:root{--canal:#173F5F;--deep:#0F2A40;--stone:#EDE6D6;--gate:#F0B429;--water:#78C1E0;--rust:#B5532D;--ink:#17222C;--soft:#56636E;--disp:'Josefin Sans',system-ui,sans-serif;--body:'Libre Franklin',system-ui,sans-serif;--mono:'PT Mono',ui-monospace,monospace}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--stone);color:var(--ink);font:400 1.04rem/1.7 var(--body)}
a{color:var(--rust);text-underline-offset:3px}a:hover{color:var(--canal)}
:focus-visible{outline:3px solid var(--gate);outline-offset:3px}
.skip{position:absolute;left:-999px;top:0;background:var(--canal);color:var(--stone);padding:.6rem 1rem;z-index:9}.skip:focus{left:1rem}
.wrap{width:min(1120px,100% - 2.5rem);margin-inline:auto}
h1,h2,h3{font-family:var(--disp);font-weight:700;line-height:1.08;margin:0 0 .6em}
h1{font-size:clamp(2.5rem,5.6vw,4.1rem);text-transform:uppercase;letter-spacing:.01em}h1 span{display:block;color:var(--water);text-transform:none;font-weight:400}
h2{font-size:clamp(1.7rem,3.2vw,2.5rem)}h3{font-size:1.2rem}
.level{font:400 .78rem/1.4 var(--mono);text-transform:uppercase;letter-spacing:.1em;color:var(--canal);margin:0 0 1rem;display:inline-flex;align-items:center;gap:.6rem}
.level::before{content:"";width:28px;height:10px;background:linear-gradient(var(--gate) 0 50%,var(--water) 50%);border:1px solid var(--canal)}
.prose{max-width:62ch}.prose p{margin:0 0 1rem}
.lock{background:var(--canal);border-bottom:4px solid var(--gate)}
.lock__in{display:flex;align-items:center;justify-content:space-between;padding:1rem 0;gap:1rem}
.brand{display:flex;align-items:center;gap:.6rem;color:var(--stone);text-decoration:none;font:700 1.6rem/1 var(--disp);letter-spacing:.03em}.brand svg{width:28px;height:28px}
.lock nav{display:flex;gap:1.4rem}.lock nav a{color:#C9DCE8;text-decoration:none;font-weight:600}.lock nav a:hover{color:var(--gate)}
.hero{padding:4.5rem 0 3.5rem;background:linear-gradient(180deg,var(--deep),var(--canal));color:var(--stone)}
.hero .level{color:var(--water)}.hero a{color:var(--gate)}
.hero__grid{display:grid;grid-template-columns:1.45fr 1fr;gap:3rem;align-items:center}
.lede{font-size:1.12rem;max-width:58ch;color:#D6E4EE}
.board{background:var(--stone);color:var(--ink);padding:1.5rem;border-radius:4px;border-left:10px solid var(--gate)}
.board h2{font-size:1.5rem;text-transform:uppercase;letter-spacing:.04em;color:var(--canal)}
.board ul{list-style:none;margin:0 0 1rem;padding:0}.board li{padding:.5rem 0;border-bottom:1px solid #D2C8B2;display:flex;gap:.6rem;align-items:baseline;flex-wrap:wrap}
.board b{font-family:var(--disp);min-width:4rem}
.dot{width:12px;height:12px;border-radius:50%;display:inline-block;flex:none}.dot.c{background:var(--rust)}.dot.h{background:var(--gate)}.dot.o{background:var(--water)}
.board p{font:400 .76rem var(--mono);color:var(--soft);margin:0}
.canal{padding:4.5rem 0}
.canal__grid{display:grid;grid-template-columns:1.3fr 1fr;gap:3rem;align-items:center}
.sluice{margin:0;background:#fff;border:2px solid var(--canal);border-radius:4px;padding:1rem}
.sluice svg{width:100%;height:auto;display:block}.sluice figcaption{font-size:.9rem;color:var(--soft);margin-top:.6rem}
.sluice .bank{fill:#D9CFB8}.sluice .main{fill:var(--canal)}.sluice .side{fill:#3E7FA6}
.sluice .flow,.sluice .sideflow{fill:none;stroke:var(--water);stroke-width:2.5;stroke-linecap:round}
