:root{
  --ink:#1E1A17;
  --ink-soft:#4A4038;
  --paper:#F5EBDD;
  --paper-2:#E7D3BB;
  --paper-3:#FBF5EB;
  --vermilion:#C7352B;
  --vermilion-deep:#8F1F1A;
  --gold:#D9A441;
  --gold-light:#F0D38A;
  --green:#1F6B57;
  --indigo:#2A3B6E;
  --felt:#3A2B24;
  --felt-deep:#241A15;
  --line:rgba(30,26,23,.16);
  --line-soft:rgba(30,26,23,.08);
  --r-sm:6px;
  --r-md:14px;
  --r-lg:26px;
  --container:1180px;
  --gutter:clamp(16px,4vw,40px);
  --header-h:74px;
  --font-head:"Songti SC","STSong","Noto Serif CJK SC","Source Han Serif SC",serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.2,.8,.3,1);
  --shadow-1:0 1px 0 rgba(30,26,23,.06),0 16px 32px -24px rgba(58,43,36,.6);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:clamp(15px,1.05vw,17px);
  line-height:1.75;
  color:var(--ink);
  background-color:var(--paper);
  background-image:
    linear-gradient(90deg,rgba(30,26,23,.045) 1px,transparent 1px),
    linear-gradient(180deg,rgba(30,26,23,.035) 1px,transparent 1px);
  background-size:96px 96px,96px 96px;
  background-position:0 0,0 0;
  text-rendering:optimizeLegibility;
}
body.nav-open{overflow:hidden;}
h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:900;
  line-height:1.14;
  letter-spacing:-.015em;
  margin:0 0 .5em;
  color:var(--ink);
}
h1{font-size:clamp(40px,6vw,64px);}
h2{font-size:clamp(26px,3.4vw,40px);}
h3{font-size:clamp(20px,2.2vw,26px);letter-spacing:0;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--indigo);text-decoration:none;text-underline-offset:3px;}
a:hover{text-decoration:underline;}
img{max-width:100%;height:auto;display:block;}
button{font:inherit;color:inherit;}
strong{font-weight:700;}
code,kbd,samp{font-family:var(--font-num);font-size:.9em;}
[hidden]{display:none !important;}
:focus-visible{outline:3px solid var(--indigo);outline-offset:3px;border-radius:3px;}
.site-footer :focus-visible{outline-color:var(--gold-light);}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;
  top:10px;left:10px;
  z-index:300;
  padding:10px 18px;
  background:var(--ink);
  color:var(--paper);
  border-radius:var(--r-sm);
  font-size:14px;
  letter-spacing:.06em;
  transform:translateY(-240%);
  transition:transform .22s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0);text-decoration:none;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:linear-gradient(180deg,rgba(245,235,221,.98),rgba(245,235,221,.93));
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  color:var(--ink);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 26px -22px rgba(30,26,23,.9);}
.site-header__rule{
  height:5px;
  background:
    repeating-linear-gradient(90deg,var(--vermilion) 0 16px,var(--vermilion-deep) 16px 19px,transparent 19px 34px),
    linear-gradient(180deg,rgba(217,164,65,.55),rgba(217,164,65,0));
}
.site-header__progress{
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  background:linear-gradient(90deg,var(--vermilion),var(--gold));
  transform:scaleX(0);
  transform-origin:0 50%;
  pointer-events:none;
  transition:transform .12s linear;
}
.site-header__inner{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--gutter);
  min-height:var(--header-h);
  display:flex;
  align-items:center;
  gap:clamp(8px,1.6vw,20px);
}

/* brand */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  color:var(--ink);
  text-decoration:none;
  padding:8px 0;
}
.brand:hover{text-decoration:none;}
.brand__seal{
  position:relative;
  width:46px;height:46px;flex:0 0 46px;
  display:grid;place-items:center;
  background:var(--vermilion);
  color:var(--paper);
  border-radius:8px 8px 12px 8px;
  box-shadow:inset 0 0 0 2px rgba(245,235,221,.9),inset 0 0 0 4px var(--vermilion),0 8px 16px -10px rgba(143,31,26,.95);
  transform:rotate(-2.5deg);
  transition:transform .3s var(--ease);
}
.brand:hover .brand__seal,.brand:focus-visible .brand__seal{transform:rotate(0) scale(1.05);}
.brand__seal-char{
  font-family:var(--font-head);
  font-weight:900;
  font-size:25px;
  line-height:1;
}
.brand__text{display:flex;flex-direction:column;gap:2px;}
.brand__name{
  font-family:var(--font-head);
  font-weight:900;
  font-size:19px;
  letter-spacing:.06em;
  line-height:1.2;
}
.brand__meta{
  font-size:11px;
  letter-spacing:.2em;
  color:var(--ink-soft);
  line-height:1.2;
}

