:root {
  --gt-bg: #08111f;
  --gt-bg-deep: #050b14;
  --gt-surface: #101c2c;
  --gt-surface-2: #142238;
  --gt-border: #243247;
  --gt-text: #f6f8fc;
  --gt-muted: #a8b5c7;
  --gt-blue: #4ea1ff;
  --gt-blue-strong: #247ee8;
  --gt-lime: #b8ff5a;
  --gt-green: #52d98b;
  --gt-amber: #ffbf55;
  --gt-container: 1200px;
  --gt-radius-lg: 24px;
  --gt-radius-md: 18px;
  --gt-shadow: 0 28px 70px rgba(0, 0, 0, 0.32);
}

html {
  scroll-behavior: smooth;
}

body.gtansu-lab-page {
  margin: 0;
  overflow-x: hidden;
  background: var(--gt-bg);
  color: var(--gt-text);
  font-family: Inter, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic",
    Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

body.gtansu-menu-open {
  overflow: hidden;
}

.gtansu-lab-page *,
.gtansu-lab-page *::before,
.gtansu-lab-page *::after {
  box-sizing: border-box;
}

.gtansu-lab-page img {
  display: block;
  max-width: 100%;
  height: auto;
}

.gtansu-lab-page a {
  color: inherit;
  text-decoration: none;
}

.gtansu-lab-page button,
.gtansu-lab-page a {
  -webkit-tap-highlight-color: transparent;
}

.gtansu-lab-page a:focus-visible,
.gtansu-lab-page button:focus-visible,
.gtansu-lab-page input:focus-visible,
.gtansu-lab-page textarea:focus-visible {
  outline: 3px solid var(--gt-lime);
  outline-offset: 4px;
}

.gtansu-container {
  width: min(calc(100% - 40px), var(--gt-container));
  margin-inline: auto;
}

.gtansu-skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 99999;
  padding: 10px 16px;
  border-radius: 8px;
  background: var(--gt-lime);
  color: var(--gt-bg-deep);
  font-weight: 700;
  transform: translateY(-160%);
}

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

.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.gtansu-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  height: 84px;
  border-bottom: 1px solid transparent;
  transition:
    background 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease;
}

.gtansu-header.is-scrolled {
  border-color: rgba(255, 255, 255, 0.08);
  background: rgba(8, 17, 31, 0.9);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(18px);
}

.admin-bar .gtansu-header {
  top: 32px;
}

.gtansu-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.gtansu-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
}

.gtansu-brand__mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(78, 161, 255, 0.55);
  border-radius: 12px;
  background: linear-gradient(145deg, rgba(78, 161, 255, 0.2), rgba(78, 161, 255, 0.03));
  color: var(--gt-blue);
  font: 700 14px/1 monospace;
}

.gtansu-brand strong,
.gtansu-brand small {
  display: block;
}

.gtansu-brand strong {
  letter-spacing: 0.08em;
  line-height: 1.2;
}

.gtansu-brand small {
  margin-top: 3px;
  color: var(--gt-muted);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.16em;
}

.gtansu-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.gtansu-nav > a {
  position: relative;
  min-height: 44px;
  padding: 11px 0;
  color: #cbd5e1;
  font-size: 14px;
  font-weight: 600;
  transition: color 180ms ease;
}

.gtansu-nav > a:not(.gtansu-nav__cta)::after {
  position: absolute;
  right: 0;
  bottom: 5px;
  left: 0;
  height: 1px;
  background: var(--gt-blue);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 200ms ease;
}

.gtansu-nav > a:hover {
  color: #fff;
}

.gtansu-nav > a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.gtansu-nav .gtansu-nav__cta {
  min-width: 126px;
  padding: 10px 18px;
  border: 1px solid rgba(184, 255, 90, 0.45);
  border-radius: 999px;
  color: var(--gt-lime);
  text-align: center;
  transition:
    background 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.gtansu-nav .gtansu-nav__cta:hover {
  background: var(--gt-lime);
  color: var(--gt-bg-deep);
  transform: translateY(-2px);
}

