*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body,h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,picture{max-width:100%}
button{font:inherit;color:inherit}
:root{
  --ink:#06130E;
  --ink-2:#0A0F0C;
  --panel:#0D241A;
  --panel-2:#132A22;
  --line:#1E5B44;
  --mint:#39F5B5;
  --orange:#FF8A3D;
  --text:#DFF7EA;
  --mute:#8FB9A6;
  --paper:#F6F2E8;
  --shell:1320px;
  --pad:clamp(16px,4vw,48px);
  --header-h:56px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-head:"Barlow Condensed","Oswald","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --font-body:Inter,"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
}
body{
  background-color:var(--ink);
  background-image:
    linear-gradient(to right,rgba(57,245,181,.055) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(57,245,181,.045) 1px,transparent 1px);
  background-size:120px 120px;
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.72;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--mint);color:#04170F}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:800;line-height:1.06;color:var(--paper);letter-spacing:.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--mint);text-decoration:none}
a:hover{color:#7CFFD2}
strong{color:var(--paper);font-weight:600}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;font-size:.93em}
.num{font-family:var(--font-mono);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:.01em;color:var(--mint)}
.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}
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--pad)}
.site-main{display:block;min-height:46vh}

/* ---------- skip link ---------- */
.skip-link{position:absolute;left:16px;top:-80px;z-index:300;display:inline-block;padding:11px 18px;background:var(--mint);color:#04170F;font-size:13px;font-weight:700;letter-spacing:.04em;border-radius:2px;transition:top .14s var(--ease)}
.skip-link:focus{top:12px;color:#04170F}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(10,15,12,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(8px);
}
.site-header[data-scrolled]{background:rgba(6,19,14,.98);box-shadow:0 12px 28px rgba(0,0,0,.34)}
.header-meter{position:absolute;left:0;right:0;bottom:-1px;height:2px;overflow:hidden;pointer-events:none}
.header-meter__fill{display:block;width:100%;height:100%;transform:scaleX(0);transform-origin:0 50%;background:linear-gradient(90deg,var(--mint) 0%,var(--mint) 55%,var(--orange) 100%)}
.header-shell{display:flex;align-items:center;gap:clamp(10px,2vw,26px);min-height:var(--header-h)}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;padding-block:9px;color:var(--paper);text-decoration:none}
.brand:hover{color:var(--paper)}
.brand__mark{display:inline-block;padding:3px 8px 4px;background:var(--mint);color:#04170F;font-family:var(--font-mono);font-size:19px;font-weight:700;line-height:1;letter-spacing:-.02em;border-radius:2px;transition:background .14s var(--ease)}
.brand:hover .brand__mark{background:var(--orange)}
.brand__text{display:flex;flex-direction:column;gap:4px;line-height:1}
.brand__name{font-family:var(--font-head);font-size:17px;font-weight:800;letter-spacing:.16em;color:var(--paper)}
.brand__meta{font-family:var(--font-mono);font-size:9px;letter-spacing:.22em;text-transform:uppercase;color:var(--mute)}

.nav-toggle{display:none;order:3;align-items:center;gap:8px;padding:8px 11px;background:transparent;border:1px solid var(--line);border-radius:2px;color:var(--text);font-size:12px;letter-spacing:.08em;cursor:pointer;transition:border-color .14s var(--ease),color .14s var(--ease)}
.nav-toggle:hover{border-color:var(--mint);color:var(--mint)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:14px}
.nav-toggle__bars i{display:block;height:1.5px;background:currentColor;transition:transform .16s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:first-child{transform:translateY(5.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:last-child{transform:translateY(-5.5px) rotate(-45deg)}

.site-nav{margin-inline:auto}
.nav-list{display:flex;align-items:center;gap:clamp(0px,.9vw,12px)}
.nav-item{position:relative}
.nav-link{position:relative;display:inline-flex;align-items:baseline;gap:6px;padding:10px;font-size:13.5px;font-weight:500;color:var(--text);white-space:nowrap;letter-spacing:.02em;transition:color .14s var(--ease)}
.nav-link::after{content:"";position:absolute;left:10px;right:10px;bottom:4px;height:2px;background:var(--mint);transform:scaleX(0);transform-origin:0 50%;transition:transform .16s var(--ease)}
.nav-link:hover{color:var(--mint)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link:hover .nav-index{color:var(--orange)}
.nav-link[aria-current="page"]{color:var(--mint)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-link[aria-current="page"] .nav-index{color:var(--orange)}
.nav-index{font-family:var(--font-mono);font-size:10px;letter-spacing:.04em;color:var(--mute);transition:color .14s var(--ease)}

