:root {
  --font-Montserrat: "Montserrat";
  font-family: var(--font-sans);
  --water: #00a8c0;
}
body {
  line-height: normal;
  font-weight: normal;
}

.main_fv{
  text-align: center;
  background: url("../orabio_brush/img/Orabio_bg.png") center/cover no-repeat;
  padding: 64px 0 0;
}
.fv {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
}

/* ====== FEATURES section====== */
.features {
  padding: 56px 16px 40px;
}
.features__inner {
  max-width: 1000px;
  margin: 0 auto;
}
.features__title {
  text-align: center;
  letter-spacing: 0.15em;
  font-weight: 500;
  font-size: clamp(22px, 3.6vw, 40px);
  color: #646567;
  margin: 0 0 43px;
}
.features__title span {
  font-weight: 400;
  font-size: 0.6em;
  color: #646567;
}
.features__tagline {
  display: flex;
  padding: 10px 16px;
  background: #ecf6f6;
  color: var(--water);
  font-weight: 600;
  border-radius: 6px;
  margin: 0 auto 48px;
  text-align: center;
  justify-content: center;
  align-items: center;
  max-width: 700px;
}
.features__tagline p {
  margin: 0;
  font-size: 22px;
}

.features__cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  margin-bottom: 42px;
}
.features__card {
  width: min(100%, 370px);
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  background: #fff;
}
.features__card-title {
  font-size: 20px;
  font-weight: 600;
  color: #646567;
  margin: -12px auto 10px;
  text-align: center;
  background: #fff;
  max-width: 150px;
}
.features__img {
  margin: 0;
}
.features__img img {
  width: 100%;
  display: block;
  margin: 0;
}
.features__desc {
  font-size: 16px;
  line-height: 1.5;
  color: #646567;
  margin: 0;
  padding: 14px 16px 20px;
}

.features__compare {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.compare__item {
  text-align: center;
}
.compare__label {
  font-size: 18px;
  font-weight: 700;
  color: var(--water);
  margin: 0 0 8px;
}
.compare__img {
  margin: 0;
}
.compare__img img {
  width: 370px;
  display: block;
  border-radius: 6px;
}
.compare__arrow img {
  width: 32px;
  color: var(--water);
  line-height: 1;
}

/* usageセクション */
.usage {
  padding: 56px 16px 60px;
}
.usage__inner {
  max-width: 1000px;
  margin: 0 auto;
}
.usage__title {
  text-align: center;
  letter-spacing: 0.15em;
  font-weight: 500;
  font-size: clamp(22px, 3.6vw, 40px);
  color: #646567;
  margin: 0 0 43px;
}
.usage__title span {
  font-weight: 400;
  font-size: 0.6em;
  color: #646567;
}
.usage__grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px 32px;
  align-items: start;
}
.usage-step {
  position: relative;
}
.usage-step__head {
  position: relative;
  padding-left: 64px;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.usage-step__title {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: #646567;
}
.usage-step__num {
  position: absolute;
  top: -6%;
  left: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 47px;
  height: 44px;
  padding: 0 5px;
  color: #fff;
  font-weight: 500;
  font-size: 28px;
  line-height: 1;
  background: var(--water, #00a8c0);
  clip-path: polygon(0 0, 100% 0, 86% 100%, 0 100%);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.1);
  font-family: serif;
}
.usage-step__media {
  margin: 24px 0 12px;
  text-align: center;
}
.usage-step__media img {
  max-width: 260px;
  width: 100%;
  height: auto;
  display: inline-block;
}
.usage-step__body {
  margin: 0;
  font-size: 16px;
  line-height: 1.5;
  color: #646567;
}
.usage-step__note {
  color: #9aa0a6;
  font-size: 13px;
}
.usage__note {
  margin-top: 24px;
  padding: 14px 18px;
  background: #eaf6f6;
  border-radius: 10px;
  color: #646567;
}
.usage__note-title {
  margin: 0 0 6px;
  font-weight: 600;
  font-size: 14px;
}
.usage__note-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.usage__note-list li {
  position: relative;
  padding-left: 1.2em;
  line-height: 1.9;
  font-size: 14px;
}
.usage__note-list li::before {
  content: "●";
  position: absolute;
  left: 0;
  top: 0;
  line-height: 1.9;
  color: #646567;
  font-size: 0.9em;
}

