@charset "UTF-8";
/* ============== 基本・共通 ============= */
:root {
  --brown: #736357;
  --deep-brown: #4d2424;
  --pink: #c98fa4;
  --soft-pink: #f8edef;
  --gold: #b99a6b;
  --line: #d9ceca;
  --white: #fff;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: serif;
  color: var(--brown);
  background: var(--white);
}

body.menu-open {
  overflow: hidden;
}

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

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

ul,
li {
  list-style: none;
}

section {
  padding: 80px 0 60px;
}

.section-inner {
  max-width: 1200px;
  width: 90%;
  margin: auto;
}

/* ============== スクロールアニメーション ============= */

.fade-in {
  opacity: 0;
  transform: translateY(25px);
  transition: opacity 1s ease, transform 1s cubic-bezier(.2, .7, .2, 1);
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============== ヘッダー ============= */

header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  width: 100%;
  height: 70px;
  background: rgba(255, 255, 255, .98);
  border-bottom: 1px solid rgba(115, 99, 87, .12);
  box-shadow: 0 2px 15px rgba(77, 36, 36, .08);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-20px);
  transition:
    opacity .4s ease,
    visibility .4s ease,
    transform .4s ease;
}
/* スクロールしたら表示 */
header.scrolled {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
/* スクロール後 */
header.scrolled {
  background: rgba(255, 255, 255, .98);
  border-bottom: 1px solid rgba(115, 99, 87, .12);
  box-shadow: 0 2px 15px rgba(77, 36, 36, .08);
}
.header-inner {
  max-width: 1200px;
  width: 90%;
  height: 100%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  width: 160px;
  display: flex;
  justify-content: center;
}
.logo img {
  width: 100%;
}

/* ============== PC NAV ============= */
.pc-nav ul {
  display: flex;
  gap: 30px;
}
.pc-nav a {
  color: var(--brown);
  font-size: 14px;
  letter-spacing: .05em;
  display: inline-block;
  transition:
    color .3s ease,
    transform .3s ease;
}
.pc-nav a:hover {
  color: var(--pink);
  transform: translateY(-1px);
}
/* ============== SPメニューボタン ============= */
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 10px;
  border: none;
  background: transparent;
  cursor: pointer;
  position: relative;
  z-index: 1100;
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  margin: 5px auto;
  background: var(--brown);
  transition:
    transform .3s ease,
    opacity .3s ease;
}

/* ハンバーガー → × */
.menu-toggle.is-open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.menu-toggle.is-open span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.is-open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}
/* ============== SP NAV ============= */
.sp-nav {
  display: none;
}

/* ============== キービジュアル ============= */
.key {
  border-top: 1px solid #a59c96;
  border-bottom: 1px solid #a59c96;
  overflow: hidden;

  position: relative;
  width: 100%;
  padding: 0;
}
.key picture,
.key picture img {
  display: block;
  width: 100%;
}
.key img {
  animation: keyZoom 2.2s cubic-bezier(.2, .7, .2, 1) both;
}

@keyframes keyZoom {
  from {
    transform: scale(1.045);
    opacity: .75;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

@media (max-width: 767px) {
  .key img {
    animation: none;
  }
}

/* ============== コンセプト ============= */
#concept {
  text-align: center;
}
#concept .section-inner {
  padding-bottom: 80px;
  border-bottom: 1px solid var(--line);
}
.section-label {
  margin-bottom: 30px;
  font-family: serif;
  font-size: 12px;
  font-weight: normal;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--gold);
}
#concept h1 {
  width: 45%;
  max-width: 240px;
  margin: 30px auto 35px;
  transition-delay: .15s;
}
#concept .concept-text {
  display: inline-block;
  max-width: 900px;
  font-size: clamp(0.875rem, 0.761rem + 0.485vw, 1.125rem);
  line-height: 2;
  text-align: center;
  transition-delay: .3s;
}

/* ============== シリーズ ============= */
#series {
  overflow: hidden;
}

#series .section-inner {
  position: relative;
  padding-bottom: 80px;
}

#series .section-inner::before,
#series .section-inner::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
}
#series .section-inner::before {
  width: 400px;
  height: 400px;
  left: -200px;
  top: -50px;
    background: radial-gradient(
    circle,
    rgba(247, 222, 231, .55) 0%,
    rgba(247, 222, 231, 0) 70%
  );
}
#series .section-inner::after {
  width: 400px;
  height: 400px;
  right: -250px;
  bottom: 0px;
    background: radial-gradient(
    circle,
    rgba(248, 236, 220, .45) 0%,
    rgba(248, 236, 220, 0) 70%
  );
}
#series h2 {
  margin-top: 10px;
  font-family: serif;
  font-size: clamp(2rem, 1.716rem + 1.212vw, 2.625rem);
  font-weight: normal;
  letter-spacing: .05em;
}
.series-list {
  margin-top: 70px;
  display: flex;
  flex-direction: column;
  gap: 120px;
}
.series-item {
  display: flex;
  align-items: center;
  gap: 48px;
}
.series-item:nth-child(even) {
  flex-direction: row-reverse;
}
.series-item .img-box {
  width: 60%;
  overflow: hidden;
}
.series-item .img-box img {
  transition: transform .7s ease;
}
.series-item .img-box:hover  img {
  transform: scale(1.03);
}
.series-info {
  flex: 1;
}
.series-number {
  display: block;
  margin-bottom: 15px;
  font-size: clamp(0.625rem, 0.568rem + 0.242vw, 0.75rem);
  letter-spacing: .25em;
  color: var(--gold);
}
.series-info h3 {
  font-family: serif;
  font-size: clamp(1.5rem, 1.273rem + 0.97vw, 2rem);
  font-weight: normal;
  letter-spacing: .04em;
}
.series-info h3 span {
  display: block;
  font-size: clamp(0.75rem, 0.693rem + 0.242vw, 0.875rem);
  letter-spacing: .15em;
}
.series-info a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 30px;
  width: 180px;
  padding: 14px 0;
  border-bottom: 1px solid var(--brown);
  font-family: serif;
  font-size: clamp(0.75rem, 0.693rem + 0.242vw, 0.875rem);
  letter-spacing: .15em;
  transition:
    color .3s ease,
    border-color .3s ease;
}
.series-info a > span {
  margin-left: 15px;
  transition:
    transform .3s ease;
}
.series-info a:hover {
  color: var(--pink);
  border-color: var(--pink);
}
.series-info a:hover > span {
  transform: translateX(5px);
}

