:root{
  --space:#0B1224;
  --night:#1B1236;
  --indigo:#101C3A;
  --line:#2E4470;
  --mist:#A8B6CF;
  --cream:#F2E7D5;
  --ink:#1A120C;
  --cyan:#4FE3D0;
  --orange:#FF8A3D;
  --red:#D6482F;
  --edge:rgba(46,68,112,.6);
  --rail:0px;
  --dur:180ms;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"IBM Plex Mono","SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
@media (min-width:1180px){:root{--rail:96px;}}

*,*::before,*::after{box-sizing:border-box}
html{background:var(--space);-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-left:var(--rail);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--mist);
  background-color:var(--space);
  background-image:
    radial-gradient(60% 40% at 12% 4%, rgba(79,227,208,.08), rgba(79,227,208,0) 70%),
    radial-gradient(52% 36% at 92% 2%, rgba(255,138,61,.07), rgba(255,138,61,0) 70%),
    radial-gradient(80% 50% at 50% 108%, rgba(27,18,54,.95), rgba(11,18,36,0) 72%),
    linear-gradient(to bottom, rgba(46,68,112,.09) 1px, rgba(0,0,0,0) 1px),
    linear-gradient(to right, rgba(46,68,112,.09) 1px, rgba(0,0,0,0) 1px);
  background-size:auto,auto,auto,100% 84px,84px 100%;
  background-repeat:no-repeat,no-repeat,no-repeat,repeat,repeat;
  min-height:100vh;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  opacity:.5;
  background-image:
    radial-gradient(1.2px 1.2px at 20px 30px, rgba(168,182,207,.6), rgba(0,0,0,0) 60%),
    radial-gradient(1px 1px at 140px 96px, rgba(79,227,208,.5), rgba(0,0,0,0) 60%),
    radial-gradient(1.4px 1.4px at 258px 202px, rgba(242,231,213,.45), rgba(0,0,0,0) 60%),
    radial-gradient(1px 1px at 84px 262px, rgba(168,182,207,.4), rgba(0,0,0,0) 60%);
  background-size:340px 320px;
  animation:star-drift 90s linear infinite;
}
@keyframes star-drift{
  from{background-position:0 0}
  to{background-position:-340px 320px}
}

img,svg,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
[hidden]{display:none !important}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

#main-content,main{position:relative;z-index:1;display:block}

.wrap{width:min(1200px,100% - 40px);margin-inline:auto}
.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}

/* ---------- shared typography & blocks ---------- */
.display-xl{margin:0;font-weight:200;font-size:clamp(34px,6.4vw,84px);line-height:1.03;letter-spacing:.02em;color:var(--cream)}
.display-l{margin:0;font-weight:200;font-size:clamp(26px,3.6vw,46px);line-height:1.14;letter-spacing:.02em;color:var(--cream)}
.section-title{margin:0;font-size:clamp(19px,2.2vw,26px);font-weight:700;letter-spacing:.08em;color:var(--cream)}
.section-head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin:0 0 22px}
.eyebrow{margin:0;font:400 11px/1.6 var(--font-mono);letter-spacing:.24em;text-transform:uppercase;color:var(--cyan)}
.index-tag{display:inline-flex;align-items:center;gap:6px;font:400 11px/1 var(--font-mono);letter-spacing:.1em;color:var(--red);border:1px solid rgba(214,72,47,.5);background:rgba(214,72,47,.08);padding:5px 8px}
.data-num{font-family:var(--font-mono);letter-spacing:.02em;font-variant-numeric:tabular-nums;color:var(--cyan)}
.prose{max-width:68ch}
.prose p{margin:0 0 1.1em}
.prose p:last-child{margin-bottom:0}
.rule-line{height:1px;border:0;margin:clamp(28px,4vw,52px) 0;background:linear-gradient(90deg, rgba(79,227,208,.6), rgba(46,68,112,.15) 60%, rgba(0,0,0,0))}
.breadcrumbs{margin:0 0 18px;font:400 12px/1.6 var(--font-mono);color:rgba(168,182,207,.62)}
.breadcrumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumbs li+li::before{content:"/";margin-right:8px;color:rgba(46,68,112,1)}
.breadcrumbs a{color:rgba(168,182,207,.82);border-bottom:1px solid transparent;transition:color var(--dur) ease,border-color var(--dur) ease}
.breadcrumbs a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2vw,28px)}
.col-3{grid-column:span 3}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-9{grid-column:span 9}
.col-12{grid-column:span 12}

