:root{
  --pitch-950:#08110D;
  --pitch-900:#0E1A14;
  --pitch-800:#16261E;
  --line-moss:#2C4438;
  --lime-500:#C6F24E;
  --lime-200:#E9FFB8;
  --paper-cream:#F4EBD9;
  --paper-sand:#DCCDB0;
  --card-red:#FF4B3E;
  --card-yellow:#FFC53D;
  --text-mute:#9DB3A6;
  --focus-cyan:#7FE7D0;
  --rail-w:88px;
  --shell-pad:clamp(20px,4vw,64px);
  --font-display:"Barlow Condensed","Arial Narrow","Helvetica Neue",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
@media (min-width:1280px){ :root{ --rail-w:252px; } }
@media (max-width:899px){ :root{ --rail-w:0px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; }
html:focus-within{ scroll-behavior:smooth; }

body{
  margin:0;
  padding-left:var(--rail-w);
  padding-right:52px;
  min-height:100vh;
  background:
    radial-gradient(120% 80% at 100% 0%, rgba(44,68,56,.38) 0%, rgba(8,17,13,0) 62%),
    var(--pitch-950);
  color:var(--paper-cream);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{ max-width:100%; height:auto; display:block; }
a{ color:var(--lime-200); }
p{ margin:0 0 1em; }
ul,ol{ margin:0; padding:0; }

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:900;
  letter-spacing:-.01em;
  line-height:1.05;
  margin:0 0 .5em;
  text-wrap:balance;
}
h1{ font-size:clamp(2.4rem,5.4vw,4.4rem); }
h2{ font-size:clamp(1.7rem,3.2vw,2.7rem); }
h3{ font-size:clamp(1.2rem,1.9vw,1.6rem); letter-spacing:0; }

::selection{ background:var(--lime-500); color:var(--pitch-950); }

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

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;
  left:calc(var(--rail-w) + 16px);
  top:-96px;
  z-index:300;
  display:inline-block;
  padding:12px 22px;
  background:var(--lime-500);
  color:var(--pitch-950);
  font-weight:700;
  font-size:14px;
  letter-spacing:.06em;
  text-decoration:none;
  transition:top 160ms ease;
}
.skip-link:focus{ top:14px; }

/* ---------- 侧轨头部 ---------- */
.site-header{
  position:fixed;
  top:0; left:0; bottom:0;
  width:var(--rail-w);
  z-index:90;
  display:flex;
  flex-direction:column;
  background:linear-gradient(180deg,#0C1711 0%,#08110D 100%);
  border-right:1px solid var(--line-moss);
  overflow:hidden;
}
.site-header::before{
  content:"";
  position:absolute;
  top:0; left:0;
  width:100%; height:3px;
  background:linear-gradient(90deg,var(--lime-500) 0%,rgba(198,242,78,0) 100%);
  pointer-events:none;
}

.brand{
  flex:none;
  display:flex;
  align-items:center;
  gap:10px;
  padding:16px 14px;
  color:var(--paper-cream);
  text-decoration:none;
  border-bottom:1px solid var(--line-moss);
  transition:background-color 160ms ease;
}
.brand:hover{ background:rgba(198,242,78,.07); }
.brand-mark{
  flex:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px; height:34px;
  background:var(--lime-500);
  color:var(--pitch-950);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.02em;
}
.brand-text{ display:flex; flex-direction:column; overflow:hidden; white-space:nowrap; }
.brand-name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:17px;
  line-height:1.15;
  letter-spacing:.05em;
}
.brand-tag{
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.2em;
  color:var(--text-mute);
}
@media (max-width:1279px){
  .brand{ justify-content:center; padding:16px 8px; }
  .brand-name,.brand-tag{ display:none; }
}

