/* ============================================================
   BSPORTS · site.css —— 全站共享外壳与基础组件
   深墨绿战术板体系 / 荧光青数据点 / 琥珀金权益点
   ============================================================ */

/* ---------- 1. tokens ---------- */
:root{
  --ink-0:#050F0C;
  --ink-1:#081813;
  --ink-2:#0D2A22;
  --line:#164034;
  --line-strong:#1F5C49;

  --cyan:#29F2C4;
  --cyan-soft:#7BFFDE;
  --amber:#F5B731;
  --amber-soft:#FFD57A;

  --text:#E6F6EF;
  --muted:#9FBDB2;
  --white:#F7FFFB;

  --ease:cubic-bezier(0.2,0.7,0.2,1);
  --dur:160ms;
  --dur-slow:240ms;

  --radius-s:10px;
  --radius-m:16px;
  --radius-l:24px;

  --font-display:"Barlow Semi Condensed","Arial Narrow","Helvetica Neue",Arial,system-ui,"PingFang SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --font-body:"PingFang SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"SFMono-Regular","Roboto Mono",ui-monospace,"DejaVu Sans Mono",Menlo,Consolas,monospace;

  --wrap:1280px;
  --gut:24px;
  --nav-safe:112px;
}

/* ---------- 2. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-weight:800;line-height:1.15}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px}

/* ---------- 3. base / 中文排版 ---------- */
body{
  min-height:100vh;
  background-color:var(--ink-0);
  background-image:
    repeating-linear-gradient(90deg, rgba(22,64,52,.16) 0 48px, transparent 48px 96px),
    radial-gradient(120% 55% at 50% -8%, rgba(41,242,196,.10), transparent 62%);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
p+p{margin-top:1.2em}
strong{color:var(--white);font-weight:700}

#main-content{display:block;padding-top:var(--nav-safe);scroll-margin-top:var(--nav-safe)}
#main-content:focus{outline:none}

/* ---------- 4. utilities ---------- */
.bs-wrap{width:min(var(--wrap),100% - 48px);margin-inline:auto}
.bs-section{padding:clamp(48px,7vw,88px) 0}
.bs-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gut)}
.bs-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}
.bs-dash{height:0;border-top:1px dashed rgba(41,242,196,.28);margin:24px 0}

.bs-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-num);font-size:12px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--cyan);
}
.bs-eyebrow::before{content:"";width:20px;height:2px;background:var(--cyan);flex:0 0 auto}

.bs-display{
  font-family:var(--font-display);
  font-weight:800;text-transform:uppercase;letter-spacing:.06em;
  font-size:clamp(2.2rem,5vw,4.2rem);line-height:1.05;
  color:var(--white);
}
.bs-title{
  font-size:clamp(1.7rem,3.2vw,2.75rem);line-height:1.18;font-weight:800;
  color:var(--white);letter-spacing:.01em;
}
.bs-lead{
  font-size:clamp(1rem,1.35vw,1.125rem);line-height:1.85;color:var(--muted);
  max-width:58ch;
}
.bs-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-weight:600;letter-spacing:-.02em;color:var(--cyan);
  font-size:clamp(2rem,5vw,4rem);line-height:1;
}
.bs-annot{
  font-family:var(--font-num);font-size:12px;letter-spacing:.16em;
  color:var(--muted);text-transform:uppercase;
  writing-mode:vertical-rl;transform:rotate(180deg);
}

/* ---------- 5. buttons ---------- */
.bs-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 18px;border-radius:999px;
  border:2px solid var(--line);
  font-size:14px;font-weight:700;letter-spacing:.02em;line-height:1.2;
  cursor:pointer;white-space:nowrap;
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),color var(--dur) var(--ease),
             box-shadow var(--dur) var(--ease);
}
.bs-btn--solid{
  background:var(--cyan);color:#04120E;border-color:var(--cyan);
  box-shadow:0 4px 0 rgba(2,10,8,.85);
}
.bs-btn--solid:hover{background:var(--cyan-soft);border-color:var(--cyan-soft);transform:translateY(-2px);box-shadow:0 6px 0 rgba(2,10,8,.85)}
.bs-btn--solid:active{transform:translateY(0);box-shadow:0 2px 0 rgba(2,10,8,.85)}
.bs-btn--ghost{background:transparent;color:var(--text);border-color:var(--line)}
.bs-btn--ghost:hover{color:var(--cyan);border-color:var(--cyan);transform:translateY(-2px)}
.bs-btn--amber{background:var(--amber);color:#1A1204;border-color:var(--amber);box-shadow:0 4px 0 rgba(2,10,8,.85)}
.bs-btn--amber:hover{background:var(--amber-soft);border-color:var(--amber-soft);transform:translateY(-2px)}
.bs-btn--sm{padding:7px 14px;font-size:13px}

