/* ARI53. "Robotics lab catalog" (Refero: Figure 03). White field, exact black type, black media chapters.
   The orange in the ARI53 logo is the only colour on the site. No shadows, no gradients. Mobile first. */
:root{
  --black:#000000; --ink:#0c0c0c; --gray:#6d6d6d; --rule:#cecece; --white:#ffffff;
  --machine:"Space Grotesk","Arial",sans-serif; --body:"Inter","Helvetica Neue",Arial,sans-serif;
  --r-link:8px; --r-panel:12px; --r-btn:24px; --wrap:1360px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--white);color:var(--ink);font:400 16px/1.5 var(--body);letter-spacing:-.01em}
img,video{display:block;max-width:100%;height:auto}
a{color:inherit;text-underline-offset:3px;text-decoration-thickness:1px}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.chapter :focus-visible{outline-color:#fff}
.skip{position:absolute;left:-999px;top:8px;z-index:50;background:var(--ink);color:#fff;padding:10px 16px;border-radius:var(--r-btn)}
.skip:focus{left:8px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 16px}
@media (min-width:768px){.wrap{padding:0 32px}}

/* type: the machine face is always 400 and uppercase */
.mach{font-family:var(--machine);font-weight:400;text-transform:uppercase}
.label{font:400 14px/1 var(--machine);letter-spacing:.02em;text-transform:uppercase;color:var(--gray);margin:0 0 16px}
.chapter .label{color:#fff}
.display{font:400 clamp(44px,8.6vw,122px)/1 var(--machine);letter-spacing:-.01em;text-transform:uppercase;margin:0 0 28px;text-wrap:balance}
.h-sec{font:400 clamp(32px,4.2vw,52px)/1.11 var(--machine);text-transform:uppercase;margin:0 0 20px;text-wrap:balance}
h3,.h-sm{font:500 22px/1.1 var(--body);letter-spacing:-.01em;margin:0 0 10px}
p{margin:0 0 16px;max-width:66ch}
.lead{font-size:17px;line-height:1.6;letter-spacing:-.01em;max-width:60ch}
.muted{color:var(--gray)}
.chapter .muted{color:rgba(255,255,255,.82)}
ul,ol{margin:0 0 16px;padding-left:1.2em}
li{margin-bottom:6px}

/* buttons: pill, 24px radius, 32px sides */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 32px;border-radius:var(--r-btn);border:1px solid var(--ink);background:var(--ink);color:#fff;font:500 14px/1.2 var(--body);text-decoration:none;cursor:pointer}
.btn:hover{background:var(--black)}
.btn-line{background:transparent;color:var(--ink)}
.btn-line:hover{background:var(--ink);color:#fff}
.chapter .btn{background:#fff;color:var(--ink);border-color:#fff}
.chapter .btn:hover{background:var(--rule);border-color:var(--rule)}
.chapter .btn-line{background:transparent;color:#fff;border-color:#fff}
.chapter .btn-line:hover{background:#fff;color:var(--ink)}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.text-link{font:400 14px/1 var(--machine);letter-spacing:.02em;text-transform:uppercase;text-decoration:none;border-bottom:1px solid currentColor;padding-bottom:3px}

/* header */
.site-head{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--rule)}
.site-head .wrap{display:flex;align-items:center;gap:24px;min-height:68px}
.brand{flex:none;display:block;border-radius:var(--r-link)}
.brand img{height:40px;width:auto}
.main-nav{display:none}
.main-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:2px}
.main-nav a{display:block;padding:10px 12px;border-radius:var(--r-link);font:400 14px/1 var(--machine);letter-spacing:.02em;text-transform:uppercase;color:var(--gray);text-decoration:none}
.main-nav a:hover{color:var(--ink)}
.main-nav a[aria-current="page"]{color:var(--ink);box-shadow:inset 0 -1px 0 var(--ink);border-radius:0}
.head-right{margin-left:auto;display:flex;align-items:center;gap:8px}
.head-right .btn{min-height:40px;padding:10px 22px}
.menu-btn{display:inline-flex;align-items:center;min-height:40px;padding:8px 18px;border:1px solid var(--rule);border-radius:29px;background:#fff;color:var(--ink);font:400 14px/1 var(--machine);text-transform:uppercase;letter-spacing:.02em;cursor:pointer}
@media (max-width:1279px){
  .main-nav.open{display:block;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--rule);padding:8px 16px 16px}
  .main-nav.open ul{flex-direction:column}
  .main-nav.open a{padding:14px 4px;border-bottom:1px solid var(--rule);border-radius:0}
  .main-nav.open a[aria-current="page"]{box-shadow:inset 2px 0 0 var(--ink);padding-left:12px}
}
@media (min-width:1280px){.main-nav{display:block}.menu-btn{display:none}.main-nav a,.head-right .btn{white-space:nowrap}}
@media (max-width:400px){.head-right .btn{display:none}}

