@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@300;400;500;600;700&family=Poppins:wght@400;500;600;700&display=swap');

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-ink: #000000;
  --color-paper: #ffffff;
  --color-accent: #000000;
  --color-mid: #222222;
  --color-light: #f5f5f5;
  --color-border: #000000;
  --color-muted: #555555;
  --color-card-shadow: rgba(0,0,0,0.12);
  --font-head: 'Poppins', 'Open Sans', system-ui, sans-serif;
  --font-body: 'Open Sans', system-ui, sans-serif;
  --header-h: 64px;
  --anchor-h: 44px;
  --radius-card: 28px;
  --transition-std: 0.28s cubic-bezier(0.4,0,0.2,1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-paper);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  min-width: 320px;
  overflow-x: hidden;
}

article {
  scroll-margin-top: calc(var(--header-h) + var(--anchor-h) + 12px);
}

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

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

/* ===== OVERLAY MENU ===== */
.overlay-menu {
  position: fixed;
  inset: 0;
  background: var(--color-ink);
  color: var(--color-paper);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-std);
}

.overlay-menu.is-open {
  opacity: 1;
  pointer-events: all;
}

.overlay-close {
  position: absolute;
  top: 24px;
  right: 32px;
  background: none;
  border: none;
  color: var(--color-paper);
  font-size: 2rem;
  cursor: pointer;
  padding: 8px 12px;
  min-height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-std);
}

.overlay-close:hover {
  transform: rotate(90deg);
}

.overlay-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.overlay-link {
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--color-paper);
  letter-spacing: 0.02em;
  padding: 12px 24px;
  min-height: 48px;
  display: flex;
  align-items: center;
  position: relative;
  transition: letter-spacing var(--transition-std);
}

.overlay-link::after {
  content: '';
  position: absolute;
  bottom: 8px;
  left: 24px;
  right: 24px;
  height: 2px;
  background: var(--color-paper);
  transform: scaleX(0);
  transition: transform var(--transition-std);
}

.overlay-link:hover::after {
  transform: scaleX(1);
}

.overlay-link:hover {
  letter-spacing: 0.08em;
}

/* ===== HEADER ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--color-paper);
  border-bottom: 2px solid var(--color-ink);
}

.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: var(--header-h);
  padding: 0 24px;
  gap: 16px;
}

.header-brand {
  justify-self: center;
}

.brand-logo {
  display: flex;
  align-items: center;
}

.brand-text {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.logo-img {
  max-height: 40px;
  width: auto;
}

.header-left {
  display: flex;
  align-items: center;
}

.header-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 8px 10px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  position: relative;
  white-space: nowrap;
  transition: color var(--transition-std);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 10px;
  right: 10px;
  height: 1px;
  background: var(--color-ink);
  transform: scaleX(0);
  transition: transform var(--transition-std);
}

.nav-link:hover::after {
  transform: scaleX(1);
}

.hamburger {
  background: none;
  border: 2px solid var(--color-ink);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 10px 12px;
  min-height: 44px;
  min-width: 44px;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-std);
}

.hamburger:hover {
  background: var(--color-ink);
}

.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-ink);
  transition: background var(--transition-std);
}

.hamburger:hover span {
  background: var(--color-paper);
}

/* ===== STICKY ANCHOR BAR ===== */
.sticky-anchor {
  height: var(--anchor-h);
  border-top: 1px solid var(--color-ink);
  background: var(--color-ink);
  overflow: hidden;
}

.anchor-inner {
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 24px;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.anchor-inner::-webkit-scrollbar {
  display: none;
}

.anchor-link {
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-paper);
  padding: 0 14px;
  height: var(--anchor-h);
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  border-right: 1px solid rgba(255,255,255,0.2);
  transition: background var(--transition-std);
}

.anchor-link:first-child {
  border-left: 1px solid rgba(255,255,255,0.2);
}

.anchor-link:hover {
  background: rgba(255,255,255,0.12);
}

/* ===== HERO ===== */
.hero-section {
  margin-top: calc(var(--header-h) + var(--anchor-h));
  min-height: 70vh;
  border-bottom: 2px solid var(--color-ink);
  display: flex;
  align-items: center;
  background: var(--color-paper);
  overflow: hidden;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 0;
  width: 100%;
  min-height: 70vh;
}

