/* ============================================================
   B体育赛场 · 共享站点样式 /assets/site.css
   夜场转播控制室 + 展览画册：炭黑底、墨绿面板、青绿数据、橙色状态
   ============================================================ */

:root{
  --ink:#080D0B;
  --deep:#0B1A15;
  --panel:#123029;
  --mint:#63FFC4;
  --mint-soft:rgba(99,255,196,.10);
  --orange:#FF6B2C;
  --red:#FF4F4F;
  --yellow:#FFD34E;
  --gray:#9FB0A8;
  --paper:#F2F7F4;
  --line:#244038;
  --line-soft:rgba(36,64,56,.62);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-serif:"Songti SC","Source Han Serif SC","Noto Serif SC",Georgia,"Times New Roman",serif;
  --font-mono:"SFMono-Regular",ui-monospace,Menlo,Consolas,"Liberation Mono",monospace;
  --shell:1280px;
  --gutter:clamp(16px,4vw,48px);
  --dur:.24s;
  --ease:cubic-bezier(.22,.61,.36,1);
  --bs-progress:0;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:132px;}
body{
  margin:0;
  min-height:100vh;
  background:
    radial-gradient(120% 80% at 88% -12%,rgba(99,255,196,.10),transparent 56%),
    radial-gradient(90% 70% at -12% -6%,rgba(255,107,44,.09),transparent 52%),
    var(--ink);
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img,svg,video{max-width:100%;height:auto;display:block;}
a{color:inherit;}
button,input,select,textarea{font:inherit;color:inherit;}
table{border-collapse:collapse;width:100%;}
::selection{background:var(--mint);color:#04140E;}
:where(a,button,summary,[tabindex],input,select,textarea):focus-visible{
  outline:2px solid var(--mint);
  outline-offset:3px;
  border-radius:0;
}

/* ---------- 基础排版 ---------- */
.bs-container{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.bs-section{padding-block:clamp(36px,6vw,80px);}
.bs-section__head{
  display:grid;
  gap:12px;
  max-width:64ch;
  margin-bottom:clamp(20px,3vw,36px);
}
.bs-kicker{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  line-height:1;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--orange);
}
.bs-kicker::before{content:"";width:26px;height:1px;background:currentColor;}
.bs-title{
  margin:0;
  font-family:var(--font-sans);
  font-weight:800;
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.12;
  letter-spacing:-.015em;
  color:var(--paper);
}
.bs-title--serif{
  font-family:var(--font-serif);
  font-weight:700;
  letter-spacing:.01em;
}
.bs-lead{
  max-width:64ch;
  font-size:clamp(15px,1.5vw,17px);
  line-height:1.75;
  color:var(--gray);
}
.bs-prose{max-width:66ch;color:#D9E4DE;}
.bs-prose p{margin:0 0 1.1em;}
.bs-prose p:last-child{margin-bottom:0;}
.bs-prose h2,.bs-prose h3{
  margin:1.6em 0 .6em;
  font-family:var(--font-sans);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.01em;
  color:var(--paper);
}
.bs-prose h2{font-size:clamp(21px,2.2vw,26px);}
.bs-prose h3{font-size:clamp(17px,1.8vw,20px);}
.bs-prose ul,.bs-prose ol{margin:0 0 1.1em;padding-left:1.15em;list-style:disc;}
.bs-prose li{margin-bottom:.45em;}
.bs-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.bs-rule{height:1px;border:0;background:var(--line);margin:0;}
.bs-link{
  color:var(--mint);
  text-decoration:none;
  border-bottom:1px solid rgba(99,255,196,.42);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.bs-link:hover{border-bottom-color:var(--mint);color:#A8FFDD;}

/* ---------- 网格 ---------- */
.bs-grid{display:grid;gap:clamp(16px,2.4vw,28px);}
.bs-grid--2{grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));}
.bs-grid--3{grid-template-columns:repeat(auto-fit,minmax(min(100%,262px),1fr));}
.bs-grid--4{grid-template-columns:repeat(auto-fit,minmax(min(100%,210px),1fr));}

