/* ---------- Reset + Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }
body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #ffffff;
  color: #0A0A0A;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'ss01', 'cv11';
  overflow-x: clip;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img { max-width: 100%; display: block; }

:root {
  --ink: #0A0A0A;
  --ink-2: #1a1a1a;
  --muted: #6B6B6B;
  --muted-2: #9A9A9A;
  --line: #E8E8E8;
  --line-strong: #D4D4D4;
  --bg: #ffffff;
  --bg-soft: #FAFAF9;
  --bg-dark: #0A0A0A;
  --accent: #2563EB;
  --accent-soft: #EFF4FF;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --container: 1200px;
  --pad: clamp(16px, 4vw, 48px);
}

/* ---------- Layout primitives ---------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}
.section { padding-top: clamp(80px, 12vw, 140px); padding-bottom: clamp(80px, 12vw, 140px); border-top: 1px solid var(--line); }
.section:first-of-type { border-top: 0; }

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: '';
  width: 18px;
  height: 1px;
  background: var(--muted-2);
}
.eyebrow.no-bar::before { display: none; }
.eyebrow .num { color: var(--ink); }

h1, h2, h3, h4 {
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0;
  text-wrap: balance;
}

.display {
  font-size: clamp(36px, 6.8vw, 88px);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.02;
  max-width: 15ch;
}
/* Japanese: don't break inside words on hero only; let columns wrap naturally */
html[lang="ja"] .display {
  word-break: keep-all;
  line-break: strict;
  overflow-wrap: anywhere;
}
html[lang="ja"] body {
  font-family: 'Noto Sans JP', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
.h2 {
  font-size: clamp(34px, 4.4vw, 56px);
  letter-spacing: -0.028em;
  line-height: 1.04;
}
.h3 {
  font-size: clamp(22px, 2vw, 28px);
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.lede {
  font-size: clamp(17px, 1.45vw, 20px);
  line-height: 1.5;
  color: var(--muted);
  max-width: 56ch;
  text-wrap: pretty;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.005em;
  border: 1px solid transparent;
  transition: transform 220ms cubic-bezier(.2,.7,.3,1), background 200ms, color 200ms, border-color 200ms, box-shadow 220ms;
  white-space: nowrap;
  background: transparent;
}
.btn .arrow {
  transition: transform 280ms cubic-bezier(.2,.7,.3,1);
  display: inline-block;
}
.btn:hover .arrow { transform: translateX(3px); }
.btn-primary {
  background: var(--ink);
  color: #fff;
}
.btn-primary:hover {
  background: #1a1a1a;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px -12px rgba(0,0,0,0.4);
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  border-color: var(--ink);
  background: #fafafa;
}
.btn-sm { padding: 9px 16px; font-size: 13.5px; }

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.78);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 240ms, background 240ms, color 240ms;
}
.header.scrolled {
  border-bottom-color: var(--line);
  background: rgba(255,255,255,0.92);
}
/* Header inverts when a dark section is behind it */
.header.on-dark {
  background: rgba(10,10,10,0.72);
  border-bottom-color: rgba(255,255,255,0.08);
  color: #fff;
}
.header.on-dark .brand-logo { filter: invert(1) brightness(1.6); }
.header.on-dark .nav a { color: rgba(255,255,255,0.62); }
.header.on-dark .nav a:hover { color: #fff; }
.header.on-dark .nav a::after { background: #fff; }
.header.on-dark .lang-switch button { color: rgba(255,255,255,0.55); }
.header.on-dark .lang-switch button.is-active { color: #fff; }
.header.on-dark .lang-switch .sep { color: rgba(255,255,255,0.25); }
.header.on-dark .btn-primary {
  background: #fff;
  color: var(--ink);
  border-color: #fff;
}
.header.on-dark .btn-primary:hover { background: rgba(255,255,255,0.9); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  letter-spacing: -0.01em;
  font-size: 15px;
}
.brand-logo {
  height: 32px;
  width: auto;
  display: block;
  transition: opacity 200ms, filter 220ms;
}
.brand:hover .brand-logo { opacity: 0.75; }
.brand .mark {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav a {
  font-size: 14px;
  color: var(--muted);
  position: relative;
  transition: color 180ms;
}
.nav a:hover { color: var(--ink); }
.nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 240ms cubic-bezier(.2,.7,.3,1);
}
.nav a:hover::after { transform: scaleX(1); }
.header-cta { display: flex; align-items: center; gap: 12px; }
.menu-btn { display: none; background: transparent; border: 1px solid var(--line-strong); border-radius: 999px; padding: 8px 14px; font-size: 13px; }

