:root{
  --ink:#1f1b18;
  --ink-soft:#4a443d;
  --paper:#f7f4ef;
  --paper-2:#eee8df;
  --line:#d3c8ba;
  --accent:#8c2f24;
  --accent-deep:#6d2119;
  --gold:#9e782f;
  --white:#fffdfa;
  --shadow:0 2px 14px rgba(31,27,24,.08);
  --radius:6px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans JP","Hiragino Sans","Yu Gothic",sans-serif;
  color:var(--ink);
  background:var(--white);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.hero-title,.sec-title,.feature-title,.brand-name{
  font-family:"Noto Serif JP","Noto Sans JP",serif;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--accent);text-decoration:none}
.wrap{width:min(1080px,92vw);margin-inline:auto}
.wrap-narrow{width:min(760px,92vw)}
.sp{display:none}

/* ---------- ボタン ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.4em;
  font-family:inherit;font-size:15px;font-weight:600;
  padding:.75em 1.4em;border-radius:999px;border:1px solid transparent;
  cursor:pointer;transition:.2s;text-align:center;line-height:1.4;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-tel{background:var(--white);color:var(--ink);border-color:var(--line)}
.btn-card{background:var(--white);color:var(--accent);border:1.5px solid var(--accent);width:100%}
.btn-card:hover{background:var(--accent);color:#fff}
.btn-lg{font-size:17px;padding:1em 1.9em}
.btn-sm{font-size:14px;padding:.55em 1.1em}
.btn-block{width:100%}

/* ---------- ヘッダー ---------- */
.site-head{
  position:sticky;top:0;z-index:20;
  background:rgba(255,253,250,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(6px);
}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.7rem 0}
.brand{display:flex;align-items:center;gap:.7rem;color:var(--ink)}
.brand img{height:36px;width:auto;object-fit:contain;border:none}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.08em;display:none}
.brand-sub{font-size:12px;color:var(--ink-soft);letter-spacing:.12em}
.head-actions{display:flex;gap:.6rem;align-items:center}
.head-actions .btn{padding:.6em 1.1em;font-size:14px}

/* ---------- ヒーロー ---------- */
.hero{position:relative;background:var(--paper)}
.hero-photo{max-height:58vh;overflow:hidden}
.hero-photo img{width:100%;height:58vh;object-fit:cover;object-position:center 45%}
.hero-body{padding:2.6rem 0 3.4rem;text-align:center}
.hero-kicker{margin:0 0 1rem;font-size:13px;letter-spacing:.18em;color:var(--accent);font-weight:600}
.hero-title{margin:0 0 1.2rem;font-size:clamp(28px,5vw,44px);font-weight:700;letter-spacing:.04em;line-height:1.4}
.hero-lead{margin:0 auto;max-width:44em;font-size:16px;color:var(--ink-soft)}
.hero-cta{display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap;margin-top:2rem}

/* ---------- セクション ---------- */
.section{padding:5rem 0}
.section-tint{background:var(--paper)}
.section-form{background:var(--paper-2)}
.sec-kicker{margin:0 0 .6rem;font-size:13px;letter-spacing:.18em;color:var(--accent);font-weight:600}
.sec-title{margin:0 0 1.1rem;font-size:clamp(23px,3.4vw,32px);font-weight:700;line-height:1.5;letter-spacing:.03em}
.sec-lead{margin:0 0 2.6rem;font-size:15.5px;color:var(--ink-soft);max-width:46em}
.sub-title{margin:3.2rem 0 1.4rem;font-size:20px;font-weight:700;padding-bottom:.6rem;border-bottom:1px solid var(--line)}

/* ---------- 入口4つ ---------- */
.gate-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem}
.gate-card{
  position:relative;display:flex;flex-direction:column;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;color:var(--ink);box-shadow:var(--shadow);transition:.25s;
}
.gate-card:hover{transform:translateY(-3px);border-color:var(--accent)}
.gate-no{
  position:absolute;top:.7rem;left:.7rem;z-index:2;
  width:30px;height:30px;border-radius:50%;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
}
.gate-img{height:130px;width:100%;object-fit:cover}
.gate-body{padding:1.1rem 1.1rem 1.4rem;display:flex;flex-direction:column;flex:1}
.gate-name{display:block;font-size:16px;font-weight:700;line-height:1.5;margin-bottom:.5rem}
.gate-desc{display:block;font-size:13.5px;color:var(--ink-soft);flex:1;margin-bottom:.9rem}
.gate-link{display:block;font-size:14px;font-weight:700;color:var(--accent)}

/* ---------- 3歩 ---------- */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.steps li{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem}
.step-no{
  display:flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;background:var(--ink);color:#fff;
  font-weight:700;font-size:15px;margin-bottom:.9rem;
}
.step-text{display:block;font-size:14.5px;color:var(--ink-soft)}
.step-text strong{display:block;color:var(--ink);font-size:16px;margin-bottom:.4rem}

