*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0a0a0c;
  --ink:       #f4f4f2;
  --ink-dim:   #9a9a9f;
  --ink-faint: #55555c;
  --line:      rgba(255,255,255,0.10);
  --accent:    #c9a25e;
  --font-en:   'Helvetica Neue', 'Arial', sans-serif;
  --font-jp:   'Hiragino Kaku Gothic ProN','Hiragino Sans','Yu Gothic',Meiryo,sans-serif;
  --ease:      cubic-bezier(0.22, 1, 0.36, 1);

  --w-bg:      #fdfdfc;
  --w-surface: #f6f5f2;
  --w-ink:     #17161a;
  --w-ink-dim: #6f6d72;
  --w-line:    #e8e6e1;
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-jp);
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }

.grain {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  opacity: 0.05; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.spotlight {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(600px circle at 50% 32%, rgba(201,162,94,0.10), transparent 60%);
  transition: background 0.4s ease;
}
.vignette {
  position: fixed; inset: 0; z-index: 2; pointer-events: none;
  background: radial-gradient(120% 90% at 50% 40%, transparent 55%, rgba(0,0,0,0.55) 100%);
}

.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.85rem clamp(1rem, 4vw, 2.25rem);
  padding-top: calc(0.85rem + env(safe-area-inset-top));
  background: rgba(10,10,12,0);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  transform: translateY(-100%);
  opacity: 0;
  transition: transform 0.5s var(--ease), opacity 0.4s ease,
              background 0.4s ease, border-color 0.4s ease, backdrop-filter 0.4s ease;
  pointer-events: none;
}
.site-nav.show {
  transform: translateY(0);
  opacity: 1;
  background: rgba(10,10,12,0.72);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  pointer-events: auto;
}
.nav-brand {
  display: flex; align-items: center; gap: 9px;
  text-decoration: none; color: var(--ink);
}
.nav-logo { width: 24px; height: 24px; object-fit: contain; }
.nav-word {
  font-family: var(--font-en); font-weight: 600;
  font-size: 0.82rem; letter-spacing: 0.22em; text-indent: 0.22em;
  color: var(--ink);
}
.nav-cta {
  font-family: var(--font-jp); font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.04em; color: var(--bg);
  background: var(--ink); text-decoration: none;
  padding: 7px 16px; border-radius: 999px;
  transition: transform 0.2s var(--ease), opacity 0.2s;
}
.nav-cta:hover { opacity: 0.9; }
.nav-cta:active { transform: scale(0.95) !important; }

.hero {
  position: fixed; inset: 0; z-index: 3;
  height: 100svh;
  display: flex; align-items: center; justify-content: center;
  padding: env(safe-area-inset-top) 1.5rem env(safe-area-inset-bottom);
  text-align: center;
}
.hero-inner {
  display: flex; flex-direction: column; align-items: center;
  width: 100%; max-width: 100%;
  --hp: 0;
  --hp-ease: calc(var(--hp) * var(--hp) * (3 - 2 * var(--hp)));
  transform: translateY(calc(var(--hp-ease) * -6vh)) scale(calc(1 - var(--hp-ease) * 0.08));
  will-change: transform;
}

.hero-spacer { height: 100svh; }

.logo-stage {
  position: relative;
  width: clamp(150px, 34vw, 240px);
  aspect-ratio: 761 / 793;
  display: flex; align-items: center; justify-content: center;
}
.logo-mark {
  width: 100%; height: 100%; object-fit: contain;
  opacity: 0;
  transform: scale(1.14);
  filter: drop-shadow(0 8px 40px rgba(0,0,0,0.6));
  animation: logoIn 1.5s var(--ease) 0.25s forwards;
}
@keyframes logoIn {
  0%   { opacity: 0; transform: scale(1.14); }
  100% { opacity: 1; transform: scale(1); }
}

.logo-ring {
  position: absolute; inset: -8%;
  border-radius: 50%;
  border: 1px solid rgba(201,162,94,0.5);
  opacity: 0;
  transform: scale(0.6);
  animation: ringOut 1.6s var(--ease) 0.5s forwards;
}
@keyframes ringOut {
  0%   { opacity: 0.0; transform: scale(0.55); }
  25%  { opacity: 0.7; }
  100% { opacity: 0; transform: scale(1.35); border-color: rgba(201,162,94,0); }
}

