/* ============================================================
   THE SOUNDING — site.css  (single stylesheet; no inline styles anywhere)
   palette
   abyss   #03080F   base at depth
   trench  #061421   
   shelf   #0B2A3D   upper water column
   brine   #12455E
   lumen   #4FE3C1   bioluminescence (primary)
   lure    #FFC96B   anglerfish lure (conditional / warm)
   coral   #FF7285   off-limits
   foam    #DDEEF3   text
   silt    #85AAB9   muted
   ============================================================ */
:root{
  --abyss:#03080F; --trench:#061421; --shelf:#0B2A3D; --brine:#12455E;
  --lumen:#4FE3C1; --lure:#FFC96B; --coral:#FF7285;
  --foam:#DDEEF3; --silt:#85AAB9; --hair:rgba(133,170,185,.22);
  --depth:0;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono","Cascadia Mono","Roboto Mono",Menlo,Consolas,monospace;
  --gut:clamp(18px,4vw,40px);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--abyss); color:var(--foam);
  font-family:var(--sans); font-size:17px; line-height:1.68;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
/* ---------- water column backdrop ---------- */
#water{position:fixed; inset:0; z-index:-3; background:
  linear-gradient(180deg,#1B6C86 0%,#0E4A66 12%,#0B2A3D 30%,#061421 55%,#03080F 78%,#01050A 100%);
  background-size:100% 100vh;}
#watershift{position:fixed; inset:0; z-index:-2; pointer-events:none;
  background:var(--abyss); opacity:calc(var(--depth) * .92); transition:opacity .18s linear;}
#caustics{position:fixed; top:0; left:0; right:0; height:78vh; z-index:-1; pointer-events:none;
  opacity:calc(1 - var(--depth)*1.9); transition:opacity .2s linear;
  background:
    repeating-linear-gradient(97deg, rgba(190,255,246,.055) 0 2px, transparent 2px 46px),
    repeating-linear-gradient(83deg, rgba(190,255,246,.045) 0 1px, transparent 1px 71px);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.95),transparent 85%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.95),transparent 85%);
  animation:sway 19s ease-in-out infinite alternate;}
@keyframes sway{from{transform:translateX(-3%) skewX(-1.5deg)}to{transform:translateX(3%) skewX(1.5deg)}}
#snow{position:fixed; inset:0; z-index:-1; pointer-events:none;}

/* ---------- the sounding line: fixed instrument ---------- */
#rig{position:fixed; left:0; top:0; bottom:0; width:96px; z-index:60; pointer-events:none;
  display:flex; flex-direction:column; justify-content:center; align-items:center;}
#rig .wire{position:absolute; top:0; bottom:0; left:47px; width:1px;
  background:linear-gradient(180deg,transparent,var(--hair) 8%,var(--hair) 92%,transparent);}
#rig .bead{position:absolute; left:41px; width:13px; height:13px; border-radius:50%;
  top:0; background:var(--lumen); box-shadow:0 0 14px 3px rgba(79,227,193,.6); transition:top .1s linear;}
#gauge{position:relative; z-index:2; text-align:center; pointer-events:auto;
  background:rgba(3,8,15,.55); backdrop-filter:blur(7px); -webkit-backdrop-filter:blur(7px);
  border:1px solid var(--hair); border-radius:2px; padding:12px 6px 10px; width:88px;}
#dnum{font-family:var(--mono); font-size:23px; font-weight:700; letter-spacing:-.04em;
  font-variant-numeric:tabular-nums; color:var(--lumen); line-height:1; display:block;}
#dunit{font-family:var(--mono); font-size:9px; color:var(--silt); letter-spacing:.22em; display:block; margin-top:4px}
#dzone{font-family:var(--mono); font-size:8.5px; color:var(--foam); letter-spacing:.14em;
  margin-top:9px; padding-top:8px; border-top:1px solid var(--hair); line-height:1.5; opacity:.82}
#rig nav{margin-top:14px; display:flex; flex-direction:column; gap:9px; align-items:center; pointer-events:auto}
#rig nav a{width:9px;height:9px;border-radius:50%;border:1px solid var(--silt);opacity:.5;
  transition:all .25s; display:block; position:relative}
#rig nav a:hover,#rig nav a.on,#rig nav a[aria-current="true"]{opacity:1;background:var(--lumen);border-color:var(--lumen);
  box-shadow:0 0 10px rgba(79,227,193,.7)}
#rig nav a span{position:absolute;left:16px;top:-5px;white-space:nowrap;font-family:var(--mono);
  font-size:9.5px;letter-spacing:.1em;color:var(--foam);background:rgba(3,8,15,.85);padding:3px 7px;
  border:1px solid var(--hair);opacity:0;transform:translateX(-4px);transition:.2s;pointer-events:none}
#rig nav a:hover span{opacity:1;transform:translateX(0)}
#tosounder{pointer-events:auto;margin-top:16px;font-family:var(--mono);font-size:9px;letter-spacing:.12em;
  color:var(--abyss);background:var(--lumen);border:0;padding:9px 6px;cursor:pointer;border-radius:2px;
  writing-mode:vertical-rl;text-orientation:mixed;font-weight:700;text-decoration:none;display:block;line-height:normal}
#tosounder:hover{background:#7CF0D6}

