*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 20px)}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
input{font:inherit;color:inherit}
img,svg,picture,video{display:block;max-width:100%}

:root{
  --ink:#05100D;
  --board:#0B1F1A;
  --card:#12332B;
  --cyan:#00F2C3;
  --cyan-soft:#7BFFE0;
  --orange:#FF8A2B;
  --orange-soft:#FFC46B;
  --text:#E8F5F0;
  --muted:#8FA9A1;
  --line:#1E4A3F;
  --line-soft:rgba(30,74,63,.55);
  --glass:rgba(10,40,34,.55);
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;
  --header-h:66px;
  --rail-w:208px;
  --pad:16px;
  --gap:16px;
  --radius:2px;
  --shell-max:1240px;
}
@media (min-width:640px){:root{--header-h:76px;--pad:24px;--gap:20px}}
@media (min-width:1024px){:root{--pad:32px}}

body{
  min-height:100vh;
  padding-top:var(--header-h);
  background-color:var(--ink);
  background-image:
    repeating-linear-gradient(0deg,rgba(30,74,63,.30) 0 1px,transparent 1px 24px),
    repeating-linear-gradient(90deg,rgba(30,74,63,.30) 0 1px,transparent 1px 24px),
    radial-gradient(120% 80% at 84% -10%,rgba(0,242,195,.10),transparent 62%),
    radial-gradient(90% 70% at 0% 100%,rgba(255,138,43,.07),transparent 66%),
    linear-gradient(180deg,#071814 0%,#05100D 55%,#05100D 100%);
  color:var(--text);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
@media (min-width:1024px){body{padding-left:var(--rail-w)}}

h1,h2,h3,h4{font-weight:900;line-height:1.2;letter-spacing:-.02em;color:var(--text)}
h1{font-size:clamp(34px,5vw,64px)}
h2{font-size:clamp(24px,3vw,30px)}
h3{font-size:20px;letter-spacing:-.01em}

:focus-visible{outline:2px solid var(--cyan-soft);outline-offset:3px}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--cyan-soft);outline-offset:3px}

.mono,.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

.container{width:100%;max-width:var(--shell-max);margin-inline:auto;padding-inline:var(--pad)}
.stack>*+*{margin-top:var(--gap)}
.grid{display:grid;gap:var(--gap);grid-template-columns:repeat(12,minmax(0,1fr));align-items:start}

.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--cyan)}

.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 9px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(18,51,43,.7);font-size:11px;letter-spacing:.06em;line-height:1.6;color:var(--muted)}
.tag--cyan{color:#04120E;background:var(--cyan);border-color:var(--cyan);font-weight:800}
.tag--warm{color:#1A0D02;background:var(--orange);border-color:var(--orange);font-weight:800}
.tag--outline{color:var(--cyan);border-color:rgba(0,242,195,.5);background:rgba(0,242,195,.08)}

.card{position:relative;padding:20px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius)}

.media-frame{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);
  aspect-ratio:16/10;
  background-image:
    repeating-linear-gradient(0deg,rgba(30,74,63,.5) 0 1px,transparent 1px 32px),
    repeating-linear-gradient(90deg,rgba(30,74,63,.5) 0 1px,transparent 1px 32px),
    linear-gradient(160deg,#12332B,#081915);
}
.media-frame::after{content:"";position:absolute;inset:10px;border:1px dashed rgba(0,242,195,.18);pointer-events:none}
.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--square{aspect-ratio:1/1}
.media-frame__caption{position:absolute;left:0;bottom:0;z-index:2;padding:6px 10px;background:rgba(5,16,13,.82);font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--muted)}

.prose{max-width:46em}
.prose p{max-width:46em;margin-bottom:1.1em;color:#D3E7E0}
.prose h2{margin:1.8em 0 .6em}
.prose h3{margin:1.4em 0 .5em}
.prose ul{margin:0 0 1.2em}
.prose li{position:relative;padding-left:18px;margin-bottom:.5em;color:#D3E7E0}
.prose li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--cyan);transform:rotate(45deg)}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(0,242,195,.4)}
.prose a:hover{color:var(--cyan-soft);border-bottom-color:var(--cyan-soft)}

