:root {
  color-scheme: dark;
  --bg: #030815;
  --bg-soft: #071124;
  --surface: rgba(11, 23, 46, 0.78);
  --surface-solid: #0b172e;
  --surface-light: #10203c;
  --line: rgba(115, 167, 255, 0.2);
  --line-strong: rgba(32, 213, 230, 0.42);
  --text: #f4f8ff;
  --muted: #aebdd2;
  --blue: #1478ff;
  --blue-light: #68a7ff;
  --cyan: #16e0e8;
  --cyan-soft: #83f7f5;
  --success: #56e39f;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: min(1180px, calc(100% - 40px));
  --header-height: 80px;
}

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

html {
  scroll-behavior: smooth;
  scrollbar-color: var(--blue) var(--bg);
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: clip;
  background:
    radial-gradient(circle at 7% 4%, rgba(20, 120, 255, 0.16), transparent 26rem),
    radial-gradient(circle at 92% 18%, rgba(22, 224, 232, 0.09), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

body.menu-open,
body.modal-open {
  overflow: hidden;
}

img,
svg {
  display: block;
  height: auto;
  max-width: 100%;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button,
input {
  font: inherit;
}

:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 9999;
  transform: translateY(-150%);
  border-radius: 10px;
  background: var(--text);
  color: var(--bg);
  padding: 11px 16px;
  font-weight: 800;
  transition: transform 160ms ease;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding-top: env(safe-area-inset-top);
  border-bottom: 1px solid rgba(115, 167, 255, 0.14);
  background: rgba(3, 8, 21, 0.82);
  backdrop-filter: blur(18px);
}

.nav-shell {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  font-weight: 850;
  letter-spacing: -0.02em;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 13px;
  box-shadow: 0 0 24px rgba(22, 224, 232, 0.2);
}

.brand span {
  font-size: 1.05rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  border-radius: 12px;
  padding: 8px 13px;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 700;
  transition: color 160ms ease, background 160ms ease;
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  background: rgba(20, 120, 255, 0.1);
  color: var(--text);
}

.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}

.menu-icon,
.menu-icon::before,
.menu-icon::after {
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.menu-icon {
  position: relative;
}

.menu-icon::before,
.menu-icon::after {
  position: absolute;
  left: 0;
  content: "";
}

.menu-icon::before { transform: translateY(-7px); }
.menu-icon::after { transform: translateY(7px); }
.menu-toggle[aria-expanded="true"] .menu-icon { background: transparent; }
.menu-toggle[aria-expanded="true"] .menu-icon::before { transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-icon::after { transform: rotate(-45deg); }

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 1px solid transparent;
  border-radius: 14px;
  padding: 11px 18px;
  background: linear-gradient(135deg, var(--blue), #0b5ddb);
  color: #fff;
  font-weight: 800;
  line-height: 1.2;
  cursor: pointer;
  box-shadow: 0 12px 28px rgba(20, 120, 255, 0.2);
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 34px rgba(20, 120, 255, 0.28);
}

.button-secondary {
  border-color: var(--line-strong);
  background: rgba(11, 23, 46, 0.68);
  color: var(--cyan-soft);
  box-shadow: none;
}

.button-ghost {
  border-color: var(--line);
  background: transparent;
  color: var(--text);
  box-shadow: none;
}

.button-small {
  min-height: 44px;
  border-radius: 12px;
  padding: 9px 14px;
  font-size: 0.9rem;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  color: var(--cyan-soft);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 26px;
  height: 1px;
  background: var(--cyan);
  content: "";
}

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

h1,
h2,
h3 {
  line-height: 1.1;
  text-wrap: balance;
}

h1 {
  margin-bottom: 22px;
  font-size: clamp(2.55rem, 7vw, 5.9rem);
  letter-spacing: -0.065em;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(2rem, 4vw, 3.6rem);
  letter-spacing: -0.045em;
}

h3 {
  margin-bottom: 12px;
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  letter-spacing: -0.025em;
}

.gradient-text {
  background: linear-gradient(110deg, #fff 8%, #8bbcff 48%, var(--cyan) 88%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(1.02rem, 2vw, 1.22rem);
}

.section {
  position: relative;
  padding-block: clamp(72px, 10vw, 118px);
}

.section-tight {
  padding-block: clamp(52px, 7vw, 82px);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 38px;
}

.section-head > div {
  max-width: 770px;
}

.section-head p {
  margin-bottom: 0;
  color: var(--muted);
}

.hero {
  min-height: calc(100svh - var(--header-height));
  display: grid;
  align-items: center;
  padding-block: clamp(64px, 9vw, 110px);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(340px, 0.88fr);
  align-items: center;
  gap: clamp(44px, 8vw, 100px);
}

