:root{
  --red:#C1121F;
  --red-deep:#7A0A15;
  --gold:#C9A227;
  --gold-soft:#EBD08A;
  --cream:#F6EFE2;
  --paper:#FDFAF3;
  --ink:#17130F;
  --ink-2:#2B211A;
  --celadon:#4F8577;
  --neon:#3FE0D2;
  --amber:#F2A93B;
  --line:#8C8377;
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",STSong,"SimSun",serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular","Menlo","Consolas",monospace;
  --wrap:1240px;
  --sp:clamp(16px,2.4vw,30px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--cream);
  background-image:radial-gradient(rgba(43,33,26,.05) 1px,transparent 1px);
  background-size:4px 4px;
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  overflow-x:hidden;
}
h1,h2,h3{font-family:var(--font-display);font-weight:700;line-height:1.18;letter-spacing:-.02em;margin:0 0 .5em;text-wrap:balance}
h1{font-size:clamp(34px,5.4vw,72px)}
h2{font-size:clamp(24px,3.4vw,40px)}
h3{font-size:clamp(18px,2.2vw,24px)}
p{margin:0 0 1em}
a{color:var(--red-deep)}
ul,ol{padding-left:1.15em}
img,svg,video{max-width:100%;display:block}
button{font:inherit}
[hidden]{display:none!important}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px}
.num,time,.mono,.stat__value,.data-panel__row b,.sign-tab__no,.fo-footer__contact{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.wrap{width:min(calc(100% - var(--sp) * 2),var(--wrap));margin-inline:auto}
.section{width:min(calc(100% - var(--sp) * 2),var(--wrap));margin-inline:auto;padding-block:clamp(36px,6vw,84px)}
.breath{height:clamp(36px,8vw,120px)}
.gold-rule{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,var(--gold),transparent)}
.eyebrow{display:inline-block;font-family:var(--font-mono);font-size:12px;letter-spacing:.22em;color:var(--red);margin-bottom:14px}
.index-tag{display:inline-grid;place-items:center;min-width:34px;height:34px;padding:0 8px;border-radius:8px;background:var(--red);color:var(--gold-soft);font-family:var(--font-mono);font-size:13px}
.prose{max-width:68ch}
.prose h2{margin-top:1.6em}
.prose h3{margin-top:1.3em}
.prose ul,.prose ol{display:grid;gap:.4em}
.slab{
  background:var(--paper);
  border:1px solid rgba(201,162,39,.45);
  padding:clamp(18px,2.6vw,32px);
  clip-path:polygon(0 0,calc(100% - 20px) 0,100% 20px,100% 100%,20px 100%,0 calc(100% - 20px));
}
.slab--dark{background:var(--ink);color:#EFE7D8;border-color:rgba(201,162,39,.5)}
.slab--dark h2,.slab--dark h3{color:var(--gold-soft)}
.split{
  display:grid;
  grid-template-columns:minmax(170px,212px) minmax(0,1fr);
  gap:clamp(20px,3vw,44px);
  width:min(calc(100% - var(--sp) * 2),var(--wrap));
  margin-inline:auto;
}
.split__rail,.split__main{min-width:0}
.ledger-rail{position:sticky;top:118px;align-self:start;display:flex;flex-direction:column;gap:6px}
.sign-tab{
  position:relative;
  display:flex;align-items:center;gap:10px;
  padding:12px 14px;
  border-left:2px solid rgba(140,131,119,.35);
  border-radius:0 12px 12px 0;
  background:transparent;
  color:var(--ink-2);font-size:14px;letter-spacing:.04em;text-decoration:none;
  transition:background .2s ease,color .2s ease;
}
.sign-tab::before{content:"";position:absolute;left:0;top:0;bottom:0;width:0;background:linear-gradient(180deg,var(--gold),var(--red));transition:width .24s ease}
.sign-tab:hover{background:var(--paper)}
.sign-tab__no{font-size:11px;color:var(--line)}
.sign-tab.is-active,.sign-tab[aria-current="page"]{background:var(--paper);color:var(--red-deep)}
.sign-tab.is-active::before,.sign-tab[aria-current="page"]::before{width:3px}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border-radius:999px;
  border:1px solid transparent;
  font-size:14px;letter-spacing:.08em;text-decoration:none;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn--red{background:linear-gradient(160deg,var(--red),var(--red-deep));color:#fff}
.btn--red:hover{transform:translateY(-1px)}
.btn--ghost{border-color:rgba(23,19,15,.35);color:var(--ink)}
.btn--ghost:hover{border-color:var(--gold);color:var(--red-deep)}
.btn--gold{border-color:var(--gold);background:linear-gradient(160deg,var(--gold-soft),rgba(235,208,138,.35));color:var(--ink-2)}