.gtansu-menu-button {
  display: none;
}

.gtansu-hero {
  position: relative;
  min-height: 820px;
  overflow: hidden;
  padding: 170px 0 110px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    radial-gradient(circle at 80% 28%, rgba(78, 161, 255, 0.08), transparent 28%);
  background-size: 64px 64px, 64px 64px, auto;
}

.gtansu-hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(78, 161, 255, 0.45), transparent);
  content: "";
}

.gtansu-hero__grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(480px, 1.08fr);
  gap: 76px;
  align-items: center;
}

.gtansu-hero__glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(8px);
}

.gtansu-hero__glow--one {
  top: 20%;
  left: -180px;
  width: 420px;
  height: 420px;
  background: rgba(78, 161, 255, 0.07);
}

.gtansu-hero__glow--two {
  right: 8%;
  bottom: -200px;
  width: 500px;
  height: 500px;
  background: rgba(184, 255, 90, 0.04);
}

.gtansu-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 22px;
  color: var(--gt-blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.gtansu-eyebrow span {
  width: 24px;
  height: 1px;
  background: currentColor;
}

.gtansu-hero h1 {
  max-width: 700px;
  margin: 0;
  font-size: clamp(48px, 5.1vw, 76px);
  font-weight: 750;
  letter-spacing: -0.055em;
  line-height: 1.13;
}

.gtansu-hero h1 em {
  color: var(--gt-lime);
  font-style: normal;
}

.gtansu-hero__lead {
  max-width: 620px;
  margin: 30px 0 0;
  color: var(--gt-muted);
  font-size: 17px;
  line-height: 1.9;
}

.gtansu-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.gtansu-button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease,
    border-color 180ms ease;
}

.gtansu-button svg,
.gtansu-text-link svg,
.gtansu-note > svg {
  width: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.gtansu-button--primary {
  background: var(--gt-lime);
  box-shadow: 0 12px 30px rgba(184, 255, 90, 0.16);
  color: #071019;
}

.gtansu-button--primary:hover {
  box-shadow: 0 16px 38px rgba(184, 255, 90, 0.24);
  transform: translateY(-2px);
}

.gtansu-button--ghost {
  border-color: var(--gt-border);
  background: rgba(255, 255, 255, 0.025);
  color: var(--gt-text);
}

.gtansu-button--ghost:hover {
  border-color: var(--gt-blue);
  background: rgba(78, 161, 255, 0.08);
  transform: translateY(-2px);
}

.gtansu-tech-list,
.gtansu-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 30px 0 0;
  list-style: none;
}

.gtansu-tech-list li,
.gtansu-tags li {
  padding: 5px 10px;
  border: 1px solid var(--gt-border);
  border-radius: 999px;
  color: #aebbd0;
  font: 600 11px/1.4 monospace;
  letter-spacing: 0.02em;
}

.gtansu-hero__visual {
  position: relative;
  padding: 24px 18px 52px 24px;
}

.gtansu-hero-card {
  overflow: hidden;
  border: 1px solid rgba(78, 161, 255, 0.28);
  border-radius: 22px;
  background: #0d1725;
  box-shadow: var(--gt-shadow);
  transform: rotate(1.5deg);
}

.gtansu-hero-card__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 42px;
  padding: 0 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.gtansu-hero-card__bar > span {
  display: flex;
  gap: 6px;
}

.gtansu-hero-card__bar i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #334155;
}

.gtansu-hero-card__bar i:first-child {
  background: var(--gt-blue);
}

.gtansu-hero-card__bar code {
  color: #77869a;
  font-size: 10px;
}

.gtansu-hero-card__image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.gtansu-hero-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  color: #8594a9;
  font: 600 11px/1 monospace;
  letter-spacing: 0.08em;
}

.gtansu-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--gt-lime);
}

.gtansu-status i,
.gtansu-contact__signal i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 5px rgba(184, 255, 90, 0.08);
}

.gtansu-code-note {
  position: absolute;
  right: -8px;
  bottom: 12px;
  padding: 15px 18px;
  border: 1px solid var(--gt-border);
  border-radius: 12px;
  background: rgba(9, 18, 31, 0.96);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.3);
  color: #8da0b9;
  font-size: 11px;
  transform: rotate(-2deg);
}

