/* Kelvin web tools (calculator + temperature chart). Same palette as the Kelvin guides. */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:radial-gradient(120% 80% at 8% 0%,rgba(255,138,76,.10) 0%,rgba(255,138,76,0) 45%),radial-gradient(120% 90% at 95% 5%,rgba(63,199,232,.16) 0%,rgba(63,199,232,0) 50%),linear-gradient(170deg,#f6f3ec 0%,#eef0ea 50%,#e9efec 100%);background-attachment:fixed;color:#243B3A;line-height:1.65}
header.kv-top{background:linear-gradient(180deg,#fff 0%,#fbfaf5 100%);padding:1rem 1.5rem;border-bottom:1px solid #e4ded2}
.kv-top__in{max-width:880px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.kv-brand{display:flex;align-items:center;gap:.5rem;font-size:1.3rem;font-weight:700;color:#1F9CC0;text-decoration:none}
.kv-brand img{border-radius:8px}
.kv-top a.kv-get{color:#fff;background:linear-gradient(135deg,#1F9CC0 0%,#3FC7E8 100%);padding:.45rem .9rem;border-radius:8px;text-decoration:none;font-weight:600;font-size:.9rem}
main{max-width:880px;margin:0 auto;padding:1.5rem 1.25rem 1rem}
.kv-crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:.35rem;font-size:.85rem;color:#90a3a1;margin:0 0 1rem}
.kv-crumbs a{color:#5d7472}
.kv-eyebrow{font-size:.75rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#2E6E6A;margin:0 0 .4rem}
h1{font-size:2rem;line-height:1.2;margin:0 0 .9rem;letter-spacing:-.02em}
h2{font-size:1.35rem;color:#1F9CC0;margin:2.2rem 0 .5rem}
h3{font-size:1.02rem;color:#15728F;margin:1.3rem 0 .25rem}
p{color:#4d6563;margin:.8rem 0}
.kv-lede{color:#3f5654;font-size:1.06rem}
ul,ol{color:#4d6563;margin:.8rem 0 .8rem 1.4rem}
li{margin:.35rem 0}
a{color:#1F9CC0}
strong{color:#15728F}
.kv-card{background:#FBF9F4;border:1px solid #e4ded2;border-radius:16px;padding:1.4rem;margin:1.4rem 0}
.kv-form{display:grid;gap:1rem}
.kv-row{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem}
.kv-label{font-weight:700;color:#243B3A}
.kv-num{width:6.5rem;font-size:1.4rem;font-weight:700;padding:.35rem .5rem;border:1px solid #cfd8d6;border-radius:10px;color:#15728F;background:#fff}
.kv-seg{display:inline-flex;border:1px solid #cfd8d6;border-radius:10px;overflow:hidden;background:#fff}
.kv-seg label{padding:.45rem .9rem;cursor:pointer;font-weight:600;color:#5d7472}
.kv-seg input{position:absolute;opacity:0;pointer-events:none}
.kv-seg label:has(input:checked){background:#1F9CC0;color:#fff}
.kv-range{width:100%;accent-color:#1F9CC0}
.kv-privacy{font-size:.82rem;color:#90a3a1;margin:0}
.kv-zone{border-radius:12px;padding:.9rem 1rem;margin:1rem 0;font-weight:600}
.kv-zone--cool,.kv-zone--notCold{background:rgba(63,199,232,.12);color:#15728F}
.kv-zone--coldShock{background:rgba(31,156,192,.16);color:#0f5f78}
.kv-zone--tooCold{background:rgba(255,138,76,.16);color:#a3461a}
.kv-big{display:flex;flex-wrap:wrap;gap:1rem;margin:.6rem 0}
.kv-stat{flex:1 1 9rem;background:#fff;border:1px solid #e4ded2;border-radius:12px;padding:.8rem 1rem}
.kv-stat b{display:block;font-size:1.9rem;color:#1F9CC0;line-height:1.1}
.kv-stat span{font-size:.85rem;color:#5d7472}