.panel{
  position:relative;
  background:var(--indigo);
  border:1px solid var(--edge);
  padding:clamp(18px,2.4vw,28px);
  clip-path:polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
  transition:transform var(--dur) ease,border-color var(--dur) ease,box-shadow var(--dur) ease;
}
.panel:hover,.panel:focus-within{transform:translateY(-4px);border-color:rgba(79,227,208,.85);box-shadow:0 18px 40px -30px rgba(79,227,208,.8)}
.panel--cream{
  background:var(--cream);
  color:var(--ink);
  border-color:rgba(26,18,12,.2);
}
.panel--cream .section-title,.panel--cream h3,.panel--cream h2{color:var(--ink)}

.media-frame{
  position:relative;
  overflow:hidden;
  background:
    linear-gradient(140deg, rgba(27,18,54,.95), rgba(16,28,58,.9)),
    linear-gradient(to bottom, rgba(46,68,112,.35) 1px, rgba(0,0,0,0) 1px),
    linear-gradient(to right, rgba(46,68,112,.35) 1px, rgba(0,0,0,0) 1px);
  background-size:auto,44px 44px,44px 44px;
  border:1px solid var(--edge);
  clip-path:polygon(0 22px, 22px 0, 100% 0, 100% 100%, 0 100%);
}
.media-frame__img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/9}
.media-frame--wide .media-frame__img{aspect-ratio:21/9}
.media-frame--square .media-frame__img{aspect-ratio:1/1}
.media-frame__cap{
  position:absolute;left:0;bottom:0;
  padding:6px 12px;
  background:rgba(11,18,36,.88);
  color:var(--mist);
  font:400 11px/1.6 var(--font-mono);
  letter-spacing:.06em;
  border-top:1px solid rgba(46,68,112,.8);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;
  font-family:var(--font-body);
  font-size:14px;font-weight:600;letter-spacing:.04em;
  border:1px solid transparent;
  border-radius:0;
  white-space:nowrap;
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
  transition:background-color var(--dur) ease,border-color var(--dur) ease,color var(--dur) ease;
}
.btn:focus-visible{outline:none;box-shadow:inset 0 0 0 2px var(--cyan)}
.btn--primary{background:var(--orange);color:var(--ink)}
.btn--primary:hover{background:#FFA360}
.btn--ghost{border-color:rgba(168,182,207,.42);color:var(--mist)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--quiet{border-color:rgba(46,68,112,.9);color:rgba(168,182,207,.85);background:rgba(16,28,58,.7)}
.btn--quiet:hover{border-color:var(--cyan);color:var(--cyan)}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;left:12px;top:-64px;z-index:300;
  background:var(--cream);color:var(--ink);
  padding:10px 16px;font-size:14px;font-weight:600;
  transition:top var(--dur) ease;
}
.skip-link:focus{top:12px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--space);
  border-bottom:1px solid var(--edge);
}
.brandbar{
  border-bottom:1px solid rgba(46,68,112,.5);
  background:
    linear-gradient(180deg, rgba(27,18,54,.75), rgba(11,18,36,.62)),
    repeating-linear-gradient(90deg, rgba(46,68,112,.28) 0 1px, rgba(0,0,0,0) 1px 96px);
}
.brandbar__inner{
  display:flex;align-items:center;flex-wrap:wrap;
  gap:clamp(14px,2.4vw,34px);
  min-height:72px;
  padding-block:12px;
}
.brandmark{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brandmark__sigil{
  position:relative;width:26px;height:26px;flex:0 0 auto;
  border:1px solid var(--cyan);
  background:linear-gradient(135deg, rgba(79,227,208,.24), rgba(255,138,61,0) 62%);
}
.brandmark__sigil::after{
  content:"";position:absolute;left:50%;top:50%;width:14px;height:1px;
  background:var(--orange);
  transform:translate(-50%,-50%) rotate(-45deg);
  box-shadow:0 -5px 0 var(--cyan),0 5px 0 var(--cyan);
}
.brandmark__text{display:flex;flex-direction:column;line-height:1.2}
.brandmark__name{font-size:17px;font-weight:700;letter-spacing:.1em;color:var(--cream)}
.brandmark__sub{font-size:11px;letter-spacing:.14em;color:rgba(168,182,207,.7)}
.brandbar__value{
  flex:1 1 260px;max-width:46ch;margin:0;
  padding-left:16px;
  border-left:1px solid rgba(46,68,112,.75);
  font-size:13px;line-height:1.6;color:rgba(168,182,207,.8);
}
.brandbar__actions{display:flex;gap:10px;flex:0 0 auto;margin-left:auto}