.gtansu-code-note span {
  color: var(--gt-blue);
}

.gtansu-code-note b {
  color: var(--gt-lime);
}

.gtansu-section {
  position: relative;
  padding: 120px 0;
}

.gtansu-section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.6fr);
  gap: 70px;
  align-items: end;
  margin-bottom: 52px;
}

.gtansu-section-heading h2,
.gtansu-process h2,
.gtansu-ai-notes h2,
.gtansu-about h2,
.gtansu-contact h2 {
  margin: 0;
  font-size: clamp(36px, 4vw, 58px);
  letter-spacing: -0.045em;
  line-height: 1.2;
}

.gtansu-section-heading > p,
.gtansu-process__intro > p:last-child,
.gtansu-ai-notes__intro > p,
.gtansu-about__copy > p,
.gtansu-contact__copy > p {
  margin: 0;
  color: var(--gt-muted);
  line-height: 1.9;
}

.gtansu-apps {
  background: #0a1422;
}

.gtansu-project-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.gtansu-project {
  grid-column: span 4;
  overflow: hidden;
  border: 1px solid var(--gt-border);
  border-radius: var(--gt-radius-lg);
  background: var(--gt-surface);
  transition:
    border-color 220ms ease,
    transform 220ms ease,
    box-shadow 220ms ease;
}

.gtansu-project:hover {
  border-color: rgba(78, 161, 255, 0.62);
  box-shadow: 0 24px 54px rgba(0, 0, 0, 0.22);
  transform: translateY(-5px);
}

.gtansu-project--green:hover {
  border-color: rgba(82, 217, 139, 0.68);
}

.gtansu-project--amber:hover {
  border-color: rgba(255, 191, 85, 0.68);
}

.gtansu-project__media {
  position: relative;
  display: block;
  overflow: hidden;
  background: #0b1320;
}

.gtansu-project__media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.gtansu-project:hover .gtansu-project__media img {
  transform: scale(1.035);
}

.gtansu-project__number {
  position: absolute;
  top: 14px;
  left: 14px;
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 10px;
  background: rgba(5, 11, 20, 0.78);
  backdrop-filter: blur(8px);
  color: white;
  font: 700 11px/1 monospace;
}

.gtansu-project__body {
  padding: 24px;
}

.gtansu-project__body .gtansu-tags {
  margin-top: 0;
}

.gtansu-project__body h3 {
  margin: 18px 0 8px;
  font-size: 25px;
  letter-spacing: -0.025em;
  line-height: 1.35;
}

.gtansu-project__body h3 a:hover {
  color: var(--gt-blue);
}

.gtansu-project__body > p {
  min-height: 82px;
  margin: 0;
  color: var(--gt-muted);
  font-size: 14px;
  line-height: 1.8;
}

.gtansu-text-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  color: var(--gt-blue);
  font-size: 13px;
  font-weight: 700;
}

.gtansu-text-link svg {
  transition: transform 180ms ease;
}

.gtansu-text-link:hover svg {
  transform: translateX(4px);
}

.gtansu-process {
  overflow: hidden;
  background:
    radial-gradient(circle at 15% 15%, rgba(78, 161, 255, 0.08), transparent 25%),
    var(--gt-bg);
}

.gtansu-process .gtansu-container {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 90px;
}

.gtansu-process__intro {
  position: sticky;
  top: 130px;
  align-self: start;
}

.gtansu-process__intro > p:last-child {
  margin-top: 24px;
}

.gtansu-process__steps {
  padding: 0;
  margin: 0;
  list-style: none;
}

.gtansu-process__steps li {
  position: relative;
  min-height: 160px;
  padding: 6px 0 42px 92px;
  border-bottom: 1px solid var(--gt-border);
  margin-bottom: 32px;
}

.gtansu-process__steps li::before {
  position: absolute;
  top: 20px;
  bottom: -33px;
  left: 31px;
  width: 1px;
  background: linear-gradient(var(--gt-blue), transparent);
  content: "";
}

.gtansu-process__steps li:last-child::before {
  display: none;
}

.gtansu-process__steps li > span {
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  width: 62px;
  height: 62px;
  place-items: center;
  border: 1px solid rgba(78, 161, 255, 0.38);
  border-radius: 17px;
  background: rgba(78, 161, 255, 0.08);
  color: var(--gt-blue);
  font: 700 14px/1 monospace;
}

