/* ============================================================================
   VET Academy — 獣医師向けEラーニングサイト専用スタイルシート
   ※セミナーサイト（seminar.css）とは完全に独立した新規ファイル。
   ============================================================================ */

:root {
  --acad-primary: #0f2942;       /* ネイビー */
  --acad-primary-dark: #081a2c;
  --acad-green: #145a45;         /* 深いグリーン */
  --acad-green-light: #e6efe9;
  --acad-accent: #ff7a30;        /* オレンジ（CTA） */
  --acad-accent-dark: #e0611c;
  --acad-blue: #2f6fed;          /* ブルー（サブアクセント） */
  --acad-bg: #f5f7f9;
  --acad-white: #ffffff;
  --acad-text: #1c2530;
  --acad-text-light: #667085;
  --acad-border: #e3e6ea;
  --acad-success: #1a7f52;
  --acad-danger: #d64545;
  --acad-warning: #b8860b;
  --acad-radius-sm: 8px;
  --acad-radius-md: 16px;
  --acad-radius-lg: 24px;
  --acad-shadow-sm: 0 2px 8px rgba(15, 41, 66, 0.06);
  --acad-shadow-md: 0 8px 28px rgba(15, 41, 66, 0.12);
  --acad-shadow-lg: 0 20px 48px rgba(15, 41, 66, 0.18);
  --acad-header-height: 72px;
}

.acad {
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  color: var(--acad-text);
  background: var(--acad-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.acad *, .acad *::before, .acad *::after { box-sizing: border-box; }
.acad img { max-width: 100%; display: block; }
.acad a { color: inherit; text-decoration: none; }
.acad ul, .acad ol { list-style: none; margin: 0; padding: 0; }
.acad button { font-family: inherit; }

.acad .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.acad .section { padding: 64px 0; }
.acad .section--bg { background: var(--acad-bg); }

.acad .section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.acad .section-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--acad-primary);
}

.acad .section-desc {
  font-size: 0.9375rem;
  color: var(--acad-text-light);
  margin-top: 6px;
}

.acad .section-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--acad-primary);
}

.acad .section-link svg { width: 16px; height: 16px; }

/* ---------------------------------------------------------------------------
   Buttons
   --------------------------------------------------------------------------- */
.acad .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--acad-radius-sm);
  font-size: 0.9375rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease, opacity 0.2s ease;
  white-space: nowrap;
}

.acad .btn-lg { padding: 16px 32px; font-size: 1rem; }
.acad .btn-sm { padding: 8px 16px; font-size: 0.8125rem; }

.acad .btn-accent {
  background: var(--acad-accent);
  color: var(--acad-white);
  box-shadow: 0 6px 20px rgba(255, 122, 48, 0.35);
}
.acad .btn-accent:hover { background: var(--acad-accent-dark); transform: translateY(-1px); }

.acad .btn-primary {
  background: var(--acad-primary);
  color: var(--acad-white);
}
.acad .btn-primary:hover { background: var(--acad-primary-dark); transform: translateY(-1px); }

.acad .btn-green {
  background: var(--acad-green);
  color: var(--acad-white);
}
.acad .btn-green:hover { opacity: 0.9; transform: translateY(-1px); }

.acad .btn-outline {
  background: transparent;
  color: var(--acad-white);
  border: 1.5px solid rgba(255, 255, 255, 0.6);
}
.acad .btn-outline:hover { background: rgba(255, 255, 255, 0.12); }

.acad .btn-outline-primary {
  background: transparent;
  color: var(--acad-primary);
  border: 1.5px solid var(--acad-primary);
}
.acad .btn-outline-primary:hover { background: var(--acad-primary); color: var(--acad-white); }

.acad .btn-white {
  background: var(--acad-white);
  color: var(--acad-primary);
}
.acad .btn-white:hover { background: var(--acad-green-light); }

.acad .btn-block { width: 100%; }
.acad .btn[disabled] { opacity: 0.5; cursor: not-allowed; }

/* ---------------------------------------------------------------------------
   ダミーモード バナー（確認用プレビューモード）
   --------------------------------------------------------------------------- */
.acad .acad-dummy-banner {
  position: relative;
  z-index: 1001;
  background: var(--acad-accent);
  color: #fff;
}
.acad .acad-dummy-banner .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 24px;
  font-size: 0.8125rem;
  font-weight: 600;
  text-align: center;
}
.acad .acad-dummy-banner a {
  color: #fff;
  text-decoration: underline;
  white-space: nowrap;
}
.acad .acad-dummy-banner a:hover { opacity: 0.85; }

/* ---------------------------------------------------------------------------
   Header
   --------------------------------------------------------------------------- */
.acad .acad-header {
  position: relative;
  z-index: 1000;
  background: var(--acad-primary);
  height: var(--acad-header-height);
}

.acad .acad-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 0 24px;
  max-width: 1400px;
  margin: 0 auto;
}

.acad .acad-menu-btn {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--acad-white);
  cursor: pointer;
  padding: 0;
}
.acad .acad-menu-btn svg { width: 26px; height: 26px; }
.acad .acad-menu-btn span { font-size: 9px; font-weight: 700; margin-top: 2px; letter-spacing: 0.05em; }

.acad .acad-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.acad .acad-logo__icon {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--acad-green) 0%, var(--acad-primary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--acad-white);
  flex-shrink: 0;
}
.acad .acad-logo__icon svg { width: 20px; height: 20px; }

.acad .acad-logo__text {
  color: var(--acad-white);
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: 0.01em;
  line-height: 1.2;
}
.acad .acad-logo__tagline {
  display: block;
  color: rgba(255, 255, 255, 0.55);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.03em;
}

.acad .acad-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.acad .acad-nav a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.acad .acad-nav a:hover,
.acad .acad-nav a.is-active {
  color: var(--acad-white);
  border-bottom-color: var(--acad-accent);
}

.acad .acad-header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-left: auto;
}

.acad .acad-icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: var(--acad-white);
  border: none;
  cursor: pointer;
  position: relative;
}
.acad .acad-icon-btn:hover { background: rgba(255, 255, 255, 0.18); }
.acad .acad-icon-btn svg { width: 18px; height: 18px; }