.wordmark {
  margin-top: 1.6rem;
  font-family: var(--font-en);
  font-weight: 600;
  font-size: clamp(1.15rem, 5.9vw, 2.7rem);
  letter-spacing: 0.34em;
  color: var(--ink);
  display: flex;
  justify-content: center;
  white-space: nowrap;
  width: 100%;
  max-width: 100%;
}
.wordmark span:last-child { margin-right: -0.34em; }
.wordmark span {
  opacity: 0;
  transform: translateY(14px);
  animation: charIn 0.7s var(--ease) forwards;
}
.wordmark span:nth-child(1){ animation-delay: 1.05s; }
.wordmark span:nth-child(2){ animation-delay: 1.13s; }
.wordmark span:nth-child(3){ animation-delay: 1.21s; }
.wordmark span:nth-child(4){ animation-delay: 1.29s; }
.wordmark span:nth-child(5){ animation-delay: 1.37s; }
.wordmark span:nth-child(6){ animation-delay: 1.45s; }
.wordmark span:nth-child(7){ animation-delay: 1.53s; }
.wordmark span:nth-child(8){ animation-delay: 1.61s; }
@keyframes charIn { to { opacity: 1; transform: translateY(0); } }

.tagline {
  margin-top: 1.1rem;
  font-size: clamp(0.85rem, 3.4vw, 1rem);
  letter-spacing: 0.28em;
  text-indent: 0.28em;
  color: var(--ink-dim);
  opacity: 0;
  animation: fadeUp 1s var(--ease) 1.9s forwards;
}
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.in { opacity: 1; transform: translateY(0); }

section { position: relative; z-index: 3; }

.page-white {
  position: relative; z-index: 10;
  background: var(--w-bg);
  color: var(--w-ink);
  border-radius: 28px 28px 0 0;
  box-shadow: 0 -40px 80px rgba(0,0,0,0.45);
}

.statement, .cta { max-width: 720px; margin: 0 auto; padding: 10vh 1.5rem 6vh; text-align: center; }

.profile {
  max-width: 620px; margin: 0 auto;
  padding: calc(7.5rem + env(safe-area-inset-top)) 1.5rem 6vh;
  border-bottom: 1px solid var(--w-line);
}
.profile-kicker {
  font-family: var(--font-en);
  font-size: clamp(1.5rem, 7.2vw, 2.4rem);
  font-weight: 700; letter-spacing: -0.01em;
  color: var(--w-ink);
  margin-bottom: 2rem;
}

.profile-photo {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;
  max-width: 380px;
  margin: 0 auto;
  border-radius: 18px;
  background: var(--w-surface);
  border: 1px solid var(--w-line);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.profile-photo-img {
  width: 100%; height: 100%; object-fit: cover; object-position: center 20%;
  transform: scale(1.06);
  transition: transform 0.6s var(--ease);
}
.profile.in .profile-photo-img { transform: scale(1); }
@media (hover: hover) {
  .profile-photo:hover .profile-photo-img { transform: scale(1.04); }
}
.profile-links {
  position: absolute; right: 12px; bottom: 12px;
  display: flex; flex-direction: column; gap: 8px;
}
.profile-links a {
  width: 38px; height: 38px; border-radius: 50%;
  background: rgba(23,22,26,0.72);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  text-decoration: none;
  transition: background 0.2s ease, transform 0.2s ease;
}
.profile-links a:hover { background: var(--accent); transform: translateY(-1px); }

.profile-name-en {
  margin-top: 2rem;
  font-family: var(--font-en);
  font-size: clamp(2.2rem, 11vw, 3.4rem);
  font-weight: 700; letter-spacing: -0.01em; line-height: 1;
  color: var(--w-ink);
  text-align: center;
}
.profile-name-jp {
  margin-top: 0.6rem;
  font-family: var(--font-jp);
  font-size: 0.85rem; font-weight: 500; letter-spacing: 0.14em; text-indent: 0.14em;
  color: var(--w-ink-dim);
  text-align: center;
}
.profile-bio {
  margin-top: 1.8rem;
  color: var(--w-ink-dim);
  font-size: clamp(0.85rem, 3.4vw, 0.95rem);
  line-height: 1.9;
  text-align: center;
}

