/* Version 2 — Swiss / International Typographic Style */

:root {
  --bg: #f2f2f2;
  --bg-soft: #eaeaea;
  --ink: #0a0a0a;
  --muted: #8a8a8a;
  --line: #d4d4d4;
  --white: #ffffff;
  --pad: clamp(1.25rem, 3.5vw, 3rem);
  --max: 1400px;
  --font: "Instrument Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 0.55s;
}

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

html {
  scroll-behavior: auto;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
p {
  margin: 0;
}

/* ——— Header ——— */

.site-header {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.35rem var(--pad);
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
}

.site-logo {
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  justify-self: start;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.15rem 0.35rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.site-nav a {
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: var(--ink);
}

.nav-sep {
  color: var(--muted);
}

.site-header__right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
}

.site-cta {
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 0.28em;
  text-decoration-thickness: 1px;
}

.site-cta:hover {
  opacity: 0.55;
}

.lang {
  display: inline-flex;
  gap: 0.35rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
}

.lang__btn {
  color: var(--muted);
  transition: color 0.2s ease;
}

.lang__btn.is-active,
.lang__btn:hover {
  color: var(--ink);
}

.menu-btn {
  display: none;
  width: 28px;
  height: 18px;
  position: relative;
}

.menu-btn span {
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.25s var(--ease), top 0.25s var(--ease);
}

.menu-btn span:first-child {
  top: 4px;
}

.menu-btn span:last-child {
  top: 12px;
}

.menu-btn[aria-expanded="true"] span:first-child {
  top: 8px;
  transform: rotate(45deg);
}

.menu-btn[aria-expanded="true"] span:last-child {
  top: 8px;
  transform: rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 35;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--pad);
  gap: 0.35rem;
  font-size: clamp(1.75rem, 6vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity 0.45s var(--ease-out),
    visibility 0.45s;
}

.mobile-nav.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mobile-nav a {
  display: block;
  padding: 0.45rem 0;
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.55s var(--ease-out),
    transform 0.65s cubic-bezier(0.76, 0, 0.24, 1),
    color 0.25s ease;
}

.mobile-nav.is-open a {
  opacity: 1;
  transform: none;
}

.mobile-nav.is-open a:nth-child(1) { transition-delay: 0.08s; }
.mobile-nav.is-open a:nth-child(2) { transition-delay: 0.14s; }
.mobile-nav.is-open a:nth-child(3) { transition-delay: 0.2s; }
.mobile-nav.is-open a:nth-child(4) { transition-delay: 0.26s; }

.mobile-nav:not(.is-open) a {
  transition-delay: 0s;
  transition-duration: 0.25s;
}

.mobile-nav a:hover {
  color: var(--muted);
}

/* ——— Hero ——— */

.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(2.5rem, 8vh, 5.5rem) var(--pad) clamp(3rem, 10vh, 7rem);
  display: grid;
  grid-template-columns: 1fr minmax(0, 28rem);
}

.hero__lead {
  grid-column: 2;
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  line-height: 1.55;
  letter-spacing: -0.015em;
  max-width: 28rem;
  opacity: 0;
  transform: translateY(18px);
  animation: rise 1.1s var(--ease-out) 0.12s forwards;
}

.hero__lead .accent {
  font-weight: 600;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: none;
  }
}

/* ——— Featured ——— */

.featured {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad) 1rem;
}

.featured__link {
  display: block;
}

.featured__meta {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 1rem;
  padding: 0.75rem 0;
  font-size: 0.8125rem;
}

.featured__num {
  font-family: var(--mono);
  color: var(--muted);
}

.featured__name {
  font-weight: 600;
  text-align: center;
  letter-spacing: -0.02em;
}

.featured__type {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--muted);
  transition: color 0.2s ease;
}

.featured__link:hover .featured__type {
  color: var(--ink);
}

.arrow {
  font-size: 0.9em;
}

.featured__visual {
  overflow: hidden;
  background: var(--bg-soft);
  aspect-ratio: 16 / 9;
}

.featured__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 1.1s var(--ease);
}

.featured__link:hover .featured__visual img {
  transform: scale(1.06);
}

.featured__rail {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0 0;
  font-size: 0.75rem;
  color: var(--muted);
}

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

.featured__scroll {
  font-family: var(--mono);
}

/* ——— Project index (Populous-style) ——— */

.index {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(4rem, 10vh, 7rem) var(--pad) clamp(3rem, 8vh, 5rem);
}

.index__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-bottom: 2.5rem;
}

.index__title {
  font-size: clamp(2.25rem, 5.5vw, 4.25rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1;
}

.index__count {
  font-size: 0.35em;
  font-weight: 500;
  font-family: var(--mono);
  color: var(--muted);
  vertical-align: super;
  margin-left: 0.25rem;
}

