:root{
  --paper:#FAF8F3; --ink:#1C2A28; --teal:#2F6F62; --amber:#B5701F;
  --line:#DAD4C6; --muted:#6B6459;
}
*{box-sizing:border-box;}
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:'Spectral',Georgia,serif; line-height:1.6;
  min-height:100vh; display:flex; flex-direction:column;
}
header{flex:0 0 auto;}
main{flex:1 0 auto; width:100%;}
footer{flex:0 0 auto;}
.mono{font-family:'IBM Plex Mono',ui-monospace,monospace;}
a{color:var(--teal);}
header{
  background: #EAF2EF;
  border-bottom:1px solid #D3E3DD;
  padding:22px clamp(24px, 8vw, 140px);
  position:sticky; top:0; z-index:100;
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px;
}
header .mark{font-size:1.3rem; font-weight:600; letter-spacing:0.02em; text-decoration:none; color:var(--ink); display:flex; align-items:center;}
.site-logo{height:34px; width:auto; display:block;}
.site-logo-footer{height:26px; width:auto; display:block; margin:0 auto 8px;}
footer .fcap{margin-top:2px;}
header .mark span{color:var(--teal);}
header nav a{
  font-family:'IBM Plex Mono',monospace; font-size:1rem; color:var(--muted);
  text-decoration:none; margin-left:16px;
}
header nav a:hover{color:var(--teal);

}
main{max-width:760px; margin:0 auto; padding:0 24px 80px;}
.breadcrumb{font-family:'IBM Plex Mono',monospace; font-size:0.72rem; color:var(--muted); padding:20px 0 0;}
.breadcrumb a{color:var(--muted); text-decoration:none;}
.breadcrumb a:hover{color:var(--teal);}
.intro{padding:28px 0 24px; max-width:540px;}
.intro h1{font-size:1.85rem; font-weight:500; margin:0 0 10px; line-height:1.25;}
.intro p{color:var(--muted); font-size:1rem; margin:0;}
.tool{padding:28px 0 10px;}
.tool-label{font-family:'IBM Plex Mono',monospace; font-size:0.72rem; color:var(--amber); letter-spacing:0.04em; margin-bottom:6px;}
.tool h2{font-size:1.4rem; font-weight:500; margin:0 0 18px;}
.field-row{display:flex; gap:12px; flex-wrap:wrap; margin-bottom:14px;}
.field{flex:1; min-width:140px;}
.field label{display:block; font-family:'IBM Plex Mono',monospace; font-size:0.72rem; color:var(--muted); margin-bottom:6px;}
.field input,.field select{
  width:100%; padding:10px 12px; font-size:1rem;
  border:1px solid var(--line); border-radius:3px;
  background:transparent; color:var(--ink);
  font-family:'IBM Plex Mono',monospace;
}
.field input:focus,.field select:focus{outline:2px solid var(--teal); outline-offset:1px;}
.result{margin-top:16px; padding:16px 18px; border-left:3px solid var(--teal); font-family:'IBM Plex Mono',monospace;}
.result .num{font-size:1.6rem; font-weight:600; color:var(--teal);}
.result .cap{font-size:0.72rem; color:var(--muted);}
.explain{margin-top:26px; font-size:0.97rem;}
.explain p{margin:0 0 14px; max-width:62ch;}
.faq{margin-top:22px;}
.faq h3{font-size:0.78rem; font-family:'IBM Plex Mono',monospace; color:var(--muted); margin:0 0 12px; font-weight:500;}
.faq-item{padding:12px 0; border-top:1px solid var(--line); scroll-margin-top:90px;}
.faq-item:last-child{border-bottom:1px solid var(--line);}
.faq-item .q{font-weight:600; margin-bottom:6px;}
.faq-item .a{color:var(--muted); font-size:0.94rem; max-width:60ch;}
footer{background: #EAF2EF; border-top:1px solid var(--line); padding:28px 24px; text-align:center; color:var(--muted); font-family:'IBM Plex Mono',monospace; font-size:0.75rem;}
footer .flinks{margin-top:10px;}
footer .flinks a{color:var(--muted); text-decoration:none; margin:0 8px;}
footer .flinks a:hover{color:var(--teal);
}
.cat-block{padding:26px 0; border-top:1px solid var(--line);}
.cat-block h2{font-family:'IBM Plex Mono',monospace; font-size:0.78rem; color:var(--amber); letter-spacing:0.04em; margin:0 0 14px; font-weight:500;}
.cat-grid{display:grid; grid-template-columns:1fr 1fr; gap:10px;}
@media(max-width:520px){.cat-grid{grid-template-columns:1fr;}}
.cat-grid a{
  display:block; padding:14px 16px; border:1px solid var(--line); border-radius:4px;
  text-decoration:none; color:var(--ink); font-size:0.97rem;
}
.cat-grid a:hover{border-color:var(--teal);}
.legal h1{font-size:1.7rem; font-weight:500; margin:28px 0 20px;}
.legal h2{font-size:1.1rem; font-weight:600; margin:26px 0 10px;}
.legal p,.legal li{color:var(--ink); font-size:0.96rem; max-width:66ch;}
.legal .updated{font-family:'IBM Plex Mono',monospace; font-size:0.72rem; color:var(--muted); margin-bottom:22px;}

