*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-top:130px}
body{margin:0}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
[hidden]{display:none!important}

:root{
  --ink:#0E2B24;
  --ink-deep:#08120F;
  --paper:#F4EFE2;
  --brown:#1B1A14;
  --cyan:#12F0C8;
  --amber:#FF9F1C;
  --brick:#C8452B;
  --mid:#2F6B58;
  --sage:#7FA694;
  --sand:#D9D2BE;

  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-display:"Barlow Condensed","HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","IBM Plex Mono","SF Mono",Menlo,Consolas,"Courier New",monospace;

  --bw:2px;
  --radius:2px;
  --shadow-hard:8px 8px 0 rgba(8,18,15,.6);
  --shadow-soft:4px 4px 0 rgba(8,18,15,.35);
  --ease:cubic-bezier(.2,0,0,1);
  --dur:160ms;
  --shell:1280px;
  --shell-wide:1440px;
  --pad-x:clamp(16px,3vw,40px);
  --header-offset:clamp(110px,13vw,152px);
}

body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--brown);
  background-color:var(--paper);
  background-image:repeating-linear-gradient(90deg,rgba(27,26,20,.045) 0 1px,transparent 1px 72px);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
@media (min-width:1024px){body{font-size:18px}}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;line-height:1.02;letter-spacing:-.02em;color:var(--brown)}
h1{font-size:clamp(36px,5.6vw,68px)}
h2{font-size:clamp(26px,3.2vw,40px)}
h3{font-size:clamp(19px,2vw,26px);line-height:1.22}
strong,b{font-weight:700}
time,.tab,.tag{font-variant-numeric:tabular-nums}

::selection{background:var(--cyan);color:var(--ink-deep)}

:focus-visible{
  outline:3px solid var(--cyan);
  outline-offset:2px;
  box-shadow:0 0 0 1px var(--ink-deep);
}
a:focus-visible,button:focus-visible{outline-offset:3px}

.visually-hidden{
  position:absolute!important;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;
}

.link{
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-decoration-color:var(--brown);
  text-underline-offset:4px;
  position:relative;
  transition:text-decoration-color var(--dur) var(--ease),top var(--dur) var(--ease);
}
.link:hover,.link:focus-visible{
  text-decoration-color:var(--cyan);
  text-decoration-thickness:2px;
  top:1px;
}

/* ---------------- 头部：透明叠加数据带 ---------------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:200;isolation:isolate;
  padding:0 var(--pad-x);
  color:var(--paper);
  background-image:linear-gradient(180deg,rgba(14,43,36,.96) 0%,rgba(14,43,36,.68) 58%,rgba(14,43,36,0) 100%);
  border-bottom:2px solid transparent;
  transition:border-color var(--dur) var(--ease);
}
.site-header::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:var(--ink-deep);
  opacity:0;
  transition:opacity var(--dur) var(--ease);
}
.site-header[data-scrolled]{border-bottom-color:rgba(18,240,200,.35)}
.site-header[data-scrolled]::before,
.site-header[data-open]::before{opacity:1}

.skip-link{
  position:absolute;left:var(--pad-x);top:-72px;z-index:9;
  display:inline-block;
  padding:10px 16px;
  background:var(--cyan);color:var(--ink-deep);
  border:2px solid var(--ink-deep);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:8px}

.header-progress{
  position:absolute;left:0;bottom:-2px;z-index:3;
  width:100%;height:3px;
  background:var(--cyan);
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform 90ms linear;
}

.header-inner{
  position:relative;
  max-width:var(--shell-wide);
  margin:0 auto;
}

.header-bar{
  display:flex;align-items:center;
  gap:clamp(10px,2vw,26px);
  padding:18px 0 10px;
  transition:padding var(--dur) var(--ease);
}
.site-header[data-scrolled] .header-bar{padding:9px 0 7px}

/* 品牌 */
.brand{
  order:1;flex:0 0 auto;
  display:flex;align-items:center;gap:10px;
  color:var(--paper);
}
.brand-mark{
  flex:none;width:16px;height:16px;
  background:var(--cyan);
  border:2px solid var(--paper);
  box-shadow:3px 3px 0 rgba(18,240,200,.45);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.brand:hover .brand-mark{transform:translate(-1px,-1px);box-shadow:4px 4px 0 rgba(18,240,200,.7)}
.brand-text{display:flex;flex-direction:column;line-height:1}
.brand-name{font-family:var(--font-display);font-weight:900;font-size:20px;letter-spacing:.06em}
.brand-sub{font-family:var(--font-mono);font-size:9px;letter-spacing:.3em;color:var(--sage);margin-top:5px}