.hero-copy p:not(.eyebrow) {
  max-width: 720px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(1.04rem, 2vw, 1.24rem);
}

.tech-visual {
  position: relative;
  overflow: hidden;
  min-height: 500px;
  display: grid;
  place-items: center;
  isolation: isolate;
}

.tech-visual::before,
.tech-visual::after {
  position: absolute;
  z-index: -2;
  border-radius: 50%;
  content: "";
}

.tech-visual::before {
  inset: 8% 4%;
  border: 1px solid rgba(22, 224, 232, 0.2);
  box-shadow: inset 0 0 80px rgba(20, 120, 255, 0.11), 0 0 80px rgba(20, 120, 255, 0.1);
  animation: visual-pulse 5s ease-in-out infinite;
}

.tech-visual::after {
  inset: 20%;
  background: radial-gradient(circle, rgba(22, 224, 232, 0.22), rgba(20, 120, 255, 0.04) 50%, transparent 72%);
  filter: blur(14px);
}

.hero-logo {
  width: min(72%, 330px);
  aspect-ratio: 1;
  border-radius: 30%;
  box-shadow: 0 0 58px rgba(20, 120, 255, 0.22);
}

.orbit,
.circuit {
  position: absolute;
  pointer-events: none;
}

.orbit {
  inset: 15%;
  border: 1px dashed rgba(104, 167, 255, 0.32);
  border-radius: 50%;
  animation: orbit-spin 28s linear infinite;
}

.orbit::before,
.orbit::after,
.node {
  position: absolute;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 16px var(--cyan);
  content: "";
}

.orbit::before { top: 4%; left: 24%; }
.orbit::after { right: 8%; bottom: 22%; }
.node-one { top: 12%; right: 19%; }
.node-two { bottom: 15%; left: 16%; }
.node-three { top: 56%; left: 3%; width: 6px; height: 6px; }

.circuit {
  width: 115px;
  height: 64px;
  border-top: 1px solid var(--blue-light);
  border-right: 1px solid var(--blue-light);
  opacity: 0.5;
}

.circuit-one { top: 10%; left: 1%; }
.circuit-two { right: 0; bottom: 10%; transform: rotate(180deg); }

.grid-4,
.grid-3,
.project-grid,
.skills-grid,
.contact-grid {
  display: grid;
  gap: 20px;
}

.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.project-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }

.card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, rgba(16, 32, 60, 0.88), rgba(7, 17, 36, 0.78));
  box-shadow: var(--shadow);
}

.card::before {
  position: absolute;
  inset: 0 auto auto 0;
  width: 45%;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  content: "";
}

.service-card {
  min-height: 260px;
  padding: 28px;
}

.service-number {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  margin-bottom: 46px;
  border: 1px solid rgba(22, 224, 232, 0.32);
  border-radius: 16px;
  background: rgba(22, 224, 232, 0.06);
  color: var(--cyan-soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 800;
}

.service-card p,
.principle-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.project-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
}

.project-card-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #061025;
}

.project-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 400ms ease;
}

.project-card-media.media-contain img {
  object-fit: contain;
}

.project-card:hover .project-card-media img {
  transform: scale(1.025);
}

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

.project-card-body p {
  color: var(--muted);
}

.project-card-body .button {
  margin-top: auto;
}

.category {
  display: inline-flex;
  margin-bottom: 14px;
  border: 1px solid rgba(22, 224, 232, 0.24);
  border-radius: 999px;
  padding: 5px 10px;
  background: rgba(22, 224, 232, 0.06);
  color: var(--cyan-soft);
  font-size: 0.75rem;
  font-weight: 850;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 5px 0 24px;
  padding: 0;
  list-style: none;
}

.tags li {
  border-radius: 999px;
  background: rgba(104, 167, 255, 0.1);
  color: #c7ddff;
  padding: 5px 9px;
  font-size: 0.76rem;
  font-weight: 700;
}

.principle-card {
  padding: 30px;
}

.principle-card strong {
  display: block;
  margin-bottom: 14px;
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.82rem;
}

.cta-panel {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 32px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: clamp(34px, 6vw, 64px);
  background:
    linear-gradient(115deg, rgba(20, 120, 255, 0.17), rgba(22, 224, 232, 0.04)),
    var(--surface-solid);
  box-shadow: var(--shadow);
}

.cta-panel::after {
  position: absolute;
  top: -80px;
  right: -80px;
  width: 230px;
  height: 230px;
  border: 1px solid rgba(22, 224, 232, 0.25);
  border-radius: 50%;
  content: "";
}

