/* BATHYON — bathyon.io
   One stylesheet for every page. The palette is the mark's own: a sunset sky over a sea that runs
   turquoise at the surface into black at depth. Paper is a chart sheet. */
:root{
  --paper:#f6f4ee; --paper-2:#eeebe2; --card:#fffdf8;
  --ink:#0e2230; --ink-2:#2c4352; --muted:#5a6d79; --line:#dcd8cc; --line-2:#c9c4b5;
  --sea-950:#040f18; --sea-900:#061824; --sea-800:#0a2636; --sea-700:#0d3a52; --sea-600:#0f4f6b;
  --teal:#1e8ba4; --aqua:#41c6cf; --foam:#bfe9ec;
  --sun:#f39a33; --sun-deep:#e85a2b; --sun-red:#f0553a;
  --serif:'Instrument Serif',Georgia,'Times New Roman',serif;
  --sans:'IBM Plex Sans','Segoe UI',system-ui,-apple-system,'Helvetica Neue',Arial,sans-serif;
  --mono:'IBM Plex Mono',Consolas,'SFMono-Regular',Menlo,monospace;
  --max:1200px; --gut:clamp(20px,4vw,48px); --r:10px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:92px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg{display:block;max-width:100%}
img{height:auto}
a{color:inherit;text-underline-offset:4px}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,figure,ul,ol,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:3px solid var(--sun-deep);outline-offset:4px;border-radius:3px}
::selection{background:var(--sun);color:var(--sea-950)}
.wrap{width:min(var(--max),100% - 2*var(--gut));margin-inline:auto}
.skip{position:absolute;left:12px;top:-80px;z-index:100;background:var(--sun);color:var(--sea-950);padding:10px 14px;border-radius:6px;font-weight:600;text-decoration:none}
.skip:focus{top:12px}

/* ---------- type ---------- */
h1,h2,.display{font-family:var(--serif);font-weight:400;letter-spacing:-.015em;line-height:1.02}
h1{font-size:clamp(46px,6.6vw,96px)}
h2{font-size:clamp(34px,4.4vw,60px);line-height:1.05}
h3{font-size:22px;font-weight:600;letter-spacing:-.01em;line-height:1.25}
h3+p{margin-top:8px}
h1 em,h2 em{font-style:italic;color:var(--sun-deep)}
.dark h1 em,.dark h2 em{color:var(--sun)}
p{color:var(--ink-2)}
.lead{font-size:clamp(18px,1.55vw,21px);line-height:1.6;color:var(--ink-2);max-width:62ch}
.mono{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase}
.small{font-size:14px;color:var(--muted)}
strong{font-weight:600}

/* chainage label: every section is a station on the line */
.ch{display:inline-flex;align-items:center;gap:12px;font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:22px}
.ch::before{content:'';width:34px;height:1px;background:currentColor}
.ch b{font-weight:500;color:var(--sun-deep)}
.dark .ch{color:#8fb0bd}.dark .ch b{color:var(--sun)}