.profile-timeline { margin-top: 2.2rem; }
.tl-row {
  display: flex; align-items: baseline; gap: 1.2rem;
  padding: 0.9rem 0;
  border-top: 1px solid var(--w-line);
  font-size: 0.85rem;
  opacity: 0;
  transform: translateX(-14px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.profile.in .tl-row { opacity: 1; transform: translateX(0); }
.profile.in .tl-row:nth-child(1) { transition-delay: 0.05s; }
.profile.in .tl-row:nth-child(2) { transition-delay: 0.15s; }
.profile.in .tl-row:nth-child(3) { transition-delay: 0.25s; }
.tl-row:last-child { border-bottom: 1px solid var(--w-line); }
.tl-label {
  font-family: var(--font-en);
  font-size: 0.7rem; letter-spacing: 0.1em;
  color: var(--w-ink-dim); min-width: 4.4rem; flex-shrink: 0;
}
.tl-value { color: var(--w-ink); font-weight: 500; }

.eyebrow {
  position: relative;
  display: block;
  font-family: var(--font-en);
  font-size: 11px; letter-spacing: 0.4em;
  color: var(--accent); margin-bottom: 1.4rem;
}

.statement h2 {
  position: relative;
  display: block;
  font-size: clamp(1.4rem, 5.6vw, 2.3rem);
  font-weight: 700; line-height: 1.55; letter-spacing: 0.02em;
  margin-bottom: 1.6rem;
  color: var(--w-ink);
}
.statement h2::after {
  content: '';
  position: absolute; left: 50%; bottom: -0.3em;
  width: 0; height: 2px;
  background: var(--accent);
  transform: translateX(-50%);
  transition: width 1s var(--ease) 0.2s;
}
.statement.in h2::after { width: 3.4rem; }

.lead { color: var(--w-ink-dim); font-size: clamp(0.9rem, 3.6vw, 1rem); line-height: 2; }

.services { max-width: 760px; margin: 0 auto; padding: 4vh 1.5rem 12vh; }

.svc-list { display: flex; flex-direction: column; gap: 0; }

/* 縦持ち：トランプのカード山。
   全カードを「1つの背の高い共通の親(.svc-list)」の中で同じ top に sticky させると、
   後のカードが前のカードの上にぴったり重なって積み上がる。
   ・.svc-wrap は stacking モードでは高さ0の透明ラッパにして流れから外す（display:contents）
   ・各カードは同じ top:14vh で貼りつく
   ・.svc-list の高さ(スクロール区間)は JS が実測して設定する */
.svc-wrap {
  position: relative;
}
.svc-list.stacking { display: block; position: relative; }
.svc-list.stacking .svc-wrap { display: contents; }
/* 最後のカードの sticky 可動域を作るスペーサー（高さは JS が実測で設定）。 */
.svc-tail-spacer { width: 100%; pointer-events: none; }
.svc-list.stacking .svc-card {
  position: sticky;
  top: 14vh;           /* 全カード共通の固定位置。ここで綺麗に重なる */
  margin-bottom: 28px; /* 次カードがせり上がるまでの見かけの間隔 */
  /* 重なったとき、上に乗るカードの下に影が落ちて層がくっきり分かれる。
     上方向に強めの影を出して「前のカードの上に乗っている」立体感を出す。 */
  box-shadow:
    0 -2px 10px rgba(0,0,0,0.04),
    0 18px 50px rgba(0,0,0,0.16),
    0 0 0 1px rgba(0,0,0,0.03);
}

