:root{
  --paper:#EFF3F6;
  --paper-alt:#FFFFFF;
  --ink:#16213E;
  --ink-soft:#4B5568;
  --accent:#E2A63B;
  --accent-ink:#5C3D0A;
  --accent2:#1F8A70;
  --line:#CBD3DC;
  --radius:3px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Inter',sans-serif;
  font-size:16px;
  line-height:1.6;
}
h1,h2,h3{
  font-family:'Space Grotesk',sans-serif;
  color:var(--ink);
  margin:0;
  letter-spacing:-0.01em;
}
p{margin:0 0 14px;}
a{color:inherit;}
.mono{font-family:'IBM Plex Mono',monospace;}
img{max-width:100%;}

/* ---------- Header ---------- */
header{
  position:sticky; top:0; z-index:50;
  background:rgba(239,243,246,0.94);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:1120px; margin:0 auto; padding:16px 24px;
  display:flex; align-items:center; justify-content:space-between;
}
.logo{
  font-family:'Space Grotesk',sans-serif; font-weight:700; font-size:19px;
  display:flex; align-items:center; gap:8px; text-decoration:none; color:var(--ink);
}
.logo .mark{
  width:20px; height:20px; border:2px solid var(--ink); border-radius:50%;
  position:relative; flex:none;
}
.logo .mark::after{
  content:""; position:absolute; width:8px; height:2px; background:var(--accent);
  top:9px; left:6px;
}
nav ul{list-style:none; display:flex; gap:28px; margin:0; padding:0;}
nav a{font-size:14.5px; font-weight:500; text-decoration:none; color:var(--ink-soft);
  padding:6px 0; border-bottom:2px solid transparent; transition:border-color .15s;}
nav a:hover, nav a.active{border-color:var(--accent); color:var(--ink);}
.navlist{display:flex;}
.navtoggle{display:none; background:none; border:none; cursor:pointer;}
@media (max-width:760px){
  .navlist{display:none; position:absolute; top:100%; left:0; right:0; background:var(--paper-alt);
    flex-direction:column; padding:12px 24px; border-bottom:1px solid var(--line); gap:4px;}
  .navlist.open{display:flex;}
  .navtoggle{display:block;}
}

/* ---------- Breadcrumb ---------- */
.breadcrumb{
  max-width:1120px; margin:0 auto; padding:16px 24px 0; font-size:13px; color:var(--ink-soft);
}
.breadcrumb a{text-decoration:none; color:var(--ink-soft);}
.breadcrumb a:hover{color:var(--ink);}
.breadcrumb span.sep{margin:0 6px; color:var(--line);}

/* ---------- Page hero (tool pages) ---------- */
.page-hero{
  max-width:1120px; margin:0 auto; padding:28px 24px 8px;
}
.page-hero h1{font-size:34px; line-height:1.15; font-weight:600; max-width:24ch;}
.page-hero p.lede{font-size:16px; color:var(--ink-soft); margin:14px 0 0; max-width:56ch;}
@media (max-width:600px){ .page-hero h1{font-size:26px;} }

/* ---------- Homepage hero ---------- */
.hero{
  max-width:1120px; margin:0 auto; padding:56px 24px 48px;
  display:grid; grid-template-columns:1.1fr 1fr; gap:56px; align-items:center;
}
@media (max-width:860px){ .hero{grid-template-columns:1fr; padding-top:36px;} }
.hero h1{font-size:44px; line-height:1.12; font-weight:600;}
@media (max-width:500px){ .hero h1{font-size:30px;} }
.hero p.lede{font-size:17px; color:var(--ink-soft); margin:20px 0 26px; max-width:46ch;}
.badges{display:flex; flex-wrap:wrap; gap:10px;}
.badge{
  font-size:12.5px; padding:6px 12px; border:1px solid var(--line);
  border-radius:20px; background:var(--paper-alt); color:var(--ink-soft);
  display:flex; align-items:center; gap:6px;
}
.badge .dot{width:6px; height:6px; border-radius:50%; background:var(--accent2); flex:none;}

/* ---------- Tool box (drop zone + workspace) ---------- */
.tool-box{
  background:var(--paper-alt); border:1px solid var(--line); border-radius:var(--radius);
  padding:22px; position:relative;
}
.tool-box.live::before{
  content:"live tool"; position:absolute; top:-11px; left:18px;
  background:var(--ink); color:var(--paper); font-family:'IBM Plex Mono',monospace;
  font-size:11px; padding:3px 9px; border-radius:2px; letter-spacing:0.02em;
}
.drop{
  border:1.5px dashed var(--line); border-radius:var(--radius); padding:30px 18px;
  text-align:center; cursor:pointer; transition:border-color .15s, background .15s;
}
.drop.drag{border-color:var(--accent); background:#FBF3E3;}
.drop p{margin:10px 0 2px; font-weight:500;}
.drop span{font-size:13px; color:var(--ink-soft);}
.drop svg{width:26px; height:26px; color:var(--ink-soft);}