.acad .acad-search {
  position: relative;
}

.acad .acad-search__form {
  position: absolute;
  top: calc(100% + 14px);
  right: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  width: 340px;
  max-width: calc(100vw - 32px);
  padding: 10px;
  background: var(--acad-white);
  border-radius: var(--acad-radius-sm);
  box-shadow: var(--acad-shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
}
.acad .acad-search.is-open .acad-search__form {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.acad .acad-search__input {
  flex: 1;
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-sm);
  font-size: 0.875rem;
  background: var(--acad-bg);
  color: var(--acad-text);
}
.acad .acad-search__input:focus { outline: none; border-color: var(--acad-primary); }
.acad .acad-search__submit {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border: none;
  border-radius: var(--acad-radius-sm);
  background: var(--acad-primary);
  color: var(--acad-white);
  cursor: pointer;
}
.acad .acad-search__submit svg { width: 18px; height: 18px; }

.acad .acad-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--acad-white);
  cursor: pointer;
  border: none;
}
.acad .acad-user__avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--acad-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--acad-white);
  overflow: hidden;
  flex-shrink: 0;
}
.acad .acad-user__avatar img { width: 100%; height: 100%; object-fit: cover; }
.acad .acad-user__name { font-size: 0.8125rem; font-weight: 600; }

.acad .acad-login-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 20px;
  border-radius: var(--acad-radius-sm);
  background: var(--acad-accent);
  color: var(--acad-white);
  font-size: 0.8125rem;
  font-weight: 700;
  white-space: nowrap;
}
.acad .acad-login-btn:hover { background: var(--acad-accent-dark); }
.acad .acad-login-btn.is-logged-in { background: rgba(255, 255, 255, 0.1); }
.acad .acad-login-btn.is-logged-in:hover { background: rgba(255, 255, 255, 0.2); }
.acad .acad-login-btn--ghost { background: transparent; border: 1.5px solid rgba(255, 255, 255, 0.5); }
.acad .acad-login-btn--ghost:hover { background: rgba(255, 255, 255, 0.1); }

/* mobile nav drawer */
.acad .acad-nav-drawer {
  display: none;
  position: fixed;
  top: var(--acad-header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--acad-white);
  z-index: 999;
  padding: 20px;
  overflow-y: auto;
}
.acad .acad-nav-drawer.is-open { display: block; }
.acad .acad-nav-drawer a {
  display: block;
  padding: 16px 4px;
  border-bottom: 1px solid var(--acad-border);
  font-weight: 700;
  color: var(--acad-primary);
  font-size: 1rem;
}

/* ---------------------------------------------------------------------------
   Hero (ログイン前トップ)
   --------------------------------------------------------------------------- */
.acad .acad-hero {
  position: relative;
  background-image:
    linear-gradient(90deg, rgba(7, 22, 38, 0.88) 0%, rgba(7, 22, 38, 0.74) 32%, rgba(7, 22, 38, 0.38) 62%, rgba(7, 22, 38, 0.12) 100%),
    linear-gradient(0deg, rgba(7, 22, 38, 0.55) 0%, rgba(7, 22, 38, 0) 45%),
    url('https://g-lib.ltd/imageurl/images/image_20260706005212.png');
  background-size: cover, cover, cover;
  background-position: center, center, center;
  background-repeat: no-repeat, no-repeat, no-repeat;
  padding: 88px 0 96px;
  overflow: hidden;
}

.acad .acad-hero::after {
  content: '';
  position: absolute;
  right: -10%;
  bottom: -30%;
  width: 640px;
  height: 640px;
  background: radial-gradient(circle, rgba(255, 122, 48, 0.18), transparent 70%);
  pointer-events: none;
}

.acad .acad-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.acad .acad-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.8125rem;
  font-weight: 700;
  margin-bottom: 20px;
}
.acad .acad-hero__eyebrow svg { width: 14px; height: 14px; }

.acad .acad-hero__title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--acad-white);
  line-height: 1.5;
  margin-bottom: 22px;
  letter-spacing: 0.01em;
}
.acad .acad-hero__title em {
  font-style: normal;
  color: var(--acad-accent);
}

.acad .acad-hero__desc {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.9;
  margin-bottom: 32px;
}

.acad .acad-hero__points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 36px;
}

.acad .acad-hero__point {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--acad-radius-sm);
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.8125rem;
  font-weight: 600;
}
.acad .acad-hero__point svg { width: 18px; height: 18px; color: var(--acad-accent); flex-shrink: 0; }

.acad .acad-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.acad .acad-hero__stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  max-width: 900px;
}
.acad .acad-hero__stat-num {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--acad-white);
}
.acad .acad-hero__stat-label {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 4px;
}

/* ---------------------------------------------------------------------------
   Features bar
   --------------------------------------------------------------------------- */
.acad .acad-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: -48px;
  position: relative;
  z-index: 2;
}

.acad .acad-feature-card {
  background: var(--acad-white);
  border-radius: var(--acad-radius-md);
  padding: 26px 22px;
  box-shadow: var(--acad-shadow-md);
  text-align: left;
}
.acad .acad-feature-card__icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--acad-green-light);
  color: var(--acad-green);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}
.acad .acad-feature-card__icon svg { width: 22px; height: 22px; }
.acad .acad-feature-card__title { font-size: 1rem; font-weight: 700; margin-bottom: 6px; color: var(--acad-primary); }
.acad .acad-feature-card__desc { font-size: 0.8125rem; color: var(--acad-text-light); line-height: 1.7; }

/* ---------------------------------------------------------------------------
   Course Card
   --------------------------------------------------------------------------- */
.acad .course-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.acad .course-card {
  display: flex;
  flex-direction: column;
  background: var(--acad-white);
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-md);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
  height: 100%;
}
.acad .course-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--acad-shadow-md);
  border-color: transparent;
}

.acad .course-card__thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--acad-bg);
  overflow: hidden;
}
.acad .course-card__thumb img { width: 100%; height: 100%; object-fit: cover; }

.acad .course-card__badge {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--acad-white);
  z-index: 2;
}
.acad .course-card__badge--new { background: var(--acad-blue); }
.acad .course-card__badge--popular { background: var(--acad-accent); }
.acad .course-card__badge--recommend { background: var(--acad-green); }

.acad .course-card__duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  padding: 3px 8px;
  border-radius: 5px;
  background: rgba(0, 0, 0, 0.65);
  color: var(--acad-white);
  font-size: 0.6875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}
.acad .course-card__duration svg { width: 11px; height: 11px; }

