:root {
  --bg: #f6f7fb; --card: #fff; --text: #1d2033; --muted: #687087; --line: #e3e6ef;
  --navy: #161a36; --navy2: #252b5a; --accent: #22c55e; --amber: #f59e0b; --violet: #8b5cf6; --ended: #9aa1b5;
  --radius: 14px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.85 "Hiragino Sans", "Yu Gothic UI", "Meiryo", system-ui, sans-serif; }
a { color: #3b5bdb; }
img { max-width: 100%; height: auto; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }

/* ヘッダー・フッター */
.site-head { background: var(--navy); color: #fff; }
.head-in { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; padding-top: 12px; padding-bottom: 12px; }
.logo { font-family: "DotGothic16", monospace; font-size: 24px; color: #fff; text-decoration: none; letter-spacing: .04em; }
.logo-mark { color: var(--accent); margin-right: 6px; }
.site-head nav { display: flex; flex-wrap: wrap; gap: 4px 16px; margin-left: auto; font-size: 14px; }
.site-head nav a { color: #cdd3f5; text-decoration: none; }
.site-head nav a:hover { color: #fff; }
.site-foot { margin-top: 64px; background: var(--navy); color: #cdd3f5; font-size: 13px; padding: 28px 0; }
.site-foot .foot-name { font-family: "DotGothic16", monospace; font-size: 20px; color: #fff; margin: 0; }
.site-foot nav { display: flex; flex-wrap: wrap; gap: 4px 16px; margin: 12px 0; }
.site-foot nav a { color: #fff; }
.site-foot .note { color: #9aa3d0; }
.site-foot .copy { margin-bottom: 0; }

/* トップ */
.hero { margin: 24px 0 8px; padding: 36px 24px; border-radius: var(--radius); color: #fff; text-align: center;
  background: radial-gradient(120% 140% at 10% 0%, var(--navy2), var(--navy) 60%); position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 22px 22px; }
.hero-title { font-family: "DotGothic16", monospace; font-size: clamp(34px, 7vw, 54px); font-weight: 400; margin: 0; letter-spacing: .05em; }
.hero p { margin: 8px 0 0; color: #cdd3f5; position: relative; z-index: 1; }
.hero a { color: var(--accent); }
.sec { margin-top: 36px; }
.sec-title { font-size: 20px; margin: 0 0 14px; display: flex; align-items: center; gap: 10px; }
.sec-title .more { margin-left: auto; font-size: 14px; font-weight: 400; }
.page-title { font-size: 26px; margin: 28px 0 4px; }
.lead { color: var(--muted); margin-top: 0; }
.empty { color: var(--muted); background: var(--card); border: 1px dashed var(--line); border-radius: var(--radius); padding: 18px; }

/* 記事カード */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); transition: transform .15s, box-shadow .15s; }
.card:hover { transform: translateY(-2px); box-shadow: 0 12px 28px -18px rgba(22,26,54,.45); }
.card-link { display: block; padding: 16px 18px; color: inherit; text-decoration: none; height: 100%; }
.card-top { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.card h3 { font-size: 17px; line-height: 1.5; margin: 10px 0 6px; }
.card .prize { margin: 0 0 4px; font-weight: 700; font-size: 14px; }
.card .excerpt { margin: 0 0 8px; color: var(--muted); font-size: 14px; line-height: 1.7; }
.card time { color: var(--muted); font-size: 12px; }
.card.is-ended { opacity: .62; }
.cat { display: inline-block; font-size: 12px; font-weight: 700; color: #fff; background: var(--c, var(--navy)); border-radius: 999px; padding: 1px 10px; }
.dl { display: inline-block; font-size: 12px; font-weight: 700; color: #b45309; background: #fef3c7; border-radius: 999px; padding: 1px 10px; }
.dl.soon { color: #fff; background: #ef4444; }
.dl.ended { color: #fff; background: var(--ended); }
.draft { font-size: 12px; color: #fff; background: #ef4444; border-radius: 999px; padding: 1px 8px; }

/* 記事ページ */
.crumb { font-size: 13px; color: var(--muted); margin: 20px 0 0; }
.crumb a { color: var(--muted); }
.post { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(18px, 4vw, 40px); margin-top: 12px; }
.post h1 { font-size: clamp(22px, 4vw, 30px); line-height: 1.45; margin: 10px 0 6px; }
.post .meta { color: var(--muted); font-size: 13px; margin: 0; display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: center; }
.tag { color: var(--muted); font-size: 13px; }
.prose { margin-top: 20px; }
.prose h2 { font-size: 21px; margin: 2em 0 .6em; padding: 6px 12px; border-left: 6px solid var(--accent); background: #f1f5ff; border-radius: 4px; }
.prose h3 { font-size: 18px; margin: 1.6em 0 .4em; }
.prose blockquote { margin: 1em 0; padding: 4px 16px; border-left: 4px solid var(--line); color: var(--muted); }
.prose table { border-collapse: collapse; width: 100%; font-size: 14px; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--line); padding: 6px 10px; }
.prose th { background: #f1f3f9; }
.prose code { background: #f1f3f9; padding: 1px 6px; border-radius: 4px; }

/* キャンペーン情報・レビュー情報の箱 */
.cbox, .rbox { margin-top: 18px; border-radius: var(--radius); padding: 16px 18px; }
.cbox { background: #fffbeb; border: 2px solid #fcd34d; }
.cbox.is-ended { background: #f3f4f6; border-color: #d1d5db; }
.cbox-head { font-weight: 700; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.rbox { background: #f5f3ff; border: 2px solid #ddd6fe; }
.cbox dl, .rbox dl { display: grid; grid-template-columns: 6.5em 1fr; gap: 6px 10px; margin: 10px 0; }
.cbox dt, .rbox dt { color: var(--muted); font-size: 14px; }
.cbox dd, .rbox dd { margin: 0; font-weight: 700; }
.left { margin-left: 8px; color: #dc2626; font-size: 14px; }
.btn { display: inline-block; background: var(--navy); color: #fff; text-decoration: none; border-radius: 10px; padding: 10px 18px; font-weight: 700; }
.btn:hover { background: var(--navy2); }
.small { font-size: 12px; color: var(--muted); margin: 10px 0 0; }
.share { margin-top: 28px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 14px; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }

@media (max-width: 600px) {
  body { font-size: 15px; }
  .site-head nav { margin-left: 0; }
}