/* =====================================================================
   云博看台 — 共享外壳样式 /assets/site.css
   深墨蓝基座 · 荧光青数据高亮 · 暖橙刷新节点 · 玻璃与实色双层面板
   ===================================================================== */

/* ---------- 变量 ---------- */
:root{
  --ink:#0B1F3A;
  --ink-deep:#071628;
  --panel:#133055;
  --band:#1F4370;
  --cyan:#00E5C7;
  --cyan-soft:#7CF2E4;
  --orange:#FF6B35;
  --orange-soft:#FFC2A6;
  --paper:#F4F7FA;
  --muted:#8FA3BB;
  --line:#3A5578;

  --font-sans:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",ui-monospace,Consolas,"Liberation Mono",Menlo,monospace;

  --header-h:76px;
  --header-h-compact:60px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --gutter:clamp(16px,3vw,40px);
  --maxw:1440px;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:400;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
img,svg,video{display:block;max-width:100%;}
table{border-collapse:collapse;width:100%;}
::selection{background:var(--cyan);color:var(--ink-deep);}
#main-content{display:block;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:2px;}

@media (min-width:1200px){
  body{font-size:17px;}
}

/* =====================================================================
   SKIP LINK
   ===================================================================== */
.skip-link{
  position:fixed;
  top:10px;left:10px;
  z-index:1000;
  display:inline-block;
  padding:12px 20px;
  background:var(--cyan);
  color:var(--ink-deep);
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  border-radius:2px;
  transform:translateY(-180%);
  transition:transform .24s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:none;}

/* =====================================================================
   HEADER
   ===================================================================== */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:var(--scroll-progress,0%);
  height:2px;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--orange) 100%);
  transition:width .12s linear;
  pointer-events:none;
}
.site-header[data-scrolled="true"]{
  background:rgba(7,22,40,.93);
  -webkit-backdrop-filter:blur(16px) saturate(160%);
  backdrop-filter:blur(16px) saturate(160%);
  border-bottom-color:rgba(58,85,120,.6);
  box-shadow:0 18px 40px -32px rgba(0,0,0,.95);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:clamp(14px,2vw,32px);
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 var(--gutter);
  min-height:var(--header-h);
  transition:min-height .32s var(--ease);
}
.site-header[data-scrolled="true"] .header-inner{min-height:var(--header-h-compact);}

/* ---------- 品牌 ---------- */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  padding:8px 0;
}
.brand-mark{
  display:inline-flex;
  align-items:flex-end;
  gap:3px;
  width:34px;height:34px;
  padding:7px;
  flex:0 0 auto;
  border:1px solid rgba(0,229,199,.5);
  border-radius:2px;
  background:rgba(0,229,199,.07);
  transition:border-color .28s var(--ease),background .28s var(--ease);
}
.brand-mark span{flex:1 1 auto;background:var(--cyan);border-radius:1px;}
.brand-mark span:nth-child(1){height:34%;}
.brand-mark span:nth-child(2){height:64%;}
.brand-mark span:nth-child(3){height:100%;background:var(--orange);}
.brand:hover .brand-mark{border-color:var(--cyan);background:rgba(0,229,199,.15);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:19px;font-weight:900;letter-spacing:.08em;color:var(--paper);}
.brand-sub{
  margin-top:3px;
  font-family:var(--font-mono);
  font-size:9px;
  font-weight:400;
  letter-spacing:.26em;
  color:var(--muted);
}

/* ---------- 主导航 ---------- */
.primary-nav{flex:1 1 auto;display:flex;justify-content:center;align-items:center;}
.nav-list{display:flex;align-items:center;gap:clamp(10px,1.7vw,28px);}
.nav-item{display:block;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 2px;
  font-size:14px;
  font-weight:500;
  letter-spacing:.04em;
  color:var(--muted);
  transition:color .22s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:3px;
  height:2px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .28s var(--ease);
}
.nav-link:hover{color:var(--paper);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link[aria-current="page"]{color:var(--cyan);}
.nav-link[aria-current="page"]::after{transform:scaleX(1);}
.nav-meta{display:none;}