.index__sub {
  max-width: 18rem;
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.45;
}

.index__cols {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) 5rem;
  gap: 1rem;
  padding: 0 0.75rem 0.65rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.index__list {
  border-bottom: 1px solid var(--line);
}

.index__row {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) 5rem;
  gap: 1rem;
  align-items: center;
  padding: 1.05rem 0.75rem;
  border-top: 1px solid var(--line);
  transition: background 0.4s var(--ease-out);
}

.index__row:hover,
.index__row:focus-visible {
  background: var(--bg-soft);
  outline: none;
}

.index__row-name {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  min-width: 0;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.index__row-num {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--muted);
  flex-shrink: 0;
}

.index__dot {
  width: 8px;
  height: 8px;
  border-radius: 1px;
  flex-shrink: 0;
}

.index__row-type {
  font-size: 0.875rem;
  color: var(--muted);
}

.index__row-year {
  font-family: var(--mono);
  font-size: 0.8rem;
  text-align: right;
}

.index__preview {
  position: fixed;
  left: 0;
  top: 0;
  width: min(340px, 38vw);
  aspect-ratio: 4 / 3;
  pointer-events: none;
  z-index: 50;
  opacity: 0;
  visibility: hidden;
  will-change: transform, opacity;
  transition: opacity 0.2s ease, visibility 0.2s;
}

.index__preview.is-visible {
  opacity: 1;
  visibility: visible;
}

.index__preview-inner {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.14);
  transform: scale(0);
  transform-origin: center center;
  transition: transform 0.45s cubic-bezier(0.76, 0, 0.24, 1);
  will-change: transform;
}

.index__preview.is-visible .index__preview-inner {
  transform: scale(1);
}

.index__preview.is-leaving .index__preview-inner {
  transform: scale(0);
  transition: transform 0.32s cubic-bezier(0.32, 0, 0.67, 0);
}

.index__preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.08);
  transition: transform 0.7s cubic-bezier(0.76, 0, 0.24, 1);
}

.index__preview.is-visible img {
  transform: scale(1);
}

.index__preview.is-empty .index__preview-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-soft);
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  padding: 1rem;
  text-align: center;
}

.index__preview-fallback {
  padding: 0.5rem;
}

/* ——— Expertise ——— */

.expertise {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3.5rem, 9vh, 6.5rem) var(--pad);
  display: grid;
  grid-template-columns: minmax(7rem, 0.32fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  border-top: 1px solid var(--line);
  min-height: 70vh;
}

.expertise__rail {
  position: relative;
  display: flex;
  align-items: flex-start;
}

.expertise__glyph {
  position: sticky;
  top: 28vh;
  display: block;
  font-size: clamp(5.5rem, 14vw, 11rem);
  font-weight: 700;
  letter-spacing: -0.08em;
  line-height: 0.85;
  color: var(--ink);
  transition: opacity 0.45s var(--ease), transform 0.55s var(--ease);
  will-change: opacity, transform;
}

.expertise__glyph.is-swap {
  opacity: 0;
  transform: translateY(18px);
}

.expertise__main {
  min-width: 0;
  padding-top: 0.35rem;
}

.expertise__label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.75rem;
}

.expertise__list {
  border-top: 1px solid var(--line);
}

.expertise__item {
  border-bottom: 1px solid var(--line);
}

.expertise__trigger {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(9rem, 0.9fr) minmax(0, 1.3fr) auto;
  gap: 1rem 1.75rem;
  align-items: start;
  padding: 1.35rem 0.15rem;
  text-align: left;
  transition: background 0.4s var(--ease);
}

.expertise__item.is-open .expertise__trigger,
.expertise__trigger:hover {
  background: transparent;
}

.expertise__name {
  font-size: clamp(1.35rem, 2.8vw, 2.15rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  text-transform: uppercase;
  transition: color 0.35s var(--ease);
}

.expertise__item:not(.is-open) .expertise__name {
  color: color-mix(in srgb, var(--ink) 72%, var(--muted));
}

.expertise__copy {
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--muted);
  max-width: 28rem;
  opacity: 0.55;
  transform: translateY(4px);
  transition: opacity 0.45s var(--ease), transform 0.45s var(--ease), color 0.35s ease;
}

.expertise__item.is-open .expertise__copy,
.expertise__item:hover .expertise__copy {
  opacity: 1;
  transform: none;
  color: var(--ink);
}

.expertise__frac {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  padding-top: 0.35rem;
  white-space: nowrap;
}

.expertise__subs {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  margin: 0;
  padding: 0;
  transition:
    max-height 0.55s var(--ease),
    opacity 0.4s ease,
    margin 0.4s var(--ease);
}

