/* =========================================================
   云开赛场 · 共享样式  /assets/site.css
   玄夜底 + 深海蓝板块 + 荧光青锚点 + 暖橙实时态
   ========================================================= */

/* ---------- 1 · 变量 ---------- */
:root{
  --ink:#05080F;
  --board:#0B1424;
  --solid:#132238;
  --glass:rgba(255,255,255,.06);
  --glass-line:rgba(255,255,255,.14);
  --text:#EAF2FF;
  --text-dim:rgba(234,242,255,.80);
  --muted:#8FA3C0;
  --cyan:#00E5D4;
  --orange:#FF8A3D;
  --tag-green:#7CF29B;
  --tag-purple:#A78BFA;
  --tag-gold:#FFD166;
  --tag-magenta:#FF6B9A;
  --danger:#FF5A5F;
  --font-display:'Barlow Condensed','HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-body:'Inter','HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-data:'JetBrains Mono','SFMono-Regular','Menlo','Roboto Mono',monospace;
  --wrap:1280px;
  --gutter:24px;
  --radius:14px;
  --radius-sm:9px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --shadow:0 20px 44px rgba(0,0,0,.5);
  --hdr-top-h:44px;
}

/* ---------- 2 · Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100%;
  background-color:var(--ink);
  background-image:
    radial-gradient(1100px 520px at 10% -12%, rgba(0,229,212,.10), transparent 62%),
    radial-gradient(900px 480px at 98% 2%, rgba(255,138,61,.08), transparent 60%);
  background-repeat:no-repeat;
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0 0 .5em;font-family:var(--font-display);font-weight:600;line-height:1.14;letter-spacing:.02em;color:var(--text)}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--cyan);text-decoration:none;transition:color .15s var(--ease),border-color .15s var(--ease)}
a:hover{text-decoration:underline;text-underline-offset:3px}
img,svg,video{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:0}
[hidden]{display:none!important}
:focus-visible{outline:2px dashed var(--cyan);outline-offset:3px;border-radius:4px}
.no-scroll{overflow:hidden}

/* ---------- 3 · 通用容器与工具 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.v-note{writing-mode:vertical-rl;text-orientation:mixed;font-family:var(--font-data);font-size:11.5px;letter-spacing:.22em;color:var(--muted);text-transform:uppercase}
.skip-link{
  position:absolute;left:20px;top:-70px;z-index:120;
  padding:10px 18px;border-radius:0 0 12px 12px;
  background:var(--cyan);color:#04120F;font-weight:600;font-family:var(--font-display);letter-spacing:.12em;
  transition:top .15s var(--ease);
}
.skip-link:focus{top:0;text-decoration:none}

/* ---------- 4 · 顶部阅读进度 ---------- */
.read-progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:110;pointer-events:none;background:rgba(255,255,255,.05)}
.read-progress__bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--orange));transition:width .1s linear}

/* ---------- 5 · 顶部短提示 ---------- */
.toast-bar{
  position:fixed;left:50%;top:14px;z-index:115;
  max-width:calc(100vw - 40px);
  padding:10px 20px;border-radius:999px;
  background:var(--solid);border:1px solid var(--cyan);
  color:var(--text);font-family:var(--font-data);font-size:13px;letter-spacing:.05em;
  box-shadow:var(--shadow);
  transform:translate(-50%,-160%);
  transition:transform .18s var(--ease),opacity .18s var(--ease);
  opacity:0;
}
.toast-bar.is-on{transform:translate(-50%,0);opacity:1}

/* ---------- 6 · 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(5,8,15,.94);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--glass-line);
}

