/* KotoBloom — halaman detail kelas (Batch 5) */
:root{
  /* 色は旧LP（kotobloom.netlify.app）と統一（2026-07-23 吉川指示）。index.html と同値 */
  --navy:#1E3A5F; --navy-surface:#1E3A5F; --gold:#C4964F; --gold-deep:#A67C3B;
  --wa:#25D366; --cream:#F5F0E5; --cream-deep:#EDE4CE; --white:#FFFFFF; --ink:#1F1D1A;
  --line:#C9BDA0;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Plus Jakarta Sans',system-ui,sans-serif;color:var(--ink);background:var(--cream);font-size:15px;line-height:1.6;padding-bottom:76px}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.wrap{max-width:520px;margin:0 auto;padding:0 16px}
h1{font-size:28px;font-weight:800;line-height:1.2}
h2{font-size:20px;font-weight:800;line-height:1.3}
.sec{padding:40px 0}
.sec-num{color:var(--gold-deep);font-weight:800;font-size:13px;letter-spacing:.12em;text-transform:uppercase;display:block;margin-bottom:8px}
.sec-num::after{content:"";display:block;width:32px;height:2px;background:var(--gold);margin-top:6px}

/* top bar */
.bar{background:var(--navy);color:#fff;position:sticky;top:0;z-index:40}
.bar .wrap{display:flex;align-items:center;gap:10px;height:52px}
.bar .back{color:var(--gold);font-weight:800;font-size:14px;white-space:nowrap}
.bar .logo{margin-left:auto;display:flex;align-items:center;flex:0 0 auto}
.bar .logo img{display:block;height:26px;width:auto;max-width:130px;object-fit:contain}

/* hero */
.khero{background:var(--navy-surface);color:#fff;position:relative;overflow:hidden;padding:34px 0 30px}
.khero::before{content:"";position:absolute;top:-110px;right:-110px;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(196,150,79,.22),transparent 70%)}
.khero .wrap{position:relative}
.klevel{display:inline-block;border:1px solid var(--gold);color:var(--gold);border-radius:999px;padding:4px 12px;font-size:11px;font-weight:800;letter-spacing:.08em;margin-bottom:12px}
.khero h1{margin-bottom:8px}
.klead{font-size:14px;opacity:.85;margin-bottom:18px}
.kfacts{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:20px}
.kfact{border:1px solid rgba(255,255,255,.22);border-radius:10px;padding:8px 10px}
.kfact span{display:block;font-size:10px;opacity:.6;letter-spacing:.06em;text-transform:uppercase}
.kfact b{font-size:13.5px;font-weight:800}
.kprice{border-top:1px solid rgba(196,150,79,.45);padding-top:14px}
.knew{font-size:34px;font-weight:800;color:var(--gold);line-height:1.15}
.knote{font-size:12px;opacity:.7;margin-top:2px}

/* alur / minggu */
.mg{border-left:2px solid rgba(196,150,79,.35);padding-left:16px;margin-top:18px;position:relative}
.mg::before{content:"";position:absolute;left:-7px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--gold)}
.mg-head{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.mg-no{color:var(--gold-deep);font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}
.mg-title{font-size:17px;font-weight:800}
.mg-goal{font-size:12.5px;opacity:.8;width:100%}
/* 週だけの一覧（セッションカードを置かない形）。行間を詰めすぎない */
.mg:last-child{margin-bottom:0}
.mg-head:only-child{margin-bottom:0}
.ses{background:var(--cream);border:1px solid rgba(30,58,95,.08);border-radius:12px;padding:12px 14px;margin-bottom:8px}
.ses .no{display:inline-block;background:var(--navy);color:var(--gold);font-size:11px;font-weight:800;border-radius:6px;padding:2px 8px;margin-bottom:6px}
.ses b{display:block;font-size:14.5px;line-height:1.35;margin-bottom:3px}
.ses p{font-size:12.5px;opacity:.8;line-height:1.45}
.ses p::before{content:"→ ";color:var(--gold-deep);font-weight:800}

