:root{
  --ink:#0B0F0D;
  --ink-soft:#0F2A22;
  --pitch:#174A3A;
  --lime:#C6FF4A;
  --lime-dim:rgba(198,255,74,.55);
  --amber:#FFB347;
  --blue:#3D7BFF;
  --violet:#9B7BFF;
  --paper:#F4F1E8;
  --mist:#AAB7B0;
  --alert:#FF5A5F;
  --line:rgba(244,241,232,.14);
  --line-strong:rgba(244,241,232,.3);
  --maxw:1440px;
  --gutter:clamp(16px,4vw,48px);
  --gap:clamp(16px,2.4vw,24px);
  --radius:2px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-display:'Barlow Condensed','DIN Condensed','Noto Sans SC',sans-serif;
  --font-body:'Noto Sans SC','Source Han Sans SC','PingFang SC',sans-serif;
  --font-serif:'Noto Serif SC','Songti SC',serif;
  --font-mono:'IBM Plex Mono','Roboto Mono','SFMono-Regular',monospace;
}

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

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}

body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.78;
  letter-spacing:.01em;
  overflow-x:hidden;
}

h1,h2,h3,h4,h5,h6{
  margin:0 0 .5em;
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.12;
  letter-spacing:.01em;
}

h1{font-size:clamp(36px,5.4vw,68px);}
h2{font-size:clamp(26px,3.2vw,38px);}
h3{font-size:clamp(20px,2.2vw,26px);}

p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.2em;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--lime);text-decoration-thickness:1px;text-underline-offset:3px;}
button{font:inherit;}
hr{border:0;}

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

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

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;
  left:16px;
  top:-80px;
  z-index:120;
  display:inline-block;
  padding:10px 18px;
  background:var(--lime);
  color:var(--ink);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  text-decoration:none;
  border-radius:var(--radius);
  transition:top .16s var(--ease);
}
.skip-link:focus{top:10px;}

/* ---------- 头部命令栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#0A0E0C;
  color:var(--paper);
  border-bottom:1px solid rgba(198,255,74,.16);
  transition:box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.site-header[data-stuck]{
  background:#0B100E;
  box-shadow:0 12px 28px -20px rgba(0,0,0,.95);
}
.header-shell{
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.header-bar{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,28px);
  min-height:68px;
  padding-block:10px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
  color:var(--paper);
  flex:0 0 auto;
}
.brand-mark{
  display:grid;
  place-items:center;
  width:38px;
  height:38px;
  background:var(--lime);
  color:var(--ink);
  font-family:var(--font-display);
  font-size:20px;
  font-weight:700;
  line-height:1;
  clip-path:polygon(0 0,100% 0,100% 70%,72% 100%,0 100%);
}
.brand-text{
  display:grid;
  gap:2px;
  padding-left:12px;
  border-left:1px solid rgba(198,255,74,.32);
}
.brand-name{
  font-family:var(--font-display);
  font-size:21px;
  font-weight:700;
  letter-spacing:.06em;
  line-height:1.05;
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.24em;
  color:var(--mist);
  text-transform:uppercase;
}
.nav-note{
  margin:0 0 0 auto;
  padding-left:16px;
  border-left:1px dashed rgba(244,241,232,.2);
  font-family:var(--font-serif);
  font-size:13px;
  font-style:italic;
  letter-spacing:.04em;
  color:var(--mist);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}
.nav-note + .header-actions{margin-left:24px;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:11px 18px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-body);
  font-size:14px;
  font-weight:700;
  line-height:1.2;
  letter-spacing:.06em;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.btn-primary{
  background:var(--lime);
  color:var(--ink);
  border-color:var(--lime);
}
.btn-primary:hover{
  background:#DCFF8A;
  border-color:#DCFF8A;
  box-shadow:3px 3px 0 0 rgba(255,179,71,.9);
}
.btn-ghost{
  background:transparent;
  color:var(--paper);
  border-color:var(--line-strong);
}
.btn-ghost:hover{color:var(--lime);border-color:var(--lime);}
.btn-sm{padding:9px 14px;font-size:12.5px;letter-spacing:.1em;}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:9px 12px;
  background:transparent;
  color:var(--paper);
  border:1px solid rgba(198,255,74,.45);
  border-radius:var(--radius);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.14em;
  cursor:pointer;
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime);}
.nav-toggle-bars{display:grid;gap:4px;}
.nav-toggle-bars span{
  display:block;
  width:16px;
  height:2px;
  background:var(--lime);
  transition:transform .18s var(--ease),opacity .18s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:first-child{transform:translateY(3px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:last-child{transform:translateY(-3px) rotate(-45deg);}
.nav-toggle-label{line-height:1;}

