/* ============================================================
   博奥体育登录 · 共享外壳样式 /assets/site.css
   深蓝绿 / 酒红 / 靛紫 珠宝色分区 · 玻璃层与实色层并置
   ============================================================ */

/* ---------- 1. reset ---------- */
*,
*::before,
*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
img,svg,video{max-width:100%;display:block}
h1,h2,h3,h4,h5,p,ul,ol,dl,dd,dt,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0}
a{color:inherit}
table{border-collapse:collapse;width:100%}

/* ---------- 2. 变量 ---------- */
:root{
  --brick:#A63A2E;
  --brick-deep:#7A2A21;
  --harbor:#0E2A47;
  --harbor-2:#1B4A73;
  --neon:#2FE08A;
  --amber:#D9A03C;
  --indigo:#43326B;
  --sand:#F6EFE4;
  --paper:#FFFDF8;
  --ink:#171A1F;
  --mist:#5C6B7A;
  --glass:rgba(255,255,255,.08);
  --line:rgba(255,255,255,.14);

  --font-head:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --rail-w:88px;
  --bar-h:64px;
  --wrap:1280px;
  --gutter:40px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
html[data-rail="open"]{--rail-w:248px}

html{-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
}

/* ---------- 3. 中文排版基座 ---------- */
body{
  background:var(--sand);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  padding-left:var(--rail-w);
  padding-top:var(--bar-h);
  transition:padding-left .26s var(--ease);
  min-height:100vh;
}
body.bo-nav-lock{overflow:hidden}
::selection{background:var(--brick);color:#fff}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px}
.bo-sr{
  position:absolute;width:1px;height:1px;margin:-1px;padding:0;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);
  white-space:nowrap;border:0;
}

/* ---------- 4. 跳转链 ---------- */
.bo-skip{
  position:fixed;left:14px;top:14px;z-index:200;
  display:inline-block;padding:10px 18px;border-radius:10px;
  background:var(--paper);color:var(--ink);font-weight:700;font-size:14px;
  text-decoration:none;box-shadow:0 16px 34px -16px rgba(0,0,0,.6);
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.bo-skip:focus{transform:translateY(0)}

/* ---------- 5. 头部 · 纵向信号轨道 ---------- */
.bo-head{position:relative;z-index:60}

.bo-rail{
  position:fixed;top:0;left:0;bottom:0;z-index:60;
  width:var(--rail-w);
  display:flex;flex-direction:column;
  background:linear-gradient(180deg,#0E2A47 0%,#0B2137 76%,#0A1B2C 100%);
  border-right:1px solid rgba(217,160,60,.22);
  overflow:hidden;
  transition:width .26s var(--ease);
}
.bo-rail::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(158deg,rgba(47,224,138,.09),transparent 38%),
    linear-gradient(20deg,rgba(166,58,46,.22),transparent 48%);
}

.bo-rail__brand{
  position:relative;z-index:1;flex:none;
  display:flex;align-items:center;gap:12px;
  padding:18px 16px;
  color:#fff;text-decoration:none;
  border-bottom:1px solid rgba(255,255,255,.09);
}
.bo-rail__mark{
  flex:none;width:44px;height:44px;display:grid;place-items:center;
  border-radius:12px;background:linear-gradient(145deg,#A63A2E,#7A2A21);
  font-family:var(--font-head);font-weight:900;font-size:20px;color:#FFF3EC;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.18),0 12px 22px -16px rgba(0,0,0,.9);
}
.bo-rail__wordmark{
  display:flex;flex-direction:column;gap:2px;
  white-space:nowrap;overflow:hidden;
  opacity:0;transition:opacity .2s var(--ease) .05s;
}
.bo-rail__wordmark strong{
  font-family:var(--font-head);font-weight:900;font-size:16px;
  line-height:1.2;letter-spacing:.02em;
}
.bo-rail__wordmark em{
  font-family:var(--font-mono);font-style:normal;font-size:11px;
  letter-spacing:.16em;color:var(--amber);text-transform:uppercase;
}
html[data-rail="open"] .bo-rail__wordmark{opacity:1}

