*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0}

:root{
  --deep:#0A1A2F;
  --ink:#050D1A;
  --steel:#2C4F73;
  --silver:#E9F0F7;
  --white:#FFFFFF;
  --orange:#FF6B2C;
  --green:#7ED957;
  --mist:#8D9BAE;
  --cyan:#68D8FF;
  --charcoal:#111820;

  --font-display:'Archivo Black','Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --font-mono:'JetBrains Mono','IBM Plex Mono','SFMono-Regular',ui-monospace,'Courier New',monospace;

  --radius-lg:26px;
  --radius-md:16px;
  --radius-pill:999px;
  --dur:200ms;
  --ease:cubic-bezier(0.2,0.8,0.2,1);
  --line-dark:rgba(141,155,174,0.28);
  --line-light:rgba(17,24,32,0.12);
  --shadow-sticker:0 22px 48px -26px rgba(5,13,26,0.92);
}

body{
  font-family:var(--font-body);
  font-size:clamp(15.5px,0.35vw + 14.4px,18px);
  line-height:1.8;
  letter-spacing:0.01em;
  font-weight:400;
  background:var(--deep);
  color:var(--silver);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
.section a:focus-visible,.site-footer a:focus-visible,.site-header a:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}

.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

.wrap{width:min(1180px,100% - 2.4rem);margin-inline:auto}
@media (max-width:640px){.wrap{width:calc(100% - 1.8rem)}}

.mono{font-family:var(--font-mono);letter-spacing:0.06em;font-variant-numeric:tabular-nums}

/* ============ 布局与内容带 ============ */
.section{padding-block:clamp(2.6rem,6vw,5rem)}
.section--deep{background:var(--deep);color:var(--silver)}
.section--ink{background:var(--ink);color:var(--silver)}
.section--silver{background:var(--silver);color:var(--charcoal)}
.section--silver .eyebrow{color:var(--steel)}
.section--silver .eyebrow::before{background:var(--orange)}

.grid{display:grid;gap:clamp(1rem,2vw,1.75rem)}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.grid--split{grid-template-columns:minmax(0,7fr) minmax(0,4fr)}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}
@media (max-width:900px){
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .grid--split{grid-template-columns:minmax(0,1fr)}
  .span-4,.span-5,.span-6,.span-7,.span-8,.span-12{grid-column:1 / -1}
}

/* ============ 通用文字组件 ============ */
.eyebrow{
  display:inline-flex;align-items:center;gap:0.6rem;
  font-family:var(--font-mono);font-size:0.7rem;font-weight:600;
  letter-spacing:0.2em;text-transform:uppercase;color:var(--mist);
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--orange);flex:none}

.tag{
  display:inline-flex;align-items:center;gap:0.35rem;
  padding:0.28rem 0.72rem;border-radius:var(--radius-pill);
  font-family:var(--font-mono);font-size:0.68rem;font-weight:600;
  letter-spacing:0.1em;text-transform:uppercase;
  background:rgba(104,216,255,0.12);color:var(--cyan);
  border:1px solid rgba(104,216,255,0.28);
}
.tag--accent{background:rgba(255,107,44,0.14);color:var(--orange);border-color:rgba(255,107,44,0.42)}
.tag--ok{background:rgba(126,217,87,0.14);color:var(--green);border-color:rgba(126,217,87,0.42)}
.tag--muted{background:rgba(141,155,174,0.14);color:var(--mist);border-color:rgba(141,155,174,0.35)}
.section--silver .tag--muted{background:rgba(17,24,32,0.06);color:#4B5A6B;border-color:rgba(17,24,32,0.16)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:0.55rem;
  padding:0.78rem 1.45rem;border-radius:var(--radius-pill);
  font-size:0.95rem;font-weight:600;letter-spacing:0.01em;
  border:1px solid transparent;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),
             color var(--dur) var(--ease),border-color var(--dur) var(--ease),
             box-shadow var(--dur) var(--ease);
}
.btn--accent{background:var(--orange);color:#fff;box-shadow:0 14px 28px -18px rgba(255,107,44,0.95)}
.btn--accent:hover{background:#FF7F47;transform:translateY(-2px)}
.btn--ghost{border-color:rgba(141,155,174,0.45);color:inherit}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}
.btn--quiet{background:rgba(104,216,255,0.12);color:var(--cyan);border-color:rgba(104,216,255,0.32)}
.btn--quiet:hover{background:rgba(104,216,255,0.2);transform:translateY(-2px)}
.section--silver .btn--ghost{border-color:rgba(17,24,32,0.24);color:var(--charcoal)}
.section--silver .btn--ghost:hover{border-color:var(--orange);color:#C4470F}

