/* =========================================================
   anbo-stream.com.cn — 共享外壳样式表 /assets/site.css
   深空指挥中心：堆叠面板 · 侧边轨道 · 霓虹青 × 熔岩橙
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dt,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video,canvas{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse;border-spacing:0}
[hidden]{display:none !important}
:focus-visible{outline:2px solid #2BE9E0;outline-offset:3px;border-radius:2px}

/* ---------- 2. 变量 ---------- */
:root{
  --void:#05070E;
  --panel:#0B1220;
  --panel-2:#131C2E;
  --cyan:#2BE9E0;
  --cyan-mist:#7BF3EE;
  --lava:#FF6A2B;
  --sand:#FFA96B;
  --silver:#D3DCEA;
  --index:#8496AF;
  --line:#1F2B3F;
  --ok:#3ED598;
  --grad-key:linear-gradient(135deg,#2BE9E0 0%,#FF6A2B 100%);
  --rail:88px;
  --shell:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --t-fast:180ms;
  --t:260ms;
  --t-panel:320ms;
  --font-display:"Barlow Condensed","Oswald","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --scroll:0;
}

/* ---------- 3. 中文排版与页面底色 ---------- */
body{
  min-height:100vh;
  background-color:var(--void);
  background-image:
    radial-gradient(900px 620px at 12% -12%,rgba(43,233,224,.10),transparent 65%),
    radial-gradient(1040px 720px at 104% 6%,rgba(255,106,43,.075),transparent 62%);
  background-repeat:no-repeat;
  color:var(--silver);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
}
main{display:block}
h1,h2,h3,h4{font-weight:500;line-height:1.2;color:#fff}
strong{font-weight:600;color:#fff}
.sr-only{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. Skip link ---------- */
.skip-link{
  position:fixed;top:8px;left:8px;z-index:140;
  padding:10px 16px;
  background:var(--panel-2);
  color:var(--cyan);
  border:1px solid var(--cyan);
  border-radius:4px;
  font-size:13px;letter-spacing:.08em;
  transform:translateY(-180%);
  transition:transform var(--t) var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0)}

/* ---------- 5. 头部外壳（移动优先：sticky 顶栏 + 抽屉） ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px;
  min-height:60px;
  padding:10px 16px;
  background:rgba(6,9,16,.94);
  -webkit-backdrop-filter:blur(12px) saturate(1.2);
  backdrop-filter:blur(12px) saturate(1.2);
  border-bottom:1px solid var(--line);
  transition:border-color var(--t) var(--ease),background var(--t) var(--ease);
}
.site-header[data-open]{border-bottom-color:rgba(43,233,224,.5)}
.site-header::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(43,233,224,.55),rgba(255,106,43,.45) 55%,transparent);
  pointer-events:none;
}
.rail-progress{
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--grad-key);
  transform:scaleX(var(--scroll,0));
  transform-origin:left center;
  pointer-events:none;
  z-index:3;
}

/* 品牌 */
.rail-brand{display:flex;align-items:center;min-width:0}
.brand{display:inline-flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  position:relative;flex:0 0 auto;width:26px;height:26px;border-radius:3px;
  background:var(--grad-key);
  box-shadow:0 0 0 1px rgba(43,233,224,.35),0 6px 18px rgba(43,233,224,.16);
}
.brand-mark::after{
  content:"";position:absolute;inset:7px 6px;background:var(--void);
  clip-path:polygon(0 0,100% 0,100% 60%,0 100%);
}
.brand-text{display:flex;flex-direction:column;gap:1px;line-height:1.15;min-width:0}
.brand-name{font-family:var(--font-display);font-weight:600;font-size:17px;letter-spacing:.14em;color:#fff;white-space:nowrap}
.brand-sub{font-family:var(--font-mono);font-size:9px;letter-spacing:.26em;color:var(--index);text-transform:uppercase;white-space:nowrap}

/* 抽屉开关 */
.nav-toggle{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 12px;
  border:1px solid var(--line);border-radius:4px;
  background:var(--panel);color:var(--silver);
  font-size:12px;letter-spacing:.16em;
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease),background var(--t) var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan-mist);color:var(--cyan-mist)}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);color:var(--cyan);background:rgba(43,233,224,.08)}
.nav-toggle-bars{display:inline-flex;flex-direction:column;gap:3px;width:16px}
.nav-toggle-bars i{display:block;height:1px;width:100%;background:currentColor;transition:transform var(--t) var(--ease),opacity var(--t) var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(1){transform:translateY(4px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(3){transform:translateY(-4px) rotate(-45deg)}
.nav-toggle-label{line-height:1}

