:root{
  --ink-0:#0A0B0D;
  --ink-1:#14161B;
  --gold:#C9A227;
  --gold-hi:#F3D67A;
  --copper:#9C3A22;
  --mist:#8E9AA6;
  --cloud:#EDEEF1;
  --line:#262B33;
  --teal-deep:#4E7C7A;

  --font-cjk:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-latin:"Helvetica Neue",Arial,"Helvetica",system-ui,sans-serif;

  --step-12:0.75rem;
  --step-14:0.875rem;
  --step-17:1.0625rem;
  --step-22:1.375rem;
  --step-32:2rem;
  --step-48:3rem;
  --step-84:5.25rem;

  --gutter:clamp(1.15rem,4vw,3.5rem);
  --maxw:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-0);
  color:var(--cloud);
  font-family:var(--font-cjk);
  font-size:var(--step-17);
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,p,figure{margin:0}
ul,ol{margin:0;padding:0}
img,svg,video{display:block;max-width:100%}
a{color:var(--gold-hi)}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
::selection{background:rgba(201,162,39,.28);color:var(--cloud)}

.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}

h1,.display{font-weight:300;font-size:clamp(2.6rem,7vw,5.4rem);line-height:1.05;letter-spacing:-.01em}
h2,.heading{font-weight:900;font-size:clamp(1.5rem,3vw,2rem);line-height:1.2;letter-spacing:-.02em}
h3{font-weight:900;font-size:var(--step-22);line-height:1.3;letter-spacing:-.01em}
.body-sm{font-size:var(--step-14);line-height:1.7}

.prose{max-width:34em;font-size:var(--step-17);line-height:1.75;color:var(--cloud)}
.prose--dim{color:var(--mist)}

.index-latin{
  font-family:var(--font-latin);
  font-size:var(--step-12);
  line-height:1.4;
  letter-spacing:.12em;
  text-transform:uppercase;
  font-weight:600;
}
.index-num{
  font-variant-numeric:tabular-nums;
  font-size:var(--step-12);
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--gold);
  font-weight:600;
}
.num{font-variant-numeric:tabular-nums}

.section-label{
  display:inline-flex;
  align-items:center;
  gap:.6em;
  font-family:var(--font-latin);
  font-size:var(--step-12);
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--gold);
}
.section-label::before{content:"";width:26px;height:1px;background:var(--gold)}

.rule{height:0;border:0;border-top:1px solid var(--line);margin:0}
.rule--gold{border-top:0;height:1px;background:linear-gradient(90deg,var(--gold),var(--teal-deep) 55%,transparent)}

.grid-12{display:grid;grid-template-columns:repeat(12,1fr);gap:clamp(1rem,2.4vw,2rem)}
.col-3{grid-column:span 3}
.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}
.col-9{grid-column:span 9}
.col-12{grid-column:1/-1}
@media (max-width:960px){
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9{grid-column:1/-1}
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  gap:.55em;
  padding:.62em 1.1em;
  border:1px solid var(--line);
  background:transparent;
  color:var(--cloud);
  font-size:var(--step-14);
  font-weight:700;
  letter-spacing:.04em;
  text-decoration:none;
  cursor:pointer;
  transition:color .28s var(--ease),border-color .28s var(--ease),background-color .28s var(--ease),transform .28s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn--gold{
  border-color:var(--gold);
  color:var(--gold-hi);
  background:linear-gradient(120deg,rgba(201,162,39,.16),rgba(78,124,122,.16));
}
.btn--gold:hover{color:var(--ink-0);background:linear-gradient(120deg,var(--gold-hi),var(--gold))}
.btn--ghost{border-color:var(--gold);color:var(--gold-hi)}
.btn--ghost:hover{background:rgba(201,162,39,.1)}
.btn--quiet{border-color:transparent;color:var(--mist);padding-inline:.45em}
.btn--quiet:hover{color:var(--gold-hi)}

