:root{
  --ink:#07090D;
  --panel:#121722;
  --panel-deep:#0C1017;
  --red:#E8402F;
  --red-deep:#8C211C;
  --cyan:#34D8E8;
  --lime:#B8FF4A;
  --amber:#F6B73C;
  --white:#F5F8FC;
  --silver:#9AA6B8;
  --line:#2B3442;
  --wrap:1240px;
  --gutter:clamp(16px,4vw,40px);
  --mono:ui-monospace,SFMono-Regular,"JetBrains Mono","Roboto Mono",Menlo,Consolas,monospace;
  --sans:"PingFang SC","Noto Sans SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,picture,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
main{display:block}
::selection{background:var(--red);color:#fff}

body{
  margin:0;
  min-height:100%;
  background-color:var(--ink);
  background-image:
    radial-gradient(1100px 620px at 88% -12%,rgba(140,33,28,.42),transparent 70%),
    radial-gradient(900px 540px at -12% 6%,rgba(52,216,232,.13),transparent 68%),
    radial-gradient(760px 700px at 50% 118%,rgba(232,64,47,.12),transparent 70%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  color:var(--white);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}

.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(32px,5.5vw,68px)}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  margin-bottom:14px;
  font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--red)}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;
  border:1px solid transparent;border-radius:0;
  font-size:14px;font-weight:700;letter-spacing:.02em;line-height:1.2;
  text-decoration:none;cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{background:var(--red);color:#fff;box-shadow:inset 0 -2px 0 rgba(0,0,0,.28)}
.btn-primary:hover{background:#F25240;transform:translateY(-1px)}
.btn-primary:active{transform:none}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--white)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(52,216,232,.07)}
.btn-sm{padding:9px 14px;font-size:13px}

/* ---------- 标签 / 状态 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 8px;border:1px solid var(--line);
  font-family:var(--mono);font-size:11px;letter-spacing:.06em;
  color:var(--silver);background:rgba(52,216,232,.05);
}
.tag--red{border-color:rgba(232,64,47,.55);color:#FF8B7D;background:rgba(232,64,47,.12)}
.tag--lime{border-color:rgba(184,255,74,.42);color:var(--lime);background:rgba(184,255,74,.08)}

.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 10px;border:1px solid var(--line);
  font-family:var(--mono);font-size:11.5px;letter-spacing:.04em;
  color:var(--silver);background:rgba(52,216,232,.06);
  white-space:nowrap;
}
.chip-dot{width:6px;height:6px;background:var(--lime);box-shadow:0 0 0 3px rgba(184,255,74,.16)}
.chip-status{color:#C9D3E1}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--mono);font-size:11.5px;color:#6E7A8C}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:#3A4558}
.crumbs a{color:var(--silver);border-bottom:1px solid transparent;transition:color .18s,border-color .18s}
.crumbs a:hover{color:var(--cyan);border-bottom-color:currentColor}

/* ---------- 布局助手 ---------- */
.split{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:clamp(18px,3vw,36px);align-items:start}
.deck{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px}

/* ---------- 直角数据面板 ---------- */
.panel{
  position:relative;
  padding:clamp(16px,2.4vw,26px);
  background:linear-gradient(180deg,#111722,#0C1018 90%);
  border:1px solid var(--line);
}
.panel-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-bottom:12px;margin-bottom:16px;
  border-bottom:1px solid var(--line);
}
.panel-title{font-size:15px;font-weight:800;letter-spacing:.02em;line-height:1.4}

/* ---------- 数据表 ---------- */
.table-scroll{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
.data-table{width:100%;border-collapse:collapse;font-size:14px}
.data-table th{
  padding:10px 12px;text-align:left;white-space:nowrap;
  font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.08em;text-transform:uppercase;
  color:var(--silver);border-bottom:1px solid var(--line);
}
.data-table td{padding:11px 12px;border-bottom:1px solid rgba(43,52,66,.6);color:#D6DEEA;vertical-align:middle}
.data-table tbody tr:hover{background:rgba(52,216,232,.05)}
.data-table .num{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--lime);letter-spacing:.02em}

/* ---------- 主题筛选 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px}
.filter-btn{
  padding:8px 13px;border:1px solid var(--line);background:transparent;
  font-size:12.5px;font-weight:700;color:var(--silver);cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.filter-btn:hover{color:var(--white);border-color:#3B4759;background:rgba(52,216,232,.06)}
.filter-btn[aria-pressed="true"]{background:var(--red);border-color:var(--red);color:#fff}
.filter-item[hidden]{display:none}
@keyframes itemIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.filter-item.is-entering{animation:itemIn .2s var(--ease) both}

