@import"https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Fraunces:opsz,wght@9..144,600;9..144,700&family=Manrope:wght@400;500;600;700;800&display=swap";:root{--paper: #f4efe6;--paper-deep: #e8dfd0;--ink: #21323a;--ink-soft: #526168;--navy: #233e49;--navy-deep: #182e38;--copper: #bd6845;--copper-light: #d78c62;--teal: #5d8983;--teal-deep: #3f6b68;--ochre: #d1ae46;--line: #cfc4b3;--white-ink: #f6f0e5;--display: "Fraunces", Georgia, serif;--sans: "Manrope", sans-serif;--mono: "DM Mono", monospace;--radius: 3px;--max: 1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.65;font-size:16px}body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.16;z-index:20;background-image:radial-gradient(rgba(32,44,47,.34) .55px,transparent .55px);background-size:5px 5px;mix-blend-mode:multiply}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button{font:inherit}.site-header{position:sticky;top:0;z-index:15;border-bottom:1px solid var(--line);background:#f4efe6ed;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.header-inner{max-width:var(--max);margin:0 auto;min-height:76px;padding:0 28px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}.brand-mark{width:37px;height:37px;display:grid;place-items:center;border:2px solid var(--copper);color:var(--copper);font-family:var(--mono);font-weight:500;font-size:13px;letter-spacing:-.08em;position:relative}.brand-mark:after{content:"";position:absolute;right:-5px;bottom:-5px;width:9px;height:9px;background:var(--ochre);border:2px solid var(--paper)}.brand-name{font-weight:800;letter-spacing:-.045em;font-size:18px}.brand-name span{color:var(--copper)}.main-nav{display:flex;align-items:center;gap:26px}.main-nav a{color:var(--ink-soft);font-size:13px;font-weight:700;letter-spacing:.01em;position:relative;padding:27px 0 25px}.main-nav a:after{content:"";height:2px;position:absolute;left:0;right:100%;bottom:18px;background:var(--copper);transition:right .25s ease}.main-nav a:hover,.main-nav a[aria-current=page]{color:var(--ink)}.main-nav a:hover:after,.main-nav a[aria-current=page]:after{right:0}.header-note{color:var(--ink-soft);font-family:var(--mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase}.menu-toggle{display:none;border:0;background:transparent;color:var(--ink);padding:8px;cursor:pointer}.menu-toggle span{display:block;width:24px;height:2px;background:currentColor;margin:5px 0}.wrap{max-width:var(--max);margin:0 auto;padding:0 28px}.eyebrow{color:var(--copper);font-family:var(--mono);text-transform:uppercase;letter-spacing:.14em;font-size:10px;font-weight:500}.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:38px}.section-head h2{margin:7px 0 0;font-family:var(--display);font-size:clamp(32px,4vw,55px);line-height:1.02;letter-spacing:-.04em}.section-head p{max-width:360px;margin:0;color:var(--ink-soft);font-size:14px}.display{font-family:var(--display);letter-spacing:-.04em}.mono{font-family:var(--mono)}.muted{color:var(--ink-soft)}.hero{border-bottom:1px solid var(--line);padding:76px 0 82px;overflow:hidden}.hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(340px,.9fr);gap:72px;align-items:center}.hero h1{max-width:760px;font-family:var(--display);font-size:clamp(52px,7.3vw,98px);line-height:.93;letter-spacing:-.065em;margin:17px 0 25px;font-weight:600}.hero h1 em{color:var(--copper);font-style:normal}.hero-copy{max-width:520px;color:var(--ink-soft);font-size:17px}.hero-actions{display:flex;align-items:center;gap:20px;margin-top:34px}.button{display:inline-flex;align-items:center;gap:11px;background:var(--navy);color:var(--white-ink);padding:13px 