*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:var(--hh-header-h)}
body,h1,h2,h3,h4,p,ul,ol,li,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{max-width:100%;display:block}

:root{
  --hh-void:#05070E;
  --hh-panel:#0C1220;
  --hh-panel-2:#111A2B;
  --hh-rule:#1E2A3F;
  --hh-white:#F2F5FA;
  --hh-cyan:#22E0D6;
  --hh-orange:#FF6A2B;
  --hh-dusk:#6B4BC9;
  --hh-muted:#6F7E93;
  --hh-amber:#FFC24B;
  --hh-ink:#04121A;
  --hh-text:#D5DEEA;
  --hh-text-soft:#A9B8CC;
  --hh-radius:24px;
  --hh-radius-lg:28px;
  --hh-radius-sm:16px;
  --hh-pill:999px;
  --hh-header-h:70px;
  --hh-max:1360px;
  --hh-gutter:clamp(20px,5vw,96px);
  --hh-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --hh-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

body{
  min-height:100vh;
  padding-top:var(--hh-header-h);
  background-color:var(--hh-void);
  background-image:
    radial-gradient(1100px 620px at 88% -10%, rgba(107,75,201,.30), transparent 62%),
    radial-gradient(760px 480px at 2% 14%, rgba(34,224,214,.10), transparent 66%),
    linear-gradient(180deg,#05070E 0%,#070B16 46%,#05070E 100%);
  background-attachment:fixed;
  color:var(--hh-text);
  font-family:var(--hh-sans);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  overflow-x:hidden;
}

h1,h2,h3,h4{color:var(--hh-white);font-weight:800;line-height:1.15;letter-spacing:-0.02em}
h1{font-size:clamp(34px,6vw,68px)}
h2{font-size:clamp(24px,3.4vw,38px)}
h3{font-size:clamp(18px,2vw,22px);letter-spacing:-0.01em}
p{max-width:34em}

a{color:inherit}
:focus-visible{outline:2px solid var(--hh-cyan);outline-offset:3px;border-radius:8px}

.hh-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}
.hh-muted{color:var(--hh-muted)}
.hh-mono{font-family:var(--hh-mono);letter-spacing:.04em}
.hh-center{text-align:center}

/* ---------- header ---------- */
.hh-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  background:rgba(5,7,14,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--hh-rule);
}
.hh-header__inner{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:clamp(12px,2vw,28px);
  width:100%;
  max-width:var(--hh-max);
  height:var(--hh-header-h);
  margin-inline:auto;
  padding-inline:var(--hh-gutter);
}
.hh-skip{
  position:absolute;
  left:var(--hh-gutter);
  top:-72px;
  z-index:200;
  padding:10px 18px;
  border-radius:var(--hh-pill);
  background:var(--hh-cyan);
  color:var(--hh-ink);
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  transition:top .18s ease;
}
.hh-skip:focus{top:10px}

.hh-brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;color:var(--hh-white);min-width:0}
.hh-brand__mark{
  width:34px;height:34px;flex:0 0 34px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(140deg,var(--hh-cyan),var(--hh-dusk));
  color:var(--hh-ink);
  font-family:var(--hh-mono);
  font-size:15px;
  font-weight:800;
  line-height:1;
}
.hh-brand__text{display:block;min-width:0}
.hh-brand__name{display:block;font-size:15px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.hh-brand__sub{display:block;font-family:var(--hh-mono);font-size:10px;letter-spacing:.22em;color:var(--hh-muted);white-space:nowrap}