.svc-card {
  position: relative;
  overflow: hidden;
  text-align: left;
  background: var(--w-surface);
  border: 1px solid var(--w-line);
  border-radius: 22px;
  padding: 2rem 1.7rem;
  opacity: 0;
  transform: translateY(48px) scale(0.97);
  transform-origin: center top;
  /* 重なりが引き立つように、立体感のある綺麗な影に調整 */
  box-shadow: 0 20px 40px rgba(0,0,0,0.08), 0 0 0 1px rgba(0,0,0,0.02);
  transition:
    opacity 0.8s var(--ease),
    transform 0.8s var(--ease),
    border-color 0.4s ease,
    box-shadow 0.5s ease,
    background 0.5s ease;
  will-change: transform;
}
.svc-card.in {
  opacity: 1;
  transform: translateY(0) scale(1);
  transition:
    opacity 0.8s var(--ease),
    border-color 0.4s ease,
    box-shadow 0.5s ease,
    background 0.5s ease;
}

.svc-card.active {
  border-color: var(--accent);
  background: var(--w-bg);
  box-shadow: 0 24px 60px rgba(0,0,0,0.10);
}

.svc-num {
  position: absolute;
  top: -0.3em; right: 0.4rem;
  font-family: var(--font-en);
  font-size: clamp(4.5rem, 16vw, 7rem);
  font-weight: 700;
  line-height: 1;
  color: var(--w-ink);
  opacity: 0.045;
  letter-spacing: -0.02em;
  pointer-events: none;
  transition: opacity 0.5s ease, transform 0.6s var(--ease), color 0.5s ease;
  transform: translateY(0) scale(1);
}
.svc-card.active .svc-num {
  opacity: 0.09;
  color: var(--accent);
  transform: translateY(-4px) scale(1.05);
}

.svc-card h3 {
  position: relative;
  font-family: var(--font-en);
  font-size: clamp(1.15rem, 4.4vw, 1.5rem);
  font-weight: 700; letter-spacing: 0.01em;
  color: var(--w-ink);
  padding-right: 3rem;
  transition: transform 0.5s var(--ease);
}
.svc-card.active h3 { transform: translateX(4px); }

.svc-lead {
  position: relative;
  margin-top: 0.7rem;
  color: var(--w-ink-dim);
  font-size: clamp(0.85rem, 3.4vw, 0.95rem);
  line-height: 1.85;
  max-width: 34rem;
}

.svc-detail {
  position: relative;
  list-style: none;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin-top: 0;
  transition: max-height 0.55s var(--ease), opacity 0.4s ease 0.05s, margin-top 0.55s var(--ease);
}
.svc-card.active .svc-detail {
  max-height: 240px;
  opacity: 1;
  margin-top: 1.3rem;
}

/* 縦持ちの山積みモードでは、全カードの詳細を常時展開して高さを一定にする。
   （高さが変動すると sticky の重なり計算が崩れて、ただの縦並びに見えてしまう）
   トランジションは切って、最初から確定した高さにする。 */
.svc-list.stacking .svc-detail {
  max-height: 240px;
  opacity: 1;
  margin-top: 1.3rem;
  transition: none;
}
.svc-list.stacking .svc-detail li {
  opacity: 1;
  transform: translateX(0);
  transition: none;
}
.svc-detail li {
  position: relative;
  padding-left: 1.2rem;
  font-size: 0.84rem;
  color: var(--w-ink-dim);
  line-height: 1.8;
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity 0.4s ease, transform 0.4s var(--ease);
}
.svc-card.active .svc-detail li {
  opacity: 1;
  transform: translateX(0);
}
.svc-card.active .svc-detail li:nth-child(1) { transition-delay: 0.08s; }
.svc-card.active .svc-detail li:nth-child(2) { transition-delay: 0.15s; }
.svc-card.active .svc-detail li:nth-child(3) { transition-delay: 0.22s; }
.svc-detail li + li { margin-top: 0.5rem; }
.svc-detail li::before {
  content: ''; position: absolute; left: 0; top: 0.65em;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent);
}

@media (min-width: 720px), (orientation: landscape) and (max-height: 600px) {
  .services { max-width: none; padding-left: 0; padding-right: 0; }
  .svc-list {
    flex-direction: row;
    gap: 1rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 0.4rem clamp(1.2rem, 6vw, calc(50% - 340px)) 1rem;
    scroll-padding-left: clamp(1.2rem, 6vw, calc(50% - 340px));
  }
  .svc-list::-webkit-scrollbar { display: none; }
  .svc-wrap {
    height: auto;
    margin-bottom: 0;
    flex: 0 0 auto;
    width: min(80vw, 360px);
    scroll-snap-align: start;
  }
  .svc-card {
    position: static;
    min-height: 0;
    width: 100%;
    cursor: pointer;
  }
}