.result{display:none; margin-top:16px;}
.result.show{display:block;}
.result-row{display:flex; justify-content:space-between; align-items:center; padding:10px 0; border-bottom:1px solid var(--line);}
.result-row:last-of-type{border-bottom:none;}
.result-label{font-size:13px; color:var(--ink-soft);}
.result-value{font-family:'IBM Plex Mono',monospace; font-size:13.5px; font-weight:500;}
.savings{color:var(--accent2); font-weight:600;}
.slider-row{margin:14px 0 4px;}
.slider-row label{font-size:13px; color:var(--ink-soft); display:flex; justify-content:space-between; margin-bottom:6px;}
input[type=range]{width:100%; accent-color:var(--accent);}
select{width:100%; padding:9px; border:1px solid var(--line); border-radius:3px; font-family:'Inter',sans-serif; background:var(--paper-alt); color:var(--ink);}

.btn{
  display:inline-block; border:none; border-radius:var(--radius); padding:11px 18px;
  font-family:'Inter',sans-serif; font-weight:600; font-size:14px; cursor:pointer;
  background:var(--ink); color:var(--paper); text-decoration:none; text-align:center;
}
.btn:hover{background:#0F1730;}
.btn.secondary{background:transparent; color:var(--ink); border:1px solid var(--line);}
.btn.full{width:100%; margin-top:14px;}
.btn:disabled{opacity:.5; cursor:not-allowed;}
input[type=file]{display:none;}
.thumb{max-width:100%; border-radius:2px; border:1px solid var(--line); margin-top:12px;}
.filelist{margin-top:12px; font-size:13px;}
.filelist .fitem{display:flex; justify-content:space-between; padding:7px 0; border-bottom:1px solid var(--line);}
.filelist .fitem:last-child{border-bottom:none;}
.note{font-size:12.5px; color:var(--ink-soft); margin-top:12px; line-height:1.5;}
canvas.hidden-canvas{display:none;}

/* ---------- Content sections ---------- */
section.block{max-width:1120px; margin:0 auto; padding:44px 24px;}
.block h2{font-size:24px; margin-bottom:18px;}
.steps{counter-reset:step; padding:0; list-style:none; margin:0;}
.steps li{
  display:flex; gap:14px; padding:14px 0; border-bottom:1px solid var(--line);
}
.steps li:last-child{border-bottom:none;}
.steps li::before{
  counter-increment:step; content:counter(step);
  font-family:'IBM Plex Mono',monospace; font-size:13px; color:var(--accent-ink);
  background:#FBF3E3; width:26px; height:26px; border-radius:50%;
  display:flex; align-items:center; justify-content:center; flex:none;
}
.steps li div p{margin:0; font-size:14.5px; color:var(--ink-soft);}
.steps li div strong{display:block; font-size:15px; margin-bottom:2px;}

.faq details{border-bottom:1px solid var(--line); padding:14px 0;}
.faq summary{font-weight:600; cursor:pointer; font-size:15px; list-style:none;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::before{content:"+ "; color:var(--accent-ink);}
.faq details[open] summary::before{content:"– ";}
.faq p{margin-top:10px; color:var(--ink-soft); font-size:14.5px;}

.related{display:flex; gap:12px; flex-wrap:wrap; margin-top:8px;}
.related a{
  border:1px solid var(--line); border-radius:20px; padding:8px 16px; font-size:13.5px;
  text-decoration:none; color:var(--ink-soft); background:var(--paper-alt);
}
.related a:hover{border-color:var(--ink); color:var(--ink);}

/* ---------- Category grid ---------- */
.grid{display:grid; grid-template-columns:repeat(3,1fr); gap:16px;}
@media (max-width:800px){ .grid{grid-template-columns:1fr 1fr;} }
@media (max-width:520px){ .grid{grid-template-columns:1fr;} }
.card{
  background:var(--paper-alt); border:1px solid var(--line); border-radius:var(--radius);
  padding:20px; display:block; text-decoration:none; transition:border-color .15s;
}
.card:hover{border-color:var(--ink);}
.card h3{font-size:16px; margin-bottom:6px; font-weight:600; color:var(--ink);}
.card p{font-size:13.5px; color:var(--ink-soft); margin:0;}
.card .tag{
  display:inline-block; font-family:'IBM Plex Mono',monospace; font-size:11px;
  color:var(--accent-ink); background:#FBF3E3; padding:2px 7px; border-radius:2px; margin-bottom:10px;
}

/* ---------- Footer ---------- */
footer{border-top:1px solid var(--line); padding:36px 24px; margin-top:40px;}
.footer-inner{max-width:1120px; margin:0 auto;}
.footer-cols{display:flex; justify-content:space-between; flex-wrap:wrap; gap:28px; margin-bottom:24px;}
.footer-cols h4{font-size:13px; margin-bottom:10px; color:var(--ink-soft); font-weight:600;}
.footer-cols ul{list-style:none; margin:0; padding:0;}
.footer-cols li{margin-bottom:6px;}
.footer-cols a{font-size:13.5px; text-decoration:none; color:var(--ink); }
.footer-cols a:hover{color:var(--accent-ink);}
.footer-bottom{font-size:13px; color:var(--ink-soft); border-top:1px solid var(--line); padding-top:18px;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;}

.legal{max-width:760px; margin:0 auto; padding:48px 24px;}
.legal h1{font-size:30px; margin-bottom:18px;}
.legal h2{font-size:19px; margin:28px 0 10px;}
.legal p{color:var(--ink-soft); font-size:14.5px;}