/* ---------- 按钮 ---------- */
.bs-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:11px 18px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:600;
  line-height:1.1;
  letter-spacing:.02em;
  text-decoration:none;
  cursor:pointer;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.bs-btn:hover{border-color:var(--mint);color:var(--mint);background:var(--mint-soft);}
.bs-btn--primary{background:var(--mint);border-color:var(--mint);color:#04140E;}
.bs-btn--primary:hover{background:#93FFD8;border-color:#93FFD8;color:#04140E;}
.bs-btn--ghost{border-color:var(--line);color:var(--paper);}
.bs-btn--orange{border-color:var(--orange);color:var(--orange);}
.bs-btn--orange:hover{background:var(--orange);color:#180800;border-color:var(--orange);}
.bs-btn__arrow{
  font-family:var(--font-mono);
  transition:transform var(--dur) var(--ease);
}
.bs-btn:hover .bs-btn__arrow{transform:translateX(4px);}

/* ---------- 标签 / 状态 / 元信息 ---------- */
.bs-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 8px;
  border:1px solid var(--line);
  background:rgba(8,13,11,.66);
  color:var(--gray);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  line-height:1;
  letter-spacing:.1em;
  text-transform:uppercase;
}
.bs-tag--mint{color:var(--mint);border-color:rgba(99,255,196,.42);background:var(--mint-soft);}
.bs-tag--orange{color:var(--orange);border-color:rgba(255,107,44,.42);background:rgba(255,107,44,.10);}
.bs-tag--red{color:var(--red);border-color:rgba(255,79,79,.45);background:rgba(255,79,79,.10);}
.bs-tag--yellow{color:var(--yellow);border-color:rgba(255,211,78,.45);background:rgba(255,211,78,.10);}
.bs-status{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  line-height:1;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--gray);
}
.bs-dot{
  width:7px;
  height:7px;
  display:inline-block;
  flex:0 0 auto;
  background:var(--mint);
  box-shadow:0 0 0 3px rgba(99,255,196,.14);
}
.bs-dot--live{background:var(--mint);box-shadow:0 0 0 3px rgba(99,255,196,.14);}
.bs-dot--warn{background:var(--yellow);box-shadow:0 0 0 3px rgba(255,211,78,.16);}
.bs-dot--alert{background:var(--red);box-shadow:0 0 0 3px rgba(255,79,79,.16);}
.bs-meta{
  display:flex;
  flex-wrap:wrap;
  gap:6px 16px;
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.5;
  letter-spacing:.06em;
  color:var(--gray);
}

/* ---------- 面板 ---------- */
.bs-panel{
  position:relative;
  padding:clamp(16px,2.4vw,26px);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(18,48,41,.92),rgba(11,26,21,.92));
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.bs-panel:hover{border-color:rgba(99,255,196,.42);}
.bs-panel__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:12px;
  margin-bottom:14px;
  border-bottom:1px solid var(--line);
}
.bs-panel__title{
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  line-height:1.2;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--gray);
}

/* ---------- 索引列表 ---------- */
.bs-index{border-top:1px solid var(--line);}
.bs-index__item{border-bottom:1px solid var(--line);}
.bs-index__link{
  display:grid;
  grid-template-columns:auto 1fr auto;
  gap:14px;
  align-items:center;
  padding:14px 4px;
  color:var(--paper);
  text-decoration:none;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),padding var(--dur) var(--ease);
}
.bs-index__link:hover,
.bs-index__link:focus-visible{background:rgba(18,48,41,.75);color:var(--mint);padding-inline:12px;}
.bs-index__num{
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1;
  letter-spacing:.1em;
  color:var(--gray);
}
.bs-index__label{font-size:15px;font-weight:600;line-height:1.4;}
.bs-index__meta{
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1;
  letter-spacing:.08em;
  color:var(--gray);
}

/* ---------- 面包屑 ---------- */
.bs-breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 0;
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.4;
  letter-spacing:.06em;
  color:var(--gray);
}
.bs-breadcrumb li{display:inline-flex;align-items:center;}
.bs-breadcrumb li + li::before{content:"/";margin:0 10px;color:var(--line);}
.bs-breadcrumb a{color:var(--gray);text-decoration:none;transition:color var(--dur) var(--ease);}
.bs-breadcrumb a:hover{color:var(--mint);}
.bs-breadcrumb [aria-current="page"]{color:var(--paper);}

