:root{
  --ink:#0A0D10;
  --panel:#12171D;
  --cyan:#2FE6C8;
  --cyan-dim:#14705F;
  --orange:#FF7A2F;
  --orange-dim:#8A3E12;
  --text:#E8EEF3;
  --muted:#9AA7B2;
  --line:#2A333C;
  --glass:rgba(47,230,200,0.10);
  --rail-w:76px;
  --topbar-h:56px;
  --shell-max:1440px;
  --gap:clamp(16px,2.4vw,32px);
  --pad-x:clamp(16px,3vw,48px);
  --r-cut:14px;
  --t-fast:.18s;
  --t-base:.25s;
  --t-slow:.3s;
  --font-display:"Helvetica Neue Condensed","Arial Narrow","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono","DejaVu Sans Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.7;
  padding-left:var(--rail-w);
  background-image:
    radial-gradient(1200px 600px at 82% -10%,rgba(47,230,200,.10),transparent 62%),
    radial-gradient(900px 520px at 8% 108%,rgba(255,122,47,.07),transparent 60%);
  background-attachment:fixed;
}
img{max-width:100%;display:block;height:auto}
h1,h2,h3,h4{margin:0;font-family:var(--font-display);text-transform:uppercase;letter-spacing:-.01em;line-height:1.12;font-weight:700}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
a{color:var(--cyan);text-decoration:none}
a:hover{color:var(--orange)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
::selection{background:var(--orange);color:#0A0D10}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;top:8px;left:8px;z-index:200;
  transform:translateY(-200%);
  background:var(--cyan);color:#08110F;
  padding:10px 16px;font-size:14px;font-weight:700;
  clip-path:polygon(var(--r-cut) 0,100% 0,100% calc(100% - var(--r-cut)),calc(100% - var(--r-cut)) 100%,0 100%,0 var(--r-cut));
}
.skip-link:focus{transform:translateY(0);color:#08110F}

/* ---------- rail ---------- */
.rail{
  position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);z-index:120;
  display:flex;flex-direction:column;justify-content:space-between;align-items:center;
  padding:16px 0 18px;
  background:linear-gradient(180deg,rgba(18,23,29,.98),rgba(10,13,16,.98));
  border-right:1px solid var(--line);
}
.rail::after{
  content:"";position:absolute;top:0;right:-1px;width:3px;height:100%;
  background:linear-gradient(180deg,var(--cyan),rgba(47,230,200,0) 55%,rgba(255,122,47,.55));
  opacity:.55;pointer-events:none;
}
.rail__top{display:flex;flex-direction:column;align-items:center;gap:12px;width:100%}
.rail__brand{
  display:block;text-align:center;
  font-family:var(--font-display);font-weight:700;
  font-size:15px;line-height:1.16;letter-spacing:.02em;
  text-transform:uppercase;color:var(--text);
  padding:8px 4px;width:100%;
  border-bottom:1px solid var(--line);
}
.rail__brand:hover{color:var(--cyan)}
.rail__season{
  margin:0;font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;
  color:var(--muted);text-align:center;line-height:1.5;padding:0 6px;
}
.rail__season span{color:var(--cyan-dim)}
.rail__nav{width:100%;flex:1;display:flex;align-items:center;justify-content:center}
.rail__list{width:100%;display:flex;flex-direction:column;gap:2px}
.rail__link{
  position:relative;display:block;
  padding:14px 6px;
  font-family:var(--font-display);font-size:12px;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;
  color:var(--muted);text-align:center;line-height:1.25;
  border-left:3px solid transparent;
  transition:color var(--t-fast) ease,background var(--t-fast) ease,border-color var(--t-fast) ease;
}
.rail__link:hover{color:var(--text);background:rgba(47,230,200,.07)}
.rail__link[aria-current="page"]{color:var(--cyan);border-left-color:var(--orange);background:var(--glass)}
.rail__bottom{display:flex;flex-direction:column;align-items:center;gap:6px;width:100%;padding-top:12px;border-top:1px solid var(--line)}
.rail__index{font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;color:var(--cyan)}
.rail__index--dim{color:var(--muted)}

