:root{
  --ink-950:#050A12;
  --ink-900:#0A1324;
  --ink-800:#111F36;
  --ink-700:#1E3352;
  --gold:#D8A64A;
  --gold-bright:#F3CE7B;
  --cinnabar:#C64532;
  --jade:#4FA79A;
  --cream:#F6F0E4;
  --mist:#A7B2C2;
  --font-sans:'Noto Sans SC','Source Han Sans SC','Microsoft YaHei',sans-serif;
  --font-num:'Barlow Condensed','Noto Sans SC','Source Han Sans SC','Microsoft YaHei',sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:88px;
  --rule:rgba(167,178,194,.16);
}

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

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 20px);
}

body{
  margin:0;
  min-height:100%;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(70% 44% at 84% -10%, rgba(216,166,74,.12), transparent 70%),
    radial-gradient(52% 38% at 4% 2%, rgba(79,167,154,.09), transparent 72%);
  background-repeat:no-repeat;
  color:var(--cream);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.78;
  letter-spacing:.012em;
  -webkit-font-smoothing:antialiased;
}

img,svg,video{display:block;max-width:100%}
img{height:auto}

h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.22;letter-spacing:.06em}
h1{font-size:clamp(2.1rem,4.6vw,4rem)}
h2{font-size:clamp(1.5rem,2.8vw,2.1rem)}
h3{font-size:clamp(1.12rem,1.7vw,1.35rem);letter-spacing:.04em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
::selection{background:rgba(216,166,74,.35);color:var(--cream)}

:focus-visible{
  outline:2px solid var(--gold-bright);
  outline-offset:3px;
  border-radius:6px;
}

.skip-link{
  position:fixed;
  top:.6rem;
  left:.6rem;
  z-index:200;
  display:inline-flex;
  align-items:center;
  padding:.6rem 1rem;
  border-radius:999px;
  background:var(--gold-bright);
  color:var(--ink-950);
  font-size:.82rem;
  font-weight:700;
  letter-spacing:.08em;
  box-shadow:0 18px 34px -20px rgba(0,0,0,.9);
  transform:translateY(-160%);
  transition:transform .28s var(--ease);
}
.skip-link:focus-visible{transform:translateY(0)}

/* ---------- 共享宽度 ---------- */
.shell{width:min(1240px,calc(100% - 2.5rem));margin-inline:auto}
.shell--narrow{width:min(880px,calc(100% - 2.5rem));margin-inline:auto}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:linear-gradient(180deg,rgba(10,19,36,.95),rgba(10,19,36,.76));
  border-bottom:1px solid rgba(216,166,74,.16);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  transition:background .45s var(--ease),border-color .45s var(--ease),box-shadow .45s var(--ease);
}
.site-header[data-scrolled]{
  background:linear-gradient(180deg,rgba(5,10,18,.96),rgba(5,10,18,.88));
  border-bottom-color:rgba(216,166,74,.34);
  box-shadow:0 22px 44px -34px rgba(0,0,0,.95);
}

.header-inner{
  width:min(1240px,calc(100% - 2.5rem));
  margin-inline:auto;
  display:flex;
  align-items:center;
  gap:1rem;
  min-height:var(--header-h);
  padding-block:.65rem;
  position:relative;
}

.brand-island{
  display:inline-flex;
  align-items:center;
  gap:.7rem;
  flex:0 0 auto;
  padding:.5rem .95rem .5rem .55rem;
  border-radius:999px;
  background:rgba(30,51,82,.55);
  border:1px solid rgba(216,166,74,.28);
  box-shadow:0 10px 26px -20px rgba(0,0,0,.95);
  transition:background .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease);
}
.brand-island:hover{
  background:rgba(30,51,82,.9);
  border-color:rgba(243,206,123,.7);
  transform:translateY(-1px);
}

