/* Alder & Form · shared presentation and responsive layout */
:root {
  color-scheme: light;
  --paper: #f5f1e9;
  --ink: #30372d;
  --muted: #565e51;
  --clay: #a64d35;
  --line: #d1d3c7;
  --field-line: #7b806f;
  --soft: #ebe7dc;
  --error: #8b3229;
  --serif: Georgia, 'Times New Roman', serif;
  --header-offset: 112px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-offset); }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.7 Arial, Helvetica, sans-serif; }
[hidden] { display: none !important; }
a { color: inherit; text-decoration: none; text-underline-offset: .25em; }
button, input, select, textarea { font: inherit; }
button, a, input, select, textarea { -webkit-tap-highlight-color: transparent; }
button { touch-action: manipulation; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible,
select:focus-visible, summary:focus-visible, [tabindex='-1']:focus-visible {
  outline: 3px solid var(--clay); outline-offset: 4px;
}
img { display: block; max-width: 100%; width: 100%; height: auto; }
p { margin: 0 0 1.25rem; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; line-height: 1.12; margin: 0 0 1.25rem; letter-spacing: -.045em; }
h1 { font-size: clamp(48px, 6.2vw, 88px); }
h2 { font-size: clamp(36px, 4.2vw, 58px); }
h3 { font-size: 30px; }
section { position: relative; scroll-margin-top: 16px; }
main:focus { outline: none; }
.wrap { width: min(1280px, calc(100% - 96px)); margin-inline: auto; }
.wrap > *, .split > *, .hero > *, .service > *, .story > *, .contact-layout > * { min-width: 0; }
.demo-note { padding: 9px 20px; background: var(--ink); color: var(--paper); text-align: center; font-size: 10px; line-height: 1.5; letter-spacing: .12em; text-transform: uppercase; }
.skip { position: fixed; top: 10px; left: 16px; z-index: 100; transform: translateY(-160%); padding: 12px 18px; background: var(--ink); color: var(--paper); }
.skip:focus { transform: translateY(0); }
header { position: sticky; inset-block-start: 0; z-index: 40; background: var(--paper); border-bottom: 1px solid var(--line); }
.nav { min-height: 96px; display: flex; justify-content: space-between; align-items: center; gap: 28px; }
.brand { display: inline-block; font: 31px/1 var(--serif); letter-spacing: -.06em; padding-block: 9px; }
.brand span { display: block; margin-top: 11px; font: 10px/1.2 Arial, sans-serif; letter-spacing: .21em; text-transform: uppercase; }
.nav-links { display: flex; align-items: center; gap: 28px; font-size: 14px; }
.nav-links > a { min-height: 44px; display: inline-flex; align-items: center; border-bottom: 1px solid transparent; }
.nav-links > a[aria-current='page'] { border-bottom-color: var(--clay); color: var(--clay); }
.nav-links a:hover { color: var(--clay); }
.nav-links .nav-cta { padding: 10px 20px; border: 1px solid var(--ink); color: var(--ink); }
.nav-links .nav-cta:hover, .nav-links .nav-cta[aria-current='page'] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.nav-toggle { display: none; min-height: 46px; min-width: 76px; padding: 10px 16px; background: transparent; color: var(--ink); border: 1px solid var(--field-line); cursor: pointer; }
.eyebrow { margin-bottom: 23px; color: var(--clay); font-size: 11px; line-height: 1.6; font-weight: 600; text-transform: uppercase; letter-spacing: .14em; }
.hero { display: grid; grid-template-columns: .92fr 1.08fr; align-items: center; gap: clamp(32px, 5vw, 72px); padding-block: 50px 64px; }
.hero-copy { padding-block: 22px; }
.hero h1 { font-size: clamp(44px, 5.9vw, 88px); line-height: 1.08; }
.hero h1 em { color: var(--clay); }
.lead { max-width: 47ch; color: var(--muted); font-size: 17px; line-height: 1.8; }
.button { min-height: 50px; display: inline-flex; align-items: center; justify-content: space-between; gap: 30px; padding: 14px 22px; border: 1px solid var(--ink); background: var(--ink); color: var(--paper); font-size: 14px; line-height: 1.5; cursor: pointer; transition: background-color .18s, color .18s; }
.button:hover { background: var(--clay); border-color: var(--clay); color: var(--paper); }
.button.light { background: transparent; color: var(--ink); }