/* Blog */
.blog-grid{display:flex; flex-direction:column; gap:28px; padding:24px 0;}
.blog-card{display:block; text-decoration:none; color:var(--ink); border:1px solid var(--line); border-radius:6px; overflow:hidden;}
.blog-card img{width:100%; display:block; aspect-ratio:1200/630; object-fit:cover;}
.blog-card .blog-card-body{padding:18px 20px;}
.blog-card .blog-date{font-family:'IBM Plex Mono',monospace; font-size:0.72rem; color:var(--amber); margin-bottom:6px;}
.blog-card h2{font-size:1.25rem; font-weight:500; margin:0 0 8px;}
.blog-card p{color:var(--muted); font-size:0.94rem; margin:0; max-width:65ch;}
.blog-post-banner{width:100%; border-radius:6px; margin:20px 0 8px; display:block;}
.blog-post-meta{font-family:'IBM Plex Mono',monospace; font-size:0.75rem; color:var(--muted); margin-bottom:6px;}
.blog-post h1{font-size:1.9rem; font-weight:500; margin:0 0 4px; line-height:1.25;}
.blog-post-body{margin-top:24px; font-size:1rem;}
.blog-post-body p{margin:0 0 16px; max-width:68ch;}
.blog-post-body h2{font-size:1.25rem; font-weight:600; margin:32px 0 12px;}
.blog-cta{margin-top:32px; padding:18px 20px; border-left:3px solid var(--teal); background:transparent;}
.blog-cta a{font-weight:600;}

/* Category sidebar */
main.main-wide{max-width:1200px;}
.tool-layout{display:flex; gap:72px; align-items:flex-start;}
.tool-layout .tool{flex:1; min-width:0;}
.category-sidebar{width:230px; flex-shrink:0; padding-top:28px; padding-left:28px; border-left:1px solid var(--line);}
.category-sidebar .sidebar-label{font-family:'IBM Plex Mono',monospace; font-size:0.7rem; color:var(--amber); letter-spacing:0.04em; margin-bottom:12px;}
.category-sidebar .sidebar-link{display:block; padding:10px 0; border-top:1px solid var(--line); text-decoration:none; color:var(--ink); font-size:0.92rem;}
.category-sidebar .sidebar-link:hover{color:var(--teal);}
@media (max-width:760px){
  main.main-wide{max-width:680px;}
  .tool-layout{flex-direction:column;}
  .category-sidebar{width:100%; padding-top:8px; padding-left:0; border-left:none; border-top:1px solid var(--line); margin-top:16px;}
}

/* Site search */
.site-search-wrap{position:relative; flex:1 1 200px; max-width:380px;}
.site-search-wrap input{
  width:100%; padding:9px 12px; font-family:'IBM Plex Mono',monospace; font-size:0.85rem;
  border:1px solid #C7D9D2; border-radius:4px; background:#fff; color:var(--ink);
}
.site-search-wrap input:focus{outline:2px solid var(--teal); outline-offset:1px;}
.search-results{
  position:absolute; top:calc(100% + 6px); left:0; right:0; background:var(--paper);
  border:1px solid var(--line); border-radius:6px; max-height:380px; overflow-y:auto;
  z-index:50; box-shadow:0 10px 28px rgba(0,0,0,0.12); display:none;
}
.search-results.active{display:block;}
.search-result-item{
  display:flex; align-items:baseline; gap:8px; padding:10px 14px; text-decoration:none;
  color:var(--ink); border-bottom:1px solid var(--line); font-size:0.88rem;
}
.search-result-item:last-child{border-bottom:none;}
.search-result-item:hover{background:rgba(47,111,98,0.08);}
.search-result-tag{font-family:'IBM Plex Mono',monospace; font-size:0.65rem; color:var(--amber); flex-shrink:0;}
.search-no-results{padding:14px; color:var(--muted); font-size:0.85rem;}
@media (max-width:640px){
  .site-search-wrap{order:3; flex:1 1 100%; max-width:none;}
}