/* 抽屉导航本体 */
.site-nav{
  position:absolute;top:100%;right:0;z-index:4;
  width:min(88vw,340px);
  height:calc(100vh - 61px);
  height:calc(100dvh - 61px);
  display:flex;flex-direction:column;gap:22px;
  padding:24px 20px 32px;
  background:var(--panel-2);
  border-left:1px solid var(--line);
  border-bottom:1px solid var(--line);
  overflow-y:auto;
  transform:translateX(104%);
  visibility:hidden;
  transition:transform var(--t) var(--ease),visibility var(--t) var(--ease);
}
.site-header[data-open] .site-nav,
[data-open] .site-nav,
.site-nav[data-open]{transform:translateX(0);visibility:visible}

.nav-list{display:flex;flex-direction:column;gap:2px}
.nav-link{
  display:block;padding:12px 14px;
  border-left:2px solid transparent;
  font-size:16px;color:var(--silver);
  transition:color var(--t) var(--ease),background var(--t) var(--ease),border-color var(--t) var(--ease);
}
.nav-link:hover{color:var(--cyan-mist);background:rgba(43,233,224,.06)}
.nav-link[aria-current="page"]{
  color:var(--cyan);
  background:rgba(43,233,224,.10);
  border-left-color:var(--cyan);
}

/* 快速分段 */
.rail-segments{display:flex;flex-wrap:wrap;gap:8px}
.seg-link{
  display:inline-block;
  padding:7px 10px;
  border:1px solid var(--line);border-radius:3px;
  background:var(--panel);
  color:var(--index);
  font-size:12px;letter-spacing:.1em;
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease),background var(--t) var(--ease);
}
.seg-link:hover{color:#fff;border-color:var(--lava);background:rgba(255,106,43,.08)}

/* 状态点 */
.rail-status{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;color:var(--index)}
.status-dot{
  width:7px;height:7px;border-radius:50%;flex:0 0 auto;
  background:var(--ok);
  box-shadow:0 0 0 3px rgba(62,213,152,.16);
  animation:anbo-pulse 2.6s var(--ease) infinite;
}
@keyframes anbo-pulse{0%,100%{opacity:1}50%{opacity:.35}}
.status-text{line-height:1.3}

/* 客服复制 */
.rail-contact{
  display:flex;flex-direction:column;gap:8px;
  margin-top:auto;padding-top:16px;
  border-top:1px solid var(--line);
}
.rail-contact-label{font-family:var(--font-mono);font-size:10px;letter-spacing:.24em;text-transform:uppercase;color:var(--index)}
.rail-contact-note{font-size:11px;line-height:1.6;color:var(--index)}
.copy-btn{
  display:inline-flex;align-items:center;justify-content:space-between;gap:8px;
  width:100%;padding:9px 12px;
  border:1px solid var(--line);border-radius:3px;
  background:var(--panel);
  color:var(--silver);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.02em;
  text-align:left;overflow-wrap:anywhere;
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease),background var(--t) var(--ease);
}
.copy-btn::after{content:"复制";flex:0 0 auto;font-family:var(--font-body);font-size:11px;letter-spacing:.14em;color:var(--index);transition:color var(--t) var(--ease)}
.copy-btn:hover{border-color:var(--cyan-mist);color:#fff}
.copy-btn:hover::after{color:var(--cyan-mist)}
.copy-btn[data-copied]{border-color:var(--ok);color:var(--ok);background:rgba(62,213,152,.08)}
.copy-btn[data-copied]::after{content:"已复制";color:var(--ok)}
.copy-btn--inline{width:auto;padding:0;border:0;background:none;border-radius:0}
.copy-btn--inline::after{border-bottom:1px solid transparent}

/* ---------- 6. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,9vw,112px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,var(--panel) 0%,#070B14 100%);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;height:1px;
  width:min(300px,42vw);
  background:var(--grad-key);
}
.footer-inner{
  max-width:var(--shell);margin:0 auto;
  padding:clamp(32px,5vw,56px) 20px clamp(24px,4vw,40px);
  display:grid;gap:32px;
}
.footer-brand{display:flex;flex-direction:column;gap:14px;min-width:0}
.footer-note{font-size:13px;line-height:1.7;color:var(--index);max-width:34ch}
.footer-stamp{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--cyan-mist);opacity:.85}
.footer-cols{display:grid;gap:28px;grid-template-columns:1fr;min-width:0}
.footer-col{display:flex;flex-direction:column;gap:12px;min-width:0}
.footer-col-title{
  font-family:var(--font-display);font-size:11px;font-weight:500;
  letter-spacing:.24em;text-transform:uppercase;color:var(--silver);
}
.footer-list{display:flex;flex-direction:column;gap:9px;min-width:0}
.footer-list a{font-size:14px;color:var(--index);transition:color var(--t) var(--ease)}
.footer-list a:hover{color:var(--cyan-mist)}
.footer-list a:focus-visible{color:var(--cyan)}
.footer-addr{font-size:13px;line-height:1.6;color:var(--index)}
.footer-bar{
  max-width:var(--shell);margin:0 auto;
  padding:18px 20px 26px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;justify-content:space-between;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--index);
}
.footer-copy,.footer-legal{color:var(--index)}

