/* CepHesapla – shared stylesheet */
:root{
  --bg:#f6f8fb;--surface:#fff;--ink:#0b1b2b;--ink-2:#3b4b5c;--muted:#5f6f80;--line:#e3e9f0;--line-2:#eef2f6;
  --brand:#0b63f3;--brand-2:#0aa5a5;--brand-ink:#0a4fc2;--brand-soft:#eaf2ff;--teal-soft:#e6f7f6;
  --ok:#0f8a5f;--warn:#b25e00;--warn-soft:#fff5e6;
  --r:14px;--r-lg:20px;
  --sh-1:0 1px 2px rgba(16,24,40,.04),0 1px 3px rgba(16,24,40,.06);
  --sh-2:0 2px 4px rgba(16,24,40,.04),0 12px 32px -8px rgba(16,24,40,.12);
  --font:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg{display:block;max-width:100%}
a{color:var(--brand-ink);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.2;letter-spacing:-.02em;margin:0 0 .5em;font-weight:750}
h1{font-size:clamp(1.75rem,4.2vw,2.6rem)}
h2{font-size:clamp(1.3rem,2.6vw,1.6rem)}
h3{font-size:1.08rem}
p{margin:0 0 1em}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:#fff;padding:8px 12px;z-index:99;border-radius:8px}
:focus-visible{outline:3px solid rgba(11,99,243,.45);outline-offset:2px}

/* Header */
.hdr{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.hdr .wrap{display:flex;align-items:center;gap:20px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);letter-spacing:-.02em;font-size:1.08rem}
.logo:hover{text-decoration:none}
.logo svg{width:32px;height:32px}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{color:var(--ink-2);font-weight:560;font-size:.93rem;padding:8px 12px;border-radius:10px}
.nav a:hover,.nav a[aria-current]{background:var(--brand-soft);color:var(--brand-ink);text-decoration:none}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:10px;width:42px;height:42px;cursor:pointer;color:var(--ink)}
@media(max-width:900px){
  .menu-btn{display:grid;place-items:center}
  .nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;padding:10px 16px 16px;box-shadow:var(--sh-2)}
  .nav.open{display:flex}
  .nav a{padding:12px}
}

/* Hero */
.hero{position:relative;overflow:hidden;background:radial-gradient(1200px 500px at 85% -10%,rgba(10,165,165,.16),transparent 60%),radial-gradient(900px 500px at 0% 0%,rgba(11,99,243,.14),transparent 60%),linear-gradient(180deg,#fff, var(--bg));border-bottom:1px solid var(--line)}
.hero .wrap{padding-top:64px;padding-bottom:56px;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.82rem;font-weight:650;color:var(--brand-ink);background:var(--brand-soft);border:1px solid #d6e5ff;padding:6px 12px;border-radius:999px;margin-bottom:18px}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--brand-2);display:inline-block}
.hero h1{font-size:clamp(2rem,5.4vw,3.4rem);max-width:820px;margin:0 auto 14px;letter-spacing:-.035em}
.hero h1 span{background:linear-gradient(90deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:1.12rem;color:var(--ink-2);max-width:640px;margin:0 auto 28px}
.search{position:relative;max-width:560px;margin:0 auto}
.search svg{position:absolute;left:18px;top:50%;transform:translateY(-50%);width:20px;height:20px;color:var(--muted)}
.search input{width:100%;height:58px;border-radius:16px;border:1px solid var(--line);background:#fff;padding:0 18px 0 50px;font:inherit;font-size:1.05rem;box-shadow:var(--sh-2);color:var(--ink)}
.search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(11,99,243,.14),var(--sh-2)}
.trust{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 22px;margin-top:22px;color:var(--muted);font-size:.9rem}
.trust span{display:inline-flex;align-items:center;gap:6px}
.trust svg{width:16px;height:16px;color:var(--ok)}

/* Tool grid */
.section{padding:48px 0}
.section-hd{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:20px}
.section-hd p{color:var(--muted);margin:0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.card{position:relative;display:flex;flex-direction:column;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-1);color:var(--ink);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#cfdcf0;text-decoration:none}
.card .ic{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand)}
.card:nth-child(even) .ic{background:var(--teal-soft);color:#078585}
.card .ic svg{width:24px;height:24px}
.card h3{margin:4px 0 0}
.card p{color:var(--muted);font-size:.93rem;margin:0}
.card .go{margin-top:auto;padding-top:6px;font-weight:650;font-size:.9rem;color:var(--brand-ink);display:inline-flex;align-items:center;gap:6px}
.card .tag{position:absolute;top:18px;right:18px;font-size:.72rem;font-weight:700;color:#078585;background:var(--teal-soft);padding:3px 8px;border-radius:999px}
.empty{display:none;text-align:center;color:var(--muted);padding:30px}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px}
.feature h3{font-size:1rem;margin-bottom:6px}
.feature p{color:var(--muted);font-size:.92rem;margin:0}