/* ============ 卡片 / 说明牌 / 数据 ============ */
.panel{
  background:rgba(44,79,115,0.18);
  border:1px solid var(--line-dark);
  border-radius:var(--radius-lg);
  padding:clamp(1.3rem,2.4vw,2rem);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.panel:hover{transform:translateY(-3px);border-color:rgba(104,216,255,0.45);box-shadow:var(--shadow-sticker)}
.panel--light{background:var(--white);color:var(--charcoal);border-color:var(--line-light)}
.panel--light:hover{border-color:rgba(255,107,44,0.5)}

.sticker{
  position:relative;border-radius:var(--radius-lg);
  border:1px solid var(--line-dark);
  background:rgba(10,26,47,0.62);
  padding:clamp(1.3rem,2.4vw,2rem);
}
.sticker--stack{box-shadow:8px 8px 0 -1px var(--deep),8px 8px 0 0 rgba(141,155,174,0.32)}
.section--silver .sticker{background:var(--white);border-color:var(--line-light);color:var(--charcoal)}
.section--silver .sticker--stack{box-shadow:8px 8px 0 -1px var(--silver),8px 8px 0 0 rgba(17,24,32,0.16)}

.exhibit{
  display:flex;flex-direction:column;gap:0.3rem;
  padding:0.85rem 1rem;border-radius:var(--radius-md);
  background:var(--ink);border:1px solid rgba(141,155,174,0.25);
  border-left:3px solid var(--orange);
}
.exhibit__no{font-family:var(--font-mono);font-size:0.68rem;font-weight:600;letter-spacing:0.18em;color:var(--orange)}
.exhibit__label{font-size:0.9rem;color:var(--silver)}

.stat{display:flex;flex-direction:column;gap:0.25rem}
.stat__value{
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(2rem,4.6vw,3.4rem);line-height:1;
  letter-spacing:-0.02em;color:var(--white);font-variant-numeric:tabular-nums;
}
.stat__label{font-family:var(--font-mono);font-size:0.68rem;letter-spacing:0.16em;text-transform:uppercase;color:var(--mist)}
.section--silver .stat__value{color:var(--deep)}
.section--silver .stat__label{color:#4B5A6B}

/* ============ 面包屑 ============ */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:0.45rem;
  padding-block:1.1rem;font-family:var(--font-mono);
  font-size:0.72rem;letter-spacing:0.08em;color:var(--mist);
}
.crumbs a{color:var(--mist);transition:color var(--dur) var(--ease)}
.crumbs a:hover{color:var(--cyan)}
.crumbs__sep{color:rgba(141,155,174,0.5)}
.crumbs [aria-current="page"]{color:var(--silver)}

/* ============ 图片容器基础规则 ============ */
.media-frame{
  position:relative;display:grid;place-items:center;
  aspect-ratio:16 / 10;overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--line-dark);
  background:linear-gradient(135deg,rgba(44,79,115,0.55),rgba(5,13,26,0.92));
}
.media-frame::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:0.5;
  background-image:
    linear-gradient(rgba(104,216,255,0.12) 1px,transparent 1px),
    linear-gradient(90deg,rgba(104,216,255,0.12) 1px,transparent 1px);
  background-size:28px 28px;
}
.media-frame img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:4 / 5}
.media-frame__label{
  position:relative;z-index:1;padding:1rem;text-align:center;
  font-family:var(--font-mono);font-size:0.7rem;letter-spacing:0.2em;
  text-transform:uppercase;color:rgba(233,240,247,0.55);
}
@media (max-width:640px){.media-frame{aspect-ratio:4 / 3}.media-frame--wide{aspect-ratio:16 / 9}}