/* home hero: full-bleed black media chapter, then the words on white */
.hero-media{background:var(--black)}
.hero-media video,.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover;max-height:78vh;margin:0 auto}
.hero-text{padding:48px 0 56px;border-bottom:1px solid var(--rule)}
.hero-text .grid{display:grid;gap:24px}
@media (min-width:960px){.hero-text .grid{grid-template-columns:1.25fr .75fr;align-items:end;gap:48px}.hero-text .lead{margin:0}}

/* inner page head */
.page-head{padding:48px 0 40px;border-bottom:1px solid var(--rule)}
.page-head .display{font-size:clamp(40px,6.6vw,96px)}
.crumbs{font:400 14px/1 var(--machine);letter-spacing:.02em;text-transform:uppercase;color:var(--gray);margin:0 0 24px}
.crumbs a{color:var(--ink);text-decoration:none;border-bottom:1px solid var(--rule)}

/* sections */
.band{padding:56px 0}
@media (min-width:768px){.band{padding:80px 0}}
.band + .band{border-top:1px solid var(--rule)}
.chapter{background:var(--black);color:#fff}
.band.chapter{border-top:0}
.sec-head{display:grid;gap:12px;margin-bottom:40px}
@media (min-width:960px){.sec-head{grid-template-columns:1fr 1fr;align-items:end;gap:48px}.sec-head p{margin:0}}
.split{display:grid;gap:32px}
.split > *{min-width:0}
@media (min-width:960px){.split{grid-template-columns:1fr 1fr;gap:64px;align-items:start}}

/* spec rows: grey label, black value, 1px rule */
.spec{list-style:none;margin:0;padding:0;border-top:1px solid var(--ink)}
.spec li{display:flex;justify-content:space-between;align-items:baseline;gap:24px;padding:16px 0;border-bottom:1px solid var(--rule);margin:0}
.spec li > span:first-child{color:var(--gray)}
.spec li > :last-child{font:400 22px/1.1 var(--machine);text-transform:uppercase;text-align:right;white-space:nowrap}
@media (max-width:560px){.spec li > :last-child{white-space:normal;font-size:19px}.spec li > span:first-child{flex:1 1 55%}}
.spec li small{font:400 14px/1 var(--body);color:var(--gray);text-transform:none}
.chapter .spec{border-color:#fff}.chapter .spec li{border-color:rgba(255,255,255,.22)}.chapter .spec li > span:first-child{color:rgba(255,255,255,.82)}

/* plans */
.plans{display:grid;gap:20px}
@media (min-width:960px){.plans{grid-template-columns:repeat(3,1fr)}}
.plan{border:1px solid var(--rule);border-radius:var(--r-panel);padding:32px;display:flex;flex-direction:column}
.plan.pick{border-color:var(--ink);background:var(--ink);color:#fff}
.plan .tag{font:400 14px/1 var(--machine);text-transform:uppercase;letter-spacing:.02em;color:var(--gray);margin:0 0 20px}
.plan.pick .tag{color:#fff}
.plan .price{font:400 clamp(40px,4.4vw,52px)/1 var(--machine);margin:0 0 4px}
.plan .per{font-size:14px;color:var(--gray);margin:0 0 24px}
.plan.pick .per{color:rgba(255,255,255,.8)}
.plan ul{list-style:none;padding:0;margin:0 0 28px;border-top:1px solid var(--rule)}
.plan.pick ul{border-color:rgba(255,255,255,.3)}
.plan li{padding:12px 0;border-bottom:1px solid var(--rule);margin:0}
.plan.pick li{border-color:rgba(255,255,255,.3)}
.plan .btn{margin-top:auto;align-self:flex-start}
.plan.pick .btn{background:#fff;color:var(--ink);border-color:#fff}

/* service tiles */
.tiles{display:grid;gap:0;border-top:1px solid var(--ink);list-style:none;padding:0;margin:0}
@media (min-width:768px){.tiles{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1100px){.tiles{grid-template-columns:repeat(3,1fr)}}
.tiles li{margin:0;border-bottom:1px solid var(--rule)}
@media (min-width:768px){.tiles li:nth-child(odd){border-right:1px solid var(--rule)}}
@media (min-width:1100px){.tiles li{border-right:1px solid var(--rule)}.tiles li:nth-child(3n){border-right:0}}
.tiles a{display:flex;flex-direction:column;gap:10px;padding:28px 24px 32px;text-decoration:none;min-height:100%}
.tiles a:hover{background:#f6f6f6}
.tiles .t-price{font:400 28px/1.11 var(--machine);text-transform:uppercase}
.tiles p{margin:0;color:var(--gray)}

/* tables */
.table-wrap{overflow-x:auto;border-top:1px solid var(--ink);margin:0 0 16px}
table{border-collapse:collapse;width:100%;min-width:520px;font-size:16px}
th,td{text-align:left;vertical-align:top;padding:14px 16px 14px 0;border-bottom:1px solid var(--rule)}
thead th{font:400 14px/1 var(--machine);letter-spacing:.02em;text-transform:uppercase;color:var(--gray)}
td.num{font:400 20px/1.1 var(--machine);white-space:nowrap;text-align:right;padding-right:0}
th.num{text-align:right;padding-right:0}
.note{font-size:14px;color:var(--gray)}
.chapter .note{color:rgba(255,255,255,.8)}
mark.todo{background:#ececec;color:var(--ink);padding:0 4px;border-radius:4px;outline:1px dashed var(--gray)}