/* ---------- topbar ---------- */
.topbar-spacer{display:none}
.topbar{
  position:sticky;top:0;z-index:100;
  background:rgba(10,13,16,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.topbar__row{display:flex;align-items:center;gap:12px;padding:8px var(--pad-x);max-width:var(--shell-max);margin:0 auto}
.nav-toggle{display:none}
.groupbar{display:flex;align-items:center;gap:12px;flex:1;min-width:0}
.groupbar__inner{
  display:flex;align-items:center;gap:10px;flex:1;min-width:0;
  overflow-x:auto;scrollbar-width:thin;padding-bottom:2px;
}
.groupbar__inner::-webkit-scrollbar{height:4px}
.groupbar__inner::-webkit-scrollbar-thumb{background:var(--line);border-radius:2px}
.groupbar__label{
  font-family:var(--font-display);font-size:11px;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;color:var(--cyan-dim);flex:0 0 auto;
}
.groupbar__batch{
  flex:0 0 auto;font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;
  color:var(--cyan);padding:5px 10px;border:1px solid var(--cyan-dim);
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
}

/* ---------- segmented ---------- */
.segmented{display:flex;gap:4px;flex:0 0 auto}
.segmented__btn{
  flex:0 0 auto;padding:6px 12px;
  font-family:var(--font-display);font-size:12px;font-weight:700;
  letter-spacing:.06em;text-transform:uppercase;
  color:var(--muted);background:var(--panel);
  border:1px solid var(--line);
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
  transition:color var(--t-fast) ease,background var(--t-fast) ease,border-color var(--t-fast) ease;
}
.segmented__btn:hover{color:var(--text);border-color:var(--cyan-dim)}
.segmented__btn[aria-selected="true"]{color:#07100E;background:var(--cyan);border-color:var(--cyan)}
.segmented__btn[aria-selected="true"]:focus-visible{outline-color:var(--orange)}

/* ---------- shell & layout ---------- */
.shell{max-width:var(--shell-max);margin:0 auto;padding:var(--gap) var(--pad-x) 64px}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
.col-span-4{grid-column:span 4}
.col-span-5{grid-column:span 5}
.col-span-6{grid-column:span 6}
.col-span-7{grid-column:span 7}
.col-span-8{grid-column:span 8}
.col-span-12{grid-column:span 12}

/* ---------- type ---------- */
.display-1{font-size:44px}
.display-2{font-size:32px}
.display-3{font-size:22px}
.lede{font-size:17px;color:var(--text);line-height:1.7;max-width:62ch}
.body-text{font-size:15px;line-height:1.72;max-width:68ch;color:var(--text)}
.caption{
  font-size:13px;color:var(--muted);line-height:1.6;
  padding-left:12px;border-left:2px solid var(--cyan-dim);
}
.numeric{font-family:var(--font-mono);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.numeric--xl{font-size:56px;line-height:1}
.numeric--lg{font-size:36px;line-height:1.05}
.numeric--md{font-size:24px;line-height:1.1}
.divider-slash{display:inline-block;width:22px;height:2px;background:var(--orange);transform:skewX(-24deg);vertical-align:middle;margin-right:10px}

