/* ============================================================
   慶應義塾大学 体育会水泳部 競泳部門
   ============================================================ */

:root {
  --navy-900: #06182f;
  --navy-800: #0a2545;
  --navy-700: #103459;
  --blue-600: #1b6ca8;
  --blue-400: #4a9fd8;
  --blue-100: #e8f2fa;
  --red: #c8102e;
  --red-dark: #a20c24;
  --gold: #a8873a;
  --gold-dark: #7a6220;
  --cream: #fffdf7;
  --ink: #14202e;
  --ink-soft: #4c5b6b;
  --line: #dde5ec;
  --bg: #ffffff;
  --bg-tint: #f4f8fb;

  --font-sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  --font-serif: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "MS Mincho", serif;

  --wrap: 1120px;
  --radius: 4px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
  /* iOS Safari が狭いカラム内で文字を勝手に拡大し、
     レイアウトが崩れるのを防ぐ */
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  letter-spacing: .02em;
}

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

.container {
  width: min(100% - 48px, var(--wrap));
  margin-inline: auto;
}
.container-narrow { width: min(100% - 48px, 820px); }

.sp-only { display: none; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.note {
  font-size: .8rem;
  color: var(--ink-soft);
  opacity: .9;
}
.note.center { text-align: center; }
.ph { color: var(--ink-soft); font-style: italic; }
[data-placeholder] { color: var(--line) !important; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .93);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 20px;
}
.brand {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  line-height: 1.35;
  flex-shrink: 0;
}
.brand-main { font-size: .92rem; font-weight: 700; letter-spacing: .05em; }
.brand-sub {
  font-size: .68rem;
  color: var(--red);
  letter-spacing: .22em;
  font-weight: 700;
}
.nav { display: flex; align-items: center; gap: 20px; }
.nav a {
  text-decoration: none;
  font-size: .81rem;
  font-weight: 600;
  color: var(--ink);
  position: relative;
  padding: 4px 0;
  white-space: nowrap;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--red);
  transition: width .25s ease;
}
.nav a:hover::after { width: 100%; }
.nav .nav-cta {
  background: var(--navy-800);
  color: #fff;
  padding: 9px 16px;
  border-radius: var(--radius);
}
.nav .nav-cta::after { display: none; }
.nav .nav-cta:hover { background: var(--red); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px; height: 42px;
  border: 0; background: none; cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  height: 2px; width: 24px;
  background: var(--ink);
  margin-inline: auto;
  transition: transform .3s, opacity .2s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 15px 32px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 700;
  font-size: .92rem;
  letter-spacing: .04em;
  transition: transform .2s, background .2s, color .2s, border-color .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--red-dark); }
.btn-ghost {
  background: rgba(255,255,255,.12);
  color: #fff;
  border: 1px solid rgba(255,255,255,.45);
}
.btn-ghost:hover { background: rgba(255,255,255,.22); }
.btn-outline { border: 1px solid rgba(255,255,255,.5); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,.14); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: linear-gradient(160deg, var(--navy-900) 0%, var(--navy-700) 55%, var(--blue-600) 100%);
  color: #fff;
  overflow: hidden;
  padding: 116px 0 148px;
}
.hero-bg { position: absolute; inset: 0; opacity: .35; }
.hero-bg .lane {
  position: absolute;
  left: -10%;
  width: 120%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.5), transparent);
  animation: drift 9s ease-in-out infinite;
}
.hero-bg .lane:nth-child(1) { top: 22%; animation-delay: 0s; }
.hero-bg .lane:nth-child(2) { top: 38%; animation-delay: 1.1s; }
.hero-bg .lane:nth-child(3) { top: 54%; animation-delay: 2.2s; }
.hero-bg .lane:nth-child(4) { top: 70%; animation-delay: 3.3s; }
.hero-bg .lane:nth-child(5) { top: 86%; animation-delay: 4.4s; }
@keyframes drift {
  0%, 100% { transform: translateX(-3%); opacity: .25; }
  50%      { transform: translateX(3%);  opacity: .7; }
}

