/* ecomconsulting one-pager. Single layer: tokens in redesign-tokens.css, no override stacks.
   UI polish pass 2026-10-05 (S1–S9, E1–E6 from the UI audit). */
@import url('redesign-tokens.css');

@font-face{font-family:Outfit;src:url('assets/fonts/Outfit-Variable.woff2') format('woff2');font-weight:100 900;font-display:swap}
@font-face{font-family:Anton;src:url('assets/fonts/Anton-Regular.ttf') format('truetype');font-weight:400;font-display:swap}
@font-face{font-family:Inter;src:url('assets/fonts/Inter-Regular.ttf') format('truetype');font-weight:400;font-style:normal;font-display:swap}

/* ---------- Base ---------- */
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:120px;overflow-x:clip;interpolate-size:allow-keywords}
body{margin:0;overflow-x:clip;background:var(--color-paper);color:var(--color-ink);font-family:var(--font-body);font-size:18px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}
button,input,textarea{font:inherit}
button,a,input,summary,textarea{-webkit-tap-highlight-color:var(--color-clear)}
button,a{touch-action:manipulation}
button{color:inherit;border:0}
button,a,summary{cursor:pointer}
button:disabled{opacity:.3;cursor:not-allowed}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,p,figure{margin:0}
[hidden]{display:none!important}

/* Display type. Line-height stays ≥1.08: Anton's accents on Å/Ä/Ö need the room. */
h1,h2{font-family:var(--font-display);font-weight:400;text-transform:uppercase;line-height:1.08;letter-spacing:-.01em;hyphens:auto;overflow-wrap:break-word;text-wrap:balance;min-width:0}
h1{font-size:var(--text-display)}
h2{font-size:var(--text-heading)}
h3{font-family:var(--font-body);font-size:26px;line-height:1.2;font-weight:500;letter-spacing:-.015em;text-wrap:balance}

/* Reading type: three levels. */
p{font-family:var(--font-reading);font-weight:400;font-size:var(--text-body);line-height:1.6;letter-spacing:0;color:var(--color-reading);text-wrap:pretty}
.lede{font-size:var(--text-lede);line-height:1.5;max-width:var(--measure)}
.body-copy{max-width:var(--measure)}
.detail{font-size:var(--text-detail);line-height:1.5}

/* Focus: one style for controls, a soft ring for fields. */
:focus-visible{outline:2px solid var(--color-ink);outline-offset:3px}

.shell{width:100%;max-width:1720px;margin-inline:auto;padding-inline:var(--page-gutter)}
.skip{position:fixed;top:8px;left:8px;z-index:100;background:var(--color-ink);color:var(--color-white);padding:12px;transform:translateY(-180%)}
.skip:focus{transform:none}

/* ---------- Icons (S4) and arrow swap (E1) ---------- */
.icon{display:block;width:100%;height:100%;flex:none}
.ico{--dx:1;--dy:0;position:relative;display:inline-block;width:16px;height:16px;flex:none;overflow:clip;vertical-align:middle}
.ico[data-dir="l"]{--dx:-1;--dy:0}
.ico[data-dir="u"]{--dx:0;--dy:-1}
.ico[data-dir="ur"]{--dx:1;--dy:-1}
.ico svg{position:absolute;inset:0;width:100%;height:100%;transition:transform var(--dur-icon) var(--ease-out)}
.ico svg+svg{transform:translate(calc(var(--dx) * -110%),calc(var(--dy) * -110%))}
@media(hover:hover){
  :is(.button,.text-link,.circle:not(:disabled),.media-caption a,.contact-email,.footer-bottom a):hover .ico svg:first-child{transform:translate(calc(var(--dx) * 110%),calc(var(--dy) * 110%))}
  :is(.button,.text-link,.circle:not(:disabled),.media-caption a,.contact-email,.footer-bottom a):hover .ico svg+svg{transform:translate(0,0)}
}

