:root{--bg:#f4f6fa;--card:#fff;--text:#111827;--muted:#5b6475;--line:#e2e6ee;--brand:#2f5bff;--ink:#fff;--ok:#127a3d;--warn:#8a5a00;--bad:#b42318;--okbg:#e3f6ea;--warnbg:#fff1d6;--badbg:#fde8e6;color-scheme:light dark}
@media(prefers-color-scheme:dark){:root{--bg:#0d1117;--card:#161b22;--text:#e6edf3;--muted:#9aa5b4;--line:#2a3140;--brand:#6c8cff;--ink:#0d1117;--ok:#5fd18a;--warn:#f0b24a;--bad:#ff8a80;--okbg:#12301f;--warnbg:#3a2b0b;--badbg:#3d1714}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:1rem/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;padding:0 max(1rem,env(safe-area-inset-right)) env(safe-area-inset-bottom) max(1rem,env(safe-area-inset-left))}
a{color:var(--brand)}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px}
.wrap{max-width:760px;margin:0 auto}
header.top{position:sticky;top:0;z-index:5;margin:0 -1rem;padding:env(safe-area-inset-top) 1rem 0;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;min-height:56px}
.brand{font-weight:800;font-size:1.15rem;text-decoration:none;color:var(--text)}
nav a{display:inline-block;padding:.75rem .6rem;text-decoration:none;color:var(--muted);font-weight:600}
nav a[aria-current]{color:var(--text)}
h1{font-size:clamp(1.6rem,6vw,2.2rem);line-height:1.15;margin:1.5rem 0 .4rem}
h2{font-size:1.25rem;margin:1.8rem 0 .6rem}
.lead{color:var(--muted);margin:0 0 1rem}
.cards{display:grid;gap:.75rem;grid-template-columns:1fr}
@media(min-width:620px){.cards{grid-template-columns:1fr 1fr}}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:1rem;text-decoration:none;color:inherit;min-height:44px}
a.card:active{transform:scale(.99)}
.card h3{margin:0;font-size:1rem;color:var(--muted);font-weight:600}
.card .v{font-size:2rem;font-weight:800;margin:.2rem 0;font-variant-numeric:tabular-nums}
.card .m{font-size:.9rem;color:var(--muted)}
.pill{display:inline-block;font-size:.8rem;font-weight:700;border-radius:999px;padding:.15rem .6rem}
.live{background:var(--okbg);color:var(--ok)}.delayed{background:var(--warnbg);color:var(--warn)}.offline{background:var(--badbg);color:var(--bad)}
.panel{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:1.25rem;margin:1rem 0}
.reading{font-size:clamp(3rem,16vw,5rem);font-weight:800;line-height:1;margin:.5rem 0 .2rem;font-variant-numeric:tabular-nums}
.sub{color:var(--muted);font-size:1.15rem;margin:0 0 .75rem}
.trend{font-weight:700;margin:.5rem 0}
.notice{border-radius:12px;padding:.7rem .9rem;margin:.75rem 0;background:var(--warnbg);color:var(--warn);font-weight:600}
.notice.bad{background:var(--badbg);color:var(--bad)}
.safety{border-left:4px solid var(--warn);padding:.2rem 0 .2rem .8rem;color:var(--muted);font-size:.95rem;margin:1rem 0}
.row{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;margin:.75rem 0}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.seg label{position:relative;padding:.7rem 1rem;min-height:48px;display:flex;align-items:center;cursor:pointer;font-weight:600}
.seg input{position:absolute;opacity:0}
.seg input:checked+span{color:var(--brand)}
.seg label:has(input:checked){background:color-mix(in srgb,var(--brand) 15%,transparent);color:var(--brand)}
.seg label:has(input:focus-visible){outline:3px solid var(--brand);outline-offset:-3px}
button,.btn{font:inherit;font-weight:700;min-height:48px;padding:.6rem 1.1rem;border-radius:12px;border:0;background:var(--brand);color:var(--ink);cursor:pointer;text-decoration:none;display:inline-flex;align-items:center}
button.ghost{background:transparent;color:var(--brand);border:1px solid var(--line)}
button[aria-busy=true]{opacity:.6}
.chart{width:100%;min-height:230px}
.chart svg{display:block;width:100%;height:auto;font-size:11px}
.chart text{fill:var(--muted)}.chart .g{stroke:var(--line)}.chart .l{fill:none;stroke:var(--brand);stroke-width:2.2;stroke-linejoin:round;stroke-linecap:round}.chart .gap{fill:none;stroke:var(--brand);stroke-width:2.2;stroke-dasharray:1 6;stroke-linecap:round;opacity:.7}