.brand-mark{
  position:relative;
  width:34px;
  height:34px;
  flex:0 0 auto;
  display:grid;
  place-items:center;
}
.brand-mark::before{
  content:"";
  position:absolute;
  inset:1px;
  border:1.5px solid var(--gold);
  border-radius:9px;
  transform:rotate(45deg);
  opacity:.78;
}
.brand-mark__dot{
  width:10px;
  height:10px;
  border-radius:50%;
  background:var(--gold-bright);
  box-shadow:0 0 0 3px rgba(216,166,74,.16),0 0 16px 2px rgba(243,206,123,.65);
}

.brand-text{display:flex;flex-direction:column;line-height:1.25;overflow:hidden}
.brand-text__name{
  font-size:.94rem;
  font-weight:800;
  letter-spacing:.14em;
  color:var(--cream);
  white-space:nowrap;
}
.brand-text__meta{
  font-size:.66rem;
  letter-spacing:.16em;
  color:var(--mist);
  white-space:nowrap;
  transition:opacity .3s var(--ease),transform .3s var(--ease);
}
.site-header[data-scrolled] .brand-text__meta{opacity:0;transform:translateY(-5px)}

.site-nav{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:.55rem;
  min-width:0;
}

.nav-list{
  display:flex;
  align-items:center;
  gap:.12rem;
  padding:.3rem;
  border-radius:999px;
  background:rgba(17,31,54,.72);
  border:1px solid rgba(167,178,194,.14);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}
.nav-item{list-style:none}

.nav-link{
  position:relative;
  display:block;
  padding:.48rem .72rem;
  border-radius:999px;
  font-size:.84rem;
  font-weight:500;
  letter-spacing:.04em;
  color:var(--mist);
  white-space:nowrap;
  transition:color .25s var(--ease),background .25s var(--ease);
}
.nav-link:hover{color:var(--cream);background:rgba(216,166,74,.13)}
.nav-list .nav-link[aria-current="page"]{
  color:var(--gold-bright);
  background:rgba(216,166,74,.1);
  font-weight:700;
}
.nav-list .nav-link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:.2rem;
  width:16px;
  height:2px;
  border-radius:2px;
  transform:translateX(-50%);
  background:var(--gold);
  box-shadow:0 0 10px rgba(216,166,74,.85);
}

.nav-cta{
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  padding:.55rem 1rem;
  border-radius:999px;
  border:1px solid rgba(216,166,74,.55);
  background:linear-gradient(135deg,rgba(216,166,74,.18),rgba(198,69,50,.14));
  color:var(--gold-bright);
  font-size:.82rem;
  font-weight:700;
  letter-spacing:.06em;
  white-space:nowrap;
  transition:background .28s var(--ease),color .28s var(--ease),border-color .28s var(--ease);
}
.nav-cta::after{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--gold-bright);
  box-shadow:0 0 10px 1px rgba(243,206,123,.85);
  transition:background .28s var(--ease);
}
.nav-cta:hover{background:var(--gold);color:var(--ink-950);border-color:var(--gold)}
.nav-cta:hover::after{background:var(--ink-950);box-shadow:none}

.nav-toggle{
  display:none;
  align-items:center;
  gap:.55rem;
  margin-left:auto;
  padding:.5rem .85rem;
  border-radius:999px;
  background:rgba(30,51,82,.6);
  border:1px solid rgba(167,178,194,.22);
  color:var(--cream);
  font-size:.78rem;
  font-weight:700;
  letter-spacing:.16em;
  cursor:pointer;
  transition:border-color .25s var(--ease),color .25s var(--ease),background .25s var(--ease);
}
.nav-toggle:hover{border-color:rgba(243,206,123,.6)}
.nav-toggle__bars{display:grid;gap:4px;width:16px}
.nav-toggle__bars span{
  display:block;
  height:2px;
  border-radius:2px;
  background:var(--gold-bright);
  transition:transform .3s var(--ease);
}
.site-header[data-open] .nav-toggle{
  border-color:rgba(243,206,123,.75);
  color:var(--gold-bright);
  background:rgba(216,166,74,.14);
}
.site-header[data-open] .nav-toggle__bars span:first-child{transform:translateY(3px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars span:last-child{transform:translateY(-3px) rotate(-45deg)}

