/* ============================================================
   亚星赛场 / livepulse-yaxing.com.cn
   Shared kit: reset · tokens · typography · header · footer
   ============================================================ */

*,*::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,figure,blockquote,dl,dd{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;text-decoration:none}
table{border-collapse:collapse;width:100%}

:root{
  /* colour */
  --ink-950:#04100D;
  --pitch-900:#0A1F1A;
  --pitch-800:#12312A;
  --line-700:#1E3B34;
  --cyan-400:#35F2D0;
  --cyan-200:#A8FFF0;
  --amber-500:#FFB347;
  --signal-500:#FF4D5E;
  --paper-100:#F2F7F4;
  --muted-400:#8FA8A0;

  /* type */
  --font-display:"Barlow Condensed","Oswald","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;

  --step-12:12px;
  --step-14:14px;
  --step-16:16px;
  --step-18:18px;
  --step-24:24px;
  --step-32:32px;
  --step-44:44px;
  --step-64:64px;
  --step-88:88px;

  /* layout */
  --head-h:72px;
  --shell:1440px;
  --gutter:clamp(16px,3vw,34px);
  --ease:cubic-bezier(0.2,0.8,0.2,1);
}

/* ---------- base ---------- */
body{
  font-family:var(--font-body);
  font-size:var(--step-16);
  line-height:1.75;
  color:var(--paper-100);
  background-color:var(--ink-950);
  background-image:
    radial-gradient(1200px 620px at 12% -12%, rgba(53,242,208,.07), transparent 62%),
    radial-gradient(900px 520px at 102% 2%, rgba(255,179,71,.055), transparent 58%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  letter-spacing:-0.02em;
  line-height:1.16;
  text-wrap:balance;
}

p{line-height:1.75;text-wrap:pretty}
strong{font-weight:700;color:var(--cyan-200)}

::selection{background:var(--cyan-400);color:var(--ink-950)}

:focus-visible{
  outline:2px solid var(--cyan-400);
  outline-offset:3px;
}

/* ---------- utilities ---------- */
.lp-sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;
}

.lp-container{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.lp-section{padding-block:clamp(48px,7vw,96px)}

.lp-mono{
  font-family:var(--font-mono);
  font-size:var(--step-12);
  letter-spacing:0.06em;
  font-variant-numeric:tabular-nums;
}

.lp-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:0.2em;
  text-transform:uppercase;
  color:var(--cyan-400);
}
.lp-eyebrow::before{
  content:"";width:22px;height:1px;background:var(--cyan-400);flex:none;
}

.lp-lead{
  font-size:var(--step-18);
  line-height:1.75;
  color:var(--muted-400);
  max-width:38ch;
}

.lp-rule{
  height:7px;
  border-top:1px solid var(--line-700);
  background-image:repeating-linear-gradient(90deg,var(--line-700) 0 1px,transparent 1px 24px);
  background-size:100% 6px;
  background-position:0 1px;
  background-repeat:repeat-x;
}

.lp-section__head{
  display:grid;
  grid-template-columns:auto 1fr;
  align-items:end;
  gap:clamp(12px,2vw,26px);
  margin-bottom:clamp(22px,3vw,38px);
}
.lp-section__num{
  font-family:var(--font-mono);
  font-size:var(--step-32);
  font-weight:700;
  line-height:1;
  letter-spacing:0.02em;
  color:var(--cyan-400);
  font-variant-numeric:tabular-nums;
}
.lp-section__title{
  font-size:clamp(var(--step-24),3.4vw,var(--step-44));
  padding-bottom:2px;
  border-bottom:1px solid var(--line-700);
}

.lp-panel{
  background:var(--pitch-800);
  border:1px solid var(--line-700);
  padding:clamp(18px,2.6vw,30px);
  position:relative;
}

.lp-grid{display:grid;gap:clamp(16px,2.5vw,32px)}
.lp-grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}

/* ---------- buttons ---------- */
.lp-btn{
  position:relative;
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 22px;
  border:1px solid var(--line-700);
  background:transparent;
  color:var(--paper-100);
  font-family:var(--font-mono);
  font-size:var(--step-12);
  letter-spacing:0.12em;
  line-height:1.4;
  overflow:hidden;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.lp-btn::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(53,242,208,.22),transparent);
  transform:translateX(-101%);
  transition:transform .44s var(--ease);
  pointer-events:none;
}
.lp-btn:hover::after,.lp-btn:focus-visible::after{transform:translateX(101%)}
.lp-btn--ghost:hover,.lp-btn--ghost:focus-visible{
  color:var(--cyan-400);
  border-color:var(--cyan-400);
}
.lp-btn--solid{
  background:var(--cyan-400);
  border-color:var(--cyan-400);
  color:var(--ink-950);
  font-weight:700;
}
.lp-btn--solid:hover,.lp-btn--solid:focus-visible{
  background:var(--cyan-200);
  border-color:var(--cyan-200);
}

