:root {
  /* アクセントカラー：青緑（11/3 本人が決定）。この1行で変えられる */
  --accent: #0f766e;
  --bg: #ffffff;
  --bg-alt: #f5f5f4;
  --ink: #111111;
  --muted: #5f5f5f;
  --line: #e2e2e2;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", sans-serif;
  line-height: 1.9;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}
a { color: var(--ink); }
img { max-width: 100%; display: block; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }

/* 見本の印（公開するときは消す） */
.draft-band {
  background: #fff8d6; color: #5c4a00; text-align: center;
  font-size: 13px; padding: 8px 16px; border-bottom: 1px solid #ecdf9c;
  display: flex; gap: 8px 14px; justify-content: center; align-items: center; flex-wrap: wrap;
}

/* ヘッダー */
header.site {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, .95);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
header.site .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; min-height: 64px; flex-wrap: wrap; padding-top: 8px; padding-bottom: 8px;
}
.logo {
  font-family: "Noto Serif JP", serif; font-weight: 700; font-size: 18px;
  color: var(--ink); text-decoration: none; letter-spacing: .1em; line-height: 1.4;
}
.logo small { display: block; font-family: "Noto Sans JP", sans-serif; font-size: 10px; color: var(--accent); font-weight: 700; letter-spacing: .2em; }
nav.site ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 4px 22px; flex-wrap: wrap; }
nav.site a { text-decoration: none; color: var(--ink); font-size: 14px; font-weight: 500; }
nav.site a:hover { color: var(--accent); }

/* 冒頭 */
.hero { padding: 96px 0 80px; border-bottom: 1px solid var(--line); }
.eyebrow { color: var(--accent); font-weight: 700; letter-spacing: .28em; font-size: 12px; margin: 0 0 14px; }
.hero h1 {
  font-family: "Noto Serif JP", serif; font-size: clamp(34px, 7vw, 56px);
  line-height: 1.3; margin: 0 0 6px; letter-spacing: .08em;
}
.hero .en-name { font-size: 13px; letter-spacing: .3em; color: var(--muted); margin: 0 0 28px; }
.hero .accent-bar { width: 48px; height: 3px; background: var(--accent); margin: 0 0 28px; }
.hero .role { font-size: 15px; color: var(--muted); margin: 0 0 12px; }
.hero .lead { font-size: clamp(16px, 2.4vw, 19px); max-width: 36em; margin: 0 0 36px; }
.btn {
  display: inline-block; text-decoration: none; font-weight: 700; font-size: 15px;
  padding: 13px 28px; border-radius: 4px; border: 2px solid var(--ink);
  transition: background .15s, color .15s, border-color .15s;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); }
.btn-ghost { color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; }

/* 区切り共通 */
section.block { padding: 80px 0; scroll-margin-top: 72px; }
section.alt { background: var(--bg-alt); }
.sec-head { margin-bottom: 40px; }
.sec-head .en { color: var(--accent); font-weight: 700; letter-spacing: .28em; font-size: 12px; margin: 0; }
.sec-head h2 { font-family: "Noto Serif JP", serif; font-size: clamp(24px, 4vw, 30px); margin: 4px 0 0; }
.sec-head p { margin: 10px 0 0; color: var(--muted); }

/* プロフィール */
.profile { display: grid; grid-template-columns: 260px 1fr; gap: 48px; align-items: start; }
.photo { width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover; object-position: 50% 30%; background: #e9e9e9; }
.books a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--line); }
.books a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.books small { display: block; font-size: 12px; color: var(--muted); }
.profile h3 { font-size: 17px; margin: 32px 0 8px; padding-left: 12px; border-left: 3px solid var(--accent); line-height: 1.5; }
.profile h3:first-child { margin-top: 0; }
.history { list-style: none; padding: 0; margin: 0; }
.history li { display: grid; grid-template-columns: 7em 1fr; gap: 12px; padding: 7px 0; border-bottom: 1px solid var(--line); }
.history li span:first-child { color: var(--muted); font-variant-numeric: tabular-nums; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0; list-style: none; }
.tags li { border: 1px solid var(--ink); font-size: 13px; padding: 3px 12px; }