/* ---------- 图片容器基座 ---------- */
.bs-media{
  position:relative;
  display:block;
  overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(160deg,var(--deep),#050907);
}
.bs-media::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(36,64,56,.34) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(36,64,56,.34) 1px,transparent 1px);
  background-size:32px 32px;
  opacity:.55;
}
.bs-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.92) contrast(1.06) brightness(.94);
}
.bs-media--wide{aspect-ratio:16/9;}
.bs-media--square{aspect-ratio:1/1;}
.bs-media--tall{aspect-ratio:3/4;}
.bs-media--band{aspect-ratio:21/9;}
.bs-media__caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  z-index:2;
  padding:12px 14px;
  background:linear-gradient(0deg,rgba(8,13,11,.94),rgba(8,13,11,0));
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.5;
  letter-spacing:.08em;
}

/* ---------- 结构工具 ---------- */
.bs-scroll-x{
  display:flex;
  gap:12px;
  overflow-x:auto;
  padding-bottom:10px;
  scroll-snap-type:x proximity;
  scrollbar-color:var(--line) transparent;
  scrollbar-width:thin;
}
.bs-scroll-x > *{flex:0 0 auto;scroll-snap-align:start;}
.bs-scroll-x::-webkit-scrollbar{height:6px;}
.bs-scroll-x::-webkit-scrollbar-thumb{background:var(--line);}
.bs-aside{
  position:sticky;
  top:clamp(96px,12vh,140px);
  align-self:start;
}
.bs-grid-lines{
  background-image:
    linear-gradient(to right,rgba(36,64,56,.34) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(36,64,56,.34) 1px,transparent 1px);
  background-size:48px 48px;
}
.bs-no-scroll{overflow:hidden;}

/* ---------- 跳至主要内容 ---------- */
.bs-skip{
  position:fixed;
  left:16px;
  top:-120px;
  z-index:200;
  padding:10px 18px;
  background:var(--mint);
  color:#04140E;
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:700;
  line-height:1;
  text-decoration:none;
  transition:top .2s var(--ease);
}
.bs-skip:focus{top:16px;}

/* ============================================================
   头部
   ============================================================ */
.bs-header{
  position:sticky;
  top:0;
  z-index:80;
  background:linear-gradient(180deg,rgba(8,13,11,.97),rgba(11,26,21,.94));
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.bs-header[data-scrolled="true"]{
  background:linear-gradient(180deg,rgba(6,10,9,.99),rgba(10,23,19,.98));
  box-shadow:0 18px 36px -30px rgba(0,0,0,.95);
}
.bs-header__progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:linear-gradient(90deg,var(--mint),var(--orange));
  transform:scaleX(var(--bs-progress,0));
  transform-origin:0 50%;
  transition:transform .12s linear;
  pointer-events:none;
}

/* 顶部信息带 */
.bs-utility{background:rgba(11,26,21,.62);border-bottom:1px solid var(--line-soft);}
.bs-utility__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding:7px var(--gutter);
}
.bs-utility__text{
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.4;
  letter-spacing:.1em;
  color:var(--gray);
}
.bs-utility__status{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.4;
  letter-spacing:.1em;
  color:var(--mint);
  white-space:nowrap;
}

/* 主行 */
.bs-header__inner{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:clamp(12px,2.4vw,28px);
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding:11px var(--gutter);
}

/* 品牌 */
.bs-brand{
  display:inline-flex;
  align-items:center;
  gap:11px;
  min-width:0;
  text-decoration:none;
  color:var(--paper);
}
.bs-brand__mark{
  position:relative;
  display:grid;
  place-items:center;
  width:38px;
  height:38px;
  flex:0 0 auto;
  background:var(--panel);
  border:1px solid var(--line);
  color:var(--mint);
  font-family:var(--font-sans);
  font-size:18px;
  font-weight:800;
  line-height:1;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.bs-brand__mark::after{
  content:"";
  position:absolute;
  right:-1px;
  bottom:-1px;
  width:9px;
  height:9px;
  background:var(--orange);
}
.bs-brand:hover .bs-brand__mark{border-color:var(--mint);color:#A8FFDD;}
.bs-brand__text{display:grid;gap:3px;min-width:0;}
.bs-brand__name{
  font-size:16px;
  font-weight:800;
  line-height:1.15;
  letter-spacing:.02em;
  color:var(--paper);
}
.bs-brand__status{
  display:flex;
  align-items:center;
  gap:6px;
  font-family:var(--font-mono);
  font-size:10px;
  line-height:1.3;
  letter-spacing:.08em;
  color:var(--gray);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.bs-brand__status .bs-dot{width:6px;height:6px;box-shadow:0 0 0 2px rgba(99,255,196,.16);}

