:root {
  color-scheme: light;
  --paper: #f2efe7;
  --paper-deep: #e7e1d5;
  --ink: #242721;
  --ink-soft: #555a50;
  --line: #c8c1b4;
  --line-strong: #a29a8c;
  --moss: #31594a;
  --moss-deep: #213f35;
  --clay: #b75f3e;
  --spot-blue: #3b82f6;
  --spot-green: #10b981;
  --white: #fffdf8;
  --sans: "Yu Gothic", "YuGothic", "Hiragino Kaku Gothic ProN", "BIZ UDPGothic", system-ui, sans-serif;
  --serif: "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", "BIZ UDPMincho", serif;
  --measure: 72rem;
  --text-measure: 44rem;
  --shadow: 0 1.4rem 3.5rem rgb(47 44 36 / 9%);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  min-width: 20rem;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent 49.9%, rgb(49 89 74 / 4%) 50%, transparent 50.1%),
    var(--paper);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.85;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(rgb(36 39 33 / 10%) 0.55px, transparent 0.55px);
  background-size: 6px 6px;
  content: "";
  opacity: 0.2;
  pointer-events: none;
}

a {
  color: inherit;
  text-underline-offset: 0.22em;
  text-decoration-thickness: 1px;
}

a:hover {
  color: var(--moss);
}

img {
  max-width: 100%;
}

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

:focus-visible {
  outline: 3px solid var(--clay);
  outline-offset: 4px;
}

::selection {
  color: var(--white);
  background: var(--moss);
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.65rem 1rem;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-160%);
}

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

.container {
  width: min(calc(100% - 2rem), var(--measure));
  margin-inline: auto;
}

.narrow {
  width: min(calc(100% - 2rem), var(--text-measure));
  margin-inline: auto;
}

.section {
  padding-block: clamp(4.5rem, 9vw, 8rem);
  border-top: 1px solid var(--line);
}

.section--soft {
  background: rgb(255 253 248 / 52%);
}

.eyebrow {
  display: flex;
  gap: 0.7rem;
  align-items: center;
  margin: 0 0 1.2rem;
  color: var(--moss);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 1.4;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 2.3rem;
  height: 1px;
  background: currentColor;
  content: "";
}

.section-title,
.page-title {
  max-width: 14ch;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.15rem, 5vw, 4.8rem);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 1.18;
}

.section-lead {
  max-width: 38rem;
  margin: 1.5rem 0 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.8vw, 1.15rem);
}

.text-link {
  display: inline-flex;
  gap: 0.55rem;
  align-items: center;
  font-weight: 700;
  text-decoration: none;
}

.text-link::after {
  content: "↗";
  transition: transform 180ms ease;
}

.text-link:hover::after {
  transform: translate(0.15rem, -0.15rem);
}

.button {
  display: inline-flex;
  min-height: 3.15rem;
  padding: 0.7rem 1.1rem;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ink);
  color: var(--white);
  background: var(--ink);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition:
    color 180ms ease,
    background 180ms ease,
    transform 180ms ease;
}

.button:hover {
  color: var(--ink);
  background: transparent;
  transform: translateY(-2px);
}

.button--ghost {
  color: var(--ink);
  background: transparent;
}

.button--ghost:hover {
  color: var(--white);
  background: var(--ink);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.button-row--center {
  justify-content: center;
}

.site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgb(242 239 231 / 92%);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  min-height: 5rem;
  gap: 1.5rem;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-grid;
  text-decoration: none;
}

.brand strong {
  font-size: 1rem;
  letter-spacing: 0.18em;
  line-height: 1.2;
}

.brand small {
  color: var(--ink-soft);
  font-size: 0.62rem;
  letter-spacing: 0.13em;
}

.desktop-nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  font-size: 0.82rem;
  font-weight: 700;
}

.desktop-nav a {
  text-decoration: none;
}

.nav-spotlog {
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--line-strong);
}

.mobile-nav {
  display: none;
}

.site-footer {
  padding-block: 3rem 2rem;
  color: var(--paper);
  background: var(--ink);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 3rem;
}

.footer-brand {
  margin: 0 0 1rem;
  font-family: var(--serif);
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  letter-spacing: -0.04em;
  line-height: 1;
}

.footer-copy {
  max-width: 28rem;
  margin: 0;
  color: #c8c8c0;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem 1.5rem;
  align-content: start;
}

.footer-links a {
  color: #efeee8;
}

.footer-links span {
  color: #aeb0a8;
}

.footer-meta {
  display: flex;
  margin-top: 3rem;
  padding-top: 1.2rem;
  justify-content: space-between;
  border-top: 1px solid #51544d;
  color: #aeb0a8;
  font-size: 0.75rem;
}