/* ---------- header ---------- */
.site-head{position:sticky;top:0;z-index:50;background:rgba(246,244,238,.92);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.nav{height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand img{width:40px;height:40px;border-radius:9px}
.brand-name{font-weight:700;font-size:21px;letter-spacing:.14em;line-height:1}
.brand-name small{display:block;font-family:var(--mono);font-weight:400;font-size:9px;letter-spacing:.2em;color:var(--muted);margin-top:6px}
.navlinks{display:flex;align-items:center;gap:6px;font-size:15px}
.navlinks a{text-decoration:none;padding:9px 13px;border-radius:7px;color:var(--ink-2);transition:background .15s,color .15s}
.navlinks a:hover{background:var(--paper-2);color:var(--ink)}
.navlinks a[aria-current=page]{position:relative;color:var(--ink);font-weight:600}
.navlinks a[aria-current=page]::after{content:'';position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--sun-deep)}
.navlinks .lang{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.navlinks .cta{margin-left:10px;background:var(--ink);color:var(--paper);padding:10px 18px;font-weight:500}
.navlinks .cta:hover{background:var(--sea-700);color:#fff}
.menu-btn{display:none;background:none;border:1px solid var(--line-2);border-radius:7px;padding:8px 13px;font-size:14px;cursor:pointer}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:12px;padding:14px 22px;border-radius:8px;text-decoration:none;font-weight:500;font-size:15.5px;border:1px solid transparent;transition:transform .15s,background .15s,border-color .15s;cursor:pointer}
.btn:hover{transform:translateY(-1px)}
.btn .arr{font-family:var(--mono);transition:transform .15s}
.btn:hover .arr{transform:translateX(3px)}
.btn-sun{background:var(--sun);color:var(--sea-950)}
.btn-sun:hover{background:#ffad4d}
.btn-ink{background:var(--ink);color:var(--paper)}
.btn-ink:hover{background:var(--sea-700)}
.btn-ghost{border-color:rgba(255,255,255,.28);color:#e9f3f5}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.06)}
.btn-line{border-color:var(--line-2);color:var(--ink)}
.btn-line:hover{border-color:var(--ink)}
.textlink{font-weight:500;text-decoration:underline;text-decoration-color:var(--sun-deep);text-decoration-thickness:2px}
.textlink:hover{color:var(--sun-deep)}
.actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ---------- dark sections: the water column ---------- */
.dark{background:var(--sea-900);color:#e6f0f3}
.dark p{color:#a9c1cb}
.dark .lead{color:#c3d6dd}
.dark h3{color:#f2f8f9}
.sea{position:relative;background:
  radial-gradient(1200px 520px at 78% -10%,rgba(65,198,207,.20),transparent 60%),
  linear-gradient(180deg,#0d3d55 0%,#0a2c40 34%,#061a27 72%,var(--sea-950) 100%)}
/* a chart graticule: one cross every 96 px */
.sea::before,.grat::before{content:'';position:absolute;inset:0;pointer-events:none;opacity:.5;background-size:96px 96px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='96' height='96'%3E%3Cpath d='M48 43v10M43 48h10' stroke='%23ffffff' stroke-opacity='.17' stroke-width='1'/%3E%3C/svg%3E")}
.grat{position:relative}
.grat::before{opacity:1;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='96' height='96'%3E%3Cpath d='M48 43v10M43 48h10' stroke='%230e2230' stroke-opacity='.13' stroke-width='1'/%3E%3C/svg%3E")}
.sea>*,.grat>*{position:relative}
/* the sonar rings live in their own clipped layer, so the hero screenshot may hang out of the section */
.sea>.sea-deco{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.sonar{position:absolute;right:-120px;bottom:-260px;width:760px;height:760px;opacity:.55}
.sonar circle{fill:none;stroke:var(--aqua);stroke-width:1}
.sonar .echo{fill:var(--sun-red);stroke:none}

/* ---------- hero ---------- */
.hero{padding:clamp(56px,8vw,112px) 0 0}
.hero-plain{padding-bottom:clamp(56px,8vw,112px)}   /* a hero with no picture under it */
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(28px,5vw,80px);align-items:end}
.hero h1{color:#f4fafb}
.hero .lead{margin-top:6px}
.hero-side{padding-bottom:8px}
.hero-side .actions{margin-top:28px}
.hero-note{margin-top:16px;font-size:.84rem;line-height:1.5;opacity:.72;max-width:44ch}
.hero-shot{margin-top:clamp(40px,6vw,76px);margin-bottom:-120px;position:relative;z-index:2}
.hero-foot{padding:150px 0 28px;background:var(--paper)}
.page-hero{padding:clamp(56px,7vw,100px) 0 clamp(48px,6vw,84px)}
.page-hero .hero-grid{align-items:center}
.page-hero h1{font-size:clamp(44px,5.8vw,84px)}
.crumb{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:#8fb0bd;margin-bottom:26px}
.crumb a{color:inherit;text-decoration:none}.crumb a:hover{color:#fff}
/* shortcuts to the parts of a long product page */
.jump{border-bottom:1px solid var(--line);background:var(--paper)}
.jump .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;padding-top:16px;padding-bottom:16px}
.jump span{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-right:8px}
.jump a{font-size:14px;font-weight:500;color:var(--ink-2);text-decoration:none;padding:7px 14px;border:1px solid var(--line-2);border-radius:99px;background:var(--card)}
.jump a:hover,.jump a:focus-visible{border-color:var(--sun-deep);color:var(--ink)}

