/* ============================================================
   千里同風株式会社 — Main Stylesheet
   Design: Japanese minimalism + tech, generous whitespace
   ============================================================ */

/* === CSS VARIABLES === */
:root {
  /* Colors */
  --c-bg:           #F8F8F5;
  --c-bg-alt:       #F2F2EC;
  --c-surface:      #FFFFFF;
  --c-text:         #1C1C1C;
  --c-text-2:       #4A4A47;
  --c-text-3:       #8C8C88;
  --c-accent:       #1D3D2D;
  --c-accent-mid:   #3A6A4A;
  --c-accent-light: #EBF2ED;
  --c-border:       #E0E0D8;
  --c-border-light: #EBEBE5;

  /* Typography */
  --f-serif: 'Noto Serif JP', 'Noto Serif SC', Georgia, serif;
  --f-sans:  'Noto Sans JP', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --f-en:    'Inter', -apple-system, sans-serif;
  --f-mono:  'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;

  /* Layout */
  --nav-h:       72px;
  --max-w:       1280px;
  --page-px:     48px;

  /* Easing */
  --ease:        cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out:    cubic-bezier(0.0, 0.0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
}

/* === RESET === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--f-sans);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.8;
  overflow-x: hidden;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul, ol { list-style: none; }

/* === NAVIGATION === */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(248, 248, 245, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 300ms var(--ease), background 300ms var(--ease);
}
.nav.is-scrolled {
  border-color: var(--c-border);
}
.nav__container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--page-px);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1;
}
.nav__logo-kanji {
  font-family: var(--f-serif);
  font-size: 1.0625rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  color: var(--c-text);
  transition: color 200ms;
}
.nav__logo:hover .nav__logo-kanji { color: var(--c-accent); }
.nav__logo-sub {
  font-family: var(--f-sans);
  font-size: 0.5625rem;
  font-weight: 300;
  letter-spacing: 0.22em;
  color: var(--c-text-3);
}
.nav__right {
  display: flex;
  align-items: center;
  gap: 48px;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav__item { position: relative; }
.nav__link {
  font-family: var(--f-sans);
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--c-text-2);
  transition: color 200ms var(--ease);
  padding-bottom: 3px;
  position: relative;
  display: inline-block;
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0;
  width: 0; height: 1px;
  background: var(--c-accent);
  transition: width 300ms var(--ease-out);
}
.nav__item:hover .nav__link { color: var(--c-text); }
.nav__item:hover .nav__link::after { width: 100%; }
.nav__link.is-active { color: var(--c-accent); }
.nav__link.is-active::after { width: 100%; }

/* Dropdown */
.nav__dropdown {
  position: absolute;
  top: calc(100% + 20px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 148px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  padding: 6px 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 220ms var(--ease), transform 220ms var(--ease), visibility 220ms;
  pointer-events: none;
}
.nav__item:hover .nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: all;
}
.nav__dropdown-link {
  display: block;
  padding: 10px 22px;
  font-size: 0.8125rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--c-text-2);
  white-space: nowrap;
  transition: color 150ms, background 150ms;
}
.nav__dropdown-link:hover {
  color: var(--c-accent);
  background: var(--c-accent-light);
}

