/* --------------------------------------------------------------------------
   Architectural portfolio — 水野泰徳
   -------------------------------------------------------------------------- */

:root {
  --bg: #e6e8ea;
  --bg-elevated: #eef0f2;
  --ink: #1a1c1e;
  --ink-muted: #5a6066;
  --line: rgba(26, 28, 30, 0.12);
  --accent: #3a4f5c;
  --accent-soft: rgba(58, 79, 92, 0.14);

  --font-display: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-body: "Zen Kaku Gothic New", "Hiragino Sans", "Hiragino Kaku Gothic ProN", sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.75rem;
  --space-lg: 3.5rem;
  --space-xl: 6rem;
  --space-2xl: 9rem;

  --pad-x: clamp(1.25rem, 4vw, 3.5rem);
  --max: 72rem;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --header-h: 4.25rem;
}

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

html {
  scroll-behavior: smooth;
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 1.0625rem;
  line-height: 1.7;
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.is-nav-open {
  overflow: hidden;
}

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

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

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

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

/* Background atmosphere */
.page-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(120% 80% at 85% 0%, rgba(58, 79, 92, 0.12), transparent 55%),
    radial-gradient(90% 70% at 10% 90%, rgba(26, 28, 30, 0.06), transparent 50%),
    linear-gradient(165deg, #f2f4f5 0%, #e6e8ea 48%, #d5d9dd 100%);
}

.page-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 4.5rem 4.5rem;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.35), transparent 70%);
  opacity: 0.55;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  padding: 0 var(--pad-x);
  background: transparent;
  border-bottom: 1px solid transparent;
  color: #f4f6f5;
  transition:
    border-color 0.4s var(--ease),
    background 0.4s var(--ease),
    color 0.4s var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(238, 240, 242, 0.88);
  backdrop-filter: blur(12px);
  color: var(--ink);
}

.logo {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  transition: opacity 0.3s var(--ease);
}

.logo:hover {
  opacity: 0.55;
}

.nav-toggle {
  display: none;
  position: relative;
  z-index: 120;
  width: 2.75rem;
  height: 2.75rem;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

.nav-toggle__line {
  display: block;
  width: 1.25rem;
  height: 1px;
  margin: 0.35rem auto;
  background: currentColor;
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
}

.nav {
  display: flex;
  gap: clamp(1.25rem, 3vw, 2.25rem);
}

.nav a {
  position: relative;
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: inherit;
  opacity: 0.82;
  transition: opacity 0.3s var(--ease), color 0.3s var(--ease);
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.2em;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}

.nav a:hover {
  opacity: 1;
}

.nav a:hover::after {
  transform: scaleX(1);
}

.site-header.is-scrolled .nav a {
  color: var(--ink-muted);
  opacity: 1;
}

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

.site-header.is-scrolled .nav a::after {
  background: var(--accent);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  padding: calc(var(--header-h) + 2rem) var(--pad-x) clamp(3rem, 8vh, 5.5rem);
  overflow: hidden;
  color: #f4f6f5;
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 82% 42%;
  transform: scale(1.04);
  animation: heroZoom 1.6s var(--ease) forwards;
}

.hero__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      100deg,
      rgba(18, 22, 20, 0.68) 0%,
      rgba(18, 22, 20, 0.38) 34%,
      rgba(18, 22, 20, 0.08) 58%,
      rgba(18, 22, 20, 0.12) 100%
    ),
    linear-gradient(180deg, rgba(18, 22, 20, 0.22) 0%, transparent 32%, rgba(18, 22, 20, 0.28) 100%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.hero__brand {
  display: grid;
  gap: 0.65rem;
  margin-bottom: var(--space-md);
  width: fit-content;
  max-width: 100%;
}

.hero__role {
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(244, 246, 245, 0.78);
}

.hero__name {
  font-family: var(--font-display);
  font-size: clamp(2.35rem, 5.5vw, 3.75rem);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: 0.16em;
  color: #f7f8f7;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid rgba(244, 246, 245, 0.28);
}

