/* info-accounting.com（Eurekapu）のトーンに合わせたシンプルなスタイル */
:root {
  --fg: #111;
  --fg-sub: #555;
  --fg-mute: #888;
  --bg: #f4f4f4;
  --panel: #fff;
  --line: #e6e6e6;
  --accent: #c026d3;
  --accent-soft: #fae8ff;
  --radius: 10px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Noto Sans JP", "Noto Sans CJK JP", "Yu Gothic UI", Meiryo, sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { max-width: 100%; }

/* Top bar (info-accounting.com と同じ構成) */
.topbar { background: #fff; border-bottom: 1px solid var(--line); }
.topbar-inner {
  max-width: 960px; margin: 0 auto; padding: 0 16px; height: 48px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo { font-weight: 900; font-size: 1rem; letter-spacing: -.01em; text-decoration: none; }
.topbar-link { font-size: .8rem; font-weight: 700; text-decoration: none; color: var(--fg-sub); }
.topbar-link:hover { color: var(--fg); }

.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px 48px; }

/* Hero */
.hero { padding: 36px 0 24px; }
.hero-kicker { margin: 0 0 4px; font-size: .78rem; font-weight: 700; color: var(--fg-mute); letter-spacing: .04em; }
.hero h1 { margin: 0 0 10px; font-size: 2rem; line-height: 1.25; font-weight: 900; letter-spacing: -.01em; }
.hero-lead { margin: 0; font-size: .92rem; color: var(--fg-sub); }
.nw { display: inline-block; }

/* Coupon */
.coupon {
  margin: 0 0 32px;
  padding: 20px 20px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 4px solid var(--accent);
  border-radius: var(--radius);
}
.coupon-label { margin: 0 0 4px; font-size: .78rem; font-weight: 700; color: var(--accent); letter-spacing: .06em; }
.coupon-price { margin: 0; font-size: 1rem; font-weight: 700; }
.coupon-price strong { font-size: 2.4rem; font-weight: 900; letter-spacing: -.02em; line-height: 1.2; }
.coupon-price .from { font-size: 1.2rem; font-weight: 900; }
.coupon-code { margin: 8px 0 0; font-size: .85rem; font-weight: 700; color: var(--fg-sub); display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.coupon-code code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 1.1rem; font-weight: 700; color: var(--fg);
  padding: 3px 10px;
  background: var(--accent-soft);
  border: 1px dashed var(--accent);
  border-radius: 6px;
  letter-spacing: .04em;
}
.copy {
  font: inherit; font-size: .78rem; font-weight: 700;
  padding: 4px 12px;
  border: 1px solid var(--fg);
  border-radius: 999px;
  background: #fff; color: var(--fg);
  cursor: pointer;
}
.copy:hover { background: var(--fg); color: #fff; }
.coupon-period { margin: 12px 0 0; font-weight: 700; font-size: .9rem; }
.coupon-notice, .coupon-note { margin: 4px 0 0; font-size: .8rem; color: var(--fg-sub); }
.coupon-notice { color: var(--fg); }
.coupon--empty { border-top-color: #bfbfbf; }
.coupon--empty .coupon-label { color: var(--fg-sub); font-size: .95rem; letter-spacing: 0; }

/* State switching */
body[data-state="none"] [data-coupon-block],
body[data-state="active"] [data-empty-block],
body[data-state="upcoming"] [data-empty-block],
body:not([data-state="active"]) [data-label-active],
body:not([data-state="upcoming"]) [data-label-upcoming],
body:not([data-state="active"]) [data-btn-coupon],
body[data-state="active"] [data-btn-plain] { display: none; }
body[data-state="upcoming"] .coupon { border-top-color: #bfbfbf; }
body[data-state="upcoming"] .coupon-label { color: var(--fg-sub); }

/* Courses */
.section-heading { margin: 0 0 12px; font-size: .8rem; font-weight: 700; color: var(--fg-mute); letter-spacing: .04em; }
.cards { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow .15s ease;
}
.card:hover { box-shadow: 0 6px 20px rgba(0, 0, 0, .07); }
.card-link { display: flex; flex-direction: column; height: 100%; text-decoration: none; }
.card-thumb { aspect-ratio: 16 / 9; overflow: hidden; background: #ececec; }
.card-thumb img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.card-body { display: flex; flex-direction: column; flex: 1; padding: 16px 18px 18px; }
.card-label { margin: 0 0 4px; font-size: .72rem; font-weight: 700; color: var(--fg-mute); }
.card-title { margin: 0 0 8px; font-size: 1rem; line-height: 1.55; font-weight: 700; }
.card-summary { margin: 0; font-size: .84rem; color: var(--fg-sub); }
.card-meta {
  margin: 10px 0 0; font-size: .78rem; font-weight: 700; color: var(--fg-mute);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 12px; margin-top: auto; padding-top: 10px;
}
.card-price { color: var(--fg); }
.card-price strong { color: var(--accent); font-size: .95rem; font-weight: 900; }
.btn {
  display: block;
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 8px;
  background: var(--fg);
  color: #fff;
  font-weight: 700;
  text-align: center;
  font-size: .92rem;
  text-decoration: none;
}
.card-link:hover .btn, .btn:hover { background: var(--accent); }
.btn--plain { background: #fff; color: var(--fg); border: 1px solid var(--fg); }
.card-link:hover .btn--plain { background: var(--fg); color: #fff; }
.btn--inline { display: inline-block; padding: 10px 20px; }

/* Footer */
.foot { background: #fff; border-top: 1px solid var(--line); }
.foot-inner { max-width: 960px; margin: 0 auto; padding: 24px 16px 32px; font-size: .75rem; color: var(--fg-mute); text-align: center; }
.foot-inner p { margin: 4px 0; }
.foot-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 20px; margin-bottom: 12px; }
.foot-links a { color: var(--fg); font-weight: 700; text-decoration: none; font-size: .8rem; }
.foot-links a:hover { text-decoration: underline; }

@media (min-width: 720px) {
  .topbar-inner { padding: 0 24px; }
  .wrap { padding: 0 24px 64px; }
  .hero { padding: 56px 0 32px; }
  .hero h1 { font-size: 2.6rem; }
  .coupon { padding: 24px 28px 22px; max-width: 640px; }
  .cards { grid-template-columns: 1fr 1fr; gap: 20px; }
}
@media (prefers-reduced-motion: reduce) { .card { transition: none; } }