/* ============================================================
   MEMORIA — User Guide
   Warm editorial system + a precise, futuristic overlay layer
   ============================================================ */
:root{
  --paper:#EFE6DA; --paper-dim:#E6DDC8; --bg:#F4ECE0; --bg-deep:#EDE2D2;
  --card:#FBF8F0; --card-alt:#F0E8D6;
  --ink:#1C1A14; --ink2:#2E2A20; --ink3:#4A4539; --line:#C9C0AB;
  --terra:#A04331; --terra-soft:#F2DDD3; --terra-deep:#7A2F1F; --terra-ink:#FBF8F0;
  --moss:#4A5D3A; --moss-soft:#DDE5D2;
  --blue:#6E7F9B; --blue-soft:#DDE3EC;
  --font-serif:"Fraunces",Georgia,serif;
  --font-sans:"Inter",-apple-system,system-ui,sans-serif;
  --font-mono:"JetBrains Mono","SF Mono",ui-monospace,monospace;
  --soft:75;
  --ease-apple:cubic-bezier(0.32,0.72,0,1);
  --d-fast:200ms; --d-base:400ms; --d-reveal:700ms;
  --rail:300px; --maxw:920px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:40px;}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font-sans);line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
::selection{background:var(--terra-soft);color:var(--terra-deep);}
.serif{font-family:var(--font-serif);font-variation-settings:"opsz" 144,"SOFT" var(--soft),"wght" 400;}
.italic{font-style:italic;color:var(--terra);}
.mono{font-family:var(--font-mono);}
a{color:var(--terra-deep);text-decoration-thickness:1px;text-underline-offset:2px;}
a:hover{color:var(--terra);}

/* reading-progress bar */
#progress{position:fixed;top:0;left:0;height:3px;width:0%;
  background:linear-gradient(90deg,var(--terra),var(--terra-deep));z-index:120;transition:width 120ms linear;}

/* ============================================================ FLOATING WAVE GRADIENTS */
.aura{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;}
.aura .b{position:absolute;border-radius:50%;filter:blur(72px);will-change:transform;}
.aura .b1{width:52vw;height:52vw;left:-12vw;top:-10vh;
  background:radial-gradient(circle at 32% 32%, rgba(160,67,49,.30), rgba(160,67,49,0) 68%);
  animation:drift1 36s ease-in-out infinite;}
.aura .b2{width:46vw;height:46vw;right:-14vw;top:16vh;
  background:radial-gradient(circle at 50% 50%, rgba(74,93,58,.24), rgba(74,93,58,0) 68%);
  animation:drift2 46s ease-in-out infinite;}
.aura .b3{width:44vw;height:44vw;left:22vw;bottom:-16vh;
  background:radial-gradient(circle at 50% 50%, rgba(214,148,108,.30), rgba(214,148,108,0) 68%);
  animation:drift3 40s ease-in-out infinite;}
.aura .b4{width:34vw;height:34vw;right:8vw;bottom:6vh;
  background:radial-gradient(circle at 50% 50%, rgba(122,47,31,.18), rgba(122,47,31,0) 70%);
  animation:drift4 52s ease-in-out infinite;}
@keyframes drift1{0%,100%{transform:translate(0,0) scale(1);}50%{transform:translate(9vw,7vh) scale(1.16);}}
@keyframes drift2{0%,100%{transform:translate(0,0) scale(1);}50%{transform:translate(-8vw,-6vh) scale(1.12);}}
@keyframes drift3{0%,100%{transform:translate(0,0) scale(1);}50%{transform:translate(6vw,-8vh) scale(1.2);}}
@keyframes drift4{0%,100%{transform:translate(0,0) scale(1);}50%{transform:translate(-6vw,5vh) scale(1.14);}}

/* ============================================================ SHELL */
.shell{display:grid;grid-template-columns:var(--rail) 1fr;align-items:start;position:relative;z-index:1;}

/* sidebar */
.rail{position:sticky;top:0;height:100vh;overflow-y:auto;
  border-right:1px solid rgba(160,67,49,0.14);
  background:linear-gradient(180deg,var(--paper),var(--bg-deep));padding:34px 26px 40px;}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;}
.brand .logo{width:40px;height:40px;border-radius:11px;background:var(--terra);
  display:grid;place-items:center;flex:none;overflow:hidden;box-shadow:0 4px 14px -6px rgba(122,47,31,.6);}
.brand .logo img{width:100%;height:100%;object-fit:cover;display:block;}
.brand .logo span{font-family:var(--font-serif);font-variation-settings:"opsz" 40,"SOFT" 100,"wght" 500;
  color:#F3E9DC;font-size:33px;line-height:1;margin-top:1px;}
.brand .wm{font-family:var(--font-serif);font-variation-settings:"opsz" 72,"SOFT" var(--soft),"wght" 500;
  font-size:24px;letter-spacing:-.02em;color:var(--ink);}
.rail .kick{font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.22em;
  text-transform:uppercase;color:var(--terra);margin:22px 0 18px;}

