/* ==========================================================================
   BSPORTS 看台 — 共享站点样式 /assets/site.css
   看台剖面蓝图 · 悬浮胶囊导航 · 珠宝色分区 · 粗野主义块面
   ========================================================================== */

:root{
  --grass:#1F7A4D;
  --grass-deep:#0E4A2F;
  --sky:#1E88C7;
  --sky-soft:#DCEEF8;
  --orange:#F26B1D;
  --orange-soft:#FFE3D1;
  --teal:#0B3B3C;
  --wine:#6E1E3A;
  --indigo:#3A2A6B;
  --ink:#1A1D1F;
  --cream:#F7F3EA;
  --mist:#D8D4C8;
  --grid-line:rgba(31,122,77,.08);
  --hard:6px 6px 0 rgba(11,59,60,.92);
  --hard-sm:4px 4px 0 rgba(11,59,60,.92);
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --gutter:20px;
  --pill:999px;
}

@media (min-width:768px){ :root{ --gutter:32px; } }
@media (min-width:1200px){ :root{ --gutter:48px; } }

/* ---------- reset ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; overflow-x:clip; }
body,h1,h2,h3,h4,h5,p,ul,ol,dl,dd,figure,blockquote{ margin:0; }
ul,ol{ padding:0; list-style:none; }
button{ font:inherit; color:inherit; }
a{ color:inherit; text-decoration:none; }
img,svg{ display:block; max-width:100%; }
main{ display:block; }

/* ---------- base ---------- */
body{
  background-color:var(--cream);
  background-image:linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);
  background-size:96px 100%;
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
@media (max-width:767px){ body{ background-size:64px 100%; } }

h1,h2,h3{ font-family:var(--font-display); font-weight:900; line-height:1.1; letter-spacing:-.02em; }
h4,h5{ font-family:var(--font-sans); font-weight:800; }

p{ max-width:72ch; }

:focus-visible{ outline:2px solid var(--sky); outline-offset:3px; border-radius:4px; }

#main-content{ display:block; scroll-margin-top:110px; }

.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; border:0;
}
.is-hidden{ display:none !important; }
.mono{ font-family:var(--font-mono); letter-spacing:.04em; }

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed; left:16px; top:-80px; z-index:200;
  padding:12px 22px;
  background:var(--ink); color:var(--cream);
  font-weight:800; font-size:.92rem;
  border-radius:0 0 14px 14px;
  transition:top .18s ease;
}
.skip-link:focus{ top:0; }

/* ---------- 滚动进度 ---------- */
.scroll-progress{
  position:fixed; inset:0 0 auto 0; height:4px; z-index:150;
  pointer-events:none; background:transparent;
}
.scroll-progress::after{
  content:""; display:block; height:100%; width:var(--progress,0%);
  background:linear-gradient(90deg,var(--grass) 0%,var(--sky) 55%,var(--orange) 100%);
  transition:width .1s linear;
}

/* ---------- 坐标头 ---------- */
.coord-bar{
  background:var(--cream);
  border-bottom:1px solid var(--mist);
}
.coord-inner{
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  padding:7px 0;
  font-family:var(--font-mono);
  font-size:.64rem; letter-spacing:.16em; text-transform:uppercase;
  color:var(--grass-deep);
  white-space:nowrap; overflow:hidden;
}
.coord{ display:inline-flex; align-items:center; gap:8px; }
.coord::before{
  content:""; width:6px; height:6px; background:var(--orange);
  border-radius:1px; flex:none;
}
.coord--mid{ color:var(--sky); }
.coord--end{ color:#6b7378; }
@media (max-width:720px){
  .coord-inner{ font-size:.58rem; letter-spacing:.1em; }
  .coord--mid{ display:none; }
}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:sticky; top:0; z-index:100;
  padding:14px 0;
  background:rgba(247,243,234,.88);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:padding .22s ease,border-color .22s ease;
}
.site-header[data-scrolled]{
  padding:8px 0;
  border-bottom-color:var(--mist);
}

.header-inner{
  display:flex; align-items:center; gap:14px;
  min-height:58px;
  padding:8px 10px 8px 18px;
  background:var(--cream);
  border:3px solid var(--ink);
  border-radius:var(--pill);
  box-shadow:var(--hard);
  transition:padding .22s ease,box-shadow .22s ease;
}
.site-header[data-scrolled] .header-inner{
  box-shadow:var(--hard-sm);
  padding-block:4px;
}

