:root { --green: #00a85b; --green-dark: #087645; --navy: #123b60; }
* { box-sizing: border-box; }
body { margin: 0; color: var(--navy); background: #fff; font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif; }
a { color: var(--green-dark); }
.site-header { border-bottom: 1px solid #e4ece8; background: #fff; }
.site-header__inner { max-width: 1200px; min-height: 80px; margin: auto; padding: 14px 24px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.site-branding { display: flex; align-items: center; gap: 18px; min-width: 0; }
.site-logo img { display: block; width: 130px; height: auto; }
.site-branding__divider { height: 28px; border-left: 1px solid #b8cbd3; }
.site-branding__event { font-size: 15px; font-weight: 700; white-space: nowrap; }
.header-back { font-size: 14px; font-weight: 700; text-decoration: none; white-space: nowrap; }
.header-back:hover, a:hover { text-decoration: underline; }
.cancel-main { min-height: calc(100vh - 150px); padding: 56px 20px 80px; background: radial-gradient(circle at 50% 25%, #fff 20%, #effbf4 100%); }
.cancel-container { max-width: 780px; margin: 0 auto; }
.section-label { margin: 0 0 4px; color: var(--green); font-size: 15px; font-weight: 800; letter-spacing: .12em; text-align: center; }
h1 { margin: 0; font-size: clamp(27px, 4vw, 38px); line-height: 1.4; text-align: center; }
.cancel-intro { margin: 16px auto 32px; line-height: 1.8; text-align: center; }
.cancel-card { padding: 32px 36px 38px; border: 2px solid #9de5ba; border-radius: 16px; background: #fff; box-shadow: 0 18px 50px rgba(0, 142, 80, .07); }
.cancel-card h2 { margin: 0 0 8px; font-size: 25px; }
.cancel-card > p { margin: 0 0 14px; line-height: 1.75; }
.cancel-card__note { padding: 13px 16px; border-radius: 8px; background: #f0fbf5; font-size: 14px; }
.cancel-card--thanks > p { margin-bottom: 18px; }
.cancel-card--thanks h2 { margin: 28px 0 16px; padding-top: 25px; border-top: 1px solid #d9ebe1; font-size: 21px; }
.online-button { display: inline-flex; align-items: center; gap: 14px; padding: 13px 22px; border-radius: 8px; color: #fff; background: var(--green-dark); font-weight: 700; text-decoration: none; }
.online-button:hover, .online-button:focus-visible { color: #fff; background: #005d35; text-decoration: underline; }
.pardot-form { display: block; width: 100%; min-height: 600px; margin-top: 20px; border: 0; }
.contact-note { margin: 22px 6px 0; font-size: 14px; line-height: 1.8; }
.site-footer { border-top: 1px solid #e4ece8; background: #fff; }
.footer-inner { max-width: 1200px; margin: auto; padding: 24px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.footer-inner img { display: block; width: 130px; height: auto; }
.footer-inner small { color: #657686; }
@media (max-width: 640px) {
  .site-header__inner { padding: 12px 16px; flex-wrap: wrap; }
  .site-logo img { width: 100px; }
  .site-branding { gap: 10px; }
  .site-branding__event { font-size: 12px; }
  .header-back { margin-left: auto; }
  .cancel-main { padding: 38px 12px 56px; }
  .cancel-intro { text-align: left; }
  .cancel-card { padding: 23px 16px 28px; }
  .cancel-card h2 { font-size: 21px; }
  .footer-inner { padding: 20px 16px; }
}