:root {
  color-scheme: dark;
  --bg: #07101d;
  --bg-deep: #040a12;
  --surface: #0b1625;
  --surface-2: #0f1d2e;
  --surface-3: #13243a;
  --text: #f4f7fb;
  --muted: #98a8bb;
  --muted-strong: #c6d0dc;
  --line: rgba(170, 199, 230, 0.16);
  --line-strong: rgba(170, 199, 230, 0.3);
  --accent: #32b8ff;
  --accent-strong: #008cdb;
  --accent-soft: rgba(50, 184, 255, 0.1);
  --success: #66e2b4;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
  --font-sans: "Manrope", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "DM Mono", "SFMono-Regular", Consolas, monospace;
  --shell: min(1180px, calc(100vw - 48px));
  --header-height: 76px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f7fa;
  --bg-deep: #eaf0f5;
  --surface: #ffffff;
  --surface-2: #edf3f8;
  --surface-3: #e2ebf3;
  --text: #0b1725;
  --muted: #5c6d7f;
  --muted-strong: #34475a;
  --line: rgba(22, 53, 79, 0.15);
  --line-strong: rgba(22, 53, 79, 0.28);
  --accent: #0072b3;
  --accent-strong: #005e95;
  --accent-soft: rgba(0, 122, 191, 0.09);
  --success: #047857;
  --shadow: 0 24px 70px rgba(37, 62, 82, 0.13);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image: linear-gradient(rgba(108, 145, 177, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108, 145, 177, 0.025) 1px, transparent 1px);
  background-size: 32px 32px;
  content: "";
  pointer-events: none;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select {
  color: inherit;
  font: inherit;
}

button,
select {
  cursor: pointer;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.12;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 900px;
  margin-bottom: 28px;
  font-size: clamp(2.9rem, 5.7vw, 5rem);
  font-weight: 600;
}

h1 em,
h2 em {
  color: var(--accent);
  font-style: normal;
}

h2 {
  margin-bottom: 22px;
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 600;
}

h3 {
  font-size: 1.22rem;
  font-weight: 600;
}

::selection {
  background: var(--accent);
  color: #04101b;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 999;
  padding: 10px 14px;
  background: var(--text);
  color: var(--bg);
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.section {
  position: relative;
  padding-block: clamp(88px, 10vw, 144px);
}

.section-bordered {
  border-block: 1px solid var(--line);
}

.section-tint {
  background: linear-gradient(135deg, var(--surface) 0%, var(--bg) 68%);
}

.eyebrow,
.section-kicker,
.cap-code,
.timeline-label,
.education-year,
.project-code,
.detail-label,
.project-controls label > span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  color: var(--accent);
}

.eyebrow > span {
  width: 30px;
  height: 1px;
  background: currentColor;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 11px 18px;
  border: 1px solid transparent;
  font-size: 0.86rem;
  font-weight: 700;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--accent);
  color: #03101a;
}

.button-primary:hover {
  background: #70ceff;
}

[data-theme="light"] .button-primary {
  color: #fff;
}

.button-secondary {
  border-color: var(--line-strong);
  background: transparent;
  color: var(--text);
}

.button-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.button-light {
  background: #f7fbff;
  color: #081525;
}

.button-ghost {
  border-color: rgba(255, 255, 255, 0.38);
  color: #fff;
}

.text-link,
.project-link,
.education-item a,
.detail-repo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-size: 0.86rem;
  font-weight: 700;
}

.text-link:hover,
.project-link:hover,
.education-item a:hover,
.detail-repo:hover {
  text-decoration: underline;
  text-underline-offset: 5px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  border-bottom: 1px solid transparent;
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  border-color: var(--line);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

.header-inner {
  display: grid;
  height: 100%;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 30px;
}

.brand {
  display: inline-flex;
  width: max-content;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 500;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-copy strong {
  font-size: 0.9rem;
  letter-spacing: -0.01em;
}

.brand-copy span {
  margin-top: 3px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.primary-nav a {
  position: relative;
  color: var(--muted-strong);
  font-size: 0.76rem;
  font-weight: 600;
}

.primary-nav a::after {
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 1px;
  background: var(--accent);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  color: var(--text);
}

.primary-nav a:hover::after,
.primary-nav a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.theme-toggle,
.menu-toggle {
  border: 0;
  background: transparent;
}

