@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Space Grotesk', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
  background: #f5f5f5;
  color: #1f1f1f;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ===== Scroll margin for fixed nav ===== */
article[id] {
  scroll-margin-top: 80px;
}

/* ===== Custom Properties ===== */
:root {
  --c-white: #ffffff;
  --c-light: #f5f5f5;
  --c-dark: #1f1f1f;
  --c-dark-80: rgba(31,31,31,0.8);
  --c-dark-60: rgba(31,31,31,0.6);
  --c-dark-10: rgba(31,31,31,0.1);
  --c-dark-05: rgba(31,31,31,0.05);
  --c-accent: #e8e8e8;
  --shadow-sm: 0 2px 8px rgba(31,31,31,0.08);
  --shadow-md: 0 8px 24px rgba(31,31,31,0.12);
  --shadow-lg: 0 16px 48px rgba(31,31,31,0.16);
  --shadow-xl: 0 32px 80px rgba(31,31,31,0.22);
  --radius: 10px;
  --nav-h: 68px;
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Site Wrapper ===== */
.site-wrapper {
  position: relative;
  min-height: 100vh;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  z-index: 100;
  background: rgba(245,245,245,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-dark-10);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
}

/* Brand Mark */
.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  text-decoration: none;
  z-index: 101;
}

.logo-icon {
  display: block;
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.brand-icon {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--c-dark);
  letter-spacing: -0.5px;
  background: var(--c-dark);
  color: var(--c-white);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  box-shadow: var(--shadow-md);
}

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 101;
}

.ham-line {
  display: block;
  height: 2px;
  background: var(--c-dark);
  transition: var(--transition);
  border-radius: 2px;
}

.ham-line:nth-child(1) { width: 24px; }
.ham-line:nth-child(2) { width: 18px; }
.ham-line:nth-child(3) { width: 24px; }

.hamburger:hover .ham-line { background: var(--c-dark-60); }
.hamburger[aria-expanded="true"] .ham-line:nth-child(1) { transform: translateY(7px) rotate(45deg); width: 24px; }
.hamburger[aria-expanded="true"] .ham-line:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger[aria-expanded="true"] .ham-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); width: 24px; }

/* CTA Button */
.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--c-white);
  background: var(--c-dark);
  border: 2px solid var(--c-dark);
  padding: 10px 22px;
  min-height: 44px;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.cta-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--c-white);
  transform: translateX(-102%);
  transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1);
}

.cta-btn:hover::before { transform: translateX(0); }
.cta-btn:hover { color: var(--c-dark); box-shadow: var(--shadow-lg); }

.cta-btn span, .cta-btn { isolation: isolate; }

.hero-cta {
  font-size: 16px;
  padding: 14px 32px;
  margin-top: 8px;
  box-shadow: var(--shadow-lg);
}

/* ===== Fullscreen Menu ===== */
.fullscreen-menu {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s var(--transition);
}

.fullscreen-menu.is-open {
  pointer-events: auto;
  opacity: 1;
}

.menu-overlay-bg {
  position: absolute;
  inset: 0;
  background: var(--c-dark);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 0.44s cubic-bezier(0.77, 0, 0.18, 1);
}

.fullscreen-menu.is-open .menu-overlay-bg {
  transform: scaleY(1);
}

.menu-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  padding: 40px 24px;
  width: 100%;
  max-width: 600px;
}

.menu-close {
  position: absolute;
  top: -16px;
  right: 0;
  background: none;
  border: none;
  color: var(--c-white);
  font-size: 24px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  opacity: 0.7;
}

.menu-close:hover { opacity: 1; transform: rotate(90deg); }

.overlay-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: 100%;
}

.overlay-link {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(24px, 5vw, 42px);
  color: var(--c-white);
  text-decoration: none;
  letter-spacing: -0.02em;
  padding: 8px 0;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s ease calc(var(--i) * 0.06s), transform 0.4s ease calc(var(--i) * 0.06s), color var(--transition);
  text-align: center;
}

.fullscreen-menu.is-open .overlay-link {
  opacity: 1;
  transform: translateY(0);
}

.overlay-link:hover { color: var(--c-light); }

.menu-brand-large {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(48px, 12vw, 100px);
  color: rgba(255,255,255,0.06);
  letter-spacing: -0.04em;
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
}

