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

html {
  color-scheme: dark;
  scroll-behavior: smooth;
}

body {
  min-width: 20rem;
  margin: 0;
  overflow-x: hidden;
  color: var(--color-text);
  background: var(--color-ink);
  font-family: var(--sans);
  font-size: var(--text-base);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  z-index: var(--z-grid);
  inset: 0;
  background-image:
    linear-gradient(var(--color-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-line) 1px, transparent 1px);
  background-size: 72px 72px;
  content: "";
  pointer-events: none;
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, transparent 75%);
  mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, transparent 75%);
}

body.menu-open {
  overflow: hidden;
}

.site-header,
.site-main,
.site-footer,
.skip-link,
.whatsapp-float {
  position: relative;
  z-index: var(--z-content);
}

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

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

button,
input,
textarea,
select {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid var(--color-red-hot);
  outline-offset: 3px;
}

::selection {
  color: #fff;
  background: var(--color-red);
}

h1,
h2,
h3,
h4 {
  color: var(--color-text);
  font-family: var(--disp);
  text-wrap: balance;
}

p,
li {
  text-wrap: pretty;
}

.site-main {
  min-height: 60vh;
  padding-top: var(--header-height);
}

.site-main.home-main {
  padding-top: 0;
}

.container {
  width: min(100% - 2.5rem, var(--container));
  margin-inline: auto;
}

.content-container {
  max-width: 52rem;
}

.section {
  padding-block: var(--space-8);
}

.section-heading {
  max-width: 52rem;
  margin: 0 0 var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-line-strong);
}

.section-heading h1,
.section-heading h2 {
  margin: 0;
  color: var(--color-text);
  font-family: var(--disp);
  font-size: var(--text-2xl);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.04;
  text-transform: uppercase;
}

.section-heading > p:last-child,
.taxonomy-banner {
  margin: 0 0 var(--space-6);
  overflow: hidden;
  border: 1px solid var(--color-line-strong);
  background: var(--color-panel);
}

.taxonomy-banner img {
  display: block;
  width: 100%;
  height: clamp(9rem, 26vw, 20rem);
  object-fit: cover;
  filter: brightness(0.92);
}

.taxonomy-heading > p:last-child {
  max-width: 42rem;
  color: var(--color-muted);
}

.engineering-section-heading {
  display: flex;
  gap: var(--space-4);
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-line-strong);
}

.engineering-section-heading h2 {
  margin: 0;
  font-size: var(--text-2xl);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1;
  text-transform: uppercase;
}

.engineering-section-heading > span {
  flex: 0 0 auto;
  color: var(--color-red-hot);
  font-family: var(--mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0 0 var(--space-3);
  color: var(--color-red-hot);
  font-family: var(--mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.6rem;
  border: 1px solid transparent;
  border-radius: 0;
  font-family: var(--disp);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.2;
  text-decoration: none;
  text-transform: uppercase;
  transition:
    color var(--transition),
    background-color var(--transition),
    border-color var(--transition),
    transform var(--transition);
}

.button:hover {
  transform: translateY(-2px);
}

.button:active {
  transform: translateY(1px);
}

.button--primary {
  color: #fff;
  background: var(--color-red);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 0.75rem), calc(100% - 0.75rem) 100%, 0 100%);
}

.button--primary:hover {
  color: var(--color-ink);
  background: var(--color-red-hot);
}

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

.button--ghost:hover,
.button--light:hover {
  color: #fff;
  background: var(--color-surface);
  border-color: var(--color-text);
}

.text-link {
  display: inline-flex;
  align-items: center;
  color: var(--color-red-hot);
  font-family: var(--mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
}

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

.card,
.empty-state {
  padding: var(--space-5);
  background: var(--color-panel);
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-panel);
}

.skip-link {
  position: fixed;
  z-index: var(--z-skip);
  top: var(--space-3);
  left: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text);
  background: var(--color-red);
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: translateY(0);
}

/* Header and navigation */
.site-header {
  position: fixed;
  z-index: var(--z-header);
  top: 0;
  right: 0;
  left: 0;
  min-height: var(--header-height);
  background: rgba(7, 16, 31, 0.88);
  border-bottom: 1px solid var(--color-line);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.admin-bar .site-header {
  top: 46px;
}

.header-inner {
  display: flex;
  min-height: var(--header-height);
  gap: var(--space-4);
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  display: inline-flex;
  flex-direction: column;
  color: var(--color-text);
  text-decoration: none;
}

.site-logo__wordmark,
.nav-drawer__brand {
  color: var(--color-text);
  font-family: var(--disp);
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  line-height: 1;
}

.site-logo__wordmark span,
.nav-drawer__brand span {
  color: var(--color-red-hot);
}

.site-logo small {
  display: block;
  margin-top: 0.28rem;
  color: var(--color-muted);
  font-family: var(--mono);
  font-size: 0.5rem;
  font-weight: 400;
  letter-spacing: 0.23em;
  line-height: 1;
}

.menu-toggle,
.menu-close {
  display: inline-flex;
  width: 2.75rem;
  height: 2.75rem;
  align-items: center;
  justify-content: center;
  padding: 0;
  color: var(--color-text);
  background: transparent;
  border: 1px solid var(--color-line);
  cursor: pointer;
}

.menu-toggle {
  flex-direction: column;
  gap: 0.3rem;
}

.menu-toggle span {
  width: 1.4rem;
  height: 1px;
  background: currentColor;
}