/* ---------- Buttons (S5) ---------- */
.button{min-height:48px;display:inline-flex;align-items:center;justify-content:center;gap:12px;padding:12px 26px;background:var(--color-accent);color:var(--color-ink);border:1px solid var(--color-accent);border-radius:var(--radius-pill);font-size:16px;white-space:nowrap;line-height:1.3;transition:background-color var(--dur-short),border-color var(--dur-short),color var(--dur-short),transform var(--dur-short) var(--ease-out)}
.button-outline{background:var(--color-clear);border-color:var(--color-ink);color:var(--color-ink)}
.button:active{transform:scale(.98)}
.button-hero{min-height:56px;padding-inline:28px}
.text-link{display:inline-flex;align-items:center;gap:12px;min-height:44px;font-size:16px;text-decoration:underline;text-decoration-color:var(--color-accent);text-decoration-thickness:2px;text-underline-offset:5px}
.circle{width:48px;height:48px;flex:none;border:1px solid var(--color-ink);border-radius:50%;background:var(--color-clear);display:inline-flex;align-items:center;justify-content:center;transition:background-color var(--dur-short),color var(--dur-short),border-color var(--dur-short)}
.circle .ico{width:20px;height:20px}
@media(hover:hover){
  .button:not(.button-outline):hover{background:var(--color-accent-hover);border-color:var(--color-accent-hover)}
  .button-outline:hover,.circle:not(:disabled):hover{background:var(--color-ink);border-color:var(--color-ink);color:var(--color-white)}
}

/* ---------- Eyebrow ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:14px;background:var(--color-band);padding:8px 13px;border-radius:var(--radius-sm);margin-bottom:28px;line-height:1.4}
.eyebrow i{display:block;width:7px;height:7px;border-radius:50%;background:var(--color-accent);flex:none}

/* ---------- Sections: one vertical rhythm (S9), floating bands (E6) ---------- */
.section-space{padding-block:var(--section-space)}
.section-band{background:var(--color-band);padding-block:var(--section-space);margin-inline:var(--band-inset);border-radius:var(--radius-surface)}
.section-band .eyebrow{background:var(--color-paper)}
.section-band .shell{max-width:calc(1720px - 2 * var(--band-inset));padding-inline:calc(var(--page-gutter) - var(--band-inset))}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:var(--head-gap)}
.section-head p{max-width:430px}

/* ---------- Header (S1, E2) ---------- */
.header-wrap{height:104px;position:sticky;top:0;z-index:30;padding:12px 20px;pointer-events:none;transition:transform 300ms var(--ease-out)}
.header-wrap.is-hidden{transform:translateY(calc(-100% - 40px))}
.header{height:80px;max-width:1680px;margin:auto;padding-block:0;padding-inline:max(16px,calc(var(--page-gutter) - 20px));display:flex;align-items:center;justify-content:space-between;gap:32px;background:var(--color-paper);border-radius:var(--radius-lg);box-shadow:0 5px 30px var(--color-clear);pointer-events:auto;position:relative;transition:box-shadow 300ms}
.header-wrap.is-scrolled .header{box-shadow:0 5px 30px var(--color-shadow)}
.brand{flex:none;display:flex;align-items:center;min-height:44px}
.brand-wordmark{font-family:var(--font-display);font-weight:400;font-size:28px;letter-spacing:-.01em;line-height:1.15;color:var(--color-reading);white-space:nowrap}
.brand-dot{color:var(--color-accent)}
.desktop-nav{display:flex;gap:36px;align-items:center;font-size:15px}
.desktop-nav a{display:flex;align-items:center;min-height:44px;position:relative;white-space:nowrap}
.desktop-nav a::after{content:'';position:absolute;left:0;right:0;bottom:9px;height:1.5px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform 280ms var(--ease-out)}
.desktop-nav a[aria-current]::after{transform:scaleX(1)}
@media(hover:hover){.desktop-nav a:hover::after{transform:scaleX(1)}}
.count{background:var(--color-accent);border-radius:var(--radius-pill);font-size:10px;padding:0 5px;position:absolute;right:-13px;top:0}
.header-contact{font-size:14px;min-height:44px;padding:10px 20px}
.menu-toggle{display:none}

