:root {
  --color-bg: #f2ecdf;
  --color-bg-alt: #ece0cd;
  --color-surface: rgba(255, 252, 246, 0.84);
  --color-surface-solid: #fffdf8;
  --color-text: #1f1a16;
  --color-text-muted: #74695d;
  --color-border: rgba(31, 26, 22, 0.12);
  --color-accent: #2d7dd2;
  --color-accent-light: rgba(181, 90, 54, 0.18);
  --color-shadow: 0 24px 60px rgba(71, 43, 30, 0.14);
  --color-hero-overlay: rgba( 31, 26, 22, 0.04 );
  --color-card-hover: rgba(181, 90, 54, 0.06);
  --color-link: var(--color-accent);
  --color-link-hover: #8b3e1f;
  --color-footer-bg: #e8dfcf;
  --color-footer-text: var(--color-text-muted);
}

:root {
  --font-body: "Iowan Old Style", "Palatino Linotype", "Palatino", "Georgia", "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  --font-display: var( --font-body );
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Cascadia Code", monospace;
  --text-xs: clamp(0.64rem, 1.5vw, 0.75rem);
  --text-sm: clamp(0.8rem, 1.8vw, 0.875rem);
  --text-base: clamp(1rem, 2.2vw, 1.125rem);
  --text-md: clamp(1.125rem, 2.5vw, 1.25rem);
  --text-lg: clamp(1.25rem, 3vw, 1.5rem);
  --text-xl: clamp(1.5rem, 4vw, 2rem);
  --text-2xl: clamp(2rem, 5vw, 3.3rem);
  --text-3xl: clamp(2.4rem, 6vw, 4.8rem);
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-bold: 700;
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.08em;
  --leading-tight: 1.04;
  --leading-snug: 1.3;
  --leading-normal: 1.7;
}

:root {
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --container-narrow: min(720px, calc(100vw - var(--space-8)));
  --container-normal: min(1080px, calc(100vw - var(--space-8)));
  --container-wide: min(1280px, calc(100vw - var(--space-8)));
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-full: 9999px;
  --shadow-card: var(--color-shadow);
  --shadow-elevated: 0 32px 80px rgba(71, 43, 30, 0.18);
  --backdrop-blur: blur(12px);
}

:root {
  --bp-sm: 480px;
  --bp-md: 720px;
  --bp-lg: 1080px;
  --bp-xl: 1440px;
}

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

body {
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}
a:hover {
  color: var(--color-link-hover);
}

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

.nav-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: var(--space-16) var(--space-6);
  text-align: center;
  background: radial-gradient(ellipse 80% 60% at 50% 30%, var(--color-accent-light), transparent 60%), linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.nav-hero__brand {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text);
  margin: 0 0 var(--space-4);
  line-height: var(--leading-tight);
}

.nav-hero__subtitle {
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: var(--weight-normal);
  color: var(--color-text-muted);
  max-width: 48ch;
  line-height: var(--leading-snug);
  margin: 0;
}

.nav-hero__scroll-hint {
  margin-top: var(--space-12);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  opacity: 0.6;
}

.brand-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  padding: var(--space-16) 0;
  max-width: var(--container-normal);
  margin: 0 auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}
@media (min-width: 720px) {
  .brand-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
  }
}

.brand-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-10) var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  backdrop-filter: var(--backdrop-blur);
  box-shadow: var(--shadow-card);
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}
.brand-card:hover, .brand-card:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevated);
  background: var(--color-surface-solid);
  outline: none;
}
.brand-card:focus-visible {
  box-shadow: 0 0 0 3px var(--color-accent), var(--shadow-elevated);
}

.brand-card__logo {
  width: 80px;
  height: 80px;
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
}
.brand-card__logo img,
.brand-card__logo svg {
  max-width: 100%;
  max-height: 100%;
}

.brand-card__name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text);
  margin: 0 0 var(--space-3);
}

.brand-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
  line-height: var(--leading-snug);
  max-width: 32ch;
  margin: 0 0 var(--space-5);
}

.brand-card__cta {
  display: inline-block;
  padding: var(--space-2) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-accent);
  transition: background 0.2s ease;
}
.brand-card:hover .brand-card__cta {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.brand-section__heading {
  text-align: center;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  margin: 0;
  padding-top: var(--space-6);
}

.site-footer {
  background: var(--color-footer-bg);
  border-top: 1px solid var(--color-border);
  padding: var(--space-10) var(--space-6);
  margin-top: var(--space-16);
}
@media (min-width: 720px) {
  .site-footer {
    padding: var(--space-12) var(--space-8);
  }
}

