/* introarchitecture.it.com — site stylesheet
   Theme: Coffee Bean + Deep Walnut · Header: Vivid Royal · Footer: Wisteria Blue */

:root {
  --coffee: #2b1a12;
  --coffee-2: #3a2419;
  --walnut: #5a3823;
  --walnut-deep: #472c1b;
  --walnut-soft: #b07c52;
  --linen: #f5eee5;
  --linen-2: #ebe0d2;
  --sand: #e8d6be;
  --ink: #24160f;
  --ink-soft: #5e4a3d;
  --royal: #3a2bd0;
  --royal-deep: #2a1fa3;
  --royal-tint: #c9c4ff;
  --wisteria: #8fa5d7;
  --wisteria-deep: #6f87c0;
  --line-dark: rgba(232, 214, 190, .22);
  --line-light: rgba(43, 26, 18, .16);

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", "URW Palladio L", P052, Georgia, serif;
  --sans: "Avenir Next", Avenir, "Segoe UI Variable Text", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 48px);
  --sect: clamp(64px, 9vw, 128px);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--linen);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}
img, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; line-height: 1.12; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(2.5rem, 6.2vw, 5.4rem); }
h2 { font-size: clamp(1.9rem, 3.8vw, 3.1rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.55rem); }
p { margin: 0 0 1.1em; }
em { font-style: italic; }
::selection { background: var(--royal); color: #fff; }
:focus-visible { outline: 2px solid var(--royal); outline-offset: 3px; }

.ia-wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.ia-skip { position: absolute; left: -999px; top: 8px; background: #fff; color: var(--ink); padding: 8px 14px; z-index: 200; }
.ia-skip:focus { left: 8px; }
.ia-tag {
  font-family: var(--mono); font-size: .74rem; letter-spacing: .14em; text-transform: uppercase;
  display: inline-flex; align-items: center; gap: .7em; margin-bottom: 1.4em;
}
.ia-tag::before { content: ""; width: 28px; height: 1px; background: currentColor; }
.ia-lede { font-family: var(--serif); font-size: clamp(1.2rem, 2vw, 1.5rem); line-height: 1.5; }

/* Buttons — drawn like a plan tag: square, hairline, offset tick */
.ia-btn {
  display: inline-flex; align-items: center; gap: .8em;
  font-family: var(--mono); font-size: .8rem; letter-spacing: .12em; text-transform: uppercase;
  text-decoration: none; padding: 1em 1.5em; border: 1px solid currentColor;
  position: relative; transition: background .25s, color .25s;
}
.ia-btn::after { content: "→"; font-family: var(--sans); transition: transform .25s; }
.ia-btn:hover::after { transform: translateX(4px); }
.ia-btn--solid { background: var(--sand); color: var(--coffee); border-color: var(--sand); }
.ia-btn--solid:hover { background: #fff; border-color: #fff; }
.ia-btn--line { color: var(--sand); }
.ia-btn--line:hover { background: var(--sand); color: var(--coffee); }
.ia-btn--ink { color: var(--ink); }
.ia-btn--ink:hover { background: var(--ink); color: var(--linen); }

/* ================= HEADER (Vivid Royal blueprint strip) ================= */
.ia-head {
  position: sticky; top: 0; z-index: 100;
  background-color: var(--royal);
  background-image:
    linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.07) 1px, transparent 1px);
  background-size: 22px 22px;
  color: #fff;
  transition: box-shadow .3s;
}
.ia-head.is-scrolled { box-shadow: 0 10px 30px -12px rgba(20, 10, 70, .55); }
.ia-head__rail { border-bottom: 1px solid rgba(255,255,255,.18); font-family: var(--mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; }
.ia-head__rail .ia-wrap { display: flex; justify-content: space-between; gap: 16px; padding-top: 7px; padding-bottom: 7px; }
.ia-head__rail a { text-decoration: none; text-transform: none; letter-spacing: .04em; color: var(--royal-tint); }
.ia-head__rail a:hover { color: #fff; }
.ia-head__bar .ia-wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 76px; }

.ia-brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: #fff; flex-shrink: 0; }
.ia-brand svg { width: 42px; height: 42px; flex-shrink: 0; }
.ia-brand__word { display: flex; flex-direction: column; line-height: 1; }
.ia-brand__word b { font-family: var(--serif); font-weight: 400; font-size: 1.32rem; letter-spacing: .01em; }
.ia-brand__word small { font-family: var(--mono); font-size: .6rem; letter-spacing: .22em; text-transform: uppercase; opacity: .78; margin-top: 5px; }

