.seo-article{color:var(--color-ink);background:var(--color-paper);padding:8rem max(1.25rem,5vw) 5rem}.seo-article a{text-underline-offset:.25em}.seo-article a:focus-visible,.seo-article button:focus-visible,.seo-article summary:focus-visible{outline-offset:5px;outline:2px solid}.seo-article-header,.seo-article-layout{max-width:1280px;margin-inline:auto}.seo-article-header{border-bottom:1px solid var(--color-line);padding-bottom:3.5rem}.seo-article-header nav ol{color:var(--color-muted);flex-wrap:wrap;gap:.6rem;margin-bottom:2.75rem;font-size:.75rem;display:flex}.seo-article-header nav li+li:before{content:"/";opacity:.5;margin-right:.6rem}.seo-article-header nav a{text-decoration:underline}.seo-kicker{letter-spacing:.16em;text-transform:uppercase;color:var(--color-olive);margin-block:0 1rem;font-size:.65rem;font-weight:500}.seo-article h1,.seo-article h2,.seo-article h3{font-family:var(--font-display);text-wrap:balance;font-weight:400}.seo-article h1{max-width:20ch;margin-block:1rem 1.5rem;font-size:clamp(2.7rem,5.4vw,5rem);line-height:1.08}.seo-standfirst{max-width:65ch;color:var(--color-muted);font-size:1.1rem;line-height:1.8}.seo-byline{color:var(--color-muted);margin-top:1.5rem;font-size:.75rem}.seo-byline a{text-decoration:underline}.seo-article-actions{flex-wrap:wrap;gap:1.75rem;margin-top:1.75rem;font-size:.85rem;display:flex}.seo-article-actions a{border-bottom:1px solid var(--color-olive);padding-block:.75rem}.seo-review-notice{border:1px solid var(--color-line);margin-bottom:1.5rem;padding:.65rem .85rem;font-size:.75rem;display:inline-block}.seo-article-layout{grid-template-columns:230px minmax(0,1fr);gap:clamp(2rem,6vw,6rem);padding-top:3rem;display:grid}.seo-contents nav{position:sticky;top:6.5rem}.seo-contents ol{margin:0 0 1.25rem;padding:0;list-style:none}.seo-contents li{border-bottom:1px solid var(--color-line)}.seo-contents a{padding:.7rem 0;font-size:.8rem;line-height:1.6;display:block}.seo-contents a:hover{text-decoration:underline}.seo-article-body{min-width:0;max-width:860px}.seo-article-body h2{margin:0 0 1.25rem;font-size:clamp(1.9rem,3vw,2.65rem);line-height:1.2}.seo-article-body p,.seo-prose-section li{font-size:1rem;line-height:1.9}.seo-article-body p+p{margin-top:1.15rem}.seo-introduction{margin-top:1.6rem}.seo-quick-answer{background:var(--color-mist);border-left:3px solid var(--color-olive);padding:1.75rem 2rem}.seo-quick-answer h2{font-size:1.6rem}.seo-prose-section,.seo-questions,.seo-references,.seo-related,.seo-diagram,.seo-brief{margin-top:3.5rem;scroll-margin-top:6.5rem}.seo-prose-section{border-top:1px solid var(--color-line);padding-top:2.5rem}.seo-prose-section ul{margin-top:1.5rem;padding-left:1.3rem;list-style:outside}.seo-prose-section li+li{margin-top:.6rem}.seo-prose-section .seo-section-sources{color:var(--color-muted);margin-top:1.25rem;font-size:.72rem;line-height:1.8}.seo-section-sources a{text-decoration:underline}.seo-content-table{border:1px solid var(--color-line);margin-top:1.75rem;overflow-x:auto}.seo-content-table table{border-collapse:collapse;width:100%;font-size:.85rem;line-height:1.7}.seo-content-table caption{text-align:left;color:var(--color-muted);padding:.8rem 1rem;font-size:.75rem}.seo-content-table th,.seo-content-table td{text-align:left;border-top:1px solid var(--color-line);vertical-align:top;min-width:130px;padding:.85rem 1rem}.seo-content-table thead{background:var(--color-mist)}.seo-diagram{background:var(--color-olive);color:var(--color-paper);padding:2rem}.seo-diagram .seo-kicker{color:var(--color-paper);opacity:.75}.seo-diagram-steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:1.5rem;display:grid}.seo-diagram-steps