:root{
  --bg:#f6f7fb;
  --surface:#ffffff;
  --ink:#171b2e;
  --muted:#5c6288;
  --line:#e2e5f1;
  --accent:#6366f1;
  --accent-2:#0891b2;
  --accent-ink:#4f46e5;
  --gain:#0ea474;
  --loss:#e11d48;
  --danger:#e11d48;
  --warn:#d97706;
  --display:"Space Grotesk","Segoe UI",system-ui,sans-serif;
  --sans:"Inter","Segoe UI",system-ui,-apple-system,sans-serif;
  --pad:clamp(18px,4vw,44px);
  --radius:18px;
  --shadow:0 18px 44px rgba(49,46,129,.10);
}
[data-theme="dark"]{
  --bg:#101322;
  --surface:#191e33;
  --ink:#eef0fb;
  --muted:#8f95bb;
  --line:#2b3152;
  --accent:#818cf8;
  --accent-2:#22c2e5;
  --accent-ink:#a5b4fc;
  --gain:#34d399;
  --loss:#fb7185;
  --warn:#fbbf24;
  --shadow:0 18px 44px rgba(0,0,0,.5);
}
*{box-sizing:border-box;margin:0}
html{-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-weight:400;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto}
h1,h2,h3,h4{font-family:var(--display);font-weight:600;line-height:1.08;margin:0 0 .4em;letter-spacing:-.01em}
h1{font-size:clamp(2.1rem,5.4vw,3.4rem)}
h2{font-size:1.85rem}
p{margin:0 0 1em}
a{color:var(--accent-ink);font-weight:600}
a:hover{text-decoration:none}
.wrap{max-width:1240px;margin:0 auto;padding:0 var(--pad)}
/* Header */
.site-head{position:sticky;top:0;z-index:50;background:var(--bg);border-bottom:1px solid var(--line)}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;padding-top:13px;padding-bottom:13px}
.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink)}
.brand .logo{width:38px;height:38px;display:block;border-radius:7px}
.brand-name{font-family:var(--display);font-weight:700;font-size:1.5rem;letter-spacing:.01em}
.brand-name em{font-style:normal;color:var(--accent)}
.site-nav ul{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.site-nav a{display:inline-block;padding:9px 15px;border-radius:999px;text-decoration:none;color:var(--ink);font-weight:600;font-size:.93rem}
.site-nav a:hover{background:var(--surface);color:var(--accent-ink)}
.theme-toggle{min-width:44px;min-height:44px;border:1.5px solid var(--line);background:var(--surface);color:var(--ink);border-radius:11px;cursor:pointer;font-size:1.15rem;line-height:1}
/* Hero / tool */
.tool-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:
  radial-gradient(52% 55% at 100% -8%,rgba(99,102,241,.15),transparent 62%),
  radial-gradient(44% 44% at -4% 28%,rgba(8,145,178,.10),transparent 60%)}
.tool-hero:before{content:"";position:absolute;inset:0;background:
  radial-gradient(circle at 30px 30px,rgba(99,102,241,.06) 2px,transparent 3px);background-size:56px 56px;-webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 88%);mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 88%);pointer-events:none}
.tool-hero>.wrap{position:relative;padding-top:36px}
.eyebrow{display:inline-block;font-weight:600;font-size:.76rem;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);margin-bottom:.55em;background:rgba(99,102,241,.10);border:1px solid rgba(99,102,241,.22);padding:5px 12px;border-radius:999px}
.tool-title{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap}
.tool-title h1{margin:0 0 .4em}
.tool-title .lede{color:var(--muted);font-size:1.05rem;max-width:640px;margin:0}
.quick-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.quick-tags span{font-size:.8rem;font-weight:600;color:var(--muted);border:1px solid var(--line);background:var(--surface);padding:5px 11px;border-radius:999px}
/* Calc layout */
.calc-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:20px;align-items:start;padding-top:24px;padding-bottom:48px}
@media(max-width:920px){.calc-grid{grid-template-columns:1fr}}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.panel h2{font-size:1.4rem}
.seg{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-bottom:22px}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg label{display:flex;align-items:center;justify-content:center;min-height:52px;gap:7px;border:1.5px solid var(--line);border-radius:12px;background:var(--surface);cursor:pointer;font-weight:600;font-size:.9rem;transition:.15s;color:var(--ink);padding:0 8px}
.seg input:checked+label{border-color:var(--accent);background:rgba(99,102,241,.10);color:var(--accent-ink);box-shadow:inset 0 0 0 1px var(--accent)}
.seg label:hover{border-color:var(--accent)}