/* ---------- 6. skip link ---------- */
.skip-link{
  position:fixed;top:10px;left:12px;z-index:200;
  padding:10px 18px;border-radius:999px;
  background:var(--cyan);color:#04120E;
  font-size:13px;font-weight:800;letter-spacing:.04em;
  border:2px solid #04120E;
  transform:translateY(-180%);
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus-visible{transform:translateY(0)}

/* ---------- 7. header ---------- */
.bs-header{
  position:fixed;inset-inline:0;top:0;z-index:100;
  padding:20px 0 0;
  pointer-events:none;
}
.bs-capsule{
  pointer-events:auto;
  position:relative;
  width:min(var(--wrap),100% - 48px);
  max-width:var(--wrap);
  margin-inline:auto;
  display:flex;align-items:center;gap:14px;
  padding:9px 12px 9px 14px;
  background:linear-gradient(180deg,rgba(13,42,34,.94),rgba(8,24,19,.96));
  border:2px solid var(--line);
  border-radius:999px;
  box-shadow:6px 6px 0 rgba(2,10,8,.8),inset 0 1px 0 rgba(123,255,222,.07);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  transition:padding var(--dur-slow) var(--ease),max-width var(--dur-slow) var(--ease),
             border-color var(--dur-slow) var(--ease),box-shadow var(--dur-slow) var(--ease);
}
.bs-header[data-scrolled="true"] .bs-capsule{
  padding:5px 10px 5px 12px;
  max-width:1120px;
  border-color:var(--line-strong);
  box-shadow:4px 5px 0 rgba(2,10,8,.85),0 0 0 1px rgba(41,242,196,.06);
}

/* brand */
.bs-brand{
  display:inline-flex;align-items:center;gap:10px;
  padding:5px 12px 5px 5px;border-radius:999px;flex:0 0 auto;
  transition:background-color var(--dur) var(--ease);
}
.bs-brand:hover{background:rgba(41,242,196,.07)}
.bs-brand__lamp{
  width:11px;height:11px;flex:0 0 auto;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(41,242,196,.14),0 0 14px rgba(41,242,196,.8);
  animation:bs-pulse 3.4s var(--ease) infinite;
}
@keyframes bs-pulse{0%,100%{opacity:1}50%{opacity:.42}}
.bs-brand__text{display:flex;flex-direction:column;line-height:1}
.bs-brand__en{
  font-family:var(--font-display);font-size:19px;font-weight:800;
  letter-spacing:.14em;text-transform:uppercase;color:var(--white);
  transition:color var(--dur) var(--ease);
}
.bs-brand:hover .bs-brand__en{color:var(--cyan)}
.bs-brand__cn{font-size:10px;letter-spacing:.2em;color:var(--muted);margin-top:5px}

/* nav */
.bs-nav{flex:1 1 auto;min-width:0}
.bs-nav__list{display:flex;align-items:center;gap:2px;flex-wrap:nowrap}
.bs-nav__item{display:block}
.bs-nav__link{
  display:inline-block;padding:8px 13px;border-radius:999px;
  font-size:14px;font-weight:600;color:var(--muted);
  border:1px solid transparent;white-space:nowrap;
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),
             border-color var(--dur) var(--ease);
}
.bs-nav__link:hover{color:var(--text);background:rgba(41,242,196,.08);border-color:rgba(41,242,196,.22)}
.bs-nav__link[aria-current="page"]{
  color:var(--cyan);
  background:rgba(41,242,196,.14);
  border-color:rgba(41,242,196,.5);
  box-shadow:inset 0 0 0 1px rgba(41,242,196,.12);
}

/* actions */
.bs-actions{display:flex;align-items:center;gap:8px;margin-left:auto;flex:0 0 auto}