/* 6.1 上层信号条 */
.hdr-top{
  max-height:var(--hdr-top-h);
  overflow:hidden;
  border-bottom:1px solid var(--glass-line);
  background:
    linear-gradient(90deg, rgba(0,229,212,.12), rgba(11,20,36,.55) 42%, rgba(255,138,61,.12));
  transition:max-height .18s var(--ease),opacity .18s var(--ease),border-color .18s var(--ease);
}
.hdr-top__inner{
  display:flex;align-items:center;gap:20px;
  min-height:var(--hdr-top-h);
}
.hdr-top__brand{
  margin:0;
  font-family:var(--font-display);font-size:12.5px;font-weight:500;
  letter-spacing:.18em;color:var(--text);white-space:nowrap;
}
.hdr-top__status{
  margin:0;display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-data);font-size:12px;letter-spacing:.06em;color:var(--muted);
  white-space:nowrap;
}
.live-dot{
  width:8px;height:8px;border-radius:50%;background:var(--orange);flex:none;
  box-shadow:0 0 0 0 rgba(255,138,61,.55);
  animation:live-breathe 2s ease-in-out infinite;
}
@keyframes live-breathe{
  0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(255,138,61,.5)}
  50%{opacity:.55;box-shadow:0 0 0 6px rgba(255,138,61,0)}
}
.hdr-actions{margin-left:auto;display:flex;align-items:center;gap:10px}

/* 6.2 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:9px 16px;border-radius:999px;
  font-family:var(--font-display);font-size:13px;font-weight:500;
  letter-spacing:.12em;line-height:1.2;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:background .15s var(--ease),color .15s var(--ease),border-color .15s var(--ease),transform .15s var(--ease);
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn--solid{background:var(--cyan);color:#04120F}
.btn--solid:hover{background:#4bf3e7}
.btn--ghost{background:var(--glass);border-color:var(--glass-line);color:var(--text)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--line{background:transparent;border-color:var(--cyan);color:var(--cyan)}
.btn--line:hover{background:rgba(0,229,212,.12)}
.btn--sm{padding:7px 13px;font-size:12px}

/* 6.3 下层品牌与导航 */
.hdr-main__inner{display:flex;align-items:center;gap:24px;min-height:66px}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text);text-decoration:none}
.brand:hover{text-decoration:none}
.brand__mark{width:36px;height:36px;flex:none;display:block}
.brand__mark svg{width:100%;height:100%}
.brand__text{display:flex;flex-direction:column;line-height:1}
.brand__name{font-family:var(--font-display);font-size:22px;font-weight:600;letter-spacing:.10em}
.brand__sub{margin-top:5px;font-family:var(--font-data);font-size:10px;letter-spacing:.2em;color:var(--muted)}

.nav-toggle{
  display:none;margin-left:auto;
  width:46px;height:46px;flex:none;
  align-items:center;justify-content:center;
  border:1px solid var(--glass-line);border-radius:12px;
  background:var(--glass);cursor:pointer;
}
.nav-toggle__icon{position:relative;display:block;width:18px;height:2px;background:var(--text)}
.nav-toggle__icon::before,.nav-toggle__icon::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);
  transition:transform .15s var(--ease),opacity .15s var(--ease);
}
.nav-toggle__icon::before{top:-6px}
.nav-toggle__icon::after{top:6px}
.nav-toggle[aria-expanded="true"] .nav-toggle__icon{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after{transform:translateY(-6px) rotate(-45deg)}

.site-nav{margin-left:auto}
.site-nav__list{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 14px;
  font-family:var(--font-display);font-size:14.5px;font-weight:500;
  letter-spacing:.16em;color:var(--muted);text-decoration:none;
  transition:color .15s var(--ease);
}
.nav-link:hover{color:var(--text);text-decoration:none}
.nav-link[aria-current="page"]{color:var(--text)}
.nav-link[aria-current="page"]::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;
  background:var(--cyan);border-radius:2px;
}

