .section{padding:56px 0}
  .section--tight{padding:36px 0}
  .band{gap:16px}
  .band>*{flex-basis:min(280px,84vw)}
  .display{font-size:clamp(32px,9vw,40px)}
}
@media (max-width:479px){
  .footer-groups{grid-template-columns:minmax(0,1fr)}
  .contact-item{grid-template-columns:minmax(0,1fr);gap:2px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none}
  .primary-nav{transition:none}
}