/* Trust section */
.trust-row{display:flex; gap:28px; flex-wrap:wrap; padding:4px 0 36px; border-bottom:1px solid var(--line); margin-bottom:8px;}
.trust-item{flex:1; min-width:180px;}
.trust-item .t-label{font-family:'IBM Plex Mono',monospace; font-size:0.72rem; color:var(--teal); letter-spacing:0.04em; margin-bottom:6px;}
.trust-item p{font-size:0.86rem; color:var(--muted); margin:0; line-height:1.5;}

/* Health disclaimer notice */
.health-notice{
  display:flex; gap:10px; align-items:flex-start;
  margin-top:16px; padding:14px 16px;
  border:1px solid var(--amber); border-radius:6px;
  background:rgba(181,112,31,0.08);
  font-size:0.86rem; color:var(--ink);
}
.health-notice .icon{flex-shrink:0; font-size:1rem; line-height:1.4;}

/* Mobile: compact header (sticky) */
@media (max-width:640px){
  header{padding:10px 16px;}
}

/* Blog: 3-column grid + post sidebar */
main.main-blog{max-width:1100px;}
.blog-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:24px; padding:24px 0;}
.blog-card{display:flex; flex-direction:column;}
.blog-card h2{font-size:1.1rem; line-height:1.3;}
.blog-card p{font-size:0.88rem; display:-webkit-box; -webkit-line-clamp:3; -webkit-box-orient:vertical; overflow:hidden;}
@media (max-width:900px){.blog-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:600px){.blog-grid{grid-template-columns:1fr;}}
.blog-layout{gap:48px;}
.tool-layout .blog-post{flex:1; min-width:0;}
.blog-layout .category-sidebar{position:sticky; top:96px;}
.sidebar-label-gap{margin-top:28px;}
@media (max-width:760px){.blog-layout .category-sidebar{position:static;}}
.blog-layout .blog-post-body p{max-width:none;}

/* Calculator content: sub-headings + related links */
.explain h3{font-size:1.05rem; font-weight:600; margin:24px 0 8px;}
.related{margin-top:26px; padding:16px 18px; border-left:3px solid var(--amber);}
.related h3{font-family:'IBM Plex Mono',monospace; font-size:0.78rem; color:var(--muted); font-weight:500; margin:0 0 10px;}
.related ul{margin:0; padding-left:18px;}
.related li{margin:4px 0;}

/* Sticky sidebar on all tool pages (desktop only) */
.tool-layout .category-sidebar{
  position:sticky;
  top:96px;
  max-height:calc(100vh - 116px);
  overflow-y:auto;
}
@media (max-width:760px){
  .tool-layout .category-sidebar{position:static; max-height:none; overflow:visible;}
}


/* Result actions: Copy / Share / Reset */
.result-actions{display:flex; flex-wrap:wrap; align-items:center; gap:8px; margin:10px 0 4px;}
.ra-btn{
  font-family:'IBM Plex Mono',monospace; font-size:0.74rem; color:var(--ink);
  background:transparent; border:1px solid var(--line); border-radius:4px;
  padding:7px 12px; cursor:pointer;
}
.ra-btn:hover{border-color:var(--teal); color:var(--teal);}
.ra-btn:focus-visible{outline:2px solid var(--teal); outline-offset:1px;}
.ra-status{font-family:'IBM Plex Mono',monospace; font-size:0.74rem; color:var(--teal); margin-left:4px;}

/* Share menu (desktop) */
.result-actions{position:relative;}
.ra-menu{
  position:absolute; top:100%; left:0; z-index:30; margin-top:8px; width:300px; max-width:92vw;
  background:#fff; border:1px solid var(--line); border-radius:10px;
  box-shadow:0 10px 28px rgba(28,42,40,.16); padding:12px;
}
.ra-menu-title{font-family:'IBM Plex Mono',monospace; font-size:0.68rem; letter-spacing:.08em; color:var(--muted); margin:0 0 8px 2px;}

