@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@300;400;500;700&family=Noto+Serif+TC:wght@400;500;600;700&display=swap');

:root{
  --ink:#000000;
  --deep:#050505;
  --panel:#090909;
  --panel2:#121212;
  --line:#232323;
  --line2:#171717;
  --txt:#e6e6e6;
  --dim:#9c9c9c;
  --gold:#d8b264;
  --blue:#16233a;
  --rail:212px;
  --strip:34px;
  color-scheme: dark;
}

*,*::before,*::after{box-sizing:border-box}

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
  background:var(--ink);
}

body{
  margin:0;
  background:var(--ink);
  color:var(--txt);
  font-family:'Noto Sans TC',-apple-system,'PingFang TC','Microsoft JhengHei','Helvetica Neue',sans-serif;
  font-size:17px;
  line-height:1.78;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

p{margin:0 0 1em}
a{color:var(--txt);text-decoration:none}
a:hover{color:var(--gold)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

h1,h2,h3{
  font-family:'Noto Serif TC','Songti TC',Georgia,serif;
  font-weight:600;
  line-height:1.32;
  letter-spacing:.045em;
  margin:0 0 .5em;
}

/* 顶部细条 */
.strip{
  position:fixed;
  inset:0 0 auto 0;
  height:var(--strip);
  display:flex;
  align-items:center;
  justify-content:flex-end;
  padding:0 26px;
  background:var(--deep);
  border-bottom:1px solid var(--line2);
  z-index:60;
}
.strip-t{
  margin:0;
  font-size:16px;
  letter-spacing:.34em;
  color:#7d6a44;
  text-shadow:0 0 10px rgba(216,178,100,.28);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

/* 左侧竖排栏 */
.rail{
  position:fixed;
  top:var(--strip);
  left:0;
  bottom:0;
  width:var(--rail);
  padding:26px 20px 30px;
  background:var(--deep);
  border-right:1px solid var(--line2);
  display:flex;
  flex-direction:column;
  gap:18px;
  z-index:50;
  overflow-y:auto;
}
.brand{
  display:block;
  font-family:'Noto Serif TC',Georgia,serif;
  font-size:21px;
  line-height:1.4;
  letter-spacing:.16em;
  color:#f2f2f2;
  padding:6px 0 8px;
  border-bottom:1px solid var(--line);
  text-shadow:0 0 14px rgba(216,178,100,.2);
}
.brand:hover{color:var(--gold)}
.rail-slash{
  display:block;
  height:5px;
  width:74px;
  background:linear-gradient(90deg,var(--gold),rgba(216,178,100,0));
  transform:skewX(-32deg);
  transform-origin:left center;
}
.rail-nav{
  display:flex;
  flex-direction:column;
  gap:16px;
}
.grp-t{
  cursor:pointer;
  list-style:none;
  font-size:16px;
  letter-spacing:.3em;
  color:#6f6f6f;
  padding:4px 0;
  border-bottom:1px dashed #1e1e1e;
}
.grp-t::-webkit-details-marker{display:none}
.grp-t::before{
  content:'';
  display:inline-block;
  width:9px;
  height:2px;
  margin-right:9px;
  vertical-align:middle;
  background:var(--gold);
}
.grp-l{
  list-style:none;
  margin:6px 0 0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:2px;
}
.grp-l a{
  display:flex;
  align-items:center;
  min-height:42px;
  padding:8px 10px;
  font-size:16px;
  color:#cfcfcf;
  border-left:2px solid transparent;
  border-radius:4px;
  transition:border-color .25s, background .25s, color .25s, transform .25s;
}
.grp-l a:hover,
.grp-l a:focus-visible{
  color:#fff;
  background:var(--panel2);
  border-left-color:var(--gold);
  transform:translateX(3px);
}

/* 主区 */
main{
  padding:calc(var(--strip) + 0px) 0 0 var(--rail);
  display:block;
}

.hero{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1.12fr) minmax(0,1fr);
  min-height:45vh;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero-fig{
  margin:0;
  position:relative;
  background:linear-gradient(125deg,#080808,#131313 62%,#080808);
  min-height:45vh;
}
.hero-fig img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.86) brightness(.82);
}
.hero-fig::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(0,0,0,.05) 30%,rgba(0,0,0,.9));
  pointer-events:none;
}
.hero-shim{
  position:absolute;
  inset:0;
  background:repeating-linear-gradient(118deg,#0c0c0c 0 20px,#111111 20px 40px);
}
.hero-txt{
  position:relative;
  z-index:2;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:flex-end;
  text-align:right;
  padding:42px 44px 46px 56px;
  background:var(--ink);
}
.hero-txt::before{
  content:'';
  position:absolute;
  left:-46px;
  top:0;
  bottom:0;
  width:92px;
  background:var(--ink);
  transform:skewX(-10deg);
  border-right:2px solid var(--gold);
  box-shadow:14px 0 40px rgba(0,0,0,.9);
}
.hero-h1{
  font-size:clamp(27px,3.5vw,44px);
  margin:0 0 .45em;
  color:#fbfbfb;
  text-shadow:0 0 18px rgba(216,178,100,.2);
}
.lead{
  margin:0;
  max-width:34ch;
  color:var(--dim);
  font-size:17px;
  border-top:1px solid var(--line);
  padding-top:14px;
}

