/* ============================================================
   平博赛场 Site Kit — /assets/site.css
   蓝图网格底 · 墨蓝分区 · 信号橙与荧光青状态色
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root{
  --pb-ink-950:#070D18;
  --pb-ink-900:#0C1526;
  --pb-line:#1B2E4D;
  --pb-signal:#FF6A2B;
  --pb-pulse:#37E6CE;
  --pb-index:#8A7BFF;
  --pb-paper:#F7F3EA;
  --pb-ash:#A8B4C4;
  --pb-tag-a:#3C6E63;
  --pb-tag-b:#5B4E7A;
  --pb-tag-c:#6E5A3C;
  --pb-font-body:"HarmonyOS Sans SC","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --pb-font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --pb-header-h:62px;
  --pb-radius:2px;
  --pb-ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%;text-size-adjust:100%}

body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dd,fieldset{margin:0;padding:0}

ul,ol{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;padding:0;cursor:pointer}

strong,b{font-weight:700}

::selection{background:var(--pb-signal);color:#0B1220}

/* ---------- 3. Base ---------- */
body{
  min-height:100vh;
  background-color:var(--pb-ink-950);
  background-image:
    linear-gradient(to right,rgba(27,46,77,.55) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(27,46,77,.38) 1px,transparent 1px);
  background-size:96px 96px,96px 96px;
  background-position:center top;
  color:var(--pb-paper);
  font-family:var(--pb-font-body);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(58% 42% at 76% -6%,rgba(55,230,206,.10),transparent 70%),
    radial-gradient(48% 38% at 4% 6%,rgba(138,123,255,.09),transparent 72%);
}

main,
#main-content{display:block;padding-top:var(--pb-header-h)}

#main-content{scroll-margin-top:calc(var(--pb-header-h) + 16px)}

:focus-visible{outline:2px solid var(--pb-pulse);outline-offset:3px;border-radius:1px}

/* ---------- 4. Layout ---------- */
.pb-container{
  width:100%;
  max-width:1280px;
  margin-inline:auto;
  padding-inline:clamp(18px,4vw,48px);
}

.pb-section{
  padding-block:clamp(44px,7vw,92px);
  border-top:1px solid var(--pb-line);
}

.pb-grid{display:grid;gap:clamp(16px,2.4vw,32px)}

.pb-grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}

.pb-span-3{grid-column:span 3}
.pb-span-4{grid-column:span 4}
.pb-span-5{grid-column:span 5}
.pb-span-6{grid-column:span 6}
.pb-span-7{grid-column:span 7}
.pb-span-8{grid-column:span 8}
.pb-span-12{grid-column:span 12}

@media (max-width:900px){
  .pb-grid--12{grid-template-columns:minmax(0,1fr)}
  .pb-span-3,.pb-span-4,.pb-span-5,.pb-span-6,.pb-span-7,.pb-span-8,.pb-span-12{grid-column:auto}
}

/* ---------- 5. Typography ---------- */
.pb-eyebrow{
  font-family:var(--pb-font-mono);
  font-size:11px;
  letter-spacing:.22em;
  color:var(--pb-pulse);
  text-transform:uppercase;
  line-height:1.6;
}

.pb-label{
  font-size:11.5px;
  letter-spacing:.18em;
  color:var(--pb-ash);
  line-height:1.6;
}

.pb-h1{
  font-size:clamp(32px,6vw,72px);
  line-height:1.03;
  font-weight:800;
  letter-spacing:-.01em;
}

.pb-h2{
  font-size:clamp(23px,3.2vw,32px);
  line-height:1.22;
  font-weight:800;
  letter-spacing:-.01em;
}

.pb-h3{
  font-size:clamp(18px,2vw,22px);
  line-height:1.34;
  font-weight:700;
}

.pb-lead{
  font-size:clamp(16px,1.5vw,19px);
  line-height:1.8;
  color:var(--pb-ash);
  max-width:38ch;
}

