*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,p,figure,blockquote,ul,ol,dl{margin:0}
ul,ol{list-style:none;padding:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
img,svg{display:block;max-width:100%}
:focus-visible{outline:2px solid var(--c-ice);outline-offset:3px}

:root{
  --c-deep:#0A1A2F;
  --c-mid:#112B4A;
  --c-black:#050B14;
  --c-signal:#39FF88;
  --c-flare:#FF8A3D;
  --c-white:#F5F9FF;
  --c-mist:#B8C4D9;
  --c-steel:#3D5A80;
  --c-ice:#7FD1FF;
  --c-pitch:#1E5A3A;

  --line:rgba(61,90,128,.55);
  --line-soft:rgba(61,90,128,.28);
  --signal-soft:rgba(57,255,136,.14);
  --flare-soft:rgba(255,138,61,.16);

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,"Times New Roman",serif;
  --font-body:"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-data:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono","Courier New",monospace;

  --rail-w:17.5rem;
  --bar-h:4.25rem;
  --gut:clamp(1.25rem,4vw,3.25rem);
  --wrap:68rem;
  --wrap-wide:82rem;
  --cut:16px;
  --ease:cubic-bezier(.22,.68,.32,1);
}

html{scroll-behavior:smooth}
body{
  min-height:100vh;
  padding-top:var(--bar-h);
  background:
    radial-gradient(120% 80% at 78% -12%, rgba(30,90,58,.30), transparent 62%),
    radial-gradient(90% 65% at 6% 6%, rgba(17,43,74,.92), transparent 58%),
    var(--c-deep);
  background-attachment:fixed;
  color:var(--c-white);
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--c-signal);color:#06210F}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;top:.6rem;left:.6rem;z-index:140;
  transform:translateY(-220%);
  padding:.7rem 1.05rem;
  background:var(--c-signal);color:#06210F;
  font-family:var(--font-data);font-size:.75rem;font-weight:700;letter-spacing:.1em;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
  transition:transform .25s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- site rail (header) ---------- */
.site-rail{
  position:fixed;top:0;left:0;right:0;z-index:90;
  display:flex;flex-direction:column;
  background:linear-gradient(180deg,rgba(5,11,20,.95),rgba(10,26,47,.92));
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
  transition:background-color .45s var(--ease),border-color .45s var(--ease),box-shadow .45s var(--ease);
}
.rail__inner{
  display:flex;flex-direction:column;
  width:100%;padding:.75rem var(--gut);
}
.rail__top{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:2.75rem}
.rail__brand{display:flex;align-items:center;gap:.7rem;min-width:0}
.rail__mark{
  display:grid;place-items:center;flex:0 0 auto;
  width:2.5rem;height:2.5rem;
  font-family:var(--font-display);font-size:1.125rem;font-weight:700;color:#06210F;
  background:linear-gradient(155deg,var(--c-signal),#22C46F 62%,var(--c-ice));
  clip-path:polygon(0 0,70% 0,100% 30%,100% 100%,30% 100%,0 70%);
}
.rail__brand-text{display:flex;flex-direction:column;gap:.15rem;min-width:0}
.rail__name{font-family:var(--font-display);font-size:1.0625rem;font-weight:700;letter-spacing:.02em;color:var(--c-white);white-space:nowrap}
.rail__tagline{display:flex;align-items:center;gap:.4rem;font-family:var(--font-data);font-size:.625rem;letter-spacing:.05em;color:var(--c-mist);white-space:nowrap}
.rail__pulse{
  width:.4rem;height:.4rem;border-radius:50%;background:var(--c-signal);flex:0 0 auto;
  animation:railPulse 2.6s var(--ease) infinite;
}
@keyframes railPulse{
  0%{box-shadow:0 0 0 0 rgba(57,255,136,.55)}
  70%{box-shadow:0 0 0 .5rem rgba(57,255,136,0)}
  100%{box-shadow:0 0 0 0 rgba(57,255,136,0)}
}
.rail__toggle{
  display:inline-flex;align-items:center;gap:.55rem;
  padding:.5rem .7rem;
  border:1px solid var(--line);
  font-family:var(--font-data);font-size:.6875rem;letter-spacing:.16em;color:var(--c-mist);
  clip-path:polygon(0 0,calc(100% - 9px) 0,100% 9px,100% 100%,9px 100%,0 calc(100% - 9px));
  transition:color .25s,border-color .25s,background-color .25s;
}
.rail__toggle:hover{color:var(--c-signal);border-color:rgba(57,255,136,.5);background:rgba(57,255,136,.06)}
.rail__toggle[aria-expanded="true"]{color:var(--c-signal);border-color:rgba(57,255,136,.55)}
.rail__toggle-bars{display:inline-flex;flex-direction:column;justify-content:center;gap:3px;width:14px;height:12px}
.rail__toggle-bars span{display:block;height:1.5px;background:currentColor;transition:transform .3s var(--ease),opacity .3s var(--ease)}
.rail__toggle[aria-expanded="true"] .rail__toggle-bars span:nth-child(1){transform:translateY(4.5px) rotate(45deg)}
.rail__toggle[aria-expanded="true"] .rail__toggle-bars span:nth-child(2){opacity:0}
.rail__toggle[aria-expanded="true"] .rail__toggle-bars span:nth-child(3){transform:translateY(-4.5px) rotate(-45deg)}