.navband{background:rgba(16,28,58,.9);border-bottom:1px solid var(--edge)}
.navband__inner{display:flex;align-items:center;flex-wrap:wrap;gap:16px;min-height:52px}
.navtoggle{
  display:none;align-items:center;gap:10px;
  padding:10px 14px;
  border:1px solid rgba(46,68,112,.85);
  background:rgba(11,18,36,.6);
  color:var(--cream);font-size:13px;font-weight:600;letter-spacing:.08em;
  transition:border-color var(--dur) ease,color var(--dur) ease;
}
.navtoggle:hover{border-color:var(--cyan);color:var(--cyan)}
.navtoggle__bars{position:relative;display:block;width:16px;height:10px}
.navtoggle__bars::before,.navtoggle__bars::after{
  content:"";position:absolute;left:0;width:16px;height:1px;background:var(--cyan);
  transition:transform var(--dur) ease;
}
.navtoggle__bars::before{top:0}
.navtoggle__bars::after{bottom:0}
[data-nav-toggle][aria-expanded="true"] .navtoggle__bars::before{transform:translateY(4.5px) rotate(45deg)}
[data-nav-toggle][aria-expanded="true"] .navtoggle__bars::after{transform:translateY(-4.5px) rotate(-45deg)}
.navband__nav{display:block;flex:1 1 auto;min-width:0}
.navlist{display:flex;align-items:stretch;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:thin}
.navlist__item{flex:0 0 auto}
.navlist__link{
  display:flex;align-items:center;gap:8px;
  padding:15px 16px;
  font-size:14px;font-weight:600;letter-spacing:.05em;
  color:rgba(168,182,207,.86);
  border-bottom:2px solid transparent;
  transition:color var(--dur) ease,border-color var(--dur) ease,background-color var(--dur) ease;
}
.navlist__idx{font:400 10px/1 var(--font-mono);letter-spacing:.06em;color:var(--red)}
.navlist__label{white-space:nowrap}
.navlist__link:hover{color:var(--cream);background:rgba(79,227,208,.06);border-bottom-color:rgba(79,227,208,.55)}
.navlist__link:hover .navlist__idx{color:var(--cyan)}
.navlist__link[aria-current="page"]{
  color:var(--cyan);
  border-bottom-color:var(--cyan);
  background:rgba(79,227,208,.07);
}
.navlist__link[aria-current="page"] .navlist__idx{color:var(--cyan)}
.navband__meta{
  flex:0 0 auto;margin:0;padding-left:14px;
  border-left:1px solid rgba(46,68,112,.75);
  font:400 11px/1.6 var(--font-mono);letter-spacing:.1em;color:rgba(168,182,207,.62);
}

/* ---------- star rail ---------- */
.starrail{display:none}
@media (min-width:1180px){
  .starrail{
    position:fixed;left:0;top:0;bottom:0;width:var(--rail);
    display:flex;flex-direction:column;justify-content:center;gap:16px;
    padding:88px 0 26px;
    background:linear-gradient(180deg, rgba(27,18,54,.62), rgba(11,18,36,.94) 55%, rgba(11,18,36,.99));
    border-right:1px solid rgba(46,68,112,.5);
    z-index:70;
  }
  .starrail__track{position:absolute;right:-1px;top:0;bottom:0;width:1px;background:rgba(46,68,112,.5)}
  .starrail__progress{display:block;width:1px;height:0;background:var(--cyan);box-shadow:0 0 10px rgba(79,227,208,.85)}
}
.starrail__cap{margin:0;text-align:center;font:400 10px/1 var(--font-mono);letter-spacing:.3em;color:var(--red)}
.starrail__list{display:flex;flex-direction:column;align-items:center;gap:12px}
.starrail__link{
  display:flex;flex-direction:column;align-items:center;gap:6px;
  padding:6px 4px;
  color:rgba(168,182,207,.8);
  transition:color var(--dur) ease;
}
.starrail__num{font:400 10px/1 var(--font-mono);letter-spacing:.04em;color:rgba(168,182,207,.5)}
.starrail__glyph{writing-mode:vertical-rl;text-orientation:mixed;font-size:11px;line-height:1;letter-spacing:.2em}
.starrail__link:hover{color:var(--cream)}
.starrail__link:hover .starrail__num{color:var(--cyan)}
.starrail__link[aria-current="page"]{color:var(--cyan)}
.starrail__link[aria-current="page"] .starrail__num{color:var(--cyan)}
.starrail__link[aria-current="page"] .starrail__glyph{text-shadow:0 0 12px rgba(79,227,208,.5)}