.hero-inner { position: relative; z-index: 2; }
.hero-eyebrow {
  font-size: .72rem;
  letter-spacing: .34em;
  color: var(--blue-400);
  font-weight: 700;
  margin: 0 0 26px;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5.2vw, 3.7rem);
  line-height: 1.45;
  font-weight: 600;
  margin: 0 0 30px;
  letter-spacing: .04em;
}
.hero-lead {
  font-size: clamp(.95rem, 1.6vw, 1.05rem);
  max-width: 42em;
  margin: 0 0 44px;
  color: rgba(255,255,255,.9);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }

.hero-wave {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  line-height: 0;
  z-index: 1;
}
.hero-wave svg { width: 100%; height: 90px; display: block; }
.hero-wave path { fill: #fff; }

/* ---------- Section base ---------- */
.section { padding: 100px 0; }
.section-tint { background: var(--bg-tint); }
.section-dark { background: var(--navy-900); color: #fff; }
.section-dark .section-lead,
.section-dark .note { color: rgba(255,255,255,.72); }

.section-head { max-width: 44em; margin: 0 0 54px; }
.section-eyebrow {
  font-size: .7rem;
  letter-spacing: .28em;
  font-weight: 700;
  color: var(--red);
  margin: 0 0 16px;
}
.section-dark .section-eyebrow { color: var(--blue-400); }
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  line-height: 1.5;
  font-weight: 600;
  margin: 0 0 20px;
  letter-spacing: .03em;
}
.section-lead { margin: 0; color: var(--ink-soft); font-size: .97rem; }
.section-lead strong { color: var(--ink); }

/* ============================================================
   01. なぜ両立できるのか
   ============================================================ */
.facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 46px;
}
.fact {
  background: #fff;
  padding: 32px 24px;
  text-align: center;
}
.fact-label {
  display: block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--red);
  margin-bottom: 12px;
}
.fact-num {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 4.4vw, 2.9rem);
  font-weight: 700;
  color: var(--navy-800);
  line-height: 1.25;
}
.fact-sub {
  display: block;
  font-size: .78rem;
  color: var(--ink-soft);
  margin-top: 8px;
}

.reasons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.reason {
  position: relative;
  padding: 28px 26px 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-top: 3px solid var(--navy-800);
  border-radius: var(--radius);
}
.reason-no {
  display: inline-grid;
  place-items: center;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--navy-800);
  color: #fff;
  font-family: var(--font-serif);
  font-size: .88rem;
  font-weight: 700;
  margin-bottom: 14px;
}
.reason h3 { margin: 0 0 10px; font-size: 1.02rem; line-height: 1.6; }
.reason p { margin: 0; font-size: .89rem; color: var(--ink-soft); }

.scroll-hint {
  text-align: center;
  margin: 46px 0 0;
  font-size: .87rem;
  font-weight: 700;
}
.scroll-hint a {
  text-decoration: none;
  border-bottom: 1px solid var(--red);
  padding-bottom: 3px;
}
.scroll-hint a:hover { color: var(--red); }
.scroll-hint span {
  display: block;
  margin-top: 10px;
  color: var(--red);
  animation: bob 1.8s ease-in-out infinite;
}
@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* ---------- コーチ ---------- */
.coach {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 56px;
  align-items: start;
}
.coach-photo {
  aspect-ratio: 4 / 5;
  background: linear-gradient(150deg, var(--navy-700), var(--blue-600));
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  color: rgba(255,255,255,.4);
  letter-spacing: .3em;
  font-size: .8rem;
  font-weight: 700;
}
.coach-role {
  font-size: .74rem;
  letter-spacing: .26em;
  color: var(--blue-400);
  font-weight: 700;
  margin: 0 0 10px;
}
.coach-name {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  margin: 0 0 26px;
  font-weight: 600;
  letter-spacing: .04em;
}
.coach-body p { color: rgba(255,255,255,.82); font-size: .95rem; margin: 0 0 20px; }
.coach-points { list-style: none; padding: 0; margin: 30px 0; display: grid; gap: 12px; }
.coach-points li {
  position: relative;
  padding-left: 26px;
  font-size: .92rem;
  color: rgba(255,255,255,.9);
}
.coach-points li::before {
  content: "";
  position: absolute;
  left: 0; top: .78em;
  width: 12px; height: 2px;
  background: var(--red);
}