/* ---------- layout ---------- */
main{padding-left:96px}
.zone{padding:clamp(70px,11vh,130px) var(--gut); max-width:1180px; margin:0 auto; position:relative}
.wrap{max-width:760px}
.wide{max-width:1080px}
.eyebrow{font-family:var(--mono); font-size:10.5px; letter-spacing:.3em; color:var(--lumen);
  text-transform:uppercase; margin:0 0 18px; display:flex; align-items:center; gap:12px}
.eyebrow::after{content:""; flex:1; height:1px; background:var(--hair)}
h1,h2,h3{font-family:var(--serif); font-weight:400; letter-spacing:-.015em}
h1{font-size:clamp(40px,7.4vw,84px); line-height:.98; margin:0 0 26px}
h2{font-size:clamp(29px,4.4vw,47px); line-height:1.05; margin:0 0 20px}
h3{font-size:clamp(20px,2.5vw,26px); line-height:1.2; margin:38px 0 12px; color:var(--foam)}
h4,.label{font-family:var(--sans); font-size:13px; letter-spacing:.09em; text-transform:uppercase;
  color:var(--lumen); margin:30px 0 10px; font-weight:600; line-height:1.68}
p{margin:0 0 17px; color:#C9E1E9}
.lede{font-size:clamp(18px,2.1vw,21.5px); line-height:1.6; color:var(--foam)}
a{color:var(--lumen)}
strong{color:#EFF9FB; font-weight:600}
em{color:#EFF9FB}
sup a{font-family:var(--mono); font-size:9.5px; text-decoration:none; padding:0 1px 0 2px;
  border-bottom:1px dotted rgba(79,227,193,.5)}
sup a:hover{color:var(--lure); border-color:var(--lure)}
.cite{font-family:var(--mono); font-size:12px; color:var(--silt); letter-spacing:.02em}
hr.rule{border:0;height:1px;background:var(--hair);margin:44px 0}

/* ---------- hero ---------- */
#hero{min-height:100vh; display:flex; flex-direction:column; justify-content:center;
  padding-top:70px; padding-bottom:70px; max-width:1180px}
.statute{border-left:2px solid var(--lumen); padding:4px 0 4px 24px; margin:30px 0 34px; max-width:820px}
.statute p{font-family:var(--serif); font-size:clamp(17px,2.2vw,22px); line-height:1.5; color:#EAF6F9; margin-bottom:14px}
.statute p:last-child{margin-bottom:0}
.statute .marker{font-family:var(--mono);font-size:11px;color:var(--lure);letter-spacing:.14em;display:block;margin-bottom:8px}
.herofoot{display:flex;flex-wrap:wrap;gap:26px 42px;margin-top:12px;align-items:flex-start}
.fact{max-width:210px}
.fact b{display:block;font-family:var(--mono);font-size:27px;color:var(--lumen);letter-spacing:-.04em;line-height:1}
.fact span{display:block;font-size:13px;color:var(--silt);line-height:1.45;margin-top:7px}
.scrollcue{margin-top:52px;font-family:var(--mono);font-size:10px;letter-spacing:.26em;color:var(--silt);
  display:flex;align-items:center;gap:11px}
.scrollcue i{display:block;width:1px;height:34px;background:linear-gradient(180deg,var(--lumen),transparent);
  animation:drop 2.1s ease-in-out infinite}
@keyframes drop{0%{transform:translateY(-9px);opacity:0}40%{opacity:1}100%{transform:translateY(9px);opacity:0}}