.rail__nav{
  max-height:0;overflow:hidden;opacity:0;margin-top:0;
  transition:max-height .45s var(--ease),opacity .3s var(--ease),margin-top .3s var(--ease);
}
.rail__nav-title{
  font-family:var(--font-data);font-size:.625rem;font-weight:700;letter-spacing:.24em;
  color:var(--c-steel);margin-bottom:.6rem;
}
.rail__list{display:flex;flex-direction:column;gap:.12rem}
.rail__item{display:block}
.rail__link{
  position:relative;display:flex;align-items:center;gap:.7rem;
  padding:.6rem .75rem .6rem .85rem;
  border-left:2px solid transparent;
  color:var(--c-mist);font-size:.9375rem;
  transition:color .25s var(--ease),background-color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);
}
.rail__link-index{font-family:var(--font-data);font-size:.625rem;letter-spacing:.08em;color:var(--c-steel);transition:color .25s var(--ease)}
.rail__link-label{flex:1 1 auto;min-width:0}
.rail__link:hover{color:var(--c-white);background:rgba(17,43,74,.62);border-left-color:var(--c-ice);transform:translateX(3px)}
.rail__link:hover .rail__link-index{color:var(--c-ice)}
.rail__link[aria-current="page"]{
  color:var(--c-signal);
  background:linear-gradient(90deg,var(--signal-soft),rgba(57,255,136,0));
  border-left-color:var(--c-signal);
}
.rail__link[aria-current="page"] .rail__link-index{color:var(--c-signal)}

.rail__foot{
  display:flex;flex-direction:column;gap:.8rem;
  max-height:0;overflow:hidden;opacity:0;
  transition:max-height .45s var(--ease),opacity .3s var(--ease),margin-top .3s var(--ease);
}
.rail__cta{width:100%}
.rail__meta{
  display:flex;align-items:baseline;justify-content:space-between;gap:.5rem;
  padding-top:.6rem;border-top:1px dashed var(--line-soft);
  font-family:var(--font-data);font-size:.625rem;letter-spacing:.12em;
}
.rail__meta-key{color:var(--c-steel)}
.rail__meta-val{color:var(--c-ice)}

.site-rail[data-open="true"] .rail__nav{max-height:min(70vh,30rem);overflow-y:auto;opacity:1;margin-top:.9rem}
.site-rail[data-open="true"] .rail__foot{max-height:14rem;opacity:1;margin-top:1rem}

@media (max-width:1023px){
  html.is-nav-open,html.is-nav-open body{overflow:hidden}
}