.ia-nav ol { list-style: none; margin: 0; padding: 0; display: flex; align-items: center; gap: clamp(8px, 1.4vw, 22px); counter-reset: navno; }
.ia-nav li { counter-increment: navno; }
.ia-nav a {
  display: inline-flex; align-items: baseline; gap: 5px;
  text-decoration: none; font-size: .9rem; letter-spacing: .01em; white-space: nowrap;
  padding: 8px 2px; position: relative; color: rgba(255,255,255,.88);
}
.ia-nav a::before { content: counter(navno, decimal-leading-zero); font-family: var(--mono); font-size: .62rem; color: var(--royal-tint); opacity: .85; }
.ia-nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 2px; height: 7px;
  border-left: 1px solid #fff; border-right: 1px solid #fff; border-bottom: 1px solid #fff;
  transform: scaleX(0); transform-origin: left; transition: transform .3s;
}
.ia-nav a:hover { color: #fff; }
.ia-nav a:hover::after, .ia-nav a[aria-current="page"]::after { transform: scaleX(1); }
.ia-nav a[aria-current="page"] { color: #fff; }

.ia-burger {
  display: none; background: transparent; border: 1px solid rgba(255,255,255,.55); color: #fff;
  width: 48px; height: 44px; cursor: pointer; padding: 0; position: relative;
}
.ia-burger span { position: absolute; left: 13px; right: 13px; height: 1.5px; background: #fff; transition: transform .3s, opacity .2s; }
.ia-burger span:nth-child(1) { top: 15px; }
.ia-burger span:nth-child(2) { top: 21px; right: 19px; }
.ia-burger span:nth-child(3) { top: 27px; }
.ia-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.ia-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.ia-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 1080px) {
  .ia-burger { display: block; }
  .ia-head__rail { display: none; }
  .ia-nav {
    position: fixed; left: 0; right: 0; top: var(--ia-head-h, 76px); bottom: 0;
    background: var(--royal-deep);
    background-image: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
    background-size: 22px 22px;
    padding: 28px var(--gutter) 40px; overflow-y: auto;
    visibility: hidden; opacity: 0; transform: translateY(-8px);
    transition: opacity .3s, transform .3s, visibility 0s .3s;
  }
  .ia-nav.is-open { visibility: visible; opacity: 1; transform: none; transition: opacity .3s, transform .3s; }
  .ia-nav ol { flex-direction: column; align-items: stretch; gap: 0; }
  .ia-nav li { border-bottom: 1px solid rgba(255,255,255,.16); }
  .ia-nav a { font-family: var(--serif); font-size: clamp(1.5rem, 6vw, 2.1rem); padding: 16px 0; gap: 14px; width: 100%; white-space: normal; }
  .ia-nav a::before { font-size: .72rem; }
  .ia-nav a::after { display: none; }
  .ia-nav a[aria-current="page"] { color: var(--royal-tint); }
  .ia-nav .ia-nav__mail { display: block; margin-top: 28px; font-family: var(--mono); font-size: .8rem; color: var(--royal-tint); word-break: break-all; }
  body.ia-locked { overflow: hidden; }
}
@media (min-width: 1081px) { .ia-nav .ia-nav__mail { display: none; } }

/* ================= HOME: HERO ================= */
.ia-hero { background: var(--coffee); color: var(--sand); padding: clamp(48px, 7vw, 96px) 0 0; position: relative; overflow: hidden; }
.ia-hero__grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(32px, 5vw, 72px); align-items: end; }
.ia-hero h1 { color: #fff7ee; margin-bottom: .35em; }
.ia-hero h1 em { color: var(--walnut-soft); }
.ia-hero__copy p { color: rgba(232,214,190,.86); max-width: 33em; }
.ia-hero__acts { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.ia-dim { position: relative; padding: 28px 0 0 28px; }
.ia-dim__top, .ia-dim__side { position: absolute; font-family: var(--mono); font-size: .66rem; letter-spacing: .14em; text-transform: uppercase; color: var(--walnut-soft); }
.ia-dim__top { top: 0; left: 28px; right: 0; height: 18px; border-left: 1px solid; border-right: 1px solid; display: flex; justify-content: center; align-items: center; }
.ia-dim__top::before { content: ""; position: absolute; left: 0; right: 0; top: 50%; border-top: 1px solid; }
.ia-dim__top span, .ia-dim__side span { position: relative; background: var(--coffee); padding: 0 10px; }
.ia-dim__side { left: 0; top: 28px; bottom: 0; width: 18px; border-top: 1px solid; border-bottom: 1px solid; display: flex; align-items: center; justify-content: center; }
.ia-dim__side::before { content: ""; position: absolute; top: 0; bottom: 0; left: 50%; border-left: 1px solid; }
.ia-dim__side span { writing-mode: vertical-rl; transform: rotate(180deg); padding: 10px 0; }
.ia-frame { position: relative; aspect-ratio: 16 / 9; background: #120a06; overflow: hidden; }
.ia-frame video { width: 100%; height: 100%; object-fit: contain; }