.button.light:hover { background: var(--clay); color: var(--paper); border-color: var(--clay); }
.button:disabled { opacity: .6; cursor: not-allowed; }
.text-link { min-height: 44px; display: inline-flex; align-items: center; gap: 28px; border-bottom: 1px solid var(--field-line); padding-block: 8px; font-size: 14px; line-height: 1.5; }
.text-link:hover { color: var(--clay); border-color: var(--clay); }
.actions { display: flex; align-items: center; flex-wrap: wrap; gap: 20px 28px; margin-block: 30px 33px; }
.tiny { color: var(--muted); font-size: 13px; line-height: 1.6; }
.hero-art { position: relative; background: #ddd5c4; }
.hero-art img { aspect-ratio: 1 / 1.02; object-fit: cover; }
.art-note { position: absolute; left: 18px; right: 18px; bottom: 18px; width: fit-content; max-width: calc(100% - 36px); padding: 10px 13px; background: var(--paper); color: var(--ink); font-size: 10px; line-height: 1.5; letter-spacing: .09em; text-transform: uppercase; }
.caption { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 6px 16px; padding-top: 13px; color: var(--muted); font-size: 11px; line-height: 1.6; text-transform: uppercase; letter-spacing: .06em; }
.principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); padding-block: 26px; border-block: 1px solid var(--line); font-size: 14px; }
.principles > span { display: flex; align-items: center; gap: 15px; padding-left: 28px; border-left: 1px solid var(--line); }
.principles > span:first-child { padding-left: 0; border-left: 0; }
.principles b { color: var(--clay); font: 24px/1 var(--serif); }
.section { padding-block: 92px; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 40px; margin-bottom: 38px; }
.section-head h2 { max-width: 680px; margin-bottom: 0; }
.section-head > p { max-width: 34ch; color: var(--muted); font-size: 16px; }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.card .image { display: block; overflow: hidden; margin-bottom: 22px; background: var(--soft); }
.card img { aspect-ratio: 1.2; object-fit: cover; transition: transform .35s; }
@media (hover: hover) { .card .image:hover img { transform: scale(1.025); } }
.card h3 { margin-bottom: 13px; font-size: 29px; }
.card p { color: var(--muted); font-size: 15px; }
.card .index { margin-bottom: 10px; color: var(--clay); font-size: 11px; letter-spacing: .13em; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; gap: clamp(32px, 6vw, 90px); }
.split .copy { max-width: 500px; }
.split p:not(.eyebrow) { color: var(--muted); }
.bg-soft { background: var(--soft); }
.bg-dark { background: var(--ink); color: var(--paper); }
.bg-dark .eyebrow { color: #e6bfa8; }
.bg-dark p { color: #d6d9cd; }
.cta { display: flex; align-items: center; justify-content: space-between; gap: 36px; padding-block: 68px; border-top: 1px solid var(--line); }
.cta h2 { max-width: 700px; margin: 0; }
.cta .button { flex-shrink: 0; }
.page-intro { max-width: 900px; padding-block: 70px 54px; }
.page-intro h1 { max-width: 870px; font-size: clamp(46px, 5.2vw, 76px); }
.page-intro .lead { max-width: 60ch; }
.wide-art img { max-height: 620px; object-fit: cover; }
.steps { counter-reset: step; }
.step { display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 16px; padding-block: 25px; border-top: 1px solid var(--line); }
.step::before { counter-increment: step; content: '0' counter(step); padding-top: 5px; color: var(--clay); font-size: 12px; }
.step h3 { margin-bottom: 10px; font-size: 27px; line-height: 1.2; }
.step p { max-width: 65ch; margin: 0; color: var(--muted); font-size: 15px; }
.section-jump { display: flex; flex-wrap: wrap; gap: 10px; margin-block: 0 28px; }
.section-jump a { display: inline-flex; align-items: center; min-height: 46px; padding: 10px 18px; border: 1px solid var(--field-line); color: var(--ink); font-size: 14px; }
.section-jump a:hover { border-color: var(--clay); color: var(--clay); }
.service { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 75px); align-items: center; padding-block: 50px; border-top: 1px solid var(--line); }
.service:nth-of-type(even) .service-copy { order: -1; }
.service img { aspect-ratio: 1.3; object-fit: cover; }
.service p, .service li { color: var(--muted); font-size: 16px; }