.field-label{display:block;font-weight:600;font-size:.84rem;margin-bottom:8px;color:var(--ink)}
.input-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:520px){.input-grid{grid-template-columns:1fr}}
.full-input{width:100%;padding:15px 16px;border:1.5px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink);font-family:var(--display),monospace;font-size:1.3rem;font-weight:600;line-height:1;transition:.15s}
.full-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(99,102,241,.16)}
.input-affix{position:relative}
.input-affix .af{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--muted);font-weight:600;font-size:.9rem}
.input-affix .full-input{padding-left:40px}
.hint{color:var(--muted);font-size:.82rem;margin:8px 0 0}
.note-box{background:rgba(8,145,178,.07);border-left:3px solid var(--accent-2);padding:11px 14px;border-radius:0 10px 10px 0;color:var(--muted);font-size:.85rem;margin-top:14px}
.row-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.row-actions.split{justify-content:space-between}
.btn{min-height:47px;border:none;border-radius:12px;padding:0 20px;font-family:var(--sans);font-weight:600;font-size:.97rem;cursor:pointer;transition:.15s}
.btn.primary{background:linear-gradient(135deg,var(--accent),#4338ca);color:#fff;box-shadow:0 8px 20px rgba(99,102,241,.3)}
.btn.primary:hover{transform:translateY(-2px)}
.btn.ghost{background:var(--surface);border:1.5px solid var(--line);color:var(--ink)}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent-ink)}
/* Result summary */
.results-title{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px}
.results-title h2{font-size:1.4rem;margin:0}
#badge{font-size:.74rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--accent-ink);background:rgba(99,102,241,.10);border:1px solid rgba(99,102,241,.25);padding:5px 11px;border-radius:999px}
.summary-band{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;background:linear-gradient(135deg,rgba(99,102,241,.12),rgba(99,102,241,.04));border:1px solid rgba(99,102,241,.22);border-radius:14px;padding:18px 20px}
.summary-band .lbl{color:var(--muted);font-weight:600;font-size:.82rem;text-transform:uppercase;letter-spacing:.06em}
.summary-band .val{font-family:var(--display);font-weight:700;font-size:clamp(1.9rem,5vw,2.6rem);line-height:1;word-break:break-all}
.metric-row{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:14px}
@media(max-width:520px){.metric-row{grid-template-columns:1fr}}
.metric{background:var(--bg);border:1px solid var(--line);border-radius:13px;padding:15px}
.metric .m-lbl{color:var(--muted);font-size:.82rem;font-weight:600;margin-bottom:4px}
.metric .m-val{font-family:var(--display);font-weight:700;font-size:1.5rem;line-height:1}
.metric .m-val.neg{color:var(--loss)}
.metric .m-val.good{color:var(--gain)}
.metric .m-val .unit,.summary-band .val .unit{font-family:var(--sans);font-size:.85rem;color:var(--muted);font-weight:600}
.pill{display:inline-block;font-size:.74rem;font-weight:700;padding:3px 10px;border-radius:999px;margin-left:6px}
.pill.ot{background:rgba(99,102,241,.12);color:var(--accent-ink)}
.pill.def{background:rgba(217,119,6,.14);color:var(--warn)}
.pill.ok{background:rgba(14,164,116,.14);color:var(--gain)}
.placeholder{color:var(--muted);font-size:.95rem;max-width:300px}
#result-holder{min-height:170px}
/* Table (multi-day) */
.days-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.days-head b{font-family:var(--display);font-size:1rem}
.times-table{width:100%;border-collapse:collapse;font-size:.9rem}
.times-table th,.times-table td{text-align:left;padding:9px 8px;border-bottom:1px solid var(--line)}
.times-table th{color:var(--muted);font-size:.76rem;text-transform:uppercase;letter-spacing:.05em;font-weight:700}
.times-table td input{width:100%;padding:8px 9px;border:1.5px solid var(--line);border-radius:9px;background:var(--surface);color:var(--ink);font-family:var(--display),monospace;font-weight:600;font-size:.95rem}
.times-table td input:focus{outline:none;border-color:var(--accent)}
.del-btn{min-width:38px;min-height:38px;border:1.5px solid var(--line);background:var(--surface);color:var(--danger);border-radius:9px;cursor:pointer;font-weight:700}
.del-btn:hover{border-color:var(--danger);background:rgba(225,29,72,.06)}
/* Steps / breakdown */
.steps-wrap{max-width:820px}