.expertise__item.is-open .expertise__subs {
  max-height: 16rem;
  opacity: 1;
  margin-top: 0.15rem;
  margin-bottom: 1.1rem;
}

.expertise__subs li {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 0.7rem 0;
  border-top: 1px solid var(--line);
  max-width: 22rem;
  transform: translateY(6px);
  opacity: 0;
  transition:
    opacity 0.4s var(--ease),
    transform 0.45s var(--ease),
    color 0.25s ease;
}

.expertise__item.is-open .expertise__subs li {
  opacity: 1;
  transform: none;
}

.expertise__item.is-open .expertise__subs li:nth-child(1) { transition-delay: 0.05s; }
.expertise__item.is-open .expertise__subs li:nth-child(2) { transition-delay: 0.1s; }
.expertise__item.is-open .expertise__subs li:nth-child(3) { transition-delay: 0.15s; }
.expertise__item.is-open .expertise__subs li:nth-child(4) { transition-delay: 0.2s; }

.expertise__subs li:hover {
  color: var(--ink);
}

/* ——— About ——— */

.about {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3rem, 8vh, 5.5rem) var(--pad);
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 2rem 4rem;
  border-top: 1px solid var(--line);
}

.about__title {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
}

.about__body {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  max-width: 36rem;
  font-size: 1rem;
  line-height: 1.6;
}

.about__now {
  margin-top: 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.about__now h3 {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.85rem;
}

.about__now li {
  position: relative;
  padding-left: 1rem;
  margin-bottom: 0.45rem;
  font-size: 0.95rem;
  color: var(--ink);
}

.about__now li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--muted);
}

.about__cv-wrap {
  position: relative;
  width: fit-content;
  margin-top: 0.5rem;
}

.about__cv {
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 0.28em;
  display: inline-block;
  transition: opacity 0.25s ease;
}

.about__cv:hover,
.about__cv-wrap.is-loading .about__cv {
  opacity: 0.55;
}

.cv-loader {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 1.5px;
  background: var(--line);
  overflow: hidden;
  opacity: 0;
  transform: scaleX(0.96);
  transform-origin: left center;
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
}

.about__cv-wrap.is-loading .cv-loader {
  opacity: 1;
  transform: none;
}

.cv-loader__bar {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left center;
}

.about__cv-wrap.is-loading .cv-loader__bar {
  animation: cv-load 1.2s linear forwards;
}

@keyframes cv-load {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.cv-preview {
  position: absolute;
  left: 0;
  bottom: calc(100% + 0.85rem);
  width: min(280px, 72vw);
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px) scale(0.96);
  pointer-events: none;
  z-index: 40;
  transition:
    opacity 0.35s var(--ease-out),
    transform 0.4s cubic-bezier(0.76, 0, 0.24, 1),
    visibility 0.35s;
}

.cv-preview.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
  pointer-events: auto;
}

.cv-preview__frame {
  aspect-ratio: 1 / 1.35;
  overflow: hidden;
  background: var(--bg-soft);
}

.cv-preview__frame iframe {
  width: 140%;
  height: 140%;
  border: 0;
  transform: scale(0.72);
  transform-origin: top left;
  pointer-events: none;
}

/* ——— Footer ——— */

.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3rem, 8vh, 5rem) var(--pad) 2rem;
  border-top: 1px solid var(--line);
}

.site-footer__intro {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-bottom: 3rem;
}

.site-footer__tagline {
  font-size: clamp(1.5rem, 3.5vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.15;
  max-width: 18ch;
}

.site-footer__cta {
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 0.28em;
}

.site-footer__cta:hover {
  opacity: 0.55;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2rem;
  margin-bottom: 3.5rem;
  font-size: 0.9rem;
}

.site-footer__label {
  display: block;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.55rem;
}

.site-footer__socials {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.1rem;
}

.site-footer__socials a:hover,
.site-footer__grid a:hover {
  opacity: 0.55;
}

.site-footer__bottom {
  overflow: hidden;
  border-top: 1px solid var(--line);
  padding-top: clamp(2.5rem, 5vw, 4rem);
  width: 100%;
}

.site-footer__name {
  display: block;
  width: 100%;
  font-size: clamp(2.5rem, 12vw, 9.5rem);
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 0.85;
  white-space: nowrap;
  color: var(--ink);
  margin: 0;
}

/* ——— Detail page ——— */

.detail {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem var(--pad) 4rem;
}

.detail__back {
  display: inline-block;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
  color: var(--muted);
  transition: color 0.2s ease;
}

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

.detail__stage {
  position: relative;
  overflow: hidden;
  background: var(--bg-soft);
  aspect-ratio: 16 / 9;
  margin-bottom: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.detail__stage img.detail__stage-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.detail__stage-logo {
  position: relative;
  z-index: 1;
  width: min(120px, 18vw);
  height: auto;
  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.2));
}

