/* Hallmark · macrostructure: Side Gallery · tone: visual · anchor hue: cobalt */
/* Hallmark · pre-emit critique: P5 H4 E4 S5 R5 V4 · refinement of approved direction 2 */
:root {
  --paper: #f9f9fb;
  --surface: #ffffff;
  --ink: #111111;
  --muted: #63636a;
  --line: #dedee4;
  --accent: #2563eb;
  --accent-soft: #eaf0ff;
  --backdrop: rgb(17 17 17 / 75%);
  --font-body: Inter, 'Noto Sans SC', sans-serif;
  --space-xs: .5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --ease-in: cubic-bezier(.7, 0, .84, 0);
  --ease-in-out: cubic-bezier(.65, 0, .35, 1);
}

* { box-sizing: border-box; }
html, body { margin: 0; overflow-x: clip; }
html { scroll-behavior: smooth; }
body { background: var(--paper); color: var(--ink); font: 400 1rem/1.75 var(--font-body); }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
img { display: block; max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
::selection { background: var(--accent); color: var(--surface); }
h1, h2, h3, h4 { font-style: normal; text-wrap: balance; }
p { text-wrap: pretty; }
figure, dl, dd { margin: 0; }
section[id], footer[id] { scroll-margin-top: var(--space-lg); }
.skip-link { position: fixed; left: var(--space-sm); top: var(--space-sm); z-index: 100; background: var(--ink); color: var(--surface); padding: .75rem var(--space-sm); transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }
.eyebrow { font-size: .75rem; line-height: 1.6; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); }
.brand { font-size: .875rem; font-weight: 600; letter-spacing: .1em; white-space: nowrap; }
.layout { display: grid; grid-template-columns: 250px minmax(0, 1fr); max-width: 1600px; margin-inline: auto; }
.side { position: sticky; top: 0; align-self: start; height: 100vh; height: 100dvh; overflow-y: auto; padding: 34px 24px 26px 32px; border-right: 1px solid var(--line); background: var(--surface); display: flex; flex-direction: column; gap: var(--space-lg); }
.side-intro { margin-top: var(--space-md); }
.side h1 { font-size: 2rem; line-height: 1.4; font-weight: 400; letter-spacing: -.04em; margin: var(--space-sm) 0; overflow-wrap: anywhere; }
.side-intro p { font-size: .875rem; color: var(--muted); margin: 0; }
.sidenav { display: grid; gap: 0; }
.sidenav a { min-height: 44px; display: flex; align-items: center; padding: .55rem 0; border-bottom: 1px solid var(--line); font-size: .875rem; white-space: nowrap; color: var(--muted); transition: color .2s var(--ease-out); }
.sidenav a[aria-current], .sidenav a:hover { color: var(--accent); }
.sidenav a[aria-current]::after { content: '↗'; margin-left: auto; }
.side-foot { margin-top: auto; font-size: .75rem; color: var(--muted); padding-top: var(--space-md); }
.content { min-width: 0; padding: 0 54px 28px; }
.topline { min-height: 74px; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: .5rem var(--space-sm); padding-block: var(--space-sm); font-size: .75rem; letter-spacing: .08em; color: var(--muted); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: var(--space-md); margin-bottom: var(--space-md); }
.section-head h2 { font-size: 1.875rem; line-height: 1.2; font-weight: 400; letter-spacing: -.045em; margin: .55rem 0 0; }
.section-head > p { max-width: 310px; font-size: .875rem; color: var(--muted); margin: 0; }
.gallery-head { padding-top: 38px; }
.gallery-head h2 { font-size: clamp(2.125rem, 4.2vw, 3.75rem); line-height: 1.12; }
.project-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-sm); }
.project { display: flex; flex-direction: column; min-width: 0; }
.project-visual { position: relative; aspect-ratio: 1 / 1; background: var(--surface); border: 1px solid var(--line); overflow: hidden; }
.project-visual picture { display: block; width: 100%; height: 100%; }
.project-visual img { width: 100%; height: 100%; object-fit: contain; }
.project-open { position: absolute; right: var(--space-sm); bottom: var(--space-sm); background: var(--surface); color: var(--ink); border: 1px solid var(--line); padding: .45rem .8rem; font-size: .75rem; white-space: nowrap; }
