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

:root {
  --azuki:       #a05060;
  --azuki-dark:  #7a3a48;
  --azuki-deep:  #3a1820;
  --azuki-light: #fdf5f6;
  --azuki-pale:  #f5e8ea;
  --white:       #ffffff;
  --gray:        #7a6065;
  --border:      #e8d5d8;
  --shadow:      0 2px 12px rgba(160,80,96,.10);
}

body {
  font-family: "Helvetica Neue", "Hiragino Sans", "Hiragino Kaku Gothic ProN",
               "Noto Sans JP", Arial, sans-serif;
  background: var(--azuki-light);
  color: #2d1a1e;
  min-height: 100vh;
}

/* ── Header ── */
header {
  background: var(--azuki-deep);
  color: var(--white);
  padding: 0 1.5rem;
}
.header-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 0 1.8rem;
  display: flex;
  align-items: center;
  gap: 1.2rem;
}
.logo-mark {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-mark img {
  width: 56px;
  height: 56px;
  object-fit: contain;
}
.logo-text h1 {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: .04em;
}
.logo-text p {
  font-size: .8rem;
  color: #c8a8ae;
  margin-top: .15rem;
  letter-spacing: .08em;
}

/* ── Lang nav ── */
.lang-nav {
  margin-left: auto;
  display: flex;
  gap: .5rem;
}
.lang-nav-pill {
  font-size: .75rem;
  font-weight: 600;
  padding: .3rem .75rem;
  border-radius: 999px;
  text-decoration: none;
  border: 1.5px solid rgba(255,255,255,.3);
  color: rgba(255,255,255,.7);
  transition: background .15s, color .15s;
}
.lang-nav-pill:hover {
  background: rgba(255,255,255,.1);
  color: var(--white);
}
.lang-nav-pill.current {
  background: var(--azuki);
  border-color: var(--azuki);
  color: var(--white);
}

/* ── Main ── */
main {
  max-width: 900px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.section-title {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gray);
  border-left: 3px solid var(--azuki);
  padding-left: .75rem;
  margin-bottom: 1.2rem;
}

/* ── Doc list ── */
.doc-list {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-bottom: 2.5rem;
}
a.doc-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: background .15s;
}
a.doc-row:last-child { border-bottom: none; }
a.doc-row:hover { background: var(--azuki-pale); }
.doc-row-label {
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--azuki);
  margin-bottom: .2rem;
}
.doc-row-name {
  font-size: .9375rem;
  font-weight: 600;
  color: #2d1a1e;
}
.doc-row-sub {
  font-size: .8rem;
  color: var(--gray);
  margin-top: .1rem;
}
.doc-row-body { flex: 1; }
.doc-row-arrow {
  font-size: 1.2rem;
  color: var(--border);
}

/* ── Footer ── */
footer {
  background: var(--azuki-deep);
  color: #c8a8ae;
  text-align: center;
  font-size: .8rem;
  padding: 1.5rem 1rem;
}
footer a { color: #c8a8ae; }

/* ── Responsive ── */
@media (max-width: 480px) {
  .header-inner { flex-direction: column; align-items: flex-start; gap: .8rem; }
  .lang-nav { margin-left: 0; }
}