.table-wrap{overflow-x:auto;margin:1rem 0;border:1px solid #e4ded2;border-radius:12px;background:#FBF9F4}
table{border-collapse:collapse;width:100%;font-size:.9rem}
th,td{text-align:left;padding:.6rem .75rem;border-bottom:1px solid #e8e2d6}
thead th{color:#15728F;font-size:.72rem;text-transform:uppercase;letter-spacing:.08em}
td{color:#4d6563}
.n{text-align:right;white-space:nowrap}
tr.kv-dropline td{background:rgba(255,138,76,.08)}
.kv-warn{list-style:none;margin:.8rem 0;padding:0;display:grid;gap:.5rem}
.kv-warn li{border-left:3px solid #1F9CC0;background:#fff;border-radius:8px;padding:.6rem .8rem;margin:0}
.kv-warn li.caution{border-color:#FF8A4C}
.kv-warn li.danger{border-color:#c0392b}
.note{background:rgba(255,138,76,.12);border-left:3px solid #FF8A4C;padding:1rem 1.2rem;border-radius:8px;margin:1.5rem 0}
.note p{margin:.3rem 0;color:#7a4322;font-size:.94rem}
.note strong{color:#b4501d}
.kv-chart{min-width:760px;font-size:.84rem}
.kv-chart th[scope=row]{white-space:nowrap;color:#243B3A}
.kv-c{display:block;font-weight:400;color:#90a3a1;font-size:.78rem}
.kv-band{font-size:.78rem;font-weight:700;white-space:nowrap}
.kv-row--extreme .kv-band{color:#a3461a}
.kv-row--shock .kv-band{color:#0f5f78}
.kv-row--cool .kv-band{color:#2E6E6A}
.kv-cell{text-align:center;font-size:.76rem;font-weight:600}
.kv-cell--ok{background:rgba(63,199,232,.18);color:#0f5f78}
.kv-cell--drop{background:rgba(255,183,77,.28);color:#7a4a00}
.kv-cell--past{background:rgba(192,57,43,.14);color:#8e2a1f}
.kv-legend{display:flex;flex-wrap:wrap;gap:.6rem;font-size:.85rem;margin:.6rem 0}
.kv-legend span{padding:.2rem .55rem;border-radius:6px}
.kv-links{display:flex;flex-wrap:wrap;gap:.5rem;list-style:none;margin:.8rem 0;padding:0}
.kv-links li{margin:0}
.kv-links a{display:inline-block;padding:.4rem .75rem;border:1px solid #cfe3ea;border-radius:999px;background:#fff;text-decoration:none;font-size:.9rem}
.kv-faq details{background:#fff;border:1px solid #e4ded2;border-radius:10px;padding:.7rem 1rem;margin:.5rem 0}
.kv-faq summary{cursor:pointer;font-weight:600;color:#243B3A}
.cta{margin:2.5rem 0 1rem;padding:1.8rem;background:#FBF9F4;border:1px solid #e4ded2;border-radius:16px;text-align:center}
.cta h2{margin-top:0}
.cta-buttons{display:flex;gap:.85rem;flex-wrap:wrap;justify-content:center;margin-top:1.1rem}
.btn{padding:.75rem 1.4rem;border-radius:8px;font-size:.95rem;text-decoration:none;display:inline-block;font-weight:600;background:linear-gradient(135deg,#1F9CC0 0%,#3FC7E8 100%);color:#fff}
footer{text-align:center;padding:2rem 1.5rem 3rem;border-top:1px solid #e4ded2;color:#90a3a1;font-size:.85rem;margin-top:2rem}
footer a{color:#1F9CC0;text-decoration:none}
table.kv-ramp td:first-child{white-space:nowrap}
@media (max-width:700px){.kv-ramp th:nth-child(4),.kv-ramp td:nth-child(4){display:none}.kv-ramp th,.kv-ramp td{padding:.55rem .6rem}.kv-ramp th{white-space:normal}.kv-card{padding:1rem}h1{font-size:1.6rem}.cta{padding:1.3rem}.btn{width:100%;text-align:center}}