18px;font-weight:700;font-size:13px;border:1px solid var(--navy);transition:transform .25s ease,background-color .25s ease,color .25s ease}.button:hover{transform:translateY(-2px);background:var(--copper);border-color:var(--copper)}.text-link{color:var(--ink);font-size:13px;font-weight:800;border-bottom:1px solid var(--copper);padding-bottom:3px}.text-link:after{content:"  →";color:var(--copper)}.instrument{background:var(--navy);color:var(--white-ink);min-height:405px;padding:28px;position:relative;overflow:hidden;box-shadow:13px 13px 0 var(--paper-deep)}.instrument:before,.instrument:after{content:"";position:absolute;border-radius:50%;border:1px solid rgba(246,240,229,.16)}.instrument:before{width:340px;height:340px;right:-120px;top:56px}.instrument:after{width:230px;height:230px;right:-65px;top:111px}.instrument-label{display:flex;justify-content:space-between;color:#b9c8c3;font-family:var(--mono);font-size:10px;text-transform:uppercase;letter-spacing:.12em;position:relative;z-index:1}.dial{width:245px;height:245px;margin:28px auto 16px;border-radius:50%;border:2px solid #a9b8b0;position:relative;display:grid;place-items:center}.dial:before{content:"";position:absolute;inset:14px;border-radius:50%;border:1px dashed rgba(246,240,229,.4)}.dial:after{content:"";position:absolute;width:2px;height:98px;background:var(--copper-light);left:50%;bottom:50%;transform-origin:bottom;transform:rotate(42deg)}.dial-value{text-align:center;position:relative;z-index:2}.dial-value strong{display:block;color:var(--copper-light);font-family:var(--display);font-size:57px;line-height:.9;font-weight:600}.dial-value small{color:#b9c8c3;font-family:var(--mono);font-size:9px;letter-spacing:.08em;text-transform:uppercase}.tick{position:absolute;width:5px;height:1px;background:var(--ochre);top:50%;left:50%;transform-origin:0 0}.tick.t1{transform:rotate(-135deg) translate(100px)}.tick.t2{transform:rotate(-90deg) translate(100px)}.tick.t3{transform:rotate(-45deg) translate(100px)}.tick.t4{transform:rotate(0) translate(100px)}.tick.t5{transform:rotate(45deg) translate(100px)}.tick.t6{transform:rotate(90deg) translate(100px)}.tick.t7{transform:rotate(135deg) translate(100px)}.instrument-foot{border-top:1px solid rgba(246,240,229,.18);padding-top:13px;display:flex;justify-content:space-between;position:relative;z-index:2;color:#b9c8c3;font-family:var(--mono);font-size:10px}.signal-strip{background:var(--copper);color:var(--white-ink)}.signal-grid{display:grid;grid-template-columns:1.1fr repeat(3,1fr)}.signal-grid>*{padding:25px 24px;border-right:1px solid rgba(246,240,229,.25)}.signal-grid>*:last-child{border-right:0}.signal-intro{font-family:var(--display);font-size:22px;line-height:1.1}.signal-card strong{display:block;font-family:var(--display);font-size:20px;font-weight:600;margin-bottom:2px}.signal-card span{font-family:var(--mono);text-transform:uppercase;letter-spacing:.09em;font-size:9px;opacity:.82}.section{padding:104px 0}.feature{background:var(--navy-deep);color:var(--white-ink)}.feature-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:74px;align-items:start}.feature .eyebrow{color:var(--copper-light)}.feature h2{font-size:clamp(37px,4.7vw,63px);line-height:.98;margin:12px 0 20px}.feature p{color:#bdc8c4;max-width:430px}.chapter-mark{font-family:var(--mono);font-size:12px;color:var(--copper-light);border:1px solid rgba(215,140,98,.5);width:54px;height:54px;display:grid;place-items:center;margin-bottom:36px}.guide-card{border-top:1px