.activities { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 56px; }
.activity { background: var(--bg); border-top: 3px solid var(--ink); padding: 24px; }
.activity .num { font-family: "Noto Serif JP", serif; color: var(--accent); font-size: 26px; line-height: 1; }
.activity h4 { margin: 10px 0 6px; font-size: 17px; }
.activity p { margin: 0; font-size: 14px; color: var(--muted); }

/* セミナー */
.seminars { display: grid; gap: 24px; }
.seminar {
  background: var(--bg); border: 1px solid var(--line); border-left: 4px solid var(--ink);
  padding: 28px; display: grid; grid-template-columns: 1fr 300px; gap: 28px;
}
.seminar.open { border-left-color: var(--accent); }
.seminar.closed { opacity: .65; }
.badges { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.badge { font-size: 12px; font-weight: 700; padding: 2px 10px; border: 1px solid var(--ink); }
.b-open { background: var(--accent); border-color: var(--accent); color: #fff; }
.b-soon { background: var(--ink); color: #fff; }
.b-full { background: #4a4a4a; border-color: #4a4a4a; color: #fff; }
.next-note { margin: 10px 0 0; font-size: 12px; color: var(--muted); line-height: 1.7; word-break: break-all; }
.b-closed { border-color: #9a9a9a; color: #6a6a6a; }
.b-plain { background: transparent; color: var(--ink); }
.seminar .series { font-size: 13px; color: var(--accent); font-weight: 700; letter-spacing: .1em; margin: 0; }
.seminar h3 { font-family: "Noto Serif JP", serif; font-size: 22px; margin: 2px 0 12px; line-height: 1.5; }
.seminar .desc { margin: 0 0 16px; }
.seminar .lecturer { font-size: 14px; color: var(--muted); margin: 0; }
.facts { margin: 0; background: var(--bg-alt); padding: 18px 20px; font-size: 14px; }
.facts div { display: grid; grid-template-columns: 5em 1fr; gap: 8px; padding: 5px 0; border-bottom: 1px solid var(--line); }
.facts div:last-of-type { border-bottom: 0; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; font-weight: 500; }
.facts .btn { width: 100%; text-align: center; margin-top: 16px; }

/* 講師紹介 */
.lecturers { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.lecturer-card { border: 1px solid var(--line); padding: 24px; display: grid; grid-template-columns: 64px 1fr; gap: 18px; }
.avatar { width: 64px; height: 64px; border-radius: 50%; background: var(--ink); display: flex; align-items: center; justify-content: center; font-family: "Noto Serif JP", serif; color: #fff; font-size: 22px; }
img.avatar { object-fit: cover; object-position: 50% 20%; }
.lecturer-card h4 { margin: 0; font-size: 17px; }
.lecturer-card .sub { margin: 0 0 8px; font-size: 13px; color: var(--accent); font-weight: 500; }
.lecturer-card p { margin: 0; font-size: 14px; }

/* 申込の流れ */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: step; }
.steps li { background: var(--bg); padding: 22px 18px; counter-increment: step; }
.steps li::before {
  content: counter(step, decimal-leading-zero); display: block;
  font-family: "Noto Serif JP", serif; font-size: 26px; color: var(--accent); line-height: 1; margin-bottom: 10px;
}
.steps h4 { margin: 0 0 4px; font-size: 16px; }
.steps p { margin: 0; font-size: 14px; color: var(--muted); }

.rules { margin-top: 40px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.rule { background: var(--bg); padding: 22px 24px; }
.rule h4 { margin: 0 0 8px; font-size: 16px; }
.rule ul { margin: 0; padding-left: 1.2em; font-size: 14px; }

/* お知らせ */
.news { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--ink); }
.news li { display: grid; grid-template-columns: 7.5em 6em 1fr; gap: 12px; padding: 16px 4px; border-bottom: 1px solid var(--line); align-items: baseline; }
.news time { color: var(--muted); font-variant-numeric: tabular-nums; font-size: 14px; }
.news .cat { font-size: 12px; text-align: center; border: 1px solid var(--accent); color: var(--accent); padding: 0 6px; }

/* お問い合わせ */
.contact { text-align: center; background: var(--ink); color: #fff; padding: 64px 24px; }
.contact .en { color: var(--accent); filter: brightness(1.6); font-weight: 700; letter-spacing: .28em; font-size: 12px; margin: 0 0 6px; }
.contact h2 { font-family: "Noto Serif JP", serif; margin: 0 0 12px; font-size: clamp(22px, 4vw, 28px); }
.contact p { margin: 0 0 28px; opacity: .85; }
.contact .btn { background: #fff; color: var(--ink); border-color: #fff; }
.contact .btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

footer.site { padding: 40px 0 56px; text-align: center; font-size: 13px; color: var(--muted); }