/* ---------- desktop rail ---------- */
@media (min-width:1024px){
  body{padding-top:0;padding-left:var(--rail-w)}
  .site-rail{
    top:0;right:auto;bottom:0;left:0;width:var(--rail-w);height:auto;
    background-color:transparent;
    border-bottom:0;border-right:1px solid transparent;
    backdrop-filter:blur(0);
  }
  .site-rail[data-scrolled="true"]{
    background-color:rgba(5,11,20,.92);
    border-right-color:var(--line);
    backdrop-filter:blur(14px);
    box-shadow:26px 0 60px -48px rgba(0,0,0,.9);
  }
  .rail__inner{
    height:100%;padding:2.25rem 1.5rem 1.75rem;gap:2.25rem;
    overflow-y:auto;overflow-x:hidden;
  }
  .rail__top{min-height:0;align-items:flex-start}
  .rail__toggle{display:none}
  .rail__nav,.site-rail[data-open="true"] .rail__nav{
    flex:1 1 auto;max-height:none;overflow:visible;opacity:1;margin-top:0;
  }
  .rail__foot,.site-rail[data-open="true"] .rail__foot{
    max-height:none;overflow:visible;opacity:1;margin-top:0;
  }
  .rail__tagline{white-space:normal}
}

/* ---------- footer ---------- */
.site-foot{
  position:relative;
  margin-top:clamp(4rem,10vw,8rem);
  overflow:hidden;
  color:var(--c-mist);
  background:
    radial-gradient(110% 80% at 8% 0%, rgba(30,90,58,.38), transparent 58%),
    radial-gradient(95% 70% at 94% 8%, rgba(17,43,74,.8), transparent 60%),
    linear-gradient(180deg,#050B14,#071322 62%,#050B14);
  border-top:1px solid var(--line);
}
.site-foot::before{
  content:"";position:absolute;top:-1px;left:0;
  width:clamp(9rem,24%,22rem);height:3px;
  background:linear-gradient(90deg,var(--c-signal),rgba(57,255,136,0));
}
.site-foot::after{
  content:"";position:absolute;top:0;right:0;
  width:clamp(6rem,18%,16rem);height:2px;
  background:linear-gradient(270deg,var(--flare),rgba(255,138,61,0));
}
.foot__glow{
  position:absolute;right:-12%;bottom:-58%;width:34rem;height:34rem;
  background:radial-gradient(circle,rgba(57,255,136,.10),rgba(57,255,136,0) 62%);
  pointer-events:none;
}
.foot__wrap{position:relative;padding-block:clamp(2.75rem,6vw,4.5rem) 1.5rem}
.foot__grid{display:grid;gap:clamp(1.75rem,4vw,2.75rem);grid-template-columns:minmax(0,1fr)}
.foot__brand{min-width:0}
.foot__mark{font-family:var(--font-display);font-size:1.25rem;font-weight:700;letter-spacing:.02em;color:var(--c-white)}
.foot__desc{margin-top:.4rem;font-size:.875rem;color:var(--c-mist)}
.foot__stat{margin-top:1rem;display:flex;align-items:baseline;gap:.5rem;flex-wrap:wrap}
.foot__stat-num{font-family:var(--font-data);font-size:1.5rem;font-weight:800;line-height:1;color:var(--c-signal)}
.foot__stat-label{font-family:var(--font-data);font-size:.6875rem;letter-spacing:.1em;color:var(--c-steel)}
.foot__col{min-width:0}
.foot__title{
  font-family:var(--font-data);font-size:.6875rem;font-weight:700;letter-spacing:.22em;
  color:var(--c-ice);margin-bottom:.9rem;
}
.foot__list{display:flex;flex-direction:column;gap:.55rem}
.foot__item{min-width:0}
.foot__link{
  position:relative;display:inline-block;
  font-size:.875rem;color:var(--c-mist);
  transition:color .25s var(--ease),transform .25s var(--ease);
}
.foot__link::after{
  content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1px;
  background:var(--c-signal);transform:scaleX(0);transform-origin:0 50%;
  transition:transform .3s var(--ease);
}
.foot__link:hover{color:var(--c-white);transform:translateX(2px)}
.foot__link:hover::after{transform:scaleX(1)}
.foot__link[aria-current="page"]{color:var(--c-signal)}
.foot__field{display:flex;flex-direction:column;gap:.15rem}
.foot__label{font-family:var(--font-data);font-size:.625rem;letter-spacing:.16em;color:var(--c-steel)}
.foot__value{font-size:.8125rem;line-height:1.6;color:var(--c-white);word-break:break-word}
.foot__note{margin-top:.85rem;font-size:.75rem;line-height:1.7;color:var(--c-steel)}
.foot__base{
  display:flex;flex-wrap:wrap;align-items:center;gap:.6rem 1.25rem;
  margin-top:clamp(2rem,4vw,3rem);padding-top:1.25rem;
  border-top:1px solid var(--line-soft);
  font-family:var(--font-data);font-size:.6875rem;letter-spacing:.08em;color:var(--c-steel);
}
.foot__copy{margin:0}
.foot__icp{color:var(--c-mist);transition:color .25s var(--ease)}
.foot__icp:hover{color:var(--c-signal)}
.foot__domain{margin-left:auto;color:var(--c-steel)}