.cap{font-size:.85rem;color:var(--muted);margin:.2rem 0 0}
.skel{color:transparent;background:linear-gradient(90deg,var(--line),transparent,var(--line));background-size:200% 100%;animation:sh 1.2s infinite;border-radius:8px}
@keyframes sh{to{background-position:-200% 0}}
details{margin:1rem 0;color:var(--muted)}summary{min-height:44px;display:flex;align-items:center;cursor:pointer;font-weight:600}
#offline,#consent{position:fixed;left:0;right:0;z-index:10;padding:.8rem 1rem}
#offline{top:0;background:var(--badbg);color:var(--bad);text-align:center;font-weight:700;padding-top:calc(.8rem + env(safe-area-inset-top))}
#consent{bottom:0;background:var(--card);border-top:1px solid var(--line);padding-bottom:calc(.8rem + env(safe-area-inset-bottom))}
#consent .wrap{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center}#consent p{flex:1 1 260px;margin:0;font-size:.95rem}
[hidden]{display:none!important}
.prose{padding-bottom:1rem}.prose .card{margin:.75rem 0}.prose li{margin:.3rem 0}
footer{color:var(--muted);font-size:.85rem;padding:1.5rem 0 2rem;border-top:1px solid var(--line);margin-top:2rem}
footer p{margin:.5rem 0}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

body{background:linear-gradient(180deg,color-mix(in srgb,var(--brand) 14%,var(--bg)) 0,var(--bg) 440px) no-repeat,var(--bg)}
.brand{display:flex;align-items:center;gap:.5rem}.brand img{border-radius:8px;display:block}
.hero{margin:1rem 0;padding:1.4rem 1.2rem 3rem;border-radius:24px;color:#fff;background:linear-gradient(135deg,#2f5bff,#00a3c4);position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:34px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='34' viewBox='0 0 120 34'%3E%3Cpath d='M0 17c20-14 40-14 60 0s40 14 60 0v17H0z' fill='white' fill-opacity='.2'/%3E%3C/svg%3E") repeat-x}
.hero h1{margin:.2rem 0;color:#fff}.hero p{margin:0;opacity:.92;font-size:1.05rem}
.card{border-left:6px solid var(--line);box-shadow:0 1px 3px rgba(0,0,0,.06)}
.card[data-status=live]{border-left-color:var(--ok)}.card[data-status=delayed]{border-left-color:var(--warn)}.card[data-status=offline]{border-left-color:var(--bad)}
.card .v{color:var(--brand)}
.card .trend-s,.trend{font-weight:700}
.card .trend-s.up,.trend.up{color:var(--ok)}.card .trend-s.dn,.trend.dn{color:var(--warn)}.card .trend-s.flat,.trend.flat{color:var(--muted)}
.panel.main{background:linear-gradient(160deg,color-mix(in srgb,var(--brand) 13%,var(--card)),var(--card))}
.reading{color:var(--brand)}
.pill{font-size:.9rem;padding:.25rem .75rem}
.safety{background:var(--warnbg);border:0;border-left:4px solid var(--warn);border-radius:12px;padding:.7rem .9rem;color:var(--text);display:flex;gap:.6rem}
.safety::before{content:"\26A0";color:var(--warn);font-size:1.2rem;line-height:1.3}
button,.btn{background:linear-gradient(135deg,var(--brand),color-mix(in srgb,var(--brand) 60%,#00c2d4))}
button.ghost{background:transparent}
.install{display:flex;gap:.6rem;align-items:center;background:var(--card);border:1px solid var(--line);border-left:6px solid var(--brand);border-radius:16px;padding:.7rem .9rem;margin:.75rem 0}
.install div{flex:1;display:flex;flex-direction:column;font-size:.9rem;color:var(--muted)}.install strong{color:var(--text);font-size:1rem}
dialog{border:0;border-radius:20px;padding:1.2rem 1.4rem;max-width:min(92vw,420px);background:var(--card);color:var(--text)}dialog::backdrop{background:#0008}
dialog li{margin:.5rem 0}
.prose h3{margin:1.8rem 0 .6rem}
.prose .hero{margin-top:1rem}
.feature{display:flex;gap:1rem;align-items:flex-start;margin:.9rem 0!important}.feature>div{flex:1}.feature h3{margin:.1rem 0 .4rem!important;font-size:1.15rem;color:var(--text)!important}
.ico{flex:none;width:54px;height:54px;border-radius:16px;display:grid;place-items:center;background:color-mix(in srgb,var(--c) 16%,transparent);color:var(--c)}
.ico svg{width:30px;height:30px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.cta{display:flex;flex-wrap:wrap;gap:.7rem;margin:1.5rem 0}