.theme-toggle {
  padding: 8px 0;
}

.theme-toggle-track {
  position: relative;
  display: block;
  width: 38px;
  height: 20px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--surface-2);
}

.theme-toggle-track span {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  transition: transform 220ms var(--ease);
}

[data-theme="light"] .theme-toggle-track span {
  transform: translateX(18px);
}

.menu-toggle {
  position: relative;
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
}

.menu-toggle > span:not(.sr-only) {
  position: absolute;
  top: 18px;
  left: 11px;
  display: block;
  width: 21px;
  height: 1px;
  margin: 0;
  background: var(--text);
  transition: transform 180ms ease;
}

.menu-toggle > span:not(.sr-only):last-child { top: 25px; }

.hero {
  min-height: min(880px, calc(100svh - var(--header-height)));
  display: grid;
  align-items: center;
  overflow: hidden;
}

.hero::before {
  position: absolute;
  top: -20%;
  right: -15%;
  width: 60vw;
  height: 60vw;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(19, 139, 207, 0.18), transparent 64%);
  content: "";
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(350px, 0.75fr);
  align-items: center;
  gap: clamp(54px, 7vw, 100px);
}

.hero-intro {
  max-width: 700px;
  margin-bottom: 34px;
  color: var(--muted-strong);
  font-size: clamp(1.04rem, 1.8vw, 1.24rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-disciplines {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  padding: 28px 0 0;
  margin: 34px 0 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  list-style: none;
  text-transform: uppercase;
}

.hero-disciplines li::before {
  margin-right: 8px;
  color: var(--accent);
  content: "+";
}

.system-frame {
  position: relative;
  padding: 22px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(150deg, rgba(17, 37, 58, 0.94), rgba(5, 14, 25, 0.94));
  box-shadow: var(--shadow);
}

[data-theme="light"] .system-frame {
  background: linear-gradient(150deg, #fff, #e8f1f8);
}

.system-frame::before,
.system-frame::after {
  position: absolute;
  width: 22px;
  height: 22px;
  border-color: var(--accent);
  border-style: solid;
  content: "";
}

.system-frame::before {
  top: -5px;
  left: -5px;
  border-width: 1px 0 0 1px;
}

.system-frame::after {
  right: -5px;
  bottom: -5px;
  border-width: 0 1px 1px 0;
}

.system-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
}

.status-dot {
  color: var(--success);
}

.status-dot::before {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 12px currentColor;
  content: "";
}

.system-core {
  position: relative;
  display: grid;
  width: min(320px, 75vw);
  aspect-ratio: 1;
  place-items: center;
  margin: 25px auto;
}

.system-core::before,
.system-core::after {
  position: absolute;
  border: 1px solid var(--line);
  border-radius: 50%;
  content: "";
}

.system-core::before { inset: 9%; }
.system-core::after { inset: 28%; }

.core-label {
  position: relative;
  z-index: 2;
  display: flex;
  width: 94px;
  height: 94px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent);
  background: var(--accent-soft);
}

.core-label strong {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 1.45rem;
}

.core-label small {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.14em;
}

.core-orbit {
  position: absolute;
  inset: 8%;
  animation: orbit 20s linear infinite;
}

.orbit-two {
  inset: 27%;
  animation-direction: reverse;
  animation-duration: 13s;
}

.core-orbit span {
  position: absolute;
  display: grid;
  width: 44px;
  height: 26px;
  place-items: center;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--muted-strong);
  font-family: var(--font-mono);
  font-size: 0.56rem;
  animation: orbit 20s linear infinite reverse;
}

.orbit-two span { animation-direction: normal; animation-duration: 13s; }
.core-orbit span:first-child { top: -13px; left: calc(50% - 22px); }
.core-orbit span:last-child { right: calc(50% - 22px); bottom: -13px; }

@keyframes orbit { to { transform: rotate(360deg); } }

.signal-path {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.signal-path i {
  height: 2px;
  background: linear-gradient(90deg, var(--line), var(--accent));
}

.system-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 18px 0 0;
  border-top: 1px solid var(--line);
}

.system-stats div {
  padding: 16px 10px 0;
  border-right: 1px solid var(--line);
}

.system-stats div:last-child { border-right: 0; }
.system-stats dt { color: var(--muted); font-family: var(--font-mono); font-size: 0.54rem; text-transform: uppercase; }
.system-stats dd { margin: 3px 0 0; color: var(--accent); font-family: var(--font-mono); font-size: 0.82rem; }