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:11px;letter-spacing:.14em;background:rgba(140,131,119,.16);color:var(--ink-2)}
.tag--celadon{background:rgba(79,133,119,.16);color:#2F5C51}
.tag--amber{background:rgba(242,169,59,.2);color:#8A5A0B}
.tag--red{background:rgba(193,18,31,.12);color:var(--red-deep)}
.breadcrumb{width:min(calc(100% - var(--sp) * 2),var(--wrap));margin:clamp(16px,3vw,30px) auto 0;font-size:12px;letter-spacing:.12em;color:var(--line)}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}
.breadcrumb a{color:var(--ink-2);text-decoration:none;border-bottom:1px solid rgba(140,131,119,.5)}
.breadcrumb a:hover{color:var(--red-deep);border-color:var(--gold)}
.breadcrumb [aria-current="page"]{color:var(--red-deep)}
.data-panel{
  background-color:var(--ink);
  background-image:linear-gradient(rgba(201,162,39,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(201,162,39,.07) 1px,transparent 1px);
  background-size:28px 28px;
  color:#EFE7D8;
  border-radius:18px;
  padding:clamp(16px,2.4vw,30px);
}
.data-panel__head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:12px;padding-bottom:10px;border-bottom:1px solid rgba(201,162,39,.45)}
.data-panel__title{margin:0;font-family:var(--font-display);font-size:clamp(18px,2.2vw,22px);color:var(--gold-soft)}
.data-panel__row{display:grid;grid-template-columns:repeat(auto-fit,minmax(118px,1fr));gap:12px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.09)}
.data-panel__row b{color:var(--neon);font-weight:400}
.stat{display:flex;flex-direction:column;gap:2px}
.stat__value{font-size:clamp(22px,3vw,32px);line-height:1.1;color:var(--neon)}
.stat__label{font-size:11px;letter-spacing:.18em;color:rgba(239,231,216,.62)}
.stat--amber .stat__value{color:var(--amber)}
.fold{border-top:1px solid rgba(140,131,119,.35)}
.fold__summary{display:flex;justify-content:space-between;gap:12px;padding:14px 0;cursor:pointer;list-style:none;font-family:var(--font-display);font-size:18px;letter-spacing:.02em}
.fold__summary::-webkit-details-marker{display:none}
.fold__summary::after{content:"+";font-family:var(--font-mono);color:var(--red)}
.fold[open] .fold__summary::after{content:"−"}
.fold__body{padding:0 0 18px;color:var(--ink-2);max-width:68ch}
.img-frame{
  position:relative;display:block;width:100%;
  aspect-ratio:16/10;overflow:hidden;
  border:1px solid rgba(201,162,39,.45);
  border-radius:14px;
  background:linear-gradient(140deg,var(--paper),var(--cream));
}
.img-frame::after{content:"";position:absolute;inset:10px;border:1px dashed rgba(140,131,119,.45);border-radius:8px;pointer-events:none}
.img-frame img{width:100%;height:100%;object-fit:cover}
.img-frame--wide{aspect-ratio:21/9}
.img-frame--tall{aspect-ratio:3/4}
.img-frame--square{aspect-ratio:1/1}
.img-frame__caption{display:block;padding-top:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--line)}
.fo-toc{max-width:280px}
.fo-toc__list{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.fo-toc__link{display:block;padding:7px 10px;border-left:2px solid transparent;font-size:13px;color:var(--ink-2);text-decoration:none;transition:border-color .2s ease,color .2s ease,background .2s ease}
.fo-toc__link:hover{background:rgba(201,162,39,.12)}
.fo-toc__link.is-active{border-left-color:var(--red);background:rgba(193,18,31,.06);color:var(--red-deep)}
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .44s ease,transform .44s ease}
[data-reveal].is-visible{opacity:1;transform:none}
.fo-progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:130;pointer-events:none;background:linear-gradient(90deg,var(--gold),var(--amber),var(--red));transition:width .12s linear}
.fo-skip{
  position:absolute;left:14px;top:-70px;z-index:140;
  padding:10px 18px;border-radius:999px;
  background:var(--ink);color:var(--gold-soft);
  font-size:13px;letter-spacing:.14em;text-decoration:none;
  transition:top .2s ease;
}
.fo-skip:focus{top:14px}
.fo-header{
  position:sticky;top:0;z-index:90;