.rail-nav{
  flex:1 1 auto;
  min-height:0;
  padding:10px 0;
  overflow-y:auto;
  overflow-x:hidden;
  scrollbar-width:thin;
  scrollbar-color:var(--line-moss) transparent;
}
.rail-list{ list-style:none; margin:0; padding:0; }
.rail-link{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:48px;
  padding:0 14px;
  color:var(--text-mute);
  text-decoration:none;
  border-left:2px solid transparent;
  transition:color 160ms ease,background-color 160ms ease,border-color 160ms ease;
}
.rail-index{
  flex:none;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:inherit;
  opacity:.75;
}
.rail-label{
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  white-space:nowrap;
  max-width:0;
  opacity:0;
  overflow:hidden;
  clip-path:inset(0 100% 0 0);
  transition:max-width 200ms ease,opacity 160ms ease,clip-path 220ms ease;
}
@media (min-width:1280px){
  .rail-label{ max-width:14rem; opacity:1; clip-path:inset(0 0 0 0); }
}
.rail-link:hover,.rail-link:focus-visible{
  color:var(--paper-cream);
  background:rgba(198,242,78,.09);
  border-left-color:var(--lime-500);
}
.rail-link:hover .rail-label,
.rail-link:focus-visible .rail-label{
  max-width:14rem;
  opacity:1;
  clip-path:inset(0 0 0 0);
}
.rail-link[aria-current="page"]{
  color:var(--lime-200);
  background:rgba(198,242,78,.12);
  border-left-color:var(--lime-500);
  font-weight:700;
}
.rail-link[aria-current="page"] .rail-index{ color:var(--lime-500); opacity:1; }
@media (max-width:1279px){
  .rail-link{ justify-content:center; padding:0 6px; gap:0; }
  .rail-link:hover .rail-label,
  .rail-link:focus-visible .rail-label{ max-width:0; opacity:0; }
}

.rail-foot{
  flex:none;
  padding:14px;
  border-top:1px solid var(--line-moss);
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.14em;
  color:#5C6F63;
  white-space:nowrap;
  overflow:hidden;
}
@media (max-width:1279px){ .rail-foot{ display:none; } }

/* ---------- 移动抽屉按钮 ---------- */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  min-width:48px;
  min-height:48px;
  padding:0 12px;
  background:transparent;
  border:1px solid var(--line-moss);
  color:var(--paper-cream);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  cursor:pointer;
}
.nav-toggle-text{ line-height:1; }
.nav-toggle-bars{ display:inline-flex; flex-direction:column; gap:4px; width:16px; }
.nav-toggle-bars span{
  display:block;
  height:2px;
  background:var(--lime-500);
  transition:transform 200ms ease,opacity 200ms ease;
}
.site-header[data-open="true"] .nav-toggle-bars span:nth-child(1){ transform:translateY(6px) rotate(45deg); }
.site-header[data-open="true"] .nav-toggle-bars span:nth-child(2){ opacity:0; }
.site-header[data-open="true"] .nav-toggle-bars span:nth-child(3){ transform:translateY(-6px) rotate(-45deg); }

/* ---------- 悬浮快捷条 ---------- */
.quickbar{
  position:fixed;
  right:0;
  top:50%;
  transform:translateY(-50%);
  z-index:75;
  display:flex;
  flex-direction:column;
  gap:1px;
}
.quickbar a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:14px 8px;
  writing-mode:vertical-rl;
  font-size:12px;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--text-mute);
  text-decoration:none;
  background:rgba(14,26,20,.94);
  border:1px solid var(--line-moss);
  border-right:0;
  transition:color 140ms ease,background-color 140ms ease,border-color 140ms ease;
}
.quickbar a:hover,.quickbar a:focus-visible{
  background:var(--lime-500);
  color:var(--pitch-950);
  border-color:var(--lime-500);
}