.hero {
  overflow: hidden;
  min-height: min(52rem, calc(100svh - 5rem));
  padding-block: clamp(4rem, 9vw, 8rem) 3rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(15rem, 0.65fr);
  gap: clamp(2.5rem, 7vw, 7rem);
  align-items: end;
}

.hero-kicker {
  margin: 0 0 1rem;
  color: var(--moss);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.hero-title {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3.8rem, 10vw, 8.8rem);
  font-weight: 500;
  letter-spacing: -0.085em;
  line-height: 0.92;
}

.hero-title span {
  display: block;
  margin-top: 0.15em;
  color: var(--clay);
  font-size: 0.38em;
  letter-spacing: -0.035em;
  line-height: 1.35;
}

.hero-intro {
  position: relative;
  padding: 1.6rem 0 0 1.5rem;
  border-top: 1px solid var(--ink);
}

.hero-intro::before {
  position: absolute;
  top: -0.35rem;
  left: -0.32rem;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: var(--clay);
  content: "";
}

.hero-intro p {
  margin: 0;
}

.hero-intro p + p {
  margin-top: 1rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.hero-index {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: clamp(4rem, 11vw, 8rem);
  border-block: 1px solid var(--line);
}

.hero-index div {
  padding: 1rem;
  border-right: 1px solid var(--line);
}

.hero-index div:last-child {
  border-right: 0;
}

.hero-index span {
  display: block;
  color: var(--clay);
  font-family: var(--serif);
  font-size: 1.5rem;
}

.hero-index strong {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(3rem, 9vw, 8rem);
}

.about-copy {
  max-width: 40rem;
  font-size: clamp(1.08rem, 2.2vw, 1.35rem);
}

.about-copy p {
  margin-top: 0;
}

.name-notes {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-top: 3rem;
  border-top: 1px solid var(--line);
}

.name-note {
  padding: 1rem 1rem 1rem 0;
  border-bottom: 1px solid var(--line);
}

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

.name-note:nth-child(even) {
  padding-left: 1rem;
}

.name-note dt {
  color: var(--moss);
  font-weight: 800;
  letter-spacing: 0.12em;
}

.name-note dd {
  margin: 0.25rem 0 0;
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.project-list {
  margin-top: 3.5rem;
  border-top: 1px solid var(--line-strong);
}

.project-card {
  display: grid;
  grid-template-columns: 5rem minmax(0, 1fr) minmax(13rem, 0.65fr);
  gap: clamp(1rem, 4vw, 3rem);
  padding-block: 2.5rem;
  align-items: start;
  border-bottom: 1px solid var(--line);
}

.project-no {
  color: var(--clay);
  font-family: var(--serif);
  font-size: 2rem;
}

.project-card h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.1;
}

.project-card h3 span {
  display: inline-block;
  margin-left: 0.8rem;
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  vertical-align: middle;
}

.project-card p {
  margin: 0.7rem 0 0;
  color: var(--ink-soft);
}

.project-actions {
  display: grid;
  gap: 0.7rem;
  justify-items: start;
}

.spotlog-line {
  width: 100%;
  height: 0.3rem;
  margin-top: 1.2rem;
  background: linear-gradient(105deg, var(--spot-blue), var(--spot-green));
}

.profile-grid {
  display: grid;
  grid-template-columns: minmax(16rem, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(3rem, 9vw, 8rem);
}

.profile-stamp {
  display: grid;
  aspect-ratio: 1;
  max-width: 21rem;
  padding: 2rem;
  place-content: end start;
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(135deg, transparent 48%, rgb(49 89 74 / 13%) 48%, rgb(49 89 74 / 13%) 52%, transparent 52%),
    var(--paper-deep);
}

.profile-stamp span {
  color: var(--clay);
  font-family: var(--serif);
  font-size: 4.5rem;
  line-height: 1;
}

.profile-stamp small {
  margin-top: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.profile-name {
  margin: 0 0 0.3rem;
  font-family: var(--serif);
  font-size: clamp(2.1rem, 4.5vw, 4rem);
  font-weight: 500;
  letter-spacing: -0.05em;
  line-height: 1.15;
}

.profile-role {
  margin: 0 0 2rem;
  color: var(--moss);
  font-weight: 700;
}

.profile-copy {
  max-width: 39rem;
  color: var(--ink-soft);
}

.activity-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 2rem;
}

.activity-tags span {
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--line-strong);
  font-size: 0.76rem;
}

.maker-details {
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.maker-details summary {
  padding: 1.2rem 0;
  cursor: pointer;
  font-weight: 700;
  list-style-position: outside;
}

.maker-details > div {
  max-width: 38rem;
  padding: 0 0 1.4rem 1.2rem;
  color: var(--ink-soft);
}