/* 品牌 */
.brand{
  display:flex; align-items:center; gap:9px; flex:none;
  padding:2px 4px;
}
.brand-mark{
  font-family:var(--font-sans); font-weight:900;
  font-size:1.3rem; letter-spacing:-.03em; line-height:1;
  color:var(--ink);
}
.brand-cn{
  background:var(--grass); color:var(--cream);
  font-weight:900; font-size:.92rem; line-height:1;
  padding:5px 9px; border-radius:8px;
  letter-spacing:.04em;
}
.brand-tag{
  font-family:var(--font-mono);
  font-size:.6rem; letter-spacing:.16em;
  color:var(--grass-deep);
  padding-left:12px; margin-left:4px;
  border-left:1px solid var(--mist);
  white-space:nowrap;
}
@media (max-width:980px){ .brand-tag{ display:none; } }
@media (max-width:420px){
  .brand-mark{ font-size:1.06rem; }
  .brand-cn{ font-size:.8rem; padding:4px 7px; }
}

/* 导航 */
.site-nav{ margin-left:auto; }
.nav-list{ display:flex; align-items:center; gap:2px; }
.nav-item{ display:flex; }

.nav-link{
  display:inline-flex; align-items:center; gap:6px;
  padding:9px 12px;
  border-radius:var(--pill);
  border:2px solid transparent;
  font-family:var(--font-sans); font-weight:800; font-size:.9rem;
  color:var(--grass-deep);
  white-space:nowrap;
  transition:background .16s ease,color .16s ease,border-color .16s ease,box-shadow .16s ease;
}
.nav-link::before{
  content:attr(data-idx);
  font-family:var(--font-mono); font-weight:700;
  font-size:.58rem; letter-spacing:.06em;
  color:var(--grass); opacity:.6;
}
.nav-link:hover{ background:var(--sky-soft); border-color:var(--sky); }
.nav-link[aria-current="page"]{
  background:var(--grass); color:var(--cream);
  border-color:var(--grass-deep);
  box-shadow:3px 3px 0 rgba(11,59,60,.35);
}
.nav-link[aria-current="page"]::before{ color:var(--orange-soft); opacity:.95; }

.nav-link--cta{
  margin-left:6px;
  border-color:var(--orange);
  color:var(--wine);
  background:var(--orange-soft);
}
.nav-link--cta::before{ color:var(--orange); opacity:1; }
.nav-link--cta:hover{ background:var(--orange); border-color:var(--ink); color:var(--ink); }
.nav-link--cta[aria-current="page"]{ background:var(--orange); border-color:var(--ink); color:var(--ink); }
.nav-link--cta[aria-current="page"]::before{ color:var(--ink); }

/* 操作区 / 汉堡 */
.header-actions{ display:flex; align-items:center; gap:10px; flex:none; }
.nav-toggle{
  display:none;
  align-items:center; justify-content:center;
  width:46px; height:46px; padding:0;
  background:var(--cream);
  border:2px solid var(--ink);
  border-radius:50%;
  cursor:pointer;
  transition:background .16s ease,transform .16s ease;
}
.nav-toggle:hover{ background:var(--orange-soft); }
.nav-toggle:active{ transform:scale(.95); }
.nav-toggle__bars{ position:relative; display:block; width:20px; height:12px; }
.nav-toggle__bars span{
  position:absolute; left:0; width:100%; height:3px;
  background:var(--ink); border-radius:2px;
  transition:transform .2s ease;
}
.nav-toggle__bars span:first-child{ top:0; }
.nav-toggle__bars span:last-child{ bottom:0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child{ transform:translateY(4.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child{ transform:translateY(-4.5px) rotate(-45deg); }

/* 移动端：底部胶囊条 */
@media (max-width:1023px){
  .header-inner{ justify-content:space-between; padding-right:8px; }
  .header-actions{ margin-left:auto; }
  .nav-toggle{ display:inline-flex; }