/* ---------- panel ---------- */
.panel{
  position:relative;background:var(--panel);
  padding:22px;
  clip-path:polygon(var(--r-cut) 0,100% 0,100% calc(100% - var(--r-cut)),calc(100% - var(--r-cut)) 100%,0 100%,0 var(--r-cut));
  border-top:1px solid var(--line);
}
.panel--overlap{margin-top:-18px;background:linear-gradient(180deg,rgba(18,23,29,.94),rgba(18,23,29,.98))}
.panel__label{
  position:absolute;top:0;right:0;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.04em;
  color:var(--cyan);background:rgba(47,230,200,.12);
  padding:4px 10px;
  clip-path:polygon(10px 0,100% 0,100% 100%,0 100%);
}
.cameo{
  display:inline-block;font-family:var(--font-mono);font-size:11px;letter-spacing:.05em;
  color:var(--text);background:var(--orange-dim);
  padding:3px 9px;
  clip-path:polygon(7px 0,100% 0,100% calc(100% - 7px),calc(100% - 7px) 100%,0 100%,0 7px);
}
.metric{display:flex;flex-direction:column;gap:4px}
.metric__value{font-family:var(--font-mono);font-weight:700;font-size:36px;line-height:1;font-variant-numeric:tabular-nums}
.metric__value--accent{color:var(--orange)}
.metric__unit{font-size:13px;color:var(--muted);font-family:var(--font-mono)}
.metric__caption{font-size:13px;color:var(--muted);line-height:1.55}

/* ---------- slash band ---------- */
.slash-band{
  position:relative;margin:40px 0;
  padding:20px var(--pad-x);
  background:linear-gradient(100deg,var(--cyan-dim),rgba(20,112,95,.25) 55%,transparent);
  transform:skewY(-2.4deg);
}
.slash-band__inner{display:flex;flex-wrap:wrap;align-items:center;gap:18px;transform:skewY(2.4deg)}
.slash-band__note{font-size:13px;color:var(--text);margin:0;max-width:70ch}
.slash-band__value{font-family:var(--font-mono);font-weight:700;font-size:24px;color:#04110E;background:var(--cyan);padding:2px 10px}

/* ---------- trajectory ---------- */
.trajectory{position:relative;height:2px;background:var(--line);margin:28px 0}
.trajectory::after{
  content:"";position:absolute;inset:0;transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan),rgba(47,230,200,0));
  transform:scaleX(0);transition:transform var(--t-slow) ease;
}
.trajectory[data-open]::after{transform:scaleX(1)}
.trajectory__node{
  position:absolute;top:-5px;width:12px;height:12px;border-radius:50%;
  background:var(--ink);border:2px solid var(--cyan-dim);
}
.trajectory__node--on{background:var(--orange);border-color:var(--orange)}
.overlay-note{
  background:var(--glass);
  border-left:2px solid var(--cyan);
  padding:12px 16px;font-size:13px;color:var(--text);line-height:1.6;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;
  font-family:var(--font-display);font-size:13px;font-weight:700;
  letter-spacing:.1em;text-transform:uppercase;
  color:#07100E;background:var(--cyan);
  clip-path:polygon(var(--r-cut) 0,100% 0,100% calc(100% - var(--r-cut)),calc(100% - var(--r-cut)) 100%,0 100%,0 var(--r-cut));
  transition:background var(--t-fast) ease,color var(--t-fast) ease,transform var(--t-fast) ease;
}
.btn:hover{background:var(--orange);color:#100A04;transform:translateY(-1px)}
.btn--ghost{
  color:var(--cyan);background:transparent;
  border:1px solid var(--cyan-dim);
}
.btn--ghost:hover{color:var(--text);background:var(--glass);border-color:var(--cyan)}
.btn--accent{background:var(--orange);color:#100A04}
.btn--accent:hover{background:var(--cyan);color:#07100E}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin:0 0 18px}
.breadcrumb__item{font-family:var(--font-mono);letter-spacing:.03em;color:var(--muted)}
.breadcrumb__item + .breadcrumb__item::before{content:"/";margin-right:8px;color:var(--line)}
.breadcrumb__item a{color:var(--muted)}
.breadcrumb__item a:hover{color:var(--cyan)}

/* ---------- page head ---------- */
.page-head{padding:var(--gap) 0 calc(var(--gap) * .5);border-bottom:1px solid var(--line);margin-bottom:var(--gap)}
.page-head__title{font-size:44px;max-width:24ch}
.page-head__meta{margin-top:12px;display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--muted);font-family:var(--font-mono)}