/* ---------- screenshots ---------- */
.shot{position:relative;border-radius:var(--r);overflow:hidden;background:#cfd3d6;border:1px solid rgba(14,34,48,.18);
  box-shadow:0 1px 0 rgba(255,255,255,.5) inset,0 30px 60px -28px rgba(4,15,24,.55),0 10px 22px -14px rgba(4,15,24,.4)}
.dark .shot{border-color:rgba(255,255,255,.14);box-shadow:0 40px 90px -30px rgba(0,0,0,.75)}
.shot img{width:100%;cursor:zoom-in}
.shot video{display:block;width:100%;height:auto;background:#cfd3d6}
.shot.paper{background:#fff}
figure.fig figcaption,.cap{font-size:13.5px;color:var(--muted);margin-top:12px;line-height:1.5;max-width:70ch}
.cap b{color:var(--ink-2);font-weight:600}
.dark .cap{color:#86a3af}.dark .cap b{color:#c3d6dd}
.tag{display:inline-block;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;padding:4px 9px;border-radius:99px;border:1px solid var(--line-2);color:var(--muted);vertical-align:middle}
.dark .tag{border-color:rgba(255,255,255,.22);color:#9dbac6}
.tag.sun{border-color:var(--sun-deep);color:var(--sun-deep)}
.dark .tag.sun{border-color:var(--sun);color:var(--sun)}

/* ---------- sections ---------- */
section{position:relative}
.sec{padding:clamp(72px,9vw,132px) 0}
.sec-tight{padding:clamp(56px,6vw,88px) 0}
.sec-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.8fr);gap:clamp(24px,5vw,72px);align-items:end;margin-bottom:clamp(40px,5vw,68px)}
.sec-head p{font-size:18px}
.alt{background:var(--paper-2)}
hr.rule{border:0;border-top:1px solid var(--line);margin:0}

/* intro: the need */
.need{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(28px,6vw,96px);align-items:start}
.need blockquote{margin:0;font-family:var(--serif);font-size:clamp(26px,3vw,40px);line-height:1.18;letter-spacing:-.01em;color:var(--ink)}
.need blockquote span{color:var(--sun-deep)}
.need .body p+p{margin-top:16px}
.who{margin-top:26px;padding-top:18px;border-top:1px solid var(--line-2)}
.who-name{font-family:var(--serif);font-size:clamp(24px,2.4vw,32px);line-height:1.15;color:var(--ink)}
.who .mono{margin-top:8px}
.who-link{margin-top:14px;font-size:.95rem}

/* workflow: stations along the line */
.steps{position:relative;display:grid;gap:clamp(56px,7vw,104px)}
.step{display:grid;grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr);gap:clamp(24px,4.5vw,64px);align-items:center}
.step:nth-child(even){grid-template-columns:minmax(0,1.22fr) minmax(0,.78fr)}
.step:nth-child(even) .step-text{order:2}
.step-n{display:flex;align-items:baseline;gap:14px;margin-bottom:14px}
.step-n i{font-style:normal;font-family:var(--serif);font-size:64px;line-height:.9;color:var(--sun-deep)}
.step-n span{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.step h3{font-family:var(--serif);font-weight:400;font-size:clamp(28px,3vw,40px);letter-spacing:-.01em;line-height:1.08;margin-bottom:14px}
.step p+p{margin-top:12px}
.meas{margin-top:20px;border-left:2px solid var(--sun-deep);padding:2px 0 2px 16px;font-family:var(--mono);font-size:13px;line-height:1.6;color:var(--ink-2)}
.meas b{color:var(--ink);font-weight:500}
.dark .meas{color:#b9cfd7;border-color:var(--sun)}.dark .meas b{color:#fff}

/* product cards */
.products{display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,3vw,36px)}
.pcard{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;text-decoration:none;transition:transform .2s,box-shadow .2s,border-color .2s}
.pcard:hover{transform:translateY(-4px);box-shadow:0 28px 50px -30px rgba(4,15,24,.45);border-color:var(--line-2)}
.pcard-img{aspect-ratio:16/10;overflow:hidden;background:#cfd3d6;border-bottom:1px solid var(--line)}
.pcard-img img{width:100%;height:100%;object-fit:cover;object-position:left top;transition:transform .5s}
.pcard:hover .pcard-img img{transform:scale(1.03)}
.pcard-body{padding:28px 30px 30px;display:flex;flex-direction:column;gap:12px;flex:1}
.pcard h3{font-family:var(--serif);font-weight:400;font-size:38px;letter-spacing:-.01em;line-height:1}
.pcard h3 span{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:10px}
.pcard ul{display:grid;gap:7px;margin-top:4px;font-size:15px;color:var(--ink-2)}
.pcard li{padding-left:20px;position:relative}
.pcard li::before{content:'';position:absolute;left:0;top:.72em;width:10px;height:1px;background:var(--sun-deep)}
.pcard .go{margin-top:auto;padding-top:14px;font-weight:600;font-size:15px;color:var(--sun-deep)}

