:root{
  --pitch-deep:#08170F;
  --pitch-mid:#0F2A1D;
  --volt:#C8F53F;
  --electric:#33D6FF;
  --pulse:#FF5C2B;
  --ink:#F3F8F5;
  --ink-soft:#C9D8D0;
  --muted:#8FA79B;
  --muted-dim:rgba(143,167,155,.72);
  --glass:#E9FFF5;
  --graphite:#4A5C55;
  --deep:#04100B;
  --font-display:"Arial Narrow","Liberation Sans Narrow","Haettenschweiler","Noto Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","Cascadia Mono","Noto Sans Mono",Menlo,Consolas,monospace;
  --wrap:1220px;
  --gut:clamp(16px,4vw,40px);
  --pill:999px;
  --cut:14px;
  --line:rgba(233,255,245,.12);
  --line-strong:rgba(233,255,245,.2);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:112px}
body{
  margin:0;
  background-color:var(--pitch-deep);
  background-image:repeating-linear-gradient(90deg,rgba(233,255,245,.022) 0 1px,transparent 1px 44px);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.25;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--electric);text-decoration:none}
a:hover{color:#84E8FF}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--electric);outline-offset:3px;border-radius:6px}
::selection{background:var(--volt);color:#07150E}

/* ---------- 通用容器与节奏 ---------- */
.bw-wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut)}
.bw-section{padding-block:clamp(40px,7vw,96px)}
.bw-section--mid{background:var(--pitch-mid);border-block:1px solid rgba(233,255,245,.08)}
.bw-section__head{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px 22px;margin-bottom:clamp(18px,3vw,34px)}
.bw-eyebrow{margin:0;font-family:var(--font-mono);font-size:11px;line-height:1.3;letter-spacing:.2em;text-transform:uppercase;color:var(--volt)}
.bw-display{margin:0;font-family:var(--font-display);font-weight:800;font-stretch:condensed;font-size:clamp(44px,9vw,120px);line-height:.92;letter-spacing:-.02em;color:var(--ink)}
.bw-display--md{font-size:clamp(30px,5.6vw,72px)}
.bw-lead{margin:0;max-width:68ch;font-size:clamp(16px,1.5vw,20px);line-height:1.75;color:var(--ink-soft)}
.bw-index{margin:0;font-family:var(--font-mono);font-size:12px;line-height:1.3;letter-spacing:.04em;color:var(--muted)}
.bw-mono{font-family:var(--font-mono);font-size:.94em;letter-spacing:.01em}
.bw-rule{height:1px;margin:clamp(22px,4vw,46px) 0;border:0;background:var(--line)}
.bw-grid{display:grid;gap:clamp(16px,2.6vw,32px)}
.bw-grid--halves{grid-template-columns:repeat(2,minmax(0,1fr))}
.bw-grid--thirds{grid-template-columns:repeat(3,minmax(0,1fr))}
.bw-grid--split{grid-template-columns:minmax(0,2fr) minmax(0,1fr)}
.bw-grid--split-rev{grid-template-columns:minmax(0,1fr) minmax(0,2fr)}

/* ---------- 层级：玻璃浮层与实色内容层 ---------- */
.bw-panel{
  position:relative;
  padding:clamp(16px,2.4vw,26px);
  background:rgba(233,255,245,.07);
  border:1px solid var(--line);
  border-radius:14px;
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
}
.bw-slab{
  position:relative;
  padding:clamp(16px,2.4vw,26px);
  background:var(--pitch-mid);
  border:1px solid rgba(233,255,245,.1);
  border-radius:8px;
}
.bw-cut{--cut:14px;border-radius:0;clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%)}

/* ---------- 标签、数据与状态 ---------- */
.bw-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:4px;
  font-family:var(--font-mono);font-size:11px;line-height:1.3;letter-spacing:.06em;
  background:rgba(74,92,85,.35);color:var(--ink-soft);border:1px solid var(--line);
}
.bw-tag--volt{background:rgba(200,245,63,.15);color:var(--volt);border-color:rgba(200,245,63,.42)}
.bw-tag--electric{background:rgba(51,214,255,.14);color:var(--electric);border-color:rgba(51,214,255,.42)}
.bw-tag--pulse{background:rgba(255,92,43,.16);color:#FF8A62;border-color:rgba(255,92,43,.46)}
.bw-stat{display:flex;flex-direction:column;gap:6px}
.bw-stat__value{font-family:var(--font-display);font-weight:800;font-stretch:condensed;font-size:clamp(28px,4.4vw,44px);line-height:1;color:var(--volt);letter-spacing:-.01em}
.bw-stat__unit{margin-left:6px;font-family:var(--font-mono);font-size:12px;font-weight:400;color:var(--muted)}
.bw-stat__label{font-size:13px;line-height:1.3;color:var(--muted)}
.bw-empty{
  display:grid;gap:8px;place-items:start;
  padding:clamp(20px,3vw,32px);
  border:1px dashed var(--graphite);
  border-radius:10px;
  color:var(--muted);
  font-size:14px;
  line-height:1.75;
}
.bw-empty .bw-tag--pulse{align-self:start}