.site-nav{
  display:flex;
  align-items:center;
  gap:16px;
  border-top:1px dashed rgba(244,241,232,.16);
  padding-bottom:2px;
}
.nav-list{
  display:flex;
  flex-wrap:wrap;
  align-items:stretch;
  gap:0;
  margin:0;
  padding:0;
  list-style:none;
  counter-reset:navidx;
}
.nav-item{
  counter-increment:navidx;
  display:flex;
}
.nav-link{
  display:flex;
  align-items:baseline;
  gap:7px;
  padding:12px 16px;
  color:rgba(244,241,232,.78);
  font-size:14px;
  font-weight:500;
  letter-spacing:.06em;
  text-decoration:none;
  box-shadow:inset 0 -2px 0 0 transparent;
  transition:color .16s var(--ease),background-color .16s var(--ease),box-shadow .16s var(--ease);
}
.nav-link::before{
  content:counter(navidx,decimal-leading-zero);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.06em;
  color:var(--lime-dim);
}
.nav-link:hover{
  color:var(--paper);
  background:rgba(23,74,58,.7);
  box-shadow:inset 0 -2px 0 0 rgba(198,255,74,.6);
}
.nav-link:hover::before{color:var(--lime);}
.nav-link[aria-current="page"]{
  color:var(--lime);
  background:rgba(198,255,74,.09);
  box-shadow:inset 0 -2px 0 0 var(--lime);
}
.nav-link[aria-current="page"]::before{color:var(--lime);}
.nav-status{
  margin:0 0 0 auto;
  display:flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--mist);
  white-space:nowrap;
}
.nav-status::before{
  content:"";
  width:6px;
  height:6px;
  background:var(--amber);
  box-shadow:0 0 0 3px rgba(255,179,71,.16);
}

.scroll-meter{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:rgba(198,255,74,.1);
  pointer-events:none;
}
.scroll-meter-fill{
  display:block;
  width:0;
  height:100%;
  background:var(--lime);
  transition:width .08s linear;
}
.scroll-meter[data-active] .scroll-meter-fill{
  background:linear-gradient(90deg,var(--lime) 0%,var(--lime) 82%,var(--amber) 100%);
}

/* ---------- 页脚版权页 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,104px);
  background:var(--ink-soft);
  color:var(--paper);
  border-top:3px solid var(--lime);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(198,255,74,.055) 0 1px,transparent 1px 104px);
}
.footer-shell{
  position:relative;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:clamp(36px,5.5vw,72px) var(--gutter) 26px;
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:clamp(28px,4vw,56px);
  align-items:start;
}
.footer-brand{max-width:34ch;}
.footer-eyebrow{
  margin:0 0 14px;
  font-family:var(--font-display);
  font-size:clamp(22px,2.6vw,34px);
  font-weight:700;
  line-height:1.08;
  letter-spacing:.02em;
  color:var(--paper);
}
.footer-summary{
  margin:0;
  font-size:14.5px;
  line-height:1.75;
  color:rgba(244,241,232,.72);
}
.footer-cta{
  display:inline-flex;
  align-items:center;
  gap:.5em;
  margin-top:22px;
  padding:12px 20px;
  background:var(--lime);
  color:var(--ink);
  font-size:13.5px;
  font-weight:700;
  letter-spacing:.08em;
  text-decoration:none;
  border-radius:var(--radius);
  transition:box-shadow .16s var(--ease),background-color .16s var(--ease);
}
.footer-cta::after{content:"→";font-family:var(--font-mono);}
.footer-cta:hover{
  background:#DCFF8A;
  box-shadow:4px 4px 0 0 rgba(255,179,71,.9);
}
.footer-nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(18px,2.4vw,32px);
}
.footer-col{min-width:0;}
.footer-col-title{
  margin:0 0 14px;
  padding-bottom:9px;
  border-bottom:1px dashed rgba(255,179,71,.38);
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:600;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--amber);
}
.footer-list{
  display:grid;
  gap:9px;
  margin:0;
  padding:0;
  list-style:none;
}
.footer-link{
  display:inline-block;
  color:rgba(244,241,232,.82);
  font-size:14px;
  letter-spacing:.03em;
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-link:hover{color:var(--lime);border-bottom-color:var(--lime);}