/* capabilities: two columns of what each program does */
.capt{font-family:var(--serif);font-weight:400;font-size:clamp(30px,3vw,40px);letter-spacing:-.01em;line-height:1;margin-bottom:18px}
.capt span{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--sun-deep);margin-bottom:10px}
.caps{display:grid;gap:0}
.caps li{border-top:1px solid var(--line-2);padding:13px 0 13px 22px;position:relative;font-size:15px;line-height:1.55;color:var(--ink-2)}
.caps li::before{content:'';position:absolute;left:0;top:1.35em;width:11px;height:1px;background:var(--sun-deep)}
.caps li b{display:block;color:var(--ink);font-weight:600;margin-bottom:2px}
.caps li:last-child{border-bottom:1px solid var(--line-2)}
/* the workflow as a numbered list */
.flow{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:clamp(16px,2.4vw,32px);counter-reset:none}
.flow li{display:grid;gap:10px;border-top:2px solid var(--sun-deep);padding-top:14px}
.flow i{font-style:normal;font-family:var(--serif);font-size:40px;line-height:.9;color:var(--sun-deep)}
.flow h3{font-size:18px;margin-bottom:6px}
.flow p{font-size:14.5px}
@media(max-width:1020px){.flow{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.flow{grid-template-columns:1fr}}
/* one line about the pictures, on every page */
.foot-data{font-size:12.5px;color:#7f9aa6;margin-top:28px;max-width:70ch}

/* numbers */
.nums{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid rgba(255,255,255,.14)}
.num{padding:34px 26px 34px 0;border-right:1px solid rgba(255,255,255,.14)}
.num:last-child{border-right:0}
.num+.num{padding-left:26px}
.num b{display:block;font-family:var(--serif);font-weight:400;font-size:clamp(40px,4.6vw,66px);line-height:1;color:#fff;letter-spacing:-.01em}
.num b small{font-size:.45em;color:var(--sun);margin-left:4px;font-family:var(--mono);letter-spacing:0}
.num span{display:block;margin-top:14px;font-size:14.5px;line-height:1.5;color:#a9c1cb}

/* principles / feature grids */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,40px)}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(18px,2.4vw,32px)}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(20px,3vw,44px)}
.pr{border-top:1px solid var(--line-2);padding-top:22px}
.dark .pr{border-color:rgba(255,255,255,.18)}
.pr .mono{color:var(--sun-deep);display:block;margin-bottom:12px}
.dark .pr .mono{color:var(--sun)}
.pr h3{margin-bottom:8px}
.pr p{font-size:15.5px}
.feat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:26px 26px 28px}
.feat h3{font-size:19px;margin-bottom:8px}
.feat p{font-size:15.5px}
.feat .mono{color:var(--teal);display:block;margin-bottom:14px}
.dark .feat{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.12)}

/* split feature rows on the product pages */
.row{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(24px,4.5vw,64px);align-items:center}
.row.flip{grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr)}
.row.flip .row-text{order:2}
.row+.row{margin-top:clamp(64px,8vw,116px)}
.row h2{font-size:clamp(30px,3.4vw,46px);margin-bottom:16px}
.row p+p{margin-top:12px}
/* home: a wide close-up with its text above it */
.out-text{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,4.5vw,64px);align-items:start;margin-bottom:clamp(24px,3vw,36px)}
.out-text h3{margin-bottom:10px}
.out-text .meas{margin-top:4px}
/* before / after: two pictures of the same view, one under the other */
.ba{display:grid;gap:12px}
.ba .shot{position:relative}
.ba-switch{display:inline-flex;justify-self:start;padding:3px;border:1px solid var(--line-2);border-radius:99px;background:#fff}
.ba-switch button{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;padding:9px 16px;border:0;border-radius:99px;background:transparent;color:var(--ink);cursor:pointer}
.ba-switch button[aria-pressed="true"]{background:var(--ink);color:#fff}
.ba-tog .shot{grid-area:2/1}
.ba-tog .shot.off{visibility:hidden}
.ba-tog .ba-tag{display:none}
.ba-tag{position:absolute;left:12px;bottom:12px;background:rgba(14,34,48,.88);color:#fff;font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;padding:5px 11px;border-radius:99px;pointer-events:none}
.ticks{display:grid;gap:9px;margin-top:20px;font-size:15.5px;color:var(--ink-2)}
.ticks li{padding-left:24px;position:relative}
.ticks li::before{content:'+';position:absolute;left:2px;top:-1px;font-family:var(--mono);color:var(--sun-deep);font-weight:500}
.dark .ticks{color:#b9cfd7}.dark .ticks li::before{color:var(--sun)}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.stack{display:grid;gap:16px}

