/* IEEE SPS RIT-B component library */
:root{
  --bg:#f4f6f9; --surface:#fff; --surface-2:#f8fafc; --line:#e3e8ef; --line-2:#cfd7e2;
  --fg:#0f1b2a; --fg-2:#46566a; --muted:#7a8899;
  --brand:#00629b; --brand-2:#0a7bc0; --brand-soft:#e6f1f8; --on-brand:#fff;
  --ok:#147a43; --ok-soft:#e5f5ec; --bad:#b4271f; --bad-soft:#fcebea; --warn:#9a5b00; --warn-soft:#fdf2df; --info:#2251c9; --info-soft:#e8eefc;
  --blue:#2563eb; --violet:#7c3aed; --amber:#c2680c; --teal:#0d8a85; --rose:#d1365b; --green:#1f8f4e; --slate:#5b6b7f;
  --radius:14px; --shadow:0 1px 2px rgba(15,27,42,.05),0 2px 8px rgba(15,27,42,.04); --shadow-h:0 6px 24px rgba(15,27,42,.10);
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0b1118; --surface:#121a24; --surface-2:#18212d; --line:#223041; --line-2:#2f3f53;
  --fg:#e7edf4; --fg-2:#aab7c6; --muted:#7f8ea0;
  --brand:#3aa0e0; --brand-2:#5bb4ea; --brand-soft:#11283a; --on-brand:#06131e;
  --ok:#4fd08a; --ok-soft:#0f2b1d; --bad:#ff8077; --bad-soft:#341616; --warn:#f0b450; --warn-soft:#33250c; --info:#86a8ff; --info-soft:#152043;
  --blue:#6b9bff; --violet:#a98bff; --amber:#f0a14a; --teal:#3cc7c0; --rose:#ff7d9b; --green:#5ad08a; --slate:#9aa9bb;
  --shadow:0 1px 2px rgba(0,0,0,.4); --shadow-h:0 8px 28px rgba(0,0,0,.45);
}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.5 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.2;letter-spacing:-.01em;margin:0}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
main.wrap{padding-top:20px;padding-bottom:40px;min-height:70vh}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}
.muted{color:var(--muted)}.small{font-size:13px}.right{text-align:right}[hidden]{display:none!important}

/* header */
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;color:var(--fg);text-decoration:none!important}
.mark{color:var(--brand);display:flex}
.bt{display:flex;flex-direction:column;line-height:1.1}.bt b{font-size:16px}.bt small{color:var(--muted);font-size:12px}
.nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav>a,.navbtn,.more>summary{color:var(--fg-2);padding:8px 12px;border-radius:10px;font-weight:500;font-size:14px;text-decoration:none!important;cursor:pointer;background:none;border:0;font-family:inherit}
.nav>a:hover,.navbtn:hover,.more>summary:hover{background:var(--surface-2);color:var(--fg)}
.nav>a.on{color:var(--brand);background:var(--brand-soft)}
.nav form.inline{margin:0}
.more{position:relative}.more>summary{list-style:none}.more>summary::-webkit-details-marker{display:none}
.more>summary::after{content:"";display:inline-block;margin-left:6px;border:4px solid transparent;border-top-color:currentColor;transform:translateY(2px)}
.menu{position:absolute;right:0;top:calc(100% + 6px);background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-h);padding:6px;min-width:190px;display:flex;flex-direction:column}
.menu a,.menu button{padding:8px 10px;border-radius:8px;color:var(--fg);text-align:left;background:none;border:0;font:inherit;cursor:pointer;text-decoration:none!important}
.menu a:hover,.menu button:hover{background:var(--surface-2)}.menu form{margin:0;border-top:1px solid var(--line);margin-top:4px;padding-top:4px}
.cartbtn{display:flex!important;align-items:center;gap:6px;margin-left:4px;border:1px solid var(--line-2)}
.cartbtn em{font-style:normal;background:var(--brand);color:var(--on-brand);border-radius:99px;font-size:12px;min-width:20px;height:20px;display:grid;place-items:center;padding:0 6px;font-weight:700}

/* toasts */
.toasts{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.toast{padding:11px 14px;border-radius:12px;background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--brand);box-shadow:var(--shadow)}
.toast.ok{border-left-color:var(--ok)}.toast.err{border-left-color:var(--bad)}

