/* ---- base (shared) ---- */
[hidden]{display:none!important}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;color-scheme:light dark}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--fg);line-height:1.6;font-size:1.0625rem;min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
img,svg{max-width:100%}
a{color:var(--link)}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
h1,h2,h3{font-family:var(--font-head);line-height:1.2;letter-spacing:var(--head-ls,-.01em)}
h1{font-size:clamp(1.7rem,4.5vw,2.6rem);margin:.2em 0 .3em}
h2{font-size:clamp(1.3rem,3vw,1.7rem);margin:1.6em 0 .5em}
h3{font-size:1.15rem;margin:1.3em 0 .4em}
code{font-size:.92em}
.wrap{width:100%;max-width:var(--maxw,1040px);margin:0 auto;padding:0 1rem}
.skip{position:absolute;left:-999px;top:0;background:var(--accent);color:var(--accent-fg);padding:.6rem 1rem;z-index:10}
.skip:focus{left:.5rem;top:.5rem}
.site-header{background:var(--hdr-bg,var(--card));border-bottom:1px solid var(--border);position:sticky;top:0;z-index:5}
.hdr{display:flex;align-items:center;gap:.75rem;min-height:3.6rem;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:.5rem;text-decoration:none;color:var(--hdr-fg,var(--fg));font-family:var(--font-head);font-weight:800;font-size:1.2rem;margin-right:auto}
.brand img{width:32px;height:32px}
.nav-toggle,.theme-toggle{font:inherit;background:transparent;color:var(--hdr-fg,var(--fg));border:1px solid var(--border);border-radius:var(--radius-sm);padding:.35rem .7rem;cursor:pointer;min-height:2.4rem}
.theme-toggle{font-size:1.1rem;width:2.6rem}
.site-nav{flex-basis:100%;display:none;order:3}
.site-nav.open{display:block}
.site-nav ul{list-style:none;margin:0 0 .6rem;padding:0;display:flex;flex-direction:column;gap:.15rem}
.site-nav a{display:block;padding:.5rem .7rem;border-radius:var(--radius-sm);text-decoration:none;color:var(--hdr-fg,var(--fg));font-weight:600;font-size:.95rem}
.site-nav a:hover{background:var(--hover)}
.site-nav a[aria-current=page]{background:var(--accent);color:var(--accent-fg)}
@media (min-width:900px){
  .nav-toggle{display:none}
  .hdr{padding-top:.4rem}
  .site-nav{display:block;flex-basis:100%;order:3}
  .site-nav ul{flex-direction:row;flex-wrap:nowrap;overflow-x:auto;margin:0 -.6rem;padding-bottom:.45rem;scrollbar-width:thin}
  .site-nav a{padding:.35rem .6rem;white-space:nowrap;font-size:.9rem}
  .site-header{position:static}
}
.hero{padding:1.6rem 0 .6rem}
.lead{font-size:1.12rem;color:var(--muted);max-width:52rem;margin:.2rem 0 0}
.tool{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:clamp(1rem,3vw,1.75rem);box-shadow:var(--shadow);margin:1rem 0}
.content,.faq,.related{max-width:52rem}
.content{margin-top:1.5rem}
.content ul,.content ol{padding-left:1.3rem}
.content li{margin:.25rem 0}
.content table{border-collapse:collapse;width:100%;margin:1rem 0;font-size:.95rem}
.content th,.content td{border:1px solid var(--border);padding:.45rem .6rem;text-align:left}
.content th{background:var(--hover)}
.faq details{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--card);margin:.5rem 0}
.faq summary{cursor:pointer;padding:.85rem 1rem;font-weight:700;list-style-position:outside}
.faq .ans{padding:0 1rem .5rem}
.faq .ans p{margin:.2rem 0 .8rem}
.related{margin-bottom:1rem}
.cards{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:.75rem}
.cards a{display:flex;flex-direction:column;gap:.25rem;height:100%;padding:1rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--card);text-decoration:none;color:var(--fg);transition:transform .15s,border-color .15s}