/* ---------- Hero ---------- */
.hero{display:grid;grid-template-columns:minmax(0,1.07fr) minmax(0,1fr);gap:6%;align-items:center;padding-top:38px;padding-bottom:52px}
.hero-copy{padding-block:22px}
.hero .eyebrow{margin-bottom:26px}
.hero h1{margin-bottom:29px;line-height:1.1}
.hero-areas{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:22px 0 0;padding:0}
.hero-areas li{display:inline-flex;align-items:center;gap:8px;padding:7px 14px 7px 12px;border-radius:var(--radius-pill);background:var(--color-band);font-size:14px;line-height:1.3}
.hero-areas li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--color-accent)}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}
.hero-media{height:620px;border-radius:var(--radius-lg);position:relative;overflow:clip;background:var(--color-band)}
.hero-media video{width:100%;height:100%;object-fit:cover;object-position:center}
.video-toggle{position:absolute;top:18px;right:18px;width:44px;height:44px;border-radius:50%;background:var(--color-white);display:grid;place-items:center}
.video-toggle .icon,.logo-pause .icon{width:16px;height:16px}
.media-caption{position:absolute;bottom:14px;right:14px;left:14px;display:flex;align-items:center;gap:18px;padding:18px;background:var(--color-white);border-radius:var(--radius-md);font-size:14px;line-height:1.3}
.media-caption img{width:80px;max-height:42px;object-fit:contain}
.media-caption a{margin-left:auto;width:44px;min-height:44px;display:flex;align-items:center;justify-content:center}
.media-caption a .ico{width:20px;height:20px}

/* ---------- Logo banner (S8) ---------- */
.logo-banner{position:relative;display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding-block:40px;padding-right:max(12px,calc(var(--page-gutter) - 16px));background:var(--color-paper)}
.logo-title{flex:0 0 100%;margin:0 0 4px;padding-left:var(--page-gutter);font-family:var(--font-body);font-size:14px;color:var(--color-muted)}
.logo-window{overflow:clip;flex:1;min-width:0;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.logo-belt{display:flex;width:max-content;animation:logo-glide 42s linear infinite}
.logo-group{display:flex;align-items:center;gap:76px;list-style:none;padding:0 76px 0 0;margin:0;flex:none}
.logo-group li{--s:1;display:flex;align-items:center;justify-content:center;width:170px;height:76px;flex:none}
.logo-group img{width:100%;height:48px;object-fit:contain;filter:grayscale(1) brightness(0);opacity:.7;transform:scale(var(--s));transition:opacity 400ms}
.logo-group img.logo-tall{height:70px;width:90px}
.logo-group img.logo-wide{width:170px;height:46px}
.logo-banner:is(:hover,:focus-within,.is-paused) img{opacity:1}
.logo-banner:is(:hover,:focus-within,.is-paused) .logo-belt{animation-play-state:paused}
.logo-pause{position:relative;flex:none;display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--color-paper);color:var(--color-ink);box-shadow:0 0 0 1px var(--color-rule);opacity:.8;transition:opacity var(--dur-short)}
.logo-pause::before{content:'';position:absolute;inset:-6px}
.logo-pause:hover,.logo-pause:focus-visible,.logo-banner.is-paused .logo-pause{opacity:1}
.logo-pause .icon{width:14px;height:14px}
.logo-pause:active{transform:scale(.96)}
@keyframes logo-glide{to{transform:translateX(-50%)}}