.toc{list-style:none;margin:0;padding:0;border-top:1px solid rgba(160,67,49,.12);}
.toc>li{border-bottom:1px solid rgba(160,67,49,.1);}
.toc a{display:flex;gap:11px;align-items:baseline;text-decoration:none;color:var(--ink2);
  padding:12px 10px;border-radius:9px;transition:background var(--d-fast),color var(--d-fast);
  font-size:15.5px;line-height:1.3;}
.toc a .n{font-family:var(--font-mono);font-size:12px;font-weight:600;color:var(--terra);flex:none;width:14px;}
.toc a:hover{background:var(--card);color:var(--ink);}
.toc a.active{background:var(--card);color:var(--terra-deep);font-weight:500;box-shadow:inset 2px 0 0 var(--terra);}
.toc .sub-list{list-style:none;margin:0 0 8px;padding:0 0 0 25px;}
.toc .sub-list a{padding:7px 10px;font-size:14px;color:var(--ink3);}
.toc .sub-list a.active{box-shadow:none;background:transparent;color:var(--terra);font-weight:500;}

.rail .help{margin-top:24px;padding:15px 16px;border:1px solid rgba(160,67,49,.18);
  border-radius:14px;background:var(--card);}
.rail .help .t{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink3);}
.rail .help a{display:block;font-size:14px;margin-top:7px;word-break:break-word;text-decoration:none;}

/* back to the marketing home (leaves the guide) */
.backhome{display:inline-flex;align-items:center;gap:8px;text-decoration:none;
  font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink3);transition:color var(--d-fast),gap var(--d-fast);}
.backhome:hover{color:var(--terra-deep);gap:11px;}
.backhome svg{width:15px;height:15px;flex:none;}
.rail .backhome{margin:0 0 20px;}
.menu .backhome{margin:8px 2px 2px;}

.topbar{display:none;}
.menu{display:none;}

/* ============================================================ MAIN */
.main{min-width:0;}
.wrap{max-width:var(--maxw);margin-inline:auto;padding:0 clamp(22px,5vw,66px);}

/* hero */
.hero{position:relative;overflow:hidden;padding:clamp(64px,10vw,120px) 0 clamp(44px,7vw,80px);
  border-bottom:1px solid rgba(160,67,49,.14);}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle at 1px 1px, rgba(122,47,31,.12) 1px, transparent 0);
  background-size:28px 28px;
  -webkit-mask:linear-gradient(120deg,#000,transparent 62%);mask:linear-gradient(120deg,#000,transparent 62%);
  opacity:.55;}
.hero .inner{position:relative;}
.hero .kick{font-family:var(--font-mono);font-size:13px;font-weight:600;letter-spacing:.24em;
  text-transform:uppercase;color:var(--terra);display:flex;align-items:center;gap:12px;}
.hero .kick::after{content:"";flex:1;max-width:120px;height:1px;background:rgba(160,67,49,.35);}
.hero h1{font-family:var(--font-serif);font-variation-settings:"opsz" 144,"SOFT" var(--soft),"wght" 400;
  font-weight:400;font-size:clamp(58px,11vw,116px);letter-spacing:-.035em;line-height:.94;margin:20px 0 0;}
.hero .lede{font-size:clamp(19px,2.4vw,23px);line-height:1.5;color:var(--ink2);max-width:34ch;margin:26px 0 0;}
.hero .chips{display:flex;gap:9px;flex-wrap:wrap;margin-top:34px;}
.hero .chips span{font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.08em;
  text-transform:uppercase;color:var(--ink3);background:var(--card);border:1px solid rgba(160,67,49,.18);
  border-radius:999px;padding:9px 15px;}
.hero .meta{margin-top:30px;font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
  color:var(--ink3);text-transform:uppercase;}

/* sections */
.section{padding:clamp(52px,8vw,92px) 0;border-bottom:1px solid rgba(160,67,49,.12);}
.section-head{margin-bottom:32px;}
.section-head .eyebrow{font-family:var(--font-mono);font-size:16px;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--terra);display:flex;align-items:center;gap:13px;}
.section-head .eyebrow::before{content:attr(data-num);font-size:16px;opacity:.8;
  background:var(--terra-soft);color:var(--terra-deep);padding:4px 10px;border-radius:8px;letter-spacing:.08em;}
.section-head h2{font-family:var(--font-serif);font-variation-settings:"opsz" 144,"SOFT" var(--soft),"wght" 400;
  font-weight:400;font-size:clamp(34px,5vw,58px);letter-spacing:-.028em;line-height:1.0;margin:14px 0 0;}
.section-head .intro{font-size:19px;line-height:1.6;color:var(--ink2);max-width:62ch;margin:20px 0 0;}
.section-head h2 .timer{display:inline-flex;align-items:center;gap:8px;vertical-align:middle;
  font-family:var(--font-mono);font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--moss);background:var(--moss-soft);border:1px solid rgba(74,93,58,.3);
  border-radius:999px;padding:7px 14px;margin-left:16px;transform:translateY(-5px);text-transform:none;}
.section-head h2 .timer::before{content:"";width:13px;height:13px;border-radius:50%;
  border:1.5px solid var(--moss);position:relative;
  background:
    linear-gradient(var(--moss),var(--moss)) 50% 50%/1.5px 5px no-repeat,
    linear-gradient(var(--moss),var(--moss)) 50% 50%/4px 1.5px no-repeat;
  background-position:center top 2px, center;}