.cards a:hover{transform:translateY(-2px);border-color:var(--accent)}
.cards span{color:var(--muted);font-size:.92rem}
.ad-slot{display:flex;align-items:center;justify-content:center;min-height:90px;margin:1rem 0;border:1px dashed var(--border);border-radius:var(--radius-sm);color:var(--muted);font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;opacity:.7}
.ad-slot:empty::before{content:""}
.site-footer{margin-top:3rem;border-top:1px solid var(--border);background:var(--card);font-size:.92rem;color:var(--muted)}
.foot{display:grid;gap:1rem;padding:1.6rem 1rem}
@media (min-width:700px){.foot{grid-template-columns:2fr 2fr 1fr}}
.foot ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:.3rem 1rem}
.foot a{color:var(--muted)}
.foot-brand{font-weight:800;color:var(--fg);font-family:var(--font-head);margin:0 0 .3rem}
.copy{grid-column:1/-1;margin:0}
.btn,button.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;font:inherit;font-weight:700;background:var(--accent);color:var(--accent-fg);border:0;border-radius:var(--radius-sm);padding:.7rem 1.2rem;cursor:pointer;text-decoration:none;min-height:2.75rem}
.btn:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent;color:var(--fg);border:1px solid var(--border)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.row{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center}
label{font-weight:600}
input,select,textarea{font:inherit;color:var(--fg);background:var(--input-bg,var(--bg));border:1px solid var(--border);border-radius:var(--radius-sm);padding:.6rem .7rem;max-width:100%}
input:focus,select:focus,textarea:focus{border-color:var(--accent)}
.field{display:flex;flex-direction:column;gap:.3rem;margin-bottom:.8rem}
.grid2{display:grid;gap:.8rem}
@media (min-width:640px){.grid2{grid-template-columns:1fr 1fr}}
.muted{color:var(--muted)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.nf{text-align:center;padding:4rem 0}
.nf-code{font-size:5rem;font-weight:900;margin:0;color:var(--accent);font-family:var(--font-head)}
.toast{position:fixed;left:50%;bottom:1.2rem;transform:translateX(-50%);background:var(--fg);color:var(--bg);padding:.6rem 1rem;border-radius:var(--radius-sm);font-weight:600;z-index:20;opacity:0;transition:opacity .2s;pointer-events:none}
.toast.show{opacity:1}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* HitungCepat calculator styles */
.calc-form{display:grid;gap:1rem}
.calc-grid{display:grid;gap:.9rem 1rem;grid-template-columns:1fr}
@media(min-width:620px){.calc-grid{grid-template-columns:1fr 1fr}}
.fld{display:flex;flex-direction:column;gap:.35rem;min-width:0}
.fld label,.fld .lbl{font-weight:600;font-size:.93rem}
.fld .hint{font-size:.82rem;color:var(--muted)}
.inp{display:flex;align-items:stretch;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--input-bg,var(--bg));overflow:hidden}
.inp:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 22%,transparent)}
.inp input,.inp select{border:0;border-radius:0;flex:1;min-width:0;background:transparent;font-variant-numeric:tabular-nums}
.inp input:focus,.inp select:focus{outline:none}
.inp .pre,.inp .suf{display:flex;align-items:center;padding:0 .7rem;color:var(--muted);font-size:.9rem;background:var(--hover);white-space:nowrap}
.chk{display:flex;align-items:center;gap:.5rem;font-weight:600}
.chk input{width:1.15rem;height:1.15rem;accent-color:var(--accent)}