.breadcrumbs{padding-block:14px}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--muted)}
.breadcrumb-item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb-item+.breadcrumb-item::before{content:"/";color:rgba(143,169,161,.5)}
.breadcrumb-link{color:var(--muted);transition:color .16s ease}
.breadcrumb-link:hover{color:var(--cyan-soft)}
.breadcrumb-item[aria-current="page"]{color:var(--cyan)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:9px 15px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--card);color:var(--text);
  font-size:13px;font-weight:700;letter-spacing:.04em;line-height:1.4;white-space:nowrap;
  transition:background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn:hover{border-color:var(--cyan);color:var(--cyan-soft)}
.btn--accent{background:var(--orange);border-color:var(--orange);color:#1A0D02;font-weight:800}
.btn--accent:hover{background:var(--orange-soft);border-color:var(--orange-soft);color:#05100D;box-shadow:0 0 0 3px rgba(255,138,43,.18)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--muted)}
.btn--ghost:hover{background:rgba(0,242,195,.08);border-color:rgba(0,242,195,.55);color:var(--cyan-soft)}

.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:10px 16px;border-radius:var(--radius);
  background:var(--cyan);color:#04120E;
  font-size:13px;font-weight:800;letter-spacing:.06em;
  transform:translateY(-220%);transition:transform .18s ease;
}
.skip-link:focus{transform:translateY(0)}

.site-header{position:fixed;top:0;left:0;right:0;z-index:60}
.header-bar{
  position:relative;z-index:3;
  display:flex;align-items:center;gap:10px;
  height:var(--header-h);padding:0 var(--pad);
  background:var(--glass);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  backdrop-filter:blur(14px) saturate(150%);
  box-shadow:0 1px 0 rgba(0,242,195,.08),0 18px 40px rgba(0,0,0,.35);
}

.brand{display:flex;align-items:center;gap:10px;min-width:0;flex:0 0 auto}
.brand-mark{
  position:relative;display:grid;place-items:center;flex:0 0 auto;
  width:38px;height:38px;border:1px solid var(--cyan);border-radius:var(--radius);
  background:linear-gradient(155deg,rgba(0,242,195,.18),rgba(0,242,195,0) 65%);
  box-shadow:0 0 16px rgba(0,242,195,.16);
}
.brand-mark__tick{position:absolute;inset:4px;border-top:1px solid rgba(0,242,195,.45);border-left:1px solid rgba(0,242,195,.45)}
.brand-mark__digit{position:relative;font-family:var(--font-mono);font-size:14px;font-weight:700;letter-spacing:-.02em;color:var(--cyan)}
.brand-mark::after{content:"";position:absolute;right:-3px;bottom:-3px;width:6px;height:6px;border-radius:50%;background:var(--orange);box-shadow:0 0 10px rgba(255,138,43,.8)}
.brand-text{display:flex;flex-direction:column;min-width:0;line-height:1.12}
.brand-text__name{font-size:15px;font-weight:900;letter-spacing:-.01em;color:var(--text);white-space:nowrap}
.brand-text__tag{font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;color:var(--muted);white-space:nowrap}

.header-utility{margin-left:auto;display:flex;align-items:center;gap:8px;min-width:0}
.clock-list{display:none;gap:6px;font-family:var(--font-mono);font-size:11px}
.clock-item{display:inline-flex;align-items:center;gap:5px;padding:4px 8px;border:1px solid var(--line);border-radius:var(--radius);color:var(--muted);letter-spacing:.04em}
.clock-dot{width:5px;height:5px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan)}
.clock-dot--warm{background:var(--orange);box-shadow:0 0 8px rgba(255,138,43,.9)}
.header-utility .btn--accent,.header-utility .btn--ghost{display:none}

.index-toggle{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 11px;border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(18,51,43,.55);color:var(--muted);
  font-size:12px;letter-spacing:.06em;white-space:nowrap;
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.index-toggle::before{content:"";width:7px;height:7px;border:1px solid var(--cyan);border-radius:1px}
.index-toggle:hover{color:var(--cyan-soft);border-color:var(--cyan)}
.index-toggle[aria-expanded="true"]{background:var(--cyan);border-color:var(--cyan);color:#04120E;font-weight:800}

.nav-toggle{
  display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;
  padding:8px 10px;border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(18,51,43,.65);color:var(--text);
  font-size:12px;letter-spacing:.08em;
  transition:border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan-soft)}
.nav-toggle__bars{display:grid;gap:3px;width:15px}
.nav-toggle__bars span{display:block;height:2px;background:var(--cyan);transition:transform .2s ease,opacity .2s 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__label{white-space:nowrap}

