/* Headwater — shared styles for case-study pages */
:root{
  --bg:#f4efe4; --paper:#fbf8f1; --ink:#0f1d3a; --lime:#6aa9ff; --pop:#6aa9ff; --mut:#6a7388; --line:rgba(15,29,58,.2);
  --serif:'Instrument Serif',Georgia,serif; --sans:'Geist',system-ui,sans-serif; --mono:'Geist Mono',ui-monospace,monospace;
  --pad:clamp(20px,4vw,64px); --max:1400px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
::selection{background:var(--pop)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.mono{font-family:var(--mono);font-size:11.5px;letter-spacing:.09em;text-transform:uppercase}
i.it{font-family:var(--serif);font-style:italic;font-weight:400}
body::before{content:"";position:fixed;inset:0;z-index:90;pointer-events:none;opacity:.3;mix-blend-mode:multiply;
 background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3'/><feColorMatrix values='0 0 0 0 .4  0 0 0 0 .35  0 0 0 0 .25  0 0 0 .22 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>")}

/* nav */
nav{position:fixed;top:0;left:0;right:0;z-index:60;transition:background .3s}
nav.scrolled{background:rgba(244,239,228,.88);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;justify-content:space-between;align-items:center;height:70px}
.logo{font-family:var(--serif);font-size:30px;letter-spacing:-.02em;line-height:1;display:flex;align-items:center;gap:10px}
.logo i{font-style:italic}
.logo svg{width:32px;height:32px;flex:none;transition:transform .5s cubic-bezier(.3,1.6,.5,1)}
.logo:hover svg{transform:rotate(-8deg) scale(1.08)}
.mk .r{fill:var(--ink)}.mk .w1{stroke:var(--pop)}.mk .w2,.mk .w3{stroke:var(--bg)}
.nl{display:flex;gap:34px}
.nl a{position:relative}
.nl a::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:right;transition:transform .35s}
.nl a:hover::after{transform:scaleX(1);transform-origin:left}
.btn{display:inline-flex;align-items:center;gap:12px;padding:14px 26px;border-radius:999px;background:var(--ink);color:var(--bg);font-size:15px;transition:transform .3s cubic-bezier(.3,1.6,.5,1),background .3s,color .3s;position:relative;white-space:nowrap}
.btn:hover{background:var(--pop);color:var(--ink);transform:translateY(-3px) rotate(-1.5deg)}
.btn.out{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn.out:hover{background:var(--ink);color:var(--bg)}
.btn.pop{background:var(--pop);color:var(--ink)}
.btn.pop:hover{background:var(--bg)}

/* case hero */
.chero{padding:150px 0 70px;border-bottom:1px solid var(--ink);position:relative;overflow:hidden;background-color:color-mix(in srgb,var(--cc,var(--pop)) 22%,var(--bg))}
.back{display:inline-flex;gap:8px;color:var(--mut);margin-bottom:34px;transition:color .2s}
.back:hover{color:var(--ink)}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:26px}
.tag{border:1px solid var(--ink);border-radius:99px;padding:5px 14px;background:var(--paper)}
h1{font-family:var(--serif);font-weight:400;font-size:clamp(56px,10.5vw,176px);line-height:.9;letter-spacing:-.045em}
h1 i{font-style:italic}
.csum{font-size:clamp(19px,1.9vw,26px);max-width:760px;margin-top:30px;line-height:1.38}
.meta{display:grid;grid-template-columns:repeat(3,1fr);margin-top:56px;border-top:1px solid var(--ink)}
.meta div{padding:18px 20px 0 0;border-right:1px solid var(--line)}
.meta div+div{padding-left:20px}
.meta div:last-child{border-right:0}
.meta .mono{color:var(--mut);display:block;margin-bottom:6px}
.meta b{font-weight:500;font-size:16px}

/* sections */
section{padding:clamp(80px,10vw,150px) 0;position:relative}
.rule{border-top:1px solid var(--line)}
.sh{display:grid;grid-template-columns:180px 1fr;gap:30px;margin-bottom:clamp(36px,5vw,70px)}
.sh .mono{color:var(--mut);padding-top:1.2vw}
h2{font-family:var(--serif);font-weight:400;font-size:clamp(40px,6.4vw,104px);line-height:.93;letter-spacing:-.04em;max-width:16ch}
h2 i{font-style:italic}
.lede{margin-top:24px;max-width:600px;color:var(--mut);font-size:clamp(17px,1.4vw,20px)}
.rv{opacity:0;transform:translateY(30px);transition:opacity 1s cubic-bezier(.16,1,.3,1),transform 1s cubic-bezier(.16,1,.3,1);transition-delay:var(--d,0s)}
.rv.in{opacity:1;transform:none}
.two{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,80px)}
.two p{color:var(--mut);margin-bottom:16px;max-width:52ch}
.two p b{color:var(--ink);font-weight:500}
.big{font-family:var(--serif);font-size:clamp(28px,3.2vw,46px);line-height:1.08;letter-spacing:-.03em;max-width:24ch}
.two .big{color:var(--ink);margin-bottom:0}
.big i{font-style:italic;background:linear-gradient(transparent 62%,var(--cc,var(--pop)) 62%)}