/* Language switcher */
.nav__lang {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav__lang-btn {
  font-family: var(--f-en);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--c-text-3);
  padding: 4px 7px;
  transition: color 150ms;
  cursor: pointer;
  border-radius: 2px;
}
.nav__lang-btn:hover { color: var(--c-accent); }
.nav__lang-btn.active { color: var(--c-accent); font-weight: 500; }
.nav__lang-sep {
  font-size: 0.625rem;
  color: var(--c-border);
  user-select: none;
  pointer-events: none;
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.nav__hamburger span {
  display: block;
  width: 22px; height: 1px;
  background: var(--c-text);
  transition: transform 300ms var(--ease), opacity 300ms, width 300ms;
  transform-origin: center;
}
.nav__hamburger.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav__hamburger.is-open span:nth-child(2) { opacity: 0; width: 0; }
.nav__hamburger.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Mobile overlay */
.nav__mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--c-bg);
  z-index: 99;
  padding: calc(var(--nav-h) + 40px) var(--page-px) 48px;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transition: opacity 300ms var(--ease), visibility 300ms;
}
.nav__mobile.is-open { opacity: 1; visibility: visible; }
.nav__mobile-section {
  margin-bottom: 36px;
  border-top: 1px solid var(--c-border);
  padding-top: 24px;
}
.nav__mobile-parent {
  font-family: var(--f-sans);
  font-size: 1.0625rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--c-text);
  margin-bottom: 14px;
}
.nav__mobile-child {
  display: block;
  font-size: 0.9375rem;
  font-weight: 300;
  color: var(--c-text-2);
  padding: 8px 0;
  letter-spacing: 0.04em;
  transition: color 150ms;
}
.nav__mobile-child:hover { color: var(--c-accent); }
.nav__mobile-lang {
  display: flex;
  gap: 20px;
  margin-top: 48px;
}
.nav__mobile-lang-btn {
  font-family: var(--f-sans);
  font-size: 0.9375rem;
  font-weight: 300;
  color: var(--c-text-3);
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: color 150ms;
  padding: 0;
}
.nav__mobile-lang-btn.active { color: var(--c-accent); }

/* === BASE LAYOUT === */
main { padding-top: var(--nav-h); }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--page-px);
}

/* === HERO === */
.hero {
  position: relative;
  height: 100svh;
  min-height: 620px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  overflow: hidden;
  padding: 0 var(--page-px);
}
.hero__bg-circle {
  position: absolute;
  width: min(88vmin, 700px);
  height: min(88vmin, 700px);
  border: 1px solid var(--c-border);
  border-radius: 50%;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0;
  animation: fadeIn 2.4s var(--ease-out) 0.2s forwards;
}
.hero__bg-circle-2 {
  position: absolute;
  width: min(55vmin, 440px);
  height: min(55vmin, 440px);
  border: 1px solid var(--c-border-light);
  border-radius: 50%;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0;
  animation: fadeIn 2.4s var(--ease-out) 0.5s forwards;
}
.hero__label {
  font-family: var(--f-mono);
  font-size: 0.625rem;
  letter-spacing: 0.3em;
  color: var(--c-text-3);
  text-transform: uppercase;
  margin-bottom: 52px;
  opacity: 0;
  animation: fadeUp 800ms var(--ease-out) 0.5s forwards;
}
.hero__name {
  font-family: var(--f-serif);
  font-size: clamp(3.5rem, 9vw, 6.5rem);
  font-weight: 300;
  letter-spacing: 0.35em;
  color: var(--c-text);
  line-height: 1;
  margin-bottom: 10px;
  opacity: 0;
  animation: fadeUp 1000ms var(--ease-out) 0.75s forwards;
}
.hero__kk {
  font-family: var(--f-sans);
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.45em;
  color: var(--c-text-3);
  margin-bottom: 64px;
  opacity: 0;
  animation: fadeUp 800ms var(--ease-out) 0.95s forwards;
}
.hero__divider {
  width: 0;
  height: 1px;
  background: var(--c-border);
  margin: 0 auto 52px;
  opacity: 1;
  animation: expandLine 800ms var(--ease-out) 1.15s forwards;
}
.hero__tagline {
  font-family: var(--f-serif);
  font-size: clamp(0.875rem, 1.8vw, 1.0625rem);
  font-weight: 300;
  line-height: 2.1;
  letter-spacing: 0.1em;
  color: var(--c-text-2);
  max-width: 580px;
  opacity: 0;
  animation: fadeUp 1000ms var(--ease-out) 1.4s forwards;
}
.hero__scroll {
  position: absolute;
  bottom: 48px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  opacity: 0;
  animation: fadeIn 800ms var(--ease-out) 2.2s forwards;
}
.hero__scroll-text {
  font-family: var(--f-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.25em;
  color: var(--c-text-3);
  text-transform: uppercase;
}
.hero__scroll-line {
  width: 1px; height: 44px;
  background: var(--c-border);
  position: relative;
  overflow: hidden;
}
.hero__scroll-line::after {
  content: '';
  position: absolute;
  top: -100%; left: 0;
  width: 100%; height: 100%;
  background: var(--c-accent-mid);
  animation: scrollTick 1.8s var(--ease-out) 2.6s infinite;
}