.site-nav{
  position:fixed;inset:0;z-index:2;
  display:flex;flex-direction:column;gap:6px;
  padding:calc(var(--header-h) + 18px) var(--pad) 40px;
  background:linear-gradient(180deg,rgba(7,24,20,.985),rgba(5,16,13,.995));
  overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.site-header[data-open] .site-nav{opacity:1;visibility:visible;transform:none}

.nav-heading{margin-bottom:8px;padding:0 12px 10px;border-bottom:1px solid var(--line);font-family:var(--font-mono);font-size:10px;letter-spacing:.24em;text-transform:uppercase;color:rgba(143,169,161,.85)}
.nav-list{display:flex;flex-direction:column;gap:2px}
.nav-item{position:relative}
.nav-link{
  display:flex;align-items:center;gap:10px;
  padding:11px 10px 11px 12px;
  border-left:2px solid transparent;
  color:var(--muted);font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:color .18s ease,background .18s ease,border-color .18s ease;
}
.nav-link__idx{font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:rgba(143,169,161,.7)}
.nav-link:hover{color:var(--cyan-soft);background:rgba(0,242,195,.07);border-left-color:rgba(0,242,195,.55)}
.nav-link[aria-current="page"]{color:var(--cyan);border-left-color:var(--cyan);background:linear-gradient(90deg,rgba(0,242,195,.15),rgba(0,242,195,0))}
.nav-link[aria-current="page"] .nav-link__idx{color:var(--orange)}
.nav-link[aria-current="page"]::after{content:"";margin-left:auto;width:6px;height:6px;border-radius:50%;background:var(--orange);box-shadow:0 0 10px rgba(255,138,43,.9)}
.nav-extra{display:flex;flex-direction:column;gap:10px;margin-top:18px;padding-top:18px;border-top:1px dashed var(--line)}
.nav-note{display:none}

.index-panel{
  position:absolute;top:calc(100% + 1px);left:0;right:0;z-index:4;
  max-height:calc(100vh - var(--header-h) - 16px);overflow-y:auto;
  padding:16px var(--pad) 20px;
  background:rgba(9,28,23,.99);
  border-top:1px solid rgba(0,242,195,.3);
  border-bottom:1px solid var(--line);
  box-shadow:0 26px 48px rgba(0,0,0,.55);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.index-panel[hidden]{display:none}
.index-panel__head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:4px 12px;margin-bottom:10px}
.index-label{font-size:12px;letter-spacing:.08em;color:var(--text)}
.index-hint{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--muted)}
.index-input{
  width:100%;padding:11px 12px;
  background:rgba(5,16,13,.85);border:1px solid var(--line);border-radius:var(--radius);
  color:var(--text);font-size:14px;letter-spacing:.02em;
}
.index-input::placeholder{color:rgba(143,169,161,.75)}
.index-input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(0,242,195,.15);outline:none}
.index-list{display:grid;gap:6px;margin-top:12px;grid-template-columns:1fr}
.index-item[hidden]{display:none}
.index-link{
  display:grid;gap:1px;
  padding:9px 10px;border:1px solid transparent;border-left:2px solid var(--line);border-radius:var(--radius);
  background:rgba(18,51,43,.6);
  transition:border-color .18s ease,background .18s ease;
}
.index-link:hover,.index-link:focus-visible{border-left-color:var(--cyan);background:rgba(18,51,43,.95)}
.index-link__name{font-size:14px;font-weight:700;color:var(--text)}
.index-link__meta{font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--muted)}
.index-empty{margin-top:12px;font-size:13px;color:var(--orange-soft)}
.index-empty[hidden]{display:none}

