@font-face {
  font-family: 'LTL Evidence Sans';
  src: url('LTLEvidenceSans.woff2') format('woff2'),
       url('LTLEvidenceSans.ttf') format('truetype');
  font-display: swap;
}

:root {
  --paper: #fbfaf7;
  --ink: #25313d;
  --ink-soft: #56636f;
  --rule: #dfe3e6;
  --teal: #247377;
  --teal-deep: #1b5a5d;
  --shu: #c0392f;          /* 朱肉 */
  --card: #ffffff;
  --max: 820px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'Zen Kaku Gothic New', 'Hiragino Kaku Gothic ProN', sans-serif;
  font-size: 15.5px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 22px; }
a { color: var(--teal-deep); }

/* ---------- ヘッダ ---------- */
header {
  background: var(--ink);
  color: #fff;
  border-bottom: 3px solid var(--teal);
}
.brand {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 0;
}
.brand img { width: 42px; height: 42px; border-radius: 6px; }
.brand .name { font-weight: 700; font-size: 1.02rem; letter-spacing: .02em; }
.brand .tag  { font-size: .72rem; color: #b8c4cd; letter-spacing: .04em; }
.brand a { color: #fff; text-decoration: none; display: flex; align-items: center; gap: 14px; }

/* ---------- パンくず ---------- */
.crumb { font-size: .76rem; color: var(--ink-soft); padding: 14px 0 0; }
.crumb a { color: var(--teal-deep); text-decoration: none; }
.crumb a:hover { text-decoration: underline; }

/* ---------- ヒーロー ---------- */
.hero { padding: 56px 0 36px; border-bottom: 1px solid var(--rule); }
.hero h1 {
  font-family: 'Shippori Mincho', serif;
  font-weight: 700;
  font-size: clamp(1.6rem, 4.4vw, 2.35rem);
  line-height: 1.5;
  letter-spacing: .02em;
}
.hero p.lead { margin-top: 18px; max-width: 40em; color: var(--ink-soft); }
.eligibility {
  display: inline-block; margin-top: 22px;
  font-size: .78rem; font-weight: 500;
  color: var(--teal-deep);
  border: 1px solid var(--teal);
  border-radius: 3px;
  padding: 4px 12px;
  background: #fff;
}

/* ---------- 製品一覧（カタログ） ---------- */
.catalog { padding: 44px 0 8px; }
.catalog-head {
  display: flex; align-items: baseline; justify-content: space-between;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 8px;
}
.catalog-head h2 {
  font-family: 'Shippori Mincho', serif;
  font-size: 1.22rem; font-weight: 700; letter-spacing: .06em;
}
.catalog-head .note { font-size: .72rem; color: var(--ink-soft); }

.product {
  display: grid;
  grid-template-columns: 96px 1fr auto;
  gap: 20px;
  align-items: start;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 24px 26px;
  margin-top: 20px;
}
.product h3 { font-size: 1.06rem; letter-spacing: .02em; }
.product .desc { margin-top: 8px; color: var(--ink-soft); font-size: .92rem; }
.product .platform { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 6px 8px; }
.product .platform span {
  font-size: .68rem; color: var(--ink-soft);
  border: 1px solid var(--rule); border-radius: 3px; padding: 2px 8px;
}
.product .buy { text-align: right; min-width: 150px; }
.product .price { font-family: 'IBM Plex Mono', monospace; font-weight: 500; font-size: 1.12rem; }
.product .price small { font-size: .62rem; color: var(--ink-soft); }

/* 朱スタンプ */
.stamp {
  font-family: 'LTL Evidence Sans', 'Zen Kaku Gothic New', sans-serif;
  color: var(--shu);
  border: 2.5px solid var(--shu);
  border-radius: 4px;
  width: 88px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.12rem; letter-spacing: .05em;
  transform: rotate(-3deg);
  opacity: .92;
  background: radial-gradient(circle at 30% 40%, rgba(192,57,47,.06), transparent 60%);
}
.stamp.lg { width: 108px; height: 64px; font-size: 1.4rem; }

@media (prefers-reduced-motion: no-preference) {
  .stamp { animation: press .5s cubic-bezier(.2,1.6,.4,1) backwards; }
  .product:nth-of-type(1) .stamp { animation-delay: .10s; }
  .product:nth-of-type(2) .stamp { animation-delay: .22s; }
  .product:nth-of-type(3) .stamp { animation-delay: .34s; }
  .product:nth-of-type(4) .stamp { animation-delay: .46s; }
  @keyframes press {
    from { opacity: 0; transform: rotate(-3deg) scale(1.5); }
    to   { opacity: .92; transform: rotate(-3deg) scale(1); }
  }
}

/* ---------- ボタン ---------- */
.btn {
  display: inline-block;
  font-family: inherit; font-size: .92rem; font-weight: 500;
  text-decoration: none; cursor: pointer;
  border: 1px solid var(--teal); border-radius: 4px;
  padding: 9px 18px;
  background: var(--teal); color: #fff;
  transition: background .15s;
}
.btn:hover { background: var(--teal-deep); }
.btn.secondary { background: #fff; color: var(--teal-deep); }
.btn.secondary:hover { background: #f0f6f6; }
.trial-link { display: inline-block; margin-top: 8px; font-size: .8rem; color: var(--teal-deep); }
.soon { display: inline-block; font-size: .78rem; color: var(--ink-soft); border: 1px dashed var(--rule); border-radius: 3px; padding: 4px 12px; }
a.morelink { display: inline-block; margin-top: 12px; font-size: .84rem; font-weight: 500; text-decoration: none; }
a.morelink::after { content: " →"; }

