/* Truvi landing. Night theme from the product (truvi-system.css §16 + airbnb-home.css dark). */
@font-face{font-family:'DM Sans';font-weight:100 1000;font-style:normal;font-display:swap;src:url('assets/fonts/dm-sans.woff2') format('woff2')}
@font-face{font-family:'Inter';font-weight:100 900;font-style:normal;font-display:swap;src:url('assets/fonts/inter.woff2') format('woff2')}

:root{
  color-scheme:light;
  /* AnswerThis palette: white ground, navy ink, grey text, maroon action */
  --display:'DM Sans',ui-sans-serif,system-ui,sans-serif;
  --text:'Inter',ui-sans-serif,system-ui,sans-serif;

  --s-display:clamp(34px,9vw,96px);
  --s-h2:clamp(30px,3.8vw,52px);
  --s-h3:clamp(21px,2vw,26px);
  --s-body:17px;
  --s-small:14px;
  --s-ui:13px;

  --gutter:clamp(16px,3vw,32px);
  --max:1280px;
  --radius:6px;
  --section:clamp(96px,14vw,200px);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
section[id],main[id]{scroll-margin-top:72px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font:400 var(--s-body)/1.55 var(--text);-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3{margin:0;font-family:var(--display);color:var(--ink)}
p{margin:0}
a{color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
::selection{background:var(--accent-tint);color:var(--ink)}
.skip{position:absolute;left:var(--gutter);top:-60px;background:var(--accent);color:var(--on-accent);padding:8px 12px;border-radius:var(--radius);z-index:50;font-weight:600}
.skip:focus{top:12px}


/* ---------- palettes (pick one, delete the others and the switcher before launch) ---------- */
/* Paper: cool paper ground, deep slate ink, verdigris accent. The product's own direction. */
/* Royal: faint lavender ground, royal purple ink and a brighter royal purple accent. */
:root,:root[data-palette="royal"]{
  --bg:#F7F6FB;--surface:#FBFAFE;--surface-2:#FFFFFF;--surface-3:#ECE8F6;--line:#DED8EC;
  --ink:#2E1A5E;--ink-2:#4B3A78;--muted:#6F6490;
  --accent:#5B2EBE;--accent-deep:#4A23A0;--accent-tint:#ECE6F9;--on-accent:#FFFFFF;
  --ok:#2F7A4A;--ok-tint:#E3F1E7;--warm:#8A6412;--warm-tint:#F6EFDC;--blue:#33608F;--blue-tint:#E7EEF7;
}
:root[data-palette="paper"]{
  --bg:#F3F5F4;--surface:#FAFBFA;--surface-2:#FFFFFF;--surface-3:#EAEEEC;--line:#DCE2DF;
  --ink:#1D2730;--ink-2:#45525B;--muted:#66737B;
  --accent:#2E7A6F;--accent-deep:#24655C;--accent-tint:#E2F0EC;--on-accent:#FFFFFF;
  --ok:#2F7A4A;--ok-tint:#E3F1E7;--warm:#8A6412;--warm-tint:#F6EFDC;--blue:#33608F;--blue-tint:#E7EEF7;
}
/* Slate: cool grey-blue ground, navy ink, electric blue accent. The design-tool feel. */
:root[data-palette="slate"]{
  --bg:#F5F7FA;--surface:#FBFCFD;--surface-2:#FFFFFF;--surface-3:#E9EDF3;--line:#DCE2EA;
  --ink:#131C33;--ink-2:#414C66;--muted:#64708A;
  --accent:#3456D5;--accent-deep:#2A46B3;--accent-tint:#E6EBFA;--on-accent:#FFFFFF;
  --ok:#1F7A4D;--ok-tint:#E1F2E8;--warm:#8A6412;--warm-tint:#F6EFDC;--blue:#3456D5;--blue-tint:#E6EBFA;
}
/* Ivory: warm ivory ground, charcoal ink, softened mauve accent. Nearest to the AnswerThis reference. */
:root[data-palette="ivory"]{
  --bg:#FAF9F6;--surface:#F4F2ED;--surface-2:#FFFFFF;--surface-3:#ECE9E2;--line:#E3DFD6;
  --ink:#24283A;--ink-2:#4D5160;--muted:#6E7280;
  --accent:#8E4A5E;--accent-deep:#773C4E;--accent-tint:#F5EBEE;--on-accent:#FFFFFF;
  --ok:#2F7A4A;--ok-tint:#E3F1E7;--warm:#8A6412;--warm-tint:#F6EFDC;--blue:#33608F;--blue-tint:#E7EEF7;
}
.dev-palette{position:fixed;right:12px;bottom:12px;z-index:60;display:flex;gap:4px;padding:4px;background:var(--surface-2);border:1px solid var(--line);border-radius:999px;box-shadow:0 6px 20px rgba(0,0,0,.08)}
.dev-palette button{border:0;border-radius:999px;padding:6px 12px;background:transparent;color:var(--ink-2);font:600 13px var(--text);cursor:pointer}
.dev-palette button[aria-pressed="true"]{background:var(--accent);color:var(--on-accent)}