/* 内容区 */
.body-wrap{
  display:grid;
  grid-template-columns:196px minmax(0,1fr);
  gap:36px;
  max-width:1160px;
  margin:0 auto;
  padding:36px 40px 64px;
}
.index{
  align-self:start;
  position:sticky;
  top:calc(var(--strip) + 22px);
  border-left:2px solid var(--line);
  padding-left:16px;
}
.index h2{
  font-size:16px;
  letter-spacing:.28em;
  margin:0 0 .3em;
  color:#8a8a8a;
}
.subtitle{
  margin:0 0 14px;
  font-size:16px;
  color:#5f5f5f;
  letter-spacing:.16em;
}
.index-l{
  list-style:none;
  counter-reset:ix;
  margin:0;
  padding:0;
}
.index-l li{counter-increment:ix}
.index-l a{
  display:block;
  padding:8px 0;
  font-size:16px;
  color:#a9a9a9;
  border-bottom:1px solid #141414;
  transition:color .2s, padding-left .2s;
}
.index-l a::before{
  content:counter(ix,decimal-leading-zero);
  font-family:'Noto Sans TC',sans-serif;
  font-size:16px;
  color:#494949;
  margin-right:9px;
}
.index-l a:hover{color:var(--gold);padding-left:4px}

.content{min-width:0}
.content > section[id]{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line2);
  border-radius:4px;
  padding:26px 28px 32px;
  margin:0 0 20px;
}
.content > section[id]::after{
  content:'';
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  border-radius:0 0 4px 4px;
  background:linear-gradient(90deg,var(--gold),rgba(216,178,100,.15) 55%,rgba(0,0,0,0));
  opacity:.45;
  transition:opacity .3s;
}
.content > section[id]:hover::after{opacity:1}
.content > section[id]:last-child{margin-bottom:0}
main [id]{scroll-margin-top:calc(var(--strip) + 20px)}

.content h2{
  font-size:clamp(21px,2.3vw,27px);
  color:#f4f4f4;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
  text-shadow:0 0 12px rgba(216,178,100,.14);
}
.content h3{
  font-size:19px;
  color:#e4d3ac;
  margin-top:1.6em;
}
.content p{color:#c7c7c7}
.content a{
  color:var(--gold);
  border-bottom:1px solid rgba(216,178,100,.35);
}
.content a:hover{border-bottom-color:var(--gold)}
.content ul,.content ol{padding-left:1.35em;color:#c7c7c7}
.content li{margin:.4em 0}
.content li::marker{color:#6d5c3a}
.content figure{margin:1.4em 0}
.content figure img{max-width:100%;height:auto;border-radius:4px;display:block}
.content blockquote{
  margin:1.5em 0;
  padding:14px 20px;
  border-left:3px solid var(--blue);
  background:#07080d;
  color:#b9c2d0;
  border-radius:0 4px 4px 0;
}
.content table{
  width:100%;
  border-collapse:collapse;
  margin:1.4em 0;
  font-size:16px;
}
.content th,.content td{
  border:1px solid var(--line);
  padding:10px 12px;
  text-align:left;
}
.content th{background:var(--panel2);color:#dcdcdc}
.content code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:15px;
  background:#111;
  padding:1px 6px;
  border-radius:3px;
}
.content strong{color:#fff}