.hh-nav{display:flex;align-items:center;justify-content:center;gap:4px;min-width:0}
.hh-nav__link{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 12px;
  border-radius:var(--hh-pill);
  border:1px solid transparent;
  color:#C3CEDE;
  font-size:14px;
  text-decoration:none;
  white-space:nowrap;
  transition:color .16s ease,background .16s ease,border-color .16s ease,transform .16s ease;
}
.hh-nav__link:hover{color:var(--hh-white);background:rgba(34,224,214,.08);border-color:rgba(34,224,214,.45);transform:translateY(-1px)}
.hh-nav__link[aria-current="page"]{color:var(--hh-white);background:rgba(34,224,214,.13);border-color:rgba(34,224,214,.6)}
.hh-nav__link[aria-current="page"] .hh-nav__idx{color:var(--hh-cyan)}
.hh-nav__idx{font-family:var(--hh-mono);font-size:10px;letter-spacing:.08em;color:var(--hh-muted)}

.hh-actions{display:flex;align-items:center;gap:10px;justify-self:end}
.hh-status{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 12px;
  border-radius:var(--hh-pill);
  border:1px solid var(--hh-rule);
  background:rgba(12,18,32,.9);
  font-family:var(--hh-mono);
  font-size:11px;
  letter-spacing:.05em;
  color:var(--hh-text-soft);
  white-space:nowrap;
}
.hh-status__dot{width:7px;height:7px;flex:0 0 7px;border-radius:50%;background:var(--hh-orange);box-shadow:0 0 0 3px rgba(255,106,43,.18)}
.hh-status__text{display:inline-block}
.hh-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 18px;
  border-radius:var(--hh-pill);
  background:linear-gradient(120deg,var(--hh-cyan),#19B4C6);
  color:var(--hh-ink);
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  white-space:nowrap;
  transition:transform .16s ease,box-shadow .16s ease;
}
.hh-cta:hover{transform:translateY(-1px);box-shadow:0 0 0 4px rgba(34,224,214,.18)}

.hh-burger{
  display:none;align-items:center;gap:8px;
  padding:9px 14px;
  border-radius:var(--hh-pill);
  border:1px solid var(--hh-rule);
  background:rgba(12,18,32,.9);
  color:var(--hh-white);
  font-family:var(--hh-mono);
  font-size:11px;
  letter-spacing:.16em;
  cursor:pointer;
  transition:border-color .16s ease,color .16s ease;
}
.hh-burger:hover{border-color:var(--hh-cyan);color:var(--hh-cyan)}
.hh-burger__bars{position:relative;width:16px;height:10px;display:block}
.hh-burger__bars::before,.hh-burger__bars::after{
  content:"";position:absolute;left:0;right:0;height:1.5px;background:currentColor;
  transition:transform .2s ease;
}
.hh-burger__bars::before{top:0}
.hh-burger__bars::after{bottom:0}
.hh-header[data-open] .hh-burger__bars::before{transform:translateY(4px) rotate(45deg)}
.hh-header[data-open] .hh-burger__bars::after{transform:translateY(-4px) rotate(-45deg)}
.hh-burger__label{display:inline-block}

.hh-progress{position:absolute;left:0;right:0;bottom:0;height:2px;pointer-events:none;overflow:hidden}
.hh-progress__bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--hh-cyan),var(--hh-orange));
}