/* ============ 折叠面板 ============ */
.accordion{display:grid;gap:0.65rem}
.accordion__item{
  border:1px solid var(--line-dark);border-radius:var(--radius-md);
  background:rgba(44,79,115,0.16);overflow:hidden;
}
.section--silver .accordion__item{background:var(--white);border-color:var(--line-light)}
.accordion__trigger{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
  width:100%;padding:1rem 1.15rem;text-align:left;
  font-size:1rem;font-weight:600;color:inherit;
  transition:background var(--dur) var(--ease);
}
.accordion__trigger:hover{background:rgba(104,216,255,0.08)}
.accordion__icon{
  flex:none;width:11px;height:11px;margin-right:3px;
  border-right:2px solid var(--orange);border-bottom:2px solid var(--orange);
  transform:rotate(45deg);transition:transform var(--dur) var(--ease);
}
.accordion__trigger[aria-expanded="true"] .accordion__icon{transform:rotate(-135deg)}
.accordion__panel{
  max-height:0;overflow:hidden;padding-inline:1.15rem;padding-block:0;
  color:var(--mist);font-size:0.95rem;line-height:1.8;
  transition:max-height var(--dur) var(--ease),padding var(--dur) var(--ease);
}
.section--silver .accordion__panel{color:#4B5A6B}
.accordion__trigger[aria-expanded="true"] + .accordion__panel{max-height:32rem;padding-bottom:1.05rem}

/* ============ 表格基础 ============ */
.data-table{width:100%;border-collapse:collapse;font-size:0.92rem}
.data-table th,.data-table td{padding:0.8rem 1rem;text-align:left;border-bottom:1px solid var(--line-dark)}
.data-table th{
  font-family:var(--font-mono);font-size:0.7rem;font-weight:600;
  letter-spacing:0.14em;text-transform:uppercase;
  color:var(--mist);background:rgba(44,79,115,0.25);
}
.section--silver .data-table th,.section--silver .data-table td{border-bottom-color:var(--line-light)}
.section--silver .data-table th{background:rgba(17,24,32,0.05);color:#4B5A6B}

/* ============ 跳过链接 ============ */
.skip-link{
  position:fixed;top:-120px;left:1rem;z-index:200;
  padding:0.72rem 1.15rem;border-radius:var(--radius-pill);
  background:var(--orange);color:#fff;font-size:0.85rem;font-weight:600;
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:0.85rem}

/* ============ 头部 ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:linear-gradient(180deg,rgba(10,26,47,0.98),rgba(10,26,47,0.94));
  border-bottom:1px solid var(--line-dark);
  backdrop-filter:blur(10px);
}

.status-rail{background:var(--ink);border-bottom:1px solid rgba(104,216,255,0.16)}
.status-rail__inner{
  display:flex;align-items:center;justify-content:space-between;gap:1.2rem;
  min-height:34px;max-height:60px;overflow:hidden;
  transition:max-height var(--dur) var(--ease),min-height var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.status-rail__text{
  display:flex;align-items:center;gap:0.55rem;
  font-family:var(--font-mono);font-size:0.72rem;font-weight:500;
  letter-spacing:0.055em;color:var(--mist);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.status-rail__dot{
  flex:none;width:7px;height:7px;border-radius:50%;
  background:var(--green);box-shadow:0 0 0 3px rgba(126,217,87,0.18);
}
.status-rail__meta{
  flex:none;font-family:var(--font-mono);font-size:0.68rem;font-weight:600;
  letter-spacing:0.12em;color:var(--cyan);
}