.pb-prose{max-width:36em;color:rgba(247,243,234,.84)}
.pb-prose p + p{margin-top:1.05em}
.pb-prose h2,
.pb-prose h3{margin-top:1.7em;margin-bottom:.45em;color:var(--pb-paper)}
.pb-prose ul{list-style:none;margin-top:.9em;display:grid;gap:.5em}
.pb-prose ul li{position:relative;padding-left:18px}
.pb-prose ul li::before{content:"";position:absolute;left:0;top:.85em;width:6px;height:1px;background:var(--pb-pulse)}
.pb-prose a{color:var(--pb-pulse);border-bottom:1px solid rgba(55,230,206,.45)}
.pb-prose a:hover{border-bottom-color:var(--pb-pulse)}

/* ---------- 6. Buttons ---------- */
.pb-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.45em;
  padding:10px 15px;
  font-size:13.5px;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.2;
  border:1px solid transparent;
  border-radius:var(--pb-radius);
  white-space:nowrap;
  transition:background-color .18s var(--pb-ease),color .18s var(--pb-ease),border-color .18s var(--pb-ease);
}

.pb-btn--signal{background:var(--pb-signal);color:#0B1220}
.pb-btn--signal:hover,
.pb-btn--signal:focus-visible{background:#FF8347}

.pb-btn--ghost{border-color:var(--pb-line);color:var(--pb-paper)}
.pb-btn--ghost:hover,
.pb-btn--ghost:focus-visible{border-color:var(--pb-pulse);color:var(--pb-pulse)}

.pb-btn--pulse{border-color:var(--pb-pulse);color:var(--pb-pulse)}
.pb-btn--pulse:hover,
.pb-btn--pulse:focus-visible{background:rgba(55,230,206,.12)}

/* ---------- 7. Skip link ---------- */
.pb-skip{
  position:fixed;
  top:10px;
  left:10px;
  z-index:200;
  padding:10px 16px;
  font-size:14px;
  font-weight:700;
  color:var(--pb-ink-950);
  background:var(--pb-paper);
  border-radius:var(--pb-radius);
  transform:translateY(-180%);
  transition:transform .2s var(--pb-ease);
}

.pb-skip:focus,
.pb-skip:focus-visible{transform:translateY(0)}

/* ---------- 8. Header ---------- */
.pb-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:80;
  background:linear-gradient(to bottom,rgba(7,13,24,.82),rgba(7,13,24,.18));
  border-bottom:1px solid transparent;
  transition:background-color .25s var(--pb-ease),border-color .25s var(--pb-ease),box-shadow .25s var(--pb-ease);
}

.pb-header[data-scrolled="true"],
.pb-header[data-open="true"]{
  background-color:rgba(7,13,24,.96);
  border-bottom-color:var(--pb-line);
  box-shadow:0 1px 0 rgba(55,230,206,.10);
}

@supports (backdrop-filter:blur(6px)){
  .pb-header[data-scrolled="true"],
  .pb-header[data-open="true"]{backdrop-filter:blur(8px)}
}

.pb-header__inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  min-height:var(--pb-header-h);
}

.pb-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:rgba(27,46,77,.65);
  pointer-events:none;
}

.pb-progress__bar{
  display:block;
  height:100%;
  width:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--pb-pulse),var(--pb-signal));
  transition:transform .1s linear;
}

/* Brand */
.pb-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:1 1 auto;
  min-width:0;
  padding-block:8px;
}

.pb-brand__mark{
  position:relative;
  flex:0 0 auto;
  width:26px;
  height:26px;
  border:1px solid var(--pb-pulse);
  border-radius:1px;
}

.pb-brand__mark::before{
  content:"";
  position:absolute;
  inset:5px;
  border:1px solid var(--pb-signal);
}

.pb-brand__mark::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:5px;
  height:5px;
  transform:translate(-50%,-50%);
  background:var(--pb-paper);
}

.pb-brand__text{display:flex;flex-direction:column;min-width:0;line-height:1.15}

.pb-brand__line{
  font-size:19px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--pb-paper);
}

.pb-brand__sub{
  font-family:var(--pb-font-mono);
  font-size:10px;
  letter-spacing:.16em;
  color:var(--pb-ash);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

/* Actions */
.pb-header__actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}

