/* ============ reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse}

/* ============ tokens ============ */
:root{
  --ink:#0E3B2E;
  --ink-deep:#07241C;
  --flare:#E8FF3A;
  --card-yellow:#F2C200;
  --card-red:#E23B2E;
  --paper:#F4F1E8;
  --ash:#C9CFC6;
  --black:#111512;
  --timer:#4FE3A1;
  --mist:#5C6F66;
  --soft:#43534B;
  --wrap:1240px;
  --gutter:clamp(16px,4vw,40px);
  --r-lg:28px;
  --r-md:18px;
  --r-pill:999px;
  --hair:rgba(17,21,18,.14);
  --hair-strong:rgba(17,21,18,.22);
  --hair-light:rgba(244,241,232,.16);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","Cascadia Mono","Roboto Mono",Menlo,Consolas,"Courier New",monospace;
}

/* ============ base type ============ */
body{
  background:var(--paper);
  color:var(--black);
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-weight:300;line-height:1.1;letter-spacing:-.02em;font-stretch:87.5%}
p{max-width:40ch}
:focus-visible{outline:3px solid var(--flare);outline-offset:2px;border-radius:4px}

/* ============ layout primitives ============ */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.section{padding:clamp(40px,6vw,84px) 0}
.section--paper{background:var(--paper);color:var(--black)}
.section--ink{background:var(--ink);color:var(--paper)}
.section--deep{background:var(--ink-deep);color:var(--paper)}
.section--flare{background:var(--flare);color:var(--black)}
.rule{height:1px;border:0;background:var(--hair);margin:0}
.section--ink .rule,.section--deep .rule{background:var(--hair-light)}

.display{font-size:clamp(40px,7.4vw,92px);font-weight:300;line-height:.98;letter-spacing:-.02em}
.display--sm{font-size:clamp(30px,4.6vw,56px);line-height:1.02}
.section-title{font-size:clamp(23px,2.9vw,40px);font-weight:300;letter-spacing:-.015em;line-height:1.12}
.lede{font-size:clamp(16px,1.4vw,19px);line-height:1.75;color:var(--soft);max-width:42ch}
.section--ink .lede,.section--deep .lede{color:rgba(244,241,232,.74)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;color:#5E6E66;
}
.section--ink .eyebrow,.section--deep .eyebrow{color:var(--flare)}
.filed-no{
  display:inline-block;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--flare);color:var(--black);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;font-weight:500;
}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:500;letter-spacing:.01em}

/* ============ buttons & pills ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 26px;border-radius:var(--r-pill);
  border:1px solid transparent;background:transparent;
  font-size:14px;font-weight:500;letter-spacing:.08em;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn--flare{background:var(--flare);border-color:var(--flare);color:var(--black)}
.btn--flare:hover{background:var(--paper);border-color:var(--paper);color:var(--black)}
.btn--ghost{border-color:currentColor;color:inherit}
.btn--ghost:hover{background:var(--flare);border-color:var(--flare);color:var(--black)}
.btn--sm{padding:9px 18px;font-size:13px}

.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--r-pill);
  border:1px solid var(--hair-strong);background:transparent;color:inherit;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.pill:hover,.pill[aria-pressed="true"]{background:var(--flare);border-color:var(--flare);color:var(--black)}
.site-header .pill,.section--ink .pill,.section--deep .pill{border-color:rgba(244,241,232,.28)}

/* ============ tags ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:6px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;font-weight:500;
  background:var(--ash);color:var(--black);
}
.tag--flare{background:var(--flare);color:var(--black)}
.tag--yellow{background:var(--card-yellow);color:var(--black)}
.tag--red{background:var(--card-red);color:#fff}
.tag--timer{background:var(--timer);color:var(--black)}
.tag--ash{background:transparent;border:1px solid var(--ash);color:var(--soft)}