/* ---------- 7. 页面阶段通用容器与面板 ---------- */
.container{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:20px}
.section{margin-top:clamp(48px,7vw,96px)}
.page-head{display:flex;flex-direction:column;gap:14px;padding:clamp(32px,5vw,64px) 0 clamp(20px,3vw,32px)}
.page-title{
  font-family:var(--font-display);font-weight:400;
  font-size:clamp(38px,7vw,88px);line-height:1.02;letter-spacing:-.02em;
  text-transform:uppercase;color:#fff;
}
.page-sub{font-size:clamp(15px,1.6vw,18px);line-height:1.75;color:var(--index);max-width:58ch}
.lede{font-size:clamp(17px,2vw,20px);line-height:1.72;color:var(--silver);max-width:60ch}
.eyebrow{font-family:var(--font-mono);font-size:11px;letter-spacing:.28em;text-transform:uppercase;color:var(--cyan)}

.panel{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:6px;
  padding:clamp(20px,3vw,36px);
}
.panel--flush{padding:0;overflow:hidden}
.panel-head{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-bottom:16px;margin-bottom:22px;
  border-bottom:1px solid var(--line);
}
.panel-title{font-family:var(--font-display);font-size:clamp(22px,3vw,34px);font-weight:500;letter-spacing:.02em;color:#fff}
.panel-index{font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;color:var(--index)}

/* ---------- 8. 按钮 / 标签 / 面包屑 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 20px;
  border:1px solid var(--line);border-radius:4px;
  background:var(--panel-2);color:var(--silver);
  font-size:14px;letter-spacing:.06em;
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease),background var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.btn:hover{border-color:var(--cyan-mist);color:#fff;box-shadow:0 10px 28px rgba(3,6,12,.45)}
.btn--primary{background:var(--grad-key);border-color:transparent;color:#05070E;font-weight:600}
.btn--primary:hover{color:#05070E;box-shadow:0 12px 32px rgba(255,106,43,.26)}
.btn--ghost{background:transparent}
.btn--sm{padding:8px 14px;font-size:12px;letter-spacing:.1em}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;border:1px solid var(--line);border-radius:3px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--index);
}
.tag--cyan{color:var(--cyan);border-color:rgba(43,233,224,.45);background:rgba(43,233,224,.08)}
.tag--lava{color:var(--sand);border-color:rgba(255,106,43,.45);background:rgba(255,106,43,.08)}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin-bottom:18px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--index);
}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a:hover{color:var(--cyan-mist)}

/* ---------- 9. 正文 / 网格 / 卡片 / 数据 ---------- */
.prose{max-width:68ch;font-size:16.5px;line-height:1.8;color:var(--silver)}
.prose p+p{margin-top:1em}
.prose h2,.prose h3{font-family:var(--font-display);letter-spacing:.02em;margin-top:1.6em}
.prose h2{font-size:clamp(22px,3vw,30px)}
.prose h3{font-size:19px}
.prose ul,.prose ol{display:flex;flex-direction:column;gap:.55em;margin-top:.9em}
.prose li{position:relative;padding-left:20px}
.prose li::before{content:"";position:absolute;left:0;top:.78em;width:9px;height:1px;background:var(--cyan)}
.prose a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}

.grid{display:grid;gap:20px;grid-template-columns:1fr}
.card{
  display:flex;flex-direction:column;gap:12px;
  background:var(--panel);border:1px solid var(--line);border-radius:6px;
  padding:clamp(18px,2.4vw,24px);
}
.card--raised{background:var(--panel-2);box-shadow:0 18px 42px rgba(3,6,12,.55)}

.stat{display:flex;flex-direction:column;gap:6px}
.stat-value{
  font-family:var(--font-mono);font-size:clamp(34px,5vw,60px);line-height:1;letter-spacing:-.02em;
  background:var(--grad-key);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-value--plain{background:none;color:var(--silver);-webkit-text-fill-color:currentColor}
.stat-label{font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--index)}

.table-wrap{width:100%;overflow-x:auto;border:1px solid var(--line);border-radius:6px}
table.data{width:100%;min-width:520px;font-size:14px}
.data th{
  padding:12px 14px;text-align:left;white-space:nowrap;
  font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.16em;
  color:var(--index);border-bottom:1px solid var(--line);
}
.data td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--silver)}
.data tbody tr:nth-child(even){background:rgba(19,28,46,.55)}
.data tbody tr:last-child td{border-bottom:0}
.data .num{font-family:var(--font-mono);color:var(--cyan-mist)}

