:root{
  --ink:#0B1B2B;
  --hull:#13293F;
  --deep:#07141F;
  --rail-bg:#0A1A29;
  --paper:#F2F7FB;
  --paper-dim:#C6D6E4;
  --mist:#8FA6BC;
  --cyan:#22E0D6;
  --orange:#FF6A2B;
  --amber:#F5B83D;
  --ice:#7FE9FF;
  --green:#3ECF8E;
  --slate:#2A3F55;
  --rail-w:264px;
  --hdr-h:62px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;
  --maxw:1140px;
  --gutter:clamp(18px,4vw,44px);
  --cut-tr:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,0 100%);
  --cut-br:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
}

*,*::before,*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}

body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:clip;
  -webkit-font-smoothing:antialiased;
}

main{display:block;}

h1,h2,h3,h4,h5,h6{
  margin:0 0 .6em;
  font-weight:800;
  line-height:1.08;
  letter-spacing:-.015em;
  color:var(--paper);
}

h1{font-size:clamp(32px,5.2vw,60px);}
h2{font-size:clamp(25px,3.4vw,38px);}
h3{font-size:clamp(19px,2.2vw,24px);line-height:1.2;}
h4{font-size:17px;line-height:1.35;}

p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}

a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px;}
a:hover{color:var(--paper);}

img{max-width:100%;}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;
  top:8px;
  left:8px;
  z-index:200;
  padding:10px 16px;
  background:var(--cyan);
  color:#04222A;
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  clip-path:var(--cut-br);
  transform:translateY(-180%);
  transition:transform .18s ease;
}
.skip-link:focus,
.skip-link:focus-visible{transform:translateY(0);color:#04222A;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  width:100%;
  background:var(--rail-bg);
  border-bottom:1px solid var(--slate);
}

.site-header__bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  min-height:62px;
  padding:9px clamp(14px,4vw,26px);
}

.brand{
  display:flex;
  align-items:center;
  gap:11px;
  min-height:44px;
  color:var(--paper);
  text-decoration:none;
}
.brand:hover{color:var(--paper);}

.brand__mark{
  display:grid;
  place-items:center;
  flex:none;
  width:36px;
  height:36px;
  background:var(--cyan);
  color:#04222A;
  font-size:16px;
  font-weight:800;
  line-height:1;
  clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
}

.brand__text{display:flex;flex-direction:column;gap:1px;}

.brand__name{
  font-size:15px;
  font-weight:800;
  line-height:1.2;
  letter-spacing:.02em;
}

.brand__line{
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:600;
  line-height:1.3;
  letter-spacing:.04em;
  color:var(--mist);
}

.nav-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-width:44px;
  min-height:44px;
  padding:0 12px;
  background:transparent;
  color:var(--paper);
  border:1px solid var(--slate);
  border-radius:0;
  font-family:var(--font-sans);
  font-size:13px;
  font-weight:700;
  cursor:pointer;
  clip-path:var(--cut-br);
  transition:color .16s ease,border-color .16s ease,background-color .16s ease;
}
.nav-toggle:hover{color:var(--cyan);border-color:var(--cyan);}
.nav-toggle[aria-expanded="true"]{color:var(--cyan);border-color:var(--cyan);background:rgba(34,224,214,.08);}

.nav-toggle__bars{display:grid;gap:4px;width:16px;}
.nav-toggle__bars span{
  display:block;
  height:2px;
  background:currentColor;
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.nav-toggle__label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
}

.site-nav{
  position:fixed;
  top:var(--hdr-h);
  right:0;
  bottom:0;
  left:auto;
  z-index:3;
  display:flex;
  flex-direction:column;
  width:min(330px,88vw);
  margin:0;
  padding:20px 16px 26px;
  background:#0C1E2E;
  border-top:1px solid var(--slate);
  border-left:1px solid var(--slate);
  overflow-y:auto;
  overscroll-behavior:contain;
  visibility:hidden;
  transform:translateX(103%);
  transition:transform .28s cubic-bezier(.4,0,.2,1),visibility .28s;
}
.site-nav[data-open]{visibility:visible;transform:translateX(0);}

.site-nav__label{
  margin:0 0 10px;
  padding-left:12px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.2em;
  color:var(--mist);
}