.split-intro {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 60px;
}

.section-kicker {
  display: flex;
  gap: 12px;
  color: var(--muted);
}

.section-kicker span { color: var(--accent); }
.section-kicker p { margin: 0; }
.section-lead h2 { max-width: 850px; }

.lead-columns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px;
  color: var(--muted-strong);
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 76px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.principle {
  min-height: 240px;
  padding: 34px 30px;
  border-right: 1px solid var(--line);
}

.principle:last-child { border-right: 0; }
.principle > span { color: var(--accent); font-family: var(--font-mono); font-size: 0.62rem; }
.principle h3 { margin: 55px 0 12px; }
.principle p { margin: 0; color: var(--muted); font-size: 0.92rem; }

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 54px;
}

.section-heading h2 { max-width: 780px; margin-bottom: 0; }

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.project-card {
  position: relative;
  display: flex;
  min-width: 0;
  flex-direction: column;
  border: 1px solid var(--line);
  background: var(--surface);
  transition: border-color 200ms ease, transform 200ms var(--ease), box-shadow 200ms ease;
}

.project-card:hover {
  z-index: 2;
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
  transform: translateY(-5px);
}

.project-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--surface-2);
}

.project-media::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 52%, rgba(3, 10, 18, 0.55));
  content: "";
  pointer-events: none;
}

.project-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms var(--ease);
}

.project-card:hover .project-media img { transform: scale(1.035); }

.project-card[data-project="eyroad"] .project-media img { object-position: center 30%; }
.project-card[data-project="nurtly"] .project-media img { object-position: center 18%; }
.project-card[data-project="smart-assistive-cane"] .project-media img { object-fit: contain; background: var(--surface-2); }

.project-media-badge {
  position: absolute;
  z-index: 2;
  top: 14px;
  left: 14px;
  padding: 6px 8px;
  background: rgba(4, 12, 21, 0.84);
  color: #d9e8f5;
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.project-plate {
  position: relative;
  display: grid;
  aspect-ratio: 16 / 7;
  place-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(140deg, var(--surface-3), var(--surface));
}

.project-plate::before,
.project-plate::after {
  position: absolute;
  width: 140px;
  height: 140px;
  border: 1px solid var(--line);
  border-radius: 50%;
  content: "";
}

.project-plate::before { top: -70px; right: -40px; }
.project-plate::after { bottom: -100px; left: -20px; }
.project-plate span { color: var(--accent); font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em; }

.project-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 26px;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 20px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.project-meta .verified { color: var(--success); }
.project-card h3 { min-height: 2.45em; margin-bottom: 14px; }
.project-summary { margin-bottom: 22px; color: var(--muted); font-size: 0.9rem; }
.project-summary.is-pending { font-style: italic; }

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding: 0;
  margin: auto 0 24px;
  list-style: none;
}

.tag-list li {
  padding: 5px 8px;
  border: 1px solid var(--line);
  color: var(--muted-strong);
  font-family: var(--font-mono);
  font-size: 0.56rem;
}

.project-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.project-actions a:last-child:not(:first-child) { color: var(--muted); }

.capability-layout {
  display: grid;
  grid-template-columns: minmax(250px, 0.65fr) minmax(0, 1.35fr);
  gap: clamp(48px, 8vw, 110px);
}

.capability-intro {
  position: sticky;
  top: calc(var(--header-height) + 40px);
  align-self: start;
}

.capability-intro p:last-child { color: var(--muted); }

.capability-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.capability-card {
  min-height: 310px;
  padding: 30px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.cap-code { color: var(--accent); }
.capability-card h3 { margin: 52px 0 20px; }
.capability-card ul { padding: 0; margin: 0; color: var(--muted); list-style: none; }
.capability-card li { padding-block: 5px; border-bottom: 1px dotted var(--line); font-size: 0.86rem; }
.capability-card li::before { margin-right: 8px; color: var(--accent); content: "+"; }

.timeline {
  border-top: 1px solid var(--line-strong);
}

.timeline-item {
  display: grid;
  grid-template-columns: 65px minmax(220px, 0.8fr) 1fr;
  gap: 36px;
  align-items: start;
  padding-block: 38px;
  border-bottom: 1px solid var(--line);
}

