*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,p,ul,ol,li,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
img,svg,picture{display:block;max-width:100%}

:root{
  --ink:#0B2B23;
  --ink-deep:#071D18;
  --moss:#1C4438;
  --rock:#2E3A36;
  --lime:#C6F24A;
  --lime-soft:#E6FFA8;
  --orange:#FF7A3C;
  --clay:#D98E62;
  --pool:#123A46;
  --paper:#F2EDE3;
  --mist:#A9B7AE;
  --rail-w:152px;
  --bar-h:72px;
  --radius-card:20px;
  --radius-pill:999px;
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono","Courier New",monospace;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --display:"Barlow Condensed","Oswald","Noto Sans SC","PingFang SC",system-ui,sans-serif;
}

html{scroll-behavior:smooth}

body{
  min-height:100vh;
  padding-left:var(--rail-w);
  padding-top:var(--bar-h);
  background-color:var(--ink);
  background-image:
    repeating-linear-gradient(0deg,rgba(242,237,227,.028) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(90deg,rgba(242,237,227,.028) 0 1px,transparent 1px 48px);
  color:var(--paper);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}

#main-content{scroll-margin-top:calc(var(--bar-h) + 20px)}

:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:6px}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;left:calc(var(--rail-w) + 18px);top:-90px;z-index:120;
  padding:10px 20px;border-radius:var(--radius-pill);
  background:var(--lime);color:#08201A;font-size:14px;font-weight:700;
  transition:top .2s ease;
}
.skip-link:focus{top:14px}

/* ---------- read progress ---------- */
.read-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:110;
  background:rgba(46,58,54,.55);pointer-events:none;
}
.read-progress__bar{
  display:block;height:100%;width:0;
  background:var(--lime);box-shadow:0 0 14px rgba(198,242,74,.55);
}

/* ---------- header frame ---------- */
.site-header{position:fixed;inset:0;z-index:90;pointer-events:none}

.header-rail{
  position:absolute;inset:0 auto 0 0;width:var(--rail-w);
  display:flex;flex-direction:column;gap:18px;
  padding:18px 14px 16px;
  background:var(--ink-deep);
  border-right:1px solid var(--rock);
  pointer-events:auto;
  overflow-y:auto;
  scrollbar-width:thin;
}

.brand{display:flex;flex-direction:column;gap:10px;align-items:flex-start;flex:0 0 auto}
.brand__mark{
  width:42px;height:42px;display:grid;place-items:center;
  background:var(--lime);color:#08201A;
  font-size:21px;font-weight:800;line-height:1;
  border-radius:12px;
  clip-path:polygon(0 0,100% 0,100% 74%,86% 100%,0 100%);
}
.brand__text{display:flex;flex-direction:column;gap:3px}
.brand__name{font-size:15px;font-weight:700;letter-spacing:.02em;line-height:1.35;color:var(--paper)}
.brand__sub{font-family:var(--mono);font-size:10px;letter-spacing:.08em;line-height:1.5;color:var(--mist)}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 14px;border-radius:var(--radius-pill);
  border:1px solid var(--rock);color:var(--paper);
  font-size:13px;font-weight:600;cursor:pointer;
}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:2px;background:var(--lime);border-radius:2px}
.nav-toggle[aria-expanded="true"]{border-color:var(--lime);color:var(--lime)}

.rail-nav{display:flex;flex-direction:column;gap:14px;flex:1 1 auto;min-height:0;overflow-y:auto;scrollbar-width:none}
.rail-nav::-webkit-scrollbar{width:0}
.rail-nav__title{
  font-family:var(--mono);font-size:9px;letter-spacing:.24em;text-transform:uppercase;
  color:var(--mist);padding-left:10px;
}
.rail-nav__list{display:flex;flex-direction:column;gap:3px}
.rail-nav__link{
  display:flex;align-items:baseline;gap:8px;
  padding:9px 10px;border-radius:10px;
  border-left:2px solid transparent;
  font-size:14px;line-height:1.4;color:var(--paper);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.rail-nav__idx{font-family:var(--mono);font-size:10px;letter-spacing:.05em;color:var(--clay);flex:0 0 auto}
.rail-nav__label{display:block}
.rail-nav__link:hover{background:rgba(198,242,74,.09);border-left-color:rgba(198,242,74,.55)}
.rail-nav__link[aria-current="page"]{
  background:rgba(198,242,74,.15);
  border-left-color:var(--lime);
  color:var(--lime-soft);font-weight:600;
}
.rail-nav__link[aria-current="page"] .rail-nav__idx{color:var(--lime)}
.rail-nav__note{
  margin-top:2px;padding:12px 10px 0;
  border-top:1px solid var(--rock);
  font-size:11px;line-height:1.65;color:var(--mist);
}