/* ---------- sounder (search) ---------- */
#sounder{scroll-margin-top:20px}
.searchbox{position:relative;margin:26px 0 16px}
.searchbox input{width:100%;background:rgba(11,42,61,.55);border:1px solid var(--hair);
  border-radius:2px;color:var(--foam);font-family:var(--sans);font-size:17px;padding:17px 100px 17px 46px;
  outline:none;transition:.2s}
.searchbox input:focus{border-color:var(--lumen);box-shadow:0 0 0 3px rgba(79,227,193,.13);background:rgba(11,42,61,.8)}
.searchbox input::placeholder{color:var(--silt)}
.searchbox .ico{position:absolute;left:17px;top:50%;transform:translateY(-50%);color:var(--lumen);
  font-family:var(--mono);font-size:15px;pointer-events:none}
.searchbox kbd{position:absolute;right:14px;top:50%;transform:translateY(-50%);font-family:var(--mono);
  font-size:10px;color:var(--silt);border:1px solid var(--hair);padding:3px 7px;border-radius:2px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.chip{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;
  background:transparent;border:1px solid var(--hair);color:var(--silt);padding:7px 13px;border-radius:2px;
  cursor:pointer;transition:.18s}
.chip:hover{color:var(--foam);border-color:var(--silt)}
.chip[aria-pressed="true"]{background:var(--lumen);border-color:var(--lumen);color:var(--abyss);font-weight:700}
.chip[aria-pressed="true"][data-f="cond"]{background:var(--lure);border-color:var(--lure)}
.chip[aria-pressed="true"][data-f="no"]{background:var(--coral);border-color:var(--coral)}
#count{font-family:var(--mono);font-size:11px;color:var(--silt);letter-spacing:.1em;margin:0 0 14px;min-height:1.68em}
#results{display:grid;gap:1px;background:var(--hair);border:1px solid var(--hair);border-radius:2px;overflow:hidden}
.row{background:#071925;transition:background .15s}
.row>summary{padding:15px 18px;display:grid;grid-template-columns:1fr auto;gap:6px 16px;
  align-items:start;cursor:pointer;list-style:none}
.row>summary::-webkit-details-marker,.row>summary::marker{display:none;content:""}
.row>summary:focus-visible{outline-offset:-3px}
.row:hover{background:#0B2637}
.row[open]{background:#0B2637}
.row .nm{font-size:16.5px;color:var(--foam);font-weight:500;grid-column:1;margin:0}
.row .badges{display:flex;gap:6px;flex-shrink:0;align-items:center}
.tag{font-family:var(--mono);font-size:9px;letter-spacing:.1em;padding:4px 8px;border-radius:2px;
  white-space:nowrap;font-weight:700}
.t-clear{background:rgba(79,227,193,.15);color:var(--lumen);border:1px solid rgba(79,227,193,.4)}
.t-cond{background:rgba(255,201,107,.13);color:var(--lure);border:1px solid rgba(255,201,107,.4)}
.t-no{background:rgba(255,114,133,.13);color:var(--coral);border:1px solid rgba(255,114,133,.4)}
.t-admin{background:rgba(133,170,185,.12);color:var(--silt);border:1px solid var(--hair)}
.row .detail{margin:-5px 18px 0;padding:12px 0 15px;border-top:1px solid var(--hair)}
.row .detail p{font-size:15px;margin:0 0 10px;color:#BCD8E1}
.row .detail .ca{font-size:14px;color:var(--silt);margin:0}
.row .detail .ca b{color:var(--foam);font-weight:600}
.empty{background:#071925;padding:34px 18px;text-align:center;color:var(--silt);font-size:15px}
.empty b{display:block;color:var(--foam);font-family:var(--serif);font-size:20px;margin-bottom:7px}
.empty p{margin:12px 0 0;color:var(--silt);font-size:15px}
.empty a{color:var(--lumen)}
#results .empty+.row{border-top:1px solid var(--hair)}