.footer__inner {
  max-width: var(--container-normal);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  text-align: center;
}
@media (min-width: 720px) {
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer__brand {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text);
}

.footer__links {
  display: flex;
  gap: var(--space-5);
  flex-wrap: wrap;
  justify-content: center;
}
.footer__links a {
  font-size: var(--text-xs);
  color: var(--color-footer-text);
  text-decoration: none;
  transition: color 0.2s ease;
}
.footer__links a:hover {
  color: var(--color-accent);
}

.footer__copyright {
  font-size: var(--text-xs);
  color: var(--color-footer-text);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}
.logo img,
.logo svg {
  height: 100%;
  width: auto;
  display: block;
}

.logo--sm {
  height: 24px;
}

.logo--md {
  height: 40px;
}

.logo--lg {
  height: 64px;
}

.logo--xl {
  height: 96px;
}

.logo-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-alt);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-align: center;
  padding: var(--space-4);
}

.logo-placeholder-svg {
  width: 100%;
  height: auto;
}
.logo-placeholder-svg rect {
  fill: var(--color-bg-alt);
  stroke: var(--color-border);
  stroke-width: 1;
}
.logo-placeholder-svg text {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  fill: var(--color-text-muted);
  text-anchor: middle;
  dominant-baseline: central;
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.animate-fade-in {
  animation: fade-in 0.6s ease-out both;
}

.animate-fade-in-delay-1 {
  animation-delay: 0.1s;
}

.animate-fade-in-delay-2 {
  animation-delay: 0.3s;
}

.animate-fade-in-delay-3 {
  animation-delay: 0.5s;
}

@keyframes scale-in {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}
.animate-scale-in {
  animation: scale-in 0.5s ease-out both;
}

@keyframes slide-left {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}
.animate-slide-left {
  animation: slide-left 0.5s ease-out both;
}

@keyframes slide-right {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}
.animate-slide-right {
  animation: slide-right 0.5s ease-out both;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 {
  transition-delay: 0.1s;
}

.reveal-delay-2 {
  transition-delay: 0.2s;
}

.reveal-delay-3 {
  transition-delay: 0.3s;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}
.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-accent), #d4896a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: radial-gradient(circle at top left, var(--color-accent-light), transparent 24%), linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
}

.nav-page__main {
  flex: 1;
}

.home-page {
  min-height: 100vh;
  background: radial-gradient(circle at top left, var(--color-accent-light), transparent 24%), linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
}

.home-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 85vh;
  padding: var(--space-16) var(--space-6);
  text-align: center;
  position: relative;
}

.home-hero__inner {
  max-width: var(--container-narrow);
}

.home-hero__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wide);
  line-height: var(--leading-tight);
  margin: 0 0 var(--space-4);
}

.home-hero__subtitle {
  font-size: var(--text-md);
  color: var(--color-text-muted);
  max-width: 48ch;
  line-height: var(--leading-snug);
  margin: 0 0 var(--space-8);
  margin-left: auto;
  margin-right: auto;
}

.home-hero__cta {
  margin-top: var(--space-4);
}

.home-hero__scroll {
  position: absolute;
  bottom: var(--space-8);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  opacity: 0.4;
  animation: fade-in 1s 1.5s ease-out both;
}

.btn {
  display: inline-block;
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-full);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  border: 2px solid var(--color-accent);
}
.btn--primary:hover {
  background: var(--color-link-hover);
  border-color: var(--color-link-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.home-section {
  padding: var(--space-20) var(--space-6);
  max-width: var(--container-normal);
  margin: 0 auto;
}
@media (min-width: 720px) {
  .home-section {
    padding: var(--space-24) var(--space-8);
  }
}

.home-section--alt {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  max-width: none;
  padding-left: calc((100vw - var(--container-normal)) / 2 + var(--space-6));
  padding-right: calc((100vw - var(--container-normal)) / 2 + var(--space-6));
}
@media (min-width: 720px) {
  .home-section--alt {
    padding-left: calc((100vw - var(--container-normal)) / 2 + var(--space-8));
    padding-right: calc((100vw - var(--container-normal)) / 2 + var(--space-8));
  }
}

.home-section__heading {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  margin: 0 0 var(--space-8);
  text-align: center;
}
@media (min-width: 720px) {
  .home-section__heading {
    margin-bottom: var(--space-12);
  }
}

.home-section__body {
  color: var(--color-text-muted);
  max-width: 60ch;
  line-height: var(--leading-normal);
}
.home-section__body + .home-section__body {
  margin-top: var(--space-4);
}

