:root {
  color-scheme: dark;
  font-family: 'Noto Sans JP', 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: #f5f1eb;
  background: #101017;
  --bg: #14131d;
  --surface: #1d1b28;
  --surface-strong: #23212d;
  --surface-soft: #292735;
  --text: #f5f1eb;
  --muted: #b8b2a4;
  --border: rgba(255, 255, 255, 0.08);
  --accent: #c8a165;
  --accent-soft: rgba(200, 161, 101, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, rgba(200, 161, 101, 0.08), transparent 28%), #101017;
  color: var(--text);
  overflow-x: hidden;
}

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

img {
  max-width: 100%;
}

button,
input,
textarea {
  outline: none;
}

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(16, 14, 23, 0.92);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 22px 0;
}

.logo {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.24em;
  font-size: 0.96rem;
}

.nav {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100vh;
  padding: clamp(120px, 20vh, 170px) clamp(34px, 11vw, 120px) 48px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: clamp(22px, 4vh, 38px);
  background: rgba(16, 14, 23, 0.94);
  backdrop-filter: blur(18px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-24px);
  transition: opacity 0.35s ease, transform 0.35s ease, visibility 0.35s ease;
  z-index: 70;
  overflow: hidden;
}

.nav.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: clamp(1.65rem, 5vw, 3.2rem);
  line-height: 1;
  letter-spacing: 0.04em;
  text-align: right;
  transition: color 0.2s ease, transform 0.2s ease;
}

.nav a:hover {
  color: var(--accent);
  transform: translateX(-10px);
}

.nav::before {
  content: "yuga";
  position: absolute;
  left: -0.08em;
  bottom: 0.02em;
  z-index: -1;
  color: rgba(255, 255, 255, 0.035);
  font-size: clamp(6rem, 26vw, 18rem);
  font-weight: 800;
  line-height: 0.75;
}

.nav-toggle {
  display: flex;
  position: fixed;
  top: 28px;
  right: clamp(16px, 5vw, 84px);
  z-index: 90;
  width: 64px;
  height: 64px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 10px;
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.18);
  transition: background-color 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
}

.nav-toggle:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.16);
}

.nav-toggle span {
  display: block;
  position: absolute;
  left: 50%;
  top: 50%;
  width: 30px;
  height: 3px;
  background: #f6f2ea;
  border-radius: 999px;
  transform: translate(-50%, -50%);
  transform-origin: center;
  transition: transform 0.3s ease, opacity 0.3s ease, background-color 0.25s ease;
}

.nav-toggle span:nth-child(1) {
  transform: translate(-50%, calc(-50% - 10px));
}

.nav-toggle span:nth-child(3) {
  transform: translate(-50%, calc(-50% + 10px));
}

.nav-toggle.open {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.28);
}

.nav-toggle.open span:nth-child(1) {
  transform: translate(-50%, -50%) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.nav-toggle.open span {
  background: #f6f2ea;
}

.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: 72px 0 90px;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero__panel {
  max-width: 620px;
}

.hero__panel .eyebrow,
.section__label {
  display: inline-flex;
  margin-bottom: 20px;
  color: var(--accent);
  font-size: 0.88rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  padding-bottom: 12px;
  border-bottom: 2px solid rgba(200, 161, 101, 0.26);
}

h1 {
  margin: 0;
  font-size: clamp(3rem, 8vw, 5.2rem);
  line-height: 0.92;
  letter-spacing: -0.06em;
  color: #f6f2ea;
}

.hero__lead {
  margin: 32px 0 24px;
  color: var(--text);
  font-size: 1.18rem;
  max-width: 520px;
}

.hero__description {
  margin: 0 0 34px;
  color: var(--muted);
  max-width: 520px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero__photo {
  position: relative;
  border-radius: 32px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(200, 161, 101, 0.18), rgba(15, 14, 22, 0.95));
  min-height: 540px;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero__photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4/5;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 24px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  text-align: center;
  white-space: normal;
  transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

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

.button--ghost {
  border: 2px solid rgba(200, 161, 101, 0.95);
  color: var(--accent);
  background: rgba(200, 161, 101, 0.08);
}

.button--ghost:hover {
  background: rgba(200, 161, 101, 0.18);
}

.button--outline {
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.button--outline:hover {
  background: rgba(255, 255, 255, 0.12);
}

.section {
  padding: 100px 0;
}

.section--about,
.section--skills {
  background: #14131d;
  color: var(--text);
}

