/* Northline Plumbing & Drain — concept identity. Independent of AutoFlow and Evergreen. */
:root{
  --ink:#0F1417;--ink-2:#1A2126;--steel:#E7EAE8;--paper:#F6F7F5;--line:#C9CFCB;--line-d:#2C363C;
  --amber:#F5B700;--amber-d:#FFC933;--tx:#414B51;--mute:#5B656B;--tx-d:#C4CCD0;--mute-d:#8D989E;
  --sans:"Archivo","Helvetica Neue",Arial,system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --gut:clamp(1.25rem,4vw,2.75rem);--max:78rem;--y:clamp(4rem,2.5rem + 6vw,8rem);--ease:cubic-bezier(.3,.7,.2,1)}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:5.5rem;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 1.0625rem/1.6 var(--sans);-webkit-font-smoothing:antialiased}
h1,h2,h3{font-weight:800;letter-spacing:-.03em;line-height:1;margin:0 0 1rem;text-wrap:balance}
h1{font-size:clamp(2.7rem,1.3rem + 6.2vw,6rem);line-height:.96;letter-spacing:-.04em}
h2{font-size:clamp(2.1rem,1.3rem + 3.6vw,4rem);letter-spacing:-.035em}
h3{font-size:clamp(1.3rem,1.1rem + .9vw,1.7rem);letter-spacing:-.02em;line-height:1.1}
p{margin:0 0 1rem;color:var(--tx);text-wrap:pretty}
a{color:inherit}
:focus-visible{outline:3px solid var(--amber);outline-offset:3px}
.lt :focus-visible,.form-lt :focus-visible{outline-color:var(--ink)}
.skip{position:absolute;left:-999px;background:var(--amber);color:var(--ink);padding:.75rem 1rem;z-index:100;font-weight:700}
.skip:focus{left:1rem;top:1rem}
.wrap{width:100%;max-width:calc(var(--max) + var(--gut)*2);margin-inline:auto;padding-inline:var(--gut)}
.mono{font:500 .75rem/1.4 var(--mono);letter-spacing:.1em;text-transform:uppercase}
.kick{display:inline-flex;align-items:center;gap:.6rem;color:var(--mute);margin-bottom:1.5rem}
.kick::before{content:"";width:.55rem;height:.55rem;background:var(--amber)}
.dk .kick{color:var(--mute-d)}
section{padding-block:var(--y)}
.dk{background:var(--ink);color:#fff}.dk p{color:var(--tx-d)}

/* Notice + header */
.notice{background:var(--ink-2);color:var(--tx-d);padding:.55rem var(--gut);text-align:center;border-bottom:1px solid var(--line-d)}
.notice b{color:#fff;font-weight:500}.notice span{color:var(--mute-d)}
.notice::before{content:"";display:inline-block;width:.5rem;height:.5rem;background:var(--amber);margin-right:.7rem;vertical-align:.05em}
@media(max-width:639px){.notice span{display:none}}
.hdr{position:sticky;top:0;z-index:50;background:var(--ink);color:#fff;border-bottom:1px solid var(--line-d)}
.hdr__in{display:flex;align-items:center;justify-content:space-between;min-height:4.5rem}
.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none;font-weight:800;letter-spacing:-.02em;font-size:1.15rem}
.brand svg{flex:none}
.brand small{display:none;font:500 .625rem var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--mute-d);margin-top:.15rem}
@media(min-width:420px){.brand small{display:block}}
.nav{display:none;list-style:none;margin:0;padding:0;align-items:center;gap:2rem}
.nav a{text-decoration:none;font-size:.9375rem;font-weight:500;color:var(--tx-d);padding:.5rem 0;border-bottom:2px solid transparent;transition:color .2s,border-color .2s}
.nav a:hover{color:#fff;border-color:var(--amber)}
.nav a.btn{border:0;color:var(--ink);padding:0 1.25rem}
.burger{min-height:2.75rem;padding:0 1rem;background:none;border:1px solid var(--mute-d);color:#fff;font:500 .75rem var(--mono);letter-spacing:.1em;text-transform:uppercase;cursor:pointer}
@media(min-width:980px){.nav{display:flex}.burger{display:none}}
.drop{display:none;background:var(--ink);border-bottom:1px solid var(--line-d)}
.drop.open{display:block}
.drop a:not(.btn){display:flex;justify-content:space-between;padding:1.05rem 0;font-size:1.35rem;font-weight:700;letter-spacing:-.02em;text-decoration:none;border-top:1px solid var(--line-d)}
.drop a:not(.btn)::after{content:"→";color:var(--amber)}
.drop .btn{width:100%;margin:1.25rem 0 1.5rem}
@media(min-width:980px){.drop{display:none!important}}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.75rem;min-height:3.5rem;padding:0 1.9rem;border:2px solid var(--amber);background:var(--amber);color:var(--ink);font:700 1rem/1 var(--sans);letter-spacing:-.01em;text-decoration:none;cursor:pointer;border-radius:0;transition:background .2s,transform .2s var(--ease),color .2s,border-color .2s}
.btn:hover{background:var(--amber-d);border-color:var(--amber-d)}
.btn .ar{transition:transform .25s var(--ease)}.btn:hover .ar{transform:translateX(4px)}
.btn--ghost{background:transparent;color:#fff;border-color:#59666D}
.btn--ghost:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn--blk{background:var(--ink);border-color:var(--ink);color:#fff}
.btn--blk:hover{background:#000;border-color:#000}
.btn--sm{min-height:2.75rem;font-size:.9375rem}
.acts{display:flex;flex-wrap:wrap;gap:.75rem}
@media(max-width:639px){.acts .btn{flex:1 1 100%}}