.timeline-index { color: var(--accent); font-family: var(--font-mono); font-size: 0.72rem; }
.timeline-label { margin-bottom: 9px; color: var(--muted); }
.timeline-item h3 { margin: 0; }
.timeline-item > p { margin: 0; color: var(--muted); }

.education-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 60px;
}

.education-list { border-top: 1px solid var(--line-strong); }
.education-item { display: grid; grid-template-columns: 160px 1fr; gap: 36px; padding-block: 42px; border-bottom: 1px solid var(--line); }
.education-year { color: var(--accent); }
.education-item p { margin-bottom: 8px; color: var(--muted); }
.education-item h2,
.education-item h3 { margin: 0 0 12px; font-size: clamp(1.45rem, 2.6vw, 2.25rem); }
.education-item a { margin-top: 12px; }

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  list-style: none;
}

.process-grid li { padding: 30px 26px; border-right: 1px solid var(--line); }
.process-grid li:last-child { border-right: 0; }
.process-grid span { color: var(--accent); font-family: var(--font-mono); font-size: 0.65rem; }
.process-grid h3 { margin: 46px 0 12px; }
.process-grid p { margin: 0; color: var(--muted); font-size: 0.86rem; }

.contact-section { padding-top: 0; }
.contact-panel { padding: clamp(42px, 7vw, 80px); background: linear-gradient(120deg, #0069a4, #063e68); color: #fff; }
.contact-panel .eyebrow { color: #ccecff; }
.contact-panel h2 { max-width: 830px; }
.contact-panel > p:not(.eyebrow) { max-width: 650px; color: rgba(255, 255, 255, 0.9); }
.contact-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.contact-links { display: flex; flex-wrap: wrap; gap: 22px; padding-top: 28px; margin-top: 44px; border-top: 1px solid rgba(255, 255, 255, 0.25); font-family: var(--font-mono); font-size: 0.7rem; }
.contact-links a:hover { text-decoration: underline; text-underline-offset: 4px; }

.site-footer { padding-block: 34px; border-top: 1px solid var(--line); background: var(--bg-deep); }
.footer-inner { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 30px; }
.footer-inner > p { margin: 0; color: var(--muted); font-size: 0.7rem; text-align: center; }
.back-top { justify-self: end; color: var(--muted-strong); font-family: var(--font-mono); font-size: 0.66rem; }

.page-hero { padding-block: clamp(90px, 10vw, 136px) clamp(70px, 8vw, 110px); border-bottom: 1px solid var(--line); }
.page-hero-grid { display: grid; grid-template-columns: 1.4fr 0.6fr; gap: clamp(44px, 8vw, 110px); align-items: end; }
.page-hero h1 { margin-bottom: 0; font-size: clamp(2.7rem, 5.5vw, 4.8rem); }
.page-hero-copy { margin: 0 0 8px; color: var(--muted-strong); }

.archive-section { padding-top: 60px; }
.project-controls { display: grid; grid-template-columns: 1.5fr 0.8fr 0.8fr auto; gap: 12px; align-items: end; padding-bottom: 30px; border-bottom: 1px solid var(--line); }
.project-controls label { display: flex; min-width: 0; flex-direction: column; gap: 8px; }
.project-controls label > span { color: var(--muted); }
.project-controls input,
.project-controls select {
  width: 100%;
  min-height: 48px;
  padding: 10px 13px;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: var(--surface);
}
.project-controls input::placeholder { color: var(--muted); }
.project-controls input:focus,
.project-controls select:focus { border-color: var(--accent); outline: 0; box-shadow: 0 0 0 1px var(--accent); }
.clear-filters { min-height: 48px; padding: 10px 15px; border: 1px solid var(--line-strong); background: transparent; color: var(--muted-strong); font-size: 0.78rem; }
.clear-filters:hover { border-color: var(--accent); color: var(--accent); }
.archive-meta { display: flex; justify-content: space-between; gap: 20px; padding-block: 25px; color: var(--muted); font-family: var(--font-mono); font-size: 0.65rem; }
.archive-meta p { margin: 0; }
.archive-grid { grid-template-columns: repeat(3, 1fr); }
.archive-grid .project-body { min-height: 310px; }
.empty-state { padding: 90px 0; text-align: center; }
.empty-state .eyebrow { justify-content: center; }

