/* ===== Base ===== */
html, body {
  margin: 0;
  padding: 0;
  background: #2C3644;
}
body {
  font-family: 'Zen Kaku Gothic New', 'Noto Sans JP', sans-serif;
  color: #F7F5F0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a {
  color: inherit;
  text-decoration: none;
  transition: opacity .25s ease, color .25s ease;
}
a:hover {
  color: #E4A26B;
}
[hidden] {
  display: none !important;
}

/* ===== S0 固定ヘッダー ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 5.5%;
  background: rgba(44, 54, 68, .58);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.site-header__logo {
  font-family: 'Shippori Mincho', 'Noto Serif JP', serif;
  font-size: 15px;
  letter-spacing: .42em;
  color: #F7F5F0;
}

/* ===== CTA（共通） ===== */
.cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 30px;
  border-radius: 999px;
  font-size: 14px;
  letter-spacing: .1em;
  line-height: 1.6;
}
.cta__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #E4A26B;
  flex-shrink: 0;
}
.cta--dark {
  border: 1px solid rgba(247, 245, 240, .45);
  background: rgba(44, 54, 68, .22);
  color: #F7F5F0;
}
.cta--light {
  border: 1px solid rgba(44, 54, 68, .35);
  background: rgba(44, 54, 68, .03);
  color: #2C3644;
}
.cta--sand {
  background: rgba(247, 245, 240, .4);
}
.cta--sp {
  justify-content: center;
  width: 100%;
  box-sizing: border-box;
  padding: 16px 20px;
  border: 1px solid rgba(247, 245, 240, .45);
  background: rgba(44, 54, 68, .38);
  color: #F7F5F0;
  font-size: 13.5px;
  letter-spacing: .08em;
}

/* ===== S1 ファーストビュー（PC） ===== */
.fv-pc {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #2C3644;
}
.fv-pc__bg {
  position: absolute;
  inset: 0;
}
.fv-pc__img,
.fv-pc__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.fv-pc__glow {
  position: absolute;
  right: 9%;
  bottom: 0;
  width: 9vw;
  height: 4.2vw;
  overflow: hidden;
  pointer-events: none;
}
.fv-pc__glow-circle {
  width: 9vw;
  height: 9vw;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(228, 162, 107, .5), rgba(228, 162, 107, 0) 70%);
}
.fv-pc__h1-wrap {
  position: absolute;
  top: 24%;
  left: 5.5%;
}
.fv-pc__h1 {
  margin: 0;
  font-family: 'Shippori Mincho', 'Noto Serif JP', serif;
  font-weight: 500;
  font-size: clamp(22px, 3.1vw, 54px);
  line-height: 2.05;
  letter-spacing: .14em;
  color: #EDB98A;
}
.fv-pc__bottom {
  position: absolute;
  bottom: 9%;
  left: 5.5%;
  max-width: 58%;
  display: flex;
  flex-direction: column;
  gap: 30px;
  align-items: flex-start;
}
.fv-pc__sub {
  font-weight: 300;
  font-size: 13.5px;
  letter-spacing: .3em;
  line-height: 2.2;
  color: #9FAAB8;
}
.fv-pc__cta-block {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: flex-start;
}
.fv-pc__note {
  font-size: 11.5px;
  letter-spacing: .08em;
  line-height: 2;
  color: #9FAAB8;
}

/* ===== S1 ファーストビュー（SP） ===== */
.fv-sp {
  position: relative;
  width: 100%;
  height: 100svh;
  overflow: hidden;
  background: #2C3644;
}
.fv-sp__bg {
  position: absolute;
  inset: 0;
}
.fv-sp__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.fv-sp__h1-wrap {
  position: absolute;
  top: 15%;
  left: 8%;
  right: 8%;
}
.fv-sp__h1 {
  margin: 0;
  font-family: 'Shippori Mincho', 'Noto Serif JP', serif;
  font-weight: 500;
  font-size: 19px;
  line-height: 2.1;
  letter-spacing: .14em;
  color: #EDB98A;
}
.fv-sp__sub {
  position: absolute;
  top: 34%;
  left: 8%;
  right: 8%;
  font-weight: 300;
  font-size: 13px;
  letter-spacing: .1em;
  line-height: 1.9;
  color: #F7F5F0;
}
.fv-sp__bottom {
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: 7%;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  text-align: center;
}
.fv-sp__note {
  font-size: 10.5px;
  letter-spacing: .06em;
  line-height: 1.9;
  color: rgba(247, 245, 240, .72);
}

/* レスポンシブ分岐（768px 境界） */
@media (max-width: 767px) {
  .fv-pc { display: none; }
}
@media (min-width: 768px) {
  .fv-sp { display: none; }
}