/* ---------- footer ---------- */
.hh-footer{
  margin-top:clamp(56px,8vw,110px);
  border-top:1px solid var(--hh-rule);
  background:linear-gradient(180deg,#080D18 0%,#05070E 62%);
}
.hh-footer__inner{
  width:100%;
  max-width:var(--hh-max);
  margin-inline:auto;
  padding:clamp(40px,6vw,72px) var(--hh-gutter) 32px;
}
.hh-footer__top{
  display:grid;
  grid-template-columns:minmax(240px,1.05fr) 2fr;
  gap:clamp(24px,5vw,64px);
  padding-bottom:clamp(24px,3vw,36px);
  border-bottom:1px solid var(--hh-rule);
}
.hh-footer__logo{margin:0;font-size:22px;font-weight:800;letter-spacing:-0.01em;color:var(--hh-white)}
.hh-footer__tagline{margin:8px 0 0;max-width:30ch;font-size:14px;color:var(--hh-muted)}
.hh-footer__meta{margin:14px 0 0;font-family:var(--hh-mono);font-size:11px;letter-spacing:.14em;color:var(--hh-cyan)}
.hh-footer__cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2.4vw,32px)}
.hh-footer__title{
  margin:0 0 12px;
  font-family:var(--hh-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.2em;
  color:var(--hh-muted);
}
.hh-footer__links{display:grid;gap:9px}
.hh-footer__links a{
  display:inline-block;
  font-size:14px;
  color:#C6D2E2;
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s ease,border-color .16s ease,transform .16s ease;
}
.hh-footer__links a:hover{color:var(--hh-cyan);border-color:rgba(34,224,214,.6);transform:translateX(2px)}
.hh-footer__contact{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:18px 30px;
  padding:clamp(24px,3vw,34px) 0;
  border-bottom:1px solid var(--hh-rule);
}
.hh-footer__contact-item{min-width:0}
.hh-footer__label{display:block;margin-bottom:5px;font-family:var(--hh-mono);font-size:10.5px;letter-spacing:.18em;color:var(--hh-muted)}
.hh-footer__value{margin:0;max-width:34em;font-size:14px;color:var(--hh-white);word-break:break-word}
.hh-footer__bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding-top:22px;
}
.hh-footer__legal{margin:0;font-family:var(--hh-mono);font-size:12px;letter-spacing:.04em;color:var(--hh-muted)}
.hh-totop{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;
  border-radius:var(--hh-pill);
  border:1px solid var(--hh-rule);
  background:rgba(12,18,32,.85);
  color:#C6D2E2;
  font-family:var(--hh-mono);
  font-size:11px;
  letter-spacing:.14em;
  cursor:pointer;
  transition:border-color .16s ease,color .16s ease,transform .16s ease;
}
.hh-totop:hover{border-color:var(--hh-cyan);color:var(--hh-cyan);transform:translateY(-1px)}
.hh-totop[hidden]{display:none}

/* ---------- layout helpers ---------- */
.hh-container{width:100%;max-width:var(--hh-max);margin-inline:auto;padding-inline:var(--hh-gutter)}
.hh-section{padding:clamp(40px,6.5vw,88px) 0}
.hh-rule{height:1px;border:0;margin:clamp(26px,4vw,54px) 0;background:linear-gradient(90deg,var(--hh-rule),rgba(30,42,63,.15) 70%,transparent)}
.hh-grid{display:grid;gap:clamp(18px,2.4vw,28px)}
.hh-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.hh-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.hh-grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.hh-grid--auto{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}

.hh-slice{position:relative;clip-path:polygon(0 0,100% 0,100% calc(100% - 34px),0 100%)}
.hh-slice--alt{position:relative;clip-path:polygon(0 34px,100% 0,100% 100%,0 100%)}

/* ---------- panels ---------- */
.hh-panel{
  position:relative;
  padding:clamp(22px,3.4vw,40px);
  border:1px solid var(--hh-rule);
  border-radius:var(--hh-radius);
  background:linear-gradient(180deg,rgba(12,18,32,.96),rgba(8,13,24,.96));
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.hh-panel:hover{border-color:rgba(34,224,214,.42)}
.hh-panel--narrow{max-width:560px}
.hh-panel--accent{border-left:3px solid var(--hh-cyan)}

/* ---------- index / tags ---------- */
.hh-index{
  display:inline-block;
  padding:4px 13px;
  border-radius:var(--hh-pill);
  border:1px solid var(--hh-rule);
  background:rgba(12,18,32,.8);
  font-family:var(--hh-mono);
  font-size:12px;
  letter-spacing:.24em;
  color:var(--hh-cyan);
}
.hh-eyebrow{
  margin:0 0 10px;
  font-family:var(--hh-mono);
  font-size:11px;
  letter-spacing:.26em;
  color:var(--hh-muted);
}
.hh-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;
  border-radius:var(--hh-pill);
  border:1px solid var(--hh-rule);
  background:rgba(12,18,32,.72);
  font-family:var(--hh-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--hh-text-soft);
}
.hh-tag--cyan{color:var(--hh-cyan);border-color:rgba(34,224,214,.45);background:rgba(34,224,214,.08)}
.hh-tag--orange{color:var(--hh-orange);border-color:rgba(255,106,43,.45);background:rgba(255,106,43,.08)}
.hh-tag--amber{color:var(--hh-amber);border-color:rgba(255,194,75,.45);background:rgba(255,194,75,.08)}