.header-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;order:2}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;padding:11px 18px;background:transparent;border:1px solid var(--line);border-radius:2px;color:var(--text);font-family:var(--font-body);font-size:13px;font-weight:600;letter-spacing:.02em;text-align:center;cursor:pointer;transition:background .14s var(--ease),border-color .14s var(--ease),color .14s var(--ease)}
.btn:focus-visible{outline:2px solid var(--mint);outline-offset:3px;box-shadow:0 0 0 1px var(--ink-2)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn--ghost:hover{border-color:var(--mint);color:var(--mint);background:rgba(57,245,181,.08)}
.btn--primary{background:var(--mint);border-color:var(--mint);color:#04170F}
.btn--primary:hover{background:#63FFC9;border-color:#63FFC9;color:#04170F}
.btn--sm{padding:8px 13px;font-size:12px;letter-spacing:.04em}

/* ---------- footer ---------- */
.site-footer{position:relative;margin-top:clamp(48px,8vw,96px);background:var(--ink-2);border-top:1px solid var(--line)}
.site-footer::before{content:"";position:absolute;inset:0 0 auto 0;height:2px;background:linear-gradient(90deg,var(--mint) 0%,var(--mint) 40%,var(--orange) 60%,var(--orange) 100%);opacity:.9}
.footer-shell{padding-block:clamp(34px,5vw,62px) 0}
.footer-grid{display:grid;grid-template-columns:1.7fr .9fr .9fr 1.4fr;gap:clamp(24px,3vw,48px)}
.footer-brand{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.footer-domain{margin:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--mute)}
.footer-note{margin:0;max-width:32ch;font-size:13px;line-height:1.7;color:var(--text)}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}
.footer-col{min-width:0}
.footer-title{margin:0 0 14px;font-family:var(--font-mono);font-size:10px;font-weight:600;letter-spacing:.24em;text-transform:uppercase;color:var(--mute);line-height:1.4}
.footer-list{display:flex;flex-direction:column;gap:9px}
.footer-link{position:relative;display:inline-block;padding-bottom:2px;font-size:13.5px;color:var(--text);transition:color .14s var(--ease)}
.footer-link::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--mint);transform:scaleX(0);transform-origin:0 50%;transition:transform .16s var(--ease)}
.footer-link:hover{color:var(--mint)}
.footer-link:hover::after{transform:scaleX(1)}
.contact-list{display:flex;flex-direction:column;gap:11px}
.contact-row{display:grid;grid-template-columns:46px minmax(0,1fr);gap:10px;align-items:baseline;font-size:13px;line-height:1.6}
.contact-key{font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--mute)}
.contact-val{color:var(--text);word-break:break-word}
.contact-val--mono{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.01em;color:var(--paper)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;margin-top:clamp(28px,4vw,44px);padding-block:18px;border-top:1px solid var(--line)}
.footer-copy{margin:0;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;color:var(--mute)}

/* ---------- shared content components ---------- */
.breadcrumbs{margin-top:clamp(14px,2vw,22px)}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--mute)}
.breadcrumbs__link{color:var(--mute);transition:color .14s var(--ease)}
.breadcrumbs__link:hover{color:var(--mint)}
.breadcrumbs__sep{color:var(--line)}
.breadcrumbs [aria-current="page"]{color:var(--text)}

.page-head{padding-block:clamp(26px,4.5vw,54px) clamp(18px,3vw,30px);border-bottom:1px solid var(--line)}
.page-title{margin:0 0 14px;font-size:clamp(34px,6vw,72px);line-height:.98;letter-spacing:-.01em;text-wrap:balance}
.page-lede{max-width:60ch;margin:0;font-size:clamp(14px,1.5vw,16px);line-height:1.74;color:var(--mute)}

.eyebrow{display:inline-flex;align-items:center;gap:10px;margin:0 0 14px;font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--mint)}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--mint)}

.section{padding-block:clamp(34px,5.5vw,68px)}
.section-head{display:grid;grid-template-columns:auto minmax(0,1fr);gap:clamp(12px,2vw,28px);align-items:start;margin-bottom:clamp(20px,3vw,32px)}
.section-num{font-family:var(--font-mono);font-size:clamp(26px,4vw,44px);font-weight:700;line-height:.9;color:var(--line);letter-spacing:-.02em}
.section-title{margin:0;font-size:clamp(23px,3.4vw,40px);line-height:1.05;color:var(--paper)}