/* ---------- shared type ---------- */
.display{font-size:var(--s-display);font-weight:500;line-height:.96;letter-spacing:-.035em}
.h2{font-size:var(--s-h2);font-weight:500;line-height:1.05;letter-spacing:-.025em;max-width:16ch}
h3{font-size:var(--s-h3);font-weight:500;line-height:1.2;letter-spacing:-.015em}
.statement{font-size:clamp(18px,1.5vw,21px);line-height:1.45;color:var(--ink-2);max-width:48ch}
.lede{font-size:clamp(18px,1.5vw,21px);line-height:1.5;color:var(--ink-2);max-width:44ch}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:var(--radius);background:var(--accent);color:var(--on-accent);font:600 16px/1 var(--text);text-decoration:none;transition:background .15s ease,transform .1s ease}
.btn:hover{background:var(--accent-deep)}
.btn:active{transform:translateY(1px)}
.btn-sm{min-height:40px;padding:0 16px;font-size:15px}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:28px;height:68px;padding:0 var(--gutter);background:var(--bg)}
.brand{display:flex;align-items:center;color:var(--accent);margin-right:auto;text-decoration:none}
.brand:hover{color:var(--accent-deep)}
.wordmark{display:block;height:26px;width:auto}
@media (max-width:640px){.wordmark{height:20px}}
.links{display:flex;gap:24px}
.links a{text-decoration:none;color:var(--ink-2);font-size:15px;font-weight:500;padding:6px 0}
.links a:hover{color:var(--ink)}
@media (max-width:640px){.links{display:none}.nav{height:60px}}


/* Wordmark entrance on desktop: each letter traces itself in, left to right. */
@media (min-width:900px) and (prefers-reduced-motion:no-preference){
  html.js .wordmark path{stroke-dasharray:1;stroke-dashoffset:1;opacity:0;animation:trace .7s cubic-bezier(.4,0,.2,1) both}
  html.js .wordmark path:nth-child(1){animation-delay:.05s}
  html.js .wordmark path:nth-child(2){animation-delay:.13s}
  html.js .wordmark path:nth-child(3){animation-delay:.21s}
  html.js .wordmark path:nth-child(4){animation-delay:.29s}
  html.js .wordmark path:nth-child(5){animation-delay:.37s}
  html.js .wordmark path:nth-child(6){animation-delay:.45s}
  html.js .wordmark path:nth-child(7){animation-delay:.53s}
  html.js .wordmark path:nth-child(8){animation-delay:.61s}
  html.js .wordmark path:nth-child(9){animation-delay:.69s}
  @keyframes trace{0%{stroke-dashoffset:1;opacity:0}12%{opacity:1}100%{stroke-dashoffset:0;opacity:1}}
}

