:root{--forest:#18382f;--deep:#112b25;--cream:#f7f3e9;--paper:#fffcf6;--ink:#25382f;--muted:#617168;--line:#dce1d5;--orange:#df8e5b;--mint:#dce9d8;--shadow:0 24px 70px rgba(28,52,40,.09)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--cream);color:var(--ink);font:16px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}a{color:inherit}a:hover{color:#a45f35}img{max-width:100%}.wrap{width:min(1160px,calc(100% - 40px));margin-inline:auto}.skip{position:absolute;top:-60px;left:12px;padding:9px 14px;background:white;z-index:10}.skip:focus{top:12px}.site-header{background:var(--paper);border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:26px;min-height:90px}.brand{display:flex;gap:12px;align-items:center;text-decoration:none}.brand-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--forest);color:#fff;font-size:29px;line-height:1}.brand-words{display:grid;line-height:1.2}.brand-words strong{font-size:14px;letter-spacing:.11em}.brand-words small{font-size:9px;letter-spacing:.16em;color:var(--muted);margin-top:5px}.site-header nav{display:flex;gap:23px}.site-header nav a,.lang a{text-decoration:none;font-size:13px;font-weight:700}.lang{display:flex;gap:8px;align-items:center;font-size:12px;letter-spacing:.05em}.lang a[aria-current]{color:#a45f35}.eyebrow{font-size:11px;font-weight:800;letter-spacing:.18em;text-transform:uppercase;color:#a45f35}.hero{background:var(--forest);color:#fff;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.13fr .87fr;gap:65px;align-items:center;min-height:550px;padding-block:74px}.hero .eyebrow{color:#efb887}.hero h1,h1,h2,h3{font-family:Georgia,"Times New Roman",serif;line-height:1.12;letter-spacing:-.025em}.hero h1{font-size:clamp(42px,5.5vw,76px);max-width:740px;margin:15px 0 22px}.lead{font-size:clamp(18px,1.8vw,21px);line-height:1.6}.hero .lead{max-width:650px;color:#dde9dd}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 20px;border:1px solid var(--orange);border-radius:7px;background:var(--orange);color:var(--deep);font-weight:800;text-decoration:none;cursor:pointer;font:inherit}.button:hover{background:#f0a979;color:var(--deep)}.button-light{background:transparent;color:#fff;border-color:#8fa79b}.button-light:hover{background:#294d40;color:#fff}.plan-art{position:relative;min-height:355px;max-width:450px;width:100%;margin:auto;padding:36px;background:#23473b;border:1px solid #567363;border-radius:15px;box-shadow:0 25px 45px rgba(0,0,0,.16);background-image:linear-gradient(rgba(233,239,217,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(233,239,217,.07) 1px,transparent 1px);background-size:23px 23px}.plan-room{height:246px;width:80%;margin:34px auto 0;border:3px solid #ecb887;position:relative;display:grid;place-items:center;color:#fce9cf}.plan-room:before{content:"";position:absolute;top:35%;left:-3px;width:28px;height:72px;border:3px solid #ecb887;border-left:0;background:#23473b}.plan-room span{font:700 45px Georgia,serif}.plan-room small{font-size:20px}.plan-door{position:absolute;bottom:-3px;right:24px;width:52px;border-bottom:6px solid #23473b;box-shadow:0 -3px #ecb887}.plan-top{position:absolute;top:36px;left:44%;font-size:13px;color:#f4cfad}.plan-side{position:absolute;left:12px;top:48%;font-size:13px;color:#f4cfad;writing-mode:vertical-rl}.plan-caption{position:absolute;bottom:13px;right:25px;color:#d9e4d8}.note-band{display:grid;grid-template-columns:1fr 1.15fr;gap:45px;align-items:center;margin-top:36px;padding:27px 36px;border:1px solid var(--line);border-left:5px solid var(--orange);background:var(--paper)}.note-band h2{font-size:23px;margin:7px 0}.note-band p{margin:0;color:var(--muted)}.section{padding-block:85px}.section-head{max-width:720px;margin-bottom:32px}.section-head h2{font-size:clamp(31px,3.5vw,47px);margin:10px 0}.section-head p{color:var(--muted);font-size:17px}.steps ol{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:17px;padding:0;margin:0}.steps li{padding:26px;min-height:180px;background:var(--paper);border:1px solid var(--line);font-weight:600}.steps li span{display:block;color:#af6d44;font:700 34px Georgia,serif;margin-bottom:19px}.tools-section{background:#e8eee4}.tool-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.tool-cards article{position:relative;min-height:265px;padding:35px;background:var(--forest);color:white;border-radius:11px}.tool-cards article:nth-child(2){background:#435d45}.tool-icon{color:#efb887;font-size:13px;letter-spacing:.16em;font-weight:800}.tool-cards h3{font-size:34px;margin:32px 0 12px}.tool-cards p{color:#dbe9dc;max-width:420px}.tool-cards a{display:inline-block;color:#f7ca9f;font-weight:800;margin-top:14px}.guide-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.guide-card{min-height:300px;padding:25px;background:var(--paper);border:1px solid var(--line);display:flex;flex-direction:column}.guide-card:hover{box-shadow:var(--shadow)}.card-number{font-size:11px;letter-spacing:.16em;font-weight:800;color:#ae704b}.guide-card h3{font-size:23px;margin:25px 0 10px}.guide-card h3 a{text-decoration:none}.guide-card p{font-size:14px;color:var(--muted);margin:0 