.project:hover .project-open, .project:focus-visible .project-open { background: var(--ink); color: var(--surface); }
.project-label { display: flex; justify-content: space-between; gap: var(--space-sm); width: 100%; font-size: .75rem; color: var(--muted); }
.project-label > span:first-child { color: var(--accent); }
.project-action { display: flex; justify-content: space-between; width: 100%; padding-top: .4rem; color: var(--accent); font-size: .8125rem; white-space: nowrap; }
.project-data { display: flex; flex-direction: column; align-items: flex-start; flex: 1; gap: .6rem; border-bottom: 1px solid var(--line); padding: var(--space-sm) 0 var(--space-md); }
.project-data h3 { font-weight: 500; font-size: 1.125rem; line-height: 1.4; margin: 0 0 .4rem; overflow-wrap: anywhere; text-wrap: pretty; }
.project-data p { font-size: .875rem; color: var(--muted); margin: 0; }
.project-type { font-size: .75rem; color: var(--accent); white-space: nowrap; padding-top: .1rem; margin-top: auto; }
.section { padding-block: 56px; border-bottom: 1px solid var(--line); }
/* Hallmark · pre-emit critique: P5 H5 E4 S5 R5 V4 · component-scope, existing gallery tokens */
.small-project-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-sm); align-items: start; }
.small-project-card { display: flex; min-width: 0; flex-direction: column; width: 100%; padding: .65rem; border: 1px solid var(--line); background: var(--surface); text-align: left; transition: border-color .2s var(--ease-out), transform .2s var(--ease-out); }
.small-project-card:hover { border-color: var(--accent); }
.small-project-card:active { transform: translateY(1px); }
.small-project-visual { display: block; position: relative; width: 100%; aspect-ratio: 3 / 4; overflow: hidden; background: var(--paper); }
.small-project-visual picture, .small-project-visual img { display: block; position: absolute; inset: 0; width: 100%; height: 100%; }
.small-project-visual img { object-fit: contain; }
.small-project-data { display: grid; gap: .35rem; padding-top: .75rem; }
.small-project-meta { display: flex; justify-content: space-between; gap: .5rem; color: var(--accent); font-size: .75rem; }
.small-project-title { font-size: 1rem; line-height: 1.4; font-weight: 500; overflow-wrap: anywhere; }
.small-project-description { color: var(--muted); font-size: .8125rem; line-height: 1.6; }
.small-project-empty { display: grid; grid-template-columns: minmax(100px, .3fr) minmax(0, 1fr) auto; align-items: center; gap: var(--space-md); padding-block: var(--space-md); border-block: 1px solid var(--line); }
.small-project-empty p { margin: 0; color: var(--muted); }
.small-project-empty > span:last-child { color: var(--muted); font-size: .75rem; }
.visual-exploration-head h2 { margin: 0; }
.visual-subsection + .visual-subsection { margin-top: var(--space-lg); padding-top: var(--space-lg); border-top: 1px solid var(--line); }
.visual-subsection-head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-md); margin-bottom: var(--space-md); }
.visual-subsection-head h3 { margin: 0; font-size: 1.25rem; line-height: 1.35; font-weight: 400; }
.visual-subsection-head p { max-width: 310px; margin: 0; color: var(--muted); font-size: .8125rem; }
.lab-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .65rem; }
.lab-tile { min-width: 0; width: 100%; padding: .65rem; border: 1px solid var(--line); background: var(--surface); text-align: left; transition: border-color .2s var(--ease-out); }
.lab-tile:hover { border-color: var(--accent); }
.lab-tile img { width: 100%; height: 180px; object-fit: contain; }
.lab-tile figcaption { display: flex; justify-content: space-between; gap: .5rem; margin-top: .65rem; color: var(--muted); font-size: .75rem; }
.lab-tile figcaption span:last-child { color: var(--accent); }
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-block: 1px solid var(--line); }
