:root {
  --bg: #f7f6f2;
  --paper: #fffefb;
  --ink: #080808;
  --muted: #66625d;
  --soft: #dedbd2;
  --line: rgba(8, 8, 8, 0.14);
  --signal: rgba(29, 118, 104, 0.18);
  --signal-soft: rgba(29, 118, 104, 0.08);
  --font-sans: "Noto Sans JP", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-serif: Georgia, "Times New Roman", "Yu Mincho", "Hiragino Mincho ProN", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  position: relative;
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.8;
  letter-spacing: 0;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -3;
  pointer-events: none;
  content: "";
  background:
    linear-gradient(140deg, rgba(255, 254, 251, 0.86), rgba(247, 246, 242, 0.9)),
    linear-gradient(180deg, rgba(255, 254, 251, 0.92), rgba(247, 246, 242, 0.96));
}

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

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

.intro {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 45%, rgba(29, 118, 104, 0.12), transparent 34%),
    linear-gradient(140deg, #fffefb, #f7f6f2 64%, #ebe9e1);
  animation: introExit 3s cubic-bezier(0.76, 0, 0.24, 1) forwards;
}

.intro::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, rgba(255, 254, 251, 0.8), transparent 18%, transparent 82%, rgba(255, 254, 251, 0.8)),
    linear-gradient(to bottom, rgba(255, 254, 251, 0.86), transparent 28%, transparent 76%, rgba(255, 254, 251, 0.9));
}

.intro__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  mix-blend-mode: multiply;
}

.hero-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background: linear-gradient(115deg, rgba(247, 246, 242, 0), rgba(29, 118, 104, 0.045), rgba(247, 246, 242, 0));
  opacity: 0.9;
}

.hero-visual::before {
  position: absolute;
  inset: -42% -18%;
  content: "";
  background:
    conic-gradient(
      from 142deg at 50% 50%,
      transparent 0deg,
      rgba(29, 118, 104, 0.11) 54deg,
      rgba(255, 254, 251, 0.02) 112deg,
      rgba(8, 8, 8, 0.045) 176deg,
      transparent 244deg,
      rgba(29, 118, 104, 0.08) 306deg,
      transparent 360deg
    );
  filter: blur(34px);
  opacity: 0.72;
  transform-origin: center;
  animation: ambientField 28s ease-in-out infinite alternate;
}

.hero-visual::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(105deg, transparent 0 36%, rgba(255, 254, 251, 0.58) 48%, transparent 60%),
    linear-gradient(72deg, transparent 0 58%, rgba(29, 118, 104, 0.08) 68%, transparent 78%);
  mix-blend-mode: multiply;
  transform: translateX(-12%);
  animation: lightDrift 18s cubic-bezier(0.45, 0, 0.2, 1) infinite alternate;
}

.hero-visual__canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  opacity: 0.76;
  mix-blend-mode: multiply;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1120px, calc(100% - 40px));
  min-height: 112px;
  margin: 0 auto;
  background: rgba(247, 246, 242, 0.82);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font-size: 1.18rem;
  font-weight: 650;
}

.brand img {
  width: 78px;
  height: 78px;
  object-fit: contain;
}

.nav {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--muted);
  font-size: 0.88rem;
}

.nav a {
  position: relative;
  padding: 8px 0;
}

.nav a::after,
.text-link::after,
.mail-link::after {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  content: "";
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 220ms ease;
}

.nav a:hover::after,
.text-link:hover::after,
.mail-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

main {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 112px);
  padding: 60px 0 104px;
  text-align: center;
}

.hero__copy {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 100%;
  margin-bottom: 22px;
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 5.2vw, 5.2rem);
  font-weight: 400;
  line-height: 1.04;
}

h1 span {
  display: block;
  white-space: nowrap;
}

h2 {
  margin-bottom: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 3.8vw, 3.9rem);
  font-weight: 400;
  line-height: 1.05;
}

h3 {
  margin-bottom: 8px;
  font-size: clamp(1.12rem, 1.7vw, 1.35rem);
  line-height: 1.35;
}

.hero__copy p:not(.eyebrow),
.contact p,
.about__body p {
  color: var(--muted);
  font-size: clamp(1rem, 1.28vw, 1.12rem);
}

.hero__copy p:not(.eyebrow) {
  max-width: 420px;
  margin-bottom: 26px;
  margin-right: auto;
  margin-left: auto;
}

.text-link,
.mail-link {
  position: relative;
  display: inline-block;
  padding-bottom: 4px;
  font-weight: 700;
}

.section {
  position: relative;
  display: grid;
  grid-template-columns: minmax(220px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(32px, 8vw, 96px);
  padding: clamp(72px, 10vw, 124px) 0;
  border-bottom: 1px solid var(--line);
}