/* ---- setup step tracker ---- */
.tracker{display:flex;gap:10px;flex-wrap:wrap;margin:6px 0 30px;}
.tracker a{flex:1;min-width:150px;display:flex;align-items:center;gap:12px;text-decoration:none;cursor:pointer;
  background:var(--card);border:1px solid rgba(160,67,49,.22);border-radius:14px;padding:13px 16px;
  box-shadow:0 1px 0 rgba(160,67,49,.06);
  transition:border-color var(--d-fast),background var(--d-fast),transform var(--d-fast),box-shadow var(--d-fast);}
.tracker a::after{content:"";flex:none;margin-left:auto;width:8px;height:8px;border-top:2px solid var(--terra);border-right:2px solid var(--terra);
  transform:rotate(45deg);opacity:.45;transition:opacity var(--d-fast),transform var(--d-fast);}
.tracker a:hover{border-color:var(--terra);transform:translateY(-2px);background:#fff;box-shadow:0 8px 20px -10px rgba(122,47,31,.45);}
.tracker a:hover::after{opacity:1;transform:rotate(45deg) translate(1px,-1px);}
.tracker a .tn{flex:none;width:30px;height:30px;border-radius:50%;background:var(--terra-deep);color:#fff;
  display:grid;place-items:center;font-family:var(--font-serif);
  font-variation-settings:"opsz" 30,"SOFT" var(--soft),"wght" 500;font-size:16px;}
.tracker a .tw{display:flex;flex-direction:column;gap:2px;}
.tracker a .tl{font-family:var(--font-sans);font-weight:600;font-size:15px;color:var(--ink);line-height:1.2;}
.tracker a .ts{font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink3);}

/* ---- tabs + panes ---- */
.tabs{display:flex;gap:4px;background:var(--bg-deep);border:1px solid rgba(160,67,49,.16);
  border-radius:12px;padding:4px;margin:18px 0;}
.tabs .tab{flex:1;border:0;background:transparent;cursor:pointer;border-radius:9px;padding:9px 10px;
  font-family:var(--font-sans);font-weight:600;font-size:13.5px;color:var(--ink3);
  transition:background var(--d-fast),color var(--d-fast);}
.tabs .tab:hover{color:var(--ink);}
.tabs .tab.active{background:var(--card);color:var(--terra-deep);box-shadow:0 2px 6px -3px rgba(122,47,31,.4);}
.tabpane{display:none;}
.tabpane.active{display:block;}

/* ---- camera kit grid ---- */
.kit{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:24px 0;max-width:74ch;}
.kitcard{margin:0;background:var(--card);border:1px solid rgba(160,67,49,.16);border-radius:18px;
  overflow:hidden;display:flex;flex-direction:column;}
.kitcard .photo{border:0;border-radius:0;box-shadow:none;background:#EFE7DB;aspect-ratio:4/3;}
.kitcard .photo img{width:100%;height:100%;object-fit:contain;padding:10px;display:block;}
.kitcard figcaption{padding:14px 18px 18px;display:flex;flex-direction:column;gap:3px;}
.kitcard .qty{font-family:var(--font-mono);font-size:16px;font-weight:600;letter-spacing:.02em;color:var(--terra);vertical-align:1px;margin-left:7px;}
.kitcard b{font-family:var(--font-serif);font-variation-settings:"opsz" 48,"SOFT" var(--soft),"wght" 500;
  font-weight:500;font-size:19px;letter-spacing:-.01em;color:var(--ink);}
.kitcard .sub{font-size:14.5px;line-height:1.45;color:var(--ink3);}

/* ---- instruction diagram ---- */
.diagram{margin:24px 0 4px;display:flex;flex-direction:column;align-items:center;gap:14px;}
.diagram img{width:100%;max-width:880px;border-radius:16px;border:1px solid rgba(160,67,49,.16);
  box-shadow:0 22px 46px -30px rgba(28,26,20,.4);cursor:zoom-in;background:#fff;}
.diagram figcaption{font-size:15.5px;line-height:1.5;color:var(--ink3);text-align:center;max-width:54ch;}

/* ---- image zoom overlay ---- */
.imgzoom{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;
  padding:24px;background:rgba(18,14,10,.78);backdrop-filter:blur(5px);cursor:zoom-out;}
.imgzoom.open{display:flex;}
.imgzoom img{max-width:96vw;max-height:94vh;border-radius:12px;box-shadow:0 40px 90px -24px rgba(0,0,0,.7);}

.section h3{font-family:var(--font-serif);font-variation-settings:"opsz" 80,"SOFT" var(--soft),"wght" 500;
  font-weight:500;font-size:clamp(24px,3vw,32px);letter-spacing:-.02em;margin:0 0 4px;scroll-margin-top:40px;}
.prose{max-width:64ch;}
.prose p{font-size:18px;line-height:1.66;color:var(--ink2);margin:14px 0;}
.prose strong{color:var(--ink);font-weight:600;}

/* subsection */
.sub{padding:32px 0;border-top:1px solid rgba(160,67,49,.1);}
.sub:first-of-type{border-top:0;}
.sub .lab{font-family:var(--font-serif);font-variation-settings:"opsz" 72,"SOFT" var(--soft),"wght" 500;
  font-weight:500;font-size:26px;letter-spacing:-.018em;text-transform:none;color:var(--ink);margin-bottom:14px;}
.sub .lab.new::before{content:"NEW";font-family:var(--font-mono);font-size:10px;font-weight:600;background:var(--terra);color:#fff;
  padding:4px 8px;border-radius:999px;margin-right:11px;letter-spacing:.12em;vertical-align:5px;}