.pb-version{
  display:none;
  align-items:center;
  gap:7px;
  padding:5px 9px;
  font-family:var(--pb-font-mono);
  font-size:11px;
  letter-spacing:.05em;
  color:var(--pb-ash);
  border:1px solid var(--pb-line);
  border-radius:var(--pb-radius);
  white-space:nowrap;
}

.pb-version__dot{
  width:6px;
  height:6px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--pb-pulse);
  box-shadow:0 0 0 3px rgba(55,230,206,.16);
}

/* Nav — mobile panel (base) */
.pb-nav{
  position:absolute;
  top:100%;
  left:0;
  right:0;
  display:none;
  max-height:calc(100vh - var(--pb-header-h));
  overflow-y:auto;
  padding:6px clamp(18px,4vw,48px) 22px;
  background:rgba(9,17,30,.985);
  border-top:1px solid var(--pb-line);
  border-bottom:1px solid var(--pb-line);
  box-shadow:0 22px 44px rgba(0,0,0,.5);
}

.pb-header[data-open="true"] .pb-nav{display:block}

.pb-nav__list{display:grid;gap:0}

.pb-nav__item{border-bottom:1px solid rgba(27,46,77,.75)}
.pb-nav__item:last-child{border-bottom:0}

.pb-nav__link{
  position:relative;
  display:flex;
  align-items:center;
  gap:8px;
  padding:13px 2px;
  font-size:16px;
  color:var(--pb-ash);
  transition:color .18s var(--pb-ease);
}

.pb-nav__link::after{display:none}

.pb-nav__link:hover,
.pb-nav__link:focus-visible{color:var(--pb-paper)}

.pb-nav__link[aria-current="page"]{color:var(--pb-pulse)}

.pb-nav__link[aria-current="page"]::before{
  content:"";
  width:6px;
  height:6px;
  flex:0 0 auto;
  background:var(--pb-pulse);
}

.pb-nav__index{
  font-family:var(--pb-font-mono);
  font-size:10px;
  letter-spacing:.1em;
  color:var(--pb-index);
  min-width:20px;
}

/* Nav toggle */
.pb-nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 11px;
  font-size:11.5px;
  letter-spacing:.16em;
  color:var(--pb-paper);
  border:1px solid var(--pb-line);
  border-radius:var(--pb-radius);
  transition:border-color .18s var(--pb-ease),color .18s var(--pb-ease);
}

.pb-nav-toggle:hover,
.pb-nav-toggle:focus-visible{border-color:var(--pb-pulse);color:var(--pb-pulse)}

.pb-nav-toggle__bars{display:grid;gap:4px;width:16px}

.pb-nav-toggle__bars span{
  display:block;
  height:1px;
  background:currentColor;
  transition:transform .2s var(--pb-ease);
}

.pb-header[data-open="true"] .pb-nav-toggle__bars span:first-child{transform:translateY(2.5px) rotate(45deg)}
.pb-header[data-open="true"] .pb-nav-toggle__bars span:last-child{transform:translateY(-2.5px) rotate(-45deg)}

.pb-nav-toggle__label{line-height:1}

/* Header — desktop */
@media (min-width:480px){
  .pb-brand__sub{font-size:10.5px}
}

@media (min-width:1024px){
  :root{--pb-header-h:76px}

  .pb-header__inner{
    display:grid;
    grid-template-columns:auto 1fr auto;
    gap:clamp(14px,2vw,32px);
  }

  .pb-brand{grid-column:1;grid-row:1}

  .pb-nav-toggle{display:none}

  .pb-nav{
    position:static;
    grid-column:2;
    grid-row:1;
    display:block;
    justify-self:end;
    padding:0;
    max-height:none;
    overflow:visible;
    background:none;
    border:0;
    box-shadow:none;
  }

  .pb-nav__list{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:clamp(4px,1.1vw,18px);
    justify-content:flex-end;
  }

  .pb-nav__item{border-bottom:0}

  .pb-nav__link{
    display:inline-flex;
    align-items:baseline;
    padding:8px 4px 10px;
    font-size:14.5px;
  }