/* daily cycle (kosakata) / steps (privat) */
.step{display:flex;gap:12px;align-items:flex-start;background:var(--cream);border-radius:12px;padding:14px;margin-bottom:8px}
.step .n{flex:0 0 auto;width:28px;height:28px;border-radius:50%;background:var(--gold);color:var(--navy);font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center}
.step b{display:block;font-size:14.5px;margin-bottom:2px}
.step p{font-size:12.5px;opacity:.8}

/* tabel jadwal */
.tbl{width:100%;border-collapse:collapse;margin-top:12px;font-size:13px}
.tbl th{background:var(--navy);color:#fff;text-align:left;padding:8px 10px;font-size:12px;font-weight:800}
.tbl td{padding:8px 10px;border-bottom:1px solid rgba(30,58,95,.1)}
.tbl tr:nth-child(even) td{background:var(--cream)}

/* bonus */
.bonus{background:var(--cream);background-image:radial-gradient(rgba(30,58,95,.05) 1px,transparent 1px);background-size:14px 14px}
.blist{display:grid;gap:8px;margin-top:14px}
.blist div{background:#fff;border:1px solid rgba(196,150,79,.5);border-radius:10px;padding:10px 14px;font-size:13.5px;font-weight:600}
.blist div span{color:var(--gold-deep);font-weight:800;margin-right:6px}

/* next steps */
.nav-kelas{display:grid;gap:10px;margin-top:16px}
.nav-kelas a{display:flex;align-items:center;justify-content:space-between;gap:10px;border:1.5px solid var(--gold);border-radius:12px;padding:14px 16px;font-weight:800;font-size:14px}
.nav-kelas a small{display:block;font-weight:400;font-size:11.5px;opacity:.7}
.nav-kelas a .ar{color:var(--gold);font-size:18px}

/* CTA */
.btn-wa{display:flex;align-items:center;justify-content:center;gap:10px;height:56px;border-radius:28px;background:var(--wa);color:#fff;font-weight:800;font-size:16px;width:100%;box-shadow:0 4px 14px rgba(37,211,102,.35);margin-top:18px}
.micro{font-size:13px;text-align:center;margin-top:8px;opacity:.78}
.sticky{position:fixed;bottom:0;left:0;right:0;background:var(--navy);padding:8px 16px;z-index:50;border-top:1px solid rgba(196,150,79,.5)}
.sticky a{display:flex;align-items:center;justify-content:center;gap:8px;height:48px;border-radius:24px;background:var(--wa);color:#fff;font-weight:800;font-size:15px;max-width:520px;margin:0 auto}
.deadline{display:flex;align-items:center;justify-content:center;gap:8px;border-top:1px solid rgba(196,150,79,.4);border-bottom:1px solid rgba(196,150,79,.4);padding:12px 0;margin:20px 0;text-align:center;font-weight:800;color:var(--gold-deep);font-size:14px}

@media(min-width:640px){
  .wrap{max-width:640px}
  h1{font-size:32px}
  .kfacts{grid-template-columns:repeat(4,1fr)}
}

/* 打ち消し線。元値は配布PDFに実在する Kosakata 定価 Rp 200.000 のみ使う。34番7.7章 */
.kpair{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.kold{position:relative;display:inline-block;color:rgba(255,255,255,.5);font-weight:600;font-size:19px;white-space:nowrap}
.kold::after{content:"";position:absolute;left:-2px;right:-2px;top:46%;height:3px;background:#B23B2A;transform:translateY(-50%) rotate(-3deg)}
.knote .kold{font-size:12px;margin:0 4px}
.knote .kold::after{height:2px;top:46%}
.knote b{color:var(--gold);font-weight:800}

/* 教材の参考画像（2026-07-27 追加）。スマホは縦積み、640px以上で2枚並べる */
.contoh .cgrid{display:grid;gap:16px;margin-top:14px}
.contoh figure{margin:0}
.contoh img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:10px;background:#fff}
.contoh figcaption{margin-top:8px;font-size:12.5px;line-height:1.65;opacity:.8}
.contoh figcaption b{display:block;font-size:13.5px;font-weight:800;opacity:1;margin-bottom:2px}
.contoh-note{text-align:left;margin-top:14px}
@media(min-width:640px){
  /* アプリは縦長・スライドは横長。1:1 にすると高さが倍ちがうので幅の比を変えて揃える */
  .contoh .cgrid{grid-template-columns:0.72fr 1.28fr;align-items:start}
}