/* ---------- おすすめ横並び ---------- */
.feature{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:2rem;align-items:center;
  background:var(--ink);color:var(--white);border-radius:var(--radius);overflow:hidden;margin-bottom:3rem}
.feature-photo{position:relative;height:100%;min-height:300px}
.feature-photo img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.feature-badge{
  position:absolute;top:1rem;left:1rem;background:var(--accent);color:#fff;
  font-size:13px;font-weight:700;padding:.4em 1em;border-radius:999px;letter-spacing:.05em;
}
.feature-body{padding:2.2rem 2.2rem 2.2rem 0}
.feature-title{margin:0 0 .8rem;font-size:24px;font-weight:700}
.feature-price{margin:0 0 1.2rem;display:flex;align-items:baseline;gap:.2em}
.feature-price .en{font-size:38px;font-weight:700;letter-spacing:.02em}
.feature-price .yen{font-size:18px}
.feature-price .per{font-size:13px;opacity:.8;margin-left:.5em}
.feature-list{margin:0 0 1.6rem;padding-left:1.2em;font-size:14.5px}
.feature-list li{margin-bottom:.4em}
.feature-cta{display:flex;gap:.8rem;flex-wrap:wrap;align-items:center}
.feature-cta .btn-ghost{color:var(--white);border-color:rgba(255,255,255,.5)}
.feature-cta .btn-ghost:hover{border-color:#fff;color:#fff}

/* ---------- カード ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.item-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow)}
.item-img{height:170px;width:100%;object-fit:cover}
.item-body{padding:1.2rem 1.2rem 1.4rem;display:flex;flex-direction:column;flex:1}
.item-tag{align-self:flex-start;font-size:12px;font-weight:700;letter-spacing:.06em;
  padding:.3em .9em;border-radius:999px;margin-bottom:.7rem;background:var(--paper-2);color:var(--ink-soft)}
.tag-night{background:#3b326b;color:#fff}
.tag-day{background:#2f6b52;color:#fff}
.tag-free{background:var(--gold);color:#fff}
.tag-season{background:var(--accent);color:#fff}
.item-name{margin:0 0 .4rem;font-size:17px;font-weight:700;line-height:1.5}
.item-meta{margin:0 0 .5rem;font-size:13px;color:var(--ink-soft);letter-spacing:.02em}
.item-price{margin:0 0 .7rem;font-size:16px;font-weight:700;color:var(--accent)}
.item-desc{margin:0 0 1.2rem;font-size:13.5px;color:var(--ink-soft);flex:1}

/* ---------- 助言ボックス ---------- */
.tipbox{margin-top:2.6rem;background:var(--paper);border-left:4px solid var(--accent);
  padding:1.6rem 1.8rem;border-radius:0 var(--radius) var(--radius) 0}
.tipbox-title{margin:0 0 .9rem;font-size:16px;font-weight:700}
.tipbox ul{margin:0;padding-left:1.2em;font-size:14.5px;color:var(--ink-soft)}
.tipbox li{margin-bottom:.6rem}
.tipbox strong{color:var(--ink)}

/* ---------- 教室リスト ---------- */
.list{border-top:1px solid var(--line)}
.list-row{display:grid;grid-template-columns:88px 1fr 220px;gap:1.4rem;align-items:center;
  padding:1.5rem .6rem;border-bottom:1px solid var(--line)}
.list-date{display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:.6rem 0}
.d-month{font-size:12px;color:var(--ink-soft);letter-spacing:.08em}
.d-day{font-size:26px;font-weight:700;line-height:1.2}
.d-week{font-size:12px;color:var(--ink-soft)}
.list-name{margin:0 0 .35rem;font-size:17px;font-weight:700;line-height:1.5}
.list-meta{margin:0 0 .45rem;font-size:13px;color:var(--accent);font-weight:600;letter-spacing:.02em}
.list-desc{margin:0;font-size:14px;color:var(--ink-soft)}
.list-side{display:flex;flex-direction:column;gap:.7rem}
.list-price{font-size:13px;color:var(--ink-soft);text-align:center}
.list-note{margin-top:1.6rem;font-size:13.5px;color:var(--ink-soft)}

/* ---------- 2列 ---------- */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem;margin-bottom:2rem}
.col-box{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:1.8rem}
.col-title{margin:0 0 1rem;font-size:18px;font-weight:700}
.plain-list{margin:0 0 1.3rem;padding-left:1.2em;font-size:14.5px;color:var(--ink-soft)}
.plain-list li{margin-bottom:.5rem}
.plain-list strong{color:var(--ink)}
.plain-list-compact{font-size:13.5px;columns:2;column-gap:1.5rem}
.member-box{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:1.8rem}
.member-box p{margin:0 0 1.3rem;font-size:14.5px;color:var(--ink-soft)}
.member-cta{display:flex;gap:.8rem;flex-wrap:wrap}
.member-cta .btn{width:auto}

