/* =========================================================
   新宝体育 · 共享样式 /assets/site.css
   复古出版色体系 · 纵向档案长卷
   ========================================================= */

/* ---------- 1. 设计变量 ---------- */
:root{
  /* 色板 */
  --paper:#F4EFE3;
  --sand:#E8DCB8;
  --forest:#10312B;
  --moss:#2F5D4E;
  --night:#0E1B2A;
  --amber:#C9A227;
  --brick:#A63A2A;
  --ink:#1B1712;
  --muted:#6E6A5E;
  --rule:rgba(27,23,18,.14);
  --rule-strong:rgba(27,23,18,.3);
  --rule-light:rgba(244,239,227,.24);
  --on-dark:rgba(244,239,227,.88);
  --on-dark-soft:rgba(244,239,227,.6);
  /* 字体 */
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,"Times New Roman",serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-data:"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Noto Sans SC",monospace;
  /* 度量 */
  --wrap:1280px;
  --gutter:24px;
  --s1:40px;
  --s2:80px;
  --s3:140px;
  --shadow-1:0 2px 4px rgba(27,23,18,.09);
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- 2. Reset 与中文排版基线 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:96px;
}
body{
  margin:0;
  background-color:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  font-weight:400;
  line-height:1.8;
  letter-spacing:.01em;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.15;
  margin:0 0 .6em;
  color:var(--ink);
  text-wrap:pretty;
}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
img,svg,video{display:block;max-width:100%;height:auto}
figure{margin:0}
button{font:inherit;color:inherit}
a{color:inherit}
ul,ol{margin:0;padding:0}
table{border-collapse:collapse;width:100%}
::selection{background-color:var(--amber);color:var(--ink)}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px}

/* 跳转链接 */
.skip-link{
  position:absolute;
  left:-9999px;
  top:0;
  z-index:120;
  padding:12px 18px;
  background-color:var(--amber);
  color:var(--ink);
  font-size:14px;
  letter-spacing:.08em;
  text-decoration:none;
}
.skip-link:focus{left:12px;top:12px}

main{display:block}

/* ---------- 3. 容器与网格 ---------- */
.u-wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gutter);
}
.grid__main{grid-column:1 / -1;min-width:0}
.grid__aside{grid-column:1 / -1;min-width:0}
@media (min-width:900px){
  .grid__main{grid-column:1 / span 8}
  .grid__aside{grid-column:10 / span 3;align-self:start}
}

/* ---------- 4. 文字层级与编辑部件 ---------- */
.eyebrow{
  display:block;
  margin:0 0 14px;
  font-family:var(--font-data);
  font-size:12px;
  line-height:1.5;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--amber);
}
.eyebrow--brick{color:var(--brick)}
.section-title{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(26px,3.4vw,44px);
  line-height:1.12;
  letter-spacing:.01em;
  margin:0 0 .5em;
}
.lede{
  max-width:60ch;
  margin:0 0 1em;
  font-size:clamp(19px,1.6vw,22px);
  line-height:1.7;
  color:var(--ink);
}
.prose{max-width:68ch;font-size:17px;line-height:1.85}
.prose p{margin:0 0 1.15em}
.prose ul,.prose ol{margin:0 0 1.15em;padding-left:1.3em}
.prose li{margin-bottom:.4em}
.prose a{
  color:var(--ink);
  text-decoration:none;
  border-bottom:1px solid var(--amber);
  transition:background-color .2s var(--ease);
}
.prose a:hover{background-color:rgba(201,162,39,.18)}
.text-link{
  position:relative;
  display:inline-block;
  color:var(--ink);
  text-decoration:none;
}
.text-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-2px;
  width:100%;
  height:1px;
  background-color:var(--amber);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.text-link:hover::after,
.text-link:focus-visible::after{transform:scaleX(1)}
.arch-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 9px;
  border:1px solid var(--rule-strong);
  background-color:var(--sand);
  color:var(--ink);
  font-family:var(--font-data);
  font-size:11px;
  line-height:1;
  letter-spacing:.14em;
  text-transform:uppercase;
}
.arch-tag--dark{
  border-color:rgba(201,162,39,.55);
  background-color:rgba(244,239,227,.05);
  color:var(--amber);
}
.on-dark{color:var(--paper)}

