:root {
  --pibg-bg: #f6f1eb;
  --pibg-surface: #fffdf9;
  --pibg-text: #141414;
  --pibg-muted: #68635c;
  --pibg-accent: #fbfaf7;
  --pibg-button: #171717;
  --pibg-link: #141414;
  --pibg-line: #d9d0c4;
  --pibg-hero-overlay: #121212;
  --pibg-heading-font: Iowan Old Style, Baskerville, "Times New Roman", "Noto Serif TC", serif;
  --pibg-body-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Microsoft JhengHei", sans-serif;
  --pibg-body-size: 18px;
  --pibg-body-size-mobile: 16px;
  --pibg-line-height: 1.7;
  --pibg-content-width: 1200px;
  --pibg-section-space: 96px;
  --pibg-section-space-mobile: 48px;
  --pibg-radius: 8px;
  --pibg-transition: 220ms ease;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--pibg-bg);
  color: var(--pibg-text);
  font-family: var(--pibg-body-font);
  font-size: var(--pibg-body-size);
  line-height: var(--pibg-line-height);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--pibg-link); text-decoration: none; }
a:hover { opacity: .85; }
img { display: block; max-width: 100%; height: auto; }
iframe { width: 100%; border: 0; }
button, input, textarea, select { font: inherit; }
.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-container {
  width: min(var(--pibg-content-width), calc(100vw - 48px));
  margin-inline: auto;
}
.site-main { overflow: clip; }
.entry-content,
.pibg-rich-text { padding-block: clamp(32px, 5vw, 48px); }
.pibg-editorial-content { padding-block: 0; }
.pibg-editorial-content > * + * { margin-top: 0; }
.pibg-editorial-content > :where(*:not(.alignfull)) { width: min(var(--pibg-content-width), calc(100vw - 48px)); margin-inline: auto; }
.pibg-editorial-content > :where(.alignwide) { width: min(calc(var(--pibg-content-width) + 240px), calc(100vw - 48px)); margin-inline: auto; }
.pibg-editorial-content > :where(.alignfull, [class*='pibg-block--']) { width: 100%; }
.entry-content > * + *,
.pibg-rich-text > * + * { margin-top: 1.2em; }
.pibg-rich-text h1,
.pibg-rich-text h2,
.pibg-rich-text h3,
.pibg-rich-text h4,
.pibg-rich-text h5,
.pibg-rich-text h6,
.pibg-section-title,
.pibg-block__title,
.pibg-card__title,
.pibg-default-hero__title,
.page-title-large,
.archive-card h3,
.site-title,
.site-footer__brand {
  font-family: var(--pibg-heading-font);
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 0;
}
.pibg-rich-text h2 { font-size: clamp(2rem, 4vw, 3.5rem); }
.pibg-rich-text h3 { font-size: clamp(1.4rem, 2.8vw, 2rem); }
.pibg-rich-text p,
.pibg-rich-text li,
.pibg-default-hero__text,
.pibg-card__excerpt,
.pibg-section-description,
.page-hero__text,
.archive-card__content p { color: var(--pibg-muted); }
.pibg-kicker,
.pibg-card__meta,
.archive-card__meta,
.meta-inline,
.site-title,
.site-footer__brand,
.primary-navigation a,
.footer-navigation a {
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.site-header {
  top: 0;
  z-index: 100;
  backdrop-filter: blur(18px);
  background: rgba(246,241,235,.82);
  border-bottom: 1px solid rgba(217,208,196,.6);
  transition: background var(--pibg-transition), border-color var(--pibg-transition), box-shadow var(--pibg-transition);
}
.site-header--sticky { position: sticky; }
.site-header--static { position: relative; }
.site-header.is-scrolled { box-shadow: 0 10px 30px rgba(20,20,20,.05); }
.site-header__inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.site-branding { display: flex; align-items: center; gap: 16px; }
.custom-logo-link, .site-title { display: inline-flex; align-items: center; }
.custom-logo { max-height: 40px; width: auto; }
.primary-navigation { margin-left: auto; }
.primary-navigation ul,
.footer-navigation ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
}
.primary-navigation li,
.footer-navigation li { position: relative; }
.primary-navigation a,
.footer-navigation a { display: inline-flex; padding: 10px 0; color: inherit; }
.primary-navigation .current-menu-item > a::after,
.primary-navigation .current_page_item > a::after,
.primary-navigation .current-page-ancestor > a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 4px;
  height: 1px;
  background: currentColor;
}
.primary-navigation ul ul {
  position: absolute;
  left: 0;
  top: calc(100% + 8px);
  min-width: 220px;
  padding: 14px 18px;
  display: grid;
  gap: 2px;
  background: rgba(255,253,249,.97);
  border: 1px solid var(--pibg-line);
  border-radius: var(--pibg-radius);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--pibg-transition), transform var(--pibg-transition), visibility var(--pibg-transition);
}
.primary-navigation li:hover > ul,
.primary-navigation li:focus-within > ul,
.primary-navigation li.submenu-open > ul {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.menu-toggle,
.submenu-toggle {
  display: none;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
}
.menu-toggle {
  width: 44px;
  height: 44px;
  padding: 0;
}
.menu-toggle__line {
  display: block;
  width: 22px;
  height: 1px;
  margin: 5px auto;
  background: currentColor;
}

