/* =========================================================
   croatia-tian-bo.com.cn — shared site kit (/assets/site.css)
   框架式导航 · 战术板配色 · 等宽索引 · 锐角直角
   ========================================================= */

/* ---------- 变量 ---------- */
:root{
  --paper:#F4F1EA;
  --paper-dark:#E6E1D6;
  --white:#FFFFFF;
  --navy:#0A1F44;
  --navy-ink:#12294F;
  --red:#C8102E;
  --red-dark:#8E0B20;
  --cyan:#00E5FF;
  --cyan-dark:#00697F;
  --stone:#2B2E31;
  --line:#D8D5CC;
  --moss:#4E5B4A;
  --clay:#B4654A;
  --muted:#7C8699;

  --font-sans:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono","Source Han Mono","SF Mono",Menlo,Consolas,monospace;
  --font-num:"DIN Condensed","Oswald","Arial Narrow","Source Han Sans SC",sans-serif;

  --rail-w:56px;
  --bar-h:76px;
  --gutter:clamp(16px,3.4vw,48px);
  --maxw:1360px;
  --ease:cubic-bezier(.4,0,.2,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  min-height:100vh;
  padding-top:var(--bar-h);
  padding-left:var(--rail-w);
  background-color:var(--paper);
  color:var(--stone);
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6{
  margin:0;
  font-weight:500;
  line-height:1.22;
  letter-spacing:-.01em;
  color:var(--navy);
}
h1{font-size:clamp(30px,4vw,54px);}
h2{font-size:clamp(22px,2.2vw,32px);}
h3{font-size:clamp(18px,1.5vw,22px);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--cyan-dark);text-decoration:none;transition:color .18s ease;}
a:hover{text-decoration:underline;}
strong,b{font-weight:500;color:var(--navy);}
code,kbd,samp{font-family:var(--font-mono);font-size:.92em;}
img,svg,video{display:block;max-width:100%;}
button{font:inherit;color:inherit;background:none;border:0;padding:0;}
hr{border:0;height:1px;background:var(--line);margin:0;}
address{font-style:normal;}

/* ---------- 焦点 ---------- */
:focus-visible{
  outline:2px solid var(--cyan-dark);
  outline-offset:2px;
}
.nav :focus-visible,
.frame-footer :focus-visible,
.frame-rail :focus-visible,
.bar-status:focus-visible{
  outline-color:var(--cyan);
}
#main-content{scroll-margin-top:calc(var(--bar-h) + 16px);}

/* ---------- 通用容器与节奏 ---------- */
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding-inline:var(--gutter);
}
.main-area{
  padding-block:clamp(28px,4vw,64px) clamp(52px,6vw,104px);
}
.prose{max-width:36em;color:var(--stone);}
.prose p + p{margin-top:1em;}
.rule{height:1px;background:var(--line);}

/* ---------- 跳过链接 ---------- */
.skip-link{
  position:fixed;
  top:0;
  left:var(--rail-w);
  z-index:120;
  transform:translateY(-140%);
  padding:11px 20px;
  background:var(--navy);
  color:#fff;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  text-decoration:none;
  border:1px solid var(--cyan);
}
.skip-link:focus{transform:translateY(0);text-decoration:none;color:#fff;}

/* =========================================================
   头部框架
   ========================================================= */
.frame-header{position:relative;z-index:70;}

/* 左侧固定导轨 */
.frame-rail{
  position:fixed;
  top:0;bottom:0;left:0;
  width:var(--rail-w);
  z-index:80;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:16px;
  padding:18px 0 22px;
  background-color:var(--navy);
  background-image:repeating-linear-gradient(180deg,rgba(255,255,255,.05) 0 1px,transparent 1px 48px);
  border-right:1px solid #000;
}
.rail-progress{
  position:absolute;
  top:0;left:0;
  width:3px;
  height:0;
  background:var(--cyan);
  transition:height .12s linear;
}
.rail-mark{
  writing-mode:vertical-rl;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.34em;
  color:#fff;
  margin-top:6px;
}
.rail-spine{
  flex:1 1 auto;
  width:1px;
  background-image:repeating-linear-gradient(180deg,rgba(255,255,255,.34) 0 5px,transparent 5px 11px);
}
.rail-coord{
  writing-mode:vertical-rl;
  font-family:var(--font-mono);
  font-size:10px;
  line-height:1.7;
  letter-spacing:.16em;
  color:var(--cyan);
}

