:root{
  --ink:#07130F;
  --panel:#0E241E;
  --line:#23443A;
  --signal:#35F2B0;
  --mint:#9CF6D4;
  --sand:#D8B36A;
  --paper:#F2F7F3;
  --muted:#8FA79C;
  --alert:#E56B4A;
  --shadow:#030A08;

  --bar-h:64px;
  --rail-w:96px;
  --container:1360px;

  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","JetBrains Mono","Cascadia Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--bar-h) + 16px);
}

body{
  margin:0;
  padding-top:var(--bar-h);
  min-height:100vh;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

body[data-nav-locked="true"]{overflow:hidden;}

h1,h2,h3,h4,h5{
  margin:0 0 .6em;
  font-weight:900;
  line-height:1.14;
  letter-spacing:-.022em;
  color:var(--paper);
}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.2em;}
img,svg{max-width:100%;}
a{color:var(--mint);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--signal);}
button{font:inherit;color:inherit;}
strong{font-weight:800;}
hr{border:0;border-top:2px solid var(--line);margin:0;}

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

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.hard-shadow{box-shadow:6px 6px 0 0 var(--shadow);}

/* ---------- 基础布局 ---------- */
.container{
  width:100%;
  max-width:var(--container);
  margin-inline:auto;
  padding-inline:clamp(18px,4vw,56px);
}

.panel{
  background:var(--panel);
  border:2px solid var(--line);
  padding:clamp(18px,3vw,32px);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--sand);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--sand);flex:none;}

.section-title{
  font-size:clamp(1.8rem,3vw,3rem);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.1;
  margin:0 0 .5em;
}

.lead{font-size:clamp(1rem,1.4vw,1.15rem);line-height:1.85;color:var(--muted);}

/* ---------- 跳过链接 ---------- */
.skip-link{
  position:fixed;
  top:0;
  left:50%;
  z-index:200;
  transform:translate(-50%,-140%);
  background:var(--signal);
  color:#04211A;
  font-weight:800;
  font-size:14px;
  letter-spacing:.02em;
  padding:.85em 1.4em;
  border:2px solid #04211A;
  border-radius:2px;
  box-shadow:4px 4px 0 0 var(--shadow);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translate(-50%,10px);color:#04211A;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.85em 1.25em;
  border:2px solid var(--line);
  border-radius:2px;
  background:transparent;
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:.875rem;
  font-weight:700;
  line-height:1;
  letter-spacing:.02em;
  text-decoration:none;
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease);
}
.btn:hover{color:var(--paper);border-color:var(--signal);}
.btn--signal{
  background:var(--signal);
  border-color:var(--signal);
  color:#04211A;
  box-shadow:4px 4px 0 0 var(--shadow);
}
.btn--signal:hover{
  color:#04211A;
  background:var(--mint);
  border-color:var(--mint);
  transform:translate(-1px,-1px);
  box-shadow:6px 6px 0 0 var(--shadow);
}
.btn--signal:active{transform:translate(2px,2px);box-shadow:2px 2px 0 0 var(--shadow);}
.btn--ghost{background:var(--panel);color:var(--mint);border-color:var(--line);}
.btn--ghost:hover{background:#12312a;color:var(--signal);}
.btn--sm{padding:.6em .9em;font-size:.78rem;}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 8px;
  border:2px solid var(--line);
  background:var(--panel);
  color:var(--muted);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.06em;
  line-height:1.4;
  white-space:nowrap;
}
.tag--signal{background:var(--signal);border-color:var(--signal);color:#04211A;}
.tag--sand{color:var(--sand);border-color:rgba(216,179,106,.55);background:rgba(216,179,106,.07);}
.tag--alert{color:var(--alert);border-color:rgba(229,107,74,.55);background:rgba(229,107,74,.07);}

