/* ===========================================================
   AK赛事 · 共享样式  /assets/site.css
   技术蓝图网格 + 竞技场夜光 · 移动优先
   =========================================================== */

/* ---------- reset ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; }
body,h1,h2,h3,h4,h5,p,dl,dd,dt,figure,blockquote{ margin:0; }
ul,ol{ margin:0; padding:0; list-style:none; }
img,svg,video{ display:block; max-width:100%; height:auto; }
button,input,select,textarea{ font:inherit; color:inherit; }
button{ background:none; border:0; cursor:pointer; }
a{ color:var(--lime); text-decoration:none; }
a:hover{ color:var(--lime); }

/* ---------- tokens ---------- */
:root{
  --ink:#0A0C0F;
  --char:#14181D;
  --steel:#1F252B;
  --lime:#C7FF3C;
  --orange:#FF6A1A;
  --silver:#9AA6B2;
  --mist:#E8EDF2;
  --pulse:#2BE0C8;
  --line:#2A3138;

  --rail-w:264px;
  --radius:3px;
  --grid:72px;

  --font-display:'Barlow Condensed','Oswald','Noto Sans SC',sans-serif;
  --font-num:'JetBrains Mono','SFMono-Regular',ui-monospace,monospace;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;

  --ease:cubic-bezier(.22,.61,.36,1);
  --scroll-progress:0;
}

/* ---------- base ---------- */
body{
  min-height:100vh;
  background-color:var(--ink);
  background-image:
    repeating-linear-gradient(90deg, rgba(42,49,56,.55) 0 1px, transparent 1px var(--grid)),
    repeating-linear-gradient(0deg, rgba(42,49,56,.38) 0 1px, transparent 1px var(--grid));
  color:var(--silver);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
@media (min-width:768px){ body{ --grid:96px; } }

h1,h2,h3,h4{ color:var(--mist); font-weight:500; line-height:1.15; }
strong{ color:var(--mist); font-weight:600; }

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

#main-content{ display:block; scroll-margin-top:88px; }

/* ---------- utilities ---------- */
.index{
  margin:0;
  font-size:11px;
  line-height:1.6;
  letter-spacing:.18em;
  color:var(--silver);
  text-transform:uppercase;
}
.num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.display{
  font-family:var(--font-display);
  font-weight:300;
  text-transform:uppercase;
  letter-spacing:-.02em;
  line-height:.9;
  font-size:clamp(56px,9vw,148px);
  color:var(--mist);
}
.h1{
  font-family:var(--font-display);
  font-weight:400;
  font-size:clamp(32px,4.4vw,60px);
  line-height:1.05;
  letter-spacing:-.01em;
  color:var(--mist);
}
.h2{ font-size:24px; line-height:1.3; color:var(--mist); }
.h3{ font-size:18px; line-height:1.4; color:var(--mist); }

.prose{ max-width:66ch; }
.prose p{ margin:0 0 1.15em; }
.prose p:last-child{ margin-bottom:0; }
.prose a{ border-bottom:1px solid rgba(199,255,60,.35); }

/* ---------- layout ---------- */
.container{
  width:100%;
  max-width:1180px;
  margin-inline:auto;
  padding-inline:16px;
}
@media (min-width:768px){ .container{ padding-inline:28px; } }
@media (min-width:1024px){ .container{ padding-inline:40px; } }

.section{ padding:48px 0; }
@media (min-width:1024px){ .section{ padding:72px 0; } }

.section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:10px 14px;
  margin-bottom:22px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
}

.grid{ display:grid; gap:16px; }
@media (min-width:640px){
  .grid--2{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .grid--3{ grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (min-width:1024px){
  .grid--3{ grid-template-columns:repeat(3,minmax(0,1fr)); }
  .grid{ gap:20px; }
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 20px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:rgba(31,37,43,.62);
  color:var(--mist);
  font-size:14px;
  letter-spacing:.08em;
  line-height:1.2;
  transition:transform .16s var(--ease), border-color .16s var(--ease),
             background-color .16s var(--ease), color .16s var(--ease);
}
.btn:hover{ transform:translateY(-2px); border-color:var(--lime); color:var(--mist); }
.btn--primary{
  background:var(--lime);
  border-color:var(--lime);
  color:var(--ink);
  font-weight:500;
}
.btn--primary:hover{ background:#d8ff6b; color:var(--ink); }
.btn--ghost{ background:transparent; }

/* ---------- breadcrumb ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:11px;
  letter-spacing:.18em;
  color:var(--silver);
}
.breadcrumb a{ color:var(--silver); }
.breadcrumb a:hover{ color:var(--lime); }
.breadcrumb__sep{ color:rgba(154,166,178,.45); }