/* 导航 */
.bs-nav{min-width:0;}
.bs-nav__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:2px;
}
.bs-nav__item{display:block;}
.bs-nav__link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  padding:9px 9px;
  border:1px solid transparent;
  color:var(--gray);
  font-size:13px;
  font-weight:600;
  line-height:1.2;
  letter-spacing:.01em;
  text-decoration:none;
  white-space:nowrap;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.bs-nav__idx{
  font-family:var(--font-mono);
  font-size:10px;
  font-weight:400;
  line-height:1;
  letter-spacing:.06em;
  color:rgba(159,176,168,.55);
  transition:color var(--dur) var(--ease);
}
.bs-nav__link:hover,
.bs-nav__link:focus-visible{
  color:var(--paper);
  background:rgba(18,48,41,.78);
  border-color:var(--line);
}
.bs-nav__link:hover .bs-nav__idx{color:var(--mint);}
.bs-nav__link[aria-current="page"]{
  color:var(--mint);
  background:var(--mint-soft);
  border-color:rgba(99,255,196,.36);
}
.bs-nav__link[aria-current="page"] .bs-nav__idx{color:var(--mint);}
.bs-nav__link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:9px;
  right:9px;
  bottom:3px;
  height:1px;
  background:var(--mint);
}

/* 工具区 */
.bs-header__tools{display:flex;align-items:center;gap:10px;}
.bs-header__cta{padding:9px 14px;font-size:13px;white-space:nowrap;}
.bs-nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 12px;
  border:1px solid var(--line);
  background:var(--panel);
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:13px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.bs-nav-toggle:hover{border-color:var(--mint);color:var(--mint);}
.bs-nav-toggle__bars{display:inline-flex;flex-direction:column;gap:3px;width:16px;}
.bs-nav-toggle__bars span{
  display:block;
  height:1px;
  width:100%;
  background:currentColor;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.bs-nav-toggle__label{letter-spacing:.06em;}
.bs-header[data-open="true"] .bs-nav-toggle__bars span:nth-child(1){transform:translateY(4px) rotate(45deg);}
.bs-header[data-open="true"] .bs-nav-toggle__bars span:nth-child(2){opacity:0;}
.bs-header[data-open="true"] .bs-nav-toggle__bars span:nth-child(3){transform:translateY(-4px) rotate(-45deg);}
.bs-header[data-open="true"] .bs-nav-toggle{border-color:var(--mint);color:var(--mint);}