/* 6.4 索引带（全站导航记忆点） */
.index-band{
  border-top:1px solid var(--glass-line);
  background:linear-gradient(90deg, rgba(19,34,56,.65), rgba(5,8,15,.55));
  overflow:hidden;
}
.index-band__track{
  display:flex;align-items:center;gap:10px;
  padding:10px 0;
  overflow-x:auto;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.index-band__track::-webkit-scrollbar{display:none}
.band-item{
  flex:none;display:inline-flex;align-items:center;gap:8px;
  padding:6px 13px;border-radius:999px;
  border:1px solid var(--glass-line);background:var(--solid);
  color:var(--text);text-decoration:none;
  font-family:var(--font-data);font-size:12px;letter-spacing:.06em;
  transition:border-color .15s var(--ease),transform .15s var(--ease),background .15s var(--ease);
}
.band-item:hover{border-color:var(--cyan);background:#16263D;text-decoration:none;transform:translateY(-1px)}
.band-item.is-current{border-color:var(--cyan);box-shadow:inset 0 0 0 1px var(--cyan);transform:scale(1.02)}
.band-item__dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);flex:none}
.band-item__label{white-space:nowrap}
.band-item--lead{border-color:rgba(0,229,212,.55);color:var(--cyan)}
.band-item--meta{color:var(--muted);background:var(--glass);cursor:default}
.dot--cyan{background:var(--cyan)}
.dot--green{background:var(--tag-green)}
.dot--purple{background:var(--tag-purple)}
.dot--gold{background:var(--tag-gold)}
.dot--magenta{background:var(--tag-magenta)}
.dot--orange{background:var(--orange)}
.index-band[data-band-variant="b"] .index-band__track{padding:6px 0;gap:8px}
.index-band[data-band-variant="b"] .band-item{padding:4px 10px;font-size:11.5px}
.index-band[data-band-variant="c"] .band-item--lead{border-color:var(--orange);color:var(--orange)}
.index-band[data-band-variant="c"] .band-item--lead .band-item__dot{background:var(--orange)}

/* 6.5 收起态 */
.site-header.is-compact .hdr-top{max-height:0;opacity:0;border-bottom-color:transparent}
.site-header.is-compact .hdr-main__inner{min-height:58px}

/* ---------- 7 · 主体与章节 ---------- */
.main{display:block}
[data-section]{scroll-margin-top:170px}
.section{padding:72px 0}
.section--tight{padding:44px 0}
.section__head{
  display:flex;align-items:flex-end;gap:20px;flex-wrap:wrap;
  padding-bottom:14px;margin-bottom:28px;
  border-bottom:1px solid var(--glass-line);
}
.section__index{font-family:var(--font-data);font-size:12px;letter-spacing:.16em;color:var(--cyan)}
.section__title{margin:0;font-size:clamp(1.6rem,3vw,2.4rem)}
.section__note{margin:0 0 0 auto;max-width:42ch;color:var(--muted);font-size:14px;text-align:right}

/* ---------- 8 · 网格 ---------- */
.grid{display:grid;gap:var(--gutter)}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}

/* ---------- 9 · 资料卡 / 玻璃层 / 实色层 ---------- */
.card{
  position:relative;
  background:var(--solid);
  border:1px solid var(--glass-line);
  border-radius:var(--radius);
  padding:22px;
}
.card--glass{
  background:var(--glass);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.card__head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.card__title{margin:0;font-size:1.15rem;letter-spacing:.04em}
.card__meta{font-family:var(--font-data);font-size:12px;letter-spacing:.06em;color:var(--muted)}
.card__body{color:var(--text-dim);font-size:15px;line-height:1.75}
.card__foot{margin-top:16px;padding-top:14px;border-top:1px solid var(--glass-line);display:flex;align-items:center;gap:12px;flex-wrap:wrap}

/* ---------- 10 · 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 11px;border-radius:999px;
  border:1px solid currentColor;background:rgba(255,255,255,.04);
  font-family:var(--font-display);font-size:12px;font-weight:500;letter-spacing:.14em;line-height:1.6;
}
.tag--cyan{color:var(--cyan)}
.tag--green{color:var(--tag-green)}
.tag--purple{color:var(--tag-purple)}
.tag--gold{color:var(--tag-gold)}
.tag--magenta{color:var(--tag-magenta)}
.tag--orange{color:var(--orange)}