/* ---------- hero: centred, headline / subtext / one button ---------- */
.hero{padding:clamp(72px,12vh,140px) var(--gutter) 0;max-width:var(--max);margin:0 auto;display:grid;justify-items:center;text-align:center}
.hero .display{display:grid;justify-items:center;font-size:clamp(34px,7.4vw,92px)}
.hero .l1,.hero .l2,.hero .l3{display:block;white-space:nowrap}
.hero .l3{color:var(--ink)}
.hero .lede{margin-top:clamp(24px,3vw,36px);max-width:60ch;text-align:center}
.hero .hero-actions{margin-top:clamp(28px,3.5vw,44px)}
.hero .btn{min-height:54px;padding:0 28px;font-size:17px}
.hero+.problem{margin-top:var(--section)}

/* the rolling term: a window one line tall; the track moves; a sizer reserves the widest term */
.roll{position:relative;display:inline-grid;grid-template-columns:max-content;height:1.24em;line-height:1.24;overflow:hidden;vertical-align:top;margin:-.14em 0}
.roll-sizer{visibility:hidden;grid-area:1/1;white-space:nowrap;pointer-events:none}
.roll-track{grid-area:1/1;display:flex;flex-direction:column;align-items:center;will-change:transform}
.term{display:block;height:1.24em;line-height:1.24;white-space:nowrap}
html:not(.js) .roll-track .term:not(:first-child),html.reduced .roll-track .term:not(:first-child){display:none}

/* ---------- product fragments (data-ui): the product's own conventions apply inside ---------- */
.ui{font:400 var(--s-ui)/1.4 var(--text);color:var(--ink);background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius)}
.ui-bar{display:flex;align-items:center;gap:16px;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--surface)}
.ui-crumb{font-weight:600;font-size:14px}
.ui-when{color:var(--ink-2)}
.ui-sum{margin-left:auto;color:var(--muted);white-space:nowrap}
.ui-h{font:600 14px/1.2 var(--text);color:var(--ink);margin:0 0 12px}
.ui-note{color:var(--muted);font-size:12px}
.ui-btn{display:inline-block;padding:7px 12px;border-radius:5px;background:var(--accent);color:var(--on-accent);font-weight:600;font-size:13px;line-height:1.2}
.ui-btn-quiet{background:var(--surface-2);color:var(--accent);border:1px solid var(--line)}
.ui-foot{display:flex;align-items:center;gap:14px;padding:12px 16px;border-top:1px solid var(--line)}
.chip{display:inline-block;padding:3px 8px;border-radius:4px;font-size:12px;font-weight:600;line-height:1.3;white-space:nowrap}
.chip-run{background:var(--blue-tint);color:var(--blue)}
.chip-ana{background:var(--warm-tint);color:var(--warm)}
.chip-plan{background:var(--surface-3);color:var(--ink-2)}
.chip-done{background:var(--ok-tint);color:var(--ok)}

/* week view */
.ui-split{display:grid;grid-template-columns:minmax(0,1fr) 300px}
.ui-table{width:100%;border-collapse:collapse}
.ui-table th{text-align:left;font-weight:500;color:var(--muted);font-size:12px;padding:10px 16px;border-bottom:1px solid var(--line)}
.ui-table td{padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink-2)}
.ui-table tr:last-child td{border-bottom:0}
.ui-table .ui-name{color:var(--ink);font-weight:600;white-space:nowrap}
.ui-table tr.is-selected td{background:var(--surface-3)}
.ui-table tr.is-selected td:first-child{box-shadow:inset 3px 0 0 var(--accent)}
.ui-src{white-space:nowrap}
.ui-src span{display:inline-block;padding:2px 7px;border:1px solid var(--line);border-radius:4px;margin-right:4px;color:var(--ink-2);font-size:12px}
.ui-side{border-left:1px solid var(--line);padding:16px;background:var(--surface)}
.ui-side li{display:grid;grid-template-columns:1fr auto;gap:2px 12px;padding:12px 0;border-top:1px solid var(--line)}
.ui-side li strong{font-weight:600;color:var(--ink);grid-column:1}
.ui-side li span{color:var(--muted);font-size:12px;grid-column:1}
.ui-side li em{font-style:normal;grid-column:2;grid-row:1 / span 2;align-self:center;padding:6px 10px;border-radius:5px;background:var(--accent-tint);color:var(--accent);font-weight:600;font-size:12px;white-space:nowrap}
@media (max-width:900px){
  .ui-split{grid-template-columns:1fr}
  .ui-side{border-left:0;border-top:1px solid var(--line)}
  .ui-table th:nth-child(4),.ui-table td:nth-child(4){display:none}
}
@media (max-width:560px){
  .ui-table th:nth-child(2),.ui-table td:nth-child(2){display:none}
  .ui-table td{padding:11px 12px}
  .ui-table .ui-name{white-space:normal}
  .ui-bar{flex-wrap:wrap;gap:6px 14px}
  .ui-sum{margin-left:0;width:100%}
  .ui-table tr:nth-child(n+5){display:none}
}

