:root{
  --bg:#f7f5f0;
  --surface:#ffffff;
  --ink:#161616;
  --muted:#6f6a61;
  --line:#ddd8ce;
  --gold:#b77a00;
  --gold-dark:#8c5c00;
  --gold-soft:#f4ead4;
  --green:#147a48;
  --red:#b42318;
  --shadow:0 18px 55px rgba(30,24,14,.09);
  --radius:24px;
  --max:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic UI","Yu Gothic",Meiryo,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit}button,input,select,textarea{font:inherit}button{cursor:pointer}.hidden{display:none!important}
.shell{width:min(var(--max),calc(100% - 32px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(247,245,240,.92);backdrop-filter:blur(16px);border-bottom:1px solid rgba(0,0,0,.07)}
.site-header__inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:11px;text-decoration:none}.brand__mark{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:#111;color:#d59a16;font-weight:900;font-size:13px}.brand__text strong{display:block;font-size:14px;letter-spacing:.03em}.brand__text small{display:block;color:var(--muted);margin-top:1px}.header-actions{display:flex;gap:8px;align-items:center}
.btn{border:0;border-radius:999px;min-height:46px;padding:0 20px;display:inline-flex;align-items:center;justify-content:center;text-decoration:none;font-weight:850;letter-spacing:-.01em;background:#111;color:#fff;transition:.16s ease}.btn:hover{transform:translateY(-1px)}.btn--gold{background:var(--gold)}.btn--gold:hover{background:var(--gold-dark)}.btn--ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line)}.btn--full{width:100%;border-radius:14px}.btn--small{min-height:40px;padding-inline:16px;font-size:13px}
.demo-notice{display:none;background:#7e5700;color:#fff;text-align:center;padding:7px 14px;font-size:12px;font-weight:800}.demo-notice.is-visible{display:block}
.page-hero{padding:68px 0 46px}.kicker{margin:0 0 10px;color:var(--gold);font-size:12px;font-weight:900;letter-spacing:.16em}.page-title{margin:0;font-size:clamp(42px,7vw,78px);line-height:.98;letter-spacing:-.055em}.page-lead{max-width:720px;margin:20px 0 0;color:var(--muted);line-height:1.85;font-size:17px}
.section{padding:42px 0 78px}.section--tight{padding-top:20px}.section--surface{background:rgba(255,255,255,.5);border-top:1px solid rgba(0,0,0,.05);border-bottom:1px solid rgba(0,0,0,.05)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:22px}.section-head h2{margin:0;font-size:clamp(30px,4.6vw,50px);letter-spacing:-.045em;line-height:1.05}.section-head p{margin:10px 0 0;color:var(--muted);line-height:1.7}
.flyer-frame{position:relative;background:#fff;border:1px solid var(--line);border-radius:22px;padding:10px;box-shadow:var(--shadow);overflow:hidden}.flyer-frame img{width:100%;height:auto;display:block;border-radius:14px;background:#fff}.flyer-frame img.is-loading{min-height:420px;background:linear-gradient(110deg,#eee 20%,#f8f8f8 40%,#eee 60%);background-size:200% 100%;animation:shimmer 1.2s linear infinite}.flyer-frame.has-error::after{content:"フライヤーを読み込めませんでした";position:absolute;inset:0;display:grid;place-items:center;background:#fff;color:var(--red);font-weight:800;padding:24px;text-align:center}@keyframes shimmer{to{background-position:-200% 0}}
.list-grid{display:grid;gap:22px}.workshop-list-card{display:grid;grid-template-columns:290px 1fr;gap:0;background:var(--surface);border:1px solid var(--line);border-radius:28px;overflow:hidden;box-shadow:var(--shadow)}.workshop-list-card__media{padding:18px;background:#eee8db}.workshop-list-card__media .flyer-frame{box-shadow:none;border-radius:18px;padding:7px}.workshop-list-card__body{padding:30px;display:flex;flex-direction:column;justify-content:center}.status-pill{display:inline-flex;align-items:center;width:max-content;border-radius:999px;padding:6px 10px;background:#e8f6ee;color:var(--green);font-size:12px;font-weight:900}.workshop-list-card h2{margin:14px 0 8px;font-size:clamp(27px,4vw,42px);line-height:1.05;letter-spacing:-.045em}.event-date{font-weight:900}.event-meta{margin-top:10px;display:grid;gap:5px;color:var(--muted);line-height:1.6}.event-summary{margin:18px 0 22px;color:var(--muted);line-height:1.8}.price-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}.price-chip{padding:8px 11px;border-radius:12px;background:var(--gold-soft);font-size:13px;font-weight:850;color:#5a3b00}