/* ---------- 图片容器基础（页面阶段放置图像） ---------- */
.media-frame{
  position:relative;display:block;width:100%;aspect-ratio:16/10;overflow:hidden;
  border:1px solid var(--line);
  background:
    radial-gradient(120% 90% at 82% -6%,rgba(140,33,28,.55),transparent 62%),
    radial-gradient(96% 84% at 0% 104%,rgba(52,216,232,.18),transparent 64%),
    #0B0F16;
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(43,52,66,.55) 1px,transparent 1px),
    linear-gradient(90deg,rgba(43,52,66,.55) 1px,transparent 1px);
  background-size:36px 36px;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:4/5}
.media-cap{margin-top:9px;font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:#6E7A8C}

/* ---------- 显现与返回顶部 ---------- */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .26s var(--ease),transform .26s var(--ease)}
[data-reveal].is-visible{opacity:1;transform:none}

.top-btn{
  position:fixed;right:16px;bottom:16px;z-index:60;
  display:none;place-items:center;
  width:46px;height:46px;padding:0;
  background:var(--panel);border:1px solid var(--line);color:var(--cyan);
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;cursor:pointer;
}
.top-btn.is-on{display:grid}
.top-btn:hover{border-color:var(--cyan);background:#16202D}

/* ================= 头部 ================= */
.skip-link{
  position:fixed;left:12px;top:-80px;z-index:300;
  padding:10px 16px;background:var(--lime);color:#07090D;
  font-weight:800;font-size:14px;letter-spacing:.02em;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:10px}

.site-header{
  position:sticky;top:0;z-index:100;
  background:#080B11;
  border-bottom:1px solid var(--line);
}

.hdr-top{background:#0A0E15;border-bottom:1px solid rgba(43,52,66,.75);font-size:12px}
.hdr-top-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;padding-block:6px}
.hdr-coord{flex:0 0 auto;font-size:10.5px;letter-spacing:.16em;color:#5A6579}
.hdr-ticker{flex:1 1 auto;margin:0;text-align:center;font-size:12px;letter-spacing:.06em;color:var(--silver)}

.hdr-main{background:linear-gradient(180deg,#10151E,#0A0E15 88%)}
.hdr-main-inner{display:flex;align-items:center;gap:clamp(12px,2.4vw,28px);padding-block:13px;transition:padding .2s var(--ease)}
.site-header.is-condensed .hdr-main-inner{padding-block:8px}

.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--white)}
.brand-mark{
  position:relative;flex:0 0 42px;width:42px;height:42px;
  background:linear-gradient(150deg,#161C28,#0A0E15);
  border:1px solid var(--line);
  overflow:hidden;
}
.brand-mark::before{
  content:"";position:absolute;left:10px;top:11px;width:20px;height:20px;
  border-left:3px solid var(--red);border-bottom:3px solid var(--red);
  transform:skewX(-14deg);
}
.brand-mark::after{
  content:"";position:absolute;right:7px;top:8px;width:14px;height:3px;
  background:var(--cyan);transform:rotate(-45deg);transform-origin:right center;
}
.brand-text{display:flex;flex-direction:column;gap:3px;line-height:1.15;min-width:0}
.brand-name{font-size:19px;font-weight:800;letter-spacing:.02em}
.brand-sub{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--silver);white-space:nowrap}

.hdr-notice{
  flex:1 1 auto;max-width:430px;min-width:0;
  padding-left:10px;border-left:2px solid var(--amber);
  font-size:12.5px;line-height:1.55;color:#F2C46B;
}
.hdr-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 12px;
  background:transparent;border:1px solid var(--line);color:var(--white);
  font-size:13px;font-weight:700;letter-spacing:.04em;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--red);color:#fff}
.nav-toggle-bars{position:relative;display:block;width:16px;height:12px}
.nav-toggle-bars::before,.nav-toggle-bars::after{
  content:"";position:absolute;left:0;right:0;height:2px;background:var(--red);
  transition:transform .18s var(--ease);
}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{bottom:0}
.site-header[data-open] .nav-toggle-bars::before{transform:translateY(5px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars::after{transform:translateY(-5px) rotate(-45deg)}

.site-nav{background:#0B0F16;border-top:1px solid rgba(43,52,66,.85)}
.rail{
  display:flex;align-items:stretch;gap:2px;
  overflow-x:auto;scroll-snap-type:x proximity;
  scrollbar-width:none;-webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{display:none}
.rail-item{flex:0 0 auto;display:flex}
.rail-link{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  padding:13px 18px;
  font-size:14px;font-weight:700;white-space:nowrap;color:#93A0B4;
  border-bottom:2px solid transparent;scroll-snap-align:start;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.rail-link:hover{color:var(--white);background:rgba(232,64,47,.10)}
.rail-link[aria-current="page"]{
  color:#fff;border-bottom-color:var(--red);
  background:linear-gradient(180deg,transparent,rgba(232,64,47,.22));
}
.rail-index{font-size:10.5px;letter-spacing:.1em;color:#4A5568}
.rail-link[aria-current="page"] .rail-index{color:var(--cyan)}

