/* 東京読書会 Reading Lab — 温かみ・クラフト デザインシステム */
:root{
  --ink:#2c2620; --muted:#7c7367; --green:#20503b; --brass:#a06a2c;
  --paper:#fbf8f1; --paper2:#f3ecde; --line:#e7ded0; --card:#fffdf8;
  --sage:#7aa089;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--paper);
  font-family:"Zen Maru Gothic",sans-serif;line-height:1.9;font-size:16px;
  background-image:radial-gradient(rgba(160,106,44,.05) 1px,transparent 1px);
  background-size:22px 22px;}
.serif{font-family:"Shippori Mincho",serif}
.hand{font-family:"Caveat",cursive}
h1,h2,h3,h4{font-family:"Shippori Mincho",serif;font-weight:700;line-height:1.5}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:1060px;margin:0 auto;padding:0 24px}

.eyebrow{font-family:"Caveat",cursive;font-size:22px;color:var(--brass);font-weight:700;letter-spacing:.5px}
.btn{display:inline-block;text-decoration:none;font-weight:700;border-radius:30px;padding:13px 28px;font-size:14px;
  transition:transform .15s ease,box-shadow .2s ease,background .2s ease,color .2s ease;cursor:pointer;border:none}
.btn--solid{background:var(--green);color:#fff;box-shadow:0 6px 16px rgba(32,80,59,.22)}
.btn--solid:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(32,80,59,.3)}
.btn--ghost{border:1.5px solid var(--ink);background:transparent}
.btn--ghost:hover{background:var(--ink);color:#fff}

/* header */
header.site{position:sticky;top:0;z-index:20;background:rgba(251,248,241,.92);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand .mark{width:30px;height:30px;background:var(--green);border-radius:7px;position:relative;flex:none}
.brand .mark::before{content:"";position:absolute;inset:7px 8px;border-left:2px solid #fbf8f1}
.brand b{font-family:"Shippori Mincho",serif;font-size:17px;font-weight:700}
.brand b span{color:var(--green)}
header.site nav{display:flex;align-items:center}
header.site nav a{margin-left:20px;font-size:13px;text-decoration:none;color:var(--ink)}
header.site nav a:hover{color:var(--green)}
header.site nav a.btn{color:#fff;padding:9px 18px}

/* footer */
footer.site{background:#1b1a17;color:#cabfae;text-align:center;font-size:12px;padding:30px}

/* sections */
section{padding:74px 0}
.section--alt{background:var(--paper2)}
.sec-head{margin-bottom:34px;text-align:center}
.sec-head h2{font-size:30px;margin:.15em 0 0;position:relative;display:inline-block}
.sec-head h2 svg{position:absolute;left:0;bottom:-10px;width:100%}

/* hero (photo-free, centered) */
.hero{position:relative;overflow:hidden}
.hero .wrap{padding:78px 24px 22px;max-width:720px;text-align:center}
.hero .eyebrow{margin-bottom:8px;display:block}
.hero h1{font-size:50px;line-height:1.5;margin:.1em 0 .3em}
.hero h1 .u{background:linear-gradient(transparent 66%,rgba(160,106,44,.28) 0)}
.hero .lead{color:var(--muted);font-size:15px;margin:0 0 26px}
.hero .cta{display:flex;gap:12px;align-items:center;flex-wrap:wrap;justify-content:center}
.hero .tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px;justify-content:center}
.hero .tags span{font-size:12px;color:var(--green);background:rgba(32,80,59,.07);
  border:1px solid rgba(32,80,59,.22);border-radius:20px;padding:5px 14px;font-weight:500}
.hero-illust{text-align:center;margin-top:6px}
.hero-illust img{width:100%;max-width:540px;margin:0 auto;display:block;mix-blend-mode:multiply}

/* about cards */
.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.about-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:26px 22px;
  box-shadow:0 8px 22px rgba(44,38,32,.05);transition:transform .25s,box-shadow .25s}
.about-card:hover{transform:translateY(-5px);box-shadow:0 16px 34px rgba(44,38,32,.10)}
.about-card .ic{width:58px;height:58px;border-radius:16px;background:rgba(160,106,44,.08);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.about-card .ic svg{width:36px;height:36px}
.about-card h3{margin:.2em 0 .4em;font-size:18px}
.about-card p{font-size:13.5px;color:var(--muted);margin:0}

/* schedule ticket */
.ticket{position:relative;background:var(--card);border:1px dashed var(--brass);border-radius:14px;
  padding:28px 30px;display:flex;gap:26px;align-items:center;max-width:760px;margin:0 auto;
  box-shadow:0 10px 26px rgba(44,38,32,.06)}
.ticket .date{text-align:center;border-right:1px dashed var(--line);padding-right:26px;flex:none}
.ticket .date .d{font-family:"Shippori Mincho",serif;font-size:38px;font-weight:700;color:var(--green);line-height:1}
.ticket .date .m{font-size:12px;color:var(--muted);letter-spacing:1px}
.ticket h3{margin:0 0 4px;font-size:20px}
.ticket p{margin:0;color:var(--muted);font-size:13.5px}
.ticket .go{margin-left:auto;flex:none}
.ticket .closed{margin-left:auto;color:var(--muted);font-size:13px;flex:none}
.sched-empty{text-align:center;color:var(--muted)}

