/* ============================================
   Mikan Works — 共通スタイル
   ============================================ */

:root {
  --ink: #1b1e23;
  --sub: #5d636d;
  --paper: #ffffff;
  --alt: #f5f6f8;
  --line: #e2e5ea;
  --accent: #3f4bb8;
  --accent-dark: #333d99;

  --sans: -apple-system, "Hiragino Kaku Gothic ProN", "Noto Sans JP",
          "Yu Gothic Medium", "Meiryo", sans-serif;
  --mono: ui-monospace, "SF Mono", "Roboto Mono", monospace;

  --radius: 10px;
  --max: 960px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.5; margin: 0; font-weight: 700; }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

main {
	min-height: 100vh;
}

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

.wrap-narrow { max-width: 680px; }

.meta, .note {
  font-size: 13px;
  color: var(--sub);
  line-height: 1.8;
}

.note a { text-decoration: underline; }

/* ---------- ヘッダー ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}

.brand:hover { text-decoration: none; }

.brand-mark {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
}

.brand-name { font-weight: 700; letter-spacing: 0.01em; }

.nav {
  display: flex;
  gap: 24px;
  font-size: 14px;
}

.nav a { color: var(--sub); }
.nav a:hover { color: var(--ink); text-decoration: none; }
.nav a[aria-current="page"] { color: var(--ink); }

.nav-toggle {
  display: none;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: none;
  color: var(--ink);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
}

/* ---------- ヒーロー ---------- */

.hero {
  padding: 88px 0 72px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sub);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(28px, 5.4vw, 42px);
  letter-spacing: -0.01em;
  margin-bottom: 24px;
}

.lead {
  max-width: 620px;
  color: var(--sub);
  font-size: 15px;
}

/* ---------- セクション ---------- */

.section { padding: 72px 0; }

.section-alt {
  background: var(--alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-title {
  font-size: 13px;
  font-family: var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sub);
  padding-bottom: 14px;
  margin-bottom: 36px;
  border-bottom: 1px solid var(--line);
}

/* ---------- ボタン ---------- */

.btn {
  display: inline-block;
  padding: 11px 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.4;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.btn:hover {
  border-color: var(--ink);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }

/* ---------- アプリ一覧 ---------- */

.app-list {
  display: grid;
  gap: 40px;
}

.app {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 24px;
  align-items: start;
}

.app-icon {
  display: grid;
  place-items: center;
  width: 68px;
  height: 68px;
  border-radius: 18px;
  background: var(--accent);
  color: #fff;
  font-size: 26px;
  font-weight: 700;
}

img.app-icon { object-fit: cover; }
img.brand-mark { object-fit: cover; }

.app-body h3 { font-size: 19px; margin-bottom: 8px; }
.app-body p { font-size: 15px; color: var(--sub); }
.app-body .btn { margin-top: 6px; }

/* ---------- お知らせ ---------- */

.news-list {
  display: grid;
  gap: 28px;
}

.news-list li {
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.news-list li:last-child { border-bottom: none; padding-bottom: 0; }

.news-date {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--sub);
}

.tag {
  padding: 2px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.news-list h3 { font-size: 17px; margin-bottom: 6px; }
.news-list p:last-child { margin-bottom: 0; font-size: 15px; color: var(--sub); }

/* ---------- ドキュメントページ ---------- */

.doc h1 {
  font-size: clamp(24px, 4.5vw, 32px);
  margin-bottom: 10px;
}

.doc > .wrap > .meta { margin-bottom: 40px; }

.doc h2 {
  font-size: 17px;
  margin: 44px 0 12px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.doc h3 {
  font-size: 15px;
  margin: 24px 0 8px;
}

.doc p, .doc li { font-size: 15px; }

.doc ul {
  margin: 0 0 1em;
  padding-left: 1.3em;
  list-style: disc;
}

.doc li { margin-bottom: 6px; }

/* ---------- フッター ---------- */

.site-footer {
  padding: 32px 0;
  border-top: 1px solid var(--line);
  background: var(--alt);
  font-size: 13px;
  color: var(--sub);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
  justify-content: space-between;
}

.footer-inner p { margin: 0; }

.footer-nav {
  display: flex;
  gap: 20px;
}

/* ---------- レスポンシブ ---------- */

@media (max-width: 720px) {
  .nav-toggle { display: block; }

  .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 0;
    padding-bottom: 8px;
  }

  .nav.is-open { display: flex; }

  .nav a {
    padding: 12px 2px;
    border-top: 1px solid var(--line);
  }

  .hero { padding: 56px 0 48px; }
  .section { padding: 56px 0; }

  .app {
    grid-template-columns: 56px 1fr;
    gap: 18px;
  }

  .app-icon { width: 56px; height: 56px; border-radius: 15px; font-size: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}