:root{
  --navy:#1e2f4a; --navy-d:#142238; --gold:#c08a35; --gold-l:#f3e4c4; --cream:#fbf7ef; --paper:#fffdf9;
  --sage:#e9efe8; --ink:#2a2a2a; --muted:#6f6a60; --line:#e6dfd0; --ok:#1d6b43; --err:#a12626;
  --serif:"Shippori Mincho","Noto Serif JP","Noto Serif KR","Hiragino Mincho ProN",serif;
  --sans:"Noto Sans JP","Noto Sans KR","Hiragino Sans","Malgun Gothic",Meiryo,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--cream);line-height:1.85;font-size:16px}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
a{color:var(--navy)}
h1,h2,h3{font-family:var(--serif);color:var(--navy-d);line-height:1.5;font-weight:700}
h1{font-size:2rem;margin:2rem 0 1rem}
h2{font-size:1.5rem;margin:3rem 0 1.1rem;display:flex;align-items:center;gap:.7rem}
h2::before{content:"";width:28px;height:3px;background:var(--gold);border-radius:2px;flex:none}
h3{font-size:1.15rem;margin:1.3rem 0 .4rem}

/* ヘッダー */
.site-header{background:rgba(255,253,249,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.header-row{display:flex;flex-wrap:wrap;align-items:center;gap:6px 24px;padding-top:12px;padding-bottom:12px}
.brand{text-decoration:none;display:flex;flex-direction:column;line-height:1.25;color:var(--navy-d)}
.brand-en{font-family:var(--serif);font-weight:700;font-size:1.2rem;letter-spacing:.02em}
.brand-ja{font-size:.7rem;color:var(--muted);letter-spacing:.08em}
.nav{display:flex;flex-wrap:wrap;gap:2px 6px;flex:1;justify-content:flex-end}
.nav a{color:var(--ink);text-decoration:none;font-size:.92rem;padding:6px 12px;border-radius:99px}
.nav a:hover{background:var(--gold-l)}
.nav a.active{background:var(--navy);color:#fff}
.lang{display:flex;gap:2px;border:1px solid var(--line);border-radius:99px;padding:2px;background:#fff}
.lang a{color:var(--muted);text-decoration:none;font-size:.8rem;padding:2px 10px;border-radius:99px}
.lang a.active{background:var(--gold);color:#fff}

/* ヒーロー */
.hero{position:relative;overflow:hidden;color:#fff;background:linear-gradient(135deg,#243a5c 0%,#142238 70%);
  border-radius:0 0 28px 28px;margin:0;padding:72px 0 80px}
.hero.has-photo{background-size:cover;background-position:center}
.hero.has-photo::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(20,34,56,.88),rgba(20,34,56,.55))}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:520px;height:520px;border-radius:50%;
  border:1.5px solid rgba(243,228,196,.28);box-shadow:0 0 0 46px rgba(243,228,196,.05),0 0 0 100px rgba(243,228,196,.04)}
.hero-in{position:relative;z-index:1;max-width:1040px;margin:0 auto;padding:0 20px}
.eyebrow{font-size:.8rem;letter-spacing:.28em;color:var(--gold-l);text-transform:uppercase;margin:0 0 14px}
.hero h1{color:#fff;font-size:2.6rem;margin:0 0 .5rem;max-width:18em}
.hero .lead{font-family:var(--serif);font-size:1.35rem;color:var(--gold-l);margin:.4rem 0 1.2rem}
.hero p{max-width:36em;color:#e3e8f1;margin:.6rem 0}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero .btn{background:var(--gold);color:#fff;padding:12px 26px;font-weight:600}
.hero .btn:hover{background:#a97424}
.hero .btn.ghost{background:transparent;border:1.5px solid rgba(255,255,255,.55);color:#fff}
.hero .btn.ghost:hover{background:rgba(255,255,255,.12)}

/* 特徴 */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:-34px;position:relative;z-index:2}
.feat{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:22px 22px 20px;box-shadow:0 6px 18px rgba(30,47,74,.07)}
.feat .num{font-family:var(--serif);color:var(--gold);font-size:1.7rem;line-height:1}
.feat h3{margin:.4rem 0 .3rem;font-size:1.08rem}
.feat p{margin:0;font-size:.93rem;color:#4a463f}