.detail__stage-logo--bolt {
  width: min(140px, 22vw);
}

.detail__stage-logo--fether {
  width: min(130px, 20vw);
}

.detail__stage-logo--pixel {
  width: min(280px, 50vw);
}

.detail__stage-word {
  position: relative;
  z-index: 1;
  font-size: clamp(1.5rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  text-align: center;
  line-height: 1.15;
  color: var(--ink);
}

.detail__stage--agent,
.detail__stage--gitfora,
.detail__stage--more,
.detail__stage--pixel {
  background:
    linear-gradient(145deg, #ececec 0%, #d8d8d8 100%);
}

.detail__stage--more .detail__stage-logo {
  width: 48px;
  margin-bottom: 0.75rem;
}

.detail__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 2.5rem 4rem;
  margin-bottom: 4rem;
}

.detail__tag {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

.detail__title {
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.95;
  margin-bottom: 1.25rem;
}

.detail__lead {
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--muted);
  max-width: 32rem;
  margin-bottom: 1.5rem;
}

.detail__cta {
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 0.28em;
}

.detail__cta:hover {
  opacity: 0.55;
}

.detail__facts {
  margin-bottom: 2rem;
}

.detail__fact {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
}

.detail__fact:first-child {
  border-top: 1px solid var(--line);
}

.detail__fact span {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 0.2rem;
}

.detail__fact strong {
  font-weight: 500;
}

.detail__copy h2 {
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  margin-bottom: 0.85rem;
}

.detail__copy p {
  font-size: 0.98rem;
  line-height: 1.65;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.detail__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.detail__tags li {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--line);
  color: var(--muted);
}

.detail__others {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.detail__others .index__head {
  margin-bottom: 1.5rem;
}

.detail__others .index__title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
}

/* ——— Reveal ——— */

.observe {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 1s var(--ease-out),
    transform 1s var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}

.observe.in-view {
  opacity: 1;
  transform: none;
}

.observe-stagger > *:nth-child(1) { --reveal-delay: 0ms; }
.observe-stagger > *:nth-child(2) { --reveal-delay: 70ms; }
.observe-stagger > *:nth-child(3) { --reveal-delay: 140ms; }
.observe-stagger > *:nth-child(4) { --reveal-delay: 210ms; }
.observe-stagger > *:nth-child(5) { --reveal-delay: 280ms; }
.observe-stagger > *:nth-child(6) { --reveal-delay: 350ms; }
.observe-stagger > *:nth-child(7) { --reveal-delay: 420ms; }

/* Heading split animation */
.heading-anim {
  overflow: hidden;
}

.heading-anim .char {
  display: inline-block;
  opacity: 0;
  transform: translateY(110%);
  transition:
    opacity 0.7s var(--ease-out),
    transform 0.85s var(--ease-out);
  transition-delay: calc(var(--char-i, 0) * 28ms + var(--reveal-delay, 0ms));
}

.heading-anim.is-in .char {
  opacity: 1;
  transform: none;
}

.heading-anim .char-space {
  width: 0.28em;
}

/* ——— Responsive ——— */

@media (max-width: 960px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .site-nav {
    display: none;
  }

  .menu-btn {
    display: block;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-bottom: 3rem;
  }

  .hero__lead {
    grid-column: 1;
    max-width: 34rem;
  }

  .featured__meta {
    grid-template-columns: auto 1fr;
    gap: 0.35rem 1rem;
  }

  .featured__name {
    text-align: left;
  }

  .featured__type {
    grid-column: 1 / -1;
  }

  .index__cols,
  .index__row {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) 3.5rem;
  }

  .expertise {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    min-height: 0;
  }

  .expertise__rail {
    display: none;
  }

  .expertise__trigger {
    grid-template-columns: 1fr auto;
    gap: 0.75rem 1rem;
  }

  .expertise__copy {
    grid-column: 1 / -1;
    opacity: 1;
    transform: none;
  }

  .expertise__frac {
    padding-top: 0.2rem;
  }

  .about {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .detail__layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .index__preview {
    width: min(260px, 42vw);
  }
}

@media (max-width: 640px) {
  .site-cta {
    display: none;
  }

  .featured__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .index__cols {
    display: none;
  }

  .index__row {
    grid-template-columns: 1fr auto;
    gap: 0.35rem 1rem;
    padding-right: 0.75rem;
  }

  .index__row-type {
    grid-column: 1;
    font-size: 0.8rem;
  }

  .index__row-year {
    grid-row: 1;
    grid-column: 2;
  }

  .detail__fact {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .index__preview {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .hero__lead,
  .observe {
    opacity: 1;
    transform: none;
  }
}