/* ===========================================================
   竞博空间 · 共享样式表 /assets/site.css
   =========================================================== */

/* ---------- 0. 令牌 ---------- */
:root{
  --indigo-900:#0B1836;
  --indigo-700:#152A55;
  --indigo-500:#27457F;
  --orange-600:#D9581F;
  --orange-300:#F0A15C;
  --celadon-600:#2E7D6B;
  --celadon-200:#A9CFC4;
  --wine-700:#6B1F3A;
  --ledger:#EFE7DA;
  --paper:#FCF9F4;
  --graphite:#3D4552;
  --hair:#C9C2B6;

  --font-head:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shadow-card:0 1px 2px rgba(11,24,54,.06);
  --ease:cubic-bezier(.2,.7,.3,1);
  --shell:1240px;
  --radius:2px;
}

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd,fieldset{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}
hr{border:0;border-top:1px solid var(--hair);margin:0}

/* ---------- 2. 中文排版基座 ---------- */
body{
  background:var(--paper);
  color:var(--graphite);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,.font-head{
  font-family:var(--font-head);
  font-stretch:condensed;
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.18;
  color:var(--indigo-900);
}
h1{font-size:clamp(2.6rem,7vw,4.6rem);letter-spacing:-.02em}
h2{font-size:clamp(1.9rem,5vw,3.4rem)}
h3{font-size:1.35rem;font-weight:700}
h4{font-size:1.05rem;font-weight:700}
p{max-width:68ch}
a{color:var(--indigo-500)}
a:hover{color:var(--orange-600)}
strong{font-weight:700;color:var(--indigo-900)}
.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
  letter-spacing:-.01em;
}
:focus-visible{outline:2px solid var(--orange-600);outline-offset:2px}

/* ---------- 3. 布局工具 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:clamp(1rem,4vw,2.5rem);
}
.main{
  padding-block:clamp(1.6rem,4vw,3rem) clamp(3rem,7vw,5.5rem);
  background:var(--paper);
}
.main--flush{padding-top:0}
.section{
  padding-block:clamp(2.2rem,5vw,4rem);
  border-top:1px solid var(--hair);
}
.section:first-child{border-top:0}
.section__head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:1rem;
  flex-wrap:wrap;
  margin-bottom:clamp(1.2rem,3vw,2rem);
}
.section__title{
  font-family:var(--font-head);
  font-stretch:condensed;
  font-weight:800;
  font-size:clamp(1.9rem,5vw,3.4rem);
  letter-spacing:-.01em;
  line-height:1.04;
  color:var(--indigo-900);
}
.section__note{
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.12em;
  color:var(--indigo-500);
}
.eyebrow{
  display:inline-block;
  font-family:var(--font-head);
  font-size:.78rem;
  font-weight:700;
  letter-spacing:.2em;
  color:var(--wine-700);
  margin-bottom:.6rem;
}
.divider-hair{border-top:1px solid var(--hair);margin-block:clamp(1.6rem,4vw,2.6rem)}
.grid{display:grid;gap:clamp(1rem,2.4vw,1.75rem)}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.span-3{grid-column:span 3}
.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}
.prose{
  font-family:var(--font-body);
  font-size:1.0625rem;
  line-height:1.85;
  max-width:68ch;
  color:var(--graphite);
}
.prose p + p{margin-top:1.4em}
.prose h2,.prose h3{margin-top:1.8em;margin-bottom:.6em}
.prose ul,.prose ol{margin-top:1em;padding-left:1.2em;list-style:disc;max-width:68ch}
.prose li + li{margin-top:.4em}
.lede{
  font-size:clamp(1.05rem,1.6vw,1.2rem);
  line-height:1.75;
  max-width:62ch;
  color:var(--indigo-700);
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  font-family:var(--font-head);
  font-size:.92rem;
  font-weight:700;
  color:var(--indigo-500);
  border-bottom:1px solid var(--orange-300);
  padding-bottom:.1rem;
}
.link-more:hover{color:var(--orange-600);border-bottom-color:var(--orange-600)}