@media (max-width: 780px) {
  .nav { display: none; }
  .header-cta .btn-primary { padding: 9px 14px; font-size: 13px; }
}
@media (max-width: 460px) {
  .brand-logo { height: 26px; }
  .header-inner { height: 56px; }
  .header-cta .btn-primary .arrow { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  padding-top: clamp(80px, 14vw, 180px);
  padding-bottom: clamp(60px, 10vw, 120px);
  border-top: 0;
  position: relative;
}
.hero-inner { position: relative; z-index: 2; }

/* Canvas-based network/constellation background */
.hero-network {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  width: 100vw;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  -webkit-mask-image:
    radial-gradient(ellipse 58% 65% at 50% 45%, transparent 0%, transparent 22%, black 96%);
          mask-image:
    radial-gradient(ellipse 58% 65% at 50% 45%, transparent 0%, transparent 22%, black 96%);
}

/* Pseudo-element backgrounds — only when .bg-dots is on .hero */
.hero.bg-dots::before,
.hero.bg-dots::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  width: 100vw;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}
.hero.bg-dots::before {
  background-image:
    radial-gradient(circle, rgba(10,10,10,0.08) 0.9px, transparent 1.2px);
  background-size: 26px 26px;
  background-position: 50% 0;
  -webkit-mask-image:
    radial-gradient(ellipse 55% 60% at 48% 42%, transparent 0%, transparent 26%, black 92%);
          mask-image:
    radial-gradient(ellipse 55% 60% at 48% 42%, transparent 0%, transparent 26%, black 92%);
}
.hero.bg-dots::after {
  background-image:
    linear-gradient(rgba(10,10,10,0.18), rgba(10,10,10,0.18)),
    linear-gradient(rgba(10,10,10,0.18), rgba(10,10,10,0.18)),
    linear-gradient(rgba(10,10,10,0.18), rgba(10,10,10,0.18)),
    linear-gradient(rgba(10,10,10,0.18), rgba(10,10,10,0.18));
  background-size: 14px 1px, 1px 14px, 14px 1px, 1px 14px;
  background-position:
    calc(100% - 62px) 64px, calc(100% - 48px) 64px,
    48px calc(100% - 64px), 48px calc(100% - 78px);
  background-repeat: no-repeat;
}
.hero-inner {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  max-width: 1040px;
}
.status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  background: #fff;
}
.status .dot {
  width: 7px; height: 7px; border-radius: 999px;
  background: #16a34a;
  box-shadow: 0 0 0 0 rgba(22,163,74,0.6);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(22,163,74,0.55); }
  70% { box-shadow: 0 0 0 8px rgba(22,163,74,0); }
  100% { box-shadow: 0 0 0 0 rgba(22,163,74,0); }
}
.hero h1 .accent {
  background-image: url("../img/hero-highlight.svg");
  background-size: 108% 0.34em;
  background-position: 50% 96%;
  background-repeat: no-repeat;
  padding: 0 0.04em 0.12em;
  margin: 0 -0.04em;
}
.hero-cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-meta {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.02em;
}
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta .sep { width: 4px; height: 4px; background: var(--line-strong); border-radius: 999px; }

/* ---------- Credibility strip ---------- */
.cred {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
  background: var(--bg-soft);
}
.cred-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.cred-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-2);
}
.cred-items {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}
.cred-item {
  font-size: 14px;
  color: var(--ink);
  font-weight: 500;
  letter-spacing: -0.005em;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.cred-item .tick {
  width: 14px; height: 14px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--accent);
}

/* ---------- Section header pattern ---------- */
.sec-head {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(24px, 4vw, 64px);
  margin-bottom: clamp(40px, 5vw, 64px);
  align-items: end;
}
@media (max-width: 780px) {
  .sec-head { grid-template-columns: 1fr; }
}
.sec-head .left .eyebrow { margin-bottom: 16px; }
.sec-head .right { color: var(--muted); max-width: 56ch; }

/* ---------- What I Do (3-col) ---------- */
.do-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}
@media (max-width: 880px) { .do-grid { grid-template-columns: 1fr; } }