.cta-panel h2 {
  max-width: 720px;
  margin-bottom: 0;
}

.page-hero {
  padding-block: clamp(72px, 10vw, 125px) clamp(55px, 8vw, 88px);
}

.page-hero h1 {
  max-width: 960px;
  font-size: clamp(2.7rem, 7vw, 5.5rem);
}

.page-hero .lead {
  margin-bottom: 0;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin: 0 0 28px;
  padding: 0;
  color: var(--muted);
  font-size: 0.9rem;
  list-style: none;
}

.breadcrumbs li:not(:last-child)::after {
  margin-left: 9px;
  color: var(--blue-light);
  content: "/";
}

.breadcrumbs a:hover {
  color: var(--cyan-soft);
}

.project-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(420px, 1.18fr);
  align-items: center;
  gap: clamp(38px, 7vw, 86px);
}

.project-hero-grid h1 {
  font-size: clamp(2.7rem, 6vw, 5.3rem);
}

.project-subtitle {
  margin-bottom: 18px;
  color: var(--blue-light);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 800;
}

.project-cover {
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--surface-solid);
  box-shadow: var(--shadow), 0 0 70px rgba(20, 120, 255, 0.09);
}

.project-cover img {
  width: 100%;
  max-height: 590px;
  object-fit: cover;
}

.project-cover.mobile-cover {
  width: min(100%, 440px);
  justify-self: center;
}

.project-cover.mobile-cover img {
  aspect-ratio: 0.56;
  max-height: 660px;
  object-fit: cover;
  object-position: top;
}

.study-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  gap: 26px;
}

.study-card {
  padding: clamp(28px, 4vw, 42px);
}

.study-card p:last-child,
.study-card ul:last-child {
  margin-bottom: 0;
}

.check-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  color: var(--muted);
}

.check-list li::before {
  position: absolute;
  top: 0.55em;
  left: 2px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  content: "";
}

.privacy-note {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  margin-top: 26px;
  border: 1px solid rgba(86, 227, 159, 0.26);
  border-radius: 14px;
  padding: 16px 18px;
  background: rgba(86, 227, 159, 0.06);
  color: #c6ead7;
  font-size: 0.9rem;
}

.privacy-note::before {
  flex: 0 0 auto;
  color: var(--success);
  content: "●";
}

.gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.gallery-item {
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.gallery-button {
  position: relative;
  width: 100%;
  display: block;
  overflow: hidden;
  border: 0;
  padding: 0;
  background: #061025;
  color: inherit;
  cursor: zoom-in;
}

.gallery-button::after {
  position: absolute;
  right: 14px;
  bottom: 14px;
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  background: rgba(3, 8, 21, 0.78);
  color: #fff;
  content: "+";
  font-size: 1.45rem;
  font-weight: 300;
}

.gallery-button img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 260ms ease;
}

.gallery-button:hover img {
  transform: scale(1.02);
}

.gallery-item figcaption {
  padding: 15px 18px 17px;
  color: var(--muted);
  font-size: 0.9rem;
}

.gallery.gallery-mobile .gallery-button img {
  aspect-ratio: 0.7;
  max-height: 650px;
  object-position: top;
}

.lightbox[hidden] {
  display: none;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) 64px;
  align-items: center;
  gap: 18px;
  padding: max(24px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) max(24px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
  background: rgba(1, 4, 12, 0.95);
  backdrop-filter: blur(16px);
}

.lightbox-figure {
  min-width: 0;
  margin: 0;
  text-align: center;
}

.lightbox-image {
  width: auto;
  max-width: 100%;
  max-height: calc(100vh - 135px);
  margin-inline: auto;
  border-radius: 12px;
  object-fit: contain;
  box-shadow: 0 22px 70px #000;
}

.lightbox-caption {
  margin: 14px 54px 0;
  color: #dbe8fb;
}

.lightbox-close,
.lightbox-nav {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  background: rgba(12, 27, 53, 0.86);
  color: #fff;
  cursor: pointer;
}

.lightbox-close {
  position: absolute;
  top: max(18px, env(safe-area-inset-top));
  right: max(18px, env(safe-area-inset-right));
  font-size: 1.6rem;
}

.lightbox-nav {
  font-size: 1.8rem;
}

.lightbox-nav[hidden] {
  display: none;
}

.about-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.55fr);
  align-items: start;
  gap: 34px;
}

.about-mark {
  position: relative;
  min-height: 330px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: radial-gradient(circle, rgba(20, 120, 255, 0.2), transparent 65%), var(--surface);
}

.about-mark img {
  width: min(64%, 240px);
  border-radius: 26%;
}

.timeline {
  display: grid;
  gap: 18px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