/* ---------- 4. 面包屑 ---------- */
.breadcrumbs{
  padding-block:1rem;
  font-family:var(--font-head);
  font-size:.78rem;
  letter-spacing:.1em;
  color:var(--indigo-500);
}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:.15rem}
.breadcrumbs__item{display:inline-flex;align-items:center}
.breadcrumbs__item::after{content:"/";margin-inline:.45rem;color:var(--hair)}
.breadcrumbs__item:last-child::after{content:"";margin:0}
.breadcrumbs__item:last-child{color:var(--graphite)}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.4rem;
  padding:.55rem 1rem;
  border:1px solid var(--indigo-500);
  border-radius:var(--radius);
  font-family:var(--font-head);
  font-size:.86rem;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.2;
  white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn--primary{background:var(--indigo-900);border-color:var(--indigo-900);color:var(--paper)}
.btn--primary:hover{background:var(--indigo-700);border-color:var(--indigo-700);color:var(--paper)}
.btn--ghost{background:transparent;border-color:var(--hair);color:var(--indigo-700)}
.btn--ghost:hover{border-color:var(--orange-600);color:var(--orange-600)}
.btn--quiet{background:var(--ledger);border-color:var(--hair);color:var(--indigo-700)}
.btn--quiet:hover{border-color:var(--orange-300);color:var(--orange-600)}

/* ---------- 6. 跳转链接 ---------- */
.skip-link{
  position:absolute;
  left:-9999px;
  top:0;
  z-index:200;
  padding:.7rem 1.1rem;
  background:var(--indigo-900);
  color:var(--paper);
  font-family:var(--font-head);
  font-size:.9rem;
  font-weight:700;
}
.skip-link:focus{left:0;color:var(--paper)}

/* ---------- 7. 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:var(--paper);
  border-bottom:1px solid var(--hair);
}
.ledger-bar{
  position:relative;
  background:var(--indigo-900);
  color:var(--paper);
}
.ledger-bar__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:.75rem;
  flex-wrap:wrap;
  padding-block:.45rem;
  font-family:var(--font-head);
  font-size:.76rem;
  font-weight:600;
  letter-spacing:.14em;
}
.ledger-bar__brand{color:var(--celadon-200)}
.ledger-bar__stat{color:var(--paper);display:inline-flex;align-items:center;gap:.45rem}
.ledger-bar__stat .num{color:var(--orange-300);font-weight:600}
.ledger-bar__dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--celadon-600);
  box-shadow:0 0 0 2px rgba(169,207,196,.35);
}
.scroll-progress{
  position:absolute;
  left:0;
  bottom:0;
  height:2px;
  width:0;
  background:var(--orange-600);
  transition:width .1s linear;
}
.masthead{overflow:hidden;max-height:220px;opacity:1;transition:max-height .28s var(--ease),opacity .2s var(--ease)}
.masthead__grid{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:1rem;
  padding-block:1.35rem;
}
.masthead__aside{
  font-family:var(--font-head);
  font-size:.76rem;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--indigo-500);
  max-width:none;
}
.masthead__aside span{display:block}
.masthead__aside span + span{color:var(--celadon-600);margin-top:.2rem}
.brand{display:block;text-align:center;color:var(--indigo-900)}
.brand:hover{color:var(--indigo-900)}
.brand__name{
  display:block;
  font-family:var(--font-head);
  font-stretch:condensed;
  font-weight:800;
  font-size:clamp(1.65rem,3.4vw,2.35rem);
  letter-spacing:.18em;
  line-height:1.1;
  text-indent:.18em;
}
.brand__tagline{
  display:block;
  margin-top:.35rem;
  font-family:var(--font-head);
  font-size:.76rem;
  font-weight:500;
  letter-spacing:.18em;
  color:var(--graphite);
}
.masthead__actions{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:.55rem;
}
.nav-toggle{
  display:none;
  align-items:center;
  gap:.5rem;
  padding:.5rem .7rem;
  border:1px solid var(--hair);
  border-radius:var(--radius);
  font-family:var(--font-head);
  font-size:.8rem;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--indigo-700);
}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:3px;width:16px}
.nav-toggle__bars i{display:block;height:2px;background:currentColor;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"]{border-color:var(--orange-600);color:var(--orange-600)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.site-nav{background:var(--ledger);border-top:1px solid var(--hair);border-bottom:1px solid var(--hair)}
.site-nav__inner{display:block}
.nav__list{display:flex;justify-content:center;flex-wrap:wrap;align-items:stretch}
.nav__link{
  display:block;
  padding:.95rem clamp(.7rem,1.7vw,1.4rem);
  font-family:var(--font-head);
  font-size:.92rem;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--indigo-700);
  border-bottom:2px solid transparent;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.nav__link:hover{color:var(--orange-600);border-bottom-color:var(--orange-300);background:rgba(252,249,244,.7)}
.nav__link[aria-current="page"]{color:var(--indigo-900);background:var(--paper);border-bottom-color:var(--orange-600)}
.site-header[data-condensed="true"] .masthead{max-height:0;opacity:0}
.site-header[data-condensed="true"] .site-nav{border-top:0}

