@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Libre+Caslon+Display&display=swap');
:root{--paper:#f5f1e8;--ink:#242922;--muted:#62655b;--gold:#b59858;--line:#d7d2c4;--dark:#202820;--white:#fffdf7}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.7 'DM Sans',Arial,sans-serif}a{color:inherit;text-underline-offset:5px}a:hover{color:#80652f}button,a{-webkit-tap-highlight-color:transparent}a:focus-visible{outline:3px solid #a87920;outline-offset:5px}img{display:block;max-width:100%;height:auto}p{margin:0 0 1.3em}h1,h2,h3{font-weight:400;line-height:1.1}h1,h2{font-family:'Libre Caslon Display',Georgia,serif}h1{font-size:clamp(48px,5.7vw,84px);letter-spacing:-.035em;margin:20px 0 28px}h2{font-size:38px;margin:0 0 22px}h3{font-size:22px}::selection{background:#dacc9c}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:16px;top:12px;background:white;padding:12px;z-index:5}.site-header{border-bottom:1px solid var(--line)}.header-inner{max-width:1440px;margin:auto;padding:27px 6%;display:flex;justify-content:space-between;align-items:center;gap:24px}.brand{font:600 22px/1.2 Georgia,serif;text-decoration:none;letter-spacing:.04em;white-space:nowrap}.brand small{display:block;font:10px/1.5 'DM Sans',Arial,sans-serif;letter-spacing:.15em;margin-top:7px}.nav{display:flex;align-items:center;gap:30px;font-size:14px}.nav a{text-decoration:none}.nav-book{border-bottom:1px solid var(--gold);padding:10px 0}.nav-book span{margin-left:18px}.hero{border-bottom:1px solid var(--line)}.hero-inner{max-width:1440px;margin:auto;padding:80px 6% 88px;display:grid;grid-template-columns:1.5fr .8fr;align-items:center;gap:70px}.eyebrow{font-size:12px;font-weight:600;letter-spacing:.14em;line-height:1.6;text-transform:uppercase;margin:0 0 20px}.eyebrow span{font-weight:400}.deck{font-size:19px;line-height:1.65;color:var(--muted);max-width:640px}.text-link{display:inline-block;font-size:15px;font-weight:600;text-decoration:none;border-bottom:1px solid var(--gold);padding:8px 0}.text-link span{margin-left:15px}.hero-note{position:relative;overflow:hidden;background:var(--dark);color:var(--paper);padding:40px 34px 30px;border-top:3px solid var(--gold)}.hero-note .eyebrow{color:#d5c38e;font-size:11px;max-width:230px;position:relative}.hero-note h2{font-size:37px;position:relative;margin:36px 0 22px}.hero-note>p:not(.eyebrow){font-size:16px;color:#d0d5ca;position:relative}.note-mark{position:absolute;right:12px;top:-72px;font:300px Georgia,serif;color:#354034}.note-rule{height:1px;background:#515747;margin:28px 0 16px}.note-label{font-size:10px;letter-spacing:.2em;color:#d5c38e}.guide{max-width:1300px;margin:auto;padding:84px 6% 90px;display:grid;grid-template-columns:250px minmax(0,1fr);gap:72px;align-items:start}.contents{position:sticky;top:28px}.contents>.eyebrow{color:var(--muted);font-size:11px}.contents a{display:block;font-size:14px;line-height:1.5;text-decoration:none;padding:14px 0;border-top:1px solid var(--line)}.contents a span{display:block;font-size:10px;color:#8c7442;letter-spacing:.12em;margin-bottom:6px}.contents .contents-book{margin-top:20px;border:0;font-weight:600}.article-intro{padding-bottom:30px}.article-intro .eyebrow{font-size:11px;color:#77633a}.article-intro h2{font-size:46px}.qa{display:grid;grid-template-columns:34px 1fr;gap:18px;border-top:1px solid var(--line);padding:32px 0 24px;scroll-margin-top:28px}.qa h2{font-size:30px;line-height:1.18}.qa p{font-size:17px;color:#51564b;line-height:1.8}.question-number{font-size:12px;letter-spacing:.12em;color:#8c7442;margin-top:5px}.field-images{margin:20px 0 44px;display:grid;gap:24px}.field-figure{margin:0}.field-figure