.detail-hero { padding-bottom: 64px; }
.detail-breadcrumb { display: inline-flex; margin-bottom: 38px; color: var(--muted); font-family: var(--font-mono); font-size: 0.66rem; }
.detail-breadcrumb:hover { color: var(--accent); }
.detail-hero-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr); gap: clamp(44px, 8vw, 100px); align-items: end; }
.detail-hero h1 { max-width: 800px; margin-bottom: 22px; font-size: clamp(2.7rem, 5.2vw, 4.8rem); }
.detail-summary { max-width: 720px; margin: 0; color: var(--muted-strong); font-size: 1.08rem; }
.detail-facts { margin: 0; border-top: 1px solid var(--line-strong); }
.detail-facts div { display: grid; grid-template-columns: 90px 1fr; gap: 20px; padding-block: 15px; border-bottom: 1px solid var(--line); }
.detail-facts dt { color: var(--muted); font-family: var(--font-mono); font-size: 0.62rem; text-transform: uppercase; }
.detail-facts dd { margin: 0; font-size: 0.84rem; }

.detail-media { padding: 0 0 clamp(80px, 9vw, 130px); }
.detail-media-feature { position: relative; overflow: hidden; border: 1px solid var(--line); background: var(--surface); }
.detail-media-feature img {
  width: 100%;
  height: clamp(320px, 55vw, 720px);
  object-fit: contain;
  background: var(--surface-2);
}
.detail-media-feature figcaption,
.detail-gallery figcaption { padding: 12px 15px; border-top: 1px solid var(--line); color: var(--muted); font-family: var(--font-mono); font-size: 0.62rem; }
.detail-gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 16px; }
.detail-gallery figure { margin: 0; border: 1px solid var(--line); background: var(--surface); }
.detail-gallery img { width: 100%; aspect-ratio: 16 / 10; object-fit: contain; background: var(--surface-2); }
.detail-gallery.is-portrait img { aspect-ratio: 3 / 4; object-fit: contain; background: var(--surface-2); }

.architecture-visual { padding: 0 0 clamp(80px, 9vw, 130px); }
.architecture-visual h2 { max-width: 680px; margin-bottom: 38px; }
.architecture-map {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 18px;
  align-items: center;
}
.architecture-group {
  display: grid;
  min-width: 0;
  gap: 8px;
  padding: 22px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
}
.architecture-group p {
  margin: 0 0 8px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.architecture-group span {
  padding-top: 8px;
  border-top: 1px dotted var(--line);
  color: var(--muted-strong);
  font-size: 0.78rem;
}
.architecture-arrow { color: var(--accent); font-family: var(--font-mono); font-size: 1.4rem; }

.case-study { border-top: 1px solid var(--line); }
.case-row { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 60px; padding-block: 56px; border-bottom: 1px solid var(--line); }
.detail-label { color: var(--accent); }
.case-content { max-width: 820px; }
.case-content p { margin-bottom: 0; color: var(--muted-strong); }
.case-content ul { padding: 0; margin: 0; list-style: none; }
.case-content li { position: relative; padding: 12px 0 12px 24px; border-bottom: 1px dotted var(--line); color: var(--muted-strong); }
.case-content li::before { position: absolute; top: 12px; left: 0; color: var(--accent); content: "+"; }
.case-content .tag-list { margin-top: 22px; }

.archive-project-note { padding-block: clamp(80px, 10vw, 140px); text-align: center; }
.archive-project-note h2 { max-width: 700px; margin-inline: auto; }
.archive-project-note p { max-width: 680px; margin: 0 auto 30px; color: var(--muted); }
.not-found { min-height: 60vh; display: grid; place-items: center; text-align: center; }
.not-found p { color: var(--muted); }

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 650ms var(--ease), transform 650ms var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 1050px) {
  .header-inner { gap: 18px; }
  .primary-nav { gap: 16px; }
  .primary-nav a { font-size: 0.69rem; }
  .hero-grid { grid-template-columns: 1fr 360px; gap: 48px; }
  .project-grid,
  .archive-grid { grid-template-columns: repeat(2, 1fr); }
  .project-controls { grid-template-columns: repeat(3, 1fr); }
  .search-field { grid-column: span 2; }
  .clear-filters { grid-column: 3; grid-row: 2; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid li:nth-child(2) { border-right: 0; }
  .process-grid li:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
}

