*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
main{display:block}

:root{
  --bg:#061A14;
  --panel:#0B2A20;
  --frame:#132F36;
  --cyan:#2DF5D0;
  --orange:#FF9A3D;
  --haze:#A9C4C9;
  --mist:#EAF6F1;
  --muted:#5E807A;
  --hover:#17483B;
  --coral:#FF6B5A;
  --line:rgba(234,246,241,.12);
  --line-strong:rgba(234,246,241,.22);
  --rail:220px;
  --strip:44px;
  --bar:60px;
  --shadow:0 8px 24px rgba(0,0,0,.18);
  --radius:3px;
  --wrap:1360px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-display:"Barlow Condensed","Oswald","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-data:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}

body{
  min-height:100vh;
  padding-top:var(--bar);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  color:var(--mist);
  background-color:var(--bg);
  background-image:
    repeating-linear-gradient(115deg,rgba(45,245,208,.05) 0 1px,transparent 1px 92px),
    radial-gradient(1100px 560px at 82% -8%,rgba(45,245,208,.10),transparent 68%),
    radial-gradient(760px 420px at 4% 106%,rgba(255,154,61,.08),transparent 70%);
  background-attachment:fixed;
}
::selection{background:rgba(45,245,208,.28);color:var(--mist)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:2px}
#main-content:focus{outline:none}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;letter-spacing:-.02em;line-height:1.08;color:var(--mist)}
h1{font-size:clamp(2.4rem,5vw,4.4rem)}
h2{font-size:clamp(1.7rem,3vw,2.6rem)}
h3{font-size:clamp(1.15rem,1.6vw,1.5rem);letter-spacing:0;line-height:1.25}
p{max-width:78ch}
strong{color:var(--cyan);font-weight:700}

.wrap{width:min(100% - 36px,var(--wrap));margin-inline:auto}
.section{padding-block:clamp(32px,5vw,64px)}
.section__head{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px 18px;padding-bottom:12px;margin-bottom:clamp(16px,2.4vw,26px);border-bottom:1px solid var(--line)}
.eyebrow{font-family:var(--font-data);font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--cyan);margin:0}
.divider{height:1px;border:0;background:var(--line);margin-block:clamp(20px,3vw,34px)}

.grid{display:grid;gap:clamp(14px,2vw,22px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}

.panel{position:relative;padding:clamp(16px,2.4vw,26px);border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(160deg,rgba(11,42,32,.97),rgba(6,26,20,.95));box-shadow:var(--shadow)}
.panel__head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;padding-bottom:11px;margin-bottom:14px;border-bottom:1px solid var(--line)}
.panel__title{font-size:1.02rem;letter-spacing:0}

.num,.data-figure{font-family:var(--font-data);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.num{color:var(--cyan)}
.data-figure{display:block;font-size:clamp(1.9rem,4.4vw,3.4rem);line-height:1;font-weight:600;color:var(--mist)}

.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border:1px solid var(--line-strong);border-radius:999px;font-size:11px;letter-spacing:.06em;line-height:1.6;color:var(--haze);background:rgba(19,47,54,.6);white-space:nowrap}
.tag--accent{color:var(--cyan);border-color:rgba(45,245,208,.42);background:rgba(45,245,208,.10)}
.tag--warn{color:var(--orange);border-color:rgba(255,154,61,.44);background:rgba(255,154,61,.10)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border:1px solid transparent;border-radius:2px;font-size:14px;font-weight:700;letter-spacing:.02em;line-height:1;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease)}
.btn--accent{background:var(--cyan);color:#04211A;box-shadow:0 8px 24px rgba(45,245,208,.18)}
.btn--accent:hover{background:#5cffe0;transform:translateY(-1px)}
.btn--accent:active{transform:none}
.btn--ghost{border-color:var(--line-strong);background:rgba(11,42,32,.62);color:var(--mist)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan)}

.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;padding-top:18px;font-family:var(--font-data);font-size:12px;letter-spacing:.06em;color:var(--muted)}
.breadcrumbs a{color:var(--haze)}
.breadcrumbs a:hover{color:var(--cyan)}
.breadcrumbs li+li::before{content:"/";margin-right:8px;color:var(--muted)}

.prose{max-width:76ch;color:#cfe3dd;font-size:16px}
.prose p+p{margin-top:14px}
.prose h2,.prose h3{margin-top:26px;margin-bottom:10px}
.prose ul{list-style:none;display:grid;gap:8px;margin-top:12px}
.prose li{position:relative;padding-left:18px}
.prose li::before{content:"";position:absolute;left:0;top:.7em;width:6px;height:6px;background:var(--cyan);border-radius:1px}