/* header actions */
.site-header__actions{
  display:flex;
  align-items:center;
  gap:10px;
  order:3;
}

/* buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.55em;
  padding:10px 18px;
  border:1px solid transparent;
  border-radius:var(--r-sm);
  font-family:var(--font-body);
  font-size:14px;
  font-weight:600;
  letter-spacing:.08em;
  line-height:1.3;
  cursor:pointer;
  text-decoration:none;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn:hover{text-decoration:none;}
.btn--cta{
  background:var(--vermilion);
  color:var(--paper);
  border-color:var(--vermilion-deep);
  box-shadow:inset 0 -2px 0 rgba(143,31,26,.7);
}
.btn--cta:hover,.btn--cta:focus-visible{background:var(--vermilion-deep);color:var(--paper-3);transform:translateY(-1px);}
.btn--ghost{
  background:transparent;
  color:var(--ink);
  border-color:var(--line);
}
.btn--ghost:hover,.btn--ghost:focus-visible{border-color:var(--gold);color:var(--vermilion-deep);}

/* nav toggle */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 14px;
  background:var(--paper-3);
  color:var(--ink);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  font-size:13px;
  letter-spacing:.14em;
  cursor:pointer;
}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:18px;height:2px;
  background:currentColor;
  transition:background-color .2s var(--ease);
}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";
  position:absolute;left:0;
  width:18px;height:2px;
  background:currentColor;
  transition:transform .22s var(--ease);
}
.nav-toggle__bars::before{top:-6px;}
.nav-toggle__bars::after{top:6px;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-6px) rotate(-45deg);}
.nav-toggle__label{line-height:1;}

/* nav (desktop) */
.site-nav{order:2;margin-left:auto;}
.site-nav__eyebrow{display:none;}
.site-nav__foot{display:none;}
.site-nav__list{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:clamp(0px,.4vw,6px);
}
.site-nav__link{
  position:relative;
  display:inline-block;
  padding:9px 11px;
  color:var(--ink);
  font-size:14.5px;
  letter-spacing:.07em;
  border-radius:4px;
  transition:color .2s var(--ease);
}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:11px;right:11px;bottom:4px;
  height:2px;
  background:var(--gold);
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .24s var(--ease);
}
.site-nav__link:hover,.site-nav__link:focus-visible{color:var(--vermilion-deep);text-decoration:none;}
.site-nav__link:hover::after,.site-nav__link:focus-visible::after{transform:scaleX(1);}
.site-nav__link[aria-current="page"]{color:var(--vermilion-deep);font-weight:700;}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1);background:var(--vermilion);}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  background:linear-gradient(180deg,var(--felt),var(--felt-deep));
  color:var(--paper);
  border-top:4px solid var(--vermilion-deep);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    repeating-linear-gradient(45deg,rgba(245,235,221,.035) 0 2px,transparent 2px 7px),
    repeating-linear-gradient(-45deg,rgba(245,235,221,.025) 0 2px,transparent 2px 9px);
  pointer-events:none;
}
.site-footer__inner{
  position:relative;
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:clamp(36px,5vw,60px) var(--gutter) clamp(24px,3vw,36px);
  display:grid;
  grid-template-columns:1.15fr 1.35fr 1fr;
  gap:clamp(24px,3.4vw,48px);
}
.site-footer__brand{display:flex;flex-direction:column;align-items:flex-start;gap:8px;}
.site-footer__seal{
  display:grid;
  place-items:center;
  width:52px;height:52px;
  margin-bottom:6px;
  background:var(--vermilion);
  color:var(--paper-3);
  font-family:var(--font-head);
  font-weight:900;
  font-size:27px;
  line-height:1;
  border-radius:9px 9px 14px 9px;
  box-shadow:inset 0 0 0 2px rgba(245,235,221,.9),inset 0 0 0 4px var(--vermilion);
  transform:rotate(-3deg);
}
.site-footer__title{
  font-family:var(--font-head);
  font-weight:900;
  font-size:22px;
  letter-spacing:.08em;
  color:var(--gold-light);
  margin:0;
}
.site-footer__meta{
  margin:0;
  font-size:12.5px;
  letter-spacing:.1em;
  color:rgba(245,235,221,.72);
  line-height:1.9;
}
.site-footer__nav{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(16px,2vw,28px);
}
.site-footer__col{min-width:0;}
.site-footer__heading{
  margin:0 0 12px;
  font-size:12px;
  letter-spacing:.24em;
  color:var(--gold);
  text-transform:none;
}
.site-footer__list{display:flex;flex-direction:column;gap:8px;}
.site-footer__link{
  color:rgba(245,235,221,.86);
  font-size:14px;
  letter-spacing:.05em;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
  word-break:break-word;
}
.site-footer__link:hover,.site-footer__link:focus-visible{color:var(--gold-light);border-bottom-color:var(--gold);text-decoration:none;}
.site-footer__link--key{
  font-family:var(--font-num);
  font-size:13.5px;
  letter-spacing:.02em;
  color:var(--paper-3);
}
.site-footer__contact{display:flex;flex-direction:column;gap:8px;}
.site-footer__address{
  margin:6px 0 0;
  font-size:13px;
  line-height:1.8;
  letter-spacing:.06em;
  color:rgba(245,235,221,.72);
}
.site-footer__note{
  margin:0;
  font-size:12px;
  letter-spacing:.12em;
  color:rgba(240,211,138,.75);
}
.site-footer__base{
  position:relative;
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:16px var(--gutter) 24px;
  border-top:1px solid rgba(245,235,221,.16);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
}
.site-footer__legal,.site-footer__locale{
  margin:0;
  font-size:12px;
  letter-spacing:.14em;
  color:rgba(245,235,221,.66);
}
.site-footer__locale{
  padding:3px 10px;
  border:1px solid rgba(217,164,65,.45);
  border-radius:999px;
  color:var(--gold-light);
}