/* Breadcrumb + page head */
.crumbs{font-size:.86rem;color:var(--muted);padding:18px 0 0}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li:before{content:"›";margin-right:6px;color:#9aa8b6}
.crumbs a{color:var(--muted)}
.page-hd{padding:14px 0 22px}
.page-hd p{color:var(--ink-2);max-width:760px;font-size:1.05rem;margin:0}
.updated{display:inline-flex;gap:6px;align-items:center;font-size:.8rem;font-weight:600;color:var(--ok);background:#e9f7f1;padding:4px 10px;border-radius:999px;margin-bottom:12px}

/* Calculator layout */
.calc{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:20px;align-items:start}
@media(max-width:900px){.calc{grid-template-columns:1fr}}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:24px}
.panel h2{font-size:1.1rem;margin-bottom:16px}
.res-panel{position:sticky;top:84px}
@media(max-width:900px){.res-panel{position:static}}
.field{margin-bottom:16px}
.field label,.lbl{display:block;font-weight:620;font-size:.9rem;margin-bottom:6px;color:var(--ink)}
.field .hint{font-size:.8rem;color:var(--muted);margin-top:6px}
.inp{position:relative}
.inp input,.inp select,select.inp-s,input.inp-s{width:100%;height:50px;border:1px solid #d5dee8;border-radius:12px;background:#fff;padding:0 14px;font:inherit;font-size:1.05rem;color:var(--ink);font-variant-numeric:tabular-nums;transition:border-color .15s,box-shadow .15s;appearance:none;-webkit-appearance:none}
.inp select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235f6f80' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}
.inp input:focus,.inp select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(11,99,243,.12)}
.inp .sfx{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:var(--muted);font-weight:600;pointer-events:none}
.inp.has-sfx input{padding-right:44px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:480px){.row2{grid-template-columns:1fr}}
.seg{display:flex;flex-wrap:wrap;gap:4px;background:var(--line-2);border-radius:12px;padding:4px}
.seg button{flex:1;min-width:max-content;border:0;background:transparent;font:inherit;font-weight:620;font-size:.9rem;padding:10px 12px;border-radius:9px;cursor:pointer;color:var(--ink-2)}
.seg button[aria-pressed=true]{background:#fff;color:var(--brand-ink);box-shadow:var(--sh-1)}
.switch{display:flex;align-items:center;gap:12px;cursor:pointer;user-select:none;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:#fbfcfe}
.switch input{position:absolute;opacity:0;width:1px;height:1px}
.switch .tr{flex:none;width:42px;height:24px;border-radius:999px;background:#cfd8e3;position:relative;transition:background .15s}
.switch .tr:after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 2px rgba(0,0,0,.2);transition:transform .15s}
.switch input:checked+.tr{background:var(--brand)}
.switch input:checked+.tr:after{transform:translateX(18px)}
.switch input:focus-visible+.tr{outline:3px solid rgba(11,99,243,.45);outline-offset:2px}
.switch b{font-size:.92rem;font-weight:620;display:block}
.switch small{color:var(--muted);font-size:.8rem}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.chips button{border:1px solid var(--line);background:#fff;border-radius:999px;padding:5px 11px;font:inherit;font-size:.82rem;font-weight:600;color:var(--ink-2);cursor:pointer}
.chips button:hover{border-color:var(--brand);color:var(--brand-ink)}

