/* ============================================================
   安博赛场 · 共享外壳样式
   夜场墨绿底 / 坐标荧光青 / 实时暖橙
   ============================================================ */

:root{
  --ink:#06110E;
  --panel:#0B1F19;
  --zone:#12332A;
  --line:#1E4D3F;
  --cyan:#5FF2D6;
  --cyan-soft:#9BFFE9;
  --orange:#FF9B3D;
  --orange-soft:#FFC46B;
  --text:#E6F5EF;
  --muted:#8FA9A1;
  --alert:#D96459;
  --header-h:64px;
  --rail-w:88px;
  --shell:1180px;
  --shadow:0 30px 70px -50px rgba(0,0,0,.95);
  --font-sans:"Noto Sans SC","Source Han Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-display:"Barlow Condensed","Oswald","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
@media (min-width:1024px){
  :root{ --header-h:72px; }
}

/* ============ 1. Reset ============ */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote{ margin:0; }
ul,ol{ padding:0; list-style:none; }
img,svg,video{ display:block; max-width:100%; }
button,input,select,textarea{ font:inherit; color:inherit; }
button{ background:none; border:0; padding:0; cursor:pointer; }
a{ color:inherit; text-decoration:none; }

/* ============ 2. Base ============ */
body{
  min-height:100vh;
  padding-top:var(--header-h);
  padding-left:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.65;
  color:var(--text);
  background-color:var(--ink);
  background-image:
    radial-gradient(1200px 620px at 88% -12%, rgba(95,242,214,.10), transparent 62%),
    radial-gradient(900px 520px at -8% 108%, rgba(255,155,61,.07), transparent 66%),
    linear-gradient(to right, rgba(30,77,63,.20) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30,77,63,.20) 1px, transparent 1px);
  background-size:auto,auto,96px 96px,96px 96px;
  background-attachment:fixed,fixed,fixed,fixed;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
@media (min-width:1024px){
  body{ padding-left:var(--rail-w); }
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.08;
  letter-spacing:.01em;
}
h1{ font-size:clamp(2.35rem,6vw,4.4rem); }
h2{ font-size:clamp(1.5rem,2.8vw,2.2rem); }
h3{ font-size:1.15rem; line-height:1.3; }
p{ max-width:68ch; }

::selection{ background:rgba(95,242,214,.32); color:#F4FFFB; }

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
}
a:focus:not(:focus-visible),
button:focus:not(:focus-visible){ outline:none; }
#main-content:focus{ outline:none; }

/* ============ 3. 通用容器 ============ */
.wrap{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:20px;
}
@media (min-width:768px){
  .wrap{ padding-inline:32px; }
}
@media (min-width:1280px){
  .wrap{ padding-inline:40px; }
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:600;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{
  content:"";
  width:24px;
  height:1px;
  background:var(--cyan);
  box-shadow:0 0 8px rgba(95,242,214,.7);
}

/* ============ 4. 按钮 / 标签 / 面板 / 网格 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:46px;
  padding:12px 24px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.04em;
  border:1px solid transparent;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease;
  -webkit-tap-highlight-color:transparent;
}
.btn:hover{ transform:translateY(-2px); }
.btn--primary{
  background:var(--cyan);
  color:#04120E;
  box-shadow:0 16px 40px -26px rgba(95,242,214,.9);
}
.btn--primary:hover{ background:var(--cyan-soft); }
.btn--ghost{
  border-color:var(--line);
  color:var(--text);
  background:rgba(18,51,42,.30);
}
.btn--ghost:hover{
  border-color:var(--cyan);
  color:var(--cyan);
  background:rgba(95,242,214,.08);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 9px;
  border:1px solid var(--line);
  background:rgba(6,17,14,.55);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--muted);
}
.tag--live{
  color:var(--orange-soft);
  border-color:rgba(255,155,61,.42);
  background:rgba(255,155,61,.10);
}
.tag--live::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--orange);
  box-shadow:0 0 8px var(--orange);
}

.panel{
  position:relative;
  padding:24px;
  border:1px solid var(--line);
  background:linear-gradient(158deg,rgba(18,51,42,.62),rgba(11,31,25,.88));
  box-shadow:var(--shadow);
}
.panel::after{
  content:"";
  position:absolute;
  top:-1px;
  left:24px;
  width:46px;
  height:2px;
  background:var(--cyan);
  opacity:.85;
  pointer-events:none;
}

.grid{ display:grid; gap:20px; }
.grid--2{ grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); }
.grid--3{ grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); }