/* 顶部常驻横栏 */
.frame-bar{
  position:fixed;
  top:0;right:0;left:var(--rail-w);
  height:var(--bar-h);
  z-index:70;
  display:flex;
  align-items:stretch;
  background:var(--white);
  border-bottom:1px solid var(--stone);
}

/* 品牌块 */
.brand{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  gap:12px;
  padding-inline:clamp(12px,1.6vw,24px);
  border-right:1px solid var(--line);
  color:var(--navy);
  text-decoration:none;
}
.brand:hover{text-decoration:none;}
.brand-check{
  flex:0 0 auto;
  width:28px;
  height:28px;
  border:1px solid var(--stone);
  background-image:repeating-conic-gradient(var(--red) 0% 25%,var(--white) 0% 50%);
  background-size:14px 14px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-line{
  font-size:clamp(13px,1.1vw,15px);
  font-weight:500;
  color:var(--navy);
  letter-spacing:-.01em;
}
.brand-sub{
  margin-top:3px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--cyan-dark);
}

/* 主导航：桌面端横向嵌在框架里 */
.nav{
  flex:1 1 auto;
  min-width:0;
  display:flex;
  align-items:stretch;
  overflow-x:auto;
  overflow-y:hidden;
  scrollbar-width:thin;
}
.nav-head,.nav-foot{display:none;}
.nav-list{
  display:flex;
  align-items:stretch;
  height:100%;
}
.nav-item{display:flex;}
.nav-link{
  display:flex;
  align-items:center;
  gap:8px;
  height:100%;
  padding-inline:clamp(10px,1.2vw,18px);
  border-right:1px solid var(--line);
  white-space:nowrap;
  font-size:15px;
  color:var(--stone);
  text-decoration:none;
  background-image:linear-gradient(var(--red),var(--red));
  background-repeat:no-repeat;
  background-position:left center;
  background-size:0% 100%;
  transition:background-size .22s var(--ease),color .2s ease;
}
.nav-link:hover,
.nav-link:focus-visible{
  background-size:100% 100%;
  color:#fff;
  text-decoration:none;
}
.nav-code{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  font-variant-numeric:tabular-nums;
  color:var(--muted);
  transition:color .2s ease;
}
.nav-link:hover .nav-code,
.nav-link:focus-visible .nav-code{color:#fff;}
.nav-label{display:inline-block;}
.nav-link[aria-current="page"]{
  background-image:none;
  background-color:var(--navy);
  color:#fff;
}
.nav-link[aria-current="page"] .nav-code{color:var(--cyan);}
.nav-link[aria-current="page"]:hover{background-size:0% 100%;}

/* 刷新状态芯片 */
.bar-status{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  gap:8px;
  padding-inline:clamp(12px,1.5vw,20px);
  background:var(--navy);
  color:#dfe6f2;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  white-space:nowrap;
  border-left:1px solid var(--line);
}
.bar-dot{
  flex:0 0 auto;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--cyan);
  animation:bar-pulse 3.6s ease-in-out infinite;
}
@keyframes bar-pulse{
  0%,100%{opacity:1;}
  50%{opacity:.3;}
}

/* 移动菜单按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding-inline:18px;
  border-left:1px solid var(--line);
  background:var(--paper-dark);
  color:var(--navy);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  cursor:pointer;
}
.nav-toggle-text{display:inline-block;}
.nav-toggle-icon{
  position:relative;
  width:16px;
  height:2px;
  background:var(--navy);
  transition:background-color .2s ease;
}
.nav-toggle-icon::before,
.nav-toggle-icon::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:2px;
  background:var(--navy);
  transition:transform .22s var(--ease);
}
.nav-toggle-icon::before{top:-5px;}
.nav-toggle-icon::after{top:5px;}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon{background:transparent;}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before{transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after{transform:translateY(-5px) rotate(-45deg);}

/* =========================================================
   通用组件
   ========================================================= */

/* 索引标签 */
.idx{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 8px;
  border:1px solid var(--line);
  background:var(--white);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--cyan-dark);
  font-variant-numeric:tabular-nums;
}
.idx--dark{
  background:var(--navy);
  border-color:var(--navy);
  color:var(--cyan);
}

/* 大号读数 */
.readout{
  font-family:var(--font-num);
  font-size:clamp(40px,7vw,80px);
  line-height:.92;
  letter-spacing:-.02em;
  color:var(--navy);
  font-variant-numeric:tabular-nums;
}
.readout--red{color:var(--red);}