/* numbered steps + spine */
.steps{counter-reset:step;margin:8px 0 0;position:relative;}
.steps::before{content:"";position:absolute;left:21px;top:46px;bottom:46px;width:2px;
  background:linear-gradient(180deg,transparent,var(--terra) 8%,var(--terra) 92%,transparent);
  opacity:.28;}
.step{display:grid;grid-template-columns:auto 1fr;gap:22px;padding:30px 0;
  border-top:1px solid rgba(160,67,49,.12);position:relative;}
.step:first-child{border-top:0;}
.step .badge{counter-increment:step;flex:none;position:relative;z-index:1;}
.step .badge::before{content:counter(step);display:grid;place-items:center;width:44px;height:44px;
  border-radius:50%;background:var(--terra-deep);color:#fff;font-family:var(--font-serif);
  font-variation-settings:"opsz" 40,"SOFT" var(--soft),"wght" 500;font-size:21px;
  box-shadow:0 0 0 7px var(--bg),0 6px 16px -8px rgba(122,47,31,.7);}
.step-body{min-width:0;padding-top:3px;}
.step-body h4{font-family:var(--font-serif);font-variation-settings:"opsz" 60,"SOFT" var(--soft),"wght" 500;
  font-weight:500;font-size:23px;letter-spacing:-.015em;margin:0 0 6px;color:var(--ink);}
.step-body p{font-size:17px;line-height:1.6;color:var(--ink2);margin:8px 0;max-width:58ch;}
.step-body .accent{color:var(--terra-deep);}

/* lists */
.tlist{list-style:none;margin:14px 0;padding:0;max-width:58ch;}
.tlist li{position:relative;padding:8px 0 8px 30px;font-size:17px;color:var(--ink2);line-height:1.55;}
.tlist li::before{content:"";position:absolute;left:5px;top:16px;width:7px;height:7px;border-radius:50%;background:var(--terra);}
.tlist.check li::before{content:"✓";left:0;top:7px;width:auto;height:auto;background:none;color:var(--moss);font-weight:700;font-size:16px;}
.tlist.ol{counter-reset:li;}
.tlist.ol li{padding-left:34px;}
.tlist.ol li::before{counter-increment:li;content:counter(li);left:0;top:9px;width:21px;height:21px;border-radius:50%;
  background:var(--terra-soft);color:var(--terra-deep);font-family:var(--font-mono);font-size:11px;font-weight:600;
  display:grid;place-items:center;}

/* ============================================================ DEVICE + SHOTS */
/* Default: centered group (used for single-screen steps).
   Multi-screen steps are upgraded to a one-at-a-time CAROUSEL by manual.js. */
.shots{display:flex;justify-content:center;flex-wrap:wrap;gap:26px;margin:24px 0 6px;}
.shot{margin:0;display:flex;flex-direction:column;align-items:center;gap:14px;width:244px;position:relative;}
.shot.w-sm{width:222px;}
.shot.w-lg{width:262px;}
.shot.w-xl{width:300px;}
/* single (non-carousel) phones read a touch smaller than carousel ones */
.shot.solo{max-width:206px;}

/* ---- carousel (built by JS) ---- */
.carousel{position:relative;max-width:430px;margin:24px auto 4px;padding:0;display:block;}
.carousel .clabel{display:flex;justify-content:center;margin:0 0 16px;}
.carousel .cviewport{overflow:hidden;}
.carousel .ctrack{display:flex;align-items:stretch;transition:transform .5s var(--ease-apple);}
.carousel .cslide{flex:0 0 100%;width:100%;display:flex;flex-direction:column;align-items:center;gap:15px;}
.carousel .cslide .phone{width:252px;}
.carousel .cslide figcaption{font-size:16px;max-width:30ch;min-height:2.6em;}
.cbtn{position:absolute;top:45%;transform:translateY(-50%);z-index:3;
  width:42px;height:42px;border-radius:50%;border:1px solid rgba(160,67,49,.22);
  background:var(--card);color:var(--terra-deep);cursor:pointer;display:grid;place-items:center;
  box-shadow:0 8px 20px -10px rgba(122,47,31,.45);
  transition:background var(--d-fast),color var(--d-fast),border-color var(--d-fast),opacity var(--d-fast);}
.cbtn:hover{background:var(--terra-deep);color:#fff;border-color:var(--terra-deep);}
.cbtn:disabled{opacity:.28;cursor:default;box-shadow:none;}
.cbtn.prev{left:-2px;}
.cbtn.next{right:-2px;}
.cbtn svg{width:18px;height:18px;}
.cfoot{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:16px;}
.cdots{display:flex;gap:8px;}
.cdot{width:7px;height:7px;border-radius:99px;background:rgba(160,67,49,.26);border:0;padding:0;cursor:pointer;
  transition:background var(--d-fast),width var(--d-fast);}
.cdot.active{background:var(--terra);width:22px;}
.ccount{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--ink3);white-space:nowrap;}

/* expand affordance on each carousel phone */
.carousel .cslide .phone{cursor:pointer;}
.phone.enlargeable{cursor:pointer;}
.cexpand{position:absolute;top:9px;right:9px;z-index:4;width:30px;height:30px;border-radius:9px;
  border:0;cursor:pointer;display:grid;place-items:center;color:#fff;
  background:rgba(20,16,11,.42);backdrop-filter:blur(3px);
  opacity:0;transition:opacity var(--d-fast),background var(--d-fast);}
.carousel:hover .cexpand{opacity:1;}
.cexpand:hover{background:rgba(20,16,11,.66);}
.cexpand svg{width:15px;height:15px;}