/* ============ breadcrumb ============ */
.breadcrumb{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:#5E6E66}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb__link{color:#5E6E66;transition:color .18s ease}
.breadcrumb__link:hover{color:var(--black)}
.breadcrumb__sep{color:var(--ash)}
.section--ink .breadcrumb__link,.section--deep .breadcrumb__link{color:rgba(244,241,232,.62)}
.section--ink .breadcrumb__link:hover,.section--deep .breadcrumb__link:hover{color:var(--flare)}
.section--ink .breadcrumb__sep,.section--deep .breadcrumb__sep{color:rgba(244,241,232,.32)}

/* ============ grids ============ */
.grid{display:grid;gap:clamp(16px,2.4vw,32px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* ============ index directory ============ */
.index-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:0}
.index-item{
  position:relative;display:block;
  padding:22px 24px 26px;
  border-top:1px solid var(--hair-strong);
  transition:background-color .18s ease;
}
.index-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--flare);transform:scaleY(0);transform-origin:top;
  transition:transform .18s ease;
}
.index-item:hover{background:rgba(232,255,58,.34)}
.index-item:hover::before{transform:scaleY(1)}
.index-item__no{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:#5E6E66}
.index-item__title{margin-top:8px;font-size:19px;font-weight:500;letter-spacing:-.01em;line-height:1.3}
.index-item__desc{margin-top:6px;font-size:14px;line-height:1.7;color:var(--soft);max-width:34ch}

.section--ink .index-item,.section--deep .index-item{border-top-color:var(--hair-light)}
.section--ink .index-item:hover,.section--deep .index-item:hover{background:rgba(232,255,58,.12)}
.section--ink .index-item__no,.section--deep .index-item__no{color:var(--mist)}
.section--ink .index-item__desc,.section--deep .index-item__desc{color:rgba(244,241,232,.7)}

/* ============ split layout + rail ============ */
.layout-split{display:grid;grid-template-columns:260px minmax(0,1fr);gap:clamp(20px,3vw,48px);align-items:start}
.rail{width:100%}
.rail__list{border-top:1px solid var(--hair-strong)}
.rail__item{
  position:relative;display:block;
  padding:14px 12px 14px 16px;
  border-bottom:1px solid var(--hair);
  transition:background-color .18s ease;
}
.rail__item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--card-yellow);transform:scaleY(0);transform-origin:center;
  transition:transform .18s ease;
}
.rail__item:hover{background:rgba(232,255,58,.3)}
.rail__item:hover::before{transform:scaleY(1)}
.section--ink .rail__list,.section--deep .rail__list{border-top-color:var(--hair-light)}
.section--ink .rail__item,.section--deep .rail__item{border-bottom-color:var(--hair-light)}
.section--ink .rail__item:hover,.section--deep .rail__item:hover{background:rgba(232,255,58,.14)}
.section--ink .rail__item::before,.section--deep .rail__item::before{background:var(--flare)}

/* ============ timeline ============ */
.timeline{position:relative;overflow-x:auto;padding:6px 0 20px;-webkit-overflow-scrolling:touch}
.timeline__track{position:relative;display:flex;min-width:max-content;padding-top:34px}
.timeline__track::before{content:"";position:absolute;left:0;right:0;top:16px;height:1px;background:var(--hair-strong)}
.timeline__node{position:relative;min-width:180px;padding-right:28px}
.timeline__node::before{
  content:"";position:absolute;top:-22px;left:0;width:9px;height:9px;border-radius:50%;
  background:var(--ash);transition:background-color .18s ease,box-shadow .18s ease;
}
.timeline__node:hover::before{background:var(--flare);box-shadow:0 0 0 4px rgba(232,255,58,.3)}
.timeline__time{font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;color:var(--card-yellow)}
.timeline__label{margin-top:4px;font-size:14px;line-height:1.6}
.section--ink .timeline__track::before,.section--deep .timeline__track::before{background:var(--hair-light)}