.menu-close {
  font-size: 2rem;
  line-height: 1;
}

.nav-drawer {
  position: fixed;
  z-index: var(--z-drawer);
  top: 0;
  right: 0;
  width: min(88vw, 24rem);
  height: 100dvh;
  padding: var(--space-5);
  overflow-y: auto;
  color: var(--color-text);
  background: var(--color-panel);
  border-left: 1px solid var(--color-line-strong);
  box-shadow: -1.5rem 0 4rem rgba(1, 7, 18, 0.55);
  transform: translateX(105%);
  visibility: hidden;
  transition: transform var(--transition), visibility 0s linear var(--transition);
}

.nav-drawer.is-open {
  transform: translateX(0);
  visibility: visible;
  transition: transform var(--transition);
}

.nav-drawer__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-line);
}

.primary-nav ul,
.footer-column ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.primary-nav a {
  position: relative;
  display: block;
  padding: var(--space-3) 0;
  color: var(--color-muted-strong);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.03em;
  text-decoration: none;
}

.primary-nav a:hover,
.primary-nav .current-menu-item > a,
.primary-nav .current_page_item > a {
  color: var(--color-text);
}

.primary-nav .current-menu-item > a::after,
.primary-nav .current_page_item > a::after {
  position: absolute;
  right: 0;
  bottom: 0.5rem;
  left: 0;
  height: 1px;
  background: var(--color-red-hot);
  content: "";
}

.header-cta {
  width: 100%;
  margin-top: var(--space-5);
}

.nav-backdrop {
  position: fixed;
  z-index: var(--z-backdrop);
  inset: 0;
  background: rgba(1, 7, 18, 0.82);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.nav-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

/* Breadcrumbs */
.breadcrumbs {
  padding-top: var(--space-5);
  color: var(--color-muted);
  font-family: var(--mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs a {
  color: var(--color-muted-strong);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--color-red-hot);
}

.breadcrumbs li + li::before {
  margin-right: var(--space-2);
  color: var(--color-red-hot);
  content: "/";
}

/* Homepage hero */
.home-hero {
  position: relative;
  display: flex;
  min-height: 100dvh;
  align-items: flex-end;
  overflow: hidden;
  background: var(--color-ink);
}

.home-hero__media,
.home-hero__media::after {
  position: absolute;
  inset: 0;
}

.home-hero__media picture {
  display: contents;
}

.home-hero__media::after {
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(7, 16, 31, 0.88) 0%, rgba(7, 16, 31, 0.25) 42%, rgba(7, 16, 31, 0.96) 88%),
    linear-gradient(90deg, rgba(7, 16, 31, 0.72), transparent 62%);
  content: "";
}

.home-hero__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 62%;
  animation: hero-zoom 18s ease-out both;
}

.home-hero__inner {
  position: relative;
  z-index: 2;
  padding-top: calc(var(--header-height) + var(--space-8));
  padding-bottom: var(--space-6);
}

.home-hero__kicker {
  margin: 0 0 var(--space-5);
  color: var(--color-red-hot);
  font-family: var(--mono);
  font-size: var(--text-xs);
  letter-spacing: 0.17em;
  text-transform: uppercase;
  animation: rise 0.8s 0.1s both;
}

.home-hero h1 {
  max-width: 15ch;
  margin: 0;
  font-family: var(--disp);
  font-size: var(--text-3xl);
  font-weight: 900;
  letter-spacing: -0.025em;
  line-height: 0.96;
  text-transform: uppercase;
  animation: rise 0.8s 0.25s both;
}

.home-hero h1 > span {
  display: block;
}

.home-hero__outline {
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(255, 255, 255, 0.82);
}

.home-hero__lead {
  max-width: 36rem;
  margin: var(--space-5) 0 0;
  color: var(--color-muted-strong);
  font-size: var(--text-lg);
  animation: rise 0.8s 0.4s both;
}

.home-hero__actions {
  margin-bottom: var(--space-7);
  animation: rise 0.8s 0.5s both;
}

.plates {
  display: grid;
  background: rgba(11, 24, 48, 0.82);
  border: 1px solid var(--color-line-strong);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  animation: rise 0.8s 0.65s both;
}

.plate {
  min-width: 0;
  padding: 1.15rem 1.25rem 1.25rem;
  border-bottom: 1px solid var(--color-line);
  font-family: var(--mono);
}

.plate:last-child {
  border-bottom: 0;
}

.plate__label,
.plate strong,
.plate > span:last-child {
  display: block;
}

.plate__label {
  margin-bottom: 0.4rem;
  color: var(--color-red-hot);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.plate strong {
  color: var(--color-text);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.plate > span:last-child {
  margin-top: 0.3rem;
  color: var(--color-muted);
  font-size: 0.75rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

@keyframes hero-zoom {
  from { transform: scale(1.08); }
  to { transform: scale(1); }
}

@keyframes rise {
  from { opacity: 0; transform: translateY(1.6rem); }
  to { opacity: 1; transform: translateY(0); }
}

/* Homepage systems */
.category-grid,
.why-grid,
.project-grid,
.product-grid,
.stats-grid {
  display: grid;
}

.category-grid {
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
}

.category-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  color: var(--color-text);
  background: var(--color-panel);
  text-decoration: none;
  transition: background-color var(--transition);
}

.category-card:hover {
  background: var(--color-surface);
}

.category-card__media {
  display: block;
  overflow: hidden;
  aspect-ratio: 4 / 2.6;
  background: var(--color-surface);
}

.category-card__media img,
.category-card__media .media-placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.03);
  transition: transform 500ms ease;
}

.category-card:hover .category-card__media img {
  transform: scale(1.045);
}

.category-card__body {
  display: flex;
  min-height: 15rem;
  flex: 1;
  flex-direction: column;
  padding: var(--space-5);
}