.service ul { padding-left: 20px; margin-bottom: 25px; }
.service li { padding-left: 4px; margin-bottom: 6px; }
.notice { margin-bottom: 30px; padding: 17px 20px; border-left: 3px solid var(--clay); background: var(--soft); color: var(--muted); font-size: 14px; line-height: 1.65; }
.notice strong { color: var(--ink); }
.story { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); align-items: center; gap: clamp(32px, 5vw, 65px); padding-block: 40px 62px; border-top: 1px solid var(--line); }
.story p { color: var(--muted); font-size: 16px; }
.story img { aspect-ratio: 1.3; object-fit: cover; }
.story .story-label { margin-bottom: 19px; color: var(--clay); font-size: 11px; line-height: 1.6; letter-spacing: .13em; text-transform: uppercase; }
.detail-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 28px; }
.detail-grid strong { display: block; margin-bottom: 8px; font-size: 11px; line-height: 1.6; letter-spacing: .09em; text-transform: uppercase; }
.detail-grid p { font-size: 14px; }
.faq { max-width: 780px; }
.faq details { padding-block: 19px; border-top: 1px solid var(--line); }
.faq summary { min-height: 44px; display: flex; align-items: center; justify-content: space-between; gap: 24px; list-style: none; font: 24px/1.25 var(--serif); cursor: pointer; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; flex-shrink: 0; font: 22px/1 Arial, sans-serif; color: var(--clay); }
.faq details[open] summary::after { content: '−'; }
.faq p { max-width: 66ch; margin: 17px 34px 0 0; color: var(--muted); }
.contact-layout { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); align-items: start; gap: clamp(32px, 6vw, 90px); padding-bottom: 90px; }
.contact-aside { padding-top: 26px; border-top: 1px solid var(--line); }
.contact-aside h2 { font-size: 34px; }
.contact-aside p { color: var(--muted); font-size: 15px; }
.contact-form { padding: 35px; border: 1px solid var(--line); background: #fffdf8; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.contact-form label { display: block; margin-bottom: 24px; font-size: 16px; line-height: 1.6; }
.contact-form input, .contact-form select, .contact-form textarea { width: 100%; min-width: 0; min-height: 48px; display: block; margin-top: 8px; padding: 11px 12px; border: 1px solid var(--field-line); border-radius: 0; background: #fffefb; color: var(--ink); font-size: 16px; line-height: 1.5; }
.contact-form textarea { min-height: 150px; resize: vertical; }
.contact-form input::placeholder, .contact-form textarea::placeholder { color: #62685d; opacity: 1; }
.contact-form .check { min-height: 44px; display: flex; align-items: flex-start; gap: 12px; margin-top: 5px; font-size: 14px; color: var(--muted); cursor: pointer; }
.contact-form .check input { width: 24px; height: 24px; min-height: 24px; flex: 0 0 24px; margin: 1px 0 0; padding: 0; accent-color: var(--ink); }
.field-hint { display: block; margin-block: 7px 0; color: var(--muted); font-size: 13px; line-height: 1.6; }
.field-error { display: block; margin-top: 8px; color: var(--error); font-size: 14px; font-weight: 600; line-height: 1.5; }
[aria-invalid='true'] { border: 2px solid var(--error) !important; }
.error-summary { margin-bottom: 28px; padding: 20px; border: 2px solid var(--error); color: var(--error); background: #fff9f3; }
.error-summary h2 { margin-bottom: 12px; color: var(--error); font: 600 20px/1.4 Arial, sans-serif; letter-spacing: 0; }
.error-summary p { margin-bottom: 10px; }
.error-summary ul { margin: 0; padding-left: 21px; }
.error-summary a { display: inline-block; min-height: 36px; padding-block: 5px; font-size: 14px; text-decoration: underline; }
.project-prompts { margin-block: 0 25px; padding-left: 18px; color: var(--muted); font-size: 14px; }
.form-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.form-status { margin-top: 20px; padding-left: 16px; border-left: 3px solid var(--clay); font-size: 14px; }
.form-status:empty { display: none; }
.contact-form details { margin-top: 22px; font-size: 14px; }
.contact-form summary { min-height: 44px; padding-block: 10px; cursor: pointer; }