.hero-content {
  padding: 80px 64px 80px 48px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  text-align: right;
  border-right: 2px solid var(--color-ink);
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 2px solid var(--color-ink);
  padding: 4px 14px;
  margin-bottom: 24px;
}

.hero-title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  max-width: 680px;
}

.hero-desc {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--color-muted);
  max-width: 480px;
}

.hero-deco {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 24px;
  padding: 48px 32px;
  background: var(--color-light);
}

.deco-card {
  background: var(--color-paper);
  border: 2px solid var(--color-ink);
  border-radius: var(--radius-card);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: 4px 4px 0 var(--color-ink);
  transition: transform var(--transition-std), box-shadow var(--transition-std);
}

.deco-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--color-ink);
}

.deco-card-2 {
  background: var(--color-ink);
  color: var(--color-paper);
  box-shadow: 4px 4px 0 #555;
}

.deco-card-2:hover {
  box-shadow: 6px 6px 0 #555;
}

.deco-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.deco-label {
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* ===== MAIN LAYOUT ===== */
main {
  padding: 0;
}

.wrap {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.content-section {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 0;
  border-bottom: 2px solid var(--color-ink);
  min-height: 60vh;
}

.main-article {
  padding: 64px 48px 64px 0;
  border-right: 2px solid var(--color-ink);
}

.article-body {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.8;
}

/* ===== ARTICLE CONTENT STYLES ===== */
.article-body h2 {
  font-family: var(--font-head);
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 2.5rem 0 0.6rem;
  padding-top: 1rem;
  border-top: 2px solid var(--color-ink);
}

.article-body h2 + p.subtitle,
.article-body h2 + p.subhead,
.article-body h2 + p.desc,
.article-body h2 + p.lead {
  color: var(--color-muted);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.article-body h3 {
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 2rem 0 0.5rem;
}

.article-body p {
  margin-bottom: 1.2rem;
}

.article-body ul,
.article-body ol {
  margin: 1rem 0 1.2rem 1.5rem;
}

.article-body li {
  margin-bottom: 0.5rem;
}

.article-body blockquote {
  border-left: 4px solid var(--color-ink);
  margin: 2rem 0;
  padding: 16px 24px;
  background: var(--color-light);
  font-style: italic;
  font-size: 1.1rem;
}

.article-body figure {
  margin: 2rem 0;
}

.article-body figcaption {
  font-size: 0.82rem;
  color: var(--color-muted);
  margin-top: 8px;
  letter-spacing: 0.03em;
}

.article-body article:first-of-type > p:first-of-type::first-letter,
.article-body > p:first-of-type::first-letter {
  float: left;
  font-family: var(--font-head);
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 0.85;
  margin-right: 8px;
  margin-top: 4px;
}

.article-body article {
  margin-bottom: 3rem;
  scroll-margin-top: calc(var(--header-h) + var(--anchor-h) + 12px);
}

.article-body a {
  border-bottom: 1px solid var(--color-ink);
  transition: background var(--transition-std);
  padding: 0 2px;
}

.article-body a:hover {
  background: var(--color-ink);
  color: var(--color-paper);
}

/* ===== ASIDE ===== */
.main-aside {
  padding: 64px 0 64px 40px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.aside-block {}

.aside-heading {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-ink);
}

.aside-block .subtitle {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin-top: 8px;
}

.pull-quote-block {
  background: var(--color-ink);
  color: var(--color-paper);
  padding: 24px;
  border-radius: 4px;
}

.pull-quote {
  border: none;
  padding: 0;
  margin: 0;
  background: none;
}

.pull-quote p {
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 600;
  font-style: normal;
  line-height: 1.5;
  letter-spacing: 0.01em;
}

.aside-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 12px;
}

.aside-nav-link {
  font-size: 0.88rem;
  font-weight: 500;
  padding: 8px 12px;
  min-height: 40px;
  display: flex;
  align-items: center;
  border: 1px solid transparent;
  border-radius: 4px;
  transition: border-color var(--transition-std), background var(--transition-std);
  letter-spacing: 0.02em;
}

.aside-nav-link:hover {
  border-color: var(--color-ink);
  background: var(--color-light);
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--color-ink);
  color: var(--color-paper);
}