/* ---------- 5. 章节色带 ---------- */
.section-band{
  padding:var(--s1) 0;
  background-color:var(--forest);
  background-image:repeating-linear-gradient(0deg,rgba(244,239,227,.03) 0 1px,transparent 1px 5px);
  border-top:1px solid var(--amber);
  color:var(--paper);
}
.section-band--night{
  background-color:var(--night);
  border-top-color:rgba(201,162,39,.6);
}
.section-band .section-title,
.section-band h1,
.section-band h2,
.section-band h3{color:var(--paper)}
.section-band .lede,
.section-band .prose,
.section-band p{color:var(--on-dark)}
.section-band .eyebrow{color:var(--amber)}
.section-band .text-link{color:var(--paper)}
.section-band .rule-line{background-color:var(--rule-light)}
.section-band .mirror-note{color:var(--on-dark-soft)}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 22px;
  border:1px solid var(--ink);
  background-color:transparent;
  color:var(--ink);
  font-family:var(--font-body);
  font-size:14px;
  letter-spacing:.1em;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn--primary{
  background-color:var(--forest);
  border-color:var(--forest);
  color:var(--paper);
}
.btn--primary:hover,
.btn--primary:focus-visible{
  background-color:var(--moss);
  border-color:var(--amber);
  color:var(--paper);
}
.btn--ghost{
  background-color:transparent;
  border-color:currentColor;
  color:inherit;
}
.btn--ghost:hover,
.btn--ghost:focus-visible{
  background-color:var(--amber);
  border-color:var(--amber);
  color:var(--ink);
}

/* ---------- 7. 面包屑、旁注与细线 ---------- */
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0 0 20px;
  padding:0;
  list-style:none;
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--muted);
}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs__item::after{content:"/";color:var(--rule-strong)}
.breadcrumbs__item:last-child::after{content:""}
.breadcrumbs__link{
  color:var(--muted);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.breadcrumbs__link:hover,
.breadcrumbs__link:focus-visible{color:var(--brick);border-bottom-color:var(--brick)}
.aside-note{
  padding-top:14px;
  border-top:1px solid var(--rule-strong);
  font-size:13px;
  line-height:1.75;
  color:var(--muted);
}
.aside-note__title{
  margin:0 0 8px;
  font-family:var(--font-display);
  font-size:14px;
  letter-spacing:.06em;
  color:var(--ink);
}
.section-band .aside-note{border-top-color:var(--rule-light);color:var(--on-dark-soft)}
.section-band .aside-note__title{color:var(--paper)}
.mirror-note{
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted);
}
.rule-line{
  height:1px;
  margin:var(--s1) 0;
  border:0;
  background-color:var(--rule);
}

/* ---------- 8. 图像容器（页面阶段放图） ---------- */
.media-frame{
  padding:10px;
  border:1px solid var(--rule-strong);
  background-color:var(--sand);
  box-shadow:var(--shadow-1);
}
.media-frame__img{
  display:block;
  width:100%;
  aspect-ratio:16 / 10;
  object-fit:cover;
  background-color:var(--forest);
  background-image:linear-gradient(140deg,var(--forest) 0%,var(--night) 100%);
  filter:grayscale(1) contrast(1.05);
}
.media-frame__caption{
  display:flex;
  flex-wrap:wrap;
  gap:6px 14px;
  justify-content:space-between;
  margin-top:10px;
  font-family:var(--font-data);
  font-size:11px;
  line-height:1.6;
  letter-spacing:.08em;
  color:var(--muted);
}
.media-frame__tag{color:var(--brick)}
.media-frame--portrait .media-frame__img{aspect-ratio:3 / 4}
.media-frame--wide .media-frame__img{aspect-ratio:21 / 9}
.media-frame--dark{
  border-color:rgba(201,162,39,.45);
  background-color:rgba(244,239,227,.05);
  box-shadow:none;
}
.media-frame--dark .media-frame__caption{color:var(--on-dark-soft)}
.media-frame--dark .media-frame__tag{color:var(--amber)}

/* ---------- 9. 页头 ---------- */
.site-header{
  position:relative;
  z-index:60;
  background-color:var(--forest);
  background-image:
    repeating-linear-gradient(0deg,rgba(244,239,227,.028) 0 1px,transparent 1px 4px),
    linear-gradient(180deg,rgba(16,49,43,1) 0%,rgba(14,27,42,1) 100%);
  border-bottom:1px solid var(--amber);
  color:var(--paper);
}

/* 9.1 顶部信息带 */
.header-band{border-bottom:1px solid var(--rule-light)}
.header-band__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:6px 24px;
  padding:10px 0;
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.08em;
}
.header-band__left{
  display:flex;
  flex-wrap:wrap;
  gap:6px 18px;
  margin:0;
}
.header-band__icp{color:var(--sand)}
.header-band__note{color:var(--on-dark-soft)}
.header-band__links{display:flex;flex-wrap:wrap;gap:18px}
.band-link{
  padding-bottom:2px;
  color:var(--sand);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.band-link:hover,
.band-link:focus-visible{color:var(--amber);border-bottom-color:var(--amber)}