/* ============================================================
   02. 合格体験記（証書デザイン / アコーディオン）
   ============================================================ */
.sample-notice {
  background: #fff8e6;
  border: 1px solid #f0d9a0;
  border-left: 4px solid #d9a520;
  border-radius: var(--radius);
  padding: 18px 22px;
  font-size: .85rem;
  color: #6b5410;
  margin: 0 0 40px;
  line-height: 1.85;
}

.interviews { display: grid; gap: 32px; }

.itv {
  position: relative;
  border: 3px solid var(--navy-800);
  border-radius: 2px;
  background:
    radial-gradient(circle at 50% 0%, rgba(27, 108, 168, .05), transparent 62%),
    repeating-linear-gradient(45deg, rgba(10, 37, 69, .022) 0 1px, transparent 1px 7px),
    repeating-linear-gradient(-45deg, rgba(10, 37, 69, .022) 0 1px, transparent 1px 7px),
    linear-gradient(var(--cream), #fbf8f0);
  box-shadow: 0 12px 34px rgba(10, 37, 69, .1);
  transition: transform .3s, box-shadow .3s;
}
.itv:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 48px rgba(10, 37, 69, .16);
}

.cert-inner {
  position: relative;
  margin: 9px;
  border: 1px solid var(--gold);
  padding: 38px 44px 32px;
}

/* 見本であることを示す透かし。
   実際の取材記事に差し替える際は .cert-sample の要素ごと削除する */
.cert-sample {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 3;
  margin: 0;
  transform: translate(-50%, -50%) rotate(-24deg);
  font-family: var(--font-serif);
  font-size: clamp(3.4rem, 12vw, 7rem);
  font-weight: 700;
  letter-spacing: .3em;
  text-indent: .3em;
  line-height: 1;
  white-space: nowrap;
  color: rgba(200, 16, 46, .13);
  pointer-events: none;
  user-select: none;
}

.cert-corner {
  position: absolute;
  width: 13px; height: 13px;
  border: 1px solid var(--gold);
  background: var(--cream);
  transform: rotate(45deg);
}
.cert-corner.tl { left: -7px;  top: -7px; }
.cert-corner.tr { right: -7px; top: -7px; }
.cert-corner.bl { left: -7px;  bottom: -7px; }
.cert-corner.br { right: -7px; bottom: -7px; }

.cert-head {
  text-align: center;
  border-bottom: 3px double var(--gold);
  padding-bottom: 18px;
  margin-bottom: 26px;
}
.cert-no {
  font-family: var(--font-serif);
  font-size: .78rem;
  letter-spacing: .34em;
  text-indent: .34em;
  color: var(--gold);
  margin: 0 0 10px;
}
.cert-title {
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 3.2vw, 1.85rem);
  letter-spacing: .4em;
  text-indent: .4em;
  font-weight: 600;
  color: var(--navy-900);
  margin: 0 0 8px;
}
.cert-en {
  font-size: .6rem;
  letter-spacing: .32em;
  text-indent: .32em;
  color: var(--ink-soft);
  margin: 0;
}

.cert-name-row {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr) 82px;
  gap: 30px;
  align-items: center;
  margin-bottom: 26px;
}
.cert-name-block { min-width: 0; }
/* 証明写真風の枠。
   行の高さに引き伸ばされないよう、寸法は明示して align-self も固定する */
.itv-photo {
  width: 132px;
  height: 176px;
  align-self: center;
  justify-self: start;
  flex: none;
  border-radius: 1px;
  overflow: hidden;
  background: linear-gradient(150deg, var(--blue-100), var(--blue-400));
  display: grid;
  place-items: center;
  color: rgba(255, 255, 255, .9);
  font-size: .58rem;
  letter-spacing: .16em;
  font-weight: 700;
  box-shadow:
    0 0 0 1px var(--gold),
    0 0 0 5px var(--cream),
    0 0 0 6px rgba(168, 135, 58, .35),
    0 4px 14px rgba(10, 37, 69, .18);
}
/* --zoom / --focus は写真ごとに HTML 側で微調整する（顔の大きさと位置） */
.itv-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(var(--zoom, 1.6));
  transform-origin: 50% var(--focus, 25%);
}
.cert-region {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: #fff;
  background: var(--red);
  padding: 3px 12px;
  border-radius: 2px;
  margin: 0 0 10px;
}
.cert-name {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3.8vw, 1.95rem);
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--navy-900);
  margin: 0 0 6px;
}
.cert-role { margin: 0; font-size: .8rem; color: var(--ink-soft); }