/* ---------- shared layout ---------- */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--gutter);
}
.section{padding:clamp(44px,6.5vw,88px) 0;}
.section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:14px;
  margin-bottom:clamp(20px,2.6vw,34px);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin:0 0 10px;
  font-size:12px;
  letter-spacing:.26em;
  color:var(--vermilion-deep);
}
.eyebrow::before{
  content:"";
  width:26px;height:2px;
  background:var(--gold);
}
.index-num{
  font-family:var(--font-num);
  font-size:13px;
  letter-spacing:.18em;
  color:var(--gold);
}
.divider{
  height:1px;
  margin:clamp(20px,3vw,34px) 0;
  background:linear-gradient(90deg,var(--gold),rgba(217,164,65,0));
  border:0;
}
.grid{
  display:grid;
  gap:clamp(16px,2.4vw,28px);
  grid-template-columns:repeat(12,minmax(0,1fr));
}
.col-4{grid-column:span 4;}
.col-5{grid-column:span 5;}
.col-6{grid-column:span 6;}
.col-7{grid-column:span 7;}
.col-8{grid-column:span 8;}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:.12em;
  color:var(--ink-soft);
  padding:clamp(14px,2vw,22px) 0 0;
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb__item + .breadcrumb__item::before{
  content:"/";
  color:var(--gold);
  font-family:var(--font-num);
}
.breadcrumb__link{color:var(--indigo);}
.breadcrumb__link:hover{color:var(--vermilion-deep);}
.breadcrumb [aria-current="page"]{color:var(--ink);font-weight:700;}

/* ---------- chips / filter ---------- */
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:999px;
  color:var(--ink-soft);
  font-size:13px;
  letter-spacing:.1em;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .16s var(--ease);
}
.chip:hover{border-color:var(--gold);color:var(--vermilion-deep);}
.chip:active{transform:scale(.97);}
.chip[aria-pressed="true"]{
  background:var(--vermilion);
  border-color:var(--vermilion-deep);
  color:var(--paper-3);
}

/* ---------- surfaces ---------- */
.card{
  padding:clamp(18px,2.2vw,26px);
  background:var(--paper-3);
  border-left:3px solid var(--vermilion);
  border-radius:0 var(--r-md) var(--r-md) 0;
  box-shadow:var(--shadow-1);
}
.slab{
  padding:clamp(22px,3vw,40px);
  background:var(--paper-2);
  border-radius:var(--r-lg) var(--r-md) var(--r-lg) var(--r-md);
}
.tag{
  display:inline-block;
  padding:2px 9px;
  border:1px solid rgba(42,59,110,.42);
  border-radius:999px;
  font-size:11.5px;
  letter-spacing:.14em;
  color:var(--indigo);
  background:rgba(42,59,110,.05);
}