.home-grid {
  display: grid;
  gap: var(--space-6);
}
@media (min-width: 720px) {
  .home-grid {
    gap: var(--space-8);
  }
}

@media (min-width: 720px) {
  .home-grid--3col {
    grid-template-columns: repeat(3, 1fr);
  }
}

.home-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-solid);
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.home-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevated);
}

.home-card__icon {
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-5);
  display: flex;
  align-items: center;
  justify-content: center;
}
.home-card__icon img, .home-card__icon svg {
  max-width: 100%;
  max-height: 100%;
}

.home-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  margin: 0 0 var(--space-2);
}

.home-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
  margin: 0 0 var(--space-4);
}

.home-card__link {
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.home-split {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}
@media (min-width: 720px) {
  .home-split {
    flex-direction: row;
    align-items: center;
    gap: var(--space-16);
  }
}

.home-split__text {
  flex: 1;
}

.home-split__visual {
  flex: 1;
  display: flex;
  justify-content: center;
}

.home-visual-placeholder {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 4/3;
  background: var(--color-bg-alt);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.home-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  text-align: center;
}

.home-stat__number {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-accent);
  line-height: var(--leading-tight);
}
.home-stat__label {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.split-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  background: #1a1410;
  transition: opacity 0.5s ease;
}

.split-overlay__strips {
  display: flex;
  flex: 1;
  width: 100%;
}

.split-overlay__strip {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: #fff;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
  cursor: pointer;
}
.split-overlay__strip:last-child {
  border-right: none;
}
.split-overlay__strip::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
}
.split-overlay__strip::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40%;
  z-index: 1;
  opacity: 0;
  transition: opacity 1.2s ease;
}

.split-overlay__strip--vortek::before {
  background: radial-gradient(ellipse 80% 50% at 50% 80%, rgba(181, 90, 54, 0.25), transparent), linear-gradient(180deg, #1a1410 0%, #2a1f18 100%);
}

.split-overlay__strip--vortek::after {
  background: linear-gradient(0deg, rgba(181, 90, 54, 0.4), transparent);
}

.split-overlay__strip--pb::before {
  background: radial-gradient(ellipse 80% 50% at 50% 80%, rgba(90, 130, 180, 0.25), transparent), linear-gradient(180deg, #1a1410 0%, #1a2028 100%);
}

.split-overlay__strip--pb::after {
  background: linear-gradient(0deg, rgba(90, 130, 180, 0.4), transparent);
}

.split-overlay__strip--chiron::before {
  background: radial-gradient(ellipse 80% 50% at 50% 80%, rgba(140, 160, 100, 0.25), transparent), linear-gradient(180deg, #1a1410 0%, #1e2418 100%);
}

.split-overlay__strip--chiron::after {
  background: linear-gradient(0deg, rgba(140, 160, 100, 0.4), transparent);
}

.split-overlay__strips:hover .split-overlay__strip {
  opacity: 0.35;
  filter: grayscale(0.4);
}
.split-overlay__strips:hover .split-overlay__strip::after {
  opacity: 0;
  animation: none;
}

.split-overlay__strips:hover .split-overlay__strip:hover {
  opacity: 1;
  filter: grayscale(0);
}
.split-overlay__strips:hover .split-overlay__strip:hover::after {
  opacity: 1;
  animation: glow-breathe 4s ease-in-out infinite;
}

@keyframes glow-breathe {
  0%, 100% {
    opacity: 0.5;
  }
  50% {
    opacity: 1;
  }
}
.split-overlay__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.split-overlay__strip:hover .split-overlay__content {
  transform: translateY(-8px);
}

.split-overlay__logo {
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 0 40px rgba(255, 255, 255, 0.1));
  transition: filter 0.6s ease, transform 0.6s ease;
}
.split-overlay__logo img,
.split-overlay__logo svg {
  max-width: 100%;
  max-height: 100%;
}
.split-overlay__strip:hover .split-overlay__logo {
  filter: drop-shadow(0 0 60px rgba(255, 255, 255, 0.25));
  transform: scale(1.05);
}

.split-overlay__label {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  opacity: 0.7;
  transition: opacity 0.6s ease, letter-spacing 0.6s ease;
}
.split-overlay__strip:hover .split-overlay__label {
  opacity: 1;
  letter-spacing: 0.15em;
}

.split-overlay__hint {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: var(--tracking-wide);
  animation: fade-in 1s 2s ease-out both;
}

@media (max-width: 719px) {
  .split-overlay__strips {
    flex-direction: column;
  }
  .split-overlay__strip {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }
  .split-overlay__logo {
    width: 72px;
    height: 72px;
  }
}