/* mobile toggle */
.bs-navtoggle{
  display:none;align-items:center;gap:8px;
  margin-left:auto;padding:8px 12px;min-height:42px;
  background:rgba(41,242,196,.08);color:var(--text);
  border:2px solid var(--line);border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.08em;cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.bs-navtoggle:hover{border-color:var(--cyan);color:var(--cyan)}
.bs-navtoggle__icon{display:flex;flex-direction:column;justify-content:center;gap:4px;width:16px}
.bs-navtoggle__bar{
  display:block;width:16px;height:2px;border-radius:2px;background:currentColor;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.bs-navtoggle__text{font-size:12px;letter-spacing:.08em}
.bs-header[data-open="true"] .bs-navtoggle{border-color:var(--cyan);color:var(--cyan)}
.bs-header[data-open="true"] .bs-navtoggle__bar:first-child{transform:translateY(3px) rotate(45deg)}
.bs-header[data-open="true"] .bs-navtoggle__bar:last-child{transform:translateY(-3px) rotate(-45deg)}

/* progress line */
.bs-progress{
  position:absolute;left:44px;right:44px;bottom:4px;height:2px;
  border-radius:2px;overflow:hidden;background:rgba(22,64,52,.9);
}
.bs-progress__fill{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--cyan),var(--amber));
  box-shadow:0 0 12px rgba(41,242,196,.65);
  transition:width .1s linear;
}

/* ---------- 8. footer ---------- */
.bs-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(64px,10vw,120px);
  border-top:2px solid var(--line);
  background-color:var(--ink-0);
  background-image:
    repeating-linear-gradient(90deg, rgba(13,42,34,.85) 0 64px, rgba(7,24,19,.85) 64px 128px),
    radial-gradient(120% 80% at 8% 0%, rgba(41,242,196,.12), transparent 62%);
  color:var(--text);
}
.bs-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:0;
  border-top:1px dashed rgba(41,242,196,.22);
}
.bs-footer__inner{
  width:min(var(--wrap),100% - 48px);
  margin-inline:auto;
  padding:clamp(40px,6vw,72px) 0 0;
}
.bs-footer__grid{
  display:grid;grid-template-columns:repeat(12,minmax(0,1fr));
  gap:36px var(--gut);
}
.bs-footer__brand{grid-column:span 3}
.bs-footer__col{grid-column:span 2}
.bs-footer__contact{grid-column:span 3}
.bs-brand--footer{padding-left:0;margin-bottom:16px}
.bs-footer__tagline{
  font-size:14px;line-height:1.85;color:var(--muted);max-width:32ch;
}
.bs-footer__meta{
  margin-top:14px;
  font-family:var(--font-num);font-size:11px;letter-spacing:.16em;
  color:var(--amber-soft);text-transform:uppercase;
}
.bs-footer__heading{
  display:flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  color:var(--muted);margin-bottom:14px;
}
.bs-footer__heading::before{
  content:"";width:8px;height:8px;flex:0 0 auto;
  background:var(--amber);border-radius:2px;transform:rotate(45deg);
}
.bs-footer__list{display:flex;flex-direction:column;gap:2px}
.bs-footer__link{
  display:inline-block;padding:6px 0;font-size:14px;color:var(--text);
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.bs-footer__link:hover{color:var(--cyan);border-bottom-color:var(--cyan);transform:translateX(3px)}
.bs-footer__dl{display:grid;gap:12px}
.bs-footer__row{
  display:grid;gap:2px;padding-bottom:10px;
  border-bottom:1px dashed rgba(22,64,52,.9);
}
.bs-footer__row:last-child{border-bottom:0;padding-bottom:0}
.bs-footer__label{
  font-family:var(--font-num);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--amber-soft);
}
.bs-footer__value{
  margin:0;font-size:13px;line-height:1.75;color:var(--muted);
  overflow-wrap:anywhere;
}
.bs-footer__base{
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;
  gap:12px 24px;
  margin-top:clamp(32px,5vw,56px);padding:20px 0;
  border-top:2px solid var(--line);
  font-size:12px;color:var(--muted);
}
.bs-footer__legal{margin:0;font-family:var(--font-num);letter-spacing:.04em}
.bs-footer__note{margin:0;max-width:62ch;line-height:1.7}
.bs-footer__wordmark{
  margin:0;padding:6px 0 0;text-align:center;
  font-family:var(--font-display);font-weight:800;text-transform:uppercase;
  font-size:clamp(2.4rem,12vw,9rem);line-height:.8;letter-spacing:.04em;
  color:transparent;-webkit-text-stroke:1px rgba(123,255,222,.15);
  user-select:none;pointer-events:none;
}