/* ---------- 製品ページ本文 ---------- */
.article { padding: 40px 0 8px; }
.article p { margin: 0 0 1.1em; }
.article .intro { font-size: 1.02rem; }
.article h2 {
  font-size: 1.06rem; font-weight: 700; letter-spacing: .02em;
  line-height: 1.5;
  margin: 30px 0 8px;
  padding-left: 12px;
  border-left: 4px solid var(--teal);
}
.article h2 + p { margin-top: 0; }
.article .section-title {
  font-family: 'Shippori Mincho', serif;
  font-size: 1.18rem; letter-spacing: .05em;
  border-left: none; padding-left: 0;
  border-bottom: 2px solid var(--ink); padding-bottom: 6px;
  margin: 38px 0 18px;
}
.article hr { border: 0; border-top: 1px solid var(--rule); margin: 30px 0; }
.spec {
  background: var(--card); border: 1px solid var(--rule); border-radius: 6px;
  padding: 20px 24px; margin: 8px 0 4px;
}
.spec dl { display: grid; grid-template-columns: 8em 1fr; gap: 8px 16px; font-size: .9rem; }
.spec dt { color: var(--ink-soft); }
.spec dd { font-family: 'IBM Plex Mono', monospace; }

/* 購入ブロック */
.purchase {
  background: #fff; border: 1px solid var(--teal); border-radius: 6px;
  padding: 24px 26px; margin: 20px 0;
}
.purchase .price { font-family: 'IBM Plex Mono', monospace; font-size: 1.5rem; font-weight: 500; }
.purchase .price small { font-size: .66rem; color: var(--ink-soft); }
.purchase .env { font-size: .8rem; color: var(--ink-soft); margin: 4px 0 16px; }
.purchase .actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* FAQ */
.faq details {
  border-bottom: 1px solid var(--rule); padding: 12px 0;
}
.faq summary {
  cursor: pointer; font-weight: 500; list-style: none;
  display: flex; justify-content: space-between; gap: 12px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "＋"; color: var(--teal); }
.faq details[open] summary::after { content: "－"; }
.faq details p { margin-top: 10px; color: var(--ink-soft); font-size: .92rem; }

/* ---------- 方針セクション ---------- */
.policy { padding: 30px 0; }
.policy h2 {
  font-family: 'Shippori Mincho', serif;
  font-size: 1.12rem; font-weight: 700; letter-spacing: .04em; margin-bottom: 14px;
}
.policy p { margin-bottom: 1em; color: var(--ink-soft); }
.policy strong { color: var(--ink); }
.terms-note {
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  padding: 22px 0; margin: 20px 0; font-size: .86rem; color: var(--ink-soft);
}
.terms-note h2 { font-size: .95rem; color: var(--ink); margin-bottom: 10px; letter-spacing: .04em; }

/* ---------- フッター ---------- */
footer {
  background: var(--ink); color: #b8c4cd;
  font-size: .76rem; padding: 28px 0 40px; margin-top: 40px;
}
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 28px; justify-content: space-between; }
footer a { color: #d8e2e8; }

/* ---------- 資格ゲート（モーダル） ---------- */
.gate-overlay {
  position: fixed; inset: 0; background: rgba(37,49,61,.55);
  display: none; align-items: center; justify-content: center; padding: 20px; z-index: 50;
}
.gate-overlay.open { display: flex; }
.gate {
  background: #fff; border-radius: 8px; max-width: 460px; width: 100%;
  padding: 28px 28px 24px; box-shadow: 0 12px 40px rgba(0,0,0,.25);
}
.gate h3 { font-family: 'Shippori Mincho', serif; font-size: 1.08rem; margin-bottom: 6px; }
.gate .lead { font-size: .86rem; color: var(--ink-soft); margin-bottom: 16px; }
.gate label {
  display: flex; gap: 10px; align-items: flex-start;
  font-size: .9rem; padding: 10px 0; cursor: pointer;
}
.gate label input { margin-top: 5px; width: 16px; height: 16px; flex: none; accent-color: var(--teal); }
.gate .note-legal { font-size: .74rem; color: var(--ink-soft); background: #f6f4ef; border-radius: 4px; padding: 9px 11px; margin: 8px 0 4px; line-height: 1.7; }
.gate .dest { font-size: .76rem; color: var(--ink-soft); margin: 10px 0 16px; word-break: break-all; }
.gate .gate-actions { display: flex; gap: 10px; justify-content: flex-end; align-items: center; }
.gate .btn[aria-disabled="true"] { opacity: .45; cursor: not-allowed; background: var(--ink-soft); border-color: var(--ink-soft); }
.gate .cancel { background: none; border: none; color: var(--ink-soft); cursor: pointer; font: inherit; font-size: .86rem; }

@media (max-width: 640px) {
  .product { grid-template-columns: 1fr; }
  .product .buy { text-align: left; }
  .spec dl { grid-template-columns: 1fr; gap: 2px 0; }
  .spec dd { margin-bottom: 8px; }
}
a:focus-visible, .btn:focus-visible, summary:focus-visible { outline: 3px solid var(--teal); outline-offset: 2px; }