/* ---------- tags ---------- */
.lp-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;
  border:1px solid var(--line-700);
  border-radius:999px;
  background:rgba(53,242,208,.08);
  color:var(--cyan-200);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:0.08em;
  line-height:1.6;
  white-space:nowrap;
}
.lp-tag--amber{background:rgba(255,179,71,.1);color:var(--amber-500);border-color:rgba(255,179,71,.34)}
.lp-tag--red{background:rgba(255,77,94,.12);color:var(--signal-500);border-color:rgba(255,77,94,.36)}

/* ---------- breadcrumb ---------- */
.lp-breadcrumb{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:0.08em;
  color:var(--muted-400);
  margin-bottom:clamp(18px,2.4vw,28px);
}
.lp-breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.lp-breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.lp-breadcrumb__item::after{content:"/";color:var(--line-700)}
.lp-breadcrumb__item:last-child::after{content:""}
.lp-breadcrumb__item a{transition:color .18s var(--ease)}
.lp-breadcrumb__item a:hover{color:var(--cyan-400)}

/* ---------- section index ---------- */
.lp-index{
  position:sticky;
  top:calc(var(--head-h) + 26px);
  display:flex;flex-direction:column;gap:2px;
  padding-left:2px;
}
.lp-index__link{
  display:block;
  padding:7px 0 7px 14px;
  border-left:2px solid var(--line-700);
  font-family:var(--font-mono);
  font-size:var(--step-12);
  letter-spacing:0.06em;
  color:var(--muted-400);
  transition:color .18s var(--ease),border-color .18s var(--ease),padding-left .18s var(--ease);
}
.lp-index__link:hover{color:var(--paper-100);border-left-color:var(--cyan-200)}
.lp-index__link[data-active="true"]{
  color:var(--cyan-400);
  border-left-color:var(--cyan-400);
  padding-left:18px;
}

/* ---------- media containers (page stage) ---------- */
.lp-media{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16 / 10;
  border:1px solid var(--line-700);
  background:
    linear-gradient(135deg,var(--pitch-800) 0%,var(--pitch-900) 62%,var(--ink-950) 100%);
  overflow:hidden;
}
.lp-media img{
  width:100%;height:100%;
  object-fit:cover;
}
.lp-media::after{
  content:"";
  position:absolute;inset:0;
  background:repeating-linear-gradient(180deg,rgba(53,242,208,.055) 0 1px,transparent 1px 5px);
  pointer-events:none;
}
.lp-media--wide{aspect-ratio:21 / 9}
.lp-media--tall{aspect-ratio:3 / 4}
.lp-media--diagonal{clip-path:polygon(0 0,100% 0,100% 91%,0 100%)}
.lp-media__caption{
  display:block;
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:0.06em;
  color:var(--muted-400);
}

/* ============================================================
   HEADER
   ============================================================ */
.lp-skip{
  position:absolute;
  left:12px;top:-70px;
  z-index:200;
  padding:10px 20px;
  background:var(--cyan-400);
  color:var(--ink-950);
  font-family:var(--font-mono);
  font-size:var(--step-12);
  font-weight:700;
  letter-spacing:0.08em;
  transition:top .18s var(--ease);
}
.lp-skip:focus{top:8px}

.lp-header{
  --head-h:72px;
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(4,16,13,.94);
  border-bottom:1px solid var(--line-700);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  transition:box-shadow .24s var(--ease);
}
.lp-header[data-scrolled]{--head-h:58px;box-shadow:0 14px 34px rgba(0,0,0,.42)}

.lp-header__bar{
  position:relative;
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto auto;
  align-items:center;
  gap:clamp(10px,1.8vw,30px);
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
  min-height:var(--head-h);
  transition:min-height .24s var(--ease);
}

/* brand */
.lp-brand{
  display:flex;flex-direction:column;gap:3px;
  padding:6px 0 6px 12px;
  border-left:3px solid var(--cyan-400);
  flex:none;
}
.lp-brand__mark{
  font-family:var(--font-display);
  font-size:var(--step-24);
  font-weight:800;
  letter-spacing:0.02em;
  line-height:1;
  color:var(--paper-100);
  transition:font-size .24s var(--ease);
}
.lp-header[data-scrolled] .lp-brand__mark{font-size:var(--step-18)}
.lp-brand__meta{
  display:flex;align-items:center;gap:7px;
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:0.16em;
  line-height:1.4;
  color:var(--muted-400);
  white-space:nowrap;
}
.lp-dot{
  width:6px;height:6px;flex:none;
  background:var(--cyan-400);
  border-radius:50%;
  box-shadow:0 0 0 3px rgba(53,242,208,.16);
  animation:lp-pulse 2.6s var(--ease) infinite;
}
@keyframes lp-pulse{
  0%,100%{box-shadow:0 0 0 3px rgba(53,242,208,.16)}
  50%{box-shadow:0 0 0 6px rgba(53,242,208,.05)}
}