.gtansu-process__steps h3 {
  margin: 0 0 8px;
  font-size: 23px;
}

.gtansu-process__steps p {
  margin: 0;
  color: var(--gt-muted);
}

.gtansu-dev-log {
  background: #0a1422;
}

.gtansu-post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.gtansu-post-card {
  overflow: hidden;
  border: 1px solid var(--gt-border);
  border-radius: var(--gt-radius-md);
  background: var(--gt-surface);
  transition:
    transform 220ms ease,
    border-color 220ms ease;
}

.gtansu-post-card:hover {
  border-color: rgba(78, 161, 255, 0.58);
  transform: translateY(-4px);
}

.gtansu-post-card__media {
  display: grid;
  min-height: 210px;
  overflow: hidden;
  place-items: center;
  background:
    linear-gradient(135deg, rgba(78, 161, 255, 0.18), rgba(184, 255, 90, 0.05)),
    #0a1320;
}

.gtansu-post-card__media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

.gtansu-post-card:hover .gtansu-post-card__media img {
  transform: scale(1.035);
}

.gtansu-post-card__fallback {
  color: var(--gt-blue);
  font: 700 34px/1 monospace;
}

.gtansu-post-card__body {
  padding: 24px;
}

.gtansu-post-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #74839a;
  font: 600 11px/1.4 monospace;
}

.gtansu-post-card__meta span {
  color: var(--gt-blue);
}

.gtansu-post-card h3 {
  margin: 14px 0 10px;
  font-size: 19px;
  line-height: 1.55;
}

.gtansu-post-card h3 a:hover {
  color: var(--gt-blue);
}

.gtansu-post-card__body > p {
  min-height: 76px;
  margin: 0;
  color: var(--gt-muted);
  font-size: 13px;
}

.gtansu-section-action {
  margin-top: 42px;
  text-align: center;
}

.gtansu-ai-notes {
  background:
    linear-gradient(90deg, rgba(78, 161, 255, 0.04), transparent 45%),
    var(--gt-bg);
}

.gtansu-ai-notes__layout {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 100px;
  align-items: start;
}

.gtansu-ai-notes__intro > p {
  margin-top: 24px;
}

.gtansu-terminal {
  margin-top: 34px;
  padding: 18px 20px;
  border: 1px solid var(--gt-border);
  border-radius: 13px;
  background: #060d17;
  font: 12px/1.7 monospace;
}

.gtansu-terminal span,
.gtansu-terminal strong {
  display: block;
}

.gtansu-terminal span {
  color: var(--gt-blue);
}

.gtansu-terminal strong {
  color: var(--gt-lime);
  font-weight: 500;
}

.gtansu-note-list {
  border-top: 1px solid var(--gt-border);
}

.gtansu-note {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) 24px;
  gap: 22px;
  align-items: center;
  min-height: 142px;
  padding: 24px 4px;
  border-bottom: 1px solid var(--gt-border);
  transition:
    padding 200ms ease,
    background 200ms ease;
}

.gtansu-note:hover {
  padding-right: 14px;
  padding-left: 14px;
  background: rgba(78, 161, 255, 0.045);
}

.gtansu-note__index {
  color: #5f7089;
  font: 600 12px/1 monospace;
}

.gtansu-note__copy small,
.gtansu-note__copy strong,
.gtansu-note__copy > span {
  display: block;
}

.gtansu-note__copy small {
  margin-bottom: 5px;
  color: var(--gt-blue);
  font: 700 10px/1.4 monospace;
  letter-spacing: 0.12em;
}

.gtansu-note__copy strong {
  font-size: 19px;
  line-height: 1.5;
}

.gtansu-note__copy > span {
  margin-top: 6px;
  color: var(--gt-muted);
  font-size: 13px;
}

.gtansu-note > svg {
  color: #64748b;
  transition:
    color 180ms ease,
    transform 180ms ease;
}

.gtansu-note:hover > svg {
  color: var(--gt-lime);
  transform: translateX(4px);
}