.rail-foot{
  display:flex;flex-direction:column;gap:2px;flex:0 0 auto;
  padding-top:12px;border-top:1px solid var(--rock);
}
.rail-foot__label{font-family:var(--mono);font-size:9px;letter-spacing:.22em;color:var(--mist)}
.rail-foot__value{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--lime-soft)}

.header-bar{
  position:absolute;top:0;left:var(--rail-w);right:0;height:var(--bar-h);
  display:flex;align-items:center;gap:20px;
  padding:0 24px;
  background:var(--pool);
  border-bottom:1px solid var(--rock);
  pointer-events:auto;
}

.search-strip{display:flex;align-items:center;gap:10px;flex:1 1 auto;min-width:0}
.search-strip__label{
  flex:0 0 auto;
  font-family:var(--mono);font-size:10px;letter-spacing:.2em;
  color:var(--lime);
  border:1px solid rgba(198,242,74,.42);
  border-radius:var(--radius-pill);
  padding:4px 10px;
  white-space:nowrap;
}
.search-strip__field{
  position:relative;display:flex;align-items:center;gap:7px;
  min-width:0;flex:0 1 auto;
  padding:5px 14px;
  background:rgba(11,43,35,.62);
  border:1px solid var(--rock);
  border-radius:var(--radius-pill);
  transition:border-color .2s ease;
}
.search-strip__field:focus-within{border-color:var(--lime)}
.search-strip__field--select::after{
  content:"▾";position:absolute;right:11px;top:50%;transform:translateY(-50%);
  font-size:9px;color:var(--mist);pointer-events:none;
}
.search-strip__caption{
  font-family:var(--mono);font-size:10px;letter-spacing:.14em;
  color:var(--mist);white-space:nowrap;flex:0 0 auto;
}
.search-strip__select,.search-strip__input{
  min-width:0;width:100%;font-size:13px;line-height:1.4;color:var(--paper);
  outline:none;
}
.search-strip__select{appearance:none;-webkit-appearance:none;padding-right:16px;cursor:pointer}
.search-strip__select option{background:var(--ink-deep);color:var(--paper)}
.search-strip__field:has(.search-strip__input),
.search-strip__input{min-width:170px}
.search-strip__input::placeholder{color:rgba(169,183,174,.72)}
.search-strip__go{
  flex:0 0 auto;
  padding:8px 16px;border-radius:var(--radius-pill);
  background:rgba(198,242,74,.14);
  border:1px solid rgba(198,242,74,.5);
  color:var(--lime);font-size:12.5px;font-weight:600;
  white-space:nowrap;
  transition:background-color .2s ease,color .2s ease;
}
.search-strip__go:hover{background:var(--lime);color:#08201A}

.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.header-contact{
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;
  color:var(--mist);white-space:nowrap;
}
.header-contact span{color:var(--lime-soft)}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(52px,8vw,110px);
  background:var(--ink-deep);
  border-top:1px solid var(--rock);
}
.site-footer::before{
  content:"";display:block;height:4px;
  background:linear-gradient(90deg,var(--lime) 0 18%,var(--clay) 18% 30%,var(--rock) 30% 100%);
}
.footer-top{
  display:grid;
  grid-template-columns:1.15fr 2.1fr 1.15fr;
  gap:clamp(24px,4vw,56px);
  padding:clamp(34px,5vw,64px) clamp(18px,4vw,48px);
  max-width:1320px;margin-inline:auto;
}
.footer-brand{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.footer-brand__mark{
  width:40px;height:40px;display:grid;place-items:center;
  border-radius:11px;
  background:var(--lime);color:#08201A;
  font-size:20px;font-weight:800;line-height:1;
  clip-path:polygon(0 0,100% 0,100% 74%,86% 100%,0 100%);
}
.footer-brand__name{font-size:16px;font-weight:700;letter-spacing:.03em}
.footer-brand__sub{font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:var(--mist)}
.footer-brand__note{font-size:13px;line-height:1.7;color:var(--mist);max-width:26ch}

.footer-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2.4vw,32px)}
.footer-col{display:flex;flex-direction:column;gap:12px}
.footer-col__title{
  font-family:var(--mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--clay);font-weight:600;
}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-link{
  font-size:13.5px;color:var(--paper);line-height:1.6;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer-link:hover{color:var(--lime);border-bottom-color:rgba(198,242,74,.6)}