/* ---------- card ---------- */
.card{
  position:relative;
  padding:18px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(20,24,29,.92),rgba(10,12,15,.92));
  transition:transform .16s var(--ease), border-color .16s var(--ease);
}
.card:hover{ transform:translateY(-2px); border-color:var(--lime); }
.card__index{ margin-bottom:10px; }
.card__title{
  font-size:18px;
  line-height:1.35;
  color:var(--mist);
  margin-bottom:8px;
}
.card__body{ font-size:14px; }
.card__body p{ margin:0 0 .7em; }

/* ---------- chips ---------- */
.chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  padding-bottom:4px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 13px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(20,24,29,.72);
  color:var(--silver);
  font-size:11px;
  letter-spacing:.18em;
  line-height:1.4;
  white-space:nowrap;
  transition:background-color .16s var(--ease), border-color .16s var(--ease),
             color .16s var(--ease);
}
.chip:hover{ border-color:var(--lime); color:var(--mist); }
.chip[aria-pressed="true"],
.chip.is-active{
  background:var(--lime);
  border-color:var(--lime);
  color:var(--ink);
}

/* ---------- accordion ---------- */
.accordion{ border-top:1px solid var(--line); }
.accordion__item{ border-bottom:1px solid var(--line); }
.accordion__btn{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:15px 2px;
  text-align:left;
  color:var(--mist);
  font-size:16px;
  line-height:1.5;
  transition:color .16s var(--ease);
}
.accordion__btn:hover{ color:var(--lime); }
.accordion__panel{ display:none; padding:2px 2px 18px; }
.accordion__panel p{ margin:0 0 .9em; max-width:64ch; }
.accordion__item[data-open] .accordion__panel{ display:block; }
.accordion__item[data-open] .accordion__btn{ color:var(--lime); }

/* ---------- media ---------- */
.media{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--char);
}
.media img{ width:100%; height:100%; object-fit:cover; }
.media--wide{ aspect-ratio:21/9; }
.media--square{ aspect-ratio:1/1; }
.media--tall{ aspect-ratio:4/5; }
.media__tag{
  position:absolute;
  left:10px;
  bottom:10px;
  padding:3px 9px;
  border-radius:999px;
  background:rgba(10,12,15,.78);
  color:var(--lime);
  font-size:10px;
  letter-spacing:.16em;
}

/* ---------- reveal ---------- */
html.js [data-reveal]{ opacity:0; transform:translateY(10px); }
html.js [data-reveal].is-in{
  opacity:1;
  transform:none;
  transition:opacity .34s var(--ease), transform .34s var(--ease);
}

/* ===========================================================
   HEADER — 框架式导航
   =========================================================== */
.skip-link{
  position:absolute;
  left:12px;
  top:-56px;
  z-index:200;
  padding:10px 16px;
  background:var(--lime);
  color:var(--ink);
  font-size:13px;
  letter-spacing:.06em;
  border-radius:var(--radius);
  transition:top .16s var(--ease);
}
.skip-link:focus{ top:10px; }

.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(10,12,15,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:linear-gradient(90deg,var(--pulse),var(--lime));
  transform:scaleX(var(--scroll-progress));
  transform-origin:0 50%;
  opacity:.9;
  pointer-events:none;
}

.rail{
  display:grid;
  grid-template-columns:1fr auto;
  grid-template-areas:
    "brand toggle"
    "score score"
    "nav nav";
  align-items:center;
  gap:0 12px;
  padding:0 16px;
}

/* brand */
.rail__brand{
  grid-area:brand;
  display:flex;
  align-items:center;
  gap:10px;
  min-height:54px;
  padding:8px 0;
}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:9px;
  color:var(--mist);
}
.brand__mark{
  display:inline-block;
  padding:3px 9px 4px 8px;
  background:var(--lime);
  color:var(--ink);
  font-family:var(--font-display);
  font-weight:600;
  font-size:21px;
  line-height:1;
  letter-spacing:.04em;
  clip-path:polygon(0 0,100% 0,88% 100%,0 100%);
}
.brand__text{
  font-family:var(--font-display);
  font-size:18px;
  line-height:1;
  letter-spacing:.16em;
}
.rail__index{ display:none; }