/* 数据卡片 */
.data-card{
  position:relative;
  isolation:isolate;
  padding:clamp(18px,2.2vw,28px);
  background:var(--white);
  border:1px solid var(--line);
  transition:border-color .22s ease;
}
.data-card::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background-image:repeating-conic-gradient(var(--stone) 0% 25%,transparent 0% 50%);
  background-size:24px 24px;
  opacity:.06;
  pointer-events:none;
  transition:opacity .25s ease;
}
.data-card:hover,
.data-card:focus-within{border-color:var(--stone);}
.data-card:hover::after,
.data-card:focus-within::after{opacity:.1;}

/* 来源行 */
.source-line{
  display:flex;
  align-items:center;
  gap:8px;
  margin-top:16px;
  padding-top:10px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--muted);
}
.source-line::before{
  content:"";
  flex:0 0 auto;
  width:6px;
  height:6px;
  background:var(--moss);
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:12px 22px;
  border:1px solid var(--stone);
  background-color:transparent;
  background-image:linear-gradient(var(--red),var(--red));
  background-repeat:no-repeat;
  background-position:left center;
  background-size:0% 100%;
  color:var(--stone);
  font-size:15px;
  font-weight:500;
  line-height:1.4;
  text-decoration:none;
  cursor:pointer;
  transition:background-size .22s var(--ease),color .2s ease,border-color .2s ease;
}
.btn:hover,
.btn:focus-visible{
  background-size:100% 100%;
  border-color:var(--red);
  color:#fff;
  text-decoration:none;
}
.btn--solid{
  background-color:var(--navy);
  border-color:var(--navy);
  color:#fff;
}
.btn--solid:hover,
.btn--solid:focus-visible{
  border-color:var(--red);
  color:#fff;
}
.btn--ghost{
  border-color:var(--line);
  background-color:var(--white);
  color:var(--navy);
}

/* 面包屑 */
.breadcrumbs{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--muted);
}
.breadcrumbs ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.breadcrumbs li{display:flex;align-items:center;gap:8px;}
.breadcrumbs li + li::before{
  content:"/";
  color:var(--line);
}
.breadcrumbs a{color:var(--cyan-dark);}
.breadcrumbs a:hover{text-decoration:underline;}
.breadcrumbs [aria-current="page"]{color:var(--stone);}

/* 图形容器（响应式图片占位基础规则） */
.media-frame{
  position:relative;
  width:100%;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--paper-dark);
  border:1px solid var(--line);
}
.media-frame img,
.media-frame svg{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame--square{aspect-ratio:1/1;}
.media-frame--wide{aspect-ratio:21/9;}
.media-frame--tall{aspect-ratio:3/4;}
.media-frame__fallback{
  position:absolute;
  inset:0;
  display:grid;
  place-items:center;
  padding:12px;
  text-align:center;
  background-image:repeating-conic-gradient(var(--line) 0% 25%,transparent 0% 50%);
  background-size:32px 32px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:#8b8f93;
}

/* 数据表 */
.data-table{
  width:100%;
  border-collapse:collapse;
  font-size:14px;
}
.data-table caption{
  padding-bottom:10px;
  text-align:left;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
}
.data-table th{
  padding:10px 12px;
  text-align:left;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.1em;
  color:var(--navy);
  background:var(--paper-dark);
  border-bottom:1px solid var(--stone);
}
.data-table td{
  padding:12px;
  color:var(--stone);
  border-bottom:1px solid var(--line);
}
.data-table tbody tr:nth-child(even){background:var(--paper-dark);}
.data-table td.num{
  font-family:var(--font-num);
  font-size:20px;
  line-height:1.2;
  color:var(--navy);
  font-variant-numeric:tabular-nums;
}