/* 导航 */
.site-nav{order:2;flex:1 1 auto;display:flex;justify-content:center;min-width:0}
.nav-list{display:flex;align-items:center;justify-content:center;gap:clamp(4px,1.1vw,18px);flex-wrap:nowrap}
.nav-item{flex:0 0 auto}
.nav-link{
  display:inline-block;
  padding:6px 8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:rgba(244,239,226,.72);
  border-bottom:2px solid transparent;
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav-link:hover,.nav-link:focus-visible{color:var(--cyan);border-bottom-color:var(--cyan)}
.nav-link[aria-current="page"]{background:var(--cyan);color:var(--ink-deep);border-bottom-color:var(--cyan)}
.site-header[data-scrolled] .nav-link{color:rgba(244,239,226,.94)}
.site-header[data-scrolled] .nav-link:hover{color:var(--cyan)}
.site-header[data-scrolled] .nav-link[aria-current="page"]{color:var(--ink-deep)}

/* 批次信息 */
.header-meta{
  order:3;margin-left:auto;flex:0 0 auto;
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);
}
.batch-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 8px;
  font-size:11px;letter-spacing:.12em;
  color:var(--amber);
  border:1px solid rgba(255,159,28,.65);
  background:rgba(255,159,28,.1);
  white-space:nowrap;
}
.batch-time{font-size:11px;letter-spacing:.06em;color:var(--sage);white-space:nowrap}

.status-dot{
  flex:none;width:8px;height:8px;border-radius:50%;
  background:var(--cyan);
  animation:dot-breathe 2.6s ease-in-out infinite;
}
@keyframes dot-breathe{
  0%,100%{box-shadow:0 0 0 0 rgba(18,240,200,.5);opacity:.82}
  50%{box-shadow:0 0 0 6px rgba(18,240,200,0);opacity:1}
}

/* 移动开关 */
.nav-toggle{
  order:4;flex:0 0 auto;
  display:none;align-items:center;gap:8px;
  padding:7px 10px;
  color:var(--cyan);
  border:2px solid var(--cyan);
  background:transparent;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{background:var(--cyan);color:var(--ink-deep)}
.nav-toggle-bars{position:relative;display:block;width:16px;height:10px}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";position:absolute;left:0;right:0;height:2px;
  background:currentColor;
  transition:transform var(--dur) var(--ease),top var(--dur) var(--ease);
}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{top:8px}
.site-header[data-open] .nav-toggle-bars::before{top:4px;transform:rotate(45deg)}
.site-header[data-open] .nav-toggle-bars::after{top:4px;transform:rotate(-45deg)}

/* 面包屑 */
.breadcrumb{max-width:var(--shell-wide);margin:0 auto;padding:0 0 12px}
.breadcrumb-list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
}
.breadcrumb-item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb-link{
  color:var(--sage);
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.breadcrumb-link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.breadcrumb-sep{color:rgba(255,159,28,.8)}
.breadcrumb-current{color:var(--paper);border-bottom:1px solid rgba(18,240,200,.55)}
.site-header[data-scrolled] .breadcrumb{padding-bottom:8px}

/* ---------------- 正文容器与基础组件 ---------------- */
#main-content{display:block;padding-top:var(--header-offset)}

.shell{
  width:100%;max-width:var(--shell);
  margin:0 auto;
  padding-left:var(--pad-x);
  padding-right:var(--pad-x);
}

.split{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:clamp(20px,3vw,48px);
  align-items:start;
}
.split--reverse{grid-template-columns:5fr 7fr}

.prose{max-width:68ch;font-size:clamp(16px,1.1vw,18px);line-height:1.75}
.prose p+p{margin-top:1em}
.prose h2{font-size:clamp(22px,2.4vw,30px);margin:1.6em 0 .5em}
.prose h3{font-size:clamp(18px,1.8vw,22px);margin:1.4em 0 .4em}
.prose ul,.prose ol{margin:1em 0;padding-left:1.3em}
.prose ul{list-style:square}
.prose li{margin:.35em 0}
.prose blockquote{margin:1.4em 0;padding:10px 0 10px 16px;border-left:4px solid var(--brick)}

.label{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--mid);
}
.label::before{content:"";flex:none;width:8px;height:8px;background:var(--brick)}