.seg{display:flex;flex-wrap:wrap;gap:.4rem}
.calc-actions{display:flex;flex-wrap:wrap;gap:.6rem}
.calc-out{margin-top:1.2rem;border-radius:var(--radius-sm);background:var(--lcd-bg);color:var(--lcd-fg);padding:1rem 1.1rem;font-variant-numeric:tabular-nums}
.calc-out[hidden]{display:none}
.calc-row{display:flex;justify-content:space-between;gap:1rem;padding:.45rem 0;border-bottom:1px dashed color-mix(in srgb,var(--lcd-fg) 22%,transparent);flex-wrap:wrap}
.calc-row:last-of-type{border-bottom:0}
.calc-row span{color:color-mix(in srgb,var(--lcd-fg) 75%,transparent)}
.calc-row strong{font-family:var(--font-num);text-align:right}
.calc-row.big strong{font-size:clamp(1.4rem,5vw,2rem);color:var(--lcd-hi)}
.calc-row.big{align-items:baseline}
.calc-note{margin:.8rem 0 0;font-size:.9rem;padding:.6rem .8rem;border-radius:8px;background:color-mix(in srgb,var(--lcd-fg) 8%,transparent)}
.calc-note.ok{border-left:4px solid var(--lcd-hi)}
.calc-err{margin:0;color:var(--lcd-err);font-weight:600}
.calc-det{margin-top:.8rem}
.calc-det summary{cursor:pointer;font-weight:600}
.calc-table{font-size:.88rem;color:inherit}
.calc-table caption{text-align:left;font-weight:600;padding:.4rem 0}
.calc-table th,.calc-table td{padding:.4rem .5rem;border-bottom:1px solid color-mix(in srgb,var(--lcd-fg) 18%,transparent);text-align:right}
.calc-table th:first-child,.calc-table td:first-child{text-align:left}
.tbl-wrap{overflow-x:auto}
.calc-det .calc-table{display:block;overflow-x:auto;white-space:nowrap}
.bmi-bar{position:relative;height:12px;border-radius:99px;margin:1rem 0 .3rem;background:linear-gradient(90deg,#60a5fa 0 23.2%,#22c55e 23.2% 46.4%,#f59e0b 46.4% 64.3%,#ef4444 64.3%)}
.bmi-bar span{position:absolute;top:-5px;width:4px;height:22px;margin-left:-2px;background:var(--lcd-fg);border-radius:2px}
.bmi-scale{position:relative;height:1rem;font-size:.75rem;font-style:normal}
.bmi-scale i{position:absolute;font-style:normal;transform:translateX(-50%)}
.bmi-scale i:nth-child(1){left:0;transform:none}.bmi-scale i:nth-child(2){left:23.2%}.bmi-scale i:nth-child(3){left:46.4%}.bmi-scale i:nth-child(4){left:64.3%}.bmi-scale i:nth-child(5){left:100%;transform:translateX(-100%)}
.bmi-u{color:#60a5fa}.bmi-n{color:#4ade80}.bmi-o{color:#fbbf24}.bmi-x{color:#f87171}
/* percent cards */
.pct-list{display:grid;gap:.9rem}
.pct-card{border:1px solid var(--border);border-radius:var(--radius-sm);padding:.9rem 1rem;background:var(--card)}
.pct-card h3{margin:0 0 .6rem;font-size:1rem}
.pct-line{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem}
.pct-line input{width:8.5rem;font-variant-numeric:tabular-nums}
.pct-res{display:block;margin-top:.6rem;font-family:var(--font-num);font-size:1.25rem;font-weight:700;color:var(--accent)}
/* units */
.u-row{display:grid;gap:.8rem;grid-template-columns:1fr}
@media(min-width:620px){.u-row{grid-template-columns:1fr auto 1fr;align-items:end}}
#u-swap{min-width:2.75rem}
.u-res{display:block;font-family:var(--font-num);font-size:1.15rem;font-weight:700}
.u-all{list-style:none;margin:.8rem 0 0;padding:0;display:grid;gap:.2rem}
.u-all li{display:flex;justify-content:space-between;gap:1rem;padding:.3rem 0;border-bottom:1px dashed color-mix(in srgb,var(--lcd-fg) 20%,transparent);flex-wrap:wrap}
/* basic calculator */
.cb{max-width:26rem;margin:0 auto}
.cb-screen{background:var(--lcd-bg);color:var(--lcd-fg);border-radius:var(--radius-sm);padding:1rem;text-align:right;min-height:5.6rem;display:flex;flex-direction:column;justify-content:flex-end;overflow:hidden}