.hero__lead {
  max-width: 28rem;
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  font-weight: 300;
  line-height: 1.85;
  color: rgba(244, 246, 245, 0.82);
  margin-bottom: var(--space-lg);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.875rem;
  padding: 0 1.5rem;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1px solid transparent;
  transition:
    background 0.35s var(--ease),
    color 0.35s var(--ease),
    border-color 0.35s var(--ease),
    transform 0.35s var(--ease);
}

.hero .btn--primary {
  background: #f4f6f5;
  color: #1a1c1e;
  border-color: #f4f6f5;
}

.hero .btn--primary:hover {
  background: transparent;
  color: #f4f6f5;
  transform: translateY(-1px);
}

.hero .btn--ghost {
  background: transparent;
  color: #f4f6f5;
  border-color: rgba(244, 246, 245, 0.45);
}

.hero .btn--ghost:hover {
  border-color: #f4f6f5;
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--ink);
  color: var(--bg-elevated);
  border-color: var(--ink);
}

.btn--primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.btn--ghost:hover {
  border-color: var(--ink);
  transform: translateY(-1px);
}

@keyframes heroZoom {
  to {
    transform: scale(1);
  }
}

/* Sections common */
.section {
  padding: var(--space-2xl) var(--pad-x);
  max-width: calc(var(--max) + 2 * var(--pad-x));
  margin: 0 auto;
}

.section__head {
  margin-bottom: var(--space-xl);
  max-width: 36rem;
}

.section__label {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 7vw, 4.5rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-md);
}

.section__desc {
  color: var(--ink-muted);
  font-size: 1rem;
  max-width: 28rem;
}

.section__head--center {
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-xl);
  max-width: none;
  text-align: center;
}

.section__head--center .section__title {
  margin-bottom: var(--space-sm);
  letter-spacing: 0.08em;
}

.section__sub {
  font-size: 0.875rem;
  font-weight: 300;
  letter-spacing: 0.18em;
  color: var(--ink-muted);
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}

.skill {
  display: grid;
  gap: 0.85rem;
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--line);
}

.skill__icon {
  width: 3.25rem;
  height: 3.25rem;
  color: var(--accent);
}

.skill__icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.skill__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.15rem);
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.1;
  color: var(--accent);
}

.skill__text {
  color: var(--ink-muted);
  font-size: 0.95rem;
  line-height: 1.85;
  max-width: 22rem;
}

.skill__label {
  margin-top: 0.35rem;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: lowercase;
  color: var(--accent);
}

.skill__label::before {
  content: "● ";
  font-size: 0.55em;
  vertical-align: middle;
}

.skill__tags {
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  line-height: 1.6;
}

/* Works grid */
.works-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 3vw, 2.5rem);
}

.work-card__link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.work-card__link--static {
  cursor: default;
}

.work-card__visual {
  position: relative;
  aspect-ratio: 16 / 11;
  width: 92%;
  margin: 0 auto 1rem;
  overflow: hidden;
  background:
    linear-gradient(160deg, #dfe3e6 0%, #c5ccd2 100%);
}

.work-card__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.work-card__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  place-items: center;
  background: rgba(238, 240, 242, 0.82);
  opacity: 0;
  transition: opacity 0.45s var(--ease);
}

.work-card__overlay-label {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.8vw, 1.75rem);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink);
  transform: translateY(0.4rem);
  transition: transform 0.45s var(--ease);
}

.work-card__link:focus-visible .work-card__overlay {
  opacity: 1;
}

.work-card__link:focus-visible .work-card__overlay-label {
  transform: translateY(0);
}

@media (hover: hover) and (pointer: fine) {
  .work-card__link:hover .work-card__overlay {
    opacity: 1;
  }

  .work-card__link:hover .work-card__overlay-label {
    transform: translateY(0);
  }
}