/* ---------- 按钮 ---------- */
.bw-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border-radius:var(--pill);
  border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.3;text-decoration:none;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .18s ease;
}
.bw-btn:hover{text-decoration:none}
.bw-btn--solid{background:var(--volt);color:#07150E}
.bw-btn--solid:hover{background:#DCFF6B;color:#07150E;transform:translateY(-1px)}
.bw-btn--ghost{border-color:rgba(233,255,245,.24);color:var(--ink)}
.bw-btn--ghost:hover{border-color:var(--electric);color:var(--electric)}
.bw-btn--pulse{background:rgba(255,92,43,.16);color:#FF8A62;border-color:rgba(255,92,43,.46)}
.bw-btn--pulse:hover{background:rgba(255,92,43,.28);color:#FFB199}

/* ---------- 面包屑 ---------- */
.bw-breadcrumb{font-size:13px;line-height:1.6}
.bw-breadcrumb__list{display:flex;flex-wrap:wrap;gap:4px 10px;font-family:var(--font-mono)}
.bw-breadcrumb__item{display:flex;align-items:center;gap:10px;color:var(--muted)}
.bw-breadcrumb__item + .bw-breadcrumb__item::before{content:"/";color:var(--graphite)}
.bw-breadcrumb__item[aria-current="page"]{color:var(--ink)}
.bw-breadcrumb__link{color:var(--muted)}
.bw-breadcrumb__link:hover{color:var(--electric)}

/* ---------- 图片容器（页面阶段放置占位或实拍） ---------- */
.bw-media{
  position:relative;display:block;overflow:hidden;isolation:isolate;
  background:var(--pitch-mid);
  border:1px solid var(--line);
  border-radius:10px;
}
.bw-media::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:
    repeating-linear-gradient(0deg,rgba(51,214,255,.07) 0 1px,transparent 1px 28px),
    repeating-linear-gradient(90deg,rgba(51,214,255,.07) 0 1px,transparent 1px 28px);
}
.bw-media--16x9{aspect-ratio:16/9}
.bw-media--4x3{aspect-ratio:4/3}
.bw-media--1x1{aspect-ratio:1/1}
.bw-media--21x9{aspect-ratio:21/9}
.bw-media--cut{--cut:18px;border-radius:0;clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%)}
.bw-media__img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover;filter:saturate(1.05) contrast(1.04)}
.bw-media__veil{position:absolute;inset:0;z-index:2;background:rgba(8,23,15,.42);pointer-events:none}
.bw-media__cap{
  position:absolute;left:14px;bottom:12px;z-index:3;
  padding:5px 9px;
  font-family:var(--font-mono);font-size:11px;line-height:1.3;letter-spacing:.06em;
  color:var(--ink);background:rgba(4,16,11,.72);border:1px solid var(--line);
}
.bw-arc{position:relative}
.bw-arc::after{
  content:"";position:absolute;top:0;right:0;width:min(240px,40vw);aspect-ratio:1;
  border:1px solid rgba(51,214,255,.28);border-radius:50%;
  border-right-color:transparent;border-bottom-color:transparent;
  pointer-events:none;
}

/* ---------- 显现动效协议 ---------- */
[data-js="on"] [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .5s ease-out,transform .5s ease-out}
[data-js="on"] [data-reveal].is-in{opacity:1;transform:none}