.header-progress{
  position:absolute;
  left:0;
  bottom:0;
  width:100%;
  height:2px;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--jade),var(--gold),var(--cinnabar));
  transition:transform .18s linear;
  pointer-events:none;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(3rem,7vw,6.5rem);
  padding-block:clamp(2.6rem,5vw,4rem) 1.6rem;
  overflow:hidden;
  background:
    radial-gradient(120% 92% at 10% 0%, rgba(30,51,82,.9), transparent 62%),
    linear-gradient(180deg,var(--ink-900),var(--ink-950));
  border-top:1px solid rgba(216,166,74,.3);
  color:var(--cream);
}
.footer-glow{
  position:absolute;
  right:-12%;
  bottom:-58%;
  width:min(520px,74vw);
  aspect-ratio:1;
  border-radius:50%;
  background:radial-gradient(circle,rgba(216,166,74,.26),transparent 66%);
  pointer-events:none;
}
.footer-inner{
  position:relative;
  width:min(1240px,calc(100% - 2.5rem));
  margin-inline:auto;
  display:grid;
  gap:2.2rem;
}
.footer-lead{display:grid;gap:.9rem;align-content:start}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:.6rem;
  font-size:1.06rem;
  font-weight:800;
  letter-spacing:.18em;
  color:var(--cream);
  transition:color .25s var(--ease);
}
.footer-brand::before{
  content:"";
  width:22px;
  height:2px;
  border-radius:2px;
  background:var(--gold);
  box-shadow:0 0 12px rgba(216,166,74,.8);
}
.footer-brand:hover{color:var(--gold-bright)}
.footer-tagline{
  max-width:32ch;
  font-size:.86rem;
  line-height:1.85;
  color:var(--mist);
  letter-spacing:.03em;
}
.footer-nav{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(118px,1fr));
  gap:1.6rem 1.1rem;
  align-content:start;
}
.footer-col{min-width:0}
.footer-heading{
  font-size:.7rem;
  font-weight:700;
  letter-spacing:.26em;
  color:var(--gold);
  padding-bottom:.5rem;
  border-bottom:1px solid rgba(216,166,74,.26);
}
.footer-list{display:grid;gap:.5rem;margin-top:.9rem}
.footer-link{
  position:relative;
  display:inline-block;
  font-size:.88rem;
  letter-spacing:.04em;
  color:var(--mist);
  transition:color .25s var(--ease);
}
.footer-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-2px;
  width:100%;
  height:1px;
  background:currentColor;
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .3s var(--ease);
}
.footer-link:hover{color:var(--gold-bright)}
.footer-link:hover::after{transform:scaleX(1)}

.footer-meta{
  display:grid;
  gap:.6rem;
  margin-top:.4rem;
  padding-top:1.35rem;
  border-top:1px dashed rgba(167,178,194,.22);
  font-size:.76rem;
  line-height:1.8;
  letter-spacing:.04em;
  color:var(--mist);
}
.footer-contact{color:#c8d0da}
.footer-legal{color:var(--mist)}
.footer-copy{color:rgba(167,178,194,.82)}