/* 取材待ちの項目 */
.cert-region.is-pending {
  background: none;
  color: var(--ink-soft);
  border: 1px dashed rgba(10, 37, 69, .3);
  padding: 2px 11px;
}
.cert-name.is-pending {
  color: rgba(10, 37, 69, .32);
  letter-spacing: .08em;
}
.cert-role.is-pending { color: rgba(10, 37, 69, .4); }

.cert-pending {
  text-align: center;
  padding: 26px 18px 6px;
  border-top: 1px solid rgba(10, 37, 69, .12);
}
.cert-pending-title {
  font-family: var(--font-serif);
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .26em;
  text-indent: .26em;
  color: var(--gold-dark);
  margin: 0 0 10px;
}
.cert-pending-text {
  margin: 0;
  font-size: .86rem;
  color: var(--ink-soft);
}

.cert-seal {
  width: 78px; height: 78px;
  justify-self: end;
  border: 2px solid var(--red);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-size: .74rem;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: .08em;
  text-align: center;
  color: var(--red);
  opacity: .8;
  transform: rotate(-9deg);
  box-shadow: inset 0 0 0 3px rgba(200, 16, 46, .13);
}

/* 折りたたみ時に見せる見出し + 要約 */
.cert-headline {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2.6vw, 1.4rem);
  font-weight: 600;
  line-height: 1.65;
  letter-spacing: .04em;
  color: var(--navy-800);
  margin: 0 0 14px;
  padding-top: 22px;
  border-top: 1px solid rgba(10, 37, 69, .12);
}
.cert-summary {
  margin: 0 0 24px;
  font-size: .91rem;
  color: var(--ink-soft);
}

/* 展開部 */
.itv-detail { display: none; }
.itv.is-open .itv-detail { display: block; }

.cert-fields {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 34px;
  margin: 0 0 30px;
  padding-top: 4px;
}
.cert-fields > div {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px dotted rgba(10, 37, 69, .24);
}
.cert-fields dt {
  font-size: .71rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--ink-soft);
}
.cert-fields dd { margin: 0; font-size: .9rem; font-weight: 600; color: var(--ink); }

.cert-quote {
  margin: 0 0 28px;
  padding: 24px 18px;
  text-align: center;
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 2.6vw, 1.4rem);
  line-height: 1.85;
  letter-spacing: .05em;
  color: var(--navy-800);
  border-top: 1px solid var(--gold);
  border-bottom: 1px solid var(--gold);
}
.cert-quote::before,
.cert-quote::after {
  color: var(--gold);
  font-size: 1.4em;
  line-height: 0;
  vertical-align: -.12em;
}
.cert-quote::before { content: "\300C"; }
.cert-quote::after  { content: "\300D"; }

.itv-body p { margin: 0 0 18px; font-size: .93rem; color: var(--ink-soft); }

.cert-issuer {
  margin: 24px 0 4px;
  padding-top: 16px;
  border-top: 1px solid rgba(10, 37, 69, .1);
  text-align: right;
  font-family: var(--font-serif);
  font-size: .76rem;
  letter-spacing: .12em;
  color: var(--ink-soft);
}

.itv-toggle {
  display: block;
  width: 100%;
  margin: 0;
  border: 1px solid var(--gold);
  background: rgba(168, 135, 58, .05);
  border-radius: 2px;
  padding: 13px 24px;
  font-size: .86rem;
  font-weight: 700;
  font-family: var(--font-serif);
  letter-spacing: .16em;
  color: var(--navy-800);
  cursor: pointer;
  transition: background .2s, color .2s;
}
.itv-toggle:hover {
  background: var(--navy-800);
  border-color: var(--navy-800);
  color: var(--cream);
}

