@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');
/* ===== Skin: CAESIUM — atomicclock.now. Laboratory instrument: deep navy panel,
   cyan readout, precision hairlines, calibration ticks, measured typography. ===== */
:root{--c:#25d0e8}
body.skin-caesium{--c:#25d0e8;--c-d:#12a9c0;--c-l:#0d2a33;--violet:#8b7bff;--warn:#ffb547;
  --ink:#dce6ee;--mut:#8b9aab;--faint:#5d6c7d;--line:#152131;--line2:#22344a;--bg:#070d15;--card:#0c1522;
  --shadow:0 0 0 1px rgba(37,208,232,.06);
  margin:0;font-family:'IBM Plex Sans',-apple-system,BlinkMacSystemFont,sans-serif;color:var(--ink);background:var(--bg);
  font-size:15px;line-height:1.64;-webkit-font-smoothing:antialiased}
body.skin-caesium *{box-sizing:border-box}
body.skin-caesium h1,body.skin-caesium h2,body.skin-caesium h3,body.skin-caesium h4{font-weight:600;line-height:1.22;
  letter-spacing:-.012em;color:#eef5fa}
body.skin-caesium a{color:var(--c);text-decoration:none}
body.skin-caesium a:hover{color:#7ae7f7;text-decoration:underline}

/* ---- Chrome: a calibration strip under the bar ---- */
body.skin-caesium .g-header{background:#050a11;border-bottom:1px solid var(--line2);position:sticky;top:0;z-index:20}
body.skin-caesium .g-header::after{content:"";display:block;height:6px;
  background:repeating-linear-gradient(90deg,var(--line2) 0 1px,transparent 1px 12px);opacity:.9}
body.skin-caesium .g-bar{max-width:1120px;margin:0 auto;display:flex;align-items:center;gap:16px;padding:13px 24px;flex-wrap:wrap}
body.skin-caesium .g-brand{color:#eef5fa;font-weight:600;font-size:17px;display:flex;align-items:center;gap:10px;letter-spacing:-.015em}
body.skin-caesium .g-brand b{color:var(--c)}
body.skin-caesium .g-brand::before{content:"";width:20px;height:20px;border-radius:50%;border:1px solid var(--c);
  background:radial-gradient(circle at 50% 50%,var(--c) 2px,transparent 2px),
             repeating-conic-gradient(from 0deg,var(--c) 0 2deg,transparent 2deg 30deg);opacity:.9}
body.skin-caesium .g-nav{display:flex;gap:2px;flex-wrap:wrap;margin-left:auto}
body.skin-caesium .g-nav a{color:var(--mut);font-family:'IBM Plex Mono',monospace;font-size:12.5px;font-weight:500;
  padding:7px 12px;border-radius:2px;letter-spacing:.02em}
body.skin-caesium .g-nav a:hover{background:var(--line);color:#eef5fa;text-decoration:none}
body.skin-caesium .g-nav a.is-main{color:var(--c);background:var(--c-l)}
body.skin-caesium .g-cta{background:var(--c);color:#04222a;padding:8px 17px;border-radius:2px;font-weight:600;font-size:13.5px}
body.skin-caesium .g-cta:hover{background:#7ae7f7;text-decoration:none}
body.skin-caesium .g-main{max-width:1120px;margin:0 auto;padding:30px 24px 64px}

/* ---- Hero: instrument panel ---- */
body.skin-caesium .hero{display:grid;grid-template-columns:.85fr 1.15fr;gap:34px;align-items:center;background:var(--card);
  border:1px solid var(--line2);border-radius:4px;padding:36px;margin-bottom:32px;position:relative;
  background-image:linear-gradient(rgba(37,208,232,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(37,208,232,.028) 1px,transparent 1px);
  background-size:26px 26px}
body.skin-caesium .hero-h1{font-size:38px;margin:0 0 12px}
body.skin-caesium .hero-lead{font-size:16.5px;color:var(--mut);margin:0 0 18px}
body.skin-caesium .hero-badges{list-style:none;display:flex;flex-wrap:wrap;gap:7px;padding:0;margin:0}
body.skin-caesium .hero-badges li{background:var(--c-l);color:var(--c);font-family:'IBM Plex Mono',monospace;font-size:11.5px;
  font-weight:500;padding:4px 11px;border-radius:2px;border:1px solid rgba(37,208,232,.22)}
body.skin-caesium .hero-steps{margin:18px 0 0;padding-left:20px;color:var(--mut);font-size:14px}
body.skin-caesium .hero-widget{display:flex;justify-content:center;align-items:center;padding:26px;background:#040910;
  border:1px solid var(--line2);border-radius:3px;box-shadow:inset 0 0 60px rgba(37,208,232,.06)}
body.skin-caesium .wc-stage{border-radius:2px;background:transparent;border-color:var(--line2)}