/* ---------- index list ---------- */
.index-list{border-top:1px solid var(--line)}
.index-list__row{
  display:grid;grid-template-columns:64px 1fr auto;gap:16px;align-items:baseline;
  padding:14px 4px;border-bottom:1px solid var(--line);
  transition:background var(--t-fast) ease;
}
.index-list__row:hover{background:rgba(47,230,200,.05)}
.index-list__row .numeric{color:var(--cyan)}

/* ---------- table ---------- */
.data-table{width:100%;border-collapse:collapse;font-size:15px}
.data-table th{
  font-family:var(--font-display);font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted);text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.data-table td{padding:11px 12px;border-bottom:1px solid var(--line);color:var(--text)}
.data-table td.numeric{font-family:var(--font-mono);font-variant-numeric:tabular-nums;text-align:right}
.data-table tbody tr:hover{background:rgba(47,230,200,.05)}

/* ---------- card flow ---------- */
.card-flow{display:flex;flex-direction:column;gap:14px}
.card-flow__item{
  background:var(--panel);padding:18px;
  clip-path:polygon(var(--r-cut) 0,100% 0,100% calc(100% - var(--r-cut)),calc(100% - var(--r-cut)) 100%,0 100%,0 var(--r-cut));
  border-left:2px solid var(--cyan-dim);
  transition:border-color var(--t-fast) ease,background var(--t-fast) ease;
}
.card-flow__item:hover{border-left-color:var(--orange);background:#161C23}

/* ---------- expandable ---------- */
.expandable{position:relative}
.expandable__trigger{
  display:flex;width:100%;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 16px;text-align:left;
  background:var(--panel);color:var(--text);font-size:15px;
  border:1px solid var(--line);
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
}
.expandable__trigger:hover{border-color:var(--cyan-dim)}
.expandable__trigger::after{content:"＋";font-family:var(--font-mono);color:var(--cyan)}
.expandable[data-open] .expandable__trigger::after{content:"－";color:var(--orange)}
.expandable__layer{
  display:none;margin-top:10px;padding:16px;
  background:var(--glass);border-left:2px solid var(--cyan);
  font-size:15px;color:var(--text);line-height:1.7;
}
.expandable[data-open] .expandable__layer{display:block}

/* ---------- media frame ---------- */
.media-frame{
  position:relative;overflow:hidden;background:#0E1318;
  aspect-ratio:16/9;
  clip-path:polygon(var(--r-cut) 0,100% 0,100% calc(100% - var(--r-cut)),calc(100% - var(--r-cut)) 100%,0 100%,0 var(--r-cut));
  border:1px solid var(--line);
}
.media-frame img{width:100%;height:100%;object-fit:cover;filter:saturate(.85) contrast(1.06) brightness(.86)}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--wide{aspect-ratio:21/9}
.media-frame__caption{
  position:absolute;left:0;bottom:0;right:0;
  padding:10px 14px;font-size:12px;color:var(--muted);
  background:linear-gradient(180deg,transparent,rgba(10,13,16,.92));
  font-family:var(--font-mono);
}

/* ---------- reveal & misc ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity var(--t-base) ease,transform var(--t-base) ease}
.reveal[data-shown]{opacity:1;transform:none}
.to-top{
  position:fixed;right:18px;bottom:18px;z-index:130;
  width:44px;height:44px;display:grid;place-items:center;
  font-family:var(--font-mono);font-size:18px;
  color:var(--cyan);background:rgba(18,23,29,.92);
  border:1px solid var(--cyan-dim);
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  opacity:0;visibility:hidden;transition:opacity var(--t-fast) ease,visibility var(--t-fast) ease;
}
.to-top[data-shown]{opacity:1;visibility:visible}
.to-top:hover{color:#07100E;background:var(--cyan)}