/* ============== タグライン ============= */
#taglines {
  position: relative;
  overflow: hidden;
  padding: 130px 20px;
  text-align: center;
  background:
    linear-gradient(
      120deg,
      #fde8ed,
      #fff 45%,
      #fff 55%,
      #fde8ed
    );
  border-top: 1px solid #a59c96;
  border-bottom: 1px solid #a59c96;
}
#taglines .section-inner {
  position: relative;
  z-index: 1;
  width: 92%;
}
#taglines p:first-child {
  font-family: serif;
  font-size: clamp(0.875rem, 0.705rem + 0.727vw, 1.25rem);
  line-height: 1.8;
  letter-spacing: .05em;
  text-shadow: 1px 1px #fff;
}
#taglines p:last-child {
  margin-top: 20px;
  font-size: clamp(0.75rem, 0.665rem + 0.364vw, 0.938rem);
  line-height: 1.8;
  letter-spacing: .08em;
}

/* ============== リンク ============= */
#links {
  padding: 60px 0;
}
.link-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.link-card {
  position: relative;
  padding: 30px 40px;
  border: 1px solid rgba(115, 99, 87, .35);
  background: #fff;
  text-align: center;
  transition:
    background-color .4s ease,
    transform .4s ease,
    border-color .4s ease;
}
.link-card:hover {
  background-color: var(--soft-pink);
  border-color: rgba(201, 143, 164, .5);
  transform: translateY(-3px);
}
.link-card span {
  display: block;
  font-family: serif;
  font-size: 16px;
  letter-spacing: .2em;
}
.link-card small {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: .08em;
}

/* ============== フッター ============= */
footer {
  background-color: var(--deep-brown);
  color: var(--white);
  text-align: center;
  font-size: 12px;
  padding: 2em 0;
}

/* ★☆★☆★ ============== レスポンシブ（SP） ============= ★☆★☆★ */
@media (max-width: 767px) {
  section {
    padding: 60px 0 40px;
  }
  .section-inner {
    width: 88%;
  }

  /* ============== ヘッダー ============= */
  header {
    height: 60px;
  }
  .header-inner {
    width: 92%;
  }
  .logo {
    width: 120px;
  }

  /* PC NAVを非表示 */
  .pc-nav {
    display: none;
  }
  /* ハンバーガー表示 */
  .menu-toggle {
    display: block;
  }

  /* ============== SP NAV ============= */
  .sp-nav {
    display: block;
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    height: calc(100vh - 60px);
    background: rgba(255, 255, 255, .96);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-10px);
    transition:
      opacity .35s ease,
      transform .35s ease,
      visibility .35s ease;
    overflow-y: auto;
  }
  .sp-nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }
  .sp-nav ul {
    width: 88%;
    margin: 0 auto;
    padding: 50px 0;
  }
  .sp-nav li {
    border-bottom: 1px solid var(--line);
  }
  .sp-nav li:first-child {
    border-top: 1px solid var(--line);
  }
  .sp-nav a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 22px 10px;
    font-family: serif;
    font-size: 16px;
    letter-spacing: .12em;
    color: var(--brown);
  }
  .sp-nav a::after {
    content: "→";
    font-size: 14px;
    color: var(--gold);
  }
  /* ============== キービジュアル ============= */
  .key img {
    width: 100%;
  }
  /* ============== コンセプト ============= */
  .section-label {
    margin-bottom: 20px;
    font-size: 10px;
  }
  #concept .section-inner {
    padding-bottom: 60px;
  }
  #concept h1 {
    width: 60%;
    margin-top: 16px;
    margin-bottom: 25px;
  }
  #concept .concept-text {
    line-height: 2;
    text-align: left;
  }
  /* ============== シリーズ ============= */
  section#series{
    padding-top: 20px;
  }
  #series .section-inner{
    padding-bottom: 60px;
  }
  .series-list {
    margin-top: 50px;
    gap: 60px;
  }
  .series-item,
  .series-item:nth-child(even) {
    flex-direction: column;
    align-items: stretch;
    gap: 24px;
  }
  .series-item .img-box {
    width: 100%;
  }
 .series-info {
    padding: 0 12px;
    border-bottom: 1px solid var(--line);
  }
  .series-number {
    margin-bottom: 0px;
  }
  .series-info a{
    border: none;
    margin-top: 0px;
    margin-left: auto;
    text-align: right;
    display: block;
    font-size: 10px;
  }

  #series .section-inner::before{
    left: -150px;
  }
  #series .section-inner::after{
    right: -200px;
  }
  /* ============== タグライン ============= */
  #taglines {
    padding: 60px 0px;
  }

  /* ============== リンク ============= */
  #links {
    padding: 40px 0;
  }
  .link-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  .link-card {
    padding: 16px;
  }
}