/* ---------- 面包屑 ---------- */
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  list-style:none;
  margin:0 0 clamp(20px,3vw,34px);
  padding:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--muted);
}
.breadcrumbs li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumbs li + li::before{content:"/";color:var(--line);}
.breadcrumbs a{color:var(--muted);}
.breadcrumbs a:hover{color:var(--signal);}
.breadcrumbs [aria-current="page"]{color:var(--paper);}

/* ---------- 图片容器 ---------- */
.media{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16 / 10;
  overflow:hidden;
  border:2px solid var(--line);
  background-color:var(--panel);
  background-image:repeating-linear-gradient(45deg,rgba(53,242,176,.045) 0 2px,transparent 2px 14px);
  box-shadow:6px 6px 0 0 var(--shadow);
  margin:0;
}
.media img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.82) contrast(1.06);
}
.media--wide{aspect-ratio:21 / 9;}
.media--tall{aspect-ratio:3 / 4;}
.media--square{aspect-ratio:1 / 1;}
.media-cap{
  position:absolute;
  left:0;
  bottom:0;
  right:0;
  padding:8px 12px;
  background:rgba(7,19,15,.82);
  border-top:2px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--muted);
}

/* ---------- 头部 ---------- */
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:70;
  height:var(--bar-h);
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,26px);
  padding-inline:clamp(14px,3vw,30px);
  background:var(--ink);
  border-bottom:2px solid var(--line);
  transition:border-color .2s var(--ease);
}
.site-header[data-scrolled="true"]{border-bottom-color:#2E5A4B;}

.header-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-2px;
  height:2px;
  overflow:hidden;
  pointer-events:none;
}
.header-progress span{
  display:block;
  height:100%;
  width:100%;
  background:var(--signal);
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .12s linear;
}

.header-brand{
  display:flex;
  flex-direction:column;
  gap:2px;
  min-width:0;
  color:var(--paper);
  text-decoration:none;
}
.header-brand:hover{color:var(--paper);}
.header-brand-name{
  display:flex;
  align-items:baseline;
  gap:5px;
  font-size:clamp(15px,1.6vw,17px);
  font-weight:900;
  letter-spacing:.06em;
  line-height:1.1;
  white-space:nowrap;
}
.header-brand-slice{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--signal);
}
.header-brand-tag{
  display:none;
  font-size:11px;
  letter-spacing:.16em;
  color:var(--muted);
  white-space:nowrap;
}

.header-meta{
  display:none;
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--muted);
  white-space:nowrap;
}
.status-dot{
  display:inline-block;
  width:7px;
  height:7px;
  margin-right:8px;
  border-radius:50%;
  background:var(--signal);
  box-shadow:0 0 0 3px rgba(53,242,176,.16);
  vertical-align:1px;
}

.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
  flex:none;
}
.header-cta{padding:.72em 1em;font-size:.78rem;}

.nav-toggle{
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  width:46px;
  height:46px;
  padding:0;
  background:var(--panel);
  border:2px solid var(--line);
  border-radius:2px;
  color:var(--paper);
  cursor:pointer;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--signal);background:#12312a;}
.nav-toggle-bar{
  display:block;
  width:18px;
  height:2px;
  background:currentColor;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 抽屉遮罩 ---------- */
.nav-scrim{
  position:fixed;
  inset:0;
  z-index:85;
  background:rgba(3,10,8,.72);
  border:0;
  padding:0;
  margin:0;
}
.nav-scrim[hidden]{display:none;}

/* ---------- 侧边轨道 / 抽屉 ---------- */
.rail{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  z-index:90;
  width:min(86vw,332px);
  display:flex;
  flex-direction:column;
  padding:18px 16px 22px;
  background:var(--panel);
  border-right:2px solid var(--line);
  box-shadow:8px 0 0 0 var(--shadow);
  overflow-y:auto;
  overscroll-behavior:contain;
  transform:translateX(-104%);
  visibility:hidden;
  transition:transform .28s var(--ease),visibility .28s linear;
}
.rail[data-open="true"]{transform:translateX(0);visibility:visible;box-shadow:8px 0 0 0 var(--shadow);}