/* ===== Hero ===== */
.hero-section {
  display: flex;
  align-items: stretch;
  min-height: 100vh;
  padding-top: var(--nav-h);
  position: relative;
  overflow: hidden;
  background: var(--c-dark);
}

.hero-media {
  position: relative;
  flex: 0 0 50%;
  max-width: 50%;
  overflow: hidden;
  z-index: 1;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: translateZ(0);
  transition: transform 0.6s var(--transition);
}

.hero-section:hover .hero-img {
  transform: scale(1.03);
}

.hero-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #2a2a2a 0%, #3a3a3a 50%, #1f1f1f 100%);
  min-height: calc(100vh - var(--nav-h));
}

.hero-slash {
  position: absolute;
  top: 0;
  right: -60px;
  width: 120px;
  height: 100%;
  background: var(--c-dark);
  clip-path: polygon(60px 0, 100% 0, 40px 100%, 0 100%);
  z-index: 2;
}

.hero-text {
  flex: 0 0 50%;
  max-width: 50%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  text-align: right;
  padding: 80px 64px 80px 80px;
  position: relative;
  z-index: 2;
  background: var(--c-dark);
}

.hero-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.hero-h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(32px, 4vw, 60px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--c-white);
  margin-bottom: 20px;
}

.hero-desc {
  font-size: clamp(15px, 1.2vw, 18px);
  line-height: 1.7;
  color: rgba(255,255,255,0.65);
  max-width: 400px;
  margin-bottom: 12px;
}

/* ===== Main ===== */
.site-main {
  background: var(--c-light);
  position: relative;
  z-index: 2;
}

.main-article {
  max-width: 1440px;
  margin: 0 auto;
  padding: 60px 24px 80px;
}

/* ===== Content + Aside Layout ===== */
.content-with-aside {
  display: flex;
  align-items: flex-start;
  gap: 40px;
}

/* Aside (left side) */
.content-aside {
  flex: 0 0 260px;
  width: 260px;
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  display: flex;
  flex-direction: column;
  gap: 20px;
  z-index: 3;
}

.aside-card {
  background: var(--c-white);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--c-dark-10);
  position: relative;
  z-index: 2;
  transition: box-shadow var(--transition), transform var(--transition);
}

.aside-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.aside-eyebrow {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-dark-60);
  margin-bottom: 6px;
}

.aside-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
  color: var(--c-dark);
}

.aside-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.aside-link {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-dark-80);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 6px;
  transition: background var(--transition), color var(--transition), transform var(--transition);
  border-left: 2px solid transparent;
}

.aside-link:hover {
  background: var(--c-light);
  color: var(--c-dark);
  border-left-color: var(--c-dark);
  transform: translateX(4px);
}

.aside-deco-card {
  background: var(--c-dark);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.aside-deco-card::before {
  content: '';
  position: absolute;
  width: 100px;
  height: 100px;
  background: rgba(255,255,255,0.04);
  border-radius: 50%;
  top: -30px;
  right: -20px;
}

.deco-num {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 36px;
  color: var(--c-white);
  letter-spacing: -0.04em;
  line-height: 1;
}

.deco-tag {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
}

/* Main Content Area */
.main-content-area {
  flex: 1;
  min-width: 0;
  position: relative;
  z-index: 1;
}

/* ===== Content Sections (page.content) ===== */
.main-content-area article {
  background: var(--c-white);
  border-radius: var(--radius);
  padding: 48px 48px;
  margin-bottom: 32px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--c-dark-10);
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition);
  opacity: 0;
  transform: translateY(24px);
}

.main-content-area article.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s ease, transform 0.5s ease, box-shadow var(--transition);
}

.main-content-area article:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* Glass effect for alternating sections */
.main-content-area article:nth-child(even) {
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-color: rgba(255,255,255,0.8);
}

/* Section divider accent */
.main-content-area article::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 60%;
  background: var(--c-dark);
  border-radius: var(--radius) 0 0 0;
  opacity: 0.12;
}

/* Typography inside content */
.main-content-area h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(22px, 2.5vw, 32px);
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--c-dark);
  margin-bottom: 16px;
}

.main-content-area h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: clamp(18px, 1.8vw, 22px);
  letter-spacing: -0.02em;
  color: var(--c-dark);
  margin: 24px 0 12px;
}

.main-content-area p {
  font-size: 16px;
  line-height: 1.75;
  color: #3a3a3a;
  margin-bottom: 14px;
}