.rule{display:block;width:100%;height:2px;border:0;background:var(--brown)}

.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 18px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  color:var(--brown);
  background:transparent;
  border:2px solid var(--brown);
  border-radius:0;
  box-shadow:var(--shadow-soft);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(8,18,15,.5)}
.btn:active{transform:translate(2px,2px);box-shadow:0 0 0 rgba(8,18,15,0)}
.btn--amber{background:var(--amber);border-color:var(--ink-deep);color:var(--ink-deep)}
.btn--cyan{background:var(--cyan);border-color:var(--ink-deep);color:var(--ink-deep)}
.btn--ghost{background:transparent;border-color:var(--brown)}

.panel{
  padding:clamp(18px,2.4vw,28px);
  background:var(--paper);
  border:var(--bw) solid var(--brown);
  border-radius:var(--radius);
  box-shadow:var(--shadow-hard);
}
.panel--ink{background:var(--ink);color:var(--paper);border-color:var(--ink-deep)}

/* 图片容器基础规则 */
.media{display:block;margin:0}
.media__frame{
  position:relative;overflow:hidden;
  aspect-ratio:16/10;
  background-color:var(--sand);
  background-image:repeating-linear-gradient(45deg,rgba(27,26,20,.07) 0 1px,transparent 1px 10px);
  border:3px solid var(--brown);
  box-shadow:var(--shadow-hard);
}
.media__frame::before{
  content:"";position:absolute;right:0;bottom:0;z-index:3;
  width:52px;height:52px;
  background:var(--paper);
  border-top:3px solid var(--brown);
  border-left:3px solid var(--brown);
  pointer-events:none;
}
.media__frame::after{
  content:"";position:absolute;inset:0;z-index:2;pointer-events:none;
  background:rgba(14,43,36,.12);
  mix-blend-mode:multiply;
}
.media__img{width:100%;height:100%;object-fit:cover}
.media__cap{
  margin-top:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--mid);
}
.media--wide .media__frame{aspect-ratio:21/9}
.media--tall .media__frame{aspect-ratio:4/5}

/* 分段切换（首屏数据小部件） */
.tabs{display:block}
.tab-list{
  display:flex;flex-wrap:wrap;
  background:var(--paper);
  border:2px solid var(--brown);
}
.tab{
  flex:1 1 auto;
  padding:10px 14px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
  color:var(--brown);
  background:transparent;
  border-right:2px solid var(--brown);
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.tab:last-child{border-right:0}
.tab:hover{background:var(--amber);color:var(--ink-deep)}
.tab[aria-selected="true"]{background:var(--ink);color:var(--cyan)}
.tab[aria-selected="true"]:hover{background:var(--ink);color:var(--cyan)}
.tab-panel{padding-top:18px}

/* 筛选标签 */
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--mid);
  background:transparent;
  border:1px solid var(--mid);
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.tag:hover{border-color:var(--brown);color:var(--brown)}
.tag[aria-pressed="true"]{background:var(--amber);border-color:var(--ink-deep);color:var(--ink-deep)}

/* 数据条 */
.meter{display:grid;gap:6px}
.meter__track{
  position:relative;height:10px;
  background:var(--ink-deep);
  border:1px solid var(--ink-deep);
  overflow:hidden;
  transition:height var(--dur) var(--ease);
}
.meter:hover .meter__track,
.meter:focus-within .meter__track{height:18px}
.meter__fill{height:100%;background:var(--cyan);transition:width var(--dur) var(--ease)}
.meter__num{
  font-family:var(--font-mono);font-weight:600;font-size:12px;
  letter-spacing:.04em;font-variant-numeric:tabular-nums;
}

/* ---------------- 页脚 ---------------- */
.site-footer{
  color:var(--paper);
  background-color:var(--ink-deep);
  background-image:
    repeating-linear-gradient(0deg,rgba(127,166,148,.1) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(90deg,rgba(127,166,148,.1) 0 1px,transparent 1px 48px);
  border-top:3px solid var(--cyan);
}
.footer-inner{
  max-width:var(--shell-wide);
  margin:0 auto;
  padding:clamp(40px,6vw,72px) var(--pad-x) clamp(28px,4vw,44px);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1.3fr;
  gap:clamp(28px,4vw,56px);
}
.footer-col{min-width:0}

.footer-name{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(24px,3vw,36px);line-height:1;
  letter-spacing:.04em;
  color:var(--paper);
}
.footer-tagline{
  margin-top:12px;
  font-size:14px;line-height:1.7;
  color:var(--sage);
  max-width:26ch;
}
.footer-batch{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:16px;padding:5px 9px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--amber);
  border:1px solid rgba(255,159,28,.45);
  background:rgba(255,159,28,.08);
}