.acad .course-card__body {
  padding: 16px 16px 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.acad .course-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}
.acad .course-card__tag {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--acad-green);
  background: var(--acad-green-light);
  padding: 3px 9px;
  border-radius: 5px;
}

.acad .course-card__title {
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
  color: var(--acad-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.acad .course-card__instructor {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.acad .course-card__instructor-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--acad-bg);
  flex-shrink: 0;
}
.acad .course-card__instructor-avatar img { width: 100%; height: 100%; object-fit: cover; }
.acad .course-card__instructor-name { font-size: 0.75rem; color: var(--acad-text-light); font-weight: 600; }

.acad .course-card__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.75rem;
  color: var(--acad-text-light);
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.acad .course-card__meta span { display: flex; align-items: center; gap: 4px; }
.acad .course-card__meta svg { width: 13px; height: 13px; }

.acad .course-card__footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--acad-border);
}

.acad .course-card__price {
  font-size: 1rem;
  font-weight: 700;
  color: var(--acad-primary);
}
.acad .course-card__price small { font-size: 0.6875rem; font-weight: 500; margin-left: 2px; }
.acad .course-card__price--free { color: var(--acad-green); }

.acad .course-card__progress-wrap {
  padding: 0 16px 14px;
}
.acad .course-card__progress-bar {
  height: 6px;
  background: var(--acad-border);
  border-radius: 999px;
  overflow: hidden;
}
.acad .course-card__progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--acad-green), var(--acad-blue));
  border-radius: 999px;
}
.acad .course-card__progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.6875rem;
  color: var(--acad-text-light);
  margin-top: 6px;
}

/* list slider row (top page) */
.acad .course-row {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  padding-bottom: 8px;
  scroll-snap-type: x mandatory;
}
.acad .course-row .course-card { flex: 0 0 280px; scroll-snap-align: start; }
.acad .course-row::-webkit-scrollbar { height: 6px; }
.acad .course-row::-webkit-scrollbar-thumb { background: var(--acad-border); border-radius: 999px; }

/* ---------------------------------------------------------------------------
   Instructor highlight
   --------------------------------------------------------------------------- */
.acad .instructor-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.acad .instructor-chip {
  text-align: center;
  padding: 20px 12px;
  border-radius: var(--acad-radius-md);
  background: var(--acad-white);
  border: 1px solid var(--acad-border);
  transition: box-shadow 0.2s, transform 0.2s;
}
.acad .instructor-chip:hover { box-shadow: var(--acad-shadow-sm); transform: translateY(-2px); }
.acad .instructor-chip__avatar {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  margin: 0 auto 12px;
  overflow: hidden;
  background: var(--acad-bg);
}
.acad .instructor-chip__avatar img { width: 100%; height: 100%; object-fit: cover; }
.acad .instructor-chip__name { font-size: 0.875rem; font-weight: 700; margin-bottom: 2px; }
.acad .instructor-chip__title { font-size: 0.6875rem; color: var(--acad-text-light); }

/* ---------------------------------------------------------------------------
   講師一覧ページ
   --------------------------------------------------------------------------- */
.acad .instructor-search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 32px;
}
.acad .instructor-search-bar__field {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-sm);
  background: var(--acad-white);
}
.acad .instructor-search-bar__field svg { width: 16px; height: 16px; color: var(--acad-text-light); flex-shrink: 0; }
.acad .instructor-search-bar__field input { flex: 1; border: none; padding: 12px 0; font-size: 0.875rem; background: transparent; }
.acad .instructor-search-bar__field input:focus { outline: none; }

.acad .instructor-list-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.acad .instructor-list-card {
  background: var(--acad-white);
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-md);
  padding: 28px 22px;
  text-align: center;
  transition: box-shadow 0.2s, transform 0.2s;
}
.acad .instructor-list-card:hover { box-shadow: var(--acad-shadow-md); transform: translateY(-3px); }
.acad .instructor-list-card__avatar {
  width: 92px;
  height: 92px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 16px;
  background: var(--acad-bg);
}
.acad .instructor-list-card__avatar img { width: 100%; height: 100%; object-fit: cover; }
.acad .instructor-list-card__name { font-size: 1.0625rem; font-weight: 700; margin-bottom: 4px; }
.acad .instructor-list-card__title { font-size: 0.8125rem; color: var(--acad-green); font-weight: 600; margin-bottom: 12px; }
.acad .instructor-list-card__desc {
  font-size: 0.8125rem;
  color: var(--acad-text-light);
  line-height: 1.7;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.acad .instructor-list-card__count {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--acad-primary);
  padding-top: 12px;
  border-top: 1px solid var(--acad-border);
}

/* ---------------------------------------------------------------------------
   CTA band
   --------------------------------------------------------------------------- */
.acad .acad-cta-band {
  background: linear-gradient(120deg, var(--acad-green) 0%, var(--acad-primary) 100%);
  border-radius: var(--acad-radius-lg);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.acad .acad-cta-band__title { font-size: 1.375rem; font-weight: 700; color: var(--acad-white); margin-bottom: 8px; }
.acad .acad-cta-band__desc { font-size: 0.875rem; color: rgba(255, 255, 255, 0.8); }

/* ---------------------------------------------------------------------------
   Dashboard hero (ログイン後トップ / マイページ)
   --------------------------------------------------------------------------- */
.acad .dash-hero {
  background: var(--acad-bg);
  padding: 40px 0;
  border-bottom: 1px solid var(--acad-border);
}
.acad .dash-hero__greeting { font-size: 1.375rem; font-weight: 700; color: var(--acad-primary); margin-bottom: 4px; }
.acad .dash-hero__sub { font-size: 0.875rem; color: var(--acad-text-light); }