@media (min-width:640px){
  .foot__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot__brand{grid-column:1 / -1}
}
@media (min-width:1024px){
  .foot__grid{grid-template-columns:repeat(4,minmax(0,1fr))}
  .foot__brand{grid-column:1 / -1}
  .foot__contact{grid-column:1 / -1}
}
@media (min-width:1280px){
  .foot__grid{grid-template-columns:1.5fr .85fr .85fr .85fr 1.45fr}
  .foot__brand{grid-column:auto}
  .foot__contact{grid-column:auto}
}

/* ---------- containers ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut)}
.wrap--wide{max-width:var(--wrap-wide)}
.wrap--narrow{max-width:46rem}
.section{padding-block:clamp(3rem,7vw,6.5rem)}
.section--tight{padding-block:clamp(1.75rem,4vw,3rem)}
.divider{height:1px;border:0;margin-block:clamp(2rem,5vw,3.5rem);background:linear-gradient(90deg,rgba(61,90,128,0),var(--line),rgba(61,90,128,0))}
.trail{height:1px;background:linear-gradient(90deg,var(--c-signal),rgba(57,255,136,0))}

/* ---------- grid ---------- */
.grid{display:grid;gap:clamp(1rem,2.5vw,1.75rem)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(min(100%,18rem),1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(min(100%,15rem),1fr))}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.grid--12 > *{grid-column:span 12}
@media (min-width:768px){
  .grid--12 > .col-md-4{grid-column:span 4}
  .grid--12 > .col-md-5{grid-column:span 5}
  .grid--12 > .col-md-6{grid-column:span 6}
  .grid--12 > .col-md-7{grid-column:span 7}
  .grid--12 > .col-md-8{grid-column:span 8}
  .grid--12 > .col-md-9{grid-column:span 9}
  .grid--12 > .col-md-12{grid-column:span 12}
}
@media (min-width:1200px){
  .grid--12 > .col-xl-3{grid-column:span 3}
  .grid--12 > .col-xl-4{grid-column:span 4}
  .grid--12 > .col-xl-5{grid-column:span 5}
  .grid--12 > .col-xl-6{grid-column:span 6}
  .grid--12 > .col-xl-7{grid-column:span 7}
  .grid--12 > .col-xl-8{grid-column:span 8}
  .grid--12 > .col-xl-9{grid-column:span 9}
}