/* 9.2 居中刊头 */
.masthead{padding:34px 0 30px;border-bottom:1px solid var(--rule-light)}
.masthead__inner{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:end;
  gap:24px;
}
.masthead__side{
  display:flex;
  flex-direction:column;
  gap:5px;
  min-width:0;
}
.masthead__side--end{align-items:flex-end;text-align:right}
.masthead__meta-label{
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.16em;
  color:rgba(232,220,184,.62);
}
.masthead__meta-value{
  font-family:var(--font-data);
  font-size:13px;
  letter-spacing:.06em;
  color:var(--amber);
  white-space:nowrap;
}
.masthead__brand{text-align:center}
.masthead__brand-link{
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:var(--paper);
}
.masthead__brand-cn{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(40px,7vw,96px);
  line-height:.95;
  letter-spacing:.06em;
  text-wrap:balance;
}
.masthead__brand-en{
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.34em;
  color:var(--sand);
  opacity:.82;
}

/* 9.3 栏目导航 */
.nav-bar{position:relative;border-top:1px solid var(--rule-light)}
.nav-bar__inner{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;
  gap:16px;
  padding:12px 0;
}
.primary-nav{grid-column:2;justify-self:center}
.primary-nav__list{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:2px 30px;
  list-style:none;
}
.primary-nav__item{display:block}
.primary-nav__link{
  position:relative;
  display:inline-block;
  padding:6px 2px;
  color:var(--sand);
  text-decoration:none;
  font-size:15px;
  letter-spacing:.06em;
  transition:color .2s var(--ease);
}
.primary-nav__link::after{
  content:"";
  position:absolute;
  left:0;
  right:100%;
  bottom:0;
  height:1px;
  background-color:var(--amber);
  transition:right .24s var(--ease);
}
.primary-nav__link:hover,
.primary-nav__link:focus-visible{color:var(--paper)}
.primary-nav__link:hover::after,
.primary-nav__link:focus-visible::after{right:0}
.primary-nav__link[aria-current="page"]{color:var(--paper)}
.primary-nav__link[aria-current="page"]::after{right:0;height:2px}
.nav-bar__cta{grid-column:3;justify-self:end;color:var(--sand);padding:9px 16px;font-size:13px}

/* 9.4 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:9px 14px;
  border:1px solid var(--rule-light);
  background-color:transparent;
  color:var(--sand);
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.14em;
  cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover,
.nav-toggle:focus-visible{border-color:var(--amber);color:var(--amber)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:1px;background-color:currentColor;transition:transform .2s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child{transform:translateY(-5px) rotate(-45deg)}
.nav-toggle[aria-expanded="true"]{border-color:var(--amber);color:var(--amber)}

/* 9.5 阅读进度条 */
.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:3px;
  z-index:90;
  background-color:rgba(14,27,42,.32);
  pointer-events:none;
}
.scroll-progress__bar{
  display:block;
  height:100%;
  width:100%;
  background-image:linear-gradient(90deg,var(--amber) 0%,var(--brick) 100%);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .12s linear;
}

/* ---------- 10. 页脚 ---------- */
.site-footer{
  background-color:var(--night);
  background-image:repeating-linear-gradient(0deg,rgba(244,239,227,.022) 0 1px,transparent 1px 5px);
  border-top:1px solid var(--amber);
  color:var(--paper);
}
.footer-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:36px;
  padding:64px 0 44px;
}
.footer-col{min-width:0}
.footer-col--brand{grid-column:1 / -1}
.footer-brand{
  display:inline-block;
  font-family:var(--font-display);
  font-weight:800;
  font-size:24px;
  letter-spacing:.08em;
  color:var(--paper);
  text-decoration:none;
  transition:color .2s var(--ease);
}
.footer-brand:hover,
.footer-brand:focus-visible{color:var(--amber)}
.footer-brand__desc{
  margin:12px 0 0;
  max-width:34ch;
  font-size:13px;
  line-height:1.75;
  color:var(--on-dark-soft);
}
.footer-arch{
  margin:14px 0 0;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--amber);
}
.footer-col__title{
  margin:0 0 16px;
  font-family:var(--font-display);
  font-weight:700;
  font-size:15px;
  letter-spacing:.1em;
  color:var(--sand);
}
.footer-list{
  display:flex;
  flex-direction:column;
  gap:10px;
  list-style:none;
}
.footer-list__item{font-size:14px;line-height:1.6}
.footer-list--numbered{counter-reset:footer-list}
.footer-list--numbered .footer-list__item{
  display:flex;
  gap:10px;
  align-items:baseline;
  counter-increment:footer-list;
}
.footer-list--numbered .footer-list__item::before{
  content:counter(footer-list,decimal-leading-zero);
  flex:0 0 auto;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--amber);
}
.footer-link{
  color:var(--on-dark);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-link:hover,
.footer-link:focus-visible{color:var(--paper);border-bottom-color:var(--amber)}
.footer-contact{
  display:flex;
  flex-direction:column;
  gap:12px;
  list-style:none;
  font-size:13px;
  line-height:1.7;
}
.footer-contact__row{display:flex;gap:10px;align-items:flex-start}
.footer-contact__label{
  flex:0 0 auto;
  padding-top:2px;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--amber);
}
.footer-contact__value{color:var(--on-dark);word-break:break-word}
.footer-note{
  margin:14px 0 0;
  font-size:12px;
  line-height:1.7;
  color:var(--on-dark-soft);
}
.footer-bottom{border-top:1px solid var(--rule-light)}
.footer-bottom__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  padding:18px 0;
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--on-dark-soft);
}
.footer-bottom__inner .footer-note{margin:0}
.footer-legal,.footer-copy{margin:0}