/* ---------- Projects (E5) ---------- */
.projects h2{position:relative;display:inline-block;padding-right:34px}
.projects .section-head>div:first-child{display:flex;flex-direction:column;align-items:flex-start}
.heading-count{position:absolute;right:0;top:-14px;font-family:var(--font-body);font-size:14px;letter-spacing:0;background:var(--color-accent);padding:4px 11px;border-radius:var(--radius-pill)}
.project-controls{display:flex;align-items:center;gap:12px}
.rail-status{display:flex;align-items:center;gap:16px;margin-right:12px;font-size:14px;font-variant-numeric:tabular-nums;color:var(--color-reading)}
.rail-progress{position:relative;width:96px;height:2px;background:var(--color-rule);overflow:clip}
.rail-progress i{position:absolute;inset:0 auto 0 0;width:25%;background:var(--color-ink);transition:transform 160ms linear}
.project-track{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;padding-inline:max(calc(var(--page-gutter) - var(--band-inset)),calc((100% - (1720px - 2 * var(--band-inset))) / 2 + var(--page-gutter) - var(--band-inset)));scroll-padding-inline:max(calc(var(--page-gutter) - var(--band-inset)),calc((100% - (1720px - 2 * var(--band-inset))) / 2 + var(--page-gutter) - var(--band-inset)));scrollbar-width:none;padding-bottom:12px}
.project-track::-webkit-scrollbar{display:none}
.project-card{flex:0 0 370px;min-width:0;background:var(--color-paper);border-radius:var(--radius-lg);padding:8px;scroll-snap-align:start}
.project-photo{height:400px;border-radius:var(--radius-md);overflow:clip;position:relative}
.project-photo img{width:100%;height:100%;object-fit:cover}
.photo-tag{position:absolute;left:12px;top:12px;border-radius:var(--radius-sm);padding:8px 12px;font-size:13px;background:var(--color-white)}
.project-info{padding:20px 14px 16px}
.project-info h3{font-size:27px;margin-bottom:10px}
.project-info p{min-height:63px;max-width:310px}
.tags{display:flex;flex-wrap:wrap;gap:7px}
.tags span{border:1px solid var(--color-ink);border-radius:var(--radius-pill);padding:6px 12px;font-size:14px;line-height:1.2}
.project-info .tags{margin-top:20px;gap:5px}
.project-info .tags span{border:0;background:var(--color-band);font-size:11px;padding:6px 10px}
.project-bottom{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-top:25px;font-size:14px;color:var(--color-muted)}

/* ---------- Services (E3) ---------- */
.services{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:9%}
.section-intro h2{margin-bottom:26px}
.section-intro p{margin-bottom:20px}
.section-intro .button{margin-top:16px}
.service{background:linear-gradient(var(--color-ink),var(--color-ink)) 0 0/100% 1px no-repeat;transition:background-size 900ms var(--ease-out)}
.service-list{padding-bottom:1px;background:linear-gradient(var(--color-ink),var(--color-ink)) 0 100%/100% 1px no-repeat}
.service summary{display:flex;align-items:center;justify-content:space-between;gap:20px;list-style:none;padding:29px 0}
.service summary::-webkit-details-marker{display:none}
.service h3{font-size:clamp(22px,2.05vw,33px);transition:translate 280ms var(--ease-out)}
@media(hover:hover){.service summary:hover h3{translate:4px 0}}
.plus{width:36px;height:36px;border-radius:50%;background:var(--color-band);position:relative;flex:none;transition:background-color var(--dur-short)}
.plus::before,.plus::after{content:'';position:absolute;left:11px;top:17.25px;height:1.5px;width:14px;border-radius:1px;background:var(--color-ink)}
.plus::after{transform:rotate(90deg);transition:transform var(--dur-icon) var(--ease-out)}
.service[open] .plus{background:var(--color-accent)}
.service[open] .plus::after{transform:rotate(0deg)}
.service-content{padding:0 0 32px;transition:opacity 300ms ease 80ms}
.service:not([open]) .service-content{opacity:0}
.service-content p{max-width:540px;margin-bottom:24px}
.service-content .text-link{margin-top:24px}
.service::details-content{block-size:0;overflow:clip;transition:block-size 360ms var(--ease-out),content-visibility 360ms allow-discrete}
.service[open]::details-content{block-size:auto}