.acad .continue-card {
  display: flex;
  gap: 24px;
  background: var(--acad-white);
  border-radius: var(--acad-radius-md);
  box-shadow: var(--acad-shadow-sm);
  padding: 20px;
  margin-top: 24px;
  align-items: center;
}
.acad .continue-card__thumb {
  width: 220px;
  aspect-ratio: 16/9;
  border-radius: var(--acad-radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
  background: var(--acad-bg);
}
.acad .continue-card__thumb img { width: 100%; height: 100%; object-fit: cover; }
.acad .continue-card__play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 41, 66, 0.25);
  color: var(--acad-white);
}
.acad .continue-card__play svg { width: 36px; height: 36px; }
.acad .continue-card__body { flex: 1; min-width: 0; }
.acad .continue-card__label { font-size: 0.75rem; font-weight: 700; color: var(--acad-accent); margin-bottom: 6px; }
.acad .continue-card__title { font-size: 1.0625rem; font-weight: 700; margin-bottom: 8px; }
.acad .continue-card__next { font-size: 0.8125rem; color: var(--acad-text-light); margin-bottom: 12px; }
.acad .continue-card__progress { display: flex; align-items: center; gap: 12px; }
.acad .continue-card__progress-bar { flex: 1; height: 8px; border-radius: 999px; background: var(--acad-border); overflow: hidden; }
.acad .continue-card__progress-fill { height: 100%; background: linear-gradient(90deg, var(--acad-green), var(--acad-blue)); }
.acad .continue-card__progress-pct { font-size: 0.8125rem; font-weight: 700; color: var(--acad-primary); flex-shrink: 0; }

/* Dashboard stat cards */
.acad .dash-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 24px 0 40px;
}
.acad .dash-stat {
  background: var(--acad-white);
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.acad .dash-stat__icon {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.acad .dash-stat__icon svg { width: 20px; height: 20px; }
.acad .dash-stat__icon--green { background: var(--acad-green-light); color: var(--acad-green); }
.acad .dash-stat__icon--blue { background: #e8f0fe; color: var(--acad-blue); }
.acad .dash-stat__icon--orange { background: #fff1e8; color: var(--acad-accent); }
.acad .dash-stat__icon--navy { background: #e9edf2; color: var(--acad-primary); }
.acad .dash-stat__num { font-size: 1.375rem; font-weight: 700; color: var(--acad-primary); line-height: 1; }
.acad .dash-stat__label { font-size: 0.75rem; color: var(--acad-text-light); margin-top: 4px; }

.acad .dash-tabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--acad-border);
  margin-bottom: 24px;
  overflow-x: auto;
}
.acad .dash-tab {
  padding: 12px 18px;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--acad-text-light);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  cursor: pointer;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
}
.acad .dash-tab.is-active,
.acad .dash-tab:hover { color: var(--acad-primary); border-bottom-color: var(--acad-primary); }
.acad .dash-tab-panel { display: none; }
.acad .dash-tab-panel.is-active { display: block; }

.acad .dash-list-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--acad-border);
}
.acad .dash-list-row:last-child { border-bottom: none; }
.acad .dash-list-row__thumb {
  width: 96px;
  aspect-ratio: 16/9;
  border-radius: var(--acad-radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--acad-bg);
}
.acad .dash-list-row__thumb img { width: 100%; height: 100%; object-fit: cover; }
.acad .dash-list-row__body { flex: 1; min-width: 0; }
.acad .dash-list-row__title { font-size: 0.9375rem; font-weight: 700; margin-bottom: 4px; }
.acad .dash-list-row__meta { font-size: 0.75rem; color: var(--acad-text-light); }
.acad .dash-list-row__action { flex-shrink: 0; }

.acad .empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--acad-text-light);
  font-size: 0.9375rem;
}
.acad .empty-state svg { width: 42px; height: 42px; color: var(--acad-border); margin: 0 auto 14px; }

/* ---------------------------------------------------------------------------
   講座一覧ページ（フィルター＋グリッド）
   --------------------------------------------------------------------------- */
.acad .list-page {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
  align-items: start;
}

.acad .filter-sidebar {
  background: var(--acad-white);
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-md);
  padding: 4px 20px 20px;
  position: sticky;
  top: 96px;
}

.acad .filter-group {
  border-bottom: 1px solid var(--acad-border);
  padding: 18px 0;
}
.acad .filter-group:last-child { border-bottom: none; }

.acad .filter-group__title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--acad-primary);
  cursor: pointer;
  user-select: none;
}
.acad .filter-group__title svg { width: 16px; height: 16px; transition: transform 0.2s; }
.acad .filter-group.is-collapsed .filter-group__title svg { transform: rotate(-90deg); }
.acad .filter-group.is-collapsed .filter-group__body { display: none; }

.acad .filter-group__body {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  max-height: 240px;
  overflow-y: auto;
  padding-right: 4px;
}

.acad .filter-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--acad-text);
  cursor: pointer;
}
.acad .filter-check input { accent-color: var(--acad-primary); width: 15px; height: 15px; flex-shrink: 0; }
.acad .filter-check span { flex: 1; }
.acad .filter-check small { color: var(--acad-text-light); }

.acad .filter-search-instructor {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-sm);
  font-size: 0.8125rem;
  margin-bottom: 10px;
}

.acad .filter-clear {
  display: block;
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--acad-text-light);
  padding: 10px;
  border-top: 1px solid var(--acad-border);
  margin-top: 4px;
}
.acad .filter-clear:hover { color: var(--acad-danger); }

.acad .list-main__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}
.acad .list-main__count { font-size: 0.875rem; color: var(--acad-text-light); }
.acad .list-main__count strong { color: var(--acad-primary); font-size: 1.0625rem; }

.acad .list-sort {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--acad-text-light);
}
.acad .list-sort select {
  padding: 8px 12px;
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-sm);
  font-size: 0.8125rem;
  background: var(--acad-white);
}

.acad .active-filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}
.acad .active-filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px 6px 12px;
  border-radius: 999px;
  background: var(--acad-green-light);
  color: var(--acad-green);
  font-size: 0.75rem;
  font-weight: 700;
}
.acad .active-filter-chip button {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  display: flex;
  padding: 0;
}
.acad .active-filter-chip svg { width: 12px; height: 12px; }

/* ---------------------------------------------------------------------------
   講座詳細（販売ページ）
   --------------------------------------------------------------------------- */
.acad .course-hero {
  background: var(--acad-primary);
  padding: 40px 0 56px;
}
.acad .course-hero__breadcrumb { font-size: 0.75rem; color: rgba(255, 255, 255, 0.55); margin-bottom: 16px; }
.acad .course-hero__breadcrumb a { color: rgba(255, 255, 255, 0.75); }
.acad .course-hero__grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; align-items: start; }
.acad .course-hero__tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.acad .course-hero__tags span {
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.12);
  color: var(--acad-white);
}
.acad .course-hero__title { font-size: 1.75rem; font-weight: 700; color: var(--acad-white); line-height: 1.5; margin-bottom: 16px; }
.acad .course-hero__desc { font-size: 0.9375rem; color: rgba(255, 255, 255, 0.75); line-height: 1.9; margin-bottom: 20px; }
.acad .course-hero__meta { display: flex; gap: 20px; flex-wrap: wrap; }
.acad .course-hero__meta-item { display: flex; align-items: center; gap: 6px; color: rgba(255, 255, 255, 0.85); font-size: 0.8125rem; }
.acad .course-hero__meta-item svg { width: 16px; height: 16px; color: var(--acad-accent); }

