:root{
  --ink:#000;
  --blue:#3bb1ff;
  --red:#ff5252;
  --paper:#f7f2e5;
  --card:#fffdf6;
  --brass:#b98844;
  --wrap:1180px;
  --r:10px;
  --bd:3px solid #000;
  --sh:5px 5px 0 #000;
  --sh-s:3px 3px 0 #000;
}

*{box-sizing:border-box}

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  overflow-x:hidden;
  background:var(--paper);
  color:var(--ink);
  font-family:"Crimson Pro","Cormorant Garamond",Georgia,"Songti SC","Noto Serif CJK SC",serif;
  font-size:18px;
  line-height:1.7;
}

h1,h2,h3,.btxt,.flogo,.bignum,.glyph{
  font-family:"Cinzel","Cormorant Garamond",Georgia,"Songti SC","Noto Serif CJK SC",serif;
  font-weight:700;
}

a{color:var(--ink)}

/* ---------- 顶部两行 ---------- */
.mast{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--paper);
  border-bottom:var(--bd);
}

.brandrow{
  display:flex;
  align-items:center;
  padding:9px 16px 7px;
  border-bottom:2px solid var(--ink);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:5px 2px;
  min-height:42px;
  text-decoration:none;
}

.brand .mark{
  height:30px;
  width:auto;
  display:block;
  border:var(--bd);
  border-radius:6px;
  background:var(--blue);
}

.brand .mark-txt{
  width:32px;
  height:32px;
  display:grid;
  place-items:center;
  font-size:17px;
  line-height:1;
  box-shadow:var(--sh-s);
}

.btxt{
  font-size:23px;
  letter-spacing:.04em;
  line-height:1.2;
}

.navrow{
  display:flex;
  align-items:center;
  gap:10px;
  padding:8px 16px 10px;
}

.pills{flex:1 1 auto;min-width:0}

.pills ol{
  display:flex;
  gap:8px;
  margin:0;
  padding:0 2px 4px;
  list-style:none;
  overflow-x:auto;
}

.pills a{
  display:inline-block;
  padding:9px 14px;
  min-height:42px;
  border:var(--bd);
  border-radius:999px;
  background:var(--card);
  font-size:16px;
  font-weight:600;
  line-height:1.5;
  white-space:nowrap;
  text-decoration:none;
  transition:transform .12s ease,box-shadow .12s ease,background-color .12s ease;
}

.pills a:hover,
.pills a:focus-visible{
  background:var(--blue);
  box-shadow:var(--sh-s);
  transform:translate(-2px,-2px);
}

.cta{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:9px 16px;
  border:var(--bd);
  border-radius:999px;
  background:var(--red);
  box-shadow:4px 4px 0 var(--ink);
  font-size:16px;
  font-weight:700;
  line-height:1.5;
  text-decoration:none;
  transition:transform .12s ease,box-shadow .12s ease;
}

.cta:hover,
.cta:focus-visible{
  transform:translate(-2px,-2px);
  box-shadow:6px 6px 0 var(--ink);
}

.cta:active{
  transform:translate(3px,3px);
  box-shadow:1px 1px 0 var(--ink);
}

/* ---------- hero ---------- */
.hero{
  max-width:var(--wrap);
  margin:24px auto 0;
  padding:0 16px;
  display:grid;
  grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);
  gap:24px;
  align-items:center;
  min-height:45vh;
}

.hero-art{
  position:relative;
  aspect-ratio:4/3;
  border:var(--bd);
  border-radius:var(--r);
  background:var(--blue);
  box-shadow:8px 8px 0 var(--ink);
  overflow:hidden;
}

.hero-art img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}

.glyph{
  position:absolute;
  inset:0;
  display:grid;
  place-items:center;
  font-size:clamp(64px,13vw,128px);
  line-height:1;
  color:var(--ink);
}

.hero-txt{
  position:relative;
  text-align:right;
}

.bignum{
  position:absolute;
  top:-34px;
  right:-4px;
  z-index:0;
  font-size:clamp(62px,11vw,116px);
  line-height:1;
  color:transparent;
  -webkit-text-stroke:2px var(--blue);
  pointer-events:none;
}