/* ---------- 右侧工具区 ---------- */
.header-tools{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.4vw,18px);
  flex:0 0 auto;
}
.header-meta{
  display:flex;
  align-items:center;
  gap:8px;
  margin:0;
  font-family:var(--font-mono);
  font-size:10px;
  font-weight:400;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
  white-space:nowrap;
}
.pulse-dot{
  width:6px;height:6px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--orange);
  animation:pulse 2.4s var(--ease) infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(255,107,53,.55);}
  70%{box-shadow:0 0 0 8px rgba(255,107,53,0);}
  100%{box-shadow:0 0 0 0 rgba(255,107,53,0);}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 20px;
  border:1px solid transparent;
  border-radius:2px;
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  text-align:center;
  cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.btn-primary{background:var(--cyan);border-color:var(--cyan);color:var(--ink-deep);}
.btn-primary:hover{background:var(--cyan-soft);border-color:var(--cyan-soft);transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--paper);}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);}
.btn-signal{background:transparent;border-color:rgba(255,107,53,.6);color:var(--orange);}
.btn-signal:hover{background:rgba(255,107,53,.12);border-color:var(--orange);}
.btn-sm{min-height:36px;padding:0 14px;font-size:13px;}

/* ---------- 汉堡按钮 ---------- */
.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  min-height:44px;
  min-width:44px;
  padding:0 12px;
  border:1px solid var(--line);
  border-radius:2px;
  color:var(--paper);
  transition:border-color .24s var(--ease),color .24s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan);}
.nav-toggle-bar{
  position:relative;
  display:block;
  width:16px;height:2px;
  background:currentColor;
  transition:background .2s var(--ease);
}
.nav-toggle-bar::before,
.nav-toggle-bar::after{
  content:"";
  position:absolute;left:0;
  width:16px;height:2px;
  background:currentColor;
  transition:transform .28s var(--ease);
}
.nav-toggle-bar::before{top:-5px;}
.nav-toggle-bar::after{top:5px;}
.site-header[data-open="true"] .nav-toggle-bar{background:transparent;}
.site-header[data-open="true"] .nav-toggle-bar::before{transform:translateY(5px) rotate(45deg);}
.site-header[data-open="true"] .nav-toggle-bar::after{transform:translateY(-5px) rotate(-45deg);}
.nav-toggle-text{font-size:13px;font-weight:700;letter-spacing:.08em;}

/* =====================================================================
   FOOTER
   ===================================================================== */
.site-footer{
  position:relative;
  background:var(--ink-deep);
  color:var(--muted);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:3px;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--band) 46%,var(--orange) 100%);
}
.footer-inner{
  display:grid;
  grid-template-columns:1.5fr 1fr 1.2fr;
  gap:clamp(24px,4vw,56px);
  max-width:var(--maxw);
  margin:0 auto;
  padding:clamp(48px,6vw,88px) var(--gutter) 0;
}
.footer-seg{min-width:0;}

.footer-brand{
  font-size:15px;
  font-weight:900;
  letter-spacing:.16em;
  color:var(--paper);
}
.footer-slogan{
  margin-top:10px;
  font-size:clamp(22px,2.4vw,32px);
  font-weight:900;
  line-height:1.3;
  letter-spacing:-.01em;
  color:var(--paper);
}
.mono-word{
  font-family:var(--font-mono);
  font-weight:400;
  letter-spacing:.01em;
  color:var(--cyan);
}
.footer-note{
  margin-top:14px;
  max-width:38ch;
  font-size:14px;
  line-height:1.85;
  color:var(--muted);
}
.footer-stamp{
  display:flex;
  align-items:center;
  gap:8px;
  margin-top:18px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
}