.rail-brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding-bottom:14px;
  margin-bottom:14px;
  border-bottom:2px solid var(--line);
  color:var(--paper);
  text-decoration:none;
}
.rail-brand:hover{color:var(--paper);}
.rail-brand-mark{
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--signal);
  padding:5px 8px;
  border:2px solid var(--line);
  background:var(--ink);
}
.rail-brand-text{
  font-size:14px;
  font-weight:900;
  letter-spacing:.1em;
  color:var(--paper);
}

.rail-label{
  margin:0 0 8px;
  padding:0 2px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.26em;
  color:var(--muted);
}

.rail-list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:2px;
}
.rail-link{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  padding:12px 10px;
  border-left:2px solid transparent;
  color:var(--muted);
  text-decoration:none;
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.rail-link:hover{color:var(--paper);background:rgba(53,242,176,.07);}
.rail-num{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--sand);
  flex:none;
}
.rail-text{
  font-size:14px;
  font-weight:700;
  letter-spacing:.03em;
  white-space:nowrap;
}
.rail-link[aria-current="page"]{
  color:var(--paper);
  background:rgba(53,242,176,.1);
  border-left-color:var(--signal);
}
.rail-link[aria-current="page"] .rail-num{color:var(--signal);}

.rail-foot{
  margin-top:auto;
  padding-top:22px;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.rail-note{
  margin:0;
  font-family:var(--font-mono);
  font-size:10.5px;
  line-height:1.6;
  letter-spacing:.05em;
  color:var(--muted);
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  overflow:hidden;
  margin-top:clamp(56px,9vw,132px);
  padding-top:clamp(40px,6vw,76px);
  background:var(--panel);
  color:var(--muted);
  font-size:14px;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  width:min(240px,45%);
  height:2px;
  background:var(--signal);
}

.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(28px,4vw,52px);
  padding-bottom:clamp(32px,5vw,56px);
}

.footer-brand{
  display:inline-flex;
  flex-direction:column;
  gap:6px;
  color:var(--paper);
  text-decoration:none;
  margin-bottom:16px;
}
.footer-brand:hover{color:var(--paper);}
.footer-brand-mark{
  font-size:clamp(1.25rem,2.2vw,1.6rem);
  font-weight:900;
  letter-spacing:.06em;
  line-height:1.1;
}
.footer-brand-mark em{
  font-style:normal;
  font-family:var(--font-mono);
  font-size:.72em;
  font-weight:700;
  color:var(--signal);
  margin-left:.35em;
}
.footer-brand-sub{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
}
.footer-summary{
  max-width:36ch;
  margin:0 0 18px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--paper);
  opacity:.85;
}
.footer-stamp{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin:0;
  padding:6px 10px;
  border:2px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--sand);
}
.stamp-dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--sand);
  flex:none;
}

.footer-nav{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(20px,3vw,36px);
}
.footer-col-title{
  margin:0 0 16px;
  padding-bottom:10px;
  border-bottom:2px solid var(--line);
  font-family:var(--font-sans);
  font-size:12px;
  font-weight:800;
  letter-spacing:.18em;
  color:var(--paper);
}
.footer-col-title::before{
  content:"";
  display:inline-block;
  width:8px;
  height:8px;
  margin-right:8px;
  background:var(--sand);
  vertical-align:1px;
}
.footer-links{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:11px;
}
.footer-links a{
  position:relative;
  display:inline-block;
  padding-left:0;
  color:var(--muted);
  font-size:14px;
  text-decoration:none;
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.footer-links a::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:0;
  height:2px;
  background:var(--signal);
  transition:width .18s var(--ease);
}
.footer-links a:hover{color:var(--signal);padding-left:14px;}
.footer-links a:hover::before{width:8px;}