.media-frame{position:relative;overflow:hidden;aspect-ratio:16/9;border:1px solid var(--line);border-radius:var(--radius);background:
  repeating-linear-gradient(115deg,rgba(45,245,208,.14) 0 1px,transparent 1px 26px),
  linear-gradient(135deg,rgba(19,47,54,.92),rgba(6,26,20,.94))}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:4/5}
.media-frame__caption{position:absolute;left:0;right:0;bottom:0;padding:12px 14px;font-family:var(--font-data);font-size:12px;color:var(--haze);background:linear-gradient(0deg,rgba(3,15,11,.92),transparent)}

.tabs{display:flex;flex-wrap:wrap;gap:6px}
.tab{padding:9px 14px;border:1px solid var(--line-strong);border-radius:2px;background:rgba(19,47,54,.5);color:var(--haze);font-size:13px;letter-spacing:.02em;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.tab:hover{color:var(--mist);border-color:rgba(45,245,208,.4)}
.tab[aria-selected="true"]{background:rgba(45,245,208,.14);border-color:var(--cyan);color:var(--cyan)}
.tab-panel{padding-top:16px}
.tab-panel[hidden]{display:none}

[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .52s var(--ease),transform .52s var(--ease)}
[data-reveal].is-visible{opacity:1;transform:none}

/* ===== header ===== */
.site-header{position:relative;z-index:60}
.skip-link{position:fixed;top:8px;left:8px;z-index:200;padding:10px 18px;border-radius:2px;background:var(--cyan);color:#04211A;font-weight:700;font-size:14px;transform:translateY(-180%);transition:transform .2s var(--ease)}
.skip-link:focus-visible{transform:translateY(0)}
.scroll-progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:120;background:linear-gradient(90deg,var(--cyan),var(--orange));transition:width .12s linear}

.frame-top{position:fixed;top:0;left:0;right:0;height:var(--bar);z-index:70;display:flex;align-items:center;gap:14px;padding:0 14px;background:linear-gradient(180deg,#132F36,#0E272D);border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(45,245,208,.16),0 10px 26px rgba(0,0,0,.3)}

.brand{display:flex;align-items:center;gap:10px;min-width:0;flex:0 1 auto}
.brand__mark{position:relative;display:grid;grid-template-columns:repeat(3,3px);gap:3px;align-items:center;justify-items:center;width:24px;height:24px;border:1px solid rgba(45,245,208,.5);border-radius:2px;background:rgba(45,245,208,.08);flex:none}
.brand__mark i{display:block;width:3px;height:9px;border-radius:1px;background:var(--cyan)}
.brand__mark i:nth-child(2){height:14px;opacity:.7}
.brand__mark i:nth-child(3){height:6px;background:var(--orange)}
.brand__text{display:flex;flex-direction:column;min-width:0;line-height:1.18}
.brand__name{font-family:var(--font-display);font-size:15px;font-weight:800;letter-spacing:.01em;color:var(--mist)}
.brand__line{display:none;font-family:var(--font-data);font-size:9.5px;letter-spacing:.14em;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.status-list{display:none;align-items:center;gap:18px;margin-left:auto;font-family:var(--font-data);font-size:11px;letter-spacing:.04em;color:var(--haze)}
.status-item{display:inline-flex;align-items:center;gap:7px;white-space:nowrap}
.status-item__dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 3px rgba(45,245,208,.16);animation:lamp 2.6s var(--ease) infinite}
.status-item__dot--warm{background:var(--orange);box-shadow:0 0 0 3px rgba(255,154,61,.18)}
@keyframes lamp{0%,100%{opacity:1}50%{opacity:.42}}

.nav-toggle{display:inline-flex;align-items:center;gap:9px;margin-left:auto;padding:9px 11px;border:1px solid var(--line-strong);border-radius:2px;background:rgba(11,42,32,.8);color:var(--haze);font-size:12px;letter-spacing:.14em}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{display:grid;gap:3px;width:16px}
.nav-toggle__bars span{display:block;height:2px;border-radius:1px;background:var(--cyan);transition:transform .26s var(--ease),opacity .18s var(--ease)}
.site-header[data-open] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars span:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.nav-toggle__text{white-space:nowrap}

.frame-scrim{position:fixed;top:var(--bar);left:0;right:0;bottom:0;z-index:64;background:rgba(2,12,9,.66);opacity:0;pointer-events:none;transition:opacity .3s var(--ease)}
.site-header[data-open] .frame-scrim{opacity:1;pointer-events:auto}