.ia-hero__terms {
  margin-top: clamp(48px, 6vw, 80px); border-top: 1px solid var(--line-dark);
  display: grid; grid-template-columns: repeat(5, minmax(0, 1fr));
}
.ia-hero__terms li { list-style: none; padding: 20px 16px 24px 0; font-family: var(--mono); font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: rgba(232,214,190,.7); border-right: 1px solid var(--line-dark); padding-left: 16px; }
.ia-hero__terms li:first-child { padding-left: 0; }
.ia-hero__terms li:last-child { border-right: 0; }
.ia-hero__terms b { display: block; font-family: var(--serif); font-weight: 400; font-size: 1.15rem; letter-spacing: 0; text-transform: none; color: var(--sand); margin-bottom: 2px; }
.ia-hero__terms ul { margin: 0; padding: 0; }

/* ================= HOME: PROLOGUE ================= */
.ia-prologue { padding: var(--sect) 0; }
.ia-prologue__grid { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 6fr) minmax(0, 3fr); gap: clamp(28px, 4vw, 56px); align-items: start; }
.ia-prologue h2 { font-size: clamp(1.8rem, 3.4vw, 2.7rem); }
.ia-prologue__body p:first-of-type::first-letter { font-family: var(--serif); float: left; font-size: 4.2em; line-height: .82; padding: 6px 12px 0 0; color: var(--walnut); }
.ia-prologue__body { color: var(--ink-soft); }
.ia-sketch figure { margin: 0; }
.ia-sketch img { width: 100%; border: 1px solid var(--line-light); padding: 8px; background: #fff; }
.ia-sketch figcaption, .ia-cap { font-family: var(--mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-soft); margin-top: 10px; }

/* ================= HOME: GALLERY (masonry, natural ratios) ================= */
.ia-plates { background: var(--walnut-deep); color: var(--sand); padding: var(--sect) 0; }
.ia-plates__head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: end; margin-bottom: clamp(36px, 5vw, 64px); }
.ia-plates__head h2 { color: #fff7ee; margin: 0; }
.ia-plates__head p { margin: 0; color: rgba(232,214,190,.8); }
.ia-masonry { columns: 3 300px; column-gap: clamp(16px, 2vw, 28px); }
.ia-masonry figure { break-inside: avoid; margin: 0 0 clamp(16px, 2vw, 28px); }
.ia-masonry img { width: 100%; height: auto; }
.ia-masonry figcaption { display: flex; justify-content: space-between; gap: 12px; padding-top: 10px; border-top: 1px solid var(--line-dark); margin-top: 10px; font-family: var(--mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: rgba(232,214,190,.75); }
.ia-masonry figcaption b { font-weight: 400; color: var(--sand); }

/* ================= HOME: HIGHLIGHTS ================= */
.ia-points { padding: var(--sect) 0; }
.ia-points__grid { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(32px, 5vw, 80px); }
.ia-points__intro { position: sticky; top: 140px; align-self: start; }
.ia-points ol { list-style: none; margin: 0; padding: 0; counter-reset: pt; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: clamp(24px, 4vw, 56px); }
.ia-points li { counter-increment: pt; border-top: 1px solid var(--line-light); padding: 26px 0 30px; }
.ia-points li::before { content: counter(pt, decimal-leading-zero) " /"; font-family: var(--mono); font-size: .72rem; letter-spacing: .14em; color: var(--walnut); display: block; margin-bottom: 14px; }
.ia-points li h3 { margin-bottom: .4em; }
.ia-points li p { color: var(--ink-soft); margin: 0; font-size: .97rem; }

/* ================= HOME: APPROACH ================= */
.ia-approach { background: var(--coffee); color: var(--sand); padding: var(--sect) 0; }
.ia-approach__grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(32px, 6vw, 96px); }
.ia-approach__media { position: sticky; top: 130px; align-self: start; }
.ia-approach__media img { width: 100%; height: auto; }
.ia-approach h2 { color: #fff7ee; }
.ia-steps { list-style: none; margin: 32px 0 0; padding: 0; counter-reset: st; }
.ia-steps li { counter-increment: st; display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 20px; padding: 24px 0; border-top: 1px dashed var(--line-dark); }
.ia-steps li::before { content: counter(st); font-family: var(--serif); font-size: 2.4rem; line-height: 1; color: var(--walnut-soft); }
.ia-steps h3 { color: #fff7ee; margin-bottom: .3em; }
.ia-steps p { margin: 0; color: rgba(232,214,190,.78); font-size: .97rem; }