/* ---------- typography ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:.55rem;
  font-family:var(--font-data);font-size:.6875rem;font-weight:700;letter-spacing:.24em;
  text-transform:uppercase;color:var(--c-ice);
}
.eyebrow::before{content:"";width:1.75rem;height:1px;background:linear-gradient(90deg,var(--c-signal),rgba(57,255,136,0))}
.section-title{
  font-family:var(--font-display);font-weight:700;letter-spacing:.01em;
  font-size:clamp(1.75rem,3.4vw,2.5rem);line-height:1.15;color:var(--c-white);
}
.lede{max-width:44rem;font-size:clamp(1rem,1.4vw,1.125rem);line-height:1.75;color:var(--c-mist)}
.prose{max-width:44rem;font-size:1rem;line-height:1.8;color:var(--c-mist)}
.prose p + p{margin-top:1.05em}
.prose h2{margin-top:2.2em;margin-bottom:.7em;font-family:var(--font-display);font-weight:700;font-size:clamp(1.375rem,2.4vw,1.75rem);line-height:1.25;color:var(--c-white)}
.prose h3{margin-top:1.6em;margin-bottom:.5em;font-size:1.0625rem;font-weight:700;color:var(--c-white)}
.prose ul,.prose ol{margin-top:1em;display:grid;gap:.5rem}
.prose li{position:relative;padding-left:1.15rem}
.prose li::before{
  content:"";position:absolute;left:0;top:.72em;width:.45rem;height:.45rem;
  background:var(--c-signal);
  clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
}
.prose ol{counter-reset:proseList}
.prose ol li{padding-left:1.9rem}
.prose ol li::before{
  counter-increment:proseList;content:counter(proseList,decimal-leading-zero);
  top:0;width:auto;height:auto;background:none;clip-path:none;
  font-family:var(--font-data);font-size:.75rem;font-weight:700;color:var(--c-signal);
}
.prose a{color:var(--c-ice);text-decoration:underline;text-underline-offset:3px}
.prose strong{color:var(--c-white)}
.prose code{font-family:var(--font-data);font-size:.875em;color:var(--c-signal)}

/* ---------- breadcrumb ---------- */
.breadcrumb{margin-bottom:clamp(1rem,3vw,1.75rem)}
.breadcrumb__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;
  font-family:var(--font-data);font-size:.6875rem;letter-spacing:.08em;color:var(--c-steel);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:.5rem}
.breadcrumb__item[aria-current="page"]{color:var(--c-ice)}
.breadcrumb__link{color:var(--c-mist);transition:color .25s var(--ease)}
.breadcrumb__link:hover{color:var(--c-signal)}
.breadcrumb__sep{color:var(--c-steel)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.75rem 1.1rem;
  font-family:var(--font-data);font-size:.75rem;font-weight:700;letter-spacing:.1em;
  border:1px solid transparent;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
  transition:transform .25s var(--ease),background-color .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--signal{background:var(--c-signal);color:#06210F}
.btn--signal:hover{box-shadow:0 10px 26px -12px rgba(57,255,136,.75)}
.btn--ghost{background:rgba(57,255,136,.08);color:var(--c-signal);border-color:rgba(57,255,136,.42)}
.btn--ghost:hover{background:rgba(57,255,136,.16)}
.btn--line{background:transparent;color:var(--c-mist);border-color:var(--line)}
.btn--line:hover{color:var(--c-white);border-color:var(--c-ice)}
.btn--block{width:100%}

/* ---------- panels ---------- */
.panel{
  position:relative;
  padding:clamp(1.25rem,3vw,2rem);
  border:1px solid var(--line-soft);
  background:linear-gradient(155deg,rgba(17,43,74,.85),rgba(10,26,47,.92) 62%,rgba(5,11,20,.95));
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
}
.panel--flat{clip-path:none}
.panel--signal{border-color:rgba(57,255,136,.35);background:linear-gradient(155deg,rgba(30,90,58,.5),rgba(10,26,47,.92))}
.panel--flare{border-color:rgba(255,138,61,.35);background:linear-gradient(155deg,rgba(255,138,61,.12),rgba(10,26,47,.94))}
.panel__head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;margin-bottom:1rem}
.panel__title{font-family:var(--font-display);font-size:1.125rem;font-weight:700;line-height:1.35;color:var(--c-white)}
.panel__meta{font-family:var(--font-data);font-size:.6875rem;letter-spacing:.12em;color:var(--c-steel);white-space:nowrap}

