/* quicksilver.group homepage (A2, approved Nov 2026) */
:root{
  --ink:#262929; --muted:#545B5B; --blue:#336699; --blue-dark:#1F3D5C;
  --paper:#FFFFFF; --grey:#F1F0EC; --line:#DEDDD6; --line-2:#C9CCC6;
  --serif:'Source Serif 4', Georgia, serif; --sans:Inter, Arial, sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
img,video{max-width:100%}
a{color:var(--blue)} a:hover{color:var(--blue-dark)}
h1,h2,h3{font-family:var(--serif);font-weight:500;margin:0}
p{margin:0}
.wrap{max-width:1240px;margin:0 auto;padding-left:32px;padding-right:32px}
.eyebrow{font-size:13px;letter-spacing:1.6px;text-transform:uppercase;font-weight:600;color:var(--blue)}
.muted{color:var(--muted)}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:16px;background:#fff;padding:8px 12px;z-index:10}

/* buttons */
.btn{display:inline-block;text-decoration:none;font-weight:600;border-radius:3px;padding:17px 32px;font-size:17px;line-height:1.3}
.btn-dark{background:var(--ink);color:#fff}.btn-dark:hover{background:#000;color:#fff}
.btn-line{border:1px solid var(--line);color:var(--ink);background:var(--paper);padding:16px 32px}.btn-line:hover{border-color:var(--ink);color:var(--ink)}
.btn-row{display:flex;flex-wrap:wrap;gap:16px}

/* header */
.site-header{border-bottom:1px solid var(--line);background:var(--paper)}
.nav{display:flex;flex-wrap:wrap;align-items:center;gap:14px 30px;padding-top:22px;padding-bottom:22px}
.nav .brand{margin-right:auto;display:flex}
.nav .brand img{height:30px;width:auto}
.nav a.nl{color:var(--muted);text-decoration:none;font-size:15px;font-weight:500}
.nav a.nl:hover{color:var(--ink)}
.nav a.dev{color:var(--blue);font-weight:600}
.nav a.cta{background:var(--ink);color:#fff;text-decoration:none;font-size:15px;font-weight:500;padding:13px 26px;border-radius:3px}
.nav-toggle{display:none}

/* hero */
.hero{display:flex;flex-wrap:wrap;gap:40px 56px;align-items:center;padding-top:104px;padding-bottom:72px}
.hero-copy{flex:1 1 560px;min-width:0;display:flex;flex-direction:column;gap:26px}
.hero h1{font-size:clamp(40px,5.6vw,72px);line-height:1.06;letter-spacing:-.6px;text-wrap:balance}
.hero h1 sup{font-family:var(--sans);font-size:.22em;font-weight:500;vertical-align:super;letter-spacing:0;margin-left:4px;color:var(--muted)}
.hero .lead{font-size:20px;line-height:1.6;color:var(--muted);max-width:640px}
.hero-graphic{flex:0 1 460px;max-width:460px;width:100%;height:auto}

/* logos */
.logos{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--grey)}
.logos .label{padding-top:30px;padding-bottom:12px;font-size:13px;letter-spacing:1.6px;text-transform:uppercase;font-weight:600;color:var(--muted)}
.marquee{overflow:hidden;padding:18px 0 32px}
.track{display:flex;width:max-content;align-items:center;gap:72px;padding-left:72px;opacity:.72}
.track img{width:auto}

/* numbers */
.numbers{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:32px;padding-top:72px;padding-bottom:72px}
.stat{border-top:2px solid var(--ink);padding-top:20px;display:flex;flex-direction:column;gap:6px}
.stat .n{font-family:var(--serif);font-size:56px;font-weight:500;line-height:1;color:var(--blue)}
.stat .l{font-size:16px;color:var(--muted)}

/* generic sections */
.band-grey{background:var(--grey)}
.section{padding-top:88px;padding-bottom:88px;display:flex;flex-direction:column;gap:40px}
.head{display:flex;flex-direction:column;gap:14px;max-width:760px}
.h2{font-size:clamp(30px,3.4vw,42px);line-height:1.15;text-wrap:balance}
.pillars{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:32px}
.pillar{display:flex;flex-direction:column;gap:10px}
.pillar h3{font-size:22px}
.pillar p{color:var(--muted)}