/* ================= HOME: CATEGORY INDEX ================= */
.ia-index { padding: var(--sect) 0; }
.ia-index__head { display: flex; justify-content: space-between; align-items: end; gap: 24px; flex-wrap: wrap; margin-bottom: 40px; }
.ia-index__head h2 { margin: 0; max-width: 16em; }
.ia-index__list { list-style: none; margin: 0; padding: 0; border-bottom: 1px solid var(--ink); }
.ia-index__list a {
  display: grid; grid-template-columns: 80px minmax(0, 4fr) minmax(0, 6fr) 40px; gap: 24px; align-items: baseline;
  text-decoration: none; padding: 26px 0; border-top: 1px solid var(--ink); transition: background .25s, padding .25s;
}
.ia-index__list a:hover { background: var(--linen-2); padding-left: 14px; padding-right: 14px; }
.ia-index__no { font-family: var(--mono); font-size: .74rem; letter-spacing: .12em; color: var(--walnut); }
.ia-index__name { font-family: var(--serif); font-size: clamp(1.35rem, 2.4vw, 1.9rem); line-height: 1.2; }
.ia-index__desc { color: var(--ink-soft); font-size: .96rem; }
.ia-index__arrow { justify-self: end; font-size: 1.3rem; transition: transform .25s; }
.ia-index__list a:hover .ia-index__arrow { transform: translateX(6px); color: var(--royal); }

/* ================= HOME: INSIDE / OUTSIDE ================= */
.ia-duo { background: var(--linen-2); padding: var(--sect) 0; }
.ia-duo__grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 4fr) minmax(0, 3fr); gap: clamp(20px, 3vw, 40px); align-items: start; }
.ia-duo figure { margin: 0; }
.ia-duo figure:nth-child(2) { margin-top: clamp(40px, 8vw, 120px); }
.ia-duo__text { align-self: center; }
.ia-duo__text p { color: var(--ink-soft); }

/* ================= CTA ================= */
.ia-call { background: var(--walnut); color: var(--sand); padding: clamp(64px, 8vw, 112px) 0; position: relative; overflow: hidden; }
.ia-call::before {
  content: ""; position: absolute; right: -60px; top: -60px; width: 340px; height: 340px;
  border: 1px solid var(--line-dark); border-radius: 0 0 0 100%; pointer-events: none;
}
.ia-call__grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 48px; align-items: end; position: relative; }
.ia-call h2 { color: #fff7ee; margin: 0 0 .3em; }
.ia-call p { color: rgba(232,214,190,.86); margin: 0; max-width: 34em; }
.ia-call__side { display: flex; flex-direction: column; align-items: flex-start; gap: 18px; }
.ia-call__mail { font-family: var(--mono); font-size: .9rem; color: var(--sand); word-break: break-all; }

/* ================= INNER PAGE TITLE ================= */
.ia-title { background: var(--coffee); color: var(--sand); padding: clamp(56px, 8vw, 110px) 0 clamp(40px, 5vw, 64px); }
.ia-title__grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 40px; align-items: end; }
.ia-title h1 { color: #fff7ee; margin: 0; }
.ia-title p { color: rgba(232,214,190,.84); margin: 0; }
.ia-crumbs { font-family: var(--mono); font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 22px; color: var(--walnut-soft); }
.ia-crumbs a { text-decoration: none; color: var(--sand); }
.ia-crumbs a:hover { text-decoration: underline; }

/* ================= SERVICE ================= */
.ia-sheetnav { background: var(--linen-2); border-bottom: 1px solid var(--line-light); position: sticky; top: var(--ia-head-h, 108px); z-index: 50; }
.ia-sheetnav ul { list-style: none; margin: 0; padding: 12px 0; display: flex; flex-wrap: wrap; gap: 6px 22px; }
.ia-sheetnav a { font-family: var(--mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; text-decoration: none; color: var(--ink-soft); }
.ia-sheetnav a:hover { color: var(--royal); }
@media (max-width: 860px) { .ia-sheetnav { position: static; } }

.ia-brief { padding: var(--sect) 0; }
.ia-brief__grid { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.ia-brief__grid .ia-frame { box-shadow: 18px 18px 0 var(--sand); }

