/* Fizz Lab — a home-carbonation notebook. No external fonts. */
:root{
  --paper:#f2ede2;
  --paper-2:#e8e0cf;
  --card:#fbf8f1;
  --ink:#1f3a2e;
  --ink-2:#3d5247;
  --muted:#6f7c73;
  --rule:#cfc6b3;
  --grid:rgba(31,58,46,.07);
  --tomato:#c8472e;
  --mustard:#c9962d;
  --tape:rgba(214,196,150,.72);
  --wrap:1160px;
  --serif:"Iowan Old Style","Palatino Linotype","Book Antiqua",Palatino,Charter,"Bitstream Charter",Georgia,serif;
  --sans:"Segoe UI",-apple-system,BlinkMacSystemFont,Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"Cascadia Mono","SF Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--serif);font-size:18px;line-height:1.62;color:var(--ink);background:var(--paper);
  min-height:100vh;display:flex;flex-direction:column;-webkit-font-smoothing:antialiased}
a{color:var(--ink);text-decoration-color:var(--tomato);text-decoration-thickness:1.5px;text-underline-offset:3px}
a:hover{color:var(--tomato)}
img,svg{max-width:100%}
:focus-visible{outline:2px solid var(--tomato);outline-offset:3px}
::selection{background:#f0d9a0}
h1,h2,h3,h4{font-weight:600;line-height:1.1;margin:0;letter-spacing:-.01em}
em{font-style:italic}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:var(--paper);padding:10px 14px;font-family:var(--sans)}
.skip:focus{left:12px;top:12px;z-index:60}
.sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.label{font-family:var(--mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.graph{background-color:var(--card);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:22px 22px}

/* ---------- header ---------- */
.site-header{background:var(--paper);position:relative;z-index:30;border-bottom:3px double var(--ink)}
.site-header .wrap{display:flex;align-items:center;gap:30px;min-height:78px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink);margin-right:auto}
.brand svg{width:36px;height:36px;flex:none}
.brand span{font-size:1.55rem;font-style:italic;font-weight:600;letter-spacing:-.02em;line-height:1}
.brand small{display:block;font-family:var(--mono);font-style:normal;font-size:.6rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-top:4px;font-weight:400}
.site-nav ul{display:flex;gap:28px;list-style:none;margin:0;padding:0}
.site-nav a{font-family:var(--sans);font-size:.93rem;font-weight:600;text-decoration:none;color:var(--ink-2);padding:6px 0;border-bottom:2px solid transparent}
.site-nav a:hover{color:var(--ink);border-bottom-color:var(--rule)}
.site-nav a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--tomato)}
.nav-toggle{display:none;width:44px;height:44px;border:1.5px solid var(--ink);border-radius:4px;background:transparent;color:var(--ink);cursor:pointer;align-items:center;justify-content:center;padding:0}
.nav-toggle svg{width:20px;height:20px}
.nav-toggle .i-close,.nav-toggle[aria-expanded="true"] .i-open{display:none}
.nav-toggle[aria-expanded="true"] .i-close{display:block}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--sans);font-weight:700;font-size:.95rem;padding:14px 22px;border-radius:4px;
  background:var(--ink);color:var(--paper);border:1.5px solid var(--ink);text-decoration:none;cursor:pointer;transition:background .15s,color .15s}
.btn svg{width:18px;height:18px;flex:none;transition:transform .15s}
.btn:hover{background:var(--tomato);border-color:var(--tomato);color:#fff}
.btn:hover svg{transform:translateX(3px)}
.btn.line{background:transparent;color:var(--ink)}
.btn.line:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.tlink{font-family:var(--sans);font-weight:700;font-size:.95rem;display:inline-flex;align-items:center;gap:8px;text-decoration:none;border-bottom:1.5px solid var(--tomato);padding-bottom:2px}
.tlink svg{width:16px;height:16px}