li{border-top:1px solid #ffffff50;padding-top:1.25rem;position:relative}.seo-step-number{font-family:var(--font-display);opacity:.65;font-size:2rem}.seo-diagram h3{margin-block:.5rem;font-size:1.45rem;line-height:1.3}.seo-diagram .seo-diagram-steps p{font-size:.85rem;line-height:1.75}.seo-step-arrow{opacity:.65;margin-top:.65rem;font-size:1.5rem;display:block}.seo-diagram figcaption{opacity:.8;margin-top:1.5rem;font-size:.75rem;line-height:1.7}.seo-brief{border:1px solid var(--color-line);background:var(--color-mist);padding:2rem}.seo-article-body .seo-small{color:var(--color-muted);font-size:.75rem;line-height:1.7}.seo-tool-fields{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin-top:1.75rem;display:grid}.seo-tool-fields label span{margin-bottom:.5rem;font-size:.85rem;font-weight:500;display:block}.seo-tool-fields textarea{resize:vertical;width:100%;min-width:0;font:inherit;background:var(--color-paper);border:1px solid var(--color-line);border-radius:0;padding:.75rem;font-size:.85rem;line-height:1.6;display:block}.seo-tool-fields textarea:focus{outline:2px solid var(--color-olive);outline-offset:2px}.seo-tool-fields input[type=number]{background:var(--color-paper);border:1px solid var(--color-line);width:100%;min-height:44px;padding:.75rem;display:block}.seo-room-sketch{margin-top:1.5rem}.seo-room-sketch svg{width:100%;height:auto}.seo-room-sketch figcaption{flex-wrap:wrap;gap:1rem;font-size:.75rem;line-height:1.7;display:flex}.seo-brief fieldset{margin-top:1.75rem}.seo-brief legend{margin-bottom:.75rem;font-size:.9rem;font-weight:500}.seo-check{align-items:flex-start;gap:.7rem;min-height:44px;padding-block:.65rem;font-size:.85rem;line-height:1.65;display:flex}.seo-check input{width:18px;height:18px;accent-color:var(--color-olive);flex-shrink:0;margin-top:.25rem}.seo-tool-actions{flex-wrap:wrap;gap:.75rem;margin-block:1.5rem .7rem;display:flex}.seo-tool-actions button{border:1px solid var(--color-olive);cursor:pointer;min-height:44px;padding:.75rem 1rem;font-size:.85rem}.seo-tool-actions button:first-child{background:var(--color-olive);color:var(--color-paper)}.seo-brief details{margin-top:1rem;font-size:.8rem}.seo-brief summary{cursor:pointer;padding-block:.75rem}.seo-brief pre{white-space:pre-wrap;overflow-wrap:anywhere;background:var(--color-paper);margin-top:.75rem;padding:1rem;font-family:inherit;font-size:.8rem;line-height:1.7}.seo-questions details{border-bottom:1px solid var(--color-line);padding-block:1.25rem}.seo-questions summary{cursor:pointer;font-size:1rem;line-height:1.6}.seo-questions p{margin-top:1rem}.seo-related ul{grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem;display:grid}.seo-related li a{border:1px solid var(--color-line);justify-content:space-between;align-items:center;gap:1rem;min-height:70px;padding:1rem;font-size:.9rem;line-height:1.6;display:flex}.seo-related li a:hover{background:var(--color-mist)}.seo-references{border-top:1px solid var(--color-line);padding-top:2rem}.seo-references h2{font-size:1.7rem}.seo-references li{margin-top:1.25rem;scroll-margin-top:6rem}.seo-references a{overflow-wrap:anywhere;font-size:.85rem;text-decoration:underline}.seo-references p{color:var(--color-muted);margin-top:.4rem;font-size:.75rem;line-height:1.8}.seo-article-cta{border:1px solid var(--color-olive);margin-top:3rem;padding:2.25rem}.seo-article-cta a{border-bottom:1px solid;margin-top:1.5rem;padding-bottom:.5rem;display:inline-block}@media (max-width:850px){.seo-article-layout{grid-template-columns:1fr;gap:2rem}.seo-contents nav{position:static}.seo-contents