/* ========================================
   Beginner page
   ======================================== */

.header_nav a[aria-current="page"],
.gnav ul a[aria-current="page"] {
  color: var(--color-green);
}

/* ========================================
   FV
   ======================================== */
.about_fv_visual img {
  display: block;
  width: 100%;
  height: auto;
}

/* ========================================
   About
   ======================================== */
.about_about {
  padding: var(--sp-section-padding) 0;
  background: linear-gradient(270deg, #fffbf0 0%, #f7fff4 100%);
}

.about_about .wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.about_about .section_en {
  order: -1;
}

.about_about .section_title {
  padding-top: 8px;
  -webkit-text-stroke: 1px #fdfcf1;
  paint-order: stroke fill;
  text-shadow: 0 0 5px #ffffff;
}

.about_about_body {
  width: 100%;
  max-width: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding-top: 18px;
}

.about_about_block {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--sp-heading-gap);
}

.about_about_intro {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  color: var(--color-green);
}

.about_pain_list {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.about_pain_item {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 10px 26px;
  background: var(--color-white);
}

.about_pain_item::before {
  content: "";
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  background: url("../img/about_check.webp") center / contain no-repeat;
}

.about_pain_item p {
  font-family: var(--font-sans);
  font-size: var(--fs-section-lead);
  font-weight: 500;
  line-height: 1.46;
  color: var(--color-brown);
}

.about_about_arrow {
  display: block;
  width: 30px;
  height: 14px;
  opacity: 0.6;
}

.about_about_note {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.56;
  text-align: center;
  color: var(--color-brown);
}

.about_text_pink_underline {
  font-weight: 800;
  color: #ff7477;
  text-decoration: underline;
  text-decoration-color: rgba(255, 116, 119, 0.6);
  text-underline-offset: 3px;
}

/* ========================================
   Section head (Mechanism / Reasons)
   ======================================== */
.about_section_head {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  width: 100%;
  max-width: none;
  padding: 0 16px var(--sp-heading-gap);
  border-bottom: 1px solid #6e9628;
}

.about_section_head .section_en {
  font-size: var(--fs-section-lead);
  letter-spacing: 0.24em;
}

.about_section_title {
  padding-top: 5px;
  font-family: var(--font-sans);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.063em;
  line-height: 1.42;
  text-align: center;
  color: var(--color-green);
}

/* ========================================
   Mechanism
   ======================================== */
.about_mechanism {
  padding: var(--sp-section-padding) 0;
  background: var(--color-white);
}

.about_mechanism .wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.about_mechanism_lead {
  width: 100%;
  font-family: var(--font-sans);
  font-size: var(--fs-section-lead);
  line-height: 1.8;
  color: var(--color-brown-soft);
}

.about_mechanism_accent {
  font-weight: 700;
  color: var(--color-green);
}

.about_mechanism_list {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.about_mechanism_box {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 15px 20px;
  background: #e8f0dc;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}

.about_mechanism_box h3 {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.56;
  text-align: center;
  color: var(--color-green);
}

.about_mechanism_box p {
  font-family: var(--font-sans);
  font-size: 12px;
  line-height: 1.67;
  color: var(--color-brown-soft);
}

/* ========================================
   Reasons
   ======================================== */
.about_reasons {
  padding: var(--sp-section-padding) 0;
  background: linear-gradient(270deg, #fffbf0 0%, #f7fff4 100%);
}

.about_reasons .wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 38px;
}

.about_reasons .concept_list {
  padding-top: 0;
}

/* ========================================
   PC overrides
   ======================================== */
@media screen and (min-width: 799px) {
  .about_about,
  .about_mechanism,
  .about_reasons {
    padding-top: var(--pc-section-padding);
    padding-bottom: var(--pc-section-padding);
  }

  .about_section_head,
  .about_mechanism_lead,
  .about_mechanism_list {
    max-width: var(--max-width-inner);
  }

  .about_mechanism_list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }

  .about_about_body {
    max-width: var(--max-width-inner);
  }

  .about_pain_list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .about_about .section_en,
  .about_section_head .section_en {
    font-size: 16px;
    letter-spacing: 0.195em;
    line-height: 1.46;
  }

  .about_about_intro,
  .about_about_note {
    font-size: 22px;
    line-height: 1.4;
  }

  .about_section_title {
    font-size: 22px;
    letter-spacing: 0.0545em;
    line-height: 1.23;
  }

  .about_mechanism_box h3 {
    font-size: 18px;
  }

  .about_mechanism_box p {
    font-size: var(--fs-body);
  }

  .about_reasons .concept_card h3 {
    letter-spacing: 0;
  }
}