/* カード・バッジ */
.card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:18px 22px;margin:14px 0}
.card h3{margin-top:0}
.course-card{border-left:5px solid var(--gold)}
.badge{display:inline-block;font-family:var(--sans);font-size:.72rem;padding:1px 10px;border-radius:99px;background:var(--gold);color:#fff;margin-right:8px;vertical-align:middle;letter-spacing:.05em}
.badge.ended{background:#8d887d}
.badge.preparing{background:#6f86a3}
dl.meta{display:grid;grid-template-columns:6.5em 1fr;gap:4px 14px;margin:.8rem 0}
dl.meta dt{color:var(--muted)} dl.meta dd{margin:0}
table.tbl{width:100%;border-collapse:collapse;background:var(--paper);font-size:.93rem;border-radius:10px;overflow:hidden}
.tbl th,.tbl td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.tbl th{background:#f3ecdc;font-weight:600}
.table-scroll{overflow-x:auto}
ul.plain{padding-left:1.2rem}
.news-list{list-style:none;padding:0;background:var(--paper);border:1px solid var(--line);border-radius:14px}
.news-list li{border-bottom:1px solid var(--line);padding:12px 20px}
.news-list li:last-child{border-bottom:0}
.news-list time{color:var(--gold);margin-right:12px;font-size:.88rem;font-weight:600}
.band{background:var(--sage);border-radius:18px;padding:26px 28px;margin:44px 0 0}
.band h2{margin-top:0}
.band ul{margin:.3rem 0 0;padding-left:1.2rem}

/* フォーム */
form .row{margin:14px 0}
label{display:block;font-weight:600;margin-bottom:5px;font-size:.93rem}
input[type=text],input[type=email],input[type=tel],input[type=password],input[type=number],
input[type=datetime-local],input[type=file],select,textarea{
  width:100%;padding:10px 12px;border:1px solid #d3cab5;border-radius:8px;font:inherit;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid var(--gold);outline-offset:0;border-color:var(--gold)}
textarea{min-height:130px}
.check{display:flex;gap:8px;align-items:center;font-weight:400}
.check input{width:auto}
button,.btn{display:inline-block;background:var(--navy);color:#fff;border:0;border-radius:99px;padding:10px 24px;
  font:inherit;cursor:pointer;text-decoration:none;transition:background .15s}
button:hover,.btn:hover{background:var(--navy-d)}
button.sub,.btn.sub{background:transparent;color:var(--navy);border:1.5px solid var(--navy)}
button.sub:hover,.btn.sub:hover{background:var(--navy);color:#fff}
button.danger{background:var(--err)}
.flash{padding:12px 16px;border-radius:10px;margin:14px 0}
.flash.ok{background:#e6f3ec;color:var(--ok)} .flash.err{background:#fbe9e9;color:var(--err)}
.flash.info{background:#fff3d6;color:#6a5200;word-break:break-all}
.hp{position:absolute;left:-9999px;height:0;overflow:hidden}
.small{font-size:.86rem;color:var(--muted)}
.post{border-bottom:1px solid var(--line);padding:10px 0}
.post .who{font-size:.85rem;color:var(--muted)}
.inline{display:inline}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}

/* フッター */
.site-footer{background:var(--navy-d);color:#cfd6e2;margin-top:64px;padding:34px 0;font-size:.9rem}
.site-footer .slogan{font-family:var(--serif);color:var(--gold-l);font-size:1.05rem}

/* 管理画面 */
.admin-nav{background:#2b2b2b;padding:8px 0}
.admin-nav a{color:#ddd;margin-right:14px;text-decoration:none;font-size:.92rem}
.admin-nav a:hover{color:#fff}

@media(max-width:760px){
  h1{font-size:1.6rem} .hero{padding:48px 0 62px} .hero h1{font-size:1.9rem} .hero .lead{font-size:1.1rem}
  .features{grid-template-columns:1fr;margin-top:-26px}
  .site-header{position:static}
  .brand{flex:1}.lang{order:2}
  .nav{order:3;flex:0 0 100%;flex-wrap:nowrap;overflow-x:auto;white-space:nowrap;justify-content:flex-start;padding-bottom:2px}
  .grid2{grid-template-columns:1fr}
  dl.meta{grid-template-columns:5em 1fr}
}