@charset "utf-8";


.content-container {
  font-size: 15px;
  line-height: 1.6;
  color: #333;
  --color-main: #3b335f;
  --color-accent: #f75800;
  --color-gold: #f5b000;
  --color-silver: #bfc8d2;
  --color-bronze: #d78353;
}

.content-container img {
  max-width: 100%;
  height: auto;
  vertical-align: bottom;
  object-fit: contain;
}

.content-container a {
  color: inherit;
  text-decoration: none;
}

.content-container a:hover {
  opacity: 0.85;
}

/* header */
.content-container header {
  background: url(../img/top.jpg?z) right center;
  background-size: 120%;
}

.content-container .header-inner {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
}

.content-container .header-inner:before {
  content: "";
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(119deg, /* 角度 */ #ffffff6b 0%, /* 開始色 */ #ffffff6b 45%, /* 色が続く位置 */ transparent 70% /* 終了色 */);
}

.content-container .header-inner > div {
  position:relative;
}

.content-container .ttl-header {
  font-size: 40px;
  font-weight: bold;
  line-height: 1;
  margin-bottom: 0.3em;
}

.content-container .ttl-header span {
  font-weight: bold;
  color: var(--color-accent);
}

.content-container .lead {
  line-height: 1.7;
  margin-bottom: 1em;
  padding-right: 43%;
}

.content-container .wrap-service {
  display: flex;
  gap: 16px;
  padding-right: 41%;
}

.content-container .box-service {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 4px 8px;
  font-size: 13px;
  border-radius: 8px;
}

.content-container .box-service img {
  background: var(--color-main);
  border-radius: 50%;
  padding: 8px;
  box-sizing: border-box;
  width: 50px;
  aspect-ratio: 1 / 1;
}

.content-container .ttl-service {
  font-weight: bold;
  font-size: 14px;
}

@container content-container (width < 880px) {
  .content-container .wrap-service {
    justify-content: center;
  }
  .content-container .box-service {
    grid-template-columns: 1fr;
  }

  .content-container .box-service img {
    grid-row: 1;
    justify-self: center;
  }
}

@container content-container (width < 860px) {
  .content-container .lead {
    padding: 0;
    text-shadow: 1px 1px 0 rgba(255, 255, 255, 0.8);
  }
}

@container content-container (width < 680px) {
  .content-container header {
    background: #eeeef2;
  }

  .content-container .header-inner {
    padding: 16px;
    gap: 8px;
  }

  .content-container .ttl-header {
    font-size: 28px;
  }

  .content-container .lead {
    padding-bottom: 65%;
    background-image: url(../img/top_sp.jpg);
    background-position: bottom;
    background-size: contain;
    background-repeat: no-repeat;
  }

}

@container content-container (width < 480px) {
  .content-container .wrap-service {
    flex-direction: column;
  }

  .content-container .box-service {
    grid-template-columns: auto 1fr;
  }

  .content-container .box-service img {
    grid-row: 1 / 3;
  }
}

/* ---------- section 共通 ---------- */
.content-container .sec {
  margin: 48px auto 0;
  padding-inline: 16px;
}

.content-container .ttl-sec {
  font-weight: bold;
  font-size: 22px;
  margin: 2.5em 0 1.5em;
  padding-left: 12px;
  border-left: 6px solid var(--color-main);
  line-height: 1.3;
  @media (max-width: 800px){
    font-size: 18px;
  }
}

.content-container .note-sec {
  font-size: 13px;
  color: #777;
  margin-bottom: 12px;
}

/* ---------- カテゴリーから選ぶ ---------- */
.content-container .wrap-type {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.content-container .box-type a {
  display: block;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 0 6px rgba(0, 0, 0, 0.15);
}

.content-container .box-type a div {
  height:180px;
  display:grid;
  place-items:center;
}

.content-container .box-type a img {
  height: 140px;
  object-fit: contain;
}

.content-container .ttl-type {
  background: var(--color-main);
  color: #fff;
  font-weight: bold;
  text-align: center;
  padding: 10px 8px;
  min-height: 47px;
  display: flex;
  justify-content: center;
  align-items: center;
}