.main-content-area ul,
.main-content-area ol {
  padding-left: 20px;
  margin-bottom: 16px;
}

.main-content-area li {
  font-size: 16px;
  line-height: 1.7;
  color: #3a3a3a;
  margin-bottom: 6px;
}

.main-content-area a {
  color: var(--c-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: opacity var(--transition);
}

.main-content-area a:hover { opacity: 0.65; }

.main-content-area small {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-dark-60);
  margin-bottom: 6px;
}

.main-content-area img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  margin: 16px 0;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--c-dark);
  color: var(--c-white);
  position: relative;
  overflow: hidden;
  z-index: 2;
}

.footer-top-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(60px, 12vw, 160px);
  letter-spacing: -0.05em;
  color: rgba(255,255,255,0.04);
  line-height: 0.85;
  pointer-events: none;
  user-select: none;
  padding: 32px 40px 0;
  overflow: hidden;
}

.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  max-width: 1440px;
  margin: 0 auto;
  padding: 48px 40px;
}

.footer-col-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-logo-link { display: inline-block; text-decoration: none; }

.footer-logo { display: block; filter: invert(1); }

.footer-brand-text {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 24px;
  color: var(--c-white);
  letter-spacing: -0.03em;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.5);
  max-width: 280px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col-eyebrow {
  display: block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
}

.footer-col-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: rgba(255,255,255,0.8);
  margin-bottom: 4px;
}

.footer-dl {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-dl dt,
.footer-dl dd {
  margin: 0;
  padding: 0;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  transition: color var(--transition), transform var(--transition);
  padding: 4px 0;
}

.footer-link:hover {
  color: var(--c-white);
  transform: translateX(4px);
}

.footer-info-text {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255,255,255,0.45);
}

.footer-domain {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.3);
  margin-top: 4px;
}

.footer-col-info {
  gap: 8px;
}

/* Footer Bottom */
.footer-bottom {
  max-width: 1440px;
  margin: 0 auto;
  padding: 20px 40px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 13px;
  color: rgba(255,255,255,0.35);
}

.footer-bottom-dl {
  list-style: none;
  display: flex;
  gap: 24px;
}

.footer-bottom-dl dt,
.footer-bottom-dl dd {
  margin: 0;
}

.footer-bottom-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  font-size: 13px;
  color: rgba(255,255,255,0.35);
  text-decoration: none;
  transition: color var(--transition);
  padding: 4px 0;
}

.footer-bottom-link:hover { color: var(--c-white); }

/* ===== Scroll Reveal ===== */
@media (prefers-reduced-motion: no-preference) {
  .main-content-area article {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.55s ease, transform 0.55s ease;
  }
  .main-content-area article.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding: 40px 24px;
  }
  .hero-text {
    padding: 60px 40px 60px 60px;
  }
}

@media (max-width: 768px) {
  :root { --nav-h: 60px; }

  .hero-section {
    flex-direction: column;
    min-height: 100vh;
  }

  .hero-media {
    flex: 0 0 45%;
    max-width: 100%;
    width: 100%;
    min-height: 45vh;
  }

  .hero-slash {
    right: auto;
    bottom: -40px;
    top: auto;
    left: 0;
    width: 100%;
    height: 80px;
    clip-path: polygon(0 40px, 100% 0, 100% 100%, 0 100%);
  }

  .hero-text {
    flex: 1;
    max-width: 100%;
    padding: 48px 24px 48px;
    align-items: flex-start;
    text-align: left;
  }

  .hero-desc { max-width: 100%; }

  .content-with-aside {
    flex-direction: column;
  }

  .content-aside {
    flex: none;
    width: 100%;
    position: static;
  }

  .aside-deco-card { display: none; }

  .main-article { padding: 40px 16px 60px; }

  .main-content-area article {
    padding: 32px 24px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 32px 20px;
  }

  .footer-top-brand {
    font-size: clamp(40px, 18vw, 80px);
    padding: 24px 20px 0;
  }

  .footer-bottom {
    padding: 16px 20px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .menu-brand-large { display: none; }
}

@media (max-width: 480px) {
  .header-inner { padding: 0 16px; }

  .hero-h1 { font-size: 28px; }

  .main-content-area article { padding: 24px 18px; }

  .main-content-area h2 { font-size: 20px; }

  .footer-bottom-dl { gap: 16px; }
}