.bo-rail__toggle{
  position:relative;z-index:1;flex:none;
  display:flex;align-items:center;justify-content:center;
  margin:12px 14px 4px;padding:8px;
  border:1px solid rgba(255,255,255,.14);border-radius:12px;
  background:var(--glass);color:#CBD9E7;cursor:pointer;
  font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;
  transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.bo-rail__toggle:hover{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(217,160,60,.5)}
.bo-rail__toggle-icon{position:relative;flex:none;width:20px;height:20px}
.bo-rail__toggle-icon::before,
.bo-rail__toggle-icon::after{
  content:"";position:absolute;left:2px;right:2px;height:2px;
  border-radius:2px;background:var(--amber);
  transition:transform .22s var(--ease);
}
.bo-rail__toggle-icon::before{top:6px}
.bo-rail__toggle-icon::after{top:12px}
html[data-rail="open"] .bo-rail__toggle{justify-content:flex-start;gap:12px;margin:14px 14px 4px}
html[data-rail="open"] .bo-rail__toggle-icon::before{transform:translateY(3px) rotate(45deg)}
html[data-rail="open"] .bo-rail__toggle-icon::after{transform:translateY(-3px) rotate(-45deg)}
.bo-rail__toggle-label{opacity:0;transition:opacity .18s var(--ease)}
html[data-rail="open"] .bo-rail__toggle-label{opacity:1}

.bo-rail__nav{
  position:relative;z-index:1;
  flex:1 1 auto;min-height:0;
  padding:10px 0;
  overflow-y:auto;overflow-x:hidden;
}
.bo-rail__list{display:flex;flex-direction:column;gap:2px}
.bo-rail__link{
  display:grid;grid-template-columns:30px minmax(0,1fr);align-items:center;
  padding:11px 10px 11px 16px;
  color:#AFC3D6;text-decoration:none;
  border-left:3px solid transparent;
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.bo-rail__link:hover{color:#fff;background:rgba(255,255,255,.07)}
.bo-rail__link[aria-current="page"]{
  color:#fff;
  background:linear-gradient(90deg,rgba(166,58,46,.85),rgba(166,58,46,.06));
  border-left-color:var(--amber);
}
.bo-rail__num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:12px;letter-spacing:.06em;color:var(--amber);opacity:.85;
}
.bo-rail__link[aria-current="page"] .bo-rail__num{opacity:1}
.bo-rail__label{
  white-space:nowrap;overflow:hidden;
  font-size:15px;font-weight:600;
  opacity:0;transition:opacity .18s var(--ease) .04s;
}
html[data-rail="open"] .bo-rail__label{opacity:1}

.bo-rail__cta{display:none}

.bo-rail__foot{
  position:relative;z-index:1;flex:none;
  display:flex;align-items:center;gap:8px;
  padding:14px 16px 18px;
  border-top:1px solid rgba(255,255,255,.09);
  font-size:11px;white-space:nowrap;overflow:hidden;
}
.bo-rail__foot-key{
  font-family:var(--font-mono);font-weight:700;
  font-size:11px;letter-spacing:.08em;color:#9EB4C9;
}
.bo-rail__foot-more{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;
  color:#7E97AF;opacity:0;transition:opacity .18s var(--ease);
}
html[data-rail="open"] .bo-rail__foot-more{opacity:1}

.bo-dot{
  flex:none;width:8px;height:8px;border-radius:50%;
  background:var(--neon);
  animation:bo-breathe 3s ease-in-out infinite;
}
@keyframes bo-breathe{
  0%,100%{box-shadow:0 0 0 0 rgba(47,224,138,.55)}
  50%{box-shadow:0 0 0 8px rgba(47,224,138,0)}
}

/* ---------- 6. 头部 · 顶部信号状态带 ---------- */
.bo-signal{
  position:fixed;top:0;left:var(--rail-w);right:0;z-index:55;
  height:var(--bar-h);
  display:flex;align-items:center;gap:12px;
  padding:0 22px;
  background:linear-gradient(90deg,rgba(10,27,44,.96),rgba(27,74,115,.82));
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(217,160,60,.24);
  color:#D6E2EE;
  transition:left .26s var(--ease);
}
.bo-signal__phase{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;
  background:rgba(47,224,138,.1);
  border:1px solid rgba(47,224,138,.3);
  font-size:12px;font-weight:700;letter-spacing:.06em;
  color:#7DF0B6;white-space:nowrap;
}
.bo-signal__path{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
  color:#7E97AF;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.bo-signal__spacer{flex:1 1 auto}