.detail-hero{padding:48px 0 54px}.detail-grid{display:grid;grid-template-columns:minmax(340px,500px) 1fr;gap:54px;align-items:center}.detail-copy h1{margin:8px 0 18px;font-size:clamp(46px,6.4vw,76px);line-height:1.02;letter-spacing:-.055em}.detail-lead{margin:0 0 20px;font-size:20px;font-weight:850;line-height:1.55}.fact-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:20px 0}.fact{padding:15px 16px;background:var(--surface);border:1px solid var(--line);border-radius:16px}.fact small{display:block;color:var(--gold);font-size:10px;font-weight:900;letter-spacing:.14em;margin-bottom:5px}.fact strong{display:block;font-size:16px}.fact span{display:block;color:var(--muted);font-size:12px;line-height:1.55;margin-top:4px}.detail-description{color:var(--muted);line-height:1.85;margin:20px 0}.hero-actions{display:flex;gap:10px;flex-wrap:wrap}.poster-button{appearance:none;border:0;background:transparent;padding:0;width:100%;text-align:inherit;cursor:zoom-in}.poster-button .flyer-frame::after{content:"タップして拡大";position:absolute;left:50%;bottom:20px;transform:translateX(-50%);padding:8px 12px;border-radius:999px;background:rgba(17,17,17,.82);color:#fff;font-size:11px;font-weight:850;white-space:nowrap;backdrop-filter:blur(10px)}
.flow-strip{display:grid;grid-template-columns:repeat(3,1fr);background:var(--surface);border:1px solid var(--line);border-radius:20px;overflow:hidden}.flow-step{padding:17px 20px;display:flex;align-items:center;gap:12px}.flow-step+.flow-step{border-left:1px solid var(--line)}.flow-no{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--gold-soft);color:var(--gold-dark);font-size:12px;font-weight:900;flex:0 0 auto}.flow-step strong{font-size:14px}.flow-step small{display:block;color:var(--muted);margin-top:3px}
.class-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.class-card{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 10px 32px rgba(30,24,14,.06);display:flex;flex-direction:column;min-height:330px}.class-card.is-featured{border:2px solid #c08a16;background:linear-gradient(180deg,#fff,#fffaf0)}.class-top{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.class-no{font-size:11px;font-weight:900;letter-spacing:.14em;color:var(--gold)}.class-card h3{margin:6px 0 4px;font-size:24px}.class-time{color:var(--muted);font-size:14px}.class-price{font-size:28px;font-weight:950;white-space:nowrap}.class-info{display:grid;gap:9px;margin:18px 0}.class-info div{padding:11px 12px;background:#faf8f4;border-radius:13px}.class-info small{display:block;color:var(--muted);font-size:11px;margin-bottom:3px}.class-info strong{font-size:13px}.seat{color:var(--green)}.class-card .btn{margin-top:auto}
.booking-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,440px);gap:30px;align-items:start}.booking-intro h2{margin:0;font-size:clamp(34px,5vw,54px);letter-spacing:-.045em}.booking-intro p{color:var(--muted);line-height:1.8}.selection-summary{margin-top:22px;padding:18px;background:var(--gold-soft);border:1px solid #e6d2a8;border-radius:18px}.selection-summary small{display:block;color:#76510a;font-weight:850;margin-bottom:5px}.selection-summary strong{font-size:24px}.booking-panel{background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow);position:sticky;top:92px}label{display:block;margin-bottom:14px;font-size:13px;font-weight:850}input,select,textarea{width:100%;margin-top:7px;border:1px solid var(--line);background:#fff;border-radius:13px;padding:13px 14px;outline:none;color:var(--ink)}input:focus,select:focus,textarea:focus{border-color:var(--gold);box-shadow:0 0 0 3px rgba(183,122,0,.12)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.checkline{display:flex;gap:9px;align-items:flex-start;font-weight:650;line-height:1.55}.checkline input{width:auto;margin-top:3px}.booking-total{padding:14px 15px;border-radius:15px;background:#f7f4ec;display:grid;gap:8px;margin-top:10px}.booking-total div{display:flex;justify-content:space-between;gap:12px}.help{font-size:12px;color:var(--muted);line-height:1.6}
.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.info-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:21px}.info-card h3{margin:0 0 10px;font-size:24px}.info-card p,.info-card li{color:var(--muted);line-height:1.8}.info-card ul{margin:0;padding-left:20px}
.site-footer{padding:32px 0 100px;background:#111;color:#fff;text-align:center;font-size:13px}.site-footer a{color:#fff}.sticky-cta{position:fixed;z-index:45;left:0;right:0;bottom:0;background:rgba(17,17,17,.93);backdrop-filter:blur(14px);padding:10px 16px calc(10px + env(safe-area-inset-bottom));display:none}.sticky-cta__inner{max-width:var(--max);margin:auto;display:flex;align-items:center;justify-content:space-between;gap:15px;color:#fff}.sticky-cta strong{display:block;font-size:13px}.sticky-cta small{color:#ccc}.toast{position:fixed;z-index:100;left:50%;bottom:90px;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:#111;color:#fff;padding:11px 16px;border-radius:999px;transition:.2s}.toast.show{opacity:1;transform:translate(-50%,0)}