.hero h1{
  position:relative;
  z-index:1;
  margin:0 0 14px;
  font-size:clamp(30px,4.4vw,54px);
  line-height:1.14;
  letter-spacing:.01em;
}

.hero h1::after{
  content:"";
  display:block;
  width:86px;
  height:9px;
  margin:15px 0 0 auto;
  background:var(--red);
  border:var(--bd);
}

.lead{
  margin:0 0 0 auto;
  max-width:46ch;
  font-size:17px;
  line-height:1.65;
}

/* ---------- 正文区 ---------- */
.wrap{
  max-width:var(--wrap);
  margin:38px auto 0;
  padding:0 16px;
  display:grid;
  grid-template-columns:222px minmax(0,1fr);
  gap:26px;
  align-items:start;
}

.side{
  position:sticky;
  top:150px;
  border:var(--bd);
  border-radius:var(--r);
  background:var(--card);
  padding:14px;
}

.side-h{
  margin:0 0 10px;
  font-size:17px;
  letter-spacing:.14em;
  line-height:1.5;
}

.side-h span{
  display:inline-block;
  padding-bottom:2px;
  border-bottom:4px solid var(--red);
}

.side-list{
  margin:0;
  padding:0;
  list-style:none;
  counter-reset:sec;
  display:grid;
  gap:7px;
}

.side-list li{counter-increment:sec}

.side-list a{
  display:block;
  padding:8px 10px;
  min-height:40px;
  border:2px solid var(--ink);
  border-radius:8px;
  background:#fff;
  font-size:16px;
  font-weight:600;
  line-height:1.5;
  text-decoration:none;
  transition:background-color .12s ease,box-shadow .12s ease;
}

.side-list a::before{
  content:counter(sec,decimal-leading-zero);
  margin-right:6px;
  color:var(--brass);
  font-family:"Cinzel",Georgia,serif;
  font-size:14px;
}

.side-list a:hover,
.side-list a:focus-visible{
  background:var(--blue);
  box-shadow:var(--sh-s);
}

.board{min-width:0}

.doc div{
  margin:0 0 26px;
  padding:20px clamp(14px,2.4vw,30px) 26px;
  border:var(--bd);
  border-top-width:8px;
  border-top-color:var(--blue);
  border-radius:var(--r);
  background:var(--card);
}

.doc div:nth-child(3n+2){border-top-color:var(--red)}
.doc div:nth-child(3n){border-top-color:var(--brass)}

.doc div:target{box-shadow:inset 7px 0 0 var(--red)}

main div[id]{scroll-margin-top:160px}

.doc h2{
  margin:0 0 14px;
  font-size:clamp(22px,2.5vw,31px);
  line-height:1.28;
}

.doc h2 > span{
  display:inline;
  border-bottom:5px solid var(--blue);
}

.doc h3{
  margin:1.4em 0 .5em;
  font-size:clamp(19px,2vw,23px);
  line-height:1.35;
}

.doc h3 > span{
  display:inline;
  border-bottom:4px solid var(--red);
}

.doc p{margin:0 0 1.05em}
.doc p:last-child{margin-bottom:0}

.doc a{
  color:var(--ink);
  font-weight:600;
  text-decoration:none;
  border-bottom:3px solid var(--red);
}

.doc a:hover{background:var(--blue)}

.doc ul,.doc ol{padding-left:1.4em;margin:0 0 1em}

.doc li{margin:.3em 0}

.doc img{
  display:block;
  max-width:100%;
  height:auto;
  margin:1.1em 0;
  border:var(--bd);
  border-radius:8px;
}

.doc blockquote{
  margin:1.1em 0;
  padding:12px 18px;
  border:var(--bd);
  border-left-width:9px;
  border-left-color:var(--red);
  border-radius:8px;
  background:#fff;
}

.doc blockquote p:last-child{margin-bottom:0}

.doc table{
  width:100%;
  border-collapse:collapse;
  margin:0 0 1em;
  font-size:16px;
}