.section--works {
  background: rgba(255, 255, 255, 0.03);
}

.section--blog {
  background: #14131d;
}

.section--contact {
  background: rgba(255, 255, 255, 0.04);
}

.section__header {
  margin-bottom: 48px;
}

.section__header--wide {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 3.5vw, 3.2rem);
  color: #f6f2ea;
}

.about__inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.about__text p {
  margin: 0 0 24px;
  max-width: 640px;
  color: var(--muted);
}

.hero__lead,
.hero__description,
.about__text p,
.about-hero__lead,
.about-detail__intro p,
.career-item p,
.detail-panel p,
.blog-card p,
.contact__card p,
.contact-list li {
  overflow-wrap: anywhere;
}

.about__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.about__list li {
  color: var(--muted);
}

.about__button {
  margin-top: 28px;
}

.about__visual {
  min-height: 360px;
  border-radius: 32px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(180deg, rgba(16, 14, 23, 0.08), rgba(16, 14, 23, 0.2)),
    url("img/about-workspace.png") center / cover;
}

.about__visual-box {
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top left, rgba(255, 255, 255, 0.15), transparent 35%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0));
}

.about-hero {
  min-height: 82vh;
  display: flex;
  align-items: center;
  padding: 90px 0 80px;
  background: #101017;
}

.about-hero__inner {
  display: grid;
  grid-template-columns: 1fr 0.72fr;
  gap: 56px;
  align-items: center;
}

.about-hero__lead {
  max-width: 680px;
  margin: 32px 0 0;
  color: var(--muted);
  font-size: 1.12rem;
}

.about-hero__photo {
  min-height: 440px;
  overflow: hidden;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.32);
}

.about-hero__photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4/5;
}

.section--about-detail {
  background: #14131d;
}

.about-detail {
  display: grid;
  gap: 56px;
}

.about-detail__intro {
  max-width: 760px;
}

.about-detail__intro p,
.detail-panel p,
.career-item p {
  color: var(--muted);
}

.career-list {
  display: grid;
  gap: 18px;
}

.career-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 28px;
  padding: 28px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.career-item:last-child {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.career-item__year {
  margin: 0;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.career-item h3,
.detail-panel h2 {
  margin: 0 0 12px;
  color: var(--text);
}

.career-item p {
  margin: 0;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.detail-panel {
  padding: 34px;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
}

.about-detail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.works-showcase {
  position: relative;
  overflow: hidden;
  padding: 10px 0 22px;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.works-track {
  display: flex;
  width: max-content;
  gap: 24px;
  animation: works-slide 28s linear infinite;
}

.works-showcase:hover .works-track {
  animation-play-state: paused;
}

.work-card {
  display: block;
  width: min(280px, 72vw);
  flex: 0 0 auto;
  overflow: hidden;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 24px 40px rgba(0, 0, 0, 0.18);
  animation: work-float 5.5s ease-in-out infinite;
}

.work-card:nth-child(2n) {
  animation-delay: -1.4s;
}

.work-card:nth-child(3n) {
  animation-delay: -2.8s;
}

.work-card:hover {
  border-color: rgba(200, 161, 101, 0.4);
  transform: translateY(-8px);
  box-shadow: 0 32px 58px rgba(0, 0, 0, 0.28);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.blog-card {
  overflow: hidden;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: border-color 0.2s ease, transform 0.2s ease;
  box-shadow: 0 24px 40px rgba(0, 0, 0, 0.16);
}

.blog-card:hover {
  border-color: rgba(200, 161, 101, 0.4);
  transform: translateY(-4px);
}

.blog-card__image {
  display: block;
  width: 100%;
  overflow: hidden;
}

.blog-card__image img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.blog-card {
  padding: 28px 28px 32px;
}

.blog-card h3 {
  margin: 24px 0 14px;
  color: var(--text);
}

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

.work-card__thumb {
  min-height: 180px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  background-position: center;
  background-size: cover;
}

.work-card__thumb--apareru {
  background-image:
    linear-gradient(180deg, rgba(16, 14, 23, 0.08), rgba(16, 14, 23, 0.34)),
    url("works/apareru/img/item3.jpg");
}

.work-card__thumb--joukyu {
  background-image:
    linear-gradient(180deg, rgba(16, 14, 23, 0.08), rgba(16, 14, 23, 0.34)),
    url("works/joukyu/img/main/main5.jpg");
}

.work-card__thumb--apple {
  background-image:
    linear-gradient(180deg, rgba(16, 14, 23, 0.08), rgba(16, 14, 23, 0.34)),
    url("works/apple-site/img/iPhone 12.jpg");
}