/* ---------- footer ---------- */
.site-footer{
  position:relative;z-index:1;
  margin-top:clamp(48px,8vw,110px);
  border-top:1px solid var(--edge);
  background:linear-gradient(180deg, rgba(16,28,58,.94), rgba(11,18,36,1));
}
.footer__rule{
  height:12px;
  background-image:repeating-linear-gradient(90deg, rgba(46,68,112,.95) 0 1px, rgba(0,0,0,0) 1px 22px);
  background-size:100% 7px;
  background-repeat:repeat-x;
  background-position:left top;
  border-bottom:1px solid rgba(46,68,112,.35);
}
.footer__grid{
  display:grid;
  grid-template-columns:1.4fr 2.6fr;
  gap:clamp(24px,3vw,56px);
  padding-block:clamp(32px,5vw,60px);
}
.footer__brand{min-width:0}
.footer__mark{margin:0;font-size:22px;font-weight:700;letter-spacing:.14em;color:var(--cream)}
.footer__tagline{margin:6px 0 0;font-size:12px;letter-spacing:.14em;color:rgba(168,182,207,.7)}
.footer__contact{margin:18px 0 0;font:400 13px/1.8 var(--font-mono);color:var(--mist);word-break:break-all}
.footer__address{margin:6px 0 0;max-width:34ch;font-size:13px;line-height:1.7;color:rgba(168,182,207,.72)}
.footer__cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2vw,32px)}
.footer__col{min-width:0}
.footer__coltitle{
  position:relative;
  margin:0 0 14px;padding-bottom:10px;
  font-size:12px;font-weight:700;letter-spacing:.22em;color:var(--cream);
  border-bottom:1px solid rgba(46,68,112,.6);
}
.footer__coltitle::after{content:"";position:absolute;left:0;bottom:-1px;width:28px;height:1px;background:var(--orange)}
.footer__list{display:flex;flex-direction:column;gap:10px}
.footer__item{min-width:0}
.footer__link{
  display:inline-block;
  font-size:14px;line-height:1.6;
  color:rgba(168,182,207,.82);
  border-bottom:1px solid transparent;
  transition:color var(--dur) ease,border-color var(--dur) ease;
}
.footer__link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.footer__base{
  display:flex;flex-wrap:wrap;align-items:center;
  gap:12px 24px;
  padding-block:20px 28px;
  border-top:1px solid rgba(46,68,112,.45);
}
.footer__legal{margin:0;font:400 12px/1.6 var(--font-mono);letter-spacing:.06em;color:rgba(168,182,207,.72)}
.footer__note{flex:1 1 320px;margin:0;font-size:12px;line-height:1.7;color:rgba(168,182,207,.6)}
.footer__year{margin:0;font:400 12px/1.6 var(--font-mono);color:rgba(168,182,207,.6)}
.jumptop{
  padding:8px 14px;
  border:1px solid rgba(46,68,112,.9);
  background:rgba(16,28,58,.8);
  color:var(--mist);
  font-size:12px;letter-spacing:.1em;
  transition:border-color var(--dur) ease,color var(--dur) ease;
}
.jumptop:hover{border-color:var(--cyan);color:var(--cyan)}

/* ---------- reveal ---------- */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .col-3,.col-4,.col-5{grid-column:span 6}
  .footer__grid{grid-template-columns:1fr;gap:clamp(24px,4vw,40px)}
}
@media (max-width:900px){
  .navtoggle{display:inline-flex}
  .navband__nav{display:none;flex:1 0 100%;order:3}
  .navband__nav[data-open]{display:block;margin-top:8px;padding-top:8px;border-top:1px solid rgba(46,68,112,.6)}
  .navlist{flex-direction:column;overflow:visible}
  .navlist__link{padding:13px 6px;font-size:15px;border-bottom:1px solid rgba(46,68,112,.35)}
  .navlist__item:last-child .navlist__link{border-bottom:0}
  .navband__meta{margin-left:auto;border-left:0;padding-left:0}
  .brandbar__value{flex-basis:100%;max-width:none;padding-left:0;padding-top:12px;border-left:0;border-top:1px dashed rgba(46,68,112,.7)}
  .brandbar__actions{margin-left:0;flex-wrap:wrap}
}
@media (max-width:760px){
  .footer__cols{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9{grid-column:1/-1}
  .wrap{width:calc(100% - 32px)}
  .brandbar__inner{min-height:0}
  .btn{padding:9px 14px;font-size:13px}
}
@media (max-width:520px){
  .footer__cols{grid-template-columns:1fr}
  .footer__grid{padding-block:32px 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}
  body::before{animation:none}
  .panel:hover,.panel:focus-within{transform:none}
  [data-reveal]{opacity:1;transform:none}
}