/* Stocklamp サポート／プライバシーポリシー 共通スタイル。
   依存なしの静的CSS。外部フォント・画像・JSは使用しない。 */

:root {
  --color-bg: #f2f2f7;
  --color-surface: #ffffff;
  --color-text: #1c1c1e;
  --color-text-secondary: #6b6b70;
  --color-border: #e2e2e6;
  --color-accent: #ff9500;
  --color-accent-dark: #c96f00;
  --radius: 16px;
  --max-width: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0d0d0f;
    --color-surface: #1c1c1e;
    --color-text: #f2f2f4;
    --color-text-secondary: #a7a7ac;
    --color-border: #3a3a3d;
    --color-accent: #ff9f0a;
    --color-accent-dark: #ffb340;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Yu Gothic", "Noto Sans JP", system-ui, sans-serif;
  line-height: 1.9;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 20px 64px;
}

header.top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}

.app-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(160deg, var(--color-accent), var(--color-accent-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 22px;
  flex-shrink: 0;
}

.app-title {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin: 0 0 2px;
}

h1 {
  font-size: 28px;
  line-height: 1.4;
  margin: 0;
}

h2 {
  font-size: 20px;
  margin: 40px 0 12px;
  padding-top: 8px;
  border-top: 1px solid var(--color-border);
}

h2:first-of-type {
  border-top: none;
  padding-top: 0;
  margin-top: 32px;
}

h3 {
  font-size: 17px;
  margin: 20px 0 8px;
}

p {
  margin: 0 0 16px;
}

ul, ol {
  margin: 0 0 16px;
  padding-left: 1.4em;
}

li {
  margin-bottom: 8px;
}

a {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover {
  opacity: 0.8;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin-bottom: 16px;
}

.lede {
  font-size: 17px;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0;
}

.nav-links a.button,
a.button {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: 12px 20px;
  border-radius: 999px;
}

.nav-links a.button:hover,
a.button:hover {
  opacity: 0.9;
}

.button.secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.faq-item {
  margin-bottom: 22px;
}

.faq-q {
  font-weight: 600;
  margin: 0 0 6px;
}

.faq-q::before {
  content: "Q. ";
  color: var(--color-accent-dark);
}

.faq-a {
  margin: 0;
  color: var(--color-text);
}

.faq-a::before {
  content: "A. ";
  color: var(--color-text-secondary);
}

footer.page-footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  font-size: 13px;
  color: var(--color-text-secondary);
}

footer.page-footer nav {
  display: flex;
  gap: 16px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.updated {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin: 4px 0 0;
}

.section-list {
  padding-left: 0;
  list-style: none;
}

.section-list li {
  margin-bottom: 4px;
}

.section-list a {
  text-decoration: none;
}

.section-list a:hover {
  text-decoration: underline;
}

.landing {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.landing .page {
  text-align: center;
  padding-top: 0;
  padding-bottom: 0;
}

.landing header.top {
  justify-content: center;
  flex-direction: column;
}

.landing .nav-links {
  justify-content: center;
}

@media (max-width: 480px) {
  h1 {
    font-size: 24px;
  }
  .page {
    padding: 24px 16px 48px;
  }
}