/* ============================================================
 * join.css（サークル入会のながれ 専用）
 * - about.php の「ランドネ感」を踏襲（紙・緑・余白・線）
 * ============================================================ */

:root{
  --landne-green: #2e6b4f;
  --landne-ink: #1f2b26;
  --landne-muted: rgba(31,43,38,.72);
  --landne-line: rgba(31,43,38,.12);
  --paper: #fbfaf6;
  --paper-2: #f4f2ea;
  --shadow: 0 10px 28px rgba(0,0,0,.08);
  --radius: 18px;
}

body{
  background:
    radial-gradient(1200px 900px at 20% 0%, rgba(46,107,79,.10), transparent 52%),
    radial-gradient(900px 700px at 90% 20%, rgba(46,107,79,.08), transparent 55%),
    linear-gradient(180deg, var(--paper), var(--paper-2));
  color: var(--landne-ink);
}

.container{ max-width: 1120px; }

.section{ padding: 54px 0; }

.kicker{
  display:flex; align-items:center; gap:.55rem;
  color: var(--landne-green);
  letter-spacing: .08em;
  font-size: .92rem;
  margin: 0 0 10px;
}
.kicker svg{ width: 18px; height: 18px; }

.join .kicker__icon{
  width: 1.1em;
  height: auto;
  vertical-align: middle;
}

h1,h2,h3,h4{
  font-family: system-ui, -apple-system, "Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic", sans-serif;
  letter-spacing: .02em;
}
h1{ font-size: clamp(1.7rem, 2.5vw, 2.35rem); line-height: 1.25; margin: 0 0 12px; }
h2{ font-size: clamp(1.28rem, 2.0vw, 1.75rem); margin: 0 0 14px; }
h3{ font-size: 1.12rem; margin: 0 0 10px; }
h4{ font-size: 1.02rem; margin: 0 0 10px; }

p{ margin: 0; }
.lead{ font-size: 1.06rem; line-height: 1.9; color: var(--landne-muted); }
.sub{ line-height: 1.9; color: var(--landne-muted); }

.paper{
  background: linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.78));
  border: 1px solid var(--landne-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.tree{
  display:inline-flex; align-items:center; justify-content:center;
  width: 34px; height: 34px;
  border-radius: 999px;
  background: rgba(46,107,79,.10);
  border: 1px solid rgba(46,107,79,.18);
  flex: 0 0 auto;
}
.tree svg{ width: 18px; height: 18px; }
.tree{ color: rgba(46,107,79,.95); }

/* 見出しライン */
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap: 16px;
  margin-bottom: 16px;
}
.section-head .line{
  height: 1px;
  flex: 1;
  background: linear-gradient(90deg, rgba(46,107,79,.28), rgba(46,107,79,0));
  margin-left: 12px;
}

/* ボタン：既存 .btn を尊重しつつアクセント */
.btn{ border-radius: 999px; }
.btn.btn--accent,
.btn--accent{
  background: var(--landne-green);
  border-color: rgba(46,107,79,.45);
  color: #fff;
}
.btn.btn--accent:hover,
.btn--accent:hover{ filter: brightness(0.96); }

/* -------------------------
   HERO
------------------------- */
.join-hero{ padding: 38px 0 18px; }
.join-hero__grid{
  display:grid;
  grid-template-columns: 1.10fr .90fr;
  gap: 18px;
  align-items: stretch;
}
.join-hero__card{ padding: 24px 22px; }
.join-hero__cta{ display:flex; flex-wrap:wrap; gap: 10px; margin-top: 14px; }
.join-hero__note{ margin-top: 12px; }

.join-hero__aside{ padding: 18px 18px; }
.join-hero__asideTitle{ margin: 0 0 10px; }

/* -------------------------
   Steps
------------------------- */
.step-list{
  list-style: none;
  margin: 0;
  padding: 0;
  display:grid;
  gap: 14px;
}

.step{ padding: 18px 16px; }
.step__head{
  display:flex;
  gap: 12px;
  align-items: baseline;
  margin-bottom: 8px;
}
.step__no{
  width: 38px; height: 38px;
  border-radius: 999px;
  display:inline-flex;
  align-items:center; justify-content:center;
  background: rgba(46,107,79,.10);
  border: 1px solid rgba(46,107,79,.18);
  color: rgba(46,107,79,.95);
  font-weight: 800;
  letter-spacing: .02em;
  flex: 0 0 auto;
}
.step__title{ margin: 0; }
.step__text{
  margin: 0;
  line-height: 1.9;
  color: var(--landne-muted);
}
.step__action{ margin-top: 12px; display:flex; flex-wrap:wrap; gap: 10px; }

.note{ color: rgba(31,43,38,.62); }

.callout{
  margin-top: 12px;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px dashed rgba(46,107,79,.28);
  background: rgba(46,107,79,.06);
}
.callout__text{
  margin: 0;
  line-height: 1.9;
  color: rgba(31,43,38,.70);
}

/* 2カラム（A/B） */
.two-col{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  align-items: start;
  margin-top: 12px;
}
.panel{
  padding: 14px 14px;
  border-radius: 16px;
  border: 1px solid rgba(31,43,38,.12);
  background: rgba(255,255,255,.85);
}
.panel--soft{
  background: rgba(255,255,255,.78);
}
.panel__title{ margin: 0 0 8px; }
.panel__text{ margin: 0; line-height: 1.9; color: rgba(31,43,38,.70); }

.list{
  margin: 0;
  padding-left: 1.2rem;
  color: rgba(31,43,38,.72);
  line-height: 1.9;
}
.list li{ margin: .35rem 0; }

/* CTA */
.cta{ padding: 20px 18px; }
.cta__title{ margin: 0 0 10px; }
.cta__actions{ display:flex; flex-wrap:wrap; gap: 10px; margin-top: 14px; }

/* Responsive */
@media (max-width: 980px){
  .join-hero__grid{ grid-template-columns: 1fr; }
  .two-col{ grid-template-columns: 1fr; }
}