.ra-hint{
  font-family:'IBM Plex Mono',monospace; font-size:0.72rem; line-height:1.45; color:#8A5414;
  background:#FBF3E6; border:1px solid #EBD3AC; border-radius:6px; padding:7px 9px; margin:0 0 8px;
}

.ra-grid{display:grid; grid-template-columns:1fr 1fr; gap:8px;}
.ra-s{
  display:flex; align-items:center; gap:9px; padding:8px 10px;
  border:1px solid var(--line); border-radius:8px; background:var(--paper);
  font-family:'IBM Plex Mono',monospace; font-size:0.76rem; color:var(--ink); text-decoration:none;
  transition:border-color .15s, background .15s, transform .15s;
}
.ra-s:hover{border-color:var(--teal); background:#EAF2EF; transform:translateY(-1px);}
.ra-ic{
  width:26px; height:26px; flex:0 0 26px; border-radius:50%;
  display:inline-flex; align-items:center; justify-content:center;
  color:#fff; font-family:Arial,Helvetica,sans-serif; font-weight:700; font-size:0.85rem; line-height:1;
}
.ra-wa{background:#25D366;} .ra-fb{background:#1877F2;} .ra-x{background:#111;}
.ra-tg{background:#229ED9;} .ra-em{background:var(--teal);}
.ra-copy{
  display:flex; align-items:center; justify-content:center; gap:8px; width:100%; margin-top:10px;
  padding:9px 10px; border:1px solid var(--teal); border-radius:8px; background:var(--teal); color:#fff;
  font-family:'IBM Plex Mono',monospace; font-size:0.76rem; cursor:pointer;
}
.ra-copy:hover{background:#265C51;}
.ra-menu a:focus-visible,.ra-copy:focus-visible{outline:2px solid var(--amber); outline-offset:2px;}

/* Home: colourful categories + Popular tools */
.cat-block{--cat:var(--amber);}
.cat-block[data-cat="date"]{--cat:#2F6F62;}
.cat-block[data-cat="math"]{--cat:#5456A3;}
.cat-block[data-cat="money"]{--cat:#B5701F;}
.cat-block[data-cat="health"]{--cat:#AE4458;}
.cat-block[data-cat="measure"]{--cat:#2A7391;}
.cat-block h2{color:var(--cat); display:flex; align-items:center; gap:8px;}
.cat-block h2::before{content:""; width:10px; height:10px; border-radius:2px; background:var(--cat); flex-shrink:0;}
.cat-grid a{border-left:3px solid var(--cat, var(--line)); background:color-mix(in srgb, var(--cat, #888) 5%, transparent);}
.cat-grid a:hover{border-color:var(--cat, var(--teal)); background:color-mix(in srgb, var(--cat, #888) 10%, transparent);}

.popular{padding:6px 0 26px;}
.popular > h2{font-family:'IBM Plex Mono',monospace; font-size:0.78rem; color:var(--teal); letter-spacing:0.04em; margin:0 0 14px; font-weight:500;}
.pop-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:12px;}
@media(max-width:820px){.pop-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:520px){.pop-grid{grid-template-columns:1fr;}}
.pop-card{
  --cat:var(--teal);
  display:block; padding:14px 16px 16px; border:1px solid var(--line); border-top:3px solid var(--cat);
  border-radius:4px; text-decoration:none; color:var(--ink);
  background:color-mix(in srgb, var(--cat) 5%, transparent);
}
.pop-card:hover{border-color:var(--cat); background:color-mix(in srgb, var(--cat) 10%, transparent);}
.pop-card .pc-cat{display:block; font-family:'IBM Plex Mono',monospace; font-size:0.68rem; color:var(--cat); letter-spacing:0.04em; margin-bottom:6px;}
.pop-card .pc-title{display:block; font-size:1.02rem; font-weight:600; margin-bottom:4px;}
.pop-card .pc-desc{display:block; font-family:'IBM Plex Mono',monospace; font-size:0.72rem; color:var(--muted);}
.pop-card.c-money{--cat:#B5701F;}
.pop-card.c-health{--cat:#AE4458;}
.pop-card.c-date{--cat:#2F6F62;}
.pop-card.c-math{--cat:#5456A3;}


