:root{
  --bg:#eef9ff;
  --card:#ffffff;
  --ink:#102238;
  --muted:#5b6b7d;
  --teal:#0e7490;
  --aqua:#22d3ee;
  --mint:#dcfce7;
  --line:#bae6fd;
  --amber:#f59e0b;
  --shadow:0 24px 60px rgba(14,116,144,.16);
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:radial-gradient(circle at 14% 5%,#cffafe,transparent 28rem),radial-gradient(circle at 88% 10%,#bbf7d0,transparent 24rem),linear-gradient(180deg,#f8fdff,var(--bg))}
main{max-width:1120px;margin:0 auto;padding:22px}.site-nav{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:0 0 24px;padding:12px 16px;background:rgba(255,255,255,.9);border:1px solid #d7e8f0;border-radius:24px;box-shadow:0 10px 24px rgba(22,31,54,.06);backdrop-filter:blur(12px)}.site-brand{display:inline-flex;align-items:center;gap:10px;color:#172033;text-decoration:none;font-weight:850}.brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:12px;background:#172033;color:#fff}.site-nav a:not(.site-brand),.crumb a{color:var(--teal);text-decoration:none;font-weight:800}.site-nav a:hover,.crumb a:hover{text-decoration:underline}.crumb{display:flex;justify-content:space-between;gap:12px;margin-bottom:28px;color:var(--muted);font-size:.94rem}.hero{padding:10px 0 42px}.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 440px;gap:34px;align-items:center}.eyebrow{text-transform:uppercase;letter-spacing:.14em;color:var(--teal);font-weight:950;font-size:.78rem;margin:0 0 12px}h1{font-size:clamp(2.45rem,6.4vw,5.1rem);letter-spacing:-.045em;line-height:.94;margin:0 0 18px}h2{letter-spacing:-.035em}.lede{font-size:clamp(1.08rem,2vw,1.32rem);line-height:1.65;color:var(--muted);max-width:650px}.preset-row,.controls-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.preset,.pill,.primary,.secondary{border:0;border-radius:999px;font-weight:900;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .15s ease}.preset,.pill{padding:11px 15px;background:#fff;border:1px solid var(--line);color:var(--ink);box-shadow:0 8px 20px rgba(14,116,144,.08)}.preset:hover,.pill:hover,.primary:hover,.secondary:hover{transform:translateY(-1px)}.preset.active,.pill.active{background:var(--teal);color:#fff;border-color:var(--teal)}.custom-label{display:inline-flex;align-items:center;gap:9px;padding:8px 8px 8px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:850;color:var(--muted)}input{width:82px;border:0;background:#edfaff;border-radius:999px;padding:10px 12px;font:inherit;font-weight:900;color:var(--ink);outline:2px solid transparent}input:focus{outline-color:var(--aqua)}.timer-card{background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:36px;padding:28px;text-align:center;box-shadow:var(--shadow)}.progress-wrap{position:relative;width:min(78vw,300px);margin:0 auto 10px}.ring{width:100%;height:auto;transform:rotate(-90deg)}.ring-bg,.ring-fill{fill:none;stroke-width:16}.ring-bg{stroke:#e0f2fe}.ring-fill{stroke:var(--teal);stroke-linecap:round;transition:stroke-dashoffset .35s linear}.time{position:absolute;inset:0;display:grid;place-items:center;font-size:clamp(3rem,12vw,4.9rem);font-weight:950;letter-spacing:-.07em}.timer-card h2{font-size:1.45rem;margin:12px 0 6px}.timer-card p{color:var(--muted);line-height:1.55;margin:0 auto 18px;max-width:360px}.steps{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0}.steps div{padding:12px;border-radius:20px;background:#f0f9ff;border:1px solid #dbeafe;text-align:left;color:var(--muted)}.steps div.active{background:linear-gradient(135deg,var(--mint),#cffafe);border-color:var(--aqua);color:var(--ink);box-shadow:0 10px 24px rgba(34,211,238,.16)}.steps strong,.steps span{display:block}.steps strong{font-size:.92rem;color:var(--ink)}.steps span{font-size:.8rem;margin-top:3px}.actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.primary,.secondary{padding:14px 20px}.primary{background:var(--teal);color:#fff;box-shadow:0 12px 24px rgba(14,116,144,.24)}.secondary{background:#e0f2fe;color:var(--teal)}.content-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:22px 0}.info-card,.faq,.related,.tips{background:rgba(255,255,255,.86);border:1px solid var(--line);border-radius:28px;padding:24px;box-shadow:0 14px 35px rgba(15,23,42,.05)}.info-card h2,.faq h2,.related h2,.tips h2{margin-top:0}.info-card li{margin:10px 0;color:var(--muted);line-height:1.55}.highlight{background:linear-gradient(135deg,#ecfeff,#f0fdf4)}.note{font-size:.95rem;color:var(--muted);line-height:1.6}.tip-grid,.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.tip-grid div{background:#f0f9ff;border:1px solid #dbeafe;border-radius:20px;padding:14px}.tip-grid strong,.tip-grid span{display:block}.tip-grid span{margin-top:6px;color:var(--muted);line-height:1.45}.faq{margin-top:18px}.faq details{border-top:1px solid var(--line);padding:16px 0}.faq details:first-of-type{border-top:0}.faq summary{cursor:pointer;font-weight:900}.faq p{color:var(--muted);line-height:1.6}.related{margin-top:18px}.related-grid{grid-template-columns:repeat(4,1fr)}.related a{display:block;padding:14px;border-radius:18px;background:#f0f9ff;color:var(--teal);font-weight:850;text-decoration:none}.related a:hover{text-decoration:underline}footer{text-align:center;color:var(--muted);padding:38px 0 18px}
@media (max-width:880px){main{padding:16px}.hero-grid,.content-grid{grid-template-columns:1fr}.timer-card{order:-1}.crumb{display:block}.related-grid,.tip-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.site-nav{border-radius:18px}.timer-card{padding:20px;border-radius:28px}.steps,.related-grid,.tip-grid{grid-template-columns:1fr}.actions .primary,.actions .secondary{width:100%}h1{font-size:2.65rem}}