.gtansu-about {
  overflow: hidden;
  background: #0a1422;
}

.gtansu-about__grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 100px;
  align-items: center;
}

.gtansu-about__visual {
  position: relative;
  padding: 30px;
}

.gtansu-about__visual::before,
.gtansu-about__visual::after {
  position: absolute;
  border: 1px solid rgba(78, 161, 255, 0.24);
  border-radius: 24px;
  content: "";
}

.gtansu-about__visual::before {
  inset: 0 60px 60px 0;
}

.gtansu-about__visual::after {
  inset: 60px 0 0 60px;
  border-color: rgba(184, 255, 90, 0.15);
}

.gtansu-about__panel {
  position: relative;
  z-index: 2;
  min-height: 430px;
  padding: 42px;
  border: 1px solid var(--gt-border);
  border-radius: 22px;
  background:
    linear-gradient(145deg, rgba(78, 161, 255, 0.1), transparent 42%),
    #0c1726;
  box-shadow: var(--gt-shadow);
}

.gtansu-about__panel > span,
.gtansu-about__panel > small {
  display: block;
  color: #7d8ca1;
  font: 600 11px/1.4 monospace;
  letter-spacing: 0.12em;
}

.gtansu-about__panel > strong {
  display: block;
  margin: 52px 0 0;
  color: var(--gt-lime);
  font: 700 112px/0.8 Inter, sans-serif;
  letter-spacing: -0.08em;
}

.gtansu-about__panel > small {
  margin-top: 16px;
}

.gtansu-about__code {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-top: 38px;
  margin-top: 38px;
  border-top: 1px solid var(--gt-border);
  color: #8da0b9;
  font-size: 13px;
}

.gtansu-about__code code:nth-child(2) {
  color: var(--gt-blue);
}

.gtansu-about__code code:nth-child(3) {
  color: var(--gt-lime);
}

.gtansu-about__copy > p {
  margin-top: 22px;
}

.gtansu-about__principles {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.gtansu-about__principles span {
  padding: 8px 13px;
  border: 1px solid var(--gt-border);
  border-radius: 999px;
  color: #cbd5e1;
  font-size: 12px;
  font-weight: 600;
}

.gtansu-contact {
  background:
    radial-gradient(circle at 80% 20%, rgba(184, 255, 90, 0.08), transparent 24%),
    var(--gt-bg);
}

.gtansu-contact__panel {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 80px;
  padding: 64px;
  border: 1px solid rgba(78, 161, 255, 0.28);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(78, 161, 255, 0.09), transparent 40%),
    var(--gt-surface);
  box-shadow: var(--gt-shadow);
}

.gtansu-contact__copy > p {
  margin-top: 22px;
}

.gtansu-contact__signal {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 32px;
  color: var(--gt-lime);
  font: 700 11px/1.4 monospace;
  letter-spacing: 0.1em;
}

.gtansu-contact__form {
  padding: 30px;
  border: 1px solid var(--gt-border);
  border-radius: 18px;
  background: rgba(5, 11, 20, 0.52);
}

.gtansu-contact__form p {
  margin: 0 0 18px;
}

.gtansu-contact__form label {
  display: block;
  color: #d8e1ed;
  font-size: 13px;
  font-weight: 700;
}

.gtansu-contact__form input:not([type="submit"]),
.gtansu-contact__form textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border: 1px solid var(--gt-border);
  border-radius: 10px;
  margin-top: 7px;
  outline: none;
  background: #08121f;
  color: white;
  font: inherit;
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.gtansu-contact__form textarea {
  min-height: 130px;
  resize: vertical;
}

.gtansu-contact__form input:not([type="submit"]):focus,
.gtansu-contact__form textarea:focus {
  border-color: var(--gt-blue);
  box-shadow: 0 0 0 4px rgba(78, 161, 255, 0.12);
}

.gtansu-contact__form input[type="submit"] {
  min-height: 50px;
  padding: 12px 28px;
  border: 0;
  border-radius: 999px;
  background: var(--gt-lime);
  color: #071019;
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease;
}

.gtansu-contact__form input[type="submit"]:hover {
  box-shadow: 0 12px 28px rgba(184, 255, 90, 0.18);
  transform: translateY(-2px);
}

