/* Tubone Base MEMBERS — 共通スタイル（tubone.jp トークン準拠） */
:root {
  --green:     #076D5C;
  --green-mid: #8aa39a;
  --green-bg:  #e0efeb;
  --orange:    #C7681D;
  --orange-bg: #faf1e8;
  --ink:       #111111;
  --sub:       #555555;
  --sub2:      #6b6b6b;
  --rule:      #e8e8e8;
  --bg:        #f7f7f5;
  --white:     #ffffff;
  --ease:      cubic-bezier(.16,1,.3,1);
}
* { margin:0; padding:0; box-sizing:border-box; }
body {
  font-family: "Inter", "Noto Sans JP", "Hiragino Sans", sans-serif;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt" 1, "kern" 1;
  line-height: 1.7;
}
a { color: inherit; }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }

/* NAV */
nav {
  background: var(--white);
  border-bottom: 1px solid var(--rule);
  position: sticky; top: 0; z-index: 50;
}
.nav-inner {
  max-width: 1080px; margin: 0 auto; padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
}
.brand { font-weight: 700; letter-spacing: 1px; font-size: 15px; text-decoration: none; }
.brand small { color: var(--sub2); font-weight: 400; margin-left: 8px; font-size: 11px; letter-spacing: 2px; }
.nav-links { display: flex; gap: 18px; font-size: 12.5px; color: var(--sub); flex-wrap: wrap; }
.nav-links a { text-decoration: none; padding-bottom: 2px; }
.nav-links a.active-green { color: var(--green); border-bottom: 2px solid var(--green); font-weight: 600; }
.nav-links a.active-orange { color: var(--orange); border-bottom: 2px solid var(--orange); font-weight: 600; }

/* HERO */
.hero { background: var(--white); border-bottom: 1px solid var(--rule); padding: 46px 0 38px; }
.kicker { font-size: 11px; letter-spacing: 3px; font-weight: 700; text-transform: uppercase; margin-bottom: 12px; }
.kicker.green { color: var(--green); }
.kicker.orange { color: var(--orange); }
.hero h1 { font-size: 30px; letter-spacing: -0.5px; line-height: 1.25; margin-bottom: 10px; }
.hero .lede { color: var(--sub); font-size: 14px; max-width: 600px; }

main { padding: 40px 0 30px; }
.sec { margin-bottom: 44px; }
.sec-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 4px; }
.sec-head h2 { font-size: 20px; letter-spacing: 0.5px; }
.sec-desc { font-size: 13px; color: var(--sub); margin-bottom: 18px; }

/* コースカード */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }
.card {
  background: var(--white); border: 1px solid var(--rule); border-radius: 8px;
  padding: 20px 20px 18px; text-decoration: none; display: block;
  transition: border-color .25s, transform .25s var(--ease);
  position: relative;
}
.card:hover { transform: translateY(-2px); }
.card.green-card { border-top: 3px solid var(--green); }
.card.green-card:hover { border-color: var(--green); border-top-color: var(--green); }
.card.orange-card { border-top: 3px solid var(--orange); }
.card.orange-card:hover { border-color: var(--orange); border-top-color: var(--orange); }
.card .cat { font-size: 10.5px; font-weight: 700; letter-spacing: 2px; margin-bottom: 8px; }
.green-card .cat { color: var(--green); }
.orange-card .cat { color: var(--orange); }
.card h3 { font-size: 16px; line-height: 1.5; margin-bottom: 6px; }
.card .meta { font-size: 12px; color: var(--sub2); }
.card .badge {
  position: absolute; top: 16px; right: 16px;
  font-size: 10px; font-weight: 700; letter-spacing: 1px;
  background: var(--green-bg); color: var(--green);
  padding: 3px 10px; border-radius: 980px;
}
.card.wide { grid-column: 1 / -1; display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.card.wide .body { flex: 1; min-width: 240px; }
.card.wide .desc { font-size: 13px; color: var(--sub); margin-top: 4px; }
.pill {
  display: inline-block; font-size: 12.5px; font-weight: 700; letter-spacing: 0.5px;
  padding: 11px 26px; border-radius: 980px; text-decoration: none; color: var(--white);
}
.pill.orange { background: var(--orange); }
.pill.green { background: var(--green); }
.pill.ghost { background: var(--white); color: var(--ink); border: 1px solid var(--rule); font-weight: 600; }