/* formats table */
.fmt{width:100%;border-collapse:collapse;font-size:15px}
.fmt th,.fmt td{text-align:left;padding:13px 14px 13px 0;border-bottom:1px solid var(--line);vertical-align:top}
.fmt th{font-family:var(--mono);font-weight:400;font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.fmt td:first-child{font-weight:600;white-space:nowrap;padding-right:28px}
.fmt code{font-family:var(--mono);font-size:13px;background:var(--paper-2);padding:2px 6px;border-radius:4px}

/* story: the route */
.route{position:relative;display:grid;gap:0;margin-top:8px}
.route::before{content:'';position:absolute;left:11px;top:8px;bottom:8px;width:2px;background:repeating-linear-gradient(180deg,var(--line-2) 0 10px,transparent 10px 16px)}
.stn{position:relative;display:grid;grid-template-columns:150px minmax(0,1fr);gap:clamp(18px,3vw,44px);padding:0 0 clamp(44px,5vw,72px) 46px}
.stn::before{content:'';position:absolute;left:4px;top:9px;width:16px;height:16px;border-radius:50%;background:var(--paper);border:2px solid var(--sun-deep)}
.stn.major::before{background:var(--sun-deep);box-shadow:0 0 0 6px rgba(232,90,43,.16)}
.stn-when{font-family:var(--mono);font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding-top:7px}
.stn-when b{display:block;color:var(--sun-deep);font-weight:500}
.stn h3{font-family:var(--serif);font-weight:400;font-size:clamp(26px,2.8vw,36px);line-height:1.1;letter-spacing:-.01em;margin-bottom:6px}
.stn .needline{font-style:italic;color:var(--ink);font-family:var(--serif);font-size:21px;line-height:1.3;margin-bottom:12px}
.stn p+p{margin-top:10px}
.stn .shot{margin-top:22px;max-width:760px}
.alt .stn::before{background:var(--paper-2)}

/* quote band */
.band{padding:clamp(60px,7vw,100px) 0}
.band blockquote{margin:0;font-family:var(--serif);font-size:clamp(30px,4vw,56px);line-height:1.1;letter-spacing:-.015em;max-width:22ch}
.band cite{display:block;margin-top:24px;font-family:var(--mono);font-style:normal;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#8fb0bd}

/* disclosure */
.note{display:grid;grid-template-columns:auto minmax(0,1fr);gap:18px;align-items:start;border:1px dashed var(--line-2);border-radius:12px;padding:22px 24px;background:rgba(255,255,255,.45)}
.note .mono{color:var(--sun-deep);padding-top:3px;white-space:nowrap}
.note p{font-size:15px}

/* contact: the sunset */
.sunset{background:linear-gradient(180deg,#f9a838 0%,#f0803a 55%,#e85a2b 100%);color:var(--sea-950);position:relative;overflow:hidden}
/* the sea rises under the sun: one swell, repeated */
.sunset::after{content:'';position:absolute;left:0;right:0;bottom:-1px;height:46px;background:
  url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='46' viewBox='0 0 240 46'%3E%3Cpath d='M0 24C40 24 40 8 80 8s40 16 80 16 40-10 80-10v32H0z' fill='%231e8ba4' fill-opacity='.55'/%3E%3Cpath d='M0 30c30 0 30-12 60-12s30 12 60 12 30-12 60-12 30 12 60 12v16H0z' fill='%23061824'/%3E%3C/svg%3E") 0 100%/240px 46px repeat-x}
.sunset .wrap{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.2fr) auto;gap:40px;align-items:end;padding-block:clamp(72px,8vw,120px) clamp(110px,10vw,150px)}
.sunset h2{color:var(--sea-950)}
.sunset p{color:#3b2412;max-width:54ch;margin-top:18px;font-size:18px}
.sunset .ch{color:#6b3a16}.sunset .ch b{color:var(--sea-950)}
.sunset .mail{display:block;margin-top:12px;font-family:var(--mono);font-size:13px;color:#3b2412;text-align:right}