/* Home sidebar: Popular tools */
.home-layout .home-main{flex:1; min-width:0;}
.home-layout .home-main .cat-block:first-of-type{border-top:none;}
.sidebar-link .pop-dot{display:inline-block; width:8px; height:8px; border-radius:2px; margin-right:9px; vertical-align:middle;}
@media (max-width:760px){
  .home-layout .category-sidebar{display:none;}
}


/* Home: wider layout and sidebar */
main.main-home{max-width:1040px;}
.home-layout{gap:48px;}
.home-layout .category-sidebar{width:290px;}


/* Header, search and footer: brand-teal buttons */
header nav{display:flex; align-items:center; flex-wrap:wrap; gap:6px;}
header nav a{
  margin-left:0; padding:7px 14px; border-radius:999px; font-size:0.78rem;
  color:var(--teal); background:rgba(47,111,98,0.09); border:1px solid transparent;
  transition:background .15s, color .15s, border-color .15s;
}
header nav a:hover{background:var(--teal); color:#fff;}
header nav a:first-child{background:var(--teal); color:#fff;}
header nav a:first-child:hover{background:#245648;}
header nav a[aria-current="page"]{background:#fff; color:var(--teal); border-color:var(--teal); font-weight:600;}
header nav a:first-child[aria-current="page"]{background:var(--teal); color:#fff; border-color:var(--teal);}

.site-search-wrap input{
  padding-left:38px; background-color:#fff; border:1px solid rgba(47,111,98,0.35); border-radius:999px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%232F6F62' stroke-width='2.4' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cline x1='16.5' y1='16.5' x2='21' y2='21'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:13px center;
}
.site-search-wrap input:focus{outline:none; border-color:var(--teal); box-shadow:0 0 0 3px rgba(47,111,98,0.18);}
.search-result-tag{color:var(--teal);}

footer{border-top:3px solid var(--teal);}
footer .flinks{display:flex; flex-wrap:wrap; justify-content:center; gap:8px; margin-top:14px;}
footer .flinks a{
  margin:0; padding:6px 14px; border-radius:999px; color:var(--teal); background:#fff;
  border:1px solid rgba(47,111,98,0.25); transition:background .15s, color .15s;
}
footer .flinks a:hover{background:var(--teal); color:#fff;}


/* Mobile hamburger menu */
.nav-toggle{display:none;}
@media (max-width:760px){
  header .mark{order:1;}
  .nav-toggle{
    display:flex; order:2; margin-left:auto; flex-direction:column; justify-content:center; align-items:center;
    gap:5px; width:44px; height:44px; padding:0; background:#fff;
    border:1px solid rgba(47,111,98,0.35); border-radius:12px; cursor:pointer;
  }
  .nav-toggle:focus-visible{outline:none; box-shadow:0 0 0 3px rgba(47,111,98,0.25);}
  .nav-toggle span{display:block; width:20px; height:2px; background:var(--teal); border-radius:2px; transition:transform .2s, opacity .2s;}
  header.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  header.nav-open .nav-toggle span:nth-child(2){opacity:0;}
  header.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
  header nav{order:3; flex:1 1 100%; display:none; flex-direction:column; align-items:stretch; gap:6px;}
  header.nav-open nav{display:flex;}
  header nav a{padding:12px 16px; border-radius:12px; font-size:0.85rem;}
  header .site-search-wrap{order:4; flex:1 1 100%; max-width:none;}
}


/* Result image preview (Share image) */
.ra-modal{
  position:fixed; inset:0; z-index:100; background:rgba(28,42,40,.55);
  display:flex; align-items:center; justify-content:center; padding:16px;
}
.ra-modal-box{
  background:#fff; border-radius:12px; padding:14px; max-width:520px; width:100%;
  max-height:94vh; overflow:auto; box-shadow:0 18px 48px rgba(28,42,40,.35);
}
.ra-modal-box img{display:block; width:100%; height:auto; border:1px solid var(--line); border-radius:6px;}
.ra-modal-actions{display:flex; flex-wrap:wrap; gap:8px; margin-top:12px;}
.ra-modal-actions .ra-copy{flex:1 1 auto; width:auto; margin-top:0; text-decoration:none; color:#fff;}
.ra-modal-actions .ra-alt{background:transparent; color:var(--teal);}
.ra-modal-actions .ra-alt:hover{background:#EAF2EF;}