/* ---------- buttons ---------- */
.hh-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  border-radius:var(--hh-pill);
  border:1px solid var(--hh-rule);
  background:rgba(12,18,32,.9);
  color:var(--hh-white);
  font-family:inherit;
  font-size:15px;
  font-weight:600;
  text-decoration:none;
  cursor:pointer;
  transition:border-color .16s ease,color .16s ease,transform .16s ease,box-shadow .16s ease,background .16s ease;
}
.hh-btn:hover{border-color:var(--hh-cyan);color:var(--hh-cyan);transform:translateY(-1px)}
.hh-btn--primary{background:linear-gradient(120deg,var(--hh-cyan),#19B4C6);color:var(--hh-ink);border-color:transparent}
.hh-btn--primary:hover{color:var(--hh-ink);box-shadow:0 0 0 4px rgba(34,224,214,.18)}
.hh-btn--ghost{background:transparent}
.hh-btn--block{width:100%}

/* ---------- breadcrumb ---------- */
.hh-breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin:0 0 18px;
  font-family:var(--hh-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  color:var(--hh-muted);
}
.hh-breadcrumb li{display:flex;align-items:center;gap:8px}
.hh-breadcrumb li+li::before{content:"/";color:var(--hh-rule)}
.hh-breadcrumb a{color:var(--hh-text-soft);text-decoration:none;transition:color .16s ease}
.hh-breadcrumb a:hover{color:var(--hh-cyan)}
.hh-breadcrumb [aria-current="page"]{color:var(--hh-white)}

/* ---------- prose ---------- */
.hh-prose{max-width:34em;font-size:17px;color:var(--hh-text)}
.hh-prose p{margin-bottom:1.15em;max-width:34em}
.hh-prose h2{margin:1.6em 0 .55em;font-size:clamp(24px,3vw,34px)}
.hh-prose h3{margin:1.4em 0 .45em;font-size:20px}
.hh-prose ul,.hh-prose ol{margin:0 0 1.2em;padding-left:1.25em;list-style:disc}
.hh-prose ol{list-style:decimal}
.hh-prose li{margin-bottom:.45em}
.hh-prose a{color:var(--hh-cyan);text-decoration:none;border-bottom:1px solid rgba(34,224,214,.35);transition:background .16s ease,border-color .16s ease}
.hh-prose a:hover{border-color:var(--hh-cyan);background:rgba(34,224,214,.1)}
.hh-prose strong{color:var(--hh-white);font-weight:700}

/* ---------- numbers ---------- */
.hh-stat{display:grid;gap:6px}
.hh-stat__value{
  font-family:var(--hh-mono);
  font-size:clamp(30px,4.4vw,52px);
  font-weight:700;
  line-height:1;
  letter-spacing:-0.02em;
  color:var(--hh-white);
}
.hh-stat__value--orange{color:var(--hh-orange)}
.hh-stat__value--cyan{color:var(--hh-cyan)}
.hh-stat__label{font-family:var(--hh-mono);font-size:11px;letter-spacing:.18em;color:var(--hh-muted)}