/* ---------- 7. 按钮 ---------- */
.bo-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:9px 18px;border-radius:999px;border:1px solid transparent;
  font-family:var(--font-body);font-size:14px;font-weight:700;line-height:1.3;
  letter-spacing:.02em;text-decoration:none;cursor:pointer;white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),
             border-color .18s var(--ease),transform .18s var(--ease);
}
.bo-btn--entry{background:var(--brick);color:#FFF4EF}
.bo-btn--entry:hover{background:var(--brick-deep);transform:translateY(-1px)}
.bo-btn--amber{background:rgba(217,160,60,.12);color:var(--amber);border-color:rgba(217,160,60,.42)}
.bo-btn--amber:hover{background:rgba(217,160,60,.24);color:#F0C069}
.bo-btn--ghost{background:transparent;border-color:rgba(255,255,255,.24);color:#DCE7F1}
.bo-btn--ghost:hover{border-color:#fff;color:#fff}
.bo-btn--ink{background:var(--harbor);color:#EAF1F8}
.bo-btn--ink:hover{background:var(--harbor-2)}

/* ---------- 8. 汉堡与进度 ---------- */
.bo-burger{
  display:none;
  width:44px;height:44px;border-radius:12px;
  align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);cursor:pointer;
  transition:background .18s var(--ease),border-color .18s var(--ease);
}
.bo-burger:hover{background:rgba(255,255,255,.14);border-color:rgba(217,160,60,.5)}
.bo-burger__lines{
  position:relative;width:20px;height:2px;border-radius:2px;
  background:#E7EFF7;
  transition:background .18s var(--ease);
}
.bo-burger__lines::before,
.bo-burger__lines::after{
  content:"";position:absolute;left:0;width:20px;height:2px;
  border-radius:2px;background:#E7EFF7;
  transition:transform .2s var(--ease);
}
.bo-burger__lines::before{top:-6px}
.bo-burger__lines::after{top:6px}
.bo-burger[aria-expanded="true"] .bo-burger__lines{background:transparent}
.bo-burger[aria-expanded="true"] .bo-burger__lines::before{transform:translateY(6px) rotate(45deg)}
.bo-burger[aria-expanded="true"] .bo-burger__lines::after{transform:translateY(-6px) rotate(-45deg)}

.bo-progress{
  position:fixed;bottom:0;left:var(--rail-w);right:0;z-index:70;
  height:3px;pointer-events:none;
  background:linear-gradient(90deg,var(--brick),var(--amber));
  transform:scaleX(var(--sp,0));transform-origin:left center;
  transition:left .26s var(--ease);
}

/* ---------- 9. 通用版式容器 ---------- */
.bo-wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.bo-wrap--narrow{max-width:880px}
.bo-wrap--wide{max-width:1480px}

.bo-breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:18px 0;font-size:13px;color:var(--mist);
}
.bo-breadcrumbs li{display:flex;align-items:center;gap:8px}
.bo-breadcrumbs li + li::before{
  content:"／";font-family:var(--font-mono);color:rgba(166,58,46,.5);
}
.bo-breadcrumbs a{color:var(--mist);text-decoration:none;transition:color .18s var(--ease)}
.bo-breadcrumbs a:hover{color:var(--brick)}
.bo-breadcrumbs [aria-current="page"]{color:var(--ink);font-weight:600}

/* ---------- 10. 分区 ---------- */
.bo-zone{position:relative;padding:88px 0;overflow:hidden}
.bo-zone--tight{padding:56px 0}
.bo-zone--loose{padding:120px 0}
.bo-zone--sand{background:var(--sand);color:var(--ink)}
.bo-zone--paper{background:var(--paper);color:var(--ink)}
.bo-zone--harbor{
  background:linear-gradient(160deg,#0E2A47,#102A44 58%,#0B2036);
  color:#DCE7F1;
}
.bo-zone--indigo{
  background:linear-gradient(150deg,#43326B,#3A2C5E 56%,#2C2149);
  color:#E8E2F5;
}
.bo-zone--brick{
  background:linear-gradient(150deg,#A63A2E,#7A2A21);
  color:#FFF2EC;
}

/* ---------- 11. 文字层次 ---------- */
.bo-kicker{
  display:inline-flex;align-items:center;gap:10px;
  margin:0 0 14px;
  font-family:var(--font-mono);font-size:12px;font-weight:700;
  letter-spacing:.22em;text-transform:uppercase;color:var(--brick);
}
.bo-kicker::before{content:"";width:26px;height:2px;background:currentColor;display:block}
.bo-zone--harbor .bo-kicker,
.bo-zone--indigo .bo-kicker,
.bo-zone--brick .bo-kicker{color:var(--amber)}

