:root{
  --ink:#0E1210;
  --deep:#0B2A22;
  --deep-2:#123C31;
  --lime:#C8FF3D;
  --lime-deep:#8FD400;
  --glow:#DFFF8A;
  --amber:#E6A15A;
  --bone:#F5F1E6;
  --mist:#8FA39A;
  --steel:#5C7A72;
  --line:rgba(92,122,114,.34);
  --line-soft:rgba(92,122,114,.18);
  --shell:1240px;
  --gutter:clamp(18px,4vw,48px);
  --pill:999px;
  --r-lg:28px;
  --r-md:18px;
  --r-sm:10px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:ui-monospace,"IBM Plex Mono","SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink);
  color:var(--bone);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.012em;
  color:var(--bone);
  margin:0 0 .62em;
}
h1{font-size:clamp(2.4rem,6.2vw,5rem);line-height:1.04}
h2{font-size:clamp(1.6rem,3vw,2.5rem)}
h3{font-size:clamp(1.16rem,1.8vw,1.5rem);font-weight:700;line-height:1.3}
h4{font-size:1.02rem;font-weight:700;line-height:1.4}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.2em}
img,picture,video,svg{max-width:100%}
img,video{height:auto}
a{color:var(--lime);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--glow)}
strong,b{font-weight:700;color:var(--bone)}
hr{border:0;border-top:1px solid var(--line-soft);margin:clamp(24px,4vw,48px) 0}
button{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
#main-content{scroll-margin-top:88px;outline:none}

.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

.skip-link{
  position:absolute;left:50%;top:0;z-index:130;
  transform:translate(-50%,-140%);
  padding:10px 22px;border-radius:0 0 var(--pill) var(--pill);
  background:var(--lime);color:#0B2A22;
  font-size:.86rem;font-weight:700;text-decoration:none;
  transition:transform .22s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translate(-50%,0);color:#0B2A22}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg,#0B2A22 0%,rgba(11,42,34,.95) 100%);
  border-bottom:1px solid var(--line-soft);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 14px 34px -26px rgba(0,0,0,.95)}
.site-header::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(90deg,rgba(200,255,61,.06) 1px,transparent 1px);
  background-size:52px 100%;opacity:.5;
}
.header-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;
  gap:clamp(12px,2.2vw,32px);
  min-height:64px;padding-block:10px;
}
.site-brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;color:var(--bone)}
.site-brand:hover{color:var(--bone)}
.brand-mark{
  width:5px;height:26px;flex:0 0 auto;border-radius:3px;
  background:linear-gradient(180deg,var(--glow) 0%,var(--lime-deep) 100%);
  box-shadow:0 0 14px rgba(200,255,61,.45);
}
.brand-text{display:flex;flex-direction:column;line-height:1.14}
.brand-name{font-family:var(--font-display);font-size:.96rem;font-weight:800;letter-spacing:.04em}
.brand-domain{font-family:var(--font-mono);font-size:.6rem;letter-spacing:.14em;color:var(--mist);margin-top:2px}

.primary-nav{flex:1 1 auto;display:flex;justify-content:center;min-width:0}
.nav-list{display:flex;align-items:center;gap:clamp(2px,1vw,12px);list-style:none;margin:0;padding:0}
.nav-item{position:relative}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 10px;border-radius:var(--r-sm);
  font-size:.82rem;letter-spacing:.06em;
  color:var(--mist);text-decoration:none;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:10px;right:10px;bottom:3px;height:2px;border-radius:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:0 50%;
  transition:transform .26s var(--ease);
}
.nav-link:hover{color:var(--bone);background:rgba(200,255,61,.07)}
.nav-link:hover::after{transform:scaleX(.5)}
.nav-link[aria-current="page"]{color:var(--lime);font-weight:700;background:rgba(200,255,61,.09)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

.status-pill{
  display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;
  margin:0;padding:6px 14px 6px 11px;border-radius:var(--pill);
  border:1px solid rgba(200,255,61,.36);background:rgba(200,255,61,.07);
  color:var(--lime);font-family:var(--font-mono);font-size:.64rem;
  letter-spacing:.1em;white-space:nowrap;
}
.status-dot{width:6px;height:6px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 3px rgba(200,255,61,.16)}