.category-card__index {
  color: var(--color-red-hot);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
}

.category-card__body > strong {
  margin-top: auto;
  padding-top: var(--space-6);
  font-family: var(--disp);
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1.08;
  text-transform: uppercase;
}

.category-card__description {
  margin-top: var(--space-2);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.category-card__spec {
  display: flex;
  gap: var(--space-3);
  justify-content: space-between;
  margin-top: var(--space-5);
  padding-top: var(--space-3);
  color: var(--color-muted);
  border-top: 1px dashed var(--color-line-strong);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.category-card__spec b {
  color: var(--color-red-hot);
  font-weight: 500;
}

/* Homepage statistics */
.stats-band {
  position: relative;
  padding-block: var(--space-7);
  background: linear-gradient(90deg, rgba(226, 38, 47, 0.11), transparent 42%);
  border-top: 1px solid var(--color-line-strong);
  border-bottom: 1px solid var(--color-line-strong);
}

.stats-grid {
  align-items: stretch;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
}

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

/* 数字长短不一时（如 "Since 2001" 折两行），把标签压到底部对齐，四格看齐 */
.stat > span:last-child {
  margin-top: auto;
}

.stat strong,
.stat span {
  display: block;
}

.stat strong {
  color: var(--color-text);
  font-family: var(--disp);
  font-size: clamp(2.35rem, 6vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat span {
  margin-top: var(--space-2);
  color: var(--color-muted);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* Homepage why */
.home-why,
.product-specifications,
.related-products,
.project-products,
.about-section--muted,
.faq-page {
  background: rgba(11, 24, 48, 0.45);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.why-grid {
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
}

.why-card {
  position: relative;
  min-height: 17rem;
  padding: var(--space-5);
  background: var(--color-panel);
}

.why-card__index {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  color: var(--color-red-hot);
  font-family: var(--mono);
  font-size: var(--text-xs);
}

.why-card__icon {
  display: grid;
  width: 3.25rem;
  aspect-ratio: 1;
  place-items: center;
  color: var(--color-red-hot);
  background: var(--color-surface);
  border: 1px solid var(--color-line-strong);
}

.why-card__icon svg {
  width: 1.75rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
}

.why-card h3 {
  margin: var(--space-7) 0 var(--space-3);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
}

.why-card p {
  margin: 0;
  color: var(--color-muted);
}

/* Homepage featured project */
.featured-project {
  display: grid;
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
}

.featured-project__media {
  position: relative;
  min-height: 20rem;
  overflow: hidden;
  background: var(--color-surface);
}

.featured-project__media > img,
.featured-project__media > .media-placeholder {
  width: 100%;
  height: 100%;
  min-height: 20rem;
  object-fit: cover;
}

.featured-project__certificate {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  margin: 0;
  padding: 2.5rem var(--space-5) var(--space-4);
  overflow: hidden;
  color: var(--color-text);
  background: linear-gradient(0deg, rgba(7, 16, 31, 0.96), transparent);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.featured-project__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-6);
  background: var(--color-panel);
}

.featured-project__location {
  margin: 0;
  color: var(--color-red-hot);
  font-family: var(--mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.featured-project h3 {
  margin: var(--space-4) 0;
  font-size: clamp(1.85rem, 4vw, 2.5rem);
  font-weight: 900;
  line-height: 1.04;
  text-transform: uppercase;
}

.featured-project__excerpt {
  margin: 0 0 var(--space-5);
  color: var(--color-muted);
}

.featured-project__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3) var(--space-5);
  margin: 0 0 var(--space-5);
  font-family: var(--mono);
  font-size: var(--text-xs);
}

.featured-project__meta div {
  min-width: 0;
}

.featured-project__meta dt,
.featured-project__meta dd {
  display: inline;
  margin: 0;
}

.featured-project__meta dt {
  color: var(--color-muted);
  text-transform: uppercase;
}

.featured-project__meta dd {
  margin-left: var(--space-2);
  color: var(--color-text);
  font-weight: 500;
}

/* Homepage projects carousel */
.home-projects .engineering-section-heading > span {
  margin-left: auto;
}

.projects-carousel__controls {
  display: none;
  gap: var(--space-2);
}

.projects-carousel__button {
  display: inline-grid;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  place-items: center;
  color: var(--color-text);
  background: transparent;
  border: 1px solid var(--color-line-strong);
  cursor: pointer;
  font-family: var(--mono);
  font-size: var(--text-base);
  transition: color var(--transition), background-color var(--transition), border-color var(--transition);
}

.projects-carousel__button:hover:not(:disabled) {
  color: #fff;
  background: var(--color-red);
  border-color: var(--color-red);
}

.projects-carousel__button:disabled {
  color: var(--color-muted);
  border-color: var(--color-line);
  cursor: not-allowed;
  opacity: 0.55;
}

.projects-carousel__track {
  display: grid;
  grid-auto-columns: calc((100% - var(--space-4)) / 1.1);
  grid-auto-flow: column;
  gap: var(--space-4);
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}

.projects-carousel__track::-webkit-scrollbar {
  display: none;
}

.projects-carousel__track .project-card {
  scroll-snap-align: start;
  scroll-snap-stop: always;
}

/* CTA */
.cta-band,
.product-inquiry {
  position: relative;
  overflow: hidden;
  background: var(--color-ink);
  border-top: 1px solid var(--color-line-strong);
}

.cta-band::before,
.product-inquiry::before {
  position: absolute;
  inset: 0;
  background: radial-gradient(38rem 18rem at 50% 100%, rgba(226, 38, 47, 0.22), transparent);
  content: "";
  pointer-events: none;
}