  .site-nav{
    position:fixed;
    left:12px; right:12px; bottom:12px;
    z-index:120;
    margin-left:0;
    padding:14px;
    max-height:calc(100vh - 96px);
    overflow-y:auto;
    background:var(--cream);
    border:3px solid var(--ink);
    border-radius:26px;
    box-shadow:0 -4px 0 rgba(11,59,60,.14), var(--hard);
    transform:translateY(140%);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:transform .28s cubic-bezier(.2,.8,.3,1),opacity .2s ease,visibility 0s linear .28s;
  }
  .site-nav[data-open]{
    transform:translateY(0);
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transition:transform .28s cubic-bezier(.2,.8,.3,1),opacity .2s ease,visibility 0s;
  }
  .nav-list{ flex-direction:column; align-items:stretch; gap:4px; }
  .nav-item{ display:block; }
  .nav-link{
    padding:13px 16px;
    border-radius:14px;
    border-width:2px;
    border-color:var(--mist);
    font-size:1.02rem;
    justify-content:flex-start;
  }
  .nav-link::before{ font-size:.64rem; }
  .nav-link[aria-current="page"]{ box-shadow:none; border-color:var(--grass-deep); }
  .nav-link--cta{ margin-left:0; margin-top:6px; }
}

/* ---------- 通用布局 ---------- */
.wrap{
  width:min(1240px,100% - var(--gutter) * 2);
  margin-inline:auto;
}

.section{ padding:56px 0; }
.section--tight{ padding:32px 0; }
@media (min-width:1024px){
  .section{ padding:80px 0; }
  .section--tight{ padding:44px 0; }
}

.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:24px;
}
.col-4{ grid-column:span 4; }
.col-5{ grid-column:span 5; }
.col-7{ grid-column:span 7; }
.col-8{ grid-column:span 8; }
.col-12{ grid-column:span 12; }
@media (max-width:900px){
  .grid-12{ grid-template-columns:repeat(6,minmax(0,1fr)); gap:18px; }
  .col-4,.col-5,.col-7,.col-8,.col-12{ grid-column:span 6; }
}

/* ---------- 排版组件 ---------- */
.eyebrow{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--font-mono);
  font-size:.72rem; letter-spacing:.2em; text-transform:uppercase;
  color:var(--grass-deep);
}
.eyebrow::before{
  content:""; width:26px; height:3px; background:var(--orange); flex:none;
}

.display-title{
  font-family:var(--font-display); font-weight:900;
  font-size:clamp(38px,9vw,112px);
  line-height:.98; letter-spacing:-.03em;
  color:var(--ink);
  max-width:none;
}

.lede{
  font-size:clamp(16px,1.8vw,19px);
  line-height:1.72;
  color:#3c4348;
  max-width:62ch;
}

/* 面包屑 */
.breadcrumbs{ padding:20px 0 0; }
.breadcrumbs ol{
  display:flex; flex-wrap:wrap; gap:8px;
  font-family:var(--font-mono);
  font-size:.72rem; letter-spacing:.08em;
  color:var(--grass-deep);
}
.breadcrumbs li{ display:flex; align-items:center; gap:8px; }
.breadcrumbs li + li::before{ content:"/"; color:var(--mist); }
.breadcrumbs a:hover{ color:var(--orange); }
.breadcrumbs [aria-current="page"]{ color:var(--ink); }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:14px 24px;
  font-family:var(--font-sans); font-weight:800; font-size:.95rem; line-height:1;
  color:var(--ink);
  background:var(--cream);
  border:2px solid var(--ink);
  border-radius:var(--pill);
  cursor:pointer;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease,color .16s ease;
}
.btn:hover{ transform:translate(-2px,-2px); box-shadow:var(--hard-sm); }
.btn:active{ transform:translate(0,0); box-shadow:none; }
.btn--primary{ background:var(--grass); color:var(--cream); border-color:var(--grass-deep); }
.btn--primary:hover{ background:var(--grass-deep); }
.btn--orange{ background:var(--orange); color:var(--ink); border-color:var(--ink); }
.btn--orange:hover{ background:#ff8340; }
.btn--ghost{ background:transparent; }
.btn--ghost:hover{ background:var(--sky-soft); }
.btn--sm{ padding:9px 16px; font-size:.85rem; }