/* ---------- footer ---------- */
.site-foot{
  margin-top:56px;
  background:linear-gradient(180deg,rgba(18,23,29,.6),var(--panel));
  border-top:1px solid var(--line);
  position:relative;
}
.site-foot::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--cyan),transparent 42%,var(--orange-dim));
}
.site-foot__grid{
  max-width:var(--shell-max);margin:0 auto;
  padding:42px var(--pad-x) 24px;
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:var(--gap);
}
.site-foot__col--brand{max-width:46ch}
.site-foot__brand{
  font-family:var(--font-display);font-size:20px;font-weight:700;
  letter-spacing:.04em;text-transform:uppercase;color:var(--text);margin:0 0 12px;
}
.site-foot__head{
  font-family:var(--font-display);font-size:12px;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:var(--cyan);
  margin:0 0 12px;
}
.site-foot__list{display:flex;flex-direction:column;gap:8px;font-size:14px}
.site-foot__list a{color:var(--text)}
.site-foot__list a:hover{color:var(--cyan)}
.site-foot__list span{color:var(--muted)}
.site-foot__line{margin:0 0 8px;font-size:13px;line-height:1.6;color:var(--muted)}
.site-foot__line--dim{color:#6F7C87}
.site-foot__base{
  max-width:var(--shell-max);margin:0 auto;
  padding:14px var(--pad-x) 26px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;align-items:center;
}
.site-foot__base .site-foot__line{margin:0;font-family:var(--font-mono);letter-spacing:.02em}

/* ---------- tablet ---------- */
@media (max-width:1080px){
  .site-foot__grid{grid-template-columns:1fr 1fr;gap:28px}
  .display-1,.page-head__title{font-size:34px}
}
@media (max-width:900px){
  .col-span-4,.col-span-5,.col-span-6,.col-span-7,.col-span-8{grid-column:span 12}
}

/* ---------- mobile ---------- */
@media (max-width:760px){
  body{padding-left:0;padding-top:var(--topbar-h)}
  .rail{
    top:var(--topbar-h);left:0;right:auto;bottom:0;width:min(78vw,300px);
    align-items:flex-start;padding:18px 0 24px;
    transform:translateX(-102%);
    transition:transform var(--t-base) ease;
    box-shadow:18px 0 40px rgba(0,0,0,.5);
  }
  .rail[data-open]{transform:translateX(0)}
  .rail__top{align-items:flex-start;padding:0 20px;width:100%}
  .rail__brand{text-align:left;border-bottom:0;padding-left:0}
  .rail__season{text-align:left;padding:0}
  .rail__nav{align-items:flex-start;justify-content:flex-start;padding:8px 0;overflow-y:auto}
  .rail__list{gap:0}
  .rail__link{text-align:left;padding:15px 20px;font-size:14px;border-left-width:3px}
  .rail__bottom{align-items:flex-start;padding:12px 20px 0;width:100%}
  .topbar__row{padding:8px 16px;gap:10px}
  .nav-toggle{
    display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;
    padding:8px 12px;border:1px solid var(--cyan-dim);color:var(--cyan);
    font-family:var(--font-display);font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
    clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
  }
  .nav-toggle__bars{display:block;width:16px;height:2px;background:var(--cyan);box-shadow:0 5px 0 var(--cyan),0 -5px 0 var(--cyan)}
  .nav-toggle[aria-expanded="true"]{color:var(--orange);border-color:var(--orange)}
  .nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:var(--orange);box-shadow:0 5px 0 var(--orange),0 -5px 0 var(--orange)}
  .groupbar__batch{display:none}
  .shell{padding:20px 16px 48px}
  .display-1,.page-head__title{font-size:28px}
  .display-2{font-size:24px}
  .numeric--xl{font-size:40px}
  .slash-band{transform:none;margin:28px 0}
  .slash-band__inner{transform:none}
  .site-foot__grid{grid-template-columns:1fr;padding:32px 16px 20px}
  .site-foot__base{padding:14px 16px 24px;flex-direction:column;align-items:flex-start}
  .index-list__row{grid-template-columns:48px 1fr;gap:12px}
}

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