/* ===== S2 共感 ===== */
.s2 {
  background: #2C3644;
  padding: 24vh 8vw;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.s2__inner {
  max-width: 640px;
  width: 100%;
}
.s2__line {
  margin: 0 0 4.5em;
  font-family: 'Shippori Mincho', 'Noto Serif JP', serif;
  font-weight: 400;
  font-size: clamp(16px, 4.2vw, 20px);
  letter-spacing: .12em;
  line-height: 2.1;
  color: rgba(247, 245, 240, .92);
}
.s2__line--last {
  margin-bottom: 5.5em;
}
.s2__close {
  margin: 0;
  font-family: 'Shippori Mincho', 'Noto Serif JP', serif;
  font-weight: 500;
  font-size: clamp(20px, 5.6vw, 28px);
  letter-spacing: .14em;
  line-height: 2;
  color: #EDB98A;
}

/* ===== S3 気圧アラート ===== */
.s3 {
  background: #F0E4D0;
  color: #2C3644;
  padding: 18vh 6vw;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.s3__inner {
  max-width: 720px;
  width: 100%;
  text-align: center;
}
.s3__h2 {
  margin: 0;
  font-family: 'Shippori Mincho', 'Noto Serif JP', serif;
  font-weight: 500;
  font-size: clamp(24px, 5.5vw, 36px);
  letter-spacing: .12em;
  line-height: 1.9;
  color: #2C3644;
}
.s3__body {
  margin: 2.5em auto 0;
  max-width: 36em;
  text-align: left;
  font-size: 15px;
  font-weight: 400;
  letter-spacing: .05em;
  line-height: 2.3;
  color: rgba(44, 54, 68, .85);
}
.talk {
  margin: 4.5em auto 0;
  max-width: 400px;
  background: #DCE1E8;
  border: 1px solid rgba(44, 54, 68, .08);
  border-radius: 20px;
  padding: 20px 16px 24px;
  text-align: left;
}
.talk__header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 4px 14px;
}
.talk__avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #2C3644;
  color: #F7F5F0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Shippori Mincho', 'Noto Serif JP', serif;
  font-size: 12px;
  flex-shrink: 0;
}
.talk__name {
  font-size: 12px;
  letter-spacing: .08em;
  color: rgba(44, 54, 68, .75);
}
.talk__bubbles {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.talk__bubble {
  background: #FBFAF7;
  border-radius: 4px 18px 18px 18px;
  padding: 13px 16px;
  font-size: 13.5px;
  line-height: 2;
  letter-spacing: .03em;
  color: #2C3644;
  max-width: 88%;
  box-shadow: 0 1px 2px rgba(44, 54, 68, .06);
}
.s3__cta-block {
  margin-top: 4em;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.s3__note {
  font-size: 11.5px;
  letter-spacing: .06em;
  line-height: 2;
  color: rgba(44, 54, 68, .6);
}

/* ===== S4 ブランドステートメント ===== */
.s4 {
  position: relative;
  background: #2C3644;
}
.s4__block {
  position: relative;
  overflow: hidden;
}
.s4__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.s4__overlay {
  position: absolute;
  inset: 0;
}
.s4__overlay--night {
  background: linear-gradient(180deg, rgba(44, 54, 68, .55) 0%, rgba(44, 54, 68, 0) 22%, rgba(44, 54, 68, 0) 70%, #2C3644 100%);
}
.s4__overlay--twilight {
  background: linear-gradient(180deg, #2C3644 0%, rgba(44, 54, 68, 0) 30%, rgba(44, 54, 68, 0) 68%, #2C3644 100%);
}
.s4__overlay--dawn {
  background: linear-gradient(180deg, #2C3644 0%, rgba(44, 54, 68, 0) 32%, rgba(44, 54, 68, 0) 100%);
}
.s4__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.s4__content--night {
  padding: 22vh 8vw 38vh;
}
.s4__content--twilight {
  padding: 20vh 8vw 34vh;
}
/* 下 padding 42vh：最終連の文字を画面の下1/3に入れないための制約。維持すること */
.s4__content--dawn {
  padding: 18vh 8vw 42vh;
}
.s4__inner {
  max-width: 640px;
  width: 100%;
  text-align: center;
}
.s4__stanza {
  margin: 0;
}
.s4__stanza--spaced {
  margin: 0 0 14vh;
}
.s4__small {
  margin: 0;
  font-family: 'Shippori Mincho', 'Noto Serif JP', serif;
  font-weight: 400;
  font-size: clamp(16px, 4.2vw, 20px);
  letter-spacing: .14em;
  line-height: 2.35;
  color: #F7F5F0;
}
.s4__large {
  margin: .35em 0 0;
  font-family: 'Shippori Mincho', 'Noto Serif JP', serif;
  font-weight: 500;
  font-size: clamp(21px, 5.8vw, 31px);
  letter-spacing: .16em;
  line-height: 2.1;
  color: #F7F5F0;
}
.s4__large--first {
  margin: 0;
}
.s4__small--follow {
  margin: .35em 0 0;
}