@media (width < 700px) {
  .content-container .wrap-type {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- おすすめブランドから選ぶ ---------- */

.content-container .wrap-brand {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

.content-container .box-brand {
  width: calc((100% - 32px) / 3);
  display: flex;
}

.content-container .box-brand a {
  width: 100%;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.2);
  color: #333;
}

.content-container .box-brand figure {
  margin: 0;
  padding: 8px;
  text-align: center;
  height: 80px;
  display: grid;
  place-items: center;
}

.content-container .box-brand figure img {
  width: 250px;
  max-height: 44px;
}

.content-container .box-brand div {
  display: flex;
  align-items: center;
  aspect-ratio: 3 / 1.1;
  padding: 16px;
  position: relative;
}

.content-container .box-brand div::before {
  position: absolute;
  display: block;
  content: "";
  inset: 0;
  background-color: #fff;
  opacity: 0;
  transition: opacity 0.3s;
}

.content-container .box-brand a:hover div::before {
  opacity: 0.9;
}

.content-container .box-brand:nth-child(1) div {
  background: url(../img/playtech_thumb.jpg) center center / cover;
}

.content-container .box-brand:nth-child(2) div {
  background: url(../img/roland_thumb.jpg) center center / cover;
}

.content-container .box-brand:nth-child(3) div {
  background: url(../img/yamaha_thumb.jpg) center center / cover;
}

.content-container .box-brand:nth-child(4) div {
  background: url(../img/atv_thumb.jpg) center center / cover;
}

.content-container .box-brand:nth-child(5) div {
  background: url(../img/pearl_thumb.jpg) center center / cover;
}

.content-container .box-brand:nth-child(6) div {
  background: url(../img/korg_thumb.jpg) center center / cover;
}

.content-container .box-brand p {
  position: relative;
  opacity: 0;
  transition: opacity 0.3s;
}

.content-container .box-brand a:hover p {
  opacity: 1;
  color: black;
}

@media (width < 700px) {
  .content-container .box-brand {
    width: calc(50% - 8px);
  }
}

@media (hover: none) {
  .content-container .box-brand div::before {
    opacity: 0.8;
  }

  .content-container .box-brand p {
    opacity: 1;
  }
}

/* ---------- 価格帯・用途・ブランド別おすすめ ---------- */
.content-container .wrap-tbl {
  overflow-x: auto;
}

.content-container .tbl {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

.content-container .tbl th,
.content-container .tbl td {
  border: 1px solid #ddd;
  padding: 10px;
  text-align: center;
}

.content-container .tbl th {
  background: var(--color-main);
  color: #fff;
}

.content-container .tbl .row-label {
  background: #f3f3f3;
  font-weight: bold;
  color: black;
}

.content-container .tbl .row-label img {
  width:120px;
  height:24px;
}

.content-container .tbl a {
  color: var(--color-main);
  text-decoration: underline;
}

/* ---------- 電子ドラムがおすすめの理由 ---------- */
.content-container .list-reason {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.content-container .list-reason li {
  background: #f8f8f8;
  border-radius: 8px;
  padding: 20px 16px;
}

.content-container .list-reason li:last-child {
  background:none;
  display: grid;
  place-items: center;
  padding: 10%;
  @media (max-width: 801px){
    padding: 2%;
    img {
      width:70%;
    }
  }
}

.content-container .ico-reason {
  display: block;
  font-size: 30px;
  margin-bottom: 15px;
}

.content-container .ttl-reason {
  font-weight: bold;
  color: var(--color-main);
  margin-bottom: 10px;
  text-align: center;
}

@media (width < 700px) {
  .content-container .list-reason {
    grid-template-columns: 1fr 1fr;
  }
}

@media (width < 500px) {
  .content-container .list-reason {
    grid-template-columns: 1fr;
  }
}

/* ---------- 売上ランキング（タブ共通） ---------- */
.content-container .wrap-tab input[type="radio"] {
  display: none;
}

.content-container .tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.content-container .tabs label {
  flex: 1 1 auto;
  text-align: center;
  padding: 12px 8px;
  background: #eee;
  border-radius: 100px;
  cursor: pointer;
  font-size: 16px;
  font-weight: bold;
  color: #666;
  transition: background-color 0.2s, color 0.2s;
}