.ico.big{width:40px;height:40px}

.back{display:inline-block;padding:.6rem 0 0;text-decoration:none;font-weight:600}
.label{text-transform:uppercase;letter-spacing:.07em;font-size:.75rem;font-weight:700;color:var(--muted);margin-top:.6rem}
.panel .trend:not(:empty){display:inline-block;padding:.3rem .8rem;border-radius:999px;background:color-mix(in srgb,currentColor 12%,transparent)}
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:.6rem;margin:1rem 0}
.tile{background:color-mix(in srgb,var(--brand) 8%,var(--card));border:1px solid var(--line);border-radius:14px;padding:.7rem .9rem}
.tile span{display:block;font-size:.8rem;color:var(--muted)}.tile strong{font-size:1.25rem;font-variant-numeric:tabular-nums}
.ch{display:flex;align-items:center;gap:.5rem;margin:0 0 .6rem!important;font-size:1.1rem}
.dot{width:12px;height:12px;border-radius:50%;background:var(--brand)}.dot.alt{background:#00a3c4}
.panel .lead{margin:.2rem 0 0;font-size:.95rem}
.card.last h3::after{content:"Last viewed";margin-left:.5rem;font-size:.7rem;font-weight:700;color:var(--brand);background:color-mix(in srgb,var(--brand) 14%,transparent);padding:.1rem .5rem;border-radius:999px;vertical-align:middle}
.warn-s{color:var(--warn)!important;font-weight:600}
.tbl{width:100%;border-collapse:collapse;font-size:.9rem}.tbl th,.tbl td{text-align:left;padding:.5rem;border-bottom:1px solid var(--line);white-space:nowrap}.tbl th{color:var(--muted);font-size:.8rem}.scroll{overflow-x:auto}
.chart{position:relative}.chart svg{touch-action:pan-y;cursor:crosshair}
.chart .xh{stroke:var(--muted);stroke-width:1;stroke-dasharray:4 3}.chart .dotc{fill:var(--brand);stroke:var(--card);stroke-width:2}
.tip{position:absolute;pointer-events:none;background:var(--card);color:var(--text);border:1px solid var(--line);border-radius:10px;padding:.4rem .6rem;font-size:.85rem;line-height:1.4;box-shadow:0 4px 14px rgba(0,0,0,.2);white-space:nowrap;z-index:2}.tip span{color:var(--muted)}
.tbl .wrapcell{white-space:normal;min-width:16rem}code{font-size:.85em}
.param{padding:.7rem 0;border-bottom:1px solid var(--line)}.param:last-child{border:0}.param .ph{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}.param p{margin:.3rem 0 0;color:var(--muted);font-size:.92rem}
details.fold>summary{font-weight:700;font-size:1.05rem;color:var(--text);margin:0}details.fold{color:var(--text)}
details.fold.panel{padding:.4rem 1.25rem}details.fold.panel[open]{padding-bottom:1.1rem}
details.fold details.fold{margin:.6rem 0}details.fold details.fold>summary{font-size:.95rem;color:var(--muted)}
details.fold>summary .cap{font-weight:500;margin-left:.4rem}
details.fold>summary{list-style:none;justify-content:space-between;gap:.5rem}details.fold>summary::-webkit-details-marker{display:none}details.fold>summary::after{content:"";flex:none;width:.55rem;height:.55rem;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg);margin:0 .2rem .2rem 0;transition:transform .15s}details.fold[open]>summary::after{transform:rotate(-135deg);margin:.2rem .2rem 0 0}
.guide .panel{margin:1rem 0}.guide h2{margin-top:0}.guide h3{margin:1.2rem 0 .4rem}
.guide .tbl td,.guide .tbl th{white-space:normal;vertical-align:top;min-width:6.5rem}
.toc{display:flex;flex-direction:column}.toc strong{margin-bottom:.3rem}.toc a{padding:.45rem 0;text-decoration:none;font-weight:600;border-top:1px solid var(--line)}.toc strong+a{border-top:0}
.guide section{scroll-margin-top:70px}.guide .safety{margin:1rem 0 0}
@media(max-width:420px){nav a{padding:.75rem .4rem;font-size:.95rem}.brand{font-size:1.05rem}}
@media(max-width:560px){
.guide .tbl,.guide .tbl tbody,.guide .tbl tr,.guide .tbl td{display:block;width:100%}.guide .tbl thead{display:none}
.guide .tbl tr{padding:.7rem 0;border-bottom:1px solid var(--line)}.guide .tbl tr:last-child{border:0}
.guide .tbl td{border:0;padding:.2rem 0;min-width:0}