.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact__list{display:flex;flex-direction:column;gap:9px}
.footer-contact__item{
  font-size:12.5px;line-height:1.65;color:var(--mist);
  display:flex;flex-direction:column;gap:2px;
}
.footer-contact__key{font-family:var(--mono);font-size:9px;letter-spacing:.18em;color:var(--clay)}
.footer-contact__cta{align-self:flex-start;margin-top:4px}

.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px;
  padding:18px clamp(18px,4vw,48px);
  max-width:1320px;margin-inline:auto;
  border-top:1px solid var(--rock);
  font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--mist);
}
.footer-copy{margin-right:auto}
.footer-bottom__links{display:flex;flex-wrap:wrap;gap:16px}
.footer-bottom__links .footer-link{font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--mist)}
.footer-bottom__links .footer-link:hover{color:var(--lime)}
.footer-icp{color:var(--mist);white-space:nowrap}

/* ---------- shared page primitives ---------- */
.container{width:100%;max-width:1180px;margin-inline:auto;padding-inline:clamp(18px,3.6vw,44px)}
.section{padding-block:clamp(42px,6vw,88px)}
.section--pool{background:var(--pool)}
.section--moss{background:var(--moss)}
.section__head{display:flex;flex-direction:column;gap:12px;margin-bottom:clamp(22px,3vw,36px);max-width:62ch}
.section__title{font-size:clamp(22px,2.4vw,32px);font-weight:700;letter-spacing:.01em;line-height:1.3}
.section__lead{font-size:15px;line-height:1.8;color:var(--mist);max-width:38em}

.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--lime);
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--lime);flex:0 0 auto}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

.prose{max-width:36em}
.prose p{font-size:16px;line-height:1.85;color:var(--paper)}
.prose p + p{margin-top:1em}
.prose h2{font-size:22px;line-height:1.4;margin-block:1.6em .6em}
.prose h3{font-size:18px;line-height:1.5;margin-block:1.4em .5em}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--radius-pill);
  font-size:14px;font-weight:600;line-height:1.4;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn--lime{background:var(--lime);color:#08201A}
.btn--lime:hover{background:var(--lime-soft)}
.btn--ghost{border-color:var(--rock);color:var(--paper)}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime)}
.btn--clay{background:var(--clay);color:#20120A}
.btn--clay:hover{background:var(--orange);color:#1A0E06}

.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  border:1px solid var(--rock);color:var(--mist);
}
.pill--lime{color:var(--lime);border-color:rgba(198,242,74,.45);background:rgba(198,242,74,.1)}
.pill--clay{color:var(--clay);border-color:rgba(217,142,98,.45)}
.pill--orange{color:var(--orange);border-color:rgba(255,122,60,.45)}

.grid{display:grid;gap:clamp(16px,2.2vw,28px)}
.grid--7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.grid--8-4{grid-template-columns:minmax(0,8fr) minmax(0,4fr)}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

.card{
  position:relative;
  display:flex;flex-direction:column;gap:10px;
  padding:22px;
  background:var(--moss);
  border:1px solid var(--rock);
  border-radius:var(--radius-card);
  transition:border-color .2s ease,translate .2s ease;
}
.card:hover{border-color:var(--lime);translate:0 -4px}
.card__index{font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--clay)}
.card__value{font-family:var(--mono);font-size:40px;line-height:1.05;color:var(--lime-soft);font-variant-numeric:tabular-nums}
.card__note{font-size:14px;line-height:1.7;color:var(--mist)}
.card__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto}

.data-block{
  display:flex;flex-direction:column;gap:8px;
  padding:20px;
  background:var(--pool);
  border:1px solid var(--rock);
  border-radius:var(--radius-card);
}
.data-block__label{font-family:var(--mono);font-size:10px;letter-spacing:.22em;color:var(--lime)}
.data-block__value{font-family:var(--mono);font-size:clamp(30px,4vw,40px);line-height:1.05;color:var(--paper);font-variant-numeric:tabular-nums}
.data-block__spark{display:block;width:100%;height:34px;color:rgba(198,242,74,.8)}

.timeline{position:relative;display:flex;flex-direction:column;gap:28px;padding-left:30px}
.timeline::before{content:"";position:absolute;left:5px;top:6px;bottom:6px;width:2px;background:var(--rock)}
.timeline__item{position:relative}
.timeline__item::before{
  content:"";position:absolute;left:-30px;top:8px;width:12px;height:12px;border-radius:50%;
  background:var(--clay);border:2px solid var(--ink);
}
.timeline__item[aria-current="step"]::before{background:var(--lime);box-shadow:0 0 0 4px rgba(198,242,74,.18)}
.timeline__anchor{font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--clay);display:block;margin-bottom:4px}
.timeline__body{display:flex;flex-direction:column;gap:6px;font-size:14px;line-height:1.75;color:var(--mist)}