.maker-details p {
  margin: 0;
}

.maker-details p + p {
  margin-top: 0.7rem;
}

.contact-box {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  padding: clamp(1.5rem, 5vw, 3.5rem);
  align-items: end;
  border: 1px solid var(--ink);
  background: var(--white);
  box-shadow: var(--shadow);
}

.contact-box h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.2rem, 5vw, 4.6rem);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 1.1;
}

.contact-box p {
  max-width: 36rem;
  margin: 1rem 0 0;
  color: var(--ink-soft);
}

.contact-box .contact-pending {
  max-width: 18rem;
  margin: 0;
  font-size: 0.86rem;
}

.page-hero {
  padding-block: clamp(4rem, 10vw, 8rem);
}

.page-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(14rem, 0.75fr);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: end;
}

.page-summary {
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 2vw, 1.2rem);
}

.breadcrumb {
  margin-bottom: 2rem;
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  list-style: none;
}

.breadcrumb li + li::before {
  margin-right: 0.5rem;
  content: "/";
}

.prose {
  color: var(--ink-soft);
}

.prose h2 {
  margin: 4rem 0 1rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.3;
}

.prose h3 {
  margin: 2.2rem 0 0.7rem;
  color: var(--ink);
  font-size: 1.05rem;
}

.prose p,
.prose li {
  max-width: 44rem;
}

.prose ul,
.prose ol {
  padding-left: 1.3rem;
}

.prose li + li {
  margin-top: 0.45rem;
}

.note {
  margin-block: 2rem;
  padding: 1.2rem 1.4rem;
  border-left: 3px solid var(--moss);
  background: var(--white);
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-block: 2.5rem;
  background: var(--line);
  border: 1px solid var(--line);
}

.spec-item {
  padding: 1.4rem;
  background: var(--paper);
}

.spec-item dt {
  color: var(--moss);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.spec-item dd {
  margin: 0.4rem 0 0;
}

.spotlog-hero {
  position: relative;
}

.spotlog-hero::after {
  display: block;
  width: 100%;
  height: 0.38rem;
  margin-top: 3rem;
  background: linear-gradient(105deg, var(--spot-blue), var(--spot-green));
  content: "";
}

.privacy-date {
  margin-top: 1rem;
  color: var(--ink-soft);
  font-size: 0.8rem;
}

.error-page {
  display: grid;
  min-height: 68svh;
  padding-block: 4rem;
  place-items: center;
  text-align: center;
}

.error-code {
  margin: 0;
  color: var(--clay);
  font-family: var(--serif);
  font-size: clamp(7rem, 24vw, 16rem);
  letter-spacing: -0.08em;
  line-height: 0.8;
}

.error-page h1 {
  margin: 2rem 0 0.7rem;
  font-family: var(--serif);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 500;
}

@media (max-width: 52rem) {
  .desktop-nav {
    display: none;
  }

  .mobile-nav {
    display: block;
  }

  .mobile-nav summary {
    padding: 0.45rem 0.65rem;
    border: 1px solid var(--line-strong);
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 700;
    list-style: none;
  }

  .mobile-nav summary::-webkit-details-marker {
    display: none;
  }

  .mobile-nav[open] nav {
    position: absolute;
    top: 5rem;
    right: 1rem;
    left: 1rem;
    display: grid;
    padding: 0.6rem;
    border: 1px solid var(--line-strong);
    background: var(--white);
    box-shadow: var(--shadow);
  }

  .mobile-nav nav a {
    padding: 0.75rem;
    text-decoration: none;
  }

  .hero-grid,
  .about-grid,
  .profile-grid,
  .page-hero-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-intro {
    max-width: 31rem;
  }

  .project-card {
    grid-template-columns: 3.2rem 1fr;
  }

  .project-actions {
    grid-column: 2;
  }

  .contact-box {
    grid-template-columns: 1fr;
    align-items: start;
  }
}

@media (max-width: 34rem) {
  body {
    background: var(--paper);
  }

  .container,
  .narrow {
    width: min(calc(100% - 1.4rem), var(--measure));
  }

  .section {
    padding-block: 4rem;
  }

  .hero-title {
    font-size: clamp(3.5rem, 22vw, 5.2rem);
  }

  .hero-index {
    grid-template-columns: 1fr;
  }

  .hero-index div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .hero-index div:last-child {
    border-bottom: 0;
  }

  .name-notes,
  .spec-grid {
    grid-template-columns: 1fr;
  }

  .name-note:nth-child(odd) {
    border-right: 0;
  }

  .name-note:nth-child(even) {
    padding-left: 0;
  }

  .project-card {
    grid-template-columns: 1fr;
  }

  .project-actions {
    grid-column: auto;
  }

  .footer-links {
    grid-template-columns: 1fr;
  }

  .footer-meta {
    display: grid;
    gap: 0.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}