.doc th,.doc td{
  border:2px solid var(--ink);
  padding:8px 10px;
  text-align:left;
}

.doc th{background:var(--blue)}

/* ---------- 页脚 ---------- */
.foot{
  margin-top:64px;
  background:var(--ink);
  color:var(--paper);
  border-top:8px solid var(--blue);
}

.fcta{
  max-width:var(--wrap);
  margin:0 auto;
  padding:34px 16px 26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}

.fcta-h{
  margin:0;
  font-size:clamp(24px,3.3vw,40px);
  line-height:1.2;
  color:#fff;
}

.fcta-h span{
  display:inline-block;
  padding-bottom:3px;
  border-bottom:6px solid var(--red);
}

.fcta-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:52px;
  padding:11px 24px;
  border:3px solid #fff;
  border-radius:999px;
  background:var(--red);
  color:var(--ink);
  font-size:17px;
  font-weight:700;
  text-decoration:none;
  box-shadow:5px 5px 0 #fff;
  transition:transform .12s ease,box-shadow .12s ease;
}

.fcta-btn:hover,
.fcta-btn:focus-visible{
  transform:translate(-2px,-2px);
  box-shadow:7px 7px 0 #fff;
}

.footrow{
  max-width:var(--wrap);
  margin:0 auto;
  padding:16px;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:12px;
  border-top:2px solid #2a2a2a;
}

.flogo{
  grid-column:1;
  justify-self:start;
  color:var(--paper);
  font-size:18px;
  text-decoration:none;
  padding:8px 0;
  min-height:40px;
}

.copy{
  grid-column:2;
  margin:0;
  text-align:center;
  font-size:16px;
  line-height:1.5;
  color:#cfc9ba;
}

.fnav{grid-column:3;justify-self:end}

.fnav ol{
  display:flex;
  flex-wrap:wrap;
  justify-content:flex-end;
  gap:2px 12px;
  margin:0;
  padding:0;
  list-style:none;
}

.fnav a{
  display:inline-block;
  padding:9px 2px;
  min-height:40px;
  color:var(--paper);
  font-size:16px;
  text-decoration:none;
  border-bottom:2px solid transparent;
}

.fnav a:hover,
.fnav a:focus-visible{
  color:var(--blue);
  border-bottom-color:var(--blue);
}

/* ---------- 动效 ---------- */
.rv{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .5s ease,transform .5s ease;
}

.rv.in{
  opacity:1;
  transform:none;
}

.mast.scrolled{border-bottom-color:var(--ink);box-shadow:0 4px 0 rgba(0,0,0,.18)}

/* ---------- 响应式 ---------- */
@media (max-width:900px){
  .wrap{grid-template-columns:minmax(0,1fr)}
  .side{position:static}
  .side-list{
    grid-auto-flow:column;
    grid-auto-columns:max-content;
    gap:8px;
    overflow-x:auto;
    padding-bottom:4px;
  }
  .side-list a{white-space:nowrap}
  main div[id]{scroll-margin-top:180px}
}

@media (max-width:720px){
  .hero{
    grid-template-columns:minmax(0,1fr);
    min-height:0;
    gap:16px;
    margin-top:16px;
  }
  .hero-txt{order:-1;text-align:left}
  .hero h1::after{margin-left:0}
  .lead{margin-left:0}
  .bignum{top:-26px;right:0}
  .hero-art{aspect-ratio:16/10;box-shadow:6px 6px 0 var(--ink)}
  .btxt{font-size:20px}
  .doc div{padding:16px 14px 20px}
  .footrow{grid-template-columns:minmax(0,1fr);justify-items:center;text-align:center}
  .flogo,.copy,.fnav{grid-column:1}
  .flogo,.fnav{justify-self:center}
  .fnav ol{justify-content:center}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .rv{opacity:1;transform:none;transition:none}
  .pills a,.cta,.fcta-btn,.side-list a{transition:none}
  .pills a:hover,.cta:hover,.fcta-btn:hover{transform:none}
}

button[aria-expanded]{min-width:44px;min-height:44px}