/* ---- LIGHTBOX (tap to enlarge, click through) ---- */
.lb{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;
  padding:24px;background:rgba(18,14,10,.66);backdrop-filter:blur(6px);}
.lb.open{display:flex;}
.lb-stage{position:relative;display:flex;flex-direction:column;align-items:center;gap:16px;
  max-width:96vw;max-height:96vh;animation:lbpop .32s var(--ease-apple);}
.lb-labelwrap{display:flex;justify-content:center;}
@keyframes lbpop{from{opacity:0;transform:scale(.96);}to{opacity:1;transform:none;}}
.lb-phone{position:relative;width:min(360px,90vw,39vh);background:#16130D;border-radius:46px;padding:7px;
  box-shadow:0 40px 90px -24px rgba(0,0,0,.7);}
.lb-phone.dark{background:#0B0B0C;}
.lb-screen{position:relative;width:100%;aspect-ratio:1179/2556;border-radius:39px;overflow:hidden;line-height:0;background:#000;}
.lb-screen img{width:100%;height:100%;object-fit:contain;display:block;}
.lb-cap{color:#F4ECE0;font-size:17px;line-height:1.5;text-align:center;max-width:42ch;}
.lb-cap b{color:#fff;font-weight:600;}
.lb-foot{display:flex;align-items:center;gap:14px;}
.lb-foot .cdot{background:rgba(244,236,224,.32);}
.lb-foot .cdot.active{background:#fff;}
.lb-foot .ccount{color:rgba(244,236,224,.7);}
.lb-close{position:fixed;top:22px;right:24px;width:46px;height:46px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(244,236,224,.14);color:#fff;display:grid;place-items:center;transition:background var(--d-fast);}
.lb-close:hover{background:rgba(244,236,224,.28);}
.lb-close svg{width:22px;height:22px;}
.lb-arrow{position:fixed;top:50%;transform:translateY(-50%);width:54px;height:54px;border-radius:50%;border:0;
  cursor:pointer;background:rgba(244,236,224,.14);color:#fff;display:grid;place-items:center;z-index:201;
  transition:background var(--d-fast),opacity var(--d-fast);}
.lb-arrow:hover{background:rgba(244,236,224,.3);}
.lb-arrow:disabled{opacity:.25;cursor:default;}
.lb-arrow.prev{left:24px;}
.lb-arrow.next{right:24px;}
.lb-arrow svg{width:26px;height:26px;}
@media(max-width:620px){
  /* enlarged phone is 66vw, so each side gap is 17vw. Centre a 40px arrow in
     that gap: gap centre = 8.5vw from the edge, minus half the arrow (20px). */
  .lb{padding:16px;}
  .lb-phone{width:min(66vw,38vh);padding:6px;border-radius:38px;}
  .lb-screen{border-radius:32px;}
  .lb-arrow{width:40px;height:40px;}
  .lb-arrow.prev{left:calc(8.5vw - 20px);}
  .lb-arrow.next{right:calc(8.5vw - 20px);}
  .lb-arrow svg{width:22px;height:22px;}
  .lb-close{top:14px;right:14px;width:40px;height:40px;}
  .lb-cap{font-size:15px;}
}

/* slim, precise phone frame */
.phone{width:100%;background:#16130D;border-radius:34px;padding:5px;
  box-shadow:0 26px 52px -32px rgba(28,26,20,.55),0 2px 8px -4px rgba(28,26,20,.3);position:relative;}
.phone.dark{background:#0B0B0C;}
.phone .screen{position:relative;border-radius:29px;overflow:hidden;line-height:0;aspect-ratio:1179/2556;background:#000;}
.phone .screen::after{content:"";position:absolute;inset:0;border-radius:29px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.05);pointer-events:none;}
.phone img{width:100%;height:100%;object-fit:contain;display:block;}

.shot figcaption{font-size:15px;line-height:1.5;color:var(--ink2);text-align:center;max-width:26ch;}
.shot figcaption b{color:var(--ink);font-weight:600;}

/* app label */
.applabel{font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.1em;
  text-transform:uppercase;padding:6px 13px;border-radius:999px;display:inline-flex;gap:7px;align-items:center;}
.applabel::before{content:"";width:7px;height:7px;border-radius:50%;}
.applabel.care{background:var(--terra-soft);color:var(--terra-deep);}
.applabel.care::before{background:var(--terra);}
.applabel.sensor{background:#E0D7C5;color:var(--ink2);}
.applabel.sensor::before{background:var(--ink);}

/* physical photo */
.photo{border-radius:18px;overflow:hidden;border:1px solid rgba(160,67,49,.16);
  box-shadow:0 22px 46px -30px rgba(28,26,20,.4);background:var(--card);line-height:0;position:relative;}
.photo img{width:100%;display:block;}
.shot.photo-shot{width:330px;}