/* testimonials */
.quotes{padding-top:96px;padding-bottom:96px;display:flex;flex-direction:column;gap:32px}
.quotes-top{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between}
.quotes-top .head img{align-self:flex-start;height:44px;width:auto}
.arrows{display:flex;gap:10px}
.arrows button{width:48px;height:48px;border-radius:50%;border:1px solid var(--line);background:var(--paper);color:var(--ink);font-size:20px;cursor:pointer}
.arrows button.next{border-color:var(--ink);background:var(--ink);color:#fff}
.scroller{display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:16px;scrollbar-width:thin}
.scroller figure{margin:0;scroll-snap-align:start}
.q-video{flex:0 0 min(640px,90%);display:flex;flex-direction:column;gap:14px}
.q-video video{width:100%;aspect-ratio:16/9;border-radius:6px;background:var(--ink);display:block}
.q-video figcaption{font-size:15px;line-height:1.5;color:var(--muted)}
.q-card{flex:0 0 min(520px,86%);border:1px solid var(--line);border-radius:6px;padding:36px;display:flex;flex-direction:column;justify-content:space-between;gap:24px;background:var(--paper)}
.q-card blockquote{margin:0;font-family:var(--serif);font-size:22px;line-height:1.45}
.q-card figcaption{font-size:15px;color:var(--muted)}
.scroller strong{color:var(--ink)}

/* problem */
.problem{background:var(--ink);color:var(--paper)}
.problem .inner{padding-top:104px;padding-bottom:104px;display:flex;flex-wrap:wrap;gap:56px 72px;align-items:center}
.problem .copy{flex:1 1 460px;min-width:0;display:flex;flex-direction:column;gap:24px}
.problem .eyebrow{color:#A9C2DB}
.problem h2{font-size:clamp(32px,3.8vw,48px);line-height:1.12;color:#fff}
.problem .copy p.body{font-size:19px;line-height:1.6;color:#D6D8D8}
.pstats{flex:1 1 460px;min-width:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px 32px}
.pstat{border-top:2px solid var(--paper);padding-top:18px;display:flex;flex-direction:column;gap:8px}
.pstat .n{font-family:var(--serif);font-size:56px;line-height:1;font-weight:500;color:#A9C2DB}
.pstat .l{font-size:15px;line-height:1.5;color:var(--paper)}
.pstat .s{font-size:12px;color:#9EA3A3}

/* chris quote */
.cquote{background:var(--grey);border-bottom:1px solid var(--line)}
.cquote figure{margin:0;padding-top:60px;padding-bottom:60px;display:flex;flex-direction:column;gap:16px}
.cquote blockquote{margin:0;font-family:var(--serif);font-size:clamp(20px,2vw,26px);line-height:1.3;font-weight:600;color:var(--ink);max-width:1176px}
.cquote figcaption{display:flex;align-items:center;gap:14px}
.cquote figcaption img{width:46px;height:46px;border-radius:50%;object-fit:cover;border:2px solid var(--blue)}
.cquote .who{display:flex;flex-direction:column}
.cquote .who b{font-weight:600;font-size:16px}
.cquote .who span{font-size:14px;color:var(--muted)}
.ulink{color:var(--blue);font-weight:600;text-decoration:underline;text-underline-offset:4px}

/* diagnostics */
.diag-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:20px}
.diag{background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:32px;text-decoration:none;color:var(--ink);display:flex;flex-direction:column;gap:12px;transition:border-color .2s}
.diag:hover{border-color:var(--ink);color:var(--ink)}
.diag .t{font-family:var(--serif);font-size:23px;font-weight:500}
.diag .d{color:var(--muted);font-size:16px}
.diag .r{color:var(--blue);font-weight:600;font-size:15px}

/* dev band */
.devband{background:var(--blue);color:#fff}
.devband .inner{padding-top:80px;padding-bottom:80px;display:flex;flex-wrap:wrap;gap:28px 56px;align-items:center}
.devband .copy{flex:1 1 540px;min-width:0;display:flex;flex-direction:column;gap:12px}
.devband .eyebrow{color:#D4E2F0}
.devband h2{font-size:clamp(28px,3vw,36px);line-height:1.2;color:#fff}
.devband p{color:#E8EFF6}
.devband a.btn{background:#fff;color:var(--blue-dark);padding:16px 26px;font-size:16px}

/* method */
.method{padding-top:96px;padding-bottom:96px;display:flex;flex-wrap:wrap;gap:48px 72px}
.method .copy{flex:1 1 480px;min-width:0;display:flex;flex-direction:column;gap:18px}
.method .copy p{color:var(--muted)}
.method .copy .btn{align-self:flex-start;font-size:16px;padding:15px 26px}
.method .list{flex:1 1 420px;min-width:0;display:flex;flex-direction:column}
.method .item{border-top:1px solid var(--line);padding:22px 0;display:flex;flex-direction:column;gap:4px}
.method .item:last-child{border-bottom:1px solid var(--line)}
.method .item h3{font-size:20px}
.method .item p{color:var(--muted);font-size:16px}