.steps{margin-top:8px;border:1px solid var(--line);border-radius:16px;background:var(--surface);padding:6px 24px 22px;box-shadow:var(--shadow)}
.steps-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:20px 0 8px;flex-wrap:wrap}
.steps-head b{font-family:var(--display);font-size:1.05rem}
.steps-head span{color:var(--muted);font-size:.82rem;font-weight:600}
.steps-inline{color:var(--muted);font-size:.95rem}
.formula{background:var(--bg);border:1px solid var(--line);border-radius:11px;padding:13px 16px;font-size:.98rem;color:var(--ink);overflow-x:auto}
.formula strong{color:var(--accent-ink)}
.formula .ot{color:var(--accent-ink)}
.formula .def{color:var(--warn)}
.break-row{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.95rem;padding:4px 0}
.break-row .b-lbl{color:var(--muted)}
.break-row .b-val{font-weight:700;font-family:var(--display)}
.break-row.hr{border-top:1px dashed var(--line);margin-top:6px;padding-top:12px}
.steps-note{color:var(--muted);font-size:.85rem;background:rgba(8,145,178,.07);border-left:3px solid var(--accent-2);padding:10px 14px;border-radius:0 9px 9px 0;margin-top:10px}
/* Page / content */
.page{padding:46px 0 20px}
.page .wrap{max-width:800px}
.page-lede{color:var(--muted)}
.content-section{padding:32px 0 48px}
.content-section .inner{max-width:1240px;margin:0 auto;padding:0 var(--pad)}
.article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:26px}
@media(max-width:760px){.article-list{grid-template-columns:1fr}}
.article-list a{display:block;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px;text-decoration:none;color:var(--ink);transition:.18s;box-shadow:var(--shadow)}
.article-list a:hover{border-color:var(--accent);transform:translateY(-3px)}
.article-title{font-family:var(--display);font-weight:600;font-size:1.3rem;line-height:1.2;margin-bottom:.4em}
.article-desc{color:var(--muted);font-size:.94rem}
.article-body h2{margin-top:1.5em}
.article-body ul,.article-body ol{padding-left:0;list-style:none;margin:0 0 1em}
.article-body li{margin-bottom:.6em;padding-left:22px;position:relative}
.article-body ul li:before{content:"\25B6";position:absolute;left:0;top:0;font-size:.72em;color:var(--accent)}
.article-body ol{counter-reset:li}
.article-body ol li{counter-increment:li}
.article-body ol li:before{content:counter(li) ".";position:absolute;left:0;color:var(--accent);font-family:var(--display);font-weight:600}
.article-body code{background:var(--bg);border:1px solid var(--line);padding:1px 6px;border-radius:6px;font-size:.9em}
.quote{border-left:4px solid var(--accent);background:var(--surface);border-radius:0 12px 12px 0;padding:16px 20px;margin:1.4em 0;color:var(--muted)}
/* Footer */
.site-foot{border-top:1px solid var(--line);background:var(--surface)}
.foot-grid{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding-top:34px;padding-bottom:26px;flex-wrap:wrap}
.foot-brand{font-family:var(--display);font-weight:600;font-size:1.25rem;margin:0}
.site-foot nav ul{display:flex;gap:6px;list-style:none;margin:0;padding:0;flex-wrap:wrap}
.site-foot nav a{display:inline-block;padding:7px 11px;border-radius:999px;color:var(--muted);text-decoration:none;font-size:.9rem}
.site-foot nav a:hover{background:var(--bg);color:var(--accent-ink)}
.foot-legal{border-top:1px dashed var(--line);padding:16px var(--pad);color:var(--muted);font-size:.82rem;text-align:center}
/* Cookie banner */
.cookie-banner{position:fixed;left:16px;right:16px;bottom:16px;z-index:100;display:none;align-items:center;gap:14px;justify-content:space-between;flex-wrap:wrap;background:var(--ink);color:#fff;border-radius:14px;padding:14px 18px;box-shadow:var(--shadow);max-width:660px;margin:0 auto}
[data-theme="dark"] .cookie-banner{background:#0b0e1c}
.cookie-banner p{margin:0;font-size:.9rem;flex:1;min-width:220px;color:#eef0fb}
.cookie-banner button{border:none;border-radius:10px;padding:9px 16px;font-family:var(--sans);font-weight:600;font-size:.9rem;cursor:pointer;min-height:40px}
#cookie-accept{background:var(--accent);color:#fff}
/* Responsive menu */
.menu-btn{display:none}
@media(max-width:640px){
  header:has(.menu-btn) .site-nav{position:relative}
  header:has(.menu-btn) .menu-btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 16px;border:1.5px solid var(--line);background:var(--surface);border-radius:10px;font-family:var(--sans);font-weight:600;font-size:.9rem;cursor:pointer;color:var(--ink)}
