/* Yohaku 公式サイト - style.css
   外部リソース不使用（システムフォントのみ） */

:root {
  --bg: #101318;
  --bg-alt: #14181f;
  --panel: #1a1f27;
  --line: #2a313b;
  --text: #e8ebf0;
  --sub: #9aa4b0;
  --accent: #FFEA00;
  --accent-soft: rgba(255, 234, 0, .12);
  --radius: 12px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Yu Gothic UI", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-text-size-adjust: 100%;
}

img, svg { vertical-align: middle; }

a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip: rect(0 0 0 0); overflow: hidden; white-space: nowrap;
}

/* ---------- ヘッダー ---------- */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(16, 19, 24, .92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; gap: 20px;
  min-height: 60px; flex-wrap: wrap; padding-top: 8px; padding-bottom: 8px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--text); text-decoration: none;
}
.brand-mark { width: 32px; height: 32px; flex: none; }
.brand-name {
  margin: 0; font-size: 1.35rem; font-weight: 700;
  letter-spacing: .04em; color: var(--text);
}
.site-nav { display: flex; gap: 4px; flex-wrap: wrap; margin-left: auto; }
.site-nav a {
  color: var(--sub); text-decoration: none;
  font-size: .92rem; padding: 6px 10px; border-radius: 8px;
}
.site-nav a:hover { color: var(--text); background: var(--panel); }
.dev-badge {
  flex: none;
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .78rem; font-weight: 700; letter-spacing: .06em;
  color: #1a1a00; background: var(--accent);
  padding: 4px 10px; border-radius: 999px;
}
.dev-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: #1a1a00; animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse { 50% { opacity: .35; } }

/* ---------- ヒーロー ---------- */
.hero {
  padding: 64px 0 56px;
  background:
    radial-gradient(ellipse 70% 50% at 50% -10%, rgba(255, 234, 0, .07), transparent),
    var(--bg);
  border-bottom: 1px solid var(--line);
}
.hero-inner { text-align: center; }
.hero-kicker {
  margin: 0 0 12px; color: var(--accent);
  font-size: .85rem; font-weight: 700; letter-spacing: .12em;
}
.hero-catch {
  margin: 0 0 18px;
  font-size: clamp(1.7rem, 4.5vw, 2.6rem);
  font-weight: 800; line-height: 1.35; letter-spacing: .02em;
}
.hero-lead {
  max-width: 640px; margin: 0 auto 28px; color: var(--sub); text-align: left;
}
.hero-actions { margin-bottom: 44px; }
.btn-disabled {
  display: inline-block;
  padding: 12px 34px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--panel);
  color: var(--sub); font-weight: 700; cursor: not-allowed;
  user-select: none;
}
.hero-price {
  margin: 12px 0 0; font-size: .88rem; color: var(--sub);
}
.hero-price strong { color: var(--accent); font-size: 1.1rem; }
.hero-price s { color: #6d7683; }

/* ---------- ボタン・ダウンロード導線 ---------- */
.btn {
  display: inline-block;
  padding: 12px 30px; border-radius: 10px;
  border: 1px solid var(--accent);
  background: var(--accent); color: #1a1a00;
  font-weight: 700; text-decoration: none;
  cursor: pointer;
}
.btn:hover { text-decoration: none; filter: brightness(1.08); }
.btn-sub {
  background: transparent; color: var(--accent);
  border: 1px solid var(--line);
}
.btn-sub:hover { border-color: var(--accent); }
.dl-buttons {
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: center;
}
.dl-note {
  margin: 16px 0 0; font-size: .84rem; color: var(--sub); line-height: 1.9;
}
.dl-legacy {
  max-width: 640px; margin: 14px auto 0;
  font-size: .8rem; color: var(--sub); line-height: 1.9;
}
.dl-legacy a { color: var(--sub); }
.dl-legacy a:hover { color: var(--accent); }
.dl-legacy-price { margin: 12px 0 0; max-width: none; }

/* 購入ボタン */
.btn-buy {
  border: none; font-size: 1.02rem; padding: 14px 30px;
}
.btn-buy:disabled {
  opacity: .55; cursor: wait;
}
.buy-error {
  margin: 14px 0 0; font-size: .86rem; color: #ffb4b4;
  background: rgba(255, 90, 90, .1); border: 1px solid rgba(255, 90, 90, .35);
  border-radius: 8px; padding: 10px 14px;
}
.buy-legal {
  margin: 12px 0 0; font-size: .78rem; color: var(--sub);
}
.buy-legal a { color: var(--sub); }
.buy-legal a:hover { color: var(--accent); }
.dl-buttons-price { margin-top: 16px; }
.dl-buttons-price .btn { font-size: .86rem; padding: 10px 22px; }
.buy-note {
  margin: 12px 0 0; font-size: .8rem; color: var(--sub);
}

