/* ===== reset + tokens ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-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}
a{color:inherit;text-decoration:none}
[hidden]{display:none!important}

:root{
  --sea:#061826;
  --sea-2:#0D2A3F;
  --sea-3:#082334;
  --cyan:#00F0C8;
  --cyan-soft:#8CF5E6;
  --orange:#FF6A2B;
  --win:#2FD08A;
  --loss:#E8465C;
  --paper:#F2F6F8;
  --ink:#050B10;
  --mist:#93A7B6;
  --line:rgba(140,245,230,.28);
  --line-strong:rgba(0,240,200,.55);
  --shadow-hard:6px 6px 0 #030a10;
  --shadow-cyan:6px 6px 0 rgba(0,240,200,.28);
  --wrap:1220px;
  --pad:clamp(16px,4vw,48px);
  --font-display:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,"Helvetica Neue",Arial,sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

body{
  min-height:100vh;
  background:var(--sea);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:clamp(15px,1.05vw,16.5px);
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
::selection{background:var(--cyan);color:var(--sea)}
:where(a,button,input,textarea,select,summary,[tabindex]):focus-visible{
  outline:3px solid var(--cyan);
  outline-offset:3px;
}
.section--paper :focus-visible,.prose :focus-visible{outline-color:var(--ink)}

/* ===== utilities ===== */
.container{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad)}
.section{padding-block:clamp(44px,6.5vw,92px)}
.section--paper{background:var(--paper);color:var(--ink)}
.section__head{display:flex;flex-direction:column;gap:10px;margin-bottom:clamp(24px,3.4vw,44px)}
.section__title{
  font-family:var(--font-display);
  font-weight:300;
  font-size:clamp(28px,4.6vw,56px);
  letter-spacing:-.01em;
  line-height:1.08;
}
.section__lede{color:var(--mist);max-width:60ch;font-size:clamp(14px,1.1vw,16px)}
.section--paper .section__lede{color:#3c4a55}
.kicker{
  font-size:11px;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--cyan);
  font-weight:600;
}
.section--paper .kicker{color:#0b6b5d}
.index-num{
  display:block;
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(48px,8vw,104px);
  line-height:.78;
  letter-spacing:-.04em;
  color:rgba(140,245,230,.16);
}
.section--paper .index-num{color:rgba(6,24,38,.12)}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding-block:14px;
  font-size:12px;letter-spacing:.1em;color:var(--mist);
}
.breadcrumb a{color:var(--cyan-soft);border-bottom:1px solid transparent;transition:border-color .16s var(--ease),color .16s var(--ease)}
.breadcrumb a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.breadcrumb__sep{color:rgba(147,167,182,.55)}
.prose{max-width:68ch;font-size:clamp(16px,1.05vw,17.5px);line-height:1.85}
.prose > * + *{margin-top:1.1em}
.prose h2,.prose h3{font-family:var(--font-display);font-weight:600;line-height:1.3}
.prose h2{font-size:clamp(22px,2.6vw,30px)}
.prose h3{font-size:clamp(18px,2vw,22px)}
.prose a{color:var(--cyan);border-bottom:1px solid var(--line-strong)}
.section--paper .prose a{color:#0b6b5d;border-bottom-color:#0b6b5d}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:11px 18px;
  font-family:var(--font-body);
  font-size:13px;font-weight:600;letter-spacing:.1em;line-height:1.2;
  border:2px solid var(--cyan);
  color:var(--cyan);
  background:transparent;
  cursor:pointer;
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),background-color .16s var(--ease),color .16s var(--ease);
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:4px 4px 0 rgba(0,240,200,.35)}
.btn:active{transform:translate(0,0);box-shadow:none}
.btn--ghost{border-color:var(--line-strong);color:var(--cyan-soft)}
.btn--ghost:hover{color:var(--sea);background:var(--cyan-soft);border-color:var(--cyan-soft);box-shadow:4px 4px 0 rgba(3,10,16,.6)}
.btn--solid{background:var(--cyan);border-color:var(--cyan);color:var(--sea)}
.btn--solid:hover{box-shadow:4px 4px 0 rgba(3,10,16,.7)}
.btn--orange{background:var(--orange);border-color:var(--orange);color:var(--ink)}
.btn--orange:hover{box-shadow:4px 4px 0 rgba(3,10,16,.7)}

/* ===== header / masthead ===== */
.skip-link{
  position:absolute;top:0;left:0;z-index:200;
  padding:12px 18px;
  background:var(--cyan);color:var(--sea);
  font-size:13px;font-weight:700;letter-spacing:.1em;
  transform:translateY(-140%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0);outline:3px solid var(--paper);outline-offset:-6px}