/* closing CTA */
.closing{background:#fff;border-top:1px solid var(--line)}
.closing .inner{padding-top:88px;padding-bottom:88px;display:flex;flex-direction:column;gap:22px;align-items:flex-start}
.closing h2{font-size:clamp(30px,3.6vw,46px);line-height:1.15;max-width:820px}
.closing p{color:var(--muted);max-width:640px}

/* footer */
.site-footer{background:var(--ink);color:#C9CCC6;border-top:1px solid #3A3E3E}
.fgrid{padding-top:56px;padding-bottom:40px;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:32px;font-size:15px}
.fcol{display:flex;flex-direction:column;gap:8px}
.fcol h4{margin:0;font-size:12px;letter-spacing:1.6px;font-weight:600;color:var(--paper);text-transform:uppercase}
.fcol a{color:#C9CCC6;text-decoration:none}.fcol a:hover{color:#fff;text-decoration:underline}
.fbottom{padding-bottom:40px;font-size:13px;color:#9EA3A3}

/* motion */
@keyframes qsMarquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@keyframes qsRise{from{opacity:.15;transform:translateY(32px)}to{opacity:1;transform:none}}
@keyframes qsPulse{0%,100%{opacity:.35}50%{opacity:1}}
@keyframes qsDraw{from{stroke-dashoffset:600}to{stroke-dashoffset:0}}
.track{animation:qsMarquee 38s linear infinite}
.marquee:hover .track{animation-play-state:paused}
.qs-node{animation:qsPulse 4s ease-in-out infinite}
.qs-edge{stroke-dasharray:600;animation:qsDraw 2.4s ease-out both}
@supports (animation-timeline: view()){.rv{animation:qsRise linear both;animation-timeline:view();animation-range:entry 0% cover 28%}}
@property --qn{syntax:'<integer>';inherits:false;initial-value:0}
.qs-count{counter-reset:qn var(--qn);animation-duration:2.2s;animation-timing-function:cubic-bezier(.2,.7,.2,1);animation-fill-mode:both}
.qs-count::after{content:counter(qn)}
.qs-count.n48{--qn:48;animation-name:qsTo48}.qs-count.n31{--qn:31;animation-name:qsTo31}.qs-count.n56{--qn:56;animation-name:qsTo56}.qs-count.n42{--qn:42;animation-name:qsTo42}
@keyframes qsTo48{from{--qn:0}to{--qn:48}}@keyframes qsTo31{from{--qn:0}to{--qn:31}}@keyframes qsTo56{from{--qn:0}to{--qn:56}}@keyframes qsTo42{from{--qn:0}to{--qn:42}}
@supports (animation-timeline: view()){.qs-count{animation-timeline:view();animation-range:entry 10% cover 45%}}
@media (prefers-reduced-motion: reduce){.track,.qs-node,.qs-edge,.rv,.qs-count{animation:none}html{scroll-behavior:auto}}

/* phone */
@media (max-width:820px){
  .wrap{padding-left:20px;padding-right:20px}
  .nav{gap:12px 20px}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--line);border-radius:3px;background:var(--paper);color:var(--ink);cursor:pointer}
  .nav .links{display:none;flex-basis:100%;flex-direction:column;gap:4px}
  .nav.open .links{display:flex}
  .nav .links a{padding:10px 0}
  .nav .links a.cta{padding:13px 20px;align-self:flex-start;margin-top:8px}
  .hero{padding-top:56px;padding-bottom:48px}
  .hero-graphic{max-width:420px;margin:0 auto}
  .section,.quotes,.method{padding-top:64px;padding-bottom:64px}
  .problem .inner{padding-top:72px;padding-bottom:72px}
  .pstats{gap:28px 20px}
  .pstat .n,.stat .n{font-size:44px}
  .diag-grid{grid-template-columns:1fr}
  .track{gap:48px;padding-left:48px}
}
@media (min-width:821px){.nav .links{display:contents}}