.inquiry-preview { margin-top: 26px; padding: 22px; border: 1px solid var(--field-line); background: var(--paper); color: var(--ink); overflow-wrap: anywhere; }
.inquiry-preview:focus { outline: 3px solid var(--clay); outline-offset: 4px; }
.inquiry-preview h2 { font-size: 28px; }
.inquiry-preview dl { margin: 18px 0 0; }
.inquiry-preview dt { margin-bottom: 3px; font-size: 13px; font-weight: 600; color: var(--muted); }
.inquiry-preview dd { margin: 0 0 16px; font-size: 16px; white-space: pre-wrap; }
footer { padding-block: 48px 26px; border-top: 1px solid var(--line); }
.footer-top { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr); gap: 45px; padding-bottom: 34px; }
.footer-top p { max-width: 36ch; margin-top: 20px; color: var(--muted); font-size: 14px; line-height: 1.7; }
.footer-nav { display: flex; flex-direction: column; align-items: start; font-size: 14px; }
.footer-nav strong { margin-block: 0 13px; font-size: 11px; line-height: 1.6; letter-spacing: .12em; text-transform: uppercase; }
.footer-nav a { min-height: 44px; display: inline-flex; align-items: center; padding-block: 9px; }
.footer-nav a:hover { color: var(--clay); text-decoration: underline; }
.footer-nav p { margin-top: 0; }
.footer-bottom { display: flex; justify-content: space-between; gap: 18px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; line-height: 1.6; }
@media (min-width: 1500px) {
  .wrap { width: min(1380px, calc(100% - 120px)); }
  .hero { gap: 90px; }
}
@media (max-width: 1000px) {
  .wrap { width: calc(100% - 56px); }
  .nav-links { gap: 18px; }
  .brand { font-size: 29px; }
  .hero { gap: 30px; }
  .section { padding-block: 66px; }
  .cards { gap: 22px; }
  .card h3 { font-size: 27px; }
  .contact-form { padding: 27px; }
  .form-grid { grid-template-columns: 1fr; gap: 0; }
  .principles { font-size: 13px; }
  .principles > span { padding-left: 18px; gap: 12px; }
  .footer-top { gap: 30px; }
}
@media (max-width: 680px) {
  html { --header-offset: 92px; }
  header { position: static; }
  .js header { position: sticky; }
  .wrap { width: calc(100% - 40px); }
  .demo-note { padding: 8px 18px; font-size: 10px; line-height: 1.55; letter-spacing: .09em; }
  .nav { min-height: 78px; flex-wrap: wrap; gap: 0; padding-block: 7px; }
  .brand { font-size: 27px; }
  .brand span { margin-top: 9px; font-size: 9px; }
  .nav-links { width: 100%; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 5px 18px; padding-block: 15px; font-size: 16px; }
  .nav-links > a { min-height: 46px; padding: 9px 2px; }
  .nav-links .nav-cta { grid-column: 1 / -1; justify-content: center; padding: 11px 18px; margin-top: 8px; }
  .js .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .js .nav-links { display: none; }
  .js .nav-links.is-open { display: grid; max-height: calc(100dvh - 100px); overflow-y: auto; overscroll-behavior: contain; }
  .hero { grid-template-columns: 1fr; gap: 28px; padding-block: 32px 36px; }
  .hero-copy { padding: 0; }
  .hero h1 { font-size: clamp(44px, 14vw, 62px); line-height: 1.07; }
  .eyebrow { max-width: 38ch; font-size: 11px; margin-bottom: 19px; }
  .lead { max-width: 49ch; font-size: 16px; line-height: 1.8; }
  .actions { display: grid; grid-template-columns: 1fr; justify-items: start; gap: 12px; margin-block: 25px 22px; }
  .actions .button { min-width: 224px; }
  .hero-copy > .tiny { max-width: 36ch; margin-bottom: 0; }
  .hero-art img { aspect-ratio: 1.04; }
  .art-note { left: 13px; right: 13px; bottom: 13px; max-width: calc(100% - 26px); padding: 9px 11px; font-size: 10px; }
  .caption { font-size: 10px; }
  .principles { grid-template-columns: 1fr; padding-block: 7px; font-size: 14px; }
  .principles > span, .principles > span:first-child { min-height: 55px; padding: 13px 0; border: 0; gap: 18px; }
  .principles > span + span { border-top: 1px solid var(--line); }
  .section { padding-block: 52px; }
  .section-head { display: block; margin-bottom: 30px; }
  .section-head > p { max-width: 49ch; margin-top: 22px; }
  h2 { font-size: clamp(35px, 8.6vw, 44px); line-height: 1.14; }
  .cards, .split, .service, .story, .contact-layout { grid-template-columns: 1fr; gap: 29px; }
  .cards { gap: 42px; }