ol{columns:2;column-gap:1.5rem}.seo-contents li{break-inside:avoid}.seo-article-header{padding-bottom:2rem}}@media (max-width:520px){.seo-article{padding-top:6.5rem}.seo-contents ol{columns:1}.seo-diagram-steps,.seo-tool-fields,.seo-related ul{grid-template-columns:1fr}.seo-quick-answer,.seo-diagram,.seo-brief,.seo-article-cta{padding:1.25rem}.seo-article-body p,.seo-prose-section li{font-size:.95rem}}@media print{.seo-contents,.seo-article-actions,.seo-tool-actions{display:none}.seo-article{padding:0}.seo-article-layout{display:block}.seo-diagram{color:#000;background:#fff;border:1px solid}}
.seo-landing{padding:7rem max(1.25rem,5vw) 5rem}.seo-landing-hero,.seo-landing-body,.seo-jump-links{max-width:1280px;margin-inline:auto}.seo-landing-hero nav ol{color:var(--color-muted);flex-wrap:wrap;gap:.55rem;margin-bottom:2rem;font-size:.72rem;line-height:1.6;display:flex}.seo-landing-hero nav li+li:before{content:"/";opacity:.55;margin-right:.55rem}.seo-landing-hero nav a{text-decoration:underline}.seo-hero-grid{grid-template-columns:1.15fr 1fr;align-items:center;gap:clamp(2rem,5vw,5rem);display:grid}.seo-hero-copy h1{max-width:19ch;margin-block:1rem 1.5rem;font-size:clamp(2.65rem,4.65vw,4.6rem);line-height:1.08}.seo-hero-offer{max-width:48ch;color:var(--color-muted);font-size:1.02rem;line-height:1.85}.seo-hero-actions{flex-wrap:wrap;align-items:center;gap:1.25rem;margin-top:1.75rem;display:flex}.seo-enquiry-button{border:1px solid var(--color-olive);background:var(--color-olive);min-height:48px;color:var(--color-paper);font:inherit;cursor:pointer;justify-content:center;align-items:center;gap:1.25rem;padding:.9rem 1.25rem;font-size:.82rem;line-height:1.4;display:inline-flex}.seo-enquiry-button:hover{background:var(--color-olive-deep)}.seo-enquiry-button span{flex-shrink:0}.seo-secondary-action{border-bottom:1px solid var(--color-line-strong);align-items:center;gap:1rem;min-height:44px;font-size:.82rem;display:inline-flex}.seo-hero-note{max-width:48ch;color:var(--color-muted);margin-top:1.25rem;font-size:.7rem;line-height:1.7}.seo-hero-image{aspect-ratio:1.05;background:var(--color-mist);position:relative;overflow:hidden}.seo-hero-figure figcaption{color:var(--color-muted);flex-wrap:wrap;justify-content:space-between;gap:.4rem 1rem;margin-top:.8rem;font-size:.65rem;line-height:1.6;display:flex}.seo-jump-links{border-block:1px solid var(--color-line);flex-wrap:wrap;gap:.8rem 2rem;margin-top:3rem;padding-block:.55rem;display:flex}.seo-jump-links a{align-items:center;min-height:44px;font-size:.8rem;display:inline-flex}.seo-jump-links a:hover{text-decoration:underline}.seo-landing-body h2{font-size:clamp(1.9rem,3.1vw,2.8rem);line-height:1.15;font-family:var(--font-display);font-weight:400}.seo-landing-body p{line-height:1.8}.seo-landing-overview{max-width:900px;margin-block:3rem}.seo-landing-overview h2{margin-bottom:1rem}.seo-landing-overview>p:last-child{color:var(--color-muted);max-width:78ch;font-size:1rem}.seo-section-heading{justify-content:space-between;align-items:end;gap:2rem;margin-bottom:1.75rem;display:flex}.seo-section-heading>p{max-width:43ch;color:var(--color-muted);font-size:.85rem}.seo-piano-options{margin-block:3.5rem;scroll-margin-top:6.5rem}.seo-piano-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:1.5rem;display:grid}.seo-piano-choice{min-width:0}.seo-piano-image{aspect-ratio:1.3;background:var(--color-mist);display:block;position:relative;overflow:hidden}.seo-piano-copy{padding-block:1.25rem}.seo-piano-copy .seo-kicker{margin-bottom:.45rem}.seo-piano-copy