.ph { background: #fff3c4; padding: 0 3px; }

@media (max-width: 860px) {
  .seminar { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .activities { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .wrap { padding: 0 16px; }
  .hero { padding: 56px 0 48px; }
  section.block { padding: 56px 0; }
  .profile { grid-template-columns: 1fr; gap: 28px; }
  .photo { max-width: 220px; }
  .lecturers, .rules { grid-template-columns: 1fr; }
  .seminar { padding: 22px 18px; }
  .news li { grid-template-columns: auto auto; }
  .news li span.title { grid-column: 1 / -1; }
  .history li { grid-template-columns: 5.5em 1fr; }
}
@media (max-width: 480px) {
  .steps { grid-template-columns: 1fr; }
  nav.site ul { gap: 2px 14px; }
  nav.site a { font-size: 13px; }
}

/* Life Care Dentistry（シリーズ版） */
.logo { font-family: "Noto Serif JP", serif; letter-spacing: .04em; }
.hero h1.brand { font-size: clamp(36px, 7.5vw, 64px); letter-spacing: .02em; line-height: 1.15; margin-bottom: 14px; }
.hero .series-ja { font-family: "Noto Serif JP", serif; font-size: clamp(18px, 3vw, 24px); margin: 0 0 28px; letter-spacing: .08em; }
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.pillar { border-top: 3px solid var(--ink); padding: 22px 4px 0; }
.pillar .num { font-family: "Noto Serif JP", serif; color: var(--accent); font-size: 26px; line-height: 1; }
.pillar h3 { margin: 10px 0 6px; font-size: 18px; }
.pillar p { margin: 0; font-size: 14px; color: var(--muted); }
.content-no { font-family: "Noto Serif JP", serif; color: var(--accent); font-size: 13px; font-weight: 700; letter-spacing: .2em; margin: 0 0 8px; }
.organizer-name { margin: 0 0 4px; font-family: "Noto Serif JP", serif; font-size: 24px; font-weight: 700; }
.organizer-role { margin: 0 0 28px; color: var(--muted); font-size: 14px; }
.organizer-role strong { color: var(--accent); }
.lect-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.lect-card { display: block; text-decoration: none; color: var(--ink); border: 1px solid var(--line); padding: 20px 16px; text-align: center; background: var(--bg); transition: border-color .15s; }
.lect-card:hover { border-color: var(--accent); }
.lect-card .avatar { margin: 0 auto 12px; }
.lect-card h3 { margin: 0; font-size: 16px; }
.lect-card .sub { margin: 2px 0 10px; font-size: 12px; color: var(--muted); line-height: 1.6; }
.lect-card .more { font-size: 12px; color: var(--accent); font-weight: 700; }
.lect-profile { display: grid; grid-template-columns: 96px 1fr; gap: 24px; padding: 36px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 72px; }
.lect-profile .avatar { width: 96px; height: 96px; font-size: 32px; }
.lect-profile h2 { margin: 0; font-family: "Noto Serif JP", serif; font-size: 24px; }
.lect-profile .sub { margin: 2px 0 14px; color: var(--accent); font-size: 14px; font-weight: 500; }
.lect-profile p { margin: 0 0 10px; }
.lect-profile .in-charge { font-size: 13px; color: var(--muted); }
.back-link { display: inline-block; margin: 8px 0 0; font-size: 14px; }
@media (max-width: 860px) {
  .lect-grid { grid-template-columns: repeat(2, 1fr); }
  .pillars { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .lect-profile { grid-template-columns: 1fr; gap: 12px; }
}

/* 講師のイニシャル */
.avatar.initials { font-family: "Noto Serif JP", serif; font-size: 20px; letter-spacing: .08em; background: var(--accent); }
.lect-profile .avatar.initials { font-size: 28px; }

/* 講師のイラスト */
img.avatar.illust { object-fit: cover; object-position: 50% 8%; background: #ffffff; border: 1px solid var(--line); }
.lect-card img.avatar.illust, .lect-card .avatar { width: 84px; height: 84px; }