/* 面包屑 */
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  gap:.5rem;
  list-style:none;
  margin:0;
  padding:0;
  font-family:var(--font-latin);
  font-size:var(--step-12);
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--mist);
}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:.5rem}
.breadcrumbs__link{color:var(--mist);text-decoration:none;transition:color .24s var(--ease)}
.breadcrumbs__link:hover{color:var(--gold-hi)}
.breadcrumbs__sep{color:var(--line)}
.breadcrumbs__current{color:var(--gold)}

/* 图片容器基础规则 */
.media-frame{
  position:relative;
  display:block;
  width:100%;
  background:
    radial-gradient(120% 90% at 15% 0%,rgba(201,162,39,.14),transparent 60%),
    var(--ink-1);
  border:1px solid var(--line);
  overflow:hidden;
}
.media-frame::after{
  content:"";
  position:absolute;
  right:10px;
  bottom:10px;
  width:34px;
  height:6px;
  background:repeating-linear-gradient(90deg,var(--gold) 0 5px,transparent 5px 9px);
  opacity:.7;
  pointer-events:none;
}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame__img{width:100%;height:100%;object-fit:cover;filter:saturate(.92) contrast(1.06) brightness(.96)}
.media-frame__caption{
  position:absolute;
  left:0;
  bottom:0;
  right:0;
  padding:.7rem .9rem;
  background:linear-gradient(0deg,rgba(10,11,13,.92),transparent);
  color:var(--mist);
  font-size:var(--step-12);
  letter-spacing:.06em;
}

/* 滚动显现 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .62s var(--ease),transform .62s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* 跳转链接 */
.skip-link{
  position:absolute;
  left:50%;
  top:-4rem;
  transform:translateX(-50%);
  z-index:120;
  padding:.6em 1.2em;
  background:var(--gold);
  color:var(--ink-0);
  font-size:var(--step-14);
  font-weight:700;
  text-decoration:none;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:.6rem}

/* ============ 头部 ============ */
.site-header{
  position:relative;
  z-index:40;
  background:var(--ink-1);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--gold) 16%,var(--teal-deep) 50%,var(--gold) 84%,transparent);
  opacity:.5;
  pointer-events:none;
}
.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:2px;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--gold),var(--gold-hi));
  z-index:110;
  pointer-events:none;
}
.masthead{padding-block:clamp(1rem,2.6vw,1.9rem) 0}

.masthead__top{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:1rem;
  padding-bottom:clamp(.9rem,2.2vw,1.5rem);
}
.masthead__index{justify-self:start;margin:0;color:var(--mist)}
.masthead__brand{
  justify-self:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:.4rem;
  text-align:center;
}
.masthead__mark{
  width:56px;
  height:6px;
  background:repeating-linear-gradient(90deg,var(--gold) 0 6px,transparent 6px 10px);
  opacity:.9;
}
.masthead__brandline{
  font-size:clamp(1.15rem,2.6vw,1.7rem);
  font-weight:900;
  letter-spacing:-.02em;
  color:var(--cloud);
  line-height:1.2;
}
.masthead__meta{font-size:var(--step-12);letter-spacing:.13em;color:var(--mist)}

.masthead__utility{
  justify-self:end;
  display:flex;
  align-items:center;
  justify-content:flex-end;
  flex-wrap:wrap;
  gap:.7rem;
}
.utility-list{display:flex;flex-wrap:wrap;gap:.7rem;list-style:none;margin:0;padding:0}
.utility-item{
  font-family:var(--font-latin);
  font-size:var(--step-12);
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--mist);
  border-bottom:1px dotted var(--line);
  padding-bottom:2px;
}
.fav-toggle{
  display:inline-flex;
  align-items:center;
  gap:.42em;
  padding:.36em .72em;
  border:1px solid var(--line);
  background:transparent;
  color:var(--mist);
  font-size:var(--step-12);
  letter-spacing:.08em;
  cursor:pointer;
  transition:color .3s var(--ease),border-color .3s var(--ease),background-color .3s var(--ease);
}
.fav-toggle__star{
  font-size:.95em;
  line-height:1;
  color:var(--teal-deep);
  transition:color .3s var(--ease);
}
.fav-toggle__label{white-space:nowrap}
.fav-toggle:hover{border-color:var(--gold);color:var(--cloud)}
.fav-toggle[aria-pressed="true"]{
  border-color:var(--gold);
  color:var(--gold-hi);
  background:linear-gradient(135deg,rgba(201,162,39,.16),rgba(78,124,122,.16));
}
.fav-toggle[aria-pressed="true"] .fav-toggle__star{color:var(--gold-hi)}

