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

:root {
  --bg-page: #ececec;
  --bg-container: #f3f3f3;
  --bg-card: #ffffff;
  --text-main: #3f3f3f;
  --text-body: #555555;
  --accent-blue: #2458a6;
  --accent-blue-dark: #1d4d91;
  --banner-blue: #2c5a96;
  --btn-gray: #565656;
  --btn-gray-dark: #474747;
  --btn-pink: #ff3b4f;
  --btn-pink-dark: #eb3044;
  --shadow-card: 0 6px 20px rgba(0, 0, 0, 0.08);
  --shadow-btn: 0 4px 12px rgba(0, 0, 0, 0.12);
  --radius-card: 18px;
  --radius-btn: 999px;
  --content-width: 860px;
}

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg-page);
  color: var(--text-main);
  font-family: "Hiragino Sans", "Yu Gothic", "YuGothic", sans-serif;
  line-height: 1.75;
}

img {
  display: block;
  width: 100%;
  height: auto;
}

a {
  transition:
    background-color 0.25s ease,
    transform 0.2s ease,
    box-shadow 0.25s ease,
    opacity 0.25s ease;
}

a:focus-visible {
  outline: 3px solid rgba(36, 88, 166, 0.28);
  outline-offset: 3px;
}

.lp-container {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  background: var(--bg-container);
  overflow: hidden;
}

.mv,
.review-intro,
.campaign-banner {
  width: 100%;
}

.mv img,
.review-intro img {
  width: 100%;
}

/* キャンペーン帯 */
.campaign-banner {
  padding: 28px 18px 22px;
}

.campaign-banner__inner {
  width: 100%;
  max-width: 936px;
  margin: 0 auto;
  padding: 36px 24px;
  background: var(--banner-blue);
  color: #ffffff;
  text-align: center;
  box-shadow: var(--shadow-btn);
}

.campaign-banner__title {
  margin: 0 0 8px;
  font-size: 1.4rem;
  line-height: 1.4;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.campaign-banner__period {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.5;
  font-weight: 500;
  letter-spacing: 0.01em;
}

/* 共通セクション */
.content-section {
  padding: 14px 18px 0;
}

.content-section--last {
  padding-bottom: 40px;
}

.section-card,
.login-card {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  background: var(--bg-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}

.section-card {
  padding: 30px 28px 34px;
}

.login-card {
  padding: 24px 24px 22px;
}

.section-title {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin: 0 0 22px;
}

.title-bar {
  width: 6px;
  min-width: 6px;
  height: 40px;
  margin-top: 2px;
  border-radius: 3px;
  background: var(--accent-blue);
}

.title-text {
  font-size: 1.15rem;
  line-height: 1.35;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0.01em;
}

.lead-text {
  margin: 0 0 8px;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-main);
}

.point-text {
  margin: 0 0 14px;
  font-size: 1.2rem;
  line-height: 1.5;
  font-weight: 700;
  color: var(--accent-blue);
}

.body-text,
.note-item,
.method-list li {
  font-size: 1rem;
  line-height: 1.95;
  color: var(--text-body);
}

.body-text {
  margin: 0 0 14px;
}

.text-block {
  margin-top: 28px;
}

.subheading {
  margin: 0 0 10px;
  font-size: 1rem;
  line-height: 1.8;
  font-weight: 400;
  color: var(--text-body);
}

/* 投稿方法 */
.method-list {
  margin: 0 0 24px;
  padding-left: 1.35em;
}

.method-list li {
  margin: 0 0 8px;
}

/* 注意事項 */
.notes-list {
  margin-bottom: 24px;
}

.note-item {
  margin: 0 0 14px;
}

.note-item:last-child {
  margin-bottom: 0;
}

/* 共通ボタン */
.action-btn {
  display: block;
  width: 100%;
  max-width: 780px;
  margin: 0 auto;
  padding: 15px 18px;
  border-radius: var(--radius-btn);
  text-align: center;
  text-decoration: none;
  font-size: 1rem;
  line-height: 1.5;
  font-weight: 700;
  color: #ffffff;
  box-shadow: var(--shadow-btn);
}