/* ============================================================
   03. タイムテーブル
   ============================================================ */
.tt-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-bottom: 18px;
}
.lg {
  font-size: .78rem;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 2px;
}
.lg-p { background: rgba(200, 16, 46, .1);  color: var(--red-dark); }
.lg-c { background: rgba(27, 108, 168, .13); color: var(--blue-600); }
.lg-s { background: rgba(168, 135, 58, .16); color: var(--gold-dark); }
.lg-f { background: #eceff3; color: var(--ink-soft); }

.tt-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  margin-bottom: 52px;
}
.tt {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
}
.tt th, .tt td {
  border: 1px solid var(--line);
  padding: 13px 8px;
  text-align: center;
  font-size: .8rem;
}
.tt thead th {
  background: var(--navy-800);
  color: #fff;
  font-weight: 700;
  letter-spacing: .08em;
  border-color: var(--navy-700);
}
.tt tbody th {
  background: var(--bg-tint);
  font-size: .74rem;
  font-weight: 700;
  white-space: nowrap;
  color: var(--ink-soft);
}
.tt td { font-weight: 700; }
.tt td.p { background: rgba(200, 16, 46, .1);  color: var(--red-dark); }
.tt td.c { background: rgba(27, 108, 168, .13); color: var(--blue-600); }
.tt td.s { background: rgba(168, 135, 58, .16); color: var(--gold-dark); }
.tt td.f { background: #f7f9fb; color: var(--ink-soft); font-weight: 400; }

.day {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 38px 40px 32px;
}
.day-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  margin: 0 0 26px;
  letter-spacing: .04em;
}
.day-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0 0 0 8px;
  position: relative;
}
.day-list::before {
  content: "";
  position: absolute;
  left: 77px; top: 10px; bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--blue-400), var(--line));
}
.day-list li {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 40px;
  align-items: baseline;
  padding: 9px 0;
  position: relative;
}
.day-list li::before {
  content: "";
  position: absolute;
  left: 73px; top: 1.05em;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--red);
}
.day-time {
  font-family: var(--font-serif);
  font-size: .95rem;
  font-weight: 700;
  color: var(--navy-800);
  text-align: right;
}
.day-act { font-size: .9rem; color: var(--ink-soft); }

/* ============================================================
   04. Q&A
   ============================================================ */
.faq { display: grid; gap: 12px; }
.faq details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .2s;
}
.faq details[open] { border-color: var(--blue-400); }
.faq summary {
  cursor: pointer;
  padding: 20px 56px 20px 24px;
  font-weight: 700;
  font-size: .94rem;
  position: relative;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  position: absolute;
  right: 26px; top: 50%;
  width: 10px; height: 10px;
  border-right: 2px solid var(--red);
  border-bottom: 2px solid var(--red);
  transform: translateY(-70%) rotate(45deg);
  transition: transform .25s;
}
.faq details[open] summary::after { transform: translateY(-20%) rotate(-135deg); }
.faq details p {
  margin: 0;
  padding: 0 24px 22px;
  font-size: .9rem;
  color: var(--ink-soft);
}
.faq details p a { color: var(--blue-600); font-weight: 700; }

/* ============================================================
   05. 部の雰囲気
   ============================================================ */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 14px;
}
.ph-tile { margin: 0; }
.ph-img {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  background: linear-gradient(150deg, var(--blue-100), var(--blue-400));
  display: grid;
  place-items: center;
  color: rgba(255,255,255,.75);
  font-size: .68rem;
  letter-spacing: .22em;
  font-weight: 700;
}
.ph-tile figcaption {
  margin-top: 10px;
  font-size: .82rem;
  color: var(--ink-soft);
}

.essays {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.essay {
  background: #fff;
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  padding: 26px 24px;
}
.essay h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 10px;
  letter-spacing: .03em;
}
.essay p { margin: 0; font-size: .88rem; color: var(--ink-soft); }

