:root{--paper:#f5f1ec;--white:#fffdf9;--ink:#252625;--muted:#5f625f;--line:#d8d1c8;--accent:#9a402f;--accent-dark:#753126;--accent-light:#f0ddd6;--dark:#202421;--green:#365d4b;--radius:10px;--wrap:1060px;color-scheme:light}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Segoe UI,Arial,sans-serif;font-size:17px;line-height:1.68}::-moz-selection{background:var(--accent);color:white}::selection{background:var(--accent);color:white}a{color:var(--accent-dark);text-underline-offset:3px;text-decoration-thickness:1.5px}a:hover{color:var(--accent)}:focus-visible{outline:3px solid var(--accent);outline-offset:3px}h1,h2,h3{margin-top:0;font-family:Georgia,Times New Roman,serif;line-height:1.12;letter-spacing:-.018em}h1{max-width:18ch;margin-bottom:22px;font-size:clamp(40px,6vw,66px)}h2{margin-bottom:14px;font-size:clamp(27px,3.5vw,38px)}h3{margin-bottom:8px;font-size:21px}p{margin:0 0 18px}.wrap{width:min(calc(100% - 40px),var(--wrap));margin-inline:auto}.article-wrap{width:min(calc(100% - 40px),790px);margin-inline:auto}.skip-link{position:absolute;left:-9999px;top:0;z-index:100;padding:10px 16px;border-radius:6px;background:var(--ink);color:white}.skip-link:focus{left:16px;top:12px}.site-header{position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line);background:rgba(245,241,236,.96);backdrop-filter:blur(10px)}.header-inner{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-family:Georgia,Times New Roman,serif;font-size:22px;font-weight:700;text-decoration:none}.brand-mark{position:relative;width:25px;height:25px;border:2px solid var(--ink);border-radius:5px}.brand-mark:before{content:"";position:absolute;left:7px;bottom:5px;width:10px;height:10px;border-left:3px solid var(--ink);border-bottom:3px solid var(--ink)}.brand-mark:after{content:"";position:absolute;top:4px;right:4px;width:6px;height:6px;border-radius:2px;background:var(--accent)}.top-nav{display:flex;align-items:center;gap:24px;font-size:15px;font-weight:600}.top-nav a{color:var(--muted);text-decoration:none}.top-nav a:hover,.top-nav a[aria-current=page]{color:var(--ink)}.hero{position:relative;overflow:hidden;padding:70px 0 62px;border-bottom:1px solid var(--line);background:radial-gradient(48% 64% at 92% 6%,rgba(154,64,47,.17),transparent 72%),radial-gradient(38% 52% at 78% 96%,rgba(54,93,75,.12),transparent 76%),var(--paper)}.eyebrow{display:block;margin-bottom:18px;color:var(--accent);font-size:12px;font-weight:700;letter-spacing:.14em}.lede{max-width:43em;margin-bottom:0;color:var(--muted);font-size:20px}.meta{margin-top:24px}.breadcrumbs,.meta{color:var(--muted);font-size:13px}.breadcrumbs{display:flex;gap:9px;align-items:center;margin-bottom:30px}.breadcrumbs a{color:var(--muted);text-decoration:none}.breadcrumbs a:hover{color:var(--accent)}.article-section{padding:66px 0}.article-section.white{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--white)}.article-section h2{margin-top:48px}.article-section h2:first-child{margin-top:0}.article-section h3{margin-top:30px}.article-section ol,.article-section ul{margin:0 0 22px;padding-left:25px}.article-section li{margin:8px 0;padding-left:4px;color:var(--muted)}.answer,.checklist,.formula{margin:0 0 38px;padding:26px 28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--accent-light)}.answer h2,.checklist h3,.formula h3{margin:0 0 10px;font-size:22px}.answer p:last-child,.checklist ul:last-child,.formula p:last-child{margin-bottom:0}.formula-line{display:block;margin:15px 0;padding:13px 16px;border-radius:7px;background:var(--white);font-family:Consolas,Courier New,monospace;font-size:16px;font-weight:700}.table-scroll{margin:26px 0 34px;overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--white)}table{width:100%;border-collapse:collapse;font-size:15px}td,th{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{color:var(--ink);background:#ebe5dd;font-weight:700}td{color:var(--muted)}tr:last-child td{border-bottom:0}.note{margin:28px 0;padding:20px 22px;border-left:4px solid var(--green);background:rgba(54,93,75,.08)}.note strong{display:block;margin-bottom:5px}.cards-section{padding:68px 0 78px}.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;margin-top:36px}.card{display:flex;flex-direction:column;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white)}.card .tag{margin-bottom:12px;color:var(--accent);font-size:11px;font-weight:700;letter-spacing:.13em}.card p{color:var(--muted)}.card a{margin-top:auto;font-weight:700}.next-guide{padding:62px 0;border-top:1px solid var(--line);background:var(--white)}.next-guide p{max-width:40em;color:var(--muted)}.button{display:inline-block;padding:12px 20px;border-radius:7px;background:var(--accent);color:white;font-weight:700;text-decoration:none}.button:hover{background:var(--accent-dark);color:white}.pro-box{padding:42px 0;background:var(--dark);color:#f4f2ed}.pro-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}.pro-box h2{margin-bottom:8px;color:white;font-size:28px}.pro-box p{max-width:44em;margin:0;color:#c8ccc8}.pro-box a{flex:none;color:#f4c6b9;font-weight:700}.sources{margin-top:46px;padding-top:28px;border-top:1px solid var(--line)}.sources h2{font-size:25px}.sources li{margin-bottom:10px}.site-footer{padding:36px 0 42px;border-top:1px solid #353a36;background:var(--dark);color:#bfc4bf;font-size:14px}.footer-inner{display:flex;align-items:flex-start;justify-content:space-between;gap:30px}.footer-links{display:flex;flex-wrap:wrap;gap:18px}.site-footer a{color:#d7dad7}.footer-note{max-width:48em;margin-top:16px;color:#9ea49e}@media (max-width:720px){.article-wrap,.wrap{width:min(calc(100% - 30px),var(--wrap))}.top-nav a:first-child{display:none}.hero{padding:52px 0 48px}.lede{font-size:18px}.article-section{padding:52px 0}.card-grid{grid-template-columns:1fr}.footer-inner,.pro-inner{align-items:flex-start;flex-direction:column}.answer,.card,.checklist,.formula{padding:22px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{.next-guide,.pro-box,.site-footer,.site-header{display:none}body{background:white;color:black}}