/*
Theme Name: Matsui Piano School
Theme URI: https://matsui-piano-osaka.com
Author: 小林電気株式会社
Description: 松井ピアノ教室 公式サイト用カスタムテーマ。モバイルファースト、900px以上でPCレイアウトに切り替わる。
Version: 1.0.0
Requires PHP: 7.4
Text Domain: matsui-piano
*/

:root{
  --ivory:#FAF6ED;
  --soft:#F1EADA;
  --ebony:#221D17;
  --felt:#8E3B2F;
  --felt-deep:#6F2C23;
  --brass:#A8863C;
  --line:#06C755;
  --ink:#3A342C;
  --paper:#FFFFFF;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto;} *{transition:none!important;animation:none!important;}}
body{
  font-family:"Hiragino Kaku Gothic ProN","Yu Gothic","Noto Sans JP",sans-serif;
  color:var(--ink);
  background:var(--ivory);
  line-height:1.9;
  font-size:15.5px;
  padding-bottom:64px;
}
.mincho{font-family:"Hiragino Mincho ProN","Yu Mincho","Noto Serif JP",serif;}

.proof{
  background:var(--ebony);color:var(--ivory);
  text-align:center;font-size:11px;letter-spacing:.15em;padding:5px 8px;
}

header{
  position:sticky;top:0;z-index:50;
  background:rgba(250,246,237,.96);backdrop-filter:blur(6px);
  border-bottom:1px solid #E4DCC9;
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 16px;
}
.brand{display:flex;flex-direction:column;line-height:1.3;}
.brand b{font-size:17px;letter-spacing:.08em;color:var(--ebony);}
.brand span{font-size:10px;color:#8A8171;letter-spacing:.12em;}
.head-cta{
  background:var(--felt);color:#fff;text-decoration:none;
  font-size:12.5px;font-weight:700;padding:9px 14px;border-radius:3px;
  letter-spacing:.06em;
}
.head-cta:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid var(--brass);outline-offset:2px;}

.keys{display:flex;height:26px;overflow:hidden;}
.keys i{flex:1;background:var(--paper);border-right:1px solid #DDD5C2;position:relative;}
.keys i.b::after{
  content:"";position:absolute;top:0;right:-7px;width:14px;height:16px;
  background:var(--ebony);z-index:2;border-radius:0 0 2px 2px;
}

.hero{padding:44px 22px 36px;position:relative;overflow:hidden;}
.hero .eyebrow{
  display:inline-block;color:var(--felt);font-size:12px;font-weight:700;
  letter-spacing:.25em;border-left:3px solid var(--felt);padding-left:10px;margin-bottom:16px;
}
.hero h1{
  font-size:clamp(27px,7.5vw,40px);line-height:1.55;color:var(--ebony);
  letter-spacing:.06em;font-weight:600;margin-bottom:18px;
}
.hero h1 .accent{color:var(--felt);}
.hero p.lead{font-size:14.5px;color:#5C544A;margin-bottom:24px;}
.hero p.lead b{color:var(--ebony);}
.badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px;}
.badges span{
  background:var(--paper);border:1px solid #E0D8C5;color:#6B6355;
  font-size:11.5px;padding:5px 11px;border-radius:999px;letter-spacing:.04em;
}
.cta-main{
  display:block;text-align:center;background:var(--felt);color:#fff;
  text-decoration:none;font-weight:700;font-size:16.5px;letter-spacing:.08em;
  padding:17px;border-radius:4px;box-shadow:0 4px 0 var(--felt-deep);
  margin-bottom:10px;
}
.cta-sub{display:block;text-align:center;font-size:12px;color:#8A8171;letter-spacing:.06em;}
.photo-ph{
  margin-top:28px;height:210px;border-radius:6px;
  background:linear-gradient(160deg, #E9E1CE 0%, #DACFB4 100%);
  border:1.5px dashed var(--brass);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  color:#8A7A50;font-size:13px;letter-spacing:.08em;gap:6px;text-align:center;padding:0 14px;
}
.photo-ph .icon{font-size:30px;}
.real-photo{width:100%;height:210px;object-fit:cover;border-radius:6px;display:block;margin-top:28px;}

section{padding:44px 22px;}
.sec-label{
  text-align:center;color:var(--brass);font-size:11px;letter-spacing:.35em;
  margin-bottom:8px;font-weight:700;
}
h2{
  text-align:center;font-size:22px;color:var(--ebony);letter-spacing:.1em;
  font-weight:600;margin-bottom:28px;line-height:1.6;
}
h2 .accent{color:var(--felt);}
.alt{background:var(--paper);}