.footer-title{
  display:flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-weight:600;
  font-size:11px;letter-spacing:.18em;line-height:1.2;
  color:var(--cyan);
  margin-bottom:12px;
}
.footer-title::before{content:"";flex:none;width:14px;height:2px;background:var(--amber)}
.footer-nav-list{display:grid;gap:8px;margin-bottom:22px}
.footer-nav-list:last-child{margin-bottom:0}

.footer-link{
  position:relative;
  display:inline-block;
  padding-left:12px;
  font-size:14px;
  color:rgba(244,239,226,.8);
  transition:color var(--dur) var(--ease);
}
.footer-link::before{
  content:"";position:absolute;left:0;top:.62em;
  width:4px;height:4px;
  background:var(--brick);
  transition:width var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.footer-link:hover,.footer-link:focus-visible{color:var(--cyan)}
.footer-link:hover::before{width:10px;background:var(--cyan)}
.footer-link--cta{
  display:inline-flex;align-items:center;
  margin-top:18px;padding:7px 11px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  color:var(--amber);
  border:1px solid rgba(255,159,28,.7);
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.footer-link--cta::before{display:none}
.footer-link--cta:hover{background:var(--amber);color:var(--ink-deep);transform:translate(-1px,-1px)}

.footer-contact-list{display:grid;gap:12px}
.footer-contact-item{display:grid;gap:2px}
.footer-contact-key{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;
  color:var(--sage);
}
.footer-contact-value{
  font-size:14px;line-height:1.6;
  color:var(--paper);
  overflow-wrap:anywhere;
}
.footer-note{
  margin-top:16px;padding-left:12px;
  border-left:2px solid var(--mid);
  font-size:12px;line-height:1.75;
  color:var(--sage);
  max-width:34ch;
}

.footer-bottom{
  border-top:1px solid rgba(127,166,148,.3);
}
.footer-bottom-inner{
  max-width:var(--shell-wide);
  margin:0 auto;
  padding:16px var(--pad-x) 24px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:8px 20px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--sage);
}
.footer-legal{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px}
.footer-copy{color:rgba(244,239,226,.75)}
.footer-icp{color:var(--sage)}
.footer-disclaimer{color:rgba(127,166,148,.85)}

/* ---------------- 响应式 ---------------- */
@media (max-width:1180px){
  .batch-time{display:none}
}

@media (max-width:1023px){
  :root{--header-offset:clamp(104px,16vw,132px)}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;
    top:calc(100% + 2px);left:0;right:0;
    display:none;
    padding:10px clamp(14px,4vw,24px) 18px;
    background:var(--ink-deep);
    border-top:2px solid var(--mid);
    border-bottom:3px solid var(--cyan);
    box-shadow:0 8px 0 rgba(8,18,15,.45);
    max-height:calc(100vh - 150px);
    overflow-y:auto;
    z-index:205;
  }
  .site-nav[data-open]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{flex:1 1 auto}
  .nav-link{
    display:block;
    padding:13px 10px;
    font-size:14px;letter-spacing:.12em;
    color:rgba(244,239,226,.86);
    border-bottom:1px solid rgba(127,166,148,.25);
    border-left:3px solid transparent;
    border-top:0;
  }
  .nav-link:hover,.nav-link:focus-visible{
    color:var(--cyan);
    border-bottom-color:rgba(127,166,148,.25);
    border-left-color:var(--cyan);
    background:rgba(18,240,200,.08);
  }
  .nav-link[aria-current="page"]{
    background:var(--cyan);
    color:var(--ink-deep);
    border-left-color:var(--ink-deep);
    border-bottom-color:rgba(8,18,15,.2);
  }
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
  .footer-tagline{max-width:34ch}
}

@media (max-width:900px){
  .split,.split--reverse{grid-template-columns:1fr}
  .footer-contact{grid-column:1 / -1}
}

@media (max-width:640px){
  .brand-sub{display:none}
  .header-bar{padding:14px 0 8px;gap:10px}
  .site-header[data-scrolled] .header-bar{padding:8px 0 6px}
  .batch-tag{font-size:10px;letter-spacing:.1em;padding:3px 7px}
  .breadcrumb-list{font-size:10px;letter-spacing:.1em}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-contact,.footer-brand{grid-column:auto}
  .footer-bottom-inner{flex-direction:column;align-items:flex-start}
  .btn{width:100%;justify-content:center}
}

@media (max-width:420px){
  .nav-toggle-text{display:none}
  .nav-toggle{padding:8px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  .status-dot{animation:none;box-shadow:0 0 0 3px rgba(18,240,200,.25)}
  .header-progress{transition:none}
  .btn:hover,.footer-link--cta:hover,.brand:hover .brand-mark{transform:none}
}