.site-footer{
  position:relative;margin-top:72px;overflow:hidden;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,31,26,.9),rgba(4,12,10,1));
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:repeating-linear-gradient(90deg,rgba(30,74,63,.5) 0 1px,transparent 1px 96px);
}
.site-footer::after{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;opacity:.8;
  background:linear-gradient(90deg,var(--cyan),rgba(0,242,195,0) 38%,var(--orange));
}
.footer-grid{
  position:relative;display:grid;gap:32px;
  max-width:var(--shell-max);margin-inline:auto;
  padding:52px var(--pad) 36px;
  grid-template-columns:1fr;
}
.footer-brand .brand{margin-bottom:14px}
.footer-brand__line{max-width:34em;font-size:14px;line-height:1.7;color:var(--muted)}
.footer-brand__meta{margin-top:12px;font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:rgba(143,169,161,.85)}
.footer-brand__meta .mono{color:var(--cyan)}
.footer-col__title{
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:11px;font-weight:800;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan);
}
.footer-col__title::before{content:"";width:10px;height:1px;background:var(--orange)}
.footer-links{display:grid;gap:2px}
.footer-link{
  display:inline-block;padding:4px 0;font-size:14px;color:var(--muted);
  border-bottom:1px solid transparent;
  transition:color .16s ease,border-color .16s ease;
}
.footer-link:hover{color:var(--cyan-soft);border-bottom-color:rgba(0,242,195,.45)}
.footer-link--sm{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em}
.footer-col--contact{min-width:0}
.contact-row{display:grid;grid-template-columns:auto 1fr;gap:10px;padding:7px 0;border-bottom:1px dashed rgba(30,74,63,.85)}
.contact-row__key{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:rgba(143,169,161,.9)}
.contact-row__val{font-family:var(--font-mono);font-size:13px;color:var(--text);word-break:break-all;line-height:1.6}
.contact-row__val--text{font-family:var(--font-body);font-size:13px;color:#CFE4DD;letter-spacing:.01em}
.footer-bottom{
  position:relative;
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;
  max-width:var(--shell-max);margin-inline:auto;
  padding:18px var(--pad) 34px;
  border-top:1px solid var(--line);
  font-size:12px;color:rgba(143,169,161,.9);
}
.footer-note{font-size:12px}
.footer-legal{font-family:var(--font-mono);letter-spacing:.06em;color:var(--muted)}
.footer-legal-links{display:flex;flex-wrap:wrap;gap:16px}

.scroll-progress{
  position:fixed;top:0;left:0;z-index:120;height:2px;width:0;
  background:linear-gradient(90deg,var(--cyan),var(--cyan-soft));
  box-shadow:0 0 12px rgba(0,242,195,.6);
  pointer-events:none;
}
.to-top{
  position:fixed;right:16px;bottom:16px;z-index:70;
  display:grid;place-items:center;width:44px;height:44px;
  border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(11,31,26,.92);color:var(--cyan);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity .2s ease,transform .2s ease,border-color .2s ease,color .2s ease;
}
.to-top[data-visible]{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{border-color:var(--cyan);color:var(--cyan-soft)}
.to-top__arrow{display:block;width:9px;height:9px;border-top:2px solid currentColor;border-left:2px solid currentColor;transform:rotate(45deg) translate(1px,1px)}

@media (min-width:640px){
  .clock-list{display:flex}
  .header-utility .btn--accent{display:inline-flex}
  .index-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}
@media (min-width:900px){
  .header-utility .btn--ghost{display:inline-flex}
}
@media (min-width:1024px){
  .nav-toggle{display:none}
  .site-nav{
    position:fixed;top:var(--header-h);bottom:0;left:0;right:auto;
    width:var(--rail-w);
    padding:20px 14px 24px;
    background:linear-gradient(180deg,rgba(11,31,26,.97) 0%,rgba(6,20,16,.995) 100%);
    border-right:1px solid var(--line);
    opacity:1;visibility:visible;transform:none;
    transition:none;
    -webkit-backdrop-filter:none;backdrop-filter:none;
  }
  .site-header[data-open] .site-nav{opacity:1;visibility:visible;transform:none}
  .nav-heading{margin-bottom:10px}
  .nav-note{
    display:block;margin-top:auto;padding-top:18px;border-top:1px solid var(--line);
    align-self:flex-start;
    font-family:var(--font-mono);font-size:10px;letter-spacing:.22em;
    color:rgba(143,169,161,.55);writing-mode:vertical-rl;transform:rotate(180deg);
  }
  .index-panel{
    left:var(--rail-w);right:auto;
    width:min(660px,calc(100vw - var(--rail-w) - 48px));
    max-height:calc(100vh - var(--header-h) - 24px);
    padding:18px 20px 22px;
    border:1px solid var(--line);border-top-color:rgba(0,242,195,.35);
    border-radius:0 0 var(--radius) var(--radius);
  }
  .footer-grid{grid-template-columns:1.5fr .8fr .8fr .8fr 1.2fr;gap:32px;padding-top:60px;padding-bottom:44px}
  .footer-brand{grid-column:auto}
  .footer-legal-links{margin-left:auto}
  .to-top{right:24px;bottom:24px}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}