/* ===== 製品情報セクション ===== */
.pinfo {
  position: relative;
  padding: 56px 16px 64px;
  isolation: isolate;
  font-family: var(--font-Montserrat);
}
.pinfo__bg {
  position: absolute;
  inset: 0;
  background: #f6f7f8 url("./img/orabio_dental_pinfo.png") center/cover
    no-repeat;
  z-index: -1;
  opacity: 0.9;
}

.pinfo__inner {
  max-width: 1000px;
  margin: 0 auto;
}
.pinfo__title {
  text-align: center;
  letter-spacing: 0.15em;
  font-weight: 500;
  font-size: clamp(22px, 3.6vw, 40px);
  color: #646567;
  margin: 0 0 43px;
}
.pinfo__title small {
  display: block;
  margin-top: 8px;
  font-size: 0.6em;
  font-weight: 400;
  color: #646567;
}

.pinfo__card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
  padding: 24px 28px 26px;
}

.pinfo__lead {
  text-align: center;
  margin: 0 0 16px;
  font-size: clamp(16px, 2.2vw, 24px);
  color: #646567;
  font-weight: 700;
  letter-spacing: 0.06em;
  border-bottom: 1px solid #a3a3a3;
  padding-bottom: 16px;
}

.u-emp {
  position: relative;
  font-weight: 700;
  font-size: clamp(18px, 3.2vw, 32px);
  letter-spacing: 0.06em;
  color: #646567;
  text-shadow: 2px 0 0 #fff, -2px 0 0 #fff, 0 2px 0 #fff, 0 -2px 0 #fff,
    1px 1px 0 #fff, -1px 1px 0 #fff, 1px -1px 0 #fff, -1px -1px 0 #fff,
    0 4px 6px rgba(0, 0, 0, 0.35), 0 10px 20px rgba(0, 0, 0, 0.12);
}

.pinfo__grid {
  display: grid;
  gap: 18px 40px;
  grid-template-columns: 1.2fr 1fr;
  margin: 6px 0 0;
  align-items: center;
}
.pinfo__col {
  display: grid;
  gap: 12px;
}

.pinfo__row {
  display: grid;
  grid-template-columns: 180px 1fr;
  align-items: baseline;
  gap: 16px;
  padding: 8px 0;
  border-bottom: 1px solid #a3a3a3;
  align-items: center;
}

.pinfo__dt {
  --accent: #00a8c0;
  margin: 0;
  color: var(--water);
  font-weight: 600;
  letter-spacing: 0.03em;
  font-size: 22px;
}
.pinfo__dd {
  margin: 0;
  color: #646567;
  line-height: 1.5;
  font-size: 22px;
  white-space: nowrap;
}
.pinfo__col_right {
  display: flex;
  justify-content: center;
  gap: 20px;
}
.pinfo_product_title {
  font-size: 20px;
  font-weight: 600;
  color: var(--water);
}
.pinfo_product_sub {
  font-size: 16px;
  color: #646567;
}
.pinfo_product_img img {
  max-width: 80px;
}
.pinfo_product_img2 img {
  max-width: 120px;
}
.pinfo_product {
  text-align: center;
  text-decoration: none !important;
}
.pinfo_product:hover{
  opacity: 0.75;
}
.bulk {
  padding: 56px 16px 40px;
  color: #646567;
}
.bulk__inner {
  max-width: 1000px;
  margin: 0 auto;
}
.bulk__title {
  margin: 0 0 18px;
  text-align: center;
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: clamp(20px, 3vw, 30px);
  color: #00a8c0;
}
.bulk__lead {
  margin: 0 auto 28px;
  max-width: 860px;
  line-height: 1.9;
  font-size: 16px;
}
.bulk__items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: end;
  justify-items: center;
}
.bulk__img {
  overflow: hidden;
}
.bulk__img img {
  max-width: 300px;
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.4s ease; 
}
.bulk__img img:hover{
  transform: scale(1.08); 
}
.pinfo__inner2{
  margin-top: 32px;
}.pinfo_product_title2{
  margin-bottom: 12px;
}

