:root{--ink:#19313f;--soft:#536873;--line:#dce3e2;--teal:#0f766e;--orange:#f2673a;--paper:#f6f7f4;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:#19313f;color-scheme:light}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);font-size:16px;line-height:1.65}a{color:#075e58;text-underline-offset:3px}.doc-header,.doc-main,.doc-footer{width:min(1100px,calc(100% - 36px));margin-inline:auto}.doc-header{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:24px 0}.doc-brand{display:flex;align-items:center;gap:11px;color:var(--ink);text-decoration:none}.doc-brand img{width:32px;height:36px}.doc-brand span{display:grid;line-height:1.1}.doc-brand small{color:var(--orange);font-weight:800}.doc-nav{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:.88rem}.doc-main{padding:38px 0 72px}.doc-hero{max-width:850px;margin-bottom:34px}.eyebrow{margin:0 0 7px;color:var(--teal);font-size:.76rem;font-weight:850;letter-spacing:.1em;text-transform:uppercase}h1{margin:0;font-size:clamp(2.1rem,6vw,4.3rem);line-height:1;letter-spacing:-.045em}h2{margin:0 0 16px;font-size:clamp(1.35rem,3vw,2rem);line-height:1.2}h3{margin:0 0 8px;font-size:1rem}.lead{max-width:750px;color:var(--soft);font-size:1.08rem}.notice{margin:26px 0;padding:20px;border:2px solid #e2a05d;border-radius:15px;background:#fff8ed}.notice strong{color:#874414}.notice p:last-child{margin-bottom:0}.doc-section{margin-top:26px;padding:26px;border:1px solid var(--line);border-radius:16px;background:#fff}.explanation-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:24px}.plain,.technical{min-width:0}.plain{padding:18px;border-radius:12px;background:#eff7f5}.technical{padding:18px;border-left:3px solid var(--teal);background:#f8faf9}.label{display:block;margin-bottom:8px;color:var(--teal);font-size:.7rem;font-weight:850;letter-spacing:.09em;text-transform:uppercase}.doc-section p,.doc-section li{color:#405661}.doc-section ul{padding-left:20px}.formula,code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.formula{overflow-x:auto;padding:13px;border-radius:9px;background:#172f3d;color:#fff;font-size:.86rem}.source-list{display:grid;gap:12px}.source-item{padding:14px;border:1px solid var(--line);border-radius:10px}.source-item strong{display:block}.google-maps-attribution{color:#5e5e5e;font-size:14px;font-style:normal;font-weight:400;letter-spacing:normal;white-space:nowrap}.doc-footer{display:flex;flex-wrap:wrap;justify-content:space-between;gap:18px;padding:24px 0;border-top:1px solid var(--line);color:var(--soft);font-size:.82rem}@media(max-width:700px){.doc-header{align-items:flex-start;flex-direction:column}.doc-main{padding-top:18px}.doc-section{padding:18px}.explanation-grid{grid-template-columns:1fr}.plain,.technical{padding:15px}.technical{border-left:0;border-top:3px solid var(--teal)}h1{font-size:2.45rem}}