/* hero */
.hero{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;padding:28px;border-radius:20px;margin-bottom:18px;color:#fff;
  background:radial-gradient(1200px 300px at 100% 0,rgba(255,255,255,.14),transparent 60%),linear-gradient(135deg,#00527f,#0077b8 55%,#1593cf)}
.hero h1{font-size:30px;font-weight:750}.hero p{margin:8px 0 0;max-width:560px;opacity:.9}
.hstats{display:flex;gap:10px}
.hstats div{background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.2);border-radius:14px;padding:10px 16px;min-width:92px;text-align:center}
.hstats b{display:block;font-size:24px;line-height:1.1}.hstats span{font-size:12px;opacity:.85}.hstats .okc{color:#9ff0c2}

/* toolbar, chips */
.toolbar{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:12px}
.search{flex:1 1 320px;display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line-2);border-radius:12px;padding:0 14px;color:var(--muted);box-shadow:var(--shadow)}
.search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.search input{border:0!important;background:none!important;box-shadow:none!important;padding:12px 0!important;margin:0!important;font-size:15px;outline:none}
.switch{display:inline-flex;align-items:center;gap:10px;color:var(--fg-2);cursor:pointer;user-select:none;font-size:14px;margin:0}
.switch input{position:absolute;opacity:0;width:0;height:0}
.switch span{width:38px;height:22px;border-radius:99px;background:var(--line-2);position:relative;transition:.2s}
.switch span::after{content:"";position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:#fff;transition:.2s;box-shadow:0 1px 2px rgba(0,0,0,.2)}
.switch input:checked+span{background:var(--ok)}.switch input:checked+span::after{left:19px}
.switch input:focus-visible+span{outline:2px solid var(--brand);outline-offset:2px}
.chips{display:flex;gap:8px;overflow-x:auto;padding:4px 0 10px;margin-bottom:10px;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{display:inline-flex;align-items:center;gap:7px;white-space:nowrap;padding:8px 13px;border-radius:99px;border:1px solid var(--line-2);background:var(--surface);color:var(--fg-2);font-family:inherit;font-weight:500;font-size:14px;line-height:1;cursor:pointer}
.chip em{font-style:normal;font-size:12px;color:var(--muted);background:var(--surface-2);border-radius:99px;padding:2px 7px}
.chip svg{color:var(--accent,var(--brand))}
.chip:hover{border-color:var(--accent,var(--brand))}
.chip.on{background:var(--fg);color:var(--bg);border-color:var(--fg)}.chip.on svg{color:inherit}.chip.on em{background:rgba(127,127,127,.25);color:inherit}

/* accents */
.c-blue{--accent:var(--blue)}.c-violet{--accent:var(--violet)}.c-amber{--accent:var(--amber)}.c-teal{--accent:var(--teal)}.c-rose{--accent:var(--rose)}.c-green{--accent:var(--green)}.c-slate{--accent:var(--slate)}
.ci{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:11px;color:var(--accent,var(--brand));background:color-mix(in srgb,var(--accent,var(--brand)) 12%,transparent)}
.ci.big{width:68px;height:68px;border-radius:18px}

/* category sections + cards */
.cat{margin:22px 0 8px;scroll-margin-top:80px}
.cath{display:flex;align-items:center;gap:12px;font-size:19px;margin-bottom:12px}
.cath .ci{width:34px;height:34px;border-radius:10px}
.cath small{font-weight:500;font-size:13px;color:var(--muted);margin-left:2px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.pcard{position:relative;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);transition:transform .15s,box-shadow .15s,border-color .15s;min-height:190px}
.pcard:hover{transform:translateY(-2px);box-shadow:var(--shadow-h);border-color:color-mix(in srgb,var(--accent) 40%,var(--line))}
.pcard .cover{position:absolute;inset:0;border-radius:inherit;z-index:1}
.pcard .cover:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.ptop{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px}
.pcard h3{font-size:16px;font-weight:650}
.pcard .sub{margin:3px 0 0;color:var(--muted);font-size:13px}
.pcard .desc{margin:8px 0 0;color:var(--fg-2);font-size:13.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pfoot{margin-top:auto;padding-top:14px;display:flex;align-items:center;gap:10px}
.meter{flex:1;height:6px;border-radius:99px;background:var(--surface-2);border:1px solid var(--line);overflow:hidden}
.meter i{display:block;height:100%;background:var(--ok);border-radius:99px}
.count{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.pfoot form{margin:0;position:relative;z-index:2}
.add{width:34px;height:34px;border-radius:10px;border:1px solid var(--line-2);background:var(--surface);color:var(--brand);display:grid;place-items:center;cursor:pointer}
.add:hover{background:var(--brand);color:var(--on-brand);border-color:var(--brand)}
.empty{text-align:center;color:var(--muted);padding:40px}