.bo-h2{
  font-family:var(--font-head);font-weight:900;
  font-size:clamp(26px,3.2vw,42px);line-height:1.16;
  letter-spacing:-.01em;margin:0 0 16px;
}
.bo-h3{
  font-family:var(--font-head);font-weight:800;
  font-size:clamp(19px,2vw,24px);line-height:1.32;margin:0 0 10px;
}
.bo-lead{font-size:17px;line-height:1.78;color:#46525F;max-width:64ch;margin:0}
.bo-zone--harbor .bo-lead,
.bo-zone--indigo .bo-lead,
.bo-zone--brick .bo-lead{color:#AFC1D3}
.bo-prose{font-size:16.5px;line-height:1.8;color:#2C343D;max-width:70ch}
.bo-prose p + p{margin-top:1em}
.bo-zone--harbor .bo-prose,
.bo-zone--indigo .bo-prose{color:#C4D3E1}
.bo-note{font-size:13px;line-height:1.65;color:var(--mist)}
.bo-zone--harbor .bo-note,
.bo-zone--indigo .bo-note{color:#8FA6BC}
.bo-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.01em}

/* ---------- 12. 卡片与玻璃层 ---------- */
.bo-card{
  position:relative;
  background:var(--paper);border:1px solid #E6DCCB;border-radius:18px;
  padding:26px;
  box-shadow:0 26px 50px -44px rgba(23,26,31,.6);
}
.bo-card--flat{box-shadow:none}
.bo-card--brick{border-top:4px solid var(--brick)}

.bo-glass{
  position:relative;
  background:var(--glass);
  border:1px solid rgba(255,255,255,.16);
  border-radius:18px;padding:24px;
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  color:#E4EEF7;
}

/* ---------- 13. 图片容器（供页面阶段放置） ---------- */
.bo-media{
  position:relative;overflow:hidden;border-radius:16px;
  aspect-ratio:16/10;
  background:linear-gradient(140deg,#1B4A73,#0E2A47 55%,#0A1B2C);
}
.bo-media > img,
.bo-media > picture img,
.bo-media > video{width:100%;height:100%;object-fit:cover}
.bo-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(118deg,rgba(255,255,255,.16),transparent 40%),
    linear-gradient(0deg,rgba(8,20,34,.42),transparent 46%);
}
.bo-media--wide{aspect-ratio:21/9}
.bo-media--tall{aspect-ratio:4/5}
.bo-media--square{aspect-ratio:1/1}
.bo-media__cap{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:14px 16px;font-size:13px;line-height:1.6;color:#E9F1F8;
}

/* ---------- 14. 标签 ---------- */
.bo-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  line-height:1.5;white-space:nowrap;
}
.bo-tag--live{background:rgba(47,224,138,.14);border:1px solid rgba(47,224,138,.36);color:#2FE08A}
.bo-tag--amber{background:rgba(217,160,60,.16);border:1px solid rgba(217,160,60,.42);color:#A87718}
.bo-tag--brick{background:rgba(166,58,46,.1);border:1px solid rgba(166,58,46,.3);color:var(--brick)}
.bo-tag--indigo{background:rgba(67,50,107,.12);border:1px solid rgba(67,50,107,.32);color:#43326B}
.bo-zone--harbor .bo-tag--amber,
.bo-zone--indigo .bo-tag--amber,
.bo-zone--brick .bo-tag--amber{color:var(--amber)}
.bo-zone--harbor .bo-tag--brick,
.bo-zone--indigo .bo-tag--brick,
.bo-zone--brick .bo-tag--brick{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.24);color:#FFF0EA}

/* ---------- 15. 主题筛选按钮 ---------- */
.bo-filter{
  display:flex;flex-wrap:wrap;gap:8px;
  width:fit-content;max-width:100%;
  padding:6px;border-radius:999px;
  border:1px solid rgba(23,26,31,.12);
  background:rgba(255,255,255,.6);
}
.bo-zone--harbor .bo-filter,
.bo-zone--indigo .bo-filter{
  border-color:rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);
}
.bo-filter__btn{
  padding:8px 16px;border-radius:999px;border:1px solid transparent;
  font-size:14px;font-weight:600;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.bo-filter__btn:hover{background:rgba(166,58,46,.12)}
.bo-filter__btn[aria-pressed="true"]{background:var(--brick);border-color:var(--brick);color:#FFF4EF}
.bo-zone--harbor .bo-filter__btn:hover,
.bo-zone--indigo .bo-filter__btn:hover{background:rgba(255,255,255,.12)}