/* ---------- 8. 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--ledger);
  color:var(--graphite);
  padding-block:clamp(2.4rem,5vw,3.6rem) 1.4rem;
  border-top:1px solid var(--hair);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:3px;
  background:linear-gradient(90deg,var(--indigo-900) 0 46%,var(--orange-600) 46% 72%,var(--celadon-600) 72% 100%);
}
.footer__grid{
  display:grid;
  grid-template-columns:1.6fr .85fr .85fr .95fr 1.35fr;
  gap:clamp(1.2rem,3vw,2.4rem);
}
.footer__brand{
  font-family:var(--font-head);
  font-stretch:condensed;
  font-weight:800;
  font-size:1.5rem;
  letter-spacing:.16em;
  color:var(--indigo-900);
  max-width:none;
}
.footer__closing{
  margin-top:.6rem;
  font-family:var(--font-body);
  font-size:.92rem;
  line-height:1.75;
  max-width:32ch;
  color:var(--graphite);
}
.footer__meta{
  margin-top:.75rem;
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.04em;
  color:var(--celadon-600);
  max-width:none;
}
.footer__title{
  padding-bottom:.55rem;
  margin-bottom:.85rem;
  border-bottom:1px solid var(--hair);
  font-size:.78rem;
  font-weight:700;
  letter-spacing:.2em;
  color:var(--indigo-700);
}
.footer__list{display:grid;gap:.5rem;font-size:.92rem}
.footer__link{
  color:var(--graphite);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer__link:hover{color:var(--orange-600);border-bottom-color:var(--orange-300)}
.footer__list--contact{font-size:.88rem;line-height:1.7;gap:.45rem;color:var(--graphite)}
.footer__list--contact .num{color:var(--indigo-700)}
.footer__bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:.8rem;
  flex-wrap:wrap;
  margin-top:clamp(1.6rem,4vw,2.6rem);
  padding-top:1rem;
  border-top:1px solid var(--hair);
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.06em;
  color:var(--indigo-500);
}
.footer__icp,.footer__copy{max-width:none}