/* badges */
.badge,.pill{display:inline-flex;align-items:center;gap:4px;padding:3px 9px;border-radius:99px;font-size:12px;font-weight:600;white-space:nowrap;border:0}
.badge.ok,.pill.ok{background:var(--ok-soft);color:var(--ok)}
.badge.bad,.pill.bad{background:var(--bad-soft);color:var(--bad)}
.badge.warn,.pill.warn{background:var(--warn-soft);color:var(--warn)}
.badge.info{background:var(--info-soft);color:var(--info)}
.badge.muted,.pill.gray{background:var(--surface-2);color:var(--muted)}
.ok{color:var(--ok)}.bad{color:var(--bad)}.warn{color:var(--warn)}.gray{color:var(--muted)}

/* product page */
.crumb{display:inline-flex;align-items:center;gap:4px;color:var(--fg-2);font-size:14px;margin-bottom:12px}
.phead{display:grid;grid-template-columns:auto 1fr 280px;gap:20px;align-items:start;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:var(--shadow)}
.kicker{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--accent)}
.phead h1{font-size:26px;margin:4px 0 2px}.phead .sub{margin:0;color:var(--muted)}.phead .lead{margin:12px 0 0;color:var(--fg-2);max-width:620px}
.pside{display:flex;flex-direction:column;gap:10px;background:var(--surface-2);border:1px solid var(--line);border-radius:14px;padding:16px}
.big-avail{font-size:14px;color:var(--fg-2)}.big-avail b{display:block;font-size:30px;line-height:1.1}
.big-avail.ok b{color:var(--ok)}.big-avail.bad b{color:var(--bad)}
.pphoto{max-width:100%;max-height:320px;border-radius:14px;margin-top:16px;border:1px solid var(--line)}
.h2{font-size:18px;margin:26px 0 10px}
tr.hl td{background:var(--info-soft)}

/* generic building blocks (admin + forms) */
.pagetitle{font-size:24px;margin:4px 0 16px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin:14px 0;box-shadow:var(--shadow)}
.card h2{font-size:20px;margin-bottom:8px}.card h3{font-size:16px;margin:14px 0 8px}
.narrow{max-width:420px;margin:40px auto}
.head{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
h3{font-size:16px;margin:20px 0 8px}
label{display:block;margin:10px 0;font-size:13px;font-weight:500;color:var(--fg-2)}
label.inl{display:inline-flex;gap:6px;align-items:center;margin:0 10px 0 0;font-weight:400}
input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--line-2);border-radius:10px;background:var(--surface);color:var(--fg);font:inherit;margin-top:5px;transition:border-color .15s,box-shadow .15s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
input[type=checkbox]{width:auto;margin:0;accent-color:var(--brand)}input[type=file]{border:1px dashed var(--line-2);padding:10px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:0 16px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--brand);color:var(--on-brand);border:1px solid var(--brand);padding:9px 16px;border-radius:10px;text-decoration:none!important;cursor:pointer;font-family:inherit;font-weight:600;font-size:14px;line-height:1.2;transition:filter .15s,background .15s}
.btn:hover{filter:brightness(1.08)}
.btn.ghost{background:var(--surface);color:var(--brand);border-color:var(--line-2)}.btn.ghost:hover{border-color:var(--brand);filter:none}
.btn.wide{width:100%}.btn[disabled]{opacity:.5;cursor:not-allowed}
button.link{background:none;border:0;color:var(--brand);cursor:pointer;font:inherit;padding:0}
.filters,.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:12px 0}
.filters input,.filters select,.row input{width:auto;flex:1 1 180px;margin:0}.sp{flex:1}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin:8px 0;box-shadow:var(--shadow)}
.tablewrap table{border:0;margin:0;box-shadow:none;border-radius:0}
th,td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
tr:last-child td{border-bottom:0}
th{font-size:12px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;background:var(--surface-2)}
tbody tr:hover td{background:color-mix(in srgb,var(--surface-2) 70%,transparent)}
td small{display:block;color:var(--muted)}td input[type=number]{width:80px;margin:0}
td .small{display:block;margin-top:3px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:8px 0 16px}
.stats div{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px;color:var(--muted);font-size:13px;box-shadow:var(--shadow)}
.stats b{display:block;font-size:28px;color:var(--fg);line-height:1.15}
dl{display:grid;grid-template-columns:150px 1fr;gap:8px 16px;margin:12px 0}dt{color:var(--muted)}dd{margin:0}
.photo{float:right;max-width:200px;max-height:160px;border-radius:12px;margin:0 0 8px 12px}
.opt{display:block;width:100%;text-align:left;padding:10px 12px;background:var(--surface);color:var(--fg);border:1px solid var(--line);border-radius:10px;margin:4px 0;cursor:pointer;font:inherit}
.opt:hover{border-color:var(--brand)}
details>summary{cursor:pointer;color:var(--brand);font-weight:500;margin:10px 0}
code{background:var(--surface-2);padding:1px 6px;border-radius:6px;font-size:.9em}
.foot{color:var(--muted);font-size:13px;padding:24px 20px 40px;border-top:1px solid var(--line);margin-top:20px;text-align:center}

