:root{--bg:#faf8f4;--card:#fff;--ink:#1f2933;--muted:#607080;--line:#e7e1d8;--brand:#815b46;--brand2:#5f4030;--soft:#f0e7df;--ok:#255c45;--warn:#8a5a00;--shadow:0 12px 32px rgba(49,37,28,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink);line-height:1.58}a{color:var(--brand2)}a:hover{text-decoration-thickness:2px}img{max-width:100%;height:auto}.wrap{width:min(1120px,calc(100% - 32px));margin:auto}.site-header{position:sticky;top:0;z-index:30;background:rgba(250,248,244,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:68px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800}.brand-mark{width:36px;height:36px;border-radius:12px;background:var(--brand);display:grid;place-items:center;color:#fff;font-weight:900}.nav{display:flex;gap:6px;flex-wrap:wrap}.nav a{padding:8px 10px;border-radius:10px;text-decoration:none;color:var(--ink);font-size:.92rem}.nav a:hover{background:var(--soft)}.hero{padding:64px 0 36px}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:start}.eyebrow{display:inline-flex;gap:8px;align-items:center;background:var(--soft);padding:6px 10px;border-radius:999px;font-size:.86rem;font-weight:700;color:var(--brand2)}h1,h2,h3{line-height:1.15;letter-spacing:-.025em}h1{font-size:clamp(2.25rem,6vw,4.65rem);margin:.7rem 0 1rem}h2{font-size:clamp(1.55rem,3.4vw,2.35rem);margin:0 0 .75rem}h3{font-size:1.15rem;margin:1.2rem 0 .45rem}.lead{font-size:1.12rem;color:var(--muted);max-width:740px}.card{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:24px}.calc-card{position:relative}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}label{font-weight:700;font-size:.92rem}input,select{width:100%;border:1px solid #cfc5bb;border-radius:12px;padding:12px 13px;background:#fff;color:var(--ink);font:inherit}input:focus,select:focus,button:focus{outline:3px solid rgba(129,91,70,.18);outline-offset:2px;border-color:var(--brand)}.btn{border:0;border-radius:12px;background:var(--brand);color:#fff;font-weight:800;padding:12px 16px;cursor:pointer;font:inherit}.btn:hover{background:var(--brand2)}.btn.secondary{background:var(--soft);color:var(--ink)}.result{margin-top:16px;border:1px solid #cddbd4;background:#f4faf6;border-radius:16px;padding:18px}.result strong.big{display:block;font-size:1.8rem;color:var(--ok)}.small{font-size:.88rem;color:var(--muted)}.notice{border-left:4px solid var(--brand);background:#fff8f1;padding:14px 16px;border-radius:10px;margin:18px 0}.notice.warn{border-color:#c28718;background:#fff9e9}.section{padding:42px 0}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.mini-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:19px}.mini-card p{margin:.4rem 0 0;color:var(--muted)}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px;background:#fff}table{border-collapse:collapse;width:100%;min-width:520px}th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}th{background:#f6f1ec}.pill{display:inline-block;padding:4px 8px;border-radius:999px;background:var(--soft);font-size:.82rem;font-weight:700}.share{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.share a,.share button{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:10px;padding:8px 10px;font:inherit;text-decoration:none;cursor:pointer}.share a:hover,.share button:hover{background:var(--soft)}.breadcrumb{font-size:.88rem;color:var(--muted);padding-top:22px}.breadcrumb a{color:inherit}.article{max-width:820px}.article p,.article li{color:#384754}.article ul{padding-left:1.2rem}.toc{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:18px 0}.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:10px 0}.faq summary{font-weight:800;cursor:pointer}.site-footer{border-top:1px solid var(--line);padding:34px 0 48px;margin-top:44px}.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:22px}.footer-links{display:flex;flex-direction:column;gap:7px}.footer-links a{color:var(--muted)}.cookie-banner{position:fixed;left:16px;right:16px;bottom:16px;z-index:60;max-width:760px;margin:auto;background:#fff;border:1px solid var(--line);box-shadow:0 18px 60px rgba(0,0,0,.2);border-radius:18px;padding:18px;display:none}.cookie-banner.show{display:block}.cookie-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.cookie-panel{display:none;margin-top:12px;padding-top:12px;border-top:1px solid var(--line)}.cookie-panel.show{display:block}.toggle-row{display:flex;justify-content:space-between;gap:12px;padding:8px 0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.formula{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:#f5f0ea;border:1px solid var(--line);border-radius:10px;padding:12px 14px;overflow:auto}.source-list li{margin:.55rem 0}@media(max-width:860px){.hero-grid,.grid-3,.grid-2,.footer-grid{grid-template-columns:1fr}.nav{display:none}.hero{padding-top:38px}.card{padding:18px}}@media(max-width:540px){.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}h1{font-size:2.35rem}.wrap{width:min(100% - 22px,1120px)}}