.footer-title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin-bottom:clamp(22px,3vw,32px);
  font-size:14px;
}
.footer-links:last-child{margin-bottom:0;}
.footer-links a{
  display:inline-block;
  color:var(--muted);
  transition:color .2s var(--ease);
}
.footer-links a:hover{color:var(--cyan);}
.footer-links--index a{display:flex;align-items:baseline;gap:10px;}
.footer-idx{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--orange);
}

.footer-contact{display:flex;flex-direction:column;gap:14px;font-size:14px;}
.footer-contact li{display:flex;flex-direction:column;gap:2px;min-width:0;}
.contact-label{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--muted);
}
.contact-value{
  font-size:14px;
  line-height:1.7;
  color:var(--paper);
  overflow-wrap:anywhere;
}
.footer-contact-note{
  padding-top:10px;
  border-top:1px solid rgba(58,85,120,.5);
  font-size:12.5px;
  line-height:1.85;
  color:var(--muted);
}

.footer-seg-legal{
  grid-column:1 / -1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 28px;
  margin-top:clamp(16px,3vw,32px);
  padding:20px 0 34px;
  border-top:1px solid var(--line);
}
.footer-copy,.footer-region{font-size:12.5px;color:var(--muted);}
.footer-icp{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--muted);
}
.footer-legal-links{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
  margin-left:auto;
  font-size:12.5px;
}
.footer-legal-links a{color:var(--muted);transition:color .2s var(--ease);}
.footer-legal-links a:hover{color:var(--cyan);}

/* =====================================================================
   通用排版与容器
   ===================================================================== */
.page-shell{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 var(--gutter);
}
.section-band{
  height:4px;
  margin:clamp(32px,5vw,68px) 0;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--band) 62%,var(--orange) 100%);
}
.rule{
  height:1px;
  border:0;
  margin:0;
  background:var(--line);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{
  content:"";
  width:24px;height:1px;
  background:currentColor;
}
.data-num{
  font-family:var(--font-mono);
  font-weight:700;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.03em;
  line-height:.9;
  color:var(--cyan);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border:1px solid rgba(0,229,199,.35);
  border-radius:999px;
  background:rgba(0,229,199,.12);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--cyan);
}
.tag--signal{
  background:rgba(255,107,53,.14);
  border-color:rgba(255,107,53,.42);
  color:var(--orange);
}
.tag--muted{
  background:rgba(143,163,187,.1);
  border-color:rgba(143,163,187,.28);
  color:var(--muted);
}
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin:0 0 clamp(20px,3vw,32px);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
}
.breadcrumbs > li{display:inline-flex;align-items:center;gap:10px;}
.breadcrumbs > li + li::before{content:"/";color:var(--line);}
.breadcrumbs a{color:var(--muted);transition:color .2s var(--ease);}
.breadcrumbs a:hover{color:var(--cyan);}
.breadcrumbs [aria-current="page"]{color:var(--paper);}

/* ---------- 面板层 ---------- */
.glass-panel{
  position:relative;
  padding:clamp(20px,3vw,36px);
  border:1px solid rgba(124,242,228,.16);
  border-radius:4px;
  background:rgba(19,48,85,.55);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
}
.solid-panel{
  padding:clamp(20px,3vw,36px);
  border:1px solid var(--line);
  border-radius:4px;
  background:var(--panel);
}
.reading-panel{
  padding:clamp(24px,4vw,56px);
  border-radius:4px;
  background:var(--paper);
  color:#12233a;
}
.reading-panel h2,
.reading-panel h3{color:var(--ink);}
.reading-panel a{color:#0a6b60;text-decoration:underline;text-underline-offset:3px;}
.scanlines{position:relative;overflow:hidden;}
.scanlines::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(180deg,rgba(244,247,250,.05) 0 1px,transparent 1px 3px);
}