/* footer */
.site-foot{background:var(--sea-900);color:#9db6c0;padding:54px 0 40px;font-size:14.5px}
.foot-grid{display:grid;grid-template-columns:minmax(0,1.3fr) repeat(3,minmax(0,.6fr));gap:40px}
.site-foot .brand-name{color:#eaf3f5}.site-foot .brand-name small{color:#7f9aa6}
.site-foot h4{font-family:var(--mono);font-weight:400;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:#6f8c98;margin-bottom:14px}
.site-foot a{text-decoration:none;color:#c6d8de}
.site-foot a:hover{color:#fff;text-decoration:underline}
.site-foot li+li{margin-top:8px}
.foot-base{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-top:46px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#6f8c98}
.foot-about{max-width:40ch;margin-top:16px;color:#8fa9b4}

/* lightbox */
.lb{position:fixed;inset:0;z-index:200;background:rgba(4,15,24,.92);display:none;align-items:center;justify-content:center;padding:3vmin;cursor:zoom-out}
.lb.on{display:flex}
.lb img{max-width:100%;max-height:100%;border-radius:8px;box-shadow:0 30px 80px rgba(0,0,0,.6)}
.lb button{position:absolute;top:16px;right:18px;background:rgba(255,255,255,.12);color:#fff;border:0;border-radius:99px;width:42px;height:42px;font-size:20px;cursor:pointer}

/* reveal */
.rv{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.rv.in{opacity:1;transform:none}
.no-js .rv{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media(max-width:1100px){
  .nav{height:66px}
  .menu-btn{display:block}
  .navlinks{display:none;position:absolute;left:0;right:0;top:66px;background:var(--paper);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:14px var(--gut) 22px;gap:2px;max-height:calc(100dvh - 66px);overflow-y:auto}
  .navlinks.open{display:flex}
  .navlinks a{padding:13px 10px;font-size:17px}
  .navlinks a[aria-current=page]::after{left:0;right:auto;top:10px;bottom:10px;width:3px;height:auto}
  .navlinks .cta{margin:10px 0 0;text-align:center}
}
@media(max-width:1020px){
  .hero-grid,.sec-head,.need,.out-text,.row,.row.flip,.step,.step:nth-child(even){grid-template-columns:1fr}
  .step:nth-child(even) .step-text,.row.flip .row-text{order:0}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .nums{grid-template-columns:repeat(2,minmax(0,1fr))}
  .num{border-right:0;border-bottom:1px solid rgba(255,255,255,.14);padding:28px 20px 28px 0}
  .num+.num{padding-left:0}
  .foot-grid{grid-template-columns:1fr 1fr}
  .sunset .wrap{grid-template-columns:1fr}.sunset .mail{text-align:left}
  .hero-shot{margin-bottom:-70px}.hero-foot{padding-top:96px}
}
@media(max-width:760px){
  body{font-size:16px}
  .nav{height:66px}
  .menu-btn{display:block}
  .navlinks{display:none;position:absolute;left:0;right:0;top:66px;background:var(--paper);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:14px var(--gut) 22px;gap:2px}
  .navlinks.open{display:flex}
  .navlinks a{padding:13px 10px;font-size:17px}
  .navlinks a[aria-current=page]::after{left:0;right:auto;top:10px;bottom:10px;width:3px;height:auto}
  .navlinks .cta{margin:10px 0 0;text-align:center}
  .brand-name small{display:none}
  .products,.grid-3,.grid-2,.pair{grid-template-columns:1fr}
  .grid-4{grid-template-columns:1fr}
  .stn{grid-template-columns:1fr;gap:6px;padding-left:40px}
  .note{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .sonar{width:520px;height:520px;right:-200px;bottom:-220px}
  .fmt td:first-child{white-space:normal}
  .hero-shot{margin-bottom:-40px}.hero-foot{padding-top:64px}
  /* the product picture belongs in the first screen of a phone */
  .hero{padding-top:34px}.hero .ch{margin-bottom:14px}.hero h1{font-size:40px}
  .hero-grid{gap:18px}.hero-side .actions{margin-top:18px}.hero-shot{margin-top:26px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .rv{opacity:1;transform:none}
}
@media print{.site-head,.lb,.menu-btn{display:none}.rv{opacity:1;transform:none}}