.site-nav__list{
  display:grid;
  gap:2px;
  margin:0;
  padding:0;
  list-style:none;
}

.site-nav__item{margin:0;}

.site-nav__link{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:44px;
  padding:8px 12px;
  border-left:2px solid transparent;
  color:var(--paper-dim);
  font-size:15px;
  font-weight:600;
  text-decoration:none;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease;
}
.site-nav__link:hover{background:rgba(34,224,214,.08);color:var(--paper);}

.site-nav__index{
  width:16px;
  flex:none;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:11px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--mist);
}

.site-nav__text{line-height:1.3;}

.site-nav__link[aria-current="page"]{
  background:var(--hull);
  color:var(--paper);
  border-left-color:var(--cyan);
}
.site-nav__link[aria-current="page"] .site-nav__index{color:var(--cyan);}

.rail-foot{
  display:grid;
  gap:10px;
  margin-top:auto;
  padding:20px 0 0;
  border-top:1px solid rgba(42,63,85,.8);
}

.rail-cta{
  width:100%;
  justify-content:center;
}

.legacy-tab{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:42px;
  padding:8px 12px;
  background:rgba(245,184,61,.07);
  border:1px solid rgba(245,184,61,.42);
  color:var(--amber);
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.04em;
  text-align:center;
  text-decoration:none;
  clip-path:var(--cut-br);
  transition:background-color .16s ease,border-color .16s ease;
}
.legacy-tab::before{
  content:"";
  flex:none;
  width:6px;
  height:6px;
  background:var(--amber);
  transform:rotate(45deg);
}
.legacy-tab:hover{background:rgba(245,184,61,.15);border-color:var(--amber);color:var(--amber);}

.rail-progress{
  position:relative;
  height:3px;
  margin-top:4px;
  background:rgba(42,63,85,.9);
  overflow:hidden;
}
.rail-progress__bar{
  position:absolute;
  inset:0 auto 0 0;
  width:0;
  background:var(--cyan);
  transition:width .12s linear;
}

.rail-scrim{
  position:fixed;
  top:var(--hdr-h);
  left:0;
  right:0;
  bottom:0;
  z-index:2;
  background:rgba(4,12,20,.68);
  opacity:0;
  pointer-events:none;
  transition:opacity .24s ease;
}
.site-header[data-open] .rail-scrim{opacity:1;pointer-events:auto;}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,90px);
  background:var(--deep);
  border-top:1px solid var(--slate);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  width:clamp(90px,16vw,200px);
  height:3px;
  background:var(--cyan);
}
.site-footer::after{
  content:"";
  position:absolute;
  top:-1px;
  left:calc(clamp(90px,16vw,200px) + 10px);
  width:44px;
  height:3px;
  background:var(--orange);
}

.footer__inner{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:clamp(32px,5vw,58px) var(--gutter) 24px;
}

.footer__top{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(26px,4vw,48px);
}

.footer__brand{min-width:0;}

.footer__mark{
  display:grid;
  place-items:center;
  width:40px;
  height:40px;
  margin-bottom:14px;
  background:var(--cyan);
  color:#04222A;
  font-size:18px;
  font-weight:800;
  line-height:1;
  clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
}

.footer__lead{
  margin:0 0 6px;
  font-size:clamp(19px,2.4vw,24px);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.01em;
  color:var(--paper);
}

.footer__tagline{
  margin:0;
  font-size:13.5px;
  letter-spacing:.04em;
  color:var(--mist);
}

.footer__legacy{
  margin-top:18px;
  width:auto;
}

.footer__cols{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(18px,3vw,32px);
}

.footer__col{min-width:0;}

.footer__col-title{
  margin:0 0 8px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--mist);
}

.footer__links{
  display:grid;
  gap:0;
  margin:0;
  padding:0;
  list-style:none;
}

.footer__links a{
  display:flex;
  align-items:center;
  min-height:44px;
  color:var(--paper-dim);
  font-size:14.5px;
  text-decoration:none;
  transition:color .16s ease;
}
.footer__links a:hover{color:var(--cyan);}

.footer__contact{
  display:grid;
  gap:5px;
  margin-top:clamp(28px,4vw,46px);
  padding-left:clamp(14px,2vw,20px);
  border-left:2px solid var(--cyan);
}