.work-card__body {
  padding: 24px;
}

.work-card__title {
  margin: 0 0 10px;
  color: var(--text);
  font-weight: 700;
}

.work-card__meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.work-card__description {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

@keyframes works-slide {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(calc(-50% - 12px));
  }
}

@keyframes work-float {
  0%,
  100% {
    translate: 0 0;
  }

  50% {
    translate: 0 -8px;
  }
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
}

.skill-chip {
  padding: 26px 24px;
  background: rgba(200, 161, 101, 0.08);
  color: #f5f1eb;
  border: 1px solid rgba(200, 161, 101, 0.18);
  border-radius: 24px;
  font-weight: 700;
  text-align: center;
  transition: background-color 0.2s ease;
}

.skill-chip:hover {
  background: rgba(200, 161, 101, 0.16);
}

.contact__inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 42px;
  align-items: center;
}

.contact__card {
  padding: 48px;
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.14);
}

.contact__card h2 {
  color: var(--text);
}

.contact__card p {
  color: var(--muted);
  max-width: 520px;
  margin: 24px 0 28px;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  display: grid;
  gap: 12px;
}

.contact-list li {
  color: var(--muted);
}

.contact__visual {
  min-height: 420px;
  border-radius: 32px;
  background:
    linear-gradient(180deg, rgba(16, 14, 23, 0.12), rgba(16, 14, 23, 0.48)),
    url("img/contact-workspace.png") center / cover;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.2);
}

.footer {
  padding: 28px 0 40px;
  background: #14131d;
}

.footer__inner {
  display: flex;
  justify-content: center;
  color: var(--muted);
}

@media (max-width: 1100px) {
  .hero__inner,
  .about__inner,
  .contact__inner,
  .about-hero__inner {
    grid-template-columns: 1fr;
  }

  .hero__panel,
  .about__text,
  .about-detail__intro,
  .contact__card p {
    max-width: none;
  }

  .hero__photo,
  .about-hero__photo,
  .about__visual,
  .contact__visual {
    min-height: clamp(320px, 56vw, 520px);
  }

  .work-card {
    width: min(320px, 42vw);
  }

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

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

@media (max-width: 768px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .header__inner {
    flex-wrap: wrap;
    min-height: 78px;
    padding: 18px 0;
  }

  .nav {
    padding: 112px 28px 32px;
    align-items: flex-end;
  }

  .nav.open {
    display: flex;
  }

  .nav-toggle {
    top: 16px;
    right: 18px;
    width: 54px;
    height: 54px;
    border-radius: 16px;
  }

  .nav-toggle span {
    width: 26px;
  }

  .nav a {
    padding: 0;
    border-bottom: none;
    font-size: 1.9rem;
  }

  .hero {
    min-height: auto;
    padding: 54px 0 72px;
  }

  .hero__inner,
  .about__inner,
  .contact__inner,
  .about-hero__inner {
    gap: 34px;
  }

  .hero__lead {
    margin-top: 26px;
    font-size: 1.05rem;
  }

  .hero__photo,
  .about__visual,
  .about-hero__photo,
  .contact__visual {
    min-height: 300px;
    border-radius: 24px;
  }

  .section {
    padding: 72px 0;
  }

  .section__header {
    margin-bottom: 34px;
  }

  .about-hero {
    min-height: auto;
    padding-top: 118px;
  }

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

  .blog-card {
    padding: 22px 22px 26px;
  }

  .career-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .detail-panel {
    padding: 26px;
  }

  .contact__card {
    padding: 30px;
    border-radius: 24px;
  }

  .works-showcase {
    overflow: visible;
    padding-bottom: 0;
    mask-image: none;
  }

  .works-track {
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
    animation: none;
  }

  .works-track .work-card:nth-child(n + 4) {
    display: none;
  }

  .work-card {
    width: 100%;
    animation: none;
  }

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

@media (max-width: 480px) {
  .container {
    width: min(100% - 24px, 1180px);
  }

  .logo {
    font-size: 0.82rem;
    letter-spacing: 0.16em;
  }

  .hero__actions,
  .about-detail__actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
    min-height: 48px;
    padding: 0 18px;
  }

  .contact__card {
    padding: 24px 20px;
  }

  .hero__photo,
  .about__visual,
  .about-hero__photo,
  .contact__visual {
    min-height: 250px;
    border-radius: 20px;
  }
}

body.nav-open {
  overflow: hidden;
}

@media (prefers-reduced-motion: reduce) {
  .works-track,
  .work-card {
    animation: none;
  }
}