a{display:block}.field-figure img{width:100%;max-height:470px;object-fit:contain;background:#e7e4db}.field-figure figcaption,figcaption{font-size:13px;line-height:1.65;color:var(--muted);padding:14px 0}.image-hint{display:block;margin-top:6px;font-size:12px}.principle{margin:12px 0 36px;padding:30px;background:#e9e3d4;border-left:3px solid var(--gold)}.principle h2{font-size:32px}.principle p:last-child{margin:0;font-size:16px}.next-step{border-top:1px solid var(--line);margin-top:20px;padding-top:30px}.next-step>p:not(.eyebrow){font-family:'Libre Caslon Display',Georgia,serif;font-size:30px;line-height:1.3}.book-band{background:var(--dark);color:var(--paper);display:grid;grid-template-columns:.9fr 1.1fr;gap:7%;padding:76px max(6%,calc((100vw - 1260px)/2));align-items:center}.book-visual{text-align:center;align-self:center}.book-visual .eyebrow{color:#d5c38e;margin-bottom:26px}.book-art{width:100%;max-width:440px;margin:auto}.book-copy>.eyebrow{color:#d5c38e;font-size:11px}.book-copy h2{font-size:clamp(48px,5vw,70px);margin:18px 0 15px}.book-copy h2 em{font-style:normal;color:#d8c58f}.book-subtitle{font-family:Georgia,serif;font-size:18px}.author{margin:24px 0 28px;padding-bottom:24px;border-bottom:1px solid #515747}.author>span{display:block;font-size:16px}.author small{display:block;font-size:12px;line-height:1.7;color:#d3caa9;margin-top:6px;max-width:430px}.book-copy>p{font-size:16px;color:#d0d5ca}.book-copy .book-bridge{font-size:20px;color:var(--paper);line-height:1.5}.book-uses{list-style:none;padding:0;margin:25px 0 32px;font-size:14px}.book-uses li{padding:10px 0;border-bottom:1px solid #515747;display:flex;gap:18px;justify-content:space-between}.book-uses strong{font-weight:500;white-space:nowrap;color:#e4d4a5}.book-uses span{color:#c4cbbd}.ctas{display:flex;gap:12px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;padding:14px 20px;font-size:14px;font-weight:500;line-height:1.5;border:1px solid #6e7567;min-height:49px}.btn.primary{background:#dac691;color:#202820;border-color:#dac691}.btn.secondary{color:#f5f1e8}.btn:hover{background:#f0dfb3;color:#202820}.btn span{margin-left:18px}.book-copy>.text-link{color:#e4d4a5;margin-top:20px}.related{max-width:1260px;margin:auto;padding:80px 6%}.related h2{font-size:42px}.related-links{display:grid;grid-template-columns:1fr 1fr;gap:0 45px}.related-links a{position:relative;text-decoration:none;border-top:1px solid var(--line);padding:22px 28px 22px 0;font-size:16px;line-height:1.5}.related-links a:after{content:'↗';position:absolute;right:0;top:23px;color:#80652f}.footer{border-top:1px solid var(--line);padding:40px 6%;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}.footer .brand{font-size:18px}.footer p{margin:0;font-size:13px;color:var(--muted)}.footer nav{display:flex;gap:22px;font-size:13px}.footer small{font-size:11px;color:var(--muted)}
/* The roof field investigation uses the same editorial system while retaining its evidence. */
.roof-hero{max-width:1440px;margin:auto;padding:70px 6%;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.roof-hero h1{font-size:clamp(48px,5.3vw,76px)}.hero-image{margin:0}.hero-image img{width:100%;height:auto}.roof-article{max-width:1000px;padding:65px 5% 30px;margin:auto}.roof-article h2{margin:38px 0 20px;font-size:38px}.opening{font-size:21px;line-height:1.65}.question{margin:40px 0;padding:30px 35px;border-left:3px solid var(--gold);background:#e9e3d4;font:29px/1.4 'Libre Caslon Display',Georgia,serif}.pair{display:grid;grid-template-columns:1fr 1fr;gap:25px;margin:35px 0}.pair figure{margin:0}.pair