/* ============================================================
   06. 保護者の方へ（別枠）
   ============================================================ */
.parents {
  background: var(--navy-900);
  padding: 90px 0;
}
.parents-box {
  background: var(--cream);
  border: 1px solid var(--gold);
  border-radius: var(--radius);
  padding: 56px 54px 50px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, .28);
}
.parents-head {
  text-align: center;
  max-width: 40em;
  margin: 0 auto 44px;
  padding-bottom: 32px;
  border-bottom: 3px double var(--gold);
}
.parents-badge {
  display: inline-block;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .28em;
  text-indent: .28em;
  color: #fff;
  background: var(--navy-800);
  padding: 6px 18px;
  border-radius: 2px;
  margin: 0 0 20px;
}
.parents-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.6vw, 2.3rem);
  font-weight: 600;
  letter-spacing: .1em;
  margin: 0 0 18px;
  color: var(--navy-900);
}
.parents-lead { margin: 0; font-size: .94rem; color: var(--ink-soft); }

.parents-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.pcard {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
}
.pcard h3 {
  font-size: 1rem;
  margin: 0 0 12px;
  line-height: 1.6;
  padding-left: 12px;
  border-left: 3px solid var(--red);
}
.pcard p { margin: 0 0 12px; font-size: .87rem; color: var(--ink-soft); }
.pcard p:last-child { margin-bottom: 0; }
.pcard-link {
  display: inline-block;
  margin-top: 4px;
  font-size: .84rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--navy-800);
  border-bottom: 1px solid var(--red);
  padding-bottom: 2px;
}
.pcard-link:hover { color: var(--red); }

/* ============================================================
   入部までの流れ + 連絡先
   ============================================================ */
.steps {
  list-style: none;
  margin: 0 0 60px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
  counter-reset: step;
}
.step {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 20px 24px;
  text-align: center;
}
.step-no {
  display: inline-grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--navy-800);
  color: #fff;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 14px;
}
.step h3 { margin: 0 0 10px; font-size: .98rem; }
.step p { margin: 0; font-size: .83rem; color: var(--ink-soft); text-align: left; }

.routes {
  background: var(--bg-tint);
  border-radius: var(--radius);
  padding: 40px 40px 32px;
  margin-bottom: 56px;
}
.routes-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 24px;
  letter-spacing: .04em;
}
.routes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 22px;
}
.route {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
}
.route h4 {
  margin: 0 0 8px;
  font-size: .94rem;
  color: var(--navy-800);
}
.route p { margin: 0; font-size: .84rem; color: var(--ink-soft); }

.contact-box {
  background: linear-gradient(150deg, var(--navy-900), var(--blue-600));
  color: #fff;
  border-radius: var(--radius);
  padding: 56px 48px 46px;
  text-align: center;
}
.contact-box h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3.2vw, 2rem);
  font-weight: 600;
  margin: 0 0 18px;
  letter-spacing: .04em;
}
.contact-box > p { margin: 0 0 34px; color: rgba(255,255,255,.86); font-size: .95rem; }
.contact-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 22px;
}
.contact-box .note { color: rgba(255,255,255,.6); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-900);
  color: rgba(255,255,255,.72);
  padding: 54px 0 40px;
}
.footer-inner { display: grid; gap: 26px; }
.footer-name { margin: 0 0 4px; color: #fff; font-weight: 700; font-size: .96rem; }
.footer-jp {
  margin: 0;
  font-size: .68rem;
  letter-spacing: .22em;
  color: var(--blue-400);
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.14);
}
.footer-nav a { text-decoration: none; font-size: .83rem; }
.footer-nav a:hover { color: #fff; }
.copyright { margin: 0; font-size: .73rem; color: rgba(255,255,255,.45); }

/* ---------- スマホ固定CTA ---------- */
.sticky-cta {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 90;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, .95);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--line);
  transform: translateY(110%);
  transition: transform .3s ease;
}
.sticky-cta.is-shown { transform: translateY(0); }
.sticky-btn {
  display: block;
  background: var(--red);
  color: #fff;
  text-align: center;
  text-decoration: none;
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .08em;
  padding: 15px;
  border-radius: var(--radius);
}
.sticky-btn:active { background: var(--red-dark); }

/* ---------- Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-bg .lane, .scroll-hint span { animation: none; }
  .btn:hover, .itv:hover { transform: none; }
  .sticky-cta { transition: none; }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1040px) {
  .nav { gap: 15px; }
  .nav a { font-size: .77rem; }
  .steps { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .coach { grid-template-columns: 1fr; gap: 34px; }
  .coach-photo { max-width: 280px; }
  .facts { grid-template-columns: 1fr; }
  .reasons { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .essays { grid-template-columns: 1fr; }
  .parents-grid { grid-template-columns: repeat(2, 1fr); }
  .routes-grid { grid-template-columns: 1fr; }
}