.acad .course-hero__instructor {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}
.acad .course-hero__instructor-avatar { width: 44px; height: 44px; border-radius: 50%; overflow: hidden; background: var(--acad-bg); flex-shrink: 0; }
.acad .course-hero__instructor-avatar img { width: 100%; height: 100%; object-fit: cover; }
.acad .course-hero__instructor-name { color: var(--acad-white); font-weight: 700; font-size: 0.9375rem; }
.acad .course-hero__instructor-title { color: rgba(255, 255, 255, 0.6); font-size: 0.75rem; }

.acad .buy-card {
  background: var(--acad-white);
  border-radius: var(--acad-radius-md);
  box-shadow: var(--acad-shadow-lg);
  padding: 24px;
}
.acad .buy-card__thumb { border-radius: var(--acad-radius-sm); overflow: hidden; margin-bottom: 18px; aspect-ratio: 16/9; background: var(--acad-bg); }
.acad .buy-card__thumb img { width: 100%; height: 100%; object-fit: cover; }
.acad .buy-card__price { font-size: 1.75rem; font-weight: 700; color: var(--acad-primary); margin-bottom: 4px; }
.acad .buy-card__price small { font-size: 0.8125rem; font-weight: 500; color: var(--acad-text-light); }
.acad .buy-card__price--free { color: var(--acad-green); }
.acad .buy-card__note { font-size: 0.75rem; color: var(--acad-text-light); margin-bottom: 18px; }
.acad .buy-card__list { display: flex; flex-direction: column; gap: 10px; margin: 18px 0; }
.acad .buy-card__list li { display: flex; align-items: center; gap: 8px; font-size: 0.8125rem; color: var(--acad-text); }
.acad .buy-card__list svg { width: 16px; height: 16px; color: var(--acad-green); flex-shrink: 0; }
.acad .buy-card__owned {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px;
  border-radius: var(--acad-radius-sm);
  background: var(--acad-green-light);
  color: var(--acad-green);
  font-weight: 700;
  font-size: 0.9375rem;
}
.acad .buy-card__owned svg { width: 18px; height: 18px; }

.acad .course-body {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 40px;
  padding: 48px 0;
  align-items: start;
}

.acad .course-tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--acad-border); margin-bottom: 24px; }
.acad .course-tab {
  padding: 12px 4px;
  margin-right: 24px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--acad-text-light);
  border-bottom: 2px solid transparent;
  cursor: pointer;
  background: none;
  border-top: none; border-left: none; border-right: none;
}
.acad .course-tab.is-active, .acad .course-tab:hover { color: var(--acad-primary); border-bottom-color: var(--acad-accent); }
.acad .course-tab-panel { display: none; }
.acad .course-tab-panel.is-active { display: block; }

.acad .curriculum-list { display: flex; flex-direction: column; gap: 10px; }
.acad .curriculum-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-sm);
}
.acad .curriculum-item__num {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--acad-bg);
  color: var(--acad-primary);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.acad .curriculum-item__title { flex: 1; font-size: 0.875rem; font-weight: 600; }
.acad .curriculum-item__duration { font-size: 0.75rem; color: var(--acad-text-light); flex-shrink: 0; }
.acad .curriculum-item__lock { color: var(--acad-text-light); flex-shrink: 0; }
.acad .curriculum-item__lock svg { width: 16px; height: 16px; }

.acad .instructor-bio { display: flex; gap: 18px; padding: 22px; background: var(--acad-bg); border-radius: var(--acad-radius-md); }
.acad .instructor-bio__avatar { width: 76px; height: 76px; border-radius: 50%; overflow: hidden; flex-shrink: 0; background: var(--acad-white); }
.acad .instructor-bio__avatar img { width: 100%; height: 100%; object-fit: cover; }
.acad .instructor-bio__name { font-size: 1rem; font-weight: 700; margin-bottom: 2px; }
.acad .instructor-bio__title { font-size: 0.8125rem; color: var(--acad-green); font-weight: 600; margin-bottom: 10px; }
.acad .instructor-bio__desc { font-size: 0.8438rem; color: var(--acad-text-light); line-height: 1.8; }

.acad .related-course-list { display: flex; flex-direction: column; gap: 14px; }
.acad .related-course-item { display: flex; gap: 12px; }
.acad .related-course-item__thumb { width: 96px; aspect-ratio: 16/9; border-radius: var(--acad-radius-sm); overflow: hidden; flex-shrink: 0; background: var(--acad-bg); }
.acad .related-course-item__thumb img { width: 100%; height: 100%; object-fit: cover; }
.acad .related-course-item__title { font-size: 0.8125rem; font-weight: 700; line-height: 1.5; margin-bottom: 4px; }
.acad .related-course-item__meta { font-size: 0.6875rem; color: var(--acad-text-light); }

/* ---------------------------------------------------------------------------
   動画プレイヤー（学習画面）
   --------------------------------------------------------------------------- */
.acad .learn-header {
  background: var(--acad-white);
  border-bottom: 1px solid var(--acad-border);
  padding: 14px 0;
}
.acad .learn-breadcrumb { font-size: 0.75rem; color: var(--acad-text-light); }
.acad .learn-breadcrumb a { color: var(--acad-text-light); }
.acad .learn-breadcrumb span { color: var(--acad-primary); font-weight: 600; }

.acad .learn-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 28px;
  padding: 24px 0 56px;
  align-items: start;
}

.acad .player-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--acad-radius-md);
  overflow: hidden;
}
.acad .player-wrap iframe,
.acad .player-wrap video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}
.acad .player-locked {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: linear-gradient(135deg, var(--acad-primary), #071626);
  color: var(--acad-white);
  text-align: center;
  padding: 20px;
}
.acad .player-locked svg { width: 40px; height: 40px; color: var(--acad-accent); }
.acad .player-locked p { font-size: 0.9375rem; color: rgba(255, 255, 255, 0.8); max-width: 320px; }