.rule{height:1px;border:0;background:var(--line);margin:clamp(22px,4vw,38px) 0}
.band{display:block;width:100%;height:3px;border:0;background:linear-gradient(90deg,var(--mint),var(--orange))}

.panel{position:relative;padding:clamp(18px,2.4vw,28px);background:var(--panel);border:1px solid var(--line);border-radius:2px}
.panel--accent::before{content:"";position:absolute;inset:0 auto 0 0;width:2px;background:linear-gradient(180deg,var(--mint),var(--orange))}
.panel--link{display:block;color:inherit;transition:border-color .14s var(--ease),background .14s var(--ease)}
.panel--link:hover,.panel--link:focus-visible{border-color:var(--mint);background:var(--panel-2);color:inherit}
.panel__num{display:block;margin-bottom:10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;color:var(--orange)}
.panel__title{margin:0 0 8px;font-family:var(--font-head);font-size:clamp(19px,2.4vw,27px);font-weight:800;line-height:1.12;color:var(--paper)}
.panel__note{margin:0;font-size:13.5px;line-height:1.7;color:var(--mute)}

.grid{display:grid;gap:clamp(14px,2vw,24px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--split{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr)}
.stack>*+*{margin-top:clamp(14px,2vw,22px)}

.index-list{display:flex;flex-direction:column}
.index-link{display:flex;align-items:baseline;gap:12px;padding:12px 2px;border-bottom:1px solid rgba(30,91,68,.6);font-size:14px;color:var(--text);transition:color .14s var(--ease),padding-left .14s var(--ease)}
.index-link:hover{color:var(--mint);padding-left:7px}

.chip{display:inline-flex;align-items:center;gap:6px;padding:4px 9px;border:1px solid var(--line);border-radius:2px;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--mute)}
.chip--live{border-color:var(--mint);color:var(--mint)}
.chip--hot{border-color:var(--orange);color:var(--orange)}

.prose{max-width:70ch;font-size:15px;line-height:1.78}
.prose p{margin:0 0 1.1em}
.prose h2,.prose h3{margin:1.5em 0 .6em;font-size:clamp(20px,2.4vw,26px)}
.prose a{color:var(--mint);text-decoration:underline;text-underline-offset:3px}

.media{position:relative;display:block;overflow:hidden;aspect-ratio:16/10;background:linear-gradient(160deg,var(--panel) 0%,var(--panel-2) 100%);border:1px solid var(--line);border-radius:2px}
.media img,.media picture img{display:block;width:100%;height:100%;object-fit:cover}
.media::after{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(90deg,rgba(57,245,181,.07) 1px,transparent 1px),linear-gradient(180deg,rgba(57,245,181,.07) 1px,transparent 1px);background-size:32px 32px}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media--cut{clip-path:polygon(0 0,100% 0,100% 82%,88% 100%,0 100%)}
.media__label{position:absolute;left:0;bottom:0;z-index:2;display:inline-block;padding:6px 12px;background:var(--ink-2);border-top:1px solid var(--line);border-right:1px solid var(--line);font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--mute)}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .nav-link{padding:10px 8px;font-size:13px}
  .nav-link::after{left:8px;right:8px}
}
@media (max-width:1000px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:960px){
  .nav-toggle{display:inline-flex}
  .header-shell{flex-wrap:wrap;gap:8px 12px;padding-block:0}
  .brand{order:1}
  .header-actions{order:2;margin-left:auto}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;margin:0;
    padding:10px var(--pad) 20px;
    background:var(--ink-2);border-bottom:1px solid var(--line);
    box-shadow:0 24px 40px rgba(0,0,0,.45);
    max-height:calc(100vh - var(--header-h));overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .16s var(--ease),transform .16s var(--ease),visibility .16s linear;
  }
  .site-nav[data-open]{opacity:1;visibility:visible;transform:none}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item+.nav-item{border-top:1px solid rgba(30,91,68,.45)}
  .nav-link{width:100%;padding:14px 4px;font-size:16px;letter-spacing:.04em}
  .nav-link::after{left:4px;right:auto;width:26px;bottom:9px}
  .nav-index{font-size:11px}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--split{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:820px){
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
  .section-head{grid-template-columns:minmax(0,1fr);gap:8px}
  .section-num{font-size:26px}
}
@media (max-width:620px){
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .contact-row{grid-template-columns:42px minmax(0,1fr)}
}
@media (max-width:560px){
  .header-actions .btn--ghost{display:none}
  .brand__meta{display:none}
  .nav-toggle__label{display:none}
  .page-title{font-size:clamp(30px,9vw,42px)}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}