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.10em;
  color:var(--muted);
}
.breadcrumb a{ color:var(--muted); transition:color .2s ease; }
.breadcrumb a:hover,
.breadcrumb a:focus-visible{ color:var(--cyan); }
.breadcrumb [aria-current="page"]{ color:var(--cyan-soft); }

/* 可复用图片容器：页面阶段放入 img 即可 */
.media-frame{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16 / 9;
  background-color:var(--panel);
  background-image:
    linear-gradient(135deg,rgba(18,51,42,.90),rgba(6,17,14,.96)),
    repeating-linear-gradient(90deg,rgba(95,242,214,.10) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(0deg,rgba(95,242,214,.10) 0 1px,transparent 1px 48px);
}
.media-frame--wide{ aspect-ratio:21 / 9; }
.media-frame--square{ aspect-ratio:1 / 1; }
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  border:1px solid rgba(95,242,214,.14);
  background:linear-gradient(135deg,rgba(95,242,214,.16),transparent 58%);
  clip-path:polygon(0 0,36% 0,0 36%);
}

/* ============ 5. 头部 ============ */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:400;
  padding:10px 16px;
  background:var(--cyan);
  color:#04120E;
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  transform:translateY(-180%);
  transition:transform .2s ease;
}
.skip-link:focus{ transform:translateY(0); }

.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:120;
}
@media (min-width:1024px){
  .site-header{ left:var(--rail-w); }
}

.header-bar{
  position:relative;
  z-index:130;
  display:flex;
  align-items:center;
  gap:14px;
  min-height:var(--header-h);
  padding:0 16px;
  background:linear-gradient(180deg,rgba(6,17,14,.94),rgba(6,17,14,.26));
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header[data-scrolled] .header-bar{
  background:rgba(6,17,14,.97);
  border-bottom-color:var(--line);
  box-shadow:0 22px 50px -38px rgba(0,0,0,.95);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}

.brand{
  display:grid;
  grid-template-columns:auto auto;
  grid-template-rows:auto auto;
  align-items:center;
  column-gap:10px;
  flex:0 0 auto;
  color:var(--text);
}
.brand-mark{
  position:relative;
  grid-row:1 / span 2;
  width:28px;
  height:28px;
  display:grid;
  place-items:center;
  border:1px solid var(--cyan);
  background:rgba(95,242,214,.06);
}
.brand-mark::before{
  content:"";
  position:absolute;
  inset:4px;
  border:1px solid rgba(95,242,214,.34);
}
.brand-mark::after{
  content:"";
  position:absolute;
  left:-4px;
  right:-4px;
  top:50%;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan),transparent);
  opacity:.7;
}
.brand-mark-dot{
  width:6px;
  height:6px;
  background:var(--orange);
  box-shadow:0 0 12px var(--orange);
}
.brand-name{
  grid-column:2;
  font-family:var(--font-display);
  font-size:19px;
  font-weight:700;
  letter-spacing:.09em;
  line-height:1.1;
  white-space:nowrap;
}
.brand-sub{
  grid-column:2;
  font-family:var(--font-mono);
  font-size:8.5px;
  letter-spacing:.24em;
  color:var(--muted);
  line-height:1.2;
  white-space:nowrap;
}

.header-status{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
  margin-left:auto;
}
.coord-chip{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  padding:5px 9px;
  border:1px solid var(--line);
  background:rgba(18,51,42,.45);
}
.coord-chip-label{
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
}
.coord-chip-value{
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  color:var(--cyan);
  white-space:nowrap;
}
.status-dot{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--orange);
  box-shadow:0 0 0 3px rgba(255,155,61,.16);
  animation:statusPulse 2.8s ease-in-out infinite;
}
.status-text{
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted);
  white-space:nowrap;
}
@keyframes statusPulse{
  0%,100%{ opacity:1; transform:scale(1); }
  50%{ opacity:.55; transform:scale(.86); }
}

.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-left:10px;
  padding:9px 12px;
  border:1px solid var(--line);
  background:rgba(11,31,25,.60);
  color:var(--text);
  transition:background .22s ease,border-color .22s ease,color .22s ease;
  -webkit-tap-highlight-color:transparent;
}
.nav-toggle:hover{ border-color:var(--cyan); color:var(--cyan); }
.nav-toggle-bars{
  display:grid;
  gap:3px;
  width:16px;
}
.nav-toggle-bars span{
  display:block;
  height:1.5px;
  background:currentColor;
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle-text{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
}
.nav-toggle[aria-expanded="true"]{
  background:var(--cyan);
  border-color:var(--cyan);
  color:#04120E;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){ transform:translateY(4.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2){ opacity:0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3){ transform:translateY(-4.5px) rotate(-45deg); }