.gtansu-contact__form .wpcf7-spinner {
  background-color: var(--gt-blue);
}

.gtansu-contact__form .wpcf7-not-valid-tip {
  margin-top: 6px;
  color: #ff8f8f;
  font-size: 12px;
}

.gtansu-contact__form .wpcf7-response-output {
  padding: 12px 14px;
  border-radius: 10px;
  margin: 16px 0 0;
  font-size: 13px;
}

.gtansu-footer {
  padding: 38px 0;
  border-top: 1px solid var(--gt-border);
  background: var(--gt-bg-deep);
}

.gtansu-footer__inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px 30px;
  align-items: center;
}

.gtansu-footer__inner > p {
  grid-column: 1 / -1;
  grid-row: 2;
  margin: 0;
  color: #718096;
  font: 500 10px/1.5 monospace;
  text-align: left;
}

.gtansu-footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 4px 18px;
  color: #94a3b8;
  font-size: 12px;
}

.gtansu-footer__links a {
  min-height: 44px;
  padding: 11px 0;
}

.gtansu-footer__links a:hover {
  color: var(--gt-blue);
}

.gtansu-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 420ms ease,
    transform 420ms cubic-bezier(0.16, 1, 0.3, 1);
}

.gtansu-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .gtansu-nav {
    gap: 20px;
  }

  .gtansu-hero__grid {
    grid-template-columns: 1fr 0.9fr;
    gap: 42px;
  }

  .gtansu-hero h1 {
    font-size: clamp(46px, 5.7vw, 66px);
  }

  .gtansu-project {
    grid-column: span 6;
  }

  .gtansu-project:last-child {
    grid-column: 4 / span 6;
  }

  .gtansu-ai-notes__layout,
  .gtansu-about__grid {
    gap: 60px;
  }
}

@media (max-width: 900px) {
  .admin-bar .gtansu-header {
    top: 46px;
  }

  .gtansu-menu-button {
    position: relative;
    z-index: 1002;
    display: flex;
    width: 46px;
    height: 46px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 0;
    border: 1px solid var(--gt-border);
    border-radius: 12px;
    background: var(--gt-surface);
    color: white;
    cursor: pointer;
  }

  .gtansu-menu-button > span:not(.screen-reader-text) {
    width: 19px;
    height: 1px;
    background: currentColor;
    transition:
      transform 180ms ease,
      opacity 180ms ease;
  }

  .gtansu-menu-button[aria-expanded="true"] > span:nth-of-type(2) {
    transform: translateY(6px) rotate(45deg);
  }

  .gtansu-menu-button[aria-expanded="true"] > span:nth-of-type(3) {
    opacity: 0;
  }

  .gtansu-menu-button[aria-expanded="true"] > span:nth-of-type(4) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .gtansu-nav {
    position: fixed;
    inset: 0;
    z-index: 1001;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: center;
    gap: 4px;
    padding: 110px 28px 48px;
    background: rgba(5, 11, 20, 0.98);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition:
      opacity 180ms ease,
      transform 180ms ease;
  }

  .gtansu-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .gtansu-nav > a {
    min-height: 58px;
    padding: 14px 4px;
    border-bottom: 1px solid var(--gt-border);
    font-size: 18px;
  }

  .gtansu-nav .gtansu-nav__cta {
    margin-top: 18px;
    padding: 15px 20px;
    border-bottom: 1px solid rgba(184, 255, 90, 0.45);
  }

  .gtansu-hero {
    min-height: auto;
    padding: 150px 0 90px;
  }

  .gtansu-hero__grid {
    grid-template-columns: 1fr;
    gap: 64px;
  }

  .gtansu-hero__copy {
    max-width: 700px;
  }

  .gtansu-hero__visual {
    width: min(100%, 720px);
    margin-inline: auto;
  }

  .gtansu-section-heading,
  .gtansu-process .gtansu-container,
  .gtansu-ai-notes__layout,
  .gtansu-about__grid,
  .gtansu-contact__panel {
    grid-template-columns: 1fr;
  }

  .gtansu-section-heading,
  .gtansu-process .gtansu-container,
  .gtansu-ai-notes__layout,
  .gtansu-about__grid {
    gap: 48px;
  }