/* Hero */
.hero{padding-block:clamp(2.5rem,1rem + 5vw,5.5rem) 0;overflow:hidden}
.hero__g{display:grid;gap:3.5rem;padding-bottom:var(--y)}
@media(min-width:960px){.hero__g{grid-template-columns:1.25fr .75fr;gap:4rem;align-items:center}}
.hero h1 em{font-style:normal;color:var(--amber)}
.hero .lead{font-size:1.25rem;max-width:34rem;margin:1.75rem 0 2.25rem}
.stage{position:relative;min-height:26rem}
.stage>svg{position:absolute;inset:0;width:100%;height:100%}
.pipe{stroke-dasharray:1400;stroke-dashoffset:1400;animation:draw 2s .2s var(--ease) forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.ticket{position:relative;margin:2.5rem 0 0 auto;width:min(100%,21rem);background:var(--paper);color:var(--ink);border:2px solid var(--ink);box-shadow:8px 8px 0 var(--amber)}
.ticket__h{display:flex;justify-content:space-between;padding:.8rem 1rem;background:var(--ink);color:#fff;border-bottom:2px solid var(--ink)}
.ticket__h span:last-child{color:var(--amber)}
.ticket dl{margin:0;padding:.5rem 1rem 1rem}
.ticket dt{color:var(--mute);margin-top:.9rem}
.ticket dd{margin:.2rem 0 0;font-weight:700;font-size:1.05rem;letter-spacing:-.01em;padding-bottom:.7rem;border-bottom:1px solid var(--line)}
.ticket__b{display:block;margin:0 1rem 1rem;padding:.9rem 1rem;background:var(--amber);font-weight:700;text-align:center}
@media(max-width:959px){.stage{min-height:0}.ticket{margin:0}.stage>svg{display:none}}
.facts{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line-d)}
.facts div{padding:1.1rem var(--gut) 1.1rem 0;border-bottom:1px solid var(--line-d);color:var(--tx-d)}
.facts div b{color:var(--amber);font-weight:500;margin-right:.6rem}
@media(min-width:800px){.facts{grid-template-columns:repeat(4,1fr)}.facts div{border-bottom:0;border-right:1px solid var(--line-d);padding-left:1.25rem}.facts div:first-child{padding-left:0}.facts div:last-child{border-right:0}}