dialog{border:0}.poster-modal{width:min(94vw,820px);max-height:94vh;padding:14px;background:#f3f0e8;border-radius:22px;box-shadow:0 30px 120px rgba(0,0,0,.45)}.poster-modal::backdrop{background:rgba(0,0,0,.82)}.poster-modal__bar{display:flex;justify-content:flex-end;margin-bottom:10px}.poster-modal__body img{width:100%;height:auto;display:block;background:#fff;border-radius:12px}.modal{width:min(92vw,580px);padding:0;border-radius:22px}.modal::backdrop{background:rgba(0,0,0,.55)}.modal__inner{padding:24px}
.admin-shell{padding:34px 0 90px}.login-card{max-width:440px;margin:45px auto;background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:var(--shadow)}.admin-layout{display:grid;grid-template-columns:220px 1fr;gap:24px}.admin-nav{position:sticky;top:92px;height:max-content;background:#fff;border:1px solid var(--line);border-radius:20px;padding:10px}.admin-nav .btn{width:100%;justify-content:flex-start;margin:4px 0}.admin-main h1{font-size:clamp(34px,5vw,58px);letter-spacing:-.045em;margin:0}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:20px 0}.stat{background:#fff;border:1px solid var(--line);border-radius:18px;padding:17px}.stat span{display:block;color:var(--muted);font-size:11px}.stat strong{display:block;font-size:24px;margin-top:4px}.event-card{background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden}.event-cover{aspect-ratio:16/9;background:#eee8db;display:grid;place-items:center;overflow:hidden}.event-cover img{width:100%;height:100%;object-fit:contain;background:#eee8db}.event-body{padding:18px}.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.badge{display:inline-flex;border-radius:999px;padding:5px 9px;background:#f0ede6;font-size:11px;font-weight:850}.badge.live{background:#e8f6ee;color:var(--green)}.panel{background:#fff;border:1px solid var(--line);border-radius:22px;padding:20px}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.toolbar{display:flex;gap:7px;flex-wrap:wrap;margin-top:14px}.smallbtn{border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 10px;font-weight:800}.smallbtn.danger{color:var(--red)}.sessions{display:grid;gap:12px}.session-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}.divider{height:1px;background:var(--line);margin:20px 0}.poster-preview{max-width:260px;max-height:360px;object-fit:contain;background:#eee8db;border-radius:14px;margin-top:10px}.tablewrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:16px}table{border-collapse:collapse;width:100%;min-width:760px}th,td{padding:11px;border-bottom:1px solid var(--line);text-align:left;font-size:13px}th{background:#f8f6f1}.empty{padding:30px;text-align:center;border:1px dashed var(--line);border-radius:18px;color:var(--muted)}
@media(max-width:900px){.workshop-list-card{grid-template-columns:230px 1fr}.detail-grid{grid-template-columns:minmax(280px,560px);justify-content:center;gap:28px}.detail-copy{max-width:680px;margin-inline:auto}.class-grid{grid-template-columns:1fr}.booking-layout{grid-template-columns:1fr}.booking-panel{position:static}.admin-layout{grid-template-columns:1fr}.admin-nav{position:static;display:grid;grid-template-columns:repeat(4,1fr);gap:6px}.admin-nav .btn{justify-content:center}.cards{grid-template-columns:1fr}.stats{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.shell{width:min(100% - 24px,var(--max))}.site-header__inner{height:64px}.brand__text small{display:none}.page-hero{padding:44px 0 28px}.page-title{font-size:45px}.workshop-list-card{grid-template-columns:1fr}.workshop-list-card__media{padding:14px}.workshop-list-card__media .flyer-frame{max-width:340px;margin:auto}.workshop-list-card__body{padding:22px}.detail-hero{padding:24px 0 36px}.detail-grid{gap:22px}.detail-grid>.poster-button{max-width:420px;margin:auto}.detail-copy h1{font-size:43px}.detail-lead{font-size:17px}.fact-grid{grid-template-columns:1fr}.hero-actions{display:grid}.hero-actions .btn{width:100%}.flow-strip{grid-template-columns:1fr}.flow-step+.flow-step{border-left:0;border-top:1px solid var(--line)}.section{padding:32px 0 58px}.section-head{align-items:flex-start}.class-card{min-height:0}.form-grid,.info-grid,.grid2,.grid3{grid-template-columns:1fr}.sticky-cta{display:block}.site-footer{padding-bottom:130px}.admin-nav{grid-template-columns:1fr 1fr}.stats{grid-template-columns:1fr 1fr}.header-actions .admin-link{display:none}}