:root{color-scheme:light;--bg: #f6f1e8;--panel: rgba(255, 252, 247, .88);--panel-strong: #fffaf2;--ink: #11211d;--muted: #58635d;--line: rgba(17, 33, 29, .1);--brand: #0f766e;--brand-deep: #0b4f4a;--warm: #f59e0b;--success: #16794d;--shadow: 0 20px 60px rgba(17, 33, 29, .12);font-family:Space Grotesk,Segoe UI,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:radial-gradient(circle at top left,rgba(245,158,11,.18),transparent 24%),radial-gradient(circle at top right,rgba(15,118,110,.18),transparent 28%),linear-gradient(180deg,#fcf8ef 0%,var(--bg) 100%);font-family:IBM Plex Sans,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(15,118,110,.35);outline-offset:2px}.page-shell{width:min(1180px,calc(100% - 2rem));margin:0 auto;padding:2rem 0 4rem}.nav-row{margin-top:.5rem}.back-link{display:inline-flex;padding:.7rem 1rem;border-radius:999px;border:1px solid var(--line);background:#ffffffad;font-weight:700}.hero,.calculator-section,.comparison-section,.notes-section{margin-top:1.5rem;padding:2rem;border:1px solid var(--line);border-radius:28px;background:var(--panel);backdrop-filter:blur(12px);box-shadow:var(--shadow)}.hero{display:grid;grid-template-columns:1.4fr .9fr;gap:1.5rem;align-items:stretch}.eyebrow,.card-label,.formula-label{margin:0 0 .75rem;color:var(--brand-deep);font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase}h1,h2{margin:0;font-family:Space Grotesk,Segoe UI,sans-serif;line-height:.98}h1{max-width:14ch;font-size:clamp(3rem,8vw,5.5rem)}h2{font-size:clamp(2rem,5vw,3rem)}.lede,.section-copy p,.card-footnote,.note-card p,code,td,th,label,.highlights,.price-line,.signal-strip span,.signal-strip strong,.formula-box p{line-height:1.55}.hero-copy{display:grid;gap:1.25rem}.warning-copy,.subtle-copy{margin:0;padding:.9rem 1rem;border-radius:18px;border:1px solid var(--line)}.warning-copy{background:#f59e0b24}.subtle-copy{background:#0f766e14}.hero-actions{display:flex;flex-wrap:wrap;gap:.75rem}.button{display:inline-flex;align-items:center;justify-content:center;padding:.95rem 1.25rem;border-radius:999px;font-weight:700;transition:transform .15s ease,box-shadow .15s ease}.button:hover{transform:translateY(-1px)}.button.primary{background:var(--ink);color:#fff}.button.secondary{border:1px solid var(--line);background:#ffffffb3}.highlights{display:grid;gap:.6rem;padding:0;margin:0;list-style:none;color:var(--muted)}.highlights li:before{content:"01";display:inline-block;width:2.4rem;margin-right:.6rem;color:var(--warm);font-weight:700}.highlights li:nth-child(2):before{content:"02"}.highlights li:nth-child(3):before{content:"03"}.hero-card{padding:1.5rem;border-radius:24px;background:linear-gradient(180deg,#0f766e14,#ffffffe6);border:1px solid rgba(15,118,110,.16)}.hero-card dl{display:grid;gap:1rem;margin:1.5rem 0}.hero-card dt{color:var(--muted);font-size:.85rem}.hero-card dd{margin:.2rem 0 0;font-weight:700}.price-line{font-size:1.15rem;font-weight:700}.signal-strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem;margin-top:1.25rem;padding:1rem 1.25rem;border-radius:22px;background:var(--panel-strong);border:1px solid var(--line)}.signal-strip div{display:grid;gap:.25rem}.signal-strip span{color:var(--muted);font-size:.85rem}.calculator-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:1.5rem;margin-top:1.5rem}.calculator-form,.results-panel,.notes-grid,.source-entry-list{display:grid;gap:1rem}.calculator-form label{display:grid;gap:.5rem;padding:1rem;border-radius:20px;background:#ffffffb3;border:1px solid var(--line);font-weight:600}.calculator-form input{padding:.85rem 1rem;border-radius:14px;border:1px solid rgba(17,33,29,.18);font:inherit}.results-panel{grid-template-columns:repeat(2,minmax(0,1fr))}.result-card,.formula-box,.note-card{padding:1.1rem;border-radius:20px;border:1px solid var(--line);background:#ffffffc2}.result-card strong{display:block;margin-top:.45rem;font-family:Space Grotesk,Segoe UI,sans-serif;font-size:clamp(1.8rem,4vw,2.5rem)}.result-card.accent{background:#f59e0b24}.result-card.success{background:#16794d1f}.formula-box{grid-column:1 / -1}.formula-box code{display:block;padding:.8rem;margin:.75rem 0;border-radius:16px;background:#efe6d8;overflow-x:auto}.table-wrap{margin-top:1.5rem;overflow-x:auto}table{width:100%;border-collapse:collapse;min-width:720px}th,td{padding:1rem;text-align:left;border-bottom:1px solid var(--line)}th{font-family:Space Grotesk,Segoe UI,sans-serif;font-size:.95rem}.notes-grid{grid-template-columns:repeat(3,minmax(0,1fr));margin-top:1.5rem}.source-section-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-top:1.5rem}.source-section-card,.source-entry-card{padding:1.1rem;border-radius:20px;border:1px solid var(--line);background:#ffffffc2}.source-section-card{display:grid;gap:1rem}.source-section-card h3{margin:0;font-family:Space Grotesk,Segoe UI,sans-serif;font-size:1.35rem}.source-entry-card{min-height:150px}.source-entry-header{display:flex;align-items:center;justify-content:space-between;gap:.75rem}.source-entry-header span{padding:.2rem .6rem;border-radius:999px;background:#0f766e1f;color:var(--brand-deep);font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em}.catalog-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-top:1.5rem}.catalog-card,.cluster-card{display:grid;gap:1rem;padding:1.25rem;border-radius:22px;border:1px solid var(--line);background:#ffffffc7}.catalog-card h3,.cluster-card h3{margin:0;font-family:Space Grotesk,Segoe UI,sans-serif;font-size:1.55rem}.cluster-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin-top:1.5rem}.catalog-metrics{display:grid;gap:.8rem;margin:0}.catalog-metrics dt{color:var(--muted);font-size:.85rem}.catalog-metrics dd{margin:.2rem 0 0;font-weight:700}.note-card{min-height:140px}.site-footer{display:grid;gap:1rem;margin-top:1.5rem;padding:1.5rem;border-radius:24px;border:1px solid var(--line);background:#ffffffc7}.site-footer__copy{max-width:70ch}.site-footer__copy p:last-child,.site-footer__meta{margin:0;color:var(--muted);line-height:1.55}.site-footer__nav{display:flex;flex-wrap:wrap;gap:.75rem}.site-footer__nav a{display:inline-flex;align-items:center;padding:.7rem .95rem;border-radius:999px;border:1px solid var(--line);background:#ffffffb8;font-weight:700}@media(max-width:900px){.hero,.calculator-grid,.notes-grid,.source-section-grid,.catalog-grid,.cluster-grid,.signal-strip{grid-template-columns:1fr}.page-shell{width:min(100% - 1rem,100%)}.hero,.calculator-section,.comparison-section,.notes-section{padding:1.25rem;border-radius:24px}}