/* ---------- 9. 基础组件 ---------- */
.bs-card{
  position:relative;
  background:var(--ink-2);
  border:2px solid var(--line);
  border-radius:var(--radius-m);
  padding:clamp(18px,2.4vw,26px);
  box-shadow:8px 8px 0 rgba(2,10,8,.75);
  transition:transform var(--dur-slow) var(--ease),border-color var(--dur-slow) var(--ease),
             box-shadow var(--dur-slow) var(--ease),background-color var(--dur-slow) var(--ease);
}
.bs-card:hover,.bs-card:focus-within{
  transform:translateY(-4px);
  border-color:var(--cyan);
  box-shadow:10px 12px 0 rgba(2,10,8,.8);
}
.bs-card--flat{box-shadow:none}
.bs-card--warm{border-color:#3A2C0C;background:linear-gradient(180deg,rgba(245,183,49,.1),rgba(13,42,34,1) 60%)}

.bs-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;
  border:1px solid var(--line);
  font-family:var(--font-num);font-size:11px;letter-spacing:.1em;
  color:var(--muted);text-transform:uppercase;
}
.bs-tag--amber{border-color:rgba(245,183,49,.55);color:var(--amber-soft);background:rgba(245,183,49,.1)}
.bs-tag--cyan{border-color:rgba(41,242,196,.5);color:var(--cyan);background:rgba(41,242,196,.08)}

.bs-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;
  background:var(--ink-1);border:2px solid var(--line);
  color:var(--muted);font-size:13px;font-weight:600;cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.bs-chip:hover{border-color:var(--line-strong);color:var(--text)}
.bs-chip[aria-pressed="true"]{
  border-color:var(--amber);color:var(--amber-soft);
  background:rgba(245,183,49,.12);
}

.bs-band{
  background:var(--ink-1);
  border-top:2px solid var(--line);
  border-bottom:2px solid var(--line);
  padding:18px 0;
  overflow:hidden;
}
.bs-band__track{
  display:flex;align-items:center;gap:12px;
  overflow-x:auto;padding-inline:24px;
  scrollbar-width:thin;
}
.bs-band__track::-webkit-scrollbar{height:6px}
.bs-band__track::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:99px}

.bs-table{
  width:100%;border-collapse:collapse;
  font-size:15px;background:var(--ink-2);
}
.bs-table caption{
  caption-side:top;text-align:left;padding:0 0 12px;
  font-family:var(--font-num);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted);
}
.bs-table th,.bs-table td{
  padding:10px 14px;text-align:left;
  border-bottom:1px solid var(--line);
}
.bs-table thead th{
  font-family:var(--font-num);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted);
  background:var(--ink-1);
}
.bs-table tbody tr{transition:background-color var(--dur) var(--ease)}
.bs-table tbody tr:hover{background:rgba(41,242,196,.07)}
.bs-table .is-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  text-align:right;color:var(--cyan);
}
.bs-table--pin th:first-child,.bs-table--pin td:first-child{
  position:sticky;left:0;z-index:1;background:var(--ink-2);
  border-right:1px solid var(--line);
}

.bs-crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:12px;letter-spacing:.08em;
  color:var(--muted);
}
.bs-crumbs a{transition:color var(--dur) var(--ease)}
.bs-crumbs a:hover{color:var(--cyan)}
.bs-crumbs__sep{opacity:.5}