.work-card__visual--tone-01 {
  background:
    linear-gradient(145deg, rgba(26, 28, 30, 0.08), transparent 55%),
    linear-gradient(25deg, #c5cbd0, #8a97a1 75%);
}

.work-card__visual--tone-02 {
  background:
    linear-gradient(160deg, transparent 35%, rgba(26, 28, 30, 0.2)),
    linear-gradient(200deg, #aeb6bc, #4f5e68 85%);
}

.work-card__visual--tone-03 {
  background:
    linear-gradient(120deg, rgba(238, 240, 242, 0.4), transparent),
    linear-gradient(340deg, #d2d7db, #6b7c86);
}

.work-card__visual--tone-04 {
  background:
    linear-gradient(90deg, rgba(58, 79, 92, 0.28), transparent 45%),
    linear-gradient(210deg, #bcc4ca, #65727a 90%);
}

.work-card__visual--tone-05 {
  background:
    linear-gradient(30deg, rgba(26, 28, 30, 0.12), transparent 50%),
    linear-gradient(200deg, #c9ced3, #7a868f);
}

.work-card__title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.4vw, 1.65rem);
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.2;
  margin-bottom: 0.35rem;
  transition: color 0.3s var(--ease);
}

.work-card__link:not(.work-card__link--static):hover .work-card__title,
.work-card__link:not(.work-card__link--static):focus-visible .work-card__title {
  color: var(--accent);
}

.work-card__role {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
}

/* About */
.about__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: end;
}

.about__photo {
  margin: 0;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  max-width: 28rem;
}

.about__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  transform: scale(1.04);
  transition: transform 1.2s var(--ease);
}

.reveal-on-scroll.is-visible .about__photo img {
  transform: scale(1);
}

.about__body {
  max-width: 40rem;
  display: grid;
  gap: var(--space-md);
}

.about__lead {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.15rem);
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: 0.02em;
}

.about__text {
  color: var(--ink-muted);
  line-height: 1.9;
}

.about__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
  margin: var(--space-sm) 0 0;
  padding-top: var(--space-md);
  border-top: 1px solid var(--line);
}

@media (min-width: 640px) {
  .about__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.about__facts dt {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.35rem;
}

.about__facts dd {
  margin: 0;
  font-size: 0.95rem;
}

.br-desktop {
  display: none;
}

/* Contact */
.contact {
  padding-bottom: var(--space-xl);
}

.contact__action {
  margin-top: calc(-1 * var(--space-md));
}

.contact__mail {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.5vw, 2.75rem);
  font-weight: 400;
  letter-spacing: 0.02em;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.15em;
  transition:
    color 0.3s var(--ease),
    border-color 0.3s var(--ease);
  word-break: break-all;
}

.contact__mail:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Footer */
.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: var(--space-lg) var(--pad-x);
  border-top: 1px solid var(--line);
  max-width: calc(var(--max) + 2 * var(--pad-x));
  margin: 0 auto;
}

.site-footer__name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.14em;
}

.site-footer__copy {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
}

/* Subpages */
.page-main {
  padding-top: var(--header-h);
}

.page-hero {
  padding: var(--space-xl) var(--pad-x) var(--space-lg);
  max-width: calc(var(--max) + 2 * var(--pad-x));
  margin: 0 auto;
}

.page-hero--center {
  text-align: center;
}

.page-hero__label {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

.page-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 7vw, 4.5rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-sm);
}

.page-hero__sub {
  font-size: 0.875rem;
  font-weight: 300;
  letter-spacing: 0.18em;
  color: var(--ink-muted);
}

.page-hero__lead {
  margin-top: var(--space-md);
  max-width: 36rem;
  color: var(--ink-muted);
  line-height: 1.85;
}

.page-content {
  padding: 0 var(--pad-x) var(--space-2xl);
  max-width: calc(var(--max) + 2 * var(--pad-x));
  margin: 0 auto;
}

.section__action {
  display: flex;
  justify-content: center;
  margin-top: var(--space-xl);
}