/* toggle */
.nav-toggle{
  grid-area:toggle;
  justify-self:end;
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:9px 12px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  color:var(--mist);
  font-size:12px;
  letter-spacing:.16em;
  line-height:1;
  transition:border-color .16s var(--ease), color .16s var(--ease);
}
.nav-toggle:hover{ border-color:var(--lime); color:var(--lime); }
.nav-toggle__text{ display:inline-block; }
.nav-toggle__icon{
  position:relative;
  display:block;
  width:16px;
  height:10px;
}
.nav-toggle__icon::before,
.nav-toggle__icon::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:1px;
  background:var(--lime);
  transition:transform .2s var(--ease), top .2s var(--ease), bottom .2s var(--ease);
}
.nav-toggle__icon::before{ top:0; }
.nav-toggle__icon::after{ bottom:0; }
.site-header[data-open] .nav-toggle__icon::before{ top:4px; transform:rotate(45deg); }
.site-header[data-open] .nav-toggle__icon::after{ bottom:5px; transform:rotate(-45deg); }
.site-header[data-open] .nav-toggle{ border-color:var(--lime); color:var(--lime); }

/* nav */
.site-nav{
  grid-area:nav;
  max-height:0;
  overflow:hidden;
  transition:max-height .3s var(--ease);
}
.site-header[data-open] .site-nav{
  max-height:min(66vh,460px);
  overflow-y:auto;
}
.site-nav__list{ display:flex; flex-direction:column; padding-bottom:10px; }
.site-nav__item{ display:block; }
.site-nav__link{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  padding:14px 10px 14px 14px;
  border-top:1px solid var(--line);
  color:var(--silver);
  font-size:14px;
  letter-spacing:.06em;
  line-height:1.3;
  transition:color .16s var(--ease), background-color .16s var(--ease);
}
.site-nav__link::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:3px;
  height:0;
  background:var(--lime);
  transform:translateY(-50%);
  transition:height .16s var(--ease);
}
.site-nav__link:hover{ color:var(--mist); background-color:rgba(31,37,43,.5); }
.site-nav__link:hover::before{ height:14px; }
.site-nav__link[aria-current="page"]{
  color:var(--mist);
  background-color:rgba(199,255,60,.07);
}
.site-nav__link[aria-current="page"]::before{ height:20px; }
.site-nav__link[aria-current="page"] .site-nav__no{ color:var(--lime); opacity:1; }
.site-nav__no{
  font-family:var(--font-num);
  font-size:10px;
  letter-spacing:0;
  color:var(--silver);
  opacity:.55;
}
.site-nav__label{ flex:1 1 auto; }

/* scorebar */
.scorebar{
  grid-area:score;
  display:flex;
  align-items:center;
  gap:14px;
  margin:0 -16px;
  padding:8px 16px;
  border-top:1px solid var(--line);
  background:rgba(20,24,29,.72);
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.scorebar::-webkit-scrollbar{ display:none; }
.scorebar__index{ display:none; }
.scorebar__list{
  display:flex;
  align-items:center;
  gap:18px;
}
.scorebar__row{
  display:flex;
  align-items:center;
  gap:9px;
  white-space:nowrap;
}
.scorebar__round{
  font-size:10px;
  color:var(--pulse);
}
.scorebar__pair{
  font-size:12px;
  color:var(--mist);
}
.scorebar__tag{
  display:none;
}
.scorebar__meta{
  margin:0 0 0 auto;
  padding-left:14px;
  font-size:10px;
  letter-spacing:.16em;
  color:var(--silver);
  white-space:nowrap;
}

/* ===========================================================
   FOOTER
   =========================================================== */
.site-footer{
  position:relative;
  margin-top:64px;
  padding-top:44px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(20,24,29,.94),rgba(10,12,15,1));
}
.site-footer__grid{
  display:grid;
  gap:32px;
  padding-bottom:34px;
}
@media (min-width:640px){
  .site-footer__grid{ grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (min-width:960px){
  .site-footer__grid{ grid-template-columns:1.1fr .9fr 1.4fr; gap:44px; padding-bottom:44px; }
}

.foot-block__title{
  margin:0 0 14px;
  color:var(--lime);
}
.foot-block__line{
  margin:14px 0 0;
  max-width:34ch;
  font-size:14px;
  color:var(--silver);
}
.foot-block__icp{
  margin:12px 0 0;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--silver);
}
.foot-block__note{
  margin:14px 0 0;
  max-width:42ch;
  font-size:12px;
  line-height:1.7;
  color:rgba(154,166,178,.85);
}