.step { min-width: 0; padding: var(--space-md) var(--space-sm); border-right: 1px solid var(--line); }
.step:first-child { padding-left: 0; }
.step:last-child { border-right: 0; }
.step-number { font-size: .75rem; color: var(--accent); }
.step h3 { font-size: 1.0625rem; font-weight: 500; line-height: 1.4; margin: .75rem 0 .3rem; overflow-wrap: anywhere; }
.step h4 { font-size: .875rem; font-weight: 400; color: var(--muted); margin: 0 0 .6rem; }
.step p { font-size: .875rem; color: var(--muted); margin: 0; }
.about { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: 36px; }
.about p { font-size: .875rem; color: var(--muted); margin: 0; }
.education { margin-top: var(--space-md); border-top: 1px solid var(--line); padding-top: var(--space-md); }
.education h3 { font-size: 1rem; font-weight: 500; margin: .5rem 0; }
.education p + p { margin-top: .5rem; }
.fact + .fact { margin-top: var(--space-md); }
.fact h3 { font-size: .75rem; font-weight: 500; letter-spacing: .08em; color: var(--muted); margin: 0 0 .75rem; }
.chips { display: flex; flex-wrap: wrap; gap: .45rem; padding: 0; margin: 0; list-style: none; }
.chips li { background: var(--surface); border: 1px solid var(--line); padding: .35rem .65rem; font-size: .875rem; }
.contact { padding-block: var(--space-xl); }
.contact h2 { font-size: clamp(2rem, 4.4vw, 3.25rem); font-weight: 400; line-height: 1.12; letter-spacing: -.05em; margin: .75rem 0 var(--space-md); max-width: 720px; overflow-wrap: anywhere; }
.contact-info { display: flex; flex-wrap: wrap; gap: .65rem var(--space-md); font-size: .875rem; }
.contact-info a { color: var(--accent); overflow-wrap: anywhere; }
.contact-info a:hover { text-decoration: underline; text-underline-offset: .3em; }
.site-footer { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--space-sm); border-top: 1px solid var(--line); padding-top: var(--space-sm); font-size: .75rem; color: var(--muted); }
.site-footer p { margin: 0; }
.site-footer a { white-space: nowrap; }
.lightbox { width: min(1100px, calc(100vw - 32px)); max-height: calc(100vh - 32px); max-height: calc(100dvh - 32px); padding: 0; background: var(--surface); color: var(--ink); border: 1px solid var(--line); }
.lightbox::backdrop { background: var(--backdrop); }
.lightbox-head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-sm); padding: .5rem var(--space-sm); border-bottom: 1px solid var(--line); }
.lightbox-head h2 { font-size: 1rem; font-weight: 500; margin: 0; }
.lightbox-close { min-height: 44px; border: 0; background: var(--surface); padding: .5rem; font-size: .875rem; }
.lightbox-image { width: 100%; height: auto; max-height: calc(100vh - 180px); max-height: calc(100dvh - 180px); object-fit: contain; padding: var(--space-sm); }
.lightbox-tools { display: flex; align-items: center; justify-content: space-between; padding: .25rem var(--space-sm); border-top: 1px solid var(--line); gap: var(--space-sm); font-size: .8125rem; }
.lightbox-tools button { min-height: 44px; padding: .5rem; border: 0; background: var(--surface); white-space: nowrap; }
.lightbox-tools button:hover:not(:disabled) { color: var(--accent); }
.lightbox-tools button:disabled { color: var(--muted); opacity: .5; cursor: default; }
.lightbox-head h2 { min-width: 0; overflow-wrap: anywhere; }
.lightbox-close { white-space: nowrap; flex-shrink: 0; }
.lightbox-open { overflow-y: hidden; }

/* Case pages share the gallery's typography, rules, navigation and spacing. */
.case-page { width: min(1240px, calc(100% - 64px)); margin-inline: auto; }
.case-nav { display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); min-height: 80px; border-bottom: 1px solid var(--line); }
.case-nav > a { font-size: .875rem; white-space: nowrap; }
.case-nav nav { display: flex; gap: var(--space-md); font-size: .75rem; }
.case-nav nav a { white-space: nowrap; }
.case-hero { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: var(--space-xl); padding-block: var(--space-xl); align-items: center; }