/* ---------- 16. 横向轮次带 ---------- */
.bo-axis{
  display:flex;gap:12px;
  overflow-x:auto;
  padding:6px 4px 18px;
  scroll-snap-type:x proximity;
  scrollbar-width:thin;
}
.bo-axis__node{
  flex:0 0 auto;scroll-snap-align:start;
  min-width:140px;padding:14px 16px;
  border-radius:14px;border:1px solid rgba(255,255,255,.16);
  background:var(--glass);color:#DCE7F1;text-align:left;
  font:inherit;cursor:pointer;
  transition:border-color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
}
.bo-axis__node:hover{border-color:var(--amber);transform:translateY(-2px)}
.bo-axis__node[aria-selected="true"]{border-color:var(--brick);background:rgba(166,58,46,.28)}

/* ---------- 17. 显现与筛选动画 ---------- */
.bo-rise{
  opacity:0;transform:translateY(16px);
  transition:opacity .26s var(--ease),transform .26s var(--ease);
}
.bo-rise.is-in{opacity:1;transform:none}
.is-hidden{display:none !important}
@keyframes bo-pop{
  from{opacity:0;transform:translateY(10px)}
  to{opacity:1;transform:none}
}
.bo-pop{
  animation:bo-pop .24s var(--ease) both;
  animation-delay:var(--stagger,0ms);
}

/* ---------- 18. 页脚 ---------- */
.bo-foot{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#0E2A47 0%,#12213A 46%,#0A1524 100%);
  color:#B9C9D9;
  padding:0 0 28px;
}
.bo-foot::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(118deg,rgba(67,50,107,.5),transparent 46%),
    linear-gradient(300deg,rgba(166,58,46,.24),transparent 42%);
}
.bo-foot__trust{
  position:relative;max-width:var(--wrap);margin:0 auto;
  padding:34px var(--gutter) 30px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.bo-foot__trust p{
  margin:0;max-width:92ch;
  padding-left:14px;border-left:3px solid var(--amber);
  font-size:13.5px;line-height:1.72;color:#9FB4C8;
}
.bo-foot__grid{
  position:relative;max-width:var(--wrap);margin:0 auto;
  padding:46px var(--gutter) 40px;
  display:grid;grid-template-columns:1fr .85fr 1.15fr 1.05fr;gap:36px 40px;
}
.bo-foot__title{
  margin:0 0 16px;padding-bottom:10px;
  border-bottom:1px solid rgba(217,160,60,.22);
  font-family:var(--font-mono);font-size:11.5px;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;color:var(--amber);
}
.bo-foot__list{display:flex;flex-direction:column;gap:10px}
.bo-foot__list a{
  font-size:15px;color:#C4D4E3;text-decoration:none;
  transition:color .18s var(--ease);
}
.bo-foot__list a::before{
  content:"／";margin-right:8px;
  font-family:var(--font-mono);color:rgba(217,160,60,.6);
}
.bo-foot__list a:hover{color:#fff}

.bo-foot__facts{display:flex;flex-direction:column;gap:12px}
.bo-foot__facts > div{
  display:flex;justify-content:space-between;gap:14px;
  padding-bottom:10px;border-bottom:1px dashed rgba(255,255,255,.1);
}
.bo-foot__facts dt{font-size:13px;color:#8FA6BC}
.bo-foot__facts dd{
  margin:0;text-align:right;
  font-family:var(--font-mono);font-size:13px;color:#DCE7F1;
}
.bo-foot__note{font-size:14.5px;line-height:1.78;color:#B3C5D6;max-width:34ch}
.bo-foot__meta{
  margin-top:12px;
  font-family:var(--font-mono);font-size:12px;
  letter-spacing:.08em;color:#7E97AF;
}
.bo-foot__contact{display:flex;flex-direction:column;gap:12px}
.bo-foot__contact p{font-size:14.5px;line-height:1.7;color:#C4D4E3;word-break:break-word}
.bo-foot__contact span{
  display:block;
  font-family:var(--font-mono);font-size:11.5px;
  letter-spacing:.14em;color:#7E97AF;
}
.bo-foot__legal{
  position:relative;max-width:var(--wrap);margin:0 auto;
  padding:20px var(--gutter) 0;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px;
  font-size:13px;color:#8FA6BC;
}
.bo-foot__legal ul{display:flex;flex-wrap:wrap;gap:18px;margin-left:auto}
.bo-foot__legal a{
  color:#B9C9D9;text-decoration:none;
  border-bottom:1px solid rgba(255,255,255,.18);
  padding-bottom:2px;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.bo-foot__legal a:hover{color:#fff;border-color:var(--amber)}