/* ---------- 胶囊标签 ---------- */
.capsule-tag{
  display:inline-flex; align-items:center; gap:6px;
  padding:5px 12px;
  border-radius:var(--pill);
  background:var(--orange-soft);
  border:1.5px solid var(--orange);
  color:var(--ink);
  font-family:var(--font-sans); font-weight:800; font-size:.74rem; letter-spacing:.02em;
  line-height:1.5;
}
.capsule-tag--grass{ background:#E4F2E9; border-color:var(--grass); color:var(--grass-deep); }
.capsule-tag--sky{ background:var(--sky-soft); border-color:var(--sky); color:#0d4a6e; }

/* ---------- 斜切主题带 ---------- */
.band{
  position:relative;
  margin:64px 0;
  padding:0;
  background:var(--teal);
  color:var(--cream);
  transform:skewY(-2deg);
}
.band__inner{
  transform:skewY(2deg);
  padding:44px 0;
}
.band--teal{ background:var(--teal); }
.band--wine{ background:var(--wine); }
.band--orange{ background:var(--orange); color:var(--ink); }
.band--grass{ background:var(--grass); }
@media (max-width:767px){
  .band__inner{ padding:34px 0; }
}

/* ---------- 索引矩阵 ---------- */
.index-matrix{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  border-top:1px solid var(--mist);
  border-left:1px solid var(--mist);
  background:rgba(255,255,255,.24);
}
.index-cell{
  display:block;
  padding:22px 20px 24px;
  border-right:1px solid var(--mist);
  border-bottom:1px solid var(--mist);
  transition:background .18s ease,box-shadow .18s ease;
}
.index-cell:hover{ background:var(--sky-soft); box-shadow:inset 4px 0 0 var(--grass); }
.index-cell__num{
  display:block;
  font-family:var(--font-mono); font-size:.7rem; letter-spacing:.16em;
  color:var(--orange);
  margin-bottom:10px;
}
.index-cell__title{
  display:block;
  font-family:var(--font-sans); font-weight:800; font-size:1.05rem;
  color:var(--ink); line-height:1.4;
}
.index-cell__meta{
  display:block;
  margin-top:6px;
  font-size:.86rem; line-height:1.6; color:#4c5359;
}

/* ---------- 深色数据带 ---------- */
.data-band{
  background:var(--teal);
  color:var(--cream);
  padding:40px 0;
  border-block:3px solid var(--grass-deep);
}
.data-band--wine{ background:var(--wine); border-color:#4a1226; }
.data-band--indigo{ background:var(--indigo); border-color:#241a45; }
.data-figure{
  font-family:var(--font-mono); font-weight:700;
  font-size:clamp(30px,5vw,56px);
  line-height:1; letter-spacing:-.02em;
  color:var(--cream);
}
.data-figure span{ color:var(--orange); }
.data-label{
  margin-top:8px;
  font-family:var(--font-mono);
  font-size:.7rem; letter-spacing:.18em;
  color:rgba(247,243,234,.72);
}

/* ---------- 图片容器基础规则 ---------- */
.media-frame{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16 / 10;
  border:3px solid var(--ink);
  background:var(--sky-soft);
  overflow:hidden;
  box-shadow:var(--hard);
}
.media-frame img{
  display:block; width:100%; height:100%;
  object-fit:cover; object-position:center;
}
.media-frame--wide{ aspect-ratio:21 / 9; }
.media-frame--tall{ aspect-ratio:4 / 5; }
.media-frame--square{ aspect-ratio:1 / 1; }
.media-frame__tag{
  position:absolute; left:12px; bottom:12px;
  display:inline-flex; align-items:center; gap:6px;
  padding:5px 12px;
  background:var(--orange); color:var(--ink);
  border:2px solid var(--ink);
  border-radius:var(--pill);
  font-family:var(--font-mono); font-weight:700; font-size:.68rem; letter-spacing:.08em;
}

/* ---------- 筛选 ---------- */
.filter-bar{
  display:flex; flex-wrap:wrap; gap:8px;
  padding:16px 0;
  border-block:1px dashed var(--mist);
}
.filter-btn{
  padding:8px 15px;
  font-family:var(--font-mono); font-size:.74rem; letter-spacing:.1em;
  color:var(--ink);
  background:transparent;
  border:1.5px solid var(--ink);
  border-radius:var(--pill);
  cursor:pointer;
  transition:background .16s ease,box-shadow .16s ease,color .16s ease;
}
.filter-btn:hover{ background:var(--sky-soft); }
.filter-btn[aria-pressed="true"]{
  background:var(--orange);
  border-color:var(--ink);
  color:var(--ink);
  box-shadow:3px 3px 0 rgba(11,59,60,.85);
}