.footer__contact-line{
  margin:0;
  font-size:15px;
  font-weight:600;
  color:var(--paper);
}

.footer__contact-note,
.footer__address{
  margin:0;
  max-width:64ch;
  font-size:13.5px;
  line-height:1.7;
  color:var(--mist);
}

.footer__meta{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:8px 24px;
  margin-top:clamp(24px,4vw,38px);
  padding-top:16px;
  border-top:1px solid var(--slate);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--mist);
}
.footer__meta p{margin:0;}
.footer__copy{font-variant-numeric:tabular-nums;}
.footer__icp{font-variant-numeric:tabular-nums;}

/* ---------- layout ---------- */
.container{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.section{padding-block:clamp(40px,6vw,78px);}
.section--tight{padding-block:clamp(26px,3.5vw,46px);}

.divider{
  height:1px;
  margin:0;
  border:0;
  background:var(--slate);
}

.grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2.4vw,28px);
}

.span-4,.span-5,.span-6,.span-7,.span-8,.span-12{grid-column:1/-1;}

.stack{display:grid;gap:clamp(14px,2vw,22px);}

/* ---------- typography helpers ---------- */
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-weight:600;
  letter-spacing:.02em;
}

.kicker{
  display:flex;
  align-items:center;
  gap:10px;
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.2em;
  color:var(--cyan);
}
.kicker::before{
  content:"";
  flex:none;
  width:20px;
  height:2px;
  background:var(--cyan);
}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:14px 24px;
  margin-bottom:clamp(20px,3vw,34px);
}

.section-head__title{margin:0;}

.section-head__note{
  margin:0;
  max-width:46ch;
  font-size:14.5px;
  color:var(--mist);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:44px;
  padding:0 20px;
  border:1px solid transparent;
  border-radius:0;
  background:transparent;
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  text-decoration:none;
  cursor:pointer;
  clip-path:var(--cut-br);
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover{color:var(--paper);}

.btn--primary{background:var(--cyan);color:#04222A;}
.btn--primary:hover{background:#6BF0E8;color:#04222A;}

.btn--ghost{
  background:rgba(19,41,63,.6);
  border-color:var(--slate);
  color:var(--paper);
}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan);}

.btn--amber{
  background:transparent;
  border-color:rgba(245,184,61,.55);
  color:var(--amber);
}
.btn--amber:hover{background:rgba(245,184,61,.12);border-color:var(--amber);color:var(--amber);}

.btn:focus-visible,
.legacy-tab:focus-visible,
.nav-toggle:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
}

/* ---------- chips & dots ---------- */
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:2px 9px;
  background:rgba(19,41,63,.55);
  border:1px solid var(--slate);
  color:var(--mist);
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.08em;
  line-height:1.7;
}
.chip--cyan{color:var(--cyan);border-color:rgba(34,224,214,.5);background:rgba(34,224,214,.1);}
.chip--orange{color:var(--orange);border-color:rgba(255,106,43,.5);background:rgba(255,106,43,.1);}
.chip--amber{color:var(--amber);border-color:rgba(245,184,61,.5);background:rgba(245,184,61,.1);}
.chip--ice{color:var(--ice);border-color:rgba(127,233,255,.45);background:rgba(127,233,255,.1);}
.chip--green{color:var(--green);border-color:rgba(62,207,142,.5);background:rgba(62,207,142,.1);}

.dot{
  display:inline-block;
  flex:none;
  width:7px;
  height:7px;
  background:var(--mist);
}
.dot--cyan{background:var(--cyan);}
.dot--orange{background:var(--orange);}
.dot--amber{background:var(--amber);}
.dot--ice{background:var(--ice);}
.dot--green{background:var(--green);}

/* ---------- panels & texture ---------- */
.panel{
  position:relative;
  padding:clamp(18px,2.4vw,28px);
  background:var(--hull);
  border:1px solid var(--slate);
  clip-path:var(--cut-tr);
}

.panel--outline{background:transparent;}

.grid-tex{position:relative;}
.grid-tex::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(42,63,85,.6) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(42,63,85,.6) 1px,transparent 1px);
  background-size:8px 8px;
  opacity:.45;
}