  padding:8px var(--sp) 12px;
  background:linear-gradient(180deg,rgba(246,239,226,.97),rgba(246,239,226,.9));
  backdrop-filter:blur(9px);
  -webkit-backdrop-filter:blur(9px);
}
.fo-topline{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  max-width:var(--wrap);margin-inline:auto;
  padding-top:6px;
  border-top:2px solid var(--gold);
  font-size:11px;letter-spacing:.18em;color:var(--ink-2);
  transition:opacity .2s ease;
}
.fo-topline__season strong{color:var(--red);font-weight:600}
.fo-island{
  position:relative;
  display:flex;align-items:center;gap:clamp(8px,1.6vw,24px);
  max-width:var(--wrap);margin:8px auto 0;
  padding:8px 12px 8px 10px;
  background:var(--paper);
  border:1px solid rgba(201,162,39,.55);
  border-radius:999px;
  box-shadow:0 12px 34px -20px rgba(23,19,15,.5);
  transition:padding .2s ease,box-shadow .2s ease;
}
.fo-header.is-tight .fo-island{padding:5px 10px;box-shadow:0 8px 22px -16px rgba(23,19,15,.55)}
.fo-header.is-tight .fo-topline{opacity:.7}
.fo-brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit}
.fo-brand__seal{
  width:38px;height:38px;flex:0 0 auto;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(160deg,var(--red),var(--red-deep));
  color:var(--gold-soft);
  font-family:var(--font-display);font-weight:800;font-size:20px;
  box-shadow:inset 0 0 0 1px rgba(235,208,138,.65);
  transition:width .2s ease,height .2s ease,font-size .2s ease;
}
.fo-header.is-tight .fo-brand__seal{width:32px;height:32px;font-size:17px}
.fo-brand__text{display:flex;flex-direction:column;line-height:1.15}
.fo-brand__cn{font-family:var(--font-display);font-weight:700;font-size:16px;letter-spacing:.06em;white-space:nowrap}
.fo-brand__sub{font-size:10px;letter-spacing:.2em;color:var(--line)}
.fo-nav{margin-left:auto}
.fo-nav__list{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.fo-nav__link{
  display:inline-block;padding:8px 12px;border-radius:999px;
  font-size:14px;color:var(--ink-2);text-decoration:none;white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.fo-nav__link:hover{background:rgba(193,18,31,.08);color:var(--red-deep)}
.fo-nav__link[aria-current="page"]{background:var(--ink);color:var(--gold-soft)}
.fo-util{display:flex;align-items:center;gap:8px}
.fo-season{display:flex;gap:2px;padding:3px;border:1px solid rgba(140,131,119,.4);border-radius:999px;background:var(--cream)}
.fo-season__btn{
  padding:5px 9px;border:0;border-radius:999px;
  background:transparent;color:var(--ink-2);
  font-family:var(--font-mono);font-size:12px;cursor:pointer;
  transition:background .2s ease,color .2s ease;
}
.fo-season__btn:hover{background:rgba(201,162,39,.22)}
.fo-season__btn[aria-pressed="true"]{background:var(--red);color:#fff}
.fo-search{
  display:inline-block;padding:7px 12px;border-radius:999px;
  border:1px solid rgba(140,131,119,.45);
  font-size:12px;letter-spacing:.14em;color:var(--ink-2);text-decoration:none;
  transition:border-color .2s ease,color .2s ease;
}
.fo-search:hover{border-color:var(--gold);color:var(--red-deep)}
.fo-cta{
  display:inline-block;padding:9px 18px;border-radius:999px;
  background:linear-gradient(160deg,var(--red),var(--red-deep));
  color:#fff;font-size:13px;letter-spacing:.1em;text-decoration:none;white-space:nowrap;
  box-shadow:0 8px 18px -10px rgba(122,10,21,.9);
  transition:transform .2s ease,filter .2s ease;
}
.fo-cta:hover{transform:translateY(-1px);filter:brightness(1.06)}
.fo-navtoggle{
  display:none;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;
  border:1px solid rgba(201,162,39,.6);
  background:var(--paper);color:var(--ink);
  font-size:12px;letter-spacing:.16em;cursor:pointer;
}
.fo-navtoggle__box{display:grid;gap:3px;width:18px}
.fo-navtoggle__box span{display:block;height:2px;border-radius:2px;background:var(--red);transition:transform .2s ease,opacity .2s ease}
.fo-header[data-open] .fo-navtoggle__box span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.fo-header[data-open] .fo-navtoggle__box span:nth-child(2){opacity:0}