/* ============ data table ============ */
.data-table{width:100%;font-size:14px}
.data-table th{
  padding:12px 14px;text-align:left;white-space:nowrap;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;font-weight:500;color:#5E6E66;
  border-bottom:1px solid var(--hair-strong);
}
.data-table td{padding:14px;border-bottom:1px solid var(--hair);vertical-align:top}
.data-table tbody tr{transition:background-color .18s ease}
.data-table tbody tr:hover{background:rgba(232,255,58,.24)}
.data-table [data-sort]{cursor:pointer;-webkit-user-select:none;user-select:none}
.data-table [data-sort]::after{content:"↕";margin-left:6px;color:var(--ash)}
.data-table [data-sort][aria-sort="ascending"]::after{content:"↑";color:var(--ink)}
.data-table [data-sort][aria-sort="descending"]::after{content:"↓";color:var(--ink)}
.section--ink .data-table th,.section--deep .data-table th{color:var(--mist);border-bottom-color:var(--hair-light)}
.section--ink .data-table td,.section--deep .data-table td{border-bottom-color:var(--hair-light)}

/* ============ media frames ============ */
.media-frame{
  position:relative;display:block;overflow:hidden;
  border-radius:var(--r-lg);background:var(--ink-deep);
  aspect-ratio:16/9;
}
.media-frame img{width:100%;height:100%;object-fit:cover;filter:saturate(.72) contrast(1.05)}
.media-frame--4x3{aspect-ratio:4/3}
.media-frame--1x1{aspect-ratio:1/1}
.media-frame--21x9{aspect-ratio:21/9}
.media-frame__cap{
  position:absolute;left:0;right:0;bottom:0;
  padding:12px 18px;
  background:linear-gradient(to top,rgba(7,36,28,.86),rgba(7,36,28,0));
  color:var(--paper);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
}

/* ============ skip link ============ */
.skip-link{
  position:absolute;left:16px;top:-72px;z-index:200;
  padding:10px 18px;border-radius:0 0 12px 12px;
  background:var(--flare);color:var(--black);
  font-size:14px;letter-spacing:.06em;
  transition:top .18s ease;
}
.skip-link:focus{top:0}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--ink-deep);
  color:var(--paper);
  border-bottom:1px solid rgba(232,255,58,.16);
}
.header-inner{
  width:100%;max-width:var(--wrap);
  margin:0 auto;padding:16px var(--gutter) 0;
  transition:padding-top .2s ease;
}
.site-header.is-condensed .header-inner{padding-top:8px}
.masthead{display:flex;align-items:flex-end;justify-content:space-between;gap:clamp(14px,3vw,40px)}
.brand-block{display:flex;flex-direction:column;gap:6px;min-width:0}
.brand{
  font-size:clamp(19px,2.3vw,28px);font-weight:500;line-height:1;
  letter-spacing:.02em;color:var(--paper);
  transition:color .18s ease;white-space:nowrap;
}
.brand:hover{color:var(--flare)}
.brand-index{
  max-height:24px;overflow:hidden;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--mist);
  transition:opacity .2s ease,max-height .2s ease;
}
.site-header.is-condensed .brand-index{opacity:0;max-height:0}
.utility{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:10px}
.season-switch{
  display:inline-flex;align-items:center;gap:4px;
  padding:3px;border-radius:var(--r-pill);
  border:1px solid rgba(244,241,232,.18);
}
.season-switch__label{
  padding:0 8px 0 10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--mist);
}
.season-switch .pill{border-color:transparent;padding:6px 12px;font-size:11px}
.season-switch .pill:hover,.season-switch .pill[aria-pressed="true"]{border-color:var(--flare)}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(244,241,232,.24);
  color:var(--paper);font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--flare);color:var(--flare)}
.nav-toggle__bars{position:relative;display:block;width:16px;height:2px;background:currentColor;transition:background-color .18s ease}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;
  transition:transform .2s ease,top .2s ease;
}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{top:0;transform:rotate(-45deg)}