.ia-sheet { padding: clamp(56px, 7vw, 96px) 0; border-top: 1px solid var(--line-light); scroll-margin-top: 160px; }
.ia-sheet:nth-of-type(even) { background: #efe6da; }
.ia-sheet__grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(32px, 5vw, 80px); align-items: start; }
.ia-sheet--flip .ia-sheet__media { order: 2; }
.ia-sheet__media { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 14px; align-items: start; }
.ia-sheet__media--one { grid-template-columns: minmax(0, 1fr); }
.ia-sheet__media figure { margin: 0; }
.ia-sheet__media figure:nth-child(2) { margin-top: 48px; }
.ia-sheet__label { font-family: var(--mono); font-size: .7rem; letter-spacing: .16em; text-transform: uppercase; color: var(--walnut); display: flex; gap: 16px; border-bottom: 1px solid var(--ink); padding-bottom: 10px; margin-bottom: 24px; }
.ia-sheet__label span:last-child { margin-left: auto; }
.ia-sheet__text > p { color: var(--ink-soft); }
.ia-checks { list-style: none; padding: 0; margin: 24px 0 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 28px; }
.ia-checks li { padding: 11px 0 11px 26px; border-top: 1px solid var(--line-light); position: relative; font-size: .95rem; }
.ia-checks li::before { content: ""; position: absolute; left: 0; top: 19px; width: 12px; height: 12px; border: 1px solid var(--walnut); border-radius: 0 0 0 12px; }

.ia-glossary { background: var(--coffee); color: var(--sand); padding: var(--sect) 0; }
.ia-glossary h2 { color: #fff7ee; max-width: 15em; }
.ia-glossary dl { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 48px 0 0; border-left: 1px solid var(--line-dark); }
.ia-glossary dl > div { padding: 0 24px 36px; border-right: 1px solid var(--line-dark); }
.ia-glossary dl > div:nth-child(3n) { border-right: 0; }
.ia-glossary dt { font-family: var(--serif); font-size: 1.45rem; color: #fff7ee; margin-bottom: 8px; padding-top: 28px; border-top: 1px solid var(--line-dark); }
.ia-glossary dd { margin: 0; color: rgba(232,214,190,.78); font-size: .95rem; }

.ia-outputs { padding: var(--sect) 0; }
.ia-outputs__grid { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(32px, 5vw, 72px); }
.ia-table { width: 100%; border-collapse: collapse; font-size: .96rem; }
.ia-table th, .ia-table td { text-align: left; vertical-align: top; padding: 16px 16px 16px 0; border-top: 1px solid var(--line-light); }
.ia-table th { font-family: var(--serif); font-weight: 400; font-size: 1.12rem; width: 34%; }
.ia-table td { color: var(--ink-soft); }
.ia-table thead th { font-family: var(--mono); font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--walnut); border-top: 0; border-bottom: 1px solid var(--ink); }

.ia-faq { padding: 0 0 var(--sect); }
.ia-faq__grid { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(32px, 5vw, 72px); }
.ia-faq details { border-top: 1px solid var(--ink); }
.ia-faq details:last-child { border-bottom: 1px solid var(--ink); }
.ia-faq summary { cursor: pointer; list-style: none; padding: 20px 40px 20px 0; font-family: var(--serif); font-size: 1.22rem; position: relative; }
.ia-faq summary::-webkit-details-marker { display: none; }
.ia-faq summary::after { content: "+"; position: absolute; right: 4px; top: 16px; font-family: var(--sans); font-size: 1.5rem; color: var(--walnut); transition: transform .25s; }
.ia-faq details[open] summary::after { transform: rotate(45deg); }
.ia-faq details p { color: var(--ink-soft); padding-right: 40px; }

/* ================= LEGAL — shared base ================= */
.ia-legal { padding: clamp(48px, 6vw, 88px) 0 var(--sect); }
.ia-legal h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); margin-top: 1.6em; }
.ia-legal h3 { margin-top: 1.4em; }
.ia-legal p, .ia-legal li { color: var(--ink-soft); }
.ia-legal a { color: var(--royal-deep); }
.ia-updated { font-family: var(--mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--walnut-soft); margin-top: 18px !important; }

/* Privacy: sidebar contents + prose */
.ia-priv { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 8fr); gap: clamp(32px, 5vw, 80px); }
.ia-priv__toc { position: sticky; top: 140px; align-self: start; border-left: 2px solid var(--walnut); padding-left: 20px; }
.ia-priv__toc p { font-family: var(--mono); font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--walnut); margin-bottom: 12px; }
.ia-priv__toc ol { margin: 0; padding-left: 18px; font-size: .9rem; }
.ia-priv__toc li { margin-bottom: 6px; }
.ia-priv__toc a { color: var(--ink); text-decoration: none; }
.ia-priv__toc a:hover { color: var(--royal); }
.ia-priv__body { max-width: 46em; }
.ia-priv__body > section { scroll-margin-top: 140px; }
.ia-priv__body > section:first-child h2 { margin-top: 0; }
.ia-plain { font-family: var(--serif); font-size: 1.3rem; line-height: 1.55; color: var(--ink) !important; border-bottom: 1px solid var(--line-light); padding-bottom: 1.2em; }