/* Services: spec grid */
.svc{background:var(--steel)}
.head{display:grid;gap:1rem;margin-bottom:3.5rem}
@media(min-width:900px){.head{grid-template-columns:1.1fr .9fr;align-items:end;gap:4rem}}
.head h2{margin:0}.head p{margin:0;font-size:1.125rem;max-width:26rem}
.specs{display:grid;border:2px solid var(--ink);background:var(--paper)}
@media(min-width:800px){.specs{grid-template-columns:1fr 1fr}}
.spec{position:relative;padding:2rem 1.5rem 2.25rem;border-bottom:1px solid var(--ink)}
.spec:last-child{border-bottom:0}
@media(min-width:800px){.spec{padding:2.5rem 2.25rem 2.75rem}.spec:nth-child(odd){border-right:1px solid var(--ink)}.spec:nth-child(-n+2){border-bottom:1px solid var(--ink)}.spec:nth-child(n+3){border-bottom:0}}
.spec::before{content:"";position:absolute;left:0;top:0;height:5px;width:0;background:var(--amber);transition:width .4s var(--ease)}
.spec:hover::before{width:100%}
.spec .mono{color:var(--mute);display:block;margin-bottom:2.25rem}
.spec p{max-width:28rem}
.chips{display:flex;flex-wrap:wrap;gap:.4rem;margin:1.25rem 0 0;padding:0;list-style:none}
.chips li{padding:.3rem .6rem;border:1px solid var(--ink);font:500 .6875rem var(--mono);letter-spacing:.08em;text-transform:uppercase}

/* Approach */
.appr{background:var(--paper)}
.appr__cols{display:grid;gap:0;border-top:2px solid var(--ink);margin-top:3.5rem}
.appr__cols div{padding:1.75rem 0;border-bottom:1px solid var(--line)}
.appr__cols .mono{display:inline-block;background:var(--ink);color:var(--amber);padding:.25rem .55rem;margin-bottom:1.1rem}
.appr__cols p{margin:0}
@media(min-width:900px){.appr__cols{grid-template-columns:repeat(4,1fr)}.appr__cols div{border-bottom:0;border-right:1px solid var(--line);padding:2rem 1.75rem 0}.appr__cols div:first-child{padding-left:0}.appr__cols div:last-child{border-right:0}}
.note{margin-top:2rem;color:var(--mute);font-size:.875rem}

/* Experience: ticket flow */
.flow{list-style:none;margin:3.5rem 0 0;padding:0;display:grid;gap:1px;background:var(--line-d);border:1px solid var(--line-d)}
.flow li{background:var(--ink);padding:1.75rem 1.5rem 2rem;position:relative}
.flow .n{font:500 3.25rem/1 var(--mono);color:var(--amber);display:block;margin-bottom:1.5rem;letter-spacing:-.04em}
.flow h3{color:#fff}.flow p{margin:0}
@media(min-width:900px){.flow{grid-template-columns:repeat(4,1fr)}.flow li{padding:2rem 1.75rem 2.5rem}.flow li:not(:last-child)::after{content:"";position:absolute;right:-7px;top:3.1rem;width:13px;height:13px;background:var(--ink);border-top:2px solid var(--amber);border-right:2px solid var(--amber);transform:rotate(45deg);z-index:2}}

/* Schematic */
.brk{background:var(--steel)}
.schem{border:2px solid var(--ink);background:var(--ink);margin-top:3rem}
.schem svg{display:block;width:100%;height:auto}
.legend{list-style:none;margin:0;padding:0;display:grid;border:2px solid var(--ink);border-top:0;background:var(--paper)}
.legend li{display:grid;grid-template-columns:2.5rem 1fr;gap:.25rem 1rem;padding:1.25rem 1.25rem;border-bottom:1px solid var(--line)}
.legend li:last-child{border-bottom:0}
.legend b{grid-row:span 2;width:2.5rem;height:2.5rem;background:var(--amber);display:grid;place-items:center;font-weight:800;font-size:1.25rem}
.legend strong{font-weight:700;letter-spacing:-.01em}.legend span{color:var(--tx);font-size:.9375rem}
@media(min-width:800px){.legend{grid-template-columns:repeat(4,1fr)}.legend li{border-bottom:0;border-right:1px solid var(--line)}.legend li:last-child{border-right:0}}

/* Area */
.area{background:var(--paper)}
.area__g{display:grid;gap:3rem}
@media(min-width:900px){.area__g{grid-template-columns:1.2fr .8fr;gap:5rem;align-items:center}}
.area h2{max-width:16ch}
.panel{border:2px solid var(--ink);background:#fff}
.panel dl{margin:0}
.panel div{display:grid;grid-template-columns:8rem 1fr;gap:1rem;padding:1rem 1.25rem;border-bottom:1px solid var(--line)}
.panel div:last-child{border-bottom:0}
.panel dt{color:var(--mute)}.panel dd{margin:0;font-weight:700}
.panel .h{background:var(--ink);color:var(--amber);padding:.75rem 1.25rem}
.fine{font-size:.875rem;color:var(--mute);margin-top:1.25rem}