/* ---------- 購入完了ページ ---------- */
.done-main { padding: 56px 0 72px; }
.done-inner { max-width: 620px; margin: 0 auto; }
.done-title {
  margin: 0 0 20px; font-size: clamp(1.4rem, 4vw, 1.9rem);
  font-weight: 800; letter-spacing: .02em;
}
.done-lead { margin: 0 0 28px; color: var(--sub); }
.done-card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px 24px;
}
.done-card h2 { margin: 0 0 6px; font-size: 1.05rem; }
.done-product { margin: 0 0 18px; font-size: .9rem; color: var(--sub); }
.done-key-label {
  font-size: .78rem; font-weight: 700; letter-spacing: .08em;
  color: var(--accent); margin: 0 0 8px;
}
.done-key-row { display: flex; gap: 8px; align-items: stretch; }
.license-key {
  flex: 1; min-width: 0;
  font-family: Consolas, "Courier New", monospace;
  font-size: 1rem; letter-spacing: .04em;
  color: var(--text); background: var(--bg-alt);
  border: 1px solid var(--line); border-radius: 8px;
  padding: 12px 14px; word-break: break-all;
  user-select: all;
}
.copy-btn {
  flex: none; padding: 0 18px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--bg-alt);
  color: var(--accent); font-weight: 700; cursor: pointer;
  font-size: .86rem;
}
.copy-btn:hover { border-color: var(--accent); }
.copy-btn:disabled { color: var(--sub); cursor: default; }
.done-note { margin: 14px 0 0; font-size: .82rem; color: var(--sub); }
.done-guide {
  margin: 22px 0 0; padding-top: 18px; border-top: 1px solid var(--line);
  font-size: .9rem; color: var(--text);
}
.done-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.done-actions .btn { font-size: .9rem; padding: 11px 22px; }
.done-mail {
  margin: 20px 0 0; font-size: .86rem; color: var(--sub);
  text-align: center;
}
.done-mail a { color: var(--sub); }

.sp-br { display: none; }

/* ---------- アプリ画面モック ---------- */
.mock {
  max-width: 860px; margin: 0 auto;
  background: var(--panel);
  border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; text-align: left;
  box-shadow: 0 18px 50px rgba(0, 0, 0, .45);
}
.mock-titlebar {
  display: flex; align-items: center; gap: 6px;
  padding: 9px 14px; background: var(--bg-alt);
  border-bottom: 1px solid var(--line);
}
.tb-dot { width: 10px; height: 10px; border-radius: 50%; background: #3a424d; }
.tb-dot:first-child { background: #474f26; }
.tb-title { margin-left: 8px; font-size: .78rem; color: var(--sub); letter-spacing: .05em; }
.tb-badge {
  margin-left: auto; font-size: .68rem; font-weight: 700;
  color: var(--accent); background: var(--accent-soft);
  padding: 2px 8px; border-radius: 999px;
}
.mock-body {
  display: grid; grid-template-columns: 168px 1fr 218px;
  gap: 14px; padding: 14px;
}
.mock-side {
  display: flex; flex-direction: column; gap: 4px;
  padding: 10px; background: var(--bg-alt);
  border: 1px solid var(--line); border-radius: 8px;
  font-size: .8rem; color: var(--sub);
}
.side-item {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 8px; border-radius: 6px; white-space: nowrap;
}
.side-item.is-active {
  background: var(--accent-soft); color: var(--text); font-weight: 700;
}
.ico-dot { width: 10px; height: 10px; border-radius: 3px; flex: none; background: var(--accent); }
.ico-b { background: #7fc7ff; } .ico-c { background: #ff9d6b; }
.ico-d { background: #9d8cff; } .ico-e { background: #6ee7b7; }
.ico-f { background: #8b93a1; }

.mock-list {
  display: flex; flex-direction: column; gap: 8px; justify-content: center;
  min-width: 0;
}
.list-row {
  display: grid; grid-template-columns: minmax(88px, 34%) 1fr 62px;
  align-items: center; gap: 10px;
  padding: 9px 12px; background: var(--bg-alt);
  border: 1px solid var(--line); border-radius: 8px;
  font-size: .8rem;
}
.row-name { color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row-bar { height: 8px; border-radius: 4px; background: #262d37; overflow: hidden; }
.row-bar i { display: block; height: 100%; background: var(--accent); border-radius: 4px; }
.row-bar-sys i { background: #8b93a1; }
.row-size { color: var(--sub); text-align: right; font-variant-numeric: tabular-nums; }