solid rgba(246,240,229,.25);padding-top:22px;display:grid;grid-template-columns:1fr 1fr;gap:36px}.guide-card h3{font-family:var(--display);font-size:34px;line-height:1.08;margin:0;font-weight:600}.guide-card p{margin:0;font-size:14px}.list-check{list-style:none;margin:30px 0 0;padding:0;display:grid;gap:12px}.list-check li{color:#d3dbd6;font-size:13px;display:flex;gap:12px}.list-check li:before{content:"—";color:var(--copper-light);font-family:var(--mono)}.method{background:var(--paper-deep)}.method-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.method-step{padding:27px 23px 31px;border-right:1px solid var(--line);min-height:190px}.method-step:last-child{border-right:0}.method-step .number{color:var(--copper);font-family:var(--mono);font-size:11px}.method-step h3{font-size:17px;margin:24px 0 9px;letter-spacing:-.03em}.method-step p{color:var(--ink-soft);font-size:13px;line-height:1.5;margin:0}.maint-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:72px}.maint-intro h2{font-size:clamp(35px,4.4vw,59px);line-height:.98;margin:11px 0 20px}.maint-intro p{color:var(--ink-soft);max-width:390px}.intervals{border-top:1px solid var(--line)}.interval{display:grid;grid-template-columns:1fr 1.3fr auto;gap:18px;align-items:center;padding:19px 0;border-bottom:1px solid var(--line)}.interval strong{font-size:14px}.interval span{color:var(--ink-soft);font-size:13px}.interval .mono{color:var(--copper);font-size:11px}.latest{background:var(--teal-deep);color:var(--white-ink)}.latest .eyebrow{color:#e0c477}.latest .section-head p{color:#c6d4ce}.latest-grid{display:grid;grid-template-columns:1.25fr .75fr .75fr;gap:18px}.article-tile{display:flex;flex-direction:column;min-height:280px;padding:24px;border:1px solid rgba(246,240,229,.27);transition:transform .25s ease,background-color .25s ease}.article-tile:hover{transform:translateY(-4px);background:#f6f0e514}.article-tile.primary{min-height:350px;background:var(--paper);color:var(--ink);border:0}.article-tile .tile-meta{font-family:var(--mono);font-size:10px;opacity:.75;letter-spacing:.08em;text-transform:uppercase}.article-tile h3{font-family:var(--display);font-size:27px;line-height:1.04;margin:18px 0 12px}.article-tile.primary h3{font-size:38px}.article-tile p{font-size:13px;color:inherit;opacity:.75;margin:0}.tile-bottom{margin-top:auto;padding-top:25px;font-size:12px;font-weight:800}.notebook-note{border-left:3px solid var(--ochre);padding:4px 0 4px 22px;max-width:620px;margin:0 auto;color:var(--ink-soft);font-size:14px}.notebook-note strong{color:var(--ink)}.page-hero{background:var(--navy);color:var(--white-ink);padding:76px 0 72px}.page-hero .eyebrow{color:var(--copper-light)}.page-hero h1{font-family:var(--display);font-size:clamp(51px,7vw,84px);line-height:.95;max-width:800px;margin:16px 0 17px;letter-spacing:-.06em}.page-hero p{color:#c6d2cd;max-width:590px;margin:0;font-size:17px}.breadcrumbs{padding-top:20px;color:var(--ink-soft);font-family:var(--mono);font-size:10px;letter-spacing:.06em;text-transform:uppercase}.breadcrumbs a{color:var(--copper)}.guides-layout{display:grid;grid-template-columns:210px 1fr;gap:58px;align-items:start}.side-index{position:sticky;top:110px}.side-index strong{display:block;font-size:12px;text-transform:uppercase;letter-spacing:.1em;margin-bottom:16px}.side-index a{display:block;padding:8px 0;color:var(--ink-soft);border-bottom:1px solid var(--line);font-size:13px}.side-index