.case-hero h1 { font-weight: 400; font-size: clamp(2.5rem, 5vw, 4.5rem); line-height: 1.13; letter-spacing: -.06em; margin: var(--space-sm) 0; overflow-wrap: anywhere; }
.case-subtitle { color: var(--muted); font-size: 1rem; margin: 0 0 var(--space-lg); }
.case-meta { display: grid; gap: var(--space-sm); font-size: .875rem; }
.case-meta dt { font-size: .75rem; color: var(--muted); margin-bottom: .3rem; }
.case-cover { background: var(--surface); border: 1px solid var(--line); }
.case-cover picture { display: block; }
.case-cover img { width: 100%; height: auto; max-height: 640px; object-fit: contain; }
.case-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-md); margin-top: var(--space-lg); }
.text-link { color: var(--accent); font-size: .875rem; white-space: nowrap; padding-block: .75rem; }
.text-link:hover { text-decoration: underline; text-underline-offset: .3em; }
.case-index { position: sticky; z-index: 10; top: 0; display: flex; flex-wrap: wrap; align-items: center; gap: .25rem var(--space-lg); min-height: 64px; padding-block: .5rem; background: var(--paper); border-block: 1px solid var(--line); }
.case-index a { color: var(--muted); min-height: 44px; display: inline-flex; align-items: center; font-size: .875rem; white-space: nowrap; }
.case-index a:hover, .case-index a:focus-visible, .case-index a[aria-current] { color: var(--accent); }
.case-page section[id] { scroll-margin-top: 90px; }
.case-overview { display: grid; grid-template-columns: minmax(0,.65fr) minmax(0,1.35fr); gap: var(--space-xl); }
.case-overview h2 { margin-top: .75rem; }
.chapter-heading { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,.7fr); align-items: end; gap: var(--space-xl); margin-bottom: var(--space-lg); }
.chapter-heading h2 { margin: .75rem 0 0; max-width: 14em; font-size: clamp(1.875rem,3vw,2.75rem); line-height: 1.4; }
.chapter-heading > p { font-size: .9375rem; color: var(--muted); margin: 0; }
.case-gallery { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: var(--space-xl) var(--space-lg); align-items: start; }
.case-figure { min-width: 0; }
.case-figure-wide { grid-column: 1 / -1; }
.case-zoom { display: block; position: relative; width: 100%; padding: 0; background: var(--surface); border: 1px solid var(--line); cursor: zoom-in; }
.case-zoom picture { display: block; }
.case-zoom img { width: 100%; height: auto; }
.case-figure-wide .case-zoom img { max-height: 840px; object-fit: contain; }
.zoom-hint { position: absolute; right: .75rem; bottom: .75rem; background: var(--surface); border: 1px solid var(--line); padding: .25rem .6rem; font-size: .75rem; white-space: nowrap; }
.case-zoom:hover .zoom-hint { color: var(--accent); }
.case-figure figcaption { padding-top: var(--space-sm); }
.case-figure h3 { font-weight: 500; margin: 0 0 .35rem; font-size: 1rem; }
.case-figure figcaption p { font-size: .875rem; color: var(--muted); max-width: 66ch; margin: 0; }
.case-section { padding-block: var(--space-xl); border-top: 1px solid var(--line); }
.case-section h2 { font-size: 1.875rem; font-weight: 400; letter-spacing: -.04em; line-height: 1.25; margin: 0 0 var(--space-md); }
.case-prose { max-width: 72ch; }
.case-prose p { font-size: 1rem; color: var(--muted); margin: 0 0 var(--space-sm); }
.case-thinking-list { list-style: none; margin: 0; padding: 0; }
.case-thinking-list li + li { margin-top: var(--space-md); padding-top: var(--space-md); border-top: 1px solid var(--line); }
.case-thinking-list h3 { margin: 0 0 var(--space-xs); font-size: 1.0625rem; line-height: 1.5; font-weight: 500; }
.case-thinking-list p:last-child { margin-bottom: 0; }
.scope-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); padding: 0; margin: 0; list-style: none; border-block: 1px solid var(--line); }
.scope-list li { padding: var(--space-md) var(--space-sm); border-right: 1px solid var(--line); }
.scope-list li:first-child { padding-left: 0; }
.scope-list li:last-child { border-right: 0; }
.scope-list h3 { font-size: 1rem; font-weight: 500; margin: .5rem 0; }