  .pb-nav__link::after{
    content:"";
    display:block;
    position:absolute;
    left:4px;
    right:4px;
    bottom:2px;
    height:2px;
    background:transparent;
    transition:background-color .18s var(--pb-ease);
  }

  .pb-nav__link:hover::after,
  .pb-nav__link:focus-visible::after{background:var(--pb-signal)}

  .pb-nav__link[aria-current="page"]{color:var(--pb-paper)}
  .pb-nav__link[aria-current="page"]::before{display:none}
  .pb-nav__link[aria-current="page"]::after{background:var(--pb-pulse)}

  .pb-header__actions{grid-column:3;grid-row:1}

  .pb-btn{padding:11px 18px;font-size:14px}
}

@media (min-width:1240px){
  .pb-nav__index{display:inline-block}
  .pb-version{display:inline-flex}
}

@media (max-width:479px){
  .pb-brand__sub{display:none}
  .pb-btn{padding:9px 12px;font-size:12.5px}
}

/* ---------- 9. Footer ---------- */
.pb-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  background:var(--pb-ink-900);
  border-top:1px solid var(--pb-line);
  color:var(--pb-paper);
}

.pb-footer__ticks{
  height:12px;
  background-image:repeating-linear-gradient(to right,var(--pb-line) 0 1px,transparent 1px 22px);
  opacity:.85;
}

.pb-footer__grid{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:clamp(24px,3vw,44px);
  padding-block:clamp(34px,5vw,60px);
}

.pb-footer__brand{max-width:36ch}

.pb-footer__logo{
  margin-top:10px;
  font-size:clamp(22px,2.6vw,27px);
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.2;
}

.pb-footer__tag{
  margin-top:6px;
  font-family:var(--pb-font-mono);
  font-size:11.5px;
  letter-spacing:.2em;
  color:var(--pb-pulse);
}

.pb-footer__note{
  margin-top:14px;
  font-size:13.5px;
  line-height:1.85;
  color:var(--pb-ash);
  max-width:30ch;
}

.pb-footer__col{min-width:0}

.pb-footer__title{
  display:flex;
  align-items:baseline;
  gap:8px;
  padding-bottom:10px;
  border-bottom:1px solid var(--pb-line);
  font-family:var(--pb-font-mono);
  font-size:11px;
  font-weight:400;
  letter-spacing:.18em;
  color:var(--pb-index);
}

.pb-footer__list{display:grid;gap:2px;margin-top:12px}

.pb-footer__link{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:6px 0;
  font-size:14px;
  color:var(--pb-ash);
  border-bottom:1px solid transparent;
  transition:color .18s var(--pb-ease),border-color .18s var(--pb-ease);
}

.pb-footer__link::before{
  content:"";
  width:5px;
  height:5px;
  flex:0 0 auto;
  background:var(--pb-line);
  transition:background-color .18s var(--pb-ease);
}

.pb-footer__link:hover,
.pb-footer__link:focus-visible{color:var(--pb-paper);border-bottom-color:var(--pb-signal)}
.pb-footer__link:hover::before,
.pb-footer__link:focus-visible::before{background:var(--pb-signal)}

.pb-footer__contact{
  grid-column:1 / -1;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(210px,1fr));
  gap:10px clamp(16px,2.4vw,32px);
  padding-top:clamp(18px,2.6vw,26px);
  border-top:1px solid var(--pb-line);
}

.pb-footer__contact-label{
  grid-column:1 / -1;
  font-family:var(--pb-font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--pb-index);
}

.pb-footer__contact-value{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  font-family:var(--pb-font-mono);
  font-size:13px;
  line-height:1.7;
  color:var(--pb-paper);
  word-break:break-word;
}

.pb-footer__contact-key{
  font-size:10.5px;
  letter-spacing:.16em;
  color:var(--pb-ash);
  padding-top:2px;
}

.pb-footer__bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  padding-block:18px;
  border-top:1px solid var(--pb-line);
  font-family:var(--pb-font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--pb-ash);
}

.pb-footer__signoff{display:inline-flex;align-items:center;gap:9px;color:var(--pb-ash)}

.pb-footer__signoff::before{
  content:"";
  width:6px;
  height:6px;
  background:var(--pb-pulse);
}