/* ---------- 11 · 数据方阵 ---------- */
.data-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1px;
  background:var(--glass-line);
  border:1px solid var(--glass-line);border-radius:var(--radius-sm);overflow:hidden;
}
.data-cell{background:var(--board);padding:13px 15px}
.data-cell__k{display:block;font-family:var(--font-display);font-size:12px;letter-spacing:.16em;color:var(--muted)}
.data-cell__v{display:block;margin-top:4px;font-family:var(--font-data);font-size:16px;letter-spacing:.04em;color:var(--text);font-variant-numeric:tabular-nums}

/* ---------- 12 · 面包屑 / 正文 ---------- */
.breadcrumbs{padding:20px 0 4px;font-family:var(--font-data);font-size:12px;letter-spacing:.08em;color:var(--muted)}
.breadcrumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumbs li{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs li+li::before{content:"/";color:var(--cyan)}
.breadcrumbs a{color:var(--muted)}
.breadcrumbs a:hover{color:var(--cyan)}
.breadcrumbs [aria-current="page"]{color:var(--text)}

.prose{max-width:72ch;color:var(--text-dim);font-size:16px;line-height:1.75}
.prose h2{font-size:clamp(1.3rem,2.2vw,1.8rem);margin:1.6em 0 .5em}
.prose h3{font-size:1.1rem;margin:1.4em 0 .4em;color:var(--text)}
.prose strong{color:var(--text);font-weight:600}
.prose code{font-family:var(--font-data);font-size:.92em;background:var(--glass);border:1px solid var(--glass-line);border-radius:6px;padding:1px 6px}

/* ---------- 13 · 图片容器基础规则 ---------- */
.media-frame{
  position:relative;display:block;overflow:hidden;
  border:1px solid var(--glass-line);border-radius:var(--radius);
  background-color:var(--solid);
  background-image:
    linear-gradient(180deg, rgba(19,34,56,.92), rgba(5,8,15,.92)),
    repeating-linear-gradient(90deg, rgba(0,229,212,.10) 0 1px, transparent 1px 30px),
    repeating-linear-gradient(0deg, rgba(0,229,212,.10) 0 1px, transparent 1px 30px);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 72% 18%, rgba(0,229,212,.18), transparent 62%);
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--card{aspect-ratio:4/3}
.media-frame--tall{aspect-ratio:3/4}
.media-frame__caption{
  position:absolute;left:14px;bottom:12px;z-index:2;
  font-family:var(--font-data);font-size:11.5px;letter-spacing:.08em;color:var(--cyan);
}

/* ---------- 14 · 筛选条 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.filter-chip{
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--glass-line);background:var(--glass);
  color:var(--muted);cursor:pointer;
  font-family:var(--font-display);font-size:12.5px;letter-spacing:.14em;
  transition:color .15s var(--ease),border-color .15s var(--ease),background .15s var(--ease);
}
.filter-chip:hover{color:var(--text);border-color:var(--cyan)}
.filter-chip.is-active{color:#04120F;background:var(--cyan);border-color:var(--cyan)}

/* ---------- 15 · 显现动效 ---------- */
html.reveal-ready [data-reveal]{opacity:0;transform:translateY(14px)}
html.reveal-ready [data-reveal].is-inview{
  opacity:1;transform:none;
  transition:opacity .18s var(--ease),transform .18s var(--ease);
}