.masthead__bar{
  display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;gap:1rem;padding-block:0.85rem;
}
.masthead__edition{
  justify-self:start;font-family:var(--font-mono);font-size:0.68rem;font-weight:600;
  letter-spacing:0.16em;color:rgba(141,155,174,0.9);
}
.masthead__brand{display:flex;flex-direction:column;align-items:center;gap:0.22rem;text-align:center}
.masthead__name{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(1.5rem,2.6vw,2.15rem);line-height:1.05;
  letter-spacing:-0.03em;color:var(--white);
  transition:color var(--dur) var(--ease),font-size var(--dur) var(--ease);
}
.masthead__brand:hover .masthead__name{color:var(--cyan)}
.masthead__tagline{
  font-family:var(--font-mono);font-size:0.64rem;font-weight:500;
  letter-spacing:0.2em;color:var(--mist);text-transform:uppercase;
}
.masthead__tools{justify-self:end;display:flex;align-items:center;gap:0.4rem}
.masthead__tool{
  padding:0.4rem 0.72rem;border-radius:var(--radius-pill);
  border:1px solid transparent;font-size:0.76rem;color:var(--mist);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.masthead__tool:hover{color:var(--white);border-color:rgba(141,155,174,0.4)}
.masthead__tool[aria-current="page"]{color:var(--orange);border-color:rgba(255,107,44,0.45)}

.nav-toggle{
  display:none;align-items:center;gap:0.5rem;
  padding:0.5rem 0.8rem;border-radius:var(--radius-pill);
  border:1px solid var(--line-dark);color:var(--silver);
  font-family:var(--font-mono);font-size:0.72rem;font-weight:600;letter-spacing:0.1em;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{
  position:relative;display:block;width:16px;height:2px;border-radius:2px;
  background:currentColor;box-shadow:0 -5px 0 currentColor,0 5px 0 currentColor;
  transition:box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{box-shadow:none;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{
  content:"";position:absolute;inset:0;border-radius:2px;
  background:currentColor;transform:rotate(90deg);
}

.primary-nav{
  border-top:1px solid var(--line-dark);border-bottom:1px solid var(--line-dark);
  background:linear-gradient(180deg,rgba(44,79,115,0.12),rgba(44,79,115,0));
}
.primary-nav__list{
  display:flex;flex-wrap:wrap;justify-content:center;gap:0.25rem;padding:0.45rem 0;
}
.primary-nav__link{
  position:relative;display:block;
  padding:0.5rem 0.95rem;border-radius:var(--radius-pill);
  font-size:0.92rem;font-weight:500;color:var(--silver);
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.primary-nav__link::after{
  content:"";position:absolute;left:50%;bottom:0.18rem;
  width:0;height:2px;border-radius:2px;background:var(--orange);
  transform:translateX(-50%);
  transition:width var(--dur) var(--ease);
}
.primary-nav__link:hover{color:var(--white);background:rgba(104,216,255,0.1)}
.primary-nav__link:hover::after{width:1.2rem}
.primary-nav__link[aria-current="page"]{color:var(--white)}
.primary-nav__link[aria-current="page"]::after{width:1.6rem}

.site-header.is-condensed .status-rail__inner{max-height:0;min-height:0;opacity:0}
.site-header.is-condensed .masthead__name{font-size:clamp(1.25rem,2vw,1.7rem)}
.site-header.is-condensed .masthead__bar{padding-block:0.55rem}

.scroll-meter{position:absolute;left:0;right:0;bottom:-1px;height:2px;pointer-events:none}
.scroll-meter__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
}