.masthead__navrow{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:1rem;
  border-top:1px solid var(--line);
  padding-block:.5rem;
}
.nav{grid-column:2;justify-self:center}
.nav__list{display:flex;align-items:center;gap:clamp(.85rem,2.5vw,2.4rem);list-style:none;margin:0;padding:0}
.nav__item{list-style:none}
.nav__link{
  position:relative;
  display:inline-block;
  padding:.55rem .1rem;
  color:var(--cloud);
  font-size:var(--step-14);
  font-weight:700;
  letter-spacing:.02em;
  text-decoration:none;
  transition:color .24s var(--ease);
}
.nav__link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:.18rem;
  height:1px;
  background:var(--gold);
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .3s var(--ease);
}
.nav__link:hover{color:var(--gold-hi)}
.nav__link:hover::after{transform:scaleX(1)}
.nav__link[aria-current="page"]{color:var(--gold-hi)}
.nav__link[aria-current="page"]::after{
  transform:scaleX(1);
  background:linear-gradient(90deg,var(--gold),var(--teal-deep));
}
.nav__toggle{
  display:none;
  align-items:center;
  gap:.55em;
  padding:.5em .85em;
  border:1px solid var(--line);
  background:transparent;
  color:var(--cloud);
  font-size:var(--step-12);
  letter-spacing:.14em;
  text-transform:uppercase;
  cursor:pointer;
}
.nav__toggle-bars{position:relative;display:inline-block;width:16px;height:10px}
.nav__toggle-bars::before,
.nav__toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  width:100%;
  height:1px;
  background:currentColor;
  transition:transform .3s var(--ease);
}
.nav__toggle-bars::before{top:0}
.nav__toggle-bars::after{bottom:0}
.site-header[data-open="true"] .nav__toggle{border-color:var(--gold);color:var(--gold-hi)}
.site-header[data-open="true"] .nav__toggle-bars::before{transform:translateY(4.5px) rotate(45deg)}
.site-header[data-open="true"] .nav__toggle-bars::after{transform:translateY(-4.5px) rotate(-45deg)}
.nav__toggle-label{white-space:nowrap}
.masthead__cta{grid-column:3;justify-self:end}