.chapter-nav{display:flex;flex-direction:column;gap:5px;position:sticky;top:calc(var(--bar-h) + 26px)}
.chapter-nav__link{
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--mist);
  padding:7px 12px;border-left:2px solid var(--rock);border-radius:0 10px 10px 0;
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.chapter-nav__link:hover{color:var(--paper);border-left-color:var(--clay)}
.chapter-nav__link.is-active{color:var(--lime);border-left-color:var(--lime);background:rgba(198,242,74,.09)}

.media{
  position:relative;display:block;overflow:hidden;
  aspect-ratio:16/10;
  border-radius:var(--radius-card);
  background:var(--pool);
  border:1px solid var(--rock);
}
.media img{width:100%;height:100%;object-fit:cover}
.media--tall{aspect-ratio:4/5}
.media--wide{aspect-ratio:21/9}
.media--slant{clip-path:polygon(0 0,100% 3.5%,100% 100%,0 96.5%);border-radius:0}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 16px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;
  color:var(--paper);
  background:linear-gradient(180deg,transparent,rgba(7,29,24,.88));
}

.breadcrumbs{margin-block:22px 0}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--mist)}
.breadcrumbs__item + .breadcrumbs__item::before{content:"/";margin-right:8px;color:var(--rock)}
.breadcrumbs__link{color:var(--mist);border-bottom:1px solid transparent}
.breadcrumbs__link:hover{color:var(--lime);border-bottom-color:rgba(198,242,74,.5)}

.divider{height:1px;background:var(--rock);border:0}

.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .header-contact{display:none}
}
@media (max-width:1100px){
  :root{--rail-w:136px}
  .footer-top{grid-template-columns:1fr 1.9fr;grid-template-areas:"brand nav" "contact contact"}
  .footer-brand{grid-area:brand}
  .footer-nav{grid-area:nav}
  .footer-contact{grid-area:contact;flex-direction:row;flex-wrap:wrap;align-items:flex-start;gap:22px}
  .footer-contact__list{flex:1 1 260px}
}
@media (max-width:1040px){
  .search-strip__field--date{display:none}
}
@media (max-width:960px){
  body{padding-left:0;padding-top:64px}
  html{scroll-behavior:smooth}
  .skip-link{left:16px}
  .site-header{position:fixed;top:0;left:0;right:0;bottom:auto;height:auto;pointer-events:auto}
  .header-rail{
    position:relative;inset:auto;width:100%;height:64px;
    flex-direction:row;align-items:center;gap:12px;
    padding:0 16px;
    border-right:0;border-bottom:1px solid var(--rock);
    overflow:visible;
  }
  .brand{flex-direction:row;align-items:center;gap:11px}
  .brand__mark{width:34px;height:34px;font-size:17px;border-radius:10px}
  .brand__sub{display:none}
  .brand__name{font-size:14px;line-height:1.2}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .rail-nav{
    position:absolute;top:100%;left:0;right:0;
    display:none;flex-direction:column;gap:14px;
    padding:18px 16px 22px;
    background:var(--ink-deep);
    border-bottom:1px solid var(--rock);
    max-height:calc(100vh - 64px);
    overflow-y:auto;
  }
  .rail-nav[data-open]{display:flex}
  .rail-nav__list{gap:4px}
  .rail-nav__link{font-size:15px;padding:12px 14px;border-radius:12px}
  .rail-nav__note{border-top:1px solid var(--rock);padding-top:14px}
  .rail-foot{display:none}
  .header-bar{display:none}
  .footer-top{grid-template-columns:1fr;grid-template-areas:"brand" "nav" "contact";padding-inline:20px}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
  .footer-contact{flex-direction:column}
  .footer-bottom{padding-inline:20px;justify-content:space-between}
  .footer-copy{margin-right:0;width:100%}
  .grid--7-5,.grid--8-4{grid-template-columns:minmax(0,1fr)}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .chapter-nav{position:static;flex-direction:row;flex-wrap:wrap;gap:8px}
  .chapter-nav__link{border-left:0;border-radius:var(--radius-pill);padding:6px 13px;border:1px solid var(--rock)}
  .chapter-nav__link.is-active{border-color:var(--lime)}
  #main-content{scroll-margin-top:80px}
}
@media (max-width:560px){
  .grid--3{grid-template-columns:minmax(0,1fr)}
  .footer-nav{grid-template-columns:1fr}
  .search-strip__label{display:none}
  .section{padding-block:44px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .reveal{opacity:1;transform:none}
  .card:hover{translate:0}
}