.do-cell {
  padding: 40px 32px 36px;
  border-right: 1px solid var(--line);
  position: relative;
  transition: background 240ms;
}
.do-cell:last-child { border-right: 0; }
@media (max-width: 880px) {
  .do-cell { border-right: 0; border-bottom: 1px solid var(--line); }
  .do-cell:last-child { border-bottom: 0; }
}
.do-cell:hover { background: var(--bg-soft); }
.do-cell .num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted-2);
  letter-spacing: 0.06em;
}
.do-cell h3 {
  margin: 28px 0 14px;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.018em;
}
.do-cell p { color: var(--muted); font-size: 15px; line-height: 1.55; margin: 0 0 24px; }
.do-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.do-tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 4px 8px;
  border-radius: 999px;
  background: #fff;
}

/* ---------- Products Section ---------- */
.prod-mark {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  position: relative;
  flex-shrink: 0;
  transition: transform 260ms cubic-bezier(.2,.7,.3,1), opacity 240ms, filter 240ms;
}
.prod-mark-img {
  height: 100%;
  width: auto;
  display: block;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
}

/* ----- Option A: Grid ----- */
.prod-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
@media (max-width: 1080px) { .prod-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 720px)  { .prod-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px)  { .prod-grid { grid-template-columns: 1fr; } }

.prod-cell {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 36px;
  padding: 28px 24px 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
  position: relative;
  transition: background 260ms;
  color: var(--ink);
  min-height: 232px;
}
.prod-cell:hover { background: var(--bg-soft); }
.prod-cell:hover .prod-mark { transform: translateY(-2px); }
.prod-cell:hover .prod-arrow { color: var(--ink); transform: translate(2px,-2px); }

.prod-cell-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}
.prod-arrow {
  color: var(--muted-2);
  transition: transform 280ms cubic-bezier(.2,.7,.3,1), color 220ms;
  display: inline-flex;
}
.prod-cell-body { display: flex; flex-direction: column; gap: 6px; }
.prod-name {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -0.012em;
}
.prod-desc {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.45;
  text-wrap: pretty;
}
.prod-cell-foot {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--muted-2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}
.dot-sep { color: var(--line-strong); }

/* ----- Option B: Reveal ----- */
.prod-reveal {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 8px 0 0;
}
.prod-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
}
@media (max-width: 720px) { .prod-strip { grid-template-columns: repeat(3, 1fr); } }

.prod-tile {
  background: transparent;
  border: 0;
  border-right: 1px solid var(--line);
  padding: 40px 16px 36px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  transition: background 260ms;
  position: relative;
}
.prod-tile:last-child { border-right: 0; }
.prod-tile::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 320ms cubic-bezier(.2,.7,.3,1);
}
.prod-tile:hover, .prod-tile.is-active { background: var(--bg-soft); }
.prod-tile:hover::after, .prod-tile.is-active::after { transform: scaleX(1); }
.prod-tile:hover .prod-mark { transform: translateY(-3px); }
.prod-tile .prod-mark {
  filter: grayscale(1);
  opacity: 0.4;
  transition: opacity 240ms, filter 240ms, transform 280ms cubic-bezier(.2,.7,.3,1);
}
.prod-tile:hover .prod-mark, .prod-tile.is-active .prod-mark {
  filter: none;
  opacity: 1;
}
.prod-tile-name {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -0.008em;
  color: var(--muted);
  transition: color 200ms;
}
.prod-tile:hover .prod-tile-name, .prod-tile.is-active .prod-tile-name { color: var(--ink); }

.prod-card {
  border-top: 1px solid var(--line);
  padding: 28px 32px 32px;
  background: var(--bg-soft);
  display: grid;
  grid-template-columns: 1fr 1.6fr auto;
  align-items: center;
  gap: 24px 32px;
}
@media (max-width: 880px) {
  .prod-card { grid-template-columns: 1fr; gap: 8px; padding: 24px; }
}
.prod-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.prod-card-tag {
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  background: #fff;
}
.prod-card-name {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.018em;
}
.prod-card-desc {
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.5;
  grid-column: 2 / 3;
  margin-top: -4px;
}
@media (max-width: 880px) {
  .prod-card-desc { grid-column: auto; }
}
.prod-card-foot {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  justify-self: end;
}
@media (max-width: 880px) { .prod-card-foot { justify-self: start; flex-wrap: wrap; } }
.prod-card-cta {
  color: var(--accent);
  padding-left: 12px;
  border-left: 1px solid var(--line-strong);
}

/* ---- Crossfade transitions for the card content ---- */
.prod-card-name, .prod-card-desc, .prod-card-foot, .prod-card-meta {
  animation: prodFade 320ms cubic-bezier(.2,.7,.3,1) both;
}
@keyframes prodFade {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: none; }
}