.worry{max-width:560px;margin:0 auto;}
.worry li{
  list-style:none;background:var(--paper);border:1px solid #E7DFCC;
  border-radius:6px;padding:15px 16px 15px 44px;margin-bottom:12px;
  position:relative;font-size:14.5px;
}
.worry li::before{
  content:"♪";position:absolute;left:15px;top:13px;color:var(--felt);
  font-size:17px;font-weight:700;
}
.worry-close{
  text-align:center;margin-top:22px;font-size:15.5px;color:var(--ebony);
  letter-spacing:.06em;line-height:2;
}
.worry-close b{color:var(--felt);border-bottom:2px solid var(--brass);padding-bottom:2px;}

.reason{max-width:560px;margin:0 auto 18px;background:var(--ivory);
  border-radius:6px;padding:22px 20px;border-top:3px solid var(--felt);}
.alt .reason{background:var(--soft);}
.reason .num{
  color:var(--brass);font-size:12px;letter-spacing:.3em;font-weight:700;margin-bottom:6px;
}
.reason h3{font-size:17.5px;color:var(--ebony);letter-spacing:.06em;margin-bottom:10px;line-height:1.6;}
.reason p{font-size:14px;color:#5C544A;}
.reason p b{color:var(--felt);}

.course{max-width:560px;margin:0 auto 20px;background:var(--paper);
  border:1px solid #E7DFCC;border-radius:8px;overflow:hidden;}
.course .head{
  background:var(--ebony);color:var(--ivory);padding:13px 18px;
  display:flex;justify-content:space-between;align-items:center;
}
.course .head h3{font-size:16.5px;letter-spacing:.1em;font-weight:600;}
.course .head .tag{font-size:10.5px;background:var(--felt);padding:3px 9px;border-radius:999px;letter-spacing:.08em;}
.course .body{padding:18px;}
.course .body p{font-size:14px;color:#5C544A;margin-bottom:12px;}
.course .price{
  font-family:"Hiragino Mincho ProN","Yu Mincho",serif;
  color:var(--ebony);font-size:14px;border-top:1px dashed #D8CFBA;padding-top:12px;
}
.course .price b{font-size:21px;color:var(--felt);letter-spacing:.02em;}
.note{max-width:560px;margin:4px auto 0;font-size:11.5px;color:#9A9080;text-align:center;}

.voice{max-width:560px;margin:0 auto 16px;background:var(--paper);
  border-radius:6px;padding:20px;position:relative;border:1px solid #E7DFCC;}
.voice::before{
  content:"\201C";position:absolute;top:6px;left:14px;font-size:44px;color:var(--brass);
  font-family:Georgia,serif;opacity:.5;line-height:1;
}
.voice p{font-size:14px;color:#4A4339;padding-left:8px;}
.voice .who{margin-top:10px;font-size:12px;color:var(--felt);font-weight:700;letter-spacing:.06em;text-align:right;}

.teacher{max-width:560px;margin:0 auto;text-align:center;}
.teacher .photo-ph{height:190px;margin:0 auto 22px;max-width:340px;}
.teacher .real-photo{height:190px;margin:0 auto 22px;max-width:340px;}
.teacher h3{font-size:19px;color:var(--ebony);letter-spacing:.14em;margin-bottom:4px;}
.teacher .role{font-size:12px;color:var(--brass);letter-spacing:.2em;margin-bottom:16px;}
.teacher p{font-size:14px;color:#5C544A;text-align:left;margin-bottom:12px;}

.flow{max-width:560px;margin:0 auto;}
.step{display:flex;gap:14px;margin-bottom:6px;}
.step .n{
  flex-shrink:0;width:38px;height:38px;border-radius:50%;
  background:var(--felt);color:#fff;display:flex;align-items:center;justify-content:center;
  font-family:"Hiragino Mincho ProN","Yu Mincho",serif;font-size:16px;
}
.step .txt h4{font-size:15px;color:var(--ebony);letter-spacing:.06em;margin-bottom:3px;}
.step .txt p{font-size:13px;color:#6B6355;}
.step-line{width:2px;height:22px;background:#D8CFBA;margin:0 0 6px 18px;}