/* ---------- 页头：悬浮玻璃浮岛 ---------- */
.bw-skip{
  position:absolute;left:16px;top:-90px;z-index:95;
  padding:10px 18px;border-radius:6px;
  background:var(--volt);color:#07150E;font-size:14px;font-weight:700;
  transition:top .18s ease;
}
.bw-skip:focus{top:12px;color:#07150E}
.bw-header{
  position:sticky;top:0;z-index:60;
  padding:14px var(--gut) 12px;
  transition:padding .28s ease;
}
.bw-header[data-condensed="true"]{padding-top:6px;padding-bottom:8px}
.bw-isle{
  position:relative;
  display:flex;align-items:center;gap:clamp(8px,1.6vw,22px);
  max-width:var(--wrap);margin-inline:auto;
  padding:9px 10px 9px 16px;
  background:rgba(233,255,245,.075);
  border:1px solid var(--line);
  border-radius:var(--pill);
  box-shadow:0 18px 44px rgba(2,10,7,.5);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  transition:background .28s ease,border-color .28s ease,padding .28s ease;
}
.bw-header[data-condensed="true"] .bw-isle{
  padding:5px 8px 5px 14px;
  background:rgba(8,23,15,.86);
  border-color:rgba(200,245,63,.22);
}
.bw-brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);text-decoration:none}
.bw-brand:hover{color:var(--ink)}
.bw-brand__mark{
  display:grid;place-items:center;width:34px;height:34px;border-radius:50%;
  background:var(--volt);color:#07150E;
  font-family:var(--font-display);font-weight:800;font-size:18px;line-height:1;
  box-shadow:0 0 0 3px rgba(200,245,63,.14);
}
.bw-brand__text{display:flex;flex-direction:column;gap:2px;line-height:1.15}
.bw-brand__name{font-size:15px;font-weight:700;letter-spacing:.06em}
.bw-brand__sub{font-family:var(--font-mono);font-size:11px;line-height:1.3;color:var(--muted);letter-spacing:.02em}
.bw-header[data-condensed="true"] .bw-brand__sub{display:none}
.bw-nav{flex:1 1 auto;min-width:0;overflow-x:auto;-ms-overflow-style:none;scrollbar-width:none}
.bw-nav::-webkit-scrollbar{display:none}
.bw-nav__list{display:flex;align-items:center;gap:2px}
.bw-nav__item{flex:0 0 auto}
.bw-nav__link{
  display:block;padding:8px 13px;border-radius:var(--pill);
  font-size:14px;line-height:1.3;color:var(--muted);white-space:nowrap;text-decoration:none;
  transition:color .2s ease,background .2s ease;
}
.bw-nav__link:hover{color:var(--ink);background:rgba(233,255,245,.08)}
.bw-nav__link[aria-current="page"]{background:var(--volt);color:#07150E;font-weight:600}
.bw-header__actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;margin-left:auto}
.bw-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:var(--pill);
  border:1px solid transparent;
  font-size:13px;font-weight:600;line-height:1.3;white-space:nowrap;text-decoration:none;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.bw-chip:hover{text-decoration:none}
.bw-chip--ghost{color:var(--ink);border-color:rgba(233,255,245,.22);background:rgba(233,255,245,.05)}
.bw-chip--ghost:hover{border-color:var(--electric);color:var(--electric)}
.bw-chip--accent{color:var(--electric);background:rgba(51,214,255,.14);border-color:rgba(51,214,255,.42)}
.bw-chip--accent:hover{background:var(--electric);color:#04100B;border-color:var(--electric)}
.bw-nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--pill);
  border:1px solid rgba(200,245,63,.4);
  background:rgba(200,245,63,.1);color:var(--volt);
  font-size:13px;font-weight:600;line-height:1.3;cursor:pointer;
}
.bw-nav-toggle__bars{position:relative;display:block;width:16px;height:2px;background:currentColor;transition:background .18s ease}
.bw-nav-toggle__bars::before,
.bw-nav-toggle__bars::after{content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;transition:transform .2s ease}
.bw-nav-toggle__bars::before{top:-5px}
.bw-nav-toggle__bars::after{top:5px}
.bw-header[data-open="true"] .bw-nav-toggle__bars{background:transparent}
.bw-header[data-open="true"] .bw-nav-toggle__bars::before{transform:translateY(5px) rotate(45deg)}
.bw-header[data-open="true"] .bw-nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg)}
.bw-drawer{display:none}
.bw-header[data-open="true"] .bw-drawer{
  display:block;
  position:absolute;left:var(--gut);right:var(--gut);top:calc(100% - 2px);
  max-height:min(72vh,560px);overflow:auto;
  padding:14px;
  background:rgba(8,23,15,.97);
  border:1px solid rgba(200,245,63,.24);
  border-radius:18px;
  box-shadow:0 26px 60px rgba(2,10,7,.62);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
}
.bw-drawer__list{display:grid;gap:4px}
.bw-drawer__link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 14px;border-radius:12px;
  border:1px solid transparent;
  color:var(--ink);font-size:15px;text-decoration:none;
  transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.bw-drawer__link::after{content:"↗";font-family:var(--font-mono);font-size:12px;color:var(--muted)}
.bw-drawer__link:hover{background:rgba(233,255,245,.06);border-color:var(--line-strong)}
.bw-drawer__link[aria-current="page"]{background:rgba(200,245,63,.12);border-color:rgba(200,245,63,.38);color:var(--volt)}
.bw-drawer__link[aria-current="page"]::after{color:var(--volt)}
.bw-drawer__foot{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;padding-top:12px;border-top:1px solid var(--line)}
.bw-drawer__meta{margin:12px 2px 2px;font-family:var(--font-mono);font-size:11px;line-height:1.5;color:var(--muted)}
.bw-progress{
  position:absolute;left:var(--gut);right:var(--gut);bottom:2px;height:2px;
  border-radius:2px;background:rgba(74,92,85,.4);overflow:hidden;
}
.bw-progress__bar{
  display:block;width:100%;height:100%;
  background:linear-gradient(90deg,var(--volt),var(--electric) 62%,var(--pulse));
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .12s linear;
}