/* 跑马带 */
.ticker{
  display:flex;
  align-items:center;
  gap:1rem;
  border-top:1px solid var(--line);
  padding:.5rem var(--gutter);
  overflow:hidden;
}
.ticker__label{
  flex:0 0 auto;
  padding:.2em .6em;
  border:1px solid rgba(156,58,34,.55);
  background:rgba(156,58,34,.2);
  color:var(--gold-hi);
  font-family:var(--font-latin);
  font-size:var(--step-12);
  letter-spacing:.14em;
  text-transform:uppercase;
  font-weight:600;
}
.ticker__viewport{
  flex:1 1 auto;
  min-width:0;
  overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 4%,#000 96%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 4%,#000 96%,transparent);
}
.ticker__track{display:flex;width:max-content;animation:ticker-move 44s linear infinite}
.ticker__group{display:flex;align-items:center;gap:2.2rem;list-style:none;margin:0;padding:0 1.1rem}
.ticker__item{list-style:none}
.ticker__link{
  display:inline-flex;
  align-items:baseline;
  gap:.6em;
  color:var(--mist);
  font-size:var(--step-14);
  text-decoration:none;
  white-space:nowrap;
  transition:color .24s var(--ease);
}
.ticker__link:hover{color:var(--cloud)}
.ticker__stamp{
  font-family:var(--font-latin);
  font-size:var(--step-12);
  letter-spacing:.12em;
  color:var(--gold);
  font-variant-numeric:tabular-nums;
}
.ticker:hover .ticker__track{animation-play-state:paused}
@keyframes ticker-move{
  from{transform:translate3d(0,0,0)}
  to{transform:translate3d(-50%,0,0)}
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:clamp(3.5rem,10vh,8rem);
  background:var(--ink-1);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--gold) 20%,transparent 60%,var(--teal-deep));
  opacity:.55;
}
.footer__grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:clamp(1.4rem,3vw,2.6rem);
  padding-block:clamp(2.4rem,6vw,4.4rem) clamp(1.6rem,3vw,2.6rem);
}
.footer__brand{min-width:0}
.footer__wordmark{
  font-size:var(--step-22);
  font-weight:900;
  letter-spacing:-.02em;
  color:var(--cloud);
  margin-bottom:.6rem;
}
.footer__signature{
  max-width:26em;
  margin-bottom:1.1rem;
  color:var(--mist);
  font-size:var(--step-14);
  line-height:1.75;
}
.footer__contact{display:grid;gap:.45rem;list-style:none;margin:0;padding:0}
.footer__contact-item{color:var(--cloud);font-size:var(--step-14);line-height:1.7;word-break:break-word}
.footer__column{min-width:0}
.footer__title{
  margin-bottom:.85rem;
  padding-bottom:.6rem;
  border-bottom:1px solid var(--line);
  color:var(--gold);
  font-family:var(--font-latin);
  font-size:var(--step-12);
  letter-spacing:.14em;
  text-transform:uppercase;
  font-weight:600;
}
.footer__list{display:grid;gap:.55rem;list-style:none;margin:0;padding:0}
.footer__link{
  color:var(--cloud);
  font-size:var(--step-14);
  text-decoration:none;
  transition:color .24s var(--ease);
}
.footer__link:hover{color:var(--gold-hi)}
.footer__text{color:var(--mist);font-size:var(--step-14)}
.footer__bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.7rem 1.6rem;
  padding-block:1.15rem;
  border-top:1px solid var(--line);
}
.footer__icp{
  color:var(--mist);
  font-size:var(--step-12);
  letter-spacing:.1em;
  font-variant-numeric:tabular-nums;
}
.footer__note{color:var(--mist);font-size:var(--step-12);letter-spacing:.04em}

/* ============ 响应式 ============ */
@media (max-width:960px){
  .footer__grid{grid-template-columns:1fr 1fr}
  .footer__brand{grid-column:1/-1}
}
@media (max-width:860px){
  .masthead__top{
    grid-template-columns:1fr;
    justify-items:center;
    text-align:center;
    gap:.9rem;
  }
  .masthead__index{justify-self:center}
  .masthead__utility{justify-self:center;justify-content:center}
  .masthead__navrow{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:.75rem;
    padding-block:.65rem;
  }
  .nav__toggle{display:inline-flex;order:1}
  .masthead__cta{order:2;margin-left:auto}
  .nav{
    order:3;
    flex:0 0 100%;
    display:none;
    justify-self:stretch;
    border-top:1px dashed var(--line);
    padding-top:.4rem;
  }
  .nav[data-open="true"]{display:block}
  .nav__list{flex-direction:column;align-items:stretch;gap:0}
  .nav__item{border-bottom:1px solid var(--line)}
  .nav__item:last-child{border-bottom:0}
  .nav__link{display:block;padding:.85rem .2rem;font-size:var(--step-17)}
  .nav__link::after{display:none}
  .nav__link[aria-current="page"]{color:var(--gold-hi)}
  .nav__link[aria-current="page"]::before{
    content:"▸";
    margin-right:.5em;
    color:var(--gold);
  }
}
@media (max-width:620px){
  .footer__grid{grid-template-columns:1fr}
  .ticker{flex-direction:column;align-items:flex-start;gap:.5rem}
  .ticker__viewport{width:100%}
  .footer__bottom{flex-direction:column;align-items:flex-start}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .ticker__track{animation:none;transform:none}
  .ticker__viewport{overflow-x:auto;-webkit-mask-image:none;mask-image:none}
  .reveal{opacity:1;transform:none}
  .btn:hover{transform:none}
}