.reading-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:rgba(30,77,63,.45);
  pointer-events:none;
}
.reading-progress-bar{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--cyan-soft) 55%,var(--orange));
  box-shadow:0 0 12px rgba(95,242,214,.5);
  transition:transform .12s linear;
}

/* ============ 6. 坐标导航（移动端为底部面板） ============ */
.site-nav{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:120;
  display:flex;
  flex-direction:column;
  max-height:86vh;
  overflow-y:auto;
  padding:14px 16px calc(20px + env(safe-area-inset-bottom));
  background:linear-gradient(180deg,var(--panel),var(--ink));
  border-top:1px solid var(--line);
  box-shadow:0 -30px 70px -40px rgba(0,0,0,.90);
  transform:translateY(106%);
  visibility:hidden;
  transition:transform .32s cubic-bezier(.22,.8,.28,1),visibility .32s;
}
.site-nav[data-open]{
  transform:translateY(0);
  visibility:visible;
}

.nav-head{
  display:flex;
  align-items:center;
  gap:10px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.nav-head-coord{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.20em;
  color:var(--cyan);
}
.nav-head-label{
  font-size:12px;
  letter-spacing:.08em;
  color:var(--muted);
}
.nav-close{
  margin-left:auto;
  padding:7px 10px;
  border:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--muted);
  transition:color .2s ease,border-color .2s ease;
}
.nav-close:hover,
.nav-close:focus-visible{
  color:var(--cyan);
  border-color:var(--cyan);
}

.nav-list{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:8px;
  padding:14px 0 4px;
}
.nav-item{ min-width:0; }
.nav-link{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:48px;
  padding:10px 12px;
  border:1px solid var(--line);
  background:rgba(18,51,42,.35);
  color:var(--text);
  transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.nav-link:hover{
  background:rgba(95,242,214,.10);
  border-color:rgba(95,242,214,.45);
}
.nav-link[aria-current="page"]{
  border-color:var(--cyan);
  background:linear-gradient(110deg,rgba(95,242,214,.20),rgba(18,51,42,.50));
  box-shadow:inset 2px 0 0 var(--cyan);
}
.nav-coord{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--cyan);
}
.nav-label{
  font-size:14px;
  letter-spacing:.04em;
}
.nav-foot{ display:none; }
.nav-foot-note{
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.10em;
  color:var(--muted);
  text-align:center;
}
.nav-foot-link{
  font-size:10.5px;
  letter-spacing:.06em;
  color:var(--cyan);
  border-bottom:1px solid rgba(95,242,214,.35);
}

.nav-scrim{
  position:fixed;
  inset:0;
  z-index:110;
  background:rgba(3,9,7,.66);
  opacity:0;
  pointer-events:none;
  transition:opacity .3s ease;
}
body[data-nav-open] .nav-scrim{
  opacity:1;
  pointer-events:auto;
}

/* ============ 7. 桌面坐标轴 ============ */
@media (min-width:1024px){
  .header-bar{ padding:0 28px; gap:18px; }
  .brand-name{ font-size:21px; }
  .nav-toggle{ display:none; }

  .site-nav{
    top:0;
    bottom:0;
    right:auto;
    left:0;
    width:var(--rail-w);
    max-height:none;
    overflow:visible;
    padding:0 0 18px;
    border-top:0;
    border-right:1px solid var(--line);
    background:linear-gradient(180deg,rgba(11,31,25,.97),rgba(6,17,14,.99));
    box-shadow:none;
    transform:none;
    visibility:visible;
  }
  .nav-head{
    flex-direction:column;
    justify-content:center;
    gap:3px;
    min-height:var(--header-h);
    padding:0;
    border-bottom:1px solid var(--line);
    background:rgba(6,17,14,.60);
  }
  .nav-close{ display:none; }
  .nav-list{
    display:flex;
    flex-direction:column;
    gap:4px;
    flex:1 1 auto;
    padding:16px 6px;
    overflow-y:auto;
  }
  .nav-link{
    flex-direction:column;
    justify-content:center;
    gap:3px;
    min-height:0;
    padding:12px 2px;
    border:0;
    border-left:2px solid transparent;
    background:transparent;
    text-align:center;
  }
  .nav-link:hover{
    background:rgba(95,242,214,.08);
    border-left-color:rgba(95,242,214,.40);
  }
  .nav-link[aria-current="page"]{
    background:linear-gradient(90deg,rgba(95,242,214,.18),rgba(95,242,214,.02));
    border-left-color:var(--cyan);
    box-shadow:none;
  }
  .nav-coord{ font-size:11px; }
  .nav-label{
    font-size:12px;
    color:var(--muted);
  }
  .nav-link[aria-current="page"] .nav-label{ color:var(--text); }