/* === SHARED SECTION STYLES === */
.section {
  padding: 128px var(--page-px);
  max-width: var(--max-w);
  margin: 0 auto;
}
.section--tight { padding-top: 0; }
.section--wide {
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}
.section__eyebrow {
  font-family: var(--f-mono);
  font-size: 0.625rem;
  letter-spacing: 0.32em;
  color: var(--c-text-3);
  text-transform: uppercase;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.section__eyebrow::before {
  content: '';
  display: block;
  width: 20px; height: 1px;
  background: currentColor;
  flex-shrink: 0;
}
.section__title {
  font-family: var(--f-serif);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 300;
  letter-spacing: 0.08em;
  line-height: 1.4;
  color: var(--c-text);
  margin-bottom: 32px;
}
.section__body {
  font-family: var(--f-sans);
  font-size: 1rem;
  font-weight: 300;
  line-height: 2;
  letter-spacing: 0.03em;
  color: var(--c-text-2);
  max-width: 540px;
}
.section__lead {
  font-family: var(--f-sans);
  font-size: 1.0625rem;
  font-weight: 300;
  line-height: 2;
  letter-spacing: 0.03em;
  color: var(--c-text-2);
  max-width: 680px;
  margin-bottom: 64px;
}

/* === MISSION / VISION GRID === */
.mvv-wrap {
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}
.mvv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: var(--max-w);
  margin: 0 auto;
}
.mvv-cell {
  padding: 96px var(--page-px);
  border-right: 1px solid var(--c-border);
}
.mvv-cell:last-child { border-right: none; }
.mvv-cell--accent {
  background: var(--c-accent);
}
.mvv-cell--accent .section__eyebrow { color: rgba(255,255,255,0.45); }
.mvv-cell--accent .section__eyebrow::before { background: rgba(255,255,255,0.3); }
.mvv-cell--accent .section__title { color: #FFFFFF; }
.mvv-cell--accent .section__body { color: rgba(255,255,255,0.7); }

/* === VALUES === */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 72px;
  border-top: 1px solid var(--c-border);
}
.value-card {
  padding: 48px 40px 48px 0;
  border-right: 1px solid var(--c-border);
}
.value-card:last-child { border-right: none; padding-right: 0; }
.value-card:not(:first-child) { padding-left: 40px; }
.value-card__number {
  font-family: var(--f-mono);
  font-size: 0.625rem;
  letter-spacing: 0.22em;
  color: var(--c-text-3);
  margin-bottom: 28px;
}
.value-card__name {
  font-family: var(--f-serif);
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--c-text);
  margin-bottom: 16px;
}
.value-card__desc {
  font-family: var(--f-sans);
  font-size: 0.9375rem;
  font-weight: 300;
  line-height: 1.95;
  letter-spacing: 0.02em;
  color: var(--c-text-2);
}

/* === CTA LINK === */
.cta-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 44px;
  font-family: var(--f-sans);
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--c-accent);
  border-bottom: 1px solid transparent;
  padding-bottom: 3px;
  transition: gap 250ms var(--ease), border-color 250ms;
}
.cta-link:hover { border-color: var(--c-accent); gap: 20px; }
.cta-link__arrow { display: inline-block; transition: transform 250ms var(--ease); }
.cta-link:hover .cta-link__arrow { transform: translateX(4px); }