/* ---------- media frames ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  width:100%;
  aspect-ratio:16/9;
  background:var(--hull);
  border:1px solid rgba(34,224,214,.26);
  clip-path:var(--cut-tr);
}
.media-frame>img,
.media-frame>picture>img,
.media-frame>picture{
  display:block;
  width:100%;
  height:100%;
}
.media-frame>img,
.media-frame>picture>img{object-fit:cover;}

.media-frame--wide{aspect-ratio:21/9;}
.media-frame--tall{aspect-ratio:3/4;}
.media-frame--square{aspect-ratio:1/1;}
.media-frame--slant{clip-path:polygon(0 0,100% 0,100% 100%,0 90%);}

.media-frame__tag{
  position:absolute;
  left:0;
  bottom:0;
  padding:4px 10px;
  background:var(--cyan);
  color:#04222A;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.1em;
}

.media-frame__grid::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(34,224,214,.14) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(34,224,214,.14) 1px,transparent 1px);
  background-size:24px 24px;
}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  font-size:13px;
  color:var(--mist);
}

.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:0;
  padding:0;
  list-style:none;
}

.breadcrumb__item{
  display:flex;
  align-items:center;
  gap:8px;
}
.breadcrumb__item+.breadcrumb__item::before{
  content:"/";
  color:var(--slate);
}

.breadcrumb__link{
  color:var(--mist);
  text-decoration:none;
}
.breadcrumb__link:hover{color:var(--cyan);}

/* ---------- table ---------- */
.table{
  width:100%;
  border-collapse:collapse;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:13.5px;
}
.table th,
.table td{
  padding:10px 12px;
  text-align:left;
  vertical-align:top;
  border-bottom:1px solid var(--slate);
}
.table thead th{
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--mist);
}
.table tbody tr:nth-child(even){background:rgba(19,41,63,.55);}

/* ---------- motion & filter protocol ---------- */
.js-reveal [data-reveal]{
  opacity:0;
  transform:translateY(12px);
}
.js-reveal [data-reveal].is-in{
  opacity:1;
  transform:none;
  transition:opacity .55s ease,transform .55s cubic-bezier(.22,.61,.36,1);
}

[data-filter-item].is-filtered-out{display:none !important;}

/* ---------- responsive ---------- */
@media (min-width:560px){
  .footer__cols{grid-template-columns:repeat(3,minmax(0,1fr));}
}

@media (min-width:800px){
  .span-4{grid-column:span 4;}
  .span-5{grid-column:span 5;}
  .span-6{grid-column:span 6;}
  .span-7{grid-column:span 7;}
  .span-8{grid-column:span 8;}
  .span-12{grid-column:1/-1;}
}

@media (min-width:860px){
  .footer__top{grid-template-columns:minmax(240px,1fr) minmax(0,1.65fr);}
}

@media (min-width:1024px){
  body{padding-left:var(--rail-w);}

  .skip-link{left:calc(var(--rail-w) + 12px);}

  .site-header{
    position:fixed;
    inset:0 auto 0 0;
    width:var(--rail-w);
    height:auto;
    display:flex;
    flex-direction:column;
    border-bottom:0;
    border-right:1px solid var(--slate);
    overflow-y:auto;
    overscroll-behavior:contain;
  }

  .site-header__bar{
    min-height:0;
    padding:26px 20px 20px;
    border-bottom:1px solid rgba(42,63,85,.8);
  }

  .brand{gap:12px;}
  .brand__mark{width:42px;height:42px;font-size:19px;}
  .brand__name{font-size:16px;}
  .brand__line{font-size:11px;}

  .nav-toggle{display:none;}

  .rail-scrim{display:none;}

  .site-nav{
    position:static;
    z-index:auto;
    width:auto;
    visibility:visible;
    transform:none;
    flex:1 1 auto;
    padding:18px 14px 0;
    background:transparent;
    border:0;
    overflow:visible;
    transition:none;
  }

  .site-nav__label{padding-left:12px;}
  .rail-foot{padding:20px 0 24px;}
  .rail-progress{margin-top:6px;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}

  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }

  .js-reveal [data-reveal],
  .js-reveal [data-reveal].is-in{
    opacity:1 !important;
    transform:none !important;
  }

  .site-nav{transition:none;}
  .rail-scrim{transition:none;}
  .rail-progress__bar{transition:none;}
}