.gh, .gf {
  --c-paper: #faf8f4; --c-ink: #17223b; --c-ink2: #4b5670; --c-line: #e9e4da;
  --c-navy: #14284b; --c-accent: #e8743b;
  --c-serif: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --c-sans: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;
  font-family: var(--c-sans);
  line-height: 1.6;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .gh, :root:not([data-theme="light"]) .gf {
    --c-paper: #0f1522; --c-ink: #f2f4f9; --c-ink2: #b9c0d1; --c-line: #283148; --c-navy: #0b1220; --c-accent: #f08a55;
  }
}
:root[data-theme="dark"] .gh, :root[data-theme="dark"] .gf {
  --c-paper: #0f1522; --c-ink: #f2f4f9; --c-ink2: #b9c0d1; --c-line: #283148; --c-navy: #0b1220; --c-accent: #f08a55;
}
.gh { position: sticky; top: 0; z-index: 30; background: color-mix(in srgb, var(--c-paper) 90%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--c-line); }
.gh-wrap { max-width: 1040px; margin: 0 auto; padding: 0 28px; display: flex; align-items: center; justify-content: space-between; height: 64px; }
@media (max-width: 560px) { .gh-wrap { padding: 0 18px; } }
.gh-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--c-ink); }
.gh-mark { width: 30px; height: 30px; border-radius: 9px; background: var(--c-navy); display: grid; place-items: center; }
.gh-mark i { width: 10px; height: 10px; border-radius: 50%; background: var(--c-accent); display: block; }
.gh-name { font-family: var(--c-serif); font-weight: 800; font-size: 18px; letter-spacing: .02em; }
.gh-nav { display: flex; gap: 26px; font-size: 14px; }
.gh-nav a { color: var(--c-ink2); text-decoration: none; padding: 6px 0; border-bottom: 2px solid transparent; }
.gh-nav a:hover { color: var(--c-ink); }
.gh-nav a[aria-current="page"] { color: var(--c-ink); font-weight: 700; border-bottom-color: var(--c-accent); }
@media (max-width: 760px) { .gh-nav a:not([aria-current]) { display: none; } }

.gf { background: var(--c-navy); color: rgba(255,255,255,.7); font-size: 13px; margin-top: 40px; }
.gf-wrap { max-width: 1040px; margin: 0 auto; padding: 34px 28px; display: flex; flex-wrap: wrap; gap: 12px 28px; justify-content: space-between; align-items: center; }
@media (max-width: 560px) { .gf-wrap { padding: 30px 18px; } }
.gf a { color: inherit; }
.gf-links { display: flex; gap: 22px; flex-wrap: wrap; }

/* unify page heroes with the new look */
.hero-page { background: #14284b !important; }
.hero-page::before { display: none !important; }
.hero-page .confetti { display: none !important; }
.hero-page header.top { padding-left: 0 !important; }
.hero-page h1 { font-family: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif !important; font-weight: 800 !important; letter-spacing: .01em; }
.hero-page .site-inner, .hero-page header.top { max-width: 1040px; }

/* ---- two-tier header (logo + CTAs, then nav bar) ---- */
.hd-top, .hd-nav {
  --h-paper: #faf8f4; --h-ink: #17223b; --h-line: #e9e4da; --h-navy: #14284b; --h-accent: #e8743b;
  --h-serif: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --h-sans: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;
  font-family: var(--h-sans); line-height: 1.6; box-sizing: border-box;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .hd-top, :root:not([data-theme="light"]) .hd-nav { --h-paper: #0f1522; --h-ink: #f2f4f9; --h-line: #283148; --h-navy: #0b1220; --h-accent: #f08a55; }
}
:root[data-theme="dark"] .hd-top, :root[data-theme="dark"] .hd-nav { --h-paper: #0f1522; --h-ink: #f2f4f9; --h-line: #283148; --h-navy: #0b1220; --h-accent: #f08a55; }
html { scroll-padding-top: 64px; }
.hd-top { background: var(--h-paper); }
.hd-wrap { max-width: 1040px; margin: 0 auto; padding: 0 28px; height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
@media (max-width: 560px) { .hd-wrap { padding: 0 16px; height: 62px; } }
.hd-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--h-ink); }
.hd-mark { width: 34px; height: 34px; border-radius: 10px; background: var(--h-navy); display: grid; place-items: center; }
.hd-mark i { width: 11px; height: 11px; border-radius: 50%; background: var(--h-accent); display: block; }
.hd-name { font-family: var(--h-serif); font-weight: 800; font-size: 24px; letter-spacing: .02em; }
.hd-cta { display: flex; gap: 10px; }
.hd-btn { display: inline-flex; align-items: center; text-decoration: none; font-weight: 800; font-size: 14px; border-radius: 999px; padding: 10px 20px; white-space: nowrap; border: 2px solid transparent; transition: transform .15s; }
.hd-btn:hover { transform: translateY(-1px); }
.hd-btn-p { background: var(--h-accent); color: #fff; box-shadow: 0 6px 16px rgba(232,116,59,.3); }
.hd-btn-g { border-color: var(--h-navy); color: var(--h-navy); }
:root[data-theme="dark"] .hd-btn-g { border-color: #7ea3ff; color: #7ea3ff; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .hd-btn-g { border-color: #7ea3ff; color: #7ea3ff; } }
@media (max-width: 560px) { .hd-btn-g { display: none; } .hd-btn { padding: 9px 16px; font-size: 13px; } .hd-name { font-size: 21px; } }