/* ---------- 16 · 页脚 ---------- */
.site-footer{
  margin-top:72px;
  background:var(--board);
  border-top:1px solid var(--glass-line);
  background-image:linear-gradient(180deg, rgba(0,229,212,.06), transparent 42%);
}
.ftr-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1.5fr;
  gap:36px;padding-top:56px;padding-bottom:36px;
}
.ftr-brand{margin:0 0 12px;font-family:var(--font-display);font-size:21px;letter-spacing:.08em;color:var(--text)}
.ftr-note{margin:0 0 10px;color:var(--muted);font-size:13.5px;line-height:1.7}
.ftr-note--dim{font-family:var(--font-data);font-size:12px;letter-spacing:.08em}
.ftr-col__title{margin:0 0 16px;font-family:var(--font-display);font-size:13px;font-weight:500;letter-spacing:.2em;color:var(--cyan)}
.ftr-list{display:grid;gap:10px}
.ftr-list a{color:var(--muted);font-size:14px}
.ftr-list a:hover{color:var(--cyan)}
.ftr-list--data{gap:14px}
.ftr-key{display:block;font-family:var(--font-display);font-size:11.5px;letter-spacing:.18em;color:var(--muted)}
.ftr-data{display:block;font-family:var(--font-data);font-size:12.5px;letter-spacing:.03em;color:var(--text);word-break:break-all}
.ftr-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-top:18px;padding-bottom:28px;
  border-top:1px solid var(--glass-line);
}
.ftr-legal{margin:0;font-family:var(--font-data);font-size:12px;letter-spacing:.06em;color:var(--muted)}
.ftr-legal a{color:var(--muted)}
.ftr-legal a:hover{color:var(--cyan)}

/* ---------- 17 · 平板 ---------- */
@media (max-width:1024px){
  :root{--gutter:20px}
  .hdr-main__inner{gap:16px}
  .nav-link{padding:10px 10px;font-size:13.5px;letter-spacing:.12em}
  .ftr-grid{grid-template-columns:1fr 1fr;gap:30px}
  .span-3,.span-4,.span-5{grid-column:span 6}
  .span-7,.span-8{grid-column:span 12}
  .section{padding:56px 0}
}

/* ---------- 18 · 移动 ---------- */
@media (max-width:900px){
  .hdr-top__inner{gap:12px}
  .hdr-top__status{display:none}
  .hdr-actions .btn--ghost{display:none}
  .hdr-actions .btn--solid{padding:7px 13px;font-size:12px}
  .hdr-top__brand{font-size:11.5px;letter-spacing:.14em;overflow:hidden;text-overflow:ellipsis}

  .nav-toggle{display:inline-flex}
  .site-nav{
    position:fixed;top:0;right:0;bottom:0;left:auto;
    width:min(86vw,340px);margin:0;
    padding:96px 24px 40px;
    background:rgba(5,8,15,.99);
    border-left:1px solid var(--glass-line);
    box-shadow:var(--shadow);
    transform:translateX(102%);
    visibility:hidden;
    overflow-y:auto;
    z-index:105;
    transition:transform .18s var(--ease),visibility .18s var(--ease);
  }
  .site-nav[data-open]{transform:translateX(0);visibility:visible}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{
    display:block;padding:15px 2px;
    font-size:17px;letter-spacing:.16em;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .nav-link[aria-current="page"]{color:var(--cyan)}
  .nav-link[aria-current="page"]::after{display:none}
  .nav-link[aria-current="page"]::before{
    content:"";display:inline-block;width:14px;height:2px;margin-right:10px;
    vertical-align:middle;background:var(--cyan);
  }
  .index-band__track{padding:8px 0}
}

@media (max-width:720px){
  :root{--gutter:16px}
  body{font-size:15.5px}
  .brand__mark{width:30px;height:30px}
  .brand__name{font-size:19px}
  .brand__sub{display:none}
  .hdr-main__inner{min-height:58px}
  .section{padding:44px 0}
  .section--tight{padding:32px 0}
  .section__note{margin-left:0;text-align:left;max-width:100%}
  .grid--12{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
  .span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-12{grid-column:span 4}
  .card{padding:18px}
  .ftr-grid{grid-template-columns:1fr;gap:26px;padding-top:40px;padding-bottom:28px}
  .ftr-bottom{flex-direction:column;align-items:flex-start}
  .v-note{writing-mode:horizontal-tb;letter-spacing:.16em}
}

/* ---------- 19 · 减少动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .live-dot{animation:none;opacity:1;box-shadow:none}
  html.reveal-ready [data-reveal]{opacity:1;transform:none}
}