.site-header{
  position:sticky;top:0;z-index:90;
  padding:18px var(--pad) 0;
  background:linear-gradient(180deg,rgba(6,24,38,.99) 0%,rgba(6,24,38,.94) 100%);
  border-bottom:2px solid var(--line);
  transition:padding .26s var(--ease),background-color .26s var(--ease);
}
@supports (backdrop-filter:blur(6px)){
  .site-header{backdrop-filter:blur(7px)}
}
.masthead{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:clamp(10px,2vw,28px);
  max-width:var(--wrap);
  margin-inline:auto;
}
.masthead__index{
  justify-self:start;
  font-size:11px;letter-spacing:.22em;line-height:1.5;
  color:var(--mist);
  max-width:19ch;
}
.masthead__brand{
  justify-self:center;
  display:grid;gap:6px;justify-items:center;text-align:center;
}
.masthead__name{
  font-family:var(--font-display);
  font-weight:300;
  font-size:clamp(26px,3.6vw,44px);
  letter-spacing:.16em;text-indent:.16em;
  line-height:1;
  color:var(--paper);
  transition:font-size .26s var(--ease),color .16s var(--ease);
}
.masthead__brand:hover .masthead__name{color:var(--cyan-soft)}
.masthead__tagline{
  font-size:11px;letter-spacing:.3em;text-indent:.3em;
  color:var(--cyan);
}
.masthead__actions{
  justify-self:end;
  display:flex;align-items:center;gap:10px;
}
.site-header[data-compact]{padding-top:8px}
.site-header[data-compact] .masthead__index,
.site-header[data-compact] .masthead__tagline{display:none}
.site-header[data-compact] .masthead__name{font-size:clamp(18px,2.1vw,24px)}
.site-header[data-compact] .btn{padding:8px 14px;font-size:12px}

.nav-toggle{
  display:none;
  align-items:center;gap:8px;
  padding:8px 12px;
  border:2px solid var(--cyan);
  color:var(--cyan);
  font-size:11px;letter-spacing:.2em;font-weight:600;
  cursor:pointer;
}
.nav-toggle__bars{
  width:18px;height:2px;background:currentColor;
  box-shadow:0 6px 0 currentColor,0 -6px 0 currentColor;
  transition:box-shadow .2s var(--ease),transform .2s var(--ease);
}
.site-header[data-open] .nav-toggle__bars{
  box-shadow:0 0 0 currentColor;
  transform:rotate(45deg);
}
.site-header[data-open] .nav-toggle{background:var(--cyan);color:var(--sea)}

.site-nav{
  max-width:var(--wrap);
  margin:14px auto 0;
  border-top:1px solid var(--line);
}
.site-nav__list{
  display:flex;flex-wrap:wrap;justify-content:center;
  gap:clamp(2px,1.4vw,22px);
}
.site-nav__item{display:flex}
.site-nav__link{
  position:relative;
  display:inline-block;
  padding:13px 6px;
  font-size:12.5px;letter-spacing:.18em;font-weight:500;
  color:var(--mist);
  transition:color .16s var(--ease);
}
.site-nav__link::after{
  content:"";position:absolute;left:6px;right:6px;bottom:6px;height:2px;
  background:var(--cyan);
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .2s var(--ease);
}
.site-nav__link:hover{color:var(--cyan-soft)}
.site-nav__link:hover::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{color:var(--cyan);font-weight:700}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1)}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:-2px;
  height:2px;
  background:var(--cyan);
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .1s linear;
  pointer-events:none;
}