.acad .player-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 2px;
  flex-wrap: wrap;
}
.acad .player-toolbar__left { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.acad .player-toolbar select {
  padding: 7px 10px;
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-sm);
  font-size: 0.8125rem;
  background: var(--acad-white);
}
.acad .player-toolbar__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--acad-radius-sm);
  border: 1px solid var(--acad-border);
  background: var(--acad-white);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--acad-text);
  cursor: pointer;
}
.acad .player-toolbar__btn:hover { border-color: var(--acad-primary); color: var(--acad-primary); }
.acad .player-toolbar__btn svg { width: 15px; height: 15px; }
.acad .player-toolbar__btn.is-active { background: var(--acad-green-light); color: var(--acad-green); border-color: var(--acad-green); }

.acad .course-title-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin: 8px 0 18px; }
.acad .course-title-row h1 { font-size: 1.375rem; font-weight: 700; color: var(--acad-primary); }
.acad .course-title-row__meta { font-size: 0.8125rem; color: var(--acad-text-light); margin-top: 6px; display: flex; gap: 14px; flex-wrap: wrap; }
.acad .course-title-row__meta span { display: inline-flex; align-items: center; gap: 4px; }
.acad .course-title-row__meta svg { width: 14px; height: 14px; }
.acad .course-title-row__progress { flex-shrink: 0; text-align: right; }
.acad .course-title-row__progress-num { font-size: 1.25rem; font-weight: 700; color: var(--acad-green); }
.acad .course-title-row__progress-label { font-size: 0.6875rem; color: var(--acad-text-light); }

.acad .learn-info-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
@media screen and (max-width: 860px) {
  .acad .learn-info-row { grid-template-columns: 1fr; }
}

.acad .instructor-mini-card,
.acad .materials-mini-card {
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-md);
  padding: 18px;
  background: var(--acad-white);
}

.acad .instructor-mini-card { display: flex; gap: 14px; }
.acad .instructor-mini-card__avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--acad-bg);
}
.acad .instructor-mini-card__avatar img { width: 100%; height: 100%; object-fit: cover; }
.acad .instructor-mini-card__body { flex: 1; min-width: 0; }
.acad .instructor-mini-card__name { font-size: 0.9375rem; font-weight: 700; color: var(--acad-primary); }
.acad .instructor-mini-card__title { font-size: 0.75rem; color: var(--acad-green); font-weight: 600; margin-top: 2px; }
.acad .instructor-mini-card__desc { font-size: 0.8125rem; color: var(--acad-text-light); line-height: 1.7; margin-top: 8px; }
.acad .instructor-mini-card__link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 10px;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--acad-primary);
}
.acad .instructor-mini-card__link svg { width: 14px; height: 14px; }

.acad .materials-mini-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}
.acad .materials-mini-card__title { font-size: 0.9375rem; font-weight: 700; color: var(--acad-primary); }
.acad .materials-mini-card__all {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--acad-green);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.acad .materials-mini-card__all:hover { text-decoration: underline; }
.acad .material-list--compact .material-item { padding: 10px 12px; }
.acad .material-list--compact .material-item svg:first-child { width: 18px; height: 18px; }
.acad .empty-state--compact { padding: 12px 0; font-size: 0.8125rem; text-align: left; }
.acad .empty-state--compact svg { display: none; }

.acad .materials-chapter-group { margin-bottom: 24px; }
.acad .materials-chapter-group:last-child { margin-bottom: 0; }
.acad .materials-chapter-group__title {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--acad-primary);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--acad-border);
}

.acad .curriculum-item__materials {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--acad-green);
  background: var(--acad-green-light);
  padding: 3px 8px;
  border-radius: 999px;
  flex-shrink: 0;
}
.acad .curriculum-item__materials svg { width: 12px; height: 12px; }

.acad .learn-tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--acad-border); margin-bottom: 20px; }
.acad .learn-tab {
  padding: 10px 4px;
  margin-right: 22px;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--acad-text-light);
  border-bottom: 2px solid transparent;
  cursor: pointer;
  background: none; border: none;
}
.acad .learn-tab.is-active, .acad .learn-tab:hover { color: var(--acad-primary); border-bottom-color: var(--acad-accent); }
.acad .learn-tab-panel { display: none; }
.acad .learn-tab-panel.is-active { display: block; }

.acad .material-list { display: flex; flex-direction: column; gap: 10px; }
.acad .material-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-sm);
}
.acad .material-item svg { width: 22px; height: 22px; color: var(--acad-danger); flex-shrink: 0; }
.acad .material-item__body { flex: 1; }
.acad .material-item__name { font-size: 0.875rem; font-weight: 600; }
.acad .material-item__size { font-size: 0.75rem; color: var(--acad-text-light); }

.acad .note-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 16px; }
.acad .note-item { padding: 14px; border: 1px solid var(--acad-border); border-radius: var(--acad-radius-sm); background: var(--acad-bg); }
.acad .note-item__time { display: inline-block; font-size: 0.75rem; font-weight: 700; color: var(--acad-primary); background: var(--acad-white); padding: 2px 8px; border-radius: 5px; margin-bottom: 8px; cursor: pointer; }
.acad .note-item__text { font-size: 0.875rem; color: var(--acad-text); line-height: 1.7; }
.acad .note-form { display: flex; gap: 8px; }
.acad .note-form textarea {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-sm);
  font-size: 0.875rem;
  font-family: inherit;
  resize: vertical;
  min-height: 48px;
}

/* sidebar (learn) */
.acad .learn-side { display: flex; flex-direction: column; gap: 20px; position: sticky; top: 96px; }
.acad .side-card { background: var(--acad-white); border: 1px solid var(--acad-border); border-radius: var(--acad-radius-md); padding: 20px; margin-bottom: 16px; }
.acad .side-card:last-child { margin-bottom: 0; }
.acad .side-card__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.acad .side-card__title { font-size: 0.9375rem; font-weight: 700; color: var(--acad-primary); margin-bottom: 0; }
.acad .side-card > .side-card__title { margin-bottom: 16px; }
.acad .side-card__head .side-card__title { margin-bottom: 0; }
.acad .side-card__more { font-size: 0.75rem; font-weight: 600; color: var(--acad-blue); white-space: nowrap; }
.acad .side-card__more:hover { text-decoration: underline; }