/* steps */
.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:24px}
@media (min-width:960px){.steps{grid-template-columns:repeat(3,1fr)}}
.steps li{counter-increment:s;border-top:1px solid var(--ink);padding-top:18px;margin:0}
.steps li::before{content:"0" counter(s);display:block;font:400 28px/1 var(--machine);margin-bottom:14px}
.chapter .steps li{border-color:#fff}

/* faq */
.faqs{border-top:1px solid var(--ink);max-width:920px}
details.faq{border-bottom:1px solid var(--rule)}
details.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px 0;font:500 18px/1.35 var(--body)}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font:400 24px/1 var(--machine);color:var(--gray);flex:none}
details.faq[open] summary::after{content:"\2212"}
details.faq > :not(summary){margin:0 0 20px}

/* panels and slots */
.panel{border:1px solid var(--rule);border-radius:var(--r-panel);padding:32px}
.slot{border:1px dashed var(--rule);border-radius:var(--r-panel);min-height:260px;display:grid;place-items:center;text-align:center;padding:24px;color:var(--gray);font:400 14px/1.3 var(--machine);text-transform:uppercase;letter-spacing:.02em}

/* work examples, reviews and Arie's photo. Empty ones are dashed slots until the real thing arrives */
.work,.quotes{list-style:none;margin:0;padding:0;display:grid;gap:32px}
/* small cards: as many 260px+ columns as fit, so they sit side by side from about 560px wide */
.work{grid-template-columns:repeat(auto-fill,minmax(min(100%,260px),1fr));gap:28px}
@media (min-width:768px){.quotes{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1100px){.quotes{grid-template-columns:repeat(3,1fr)}}
.work-card h3{font-size:19px}
.work-card p.muted{font-size:15px}
.work-card{margin:0}
.work-card img,.work-card video,.work-card .slot{width:100%;aspect-ratio:16/9;min-height:0;object-fit:cover;object-position:top;margin-bottom:18px}
.work-card video{background:var(--black)}
.work-card img,.work-card video{border:1px solid var(--rule)}
.work-card .label{margin-bottom:10px}
.work-card p.muted{margin:0}
.quotes li{margin:0;border-top:1px solid var(--ink);padding-top:20px}
.quotes blockquote{margin:0 0 16px}
.quotes blockquote p{font:400 20px/1.4 var(--body);letter-spacing:-.01em}
.quotes .cite{font-weight:500;margin:0}
.quotes .cite span{display:block;font-weight:400;color:var(--gray)}
.quotes li:has(.slot){border-top:0;padding-top:0}
.slot-quote{min-height:200px}
.slot-portrait,.portrait{width:100%;aspect-ratio:4/5;min-height:0;max-width:420px;object-fit:cover}
@media (min-width:1100px){.steps-5{grid-template-columns:repeat(5,1fr)}}
.shot{width:100%;height:auto;border:1px solid var(--rule)}

/* form */
.form{display:grid;gap:18px;align-content:start}
.form .label{margin:0}
.field{display:grid;gap:8px}
.field label{font:400 14px/1.2 var(--machine);letter-spacing:.02em;text-transform:uppercase}
.field label span{color:var(--gray);text-transform:none;font-family:var(--body);letter-spacing:0}
.field input,.field textarea{width:100%;min-height:48px;padding:12px 14px;border:1px solid var(--rule);border-radius:var(--r-link);background:#fff;color:var(--ink);font:400 16px/1.4 var(--body)}
.field input:focus,.field textarea:focus{border-color:var(--ink);outline:none;box-shadow:inset 0 0 0 1px var(--ink)}
.form .btn{justify-self:start}
.form .btn:disabled{opacity:.6;cursor:wait}
.form .note{margin:0}
.form-msg:empty{display:none}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* closing chapter */
.closing .wrap{padding-block:72px;display:grid;gap:24px}
@media (min-width:960px){.closing .wrap{grid-template-columns:1.2fr .8fr;align-items:end}}

/* footer */
.site-foot{background:var(--black);color:rgba(255,255,255,.82);font-size:15px}
.site-foot .wrap{display:grid;gap:32px;padding-block:56px 32px}
@media (min-width:960px){.site-foot .wrap{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.site-foot img{height:44px;width:auto;margin-bottom:16px}
.site-foot h2{font:400 14px/1 var(--machine);letter-spacing:.02em;text-transform:uppercase;color:#fff;margin:0 0 16px}
.site-foot ul{list-style:none;padding:0;margin:0}
.site-foot li{margin-bottom:8px}
.site-foot a{color:#fff;text-decoration:none}
.site-foot a:hover{text-decoration:underline}
.site-foot .legal{grid-column:1/-1;border-top:1px solid #262626;padding-top:20px;font-size:13px;color:rgba(255,255,255,.7)}
.site-foot mark.todo{background:#262626;color:#fff;outline-color:#777}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.payfast{margin:0}