/* ---------- 通用文字组件 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  font-family:var(--font-num);
  font-size:.78rem;
  font-weight:600;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--gold);
}
.eyebrow::before{
  content:"";
  width:28px;
  height:1px;
  background:currentColor;
  box-shadow:0 0 10px rgba(216,166,74,.7);
}
.display-1{font-size:clamp(2.2rem,5vw,4.2rem);font-weight:800;letter-spacing:.08em;line-height:1.14}
.display-2{font-size:clamp(1.55rem,3vw,2.3rem);font-weight:800;letter-spacing:.06em;line-height:1.24}
.lead{font-size:clamp(1rem,1.4vw,1.12rem);line-height:1.8;color:#cfd6e0;max-width:58ch}
.section-head{display:grid;gap:.7rem;margin-bottom:clamp(1.3rem,2.6vw,2rem)}
.meta-note{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.6rem;
  font-size:.75rem;
  letter-spacing:.1em;
  color:var(--mist);
}
.hairline{
  border:0;
  height:1px;
  margin:clamp(1.8rem,4vw,3rem) 0;
  background:linear-gradient(90deg,rgba(216,166,74,.55),rgba(167,178,194,.14),transparent);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.78rem 1.35rem;
  border-radius:999px;
  border:1px solid transparent;
  background:transparent;
  color:var(--cream);
  font-size:.9rem;
  font-weight:700;
  letter-spacing:.08em;
  cursor:pointer;
  transition:transform .25s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--gold{
  background:linear-gradient(135deg,var(--gold),#c2912f);
  color:var(--ink-950);
  box-shadow:0 20px 38px -26px rgba(216,166,74,.95);
}
.btn--gold:hover{background:linear-gradient(135deg,var(--gold-bright),var(--gold))}
.btn--ghost{
  background:rgba(216,166,74,.07);
  border-color:rgba(216,166,74,.55);
  color:var(--gold-bright);
}
.btn--ghost:hover{background:rgba(216,166,74,.18);border-color:var(--gold)}
.btn--paper{background:var(--cream);color:var(--ink-900)}
.btn--paper:hover{background:#fff9ec}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.45rem;
  font-size:.74rem;
  letter-spacing:.1em;
  color:var(--mist);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:.45rem}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:rgba(167,178,194,.5)}
.breadcrumb a{color:var(--mist);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--gold-bright)}
.breadcrumb [aria-current="page"]{color:var(--gold-bright)}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:clamp(1rem,2vw,1.5rem)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr))}
.grid--split{grid-template-columns:minmax(0,1.55fr) minmax(0,.85fr)}

/* ---------- 展签磁贴 ---------- */
.slab{
  position:relative;
  padding:clamp(1.15rem,2.2vw,1.75rem);
  border-radius:26px 8px 26px 8px;
  background:linear-gradient(155deg,rgba(30,51,82,.92),rgba(17,31,54,.96));
  border:1px solid rgba(167,178,194,.16);
  transition:border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
}
.slab:hover{
  border-color:rgba(216,166,74,.46);
  transform:translateY(-3px);
  box-shadow:0 28px 52px -36px rgba(0,0,0,.95);
}
.slab__num{
  display:block;
  margin-bottom:.6rem;
  font-family:var(--font-num);
  font-size:1.9rem;
  line-height:1;
  letter-spacing:.06em;
  color:var(--gold);
}

.exhibit-tag{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.22rem .6rem;
  border-radius:5px;
  border:1px solid rgba(198,69,50,.5);
  background:rgba(198,69,50,.16);
  color:#f2a99c;
  font-size:.7rem;
  font-weight:700;
  letter-spacing:.14em;
  line-height:1.6;
}
.exhibit-tag::before{
  content:"";
  width:5px;
  height:5px;
  border-radius:50%;
  background:currentColor;
}
.exhibit-tag--gold{
  border-color:rgba(216,166,74,.55);
  background:rgba(216,166,74,.14);
  color:var(--gold-bright);
}
.exhibit-tag--jade{
  border-color:rgba(79,167,154,.55);
  background:rgba(79,167,154,.14);
  color:#8fd3c8;
}

/* ---------- 图片容器 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  isolation:isolate;
  aspect-ratio:16/10;
  border-radius:34px 10px 34px 10px;
  border:1px solid rgba(167,178,194,.16);
  background:
    radial-gradient(64% 84% at 22% 18%, rgba(216,166,74,.3), transparent 62%),
    radial-gradient(50% 60% at 82% 78%, rgba(79,167,154,.24), transparent 68%),
    linear-gradient(150deg,var(--ink-700),var(--ink-900));
}
.media-frame > img,
.media-frame > svg{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:38%;
  background:linear-gradient(180deg,transparent,rgba(5,10,18,.72));
  pointer-events:none;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1}
.media-frame--tall{aspect-ratio:3/4}
.media-frame__cap{
  position:absolute;
  left:1rem;
  bottom:1rem;
  z-index:1;
  font-size:.72rem;
  letter-spacing:.16em;
  color:var(--cream);
  opacity:.86;
}