.footer-cta {
  border-bottom: 1px solid rgba(255,255,255,0.15);
  padding: 80px 24px;
  text-align: center;
}

.footer-cta-inner {
  max-width: 640px;
  margin: 0 auto;
}

.footer-cta-title {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.footer-cta-desc {
  color: rgba(255,255,255,0.65);
  margin-bottom: 32px;
  font-size: 1rem;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 12px 40px;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  border: 2px solid var(--color-paper);
  transition: background var(--transition-std), color var(--transition-std);
}

.cta-btn:hover {
  background: transparent;
  color: var(--color-paper);
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  max-width: 1280px;
  margin: 0 auto;
  padding: 64px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}

.footer-brand-col {
  padding-right: 48px;
  border-right: 1px solid rgba(255,255,255,0.15);
}

.footer-brand-name {
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.footer-brand-desc {
  color: rgba(255,255,255,0.6);
  font-size: 0.92rem;
  line-height: 1.7;
}

.footer-links-col {
  padding-left: 48px;
}

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

.footer-nav-title {
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.45);
  margin-bottom: 12px;
}

.footer-nav-dl dd {
  padding: 0;
}

.footer-link {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.75);
  padding: 6px 0;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  transition: color var(--transition-std);
  letter-spacing: 0.02em;
}

.footer-link:hover {
  color: var(--color-paper);
}

.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.footer-copy {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
}

.footer-slogan {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.45);
}

/* ===== REVEAL ON SCROLL ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.stagger-list > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-list.visible > *:nth-child(1) { transition-delay: 0s; opacity: 1; transform: none; }
.stagger-list.visible > *:nth-child(2) { transition-delay: 0.08s; opacity: 1; transform: none; }
.stagger-list.visible > *:nth-child(3) { transition-delay: 0.16s; opacity: 1; transform: none; }
.stagger-list.visible > *:nth-child(4) { transition-delay: 0.24s; opacity: 1; transform: none; }
.stagger-list.visible > *:nth-child(5) { transition-delay: 0.32s; opacity: 1; transform: none; }
.stagger-list.visible > *:nth-child(6) { transition-delay: 0.40s; opacity: 1; transform: none; }
.stagger-list.visible > *:nth-child(7) { transition-delay: 0.48s; opacity: 1; transform: none; }

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal, .stagger-list > * {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .content-section {
    grid-template-columns: 1fr 260px;
  }

  .hero-grid {
    grid-template-columns: 1fr 240px;
  }

  .hero-content {
    padding: 60px 40px 60px 32px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    grid-template-columns: 1fr auto auto;
    padding: 0 16px;
  }

  .header-left {
    display: none;
  }

  .nav-left {
    display: none;
  }

  .nav-right {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-section {
    min-height: 70vh;
  }

  .hero-content {
    padding: 48px 24px 40px;
    align-items: flex-start;
    text-align: left;
    border-right: none;
    border-bottom: 2px solid var(--color-ink);
  }

  .hero-deco {
    flex-direction: row;
    padding: 24px 16px;
    gap: 12px;
    overflow-x: auto;
  }

  .deco-card {
    flex-shrink: 0;
    min-width: 120px;
  }

  .content-section {
    grid-template-columns: 1fr;
  }

  .main-article {
    padding: 40px 0 32px;
    border-right: none;
    border-bottom: 2px solid var(--color-ink);
  }

  .main-aside {
    padding: 40px 0;
  }

  .footer-main {
    grid-template-columns: 1fr;
  }

  .footer-brand-col {
    padding-right: 0;
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.15);
    padding-bottom: 40px;
    margin-bottom: 40px;
  }

  .footer-links-col {
    padding-left: 0;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }

  .anchor-link {
    padding: 0 10px;
    font-size: 0.68rem;
  }
}

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

  .hero-content {
    padding: 40px 16px 32px;
  }

  .hero-title {
    font-size: 1.8rem;
  }

  .article-body h2 {
    font-size: 1.4rem;
  }

  .footer-cta {
    padding: 56px 16px;
  }

  .footer-main {
    padding: 48px 16px;
  }
}

button[aria-expanded]{min-width:44px;min-height:44px}