.fo-header[data-open] .fo-navtoggle__box span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.fo-footer{
  position:relative;
  margin-top:clamp(44px,8vw,96px);
  padding:clamp(34px,5vw,64px) 0 20px;
  background-color:var(--ink-2);
  background-image:linear-gradient(rgba(201,162,39,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(201,162,39,.05) 1px,transparent 1px);
  background-size:32px 32px;
  color:#E8E0D2;
  border-top:3px solid var(--gold);
}
.fo-footer__grid{display:grid;grid-template-columns:1.55fr 1fr 1fr 1.2fr;gap:clamp(20px,3vw,40px)}
.fo-footer__col{border-top:1px solid rgba(201,162,39,.38);padding-top:16px}
.fo-footer__title{margin:0 0 12px;font-family:var(--font-display);font-size:14px;letter-spacing:.2em;color:var(--gold-soft)}
.fo-footer__list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.fo-footer__list a{color:#CFC5B4;font-size:13.5px;text-decoration:none}
.fo-footer__list a:hover{color:var(--gold-soft)}
.fo-footer__brandmark{display:flex;align-items:center;gap:10px;margin:0 0 12px;font-family:var(--font-display);font-size:18px;letter-spacing:.08em;color:var(--paper)}
.fo-footer__brandmark .fo-brand__seal{width:30px;height:30px;font-size:16px;border-radius:8px}
.fo-footer__note{margin:0 0 10px;font-size:12.5px;line-height:1.85;color:#A99E8D;max-width:44ch}
.fo-footer__contact{font-size:13px;color:#E8E0D2;word-break:break-all}
.fo-footer__bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;
  margin-top:34px;padding-top:16px;
  border-top:1px solid rgba(201,162,39,.3);
  font-size:12px;color:#9A9080;
}
.fo-footer__legal{margin:0}
.fo-footer__links{display:flex;flex-wrap:wrap;gap:16px;list-style:none;margin:0;padding:0}
.fo-footer__links a{color:#CFC5B4;text-decoration:none}
.fo-footer__links a:hover{color:var(--gold-soft)}
.fo-dock{
  position:fixed;right:clamp(12px,2vw,26px);bottom:clamp(12px,2vw,26px);
  z-index:95;display:flex;flex-direction:column;gap:10px;
}
.fo-dock__btn{
  width:54px;height:54px;padding:4px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid rgba(201,162,39,.6);
  background:var(--ink);color:var(--gold-soft);
  font-size:11px;line-height:1.25;letter-spacing:.06em;text-align:center;text-decoration:none;
  cursor:pointer;
  transition:transform .2s ease,opacity .2s ease,visibility .2s ease;
}
.fo-dock__btn:hover{transform:translateY(-2px)}
.fo-dock__btn--red{background:linear-gradient(160deg,var(--red),var(--red-deep));color:#fff;border-color:rgba(235,208,138,.5)}
.fo-dock__btn[data-totop]{opacity:0;visibility:hidden;transform:translateY(10px)}
.fo-dock__btn[data-totop].is-shown{opacity:1;visibility:visible;transform:none}
@media (max-width:1280px){
  .fo-season{display:none}
}
@media (max-width:1100px){
  .fo-search{display:none}
  .split{grid-template-columns:minmax(0,1fr)}
  .ledger-rail{position:static;flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:6px}
  .sign-tab{border-left:0;border-top:2px solid rgba(140,131,119,.35);border-radius:0 0 12px 12px;white-space:nowrap}
  .sign-tab::before{display:none}
  .sign-tab.is-active,.sign-tab[aria-current="page"]{border-top-color:var(--red)}
}
@media (max-width:980px){
  .fo-navtoggle{display:inline-flex}
  .fo-brand__sub{display:none}
  .fo-nav{
    position:absolute;left:var(--sp);right:var(--sp);top:calc(100% + 6px);
    margin:0;display:none;
    padding:14px;
    background:var(--paper);
    border:1px solid rgba(201,162,39,.55);
    border-radius:22px;
    box-shadow:0 30px 70px -34px rgba(23,19,15,.75);
  }
  .fo-header[data-open] .fo-nav{display:block}
  .fo-nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .fo-nav__link{padding:12px 14px;border-radius:14px;font-size:15px}
  .fo-footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  .fo-cta{display:none}
  .fo-island{gap:10px}
  .fo-footer__grid{grid-template-columns:1fr}
  .fo-footer__bottom{flex-direction:column;align-items:flex-start}
  .fo-dock__btn{width:48px;height:48px;font-size:10px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  [data-reveal]{opacity:1!important;transform:none!important}
}