/* ================================
   布局样式
   ================================ */

/* 纸张纹理 */
.paper-texture {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
    opacity: 0.6;
}

/* 主布局 */
.app-wrapper {
    width: 100%;
    max-width: 1240px;
    display: flex;
    min-height: 100vh;
    position: relative;
    background: linear-gradient(to right, transparent 0%, rgba(248, 240, 224, 0.3) 5%, rgba(248, 240, 224, 0.3) 95%, transparent 100%);
    box-shadow: inset 0 0 100px rgba(139, 125, 107, 0.05), 0 0 60px rgba(0, 0, 0, 0.08);
    z-index: 1;
}

.sidebar {
    width: 35%;
    height: 100vh;
    position: sticky;
    top: 0;
    padding: 3rem 2.5rem;
    border-right: 1px solid var(--border-wood);
    display: flex;
    flex-direction: column;
}

.content-area {
    width: 65%;
    padding: 3rem;
    min-height: 101vh;
}

.content-area>div {
    opacity: 0;
}