/* ---------- Platforms ---------- */
.platform-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:26px}
.platform-grid article{padding:30px 0 0;background:linear-gradient(var(--line,var(--color-rule)),var(--line,var(--color-rule))) 0 0/100% 1px no-repeat;transition:background-size 900ms var(--ease-out),opacity 600ms var(--ease-out),transform 600ms var(--ease-out)}
.platform-grid article:first-child{--line:var(--color-accent)}
.platform-grid img{height:52px;max-width:155px;width:auto;max-height:52px;object-fit:contain;object-position:left;filter:grayscale(1)}
.platform-grid img[alt="Shopify"]{filter:none}
.platform-grid p{margin-top:23px}
.platform-brand{display:flex;align-items:center;gap:12px;height:54px}
.platform-brand span{font-size:26px;letter-spacing:-.03em}
.platform-brand img{max-width:60px}

/* ---------- Problems ---------- */
.problem-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:80px;row-gap:44px}
.problem-grid article{padding:24px 0 0;display:grid;grid-template-columns:38px minmax(0,1fr);column-gap:18px;background:linear-gradient(var(--color-rule),var(--color-rule)) 0 0/100% 1px no-repeat;transition:background-size 900ms var(--ease-out)}
.problem-mark{width:28px;height:28px;margin-top:2px}
.problem-grid h3{font-size:30px;margin-bottom:17px}
.problem-grid p{grid-column:2;max-width:480px}

/* ---------- About ---------- */
.about-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:10%}
.about h2{font-size:clamp(60px,6.4vw,102px);line-height:1.1}
.about-copy{padding-top:8px}
.about-copy p{margin-bottom:23px}
.about-copy .button{margin-top:10px}

/* ---------- Contact (S6) ---------- */
.contact{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:10%;align-items:start}
.contact h2{margin-bottom:28px}
.contact-intro>p{max-width:470px}
.audit-note{margin-top:36px;padding-top:24px;border-top:3px solid var(--color-accent);max-width:460px}
.audit-note h3{font-size:22px;margin-bottom:12px}
.contact-email{display:inline-flex;align-items:center;gap:12px;margin-top:32px;font-size:18px;text-decoration:underline;text-underline-offset:5px;overflow-wrap:anywhere}
.contact-form{padding-top:5px}
.intent-field{margin:0 0 28px;padding:0;border:0;display:flex;gap:10px;flex-wrap:wrap}
.intent-field legend{font-size:16px;margin-bottom:14px}
.intent-field label{position:relative;cursor:pointer}
.intent-field input{position:absolute;opacity:0;width:1px;height:1px}
.intent-field span{display:block;padding:11px 22px;border:1px solid var(--color-rule);border-radius:var(--radius-pill);font-size:15px;transition:background-color var(--dur-short),border-color var(--dur-short)}
.intent-field input:checked+span{background:var(--color-accent);border-color:var(--color-accent);color:var(--color-ink)}
.intent-field input:focus-visible+span{outline:2px solid var(--color-ink);outline-offset:3px}
@media(hover:hover){.intent-field input:not(:checked)+span:hover{border-color:var(--color-rule-strong)}}
.field{display:block;margin-bottom:22px;font-size:15px}
.optional{color:var(--color-muted);font-size:13px}
.field input,.field textarea{display:block;width:100%;padding:15px 17px;border:1px solid var(--color-rule);border-radius:var(--radius-sm);background:var(--color-paper);color:var(--color-ink);margin-top:9px;font-size:16px;transition:border-color 160ms,box-shadow 160ms}
.field textarea{resize:vertical;min-height:125px}
.field input::placeholder,.field textarea::placeholder{color:var(--color-muted)}
@media(hover:hover){.field input:hover,.field textarea:hover{border-color:var(--color-rule-strong)}}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--color-ink);box-shadow:0 0 0 4px var(--color-accent-soft)}
.field [aria-invalid="true"]{border-color:var(--color-error)}
.field [aria-invalid="true"]:focus{border-color:var(--color-error);box-shadow:0 0 0 4px rgb(168 36 36 / 12%)}
.field-error{display:block;margin-top:8px;font-family:var(--font-reading);font-size:13px;color:var(--color-error)}
.form-submit{width:100%;justify-content:space-between}
.form-note{margin-top:12px;max-width:360px;color:var(--color-muted)}
.form-status{margin-top:16px;padding:14px 16px;border-radius:var(--radius-sm);outline:none}.form-status[data-state="success"]{background:var(--color-accent-soft);color:var(--color-ink)}.form-status[data-state="error"]{background:rgb(168 36 36 / 8%);color:var(--color-error)}.form-submit:disabled{opacity:.6;cursor:progress}
.form-status:empty{display:none}
.privacy-link{display:inline-flex;align-items:center;font-size:13px;min-height:44px;margin-top:10px;text-decoration:underline;text-underline-offset:4px;color:var(--color-muted)}