.footer-contact{grid-column:1 / -1;}
.contact-list{
  margin:0 0 16px;
  display:grid;
  gap:12px;
  font-size:14px;
}
.contact-list > div{
  display:grid;
  grid-template-columns:48px 1fr;
  gap:10px;
  align-items:baseline;
}
.contact-list dt{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  color:var(--muted);
}
.contact-list dd{
  margin:0;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.01em;
  color:var(--paper);
  overflow-wrap:anywhere;
}
.contact-note{
  max-width:38ch;
  margin:0;
  font-size:12px;
  line-height:1.75;
  color:var(--muted);
  opacity:.86;
}

.footer-bottom{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  padding:20px 0 26px;
  border-top:2px solid var(--line);
  font-size:12px;
  color:var(--muted);
}
.footer-bottom p{
  margin:0;
  font-family:var(--font-mono);
  letter-spacing:.05em;
}
.legal-links{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
  margin:0 0 0 auto;
  padding:0;
}
.legal-links a{
  color:var(--muted);
  font-size:12px;
  letter-spacing:.03em;
}
.legal-links a:hover{color:var(--signal);}

.footer-watermark{
  position:absolute;
  right:-.04em;
  bottom:-.16em;
  z-index:0;
  font-family:var(--font-mono);
  font-size:clamp(7rem,24vw,20rem);
  font-weight:700;
  line-height:.78;
  letter-spacing:-.05em;
  color:rgba(53,242,176,.055);
  pointer-events:none;
  user-select:none;
}

/* ---------- 滚动显现 ---------- */
.has-reveal [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.has-reveal [data-reveal].is-in{
  opacity:1;
  transform:none;
}

/* ---------- 响应式 ---------- */
@media (max-width:374px){
  .header-brand-slice{display:none;}
  .header-cta{padding:.62em .7em;font-size:.72rem;}
}

@media (min-width:600px){
  .header-brand-tag{display:block;}
}

@media (min-width:760px){
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-contact{grid-column:auto;}
}

@media (min-width:900px){
  .header-meta{display:flex;align-items:center;margin-left:auto;}
  .header-actions{margin-left:0;}
  .header-cta{padding:.85em 1.25em;font-size:.875rem;}
}

@media (min-width:1024px){
  body{padding-left:var(--rail-w);}

  .site-header{left:var(--rail-w);}
  .header-progress{bottom:-2px;}

  .nav-toggle{display:none;}
  .nav-scrim{display:none !important;}

  .rail{
    width:var(--rail-w);
    padding:0;
    transform:none;
    visibility:visible;
    background:var(--ink);
    border-right:2px solid var(--line);
    box-shadow:none;
    overflow:visible;
  }
  .rail[data-open="true"]{box-shadow:none;}

  .rail-brand{
    flex-direction:column;
    justify-content:center;
    align-items:center;
    gap:0;
    height:var(--bar-h);
    padding:0;
    margin:0;
    border-bottom:2px solid var(--line);
  }
  .rail-brand-mark{
    padding:0;
    border:0;
    background:transparent;
    font-size:15px;
    letter-spacing:.1em;
    line-height:1;
  }
  .rail-brand-mark::after{
    content:"";
    display:block;
    width:16px;
    height:2px;
    margin:5px auto 0;
    background:var(--signal);
  }
  .rail-brand-text,.rail-label,.rail-foot{display:none;}

  .rail-list{
    padding:6px 0;
    gap:0;
    overflow-y:auto;
  }
  .rail-link{
    flex-direction:column;
    justify-content:center;
    gap:8px;
    padding:14px 2px;
    border-left:0;
    border-top:2px solid transparent;
  }
  .rail-link:hover{background:rgba(53,242,176,.07);}
  .rail-link .rail-text{
    writing-mode:vertical-rl;
    text-orientation:upright;
    font-size:12px;
    letter-spacing:.14em;
    line-height:1.1;
  }
  .rail-link .rail-num{font-size:11px;letter-spacing:.06em;}
  .rail-link[aria-current="page"]{
    border-left:0;
    border-top-color:var(--signal);
    background:rgba(53,242,176,.1);
  }
}

@media (min-width:1100px){
  .footer-grid{grid-template-columns:1.5fr 1.2fr 1fr;}
}

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