.about__action {
  margin-top: var(--space-md);
}

/* Favorite */
.favorite {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--line);
}

.favorite .section__head {
  margin-bottom: var(--space-xl);
}

.favorite-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}

.favorite-item {
  display: grid;
  gap: 0.85rem;
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--line);
}

.favorite-item__icon {
  width: 2.75rem;
  height: 2.75rem;
  color: var(--accent);
}

.favorite-item__icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.favorite-item__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.15rem);
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.1;
  color: var(--accent);
}

.favorite-item__text {
  color: var(--ink-muted);
  font-size: 0.95rem;
  line-height: 1.85;
  max-width: 28rem;
}

/* Picture */
.picture {
  width: 100vw;
  max-width: 100vw;
  margin-top: var(--space-2xl);
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  padding: var(--space-xl) clamp(1.25rem, 4vw, 3rem) 0;
  border-top: 1px solid var(--line);
  box-sizing: border-box;
}

.picture .section__head {
  margin-bottom: var(--space-xl);
  padding-inline: 0;
  max-width: none;
}

.picture-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 1.75rem);
}

.picture-item {
  margin: 0;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: #d7dbe0;
}

.picture-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

/* Career timeline */
.career {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--line);
}

.career .section__head {
  margin-bottom: var(--space-xl);
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 44rem;
}

.timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  padding: 0 0 var(--space-xl) 1.75rem;
  border-left: 1px solid var(--line);
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__item::before {
  content: "";
  position: absolute;
  top: 0.35rem;
  left: -0.28rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--bg);
}

.timeline__date {
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
}

.timeline__body {
  display: grid;
  gap: 0.7rem;
}

.timeline__tag {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.timeline__title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.8vw, 1.75rem);
  font-weight: 500;
  letter-spacing: 0.03em;
  line-height: 1.35;
}

.timeline__text {
  color: var(--ink-muted);
  font-size: 0.95rem;
  line-height: 1.85;
}

.timeline__scope-label {
  margin-top: 0.25rem;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: lowercase;
  color: var(--accent);
}

.timeline__scope-label::before {
  content: "● ";
  font-size: 0.55em;
  vertical-align: middle;
}

.timeline__scope {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink);
  font-size: 0.9rem;
  line-height: 1.8;
}

.timeline__scope li + li {
  margin-top: 0.15rem;
}

/* Project detail */
.project__hero-visual {
  width: min(100%, 48rem);
  margin: 0 auto var(--space-xl);
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #cfd4d8;
}

.project__hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.project__meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--line);
}

.project__meta-item dt {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.35rem;
}

.project__meta-item dd {
  margin: 0;
  font-size: 0.95rem;
}

.project__actions {
  margin: calc(-1 * var(--space-md)) 0 var(--space-xl);
}

.project__body {
  display: grid;
  gap: var(--space-lg);
  max-width: 40rem;
}

.project__body h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 500;
  letter-spacing: 0.03em;
  margin-bottom: var(--space-sm);
}

.project__body p {
  color: var(--ink-muted);
  line-height: 1.9;
}

.design-section {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--line);
}

.design-section .section__head {
  margin-bottom: var(--space-xl);
}

.design-comps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: start;
  justify-content: center;
}

.design-comps__item {
  margin: 0;
  display: grid;
  gap: 0.75rem;
  justify-items: center;
}

.design-comps__item img {
  width: 100%;
  height: auto;
  display: block;
  background: #f3f4f5;
}

.design-comps__item--pc {
  max-width: 36rem;
  margin-inline: auto;
}

.design-comps__item--sp {
  max-width: 14rem;
  margin-inline: auto;
}

.design-comps__item figcaption {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.app-shots {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md) var(--space-lg);
}

.app-shots__item {
  margin: 0;
  display: grid;
  gap: 0.65rem;
}

.app-shots__item img {
  width: 100%;
  height: auto;
  display: block;
  background: #f3f4f5;
  border: 1px solid var(--line);
}

.app-shots__item figcaption {
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
}