  header:has(.menu-btn) #nav-menu{display:none;position:absolute;right:0;top:calc(100% + 8px);background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);min-width:200px;z-index:60;padding:8px}
  header:has(.menu-btn) #nav-menu.open{display:block}
  header:has(.menu-btn) .site-nav ul{flex-direction:column;gap:0}
  header:has(.menu-btn) .site-nav a{display:block;border-radius:10px}
}
@media(max-width:375px){body{font-size:.95rem}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}

/* ===== CMS-generated article & archive pages ===== */
.site-header{position:sticky;top:0;z-index:50;background:var(--bg);border-bottom:1px solid var(--line)}
.site-header .inner{max-width:1240px;margin:0 auto;padding:13px var(--pad);display:flex;align-items:center;justify-content:space-between;gap:14px}
.site-header .logo{display:inline-flex;align-items:center;gap:11px;font-family:var(--display);font-weight:700;font-size:1.5rem;color:var(--ink);text-decoration:none}
.site-header .logo-img{width:38px;height:38px;border-radius:7px}
.nav-links{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.nav-links a{display:inline-block;padding:9px 15px;border-radius:999px;text-decoration:none;color:var(--ink);font-weight:600;font-size:.93rem}
.nav-links a:hover{background:var(--surface);color:var(--accent-ink)}
@media(max-width:640px){.site-header .inner{flex-wrap:wrap}.nav-links{order:3;width:100%;justify-content:flex-start;flex-wrap:wrap}}
.article-content{padding:40px 0 30px}
.article-content .inner{max-width:800px;margin:0 auto;padding:0 var(--pad)}
.article-back{display:inline-block;font-size:.85rem;font-weight:600;color:var(--accent-ink);text-decoration:none;margin-bottom:18px}
.article-back:hover{text-decoration:underline}
.article-content article h1{font-size:clamp(1.8rem,4.5vw,2.6rem)}
.article-meta{display:flex;gap:12px;color:var(--muted);font-size:.85rem;margin:0 0 1.4em;flex-wrap:wrap}
.article-content article p{color:var(--ink);margin:0 0 1em}
.article-content article h2{margin-top:1.5em;font-size:1.5rem}
.article-content article ul,.article-content article ol{padding-left:0;list-style:none;margin:0 0 1em}
.article-content article li{margin-bottom:.6em;padding-left:22px;position:relative}
.article-content article ul li:before{content:"\25B6";position:absolute;left:0;top:0;font-size:.72em;color:var(--accent)}
.article-content article ol li{counter-increment:li;list-style:decimal}
.article-content article ol li::marker{color:var(--accent);font-family:var(--display);font-weight:600}
.article-content article blockquote,.article-content article .quote{border-left:4px solid var(--accent);background:var(--surface);border-radius:0 12px 12px 0;padding:16px 20px;margin:1.4em 0;color:var(--muted)}
.article-content article code{background:var(--bg);border:1px solid var(--line);padding:1px 6px;border-radius:6px;font-size:.9em}
.article-content table{border-collapse:collapse;width:100%;margin:1em 0}
.article-content th,.article-content td{border:1px solid var(--line);padding:8px 12px;font-size:.92rem}
.article-content th{background:var(--bg)}
.faq-section h2{font-size:1.5rem;margin-bottom:.6em}
.faq-section .faq{border:1px solid var(--line);border-radius:16px;background:var(--surface);padding:6px 20px 20px;box-shadow:var(--shadow);margin-top:8px}
.faq-section details{padding:14px 0;border-bottom:1px dashed var(--line)}
.faq-section details:last-child{border-bottom:none}
.faq-section summary{cursor:pointer;font-weight:600;font-family:var(--display);font-size:1.05rem;color:var(--ink)}
.faq-section details p{color:var(--muted);margin:10px 0 0;font-size:.95rem}
/* Footer (CMS style) */
.site-footer{border-top:1px solid var(--line);background:var(--surface)}
.site-footer .inner{max-width:1240px;margin:0 auto;padding:30px var(--pad) 24px}
.footer-links{display:flex;gap:6px;flex-wrap:wrap}
.footer-links a{display:inline-block;padding:7px 11px;border-radius:999px;color:var(--muted);text-decoration:none;font-size:.9rem;font-weight:500}
.footer-links a:hover{background:var(--bg);color:var(--accent-ink)}
.copyright{border-top:1px dashed var(--line);margin-top:20px;padding-top:16px;color:var(--muted);font-size:.82rem;text-align:center}