  .nav-foot{
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:8px;
    padding:14px 4px 0;
    border-top:1px solid var(--line);
  }
  .nav-scrim{ display:none; }
}

@media (max-width:767px){
  .header-bar{ gap:10px; padding:0 14px; }
  .brand-name{ font-size:17px; }
  .brand-sub{ font-size:7.5px; letter-spacing:.18em; }
  .coord-chip-label{ display:none; }
  .status-dot,
  .status-text{ display:none; }
}

/* ============ 8. 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:0;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,31,25,.72),rgba(6,17,14,1) 60%);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  right:0;
  height:2px;
  pointer-events:none;
  background:linear-gradient(90deg,var(--cyan),rgba(95,242,214,0) 55%,rgba(255,155,61,.85));
}
.site-footer .wrap{
  padding-top:52px;
  padding-bottom:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
}
@media (min-width:640px){
  .footer-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (min-width:1024px){
  .footer-grid{
    grid-template-columns:minmax(240px,1.5fr) repeat(3,minmax(150px,1fr));
    gap:38px;
  }
}
.footer-brand{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
}
.footer-mark{
  position:relative;
  width:30px;
  height:30px;
  display:grid;
  place-items:center;
  border:1px solid var(--cyan);
  background:rgba(95,242,214,.06);
}
.footer-mark::before{
  content:"";
  position:absolute;
  inset:4px;
  border:1px solid rgba(95,242,214,.30);
}
.footer-name{
  font-family:var(--font-display);
  font-size:22px;
  font-weight:700;
  letter-spacing:.08em;
}
.footer-note{
  flex-basis:100%;
  max-width:34ch;
  margin-top:4px;
  font-size:13px;
  line-height:1.7;
  color:var(--muted);
}
.footer-col{ min-width:0; }
.footer-col-title{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:600;
  letter-spacing:.20em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer-col-title::after{
  content:"";
  flex:1;
  height:1px;
  background:var(--line);
}
.footer-links{ display:grid; gap:9px; }
.footer-link{
  display:inline-flex;
  align-items:baseline;
  gap:9px;
  width:fit-content;
  font-size:13.5px;
  color:var(--muted);
  transition:color .2s ease,transform .2s ease;
}
.footer-link:hover,
.footer-link:focus-visible{
  color:var(--cyan-soft);
  transform:translateX(2px);
}
.footer-coord{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.08em;
  color:var(--cyan);
  opacity:.60;
}
.footer-meta{ display:grid; gap:10px; }
.footer-meta-item{ display:grid; gap:1px; }
.footer-meta-label{
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
}
.footer-meta-value{
  font-size:13.5px;
  color:var(--text);
  word-break:break-word;
}
.footer-meta-note{
  margin-top:2px;
  padding-left:10px;
  border-left:2px solid rgba(255,155,61,.50);
  font-size:12px;
  line-height:1.6;
  color:var(--muted);
}
.footer-bottom{
  margin-top:38px;
  padding:16px 0 26px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 20px;
  font-size:12px;
  color:var(--muted);
}
.footer-copy{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.04em;
  color:var(--muted);
}
.footer-icp{
  padding:3px 8px;
  border:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.04em;
  color:var(--muted);
}
.footer-policy{
  font-size:11.5px;
  color:var(--muted);
  border-bottom:1px solid rgba(143,169,161,.30);
  transition:color .2s ease,border-color .2s ease;
}
.footer-policy:hover,
.footer-policy:focus-visible{
  color:var(--cyan);
  border-color:var(--cyan);
}

/* ============ 9. 显现动效 ============ */
.js-reveal [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .6s ease,transform .6s cubic-bezier(.22,.8,.28,1);
}
.js-reveal [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* ============ 10. 可访问性偏好 ============ */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .status-dot{ animation:none; }
  .js-reveal [data-reveal]{
    opacity:1;
    transform:none;
  }
  .reading-progress-bar{ transition:none; }
}