.content-container .tab-content {
  display: none;
}

#tab-radio-1:checked ~ .tab-content#tab-content-1,
#tab-radio-2:checked ~ .tab-content#tab-content-2,
#tab-radio-3:checked ~ .tab-content#tab-content-3,
#tab-radio-4:checked ~ .tab-content#tab-content-4,
#brand-tab-1:checked ~ .tab-content#brand-content-1,
#brand-tab-2:checked ~ .tab-content#brand-content-2,
#brand-tab-3:checked ~ .tab-content#brand-content-3,
#brand-tab-4:checked ~ .tab-content#brand-content-4 {
  display: block;
}

#tab-radio-1:checked ~ .tabs label[for="tab-radio-1"],
#tab-radio-2:checked ~ .tabs label[for="tab-radio-2"],
#tab-radio-3:checked ~ .tabs label[for="tab-radio-3"],
#tab-radio-4:checked ~ .tabs label[for="tab-radio-4"],
#brand-tab-1:checked ~ .tabs label[for="brand-tab-1"],
#brand-tab-2:checked ~ .tabs label[for="brand-tab-2"],
#brand-tab-3:checked ~ .tabs label[for="brand-tab-3"],
#brand-tab-4:checked ~ .tabs label[for="brand-tab-4"] {
  background: var(--color-main);
  color: #fff;
}

/* ---------- 売上ランキング ---------- */

.content-container .list-ranking {
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.2);
  border-radius: 8px;
  overflow: hidden;
}

.content-container .list-ranking li a {
  display: grid;
  grid-template-columns: auto 150px 1fr;
  gap: 4px 24px;
  align-items: center;
  padding: 16px 32px;
  color: #444;
  position: relative;
  grid-template-areas:
    "rank-num img brand"
    "rank-num img name"
    "rank-num img comment";
}

.content-container .list-ranking li + li {
  border-top: 1px solid #eee;
}

.content-container .list-ranking .rank-num {
  grid-area: rank-num;
  @media (max-width: 801px){
    position:absolute;
    left:15px;
  }
}

.content-container .list-ranking .rank-num span {
  display: flex;
  justify-content: center;
  align-items: center;

  width: 24px;
  height: 32px;

  color: #fff;
  font-weight: bold;
  font-size: 18px;

  background: #888;
}

.content-container .list-ranking li.rank-1 .rank-num span {
  background: var(--color-gold);
}

.content-container .list-ranking li.rank-2 .rank-num span {
  background: var(--color-silver);
}

.content-container .list-ranking li.rank-3 .rank-num span {
  background: var(--color-bronze);
}

.content-container .list-ranking li a:hover {
  background: #f3f3f3;
}

.content-container .list-ranking .img {
  grid-area: img;
  width: 150px;
}

.content-container .list-ranking .img img {
  border-radius: 4px;
}

.content-container .list-ranking .brand {
  grid-area: brand;
  color: #888;
  font-weight: bold;
}

.content-container .list-ranking .name {
  grid-area: name;
  font-weight: bold;
  font-size: 18px;
  color: var(--color-main);
}

.content-container .list-ranking .comment {
  grid-area: comment;
  color: #666;
}

@media (width < 800px) {
  .content-container .list-ranking li a {
    /* grid-template-columns: auto 100px 1fr; */
    gap: 8px;
    padding: 8px;
  }

  .content-container .list-ranking .img {
    /* width: 100px; */
  }

  .content-container .list-ranking .name {
    font-size: 16px;
  }
}

@media (width < 600px) {
  .content-container .list-ranking li a {
    display: flex;
    flex-direction: column;
    padding: 15px;
  }

  .content-container .list-ranking .img {
    width: 100%;
    max-width: 270px;
  }

  .content-container .list-ranking .brand,
  .content-container .list-ranking .name,
  .content-container .list-ranking .comment {
    grid-column: 3;
  }
}

/* ---------- ユーザーがおすすめする人気アイテム ---------- */
.content-container .wrap-review {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.content-container .box-review {
  position:relative;
}