.rail{position:fixed;top:var(--bar);bottom:0;left:0;z-index:65;display:flex;flex-direction:column;gap:14px;width:min(292px,86vw);padding:18px 16px 22px;overflow-y:auto;background:linear-gradient(180deg,#0B2A20,#061A14 72%);border-right:1px solid var(--line);box-shadow:0 24px 48px rgba(0,0,0,.42);transform:translateX(-102%);transition:transform .34s var(--ease)}
.site-header[data-open] .rail{transform:translateX(0)}
.rail-nav{display:block}
.rail-nav__title{margin:0 0 10px;font-family:var(--font-data);font-size:10px;letter-spacing:.24em;text-transform:uppercase;color:var(--muted)}
.rail-nav__list{display:flex;flex-direction:column;gap:2px}
.rail-nav__link{position:relative;display:flex;align-items:center;gap:12px;padding:11px 12px;border:1px solid transparent;border-left:2px solid transparent;border-radius:2px;color:var(--haze);font-size:15px;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.rail-nav__index{font-family:var(--font-data);font-size:10px;letter-spacing:.1em;color:var(--muted)}
.rail-nav__label{font-weight:600}
.rail-nav__link:hover{background:var(--hover);color:var(--mist);border-color:var(--line)}
.rail-nav__link[aria-current="page"]{background:linear-gradient(90deg,rgba(45,245,208,.16),rgba(45,245,208,.02));border-left-color:var(--cyan);border-color:rgba(45,245,208,.2);color:var(--mist)}
.rail-nav__link[aria-current="page"] .rail-nav__index{color:var(--cyan)}
.rail__cta{width:100%;margin-top:4px}
.rail__panel{margin-top:auto;display:grid;gap:8px;padding:12px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(19,47,54,.55)}
.rail-panel__row{display:flex;align-items:baseline;justify-content:space-between;gap:10px;font-family:var(--font-data);font-size:11.5px;letter-spacing:.02em;line-height:1.5}
.rail-panel__key{color:var(--muted)}
.rail-panel__val{color:var(--mist)}
.rail-panel__val--warm{color:var(--orange)}

/* ===== footer ===== */
.site-footer{margin-top:clamp(44px,7vw,92px);background:linear-gradient(180deg,#061A14,#0B2A20 42%,#061A14);border-top:1px solid var(--line)}
.footer-main{display:grid;gap:clamp(24px,4vw,40px);width:min(100% - 36px,var(--wrap));margin-inline:auto;padding:clamp(30px,5vw,54px) 0 clamp(22px,3vw,32px)}
.footer-brand{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.brand--footer .brand__name{font-size:17px}
.brand--footer .brand__line{display:block}
.footer-desc{max-width:44ch;font-size:14px;color:var(--haze)}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}
.footer-cols{display:grid;gap:clamp(20px,3vw,30px);grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}
.footer-col{display:block}
.footer-col__title{margin:0 0 12px;padding-left:10px;position:relative;font-family:var(--font-data);font-size:11px;letter-spacing:.2em;text-transform:uppercase;font-weight:600;color:var(--cyan)}
.footer-col__title::before{content:"";position:absolute;left:0;top:.45em;width:4px;height:4px;background:var(--orange);border-radius:1px}
.footer-list{display:grid;gap:9px}
.footer-link{display:inline-block;font-size:14px;color:var(--haze);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.footer-link:hover{color:var(--cyan);border-bottom-color:rgba(45,245,208,.5)}
.footer-contact{width:min(100% - 36px,var(--wrap));margin-inline:auto;padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:grid;gap:8px}
.footer-contact__line{font-family:var(--font-data);font-size:12.5px;letter-spacing:.01em;color:var(--haze);line-height:1.8}
.footer-note{font-size:12.5px;color:var(--muted);line-height:1.75}
.footer-base{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;width:min(100% - 36px,var(--wrap));margin-inline:auto;padding:16px 0 24px}
.footer-legal{margin:0;font-family:var(--font-data);font-size:11.5px;letter-spacing:.04em;color:var(--muted)}
.footer-base__links{display:flex;align-items:center;gap:10px;margin-left:auto;font-size:12px;color:var(--muted)}

@media (min-width:480px){
  .nav-toggle__text{display:inline}
}
@media (min-width:768px){
  .status-list{display:flex}
  .nav-toggle{margin-left:0}
  .brand__line{display:block}
  .footer-base__links{margin-left:auto}
}
@media (min-width:1024px){
  body{padding-top:var(--strip);padding-left:var(--rail)}
  .frame-top{height:var(--strip);gap:22px;padding:0 22px}
  .nav-toggle{display:none}
  .frame-scrim{display:none}
  .rail{top:var(--strip);width:var(--rail);padding:24px 16px 20px;transform:none;box-shadow:none;transition:none;z-index:50}
  .rail-nav__link{padding:10px 11px;font-size:14px}
  .skip-link{left:calc(var(--rail) + 10px)}
  .footer-main{grid-template-columns:1.05fr 1.95fr;align-items:start}
  .footer-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-brand{padding-right:clamp(16px,3vw,40px);border-right:1px solid var(--line)}
}
@media (min-width:1280px){
  .frame-top{padding:0 26px}
  .rail{padding:28px 18px 22px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  [data-reveal]{opacity:1;transform:none}
  .rail{transform:none}
  .site-header[data-open] .rail{transform:none}
  .scroll-progress{transition:none}
}