0 24px}.card-link{margin-top:auto;font-size:13px;font-weight:800;text-decoration:none}.source-note{display:flex;align-items:center;gap:20px;margin-bottom:80px;padding:23px 28px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.source-note p{flex:1;color:var(--muted)}.source-note a{font-weight:800;white-space:nowrap}.site-footer{background:var(--deep);color:white;padding:55px 0 22px}.footer-inner{display:flex;justify-content:space-between;gap:50px}.footer-inner>div{max-width:430px}.footer-inner strong{font:700 26px Georgia,serif}.footer-inner p,.footer-bottom{color:#bfcfc3}.footer-inner nav{display:flex;flex-wrap:wrap;gap:12px 22px;max-width:430px}.footer-inner nav a{color:#d9e5d7;font-size:13px}.footer-bottom{border-top:1px solid #385247;margin-top:40px;padding-top:20px;font-size:12px}.crumb{font-size:13px;margin:38px 0;color:var(--muted)}.crumb a{font-weight:700}.article-layout{display:grid;grid-template-columns:minmax(0,730px) minmax(210px,300px);gap:75px;padding-bottom:90px}.article-head{border-bottom:1px solid var(--line);padding-bottom:34px;margin-bottom:35px}.article-head h1,.tool-head h1,.info-page h1{font-size:clamp(38px,4.5vw,61px);margin:12px 0 18px}.article-head .lead,.tool-head .lead,.info-page .lead{color:#506459}.byline{font-size:13px;color:var(--muted)}.prose{font-size:17px;line-height:1.8}.prose-section{margin-bottom:34px}.prose h2{font-size:28px;margin:0 0 13px}.prose p{margin:0}.example,.pitfall{padding:25px 29px;margin:33px 0;background:#e8eee4;border-left:4px solid #5d886d}.example p,.pitfall p{margin-top:9px}.pitfall{background:#fff0e5;border-color:var(--orange)}.pitfall strong{font-size:14px}.references{border-top:1px solid var(--line);margin-top:44px;padding-top:28px}.source-list{padding-left:19px;font-size:15px}.source-list li{margin:10px 0}.next-guide{border-top:1px solid var(--line);margin-top:45px;padding-top:24px}.next-guide span{display:block;font-size:12px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);margin-bottom:8px}.next-guide a{font-weight:800}.article-aside{padding-top:100px}.aside-panel{padding:27px;background:var(--paper);border:1px solid var(--line);margin-bottom:18px}.aside-panel h2{font-size:23px}.aside-panel p{font-size:14px;color:var(--muted)}.aside-panel a{display:block;margin-top:12px;font-size:14px;font-weight:800}.tool-page,.info-page{padding-bottom:90px}.tool-head{max-width:810px;margin-bottom:34px}.calculator-grid{display:grid;grid-template-columns:1.25fr .85fr;gap:20px}.calculator-grid form{background:var(--paper);padding:28px;border:1px solid var(--line)}.fields{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.field{display:grid;gap:8px;font-size:13px;font-weight:800}.field input{width:100%;min-height:48px;padding:10px 13px;border:1px solid #b8c6b8;border-radius:5px;background:white;font:16px system-ui;color:var(--ink)}.field input:focus{outline:3px solid #add2ac}.calculator-grid form .button{margin-top:24px}.result-panel{background:var(--forest);border-radius:8px;color:white;padding:30px;min-height:300px}.result-panel .eyebrow{color:#edbb94}.result-panel>strong{display:block;font:700 clamp(34px,4vw,54px) Georgia,serif;margin:22px 0}.result-panel>p{color:#dce8dc;font-size:14px}.result-rows{border-top:1px solid #49685b}.result-row{display:flex;justify-content:space-between;gap:14px;border-bottom:1px solid #49685b;padding:11px 0;font-size:13px}.result-row b{white-space:nowrap}.tool-explain{display:grid;grid-template-columns:repeat(2,1fr);gap:45px;margin-top:45px}.tool-explain section{border-top:1px solid var(--line);padding-top:19px}.tool-explain h2{font-size:24px}.tool-explain p{color:var(--muted)}.tool-explain a{font-weight:800}.info-page{max-width:850px}.info-page .prose{margin-top:40px}.info-page .lead{margin-bottom:0}@media(max-width:950px){.header-inner{flex-wrap:wrap;padding-block:15px}.site-header nav{order:3;width:100%;justify-content:space-between;border-top:1px solid var(--line);padding-top:10px}.hero-grid{gap:25px}.guide-grid{grid-template-columns:repeat(2,1fr)}.article-layout{grid-template-columns:1fr;gap:0}.article-aside{padding-top:0;display:grid;grid-template-columns:repeat(2,1fr);gap:16px}}@media(max-width:680px){.wrap{width:min(100% - 30px,1160px)}.hero-grid{grid-template-columns:1fr;padding-block:46px;gap:35px}.hero h1{font-size:45px}.plan-art{min-height:280px;padding:24px}.plan-room{height:180px;margin-top:29px}.plan-room span{font-size:34px}.plan-top{top:25px}.note-band,.tool-cards,.calculator-grid,.tool-explain{grid-template-columns:1fr}.note-band{gap:5px;padding:25px}.section{padding-block:58px}.steps ol,.guide-grid{grid-template-columns:1fr}.steps li{min-height:140px}.guide-card{min-height:230px}.source-note{align-items:flex-start;flex-direction:column;gap:0}.footer-inner{flex-direction:column;gap:25px}.fields{grid-template-columns:1fr}.article-aside{grid-template-columns:1fr}.article-head h1,.tool-head h1,.info-page h1{font-size:40px}.site-header nav{gap:9px}.site-header nav a{font-size:11px}.brand-words strong{font-size:12px}.brand-words small{font-size:8px}}