.nav-band{margin-top:14px;border-top:1px solid rgba(244,241,232,.14)}
.nav-band__list{display:flex;flex-wrap:wrap;justify-content:center;gap:clamp(10px,3vw,38px)}
.nav-band__link{
  position:relative;display:block;padding:14px 4px;
  font-size:14px;letter-spacing:.06em;color:rgba(244,241,232,.78);
  transition:color .18s ease;
}
.nav-band__link::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;
  background:var(--flare);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.nav-band__link:hover{color:var(--paper)}
.nav-band__link:hover::after{transform:scaleX(1)}
.nav-band__link[aria-current="page"]{color:var(--flare)}
.nav-band__link[aria-current="page"]::after{transform:scaleX(1)}

.header-progress{width:0;height:2px;background:var(--flare)}

/* ============ footer ============ */
.site-footer{
  background:var(--ink-deep);color:var(--paper);
  padding:clamp(40px,6vw,72px) 0 28px;
  border-top:1px solid rgba(232,255,58,.2);
}
.footer-inner{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.footer-top{
  display:grid;grid-template-columns:minmax(220px,1fr) minmax(0,2.1fr);
  gap:clamp(28px,5vw,72px);
}
.footer-brand__name{
  display:inline-block;font-size:clamp(21px,2.3vw,30px);font-weight:300;
  letter-spacing:-.01em;color:var(--paper);transition:color .18s ease;
}
.footer-brand__name:hover{color:var(--flare)}
.footer-brand__note{margin-top:12px;font-size:14px;line-height:1.75;color:var(--mist);max-width:28ch}
.footer-brand__meta{
  margin-top:12px;font-family:var(--font-mono);font-size:12px;
  letter-spacing:.14em;color:var(--flare);
}
.footer-groups{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,44px)}
.footer-group__title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:12px;font-weight:500;
  letter-spacing:.16em;text-transform:uppercase;color:var(--mist);
}
.footer-group__link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:14px;color:rgba(244,241,232,.8);transition:color .18s ease;
}
.footer-group__link::after{
  content:"";position:absolute;left:0;bottom:4px;width:100%;height:1px;
  background:var(--flare);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.footer-group__link:hover{color:var(--flare)}
.footer-group__link:hover::after{transform:scaleX(1)}
.footer-contact{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
  gap:14px 28px;margin-top:clamp(28px,4vw,48px);padding-top:24px;
  border-top:1px solid var(--hair-light);font-size:14px;
}
.footer-contact__item{display:flex;align-items:baseline;gap:10px;margin:0;color:rgba(244,241,232,.82);max-width:none}
.footer-contact__key{
  flex:0 0 auto;font-family:var(--font-mono);font-size:12px;
  letter-spacing:.14em;color:var(--flare);
}
.footer-contact__val{word-break:break-word}
.footer-legal{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;
  margin-top:28px;padding-top:18px;border-top:1px solid var(--hair-light);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--mist);
}
.footer-legal__text{margin:0;max-width:none}

/* ============ reveal ============ */
[data-reveal]{opacity:1}
.js [data-reveal]{opacity:.6;transition:opacity .4s ease}
.js [data-reveal].is-visible{opacity:1}

/* ============ responsive ============ */
@media (max-width:1100px){
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:980px){
  .footer-top{grid-template-columns:1fr;gap:32px}
}
@media (max-width:900px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .layout-split{grid-template-columns:1fr}
}
@media (max-width:880px){
  .nav-toggle{display:inline-flex}
  .season-switch{display:none}
  .masthead{align-items:center}
  .nav-band{margin-top:12px;border-top:0;max-height:0;overflow:hidden;transition:max-height .28s ease}
  .nav-band[data-open]{max-height:480px}
  .nav-band__list{flex-direction:column;justify-content:flex-start;gap:0;padding:6px 0 18px}
  .nav-band__link{padding:15px 2px;border-bottom:1px solid rgba(244,241,232,.12);font-size:15px}
  .nav-band__link::after{display:none}
  .nav-band__link:hover{color:var(--flare)}
  .footer-groups{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .pill--ghost{display:none}
  .brand-index{display:none}
}
@media (max-width:520px){
  .footer-groups{grid-template-columns:1fr}
  .header-inner{padding-top:12px}
}

/* ============ motion prefs ============ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  html{scroll-behavior:auto}
  .js [data-reveal]{opacity:1}
}