/* ---------- 进度条 ---------- */
.scroll-progress{
  position:fixed;
  top:0;
  left:var(--rail-w);
  right:52px;
  height:2px;
  transform:scaleX(0);
  transform-origin:left center;
  background:linear-gradient(90deg,var(--lime-500) 0%,var(--focus-cyan) 100%);
  z-index:95;
  pointer-events:none;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,9vw,112px);
  padding:clamp(32px,5vw,64px) var(--shell-pad) 28px;
  background:var(--pitch-950);
  border-top:1px solid var(--line-moss);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px; left:0;
  width:min(320px,62%);
  height:2px;
  background:var(--lime-500);
}
.footer-inner{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr 1.3fr;
  gap:clamp(20px,3vw,40px);
  max-width:1180px;
  margin:0 auto;
}
.footer-mark{
  display:block;
  font-family:var(--font-display);
  font-weight:900;
  font-size:24px;
  letter-spacing:.04em;
  color:var(--paper-cream);
}
.footer-note{
  margin:12px 0 0;
  max-width:25ch;
  font-size:14px;
  line-height:1.7;
  color:var(--text-mute);
}
.footer-meta{
  margin:14px 0 0;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.12em;
  color:#5C6F63;
}
.footer-title{
  margin:0 0 16px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--paper-cream);
}
.footer-title::after{
  content:"";
  display:block;
  width:22px;
  height:1px;
  margin-top:9px;
  background:var(--lime-500);
}
.footer-col ul{ list-style:none; margin:0; padding:0; display:grid; gap:10px; }
.footer-col a{
  font-size:14px;
  color:var(--text-mute);
  text-decoration:none;
  transition:color 140ms ease;
}
.footer-col a:hover,.footer-col a:focus-visible{
  color:var(--lime-200);
  text-decoration:underline;
  text-underline-offset:4px;
}
.footer-contact-list{ list-style:none; margin:0; padding:0; display:grid; gap:10px; }
.footer-contact-list li{
  font-size:14px;
  line-height:1.6;
  color:var(--text-mute);
  word-break:break-word;
}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  max-width:1180px;
  margin:clamp(28px,4vw,48px) auto 0;
  padding-top:18px;
  border-top:1px solid var(--line-moss);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:#6C8074;
}
.footer-base p{ margin:0; }
.footer-base-note{ color:#4E6156; }

/* ---------- 通用布局 ---------- */
#main-content{ display:block; }
.wrap{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 var(--shell-pad);
}
.wrap--narrow{ max-width:720px; }

.grid{ display:grid; gap:clamp(16px,2.4vw,32px); }
.grid--2{ grid-template-columns:repeat(2,minmax(0,1fr)); }
.grid--3{ grid-template-columns:repeat(3,minmax(0,1fr)); }
@media (max-width:899px){
  .grid--2,.grid--3{ grid-template-columns:minmax(0,1fr); }
}

.prose{ max-width:620px; line-height:1.75; }
.prose p:last-child{ margin-bottom:0; }

.h-display{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(2.6rem,6vw,5.2rem);
  line-height:.95;
  letter-spacing:-.02em;
  margin:0 0 .35em;
}
.h-section{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.8rem,3.6vw,2.8rem);
  line-height:1.02;
  letter-spacing:-.01em;
  margin:0 0 .5em;
}
.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}

/* ---------- 展签 / 面板 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin:0 0 16px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--text-mute);
}
.tag::before{
  content:"";
  flex:none;
  width:22px;
  height:1px;
  background:var(--lime-500);
}
.tag--paper{ color:#4A5A4E; }
.tag--paper::before{ background:#8A6A2F; }

.panel{
  position:relative;
  padding:clamp(20px,3.2vw,40px);
  background:var(--pitch-900);
  border:1px solid var(--line-moss);
}
.panel--paper{
  background:var(--paper-cream);
  color:var(--pitch-950);
  border-color:var(--paper-sand);
}
.panel--paper h2,.panel--paper h3{ color:var(--pitch-950); }
.panel--paper a{ color:#25402F; }
.panel--glass{
  background:linear-gradient(158deg,rgba(233,255,184,.10) 0%,rgba(22,38,30,.66) 100%);
  border:1px solid rgba(198,242,78,.22);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.panel--interactive{ transition:transform 160ms ease,box-shadow 160ms ease,border-color 160ms ease; }
.panel--interactive:hover{
  transform:translateY(-4px);
  box-shadow:0 20px 42px rgba(0,0,0,.46);
  border-color:var(--lime-500);
}