  .gtansu-section-heading > p {
    max-width: 640px;
  }

  .gtansu-process__intro {
    position: static;
  }

  .gtansu-post-grid {
    grid-template-columns: 1fr;
  }

  .gtansu-post-card {
    display: grid;
    grid-template-columns: 0.75fr 1.25fr;
  }

  .gtansu-post-card__media {
    min-height: 100%;
  }

  .gtansu-post-card__media img {
    height: 100%;
    aspect-ratio: auto;
  }

  .gtansu-post-card__body > p {
    min-height: auto;
  }

  .gtansu-about__visual {
    width: min(100%, 620px);
  }

  .gtansu-contact__panel {
    gap: 48px;
    padding: 48px;
  }

  .gtansu-footer__inner {
    grid-template-columns: 1fr 1fr;
  }

  .gtansu-footer__inner > p {
    grid-column: 1 / -1;
    grid-row: 2;
    text-align: left;
  }
}

@media (max-width: 640px) {
  .gtansu-container {
    width: min(calc(100% - 28px), var(--gt-container));
  }

  .gtansu-header {
    height: 72px;
  }

  .gtansu-brand__mark {
    width: 38px;
    height: 38px;
  }

  .gtansu-brand strong {
    font-size: 14px;
  }

  .gtansu-hero {
    padding: 126px 0 72px;
    background-size: 44px 44px, 44px 44px, auto;
  }

  .gtansu-hero h1 {
    font-size: clamp(39px, 12vw, 56px);
    line-height: 1.14;
  }

  .gtansu-hero__lead {
    margin-top: 24px;
    font-size: 15px;
  }

  .gtansu-actions {
    display: grid;
  }

  .gtansu-button {
    width: 100%;
  }

  .gtansu-tech-list {
    margin-top: 24px;
  }

  .gtansu-hero__visual {
    padding: 12px 4px 44px;
  }

  .gtansu-hero-card {
    border-radius: 16px;
    transform: none;
  }

  .gtansu-code-note {
    right: 0;
    bottom: 4px;
  }

  .gtansu-section {
    padding: 82px 0;
  }

  .gtansu-section-heading {
    gap: 24px;
    margin-bottom: 36px;
  }

  .gtansu-section-heading h2,
  .gtansu-process h2,
  .gtansu-ai-notes h2,
  .gtansu-about h2,
  .gtansu-contact h2 {
    font-size: 36px;
  }

  .gtansu-project-grid {
    display: block;
  }

  .gtansu-project {
    margin-bottom: 18px;
  }

  .gtansu-project__body {
    padding: 20px;
  }

  .gtansu-project__body > p {
    min-height: 0;
  }

  .gtansu-process__steps li {
    min-height: 150px;
    padding-left: 76px;
  }

  .gtansu-process__steps li > span {
    width: 52px;
    height: 52px;
    border-radius: 14px;
  }

  .gtansu-process__steps li::before {
    left: 26px;
  }

  .gtansu-post-card {
    display: block;
  }

  .gtansu-post-card__media {
    display: block;
    min-height: 0;
    aspect-ratio: 16 / 9;
  }

  .gtansu-post-card__media img {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    object-fit: cover;
  }

  .gtansu-note {
    grid-template-columns: 34px minmax(0, 1fr) 18px;
    gap: 12px;
    min-height: 154px;
  }

  .gtansu-note__copy strong {
    font-size: 17px;
  }

  .gtansu-note__copy > span {
    display: none;
  }

  .gtansu-about__visual {
    padding: 12px;
  }

  .gtansu-about__panel {
    min-height: 370px;
    padding: 30px;
  }

  .gtansu-about__panel > strong {
    font-size: 90px;
  }

  .gtansu-contact__panel {
    gap: 36px;
    padding: 30px 20px;
    border-radius: 22px;
  }

  .gtansu-contact__form {
    padding: 20px;
  }

  .gtansu-footer__inner {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .gtansu-footer__links {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .gtansu-lab-page *,
  .gtansu-lab-page *::before,
  .gtansu-lab-page *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .gtansu-reveal {
    opacity: 1;
    transform: none;
  }
}