body {
    font-family: var(--ff);
    line-height: 1.7;
    color: var(--text);
    background: var(--bg1);
    -webkit-font-smoothing: antialiased;
}

.container { max-width: 760px; margin: 0 auto; padding: 0 24px; }

.nav-back {
    font-family: var(--fm); font-size: 0.7rem; font-weight: 300;
    letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--text3); text-decoration: none; transition: color 0.18s;
}
.nav-back:hover { color: var(--cyan); }

.page-header {
    background: linear-gradient(160deg, var(--bg0) 0%, var(--bg3) 100%);
    padding: 3.5rem 0 2.5rem;
    border-bottom: 1px solid var(--border);
}
.page-header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    color: #f4f8fc;
    margin-bottom: 0.5rem;
}
.page-header .meta {
    font-family: var(--fm); font-size: 0.72rem; letter-spacing: 0.06em; color: var(--text3);
}

.content { padding: 3rem 0 4rem; }

h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #f0f4f8;
    margin: 2.5rem 0 0.75rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
}
h2:first-child { border-top: none; margin-top: 0; }

p { color: var(--text2); margin-bottom: 1rem; font-size: 0.97rem; }

ul, ol {
    color: var(--text2);
    margin: 0 0 1rem 1.5rem;
    font-size: 0.97rem;
}
li { margin-bottom: 0.4rem; }

a { color: var(--cyan); }

.highlight-box {
    background: rgba(34,211,238,0.06);
    border: 1px solid rgba(34,211,238,0.18);
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
}
.highlight-box p { color: #93c5fd; margin: 0; font-size: 0.92rem; }
.highlight-box strong { color: #e0f2fe; }

footer {
    background: var(--bg0);
    border-top: 1px solid var(--border);
    padding: 1.75rem 0;
    text-align: center;
}
footer p { font-family: var(--fm); font-size: 0.68rem; letter-spacing: 0.05em; color: var(--text3); }
footer a { color: var(--text3); text-decoration: none; transition: color 0.18s; }
footer a:hover { color: var(--cyan); }