.guide .tbl td::before{content:attr(data-label);display:block;font-size:.72rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
.guide .tbl td:first-child{font-weight:700}.guide .tbl td:first-child::before{font-weight:700}
}
@media(max-width:420px){.brand img{display:none}.brand{white-space:nowrap}nav a{padding:.75rem .35rem;font-size:.9rem}}
@media(max-width:340px){.brand{font-size:.95rem}nav a{padding:.75rem .25rem;font-size:.82rem}}

/* boat air draft + fit warnings */
.boat{background:var(--card);border:1px solid var(--line);border-radius:12px;margin:.75rem 0;padding:0 .9rem}
.boat summary{min-height:48px;display:flex;align-items:center;font-weight:700;color:var(--brand);cursor:pointer}
.boatf{display:flex;flex-wrap:wrap;gap:.7rem 1rem;align-items:center;padding-bottom:.5rem}
.boatf label{display:flex;align-items:center;gap:.4rem;font-weight:600}
.boatf input,.boatf select{font:inherit;min-height:44px;padding:.3rem .5rem;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--text);width:5.5rem}
.boatf select{width:auto}
.boat .hint{color:var(--muted);font-size:.85rem;margin:.2rem 0 .8rem}
.fit{display:flex;flex-direction:column;gap:.25rem;border-radius:14px;padding:1rem;margin:.75rem 0;font-weight:600}
.fit strong{font-size:1.35rem;line-height:1.2}
.fit.no{background:var(--bad);color:#fff;border:4px solid #000;box-shadow:0 0 0 3px var(--bad);animation:fitpulse 1.6s ease-in-out infinite}
.fit.no strong{font-size:1.9rem;letter-spacing:.02em}
.fit.close{background:var(--warnbg);color:var(--text);border:3px dashed var(--warn)}
.fit.close strong{color:var(--warn)}
.fit.ok{background:var(--okbg);color:var(--ok)}.fit.ok strong{font-size:1.1rem}
.fit.unknown{background:var(--card);color:var(--muted);border:2px dotted var(--muted)}.fit.unknown strong{font-size:1.1rem}
.cfit{margin:-1rem -1rem .6rem -1rem;padding:.4rem 1rem;font-size:.9rem;border-radius:10px 10px 0 0}
.cfit.no{background:var(--bad);color:#fff;font-size:1.05rem;letter-spacing:.02em}
.cfit.close{background:var(--warnbg);color:var(--warn);border-bottom:2px dashed var(--warn)}
.cfit.ok{background:var(--okbg);color:var(--ok)}
.cfit.unknown{color:var(--muted);border-bottom:2px dotted var(--muted)}
.card[data-fit=no]{border:3px solid var(--bad);border-left-width:6px}
.card[data-fit=close]{border:3px dashed var(--warn);border-left:6px solid var(--warn)}
@keyframes fitpulse{50%{box-shadow:0 0 0 7px color-mix(in srgb,var(--bad) 35%,transparent)}}
@media(prefers-reduced-motion:reduce){.fit.no{animation:none}}
@media(prefers-color-scheme:dark){.fit.no,.cfit.no{background:#c62d1f;color:#fff}.fit.no{border-color:#fff}}
.boatf label.wide{width:100%}.boatf label.wide input{width:100%;max-width:18rem}
.boatf .btns{display:flex;gap:.6rem;width:100%}.boatf .btns button{min-height:48px;padding:.5rem 1.4rem}
.guide details.fold.panel>summary{min-height:52px;display:flex;align-items:center;cursor:pointer}
.guide details.fold.panel>summary h2{margin:0;font-size:1.15rem}
.guide details.fold.panel[open]>summary{margin-bottom:.4rem}
.guide-ctl{margin:.5rem 0}.guide-ctl button{min-height:44px}
.achart{margin:.5rem 0 .2rem}.achart .ra{fill:none;stroke:var(--bad);stroke-width:1.6;stroke-linejoin:round}
.achart .ka{fill:none;stroke:var(--brand);stroke-width:2;stroke-linejoin:round}
.achart .spk{fill:var(--card);stroke:var(--bad);stroke-width:1.8}
.achart .gapband{fill:var(--warn);opacity:.16}
.legend{display:flex;flex-wrap:wrap;gap:.3rem .9rem;align-items:center}
.lg{display:inline-block;width:1.1rem;height:.5rem;border-radius:3px;margin-right:.3rem;vertical-align:middle}
.lg.r{background:var(--bad)}.lg.k{background:var(--brand)}.lg.s{width:.7rem;height:.7rem;border-radius:50%;border:2px solid var(--bad)}.lg.b{background:var(--warn);opacity:.4}
.zoomctl{display:flex;flex-wrap:wrap;gap:.4rem;margin:.6rem 0 .2rem}.zoomctl button{min-height:44px;padding:.4rem .8rem}
.zlabel{margin:.2rem 0}.achart .selbox{fill:var(--brand);opacity:.18;stroke:var(--brand)}.achart svg{user-select:none}