main{flex:1 0 auto}

/* ---------- hero ---------- */
.hero{padding:64px 0 70px;border-bottom:1px solid var(--rule)}
.hero .wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.hero .label{display:block;margin-bottom:22px}
.hero h1{font-size:clamp(2.7rem,6vw,4.9rem);font-weight:600;letter-spacing:-.025em;line-height:1.02;margin-bottom:24px}
.hero h1 em{color:var(--tomato);font-weight:500}
.hero p{font-size:1.2rem;color:var(--ink-2);max-width:44ch;margin:0 0 32px}
.hero .cta{display:flex;gap:24px;align-items:center;flex-wrap:wrap}
.plate{position:relative;border:1.5px solid var(--ink);padding:24px;transform:rotate(1.2deg);box-shadow:0 1px 0 var(--rule),0 18px 30px -18px rgba(31,58,46,.35)}
.plate::before,.plate::after{content:"";position:absolute;width:110px;height:28px;background:var(--tape);top:-14px}
.plate::before{left:22px;transform:rotate(-6deg)}
.plate::after{right:22px;transform:rotate(5deg)}
.plate svg{display:block;width:100%;height:auto}
.plate figcaption{font-style:italic;font-size:.92rem;color:var(--muted);border-top:1px dashed var(--rule);margin-top:12px;padding-top:10px;display:flex;justify-content:space-between;gap:10px}
.plate figcaption span{font-family:var(--mono);font-style:normal;font-size:.68rem;letter-spacing:.1em;text-transform:uppercase}

/* ---------- sections ---------- */
.section{padding:84px 0}
.section.alt{background:var(--paper-2)}
.shead{display:grid;grid-template-columns:auto 1fr auto;gap:22px;align-items:baseline;margin-bottom:40px}
.shead .no{font-family:var(--mono);font-size:.78rem;color:var(--tomato)}
.shead h2{font-size:clamp(2rem,4vw,3rem);font-weight:600}
.shead a{font-family:var(--sans);font-weight:700;font-size:.9rem}

/* ---------- recipe index cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px}
.rcard{position:relative;display:flex;flex-direction:column;background:var(--card);border:1px solid var(--rule);text-decoration:none;color:var(--ink);
  box-shadow:0 1px 0 var(--rule),0 14px 24px -18px rgba(31,58,46,.4);transition:transform .2s}
.rcard:nth-child(3n+1){transform:rotate(-.6deg)}.rcard:nth-child(3n+3){transform:rotate(.6deg)}
.rcard:hover{transform:rotate(0) translateY(-4px);color:var(--ink)}
.rcard .top{border-bottom:2px solid var(--tomato);padding:14px 18px 10px;display:flex;justify-content:space-between;align-items:baseline;font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.rcard .top b{color:var(--tomato);font-weight:400}
.rcard .pic{height:170px;display:grid;place-items:center;border-bottom:1px solid var(--rule)}
.rcard .pic svg{height:150px;width:auto}
.rcard .body{padding:16px 18px 18px;flex:1;display:flex;flex-direction:column;
  background-image:repeating-linear-gradient(transparent 0 27px,rgba(31,58,46,.1) 27px 28px);background-position:0 12px}
.rcard h3{font-size:1.55rem;font-weight:600;margin:0 0 8px;line-height:1.05}
.rcard p{margin:0 0 16px;color:var(--ink-2);font-size:1rem;line-height:28px}
.meta{display:flex;gap:18px;flex-wrap:wrap;margin-top:auto;font-family:var(--sans);font-size:.84rem;color:var(--ink-2)}
.meta span{display:inline-flex;align-items:center;gap:6px}
.meta svg{width:16px;height:16px;color:var(--tomato)}

/* ---------- two methods ---------- */
.methods{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.diagram{border:1.5px solid var(--ink);padding:18px}
.diagram svg{display:block;width:100%;height:auto}
.methods h2{font-size:clamp(2rem,4vw,3rem);font-weight:600;margin-bottom:18px}
.methods p{color:var(--ink-2);margin:0 0 18px}
.notes{list-style:none;margin:26px 0 30px;padding:0;counter-reset:n;border-top:1px solid var(--rule)}
.notes li{counter-increment:n;display:grid;grid-template-columns:44px 1fr;gap:10px;padding:14px 0;border-bottom:1px solid var(--rule);color:var(--ink-2)}
.notes li::before{content:counter(n,decimal-leading-zero);font-family:var(--mono);font-size:.8rem;color:var(--tomato);padding-top:4px}
.notes b{color:var(--ink)}