.acad .progress-ring-wrap { display: flex; align-items: center; gap: 16px; }
.acad .progress-ring { flex-shrink: 0; }
.acad .progress-ring__pct { font-size: 1.125rem; font-weight: 700; }
.acad .progress-ring-info__label { font-size: 0.75rem; color: var(--acad-text-light); margin-bottom: 4px; }
.acad .progress-ring-info__next { font-size: 0.8125rem; font-weight: 600; color: var(--acad-primary); }

.acad .chapter-list { display: flex; flex-direction: column; gap: 4px; max-height: 480px; overflow-y: auto; }
.acad .chapter-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 8px;
  border-radius: var(--acad-radius-sm);
  cursor: pointer;
  font-size: 0.8125rem;
}
.acad .chapter-item:hover { background: var(--acad-bg); }
.acad .chapter-item.is-current { background: var(--acad-green-light); }
.acad .chapter-item.is-current .chapter-item__title { color: var(--acad-green); font-weight: 700; }
.acad .chapter-item__num {
  width: 24px;
  flex-shrink: 0;
  color: var(--acad-text-light);
  font-size: 0.8125rem;
  font-weight: 700;
  text-align: center;
}
.acad .chapter-item.is-current .chapter-item__num { color: var(--acad-green); }
.acad .chapter-item__title { flex: 1; color: var(--acad-text); }
.acad .chapter-item__check { width: 16px; height: 16px; flex-shrink: 0; color: var(--acad-green); }
.acad .chapter-item__lock { width: 14px; height: 14px; flex-shrink: 0; color: var(--acad-text-light); }
.acad .chapter-item__bookmark {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--acad-text-light);
  cursor: pointer;
  padding: 2px;
  display: flex;
}
.acad .chapter-item__bookmark svg { width: 15px; height: 15px; }
.acad .chapter-item__bookmark.is-active { color: var(--acad-accent); }

.acad .related-mini { display: flex; flex-direction: column; }
.acad .related-mini-item {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--acad-border);
  color: inherit;
  text-decoration: none;
}
.acad .related-mini-item--video:hover .related-mini-item__title { color: var(--acad-blue); }
.acad .related-mini-item--seminar:hover .related-mini-item__title { color: var(--acad-blue); }
.acad .related-mini-item:first-child { padding-top: 0; border-top: none; }
.acad .related-mini-item:last-child { padding-bottom: 0; }
.acad .related-mini-item__thumb { width: 88px; aspect-ratio: 16/9; border-radius: var(--acad-radius-sm); overflow: hidden; flex-shrink: 0; background: var(--acad-bg); position: relative; }
.acad .related-mini-item__thumb--empty {
  background: linear-gradient(135deg, #e8edf5 0%, #d5dce8 100%);
}
.acad .related-mini-item__thumb--empty::after {
  content: '';
  position: absolute;
  inset: 0;
  margin: auto;
  width: 28px;
  height: 28px;
  opacity: 0.35;
  background: center / contain no-repeat url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231a2b5f' stroke-width='1.5'%3E%3Crect x='3' y='5' width='18' height='14' rx='2'/%3E%3Ccircle cx='8.5' cy='10.5' r='1.5'/%3E%3Cpath d='m21 16-5.5-5.5L5 21'/%3E%3C/svg%3E");
}
.acad .related-mini-item__thumb img { width: 100%; height: 100%; object-fit: cover; }
.acad .related-mini-item__body { flex: 1; min-width: 0; }
.acad .related-mini-item__title { font-size: 0.8125rem; font-weight: 700; line-height: 1.55; color: var(--acad-primary); margin-bottom: 4px; }
.acad .related-mini-item__instructor { font-size: 0.6875rem; color: var(--acad-text-light); line-height: 1.5; }
.acad .related-mini-item__duration {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 6px;
  font-size: 0.6875rem;
  color: var(--acad-text-light);
}
.acad .related-mini-item__duration svg { width: 12px; height: 12px; flex-shrink: 0; }
.acad .related-mini-item__meta { font-size: 0.6875rem; color: var(--acad-text-light); margin-top: 2px; }

.acad .acad-fav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(15, 41, 66, 0.55);
  color: var(--acad-white);
  border: none;
  cursor: pointer;
}
.acad .acad-fav-btn svg { width: 14px; height: 14px; }
.acad .acad-fav-btn.is-active { color: var(--acad-accent); background: rgba(15, 41, 66, 0.75); }

/* ---------------------------------------------------------------------------
   Forms（ログイン・購入確認）
   --------------------------------------------------------------------------- */
.acad .acad-page-header { background: var(--acad-bg); padding: 40px 0; border-bottom: 1px solid var(--acad-border); }
.acad .acad-page-header__title { font-size: 1.625rem; font-weight: 700; color: var(--acad-primary); margin-bottom: 8px; }
.acad .acad-breadcrumb { font-size: 0.8125rem; color: var(--acad-text-light); display: flex; align-items: center; gap: 8px; }
.acad .acad-breadcrumb a { color: var(--acad-text-light); }

.acad .acad-form-card {
  max-width: 520px;
  margin: 0 auto;
  background: var(--acad-white);
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-md);
  padding: 32px;
  box-shadow: var(--acad-shadow-sm);
}
.acad .acad-form-card__title { font-size: 1.25rem; font-weight: 700; color: var(--acad-primary); margin-bottom: 8px; }
.acad .acad-form-card__lead { font-size: 0.8125rem; color: var(--acad-text-light); margin-bottom: 24px; }

.acad .acad-form-group { margin-bottom: 18px; }
.acad .acad-form-group label { display: block; font-size: 0.8125rem; font-weight: 700; margin-bottom: 6px; }
.acad .acad-form-group input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-sm);
  font-size: 0.9375rem;
  font-family: inherit;
  box-sizing: border-box;
}
.acad .acad-form-group input:focus { outline: none; border-color: var(--acad-primary); }

.acad .acad-form-note { font-size: 0.75rem; color: var(--acad-text-light); line-height: 1.6; margin: 16px 0; }
.acad .acad-form-note a { color: var(--acad-primary); text-decoration: underline; }
.acad .acad-form-links { font-size: 0.8125rem; color: var(--acad-text-light); margin-top: 16px; text-align: center; }
.acad .acad-form-links a { color: var(--acad-primary); text-decoration: underline; }

