.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: 1px solid var(--color-line);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(150%) blur(18px);
  transition: border-color 180ms ease, background 180ms ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-line);
  background: rgba(255, 255, 255, 0.94);
}

.site-header__inner {
  width: min(calc(100% - 64px), var(--container));
  min-height: var(--header-height);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 26px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.brand__mark {
  width: 30px;
  height: 30px;
  display: inline-grid;
  place-items: center;
  border-radius: 9px;
  background: var(--color-text);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 760;
}

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 3px;
}

.site-nav__link {
  position: relative;
  min-height: 42px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  border-radius: 8px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 590;
  transition: color 160ms ease, background 160ms ease;
}

.site-nav__link:hover,
.site-nav__link.is-current {
  color: var(--color-text);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  right: 14px;
  bottom: 4px;
  left: 14px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  opacity: 0;
  transform: scaleX(0.6);
  transition: opacity 160ms ease, transform 160ms ease;
}

.site-nav__link.is-current::after {
  opacity: 1;
  transform: scaleX(1);
}

.site-header__action {
  flex: 0 0 auto;
}

.nav-toggle {
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 0;
  display: none;
  place-items: center;
  border: 1px solid var(--color-line);
  border-radius: 50%;
  background: #fff;
  color: var(--color-text);
}

.nav-toggle span {
  position: absolute;
  width: 17px;
  height: 1.5px;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.nav-toggle span:first-child { transform: translateY(-5px); }
.nav-toggle span:last-child { transform: translateY(5px); }
.nav-toggle[aria-expanded="true"] span:first-child { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:last-child { transform: rotate(-45deg); }

.button {
  min-height: 44px;
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1px solid var(--color-text);
  border-radius: 999px;
  background: var(--color-text);
  color: #fff;
  font-size: 0.94rem;
  font-weight: 650;
  line-height: 1.2;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.button:hover {
  border-color: #000;
  background: #000;
  transform: translateY(-1px);
}

.button--secondary {
  border-color: var(--color-line-strong);
  background: transparent;
  color: var(--color-text);
}

.button--secondary:hover {
  border-color: var(--color-text);
  background: var(--color-surface);
}

.button--small {
  min-height: 38px;
  padding-inline: 17px;
  font-size: 0.86rem;
}

.button-row {
  margin-top: 24px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.button-row--center {
  justify-content: center;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--color-accent);
  font-weight: 650;
}

.text-link span {
  transition: transform 160ms ease;
}

.text-link:hover span {
  transform: translateX(3px);
}

.page-hero {
  padding: clamp(64px, 7vw, 84px) 0 clamp(48px, 5vw, 64px);
  border-bottom: 1px solid var(--color-line);
}

.page-hero--small {
  padding-bottom: 42px;
}

.page-hero__inner {
  max-width: 900px;
}

.page-hero h1 {
  margin-bottom: 16px;
}

.page-hero p:last-child {
  max-width: 680px;
  margin-bottom: 0;
  font-size: clamp(1rem, 1.6vw, 1.16rem);
}

.status {
  width: fit-content;
  padding: 5px 9px;
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
  line-height: 1.2;
}

.status--released {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.status--milestone {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

.status--planned {
  background: var(--color-planned-bg);
  color: var(--color-planned);
}

.meta-row,
.update-card__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--color-text-muted);
  font-size: 0.79rem;
}

.facts {
  margin: 22px 0 0;
  padding: 16px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 26px 44px;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.facts div {
  min-width: 150px;
}

.facts dt {
  color: var(--color-text-muted);
  font-size: 0.76rem;
}

.facts dd {
  margin: 4px 0 0;
  color: var(--color-text);
  font-size: 1.05rem;
  font-weight: 660;
}

.product-window {
  width: 100%;
  overflow: hidden;
  border: 1px solid rgba(20, 25, 40, 0.15);
  border-radius: 24px;
  background: #eef1f5;
  box-shadow: var(--shadow-soft);
}

.product-window__bar {
  min-height: 44px;
  padding: 0 16px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  background: rgba(255, 255, 255, 0.94);
  color: #565b66;
  font-size: 0.67rem;
  font-weight: 620;
}

.product-window__dots {
  display: flex;
  gap: 5px;
}

.product-window__dots i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #c4c7cd;
}

.product-window__status {
  justify-self: end;
  color: var(--color-success);
}

.product-window__body {
  min-height: 460px;
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr) 168px;
}