/* === PAGE HEADER (inner pages) === */
.page-header {
  padding: 80px var(--page-px) 72px;
  border-bottom: 1px solid var(--c-border);
}
.page-header__container {
  max-width: var(--max-w);
  margin: 0 auto;
}

/* === TEAM === */
.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 80px;
  margin-top: 80px;
}
.team-member__photo {
  width: 100%;
  aspect-ratio: 3/4;
  background: var(--c-bg-alt);
  overflow: hidden;
  margin-bottom: 32px;
}
.team-member__photo-inner {
  width: 100%;
  height: 100%;
  background: linear-gradient(160deg, var(--c-bg-alt) 0%, var(--c-accent-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}
.team-member__photo-monogram {
  font-family: var(--f-serif);
  font-size: 3rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--c-accent);
  opacity: 0.4;
}
.team-member__role {
  font-family: var(--f-mono);
  font-size: 0.625rem;
  letter-spacing: 0.22em;
  color: var(--c-text-3);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.team-member__name {
  font-family: var(--f-serif);
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--c-text);
  margin-bottom: 6px;
}
.team-member__name-en {
  font-family: var(--f-en);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--c-text-3);
  margin-bottom: 24px;
}
.team-member__bio {
  font-family: var(--f-sans);
  font-size: 0.9375rem;
  font-weight: 300;
  line-height: 2;
  letter-spacing: 0.02em;
  color: var(--c-text-2);
}

/* === TIMELINE (Milestones) === */
.timeline {
  margin-top: 96px;
  position: relative;
  padding-left: 140px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 92px; top: 0; bottom: 0;
  width: 1px;
  background: var(--c-border);
}
.timeline__item {
  position: relative;
  padding-bottom: 72px;
}
.timeline__item::before {
  content: '';
  position: absolute;
  left: -52px; top: 6px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--c-accent);
  transform: translateX(-3.5px);
}
.timeline__year {
  position: absolute;
  left: -140px; top: 2px;
  font-family: var(--f-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  color: var(--c-text-3);
  white-space: nowrap;
}
.timeline__event {
  font-family: var(--f-serif);
  font-size: 1.25rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--c-text);
  margin-bottom: 14px;
}
.timeline__desc {
  font-family: var(--f-sans);
  font-size: 0.9375rem;
  font-weight: 300;
  line-height: 2;
  color: var(--c-text-2);
  max-width: 560px;
}

/* === PRODUCTS GRID === */
.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 56px;
  margin-top: 72px;
}
.product-card__media {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  margin-bottom: 28px;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  position: relative;
}
.product-card__placeholder {
  width: 100%; height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.product-card__coming-label {
  font-family: var(--f-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.28em;
  color: var(--c-text-3);
  text-transform: uppercase;
}
.product-card__category {
  font-family: var(--f-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.28em;
  color: var(--c-accent-mid);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.product-card__name {
  font-family: var(--f-serif);
  font-size: 1.375rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--c-text);
  margin-bottom: 14px;
}
.product-card__desc {
  font-family: var(--f-sans);
  font-size: 0.9375rem;
  font-weight: 300;
  line-height: 1.9;
  color: var(--c-text-2);
}

/* === DEMO CARDS === */
.demo-section-intro {
  margin-top: 48px;
  margin-bottom: 72px;
}
.demo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.demo-card {
  border: 1px solid var(--c-border);
  padding: 52px 48px;
  transition: border-color 300ms var(--ease), background 300ms var(--ease);
  cursor: default;
}
.demo-card:hover {
  border-color: var(--c-accent-mid);
  background: var(--c-accent-light);
}
.demo-card__icon {
  font-size: 1.5rem;
  color: var(--c-text-3);
  margin-bottom: 28px;
  line-height: 1;
}
.demo-card__title {
  font-family: var(--f-serif);
  font-size: 1.25rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--c-text);
  margin-bottom: 14px;
}
.demo-card__desc {
  font-family: var(--f-sans);
  font-size: 0.9375rem;
  font-weight: 300;
  line-height: 1.9;
  color: var(--c-text-2);
  margin-bottom: 28px;
}
.demo-card__status {
  font-family: var(--f-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.28em;
  color: var(--c-text-3);
  text-transform: uppercase;
  padding: 6px 12px;
  border: 1px solid var(--c-border);
  display: inline-block;
}