/* ---------- archive list ---------- */
.hh-stack{display:grid;gap:14px}
.hh-item{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:16px;
  padding:16px 20px;
  border:1px solid var(--hh-rule);
  border-radius:var(--hh-radius-sm);
  background:rgba(12,18,32,.72);
  transition:border-color .18s ease,transform .18s ease,background .18s ease;
}
.hh-item:hover{border-color:rgba(34,224,214,.45);background:rgba(16,24,40,.85);transform:translateX(2px)}
.hh-item__idx{font-family:var(--hh-mono);font-size:12px;letter-spacing:.1em;color:var(--hh-cyan)}
.hh-item__title{font-size:15.5px;font-weight:600;color:var(--hh-white)}
.hh-item__meta{font-family:var(--hh-mono);font-size:11.5px;letter-spacing:.08em;color:var(--hh-muted);white-space:nowrap}

/* ---------- media frame ---------- */
.hh-media{
  position:relative;
  overflow:hidden;
  border:1px solid var(--hh-rule);
  border-radius:var(--hh-radius-lg);
  background:
    radial-gradient(120% 90% at 80% 0%, rgba(107,75,201,.34), transparent 60%),
    linear-gradient(155deg,#0C1220 0%,#05070E 72%);
}
.hh-media img{width:100%;height:100%;object-fit:cover}
.hh-media--wide{aspect-ratio:16/9}
.hh-media--tall{aspect-ratio:3/4}
.hh-media--square{aspect-ratio:1/1}
.hh-media__placeholder{
  position:absolute;inset:0;
  display:grid;place-items:center;
  padding:20px;
  font-family:var(--hh-mono);
  font-size:11px;
  letter-spacing:.22em;
  color:var(--hh-muted);
  text-align:center;
}

/* ---------- reveal ---------- */
.hh-js [data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.hh-js [data-reveal].is-visible{opacity:1;transform:translateY(0)}

/* ---------- responsive ---------- */
@media (max-width:1240px){
  .hh-brand__sub{display:none}
  .hh-nav__link{padding:8px 9px;font-size:13.5px}
  .hh-status{display:none}
}
@media (max-width:1060px){
  .hh-burger{display:inline-flex}
  .hh-header__inner{grid-template-columns:auto minmax(0,1fr) auto}
  .hh-nav{
    position:fixed;
    top:var(--hh-header-h);
    left:0;right:0;
    display:grid;
    justify-content:stretch;
    gap:6px;
    max-height:0;
    overflow:hidden;
    padding:0 var(--hh-gutter);
    background:rgba(5,7,14,.98);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid transparent;
    transition:max-height .28s ease,padding .28s ease;
  }
  .hh-header[data-open] .hh-nav{
    max-height:min(74vh,540px);
    overflow-y:auto;
    padding:16px var(--hh-gutter) 24px;
    border-bottom-color:var(--hh-rule);
  }
  .hh-nav__link{
    justify-content:flex-start;
    padding:13px 15px;
    border-radius:14px;
    border-color:var(--hh-rule);
    background:rgba(12,18,32,.72);
    font-size:15.5px;
  }
  .hh-item{grid-template-columns:auto minmax(0,1fr);grid-template-areas:"idx title" ". meta";gap:6px 14px}
  .hh-item__idx{grid-area:idx}
  .hh-item__title{grid-area:title}
  .hh-item__meta{grid-area:meta;white-space:normal}
}
@media (max-width:900px){
  .hh-grid--3,.hh-grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hh-footer__top{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:640px){
  :root{--hh-header-h:64px}
  body{font-size:16px}
  .hh-brand__sub{display:none}
  .hh-grid--2,.hh-grid--3,.hh-grid--4{grid-template-columns:minmax(0,1fr)}
  .hh-footer__cols{grid-template-columns:repeat(auto-fit,minmax(132px,1fr))}
  .hh-footer__bottom{align-items:flex-start;flex-direction:column-reverse}
}
@media (max-width:480px){
  .hh-brand__name{display:none}
  .hh-cta{padding:10px 14px;font-size:13px}
  .hh-burger__label{display: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}
  .hh-js [data-reveal]{opacity:1;transform:none}
}