/* ---------- start-here strip ---------- */
.strip{border:1.5px solid var(--ink);display:grid;grid-template-columns:auto 1fr auto;gap:30px;align-items:center;padding:28px 32px;background:var(--card)}
.strip svg.big{width:72px;height:72px}
.strip h2{font-size:1.9rem;font-weight:600;margin-bottom:6px}
.strip p{margin:0;color:var(--ink-2)}

/* ---------- page head ---------- */
.page-head{padding:60px 0 44px;border-bottom:1px solid var(--rule)}
.page-head .label{display:block;margin-bottom:16px}
.page-head h1{font-size:clamp(2.5rem,5.6vw,4.4rem);font-weight:600;letter-spacing:-.02em;max-width:18ch}
.page-head p{font-size:1.2rem;color:var(--ink-2);max-width:56ch;margin:20px 0 0}

/* ---------- recipe page ---------- */
.recipe-head{display:grid;grid-template-columns:1fr 280px;gap:40px;align-items:end;padding:56px 0 34px;border-bottom:1px solid var(--rule)}
.recipe-head h1{font-size:clamp(2.6rem,6vw,4.6rem);font-weight:600;letter-spacing:-.025em;margin:14px 0 18px}
.recipe-head p{font-size:1.18rem;color:var(--ink-2);max-width:52ch;margin:0}
.recipe-head .pic{display:grid;place-items:center}
.recipe-head .pic svg{height:230px;width:auto}
.facts{display:flex;flex-wrap:wrap;gap:0;border-bottom:1px solid var(--rule)}
.facts div{padding:18px 30px 18px 0;margin-right:30px;border-right:1px solid var(--rule);display:flex;gap:12px;align-items:center}
.facts div:last-child{border-right:0}
.facts svg{width:22px;height:22px;color:var(--tomato);flex:none}
.facts .label{display:block}
.facts b{display:block;font-size:1.15rem;font-weight:600}
.recipe-body{display:grid;grid-template-columns:340px 1fr;gap:56px;padding:48px 0 20px;align-items:start}
.ing{position:sticky;top:24px;background:var(--card);border:1px solid var(--rule);box-shadow:0 14px 24px -18px rgba(31,58,46,.4)}
.ing h2{font-size:1.35rem;padding:16px 20px 12px;border-bottom:2px solid var(--tomato);display:flex;justify-content:space-between;align-items:baseline}
.ing h2 .label{font-size:.64rem}
.ing ul{list-style:none;margin:0;padding:6px 20px 16px;background-image:repeating-linear-gradient(transparent 0 43px,rgba(31,58,46,.12) 43px 44px);background-position:0 6px}
.ing li{display:flex;align-items:center;gap:12px;min-height:44px;font-size:1rem}
.ing label{display:flex;align-items:center;gap:12px;flex:1;cursor:pointer}
.ing input{appearance:none;-webkit-appearance:none;width:18px;height:18px;border:1.5px solid var(--ink);border-radius:3px;margin:0;flex:none;display:grid;place-items:center;cursor:pointer;background:var(--card)}
.ing input:checked{background:var(--ink)}
.ing input:checked::after{content:"";width:9px;height:5px;border-left:2px solid var(--paper);border-bottom:2px solid var(--paper);transform:rotate(-45deg) translate(1px,-1px)}
.ing input:checked + span{text-decoration:line-through;text-decoration-color:var(--tomato);color:var(--muted)}
.ing .amt{margin-left:auto;font-family:var(--mono);font-size:.82rem;color:var(--tomato);white-space:nowrap;padding-left:10px}
.ing .sub{font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);min-height:44px;display:flex;align-items:flex-end;padding-bottom:6px}
.method h2{font-size:1.8rem;margin:0 0 20px}
.method h2:not(:first-child){margin-top:44px}
.method ol{list-style:none;margin:0;padding:0;counter-reset:s}
.method ol li{counter-increment:s;display:grid;grid-template-columns:58px 1fr;gap:8px;padding:0 0 26px;color:var(--ink-2);font-size:1.08rem}
.method ol li::before{content:counter(s);font-size:2.2rem;line-height:1;color:var(--tomato);font-style:italic;font-weight:500}
.method ol li b{color:var(--ink)}
.labnote{border-left:3px solid var(--mustard);background:rgba(201,150,45,.1);padding:16px 20px;margin:10px 0 26px;font-style:italic;color:var(--ink-2)}
.labnote strong{font-style:normal;font-family:var(--mono);font-weight:400;font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;display:block;color:var(--mustard);margin-bottom:6px}
.more{display:flex;gap:14px;flex-wrap:wrap;margin-top:10px}
.more a{display:flex;align-items:center;gap:12px;border:1px solid var(--rule);background:var(--card);padding:10px 16px 10px 10px;text-decoration:none;font-weight:600}
.more a:hover{border-color:var(--ink)}
.more svg{width:34px;height:40px}