.action-btn:hover {
  transform: translateY(-1px);
}

.action-btn:active {
  transform: translateY(0);
}

.action-btn--blue {
  background: var(--accent-blue);
}

.action-btn--blue:hover {
  background: var(--accent-blue-dark);
}

.action-btn--gray {
  background: var(--btn-gray);
}

.action-btn--gray:hover {
  background: var(--btn-gray-dark);
}

.action-btn--pink {
  background: var(--btn-pink);
}

.action-btn--pink:hover {
  background: var(--btn-pink-dark);
}

/* マイページ */
.login-lead {
  margin: 0 0 16px;
  font-size: 1.1rem;
  line-height: 1.6;
  font-weight: 700;
  color: var(--text-main);
}

/* タブレット以上 */
@media screen and (min-width: 768px) {
  .campaign-banner {
    padding: 34px 24px 24px;
  }

  .campaign-banner__inner {
    padding: 40px 28px;
  }

  .campaign-banner__title {
    font-size: 2rem;
    margin-bottom: 10px;
  }

  .campaign-banner__period {
    font-size: 1.55rem;
  }

  .content-section {
    padding: 18px 24px 0;
  }

  .content-section--last {
    padding-bottom: 48px;
  }

  .section-card {
    padding: 40px 40px 42px;
  }

  .login-card {
    padding: 30px 32px 28px;
  }

  .section-title {
    gap: 16px;
    margin-bottom: 28px;
  }

  .title-bar {
    width: 8px;
    min-width: 8px;
    height: 48px;
  }

  .title-text {
    font-size: 1.9rem;
  }

  .lead-text {
    font-size: 1.5rem;
    margin-bottom: 10px;
  }

  .point-text {
    font-size: 1.95rem;
    margin-bottom: 18px;
  }

  .body-text,
  .subheading,
  .note-item,
  .method-list li {
    font-size: 1.18rem;
  }

  .text-block {
    margin-top: 34px;
  }

  .method-list {
    margin-bottom: 30px;
  }

  .notes-list {
    margin-bottom: 30px;
  }

  .action-btn {
    padding: 18px 24px;
    font-size: 1.2rem;
  }

  .login-lead {
    margin-bottom: 20px;
    font-size: 1.55rem;
  }
}

/* PC */
@media screen and (min-width: 1001px) {
  .content-section {
    padding-left: 28px;
    padding-right: 28px;
  }

  .section-card {
    padding: 44px 44px 46px;
  }

  .login-card {
    padding: 34px 36px 32px;
  }

  .title-text {
    font-size: 2.2rem;
  }

  .lead-text {
    font-size: 1.8rem;
  }

  .point-text {
    font-size: 2.25rem;
  }

  .body-text,
  .subheading,
  .note-item,
  .method-list li {
    font-size: 1.5rem;
  }

  .action-btn {
    font-size: 1.45rem;
    padding: 20px 26px;
  }

  .login-lead {
    font-size: 1.9rem;
  }
}

/* スマホ */
@media screen and (max-width: 767px) {
  body {
    background: #ffffff;
  }

  .lp-container {
    background: var(--bg-container);
  }

  .campaign-banner {
    padding: 20px 12px 18px;
  }

  .campaign-banner__inner {
    padding: 28px 16px;
  }

  .campaign-banner__title {
    font-size: 1.15rem;
    margin-bottom: 6px;
  }

  .campaign-banner__period {
    font-size: 0.95rem;
    line-height: 1.55;
  }

  .content-section {
    padding: 12px 12px 0;
  }

  .content-section--last {
    padding-bottom: 30px;
  }

  .section-card {
    padding: 22px 16px 24px;
    border-radius: 14px;
  }

  .login-card {
    padding: 18px 16px 18px;
    border-radius: 14px;
  }

  .section-title {
    gap: 10px;
    margin-bottom: 18px;
  }

  .title-bar {
    width: 5px;
    min-width: 5px;
    height: 30px;
  }

  .title-text {
    font-size: 1.9rem;
    line-height: 1.25;
  }

  .lead-text {
    font-size: 1rem;
    line-height: 1.8;
  }

  .point-text {
    font-size: 1.35rem;
    line-height: 1.5;
  }

  .body-text,
  .subheading,
  .note-item,
  .method-list li {
    font-size: 1rem;
    line-height: 1.9;
  }

  .text-block {
    margin-top: 22px;
  }

  .method-list {
    padding-left: 1.25em;
  }

  .action-btn {
    padding: 14px 16px;
    font-size: 1rem;
  }

  .login-lead {
    font-size: 1.05rem;
    margin-bottom: 14px;
  }
}