/* Terms: numbered clauses on a ruled sheet */
.ia-terms { max-width: 920px; }
.ia-terms__defs { width: 100%; border-collapse: collapse; margin: 0 0 24px; border: 1px solid var(--ink); }
.ia-terms__defs th, .ia-terms__defs td { padding: 14px 18px; border: 1px solid var(--line-light); text-align: left; vertical-align: top; }
.ia-terms__defs th { font-family: var(--mono); font-weight: 400; font-size: .76rem; letter-spacing: .08em; text-transform: uppercase; width: 30%; background: var(--linen-2); color: var(--ink); }
.ia-terms__defs td { color: var(--ink-soft); }
.ia-clause { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 24px; border-top: 1px solid var(--ink); padding: 28px 0 8px; }
.ia-clause__no { font-family: var(--serif); font-size: 2.6rem; line-height: 1; color: var(--walnut); }
.ia-clause h2 { margin-top: 0 !important; font-size: clamp(1.35rem, 2.2vw, 1.7rem); }
.ia-clause ol { list-style: none; padding: 0; margin: 0 0 16px; }
.ia-clause ol li { padding-left: 52px; position: relative; margin-bottom: 12px; }
.ia-clause ol li > span:first-child { position: absolute; left: 0; font-family: var(--mono); font-size: .8rem; color: var(--walnut); top: 3px; }

/* Cookie: question cards in a two-column Q&A rhythm */
.ia-ck__summary { background: var(--coffee); color: var(--sand); padding: clamp(24px, 4vw, 40px); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin-bottom: clamp(40px, 5vw, 64px); }
.ia-ck__summary div { border-top: 1px solid var(--line-dark); padding-top: 16px; }
.ia-ck__summary b { display: block; font-family: var(--serif); font-weight: 400; font-size: 1.25rem; color: #fff7ee; margin-bottom: 6px; }
.ia-ck__summary span { font-size: .93rem; color: rgba(232,214,190,.82); }
.ia-qa { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: clamp(24px, 4vw, 64px); padding: 32px 0; border-top: 1px dashed var(--line-light); }
.ia-qa h2 { margin: 0 !important; font-size: clamp(1.35rem, 2.3vw, 1.8rem); font-style: italic; }
.ia-qa > div > p:last-child { margin-bottom: 0; }
.ia-ck__table { width: 100%; border-collapse: collapse; font-size: .94rem; margin: 6px 0 14px; }
.ia-ck__table th, .ia-ck__table td { border-bottom: 1px solid var(--line-light); padding: 12px 10px 12px 0; text-align: left; vertical-align: top; }
.ia-ck__table thead th { font-family: var(--mono); font-weight: 400; font-size: .68rem; text-transform: uppercase; letter-spacing: .12em; color: var(--walnut); border-bottom: 1px solid var(--ink); }
.ia-ck__table td { color: var(--ink-soft); }
.ia-pill { display: inline-block; font-family: var(--mono); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; padding: 3px 8px; border: 1px solid currentColor; white-space: nowrap; }
.ia-pill--no { color: var(--walnut); }
.ia-pill--yes { color: var(--royal-deep); }
.ia-browsers { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 28px; margin: 6px 0 0; }
.ia-browsers div { border-top: 1px solid var(--line-light); padding: 12px 0; }
.ia-browsers dt { font-weight: 600; color: var(--ink); font-size: .95rem; }
.ia-browsers dd { margin: 2px 0 0; color: var(--ink-soft); font-size: .92rem; }

/* ================= CONTACT ================= */
.ia-contact { padding: var(--sect) 0; }
.ia-contact__grid { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: clamp(32px, 5vw, 80px); align-items: start; }
.ia-titleblock { border: 2px solid var(--ink); background: #fbf7f1; }
.ia-titleblock__row { display: grid; grid-template-columns: 130px minmax(0, 1fr); border-bottom: 1px solid var(--ink); }
.ia-titleblock__row:last-child { border-bottom: 0; }
.ia-titleblock__row > span { font-family: var(--mono); font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--walnut); padding: 18px 16px; border-right: 1px solid var(--ink); }
.ia-titleblock__row > div { padding: 16px 18px; font-size: 1.02rem; min-width: 0; overflow-wrap: anywhere; }
.ia-titleblock__row--big > div { font-family: var(--serif); font-size: clamp(1.2rem, 2.4vw, 1.6rem); }
.ia-titleblock a { color: var(--royal-deep); }
.ia-titleblock__head { background: var(--coffee); color: var(--sand); padding: 16px 18px; display: flex; justify-content: space-between; gap: 12px; font-family: var(--mono); font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; }
.ia-contact__notes { margin-top: 40px; }
.ia-contact__notes ol { margin: 0; padding: 0; list-style: none; counter-reset: cn; }
.ia-contact__notes li { counter-increment: cn; display: grid; grid-template-columns: 44px minmax(0, 1fr); padding: 14px 0; border-top: 1px solid var(--line-light); color: var(--ink-soft); }
.ia-contact__notes li::before { content: counter(cn, lower-alpha) "."; font-family: var(--serif); font-size: 1.2rem; color: var(--walnut); }
.ia-contact__visual figure { margin: 0; }
.ia-contact__visual figure + figure { margin-top: 18px; }
.ia-contact__pair { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; align-items: start; margin-top: 18px; }
.ia-contact__pair figure { margin: 0 !important; }