.footer-contact{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
  gap:12px 28px;
  margin-top:clamp(28px,4vw,44px);
  padding-top:22px;
  border-top:1px solid rgba(244,241,232,.16);
}
.contact-line{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:8px;
  margin:0;
  font-size:13px;
  line-height:1.7;
}
.contact-label{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mist);
}
.contact-value{
  font-family:var(--font-mono);
  font-size:13.5px;
  letter-spacing:.02em;
  color:var(--paper);
  word-break:break-word;
}
.contact-line--note{grid-column:1/-1;}
.contact-line--note .contact-value{
  font-family:var(--font-body);
  font-size:12.5px;
  color:var(--mist);
}
.copy-btn{
  padding:3px 9px;
  background:transparent;
  color:var(--lime);
  border:1px solid rgba(198,255,74,.42);
  border-radius:var(--radius);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.12em;
  cursor:pointer;
  transition:background-color .16s var(--ease),color .16s var(--ease);
}
.copy-btn:hover{background:rgba(198,255,74,.16);color:var(--lime);}
.copy-status{
  margin:12px 0 0;
  min-height:1.2em;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--amber);
}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  margin-top:24px;
  padding-top:16px;
  border-top:1px dashed rgba(244,241,232,.18);
}
.footer-legal-text,
.footer-meta{
  margin:0;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--mist);
}
.footer-legal-text{color:rgba(198,255,74,.75);}

/* ---------- 页面通用结构 ---------- */
.wrap{
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.grid{
  display:grid;
  gap:var(--gap);
  align-items:start;
}
.grid--5-7{grid-template-columns:minmax(0,5fr) minmax(0,7fr);}
.grid--4-8{grid-template-columns:minmax(0,4fr) minmax(0,8fr);}

.kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin:0 0 12px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--lime);
}
.kicker::before{
  content:"";
  width:18px;
  height:2px;
  background:var(--lime);
}
.lede{
  max-width:62ch;
  font-family:var(--font-serif);
  font-size:clamp(16.5px,1.5vw,19.5px);
  line-height:1.85;
  color:rgba(244,241,232,.82);
}
.mono{
  font-family:var(--font-mono);
  font-size:.92em;
  letter-spacing:.04em;
}
.stat-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-weight:700;
  letter-spacing:0;
  color:var(--lime);
}

.breadcrumb{margin:0;}
.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0 0 20px;
  padding:0;
  list-style:none;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--mist);
}
.breadcrumb-item{display:flex;align-items:center;gap:8px;}
.breadcrumb-item:not(:last-child)::after{
  content:"/";
  color:rgba(198,255,74,.5);
}
.breadcrumb-link{
  color:rgba(244,241,232,.72);
  text-decoration:none;
}
.breadcrumb-link:hover{color:var(--lime);}