/* ---------- problem ---------- */
.problem{margin-top:var(--section);padding:0 var(--gutter);max-width:var(--max);margin-inline:auto}
.pains{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(24px,4vw,56px);margin-top:clamp(40px,5vw,72px)}
.pain h3{margin-top:22px}
.pain p{margin-top:10px;color:var(--ink-2)}
.vig{position:relative;height:200px;background:var(--surface);border-radius:var(--radius);overflow:hidden;font:500 13px/1.3 var(--text);color:var(--ink-2)}
.vig-tools span{position:absolute;padding:8px 12px;background:var(--surface-3);border-radius:5px;color:var(--ink)}
.vig-tools span:nth-child(1){left:8%;top:18%;transform:rotate(-6deg)}
.vig-tools span:nth-child(2){left:52%;top:12%;transform:rotate(4deg)}
.vig-tools span:nth-child(3){left:22%;top:52%;transform:rotate(3deg)}
.vig-tools span:nth-child(4){left:62%;top:58%;transform:rotate(-8deg)}
.vig-tools span:nth-child(5){left:6%;top:72%;transform:rotate(9deg)}
.vig-slide{padding:0}
.vig-slide .vig-title{position:absolute;left:24px;top:28px;font:500 22px/1 var(--display);color:var(--ink)}
.vig-slide .vig-line{position:absolute;left:24px;bottom:24px}
.vig-slide .vig-stamp{position:absolute;right:20px;top:24px;padding:6px 10px;border-radius:4px;background:var(--warm-tint);color:var(--warm);font-weight:600}
.vig-migrate{padding:24px}
.vig-migrate .vig-title{display:block;color:var(--ink);font-size:15px}
.vig-migrate .vig-bar{display:block;height:10px;margin:48px 0 14px;background:var(--surface-3);border-radius:5px;overflow:hidden}
.vig-migrate .vig-bar i{display:block;height:100%;width:12%;background:var(--accent);border-radius:5px}
@media (max-width:860px){.pains{grid-template-columns:1fr;gap:48px}.vig{height:170px}}

/* ---------- how it works: pinned fragment, changing state ---------- */
.how{margin-top:var(--section);padding:0 var(--gutter);max-width:var(--max);margin-inline:auto}
.how-head{display:grid;gap:20px;max-width:720px}
.how-body{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,6vw,96px);margin-top:clamp(40px,6vw,88px);align-items:start}
.steps{display:grid;gap:0}
.step{min-height:72vh;display:flex;flex-direction:column;justify-content:center;padding:24px 0}
.step h3{font-size:clamp(24px,2.4vw,30px);max-width:16ch;transition:color .3s ease}
.step p{margin-top:12px;color:var(--ink-2);max-width:40ch}
html.js .step:not(.is-active) h3{color:var(--muted)}
.how-stage{position:sticky;top:14vh;display:grid;background:var(--surface);border-radius:var(--radius);padding:clamp(16px,3vw,40px);min-height:min(560px,72vh);align-content:center}
.how-stage>.ui{grid-area:1/1;transition:opacity .35s ease,transform .35s ease}
html.js .how-stage>.ui{opacity:0;transform:translateY(12px);pointer-events:none}
html.js .how-stage[data-state="1"]>[data-panel="1"],html.js .how-stage[data-state="2"]>[data-panel="2"],html.js .how-stage[data-state="3"]>[data-panel="3"]{opacity:1;transform:none;pointer-events:auto}
html:not(.js) .how-stage{position:static;gap:24px}
html:not(.js) .how-stage>.ui{grid-area:auto}