/* 汎用ブロック */
.block { background: var(--white); border: 1px solid var(--rule); border-radius: 8px; padding: 24px 24px 20px; margin-bottom: 20px; }
.block h2 { font-size: 18px; margin-bottom: 6px; }
.block .desc { font-size: 13px; color: var(--sub); margin-bottom: 14px; }
.block.green-top { border-top: 3px solid var(--green); }
.block.orange-top { border-top: 3px solid var(--orange); }

/* 書籍リスト */
.book-list { list-style: none; }
.book-list li { display: flex; gap: 12px; align-items: baseline; padding: 10px 2px; border-bottom: 1px solid var(--rule); font-size: 13.5px; }
.book-list li:last-child { border-bottom: none; }
.book-list .author { margin-left: auto; font-size: 11.5px; color: var(--sub2); white-space: nowrap; }

/* コースページ：章アコーディオン */
.crumb { font-size: 12px; color: var(--sub2); margin-bottom: 14px; }
.crumb a { color: var(--sub2); text-decoration: none; }
.crumb a:hover { color: var(--ink); }
.section-box { background: var(--white); border: 1px solid var(--rule); border-radius: 8px; margin-bottom: 12px; overflow: hidden; }
.section-box summary {
  cursor: pointer; list-style: none; padding: 16px 20px;
  display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 14.5px;
}
.section-box summary::-webkit-details-marker { display: none; }
.section-box summary::before { content: "▸"; color: var(--green); font-size: 12px; transition: transform .2s; }
.section-box[open] summary::before { transform: rotate(90deg); }
.section-box summary .count { margin-left: auto; font-size: 11.5px; color: var(--sub2); font-weight: 400; }
.lesson-row {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 20px 12px 40px; border-top: 1px solid var(--rule);
  font-size: 13.5px; text-decoration: none;
}
.lesson-row:hover { background: var(--bg); }
.lesson-row .ico { color: var(--green); font-size: 11px; }
.lesson-row .lock { margin-left: auto; font-size: 11px; color: var(--sub2); letter-spacing: 1px; }

/* 学習チェック */
.lesson-row .done-box {
  margin-left: auto; width: 19px; height: 19px; flex: none;
  border: 2px solid var(--rule); border-radius: 4px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 11px; transition: all .15s;
}
.lesson-row.done .done-box { background: var(--green); border-color: var(--green); }
.lesson-row.done .done-box::after { content: "✓"; }
.lesson-row.done { color: var(--sub2); }

/* 質問・相談ノート（受講生特典の二役ボタン用） */
.note-green {
  display: none; margin-top: 14px; background: var(--green-bg);
  border-radius: 6px; padding: 12px 15px; font-size: 12.5px; line-height: 1.7;
}
.note-green a { color: var(--green); font-weight: 700; text-decoration: none; white-space: nowrap; }
.note-green.open { display: block; }

/* マイページ進捗バー */
.pbar-row { padding: 14px 2px; border-bottom: 1px solid var(--rule); }
.pbar-row:last-child { border-bottom: none; }
.pbar-head { display: flex; justify-content: space-between; align-items: baseline; font-size: 13.5px; margin-bottom: 8px; }
.pbar-head .nums { font-size: 12px; color: var(--sub2); }
.pbar-track { height: 6px; background: var(--rule); border-radius: 3px; overflow: hidden; }
.pbar-fill { height: 100%; border-radius: 3px; transition: width .5s var(--ease); }
.pbar-fill.green { background: var(--green); }
.pbar-fill.orange { background: var(--orange); }

/* レッスンページ */
.video-ph {
  aspect-ratio: 16 / 9; background: #0b1710; border-radius: 8px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: rgba(255,255,255,.7); font-size: 13px; gap: 10px; margin-bottom: 22px;
}
.video-ph .play-circle {
  width: 58px; height: 58px; border-radius: 50%; background: rgba(255,255,255,.12);
  display: flex; align-items: center; justify-content: center; font-size: 20px; color: #fff;
}
.lesson-nav { display: flex; justify-content: space-between; gap: 10px; margin-top: 26px; }

footer { text-align: center; font-size: 11px; color: var(--sub2); padding: 28px 0 40px; letter-spacing: 1px; }

@media (max-width: 560px) {
  .hero h1 { font-size: 24px; }
}