/* === BLOG === */
.blog-list {
  margin-top: 72px;
  border-top: 1px solid var(--c-border);
}
.blog-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 40px;
  padding: 40px 0;
  border-bottom: 1px solid var(--c-border-light);
  transition: opacity 250ms;
}
.blog-item:hover { opacity: 0.7; }
.blog-item__date {
  font-family: var(--f-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--c-text-3);
  padding-top: 4px;
  line-height: 1.6;
}
.blog-item__tag {
  font-family: var(--f-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.22em;
  color: var(--c-accent-mid);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.blog-item__title {
  font-family: var(--f-serif);
  font-size: 1.125rem;
  font-weight: 300;
  letter-spacing: 0.06em;
  color: var(--c-text);
  margin-bottom: 10px;
  line-height: 1.6;
}
.blog-item__excerpt {
  font-family: var(--f-sans);
  font-size: 0.875rem;
  font-weight: 300;
  line-height: 1.9;
  color: var(--c-text-2);
}
.blog-empty {
  padding: 96px 0;
  text-align: center;
  border-top: 1px solid var(--c-border);
}
.blog-empty p {
  font-family: var(--f-serif);
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--c-text-3);
}

/* === FOOTER === */
.footer {
  border-top: 1px solid var(--c-border);
  padding: 88px var(--page-px) 52px;
  margin-top: 0;
}
.footer__container {
  max-width: var(--max-w);
  margin: 0 auto;
}
.footer__top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 80px;
  margin-bottom: 88px;
}
.footer__brand-name {
  font-family: var(--f-serif);
  font-size: 1.125rem;
  font-weight: 300;
  letter-spacing: 0.22em;
  color: var(--c-text);
  margin-bottom: 4px;
}
.footer__brand-sub {
  font-family: var(--f-sans);
  font-size: 0.5625rem;
  font-weight: 300;
  letter-spacing: 0.24em;
  color: var(--c-text-3);
  margin-bottom: 28px;
}
.footer__tagline {
  font-family: var(--f-serif);
  font-size: 0.875rem;
  font-weight: 300;
  line-height: 1.9;
  letter-spacing: 0.06em;
  color: var(--c-text-2);
  max-width: 300px;
}
.footer__col-heading {
  font-family: var(--f-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.28em;
  color: var(--c-text-3);
  text-transform: uppercase;
  margin-bottom: 24px;
}
.footer__links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer__link {
  font-family: var(--f-sans);
  font-size: 0.875rem;
  font-weight: 300;
  letter-spacing: 0.04em;
  color: var(--c-text-2);
  transition: color 150ms;
}
.footer__link:hover { color: var(--c-accent); }
.footer__address {
  font-family: var(--f-sans);
  font-size: 0.875rem;
  font-weight: 300;
  line-height: 1.9;
  letter-spacing: 0.03em;
  color: var(--c-text-2);
  font-style: normal;
}
.footer__address a { transition: color 150ms; }
.footer__address a:hover { color: var(--c-accent); }
.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--c-border-light);
}
.footer__copy {
  font-family: var(--f-en);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--c-text-3);
}
.footer__social {
  display: flex;
  gap: 28px;
}
.footer__social-link {
  font-family: var(--f-en);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--c-text-3);
  transition: color 150ms;
  text-transform: uppercase;
}
.footer__social-link:hover { color: var(--c-accent); }