.timeline-year {
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 850;
}

.skills-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.skill-card {
  padding: 26px;
}

.skill-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.contact-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.contact-card {
  display: flex;
  min-height: 235px;
  flex-direction: column;
  align-items: flex-start;
  padding: 30px;
}

.contact-card p {
  color: var(--muted);
}

.contact-card .button,
.contact-card .copy-wrap {
  margin-top: auto;
}

.contact-kicker {
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.email-address {
  overflow-wrap: anywhere;
  color: #d9e7fb;
}

.copy-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.copy-status {
  min-height: 1.5em;
  color: var(--success);
  font-size: 0.88rem;
}

.not-found {
  min-height: calc(100svh - var(--header-height));
  display: grid;
  place-items: center;
  padding-block: 72px;
  text-align: center;
}

.not-found-code {
  margin-bottom: 8px;
  background: linear-gradient(120deg, var(--blue), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: clamp(6rem, 22vw, 13rem);
  font-weight: 900;
  letter-spacing: -0.09em;
  line-height: 0.85;
}

.not-found p {
  max-width: 600px;
  margin-inline: auto;
  color: var(--muted);
}

.site-footer {
  padding: 36px 0 calc(36px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  background: rgba(2, 6, 16, 0.75);
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-copy {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: #d9e7fb;
  font-size: 0.9rem;
  font-weight: 700;
}

.footer-links a:hover {
  color: var(--cyan-soft);
}

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

@keyframes visual-pulse {
  50% { transform: scale(1.025); opacity: 0.72; }
}

@media (max-width: 1024px) {
  :root { --container: min(100% - 32px, 940px); }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(300px, 0.72fr); gap: 38px; }
  .tech-visual { min-height: 410px; }
  .project-hero-grid { grid-template-columns: 1fr; }
  .project-cover { max-width: 880px; }
}

@media (max-width: 820px) {
  :root { --header-height: 72px; }
  .menu-toggle { display: inline-flex; }
  .site-nav {
    position: fixed;
    top: calc(var(--header-height) + env(safe-area-inset-top));
    right: 16px;
    left: 16px;
    max-height: calc(100svh - var(--header-height) - 32px);
    overflow-y: auto;
    display: grid;
    gap: 6px;
    border: 1px solid var(--line-strong);
    border-radius: 18px;
    padding: 12px;
    background: rgba(5, 13, 29, 0.98);
    box-shadow: 0 24px 80px #000;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-12px);
    transition: visibility 180ms ease, opacity 180ms ease, transform 180ms ease;
  }
  .site-nav.is-open { visibility: visible; opacity: 1; transform: translateY(0); }
  .nav-link { width: 100%; padding-inline: 15px; }
  .site-nav .button { width: 100%; margin-top: 4px; }
  .hero { min-height: auto; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-copy { max-width: 720px; }
  .tech-visual { order: -1; min-height: 360px; width: min(100%, 480px); margin-inline: auto; }
  .hero-logo { width: min(62%, 260px); }
  .project-grid,
  .study-grid,
  .about-intro { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .section-head { align-items: start; flex-direction: column; }
  .cta-panel { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  :root { --container: calc(100% - 28px); }
  body { line-height: 1.58; }
  .section { padding-block: 68px; }
  .section-tight { padding-block: 50px; }
  .brand span { font-size: 1rem; }
  .brand img { width: 40px; height: 40px; border-radius: 12px; }
  .grid-4,
  .project-grid,
  .skills-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 0; }
  .service-number { margin-bottom: 32px; }
  .project-card-body { padding: 22px; }
  .button-row { flex-direction: column; }
  .button-row .button { width: 100%; }
  .page-hero { padding-block: 64px 48px; }
  .project-cover.mobile-cover { width: min(100%, 390px); }
  .timeline-item { grid-template-columns: 72px minmax(0, 1fr); gap: 14px; }
  .footer-grid { align-items: flex-start; flex-direction: column; }
  .lightbox { grid-template-columns: 48px minmax(0, 1fr) 48px; gap: 6px; padding-inline: 8px; }
  .lightbox-nav { width: 44px; height: 44px; }
  .lightbox-close { width: 46px; height: 46px; }
  .lightbox-caption { margin-inline: 4px; font-size: 0.9rem; }
}

@media (max-width: 410px) {
  :root { --container: calc(100% - 24px); }
  .tech-visual { min-height: 310px; }
  .project-card-body,
  .service-card,
  .skill-card,
  .contact-card,
  .principle-card { padding: 20px; }
  .study-card { padding: 23px 20px; }
  .cta-panel { padding: 28px 20px; }
}

@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;
  }
}