.mock-chart {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  padding: 12px; background: var(--bg-alt);
  border: 1px solid var(--line); border-radius: 8px;
}
.donut {
  width: 118px; height: 118px; border-radius: 50%;
  background: conic-gradient(var(--accent) 0 41%, #7fc7ff 41% 59%, #6ee7b7 59% 67%, #343b46 67% 100%);
  display: grid; place-items: center; flex: none;
}
.donut-hole {
  width: 68px; height: 68px; border-radius: 50%;
  background: var(--bg-alt); display: grid; place-items: center;
  font-size: .78rem; font-weight: 700; color: var(--text);
}
.donut-legend {
  display: flex; flex-direction: column; gap: 5px;
  font-size: .72rem; color: var(--sub); white-space: nowrap;
}
.donut-legend span { display: flex; align-items: center; gap: 6px; }
.lg { width: 9px; height: 9px; border-radius: 2px; flex: none; }
.lg-a { background: var(--accent); } .lg-b { background: #7fc7ff; }
.lg-c { background: #6ee7b7; } .lg-d { background: #343b46; }

.mock-caption { margin: 14px 0 0; font-size: .78rem; color: var(--sub); }

/* ---------- 共通セクション ---------- */
.section { padding: 64px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-title {
  margin: 0 0 28px; font-size: clamp(1.3rem, 3vw, 1.7rem);
  font-weight: 800; letter-spacing: .02em;
}
.section-title::after {
  content: ""; display: block; width: 44px; height: 4px;
  margin-top: 10px; border-radius: 2px; background: var(--accent);
}
.section-note { color: var(--sub); font-size: .92rem; margin: -16px 0 28px; }
.section-note strong { color: var(--text); }

/* ---------- 特徴カード ---------- */
.cards {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}
.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px 20px;
}
.card-ico { width: 30px; height: 30px; color: var(--accent); margin-bottom: 12px; }
.card h3 { margin: 0 0 8px; font-size: 1.02rem; }
.card p { margin: 0; color: var(--sub); font-size: .9rem; }
.policy-list {
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: center;
  margin: 30px 0 0; padding: 0; list-style: none;
}
.policy-list li {
  font-size: .84rem; color: var(--sub);
  border: 1px solid var(--line); background: var(--panel);
  padding: 7px 16px; border-radius: 999px;
}

/* ---------- スクリーンショット ---------- */
.shot { margin: 0; }
.shot-img {
  width: 100%; height: auto; display: block;
  border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: 0 18px 50px rgba(0, 0, 0, .45);
}
.shot figcaption { margin-top: 10px; font-size: .84rem; color: var(--sub); text-align: center; }

/* ---------- 比較表 ---------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { padding: 13px 16px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
thead th { background: var(--panel); font-size: .85rem; letter-spacing: .04em; }
tbody th { background: var(--bg-alt); color: var(--sub); font-weight: 600; white-space: nowrap; }
td.em { color: var(--text); }
td.em::before {
  content: "●"; color: var(--accent); font-size: .6em;
  margin-right: 8px; vertical-align: 2px;
}

/* ---------- 価格 ---------- */
.price-card {
  max-width: 520px; margin: 0 auto; padding: 30px 26px 28px;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); text-align: center;
  box-shadow: inset 0 0 0 1px var(--accent-soft);
}
.price-badge {
  display: inline-block; margin: 0 0 14px; padding: 4px 14px;
  font-size: .76rem; font-weight: 700; letter-spacing: .06em;
  color: #1a1a00; background: var(--accent); border-radius: 999px;
}
.price-main {
  margin: 0; font-size: clamp(2.4rem, 7vw, 3.1rem);
  font-weight: 800; line-height: 1.1; color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.price-tax { margin-left: 6px; font-size: .82rem; font-weight: 600; color: var(--sub); }
.price-list { margin: 8px 0 0; font-size: .92rem; color: var(--sub); }
.price-list s { color: #6d7683; }
.price-term {
  margin: 18px 0 0; padding-top: 16px;
  border-top: 1px solid var(--line); font-size: .86rem; color: var(--text);
}
.price-facts {
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center;
  margin: 16px 0 22px; padding: 0; list-style: none;
}
.price-facts li {
  font-size: .8rem; color: var(--sub);
  border: 1px solid var(--line); background: var(--bg-alt);
  padding: 5px 12px; border-radius: 999px;
}
.price-card .btn-disabled { padding: 12px 28px; }
.price-note { margin: 18px 0 0; font-size: .8rem; color: var(--sub); text-align: center; }