.cta-band {
  padding-block: var(--space-9);
}

.cta-band__inner {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  align-items: flex-start;
}

.cta-band h2,
.product-inquiry h2 {
  margin: 0;
  font-size: var(--text-2xl);
  font-weight: 900;
  line-height: 1;
  text-transform: uppercase;
}

.cta-band__inner > div > p:last-child,
.product-inquiry__grid > div > p:last-child {
  max-width: 38rem;
  color: var(--color-muted);
  font-family: var(--mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
}

/* Archive and shared cards */
.project-grid,
.product-grid,
.content-grid {
  gap: var(--space-5);
}

.project-card,
.product-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  overflow: hidden;
  background: var(--color-panel);
  border: 1px solid var(--color-line);
  transition: background-color var(--transition), transform var(--transition);
}

.project-card:hover,
.product-card:hover {
  background: var(--color-surface);
  transform: translateY(-0.2rem);
}

.project-card__image,
.product-card__image {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--color-surface);
}

/* 案例照片是宽幅航拍，用 16:9 才不会把场馆两侧切掉 */
.project-card__image {
  aspect-ratio: 16 / 9;
}

.project-card__image img,
.product-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms ease;
}

.project-card:hover img,
.product-card:hover img {
  transform: scale(1.04);
}

.project-card__body,
.product-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: var(--space-5);
}

.project-card h2,
.project-card h3,
.product-card h2 {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.15;
  text-transform: uppercase;
}

.project-card h2 a,
.project-card h3 a,
.product-card h2 a {
  text-decoration: none;
}

.project-card p,
.product-card__body > p:last-child {
  margin: var(--space-3) 0 0;
  color: var(--color-muted);
}

.project-card__year {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  padding: var(--space-1) var(--space-3);
  color: #fff;
  background: var(--color-red);
  font-family: var(--mono);
  font-size: var(--text-xs);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.project-card__cert {
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
  margin-top: auto !important;
  padding-top: var(--space-4);
  color: var(--color-red-hot) !important;
  border-top: 1px dashed var(--color-line-strong);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.product-card__terms {
  margin: 0 0 var(--space-3);
  color: var(--color-red-hot);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.media-placeholder {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 12rem;
  background:
    linear-gradient(135deg, transparent 49.5%, var(--color-line-strong) 50%, transparent 50.5%),
    var(--color-surface);
}

.section-heading-row {
  margin-bottom: var(--space-7);
}

.section-heading-row .section-heading {
  margin-bottom: var(--space-4);
}

/* Pagination */
.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
  margin-top: var(--space-7);
}

.page-numbers {
  display: grid;
  min-width: 2.75rem;
  min-height: 2.75rem;
  padding: var(--space-2);
  place-items: center;
  color: var(--color-muted-strong);
  background: var(--color-panel);
  border: 1px solid var(--color-line-strong);
  font-family: var(--mono);
  font-size: var(--text-xs);
  text-decoration: none;
}

.page-numbers.current,
.page-numbers:hover {
  color: #fff;
  background: var(--color-red);
  border-color: var(--color-red);
}

/* Product and project headers */
.product-header,
.project-header,
.page-hero {
  padding-top: var(--space-8);
}

.product-header,
.project-header,
.page-hero > .container {
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-line-strong);
}

.product-header h1,
.project-header h1,
.page-hero h1 {
  max-width: 18ch;
  margin: 0;
  font-size: var(--text-2xl);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1;
  text-transform: uppercase;
}

.product-header > p:last-child,
.project-meta {
  max-width: 48rem;
  margin: var(--space-4) 0 0;
  color: var(--color-muted);
  font-size: var(--text-lg);
}

.project-meta {
  font-family: var(--mono);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

.project-certification {
  display: inline-flex;
  gap: var(--space-3);
  align-items: center;
  margin: var(--space-5) 0 0;
  padding: var(--space-3) var(--space-4);
  color: var(--color-text);
  background: var(--color-panel);
  border: 1px solid var(--color-red);
  font-family: var(--mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
}

.project-certification span {
  color: var(--color-red-hot);
}

/* Galleries */
.product-overview__grid,
.product-inquiry__grid {
  display: grid;
  gap: var(--space-7);
}

.product-gallery__main {
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--color-surface);
  border: 1px solid var(--color-line-strong);
}

.product-gallery__main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-gallery__thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.product-gallery__thumbs button {
  overflow: hidden;
  padding: 0;
  aspect-ratio: 1;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  cursor: pointer;
}

.product-gallery__thumbs button[aria-pressed="true"] {
  border-color: var(--color-red-hot);
}

.product-gallery__thumbs img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-gallery {
  max-width: 68rem;
  margin-inline: auto;
}

.project-gallery .product-gallery__main {
  aspect-ratio: 16 / 9;
}

.project-content {
  padding-top: 0;
}

/* Product details */
.product-badges {
  display: grid;
  background: var(--color-line);
  border: 1px solid var(--color-line);
  gap: 1px;
}

.product-badges > span {
  padding: var(--space-4);
  color: var(--color-text);
  background: var(--color-panel);
  font-family: var(--mono);
  font-size: var(--text-sm);
  font-weight: 500;
}

.product-badges > .product-badges__cert {
  color: var(--color-red-hot);
  border-left: 3px solid var(--color-red);
}

.product-badges small {
  display: block;
  margin-bottom: var(--space-1);
  color: var(--color-muted);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.product-colors,
.product-scope {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-line);
}

.product-colors h2,
.product-scope h2 {
  margin: 0 0 var(--space-3);
  font-size: var(--text-lg);
  font-weight: 700;
  text-transform: uppercase;
}