.scope-list p { font-size: .875rem; color: var(--muted); margin: 0; }
.pdf-panel { display: flex; align-items: center; justify-content: space-between; gap: var(--space-lg); padding: var(--space-lg); background: var(--surface); border: 1px solid var(--line); }
.pdf-panel h2 { margin: .5rem 0; }
.pdf-panel p { color: var(--muted); font-size: .875rem; margin: 0; }
.pdf-panel .pdf-note { margin-top: .5rem; font-size: .75rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: .75rem var(--space-md); background: var(--accent); color: var(--surface); font-size: .875rem; white-space: nowrap; }
.button:hover { background: var(--ink); }
.button:active { background: var(--ink); }
.button-compact { min-height: 44px; padding: .5rem .65rem; font-size: .8125rem; }
.button-secondary { background: var(--surface); color: var(--ink); border: 1px solid var(--line); }
.button-secondary:hover, .button-secondary:active { background: var(--accent-soft); color: var(--accent); }
.side-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: center; gap: var(--space-xs); margin-top: var(--space-md); max-width: 260px; }
.side-actions .button-compact { padding: .5rem .4rem; font-size: .75rem; }
.side-actions .text-link { display: flex; justify-content: center; padding: .5rem .4rem; font-size: .75rem; }
.contact-layout { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: var(--space-xl); align-items: start; }
.contact-description { margin: 0; max-width: 52ch; color: var(--muted); font-size: .9375rem; }
.contact-actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-xs) var(--space-sm); margin-top: var(--space-md); }
.resume-note { margin: var(--space-sm) 0 0; color: var(--muted); font-size: .75rem; }
.contact-info { display: grid; gap: var(--space-md); padding-top: var(--space-sm); }
.contact-info > div { min-width: 0; padding-bottom: var(--space-sm); border-bottom: 1px solid var(--line); }
.contact-info dt { margin-bottom: var(--space-xs); color: var(--muted); font-size: .75rem; }
.contact-info dd { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-xs) var(--space-sm); }
.contact-info a { white-space: nowrap; }
.copy-button { min-height: 44px; padding: .5rem var(--space-xs); border: 1px solid var(--line); background: var(--surface); color: var(--accent); font-size: .75rem; white-space: nowrap; }
.copy-button:hover, .copy-button:active { background: var(--accent-soft); }
.copy-button:disabled { opacity: .6; cursor: default; }
.copy-button[hidden] { display: none; }
.contact-copy-status { min-height: 1.75em; margin: var(--space-xs) 0 0; color: var(--muted); font-size: .75rem; }
.case-contact { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); align-items: center; gap: var(--space-lg); padding-block: var(--space-xl); border-top: 1px solid var(--line); }
.case-contact h2 { margin: var(--space-xs) 0; font-size: clamp(1.5rem, 2.5vw, 2rem); line-height: 1.4; font-weight: 400; overflow-wrap: anywhere; }
.case-contact p { margin: 0; color: var(--muted); font-size: .875rem; }
.case-contact .contact-actions { justify-content: end; margin-top: 0; }
.case-pagination { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--space-sm) var(--space-md); padding-block: var(--space-lg); border-top: 1px solid var(--line); font-size: .875rem; }
.case-pagination a { padding-block: .5rem; }
.case-page > .site-footer { padding-bottom: var(--space-lg); }

@media (min-width: 1600px) {
  .layout { border-inline: 1px solid var(--line); }
}
@media (max-width: 1200px) {
  .layout { grid-template-columns: 220px minmax(0, 1fr); }
  .side { padding-inline: 24px; }
  .content { padding-inline: 32px; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .step:nth-child(2) { border-right: 0; }
  .step:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .step:nth-child(3) { padding-left: 0; }
  .small-project-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lab-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 960px) {
  .layout { grid-template-columns: 200px minmax(0, 1fr); }