/* ---------- stats ---------- */
.stat{display:flex;flex-direction:column;gap:.35rem;min-width:0}
.stat__num{
  font-family:var(--font-data);font-weight:800;letter-spacing:-.02em;line-height:1;
  font-size:clamp(2rem,4.5vw,3.25rem);color:var(--c-white);
}
.stat__num--signal{color:var(--c-signal)}
.stat__num--flare{color:var(--c-flare)}
.stat__unit{margin-left:.15rem;font-size:.9rem;font-weight:700;color:var(--c-steel)}
.stat__label{font-family:var(--font-data);font-size:.6875rem;letter-spacing:.14em;color:var(--c-mist)}

/* ---------- tags ---------- */
.tag{
  display:inline-flex;align-items:center;gap:.35rem;
  padding:.25rem .6rem;border:1px solid var(--line-soft);border-radius:999px;
  font-family:var(--font-data);font-size:.625rem;letter-spacing:.12em;color:var(--c-mist);
}
.tag--signal{color:var(--c-signal);border-color:rgba(57,255,136,.4);background:var(--signal-soft)}
.tag--flare{color:var(--c-flare);border-color:rgba(255,138,61,.4);background:var(--flare-soft)}

/* ---------- figure (页面阶段放置图片) ---------- */
.figure{
  position:relative;overflow:hidden;
  border:1px solid var(--line-soft);
  background:linear-gradient(150deg,var(--c-mid),var(--c-black));
}
.figure--cut{
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
}
.figure__media{position:relative;aspect-ratio:16 / 9;overflow:hidden}
.figure--wide .figure__media{aspect-ratio:21 / 9}
.figure--tall .figure__media{aspect-ratio:3 / 4}
.figure--square .figure__media{aspect-ratio:1 / 1}
.figure__media img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.figure:hover .figure__media img{transform:scale(1.03)}
.figure__img{
  width:100%;height:100%;display:block;
  background:
    repeating-linear-gradient(135deg,rgba(61,90,128,.22) 0 12px,rgba(17,43,74,.38) 12px 24px),
    linear-gradient(150deg,rgba(30,90,58,.4),rgba(10,26,47,.9));
}
.figure__media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(5,11,20,0) 45%,rgba(5,11,20,.78));
}
.figure--plain .figure__media::after{display:none}
.figure__badge{position:absolute;z-index:2;top:.85rem;left:.85rem}
.figure__caption{
  padding:.85rem 1rem;border-top:1px solid var(--line-soft);
  font-family:var(--font-data);font-size:.6875rem;letter-spacing:.06em;line-height:1.6;color:var(--c-mist);
}

/* ---------- toc state ---------- */
[data-toc]{transition:color .25s var(--ease),border-color .25s var(--ease)}
[data-toc][aria-current="true"]{color:var(--c-signal)}

/* ---------- injected: progress + to top ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;z-index:130;width:100%;height:2px;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--c-signal),var(--c-ice) 55%,var(--c-flare));
  pointer-events:none;
}
@media (min-width:1024px){
  .scroll-progress{left:var(--rail-w);width:calc(100% - var(--rail-w))}
}
.to-top{
  position:fixed;right:clamp(1rem,3vw,2rem);bottom:clamp(1rem,3vw,2rem);z-index:100;
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.65rem .9rem;
  background:rgba(5,11,20,.9);
  border:1px solid var(--line);
  color:var(--c-signal);
  font-family:var(--font-data);font-size:.6875rem;font-weight:700;letter-spacing:.12em;
  clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px));
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease),border-color .3s var(--ease),background-color .3s var(--ease);
}
.to-top[data-visible="true"]{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:rgba(57,255,136,.6);background:rgba(17,43,74,.96)}
.to-top__label{color:var(--c-mist)}

/* ---------- reveal ---------- */
.has-motion [data-reveal]{
  opacity:0;transform:translateY(18px);
  transition:opacity .7s var(--ease),transform .75s var(--ease);
  transition-delay:var(--reveal-delay,0ms);
}
.has-motion [data-reveal].is-in{opacity:1;transform:none}

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