.nav-toggle{
  display:none;align-items:center;gap:9px;margin-left:auto;
  padding:9px 15px;border-radius:var(--pill);
  border:1px solid var(--line);background:transparent;
  color:var(--bone);cursor:pointer;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:rgba(200,255,61,.5);background:rgba(200,255,61,.07)}
.nav-toggle-icon{display:inline-flex;flex-direction:column;gap:4px;width:14px}
.nav-toggle-bar{display:block;width:100%;height:1.5px;border-radius:2px;background:currentColor;transition:transform .26s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:first-child{transform:translateY(5.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:last-child{transform:translateY(-5.5px) rotate(-45deg)}
.nav-toggle-label{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.16em}

.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:90;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--lime-deep) 0%,var(--lime) 55%,var(--glow) 100%);
  pointer-events:none;
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,9vw,120px);
  background:linear-gradient(180deg,var(--ink) 0%,#0B2A22 58%,var(--ink) 100%);
  border-top:1px solid var(--line-soft);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(200,255,61,.75),transparent);
  opacity:.6;
}
.footer-inner{padding-top:clamp(40px,6vw,72px)}
.footer-grid{
  display:grid;
  grid-template-columns:1.45fr 1fr 1fr 1.3fr;
  gap:clamp(24px,3.4vw,56px);
  padding-bottom:clamp(32px,5vw,56px);
}
.footer-brand-link{
  display:inline-block;text-decoration:none;
  font-family:var(--font-display);font-size:1.5rem;font-weight:800;
  letter-spacing:.02em;color:var(--bone);
}
.footer-brand-link:hover{color:var(--lime)}
.footer-domain{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.16em;color:var(--mist);margin:.4em 0 1em}
.footer-note{max-width:28ch;margin:0;font-size:.8rem;line-height:1.75;color:var(--mist)}
.footer-col-title{
  font-family:var(--font-mono);font-size:.64rem;font-weight:400;
  letter-spacing:.22em;text-transform:uppercase;
  color:var(--steel);margin:0 0 1em;
}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.footer-link{
  display:inline-block;padding:2px 0;
  font-size:.86rem;color:var(--mist);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-link:hover{color:var(--lime);border-bottom-color:rgba(200,255,61,.5)}
.footer-link[aria-current="page"]{color:var(--lime)}
.footer-contact{display:grid;gap:14px}
.contact-item{display:grid;gap:2px}
.contact-label{font-family:var(--font-mono);font-size:.58rem;letter-spacing:.18em;text-transform:uppercase;color:var(--steel)}
.contact-value{font-family:var(--font-mono);font-size:.82rem;line-height:1.6;color:var(--bone);word-break:break-word}
.contact-value--soft{font-family:var(--font-body);font-size:.8rem;color:var(--mist)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px;padding-block:20px 28px;
  border-top:1px solid var(--line-soft);
}
.footer-copy,.footer-icp{margin:0;font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;color:var(--steel)}
.footer-icp{color:var(--mist)}

.to-top{
  position:fixed;right:clamp(14px,2.5vw,30px);bottom:clamp(14px,2.5vw,30px);z-index:70;
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:50%;
  border:1px solid rgba(200,255,61,.4);
  background:rgba(11,42,34,.92);color:var(--lime);
  font-family:var(--font-mono);font-size:.9rem;cursor:pointer;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease),background .2s var(--ease);
}
.to-top[data-visible="true"]{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{background:rgba(200,255,61,.16)}

/* ---------- shared atoms ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:.7em;
  margin:0 0 .9em;
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--mist);
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--lime)}
.index-num{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.16em;color:var(--lime)}
.data-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:1rem;letter-spacing:.02em}
.tag{
  display:inline-flex;align-items:center;gap:.4em;
  padding:.28em .85em;border-radius:var(--pill);
  border:1px solid var(--line);
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;
  color:var(--mist);
}
.tag--lime{color:var(--lime);border-color:rgba(200,255,61,.4);background:rgba(200,255,61,.08)}
.tag--amber{color:var(--amber);border-color:rgba(230,161,90,.42);background:rgba(230,161,90,.09)}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 24px;border-radius:var(--pill);
  border:1px solid transparent;
  font-size:.86rem;font-weight:700;letter-spacing:.06em;text-decoration:none;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:var(--lime);color:#0B2A22}
.btn--primary:hover{background:var(--glow);color:#0B2A22}
.btn--ghost{border-color:rgba(200,255,61,.42);color:var(--lime);background:transparent}
.btn--ghost:hover{background:rgba(200,255,61,.1);color:var(--glow)}