/* ===== footer ===== */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  padding:clamp(40px,6vw,76px) var(--pad) 0;
  background:var(--ink);
  color:var(--paper);
  border-top:3px solid var(--cyan);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:8px;
  background:repeating-linear-gradient(90deg,var(--cyan) 0 28px,transparent 28px 56px);
  opacity:.35;
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(220px,1.05fr) minmax(0,1.75fr) minmax(220px,1fr);
  gap:clamp(24px,4vw,64px);
  max-width:var(--wrap);
  margin-inline:auto;
  padding-top:clamp(16px,2vw,28px);
}
.footer-brand__name{
  font-family:var(--font-display);
  font-weight:300;
  font-size:clamp(28px,3.4vw,42px);
  letter-spacing:.14em;
  line-height:1.1;
}
.footer-brand__tagline{
  margin-top:10px;
  font-size:11px;letter-spacing:.26em;
  color:var(--cyan);
}
.footer-brand__summary{
  margin-top:16px;
  font-size:13.5px;line-height:1.8;
  color:var(--mist);
  max-width:34ch;
}
.footer-nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(16px,2.4vw,32px);
}
.footer-group{display:flex;flex-direction:column}
.footer-group__title{
  font-size:11px;font-weight:700;letter-spacing:.24em;
  color:var(--cyan-soft);
  padding-bottom:9px;
  border-bottom:1px solid var(--line);
  margin-bottom:12px;
}
.footer-group__list{display:flex;flex-direction:column;gap:2px}
.footer-link{
  display:inline-block;
  padding:5px 0;
  font-size:13.5px;
  color:var(--mist);
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-link:hover{color:var(--cyan);border-bottom-color:var(--line-strong)}
.footer-link--small{font-size:12px;letter-spacing:.08em}
.footer-contact{display:flex;flex-direction:column;gap:8px}
.footer-contact__title{
  font-size:11px;font-weight:700;letter-spacing:.24em;
  color:var(--cyan-soft);
  padding-bottom:9px;
  border-bottom:1px solid var(--line);
  margin-bottom:4px;
}
.footer-contact__line{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;
  color:var(--mist);
}
.footer-contact__note{
  font-size:12px;line-height:1.7;
  color:rgba(147,167,182,.8);
}
.copy-chip{
  font-family:var(--font-mono);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  padding:4px 8px;
  color:var(--cyan-soft);
  background:rgba(0,240,200,.08);
  border:1px solid var(--line);
  cursor:pointer;
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.copy-chip:hover{background:rgba(0,240,200,.18);border-color:var(--line-strong)}
.copy-chip[data-copied="true"]{background:var(--cyan);color:var(--sea);border-color:var(--cyan)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 24px;
  max-width:var(--wrap);
  margin:clamp(28px,4vw,48px) auto 0;
  padding:18px 0 28px;
  border-top:1px solid var(--line);
  font-size:12px;letter-spacing:.08em;
  color:rgba(147,167,182,.85);
}
.footer-bottom__meta{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.footer-icp{color:var(--mist)}
.footer-bottom__links{display:flex;flex-wrap:wrap;gap:16px}

/* ===== cards / grid ===== */
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(14px,2vw,24px);
}
.card{
  grid-column:span 12;
  display:flex;flex-direction:column;gap:10px;
  padding:clamp(18px,2.4vw,28px);
  background:linear-gradient(158deg,var(--sea-2) 0%,var(--sea-3) 100%);
  border:2px solid var(--line-strong);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.card:hover{
  transform:translate(-3px,-3px);
  border-color:var(--cyan);
  box-shadow:var(--shadow-cyan);
}
.card__index{
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.2em;
  color:var(--orange);
}
.card__title{
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(18px,1.9vw,24px);
  line-height:1.3;
}
.card__text{font-size:14.5px;line-height:1.8;color:var(--mist)}

/* ===== tags / filter ===== */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;
  font-size:12px;letter-spacing:.12em;font-weight:600;
  color:var(--cyan-soft);
  background:transparent;
  border:1px solid var(--line);
  cursor:pointer;
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.tag:hover{border-color:var(--line-strong);color:var(--cyan)}
.tag[aria-pressed="true"],.tag.is-active{
  background:var(--cyan);color:var(--sea);border-color:var(--cyan);
}
.section--paper .tag{color:#0b6b5d;border-color:rgba(6,24,38,.3)}
.section--paper .tag[aria-pressed="true"],.section--paper .tag.is-active{background:var(--sea);color:var(--paper);border-color:var(--sea)}

/* ===== accordion ===== */
.accordion{border-top:2px solid var(--line)}
.accordion__item{border-bottom:2px solid var(--line)}
.accordion__trigger{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 4px;
  font-family:var(--font-display);
  font-size:clamp(16px,1.6vw,19px);font-weight:600;line-height:1.4;
  text-align:left;
  color:var(--paper);
  cursor:pointer;
  transition:color .16s var(--ease);
}
.accordion__trigger:hover{color:var(--cyan)}
.accordion__chevron{
  flex:none;
  width:13px;height:13px;
  border-right:2px solid var(--cyan);
  border-bottom:2px solid var(--cyan);
  transform:rotate(45deg) translate(-2px,-2px);
  transition:transform .24s var(--ease);
}
.accordion__trigger[aria-expanded="true"] .accordion__chevron{transform:rotate(-135deg) translate(-2px,-2px)}
.accordion__panel{height:0;overflow:hidden;transition:height .24s var(--ease)}
.accordion__panel-inner{padding:0 4px 20px;color:var(--mist);font-size:15px;line-height:1.8}
.section--paper .accordion{border-top-color:rgba(6,24,38,.25)}
.section--paper .accordion__item{border-bottom-color:rgba(6,24,38,.25)}
.section--paper .accordion__trigger{color:var(--ink)}
.section--paper .accordion__panel-inner{color:#3c4a55}

