/* Base partilhada — estilo simples (sem fontes externas) */
:root {
    --bg: #ffffff;
    --paper: #fafafa;
    --text: #1a1a1a;
    --muted: #555;
    --line: #ddd;
    --link: #0d47a1;
    --max: 42rem;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.simple-ad {
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    text-align: center;
    font-size: 0.75rem;
    padding: 0.5rem 0.75rem;
    line-height: 1.45;
}
.simple-ad strong { color: var(--text); font-weight: 600; }
.simple-ad a { color: var(--link); }
.simple-wrap {
    width: 100%;
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 1.25rem;
    flex: 1;
}
.simple-top {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    padding: 1.25rem 0 1.5rem;
    border-bottom: 1px solid var(--line);
}
.simple-logo {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    text-decoration: none;
}
.simple-logo span { color: var(--link); font-weight: 600; }
.simple-nav { display: flex; flex-wrap: wrap; gap: 0.65rem 1rem; }
.simple-nav a {
    font-size: 0.875rem;
    color: var(--link);
    text-decoration: none;
}
.simple-nav a:hover { text-decoration: underline; }
.simple-btn {
    display: inline-block;
    padding: 0.55rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    border: 1px solid var(--text);
    background: var(--text);
    color: #fff;
}
.simple-btn:hover { opacity: 0.92; }
.simple-btn--line {
    background: transparent;
    color: var(--text);
    border-color: var(--line);
}
.simple-btn--line:hover { border-color: var(--text); opacity: 1; }
.simple-back {
    display: inline-block;
    margin-top: 1.5rem;
    font-size: 0.875rem;
    color: var(--link);
    text-decoration: none;
}
.simple-back:hover { text-decoration: underline; }
main.simple-main { padding-bottom: 2.5rem; }