a:hover{color:var(--copper)}.guide-list{display:grid;gap:20px}.guide-row{display:grid;grid-template-columns:116px 1fr 22px;gap:25px;align-items:start;border-top:1px solid var(--line);padding:25px 0}.guide-row .row-number{color:var(--copper);font-family:var(--mono);font-size:11px}.guide-row h2{font-family:var(--display);font-size:32px;line-height:1.04;margin:-5px 0 8px;font-weight:600}.guide-row p{color:var(--ink-soft);font-size:14px;max-width:580px;margin:0}.guide-row .arrow{color:var(--copper);font-size:24px;transition:transform .25s ease}.guide-row:hover .arrow{transform:translate(5px)}.tag{display:inline-block;font-family:var(--mono);text-transform:uppercase;letter-spacing:.09em;font-size:9px;color:var(--teal-deep);border:1px solid var(--teal);padding:4px 7px;margin-top:14px}.article-layout{display:grid;grid-template-columns:minmax(0,680px) 210px;gap:74px;justify-content:center}.article-meta{font-family:var(--mono);color:var(--copper);font-size:10px;text-transform:uppercase;letter-spacing:.1em}.article-title{font-family:var(--display);font-size:clamp(44px,6vw,74px);line-height:.96;letter-spacing:-.06em;margin:15px 0 20px}.article-dek{font-size:19px;line-height:1.5;color:var(--ink-soft);margin-bottom:34px}.article-content{font-size:17px}.article-content h2{font-family:var(--display);font-size:32px;line-height:1.05;margin:55px 0 13px}.article-content h3{font-size:18px;margin:31px 0 8px}.article-content p{margin:0 0 20px}.article-content ul,.article-content ol{padding-left:24px;margin:16px 0 25px}.article-content li{margin-bottom:9px}.callout{margin:34px 0;padding:23px 26px;border-left:3px solid var(--copper);background:var(--paper-deep);font-size:15px}.callout strong{display:block;font-family:var(--mono);font-size:10px;color:var(--copper);letter-spacing:.1em;text-transform:uppercase;margin-bottom:7px}.callout.danger{border-left-color:#b44632;background:#f0ddd2}.callout.danger strong{color:#963624}.article-toc{position:sticky;top:110px;font-size:12px}.article-toc strong{display:block;font-family:var(--mono);color:var(--copper);font-size:10px;text-transform:uppercase;letter-spacing:.1em;margin-bottom:14px}.article-toc a{display:block;color:var(--ink-soft);padding:7px 0;border-bottom:1px solid var(--line);line-height:1.3}.article-toc a:hover{color:var(--copper)}.spec-table{width:100%;border-collapse:collapse;margin:25px 0 30px;font-size:14px}.spec-table th,.spec-table td{text-align:left;padding:12px 9px;border-bottom:1px solid var(--line)}.spec-table th{font-family:var(--mono);text-transform:uppercase;font-size:10px;letter-spacing:.08em;color:var(--copper)}.about-grid,.legal-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:85px;align-items:start}.about-grid h2,.legal-grid h2{font-family:var(--display);font-size:40px;line-height:1.02;margin:0 0 16px}.about-main{font-size:18px}.about-main p{margin-top:0;margin-bottom:22px}.principles{border-top:1px solid var(--line)}.principle{display:grid;grid-template-columns:40px 1fr;border-bottom:1px solid var(--line);padding:20px 0;gap:14px}.principle span{color:var(--copper);font-family:var(--mono);font-size:11px}.principle h3{font-size:16px;margin:0 0 5px}.principle p{margin:0;color:var(--ink-soft);font-size:14px}.contact-card{border:1px solid var(--line);background:var(--paper-deep);padding:29px}.contact-card h2{margin-top:0;font-size:31px}.contact-card a{color:var(--copper);font-weight:800;border-bottom:1px solid var(--copper);word-break:break-word}.legal-copy{max-width:760px}.article-next{margin-top:45px;padding-top:22px;border-top:1px solid var(--line)}.article-next a{color:var(--copper);font-weight:800}.legal-main{max-width:730px}.legal-main h2{font-size:28px;margin-top:40px}.legal-main p,.legal-main li{font-size:14px;color:var(--ink-soft)}.site-footer{background:var(--navy-deep);color:var(--white-ink);padding:54px 0 27px}.