/* ===== timeline ===== */
.timeline{position:relative;padding-left:30px;border-left:2px dashed var(--line-strong)}
.timeline__item{position:relative;padding:0 0 30px 8px}
.timeline__item::before{
  content:"";position:absolute;left:-40px;top:7px;
  width:12px;height:12px;border-radius:50%;
  background:var(--orange);
  box-shadow:0 0 0 3px var(--sea);
}
.section--paper .timeline__item::before{box-shadow:0 0 0 3px var(--paper)}
.timeline__round{
  display:block;
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.18em;font-weight:700;
  color:var(--orange);
  margin-bottom:6px;
}

/* ===== media placeholders ===== */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  background:var(--sea-2);
  border:3px solid var(--ink);
  box-shadow:var(--shadow-hard);
}
.media--wide{aspect-ratio:16/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media__img{
  width:100%;height:100%;
  object-fit:cover;
  filter:saturate(.92) contrast(1.06);
  transition:transform .5s var(--ease);
}
.media:hover .media__img{transform:scale(1.03)}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(0deg,rgba(242,246,248,.07) 0 1px,transparent 1px 3px);
  mix-blend-mode:screen;
}
.media__caption{
  display:block;
  margin-top:8px;
  font-size:11px;letter-spacing:.16em;
  color:var(--mist);
}

/* ===== stats / scorebar ===== */
.stat{display:flex;flex-direction:column;gap:4px}
.stat__value{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(22px,3vw,34px);
  line-height:1;
  color:var(--orange);
}
.stat__label{font-size:11px;letter-spacing:.2em;color:var(--mist)}
.scorebar{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:10px 14px;
  background:rgba(13,42,63,.72);
  border:2px solid var(--line);
}
.scorebar__team{font-size:13px;letter-spacing:.1em;color:var(--paper)}
.scorebar__num{
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(20px,2.4vw,28px);line-height:1;
  color:var(--orange);
}
.scorebar__meta{font-size:11px;letter-spacing:.18em;color:var(--mist)}

/* ===== reveal ===== */
.has-js [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .32s ease-out,transform .32s ease-out;
}
.has-js [data-reveal].is-visible{opacity:1;transform:none}

/* ===== responsive ===== */
@media (min-width:900px){
  .card--wide{grid-column:span 8}
  .card--square{grid-column:span 5}
  .card--narrow{grid-column:span 3}
}
@media (max-width:1024px){
  .footer-top{grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:clamp(20px,3vw,40px)}
  .footer-contact{grid-column:1 / -1}
  .footer-contact__line{display:inline-flex;margin-right:18px}
}
@media (max-width:760px){
  .site-header{padding-top:14px}
  .nav-toggle{display:inline-flex;position:absolute;top:14px;right:var(--pad);z-index:95}
  .masthead{
    grid-template-columns:minmax(0,1fr);
    align-items:start;
    row-gap:12px;
  }
  .masthead__index{display:none}
  .masthead__brand{
    justify-self:start;
    text-align:left;
    justify-items:start;
    padding-right:88px;
  }
  .masthead__name{font-size:26px;letter-spacing:.12em;text-indent:0}
  .masthead__tagline{font-size:10px;letter-spacing:.22em;text-indent:0}
  .masthead__actions{
    justify-self:stretch;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:8px;
  }
  .masthead__actions .btn{padding:10px 8px;font-size:12px;letter-spacing:.06em}
  .site-nav{
    display:none;
    margin-top:12px;
    border-top:1px solid var(--line);
    padding-top:10px;
  }
  .site-header[data-open] .site-nav{display:block}
  .site-nav__list{
    flex-wrap:nowrap;
    justify-content:flex-start;
    gap:8px;
    overflow-x:auto;
    padding-bottom:6px;
    scrollbar-width:thin;
  }
  .site-nav__item{flex:none}
  .site-nav__link{
    padding:8px 12px;
    font-size:12px;letter-spacing:.1em;
    white-space:nowrap;
    border:1px solid var(--line);
  }
  .site-nav__link::after{display:none}
  .site-nav__link[aria-current="page"]{background:var(--cyan);color:var(--sea);border-color:var(--cyan)}
  .footer-top{grid-template-columns:minmax(0,1fr)}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .footer-nav{grid-template-columns:minmax(0,1fr)}
  .footer-contact__line{display:flex;margin-right:0}
  .media{border-width:2px;box-shadow:4px 4px 0 #030a10}
}

/* ===== motion preferences ===== */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .has-js [data-reveal]{opacity:1;transform:none}
  .card:hover,.btn:hover,.media:hover .media__img{transform:none}
}