.panel{
  padding:clamp(18px,2.4vw,26px);
  background:rgba(23,74,58,.34);
  border:1px solid rgba(198,255,74,.18);
  border-radius:var(--radius);
}
.paper-card{
  position:relative;
  padding:clamp(18px,2.4vw,26px);
  background:var(--paper);
  color:#151A17;
  border:1px solid #D9D3C2;
  border-radius:var(--radius);
  box-shadow:6px 6px 0 0 rgba(198,255,74,.22);
}
.paper-card a{color:#0F4A3A;}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  border:1px solid currentColor;
  border-radius:var(--radius);
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:600;
  letter-spacing:.12em;
  text-transform:uppercase;
  line-height:1.6;
}
.tag-lime{color:var(--lime);}
.tag-amber{color:var(--amber);}
.tag-violet{color:var(--violet);}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:12px 24px;
  margin-bottom:clamp(16px,2vw,24px);
  padding-bottom:12px;
  border-bottom:1px dashed rgba(244,241,232,.2);
}
.section-title{
  margin:0;
  font-family:var(--font-display);
  font-size:clamp(22px,2.6vw,32px);
  font-weight:700;
  letter-spacing:.02em;
}
.note-strip{
  margin:0 0 1.2em;
  padding:14px 16px;
  background:rgba(255,179,71,.08);
  border-left:3px solid var(--amber);
  font-size:14px;
  line-height:1.75;
  color:rgba(244,241,232,.88);
}
.divider-line{
  height:0;
  margin:clamp(24px,3.4vw,40px) 0;
  border-top:1px dashed rgba(244,241,232,.2);
}

.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16 / 10;
  background:var(--ink-soft);
  border:1px solid rgba(198,255,74,.22);
  border-radius:var(--radius);
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media-frame--wide{aspect-ratio:21 / 9;}
.media-frame--tall{aspect-ratio:4 / 5;}

.is-reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .4s var(--ease),transform .4s var(--ease);
}
.is-reveal.is-visible{
  opacity:1;
  transform:none;
}

@keyframes navFade{
  from{opacity:0;transform:translateY(-4px);}
  to{opacity:1;transform:none;}
}

/* ---------- 平板 ---------- */
@media (max-width:1100px){
  .nav-note{display:none;}
  .nav-note + .header-actions{margin-left:auto;}
  .footer-top{grid-template-columns:minmax(0,1fr);}
  .footer-brand{max-width:none;}
  .grid--5-7,
  .grid--4-8{grid-template-columns:minmax(0,1fr);}
}

/* ---------- 手机 / 折叠导航 ---------- */
@media (max-width:900px){
  body{font-size:16px;}
  .header-bar{min-height:60px;gap:10px;}
  .nav-toggle{display:inline-flex;}
  .site-nav{
    display:none;
    padding-bottom:12px;
  }
  .site-nav[data-open]{
    display:block;
    animation:navFade .18s var(--ease) both;
  }
  .nav-list{
    flex-direction:column;
    gap:0;
  }
  .nav-item{
    border-bottom:1px dashed rgba(244,241,232,.14);
  }
  .nav-item:first-child{border-top:1px dashed rgba(244,241,232,.14);}
  .nav-link{
    width:100%;
    padding:14px 4px;
    font-size:15px;
    box-shadow:none;
  }
  .nav-link:hover,
  .nav-link[aria-current="page"]{box-shadow:none;background:rgba(198,255,74,.08);}
  .nav-status{
    margin:14px 0 0;
    padding-top:12px;
    border-top:1px dashed rgba(244,241,232,.18);
    white-space:normal;
  }
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-legal{flex-direction:column;align-items:flex-start;}
}

@media (max-width:560px){
  .brand-mark{width:34px;height:34px;font-size:18px;}
  .brand-name{font-size:17px;}
  .brand-sub{font-size:9.5px;letter-spacing:.18em;}
  .brand-text{padding-left:10px;}
  .header-actions .btn-sm{padding:8px 10px;font-size:11.5px;letter-spacing:.04em;}
  .nav-toggle-label{display:none;}
  .nav-toggle{padding:9px 10px;}
  .footer-nav{grid-template-columns:minmax(0,1fr);}
  .footer-cta{width:100%;justify-content:center;}
  .footer-contact{grid-template-columns:minmax(0,1fr);}
  .footer-eyebrow{font-size:clamp(20px,6vw,26px);}
}

/* ---------- 减少动态 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .is-reveal{opacity:1;transform:none;}
}

/* ---------- 打印 ---------- */
@media print{
  .site-header,
  .site-footer,
  .nav-toggle,
  .scroll-meter{display:none !important;}
  body{background:#fff;color:#111;}
}