/* ---- hero motion (Chris's graph, animated) ---- */
@keyframes qsUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@keyframes qsLine{from{stroke-dashoffset:1}to{stroke-dashoffset:0}}
@keyframes qsPop{0%{opacity:0;transform:scale(.2)}70%{opacity:1;transform:scale(1.25)}100%{opacity:1;transform:scale(1)}}
@keyframes qsFade{from{opacity:0}to{opacity:1}}
@keyframes qsFlow{to{stroke-dashoffset:-50}}
@keyframes qsBreathe{0%,100%{transform:scale(1)}50%{transform:scale(1.18)}}
@keyframes qsRing{0%{transform:scale(1);opacity:.55}100%{transform:scale(5.5);opacity:0}}
@keyframes qsDrift{0%,100%{transform:translate(0,0)}50%{transform:translate(0,-8px)}}
.hero-copy>*{animation:qsUp .9s cubic-bezier(.2,.7,.2,1) both}
.hero-copy>*:nth-child(1){animation-delay:.05s}.hero-copy>*:nth-child(2){animation-delay:.15s}.hero-copy>*:nth-child(3){animation-delay:.3s}.hero-copy>*:nth-child(4){animation-delay:.45s}
.qs-graph{overflow:visible;animation:qsDrift 9s ease-in-out 3s infinite}
.qs-graph line[pathLength]{stroke-dasharray:1;stroke-dashoffset:1;animation:qsLine 1.1s cubic-bezier(.4,0,.2,1) var(--d,0s) forwards}
.qs-graph .g-dash line{opacity:0;animation:qsFade .8s ease var(--d,0s) forwards,qsFlow 3s linear var(--d,0s) infinite}
.qs-graph circle{transform-box:fill-box;transform-origin:center}
.qs-graph .g-nodes circle{opacity:0;animation:qsPop .6s ease-out var(--d,0s) forwards}
.qs-graph .g-tnodes circle{opacity:0;animation:qsPop .7s cubic-bezier(.2,.7,.2,1) var(--d,0s) forwards,qsBreathe 4s ease-in-out calc(var(--d,0s) + 1s + var(--p,0s)) infinite}
.qs-graph .hub{opacity:0;animation:qsPop .7s ease-out 1.3s forwards}
.qs-graph .hub-ring{opacity:0;animation:qsRing 3.2s ease-out 2.2s infinite}
.qs-graph .hub-ring.r2{animation-delay:3.8s}

/* numbers row counters */
.qs-count.n500{--qn:500;animation-name:qsTo500}.qs-count.n34{--qn:34;animation-name:qsTo34}.qs-count.n300{--qn:300;animation-name:qsTo300}.qs-count.n24{--qn:24;animation-name:qsTo24}
@keyframes qsTo500{from{--qn:0}to{--qn:500}}@keyframes qsTo34{from{--qn:0}to{--qn:34}}@keyframes qsTo300{from{--qn:0}to{--qn:300}}@keyframes qsTo24{from{--qn:0}to{--qn:24}}
.stat{position:relative}
.stat::before{content:"";position:absolute;left:0;top:-2px;height:2px;width:100%;background:var(--blue);transform:scaleX(0);transform-origin:left;transition:transform .8s cubic-bezier(.2,.7,.2,1)}
.stat:hover::before{transform:scaleX(1)}
@supports (animation-timeline: view()){.stat::before{animation:qsGrowBar linear both;animation-timeline:view();animation-range:entry 20% cover 45%}}
@keyframes qsGrowBar{from{transform:scaleX(0)}to{transform:scaleX(1)}}

/* card and button micro-interactions */
.diag{position:relative;overflow:hidden;transition:border-color .25s,transform .25s,box-shadow .25s}
.diag::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;background:var(--blue);transform:scaleX(0);transform-origin:left;transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.diag:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(38,41,41,.08)}
.diag:hover::after{transform:scaleX(1)}
.diag .r{transition:letter-spacing .25s}.diag:hover .r{letter-spacing:.4px}
.btn{transition:background .2s,color .2s,border-color .2s,transform .2s}
.btn:hover{transform:translateY(-1px)}

@media (prefers-reduced-motion: reduce){
  .hero-copy>*,.qs-graph,.qs-graph *{animation:none!important}
  .qs-graph line{stroke-dashoffset:0!important}
  .qs-graph .g-nodes circle,.qs-graph .g-tnodes circle,.qs-graph .hub,.qs-graph .g-dash line{opacity:1}
  .qs-graph .g-packets,.qs-graph .hub-ring{display:none}
  .stat::before{animation:none}
  .diag,.diag:hover,.btn:hover{transform:none}
}

/* footer brand + boilerplate */
.fgrid{grid-template-columns:1.4fr 1fr 1fr 1fr}
.fbrand .flogo{height:26px;width:auto;filter:brightness(0) invert(1);opacity:.92}
.fboiler{margin-top:14px;max-width:36ch;font-size:15px;line-height:1.55;color:#C9CCC6}
.faddr{font-style:normal;line-height:1.5}
@media (max-width:900px){.fgrid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.fgrid{grid-template-columns:1fr}}
.fbottom{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:12px 32px}.fbottom p{margin:0;max-width:760px}
.flegal{display:flex;gap:24px;font-size:15px;font-weight:500}.flegal a{color:#FFFFFF;text-decoration:none}.flegal a:hover{text-decoration:underline;text-underline-offset:3px}