/* ---------- 复制按钮 ---------- */
.copy-btn{
  padding:4px 10px;
  font-family:var(--font-mono); font-size:.66rem; letter-spacing:.08em;
  color:var(--grass-deep);
  background:transparent;
  border:1.5px solid var(--mist);
  border-radius:var(--pill);
  cursor:pointer;
  transition:background .16s ease,border-color .16s ease,color .16s ease;
}
.copy-btn:hover{ background:var(--sky-soft); border-color:var(--sky); }
.copy-btn[data-copied]{
  background:var(--orange);
  border-color:var(--ink);
  color:var(--ink);
}

/* ---------- 显现动画 ---------- */
.has-js [data-reveal]{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .5s ease,transform .5s cubic-bezier(.2,.8,.3,1);
  transition-delay:calc(var(--i,0) * 40ms);
}
.has-js [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:96px;
  padding:0 0 30px;
  background:var(--cream);
  border-top:3px solid var(--ink);
}
.site-footer::before{
  content:"";
  position:absolute; inset:0 0 auto 0; height:6px;
  background:repeating-linear-gradient(90deg,
    var(--grass) 0 28px,
    var(--sky) 28px 56px,
    var(--orange) 56px 84px,
    var(--wine) 84px 112px);
}

.footer-head{
  display:flex; flex-wrap:wrap; align-items:baseline; justify-content:space-between; gap:12px;
  padding:42px 0 20px;
  border-bottom:1px solid var(--mist);
}
.footer-brand{
  font-family:var(--font-display); font-weight:900;
  font-size:clamp(19px,2.6vw,28px);
  line-height:1.2; letter-spacing:-.01em;
  color:var(--ink);
  max-width:none;
}
.footer-coord{
  font-family:var(--font-mono);
  font-size:.64rem; letter-spacing:.16em; text-transform:uppercase;
  color:var(--grass-deep);
  max-width:none;
}

.footer-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr)) minmax(0,1.7fr);
  gap:34px 28px;
  padding:34px 0;
  border-bottom:1px solid var(--mist);
}
@media (max-width:1023px){
  .footer-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .footer-contact{ grid-column:1 / -1; }
}
@media (max-width:640px){
  .footer-grid{ grid-template-columns:1fr; gap:28px; }
}

.footer-col__title{
  font-family:var(--font-mono);
  font-size:.68rem; font-weight:700; letter-spacing:.22em; text-transform:uppercase;
  color:var(--grass-deep);
  padding-bottom:10px; margin-bottom:12px;
  border-bottom:2px solid var(--grass);
  display:inline-block;
}

.footer-list{ display:flex; flex-direction:column; gap:2px; }
.footer-link{
  display:inline-block;
  padding:6px 0;
  font-size:.95rem;
  color:var(--ink);
  transition:color .16s ease,transform .16s ease;
}
.footer-link:hover{ color:var(--grass); transform:translateX(4px); }

.footer-contact{ min-width:0; }
.contact-row{
  display:flex; flex-wrap:wrap; align-items:baseline; gap:8px;
  padding:7px 0;
  border-bottom:1px dashed var(--mist);
  font-size:.9rem;
}
.contact-label{
  font-family:var(--font-mono);
  font-size:.64rem; letter-spacing:.12em;
  color:var(--sky);
  flex:none; min-width:38px;
}
.contact-value{
  color:var(--ink);
  word-break:break-word;
  line-height:1.6;
}
.footer-note{
  margin-top:16px;
  padding-left:12px;
  border-left:3px solid var(--orange);
  font-family:var(--font-mono);
  font-size:.7rem; line-height:1.9;
  color:#5b6267;
  max-width:46ch;
}

.footer-legal{
  display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:10px 24px;
  padding-top:22px;
  font-family:var(--font-mono);
  font-size:.72rem; letter-spacing:.06em;
  color:#5b6267;
}
.footer-legal__icp{ color:var(--grass-deep); }

/* ---------- 减少动态偏好 ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .has-js [data-reveal]{ opacity:1; transform:none; transition:none; }
  .band{ transform:none; }
  .band__inner{ transform:none; }
  .btn:hover{ transform:none; }
  .footer-link:hover{ transform:none; }
}