@media (max-width: 780px) {
  .sp-only { display: inline; }
  .container { width: min(100% - 36px, var(--wrap)); }

  body { padding-bottom: 78px; }

  .nav-toggle { display: flex; }
  .nav {
    position: fixed;
    inset: 68px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 8px 0 20px;
    transform: translateY(-125%);
    transition: transform .32s ease;
    box-shadow: 0 20px 40px rgba(6, 24, 47, .12);
  }
  .nav.is-open { transform: translateY(0); }
  .nav a { padding: 15px 28px; border-bottom: 1px solid var(--line); font-size: .88rem; }
  .nav a::after { display: none; }
  .nav .nav-cta { margin: 14px 28px 0; text-align: center; border-bottom: 0; }

  .sticky-cta { display: block; }

  .hero { padding: 74px 0 116px; }
  .section { padding: 68px 0; }
  .section-head { margin-bottom: 38px; }

  /* 証書 */
  .interviews { gap: 24px; }
  .cert-inner { margin: 7px; padding: 26px 20px 22px; }
  .cert-title { letter-spacing: .3em; text-indent: .3em; }
  .cert-name-row { grid-template-columns: 76px minmax(0, 1fr) 50px; gap: 16px; }
  .itv-photo {
    width: 76px;
    height: 101px;
    font-size: .48rem;
    letter-spacing: .1em;
    box-shadow:
      0 0 0 1px var(--gold),
      0 0 0 3px var(--cream),
      0 0 0 4px rgba(168, 135, 58, .35),
      0 3px 10px rgba(10, 37, 69, .18);
  }
  .cert-pending { padding: 20px 4px 4px; }
}

/* 極小幅では朱印を行から外し、氏名欄の横幅を確保する */
@media (max-width: 420px) {
  /* 朱印は氏名欄の下に回して、氏名の横幅を確保する */
  .cert-name-row {
    grid-template-columns: 76px minmax(0, 1fr);
    row-gap: 10px;
  }
  .cert-seal {
    grid-column: 2;
    justify-self: end;
  }
  .cert-name { font-size: 1.2rem; letter-spacing: .08em; }
  .cert-role { font-size: .74rem; }
  .cert-region { font-size: .62rem; }
  .cert-seal {
    width: 54px; height: 54px;
    font-size: .52rem;
    box-shadow: inset 0 0 0 2px rgba(200, 16, 46, .13);
  }
  .cert-region { font-size: .66rem; padding: 2px 9px; }
  .cert-fields { grid-template-columns: 1fr; }
  .cert-fields > div { grid-template-columns: 86px 1fr; }
  .cert-quote { padding: 20px 6px; }
  .cert-issuer { font-size: .7rem; }

  /* タイムテーブル */
  .day { padding: 28px 22px 24px; }
  .day-list { padding-left: 0; }
  .day-list::before { left: 61px; }
  .day-list li { grid-template-columns: 46px 1fr; gap: 32px; }
  .day-list li::before { left: 57px; }

  /* 雰囲気 */
  .gallery { grid-template-columns: repeat(2, 1fr); gap: 12px; }

  /* 保護者 */
  .parents { padding: 62px 0; }
  .parents-box { padding: 34px 22px 30px; }
  .parents-head { margin-bottom: 30px; padding-bottom: 24px; }
  .parents-grid { grid-template-columns: 1fr; gap: 16px; }

  /* 入部 */
  .steps { grid-template-columns: 1fr; gap: 12px; }
  .step {
    display: grid;
    grid-template-columns: 40px 1fr;
    gap: 6px 18px;
    text-align: left;
    padding: 22px 20px;
    align-items: center;
  }
  .step-no { margin-bottom: 0; }
  .step h3 { margin: 0; }
  .step p { grid-column: 2; }
  .routes { padding: 28px 22px 24px; }
  .contact-box { padding: 38px 22px 32px; }
  .contact-actions .btn, .hero-actions .btn { width: 100%; text-align: center; }
}