@media (max-width:820px){
  .phead{grid-template-columns:auto 1fr}.pside{grid-column:1/-1}
}
@media (max-width:640px){
  .wrap{padding:0 16px}
  .hero{padding:22px 18px;border-radius:16px}.hero h1{font-size:24px}.hstats{width:100%}.hstats div{flex:1;min-width:0;padding:8px}
  .bt small{display:none}.nav>a,.more>summary{padding:7px 9px}
  .cards{grid-template-columns:1fr}
  .phead{grid-template-columns:1fr;padding:18px}.ci.big{width:52px;height:52px}
  .stats{grid-template-columns:repeat(2,1fr)}dl{grid-template-columns:1fr}
  table.responsive th:nth-child(n+4),table.responsive td:nth-child(n+4){display:none}
}

/* two-column detail layout */
.two{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:20px;align-items:start}
.two aside .card:first-child{margin-top:14px}
.act{border-color:color-mix(in srgb,var(--brand) 35%,var(--line))}
.btn.danger{color:var(--bad)}.btn.danger:hover{border-color:var(--bad)}
.kicker{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.06em}
.steps{margin:14px 0 0;padding-left:20px;color:var(--fg-2)}.steps li{margin:4px 0}
@media (max-width:900px){.two{grid-template-columns:1fr}}

/* timeline */
.tl{list-style:none;margin:0;padding:0;position:relative}
.tl li{position:relative;padding:0 0 18px 26px}
.tl li::before{content:"";position:absolute;left:6px;top:14px;bottom:-2px;width:2px;background:var(--line)}
.tl li:last-child{padding-bottom:0}.tl li:last-child::before{display:none}
.tl .dot{position:absolute;left:0;top:4px;width:14px;height:14px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 3px var(--surface)}
.tl .tl-ok .dot{background:var(--ok)}.tl .tl-bad .dot{background:var(--bad)}
.tl .tl-todo .dot{background:var(--surface);border:2px solid var(--line-2)}
.tl .tl-next .dot{border-color:var(--brand);border-style:dashed}
.tl-row{display:flex;justify-content:space-between;gap:8px;align-items:baseline}
.tl-row b{font-weight:600;font-size:14px}.tl-todo .tl-row b{color:var(--muted);font-weight:500}
.tl-row time{font-size:12px;color:var(--muted);white-space:nowrap;font-variant-numeric:tabular-nums}
.tl-next .tl-row time{color:var(--brand);font-weight:600}
.tl-by{font-size:13px;color:var(--fg-2)}
.tl-rem{margin-top:6px;font-size:13px;background:var(--surface-2);border:1px solid var(--line);border-radius:8px;padding:6px 10px;color:var(--fg-2)}
.tl-bad .tl-rem{background:var(--bad-soft);border-color:transparent;color:var(--bad)}
.pick{border:1px solid var(--line);border-radius:12px;padding:10px 12px;margin:10px 0;background:var(--surface-2)}
.pickrow{display:grid;grid-template-columns:1fr;gap:6px;margin-top:8px;padding-top:8px;border-top:1px dashed var(--line)}.pickrow:first-of-type{border-top:0;padding-top:0}
.pickrow select,.pickrow input{margin:0}
.otp{font:600 26px/1 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.25em;text-align:center;padding:14px}