/* ============================================================ COACHMARK HIGHLIGHT
   One clean ring on the target. White separation so it reads on any screen.
   Gentle halo pulse (box-shadow alpha only — smooth, no scale/jitter). */
.ret{position:absolute;left:var(--l);top:var(--t);width:var(--w);height:var(--h);
  border-radius:11px;pointer-events:none;z-index:2;
  border:2px solid var(--terra);
  box-shadow:0 0 0 1.5px rgba(251,248,240,.92),0 2px 12px -2px rgba(122,47,31,.4);
  animation:retpulse 2.6s ease-in-out infinite;}
@keyframes retpulse{
  0%,100%{box-shadow:0 0 0 1.5px rgba(251,248,240,.92),0 0 0 4px rgba(160,67,49,0),0 2px 12px -2px rgba(122,47,31,.35);}
  50%{box-shadow:0 0 0 1.5px rgba(251,248,240,.92),0 0 0 5px rgba(160,67,49,.16),0 2px 12px -2px rgba(122,47,31,.5);}
}
/* caption action verb */
.shot figcaption .do{color:var(--terra-deep);font-weight:600;}

/* ============================================================ CALLOUTS */
.callout{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start;border-radius:18px;
  padding:22px 24px;margin:24px 0;max-width:66ch;background:var(--card);border:1px solid rgba(160,67,49,.18);}
.callout .ic{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;flex:none;font-size:18px;font-weight:700;}
.callout .ctitle{font-family:var(--font-serif);font-variation-settings:"opsz" 60,"SOFT" var(--soft),"wght" 500;
  font-weight:500;font-size:20px;letter-spacing:-.012em;margin:0 0 4px;color:var(--ink);}
.callout p{margin:4px 0 0;font-size:16px;line-height:1.58;color:var(--ink2);}
.callout.warn{background:var(--terra-soft);border-color:rgba(160,67,49,.32);}
.callout.warn .ic{background:var(--terra);color:#fff;}
.callout.tip{background:var(--moss-soft);border-color:rgba(74,93,58,.3);}
.callout.tip .ic{background:var(--moss);color:#fff;}
.callout.alert{background:#F6E7C7;border-color:rgba(176,122,26,.34);}
.callout.alert .ic{background:#B07A1A;color:#fff;}
.callout.info .ic{background:var(--terra-soft);color:var(--terra-deep);}

/* testflight link card */
.tflight{display:flex;align-items:center;gap:22px;background:var(--card);border:1px solid rgba(160,67,49,.2);
  border-radius:18px;padding:20px 22px;margin:22px 0;max-width:66ch;}
.tflight .qr{flex:none;width:110px;height:110px;border-radius:12px;border:1px solid rgba(160,67,49,.16);
  background:#fff;padding:9px;}
.tflight .qr img{width:100%;height:100%;display:block;image-rendering:pixelated;}
.tflight .tfbody{min-width:0;margin-right:auto;}
.tflight .cl{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink3);}
.tflight .tfa{display:block;font-family:var(--font-serif);font-variation-settings:"opsz" 48,"SOFT" var(--soft),"wght" 500;
  font-weight:500;font-size:21px;letter-spacing:-.012em;color:var(--terra-deep);margin:7px 0 5px;overflow-wrap:anywhere;}
.tflight .tfa:hover{text-decoration:underline;}
.tflight p{margin:2px 0 0;font-size:14.5px;line-height:1.5;color:var(--ink3);}
.tflight .copybtn{flex:none;}

/* two apps */
.twoapp{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:26px 0;max-width:70ch;}
.twoapp .card{background:var(--card);border:1px solid rgba(160,67,49,.18);border-radius:18px;padding:22px;}
.twoapp .card.is-sensor{border-color:rgba(28,26,20,.16);}
.twoapp .card .top{display:flex;align-items:center;gap:13px;}
.twoapp .card .ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;flex:none;overflow:hidden;}
.twoapp .card .ico img{width:100%;height:100%;object-fit:cover;display:block;}
.twoapp .card.is-care .ico{background:var(--terra);}
.twoapp .card.is-sensor .ico{background:#2A130C;}
.twoapp .card .ico span{font-family:var(--font-serif);font-variation-settings:"opsz" 40,"SOFT" 100,"wght" 500;
  color:#F3E9DC;font-size:32px;line-height:1;margin-top:1px;}
.twoapp .card .nm{font-family:var(--font-serif);font-variation-settings:"opsz" 40,"SOFT" var(--soft),"wght" 500;
  font-weight:500;font-size:19px;letter-spacing:-.01em;line-height:1.1;}
.twoapp .card .role{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;margin-top:3px;}
.twoapp .card.is-care .role{color:var(--terra);}
.twoapp .card.is-sensor .role{color:var(--ink3);}
.twoapp .card p{font-size:15.5px;line-height:1.55;color:var(--ink2);margin:14px 0 0;}

/* table */
.ztable{margin:24px 0;border:1px solid rgba(160,67,49,.16);border-radius:18px;overflow:hidden;background:var(--card);}
.zrow{display:grid;grid-template-columns:210px 1fr 1fr;border-top:1px solid rgba(160,67,49,.12);}
.zrow:first-child{border-top:0;}
.zrow.head{background:var(--card-alt);}
.zrow.head .zc{font-family:var(--font-mono);font-size:11.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--ink3);}
.zc{padding:18px 20px;font-size:16px;line-height:1.5;color:var(--ink2);border-left:1px solid rgba(160,67,49,.08);}
.zc:first-child{border-left:0;}
.zc .act{display:flex;align-items:center;gap:10px;font-family:var(--font-serif);
  font-variation-settings:"opsz" 40,"SOFT" var(--soft),"wght" 500;font-weight:500;font-size:19px;letter-spacing:-.01em;color:var(--ink);}
.zc .dot{width:9px;height:9px;border-radius:50%;flex:none;}
.dot.g1{background:var(--moss);}.dot.g2{background:var(--terra);}.dot.g3{background:var(--ink);}

