:root {
  --ink: #12172b;
  --ink-soft: #4b5268;
  --bg: #f6f7fb;
  --card: #ffffff;
  --border: #e6e8f0;
  --accent-a: #4f46e5;
  --accent-b: #06b6d4;
  --accent-soft: #eef0ff;
  --radius: 16px;
  --shadow: 0 8px 30px rgba(18, 23, 43, 0.06);
  --max-width: 1080px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Hiragino Sans", "Noto Sans JP", "PingFang SC", "PingFang TC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

.wrap-narrow {
  max-width: 760px;
}

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

h1, h2, h3 { line-height: 1.35; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); margin: 0.2em 0 0.4em; }
h2 { font-size: 1.5rem; margin: 0 0 0.6em; }
h3 { font-size: 1.1rem; margin: 0 0 0.4em; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--ink);
}
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
  display: inline-block;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.site-nav > a {
  color: var(--ink-soft);
  font-size: 0.95rem;
  font-weight: 600;
}
.site-nav > a.active { color: var(--accent-a); }
.lang-switch {
  display: flex;
  gap: 4px;
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 4px;
}
.lang-switch a {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink-soft);
  padding: 6px 10px;
  border-radius: 999px;
}
.lang-switch a:hover { text-decoration: none; background: rgba(255,255,255,0.7); }
/* Twinin のページ：アプリ本体の対応言語に合わせた8言語ぶんの切替 */
.lang-switch-wide {
  flex-wrap: wrap;
  row-gap: 2px;
  max-width: 100%;
}
.lang-switch-wide a { padding: 5px 9px; }

.lang-switch a.active {
  background: #fff;
  color: var(--accent-a);
  box-shadow: 0 2px 8px rgba(79,70,229,0.18);
}

/* Hero */
.hero {
  padding: 64px 0 40px;
}
.hub-hero { text-align: center; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-a);
  margin: 0 0 10px;
}
.lead {
  font-size: 1.2rem;
  color: var(--ink-soft);
  max-width: 640px;
}
.hub-hero .lead { margin: 0 auto; }

.app-hero-inner {
  display: flex;
  gap: 32px;
  align-items: flex-start;
}
.app-hero-icon img {
  border-radius: 22px;
  box-shadow: var(--shadow);
  display: block;
}
.hero-desc { color: var(--ink-soft); max-width: 640px; }
.hero-note {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent-a);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 999px;
  margin: 6px 0 18px;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
}
.btn-secondary {
  background: #fff;
  border: 1px solid var(--border);
  color: var(--ink);
  box-shadow: var(--shadow);
}
.btn-secondary:hover { text-decoration: none; border-color: var(--accent-a); color: var(--accent-a); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
  color: #fff;
  border: 1px solid transparent;
  box-shadow: 0 8px 20px rgba(79, 70, 229, 0.28);
}
.btn-primary:hover { text-decoration: none; filter: brightness(1.06); }
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin: 6px 0 0;
}

/* App grid on hub */
.app-grid-section { padding: 20px 0 80px; }
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.app-card {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  color: var(--ink);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.app-card:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(18,23,43,0.10); text-decoration: none; }
.app-card-icon img { border-radius: 16px; display: block; }
.app-card-kicker {
  text-transform: uppercase;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent-b);
  margin: 0 0 6px;
}
.app-card-body p { color: var(--ink-soft); margin: 0 0 10px; }
.app-card-cta { font-weight: 700; color: var(--accent-a); }
.app-card-placeholder {
  border-style: dashed;
  box-shadow: none;
  color: var(--ink-soft);
}
.app-card-placeholder:hover { transform: none; box-shadow: none; }

/* Sections */
.section { padding: 20px 0 64px; }
.section-alt { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-title { text-align: left; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}
.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}
.feature-card p { color: var(--ink-soft); margin: 0; }

.pricing-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}
.pricing-list li {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 18px;
  color: var(--ink-soft);
}

.breadcrumb {
  max-width: var(--max-width);
  margin: 20px auto 0;
  padding: 0 24px;
  font-size: 0.9rem;
}

/* Privacy */
.policy-hero { padding-top: 48px; padding-bottom: 20px; }
.app-name-tag {
  display: inline-block;
  font-weight: 700;
  color: var(--accent-a);
  background: var(--accent-soft);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
}
.updated { color: var(--ink-soft); font-size: 0.9rem; }
.policy-body { padding-top: 0; }
.policy-intro { color: var(--ink-soft); }
.policy-section { margin-top: 30px; }
.policy-section p { color: var(--ink-soft); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  color: var(--ink-soft);
  font-size: 0.85rem;
}

@media (max-width: 640px) {
  .app-hero-inner { flex-direction: column; }
  .header-inner { flex-direction: column; align-items: flex-start; gap: 10px; }
}

/* MosaiClip：AI 編集セクション（2026-09-26 追加） */
.section-lead { color: var(--ink-soft); max-width: 760px; margin: 0 0 24px; }
.section-note { color: var(--ink-soft); font-size: 0.85rem; margin: 20px 0 0; }
p + .pricing-list { margin-top: 12px; }
.pricing-list + .btn { margin-top: 20px; }
/* 韓国語は語の途中で改行しない */
html[lang="ko"] body { word-break: keep-all; overflow-wrap: anywhere; }

/* アプリのアイコンと名前から App Store へ（カードのほかの部分は紹介ページへ） */
.app-card-linked { position: relative; }
.app-card-linked .app-card-stretch { text-decoration: none; }
.app-card-linked .app-card-stretch::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
}
.app-card-store {
  position: relative;
  z-index: 1;
  color: inherit;
  text-decoration: none;
}
.app-card-icon .app-card-store { display: block; }
h2 .app-card-store:hover { color: var(--accent-a); text-decoration: underline; }
.app-hero-store { color: inherit; text-decoration: none; }
.app-hero-icon .app-hero-store { display: block; transition: opacity 0.15s ease; }
.app-hero-store:hover { opacity: 0.85; text-decoration: none; }
h1 .app-hero-store:hover { opacity: 1; color: var(--accent-a); }