.foot-links{
  display:flex;
  flex-direction:column;
  gap:9px;
}
.foot-links a{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:var(--silver);
  font-size:14px;
  transition:color .16s var(--ease);
}
.foot-links a::before{
  content:"";
  display:block;
  width:6px;
  height:1px;
  background:var(--line);
  transition:width .16s var(--ease), background-color .16s var(--ease);
}
.foot-links a:hover{ color:var(--mist); }
.foot-links a:hover::before{ width:16px; background:var(--lime); }

.foot-data{
  display:grid;
  gap:12px;
  margin-top:16px;
}
.foot-data__row{ display:block; }
.foot-data dt{
  font-size:10px;
  letter-spacing:.18em;
  color:rgba(154,166,178,.72);
}
.foot-data dd{
  margin:3px 0 0;
  color:var(--mist);
  font-size:14px;
  line-height:1.5;
  word-break:break-all;
}

.site-footer__base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  padding-top:16px;
  padding-bottom:26px;
  border-top:1px solid var(--line);
}
.foot-copy{
  margin:0;
  font-size:12px;
  letter-spacing:.04em;
  color:var(--silver);
}
.legal-links{
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
}
.legal-links a{
  font-size:12px;
  letter-spacing:.08em;
  color:var(--silver);
}
.legal-links a:hover{ color:var(--lime); }

/* ===========================================================
   DESKTOP FRAME（≥1024px：导航即左侧边框）
   =========================================================== */
@media (min-width:1024px){
  body{ padding-left:var(--rail-w); }

  .site-header{
    position:fixed;
    top:0;
    bottom:0;
    left:0;
    right:auto;
    width:var(--rail-w);
    border-bottom:0;
    border-right:1px solid var(--line);
    background:rgba(10,12,15,.96);
  }
  .site-header::after{
    left:auto;
    right:-1px;
    top:0;
    bottom:0;
    width:2px;
    height:auto;
    background:linear-gradient(180deg,var(--pulse),var(--lime));
    transform:scaleY(var(--scroll-progress));
    transform-origin:50% 0;
  }

  .rail{
    display:flex;
    flex-direction:column;
    align-items:stretch;
    height:100%;
    gap:0;
    padding:26px 20px 20px;
  }
  .rail__brand{
    display:block;
    min-height:0;
    padding:0;
  }
  .rail__index{
    display:block;
    margin:14px 0 0;
    max-width:190px;
    line-height:1.7;
    color:rgba(154,166,178,.8);
  }

  .nav-toggle{ display:none; }

  .site-nav{
    max-height:none;
    overflow:visible;
    margin-top:28px;
    transition:none;
  }
  .site-nav__list{ padding-bottom:0; gap:2px; }
  .site-nav__link{
    padding:11px 10px 11px 14px;
    border-top:0;
    font-size:14px;
  }
  .site-nav__link + .site-nav__link{ margin-top:0; }
  .site-nav__item + .site-nav__item .site-nav__link{
    border-top:1px solid rgba(42,49,56,.75);
  }

  .scorebar{
    margin:auto 0 0;
    padding:14px;
    border:1px solid var(--line);
    border-radius:var(--radius);
    background:linear-gradient(180deg,rgba(31,37,43,.74),rgba(20,24,29,.6));
    overflow:visible;
  }
  .scorebar__index{
    display:block;
    margin:0 0 12px;
    color:var(--pulse);
  }
  .scorebar__list{
    flex-direction:column;
    align-items:stretch;
    gap:9px;
  }
  .scorebar__row{
    display:grid;
    grid-template-columns:auto 1fr;
    grid-template-areas:
      "round tag"
      "pair pair";
    gap:4px 8px;
    align-items:center;
    padding-bottom:9px;
    border-bottom:1px solid rgba(42,49,56,.85);
  }
  .scorebar__row:last-child{ padding-bottom:0; border-bottom:0; }
  .scorebar__round{ grid-area:round; font-size:10px; }
  .scorebar__pair{ grid-area:pair; font-size:12px; white-space:normal; }
  .scorebar__tag{
    grid-area:tag;
    justify-self:end;
    display:inline-block;
    padding:2px 7px;
    border:1px solid var(--line);
    border-radius:999px;
    color:var(--silver);
    font-size:10px;
    letter-spacing:.14em;
    line-height:1.5;
    white-space:nowrap;
  }
  .scorebar__tag--next{
    background:var(--lime);
    border-color:var(--lime);
    color:var(--ink);
  }
  .scorebar__meta{
    margin:12px 0 0;
    padding-left:0;
    font-size:10px;
    color:rgba(154,166,178,.85);
  }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  html.js [data-reveal]{ opacity:1 !important; transform:none !important; }
  .site-header::after{ display:none; }
  .btn:hover,
  .card:hover{ transform:none; }
}