/* nav */
.lp-nav{justify-self:start;min-width:0}
.lp-nav__list{display:flex;align-items:center;gap:clamp(2px,.9vw,8px);flex-wrap:nowrap}
.lp-nav__item{display:flex}
.lp-nav__link{
  display:block;
  padding:8px 10px;
  border-bottom:2px solid transparent;
  font-size:var(--step-14);
  letter-spacing:0.02em;
  color:var(--muted-400);
  white-space:nowrap;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.lp-nav__link:hover{color:var(--paper-100);background:rgba(53,242,208,.07)}
.lp-nav__link[aria-current="page"]{
  color:var(--cyan-400);
  border-bottom-color:var(--cyan-400);
}

/* tools */
.lp-tools{display:flex;align-items:center;gap:6px;flex:none}
.lp-tool{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:7px 12px;
  border:1px solid var(--line-700);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:0.08em;
  line-height:1.5;
  color:var(--muted-400);
  white-space:nowrap;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.lp-tool:hover,.lp-tool:focus-visible{
  color:var(--cyan-400);
  border-color:var(--cyan-400);
  background:rgba(53,242,208,.07);
}
.lp-tool--search{min-width:118px;justify-content:flex-start;color:var(--paper-100)}
.lp-tool--sync{color:var(--amber-500);border-color:rgba(255,179,71,.32)}
.lp-tool--sync:hover,.lp-tool--sync:focus-visible{
  color:var(--amber-500);border-color:var(--amber-500);background:rgba(255,179,71,.09);
}
.lp-tool__icon{width:13px;height:13px;flex:none}

/* mobile toggle */
.lp-navtoggle{
  display:none;
  width:44px;height:44px;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid var(--line-700);
  background:rgba(18,49,42,.6);
  transition:border-color .18s var(--ease);
}
.lp-navtoggle:hover{border-color:var(--cyan-400)}
.lp-navtoggle__bar{
  display:block;
  width:18px;height:2px;
  background:var(--paper-100);
  transition:transform .22s var(--ease),opacity .18s var(--ease),background-color .18s var(--ease);
}
.lp-navtoggle[aria-expanded="true"]{border-color:var(--cyan-400)}
.lp-navtoggle[aria-expanded="true"] .lp-navtoggle__bar{background:var(--cyan-400)}
.lp-navtoggle[aria-expanded="true"] .lp-navtoggle__bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.lp-navtoggle[aria-expanded="true"] .lp-navtoggle__bar:nth-child(2){opacity:0}
.lp-navtoggle[aria-expanded="true"] .lp-navtoggle__bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* scroll progress */
.lp-progress{
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  overflow:hidden;
  pointer-events:none;
}
.lp-progress__bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--cyan-400),var(--amber-500));
  box-shadow:0 0 10px rgba(53,242,208,.7);
  transition:width .12s linear;
}