/* Step-by-step working */
.working{margin:14px 0 6px; padding:14px 18px 12px; background:#fff; border:1px solid var(--line); border-radius:6px;}
.working[hidden]{display:none;}
.working-title{font-family:'IBM Plex Mono',monospace; font-size:0.72rem; color:var(--amber); letter-spacing:0.04em; margin-bottom:10px;}
.working ol{margin:0; padding:0; list-style:none; counter-reset:w;}
.working li{counter-increment:w; position:relative; padding:0 0 12px 30px;}
.working li::before{
  content:counter(w); position:absolute; left:0; top:1px; width:20px; height:20px; border-radius:50%;
  background:#EAF2EF; color:var(--teal); font-family:'IBM Plex Mono',monospace; font-size:0.7rem;
  display:flex; align-items:center; justify-content:center;
}
.working .w-label{display:block; font-size:0.95rem; color:var(--ink); line-height:1.4;}
.working .w-expr{display:block; font-family:'IBM Plex Mono',monospace; font-size:0.82rem; color:#4A5A57; margin-top:3px; line-height:1.55; overflow-wrap:anywhere;}
.working .w-final{color:var(--teal); font-weight:600;}
.working-note{font-family:'IBM Plex Mono',monospace; font-size:0.68rem; color:var(--muted); border-top:1px solid var(--line); padding-top:8px;}


/* Currency symbol selector */
.cur-row{display:flex; flex-wrap:wrap; align-items:center; gap:8px 10px; margin:14px 0 0;}
.cur-row label{font-family:'IBM Plex Mono',monospace; font-size:0.72rem; color:var(--muted);}
.cur-row select{
  font-family:'IBM Plex Mono',monospace; font-size:0.78rem; color:var(--ink);
  background:#fff; border:1px solid var(--line); border-radius:4px; padding:5px 8px; width:auto; min-width:0;
}
.cur-row select:focus{outline:2px solid var(--teal); outline-offset:1px;}
.cur-note{font-family:'IBM Plex Mono',monospace; font-size:0.68rem; color:var(--muted);}


/* Category pages */
.cat-page{--cat:var(--amber);}
.cat-page[data-cat="money"]{--cat:#B5701F;}
.cat-page[data-cat="health"]{--cat:#AE4458;}
.cat-page .intro{max-width:680px;}
.cat-page .intro p{margin:0 0 12px;}
.cat-kicker{font-family:'IBM Plex Mono',monospace; font-size:0.72rem; letter-spacing:0.04em; color:var(--cat); margin-bottom:8px;}
.cat-page .cat-block{border-top:1px solid var(--line);}
.cat-sec{padding:26px 0; border-top:1px solid var(--line);}
.cat-sec h2{font-size:1.2rem; font-weight:500; margin:0 0 12px;}
.cat-sec p{margin:0; color:var(--muted); max-width:70ch;}
.cat-sec.faq{margin-top:0;}
.cat-desc{display:block; margin-top:4px; color:var(--muted); font-family:'IBM Plex Mono',monospace; font-size:0.72rem;}
.cat-guide{list-style:none; margin:0; padding:0;}
.cat-guide li{padding:11px 0; border-top:1px solid var(--line); font-size:0.95rem;}
.cat-guide li:last-child{border-bottom:1px solid var(--line);}
.cat-guide a{color:var(--teal); font-weight:600; text-decoration:none; white-space:nowrap;}
.cat-guide a:hover{text-decoration:underline;}
.cat-reads{grid-template-columns:1fr;}
.cat-page .health-notice{margin:8px 0 40px;}
.cat-block h2 .see-all{margin-left:auto; font-weight:400; letter-spacing:0; text-decoration:none; color:var(--muted);}
.cat-block h2 .see-all:hover{color:var(--teal);}
.category-sidebar .sidebar-label a{color:inherit; text-decoration:none;}
.category-sidebar .sidebar-label a:hover{text-decoration:underline;}


/* Clickable look: cards, "See all" and guide links */
.cat-grid a{
  position:relative; padding-right:46px;
  border-color:color-mix(in srgb, var(--cat, #888) 35%, var(--line));
  border-left-color:var(--cat, var(--line));
  box-shadow:0 1px 2px rgba(28,42,40,0.10);
  transition:transform .15s, box-shadow .15s, background .15s;
}
.cat-grid a::after{
  content:"\2192"; position:absolute; right:16px; top:50%; transform:translateY(-50%);
  font-size:1.2rem; line-height:1; color:var(--cat, var(--teal)); transition:transform .15s;
}
.cat-grid a:hover{transform:translateY(-1px); box-shadow:0 4px 10px rgba(28,42,40,0.14);}
.cat-grid a:hover::after{transform:translate(4px,-50%);}