  .card .image { margin-bottom: 21px; }
  .card img { aspect-ratio: 1.23; }
  .card h3 { font-size: 31px; }
  .card p { font-size: 16px; }
  .split .copy { max-width: none; }
  .cta { display: block; padding-block: 48px; }
  .cta h2 { margin-bottom: 25px; }
  .page-intro { padding-block: 43px 29px; }
  .page-intro h1 { font-size: clamp(41px, 11.8vw, 56px); line-height: 1.12; }
  .section-jump { display: grid; grid-template-columns: 1fr; gap: 8px; margin-bottom: 26px; }
  .section-jump a { justify-content: space-between; min-height: 46px; }
  .section-jump a::after { content: '↓'; color: var(--clay); }
  .service { padding-block: 35px; }
  .service:nth-of-type(even) .service-copy { order: initial; }
  .service img { aspect-ratio: 1.2; }
  .service-copy > .button { width: 100%; }
  .notice { padding: 16px 18px; font-size: 14px; }
  .story { padding-block: 32px 40px; }
  .story img { aspect-ratio: 1.2; }
  .detail-grid { gap: 18px; }
  .detail-grid p { font-size: 14px; }
  .faq summary { font-size: 24px; }
  .faq p { margin-right: 0; }
  .contact-layout { padding-bottom: 52px; }
  .contact-aside { order: 2; }
  .contact-form { order: 1; padding: 24px 20px; }
  .contact-form .notice { margin-inline: -3px; }
  .contact-form label { margin-bottom: 23px; }
  .form-actions { align-items: stretch; }
  .form-actions .button { width: 100%; }
  .inquiry-preview { padding: 20px 16px; }
  .error-summary { padding: 18px 16px; }
  footer { padding-top: 36px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 30px; padding-bottom: 20px; }
  .footer-top > div:first-child { grid-column: 1 / -1; }
  .footer-top p { max-width: 46ch; font-size: 14px; }
  .footer-nav strong { margin-bottom: 13px; }
  .footer-bottom { display: block; font-size: 12px; }
  .footer-bottom span { display: block; margin-bottom: 9px; }
}
@media (max-width: 420px) {
  .wrap { width: calc(100% - 36px); }
  .footer-top { grid-template-columns: 1fr; gap: 25px; }
  .footer-top > div:first-child { grid-column: auto; }
  .footer-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 18px; }
  .footer-nav > strong, .footer-nav > p { grid-column: 1 / -1; }
  .detail-grid { grid-template-columns: 1fr; gap: 7px; }
  .detail-grid strong { margin-bottom: 4px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Material study: one focused comparison, no carousel or motion dependency. */
.finish-study { display:grid; grid-template-columns:minmax(0, .9fr) minmax(0, 1.1fr); align-items:center; gap:70px; }
.finish-copy > p:not(.eyebrow) { color:var(--muted); }
.finish-figure { margin:0; }
.finish-figure img { aspect-ratio:1.25; object-fit:cover; background:var(--soft); }
.finish-figure figcaption { margin-top:12px; color:var(--muted); text-transform:uppercase; letter-spacing:.08em; font-size:11px; }
.finish-options { display:none; flex-wrap:wrap; gap:12px; margin-block:25px 17px; }
.js .finish-options { display:flex; }
.finish-option { display:flex; align-items:center; gap:11px; min-height:58px; padding:11px 14px; border:1px solid var(--field-line); background:transparent; color:var(--ink); font-size:14px; text-align:left; cursor:pointer; }
.finish-option[aria-pressed='true'] { border:2px solid var(--ink); padding:10px 13px; background:var(--soft); }
.finish-option:disabled { cursor:default; }
.finish-option:hover:not(:disabled) { border-color:var(--clay); }
.finish-swatch { width:27px; height:27px; border-radius:50%; border:1px solid #634c36; flex:0 0 27px; }
.swatch-oak { background:linear-gradient(100deg,#c09a6c,#a5794d 45%,#b89161); }
.swatch-walnut { background:linear-gradient(100deg,#4b3227,#9c7960 50%,#775440); }
.finish-description { min-height:3.4em; font-size:15px; }
input, textarea, select, .inquiry-preview, .error-summary { scroll-margin-top:20px; }
#reset-preview { margin-top:18px; }
@media(max-width:900px) { .finish-study { gap:35px; } .finish-options { flex-direction:column; align-items:stretch; } }
@media(max-width:680px) { .finish-study { grid-template-columns:1fr; gap:28px; } .finish-options { display:none; flex-direction:row; } .finish-option { flex:1 1 160px; } .finish-description { min-height:0; } }