@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  --paper: #FAF7F0;
  --paper-card: #FFFFFF;
  --ink: #1F2A24;
  --ink-soft: #55605A;
  --rule: #D8D0BC;
  --green: #2F6F52;
  --green-deep: #1E4B38;
  --brass: #B8863B;
  --brass-soft: #E7D4AC;
  --danger: #A6432F;

  --font-display: 'Fraunces', serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%;}
a{color:inherit;}

.wrap{
  max-width:1080px;
  margin:0 auto;
  padding:0 24px;
}

/* Header */
header.site{
  border-bottom:1px solid var(--rule);
  background:var(--paper);
  position:sticky;
  top:0;
  z-index:20;
}
header.site .wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:18px;
  padding-bottom:18px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-display);
  font-weight:600;
  font-size:1.35rem;
  text-decoration:none;
  color:var(--ink);
}
.brand svg{width:28px;height:28px;}
nav.main-nav{
  display:flex;
  gap:28px;
  font-size:0.95rem;
  font-weight:500;
}
nav.main-nav a{
  text-decoration:none;
  color:var(--ink-soft);
  border-bottom:2px solid transparent;
  padding-bottom:4px;
  transition:color .15s, border-color .15s;
}
nav.main-nav a:hover, nav.main-nav a.active{
  color:var(--green-deep);
  border-color:var(--brass);
}

/* Hero */
.hero{
  padding:76px 0 60px;
  border-bottom:1px solid var(--rule);
}
.hero .wrap{
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:48px;
  align-items:center;
}
.eyebrow{
  font-family:var(--font-mono);
  font-size:0.78rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--brass);
  font-weight:600;
  margin-bottom:14px;
}
h1{
  font-family:var(--font-display);
  font-size:clamp(2.1rem, 4vw, 3.1rem);
  line-height:1.1;
  margin:0 0 18px;
  font-weight:600;
  color:var(--green-deep);
}
.hero p.lead{
  font-size:1.08rem;
  color:var(--ink-soft);
  max-width:46ch;
  margin:0 0 28px;
}
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--green);
  color:#fff;
  text-decoration:none;
  padding:13px 22px;
  border-radius:3px;
  font-weight:600;
  font-size:0.95rem;
  border:1px solid var(--green-deep);
  transition:background .15s, transform .1s;
}
.btn:hover{background:var(--green-deep);}
.btn:active{transform:translateY(1px);}
.btn.ghost{
  background:transparent;
  color:var(--green-deep);
  border:1px solid var(--rule);
}
.btn.ghost:hover{border-color:var(--green);}

/* Abacus signature illustration */
.abacus-frame{
  background:var(--paper-card);
  border:1px solid var(--rule);
  border-radius:6px;
  padding:28px;
}
.bead{ transition: transform .6s cubic-bezier(.2,.8,.2,1); }
.rod-label{ font-family:var(--font-mono); font-size:10px; fill:var(--ink-soft); }

/* Tools grid */
.section{padding:64px 0;}
.section-head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  margin-bottom:32px;
  border-bottom:1px solid var(--rule);
  padding-bottom:16px;
}
.section-head h2{
  font-family:var(--font-display);
  font-size:1.8rem;
  margin:0;
  color:var(--green-deep);
  font-weight:600;
}
.section-head span{
  font-family:var(--font-mono);
  font-size:0.82rem;
  color:var(--ink-soft);
}

.tools-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:1px;
  background:var(--rule);
  border:1px solid var(--rule);
}
.tool-card{
  background:var(--paper-card);
  padding:26px 24px;
  text-decoration:none;
  color:var(--ink);
  display:flex;
  flex-direction:column;
  gap:10px;
  min-height:190px;
  position:relative;
  transition:background .15s;
}
.tool-card:hover{background:#FFFDF8;}
.tool-card:hover .tool-arrow{transform:translateX(4px);}
.tool-num{
  font-family:var(--font-mono);
  font-size:0.78rem;
  color:var(--brass);
  font-weight:600;
}
.tool-card h3{
  font-family:var(--font-display);
  font-size:1.2rem;
  margin:0;
  font-weight:600;
}
.tool-card p{
  font-size:0.9rem;
  color:var(--ink-soft);
  margin:0;
  flex-grow:1;
}
.tool-status{
  font-family:var(--font-mono);
  font-size:0.72rem;
  color:var(--ink-soft);
}
.tool-status.soon{color:#9B9282;}
.tool-arrow{
  font-family:var(--font-mono);
  font-size:0.85rem;
  color:var(--green-deep);
  transition:transform .15s;
}

/* Calculator page */
.calc-wrap{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:40px;
  padding:48px 0 72px;
  align-items:start;
}
.calc-panel{
  background:var(--paper-card);
  border:1px solid var(--rule);
  border-radius:6px;
  padding:32px;
}
.field{margin-bottom:22px;}
.field label{
  display:block;
  font-size:0.85rem;
  font-weight:600;
  margin-bottom:8px;
  color:var(--ink);
}
.field .hint{
  font-size:0.78rem;
  color:var(--ink-soft);
  margin-top:5px;
}
.field input, .field select{
  width:100%;
  font-family:var(--font-mono);
  font-size:1rem;
  padding:11px 12px;
  border:1px solid var(--rule);
  border-radius:3px;
  background:var(--paper);
  color:var(--ink);
}
.field input:focus, .field select:focus{
  outline:2px solid var(--green);
  outline-offset:1px;
  border-color:var(--green);
}