/* ===== CTASection ===== */
.cta-purchase {
  background: #ecf6f6;
  color: #646567;
  font-family: var(--font-Montserrat);
}
.cta__inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  gap: 16px;
  justify-content: center;
  align-items: center;
  padding: 32px 0;
}
.cta__text p {
  margin: 0 0 12px;
  line-height: 1.9;
  font-size: 18px;
}
.cta__illust img {
  display: block;
  height: auto;
  width: 250px;
}
.btn-grad {
  --c1: #00a5bf;
  --c2: #0e77ba;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 260px;
  height: 52px;
  padding: 0 22px;
  color: #fff !important;
  text-decoration: none !important;
  background: linear-gradient(90deg, var(--c1), var(--c2));
  border-radius: 999px;
  box-shadow: 0 6px 16px rgba(14, 119, 186, 0.25);
  overflow: hidden;
  font-size: 18px;
}

/* ホバー演出*/
.btn-grad::after {
  content: "";
  position: absolute;
  inset: -40% -20%;
  background: linear-gradient(
    115deg,
    transparent 35%,
    rgba(255, 255, 255, 0.6) 50%,
    transparent 65%
  );
  transform: translateX(-120%);
  transition: transform 1.5s ease;
}
.btn-grad:hover::after {
  transform: translateX(120%);
}

.arr {
  font-size: 20px;
  line-height: 1;
}

/* アニメーション */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.2, 0.65, 0.2, 1);
  will-change: transform, opacity;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
.reveal[data-ani="up"] {
  transform: translateY(22px);
}
.reveal[data-ani="left"] {
  transform: translateX(-22px);
}
.reveal[data-ani="right"] {
  transform: translateX(22px);
}
.reveal[data-ani="scale"] {
  transform: scale(0.98);
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
}
.reveal[data-ani="left"] {
  transform: translateX(-22px);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
[data-stagger] > .reveal {
  transition-delay: calc(var(--i, 0) * 200ms);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .main_fv{
    padding: 0;
  }
  /* 特徴セクション */
  .features {
    padding: 32px 16px;
  }
  .features__tagline p {
    font-size: 16px;
  }
  .features__tagline {
    padding: 10px;
  }
  .features__compare {
    flex-direction: column;
    gap: 0;
  }
  .compare__arrow {
    transform: rotate(90deg);
  }
  .features__desc{
    font-size: 14px;
  }
  /* usageセクション */
  .usage{
    padding: 32px 16px;
  }
  .usage__grid {
    flex-direction: column;
    display: flex;
  }
  .usage__note {
    padding: 10px;
  }
  .usage__note-list li {
    line-height: 1.5;
    margin-bottom: 5px;
  }
  .usage-step__body{
    font-size: 14px;
  }
  .usage-step__title{
    font-size: 18px;
  }
  /* 製品情報セクション */
  .pinfo__title {
    margin: 0 0 24px;
  }
  .pinfo__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .pinfo__row {
    grid-template-columns: 110px 1fr;
  }
  .pinfo__dt {
    font-size: 15px;
    white-space: nowrap;
  }
  .pinfo__dd {
    font-size: 15px;
    white-space: nowrap;
  }
  .pinfo__card {
    padding: 24px 12px;
  }
  .cert__badge {
    margin-top: 10px;
    max-width: 500px;
    width: 100%;
  }
  .pinfo_note {
    font-size: 10px;
    text-align-last: left;
  }
  .pinfo_product_title{
    font-size: 16px;
  }
  .bulk__lead{
    line-height: 1.5;
    font-size: 14px;
  }
  .bulk__items{
    gap: 16px;
  }
  .bulk__items figure{
    margin: 0;
  }
  .cta__inner {
    display: flex;
    flex-direction: column-reverse;
    justify-content: center;
    text-align: center;
    gap: 0;
    padding-bottom: 24px;
  }
  .cta__illust img {
    width: 200px;
    margin-left: auto;
  }
  .cta__text p {
    font-size: 16px;
  }
}