img{width:100%;height:auto}.analysis{padding:20px 30px;background:#ebe6da;margin:40px 0}.analysis h2{margin-top:12px}.analysis ol{padding-left:22px}.analysis li{padding-left:8px;margin-bottom:20px}.finding{border-top:1px solid var(--gold);border-bottom:1px solid var(--gold);padding:28px 0;font-size:19px}.mission{display:grid;grid-template-columns:1fr 1fr;gap:25px}.mission article{border-top:1px solid var(--line);padding:10px 0}.mission h3{font-family:Georgia,serif;line-height:1.3}.mission p{font-size:16px;color:var(--muted)}.pending{margin:35px 0;padding:15px 30px;background:var(--dark);color:var(--paper);border-top:3px solid var(--gold)}.pending h2{margin-top:20px}.excerpt{margin:40px 0;padding:30px 0;border-top:1px solid var(--line)}.excerpt .label{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:#80652f}.excerpt blockquote{margin:25px 0;font:25px/1.5 'Libre Caslon Display',Georgia,serif}.excerpt cite{display:block;font-size:14px;font-style:normal;color:var(--muted)}.excerpt .rule{padding:20px 0;border-top:1px solid var(--line)}.share{border-top:1px solid var(--line);padding:25px 0;font-size:14px}.share a{font-weight:600}.roof-page .book-band{margin-top:30px}
@media(min-width:1500px){.book-band{padding-left:calc((100vw - 1140px)/2);padding-right:calc((100vw - 1140px)/2)}}
@media(max-width:1000px){.hero-inner{gap:35px;padding-top:55px;padding-bottom:60px;grid-template-columns:1.3fr 1fr}.hero-note{padding:28px}.hero-note h2{font-size:31px}.guide{gap:38px;grid-template-columns:200px minmax(0,1fr);padding-top:60px}.nav{gap:18px}.book-band{gap:35px}.book-uses li{display:block}.book-uses span{display:block;margin-top:3px}}
@media(max-width:720px){body{font-size:16px}.header-inner{padding:20px 6%;align-items:flex-start;flex-direction:column;gap:18px}.brand{font-size:20px}.nav{width:100%;justify-content:space-between;gap:12px;font-size:12px}.nav-book span{margin-left:5px}.hero-inner{display:block;padding:40px 6%}.hero .eyebrow{font-size:10px;letter-spacing:.1em}h1{font-size:48px;line-height:1.04;margin:20px 0 25px}.deck{font-size:17px}.hero-note{margin-top:38px;padding:28px}.hero-note h2{font-size:34px;max-width:320px;margin:20px 0}.hero-note>p:not(.eyebrow){font-size:16px}.note-mark{right:12px;top:-65px}.guide{display:block;padding:42px 6%}.contents{position:static;margin-bottom:40px}.contents a:not(.contents-book){display:none}.contents>.eyebrow{display:none}.contents .contents-book{margin:0;padding:14px 0;border-bottom:1px solid var(--line);border-top:1px solid var(--line)}.article-intro h2{font-size:38px}.qa{grid-template-columns:25px 1fr;gap:10px;padding:26px 0 18px}.qa h2{font-size:28px}.qa p{font-size:16px}.field-figure figcaption{font-size:12px}.book-band{display:flex;flex-direction:column;padding:45px 6%;gap:36px}.book-art{max-width:280px}.book-copy h2{font-size:54px}.book-copy>.eyebrow{font-size:10px}.book-visual>.eyebrow{font-size:10px}.author small{font-size:12px}.ctas{flex-direction:column}.btn{width:100%;font-size:14px}.related{padding:45px 6%}.related h2{font-size:36px}.related-links{grid-template-columns:1fr}.related-links a{font-size:15px}.footer{padding:30px 6%;flex-direction:column;align-items:flex-start}.roof-hero{grid-template-columns:1fr;padding:40px 6%;gap:30px}.roof-hero h1{font-size:48px}.roof-article{padding:40px 6% 10px}.roof-article h2{font-size:32px}.opening{font-size:19px}.pair,.mission{grid-template-columns:1fr}.question{padding:24px;font-size:26px;margin:30px 0}.analysis,.pending{padding:18px 22px}.excerpt blockquote{font-size:24px}.principle{padding:24px}.principle h2{font-size:28px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}