/* ---------- Footer (E6) ---------- */
.footer{background:var(--color-band);padding-block:55px 28px;margin:0 var(--band-inset) var(--band-inset);border-radius:var(--radius-surface)}
.footer .shell{max-width:calc(1720px - 2 * var(--band-inset));padding-inline:calc(var(--page-gutter) - var(--band-inset))}
.footer-top{display:flex;justify-content:space-between;align-items:center;gap:40px;padding-bottom:40px;border-bottom:1px solid var(--color-rule)}
.footer-top p{margin-left:auto}
.footer-bottom{display:flex;justify-content:space-between;gap:24px;padding-top:25px;font-size:12px;color:var(--color-muted);align-items:center}
.footer-bottom>div{display:flex;gap:24px}
.footer-bottom a{display:inline-flex;align-items:center;gap:6px;min-height:44px;white-space:nowrap;text-decoration:underline;text-decoration-color:var(--color-clear);text-underline-offset:4px;transition:text-decoration-color var(--dur-short)}
.footer-bottom a .ico{width:12px;height:12px}
@media(hover:hover){.footer-bottom a:hover{text-decoration-color:currentColor}}

/* ---------- Reveal system (E4). JS adds .rv only to elements below the fold. ---------- */
.rv-line{display:block;clip-path:inset(-.3em -.1em 0)}
.rv-line-inner{display:block}
.rv .rv-line-inner{transform:translateY(130%)}
.rv-text,.rv-item{transition:opacity 600ms var(--ease-out),transform 600ms var(--ease-out),background-size 900ms var(--ease-out),background-color var(--dur-short),border-color var(--dur-short),color var(--dur-short)}
.rv.rv-text,.rv.rv-item{opacity:0;transform:translateY(12px)}
.rv.service,.rv.problem-grid-item,.rv.platform-item{background-size:0% 1px}
.rv-line-inner{transition:transform 760ms var(--ease-out)}
.is-in .rv-line-inner,.is-in.rv-text,.is-in.rv-item{transform:none;opacity:1}
.is-in.service,.is-in.problem-grid-item,.is-in.platform-item{background-size:100% 1px}

/* ---------- ≥1600 ---------- */
@media(min-width:1600px){.hero-media{height:720px}.project-card{flex-basis:410px}.project-photo{height:445px}}

/* ---------- ≤1150 ---------- */
@media(max-width:1150px){
  .desktop-nav{gap:22px}.header{gap:20px}
  .hero{gap:4%}.hero-media{height:570px}.hero h1{font-size:clamp(54px,5.75vw,75px)}
  .actions .button{padding-inline:20px;font-size:14px}
  .services{gap:6%}.contact{gap:7%}
}