/* ---------- article ---------- */
.article{max-width:720px;padding:46px 0 10px}
.article p,.article li{font-size:1.12rem;color:var(--ink-2);line-height:1.72}
.article h2{font-size:1.9rem;margin:48px 0 14px}
.article .drop::first-letter{float:left;font-size:4.2rem;line-height:.82;padding:6px 10px 0 0;color:var(--tomato);font-weight:600}
.article figure{margin:36px 0;border:1.5px solid var(--ink);padding:16px}
.article figure svg{display:block;width:100%;height:auto}
.article figcaption{font-style:italic;font-size:.95rem;color:var(--muted);margin-top:10px}
table.chart{width:100%;border-collapse:collapse;margin:22px 0 30px;font-size:1rem}
table.chart th{font-family:var(--mono);font-weight:400;font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);text-align:left;border-bottom:2px solid var(--ink);padding:0 12px 10px 0}
table.chart td{border-bottom:1px solid var(--rule);padding:12px 12px 12px 0;color:var(--ink-2)}
table.chart td:first-child{color:var(--ink);font-weight:600}

/* ---------- footer ---------- */
.site-footer{flex-shrink:0;background:var(--ink);color:#c9d3cd;margin-top:80px}
.site-footer .wrap{padding-top:52px;padding-bottom:28px}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
.fgrid .brand{color:var(--paper)}
.fgrid .brand small{color:#93a39a}
.fgrid p{color:#a9b7af;font-size:1rem;max-width:36ch;margin:16px 0 0}
.site-footer h2{font-family:var(--mono);font-weight:400;font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:#93a39a;margin:0 0 14px}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.site-footer a{color:var(--paper);text-decoration:none;font-family:var(--sans);font-size:.94rem}
.site-footer a:hover{color:#f0d9a0}
.fine{border-top:1px solid rgba(255,255,255,.14);margin-top:40px;padding-top:16px;font-family:var(--mono);font-size:.7rem;color:#93a39a;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .methods{grid-template-columns:1fr;gap:36px}
  .recipe-body{grid-template-columns:1fr;gap:36px}
  .ing{position:static}
}
@media (max-width:820px){
  .nav-toggle{display:inline-flex}
  .site-nav{display:none;width:100%;padding:0 0 18px}
  .site-nav.open{display:block}
  .site-nav ul{flex-direction:column;gap:0}
  .site-nav li{border-top:1px solid var(--rule)}
  .site-nav a{display:block;padding:14px 0;font-size:1.05rem;border:0}
  .hero .wrap{grid-template-columns:1fr;gap:48px}
  .plate{max-width:520px;margin:0 auto;width:100%}
  .recipe-head{grid-template-columns:1fr;gap:10px}
  .recipe-head .pic{order:-1;justify-content:start}
  .recipe-head .pic svg{height:160px}
  .strip{grid-template-columns:1fr;text-align:left;gap:16px}
  .fgrid{grid-template-columns:1fr 1fr}
  .fgrid > div:first-child{grid-column:1/-1}
}
@media (max-width:600px){
  body{font-size:17px}
  .wrap{padding:0 18px}
  .cards{grid-template-columns:1fr}
  .rcard:nth-child(n){transform:none}
  .section{padding:60px 0}
  .shead{grid-template-columns:1fr;gap:6px}
  .facts div{padding:14px 18px 14px 0;margin-right:18px}
  .method ol li{grid-template-columns:40px 1fr}
  .method ol li::before{font-size:1.8rem}
  .hero{padding:40px 0 50px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}