/* ============================================================
   页脚
   ============================================================ */
.bs-footer{
  position:relative;
  margin-top:clamp(48px,8vw,96px);
  background:linear-gradient(180deg,rgba(11,26,21,.94),var(--ink) 62%);
  border-top:1px solid var(--line);
}
.bs-footer::before{
  content:"";
  display:block;
  height:2px;
  background:linear-gradient(90deg,var(--mint) 0%,rgba(99,255,196,0) 38%,rgba(255,107,44,0) 62%,var(--orange) 100%);
}
.bs-footer__grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.25fr;
  gap:clamp(24px,3.6vw,52px);
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding:clamp(32px,5vw,64px) var(--gutter) clamp(24px,4vw,44px);
}
.bs-footer__brand{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:12px;
}
.bs-footer__mark{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:800;
  line-height:1.2;
  letter-spacing:.02em;
  color:var(--paper);
}
.bs-footer__mark::before{
  content:"";
  width:10px;
  height:10px;
  flex:0 0 auto;
  background:var(--mint);
}
.bs-footer__line{
  font-family:var(--font-serif);
  font-size:15px;
  font-weight:500;
  line-height:1.5;
  letter-spacing:.04em;
  color:var(--mint);
}
.bs-footer__summary{
  max-width:34ch;
  font-size:14px;
  line-height:1.7;
  color:var(--gray);
}
.bs-footer__cta{margin-top:4px;padding:9px 14px;font-size:13px;}
.bs-footer__col{min-width:0;}
.bs-footer__col-title{
  margin:0 0 14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  line-height:1;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--gray);
}
.bs-footer__links{display:grid;gap:9px;}
.bs-footer__link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--paper);
  font-size:14px;
  line-height:1.5;
  text-decoration:none;
  transition:color var(--dur) var(--ease);
}
.bs-footer__link::before{
  content:"";
  width:12px;
  height:1px;
  flex:0 0 auto;
  background:var(--line);
  transition:width var(--dur) var(--ease),background var(--dur) var(--ease);
}
.bs-footer__link:hover{color:var(--mint);}
.bs-footer__link:hover::before{width:20px;background:var(--mint);}
.bs-footer__contact{display:grid;gap:10px;align-content:start;}
.bs-footer__contact-item{
  display:grid;
  grid-template-columns:42px 1fr;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12.5px;
  line-height:1.65;
  letter-spacing:.02em;
  color:var(--paper);
  word-break:break-word;
}
.bs-footer__contact-item span{
  color:var(--gray);
  letter-spacing:.1em;
}
.bs-footer__legal{border-top:1px solid var(--line);}
.bs-footer__legal-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding:16px var(--gutter);
}
.bs-footer__legal-inner p{
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.6;
  letter-spacing:.04em;
  color:var(--gray);
}
.bs-footer__legal-links{display:flex;flex-wrap:wrap;gap:6px 18px;}
.bs-footer__legal-links li{display:inline-flex;}
.bs-footer__legal-links a{
  color:var(--gray);
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.6;
  letter-spacing:.04em;
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.bs-footer__legal-links a:hover{color:var(--mint);border-bottom-color:var(--mint);}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1180px){
  .bs-nav__link{padding:9px 7px;font-size:12.5px;}
  .bs-nav__idx{display:none;}
  .bs-header__cta{display:none;}
}

@media (max-width:1040px){
  html{scroll-padding-top:112px;}
  .bs-header__inner{
    grid-template-columns:1fr auto;
    gap:10px;
    padding:10px var(--gutter);
  }
  .bs-brand{grid-column:1;grid-row:1;}
  .bs-header__tools{grid-column:2;grid-row:1;}
  .bs-nav{
    grid-column:1 / -1;
    grid-row:2;
    display:none;
    border-top:1px solid var(--line);
    margin-top:6px;
    padding-top:4px;
  }
  .bs-header[data-open="true"] .bs-nav{display:block;}
  .bs-nav__list{flex-direction:column;align-items:stretch;gap:0;padding-bottom:8px;}
  .bs-nav__item{border-bottom:1px solid var(--line-soft);}
  .bs-nav__item:last-child{border-bottom:0;}
  .bs-nav__link{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:13px 6px;
    border:0;
    font-size:15px;
  }
  .bs-nav__link:hover{background:rgba(18,48,41,.8);}
  .bs-nav__link[aria-current="page"]{background:var(--mint-soft);border:0;}
  .bs-nav__link[aria-current="page"]::after{left:6px;right:auto;width:18px;bottom:6px;}
  .bs-nav__idx{display:inline-block;order:2;font-size:11px;}
  .bs-nav-toggle{display:inline-flex;}
  .bs-footer__grid{grid-template-columns:1fr 1fr;gap:28px;}
  .bs-footer__brand{grid-column:1 / -1;}
}

@media (max-width:720px){
  body{font-size:16px;}
  .bs-utility{display:none;}
  .bs-brand__mark{width:34px;height:34px;font-size:16px;}
  .bs-brand__name{font-size:15px;}
  .bs-brand__status{font-size:9.5px;letter-spacing:.05em;}
  .bs-nav-toggle__label{display:none;}
  .bs-footer__grid{grid-template-columns:1fr;gap:24px;}
  .bs-footer__legal-inner{flex-direction:column;align-items:flex-start;gap:10px;}
  .bs-footer__contact-item{grid-template-columns:38px 1fr;}
}

@media (max-width:420px){
  .bs-brand__status{display:none;}
  .bs-title{font-size:clamp(25px,7vw,30px);}
}

/* ---------- 动效与打印 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0ms !important;
  }
  .bs-header__progress{transition:none;}
  .bs-btn:hover .bs-btn__arrow{transform:none;}
}

@media print{
  .bs-header,.bs-footer,.bs-skip{display:none !important;}
  body{background:#fff;color:#000;}
}