/* ---- Sections & cards ---- */
body.skin-caesium .section-h{font-size:23px;margin:0 0 16px;padding-bottom:9px;border-bottom:1px solid var(--line2);position:relative}
body.skin-caesium .section-h::after{content:"";position:absolute;left:0;bottom:-1px;width:52px;height:1px;background:var(--c);box-shadow:0 0 8px var(--c)}
body.skin-caesium .toolgrid-wrap,body.skin-caesium .content-body,body.skin-caesium .articles-strip,
body.skin-caesium .other-tools,body.skin-caesium .faq{margin:44px 0}
body.skin-caesium .toolgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(232px,1fr));gap:12px}
body.skin-caesium .tool-card{display:flex;flex-direction:column;gap:5px;background:var(--card);border:1px solid var(--line2);
  border-radius:3px;padding:19px;transition:.15s}
body.skin-caesium .tool-card:hover{text-decoration:none;border-color:var(--c);box-shadow:0 0 0 1px rgba(37,208,232,.25)}
body.skin-caesium .tool-card-label{font-weight:600;font-size:16px;color:#eef5fa}
body.skin-caesium .tool-card-short{font-family:'IBM Plex Mono',monospace;font-size:10.5px;color:var(--c);letter-spacing:.08em;text-transform:uppercase}
body.skin-caesium .tool-card-lead{font-size:13px;color:var(--mut)}

/* ---- Longform ---- */
body.skin-caesium .longform{max-width:770px;background:var(--card);border:1px solid var(--line2);border-radius:4px;padding:36px}
body.skin-caesium .longform .lead-copy p:first-child{font-size:17.5px;color:var(--ink)}
body.skin-caesium .longform h2{font-size:23px;margin:28px 0 11px}
body.skin-caesium .longform p{margin:0 0 15px;color:var(--mut)}

/* ---- Articles ---- */
body.skin-caesium .art-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(258px,1fr));gap:13px}
body.skin-caesium .art-card{display:flex;flex-direction:column;gap:7px;background:var(--card);border:1px solid var(--line2);
  border-radius:3px;padding:19px;transition:.15s;position:relative;overflow:hidden}
body.skin-caesium .art-card::before{content:"";position:absolute;top:0;left:0;width:34px;height:2px;background:var(--c);box-shadow:0 0 8px var(--c)}
body.skin-caesium .art-card:hover{text-decoration:none;border-color:var(--c)}
body.skin-caesium .art-cluster{font-family:'IBM Plex Mono',monospace;font-size:10.5px;color:var(--violet);letter-spacing:.1em;text-transform:uppercase}
body.skin-caesium .art-title{font-weight:600;font-size:16.5px;line-height:1.3;color:#eef5fa}
body.skin-caesium .art-excerpt{font-size:13px;color:var(--mut)}
body.skin-caesium .art-meta{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--faint);margin-top:auto}

/* ---- FAQ ---- */
body.skin-caesium .faq-item{border:1px solid var(--line2);border-radius:3px;margin-bottom:8px;background:var(--card)}
body.skin-caesium .faq-q{cursor:pointer;padding:15px 18px;font-weight:600;font-size:15.5px;color:#eef5fa;list-style:none}
body.skin-caesium .faq-q::-webkit-details-marker{display:none}
body.skin-caesium .faq-q::after{content:"";float:right;width:22px;height:1px;background:var(--c);margin-top:11px;box-shadow:0 0 6px var(--c)}
body.skin-caesium .faq-item[open]{border-color:var(--c)}
body.skin-caesium .faq-item[open] .faq-q::after{width:8px}
body.skin-caesium .faq-a{padding:0 18px 16px;color:var(--mut)}

/* ---- Article page ---- */
body.skin-caesium .crumbs{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--faint);margin:22px 0 14px}
body.skin-caesium .crumbs span{margin:0 7px;color:var(--line2)}
body.skin-caesium .article{max-width:740px;background:var(--card);border:1px solid var(--line2);border-radius:4px;padding:40px}
body.skin-caesium .article-head h1{font-size:33px;margin:8px 0}
body.skin-caesium .article-meta{font-family:'IBM Plex Mono',monospace;color:var(--faint);font-size:12px}
body.skin-caesium .tool-cta,body.skin-caesium .tool-cta-foot{background:var(--c-l);border:1px solid rgba(37,208,232,.28);
  border-radius:3px;padding:20px 24px;display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin:24px 0}
body.skin-caesium .cta-btn{background:var(--c);color:#04222a;padding:11px 22px;border-radius:2px;font-weight:600}
body.skin-caesium .cta-btn:hover{background:#7ae7f7;color:#04222a;text-decoration:none}
body.skin-caesium .article-body{color:var(--mut);font-size:16.5px;line-height:1.72}
body.skin-caesium .article-body h2{font-size:25px;margin:34px 0 12px}
body.skin-caesium .article-body h3{font-size:19px;margin:26px 0 9px;color:var(--c)}
body.skin-caesium .article-body p{margin:0 0 16px}
body.skin-caesium .article-body ul,body.skin-caesium .article-body ol{margin:0 0 16px 22px}
body.skin-caesium .article-body li{margin:7px 0}
body.skin-caesium .article-body strong{color:#eef5fa}