/* detectors */
.detgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:18px 0;max-width:70ch;}
.det{background:var(--card);border:1px solid rgba(160,67,49,.16);border-radius:16px;padding:18px 20px;}
.det .dh{display:flex;align-items:center;gap:11px;}
.det .dd{width:11px;height:11px;border-radius:50%;flex:none;}
.det .dn{font-family:var(--font-serif);font-variation-settings:"opsz" 40,"SOFT" var(--soft),"wght" 500;
  font-weight:500;font-size:19px;letter-spacing:-.01em;color:var(--ink);}
.det p{font-size:15.5px;line-height:1.5;color:var(--ink2);margin:10px 0 0;}

/* kinds */
.kinds{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:20px 0;max-width:70ch;}
.kind{border-radius:18px;padding:22px;border:1px solid rgba(160,67,49,.18);background:var(--card);}
.kind .tag{font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  display:inline-flex;align-items:center;gap:7px;padding:7px 13px;border-radius:999px;}
.kind.live .tag{background:var(--terra-soft);color:var(--terra-deep);}
.kind.sched .tag{background:var(--blue-soft);color:#41526e;}
.kind h4{font-family:var(--font-serif);font-variation-settings:"opsz" 60,"SOFT" var(--soft),"wght" 500;
  font-weight:500;font-size:21px;letter-spacing:-.012em;margin:14px 0 6px;}
.kind p{font-size:16px;line-height:1.55;color:var(--ink2);margin:6px 0;}
.kind .ex{font-style:italic;color:var(--terra);font-family:var(--font-serif);
  font-variation-settings:"opsz" 36,"SOFT" var(--soft),"wght" 500;font-size:16.5px;margin-top:10px;display:block;}

/* FAQ */
.faq{margin:20px 0;max-width:72ch;border-top:1px solid rgba(160,67,49,.14);}
.faq details{border-bottom:1px solid rgba(160,67,49,.14);}
.faq summary{list-style:none;cursor:pointer;padding:21px 4px;display:flex;align-items:center;gap:16px;
  font-family:var(--font-serif);font-variation-settings:"opsz" 60,"SOFT" var(--soft),"wght" 500;
  font-weight:500;font-size:21px;letter-spacing:-.014em;color:var(--ink);}
.faq summary::-webkit-details-marker{display:none;}
.faq summary .pm{margin-left:auto;flex:none;width:27px;height:27px;border-radius:50%;
  border:1px solid rgba(160,67,49,.3);display:grid;place-items:center;color:var(--terra);
  transition:transform var(--d-base) var(--ease-apple),background var(--d-fast);font-size:17px;}
.faq details[open] summary .pm{transform:rotate(45deg);background:var(--terra-soft);}
.faq .ans{padding:0 4px 22px 42px;font-size:16.5px;line-height:1.65;color:var(--ink2);max-width:60ch;}
.faq .ans p{margin:0 0 10px;}

/* support */
.support{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:24px 0;max-width:none;}
.copyrow{display:flex;align-items:center;gap:12px;background:var(--card);border:1px solid rgba(160,67,49,.2);
  border-radius:14px;padding:15px 17px;}
.copyrow .cl{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink3);}
.copyrow .cv{font-size:15.5px;color:var(--ink);margin-top:4px;word-break:normal;overflow-wrap:anywhere;}
.copyrow .grow{min-width:0;margin-right:auto;}
.copybtn{flex:none;border:1px solid rgba(160,67,49,.28);background:transparent;color:var(--terra-deep);
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;
  padding:9px 13px;border-radius:999px;cursor:pointer;transition:background var(--d-fast),color var(--d-fast);}
.copybtn:hover{background:var(--terra-deep);color:#fff;}
.copybtn.done{background:var(--moss);border-color:var(--moss);color:#fff;}

footer.foot{padding:56px 0 92px;}
footer.foot .word{font-family:var(--font-serif);font-variation-settings:"opsz" 144,"SOFT" var(--soft),"wght" 500;
  font-weight:500;font-size:32px;letter-spacing:-.025em;}
footer.foot .fine{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--ink3);margin-top:10px;}
footer.foot .disc{font-size:13.5px;color:var(--ink3);margin-top:18px;max-width:62ch;line-height:1.55;}

/* back to top */
#totop{position:fixed;right:26px;bottom:26px;width:48px;height:48px;border-radius:50%;background:var(--terra-deep);
  color:#fff;border:0;cursor:pointer;display:grid;place-items:center;box-shadow:0 12px 28px -12px rgba(122,47,31,.7);
  opacity:0;pointer-events:none;transform:translateY(10px);transition:opacity var(--d-base),transform var(--d-base);z-index:90;}
#totop.show{opacity:1;pointer-events:auto;transform:translateY(0);}
#totop svg{width:20px;height:20px;}

/* ============================================================ SCROLL REVEAL */
/* hidden state only applies once JS is confirmed running (html.js).
   Without JS, or if the observer never fires, content stays visible. */
html.js .reveal{opacity:0;transform:translateY(24px);
  transition:opacity .7s var(--ease-apple),transform .7s var(--ease-apple);}
html.js .reveal.in{opacity:1;transform:none;}