/* ---------- 9. 数据卡 / 指标带 ---------- */
.data-card{
  position:relative;
  padding:1.5rem 1.15rem 1.25rem;
  background:var(--paper);
  border:1px solid var(--hair);
  box-shadow:var(--shadow-card);
}
.data-card::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:3px;
  background:var(--card-band,var(--indigo-500));
}
.data-card::after{
  content:"";
  position:absolute;
  top:3px;
  left:0;
  width:14px;
  height:14px;
  background:linear-gradient(225deg,transparent 0 47%,var(--hair) 47% 53%,var(--ledger) 53% 100%);
}
.data-card__label{
  display:block;
  font-family:var(--font-head);
  font-size:.78rem;
  font-weight:700;
  letter-spacing:.18em;
  color:var(--indigo-500);
}
.data-card__value{
  display:inline-block;
  margin-top:.55rem;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-weight:600;
  font-size:clamp(1.9rem,4.5vw,2.6rem);
  line-height:1.05;
  letter-spacing:-.02em;
  color:var(--orange-600);
}
.data-card__unit{
  margin-left:.3rem;
  font-family:var(--font-body);
  font-size:.85rem;
  font-weight:400;
  color:var(--graphite);
  opacity:.85;
}
.data-card__note{
  margin-top:.6rem;
  font-size:.78rem;
  line-height:1.65;
  color:var(--graphite);
  opacity:.85;
  max-width:34ch;
}
.data-card--indigo{background:var(--indigo-900);border-color:var(--indigo-700)}
.data-card--indigo .data-card__label{color:var(--celadon-200)}
.data-card--indigo .data-card__value{color:var(--orange-300)}
.data-card--indigo .data-card__unit,.data-card--indigo .data-card__note{color:var(--paper);opacity:.78}
.data-card--indigo::after{background:linear-gradient(225deg,transparent 0 47%,var(--indigo-700) 47% 53%,var(--indigo-900) 53% 100%)}
.stat-row{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(170px,1fr));
  gap:1px;
  background:var(--hair);
  border:1px solid var(--hair);
}
.stat{background:var(--paper);padding:1.05rem 1.15rem 1.15rem}
.stat__label{
  display:block;
  font-family:var(--font-head);
  font-size:.75rem;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--indigo-500);
}
.stat__value{
  display:block;
  margin-top:.4rem;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-weight:600;
  font-size:1.9rem;
  line-height:1.1;
  color:var(--orange-600);
}
.stat__unit{font-family:var(--font-body);font-size:.8rem;color:var(--graphite);margin-left:.25rem;opacity:.85}
.stat__note{display:block;margin-top:.35rem;font-size:.75rem;line-height:1.6;color:var(--graphite);opacity:.8}
.stat--grade .stat__value{color:var(--celadon-600)}

/* ---------- 10. 表格 ---------- */
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--hair);
  background:var(--paper);
  -webkit-overflow-scrolling:touch;
}
.ledger-table{min-width:640px;font-size:.92rem}
.ledger-table thead th{
  background:var(--indigo-700);
  color:var(--paper);
  text-align:left;
  padding:.8rem 1rem;
  font-family:var(--font-head);
  font-size:.75rem;
  font-weight:700;
  letter-spacing:.16em;
  white-space:nowrap;
}
.ledger-table tbody tr{height:52px;transition:background-color .16s var(--ease),box-shadow .16s var(--ease)}
.ledger-table tbody tr:nth-child(even){background:var(--ledger)}
.ledger-table tbody tr:hover{background:#fff;box-shadow:inset 3px 0 0 var(--orange-600)}
.ledger-table tbody td{
  padding:.7rem 1rem;
  border-top:1px solid var(--hair);
  vertical-align:middle;
}
.ledger-table .is-price,.ledger-table td[data-num]{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  color:var(--orange-600);
  font-weight:600;
}
.ledger-table .is-grade{color:var(--celadon-600);font-weight:700}
.ledger-table caption{
  caption-side:top;
  padding:.7rem 1rem;
  text-align:left;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.1em;
  color:var(--indigo-500);
}

/* ---------- 11. 标签 / 徽标 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:.3rem;
  padding:.2rem .55rem;
  border:1px solid var(--hair);
  border-radius:var(--radius);
  background:var(--ledger);
  font-family:var(--font-head);
  font-size:.76rem;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--indigo-700);
  white-space:nowrap;
}
.tag--price{background:#FBE7DA;border-color:var(--orange-300);color:var(--orange-600);font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.tag--grade{background:var(--celadon-200);border-color:var(--celadon-600);color:#1D5A4C}
.tag--wine{background:#F3E4EA;border-color:var(--wine-700);color:var(--wine-700)}
.tag--indigo{background:var(--indigo-700);border-color:var(--indigo-700);color:var(--paper)}
.grade-badge{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.25rem .6rem;
  border:1px solid var(--celadon-600);
  border-radius:var(--radius);
  background:var(--celadon-200);
  font-family:var(--font-head);
  font-size:.76rem;
  font-weight:700;
  letter-spacing:.08em;
  color:#1D5A4C;
}
.grade-badge::after{
  content:"";
  position:absolute;
  inset:-1px;
  border:1px solid var(--celadon-600);
  clip-path:inset(0 100% 0 0);
  animation:gradeSweep .4s var(--ease) .1s both;
  pointer-events:none;
}
@keyframes gradeSweep{
  from{clip-path:inset(0 100% 0 0)}
  to{clip-path:inset(0 0 0 0)}
}
.tag-row{display:flex;flex-wrap:wrap;gap:.4rem}