.hd-nav { position: sticky; top: 0; z-index: 40; background: var(--h-navy); color: #fff; box-shadow: 0 4px 14px rgba(20,40,75,.18); }
.hd-navin { max-width: 1040px; margin: 0 auto; padding: 0 12px; display: flex; justify-content: center; overflow-x: auto; scrollbar-width: none; }
.hd-navin::-webkit-scrollbar { display: none; }
@media (max-width: 860px) { .hd-navin { justify-content: flex-start; } }
.hd-nav a { color: #fff; text-decoration: none; font-weight: 700; font-size: 14.5px; padding: 15px 22px; white-space: nowrap; position: relative; opacity: .92; }
.hd-nav a + a::before { content: ""; position: absolute; left: 0; top: 30%; bottom: 30%; width: 1px; background: rgba(255,255,255,.28); }
.hd-nav a:hover { opacity: 1; background: rgba(255,255,255,.08); }
.hd-nav a[aria-current="page"] { opacity: 1; box-shadow: inset 0 -3px 0 var(--h-accent); }
@media (max-width: 560px) { .hd-nav a { padding: 13px 16px; font-size: 13.5px; } }

/* ---- single-row header (logo + nav), same on every page ---- */
.hd-one {
  --h-paper: #faf8f4; --h-ink: #17223b; --h-ink2: #4b5670; --h-line: #e9e4da; --h-navy: #14284b; --h-accent: #e8743b;
  --h-serif: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --h-sans: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;
  position: sticky; top: 0; z-index: 40; background: var(--h-paper); border-bottom: 1px solid var(--h-line);
  font-family: var(--h-sans); line-height: 1.6; box-sizing: border-box;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .hd-one { --h-paper: #0f1522; --h-ink: #f2f4f9; --h-ink2: #b9c0d1; --h-line: #283148; --h-navy: #0b1220; --h-accent: #f08a55; }
}
:root[data-theme="dark"] .hd-one { --h-paper: #0f1522; --h-ink: #f2f4f9; --h-ink2: #b9c0d1; --h-line: #283148; --h-navy: #0b1220; --h-accent: #f08a55; }
.hd-one-in { max-width: 1120px; margin: 0 auto; padding: 0 24px; min-height: 64px; display: flex; align-items: center; gap: 12px 28px; flex-wrap: wrap; }
.hd-one .hd-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--h-ink); flex: none; }
.hd-one .hd-mark { width: 32px; height: 32px; border-radius: 10px; background: var(--h-navy); display: grid; place-items: center; }
.hd-one .hd-mark i { width: 10px; height: 10px; border-radius: 50%; background: var(--h-accent); display: block; }
.hd-one .hd-name { font-family: var(--h-serif); font-weight: 800; font-size: 22px; letter-spacing: .02em; }
.hd1-nav { display: flex; align-items: center; gap: 2px; margin-left: auto; overflow-x: auto; scrollbar-width: none; }
.hd1-nav::-webkit-scrollbar { display: none; }
.hd1-nav a { color: var(--h-ink2); text-decoration: none; font-weight: 700; font-size: 14.5px; padding: 8px 14px; border-radius: 999px; white-space: nowrap; transition: background .15s, color .15s; }
.hd1-nav a:hover { color: var(--h-ink); background: rgba(20,40,75,.06); }
.hd1-nav a[aria-current="page"] { color: var(--h-ink); box-shadow: inset 0 -3px 0 var(--h-accent); border-radius: 0; }
.hd1-nav a[href*="juku-shindan"]:not([aria-current]) { background: var(--h-accent); color: #fff; margin-left: 6px; }
.hd1-nav a[href*="juku-shindan"]:not([aria-current]):hover { background: var(--h-accent); filter: brightness(1.05); }
@media (max-width: 860px) {
  .hd-one-in { padding: 8px 16px 0; }
  .hd1-nav { order: 3; width: 100%; margin-left: 0; padding-bottom: 6px; }
}


/* ---- home header: page anchors + "ほかのページ" dropdown ---- */
.hd1-nav a.is-cta { background: var(--h-accent); color: #fff; margin-left: 6px; }
.hd1-nav a.is-cta:hover { background: var(--h-accent); color: #fff; filter: brightness(1.05); }
.hd1-more { position: relative; margin-left: 4px; }
.hd1-more summary { list-style: none; cursor: pointer; color: var(--h-ink2); font-weight: 700; font-size: 14.5px; padding: 8px 14px; border-radius: 999px; white-space: nowrap; border: 1.5px solid var(--h-line); }
.hd1-more summary::-webkit-details-marker { display: none; }
.hd1-more summary::after { content: " ▾"; font-size: 11px; }
.hd1-more[open] summary { color: var(--h-ink); border-color: var(--h-navy); }
.hd1-menu { position: absolute; right: 0; top: calc(100% + 8px); min-width: 190px; background: var(--h-paper); border: 1px solid var(--h-line); border-radius: 14px; box-shadow: 0 14px 34px rgba(20,40,75,.16); padding: 6px; display: grid; z-index: 50; }
.hd1-menu a { padding: 10px 14px; border-radius: 10px; }
.hd1-nav { overflow: visible; }
@media (max-width: 860px) { .hd1-nav { overflow-x: auto; } .hd1-menu { position: fixed; right: 12px; top: 112px; } }

  /* break lines at phrase boundaries */
  h1, h2, h3, h4, p, li { word-break: auto-phrase; line-break: strict; text-wrap: pretty; }
  h1, h2, h3 { text-wrap: balance; }