.sluice .pier{fill:#7D7466}.sluice .gate{fill:var(--gate);stroke:#8A6510;stroke-width:2}
.sluice .lbl{font:400 12px var(--mono);fill:var(--deep)}.sluice .main ~ .lbl{fill:var(--deep)}
.sluice .gauge rect{fill:var(--stone);stroke:var(--canal);stroke-width:2}.sluice .gh{font:400 11px var(--mono);fill:var(--canal);letter-spacing:.08em}
.sluice .row circle{fill:none;stroke:var(--canal);stroke-width:2}.sluice .row text{font:400 12px var(--body);fill:var(--ink)}
.sluice .on circle{fill:var(--gate)}.sluice .on text{font-weight:600}
@media (prefers-reduced-motion:no-preference){.sluice .flow{animation:run 4s linear infinite}.sluice .f2{animation-duration:6s}.sluice .sideflow{animation:down 3s linear infinite}.sluice .gate{animation:lift 1.6s ease-out both}}
@keyframes run{to{transform:translateX(80px)}}
@keyframes down{to{transform:translateY(40px)}}
@keyframes lift{from{transform:translateY(34px)}to{transform:none}}
.flowtable{padding:4.5rem 0;background:#E2D9C4}
.tbl-wrap{overflow-x:auto;margin-top:1.5rem;border:2px solid var(--canal);background:#fff}
.tbl{border-collapse:collapse;width:100%;min-width:680px}
.tbl caption{text-align:left;padding:.8rem 1rem;font:400 .8rem var(--mono);color:var(--soft);border-bottom:2px solid var(--canal)}
.tbl th,.tbl td{padding:.8rem 1rem;text-align:left;vertical-align:top;border-bottom:1px solid #E2D9C4}
.tbl thead th{font:400 .76rem var(--mono);text-transform:uppercase;background:var(--canal);color:var(--stone)}
.tbl thead th:nth-child(2){border-bottom:4px solid var(--rust)}.tbl thead th:nth-child(3){border-bottom:4px solid var(--gate)}.tbl thead th:nth-child(4){border-bottom:4px solid var(--water)}
.tbl tbody th{font-family:var(--disp);font-weight:600}
.flood{padding:4.5rem 0;background:var(--deep);color:var(--stone)}.flood .level{color:var(--water)}
.risk-list{list-style:none;margin:1.5rem 0 0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}
.risk-list li{background:var(--canal);padding:1.2rem;border-radius:4px;border-top:4px solid var(--gate)}
.risk-list span{font:400 .74rem var(--mono);color:var(--water)}.risk-list h3{margin-top:.4rem}.risk-list p{margin:0;font-size:.95rem;color:#C9DCE8}
.lockhouse{padding:4.5rem 0}
.lockhouse__grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem}
.reading{list-style:none;margin:0;padding:0}.reading li{border-top:2px solid var(--canal)}
.reading a{display:block;padding:.9rem 0;text-decoration:none;color:var(--ink)}.reading span{display:block;font:400 .74rem var(--mono);text-transform:uppercase;color:var(--rust)}
.reading strong{font:700 1.3rem var(--disp)}.reading a:hover strong{text-decoration:underline}
.page{padding:3.5rem 0 4.5rem}.page article{max-width:68ch}.page h2{font-size:1.55rem;margin-top:2rem}.page .meta{font:400 .82rem var(--mono);color:var(--soft)}
.page ul{padding-left:1.2rem}.page li{margin-bottom:.5rem}
.backlink{display:inline-block;margin-top:2rem;font-weight:600}
.foot{background:var(--canal);color:#C9DCE8;padding:2.5rem 0;font-size:.9rem;border-top:4px solid var(--gate)}
.foot nav{display:flex;flex-wrap:wrap;gap:1.2rem;margin-bottom:1rem}.foot a{color:var(--stone)}
@media (max-width:860px){.hero__grid,.canal__grid,.lockhouse__grid{grid-template-columns:1fr}.hide-sm{display:none}}