.project__demo {
  display: grid;
  gap: 0.75rem;
  margin: var(--space-md) 0 0;
  padding: 0;
  max-width: 28rem;
}

.project__demo dt {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.project__demo dd {
  margin: 0.15rem 0 0;
  font-size: 0.9375rem;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  color: var(--ink);
}

.project__body ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
  color: var(--ink-muted);
  line-height: 1.7;
}

.project__body ul li {
  padding-left: 1rem;
  position: relative;
}

.project__body ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 0.35rem;
  height: 1px;
  background: var(--ink-muted);
}

.project__body .stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--ink);
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
}

.project__body .stack li {
  padding-left: 0;
}

.project__body .stack li::before {
  display: none;
}

.project__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--line);
}

/* Motion: hero entrance */
.reveal {
  opacity: 0;
  transform: translateY(1.25rem);
  animation: rise 0.95s var(--ease) forwards;
}

.reveal--delay-1 {
  animation-delay: 0.12s;
}

.reveal--delay-2 {
  animation-delay: 0.24s;
}

.reveal--delay-3 {
  animation-delay: 0.36s;
}

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

/* Motion: scroll reveal */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(2rem);
  transition:
    opacity 0.9s var(--ease),
    transform 0.9s var(--ease);
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.design-section.reveal-on-scroll {
  opacity: 1;
  transform: none;
}

/* Responsive */
@media (min-width: 640px) {
  .works-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(1.75rem, 3vw, 2.75rem) clamp(1.25rem, 2.5vw, 2rem);
  }

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

@media (min-width: 768px) {
  .br-desktop {
    display: inline;
  }

  .project__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-lg);
  }

  .design-comps {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.55fr);
    gap: clamp(1.5rem, 3vw, 2.5rem);
    max-width: 48rem;
    margin-inline: auto;
  }

  .design-comps__item--pc,
  .design-comps__item--sp {
    max-width: none;
    margin-inline: 0;
  }

  .timeline__item {
    grid-template-columns: 9.5rem minmax(0, 1fr);
    gap: var(--space-md);
    padding-left: 2rem;
  }

  .timeline__item::before {
    left: -0.28rem;
  }

  .timeline__date {
    padding-top: 0.1rem;
  }

  .skills-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: none;
    gap: 0;
  }

  .favorite-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: none;
    gap: 0;
  }

  .favorite-item {
    padding: var(--space-md) var(--space-md) var(--space-lg);
    border-bottom: none;
    border-left: 1px solid var(--line);
  }

  .favorite-item:first-child {
    border-left: none;
    padding-left: 0;
  }

  .favorite-item:last-child {
    padding-right: 0;
  }

  .skill {
    padding: var(--space-md) var(--space-md) var(--space-lg);
    border-bottom: none;
    border-left: 1px solid var(--line);
  }

  .skill:first-child {
    border-left: none;
    padding-left: 0;
  }

  .skill:last-child {
    padding-right: 0;
  }

  .about__layout {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: var(--space-xl);
  }

  .about__photo {
    max-width: none;
  }
}

@media (min-width: 900px) {
  .picture-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(1.25rem, 2.5vw, 2rem);
  }
}

@media (min-width: 1024px) {
  .works-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .skill {
    padding: var(--space-md) var(--space-lg) var(--space-lg);
  }

  .hero__img {
    object-position: 80% 40%;
  }
}

@media (max-width: 767px) {
  :root {
    --space-xl: 4rem;
    --space-2xl: 5.5rem;
    --header-h: 3.75rem;
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }

  .site-header.is-open .nav-toggle__line:first-child {
    transform: translateY(0.4rem) rotate(45deg);
  }

  .site-header.is-open .nav-toggle__line:last-child {
    transform: translateY(-0.4rem) rotate(-45deg);
  }

  .nav {
    position: fixed;
    inset: 0;
    z-index: 110;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 1.5rem;
    padding: var(--pad-x);
    background: rgba(238, 240, 242, 0.97);
    color: var(--ink);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.35s var(--ease), visibility 0.35s var(--ease);
  }