/* ---------- 19. 响应式 ---------- */
@media (max-width:1080px){
  :root{--gutter:28px}
  .bo-foot__grid{grid-template-columns:1fr 1fr;gap:34px}
}

@media (max-width:900px){
  :root{--rail-w:0px;--bar-h:0px;--gutter:20px}
  html[data-rail="open"]{--rail-w:0px}

  body{padding-left:0;padding-top:56px}

  .bo-signal{display:none}

  .bo-rail{
    width:100%;height:56px;
    flex-direction:row;align-items:center;
    padding-right:56px;
    border-right:0;
    border-bottom:1px solid rgba(217,160,60,.3);
    overflow:visible;
  }
  .bo-rail::after{
    background:
      linear-gradient(90deg,rgba(47,224,138,.08),transparent 40%),
      linear-gradient(300deg,rgba(166,58,46,.26),transparent 48%);
  }
  .bo-rail__brand{flex:1 1 auto;padding:8px 14px;border-bottom:0;gap:10px}
  .bo-rail__mark{width:34px;height:34px;font-size:16px;border-radius:10px}
  .bo-rail__wordmark{
    flex-direction:row;align-items:baseline;gap:8px;
    opacity:1;transition:none;
  }
  .bo-rail__wordmark strong{font-size:15px}
  .bo-rail__wordmark em{display:none}
  .bo-rail__toggle{display:none}

  .bo-rail__nav{
    position:fixed;left:0;right:0;top:56px;bottom:0;z-index:65;
    display:flex;flex-direction:column;
    padding:18px 18px 34px;
    overflow-y:auto;
    background:linear-gradient(180deg,#0E2A47,#0A1B2C);
    border-top:1px solid rgba(217,160,60,.22);
    opacity:0;visibility:hidden;transform:translateY(-12px);
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
  }
  .bo-rail__nav[data-open]{opacity:1;visibility:visible;transform:none}

  .bo-rail__list{gap:4px}
  .bo-rail__link{
    grid-template-columns:36px minmax(0,1fr);
    padding:14px;
    border-left:0;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .bo-rail__link[aria-current="page"]{
    border-left:0;
    background:linear-gradient(90deg,rgba(166,58,46,.7),rgba(166,58,46,.05));
  }
  .bo-rail__num{font-size:13px}
  .bo-rail__label{opacity:1;font-size:16px;transition:none}

  .bo-rail__cta{display:flex;flex-direction:column;gap:10px;margin-top:24px}
  .bo-rail__cta .bo-btn{width:100%;padding:13px 18px;font-size:15px}

  .bo-rail__foot{display:none}

  .bo-burger{
    display:inline-flex;
    position:fixed;top:6px;right:8px;z-index:70;
  }

  .bo-progress{left:0}

  .bo-zone{padding:68px 0}
  .bo-zone--loose{padding:88px 0}
}

@media (max-width:600px){
  :root{--gutter:16px}
  body{font-size:16px}
  .bo-zone{padding:56px 0}
  .bo-zone--loose{padding:72px 0}
  .bo-h2{font-size:26px}
  .bo-lead{font-size:16px}
  .bo-card{padding:20px;border-radius:16px}
  .bo-glass{padding:18px;border-radius:16px}
  .bo-foot__grid{grid-template-columns:1fr;gap:30px;padding:36px var(--gutter) 30px}
  .bo-foot__legal{flex-direction:column;align-items:flex-start}
  .bo-foot__legal ul{margin-left:0;gap:14px}
  .bo-filter{width:100%;border-radius:16px}
}

/* ---------- 20. 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .bo-rise{opacity:1;transform:none}
  .bo-dot{box-shadow:none}
  .bo-progress{transition:none}
}