h3{font-size:2rem;line-height:1.1}.seo-piano-copy>p:not(.seo-kicker){color:var(--color-muted);margin-top:.4rem;font-size:.8rem}.seo-piano-actions{border-top:1px solid var(--color-line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.75rem;margin-top:1rem;padding-top:.5rem;display:flex}.seo-piano-actions>a{align-items:center;min-height:44px;font-size:.75rem;text-decoration:underline;display:inline-flex}.seo-enquiry-text{color:var(--color-ink);border:0;border-bottom:1px solid var(--color-line);background:0 0;min-height:44px;padding:.6rem 0;font-size:.75rem}.seo-enquiry-text:hover{border-color:var(--color-ink);background:0 0}.seo-image-note{color:var(--color-muted);font-size:.68rem;line-height:1.7}.seo-landing .seo-diagram{padding:clamp(1.5rem,3vw,3rem);scroll-margin-top:6.5rem}.seo-landing .seo-diagram h2{color:var(--color-paper);max-width:28ch;margin-bottom:2rem}.seo-landing .seo-diagram-steps{grid-template-columns:repeat(var(--step-count), minmax(0, 1fr));gap:2rem}.seo-landing .seo-diagram-steps li{border:0;min-width:0;padding:0}.seo-landing .seo-diagram-steps li:not(:last-child):after{content:"→";opacity:.65;font-size:1.3rem;position:absolute;top:.7rem;right:-1.5rem}.seo-landing .seo-step-number{opacity:1;border:1px solid #ffffff65;border-radius:50%;place-items:center;width:3rem;height:3rem;font-size:1.25rem;display:inline-grid}.seo-landing .seo-diagram h3{margin-block:1rem .65rem;font-size:1.4rem}.seo-landing .seo-diagram-steps p{color:#f7f6f3dd;font-size:.78rem;line-height:1.75}.seo-enquiry-callout{border-block:1px solid var(--color-line);justify-content:space-between;align-items:center;gap:2rem;margin-block:2.5rem;padding:2rem 0;display:flex}.seo-enquiry-callout h2{font-size:clamp(1.75rem,2.8vw,2.4rem)}.seo-enquiry-callout p:not(.seo-kicker){max-width:60ch;color:var(--color-muted);margin-top:.75rem;font-size:.85rem}.seo-enquiry-callout>.seo-enquiry-button{flex-shrink:0}.seo-enquiry-final{background:var(--color-mist);border:0;margin-top:3.5rem;padding:2.5rem}.seo-detailed-guidance{margin-top:3.5rem;scroll-margin-top:6.5rem}.seo-chapter-picker,.seo-introduction-details{border-bottom:1px solid var(--color-line);margin-top:1rem}.seo-chapter-picker summary,.seo-introduction-details summary,.seo-optional-tool>summary{cursor:pointer;justify-content:space-between;align-items:center;gap:1rem;min-height:48px;padding:1rem 0;font-size:.88rem;list-style:none;display:flex}.seo-chapter-picker summary::-webkit-details-marker{display:none}.seo-introduction-details summary::-webkit-details-marker{display:none}.seo-optional-tool>summary::-webkit-details-marker{display:none}.seo-chapter-picker ol{grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem 2rem;padding-block:.5rem 1.5rem;display:grid}.seo-chapter-picker a{padding-block:.4rem;font-size:.82rem;line-height:1.7;text-decoration:underline;display:block}.seo-introduction-details p{max-width:80ch;color:var(--color-muted);margin-bottom:1.25rem;font-size:.9rem}.seo-detail-grid{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;gap:1rem 3rem;display:grid}.seo-landing .seo-prose-section{margin-top:1.75rem;padding-top:1.5rem}.seo-landing .seo-prose-section h3{margin-bottom:1rem;font-size:clamp(1.6rem,2vw,2rem)}.seo-landing .seo-prose-section>p:not(.seo-section-number),.seo-landing .seo-prose-section li{font-size:.88rem;line-height:1.85}.seo-section-number{color:var(--color-muted);letter-spacing:.15em;margin-bottom:.75rem;font-size:.65rem}.seo-section-details{margin-top:1.1rem}.seo-section-details summary{cursor:pointer;border-bottom:1px solid var(--color-line-strong);align-items:center;gap:1rem;min-height:44px;padding-block:.5rem;font-size:.8rem;display:inline-flex}.seo-section-details