/* === ABOUT TEASER (homepage) === */
.about-teaser {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 96px;
  align-items: start;
  padding-top: 64px;
  border-top: 1px solid var(--c-border);
}
.about-teaser__visual {
  aspect-ratio: 1;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.about-teaser__visual-inner {
  font-family: var(--f-serif);
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 300;
  letter-spacing: 0.3em;
  color: var(--c-accent);
  opacity: 0.15;
}

/* === SCROLL ANIMATIONS === */
[data-animate] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 900ms var(--ease-out), transform 900ms var(--ease-out);
}
[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}
[data-animate="fade"] { transform: none; }
[data-animate="fade"].is-visible { opacity: 1; }
[data-animate-delay="1"] { transition-delay: 100ms; }
[data-animate-delay="2"] { transition-delay: 220ms; }
[data-animate-delay="3"] { transition-delay: 340ms; }
[data-animate-delay="4"] { transition-delay: 460ms; }
[data-animate-delay="5"] { transition-delay: 580ms; }

/* === KEYFRAMES === */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes expandLine {
  from { width: 0; }
  to   { width: 44px; }
}
@keyframes scrollTick {
  0%   { top: -100%; }
  100% { top: 100%; }
}

/* === RESPONSIVE — TABLET (≤1024px) === */
@media (max-width: 1024px) {
  :root { --page-px: 32px; }

  .nav__links, .nav__lang { display: none; }
  .nav__hamburger { display: flex; }
  .nav__mobile { display: block; }

  .mvv-grid { grid-template-columns: 1fr; }
  .mvv-cell { border-right: none; border-bottom: 1px solid var(--c-border); }
  .mvv-cell:last-child { border-bottom: none; }

  .values-grid {
    grid-template-columns: 1fr 1fr;
    border-left: none;
  }
  .value-card:nth-child(2) { border-right: none; padding-right: 0; }
  .value-card:nth-child(3) {
    grid-column: 1 / -1;
    border-right: none;
    border-top: 1px solid var(--c-border);
    padding-left: 0; padding-right: 0;
  }

  .about-teaser { grid-template-columns: 1fr; gap: 48px; }
  .about-teaser__visual { display: none; }

  .team-grid { grid-template-columns: 1fr; gap: 64px; max-width: 480px; }
  .products-grid { grid-template-columns: 1fr; max-width: 560px; }
  .demo-grid { grid-template-columns: 1fr; max-width: 560px; }
  .footer__top { grid-template-columns: 1fr; gap: 48px; }

  .section { padding: 96px var(--page-px); }
  .mvv-cell { padding: 72px var(--page-px); }
}

/* === RESPONSIVE — MOBILE (≤640px) === */
@media (max-width: 640px) {
  :root {
    --nav-h: 60px;
    --page-px: 24px;
  }

  .hero__name { letter-spacing: 0.18em; }
  .hero__scroll { bottom: 32px; }

  .section { padding: 72px var(--page-px); }
  .mvv-cell { padding: 56px var(--page-px); }

  .values-grid { grid-template-columns: 1fr; }
  .value-card, .value-card:not(:first-child) {
    padding: 36px 0;
    border-right: none;
    border-top: 1px solid var(--c-border);
  }
  .value-card:first-child { border-top: none; }
  .value-card:nth-child(3) { grid-column: auto; }

  .timeline { padding-left: 80px; }
  .timeline::before { left: 52px; }
  .timeline__item::before { left: -31px; }
  .timeline__year { left: -80px; font-size: 0.5625rem; }

  .blog-item { grid-template-columns: 1fr; gap: 8px; }
  .blog-item__date { margin-bottom: 0; }

  .footer { padding: 64px var(--page-px) 40px; }
  .footer__bottom { flex-direction: column; gap: 16px; text-align: center; }

  .page-header { padding: 56px var(--page-px) 48px; }
}