.cat-block h2 .see-all{
  margin-left:auto; padding:5px 14px; border:1px solid var(--cat); border-radius:999px;
  color:var(--cat); background:color-mix(in srgb, var(--cat) 8%, transparent);
  font-weight:500; font-size:0.74rem; letter-spacing:0.02em; text-decoration:none;
  transition:background .15s, color .15s;
}
.cat-block h2 .see-all:hover{background:var(--cat); color:#fff;}

.cat-guide li{display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:6px 14px; padding:9px 0;}
.cat-guide a{
  padding:4px 10px; border:1px solid var(--teal); border-radius:999px;
  background:rgba(47,111,98,0.08); font-size:0.70rem; font-weight:500; text-decoration:none;
  transition:background .15s, color .15s;
}
.cat-guide a:hover{background:var(--teal); color:#fff; text-decoration:none;}


/* Category pages: two columns + "other categories" sidebar */
.cat-page[data-cat="date"]{--cat:#2F6F62;}
.cat-page[data-cat="math"]{--cat:#5456A3;}
.cat-page[data-cat="measure"]{--cat:#2A7391;}
.tool-layout .cat-main{flex:1; min-width:0;}
.cat-page .category-sidebar .sidebar-label{background:#EAF2EF; border:1px solid #D3E3DD; border-radius:3px; padding:8px 10px; color:var(--teal); font-weight:600; margin-bottom:10px;}
.sidebar-cat{display:flex; align-items:center; margin:16px 0 2px; padding:8px 10px; border-left:3px solid var(--c, var(--teal)); border-radius:3px; background:color-mix(in srgb, var(--c, var(--teal)) 13%, transparent); color:var(--ink); font-family:'IBM Plex Mono',monospace; font-size:0.78rem; font-weight:600; letter-spacing:0.02em;}
.sidebar-label + .sidebar-cat{margin-top:0;}
.sidebar-cat a{display:flex; align-items:center; flex:1; margin:-12px -10px; padding:8px 10px; color:var(--ink); text-decoration:none;}
.sidebar-cat a:hover{color:var(--teal);}
.sidebar-cat .pop-dot{display:inline-block; width:8px; height:8px; border-radius:2px; margin-right:9px; flex-shrink:0;}
.category-sidebar .sidebar-sub{padding:7px 0 7px 13px; font-size:0.88rem;}
@media (min-width:761px){
  .cat-page.main-wide{max-width:980px;}
  .cat-page .tool-layout{gap:48px;}
  .cat-page .category-sidebar{width:280px;}
}
@media (min-width:761px) and (max-width:1000px){
  .cat-page .category-sidebar{width:240px;}
}

/* Cookie consent banner */
.consent-bar{
  position:fixed; left:16px; right:16px; bottom:16px; z-index:1000;
  max-width:760px; margin:0 auto; padding:14px 16px;
  display:flex; flex-wrap:wrap; align-items:center; gap:12px 16px;
  background:#fff; border:1px solid var(--line); border-radius:8px;
  box-shadow:0 6px 24px rgba(28,42,40,0.18); font-size:0.88rem;
}
.consent-bar p{margin:0; flex:1 1 300px; line-height:1.5; color:var(--ink);}
.consent-bar a{color:var(--teal);}
.consent-btns{display:flex; gap:10px; flex-shrink:0;}
.consent-btn{
  font-family:'IBM Plex Mono',monospace; font-size:0.8rem; font-weight:600;
  padding:8px 20px; border:1px solid var(--teal); border-radius:999px;
  background:rgba(47,111,98,0.08); color:var(--teal); cursor:pointer;
  transition:background .15s, color .15s;
}
.consent-btn:hover{background:var(--teal); color:#fff;}
@media (max-width:520px){ .consent-btns{width:100%;} .consent-btn{flex:1;} }

/* Ad slots (reserved space) */
.ad-slot{margin:28px 0; clear:both;}
.ad-label{font-family:'IBM Plex Mono',monospace; font-size:0.62rem; letter-spacing:0.08em; text-transform:uppercase; color:var(--muted); text-align:center; margin-bottom:6px;}
.ad-box{min-height:250px; display:flex; align-items:center; justify-content:center; overflow:hidden;}
.ad-box > ins{width:100%;}
.ad-side{margin-top:28px;}
.ad-box.ad-preview{border:2px dashed var(--line); border-radius:6px; background:rgba(47,111,98,0.04); color:var(--muted); font-family:'IBM Plex Mono',monospace; font-size:0.74rem;}
@media (max-width:760px){
  .ad-in .ad-box{min-height:280px;}
  .ad-side{display:none;}
}