.product-scope p {
  color: var(--color-muted);
}

.color-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.color-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-muted-strong);
  font-family: var(--mono);
  font-size: var(--text-xs);
}

.color-chip i {
  width: 1.5rem;
  aspect-ratio: 1;
  background: var(--chip-color);
  border: 1px solid rgba(238, 243, 251, 0.42);
}

.color-chip--text {
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
}

.color-chip--text i {
  display: none;
}

.product-summary > .button {
  margin-top: var(--space-5);
}

.spec-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-line-strong);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-panel);
}

.spec-table th,
.spec-table td {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-line);
  text-align: left;
}

.spec-table th {
  width: 45%;
  color: var(--color-muted);
  font-family: var(--mono);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.spec-table td {
  color: var(--color-red-hot);
  font-family: var(--mono);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.spec-table tr:last-child th,
.spec-table tr:last-child td {
  border-bottom: 0;
}

/* Forms */
.contact-grid {
  display: grid;
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
}

.contact-card,
.contact-form-wrap {
  padding: var(--space-5);
  background: var(--color-panel);
}

.contact-card h2,
.contact-form-wrap h2,
.about-section h2,
.certificate-group h2 {
  margin: 0;
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
}

.contact-card dl {
  margin: var(--space-6) 0 0;
}

.contact-card dl > div + div {
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-line);
}

.contact-card dt {
  color: var(--color-red-hot);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.contact-card dd {
  margin: var(--space-1) 0 0;
  color: var(--color-muted-strong);
}

.contact-form-wrap {
  display: grid;
  gap: var(--space-4);
}

.contact-form-placeholder,
.inquiry-placeholder,
.topthink-inquiry-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  padding: var(--space-5);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-line-strong);
}

.contact-form-wrap .topthink-inquiry-form {
  padding: var(--space-5);
}

.contact-form-placeholder label,
.inquiry-placeholder label,
.topthink-inquiry-form label {
  color: var(--color-muted-strong);
  font-family: var(--mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.04em;
}

.contact-form-placeholder input,
.contact-form-placeholder textarea,
.contact-form-placeholder select,
.inquiry-placeholder input,
.inquiry-placeholder textarea,
.inquiry-placeholder select,
.topthink-inquiry-form input,
.topthink-inquiry-form textarea,
.topthink-inquiry-form select {
  display: block;
  width: 100%;
  margin-top: var(--space-2);
  padding: 0.8rem 0.9rem;
  color: var(--color-text);
  background: var(--color-ink);
  border: 1px solid var(--color-line-strong);
  border-radius: 0;
}

.contact-form-placeholder input:focus,
.contact-form-placeholder textarea:focus,
.inquiry-placeholder input:focus,
.inquiry-placeholder textarea:focus,
.topthink-inquiry-form input:focus,
.topthink-inquiry-form textarea:focus {
  border-color: var(--color-red-hot);
  outline: 1px solid var(--color-red-hot);
  outline-offset: 0;
}

.contact-form-placeholder textarea,
.inquiry-placeholder textarea,
.topthink-inquiry-form textarea {
  resize: vertical;
}

.topthink-inquiry-form .inquiry-field--full,
.topthink-inquiry-form .inquiry-error {
  grid-column: 1 / -1;
}

.inquiry-honeypot {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.inquiry-error {
  margin: 0;
  padding: var(--space-3);
  color: var(--color-red-hot);
  background: var(--color-error-bg);
  border-left: 3px solid var(--color-red);
}

.form-note {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-xs);
}

.contact-form-placeholder button:disabled {
  cursor: not-allowed;
  opacity: 0.68;
}

.product-inquiry__grid {
  position: relative;
}

/* FAQ */
.faq-intro {
  margin-bottom: var(--space-6);
  color: var(--color-muted-strong);
}

.faq-list {
  display: grid;
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
}

.faq-item {
  background: var(--color-panel);
}

.faq-item summary {
  position: relative;
  padding: var(--space-5) 3.75rem var(--space-5) var(--space-5);
  color: var(--color-text);
  font-family: var(--disp);
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  text-transform: uppercase;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  position: absolute;
  top: 50%;
  right: var(--space-5);
  color: var(--color-red-hot);
  content: "+";
  font-family: var(--mono);
  font-size: var(--text-xl);
  font-weight: 400;
  transform: translateY(-50%);
}

.faq-item[open] summary {
  background: var(--color-surface);
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-answer {
  padding: var(--space-5);
  color: var(--color-muted-strong);
  border-top: 1px solid var(--color-line);
}

.faq-answer > *:first-child,
.faq-answer > *:last-child {
  margin-block: 0;
}

/* Certificates */
.certificate-group + .certificate-group {
  margin-top: var(--space-8);
}

.certificate-group > h2 {
  margin-bottom: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-line-strong);
}

.certificate-page__content {
  margin-bottom: var(--space-8);
}

.certificate-grid,
.certificate-grid .wp-block-gallery,
.certificate-grid .blocks-gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.certificate-grid--cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.certificate-grid--cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.certificate-grid--cols-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.certificate-grid > *,
.certificate-grid .wp-block-image,
.certificate-grid .blocks-gallery-item {
  margin: 0;
}

.certificate-grid > h2,
.certificate-grid > h3,
.certificate-grid > p,
.certificate-grid > .wp-block-gallery,
.certificate-grid > .blocks-gallery-grid {
  grid-column: 1 / -1;
}

.certificate-grid img {
  width: 100%;
  height: 100%;
  min-height: 12rem;
  object-fit: contain;
  padding: var(--space-3);
  background: var(--color-panel);
  border: 1px solid var(--color-line-strong);
  filter: brightness(0.94);
  transition: border-color var(--transition), filter var(--transition);
}