.site-footer {
  border-top: 1px solid var(--pibg-line);
  background: rgba(255,253,249,.82);
}
.site-footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  padding: 32px 0 48px;
}
.site-footer__meta { display: grid; gap: 18px; justify-items: end; }
.site-footer__links { display: flex; flex-wrap: wrap; gap: 16px; color: var(--pibg-muted); }
.site-footer__text { color: var(--pibg-muted); max-width: 420px; }

.pibg-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 22px;
  border: 1px solid currentColor;
  border-radius: 999px;
  transition: background var(--pibg-transition), color var(--pibg-transition), border-color var(--pibg-transition), opacity var(--pibg-transition), transform var(--pibg-transition);
}
.pibg-button:hover { transform: translateY(-1px); }
.pibg-button.is-primary {
  background: var(--pibg-button);
  color: var(--pibg-accent);
  border-color: var(--pibg-button);
}
.pibg-button.is-secondary {
  background: transparent;
  color: var(--pibg-text);
  border-color: rgba(20,20,20,.22);
}

.pibg-default-hero {
  position: relative;
  border-bottom: 1px solid var(--pibg-line);
  background: linear-gradient(180deg, rgba(255,253,249,.72), rgba(246,241,235,1));
}
.pibg-default-hero.has-image { color: var(--pibg-accent); }
.pibg-default-hero__media {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.pibg-default-hero__media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(18,18,18,.18), rgba(18,18,18,.66));
}
.pibg-default-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.pibg-default-hero__inner {
  position: relative;
  min-height: min(86vh, 900px);
  display: flex;
  align-items: end;
  padding: clamp(112px, 14vw, 180px) 0 64px;
}
.pibg-default-hero__content { max-width: 720px; }
.pibg-default-hero__title { font-size: clamp(3rem, 8vw, 6.8rem); }
.pibg-default-hero__text { max-width: 620px; font-size: clamp(1rem, 2vw, 1.2rem); }
.pibg-default-hero.has-image .pibg-default-hero__text,
.pibg-default-hero.has-image .pibg-kicker { color: rgba(255,250,247,.86); }

.pibg-archive-section {
  padding: var(--pibg-section-space) 0;
  border-top: 1px solid var(--pibg-line);
}
.pibg-section-header { max-width: 820px; margin-bottom: 28px; }
.pibg-section-title { font-size: clamp(2rem, 4vw, 4rem); }
.pibg-card-grid,
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}
.pibg-card,
.archive-card,
.portfolio-card {
  border: 1px solid var(--pibg-line);
  border-radius: var(--pibg-radius);
  overflow: hidden;
  background: rgba(255,253,249,.7);
}
.pibg-card__media,
.archive-card__image,
.portfolio-card__media {
  display: block;
  aspect-ratio: 4 / 5;
  background: rgba(20,20,20,.04);
}
.archive-card--project .archive-card__image,
.pibg-card.post-type-project .pibg-card__media,
.portfolio-card.post-type-project .portfolio-card__media { aspect-ratio: 16 / 10; }
.pibg-card__media img,
.archive-card__image img,
.portfolio-card__media img,
.split-layout__media img,
.section-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.pibg-card__body,
.archive-card__content,
.portfolio-card__body { padding: 18px 20px 24px; }
.pibg-card__title,
.archive-card h3,
.portfolio-card__title { font-size: clamp(1.35rem, 2vw, 1.9rem); margin-bottom: 10px; }
.pibg-card__placeholder { display: block; width: 100%; height: 100%; min-height: 240px; }