/* ---------- 12. 横向索引签条 ---------- */
.index-band{
  position:relative;
  overflow:hidden;
  background:var(--ledger);
  border-block:1px solid var(--hair);
}
.index-band::after{
  content:"";
  position:absolute;
  inset:0 0 0 auto;
  width:64px;
  background:linear-gradient(90deg,rgba(239,231,218,0),var(--ledger));
  pointer-events:none;
}
.index-band__track{
  display:flex;
  overflow-x:auto;
  scroll-snap-type:x proximity;
  -webkit-overflow-scrolling:touch;
}
.index-band__item{
  flex:0 0 auto;
  min-width:210px;
  padding:1rem 1.25rem;
  border-right:1px solid var(--hair);
  scroll-snap-align:start;
}
.index-band__item:last-child{border-right:0}
.index-band__name{
  font-family:var(--font-head);
  font-size:.92rem;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--indigo-900);
}
.index-band__price{
  display:block;
  margin-top:.35rem;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:1.05rem;
  color:var(--orange-600);
}
.index-band__price span{font-family:var(--font-body);font-size:.75rem;color:var(--graphite);margin-left:.25rem}
.index-band__grade{
  display:inline-flex;
  align-items:center;
  gap:.3rem;
  margin-top:.4rem;
  font-family:var(--font-head);
  font-size:.72rem;
  letter-spacing:.1em;
  color:var(--celadon-600);
}
.index-band__grade::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--celadon-600)}

/* ---------- 13. 观察报告列表 ---------- */
.report-list{border-top:1px solid var(--hair)}
.report-item{
  position:relative;
  display:grid;
  grid-template-columns:9rem minmax(0,1fr) auto;
  align-items:baseline;
  gap:1rem;
  padding:1.05rem 0 1.05rem 1.1rem;
  border-bottom:1px solid var(--hair);
  transition:background-color .18s var(--ease);
}
.report-item::before{
  content:"";
  position:absolute;
  left:0;
  top:1.15rem;
  bottom:1.15rem;
  width:3px;
  background:var(--wine-700);
}
.report-item:hover{background:var(--ledger)}
.report-item__time{
  font-family:var(--font-mono);
  font-size:.76rem;
  letter-spacing:.06em;
  color:var(--wine-700);
}
.report-item__title{
  font-family:var(--font-head);
  font-size:1.05rem;
  font-weight:700;
  color:var(--indigo-900);
  max-width:52ch;
}
.report-item__tag{flex:0 0 auto}

/* ---------- 14. 筛选签 ---------- */
.chip-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5rem;
  padding-block:.5rem;
}
.chip{
  padding:.35rem .8rem;
  border:1px solid var(--hair);
  border-radius:var(--radius);
  background:var(--paper);
  font-family:var(--font-head);
  font-size:.85rem;
  font-weight:600;
  color:var(--indigo-700);
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.chip:hover{border-color:var(--orange-300);color:var(--orange-600)}
.chip[aria-pressed="true"]{background:var(--indigo-900);border-color:var(--indigo-900);color:var(--paper)}

/* ---------- 15. 展开组 ---------- */
.accordion{border-top:1px solid var(--hair)}
.accordion__item{border-bottom:1px solid var(--hair)}
.accordion__trigger{
  display:flex;
  width:100%;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:1.1rem 0;
  text-align:left;
  font-family:var(--font-head);
  font-size:1.05rem;
  font-weight:700;
  color:var(--indigo-900);
  transition:color .18s var(--ease);
}
.accordion__trigger:hover{color:var(--orange-600)}
.accordion__icon{
  position:relative;
  flex:0 0 auto;
  width:14px;
  height:14px;
  color:var(--orange-600);
}
.accordion__icon::before,.accordion__icon::after{
  content:"";
  position:absolute;
  background:currentColor;
  transition:transform .2s var(--ease);
}
.accordion__icon::before{left:0;right:0;top:6px;height:2px}
.accordion__icon::after{top:0;bottom:0;left:6px;width:2px}
.accordion__trigger[aria-expanded="true"] .accordion__icon::after{transform:scaleY(0)}
.accordion__panel{height:0;overflow:hidden;transition:height .28s var(--ease)}
.accordion__panel-inner{
  padding-bottom:1.3rem;
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.85;
  max-width:68ch;
  color:var(--graphite);
}
.accordion__panel-inner p + p{margin-top:1.1em}