/* ================= FOOTER (Wisteria Blue) ================= */
.ia-foot { background: var(--wisteria); color: var(--coffee); position: relative; overflow: hidden; }
.ia-foot__top { padding: clamp(56px, 7vw, 96px) 0 clamp(36px, 4vw, 56px); display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 40px; align-items: end; border-bottom: 1px solid rgba(43,26,18,.3); }
.ia-foot__say { font-family: var(--serif); font-size: clamp(2rem, 4.6vw, 3.8rem); line-height: 1.05; margin: 0; }
.ia-foot__say em { color: var(--royal-deep); }
.ia-foot__mail { justify-self: end; text-align: right; }
.ia-foot__mail small { display: block; font-family: var(--mono); font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; margin-bottom: 8px; }
.ia-foot__mail a { font-family: var(--serif); font-size: clamp(1.05rem, 2vw, 1.45rem); text-decoration: none; border-bottom: 1px solid var(--coffee); overflow-wrap: anywhere; }
.ia-foot__mail a:hover { color: var(--royal-deep); border-color: var(--royal-deep); }
.ia-foot__mid { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 5fr) minmax(0, 3fr); gap: 40px; padding: 44px 0; }
.ia-foot__brand { display: flex; gap: 14px; align-items: flex-start; }
.ia-foot__brand svg { width: 52px; height: 52px; flex-shrink: 0; }
.ia-foot__brand p { margin: 0; font-size: .94rem; max-width: 24em; }
.ia-foot h2 { font-family: var(--mono); font-size: .7rem; letter-spacing: .16em; text-transform: uppercase; margin: 0 0 14px; font-weight: 400; }
.ia-foot__pages ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 24px; }
.ia-foot__pages a { display: block; padding: 7px 0; text-decoration: none; border-bottom: 1px dotted rgba(43,26,18,.4); font-size: .98rem; }
.ia-foot__pages a:hover { color: var(--royal-deep); }
.ia-foot__pages a[aria-current="page"] { font-weight: 600; }
.ia-foot address { font-style: normal; font-size: .96rem; overflow-wrap: anywhere; }
.ia-foot__base { background: var(--coffee); color: var(--sand); font-size: .8rem; }
.ia-foot__base .ia-wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px 28px; padding-top: 16px; padding-bottom: 16px; }
.ia-scale { display: flex; align-items: flex-end; gap: 0; font-family: var(--mono); font-size: .62rem; }
.ia-scale i { display: block; width: 34px; height: 7px; border: 1px solid var(--sand); border-right: 0; }
.ia-scale i:nth-child(odd) { background: var(--sand); }
.ia-scale i:last-of-type { border-right: 1px solid var(--sand); }
.ia-scale span { margin-left: 10px; letter-spacing: .1em; text-transform: uppercase; }
.ia-foot__base a { color: var(--sand); }
.ia-totop { font-family: var(--mono); text-transform: uppercase; letter-spacing: .12em; font-size: .7rem; text-decoration: none; }

/* ================= 404 ================= */
.ia-lost { background: var(--coffee); color: var(--sand); padding: clamp(80px, 12vw, 160px) 0; text-align: center; }
.ia-lost h1 { color: #fff7ee; }
.ia-lost p { max-width: 32em; margin: 0 auto 28px; color: rgba(232,214,190,.84); }
.ia-lost svg { width: 120px; height: 120px; margin: 0 auto 28px; }
.ia-lost__links { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

/* ================= REVEAL ================= */
.ia-js .ia-rise { opacity: 0; transform: translateY(22px); transition: opacity .8s ease, transform .8s ease; }
.ia-js .ia-rise.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ia-js .ia-rise { opacity: 1; transform: none; transition: none; }
}