@media (max-width:900px){
  .masthead__bar{position:relative;display:flex;justify-content:center;padding-block:0.7rem}
  .masthead__edition,.masthead__tools{display:none}
  .nav-toggle{display:inline-flex;position:absolute;right:0;top:50%;transform:translateY(-50%)}
  .primary-nav{
    max-height:0;overflow:hidden;visibility:hidden;
    border-top:1px solid transparent;
    transition:max-height var(--dur) var(--ease),visibility var(--dur) var(--ease),border-color var(--dur) var(--ease);
  }
  .primary-nav[data-open]{
    max-height:min(70vh,520px);overflow-y:auto;visibility:visible;
    border-top-color:var(--line-dark);
  }
  .primary-nav__list{flex-direction:column;align-items:stretch;gap:0.2rem;padding:0.6rem 0}
  .primary-nav__link{padding:0.85rem 1rem;border-radius:var(--radius-md);font-size:1rem}
  .primary-nav__link::after{display:none}
  .primary-nav__link:hover{background:rgba(104,216,255,0.12)}
  .primary-nav__link[aria-current="page"]{
    background:rgba(255,107,44,0.14);
    box-shadow:inset 3px 0 0 var(--orange);
  }
}

@media (max-width:640px){
  .status-rail__inner{justify-content:center;min-height:30px;max-height:44px}
  .status-rail__meta{display:none}
  .status-rail__text{font-size:0.66rem}
  .masthead__tagline{font-size:0.58rem;letter-spacing:0.16em}
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;overflow:hidden;
  background:var(--ink);color:var(--silver);
  border-top:1px solid rgba(44,79,115,0.6);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--orange),var(--cyan) 45%,var(--green));
}
.footer__top{
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,0.8fr) minmax(0,1fr);
  gap:2.5rem;padding-block:clamp(2.4rem,5vw,4rem);
}
.footer__wordmark{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(1.6rem,3vw,2.3rem);line-height:1.05;
  letter-spacing:-0.03em;color:var(--white);
}
.footer__line{
  margin-top:0.5rem;font-family:var(--font-mono);font-size:0.72rem;
  font-weight:600;letter-spacing:0.16em;color:var(--cyan);
}
.footer__summary{margin-top:1rem;max-width:34ch;color:var(--mist);font-size:0.95rem;line-height:1.8}
.footer__cta{margin-top:1.5rem}
.footer__title{
  margin-bottom:1rem;font-family:var(--font-mono);
  font-size:0.68rem;font-weight:600;letter-spacing:0.2em;
  text-transform:uppercase;color:var(--mist);
}
.footer__list{display:grid;gap:0.55rem}
.footer__link{
  display:inline-block;font-size:0.94rem;color:var(--silver);
  transition:color var(--dur) var(--ease);
}
.footer__link:hover{color:var(--cyan)}
.footer__link[aria-current="page"]{color:var(--orange)}
.footer__contact-item{display:flex;flex-direction:column;gap:0.12rem}
.footer__contact-key{
  font-family:var(--font-mono);font-size:0.64rem;font-weight:600;
  letter-spacing:0.16em;text-transform:uppercase;color:var(--mist);
}
.footer__contact-value{font-size:0.92rem;color:var(--silver);word-break:break-word}
.footer__note{margin-top:1.1rem;font-size:0.8rem;line-height:1.7;color:var(--mist);max-width:38ch}
.footer__bottom{border-top:1px solid rgba(141,155,174,0.2);padding-block:1.15rem}
.footer__bottom-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:0.8rem 1.6rem;
}
.footer__legal{display:flex;flex-wrap:wrap;gap:0.4rem 1.3rem}
.footer__legal-link{
  font-size:0.82rem;color:var(--mist);
  transition:color var(--dur) var(--ease);
}
.footer__legal-link:hover{color:var(--cyan)}
.footer__legal-link[aria-current="page"]{color:var(--orange)}
.footer__meta{
  font-family:var(--font-mono);font-size:0.72rem;font-weight:500;
  letter-spacing:0.06em;color:var(--mist);
}

@media (max-width:960px){
  .footer__top{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:2.2rem}
  .footer__brand{grid-column:1 / -1}
}
@media (max-width:600px){
  .footer__top{grid-template-columns:minmax(0,1fr);gap:1.9rem}
  .footer__bottom-inner{flex-direction:column;align-items:flex-start}
}

/* ============ 减少动态偏好 ============ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:0.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:0.001ms!important;
  }
  .btn:hover,.panel:hover{transform:none}
  .media-frame::before{opacity:0.3}
}