.hdr-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:rgba(43,52,66,.65);z-index:2}
.hdr-progress-bar{
  display:block;width:100%;height:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--red) 0%,#FF7A4D 42%,var(--cyan) 76%,var(--lime) 100%);
  transition:transform .12s linear;
}

/* ================= 页脚 ================= */
.site-footer{
  position:relative;
  margin-top:clamp(44px,7vw,88px);
  background:#0A0D13;
  border-top:1px solid var(--line);
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--red) 0%,var(--red-deep) 26%,rgba(140,33,28,0) 62%,var(--cyan) 100%);
}
.ftr-glow{
  position:absolute;right:-160px;top:-180px;width:520px;height:520px;pointer-events:none;
  background:radial-gradient(circle,rgba(140,33,28,.34),transparent 68%);
}
.ftr-top{
  position:relative;
  display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);
  gap:clamp(24px,4vw,56px);
  padding-block:clamp(30px,4.6vw,54px);
}
.ftr-brand{display:flex;flex-direction:column;gap:16px;align-items:flex-start}
.ftr-summary{max-width:42ch;font-size:14.5px;line-height:1.75;color:var(--silver)}
.ftr-meta{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:#5A6579}

.ftr-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(18px,3vw,28px)}
.ftr-col-title{
  padding-bottom:8px;margin-bottom:12px;
  border-bottom:1px solid var(--line);
  font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;
  color:var(--cyan);
}
.ftr-list{display:grid;gap:9px}
.ftr-list a{
  display:inline-block;font-size:14px;color:var(--silver);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease),padding-left .18s var(--ease);
}
.ftr-list a:hover{color:var(--white);border-bottom-color:var(--red);padding-left:4px}

.ftr-contact{
  position:relative;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));
  gap:1px;background:var(--line);border:1px solid var(--line);
}
.ftr-cell{display:flex;flex-direction:column;gap:5px;padding:15px 16px;background:#0E131B}
.ftr-label{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:#61708A}
.ftr-value{font-size:14px;font-weight:600;color:#DCE3EE;word-break:break-word}

.ftr-note{
  position:relative;
  margin-top:16px;padding-left:10px;border-left:2px solid var(--amber);
  font-size:12.5px;line-height:1.7;color:var(--silver);
}

.ftr-bottom{
  position:relative;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 26px;
  margin-top:22px;padding-block:18px;
  border-top:1px solid var(--line);
  font-size:12px;color:#6E7A8C;
}
.ftr-legal{letter-spacing:.08em;color:#6E7A8C}
.ftr-legal-links{display:flex;flex-wrap:wrap;gap:16px}
.ftr-legal-links a{color:var(--silver);border-bottom:1px solid transparent;transition:color .18s,border-color .18s}
.ftr-legal-links a:hover{color:var(--cyan);border-bottom-color:currentColor}
.ftr-copy{color:#6E7A8C}

/* ================= 响应式 ================= */
@media (max-width:1080px){
  .hdr-notice{display:none}
}

@media (max-width:900px){
  .split{grid-template-columns:1fr}
  .ftr-top{grid-template-columns:1fr}
}

@media (max-width:860px){
  .nav-toggle{display:inline-flex}
  .hdr-coord,.hdr-ticker{display:none}
  .hdr-top-inner{justify-content:center}
  .site-header.is-condensed .hdr-main-inner{padding-block:13px}
  .brand-mark{flex-basis:38px;width:38px;height:38px}
  .brand-mark::before{left:9px;top:10px;width:18px;height:18px}
  .brand-name{font-size:17px}
  .brand-sub{font-size:9.5px;letter-spacing:.1em}

  .site-nav{display:none}
  .site-header[data-open] .site-nav{display:block;border-top:1px solid var(--line)}
  .site-nav .wrap{padding-inline:0}
  .rail{flex-direction:column;overflow:visible;scroll-snap-type:none;padding-block:6px 10px}
  .rail-item{width:100%}
  .rail-link{
    width:100%;padding:13px var(--gutter);
    border-bottom:1px solid rgba(43,52,66,.55);
    border-left:3px solid transparent;
    border-radius:0;
  }
  .rail-link[aria-current="page"]{
    background:rgba(232,64,47,.14);
    border-left-color:var(--red);
    border-bottom-color:rgba(43,52,66,.55);
  }
  .ftr-nav{grid-template-columns:1fr 1fr}
  .ftr-bottom{justify-content:flex-start}
}

@media (max-width:560px){
  body{font-size:15px}
  .hdr-actions .btn-sm{padding:8px 11px;font-size:12px}
  .brand-sub{display:none}
  .ftr-nav{grid-template-columns:1fr;gap:20px}
  .top-btn{right:12px;bottom:12px}
  .data-table{font-size:13px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  [data-reveal]{opacity:1;transform:none}
  .hdr-progress-bar{transition:none}
}