/* ---------- 正文长文 ---------- */
.prose{max-width:72ch;font-size:1.02rem;line-height:1.85;color:#e8e2d6}
.prose p + p{margin-top:1rem}
.prose h2{margin-top:2.2rem;margin-bottom:.9rem}
.prose h3{margin-top:1.6rem;margin-bottom:.6rem;color:var(--gold-bright)}
.prose ul,.prose ol{display:grid;gap:.4rem;margin:1rem 0;padding-left:1.25rem;list-style:disc}
.prose ol{list-style:decimal}
.prose li::marker{color:var(--gold)}
.prose strong{color:var(--gold-bright);font-weight:700}
.prose a{color:var(--gold-bright);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.prose hr{border:0;border-top:1px solid rgba(167,178,194,.2);margin:2rem 0}

/* ---------- 显现协议 ---------- */
[data-reveal]{transition:opacity .7s var(--ease),transform .7s var(--ease)}
html[data-reveal="on"] [data-reveal]{opacity:0;transform:translateY(18px)}
html[data-reveal="on"] [data-reveal][data-reveal-state="in"]{opacity:1;transform:none}

/* ---------- 平板 ---------- */
@media (max-width:1180px){
  .nav-link{padding:.45rem .58rem;font-size:.79rem}
  .nav-cta{padding:.5rem .78rem;font-size:.77rem}
  .brand-text__meta{display:none}
}

@media (min-width:880px){
  .footer-inner{
    grid-template-columns:minmax(0,.95fr) minmax(0,1.35fr);
    column-gap:3rem;
    align-items:start;
  }
  .footer-meta{
    grid-column:1 / -1;
    grid-template-columns:minmax(0,1fr) auto;
    grid-template-areas:
      "contact copy"
      "legal legal";
    align-items:center;
    column-gap:2rem;
  }
  .footer-contact{grid-area:contact}
  .footer-legal{grid-area:legal}
  .footer-copy{grid-area:copy;text-align:right}
}

/* ---------- 移动端 ---------- */
@media (max-width:920px){
  :root{--header-h:74px}
  .header-inner{gap:.6rem;padding-block:.5rem}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;
    top:calc(100% - .25rem);
    left:.9rem;
    right:.9rem;
    z-index:70;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:.8rem;
    padding:.85rem;
    border-radius:24px;
    background:linear-gradient(180deg,rgba(17,31,54,.99),rgba(10,19,36,.99));
    border:1px solid rgba(216,166,74,.32);
    box-shadow:0 34px 64px -34px rgba(0,0,0,.98);
    max-height:calc(100vh - 110px);
    overflow:auto;
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transform:translateY(-10px) scale(.985);
    transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s;
  }
  .site-header[data-open] .site-nav{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:none;
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:.14rem;
    padding:0;
    background:transparent;
    border:0;
    -webkit-backdrop-filter:none;
    backdrop-filter:none;
  }
  .nav-link{
    padding:.72rem .9rem;
    border-radius:14px;
    font-size:.94rem;
    letter-spacing:.05em;
  }
  .nav-list .nav-link[aria-current="page"]::after{
    left:auto;
    right:.95rem;
    bottom:.62rem;
    transform:none;
  }
  .nav-cta{justify-content:center;padding:.72rem 1rem}
  .grid--split{grid-template-columns:minmax(0,1fr)}
}

@media (max-width:600px){
  .shell,.shell--narrow,.header-inner,.footer-inner{width:calc(100% - 1.8rem)}
  .brand-island{padding:.42rem .75rem .42rem .45rem;gap:.55rem}
  .brand-text__name{font-size:.85rem;letter-spacing:.1em}
  .brand-mark{width:28px;height:28px}
  .footer-meta{font-size:.73rem}
}

/* ---------- 减少动态 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  html[data-reveal="on"] [data-reveal]{opacity:1;transform:none}
  .btn:hover,.slab:hover,.brand-island:hover{transform:none}
  .header-progress{transition:none}
}