/* ===== S5 ことばの検証 ===== */
.s5 {
  background: #F0E4D0;
  color: #2C3644;
  padding: 14vh 8vw;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.s5__glow {
  height: 26px;
  overflow: hidden;
  margin: 0 auto 6vh;
  width: 52px;
}
.s5__glow-circle {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 45%, rgba(228, 162, 107, .7), rgba(228, 162, 107, 0) 72%);
}
.s5__question {
  margin: 0;
  font-family: 'Shippori Mincho', 'Noto Serif JP', serif;
  font-weight: 400;
  font-size: clamp(17px, 4.6vw, 22px);
  letter-spacing: .12em;
  line-height: 2;
  color: #2C3644;
}
.s5__choices {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 3.5em;
}
.s5__btn {
  font-family: 'Zen Kaku Gothic New', 'Noto Sans JP', sans-serif;
  font-size: 13.5px;
  letter-spacing: .1em;
  padding: 12px 30px;
  border-radius: 999px;
  border: 1px solid rgba(44, 54, 68, .28);
  background: transparent;
  color: rgba(44, 54, 68, .85);
  cursor: pointer;
}
.s5__thanks {
  margin: 3.5em 0 0;
  font-size: 14px;
  letter-spacing: .06em;
  line-height: 2.2;
  color: rgba(44, 54, 68, .75);
}

/* ===== S6 製品ティザー ===== */
.s6 {
  background: #EFDBC1;
  color: #2C3644;
  padding: 16vh 6vw;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.s6__inner {
  max-width: 680px;
  width: 100%;
}
.s6__h2 {
  margin: 0;
  font-family: 'Shippori Mincho', 'Noto Serif JP', serif;
  font-weight: 500;
  font-size: clamp(24px, 5.5vw, 34px);
  letter-spacing: .12em;
  line-height: 1.9;
  color: #2C3644;
}
.s6__lead {
  margin: 2.5em 0 0;
  font-weight: 300;
  font-size: 14.5px;
  letter-spacing: .08em;
  line-height: 2.4;
  color: rgba(44, 54, 68, .75);
}
.s6__img {
  display: block;
  width: min(340px, 64vw);
  margin: 4em auto 0;
}
.s6__product {
  margin: 2.5em 0 0;
  font-family: 'Shippori Mincho', 'Noto Serif JP', serif;
  font-weight: 500;
  font-size: clamp(19px, 4.8vw, 26px);
  letter-spacing: .12em;
  line-height: 1.9;
  color: #2C3644;
}
.s6__desc {
  margin: 1.5em auto 0;
  max-width: 32em;
  font-size: 14.5px;
  letter-spacing: .05em;
  line-height: 2.3;
  color: rgba(44, 54, 68, .8);
}
.s6__extra {
  margin: 2em auto 0;
  font-size: 13px;
  letter-spacing: .06em;
  line-height: 2.2;
  color: rgba(44, 54, 68, .65);
}
.s6__cta-block {
  margin-top: 3em;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.s6__note {
  font-size: 11.5px;
  letter-spacing: .06em;
  line-height: 2;
  color: rgba(44, 54, 68, .6);
}

/* ===== S7 ストーリー ===== */
.s7 {
  background: #F0E4D0;
  color: #2C3644;
  padding: 16vh 6vw;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.s7__inner {
  max-width: 680px;
  width: 100%;
  text-align: center;
}
.s7__h2 {
  margin: 0;
  font-family: 'Shippori Mincho', 'Noto Serif JP', serif;
  font-weight: 500;
  font-size: clamp(24px, 5.5vw, 34px);
  letter-spacing: .12em;
  line-height: 1.9;
  color: #2C3644;
}
.s7__body {
  margin: 2.5em auto 0;
  max-width: 36em;
  text-align: left;
  font-size: 15px;
  letter-spacing: .05em;
  line-height: 2.4;
  color: rgba(44, 54, 68, .85);
}
.s7__img {
  display: block;
  width: min(440px, 82vw);
  margin: 4em auto 0;
  border-radius: 2px;
}

/* ===== S8 フッター ===== */
.s8 {
  background: #2C3644;
  padding: 14vh 6vw 7vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.s8__glow {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  margin: 0 auto 7vh;
  background: radial-gradient(circle at 50% 42%, #EDB98A 0%, rgba(228, 162, 107, .4) 58%, rgba(228, 162, 107, 0) 74%);
  box-shadow: 0 0 70px rgba(228, 162, 107, .28);
}
.s8__close {
  margin: 0;
  font-family: 'Shippori Mincho', 'Noto Serif JP', serif;
  font-weight: 400;
  font-size: clamp(16px, 4.4vw, 21px);
  letter-spacing: .14em;
  line-height: 2;
  color: #F7F5F0;
}
.s8__links {
  display: flex;
  gap: 28px;
  margin-top: 7vh;
}
.s8__link {
  font-size: 11.5px;
  letter-spacing: .08em;
  color: #9FAAB8;
  text-decoration: underline;
  text-decoration-color: rgba(159, 170, 184, .4);
  text-underline-offset: 3px;
}
.s8__logo {
  margin-top: 5vh;
  font-family: 'Shippori Mincho', 'Noto Serif JP', serif;
  font-size: 12px;
  letter-spacing: .42em;
  color: rgba(247, 245, 240, .55);
}