/* SI:IX / SiO — a reactive identity, with quiet surfaces for reading. */
body { background: #050910; isolation: isolate; }
body::before { z-index: -1; opacity: .28; }
#sio-field { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; }
.top-nav { background: rgba(8,14,24,.94); border-color: #24404b; }
.umbrella-hero { background: linear-gradient(120deg,rgba(8,17,28,.93),rgba(10,17,30,.75)); border-color: #25454f; padding: clamp(24px,4vw,54px); }
.umbrella-hero::before { height: 1px; background: linear-gradient(90deg,transparent,#5ef6dc,#9675ff,transparent); }
.hero-h1 { font-size: clamp(2.7rem,5.6vw,5.4rem); line-height: .99; letter-spacing: -.055em; max-width: 850px; margin: 24px 0; }
.hero-h1 em { display: block; font-style: normal; color: #8fffe4; text-shadow: 0 0 36px #46d7c832; }
.hero-p { max-width: 680px; font-size: 1.03rem; line-height: 1.75; color: #bbc8d5; }
.hero-eyebrow { font-size: .68rem; letter-spacing: .15em; }
.sio-signature { color: #8fa5ba; font: .68rem var(--font-mono); letter-spacing: .18em; margin: 20px 0 0; }
.div-mini-card { background: rgba(6,12,22,.88); transition: border-color .25s, transform .25s, box-shadow .25s; }
.div-mini-card:hover { transform: translateY(-3px); border-color: #68ddca; box-shadow: 0 8px 35px #50dec312; }
.route-subnav { background: rgba(6,12,22,.9); }
.sio-controls { position: relative; font: .75rem var(--font-mono); }
.sio-controls summary { list-style: none; cursor: pointer; color: #95e9d8; border: 1px solid #31504f; border-radius: 8px; padding: 8px 12px; white-space: nowrap; }
.sio-controls summary::-webkit-details-marker { display: none; }
.sio-controls summary::before { content: '◌ '; color: #74ffe2; }
.sio-controls[open] summary { background: #102d2e; }
.sio-control-panel { position: absolute; left: 0; top: calc(100% + 10px); width: 270px; padding: 20px; border: 1px solid #41626a; border-radius: 12px; background: #09141f; box-shadow: 0 16px 40px #0009; display: grid; gap: 15px; z-index: 120; }
.sio-control-panel label { display: grid; gap: 8px; color: #d2e4ed; }
.sio-control-panel select { width: 100%; border: 1px solid #38505e; border-radius: 6px; padding: 8px; background: #122331; color: #edfaff; font: inherit; }
.sio-control-panel input { accent-color: #6bf1d4; width: 100%; }
.sio-control-panel p { color: #93a9b7; font-size: .68rem; line-height: 1.6; }
.sio-controls :focus-visible { outline: 2px solid #a4ffe9; outline-offset: 4px; }
@media(max-width:600px) {
  .top-nav { position: relative; top: 0; padding: 16px; }
  .division-tabs { flex-wrap: nowrap; overflow-x: auto; width: 100%; padding-bottom: 8px; scrollbar-color: #385e66 transparent; }
  .division-tabs .tab-btn { flex: 0 0 auto; }
  .hero-h1 { font-size: clamp(2.6rem,10vw,3.6rem); }
  .sio-control-panel { position: fixed; right: 20px; left: 20px; bottom: 145px; top: auto; width: auto; max-height: calc(100dvh - 180px); overflow-y: auto; }
}
@media(prefers-reduced-motion:reduce) {
  html { scroll-behavior: auto; }
  .div-mini-card { transition: none; }
  .div-mini-card:hover { transform: none; }
}
@media print { #sio-field, .sio-controls { display:none !important; } }