.access{max-width:560px;margin:0 auto;}
.map-ph{
  height:170px;border-radius:6px;background:linear-gradient(160deg,#E4EAE0,#D2DCCB);
  border:1.5px dashed #7E9470;display:flex;align-items:center;justify-content:center;
  color:#617355;font-size:13px;letter-spacing:.08em;margin-bottom:18px;text-align:center;padding:0 14px;
}
.map-embed{border-radius:6px;overflow:hidden;margin-bottom:18px;border:1px solid #E7DFCC;}
.map-embed iframe{width:100%;height:220px;border:0;display:block;}
.access dl{background:var(--paper);border:1px solid #E7DFCC;border-radius:6px;padding:18px;}
.access dt{font-size:12px;color:var(--brass);letter-spacing:.15em;font-weight:700;margin-top:12px;}
.access dt:first-child{margin-top:0;}
.access dd{font-size:14px;color:#4A4339;margin-top:2px;}

.faq{max-width:560px;margin:0 auto;}
.faq details{background:var(--paper);border:1px solid #E7DFCC;border-radius:6px;margin-bottom:10px;overflow:hidden;}
.faq summary{
  padding:15px 16px;font-size:14.5px;font-weight:700;color:var(--ebony);
  cursor:pointer;list-style:none;position:relative;padding-right:38px;letter-spacing:.02em;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::before{content:"Q";color:var(--felt);margin-right:10px;font-family:Georgia,serif;}
.faq summary::after{content:"＋";position:absolute;right:15px;top:14px;color:var(--brass);}
.faq details[open] summary::after{content:"−";}
.faq .a{padding:0 16px 15px 16px;font-size:13.5px;color:#5C544A;}
.faq .a::before{content:"A\3000";color:var(--brass);font-family:Georgia,serif;font-weight:700;}

.last-cta{background:var(--ebony);text-align:center;padding:48px 22px;}
.last-cta h2{color:var(--ivory);margin-bottom:6px;}
.last-cta p{color:#B5AC9A;font-size:13px;margin-bottom:24px;letter-spacing:.06em;}
.last-cta .cta-main{max-width:400px;margin:0 auto 12px;}
.cta-line{
  display:block;max-width:400px;margin:0 auto;text-align:center;
  background:var(--line);color:#fff;text-decoration:none;font-weight:700;
  font-size:15px;padding:15px;border-radius:4px;letter-spacing:.06em;
}
footer.site-footer{background:#171310;color:#8A8171;text-align:center;font-size:11px;padding:20px;letter-spacing:.08em;}

.fixbar{
  position:fixed;bottom:0;left:0;right:0;z-index:60;display:flex;
  box-shadow:0 -3px 12px rgba(0,0,0,.15);
}
.fixbar a{
  flex:1;text-align:center;padding:15px 8px;font-size:14px;font-weight:700;
  text-decoration:none;letter-spacing:.06em;
}
.fixbar .f-line{background:var(--line);color:#fff;}
.fixbar .f-trial{background:var(--felt);color:#fff;}

@media (min-width:900px){
  body{font-size:16px;}
  header{padding:16px 48px;}
  .brand b{font-size:19px;}
  .brand span{font-size:11px;}
  .head-cta{padding:11px 22px;font-size:13px;}
  .hero{
    max-width:1120px;margin:0 auto;padding:72px 48px 64px;
    display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  }
  .hero h1{font-size:46px;}
  .hero p.lead{font-size:15.5px;}
  .hero .photo-ph,.hero .real-photo{margin-top:0;height:400px;}
  section{padding:72px 48px;}
  h2{font-size:28px;}
  .worry{max-width:900px;display:grid;grid-template-columns:1fr 1fr;gap:14px 18px;}
  .worry li{margin-bottom:0;}
  .worry-close{max-width:900px;margin-left:auto;margin-right:auto;}
  .reasons-grid{max-width:1080px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
  .reasons-grid .reason{max-width:none;margin:0;}
  .courses-grid{max-width:1080px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
  .courses-grid .course{max-width:none;margin:0;}
  .note{max-width:1080px;}
  .voices-grid{max-width:1080px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .voices-grid .voice{max-width:none;margin:0;}
  .teacher{max-width:920px;display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:center;text-align:left;}
  .teacher .photo-ph,.teacher .real-photo{margin:0;max-width:none;height:280px;}
  .flow{max-width:1080px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
  .flow .step-line{display:none;}
  .flow .step{flex-direction:column;text-align:center;align-items:center;gap:10px;margin-bottom:0;}
  .access{max-width:1000px;display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:stretch;}
  .map-ph,.map-embed{margin-bottom:0;height:100%;min-height:220px;}
  .map-embed iframe{height:100%;min-height:220px;}
  .faq{max-width:1000px;display:grid;grid-template-columns:1fr 1fr;gap:14px 20px;align-items:start;}
  .faq details{margin-bottom:0;}
  .last-cta .cta-main,.cta-line{max-width:420px;}
}
@media (min-width:1280px){
  .hero{max-width:1240px;}
}