/* ---------- 16. 图片容器（页面阶段放图） ---------- */
.figure{
  display:block;
  margin:0;
  border:1px solid var(--hair);
  background:var(--ledger);
}
.figure__frame{
  position:relative;
  aspect-ratio:4 / 3;
  overflow:hidden;
  background:
    repeating-linear-gradient(135deg,rgba(201,194,182,.4) 0 10px,transparent 10px 20px),
    var(--ledger);
}
.figure--wide .figure__frame{aspect-ratio:16 / 9}
.figure--square .figure__frame{aspect-ratio:1 / 1}
.figure--tall .figure__frame{aspect-ratio:3 / 4}
.figure__frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.94) contrast(1.03);
}
.figure__caption{
  padding:.6rem .8rem;
  border-top:1px solid var(--hair);
  background:var(--paper);
  font-size:.78rem;
  line-height:1.7;
  color:var(--graphite);
}

/* ---------- 17. 进入视口 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 18. 响应式 ---------- */
@media (max-width:1366px){
  .footer__grid{grid-template-columns:1.5fr .9fr .9fr .9fr 1.2fr}
}
@media (max-width:1080px){
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .span-3,.span-4{grid-column:span 3}
  .span-5,.span-6,.span-7,.span-8,.span-12{grid-column:span 6}
  .footer__grid{grid-template-columns:1fr 1fr 1fr;row-gap:2rem}
  .footer__col--brand{grid-column:1 / -1}
}
@media (max-width:900px){
  .site-header[data-condensed="true"] .masthead{max-height:220px;opacity:1}
  .masthead__grid{grid-template-columns:minmax(0,1fr) auto;padding-block:1rem;gap:.75rem}
  .masthead__aside{display:none}
  .brand{text-align:left}
  .brand__name{font-size:1.5rem}
  .brand__tagline{letter-spacing:.1em}
  .nav-toggle{display:inline-flex}
  .btn--ghost{display:none}
  .site-nav{
    display:grid;
    grid-template-rows:0fr;
    border-top:1px solid var(--hair);
    background:var(--paper);
    transition:grid-template-rows .28s var(--ease);
  }
  .site-nav[data-open="true"]{grid-template-rows:1fr}
  .site-nav__inner{min-height:0;overflow:hidden;visibility:hidden;transition:visibility .28s var(--ease)}
  .site-nav[data-open="true"] .site-nav__inner{visibility:visible}
  .nav__list{flex-direction:column;align-items:stretch}
  .nav__link{
    padding:.9rem 1rem;
    border-bottom:1px solid var(--hair);
    border-left:3px solid transparent;
  }
  .nav__link:hover{background:var(--ledger);border-bottom-color:var(--hair)}
  .nav__link[aria-current="page"]{border-left-color:var(--orange-600);border-bottom-color:var(--hair)}
  .report-item{grid-template-columns:minmax(0,1fr);gap:.35rem;padding-left:1rem}
  .report-item::before{top:.95rem;bottom:.95rem}
  .chip-row{
    flex-wrap:nowrap;
    overflow-x:auto;
    padding-bottom:.8rem;
    -webkit-overflow-scrolling:touch;
  }
  .footer__grid{grid-template-columns:1fr 1fr}
  .footer__col--brand{grid-column:1 / -1}
}
@media (max-width:768px){
  body{font-size:16px}
  .main{padding-block:1.2rem 3.5rem}
  .footer__bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:640px){
  .grid--12{grid-template-columns:minmax(0,1fr)}
  .span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-12{grid-column:1 / -1}
  .stat-row{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
}
@media (max-width:480px){
  .btn--primary{display:none}
  .ledger-bar__inner{font-size:.7rem;letter-spacing:.08em}
  .section__title{font-size:1.75rem}
  h1{font-size:2.4rem}
  .data-card{padding:1.35rem 1rem 1.1rem}
}

/* ---------- 19. 降级动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1;transform:none}
  .scroll-progress{transition:none}
}