.card{
  position:relative;
  padding:clamp(18px,2.2vw,26px);
  background:var(--pitch-800);
  border:1px solid var(--line-moss);
  color:var(--paper-cream);
  transition:transform 160ms ease,box-shadow 160ms ease,border-color 160ms ease;
}
.card:hover,.card:focus-within{
  transform:translateY(-4px);
  box-shadow:0 18px 36px rgba(0,0,0,.45);
  border-color:var(--lime-500);
}
.card:hover .tag,.card:focus-within .tag{ color:var(--lime-500); }

.rule{
  height:1px;
  border:0;
  margin:clamp(24px,4vw,48px) 0;
  background:var(--line-moss);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:48px;
  padding:0 24px;
  border:1px solid transparent;
  font-family:var(--font-display);
  font-weight:700;
  font-size:15px;
  letter-spacing:.08em;
  text-transform:uppercase;
  text-decoration:none;
  cursor:pointer;
  transition:background-color 160ms ease,color 160ms ease,border-color 160ms ease,transform 160ms ease;
}
.btn--primary{ background:var(--lime-500); color:var(--pitch-950); }
.btn--primary:hover{ background:var(--lime-200); transform:translateY(-2px); }
.btn--ghost{
  background:transparent;
  color:var(--paper-cream);
  border-color:var(--line-moss);
}
.btn--ghost:hover{ border-color:var(--lime-500); color:var(--lime-200); }
.btn--sm{ min-height:40px; padding:0 16px; font-size:13px; }

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 0;
  margin:0 0 clamp(18px,3vw,28px);
  padding:0;
  list-style:none;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--text-mute);
}
.crumbs li{ display:inline-flex; align-items:center; }
.crumbs li + li::before{ content:"/"; margin:0 8px; color:var(--line-moss); }
.crumbs a{ color:var(--text-mute); text-decoration:none; }
.crumbs a:hover{ color:var(--lime-500); }
.crumbs [aria-current="page"]{ color:var(--paper-cream); }

/* ---------- 状态点 / 标签 ---------- */
.dot{
  display:inline-block;
  width:9px; height:9px;
  flex:none;
  border-radius:50%;
  background:var(--lime-500);
}
.dot--red{ background:var(--card-red); }
.dot--yellow{ background:var(--card-yellow); }

.badge{
  display:inline-block;
  padding:3px 9px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  background:var(--paper-sand);
  color:var(--pitch-950);
}
.badge--red{ background:var(--card-red); color:var(--paper-cream); }
.badge--yellow{ background:var(--card-yellow); color:var(--pitch-950); }

/* ---------- 图片容器 ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  background:var(--pitch-800);
  border:1px solid var(--line-moss);
}
.media img{ width:100%; height:100%; object-fit:cover; }
.media--16x9{ aspect-ratio:16/9; }
.media--4x3{ aspect-ratio:4/3; }
.media--1x1{ aspect-ratio:1/1; }
.media--slant{ clip-path:polygon(0 0,100% 0,100% 88%,0 100%); }
.media-cap{
  margin:10px 0 0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--text-mute);
}

/* ---------- 表格 / 横向滚动 ---------- */
.scroll-x{
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);
}
.table{
  width:100%;
  min-width:520px;
  border-collapse:collapse;
  font-size:14px;
}
.table th,.table td{
  padding:12px 14px;
  text-align:left;
  border-bottom:1px solid var(--line-moss);
  vertical-align:top;
}
.table th{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--text-mute);
}
.table tbody tr:nth-child(even){ background:rgba(220,205,176,.05); }

