/* ==============================
   Base
============================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --header-height: 64px;
  --content-width: 760px;

  --text-white: rgba(255, 255, 255, 0.96);
  --text-soft: rgba(255, 255, 255, 0.74);
  --line: rgba(255, 255, 255, 0.22);

  --glass-bg: rgba(255, 255, 255, 0.16);
  --glass-border: rgba(255, 255, 255, 0.34);

  --accent-yellow: #ffdc82;
  --accent-pink: #ff92b7;
  --accent-blue: #92a7ff;
  --accent-cyan: #6fe5e2;

  --space-top: #06071a;
  --space-middle: #13093a;
  --space-bottom: #050415;
}

html {
  min-height: 100%;
}

body {
  min-height: 100%;
  margin: 0;
  padding-top: calc(var(--header-height) + 18px);
  color: var(--text-white);
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    "Hiragino Kaku Gothic ProN",
    "Yu Gothic",
    "Noto Sans JP",
    sans-serif;
  line-height: 1.75;
  background:
    radial-gradient(circle at 15% 0%, rgba(157, 117, 255, 0.38), transparent 36%),
    radial-gradient(circle at 88% 15%, rgba(255, 105, 195, 0.2), transparent 34%),
    radial-gradient(circle at 50% 100%, rgba(74, 168, 255, 0.18), transparent 40%),
    linear-gradient(
      180deg,
      var(--space-top) 0%,
      var(--space-middle) 48%,
      var(--space-bottom) 100%
    );
  background-attachment: fixed;
}

/* Stars */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.52;
  background:
    radial-gradient(circle, rgba(255,255,255,.9) 1px, transparent 1.7px) 0 0 / 120px 120px,
    radial-gradient(circle, rgba(255,255,255,.65) 1px, transparent 1.8px) 45px 25px / 170px 170px,
    radial-gradient(circle, rgba(255,255,255,.4) 2px, transparent 4px) 70px 90px / 420px 420px;
  animation: star-drift 120s linear infinite;
}

@keyframes star-drift {
  to {
    transform: translate3d(36px, -120px, 0);
  }
}

/* ==============================
   Header
============================== */
.fixed-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-height);
  display: grid;
  grid-template-columns: 44px 1fr 44px;
  align-items: center;
  padding: 0 12px;
  background: rgba(255, 255, 255, 0.34);
  border-bottom: 1px solid rgba(255, 255, 255, 0.34);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.14);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.header-side {
  display: flex;
  align-items: center;
  min-width: 44px;
}

.header-side img {
  display: block;
  height: 30px;
}

.logo-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo-center img {
  display: block;
  height: 40px;
}

/* ==============================
   Main glass card
============================== */
.page-card {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 28px), var(--content-width));
  margin: 0 auto 48px;
  padding: 18px 24px 30px;
  overflow: hidden;
  border: 1px solid var(--glass-border);
  border-radius: 30px;
  background:
    linear-gradient(
      145deg,
      rgba(255, 255, 255, 0.2),
      rgba(255, 255, 255, 0.1)
    );
  box-shadow:
    0 32px 90px rgba(0, 0, 0, 0.34),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.page-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(600px 180px at 50% 0%, rgba(255,255,255,.18), transparent 72%);
}

/* ==============================
   Hero
============================== */
.hero-section,
.content-section,
.page-bottom {
  position: relative;
  z-index: 1;
}

.hero-image {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 22px;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.24);
}

.page-title {
  margin: 24px 0 12px;
  text-align: center;
  font-size: clamp(25px, 5vw, 38px);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: 0.02em;
  text-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
}

.page-title span {
  display: block;
  margin-bottom: 3px;
  color: var(--text-soft);
  font-size: 0.52em;
  letter-spacing: 0.08em;
}

.campaign-lead {
  margin: 18px auto 8px;
  text-align: center;
}

.campaign-lead p {
  margin: 7px 0;
  font-weight: 700;
}

.campaign-highlight {
  display: inline-block;
  margin: 10px auto !important;
  padding: 12px 24px;
  color: #2a1720;
  font-size: clamp(21px, 5vw, 32px);
  font-weight: 900 !important;
  line-height: 1.35;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-yellow), var(--accent-pink));
  box-shadow:
    0 14px 32px rgba(0, 0, 0, 0.2),
    0 0 28px rgba(255, 178, 181, 0.18);
}

/* ==============================
   Section divider
============================== */
.section-divider {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  margin: 34px 0 28px;
  color: rgba(255, 255, 255, 0.66);
}