/* demo shell */
.demo{border:1px solid var(--ink);border-radius:24px;overflow:hidden;background:var(--paper);box-shadow:10px 12px 0 var(--ink)}
.demo-top{display:flex;align-items:center;gap:8px;padding:12px 18px;border-bottom:1px solid var(--line);background:var(--bg)}
.demo-top i{width:12px;height:12px;border-radius:50%;background:var(--line)}
.demo-top .url{margin-left:12px;flex:1;font:500 12px var(--mono);color:var(--mut);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.demo-top .live{display:flex;align-items:center;gap:7px;color:var(--ink)}
.demo-top .live::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--pop);border:1.5px solid var(--ink);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 9px rgba(15,29,58,0)}0%{box-shadow:0 0 0 0 rgba(15,29,58,.35)}}
.dtabs{display:flex;gap:6px;padding:12px 14px;border-bottom:1px solid var(--line);overflow-x:auto;background:var(--paper)}
.dtabs button{padding:9px 18px;border-radius:99px;border:1px solid var(--line);font-size:14px;white-space:nowrap;transition:all .25s}
.dtabs button:hover{border-color:var(--ink)}
.dtabs button.on{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.dnote{margin-top:16px;color:var(--mut)}
.panel{display:none}.panel.on{display:block;animation:fadein .5s}
@keyframes fadein{from{opacity:0;transform:translateY(8px)}}

/* feature grid */
.fgrid{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--ink);border-radius:24px;overflow:hidden;background:var(--paper)}
.fc{padding:28px 26px 30px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);transition:background .4s}
.fc:nth-child(3n){border-right:0}
.fc:nth-last-child(-n+3){border-bottom:0}
.fc:hover{background:color-mix(in srgb,var(--cc,var(--pop)) 30%,var(--paper))}
.fc .mono{color:var(--mut)}
.fc h3{font-family:var(--serif);font-weight:400;font-size:30px;letter-spacing:-.025em;line-height:1;margin:12px 0 10px}
.fc p{color:var(--mut);font-size:15.5px}

/* decisions */
.dec{border-top:1px solid var(--ink)}
.dr{display:grid;grid-template-columns:70px 1fr 1.2fr;gap:30px;padding:30px 0;border-bottom:1px solid var(--line);align-items:baseline}
.dr .mono{color:var(--mut)}
.dr h3{font-family:var(--serif);font-weight:400;font-size:clamp(28px,3vw,42px);letter-spacing:-.03em;line-height:1}
.dr p{color:var(--mut);max-width:52ch}
.stack{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.stack span{border:1px solid var(--ink);border-radius:99px;padding:5px 14px;font:500 12px var(--mono);text-transform:uppercase;letter-spacing:.06em;background:var(--paper)}

/* next + cta */
.next{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.nx{border:1px solid var(--ink);border-radius:24px;padding:30px;display:flex;flex-direction:column;justify-content:space-between;min-height:260px;transition:transform .4s cubic-bezier(.3,1.5,.5,1),box-shadow .3s;background:var(--c,var(--paper))}
.nx:hover{transform:translateY(-8px);box-shadow:8px 10px 0 var(--ink)}
.nx h3{font-family:var(--serif);font-weight:400;font-size:clamp(40px,5vw,72px);letter-spacing:-.04em;line-height:.95}
.nx p{max-width:34ch}
.cta{background:var(--ink);color:var(--bg);text-align:center}
.cta h2{margin:0 auto;max-width:14ch}
.cta h2 i{color:var(--pop)}
.cta p{color:rgba(244,239,228,.65);margin:22px auto 34px;max-width:520px}

footer{background:var(--ink);color:var(--bg);padding:0 0 30px;border-top:1px solid rgba(244,239,228,.2)}
.ft{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;padding:36px 0;color:rgba(244,239,228,.6)}
.ft a:hover{color:var(--pop)}
.bigf{font-family:var(--serif);font-size:clamp(70px,24vw,420px);line-height:.78;letter-spacing:-.06em;text-align:center;color:var(--pop);margin-bottom:-.06em;user-select:none;overflow:hidden;white-space:nowrap;padding-top:.06em}
.bigf i{font-style:italic}

/* toast */
.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,30px);background:var(--ink);color:var(--bg);padding:13px 22px;border-radius:99px;font-size:15px;z-index:200;opacity:0;transition:all .45s cubic-bezier(.3,1.5,.5,1);max-width:calc(100vw - 40px);text-align:center;box-shadow:0 14px 40px -10px rgba(0,0,0,.5)}
.toast.on{opacity:1;transform:translate(-50%,0)}
.toast b{color:var(--pop);font-weight:500}

@media(max-width:980px){
  .nl{display:none}.sh{grid-template-columns:1fr;gap:12px}.sh .mono{padding-top:0}
  .meta{grid-template-columns:1fr 1fr}.meta div:nth-child(2){border-right:0}.meta div:nth-child(3){padding-left:0}.meta div:nth-child(n+3){margin-top:18px}
  .two{grid-template-columns:1fr}
  .fgrid{grid-template-columns:1fr 1fr}.fc:nth-child(3n){border-right:1px solid var(--line)}.fc:nth-child(2n){border-right:0}.fc:nth-last-child(-n+3){border-bottom:1px solid var(--line)}.fc:nth-last-child(-n+2){border-bottom:0}
  .dr{grid-template-columns:1fr;gap:10px}.next{grid-template-columns:1fr}
}
@media(max-width:560px){.fgrid{grid-template-columns:1fr}.fc{border-right:0!important;border-bottom:1px solid var(--line)!important}.fc:last-child{border-bottom:0!important}nav .btn{padding:11px 18px;font-size:14px}.logo span{white-space:nowrap}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}.rv{opacity:1;transform:none}}

/* outcome cards */
.hows{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.hw{border:1px solid var(--ink);border-radius:20px;padding:24px;background:var(--paper);transition:transform .4s cubic-bezier(.3,1.5,.5,1)}
.hw:hover{transform:translateY(-6px)}
.hw .mono{color:var(--mut)}
.hw h3{font-family:var(--serif);font-weight:400;font-size:30px;letter-spacing:-.025em;line-height:1;margin:10px 0}
.hw p{color:var(--mut);font-size:15.5px}