/* ---------- ≤950 ---------- */
@media(max-width:950px){
  :root{--band-inset:12px}
  .desktop-nav,.header-contact{display:none}
  .menu-toggle{display:flex;align-items:center;gap:12px;background:var(--color-clear);font-size:15px;min-height:44px;padding:8px}
  .menu-icon{width:20px;height:10px;border-top:1.5px solid var(--color-ink);border-bottom:1.5px solid var(--color-ink)}
  .header-wrap{height:88px;padding:8px 12px}
  .header{height:70px;padding-inline:max(16px,calc(var(--page-gutter) - 12px))}
  .mobile-menu{position:absolute;left:0;right:0;top:78px;background:var(--color-paper);border:1px solid var(--color-rule);padding:16px 24px;border-radius:var(--radius-md);box-shadow:0 15px 30px var(--color-shadow)}
  .mobile-menu a{display:block;padding:12px 0;font-size:18px}
  .hero{padding-top:30px;grid-template-columns:minmax(0,1fr) minmax(0,.88fr);gap:5%}
  .hero h1{font-size:clamp(44px,5.95vw,57px)}
  .hero .eyebrow{font-size:11px;padding:7px 9px}
  .hero-media{height:550px}
  .actions{gap:9px}
  .actions .button{font-size:13px;min-height:48px;padding:12px 18px;gap:10px}
  .media-caption{gap:10px;padding:12px;font-size:12px;left:10px;right:10px;bottom:10px}
  .media-caption img{width:65px}
  .services{grid-template-columns:minmax(0,1fr);gap:40px}
  .section-intro{max-width:640px}
  .section-head p{max-width:340px}
  .platform-grid{gap:22px}.platform-grid img{max-width:115px;height:38px}
  .problem-grid{column-gap:40px}.problem-grid h3{font-size:25px}
  .about-layout{gap:8%}
  .contact{grid-template-columns:minmax(0,1fr);gap:50px}
  .contact-intro>p,.audit-note{max-width:600px}
  .contact-form{max-width:650px}
  .footer-top{gap:25px}.footer-bottom{flex-wrap:wrap}
}

/* ---------- ≤640 ---------- */
@media(max-width:640px){
  :root{--page-gutter:22px;--text-heading:46px;--band-inset:8px;--radius-surface:20px;--head-gap:36px}
  html{scroll-padding-top:100px}
  .brand-wordmark{font-size:25px}
  .header{padding-inline:16px}
  .hero{display:flex;flex-direction:column;align-items:stretch;gap:30px;padding-top:26px;padding-bottom:30px}
  .hero-copy{padding-block:0}
  .hero h1{font-size:clamp(46px,10.4vw,66px);margin-bottom:24px}
  .hero .eyebrow{font-size:12px;margin-bottom:23px}
  .actions{margin-top:25px;gap:9px}
  .actions .button{font-size:13px;padding:13px 17px;gap:10px}
  .hero-media{height:430px}
  .media-caption{padding:14px;font-size:13px;gap:17px;left:12px;right:12px;bottom:12px}
  .media-caption img{width:72px}
  .logo-banner{padding-block:24px}
  .logo-group{gap:42px;padding-right:42px}
  .logo-group li{width:136px;height:66px}
  .logo-group img{height:37px}
  .logo-group img.logo-tall{height:60px;width:72px}
  .logo-group img.logo-wide{width:136px;height:37px}
  .logo-belt{animation-duration:36s}
  .logo-banner{padding-right:8px;gap:4px}
  .section-head{flex-direction:column;align-items:flex-start;gap:24px}
  .projects .section-head{flex-direction:row;align-items:end;gap:16px}
  .projects .eyebrow{margin-bottom:22px}
  .project-controls{gap:8px}
  .rail-status{margin-right:4px}
  .rail-progress{display:none}
  .circle{width:44px;height:44px}
  .project-card{flex-basis:82%}
  .project-track{gap:14px}
  .project-photo{height:340px}
  .project-info{padding:19px 12px 15px}
  .project-info h3{font-size:25px}
  .project-info .tags span{font-size:10px}
  .project-bottom{align-items:flex-start;flex-direction:column;gap:10px;margin-top:18px}
  .heading-count{font-size:11px;top:-12px;padding:4px 8px}
  .eyebrow{margin-bottom:24px}
  .section-intro .button{font-size:14px;padding-inline:22px}
  .services{gap:38px}
  .service summary{padding:23px 0;gap:12px}
  .plus{width:32px;height:32px}
  .plus::before,.plus::after{left:9px;top:15.25px}
  .service-content .tags span{font-size:12px}
  .platform-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 22px}
  .platform-grid img{height:35px;max-width:120px}
  .platform-grid p{margin-top:16px}
  .platform-brand{gap:8px}.platform-brand span{font-size:23px}.platform-brand img{max-width:34px}
  .problem-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .problem-grid article{grid-template-columns:26px minmax(0,1fr);column-gap:15px}
  .problem-mark{width:24px;height:24px}
  .problem-grid h3{font-size:25px}
  .about-layout{grid-template-columns:minmax(0,1fr);gap:38px}
  .about h2{font-size:clamp(52px,16vw,66px)}
  .contact{gap:40px}
  .contact-email{font-size:16px}
  .audit-note h3{font-size:21px}
  .footer{padding-block:38px 18px}
  .footer-top{flex-wrap:wrap;gap:20px;padding-bottom:28px}
  .footer-top p{order:3;flex-basis:100%;margin-left:0}
  .footer-top .circle{margin-left:auto}
  .footer-bottom{gap:12px;flex-direction:column;align-items:flex-start;padding-top:22px}
  .footer-bottom>div{gap:24px;order:3}
}