.mock-sidebar,
.mock-comments {
  padding: 18px 12px;
  background: #f7f8fa;
}

.mock-sidebar {
  border-right: 1px solid rgba(0, 0, 0, 0.07);
}

.mock-thumb {
  position: relative;
  height: 72px;
  margin-bottom: 12px;
  padding: 11px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 8px;
  background: #fff;
}

.mock-thumb.is-active {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.mock-thumb span {
  color: #8b9098;
  font-size: 0.55rem;
}

.mock-thumb b,
.mock-thumb i {
  position: absolute;
  left: 28px;
  display: block;
  height: 4px;
  border-radius: 999px;
  background: #c7ccd5;
}

.mock-thumb b { top: 26px; width: 50px; }
.mock-thumb i { top: 38px; width: 36px; background: #dfe2e7; }

.mock-workspace {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.mock-toolbar {
  min-height: 44px;
  padding: 0 18px;
  display: flex;
  align-items: center;
  gap: 18px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
  background: #fff;
  color: #6c727e;
  font-size: 0.6rem;
}

.mock-canvas {
  aspect-ratio: 16 / 9;
  width: calc(100% - 64px);
  max-width: 660px;
  margin: auto;
  padding: clamp(20px, 4vw, 52px);
  align-self: center;
  background: #fff;
  box-shadow: 0 10px 30px rgba(20, 30, 50, 0.1);
}

.mock-canvas__eyebrow {
  margin-bottom: 12px;
  color: var(--color-accent);
  font-size: clamp(0.5rem, 1vw, 0.7rem);
  font-weight: 700;
}

.mock-canvas > strong {
  display: block;
  font-size: clamp(1rem, 2.8vw, 2.35rem);
  letter-spacing: -0.04em;
  line-height: 1.08;
}

.mock-canvas__line {
  width: 52px;
  height: 3px;
  margin: 18px 0;
  border-radius: 999px;
  background: var(--color-accent);
}

.mock-canvas__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.mock-canvas__cards span {
  min-height: 58px;
  padding: 9px;
  border-radius: 7px;
  background: #f1f4f9;
  color: #59616d;
  font-size: clamp(0.45rem, 0.8vw, 0.62rem);
  font-weight: 640;
}

.mock-comments {
  border-left: 1px solid rgba(0, 0, 0, 0.07);
  color: #5b626d;
  font-size: 0.67rem;
}

.mock-comments b {
  display: block;
  margin-bottom: 16px;
  color: #2a2f36;
}

.mock-comments p {
  padding: 10px;
  border-radius: 8px;
  background: #fff;
  color: #5b626d;
}

.mock-comments span {
  color: var(--color-success);
}

.product-window--compact .product-window__body {
  min-height: 330px;
  grid-template-columns: 88px minmax(0, 1fr) 0;
}

.product-window--compact .mock-comments {
  display: none;
}

.product-window--compact .mock-thumb {
  height: 56px;
}

.product-window--compact .mock-canvas {
  width: calc(100% - 36px);
}

.update-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.update-card {
  padding: 24px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: #fff;
}

.update-card[hidden] {
  display: none;
}

.update-card__project {
  margin: 18px 0 7px;
  color: var(--color-text-muted);
  font-size: 0.79rem;
  font-weight: 650;
}

.update-card h3 {
  margin-bottom: 10px;
}

.update-card ul {
  margin: 20px 0;
  padding-left: 20px;
  color: var(--color-text-muted);
}

.update-card li + li {
  margin-top: 8px;
}

.update-card .text-link {
  margin-top: 10px;
  font-size: 0.9rem;
}

.updates-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.filter-bar {
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-button {
  min-height: 38px;
  padding: 0 15px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  background: #fff;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 0.88rem;
}

.updates-project {
  display: grid;
  gap: 28px;
}

.updates-project__header {
  padding: clamp(24px, 4vw, 38px);
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  align-items: center;
  gap: clamp(32px, 5vw, 60px);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface-soft);
}

.updates-project__header h2 {
  margin: 14px 0 10px;
}

.updates-project__header p {
  max-width: 560px;
}

.updates-project__facts {
  margin: 22px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.updates-project__facts strong {
  color: var(--color-text);
}

.updates-project__visual img {
  width: 100%;
}

.updates-project__records {
  padding-top: 4px;
}

.updates-project__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.updates-project__toolbar h2 {
  font-size: 1.35rem;
}