.ui-sources li,.ui-filed li{display:grid;grid-template-columns:150px 1fr auto;gap:12px;align-items:center;padding:13px 16px;border-bottom:1px solid var(--line)}
.ui-sources li:last-child,.ui-filed li:last-child{border-bottom:0}
.ui-sources strong,.ui-filed strong{font-weight:600;color:var(--ink)}
.ui-sources span,.ui-filed span{color:var(--muted)}
.ui-sources em,.ui-filed em{font-style:normal;font-size:12px;font-weight:600;padding:3px 8px;border-radius:4px;white-space:nowrap}
.ui-sources em.ok{background:var(--ok-tint);color:var(--ok)}
.ui-sources em.busy{background:var(--warm-tint);color:var(--warm)}
.ui-filed em{background:transparent;border:1px solid var(--line);color:var(--ink-2);font-weight:500}
.ui-filed li.is-new{background:var(--surface-3)}
.ui-rows li{padding:12px 16px;border-bottom:1px solid var(--line)}
.ui-rows li:last-child{border-bottom:0}
.ui-row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.ui-row strong{font-weight:600;color:var(--ink)}
.ui-rows li.is-open{background:var(--surface-3)}
.ui-rows li.is-open p{margin:8px 0 10px;color:var(--ink-2)}
.ui-open{display:flex;align-items:center;gap:12px}
@media (max-width:860px){
  .how-body{grid-template-columns:1fr;gap:24px}
  .step{min-height:0;padding:28px 0 8px}
  .how-stage{position:static;min-height:0;align-content:start}
  html.js .how-stage>.ui{opacity:1;transform:none;pointer-events:auto;grid-area:auto}
  html.js .how-stage{gap:16px}
  .ui-sources li,.ui-filed li{grid-template-columns:1fr auto;grid-template-rows:auto auto}
  .ui-sources li span,.ui-filed li span{grid-column:1}
  .ui-sources li em,.ui-filed li em{grid-column:2;grid-row:1 / span 2;align-self:center}
}