/* ---------- 折叠面板 ---------- */
details{
  border:1px solid var(--line-moss);
  background:var(--pitch-800);
  padding:0;
}
details + details{ margin-top:-1px; }
details summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:52px;
  padding:12px 18px;
  cursor:pointer;
  font-weight:600;
  list-style:none;
}
details summary::-webkit-details-marker{ display:none; }
details summary::after{
  content:"▸";
  flex:none;
  color:var(--lime-500);
  transition:transform 220ms ease;
}
details[open] summary::after{ transform:rotate(90deg); }
details > :not(summary){ padding:0 18px 18px; margin:0; }

.tight-list{ list-style:none; margin:0; padding:0; display:grid; gap:10px; }
.tight-list li{ font-size:14px; line-height:1.7; color:var(--text-mute); }

.sr-only{
  position:absolute;
  width:1px; height:1px;
  margin:-1px; padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

/* ---------- 移动端 ---------- */
@media (max-width:1023px){
  .footer-inner{ grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (max-width:899px){
  body{
    padding-left:0;
    padding-right:0;
    padding-top:56px;
    padding-bottom:60px;
  }
  html.is-nav-open,
  html.is-nav-open body{ overflow:hidden; }

  .site-header{
    inset:0 0 auto 0;
    width:auto;
    height:56px;
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding:0 16px;
    border-right:0;
    border-bottom:1px solid var(--line-moss);
    overflow:visible;
  }
  .brand{ padding:0; border-bottom:0; }
  .brand-name,.brand-tag{ display:block; }
  .brand-tag{ font-size:8px; }
  .rail-foot{ display:none; }

  .rail-nav{
    position:fixed;
    left:0; right:0;
    top:56px; bottom:0;
    z-index:92;
    padding:12px var(--shell-pad) 40px;
    background:var(--pitch-950);
    border-top:1px solid var(--line-moss);
    overflow-y:auto;
    transform:translateX(-102%);
    transition:transform 220ms ease;
  }
  .site-header[data-open="true"] .rail-nav{ transform:translateX(0); }
  .rail-link{
    justify-content:flex-start;
    gap:14px;
    min-height:56px;
    padding:0 4px;
    font-size:17px;
    border-left:0;
    border-bottom:1px solid var(--line-moss);
  }
  .rail-link:hover,.rail-link:focus-visible{ border-left-color:transparent; }
  .rail-link[aria-current="page"]{ border-left-color:transparent; }
  .rail-label{ max-width:14rem; opacity:1; clip-path:inset(0 0 0 0); font-size:17px; }
  .rail-index{ font-size:12px; opacity:.6; }

  .nav-toggle{ display:inline-flex; }

  .quickbar{
    top:auto; bottom:0; left:0; right:0;
    transform:none;
    flex-direction:row;
    gap:0;
    background:var(--pitch-900);
    border-top:1px solid var(--line-moss);
  }
  .quickbar a{
    flex:1 1 0;
    writing-mode:horizontal-tb;
    min-height:56px;
    padding:0;
    border:0;
    border-left:1px solid var(--line-moss);
    background:transparent;
    font-size:13px;
    letter-spacing:.1em;
    color:var(--paper-cream);
  }
  .quickbar a:first-child{ border-left:0; }
  .quickbar a:hover,.quickbar a:focus-visible{ background:rgba(198,242,78,.14); color:var(--lime-200); }

  .scroll-progress{ left:0; right:0; top:56px; }
  .skip-link{ left:16px; }
  details > :not(summary){ padding:0 14px 16px; }
}
@media (max-width:599px){
  .footer-inner{ grid-template-columns:minmax(0,1fr); }
  .footer-base{ flex-direction:column; align-items:flex-start; }
}

/* ---------- 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;
  }
  .panel--interactive:hover,
  .card:hover,
  .btn:hover{ transform:none; }
}