.certificate-grid a:hover img {
  border-color: var(--color-red-hot);
  filter: brightness(1);
}

.certificate-grid figure {
  display: grid;
  gap: var(--space-2);
}

.certificate-grid figcaption {
  color: var(--color-muted-strong);
  font-size: var(--text-sm);
}

.certificate-image-link {
  display: block;
}

/* About and standard content */
.about-section__grid {
  display: grid;
  gap: var(--space-5);
}

.about-section__grid > p {
  max-width: 48rem;
  margin: 0;
  color: var(--color-muted-strong);
}

.entry-content {
  color: var(--color-muted-strong);
}

.entry-content > *:first-child {
  margin-top: 0;
}

.entry-content > *:last-child {
  margin-bottom: 0;
}

.entry-content h2,
.entry-content h3,
.entry-content h4 {
  margin-top: 1.8em;
  margin-bottom: 0.6em;
  line-height: 1.15;
}

.entry-content h2 {
  font-size: var(--text-xl);
  text-transform: uppercase;
}

.entry-content a {
  color: var(--color-red-hot);
}

.entry-content blockquote {
  margin-inline: 0;
  padding: var(--space-4) var(--space-5);
  color: var(--color-text);
  background: var(--color-panel);
  border-left: 3px solid var(--color-red);
}

.entry-content table {
  width: 100%;
  border-collapse: collapse;
}

.entry-content th,
.entry-content td {
  padding: var(--space-3);
  border: 1px solid var(--color-line-strong);
  text-align: left;
}

.entry-content th {
  color: var(--color-red-hot);
  background: var(--color-panel);
  font-family: var(--mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
}

.entry-content pre,
.entry-content code {
  font-family: var(--mono);
}

.entry-content pre {
  overflow-x: auto;
  padding: var(--space-4);
  background: var(--color-panel);
  border: 1px solid var(--color-line);
}

.content-grid {
  display: grid;
}

.post-card h2 {
  margin-top: 0;
  font-size: var(--text-xl);
  line-height: 1.15;
  text-transform: uppercase;
}

/* ---------- 首页案例：3D 项目墙（对齐设计稿）---------- */
.legacy-wall {
  position: relative;
  overflow: hidden;
}

.legacy-wall__inner {
  display: grid;
  grid-template-columns: minmax(20rem, 26rem) 1fr;
  gap: var(--space-6);
  align-items: start;
}

.legacy-wall__copy { position: relative; z-index: 18; }

.legacy-wall__copy h2 {
  margin: 0.9rem 0 0;
  font-family: var(--disp);
  font-size: clamp(2.6rem, 4.6vw, 4.4rem);
  font-weight: 900;
  line-height: 0.92;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.legacy-wall__lead {
  margin: 1.4rem 0 0;
  max-width: 26rem;
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

.legacy-wall__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  margin-top: var(--space-5);
}

.legacy-wall__stats b {
  display: block;
  font-family: var(--disp);
  font-size: 1.7rem;
  font-weight: 900;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.legacy-wall__stats span {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.legacy-wall__copy .button { margin-top: var(--space-5); }

/* 舞台：透视容器，墙体溢出后由渐隐带收口 */
.legacy-wall__stage {
  position: relative;
  height: clamp(26rem, 42vw, 40rem);
  perspective: 1500px;
  perspective-origin: 40% 48%;
}

.legacy-wall__grid {
  position: absolute;
  inset: 0 -14% 0 0;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  grid-auto-rows: 7.9rem;
  gap: 12px;
  transform: rotateY(-20deg) rotateX(8deg) rotateZ(-2deg) translateX(4%);
  transform-style: preserve-3d;
}

.legacy-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
  background: var(--color-panel);
  border: 1px solid var(--color-line-strong);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.2);
  color: var(--color-text);
  text-decoration: none;
  transform: translateZ(0);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
  backface-visibility: hidden;
}

.legacy-card:hover,
.legacy-card:focus-visible {
  transform: translateZ(75px) scale(1.04);
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.34);
  border-color: var(--color-red-hot);
  z-index: 20;
}

.legacy-card__img {
  display: block;
  height: 5.4rem;
  overflow: hidden;
  background: var(--color-surface);
}


.legacy-card__img img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.legacy-card__meta { padding: 0.5rem 0.55rem 0.6rem; }

.legacy-card__meta span {
  display: block;
  font-family: var(--mono);
  font-size: 0.44rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--color-red-hot);
}

.legacy-card__meta strong {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.56rem;
  font-weight: 500;
  line-height: 1.3;
}

/* 渐隐带挂在区块上（不在舞台内），才能盖住溢出舞台的卡片 */
.legacy-wall__fade {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 78%;
  height: 15rem;
  z-index: 10;
  pointer-events: none;
  background: linear-gradient(to top, var(--color-ink) 0%, rgba(7, 16, 31, 0.9) 38%, rgba(7, 16, 31, 0) 100%);
}

@media (max-width: 1100px) {
  .legacy-wall__inner { grid-template-columns: 1fr; }
  .legacy-wall__stage { height: clamp(20rem, 60vw, 28rem); }
  .legacy-wall__grid {
    inset: 0 -30% 0 0;
    grid-auto-rows: 6.4rem;
  }
  .legacy-card__img { height: 4.2rem; }
}

@media (max-width: 640px) {
  .legacy-wall__stage { height: 17rem; }
  .legacy-wall__grid {
    inset: 0 -55% 0 0;
    grid-template-columns: repeat(5, 1fr);
    grid-auto-rows: 5.4rem;
  }
  .legacy-card__img { height: 3.5rem; }
  .legacy-card__meta { padding: 0.35rem 0.4rem 0.45rem; }
}