.cta {
  position: relative;
  overflow: hidden;
  background: var(--w-surface);
  border-radius: 24px;
  max-width: 860px; padding: 9vh 1.5rem;
  margin: 0 auto 0;
}
.cta::before {
  content: '';
  position: absolute; inset: -40%;
  background: conic-gradient(from 0deg, transparent 0deg, rgba(201,162,94,0.16) 60deg, transparent 140deg, transparent 360deg);
  animation: ctaSpin 14s linear infinite;
  pointer-events: none;
}
@keyframes ctaSpin { to { transform: rotate(360deg); } }

.cta h2 {
  position: relative;
  font-size: clamp(1.5rem, 6vw, 2.4rem);
  font-weight: 700; line-height: 1.5; margin-bottom: 2.2rem;
  color: var(--w-ink);
}
.cta-actions { position: relative; display: flex; flex-direction: column; align-items: center; gap: 1rem; }

.btn-primary {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--w-ink); color: var(--w-bg);
  font-family: var(--font-jp); font-weight: 600; font-size: 0.95rem;
  letter-spacing: 0.04em;
  padding: 15px 38px; border-radius: 999px;
  text-decoration: none;
  transition: transform 0.18s var(--ease), box-shadow 0.25s var(--ease);
  box-shadow: 0 10px 30px rgba(0,0,0,0.14), 0 0 0 0 rgba(201,162,94,0.5);
  animation: btnBreathe 2.8s ease-in-out infinite;
}
@keyframes btnBreathe {
  0%, 100% { box-shadow: 0 10px 30px rgba(0,0,0,0.14), 0 0 0 0 rgba(201,162,94,0.35); }
  50% { box-shadow: 0 10px 34px rgba(0,0,0,0.16), 0 0 0 8px rgba(201,162,94,0); }
}
.btn-primary:hover { box-shadow: 0 16px 40px rgba(201,162,94,0.3); animation-play-state: paused; }
.btn-primary:active { transform: scale(0.97) !important; transition-duration: 0.08s; }

.btn-primary::after {
  content: '';
  position: absolute; inset: 0; border-radius: inherit; overflow: hidden;
  background: linear-gradient(100deg, transparent 40%, rgba(255,255,255,0.35) 50%, transparent 60%);
  background-size: 220% 100%;
  background-position: 120% 0;
  pointer-events: none;
}
.btn-primary.in::after { animation: btnShine 1.6s ease-out 0.6s 1; }
@keyframes btnShine {
  from { background-position: 120% 0; }
  to   { background-position: -20% 0; }
}

.btn-ghost {
  color: var(--w-ink-dim); text-decoration: none;
  font-family: var(--font-en); font-size: 0.9rem; letter-spacing: 0.06em;
  border-bottom: 1px solid transparent; padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}
.btn-ghost:hover { color: var(--w-ink); border-color: var(--accent); }

.site-footer {
  text-align: center; padding: 6vh 1.5rem calc(4vh + env(safe-area-inset-bottom));
}
.footer-mark { width: 40px; margin: 0 auto 1rem; opacity: 0.82; }
.footer-copy {
  font-family: var(--font-en);
  font-size: 11px; letter-spacing: 0.14em; color: var(--w-ink-dim);
}

@media (max-width: 480px) {
  .logo-stage { width: clamp(160px, 46vw, 210px); }
  .wordmark { letter-spacing: 0.26em; }
  .wordmark span:last-child { margin-right: -0.26em; }
  .tagline { letter-spacing: 0.2em; text-indent: 0.2em; }
}

@media (prefers-reduced-motion: reduce) {
  .logo-mark, .logo-ring,
  .wordmark span, .tagline { animation: none !important; }
  .logo-mark, .wordmark span, .tagline { opacity: 1 !important; transform: none !important; filter: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .hero-inner { transform: none !important; opacity: 1 !important; }
  .site-nav { transition: opacity 0.3s ease, background 0.3s ease; }
  html { scroll-behavior: auto; }
}