.section::after {
  position: absolute;
  top: 0;
  left: calc(50% - 50vw);
  z-index: -1;
  width: 100vw;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(8, 8, 8, 0.14), transparent);
}

.section__head {
  position: sticky;
  top: 116px;
  align-self: start;
}

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

.service-list article {
  display: grid;
  grid-template-columns: 64px minmax(180px, 0.7fr) minmax(0, 1fr);
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.service-list span {
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: 1.35rem;
}

.service-list p {
  margin: 0;
  color: var(--muted);
}

.about__body {
  max-width: 700px;
}

.profile__body {
  display: grid;
  grid-template-columns: minmax(160px, 220px) minmax(0, 1fr);
  align-items: start;
  gap: clamp(28px, 5vw, 56px);
  max-width: 820px;
}

.profile__photo {
  position: relative;
  display: grid;
  width: min(220px, 48vw);
  aspect-ratio: 4 / 5;
  margin: 0;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    linear-gradient(145deg, rgba(255, 254, 251, 0.82), rgba(29, 118, 104, 0.08)),
    var(--paper);
}

.profile__photo::before {
  position: absolute;
  inset: 12%;
  content: "";
  border: 1px solid rgba(8, 8, 8, 0.08);
  transform: rotate(-5deg);
}

.profile__photo img {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile__photo img[src=""],
.profile__photo img:not([src]) {
  display: none;
}

.profile__photo span {
  position: relative;
  color: rgba(8, 8, 8, 0.32);
  font-family: var(--font-sans);
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  font-weight: 650;
  line-height: 1;
}

.profile__content {
  min-width: 0;
}

.profile__name {
  margin-bottom: 16px;
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 3rem);
  line-height: 1.1;
}

.profile__body p:not(.profile__name) {
  margin-bottom: 28px;
  color: var(--muted);
  font-size: clamp(1rem, 1.28vw, 1.12rem);
}

.profile__body dl {
  display: grid;
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--line);
}

.profile__body dl div {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.profile__body dt,
.profile__body dd {
  margin: 0;
}

.profile__body dt {
  color: var(--ink);
  font-weight: 700;
}

.profile__body dd {
  color: var(--muted);
}

.about__body ul {
  display: grid;
  gap: 8px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.about__body li {
  padding: 13px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.contact {
  position: relative;
  max-width: 820px;
  padding: clamp(72px, 10vw, 124px) 0;
}

.contact h2 {
  margin-bottom: 24px;
}

.contact p {
  max-width: 650px;
  margin-bottom: 28px;
}

.mail-link {
  font-size: clamp(1.2rem, 2.5vw, 2rem);
  font-family: var(--font-serif);
  font-weight: 400;
}

.footer {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 42px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}

[data-reveal] {
  transform: translateY(18px);
  opacity: 0;
  transition:
    opacity 780ms ease,
    transform 780ms ease;
}

[data-reveal].is-visible {
  transform: translateY(0);
  opacity: 1;
}

@keyframes ambientField {
  0% {
    transform: translate3d(-2%, -1%, 0) rotate(0deg) scale(1.03);
  }
  100% {
    transform: translate3d(2%, 1%, 0) rotate(14deg) scale(1.08);
  }
}

@keyframes lightDrift {
  0% {
    transform: translateX(-12%) skewX(-7deg);
    opacity: 0.46;
  }
  100% {
    transform: translateX(12%) skewX(-7deg);
    opacity: 0.68;
  }
}

@keyframes introExit {
  0%,
  58% {
    opacity: 1;
    visibility: visible;
  }
  100% {
    opacity: 0;
    visibility: hidden;
  }
}

@media (prefers-reduced-motion: reduce) {
  .intro {
    display: none;
  }

  .hero-visual,
  .hero-visual::before,
  .hero-visual::after,
  .hero-visual__canvas {
    animation: none !important;
  }

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

@media (max-width: 900px) {
  .section {
    grid-template-columns: 1fr;
  }

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

  .section__head {
    position: static;
  }

  .service-list article {
    grid-template-columns: 52px minmax(0, 1fr);
  }

  .service-list p {
    grid-column: 2;
  }

  .profile__body dl div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

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

  .profile__photo {
    width: min(220px, 62vw);
  }
}

@media (max-width: 640px) {
  .site-header,
  main,
  .footer {
    width: min(100% - 28px, 1120px);
  }

  .site-header {
    min-height: 84px;
  }

  .brand span {
    display: none;
  }

  .brand img {
    width: 60px;
    height: 60px;
  }

  .nav {
    gap: 12px;
    font-size: 0.8rem;
  }

  h1 {
    font-size: clamp(1.95rem, 8.6vw, 3.3rem);
  }

  .footer {
    flex-direction: column;
  }
}