/* FAQ */
.faq{background:var(--steel)}
.faq__g{display:grid;gap:3rem}
@media(min-width:900px){.faq__g{grid-template-columns:.8fr 1.2fr;gap:5rem}}
details{background:var(--paper);border:2px solid var(--ink);margin-bottom:-2px}
summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:1.5rem;min-height:4.25rem;padding:1rem 1.25rem;font-weight:700;font-size:1.125rem;letter-spacing:-.015em;transition:background .2s}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";flex:none;width:2rem;height:2rem;display:grid;place-items:center;background:var(--ink);color:var(--amber);font:500 1.25rem var(--mono);transition:transform .25s var(--ease)}
details[open] summary{background:var(--amber)}
details[open] summary::after{transform:rotate(45deg)}
summary:hover{background:#fff}details[open] summary:hover{background:var(--amber)}
summary:focus-visible{outline-offset:-5px;outline-color:var(--ink)}
details p{margin:0;padding:1.25rem 1.25rem 1.5rem;border-top:2px solid var(--ink);max-width:40rem}
details[open] p{animation:fd .3s var(--ease)}@keyframes fd{from{opacity:0;transform:translateY(-4px)}}

/* CTA */
.cta{background:var(--amber);color:var(--ink)}
.cta p{color:#2A2100}
.cta__g{display:grid;gap:3rem}
@media(min-width:960px){.cta__g{grid-template-columns:1fr 1fr;gap:5rem;align-items:start}}
.cta h2{font-size:clamp(2.6rem,1.4rem + 5.4vw,5.6rem);line-height:.94;letter-spacing:-.045em;margin-bottom:1.5rem}
.cta .kick{color:#2A2100}.cta .kick::before{background:var(--ink)}
.form{background:var(--paper);border:2px solid var(--ink);padding:1.5rem;display:grid;gap:1.25rem;box-shadow:8px 8px 0 var(--ink)}
@media(min-width:640px){.form{padding:2rem}}
.f{display:grid;gap:.45rem;border:0;padding:0;margin:0;min-width:0}
.f label,.f legend{font:500 .75rem var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--mute);padding:0}
.f input:not([type=radio]),.f select,.f textarea{width:100%;min-height:3.25rem;padding:.75rem .9rem;background:#fff;color:var(--ink);border:2px solid var(--ink);border-radius:0;font:inherit}
.f textarea{min-height:7rem;resize:vertical}
.f input:not([type=radio]):focus,.f select:focus,.f textarea:focus{outline:3px solid var(--amber);outline-offset:0;background:#fffdf3}
.seg{display:grid;grid-template-columns:1fr 1fr}
.seg label{position:relative;display:block;text-transform:none;letter-spacing:0;font:700 1rem var(--sans);color:var(--ink)}
.seg input{position:absolute;opacity:0;inset:0}
.seg span{display:flex;align-items:center;justify-content:center;min-height:3.25rem;border:2px solid var(--ink);margin-left:-2px;background:#fff;cursor:pointer;transition:background .2s}
.seg label:first-child span{margin-left:0}
.seg input:checked+span{background:var(--ink);color:var(--amber)}
.seg input:focus-visible+span{outline:3px solid var(--amber);outline-offset:2px}
.status{margin:0;min-height:1.5rem;font-weight:700;font-size:.9375rem}

/* Footer */
.ftr{background:var(--ink);color:#fff;padding-block:4rem 2.5rem}
.ftr p{color:var(--tx-d)}
.ftr__g{display:grid;gap:2.5rem}
@media(min-width:900px){.ftr__g{grid-template-columns:1fr auto;align-items:end}}
.ftr ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.25rem 1.75rem}
.ftr li a{text-decoration:none;display:inline-block;padding:.5rem 0;color:var(--tx-d);font-size:.9375rem}
.ftr li a:hover{color:var(--amber)}
.ftr small.legal{display:block;margin-top:2.5rem;padding-top:1.5rem;border-top:1px solid var(--line-d);color:var(--mute-d);font-size:.8125rem;line-height:1.6}
.ftr small.legal a{color:var(--amber)}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition-duration:.01ms!important;scroll-behavior:auto!important}.pipe{stroke-dashoffset:0}}
.ticket{width:min(88%,21rem)}
@media(max-width:959px){.ticket{width:100%}}
.panel .h{display:block}
@media(min-width:360px){.brand small{display:block}}