/* Results */
.hero-res{border-radius:16px;padding:20px;background:linear-gradient(135deg,#0b63f3,#0a8fb8 60%,#0aa5a5);color:#fff;margin-bottom:14px;box-shadow:0 10px 30px -10px rgba(11,99,243,.55)}
.hero-res .k{font-size:.85rem;opacity:.9;font-weight:600}
.hero-res .v{font-size:clamp(1.9rem,5vw,2.5rem);font-weight:800;letter-spacing:-.03em;font-variant-numeric:tabular-nums;line-height:1.15;margin-top:4px;word-break:break-word}
.hero-res .s{font-size:.85rem;opacity:.9;margin-top:6px}
.kv{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.kv>div{background:#f7f9fc;border:1px solid var(--line-2);border-radius:12px;padding:12px 14px}
.kv .k{font-size:.78rem;color:var(--muted);font-weight:600}
.kv .v{font-size:1.08rem;font-weight:720;font-variant-numeric:tabular-nums;margin-top:2px;word-break:break-word}
.kv .full{grid-column:1/-1}
.list{list-style:none;margin:14px 0 0;padding:0;border-top:1px solid var(--line-2)}
.list li{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line-2);font-size:.94rem}
.list li span:first-child{color:var(--ink-2);display:flex;align-items:center;gap:8px}
.list li span:last-child{font-weight:680;font-variant-numeric:tabular-nums;text-align:right}
.dot{width:10px;height:10px;border-radius:3px;display:inline-block;flex:none}
.chart{display:flex;align-items:center;gap:18px;margin-top:16px}
.chart svg{width:132px;height:132px;flex:none}
.legend{font-size:.86rem;display:grid;gap:6px}
.legend div{display:flex;gap:8px;align-items:center}
.bar{height:12px;border-radius:999px;overflow:hidden;display:flex;background:var(--line-2);margin-top:14px}
.bar i{display:block;height:100%}
.note{font-size:.84rem;color:var(--muted);margin-top:14px;line-height:1.5}
.alert{background:var(--warn-soft);border:1px solid #ffe2b8;color:#7a4300;border-radius:12px;padding:12px 14px;font-size:.88rem;margin-top:14px}
.alert.ok{background:#e9f7f1;border-color:#bfe8d6;color:#0b5d40}
.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:#fff;border-radius:10px;padding:9px 14px;font:inherit;font-weight:620;font-size:.88rem;color:var(--ink);cursor:pointer}
.btn:hover{border-color:var(--brand);color:var(--brand-ink)}
.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}

/* Tables */
.tbl-wrap{overflow:auto;border:1px solid var(--line);border-radius:var(--r);background:#fff;max-height:520px}
table{width:100%;border-collapse:collapse;font-size:.88rem;font-variant-numeric:tabular-nums}
th,td{padding:10px 12px;text-align:right;white-space:nowrap;border-bottom:1px solid var(--line-2)}
th:first-child,td:first-child{text-align:left}
thead th{position:sticky;top:0;background:#f3f6fa;font-weight:680;color:var(--ink-2);font-size:.8rem;text-transform:uppercase;letter-spacing:.03em;z-index:1}
tbody tr:hover{background:#f9fbfe}
tfoot td{font-weight:750;background:#f7f9fc}

/* Article */
.content{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;margin-top:28px}
@media(max-width:900px){.content{grid-template-columns:1fr}}
.prose{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px}
.prose h2{margin-top:1.4em}.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:var(--ink-2)}
.prose ul{padding-left:1.2em}
.prose .formula{font-family:var(--mono);background:#f4f7fb;border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:.9rem;overflow:auto;color:var(--ink)}
.faq details{border:1px solid var(--line);border-radius:12px;padding:0 16px;margin-bottom:10px;background:#fff}
.faq summary{cursor:pointer;font-weight:650;padding:14px 0;list-style:none;display:flex;justify-content:space-between;gap:10px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";font-size:1.3rem;line-height:1;color:var(--brand)}
.faq details[open] summary:after{content:"–"}
.faq details p{color:var(--ink-2);margin:0 0 14px}
.side .box{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;margin-bottom:16px}
.side h3{font-size:.95rem;margin-bottom:10px}
.rel{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.rel a{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;color:var(--ink);font-weight:580;font-size:.93rem}
.rel a:hover{background:var(--brand-soft);text-decoration:none}
.rel svg{width:20px;height:20px;color:var(--brand)}
.src{font-size:.82rem;color:var(--muted)}
.src li{margin-bottom:4px}

/* Ad slots: empty containers, collapse when unused */
.ad-slot{display:block;margin:24px auto;min-height:0}
.ad-slot:empty{display:none}

/* Footer */
.ftr{margin-top:56px;background:#0b1b2b;color:#c4cfdb;font-size:.92rem}
.ftr .wrap{padding-top:44px;padding-bottom:28px}
.ftr-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
@media(max-width:760px){.ftr-grid{grid-template-columns:1fr 1fr}.ftr-grid>div:first-child{grid-column:1/-1}}
.ftr h4{color:#fff;font-size:.9rem;margin:0 0 12px}
.ftr ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.ftr a{color:#c4cfdb}.ftr a:hover{color:#fff}
.ftr .logo{color:#fff;margin-bottom:10px}
.ftr .legal{border-top:1px solid rgba(255,255,255,.1);margin-top:30px;padding-top:18px;font-size:.82rem;color:#8a9bb0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px}

/* Legal pages */
.doc{max-width:820px}
.doc h2{font-size:1.2rem;margin-top:1.6em}
.muted{color:var(--muted)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
@media print{.hdr,.ftr,.side,.ad-slot,.actions{display:none}}
.updated svg{width:14px;height:14px}.card .go svg{width:16px;height:16px;transition:transform .15s}.card:hover .go svg{transform:translateX(3px)}