.page-hero,
.page-section,
.split-layout,
.feature-banner,
.section-image-frame,
.timeline-list,
.timeline-item,
.compare-board,
.faq-list,
.faq-item,
.contact-card {
  width: 100%;
}
.page-hero { border-bottom: 1px solid var(--pibg-line); }
.page-hero__inner { padding: 120px 0 56px; }
.page-title-large { font-size: clamp(2.6rem, 7vw, 5.5rem); }
.page-section { padding: var(--pibg-section-space) 0; }
.split-layout,
.feature-banner {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 48px;
  align-items: start;
}
.section-image-frame,
.contact-card,
.timeline-item,
.compare-board,
.faq-item {
  border: 1px solid var(--pibg-line);
  border-radius: var(--pibg-radius);
  background: rgba(255,253,249,.7);
}
.section-image-frame { min-height: 420px; overflow: hidden; }
.timeline-list { display: grid; gap: 18px; }
.timeline-item { display: grid; grid-template-columns: 180px 1fr; gap: 24px; padding: 24px; }
.compare-board { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); overflow: hidden; }
.compare-board__cell { padding: 28px; text-align: center; border-right: 1px solid var(--pibg-line); }
.compare-board__cell:last-child { border-right: 0; }
.compare-board__cell--dark { background: #151515; color: var(--pibg-accent); }
.faq-list { display: grid; gap: 16px; }
.faq-item { padding: 20px 22px; }
.faq-item summary { cursor: pointer; font-family: var(--pibg-heading-font); font-size: 1.3rem; }

.pibg-editor-label {
  margin-bottom: 10px;
  color: #666;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.pibg-editor-repeater {
  margin-top: 14px;
  padding: 14px;
  border: 1px solid #d9d9d9;
  border-radius: 8px;
  background: #fff;
}
.pibg-editor-repeater__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

@media (max-width: 1024px) {
  .pibg-card-grid,
  .card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  body { font-size: var(--pibg-body-size-mobile); }
  .site-container { width: calc(100vw - 32px); }
  .menu-toggle { display: inline-block; }
  .primary-navigation {
    position: fixed;
    inset: 72px 0 auto 0;
    padding: 18px 16px 24px;
    background: rgba(255,253,249,.98);
    border-bottom: 1px solid var(--pibg-line);
    transform: translateY(-110%);
    transition: transform var(--pibg-transition);
  }
  .primary-navigation.is-open { transform: translateY(0); }
  .primary-navigation > ul { display: grid; gap: 0; }
  .primary-navigation ul ul {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
    margin-top: 8px;
    padding: 10px 14px;
  }
  .primary-navigation li.submenu-open > ul { display: grid; }
  .submenu-toggle {
    display: inline-flex;
    position: absolute;
    right: 0;
    top: 6px;
    width: 32px;
    height: 32px;
    align-items: center;
    justify-content: center;
  }
  .site-footer__inner,
  .split-layout,
  .feature-banner,
  .timeline-item,
  .compare-board { grid-template-columns: 1fr; }
  .site-footer__inner { display: grid; }
  .site-footer__meta { justify-items: start; }
  .pibg-default-hero__inner { min-height: 62vh; padding: 128px 0 44px; }
  .pibg-archive-section,
  .page-section { padding: var(--pibg-section-space-mobile) 0; }
  .pibg-card-grid,
  .card-grid { grid-template-columns: 1fr; }
}