/* ============================================================
   FLOCSS Lite 構成
   Foundation ... 全体のリセット・基本スタイル
   Layout     ... l- プレフィックス（ヘッダー・コンテナ等の骨組み）
   Component  ... c- プレフィックス（使い回す小さな部品）
   Project    ... p- プレフィックス（このページ固有のまとまり）
   Utility    ... u- プレフィックス（最終手段の微調整のみ）

   命名規則: Block__Element / Block--Modifier（BEM）
   ID セレクタ・!important は使用しない
   ============================================================ */

/* ===== Foundation ============================================ */

:root {
  --color-primary: #ff5a5f;
  --color-primary-dark: #e14448;
  --color-accent: #2b2250;
  --color-bg: #fff8f3;
  --color-surface: #ffffff;
  --color-text: #2b2b2b;
  --color-text-sub: #6b6b6b;
  --color-border: #ece4dd;
  --font-family-base: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Sans", sans-serif;
  --radius-s: 8px;
  --radius-m: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-family-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-text-size-adjust: 100%;
  line-height: 1.7;
}

h1, h2, h3, dl, dd, ul, ol, p {
  margin: 0;
  padding: 0;
}

ul, ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  padding: 0;
}

/* ===== Layout ================================================ */

.l-container {
  max-width: 480px;
  margin: 0 auto;
  padding: 0 20px;
}

.l-header {
  background-color: var(--color-accent);
}

.l-header__inner {
  max-width: 480px;
  margin: 0 auto;
  padding: 10px 20px;
  text-align: center;
}

.l-main {
  overflow: hidden;
}

.l-section {
  padding: 48px 0;
}

.l-section--alt {
  background-color: var(--color-surface);
}

.l-footer {
  padding: 24px 0 96px;
}

.l-footer__copy {
  font-size: 11px;
  line-height: 1.8;
  color: var(--color-text-sub);
  text-align: center;
}

/* ===== Component ============================================= */

.c-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.c-badge--period {
  color: #ffffff;
}

.c-heading--section {
  font-size: 20px;
  font-weight: 900;
  text-align: center;
  margin-bottom: 24px;
  position: relative;
}

.c-heading--section::after {
  content: "";
  display: block;
  width: 32px;
  height: 3px;
  background-color: var(--color-primary);
  margin: 12px auto 0;
  border-radius: 2px;
}

.c-button {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  text-align: center;
}

.c-button--primary {
  background-color: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 8px 20px rgba(255, 90, 95, 0.35);
}

.c-button--block {
  display: block;
  width: 100%;
}

.c-timebox {
  background-color: var(--color-accent);
  color: #ffffff;
  border-radius: var(--radius-s);
  padding: 10px 4px;
  text-align: center;
  flex: 1;
}

.c-timebox__num {
  display: block;
  font-size: 22px;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
}

.c-timebox__label {
  display: block;
  font-size: 10px;
  margin-top: 2px;
  opacity: 0.8;
}

.c-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  margin: 0 auto 12px;
  background-color: #fff0ee;
  position: relative;
}

.c-icon::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  transform: translate(-50%, -50%);
  background-color: var(--color-primary);
}

.c-icon--point::before {
  border-radius: 50%;
}

.c-icon--gift::before {
  border-radius: 4px;
}

.c-icon--mail::before {
  border-radius: 2px;
  height: 14px;
}

.c-accordion__item {
  border-bottom: 1px solid var(--color-border);
}

.c-accordion__trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 4px;
  font-size: 14px;
  font-weight: 500;
  text-align: left;
}

.c-accordion__icon {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  margin-left: 12px;
  position: relative;
}

.c-accordion__icon::before,
.c-accordion__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background-color: var(--color-text-sub);
  transform: translate(-50%, -50%);
}

.c-accordion__icon::before {
  width: 12px;
  height: 2px;
}

.c-accordion__icon::after {
  width: 2px;
  height: 12px;
  transition: transform 0.2s ease;
}

.c-accordion__trigger[aria-expanded="true"] .c-accordion__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.c-accordion__panel {
  padding: 0 4px 18px;
}

.c-accordion__text {
  font-size: 13px;
  color: var(--color-text-sub);
}

.c-fixed-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 20px calc(12px + env(safe-area-inset-bottom));
  background-color: rgba(255, 248, 243, 0.92);
  backdrop-filter: blur(6px);
  border-top: 1px solid var(--color-border);
  z-index: 10;
}

.c-fixed-cta[hidden] {
  display: none;
}

/* ===== Project ================================================ */

.p-fv {
  position: relative;
  padding: 56px 0 40px;
  text-align: center;
  overflow: hidden;
}

.p-fv__bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 20%, #ffd7c2 0%, transparent 55%),
    linear-gradient(160deg, var(--color-accent) 0%, #453a7a 100%);
  z-index: -1;
}

.p-fv__eyebrow {
  color: #ffd7c2;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: 12px;
}

.p-fv__title {
  color: #ffffff;
  font-size: 28px;
  font-weight: 900;
  line-height: 1.5;
}

.p-fv__title-em {
  color: var(--color-primary);
  font-size: 36px;
}

.p-fv__lead {
  color: #ffffff;
  font-size: 13px;
  opacity: 0.85;
  margin-top: 16px;
}

.p-fv__cta {
  margin-top: 28px;
}

.p-countdown {
  padding: 24px 0;
}

.p-countdown__label {
  text-align: center;
  font-size: 12px;
  color: var(--color-text-sub);
  margin-bottom: 10px;
}

.p-countdown__timer {
  display: flex;
  gap: 8px;
}

.p-overview__row {
  display: flex;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 13px;
}

.p-overview__row:first-child {
  border-top: 1px solid var(--color-border);
}

.p-overview__term {
  flex-shrink: 0;
  width: 84px;
  font-weight: 700;
  color: var(--color-accent);
}

.p-overview__desc {
  color: var(--color-text);
}

.p-steps__item {
  display: flex;
  gap: 14px;
  padding-bottom: 24px;
}

.p-steps__item:last-child {
  padding-bottom: 0;
}

.p-steps__num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #ffffff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.p-steps__title {
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 4px;
}

.p-steps__text {
  font-size: 12px;
  color: var(--color-text-sub);
}

.l-section .c-button--block {
  margin-top: 32px;
}

.p-benefits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.p-benefits__item {
  text-align: center;
}

.p-benefits__title {
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 4px;
}

.p-benefits__text {
  font-size: 10px;
  color: var(--color-text-sub);
  line-height: 1.5;
}

.p-notes__item {
  font-size: 11px;
  color: var(--color-text-sub);
  padding-left: 1em;
  position: relative;
  margin-bottom: 8px;
}

.p-notes__item::before {
  content: "※";
  position: absolute;
  left: 0;
}

/* ===== Utility ================================================ */

.u-mt-0 {
  margin-top: 0;
}