@media (max-width: 860px) {
  :root { --header-height: 70px; --shell: min(100% - 36px, 720px); }
  .header-inner { grid-template-columns: 1fr auto auto; }
  .menu-toggle { display: block; grid-column: 2; }
  .theme-toggle { grid-column: 3; }
  .primary-nav {
    position: absolute;
    top: var(--header-height);
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 18px;
    border-bottom: 1px solid var(--line);
    background: var(--bg);
    box-shadow: var(--shadow);
  }
  .primary-nav.is-open { display: flex; }
  .primary-nav a { padding: 12px 6px; border-bottom: 1px solid var(--line); font-size: 0.78rem; }
  .primary-nav a:last-child { border-bottom: 0; }
  .primary-nav a::after { display: none; }
  .menu-toggle[aria-expanded="true"] > span:not(.sr-only) { top: 21px; transform: rotate(45deg); }
  .menu-toggle[aria-expanded="true"] > span:not(.sr-only):last-child { transform: rotate(-45deg); }
  .hero { min-height: auto; padding-top: 100px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-system { max-width: 520px; }
  .split-intro,
  .education-layout { grid-template-columns: 1fr; gap: 30px; }
  .section-kicker { border-bottom: 1px solid var(--line); }
  .principle-grid { grid-template-columns: 1fr; }
  .principle { min-height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .principle:last-child { border-bottom: 0; }
  .principle h3 { margin-top: 30px; }
  .capability-layout { grid-template-columns: 1fr; }
  .capability-intro { position: static; }
  .timeline-item { grid-template-columns: 45px 1fr; gap: 26px; }
  .timeline-item > p { grid-column: 2; }
  .education-item { grid-template-columns: 130px 1fr; }
  .page-hero-grid,
  .detail-hero-grid { grid-template-columns: 1fr; }
  .architecture-map { grid-template-columns: 1fr; }
  .architecture-arrow { justify-self: center; transform: rotate(90deg); }
  .page-hero-copy { max-width: 640px; }
  .case-row { grid-template-columns: 150px 1fr; gap: 36px; }
}

@media (max-width: 620px) {
  :root { --shell: min(100% - 28px, 540px); }
  body { font-size: 15px; }
  h1 { font-size: clamp(2.5rem, 12vw, 3.8rem); }
  h2 { font-size: clamp(1.9rem, 9vw, 2.75rem); }
  .section { padding-block: 76px; }
  .brand-copy span { display: none; }
  .hero { padding-top: 80px; }
  .hero-actions .button { width: 100%; }
  .hero-disciplines { display: grid; grid-template-columns: repeat(2, 1fr); }
  .hero-system { width: 100%; }
  .system-frame { padding: 16px; }
  .system-core { width: min(280px, 74vw); }
  .lead-columns,
  .project-grid,
  .archive-grid,
  .capability-grid,
  .process-grid,
  .detail-gallery { grid-template-columns: 1fr; }
  .capability-grid { border-left: 0; }
  .capability-card { min-height: auto; border-left: 1px solid var(--line); }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .project-card h3 { min-height: auto; }
  .timeline-item { grid-template-columns: 34px 1fr; gap: 16px; }
  .education-item { grid-template-columns: 1fr; gap: 14px; }
  .process-grid li { border-right: 0; border-bottom: 1px solid var(--line); }
  .process-grid li:last-child { border-bottom: 0; }
  .process-grid h3 { margin-top: 26px; }
  .contact-panel { width: 100%; }
  .contact-actions .button { width: 100%; }
  .contact-links { flex-direction: column; gap: 10px; overflow-wrap: anywhere; }
  .footer-inner { grid-template-columns: 1fr auto; }
  .footer-inner > p { display: none; }
  .project-controls { grid-template-columns: 1fr; }
  .search-field,
  .clear-filters { grid-column: auto; grid-row: auto; }
  .archive-meta { flex-direction: column; }
  .archive-meta p:last-child { display: none; }
  .case-row { grid-template-columns: 1fr; gap: 18px; padding-block: 40px; }
  .detail-facts div { grid-template-columns: 75px 1fr; }
}

@media (max-width: 390px) {
  :root { --shell: calc(100% - 24px); }
  .brand-mark { width: 32px; height: 32px; }
  .brand-copy strong { font-size: 0.8rem; }
  .header-inner { gap: 8px; }
  .menu-toggle { width: 44px; }
  .system-head span:first-child { max-width: 150px; }
  .hero-disciplines { grid-template-columns: 1fr; }
  .project-body { padding: 22px; }
  .contact-panel { padding: 36px 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}