/* ============================================================
   FOOTER
   ============================================================ */
.lp-footer{
  position:relative;
  margin-top:auto;
  background:var(--pitch-900);
  border-top:1px solid var(--line-700);
  background-image:
    linear-gradient(180deg,rgba(53,242,208,.05),transparent 180px),
    repeating-linear-gradient(90deg,rgba(30,59,52,.55) 0 1px,transparent 1px 120px);
}
.lp-footer__inner{
  display:grid;
  grid-template-columns:1.25fr .85fr 1.2fr;
  gap:clamp(28px,4vw,58px);
  max-width:var(--shell);
  margin-inline:auto;
  padding:clamp(40px,6vw,72px) var(--gutter) 0;
}
.lp-footer__brand{display:flex;flex-direction:column;gap:10px}
.lp-footer__mark{
  font-family:var(--font-display);
  font-size:var(--step-32);
  font-weight:800;
  line-height:1.05;
  letter-spacing:0.02em;
  color:var(--paper-100);
}
.lp-footer__meta{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:0.18em;
  text-transform:uppercase;
  color:var(--cyan-400);
}
.lp-footer__tagline{
  max-width:26ch;
  font-size:var(--step-14);
  line-height:1.8;
  color:var(--muted-400);
  margin-bottom:4px;
}
.lp-footer__col{min-width:0}
.lp-footer__title{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:0.2em;
  color:var(--cyan-400);
  margin-bottom:14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line-700);
}
.lp-footer__list{display:flex;flex-direction:column;gap:9px}
.lp-footer__link{
  position:relative;
  display:inline-block;
  font-size:var(--step-14);
  line-height:1.6;
  color:var(--muted-400);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.lp-footer__link:hover,.lp-footer__link:focus-visible{color:var(--cyan-400);transform:translateX(3px)}
.lp-footer__link--minor{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:0.08em;
}
.lp-footer__contact .lp-footer__list{gap:14px}
.lp-footer__contact-item{display:flex;flex-direction:column;gap:2px}
.lp-footer__label{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:0.16em;
  color:var(--line-700);
  color:var(--muted-400);
  opacity:.75;
}
.lp-footer__value{
  font-family:var(--font-mono);
  font-size:var(--step-14);
  letter-spacing:0.02em;
  color:var(--amber-500);
  word-break:break-word;
  font-variant-numeric:tabular-nums;
}
.lp-footer__contact-item:nth-child(3) .lp-footer__value{
  font-family:var(--font-body);
  font-size:var(--step-14);
  color:var(--paper-100);
  letter-spacing:0.01em;
}
.lp-footer__note{
  margin-top:18px;
  padding-top:14px;
  border-top:1px dashed var(--line-700);
  font-size:var(--step-12);
  line-height:1.8;
  color:var(--muted-400);
}
.lp-footer__bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 28px;
  max-width:var(--shell);
  margin:clamp(30px,4vw,48px) auto 0;
  padding:18px var(--gutter);
  border-top:1px solid var(--line-700);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:0.08em;
  color:var(--muted-400);
}
.lp-footer__legal-links{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px}
.lp-footer__legal{
  font-variant-numeric:tabular-nums;
  color:var(--line-700);
  color:var(--muted-400);
  opacity:.85;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:1180px){
  .lp-tool--search{min-width:0}
  .lp-tool--search span{display:none}
  .lp-tool--search{padding:7px 10px}
}

@media (max-width:1024px){
  .lp-nav__link{padding:8px 7px;font-size:13px}
  .lp-tools .lp-tool--sync{display:none}
  .lp-footer__inner{grid-template-columns:1fr 1fr;gap:34px}
  .lp-footer__brand{grid-column:1 / -1}
}

@media (max-width:900px){
  .lp-header__bar{
    grid-template-columns:minmax(0,1fr) auto;
    align-items:center;
    gap:10px;
  }
  .lp-navtoggle{display:inline-flex}
  .lp-tools{display:none}
  .lp-brand__mark{font-size:var(--step-24)}
  .lp-header[data-scrolled] .lp-brand__mark{font-size:var(--step-18)}

  .lp-nav{
    position:absolute;
    top:100%;left:0;right:0;
    display:none;
    background:var(--pitch-900);
    border-bottom:1px solid var(--line-700);
    border-top:1px solid var(--line-700);
    padding:10px var(--gutter) 22px;
    max-height:calc(100vh - var(--head-h));
    overflow-y:auto;
    box-shadow:0 22px 44px rgba(0,0,0,.55);
  }
  .lp-nav[data-open="true"]{display:block;animation:lp-drop .22s var(--ease) both}
  .lp-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .lp-nav__item{display:block}
  .lp-nav__link{
    padding:14px 12px;
    border-bottom:1px solid var(--line-700);
    border-left:2px solid transparent;
    font-size:var(--step-16);
    white-space:normal;
  }
  .lp-nav__link[aria-current="page"]{
    color:var(--cyan-400);
    border-bottom-color:var(--line-700);
    border-left-color:var(--cyan-400);
    background:rgba(53,242,208,.08);
  }

  .lp-section__head{grid-template-columns:1fr;align-items:start;gap:6px}
  .lp-section__num{font-size:var(--step-24)}
  .lp-index{position:static;flex-direction:row;flex-wrap:wrap;gap:4px 6px}
  .lp-index__link{border-left:0;border-bottom:2px solid var(--line-700);padding:6px 8px}
  .lp-index__link[data-active="true"]{padding-left:8px}
}

@keyframes lp-drop{
  from{opacity:0;transform:translateY(-8px)}
  to{opacity:1;transform:translateY(0)}
}

@media (max-width:600px){
  :root{--head-h:64px}
  .lp-header{--head-h:64px}
  .lp-header[data-scrolled]{--head-h:56px}
  .lp-brand__mark{font-size:var(--step-18)}
  .lp-brand__meta{font-size:8px;letter-spacing:0.12em}
  .lp-header[data-scrolled] .lp-brand__meta{display:none}
  .lp-footer__inner{grid-template-columns:1fr;gap:30px}
  .lp-footer__bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .lp-grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .lp-btn{width:100%;justify-content:center}
}

@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;
  }
  .lp-dot{animation:none;box-shadow:0 0 0 3px rgba(53,242,208,.28)}
  .lp-btn::after{display:none}
  .lp-progress__bar{transition:none}
}