  .side { padding-inline: 20px; }
  .side h1 { font-size: 1.75rem; }
  .content { padding-inline: 24px; }
  .project-grid { grid-template-columns: minmax(0, 1fr); gap: var(--space-lg); }
  .project-visual { aspect-ratio: 4 / 3; }
  .section-head { display: block; }
  .section-head > p { margin-top: .75rem; max-width: none; }
  .contact-layout { grid-template-columns: minmax(0, 1fr); gap: var(--space-lg); }
  .visual-subsection-head { display: block; }
  .visual-subsection-head p { margin-top: .5rem; max-width: none; }
  .small-project-empty { grid-template-columns: minmax(0, 1fr); gap: .4rem; }
  .about { grid-template-columns: minmax(0, 1fr); gap: var(--space-lg); }
  .case-hero { gap: var(--space-lg); }
  .case-cover img { height: auto; }
  .scope-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .scope-list li:nth-child(2) { border-right: 0; }
  .scope-list li:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .scope-list li:nth-child(3) { padding-left: 0; }
}
@media (max-width: 760px) {
  .layout { display: block; }
  .side { position: relative; height: auto; overflow: visible; border-right: 0; border-bottom: 1px solid var(--line); padding: var(--space-md) 20px var(--space-sm); gap: var(--space-md); }
  .side-intro { margin: 0; max-width: 620px; }
  .side h1 { font-size: clamp(1.875rem, 6vw, 2.5rem); max-width: 16ch; }
  .side-foot { display: none; }
  .sidenav { display: flex; flex-wrap: wrap; gap: 0 var(--space-sm); padding-bottom: .3rem; }
  .sidenav a { flex: 0 0 auto; border-bottom: 0; font-size: .8125rem; }
  .sidenav a[aria-current]::after { display: none; }
  .content { padding: 0 20px var(--space-md); }
  .topline { min-height: 58px; }
  .gallery-head { padding-top: var(--space-lg); }
  .gallery-head h2 { font-size: 2.25rem; }
  .project-visual { height: auto; aspect-ratio: 1 / 1; }
  .section { padding-block: 40px; }
  .small-project-grid { grid-template-columns: minmax(0, 1fr); gap: var(--space-sm); }
  .lab-tile img { height: 170px; }
  .case-page { width: calc(100% - 40px); }
  .case-nav { min-height: 72px; }
  .case-nav nav { gap: var(--space-sm); }
  .contact-layout, .case-contact { grid-template-columns: minmax(0, 1fr); gap: var(--space-lg); }
  .case-contact .contact-actions { justify-content: start; }
  .case-hero { grid-template-columns: minmax(0, 1fr); padding-block: var(--space-lg); }
  .case-hero h1 { font-size: clamp(2.5rem, 9vw, 3.5rem); }
  .case-meta { grid-template-columns: minmax(0,.45fr) minmax(0,1.55fr); gap: var(--space-sm); }
  .case-meta > div:last-child { grid-column: 1 / -1; }
  .case-cover img { height: auto; max-height: 650px; }
  .case-section { padding-block: 40px; }
  .case-overview, .chapter-heading { grid-template-columns: minmax(0,1fr); gap: var(--space-md); }
  .case-index { min-height: 60px; gap: .25rem var(--space-sm); }
  .case-index a { font-size: .75rem; }
  .case-page section[id] { scroll-margin-top: 128px; }
  .case-gallery { grid-template-columns: minmax(0,1fr); gap: var(--space-lg); }
  .pdf-panel { display: block; padding: var(--space-md); }
  .pdf-panel .button { margin-top: var(--space-md); }
}
@media (max-width: 480px) {
  .side { padding-inline: var(--space-sm); }
  .content { padding-inline: var(--space-sm); }
  .lab-tile img { height: 140px; }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .step, .step:nth-child(2), .step:nth-child(3) { padding: var(--space-md) 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .step:last-child { border-bottom: 0; }
  .case-page { width: calc(100% - 32px); }
  .scope-list { grid-template-columns: minmax(0, 1fr); }
  .scope-list li, .scope-list li:nth-child(2), .scope-list li:nth-child(3) { border-right: 0; border-bottom: 1px solid var(--line); padding: var(--space-md) 0; }
  .scope-list li:last-child { border-bottom: 0; }
  .case-nav { gap: var(--space-sm); }
  .case-nav nav { gap: .75rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0s !important; animation-duration: 0s !important; }
}