/* ---------- ≤360 ---------- */
@media(max-width:360px){
  :root{--page-gutter:18px}
  .brand-wordmark{font-size:23px}
  .hero h1{font-size:44px}
  .actions{flex-direction:column;align-items:stretch}
  .hero-media{height:380px}
  .hero .eyebrow{font-size:11px}
  .service h3{font-size:20px}
  .project-photo{height:300px}
  .project-info .tags{gap:4px}
  .project-info .tags span{font-size:9px;padding:5px 7px}
  .projects h2{font-size:43px}
  .rail-status{display:none}
  .media-caption{gap:9px}.media-caption img{width:60px}
  .contact-email{font-size:14px}
}

/* ---------- Experimental, desktop only (X2 sticky columns, X3 contact curtain, X4 rail drag) ---------- */
@media(min-width:951px){
  /* X2: heading column holds still while the list scrolls. */
  .section-intro{position:sticky;top:128px;align-self:start}
  .problems{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:9%;align-items:start}
  .problems .section-head{position:sticky;top:128px;flex-direction:column;align-items:flex-start;gap:36px;margin-bottom:0}
  .problem-grid{grid-template-columns:minmax(0,1fr);row-gap:48px}
  .problem-grid p{max-width:520px}
}
/* X3: JS adds .has-curtain only when About fits the viewport. */
.contact-stage{position:relative;z-index:1;background:var(--color-paper)}
.has-curtain .about{position:sticky;top:var(--about-top,0px);z-index:0}
.has-curtain .contact-stage{border-radius:var(--radius-surface) var(--radius-surface) 0 0;box-shadow:0 -18px 40px rgb(0 0 0 / 6%);margin-top:var(--band-inset)}
/* X4: mouse drag with inertia; native grab cursor, no custom cursor. */
@media(pointer:fine){
  .project-track{cursor:grab}
  .project-track.is-dragging{cursor:grabbing;scroll-snap-type:none;user-select:none}
  .project-track img{-webkit-user-drag:none;user-select:none}
}

/* ---------- Reduced motion ---------- */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .logo-window{overflow-x:auto;-webkit-mask-image:none;mask-image:none}
  .logo-group[aria-hidden]{display:none}
  .logo-pause{display:none}
  .header-wrap.is-hidden{transform:none}
}