/* ---------- charts / plates ---------- */
.plate{margin:44px 0;border:1px solid var(--hair);background:rgba(6,20,33,.55);border-radius:2px;
  padding:26px clamp(16px,3vw,30px) 22px}
.plate .cap{font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--lure);
  text-transform:uppercase;margin-bottom:5px}
.plate .ttl{font-family:var(--serif);font-size:22px;line-height:1.25;margin:0 0 4px;color:var(--foam)}
.plate .sub{font-size:14px;color:var(--silt);margin:0 0 22px;max-width:640px;line-height:1.55}
.plate svg{display:block;width:100%;height:auto;overflow:visible}
.plate .note{font-size:12.5px;color:var(--silt);margin:18px 0 0;line-height:1.55;border-top:1px solid var(--hair);padding-top:13px}
.legend{display:flex;flex-wrap:wrap;gap:8px 20px;margin:0 0 18px;font-family:var(--mono);font-size:10.5px;
  letter-spacing:.06em;color:var(--silt)}
.legend i{display:inline-block;width:11px;height:11px;margin-right:7px;vertical-align:-1px;border-radius:1px}
text{font-family:var(--mono);fill:var(--silt)}
.vlab{font-size:11px;fill:var(--foam)}
.vnum{font-size:12px;fill:var(--lumen);font-weight:700}
.bar-num{font-size:16px;fill:#03080F;font-weight:700}
.bar-num-light{font-size:16px;fill:#DDEEF3;font-weight:700}
.ax-lab{font-size:13px;fill:#DDEEF3}
.t12-lumen-b{font-size:12px;fill:#4FE3C1;font-weight:700}
.t12-dark-b{font-size:12px;fill:#03080F;font-weight:700}
.t12-lure-b{font-size:12px;fill:#FFC96B;font-weight:700}
.t12-foam{font-size:12px;fill:#DDEEF3}
.t11{font-size:11px}
.t11-lure{font-size:11px;fill:#FFC96B}
.t11-silt{font-size:11px;fill:#85AAB9}
.t11-lumen{font-size:11px;fill:#4FE3C1}
.t105{font-size:10.5px}
.t105-lure{font-size:10.5px;fill:#FFC96B}
.t115-silt{font-size:11.5px;fill:#85AAB9}
.t115-lure{font-size:11.5px;fill:#FFC96B}
.t115-sky{font-size:11.5px;fill:#7FB6D6}
.t125-lure{font-size:12.5px;fill:#FFC96B}
.t125-foam{font-size:12.5px;fill:#DDEEF3}
.t125-silt{font-size:12.5px;fill:#85AAB9}
.f-foam{fill:#DDEEF3}
/* legend swatches */
.sw-lumen{background:#4FE3C1}.sw-lure{background:#FFC96B}.sw-coral{background:#FF7285}.sw-slate{background:#3D5D6B}
.sw-mint{background:#6FE0B5}.sw-sky{background:#7FB6D6}.sw-violet{background:#A88BD0}.sw-deep{background:#2E5C70}

/* ---------- misc components ---------- */
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(275px,1fr));gap:1px;background:var(--hair);
  border:1px solid var(--hair);margin:32px 0}
.cell{background:#071925;padding:22px}
.cell .ctitle{margin:0 0 9px;font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;color:var(--lumen);text-transform:uppercase;font-weight:600;line-height:1.68}
.cell p{margin:0;font-size:15px;color:#BCD8E1}
.pull{font-family:var(--serif);font-size:clamp(21px,3vw,29px);line-height:1.32;color:#EAF6F9;
  border-top:1px solid var(--hair);border-bottom:1px solid var(--hair);padding:26px 0;margin:40px 0}
table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px}
th{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--lumen);
  text-align:left;padding:0 14px 10px 0;border-bottom:1px solid var(--hair);font-weight:600;vertical-align:bottom}
td{padding:13px 14px 13px 0;border-bottom:1px solid rgba(133,170,185,.11);color:#C9E1E9;vertical-align:top}
td:first-child{color:var(--foam)}
.mono{font-family:var(--mono);font-size:13px}
.lumen{color:var(--lumen)}
.lure{color:var(--lure)}
.coral{color:var(--coral)}
td.lumen,td.lure,td.coral{color:inherit}
td.mono.lumen{color:var(--lumen)}td.mono.lure{color:var(--lure)}td.mono.coral{color:var(--coral)}
th.w32{width:32%}th.w22{width:22%}
.w720{max-width:720px}
.mt16{margin-top:16px}
ul.ticks{list-style:none;padding:0;margin:18px 0}
ul.ticks li{padding:9px 0 9px 26px;position:relative;border-bottom:1px solid rgba(133,170,185,.11);
  font-size:15.5px;color:#C9E1E9}
ul.ticks li::before{content:"◈";position:absolute;left:0;top:9px;color:var(--lumen);font-size:11px}
ul.ticks li.x::before{content:"✕";color:var(--coral)}
ul.ticks li.c::before{content:"◆";color:var(--lure)}
.creature{position:absolute;right:var(--gut);top:clamp(60px,10vh,120px);width:clamp(90px,13vw,168px);
  opacity:.5;pointer-events:none}
.creature svg{width:100%;height:auto;display:block}
@media(max-width:900px){.creature{display:none}}