/* ----- Section foot ----- */
.prod-foot {
  margin-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.prod-foot-note {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ---------- Featured Work (FamilyTime) ---------- */
.featured {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: stretch;
}
@media (max-width: 980px) { .featured { grid-template-columns: 1fr; } }

.case-visual {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--bg-soft);
  padding: 28px;
  position: relative;
  overflow: hidden;
  min-height: 540px;
  display: flex;
  flex-direction: column;
}
.case-visual::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(10,10,10,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(10,10,10,0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.9) 30%, transparent 75%);
}
.case-visual .case-top {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono); font-size: 11.5px; color: var(--muted);
  letter-spacing: 0.08em; text-transform: uppercase;
  position: relative; z-index: 2;
}
.case-visual .case-top .dot { width: 8px; height: 8px; border-radius: 999px; background: var(--accent); display: inline-block; margin-right: 8px; vertical-align: middle; }
.phone-stage {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 2;
  padding: 12px 0;
}
.phone-shot {
  display: block;
  max-width: 100%;
  width: 280px;
  height: auto;
  border-radius: 36px;
  filter: drop-shadow(0 30px 60px rgba(10,10,10,0.18)) drop-shadow(0 12px 30px rgba(10,10,10,0.10));
  transition: transform 500ms cubic-bezier(.2,.7,.3,1);
}
.case-visual:hover .phone-shot { transform: translateY(-4px); }
.phone {
  width: 248px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 34px;
  padding: 14px 12px;
  box-shadow:
    0 1px 0 rgba(255,255,255,0.6) inset,
    0 30px 60px -20px rgba(10,10,10,0.18),
    0 12px 30px -16px rgba(10,10,10,0.10);
  position: relative;
  transition: transform 500ms cubic-bezier(.2,.7,.3,1);
}
.case-visual:hover .phone { transform: translateY(-4px); }
.phone .notch {
  width: 88px; height: 22px; border-radius: 999px;
  background: #0A0A0A; margin: 0 auto 14px;
}
.phone-screen {
  background: #fff;
  border-radius: 22px;
  padding: 16px 14px 18px;
  border: 1px solid var(--line);
}
.app-row { display: flex; justify-content: space-between; align-items: center; }
.app-title { font-size: 13px; font-weight: 600; letter-spacing: -0.01em; }
.app-sub { font-family: var(--mono); font-size: 9.5px; color: var(--muted); letter-spacing: 0.06em; text-transform: uppercase; }
.app-status {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 10.5px; font-family: var(--mono); color: #16a34a;
}
.app-status .live { width: 6px; height: 6px; border-radius: 999px; background: #16a34a; }
.app-card {
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 12px 14px;
  background: linear-gradient(180deg, #fafafa, #fff);
}
.app-card-head { display: flex; justify-content: space-between; align-items: center; }
.avatar {
  width: 28px; height: 28px; border-radius: 999px;
  background: linear-gradient(135deg, #2563EB, #7c3aed);
  color: #fff; font-size: 11px; font-weight: 600;
  display: inline-flex; align-items: center; justify-content: center;
  letter-spacing: -0.01em;
}
.kid-name { font-size: 12px; font-weight: 600; margin-top: 8px; }
.kid-meta { font-size: 10.5px; color: var(--muted); margin-top: 2px; }
.location-row {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--line);
  font-size: 10.5px;
}
.location-row .place { color: var(--ink); font-weight: 500; }
.location-row .time { font-family: var(--mono); color: var(--muted); }
.app-list { margin-top: 12px; display: flex; flex-direction: column; gap: 8px; }
.app-list-item {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 11px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
}
.app-list-item .label { display: flex; align-items: center; gap: 8px; }
.app-list-item .ico { width: 16px; height: 16px; border-radius: 5px; background: var(--accent-soft); color: var(--accent); display: inline-flex; align-items: center; justify-content: center; font-size: 10px; }
.app-list-item .meta { font-family: var(--mono); color: var(--muted); font-size: 10px; }

.case-meta-bottom {
  display: flex;
  gap: 32px;
  margin-top: 24px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  position: relative; z-index: 2;
}
.case-meta-bottom strong { color: var(--ink); font-weight: 500; }