/* ---- Index, error, footer ---- */
body.skin-caesium .page-head h1{font-size:35px}
body.skin-caesium .cluster-block{margin:44px 0}
body.skin-caesium .error-page{text-align:center;padding:88px 0}
body.skin-caesium .error-page h1{font-family:'IBM Plex Mono',monospace;font-size:90px;color:var(--c)}
body.skin-caesium .g-footer{background:#050a11;margin-top:56px;padding:46px 24px 24px;color:var(--mut);border-top:1px solid var(--line2)}
body.skin-caesium .g-foot-grid{max-width:1120px;margin:0 auto;display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:30px}
body.skin-caesium .g-foot-grid h4{color:#eef5fa;font-family:'IBM Plex Mono',monospace;font-size:11.5px;font-weight:600;
  letter-spacing:.1em;text-transform:uppercase;margin:0 0 12px}
body.skin-caesium .g-foot-grid a{display:block;color:var(--mut);font-size:13.5px;padding:4px 0}
body.skin-caesium .g-foot-grid a:hover{color:var(--c)}
body.skin-caesium .g-foot-brand .g-brand{color:#eef5fa}
body.skin-caesium .g-copy{max-width:1120px;margin:28px auto 0;border-top:1px solid var(--line);padding-top:18px;
  font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--faint)}

/* ---- Supplementary ---- */
body.skin-caesium .hero-copy{min-width:0}
body.skin-caesium .hero-tool,body.skin-caesium .hero-tool-page{min-width:0;align-self:center}
body.skin-caesium .hero-tool-page{max-width:800px;margin:0 auto 32px}
body.skin-caesium .lf-section{margin:8px 0}
body.skin-caesium .articles-strip-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:18px;flex-wrap:wrap}
body.skin-caesium .more-link{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--c)}
body.skin-caesium .faq-title{font-size:23px;margin:0 0 16px;padding-bottom:9px;border-bottom:1px solid var(--line2)}
body.skin-caesium .faq-list{max-width:770px;display:flex;flex-direction:column;gap:8px}
body.skin-caesium .page-head{margin-bottom:16px;border-bottom:1px solid var(--line2);padding-bottom:16px}
body.skin-caesium .page-head-lead{font-size:16.5px;color:var(--mut);max-width:640px;margin-top:9px}
body.skin-caesium .article-head{margin-bottom:16px;border-bottom:1px solid var(--line);padding-bottom:14px}
body.skin-caesium .empty-note{color:var(--faint);background:var(--card);border:1px dashed var(--line2);border-radius:3px;padding:24px;text-align:center}

/* ---- Widget flourishes: a readout, not a clock face ---- */
body.skin-caesium .wc-time,body.skin-caesium .tw-atomic-time,body.skin-caesium .tw-scale-time{
  font-family:'IBM Plex Mono',monospace;color:var(--c);text-shadow:0 0 26px rgba(37,208,232,.35);letter-spacing:.02em}
body.skin-caesium .tw-atomic-label{color:var(--faint);font-family:'IBM Plex Mono',monospace}
body.skin-caesium .tw-drift{font-family:'IBM Plex Mono',monospace;color:var(--mut)}
body.skin-caesium .tw-verdict.is-good{color:#3ddc84}
body.skin-caesium .tw-verdict.is-warn{color:var(--warn)}
body.skin-caesium .tw-verdict.is-bad{color:#ff6b5e}
body.skin-caesium .tw-scale-row{border-radius:2px}
body.skin-caesium .tw-scale-row:nth-child(odd){background:rgba(37,208,232,.05)}
body.skin-caesium .tw-scale-name{color:#eef5fa;font-family:'IBM Plex Mono',monospace}
body.skin-caesium .wc-date{color:var(--mut)}
body.skin-caesium .wc-input,body.skin-caesium .wc-select{border-radius:2px;background:#040910;border-color:var(--line2);color:var(--ink)}
body.skin-caesium .wc-fbtn{border-radius:2px;background:var(--c);color:#04222a}
body.skin-caesium .wc-fbtn2{border-radius:2px;border-color:var(--line2);color:var(--mut)}
body.skin-caesium .tw-note{color:var(--faint)}

@media(max-width:760px){
  body.skin-caesium .hero{grid-template-columns:1fr;gap:22px;padding:24px}
  body.skin-caesium .hero-h1{font-size:29px}
  body.skin-caesium .toolgrid{grid-template-columns:1fr}
  body.skin-caesium .g-foot-grid{grid-template-columns:1fr 1fr}
}