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:50px;padding-bottom:48px;border-bottom:1px solid rgba(246,240,229,.2)}.footer-brand p{color:#b6c6c0;font-size:13px;max-width:310px;margin-top:17px}.footer-title{font-family:var(--mono);color:var(--copper-light);font-size:10px;text-transform:uppercase;letter-spacing:.12em;margin:4px 0 14px}.footer-links{display:grid;gap:7px;font-size:13px;color:#c4cfca}.footer-links a:hover{color:var(--copper-light)}.footer-disclaimer{max-width:970px;padding:22px 0 0;margin:0;color:#b6c6c0;font-size:12px;line-height:1.65}.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:22px;color:#8fa49e;font-family:var(--mono);font-size:9px;text-transform:uppercase;letter-spacing:.07em}.reveal{opacity:0;transform:translateY(18px);transition:opacity .65s ease,transform .65s ease}.reveal.is-visible{opacity:1;transform:translateY(0)}.delay-1{transition-delay:.1s}.delay-2{transition-delay:.2s}.delay-3{transition-delay:.3s}@media(max-width:850px){.header-note{display:none}.main-nav{gap:17px}.hero-grid,.maint-grid,.about-grid,.legal-grid{grid-template-columns:1fr;gap:48px}.hero{padding:58px 0 68px}.hero h1{font-size:clamp(52px,13vw,84px)}.feature-grid{grid-template-columns:1fr;gap:38px}.latest-grid{grid-template-columns:1fr 1fr}.article-tile.primary{grid-column:1 / -1}.guides-layout{grid-template-columns:1fr;gap:30px}.side-index{position:static;display:flex;gap:16px;align-items:center;overflow-x:auto}.side-index strong{margin:0;white-space:nowrap}.side-index a{white-space:nowrap;border:0;padding:6px 0}}@media(max-width:650px){.header-inner{min-height:66px;padding:0 18px}.wrap{padding:0 18px}.menu-toggle{display:block}.main-nav{display:none;position:absolute;top:66px;left:0;right:0;padding:12px 18px 20px;background:var(--paper);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0}.main-nav.is-open{display:flex}.main-nav a{padding:12px 0;border-bottom:1px solid var(--line)}.main-nav a:after{bottom:-1px}.signal-grid{grid-template-columns:1fr 1fr}.signal-grid>*{padding:18px 16px}.signal-intro{grid-column:1 / -1}.section{padding:72px 0}.section-head{display:block;margin-bottom:28px}.section-head p{margin-top:15px}.instrument{min-height:360px;padding:22px}.dial{width:210px;height:210px}.dial:after{height:84px}.method-grid{grid-template-columns:1fr 1fr}.method-step:nth-child(2){border-right:0}.method-step:nth-child(-n+2){border-bottom:1px solid var(--line)}.method-step{min-height:205px;padding:20px 16px}.guide-card{grid-template-columns:1fr;gap:12px}.latest-grid{grid-template-columns:1fr}.article-tile.primary{grid-column:auto}.footer-top{grid-template-columns:1fr 1fr;gap:35px 22px}.footer-brand{grid-column:1 / -1}.footer-bottom{display:block;line-height:1.8}.footer-bottom span{display:block}.page-hero{padding:56px 0 58px}.article-layout{grid-template-columns:1fr;gap:35px}.article-toc{position:static;order:-1;display:flex;gap:14px;overflow-x:auto;align-items:baseline}.article-toc strong{white-space:nowrap;margin:0}.article-toc a{border:0;white-space:nowrap}.guide-row{grid-template-columns:54px 1fr 18px;gap:13px}.guide-row h2{font-size:26px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}.reveal{opacity:1;transform:none}}