/* ---------- media ---------- */
.media{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-md);
  background:linear-gradient(135deg,var(--paper-2),var(--paper));
  border:1px solid var(--line-soft);
}
.media__img{width:100%;height:100%;object-fit:cover;display:block;}
.media__label{
  position:absolute;
  left:12px;bottom:12px;
  padding:4px 10px;
  background:rgba(30,26,23,.78);
  color:var(--paper);
  font-size:11.5px;
  letter-spacing:.16em;
  border-radius:3px;
}
.media--wide{aspect-ratio:16/9;}
.media--square{aspect-ratio:1/1;}
.media--tall{aspect-ratio:3/4;}

/* ---------- toc ---------- */
.toc{
  position:sticky;
  top:calc(var(--header-h) + 18px);
  display:flex;
  flex-direction:column;
  gap:4px;
  padding:16px 0;
  border-left:2px solid var(--line-soft);
}
.toc__link{
  padding:6px 0 6px 14px;
  margin-left:-2px;
  border-left:2px solid transparent;
  font-size:13.5px;
  letter-spacing:.06em;
  color:var(--ink-soft);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.toc__link:hover{color:var(--vermilion-deep);text-decoration:none;}
.toc__link[aria-current="true"]{color:var(--vermilion-deep);border-left-color:var(--vermilion);font-weight:700;}

/* ---------- reveal ---------- */
.js-ready [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.js-ready [data-reveal].is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .site-footer__inner{grid-template-columns:1fr 1fr;}
  .site-footer__contact{grid-column:1 / -1;}
}
@media (max-width:900px){
  .col-4,.col-5,.col-6,.col-7,.col-8{grid-column:span 12;}
  .nav-toggle{display:inline-flex;}
  .site-nav{
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:70;
    order:0;
    margin:0;
    display:block;
    max-height:84vh;
    overflow-y:auto;
    padding:22px var(--gutter) calc(24px + env(safe-area-inset-bottom));
    background:linear-gradient(180deg,var(--felt),var(--felt-deep));
    color:var(--paper);
    border-top:3px solid var(--gold);
    border-radius:22px 22px 0 0;
    box-shadow:0 -24px 48px -24px rgba(30,26,23,.85);
    transform:translateY(104%);
    transition:transform .34s var(--ease);
  }
  .site-nav[data-open]{transform:translateY(0);}
  .site-nav__eyebrow{
    display:block;
    margin:0 0 14px;
    font-size:11.5px;
    letter-spacing:.3em;
    color:var(--gold);
  }
  .site-nav__list{display:block;}
  .site-nav__item + .site-nav__item{border-top:1px solid rgba(245,235,221,.12);}
  .site-nav__link{
    display:block;
    padding:15px 2px;
    color:var(--paper);
    font-family:var(--font-head);
    font-size:18px;
    font-weight:700;
    letter-spacing:.1em;
  }
  .site-nav__link::after{display:none;}
  .site-nav__link:hover,.site-nav__link:focus-visible{color:var(--gold-light);}
  .site-nav__link[aria-current="page"]{color:var(--gold-light);}
  .site-nav__foot{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:12px;
    margin-top:22px;
    padding-top:18px;
    border-top:1px solid rgba(245,235,221,.16);
  }
  .site-nav__back{
    font-size:13px;
    letter-spacing:.14em;
    color:rgba(245,235,221,.8);
    border-bottom:1px solid rgba(217,164,65,.6);
  }
  .site-nav__back:hover{color:var(--gold-light);text-decoration:none;}
  .site-header__actions{margin-left:auto;}
  .site-nav{margin-left:0;}
  .grid{grid-template-columns:repeat(6,minmax(0,1fr));}
}
@media (max-width:640px){
  :root{--header-h:66px;}
  .brand__meta{display:none;}
  .brand__seal{width:40px;height:40px;flex-basis:40px;}
  .brand__seal-char{font-size:22px;}
  .brand__name{font-size:17px;}
  .site-header__actions .btn--cta{display:none;}
  .site-footer__inner{grid-template-columns:1fr;}
  .site-footer__nav{grid-template-columns:1fr 1fr;}
  .site-footer__base{flex-direction:column;align-items:flex-start;}
  .grid{grid-template-columns:1fr;}
  .col-4,.col-5,.col-6,.col-7,.col-8{grid-column:span 1;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js-ready [data-reveal]{opacity:1;transform:none;}
  .site-header__progress{transition:none;}
}