.ledger{
  border:1px solid var(--rule);
  border-radius:6px;
  overflow:hidden;
}
.ledger-head{
  background:var(--green-deep);
  color:#fff;
  padding:20px 28px;
  font-family:var(--font-display);
  font-size:1.15rem;
  font-weight:600;
}
.ledger-body{padding:8px 28px 24px;}
.ledger-row{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  padding:14px 0;
  border-bottom:1px dashed var(--rule);
  font-family:var(--font-mono);
}
.ledger-row:last-child{border-bottom:none;}
.ledger-row .label{
  font-family:var(--font-body);
  color:var(--ink-soft);
  font-size:0.92rem;
}
.ledger-row .value{
  font-size:1.05rem;
  font-weight:600;
}
.ledger-row.total .value{
  font-size:1.5rem;
  color:var(--green-deep);
}
.ledger-row.total .label{
  font-weight:600;
  color:var(--ink);
}

.ad-slot{
  border:1px dashed var(--rule);
  background:#FFFDF8;
  color:var(--ink-soft);
  font-family:var(--font-mono);
  font-size:0.78rem;
  text-align:center;
  padding:18px;
  border-radius:4px;
  margin:32px 0;
}

article.legal{
  padding:56px 0 80px;
  max-width:760px;
  margin:0 auto;
}
article.legal h1{margin-bottom:8px;}
article.legal .updated{
  font-family:var(--font-mono);
  font-size:0.8rem;
  color:var(--ink-soft);
  margin-bottom:36px;
}
article.legal h2{
  font-family:var(--font-display);
  font-size:1.3rem;
  color:var(--green-deep);
  margin-top:36px;
}
article.legal p, article.legal li{
  color:var(--ink-soft);
  font-size:0.98rem;
}

/* Blog */
.blog-grid{
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:1px;
  background:var(--rule);
  border:1px solid var(--rule);
}
.blog-card{
  background:var(--paper-card);
  padding:28px;
  text-decoration:none;
  color:var(--ink);
  display:flex;
  flex-direction:column;
  gap:10px;
  transition:background .15s;
}
.blog-card:hover{background:#FFFDF8;}
.blog-meta{
  font-family:var(--font-mono);
  font-size:0.72rem;
  color:var(--brass);
  text-transform:uppercase;
  letter-spacing:.06em;
}
.blog-card h3{
  font-family:var(--font-display);
  font-size:1.25rem;
  margin:0;
  font-weight:600;
  color:var(--green-deep);
}
.blog-card p{
  font-size:0.92rem;
  color:var(--ink-soft);
  margin:0;
}
.blog-read{
  font-family:var(--font-mono);
  font-size:0.8rem;
  color:var(--green-deep);
  margin-top:auto;
}

article.post{
  padding:56px 0 80px;
  max-width:700px;
  margin:0 auto;
}
article.post .post-meta{
  font-family:var(--font-mono);
  font-size:0.78rem;
  color:var(--ink-soft);
  margin-bottom:10px;
}
article.post h1{
  font-size:2.1rem;
  margin-bottom:22px;
}
article.post p{
  font-size:1.02rem;
  color:var(--ink-soft);
  line-height:1.7;
}
article.post h2{
  font-family:var(--font-display);
  font-size:1.35rem;
  color:var(--green-deep);
  margin-top:38px;
}
article.post ul{
  color:var(--ink-soft);
  font-size:1.02rem;
  line-height:1.7;
}
article.post .cta-box{
  margin-top:44px;
  padding:24px;
  background:var(--paper-card);
  border:1px solid var(--rule);
  border-radius:6px;
}
article.post .cta-box a.btn{margin-top:10px;}

@media (max-width: 860px){
  .blog-grid{grid-template-columns:1fr;}
}

footer.site{
  border-top:1px solid var(--rule);
  padding:40px 0;
  margin-top:40px;
}
footer.site .wrap{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:16px;
}
footer.site .foot-links{
  display:flex;
  gap:20px;
  font-size:0.85rem;
}
footer.site .foot-links a{text-decoration:none;color:var(--ink-soft);}
footer.site .foot-links a:hover{color:var(--green-deep);}
footer.site .copy{
  font-family:var(--font-mono);
  font-size:0.78rem;
  color:var(--ink-soft);
}

@media (max-width: 860px){
  .hero .wrap{grid-template-columns:1fr;}
  .tools-grid{grid-template-columns:1fr;}
  .calc-wrap{grid-template-columns:1fr;}
  nav.main-nav{display:none;}
}

@media (prefers-reduced-motion: reduce){
  .bead, .tool-arrow{transition:none;}
}