/* =========================================================
   页脚
   ========================================================= */
.frame-footer{
  position:relative;
  background:var(--navy);
  color:#c9d3e4;
}
.frame-footer::before{
  content:"";
  display:block;
  height:10px;
  background-image:repeating-conic-gradient(var(--red) 0% 25%,var(--white) 0% 50%);
  background-size:20px 20px;
}
.footer-inner{
  display:grid;
  grid-template-columns:minmax(240px,1.15fr) 2fr minmax(220px,1fr);
  gap:clamp(24px,3vw,56px);
  max-width:var(--maxw);
  margin:0 auto;
  padding:clamp(36px,4.6vw,68px) var(--gutter) clamp(28px,3vw,44px);
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;flex-direction:column;}
.footer-check{
  display:block;
  width:34px;
  height:34px;
  margin-bottom:16px;
  border:1px solid rgba(255,255,255,.3);
  background-image:repeating-conic-gradient(var(--white) 0% 25%,transparent 0% 50%);
  background-size:17px 17px;
}
.footer-mark{
  font-size:17px;
  font-weight:500;
  color:#fff;
  letter-spacing:-.01em;
}
.footer-sub{
  margin-top:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--cyan);
}
.footer-source{
  margin-top:16px;
  max-width:34ch;
  font-size:12px;
  line-height:1.8;
  color:#8fa0bd;
}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(16px,2vw,28px);
}
.footer-col{min-width:0;}
.footer-col-title{
  margin:0 0 14px;
  padding-bottom:10px;
  border-bottom:1px solid rgba(255,255,255,.14);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:400;
  letter-spacing:.2em;
  color:var(--cyan);
}
.footer-list li + li{margin-top:8px;}
.footer-list a{
  display:inline-block;
  padding:2px 0;
  font-size:14px;
  color:#c9d3e4;
  text-decoration:none;
  background-image:linear-gradient(var(--cyan),var(--cyan));
  background-repeat:no-repeat;
  background-position:left center;
  background-size:0% 100%;
  transition:background-size .22s var(--ease),color .2s ease,padding-left .22s var(--ease);
}
.footer-list a:hover,
.footer-list a:focus-visible{
  background-size:100% 100%;
  padding-left:4px;
  color:#fff;
  text-decoration:none;
}
.footer-contact .footer-line{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.02em;
  color:#dfe6f2;
  word-break:break-all;
}
.footer-contact .footer-line + .footer-line{margin-top:8px;}
.footer-addr{
  margin-top:12px;
  font-size:13px;
  line-height:1.7;
  color:#c9d3e4;
}
.footer-note{
  margin-top:10px;
  font-size:12px;
  line-height:1.8;
  color:#8fa0bd;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 32px;
  align-items:center;
  justify-content:space-between;
  max-width:var(--maxw);
  margin:0 auto;
  padding:18px var(--gutter) 34px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:#8fa0bd;
}
.footer-update{color:#c9d3e4;}
.footer-legal{color:#8fa0bd;}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1180px){
  .bar-status{display:none;}
}

@media (max-width:1080px){
  :root{--rail-w:0px;--bar-h:64px;}

  .frame-rail{display:none;}
  .frame-bar{left:0;}
  .brand-sub{display:none;}
  .brand-check{width:22px;height:22px;background-size:11px 11px;}
  .nav-toggle{display:flex;}

  .nav{
    position:fixed;
    top:0;bottom:0;left:0;
    z-index:90;
    width:min(320px,86vw);
    display:flex;
    flex-direction:column;
    padding:26px 0 30px;
    background:var(--navy);
    border-right:1px solid #000;
    overflow-y:auto;
    overflow-x:hidden;
    transform:translateX(-102%);
    transition:transform .28s var(--ease);
  }
  .nav[data-open]{transform:translateX(0);}

  .nav-head{
    display:block;
    padding:0 22px 16px;
    border-bottom:1px solid rgba(255,255,255,.14);
    font-family:var(--font-mono);
    font-size:11px;
    letter-spacing:.2em;
    color:var(--cyan);
  }
  .nav-list{
    display:block;
    height:auto;
  }
  .nav-item{display:block;}
  .nav-link{
    height:auto;
    padding:16px 22px;
    border-right:0;
    border-bottom:1px solid rgba(255,255,255,.1);
    font-size:16px;
    color:#dfe6f2;
  }
  .nav-link:hover,
  .nav-link:focus-visible{color:#fff;}
  .nav-code{color:var(--muted);}
  .nav-link[aria-current="page"]{
    background-color:transparent;
    background-image:none;
    box-shadow:inset 3px 0 0 var(--cyan);
    color:#fff;
  }
  .nav-link[aria-current="page"]:hover{background-size:0% 100%;}
  .nav-foot{
    display:block;
    margin-top:auto;
    padding:20px 22px 0;
    font-family:var(--font-mono);
    font-size:11px;
    line-height:1.8;
    letter-spacing:.08em;
    color:#8fa0bd;
  }
}

@media (max-width:860px){
  .footer-inner{grid-template-columns:1fr;gap:32px;}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  .footer-bottom{justify-content:flex-start;}
}

@media (max-width:520px){
  .brand-line{font-size:13px;}
  .nav-toggle{padding-inline:14px;}
  .nav-toggle-text{display:none;}
  .footer-cols{grid-template-columns:1fr;}
  .readout{font-size:clamp(36px,12vw,56px);}
}

/* 键盘与阅读模式 */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .bar-dot{opacity:1;}
}