.cb-expr{font-family:var(--font-num);font-size:clamp(1.5rem,7vw,2.2rem);word-break:break-all;line-height:1.2}
.cb-res{font-family:var(--font-num);color:var(--lcd-hi);min-height:1.4em;font-size:1.05rem}
.cb-keys{display:grid;grid-template-columns:repeat(4,1fr);gap:.5rem;margin-top:.8rem}
.cb-keys button{font:inherit;font-size:1.25rem;font-weight:600;min-height:3.4rem;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--card);color:var(--fg);cursor:pointer;font-family:var(--font-num)}
.cb-keys button:hover{background:var(--hover)}
.cb-keys button.op{background:var(--hover);color:var(--accent)}
.cb-keys button.eq{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}
.cb-keys button.fn{color:var(--muted)}
.cb-hist{margin-top:1rem}
.cb-hist ol{list-style:none;padding:0;margin:.4rem 0;display:grid;gap:.25rem}
.cb-hist ol button{all:unset;cursor:pointer;display:block;width:100%;box-sizing:border-box;text-align:right;padding:.3rem .5rem;border-radius:6px;font-family:var(--font-num);color:var(--muted)}
.cb-hist ol button:hover,.cb-hist ol button:focus-visible{background:var(--hover);color:var(--fg);outline:2px solid var(--accent)}
.cb-hist .row{display:flex;justify-content:space-between;align-items:center}
.cb-hist h2{font-size:.95rem;margin:0}
.linkbtn{background:none;border:0;color:var(--link);cursor:pointer;font:inherit;font-size:.85rem;text-decoration:underline}

:root{--font:"Segoe UI",Roboto,"Noto Sans",Arial,sans-serif;--font-head:"Segoe UI",Roboto,"Noto Sans",Arial,sans-serif;--font-num:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Roboto Mono",monospace;--radius:12px;--radius-sm:8px;--maxw:1040px;--bg:#f3f7f6;--fg:#0f1f1c;--muted:#4d625d;--card:#ffffff;--accent:#0f766e;--accent-fg:#ffffff;--border:#d3e2de;--link:#0f766e;--hover:#e3f1ee;--shadow:0 2px 0 #d3e2de;--hdr-bg:#0f766e;--hdr-fg:#ffffff;--input-bg:#ffffff;--lcd-bg:#10241f;--lcd-fg:#d9f2ea;--lcd-hi:#5eead4;--lcd-err:#fca5a5}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#08110f;--fg:#e2efec;--muted:#93aaa4;--card:#0f1c19;--accent:#2dd4bf;--accent-fg:#04201c;--border:#1f3430;--link:#5eead4;--hover:#142824;--shadow:0 2px 0 #000;--hdr-bg:#0b1a17;--hdr-fg:#e2efec;--input-bg:#0b1714;--lcd-bg:#020807;--lcd-fg:#c7ede3;--lcd-hi:#5eead4;--lcd-err:#fca5a5}}
:root[data-theme=dark]{--bg:#08110f;--fg:#e2efec;--muted:#93aaa4;--card:#0f1c19;--accent:#2dd4bf;--accent-fg:#04201c;--border:#1f3430;--link:#5eead4;--hover:#142824;--shadow:0 2px 0 #000;--hdr-bg:#0b1a17;--hdr-fg:#e2efec;--input-bg:#0b1714;--lcd-bg:#020807;--lcd-fg:#c7ede3;--lcd-hi:#5eead4;--lcd-err:#fca5a5}

.site-header{border:0}
.site-header .theme-toggle,.site-header .nav-toggle{border-color:rgba(255,255,255,.4);color:inherit}
.site-nav a:hover{background:rgba(255,255,255,.14)}
.site-nav a[aria-current=page]{background:#fff;color:#0f766e}
html.dark .site-nav a[aria-current=page],[data-theme=dark] .site-nav a[aria-current=page]{background:#2dd4bf;color:#04201c}
.hero{padding-top:1.2rem;border-left:6px solid var(--accent);padding-left:1rem;margin-top:1.2rem}
.hero h1{font-size:clamp(1.6rem,4.2vw,2.3rem);letter-spacing:-.02em;font-weight:800}
.tool{border:1px solid var(--border);box-shadow:0 2px 0 var(--border),0 14px 30px -18px rgba(15,118,110,.35)}
.cards li a{border-left:4px solid var(--accent)}
.content table{font-variant-numeric:tabular-nums}
.content th{background:var(--hover)}