/* timeline */
.tl{position:relative;margin:36px 0;padding-left:30px}
.tl::before{content:"";position:absolute;left:5px;top:6px;bottom:6px;width:1px;
  background:linear-gradient(180deg,var(--lumen),var(--brine),var(--lure))}
.tl .ev{position:relative;padding:0 0 26px}
.tl .ev::before{content:"";position:absolute;left:-29px;top:7px;width:11px;height:11px;border-radius:50%;
  background:var(--abyss);border:2px solid var(--lumen)}
.tl .ev.future::before{border-color:var(--lure)}
.tl .yr{font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;color:var(--lure);display:block;margin-bottom:3px}
.tl .ev .evtitle{margin:0 0 5px;font-family:var(--serif);font-size:19px;font-weight:400;color:var(--foam);letter-spacing:-.015em;text-transform:none;line-height:1.3}
.tl .ev p{margin:0;font-size:14.5px;color:#B4D2DC}

/* sources */
#sources{border-top:1px solid var(--hair);background:rgba(1,5,10,.6)}
ol.src{list-style:none;counter-reset:s;padding:0;margin:26px 0 0}
ol.src li{counter-increment:s;position:relative;padding:13px 0 13px 46px;border-bottom:1px solid rgba(133,170,185,.11);
  font-size:14.5px;line-height:1.55;color:#B4D2DC;scroll-margin-top:80px}
ol.src li::before{content:counter(s);position:absolute;left:0;top:14px;font-family:var(--mono);font-size:11px;
  color:var(--lumen);border:1px solid var(--hair);width:29px;height:23px;display:flex;align-items:center;
  justify-content:center;border-radius:2px}
ol.src li:target{background:rgba(79,227,193,.07)}
ol.src li:target::before{background:var(--lumen);color:var(--abyss);border-color:var(--lumen)}
ol.src a{word-break:break-word;font-family:var(--mono);font-size:12px;opacity:.75}
ol.src .t{color:var(--foam);display:block;margin-bottom:3px}
.disc{font-size:13.5px;color:var(--silt);border:1px solid var(--hair);padding:18px 20px;margin:34px 0 0;
  border-radius:2px;line-height:1.6;background:rgba(6,20,33,.5)}

:focus-visible{outline:2px solid var(--lumen);outline-offset:3px}
.vh{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:12px;top:-100px;z-index:100;font-family:var(--mono);font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;background:var(--lumen);color:var(--abyss);padding:10px 14px;border-radius:2px;text-decoration:none}
.skip:focus{top:12px}
/* 404 page */
.notfound{min-height:100vh;display:flex;flex-direction:column;justify-content:center}
.notfound .code{font-family:var(--mono);font-size:clamp(60px,12vw,120px);color:var(--lumen);letter-spacing:-.05em;line-height:1;margin:0 0 20px}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important} html{scroll-behavior:auto}
}
@media(max-width:760px){
  body{font-size:16px}
  main{padding-left:0;padding-bottom:80px}
  #rig{top:auto;bottom:0;left:0;right:0;width:100%;height:58px;flex-direction:row;
    justify-content:space-between;padding:0 12px;background:rgba(3,8,15,.93);
    border-top:1px solid var(--hair);backdrop-filter:blur(9px)}
  #rig .wire,#rig .bead{display:none}
  #gauge{display:flex;align-items:baseline;gap:8px;width:auto;padding:6px 10px;background:none;border:0}
  #dnum{font-size:17px}#dunit{margin:0}#dzone{border:0;margin:0;padding:0}
  #rig nav{display:none}
  #tosounder{writing-mode:horizontal-tb;margin:0;padding:8px 12px}
  .creature{display:none}
  .row>summary{grid-template-columns:1fr}
  .row .badges{grid-column:1}
}