.pb-footer__icp{color:var(--pb-ash)}
.pb-footer__year{color:rgba(247,243,234,.62)}

@media (min-width:700px){
  .pb-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pb-footer__brand{grid-column:1 / -1}
}

@media (min-width:1024px){
  .pb-footer__grid{grid-template-columns:1.5fr repeat(3,minmax(0,1fr))}
  .pb-footer__brand{grid-column:auto}
}

/* ---------- 10. Shared components ---------- */
.pb-panel{
  background:var(--pb-ink-900);
  border:1px solid var(--pb-line);
  border-radius:var(--pb-radius);
  padding:clamp(18px,2.6vw,32px);
}

.pb-paper{
  position:relative;
  background:var(--pb-paper);
  color:#0B1220;
  border:1px solid rgba(11,18,32,.14);
  border-radius:var(--pb-radius);
  padding:clamp(16px,2.2vw,26px);
  box-shadow:6px 6px 0 rgba(27,46,77,.55);
}

.pb-paper .pb-label{color:rgba(11,18,32,.6)}

.pb-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 9px;
  font-size:11px;
  letter-spacing:.14em;
  line-height:1.5;
  color:var(--pb-paper);
  background:var(--pb-tag-a);
  border:1px solid rgba(247,243,234,.18);
  border-radius:var(--pb-radius);
}

.pb-tag--b{background:var(--pb-tag-b)}
.pb-tag--c{background:var(--pb-tag-c)}

.pb-tag--ghost{
  background:transparent;
  color:var(--pb-ash);
  border-color:var(--pb-line);
}

.pb-rule{
  position:relative;
  height:1px;
  margin-block:clamp(18px,3vw,34px);
  background:var(--pb-line);
}

.pb-rule::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:-4px;
  height:8px;
  background-image:repeating-linear-gradient(to right,var(--pb-line) 0 1px,transparent 1px 40px);
  opacity:.6;
}

.pb-pulse-line{
  height:2px;
  background:linear-gradient(90deg,var(--pb-line),var(--pb-pulse) 45%,var(--pb-signal) 100%);
  opacity:.9;
}

.pb-rotate-note{
  writing-mode:vertical-rl;
  font-family:var(--pb-font-mono);
  font-size:10.5px;
  letter-spacing:.3em;
  color:var(--pb-ash);
  line-height:1;
}

.pb-breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding-block:18px;
  font-family:var(--pb-font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--pb-ash);
}

.pb-breadcrumb a{border-bottom:1px solid transparent;transition:color .18s var(--pb-ease),border-color .18s var(--pb-ease)}
.pb-breadcrumb a:hover,
.pb-breadcrumb a:focus-visible{color:var(--pb-pulse);border-bottom-color:var(--pb-pulse)}

.pb-breadcrumb__sep{color:var(--pb-line)}
.pb-breadcrumb [aria-current="page"]{color:var(--pb-paper)}

/* Image containers */
.pb-figure{
  position:relative;
  margin:0;
  overflow:hidden;
  aspect-ratio:16 / 9;
  background:var(--pb-ink-900);
  border:1px solid var(--pb-line);
  border-radius:var(--pb-radius);
}

.pb-figure img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.92) contrast(1.06);
}

.pb-figure--tall{aspect-ratio:4 / 5}
.pb-figure--wide{aspect-ratio:21 / 9}

.pb-figure__caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:26px 12px 10px;
  font-family:var(--pb-font-mono);
  font-size:11px;
  letter-spacing:.1em;
  line-height:1.6;
  color:var(--pb-ash);
  background:linear-gradient(to top,rgba(7,13,24,.94),rgba(7,13,24,0));
}

.pb-figure--frame::after{
  content:"";
  position:absolute;
  inset:8px;
  border:1px solid rgba(55,230,206,.28);
  pointer-events:none;
}

/* ---------- 11. Motion ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .6s var(--pb-ease),transform .6s var(--pb-ease);
}

[data-reveal].is-inview{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }

  [data-reveal]{opacity:1;transform:none}

  .pb-progress__bar{transition:none}
}