.content-container .box-review:before {
  content:"";
  position:absolute;
  display:block;
  background:url(../img/ai_summary_mark.png) center / 100% no-repeat;
  aspect-ratio:1;
  width: 77px;
  /* height:100px; */
  right: -10px;
  top: -8px;
  z-index:2;
  rotate: 25deg;
}

.content-container .box-review a {
  position: relative;
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 16px;
  padding: 16px;
  box-shadow: 0 0 6px rgba(0, 0, 0, 0.12);
  border-radius: 8px;
  place-items: center;
}

.content-container .rank-badge {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 20px;
  width: 24px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: bold;
  font-size: 18px;
  background: #888;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.25);
  margin: auto;
}

.content-container .box-review:nth-child(1) .rank-badge {
  background: var(--color-gold);
}

.content-container .box-review:nth-child(2) .rank-badge {
  background: var(--color-silver);
}

.content-container .box-review:nth-child(3) .rank-badge {
  background: var(--color-bronze);
}

.content-container .box-review img {
  border-radius: 6px;
}

.content-container .rating-star {
  color: var(--color-accent);
}

.content-container .rank-review {
  font-weight: bold;
  margin-bottom: 4px;
}

.content-container .name-review {
  font-weight: bold;
  color: var(--color-main);
  margin-bottom: 4px;
}

.content-container .desc-review {
  color: #555;
}

@media (width < 600px) {
  .content-container .box-review a {
    grid-template-columns: 1fr;
  }
  .content-container .rank-badge {
      margin-bottom:auto;
      top: 20px;
      bottom: auto;
  }

}

/* ---------- もっと知りたい方へ ---------- */
.content-container .list-blog {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  list-style: none;
  padding: 0;
}

.content-container .list-blog a {
  display: block;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 0 6px rgba(0, 0, 0, 0.12);
}

.content-container .list-blog img {
  aspect-ratio: 600 / 450;
  object-fit: cover;
}

.content-container .list-blog p {
  padding: 8px 10px;
  text-align: center;
  background: #fff;
}

@media (width < 700px) {
  .content-container .list-blog {
    grid-template-columns: 1fr 1fr;
  }
}


/* ==========================================================
   動画でチェック（sample形式のswiper動画に対応）
   ========================================================== */
.content-container .wrap-video.swiper-video {
  container-type: inline-size;
  --swiper-theme-color: #fff;
  --swiper-navigation-size: 32px;
}

.content-container .list-video.swiper-wrapper {
  display: flex;
  overflow: visible;
  padding: 4px 0;
  margin: 0;
  list-style: none;
}

.content-container .box-video.swiper-slide {
  position: relative;
  width: 196px;
  flex: none;
}

/* 旧デザインの▲アイコン(::before)を無効化 */
.content-container .box-video.swiper-slide a::before {
  content: none;
}

.content-container .box-video.swiper-slide a:hover {
  display: block;
  text-decoration: underline;
}

.content-container .box-video.swiper-slide a::after {
  content: "";
  position: absolute;
  display: block;
  width: 100%;
  aspect-ratio: 480 / 360;
  top: 0;
  left: 0;
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" height="100%" version="1.1" viewBox="0 0 68 48" width="100%" fill="%23ffffff"><path d="M66.52,7.74c-0.78-2.93-2.49-5.41-5.42-6.19C55.79,.13,34,0,34,0S12.21,.13,6.9,1.55 C3.97,2.33,2.27,4.81,1.48,7.74C0.06,13.05,0,24,0,24s0.06,10.95,1.48,16.26c0.78,2.93,2.49,5.41,5.42,6.19 C12.21,47.87,34,48,34,48s21.79-0.13,27.1-1.55c2.93-0.78,4.64-3.26,5.42-6.19C67.94,34.95,68,24,68,24S67.94,13.05,66.52,7.74z" fill="%23f00"></path><path d="M 45,24 27,14 27,34" fill="%23fff"></path></svg>') no-repeat center center;
  background-size: 30%;
  transition: 0.3s;
  opacity: 0.5;
  filter: grayscale(10%);
}