/* ---------- 页脚：深蓝黑收尾条带 ---------- */
.bw-footer{margin-top:clamp(48px,8vw,110px);background:var(--deep);border-top:1px solid rgba(200,245,63,.2)}
.bw-footer::before{
  content:"";display:block;height:4px;
  background:repeating-linear-gradient(90deg,var(--volt) 0 26px,var(--electric) 26px 52px,var(--pulse) 52px 66px,transparent 66px 118px);
  opacity:.55;
}
.bw-footer__inner{
  display:grid;grid-template-columns:minmax(240px,1fr) minmax(0,2fr);
  gap:clamp(24px,5vw,64px);
  padding-block:clamp(36px,6vw,72px);
}
.bw-footer__brand .bw-brand{margin-bottom:14px}
.bw-footer__brand .bw-brand__mark{background:transparent;border:1px solid rgba(200,245,63,.5);color:var(--volt);box-shadow:none}
.bw-footer__brand .bw-brand__sub{display:block}
.bw-footer__tagline{margin:0;max-width:34ch;font-size:14px;line-height:1.75;color:var(--muted)}
.bw-footer__cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(148px,1fr));gap:clamp(18px,3vw,32px)}
.bw-footer__title{
  margin:0 0 12px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;line-height:1.3;
  letter-spacing:.16em;text-transform:uppercase;color:var(--volt);
}
.bw-footer__list{display:grid;gap:8px}
.bw-footer__link{
  display:inline-block;
  padding-bottom:1px;
  border-bottom:1px solid transparent;
  color:var(--ink-soft);font-size:14px;line-height:1.6;text-decoration:none;
  transition:color .2s ease,border-color .2s ease;
}
.bw-footer__link:hover{color:var(--electric);border-bottom-color:var(--electric)}
.bw-footer__bar{background:rgba(8,23,15,.92);border-top:1px solid rgba(233,255,245,.08)}
.bw-footer__bar-inner{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px 26px;
  padding-block:16px;
  font-size:12px;line-height:1.6;
}
.bw-footer__legal{margin:0;font-family:var(--font-mono);color:var(--muted)}
.bw-footer__copy{margin:0;color:var(--muted)}
.bw-footer__note{margin:0;color:var(--muted-dim)}

/* ---------- 断点 ---------- */
@media (max-width:1140px){
  .bw-nav{display:none}
  .bw-nav-toggle{display:inline-flex}
  .bw-header__actions{margin-left:auto}
}
@media (min-width:1141px){
  .bw-drawer{display:none}
  .bw-header[data-open="true"] .bw-drawer{display:none}
}
@media (max-width:980px){
  .bw-grid--split,.bw-grid--split-rev{grid-template-columns:minmax(0,1fr)}
  .bw-grid--thirds{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:860px){
  .bw-grid--halves{grid-template-columns:minmax(0,1fr)}
  .bw-footer__inner{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:640px){
  .bw-brand__sub{display:none}
  .bw-chip--ghost{display:none}
  .bw-header{padding-inline:12px}
  .bw-header[data-open="true"] .bw-drawer{left:12px;right:12px}
  .bw-progress{left:12px;right:12px}
  .bw-grid--thirds{grid-template-columns:minmax(0,1fr)}
  .bw-display{font-size:clamp(38px,13vw,64px)}
}

/* ---------- 无障碍与动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    transition-delay:0ms !important;
  }
  [data-js="on"] [data-reveal]{opacity:1 !important;transform:none !important}
}