.acad .acad-product-summary { border: 1px solid var(--acad-border); border-radius: var(--acad-radius-sm); overflow: hidden; margin-bottom: 20px; }
.acad .acad-product-summary__row { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; }
.acad .acad-product-summary__title { font-weight: 700; font-size: 0.9375rem; }
.acad .acad-product-summary__price { font-weight: 700; font-size: 1rem; color: var(--acad-primary); }

.acad .acad-apply-stack { display: flex; flex-direction: column; gap: 20px; max-width: 560px; margin: 0 auto; }
.acad .acad-radio-choice { display: flex; flex-direction: column; gap: 10px; margin-bottom: 18px; }
.acad .acad-radio-option { display: flex; align-items: center; gap: 8px; font-size: 0.875rem; font-weight: 600; cursor: pointer; }
.acad .acad-radio-option input { accent-color: var(--acad-primary); width: 16px; height: 16px; }
.acad .acad-guide-card { background: var(--acad-bg); border-radius: var(--acad-radius-md); padding: 24px; font-size: 0.8125rem; color: var(--acad-text-light); line-height: 1.8; }
.acad .acad-guide-card__title { font-size: 0.9375rem; font-weight: 700; color: var(--acad-primary); margin-bottom: 10px; }
.acad .acad-form-warn { font-size: 0.8125rem; color: var(--acad-danger); background: #fdeceb; padding: 10px 14px; border-radius: var(--acad-radius-sm); margin-bottom: 16px; }

/* ---------------------------------------------------------------------------
   検索結果ページ
   --------------------------------------------------------------------------- */
.acad .search-hero { background: var(--acad-bg); padding: 36px 0; text-align: center; }
.acad .search-hero__form { max-width: 560px; margin: 20px auto 0; display: flex; gap: 8px; }
.acad .search-hero__form input {
  flex: 1;
  padding: 14px 18px;
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-sm);
  font-size: 0.9375rem;
}
.acad .search-suggest { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 14px; }
.acad .search-suggest a { font-size: 0.75rem; padding: 5px 12px; border-radius: 999px; background: var(--acad-white); border: 1px solid var(--acad-border); color: var(--acad-text-light); }

.acad .chapter-hit-list { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }
.acad .chapter-hit {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid var(--acad-border);
  border-radius: var(--acad-radius-sm);
}
.acad .chapter-hit__badge { font-size: 0.6875rem; font-weight: 700; color: var(--acad-white); background: var(--acad-blue); padding: 3px 8px; border-radius: 5px; flex-shrink: 0; }
.acad .chapter-hit__body { flex: 1; min-width: 0; }
.acad .chapter-hit__course { font-size: 0.75rem; color: var(--acad-text-light); }
.acad .chapter-hit__title { font-size: 0.9375rem; font-weight: 700; }

/* ---------------------------------------------------------------------------
   Footer
   --------------------------------------------------------------------------- */
.acad .acad-footer { background: var(--acad-primary-dark); color: rgba(255, 255, 255, 0.7); padding: 56px 0 28px; }
.acad .acad-footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-bottom: 40px; }
.acad .acad-footer-col__title { font-size: 0.8125rem; font-weight: 700; color: var(--acad-white); margin-bottom: 16px; }
.acad .acad-footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.acad .acad-footer-col a { font-size: 0.8125rem; color: rgba(255, 255, 255, 0.6); }
.acad .acad-footer-col a:hover { color: var(--acad-white); }
.acad .acad-footer-copyright { text-align: center; font-size: 0.75rem; color: rgba(255, 255, 255, 0.4); padding-top: 24px; border-top: 1px solid rgba(255, 255, 255, 0.1); }

/* ---------------------------------------------------------------------------
   Utilities / badges
   --------------------------------------------------------------------------- */
.acad .badge { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 999px; font-size: 0.6875rem; font-weight: 700; }
.acad .badge--free { background: var(--acad-green-light); color: var(--acad-green); }
.acad .badge--cert { background: #fff1e8; color: var(--acad-accent); }

/* ---------------------------------------------------------------------------
   Responsive
   --------------------------------------------------------------------------- */
@media screen and (max-width: 1080px) {
  .acad .course-grid { grid-template-columns: repeat(3, 1fr); }
  .acad .acad-features { grid-template-columns: repeat(2, 1fr); }
  .acad .instructor-strip { grid-template-columns: repeat(3, 1fr); }
  .acad .instructor-list-grid { grid-template-columns: repeat(3, 1fr); }
  .acad .list-page { grid-template-columns: 220px 1fr; gap: 24px; }
  .acad .learn-layout { grid-template-columns: 1fr; }
  .acad .learn-side { position: static; }
  .acad .course-hero__grid,
  .acad .course-body { grid-template-columns: 1fr; }
}

@media screen and (max-width: 860px) {
  .acad .acad-nav { display: none; }
  .acad .acad-menu-btn { display: flex; }
  .acad .acad-hero__title { font-size: 1.75rem; }
  .acad .acad-hero__points { grid-template-columns: 1fr; }
  .acad .acad-hero__stats { grid-template-columns: repeat(2, 1fr); }
  .acad .acad-features { grid-template-columns: 1fr 1fr; margin-top: -32px; }
  .acad .course-grid { grid-template-columns: repeat(2, 1fr); }
  .acad .instructor-strip { grid-template-columns: repeat(2, 1fr); }
  .acad .instructor-list-grid { grid-template-columns: repeat(2, 1fr); }
  .acad .list-page { grid-template-columns: 1fr; }
  .acad .filter-sidebar { position: static; margin-bottom: 20px; }
  .acad .acad-footer-grid { grid-template-columns: repeat(2, 1fr); }
  .acad .continue-card { flex-direction: column; align-items: stretch; }
  .acad .continue-card__thumb { width: 100%; }
}

@media screen and (max-width: 560px) {
  .acad .container { padding: 0 16px; }
  .acad .course-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .acad .course-card__title { font-size: 0.8125rem; }
  .acad .acad-hero { padding: 56px 0 72px; }
  .acad .acad-hero__title { font-size: 1.5rem; }
  .acad .dash-stats { grid-template-columns: 1fr 1fr; }
  .acad .acad-footer-grid { grid-template-columns: 1fr; }
  .acad .course-title-row { flex-direction: column; }
  .acad .player-toolbar { flex-direction: column; align-items: stretch; }
}