/* ---------- 11. 交互部件 ---------- */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0 0 26px;
}
.filter-tab{
  appearance:none;
  padding:7px 12px;
  border:1px solid var(--rule-strong);
  background-color:transparent;
  color:var(--muted);
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.1em;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.filter-tab:hover{border-color:var(--ink);color:var(--ink)}
.filter-tab[aria-pressed="true"]{
  background-color:var(--forest);
  border-color:var(--forest);
  color:var(--paper);
}
.filter-count{
  margin-left:auto;
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--muted);
}
.section-band .filter-tab{color:var(--on-dark-soft);border-color:var(--rule-light)}
.section-band .filter-tab:hover{color:var(--paper);border-color:var(--paper)}
.section-band .filter-tab[aria-pressed="true"]{
  background-color:var(--amber);
  border-color:var(--amber);
  color:var(--ink);
}
.section-band .filter-count{color:var(--on-dark-soft)}
.is-hidden{display:none !important}
.reveal-armed{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .45s var(--ease),transform .45s var(--ease);
}
.reveal-armed.is-in{opacity:1;transform:none}

/* ---------- 12. 响应式 ---------- */
@media (min-width:1000px){
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr 1.5fr;gap:40px;padding:80px 0 56px}
  .footer-col--brand{grid-column:auto}
}
@media (max-width:1100px){
  .nav-bar__cta{font-size:12px;padding:8px 12px}
}
@media (max-width:900px){
  html{scroll-padding-top:24px}
  .nav-bar__inner{
    grid-template-columns:auto minmax(0,1fr);
    justify-content:space-between;
    padding:10px 0;
  }
  .nav-toggle{display:inline-flex;grid-column:1;justify-self:start}
  .nav-bar__cta{
    grid-column:2;
    justify-self:end;
    display:inline-flex;
    padding:8px 12px;
    font-size:12px;
  }
  .primary-nav{
    display:none;
    position:absolute;
    left:0;
    right:0;
    top:100%;
    z-index:70;
    max-height:72vh;
    overflow-y:auto;
    padding:6px 0 14px;
    background-color:var(--night);
    border-top:1px solid var(--rule-light);
    border-bottom:1px solid var(--amber);
  }
  .primary-nav[data-open]{display:block}
  .primary-nav__list{
    flex-direction:column;
    gap:0;
    padding:0 var(--gutter);
  }
  .primary-nav__item{border-bottom:1px solid var(--rule-light)}
  .primary-nav__item:last-child{border-bottom:0}
  .primary-nav__link{
    display:block;
    padding:15px 2px 15px 18px;
    font-size:16px;
  }
  .primary-nav__link::after{display:none}
  .primary-nav__link::before{
    content:"";
    position:absolute;
    left:0;
    top:50%;
    width:8px;
    height:2px;
    background-color:transparent;
    transform:translateY(-50%);
  }
  .primary-nav__link[aria-current="page"]{color:var(--amber)}
  .primary-nav__link[aria-current="page"]::before{background-color:var(--amber)}
}
@media (max-width:760px){
  body{font-size:16px}
  .masthead{padding:22px 0 18px}
  .masthead__inner{
    grid-template-columns:minmax(0,1fr);
    justify-items:center;
    gap:14px;
  }
  .masthead__brand{order:1}
  .masthead__side{order:2;align-items:center;text-align:center}
  .masthead__side--end{order:3;align-items:center;text-align:center}
  .masthead__meta-value{white-space:normal}
  .header-band__inner{justify-content:flex-start}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:30px;padding:48px 0 36px}
  .footer-bottom__inner{flex-direction:column;align-items:flex-start;gap:6px}
  .filter-count{margin-left:0;width:100%}
}
@media (max-width:520px){
  .masthead__brand-cn{letter-spacing:.04em}
  .footer-list__item{font-size:13px}
}

/* ---------- 13. 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal-armed{opacity:1;transform:none}
  .primary-nav__link::after{transition:none}
  .scroll-progress__bar{transition:none}
}