/* ---------- フォーム ---------- */
.picked{display:flex;align-items:center;gap:.8rem;flex-wrap:wrap;
  background:var(--white);border:1.5px solid var(--accent);border-radius:var(--radius);
  padding:.9rem 1.1rem;margin-bottom:1.6rem}
.picked-label{font-size:12px;font-weight:700;color:#fff;background:var(--accent);
  padding:.3em .9em;border-radius:999px;letter-spacing:.06em}
.picked-value{font-size:16px;font-weight:700}
.picked-clear{margin-left:auto;font-family:inherit;font-size:13px;background:none;border:none;
  color:var(--ink-soft);text-decoration:underline;cursor:pointer;padding:.3em}
.picked-clear:hover{color:var(--accent)}

.rsv{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:2rem}
.field{margin-bottom:1.5rem}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
.label{display:block;font-size:14px;font-weight:700;margin-bottom:.5rem}
.req{font-size:11px;font-weight:700;color:#fff;background:var(--accent);
  border-radius:999px;padding:.2em .7em;margin-left:.4em;vertical-align:middle}
.input{width:100%;font-family:inherit;font-size:16px;color:var(--ink);
  padding:.75em .9em;border:1px solid var(--line);border-radius:4px;background:var(--white);
  line-height:1.6;transition:.2s}
.input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(140,47,36,.14)}
.input.err{border-color:#c0392b;background:#fdf3f2}
textarea.input{resize:vertical;min-height:110px}
select.input{appearance:none;
  background-image:url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%235a5148' stroke-width='2'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 1em center;padding-right:2.4em}
.field-help{margin:.5rem 0 0;font-size:12.5px;color:var(--ink-soft)}
.err-msg{margin:.45rem 0 0;font-size:13px;color:#c0392b;font-weight:600}
optgroup{font-weight:700;color:var(--ink)}
option{font-weight:400;color:var(--ink)}
.submit-area{margin-top:2rem}
.submit-note{margin:1rem 0 0;font-size:13px;color:var(--ink-soft);text-align:center}

/* ---------- 送信完了 ---------- */
.done{background:var(--white);border:1.5px solid var(--accent);border-radius:var(--radius);padding:2rem}
.done-title{margin:0 0 1rem;font-size:21px;font-weight:700;color:var(--accent)}
.done-text{margin:0 0 1.4rem;font-size:14.5px;color:var(--ink-soft)}
.done-list{margin:0 0 1.6rem;padding:0;border-top:1px solid var(--line)}
.done-list div{display:grid;grid-template-columns:9em 1fr;gap:1rem;padding:.75rem 0;border-bottom:1px solid var(--line)}
.done-list dt{font-size:13px;font-weight:700;color:var(--ink-soft)}
.done-list dd{margin:0;font-size:15px;font-weight:600}
.done-actions{display:flex;gap:.8rem;flex-wrap:wrap}
.done-actions .btn{width:auto}

/* ---------- 基本情報 ---------- */
.section-info{background:var(--paper)}
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.info-box{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;
  display:flex;flex-direction:column;align-items:flex-start}
.info-title{margin:0 0 .8rem;font-size:16px;font-weight:700;color:var(--accent)}
.info-box p{margin:0 0 .9rem;font-size:14.5px}
.info-sub{font-size:13px!important;color:var(--ink-soft)}
.info-box .btn{margin-top:auto}
.info-link{margin:2rem 0 0;font-size:14px;color:var(--ink-soft);text-align:center}
.info-link a{font-weight:700;text-decoration:underline}

/* ---------- フッター ---------- */
.site-foot{background:var(--ink);color:rgba(255,253,250,.9);padding:2.4rem 0}
.foot-inner{text-align:center}
.foot-name{margin:0 0 .5rem;font-size:15px;font-weight:700;letter-spacing:.05em}
.foot-sub{margin:0 0 .3rem;font-size:13px;opacity:.8}
.foot-sub a{color:#fff;text-decoration:underline}

/* ---------- スマホ ---------- */
@media (max-width:900px){
  .section{padding:3.4rem 0}
  .sp{display:block}
  .gate-grid{grid-template-columns:1fr 1fr}
  .card-grid{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr}
  .feature{grid-template-columns:1fr}
  .feature-photo{min-height:220px}
  .feature-body{padding:1.6rem}
  .two-col{grid-template-columns:1fr}
  .info-grid{grid-template-columns:1fr}
  .list-row{grid-template-columns:72px 1fr;gap:1rem}
  .list-side{grid-column:1 / -1;flex-direction:row;align-items:center;gap:1rem}
  .list-price{flex:1;text-align:left}
  .list-side .btn-card{width:auto;flex:1;padding:.7em 1.2em}
  .plain-list-compact{columns:1}
  .hero-photo img{height:42vh}
}
@media (max-width:620px){
  body{font-size:15px}
  .head-actions .btn-tel{display:none}
  .brand img{width:38px;height:38px}
  .brand-name{font-size:17px}
  .gate-grid{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .rsv{padding:1.3rem}
  .done{padding:1.3rem}
  .done-list div{grid-template-columns:1fr;gap:.2rem}
  .hero-cta .btn{width:100%}
  .list-side{flex-direction:column;align-items:stretch}
  .list-price{text-align:center}
  .list-side .btn-card{width:100%}
  .feature-price .en{font-size:32px}
}