/* ---------- 10. 图片容器基础规则 ---------- */
.media-frame{
  position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;
  border:1px solid var(--line);border-radius:6px;
  background:
    radial-gradient(120% 120% at 18% 0%,rgba(43,233,224,.16),transparent 60%),
    radial-gradient(120% 120% at 100% 100%,rgba(255,106,43,.14),transparent 58%),
    var(--panel-2);
}
.media-frame>img,.media-frame>svg,.media-frame>video{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-caption{margin-top:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--index)}

/* ---------- 11. 标签页与筛选（页面阶段调用） ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:6px;border-bottom:1px solid var(--line)}
.tab{
  margin-bottom:-1px;padding:10px 14px;
  border-bottom:2px solid transparent;
  font-size:13px;letter-spacing:.08em;color:var(--index);
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease),background var(--t) var(--ease);
}
.tab:hover{color:var(--silver);background:rgba(43,233,224,.05)}
.tab[aria-selected="true"]{color:var(--cyan);border-bottom-color:var(--cyan)}
.filter-bar{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  padding:6px 12px;border:1px solid var(--line);border-radius:999px;
  background:var(--panel);color:var(--index);
  font-size:12px;letter-spacing:.1em;
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease),background var(--t) var(--ease);
}
.chip:hover{color:#fff;border-color:var(--cyan-mist)}
.chip[aria-pressed="true"]{background:var(--grad-key);border-color:transparent;color:#05070E;font-weight:600}

/* ---------- 12. 滚动显现 ---------- */
html[data-js="on"] [data-reveal]{
  opacity:0;transform:translateY(12px);
  transition:opacity var(--t-panel) var(--ease),transform var(--t-panel) var(--ease);
}
html[data-js="on"] [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 13. 断点：平板 ---------- */
@media (min-width:768px){
  .container{padding-inline:24px}
  .footer-inner{padding-left:24px;padding-right:24px;grid-template-columns:minmax(220px,1fr) 2fr;gap:40px}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-bar{padding-left:24px;padding-right:24px}
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-nav{width:min(64vw,400px)}
}

/* ---------- 14. 断点：桌面侧边轨道 ---------- */
@media (min-width:1024px){
  body{padding-left:var(--rail)}
  .site-header{
    position:fixed;top:0;left:0;bottom:0;right:auto;
    width:var(--rail);min-height:0;
    flex-direction:column;flex-wrap:nowrap;align-items:stretch;justify-content:flex-start;
    gap:18px;padding:20px 0 16px;
    background:linear-gradient(180deg,#080D18 0%,#05070E 74%);
    border-bottom:0;border-right:1px solid var(--line);
    overflow-y:auto;overflow-x:hidden;
    scrollbar-width:none;
  }
  .site-header::-webkit-scrollbar{display:none}
  .site-header::before{display:none}
  .rail-progress{
    top:0;bottom:0;right:0;left:auto;width:2px;height:auto;
    transform:scaleY(var(--scroll,0));
    transform-origin:top center;
  }
  .nav-toggle{display:none}
  .rail-brand{padding:0 12px;justify-content:center}
  .brand{flex-direction:column;gap:10px;text-align:center}
  .brand-text{align-items:center}
  .brand-name{font-size:15px;letter-spacing:.1em}
  .brand-sub{font-size:8px;letter-spacing:.2em}
  .site-nav{
    position:static;width:auto;height:auto;
    transform:none;visibility:visible;
    display:flex;flex-direction:column;flex:1 1 auto;gap:18px;
    padding:0;background:none;border:0;overflow:visible;
  }
  .nav-list{gap:0}
  .nav-link{padding:9px 8px;font-size:12px;line-height:1.4;letter-spacing:.04em}
  .rail-segments{flex-direction:column;gap:2px;padding:0 8px}
  .seg-link{width:100%;padding:6px 4px;border-color:transparent;background:none;text-align:center;font-size:11px;letter-spacing:.02em}
  .seg-link:hover{background:rgba(43,233,224,.07);border-color:transparent}
  .rail-status{flex-direction:column;gap:6px;padding:0 10px;text-align:center;font-size:10px;letter-spacing:.06em}
  .rail-contact{padding:12px 10px 0;gap:6px;text-align:center}
  .rail-contact-label{font-size:9px;letter-spacing:.18em}
  .rail-contact-note{font-size:10px}
  .copy-btn{flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:8px 4px;font-size:11px;text-align:center;letter-spacing:0}
  .copy-btn::after{font-size:10px;letter-spacing:.06em}
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
  .footer-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
}

/* ---------- 15. 减少动效 ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  html[data-js="on"] [data-reveal]{opacity:1;transform:none}
  .status-dot{animation:none}
}