.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;
  list-style:none;margin:0 0 clamp(20px,3vw,36px);padding:0;
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;color:var(--steel);
}
.breadcrumbs li{display:inline-flex;align-items:center}
.breadcrumbs li+li::before{content:"/";margin:0 .7em;color:var(--steel);opacity:.7}
.breadcrumbs a{color:var(--mist);text-decoration:none}
.breadcrumbs a:hover{color:var(--lime)}
.breadcrumbs [aria-current="page"]{color:var(--bone)}

.prose{max-width:68ch;font-size:1.02rem;line-height:1.8;color:rgba(245,241,230,.86)}
.prose h2,.prose h3{margin-top:1.8em}
.prose ul,.prose ol{padding-left:1.3em}

.grid{display:grid;gap:clamp(14px,2vw,26px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}

.card{
  position:relative;
  padding:clamp(18px,2.4vw,30px);
  border-radius:var(--r-lg);
  border:1px solid var(--line-soft);
  background:linear-gradient(155deg,rgba(18,60,49,.88) 0%,rgba(14,18,16,.94) 100%);
  transition:transform .3s var(--ease),border-color .3s var(--ease);
}
.card:hover{transform:translateY(-3px);border-color:rgba(200,255,61,.3)}
.card--archive{
  background:linear-gradient(155deg,#2A2016 0%,#171310 100%);
  border-color:rgba(230,161,90,.28);
}
.card--archive:hover{border-color:rgba(230,161,90,.55)}
.card-title{font-family:var(--font-display);font-size:1.1rem;font-weight:700;line-height:1.35;margin:0 0 .45em;color:var(--bone)}
.card-meta{font-family:var(--font-mono);font-size:.64rem;letter-spacing:.16em;text-transform:uppercase;color:var(--steel);margin:0 0 .9em}

.media-frame{
  position:relative;display:block;overflow:hidden;
  border-radius:var(--r-lg);
  background:linear-gradient(160deg,var(--deep-2),var(--ink));
  aspect-ratio:16/10;
}
.media-frame>img,.media-frame>picture>img,.media-frame>video{
  display:block;width:100%;height:100%;object-fit:cover;
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(14,18,16,0) 48%,rgba(14,18,16,.68) 100%);
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--archive>img,.media-frame--archive>picture>img{filter:sepia(.35) saturate(.78) contrast(1.05)}
.media-frame--clean::after{display:none}
.media-caption{
  margin:.7em 0 0;
  font-family:var(--font-mono);font-size:.64rem;letter-spacing:.12em;
  color:var(--steel);
}

/* ---------- motion ---------- */
.has-js [data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}
.has-js [data-reveal].is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .status-pill{display:none}
}
@media (max-width:959px){
  .nav-toggle{display:inline-flex}
  .primary-nav{
    position:absolute;left:0;right:0;top:100%;
    display:none;
    padding:8px var(--gutter) 24px;
    background:linear-gradient(180deg,#0B2A22 0%,var(--ink) 100%);
    border-bottom:1px solid var(--line);
    box-shadow:0 30px 44px -30px rgba(0,0,0,.95);
  }
  .primary-nav[data-open="true"]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{
    display:block;padding:13px 4px;border-radius:0;
    font-size:.94rem;letter-spacing:.04em;
    border-bottom:1px solid var(--line-soft);
  }
  .nav-link:hover{background:transparent}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{
    color:var(--lime);background:transparent;
    border-bottom-color:rgba(200,255,61,.42);
  }
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:620px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:clamp(22px,5vw,34px)}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .brand-domain{letter-spacing:.1em}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0ms !important;
    scroll-behavior:auto !important;
  }
  .has-js [data-reveal]{opacity:1 !important;transform:none !important}
  .scroll-progress{display:none}
  .btn:hover{transform:none}
  .card:hover{transform:none}
}