/* ================= RESPONSIVE ================= */
@media (max-width: 1080px) {
  .ia-hero__grid { grid-template-columns: minmax(0, 1fr); }
  .ia-hero__terms { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .ia-hero__terms li:nth-child(3) { border-right: 0; }
  .ia-hero__terms li:nth-child(4) { padding-left: 0; }
  .ia-hero__terms li:nth-child(n+4) { border-top: 1px solid var(--line-dark); }
  .ia-prologue__grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .ia-prologue__grid > :first-child { grid-column: 1 / -1; }
  .ia-duo__grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .ia-duo__text { grid-column: 1 / -1; order: -1; max-width: 40em; }
  .ia-glossary dl { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ia-glossary dl > div:nth-child(3n) { border-right: 1px solid var(--line-dark); }
  .ia-glossary dl > div:nth-child(2n) { border-right: 0; }
  .ia-foot__mid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .ia-foot__brand { grid-column: 1 / -1; }
}
@media (max-width: 860px) {
  body { font-size: 16px; }
  .ia-plates__head, .ia-points__grid, .ia-approach__grid, .ia-call__grid, .ia-title__grid,
  .ia-brief__grid, .ia-sheet__grid, .ia-outputs__grid, .ia-faq__grid, .ia-priv, .ia-contact__grid,
  .ia-qa, .ia-foot__top { grid-template-columns: minmax(0, 1fr); }
  .ia-points__intro, .ia-approach__media, .ia-priv__toc { position: static; }
  .ia-approach__media { max-width: 460px; }
  .ia-sheet--flip .ia-sheet__media { order: 0; }
  .ia-index__list a { grid-template-columns: 52px minmax(0, 1fr) 28px; gap: 6px 16px; }
  .ia-index__desc { grid-column: 2 / 3; }
  .ia-index__arrow { grid-row: 1; grid-column: 3; }
  .ia-foot__mail { justify-self: start; text-align: left; }
  .ia-brief__grid .ia-frame { box-shadow: 10px 10px 0 var(--sand); }
  .ia-ck__summary { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 600px) {
  .ia-brand__word small { display: none; }
  .ia-brand__word b { font-size: 1.12rem; }
  .ia-brand svg { width: 36px; height: 36px; }
  .ia-head__bar .ia-wrap { min-height: 66px; }
  .ia-dim { padding: 22px 0 0 0; }
  .ia-dim__side { display: none; }
  .ia-dim__top { left: 0; }
  .ia-hero__terms { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ia-hero__terms li { border-right: 0 !important; padding-left: 0 !important; border-top: 1px solid var(--line-dark); }
  .ia-hero__terms li:nth-child(odd) { padding-right: 12px; }
  .ia-hero__terms li:last-child { grid-column: 1 / -1; }
  .ia-prologue__grid { grid-template-columns: minmax(0, 1fr); }
  .ia-sketch { max-width: 360px; }
  .ia-masonry { columns: 1; }
  .ia-points ol, .ia-checks, .ia-browsers { grid-template-columns: minmax(0, 1fr); }
  .ia-steps li { grid-template-columns: 44px minmax(0, 1fr); gap: 14px; }
  .ia-steps li::before { font-size: 1.9rem; }
  .ia-duo__grid { grid-template-columns: minmax(0, 1fr); }
  .ia-duo figure:nth-child(2) { margin-top: 0; }
  .ia-sheet__media figure:nth-child(2) { margin-top: 28px; }
  .ia-glossary dl { grid-template-columns: minmax(0, 1fr); }
  .ia-glossary dl > div { border-right: 0 !important; }
  .ia-table th, .ia-table td { display: block; width: 100%; padding-right: 0; }
  .ia-table td { border-top: 0; padding-top: 0; }
  .ia-table thead { display: none; }
  .ia-clause { grid-template-columns: minmax(0, 1fr); gap: 6px; }
  .ia-clause ol li { padding-left: 42px; }
  .ia-ck__table thead { display: none; }
  .ia-ck__table tr { display: block; border-bottom: 1px solid var(--line-light); padding: 10px 0; }
  .ia-ck__table td { display: block; border: 0; padding: 3px 0; }
  .ia-titleblock__row { grid-template-columns: minmax(0, 1fr); }
  .ia-titleblock__row > span { border-right: 0; border-bottom: 1px dashed var(--line-light); padding: 10px 16px 6px; }
  .ia-foot__mid { grid-template-columns: minmax(0, 1fr); }
  .ia-foot__pages ul { grid-template-columns: minmax(0, 1fr); }
  .ia-terms__defs th, .ia-terms__defs td { display: block; width: 100%; }
}
.ia-nav .ia-nav__mail::before { content: none; }