/* 关闭动效偏好：取消 3D 旋转，退回平铺 */
@media (prefers-reduced-motion: reduce) {
  .legacy-wall__grid { transform: none; }
  .legacy-card { transition: none; }
  .legacy-card:hover,
  .legacy-card:focus-visible { transform: none; }
}

/* ---------- 案例归档：引言与分类概览（对齐设计稿 timeline 段）---------- */
.archive-hero .legacy-wall__copy h1 {
  margin: 0.9rem 0 0;
  font-family: var(--disp);
  font-size: clamp(2.6rem, 4.6vw, 4.4rem);
  font-weight: 900;
  line-height: 0.92;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.archive-quote {
  position: relative;
  z-index: 18;
  max-width: 34rem;
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-line-strong);
}

.archive-quote strong {
  font-size: 1rem;
  font-weight: 700;
}

.archive-quote span {
  display: block;
  margin-top: 0.5rem;
  color: var(--color-muted);
  font-size: 0.86rem;
  line-height: 1.7;
}

.archive-overview {
  border-top: 1px solid var(--color-line);
  background: var(--color-panel);
}

.archive-overview__head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-5);
  margin-bottom: var(--space-5);
}

.archive-overview__head h2 {
  margin: 0.5rem 0 0;
  font-family: var(--disp);
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.archive-overview__head > p {
  max-width: 32rem;
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.archive-overview__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  border-top: 1px solid var(--color-line);
  border-left: 1px solid var(--color-line);
}

.archive-overview__cell {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-height: 10.5rem;
  padding: var(--space-4);
  border-right: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-surface);
  color: var(--color-text);
  text-decoration: none;
  transition: background 0.18s ease;
}

.archive-overview__cell:hover,
.archive-overview__cell:focus-visible { background: var(--color-surface-raised); }

.archive-overview__cell small {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--color-red-hot);
}

.archive-overview__cell h3 {
  margin: 0.2rem 0 0;
  font-size: 1.05rem;
  font-weight: 700;
}

.archive-overview__cell p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.8rem;
  line-height: 1.6;
}

.archive-overview__count {
  margin-top: auto;
  padding-top: var(--space-3);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-red-hot);
}

.project-group { scroll-margin-top: var(--space-4); }

/* ---------- 案例归档：分类分组 ---------- */
.project-jump {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.project-jump a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.45rem 0.9rem;
  background: var(--color-panel);
  border: 1px solid var(--color-line-strong);
  color: var(--color-text);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
}

.project-jump a:hover,
.project-jump a:focus-visible { border-color: var(--color-red-hot); }

.project-jump b { color: var(--color-red-hot); }

.project-group + .project-group { margin-top: var(--space-7); }

.project-group .project-grid { margin-top: var(--space-4); }

@media (max-width: 640px) {
  .project-wall { grid-template-columns: repeat(auto-fill, minmax(8rem, 1fr)); }
}

/* ---------- 文章详情页 ---------- */
.article-header {
  max-width: 68ch;
  margin-bottom: var(--space-6);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0 0 var(--space-3);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.article-meta a {
  color: var(--color-red-hot);
  text-decoration: none;
}

.article-meta a:hover { text-decoration: underline; }

.article-standfirst {
  margin: var(--space-3) 0 0;
  color: var(--color-muted);
  font-size: 1.05rem;
}

.article-hero {
  margin: 0 0 var(--space-6);
  overflow: hidden;
  border: 1px solid var(--color-line-strong);
  background: var(--color-panel);
}

.article-hero img {
  display: block;
  width: 100%;
  height: clamp(11rem, 30vw, 24rem);
  object-fit: cover;
}

.article-body { max-width: 68ch; }

.article-nav {
  display: grid;
  gap: 1px;
  max-width: 68ch;
  margin-top: var(--space-7);
  background: var(--color-line);
  border: 1px solid var(--color-line);
}

.article-nav__link {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-4);
  background: var(--color-panel);
  color: var(--color-text);
  text-decoration: none;
}

.article-nav__link:hover { border-color: var(--color-red-hot); }

.article-nav__link span {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-red-hot);
}

.article-nav__link--next { text-align: right; }

/* ---------- 文章列表卡片 ---------- */
.post-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.post-card__image {
  display: block;
  overflow: hidden;
  border-bottom: 1px solid var(--color-line);
}

.post-card__image img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.post-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
}

.post-card__body .text-link { margin-top: auto; }

.post-meta {
  color: var(--color-red-hot);
  font-family: var(--mono);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
}

.error-page {
  display: grid;
  min-height: 65vh;
  align-items: center;
}

.error-page h1 {
  margin: 0;
  font-size: var(--text-2xl);
  font-weight: 900;
  text-transform: uppercase;
}

.error-page p:not(.eyebrow) {
  color: var(--color-muted);
}

/* Footer */
.site-footer {
  color: var(--color-muted);
  background: rgba(7, 16, 31, 0.96);
  border-top: 1px solid var(--color-line-strong);
}

.footer-grid {
  display: grid;
  gap: var(--space-7);
  padding-block: var(--space-8);
}

.footer-column h2 {
  margin: 0 0 var(--space-4);
  color: var(--color-text);
  font-family: var(--mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.footer-brand h2 {
  color: var(--color-text);
  font-family: var(--disp);
  font-size: var(--text-xl);
  font-weight: 900;
  letter-spacing: 0.08em;
}

.footer-column a {
  display: inline-block;
  padding-block: var(--space-1);
  color: var(--color-muted-strong);
  text-decoration: none;
}