/* 页脚 */
.foot{
  margin-left:var(--rail);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:26px 40px;
  padding:34px 40px;
  background:var(--deep);
  border-top:1px solid var(--line);
}
.foot-nav dl{
  margin:0;
  display:flex;
  flex-wrap:wrap;
  gap:6px 26px;
  align-items:baseline;
}
.foot-nav dt{
  font-size:16px;
  letter-spacing:.26em;
  color:#5f5f5f;
  border-bottom:1px solid #1d1d1d;
  padding-bottom:4px;
}
.foot-nav dd{margin:0 0 4px}
.foot-nav nav a{}
.foot-nav dd a{
  display:inline-flex;
  align-items:center;
  min-height:42px;
  padding:6px 2px;
  font-size:16px;
  color:#b5b5b5;
  transition:color .2s;
}
.foot-nav dd a:hover{color:var(--gold)}
.foot-cta{
  display:flex;
  align-items:center;
  gap:18px;
  padding:14px 22px;
  border:1px solid #262019;
  border-radius:4px;
  background:linear-gradient(100deg,#0b0a07,#121212);
}
.cta-brand{
  margin:0;
  font-family:'Noto Serif TC',Georgia,serif;
  font-size:20px;
  letter-spacing:.14em;
  color:#efe7d5;
}
.cta-a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 18px;
  border-radius:4px;
  background:var(--gold);
  color:#0a0a0a;
  font-size:16px;
  font-weight:500;
  transition:filter .2s, transform .2s;
}
.cta-a:hover{color:#0a0a0a;filter:brightness(1.12);transform:translateY(-1px)}
.foot-legal{text-align:right}
.cr{
  margin:0;
  font-size:16px;
  color:#5c5c5c;
  letter-spacing:.1em;
}

/* 入场动效 */
.rv{opacity:0;transform:translateY(14px)}
.rv.in{opacity:1;transform:none;transition:opacity .55s ease, transform .55s ease}

@media (max-width:1024px){
  :root{--rail:196px}
  .body-wrap{grid-template-columns:172px minmax(0,1fr);gap:26px;padding:30px 26px 54px}
  .hero-txt{padding:36px 30px 38px 44px}
}

@media (max-width:860px){
  .strip{
    position:static;
    height:auto;
    padding:7px 16px;
    justify-content:flex-start;
  }
  .strip-t{font-size:16px;letter-spacing:.24em}
  .rail{
    position:static;
    width:auto;
    border-right:0;
    border-bottom:1px solid var(--line);
    padding:14px 16px 16px;
    gap:12px;
    overflow:visible;
  }
  .brand{
    font-size:19px;
    padding:4px 0 8px;
    border-bottom:0;
  }
  .rail-slash{width:56px;height:4px;margin-bottom:2px}
  .rail-nav{
    flex-direction:row;
    align-items:stretch;
    gap:12px;
    overflow-x:auto;
    padding-bottom:4px;
    -webkit-overflow-scrolling:touch;
  }
  .grp{display:flex;align-items:center}
  .grp-t{display:none}
  .grp-l{
    flex-direction:row;
    margin:0;
    gap:8px;
  }
  .grp-l a{
    min-height:44px;
    padding:10px 14px;
    border:1px solid #242424;
    border-left:1px solid #242424;
    border-radius:4px;
    background:#0b0b0b;
    white-space:nowrap;
    font-size:16px;
  }
  .grp-l a:hover{transform:none}
  main{padding:0}
  .hero{
    grid-template-columns:1fr;
    min-height:0;
  }
  .hero-fig{min-height:38vh;order:2}
  .hero-fig::after{background:linear-gradient(180deg,rgba(0,0,0,.75),rgba(0,0,0,0) 60%)}
  .hero-txt{
    order:1;
    align-items:flex-start;
    text-align:right;
    padding:26px 18px 22px;
    background:var(--panel2);
    border-bottom:2px solid var(--gold);
  }
  .hero-txt::before{
    left:0;
    right:0;
    top:auto;
    bottom:0;
    width:auto;
    height:35px;
    transform:skewY(-3deg);
    transform-origin:left bottom;
    border-right:0;
    box-shadow:none;
    opacity:.55;
  }
  .hero-h1{font-size:clamp(25px,7.4vw,32px)}
  .lead{max-width:none;font-size:16px}
  .body-wrap{
    grid-template-columns:minmax(0,1fr);
    gap:20px;
    padding:22px 16px 44px;
  }
  .index{
    position:static;
    border-left:0;
    border-top:1px solid var(--line);
    padding:14px 0 0;
  }
  .index-l{
    display:flex;
    flex-wrap:wrap;
    gap:6px 14px;
  }
  .index-l a{
    border-bottom:0;
    padding:6px 0;
  }
  .content > section[id]{padding:22px 16px 26px;margin-bottom:16px}
  .foot{
    margin-left:0;
    flex-direction:column;
    align-items:flex-start;
    gap:20px;
    padding:26px 16px 34px;
  }
  .foot-nav dl{gap:4px 18px}
  .foot-nav dt{width:100%;margin-top:8px}
  .foot-cta{width:100%;justify-content:space-between}
  .foot-legal{text-align:left;width:100%}
}

@media (max-width:400px){
  body{font-size:16px}
  .hero-txt{padding:22px 14px 18px}
  .content > section[id]{padding:20px 13px 24px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
  }
  .rv{opacity:1;transform:none}
}

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