.content-container .box-video.swiper-slide a:hover::after {
  filter: grayscale(0);
  opacity: 0.9;
}

.content-container .box-video.swiper-slide img {
  border-radius: 8px;
  aspect-ratio: 480 / 360;
  object-fit: cover;
}

.content-container .name-video {
  color: #444;
  margin-top: 8px;
  font-size: 14px;
}

.content-container .wrap-video .swiper-button-prev,
.content-container .wrap-video .swiper-button-next {
  background: rgba(0, 0, 0, 0.5);
  padding: 8px;
  transition: opacity 0.3s;
  top: 86px;
}

.content-container .swiper-button-disabled {
  opacity: 0;
}

.content-container .wrap-video.swiper-video + .block-other-link {
    margin-top:20px;
}

@media (width < 800px) {
  .content-container .wrap-video.swiper-video {
    overflow-x: auto;
    margin-inline: -16px;
    padding-inline: 16px;
  }

  .content-container .box-video.swiper-slide {
    width: 160px;
  }

  .content-container .wrap-video .swiper-button-prev,
  .content-container .wrap-video .swiper-button-next {
    display: none;
  }
}



/* ---------- よくある質問 ---------- */
.content-container .list-faq {
  gap: 10px;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  @media (max-width: 600px){
  grid-template-columns: repeat(1, 1fr);
  }
}

.content-container .list-faq details {
  border: 1px solid #ddd;
  border-radius: 8px;
  overflow: hidden;
}

.content-container .list-faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 16px;
  cursor: pointer;
  font-weight: bold;
  color: var(--color-main);
  background: #f7f7fa;
  list-style: none;
}

.content-container .list-faq summary::-webkit-details-marker {
  display: none;
}

.content-container .list-faq summary::after {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--color-main);
  border-bottom: 2px solid var(--color-main);
  transform: rotate(45deg);
  transition: transform 0.2s;
}

.content-container .list-faq [open] summary::after {
  transform: rotate(-135deg);
}

.content-container .list-faq .answer {
  padding: 12px 16px;
  color: #555;
}

.content-container .list-faq .answer::before {
  content: "A. ";
  font-weight: bold;
  color: var(--color-main);
}

/* ---------- 末尾のリンク ---------- */
.content-container .block-other-link {
  max-width: 1000px;
  margin: 48px auto 32px;
  padding-inline: 16px;
  text-align: center;
}

.content-container .box-other-link a {
  display: inline-block;
  padding: 12px 40px;
  border: 2px solid var(--color-main);
  color: var(--color-main);
  font-weight: bold;
  border-radius: 4px;
  font-size: 20px;
}

.content-container .box-other-link a:hover {
  background: var(--color-main);
  color: #fff;
  opacity: 1;
}

@media (max-width: 800px){
  .content-container header {
    height:auto;
    background-size: cover;
  }
  
  .content-container .header-inner {
    padding: 20px;
  }
  
  .content-container .tbl .row-label {
    position: sticky;
    left: 0;
  }
  
  .content-container .tbl th:first-child {
    position: sticky;
    left: 0;
  }
  
  .content-container .tbl {
    font-size: 12px;
    width: 520px;
  }

  .content-container .box-other-link a {
    font-size: 16px;
    padding: 10px 40px;
  }
  
  .content-container .box-brand div {
    height: 100%;
    aspect-ratio: auto;
    align-items: baseline;
  }
  
  .content-container .box-brand figure img {
    width: 124px;
    max-height: 34px;
  }
  
  .content-container .box-brand figure {
    height: 60px;
  }
  
  .content-container .lead {
  padding-right: 0;
  }
  
  .content-container .header-inner:before {
    background: #ffffffbd;
  }
  
  .content-container .wrap-service {
    padding-right: 0;
    flex-wrap: wrap;
  }
  
  .content-container .box-service img {
    width: 44px;
  }
  
  .content-container .ttl-service {
    word-break: auto-phrase;
  }
  
  .content-container .ttl-header {
    font-size: 32px;
    margin: 0.4em 0 0.9em;
  }
  .content-container .wrap-review {
    gap:20px;
  }

}