.project-switcher {
  margin-bottom: 24px;
  display: flex;
  gap: 8px;
}

.filter-button:hover,
.filter-button.is-active {
  border-color: var(--color-text);
  background: var(--color-text);
  color: #fff;
}

.empty-filter {
  padding: 40px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  text-align: center;
}

.site-footer {
  padding: 54px 0 28px;
  border-top: 1px solid var(--color-line);
  background: #fff;
}

.site-footer__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 40px;
}

.site-footer__brand {
  font-weight: 700;
}

.site-footer__top p {
  max-width: 430px;
  margin: 8px 0 0;
  font-size: 0.9rem;
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

.site-footer a:hover {
  color: var(--color-accent);
}

.site-footer__meta {
  margin-top: 32px;
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  border-top: 1px solid var(--color-line);
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

.site-footer__police-record {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.site-footer__police-record img {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
  object-fit: contain;
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  gap: clamp(40px, 6vw, 76px);
}

.about-statement p {
  color: var(--color-text-soft);
  font-size: clamp(1.1rem, 1.8vw, 1.4rem);
  letter-spacing: -0.015em;
  line-height: 1.55;
}

.about-principles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.about-principles article {
  padding: 24px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.about-principles article > span {
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 700;
}

.about-principles h2 {
  margin: 18px 0 8px;
  font-size: 1.25rem;
}

.about-principles p {
  margin-bottom: 0;
}

.not-found {
  min-height: calc(78svh - var(--header-height));
  display: grid;
  place-items: center;
  padding: 80px 0;
  text-align: center;
}

.not-found p:not(.eyebrow) {
  margin: 22px 0 0;
  font-size: 1.15rem;
}

@media (max-width: 900px) {
  .site-header__inner {
    width: min(calc(100% - 48px), var(--container));
  }

  .nav-toggle {
    display: grid;
  }

  .site-nav {
    position: absolute;
    top: calc(var(--header-height) - 4px);
    right: 16px;
    left: 16px;
    padding: 10px;
    display: none;
    border: 1px solid var(--color-line);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 18px 40px rgba(30, 35, 50, 0.12);
  }

  .site-nav.is-open {
    display: grid;
  }

  .site-nav__link {
    min-height: 46px;
    border-radius: 12px;
  }

  .site-header__action {
    display: none;
  }

  .product-window__body {
    min-height: 380px;
    grid-template-columns: 92px minmax(0, 1fr);
  }

  .mock-comments {
    display: none;
  }

  .update-grid {
    grid-template-columns: 1fr;
  }

  .updates-list {
    grid-template-columns: 1fr;
  }

  .updates-project__header {
    grid-template-columns: 1fr;
  }

  .updates-project__visual {
    max-width: 680px;
  }

  .about-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-header__inner {
    width: min(calc(100% - 36px), var(--container));
  }

  .brand__mark {
    width: 28px;
    height: 28px;
  }

  .product-window {
    border-radius: 18px;
  }

  .product-window__bar {
    grid-template-columns: 1fr auto;
  }

  .product-window__bar > span:nth-child(2) {
    display: none;
  }

  .product-window__body,
  .product-window--compact .product-window__body {
    min-height: 290px;
    grid-template-columns: 68px minmax(0, 1fr);
  }

  .mock-sidebar {
    padding-inline: 8px;
  }

  .mock-thumb,
  .product-window--compact .mock-thumb {
    height: 48px;
    padding: 7px;
  }

  .mock-thumb b,
  .mock-thumb i {
    left: 20px;
    max-width: 34px;
  }

  .mock-toolbar {
    gap: 10px;
    padding-inline: 12px;
    overflow: hidden;
  }

  .mock-toolbar span:nth-child(3),
  .mock-toolbar span:nth-child(4) {
    display: none;
  }

  .mock-canvas,
  .product-window--compact .mock-canvas {
    width: calc(100% - 22px);
    padding: 16px;
  }

  .mock-canvas__cards span {
    min-height: 36px;
    padding: 6px;
  }

  .site-footer__top {
    display: grid;
  }

  .site-footer__nav {
    gap: 12px 18px;
  }

  .site-footer__meta {
    display: grid;
    gap: 9px;
  }

  .about-principles {
    grid-template-columns: 1fr;
  }

  .updates-project__header {
    padding: 20px;
  }

  .updates-project__toolbar {
    display: grid;
  }
}