.section-divider::before,
.section-divider::after {
  content: "";
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.42),
    transparent
  );
}

.section-divider span {
  font-size: 15px;
  text-shadow: 0 0 14px rgba(255, 255, 255, 0.8);
}

/* ==============================
   Sections
============================== */
.content-section {
  max-width: 660px;
  margin: 0 auto;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 11px;
  margin: 0 0 18px;
  font-size: clamp(20px, 4vw, 25px);
  line-height: 1.4;
  letter-spacing: 0.04em;
  text-align: center;
  text-shadow: 0 3px 14px rgba(0, 0, 0, 0.32);
}

.section-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 24px;
  border: 1px solid rgba(255,255,255,.45);
  border-radius: 999px;
  color: #1a1d2d;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.04em;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.14);
}

.section-note {
  margin: -6px 0 18px;
  color: var(--text-soft);
  font-size: 14px;
  text-align: center;
}

/* ==============================
   Payment
============================== */
.payment-list {
  max-width: 560px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.payment-list li {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 13px 8px;
  font-weight: 700;
}

.payment-list li + li {
  border-top: 1px solid var(--line);
}

.payment-number {
  display: inline-flex;
  flex: 0 0 30px;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  color: #162036;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  font-size: 13px;
  font-weight: 900;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.16);
}

/* ==============================
   Point comparison
============================== */
.point-comparison {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: stretch;
  max-width: 650px;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 21px;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.18);
}

.point-column {
  padding: 22px 18px;
  text-align: center;
}

.point-normal {
  background: rgba(255, 255, 255, 0.08);
}

.point-campaign {
  color: #291a21;
  background: linear-gradient(
    135deg,
    rgba(255, 222, 136, 0.96),
    rgba(255, 147, 183, 0.92)
  );
}

.point-label {
  margin: 0 0 13px;
  font-size: 18px;
  font-weight: 900;
}

.point-column dl {
  margin: 0;
}

.point-column dl div {
  display: grid;
  gap: 2px;
  margin-top: 10px;
}

.point-column dt {
  color: var(--text-soft);
  font-size: 13px;
  font-weight: 700;
}

.point-campaign dt {
  color: rgba(41, 26, 33, 0.7);
}

.point-column dd {
  margin: 0;
  font-size: 18px;
  font-weight: 900;
}

.campaign-point {
  color: #a90025;
  font-size: 25px !important;
}

.comparison-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 24px;
  font-weight: 900;
  background: rgba(0, 0, 0, 0.08);
}

/* ==============================
   Period
============================== */
.period-text {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 14px;
  margin: 0;
  font-size: clamp(18px, 4vw, 23px);
  font-weight: 900;
  text-align: center;
  text-shadow: 0 3px 14px rgba(0, 0, 0, 0.28);
}

.period-separator {
  color: var(--accent-yellow);
}

/* ==============================
   Notice
============================== */
.notice-list {
  max-width: 610px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.notice-list li {
  position: relative;
  padding: 8px 0 8px 28px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 14px;
}

.notice-list li::before {
  content: "※";
  position: absolute;
  left: 0;
  color: var(--accent-yellow);
  font-weight: 900;
}

/* ==============================
   Bottom
============================== */
.page-bottom {
  margin-top: 38px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.back-link {
  display: block;
  width: fit-content;
  margin: 0 auto;
}

.back-link img {
  display: block;
  width: min(30vw, 180px);
  border: 0;
}

footer {
  margin-top: 22px;
  color: rgba(255, 255, 255, 0.56);
  font-size: 12px;
  text-align: center;
}

footer p {
  margin: 0;
}

/* ==============================
   Responsive
============================== */
@media (max-width: 600px) {
  body {
    padding-top: calc(var(--header-height) + 10px);
  }

  .page-card {
    width: calc(100% - 14px);
    padding: 12px 14px 24px;
    border-radius: 23px;
  }

  .hero-image {
    border-radius: 17px;
  }

  .point-comparison {
    grid-template-columns: 1fr;
  }

  .comparison-arrow {
    width: 100%;
    height: 38px;
    transform: rotate(90deg);
  }

  .point-column {
    padding: 20px 14px;
  }

  .section-divider {
    margin: 29px 0 24px;
  }

  .notice-list li {
    padding-left: 24px;
  }

  .logo-center img {
    height: 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  body::before {
    animation: none;
  }
}