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

  .nav a {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 7.5vw, 2.25rem);
    letter-spacing: 0.08em;
    text-transform: none;
    opacity: 1;
    color: var(--ink);
  }

  .site-header.is-open,
  .site-header.is-open.is-scrolled {
    color: var(--ink);
    background: transparent;
    border-bottom-color: transparent;
  }

  .hero {
    min-height: 100svh;
    padding-bottom: clamp(2rem, 6vh, 3.5rem);
  }

  .hero__role {
    font-size: 0.65rem;
    letter-spacing: 0.22em;
  }

  .hero__name {
    font-size: clamp(1.85rem, 9vw, 2.5rem);
    letter-spacing: 0.1em;
  }

  .hero__lead {
    max-width: 22rem;
    font-size: 0.95rem;
    line-height: 1.8;
  }

  .btn {
    min-height: 2.65rem;
    font-size: 0.75rem;
  }

  .section__label,
  .page-hero__label {
    font-size: 0.68rem;
  }

  .section__title,
  .page-hero__title {
    font-size: clamp(2.1rem, 10vw, 2.85rem);
    letter-spacing: 0.04em;
  }

  .section__sub,
  .page-hero__sub {
    font-size: 0.8rem;
  }

  .section__desc,
  .page-hero__lead {
    font-size: 0.95rem;
  }

  .skill__title,
  .favorite-item__title {
    font-size: clamp(1.45rem, 6vw, 1.85rem);
  }

  .skill__text,
  .favorite-item__text,
  .about__text,
  .timeline__text {
    font-size: 0.9rem;
  }

  .work-card__title {
    font-size: clamp(1.2rem, 5vw, 1.45rem);
  }

  .work-card__role {
    font-size: 0.7rem;
  }

  .work-card__overlay-label {
    font-size: clamp(1.15rem, 5vw, 1.45rem);
  }

  .about__lead {
    font-size: clamp(1.25rem, 5.5vw, 1.65rem);
  }

  .timeline__title {
    font-size: clamp(1.2rem, 5vw, 1.5rem);
  }

  .project__body h2 {
    font-size: clamp(1.45rem, 6vw, 1.85rem);
  }

  .hero__cta {
    width: 100%;
  }

  .hero__cta .btn {
    flex: 1 1 auto;
  }

  .section,
  .page-hero,
  .page-content {
    padding-left: var(--pad-x);
    padding-right: var(--pad-x);
  }

  .work-card__visual {
    width: 100%;
  }

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

  .about__photo {
    max-width: 22rem;
  }

  .contact__mail {
    font-size: clamp(1.15rem, 6.5vw, 1.65rem);
  }

  .project__hero-visual {
    width: 100%;
  }

  .project__nav,
  .project__actions {
    flex-direction: column;
  }

  .project__nav .btn,
  .project__actions .btn {
    width: 100%;
  }

  .design-comps__item--sp {
    max-width: 11rem;
  }

  .app-shots {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-footer__name {
    font-size: 1rem;
  }

  .hero__img {
    object-position: 88% 40%;
  }

  .hero__veil {
    background:
      linear-gradient(
        180deg,
        rgba(18, 22, 20, 0.35) 0%,
        rgba(18, 22, 20, 0.25) 40%,
        rgba(18, 22, 20, 0.62) 100%
      );
  }
}

@media (max-width: 480px) {
  body {
    font-size: 0.9375rem;
  }

  .logo {
    font-size: 0.95rem;
    letter-spacing: 0.1em;
  }

  .hero__name {
    font-size: 1.75rem;
  }

  .section__title,
  .page-hero__title {
    font-size: 2rem;
  }

  .nav a {
    font-size: 1.55rem;
  }

  .picture {
    padding-left: 0.85rem;
    padding-right: 0.85rem;
  }

  .picture-grid {
    gap: 0.65rem;
  }
}