summary::-webkit-details-marker{display:none}.seo-section-details p{margin-top:1.1rem;font-size:.88rem;line-height:1.85}.seo-section-details[open] summary span{transform:rotate(45deg)}.seo-optional-tool{border-block:1px solid var(--color-line);margin-top:3rem}.seo-optional-tool>summary{font-family:var(--font-display);font-size:1.75rem}.seo-optional-tool .seo-brief{border:0;margin-top:0}.seo-landing .seo-brief{scroll-margin-top:6.5rem}.seo-landing .seo-brief h2{margin-bottom:1rem}.seo-landing .seo-tool-actions{align-items:center}.seo-landing .seo-questions{max-width:900px;margin-inline:auto;padding-top:2rem}.seo-landing .seo-questions h2{margin-bottom:1rem}.seo-landing .seo-questions p{max-width:80ch;font-size:.9rem;line-height:1.85}.seo-enquiry-overlay{z-index:70;background:#1c1c1c85;position:fixed;inset:0}.seo-enquiry-dialog{z-index:71;background:var(--color-paper);width:min(610px,100vw - 2rem);max-height:min(90dvh,950px);color:var(--color-ink);padding:2rem;position:fixed;top:50%;left:50%;overflow-y:auto;transform:translate(-50%,-50%)}.seo-enquiry-dialog h2{font-family:var(--font-display);padding-right:2rem;font-size:2.4rem;font-weight:400;line-height:1.1}.seo-enquiry-dialog>p:not(.seo-kicker){color:var(--color-muted);margin-block:1rem 1.75rem;font-size:.85rem;line-height:1.7}.seo-enquiry-close{cursor:pointer;width:44px;height:44px;font-size:1.75rem;position:absolute;top:1rem;right:1rem}.seo-sticky-enquiry{bottom:max(1rem, env(safe-area-inset-bottom));z-index:35;background:var(--color-paper);border:1px solid var(--color-olive);align-items:center;gap:1.5rem;width:max-content;max-width:calc(100vw - 2rem);padding:.65rem .75rem .65rem 1.5rem;display:flex;position:fixed;left:50%;transform:translate(-50%);box-shadow:0 8px 30px #1c1c1c18}.seo-sticky-enquiry p{font-size:.85rem}.seo-sticky-enquiry[hidden]{display:none}.seo-sticky-close{cursor:pointer;flex-shrink:0;width:44px;height:44px;font-size:1.4rem}@media (max-width:900px){.seo-hero-grid{gap:2rem}.seo-landing .seo-diagram-steps{grid-template-columns:1fr;gap:1.25rem}.seo-landing .seo-diagram-steps li{grid-template-columns:3rem 1fr;column-gap:1.25rem;padding-bottom:1.4rem;display:grid}.seo-landing .seo-diagram-steps li .seo-step-number{grid-row:span 2}.seo-landing .seo-diagram h3{margin-top:0}.seo-landing .seo-diagram-steps li:not(:last-child):after{content:"↓";inset:auto auto -.6rem 1rem}.seo-section-heading{flex-direction:column;align-items:start;gap:1rem}.seo-enquiry-callout{flex-direction:column;align-items:start;gap:1.25rem}}@media (max-width:760px){.seo-hero-grid{grid-template-columns:1fr}.seo-hero-image{aspect-ratio:1.45}.seo-hero-copy h1{font-size:clamp(2.5rem,9vw,3.5rem)}.seo-detail-grid,.seo-chapter-picker ol{grid-template-columns:1fr}.seo-piano-grid{gap:1rem}.seo-piano-copy h3{font-size:1.6rem}.seo-jump-links{gap:.5rem 1.25rem;margin-top:2rem}.seo-landing .seo-prose-section{margin-top:1rem}.seo-enquiry-dialog,.seo-enquiry-final{padding:1.5rem}}@media (max-width:560px){.seo-landing{padding-inline:1.25rem}.seo-hero-actions{align-items:stretch;gap:.75rem}.seo-hero-actions>.seo-enquiry-button{width:100%}.seo-piano-grid{grid-template-columns:1fr;gap:1.75rem}.seo-piano-image{aspect-ratio:1.65}.seo-piano-actions{justify-content:flex-start;gap:2rem}.seo-sticky-enquiry{gap:.75rem;width:auto;padding-left:.8rem;left:1rem;right:1rem;transform:none}.seo-sticky-enquiry p{flex:1;font-size:.75rem}.seo-sticky-enquiry .seo-enquiry-button{padding-inline:.8rem}}@media print{.seo-enquiry-overlay,.seo-enquiry-dialog,.seo-sticky-enquiry,.seo-enquiry-button{display:none}}