.case-body { padding-top: 4px; display: flex; flex-direction: column; }
.case-tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.case-title {
  font-size: clamp(36px, 4.2vw, 52px);
  font-weight: 500;
  letter-spacing: -0.028em;
  line-height: 1.02;
  margin: 0 0 18px;
}
.case-lede { color: var(--muted); font-size: 17px; line-height: 1.55; margin: 0 0 32px; max-width: 52ch; }
.feature-list {
  list-style: none; padding: 0; margin: 0 0 32px;
  border-top: 1px solid var(--line);
}
.feature-list li {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.feature-list .idx {
  font-family: var(--mono); font-size: 11px;
  color: var(--muted-2); letter-spacing: 0.06em;
}
.feature-list .name { font-size: 15px; font-weight: 500; letter-spacing: -0.01em; }
.feature-list .desc { font-family: var(--mono); font-size: 11.5px; color: var(--muted); letter-spacing: 0.02em; text-transform: uppercase; }
.case-stats { display: flex; gap: 32px; margin-bottom: 32px; flex-wrap: wrap; }
.case-stat .v { font-size: 28px; font-weight: 500; letter-spacing: -0.02em; }
.case-stat .l { font-family: var(--mono); font-size: 11px; color: var(--muted); letter-spacing: 0.06em; text-transform: uppercase; margin-top: 4px; }

/* ---------- How I Think ---------- */
.think {
  background: var(--bg-dark);
  color: #fff;
  padding: clamp(90px, 13vw, 160px) 0;
  border-top: 1px solid var(--bg-dark);
}
.think .eyebrow { color: rgba(255,255,255,0.5); }
.think .eyebrow::before { background: rgba(255,255,255,0.3); }
.think .eyebrow .num { color: #fff; }
.think-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(32px, 5vw, 80px);
  margin-top: 60px;
  align-items: start;
}
@media (max-width: 880px) { .think-grid { grid-template-columns: 1fr; } }
.think-quote {
  font-size: clamp(28px, 3.4vw, 44px);
  font-weight: 500;
  letter-spacing: -0.024em;
  line-height: 1.12;
  text-wrap: balance;
}
.think-quote .em { color: rgba(255,255,255,0.45); }
.think-attr {
  margin-top: 28px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  display: inline-flex; align-items: center; gap: 12px;
}
.think-attr .bar { width: 24px; height: 1px; background: rgba(255,255,255,0.4); }
.think-principles { display: flex; flex-direction: column; gap: 0; }
.principle {
  padding: 22px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 16px;
  align-items: baseline;
}
.principle:last-child { border-bottom: 1px solid rgba(255,255,255,0.1); }
.principle .idx { font-family: var(--mono); font-size: 11px; color: rgba(255,255,255,0.5); letter-spacing: 0.06em; }
.principle .body .t { font-size: 17px; font-weight: 500; letter-spacing: -0.012em; }
.principle .body .d { color: rgba(255,255,255,0.55); font-size: 14.5px; margin-top: 6px; line-height: 1.5; }

/* ---------- Writing ---------- */
.writing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 880px) { .writing-grid { grid-template-columns: 1fr; } }
.post {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px 24px 22px;
  background: #fff;
  display: flex; flex-direction: column;
  min-height: 280px;
  transition: transform 240ms cubic-bezier(.2,.7,.3,1), border-color 240ms, box-shadow 240ms;
  cursor: pointer;
}
.post:hover {
  transform: translateY(-3px);
  border-color: var(--ink);
  box-shadow: 0 12px 32px -18px rgba(0,0,0,0.18);
}
.post .meta {
  display: flex; justify-content: space-between;
  font-family: var(--mono); font-size: 11px; color: var(--muted);
  letter-spacing: 0.04em; text-transform: uppercase;
}
.post .meta .cat { color: var(--accent); }
.post h3 {
  margin: 28px 0 12px;
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.018em;
  line-height: 1.2;
}
.post .excerpt { color: var(--muted); font-size: 14.5px; line-height: 1.55; margin: 0; flex: 1; }
.post .read {
  margin-top: 22px;
  font-size: 13px; font-weight: 500;
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--ink);
}
.post:hover .read .arrow { transform: translateX(3px); }
.post .read .arrow { transition: transform 280ms cubic-bezier(.2,.7,.3,1); display: inline-block; }

.writing-foot {
  margin-top: 36px;
  display: flex; justify-content: space-between; align-items: center;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.writing-foot .note { font-family: var(--mono); font-size: 12px; color: var(--muted); letter-spacing: 0.04em; }