.footer-column a:hover {
  color: var(--color-red-hot);
}

.footer-brand p {
  max-width: 28rem;
}

.certification-placeholder {
  display: grid;
  width: 7rem;
  min-height: 4.5rem;
  margin-top: var(--space-5);
  place-items: center;
  color: var(--color-red-hot);
  background: var(--color-panel);
  border: 1px solid var(--color-line-strong);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 0.65rem), calc(100% - 0.65rem) 100%, 0 100%);
}

.certification-placeholder span {
  font-family: var(--mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
}

.footer-contact address {
  font-style: normal;
}

.footer-bottom {
  border-top: 1px solid var(--color-line);
}

.footer-bottom__inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-5);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
}

.footer-bottom__inner p {
  margin: 0;
}

.footer-bottom__inner a {
  color: var(--color-text);
}

.whatsapp-float {
  position: fixed;
  z-index: var(--z-float);
  right: var(--space-4);
  bottom: var(--space-4);
  display: grid;
  width: 3.5rem;
  aspect-ratio: 1;
  place-items: center;
  color: var(--color-text);
  background: var(--color-panel);
  border: 1px solid var(--color-red);
  box-shadow: var(--shadow-panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 0.65rem), calc(100% - 0.65rem) 100%, 0 100%);
  font-family: var(--mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: color var(--transition), background-color var(--transition), transform var(--transition);
}

.whatsapp-float:hover {
  color: #fff;
  background: var(--color-red);
  transform: translateY(-2px);
}

@media (min-width: 640px) {
  .container {
    width: min(100% - 4rem, var(--container));
  }

  .projects-carousel__track {
    grid-auto-columns: calc((100% - var(--space-5)) / 1.5);
    gap: var(--space-5);
  }

  .plates {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .plate:nth-child(odd) {
    border-right: 1px solid var(--color-line);
  }

  .plate:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .category-grid,
  .why-grid,
  .project-grid,
  .product-grid,
  .content-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .certificate-grid,
  .certificate-grid .wp-block-gallery,
  .certificate-grid .blocks-gallery-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .certificate-grid--cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .certificate-grid--cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .certificate-grid--cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .topthink-inquiry-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .section-heading-row,
  .cta-band__inner {
    display: flex;
    align-items: end;
    justify-content: space-between;
  }

  .section-heading-row .section-heading {
    margin-bottom: 0;
  }
}

@media (max-width: 900px) {
  .engineering-section-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .home-projects .engineering-section-heading > span {
    margin-left: 0;
  }

  .nav-drawer {
    display: block;
  }
}

@media (min-width: 783px) {
  .admin-bar .site-header {
    top: 32px;
  }
}

@media (min-width: 901px) {
  .section {
    padding-block: var(--space-10);
  }

  .projects-carousel__controls {
    display: flex;
  }

  .projects-carousel__track {
    grid-auto-columns: calc((100% - var(--space-5)) / 2.2);
    gap: var(--space-5);
  }

  .menu-toggle,
  .menu-close,
  .nav-drawer__header,
  .nav-backdrop {
    display: none;
  }

  .nav-drawer {
    position: static;
    display: flex;
    width: auto;
    height: auto;
    align-items: center;
    gap: clamp(1rem, 2vw, 2rem);
    padding: 0;
    overflow: visible;
    background: transparent;
    border: 0;
    box-shadow: none;
    transform: none;
    visibility: visible;
    transition: none;
  }

  .primary-nav ul {
    display: flex;
    align-items: center;
    gap: clamp(0.7rem, 1.5vw, 1.5rem);
  }

  .primary-nav a {
    padding: var(--space-2) 0;
  }

  .primary-nav .current-menu-item > a::after,
  .primary-nav .current_page_item > a::after {
    bottom: 0;
  }

  .header-cta {
    width: auto;
    margin-top: 0;
  }

  .home-hero__inner {
    padding-top: calc(var(--header-height) + var(--space-9));
    padding-bottom: var(--space-8);
  }

  .category-grid,
  .why-grid,
  .stats-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .project-grid,
  .product-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .featured-project {
    grid-template-columns: minmax(0, 1.25fr) minmax(22rem, 1fr);
  }

  .featured-project__media,
  .featured-project__media > img,
  .featured-project__media > .media-placeholder {
    min-height: 27rem;
  }

  .featured-project__body {
    padding: clamp(2.5rem, 4vw, 3.5rem);
  }

  .product-overview__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(20rem, 0.8fr);
    align-items: start;
  }

  .product-inquiry__grid {
    grid-template-columns: 0.8fr 1.2fr;
    align-items: start;
  }

  .about-section__grid {
    grid-template-columns: minmax(12rem, 0.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .contact-grid {
    grid-template-columns: minmax(18rem, 0.8fr) minmax(0, 1.2fr);
  }

  .contact-card,
  .contact-form-wrap {
    padding: var(--space-6);
  }

  .footer-grid {
    grid-template-columns: 1.5fr repeat(3, 1fr);
  }
}

@media (max-width: 639px) {
  .home-hero__lead {
    font-size: var(--text-base);
  }

  .home-hero__actions .button {
    width: 100%;
  }

  .stats-grid {
    gap: var(--space-6) var(--space-4);
  }

  .featured-project__meta {
    grid-template-columns: 1fr;
  }

  .certificate-grid,
  .certificate-grid .wp-block-gallery,
  .certificate-grid .blocks-gallery-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .certificate-grid,
  .certificate-grid--cols-2,
  .certificate-grid--cols-3,
  .certificate-grid--cols-4,
  .certificate-grid .wp-block-gallery,
  .certificate-grid .blocks-gallery-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}