/* ============================================================ RESPONSIVE */
@media(max-width:980px){
  .shell{grid-template-columns:1fr;}
  .rail{display:none;}
  /* safety net: never allow sideways scroll on phones (rail is hidden here,
     so this can't break the desktop sticky sidebar) */
  body{overflow-x:hidden;}
  .topbar{display:flex;position:sticky;top:0;z-index:100;align-items:center;gap:14px;
    padding:12px clamp(16px,4vw,28px);background:rgba(244,236,224,.92);
    backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid rgba(160,67,49,.14);}
  .topbar .brand .wm{font-size:21px;}
  .topbar .tocbtn{margin-left:auto;display:inline-flex;align-items:center;gap:7px;
    font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.1em;
    text-transform:uppercase;color:var(--terra-deep);background:var(--card);border:1px solid rgba(160,67,49,.24);
    border-radius:999px;padding:9px 15px;cursor:pointer;}
  .topbar .tocbtn .chev{width:13px;height:13px;flex:none;transition:transform var(--d-base) var(--ease-apple);}
  .topbar .tocbtn.is-open .chev{transform:rotate(180deg);}

  /* ---- transparent dropdown nav (replaces the slide-in drawer) ---- */
  .menu{display:block;position:fixed;left:0;right:0;top:0;z-index:95;overflow-y:auto;
    background:rgba(247,240,230,.80);backdrop-filter:saturate(150%) blur(18px);
    -webkit-backdrop-filter:saturate(150%) blur(18px);
    border-bottom:1px solid rgba(160,67,49,.18);box-shadow:0 30px 50px -28px rgba(28,26,20,.5);
    opacity:0;transform:translateY(-12px);pointer-events:none;
    transition:opacity .34s var(--ease-apple),transform .34s var(--ease-apple);}
  .menu.open{opacity:1;transform:none;pointer-events:auto;}
  .menu-inner{padding:12px clamp(16px,4vw,28px) 20px;}
  .menu .tabs{margin:4px 0 12px;}
  /* pills */
  .menu .toc{border-top:0;}
  .menu .toc>li{border-bottom:0;}
  .menu .toc a{border-radius:12px;padding:11px 14px;font-size:16px;}
  .menu .toc a .n{width:16px;}
  .menu .toc a.active{background:var(--terra-soft);color:var(--terra-deep);box-shadow:none;font-weight:600;}
  .menu .toc .sub-list{margin:1px 0 6px;padding:0 0 0 22px;}
  .menu .toc .sub-list a{padding:8px 14px;border-radius:10px;font-size:14.5px;}
  .menu .toc .sub-list a.active{background:var(--terra-soft);color:var(--terra-deep);font-weight:500;}
}
@media(max-width:620px){
  .twoapp,.support,.detgrid,.kinds,.kit{grid-template-columns:1fr;}
  .tflight{flex-direction:column;align-items:flex-start;}
  .tflight .tfbody{margin-right:0;}
  .zrow{grid-template-columns:1fr;}
  .zc{border-left:0;border-top:1px solid rgba(160,67,49,.08);}
  .zrow .zc:first-child{border-top:0;}
  .zrow.head{display:none;}
  .steps::before{display:none;}
  .step{grid-template-columns:1fr;gap:12px;}
  .step .badge::before{width:38px;height:38px;font-size:18px;box-shadow:0 6px 16px -8px rgba(122,47,31,.7);}
  .shot,.shot.w-sm,.shot.w-lg,.shot.w-xl,.shot.photo-shot{width:100%;max-width:320px;margin-inline:auto;}
  /* single phones (face enrollment, confirm, patient settings, per-sensor) read smaller */
  .shot.solo{max-width:248px;}
  /* setup-time pill drops to its own line instead of hanging off the heading */
  .section-head h2 .timer{display:flex;width:fit-content;margin:14px 0 0;transform:none;}
  /* keep the heading readable when the pill would otherwise crowd it */
  .section-head h2{font-size:clamp(30px,8.5vw,40px);}
  /* carousels: smaller phone + arrows so a multi-image step stays centred
     and the chevrons never crowd or clip the screenshot */
  .carousel{max-width:360px;}
  /* each slide must fill the viewport exactly; otherwise the mobile
     .shot{max-width:320px} rule caps the slide and the next one peeks in */
  .shots.carousel .cslide{width:100%;max-width:none;}
  .carousel .cslide .phone{width:min(220px,62vw);}
  .carousel .cslide figcaption{font-size:15px;}
  .cbtn{width:36px;height:36px;}
  .cbtn svg{width:16px;height:16px;}
  /* comparison photos (front vs rear) stack cleanly */
  .shots{gap:18px;}
  /* hero scales down so the title never gets cropped on small phones */
  .hero h1{font-size:clamp(46px,15vw,62px);}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{transition-duration:.001ms !important;}
  .ret{animation:none;}
  .reveal{opacity:1;transform:none;}
  .aura .b{animation:none;}
}
@media print{
  .aura{display:none;}
  .rail,.topbar,#totop,#progress{display:none;}
  .shell{display:block;}
  .section{break-inside:avoid;}
  .ret{animation:none;}
  .reveal{opacity:1;transform:none;}
}