/* reports — polaroid */
.rep-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px 24px}
.rep{background:#fff;padding:12px 12px 18px;border-radius:4px;box-shadow:0 10px 24px rgba(44,38,32,.12);
  transition:transform .25s;text-decoration:none;color:inherit;display:block}
.rep:nth-child(odd){transform:rotate(-1.2deg)}
.rep:nth-child(even){transform:rotate(1deg)}
.rep:hover{transform:rotate(0) translateY(-4px)}
.rep img{aspect-ratio:4/3;object-fit:cover;border-radius:2px;background:var(--paper2)}
.rep .noimg{aspect-ratio:4/3;border-radius:2px;background:linear-gradient(135deg,#efe7d8,#e3d8c4);
  display:flex;align-items:center;justify-content:center;color:#b6a988;font-family:"Shippori Mincho",serif}
.rep .meta{font-family:"Caveat",cursive;font-size:19px;color:var(--brass);margin:8px 2px 2px}
.rep h4{font-size:15px;margin:0 2px 4px}
.rep p{font-size:12px;color:var(--muted);margin:0 2px}
.center-link{text-align:center;margin-top:30px}
.center-link a{color:var(--green);text-decoration:none;font-weight:700;border-bottom:1px solid var(--green);padding-bottom:1px}

/* apply form */
.form{max-width:540px;margin:0 auto}
.form input,.form textarea{width:100%;padding:12px 14px;margin-bottom:12px;border:1px solid var(--line);
  border-radius:10px;background:var(--card);font-family:inherit;font-size:14px;color:var(--ink)}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--green)}
.form textarea{height:96px;resize:vertical}
.form .hp{display:none}
.form button{width:100%}
#apply-status{text-align:center;color:var(--green);margin-top:10px;font-size:13px}

/* cta band */
.band{background:var(--green);color:#fff;text-align:center}
.band .hand{color:#b9d3c4;font-size:26px}
.band h2{font-size:30px;margin:.1em 0 8px;color:#fff}
.band p{color:#cfe0d6;margin:0 0 22px}
.band .btn{background:#fff;color:var(--green)}
.band .btn:hover{background:#eef5f0}

/* prose (about / host detail) */
.prose{max-width:680px;margin:0 auto}
.prose h3{font-size:18px;margin:1.5em 0 .3em;color:var(--green)}
.prose p{margin:.5em 0}
/* 主催者：PCは写真左(小)・テキスト右、スマホは縦積み */
.host-layout{display:grid;grid-template-columns:260px 1fr;gap:40px;align-items:start;max-width:860px;margin:0 auto}
.host-photo{width:100%;margin:0;border-radius:14px;box-shadow:0 12px 30px rgba(44,38,32,.14)}
.host-prose{max-width:none;margin:0}
@media(max-width:720px){
  .host-layout{grid-template-columns:1fr;gap:18px;max-width:380px}
}

/* faq */
.faq-wrap{max-width:680px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line);padding:6px 0}
.faq-item summary{cursor:pointer;font-weight:700;list-style:none;padding:14px 2px;font-family:"Shippori Mincho",serif;
  display:flex;justify-content:space-between;align-items:center}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"＋";color:var(--brass)}
.faq-item[open] summary::after{content:"－"}
.faq-item .ans{padding:0 2px 16px;color:var(--muted);font-size:14px}

/* report detail */
.report-detail{max-width:760px;margin:0 auto}
.report-detail .crumb{font-size:12px;color:var(--muted)}
.report-detail .crumb a{color:var(--brass);text-decoration:none}
.report-detail .rmeta{color:var(--green);font-weight:700;margin-top:12px}
.report-detail h1{font-size:30px;margin:.3em 0 1em}
.report-detail p{margin:.6em 0}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:26px}
.gallery img{aspect-ratio:1/1;object-fit:cover;border-radius:6px;background:var(--paper2);
  transition:transform .35s ease;cursor:zoom-in}
.gallery img:hover{transform:scale(1.03)}

/* reveal (progressive enhancement; visible without JS) */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s,transform .6s}
.js .reveal.in{opacity:1;transform:none}

@media(max-width:820px){
  .hero h1{font-size:34px}
  .about-grid,.rep-grid,.gallery{grid-template-columns:1fr}
  header.site nav a:not(.btn){display:none}
  .ticket{flex-direction:column;align-items:flex-start}
  .ticket .date{border-right:none;border-bottom:1px dashed var(--line);padding:0 0 14px}
  .ticket .go,.ticket .closed{margin-left:0}
  section{padding:54px 0}
}