/* ---- LINE QRコードブロック ---- */

/* ---- LINE QRコードブロック（PC・スマホ両方表示・確実に中央） ---- */
.line-qr-wrap{width:100%;display:flex;justify-content:center;margin-top:2.5rem;}
.line-qr-block{
  text-align:center;
  padding:1.5rem 1rem;
  background:#fff;
  border-radius:12px;
  width:260px;
  box-shadow:0 2px 8px rgba(0,0,0,.06);
}
.line-qr-desc{font-size:.85rem;color:#6b5c4a;margin-bottom:1rem;line-height:1.5;}
.line-qr-link{display:block;margin:0 auto .75rem;}
.line-qr-img{
  width:160px;
  height:160px;
  border-radius:8px;
  display:block;
  margin:0 auto;
}
.line-qr-cta{font-size:.8rem;color:#9a9080;}
@media (min-width:768px){
  .line-qr-img{width:200px;height:200px;}
  .line-qr-block{width:300px;}
}

/* ---- フォーム ---- */
.mp-form-wrap{margin-top:2.5rem;}
.form-sent{
  background:#f0f8f0;border:2px solid #06c755;border-radius:8px;
  padding:1.5rem;text-align:center;color:#1a4a1a;font-size:15px;line-height:1.8;
}
.form-sent p{margin-bottom:.4rem;}
.form-error-box{
  background:#fff0f0;border:1px solid #d9534f;border-radius:6px;
  padding:.75rem 1rem;margin-bottom:1rem;
}
.form-error-box ul{list-style:none;padding:0;margin:0;}
.form-error-box li{font-size:.9rem;color:#c0392b;padding:.15rem 0;}
.mp-form{background:#fff;border-radius:8px;padding:1.25rem 1rem;box-shadow:0 2px 8px rgba(0,0,0,.06);}
.form-row{margin-bottom:1.1rem;}
.form-label{display:block;font-size:.875rem;color:#3a342c;font-weight:700;margin-bottom:.35rem;}
.req{background:#8e3b2f;color:#fff;font-size:.68rem;padding:1px 6px;border-radius:3px;margin-left:.4rem;font-weight:normal;vertical-align:middle;}
.opt{background:#9a9080;color:#fff;font-size:.68rem;padding:1px 6px;border-radius:3px;margin-left:.4rem;font-weight:normal;vertical-align:middle;}
.form-input,.form-textarea{
  width:100%;padding:.65rem .8rem;border:1px solid #d8cfba;border-radius:5px;
  font-size:15px;color:#3a342c;background:#faf6ed;
  font-family:inherit;box-sizing:border-box;
}
.form-input:focus,.form-textarea:focus{
  outline:none;border-color:#a8863c;background:#fff;
  box-shadow:0 0 0 3px rgba(168,134,60,.15);
}
.form-textarea{resize:vertical;min-height:90px;}
.btn-submit{
  width:100%;padding:.9rem;background:#8e3b2f;color:#fff;border:none;
  border-radius:5px;font-size:16px;font-weight:700;letter-spacing:.08em;
  cursor:pointer;margin-top:.25rem;transition:background .2s;
}
.btn-submit:hover{background:#6f2c23;}
.form-note{font-size:.8rem;color:#9a9080;text-align:center;margin-top:.6rem;line-height:1.5;}

/* ---- Googleマップ ---- */
.map-embed{height:240px;overflow:hidden;border-radius:6px;flex-shrink:0;}
.map-embed iframe{width:100%;height:100%;border:0;display:block;}
.map-notice{font-size:.8rem;color:#9a9080;text-align:center;margin-top:.4rem;line-height:1.5;}
@media (min-width:1024px){
  .map-embed{height:100%;min-height:280px;}
  .mp-form-wrap{max-width:560px;margin:2.5rem auto 0;}
}