.bs-media{
  position:relative;overflow:hidden;
  border:2px solid var(--line);
  border-radius:var(--radius-m);
  aspect-ratio:16/9;min-height:140px;
  background:linear-gradient(160deg,rgba(41,242,196,.18),rgba(13,42,34,.92) 52%,rgba(5,15,12,.98));
  box-shadow:8px 8px 0 rgba(2,10,8,.75);
}
.bs-media img,.bs-media video,.bs-media svg{
  width:100%;height:100%;object-fit:cover;display:block;
}
.bs-media__grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(41,242,196,.16) 1px,transparent 1px),
    linear-gradient(90deg,rgba(41,242,196,.16) 1px,transparent 1px);
  background-size:40px 40px;
  opacity:.55;mix-blend-mode:screen;
}
.bs-media__label{
  position:absolute;left:12px;bottom:10px;
  padding:3px 10px;border-radius:999px;
  background:rgba(5,15,12,.75);border:1px solid var(--line);
  font-family:var(--font-num);font-size:11px;letter-spacing:.1em;
  color:var(--cyan-soft);
}
.bs-media--wide{aspect-ratio:21/9}
.bs-media--tall{aspect-ratio:4/5}

/* ---------- 10. 显现动效 ---------- */
.bs-js [data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity var(--dur-slow) var(--ease),transform var(--dur-slow) var(--ease);
}
.bs-js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 11. 响应式 ---------- */
@media (max-width:1180px){
  .bs-brand__cn{display:none}
  .bs-nav__link{padding:8px 10px;font-size:13px}
  .bs-footer__brand{grid-column:span 6}
  .bs-footer__contact{grid-column:span 6}
  .bs-footer__col{grid-column:span 4}
}
@media (max-width:1040px){
  .bs-btn--ghost{display:none}
}
@media (max-width:900px){
  :root{--nav-safe:96px}
  .bs-header{padding-top:12px}
  .bs-capsule{
    width:calc(100% - 24px);max-width:none;
    flex-wrap:wrap;gap:8px;padding:8px 10px;border-radius:26px;
  }
  .bs-header[data-scrolled="true"] .bs-capsule{max-width:none;padding:8px 10px}
  .bs-brand{padding-left:2px}
  .bs-brand__en{font-size:17px}
  .bs-navtoggle{display:inline-flex;order:2}
  .bs-nav{
    order:3;flex:0 0 100%;
    max-height:0;opacity:0;visibility:hidden;overflow:hidden;
    transition:max-height var(--dur-slow) var(--ease),opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
  }
  .bs-header[data-open="true"] .bs-nav{max-height:560px;opacity:1;visibility:visible}
  .bs-nav__list{
    flex-direction:column;align-items:stretch;gap:2px;
    margin-top:8px;padding-top:8px;border-top:2px dashed var(--line);
  }
  .bs-nav__link{display:block;padding:12px 14px;border-radius:14px;font-size:15px}
  .bs-actions{
    order:4;flex:0 0 100%;margin-left:0;gap:8px;
    max-height:0;opacity:0;visibility:hidden;overflow:hidden;
    padding-bottom:0;
    transition:max-height var(--dur-slow) var(--ease),opacity var(--dur) var(--ease),
               visibility var(--dur) var(--ease),padding var(--dur) var(--ease);
  }
  .bs-header[data-open="true"] .bs-actions{
    max-height:160px;opacity:1;visibility:visible;padding-bottom:8px;
  }
  .bs-actions .bs-btn{display:inline-flex;flex:1 1 0;min-width:0}
  .bs-progress{left:20px;right:20px;bottom:5px}
  .bs-footer__grid{gap:32px var(--gut)}
  .bs-footer__brand,.bs-footer__contact{grid-column:span 12}
  .bs-footer__col{grid-column:span 6}
}
@media (max-width:640px){
  .bs-wrap,.bs-footer__inner{width:calc(100% - 32px)}
  .bs-grid{grid-template-columns:repeat(6,minmax(0,1fr))}
  .bs-footer__col{grid-column:span 12}
  .bs-footer__base{flex-direction:column;align-items:flex-start}
  .bs-actions{flex-wrap:wrap}
  .bs-actions .bs-btn{flex:1 1 100%}
  .bs-annot{display:none}
  .bs-table{font-size:14px}
  .bs-table th,.bs-table td{padding:9px 10px}
}

/* ---------- 12. 减少动态 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .bs-brand__lamp{animation:none}
  .bs-js [data-reveal]{opacity:1;transform:none;transition:none}
  .bs-card:hover,.bs-card:focus-within,.bs-btn:hover{transform:none}
}