/* Charts + yearly table (Loan/EMI and Compound Interest) */
main.main-viz{max-width:1200px;}
.viz-grid{display:grid; grid-template-columns:minmax(0,5fr) minmax(0,7fr); gap:32px; align-items:start;}
.viz-right{margin-top:16px; padding:16px 16px 12px; background:#fff; border:1px solid var(--line); border-radius:6px; min-height:420px;}
.viz-title{font-family:'IBM Plex Mono',monospace; font-size:0.72rem; color:var(--amber); letter-spacing:0.04em; margin-bottom:8px;}
.viz-title2{margin-top:14px;}
.viz-legend{display:flex; flex-wrap:wrap; gap:6px 16px; font-size:0.78rem; color:var(--muted); margin-bottom:6px;}
.viz-legend i{display:inline-block; width:10px; height:10px; border-radius:2px; margin-right:6px; vertical-align:-1px;}
.viz-p{fill:var(--teal); background:var(--teal);}
.viz-i{fill:var(--amber); background:var(--amber);}
.viz-d{background:rgba(181,112,31,0.35);}
.viz-svg{display:block; max-width:100%; height:auto;}
.viz-svg text{font-family:'IBM Plex Mono',monospace; font-size:10.5px; fill:var(--muted);}
.viz-grid-line{stroke:var(--line); stroke-width:1;}
.viz-area{fill:rgba(47,111,98,0.16);}
.viz-dep{fill:rgba(181,112,31,0.30);}
.viz-line{fill:none; stroke:var(--teal); stroke-width:2; stroke-linejoin:round;}
.viz-dot{fill:var(--teal);}
.viz-table{max-height:260px; overflow:auto; border:1px solid var(--line); border-radius:4px;}
.viz-table table{width:100%; border-collapse:collapse; font-family:'IBM Plex Mono',monospace; font-size:0.74rem;}
.viz-table th{position:sticky; top:0; background:#EAF2EF; text-align:right; font-weight:600; padding:7px 8px; border-bottom:1px solid var(--line); white-space:nowrap;}
.viz-table td{text-align:right; padding:6px 8px; border-bottom:1px solid var(--line); white-space:nowrap;}
.viz-table th:first-child, .viz-table td:first-child{text-align:left;}
.viz-table tr.viz-total td{font-weight:600; background:#FAF8F3; position:sticky; bottom:0;}
.viz-note{font-size:0.72rem; color:var(--muted); margin-top:8px;}
.viz-empty{display:flex; align-items:center; justify-content:center; text-align:center; min-height:380px; color:var(--muted); font-size:0.88rem; padding:0 20px;}
@media (max-width:1040px){
  .viz-grid{grid-template-columns:minmax(0,1fr); gap:0;}
  .viz-right{min-height:0;}
  .viz-empty{min-height:160px;}
}

/* Layout system: header 1200px, wide pages 1150px, text pages 860px, one sidebar width */
:root{--w-head:1200px; --w-wide:1150px; --w-text:860px; --side:270px;}
main{max-width:var(--w-text);}
main.main-wide, main.main-home, main.main-blog, main.main-viz{max-width:var(--w-wide);}
@media (min-width:761px){
  .cat-page.main-wide{max-width:var(--w-wide);}
  header{padding-left:max(24px, calc((100% - var(--w-head)) / 2 + 24px)); padding-right:max(24px, calc((100% - var(--w-head)) / 2 + 24px));}
  .tool-layout, .home-layout, .blog-layout, .cat-page .tool-layout{gap:48px;}
  .category-sidebar, .home-layout .category-sidebar, .cat-page .category-sidebar{width:var(--side);}
}
@media (min-width:761px) and (max-width:1000px){
  .category-sidebar, .home-layout .category-sidebar, .cat-page .category-sidebar{width:240px;}
}
.explain p, .faq-item .a{max-width:85ch;}


/* Loan and Compound pages: result buttons fit on one line */
.viz-left .result-actions{gap:6px;}
.viz-left .ra-btn{font-size:0.68rem; padding:6px 8px;}