/* ---------- 图片容器基础规则 ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  border:1px solid rgba(58,85,120,.55);
  border-radius:3px;
  background:linear-gradient(140deg,var(--panel) 0%,var(--ink-deep) 72%);
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.85) contrast(1.06) brightness(.94);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(7,22,40,0) 42%,rgba(7,22,40,.72) 100%);
}
.media-frame--wide{aspect-ratio:16 / 9;}
.media-frame--tall{aspect-ratio:3 / 4;}
.media-frame--square{aspect-ratio:1 / 1;}
.media-frame--panorama{aspect-ratio:21 / 9;}
.media-frame--flat::after{display:none;}

/* ---------- 分段切换 ---------- */
.seg-control{
  display:inline-flex;
  flex-wrap:wrap;
  gap:4px;
  padding:4px;
  border:1px solid var(--line);
  border-radius:3px;
  background:rgba(7,22,40,.5);
}
.seg-btn{
  min-height:40px;
  padding:0 18px;
  border-radius:2px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--muted);
  transition:background .22s var(--ease),color .22s var(--ease);
}
.seg-btn:hover{color:var(--paper);}
.seg-btn[aria-selected="true"]{background:var(--cyan);color:var(--ink-deep);}
[data-tabs-ready] [data-tab-panel][hidden]{display:none !important;}

/* ---------- 滚动显现 ---------- */
.reveal-ready [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .32s var(--ease),transform .32s var(--ease);
}
.reveal-ready [data-reveal].is-revealed{opacity:1;transform:none;}

/* =====================================================================
   响应式
   ===================================================================== */
@media (max-width:1100px){
  .header-meta{display:none;}
}

@media (max-width:900px){
  .nav-toggle{display:inline-flex;}

  .site-header[data-open="true"]{
    background:rgba(7,22,40,.97);
    -webkit-backdrop-filter:blur(16px) saturate(150%);
    backdrop-filter:blur(16px) saturate(150%);
  }

  .primary-nav{
    position:absolute;
    top:100%;left:0;right:0;
    display:block;
    max-height:0;
    overflow:hidden;
    visibility:hidden;
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    background:rgba(7,22,40,.98);
    -webkit-backdrop-filter:blur(16px) saturate(150%);
    backdrop-filter:blur(16px) saturate(150%);
    transition:max-height .34s var(--ease),visibility 0s linear .34s;
  }
  .site-header[data-open="true"] .primary-nav{
    max-height:calc(100vh - var(--header-h-compact));
    overflow-y:auto;
    visibility:visible;
    transition:max-height .34s var(--ease),visibility 0s linear 0s;
  }

  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px var(--gutter);
  }
  .nav-item{border-bottom:1px solid rgba(58,85,120,.45);}
  .nav-item:last-child{border-bottom:0;}
  .nav-link{
    display:flex;
    align-items:center;
    min-height:52px;
    padding:0;
    font-size:16px;
    color:var(--paper);
  }
  .nav-link::after{display:none;}
  .nav-link[aria-current="page"]{color:var(--cyan);}

  .nav-meta{
    display:block;
    padding:16px var(--gutter) 22px;
    border-top:1px solid rgba(58,85,120,.45);
    font-family:var(--font-mono);
    font-size:11px;
    line-height:1.9;
    letter-spacing:.12em;
    color:var(--muted);
  }

  .footer-inner{grid-template-columns:1fr 1fr;}
  .footer-seg-brand{grid-column:1 / -1;}
  .footer-seg-legal{grid-column:1 / -1;}
}

@media (max-width:620px){
  .header-tools .btn{display:none;}
  .footer-inner{grid-template-columns:1fr;}
  .footer-seg-legal{flex-direction:column;align-items:flex-start;}
  .footer-legal-links{margin-left:0;}
}

@media (max-width:420px){
  .brand-sub{display:none;}
  .brand-mark{width:30px;height:30px;padding:6px;}
  .brand-name{font-size:17px;}
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0s !important;
  }
  .pulse-dot{animation:none;box-shadow:0 0 0 3px rgba(255,107,53,.18);}
  .reveal-ready [data-reveal]{opacity:1;transform:none;}
  .site-header::after{transition:none;}
}