/* ---------- Now Section ---------- */
.now-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: clamp(32px, 5vw, 72px);
}
@media (max-width: 880px) { .now-grid { grid-template-columns: 1fr; } }
.now-left .lede { margin-top: 12px; }
.now-list { display: flex; flex-direction: column; }
.now-item {
  padding: 24px 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 24px;
  align-items: baseline;
}
.now-item:last-child { border-bottom: 1px solid var(--line); }
.now-item .when {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.now-item .what .t { font-size: 17px; font-weight: 500; letter-spacing: -0.012em; }
.now-item .what .d { color: var(--muted); margin-top: 6px; font-size: 14.5px; line-height: 1.5; }
.now-item .badge {
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.06em; text-transform: uppercase;
  padding: 4px 10px; border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
}
.now-item .badge.live { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.now-item .badge.dot::before {
  content: ''; display: inline-block; width: 6px; height: 6px; border-radius: 999px;
  background: currentColor; margin-right: 8px; vertical-align: middle;
}
@media (max-width: 720px) {
  .now-item { grid-template-columns: 1fr; gap: 8px; }
  .now-item .badge { justify-self: start; }
}

/* ---------- Contact CTA ---------- */
.contact {
  background: var(--ink);
  color: #fff;
  padding: clamp(100px, 14vw, 180px) 0;
}
.contact .eyebrow { color: rgba(255,255,255,0.5); }
.contact .eyebrow::before { background: rgba(255,255,255,0.3); }
.contact .eyebrow .num { color: #fff; }
.contact h2 {
  font-size: clamp(46px, 8vw, 96px);
  letter-spacing: -0.035em;
  line-height: 1.0;
  margin: 28px 0 36px;
  font-weight: 500;
  text-wrap: balance;
}
.contact h2 .accent {
  font-style: italic;
  font-weight: 400;
  color: rgba(255,255,255,0.5);
}
.contact-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-on-dark {
  background: #fff; color: var(--ink);
}
.btn-on-dark:hover { background: #f0f0f0; transform: translateY(-1px); }
.btn-ghost-dark {
  background: transparent; color: #fff; border-color: rgba(255,255,255,0.25);
}
.btn-ghost-dark:hover { border-color: #fff; background: rgba(255,255,255,0.05); }
.contact-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 80px;
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 32px;
}
@media (max-width: 720px) { .contact-meta { grid-template-columns: 1fr; gap: 16px; } }
.contact-meta .k { font-family: var(--mono); font-size: 11px; color: rgba(255,255,255,0.45); letter-spacing: 0.08em; text-transform: uppercase; }
.contact-meta .v { font-size: 16px; margin-top: 8px; color: #fff; letter-spacing: -0.005em; }

/* ---------- Footer ---------- */
.footer { padding: 36px 0; border-top: 1px solid var(--line); background: #fff; }
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono); font-size: 12px; color: var(--muted);
  letter-spacing: 0.04em; flex-wrap: wrap; gap: 16px;
}
.footer .links { display: flex; gap: 20px; }
.footer .links a:hover { color: var(--ink); }
.back-top { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; background: none; border: 0; color: var(--muted); font-family: inherit; font-size: 12px; letter-spacing: 0.04em; }
.back-top:hover { color: var(--ink); }

/* ---------- Reveal animations ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 700ms cubic-bezier(.2,.7,.3,1), transform 700ms cubic-bezier(.2,.7,.3,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 80ms; }
.reveal.d2 { transition-delay: 160ms; }
.reveal.d3 { transition-delay: 240ms; }
.reveal.d4 { transition-delay: 320ms; }

/* ---------- Focus ---------- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Language switch (EN | JA) ---------- */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-right: 4px;
}
.lang-switch button {
  background: transparent;
  border: 0;
  padding: 4px 4px;
  font: inherit;
  letter-spacing: inherit;
  color: var(--muted-2);
  cursor: pointer;
  transition: color 180ms;
}
.lang-switch button:hover { color: var(--ink); }
.lang-switch button.is-active { color: var(--ink); }
.lang-switch .sep { color: var(--line-strong); user-select: none; }

@media (max-width: 780px) {
  .lang-switch { font-size: 11px; }
}
@media (max-width: 460px) {
  .lang-switch { margin-right: 0; }
}

/* Japanese: tighten balance + ease tracking on display-weight headlines */
html[lang="ja"] {
  --pad: clamp(16px, 4vw, 48px);
}
html[lang="ja"] .display,
html[lang="ja"] .h2,
html[lang="ja"] .case-title,
html[lang="ja"] .contact h2 {
  letter-spacing: -0.005em;
  line-height: 1.14;
}
html[lang="ja"] .display { line-height: 1.08; }
html[lang="ja"] .think-quote { line-height: 1.5; letter-spacing: -0.005em; }