/* ---------- isometric lab platform (how it works, step 2) ---------- */
.sort-anim{display:block;width:100%;height:auto;background:var(--surface-2);font:500 11px var(--text)}
.iso .f-top{fill:var(--surface-2);stroke:var(--ink-2);stroke-width:1;stroke-linejoin:round}
.iso .f-left{fill:var(--surface-3);stroke:var(--ink-2);stroke-width:1;stroke-linejoin:round}
.iso .f-right{fill:var(--surface);stroke:var(--ink-2);stroke-width:1;stroke-linejoin:round}
.iso .plat .f-top{fill:var(--surface)}
.iso .tile{stroke:var(--line);stroke-width:1;stroke-dasharray:3 4}
.iso .ring{fill:none;stroke:var(--ink-2);stroke-width:1;stroke-dasharray:2 3;opacity:.7}
.iso .hub .f-top,.iso .hub-top .f-top{fill:var(--accent-tint)}
.iso .hub-top .f-top{fill:var(--accent)}
.iso .hub-top .f-right{fill:var(--accent-tint);stroke:var(--accent-deep)}
.iso .hub-top .f-left{fill:var(--accent-tint);stroke:var(--accent-deep)}
.iso .well{fill:var(--accent-tint);stroke:var(--ink-2);stroke-width:.8}
.iso .check{fill:none;stroke:var(--ok);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.iso .cyl .f-top{fill:var(--blue-tint)}
.iso .lead{fill:none;stroke:var(--ink-2);stroke-width:1;stroke-dasharray:1;stroke-dashoffset:1;transition:stroke-dashoffset .6s ease}
.iso .dot{fill:var(--ink)}
.iso .cbox{fill:var(--surface-2);stroke:var(--ink-2);stroke-width:1}
.iso .ctext{fill:var(--ink);font-size:11px;font-weight:600;letter-spacing:.08em}
.iso .ctitle{fill:var(--ink);font-size:10.5px;font-weight:700;letter-spacing:.06em}
.iso .ckey{fill:var(--muted);font-size:10.5px}
.iso .cval{fill:var(--ink);font-size:10.5px;font-weight:600}
.iso .st-ok{fill:var(--ok)}.iso .st-warn{fill:var(--warm)}.iso .st-ink{fill:var(--muted)}
/* entrance: platform settles, stations rise in order, leaders draw, labels appear */
.iso .plat{opacity:0;transform:translateY(10px);transition:opacity .5s ease,transform .6s cubic-bezier(.2,.7,.2,1)}
.iso .station{opacity:0;transform:translateY(-14px);transition:opacity .45s ease,transform .55s cubic-bezier(.2,.7,.2,1);transition-delay:calc(.35s + var(--i) * .1s)}
.iso .call,.iso .card{opacity:0;transition:opacity .4s ease;transition-delay:calc(1.1s + var(--i,0) * .08s)}
.iso .call .lead,.iso .card .lead{transition-delay:calc(1.1s + var(--i,0) * .08s)}
.iso .card{--i:6}
.iso.is-live .plat{opacity:1;transform:none}
.iso.is-live .station{opacity:1;transform:none}
.iso.is-live .call,.iso.is-live .card{opacity:1}
.iso.is-live .lead{stroke-dashoffset:0}
html:not(.js) .iso :is(.plat,.station,.call,.card){opacity:1;transform:none}
html:not(.js) .iso .lead{stroke-dashoffset:0}
@media (prefers-reduced-motion:reduce){.iso *{transition:none !important}}

/* ---------- who: the field changes colour ---------- */
.who{margin-top:var(--section);background:var(--accent-tint);padding:clamp(64px,9vw,128px) var(--gutter)}
.who>*{max-width:var(--max);margin-inline:auto}
.who .h2{color:var(--ink)}
.roles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(28px,4vw,56px);margin-top:clamp(36px,5vw,64px)}
.role h3{color:var(--ink)}
.role p{margin-top:10px;color:var(--ink-2);max-width:32ch}
@media (max-width:760px){.roles{grid-template-columns:1fr;gap:32px}}

/* ---------- cta ---------- */
.cta{padding:var(--section) var(--gutter) 0;max-width:var(--max);margin-inline:auto}
.cta .display{max-width:11em}
.cta-actions{margin-top:36px}
.cta-note{margin-top:18px;color:var(--muted);font-size:var(--s-small)}

/* ---------- footer: one quiet line ---------- */
.foot{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;padding:clamp(120px,22vh,240px) var(--gutter) 30px;max-width:var(--max);margin-inline:auto;font-size:var(--s-small);color:var(--muted)}
.foot nav{display:flex;gap:24px}
.foot a{color:var(--ink);text-decoration:none}
.foot a:hover{color:var(--accent)}
.foot>span:last-child{text-align:right}
@media (max-width:640px){
  .foot{grid-template-columns:1fr;gap:8px;padding-top:20vh;padding-bottom:24px}
  .foot>span:last-child{text-align:left}
  .foot nav{flex-wrap:wrap;gap:8px 20px}
}

/* ---------- motion off ---------- */
@media (prefers-reduced-motion:reduce){
  .btn,.step h3,.how-stage>.ui{transition:none}
  html.js .how-stage>.ui{transform:none}
}