/* ---------- 動作環境 ---------- */
.req-list { margin: 0 0 20px; padding: 0; list-style: none; }
.req-list li {
  padding: 13px 18px; border: 1px solid var(--line);
  border-radius: 8px; background: var(--panel); margin-bottom: 10px;
  max-width: 560px;
}

/* ---------- FAQ ---------- */
.faq { max-width: 760px; }
.faq details {
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--panel); margin-bottom: 10px;
}
.faq summary {
  cursor: pointer; padding: 15px 18px;
  font-weight: 700; list-style: none; position: relative; padding-right: 44px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: 18px; top: 50%;
  width: 9px; height: 9px; margin-top: -7px;
  border-right: 2px solid var(--accent); border-bottom: 2px solid var(--accent);
  transform: rotate(45deg); transition: transform .15s ease;
}
.faq details[open] summary::after { transform: rotate(225deg); margin-top: -4px; }
.faq details p { margin: 0; padding: 0 18px 16px; color: var(--sub); font-size: .93rem; }

/* ---------- 法務ページ ---------- */
.legal-main { padding: 48px 0 64px; }
.legal-inner { max-width: 760px; margin: 0 auto; }
.legal-title {
  margin: 0 0 8px; font-size: clamp(1.4rem, 4vw, 1.9rem);
  font-weight: 800; letter-spacing: .02em;
}
.legal-meta { margin: 0 0 30px; font-size: .84rem; color: var(--sub); }
.legal-body h2 {
  margin: 34px 0 10px; font-size: 1.1rem; font-weight: 800;
  padding-left: 10px; border-left: 4px solid var(--accent);
}
.legal-body h3 {
  margin: 22px 0 8px; font-size: .98rem; font-weight: 700;
  color: var(--text);
}
.legal-body p {
  margin: 0 0 10px; font-size: .92rem; color: var(--text);
  line-height: 1.9; overflow-wrap: anywhere;
}
.legal-body .law-item {
  margin: 0 0 8px; padding-left: 1.2em; text-indent: -1.2em;
}
.legal-body a { overflow-wrap: anywhere; }
.legal-body dl {
  margin: 0; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden;
}
.legal-body dt {
  padding: 11px 16px 4px; font-size: .8rem; font-weight: 700;
  letter-spacing: .05em; color: var(--accent); background: var(--bg-alt);
}
.legal-body dd {
  margin: 0; padding: 4px 16px 12px; font-size: .92rem; color: var(--text);
  line-height: 1.85; border-bottom: 1px solid var(--line);
  overflow-wrap: anywhere;
}
.legal-body dd:last-child { border-bottom: none; }
.legal-footer {
  border-top: 1px solid var(--line); background: var(--bg-alt);
  padding: 30px 0; text-align: center;
}

/* ---------- フッター ---------- */
.site-footer {
  border-top: 1px solid var(--line); background: var(--bg-alt);
  padding: 34px 0; text-align: center;
}
.footer-inner { display: grid; gap: 10px; justify-items: center; }
.footer-dev { margin: 0; color: var(--sub); font-size: .9rem; }
.footer-links { display: flex; gap: 18px; margin: 0; padding: 0; list-style: none; flex-wrap: wrap; justify-content: center; }
.footer-links a { color: var(--sub); font-size: .9rem; text-decoration: none; overflow-wrap: anywhere; }
.footer-links a:hover { color: var(--accent); text-decoration: underline; }
.copyright { margin: 6px 0 0; color: #6d7683; font-size: .78rem; }

/* ---------- レスポンシブ ---------- */
@media (max-width: 900px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .sp-br { display: inline; }
  .hero { padding: 44px 0 44px; }
  .hero-lead { text-align: left; }
  .section { padding: 44px 0; }
  .container { padding: 0 18px; }

  .header-inner { gap: 10px; }
  .site-nav { margin-left: 0; order: 3; width: 100%; justify-content: flex-start; gap: 2px; }
  .site-nav a { padding: 5px 8px; font-size: .84rem; }
  .dev-badge { margin-left: auto; }

  .mock-body { grid-template-columns: 1fr; }
  .mock-side { flex-direction: row; flex-wrap: wrap; gap: 2px; padding: 6px; }
  .side-item { font-size: .74rem; padding: 4px 8px; }
  .mock-chart { flex-direction: row; justify-content: center; }
  .donut-legend { white-space: normal; }

  .cards { grid-template-columns: 1fr; }
  .policy-list { justify-content: flex-start; }

  th, td { padding: 10px 10px; font-size: .86rem; }
}